Resguardo inicial

linux-7.2.3/drivers/scsi/be2iscsi/Kconfig

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config BE2ISCSI
+	tristate "Emulex 10Gbps iSCSI - BladeEngine 2"
+	depends on PCI && SCSI && NET
+	select SCSI_ISCSI_ATTRS
+	select ISCSI_BOOT_SYSFS
+	select IRQ_POLL
+
+	help
+	This driver implements the iSCSI functionality for Emulex
+	10Gbps Storage adapter - BladeEngine 2.

linux-7.2.3/drivers/scsi/be2iscsi/Makefile

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile to build the iSCSI driver for Emulex OneConnect.
+#
+#
+
+obj-$(CONFIG_BE2ISCSI) += be2iscsi.o
+
+be2iscsi-y := be_iscsi.o be_main.o be_mgmt.o be_cmds.o

linux-7.2.3/drivers/scsi/be2iscsi/be.h

@@ -0,0 +1,205 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2017 Broadcom. All Rights Reserved.
+ * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
+ *
+ * Contact Information:
+ * linux-drivers@broadcom.com
+ */
+
+#ifndef BEISCSI_H
+#define BEISCSI_H
+
+#include <linux/pci.h>
+#include <linux/if_vlan.h>
+#include <linux/irq_poll.h>
+#define FW_VER_LEN	32
+#define MCC_Q_LEN	128
+#define MCC_CQ_LEN	256
+#define MAX_MCC_CMD	16
+/* BladeEngine Generation numbers */
+#define BE_GEN2 2
+#define BE_GEN3 3
+#define BE_GEN4	4
+struct be_dma_mem {
+	void *va;
+	dma_addr_t dma;
+	u32 size;
+};
+
+struct be_queue_info {
+	struct be_dma_mem dma_mem;
+	u16 len;
+	u16 entry_size;		/* Size of an element in the queue */
+	u16 id;
+	u16 tail, head;
+	bool created;
+	u16 used;		/* Number of valid elements in the queue */
+};
+
+static inline u32 MODULO(u16 val, u16 limit)
+{
+	WARN_ON(limit & (limit - 1));
+	return val & (limit - 1);
+}
+
+static inline void index_inc(u16 *index, u16 limit)
+{
+	*index = MODULO((*index + 1), limit);
+}
+
+static inline void *queue_head_node(struct be_queue_info *q)
+{
+	return q->dma_mem.va + q->head * q->entry_size;
+}
+
+static inline void *queue_get_wrb(struct be_queue_info *q, unsigned int wrb_num)
+{
+	return q->dma_mem.va + wrb_num * q->entry_size;
+}
+
+static inline void *queue_tail_node(struct be_queue_info *q)
+{
+	return q->dma_mem.va + q->tail * q->entry_size;
+}
+
+static inline void queue_head_inc(struct be_queue_info *q)
+{
+	index_inc(&q->head, q->len);
+}
+
+static inline void queue_tail_inc(struct be_queue_info *q)
+{
+	index_inc(&q->tail, q->len);
+}
+
+/*ISCSI */
+
+struct be_aic_obj {		/* Adaptive interrupt coalescing (AIC) info */
+	unsigned long jiffies;
+	u32 eq_prev;		/* Used to calculate eqe */
+	u32 prev_eqd;
+#define BEISCSI_EQ_DELAY_MIN	0
+#define BEISCSI_EQ_DELAY_DEF	32
+#define BEISCSI_EQ_DELAY_MAX	128
+};
+
+struct be_eq_obj {
+	u32 cq_count;
+	struct be_queue_info q;
+	struct beiscsi_hba *phba;
+	struct be_queue_info *cq;
+	struct work_struct mcc_work; /* Work Item */
+	struct irq_poll	iopoll;
+};
+
+struct be_mcc_obj {
+	struct be_queue_info q;
+	struct be_queue_info cq;
+};
+
+struct beiscsi_mcc_tag_state {
+	unsigned long tag_state;
+#define MCC_TAG_STATE_RUNNING	0
+#define MCC_TAG_STATE_TIMEOUT	1
+#define MCC_TAG_STATE_ASYNC	2
