Resguardo inicial

linux-7.2.3/drivers/ssb/Kconfig

@@ -0,0 +1,168 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config SSB_POSSIBLE
+	bool
+	depends on HAS_IOMEM && HAS_DMA
+	default y
+
+menuconfig SSB
+	tristate "Sonics Silicon Backplane support"
+	depends on SSB_POSSIBLE
+	help
+	  Support for the Sonics Silicon Backplane bus.
+	  You only need to enable this option, if you are
+	  configuring a kernel for an embedded system with
+	  this bus.
+	  It will be auto-selected if needed in other
+	  environments.
+
+	  The module will be called ssb.
+
+	  If unsure, say N.
+
+if SSB
+
+# Common SPROM support routines
+config SSB_SPROM
+	bool
+
+# Support for Block-I/O. SELECT this from the driver that needs it.
+config SSB_BLOCKIO
+	bool
+	depends on SSB
+
+config SSB_PCIHOST_POSSIBLE
+	bool
+	depends on SSB && (PCI = y || PCI = SSB) && (PCI_DRIVERS_LEGACY || !MIPS)
+	default y
+
+config SSB_PCIHOST
+	bool "Support for SSB on PCI-bus host"
+	depends on SSB_PCIHOST_POSSIBLE
+	select SSB_SPROM
+	default y
+	help
+	  Support for a Sonics Silicon Backplane on top
+	  of a PCI device.
+
+	  If unsure, say Y
+
+config SSB_B43_PCI_BRIDGE
+	bool
+	depends on SSB_PCIHOST
+	default n
+
+config SSB_PCMCIAHOST_POSSIBLE
+	bool
+	depends on SSB && (PCMCIA = y || PCMCIA = SSB)
+	default y
+
+config SSB_PCMCIAHOST
+	bool "Support for SSB on PCMCIA-bus host"
+	depends on SSB_PCMCIAHOST_POSSIBLE
+	select SSB_SPROM
+	help
+	  Support for a Sonics Silicon Backplane on top
+	  of a PCMCIA device.
+
+	  If unsure, say N
+
+config SSB_SDIOHOST_POSSIBLE
+	bool
+	depends on SSB && (MMC = y || MMC = SSB)
+	default y
+
+config SSB_SDIOHOST
+	bool "Support for SSB on SDIO-bus host"
+	depends on SSB_SDIOHOST_POSSIBLE
+	help
+	  Support for a Sonics Silicon Backplane on top
+	  of a SDIO device.
+
+	  If unsure, say N
+
+config SSB_HOST_SOC
+	bool "Support for SSB bus on SoC"
+	depends on SSB && BCM47XX_NVRAM
+	select SSB_SPROM
+	help
+	  Host interface for a SSB directly mapped into memory. This is
+	  for some Broadcom SoCs from the BCM47xx and BCM53xx lines.
+
+	  If unsure, say N
+
+config SSB_SERIAL
+	bool
+	depends on SSB
+	# ChipCommon and ExtIf serial support routines.
+
+config SSB_DRIVER_PCICORE_POSSIBLE
+	bool
+	depends on SSB_PCIHOST
+	default y
+
+config SSB_DRIVER_PCICORE
+	bool "SSB PCI core driver"
+	depends on SSB_DRIVER_PCICORE_POSSIBLE
+	help
+	  Driver for the Sonics Silicon Backplane attached
+	  Broadcom PCI core.
+
+	  If unsure, say Y
+
+config SSB_PCICORE_HOSTMODE
+	bool "Hostmode support for SSB PCI core"
+	depends on SSB_DRIVER_PCICORE && SSB_DRIVER_MIPS && SSB = y
+	help
+	  PCIcore hostmode operation (external PCI bus).
+
+config SSB_DRIVER_MIPS
+	bool "SSB Broadcom MIPS core driver"
+	depends on SSB && MIPS
+	select SSB_SERIAL
+	select SSB_SFLASH
+	help
+	  Driver for the Sonics Silicon Backplane attached
+	  Broadcom MIPS core.
+
+	  If unsure, say N
+
+config SSB_SFLASH
+	bool "SSB serial flash support"
+	depends on SSB_DRIVER_MIPS
+	default y
+
+# Assumption: We are on embedded, if we compile the MIPS core.
+config SSB_EMBEDDED
+	bool
+	depends on SSB_DRIVER_MIPS
+	depends on PCI=n || SSB_PCICORE_HOSTMODE
+	default y
+
+config SSB_DRIVER_EXTIF
+	bool "SSB Broadcom EXTIF core driver"
+	depends on SSB_DRIVER_MIPS
+	help
+	  Driver for the Sonics Silicon Backplane attached
+	  Broadcom EXTIF core.
+
+	  If unsure, say N
+
+config SSB_DRIVER_GIGE
+	bool "SSB Broadcom Gigabit Ethernet driver"
+	depends on SSB_PCIHOST_POSSIBLE && SSB_EMBEDDED && MIPS
+	help
+	  Driver for the Sonics Silicon Backplane attached
+	  Broadcom Gigabit Ethernet.
+
+	  If unsure, say N
+
+config SSB_DRIVER_GPIO
+	bool "SSB GPIO driver"
+	depends on SSB && GPIOLIB
+	select IRQ_DOMAIN if SSB_EMBEDDED
+	help
+	  Driver to provide access to the GPIO pins on the bus.
+
+	  If unsure, say N
+
+endif # SSB

linux-7.2.3/drivers/ssb/Makefile

@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+# core
+ssb-y					+= main.o scan.o
+ssb-$(CONFIG_SSB_EMBEDDED)		+= embedded.o
+ssb-$(CONFIG_SSB_SPROM)			+= sprom.o
+
+# host support
+ssb-$(CONFIG_SSB_PCIHOST)		+= pci.o pcihost_wrapper.o
+ssb-$(CONFIG_SSB_PCMCIAHOST)		+= pcmcia.o bridge_pcmcia_80211.o
+ssb-$(CONFIG_SSB_SDIOHOST)		+= sdio.o
+ssb-$(CONFIG_SSB_HOST_SOC)		+= host_soc.o
+
+# built-in drivers
+ssb-y					+= driver_chipcommon.o
+ssb-y					+= driver_chipcommon_pmu.o
+ssb-$(CONFIG_SSB_SFLASH)		+= driver_chipcommon_sflash.o
+ssb-$(CONFIG_SSB_DRIVER_MIPS)		+= driver_mipscore.o
+ssb-$(CONFIG_SSB_DRIVER_EXTIF)		+= driver_extif.o
+ssb-$(CONFIG_SSB_DRIVER_PCICORE)	+= driver_pcicore.o
+ssb-$(CONFIG_SSB_DRIVER_GIGE)		+= driver_gige.o
+ssb-$(CONFIG_SSB_DRIVER_GPIO)		+= driver_gpio.o
+
+# b43 pci-ssb-bridge driver
+# Not strictly a part of SSB, but kept here for convenience
+ssb-$(CONFIG_SSB_B43_PCI_BRIDGE)	+= b43_pci_bridge.o
+
+obj-$(CONFIG_SSB)			+= ssb.o

linux-7.2.3/drivers/ssb/b43_pci_bridge.c

@@ -0,0 +1,60 @@
+/*
+ * Broadcom 43xx PCI-SSB bridge module
+ *
+ * This technically is a separate PCI driver module, but
+ * because of its small size we include it in the SSB core
+ * instead of creating a standalone module.
+ *
+ * Copyright 2007  Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/ssb/ssb.h>
+
+
+static const struct pci_device_id b43_pci_bridge_tbl[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4301) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4306) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4307) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4311) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4312) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4315) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4318) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BCM_GVC,  0x4318) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4319) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4320) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4321) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4322) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 43222) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4324) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4325) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4328) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4329) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x432b) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x432c) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4350) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4351) },
+	{ 0, },
+};
+MODULE_DEVICE_TABLE(pci, b43_pci_bridge_tbl);
+
+static struct pci_driver b43_pci_bridge_driver = {
+	.name = "b43-pci-bridge",
+	.id_table = b43_pci_bridge_tbl,
+};
+
+
+int __init b43_pci_ssb_bridge_init(void)
+{
+	return ssb_pcihost_register(&b43_pci_bridge_driver);
+}
+
+void __exit b43_pci_ssb_bridge_exit(void)
+{
+	ssb_pcihost_unregister(&b43_pci_bridge_driver);
+}

linux-7.2.3/drivers/ssb/bridge_pcmcia_80211.c

@@ -0,0 +1,133 @@
+/*
+ * Broadcom 43xx PCMCIA-SSB bridge module
+ *
+ * Copyright (c) 2007 Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+static const struct pcmcia_device_id ssb_host_pcmcia_tbl[] = {
+	PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x448),
+	PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x476),
+	PCMCIA_DEVICE_NULL,
+};
+
+MODULE_DEVICE_TABLE(pcmcia, ssb_host_pcmcia_tbl);
+
+static int ssb_host_pcmcia_probe(struct pcmcia_device *dev)
+{
+	struct ssb_bus *ssb;
+	int err = -ENOMEM;
+	int res = 0;
+
+	ssb = kzalloc_obj(*ssb);
+	if (!ssb)
+		goto out_error;
+
+	err = -ENODEV;
+
+	dev->config_flags |= CONF_ENABLE_IRQ;
+
+	dev->resource[2]->flags |=  WIN_ENABLE | WIN_DATA_WIDTH_16 |
+			 WIN_USE_WAIT;
+	dev->resource[2]->start = 0;
+	dev->resource[2]->end = SSB_CORE_SIZE;
+	res = pcmcia_request_window(dev, dev->resource[2], 250);
+	if (res != 0)
+		goto err_kfree_ssb;
+
+	res = pcmcia_map_mem_page(dev, dev->resource[2], 0);
+	if (res != 0)
+		goto err_disable;
+
+	if (!dev->irq)
+		goto err_disable;
+
+	res = pcmcia_enable_device(dev);
+	if (res != 0)
+		goto err_disable;
+
+	err = ssb_bus_pcmciabus_register(ssb, dev, dev->resource[2]->start);
+	if (err)
+		goto err_disable;
+	dev->priv = ssb;
+
+	return 0;
+
+err_disable:
+	pcmcia_disable_device(dev);
+err_kfree_ssb:
+	kfree(ssb);
+out_error:
+	dev_err(&dev->dev, "Initialization failed (%d, %d)\n", res, err);
+	return err;
+}
+
+static void ssb_host_pcmcia_remove(struct pcmcia_device *dev)
+{
+	struct ssb_bus *ssb = dev->priv;
+
+	ssb_bus_unregister(ssb);
+	pcmcia_disable_device(dev);
+	kfree(ssb);
+	dev->priv = NULL;
+}
+
+#ifdef CONFIG_PM
+static int ssb_host_pcmcia_suspend(struct pcmcia_device *dev)
+{
+	struct ssb_bus *ssb = dev->priv;
+
+	return ssb_bus_suspend(ssb);
+}
+
+static int ssb_host_pcmcia_resume(struct pcmcia_device *dev)
+{
+	struct ssb_bus *ssb = dev->priv;
+
+	return ssb_bus_resume(ssb);
+}
+#else /* CONFIG_PM */
+# define ssb_host_pcmcia_suspend		NULL
+# define ssb_host_pcmcia_resume		NULL
+#endif /* CONFIG_PM */
+
+static struct pcmcia_driver ssb_host_pcmcia_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "ssb-pcmcia",
+	.id_table	= ssb_host_pcmcia_tbl,
+	.probe		= ssb_host_pcmcia_probe,
+	.remove		= ssb_host_pcmcia_remove,
+	.suspend	= ssb_host_pcmcia_suspend,
+	.resume		= ssb_host_pcmcia_resume,
+};
+
+static int pcmcia_init_failed;
+
+/*
+ * These are not module init/exit functions!
+ * The module_pcmcia_driver() helper cannot be used here.
+ */
+int ssb_host_pcmcia_init(void)
+{
+	pcmcia_init_failed = pcmcia_register_driver(&ssb_host_pcmcia_driver);
+
+	return pcmcia_init_failed;
+}
+
+void ssb_host_pcmcia_exit(void)
+{
+	if (!pcmcia_init_failed)
+		pcmcia_unregister_driver(&ssb_host_pcmcia_driver);
+}

linux-7.2.3/drivers/ssb/driver_chipcommon.c

@@ -0,0 +1,697 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom ChipCommon core driver
+ *
+ * Copyright 2005, Broadcom Corporation
+ * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
+ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_regs.h>
+#include <linux/export.h>
+#include <linux/pci.h>
+#include <linux/bcm47xx_wdt.h>
+
+
+/* Clock sources */
+enum ssb_clksrc {
+	/* PCI clock */
+	SSB_CHIPCO_CLKSRC_PCI,
+	/* Crystal slow clock oscillator */
+	SSB_CHIPCO_CLKSRC_XTALOS,
+	/* Low power oscillator */
+	SSB_CHIPCO_CLKSRC_LOPWROS,
+};
+
+
+static inline u32 chipco_write32_masked(struct ssb_chipcommon *cc, u16 offset,
+					u32 mask, u32 value)
+{
+	value &= mask;
+	value |= chipco_read32(cc, offset) & ~mask;
+	chipco_write32(cc, offset, value);
+
+	return value;
+}
+
+void ssb_chipco_set_clockmode(struct ssb_chipcommon *cc,
+			      enum ssb_clkmode mode)
+{
+	struct ssb_device *ccdev = cc->dev;
+	struct ssb_bus *bus;
+	u32 tmp;
+
+	if (!ccdev)
+		return;
+	bus = ccdev->bus;
+
+	/* We support SLOW only on 6..9 */
+	if (ccdev->id.revision >= 10 && mode == SSB_CLKMODE_SLOW)
+		mode = SSB_CLKMODE_DYNAMIC;
+
+	if (cc->capabilities & SSB_CHIPCO_CAP_PMU)
+		return; /* PMU controls clockmode, separated function needed */
+	WARN_ON(ccdev->id.revision >= 20);
+
+	/* chipcommon cores prior to rev6 don't support dynamic clock control */
+	if (ccdev->id.revision < 6)
+		return;
+
+	/* ChipCommon cores rev10+ need testing */
+	if (ccdev->id.revision >= 10)
+		return;
+
+	if (!(cc->capabilities & SSB_CHIPCO_CAP_PCTL))
+		return;
+
+	switch (mode) {
+	case SSB_CLKMODE_SLOW: /* For revs 6..9 only */
+		tmp = chipco_read32(cc, SSB_CHIPCO_SLOWCLKCTL);
+		tmp |= SSB_CHIPCO_SLOWCLKCTL_FSLOW;
+		chipco_write32(cc, SSB_CHIPCO_SLOWCLKCTL, tmp);
+		break;
+	case SSB_CLKMODE_FAST:
+		if (ccdev->id.revision < 10) {
+			ssb_pci_xtal(bus, SSB_GPIO_XTAL, 1); /* Force crystal on */
+			tmp = chipco_read32(cc, SSB_CHIPCO_SLOWCLKCTL);
+			tmp &= ~SSB_CHIPCO_SLOWCLKCTL_FSLOW;
+			tmp |= SSB_CHIPCO_SLOWCLKCTL_IPLL;
+			chipco_write32(cc, SSB_CHIPCO_SLOWCLKCTL, tmp);
+		} else {
+			chipco_write32(cc, SSB_CHIPCO_SYSCLKCTL,
+				(chipco_read32(cc, SSB_CHIPCO_SYSCLKCTL) |
+				 SSB_CHIPCO_SYSCLKCTL_FORCEHT));
+			/* udelay(150); TODO: not available in early init */
+		}
+		break;
+	case SSB_CLKMODE_DYNAMIC:
+		if (ccdev->id.revision < 10) {
+			tmp = chipco_read32(cc, SSB_CHIPCO_SLOWCLKCTL);
+			tmp &= ~SSB_CHIPCO_SLOWCLKCTL_FSLOW;
+			tmp &= ~SSB_CHIPCO_SLOWCLKCTL_IPLL;
+			tmp &= ~SSB_CHIPCO_SLOWCLKCTL_ENXTAL;
+			if ((tmp & SSB_CHIPCO_SLOWCLKCTL_SRC) !=
+			    SSB_CHIPCO_SLOWCLKCTL_SRC_XTAL)
+				tmp |= SSB_CHIPCO_SLOWCLKCTL_ENXTAL;
+			chipco_write32(cc, SSB_CHIPCO_SLOWCLKCTL, tmp);
+
+			/* For dynamic control, we have to release our xtal_pu
+			 * "force on" */
+			if (tmp & SSB_CHIPCO_SLOWCLKCTL_ENXTAL)
+				ssb_pci_xtal(bus, SSB_GPIO_XTAL, 0);
+		} else {
+			chipco_write32(cc, SSB_CHIPCO_SYSCLKCTL,
+				(chipco_read32(cc, SSB_CHIPCO_SYSCLKCTL) &
+				 ~SSB_CHIPCO_SYSCLKCTL_FORCEHT));
+		}
+		break;
+	default:
+		WARN_ON(1);
+	}
+}
+
+/* Get the Slow Clock Source */
+static enum ssb_clksrc chipco_pctl_get_slowclksrc(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	u32 tmp;
+
+	if (cc->dev->id.revision < 6) {
+		if (bus->bustype == SSB_BUSTYPE_SSB ||
+		    bus->bustype == SSB_BUSTYPE_PCMCIA)
+			return SSB_CHIPCO_CLKSRC_XTALOS;
+		if (bus->bustype == SSB_BUSTYPE_PCI) {
+			pci_read_config_dword(bus->host_pci, SSB_GPIO_OUT, &tmp);
+			if (tmp & 0x10)
+				return SSB_CHIPCO_CLKSRC_PCI;
+			return SSB_CHIPCO_CLKSRC_XTALOS;
+		}
+	}
+	if (cc->dev->id.revision < 10) {
+		tmp = chipco_read32(cc, SSB_CHIPCO_SLOWCLKCTL);
+		tmp &= 0x7;
+		if (tmp == 0)
+			return SSB_CHIPCO_CLKSRC_LOPWROS;
+		if (tmp == 1)
+			return SSB_CHIPCO_CLKSRC_XTALOS;
+		if (tmp == 2)
+			return SSB_CHIPCO_CLKSRC_PCI;
+	}
+
+	return SSB_CHIPCO_CLKSRC_XTALOS;
+}
+
+/* Get maximum or minimum (depending on get_max flag) slowclock frequency. */
+static int chipco_pctl_clockfreqlimit(struct ssb_chipcommon *cc, int get_max)
+{
+	int limit;
+	enum ssb_clksrc clocksrc;
+	int divisor = 1;
+	u32 tmp;
+
+	clocksrc = chipco_pctl_get_slowclksrc(cc);
+	if (cc->dev->id.revision < 6) {
+		switch (clocksrc) {
+		case SSB_CHIPCO_CLKSRC_PCI:
+			divisor = 64;
+			break;
+		case SSB_CHIPCO_CLKSRC_XTALOS:
+			divisor = 32;
+			break;
+		default:
+			WARN_ON(1);
+		}
+	} else if (cc->dev->id.revision < 10) {
+		switch (clocksrc) {
+		case SSB_CHIPCO_CLKSRC_LOPWROS:
+			break;
+		case SSB_CHIPCO_CLKSRC_XTALOS:
+		case SSB_CHIPCO_CLKSRC_PCI:
+			tmp = chipco_read32(cc, SSB_CHIPCO_SLOWCLKCTL);
+			divisor = (tmp >> 16) + 1;
+			divisor *= 4;
+			break;
+		}
+	} else {
+		tmp = chipco_read32(cc, SSB_CHIPCO_SYSCLKCTL);
+		divisor = (tmp >> 16) + 1;
+		divisor *= 4;
+	}
+
+	switch (clocksrc) {
+	case SSB_CHIPCO_CLKSRC_LOPWROS:
+		if (get_max)
+			limit = 43000;
+		else
+			limit = 25000;
+		break;
+	case SSB_CHIPCO_CLKSRC_XTALOS:
+		if (get_max)
+			limit = 20200000;
+		else
+			limit = 19800000;
+		break;
+	case SSB_CHIPCO_CLKSRC_PCI:
+		if (get_max)
+			limit = 34000000;
+		else
+			limit = 25000000;
+		break;
+	}
+	limit /= divisor;
+
+	return limit;
+}
+
+static void chipco_powercontrol_init(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+
+	if (bus->chip_id == 0x4321) {
+		if (bus->chip_rev == 0)
+			chipco_write32(cc, SSB_CHIPCO_CHIPCTL, 0x3A4);
+		else if (bus->chip_rev == 1)
+			chipco_write32(cc, SSB_CHIPCO_CHIPCTL, 0xA4);
+	}
+
+	if (!(cc->capabilities & SSB_CHIPCO_CAP_PCTL))
+		return;
+
+	if (cc->dev->id.revision >= 10) {
+		/* Set Idle Power clock rate to 1Mhz */
+		chipco_write32(cc, SSB_CHIPCO_SYSCLKCTL,
+			       (chipco_read32(cc, SSB_CHIPCO_SYSCLKCTL) &
+				0x0000FFFF) | 0x00040000);
+	} else {
+		int maxfreq;
+
+		maxfreq = chipco_pctl_clockfreqlimit(cc, 1);
+		chipco_write32(cc, SSB_CHIPCO_PLLONDELAY,
+			       (maxfreq * 150 + 999999) / 1000000);
+		chipco_write32(cc, SSB_CHIPCO_FREFSELDELAY,
+			       (maxfreq * 15 + 999999) / 1000000);
+	}
+}
+
+/* https://bcm-v4.sipsolutions.net/802.11/PmuFastPwrupDelay */
+static u16 pmu_fast_powerup_delay(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+
+	switch (bus->chip_id) {
+	case 0x4312:
+	case 0x4322:
+	case 0x4328:
+		return 7000;
+	case 0x4325:
+		/* TODO: */
+	default:
+		return 15000;
+	}
+}
+
+/* https://bcm-v4.sipsolutions.net/802.11/ClkctlFastPwrupDelay */
+static void calc_fast_powerup_delay(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	int minfreq;
+	unsigned int tmp;
+	u32 pll_on_delay;
+
+	if (bus->bustype != SSB_BUSTYPE_PCI)
+		return;
+
+	if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
+		cc->fast_pwrup_delay = pmu_fast_powerup_delay(cc);
+		return;
+	}
+
+	if (!(cc->capabilities & SSB_CHIPCO_CAP_PCTL))
+		return;
+
+	minfreq = chipco_pctl_clockfreqlimit(cc, 0);
+	pll_on_delay = chipco_read32(cc, SSB_CHIPCO_PLLONDELAY);
+	tmp = (((pll_on_delay + 2) * 1000000) + (minfreq - 1)) / minfreq;
+	WARN_ON(tmp & ~0xFFFF);
+
+	cc->fast_pwrup_delay = tmp;
+}
+
+static u32 ssb_chipco_alp_clock(struct ssb_chipcommon *cc)
+{
+	if (cc->capabilities & SSB_CHIPCO_CAP_PMU)
+		return ssb_pmu_get_alp_clock(cc);
+
+	return 20000000;
+}
+
+static u32 ssb_chipco_watchdog_get_max_timer(struct ssb_chipcommon *cc)
+{
+	u32 nb;
+
+	if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
+		if (cc->dev->id.revision < 26)
+			nb = 16;
+		else
+			nb = (cc->dev->id.revision >= 37) ? 32 : 24;
+	} else {
+		nb = 28;
+	}
+	if (nb == 32)
+		return 0xffffffff;
+	else
+		return (1 << nb) - 1;
+}
+
+u32 ssb_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks)
+{
+	struct ssb_chipcommon *cc = bcm47xx_wdt_get_drvdata(wdt);
+
+	if (cc->dev->bus->bustype != SSB_BUSTYPE_SSB)
+		return 0;
+
+	return ssb_chipco_watchdog_timer_set(cc, ticks);
+}
+
+u32 ssb_chipco_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms)
+{
+	struct ssb_chipcommon *cc = bcm47xx_wdt_get_drvdata(wdt);
+	u32 ticks;
+
+	if (cc->dev->bus->bustype != SSB_BUSTYPE_SSB)
+		return 0;
+
+	ticks = ssb_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
+	return ticks / cc->ticks_per_ms;
+}
+
+static int ssb_chipco_watchdog_ticks_per_ms(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+
+	if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
+			/* based on 32KHz ILP clock */
+			return 32;
+	} else {
+		if (cc->dev->id.revision < 18)
+			return ssb_clockspeed(bus) / 1000;
+		else
+			return ssb_chipco_alp_clock(cc) / 1000;
+	}
+}
+
+void ssb_chipcommon_init(struct ssb_chipcommon *cc)
+{
+	if (!cc->dev)
+		return; /* We don't have a ChipCommon */
+
+	spin_lock_init(&cc->gpio_lock);
+
+	if (cc->dev->id.revision >= 11)
+		cc->status = chipco_read32(cc, SSB_CHIPCO_CHIPSTAT);
+	dev_dbg(cc->dev->dev, "chipcommon status is 0x%x\n", cc->status);
+
+	if (cc->dev->id.revision >= 20) {
+		chipco_write32(cc, SSB_CHIPCO_GPIOPULLUP, 0);
+		chipco_write32(cc, SSB_CHIPCO_GPIOPULLDOWN, 0);
+	}
+
+	ssb_pmu_init(cc);
+	chipco_powercontrol_init(cc);
+	ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
+	calc_fast_powerup_delay(cc);
+
+	if (cc->dev->bus->bustype == SSB_BUSTYPE_SSB) {
+		cc->ticks_per_ms = ssb_chipco_watchdog_ticks_per_ms(cc);
+		cc->max_timer_ms = ssb_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;
+	}
+}
+
+void ssb_chipco_suspend(struct ssb_chipcommon *cc)
+{
+	if (!cc->dev)
+		return;
+	ssb_chipco_set_clockmode(cc, SSB_CLKMODE_SLOW);
+}
+
+void ssb_chipco_resume(struct ssb_chipcommon *cc)
+{
+	if (!cc->dev)
+		return;
+	chipco_powercontrol_init(cc);
+	ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
+}
+
+/* Get the processor clock */
+void ssb_chipco_get_clockcpu(struct ssb_chipcommon *cc,
+                             u32 *plltype, u32 *n, u32 *m)
+{
+	*n = chipco_read32(cc, SSB_CHIPCO_CLOCK_N);
+	*plltype = (cc->capabilities & SSB_CHIPCO_CAP_PLLT);
+	switch (*plltype) {
+	case SSB_PLLTYPE_2:
+	case SSB_PLLTYPE_4:
+	case SSB_PLLTYPE_6:
+	case SSB_PLLTYPE_7:
+		*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_MIPS);
+		break;
+	case SSB_PLLTYPE_3:
+		/* 5350 uses m2 to control mips */
+		*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_M2);
+		break;
+	default:
+		*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_SB);
+		break;
+	}
+}
+
+/* Get the bus clock */
+void ssb_chipco_get_clockcontrol(struct ssb_chipcommon *cc,
+				 u32 *plltype, u32 *n, u32 *m)
+{
+	*n = chipco_read32(cc, SSB_CHIPCO_CLOCK_N);
+	*plltype = (cc->capabilities & SSB_CHIPCO_CAP_PLLT);
+	switch (*plltype) {
+	case SSB_PLLTYPE_6: /* 100/200 or 120/240 only */
+		*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_MIPS);
+		break;
+	case SSB_PLLTYPE_3: /* 25Mhz, 2 dividers */
+		if (cc->dev->bus->chip_id != 0x5365) {
+			*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_M2);
+			break;
+		}
+		fallthrough;
+	default:
+		*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_SB);
+	}
+}
+
+void ssb_chipco_timing_init(struct ssb_chipcommon *cc,
+			    unsigned long ns)
+{
+	struct ssb_device *dev = cc->dev;
+	struct ssb_bus *bus = dev->bus;
+	u32 tmp;
+
+	/* set register for external IO to control LED. */
+	chipco_write32(cc, SSB_CHIPCO_PROG_CFG, 0x11);
+	tmp = DIV_ROUND_UP(10, ns) << SSB_PROG_WCNT_3_SHIFT;		/* Waitcount-3 = 10ns */
+	tmp |= DIV_ROUND_UP(40, ns) << SSB_PROG_WCNT_1_SHIFT;	/* Waitcount-1 = 40ns */
+	tmp |= DIV_ROUND_UP(240, ns);				/* Waitcount-0 = 240ns */
+	chipco_write32(cc, SSB_CHIPCO_PROG_WAITCNT, tmp);	/* 0x01020a0c for a 100Mhz clock */
+
+	/* Set timing for the flash */
+	tmp = DIV_ROUND_UP(10, ns) << SSB_FLASH_WCNT_3_SHIFT;	/* Waitcount-3 = 10nS */
+	tmp |= DIV_ROUND_UP(10, ns) << SSB_FLASH_WCNT_1_SHIFT;	/* Waitcount-1 = 10nS */
+	tmp |= DIV_ROUND_UP(120, ns);				/* Waitcount-0 = 120nS */
+	if ((bus->chip_id == 0x5365) ||
+	    (dev->id.revision < 9))
+		chipco_write32(cc, SSB_CHIPCO_FLASH_WAITCNT, tmp);
+	if ((bus->chip_id == 0x5365) ||
+	    (dev->id.revision < 9) ||
+	    ((bus->chip_id == 0x5350) && (bus->chip_rev == 0)))
+		chipco_write32(cc, SSB_CHIPCO_PCMCIA_MEMWAIT, tmp);
+
+	if (bus->chip_id == 0x5350) {
+		/* Enable EXTIF */
+		tmp = DIV_ROUND_UP(10, ns) << SSB_PROG_WCNT_3_SHIFT;	  /* Waitcount-3 = 10ns */
+		tmp |= DIV_ROUND_UP(20, ns) << SSB_PROG_WCNT_2_SHIFT;  /* Waitcount-2 = 20ns */
+		tmp |= DIV_ROUND_UP(100, ns) << SSB_PROG_WCNT_1_SHIFT; /* Waitcount-1 = 100ns */
+		tmp |= DIV_ROUND_UP(120, ns);			  /* Waitcount-0 = 120ns */
+		chipco_write32(cc, SSB_CHIPCO_PROG_WAITCNT, tmp); /* 0x01020a0c for a 100Mhz clock */
+	}
+}
+
+/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
+u32 ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks)
+{
+	u32 maxt;
+	enum ssb_clkmode clkmode;
+
+	maxt = ssb_chipco_watchdog_get_max_timer(cc);
+	if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
+		if (ticks == 1)
+			ticks = 2;
+		else if (ticks > maxt)
+			ticks = maxt;
+		chipco_write32(cc, SSB_CHIPCO_PMU_WATCHDOG, ticks);
+	} else {
+		clkmode = ticks ? SSB_CLKMODE_FAST : SSB_CLKMODE_DYNAMIC;
+		ssb_chipco_set_clockmode(cc, clkmode);
+		if (ticks > maxt)
+			ticks = maxt;
+		/* instant NMI */
+		chipco_write32(cc, SSB_CHIPCO_WATCHDOG, ticks);
+	}
+	return ticks;
+}
+
+void ssb_chipco_irq_mask(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	chipco_write32_masked(cc, SSB_CHIPCO_IRQMASK, mask, value);
+}
+
+u32 ssb_chipco_irq_status(struct ssb_chipcommon *cc, u32 mask)
+{
+	return chipco_read32(cc, SSB_CHIPCO_IRQSTAT) & mask;
+}
+
+u32 ssb_chipco_gpio_in(struct ssb_chipcommon *cc, u32 mask)
+{
+	return chipco_read32(cc, SSB_CHIPCO_GPIOIN) & mask;
+}
+
+u32 ssb_chipco_gpio_out(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUT, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_chipco_gpio_outen(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUTEN, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_chipco_gpio_control(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOCTL, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_chipco_gpio_control);
+
+u32 ssb_chipco_gpio_intmask(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOIRQ, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_chipco_gpio_polarity(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOPOL, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_chipco_gpio_pullup(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	if (cc->dev->id.revision < 20)
+		return 0xffffffff;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOPULLUP, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_chipco_gpio_pulldown(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	if (cc->dev->id.revision < 20)
+		return 0xffffffff;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = chipco_write32_masked(cc, SSB_CHIPCO_GPIOPULLDOWN, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
+}
+
+#ifdef CONFIG_SSB_SERIAL
+int ssb_chipco_serial_init(struct ssb_chipcommon *cc,
+			   struct ssb_serial_port *ports)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	int nr_ports = 0;
+	u32 plltype;
+	unsigned int irq;
+	u32 baud_base, div;
+	u32 i, n;
+	unsigned int ccrev = cc->dev->id.revision;
+
+	plltype = (cc->capabilities & SSB_CHIPCO_CAP_PLLT);
+	irq = ssb_mips_irq(cc->dev);
+
+	if (plltype == SSB_PLLTYPE_1) {
+		/* PLL clock */
+		baud_base = ssb_calc_clock_rate(plltype,
+						chipco_read32(cc, SSB_CHIPCO_CLOCK_N),
+						chipco_read32(cc, SSB_CHIPCO_CLOCK_M2));
+		div = 1;
+	} else {
+		if (ccrev == 20) {
+			/* BCM5354 uses constant 25MHz clock */
+			baud_base = 25000000;
+			div = 48;
+			/* Set the override bit so we don't divide it */
+			chipco_write32(cc, SSB_CHIPCO_CORECTL,
+				       chipco_read32(cc, SSB_CHIPCO_CORECTL)
+				       | SSB_CHIPCO_CORECTL_UARTCLK0);
+		} else if ((ccrev >= 11) && (ccrev != 15)) {
+			baud_base = ssb_chipco_alp_clock(cc);
+			div = 1;
+			if (ccrev >= 21) {
+				/* Turn off UART clock before switching clocksource. */
+				chipco_write32(cc, SSB_CHIPCO_CORECTL,
+					       chipco_read32(cc, SSB_CHIPCO_CORECTL)
+					       & ~SSB_CHIPCO_CORECTL_UARTCLKEN);
+			}
+			/* Set the override bit so we don't divide it */
+			chipco_write32(cc, SSB_CHIPCO_CORECTL,
+				       chipco_read32(cc, SSB_CHIPCO_CORECTL)
+				       | SSB_CHIPCO_CORECTL_UARTCLK0);
+			if (ccrev >= 21) {
+				/* Re-enable the UART clock. */
+				chipco_write32(cc, SSB_CHIPCO_CORECTL,
+					       chipco_read32(cc, SSB_CHIPCO_CORECTL)
+					       | SSB_CHIPCO_CORECTL_UARTCLKEN);
+			}
+		} else if (ccrev >= 3) {
+			/* Internal backplane clock */
+			baud_base = ssb_clockspeed(bus);
+			div = chipco_read32(cc, SSB_CHIPCO_CLKDIV)
+			      & SSB_CHIPCO_CLKDIV_UART;
+		} else {
+			/* Fixed internal backplane clock */
+			baud_base = 88000000;
+			div = 48;
+		}
+
+		/* Clock source depends on strapping if UartClkOverride is unset */
+		if ((ccrev > 0) &&
+		    !(chipco_read32(cc, SSB_CHIPCO_CORECTL) & SSB_CHIPCO_CORECTL_UARTCLK0)) {
+			if ((cc->capabilities & SSB_CHIPCO_CAP_UARTCLK) ==
+			    SSB_CHIPCO_CAP_UARTCLK_INT) {
+				/* Internal divided backplane clock */
+				baud_base /= div;
+			} else {
+				/* Assume external clock of 1.8432 MHz */
+				baud_base = 1843200;
+			}
+		}
+	}
+
+	/* Determine the registers of the UARTs */
+	n = (cc->capabilities & SSB_CHIPCO_CAP_NRUART);
+	for (i = 0; i < n; i++) {
+		void __iomem *cc_mmio;
+		void __iomem *uart_regs;
+
+		cc_mmio = cc->dev->bus->mmio + (cc->dev->core_index * SSB_CORE_SIZE);
+		uart_regs = cc_mmio + SSB_CHIPCO_UART0_DATA;
+		/* Offset changed at after rev 0 */
+		if (ccrev == 0)
+			uart_regs += (i * 8);
+		else
+			uart_regs += (i * 256);
+
+		nr_ports++;
+		ports[i].regs = uart_regs;
+		ports[i].irq = irq;
+		ports[i].baud_base = baud_base;
+		ports[i].reg_shift = 0;
+	}
+
+	return nr_ports;
+}
+#endif /* CONFIG_SSB_SERIAL */

