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lastdragon
2026-09-06 12:53:21 -06:00
parent 662efe3c2a
commit ad2088d178
94853 changed files with 43200404 additions and 0 deletions
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linux-7.2.3/drivers/scsi/fnic/Makefile
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# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_FCOE_FNIC) += fnic.o
fnic-y := \
fip.o\
fnic_attrs.o \
fnic_isr.o \
fnic_main.o \
fnic_res.o \
fnic_fcs.o \
fdls_disc.o \
fnic_scsi.o \
fnic_trace.o \
fnic_debugfs.o \
vnic_cq.o \
vnic_dev.o \
vnic_intr.o \
vnic_rq.o \
vnic_wq_copy.o \
vnic_wq.o \
fnic_pci_subsys_devid.o
linux-7.2.3/drivers/scsi/fnic/cq_desc.h
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _CQ_DESC_H_
#define _CQ_DESC_H_
/*
* Completion queue descriptor types
*/
enum cq_desc_types {
CQ_DESC_TYPE_WQ_ENET = 0,
CQ_DESC_TYPE_DESC_COPY = 1,
CQ_DESC_TYPE_WQ_EXCH = 2,
CQ_DESC_TYPE_RQ_ENET = 3,
CQ_DESC_TYPE_RQ_FCP = 4,
};
/* Completion queue descriptor: 16B
*
* All completion queues have this basic layout. The
* type_specfic area is unique for each completion
* queue type.
*/
struct cq_desc {
__le16 completed_index;
__le16 q_number;
u8 type_specfic[11];
u8 type_color;
};
#define CQ_DESC_TYPE_BITS 4
#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1)
#define CQ_DESC_COLOR_MASK 1
#define CQ_DESC_COLOR_SHIFT 7
#define CQ_DESC_Q_NUM_BITS 10
#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
#define CQ_DESC_COMP_NDX_BITS 12
#define CQ_DESC_COMP_NDX_MASK ((1 << CQ_DESC_COMP_NDX_BITS) - 1)
static inline void cq_desc_dec(const struct cq_desc *desc_arg,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
{
const struct cq_desc *desc = desc_arg;
const u8 type_color = desc->type_color;
*color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK;
/*
* Make sure color bit is read from desc *before* other fields
* are read from desc. Hardware guarantees color bit is last
* bit (byte) written. Adding the rmb() prevents the compiler
* and/or CPU from reordering the reads which would potentially
* result in reading stale values.
*/
rmb();
*type = type_color & CQ_DESC_TYPE_MASK;
*q_number = le16_to_cpu(desc->q_number) & CQ_DESC_Q_NUM_MASK;
*completed_index = le16_to_cpu(desc->completed_index) &
CQ_DESC_COMP_NDX_MASK;
}
#endif /* _CQ_DESC_H_ */
linux-7.2.3/drivers/scsi/fnic/cq_enet_desc.h
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _CQ_ENET_DESC_H_
#define _CQ_ENET_DESC_H_
#include "cq_desc.h"
/* Ethernet completion queue descriptor: 16B */
struct cq_enet_wq_desc {
__le16 completed_index;
__le16 q_number;
u8 reserved[11];
u8 type_color;
};
static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
{
cq_desc_dec((struct cq_desc *)desc, type,
color, q_number, completed_index);
}
/* Completion queue descriptor: Ethernet receive queue, 16B */
struct cq_enet_rq_desc {
__le16 completed_index_flags;
__le16 q_number_rss_type_flags;
__le32 rss_hash;
__le16 bytes_written_flags;
__le16 vlan;
__le16 checksum_fcoe;
u8 flags;
u8 type_color;
};
#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12)
#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13)
#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15)
#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4
#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6
#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14)
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15)
#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 4
#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8
#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8
#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0)
#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0)
#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1)
#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1)
#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3)
#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6)
#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7)
static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof,
u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
{
u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
u16 q_number_rss_type_flags =
le16_to_cpu(desc->q_number_rss_type_flags);
u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
cq_desc_dec((struct cq_desc *)desc, type,
color, q_number, completed_index);
*ingress_port = (completed_index_flags &
CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
1 : 0;
*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
1 : 0;
*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
1 : 0;
*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
*csum_not_calc = (q_number_rss_type_flags &
CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
*rss_hash = le32_to_cpu(desc->rss_hash);
*bytes_written = bytes_written_flags &
CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
*packet_error = (bytes_written_flags &
CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
*vlan_stripped = (bytes_written_flags &
CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
*vlan = le16_to_cpu(desc->vlan);
if (*fcoe) {
*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
*fcoe_fc_crc_ok = (desc->flags &
CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
*fcoe_enc_error = (desc->flags &
CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
*fcoe_eof = (u8)((desc->checksum_fcoe >>
CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
*checksum = 0;
} else {
*fcoe_sof = 0;
*fcoe_fc_crc_ok = 0;
*fcoe_enc_error = 0;
*fcoe_eof = 0;
*checksum = le16_to_cpu(desc->checksum_fcoe);
}
*tcp_udp_csum_ok =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
*ipv4_csum_ok =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
*ipv4_fragment =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
}
#endif /* _CQ_ENET_DESC_H_ */
linux-7.2.3/drivers/scsi/fnic/cq_exch_desc.h
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _CQ_EXCH_DESC_H_
#define _CQ_EXCH_DESC_H_
#include "cq_desc.h"
/* Exchange completion queue descriptor: 16B */
struct cq_exch_wq_desc {
u16 completed_index;
u16 q_number;
u16 exchange_id;
u8 tmpl;
u8 reserved0;
u32 reserved1;
u8 exch_status;
u8 reserved2[2];
u8 type_color;
};
#define CQ_EXCH_WQ_STATUS_BITS 2
#define CQ_EXCH_WQ_STATUS_MASK ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1)
enum cq_exch_status_types {
CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0,
CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1,
CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2,
CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3,
};
static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr,
u8 *type,
u8 *color,
u16 *q_number,
u16 *completed_index,
u8 *exch_status)
{
cq_desc_dec((struct cq_desc *)desc_ptr, type,
color, q_number, completed_index);
*exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK;
}
struct cq_fcp_rq_desc {
u16 completed_index_eop_sop_prt;
u16 q_number;
u16 exchange_id;
u16 tmpl;
u16 bytes_written;
u16 vlan;
u8 sof;
u8 eof;
u8 fcs_fer_fck;
u8 type_color;
};
#define CQ_FCP_RQ_DESC_FLAGS_SOP (1 << 15)
#define CQ_FCP_RQ_DESC_FLAGS_EOP (1 << 14)
#define CQ_FCP_RQ_DESC_FLAGS_PRT (1 << 12)
#define CQ_FCP_RQ_DESC_TMPL_MASK 0x1f
#define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK 0x3fff
#define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT 14
#define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT)
#define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT 15
#define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT)
#define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK 0x1
#define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT 1
#define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT)
#define CQ_FCP_RQ_DESC_FCS_OK_SHIFT 7
#define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT)
static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr,
u8 *type,
u8 *color,
u16 *q_number,
u16 *completed_index,
u8 *eop,
u8 *sop,
u8 *fck,
u16 *exchange_id,
u16 *tmpl,
u32 *bytes_written,
u8 *sof,
u8 *eof,
u8 *ingress_port,
u8 *packet_err,
u8 *fcoe_err,
u8 *fcs_ok,
u8 *vlan_stripped,
u16 *vlan)
{
cq_desc_dec((struct cq_desc *)desc_ptr, type,
color, q_number, completed_index);
*eop = (desc_ptr->completed_index_eop_sop_prt &
CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0;
*sop = (desc_ptr->completed_index_eop_sop_prt &
CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0;
*ingress_port =
(desc_ptr->completed_index_eop_sop_prt &
CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0;
*exchange_id = desc_ptr->exchange_id;
*tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK;
*bytes_written =
desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK;
*packet_err =
(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >>
CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT;
*vlan_stripped =
(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >>
CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT;
*vlan = desc_ptr->vlan;
*sof = desc_ptr->sof;
*fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK;
*fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >>
CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT;
*eof = desc_ptr->eof;
*fcs_ok =
(desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >>
CQ_FCP_RQ_DESC_FCS_OK_SHIFT;
}
struct cq_sgl_desc {
u16 exchange_id;
u16 q_number;
u32 active_burst_offset;
u32 tot_data_bytes;
u16 tmpl;
u8 sgl_err;
u8 type_color;
};
enum cq_sgl_err_types {
CQ_SGL_ERR_NO_ERROR = 0,
CQ_SGL_ERR_OVERFLOW, /* data ran beyond end of SGL */
CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/
CQ_SGL_ERR_ADDR_RSP_ERR, /* sgl address error */
CQ_SGL_ERR_DATA_RSP_ERR, /* sgl data rsp error */
CQ_SGL_ERR_CNT_ZERO_ERR, /* SGL count is 0 */
CQ_SGL_ERR_CNT_MAX_ERR, /* SGL count is larger than supported */
CQ_SGL_ERR_ORDER_ERR, /* frames recv on both ports, order err */
CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */
CQ_SGL_ERR_HOST_CQ_ERR, /* host cq entry to local vnic addr ill */
};
#define CQ_SGL_SGL_ERR_MASK 0x1f
#define CQ_SGL_TMPL_MASK 0x1f
static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr,
u8 *type,
u8 *color,
u16 *q_number,
u16 *exchange_id,
u32 *active_burst_offset,
u32 *tot_data_bytes,
u16 *tmpl,
u8 *sgl_err)
{
/* Cheat a little by assuming exchange_id is the same as completed
index */
cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number,
exchange_id);
*active_burst_offset = desc_ptr->active_burst_offset;
*tot_data_bytes = desc_ptr->tot_data_bytes;
*tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK;
*sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK;
}
#endif /* _CQ_EXCH_DESC_H_ */
linux-7.2.3/drivers/scsi/fnic/fcpio.h
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _FCPIO_H_
#define _FCPIO_H_
#include <linux/if_ether.h>
/*
* This header file includes all of the data structures used for
* communication by the host driver to the fcp firmware.
*/
/*
* Exchange and sequence id space allocated to the host driver
*/
#define FCPIO_HOST_EXCH_RANGE_START 0x1000
#define FCPIO_HOST_EXCH_RANGE_END 0x1fff
#define FCPIO_HOST_SEQ_ID_RANGE_START 0x80
#define FCPIO_HOST_SEQ_ID_RANGE_END 0xff
/*
* Command entry type
*/
enum fcpio_type {
/*
* Initiator request types
*/
FCPIO_ICMND_16 = 0x1,
FCPIO_ICMND_32,
FCPIO_ICMND_CMPL,
FCPIO_ITMF,
FCPIO_ITMF_CMPL,
/*
* Target request types
*/
FCPIO_TCMND_16 = 0x11,
FCPIO_TCMND_32,
FCPIO_TDATA,
FCPIO_TXRDY,
FCPIO_TRSP,
FCPIO_TDRSP_CMPL,
FCPIO_TTMF,
FCPIO_TTMF_ACK,
FCPIO_TABORT,
FCPIO_TABORT_CMPL,
/*
* Misc request types
*/
FCPIO_ACK = 0x20,
FCPIO_RESET,
FCPIO_RESET_CMPL,
FCPIO_FLOGI_REG,
FCPIO_FLOGI_REG_CMPL,
FCPIO_ECHO,
FCPIO_ECHO_CMPL,
FCPIO_LUNMAP_CHNG,
FCPIO_LUNMAP_REQ,
FCPIO_LUNMAP_REQ_CMPL,
FCPIO_FLOGI_FIP_REG,
FCPIO_FLOGI_FIP_REG_CMPL,
};
/*
* Header status codes from the firmware
*/
enum fcpio_status {
FCPIO_SUCCESS = 0, /* request was successful */
/*
* If a request to the firmware is rejected, the original request
* header will be returned with the status set to one of the following:
*/
FCPIO_INVALID_HEADER, /* header contains invalid data */
FCPIO_OUT_OF_RESOURCE, /* out of resources to complete request */
FCPIO_INVALID_PARAM, /* some parameter in request is invalid */
FCPIO_REQ_NOT_SUPPORTED, /* request type is not supported */
FCPIO_IO_NOT_FOUND, /* requested I/O was not found */
/*
* Once a request is processed, the firmware will usually return
* a cmpl message type. In cases where errors occurred,
* the header status field would be filled in with one of the following:
*/
FCPIO_ABORTED = 0x41, /* request was aborted */
FCPIO_TIMEOUT, /* request was timed out */
FCPIO_SGL_INVALID, /* request was aborted due to sgl error */
FCPIO_MSS_INVALID, /* request was aborted due to mss error */
FCPIO_DATA_CNT_MISMATCH, /* recv/sent more/less data than exp. */
FCPIO_FW_ERR, /* request was terminated due to fw error */
FCPIO_ITMF_REJECTED, /* itmf req was rejected by remote node */
FCPIO_ITMF_FAILED, /* itmf req was failed by remote node */
FCPIO_ITMF_INCORRECT_LUN, /* itmf req targeted incorrect LUN */
FCPIO_CMND_REJECTED, /* request was invalid and rejected */
FCPIO_NO_PATH_AVAIL, /* no paths to the lun was available */
FCPIO_PATH_FAILED, /* i/o sent to current path failed */
FCPIO_LUNMAP_CHNG_PEND, /* i/o rejected due to lunmap change */
};
/*
* The header command tag. All host requests will use the "tag" field
* to mark commands with a unique tag. When the firmware responds to
* a host request, it will copy the tag field into the response.
*
* The only firmware requests that will use the rx_id/ox_id fields instead
* of the tag field will be the target command and target task management
* requests. These two requests do not have corresponding host requests
* since they come directly from the FC initiator on the network.
*/
struct fcpio_tag {
union {
u32 req_id;
struct {
u16 rx_id;
u16 ox_id;
} ex_id;
} u;
};
static inline void
fcpio_tag_id_enc(struct fcpio_tag *tag, u32 id)
{
tag->u.req_id = id;
}
static inline void
fcpio_tag_id_dec(struct fcpio_tag *tag, u32 *id)
{
*id = tag->u.req_id;
}
static inline void
fcpio_tag_exid_enc(struct fcpio_tag *tag, u16 ox_id, u16 rx_id)
{
tag->u.ex_id.rx_id = rx_id;
tag->u.ex_id.ox_id = ox_id;
}
static inline void
fcpio_tag_exid_dec(struct fcpio_tag *tag, u16 *ox_id, u16 *rx_id)
{
*rx_id = tag->u.ex_id.rx_id;
*ox_id = tag->u.ex_id.ox_id;
}
/*
* The header for an fcpio request, whether from the firmware or from the
* host driver
*/
struct fcpio_header {
u8 type; /* enum fcpio_type */
u8 status; /* header status entry */
u16 _resvd; /* reserved */
struct fcpio_tag tag; /* header tag */
};
static inline void
fcpio_header_enc(struct fcpio_header *hdr,
u8 type, u8 status,
struct fcpio_tag tag)
{
hdr->type = type;
hdr->status = status;
hdr->_resvd = 0;
hdr->tag = tag;
}
static inline void
fcpio_header_dec(struct fcpio_header *hdr,
u8 *type, u8 *status,
struct fcpio_tag *tag)
{
*type = hdr->type;
*status = hdr->status;
*tag = hdr->tag;
}
#define CDB_16 16
#define CDB_32 32
#define LUN_ADDRESS 8
/*
* fcpio_icmnd_16: host -> firmware request
*
* used for sending out an initiator SCSI 16-byte command
*/
struct fcpio_icmnd_16 {
u32 lunmap_id; /* index into lunmap table */
u8 special_req_flags; /* special exchange request flags */
u8 _resvd0[3]; /* reserved */
u32 sgl_cnt; /* scatter-gather list count */
u32 sense_len; /* sense buffer length */
u64 sgl_addr; /* scatter-gather list addr */
u64 sense_addr; /* sense buffer address */
u8 crn; /* SCSI Command Reference No. */
u8 pri_ta; /* SCSI Priority and Task attribute */
u8 _resvd1; /* reserved: should be 0 */
u8 flags; /* command flags */
u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */
u32 data_len; /* length of data expected */
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
u8 _resvd2; /* reserved */
u8 d_id[3]; /* FC vNIC only: Target D_ID */
u16 mss; /* FC vNIC only: max burst */
u16 _resvd3; /* reserved */
u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */
u32 e_d_tov; /* FC vNIC only: Err Detect Timeout */
};
/*
* Special request flags
*/
#define FCPIO_ICMND_SRFLAG_RETRY 0x01 /* Enable Retry handling on exchange */
/*
* Priority/Task Attribute settings
*/
#define FCPIO_ICMND_PTA_SIMPLE 0 /* simple task attribute */
#define FCPIO_ICMND_PTA_HEADQ 1 /* head of queue task attribute */
#define FCPIO_ICMND_PTA_ORDERED 2 /* ordered task attribute */
#define FCPIO_ICMND_PTA_ACA 4 /* auto contingent allegiance */
#define FCPIO_ICMND_PRI_SHIFT 3 /* priority field starts in bit 3 */
/*
* Command flags
*/
#define FCPIO_ICMND_RDDATA 0x02 /* read data */
#define FCPIO_ICMND_WRDATA 0x01 /* write data */
/*
* fcpio_icmnd_32: host -> firmware request
*
* used for sending out an initiator SCSI 32-byte command
*/
struct fcpio_icmnd_32 {
u32 lunmap_id; /* index into lunmap table */
u8 special_req_flags; /* special exchange request flags */
u8 _resvd0[3]; /* reserved */
u32 sgl_cnt; /* scatter-gather list count */
u32 sense_len; /* sense buffer length */
u64 sgl_addr; /* scatter-gather list addr */
u64 sense_addr; /* sense buffer address */
u8 crn; /* SCSI Command Reference No. */
u8 pri_ta; /* SCSI Priority and Task attribute */
u8 _resvd1; /* reserved: should be 0 */
u8 flags; /* command flags */
u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */
u32 data_len; /* length of data expected */
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
u8 _resvd2; /* reserved */
u8 d_id[3]; /* FC vNIC only: Target D_ID */
u16 mss; /* FC vNIC only: max burst */
u16 _resvd3; /* reserved */
u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */
u32 e_d_tov; /* FC vNIC only: Error Detect Timeout */
};
/*
* fcpio_itmf: host -> firmware request
*
* used for requesting the firmware to abort a request and/or send out
* a task management function
*
* The t_tag field is only needed when the request type is ABT_TASK.
*/
struct fcpio_itmf {
u32 lunmap_id; /* index into lunmap table */
u32 tm_req; /* SCSI Task Management request */
u32 t_tag; /* header tag of fcpio to be aborted */
u32 _resvd; /* _reserved */
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
u8 _resvd1; /* reserved */
u8 d_id[3]; /* FC vNIC only: Target D_ID */
u32 r_a_tov; /* FC vNIC only: R_A_TOV in msec */
u32 e_d_tov; /* FC vNIC only: E_D_TOV in msec */
};
/*
* Task Management request
*/
enum fcpio_itmf_tm_req_type {
FCPIO_ITMF_ABT_TASK_TERM = 0x01, /* abort task and terminate */
FCPIO_ITMF_ABT_TASK, /* abort task and issue abts */
FCPIO_ITMF_ABT_TASK_SET, /* abort task set */
FCPIO_ITMF_CLR_TASK_SET, /* clear task set */
FCPIO_ITMF_LUN_RESET, /* logical unit reset task mgmt */
FCPIO_ITMF_CLR_ACA, /* Clear ACA condition */
};
/*
* fcpio_tdata: host -> firmware request
*
* used for requesting the firmware to send out a read data transfer for a
* target command
*/
struct fcpio_tdata {
u16 rx_id; /* FC rx_id of target command */
u16 flags; /* command flags */
u32 rel_offset; /* data sequence relative offset */
u32 sgl_cnt; /* scatter-gather list count */
u32 data_len; /* length of data expected to send */
u64 sgl_addr; /* scatter-gather list address */
};
/*
* Command flags
*/
#define FCPIO_TDATA_SCSI_RSP 0x01 /* send a scsi resp. after last frame */
/*
* fcpio_txrdy: host -> firmware request
*
* used for requesting the firmware to send out a write data transfer for a
* target command
*/
struct fcpio_txrdy {
u16 rx_id; /* FC rx_id of target command */
u16 _resvd0; /* reserved */
u32 rel_offset; /* data sequence relative offset */
u32 sgl_cnt; /* scatter-gather list count */
u32 data_len; /* length of data expected to send */
u64 sgl_addr; /* scatter-gather list address */
};
/*
* fcpio_trsp: host -> firmware request
*
* used for requesting the firmware to send out a response for a target
* command
*/
struct fcpio_trsp {
u16 rx_id; /* FC rx_id of target command */
u16 _resvd0; /* reserved */
u32 sense_len; /* sense data buffer length */
u64 sense_addr; /* sense data buffer address */
u16 _resvd1; /* reserved */
u8 flags; /* response request flags */
u8 scsi_status; /* SCSI status */
u32 residual; /* SCSI data residual value of I/O */
};
/*
* resposnse request flags
*/
#define FCPIO_TRSP_RESID_UNDER 0x08 /* residual is valid and is underflow */
#define FCPIO_TRSP_RESID_OVER 0x04 /* residual is valid and is overflow */
/*
* fcpio_ttmf_ack: host -> firmware response
*
* used by the host to indicate to the firmware it has received and processed
* the target tmf request
*/
struct fcpio_ttmf_ack {
u16 rx_id; /* FC rx_id of target command */
u16 _resvd0; /* reserved */
u32 tmf_status; /* SCSI task management status */
};
/*
* fcpio_tabort: host -> firmware request
*
* used by the host to request the firmware to abort a target request that was
* received by the firmware
*/
struct fcpio_tabort {
u16 rx_id; /* rx_id of the target request */
};
/*
* fcpio_reset: host -> firmware request
*
* used by the host to signal a reset of the driver to the firmware
* and to request firmware to clean up all outstanding I/O
*/
struct fcpio_reset {
u32 _resvd;
};
enum fcpio_flogi_reg_format_type {
FCPIO_FLOGI_REG_DEF_DEST = 0, /* Use the oui | s_id mac format */
FCPIO_FLOGI_REG_GW_DEST, /* Use the fixed gateway mac */
};
/*
* fcpio_flogi_reg: host -> firmware request
*
* fc vnic only
* used by the host to notify the firmware of the lif's s_id
* and destination mac address format
*/
struct fcpio_flogi_reg {
u8 format;
u8 s_id[3]; /* FC vNIC only: Source S_ID */
u8 gateway_mac[ETH_ALEN]; /* Destination gateway mac */
u16 _resvd;
u32 r_a_tov; /* R_A_TOV in msec */
u32 e_d_tov; /* E_D_TOV in msec */
};
/*
* fcpio_echo: host -> firmware request
*
* sends a heartbeat echo request to the firmware
*/
struct fcpio_echo {
u32 _resvd;
};
/*
* fcpio_lunmap_req: host -> firmware request
*
* scsi vnic only
* sends a request to retrieve the lunmap table for scsi vnics
*/
struct fcpio_lunmap_req {
u64 addr; /* address of the buffer */
u32 len; /* len of the buffer */
};
/*
* fcpio_flogi_fip_reg: host -> firmware request
*
* fc vnic only
* used by the host to notify the firmware of the lif's s_id
* and destination mac address format
*/
struct fcpio_flogi_fip_reg {
u8 _resvd0;
u8 s_id[3]; /* FC vNIC only: Source S_ID */
u8 fcf_mac[ETH_ALEN]; /* FCF Target destination mac */
u16 _resvd1;
u32 r_a_tov; /* R_A_TOV in msec */
u32 e_d_tov; /* E_D_TOV in msec */
u8 ha_mac[ETH_ALEN]; /* Host adapter source mac */
u16 _resvd2;
};
/*
* Basic structure for all fcpio structures that are sent from the host to the
* firmware. They are 128 bytes per structure.
*/
#define FCPIO_HOST_REQ_LEN 128 /* expected length of host requests */
struct fcpio_host_req {
struct fcpio_header hdr;
union {
/*
* Defines space needed for request
*/
u8 buf[FCPIO_HOST_REQ_LEN - sizeof(struct fcpio_header)];
/*
* Initiator host requests
*/
struct fcpio_icmnd_16 icmnd_16;
struct fcpio_icmnd_32 icmnd_32;
struct fcpio_itmf itmf;
/*
* Target host requests
*/
struct fcpio_tdata tdata;
struct fcpio_txrdy txrdy;
struct fcpio_trsp trsp;
struct fcpio_ttmf_ack ttmf_ack;
struct fcpio_tabort tabort;
/*
* Misc requests
*/
struct fcpio_reset reset;
struct fcpio_flogi_reg flogi_reg;
struct fcpio_echo echo;
struct fcpio_lunmap_req lunmap_req;
struct fcpio_flogi_fip_reg flogi_fip_reg;
} u;
};
/*
* fcpio_icmnd_cmpl: firmware -> host response
*
* used for sending the host a response to an initiator command
*/
struct fcpio_icmnd_cmpl {
u8 _resvd0[6]; /* reserved */
u8 flags; /* response flags */
u8 scsi_status; /* SCSI status */
u32 residual; /* SCSI data residual length */
u32 sense_len; /* SCSI sense length */
};
/*
* response flags
*/
#define FCPIO_ICMND_CMPL_RESID_UNDER 0x08 /* resid under and valid */
#define FCPIO_ICMND_CMPL_RESID_OVER 0x04 /* resid over and valid */
/*
* fcpio_itmf_cmpl: firmware -> host response
*
* used for sending the host a response for a itmf request
*/
struct fcpio_itmf_cmpl {
u32 _resvd; /* reserved */
};
/*
* fcpio_tcmnd_16: firmware -> host request
*
* used by the firmware to notify the host of an incoming target SCSI 16-Byte
* request
*/
struct fcpio_tcmnd_16 {
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
u8 crn; /* SCSI Command Reference No. */
u8 pri_ta; /* SCSI Priority and Task attribute */
u8 _resvd2; /* reserved: should be 0 */
u8 flags; /* command flags */
u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */
u32 data_len; /* length of data expected */
u8 _resvd1; /* reserved */
u8 s_id[3]; /* FC vNIC only: Source S_ID */
};
/*
* Priority/Task Attribute settings
*/
#define FCPIO_TCMND_PTA_SIMPLE 0 /* simple task attribute */
#define FCPIO_TCMND_PTA_HEADQ 1 /* head of queue task attribute */
#define FCPIO_TCMND_PTA_ORDERED 2 /* ordered task attribute */
#define FCPIO_TCMND_PTA_ACA 4 /* auto contingent allegiance */
#define FCPIO_TCMND_PRI_SHIFT 3 /* priority field starts in bit 3 */
/*
* Command flags
*/
#define FCPIO_TCMND_RDDATA 0x02 /* read data */
#define FCPIO_TCMND_WRDATA 0x01 /* write data */
/*
* fcpio_tcmnd_32: firmware -> host request
*
* used by the firmware to notify the host of an incoming target SCSI 32-Byte
* request
*/
struct fcpio_tcmnd_32 {
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
u8 crn; /* SCSI Command Reference No. */
u8 pri_ta; /* SCSI Priority and Task attribute */
u8 _resvd2; /* reserved: should be 0 */
u8 flags; /* command flags */
u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */
u32 data_len; /* length of data expected */
u8 _resvd0; /* reserved */
u8 s_id[3]; /* FC vNIC only: Source S_ID */
};
/*
* fcpio_tdrsp_cmpl: firmware -> host response
*
* used by the firmware to notify the host of a response to a host target
* command
*/
struct fcpio_tdrsp_cmpl {
u16 rx_id; /* rx_id of the target request */
u16 _resvd0; /* reserved */
};
/*
* fcpio_ttmf: firmware -> host request
*
* used by the firmware to notify the host of an incoming task management
* function request
*/
struct fcpio_ttmf {
u8 _resvd0; /* reserved */
u8 s_id[3]; /* FC vNIC only: Source S_ID */
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
u8 crn; /* SCSI Command Reference No. */
u8 _resvd2[3]; /* reserved */
u32 tmf_type; /* task management request type */
};
/*
* Task Management request
*/
#define FCPIO_TTMF_CLR_ACA 0x40 /* Clear ACA condition */
#define FCPIO_TTMF_LUN_RESET 0x10 /* logical unit reset task mgmt */
#define FCPIO_TTMF_CLR_TASK_SET 0x04 /* clear task set */
#define FCPIO_TTMF_ABT_TASK_SET 0x02 /* abort task set */
#define FCPIO_TTMF_ABT_TASK 0x01 /* abort task */
/*
* fcpio_tabort_cmpl: firmware -> host response
*
* used by the firmware to respond to a host's tabort request
*/
struct fcpio_tabort_cmpl {
u16 rx_id; /* rx_id of the target request */
u16 _resvd0; /* reserved */
};
/*
* fcpio_ack: firmware -> host response
*
* used by firmware to notify the host of the last work request received
*/
struct fcpio_ack {
u16 request_out; /* last host entry received */
u16 _resvd;
};
/*
* fcpio_reset_cmpl: firmware -> host response
*
* use by firmware to respond to the host's reset request
*/
struct fcpio_reset_cmpl {
u16 vnic_id;
};
/*
* fcpio_flogi_reg_cmpl: firmware -> host response
*
* fc vnic only
* response to the fcpio_flogi_reg request
*/
struct fcpio_flogi_reg_cmpl {
u32 _resvd;
};
/*
* fcpio_echo_cmpl: firmware -> host response
*
* response to the fcpio_echo request
*/
struct fcpio_echo_cmpl {
u32 _resvd;
};
/*
* fcpio_lunmap_chng: firmware -> host notification
*
* scsi vnic only
* notifies the host that the lunmap tables have changed
*/
struct fcpio_lunmap_chng {
u32 _resvd;
};
/*
* fcpio_lunmap_req_cmpl: firmware -> host response
*
* scsi vnic only
* response for lunmap table request from the host
*/
struct fcpio_lunmap_req_cmpl {
u32 _resvd;
};
/*
* Basic structure for all fcpio structures that are sent from the firmware to
* the host. They are 64 bytes per structure.
*/
#define FCPIO_FW_REQ_LEN 64 /* expected length of fw requests */
struct fcpio_fw_req {
struct fcpio_header hdr;
union {
/*
* Defines space needed for request
*/
u8 buf[FCPIO_FW_REQ_LEN - sizeof(struct fcpio_header)];
/*
* Initiator firmware responses
*/
struct fcpio_icmnd_cmpl icmnd_cmpl;
struct fcpio_itmf_cmpl itmf_cmpl;
/*
* Target firmware new requests
*/
struct fcpio_tcmnd_16 tcmnd_16;
struct fcpio_tcmnd_32 tcmnd_32;
/*
* Target firmware responses
*/
struct fcpio_tdrsp_cmpl tdrsp_cmpl;
struct fcpio_ttmf ttmf;
struct fcpio_tabort_cmpl tabort_cmpl;
/*
* Firmware response to work received
*/
struct fcpio_ack ack;
/*
* Misc requests
*/
struct fcpio_reset_cmpl reset_cmpl;
struct fcpio_flogi_reg_cmpl flogi_reg_cmpl;
struct fcpio_echo_cmpl echo_cmpl;
struct fcpio_lunmap_chng lunmap_chng;
struct fcpio_lunmap_req_cmpl lunmap_req_cmpl;
} u;
};
/*
* Access routines to encode and decode the color bit, which is the most
* significant bit of the MSB of the structure
*/
static inline void fcpio_color_enc(struct fcpio_fw_req *fw_req, u8 color)
{
u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1;
if (color)
*c |= 0x80;
else
*c &= ~0x80;
}
static inline void fcpio_color_dec(struct fcpio_fw_req *fw_req, u8 *color)
{
u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1;
*color = *c >> 7;
/*
* Make sure color bit is read from desc *before* other fields
* are read from desc. Hardware guarantees color bit is last
* bit (byte) written. Adding the rmb() prevents the compiler
* and/or CPU from reordering the reads which would potentially
* result in reading stale values.