+#define MCC_TAG_STATE_IGNORE	3
+	void (*cbfn)(struct beiscsi_hba *, unsigned int);
+	struct be_dma_mem tag_mem_state;
+};
+
+struct be_ctrl_info {
+	u8 __iomem *csr;
+	u8 __iomem *db;		/* Door Bell */
+	u8 __iomem *pcicfg;	/* PCI config space */
+	struct pci_dev *pdev;
+
+	/* Mbox used for cmd request/response */
+	struct mutex mbox_lock;	/* For serializing mbox cmds to BE card */
+	struct be_dma_mem mbox_mem;
+	/* Mbox mem is adjusted to align to 16 bytes. The allocated addr
+	 * is stored for freeing purpose */
+	struct be_dma_mem mbox_mem_alloced;
+
+	/* MCC Rings */
+	struct be_mcc_obj mcc_obj;
+	spinlock_t mcc_lock;	/* For serializing mcc cmds to BE card */
+
+	wait_queue_head_t mcc_wait[MAX_MCC_CMD + 1];
+	unsigned int mcc_tag[MAX_MCC_CMD];
+	unsigned int mcc_tag_status[MAX_MCC_CMD + 1];
+	unsigned short mcc_alloc_index;
+	unsigned short mcc_free_index;
+	unsigned int mcc_tag_available;
+
+	struct beiscsi_mcc_tag_state ptag_state[MAX_MCC_CMD + 1];
+};
+
+#include "be_cmds.h"
+
+/* WRB index mask for MCC_Q_LEN queue entries */
+#define MCC_Q_WRB_IDX_MASK	CQE_STATUS_WRB_MASK
+#define MCC_Q_WRB_IDX_SHIFT	CQE_STATUS_WRB_SHIFT
+/* TAG is from 1...MAX_MCC_CMD, MASK includes MAX_MCC_CMD */
+#define MCC_Q_CMD_TAG_MASK	((MAX_MCC_CMD << 1) - 1)
+
+#define PAGE_SHIFT_4K		12
+#define PAGE_SIZE_4K		(1 << PAGE_SHIFT_4K)
+
+/* Returns number of pages spanned by the data starting at the given addr */
+#define PAGES_4K_SPANNED(_address, size)				\
+		((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) +	\
+			(size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
+
+/* Returns bit offset within a DWORD of a bitfield */
+#define AMAP_BIT_OFFSET(_struct, field)					\
+		(((size_t)&(((_struct *)0)->field))%32)
+
+/* Returns the bit mask of the field that is NOT shifted into location. */
+static inline u32 amap_mask(u32 bitsize)
+{
+	return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
+}
+
+static inline void amap_set(void *ptr, u32 dw_offset, u32 mask,
+					u32 offset, u32 value)
+{
+	u32 *dw = (u32 *) ptr + dw_offset;
+	*dw &= ~(mask << offset);
+	*dw |= (mask & value) << offset;
+}
+
+#define AMAP_SET_BITS(_struct, field, ptr, val)				\
+		amap_set(ptr,						\
+			offsetof(_struct, field)/32,			\
+			amap_mask(sizeof(((_struct *)0)->field)),	\
+			AMAP_BIT_OFFSET(_struct, field),		\
+			val)
+
+static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
+{
+	u32 *dw = ptr;
+	return mask & (*(dw + dw_offset) >> offset);
+}
+
+#define AMAP_GET_BITS(_struct, field, ptr)				\
+		amap_get(ptr,						\
+			offsetof(_struct, field)/32,			\
+			amap_mask(sizeof(((_struct *)0)->field)),	\
+			AMAP_BIT_OFFSET(_struct, field))
+
+#define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
+#define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
+static inline void swap_dws(void *wrb, int len)
+{
+#ifdef __BIG_ENDIAN
+	u32 *dw = wrb;
+	WARN_ON(len % 4);
+	do {
+		*dw = cpu_to_le32(*dw);
+		dw++;
+		len -= 4;
+	} while (len);
+#endif /* __BIG_ENDIAN */
+}
+#endif /* BEISCSI_H */