linux-7.2.3/drivers/ssb/driver_chipcommon_pmu.c

@@ -0,0 +1,716 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom ChipCommon Power Management Unit driver
+ *
+ * Copyright 2009, Michael Buesch <m@bues.ch>
+ * Copyright 2007, Broadcom Corporation
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_regs.h>
+#include <linux/ssb/ssb_driver_chipcommon.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#ifdef CONFIG_BCM47XX
+#include <linux/bcm47xx_nvram.h>
+#endif
+
+static u32 ssb_chipco_pll_read(struct ssb_chipcommon *cc, u32 offset)
+{
+	chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
+	return chipco_read32(cc, SSB_CHIPCO_PLLCTL_DATA);
+}
+
+static void ssb_chipco_pll_write(struct ssb_chipcommon *cc,
+				 u32 offset, u32 value)
+{
+	chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
+	chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, value);
+}
+
+static void ssb_chipco_regctl_maskset(struct ssb_chipcommon *cc,
+				   u32 offset, u32 mask, u32 set)
+{
+	u32 value;
+
+	chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
+	chipco_write32(cc, SSB_CHIPCO_REGCTL_ADDR, offset);
+	chipco_read32(cc, SSB_CHIPCO_REGCTL_ADDR);
+	value = chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
+	value &= mask;
+	value |= set;
+	chipco_write32(cc, SSB_CHIPCO_REGCTL_DATA, value);
+	chipco_read32(cc, SSB_CHIPCO_REGCTL_DATA);
+}
+
+struct pmu0_plltab_entry {
+	u16 freq;	/* Crystal frequency in kHz.*/
+	u8 xf;		/* Crystal frequency value for PMU control */
+	u8 wb_int;
+	u32 wb_frac;
+};
+
+static const struct pmu0_plltab_entry pmu0_plltab[] = {
+	{ .freq = 12000, .xf =  1, .wb_int = 73, .wb_frac = 349525, },
+	{ .freq = 13000, .xf =  2, .wb_int = 67, .wb_frac = 725937, },
+	{ .freq = 14400, .xf =  3, .wb_int = 61, .wb_frac = 116508, },
+	{ .freq = 15360, .xf =  4, .wb_int = 57, .wb_frac = 305834, },
+	{ .freq = 16200, .xf =  5, .wb_int = 54, .wb_frac = 336579, },
+	{ .freq = 16800, .xf =  6, .wb_int = 52, .wb_frac = 399457, },
+	{ .freq = 19200, .xf =  7, .wb_int = 45, .wb_frac = 873813, },
+	{ .freq = 19800, .xf =  8, .wb_int = 44, .wb_frac = 466033, },
+	{ .freq = 20000, .xf =  9, .wb_int = 44, .wb_frac = 0,      },
+	{ .freq = 25000, .xf = 10, .wb_int = 70, .wb_frac = 419430, },
+	{ .freq = 26000, .xf = 11, .wb_int = 67, .wb_frac = 725937, },
+	{ .freq = 30000, .xf = 12, .wb_int = 58, .wb_frac = 699050, },
+	{ .freq = 38400, .xf = 13, .wb_int = 45, .wb_frac = 873813, },
+	{ .freq = 40000, .xf = 14, .wb_int = 45, .wb_frac = 0,      },
+};
+#define SSB_PMU0_DEFAULT_XTALFREQ	20000
+
+static const struct pmu0_plltab_entry * pmu0_plltab_find_entry(u32 crystalfreq)
+{
+	const struct pmu0_plltab_entry *e;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(pmu0_plltab); i++) {
+		e = &pmu0_plltab[i];
+		if (e->freq == crystalfreq)
+			return e;
+	}
+
+	return NULL;
+}
+
+/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
+static void ssb_pmu0_pllinit_r0(struct ssb_chipcommon *cc,
+				u32 crystalfreq)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	const struct pmu0_plltab_entry *e = NULL;
+	u32 pmuctl, tmp, pllctl;
+	unsigned int i;
+
+	if (crystalfreq)
+		e = pmu0_plltab_find_entry(crystalfreq);
+	if (!e)
+		e = pmu0_plltab_find_entry(SSB_PMU0_DEFAULT_XTALFREQ);
+	BUG_ON(!e);
+	crystalfreq = e->freq;
+	cc->pmu.crystalfreq = e->freq;
+
+	/* Check if the PLL already is programmed to this frequency. */
+	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+	if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
+		/* We're already there... */
+		return;
+	}
+
+	dev_info(cc->dev->dev, "Programming PLL to %u.%03u MHz\n",
+		 crystalfreq / 1000, crystalfreq % 1000);
+
+	/* First turn the PLL off. */
+	switch (bus->chip_id) {
+	case 0x4328:
+		chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
+			      ~(1 << SSB_PMURES_4328_BB_PLL_PU));
+		chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
+			      ~(1 << SSB_PMURES_4328_BB_PLL_PU));
+		break;
+	case 0x5354:
+		chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
+			      ~(1 << SSB_PMURES_5354_BB_PLL_PU));
+		chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
+			      ~(1 << SSB_PMURES_5354_BB_PLL_PU));
+		break;
+	default:
+		WARN_ON(1);
+	}
+	for (i = 1500; i; i--) {
+		tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+		if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
+			break;
+		udelay(10);
+	}
+	tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+	if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
+		dev_emerg(cc->dev->dev, "Failed to turn the PLL off!\n");
+
+	/* Set PDIV in PLL control 0. */
+	pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL0);
+	if (crystalfreq >= SSB_PMU0_PLLCTL0_PDIV_FREQ)
+		pllctl |= SSB_PMU0_PLLCTL0_PDIV_MSK;
+	else
+		pllctl &= ~SSB_PMU0_PLLCTL0_PDIV_MSK;
+	ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL0, pllctl);
+
+	/* Set WILD in PLL control 1. */
+	pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL1);
+	pllctl &= ~SSB_PMU0_PLLCTL1_STOPMOD;
+	pllctl &= ~(SSB_PMU0_PLLCTL1_WILD_IMSK | SSB_PMU0_PLLCTL1_WILD_FMSK);
+	pllctl |= ((u32)e->wb_int << SSB_PMU0_PLLCTL1_WILD_IMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_IMSK;
+	pllctl |= ((u32)e->wb_frac << SSB_PMU0_PLLCTL1_WILD_FMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_FMSK;
+	if (e->wb_frac == 0)
+		pllctl |= SSB_PMU0_PLLCTL1_STOPMOD;
+	ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL1, pllctl);
+
+	/* Set WILD in PLL control 2. */
+	pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL2);
+	pllctl &= ~SSB_PMU0_PLLCTL2_WILD_IMSKHI;
+	pllctl |= (((u32)e->wb_int >> 4) << SSB_PMU0_PLLCTL2_WILD_IMSKHI_SHIFT) & SSB_PMU0_PLLCTL2_WILD_IMSKHI;
+	ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL2, pllctl);
+
+	/* Set the crystalfrequency and the divisor. */
+	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+	pmuctl &= ~SSB_CHIPCO_PMU_CTL_ILP_DIV;
+	pmuctl |= (((crystalfreq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
+			& SSB_CHIPCO_PMU_CTL_ILP_DIV;
+	pmuctl &= ~SSB_CHIPCO_PMU_CTL_XTALFREQ;
+	pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
+	chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
+}
+
+struct pmu1_plltab_entry {
+	u16 freq;	/* Crystal frequency in kHz.*/
+	u8 xf;		/* Crystal frequency value for PMU control */
+	u8 ndiv_int;
+	u32 ndiv_frac;
+	u8 p1div;
+	u8 p2div;
+};
+
+static const struct pmu1_plltab_entry pmu1_plltab[] = {
+	{ .freq = 12000, .xf =  1, .p1div = 3, .p2div = 22, .ndiv_int =  0x9, .ndiv_frac = 0xFFFFEF, },
+	{ .freq = 13000, .xf =  2, .p1div = 1, .p2div =  6, .ndiv_int =  0xb, .ndiv_frac = 0x483483, },
+	{ .freq = 14400, .xf =  3, .p1div = 1, .p2div = 10, .ndiv_int =  0xa, .ndiv_frac = 0x1C71C7, },
+	{ .freq = 15360, .xf =  4, .p1div = 1, .p2div =  5, .ndiv_int =  0xb, .ndiv_frac = 0x755555, },
+	{ .freq = 16200, .xf =  5, .p1div = 1, .p2div = 10, .ndiv_int =  0x5, .ndiv_frac = 0x6E9E06, },
+	{ .freq = 16800, .xf =  6, .p1div = 1, .p2div = 10, .ndiv_int =  0x5, .ndiv_frac = 0x3CF3CF, },
+	{ .freq = 19200, .xf =  7, .p1div = 1, .p2div =  9, .ndiv_int =  0x5, .ndiv_frac = 0x17B425, },
+	{ .freq = 19800, .xf =  8, .p1div = 1, .p2div = 11, .ndiv_int =  0x4, .ndiv_frac = 0xA57EB,  },
+	{ .freq = 20000, .xf =  9, .p1div = 1, .p2div = 11, .ndiv_int =  0x4, .ndiv_frac = 0,        },
+	{ .freq = 24000, .xf = 10, .p1div = 3, .p2div = 11, .ndiv_int =  0xa, .ndiv_frac = 0,        },
+	{ .freq = 25000, .xf = 11, .p1div = 5, .p2div = 16, .ndiv_int =  0xb, .ndiv_frac = 0,        },
+	{ .freq = 26000, .xf = 12, .p1div = 1, .p2div =  2, .ndiv_int = 0x10, .ndiv_frac = 0xEC4EC4, },
+	{ .freq = 30000, .xf = 13, .p1div = 3, .p2div =  8, .ndiv_int =  0xb, .ndiv_frac = 0,        },
+	{ .freq = 38400, .xf = 14, .p1div = 1, .p2div =  5, .ndiv_int =  0x4, .ndiv_frac = 0x955555, },
+	{ .freq = 40000, .xf = 15, .p1div = 1, .p2div =  2, .ndiv_int =  0xb, .ndiv_frac = 0,        },
+};
+
+#define SSB_PMU1_DEFAULT_XTALFREQ	15360
+
+static const struct pmu1_plltab_entry * pmu1_plltab_find_entry(u32 crystalfreq)
+{
+	const struct pmu1_plltab_entry *e;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(pmu1_plltab); i++) {
+		e = &pmu1_plltab[i];
+		if (e->freq == crystalfreq)
+			return e;
+	}
+
+	return NULL;
+}
+
+/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
+static void ssb_pmu1_pllinit_r0(struct ssb_chipcommon *cc,
+				u32 crystalfreq)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	const struct pmu1_plltab_entry *e = NULL;
+	u32 buffer_strength = 0;
+	u32 tmp, pllctl, pmuctl;
+	unsigned int i;
+
+	if (bus->chip_id == 0x4312) {
+		/* We do not touch the BCM4312 PLL and assume
+		 * the default crystal settings work out-of-the-box. */
+		cc->pmu.crystalfreq = 20000;
+		return;
+	}
+
+	if (crystalfreq)
+		e = pmu1_plltab_find_entry(crystalfreq);
+	if (!e)
+		e = pmu1_plltab_find_entry(SSB_PMU1_DEFAULT_XTALFREQ);
+	BUG_ON(!e);
+	crystalfreq = e->freq;
+	cc->pmu.crystalfreq = e->freq;
+
+	/* Check if the PLL already is programmed to this frequency. */
+	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+	if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
+		/* We're already there... */
+		return;
+	}
+
+	dev_info(cc->dev->dev, "Programming PLL to %u.%03u MHz\n",
+		 crystalfreq / 1000, crystalfreq % 1000);
+
+	/* First turn the PLL off. */
+	switch (bus->chip_id) {
+	case 0x4325:
+		chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
+			      ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
+				(1 << SSB_PMURES_4325_HT_AVAIL)));
+		chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
+			      ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
+				(1 << SSB_PMURES_4325_HT_AVAIL)));
+		/* Adjust the BBPLL to 2 on all channels later. */
+		buffer_strength = 0x222222;
+		break;
+	default:
+		WARN_ON(1);
+	}
+	for (i = 1500; i; i--) {
+		tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+		if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
+			break;
+		udelay(10);
+	}
+	tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+	if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
+		dev_emerg(cc->dev->dev, "Failed to turn the PLL off!\n");
+
+	/* Set p1div and p2div. */
+	pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL0);
+	pllctl &= ~(SSB_PMU1_PLLCTL0_P1DIV | SSB_PMU1_PLLCTL0_P2DIV);
+	pllctl |= ((u32)e->p1div << SSB_PMU1_PLLCTL0_P1DIV_SHIFT) & SSB_PMU1_PLLCTL0_P1DIV;
+	pllctl |= ((u32)e->p2div << SSB_PMU1_PLLCTL0_P2DIV_SHIFT) & SSB_PMU1_PLLCTL0_P2DIV;
+	ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, pllctl);
+
+	/* Set ndiv int and ndiv mode */
+	pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL2);
+	pllctl &= ~(SSB_PMU1_PLLCTL2_NDIVINT | SSB_PMU1_PLLCTL2_NDIVMODE);
+	pllctl |= ((u32)e->ndiv_int << SSB_PMU1_PLLCTL2_NDIVINT_SHIFT) & SSB_PMU1_PLLCTL2_NDIVINT;
+	pllctl |= (1 << SSB_PMU1_PLLCTL2_NDIVMODE_SHIFT) & SSB_PMU1_PLLCTL2_NDIVMODE;
+	ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, pllctl);
+
+	/* Set ndiv frac */
+	pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL3);
+	pllctl &= ~SSB_PMU1_PLLCTL3_NDIVFRAC;
+	pllctl |= ((u32)e->ndiv_frac << SSB_PMU1_PLLCTL3_NDIVFRAC_SHIFT) & SSB_PMU1_PLLCTL3_NDIVFRAC;
+	ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, pllctl);
+
+	/* Change the drive strength, if required. */
+	if (buffer_strength) {
+		pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL5);
+		pllctl &= ~SSB_PMU1_PLLCTL5_CLKDRV;
+		pllctl |= (buffer_strength << SSB_PMU1_PLLCTL5_CLKDRV_SHIFT) & SSB_PMU1_PLLCTL5_CLKDRV;
+		ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, pllctl);
+	}
+
+	/* Tune the crystalfreq and the divisor. */
+	pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+	pmuctl &= ~(SSB_CHIPCO_PMU_CTL_ILP_DIV | SSB_CHIPCO_PMU_CTL_XTALFREQ);
+	pmuctl |= ((((u32)e->freq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
+			& SSB_CHIPCO_PMU_CTL_ILP_DIV;
+	pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
+	chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
+}
+
+static void ssb_pmu_pll_init(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	u32 crystalfreq = 0; /* in kHz. 0 = keep default freq. */
+
+	if (bus->bustype == SSB_BUSTYPE_SSB) {
+#ifdef CONFIG_BCM47XX
+		char buf[20];
+		if (bcm47xx_nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0)
+			crystalfreq = simple_strtoul(buf, NULL, 0);
+#endif
+	}
+
+	switch (bus->chip_id) {
+	case 0x4312:
+	case 0x4325:
+		ssb_pmu1_pllinit_r0(cc, crystalfreq);
+		break;
+	case 0x4328:
+		ssb_pmu0_pllinit_r0(cc, crystalfreq);
+		break;
+	case 0x5354:
+		if (crystalfreq == 0)
+			crystalfreq = 25000;
+		ssb_pmu0_pllinit_r0(cc, crystalfreq);
+		break;
+	case 0x4322:
+		if (cc->pmu.rev == 2) {
+			chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, 0x0000000A);
+			chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, 0x380005C0);
+		}
+		break;
+	case 43222:
+		break;
+	default:
+		dev_err(cc->dev->dev, "ERROR: PLL init unknown for device %04X\n",
+			bus->chip_id);
+	}
+}
+
+struct pmu_res_updown_tab_entry {
+	u8 resource;	/* The resource number */
+	u16 updown;	/* The updown value */
+};
+
+enum pmu_res_depend_tab_task {
+	PMU_RES_DEP_SET = 1,
+	PMU_RES_DEP_ADD,
+	PMU_RES_DEP_REMOVE,
+};
+
+struct pmu_res_depend_tab_entry {
+	u8 resource;	/* The resource number */
+	u8 task;	/* SET | ADD | REMOVE */
+	u32 depend;	/* The depend mask */
+};
+
+static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4328a0[] = {
+	{ .resource = SSB_PMURES_4328_EXT_SWITCHER_PWM,		.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_BB_SWITCHER_PWM,		.updown = 0x1F01, },
+	{ .resource = SSB_PMURES_4328_BB_SWITCHER_BURST,	.updown = 0x010F, },
+	{ .resource = SSB_PMURES_4328_BB_EXT_SWITCHER_BURST,	.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_ILP_REQUEST,		.updown = 0x0202, },
+	{ .resource = SSB_PMURES_4328_RADIO_SWITCHER_PWM,	.updown = 0x0F01, },
+	{ .resource = SSB_PMURES_4328_RADIO_SWITCHER_BURST,	.updown = 0x0F01, },
+	{ .resource = SSB_PMURES_4328_ROM_SWITCH,		.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_PA_REF_LDO,		.updown = 0x0F01, },
+	{ .resource = SSB_PMURES_4328_RADIO_LDO,		.updown = 0x0F01, },
+	{ .resource = SSB_PMURES_4328_AFE_LDO,			.updown = 0x0F01, },
+	{ .resource = SSB_PMURES_4328_PLL_LDO,			.updown = 0x0F01, },
+	{ .resource = SSB_PMURES_4328_BG_FILTBYP,		.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_TX_FILTBYP,		.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_RX_FILTBYP,		.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_XTAL_PU,			.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_XTAL_EN,			.updown = 0xA001, },
+	{ .resource = SSB_PMURES_4328_BB_PLL_FILTBYP,		.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_RF_PLL_FILTBYP,		.updown = 0x0101, },
+	{ .resource = SSB_PMURES_4328_BB_PLL_PU,		.updown = 0x0701, },
+};
+
+static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4328a0[] = {
+	{
+		/* Adjust ILP Request to avoid forcing EXT/BB into burst mode. */
+		.resource = SSB_PMURES_4328_ILP_REQUEST,
+		.task = PMU_RES_DEP_SET,
+		.depend = ((1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
+			   (1 << SSB_PMURES_4328_BB_SWITCHER_PWM)),
+	},
+};
+
+static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4325a0[] = {
+	{ .resource = SSB_PMURES_4325_XTAL_PU,			.updown = 0x1501, },
+};
+
+static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4325a0[] = {
+	{
+		/* Adjust HT-Available dependencies. */
+		.resource = SSB_PMURES_4325_HT_AVAIL,
+		.task = PMU_RES_DEP_ADD,
+		.depend = ((1 << SSB_PMURES_4325_RX_PWRSW_PU) |
+			   (1 << SSB_PMURES_4325_TX_PWRSW_PU) |
+			   (1 << SSB_PMURES_4325_LOGEN_PWRSW_PU) |
+			   (1 << SSB_PMURES_4325_AFE_PWRSW_PU)),
+	},
+};
+
+static void ssb_pmu_resources_init(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	u32 min_msk = 0, max_msk = 0;
+	unsigned int i;
+	const struct pmu_res_updown_tab_entry *updown_tab = NULL;
+	unsigned int updown_tab_size = 0;
+	const struct pmu_res_depend_tab_entry *depend_tab = NULL;
+	unsigned int depend_tab_size = 0;
+
+	switch (bus->chip_id) {
+	case 0x4312:
+		 min_msk = 0xCBB;
+		 break;
+	case 0x4322:
+	case 43222:
+		/* We keep the default settings:
+		 * min_msk = 0xCBB
+		 * max_msk = 0x7FFFF
+		 */
+		break;
+	case 0x4325:
+		/* Power OTP down later. */
+		min_msk = (1 << SSB_PMURES_4325_CBUCK_BURST) |
+			  (1 << SSB_PMURES_4325_LNLDO2_PU);
+		if (chipco_read32(cc, SSB_CHIPCO_CHIPSTAT) &
+		    SSB_CHIPCO_CHST_4325_PMUTOP_2B)
+			min_msk |= (1 << SSB_PMURES_4325_CLDO_CBUCK_BURST);
+		/* The PLL may turn on, if it decides so. */
+		max_msk = 0xFFFFF;
+		updown_tab = pmu_res_updown_tab_4325a0;
+		updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4325a0);
+		depend_tab = pmu_res_depend_tab_4325a0;
+		depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4325a0);
+		break;
+	case 0x4328:
+		min_msk = (1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
+			  (1 << SSB_PMURES_4328_BB_SWITCHER_PWM) |
+			  (1 << SSB_PMURES_4328_XTAL_EN);
+		/* The PLL may turn on, if it decides so. */
+		max_msk = 0xFFFFF;
+		updown_tab = pmu_res_updown_tab_4328a0;
+		updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4328a0);
+		depend_tab = pmu_res_depend_tab_4328a0;
+		depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4328a0);
+		break;
+	case 0x5354:
+		/* The PLL may turn on, if it decides so. */
+		max_msk = 0xFFFFF;
+		break;
+	default:
+		dev_err(cc->dev->dev, "ERROR: PMU resource config unknown for device %04X\n",
+			bus->chip_id);
+	}
+
+	if (updown_tab) {
+		for (i = 0; i < updown_tab_size; i++) {
+			chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
+				       updown_tab[i].resource);
+			chipco_write32(cc, SSB_CHIPCO_PMU_RES_UPDNTM,
+				       updown_tab[i].updown);
+		}
+	}
+	if (depend_tab) {
+		for (i = 0; i < depend_tab_size; i++) {
+			chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
+				       depend_tab[i].resource);
+			switch (depend_tab[i].task) {
+			case PMU_RES_DEP_SET:
+				chipco_write32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
+					       depend_tab[i].depend);
+				break;
+			case PMU_RES_DEP_ADD:
+				chipco_set32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
+					     depend_tab[i].depend);
+				break;
+			case PMU_RES_DEP_REMOVE:
+				chipco_mask32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
+					      ~(depend_tab[i].depend));
+				break;
+			default:
+				WARN_ON(1);
+			}
+		}
+	}
+
+	/* Set the resource masks. */
+	if (min_msk)
+		chipco_write32(cc, SSB_CHIPCO_PMU_MINRES_MSK, min_msk);
+	if (max_msk)
+		chipco_write32(cc, SSB_CHIPCO_PMU_MAXRES_MSK, max_msk);
+}
+
+/* https://bcm-v4.sipsolutions.net/802.11/SSB/PmuInit */
+void ssb_pmu_init(struct ssb_chipcommon *cc)
+{
+	u32 pmucap;
+
+	if (!(cc->capabilities & SSB_CHIPCO_CAP_PMU))
+		return;
+
+	pmucap = chipco_read32(cc, SSB_CHIPCO_PMU_CAP);
+	cc->pmu.rev = (pmucap & SSB_CHIPCO_PMU_CAP_REVISION);
+
+	dev_dbg(cc->dev->dev, "Found rev %u PMU (capabilities 0x%08X)\n",
+		cc->pmu.rev, pmucap);
+
+	if (cc->pmu.rev == 1)
+		chipco_mask32(cc, SSB_CHIPCO_PMU_CTL,
+			      ~SSB_CHIPCO_PMU_CTL_NOILPONW);
+	else
+		chipco_set32(cc, SSB_CHIPCO_PMU_CTL,
+			     SSB_CHIPCO_PMU_CTL_NOILPONW);
+	ssb_pmu_pll_init(cc);
+	ssb_pmu_resources_init(cc);
+}
+
+void ssb_pmu_set_ldo_voltage(struct ssb_chipcommon *cc,
+			     enum ssb_pmu_ldo_volt_id id, u32 voltage)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	u32 addr, shift, mask;
+
+	switch (bus->chip_id) {
+	case 0x4328:
+	case 0x5354:
+		switch (id) {
+		case LDO_VOLT1:
+			addr = 2;
+			shift = 25;
+			mask = 0xF;
+			break;
+		case LDO_VOLT2:
+			addr = 3;
+			shift = 1;
+			mask = 0xF;
+			break;
+		case LDO_VOLT3:
+			addr = 3;
+			shift = 9;
+			mask = 0xF;
+			break;
+		case LDO_PAREF:
+			addr = 3;
+			shift = 17;
+			mask = 0x3F;
+			break;
+		default:
+			WARN_ON(1);
+			return;
+		}
+		break;
+	case 0x4312:
+		if (WARN_ON(id != LDO_PAREF))
+			return;
+		addr = 0;
+		shift = 21;
+		mask = 0x3F;
+		break;
+	default:
+		return;
+	}
+
+	ssb_chipco_regctl_maskset(cc, addr, ~(mask << shift),
+				  (voltage & mask) << shift);
+}
+
+void ssb_pmu_set_ldo_paref(struct ssb_chipcommon *cc, bool on)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+	int ldo;
+
+	switch (bus->chip_id) {
+	case 0x4312:
+		ldo = SSB_PMURES_4312_PA_REF_LDO;
+		break;
+	case 0x4328:
+		ldo = SSB_PMURES_4328_PA_REF_LDO;
+		break;
+	case 0x5354:
+		ldo = SSB_PMURES_5354_PA_REF_LDO;
+		break;
+	default:
+		return;
+	}
+
+	if (on)
+		chipco_set32(cc, SSB_CHIPCO_PMU_MINRES_MSK, 1 << ldo);
+	else
+		chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK, ~(1 << ldo));
+	chipco_read32(cc, SSB_CHIPCO_PMU_MINRES_MSK); //SPEC FIXME found via mmiotrace - dummy read?
+}
+
+EXPORT_SYMBOL(ssb_pmu_set_ldo_voltage);
+EXPORT_SYMBOL(ssb_pmu_set_ldo_paref);
+
+static u32 ssb_pmu_get_alp_clock_clk0(struct ssb_chipcommon *cc)
+{
+	u32 crystalfreq;
+	const struct pmu0_plltab_entry *e = NULL;
+
+	crystalfreq = (chipco_read32(cc, SSB_CHIPCO_PMU_CTL) &
+		       SSB_CHIPCO_PMU_CTL_XTALFREQ)  >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT;
+	e = pmu0_plltab_find_entry(crystalfreq);
+	BUG_ON(!e);
+	return e->freq * 1000;
+}
+
+u32 ssb_pmu_get_alp_clock(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+
+	switch (bus->chip_id) {
+	case 0x5354:
+		return ssb_pmu_get_alp_clock_clk0(cc);
+	default:
+		dev_err(cc->dev->dev, "ERROR: PMU alp clock unknown for device %04X\n",
+			bus->chip_id);
+		return 0;
+	}
+}
+
+u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+
+	switch (bus->chip_id) {
+	case 0x5354:
+		/* 5354 chip uses a non programmable PLL of frequency 240MHz */
+		return 240000000;
+	default:
+		dev_err(cc->dev->dev, "ERROR: PMU cpu clock unknown for device %04X\n",
+			bus->chip_id);
+		return 0;
+	}
+}
+
+u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc)
+{
+	struct ssb_bus *bus = cc->dev->bus;
+
+	switch (bus->chip_id) {
+	case 0x5354:
+		return 120000000;
+	default:
+		dev_err(cc->dev->dev, "ERROR: PMU controlclock unknown for device %04X\n",
+			bus->chip_id);
+		return 0;
+	}
+}
+
+void ssb_pmu_spuravoid_pllupdate(struct ssb_chipcommon *cc, int spuravoid)
+{
+	u32 pmu_ctl = 0;
+
+	switch (cc->dev->bus->chip_id) {
+	case 0x4322:
+		ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, 0x11100070);
+		ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL1, 0x1014140a);
+		ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, 0x88888854);
+		if (spuravoid == 1)
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x05201828);
+		else
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x05001828);
+		pmu_ctl = SSB_CHIPCO_PMU_CTL_PLL_UPD;
+		break;
+	case 43222:
+		if (spuravoid == 1) {
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, 0x11500008);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL1, 0x0C000C06);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x0F600a08);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, 0x00000000);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL4, 0x2001E920);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, 0x88888815);
+		} else {
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, 0x11100008);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL1, 0x0c000c06);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, 0x03000a08);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, 0x00000000);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL4, 0x200005c0);
+			ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, 0x88888855);
+		}
+		pmu_ctl = SSB_CHIPCO_PMU_CTL_PLL_UPD;
+		break;
+	default:
+		dev_err(cc->dev->dev,
+			"Unknown spuravoidance settings for chip 0x%04X, not changing PLL\n",
+			cc->dev->bus->chip_id);
+		return;
+	}
+
+	chipco_set32(cc, SSB_CHIPCO_PMU_CTL, pmu_ctl);
+}
+EXPORT_SYMBOL_GPL(ssb_pmu_spuravoid_pllupdate);