*/
rmb();
}
/*
* Lunmap table entry for scsi vnics
*/
#define FCPIO_LUNMAP_TABLE_SIZE 256
#define FCPIO_FLAGS_LUNMAP_VALID 0x80
#define FCPIO_FLAGS_BOOT 0x01
struct fcpio_lunmap_entry {
u8 bus;
u8 target;
u8 lun;
u8 path_cnt;
u16 flags;
u16 update_cnt;
};
struct fcpio_lunmap_tbl {
u32 update_cnt;
struct fcpio_lunmap_entry lunmaps[FCPIO_LUNMAP_TABLE_SIZE];
};
#endif /* _FCPIO_H_ */
linux-7.2.3/drivers/scsi/fnic/fdls_disc.c
+5093
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linux-7.2.3/drivers/scsi/fnic/fdls_fc.h
+253
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@@ -0,0 +1,253 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _FDLS_FC_H_
#define _FDLS_FC_H_
/* This file contains the declarations for FC fabric services
* and target discovery
*
* Request and Response for
* 1. FLOGI
* 2. PLOGI to Fabric Controller
* 3. GPN_ID, GPN_FT
* 4. RSCN
* 5. PLOGI to Target
* 6. PRLI to Target
*/
#include <scsi/scsi.h>
#include <scsi/fc/fc_els.h>
#include <uapi/scsi/fc/fc_fs.h>
#include <uapi/scsi/fc/fc_ns.h>
#include <uapi/scsi/fc/fc_gs.h>
#include <uapi/linux/if_ether.h>
#include <scsi/fc/fc_ms.h>
#include <linux/minmax.h>
#include <linux/if_ether.h>
#include <scsi/fc/fc_encaps.h>
#include <scsi/fc/fc_fcoe.h>
#define FDLS_MIN_FRAMES (32)
#define FDLS_MIN_FRAME_ELEM (4)
#define FNIC_FCP_SP_RD_XRDY_DIS 0x00000002
#define FNIC_FCP_SP_TARGET 0x00000010
#define FNIC_FCP_SP_INITIATOR 0x00000020
#define FNIC_FCP_SP_CONF_CMPL 0x00000080
#define FNIC_FCP_SP_RETRY 0x00000100
#define FNIC_FC_CONCUR_SEQS (0xFF)
#define FNIC_FC_RO_INFO (0x1F)
/* Little Endian */
#define FNIC_UNASSIGNED_OXID (0xffff)
#define FNIC_UNASSIGNED_RXID (0xffff)
#define FNIC_ELS_REQ_FCTL (0x000029)
#define FNIC_ELS_REP_FCTL (0x000099)
#define FNIC_FCP_RSP_FCTL (0x000099)
#define FNIC_REQ_ABTS_FCTL (0x000009)
#define FNIC_FC_PH_VER_HI (0x20)
#define FNIC_FC_PH_VER_LO (0x20)
#define FNIC_FC_PH_VER (0x2020)
#define FNIC_FC_B2B_CREDIT (0x0A)
#define FNIC_FC_B2B_RDF_SZ (0x0800)
#define FNIC_LOGI_RDF_SIZE(_logi) ((_logi).fl_csp.sp_bb_data)
#define FNIC_LOGI_R_A_TOV(_logi) ((_logi).fl_csp.sp_r_a_tov)
#define FNIC_LOGI_E_D_TOV(_logi) ((_logi).fl_csp.sp_e_d_tov)
#define FNIC_LOGI_FEATURES(_logi) (be16_to_cpu((_logi).fl_csp.sp_features))
#define FNIC_LOGI_PORT_NAME(_logi) ((_logi).fl_wwpn)
#define FNIC_LOGI_NODE_NAME(_logi) ((_logi).fl_wwnn)
#define FNIC_LOGI_SET_RDF_SIZE(_logi, _rdf_size) \
(FNIC_LOGI_RDF_SIZE(_logi) = cpu_to_be16(_rdf_size))
#define FNIC_LOGI_SET_E_D_TOV(_logi, _e_d_tov) \
(FNIC_LOGI_E_D_TOV(_logi) = cpu_to_be32(_e_d_tov))
#define FNIC_LOGI_SET_R_A_TOV(_logi, _r_a_tov) \
(FNIC_LOGI_R_A_TOV(_logi) = cpu_to_be32(_r_a_tov))
#define FNIC_STD_SET_S_ID(_fchdr, _sid) memcpy((_fchdr).fh_s_id, _sid, 3)
#define FNIC_STD_SET_D_ID(_fchdr, _did) memcpy((_fchdr).fh_d_id, _did, 3)
#define FNIC_STD_SET_OX_ID(_fchdr, _oxid) ((_fchdr).fh_ox_id = cpu_to_be16(_oxid))
#define FNIC_STD_SET_RX_ID(_fchdr, _rxid) ((_fchdr).fh_rx_id = cpu_to_be16(_rxid))
#define FNIC_STD_SET_R_CTL(_fchdr, _rctl) ((_fchdr).fh_r_ctl = _rctl)
#define FNIC_STD_SET_TYPE(_fchdr, _type) ((_fchdr).fh_type = _type)
#define FNIC_STD_SET_F_CTL(_fchdr, _fctl) \
put_unaligned_be24(_fctl, &((_fchdr).fh_f_ctl))
#define FNIC_STD_SET_NPORT_NAME(_ptr, _wwpn) put_unaligned_be64(_wwpn, _ptr)
#define FNIC_STD_SET_NODE_NAME(_ptr, _wwnn) put_unaligned_be64(_wwnn, _ptr)
#define FNIC_STD_SET_PORT_ID(__req, __portid) \
memcpy(__req.fr_fid.fp_fid, __portid, 3)
#define FNIC_STD_SET_PORT_NAME(_req, _pName) \
(put_unaligned_be64(_pName, &_req.fr_wwn))
#define FNIC_STD_GET_OX_ID(_fchdr) (be16_to_cpu((_fchdr)->fh_ox_id))
#define FNIC_STD_GET_RX_ID(_fchdr) (be16_to_cpu((_fchdr)->fh_rx_id))
#define FNIC_STD_GET_S_ID(_fchdr) ((_fchdr)->fh_s_id)
#define FNIC_STD_GET_D_ID(_fchdr) ((_fchdr)->fh_d_id)
#define FNIC_STD_GET_TYPE(_fchdr) ((_fchdr)->fh_type)
#define FNIC_STD_GET_F_CTL(_fchdr) ((_fchdr)->fh_f_ctl)
#define FNIC_STD_GET_R_CTL(_fchdr) ((_fchdr)->fh_r_ctl)
#define FNIC_STD_GET_FC_CT_CMD(__fcct_hdr) (be16_to_cpu(__fcct_hdr->ct_cmd))
#define FNIC_FCOE_MAX_FRAME_SZ (2048)
#define FNIC_FCOE_MIN_FRAME_SZ (280)
#define FNIC_FC_MAX_PAYLOAD_LEN (2048)
#define FNIC_MIN_DATA_FIELD_SIZE (256)
#define FNIC_FC_EDTOV_NSEC (0x400)
#define FNIC_NSEC_TO_MSEC (0x1000000)
#define FCP_PRLI_FUNC_TARGET (0x0010)
#define FNIC_FC_R_CTL_SOLICITED_DATA (0x21)
#define FNIC_FC_F_CTL_LAST_END_SEQ (0x98)
#define FNIC_FC_F_CTL_LAST_END_SEQ_INT (0x99)
#define FNIC_FC_F_CTL_FIRST_LAST_SEQINIT (0x29)
#define FNIC_FC_R_CTL_FC4_SCTL (0x03)
#define FNIC_FC_CS_CTL (0x00)
#define FNIC_FC_FRAME_UNSOLICITED(_fchdr) \
(_fchdr->fh_r_ctl == FC_RCTL_ELS_REQ)
#define FNIC_FC_FRAME_SOLICITED_DATA(_fchdr) \
(_fchdr->fh_r_ctl == FNIC_FC_R_CTL_SOLICITED_DATA)
#define FNIC_FC_FRAME_SOLICITED_CTRL_REPLY(_fchdr) \
(_fchdr->fh_r_ctl == FC_RCTL_ELS_REP)
#define FNIC_FC_FRAME_FCTL_LAST_END_SEQ(_fchdr) \
(_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_LAST_END_SEQ)
#define FNIC_FC_FRAME_FCTL_LAST_END_SEQ_INT(_fchdr) \
(_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_LAST_END_SEQ_INT)
#define FNIC_FC_FRAME_FCTL_FIRST_LAST_SEQINIT(_fchdr) \
(_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_FIRST_LAST_SEQINIT)
#define FNIC_FC_FRAME_FC4_SCTL(_fchdr) \
(_fchdr->fh_r_ctl == FNIC_FC_R_CTL_FC4_SCTL)
#define FNIC_FC_FRAME_TYPE_BLS(_fchdr) (_fchdr->fh_type == FC_TYPE_BLS)
#define FNIC_FC_FRAME_TYPE_ELS(_fchdr) (_fchdr->fh_type == FC_TYPE_ELS)
#define FNIC_FC_FRAME_TYPE_FC_GS(_fchdr) (_fchdr->fh_type == FC_TYPE_CT)
#define FNIC_FC_FRAME_CS_CTL(_fchdr) (_fchdr->fh_cs_ctl == FNIC_FC_CS_CTL)
#define FNIC_FC_C3_RDF (0xfff)
#define FNIC_FC_PLOGI_RSP_RDF(_plogi_rsp) \
(min(_plogi_rsp->u.csp_plogi.b2b_rdf_size, \
(_plogi_rsp->spc3[4] & FNIC_FC_C3_RDF)))
#define FNIC_FC_PLOGI_RSP_CONCUR_SEQ(_plogi_rsp) \
(min((uint16_t) (be16_to_cpu(_plogi_rsp->els.fl_csp.sp_tot_seq)), \
(uint16_t) (be16_to_cpu(_plogi_rsp->els.fl_cssp[2].cp_con_seq) & 0xff)))
/* FLOGI/PLOGI struct */
struct fc_std_flogi {
struct fc_frame_header fchdr;
struct fc_els_flogi els;
} __packed;
struct fc_std_els_acc_rsp {
struct fc_frame_header fchdr;
struct fc_els_ls_acc acc;
} __packed;
struct fc_std_els_rjt_rsp {
struct fc_frame_header fchdr;
struct fc_els_ls_rjt rej;
} __packed;
struct fc_std_els_adisc {
struct fc_frame_header fchdr;
struct fc_els_adisc els;
} __packed;
struct fc_std_rls_acc {
struct fc_frame_header fchdr;
struct fc_els_rls_resp els;
} __packed;
struct fc_std_abts_ba_acc {
struct fc_frame_header fchdr;
struct fc_ba_acc acc;
} __packed;
struct fc_std_abts_ba_rjt {
struct fc_frame_header fchdr;
struct fc_ba_rjt rjt;
} __packed;
struct fc_std_els_prli {
struct fc_frame_header fchdr;
struct fc_els_prli els_prli;
struct fc_els_spp sp;
} __packed;
struct fc_std_rpn_id {
struct fc_frame_header fchdr;
struct fc_ct_hdr fc_std_ct_hdr;
struct fc_ns_rn_id rpn_id;
} __packed;
struct fc_std_fdmi_rhba {
struct fc_frame_header fchdr;
struct fc_ct_hdr fc_std_ct_hdr;
struct fc_fdmi_rhba rhba;
} __packed;
struct fc_std_fdmi_rpa {
struct fc_frame_header fchdr;
struct fc_ct_hdr fc_std_ct_hdr;
struct fc_fdmi_rpa rpa;
} __packed;
struct fc_std_rft_id {
struct fc_frame_header fchdr;
struct fc_ct_hdr fc_std_ct_hdr;
struct fc_ns_rft_id rft_id;
} __packed;
struct fc_std_rff_id {
struct fc_frame_header fchdr;
struct fc_ct_hdr fc_std_ct_hdr;
struct fc_ns_rff_id rff_id;
} __packed;
struct fc_std_gpn_ft {
struct fc_frame_header fchdr;
struct fc_ct_hdr fc_std_ct_hdr;
struct fc_ns_gid_ft gpn_ft;
} __packed;
/* Accept CT_IU for GPN_FT */
struct fc_gpn_ft_rsp_iu {
uint8_t ctrl;
uint8_t fcid[3];
uint32_t rsvd;
__be64 wwpn;
} __packed;
struct fc_std_rls {
struct fc_frame_header fchdr;
struct fc_els_rls els;
} __packed;
struct fc_std_scr {
struct fc_frame_header fchdr;
struct fc_els_scr scr;
} __packed;
struct fc_std_rscn {
struct fc_frame_header fchdr;
struct fc_els_rscn els;
} __packed;
struct fc_std_logo {
struct fc_frame_header fchdr;
struct fc_els_logo els;
} __packed;
#define FNIC_ETH_FCOE_HDRS_OFFSET \
(sizeof(struct ethhdr) + sizeof(struct fcoe_hdr))
#endif /* _FDLS_FC_H */
linux-7.2.3/drivers/scsi/fnic/fip.c
+1005
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File diff suppressed because it is too large Load Diff
linux-7.2.3/drivers/scsi/fnic/fip.h
+159
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@@ -0,0 +1,159 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _FIP_H_
#define _FIP_H_
#include "fdls_fc.h"
#include "fnic_fdls.h"
#include <scsi/fc/fc_fip.h>
/* Drop the cast from the standard definition */
#define FCOE_ALL_FCFS_MAC {0x01, 0x10, 0x18, 0x01, 0x00, 0x02}
#define FCOE_MAX_SIZE 0x082E
#define FCOE_CTLR_FIPVLAN_TOV (3*1000)
#define FCOE_CTLR_FCS_TOV (3*1000)
#define FCOE_CTLR_MAX_SOL (5*1000)
#define FIP_DISC_SOL_LEN (6)
#define FIP_VLAN_REQ_LEN (2)
#define FIP_ENODE_KA_LEN (2)
#define FIP_VN_KA_LEN (7)
#define FIP_FLOGI_LEN (38)
enum fdls_vlan_state {
FIP_VLAN_AVAIL,
FIP_VLAN_SENT
};
enum fdls_fip_state {
FDLS_FIP_INIT,
FDLS_FIP_VLAN_DISCOVERY_STARTED,
FDLS_FIP_FCF_DISCOVERY_STARTED,
FDLS_FIP_FLOGI_STARTED,
FDLS_FIP_FLOGI_COMPLETE,
};
/*
* VLAN entry.
*/
struct fcoe_vlan {
struct list_head list;
uint16_t vid; /* vlan ID */
uint16_t sol_count; /* no. of sols sent */
uint16_t state; /* state */
};
struct fip_vlan_req {
struct ethhdr eth;
struct fip_header fip;
struct fip_mac_desc mac_desc;
} __packed;
struct fip_vlan_notif {
struct fip_header fip;
struct fip_vlan_desc vlans_desc[];
} __packed;
struct fip_vn_port_ka {
struct ethhdr eth;
struct fip_header fip;
struct fip_mac_desc mac_desc;
struct fip_vn_desc vn_port_desc;
} __packed;
struct fip_enode_ka {
struct ethhdr eth;
struct fip_header fip;
struct fip_mac_desc mac_desc;
} __packed;
struct fip_cvl {
struct fip_header fip;
struct fip_mac_desc fcf_mac_desc;
struct fip_wwn_desc name_desc;
struct fip_vn_desc vn_ports_desc[];
} __packed;
struct fip_flogi_desc {
struct fip_desc fd_desc;
uint16_t rsvd;
struct fc_std_flogi flogi;
} __packed;
struct fip_flogi_rsp_desc {
struct fip_desc fd_desc;
uint16_t rsvd;
struct fc_std_flogi flogi;
} __packed;
struct fip_flogi {
struct ethhdr eth;
struct fip_header fip;
struct fip_flogi_desc flogi_desc;
struct fip_mac_desc mac_desc;
} __packed;
struct fip_flogi_rsp {
struct fip_header fip;
struct fip_flogi_rsp_desc rsp_desc;
struct fip_mac_desc mac_desc;
} __packed;
struct fip_discovery {
struct ethhdr eth;
struct fip_header fip;
struct fip_mac_desc mac_desc;
struct fip_wwn_desc name_desc;
struct fip_size_desc fcoe_desc;
} __packed;
struct fip_disc_adv {
struct fip_header fip;
struct fip_pri_desc prio_desc;
struct fip_mac_desc mac_desc;
struct fip_wwn_desc name_desc;
struct fip_fab_desc fabric_desc;
struct fip_fka_desc fka_adv_desc;
} __packed;
void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct fip_header *fiph);
void fnic_fcoe_fip_discovery_resp(struct fnic *fnic, struct fip_header *fiph);
void fnic_fcoe_process_flogi_resp(struct fnic *fnic, struct fip_header *fiph);
void fnic_work_on_fip_timer(struct work_struct *work);
void fnic_work_on_fcs_ka_timer(struct work_struct *work);
void fnic_fcoe_send_vlan_req(struct fnic *fnic);
void fnic_fcoe_start_fcf_discovery(struct fnic *fnic);
void fnic_fcoe_start_flogi(struct fnic *fnic);
void fnic_fcoe_process_cvl(struct fnic *fnic, struct fip_header *fiph);
void fnic_vlan_discovery_timeout(struct fnic *fnic);
extern struct workqueue_struct *fnic_fip_queue;
#ifdef FNIC_DEBUG
static inline void
fnic_debug_dump_fip_frame(struct fnic *fnic, struct ethhdr *eth,
int len, char *pfx)
{
struct fip_header *fiph = (struct fip_header *)(eth + 1);
u16 op = be16_to_cpu(fiph->fip_op);
u8 sub = fiph->fip_subcode;
FNIC_FCS_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
"FIP %s packet contents: op: 0x%x sub: 0x%x (len = %d)",
pfx, op, sub, len);
fnic_debug_dump(fnic, (uint8_t *)eth, len);
}
#else /* FNIC_DEBUG */
static inline void
fnic_debug_dump_fip_frame(struct fnic *fnic, struct ethhdr *eth,
int len, char *pfx) {}
#endif /* FNIC_DEBUG */
#endif /* _FIP_H_ */
linux-7.2.3/drivers/scsi/fnic/fnic.h
+631
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@@ -0,0 +1,631 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _FNIC_H_
#define _FNIC_H_
#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/workqueue.h>
#include <linux/bitops.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc_frame.h>
#include "fnic_io.h"
#include "fnic_res.h"
#include "fnic_trace.h"
#include "fnic_stats.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_wq_copy.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_scsi.h"
#include "fnic_fdls.h"
#define DRV_NAME "fnic"
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
#define DRV_VERSION "1.8.0.3"
#define PFX DRV_NAME ": "
#define DFX DRV_NAME "%d: "
#define FABRIC_LOGO_MAX_RETRY 3
#define DESC_CLEAN_LOW_WATERMARK 8
#define FNIC_UCSM_DFLT_THROTTLE_CNT_BLD 16 /* UCSM default throttle count */
#define FNIC_MIN_IO_REQ 256 /* Min IO throttle count */
#define FNIC_MAX_IO_REQ 1024 /* scsi_cmnd tag map entries */
#define FNIC_DFLT_IO_REQ 256 /* Default scsi_cmnd tag map entries */
#define FNIC_DFLT_QUEUE_DEPTH 256
#define FNIC_STATS_RATE_LIMIT 4 /* limit rate at which stats are pulled up */
#define LUN0_DELAY_TIME 9
/*
* Tag bits used for special requests.
*/
#define FNIC_TAG_ABORT BIT(30) /* tag bit indicating abort */
#define FNIC_TAG_DEV_RST BIT(29) /* indicates device reset */
#define FNIC_TAG_MASK (BIT(24) - 1) /* mask for lookup */
#define FNIC_NO_TAG -1
/*
* Command flags to identify the type of command and for other future
* use.
*/
#define FNIC_NO_FLAGS 0
#define FNIC_IO_INITIALIZED BIT(0)
#define FNIC_IO_ISSUED BIT(1)
#define FNIC_IO_DONE BIT(2)
#define FNIC_IO_REQ_NULL BIT(3)
#define FNIC_IO_ABTS_PENDING BIT(4)
#define FNIC_IO_ABORTED BIT(5)
#define FNIC_IO_ABTS_ISSUED BIT(6)
#define FNIC_IO_TERM_ISSUED BIT(7)
#define FNIC_IO_INTERNAL_TERM_ISSUED BIT(8)
#define FNIC_IO_ABT_TERM_DONE BIT(9)
#define FNIC_IO_ABT_TERM_REQ_NULL BIT(10)
#define FNIC_IO_ABT_TERM_TIMED_OUT BIT(11)
#define FNIC_DEVICE_RESET BIT(12) /* Device reset request */
#define FNIC_DEV_RST_ISSUED BIT(13)
#define FNIC_DEV_RST_TIMED_OUT BIT(14)
#define FNIC_DEV_RST_ABTS_ISSUED BIT(15)
#define FNIC_DEV_RST_TERM_ISSUED BIT(16)
#define FNIC_DEV_RST_DONE BIT(17)
#define FNIC_DEV_RST_REQ_NULL BIT(18)
#define FNIC_DEV_RST_ABTS_DONE BIT(19)
#define FNIC_DEV_RST_TERM_DONE BIT(20)
#define FNIC_DEV_RST_ABTS_PENDING BIT(21)
#define FNIC_FW_RESET_TIMEOUT 60000 /* mSec */
#define FNIC_FCOE_MAX_CMD_LEN 16
/* Retry supported by rport (returned by PRLI service parameters) */
#define FNIC_FC_RP_FLAGS_RETRY 0x1
/* Cisco vendor id */
#define PCI_VENDOR_ID_CISCO 0x1137
#define PCI_DEVICE_ID_CISCO_VIC_FC 0x0045 /* fc vnic */
/* sereno pcie switch */
#define PCI_DEVICE_ID_CISCO_SERENO 0x004e
#define PCI_DEVICE_ID_CISCO_CRUZ 0x007a /* Cruz */
#define PCI_DEVICE_ID_CISCO_BODEGA 0x0131 /* Bodega */
#define PCI_DEVICE_ID_CISCO_BEVERLY 0x025f /* Beverly */
/* Sereno */
#define PCI_SUBDEVICE_ID_CISCO_VASONA 0x004f /* vasona mezz */
#define PCI_SUBDEVICE_ID_CISCO_COTATI 0x0084 /* cotati mlom */
#define PCI_SUBDEVICE_ID_CISCO_LEXINGTON 0x0085 /* lexington pcie */
#define PCI_SUBDEVICE_ID_CISCO_ICEHOUSE 0x00cd /* Icehouse */
#define PCI_SUBDEVICE_ID_CISCO_KIRKWOODLAKE 0x00ce /* KirkwoodLake pcie */
#define PCI_SUBDEVICE_ID_CISCO_SUSANVILLE 0x012e /* Susanville MLOM */
#define PCI_SUBDEVICE_ID_CISCO_TORRANCE 0x0139 /* Torrance MLOM */
/* Cruz */
#define PCI_SUBDEVICE_ID_CISCO_CALISTOGA 0x012c /* Calistoga MLOM */
#define PCI_SUBDEVICE_ID_CISCO_MOUNTAINVIEW 0x0137 /* Cruz Mezz */
/* Cruz MountTian SIOC */
#define PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN 0x014b
#define PCI_SUBDEVICE_ID_CISCO_CLEARLAKE 0x014d /* ClearLake pcie */
/* Cruz MountTian2 SIOC */
#define PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN2 0x0157
#define PCI_SUBDEVICE_ID_CISCO_CLAREMONT 0x015d /* Claremont MLOM */
/* Bodega */
/* VIC 1457 PCIe mLOM */
#define PCI_SUBDEVICE_ID_CISCO_BRADBURY 0x0218
#define PCI_SUBDEVICE_ID_CISCO_BRENTWOOD 0x0217 /* VIC 1455 PCIe */
/* VIC 1487 PCIe mLOM */
#define PCI_SUBDEVICE_ID_CISCO_BURLINGAME 0x021a
#define PCI_SUBDEVICE_ID_CISCO_BAYSIDE 0x0219 /* VIC 1485 PCIe */
/* VIC 1440 Mezz mLOM */
#define PCI_SUBDEVICE_ID_CISCO_BAKERSFIELD 0x0215
#define PCI_SUBDEVICE_ID_CISCO_BOONVILLE 0x0216 /* VIC 1480 Mezz */
#define PCI_SUBDEVICE_ID_CISCO_BENICIA 0x024a /* VIC 1495 */
#define PCI_SUBDEVICE_ID_CISCO_BEAUMONT 0x024b /* VIC 1497 */
#define PCI_SUBDEVICE_ID_CISCO_BRISBANE 0x02af /* VIC 1467 */
#define PCI_SUBDEVICE_ID_CISCO_BENTON 0x02b0 /* VIC 1477 */
#define PCI_SUBDEVICE_ID_CISCO_TWIN_RIVER 0x02cf /* VIC 14425 */
#define PCI_SUBDEVICE_ID_CISCO_TWIN_PEAK 0x02d0 /* VIC 14825 */
/* Beverly */
#define PCI_SUBDEVICE_ID_CISCO_BERN 0x02de /* VIC 15420 */
#define PCI_SUBDEVICE_ID_CISCO_STOCKHOLM 0x02dd /* VIC 15428 */
#define PCI_SUBDEVICE_ID_CISCO_KRAKOW 0x02dc /* VIC 15411 */
#define PCI_SUBDEVICE_ID_CISCO_LUCERNE 0x02db /* VIC 15231 */
#define PCI_SUBDEVICE_ID_CISCO_TURKU 0x02e8 /* VIC 15238 */
#define PCI_SUBDEVICE_ID_CISCO_TURKU_PLUS 0x02f3 /* VIC 15237 */
#define PCI_SUBDEVICE_ID_CISCO_ZURICH 0x02df /* VIC 15230 */
#define PCI_SUBDEVICE_ID_CISCO_RIGA 0x02e0 /* VIC 15427 */
#define PCI_SUBDEVICE_ID_CISCO_GENEVA 0x02e1 /* VIC 15422 */
#define PCI_SUBDEVICE_ID_CISCO_HELSINKI 0x02e4 /* VIC 15235 */
#define PCI_SUBDEVICE_ID_CISCO_GOTHENBURG 0x02f2 /* VIC 15425 */
struct fnic_pcie_device {
u32 device;
u8 *desc;
u32 subsystem_device;
u8 *subsys_desc;
};
/*
* fnic private data per SCSI command.
* These fields are locked by the hashed io_req_lock.
*/
struct fnic_cmd_priv {
struct fnic_io_req *io_req;
enum fnic_ioreq_state state;
u32 flags;
u16 abts_status;
u16 lr_status;
};
static inline struct fnic_cmd_priv *fnic_priv(struct scsi_cmnd *cmd)
{
return scsi_cmd_priv(cmd);
}
static inline u64 fnic_flags_and_state(struct scsi_cmnd *cmd)
{
struct fnic_cmd_priv *fcmd = fnic_priv(cmd);
return ((u64)fcmd->flags << 32) | fcmd->state;
}
#define FCPIO_INVALID_CODE 0x100 /* hdr_status value unused by firmware */
#define FNIC_LUN_RESET_TIMEOUT 10000 /* mSec */
#define FNIC_HOST_RESET_TIMEOUT 10000 /* mSec */
#define FNIC_RMDEVICE_TIMEOUT 1000 /* mSec */
#define FNIC_HOST_RESET_SETTLE_TIME 30 /* Sec */
#define FNIC_ABT_TERM_DELAY_TIMEOUT 500 /* mSec */
#define FNIC_MAX_FCP_TARGET 256
#define FNIC_PCI_OFFSET 2
/**
* state_flags to identify host state along along with fnic's state
**/
#define __FNIC_FLAGS_FWRESET BIT(0) /* fwreset in progress */
#define __FNIC_FLAGS_BLOCK_IO BIT(1) /* IOs are blocked */
#define FNIC_FLAGS_NONE (0)
#define FNIC_FLAGS_FWRESET (__FNIC_FLAGS_FWRESET | \
__FNIC_FLAGS_BLOCK_IO)
#define FNIC_FLAGS_IO_BLOCKED (__FNIC_FLAGS_BLOCK_IO)
#define fnic_set_state_flags(fnicp, st_flags) \
__fnic_set_state_flags(fnicp, st_flags, 0)
#define fnic_clear_state_flags(fnicp, st_flags) \
__fnic_set_state_flags(fnicp, st_flags, 1)
enum reset_states {
NOT_IN_PROGRESS = 0,
IN_PROGRESS,
RESET_ERROR
};
enum rscn_type {
NOT_PC_RSCN = 0,
PC_RSCN
};
enum pc_rscn_handling_status {
PC_RSCN_HANDLING_NOT_IN_PROGRESS = 0,
PC_RSCN_HANDLING_IN_PROGRESS
};
enum pc_rscn_handling_feature {
PC_RSCN_HANDLING_FEATURE_OFF = 0,
PC_RSCN_HANDLING_FEATURE_ON
};
extern unsigned int fnic_fdmi_support;
extern unsigned int fnic_log_level;
extern unsigned int io_completions;
extern struct workqueue_struct *fnic_event_queue;
extern unsigned int pc_rscn_handling_feature_flag;
extern spinlock_t reset_fnic_list_lock;
extern struct list_head reset_fnic_list;
extern struct workqueue_struct *reset_fnic_work_queue;
extern struct work_struct reset_fnic_work;
#define FNIC_MAIN_LOGGING 0x01
#define FNIC_FCS_LOGGING 0x02
#define FNIC_SCSI_LOGGING 0x04
#define FNIC_ISR_LOGGING 0x08
#define FNIC_CHECK_LOGGING(LEVEL, CMD) \
do { \
if (unlikely(fnic_log_level & LEVEL)) \
do { \
CMD; \
} while (0); \
} while (0)
#define FNIC_MAIN_DBG(kern_level, host, fnic_num, fmt, args...) \
FNIC_CHECK_LOGGING(FNIC_MAIN_LOGGING, \
shost_printk(kern_level, host, \
"fnic<%d>: %s: %d: " fmt, fnic_num,\
__func__, __LINE__, ##args);)
#define FNIC_FCS_DBG(kern_level, host, fnic_num, fmt, args...) \
FNIC_CHECK_LOGGING(FNIC_FCS_LOGGING, \
shost_printk(kern_level, host, \
"fnic<%d>: %s: %d: " fmt, fnic_num,\
__func__, __LINE__, ##args);)
#define FNIC_FIP_DBG(kern_level, host, fnic_num, fmt, args...) \
FNIC_CHECK_LOGGING(FNIC_FCS_LOGGING, \
shost_printk(kern_level, host, \
"fnic<%d>: %s: %d: " fmt, fnic_num,\
__func__, __LINE__, ##args);)
#define FNIC_SCSI_DBG(kern_level, host, fnic_num, fmt, args...) \
FNIC_CHECK_LOGGING(FNIC_SCSI_LOGGING, \
shost_printk(kern_level, host, \
"fnic<%d>: %s: %d: " fmt, fnic_num,\
__func__, __LINE__, ##args);)
#define FNIC_ISR_DBG(kern_level, host, fnic_num, fmt, args...) \
FNIC_CHECK_LOGGING(FNIC_ISR_LOGGING, \
shost_printk(kern_level, host, \
"fnic<%d>: %s: %d: " fmt, fnic_num,\
__func__, __LINE__, ##args);)
#define FNIC_MAIN_NOTE(kern_level, host, fmt, args...) \
shost_printk(kern_level, host, fmt, ##args)
#define FNIC_WQ_COPY_MAX 64
#define FNIC_WQ_MAX 1
#define FNIC_RQ_MAX 1
#define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX)
#define FNIC_DFLT_IO_COMPLETIONS 256
#define FNIC_MQ_CQ_INDEX 2
extern const char *fnic_state_str[];
enum fnic_intx_intr_index {
FNIC_INTX_WQ_RQ_COPYWQ,
FNIC_INTX_DUMMY,
FNIC_INTX_NOTIFY,
FNIC_INTX_ERR,
FNIC_INTX_INTR_MAX,
};
enum fnic_msix_intr_index {
FNIC_MSIX_RQ,
FNIC_MSIX_WQ,
FNIC_MSIX_WQ_COPY,
FNIC_MSIX_ERR_NOTIFY = FNIC_MSIX_WQ_COPY + FNIC_WQ_COPY_MAX,
FNIC_MSIX_INTR_MAX,
};
struct fnic_msix_entry {
int requested;
char devname[IFNAMSIZ + 11];
irqreturn_t (*isr)(int, void *);
void *devid;
int irq_num;
};
enum fnic_state {
FNIC_IN_FC_MODE = 0,
FNIC_IN_FC_TRANS_ETH_MODE,
FNIC_IN_ETH_MODE,
FNIC_IN_ETH_TRANS_FC_MODE,
};
enum fnic_role_e {
FNIC_ROLE_FCP_INITIATOR = 0,
};
enum fnic_evt {
FNIC_EVT_START_VLAN_DISC = 1,
FNIC_EVT_START_FCF_DISC = 2,
FNIC_EVT_MAX,
};
struct fnic_frame_list {
/*
* Link to frame lists
*/
struct list_head links;
void *fp;
int frame_len;
int rx_ethhdr_stripped;
};
struct fnic_event {
struct list_head list;
struct fnic *fnic;
enum fnic_evt event;
};
struct fnic_cpy_wq {
unsigned long hw_lock_flags;
u16 active_ioreq_count;
u16 ioreq_table_size;
____cacheline_aligned struct fnic_io_req **io_req_table;
};
/* Per-instance private data structure */
struct fnic {
int fnic_num;
enum fnic_role_e role;
struct fnic_iport_s iport;
struct Scsi_Host *host;
struct vnic_dev_bar bar0;
struct fnic_msix_entry msix[FNIC_MSIX_INTR_MAX];
struct vnic_stats *stats;
unsigned long stats_time; /* time of stats update */
unsigned long stats_reset_time; /* time of stats reset */
struct vnic_nic_cfg *nic_cfg;
char name[IFNAMSIZ];
struct timer_list notify_timer; /* used for MSI interrupts */
unsigned int fnic_max_tag_id;
unsigned int err_intr_offset;
unsigned int link_intr_offset;
unsigned int wq_count;
unsigned int cq_count;
struct completion reset_completion_wait;
struct mutex sgreset_mutex;
spinlock_t sgreset_lock; /* lock for sgreset */
struct scsi_cmnd *sgreset_sc;
struct dentry *fnic_stats_debugfs_host;
struct dentry *fnic_stats_debugfs_file;
struct dentry *fnic_reset_debugfs_file;
unsigned int reset_stats;
atomic64_t io_cmpl_skip;
struct fnic_stats fnic_stats;
u32 vlan_hw_insert:1; /* let hw insert the tag */
u32 in_remove:1; /* fnic device in removal */
u32 stop_rx_link_events:1; /* stop proc. rx frames, link events */
struct completion *fw_reset_done;
u32 reset_in_progress;
atomic_t in_flight; /* io counter */
bool internal_reset_inprogress;
u32 _reserved; /* fill hole */
unsigned long state_flags; /* protected by host lock */
enum fnic_state state;
spinlock_t fnic_lock;
unsigned long lock_flags;
u16 vlan_id; /* VLAN tag including priority */
u8 data_src_addr[ETH_ALEN];
u64 fcp_input_bytes; /* internal statistic */
u64 fcp_output_bytes; /* internal statistic */
u32 link_down_cnt;
u32 soft_reset_count;
int link_status;
struct list_head list;
struct list_head links;
struct pci_dev *pdev;
struct vnic_fc_config config;
struct vnic_dev *vdev;
unsigned int raw_wq_count;
unsigned int wq_copy_count;
unsigned int rq_count;
int fw_ack_index[FNIC_WQ_COPY_MAX];
unsigned short fw_ack_recd[FNIC_WQ_COPY_MAX];
unsigned short wq_copy_desc_low[FNIC_WQ_COPY_MAX];
unsigned int intr_count;
u32 __iomem *legacy_pba;
struct fnic_host_tag *tags;
mempool_t *io_req_pool;
mempool_t *io_sgl_pool[FNIC_SGL_NUM_CACHES];
unsigned int copy_wq_base;
struct work_struct link_work;
struct work_struct frame_work;
struct work_struct flush_work;
struct list_head frame_queue;
struct list_head tx_queue;
mempool_t *frame_pool;
mempool_t *frame_elem_pool;
mempool_t *frame_recv_pool;
struct work_struct tport_work;
struct list_head tport_event_list;
char subsys_desc[14];
int subsys_desc_len;
int pc_rscn_handling_status;
/*** FIP related data members -- start ***/
void (*set_vlan)(struct fnic *, u16 vlan);
struct work_struct fip_frame_work;
struct work_struct fip_timer_work;
struct list_head fip_frame_queue;
struct timer_list fip_timer;
spinlock_t vlans_lock;
struct timer_list retry_fip_timer;
struct timer_list fcs_ka_timer;
struct timer_list enode_ka_timer;
struct timer_list vn_ka_timer;
struct list_head vlan_list;
/*** FIP related data members -- end ***/
/* copy work queue cache line section */
____cacheline_aligned struct vnic_wq_copy hw_copy_wq[FNIC_WQ_COPY_MAX];
____cacheline_aligned struct fnic_cpy_wq sw_copy_wq[FNIC_WQ_COPY_MAX];
/* completion queue cache line section */
____cacheline_aligned struct vnic_cq cq[FNIC_CQ_MAX];
spinlock_t wq_copy_lock[FNIC_WQ_COPY_MAX];
/* work queue cache line section */
____cacheline_aligned struct vnic_wq wq[FNIC_WQ_MAX];
spinlock_t wq_lock[FNIC_WQ_MAX];
/* receive queue cache line section */
____cacheline_aligned struct vnic_rq rq[FNIC_RQ_MAX];
/* interrupt resource cache line section */
____cacheline_aligned struct vnic_intr intr[FNIC_MSIX_INTR_MAX];
};
extern struct workqueue_struct *fnic_event_queue;
extern struct workqueue_struct *fnic_fip_queue;
extern const struct attribute_group *fnic_host_groups[];
void fnic_clear_intr_mode(struct fnic *fnic);
int fnic_set_intr_mode(struct fnic *fnic);
int fnic_set_intr_mode_msix(struct fnic *fnic);
void fnic_free_intr(struct fnic *fnic);
int fnic_request_intr(struct fnic *fnic);
void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf);
void fnic_handle_frame(struct work_struct *work);
void fnic_tport_event_handler(struct work_struct *work);
void fnic_handle_link(struct work_struct *work);
void fnic_handle_event(struct work_struct *work);
void fdls_reclaim_oxid_handler(struct work_struct *work);
void fdls_schedule_oxid_free(struct fnic_iport_s *iport, uint16_t *active_oxid);
void fdls_schedule_oxid_free_retry_work(struct work_struct *work);
int fnic_rq_cmpl_handler(struct fnic *fnic, int);
int fnic_alloc_rq_frame(struct vnic_rq *rq);
void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf);
void fnic_flush_tx(struct work_struct *work);
void fnic_update_mac_locked(struct fnic *, u8 *new);
enum scsi_qc_status fnic_queuecommand(struct Scsi_Host *shost,
struct scsi_cmnd *sc);
int fnic_abort_cmd(struct scsi_cmnd *);
int fnic_device_reset(struct scsi_cmnd *);
int fnic_eh_host_reset_handler(struct scsi_cmnd *sc);
int fnic_host_reset(struct Scsi_Host *shost);
void fnic_reset(struct Scsi_Host *shost);
int fnic_issue_fc_host_lip(struct Scsi_Host *shost);
void fnic_get_host_port_state(struct Scsi_Host *shost);
int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do, unsigned int cq_index);
int fnic_wq_cmpl_handler(struct fnic *fnic, int);
int fnic_flogi_reg_handler(struct fnic *fnic, u32);
void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq,
struct fcpio_host_req *desc);
int fnic_fw_reset_handler(struct fnic *fnic);
void fnic_terminate_rport_io(struct fc_rport *);
const char *fnic_state_to_str(unsigned int state);
void fnic_mq_map_queues_cpus(struct Scsi_Host *host);
void fnic_log_q_error(struct fnic *fnic);
void fnic_handle_link_event(struct fnic *fnic);
int fnic_stats_debugfs_init(struct fnic *fnic);
void fnic_stats_debugfs_remove(struct fnic *fnic);
int fnic_is_abts_pending(struct fnic *, struct scsi_cmnd *);
void fnic_handle_fip_frame(struct work_struct *work);
void fnic_reset_work_handler(struct work_struct *work);
void fnic_handle_fip_event(struct fnic *fnic);
void fnic_fcoe_reset_vlans(struct fnic *fnic);
extern void fnic_handle_fip_timer(struct timer_list *t);
static inline int
fnic_chk_state_flags_locked(struct fnic *fnic, unsigned long st_flags)
{
return ((fnic->state_flags & st_flags) == st_flags);
}
void __fnic_set_state_flags(struct fnic *, unsigned long, unsigned long);
void fnic_dump_fchost_stats(struct Scsi_Host *, struct fc_host_statistics *);
void fnic_free_txq(struct fnic *fnic);
void fnic_free_rxq(struct fnic *fnic);
int fnic_get_desc_by_devid(struct pci_dev *pdev, char **desc,
char **subsys_desc);
void fnic_fdls_link_status_change(struct fnic *fnic, int linkup);
void fnic_delete_fcp_tports(struct fnic *fnic);
void fnic_flush_tport_event_list(struct fnic *fnic);
int fnic_count_ioreqs_wq(struct fnic *fnic, u32 hwq, u32 portid);
unsigned int fnic_count_ioreqs(struct fnic *fnic, u32 portid);
unsigned int fnic_count_all_ioreqs(struct fnic *fnic);
unsigned int fnic_count_lun_ioreqs_wq(struct fnic *fnic, u32 hwq,
struct scsi_device *device);
unsigned int fnic_count_lun_ioreqs(struct fnic *fnic,
struct scsi_device *device);
void fnic_scsi_unload(struct fnic *fnic);
void fnic_scsi_unload_cleanup(struct fnic *fnic);
int fnic_get_debug_info(struct stats_debug_info *info,
struct fnic *fnic);
struct fnic_scsi_iter_data {
struct fnic *fnic;
void *data1;
void *data2;
bool (*fn)(struct fnic *fnic, struct scsi_cmnd *sc,
void *data1, void *data2);
};
static inline bool
fnic_io_iter_handler(struct scsi_cmnd *sc, void *iter_data)
{
struct fnic_scsi_iter_data *iter = iter_data;
return iter->fn(iter->fnic, sc, iter->data1, iter->data2);
}
static inline void
fnic_scsi_io_iter(struct fnic *fnic,
bool (*fn)(struct fnic *fnic, struct scsi_cmnd *sc,
void *data1, void *data2),
void *data1, void *data2)
{
struct fnic_scsi_iter_data iter_data = {
.fn = fn,
.fnic = fnic,
.data1 = data1,
.data2 = data2,
};
scsi_host_busy_iter(fnic->host, fnic_io_iter_handler, &iter_data);
}
#ifdef FNIC_DEBUG
static inline void
fnic_debug_dump(struct fnic *fnic, uint8_t *u8arr, int len)
{
int i;
for (i = 0; i < len; i = i+8) {
FNIC_FCS_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
"%d: %02x %02x %02x %02x %02x %02x %02x %02x", i / 8,
u8arr[i + 0], u8arr[i + 1], u8arr[i + 2], u8arr[i + 3],
u8arr[i + 4], u8arr[i + 5], u8arr[i + 6], u8arr[i + 7]);
}
}
static inline void
fnic_debug_dump_fc_frame(struct fnic *fnic, struct fc_frame_header *fchdr,
int len, char *pfx)
{
uint32_t s_id, d_id;
s_id = ntoh24(fchdr->fh_s_id);
d_id = ntoh24(fchdr->fh_d_id);
FNIC_FCS_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
"%s packet contents: sid/did/type/oxid = 0x%x/0x%x/0x%x/0x%x (len = %d)\n",
pfx, s_id, d_id, fchdr->fh_type,
FNIC_STD_GET_OX_ID(fchdr), len);
fnic_debug_dump(fnic, (uint8_t *)fchdr, len);
}
#else /* FNIC_DEBUG */
static inline void
fnic_debug_dump(struct fnic *fnic, uint8_t *u8arr, int len) {}
static inline void
fnic_debug_dump_fc_frame(struct fnic *fnic, struct fc_frame_header *fchdr,
uint32_t len, char *pfx) {}
#endif /* FNIC_DEBUG */
#endif /* _FNIC_H_ */
linux-7.2.3/drivers/scsi/fnic/fnic_attrs.c
+56
View File
@@ -0,0 +1,56 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/string.h>
#include <linux/device.h>
#include <scsi/scsi_host.h>
#include "fnic.h"
static ssize_t fnic_show_state(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fnic *fnic =
*((struct fnic **) shost_priv(class_to_shost(dev)));
return sysfs_emit(buf, "%s\n", fnic_state_str[fnic->state]);
}
static ssize_t fnic_show_drv_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sysfs_emit(buf, "%s\n", DRV_VERSION);
}
static ssize_t fnic_show_link_state(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fnic *fnic =
*((struct fnic **) shost_priv(class_to_shost(dev)));
return sysfs_emit(buf, "%s\n",
((fnic->iport.state != FNIC_IPORT_STATE_INIT) &&
(fnic->iport.state != FNIC_IPORT_STATE_LINK_WAIT)) ?