linux-7.2.3/drivers/scsi/be2iscsi/be_iscsi.h

@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2017 Broadcom. All Rights Reserved.
+ * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
+ *
+ * Contact Information:
+ * linux-drivers@broadcom.com
+ */
+
+#ifndef _BE_ISCSI_
+#define _BE_ISCSI_
+
+#include "be_main.h"
+#include "be_mgmt.h"
+
+void beiscsi_iface_create_default(struct beiscsi_hba *phba);
+
+void beiscsi_iface_destroy_default(struct beiscsi_hba *phba);
+
+int beiscsi_iface_get_param(struct iscsi_iface *iface,
+			     enum iscsi_param_type param_type,
+			     int param, char *buf);
+
+int beiscsi_iface_set_param(struct Scsi_Host *shost,
+			     void *data, uint32_t count);
+
+umode_t beiscsi_attr_is_visible(int param_type, int param);
+
+void beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
+				struct beiscsi_offload_params *params);
+
+void beiscsi_offload_iscsi(struct beiscsi_hba *phba, struct iscsi_conn *conn,
+			   struct beiscsi_conn *beiscsi_conn,
+			   unsigned int fw_handle);
+
+struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
+						 uint16_t cmds_max,
+						 uint16_t qdepth,
+						 uint32_t initial_cmdsn);
+
+void beiscsi_session_destroy(struct iscsi_cls_session *cls_session);
+
+void beiscsi_session_fail(struct iscsi_cls_session *cls_session);
+
+struct iscsi_cls_conn *beiscsi_conn_create(struct iscsi_cls_session
+					   *cls_session, uint32_t cid);
+
+int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
+		      struct iscsi_cls_conn *cls_conn,
+		      uint64_t transport_fd, int is_leading);
+
+int beiscsi_ep_get_param(struct iscsi_endpoint *ep, enum iscsi_param param,
+			 char *buf);
+
+int beiscsi_get_host_param(struct Scsi_Host *shost,
+			   enum iscsi_host_param param, char *buf);
+
+int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba);
+
+int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
+		      enum iscsi_param param, char *buf, int buflen);
+
+int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn);
+
+struct iscsi_endpoint *beiscsi_ep_connect(struct Scsi_Host *shost,
+					  struct sockaddr *dst_addr,
+					  int non_blocking);
+
+int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
+
+void beiscsi_ep_disconnect(struct iscsi_endpoint *ep);
+
+void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
+			    struct iscsi_stats *stats);
+
+#endif