linux-7.2.3/drivers/ssb/driver_chipcommon_sflash.c

@@ -0,0 +1,164 @@
+/*
+ * Sonics Silicon Backplane
+ * ChipCommon serial flash interface
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+
+static struct resource ssb_sflash_resource = {
+	.name	= "ssb_sflash",
+	.start	= SSB_FLASH2,
+	.end	= 0,
+	.flags  = IORESOURCE_MEM | IORESOURCE_READONLY,
+};
+
+struct platform_device ssb_sflash_dev = {
+	.name		= "ssb_sflash",
+	.resource	= &ssb_sflash_resource,
+	.num_resources	= 1,
+};
+
+struct ssb_sflash_tbl_e {
+	char *name;
+	u32 id;
+	u32 blocksize;
+	u16 numblocks;
+};
+
+static const struct ssb_sflash_tbl_e ssb_sflash_st_tbl[] = {
+	{ "M25P20", 0x11, 0x10000, 4, },
+	{ "M25P40", 0x12, 0x10000, 8, },
+
+	{ "M25P16", 0x14, 0x10000, 32, },
+	{ "M25P32", 0x15, 0x10000, 64, },
+	{ "M25P64", 0x16, 0x10000, 128, },
+	{ "M25FL128", 0x17, 0x10000, 256, },
+	{ NULL },
+};
+
+static const struct ssb_sflash_tbl_e ssb_sflash_sst_tbl[] = {
+	{ "SST25WF512", 1, 0x1000, 16, },
+	{ "SST25VF512", 0x48, 0x1000, 16, },
+	{ "SST25WF010", 2, 0x1000, 32, },
+	{ "SST25VF010", 0x49, 0x1000, 32, },
+	{ "SST25WF020", 3, 0x1000, 64, },
+	{ "SST25VF020", 0x43, 0x1000, 64, },
+	{ "SST25WF040", 4, 0x1000, 128, },
+	{ "SST25VF040", 0x44, 0x1000, 128, },
+	{ "SST25VF040B", 0x8d, 0x1000, 128, },
+	{ "SST25WF080", 5, 0x1000, 256, },
+	{ "SST25VF080B", 0x8e, 0x1000, 256, },
+	{ "SST25VF016", 0x41, 0x1000, 512, },
+	{ "SST25VF032", 0x4a, 0x1000, 1024, },
+	{ "SST25VF064", 0x4b, 0x1000, 2048, },
+	{ NULL },
+};
+
+static const struct ssb_sflash_tbl_e ssb_sflash_at_tbl[] = {
+	{ "AT45DB011", 0xc, 256, 512, },
+	{ "AT45DB021", 0x14, 256, 1024, },
+	{ "AT45DB041", 0x1c, 256, 2048, },
+	{ "AT45DB081", 0x24, 256, 4096, },
+	{ "AT45DB161", 0x2c, 512, 4096, },
+	{ "AT45DB321", 0x34, 512, 8192, },
+	{ "AT45DB642", 0x3c, 1024, 8192, },
+	{ NULL },
+};
+
+static void ssb_sflash_cmd(struct ssb_chipcommon *cc, u32 opcode)
+{
+	int i;
+	chipco_write32(cc, SSB_CHIPCO_FLASHCTL,
+		       SSB_CHIPCO_FLASHCTL_START | opcode);
+	for (i = 0; i < 1000; i++) {
+		if (!(chipco_read32(cc, SSB_CHIPCO_FLASHCTL) &
+		      SSB_CHIPCO_FLASHCTL_BUSY))
+			return;
+		cpu_relax();
+	}
+	dev_err(cc->dev->dev, "SFLASH control command failed (timeout)!\n");
+}
+
+/* Initialize serial flash access */
+int ssb_sflash_init(struct ssb_chipcommon *cc)
+{
+	struct ssb_sflash *sflash = &cc->dev->bus->mipscore.sflash;
+	const struct ssb_sflash_tbl_e *e;
+	u32 id, id2;
+
+	switch (cc->capabilities & SSB_CHIPCO_CAP_FLASHT) {
+	case SSB_CHIPCO_FLASHT_STSER:
+		ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_DP);
+
+		chipco_write32(cc, SSB_CHIPCO_FLASHADDR, 0);
+		ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_RES);
+		id = chipco_read32(cc, SSB_CHIPCO_FLASHDATA);
+
+		chipco_write32(cc, SSB_CHIPCO_FLASHADDR, 1);
+		ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_ST_RES);
+		id2 = chipco_read32(cc, SSB_CHIPCO_FLASHDATA);
+
+		switch (id) {
+		case 0xbf:
+			for (e = ssb_sflash_sst_tbl; e->name; e++) {
+				if (e->id == id2)
+					break;
+			}
+			break;
+		case 0x13:
+			return -ENOTSUPP;
+		default:
+			for (e = ssb_sflash_st_tbl; e->name; e++) {
+				if (e->id == id)
+					break;
+			}
+			break;
+		}
+		if (!e->name) {
+			pr_err("Unsupported ST serial flash (id: 0x%X, id2: 0x%X)\n",
+			       id, id2);
+			return -ENOTSUPP;
+		}
+
+		break;
+	case SSB_CHIPCO_FLASHT_ATSER:
+		ssb_sflash_cmd(cc, SSB_CHIPCO_FLASHCTL_AT_STATUS);
+		id = chipco_read32(cc, SSB_CHIPCO_FLASHDATA) & 0x3c;
+
+		for (e = ssb_sflash_at_tbl; e->name; e++) {
+			if (e->id == id)
+				break;
+		}
+		if (!e->name) {
+			pr_err("Unsupported Atmel serial flash (id: 0x%X)\n",
+			       id);
+			return -ENOTSUPP;
+		}
+
+		break;
+	default:
+		pr_err("Unsupported flash type\n");
+		return -ENOTSUPP;
+	}
+
+	sflash->window = SSB_FLASH2;
+	sflash->blocksize = e->blocksize;
+	sflash->numblocks = e->numblocks;
+	sflash->size = sflash->blocksize * sflash->numblocks;
+	sflash->present = true;
+
+	pr_info("Found %s serial flash (size: %dKiB, blocksize: 0x%X, blocks: %d)\n",
+		e->name, sflash->size / 1024, e->blocksize, e->numblocks);
+
+	/* Prepare platform device, but don't register it yet. It's too early,
+	 * malloc (required by device_private_init) is not available yet. */
+	ssb_sflash_dev.resource[0].end = ssb_sflash_dev.resource[0].start +
+					 sflash->size;
+	ssb_sflash_dev.dev.platform_data = sflash;
+
+	return 0;
+}

linux-7.2.3/drivers/ssb/driver_extif.c

@@ -0,0 +1,201 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom EXTIF core driver
+ *
+ * Copyright 2005, Broadcom Corporation
+ * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
+ * Copyright 2006, 2007, Felix Fietkau <nbd@openwrt.org>
+ * Copyright 2007, Aurelien Jarno <aurelien@aurel32.net>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/serial_reg.h>
+
+
+static inline u32 extif_read32(struct ssb_extif *extif, u16 offset)
+{
+	return ssb_read32(extif->dev, offset);
+}
+
+static inline void extif_write32(struct ssb_extif *extif, u16 offset, u32 value)
+{
+	ssb_write32(extif->dev, offset, value);
+}
+
+static inline u32 extif_write32_masked(struct ssb_extif *extif, u16 offset,
+				       u32 mask, u32 value)
+{
+	value &= mask;
+	value |= extif_read32(extif, offset) & ~mask;
+	extif_write32(extif, offset, value);
+
+	return value;
+}
+
+#ifdef CONFIG_SSB_SERIAL
+static bool serial_exists(u8 *regs)
+{
+	u8 save_mcr, msr = 0;
+
+	if (regs) {
+		save_mcr = regs[UART_MCR];
+		regs[UART_MCR] = (UART_MCR_LOOP | UART_MCR_OUT2 | UART_MCR_RTS);
+		msr = regs[UART_MSR] & (UART_MSR_DCD | UART_MSR_RI
+					| UART_MSR_CTS | UART_MSR_DSR);
+		regs[UART_MCR] = save_mcr;
+	}
+	return (msr == (UART_MSR_DCD | UART_MSR_CTS));
+}
+
+int ssb_extif_serial_init(struct ssb_extif *extif, struct ssb_serial_port *ports)
+{
+	u32 i, nr_ports = 0;
+
+	/* Disable GPIO interrupt initially */
+	extif_write32(extif, SSB_EXTIF_GPIO_INTPOL, 0);
+	extif_write32(extif, SSB_EXTIF_GPIO_INTMASK, 0);
+
+	for (i = 0; i < 2; i++) {
+		void __iomem *uart_regs;
+
+		uart_regs = ioremap(SSB_EUART, 16);
+		if (uart_regs) {
+			uart_regs += (i * 8);
+
+			if (serial_exists(uart_regs) && ports) {
+				extif_write32(extif, SSB_EXTIF_GPIO_INTMASK, 2);
+
+				nr_ports++;
+				ports[i].regs = uart_regs;
+				ports[i].irq = 2;
+				ports[i].baud_base = 13500000;
+				ports[i].reg_shift = 0;
+			}
+			iounmap(uart_regs);
+		}
+	}
+	return nr_ports;
+}
+#endif /* CONFIG_SSB_SERIAL */
+
+void ssb_extif_timing_init(struct ssb_extif *extif, unsigned long ns)
+{
+	u32 tmp;
+
+	/* Initialize extif so we can get to the LEDs and external UART */
+	extif_write32(extif, SSB_EXTIF_PROG_CFG, SSB_EXTCFG_EN);
+
+	/* Set timing for the flash */
+	tmp  = DIV_ROUND_UP(10, ns) << SSB_PROG_WCNT_3_SHIFT;
+	tmp |= DIV_ROUND_UP(40, ns) << SSB_PROG_WCNT_1_SHIFT;
+	tmp |= DIV_ROUND_UP(120, ns);
+	extif_write32(extif, SSB_EXTIF_PROG_WAITCNT, tmp);
+
+	/* Set programmable interface timing for external uart */
+	tmp  = DIV_ROUND_UP(10, ns) << SSB_PROG_WCNT_3_SHIFT;
+	tmp |= DIV_ROUND_UP(20, ns) << SSB_PROG_WCNT_2_SHIFT;
+	tmp |= DIV_ROUND_UP(100, ns) << SSB_PROG_WCNT_1_SHIFT;
+	tmp |= DIV_ROUND_UP(120, ns);
+	extif_write32(extif, SSB_EXTIF_PROG_WAITCNT, tmp);
+}
+
+void ssb_extif_get_clockcontrol(struct ssb_extif *extif,
+				u32 *pll_type, u32 *n, u32 *m)
+{
+	*pll_type = SSB_PLLTYPE_1;
+	*n = extif_read32(extif, SSB_EXTIF_CLOCK_N);
+	*m = extif_read32(extif, SSB_EXTIF_CLOCK_SB);
+}
+
+u32 ssb_extif_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks)
+{
+	struct ssb_extif *extif = bcm47xx_wdt_get_drvdata(wdt);
+
+	return ssb_extif_watchdog_timer_set(extif, ticks);
+}
+
+u32 ssb_extif_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms)
+{
+	struct ssb_extif *extif = bcm47xx_wdt_get_drvdata(wdt);
+	u32 ticks = (SSB_EXTIF_WATCHDOG_CLK / 1000) * ms;
+
+	ticks = ssb_extif_watchdog_timer_set(extif, ticks);
+
+	return (ticks * 1000) / SSB_EXTIF_WATCHDOG_CLK;
+}
+
+u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks)
+{
+	if (ticks > SSB_EXTIF_WATCHDOG_MAX_TIMER)
+		ticks = SSB_EXTIF_WATCHDOG_MAX_TIMER;
+	extif_write32(extif, SSB_EXTIF_WATCHDOG, ticks);
+
+	return ticks;
+}
+
+void ssb_extif_init(struct ssb_extif *extif)
+{
+	if (!extif->dev)
+		return; /* We don't have a Extif core */
+	spin_lock_init(&extif->gpio_lock);
+}
+
+u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask)
+{
+	return extif_read32(extif, SSB_EXTIF_GPIO_IN) & mask;
+}
+
+u32 ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_OUT(0),
+				   mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_OUTEN(0),
+				   mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_extif_gpio_polarity(struct ssb_extif *extif, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_INTPOL, mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
+}
+
+u32 ssb_extif_gpio_intmask(struct ssb_extif *extif, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_INTMASK, mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
+}

linux-7.2.3/drivers/ssb/driver_gige.c

@@ -0,0 +1,297 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom Gigabit Ethernet core driver
+ *
+ * Copyright 2008, Broadcom Corporation
+ * Copyright 2008, Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_driver_gige.h>
+#include <linux/export.h>
+#include <linux/pci.h>
+#include <linux/pci_regs.h>
+#include <linux/slab.h>
+
+
+/*
+MODULE_DESCRIPTION("SSB Broadcom Gigabit Ethernet driver");
+MODULE_AUTHOR("Michael Buesch");
+MODULE_LICENSE("GPL");
+*/
+
+static const struct ssb_device_id ssb_gige_tbl[] = {
+	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET_GBIT, SSB_ANY_REV),
+	{},
+};
+/* MODULE_DEVICE_TABLE(ssb, ssb_gige_tbl); */
+
+
+static inline u8 gige_read8(struct ssb_gige *dev, u16 offset)
+{
+	return ssb_read8(dev->dev, offset);
+}
+
+static inline u16 gige_read16(struct ssb_gige *dev, u16 offset)
+{
+	return ssb_read16(dev->dev, offset);
+}
+
+static inline u32 gige_read32(struct ssb_gige *dev, u16 offset)
+{
+	return ssb_read32(dev->dev, offset);
+}
+
+static inline void gige_write8(struct ssb_gige *dev,
+			       u16 offset, u8 value)
+{
+	ssb_write8(dev->dev, offset, value);
+}
+
+static inline void gige_write16(struct ssb_gige *dev,
+				u16 offset, u16 value)
+{
+	ssb_write16(dev->dev, offset, value);
+}
+
+static inline void gige_write32(struct ssb_gige *dev,
+				u16 offset, u32 value)
+{
+	ssb_write32(dev->dev, offset, value);
+}
+
+static inline
+u8 gige_pcicfg_read8(struct ssb_gige *dev, unsigned int offset)
+{
+	BUG_ON(offset >= 256);
+	return gige_read8(dev, SSB_GIGE_PCICFG + offset);
+}
+
+static inline
+u16 gige_pcicfg_read16(struct ssb_gige *dev, unsigned int offset)
+{
+	BUG_ON(offset >= 256);
+	return gige_read16(dev, SSB_GIGE_PCICFG + offset);
+}
+
+static inline
+u32 gige_pcicfg_read32(struct ssb_gige *dev, unsigned int offset)
+{
+	BUG_ON(offset >= 256);
+	return gige_read32(dev, SSB_GIGE_PCICFG + offset);
+}
+
+static inline
+void gige_pcicfg_write8(struct ssb_gige *dev,
+			unsigned int offset, u8 value)
+{
+	BUG_ON(offset >= 256);
+	gige_write8(dev, SSB_GIGE_PCICFG + offset, value);
+}
+
+static inline
+void gige_pcicfg_write16(struct ssb_gige *dev,
+			 unsigned int offset, u16 value)
+{
+	BUG_ON(offset >= 256);
+	gige_write16(dev, SSB_GIGE_PCICFG + offset, value);
+}
+
+static inline
+void gige_pcicfg_write32(struct ssb_gige *dev,
+			 unsigned int offset, u32 value)
+{
+	BUG_ON(offset >= 256);
+	gige_write32(dev, SSB_GIGE_PCICFG + offset, value);
+}
+
+static int ssb_gige_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+				    int reg, int size, u32 *val)
+{
+	struct ssb_gige *dev = container_of(bus->ops, struct ssb_gige, pci_ops);
+	unsigned long flags;
+
+	if ((PCI_SLOT(devfn) > 0) || (PCI_FUNC(devfn) > 0))
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	if (reg >= 256)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	spin_lock_irqsave(&dev->lock, flags);
+	switch (size) {
+	case 1:
+		*val = gige_pcicfg_read8(dev, reg);
+		break;
+	case 2:
+		*val = gige_pcicfg_read16(dev, reg);
+		break;
+	case 4:
+		*val = gige_pcicfg_read32(dev, reg);
+		break;
+	default:
+		WARN_ON(1);
+	}
+	spin_unlock_irqrestore(&dev->lock, flags);
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int ssb_gige_pci_write_config(struct pci_bus *bus, unsigned int devfn,
+				     int reg, int size, u32 val)
+{
+	struct ssb_gige *dev = container_of(bus->ops, struct ssb_gige, pci_ops);
+	unsigned long flags;
+
+	if ((PCI_SLOT(devfn) > 0) || (PCI_FUNC(devfn) > 0))
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	if (reg >= 256)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	spin_lock_irqsave(&dev->lock, flags);
+	switch (size) {
+	case 1:
+		gige_pcicfg_write8(dev, reg, val);
+		break;
+	case 2:
+		gige_pcicfg_write16(dev, reg, val);
+		break;
+	case 4:
+		gige_pcicfg_write32(dev, reg, val);
+		break;
+	default:
+		WARN_ON(1);
+	}
+	spin_unlock_irqrestore(&dev->lock, flags);
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int ssb_gige_probe(struct ssb_device *sdev,
+			  const struct ssb_device_id *id)
+{
+	struct ssb_gige *dev;
+	u32 base, tmslow, tmshigh;
+
+	dev = kzalloc_obj(*dev);
+	if (!dev)
+		return -ENOMEM;
+	dev->dev = sdev;
+
+	spin_lock_init(&dev->lock);
+	dev->pci_controller.pci_ops = &dev->pci_ops;
+	dev->pci_controller.io_resource = &dev->io_resource;
+	dev->pci_controller.mem_resource = &dev->mem_resource;
+	dev->pci_controller.io_map_base = 0x800;
+	dev->pci_ops.read = ssb_gige_pci_read_config;
+	dev->pci_ops.write = ssb_gige_pci_write_config;
+
+	dev->io_resource.name = SSB_GIGE_IO_RES_NAME;
+	dev->io_resource.start = 0x800;
+	dev->io_resource.end = 0x8FF;
+	dev->io_resource.flags = IORESOURCE_IO | IORESOURCE_PCI_FIXED;
+
+	if (!ssb_device_is_enabled(sdev))
+		ssb_device_enable(sdev, 0);
+
+	/* Setup BAR0. This is a 64k MMIO region. */
+	base = ssb_admatch_base(ssb_read32(sdev, SSB_ADMATCH1));
+	gige_pcicfg_write32(dev, PCI_BASE_ADDRESS_0, base);
+	gige_pcicfg_write32(dev, PCI_BASE_ADDRESS_1, 0);
+
+	dev->mem_resource.name = SSB_GIGE_MEM_RES_NAME;
+	dev->mem_resource.start = base;
+	dev->mem_resource.end = base + 0x10000 - 1;
+	dev->mem_resource.flags = IORESOURCE_MEM | IORESOURCE_PCI_FIXED;
+
+	/* Enable the memory region. */
+	gige_pcicfg_write16(dev, PCI_COMMAND,
+			    gige_pcicfg_read16(dev, PCI_COMMAND)
+			    | PCI_COMMAND_MEMORY);
+
+	/* Write flushing is controlled by the Flush Status Control register.
+	 * We want to flush every register write with a timeout and we want
+	 * to disable the IRQ mask while flushing to avoid concurrency.
+	 * Note that automatic write flushing does _not_ work from
+	 * an IRQ handler. The driver must flush manually by reading a register.
+	 */
+	gige_write32(dev, SSB_GIGE_SHIM_FLUSHSTAT, 0x00000068);
+
+	/* Check if we have an RGMII or GMII PHY-bus.
+	 * On RGMII do not bypass the DLLs */
+	tmslow = ssb_read32(sdev, SSB_TMSLOW);
+	tmshigh = ssb_read32(sdev, SSB_TMSHIGH);
+	if (tmshigh & SSB_GIGE_TMSHIGH_RGMII) {
+		tmslow &= ~SSB_GIGE_TMSLOW_TXBYPASS;
+		tmslow &= ~SSB_GIGE_TMSLOW_RXBYPASS;
+		dev->has_rgmii = 1;
+	} else {
+		tmslow |= SSB_GIGE_TMSLOW_TXBYPASS;
+		tmslow |= SSB_GIGE_TMSLOW_RXBYPASS;
+		dev->has_rgmii = 0;
+	}
+	tmslow |= SSB_GIGE_TMSLOW_DLLEN;
+	ssb_write32(sdev, SSB_TMSLOW, tmslow);
+
+	ssb_set_drvdata(sdev, dev);
+	register_pci_controller(&dev->pci_controller);
+
+	return 0;
+}
+
+bool pdev_is_ssb_gige_core(struct pci_dev *pdev)
+{
+	if (!pdev->resource[0].name)
+		return false;
+	return (strcmp(pdev->resource[0].name, SSB_GIGE_MEM_RES_NAME) == 0);
+}
+EXPORT_SYMBOL(pdev_is_ssb_gige_core);
+
+int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
+				   struct pci_dev *pdev)
+{
+	struct ssb_gige *dev = ssb_get_drvdata(sdev);
+	struct resource *res;
+
+	if (pdev->bus->ops != &dev->pci_ops) {
+		/* The PCI device is not on this SSB GigE bridge device. */
+		return -ENODEV;
+	}
+
+	/* Fixup the PCI resources. */
+	res = &(pdev->resource[0]);
+	res->flags = IORESOURCE_MEM | IORESOURCE_PCI_FIXED;
+	res->name = dev->mem_resource.name;
+	res->start = dev->mem_resource.start;
+	res->end = dev->mem_resource.end;
+
+	/* Fixup interrupt lines. */
+	pdev->irq = ssb_mips_irq(sdev) + 2;
+	pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, pdev->irq);
+
+	return 0;
+}
+
+int ssb_gige_map_irq(struct ssb_device *sdev,
+		     const struct pci_dev *pdev)
+{
+	struct ssb_gige *dev = ssb_get_drvdata(sdev);
+
+	if (pdev->bus->ops != &dev->pci_ops) {
+		/* The PCI device is not on this SSB GigE bridge device. */
+		return -ENODEV;
+	}
+
+	return ssb_mips_irq(sdev) + 2;
+}
+
+static struct ssb_driver ssb_gige_driver = {
+	.name		= "BCM-GigE",
+	.id_table	= ssb_gige_tbl,
+	.probe		= ssb_gige_probe,
+};
+
+int ssb_gige_init(void)
+{
+	return ssb_driver_register(&ssb_gige_driver);
+}