"Link Up" : "Link Down");
}
static DEVICE_ATTR(fnic_state, S_IRUGO, fnic_show_state, NULL);
static DEVICE_ATTR(drv_version, S_IRUGO, fnic_show_drv_version, NULL);
static DEVICE_ATTR(link_state, S_IRUGO, fnic_show_link_state, NULL);
static struct attribute *fnic_host_attrs[] = {
&dev_attr_fnic_state.attr,
&dev_attr_drv_version.attr,
&dev_attr_link_state.attr,
NULL,
};
static const struct attribute_group fnic_host_attr_group = {
.attrs = fnic_host_attrs
};
const struct attribute_group *fnic_host_groups[] = {
&fnic_host_attr_group,
NULL
};
linux-7.2.3/drivers/scsi/fnic/fnic_debugfs.c
+721
View File
@@ -0,0 +1,721 @@
// SPDX-License-Identifier: GPL-2.0-only
// Copyright 2012 Cisco Systems, Inc. All rights reserved.
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/debugfs.h>
#include <linux/vmalloc.h>
#include "fnic.h"
extern int fnic_get_debug_info(struct stats_debug_info *debug_buffer,
struct fnic *fnic);
static struct dentry *fnic_trace_debugfs_root;
static struct dentry *fnic_trace_debugfs_file;
static struct dentry *fnic_trace_enable;
static struct dentry *fnic_stats_debugfs_root;
static struct dentry *fnic_fc_trace_debugfs_file;
static struct dentry *fnic_fc_rdata_trace_debugfs_file;
static struct dentry *fnic_fc_trace_enable;
static struct dentry *fnic_fc_trace_clear;
struct fc_trace_flag_type {
u8 fc_row_file;
u8 fc_normal_file;
u8 fnic_trace;
u8 fc_trace;
u8 fc_clear;
};
static struct fc_trace_flag_type *fc_trc_flag;
/*
* fnic_debugfs_init - Initialize debugfs for fnic debug logging
*
* Description:
* When Debugfs is configured this routine sets up the fnic debugfs
* file system. If not already created, this routine will create the
* fnic directory and statistics directory for trace buffer and
* stats logging.
*/
int fnic_debugfs_init(void)
{
fnic_trace_debugfs_root = debugfs_create_dir("fnic", NULL);
fnic_stats_debugfs_root = debugfs_create_dir("statistics",
fnic_trace_debugfs_root);
/* Allocate memory to structure */
fc_trc_flag = vmalloc(sizeof(struct fc_trace_flag_type));
if (fc_trc_flag) {
fc_trc_flag->fc_row_file = 0;
fc_trc_flag->fc_normal_file = 1;
fc_trc_flag->fnic_trace = 2;
fc_trc_flag->fc_trace = 3;
fc_trc_flag->fc_clear = 4;
return 0;
}
return -ENOMEM;
}
/*
* fnic_debugfs_terminate - Tear down debugfs infrastructure
*
* Description:
* When Debugfs is configured this routine removes debugfs file system
* elements that are specific to fnic.
*/
void fnic_debugfs_terminate(void)
{
debugfs_remove(fnic_stats_debugfs_root);
fnic_stats_debugfs_root = NULL;
debugfs_remove(fnic_trace_debugfs_root);
fnic_trace_debugfs_root = NULL;
vfree(fc_trc_flag);
}
/*
* fnic_trace_ctrl_read -
* Read trace_enable ,fc_trace_enable
* or fc_trace_clear debugfs file
* @filp: The file pointer to read from.
* @ubuf: The buffer to copy the data to.
* @cnt: The number of bytes to read.
* @ppos: The position in the file to start reading from.
*
* Description:
* This routine reads value of variable fnic_tracing_enabled or
* fnic_fc_tracing_enabled or fnic_fc_trace_cleared
* and stores into local @buf.
* It will start reading file at @ppos and
* copy up to @cnt of data to @ubuf from @buf.
*
* Returns:
* This function returns the amount of data that was read.
*/
static ssize_t fnic_trace_ctrl_read(struct file *filp,
char __user *ubuf,
size_t cnt, loff_t *ppos)
{
char buf[64];
int len;
u8 *trace_type;
len = 0;
trace_type = (u8 *)filp->private_data;
if (*trace_type == fc_trc_flag->fnic_trace)
len = sprintf(buf, "%d\n", fnic_tracing_enabled);
else if (*trace_type == fc_trc_flag->fc_trace)
len = sprintf(buf, "%d\n", fnic_fc_tracing_enabled);
else if (*trace_type == fc_trc_flag->fc_clear)
len = sprintf(buf, "%d\n", fnic_fc_trace_cleared);
else
pr_err("fnic: Cannot read to any debugfs file\n");
return simple_read_from_buffer(ubuf, cnt, ppos, buf, len);
}
/*
* fnic_trace_ctrl_write -
* Write to trace_enable, fc_trace_enable or
* fc_trace_clear debugfs file
* @filp: The file pointer to write from.
* @ubuf: The buffer to copy the data from.
* @cnt: The number of bytes to write.
* @ppos: The position in the file to start writing to.
*
* Description:
* This routine writes data from user buffer @ubuf to buffer @buf and
* sets fc_trace_enable ,tracing_enable or fnic_fc_trace_cleared
* value as per user input.
*
* Returns:
* This function returns the amount of data that was written.
*/
static ssize_t fnic_trace_ctrl_write(struct file *filp,
const char __user *ubuf,
size_t cnt, loff_t *ppos)
{
char buf[64];
unsigned long val;
int ret;
u8 *trace_type;
trace_type = (u8 *)filp->private_data;
if (cnt >= sizeof(buf))
return -EINVAL;
if (copy_from_user(&buf, ubuf, cnt))
return -EFAULT;
buf[cnt] = 0;
ret = kstrtoul(buf, 10, &val);
if (ret < 0)
return ret;
if (*trace_type == fc_trc_flag->fnic_trace)
fnic_tracing_enabled = val;
else if (*trace_type == fc_trc_flag->fc_trace)
fnic_fc_tracing_enabled = val;
else if (*trace_type == fc_trc_flag->fc_clear)
fnic_fc_trace_cleared = val;
else
pr_err("fnic: cannot write to any debugfs file\n");
(*ppos)++;
return cnt;
}
static const struct file_operations fnic_trace_ctrl_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = fnic_trace_ctrl_read,
.write = fnic_trace_ctrl_write,
};
/*
* fnic_trace_debugfs_open - Open the fnic trace log
* @inode: The inode pointer
* @file: The file pointer to attach the log output
*
* Description:
* This routine is the entry point for the debugfs open file operation.
* It allocates the necessary buffer for the log, fills the buffer from
* the in-memory log and then returns a pointer to that log in
* the private_data field in @file.
*
* Returns:
* This function returns zero if successful. On error it will return
* a negative error value.
*/
static int fnic_trace_debugfs_open(struct inode *inode,
struct file *file)
{
fnic_dbgfs_t *fnic_dbg_prt;
u8 *rdata_ptr;
rdata_ptr = (u8 *)inode->i_private;
fnic_dbg_prt = kzalloc_obj(fnic_dbgfs_t);
if (!fnic_dbg_prt)
return -ENOMEM;
if (*rdata_ptr == fc_trc_flag->fnic_trace) {
fnic_dbg_prt->buffer = vzalloc(array3_size(3, trace_max_pages,
PAGE_SIZE));
if (!fnic_dbg_prt->buffer) {
kfree(fnic_dbg_prt);
return -ENOMEM;
}
fnic_dbg_prt->buffer_len = fnic_get_trace_data(fnic_dbg_prt);
} else {
fnic_dbg_prt->buffer =
vzalloc(array3_size(3, fnic_fc_trace_max_pages,
PAGE_SIZE));
if (!fnic_dbg_prt->buffer) {
kfree(fnic_dbg_prt);
return -ENOMEM;
}
fnic_dbg_prt->buffer_len =
fnic_fc_trace_get_data(fnic_dbg_prt, *rdata_ptr);
}
file->private_data = fnic_dbg_prt;
return 0;
}
/*
* fnic_trace_debugfs_lseek - Seek through a debugfs file
* @file: The file pointer to seek through.
* @offset: The offset to seek to or the amount to seek by.
* @howto: Indicates how to seek.
*
* Description:
* This routine is the entry point for the debugfs lseek file operation.
* The @howto parameter indicates whether @offset is the offset to directly
* seek to, or if it is a value to seek forward or reverse by. This function
* figures out what the new offset of the debugfs file will be and assigns
* that value to the f_pos field of @file.
*
* Returns:
* This function returns the new offset if successful and returns a negative
* error if unable to process the seek.
*/
static loff_t fnic_trace_debugfs_lseek(struct file *file,
loff_t offset,
int howto)
{
fnic_dbgfs_t *fnic_dbg_prt = file->private_data;
return fixed_size_llseek(file, offset, howto,
fnic_dbg_prt->buffer_len);
}
/*
* fnic_trace_debugfs_read - Read a debugfs file
* @file: The file pointer to read from.
* @ubuf: The buffer to copy the data to.
* @nbytes: The number of bytes to read.
* @pos: The position in the file to start reading from.
*
* Description:
* This routine reads data from the buffer indicated in the private_data
* field of @file. It will start reading at @pos and copy up to @nbytes of
* data to @ubuf.
*
* Returns:
* This function returns the amount of data that was read (this could be
* less than @nbytes if the end of the file was reached).
*/
static ssize_t fnic_trace_debugfs_read(struct file *file,
char __user *ubuf,
size_t nbytes,
loff_t *pos)
{
fnic_dbgfs_t *fnic_dbg_prt = file->private_data;
int rc = 0;
rc = simple_read_from_buffer(ubuf, nbytes, pos,
fnic_dbg_prt->buffer,
fnic_dbg_prt->buffer_len);
return rc;
}
/*
* fnic_trace_debugfs_release - Release the buffer used to store
* debugfs file data
* @inode: The inode pointer
* @file: The file pointer that contains the buffer to release
*
* Description:
* This routine frees the buffer that was allocated when the debugfs
* file was opened.
*
* Returns:
* This function returns zero.
*/
static int fnic_trace_debugfs_release(struct inode *inode,
struct file *file)
{
fnic_dbgfs_t *fnic_dbg_prt = file->private_data;
vfree(fnic_dbg_prt->buffer);
kfree(fnic_dbg_prt);
return 0;
}
static const struct file_operations fnic_trace_debugfs_fops = {
.owner = THIS_MODULE,
.open = fnic_trace_debugfs_open,
.llseek = fnic_trace_debugfs_lseek,
.read = fnic_trace_debugfs_read,
.release = fnic_trace_debugfs_release,
};
/*
* fnic_trace_debugfs_init - Initialize debugfs for fnic trace logging
*
* Description:
* When Debugfs is configured this routine sets up the fnic debugfs
* file system. If not already created, this routine will create the
* create file trace to log fnic trace buffer output into debugfs and
* it will also create file trace_enable to control enable/disable of
* trace logging into trace buffer.
*/
void fnic_trace_debugfs_init(void)
{
fnic_trace_enable = debugfs_create_file("tracing_enable",
S_IFREG|S_IRUGO|S_IWUSR,
fnic_trace_debugfs_root,
&(fc_trc_flag->fnic_trace),
&fnic_trace_ctrl_fops);
fnic_trace_debugfs_file = debugfs_create_file("trace",
S_IFREG|S_IRUGO|S_IWUSR,
fnic_trace_debugfs_root,
&(fc_trc_flag->fnic_trace),
&fnic_trace_debugfs_fops);
}
/*
* fnic_trace_debugfs_terminate - Tear down debugfs infrastructure
*
* Description:
* When Debugfs is configured this routine removes debugfs file system
* elements that are specific to fnic trace logging.
*/
void fnic_trace_debugfs_terminate(void)
{
debugfs_remove(fnic_trace_debugfs_file);
fnic_trace_debugfs_file = NULL;
debugfs_remove(fnic_trace_enable);
fnic_trace_enable = NULL;
}
/*
* fnic_fc_trace_debugfs_init -
* Initialize debugfs for fnic control frame trace logging
*
* Description:
* When Debugfs is configured this routine sets up the fnic_fc debugfs
* file system. If not already created, this routine will create the
* create file trace to log fnic fc trace buffer output into debugfs and
* it will also create file fc_trace_enable to control enable/disable of
* trace logging into trace buffer.
*/
void fnic_fc_trace_debugfs_init(void)
{
fnic_fc_trace_enable = debugfs_create_file("fc_trace_enable",
S_IFREG|S_IRUGO|S_IWUSR,
fnic_trace_debugfs_root,
&(fc_trc_flag->fc_trace),
&fnic_trace_ctrl_fops);
fnic_fc_trace_clear = debugfs_create_file("fc_trace_clear",
S_IFREG|S_IRUGO|S_IWUSR,
fnic_trace_debugfs_root,
&(fc_trc_flag->fc_clear),
&fnic_trace_ctrl_fops);
fnic_fc_rdata_trace_debugfs_file =
debugfs_create_file("fc_trace_rdata",
S_IFREG|S_IRUGO|S_IWUSR,
fnic_trace_debugfs_root,
&(fc_trc_flag->fc_normal_file),
&fnic_trace_debugfs_fops);
fnic_fc_trace_debugfs_file =
debugfs_create_file("fc_trace",
S_IFREG|S_IRUGO|S_IWUSR,
fnic_trace_debugfs_root,
&(fc_trc_flag->fc_row_file),
&fnic_trace_debugfs_fops);
}
/*
* fnic_fc_trace_debugfs_terminate - Tear down debugfs infrastructure
*
* Description:
* When Debugfs is configured this routine removes debugfs file system
* elements that are specific to fnic_fc trace logging.
*/
void fnic_fc_trace_debugfs_terminate(void)
{
debugfs_remove(fnic_fc_trace_debugfs_file);
fnic_fc_trace_debugfs_file = NULL;
debugfs_remove(fnic_fc_rdata_trace_debugfs_file);
fnic_fc_rdata_trace_debugfs_file = NULL;
debugfs_remove(fnic_fc_trace_enable);
fnic_fc_trace_enable = NULL;
debugfs_remove(fnic_fc_trace_clear);
fnic_fc_trace_clear = NULL;
}
/*
* fnic_reset_stats_open - Open the reset_stats file
* @inode: The inode pointer.
* @file: The file pointer to attach the stats reset flag.
*
* Description:
* This routine opens a debugsfs file reset_stats and stores i_private data
* to debug structure to retrieve later for while performing other
* file oprations.
*
* Returns:
* This function returns zero if successful.
*/
static int fnic_reset_stats_open(struct inode *inode, struct file *file)
{
struct stats_debug_info *debug;
debug = kzalloc_obj(struct stats_debug_info);
if (!debug)
return -ENOMEM;
debug->i_private = inode->i_private;
file->private_data = debug;
return 0;
}
/*
* fnic_reset_stats_read - Read a reset_stats debugfs file
* @filp: The file pointer to read from.
* @ubuf: The buffer to copy the data to.
* @cnt: The number of bytes to read.
* @ppos: The position in the file to start reading from.
*
* Description:
* This routine reads value of variable reset_stats
* and stores into local @buf. It will start reading file at @ppos and
* copy up to @cnt of data to @ubuf from @buf.
*
* Returns:
* This function returns the amount of data that was read.
*/
static ssize_t fnic_reset_stats_read(struct file *file,
char __user *ubuf,
size_t cnt, loff_t *ppos)
{
struct stats_debug_info *debug = file->private_data;
struct fnic *fnic = (struct fnic *)debug->i_private;
char buf[64];
int len;
len = sprintf(buf, "%u\n", fnic->reset_stats);
return simple_read_from_buffer(ubuf, cnt, ppos, buf, len);
}
/*
* fnic_reset_stats_write - Write to reset_stats debugfs file
* @filp: The file pointer to write from.
* @ubuf: The buffer to copy the data from.
* @cnt: The number of bytes to write.
* @ppos: The position in the file to start writing to.
*
* Description:
* This routine writes data from user buffer @ubuf to buffer @buf and
* resets cumulative stats of fnic.
*
* Returns:
* This function returns the amount of data that was written.
*/
static ssize_t fnic_reset_stats_write(struct file *file,
const char __user *ubuf,
size_t cnt, loff_t *ppos)
{
struct stats_debug_info *debug = file->private_data;
struct fnic *fnic = (struct fnic *)debug->i_private;
struct fnic_stats *stats = &fnic->fnic_stats;
u64 *io_stats_p = (u64 *)&stats->io_stats;
u64 *fw_stats_p = (u64 *)&stats->fw_stats;
char buf[64];
unsigned long val;
int ret;
if (cnt >= sizeof(buf))
return -EINVAL;
if (copy_from_user(&buf, ubuf, cnt))
return -EFAULT;
buf[cnt] = 0;
ret = kstrtoul(buf, 10, &val);
if (ret < 0)
return ret;
fnic->reset_stats = val;
if (fnic->reset_stats) {
/* Skip variable is used to avoid descrepancies to Num IOs
* and IO Completions stats. Skip incrementing No IO Compls
* for pending active IOs after reset stats
*/
atomic64_set(&fnic->io_cmpl_skip,
atomic64_read(&stats->io_stats.active_ios));
memset(&stats->abts_stats, 0, sizeof(struct abort_stats));
memset(&stats->term_stats, 0,
sizeof(struct terminate_stats));
memset(&stats->reset_stats, 0, sizeof(struct reset_stats));
memset(&stats->misc_stats, 0, sizeof(struct misc_stats));
memset(&stats->vlan_stats, 0, sizeof(struct vlan_stats));
memset(io_stats_p+1, 0,
sizeof(struct io_path_stats) - sizeof(u64));
memset(fw_stats_p+1, 0,
sizeof(struct fw_stats) - sizeof(u64));
ktime_get_real_ts64(&stats->stats_timestamps.last_reset_time);
}
(*ppos)++;
return cnt;
}
/*
* fnic_reset_stats_release - Release the buffer used to store
* debugfs file data
* @inode: The inode pointer
* @file: The file pointer that contains the buffer to release
*
* Description:
* This routine frees the buffer that was allocated when the debugfs
* file was opened.
*
* Returns:
* This function returns zero.
*/
static int fnic_reset_stats_release(struct inode *inode,
struct file *file)
{
struct stats_debug_info *debug = file->private_data;
kfree(debug);
return 0;
}
/*
* fnic_stats_debugfs_open - Open the stats file for specific host
* and get fnic stats.
* @inode: The inode pointer.
* @file: The file pointer to attach the specific host statistics.
*
* Description:
* This routine opens a debugsfs file stats of specific host and print
* fnic stats.
*
* Returns:
* This function returns zero if successful.
*/
static int fnic_stats_debugfs_open(struct inode *inode,
struct file *file)
{
struct fnic *fnic = inode->i_private;
struct fnic_stats *fnic_stats = &fnic->fnic_stats;
struct stats_debug_info *debug;
int buf_size = 2 * PAGE_SIZE;
debug = kzalloc_obj(struct stats_debug_info);
if (!debug)
return -ENOMEM;
debug->debug_buffer = vmalloc(buf_size);
if (!debug->debug_buffer) {
kfree(debug);
return -ENOMEM;
}
debug->buf_size = buf_size;
memset((void *)debug->debug_buffer, 0, buf_size);
debug->buffer_len = fnic_get_stats_data(debug, fnic_stats);
debug->buffer_len += fnic_get_debug_info(debug, fnic);
file->private_data = debug;
return 0;
}
/*
* fnic_stats_debugfs_read - Read a debugfs file
* @file: The file pointer to read from.
* @ubuf: The buffer to copy the data to.
* @nbytes: The number of bytes to read.
* @pos: The position in the file to start reading from.
*
* Description:
* This routine reads data from the buffer indicated in the private_data
* field of @file. It will start reading at @pos and copy up to @nbytes of
* data to @ubuf.
*
* Returns:
* This function returns the amount of data that was read (this could be
* less than @nbytes if the end of the file was reached).
*/
static ssize_t fnic_stats_debugfs_read(struct file *file,
char __user *ubuf,
size_t nbytes,
loff_t *pos)
{
struct stats_debug_info *debug = file->private_data;
int rc = 0;
rc = simple_read_from_buffer(ubuf, nbytes, pos,
debug->debug_buffer,
debug->buffer_len);
return rc;
}
/*
* fnic_stats_stats_release - Release the buffer used to store
* debugfs file data
* @inode: The inode pointer
* @file: The file pointer that contains the buffer to release
*
* Description:
* This routine frees the buffer that was allocated when the debugfs
* file was opened.
*
* Returns:
* This function returns zero.
*/
static int fnic_stats_debugfs_release(struct inode *inode,
struct file *file)
{
struct stats_debug_info *debug = file->private_data;
vfree(debug->debug_buffer);
kfree(debug);
return 0;
}
static const struct file_operations fnic_stats_debugfs_fops = {
.owner = THIS_MODULE,
.open = fnic_stats_debugfs_open,
.read = fnic_stats_debugfs_read,
.release = fnic_stats_debugfs_release,
};
static const struct file_operations fnic_reset_debugfs_fops = {
.owner = THIS_MODULE,
.open = fnic_reset_stats_open,
.read = fnic_reset_stats_read,
.write = fnic_reset_stats_write,
.release = fnic_reset_stats_release,
};
/*
* fnic_stats_init - Initialize stats struct and create stats file per fnic
*
* Description:
* When Debugfs is configured this routine sets up the stats file per fnic
* It will create file stats and reset_stats under statistics/host# directory
* to log per fnic stats.
*/
int fnic_stats_debugfs_init(struct fnic *fnic)
{
char name[16];
snprintf(name, sizeof(name), "host%d", fnic->host->host_no);
fnic->fnic_stats_debugfs_host = debugfs_create_dir(name,
fnic_stats_debugfs_root);
fnic->fnic_stats_debugfs_file = debugfs_create_file("stats",
S_IFREG|S_IRUGO|S_IWUSR,
fnic->fnic_stats_debugfs_host,
fnic,
&fnic_stats_debugfs_fops);
fnic->fnic_reset_debugfs_file = debugfs_create_file("reset_stats",
S_IFREG|S_IRUGO|S_IWUSR,
fnic->fnic_stats_debugfs_host,
fnic,
&fnic_reset_debugfs_fops);
return 0;
}
/*
* fnic_stats_debugfs_remove - Tear down debugfs infrastructure of stats
*
* Description:
* When Debugfs is configured this routine removes debugfs file system
* elements that are specific to fnic stats.
*/
void fnic_stats_debugfs_remove(struct fnic *fnic)
{
if (!fnic)
return;
debugfs_remove(fnic->fnic_stats_debugfs_file);
fnic->fnic_stats_debugfs_file = NULL;
debugfs_remove(fnic->fnic_reset_debugfs_file);
fnic->fnic_reset_debugfs_file = NULL;
debugfs_remove(fnic->fnic_stats_debugfs_host);
fnic->fnic_stats_debugfs_host = NULL;
}
linux-7.2.3/drivers/scsi/fnic/fnic_fcs.c
+1180
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File diff suppressed because it is too large Load Diff
linux-7.2.3/drivers/scsi/fnic/fnic_fdls.h
+435
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@@ -0,0 +1,435 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _FNIC_FDLS_H_
#define _FNIC_FDLS_H_
#include "fnic_stats.h"
#include "fdls_fc.h"
/* FDLS - Fabric discovery and login services
* -> VLAN discovery
* -> retry every retry delay seconds until it succeeds.
* <- List of VLANs
*
* -> Solicitation
* <- Solicitation response (Advertisement)
*
* -> FCF selection & FLOGI ( FLOGI timeout - 2 * E_D_TOV)
* <- FLOGI response
*
* -> FCF keep alive
* <- FCF keep alive
*
* -> PLOGI to FFFFFC (DNS) (PLOGI timeout - 2 * R_A_TOV)
* -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
* <- PLOGI response
* -> Retry PLOGI to FFFFFC (DNS) - Number of retries from vnic.cfg
*
* -> SCR to FFFFFC (DNS) (SCR timeout - 2 * R_A_TOV)
* -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
* <- SCR response
* -> Retry SCR - Number of retries 2
*
* -> GPN_FT to FFFFFC (GPN_FT timeout - 2 * R_A_TOV)a
* -> Retry on BUSY until it succeeds
* -> Retry on BUSY until it succeeds
* -> 2 retries on timeout
*
* -> RFT_ID to FFFFFC (DNS) (RFT_ID timeout - 3 * R_A_TOV)
* -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
* -> Retry RFT_ID to FFFFFC (DNS) (Number of retries 2 )
* -> Ignore if both retires fail.
*
* Session establishment with targets
* For each PWWN
* -> PLOGI to FCID of that PWWN (PLOGI timeout 2 * R_A_TOV)
* -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
* <- PLOGI response
* -> Retry PLOGI. Num retries using vnic.cfg
*
* -> PRLI to FCID of that PWWN (PRLI timeout 2 * R_A_TOV)
* -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
* <- PRLI response
* -> Retry PRLI. Num retries using vnic.cfg
*
*/
#define FDLS_RETRY_COUNT 2
/*
* OXID encoding:
* bits 0-8: oxid idx - allocated from poool
* bits 9-13: oxid frame code from fnic_oxid_frame_type_e
* bits 14-15: all zeros
*/
#define FNIC_OXID_POOL_SZ (512) /* always power of 2 */
#define FNIC_OXID_ENCODE(idx, frame_type) (frame_type | idx)
#define FNIC_FRAME_MASK 0xFE00
#define FNIC_FRAME_TYPE(oxid) (oxid & FNIC_FRAME_MASK)
#define FNIC_OXID_IDX(oxid) ((oxid) & (FNIC_OXID_POOL_SZ - 1))
#define OXID_RECLAIM_TOV(iport) (2 * iport->r_a_tov) /* in milliseconds */
#define FNIC_FDLS_FABRIC_ABORT_ISSUED 0x1
#define FNIC_FDLS_FPMA_LEARNT 0x2
/* tport flags */
#define FNIC_FDLS_TPORT_IN_GPN_FT_LIST 0x1
#define FNIC_FDLS_TGT_ABORT_ISSUED 0x2
#define FNIC_FDLS_TPORT_SEND_ADISC 0x4
#define FNIC_FDLS_RETRY_FRAME 0x8
#define FNIC_FDLS_TPORT_BUSY 0x10
#define FNIC_FDLS_TPORT_TERMINATING 0x20
#define FNIC_FDLS_TPORT_DELETED 0x40
#define FNIC_FDLS_SCSI_REGISTERED 0x200
/* Retry supported by rport(returned by prli service parameters) */
#define FDLS_FC_RP_FLAGS_RETRY 0x1
#define fdls_set_state(_fdls_fabric, _state) ((_fdls_fabric)->state = _state)
#define fdls_get_state(_fdls_fabric) ((_fdls_fabric)->state)
#define FNIC_FDMI_ACTIVE 0x8
#define FNIC_FIRST_LINK_UP 0x2
#define fdls_set_tport_state(_tport, _state) (_tport->state = _state)
#define fdls_get_tport_state(_tport) (_tport->state)
#define FNIC_PORTSPEED_10GBIT 1
#define FNIC_FRAME_HT_ROOM (2148)
#define FNIC_FCOE_FRAME_MAXSZ (2112)
#define FNIC_FRAME_TYPE_FABRIC_FLOGI 0x1000
#define FNIC_FRAME_TYPE_FABRIC_PLOGI 0x1200
#define FNIC_FRAME_TYPE_FABRIC_RPN 0x1400
#define FNIC_FRAME_TYPE_FABRIC_RFT 0x1600
#define FNIC_FRAME_TYPE_FABRIC_RFF 0x1800
#define FNIC_FRAME_TYPE_FABRIC_SCR 0x1A00
#define FNIC_FRAME_TYPE_FABRIC_GPN_FT 0x1C00
#define FNIC_FRAME_TYPE_FABRIC_LOGO 0x1E00
#define FNIC_FRAME_TYPE_FDMI_PLOGI 0x2000
#define FNIC_FRAME_TYPE_FDMI_RHBA 0x2200
#define FNIC_FRAME_TYPE_FDMI_RPA 0x2400
#define FNIC_FRAME_TYPE_TGT_PLOGI 0x2600
#define FNIC_FRAME_TYPE_TGT_PRLI 0x2800
#define FNIC_FRAME_TYPE_TGT_ADISC 0x2A00
#define FNIC_FRAME_TYPE_TGT_LOGO 0x2C00
struct fnic_fip_fcf_s {
uint16_t vlan_id;
uint8_t fcf_mac[6];
uint8_t fcf_priority;
uint32_t fka_adv_period;
uint8_t ka_disabled;
};
enum fnic_fdls_state_e {
FDLS_STATE_INIT = 0,
FDLS_STATE_LINKDOWN,
FDLS_STATE_FABRIC_LOGO,
FDLS_STATE_FLOGO_DONE,
FDLS_STATE_FABRIC_FLOGI,
FDLS_STATE_FABRIC_PLOGI,
FDLS_STATE_RPN_ID,
FDLS_STATE_REGISTER_FC4_TYPES,
FDLS_STATE_REGISTER_FC4_FEATURES,
FDLS_STATE_SCR,
FDLS_STATE_GPN_FT,
FDLS_STATE_TGT_DISCOVERY,
FDLS_STATE_RSCN_GPN_FT,
FDLS_STATE_SEND_GPNFT
};
struct fnic_fdls_fabric_s {
enum fnic_fdls_state_e state;
uint32_t flags;
struct list_head tport_list; /* List of discovered tports */
struct timer_list retry_timer;
int del_timer_inprogress;
int del_fdmi_timer_inprogress;
int retry_counter;
int timer_pending;
int fdmi_retry;
struct timer_list fdmi_timer;
int fdmi_pending;
};
struct fnic_fdls_fip_s {
uint32_t state;
uint32_t flogi_retry;
};
/* Message to tport_event_handler */
enum fnic_tgt_msg_id {
TGT_EV_NONE = 0,
TGT_EV_RPORT_ADD,
TGT_EV_RPORT_DEL,
TGT_EV_TPORT_DELETE,
TGT_EV_REMOVE
};
struct fnic_tport_event_s {
struct list_head links;
enum fnic_tgt_msg_id event;
void *arg1;
};
enum fdls_tgt_state_e {
FDLS_TGT_STATE_INIT = 0,
FDLS_TGT_STATE_PLOGI,
FDLS_TGT_STATE_PRLI,
FDLS_TGT_STATE_READY,
FDLS_TGT_STATE_LOGO_RECEIVED,
FDLS_TGT_STATE_ADISC,
FDL_TGT_STATE_PLOGO,
FDLS_TGT_STATE_OFFLINING,
FDLS_TGT_STATE_OFFLINE
};
struct fnic_tport_s {
struct list_head links; /* To link the tports */
enum fdls_tgt_state_e state;
uint32_t flags;
uint32_t fcid;
uint64_t wwpn;
uint64_t wwnn;
uint16_t active_oxid;
uint16_t tgt_flags;
atomic_t in_flight; /* io counter */
uint16_t max_payload_size;
uint16_t r_a_tov;
uint16_t e_d_tov;
uint16_t lun0_delay;
int max_concur_seqs;
uint32_t fcp_csp;
struct timer_list retry_timer;
int del_timer_inprogress;
int retry_counter;
int timer_pending;
unsigned int num_pending_cmds;
int nexus_restart_count;
int exch_reset_in_progress;
void *iport;
struct work_struct tport_del_work;
struct completion *tport_del_done;
struct fc_rport *rport;
char str_wwpn[20];
char str_wwnn[20];
};
/* OXID pool related structures */
struct reclaim_entry_s {
struct list_head links;
/* oxid that needs to be freed after 2*r_a_tov */
uint16_t oxid_idx;
/* in jiffies. Use this to waiting time */
unsigned long expires;
unsigned long *bitmap;
};
/* used for allocating oxids for fabric and fdmi requests */
struct fnic_oxid_pool_s {
DECLARE_BITMAP(bitmap, FNIC_OXID_POOL_SZ);
int sz; /* size of the pool or block */
int next_idx; /* used for cycling through the oxid pool */
/* retry schedule free */
DECLARE_BITMAP(pending_schedule_free, FNIC_OXID_POOL_SZ);
struct delayed_work schedule_oxid_free_retry;
/* List of oxids that need to be freed and reclaimed.