linux-7.2.3/drivers/scsi/be2iscsi/be_mgmt.h

@@ -0,0 +1,242 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2017 Broadcom. All Rights Reserved.
+ * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
+ *
+ * Contact Information:
+ * linux-drivers@broadcom.com
+ */
+
+#ifndef _BEISCSI_MGMT_
+#define _BEISCSI_MGMT_
+
+#include <scsi/scsi_bsg_iscsi.h>
+#include "be_iscsi.h"
+#include "be_main.h"
+
+#define IP_ACTION_ADD	0x01
+#define IP_ACTION_DEL	0x02
+
+#define IP_V6_LEN	16
+#define IP_V4_LEN	4
+
+/* UE Status and Mask register */
+#define PCICFG_UE_STATUS_LOW            0xA0
+#define PCICFG_UE_STATUS_HIGH           0xA4
+#define PCICFG_UE_STATUS_MASK_LOW       0xA8
+#define PCICFG_UE_STATUS_MASK_HI        0xAC
+
+int mgmt_open_connection(struct beiscsi_hba *phba,
+			 struct sockaddr *dst_addr,
+			 struct beiscsi_endpoint *beiscsi_ep,
+			 struct be_dma_mem *nonemb_cmd);
+
+unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
+					 struct beiscsi_hba *phba,
+					 struct bsg_job *job,
+					 struct be_dma_mem *nonemb_cmd);
+
+#define BE_INVLDT_CMD_TBL_SZ	128
+struct invldt_cmd_tbl {
+	unsigned short icd;
+	unsigned short cid;
+} __packed;
+
+struct invldt_cmds_params_in {
+	struct be_cmd_req_hdr hdr;
+	unsigned int ref_handle;
+	unsigned int icd_count;
+	struct invldt_cmd_tbl table[BE_INVLDT_CMD_TBL_SZ];
+	unsigned short cleanup_type;
+	unsigned short unused;
+} __packed;
+
+struct invldt_cmds_params_out {
+	struct be_cmd_resp_hdr hdr;
+	unsigned int ref_handle;
+	unsigned int icd_count;
+	unsigned int icd_status[BE_INVLDT_CMD_TBL_SZ];
+} __packed;
+
+union be_invldt_cmds_params {
+	struct invldt_cmds_params_in request;
+	struct invldt_cmds_params_out response;
+} __packed;
+
+struct mgmt_hba_attributes {
+	u8 flashrom_version_string[BEISCSI_VER_STRLEN];
+	u8 manufacturer_name[BEISCSI_VER_STRLEN];
+	u32 supported_modes;
+	u8 seeprom_version_lo;
+	u8 seeprom_version_hi;
+	u8 rsvd0[2];
+	u32 fw_cmd_data_struct_version;
+	u32 ep_fw_data_struct_version;
+	u8 ncsi_version_string[12];
+	u32 default_extended_timeout;
+	u8 controller_model_number[BEISCSI_VER_STRLEN];
+	u8 controller_description[64];
+	u8 controller_serial_number[BEISCSI_VER_STRLEN];
+	u8 ip_version_string[BEISCSI_VER_STRLEN];
+	u8 firmware_version_string[BEISCSI_VER_STRLEN];
+	u8 bios_version_string[BEISCSI_VER_STRLEN];
+	u8 redboot_version_string[BEISCSI_VER_STRLEN];
+	u8 driver_version_string[BEISCSI_VER_STRLEN];
+	u8 fw_on_flash_version_string[BEISCSI_VER_STRLEN];
+	u32 functionalities_supported;
+	u16 max_cdblength;
+	u8 asic_revision;
+	u8 generational_guid[16];
+	u8 hba_port_count;
+	u16 default_link_down_timeout;
+	u8 iscsi_ver_min_max;
+	u8 multifunction_device;
+	u8 cache_valid;
+	u8 hba_status;
+	u8 max_domains_supported;
+	u8 phy_port;
+	u32 firmware_post_status;
+	u32 hba_mtu[8];
+	u8 iscsi_features;
+	u8 asic_generation;
+	u8 future_u8[2];
+	u32 future_u32[3];
+} __packed;
+
+struct mgmt_controller_attributes {
+	struct mgmt_hba_attributes hba_attribs;
+	u16 pci_vendor_id;
+	u16 pci_device_id;
+	u16 pci_sub_vendor_id;
+	u16 pci_sub_system_id;
+	u8 pci_bus_number;
+	u8 pci_device_number;
+	u8 pci_function_number;
+	u8 interface_type;
+	u64 unique_identifier;
+	u8 netfilters;
+	u8 rsvd0[3];
+	u32 future_u32[4];
+} __packed;
+
+struct be_mgmt_controller_attributes {
+	struct be_cmd_req_hdr hdr;
+	struct mgmt_controller_attributes params;
+} __packed;
+
+struct be_mgmt_controller_attributes_resp {
+	struct be_cmd_resp_hdr hdr;
+	struct mgmt_controller_attributes params;
+} __packed;
+