linux-7.2.3/drivers/ssb/driver_gpio.c

@@ -0,0 +1,482 @@
+/*
+ * Sonics Silicon Backplane
+ * GPIO driver
+ *
+ * Copyright 2011, Broadcom Corporation
+ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/gpio/driver.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/export.h>
+#include <linux/ssb/ssb.h>
+
+
+/**************************************************
+ * Shared
+ **************************************************/
+
+#if IS_ENABLED(CONFIG_SSB_EMBEDDED)
+static int ssb_gpio_to_irq(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	if (bus->bustype == SSB_BUSTYPE_SSB)
+		return irq_find_mapping(bus->irq_domain, gpio);
+	else
+		return -EINVAL;
+}
+#endif
+
+/**************************************************
+ * ChipCommon
+ **************************************************/
+
+static int ssb_gpio_chipco_get_value(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	return !!ssb_chipco_gpio_in(&bus->chipco, 1 << gpio);
+}
+
+static int ssb_gpio_chipco_set_value(struct gpio_chip *chip, unsigned int gpio,
+				     int value)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	ssb_chipco_gpio_out(&bus->chipco, 1 << gpio, value ? 1 << gpio : 0);
+
+	return 0;
+}
+
+static int ssb_gpio_chipco_direction_input(struct gpio_chip *chip,
+					   unsigned int gpio)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	ssb_chipco_gpio_outen(&bus->chipco, 1 << gpio, 0);
+	return 0;
+}
+
+static int ssb_gpio_chipco_direction_output(struct gpio_chip *chip,
+					    unsigned int gpio, int value)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	ssb_chipco_gpio_outen(&bus->chipco, 1 << gpio, 1 << gpio);
+	ssb_chipco_gpio_out(&bus->chipco, 1 << gpio, value ? 1 << gpio : 0);
+	return 0;
+}
+
+static int ssb_gpio_chipco_request(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	ssb_chipco_gpio_control(&bus->chipco, 1 << gpio, 0);
+	/* clear pulldown */
+	ssb_chipco_gpio_pulldown(&bus->chipco, 1 << gpio, 0);
+	/* Set pullup */
+	ssb_chipco_gpio_pullup(&bus->chipco, 1 << gpio, 1 << gpio);
+
+	return 0;
+}
+
+static void ssb_gpio_chipco_free(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	/* clear pullup */
+	ssb_chipco_gpio_pullup(&bus->chipco, 1 << gpio, 0);
+}
+
+#if IS_ENABLED(CONFIG_SSB_EMBEDDED)
+static void ssb_gpio_irq_chipco_mask(struct irq_data *d)
+{
+	struct ssb_bus *bus = irq_data_get_irq_chip_data(d);
+	int gpio = irqd_to_hwirq(d);
+
+	ssb_chipco_gpio_intmask(&bus->chipco, BIT(gpio), 0);
+}
+
+static void ssb_gpio_irq_chipco_unmask(struct irq_data *d)
+{
+	struct ssb_bus *bus = irq_data_get_irq_chip_data(d);
+	int gpio = irqd_to_hwirq(d);
+	u32 val = ssb_chipco_gpio_in(&bus->chipco, BIT(gpio));
+
+	ssb_chipco_gpio_polarity(&bus->chipco, BIT(gpio), val);
+	ssb_chipco_gpio_intmask(&bus->chipco, BIT(gpio), BIT(gpio));
+}
+
+static struct irq_chip ssb_gpio_irq_chipco_chip = {
+	.name		= "SSB-GPIO-CC",
+	.irq_mask	= ssb_gpio_irq_chipco_mask,
+	.irq_unmask	= ssb_gpio_irq_chipco_unmask,
+};
+
+static irqreturn_t ssb_gpio_irq_chipco_handler(int irq, void *dev_id)
+{
+	struct ssb_bus *bus = dev_id;
+	struct ssb_chipcommon *chipco = &bus->chipco;
+	u32 val = chipco_read32(chipco, SSB_CHIPCO_GPIOIN);
+	u32 mask = chipco_read32(chipco, SSB_CHIPCO_GPIOIRQ);
+	u32 pol = chipco_read32(chipco, SSB_CHIPCO_GPIOPOL);
+	unsigned long irqs = (val ^ pol) & mask;
+	int gpio;
+
+	if (!irqs)
+		return IRQ_NONE;
+
+	for_each_set_bit(gpio, &irqs, bus->gpio.ngpio)
+		generic_handle_domain_irq_safe(bus->irq_domain, gpio);
+
+	ssb_chipco_gpio_polarity(chipco, irqs, val & irqs);
+
+	return IRQ_HANDLED;
+}
+
+static int ssb_gpio_irq_chipco_domain_init(struct ssb_bus *bus)
+{
+	struct ssb_chipcommon *chipco = &bus->chipco;
+	struct gpio_chip *chip = &bus->gpio;
+	int gpio, hwirq, err;
+
+	if (bus->bustype != SSB_BUSTYPE_SSB)
+		return 0;
+
+	bus->irq_domain = irq_domain_create_linear(NULL, chip->ngpio, &irq_domain_simple_ops,
+						   chipco);
+	if (!bus->irq_domain) {
+		err = -ENODEV;
+		goto err_irq_domain;
+	}
+	for (gpio = 0; gpio < chip->ngpio; gpio++) {
+		int irq = irq_create_mapping(bus->irq_domain, gpio);
+
+		irq_set_chip_data(irq, bus);
+		irq_set_chip_and_handler(irq, &ssb_gpio_irq_chipco_chip,
+					 handle_simple_irq);
+	}
+
+	hwirq = ssb_mips_irq(bus->chipco.dev) + 2;
+	err = request_irq(hwirq, ssb_gpio_irq_chipco_handler, IRQF_SHARED,
+			  "gpio", bus);
+	if (err)
+		goto err_req_irq;
+
+	ssb_chipco_gpio_intmask(&bus->chipco, ~0, 0);
+	chipco_set32(chipco, SSB_CHIPCO_IRQMASK, SSB_CHIPCO_IRQ_GPIO);
+
+	return 0;
+
+err_req_irq:
+	for (gpio = 0; gpio < chip->ngpio; gpio++) {
+		int irq = irq_find_mapping(bus->irq_domain, gpio);
+
+		irq_dispose_mapping(irq);
+	}
+	irq_domain_remove(bus->irq_domain);
+err_irq_domain:
+	return err;
+}
+
+static void ssb_gpio_irq_chipco_domain_exit(struct ssb_bus *bus)
+{
+	struct ssb_chipcommon *chipco = &bus->chipco;
+	struct gpio_chip *chip = &bus->gpio;
+	int gpio;
+
+	if (bus->bustype != SSB_BUSTYPE_SSB)
+		return;
+
+	chipco_mask32(chipco, SSB_CHIPCO_IRQMASK, ~SSB_CHIPCO_IRQ_GPIO);
+	free_irq(ssb_mips_irq(bus->chipco.dev) + 2, chipco);
+	for (gpio = 0; gpio < chip->ngpio; gpio++) {
+		int irq = irq_find_mapping(bus->irq_domain, gpio);
+
+		irq_dispose_mapping(irq);
+	}
+	irq_domain_remove(bus->irq_domain);
+}
+#else
+static int ssb_gpio_irq_chipco_domain_init(struct ssb_bus *bus)
+{
+	return 0;
+}
+
+static void ssb_gpio_irq_chipco_domain_exit(struct ssb_bus *bus)
+{
+}
+#endif
+
+static int ssb_gpio_chipco_init(struct ssb_bus *bus)
+{
+	struct gpio_chip *chip = &bus->gpio;
+	int err;
+
+	chip->label		= "ssb_chipco_gpio";
+	chip->owner		= THIS_MODULE;
+	chip->request		= ssb_gpio_chipco_request;
+	chip->free		= ssb_gpio_chipco_free;
+	chip->get		= ssb_gpio_chipco_get_value;
+	chip->set		= ssb_gpio_chipco_set_value;
+	chip->direction_input	= ssb_gpio_chipco_direction_input;
+	chip->direction_output	= ssb_gpio_chipco_direction_output;
+#if IS_ENABLED(CONFIG_SSB_EMBEDDED)
+	chip->to_irq		= ssb_gpio_to_irq;
+#endif
+	chip->ngpio		= 16;
+	/* There is just one SoC in one device and its GPIO addresses should be
+	 * deterministic to address them more easily. The other buses could get
+	 * a random base number.
+	 */
+	if (bus->bustype == SSB_BUSTYPE_SSB)
+		chip->base		= 0;
+	else
+		chip->base		= -1;
+
+	err = ssb_gpio_irq_chipco_domain_init(bus);
+	if (err)
+		return err;
+
+	err = gpiochip_add_data(chip, bus);
+	if (err) {
+		ssb_gpio_irq_chipco_domain_exit(bus);
+		return err;
+	}
+
+	return 0;
+}
+
+/**************************************************
+ * EXTIF
+ **************************************************/
+
+#ifdef CONFIG_SSB_DRIVER_EXTIF
+
+static int ssb_gpio_extif_get_value(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	return !!ssb_extif_gpio_in(&bus->extif, 1 << gpio);
+}
+
+static int ssb_gpio_extif_set_value(struct gpio_chip *chip, unsigned int gpio,
+				    int value)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	ssb_extif_gpio_out(&bus->extif, 1 << gpio, value ? 1 << gpio : 0);
+
+	return 0;
+}
+
+static int ssb_gpio_extif_direction_input(struct gpio_chip *chip,
+					  unsigned int gpio)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	ssb_extif_gpio_outen(&bus->extif, 1 << gpio, 0);
+	return 0;
+}
+
+static int ssb_gpio_extif_direction_output(struct gpio_chip *chip,
+					   unsigned int gpio, int value)
+{
+	struct ssb_bus *bus = gpiochip_get_data(chip);
+
+	ssb_extif_gpio_outen(&bus->extif, 1 << gpio, 1 << gpio);
+	ssb_extif_gpio_out(&bus->extif, 1 << gpio, value ? 1 << gpio : 0);
+	return 0;
+}
+
+#if IS_ENABLED(CONFIG_SSB_EMBEDDED)
+static void ssb_gpio_irq_extif_mask(struct irq_data *d)
+{
+	struct ssb_bus *bus = irq_data_get_irq_chip_data(d);
+	int gpio = irqd_to_hwirq(d);
+
+	ssb_extif_gpio_intmask(&bus->extif, BIT(gpio), 0);
+}
+
+static void ssb_gpio_irq_extif_unmask(struct irq_data *d)
+{
+	struct ssb_bus *bus = irq_data_get_irq_chip_data(d);
+	int gpio = irqd_to_hwirq(d);
+	u32 val = ssb_extif_gpio_in(&bus->extif, BIT(gpio));
+
+	ssb_extif_gpio_polarity(&bus->extif, BIT(gpio), val);
+	ssb_extif_gpio_intmask(&bus->extif, BIT(gpio), BIT(gpio));
+}
+
+static struct irq_chip ssb_gpio_irq_extif_chip = {
+	.name		= "SSB-GPIO-EXTIF",
+	.irq_mask	= ssb_gpio_irq_extif_mask,
+	.irq_unmask	= ssb_gpio_irq_extif_unmask,
+};
+
+static irqreturn_t ssb_gpio_irq_extif_handler(int irq, void *dev_id)
+{
+	struct ssb_bus *bus = dev_id;
+	struct ssb_extif *extif = &bus->extif;
+	u32 val = ssb_read32(extif->dev, SSB_EXTIF_GPIO_IN);
+	u32 mask = ssb_read32(extif->dev, SSB_EXTIF_GPIO_INTMASK);
+	u32 pol = ssb_read32(extif->dev, SSB_EXTIF_GPIO_INTPOL);
+	unsigned long irqs = (val ^ pol) & mask;
+	int gpio;
+
+	if (!irqs)
+		return IRQ_NONE;
+
+	for_each_set_bit(gpio, &irqs, bus->gpio.ngpio)
+		generic_handle_domain_irq_safe(bus->irq_domain, gpio);
+
+	ssb_extif_gpio_polarity(extif, irqs, val & irqs);
+
+	return IRQ_HANDLED;
+}
+
+static int ssb_gpio_irq_extif_domain_init(struct ssb_bus *bus)
+{
+	struct ssb_extif *extif = &bus->extif;
+	struct gpio_chip *chip = &bus->gpio;
+	int gpio, hwirq, err;
+
+	if (bus->bustype != SSB_BUSTYPE_SSB)
+		return 0;
+
+	bus->irq_domain = irq_domain_create_linear(NULL, chip->ngpio, &irq_domain_simple_ops,
+						   extif);
+	if (!bus->irq_domain) {
+		err = -ENODEV;
+		goto err_irq_domain;
+	}
+	for (gpio = 0; gpio < chip->ngpio; gpio++) {
+		int irq = irq_create_mapping(bus->irq_domain, gpio);
+
+		irq_set_chip_data(irq, bus);
+		irq_set_chip_and_handler(irq, &ssb_gpio_irq_extif_chip,
+					 handle_simple_irq);
+	}
+
+	hwirq = ssb_mips_irq(bus->extif.dev) + 2;
+	err = request_irq(hwirq, ssb_gpio_irq_extif_handler, IRQF_SHARED,
+			  "gpio", bus);
+	if (err)
+		goto err_req_irq;
+
+	ssb_extif_gpio_intmask(&bus->extif, ~0, 0);
+
+	return 0;
+
+err_req_irq:
+	for (gpio = 0; gpio < chip->ngpio; gpio++) {
+		int irq = irq_find_mapping(bus->irq_domain, gpio);
+
+		irq_dispose_mapping(irq);
+	}
+	irq_domain_remove(bus->irq_domain);
+err_irq_domain:
+	return err;
+}
+
+static void ssb_gpio_irq_extif_domain_exit(struct ssb_bus *bus)
+{
+	struct ssb_extif *extif = &bus->extif;
+	struct gpio_chip *chip = &bus->gpio;
+	int gpio;
+
+	if (bus->bustype != SSB_BUSTYPE_SSB)
+		return;
+
+	free_irq(ssb_mips_irq(bus->extif.dev) + 2, extif);
+	for (gpio = 0; gpio < chip->ngpio; gpio++) {
+		int irq = irq_find_mapping(bus->irq_domain, gpio);
+
+		irq_dispose_mapping(irq);
+	}
+	irq_domain_remove(bus->irq_domain);
+}
+#else
+static int ssb_gpio_irq_extif_domain_init(struct ssb_bus *bus)
+{
+	return 0;
+}
+
+static void ssb_gpio_irq_extif_domain_exit(struct ssb_bus *bus)
+{
+}
+#endif
+
+static int ssb_gpio_extif_init(struct ssb_bus *bus)
+{
+	struct gpio_chip *chip = &bus->gpio;
+	int err;
+
+	chip->label		= "ssb_extif_gpio";
+	chip->owner		= THIS_MODULE;
+	chip->get		= ssb_gpio_extif_get_value;
+	chip->set		= ssb_gpio_extif_set_value;
+	chip->direction_input	= ssb_gpio_extif_direction_input;
+	chip->direction_output	= ssb_gpio_extif_direction_output;
+#if IS_ENABLED(CONFIG_SSB_EMBEDDED)
+	chip->to_irq		= ssb_gpio_to_irq;
+#endif
+	chip->ngpio		= 5;
+	/* There is just one SoC in one device and its GPIO addresses should be
+	 * deterministic to address them more easily. The other buses could get
+	 * a random base number.
+	 */
+	if (bus->bustype == SSB_BUSTYPE_SSB)
+		chip->base		= 0;
+	else
+		chip->base		= -1;
+
+	err = ssb_gpio_irq_extif_domain_init(bus);
+	if (err)
+		return err;
+
+	err = gpiochip_add_data(chip, bus);
+	if (err) {
+		ssb_gpio_irq_extif_domain_exit(bus);
+		return err;
+	}
+
+	return 0;
+}
+
+#else
+static int ssb_gpio_extif_init(struct ssb_bus *bus)
+{
+	return -ENOTSUPP;
+}
+#endif
+
+/**************************************************
+ * Init
+ **************************************************/
+
+int ssb_gpio_init(struct ssb_bus *bus)
+{
+	if (ssb_chipco_available(&bus->chipco))
+		return ssb_gpio_chipco_init(bus);
+	else if (ssb_extif_available(&bus->extif))
+		return ssb_gpio_extif_init(bus);
+	return -1;
+}
+
+int ssb_gpio_unregister(struct ssb_bus *bus)
+{
+	if (ssb_chipco_available(&bus->chipco) ||
+	    ssb_extif_available(&bus->extif)) {
+		gpiochip_remove(&bus->gpio);
+		return 0;
+	}
+	return -1;
+}

linux-7.2.3/drivers/ssb/driver_mipscore.c

@@ -0,0 +1,356 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom MIPS core driver
+ *
+ * Copyright 2005, Broadcom Corporation
+ * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+
+#include <linux/mtd/physmap.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/serial_reg.h>
+#include <linux/time.h>
+#ifdef CONFIG_BCM47XX
+#include <linux/bcm47xx_nvram.h>
+#endif
+
+static const char * const part_probes[] = { "bcm47xxpart", NULL };
+
+static struct physmap_flash_data ssb_pflash_data = {
+	.part_probe_types	= part_probes,
+};
+
+static struct resource ssb_pflash_resource = {
+	.name	= "ssb_pflash",
+	.flags  = IORESOURCE_MEM,
+};
+
+struct platform_device ssb_pflash_dev = {
+	.name		= "physmap-flash",
+	.dev		= {
+		.platform_data  = &ssb_pflash_data,
+	},
+	.resource	= &ssb_pflash_resource,
+	.num_resources	= 1,
+};
+
+static inline u32 mips_read32(struct ssb_mipscore *mcore,
+			      u16 offset)
+{
+	return ssb_read32(mcore->dev, offset);
+}
+
+static inline void mips_write32(struct ssb_mipscore *mcore,
+				u16 offset,
+				u32 value)
+{
+	ssb_write32(mcore->dev, offset, value);
+}
+
+static const u32 ipsflag_irq_mask[] = {
+	0,
+	SSB_IPSFLAG_IRQ1,
+	SSB_IPSFLAG_IRQ2,
+	SSB_IPSFLAG_IRQ3,
+	SSB_IPSFLAG_IRQ4,
+};
+
+static const u32 ipsflag_irq_shift[] = {
+	0,
+	SSB_IPSFLAG_IRQ1_SHIFT,
+	SSB_IPSFLAG_IRQ2_SHIFT,
+	SSB_IPSFLAG_IRQ3_SHIFT,
+	SSB_IPSFLAG_IRQ4_SHIFT,
+};
+
+static inline u32 ssb_irqflag(struct ssb_device *dev)
+{
+	u32 tpsflag = ssb_read32(dev, SSB_TPSFLAG);
+	if (tpsflag)
+		return ssb_read32(dev, SSB_TPSFLAG) & SSB_TPSFLAG_BPFLAG;
+	else
+		/* not irq supported */
+		return 0x3f;
+}
+
+static struct ssb_device *find_device(struct ssb_device *rdev, int irqflag)
+{
+	struct ssb_bus *bus = rdev->bus;
+	int i;
+	for (i = 0; i < bus->nr_devices; i++) {
+		struct ssb_device *dev;
+		dev = &(bus->devices[i]);
+		if (ssb_irqflag(dev) == irqflag)
+			return dev;
+	}
+	return NULL;
+}
+
+/* Get the MIPS IRQ assignment for a specified device.
+ * If unassigned, 0 is returned.
+ * If disabled, 5 is returned.
+ * If not supported, 6 is returned.
+ */
+unsigned int ssb_mips_irq(struct ssb_device *dev)
+{
+	struct ssb_bus *bus = dev->bus;
+	struct ssb_device *mdev = bus->mipscore.dev;
+	u32 irqflag;
+	u32 ipsflag;
+	u32 tmp;
+	unsigned int irq;
+
+	irqflag = ssb_irqflag(dev);
+	if (irqflag == 0x3f)
+		return 6;
+	ipsflag = ssb_read32(bus->mipscore.dev, SSB_IPSFLAG);
+	for (irq = 1; irq <= 4; irq++) {
+		tmp = ((ipsflag & ipsflag_irq_mask[irq]) >> ipsflag_irq_shift[irq]);
+		if (tmp == irqflag)
+			break;
+	}
+	if (irq	== 5) {
+		if ((1 << irqflag) & ssb_read32(mdev, SSB_INTVEC))
+			irq = 0;
+	}
+
+	return irq;
+}
+
+static void clear_irq(struct ssb_bus *bus, unsigned int irq)
+{
+	struct ssb_device *dev = bus->mipscore.dev;
+
+	/* Clear the IRQ in the MIPScore backplane registers */
+	if (irq == 0) {
+		ssb_write32(dev, SSB_INTVEC, 0);
+	} else {
+		ssb_write32(dev, SSB_IPSFLAG,
+			    ssb_read32(dev, SSB_IPSFLAG) |
+			    ipsflag_irq_mask[irq]);
+	}
+}
+
+static void set_irq(struct ssb_device *dev, unsigned int irq)
+{
+	unsigned int oldirq = ssb_mips_irq(dev);
+	struct ssb_bus *bus = dev->bus;
+	struct ssb_device *mdev = bus->mipscore.dev;
+	u32 irqflag = ssb_irqflag(dev);
+
+	BUG_ON(oldirq == 6);
+
+	dev->irq = irq + 2;
+
+	/* clear the old irq */
+	if (oldirq == 0)
+		ssb_write32(mdev, SSB_INTVEC, (~(1 << irqflag) & ssb_read32(mdev, SSB_INTVEC)));
+	else if (oldirq != 5)
+		clear_irq(bus, oldirq);
+
+	/* assign the new one */
+	if (irq == 0) {
+		ssb_write32(mdev, SSB_INTVEC, ((1 << irqflag) | ssb_read32(mdev, SSB_INTVEC)));
+	} else {
+		u32 ipsflag = ssb_read32(mdev, SSB_IPSFLAG);
+		if ((ipsflag & ipsflag_irq_mask[irq]) != ipsflag_irq_mask[irq]) {
+			u32 oldipsflag = (ipsflag & ipsflag_irq_mask[irq]) >> ipsflag_irq_shift[irq];
+			struct ssb_device *olddev = find_device(dev, oldipsflag);
+			if (olddev)
+				set_irq(olddev, 0);
+		}
+		irqflag <<= ipsflag_irq_shift[irq];
+		irqflag |= (ipsflag & ~ipsflag_irq_mask[irq]);
+		ssb_write32(mdev, SSB_IPSFLAG, irqflag);
+	}
+	dev_dbg(dev->dev, "set_irq: core 0x%04x, irq %d => %d\n",
+		dev->id.coreid, oldirq+2, irq+2);
+}
+
+static void print_irq(struct ssb_device *dev, unsigned int irq)
+{
+	static const char *irq_name[] = {"2(S)", "3", "4", "5", "6", "D", "I"};
+	dev_dbg(dev->dev,
+		"core 0x%04x, irq : %s%s %s%s %s%s %s%s %s%s %s%s %s%s\n",
+		dev->id.coreid,
+		irq_name[0], irq == 0 ? "*" : " ",
+		irq_name[1], irq == 1 ? "*" : " ",
+		irq_name[2], irq == 2 ? "*" : " ",
+		irq_name[3], irq == 3 ? "*" : " ",
+		irq_name[4], irq == 4 ? "*" : " ",
+		irq_name[5], irq == 5 ? "*" : " ",
+		irq_name[6], irq == 6 ? "*" : " ");
+}
+
+static void dump_irq(struct ssb_bus *bus)
+{
+	int i;
+	for (i = 0; i < bus->nr_devices; i++) {
+		struct ssb_device *dev;
+		dev = &(bus->devices[i]);
+		print_irq(dev, ssb_mips_irq(dev));
+	}
+}
+
+static void ssb_mips_serial_init(struct ssb_mipscore *mcore)
+{
+	struct ssb_bus *bus = mcore->dev->bus;
+
+	if (ssb_extif_available(&bus->extif))
+		mcore->nr_serial_ports = ssb_extif_serial_init(&bus->extif, mcore->serial_ports);
+	else if (ssb_chipco_available(&bus->chipco))
+		mcore->nr_serial_ports = ssb_chipco_serial_init(&bus->chipco, mcore->serial_ports);
+	else
+		mcore->nr_serial_ports = 0;
+}
+
+static void ssb_mips_flash_detect(struct ssb_mipscore *mcore)
+{
+	struct ssb_bus *bus = mcore->dev->bus;
+	struct ssb_sflash *sflash = &mcore->sflash;
+	struct ssb_pflash *pflash = &mcore->pflash;
+
+	/* When there is no chipcommon on the bus there is 4MB flash */
+	if (!ssb_chipco_available(&bus->chipco)) {
+		pflash->present = true;
+		pflash->buswidth = 2;
+		pflash->window = SSB_FLASH1;
+		pflash->window_size = SSB_FLASH1_SZ;
+		goto ssb_pflash;
+	}
+
+	/* There is ChipCommon, so use it to read info about flash */
+	switch (bus->chipco.capabilities & SSB_CHIPCO_CAP_FLASHT) {
+	case SSB_CHIPCO_FLASHT_STSER:
+	case SSB_CHIPCO_FLASHT_ATSER:
+		dev_dbg(mcore->dev->dev, "Found serial flash\n");
+		ssb_sflash_init(&bus->chipco);
+		break;
+	case SSB_CHIPCO_FLASHT_PARA:
+		dev_dbg(mcore->dev->dev, "Found parallel flash\n");
+		pflash->present = true;
+		pflash->window = SSB_FLASH2;
+		pflash->window_size = SSB_FLASH2_SZ;
+		if ((ssb_read32(bus->chipco.dev, SSB_CHIPCO_FLASH_CFG)
+		               & SSB_CHIPCO_CFG_DS16) == 0)
+			pflash->buswidth = 1;
+		else
+			pflash->buswidth = 2;
+		break;
+	}
+
+ssb_pflash:
+	if (sflash->present) {
+#ifdef CONFIG_BCM47XX
+		bcm47xx_nvram_init_from_mem(sflash->window, sflash->size);
+#endif
+	} else if (pflash->present) {
+#ifdef CONFIG_BCM47XX
+		bcm47xx_nvram_init_from_mem(pflash->window, pflash->window_size);
+#endif
+
+		ssb_pflash_data.width = pflash->buswidth;
+		ssb_pflash_resource.start = pflash->window;
+		ssb_pflash_resource.end = pflash->window + pflash->window_size;
+	}
+}
+
+u32 ssb_cpu_clock(struct ssb_mipscore *mcore)
+{
+	struct ssb_bus *bus = mcore->dev->bus;
+	u32 pll_type, n, m, rate = 0;
+
+	if (bus->chipco.capabilities & SSB_CHIPCO_CAP_PMU)
+		return ssb_pmu_get_cpu_clock(&bus->chipco);
+
+	if (ssb_extif_available(&bus->extif)) {
+		ssb_extif_get_clockcontrol(&bus->extif, &pll_type, &n, &m);
+	} else if (ssb_chipco_available(&bus->chipco)) {
+		ssb_chipco_get_clockcpu(&bus->chipco, &pll_type, &n, &m);
+	} else
+		return 0;
+
+	if ((pll_type == SSB_PLLTYPE_5) || (bus->chip_id == 0x5365)) {
+		rate = 200000000;
+	} else {
+		rate = ssb_calc_clock_rate(pll_type, n, m);
+	}
+
+	if (pll_type == SSB_PLLTYPE_6) {
+		rate *= 2;
+	}
+
+	return rate;
+}
+
+void ssb_mipscore_init(struct ssb_mipscore *mcore)
+{
+	struct ssb_bus *bus;
+	struct ssb_device *dev;
+	unsigned long hz, ns;
+	unsigned int irq, i;
+
+	if (!mcore->dev)
+		return; /* We don't have a MIPS core */
+
+	dev_dbg(mcore->dev->dev, "Initializing MIPS core...\n");
+
+	bus = mcore->dev->bus;
+	hz = ssb_clockspeed(bus);
+	if (!hz)
+		hz = 100000000;
+	ns = 1000000000 / hz;
+
+	if (ssb_extif_available(&bus->extif))
+		ssb_extif_timing_init(&bus->extif, ns);
+	else if (ssb_chipco_available(&bus->chipco))
+		ssb_chipco_timing_init(&bus->chipco, ns);
+
+	/* Assign IRQs to all cores on the bus, start with irq line 2, because serial usually takes 1 */
+	for (irq = 2, i = 0; i < bus->nr_devices; i++) {
+		int mips_irq;
+		dev = &(bus->devices[i]);
+		mips_irq = ssb_mips_irq(dev);
+		if (mips_irq > 4)
+			dev->irq = 0;
+		else
+			dev->irq = mips_irq + 2;
+		if (dev->irq > 5)
+			continue;
+		switch (dev->id.coreid) {
+		case SSB_DEV_USB11_HOST:
+			/* shouldn't need a separate irq line for non-4710, most of them have a proper
+			 * external usb controller on the pci */
+			if ((bus->chip_id == 0x4710) && (irq <= 4)) {
+				set_irq(dev, irq++);
+			}
+			break;
+		case SSB_DEV_PCI:
+		case SSB_DEV_ETHERNET:
+		case SSB_DEV_ETHERNET_GBIT:
+		case SSB_DEV_80211:
+		case SSB_DEV_USB20_HOST:
+			/* These devices get their own IRQ line if available, the rest goes on IRQ0 */
+			if (irq <= 4) {
+				set_irq(dev, irq++);
+				break;
+			}
+			fallthrough;
+		case SSB_DEV_EXTIF:
+			set_irq(dev, 0);
+			break;
+		}
+	}
+	dev_dbg(mcore->dev->dev, "after irq reconfiguration\n");
+	dump_irq(bus);
+
+	ssb_mips_serial_init(mcore);
+	ssb_mips_flash_detect(mcore);
+}