* This list is shared by all the oxid pools
*/
struct list_head oxid_reclaim_list;
/* Work associated with reclaim list */
struct delayed_work oxid_reclaim_work;
};
/* iport */
enum fnic_iport_state_e {
FNIC_IPORT_STATE_INIT = 0,
FNIC_IPORT_STATE_LINK_WAIT,
FNIC_IPORT_STATE_FIP,
FNIC_IPORT_STATE_FABRIC_DISC,
FNIC_IPORT_STATE_READY
};
struct fnic_iport_s {
enum fnic_iport_state_e state;
struct fnic *fnic;
uint64_t boot_time;
uint32_t flags;
int usefip;
uint8_t hwmac[6]; /* HW MAC Addr */
uint8_t fpma[6]; /* Fabric Provided MA */
uint8_t fcfmac[6]; /* MAC addr of Fabric */
uint16_t vlan_id;
uint32_t fcid;
/* oxid pool */
struct fnic_oxid_pool_s oxid_pool;
/*
* fabric reqs are serialized and only one req at a time.
* Tracking the oxid for sending abort
*/
uint16_t active_oxid_fabric_req;
/* fdmi only */
uint16_t active_oxid_fdmi_plogi;
uint16_t active_oxid_fdmi_rhba;
uint16_t active_oxid_fdmi_rpa;
struct fnic_fip_fcf_s selected_fcf;
struct fnic_fdls_fip_s fip;
struct fnic_fdls_fabric_s fabric;
struct list_head tport_list;
struct list_head tport_list_pending_del;
/* list of tports for which we are yet to send PLOGO */
struct list_head inprocess_tport_list;
struct list_head deleted_tport_list;
struct work_struct tport_event_work;
uint32_t e_d_tov; /* msec */
uint32_t r_a_tov; /* msec */
uint32_t link_supported_speeds;
uint32_t max_flogi_retries;
uint32_t max_plogi_retries;
uint32_t plogi_timeout;
uint32_t service_params;
uint64_t wwpn;
uint64_t wwnn;
uint16_t max_payload_size;
spinlock_t deleted_tport_lst_lock;
struct completion *flogi_reg_done;
struct fnic_iport_stats iport_stats;
char str_wwpn[20];
char str_wwnn[20];
};
struct rport_dd_data_s {
struct fnic_tport_s *tport;
struct fnic_iport_s *iport;
};
enum fnic_recv_frame_type_e {
FNIC_FABRIC_FLOGI_RSP = 1,
FNIC_FABRIC_PLOGI_RSP,
FNIC_FABRIC_RPN_RSP,
FNIC_FABRIC_RFT_RSP,
FNIC_FABRIC_RFF_RSP,
FNIC_FABRIC_SCR_RSP,
FNIC_FABRIC_GPN_FT_RSP,
FNIC_FABRIC_BLS_ABTS_RSP,
FNIC_FDMI_PLOGI_RSP,
FNIC_FDMI_REG_HBA_RSP,
FNIC_FDMI_RPA_RSP,
FNIC_FDMI_BLS_ABTS_RSP,
FNIC_FABRIC_LOGO_RSP,
/* responses to target requests */
FNIC_TPORT_PLOGI_RSP,
FNIC_TPORT_PRLI_RSP,
FNIC_TPORT_ADISC_RSP,
FNIC_TPORT_BLS_ABTS_RSP,
FNIC_TPORT_LOGO_RSP,
/* unsolicited requests */
FNIC_BLS_ABTS_REQ,
FNIC_ELS_PLOGI_REQ,
FNIC_ELS_RSCN_REQ,
FNIC_ELS_LOGO_REQ,
FNIC_ELS_ECHO_REQ,
FNIC_ELS_ADISC,
FNIC_ELS_RLS,
FNIC_ELS_RRQ,
FNIC_ELS_UNSUPPORTED_REQ,
};
enum fnic_port_speeds {
DCEM_PORTSPEED_NONE = 0,
DCEM_PORTSPEED_1G = 1000,
DCEM_PORTSPEED_2G = 2000,
DCEM_PORTSPEED_4G = 4000,
DCEM_PORTSPEED_8G = 8000,
DCEM_PORTSPEED_10G = 10000,
DCEM_PORTSPEED_16G = 16000,
DCEM_PORTSPEED_20G = 20000,
DCEM_PORTSPEED_25G = 25000,
DCEM_PORTSPEED_32G = 32000,
DCEM_PORTSPEED_40G = 40000,
DCEM_PORTSPEED_4x10G = 41000,
DCEM_PORTSPEED_50G = 50000,
DCEM_PORTSPEED_64G = 64000,
DCEM_PORTSPEED_100G = 100000,
DCEM_PORTSPEED_128G = 128000,
};
/* Function Declarations */
/* fdls_disc.c */
void fnic_fdls_disc_init(struct fnic_iport_s *iport);
void fnic_fdls_disc_start(struct fnic_iport_s *iport);
void fnic_fdls_recv_frame(struct fnic_iport_s *iport, void *rx_frame,
int len, int fchdr_offset);
void fnic_fdls_link_down(struct fnic_iport_s *iport);
int fdls_init_frame_pool(struct fnic_iport_s *iport);
uint8_t *fdls_alloc_frame(struct fnic_iport_s *iport);
uint16_t fdls_alloc_oxid(struct fnic_iport_s *iport, int oxid_frame_type,
uint16_t *active_oxid);
void fdls_free_oxid(struct fnic_iport_s *iport,
uint16_t oxid, uint16_t *active_oxid);
void fdls_tgt_logout(struct fnic_iport_s *iport,
struct fnic_tport_s *tport);
void fnic_del_fabric_timer_sync(struct fnic *fnic);
void fnic_del_tport_timer_sync(struct fnic *fnic,
struct fnic_tport_s *tport);
void fdls_send_fabric_logo(struct fnic_iport_s *iport);
int fnic_fdls_validate_and_get_frame_type(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr);
void fdls_send_tport_abts(struct fnic_iport_s *iport,
struct fnic_tport_s *tport);
bool fdls_delete_tport(struct fnic_iport_s *iport,
struct fnic_tport_s *tport);
void fdls_fdmi_timer_callback(struct timer_list *t);
void fdls_fdmi_retry_plogi(struct fnic_iport_s *iport);
/* fnic_fcs.c */
void fnic_fdls_init(struct fnic *fnic, int usefip);
void fnic_send_fcoe_frame(struct fnic_iport_s *iport, void *frame,
int frame_size);
void fnic_fcoe_send_vlan_req(struct fnic *fnic);
int fnic_send_fip_frame(struct fnic_iport_s *iport,
void *frame, int frame_size);
void fnic_fdls_learn_fcoe_macs(struct fnic_iport_s *iport, void *rx_frame,
uint8_t *fcid);
void fnic_fdls_add_tport(struct fnic_iport_s *iport,
struct fnic_tport_s *tport, unsigned long flags);
void fnic_fdls_remove_tport(struct fnic_iport_s *iport,
struct fnic_tport_s *tport,
unsigned long flags);
void fnic_fcpio_reset(struct fnic *fnic);
/* fip.c */
void fnic_fcoe_send_vlan_req(struct fnic *fnic);
void fnic_common_fip_cleanup(struct fnic *fnic);
int fdls_fip_recv_frame(struct fnic *fnic, void *frame);
void fnic_handle_fcs_ka_timer(struct timer_list *t);
void fnic_handle_enode_ka_timer(struct timer_list *t);
void fnic_handle_vn_ka_timer(struct timer_list *t);
void fnic_handle_fip_timer(struct timer_list *t);
extern void fdls_fabric_timer_callback(struct timer_list *t);
/* fnic_scsi.c */
extern void fdls_fabric_timer_callback(struct timer_list *t);
void fnic_rport_exch_reset(struct fnic *fnic, u32 fcid);
int fnic_fdls_register_portid(struct fnic_iport_s *iport, u32 port_id,
void *fp);
struct fnic_tport_s *fnic_find_tport_by_fcid(struct fnic_iport_s *iport,
uint32_t fcid);
struct fnic_tport_s *fnic_find_tport_by_wwpn(struct fnic_iport_s *iport,
uint64_t wwpn);
#endif /* _FNIC_FDLS_H_ */
linux-7.2.3/drivers/scsi/fnic/fnic_io.h
+61
View File
@@ -0,0 +1,61 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _FNIC_IO_H_
#define _FNIC_IO_H_
#include <scsi/fc/fc_fcp.h>
#include "fnic_fdls.h"
#define FNIC_DFLT_SG_DESC_CNT 32
#define FNIC_MAX_SG_DESC_CNT 256 /* Maximum descriptors per sgl */
#define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */
struct host_sg_desc {
__le64 addr;
__le32 len;
u32 _resvd;
};
struct fnic_dflt_sgl_list {
struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
};
struct fnic_sgl_list {
struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
};
enum fnic_sgl_list_type {
FNIC_SGL_CACHE_DFLT = 0, /* cache with default size sgl */
FNIC_SGL_CACHE_MAX, /* cache with max size sgl */
FNIC_SGL_NUM_CACHES /* number of sgl caches */
};
enum fnic_ioreq_state {
FNIC_IOREQ_NOT_INITED = 0,
FNIC_IOREQ_CMD_PENDING,
FNIC_IOREQ_ABTS_PENDING,
FNIC_IOREQ_ABTS_COMPLETE,
FNIC_IOREQ_CMD_COMPLETE,
};
struct fnic_io_req {
struct fnic_iport_s *iport;
struct fnic_tport_s *tport;
struct host_sg_desc *sgl_list; /* sgl list */
void *sgl_list_alloc; /* sgl list address used for free */
dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
dma_addr_t sgl_list_pa; /* dma address for sgl list */
u16 sgl_cnt;
u8 sgl_type; /* device DMA descriptor list type */
u8 io_completed:1; /* set to 1 when fw completes IO */
u32 port_id; /* remote port DID */
unsigned long start_time; /* in jiffies */
struct completion *abts_done; /* completion for abts */
struct completion *dr_done; /* completion for device reset */
unsigned int tag;
struct scsi_cmnd *sc; /* midlayer's cmd pointer */
};
#endif /* _FNIC_IO_H_ */
linux-7.2.3/drivers/scsi/fnic/fnic_isr.c
+396
View File
@@ -0,0 +1,396 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc_frame.h>
#include "vnic_dev.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "fnic_io.h"
#include "fnic.h"
static irqreturn_t fnic_isr_legacy(int irq, void *data)
{
struct fnic *fnic = data;
u32 pba;
unsigned long work_done = 0;
pba = vnic_intr_legacy_pba(fnic->legacy_pba);
if (!pba)
return IRQ_NONE;
fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
if (pba & (1 << FNIC_INTX_NOTIFY)) {
vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_NOTIFY]);
fnic_handle_link_event(fnic);
}
if (pba & (1 << FNIC_INTX_ERR)) {
vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_ERR]);
fnic_log_q_error(fnic);
}
if (pba & (1 << FNIC_INTX_DUMMY)) {
atomic64_inc(&fnic->fnic_stats.misc_stats.intx_dummy);
vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_DUMMY]);
}
if (pba & (1 << FNIC_INTX_WQ_RQ_COPYWQ)) {
work_done += fnic_wq_copy_cmpl_handler(fnic, io_completions, FNIC_MQ_CQ_INDEX);
work_done += fnic_wq_cmpl_handler(fnic, -1);
work_done += fnic_rq_cmpl_handler(fnic, -1);
vnic_intr_return_credits(&fnic->intr[FNIC_INTX_WQ_RQ_COPYWQ],
work_done,
1 /* unmask intr */,
1 /* reset intr timer */);
}
return IRQ_HANDLED;
}
static irqreturn_t fnic_isr_msi(int irq, void *data)
{
struct fnic *fnic = data;
unsigned long work_done = 0;
fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
work_done += fnic_wq_copy_cmpl_handler(fnic, io_completions, FNIC_MQ_CQ_INDEX);
work_done += fnic_wq_cmpl_handler(fnic, -1);
work_done += fnic_rq_cmpl_handler(fnic, -1);
vnic_intr_return_credits(&fnic->intr[0],
work_done,
1 /* unmask intr */,
1 /* reset intr timer */);
return IRQ_HANDLED;
}
static irqreturn_t fnic_isr_msix_rq(int irq, void *data)
{
struct fnic *fnic = data;
unsigned long rq_work_done = 0;
fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
rq_work_done = fnic_rq_cmpl_handler(fnic, -1);
vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_RQ],
rq_work_done,
1 /* unmask intr */,
1 /* reset intr timer */);
return IRQ_HANDLED;
}
static irqreturn_t fnic_isr_msix_wq(int irq, void *data)
{
struct fnic *fnic = data;
unsigned long wq_work_done = 0;
fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
wq_work_done = fnic_wq_cmpl_handler(fnic, -1);
vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_WQ],
wq_work_done,
1 /* unmask intr */,
1 /* reset intr timer */);
return IRQ_HANDLED;
}
static irqreturn_t fnic_isr_msix_wq_copy(int irq, void *data)
{
struct fnic *fnic = data;
unsigned long wq_copy_work_done = 0;
int i;
fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
i = irq - fnic->msix[0].irq_num;
if (i >= fnic->wq_copy_count + fnic->copy_wq_base ||
i < 0 || fnic->msix[i].irq_num != irq) {
for (i = fnic->copy_wq_base; i < fnic->wq_copy_count + fnic->copy_wq_base ; i++) {
if (fnic->msix[i].irq_num == irq)
break;
}
}
wq_copy_work_done = fnic_wq_copy_cmpl_handler(fnic, io_completions, i);
vnic_intr_return_credits(&fnic->intr[i],
wq_copy_work_done,
1 /* unmask intr */,
1 /* reset intr timer */);
return IRQ_HANDLED;
}
static irqreturn_t fnic_isr_msix_err_notify(int irq, void *data)
{
struct fnic *fnic = data;
fnic->fnic_stats.misc_stats.last_isr_time = jiffies;
atomic64_inc(&fnic->fnic_stats.misc_stats.isr_count);
vnic_intr_return_all_credits(&fnic->intr[fnic->err_intr_offset]);
fnic_log_q_error(fnic);
fnic_handle_link_event(fnic);
return IRQ_HANDLED;
}
void fnic_free_intr(struct fnic *fnic)
{
int i;
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
case VNIC_DEV_INTR_MODE_MSI:
free_irq(pci_irq_vector(fnic->pdev, 0), fnic);
break;
case VNIC_DEV_INTR_MODE_MSIX:
for (i = 0; i < ARRAY_SIZE(fnic->msix); i++)
if (fnic->msix[i].requested)
free_irq(pci_irq_vector(fnic->pdev, i),
fnic->msix[i].devid);
break;
default:
break;
}
}
int fnic_request_intr(struct fnic *fnic)
{
int err = 0;
int i;
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
err = request_irq(pci_irq_vector(fnic->pdev, 0),
&fnic_isr_legacy, IRQF_SHARED, DRV_NAME, fnic);
break;
case VNIC_DEV_INTR_MODE_MSI:
err = request_irq(pci_irq_vector(fnic->pdev, 0), &fnic_isr_msi,
0, fnic->name, fnic);
break;
case VNIC_DEV_INTR_MODE_MSIX:
sprintf(fnic->msix[FNIC_MSIX_RQ].devname,
"%.11s-fcs-rq", fnic->name);
fnic->msix[FNIC_MSIX_RQ].isr = fnic_isr_msix_rq;
fnic->msix[FNIC_MSIX_RQ].devid = fnic;
sprintf(fnic->msix[FNIC_MSIX_WQ].devname,
"%.11s-fcs-wq", fnic->name);
fnic->msix[FNIC_MSIX_WQ].isr = fnic_isr_msix_wq;
fnic->msix[FNIC_MSIX_WQ].devid = fnic;
for (i = fnic->copy_wq_base; i < fnic->wq_copy_count + fnic->copy_wq_base; i++) {
sprintf(fnic->msix[i].devname,
"%.11s-scsi-wq-%d", fnic->name, i-FNIC_MSIX_WQ_COPY);
fnic->msix[i].isr = fnic_isr_msix_wq_copy;
fnic->msix[i].devid = fnic;
}
sprintf(fnic->msix[fnic->err_intr_offset].devname,
"%.11s-err-notify", fnic->name);
fnic->msix[fnic->err_intr_offset].isr =
fnic_isr_msix_err_notify;
fnic->msix[fnic->err_intr_offset].devid = fnic;
for (i = 0; i < fnic->intr_count; i++) {
fnic->msix[i].irq_num = pci_irq_vector(fnic->pdev, i);
err = request_irq(fnic->msix[i].irq_num,
fnic->msix[i].isr, 0,
fnic->msix[i].devname,
fnic->msix[i].devid);
if (err) {
FNIC_ISR_DBG(KERN_ERR, fnic->host, fnic->fnic_num,
"request_irq failed with error: %d\n",
err);
fnic_free_intr(fnic);
break;
}
fnic->msix[i].requested = 1;
}
break;
default:
break;
}
return err;
}
int fnic_set_intr_mode_msix(struct fnic *fnic)
{
unsigned int n = ARRAY_SIZE(fnic->rq);
unsigned int m = ARRAY_SIZE(fnic->wq);
unsigned int o = ARRAY_SIZE(fnic->hw_copy_wq);
unsigned int min_irqs = n + m + 1 + 1; /*rq, raw wq, wq, err*/
/*
* We need n RQs, m WQs, o Copy WQs, n+m+o CQs, and n+m+o+1 INTRs
* (last INTR is used for WQ/RQ errors and notification area)
*/
FNIC_ISR_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
"rq-array size: %d wq-array size: %d copy-wq array size: %d\n",
n, m, o);
FNIC_ISR_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
"rq_count: %d raw_wq_count: %d wq_copy_count: %d cq_count: %d\n",
fnic->rq_count, fnic->raw_wq_count,
fnic->wq_copy_count, fnic->cq_count);
if (fnic->rq_count <= n && fnic->raw_wq_count <= m &&
fnic->wq_copy_count <= o) {
int vec_count = 0;
int vecs = fnic->rq_count + fnic->raw_wq_count + fnic->wq_copy_count + 1;
vec_count = pci_alloc_irq_vectors(fnic->pdev, min_irqs, vecs,
PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
FNIC_ISR_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
"allocated %d MSI-X vectors\n",
vec_count);
if (vec_count > 0) {
if (vec_count < vecs) {
FNIC_ISR_DBG(KERN_ERR, fnic->host, fnic->fnic_num,
"interrupts number mismatch: vec_count: %d vecs: %d\n",
vec_count, vecs);
if (vec_count < min_irqs) {
FNIC_ISR_DBG(KERN_ERR, fnic->host, fnic->fnic_num,
"no interrupts for copy wq\n");
return 1;
}
}
fnic->rq_count = n;
fnic->raw_wq_count = m;
fnic->copy_wq_base = fnic->rq_count + fnic->raw_wq_count;
fnic->wq_copy_count = vec_count - n - m - 1;
fnic->wq_count = fnic->raw_wq_count + fnic->wq_copy_count;
if (fnic->cq_count != vec_count - 1) {
FNIC_ISR_DBG(KERN_ERR, fnic->host, fnic->fnic_num,
"CQ count: %d does not match MSI-X vector count: %d\n",
fnic->cq_count, vec_count);
fnic->cq_count = vec_count - 1;
}
fnic->intr_count = vec_count;
fnic->err_intr_offset = fnic->rq_count + fnic->wq_count;
FNIC_ISR_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
"rq_count: %d raw_wq_count: %d copy_wq_base: %d\n",
fnic->rq_count,
fnic->raw_wq_count, fnic->copy_wq_base);
FNIC_ISR_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
"wq_copy_count: %d wq_count: %d cq_count: %d\n",
fnic->wq_copy_count,
fnic->wq_count, fnic->cq_count);
FNIC_ISR_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
"intr_count: %d err_intr_offset: %u",
fnic->intr_count,
fnic->err_intr_offset);
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_MSIX);
FNIC_ISR_DBG(KERN_INFO, fnic->host, fnic->fnic_num,
"fnic using MSI-X\n");
return 0;
}
}
return 1;
}
int fnic_set_intr_mode(struct fnic *fnic)
{
int ret_status = 0;
/*
* Set interrupt mode (INTx, MSI, MSI-X) depending
* system capabilities.
*
* Try MSI-X first
*/
ret_status = fnic_set_intr_mode_msix(fnic);
if (ret_status == 0)
return ret_status;
/*
* Next try MSI
* We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 1 INTR
*/
if (fnic->rq_count >= 1 &&
fnic->raw_wq_count >= 1 &&
fnic->wq_copy_count >= 1 &&
fnic->cq_count >= 3 &&
fnic->intr_count >= 1 &&
pci_alloc_irq_vectors(fnic->pdev, 1, 1, PCI_IRQ_MSI) == 1) {
fnic->rq_count = 1;
fnic->raw_wq_count = 1;
fnic->wq_copy_count = 1;
fnic->wq_count = 2;
fnic->cq_count = 3;
fnic->intr_count = 1;
fnic->err_intr_offset = 0;
FNIC_ISR_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
"Using MSI Interrupts\n");
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_MSI);
return 0;
}
/*
* Next try INTx
* We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 3 INTRs
* 1 INTR is used for all 3 queues, 1 INTR for queue errors
* 1 INTR for notification area
*/
if (fnic->rq_count >= 1 &&
fnic->raw_wq_count >= 1 &&
fnic->wq_copy_count >= 1 &&
fnic->cq_count >= 3 &&
fnic->intr_count >= 3) {
fnic->rq_count = 1;
fnic->raw_wq_count = 1;
fnic->wq_copy_count = 1;
fnic->cq_count = 3;
fnic->intr_count = 3;
FNIC_ISR_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num,
"Using Legacy Interrupts\n");
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX);
return 0;
}
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
return -EINVAL;
}
void fnic_clear_intr_mode(struct fnic *fnic)
{
pci_free_irq_vectors(fnic->pdev);
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX);
}
linux-7.2.3/drivers/scsi/fnic/fnic_main.c
+1405
View File
File diff suppressed because it is too large Load Diff
linux-7.2.3/drivers/scsi/fnic/fnic_pci_subsys_devid.c
+131
View File
@@ -0,0 +1,131 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/module.h>
#include <linux/mempool.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/kthread.h>
#include <linux/if_ether.h>
#include "fnic.h"
static struct fnic_pcie_device fnic_pcie_device_table[] = {
{PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_VASONA,
"VIC 1280"},
{PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_COTATI,
"VIC 1240"},
{PCI_DEVICE_ID_CISCO_SERENO, "Sereno",
PCI_SUBDEVICE_ID_CISCO_LEXINGTON, "VIC 1225"},
{PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_ICEHOUSE,
"VIC 1285"},
{PCI_DEVICE_ID_CISCO_SERENO, "Sereno",
PCI_SUBDEVICE_ID_CISCO_KIRKWOODLAKE, "VIC 1225T"},
{PCI_DEVICE_ID_CISCO_SERENO, "Sereno",
PCI_SUBDEVICE_ID_CISCO_SUSANVILLE, "VIC 1227"},
{PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_TORRANCE,
"VIC 1227T"},
{PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_CALISTOGA,
"VIC 1340"},
{PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_MOUNTAINVIEW,
"VIC 1380"},
{PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN,
"C3260-SIOC"},
{PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_CLEARLAKE,
"VIC 1385"},
{PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN2,
"C3260-SIOC"},
{PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_CLAREMONT,
"VIC 1387"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BRADBURY,
"VIC 1457"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega",
PCI_SUBDEVICE_ID_CISCO_BRENTWOOD, "VIC 1455"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega",
PCI_SUBDEVICE_ID_CISCO_BURLINGAME, "VIC 1487"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BAYSIDE,
"VIC 1485"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega",
PCI_SUBDEVICE_ID_CISCO_BAKERSFIELD, "VIC 1440"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega",
PCI_SUBDEVICE_ID_CISCO_BOONVILLE, "VIC 1480"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BENICIA,
"VIC 1495"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BEAUMONT,
"VIC 1497"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BRISBANE,
"VIC 1467"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BENTON,
"VIC 1477"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega",
PCI_SUBDEVICE_ID_CISCO_TWIN_RIVER, "VIC 14425"},
{PCI_DEVICE_ID_CISCO_BODEGA, "Bodega",
PCI_SUBDEVICE_ID_CISCO_TWIN_PEAK, "VIC 14825"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_BERN,
"VIC 15420"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly",
PCI_SUBDEVICE_ID_CISCO_STOCKHOLM, "VIC 15428"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_KRAKOW,
"VIC 15411"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly",
PCI_SUBDEVICE_ID_CISCO_LUCERNE, "VIC 15231"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_TURKU,
"VIC 15238"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_GENEVA,
"VIC 15422"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly",
PCI_SUBDEVICE_ID_CISCO_HELSINKI, "VIC 15235"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly",
PCI_SUBDEVICE_ID_CISCO_GOTHENBURG, "VIC 15425"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly",
PCI_SUBDEVICE_ID_CISCO_TURKU_PLUS, "VIC 15237"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_ZURICH,
"VIC 15230"},
{PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_RIGA,
"VIC 15427"},
{0,}
};
int fnic_get_desc_by_devid(struct pci_dev *pdev, char **desc,
char **subsys_desc)
{
unsigned short device = PCI_DEVICE_ID_CISCO_VIC_FC;
int max = ARRAY_SIZE(fnic_pcie_device_table);
struct fnic_pcie_device *t = fnic_pcie_device_table;
int index = 0;
if (pdev->device != device)
return 1;
while (t->device != 0) {
if (memcmp
((char *) &pdev->subsystem_device,
(char *) &t->subsystem_device, sizeof(short)) == 0)
break;
t++;
index++;
}
if (index >= max - 1) {
*desc = NULL;
*subsys_desc = NULL;
return 1;
}
*desc = fnic_pcie_device_table[index].desc;
*subsys_desc = fnic_pcie_device_table[index].subsys_desc;
return 0;
}
linux-7.2.3/drivers/scsi/fnic/fnic_res.c
+441
View File
@@ -0,0 +1,441 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "cq_enet_desc.h"
#include "vnic_resource.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "fnic.h"
int fnic_get_vnic_config(struct fnic *fnic)
{
struct vnic_fc_config *c = &fnic->config;
int err;
#define GET_CONFIG(m) \
do { \
err = vnic_dev_spec(fnic->vdev, \
offsetof(struct vnic_fc_config, m), \
sizeof(c->m), &c->m); \
if (err) { \
dev_err(&fnic->pdev->dev, "Error getting %s, %d\n", #m, err); \
return err; \
} \
} while (0);
GET_CONFIG(node_wwn);
GET_CONFIG(port_wwn);
GET_CONFIG(wq_enet_desc_count);
GET_CONFIG(wq_copy_desc_count);
GET_CONFIG(rq_desc_count);
GET_CONFIG(maxdatafieldsize);
GET_CONFIG(ed_tov);
GET_CONFIG(ra_tov);
GET_CONFIG(intr_timer);
GET_CONFIG(intr_timer_type);
GET_CONFIG(flags);
GET_CONFIG(flogi_retries);
GET_CONFIG(flogi_timeout);
GET_CONFIG(plogi_retries);
GET_CONFIG(plogi_timeout);
GET_CONFIG(io_throttle_count);
GET_CONFIG(link_down_timeout);
GET_CONFIG(port_down_timeout);
GET_CONFIG(port_down_io_retries);
GET_CONFIG(luns_per_tgt);
GET_CONFIG(intr_mode);
GET_CONFIG(wq_copy_count);
if ((c->flags & (VFCF_FC_INITIATOR)) == 0) {
dev_info(&fnic->pdev->dev, "vNIC role not defined (def role: FC Init)\n");
c->flags |= VFCF_FC_INITIATOR;
}
c->wq_enet_desc_count =
min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
max_t(u32, VNIC_FNIC_WQ_DESCS_MIN,
c->wq_enet_desc_count));
c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);
c->wq_copy_desc_count =
min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX,
max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN,
c->wq_copy_desc_count));
c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16);
c->rq_desc_count =
min_t(u32, VNIC_FNIC_RQ_DESCS_MAX,
max_t(u32, VNIC_FNIC_RQ_DESCS_MIN,
c->rq_desc_count));
c->rq_desc_count = ALIGN(c->rq_desc_count, 16);
c->maxdatafieldsize =
min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX,
max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN,
c->maxdatafieldsize));
c->ed_tov =
min_t(u32, VNIC_FNIC_EDTOV_MAX,
max_t(u32, VNIC_FNIC_EDTOV_MIN,
c->ed_tov));
c->ra_tov =
min_t(u32, VNIC_FNIC_RATOV_MAX,
max_t(u32, VNIC_FNIC_RATOV_MIN,
c->ra_tov));
c->flogi_retries =
min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries);
c->flogi_timeout =
min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX,
max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN,
c->flogi_timeout));
c->plogi_retries =
min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries);
c->plogi_timeout =
min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX,
max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN,
c->plogi_timeout));
c->io_throttle_count =
min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX,
max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN,
c->io_throttle_count));
c->link_down_timeout =
min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX,
c->link_down_timeout);
c->port_down_timeout =
min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX,
c->port_down_timeout);
c->port_down_io_retries =
min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX,
c->port_down_io_retries);
c->luns_per_tgt =
min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX,
max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN,
c->luns_per_tgt));
c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
/* for older firmware, GET_CONFIG will not return anything */
if (c->wq_copy_count == 0)
c->wq_copy_count = 1;
c->wq_copy_count = min_t(u16, FNIC_WQ_COPY_MAX, c->wq_copy_count);
dev_info(&fnic->pdev->dev, "fNIC MAC addr %p wq/wq_copy/rq %d/%d/%d\n",
fnic->data_src_addr,
c->wq_enet_desc_count, c->wq_copy_desc_count,
c->rq_desc_count);
dev_info(&fnic->pdev->dev, "fNIC node wwn 0x%llx port wwn 0x%llx\n",
c->node_wwn, c->port_wwn);
dev_info(&fnic->pdev->dev, "fNIC ed_tov %d ra_tov %d\n",
c->ed_tov, c->ra_tov);
dev_info(&fnic->pdev->dev, "fNIC mtu %d intr timer %d\n",
c->maxdatafieldsize, c->intr_timer);
dev_info(&fnic->pdev->dev, "fNIC flags 0x%x luns per tgt %d\n",
c->flags, c->luns_per_tgt);
dev_info(&fnic->pdev->dev, "fNIC flogi_retries %d flogi timeout %d\n",
c->flogi_retries, c->flogi_timeout);
dev_info(&fnic->pdev->dev, "fNIC plogi retries %d plogi timeout %d\n",
c->plogi_retries, c->plogi_timeout);
dev_info(&fnic->pdev->dev, "fNIC io throttle count %d link dn timeout %d\n",
c->io_throttle_count, c->link_down_timeout);
dev_info(&fnic->pdev->dev, "fNIC port dn io retries %d port dn timeout %d\n",
c->port_down_io_retries, c->port_down_timeout);
dev_info(&fnic->pdev->dev, "fNIC wq_copy_count: %d\n", c->wq_copy_count);
dev_info(&fnic->pdev->dev, "fNIC intr mode: %d\n", c->intr_mode);
return 0;
}
int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
u8 rss_hash_type,
u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable,
u8 tso_ipid_split_en, u8 ig_vlan_strip_en)
{
u64 a0, a1;
u32 nic_cfg;
int wait = 1000;
vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
rss_hash_type, rss_hash_bits, rss_base_cpu,
rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
a0 = nic_cfg;
a1 = 0;
return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
}
void fnic_get_res_counts(struct fnic *fnic)
{
fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
fnic->raw_wq_count = 1;
fnic->wq_copy_count = fnic->config.wq_copy_count;
fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
RES_TYPE_INTR_CTRL);
dev_info(&fnic->pdev->dev, "vNIC fw resources wq_count: %d\n", fnic->wq_count);
dev_info(&fnic->pdev->dev, "vNIC fw resources raw_wq_count: %d\n", fnic->raw_wq_count);
dev_info(&fnic->pdev->dev, "vNIC fw resources wq_copy_count: %d\n", fnic->wq_copy_count);
dev_info(&fnic->pdev->dev, "vNIC fw resources rq_count: %d\n", fnic->rq_count);
dev_info(&fnic->pdev->dev, "vNIC fw resources cq_count: %d\n", fnic->cq_count);
dev_info(&fnic->pdev->dev, "vNIC fw resources intr_count: %d\n", fnic->intr_count);
}
void fnic_free_vnic_resources(struct fnic *fnic)
{
unsigned int i;
for (i = 0; i < fnic->raw_wq_count; i++)
vnic_wq_free(&fnic->wq[i]);
for (i = 0; i < fnic->wq_copy_count; i++)
vnic_wq_copy_free(&fnic->hw_copy_wq[i]);
for (i = 0; i < fnic->rq_count; i++)
vnic_rq_free(&fnic->rq[i]);
for (i = 0; i < fnic->cq_count; i++)
vnic_cq_free(&fnic->cq[i]);
for (i = 0; i < fnic->intr_count; i++)
vnic_intr_free(&fnic->intr[i]);
}
int fnic_alloc_vnic_resources(struct fnic *fnic)
{
enum vnic_dev_intr_mode intr_mode;
unsigned int mask_on_assertion;
unsigned int interrupt_offset;
unsigned int error_interrupt_enable;
unsigned int error_interrupt_offset;
unsigned int i, cq_index;
unsigned int wq_copy_cq_desc_count;
int err;
intr_mode = vnic_dev_get_intr_mode(fnic->vdev);
dev_info(&fnic->pdev->dev, "vNIC interrupt mode: %s\n",
intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
"MSI-X" : "unknown");
dev_info(&fnic->pdev->dev, "res avail: wq %d cp_wq %d raw_wq %d rq %d",
fnic->wq_count, fnic->wq_copy_count,
fnic->raw_wq_count, fnic->rq_count);
dev_info(&fnic->pdev->dev, "res avail: cq %d intr %d cpy-wq desc count %d\n",
fnic->cq_count, fnic->intr_count,
fnic->config.wq_copy_desc_count);
/* Allocate Raw WQ used for FCS frames */
for (i = 0; i < fnic->raw_wq_count; i++) {
err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i,
fnic->config.wq_enet_desc_count,
sizeof(struct wq_enet_desc));
if (err)
goto err_out_cleanup;
}
/* Allocate Copy WQs used for SCSI IOs */
for (i = 0; i < fnic->wq_copy_count; i++) {
err = vnic_wq_copy_alloc(fnic->vdev, &fnic->hw_copy_wq[i],
(fnic->raw_wq_count + i),
fnic->config.wq_copy_desc_count,
sizeof(struct fcpio_host_req));
if (err)
goto err_out_cleanup;
}
/* RQ for receiving FCS frames */
for (i = 0; i < fnic->rq_count; i++) {
err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i,
fnic->config.rq_desc_count,
sizeof(struct rq_enet_desc));
if (err)
goto err_out_cleanup;
}
/* CQ for each RQ */
for (i = 0; i < fnic->rq_count; i++) {
cq_index = i;
err = vnic_cq_alloc(fnic->vdev,
&fnic->cq[cq_index], cq_index,
fnic->config.rq_desc_count,
sizeof(struct cq_enet_rq_desc));
if (err)
goto err_out_cleanup;
}
/* CQ for each WQ */
for (i = 0; i < fnic->raw_wq_count; i++) {
cq_index = fnic->rq_count + i;
err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index,
fnic->config.wq_enet_desc_count,
sizeof(struct cq_enet_wq_desc));
if (err)
goto err_out_cleanup;
}
/* CQ for each COPY WQ */
wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3);
for (i = 0; i < fnic->wq_copy_count; i++) {
cq_index = fnic->raw_wq_count + fnic->rq_count + i;
err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index],
cq_index,
wq_copy_cq_desc_count,
sizeof(struct fcpio_fw_req));
if (err)
goto err_out_cleanup;
}
for (i = 0; i < fnic->intr_count; i++) {
err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i);
if (err)
goto err_out_cleanup;
}
fnic->legacy_pba = vnic_dev_get_res(fnic->vdev,
RES_TYPE_INTR_PBA_LEGACY, 0);
if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
dev_err(&fnic->pdev->dev, "Failed to hook legacy pba resource\n");
err = -ENODEV;
goto err_out_cleanup;
}
/*
* Init RQ/WQ resources.