+struct be_bsg_vendor_cmd {
+	struct be_cmd_req_hdr hdr;
+	unsigned short region;
+	unsigned short offset;
+	unsigned short sector;
+} __packed;
+
+/* configuration management */
+
+#define GET_MGMT_CONTROLLER_WS(phba)    (phba->pmgmt_ws)
+
+#define ISCSI_GET_PDU_TEMPLATE_ADDRESS(pc, pa) {\
+	pa->lo = phba->init_mem[ISCSI_MEM_GLOBAL_HEADER].mem_array[0].\
+					bus_address.u.a32.address_lo;  \
+	pa->hi = phba->init_mem[ISCSI_MEM_GLOBAL_HEADER].mem_array[0].\
+					bus_address.u.a32.address_hi;  \
+}
+
+#define BEISCSI_WRITE_FLASH 0
+#define BEISCSI_READ_FLASH 1
+
+struct beiscsi_endpoint {
+	struct beiscsi_hba *phba;
+	struct beiscsi_conn *conn;
+	struct iscsi_endpoint *openiscsi_ep;
+	unsigned short ip_type;
+	char dst6_addr[ISCSI_ADDRESS_BUF_LEN];
+	unsigned long dst_addr;
+	unsigned short ep_cid;
+	unsigned int fw_handle;
+	u16 dst_tcpport;
+	u16 cid_vld;
+};
+
+int beiscsi_mgmt_invalidate_icds(struct beiscsi_hba *phba,
+				 struct invldt_cmd_tbl *inv_tbl,
+				 unsigned int nents);
+
+int beiscsi_get_initiator_name(struct beiscsi_hba *phba, char *name, bool cfg);
+
+int beiscsi_if_en_dhcp(struct beiscsi_hba *phba, u32 ip_type);
+
+int beiscsi_if_en_static(struct beiscsi_hba *phba, u32 ip_type,
+			 u8 *ip, u8 *subnet);
+
+int beiscsi_if_set_gw(struct beiscsi_hba *phba, u32 ip_type, u8 *gw);
+
+int beiscsi_if_get_gw(struct beiscsi_hba *phba, u32 ip_type,
+		      struct be_cmd_get_def_gateway_resp *resp);
+
+int mgmt_get_nic_conf(struct beiscsi_hba *phba,
+		      struct be_cmd_get_nic_conf_resp *mac);
+
+int beiscsi_if_get_info(struct beiscsi_hba *phba, int ip_type,
+			struct be_cmd_get_if_info_resp **if_info);
+
+unsigned int beiscsi_if_get_handle(struct beiscsi_hba *phba);
+
+int beiscsi_if_set_vlan(struct beiscsi_hba *phba, uint16_t vlan_tag);
+
+unsigned int beiscsi_boot_logout_sess(struct beiscsi_hba *phba);
+
+unsigned int beiscsi_boot_reopen_sess(struct beiscsi_hba *phba);
+
+unsigned int beiscsi_boot_get_sinfo(struct beiscsi_hba *phba);
+
+unsigned int __beiscsi_boot_get_shandle(struct beiscsi_hba *phba, int async);
+
+int beiscsi_boot_get_shandle(struct beiscsi_hba *phba, unsigned int *s_handle);
+
+ssize_t beiscsi_drvr_ver_disp(struct device *dev,
+			       struct device_attribute *attr, char *buf);
+
+ssize_t beiscsi_fw_ver_disp(struct device *dev,
+			     struct device_attribute *attr, char *buf);
+
+ssize_t beiscsi_active_session_disp(struct device *dev,
+				     struct device_attribute *attr, char *buf);
+
+ssize_t beiscsi_adap_family_disp(struct device *dev,
+				  struct device_attribute *attr, char *buf);
+
+
+ssize_t beiscsi_free_session_disp(struct device *dev,
+				   struct device_attribute *attr, char *buf);
+
+ssize_t beiscsi_phys_port_disp(struct device *dev,
+				struct device_attribute *attr, char *buf);
+
+void beiscsi_offload_cxn_v0(struct beiscsi_offload_params *params,
+			     struct wrb_handle *pwrb_handle,
+			     struct be_mem_descriptor *mem_descr,
+			     struct hwi_wrb_context *pwrb_context);
+
+void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
+			     struct wrb_handle *pwrb_handle,
+			     struct hwi_wrb_context *pwrb_context);
+
+unsigned int beiscsi_invalidate_cxn(struct beiscsi_hba *phba,
+				    struct beiscsi_endpoint *beiscsi_ep);
+
+unsigned int beiscsi_upload_cxn(struct beiscsi_hba *phba,
+				struct beiscsi_endpoint *beiscsi_ep);
+
+int be_cmd_modify_eq_delay(struct beiscsi_hba *phba,
+			 struct be_set_eqd *, int num);
+
+int beiscsi_logout_fw_sess(struct beiscsi_hba *phba,
+			    uint32_t fw_sess_handle);
+
+#endif