linux-7.2.3/drivers/ssb/driver_pcicore.c

@@ -0,0 +1,742 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom PCI-core driver
+ *
+ * Copyright 2005, Broadcom Corporation
+ * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/pci.h>
+#include <linux/export.h>
+#include <linux/delay.h>
+#include <linux/ssb/ssb_embedded.h>
+
+static u32 ssb_pcie_read(struct ssb_pcicore *pc, u32 address);
+static void ssb_pcie_write(struct ssb_pcicore *pc, u32 address, u32 data);
+static u16 ssb_pcie_mdio_read(struct ssb_pcicore *pc, u8 device, u8 address);
+static void ssb_pcie_mdio_write(struct ssb_pcicore *pc, u8 device,
+				u8 address, u16 data);
+
+static inline
+u32 pcicore_read32(struct ssb_pcicore *pc, u16 offset)
+{
+	return ssb_read32(pc->dev, offset);
+}
+
+static inline
+void pcicore_write32(struct ssb_pcicore *pc, u16 offset, u32 value)
+{
+	ssb_write32(pc->dev, offset, value);
+}
+
+static inline
+u16 pcicore_read16(struct ssb_pcicore *pc, u16 offset)
+{
+	return ssb_read16(pc->dev, offset);
+}
+
+static inline
+void pcicore_write16(struct ssb_pcicore *pc, u16 offset, u16 value)
+{
+	ssb_write16(pc->dev, offset, value);
+}
+
+/**************************************************
+ * Code for hostmode operation.
+ **************************************************/
+
+#ifdef CONFIG_SSB_PCICORE_HOSTMODE
+
+#include <asm/paccess.h>
+/* Probe a 32bit value on the bus and catch bus exceptions.
+ * Returns nonzero on a bus exception.
+ * This is MIPS specific
+ */
+#define mips_busprobe32(val, addr)	get_dbe((val), ((u32 *)(addr)))
+
+/* Assume one-hot slot wiring */
+#define SSB_PCI_SLOT_MAX	16
+
+/* Global lock is OK, as we won't have more than one extpci anyway. */
+static DEFINE_SPINLOCK(cfgspace_lock);
+/* Core to access the external PCI config space. Can only have one. */
+static struct ssb_pcicore *extpci_core;
+
+
+static u32 get_cfgspace_addr(struct ssb_pcicore *pc,
+			     unsigned int bus, unsigned int dev,
+			     unsigned int func, unsigned int off)
+{
+	u32 addr = 0;
+	u32 tmp;
+
+	/* We do only have one cardbus device behind the bridge. */
+	if (pc->cardbusmode && (dev > 1))
+		goto out;
+
+	if (bus == 0) {
+		/* Type 0 transaction */
+		if (unlikely(dev >= SSB_PCI_SLOT_MAX))
+			goto out;
+		/* Slide the window */
+		tmp = SSB_PCICORE_SBTOPCI_CFG0;
+		tmp |= ((1 << (dev + 16)) & SSB_PCICORE_SBTOPCI1_MASK);
+		pcicore_write32(pc, SSB_PCICORE_SBTOPCI1, tmp);
+		/* Calculate the address */
+		addr = SSB_PCI_CFG;
+		addr |= ((1 << (dev + 16)) & ~SSB_PCICORE_SBTOPCI1_MASK);
+		addr |= (func << 8);
+		addr |= (off & ~3);
+	} else {
+		/* Type 1 transaction */
+		pcicore_write32(pc, SSB_PCICORE_SBTOPCI1,
+				SSB_PCICORE_SBTOPCI_CFG1);
+		/* Calculate the address */
+		addr = SSB_PCI_CFG;
+		addr |= (bus << 16);
+		addr |= (dev << 11);
+		addr |= (func << 8);
+		addr |= (off & ~3);
+	}
+out:
+	return addr;
+}
+
+static int ssb_extpci_read_config(struct ssb_pcicore *pc,
+				  unsigned int bus, unsigned int dev,
+				  unsigned int func, unsigned int off,
+				  void *buf, int len)
+{
+	int err = -EINVAL;
+	u32 addr, val;
+	void __iomem *mmio;
+
+	WARN_ON(!pc->hostmode);
+	if (unlikely(len != 1 && len != 2 && len != 4))
+		goto out;
+	addr = get_cfgspace_addr(pc, bus, dev, func, off);
+	if (unlikely(!addr))
+		goto out;
+	err = -ENOMEM;
+	mmio = ioremap(addr, len);
+	if (!mmio)
+		goto out;
+
+	if (mips_busprobe32(val, mmio)) {
+		val = 0xffffffff;
+		goto unmap;
+	}
+
+	val = readl(mmio);
+	val >>= (8 * (off & 3));
+
+	switch (len) {
+	case 1:
+		*((u8 *)buf) = (u8)val;
+		break;
+	case 2:
+		*((u16 *)buf) = (u16)val;
+		break;
+	case 4:
+		*((u32 *)buf) = (u32)val;
+		break;
+	}
+	err = 0;
+unmap:
+	iounmap(mmio);
+out:
+	return err;
+}
+
+static int ssb_extpci_write_config(struct ssb_pcicore *pc,
+				   unsigned int bus, unsigned int dev,
+				   unsigned int func, unsigned int off,
+				   const void *buf, int len)
+{
+	int err = -EINVAL;
+	u32 addr, val = 0;
+	void __iomem *mmio;
+
+	WARN_ON(!pc->hostmode);
+	if (unlikely(len != 1 && len != 2 && len != 4))
+		goto out;
+	addr = get_cfgspace_addr(pc, bus, dev, func, off);
+	if (unlikely(!addr))
+		goto out;
+	err = -ENOMEM;
+	mmio = ioremap(addr, len);
+	if (!mmio)
+		goto out;
+
+	if (mips_busprobe32(val, mmio)) {
+		val = 0xffffffff;
+		goto unmap;
+	}
+
+	switch (len) {
+	case 1:
+		val = readl(mmio);
+		val &= ~(0xFF << (8 * (off & 3)));
+		val |= *((const u8 *)buf) << (8 * (off & 3));
+		break;
+	case 2:
+		val = readl(mmio);
+		val &= ~(0xFFFF << (8 * (off & 3)));
+		val |= *((const u16 *)buf) << (8 * (off & 3));
+		break;
+	case 4:
+		val = *((const u32 *)buf);
+		break;
+	}
+	writel(val, mmio);
+
+	err = 0;
+unmap:
+	iounmap(mmio);
+out:
+	return err;
+}
+
+static int ssb_pcicore_read_config(struct pci_bus *bus, unsigned int devfn,
+				   int reg, int size, u32 *val)
+{
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&cfgspace_lock, flags);
+	err = ssb_extpci_read_config(extpci_core, bus->number, PCI_SLOT(devfn),
+				     PCI_FUNC(devfn), reg, val, size);
+	spin_unlock_irqrestore(&cfgspace_lock, flags);
+
+	return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
+}
+
+static int ssb_pcicore_write_config(struct pci_bus *bus, unsigned int devfn,
+				    int reg, int size, u32 val)
+{
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&cfgspace_lock, flags);
+	err = ssb_extpci_write_config(extpci_core, bus->number, PCI_SLOT(devfn),
+				      PCI_FUNC(devfn), reg, &val, size);
+	spin_unlock_irqrestore(&cfgspace_lock, flags);
+
+	return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops ssb_pcicore_pciops = {
+	.read	= ssb_pcicore_read_config,
+	.write	= ssb_pcicore_write_config,
+};
+
+static struct resource ssb_pcicore_mem_resource = {
+	.name	= "SSB PCIcore external memory",
+	.start	= SSB_PCI_DMA,
+	.end	= SSB_PCI_DMA + SSB_PCI_DMA_SZ - 1,
+	.flags	= IORESOURCE_MEM | IORESOURCE_PCI_FIXED,
+};
+
+static struct resource ssb_pcicore_io_resource = {
+	.name	= "SSB PCIcore external I/O",
+	.start	= 0x100,
+	.end	= 0x7FF,
+	.flags	= IORESOURCE_IO | IORESOURCE_PCI_FIXED,
+};
+
+static struct pci_controller ssb_pcicore_controller = {
+	.pci_ops	= &ssb_pcicore_pciops,
+	.io_resource	= &ssb_pcicore_io_resource,
+	.mem_resource	= &ssb_pcicore_mem_resource,
+};
+
+/* This function is called when doing a pci_enable_device().
+ * We must first check if the device is a device on the PCI-core bridge.
+ */
+int ssb_pcicore_plat_dev_init(struct pci_dev *d)
+{
+	if (d->bus->ops != &ssb_pcicore_pciops) {
+		/* This is not a device on the PCI-core bridge. */
+		return -ENODEV;
+	}
+
+	dev_info(&d->dev, "PCI: Fixing up device %s\n", pci_name(d));
+
+	/* Fix up interrupt lines */
+	d->irq = ssb_mips_irq(extpci_core->dev) + 2;
+	pci_write_config_byte(d, PCI_INTERRUPT_LINE, d->irq);
+
+	return 0;
+}
+
+/* Early PCI fixup for a device on the PCI-core bridge. */
+static void ssb_pcicore_fixup_pcibridge(struct pci_dev *dev)
+{
+	u8 lat;
+
+	if (dev->bus->ops != &ssb_pcicore_pciops) {
+		/* This is not a device on the PCI-core bridge. */
+		return;
+	}
+	if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) != 0)
+		return;
+
+	dev_info(&dev->dev, "PCI: Fixing up bridge %s\n", pci_name(dev));
+
+	/* Enable PCI bridge bus mastering and memory space */
+	pci_set_master(dev);
+	if (pcibios_enable_device(dev, ~0) < 0) {
+		dev_err(&dev->dev, "PCI: SSB bridge enable failed\n");
+		return;
+	}
+
+	/* Enable PCI bridge BAR1 prefetch and burst */
+	pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
+
+	/* Make sure our latency is high enough to handle the devices behind us */
+	lat = 168;
+	dev_info(&dev->dev,
+		 "PCI: Fixing latency timer of device %s to %u\n",
+		 pci_name(dev), lat);
+	pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_pcicore_fixup_pcibridge);
+
+/* PCI device IRQ mapping. */
+int ssb_pcicore_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	if (dev->bus->ops != &ssb_pcicore_pciops) {
+		/* This is not a device on the PCI-core bridge. */
+		return -ENODEV;
+	}
+	return ssb_mips_irq(extpci_core->dev) + 2;
+}
+
+static void ssb_pcicore_init_hostmode(struct ssb_pcicore *pc)
+{
+	u32 val;
+
+	if (WARN_ON(extpci_core))
+		return;
+	extpci_core = pc;
+
+	dev_dbg(pc->dev->dev, "PCIcore in host mode found\n");
+	/* Reset devices on the external PCI bus */
+	val = SSB_PCICORE_CTL_RST_OE;
+	val |= SSB_PCICORE_CTL_CLK_OE;
+	pcicore_write32(pc, SSB_PCICORE_CTL, val);
+	val |= SSB_PCICORE_CTL_CLK; /* Clock on */
+	pcicore_write32(pc, SSB_PCICORE_CTL, val);
+	udelay(150); /* Assertion time demanded by the PCI standard */
+	val |= SSB_PCICORE_CTL_RST; /* Deassert RST# */
+	pcicore_write32(pc, SSB_PCICORE_CTL, val);
+	val = SSB_PCICORE_ARBCTL_INTERN;
+	pcicore_write32(pc, SSB_PCICORE_ARBCTL, val);
+	udelay(1); /* Assertion time demanded by the PCI standard */
+
+	if (pc->dev->bus->has_cardbus_slot) {
+		dev_dbg(pc->dev->dev, "CardBus slot detected\n");
+		pc->cardbusmode = 1;
+		/* GPIO 1 resets the bridge */
+		ssb_gpio_out(pc->dev->bus, 1, 1);
+		ssb_gpio_outen(pc->dev->bus, 1, 1);
+		pcicore_write16(pc, SSB_PCICORE_SPROM(0),
+				pcicore_read16(pc, SSB_PCICORE_SPROM(0))
+				| 0x0400);
+	}
+
+	/* 64MB I/O window */
+	pcicore_write32(pc, SSB_PCICORE_SBTOPCI0,
+			SSB_PCICORE_SBTOPCI_IO);
+	/* 64MB config space */
+	pcicore_write32(pc, SSB_PCICORE_SBTOPCI1,
+			SSB_PCICORE_SBTOPCI_CFG0);
+	/* 1GB memory window */
+	pcicore_write32(pc, SSB_PCICORE_SBTOPCI2,
+			SSB_PCICORE_SBTOPCI_MEM | SSB_PCI_DMA);
+
+	/*
+	 * Accessing PCI config without a proper delay after devices reset (not
+	 * GPIO reset) was causing reboots on WRT300N v1.0 (BCM4704).
+	 * Tested delay 850 us lowered reboot chance to 50-80%, 1000 us fixed it
+	 * completely. Flushing all writes was also tested but with no luck.
+	 * The same problem was reported for WRT350N v1 (BCM4705), so we just
+	 * sleep here unconditionally.
+	 */
+	usleep_range(1000, 2000);
+
+	/* Enable PCI bridge BAR0 prefetch and burst */
+	val = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	ssb_extpci_write_config(pc, 0, 0, 0, PCI_COMMAND, &val, 2);
+	/* Clear error conditions */
+	val = 0;
+	ssb_extpci_write_config(pc, 0, 0, 0, PCI_STATUS, &val, 2);
+
+	/* Enable PCI interrupts */
+	pcicore_write32(pc, SSB_PCICORE_IMASK,
+			SSB_PCICORE_IMASK_INTA);
+
+	/* Ok, ready to run, register it to the system.
+	 * The following needs change, if we want to port hostmode
+	 * to non-MIPS platform.
+	 */
+	ssb_pcicore_controller.io_map_base = (unsigned long)ioremap(SSB_PCI_MEM, 0x04000000);
+	set_io_port_base(ssb_pcicore_controller.io_map_base);
+	/* Give some time to the PCI controller to configure itself with the new
+	 * values. Not waiting at this point causes crashes of the machine.
+	 */
+	mdelay(10);
+	register_pci_controller(&ssb_pcicore_controller);
+}
+
+static int pcicore_is_in_hostmode(struct ssb_pcicore *pc)
+{
+	struct ssb_bus *bus = pc->dev->bus;
+	u16 chipid_top;
+	u32 tmp;
+
+	chipid_top = (bus->chip_id & 0xFF00);
+	if (chipid_top != 0x4700 &&
+	    chipid_top != 0x5300)
+		return 0;
+
+	if (bus->sprom.boardflags_lo & SSB_PCICORE_BFL_NOPCI)
+		return 0;
+
+	/* The 200-pin BCM4712 package does not bond out PCI. Even when
+	 * PCI is bonded out, some boards may leave the pins floating.
+	 */
+	if (bus->chip_id == 0x4712) {
+		if (bus->chip_package == SSB_CHIPPACK_BCM4712S)
+			return 0;
+		if (bus->chip_package == SSB_CHIPPACK_BCM4712M)
+			return 0;
+	}
+	if (bus->chip_id == 0x5350)
+		return 0;
+
+	return !mips_busprobe32(tmp, (bus->mmio + (pc->dev->core_index * SSB_CORE_SIZE)));
+}
+#endif /* CONFIG_SSB_PCICORE_HOSTMODE */
+
+/**************************************************
+ * Workarounds.
+ **************************************************/
+
+static void ssb_pcicore_fix_sprom_core_index(struct ssb_pcicore *pc)
+{
+	u16 tmp = pcicore_read16(pc, SSB_PCICORE_SPROM(0));
+	if (((tmp & 0xF000) >> 12) != pc->dev->core_index) {
+		tmp &= ~0xF000;
+		tmp |= (pc->dev->core_index << 12);
+		pcicore_write16(pc, SSB_PCICORE_SPROM(0), tmp);
+	}
+}
+
+static u8 ssb_pcicore_polarity_workaround(struct ssb_pcicore *pc)
+{
+	return (ssb_pcie_read(pc, 0x204) & 0x10) ? 0xC0 : 0x80;
+}
+
+static void ssb_pcicore_serdes_workaround(struct ssb_pcicore *pc)
+{
+	const u8 serdes_pll_device = 0x1D;
+	const u8 serdes_rx_device = 0x1F;
+	u16 tmp;
+
+	ssb_pcie_mdio_write(pc, serdes_rx_device, 1 /* Control */,
+			    ssb_pcicore_polarity_workaround(pc));
+	tmp = ssb_pcie_mdio_read(pc, serdes_pll_device, 1 /* Control */);
+	if (tmp & 0x4000)
+		ssb_pcie_mdio_write(pc, serdes_pll_device, 1, tmp & ~0x4000);
+}
+
+static void ssb_pcicore_pci_setup_workarounds(struct ssb_pcicore *pc)
+{
+	struct ssb_device *pdev = pc->dev;
+	struct ssb_bus *bus = pdev->bus;
+	u32 tmp;
+
+	tmp = pcicore_read32(pc, SSB_PCICORE_SBTOPCI2);
+	tmp |= SSB_PCICORE_SBTOPCI_PREF;
+	tmp |= SSB_PCICORE_SBTOPCI_BURST;
+	pcicore_write32(pc, SSB_PCICORE_SBTOPCI2, tmp);
+
+	if (pdev->id.revision < 5) {
+		tmp = ssb_read32(pdev, SSB_IMCFGLO);
+		tmp &= ~SSB_IMCFGLO_SERTO;
+		tmp |= 2;
+		tmp &= ~SSB_IMCFGLO_REQTO;
+		tmp |= 3 << SSB_IMCFGLO_REQTO_SHIFT;
+		ssb_write32(pdev, SSB_IMCFGLO, tmp);
+		ssb_commit_settings(bus);
+	} else if (pdev->id.revision >= 11) {
+		tmp = pcicore_read32(pc, SSB_PCICORE_SBTOPCI2);
+		tmp |= SSB_PCICORE_SBTOPCI_MRM;
+		pcicore_write32(pc, SSB_PCICORE_SBTOPCI2, tmp);
+	}
+}
+
+static void ssb_pcicore_pcie_setup_workarounds(struct ssb_pcicore *pc)
+{
+	u32 tmp;
+	u8 rev = pc->dev->id.revision;
+
+	if (rev == 0 || rev == 1) {
+		/* TLP Workaround register. */
+		tmp = ssb_pcie_read(pc, 0x4);
+		tmp |= 0x8;
+		ssb_pcie_write(pc, 0x4, tmp);
+	}
+	if (rev == 1) {
+		/* DLLP Link Control register. */
+		tmp = ssb_pcie_read(pc, 0x100);
+		tmp |= 0x40;
+		ssb_pcie_write(pc, 0x100, tmp);
+	}
+
+	if (rev == 0) {
+		const u8 serdes_rx_device = 0x1F;
+
+		ssb_pcie_mdio_write(pc, serdes_rx_device,
+					2 /* Timer */, 0x8128);
+		ssb_pcie_mdio_write(pc, serdes_rx_device,
+					6 /* CDR */, 0x0100);
+		ssb_pcie_mdio_write(pc, serdes_rx_device,
+					7 /* CDR BW */, 0x1466);
+	} else if (rev == 3 || rev == 4 || rev == 5) {
+		/* TODO: DLLP Power Management Threshold */
+		ssb_pcicore_serdes_workaround(pc);
+		/* TODO: ASPM */
+	} else if (rev == 7) {
+		/* TODO: No PLL down */
+	}
+
+	if (rev >= 6) {
+		/* Miscellaneous Configuration Fixup */
+		tmp = pcicore_read16(pc, SSB_PCICORE_SPROM(5));
+		if (!(tmp & 0x8000))
+			pcicore_write16(pc, SSB_PCICORE_SPROM(5),
+					tmp | 0x8000);
+	}
+}
+
+/**************************************************
+ * Generic and Clientmode operation code.
+ **************************************************/
+
+static void ssb_pcicore_init_clientmode(struct ssb_pcicore *pc)
+{
+	struct ssb_device *pdev = pc->dev;
+	struct ssb_bus *bus = pdev->bus;
+
+	if (bus->bustype == SSB_BUSTYPE_PCI)
+		ssb_pcicore_fix_sprom_core_index(pc);
+
+	/* Disable PCI interrupts. */
+	ssb_write32(pdev, SSB_INTVEC, 0);
+
+	/* Additional PCIe always once-executed workarounds */
+	if (pc->dev->id.coreid == SSB_DEV_PCIE) {
+		ssb_pcicore_serdes_workaround(pc);
+		/* TODO: ASPM */
+		/* TODO: Clock Request Update */
+	}
+}
+
+void ssb_pcicore_init(struct ssb_pcicore *pc)
+{
+	struct ssb_device *dev = pc->dev;
+
+	if (!dev)
+		return;
+	if (!ssb_device_is_enabled(dev))
+		ssb_device_enable(dev, 0);
+
+#ifdef CONFIG_SSB_PCICORE_HOSTMODE
+	pc->hostmode = pcicore_is_in_hostmode(pc);
+	if (pc->hostmode)
+		ssb_pcicore_init_hostmode(pc);
+#endif /* CONFIG_SSB_PCICORE_HOSTMODE */
+	if (!pc->hostmode)
+		ssb_pcicore_init_clientmode(pc);
+}
+
+static u32 ssb_pcie_read(struct ssb_pcicore *pc, u32 address)
+{
+	pcicore_write32(pc, 0x130, address);
+	return pcicore_read32(pc, 0x134);
+}
+
+static void ssb_pcie_write(struct ssb_pcicore *pc, u32 address, u32 data)
+{
+	pcicore_write32(pc, 0x130, address);
+	pcicore_write32(pc, 0x134, data);
+}
+
+static void ssb_pcie_mdio_set_phy(struct ssb_pcicore *pc, u8 phy)
+{
+	const u16 mdio_control = 0x128;
+	const u16 mdio_data = 0x12C;
+	u32 v;
+	int i;
+
+	v = (1 << 30); /* Start of Transaction */
+	v |= (1 << 28); /* Write Transaction */
+	v |= (1 << 17); /* Turnaround */
+	v |= (0x1F << 18);
+	v |= (phy << 4);
+	pcicore_write32(pc, mdio_data, v);
+
+	udelay(10);
+	for (i = 0; i < 200; i++) {
+		v = pcicore_read32(pc, mdio_control);
+		if (v & 0x100 /* Trans complete */)
+			break;
+		msleep(1);
+	}
+}
+
+static u16 ssb_pcie_mdio_read(struct ssb_pcicore *pc, u8 device, u8 address)
+{
+	const u16 mdio_control = 0x128;
+	const u16 mdio_data = 0x12C;
+	int max_retries = 10;
+	u16 ret = 0;
+	u32 v;
+	int i;
+
+	v = 0x80; /* Enable Preamble Sequence */
+	v |= 0x2; /* MDIO Clock Divisor */
+	pcicore_write32(pc, mdio_control, v);
+
+	if (pc->dev->id.revision >= 10) {
+		max_retries = 200;
+		ssb_pcie_mdio_set_phy(pc, device);
+	}
+
+	v = (1 << 30); /* Start of Transaction */
+	v |= (1 << 29); /* Read Transaction */
+	v |= (1 << 17); /* Turnaround */
+	if (pc->dev->id.revision < 10)
+		v |= (u32)device << 22;
+	v |= (u32)address << 18;
+	pcicore_write32(pc, mdio_data, v);
+	/* Wait for the device to complete the transaction */
+	udelay(10);
+	for (i = 0; i < max_retries; i++) {
+		v = pcicore_read32(pc, mdio_control);
+		if (v & 0x100 /* Trans complete */) {
+			udelay(10);
+			ret = pcicore_read32(pc, mdio_data);
+			break;
+		}
+		msleep(1);
+	}
+	pcicore_write32(pc, mdio_control, 0);
+	return ret;
+}
+
+static void ssb_pcie_mdio_write(struct ssb_pcicore *pc, u8 device,
+				u8 address, u16 data)
+{
+	const u16 mdio_control = 0x128;
+	const u16 mdio_data = 0x12C;
+	int max_retries = 10;
+	u32 v;
+	int i;
+
+	v = 0x80; /* Enable Preamble Sequence */
+	v |= 0x2; /* MDIO Clock Divisor */
+	pcicore_write32(pc, mdio_control, v);
+
+	if (pc->dev->id.revision >= 10) {
+		max_retries = 200;
+		ssb_pcie_mdio_set_phy(pc, device);
+	}
+
+	v = (1 << 30); /* Start of Transaction */
+	v |= (1 << 28); /* Write Transaction */
+	v |= (1 << 17); /* Turnaround */
+	if (pc->dev->id.revision < 10)
+		v |= (u32)device << 22;
+	v |= (u32)address << 18;
+	v |= data;
+	pcicore_write32(pc, mdio_data, v);
+	/* Wait for the device to complete the transaction */
+	udelay(10);
+	for (i = 0; i < max_retries; i++) {
+		v = pcicore_read32(pc, mdio_control);
+		if (v & 0x100 /* Trans complete */)
+			break;
+		msleep(1);
+	}
+	pcicore_write32(pc, mdio_control, 0);
+}
+
+int ssb_pcicore_dev_irqvecs_enable(struct ssb_pcicore *pc,
+				   struct ssb_device *dev)
+{
+	struct ssb_device *pdev = pc->dev;
+	struct ssb_bus *bus;
+	int err = 0;
+	u32 tmp;
+
+	if (dev->bus->bustype != SSB_BUSTYPE_PCI) {
+		/* This SSB device is not on a PCI host-bus. So the IRQs are
+		 * not routed through the PCI core.
+		 * So we must not enable routing through the PCI core.
+		 */
+		goto out;
+	}
+
+	if (!pdev)
+		goto out;
+	bus = pdev->bus;
+
+	might_sleep_if(pdev->id.coreid != SSB_DEV_PCI);
+
+	/* Enable interrupts for this device. */
+	if ((pdev->id.revision >= 6) || (pdev->id.coreid == SSB_DEV_PCIE)) {
+		u32 coremask;
+
+		/* Calculate the "coremask" for the device. */
+		coremask = (1 << dev->core_index);
+
+		WARN_ON(bus->bustype != SSB_BUSTYPE_PCI);
+		err = pci_read_config_dword(bus->host_pci, SSB_PCI_IRQMASK, &tmp);
+		if (err)
+			goto out;
+		tmp |= coremask << 8;
+		err = pci_write_config_dword(bus->host_pci, SSB_PCI_IRQMASK, tmp);
+		if (err)
+			goto out;
+	} else {
+		u32 intvec;
+
+		intvec = ssb_read32(pdev, SSB_INTVEC);
+		tmp = ssb_read32(dev, SSB_TPSFLAG);
+		tmp &= SSB_TPSFLAG_BPFLAG;
+		intvec |= (1 << tmp);
+		ssb_write32(pdev, SSB_INTVEC, intvec);
+	}
+
+	/* Setup PCIcore operation. */
+	if (pc->setup_done)
+		goto out;
+	if (pdev->id.coreid == SSB_DEV_PCI) {
+		ssb_pcicore_pci_setup_workarounds(pc);
+	} else {
+		WARN_ON(pdev->id.coreid != SSB_DEV_PCIE);
+		ssb_pcicore_pcie_setup_workarounds(pc);
+	}
+	pc->setup_done = 1;
+out:
+	return err;
+}
+EXPORT_SYMBOL(ssb_pcicore_dev_irqvecs_enable);