*
* RQ[0 to n-1] point to CQ[0 to n-1]
* WQ[0 to m-1] point to CQ[n to n+m-1]
* WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1]
*
* Note for copy wq we always initialize with cq_index = 0
*
* Error interrupt is not enabled for MSI.
*/
switch (intr_mode) {
case VNIC_DEV_INTR_MODE_INTX:
case VNIC_DEV_INTR_MODE_MSIX:
error_interrupt_enable = 1;
error_interrupt_offset = fnic->err_intr_offset;
break;
default:
error_interrupt_enable = 0;
error_interrupt_offset = 0;
break;
}
for (i = 0; i < fnic->rq_count; i++) {
cq_index = i;
vnic_rq_init(&fnic->rq[i],
cq_index,
error_interrupt_enable,
error_interrupt_offset);
}
for (i = 0; i < fnic->raw_wq_count; i++) {
cq_index = i + fnic->rq_count;
vnic_wq_init(&fnic->wq[i],
cq_index,
error_interrupt_enable,
error_interrupt_offset);
}
for (i = 0; i < fnic->wq_copy_count; i++) {
vnic_wq_copy_init(&fnic->hw_copy_wq[i],
0 /* cq_index 0 - always */,
error_interrupt_enable,
error_interrupt_offset);
}
for (i = 0; i < fnic->cq_count; i++) {
switch (intr_mode) {
case VNIC_DEV_INTR_MODE_MSIX:
interrupt_offset = i;
break;
default:
interrupt_offset = 0;
break;
}
vnic_cq_init(&fnic->cq[i],
0 /* flow_control_enable */,
1 /* color_enable */,
0 /* cq_head */,
0 /* cq_tail */,
1 /* cq_tail_color */,
1 /* interrupt_enable */,
1 /* cq_entry_enable */,
0 /* cq_message_enable */,
interrupt_offset,
0 /* cq_message_addr */);
}
/*
* Init INTR resources
*
* mask_on_assertion is not used for INTx due to the level-
* triggered nature of INTx
*/
switch (intr_mode) {
case VNIC_DEV_INTR_MODE_MSI:
case VNIC_DEV_INTR_MODE_MSIX:
mask_on_assertion = 1;
break;
default:
mask_on_assertion = 0;
break;
}
for (i = 0; i < fnic->intr_count; i++) {
vnic_intr_init(&fnic->intr[i],
fnic->config.intr_timer,
fnic->config.intr_timer_type,
mask_on_assertion);
}
/* init the stats memory by making the first call here */
err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
if (err) {
dev_err(&fnic->pdev->dev, "vnic_dev_stats_dump failed - x%x\n", err);
goto err_out_cleanup;
}
/* Clear LIF stats */
vnic_dev_stats_clear(fnic->vdev);
return 0;
err_out_cleanup:
fnic_free_vnic_resources(fnic);
return err;
}
linux-7.2.3/drivers/scsi/fnic/fnic_res.h
+237
View File
@@ -0,0 +1,237 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _FNIC_RES_H_
#define _FNIC_RES_H_
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "fnic_io.h"
#include "fcpio.h"
#include "vnic_wq_copy.h"
#include "vnic_cq_copy.h"
static inline void fnic_queue_wq_desc(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr,
unsigned int len, unsigned int fc_eof,
int vlan_tag_insert,
unsigned int vlan_tag,
int cq_entry, int sop, int eop)
{
struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
wq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
(u16)len,
0, /* mss_or_csum_offset */
(u16)fc_eof,
0, /* offload_mode */
(u8)eop, (u8)cq_entry,
1, /* fcoe_encap */
(u8)vlan_tag_insert,
(u16)vlan_tag,
0 /* loopback */);
vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop);
}
static inline void fnic_queue_wq_eth_desc(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr,
unsigned int len,
int vlan_tag_insert,
unsigned int vlan_tag,
int cq_entry)
{
struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
wq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
(u16)len,
0, /* mss_or_csum_offset */
0, /* fc_eof */
0, /* offload_mode */
1, /* eop */
(u8)cq_entry,
0, /* fcoe_encap */
(u8)vlan_tag_insert,
(u16)vlan_tag,
0 /* loopback */);
vnic_wq_post(wq, os_buf, dma_addr, len, 1, 1);
}
static inline void fnic_queue_wq_copy_desc_icmnd_16(struct vnic_wq_copy *wq,
u32 req_id,
u32 lunmap_id, u8 spl_flags,
u32 sgl_cnt, u32 sense_len,
u64 sgl_addr, u64 sns_addr,
u8 crn, u8 pri_ta,
u8 flags, u8 *scsi_cdb,
u8 cdb_len,
u32 data_len, u8 *lun,
u32 d_id, u16 mss,
u32 ratov, u32 edtov)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_ICMND_16; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.icmnd_16.lunmap_id = lunmap_id; /* index into lunmap table */
desc->u.icmnd_16.special_req_flags = spl_flags; /* exch req flags */
desc->u.icmnd_16._resvd0[0] = 0; /* reserved */
desc->u.icmnd_16._resvd0[1] = 0; /* reserved */
desc->u.icmnd_16._resvd0[2] = 0; /* reserved */
desc->u.icmnd_16.sgl_cnt = sgl_cnt; /* scatter-gather list count */
desc->u.icmnd_16.sense_len = sense_len; /* sense buffer length */
desc->u.icmnd_16.sgl_addr = sgl_addr; /* scatter-gather list addr */
desc->u.icmnd_16.sense_addr = sns_addr; /* sense buffer address */
desc->u.icmnd_16.crn = crn; /* SCSI Command Reference No.*/
desc->u.icmnd_16.pri_ta = pri_ta; /* SCSI Pri & Task attribute */
desc->u.icmnd_16._resvd1 = 0; /* reserved: should be 0 */
desc->u.icmnd_16.flags = flags; /* command flags */
memset(desc->u.icmnd_16.scsi_cdb, 0, CDB_16);
memcpy(desc->u.icmnd_16.scsi_cdb, scsi_cdb, cdb_len); /* SCSI CDB */
desc->u.icmnd_16.data_len = data_len; /* length of data expected */
memcpy(desc->u.icmnd_16.lun, lun, LUN_ADDRESS); /* LUN address */
desc->u.icmnd_16._resvd2 = 0; /* reserved */
hton24(desc->u.icmnd_16.d_id, d_id); /* FC vNIC only: Target D_ID */
desc->u.icmnd_16.mss = mss; /* FC vNIC only: max burst */
desc->u.icmnd_16.r_a_tov = ratov; /*FC vNIC only: Res. Alloc Timeout */
desc->u.icmnd_16.e_d_tov = edtov; /*FC vNIC only: Err Detect Timeout */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_itmf(struct vnic_wq_copy *wq,
u32 req_id, u32 lunmap_id,
u32 tm_req, u32 tm_id, u8 *lun,
u32 d_id, u32 r_a_tov,
u32 e_d_tov)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_ITMF; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.itmf.lunmap_id = lunmap_id; /* index into lunmap table */
desc->u.itmf.tm_req = tm_req; /* SCSI Task Management request */
desc->u.itmf.t_tag = tm_id; /* tag of fcpio to be aborted */
desc->u.itmf._resvd = 0;
memcpy(desc->u.itmf.lun, lun, LUN_ADDRESS); /* LUN address */
desc->u.itmf._resvd1 = 0;
hton24(desc->u.itmf.d_id, d_id); /* FC vNIC only: Target D_ID */
desc->u.itmf.r_a_tov = r_a_tov; /* FC vNIC only: R_A_TOV in msec */
desc->u.itmf.e_d_tov = e_d_tov; /* FC vNIC only: E_D_TOV in msec */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_flogi_reg(struct vnic_wq_copy *wq,
u32 req_id, u8 format,
u32 s_id, u8 *gw_mac)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_FLOGI_REG; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.flogi_reg.format = format;
desc->u.flogi_reg._resvd = 0;
hton24(desc->u.flogi_reg.s_id, s_id);
memcpy(desc->u.flogi_reg.gateway_mac, gw_mac, ETH_ALEN);
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_fip_reg(struct vnic_wq_copy *wq,
u32 req_id, u32 s_id,
u8 *fcf_mac, u8 *ha_mac,
u32 r_a_tov, u32 e_d_tov)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_FLOGI_FIP_REG; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.flogi_fip_reg._resvd0 = 0;
hton24(desc->u.flogi_fip_reg.s_id, s_id);
memcpy(desc->u.flogi_fip_reg.fcf_mac, fcf_mac, ETH_ALEN);
desc->u.flogi_fip_reg._resvd1 = 0;
desc->u.flogi_fip_reg.r_a_tov = r_a_tov;
desc->u.flogi_fip_reg.e_d_tov = e_d_tov;
memcpy(desc->u.flogi_fip_reg.ha_mac, ha_mac, ETH_ALEN);
desc->u.flogi_fip_reg._resvd2 = 0;
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_fw_reset(struct vnic_wq_copy *wq,
u32 req_id)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_RESET; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_lunmap(struct vnic_wq_copy *wq,
u32 req_id, u64 lunmap_addr,
u32 lunmap_len)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_LUNMAP_REQ; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.lunmap_req.addr = lunmap_addr; /* address of the buffer */
desc->u.lunmap_req.len = lunmap_len; /* len of the buffer */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_rq_desc(struct vnic_rq *rq,
void *os_buf, dma_addr_t dma_addr,
u16 len)
{
struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
rq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
RQ_ENET_TYPE_ONLY_SOP,
(u16)len);
vnic_rq_post(rq, os_buf, 0, dma_addr, len);
}
struct fnic;
int fnic_get_vnic_config(struct fnic *);
int fnic_alloc_vnic_resources(struct fnic *);
void fnic_free_vnic_resources(struct fnic *);
void fnic_get_res_counts(struct fnic *);
int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu,
u8 rss_enable, u8 tso_ipid_split_en,
u8 ig_vlan_strip_en);
#endif /* _FNIC_RES_H_ */
linux-7.2.3/drivers/scsi/fnic/fnic_scsi.c
+3035
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File diff suppressed because it is too large Load Diff
linux-7.2.3/drivers/scsi/fnic/fnic_stats.h
+175
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@@ -0,0 +1,175 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright 2013 Cisco Systems, Inc. All rights reserved. */
#ifndef _FNIC_STATS_H_
#define _FNIC_STATS_H_
#define FNIC_MQ_MAX_QUEUES 64
#include <scsi/scsi_transport_fc.h>
struct stats_timestamps {
struct timespec64 last_reset_time;
struct timespec64 last_read_time;
};
struct io_path_stats {
atomic64_t active_ios;
atomic64_t max_active_ios;
atomic64_t io_completions;
atomic64_t io_failures;
atomic64_t ioreq_null;
atomic64_t alloc_failures;
atomic64_t sc_null;
atomic64_t io_not_found;
atomic64_t num_ios;
atomic64_t io_btw_0_to_10_msec;
atomic64_t io_btw_10_to_100_msec;
atomic64_t io_btw_100_to_500_msec;
atomic64_t io_btw_500_to_5000_msec;
atomic64_t io_btw_5000_to_10000_msec;
atomic64_t io_btw_10000_to_30000_msec;
atomic64_t io_greater_than_30000_msec;
atomic64_t current_max_io_time;
atomic64_t ios[FNIC_MQ_MAX_QUEUES];
};
struct abort_stats {
atomic64_t aborts;
atomic64_t abort_failures;
atomic64_t abort_drv_timeouts;
atomic64_t abort_fw_timeouts;
atomic64_t abort_io_not_found;
atomic64_t abort_issued_btw_0_to_6_sec;
atomic64_t abort_issued_btw_6_to_20_sec;
atomic64_t abort_issued_btw_20_to_30_sec;
atomic64_t abort_issued_btw_30_to_40_sec;
atomic64_t abort_issued_btw_40_to_50_sec;
atomic64_t abort_issued_btw_50_to_60_sec;
atomic64_t abort_issued_greater_than_60_sec;
};
struct terminate_stats {
atomic64_t terminates;
atomic64_t max_terminates;
atomic64_t terminate_drv_timeouts;
atomic64_t terminate_fw_timeouts;
atomic64_t terminate_io_not_found;
atomic64_t terminate_failures;
};
struct reset_stats {
atomic64_t device_resets;
atomic64_t device_reset_failures;
atomic64_t device_reset_aborts;
atomic64_t device_reset_timeouts;
atomic64_t device_reset_terminates;
atomic64_t fw_resets;
atomic64_t fw_reset_completions;
atomic64_t fw_reset_failures;
atomic64_t fw_reset_timeouts;
atomic64_t fnic_resets;
atomic64_t fnic_reset_completions;
atomic64_t fnic_reset_failures;
};
struct fw_stats {
atomic64_t active_fw_reqs;
atomic64_t max_fw_reqs;
atomic64_t fw_out_of_resources;
atomic64_t io_fw_errs;
};
struct vlan_stats {
atomic64_t vlan_disc_reqs;
atomic64_t resp_withno_vlanID;
atomic64_t sol_expiry_count;
atomic64_t flogi_rejects;
};
struct misc_stats {
u64 last_isr_time;
u64 last_ack_time;
atomic64_t max_isr_jiffies;
atomic64_t max_isr_time_ms;
atomic64_t corr_work_done;
atomic64_t isr_count;
atomic64_t max_cq_entries;
atomic64_t ack_index_out_of_range;
atomic64_t data_count_mismatch;
atomic64_t fcpio_timeout;
atomic64_t fcpio_aborted;
atomic64_t sgl_invalid;
atomic64_t mss_invalid;
atomic64_t abts_cpwq_alloc_failures;
atomic64_t devrst_cpwq_alloc_failures;
atomic64_t io_cpwq_alloc_failures;
atomic64_t no_icmnd_itmf_cmpls;
atomic64_t check_condition;
atomic64_t queue_fulls;
atomic64_t tport_not_ready;
atomic64_t iport_not_ready;
atomic64_t frame_errors;
atomic64_t current_port_speed;
atomic64_t intx_dummy;
atomic64_t port_speed_in_mbps;
};
struct fnic_iport_stats {
atomic64_t num_linkdn;
atomic64_t num_linkup;
atomic64_t link_failure_count;
atomic64_t num_rscns;
atomic64_t rscn_redisc;
atomic64_t rscn_not_redisc;
atomic64_t frame_err;
atomic64_t num_rnid;
atomic64_t fabric_flogi_sent;
atomic64_t fabric_flogi_ls_accepts;
atomic64_t fabric_flogi_ls_rejects;
atomic64_t fabric_flogi_misc_rejects;
atomic64_t fabric_plogi_sent;
atomic64_t fabric_plogi_ls_accepts;
atomic64_t fabric_plogi_ls_rejects;
atomic64_t fabric_plogi_misc_rejects;
atomic64_t fabric_scr_sent;
atomic64_t fabric_scr_ls_accepts;
atomic64_t fabric_scr_ls_rejects;
atomic64_t fabric_scr_misc_rejects;
atomic64_t fabric_logo_sent;
atomic64_t tport_alive;
atomic64_t tport_plogi_sent;
atomic64_t tport_plogi_ls_accepts;
atomic64_t tport_plogi_ls_rejects;
atomic64_t tport_plogi_misc_rejects;
atomic64_t tport_prli_sent;
atomic64_t tport_prli_ls_accepts;
atomic64_t tport_prli_ls_rejects;
atomic64_t tport_prli_misc_rejects;
atomic64_t tport_adisc_sent;
atomic64_t tport_adisc_ls_accepts;
atomic64_t tport_adisc_ls_rejects;
atomic64_t tport_logo_sent;
atomic64_t unsupported_frames_ls_rejects;
atomic64_t unsupported_frames_dropped;
};
struct fnic_stats {
struct stats_timestamps stats_timestamps;
struct io_path_stats io_stats;
struct abort_stats abts_stats;
struct terminate_stats term_stats;
struct reset_stats reset_stats;
struct fw_stats fw_stats;
struct vlan_stats vlan_stats;
struct fc_host_statistics host_stats;
struct misc_stats misc_stats;
};
struct stats_debug_info {
char *debug_buffer;
void *i_private;
int buf_size;
int buffer_len;
};
int fnic_get_stats_data(struct stats_debug_info *, struct fnic_stats *);
const char *fnic_role_to_str(unsigned int role);
#endif /* _FNIC_STATS_H_ */
linux-7.2.3/drivers/scsi/fnic/fnic_trace.c
+883
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@@ -0,0 +1,883 @@
// SPDX-License-Identifier: GPL-2.0-only
// Copyright 2012 Cisco Systems, Inc. All rights reserved.
#include <linux/module.h>
#include <linux/mempool.h>
#include <linux/errno.h>
#include <linux/spinlock.h>
#include <linux/kallsyms.h>
#include <linux/time.h>
#include <linux/vmalloc.h>
#include <scsi/scsi_transport_fc.h>
#include "fnic_io.h"
#include "fnic.h"
unsigned int trace_max_pages;
static int fnic_max_trace_entries;
static unsigned long fnic_trace_buf_p;
static DEFINE_SPINLOCK(fnic_trace_lock);
static fnic_trace_dbg_t fnic_trace_entries;
int fnic_tracing_enabled = 1;
/* static char *fnic_fc_ctlr_trace_buf_p; */
static int fc_trace_max_entries;
static unsigned long fnic_fc_ctlr_trace_buf_p;
static fnic_trace_dbg_t fc_trace_entries;
int fnic_fc_tracing_enabled = 1;
int fnic_fc_trace_cleared = 1;
static DEFINE_SPINLOCK(fnic_fc_trace_lock);
static const char * const fnic_role_str[] = {
[FNIC_ROLE_FCP_INITIATOR] = "FCP_Initiator",
};
const char *fnic_role_to_str(unsigned int role)
{
if (role >= ARRAY_SIZE(fnic_role_str) || !fnic_role_str[role])
return "Unknown";
return fnic_role_str[role];
}
/*
* fnic_trace_get_buf - Give buffer pointer to user to fill up trace information
*
* Description:
* This routine gets next available trace buffer entry location @wr_idx
* from allocated trace buffer pages and give that memory location
* to user to store the trace information.
*
* Return Value:
* This routine returns pointer to next available trace entry
* @fnic_buf_head for user to fill trace information.
*/
fnic_trace_data_t *fnic_trace_get_buf(void)
{
unsigned long fnic_buf_head;
unsigned long flags;
spin_lock_irqsave(&fnic_trace_lock, flags);
/*
* Get next available memory location for writing trace information
* at @wr_idx and increment @wr_idx
*/
fnic_buf_head =
fnic_trace_entries.page_offset[fnic_trace_entries.wr_idx];
fnic_trace_entries.wr_idx++;
/*
* Verify if trace buffer is full then change wd_idx to
* start from zero
*/
if (fnic_trace_entries.wr_idx >= fnic_max_trace_entries)
fnic_trace_entries.wr_idx = 0;
/*
* Verify if write index @wr_idx and read index @rd_idx are same then
* increment @rd_idx to move to next entry in trace buffer
*/
if (fnic_trace_entries.wr_idx == fnic_trace_entries.rd_idx) {
fnic_trace_entries.rd_idx++;
if (fnic_trace_entries.rd_idx >= fnic_max_trace_entries)
fnic_trace_entries.rd_idx = 0;
}
spin_unlock_irqrestore(&fnic_trace_lock, flags);
return (fnic_trace_data_t *)fnic_buf_head;
}
/*
* fnic_get_trace_data - Copy trace buffer to a memory file
* @fnic_dbgfs_t: pointer to debugfs trace buffer
*
* Description:
* This routine gathers the fnic trace debugfs data from the fnic_trace_data_t
* buffer and dumps it to fnic_dbgfs_t. It will start at the rd_idx entry in
* the log and process the log until the end of the buffer. Then it will gather
* from the beginning of the log and process until the current entry @wr_idx.
*
* Return Value:
* This routine returns the amount of bytes that were dumped into fnic_dbgfs_t
*/
int fnic_get_trace_data(fnic_dbgfs_t *fnic_dbgfs_prt)
{
int rd_idx;
int wr_idx;
int len = 0;
unsigned long flags;
char str[KSYM_SYMBOL_LEN];
struct timespec64 val;
fnic_trace_data_t *tbp;
spin_lock_irqsave(&fnic_trace_lock, flags);
rd_idx = fnic_trace_entries.rd_idx;
wr_idx = fnic_trace_entries.wr_idx;
if (wr_idx < rd_idx) {
while (1) {
/* Start from read index @rd_idx */
tbp = (fnic_trace_data_t *)
fnic_trace_entries.page_offset[rd_idx];
if (!tbp) {
spin_unlock_irqrestore(&fnic_trace_lock, flags);
return 0;
}
/* Convert function pointer to function name */
if (sizeof(unsigned long) < 8) {
sprint_symbol(str, tbp->fnaddr.low);
jiffies_to_timespec64(tbp->timestamp.low, &val);
} else {
sprint_symbol(str, tbp->fnaddr.val);
jiffies_to_timespec64(tbp->timestamp.val, &val);
}
/*
* Dump trace buffer entry to memory file
* and increment read index @rd_idx
*/
len += scnprintf(fnic_dbgfs_prt->buffer + len,
(trace_max_pages * PAGE_SIZE * 3) - len,
"%ptSp %-50s %8x %8x %16llx %16llx %16llx %16llx %16llx\n",
&val, str, tbp->host_no, tbp->tag,
tbp->data[0], tbp->data[1], tbp->data[2],
tbp->data[3], tbp->data[4]);
rd_idx++;
/*
* If rd_idx is reached to maximum trace entries
* then move rd_idx to zero
*/
if (rd_idx > (fnic_max_trace_entries-1))
rd_idx = 0;
/*
* Continue dumping trace buffer entries into
* memory file till rd_idx reaches write index
*/
if (rd_idx == wr_idx)
break;
}
} else if (wr_idx > rd_idx) {
while (1) {
/* Start from read index @rd_idx */
tbp = (fnic_trace_data_t *)
fnic_trace_entries.page_offset[rd_idx];
if (!tbp) {
spin_unlock_irqrestore(&fnic_trace_lock, flags);
return 0;
}
/* Convert function pointer to function name */
if (sizeof(unsigned long) < 8) {
sprint_symbol(str, tbp->fnaddr.low);
jiffies_to_timespec64(tbp->timestamp.low, &val);
} else {
sprint_symbol(str, tbp->fnaddr.val);
jiffies_to_timespec64(tbp->timestamp.val, &val);
}
/*
* Dump trace buffer entry to memory file
* and increment read index @rd_idx
*/
len += scnprintf(fnic_dbgfs_prt->buffer + len,
(trace_max_pages * PAGE_SIZE * 3) - len,
"%ptSp %-50s %8x %8x %16llx %16llx %16llx %16llx %16llx\n",
&val, str, tbp->host_no, tbp->tag,
tbp->data[0], tbp->data[1], tbp->data[2],
tbp->data[3], tbp->data[4]);
rd_idx++;
/*
* Continue dumping trace buffer entries into
* memory file till rd_idx reaches write index
*/
if (rd_idx == wr_idx)
break;
}
}
spin_unlock_irqrestore(&fnic_trace_lock, flags);
return len;
}
/*
* fnic_get_stats_data - Copy fnic stats buffer to a memory file
* @fnic_dbgfs_t: pointer to debugfs fnic stats buffer
*
* Description:
* This routine gathers the fnic stats debugfs data from the fnic_stats struct
* and dumps it to stats_debug_info.
*
* Return Value:
* This routine returns the amount of bytes that were dumped into
* stats_debug_info
*/
int fnic_get_stats_data(struct stats_debug_info *debug,
struct fnic_stats *stats)
{
int len = 0;
int buf_size = debug->buf_size;
struct timespec64 val, val1, val2;
int i = 0;
ktime_get_real_ts64(&val);
len = scnprintf(debug->debug_buffer + len, buf_size - len,
"------------------------------------------\n"
"\t\tTime\n"
"------------------------------------------\n");
val1 = timespec64_sub(val, stats->stats_timestamps.last_reset_time);
val2 = timespec64_sub(val, stats->stats_timestamps.last_read_time);
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Current time : [%ptSp]\n"
"Last stats reset time: [%ptSp]\n"
"Last stats read time: [%ptSp]\n"
"delta since last reset: [%ptSp]\n"
"delta since last read: [%ptSp]\n",
&val,
&stats->stats_timestamps.last_reset_time,
&stats->stats_timestamps.last_read_time,
&val1, &val2);
stats->stats_timestamps.last_read_time = val;
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"------------------------------------------\n"
"\t\tIO Statistics\n"
"------------------------------------------\n");
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Number of Active IOs: %lld\nMaximum Active IOs: %lld\n"
"Number of IOs: %lld\nNumber of IO Completions: %lld\n"
"Number of IO Failures: %lld\nNumber of IO NOT Found: %lld\n"
"Number of Memory alloc Failures: %lld\n"
"Number of IOREQ Null: %lld\n"
"Number of SCSI cmd pointer Null: %lld\n"
"\nIO completion times: \n"
" < 10 ms : %lld\n"
" 10 ms - 100 ms : %lld\n"
" 100 ms - 500 ms : %lld\n"
" 500 ms - 5 sec: %lld\n"
" 5 sec - 10 sec: %lld\n"
" 10 sec - 30 sec: %lld\n"
" > 30 sec: %lld\n",
(u64)atomic64_read(&stats->io_stats.active_ios),
(u64)atomic64_read(&stats->io_stats.max_active_ios),
(u64)atomic64_read(&stats->io_stats.num_ios),
(u64)atomic64_read(&stats->io_stats.io_completions),
(u64)atomic64_read(&stats->io_stats.io_failures),
(u64)atomic64_read(&stats->io_stats.io_not_found),
(u64)atomic64_read(&stats->io_stats.alloc_failures),
(u64)atomic64_read(&stats->io_stats.ioreq_null),
(u64)atomic64_read(&stats->io_stats.sc_null),
(u64)atomic64_read(&stats->io_stats.io_btw_0_to_10_msec),
(u64)atomic64_read(&stats->io_stats.io_btw_10_to_100_msec),
(u64)atomic64_read(&stats->io_stats.io_btw_100_to_500_msec),
(u64)atomic64_read(&stats->io_stats.io_btw_500_to_5000_msec),
(u64)atomic64_read(&stats->io_stats.io_btw_5000_to_10000_msec),
(u64)atomic64_read(&stats->io_stats.io_btw_10000_to_30000_msec),
(u64)atomic64_read(&stats->io_stats.io_greater_than_30000_msec));
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"------------------------------------------\n"
"\t\tIO Queues and cumulative IOs\n"
"------------------------------------------\n");
for (i = 0; i < FNIC_MQ_MAX_QUEUES; i++) {
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Q:%d -> %lld\n", i, (u64)atomic64_read(&stats->io_stats.ios[i]));
}
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"\nCurrent Max IO time : %lld\n",
(u64)atomic64_read(&stats->io_stats.current_max_io_time));
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tAbort Statistics\n"
"------------------------------------------\n");
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Number of Aborts: %lld\n"
"Number of Abort Failures: %lld\n"
"Number of Abort Driver Timeouts: %lld\n"
"Number of Abort FW Timeouts: %lld\n"
"Number of Abort IO NOT Found: %lld\n"
"Abort issued times: \n"
" < 6 sec : %lld\n"
" 6 sec - 20 sec : %lld\n"
" 20 sec - 30 sec : %lld\n"
" 30 sec - 40 sec : %lld\n"
" 40 sec - 50 sec : %lld\n"
" 50 sec - 60 sec : %lld\n"
" > 60 sec: %lld\n",
(u64)atomic64_read(&stats->abts_stats.aborts),
(u64)atomic64_read(&stats->abts_stats.abort_failures),
(u64)atomic64_read(&stats->abts_stats.abort_drv_timeouts),
(u64)atomic64_read(&stats->abts_stats.abort_fw_timeouts),
(u64)atomic64_read(&stats->abts_stats.abort_io_not_found),
(u64)atomic64_read(&stats->abts_stats.abort_issued_btw_0_to_6_sec),
(u64)atomic64_read(&stats->abts_stats.abort_issued_btw_6_to_20_sec),
(u64)atomic64_read(&stats->abts_stats.abort_issued_btw_20_to_30_sec),
(u64)atomic64_read(&stats->abts_stats.abort_issued_btw_30_to_40_sec),
(u64)atomic64_read(&stats->abts_stats.abort_issued_btw_40_to_50_sec),
(u64)atomic64_read(&stats->abts_stats.abort_issued_btw_50_to_60_sec),
(u64)atomic64_read(&stats->abts_stats.abort_issued_greater_than_60_sec));
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tTerminate Statistics\n"
"------------------------------------------\n");
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Number of Terminates: %lld\n"
"Maximum Terminates: %lld\n"
"Number of Terminate Driver Timeouts: %lld\n"
"Number of Terminate FW Timeouts: %lld\n"
"Number of Terminate IO NOT Found: %lld\n"
"Number of Terminate Failures: %lld\n",
(u64)atomic64_read(&stats->term_stats.terminates),
(u64)atomic64_read(&stats->term_stats.max_terminates),
(u64)atomic64_read(&stats->term_stats.terminate_drv_timeouts),
(u64)atomic64_read(&stats->term_stats.terminate_fw_timeouts),
(u64)atomic64_read(&stats->term_stats.terminate_io_not_found),
(u64)atomic64_read(&stats->term_stats.terminate_failures));
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tReset Statistics\n"
"------------------------------------------\n");
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Number of Device Resets: %lld\n"
"Number of Device Reset Failures: %lld\n"
"Number of Device Reset Aborts: %lld\n"
"Number of Device Reset Timeouts: %lld\n"
"Number of Device Reset Terminates: %lld\n"
"Number of FW Resets: %lld\n"
"Number of FW Reset Completions: %lld\n"
"Number of FW Reset Failures: %lld\n"
"Number of Fnic Reset: %lld\n"
"Number of Fnic Reset Completions: %lld\n"
"Number of Fnic Reset Failures: %lld\n",
(u64)atomic64_read(&stats->reset_stats.device_resets),
(u64)atomic64_read(&stats->reset_stats.device_reset_failures),
(u64)atomic64_read(&stats->reset_stats.device_reset_aborts),
(u64)atomic64_read(&stats->reset_stats.device_reset_timeouts),
(u64)atomic64_read(
&stats->reset_stats.device_reset_terminates),
(u64)atomic64_read(&stats->reset_stats.fw_resets),
(u64)atomic64_read(&stats->reset_stats.fw_reset_completions),
(u64)atomic64_read(&stats->reset_stats.fw_reset_failures),
(u64)atomic64_read(&stats->reset_stats.fnic_resets),
(u64)atomic64_read(
&stats->reset_stats.fnic_reset_completions),
(u64)atomic64_read(&stats->reset_stats.fnic_reset_failures));
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tFirmware Statistics\n"
"------------------------------------------\n");
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Number of Active FW Requests %lld\n"
"Maximum FW Requests: %lld\n"
"Number of FW out of resources: %lld\n"
"Number of FW IO errors: %lld\n",
(u64)atomic64_read(&stats->fw_stats.active_fw_reqs),
(u64)atomic64_read(&stats->fw_stats.max_fw_reqs),
(u64)atomic64_read(&stats->fw_stats.fw_out_of_resources),
(u64)atomic64_read(&stats->fw_stats.io_fw_errs));
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tVlan Discovery Statistics\n"
"------------------------------------------\n");
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Number of Vlan Discovery Requests Sent %lld\n"
"Vlan Response Received with no FCF VLAN ID: %lld\n"
"No solicitations recvd after vlan set, expiry count: %lld\n"
"Flogi rejects count: %lld\n",
(u64)atomic64_read(&stats->vlan_stats.vlan_disc_reqs),
(u64)atomic64_read(&stats->vlan_stats.resp_withno_vlanID),
(u64)atomic64_read(&stats->vlan_stats.sol_expiry_count),
(u64)atomic64_read(&stats->vlan_stats.flogi_rejects));
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"\n------------------------------------------\n"
"\t\tOther Important Statistics\n"
"------------------------------------------\n");
jiffies_to_timespec64(stats->misc_stats.last_isr_time, &val1);
jiffies_to_timespec64(stats->misc_stats.last_ack_time, &val2);
len += scnprintf(debug->debug_buffer + len, buf_size - len,
"Last ISR time: %llu (%ptSp)\n"
"Last ACK time: %llu (%ptSp)\n"
"Max ISR jiffies: %llu\n"
"Max ISR time (ms) (0 denotes < 1 ms): %llu\n"
"Corr. work done: %llu\n"
"Number of ISRs: %lld\n"
"Maximum CQ Entries: %lld\n"
"Number of ACK index out of range: %lld\n"
"Number of data count mismatch: %lld\n"
"Number of FCPIO Timeouts: %lld\n"
"Number of FCPIO Aborted: %lld\n"
"Number of SGL Invalid: %lld\n"
"Number of Copy WQ Alloc Failures for ABTs: %lld\n"
"Number of Copy WQ Alloc Failures for Device Reset: %lld\n"
"Number of Copy WQ Alloc Failures for IOs: %lld\n"
"Number of no icmnd itmf Completions: %lld\n"
"Number of Check Conditions encountered: %lld\n"
"Number of QUEUE Fulls: %lld\n"
"Number of rport not ready: %lld\n"
"Number of receive frame errors: %lld\n"
"Port speed (in Mbps): %lld\n",
(u64)stats->misc_stats.last_isr_time, &val1,
(u64)stats->misc_stats.last_ack_time, &val2,
(u64)atomic64_read(&stats->misc_stats.max_isr_jiffies),
(u64)atomic64_read(&stats->misc_stats.max_isr_time_ms),
(u64)atomic64_read(&stats->misc_stats.corr_work_done),
(u64)atomic64_read(&stats->misc_stats.isr_count),
(u64)atomic64_read(&stats->misc_stats.max_cq_entries),
(u64)atomic64_read(&stats->misc_stats.ack_index_out_of_range),
(u64)atomic64_read(&stats->misc_stats.data_count_mismatch),
(u64)atomic64_read(&stats->misc_stats.fcpio_timeout),
(u64)atomic64_read(&stats->misc_stats.fcpio_aborted),
(u64)atomic64_read(&stats->misc_stats.sgl_invalid),
(u64)atomic64_read(
&stats->misc_stats.abts_cpwq_alloc_failures),
(u64)atomic64_read(
&stats->misc_stats.devrst_cpwq_alloc_failures),
(u64)atomic64_read(&stats->misc_stats.io_cpwq_alloc_failures),
(u64)atomic64_read(&stats->misc_stats.no_icmnd_itmf_cmpls),
(u64)atomic64_read(&stats->misc_stats.check_condition),
(u64)atomic64_read(&stats->misc_stats.queue_fulls),
(u64)atomic64_read(&stats->misc_stats.tport_not_ready),
(u64)atomic64_read(&stats->misc_stats.frame_errors),
(u64)atomic64_read(&stats->misc_stats.port_speed_in_mbps));
return len;
}
int fnic_get_debug_info(struct stats_debug_info *info, struct fnic *fnic)
{
struct fnic_iport_s *iport = &fnic->iport;
int buf_size = info->buf_size;
int len = info->buffer_len;
struct fnic_tport_s *tport, *next;
unsigned long flags;
len += snprintf(info->debug_buffer + len, buf_size - len,
"------------------------------------------\n"
"\t\t Debug Info\n"
"------------------------------------------\n");
len += snprintf(info->debug_buffer + len, buf_size - len,
"fnic Name:%s number:%d Role:%s State:%s\n",
fnic->name, fnic->fnic_num,
fnic_role_to_str(fnic->role),
fnic_state_to_str(fnic->state));
len +=
snprintf(info->debug_buffer + len, buf_size - len,
"iport State:%d Flags:0x%x vlan_id:%d fcid:0x%x\n",
iport->state, iport->flags, iport->vlan_id, iport->fcid);
len +=
snprintf(info->debug_buffer + len, buf_size - len,
"usefip:%d fip_state:%d fip_flogi_retry:%d\n",
iport->usefip, iport->fip.state, iport->fip.flogi_retry);
len +=
snprintf(info->debug_buffer + len, buf_size - len,
"fpma %02x:%02x:%02x:%02x:%02x:%02x",
iport->fpma[5], iport->fpma[4], iport->fpma[3],
iport->fpma[2], iport->fpma[1], iport->fpma[0]);
len +=
snprintf(info->debug_buffer + len, buf_size - len,
"fcfmac %02x:%02x:%02x:%02x:%02x:%02x\n",
iport->fcfmac[5], iport->fcfmac[4], iport->fcfmac[3],
iport->fcfmac[2], iport->fcfmac[1], iport->fcfmac[0]);
len +=
snprintf(info->debug_buffer + len, buf_size - len,
"fabric state:%d flags:0x%x retry_counter:%d e_d_tov:%d r_a_tov:%d\n",
iport->fabric.state, iport->fabric.flags,
iport->fabric.retry_counter, iport->e_d_tov,
iport->r_a_tov);
spin_lock_irqsave(&fnic->fnic_lock, flags);
list_for_each_entry_safe(tport, next, &iport->tport_list, links) {
len += snprintf(info->debug_buffer + len, buf_size - len,
"tport fcid:0x%x state:%d flags:0x%x inflight:%d retry_counter:%d\n",
tport->fcid, tport->state, tport->flags,
atomic_read(&tport->in_flight),
tport->retry_counter);
}
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
return len;
}
/*
* fnic_trace_buf_init - Initialize fnic trace buffer logging facility
*
* Description:
* Initialize trace buffer data structure by allocating required memory and
* setting page_offset information for every trace entry by adding trace entry
* length to previous page_offset value.