linux-7.2.3/drivers/ssb/embedded.c

@@ -0,0 +1,258 @@
+/*
+ * Sonics Silicon Backplane
+ * Embedded systems support code
+ *
+ * Copyright 2005-2008, Broadcom Corporation
+ * Copyright 2006-2008, Michael Buesch <m@bues.ch>
+ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/export.h>
+#include <linux/platform_device.h>
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_embedded.h>
+#include <linux/ssb/ssb_driver_pci.h>
+#include <linux/ssb/ssb_driver_gige.h>
+#include <linux/pci.h>
+
+
+int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks)
+{
+	if (ssb_chipco_available(&bus->chipco)) {
+		ssb_chipco_watchdog_timer_set(&bus->chipco, ticks);
+		return 0;
+	}
+	if (ssb_extif_available(&bus->extif)) {
+		ssb_extif_watchdog_timer_set(&bus->extif, ticks);
+		return 0;
+	}
+	return -ENODEV;
+}
+EXPORT_SYMBOL(ssb_watchdog_timer_set);
+
+int ssb_watchdog_register(struct ssb_bus *bus)
+{
+	struct bcm47xx_wdt wdt = {};
+	struct platform_device *pdev;
+
+	if (ssb_chipco_available(&bus->chipco)) {
+		wdt.driver_data = &bus->chipco;
+		wdt.timer_set = ssb_chipco_watchdog_timer_set_wdt;
+		wdt.timer_set_ms = ssb_chipco_watchdog_timer_set_ms;
+		wdt.max_timer_ms = bus->chipco.max_timer_ms;
+	} else if (ssb_extif_available(&bus->extif)) {
+		wdt.driver_data = &bus->extif;
+		wdt.timer_set = ssb_extif_watchdog_timer_set_wdt;
+		wdt.timer_set_ms = ssb_extif_watchdog_timer_set_ms;
+		wdt.max_timer_ms = SSB_EXTIF_WATCHDOG_MAX_TIMER_MS;
+	} else {
+		return -ENODEV;
+	}
+
+	pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
+					     bus->busnumber, &wdt,
+					     sizeof(wdt));
+	if (IS_ERR(pdev)) {
+		pr_debug("can not register watchdog device, err: %li\n",
+			 PTR_ERR(pdev));
+		return PTR_ERR(pdev);
+	}
+
+	bus->watchdog = pdev;
+	return 0;
+}
+
+u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_in(&bus->chipco, mask);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_in(&bus->extif, mask);
+	else
+		WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_in);
+
+u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_out(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_out(&bus->extif, mask, value);
+	else
+		WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_out);
+
+u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_outen(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_outen(&bus->extif, mask, value);
+	else
+		WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_outen);
+
+u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_control(&bus->chipco, mask, value);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_control);
+
+u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_intmask(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_intmask(&bus->extif, mask, value);
+	else
+		WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_intmask);
+
+u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_polarity(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_polarity(&bus->extif, mask, value);
+	else
+		WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_polarity);
+
+#ifdef CONFIG_SSB_DRIVER_GIGE
+static int gige_pci_init_callback(struct ssb_bus *bus, unsigned long data)
+{
+	struct pci_dev *pdev = (struct pci_dev *)data;
+	struct ssb_device *dev;
+	unsigned int i;
+	int res;
+
+	for (i = 0; i < bus->nr_devices; i++) {
+		dev = &(bus->devices[i]);
+		if (dev->id.coreid != SSB_DEV_ETHERNET_GBIT)
+			continue;
+		if (!dev->dev ||
+		    !dev->dev->driver ||
+		    !device_is_registered(dev->dev))
+			continue;
+		res = ssb_gige_pcibios_plat_dev_init(dev, pdev);
+		if (res >= 0)
+			return res;
+	}
+
+	return -ENODEV;
+}
+#endif /* CONFIG_SSB_DRIVER_GIGE */
+
+int ssb_pcibios_plat_dev_init(struct pci_dev *dev)
+{
+	int err;
+
+	err = ssb_pcicore_plat_dev_init(dev);
+	if (!err)
+		return 0;
+#ifdef CONFIG_SSB_DRIVER_GIGE
+	err = ssb_for_each_bus_call((unsigned long)dev, gige_pci_init_callback);
+	if (err >= 0)
+		return err;
+#endif
+	/* This is not a PCI device on any SSB device. */
+
+	return -ENODEV;
+}
+
+#ifdef CONFIG_SSB_DRIVER_GIGE
+static int gige_map_irq_callback(struct ssb_bus *bus, unsigned long data)
+{
+	const struct pci_dev *pdev = (const struct pci_dev *)data;
+	struct ssb_device *dev;
+	unsigned int i;
+	int res;
+
+	for (i = 0; i < bus->nr_devices; i++) {
+		dev = &(bus->devices[i]);
+		if (dev->id.coreid != SSB_DEV_ETHERNET_GBIT)
+			continue;
+		if (!dev->dev ||
+		    !dev->dev->driver ||
+		    !device_is_registered(dev->dev))
+			continue;
+		res = ssb_gige_map_irq(dev, pdev);
+		if (res >= 0)
+			return res;
+	}
+
+	return -ENODEV;
+}
+#endif /* CONFIG_SSB_DRIVER_GIGE */
+
+int ssb_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	int res;
+
+	/* Check if this PCI device is a device on a SSB bus or device
+	 * and return the IRQ number for it. */
+
+	res = ssb_pcicore_pcibios_map_irq(dev, slot, pin);
+	if (res >= 0)
+		return res;
+#ifdef CONFIG_SSB_DRIVER_GIGE
+	res = ssb_for_each_bus_call((unsigned long)dev, gige_map_irq_callback);
+	if (res >= 0)
+		return res;
+#endif
+	/* This is not a PCI device on any SSB device. */
+
+	return -ENODEV;
+}

linux-7.2.3/drivers/ssb/host_soc.c

@@ -0,0 +1,210 @@
+/*
+ * Sonics Silicon Backplane SoC host related functions.
+ * Subsystem core
+ *
+ * Copyright 2005, Broadcom Corporation
+ * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/bcm47xx_nvram.h>
+#include <linux/ssb/ssb.h>
+
+static u8 ssb_host_soc_read8(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	return readb(bus->mmio + offset);
+}
+
+static u16 ssb_host_soc_read16(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	return readw(bus->mmio + offset);
+}
+
+static u32 ssb_host_soc_read32(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	return readl(bus->mmio + offset);
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_host_soc_block_read(struct ssb_device *dev, void *buffer,
+				    size_t count, u16 offset, u8 reg_width)
+{
+	struct ssb_bus *bus = dev->bus;
+	void __iomem *addr;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	addr = bus->mmio + offset;
+
+	switch (reg_width) {
+	case sizeof(u8): {
+		u8 *buf = buffer;
+
+		while (count) {
+			*buf = __raw_readb(addr);
+			buf++;
+			count--;
+		}
+		break;
+	}
+	case sizeof(u16): {
+		__le16 *buf = buffer;
+
+		WARN_ON(count & 1);
+		while (count) {
+			*buf = (__force __le16)__raw_readw(addr);
+			buf++;
+			count -= 2;
+		}
+		break;
+	}
+	case sizeof(u32): {
+		__le32 *buf = buffer;
+
+		WARN_ON(count & 3);
+		while (count) {
+			*buf = (__force __le32)__raw_readl(addr);
+			buf++;
+			count -= 4;
+		}
+		break;
+	}
+	default:
+		WARN_ON(1);
+	}
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
+static void ssb_host_soc_write8(struct ssb_device *dev, u16 offset, u8 value)
+{
+	struct ssb_bus *bus = dev->bus;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	writeb(value, bus->mmio + offset);
+}
+
+static void ssb_host_soc_write16(struct ssb_device *dev, u16 offset, u16 value)
+{
+	struct ssb_bus *bus = dev->bus;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	writew(value, bus->mmio + offset);
+}
+
+static void ssb_host_soc_write32(struct ssb_device *dev, u16 offset, u32 value)
+{
+	struct ssb_bus *bus = dev->bus;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	writel(value, bus->mmio + offset);
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_host_soc_block_write(struct ssb_device *dev, const void *buffer,
+				     size_t count, u16 offset, u8 reg_width)
+{
+	struct ssb_bus *bus = dev->bus;
+	void __iomem *addr;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	addr = bus->mmio + offset;
+
+	switch (reg_width) {
+	case sizeof(u8): {
+		const u8 *buf = buffer;
+
+		while (count) {
+			__raw_writeb(*buf, addr);
+			buf++;
+			count--;
+		}
+		break;
+	}
+	case sizeof(u16): {
+		const __le16 *buf = buffer;
+
+		WARN_ON(count & 1);
+		while (count) {
+			__raw_writew((__force u16)(*buf), addr);
+			buf++;
+			count -= 2;
+		}
+		break;
+	}
+	case sizeof(u32): {
+		const __le32 *buf = buffer;
+
+		WARN_ON(count & 3);
+		while (count) {
+			__raw_writel((__force u32)(*buf), addr);
+			buf++;
+			count -= 4;
+		}
+		break;
+	}
+	default:
+		WARN_ON(1);
+	}
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
+/* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */
+const struct ssb_bus_ops ssb_host_soc_ops = {
+	.read8		= ssb_host_soc_read8,
+	.read16		= ssb_host_soc_read16,
+	.read32		= ssb_host_soc_read32,
+	.write8		= ssb_host_soc_write8,
+	.write16	= ssb_host_soc_write16,
+	.write32	= ssb_host_soc_write32,
+#ifdef CONFIG_SSB_BLOCKIO
+	.block_read	= ssb_host_soc_block_read,
+	.block_write	= ssb_host_soc_block_write,
+#endif
+};
+
+int ssb_host_soc_get_invariants(struct ssb_bus *bus,
+				struct ssb_init_invariants *iv)
+{
+	char buf[20];
+	int len, err;
+
+	/* Fill boardinfo structure */
+	memset(&iv->boardinfo, 0, sizeof(struct ssb_boardinfo));
+
+	len = bcm47xx_nvram_getenv("boardvendor", buf, sizeof(buf));
+	if (len > 0) {
+		err = kstrtou16(strim(buf), 0, &iv->boardinfo.vendor);
+		if (err)
+			pr_warn("Couldn't parse nvram board vendor entry with value \"%s\"\n",
+				buf);
+	}
+	if (!iv->boardinfo.vendor)
+		iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
+
+	len = bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf));
+	if (len > 0) {
+		err = kstrtou16(strim(buf), 0, &iv->boardinfo.type);
+		if (err)
+			pr_warn("Couldn't parse nvram board type entry with value \"%s\"\n",
+				buf);
+	}
+
+	memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
+	ssb_fill_sprom_with_fallback(bus, &iv->sprom);
+
+	if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
+		iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
+
+	return 0;
+}

linux-7.2.3/drivers/ssb/pcihost_wrapper.c

@@ -0,0 +1,130 @@
+/*
+ * Sonics Silicon Backplane
+ * PCI Hostdevice wrapper
+ *
+ * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
+ * Copyright (c) 2005 Stefano Brivio <st3@riseup.net>
+ * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
+ * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ * Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/pm.h>
+#include <linux/pci.h>
+#include <linux/export.h>
+#include <linux/slab.h>
+#include <linux/ssb/ssb.h>
+
+
+#ifdef CONFIG_PM_SLEEP
+static int ssb_pcihost_suspend(struct device *d)
+{
+	struct pci_dev *dev = to_pci_dev(d);
+	struct ssb_bus *ssb = pci_get_drvdata(dev);
+	int err;
+
+	err = ssb_bus_suspend(ssb);
+	if (err)
+		return err;
+	pci_save_state(dev);
+	pci_disable_device(dev);
+
+	/* if there is a wakeup enabled child device on ssb bus,
+	   enable pci wakeup posibility. */
+	device_set_wakeup_enable(d, d->power.wakeup_path);
+
+	pci_prepare_to_sleep(dev);
+
+	return 0;
+}
+
+static int ssb_pcihost_resume(struct device *d)
+{
+	struct pci_dev *dev = to_pci_dev(d);
+	struct ssb_bus *ssb = pci_get_drvdata(dev);
+	int err;
+
+	pci_back_from_sleep(dev);
+	err = pci_enable_device(dev);
+	if (err)
+		return err;
+	pci_restore_state(dev);
+	err = ssb_bus_resume(ssb);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static const struct dev_pm_ops ssb_pcihost_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(ssb_pcihost_suspend, ssb_pcihost_resume)
+};
+
+#endif /* CONFIG_PM_SLEEP */
+
+static int ssb_pcihost_probe(struct pci_dev *dev,
+			     const struct pci_device_id *id)
+{
+	struct ssb_bus *ssb;
+	int err = -ENOMEM;
+	u32 val;
+
+	ssb = kzalloc_obj(*ssb);
+	if (!ssb)
+		goto out;
+	err = pci_enable_device(dev);
+	if (err)
+		goto err_kfree_ssb;
+	err = pci_request_regions(dev, dev_driver_string(&dev->dev));
+	if (err)
+		goto err_pci_disable;
+	pci_set_master(dev);
+
+	/* Disable the RETRY_TIMEOUT register (0x41) to keep
+	 * PCI Tx retries from interfering with C3 CPU state */
+	pci_read_config_dword(dev, 0x40, &val);
+	if ((val & 0x0000ff00) != 0)
+		pci_write_config_dword(dev, 0x40, val & 0xffff00ff);
+
+	err = ssb_bus_pcibus_register(ssb, dev);
+	if (err)
+		goto err_pci_release_regions;
+
+	pci_set_drvdata(dev, ssb);
+
+out:
+	return err;
+
+err_pci_release_regions:
+	pci_release_regions(dev);
+err_pci_disable:
+	pci_disable_device(dev);
+err_kfree_ssb:
+	kfree(ssb);
+	return err;
+}
+
+static void ssb_pcihost_remove(struct pci_dev *dev)
+{
+	struct ssb_bus *ssb = pci_get_drvdata(dev);
+
+	ssb_bus_unregister(ssb);
+	pci_release_regions(dev);
+	pci_disable_device(dev);
+	kfree(ssb);
+	pci_set_drvdata(dev, NULL);
+}
+
+int ssb_pcihost_register(struct pci_driver *driver)
+{
+	driver->probe = ssb_pcihost_probe;
+	driver->remove = ssb_pcihost_remove;
+#ifdef CONFIG_PM_SLEEP
+	driver->driver.pm = &ssb_pcihost_pm_ops;
+#endif
+
+	return pci_register_driver(driver);
+}
+EXPORT_SYMBOL(ssb_pcihost_register);

linux-7.2.3/drivers/ssb/pcmcia.c

@@ -0,0 +1,831 @@
+/*
+ * Sonics Silicon Backplane
+ * PCMCIA-Hostbus related functions
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2007-2008 Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/etherdevice.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+
+/* Define the following to 1 to enable a printk on each coreswitch. */
+#define SSB_VERBOSE_PCMCIACORESWITCH_DEBUG		0
+
+
+/* PCMCIA configuration registers */
+#define SSB_PCMCIA_ADDRESS0		0x2E
+#define SSB_PCMCIA_ADDRESS1		0x30
+#define SSB_PCMCIA_ADDRESS2		0x32
+#define SSB_PCMCIA_MEMSEG		0x34
+#define SSB_PCMCIA_SPROMCTL		0x36
+#define  SSB_PCMCIA_SPROMCTL_IDLE	0
+#define  SSB_PCMCIA_SPROMCTL_WRITE	1
+#define  SSB_PCMCIA_SPROMCTL_READ	2
+#define  SSB_PCMCIA_SPROMCTL_WRITEEN	4
+#define  SSB_PCMCIA_SPROMCTL_WRITEDIS	7
+#define  SSB_PCMCIA_SPROMCTL_DONE	8
+#define SSB_PCMCIA_SPROM_DATALO		0x38
+#define SSB_PCMCIA_SPROM_DATAHI		0x3A
+#define SSB_PCMCIA_SPROM_ADDRLO		0x3C
+#define SSB_PCMCIA_SPROM_ADDRHI		0x3E
+
+/* Hardware invariants CIS tuples */
+#define SSB_PCMCIA_CIS			0x80
+#define  SSB_PCMCIA_CIS_ID		0x01
+#define  SSB_PCMCIA_CIS_BOARDREV	0x02
+#define  SSB_PCMCIA_CIS_PA		0x03
+#define   SSB_PCMCIA_CIS_PA_PA0B0_LO	0
+#define   SSB_PCMCIA_CIS_PA_PA0B0_HI	1
+#define   SSB_PCMCIA_CIS_PA_PA0B1_LO	2
+#define   SSB_PCMCIA_CIS_PA_PA0B1_HI	3
+#define   SSB_PCMCIA_CIS_PA_PA0B2_LO	4
+#define   SSB_PCMCIA_CIS_PA_PA0B2_HI	5
+#define   SSB_PCMCIA_CIS_PA_ITSSI	6
+#define   SSB_PCMCIA_CIS_PA_MAXPOW	7
+#define  SSB_PCMCIA_CIS_OEMNAME		0x04
+#define  SSB_PCMCIA_CIS_CCODE		0x05
+#define  SSB_PCMCIA_CIS_ANTENNA		0x06
+#define  SSB_PCMCIA_CIS_ANTGAIN		0x07
+#define  SSB_PCMCIA_CIS_BFLAGS		0x08
+#define  SSB_PCMCIA_CIS_LEDS		0x09
+
+/* PCMCIA SPROM size. */
+#define SSB_PCMCIA_SPROM_SIZE		256
+#define SSB_PCMCIA_SPROM_SIZE_BYTES	(SSB_PCMCIA_SPROM_SIZE * sizeof(u16))
+
+
+/* Write to a PCMCIA configuration register. */
+static int ssb_pcmcia_cfg_write(struct ssb_bus *bus, u8 offset, u8 value)
+{
+	int res;
+
+	res = pcmcia_write_config_byte(bus->host_pcmcia, offset, value);
+	if (unlikely(res != 0))
+		return -EBUSY;
+
+	return 0;
+}
+
+/* Read from a PCMCIA configuration register. */
+static int ssb_pcmcia_cfg_read(struct ssb_bus *bus, u8 offset, u8 *value)
+{
+	int res;
+
+	res = pcmcia_read_config_byte(bus->host_pcmcia, offset, value);
+	if (unlikely(res != 0))
+		return -EBUSY;
+
+	return 0;
+}
+
+int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus,
+			      u8 coreidx)
+{
+	int err;
+	int attempts = 0;
+	u32 cur_core;
+	u32 addr;
+	u32 read_addr;
+	u8 val;
+
+	addr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;
+	while (1) {
+		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS0,
+					   (addr & 0x0000F000) >> 12);
+		if (err)
+			goto error;
+		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS1,
+					   (addr & 0x00FF0000) >> 16);
+		if (err)
+			goto error;
+		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS2,
+					   (addr & 0xFF000000) >> 24);
+		if (err)
+			goto error;
+
+		read_addr = 0;
+
+		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS0, &val);
+		if (err)
+			goto error;
+		read_addr |= ((u32)(val & 0x0F)) << 12;
+		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS1, &val);
+		if (err)
+			goto error;
+		read_addr |= ((u32)val) << 16;
+		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS2, &val);
+		if (err)
+			goto error;
+		read_addr |= ((u32)val) << 24;
+
+		cur_core = (read_addr - SSB_ENUM_BASE) / SSB_CORE_SIZE;
+		if (cur_core == coreidx)
+			break;
+
+		err = -ETIMEDOUT;
+		if (attempts++ > SSB_BAR0_MAX_RETRIES)
+			goto error;
+		udelay(10);
+	}
+
+	return 0;
+error:
+	pr_err("Failed to switch to core %u\n", coreidx);
+	return err;
+}
+
+static int ssb_pcmcia_switch_core(struct ssb_bus *bus, struct ssb_device *dev)
+{
+	int err;
+
+#if SSB_VERBOSE_PCMCIACORESWITCH_DEBUG
+	pr_info("Switching to %s core, index %d\n",
+		ssb_core_name(dev->id.coreid), dev->core_index);
+#endif
+
+	err = ssb_pcmcia_switch_coreidx(bus, dev->core_index);
+	if (!err)
+		bus->mapped_device = dev;
+
+	return err;
+}
+
+int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg)
+{
+	int attempts = 0;
+	int err;
+	u8 val;
+
+	WARN_ON((seg != 0) && (seg != 1));
+	while (1) {
+		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_MEMSEG, seg);
+		if (err)
+			goto error;
+		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_MEMSEG, &val);
+		if (err)
+			goto error;
+		if (val == seg)
+			break;
+
+		err = -ETIMEDOUT;
+		if (unlikely(attempts++ > SSB_BAR0_MAX_RETRIES))
+			goto error;
+		udelay(10);
+	}
+	bus->mapped_pcmcia_seg = seg;
+
+	return 0;
+error:
+	pr_err("Failed to switch pcmcia segment\n");
+	return err;
+}
+
+static int select_core_and_segment(struct ssb_device *dev,
+				   u16 *offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	int err;
+	u8 need_segment;
+
+	if (*offset >= 0x800) {
+		*offset -= 0x800;
+		need_segment = 1;
+	} else
+		need_segment = 0;
+
+	if (unlikely(dev != bus->mapped_device)) {
+		err = ssb_pcmcia_switch_core(bus, dev);
+		if (unlikely(err))
+			return err;
+	}
+	if (unlikely(need_segment != bus->mapped_pcmcia_seg)) {
+		err = ssb_pcmcia_switch_segment(bus, need_segment);
+		if (unlikely(err))
+			return err;
+	}
+
+	return 0;
+}
+
+static u8 ssb_pcmcia_read8(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	int err;
+	u8 value = 0xFF;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (likely(!err))
+		value = readb(bus->mmio + offset);
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+
+	return value;
+}
+
+static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	int err;
+	u16 value = 0xFFFF;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (likely(!err))
+		value = readw(bus->mmio + offset);
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+
+	return value;
+}
+
+static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	int err;
+	u32 lo = 0xFFFFFFFF, hi = 0xFFFFFFFF;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (likely(!err)) {
+		lo = readw(bus->mmio + offset);
+		hi = readw(bus->mmio + offset + 2);
+	}
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+
+	return (lo | (hi << 16));
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_pcmcia_block_read(struct ssb_device *dev, void *buffer,
+				  size_t count, u16 offset, u8 reg_width)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	void __iomem *addr = bus->mmio + offset;
+	int err;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (unlikely(err)) {
+		memset(buffer, 0xFF, count);
+		goto unlock;
+	}
+	switch (reg_width) {
+	case sizeof(u8): {
+		u8 *buf = buffer;
+
+		while (count) {
+			*buf = __raw_readb(addr);
+			buf++;
+			count--;
+		}
+		break;
+	}
+	case sizeof(u16): {
+		__le16 *buf = buffer;
+
+		WARN_ON(count & 1);
+		while (count) {
+			*buf = (__force __le16)__raw_readw(addr);
+			buf++;
+			count -= 2;
+		}
+		break;
+	}
+	case sizeof(u32): {
+		__le16 *buf = buffer;
+
+		WARN_ON(count & 3);
+		while (count) {
+			*buf = (__force __le16)__raw_readw(addr);
+			buf++;
+			*buf = (__force __le16)__raw_readw(addr + 2);
+			buf++;
+			count -= 4;
+		}
+		break;
+	}
+	default:
+		WARN_ON(1);
+	}
+unlock:
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
+static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (likely(!err))
+		writeb(value, bus->mmio + offset);
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+}
+
+static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (likely(!err))
+		writew(value, bus->mmio + offset);
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+}
+
+static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (likely(!err)) {
+		writew((value & 0x0000FFFF), bus->mmio + offset);
+		writew(((value & 0xFFFF0000) >> 16), bus->mmio + offset + 2);
+	}
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_pcmcia_block_write(struct ssb_device *dev, const void *buffer,
+				   size_t count, u16 offset, u8 reg_width)
+{
+	struct ssb_bus *bus = dev->bus;
+	unsigned long flags;
+	void __iomem *addr = bus->mmio + offset;
+	int err;
+
+	spin_lock_irqsave(&bus->bar_lock, flags);
+	err = select_core_and_segment(dev, &offset);
+	if (unlikely(err))
+		goto unlock;
+	switch (reg_width) {
+	case sizeof(u8): {
+		const u8 *buf = buffer;
+
+		while (count) {
+			__raw_writeb(*buf, addr);
+			buf++;
+			count--;
+		}
+		break;
+	}
+	case sizeof(u16): {
+		const __le16 *buf = buffer;
+
+		WARN_ON(count & 1);
+		while (count) {
+			__raw_writew((__force u16)(*buf), addr);
+			buf++;
+			count -= 2;
+		}
+		break;
+	}
+	case sizeof(u32): {
+		const __le16 *buf = buffer;
+
+		WARN_ON(count & 3);
+		while (count) {
+			__raw_writew((__force u16)(*buf), addr);
+			buf++;
+			__raw_writew((__force u16)(*buf), addr + 2);
+			buf++;
+			count -= 4;
+		}
+		break;
+	}
+	default:
+		WARN_ON(1);
+	}
+unlock:
+	spin_unlock_irqrestore(&bus->bar_lock, flags);
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
+/* Not "static", as it's used in main.c */
+const struct ssb_bus_ops ssb_pcmcia_ops = {
+	.read8		= ssb_pcmcia_read8,
+	.read16		= ssb_pcmcia_read16,
+	.read32		= ssb_pcmcia_read32,
+	.write8		= ssb_pcmcia_write8,
+	.write16	= ssb_pcmcia_write16,
+	.write32	= ssb_pcmcia_write32,
+#ifdef CONFIG_SSB_BLOCKIO
+	.block_read	= ssb_pcmcia_block_read,
+	.block_write	= ssb_pcmcia_block_write,
+#endif
+};
+
+static int ssb_pcmcia_sprom_command(struct ssb_bus *bus, u8 command)
+{
+	unsigned int i;
+	int err;
+	u8 value;
+
+	err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROMCTL, command);
+	if (err)
+		return err;
+	for (i = 0; i < 1000; i++) {
+		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROMCTL, &value);
+		if (err)
+			return err;
+		if (value & SSB_PCMCIA_SPROMCTL_DONE)
+			return 0;
+		udelay(10);
+	}
+
+	return -ETIMEDOUT;
+}
+
+/* offset is the 16bit word offset */
+static int ssb_pcmcia_sprom_read(struct ssb_bus *bus, u16 offset, u16 *value)
+{
+	int err;
+	u8 lo, hi;
+
+	offset *= 2; /* Make byte offset */
+
+	err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO,
+				   (offset & 0x00FF));
+	if (err)
+		return err;
+	err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI,
+				   (offset & 0xFF00) >> 8);
+	if (err)
+		return err;
+	err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_READ);
+	if (err)
+		return err;
+	err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATALO, &lo);
+	if (err)
+		return err;
+	err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATAHI, &hi);
+	if (err)
+		return err;
+	*value = (lo | (((u16)hi) << 8));
+
+	return 0;
+}
+
+/* offset is the 16bit word offset */
+static int ssb_pcmcia_sprom_write(struct ssb_bus *bus, u16 offset, u16 value)
+{
+	int err;
+
+	offset *= 2; /* Make byte offset */
+
+	err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO,
+				   (offset & 0x00FF));
+	if (err)
+		return err;
+	err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI,
+				   (offset & 0xFF00) >> 8);
+	if (err)
+		return err;
+	err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATALO,
+				   (value & 0x00FF));
+	if (err)
+		return err;
+	err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATAHI,
+				   (value & 0xFF00) >> 8);
+	if (err)
+		return err;
+	err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITE);
+	if (err)
+		return err;
+	msleep(20);
+
+	return 0;
+}
+
+/* Read the SPROM image. bufsize is in 16bit words. */
+static int ssb_pcmcia_sprom_read_all(struct ssb_bus *bus, u16 *sprom)
+{
+	int err, i;
+
+	for (i = 0; i < SSB_PCMCIA_SPROM_SIZE; i++) {
+		err = ssb_pcmcia_sprom_read(bus, i, &sprom[i]);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+/* Write the SPROM image. size is in 16bit words. */
+static int ssb_pcmcia_sprom_write_all(struct ssb_bus *bus, const u16 *sprom)
+{
+	int i, err;
+	bool failed = 0;
+	size_t size = SSB_PCMCIA_SPROM_SIZE;
+
+	pr_notice("Writing SPROM. Do NOT turn off the power! Please stand by...\n");
+	err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEEN);
+	if (err) {
+		pr_notice("Could not enable SPROM write access\n");
+		return -EBUSY;
+	}
+	pr_notice("[ 0%%");
+	msleep(500);
+	for (i = 0; i < size; i++) {
+		if (i == size / 4)
+			pr_cont("25%%");
+		else if (i == size / 2)
+			pr_cont("50%%");
+		else if (i == (size * 3) / 4)
+			pr_cont("75%%");
+		else if (i % 2)
+			pr_cont(".");
+		err = ssb_pcmcia_sprom_write(bus, i, sprom[i]);
+		if (err) {
+			pr_notice("Failed to write to SPROM\n");
+			failed = 1;
+			break;
+		}
+	}
+	err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEDIS);
+	if (err) {
+		pr_notice("Could not disable SPROM write access\n");
+		failed = 1;
+	}
+	msleep(500);
+	if (!failed) {
+		pr_cont("100%% ]\n");
+		pr_notice("SPROM written\n");
+	}
+
+	return failed ? -EBUSY : 0;
+}
+
+static int ssb_pcmcia_sprom_check_crc(const u16 *sprom, size_t size)
+{
+	//TODO
+	return 0;
+}
+
+#define GOTO_ERROR_ON(condition, description) do {	\
+	if (unlikely(condition)) {			\
+		error_description = description;	\
+		goto error;				\
+	}						\
+  } while (0)
+
+static int ssb_pcmcia_get_mac(struct pcmcia_device *p_dev,
+			tuple_t *tuple,
+			void *priv)
+{
+	struct ssb_sprom *sprom = priv;
+
+	if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
+		return -EINVAL;
+	if (tuple->TupleDataLen != ETH_ALEN + 2)
+		return -EINVAL;
+	if (tuple->TupleData[1] != ETH_ALEN)
+		return -EINVAL;
+	memcpy(sprom->il0mac, &tuple->TupleData[2], ETH_ALEN);
+	return 0;
+};
+
+static int ssb_pcmcia_do_get_invariants(struct pcmcia_device *p_dev,
+					tuple_t *tuple,
+					void *priv)
+{
+	struct ssb_init_invariants *iv = priv;
+	struct ssb_sprom *sprom = &iv->sprom;
+	struct ssb_boardinfo *bi = &iv->boardinfo;
+	const char *error_description;
+
+	GOTO_ERROR_ON(tuple->TupleDataLen < 1, "VEN tpl < 1");
+	switch (tuple->TupleData[0]) {
+	case SSB_PCMCIA_CIS_ID:
+		GOTO_ERROR_ON((tuple->TupleDataLen != 5) &&
+			      (tuple->TupleDataLen != 7),
+			      "id tpl size");
+		bi->vendor = tuple->TupleData[1] |
+			((u16)tuple->TupleData[2] << 8);
+		break;
+	case SSB_PCMCIA_CIS_BOARDREV:
+		GOTO_ERROR_ON(tuple->TupleDataLen != 2,
+			"boardrev tpl size");
+		sprom->board_rev = tuple->TupleData[1];
+		break;
+	case SSB_PCMCIA_CIS_PA:
+		GOTO_ERROR_ON((tuple->TupleDataLen != 9) &&
+			(tuple->TupleDataLen != 10),
+			"pa tpl size");
+		sprom->pa0b0 = tuple->TupleData[1] |
+			((u16)tuple->TupleData[2] << 8);
+		sprom->pa0b1 = tuple->TupleData[3] |
+			((u16)tuple->TupleData[4] << 8);
+		sprom->pa0b2 = tuple->TupleData[5] |
+			((u16)tuple->TupleData[6] << 8);
+		sprom->itssi_a = tuple->TupleData[7];
+		sprom->itssi_bg = tuple->TupleData[7];
+		sprom->maxpwr_a = tuple->TupleData[8];
+		sprom->maxpwr_bg = tuple->TupleData[8];
+		break;
+	case SSB_PCMCIA_CIS_OEMNAME:
+		/* We ignore this. */
+		break;
+	case SSB_PCMCIA_CIS_CCODE:
+		GOTO_ERROR_ON(tuple->TupleDataLen != 2,
+			"ccode tpl size");
+		sprom->country_code = tuple->TupleData[1];
+		break;
+	case SSB_PCMCIA_CIS_ANTENNA:
+		GOTO_ERROR_ON(tuple->TupleDataLen != 2,
+			"ant tpl size");
+		sprom->ant_available_a = tuple->TupleData[1];
+		sprom->ant_available_bg = tuple->TupleData[1];
+		break;
+	case SSB_PCMCIA_CIS_ANTGAIN:
+		GOTO_ERROR_ON(tuple->TupleDataLen != 2,
+			"antg tpl size");
+		sprom->antenna_gain.a0 = tuple->TupleData[1];
+		sprom->antenna_gain.a1 = tuple->TupleData[1];
+		sprom->antenna_gain.a2 = tuple->TupleData[1];
+		sprom->antenna_gain.a3 = tuple->TupleData[1];
+		break;
+	case SSB_PCMCIA_CIS_BFLAGS:
+		GOTO_ERROR_ON((tuple->TupleDataLen != 3) &&
+			(tuple->TupleDataLen != 5),
+			"bfl tpl size");
+		sprom->boardflags_lo = tuple->TupleData[1] |
+			((u16)tuple->TupleData[2] << 8);
+		break;
+	case SSB_PCMCIA_CIS_LEDS:
+		GOTO_ERROR_ON(tuple->TupleDataLen != 5,
+			"leds tpl size");
+		sprom->gpio0 = tuple->TupleData[1];
+		sprom->gpio1 = tuple->TupleData[2];
+		sprom->gpio2 = tuple->TupleData[3];
+		sprom->gpio3 = tuple->TupleData[4];
+		break;
+	}
+	return -ENOSPC; /* continue with next entry */
+
+error:
+	pr_err("PCMCIA: Failed to fetch device invariants: %s\n",
+	       error_description);
+	return -ENODEV;
+}
+
+
+int ssb_pcmcia_get_invariants(struct ssb_bus *bus,
+			      struct ssb_init_invariants *iv)
+{
+	struct ssb_sprom *sprom = &iv->sprom;
+	int res;
+
+	memset(sprom, 0xFF, sizeof(*sprom));
+	sprom->revision = 1;
+	sprom->boardflags_lo = 0;
+	sprom->boardflags_hi = 0;
+
+	/* First fetch the MAC address. */
+	res = pcmcia_loop_tuple(bus->host_pcmcia, CISTPL_FUNCE,
+				ssb_pcmcia_get_mac, sprom);
+	if (res != 0) {
+		pr_err("PCMCIA: Failed to fetch MAC address\n");
+		return -ENODEV;
+	}
+
+	/* Fetch the vendor specific tuples. */
+	res = pcmcia_loop_tuple(bus->host_pcmcia, SSB_PCMCIA_CIS,
+				ssb_pcmcia_do_get_invariants, iv);
+	if ((res == 0) || (res == -ENOSPC))
+		return 0;
+
+	pr_err("PCMCIA: Failed to fetch device invariants\n");
+	return -ENODEV;
+}
+
+static ssize_t ssb_sprom_show(struct device *pcmciadev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct pcmcia_device *pdev =
+		container_of(pcmciadev, struct pcmcia_device, dev);
+	struct ssb_bus *bus;
+
+	bus = ssb_pcmcia_dev_to_bus(pdev);
+	if (!bus)
+		return -ENODEV;
+
+	return ssb_attr_sprom_show(bus, buf,
+				   ssb_pcmcia_sprom_read_all);
+}
+
+static ssize_t ssb_sprom_store(struct device *pcmciadev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+	struct pcmcia_device *pdev =
+		container_of(pcmciadev, struct pcmcia_device, dev);
+	struct ssb_bus *bus;
+
+	bus = ssb_pcmcia_dev_to_bus(pdev);
+	if (!bus)
+		return -ENODEV;
+
+	return ssb_attr_sprom_store(bus, buf, count,
+				    ssb_pcmcia_sprom_check_crc,
+				    ssb_pcmcia_sprom_write_all);
+}
+
+static DEVICE_ATTR_ADMIN_RW(ssb_sprom);
+
+static int ssb_pcmcia_cor_setup(struct ssb_bus *bus, u8 cor)
+{
+	u8 val;
+	int err;
+
+	err = ssb_pcmcia_cfg_read(bus, cor, &val);
+	if (err)
+		return err;
+	val &= ~COR_SOFT_RESET;
+	val |= COR_FUNC_ENA | COR_IREQ_ENA | COR_LEVEL_REQ;
+	err = ssb_pcmcia_cfg_write(bus, cor, val);
+	if (err)
+		return err;
+	msleep(40);
+
+	return 0;
+}
+
+/* Initialize the PCMCIA hardware. This is called on Init and Resume. */
+int ssb_pcmcia_hardware_setup(struct ssb_bus *bus)
+{
+	int err;
+
+	if (bus->bustype != SSB_BUSTYPE_PCMCIA)
+		return 0;
+
+	/* Switch segment to a known state and sync
+	 * bus->mapped_pcmcia_seg with hardware state. */
+	ssb_pcmcia_switch_segment(bus, 0);
+	/* Init the COR register. */
+	err = ssb_pcmcia_cor_setup(bus, CISREG_COR);
+	if (err)
+		return err;
+	/* Some cards also need this register to get poked. */
+	err = ssb_pcmcia_cor_setup(bus, CISREG_COR + 0x80);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+void ssb_pcmcia_exit(struct ssb_bus *bus)
+{
+	if (bus->bustype != SSB_BUSTYPE_PCMCIA)
+		return;
+
+	device_remove_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom);
+}
+
+int ssb_pcmcia_init(struct ssb_bus *bus)
+{
+	int err;
+
+	if (bus->bustype != SSB_BUSTYPE_PCMCIA)
+		return 0;
+
+	err = ssb_pcmcia_hardware_setup(bus);
+	if (err)
+		goto error;
+
+	bus->sprom_size = SSB_PCMCIA_SPROM_SIZE;
+	mutex_init(&bus->sprom_mutex);
+	err = device_create_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom);
+	if (err)
+		goto error;
+
+	return 0;
+error:
+	pr_err("Failed to initialize PCMCIA host device\n");
+	return err;
+}

linux-7.2.3/drivers/ssb/scan.c

@@ -0,0 +1,446 @@
+/*
+ * Sonics Silicon Backplane
+ * Bus scanning
+ *
+ * Copyright (C) 2005-2007 Michael Buesch <m@bues.ch>
+ * Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
+ * Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
+ * Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
+ * Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ * Copyright (C) 2006 Broadcom Corporation.
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_regs.h>
+#include <linux/pci.h>
+#include <linux/io.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+
+const char *ssb_core_name(u16 coreid)
+{
+	switch (coreid) {
+	case SSB_DEV_CHIPCOMMON:
+		return "ChipCommon";
+	case SSB_DEV_ILINE20:
+		return "ILine 20";
+	case SSB_DEV_SDRAM:
+		return "SDRAM";
+	case SSB_DEV_PCI:
+		return "PCI";
+	case SSB_DEV_MIPS:
+		return "MIPS";
+	case SSB_DEV_ETHERNET:
+		return "Fast Ethernet";
+	case SSB_DEV_V90:
+		return "V90";
+	case SSB_DEV_USB11_HOSTDEV:
+		return "USB 1.1 Hostdev";
+	case SSB_DEV_ADSL:
+		return "ADSL";
+	case SSB_DEV_ILINE100:
+		return "ILine 100";
+	case SSB_DEV_IPSEC:
+		return "IPSEC";
+	case SSB_DEV_PCMCIA:
+		return "PCMCIA";
+	case SSB_DEV_INTERNAL_MEM:
+		return "Internal Memory";
+	case SSB_DEV_MEMC_SDRAM:
+		return "MEMC SDRAM";
+	case SSB_DEV_EXTIF:
+		return "EXTIF";
+	case SSB_DEV_80211:
+		return "IEEE 802.11";
+	case SSB_DEV_MIPS_3302:
+		return "MIPS 3302";
+	case SSB_DEV_USB11_HOST:
+		return "USB 1.1 Host";
+	case SSB_DEV_USB11_DEV:
+		return "USB 1.1 Device";
+	case SSB_DEV_USB20_HOST:
+		return "USB 2.0 Host";
+	case SSB_DEV_USB20_DEV:
+		return "USB 2.0 Device";
+	case SSB_DEV_SDIO_HOST:
+		return "SDIO Host";
+	case SSB_DEV_ROBOSWITCH:
+		return "Roboswitch";
+	case SSB_DEV_PARA_ATA:
+		return "PATA";
+	case SSB_DEV_SATA_XORDMA:
+		return "SATA XOR-DMA";
+	case SSB_DEV_ETHERNET_GBIT:
+		return "GBit Ethernet";
+	case SSB_DEV_PCIE:
+		return "PCI-E";
+	case SSB_DEV_MIMO_PHY:
+		return "MIMO PHY";
+	case SSB_DEV_SRAM_CTRLR:
+		return "SRAM Controller";
+	case SSB_DEV_MINI_MACPHY:
+		return "Mini MACPHY";
+	case SSB_DEV_ARM_1176:
+		return "ARM 1176";
+	case SSB_DEV_ARM_7TDMI:
+		return "ARM 7TDMI";
+	case SSB_DEV_ARM_CM3:
+		return "ARM Cortex M3";
+	}
+	return "UNKNOWN";
+}
+
+static u16 pcidev_to_chipid(struct pci_dev *pci_dev)
+{
+	u16 chipid_fallback = 0;
+
+	switch (pci_dev->device) {
+	case 0x4301:
+		chipid_fallback = 0x4301;
+		break;
+	case 0x4305 ... 0x4307:
+		chipid_fallback = 0x4307;
+		break;
+	case 0x4403:
+		chipid_fallback = 0x4402;
+		break;
+	case 0x4610 ... 0x4615:
+		chipid_fallback = 0x4610;
+		break;
+	case 0x4710 ... 0x4715:
+		chipid_fallback = 0x4710;
+		break;
+	case 0x4320 ... 0x4325:
+		chipid_fallback = 0x4309;
+		break;
+	case PCI_DEVICE_ID_BCM4401:
+	case PCI_DEVICE_ID_BCM4401B0:
+	case PCI_DEVICE_ID_BCM4401B1:
+		chipid_fallback = 0x4401;
+		break;
+	default:
+		dev_err(&pci_dev->dev, "PCI-ID not in fallback list\n");
+	}
+
+	return chipid_fallback;
+}
+
+static u8 chipid_to_nrcores(u16 chipid)
+{
+	switch (chipid) {
+	case 0x5365:
+		return 7;
+	case 0x4306:
+		return 6;
+	case 0x4310:
+		return 8;
+	case 0x4307:
+	case 0x4301:
+		return 5;
+	case 0x4401:
+	case 0x4402:
+		return 3;
+	case 0x4710:
+	case 0x4610:
+	case 0x4704:
+		return 9;
+	default:
+		pr_err("CHIPID not in nrcores fallback list\n");
+	}
+
+	return 1;
+}
+
+static u32 scan_read32(struct ssb_bus *bus, u8 current_coreidx,
+		       u16 offset)
+{
+	u32 lo, hi;
+
+	switch (bus->bustype) {
+	case SSB_BUSTYPE_SSB:
+		offset += current_coreidx * SSB_CORE_SIZE;
+		break;
+	case SSB_BUSTYPE_PCI:
+		break;
+	case SSB_BUSTYPE_PCMCIA:
+		if (offset >= 0x800) {
+			ssb_pcmcia_switch_segment(bus, 1);
+			offset -= 0x800;
+		} else
+			ssb_pcmcia_switch_segment(bus, 0);
+		lo = readw(bus->mmio + offset);
+		hi = readw(bus->mmio + offset + 2);
+		return lo | (hi << 16);
+	case SSB_BUSTYPE_SDIO:
+		offset += current_coreidx * SSB_CORE_SIZE;
+		return ssb_sdio_scan_read32(bus, offset);
+	}
+	return readl(bus->mmio + offset);
+}
+
+static int scan_switchcore(struct ssb_bus *bus, u8 coreidx)
+{
+	switch (bus->bustype) {
+	case SSB_BUSTYPE_SSB:
+		break;
+	case SSB_BUSTYPE_PCI:
+		return ssb_pci_switch_coreidx(bus, coreidx);
+	case SSB_BUSTYPE_PCMCIA:
+		return ssb_pcmcia_switch_coreidx(bus, coreidx);
+	case SSB_BUSTYPE_SDIO:
+		return ssb_sdio_scan_switch_coreidx(bus, coreidx);
+	}
+	return 0;
+}
+
+void ssb_iounmap(struct ssb_bus *bus)
+{
+	switch (bus->bustype) {
+	case SSB_BUSTYPE_SSB:
+	case SSB_BUSTYPE_PCMCIA:
+		iounmap(bus->mmio);
+		break;
+	case SSB_BUSTYPE_PCI:
+#ifdef CONFIG_SSB_PCIHOST
+		pci_iounmap(bus->host_pci, bus->mmio);
+#else
+		WARN_ON(1); /* Can't reach this code. */
+#endif
+		break;
+	case SSB_BUSTYPE_SDIO:
+		break;
+	}
+	bus->mmio = NULL;
+	bus->mapped_device = NULL;
+}
+
+static void __iomem *ssb_ioremap(struct ssb_bus *bus,
+				 unsigned long baseaddr)
+{
+	void __iomem *mmio = NULL;
+
+	switch (bus->bustype) {
+	case SSB_BUSTYPE_SSB:
+		/* Only map the first core for now. */
+		fallthrough;
+	case SSB_BUSTYPE_PCMCIA:
+		mmio = ioremap(baseaddr, SSB_CORE_SIZE);
+		break;
+	case SSB_BUSTYPE_PCI:
+#ifdef CONFIG_SSB_PCIHOST
+		mmio = pci_iomap(bus->host_pci, 0, ~0UL);
+#else
+		WARN_ON(1); /* Can't reach this code. */
+#endif
+		break;
+	case SSB_BUSTYPE_SDIO:
+		/* Nothing to ioremap in the SDIO case, just fake it */
+		mmio = (void __iomem *)baseaddr;
+		break;
+	}
+
+	return mmio;
+}
+
+static int we_support_multiple_80211_cores(struct ssb_bus *bus)
+{
+	/* More than one 802.11 core is only supported by special chips.
+	 * There are chips with two 802.11 cores, but with dangling
+	 * pins on the second core. Be careful and reject them here.
+	 */
+
+#ifdef CONFIG_SSB_PCIHOST
+	if (bus->bustype == SSB_BUSTYPE_PCI) {
+		if (bus->host_pci->vendor == PCI_VENDOR_ID_BROADCOM &&
+		    ((bus->host_pci->device == 0x4313) ||
+		     (bus->host_pci->device == 0x431A) ||
+		     (bus->host_pci->device == 0x4321) ||
+		     (bus->host_pci->device == 0x4324)))
+			return 1;
+	}
+#endif /* CONFIG_SSB_PCIHOST */
+	return 0;
+}
+
+int ssb_bus_scan(struct ssb_bus *bus,
+		 unsigned long baseaddr)
+{
+	int err = -ENOMEM;
+	void __iomem *mmio;
+	u32 idhi, cc, rev, tmp;
+	int dev_i, i;
+	struct ssb_device *dev;
+	int nr_80211_cores = 0;
+
+	mmio = ssb_ioremap(bus, baseaddr);
+	if (!mmio)
+		goto out;
+	bus->mmio = mmio;
+
+	err = scan_switchcore(bus, 0); /* Switch to first core */
+	if (err)
+		goto err_unmap;
+
+	idhi = scan_read32(bus, 0, SSB_IDHIGH);
+	cc = (idhi & SSB_IDHIGH_CC) >> SSB_IDHIGH_CC_SHIFT;
+	rev = (idhi & SSB_IDHIGH_RCLO);
+	rev |= (idhi & SSB_IDHIGH_RCHI) >> SSB_IDHIGH_RCHI_SHIFT;
+
+	bus->nr_devices = 0;
+	if (cc == SSB_DEV_CHIPCOMMON) {
+		tmp = scan_read32(bus, 0, SSB_CHIPCO_CHIPID);
+
+		bus->chip_id = (tmp & SSB_CHIPCO_IDMASK);
+		bus->chip_rev = (tmp & SSB_CHIPCO_REVMASK) >>
+				SSB_CHIPCO_REVSHIFT;
+		bus->chip_package = (tmp & SSB_CHIPCO_PACKMASK) >>
+				    SSB_CHIPCO_PACKSHIFT;
+		if (rev >= 4) {
+			bus->nr_devices = (tmp & SSB_CHIPCO_NRCORESMASK) >>
+					  SSB_CHIPCO_NRCORESSHIFT;
+		}
+		tmp = scan_read32(bus, 0, SSB_CHIPCO_CAP);
+		bus->chipco.capabilities = tmp;
+	} else {
+		if (bus->bustype == SSB_BUSTYPE_PCI) {
+			bus->chip_id = pcidev_to_chipid(bus->host_pci);
+			bus->chip_rev = bus->host_pci->revision;
+			bus->chip_package = 0;
+		} else {
+			bus->chip_id = 0x4710;
+			bus->chip_rev = 0;
+			bus->chip_package = 0;
+		}
+	}
+	pr_info("Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n",
+		bus->chip_id, bus->chip_rev, bus->chip_package);
+	if (!bus->nr_devices)
+		bus->nr_devices = chipid_to_nrcores(bus->chip_id);
+	if (bus->nr_devices > ARRAY_SIZE(bus->devices)) {
+		pr_err("More than %d ssb cores found (%d)\n",
+		       SSB_MAX_NR_CORES, bus->nr_devices);
+		err = -EINVAL;
+		goto err_unmap;
+	}
+	if (bus->bustype == SSB_BUSTYPE_SSB) {
+		/* Now that we know the number of cores,
+		 * remap the whole IO space for all cores.
+		 */
+		err = -ENOMEM;
+		iounmap(mmio);
+		mmio = ioremap(baseaddr, SSB_CORE_SIZE * bus->nr_devices);
+		if (!mmio)
+			goto out;
+		bus->mmio = mmio;
+	}
+
+	/* Fetch basic information about each core/device */
+	for (i = 0, dev_i = 0; i < bus->nr_devices; i++) {
+		err = scan_switchcore(bus, i);
+		if (err)
+			goto err_unmap;
+		dev = &(bus->devices[dev_i]);
+
+		idhi = scan_read32(bus, i, SSB_IDHIGH);
+		dev->id.coreid = (idhi & SSB_IDHIGH_CC) >> SSB_IDHIGH_CC_SHIFT;
+		dev->id.revision = (idhi & SSB_IDHIGH_RCLO);
+		dev->id.revision |= (idhi & SSB_IDHIGH_RCHI) >> SSB_IDHIGH_RCHI_SHIFT;
+		dev->id.vendor = (idhi & SSB_IDHIGH_VC) >> SSB_IDHIGH_VC_SHIFT;
+		dev->core_index = i;
+		dev->bus = bus;
+		dev->ops = bus->ops;
+
+		pr_debug("Core %d found: %s (cc 0x%03X, rev 0x%02X, vendor 0x%04X)\n",
+			 i, ssb_core_name(dev->id.coreid),
+			 dev->id.coreid, dev->id.revision, dev->id.vendor);
+
+		switch (dev->id.coreid) {
+		case SSB_DEV_80211:
+			nr_80211_cores++;
+			if (nr_80211_cores > 1) {
+				if (!we_support_multiple_80211_cores(bus)) {
+					pr_debug("Ignoring additional 802.11 core\n");
+					continue;
+				}
+			}
+			break;
+		case SSB_DEV_EXTIF:
+#ifdef CONFIG_SSB_DRIVER_EXTIF
+			if (bus->extif.dev) {
+				pr_warn("WARNING: Multiple EXTIFs found\n");
+				break;
+			}
+			bus->extif.dev = dev;
+#endif /* CONFIG_SSB_DRIVER_EXTIF */
+			break;
+		case SSB_DEV_CHIPCOMMON:
+			if (bus->chipco.dev) {
+				pr_warn("WARNING: Multiple ChipCommon found\n");
+				break;
+			}
+			bus->chipco.dev = dev;
+			break;
+		case SSB_DEV_MIPS:
+		case SSB_DEV_MIPS_3302:
+#ifdef CONFIG_SSB_DRIVER_MIPS
+			if (bus->mipscore.dev) {
+				pr_warn("WARNING: Multiple MIPS cores found\n");
+				break;
+			}
+			bus->mipscore.dev = dev;
+#endif /* CONFIG_SSB_DRIVER_MIPS */
+			break;
+		case SSB_DEV_PCI:
+		case SSB_DEV_PCIE:
+#ifdef CONFIG_SSB_DRIVER_PCICORE
+			if (bus->bustype == SSB_BUSTYPE_PCI) {
+				/* Ignore PCI cores on PCI-E cards.
+				 * Ignore PCI-E cores on PCI cards.
+				 */
+				if (dev->id.coreid == SSB_DEV_PCI) {
+					if (pci_is_pcie(bus->host_pci))
+						continue;
+				} else {
+					if (!pci_is_pcie(bus->host_pci))
+						continue;
+				}
+			}
+			if (bus->pcicore.dev) {
+				pr_warn("WARNING: Multiple PCI(E) cores found\n");
+				break;
+			}
+			bus->pcicore.dev = dev;
+#endif /* CONFIG_SSB_DRIVER_PCICORE */
+			break;
+		case SSB_DEV_ETHERNET:
+			if (bus->bustype == SSB_BUSTYPE_PCI) {
+				if (bus->host_pci->vendor == PCI_VENDOR_ID_BROADCOM &&
+				    (bus->host_pci->device & 0xFF00) == 0x4300) {
+					/* This is a dangling ethernet core on a
+					 * wireless device. Ignore it.
+					 */
+					continue;
+				}
+			}
+			break;
+		default:
+			break;
+		}
+
+		dev_i++;
+	}
+	bus->nr_devices = dev_i;
+
+	err = 0;
+out:
+	return err;
+err_unmap:
+	ssb_iounmap(bus);
+	goto out;
+}