*/
int fnic_trace_buf_init(void)
{
unsigned long fnic_buf_head;
int i;
int err = 0;
trace_max_pages = fnic_trace_max_pages;
fnic_max_trace_entries = (trace_max_pages * PAGE_SIZE)/
FNIC_ENTRY_SIZE_BYTES;
fnic_trace_buf_p = (unsigned long)vcalloc(trace_max_pages, PAGE_SIZE);
if (!fnic_trace_buf_p) {
printk(KERN_ERR PFX "Failed to allocate memory "
"for fnic_trace_buf_p\n");
err = -ENOMEM;
goto err_fnic_trace_buf_init;
}
fnic_trace_entries.page_offset =
vcalloc(fnic_max_trace_entries, sizeof(unsigned long));
if (!fnic_trace_entries.page_offset) {
printk(KERN_ERR PFX "Failed to allocate memory for"
" page_offset\n");
if (fnic_trace_buf_p) {
vfree((void *)fnic_trace_buf_p);
fnic_trace_buf_p = 0;
}
err = -ENOMEM;
goto err_fnic_trace_buf_init;
}
fnic_trace_entries.wr_idx = fnic_trace_entries.rd_idx = 0;
fnic_buf_head = fnic_trace_buf_p;
/*
* Set page_offset field of fnic_trace_entries struct by
* calculating memory location for every trace entry using
* length of each trace entry
*/
for (i = 0; i < fnic_max_trace_entries; i++) {
fnic_trace_entries.page_offset[i] = fnic_buf_head;
fnic_buf_head += FNIC_ENTRY_SIZE_BYTES;
}
fnic_trace_debugfs_init();
pr_info("fnic: Successfully Initialized Trace Buffer\n");
return err;
err_fnic_trace_buf_init:
return err;
}
/*
* fnic_trace_free - Free memory of fnic trace data structures.
*/
void fnic_trace_free(void)
{
fnic_tracing_enabled = 0;
fnic_trace_debugfs_terminate();
if (fnic_trace_entries.page_offset) {
vfree((void *)fnic_trace_entries.page_offset);
fnic_trace_entries.page_offset = NULL;
}
if (fnic_trace_buf_p) {
vfree((void *)fnic_trace_buf_p);
fnic_trace_buf_p = 0;
}
printk(KERN_INFO PFX "Successfully Freed Trace Buffer\n");
}
/*
* fnic_fc_ctlr_trace_buf_init -
* Initialize trace buffer to log fnic control frames
* Description:
* Initialize trace buffer data structure by allocating
* required memory for trace data as well as for Indexes.
* Frame size is 256 bytes and
* memory is allocated for 1024 entries of 256 bytes.
* Page_offset(Index) is set to the address of trace entry
* and page_offset is initialized by adding frame size
* to the previous page_offset entry.
*/
int fnic_fc_trace_init(void)
{
unsigned long fc_trace_buf_head;
int err = 0;
int i;
fc_trace_max_entries = (fnic_fc_trace_max_pages * PAGE_SIZE)/
FC_TRC_SIZE_BYTES;
fnic_fc_ctlr_trace_buf_p =
(unsigned long)vcalloc(fnic_fc_trace_max_pages, PAGE_SIZE);
if (!fnic_fc_ctlr_trace_buf_p) {
pr_err("fnic: Failed to allocate memory for "
"FC Control Trace Buf\n");
err = -ENOMEM;
goto err_fnic_fc_ctlr_trace_buf_init;
}
/* Allocate memory for page offset */
fc_trace_entries.page_offset =
vcalloc(fc_trace_max_entries, sizeof(unsigned long));
if (!fc_trace_entries.page_offset) {
pr_err("fnic:Failed to allocate memory for page_offset\n");
if (fnic_fc_ctlr_trace_buf_p) {
pr_err("fnic: Freeing FC Control Trace Buf\n");
vfree((void *)fnic_fc_ctlr_trace_buf_p);
fnic_fc_ctlr_trace_buf_p = 0;
}
err = -ENOMEM;
goto err_fnic_fc_ctlr_trace_buf_init;
}
fc_trace_entries.rd_idx = fc_trace_entries.wr_idx = 0;
fc_trace_buf_head = fnic_fc_ctlr_trace_buf_p;
/*
* Set up fc_trace_entries.page_offset field with memory location
* for every trace entry
*/
for (i = 0; i < fc_trace_max_entries; i++) {
fc_trace_entries.page_offset[i] = fc_trace_buf_head;
fc_trace_buf_head += FC_TRC_SIZE_BYTES;
}
fnic_fc_trace_debugfs_init();
pr_info("fnic: Successfully Initialized FC_CTLR Trace Buffer\n");
return err;
err_fnic_fc_ctlr_trace_buf_init:
return err;
}
/*
* Fnic_fc_ctlr_trace_free - Free memory of fnic_fc_ctlr trace data structures.
*/
void fnic_fc_trace_free(void)
{
fnic_fc_tracing_enabled = 0;
fnic_fc_trace_debugfs_terminate();
if (fc_trace_entries.page_offset) {
vfree((void *)fc_trace_entries.page_offset);
fc_trace_entries.page_offset = NULL;
}
if (fnic_fc_ctlr_trace_buf_p) {
vfree((void *)fnic_fc_ctlr_trace_buf_p);
fnic_fc_ctlr_trace_buf_p = 0;
}
pr_info("fnic:Successfully FC_CTLR Freed Trace Buffer\n");
}
/*
* fnic_fc_ctlr_set_trace_data:
* Maintain rd & wr idx accordingly and set data
* Passed parameters:
* host_no: host number associated with fnic
* frame_type: send_frame, rece_frame or link event
* fc_frame: pointer to fc_frame
* frame_len: Length of the fc_frame
* Description:
* This routine will get next available wr_idx and
* copy all passed trace data to the buffer pointed by wr_idx
* and increment wr_idx. It will also make sure that we dont
* overwrite the entry which we are reading and also
* wrap around if we reach the maximum entries.
* Returned Value:
* It will return 0 for success or -1 for failure
*/
int fnic_fc_trace_set_data(u32 host_no, u8 frame_type,
char *frame, u32 fc_trc_frame_len)
{
unsigned long flags;
struct fc_trace_hdr *fc_buf;
unsigned long eth_fcoe_hdr_len;
char *fc_trace;
if (fnic_fc_tracing_enabled == 0)
return 0;
spin_lock_irqsave(&fnic_fc_trace_lock, flags);
if (fnic_fc_trace_cleared == 1) {
fc_trace_entries.rd_idx = fc_trace_entries.wr_idx = 0;
pr_info("fnic: Resetting the read idx\n");
memset((void *)fnic_fc_ctlr_trace_buf_p, 0,
fnic_fc_trace_max_pages * PAGE_SIZE);
fnic_fc_trace_cleared = 0;
}
fc_buf = (struct fc_trace_hdr *)
fc_trace_entries.page_offset[fc_trace_entries.wr_idx];
fc_trace_entries.wr_idx++;
if (fc_trace_entries.wr_idx >= fc_trace_max_entries)
fc_trace_entries.wr_idx = 0;
if (fc_trace_entries.wr_idx == fc_trace_entries.rd_idx) {
fc_trace_entries.rd_idx++;
if (fc_trace_entries.rd_idx >= fc_trace_max_entries)
fc_trace_entries.rd_idx = 0;
}
ktime_get_real_ts64(&fc_buf->time_stamp);
fc_buf->host_no = host_no;
fc_buf->frame_type = frame_type;
fc_trace = (char *)FC_TRACE_ADDRESS(fc_buf);
/* During the receive path, we do not have eth hdr as well as fcoe hdr
* at trace entry point so we will stuff 0xff just to make it generic.
*/
if (frame_type == FNIC_FC_RECV) {
eth_fcoe_hdr_len = sizeof(struct ethhdr) +
sizeof(struct fcoe_hdr);
memset((char *)fc_trace, 0xff, eth_fcoe_hdr_len);
/* Copy the rest of data frame */
memcpy((char *)(fc_trace + eth_fcoe_hdr_len), (void *)frame,
min_t(u8, fc_trc_frame_len,
(u8)(FC_TRC_SIZE_BYTES - FC_TRC_HEADER_SIZE
- eth_fcoe_hdr_len)));
} else {
memcpy((char *)fc_trace, (void *)frame,
min_t(u8, fc_trc_frame_len,
(u8)(FC_TRC_SIZE_BYTES - FC_TRC_HEADER_SIZE)));
}
/* Store the actual received length */
fc_buf->frame_len = fc_trc_frame_len;
spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
return 0;
}
/*
* fnic_fc_ctlr_get_trace_data: Copy trace buffer to a memory file
* Passed parameter:
* @fnic_dbgfs_t: pointer to debugfs trace buffer
* rdata_flag: 1 => Unformatted file
* 0 => formatted file
* Description:
* This routine will copy the trace data to memory file with
* proper formatting and also copy to another memory
* file without formatting for further processing.
* Return Value:
* Number of bytes that were dumped into fnic_dbgfs_t
*/
int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag)
{
int rd_idx, wr_idx;
unsigned long flags;
int len = 0, j;
struct fc_trace_hdr *tdata;
char *fc_trace;
spin_lock_irqsave(&fnic_fc_trace_lock, flags);
if (fc_trace_entries.wr_idx == fc_trace_entries.rd_idx) {
spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
pr_info("fnic: Buffer is empty\n");
return 0;
}
rd_idx = fc_trace_entries.rd_idx;
wr_idx = fc_trace_entries.wr_idx;
if (rdata_flag == 0) {
len += scnprintf(fnic_dbgfs_prt->buffer + len,
(fnic_fc_trace_max_pages * PAGE_SIZE * 3) - len,
"Time Stamp (UTC)\t\t"
"Host No: F Type: len: FCoE_FRAME:\n");
}
while (rd_idx != wr_idx) {
tdata = (struct fc_trace_hdr *)
fc_trace_entries.page_offset[rd_idx];
if (!tdata) {
pr_info("fnic: Rd data is NULL\n");
spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
return 0;
}
if (rdata_flag == 0) {
copy_and_format_trace_data(tdata,
fnic_dbgfs_prt, &len, rdata_flag);
} else {
fc_trace = (char *)tdata;
for (j = 0; j < FC_TRC_SIZE_BYTES; j++) {
len += scnprintf(fnic_dbgfs_prt->buffer + len,
(fnic_fc_trace_max_pages * PAGE_SIZE * 3)
- len, "%02x", fc_trace[j] & 0xff);
} /* for loop */
len += scnprintf(fnic_dbgfs_prt->buffer + len,
(fnic_fc_trace_max_pages * PAGE_SIZE * 3) - len,
"\n");
}
rd_idx++;
if (rd_idx > (fc_trace_max_entries - 1))
rd_idx = 0;
}
spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
return len;
}
/*
* copy_and_format_trace_data: Copy formatted data to char * buffer
* Passed Parameter:
* @fc_trace_hdr_t: pointer to trace data
* @fnic_dbgfs_t: pointer to debugfs trace buffer
* @orig_len: pointer to len
* rdata_flag: 0 => Formatted file, 1 => Unformatted file
* Description:
* This routine will format and copy the passed trace data
* for formatted file or unformatted file accordingly.
*/
void copy_and_format_trace_data(struct fc_trace_hdr *tdata,
fnic_dbgfs_t *fnic_dbgfs_prt, int *orig_len,
u8 rdata_flag)
{
int j, i = 1, len;
int ethhdr_len = sizeof(struct ethhdr) - 1;
int fcoehdr_len = sizeof(struct fcoe_hdr);
int fchdr_len = sizeof(struct fc_frame_header);
int max_size = fnic_fc_trace_max_pages * PAGE_SIZE * 3;
char *fc_trace;
tdata->frame_type = tdata->frame_type & 0x7F;
len = *orig_len;
len += scnprintf(fnic_dbgfs_prt->buffer + len, max_size - len,
"%ptSs ns%8x %c%8x\t",
&tdata->time_stamp,
tdata->host_no, tdata->frame_type, tdata->frame_len);
fc_trace = (char *)FC_TRACE_ADDRESS(tdata);
for (j = 0; j < min_t(u8, tdata->frame_len,
(u8)(FC_TRC_SIZE_BYTES - FC_TRC_HEADER_SIZE)); j++) {
if (tdata->frame_type == FNIC_FC_LE) {
len += scnprintf(fnic_dbgfs_prt->buffer + len,
max_size - len, "%c", fc_trace[j]);
} else {
len += scnprintf(fnic_dbgfs_prt->buffer + len,
max_size - len, "%02x", fc_trace[j] & 0xff);
len += scnprintf(fnic_dbgfs_prt->buffer + len,
max_size - len, " ");
if (j == ethhdr_len ||
j == ethhdr_len + fcoehdr_len ||
j == ethhdr_len + fcoehdr_len + fchdr_len ||
(i > 3 && j%fchdr_len == 0)) {
len += scnprintf(fnic_dbgfs_prt->buffer
+ len, max_size - len,
"\n\t\t\t\t\t\t\t\t");
i++;
}
} /* end of else*/
} /* End of for loop*/
len += scnprintf(fnic_dbgfs_prt->buffer + len,
max_size - len, "\n");
*orig_len = len;
}
linux-7.2.3/drivers/scsi/fnic/fnic_trace.h
+115
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@@ -0,0 +1,115 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright 2012 Cisco Systems, Inc. All rights reserved. */
#ifndef __FNIC_TRACE_H__
#define __FNIC_TRACE_H__
#define FNIC_ENTRY_SIZE_BYTES 64
#define FC_TRC_SIZE_BYTES 256
#define FC_TRC_HEADER_SIZE sizeof(struct fc_trace_hdr)
/*
* Fisrt bit of FNIC_FC_RECV and FNIC_FC_SEND is used to represent the type
* of frame 1 => Eth frame, 0=> FC frame
*/
#define FNIC_FC_RECV 0x52 /* Character R */
#define FNIC_FC_SEND 0x54 /* Character T */
#define FNIC_FC_LE 0x4C /* Character L */
extern ssize_t simple_read_from_buffer(void __user *to,
size_t count,
loff_t *ppos,
const void *from,
size_t available);
extern unsigned int fnic_trace_max_pages;
extern int fnic_tracing_enabled;
extern unsigned int trace_max_pages;
extern unsigned int fnic_fc_trace_max_pages;
extern int fnic_fc_tracing_enabled;
extern int fnic_fc_trace_cleared;
typedef struct fnic_trace_dbg {
int wr_idx;
int rd_idx;
unsigned long *page_offset;
} fnic_trace_dbg_t;
typedef struct fnic_dbgfs {
int buffer_len;
char *buffer;
} fnic_dbgfs_t;
struct fnic_trace_data {
union {
struct {
u32 low;
u32 high;
};
u64 val;
} timestamp, fnaddr;
u32 host_no;
u32 tag;
u64 data[5];
} __attribute__((__packed__));
typedef struct fnic_trace_data fnic_trace_data_t;
struct fc_trace_hdr {
struct timespec64 time_stamp;
u32 host_no;
u8 frame_type;
u8 frame_len;
} __attribute__((__packed__));
#define FC_TRACE_ADDRESS(a) \
((unsigned long)(a) + sizeof(struct fc_trace_hdr))
#define FNIC_TRACE_ENTRY_SIZE \
(FNIC_ENTRY_SIZE_BYTES - sizeof(fnic_trace_data_t))
#define FNIC_TRACE(_fn, _hn, _t, _a, _b, _c, _d, _e) \
if (unlikely(fnic_tracing_enabled)) { \
fnic_trace_data_t *trace_buf = fnic_trace_get_buf(); \
if (trace_buf) { \
if (sizeof(unsigned long) < 8) { \
trace_buf->timestamp.low = jiffies; \
trace_buf->fnaddr.low = (u32)(unsigned long)_fn; \
} else { \
trace_buf->timestamp.val = jiffies; \
trace_buf->fnaddr.val = (u64)(unsigned long)_fn; \
} \
trace_buf->host_no = _hn; \
trace_buf->tag = _t; \
trace_buf->data[0] = (u64)(unsigned long)_a; \
trace_buf->data[1] = (u64)(unsigned long)_b; \
trace_buf->data[2] = (u64)(unsigned long)_c; \
trace_buf->data[3] = (u64)(unsigned long)_d; \
trace_buf->data[4] = (u64)(unsigned long)_e; \
} \
}
fnic_trace_data_t *fnic_trace_get_buf(void);
int fnic_get_trace_data(fnic_dbgfs_t *);
int fnic_trace_buf_init(void);
void fnic_trace_free(void);
int fnic_debugfs_init(void);
void fnic_debugfs_terminate(void);
void fnic_trace_debugfs_init(void);
void fnic_trace_debugfs_terminate(void);
/* Fnic FC CTLR Trace releated function */
int fnic_fc_trace_init(void);
void fnic_fc_trace_free(void);
int fnic_fc_trace_set_data(u32 host_no, u8 frame_type,
char *frame, u32 fc_frame_len);
int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag);
void copy_and_format_trace_data(struct fc_trace_hdr *tdata,
fnic_dbgfs_t *fnic_dbgfs_prt,
int *len, u8 rdata_flag);
void fnic_fc_trace_debugfs_init(void);
void fnic_fc_trace_debugfs_terminate(void);
#endif
linux-7.2.3/drivers/scsi/fnic/rq_enet_desc.h
+46
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@@ -0,0 +1,46 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _RQ_ENET_DESC_H_
#define _RQ_ENET_DESC_H_
/* Ethernet receive queue descriptor: 16B */
struct rq_enet_desc {
__le64 address;
__le16 length_type;
u8 reserved[6];
};
enum rq_enet_type_types {
RQ_ENET_TYPE_ONLY_SOP = 0,
RQ_ENET_TYPE_NOT_SOP = 1,
RQ_ENET_TYPE_RESV2 = 2,
RQ_ENET_TYPE_RESV3 = 3,
};
#define RQ_ENET_ADDR_BITS 64
#define RQ_ENET_LEN_BITS 14
#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
#define RQ_ENET_TYPE_BITS 2
#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,
u64 address, u8 type, u16 length)
{
desc->address = cpu_to_le64(address);
desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
}
static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
u64 *address, u8 *type, u16 *length)
{
*address = le64_to_cpu(desc->address);
*length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
*type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &
RQ_ENET_TYPE_MASK);
}
#endif /* _RQ_ENET_DESC_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_cq.c
+73
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@@ -0,0 +1,73 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "vnic_dev.h"
#include "vnic_cq.h"
void vnic_cq_free(struct vnic_cq *cq)
{
vnic_dev_free_desc_ring(cq->vdev, &cq->ring);
cq->ctrl = NULL;
}
int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
unsigned int desc_count, unsigned int desc_size)
{
int err;
cq->index = index;
cq->vdev = vdev;
cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index);
if (!cq->ctrl) {
printk(KERN_ERR "Failed to hook CQ[%d] resource\n", index);
return -EINVAL;
}
err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size);
if (err)
return err;
return 0;
}
void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
unsigned int cq_tail_color, unsigned int interrupt_enable,
unsigned int cq_entry_enable, unsigned int cq_message_enable,
unsigned int interrupt_offset, u64 cq_message_addr)
{
u64 paddr;
paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &cq->ctrl->ring_base);
iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);
iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);
iowrite32(color_enable, &cq->ctrl->color_enable);
iowrite32(cq_head, &cq->ctrl->cq_head);
iowrite32(cq_tail, &cq->ctrl->cq_tail);
iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);
iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);
iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable);
iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
}
void vnic_cq_clean(struct vnic_cq *cq)
{
cq->to_clean = 0;
cq->last_color = 0;
iowrite32(0, &cq->ctrl->cq_head);
iowrite32(0, &cq->ctrl->cq_tail);
iowrite32(1, &cq->ctrl->cq_tail_color);
vnic_dev_clear_desc_ring(&cq->ring);
}
linux-7.2.3/drivers/scsi/fnic/vnic_cq.h
+109
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@@ -0,0 +1,109 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_CQ_H_
#define _VNIC_CQ_H_
#include "cq_desc.h"
#include "vnic_dev.h"
/*
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
* Driver) when both are built with CONFIG options =y
*/
#define vnic_cq_service fnic_cq_service
#define vnic_cq_free fnic_cq_free
#define vnic_cq_alloc fnic_cq_alloc
#define vnic_cq_init fnic_cq_init
#define vnic_cq_clean fnic_cq_clean
/* Completion queue control */
struct vnic_cq_ctrl {
u64 ring_base; /* 0x00 */
u32 ring_size; /* 0x08 */
u32 pad0;
u32 flow_control_enable; /* 0x10 */
u32 pad1;
u32 color_enable; /* 0x18 */
u32 pad2;
u32 cq_head; /* 0x20 */
u32 pad3;
u32 cq_tail; /* 0x28 */
u32 pad4;
u32 cq_tail_color; /* 0x30 */
u32 pad5;
u32 interrupt_enable; /* 0x38 */
u32 pad6;
u32 cq_entry_enable; /* 0x40 */
u32 pad7;
u32 cq_message_enable; /* 0x48 */
u32 pad8;
u32 interrupt_offset; /* 0x50 */
u32 pad9;
u64 cq_message_addr; /* 0x58 */
u32 pad10;
};
struct vnic_cq {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_cq_ctrl __iomem *ctrl; /* memory-mapped */
struct vnic_dev_ring ring;
unsigned int to_clean;
unsigned int last_color;
};
static inline unsigned int vnic_cq_service(struct vnic_cq *cq,
unsigned int work_to_do,
int (*q_service)(struct vnic_dev *vdev, struct cq_desc *cq_desc,
u8 type, u16 q_number, u16 completed_index, void *opaque),
void *opaque)
{
struct cq_desc *cq_desc;
unsigned int work_done = 0;
u16 q_number, completed_index;
u8 type, color;
cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs +
cq->ring.desc_size * cq->to_clean);
cq_desc_dec(cq_desc, &type, &color,
&q_number, &completed_index);
while (color != cq->last_color) {
if ((*q_service)(cq->vdev, cq_desc, type,
q_number, completed_index, opaque))
break;
cq->to_clean++;
if (cq->to_clean == cq->ring.desc_count) {
cq->to_clean = 0;
cq->last_color = cq->last_color ? 0 : 1;
}
cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs +
cq->ring.desc_size * cq->to_clean);
cq_desc_dec(cq_desc, &type, &color,
&q_number, &completed_index);
work_done++;
if (work_done >= work_to_do)
break;
}
return work_done;
}
void vnic_cq_free(struct vnic_cq *cq);
int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
unsigned int desc_count, unsigned int desc_size);
void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
unsigned int cq_tail_color, unsigned int interrupt_enable,
unsigned int cq_entry_enable, unsigned int message_enable,
unsigned int interrupt_offset, u64 message_addr);
void vnic_cq_clean(struct vnic_cq *cq);
#endif /* _VNIC_CQ_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_cq_copy.h
+50
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@@ -0,0 +1,50 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_CQ_COPY_H_
#define _VNIC_CQ_COPY_H_
#include "fcpio.h"
static inline unsigned int vnic_cq_copy_service(
struct vnic_cq *cq,
int (*q_service)(struct vnic_dev *vdev,
unsigned int index,
struct fcpio_fw_req *desc),
unsigned int work_to_do)
{
struct fcpio_fw_req *desc;
unsigned int work_done = 0;
u8 color;
desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
cq->ring.desc_size * cq->to_clean);
fcpio_color_dec(desc, &color);
while (color != cq->last_color) {
if ((*q_service)(cq->vdev, cq->index, desc))
break;
cq->to_clean++;
if (cq->to_clean == cq->ring.desc_count) {
cq->to_clean = 0;
cq->last_color = cq->last_color ? 0 : 1;
}
desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
cq->ring.desc_size * cq->to_clean);
fcpio_color_dec(desc, &color);
work_done++;
if (work_done >= work_to_do)
break;
}
return work_done;
}
#endif /* _VNIC_CQ_COPY_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_dev.c
+947
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@@ -0,0 +1,947 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/if_ether.h>
#include <linux/slab.h>
#include "vnic_resource.h"
#include "vnic_devcmd.h"
#include "vnic_dev.h"
#include "vnic_stats.h"
#include "vnic_wq.h"
struct devcmd2_controller {
struct vnic_wq_ctrl *wq_ctrl;
struct vnic_dev_ring results_ring;
struct vnic_wq wq;
struct vnic_devcmd2 *cmd_ring;
struct devcmd2_result *result;
u16 next_result;
u16 result_size;
int color;
};
enum vnic_proxy_type {
PROXY_NONE,
PROXY_BY_BDF,
PROXY_BY_INDEX,
};
struct vnic_res {
void __iomem *vaddr;
unsigned int count;
};
struct vnic_dev {
void *priv;
struct pci_dev *pdev;
struct vnic_res res[RES_TYPE_MAX];
enum vnic_dev_intr_mode intr_mode;
struct vnic_devcmd __iomem *devcmd;
struct vnic_devcmd_notify *notify;
struct vnic_devcmd_notify notify_copy;
dma_addr_t notify_pa;
u32 *linkstatus;
dma_addr_t linkstatus_pa;
struct vnic_stats *stats;
dma_addr_t stats_pa;
struct vnic_devcmd_fw_info *fw_info;
dma_addr_t fw_info_pa;
enum vnic_proxy_type proxy;
u32 proxy_index;
u64 args[VNIC_DEVCMD_NARGS];
struct devcmd2_controller *devcmd2;
int (*devcmd_rtn)(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
int wait);
};
#define VNIC_MAX_RES_HDR_SIZE \
(sizeof(struct vnic_resource_header) + \
sizeof(struct vnic_resource) * RES_TYPE_MAX)
#define VNIC_RES_STRIDE 128
void *vnic_dev_priv(struct vnic_dev *vdev)
{
return vdev->priv;
}
static int vnic_dev_discover_res(struct vnic_dev *vdev,
struct vnic_dev_bar *bar)
{
struct vnic_resource_header __iomem *rh;
struct vnic_resource __iomem *r;
u8 type;
if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
printk(KERN_ERR "vNIC BAR0 res hdr length error\n");
return -EINVAL;
}
rh = bar->vaddr;
if (!rh) {
printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n");
return -EINVAL;
}
if (ioread32(&rh->magic) != VNIC_RES_MAGIC ||
ioread32(&rh->version) != VNIC_RES_VERSION) {
printk(KERN_ERR "vNIC BAR0 res magic/version error "
"exp (%lx/%lx) curr (%x/%x)\n",
VNIC_RES_MAGIC, VNIC_RES_VERSION,
ioread32(&rh->magic), ioread32(&rh->version));
return -EINVAL;
}
r = (struct vnic_resource __iomem *)(rh + 1);
while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
u8 bar_num = ioread8(&r->bar);
u32 bar_offset = ioread32(&r->bar_offset);
u32 count = ioread32(&r->count);
u32 len;
r++;
if (bar_num != 0) /* only mapping in BAR0 resources */
continue;
switch (type) {
case RES_TYPE_WQ:
case RES_TYPE_RQ:
case RES_TYPE_CQ:
case RES_TYPE_INTR_CTRL:
/* each count is stride bytes long */
len = count * VNIC_RES_STRIDE;
if (len + bar_offset > bar->len) {
printk(KERN_ERR "vNIC BAR0 resource %d "
"out-of-bounds, offset 0x%x + "
"size 0x%x > bar len 0x%lx\n",
type, bar_offset,
len,
bar->len);
return -EINVAL;
}
break;
case RES_TYPE_INTR_PBA_LEGACY:
case RES_TYPE_DEVCMD2:
case RES_TYPE_DEVCMD:
len = count;
break;
default:
continue;
}
vdev->res[type].count = count;
vdev->res[type].vaddr = (char __iomem *)bar->vaddr + bar_offset;
}
pr_info("res_type_wq: %d res_type_rq: %d res_type_cq: %d res_type_intr_ctrl: %d\n",
vdev->res[RES_TYPE_WQ].count, vdev->res[RES_TYPE_RQ].count,
vdev->res[RES_TYPE_CQ].count, vdev->res[RES_TYPE_INTR_CTRL].count);
return 0;
}
unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
enum vnic_res_type type)
{
return vdev->res[type].count;
}
void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
unsigned int index)
{
if (!vdev->res[type].vaddr)
return NULL;
switch (type) {
case RES_TYPE_WQ:
case RES_TYPE_RQ:
case RES_TYPE_CQ:
case RES_TYPE_INTR_CTRL:
return (char __iomem *)vdev->res[type].vaddr +
index * VNIC_RES_STRIDE;
default:
return (char __iomem *)vdev->res[type].vaddr;
}
}
unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
unsigned int desc_count,
unsigned int desc_size)
{
/* The base address of the desc rings must be 512 byte aligned.
* Descriptor count is aligned to groups of 32 descriptors. A
* count of 0 means the maximum 4096 descriptors. Descriptor
* size is aligned to 16 bytes.
*/
unsigned int count_align = 32;
unsigned int desc_align = 16;
ring->base_align = 512;
if (desc_count == 0)
desc_count = 4096;
ring->desc_count = ALIGN(desc_count, count_align);
ring->desc_size = ALIGN(desc_size, desc_align);
ring->size = ring->desc_count * ring->desc_size;
ring->size_unaligned = ring->size + ring->base_align;
return ring->size_unaligned;
}
void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
{
memset(ring->descs, 0, ring->size);
}
int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
unsigned int desc_count, unsigned int desc_size)
{
vnic_dev_desc_ring_size(ring, desc_count, desc_size);
ring->descs_unaligned = dma_alloc_coherent(&vdev->pdev->dev,
ring->size_unaligned,
&ring->base_addr_unaligned, GFP_KERNEL);
if (!ring->descs_unaligned) {
printk(KERN_ERR
"Failed to allocate ring (size=%d), aborting\n",
(int)ring->size);
return -ENOMEM;
}
ring->base_addr = ALIGN(ring->base_addr_unaligned,
ring->base_align);
ring->descs = (u8 *)ring->descs_unaligned +
(ring->base_addr - ring->base_addr_unaligned);
vnic_dev_clear_desc_ring(ring);
ring->desc_avail = ring->desc_count - 1;
return 0;
}
void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
{
if (ring->descs) {
dma_free_coherent(&vdev->pdev->dev,
ring->size_unaligned,
ring->descs_unaligned,
ring->base_addr_unaligned);
ring->descs = NULL;
}
}
static int vnic_dev_cmd1(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, int wait)
{
struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
int delay;
u32 status;
static const int dev_cmd_err[] = {
/* convert from fw's version of error.h to host's version */
0, /* ERR_SUCCESS */
EINVAL, /* ERR_EINVAL */
EFAULT, /* ERR_EFAULT */
EPERM, /* ERR_EPERM */
EBUSY, /* ERR_EBUSY */
};
int err;
u64 *a0 = &vdev->args[0];
u64 *a1 = &vdev->args[1];
status = ioread32(&devcmd->status);
if (status & STAT_BUSY) {
printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd));
return -EBUSY;
}
if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
writeq(*a0, &devcmd->args[0]);
writeq(*a1, &devcmd->args[1]);
wmb();
}
iowrite32(cmd, &devcmd->cmd);
if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
return 0;
for (delay = 0; delay < wait; delay++) {
udelay(100);
status = ioread32(&devcmd->status);
if (!(status & STAT_BUSY)) {
if (status & STAT_ERROR) {
err = dev_cmd_err[(int)readq(&devcmd->args[0])];
printk(KERN_ERR "Error %d devcmd %d\n",
err, _CMD_N(cmd));
return -err;
}
if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
rmb();
*a0 = readq(&devcmd->args[0]);
*a1 = readq(&devcmd->args[1]);
}
return 0;
}
}
printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd));
return -ETIMEDOUT;
}
static int vnic_dev_cmd2(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
int wait)
{
struct devcmd2_controller *dc2c = vdev->devcmd2;
struct devcmd2_result *result;
u8 color;
unsigned int i;
int delay;
int err;
u32 fetch_index;
u32 posted;
u32 new_posted;
posted = ioread32(&dc2c->wq_ctrl->posted_index);
fetch_index = ioread32(&dc2c->wq_ctrl->fetch_index);
if (posted == 0xFFFFFFFF || fetch_index == 0xFFFFFFFF) {
/* Hardware surprise removal: return error */
pr_err("%s: devcmd2 invalid posted or fetch index on cmd %d\n",
pci_name(vdev->pdev), _CMD_N(cmd));
pr_err("%s: fetch index: %u, posted index: %u\n",
pci_name(vdev->pdev), fetch_index, posted);
return -ENODEV;
}
new_posted = (posted + 1) % DEVCMD2_RING_SIZE;
if (new_posted == fetch_index) {
pr_err("%s: devcmd2 wq full while issuing cmd %d\n",
pci_name(vdev->pdev), _CMD_N(cmd));
pr_err("%s: fetch index: %u, posted index: %u\n",
pci_name(vdev->pdev), fetch_index, posted);
return -EBUSY;
}
dc2c->cmd_ring[posted].cmd = cmd;
dc2c->cmd_ring[posted].flags = 0;
if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
dc2c->cmd_ring[posted].flags |= DEVCMD2_FNORESULT;
if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
dc2c->cmd_ring[posted].args[i] = vdev->args[i];
}
/* Adding write memory barrier prevents compiler and/or CPU
* reordering, thus avoiding descriptor posting before
* descriptor is initialized. Otherwise, hardware can read
* stale descriptor fields.
*/
wmb();
iowrite32(new_posted, &dc2c->wq_ctrl->posted_index);
if (dc2c->cmd_ring[posted].flags & DEVCMD2_FNORESULT)
return 0;
result = dc2c->result + dc2c->next_result;
color = dc2c->color;
dc2c->next_result++;
if (dc2c->next_result == dc2c->result_size) {
dc2c->next_result = 0;
dc2c->color = dc2c->color ? 0 : 1;
}
for (delay = 0; delay < wait; delay++) {
udelay(100);
if (result->color == color) {
if (result->error) {
err = -(int) result->error;
if (err != ERR_ECMDUNKNOWN ||
cmd != CMD_CAPABILITY)
pr_err("%s:Error %d devcmd %d\n",
pci_name(vdev->pdev),
err, _CMD_N(cmd));
return err;
}
if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
rmb(); /*prevent reorder while reding result*/
for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
vdev->args[i] = result->results[i];
}
return 0;
}
}
pr_err("%s:Timed out devcmd %d\n", pci_name(vdev->pdev), _CMD_N(cmd));
return -ETIMEDOUT;
}
static int vnic_dev_init_devcmd1(struct vnic_dev *vdev)
{
vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
if (!vdev->devcmd)
return -ENODEV;
vdev->devcmd_rtn = &vnic_dev_cmd1;
return 0;
}
static int vnic_dev_init_devcmd2(struct vnic_dev *vdev)
{
int err;
unsigned int fetch_index;
if (vdev->devcmd2)
return 0;
vdev->devcmd2 = kzalloc_obj(*vdev->devcmd2, GFP_ATOMIC);
if (!vdev->devcmd2)
return -ENOMEM;
vdev->devcmd2->color = 1;
vdev->devcmd2->result_size = DEVCMD2_RING_SIZE;
err = vnic_wq_devcmd2_alloc(vdev, &vdev->devcmd2->wq,
DEVCMD2_RING_SIZE, DEVCMD2_DESC_SIZE);
if (err)
goto err_free_devcmd2;
fetch_index = ioread32(&vdev->devcmd2->wq.ctrl->fetch_index);
if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */
pr_err("error in devcmd2 init");
err = -ENODEV;
goto err_free_wq;
}
/*
* Don't change fetch_index ever and
* set posted_index same as fetch_index
* when setting up the WQ for devcmd2.
*/
vnic_wq_init_start(&vdev->devcmd2->wq, 0, fetch_index,
fetch_index, 0, 0);
vnic_wq_enable(&vdev->devcmd2->wq);
err = vnic_dev_alloc_desc_ring(vdev, &vdev->devcmd2->results_ring,
DEVCMD2_RING_SIZE, DEVCMD2_DESC_SIZE);
if (err)
goto err_disable_wq;
vdev->devcmd2->result =
(struct devcmd2_result *) vdev->devcmd2->results_ring.descs;
vdev->devcmd2->cmd_ring =
(struct vnic_devcmd2 *) vdev->devcmd2->wq.ring.descs;
vdev->devcmd2->wq_ctrl = vdev->devcmd2->wq.ctrl;
vdev->args[0] = (u64) vdev->devcmd2->results_ring.base_addr |
VNIC_PADDR_TARGET;
vdev->args[1] = DEVCMD2_RING_SIZE;
err = vnic_dev_cmd2(vdev, CMD_INITIALIZE_DEVCMD2, 1000);
if (err)
goto err_free_desc_ring;
vdev->devcmd_rtn = &vnic_dev_cmd2;
return 0;
err_free_desc_ring:
vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring);
err_disable_wq:
vnic_wq_disable(&vdev->devcmd2->wq);
err_free_wq:
vnic_wq_free(&vdev->devcmd2->wq);
err_free_devcmd2:
kfree(vdev->devcmd2);
vdev->devcmd2 = NULL;
return err;
}
static void vnic_dev_deinit_devcmd2(struct vnic_dev *vdev)
{
vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring);
vnic_wq_disable(&vdev->devcmd2->wq);
vnic_wq_free(&vdev->devcmd2->wq);
kfree(vdev->devcmd2);
vdev->devcmd2 = NULL;
vdev->devcmd_rtn = &vnic_dev_cmd1;
}
static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
{
int err;
vdev->args[0] = *a0;
vdev->args[1] = *a1;
err = (*vdev->devcmd_rtn)(vdev, cmd, wait);
*a0 = vdev->args[0];
*a1 = vdev->args[1];
return err;
}
int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
u64 *a0, u64 *a1, int wait)
{
memset(vdev->args, 0, sizeof(vdev->args));
switch (vdev->proxy) {
case PROXY_NONE:
default:
return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
}
}
int vnic_dev_fw_info(struct vnic_dev *vdev,
struct vnic_devcmd_fw_info **fw_info)
{
u64 a0, a1 = 0;
int wait = 1000;
int err = 0;
if (!vdev->fw_info) {
vdev->fw_info = dma_alloc_coherent(&vdev->pdev->dev,
sizeof(struct vnic_devcmd_fw_info),
&vdev->fw_info_pa, GFP_KERNEL);
if (!vdev->fw_info)
return -ENOMEM;
a0 = vdev->fw_info_pa;
/* only get fw_info once and cache it */
err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait);
}
*fw_info = vdev->fw_info;
return err;
}
int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
void *value)
{
u64 a0, a1;
int wait = 1000;
int err;
a0 = offset;
a1 = size;
err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
switch (size) {
case 1:
*(u8 *)value = (u8)a0;
break;
case 2:
*(u16 *)value = (u16)a0;
break;
case 4:
*(u32 *)value = (u32)a0;
break;
case 8:
*(u64 *)value = a0;
break;
default:
BUG();
break;
}
return err;
}
int vnic_dev_stats_clear(struct vnic_dev *vdev)
{
u64 a0 = 0, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
}
int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
{
u64 a0, a1;
int wait = 1000;
if (!vdev->stats) {
vdev->stats = dma_alloc_coherent(&vdev->pdev->dev,
sizeof(struct vnic_stats), &vdev->stats_pa, GFP_KERNEL);
if (!vdev->stats)
return -ENOMEM;
}
*stats = vdev->stats;
a0 = vdev->stats_pa;
a1 = sizeof(struct vnic_stats);
return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
}
int vnic_dev_close(struct vnic_dev *vdev)
{
u64 a0 = 0, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
}
int vnic_dev_enable(struct vnic_dev *vdev)
{
u64 a0 = 0, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
}
int vnic_dev_disable(struct vnic_dev *vdev)
{
u64 a0 = 0, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
}
int vnic_dev_open(struct vnic_dev *vdev, int arg)
{
u64 a0 = (u32)arg, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
}
int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
{
u64 a0 = 0, a1 = 0;
int wait = 1000;
int err;
*done = 0;
err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
if (err)
return err;
*done = (a0 == 0);
return 0;
}
int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
{
u64 a0 = (u32)arg, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
}
int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
{
u64 a0 = 0, a1 = 0;
int wait = 1000;
int err;
*done = 0;
err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
if (err)
return err;
*done = (a0 == 0);
return 0;
}
int vnic_dev_hang_notify(struct vnic_dev *vdev)
{
u64 a0 = 0, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
}
int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
{
u64 a[2] = {};
int wait = 1000;
int err, i;
for (i = 0; i < ETH_ALEN; i++)
mac_addr[i] = 0;
err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a[0], &a[1], wait);
if (err)
return err;
for (i = 0; i < ETH_ALEN; i++)
mac_addr[i] = ((u8 *)&a)[i];
return 0;
}
void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
int broadcast, int promisc, int allmulti)
{
u64 a0, a1 = 0;
int wait = 1000;
int err;
a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
(multicast ? CMD_PFILTER_MULTICAST : 0) |
(broadcast ? CMD_PFILTER_BROADCAST : 0) |
(promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
(allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
if (err)
printk(KERN_ERR "Can't set packet filter\n");
}
void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
{
u64 a[2] = {};
int wait = 1000;
int err;
int i;
for (i = 0; i < ETH_ALEN; i++)
((u8 *)&a)[i] = addr[i];
err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a[0], &a[1], wait);
if (err)
pr_err("Can't add addr [%pM], %d\n", addr, err);
}
void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
{
u64 a[2] = {};
int wait = 1000;
int err;
int i;
for (i = 0; i < ETH_ALEN; i++)
((u8 *)&a)[i] = addr[i];
err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a[0], &a[1], wait);
if (err)
pr_err("Can't del addr [%pM], %d\n", addr, err);
}
int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
{
u64 a0, a1;
int wait = 1000;
if (!vdev->notify) {
vdev->notify = dma_alloc_coherent(&vdev->pdev->dev,
sizeof(struct vnic_devcmd_notify),
&vdev->notify_pa, GFP_KERNEL);
if (!vdev->notify)
return -ENOMEM;
}
a0 = vdev->notify_pa;
a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
a1 += sizeof(struct vnic_devcmd_notify);
return vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
}
void vnic_dev_notify_unset(struct vnic_dev *vdev)
{
u64 a0, a1;
int wait = 1000;
a0 = 0; /* paddr = 0 to unset notify buffer */
a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
a1 += sizeof(struct vnic_devcmd_notify);
vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
}
static int vnic_dev_notify_ready(struct vnic_dev *vdev)
{
u32 *words;
unsigned int nwords = sizeof(struct vnic_devcmd_notify) / 4;
unsigned int i;
u32 csum;
if (!vdev->notify)
return 0;
do {
csum = 0;
memcpy(&vdev->notify_copy, vdev->notify,
sizeof(struct vnic_devcmd_notify));
words = (u32 *)&vdev->notify_copy;
for (i = 1; i < nwords; i++)
csum += words[i];
} while (csum != words[0]);
return 1;
}
int vnic_dev_init(struct vnic_dev *vdev, int arg)
{
u64 a0 = (u32)arg, a1 = 0;
int wait = 1000;
return vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
}
u16 vnic_dev_set_default_vlan(struct vnic_dev *vdev, u16 new_default_vlan)
{
u64 a0 = new_default_vlan, a1 = 0;
int wait = 1000;
int old_vlan = 0;
old_vlan = vnic_dev_cmd(vdev, CMD_SET_DEFAULT_VLAN, &a0, &a1, wait);
return (u16)old_vlan;
}
int vnic_dev_link_status(struct vnic_dev *vdev)
{
if (vdev->linkstatus)
return *vdev->linkstatus;
if (!vnic_dev_notify_ready(vdev))
return 0;
return vdev->notify_copy.link_state;
}
u32 vnic_dev_port_speed(struct vnic_dev *vdev)
{
if (!vnic_dev_notify_ready(vdev))
return 0;
return vdev->notify_copy.port_speed;
}
u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
{
if (!vnic_dev_notify_ready(vdev))
return 0;
return vdev->notify_copy.msglvl;
}
u32 vnic_dev_mtu(struct vnic_dev *vdev)
{
if (!vnic_dev_notify_ready(vdev))
return 0;
return vdev->notify_copy.mtu;
}
u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev)
{
if (!vnic_dev_notify_ready(vdev))
return 0;
return vdev->notify_copy.link_down_cnt;
}
void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
enum vnic_dev_intr_mode intr_mode)
{
vdev->intr_mode = intr_mode;
}
enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
struct vnic_dev *vdev)
{
return vdev->intr_mode;
}
void vnic_dev_unregister(struct vnic_dev *vdev)
{
if (vdev) {
if (vdev->notify)
dma_free_coherent(&vdev->pdev->dev,
sizeof(struct vnic_devcmd_notify),
vdev->notify,
vdev->notify_pa);
if (vdev->linkstatus)
dma_free_coherent(&vdev->pdev->dev,
sizeof(u32),
vdev->linkstatus,
vdev->linkstatus_pa);
if (vdev->stats)
dma_free_coherent(&vdev->pdev->dev,
sizeof(struct vnic_stats),
vdev->stats, vdev->stats_pa);
if (vdev->fw_info)
dma_free_coherent(&vdev->pdev->dev,
sizeof(struct vnic_devcmd_fw_info),
vdev->fw_info, vdev->fw_info_pa);
if (vdev->devcmd2)
vnic_dev_deinit_devcmd2(vdev);
kfree(vdev);
}
}
struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar)
{
if (!vdev) {
vdev = kzalloc_obj(struct vnic_dev);
if (!vdev)
return NULL;
}
vdev->priv = priv;
vdev->pdev = pdev;
if (vnic_dev_discover_res(vdev, bar))
goto err_out;
return vdev;
err_out:
vnic_dev_unregister(vdev);
return NULL;
}
int vnic_dev_cmd_init(struct vnic_dev *vdev)
{
int err;
void *p;
p = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD2, 0);
if (p) {
pr_err("fnic: DEVCMD2 resource found!\n");
err = vnic_dev_init_devcmd2(vdev);
} else {
pr_err("fnic: DEVCMD2 not found, fall back to Devcmd\n");
err = vnic_dev_init_devcmd1(vdev);
}
return err;
}
linux-7.2.3/drivers/scsi/fnic/vnic_dev.h
+153
View File
@@ -0,0 +1,153 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_DEV_H_
#define _VNIC_DEV_H_
#include "vnic_resource.h"
#include "vnic_devcmd.h"
/*
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
* Driver) when both are built with CONFIG options =y
*/
#define vnic_dev_priv fnic_dev_priv
#define vnic_dev_get_res_count fnic_dev_get_res_count
#define vnic_dev_get_res fnic_dev_get_res
#define vnic_dev_desc_ring_size fnic_dev_desc_ring_siz
#define vnic_dev_clear_desc_ring fnic_dev_clear_desc_ring
#define vnic_dev_alloc_desc_ring fnic_dev_alloc_desc_ring
#define vnic_dev_free_desc_ring fnic_dev_free_desc_ring
#define vnic_dev_cmd fnic_dev_cmd
#define vnic_dev_fw_info fnic_dev_fw_info
#define vnic_dev_spec fnic_dev_spec
#define vnic_dev_stats_clear fnic_dev_stats_clear
#define vnic_dev_cmd_init fnic_dev_cmd_init
#define vnic_dev_stats_dump fnic_dev_stats_dump
#define vnic_dev_hang_notify fnic_dev_hang_notify
#define vnic_dev_packet_filter fnic_dev_packet_filter
#define vnic_dev_add_addr fnic_dev_add_addr
#define vnic_dev_del_addr fnic_dev_del_addr
#define vnic_dev_mac_addr fnic_dev_mac_addr
#define vnic_dev_notify_set fnic_dev_notify_set
#define vnic_dev_notify_unset fnic_dev_notify_unset
#define vnic_dev_link_status fnic_dev_link_status
#define vnic_dev_port_speed fnic_dev_port_speed
#define vnic_dev_msg_lvl fnic_dev_msg_lvl
#define vnic_dev_mtu fnic_dev_mtu
#define vnic_dev_link_down_cnt fnic_dev_link_down_cnt
#define vnic_dev_close fnic_dev_close
#define vnic_dev_enable fnic_dev_enable
#define vnic_dev_disable fnic_dev_disable
#define vnic_dev_open fnic_dev_open
#define vnic_dev_open_done fnic_dev_open_done
#define vnic_dev_init fnic_dev_init
#define vnic_dev_soft_reset fnic_dev_soft_reset
#define vnic_dev_soft_reset_done fnic_dev_soft_reset_done
#define vnic_dev_set_intr_mode fnic_dev_set_intr_mode
#define vnic_dev_get_intr_mode fnic_dev_get_intr_mode
#define vnic_dev_unregister fnic_dev_unregister
#define vnic_dev_register fnic_dev_register
#ifndef VNIC_PADDR_TARGET
#define VNIC_PADDR_TARGET 0x0000000000000000ULL
#endif
#ifndef readq
static inline u64 readq(void __iomem *reg)
{
return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg);
}
static inline void writeq(u64 val, void __iomem *reg)
{
writel(val & 0xffffffff, reg);
writel(val >> 32, reg + 0x4UL);
}
#endif
enum vnic_dev_intr_mode {
VNIC_DEV_INTR_MODE_UNKNOWN,
VNIC_DEV_INTR_MODE_INTX,
VNIC_DEV_INTR_MODE_MSI,
VNIC_DEV_INTR_MODE_MSIX,
};
struct vnic_dev_bar {
void __iomem *vaddr;
dma_addr_t bus_addr;
unsigned long len;
};
struct vnic_dev_ring {
void *descs;
size_t size;
dma_addr_t base_addr;
size_t base_align;
void *descs_unaligned;
size_t size_unaligned;
dma_addr_t base_addr_unaligned;
unsigned int desc_size;
unsigned int desc_count;
unsigned int desc_avail;
};
struct vnic_dev;
struct vnic_stats;
void *vnic_dev_priv(struct vnic_dev *vdev);
unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
enum vnic_res_type type);
void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
unsigned int index);
unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
unsigned int desc_count,
unsigned int desc_size);
void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
unsigned int desc_count, unsigned int desc_size);
void vnic_dev_free_desc_ring(struct vnic_dev *vdev,
struct vnic_dev_ring *ring);
int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
u64 *a0, u64 *a1, int wait);
int vnic_dev_fw_info(struct vnic_dev *vdev,
struct vnic_devcmd_fw_info **fw_info);
int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset,
unsigned int size, void *value);
int vnic_dev_stats_clear(struct vnic_dev *vdev);
int vnic_dev_cmd_init(struct vnic_dev *vdev);
int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
int vnic_dev_hang_notify(struct vnic_dev *vdev);
void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
int broadcast, int promisc, int allmulti);
void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr);
void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr);
int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr);
int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
void vnic_dev_notify_unset(struct vnic_dev *vdev);
int vnic_dev_link_status(struct vnic_dev *vdev);
u32 vnic_dev_port_speed(struct vnic_dev *vdev);
u32 vnic_dev_msg_lvl(struct vnic_dev *vdev);
u32 vnic_dev_mtu(struct vnic_dev *vdev);
u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev);
int vnic_dev_close(struct vnic_dev *vdev);
int vnic_dev_enable(struct vnic_dev *vdev);
int vnic_dev_disable(struct vnic_dev *vdev);
int vnic_dev_open(struct vnic_dev *vdev, int arg);
int vnic_dev_open_done(struct vnic_dev *vdev, int *done);
int vnic_dev_init(struct vnic_dev *vdev, int arg);
u16 vnic_dev_set_default_vlan(struct vnic_dev *vdev,
u16 new_default_vlan);
int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg);
int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done);
void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
enum vnic_dev_intr_mode intr_mode);
enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev);
void vnic_dev_unregister(struct vnic_dev *vdev);
struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
void *priv, struct pci_dev *pdev,
struct vnic_dev_bar *bar);
#endif /* _VNIC_DEV_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_devcmd.h
+492
View File
@@ -0,0 +1,492 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_DEVCMD_H_
#define _VNIC_DEVCMD_H_
#define _CMD_NBITS 14
#define _CMD_VTYPEBITS 10
#define _CMD_FLAGSBITS 6
#define _CMD_DIRBITS 2
#define _CMD_NMASK ((1 << _CMD_NBITS)-1)
#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1)
#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1)
#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1)
#define _CMD_NSHIFT 0
#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
/*
* Direction bits (from host perspective).
*/
#define _CMD_DIR_NONE 0U
#define _CMD_DIR_WRITE 1U
#define _CMD_DIR_READ 2U
#define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ)
/*
* Flag bits.
*/
#define _CMD_FLAGS_NONE 0U
#define _CMD_FLAGS_NOWAIT 1U
/*
* vNIC type bits.
*/
#define _CMD_VTYPE_NONE 0U
#define _CMD_VTYPE_ENET 1U
#define _CMD_VTYPE_FC 2U
#define _CMD_VTYPE_SCSI 4U
#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)
/*
* Used to create cmds..
*/
#define _CMDCF(dir, flags, vtype, nr) \
(((dir) << _CMD_DIRSHIFT) | \
((flags) << _CMD_FLAGSSHIFT) | \
((vtype) << _CMD_VTYPESHIFT) | \
((nr) << _CMD_NSHIFT))
#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr)
#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
/*
* Used to decode cmds..
*/
#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
enum vnic_devcmd_cmd {
CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),
/* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */
CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),
/* dev-specific block member:
* in: (u16)a0=offset,(u8)a1=size
* out: a0=value */
CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),
/* stats clear */
CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),
/* stats dump in mem: (u64)a0=paddr to stats area,
* (u16)a1=sizeof stats area */
CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),
/* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */
CMD_PACKET_FILTER = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 7),
/* hang detection notification */
CMD_HANG_NOTIFY = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8),
/* MAC address in (u48)a0 */
CMD_MAC_ADDR = _CMDC(_CMD_DIR_READ,
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9),
/* disable/enable promisc mode: (u8)a0=0/1 */
/***** XXX DEPRECATED *****/
CMD_PROMISC_MODE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 10),
/* disable/enable all-multi mode: (u8)a0=0/1 */
/***** XXX DEPRECATED *****/
CMD_ALLMULTI_MODE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 11),
/* add addr from (u48)a0 */
CMD_ADDR_ADD = _CMDCNW(_CMD_DIR_WRITE,
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12),
/* del addr from (u48)a0 */
CMD_ADDR_DEL = _CMDCNW(_CMD_DIR_WRITE,
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13),
/* add VLAN id in (u16)a0 */
CMD_VLAN_ADD = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14),
/* del VLAN id in (u16)a0 */
CMD_VLAN_DEL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15),
/* nic_cfg in (u32)a0 */
CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),
/* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */
CMD_RSS_KEY = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17),
/* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */
CMD_RSS_CPU = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18),
/* initiate softreset */
CMD_SOFT_RESET = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19),
/* softreset status:
* out: a0=0 reset complete, a0=1 reset in progress */
CMD_SOFT_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20),
/* set struct vnic_devcmd_notify buffer in mem:
* in:
* (u64)a0=paddr to notify (set paddr=0 to unset)
* (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
* (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
* out:
* (u32)a1 = effective size
*/
CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),
/* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct,
* (u8)a1=PXENV_UNDI_xxx */
CMD_UNDI = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22),
/* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),
/* open status:
* out: a0=0 open complete, a0=1 open in progress */
CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),
/* close vnic */
CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
CMD_INIT = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
/* variant of CMD_INIT, with provisioning info
* (u64)a0=paddr of vnic_devcmd_provinfo
* (u32)a1=sizeof provision info
*/
CMD_INIT_PROV_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27),
/* enable virtual link */
CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
/* disable virtual link */
CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),
/* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */
CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),
/* init status:
* out: a0=0 init complete, a0=1 init in progress
* if a0=0, a1=errno */
CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),
/* INT13 API: (u64)a0=paddr to vnic_int13_params struct
* (u8)a1=INT13_CMD_xxx */
CMD_INT13 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32),
/* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */
CMD_LOGICAL_UPLINK = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33),
/* undo initialize of virtual link */
CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
/* check fw capability of a cmd:
* in: (u32)a0=cmd
* out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
/* persistent binding info
* in: (u64)a0=paddr of arg
* (u32)a1=CMD_PERBI_XXX */
CMD_PERBI = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_FC, 37),
/* Interrupt Assert Register functionality
* in: (u16)a0=interrupt number to assert
*/
CMD_IAR = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 38),
/* initiate hangreset, like softreset after hang detected */
CMD_HANG_RESET = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 39),
/* hangreset status:
* out: a0=0 reset complete, a0=1 reset in progress */
CMD_HANG_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 40),
/*
* Set hw ingress packet vlan rewrite mode:
* in: (u32)a0=new vlan rewrite mode
* out: (u32)a0=old vlan rewrite mode */
CMD_IG_VLAN_REWRITE_MODE = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 41),
/*
* in: (u16)a0=bdf of target vnic
* (u32)a1=cmd to proxy
* a2-a15=args to cmd in a1
* out: (u32)a0=status of proxied cmd
* a1-a15=out args of proxied cmd */
CMD_PROXY_BY_BDF = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 42),
/*
* As for BY_BDF except a0 is index of hvnlink subordinate vnic
* or SR-IOV virtual vnic
*/
CMD_PROXY_BY_INDEX = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 43),
/*
* For HPP toggle:
* adapter-info-get
* in: (u64)a0=phsical address of buffer passed in from caller.
* (u16)a1=size of buffer specified in a0.
* out: (u64)a0=phsical address of buffer passed in from caller.
* (u16)a1=actual bytes from VIF-CONFIG-INFO TLV, or
* 0 if no VIF-CONFIG-INFO TLV was ever received. */
CMD_CONFIG_INFO_GET = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 44),
/*
* INT13 API: (u64)a0=paddr to vnic_int13_params struct
* (u32)a1=INT13_CMD_xxx
*/
CMD_INT13_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 45),
/*
* Set default vlan:
* in: (u16)a0=new default vlan
* (u16)a1=zero for overriding vlan with param a0,
* non-zero for resetting vlan to the default
* out: (u16)a0=old default vlan
*/
CMD_SET_DEFAULT_VLAN = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 46),
/* init_prov_info2:
* Variant of CMD_INIT_PROV_INFO, where it will not try to enable
* the vnic until CMD_ENABLE2 is issued.
* (u64)a0=paddr of vnic_devcmd_provinfo
* (u32)a1=sizeof provision info
*/
CMD_INIT_PROV_INFO2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 47),
/* enable2:
* (u32)a0=0 ==> standby
* =CMD_ENABLE2_ACTIVE ==> active
*/
CMD_ENABLE2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 48),
/*
* cmd_status:
* Returns the status of the specified command
* Input:
* a0 = command for which status is being queried.
* Possible values are:
* CMD_SOFT_RESET
* CMD_HANG_RESET
* CMD_OPEN
* CMD_INIT
* CMD_INIT_PROV_INFO
* CMD_DEINIT
* CMD_INIT_PROV_INFO2
* CMD_ENABLE2
* Output:
* if status == STAT_ERROR
* a0 = ERR_ENOTSUPPORTED - status for command in a0 is
* not supported
* if status == STAT_NONE
* a0 = status of the devcmd specified in a0 as follows.
* ERR_SUCCESS - command in a0 completed successfully
* ERR_EINPROGRESS - command in a0 is still in progress
*/
CMD_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 49),
/*
* Returns interrupt coalescing timer conversion factors.
* After calling this devcmd, ENIC driver can convert
* interrupt coalescing timer in usec into CPU cycles as follows:
*
* intr_timer_cycles = intr_timer_usec * multiplier / divisor
*
* Interrupt coalescing timer in usecs can be be converted/obtained
* from CPU cycles as follows:
*
* intr_timer_usec = intr_timer_cycles * divisor / multiplier
*
* in: none
* out: (u32)a0 = multiplier
* (u32)a1 = divisor
* (u32)a2 = maximum timer value in usec
*/
CMD_INTR_COAL_CONVERT = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 50),
/*
* ISCSI DUMP API:
* in: (u64)a0=paddr of the param or param itself
* (u32)a1=ISCSI_CMD_xxx
*/
CMD_ISCSI_DUMP_REQ = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 51),
/*
* ISCSI DUMP STATUS API:
* in: (u32)a0=cmd tag
* in: (u32)a1=ISCSI_CMD_xxx
* out: (u32)a0=cmd status
*/
CMD_ISCSI_DUMP_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 52),
/*
* Subvnic migration from MQ <--> VF.
* Enable the LIF migration from MQ to VF and vice versa. MQ and VF
* indexes are statically bound at the time of initialization.
* Based on the
* direction of migration, the resources of either MQ or the VF shall
* be attached to the LIF.
* in: (u32)a0=Direction of Migration
* 0=> Migrate to VF
* 1=> Migrate to MQ
* (u32)a1=VF index (MQ index)
*/
CMD_MIGRATE_SUBVNIC = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 53),
/*
* Register / Deregister the notification block for MQ subvnics
* in:
* (u64)a0=paddr to notify (set paddr=0 to unset)
* (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
* (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
* out:
* (u32)a1 = effective size
*/
CMD_SUBVNIC_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 54),
/*
* Set the predefined mac address as default
* in:
* (u48)a0=mac addr
*/
CMD_SET_MAC_ADDR = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 55),
/* Update the provisioning info of the given VIF
* (u64)a0=paddr of vnic_devcmd_provinfo
* (u32)a1=sizeof provision info
*/
CMD_PROV_INFO_UPDATE = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 56),
/*
* Initialization for the devcmd2 interface.
* in: (u64) a0=host result buffer physical address
* in: (u16) a1=number of entries in result buffer
*/
CMD_INITIALIZE_DEVCMD2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 57)
};
/* flags for CMD_OPEN */
#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */
#define CMD_OPENF_RQ_ENABLE_THEN_POST 0x2
/* flags for CMD_INIT */
#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */
/* flags for CMD_PACKET_FILTER */
#define CMD_PFILTER_DIRECTED 0x01
#define CMD_PFILTER_MULTICAST 0x02
#define CMD_PFILTER_BROADCAST 0x04
#define CMD_PFILTER_PROMISCUOUS 0x08
#define CMD_PFILTER_ALL_MULTICAST 0x10
enum vnic_devcmd_status {
STAT_NONE = 0,
STAT_BUSY = 1 << 0, /* cmd in progress */
STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */
};
enum vnic_devcmd_error {
ERR_SUCCESS = 0,
ERR_EINVAL = 1,
ERR_EFAULT = 2,
ERR_EPERM = 3,
ERR_EBUSY = 4,
ERR_ECMDUNKNOWN = 5,
ERR_EBADSTATE = 6,
ERR_ENOMEM = 7,
ERR_ETIMEDOUT = 8,
ERR_ELINKDOWN = 9,
};
struct vnic_devcmd_fw_info {
char fw_version[32];
char fw_build[32];
char hw_version[32];
char hw_serial_number[32];
};
struct vnic_devcmd_notify {
u32 csum; /* checksum over following words */
u32 link_state; /* link up == 1 */
u32 port_speed; /* effective port speed (rate limit) */
u32 mtu; /* MTU */
u32 msglvl; /* requested driver msg lvl */
u32 uif; /* uplink interface */
u32 status; /* status bits (see VNIC_STF_*) */
u32 error; /* error code (see ERR_*) for first ERR */
u32 link_down_cnt; /* running count of link down transitions */
};
#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */
struct vnic_devcmd_provinfo {
u8 oui[3];
u8 type;
u8 data[];
};
/*
* Writing cmd register causes STAT_BUSY to get set in status register.
* When cmd completes, STAT_BUSY will be cleared.
*
* If cmd completed successfully STAT_ERROR will be clear
* and args registers contain cmd-specific results.
*
* If cmd error, STAT_ERROR will be set and args[0] contains error code.
*
* status register is read-only. While STAT_BUSY is set,
* all other register contents are read-only.
*/
/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
#define VNIC_DEVCMD_NARGS 15
struct vnic_devcmd {
u32 status; /* RO */
u32 cmd; /* RW */
u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */
};
/*
* Version 2 of the interface.
*
* Some things are carried over, notably the vnic_devcmd_cmd enum.
*/
/*
* Flags for vnic_devcmd2.flags
*/
#define DEVCMD2_FNORESULT 0x1 /* Don't copy result to host */
#define VNIC_DEVCMD2_NARGS VNIC_DEVCMD_NARGS
struct vnic_devcmd2 {
u16 pad;
u16 flags;
u32 cmd; /* same command #defines as original */
u64 args[VNIC_DEVCMD2_NARGS];
};
#define VNIC_DEVCMD2_NRESULTS VNIC_DEVCMD_NARGS
struct devcmd2_result {
u64 results[VNIC_DEVCMD2_NRESULTS];
u32 pad;
u16 completed_index; /* into copy WQ */
u8 error; /* same error codes as original */
u8 color; /* 0 or 1 as with completion queues */
};
#define DEVCMD2_RING_SIZE 32
#define DEVCMD2_DESC_SIZE 128
#define DEVCMD2_RESULTS_SIZE_MAX ((1 << 16) - 1)
#endif /* _VNIC_DEVCMD_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_intr.c
+48
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@@ -0,0 +1,48 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include "vnic_dev.h"
#include "vnic_intr.h"
void vnic_intr_free(struct vnic_intr *intr)
{
intr->ctrl = NULL;
}
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
unsigned int index)
{
intr->index = index;
intr->vdev = vdev;
intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
if (!intr->ctrl) {
printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n",
index);
return -EINVAL;
}
return 0;
}
void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
unsigned int coalescing_type, unsigned int mask_on_assertion)
{
iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
iowrite32(0, &intr->ctrl->int_credits);
}
void vnic_intr_clean(struct vnic_intr *intr)
{
iowrite32(0, &intr->ctrl->int_credits);
}
linux-7.2.3/drivers/scsi/fnic/vnic_intr.h
+106
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@@ -0,0 +1,106 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_INTR_H_
#define _VNIC_INTR_H_
#include <linux/pci.h>
#include "vnic_dev.h"
/*
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
* Driver) when both are built with CONFIG options =y
*/
#define vnic_intr_unmask fnic_intr_unmask
#define vnic_intr_mask fnic_intr_mask
#define vnic_intr_return_credits fnic_intr_return_credits
#define vnic_intr_credits fnic_intr_credits
#define vnic_intr_return_all_credits fnic_intr_return_all_credits
#define vnic_intr_legacy_pba fnic_intr_legacy_pba
#define vnic_intr_free fnic_intr_free
#define vnic_intr_alloc fnic_intr_alloc
#define vnic_intr_init fnic_intr_init
#define vnic_intr_clean fnic_intr_clean
#define VNIC_INTR_TIMER_MAX 0xffff
#define VNIC_INTR_TIMER_TYPE_ABS 0
#define VNIC_INTR_TIMER_TYPE_QUIET 1
/* Interrupt control */
struct vnic_intr_ctrl {
u32 coalescing_timer; /* 0x00 */
u32 pad0;
u32 coalescing_value; /* 0x08 */
u32 pad1;
u32 coalescing_type; /* 0x10 */
u32 pad2;
u32 mask_on_assertion; /* 0x18 */
u32 pad3;
u32 mask; /* 0x20 */
u32 pad4;
u32 int_credits; /* 0x28 */
u32 pad5;
u32 int_credit_return; /* 0x30 */
u32 pad6;
};
struct vnic_intr {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */
};
static inline void vnic_intr_unmask(struct vnic_intr *intr)
{
iowrite32(0, &intr->ctrl->mask);
}
static inline void vnic_intr_mask(struct vnic_intr *intr)
{
iowrite32(1, &intr->ctrl->mask);
}
static inline void vnic_intr_return_credits(struct vnic_intr *intr,
unsigned int credits, int unmask, int reset_timer)
{
#define VNIC_INTR_UNMASK_SHIFT 16
#define VNIC_INTR_RESET_TIMER_SHIFT 17
u32 int_credit_return = (credits & 0xffff) |
(unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) |
(reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0);
iowrite32(int_credit_return, &intr->ctrl->int_credit_return);
}
static inline unsigned int vnic_intr_credits(struct vnic_intr *intr)
{
return ioread32(&intr->ctrl->int_credits);
}
static inline void vnic_intr_return_all_credits(struct vnic_intr *intr)
{
unsigned int credits = vnic_intr_credits(intr);
int unmask = 1;
int reset_timer = 1;
vnic_intr_return_credits(intr, credits, unmask, reset_timer);
}
static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba)
{
/* read PBA without clearing */
return ioread32(legacy_pba);
}
void vnic_intr_free(struct vnic_intr *intr);
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
unsigned int index);
void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
unsigned int coalescing_type, unsigned int mask_on_assertion);
void vnic_intr_clean(struct vnic_intr *intr);
#endif /* _VNIC_INTR_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_nic.h
+57
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@@ -0,0 +1,57 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_NIC_H_
#define _VNIC_NIC_H_
/*
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
* Driver) when both are built with CONFIG options =y
*/
#define vnic_set_nic_cfg fnic_set_nic_cfg
#define NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD 0xffUL
#define NIC_CFG_RSS_DEFAULT_CPU_SHIFT 0
#define NIC_CFG_RSS_HASH_TYPE (0xffUL << 8)
#define NIC_CFG_RSS_HASH_TYPE_MASK_FIELD 0xffUL
#define NIC_CFG_RSS_HASH_TYPE_SHIFT 8
#define NIC_CFG_RSS_HASH_BITS (7UL << 16)
#define NIC_CFG_RSS_HASH_BITS_MASK_FIELD 7UL
#define NIC_CFG_RSS_HASH_BITS_SHIFT 16
#define NIC_CFG_RSS_BASE_CPU (7UL << 19)
#define NIC_CFG_RSS_BASE_CPU_MASK_FIELD 7UL
#define NIC_CFG_RSS_BASE_CPU_SHIFT 19
#define NIC_CFG_RSS_ENABLE (1UL << 22)
#define NIC_CFG_RSS_ENABLE_MASK_FIELD 1UL
#define NIC_CFG_RSS_ENABLE_SHIFT 22
#define NIC_CFG_TSO_IPID_SPLIT_EN (1UL << 23)
#define NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD 1UL
#define NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT 23
#define NIC_CFG_IG_VLAN_STRIP_EN (1UL << 24)
#define NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD 1UL
#define NIC_CFG_IG_VLAN_STRIP_EN_SHIFT 24
static inline void vnic_set_nic_cfg(u32 *nic_cfg,
u8 rss_default_cpu, u8 rss_hash_type,
u8 rss_hash_bits, u8 rss_base_cpu,
u8 rss_enable, u8 tso_ipid_split_en,
u8 ig_vlan_strip_en)
{
*nic_cfg = (rss_default_cpu & NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD) |
((rss_hash_type & NIC_CFG_RSS_HASH_TYPE_MASK_FIELD)
<< NIC_CFG_RSS_HASH_TYPE_SHIFT) |
((rss_hash_bits & NIC_CFG_RSS_HASH_BITS_MASK_FIELD)
<< NIC_CFG_RSS_HASH_BITS_SHIFT) |
((rss_base_cpu & NIC_CFG_RSS_BASE_CPU_MASK_FIELD)
<< NIC_CFG_RSS_BASE_CPU_SHIFT) |
((rss_enable & NIC_CFG_RSS_ENABLE_MASK_FIELD)
<< NIC_CFG_RSS_ENABLE_SHIFT) |
((tso_ipid_split_en & NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD)
<< NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT) |
((ig_vlan_strip_en & NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD)
<< NIC_CFG_IG_VLAN_STRIP_EN_SHIFT);
}
#endif /* _VNIC_NIC_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_resource.h
+56
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@@ -0,0 +1,56 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_RESOURCE_H_
#define _VNIC_RESOURCE_H_
#define VNIC_RES_MAGIC 0x766E6963L /* 'vnic' */
#define VNIC_RES_VERSION 0x00000000L
/* vNIC resource types */
enum vnic_res_type {
RES_TYPE_EOL, /* End-of-list */
RES_TYPE_WQ, /* Work queues */
RES_TYPE_RQ, /* Receive queues */
RES_TYPE_CQ, /* Completion queues */
RES_TYPE_RSVD1,
RES_TYPE_NIC_CFG, /* Enet NIC config registers */
RES_TYPE_RSVD2,
RES_TYPE_RSVD3,
RES_TYPE_RSVD4,
RES_TYPE_RSVD5,
RES_TYPE_INTR_CTRL, /* Interrupt ctrl table */
RES_TYPE_INTR_TABLE, /* MSI/MSI-X Interrupt table */
RES_TYPE_INTR_PBA, /* MSI/MSI-X PBA table */
RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status */
RES_TYPE_RSVD6,
RES_TYPE_RSVD7,
RES_TYPE_DEVCMD, /* Device command region */
RES_TYPE_PASS_THRU_PAGE, /* Pass-thru page */
RES_TYPE_SUBVNIC, /* subvnic resource type */
RES_TYPE_MQ_WQ, /* MQ Work queues */
RES_TYPE_MQ_RQ, /* MQ Receive queues */
RES_TYPE_MQ_CQ, /* MQ Completion queues */
RES_TYPE_DEPRECATED1, /* Old version of devcmd 2 */
RES_TYPE_DEPRECATED2, /* Old version of devcmd 2 */
RES_TYPE_DEVCMD2, /* Device control region */
RES_TYPE_MAX, /* Count of resource types */
};
struct vnic_resource_header {
u32 magic;
u32 version;
};
struct vnic_resource {
u8 type;
u8 bar;
u8 pad[2];
u32 bar_offset;
u32 count;
};
#endif /* _VNIC_RESOURCE_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_rq.c
+181
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "vnic_dev.h"
#include "vnic_rq.h"
static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
{
struct vnic_rq_buf *buf;
unsigned int i, j, count = rq->ring.desc_count;
unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count);
for (i = 0; i < blks; i++) {
rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC);
if (!rq->bufs[i]) {
printk(KERN_ERR "Failed to alloc rq_bufs\n");
return -ENOMEM;
}
}
for (i = 0; i < blks; i++) {
buf = rq->bufs[i];
for (j = 0; j < VNIC_RQ_BUF_BLK_ENTRIES; j++) {
buf->index = i * VNIC_RQ_BUF_BLK_ENTRIES + j;
buf->desc = (u8 *)rq->ring.descs +
rq->ring.desc_size * buf->index;
if (buf->index + 1 == count) {
buf->next = rq->bufs[0];
break;
} else if (j + 1 == VNIC_RQ_BUF_BLK_ENTRIES) {
buf->next = rq->bufs[i + 1];
} else {
buf->next = buf + 1;
buf++;
}
}
}
rq->to_use = rq->to_clean = rq->bufs[0];
rq->buf_index = 0;
return 0;
}
void vnic_rq_free(struct vnic_rq *rq)
{
struct vnic_dev *vdev;
unsigned int i;
vdev = rq->vdev;
vnic_dev_free_desc_ring(vdev, &rq->ring);
for (i = 0; i < VNIC_RQ_BUF_BLKS_MAX; i++) {
kfree(rq->bufs[i]);
rq->bufs[i] = NULL;
}
rq->ctrl = NULL;
}
int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
unsigned int desc_count, unsigned int desc_size)
{
int err;
rq->index = index;
rq->vdev = vdev;
rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);
if (!rq->ctrl) {
printk(KERN_ERR "Failed to hook RQ[%d] resource\n", index);
return -EINVAL;
}
vnic_rq_disable(rq);
err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);
if (err)
return err;
err = vnic_rq_alloc_bufs(rq);
if (err) {
vnic_rq_free(rq);
return err;
}
return 0;
}
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u64 paddr;
u32 fetch_index;
paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &rq->ctrl->ring_base);
iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size);
iowrite32(cq_index, &rq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
iowrite32(0, &rq->ctrl->dropped_packet_count);
iowrite32(0, &rq->ctrl->error_status);
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
rq->to_use = rq->to_clean =
&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES];
iowrite32(fetch_index, &rq->ctrl->posted_index);
rq->buf_index = 0;
}
unsigned int vnic_rq_error_status(struct vnic_rq *rq)
{
return ioread32(&rq->ctrl->error_status);
}
void vnic_rq_enable(struct vnic_rq *rq)
{
iowrite32(1, &rq->ctrl->enable);
}
int vnic_rq_disable(struct vnic_rq *rq)
{
unsigned int wait;
iowrite32(0, &rq->ctrl->enable);
/* Wait for HW to ACK disable request */
for (wait = 0; wait < 100; wait++) {
if (!(ioread32(&rq->ctrl->running)))
return 0;
udelay(1);
}
printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);
return -ETIMEDOUT;
}
void vnic_rq_clean(struct vnic_rq *rq,
void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))
{
struct vnic_rq_buf *buf;
u32 fetch_index;
WARN_ON(ioread32(&rq->ctrl->enable));
buf = rq->to_clean;
while (vnic_rq_desc_used(rq) > 0) {
(*buf_clean)(rq, buf);
buf = rq->to_clean = buf->next;
rq->ring.desc_avail++;
}
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
rq->to_use = rq->to_clean =
&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES];
iowrite32(fetch_index, &rq->ctrl->posted_index);
rq->buf_index = 0;
vnic_dev_clear_desc_ring(&rq->ring);
}
linux-7.2.3/drivers/scsi/fnic/vnic_rq.h
+223
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_RQ_H_
#define _VNIC_RQ_H_
#include <linux/pci.h>
#include "vnic_dev.h"
#include "vnic_cq.h"
/*
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
* Driver) when both are built with CONFIG options =y
*/
#define vnic_rq_desc_avail fnic_rq_desc_avail
#define vnic_rq_desc_used fnic_rq_desc_used
#define vnic_rq_next_desc fnic_rq_next_desc
#define vnic_rq_next_index fnic_rq_next_index
#define vnic_rq_next_buf_index fnic_rq_next_buf_index
#define vnic_rq_post fnic_rq_post
#define vnic_rq_posting_soon fnic_rq_posting_soon
#define vnic_rq_return_descs fnic_rq_return_descs
#define vnic_rq_service fnic_rq_service
#define vnic_rq_fill fnic_rq_fill
#define vnic_rq_free fnic_rq_free
#define vnic_rq_alloc fnic_rq_alloc
#define vnic_rq_init fnic_rq_init
#define vnic_rq_error_status fnic_rq_error_status
#define vnic_rq_enable fnic_rq_enable
#define vnic_rq_disable fnic_rq_disable
#define vnic_rq_clean fnic_rq_clean
/* Receive queue control */
struct vnic_rq_ctrl {
u64 ring_base; /* 0x00 */
u32 ring_size; /* 0x08 */
u32 pad0;
u32 posted_index; /* 0x10 */
u32 pad1;
u32 cq_index; /* 0x18 */
u32 pad2;
u32 enable; /* 0x20 */
u32 pad3;
u32 running; /* 0x28 */
u32 pad4;
u32 fetch_index; /* 0x30 */
u32 pad5;
u32 error_interrupt_enable; /* 0x38 */
u32 pad6;
u32 error_interrupt_offset; /* 0x40 */
u32 pad7;
u32 error_status; /* 0x48 */
u32 pad8;
u32 dropped_packet_count; /* 0x50 */
u32 pad9;
u32 dropped_packet_count_rc; /* 0x58 */
u32 pad10;
};
/* Break the vnic_rq_buf allocations into blocks of 64 entries */
#define VNIC_RQ_BUF_BLK_ENTRIES 64
#define VNIC_RQ_BUF_BLK_SZ \
(VNIC_RQ_BUF_BLK_ENTRIES * sizeof(struct vnic_rq_buf))
#define VNIC_RQ_BUF_BLKS_NEEDED(entries) \
DIV_ROUND_UP(entries, VNIC_RQ_BUF_BLK_ENTRIES)
#define VNIC_RQ_BUF_BLKS_MAX VNIC_RQ_BUF_BLKS_NEEDED(4096)
struct vnic_rq_buf {
struct vnic_rq_buf *next;
dma_addr_t dma_addr;
void *os_buf;
unsigned int os_buf_index;
unsigned int len;
unsigned int index;
void *desc;
};
struct vnic_rq {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_rq_ctrl __iomem *ctrl; /* memory-mapped */
struct vnic_dev_ring ring;
struct vnic_rq_buf *bufs[VNIC_RQ_BUF_BLKS_MAX];
struct vnic_rq_buf *to_use;
struct vnic_rq_buf *to_clean;
void *os_buf_head;
unsigned int buf_index;
unsigned int pkts_outstanding;
};
static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq)
{
/* how many does SW own? */
return rq->ring.desc_avail;
}
static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq)
{
/* how many does HW own? */
return rq->ring.desc_count - rq->ring.desc_avail - 1;
}
static inline void *vnic_rq_next_desc(struct vnic_rq *rq)
{
return rq->to_use->desc;
}
static inline unsigned int vnic_rq_next_index(struct vnic_rq *rq)
{
return rq->to_use->index;
}
static inline unsigned int vnic_rq_next_buf_index(struct vnic_rq *rq)
{
return rq->buf_index++;
}
static inline void vnic_rq_post(struct vnic_rq *rq,
void *os_buf, unsigned int os_buf_index,
dma_addr_t dma_addr, unsigned int len)
{
struct vnic_rq_buf *buf = rq->to_use;
buf->os_buf = os_buf;
buf->os_buf_index = os_buf_index;
buf->dma_addr = dma_addr;
buf->len = len;
buf = buf->next;
rq->to_use = buf;
rq->ring.desc_avail--;
/* Move the posted_index every nth descriptor
*/
#ifndef VNIC_RQ_RETURN_RATE
#define VNIC_RQ_RETURN_RATE 0xf /* keep 2^n - 1 */
#endif
if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) {
/* Adding write memory barrier prevents compiler and/or CPU
* reordering, thus avoiding descriptor posting before
* descriptor is initialized. Otherwise, hardware can read
* stale descriptor fields.
*/
wmb();
iowrite32(buf->index, &rq->ctrl->posted_index);
}
}
static inline int vnic_rq_posting_soon(struct vnic_rq *rq)
{
return (rq->to_use->index & VNIC_RQ_RETURN_RATE) == 0;
}
static inline void vnic_rq_return_descs(struct vnic_rq *rq, unsigned int count)
{
rq->ring.desc_avail += count;
}
enum desc_return_options {
VNIC_RQ_RETURN_DESC,
VNIC_RQ_DEFER_RETURN_DESC,
};
static inline void vnic_rq_service(struct vnic_rq *rq,
struct cq_desc *cq_desc, u16 completed_index,
int desc_return, void (*buf_service)(struct vnic_rq *rq,
struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
int skipped, void *opaque), void *opaque)
{
struct vnic_rq_buf *buf;
int skipped;
buf = rq->to_clean;
while (1) {
skipped = (buf->index != completed_index);
(*buf_service)(rq, cq_desc, buf, skipped, opaque);
if (desc_return == VNIC_RQ_RETURN_DESC)
rq->ring.desc_avail++;
rq->to_clean = buf->next;
if (!skipped)
break;
buf = rq->to_clean;
}
}
static inline int vnic_rq_fill(struct vnic_rq *rq,
int (*buf_fill)(struct vnic_rq *rq))
{
int err;
while (vnic_rq_desc_avail(rq) > 1) {
err = (*buf_fill)(rq);
if (err)
return err;
}
return 0;
}
void vnic_rq_free(struct vnic_rq *rq);
int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
unsigned int desc_count, unsigned int desc_size);
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset);
unsigned int vnic_rq_error_status(struct vnic_rq *rq);
void vnic_rq_enable(struct vnic_rq *rq);
int vnic_rq_disable(struct vnic_rq *rq);
void vnic_rq_clean(struct vnic_rq *rq,
void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf));
#endif /* _VNIC_RQ_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_scsi.h
+97
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_SCSI_H_
#define _VNIC_SCSI_H_
#define VNIC_FNIC_WQ_COPY_COUNT_MIN 1
#define VNIC_FNIC_WQ_COPY_COUNT_MAX 1
#define VNIC_FNIC_WQ_DESCS_MIN 64
#define VNIC_FNIC_WQ_DESCS_MAX 128
#define VNIC_FNIC_WQ_COPY_DESCS_MIN 64
#define VNIC_FNIC_WQ_COPY_DESCS_MAX 512
#define VNIC_FNIC_RQ_DESCS_MIN 64
#define VNIC_FNIC_RQ_DESCS_MAX 128
#define VNIC_FNIC_EDTOV_MIN 1000
#define VNIC_FNIC_EDTOV_MAX 255000
#define VNIC_FNIC_EDTOV_DEF 2000
#define VNIC_FNIC_RATOV_MIN 1000
#define VNIC_FNIC_RATOV_MAX 255000
#define VNIC_FNIC_MAXDATAFIELDSIZE_MIN 256
#define VNIC_FNIC_MAXDATAFIELDSIZE_MAX 2048
#define VNIC_FNIC_FLOGI_RETRIES_MIN 0
#define VNIC_FNIC_FLOGI_RETRIES_MAX 0xffffffff
#define VNIC_FNIC_FLOGI_RETRIES_DEF 0xffffffff
#define VNIC_FNIC_FLOGI_TIMEOUT_MIN 1000
#define VNIC_FNIC_FLOGI_TIMEOUT_MAX 255000
#define VNIC_FNIC_PLOGI_RETRIES_MIN 0
#define VNIC_FNIC_PLOGI_RETRIES_MAX 255
#define VNIC_FNIC_PLOGI_RETRIES_DEF 8
#define VNIC_FNIC_PLOGI_TIMEOUT_MIN 1000
#define VNIC_FNIC_PLOGI_TIMEOUT_MAX 255000
#define VNIC_FNIC_IO_THROTTLE_COUNT_MIN 1
#define VNIC_FNIC_IO_THROTTLE_COUNT_MAX 2048
#define VNIC_FNIC_LINK_DOWN_TIMEOUT_MIN 0
#define VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX 240000
#define VNIC_FNIC_PORT_DOWN_TIMEOUT_MIN 0
#define VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX 240000
#define VNIC_FNIC_PORT_DOWN_IO_RETRIES_MIN 0
#define VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX 255
#define VNIC_FNIC_LUNS_PER_TARGET_MIN 1
#define VNIC_FNIC_LUNS_PER_TARGET_MAX 4096
/* Device-specific region: scsi configuration */
struct vnic_fc_config {
u64 node_wwn;
u64 port_wwn;
u32 flags;
u32 wq_enet_desc_count;
u32 wq_copy_desc_count;
u32 rq_desc_count;
u32 flogi_retries;
u32 flogi_timeout;
u32 plogi_retries;
u32 plogi_timeout;
u32 io_throttle_count;
u32 link_down_timeout;
u32 port_down_timeout;
u32 port_down_io_retries;
u32 luns_per_tgt;
u16 maxdatafieldsize;
u16 ed_tov;
u16 ra_tov;
u16 intr_timer;
u8 intr_timer_type;
u8 intr_mode;
u8 lun_queue_depth;
u8 io_timeout_retry;
u16 wq_copy_count;
};
#define VFCF_FCP_SEQ_LVL_ERR 0x1 /* Enable FCP-2 Error Recovery */
#define VFCF_PERBI 0x2 /* persistent binding info available */
#define VFCF_FIP_CAPABLE 0x4 /* firmware can handle FIP */
#define VFCF_FC_INITIATOR 0x20 /* FC Initiator Mode */
#define VFCF_FC_TARGET 0x40 /* FC Target Mode */
#define VFCF_FC_NVME_INITIATOR 0x80 /* FC-NVMe Initiator Mode */
#define VFCF_FC_NVME_TARGET 0x100 /* FC-NVMe Target Mode */
#endif /* _VNIC_SCSI_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_stats.h
+56
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@@ -0,0 +1,56 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_STATS_H_
#define _VNIC_STATS_H_
/* Tx statistics */
struct vnic_tx_stats {
u64 tx_frames_ok;
u64 tx_unicast_frames_ok;
u64 tx_multicast_frames_ok;
u64 tx_broadcast_frames_ok;
u64 tx_bytes_ok;
u64 tx_unicast_bytes_ok;
u64 tx_multicast_bytes_ok;
u64 tx_broadcast_bytes_ok;
u64 tx_drops;
u64 tx_errors;
u64 tx_tso;
u64 rsvd[16];
};
/* Rx statistics */
struct vnic_rx_stats {
u64 rx_frames_ok;
u64 rx_frames_total;
u64 rx_unicast_frames_ok;
u64 rx_multicast_frames_ok;
u64 rx_broadcast_frames_ok;
u64 rx_bytes_ok;
u64 rx_unicast_bytes_ok;
u64 rx_multicast_bytes_ok;
u64 rx_broadcast_bytes_ok;
u64 rx_drop;
u64 rx_no_bufs;
u64 rx_errors;
u64 rx_rss;
u64 rx_crc_errors;
u64 rx_frames_64;
u64 rx_frames_127;
u64 rx_frames_255;
u64 rx_frames_511;
u64 rx_frames_1023;
u64 rx_frames_1518;
u64 rx_frames_to_max;
u64 rsvd[16];
};
struct vnic_stats {
struct vnic_tx_stats tx;
struct vnic_rx_stats rx;
};
#endif /* _VNIC_STATS_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_wq.c
+234
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@@ -0,0 +1,234 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "vnic_dev.h"
#include "vnic_wq.h"
static int vnic_wq_get_ctrl(struct vnic_dev *vdev, struct vnic_wq *wq,
unsigned int index, enum vnic_res_type res_type)
{
wq->ctrl = vnic_dev_get_res(vdev, res_type, index);
if (!wq->ctrl)
return -EINVAL;
return 0;
}
static int vnic_wq_alloc_ring(struct vnic_dev *vdev, struct vnic_wq *wq,
unsigned int desc_count, unsigned int desc_size)
{
return vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
}
static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
{
struct vnic_wq_buf *buf;
unsigned int i, j, count = wq->ring.desc_count;
unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count);
for (i = 0; i < blks; i++) {
wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ, GFP_ATOMIC);
if (!wq->bufs[i]) {
printk(KERN_ERR "Failed to alloc wq_bufs\n");
return -ENOMEM;
}
}
for (i = 0; i < blks; i++) {
buf = wq->bufs[i];
for (j = 0; j < VNIC_WQ_BUF_BLK_ENTRIES; j++) {
buf->index = i * VNIC_WQ_BUF_BLK_ENTRIES + j;
buf->desc = (u8 *)wq->ring.descs +
wq->ring.desc_size * buf->index;
if (buf->index + 1 == count) {
buf->next = wq->bufs[0];
break;
} else if (j + 1 == VNIC_WQ_BUF_BLK_ENTRIES) {
buf->next = wq->bufs[i + 1];
} else {
buf->next = buf + 1;
buf++;
}
}
}
wq->to_use = wq->to_clean = wq->bufs[0];
return 0;
}
void vnic_wq_free(struct vnic_wq *wq)
{
struct vnic_dev *vdev;
unsigned int i;
vdev = wq->vdev;
vnic_dev_free_desc_ring(vdev, &wq->ring);
for (i = 0; i < VNIC_WQ_BUF_BLKS_MAX; i++) {
kfree(wq->bufs[i]);
wq->bufs[i] = NULL;
}
wq->ctrl = NULL;
}
int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
unsigned int desc_count, unsigned int desc_size)
{
int err;
wq->index = index;
wq->vdev = vdev;
wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);
if (!wq->ctrl) {
printk(KERN_ERR "Failed to hook WQ[%d] resource\n", index);
return -EINVAL;
}
vnic_wq_disable(wq);
err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
if (err)
return err;
err = vnic_wq_alloc_bufs(wq);
if (err) {
vnic_wq_free(wq);
return err;
}
return 0;
}
int vnic_wq_devcmd2_alloc(struct vnic_dev *vdev, struct vnic_wq *wq,
unsigned int desc_count, unsigned int desc_size)
{
int err;
wq->index = 0;
wq->vdev = vdev;
err = vnic_wq_get_ctrl(vdev, wq, 0, RES_TYPE_DEVCMD2);
if (err) {
pr_err("Failed to get devcmd2 resource\n");
return err;
}
vnic_wq_disable(wq);
err = vnic_wq_alloc_ring(vdev, wq, desc_count, desc_size);
if (err)
return err;
return 0;
}
void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,
unsigned int fetch_index, unsigned int posted_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u64 paddr;
unsigned int count = wq->ring.desc_count;
paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &wq->ctrl->ring_base);
iowrite32(count, &wq->ctrl->ring_size);
iowrite32(fetch_index, &wq->ctrl->fetch_index);
iowrite32(posted_index, &wq->ctrl->posted_index);
iowrite32(cq_index, &wq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
iowrite32(0, &wq->ctrl->error_status);
wq->to_use = wq->to_clean =
&wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES]
[fetch_index % VNIC_WQ_BUF_BLK_ENTRIES];
}
void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u64 paddr;
paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &wq->ctrl->ring_base);
iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size);
iowrite32(0, &wq->ctrl->fetch_index);
iowrite32(0, &wq->ctrl->posted_index);
iowrite32(cq_index, &wq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
iowrite32(0, &wq->ctrl->error_status);
}
unsigned int vnic_wq_error_status(struct vnic_wq *wq)
{
return ioread32(&wq->ctrl->error_status);
}
void vnic_wq_enable(struct vnic_wq *wq)
{
iowrite32(1, &wq->ctrl->enable);
}
int vnic_wq_disable(struct vnic_wq *wq)
{
unsigned int wait;
iowrite32(0, &wq->ctrl->enable);
/* Wait for HW to ACK disable request */
for (wait = 0; wait < 100; wait++) {
if (!(ioread32(&wq->ctrl->running)))
return 0;
udelay(1);
}
printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index);
return -ETIMEDOUT;
}
void vnic_wq_clean(struct vnic_wq *wq,
void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))
{
struct vnic_wq_buf *buf;
BUG_ON(ioread32(&wq->ctrl->enable));
buf = wq->to_clean;
while (vnic_wq_desc_used(wq) > 0) {
(*buf_clean)(wq, buf);
buf = wq->to_clean = buf->next;
wq->ring.desc_avail++;
}
wq->to_use = wq->to_clean = wq->bufs[0];
iowrite32(0, &wq->ctrl->fetch_index);
iowrite32(0, &wq->ctrl->posted_index);
iowrite32(0, &wq->ctrl->error_status);
vnic_dev_clear_desc_ring(&wq->ring);
}
linux-7.2.3/drivers/scsi/fnic/vnic_wq.h
+171
View File
@@ -0,0 +1,171 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_WQ_H_
#define _VNIC_WQ_H_
#include <linux/pci.h>
#include "vnic_dev.h"
#include "vnic_cq.h"
/*
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
* Driver) when both are built with CONFIG options =y
*/
#define vnic_wq_desc_avail fnic_wq_desc_avail
#define vnic_wq_desc_used fnic_wq_desc_used
#define vnic_wq_next_desc fni_cwq_next_desc
#define vnic_wq_post fnic_wq_post
#define vnic_wq_service fnic_wq_service
#define vnic_wq_free fnic_wq_free
#define vnic_wq_alloc fnic_wq_alloc
#define vnic_wq_devcmd2_alloc fnic_wq_devcmd2_alloc
#define vnic_wq_init_start fnic_wq_init_start
#define vnic_wq_init fnic_wq_init
#define vnic_wq_error_status fnic_wq_error_status
#define vnic_wq_enable fnic_wq_enable
#define vnic_wq_disable fnic_wq_disable
#define vnic_wq_clean fnic_wq_clean
/* Work queue control */
struct vnic_wq_ctrl {
u64 ring_base; /* 0x00 */
u32 ring_size; /* 0x08 */
u32 pad0;
u32 posted_index; /* 0x10 */
u32 pad1;
u32 cq_index; /* 0x18 */
u32 pad2;
u32 enable; /* 0x20 */
u32 pad3;
u32 running; /* 0x28 */
u32 pad4;
u32 fetch_index; /* 0x30 */
u32 pad5;
u32 dca_value; /* 0x38 */
u32 pad6;
u32 error_interrupt_enable; /* 0x40 */
u32 pad7;
u32 error_interrupt_offset; /* 0x48 */
u32 pad8;
u32 error_status; /* 0x50 */
u32 pad9;
};
struct vnic_wq_buf {
struct vnic_wq_buf *next;
dma_addr_t dma_addr;
void *os_buf;
unsigned int len;
unsigned int index;
int sop;
void *desc;
};
/* Break the vnic_wq_buf allocations into blocks of 64 entries */
#define VNIC_WQ_BUF_BLK_ENTRIES 64
#define VNIC_WQ_BUF_BLK_SZ \
(VNIC_WQ_BUF_BLK_ENTRIES * sizeof(struct vnic_wq_buf))
#define VNIC_WQ_BUF_BLKS_NEEDED(entries) \
DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES)
#define VNIC_WQ_BUF_BLKS_MAX VNIC_WQ_BUF_BLKS_NEEDED(4096)
struct vnic_wq {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */
struct vnic_dev_ring ring;
struct vnic_wq_buf *bufs[VNIC_WQ_BUF_BLKS_MAX];
struct vnic_wq_buf *to_use;
struct vnic_wq_buf *to_clean;
unsigned int pkts_outstanding;
};
static inline unsigned int vnic_wq_desc_avail(struct vnic_wq *wq)
{
/* how many does SW own? */
return wq->ring.desc_avail;
}
static inline unsigned int vnic_wq_desc_used(struct vnic_wq *wq)
{
/* how many does HW own? */
return wq->ring.desc_count - wq->ring.desc_avail - 1;
}
static inline void *vnic_wq_next_desc(struct vnic_wq *wq)
{
return wq->to_use->desc;
}
static inline void vnic_wq_post(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr,
unsigned int len, int sop, int eop)
{
struct vnic_wq_buf *buf = wq->to_use;
buf->sop = sop;
buf->os_buf = eop ? os_buf : NULL;
buf->dma_addr = dma_addr;
buf->len = len;
buf = buf->next;
if (eop) {
/* Adding write memory barrier prevents compiler and/or CPU
* reordering, thus avoiding descriptor posting before
* descriptor is initialized. Otherwise, hardware can read
* stale descriptor fields.
*/
wmb();
iowrite32(buf->index, &wq->ctrl->posted_index);
}
wq->to_use = buf;
wq->ring.desc_avail--;
}
static inline void vnic_wq_service(struct vnic_wq *wq,
struct cq_desc *cq_desc, u16 completed_index,
void (*buf_service)(struct vnic_wq *wq,
struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque),
void *opaque)
{
struct vnic_wq_buf *buf;
buf = wq->to_clean;
while (1) {
(*buf_service)(wq, cq_desc, buf, opaque);
wq->ring.desc_avail++;
wq->to_clean = buf->next;
if (buf->index == completed_index)
break;
buf = wq->to_clean;
}
}
void vnic_wq_free(struct vnic_wq *wq);
int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
unsigned int desc_count, unsigned int desc_size);
int vnic_wq_devcmd2_alloc(struct vnic_dev *vdev, struct vnic_wq *wq,
unsigned int desc_count, unsigned int desc_size);
void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,
unsigned int fetch_index, unsigned int posted_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset);
void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset);
unsigned int vnic_wq_error_status(struct vnic_wq *wq);
void vnic_wq_enable(struct vnic_wq *wq);
int vnic_wq_disable(struct vnic_wq *wq);
void vnic_wq_clean(struct vnic_wq *wq,
void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf));
#endif /* _VNIC_WQ_H_ */
linux-7.2.3/drivers/scsi/fnic/vnic_wq_copy.c
+98
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@@ -0,0 +1,98 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include "vnic_wq_copy.h"
void vnic_wq_copy_enable(struct vnic_wq_copy *wq)
{
iowrite32(1, &wq->ctrl->enable);
}
int vnic_wq_copy_disable(struct vnic_wq_copy *wq)
{
unsigned int wait;
iowrite32(0, &wq->ctrl->enable);
/* Wait for HW to ACK disable request */
for (wait = 0; wait < 100; wait++) {
if (!(ioread32(&wq->ctrl->running)))
return 0;
udelay(1);
}
printk(KERN_ERR "Failed to disable Copy WQ[%d],"
" fetch index=%d, posted_index=%d\n",
wq->index, ioread32(&wq->ctrl->fetch_index),
ioread32(&wq->ctrl->posted_index));
return -ENODEV;
}
void vnic_wq_copy_clean(struct vnic_wq_copy *wq,
void (*q_clean)(struct vnic_wq_copy *wq,
struct fcpio_host_req *wq_desc))
{
BUG_ON(ioread32(&wq->ctrl->enable));
if (vnic_wq_copy_desc_in_use(wq))
vnic_wq_copy_service(wq, -1, q_clean);
wq->to_use_index = wq->to_clean_index = 0;
iowrite32(0, &wq->ctrl->fetch_index);
iowrite32(0, &wq->ctrl->posted_index);
iowrite32(0, &wq->ctrl->error_status);
vnic_dev_clear_desc_ring(&wq->ring);
}
void vnic_wq_copy_free(struct vnic_wq_copy *wq)
{
struct vnic_dev *vdev;
vdev = wq->vdev;
vnic_dev_free_desc_ring(vdev, &wq->ring);
wq->ctrl = NULL;
}
int vnic_wq_copy_alloc(struct vnic_dev *vdev, struct vnic_wq_copy *wq,
unsigned int index, unsigned int desc_count,
unsigned int desc_size)
{
wq->index = index;
wq->vdev = vdev;
wq->to_use_index = wq->to_clean_index = 0;
wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);
if (!wq->ctrl) {
printk(KERN_ERR "Failed to hook COPY WQ[%d] resource\n", index);
return -EINVAL;
}
vnic_wq_copy_disable(wq);
return vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
}
void vnic_wq_copy_init(struct vnic_wq_copy *wq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u64 paddr;
paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &wq->ctrl->ring_base);
iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size);
iowrite32(0, &wq->ctrl->fetch_index);
iowrite32(0, &wq->ctrl->posted_index);
iowrite32(cq_index, &wq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
}
linux-7.2.3/drivers/scsi/fnic/vnic_wq_copy.h
+116
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@@ -0,0 +1,116 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _VNIC_WQ_COPY_H_
#define _VNIC_WQ_COPY_H_
#include <linux/pci.h>
#include "vnic_wq.h"
#include "fcpio.h"
#define VNIC_WQ_COPY_MAX 1
struct vnic_wq_copy {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */
struct vnic_dev_ring ring;
unsigned to_use_index;
unsigned to_clean_index;
};
static inline unsigned int vnic_wq_copy_desc_avail(struct vnic_wq_copy *wq)
{
return wq->ring.desc_avail;
}
static inline unsigned int vnic_wq_copy_desc_in_use(struct vnic_wq_copy *wq)
{
return wq->ring.desc_count - 1 - wq->ring.desc_avail;
}
static inline void *vnic_wq_copy_next_desc(struct vnic_wq_copy *wq)
{
struct fcpio_host_req *desc = wq->ring.descs;
return &desc[wq->to_use_index];
}
static inline void vnic_wq_copy_post(struct vnic_wq_copy *wq)
{
((wq->to_use_index + 1) == wq->ring.desc_count) ?
(wq->to_use_index = 0) : (wq->to_use_index++);
wq->ring.desc_avail--;
/* Adding write memory barrier prevents compiler and/or CPU
* reordering, thus avoiding descriptor posting before
* descriptor is initialized. Otherwise, hardware can read
* stale descriptor fields.
*/
wmb();
iowrite32(wq->to_use_index, &wq->ctrl->posted_index);
}
static inline void vnic_wq_copy_desc_process(struct vnic_wq_copy *wq, u16 index)
{
unsigned int cnt;
if (wq->to_clean_index <= index)
cnt = (index - wq->to_clean_index) + 1;
else
cnt = wq->ring.desc_count - wq->to_clean_index + index + 1;
wq->to_clean_index = ((index + 1) % wq->ring.desc_count);
wq->ring.desc_avail += cnt;
}
static inline void vnic_wq_copy_service(struct vnic_wq_copy *wq,
u16 completed_index,
void (*q_service)(struct vnic_wq_copy *wq,
struct fcpio_host_req *wq_desc))
{
struct fcpio_host_req *wq_desc = wq->ring.descs;
unsigned int curr_index;
while (1) {
if (q_service)
(*q_service)(wq, &wq_desc[wq->to_clean_index]);
wq->ring.desc_avail++;
curr_index = wq->to_clean_index;
/* increment the to-clean index so that we start
* with an unprocessed index next time we enter the loop
*/
((wq->to_clean_index + 1) == wq->ring.desc_count) ?
(wq->to_clean_index = 0) : (wq->to_clean_index++);
if (curr_index == completed_index)
break;
/* we have cleaned all the entries */
if ((completed_index == (u16)-1) &&
(wq->to_clean_index == wq->to_use_index))
break;
}
}
void vnic_wq_copy_enable(struct vnic_wq_copy *wq);
int vnic_wq_copy_disable(struct vnic_wq_copy *wq);
void vnic_wq_copy_free(struct vnic_wq_copy *wq);
int vnic_wq_copy_alloc(struct vnic_dev *vdev, struct vnic_wq_copy *wq,
unsigned int index, unsigned int desc_count, unsigned int desc_size);
void vnic_wq_copy_init(struct vnic_wq_copy *wq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset);
void vnic_wq_copy_clean(struct vnic_wq_copy *wq,
void (*q_clean)(struct vnic_wq_copy *wq,
struct fcpio_host_req *wq_desc));
#endif /* _VNIC_WQ_COPY_H_ */
linux-7.2.3/drivers/scsi/fnic/wq_enet_desc.h
+84
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@@ -0,0 +1,84 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#ifndef _WQ_ENET_DESC_H_
#define _WQ_ENET_DESC_H_
/* Ethernet work queue descriptor: 16B */
struct wq_enet_desc {
__le64 address;
__le16 length;
__le16 mss_loopback;
__le16 header_length_flags;
__le16 vlan_tag;
};
#define WQ_ENET_ADDR_BITS 64
#define WQ_ENET_LEN_BITS 14
#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)
#define WQ_ENET_MSS_BITS 14
#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)
#define WQ_ENET_MSS_SHIFT 2
#define WQ_ENET_LOOPBACK_SHIFT 1
#define WQ_ENET_HDRLEN_BITS 10
#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)
#define WQ_ENET_FLAGS_OM_BITS 2
#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
#define WQ_ENET_FLAGS_EOP_SHIFT 12
#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13
#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15
#define WQ_ENET_OFFLOAD_MODE_CSUM 0
#define WQ_ENET_OFFLOAD_MODE_RESERVED 1
#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2
#define WQ_ENET_OFFLOAD_MODE_TSO 3
static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,
u64 address, u16 length, u16 mss, u16 header_length,
u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,
u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)
{
desc->address = cpu_to_le64(address);
desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);
desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<
WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
desc->header_length_flags = cpu_to_le16(
(header_length & WQ_ENET_HDRLEN_MASK) |
(offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
(eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
(cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
(fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
(vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
desc->vlan_tag = cpu_to_le16(vlan_tag);
}
static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,
u64 *address, u16 *length, u16 *mss, u16 *header_length,
u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,
u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)
{
*address = le64_to_cpu(desc->address);
*length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;
*mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
WQ_ENET_MSS_MASK;
*loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>
WQ_ENET_LOOPBACK_SHIFT) & 1);
*header_length = le16_to_cpu(desc->header_length_flags) &
WQ_ENET_HDRLEN_MASK;
*offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
*eop = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_EOP_SHIFT) & 1);
*cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
*fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
*vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
*vlan_tag = le16_to_cpu(desc->vlan_tag);
}
#endif /* _WQ_ENET_DESC_H_ */