linux-7.2.3/drivers/ssb/sdio.c

@@ -0,0 +1,605 @@
+/*
+ * Sonics Silicon Backplane
+ * SDIO-Hostbus related functions
+ *
+ * Copyright 2009 Albert Herranz <albert_herranz@yahoo.es>
+ *
+ * Based on drivers/ssb/pcmcia.c
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2007-2008 Michael Buesch <m@bues.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ *
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ssb/ssb.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/etherdevice.h>
+#include <linux/mmc/sdio_func.h>
+
+/* Define the following to 1 to enable a printk on each coreswitch. */
+#define SSB_VERBOSE_SDIOCORESWITCH_DEBUG		0
+
+
+/* Hardware invariants CIS tuples */
+#define SSB_SDIO_CIS			0x80
+#define  SSB_SDIO_CIS_SROMREV		0x00
+#define  SSB_SDIO_CIS_ID		0x01
+#define  SSB_SDIO_CIS_BOARDREV		0x02
+#define  SSB_SDIO_CIS_PA		0x03
+#define   SSB_SDIO_CIS_PA_PA0B0_LO	0
+#define   SSB_SDIO_CIS_PA_PA0B0_HI	1
+#define   SSB_SDIO_CIS_PA_PA0B1_LO	2
+#define   SSB_SDIO_CIS_PA_PA0B1_HI	3
+#define   SSB_SDIO_CIS_PA_PA0B2_LO	4
+#define   SSB_SDIO_CIS_PA_PA0B2_HI	5
+#define   SSB_SDIO_CIS_PA_ITSSI		6
+#define   SSB_SDIO_CIS_PA_MAXPOW	7
+#define  SSB_SDIO_CIS_OEMNAME		0x04
+#define  SSB_SDIO_CIS_CCODE		0x05
+#define  SSB_SDIO_CIS_ANTENNA		0x06
+#define  SSB_SDIO_CIS_ANTGAIN		0x07
+#define  SSB_SDIO_CIS_BFLAGS		0x08
+#define  SSB_SDIO_CIS_LEDS		0x09
+
+#define CISTPL_FUNCE_LAN_NODE_ID        0x04	/* same as in PCMCIA */
+
+
+/*
+ * Function 1 miscellaneous registers.
+ *
+ * Definitions match src/include/sbsdio.h from the
+ * Android Open Source Project
+ * http://android.git.kernel.org/?p=platform/system/wlan/broadcom.git
+ *
+ */
+#define SBSDIO_FUNC1_SBADDRLOW	0x1000a	/* SB Address window Low (b15) */
+#define SBSDIO_FUNC1_SBADDRMID	0x1000b	/* SB Address window Mid (b23-b16) */
+#define SBSDIO_FUNC1_SBADDRHIGH	0x1000c	/* SB Address window High (b24-b31) */
+
+/* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */
+#define SBSDIO_SBADDRLOW_MASK	0x80	/* Valid address bits in SBADDRLOW */
+#define SBSDIO_SBADDRMID_MASK	0xff	/* Valid address bits in SBADDRMID */
+#define SBSDIO_SBADDRHIGH_MASK	0xff	/* Valid address bits in SBADDRHIGH */
+
+#define SBSDIO_SB_OFT_ADDR_MASK	0x7FFF	/* sb offset addr is <= 15 bits, 32k */
+
+/* REVISIT: this flag doesn't seem to matter */
+#define SBSDIO_SB_ACCESS_2_4B_FLAG	0x8000	/* forces 32-bit SB access */
+
+
+/*
+ * Address map within the SDIO function address space (128K).
+ *
+ *   Start   End     Description
+ *   ------- ------- ------------------------------------------
+ *   0x00000 0x0ffff selected backplane address window (64K)
+ *   0x10000 0x1ffff backplane control registers (max 64K)
+ *
+ * The current address window is configured by writing to registers
+ * SBADDRLOW, SBADDRMID and SBADDRHIGH.
+ *
+ * In order to access the contents of a 32-bit Silicon Backplane address
+ * the backplane address window must be first loaded with the highest
+ * 16 bits of the target address. Then, an access must be done to the
+ * SDIO function address space using the lower 15 bits of the address.
+ * Bit 15 of the address must be set when doing 32 bit accesses.
+ *
+ * 10987654321098765432109876543210
+ * WWWWWWWWWWWWWWWWW                 SB Address Window
+ *                 OOOOOOOOOOOOOOOO  Offset within SB Address Window
+ *                 a                 32-bit access flag
+ */
+
+
+/*
+ * SSB I/O via SDIO.
+ *
+ * NOTE: SDIO address @addr is 17 bits long (SDIO address space is 128K).
+ */
+
+static inline struct device *ssb_sdio_dev(struct ssb_bus *bus)
+{
+	return &bus->host_sdio->dev;
+}
+
+/* host claimed */
+static int ssb_sdio_writeb(struct ssb_bus *bus, unsigned int addr, u8 val)
+{
+	int error = 0;
+
+	sdio_writeb(bus->host_sdio, val, addr, &error);
+	if (unlikely(error)) {
+		dev_dbg(ssb_sdio_dev(bus), "%08X <- %02x, error %d\n",
+			addr, val, error);
+	}
+
+	return error;
+}
+
+#if 0
+static u8 ssb_sdio_readb(struct ssb_bus *bus, unsigned int addr)
+{
+	u8 val;
+	int error = 0;
+
+	val = sdio_readb(bus->host_sdio, addr, &error);
+	if (unlikely(error)) {
+		dev_dbg(ssb_sdio_dev(bus), "%08X -> %02x, error %d\n",
+			addr, val, error);
+	}
+
+	return val;
+}
+#endif
+
+/* host claimed */
+static int ssb_sdio_set_sbaddr_window(struct ssb_bus *bus, u32 address)
+{
+	int error;
+
+	error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRLOW,
+				(address >> 8) & SBSDIO_SBADDRLOW_MASK);
+	if (error)
+		goto out;
+	error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRMID,
+				(address >> 16) & SBSDIO_SBADDRMID_MASK);
+	if (error)
+		goto out;
+	error = ssb_sdio_writeb(bus, SBSDIO_FUNC1_SBADDRHIGH,
+				(address >> 24) & SBSDIO_SBADDRHIGH_MASK);
+	if (error)
+		goto out;
+	bus->sdio_sbaddr = address;
+out:
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "failed to set address window"
+			" to 0x%08x, error %d\n", address, error);
+	}
+
+	return error;
+}
+
+/* for enumeration use only */
+u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset)
+{
+	u32 val;
+	int error;
+
+	sdio_claim_host(bus->host_sdio);
+	val = sdio_readl(bus->host_sdio, offset, &error);
+	sdio_release_host(bus->host_sdio);
+	if (unlikely(error)) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %08x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+
+	return val;
+}
+
+/* for enumeration use only */
+int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx)
+{
+	u32 sbaddr;
+	int error;
+
+	sbaddr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;
+	sdio_claim_host(bus->host_sdio);
+	error = ssb_sdio_set_sbaddr_window(bus, sbaddr);
+	sdio_release_host(bus->host_sdio);
+	if (error) {
+		dev_err(ssb_sdio_dev(bus), "failed to switch to core %u,"
+			" error %d\n", coreidx, error);
+		goto out;
+	}
+out:
+	return error;
+}
+
+/* host must be already claimed */
+static int ssb_sdio_switch_core(struct ssb_bus *bus, struct ssb_device *dev)
+{
+	u8 coreidx = dev->core_index;
+	u32 sbaddr;
+	int error = 0;
+
+	sbaddr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;
+	if (unlikely(bus->sdio_sbaddr != sbaddr)) {
+#if SSB_VERBOSE_SDIOCORESWITCH_DEBUG
+		dev_info(ssb_sdio_dev(bus),
+			   "switching to %s core, index %d\n",
+			   ssb_core_name(dev->id.coreid), coreidx);
+#endif
+		error = ssb_sdio_set_sbaddr_window(bus, sbaddr);
+		if (error) {
+			dev_dbg(ssb_sdio_dev(bus), "failed to switch to"
+				" core %u, error %d\n", coreidx, error);
+			goto out;
+		}
+		bus->mapped_device = dev;
+	}
+
+out:
+	return error;
+}
+
+static u8 ssb_sdio_read8(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	u8 val = 0xff;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	val = sdio_readb(bus->host_sdio, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %02x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+
+	return val;
+}
+
+static u16 ssb_sdio_read16(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	u16 val = 0xffff;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	val = sdio_readw(bus->host_sdio, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %04x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+
+	return val;
+}
+
+static u32 ssb_sdio_read32(struct ssb_device *dev, u16 offset)
+{
+	struct ssb_bus *bus = dev->bus;
+	u32 val = 0xffffffff;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+	val = sdio_readl(bus->host_sdio, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X > %08x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+
+	return val;
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_sdio_block_read(struct ssb_device *dev, void *buffer,
+				  size_t count, u16 offset, u8 reg_width)
+{
+	size_t saved_count = count;
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev))) {
+		error = -EIO;
+		memset(buffer, 0xff, count);
+		goto err_out;
+	}
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+
+	switch (reg_width) {
+	case sizeof(u8): {
+		error = sdio_readsb(bus->host_sdio, buffer, offset, count);
+		break;
+	}
+	case sizeof(u16): {
+		WARN_ON(count & 1);
+		error = sdio_readsb(bus->host_sdio, buffer, offset, count);
+		break;
+	}
+	case sizeof(u32): {
+		WARN_ON(count & 3);
+		offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+		error = sdio_readsb(bus->host_sdio, buffer, offset, count);
+		break;
+	}
+	default:
+		WARN_ON(1);
+	}
+	if (!error)
+		goto out;
+
+err_out:
+	dev_dbg(ssb_sdio_dev(bus), "%04X:%04X (width=%u, len=%zu), error %d\n",
+		bus->sdio_sbaddr >> 16, offset, reg_width, saved_count, error);
+out:
+	sdio_release_host(bus->host_sdio);
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
+static void ssb_sdio_write8(struct ssb_device *dev, u16 offset, u8 val)
+{
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	sdio_writeb(bus->host_sdio, val, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %02x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+static void ssb_sdio_write16(struct ssb_device *dev, u16 offset, u16 val)
+{
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	sdio_writew(bus->host_sdio, val, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %04x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+static void ssb_sdio_write32(struct ssb_device *dev, u16 offset, u32 val)
+{
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev)))
+		goto out;
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+	offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+	sdio_writel(bus->host_sdio, val, offset, &error);
+	if (error) {
+		dev_dbg(ssb_sdio_dev(bus), "%04X:%04X < %08x, error %d\n",
+			bus->sdio_sbaddr >> 16, offset, val, error);
+	}
+	if (bus->quirks & SSB_QUIRK_SDIO_READ_AFTER_WRITE32)
+		sdio_readl(bus->host_sdio, 0, &error);
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_sdio_block_write(struct ssb_device *dev, const void *buffer,
+				   size_t count, u16 offset, u8 reg_width)
+{
+	size_t saved_count = count;
+	struct ssb_bus *bus = dev->bus;
+	int error = 0;
+
+	sdio_claim_host(bus->host_sdio);
+	if (unlikely(ssb_sdio_switch_core(bus, dev))) {
+		error = -EIO;
+		goto err_out;
+	}
+	offset |= bus->sdio_sbaddr & 0xffff;
+	offset &= SBSDIO_SB_OFT_ADDR_MASK;
+
+	switch (reg_width) {
+	case sizeof(u8):
+		error = sdio_writesb(bus->host_sdio, offset,
+				     (void *)buffer, count);
+		break;
+	case sizeof(u16):
+		WARN_ON(count & 1);
+		error = sdio_writesb(bus->host_sdio, offset,
+				     (void *)buffer, count);
+		break;
+	case sizeof(u32):
+		WARN_ON(count & 3);
+		offset |= SBSDIO_SB_ACCESS_2_4B_FLAG;	/* 32 bit data access */
+		error = sdio_writesb(bus->host_sdio, offset,
+				     (void *)buffer, count);
+		break;
+	default:
+		WARN_ON(1);
+	}
+	if (!error)
+		goto out;
+
+err_out:
+	dev_dbg(ssb_sdio_dev(bus), "%04X:%04X (width=%u, len=%zu), error %d\n",
+		bus->sdio_sbaddr >> 16, offset, reg_width, saved_count, error);
+out:
+	sdio_release_host(bus->host_sdio);
+}
+
+#endif /* CONFIG_SSB_BLOCKIO */
+
+/* Not "static", as it's used in main.c */
+const struct ssb_bus_ops ssb_sdio_ops = {
+	.read8		= ssb_sdio_read8,
+	.read16		= ssb_sdio_read16,
+	.read32		= ssb_sdio_read32,
+	.write8		= ssb_sdio_write8,
+	.write16	= ssb_sdio_write16,
+	.write32	= ssb_sdio_write32,
+#ifdef CONFIG_SSB_BLOCKIO
+	.block_read	= ssb_sdio_block_read,
+	.block_write	= ssb_sdio_block_write,
+#endif
+};
+
+#define GOTO_ERROR_ON(condition, description) do {	\
+	if (unlikely(condition)) {			\
+		error_description = description;	\
+		goto error;				\
+	}						\
+  } while (0)
+
+int ssb_sdio_get_invariants(struct ssb_bus *bus,
+			    struct ssb_init_invariants *iv)
+{
+	struct ssb_sprom *sprom = &iv->sprom;
+	struct ssb_boardinfo *bi = &iv->boardinfo;
+	const char *error_description = "none";
+	struct sdio_func_tuple *tuple;
+	void *mac;
+
+	memset(sprom, 0xFF, sizeof(*sprom));
+	sprom->boardflags_lo = 0;
+	sprom->boardflags_hi = 0;
+
+	tuple = bus->host_sdio->tuples;
+	while (tuple) {
+		switch (tuple->code) {
+		case 0x22: /* extended function */
+			switch (tuple->data[0]) {
+			case CISTPL_FUNCE_LAN_NODE_ID:
+				GOTO_ERROR_ON((tuple->size != 7) &&
+					      (tuple->data[1] != 6),
+					      "mac tpl size");
+				/* fetch the MAC address. */
+				mac = tuple->data + 2;
+				memcpy(sprom->il0mac, mac, ETH_ALEN);
+				memcpy(sprom->et1mac, mac, ETH_ALEN);
+				break;
+			default:
+				break;
+			}
+			break;
+		case 0x80: /* vendor specific tuple */
+			switch (tuple->data[0]) {
+			case SSB_SDIO_CIS_SROMREV:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "sromrev tpl size");
+				sprom->revision = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_ID:
+				GOTO_ERROR_ON((tuple->size != 5) &&
+					      (tuple->size != 7),
+					      "id tpl size");
+				bi->vendor = tuple->data[1] |
+					     (tuple->data[2]<<8);
+				break;
+			case SSB_SDIO_CIS_BOARDREV:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "boardrev tpl size");
+				sprom->board_rev = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_PA:
+				GOTO_ERROR_ON((tuple->size != 9) &&
+					      (tuple->size != 10),
+					      "pa tpl size");
+				sprom->pa0b0 = tuple->data[1] |
+					 ((u16)tuple->data[2] << 8);
+				sprom->pa0b1 = tuple->data[3] |
+					 ((u16)tuple->data[4] << 8);
+				sprom->pa0b2 = tuple->data[5] |
+					 ((u16)tuple->data[6] << 8);
+				sprom->itssi_a = tuple->data[7];
+				sprom->itssi_bg = tuple->data[7];
+				sprom->maxpwr_a = tuple->data[8];
+				sprom->maxpwr_bg = tuple->data[8];
+				break;
+			case SSB_SDIO_CIS_OEMNAME:
+				/* Not present */
+				break;
+			case SSB_SDIO_CIS_CCODE:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "ccode tpl size");
+				sprom->country_code = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_ANTENNA:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "ant tpl size");
+				sprom->ant_available_a = tuple->data[1];
+				sprom->ant_available_bg = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_ANTGAIN:
+				GOTO_ERROR_ON(tuple->size != 2,
+					      "antg tpl size");
+				sprom->antenna_gain.a0 = tuple->data[1];
+				sprom->antenna_gain.a1 = tuple->data[1];
+				sprom->antenna_gain.a2 = tuple->data[1];
+				sprom->antenna_gain.a3 = tuple->data[1];
+				break;
+			case SSB_SDIO_CIS_BFLAGS:
+				GOTO_ERROR_ON((tuple->size != 3) &&
+					      (tuple->size != 5),
+					      "bfl tpl size");
+				sprom->boardflags_lo = tuple->data[1] |
+						 ((u16)tuple->data[2] << 8);
+				break;
+			case SSB_SDIO_CIS_LEDS:
+				GOTO_ERROR_ON(tuple->size != 5,
+					      "leds tpl size");
+				sprom->gpio0 = tuple->data[1];
+				sprom->gpio1 = tuple->data[2];
+				sprom->gpio2 = tuple->data[3];
+				sprom->gpio3 = tuple->data[4];
+				break;
+			default:
+				break;
+			}
+			break;
+		default:
+			break;
+		}
+		tuple = tuple->next;
+	}
+
+	return 0;
+error:
+	dev_err(ssb_sdio_dev(bus), "failed to fetch device invariants: %s\n",
+		error_description);
+	return -ENODEV;
+}
+
+void ssb_sdio_exit(struct ssb_bus *bus)
+{
+	if (bus->bustype != SSB_BUSTYPE_SDIO)
+		return;
+	/* Nothing to do here. */
+}
+
+int ssb_sdio_init(struct ssb_bus *bus)
+{
+	if (bus->bustype != SSB_BUSTYPE_SDIO)
+		return 0;
+
+	bus->sdio_sbaddr = ~0;
+
+	return 0;
+}

linux-7.2.3/drivers/ssb/sprom.c

@@ -0,0 +1,204 @@
+/*
+ * Sonics Silicon Backplane
+ * Common SPROM support routines
+ *
+ * Copyright (C) 2005-2008 Michael Buesch <m@bues.ch>
+ * Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
+ * Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
+ * Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
+ * Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include "ssb_private.h"
+
+#include <linux/ctype.h>
+#include <linux/slab.h>
+
+
+static int(*get_fallback_sprom)(struct ssb_bus *dev, struct ssb_sprom *out);
+
+
+static int sprom2hex(const u16 *sprom, char *buf, size_t buf_len,
+		     size_t sprom_size_words)
+{
+	int i, pos = 0;
+
+	for (i = 0; i < sprom_size_words; i++)
+		pos += scnprintf(buf + pos, buf_len - pos - 1,
+				"%04X", swab16(sprom[i]) & 0xFFFF);
+	pos += scnprintf(buf + pos, buf_len - pos - 1, "\n");
+
+	return pos + 1;
+}
+
+static int hex2sprom(u16 *sprom, const char *dump, size_t len,
+		     size_t sprom_size_words)
+{
+	char c, tmp[5] = { 0 };
+	int err, cnt = 0;
+	unsigned long parsed;
+
+	/* Strip whitespace at the end. */
+	while (len) {
+		c = dump[len - 1];
+		if (!isspace(c) && c != '\0')
+			break;
+		len--;
+	}
+	/* Length must match exactly. */
+	if (len != sprom_size_words * 4)
+		return -EINVAL;
+
+	while (cnt < sprom_size_words) {
+		memcpy(tmp, dump, 4);
+		dump += 4;
+		err = kstrtoul(tmp, 16, &parsed);
+		if (err)
+			return err;
+		sprom[cnt++] = swab16((u16)parsed);
+	}
+
+	return 0;
+}
+
+/* Common sprom device-attribute show-handler */
+ssize_t ssb_attr_sprom_show(struct ssb_bus *bus, char *buf,
+			    int (*sprom_read)(struct ssb_bus *bus, u16 *sprom))
+{
+	u16 *sprom;
+	int err = -ENOMEM;
+	ssize_t count = 0;
+	size_t sprom_size_words = bus->sprom_size;
+
+	sprom = kcalloc(sprom_size_words, sizeof(u16), GFP_KERNEL);
+	if (!sprom)
+		goto out;
+
+	/* Use interruptible locking, as the SPROM write might
+	 * be holding the lock for several seconds. So allow userspace
+	 * to cancel operation.
+	 */
+	err = -ERESTARTSYS;
+	if (mutex_lock_interruptible(&bus->sprom_mutex))
+		goto out_kfree;
+	err = sprom_read(bus, sprom);
+	mutex_unlock(&bus->sprom_mutex);
+
+	if (!err)
+		count = sprom2hex(sprom, buf, PAGE_SIZE, sprom_size_words);
+
+out_kfree:
+	kfree(sprom);
+out:
+	return err ? err : count;
+}
+
+/* Common sprom device-attribute store-handler */
+ssize_t ssb_attr_sprom_store(struct ssb_bus *bus,
+			     const char *buf, size_t count,
+			     int (*sprom_check_crc)(const u16 *sprom, size_t size),
+			     int (*sprom_write)(struct ssb_bus *bus, const u16 *sprom))
+{
+	u16 *sprom;
+	int res = 0, err = -ENOMEM;
+	size_t sprom_size_words = bus->sprom_size;
+	struct ssb_freeze_context freeze;
+
+	sprom = kcalloc(bus->sprom_size, sizeof(u16), GFP_KERNEL);
+	if (!sprom)
+		goto out;
+	err = hex2sprom(sprom, buf, count, sprom_size_words);
+	if (err) {
+		err = -EINVAL;
+		goto out_kfree;
+	}
+	err = sprom_check_crc(sprom, sprom_size_words);
+	if (err) {
+		err = -EINVAL;
+		goto out_kfree;
+	}
+
+	/* Use interruptible locking, as the SPROM write might
+	 * be holding the lock for several seconds. So allow userspace
+	 * to cancel operation.
+	 */
+	err = -ERESTARTSYS;
+	if (mutex_lock_interruptible(&bus->sprom_mutex))
+		goto out_kfree;
+	err = ssb_devices_freeze(bus, &freeze);
+	if (err) {
+		pr_err("SPROM write: Could not freeze all devices\n");
+		goto out_unlock;
+	}
+	res = sprom_write(bus, sprom);
+	err = ssb_devices_thaw(&freeze);
+	if (err)
+		pr_err("SPROM write: Could not thaw all devices\n");
+out_unlock:
+	mutex_unlock(&bus->sprom_mutex);
+out_kfree:
+	kfree(sprom);
+out:
+	if (res)
+		return res;
+	return err ? err : count;
+}
+
+/**
+ * ssb_arch_register_fallback_sprom - Registers a method providing a
+ * fallback SPROM if no SPROM is found.
+ *
+ * @sprom_callback: The callback function.
+ *
+ * With this function the architecture implementation may register a
+ * callback handler which fills the SPROM data structure. The fallback is
+ * only used for PCI based SSB devices, where no valid SPROM can be found
+ * in the shadow registers.
+ *
+ * This function is useful for weird architectures that have a half-assed
+ * SSB device hardwired to their PCI bus.
+ *
+ * Note that it does only work with PCI attached SSB devices. PCMCIA
+ * devices currently don't use this fallback.
+ * Architectures must provide the SPROM for native SSB devices anyway, so
+ * the fallback also isn't used for native devices.
+ *
+ * This function is available for architecture code, only. So it is not
+ * exported.
+ */
+int ssb_arch_register_fallback_sprom(int (*sprom_callback)(struct ssb_bus *bus,
+				     struct ssb_sprom *out))
+{
+	if (get_fallback_sprom)
+		return -EEXIST;
+	get_fallback_sprom = sprom_callback;
+
+	return 0;
+}
+
+int ssb_fill_sprom_with_fallback(struct ssb_bus *bus, struct ssb_sprom *out)
+{
+	if (!get_fallback_sprom)
+		return -ENOENT;
+
+	return get_fallback_sprom(bus, out);
+}
+
+/* https://bcm-v4.sipsolutions.net/802.11/IsSpromAvailable */
+bool ssb_is_sprom_available(struct ssb_bus *bus)
+{
+	/* status register only exists on chipcomon rev >= 11 and we need check
+	 * for >= 31 only
+	 */
+	/* this routine differs from specs as we do not access SPROM directly
+	 * on PCMCIA
+	 */
+	if (bus->bustype == SSB_BUSTYPE_PCI &&
+	    bus->chipco.dev &&	/* can be unavailable! */
+	    bus->chipco.dev->id.revision >= 31)
+		return bus->chipco.capabilities & SSB_CHIPCO_CAP_SPROM;
+
+	return true;
+}

linux-7.2.3/drivers/ssb/ssb_private.h

@@ -0,0 +1,266 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LINUX_SSB_PRIVATE_H_
+#define LINUX_SSB_PRIVATE_H_
+
+#define PFX		"ssb: "
+#define pr_fmt(fmt)	PFX fmt
+
+#include <linux/ssb/ssb.h>
+#include <linux/types.h>
+#include <linux/bcm47xx_wdt.h>
+
+
+/* pci.c */
+#ifdef CONFIG_SSB_PCIHOST
+extern int ssb_pci_switch_core(struct ssb_bus *bus,
+			       struct ssb_device *dev);
+extern int ssb_pci_switch_coreidx(struct ssb_bus *bus,
+				  u8 coreidx);
+extern int ssb_pci_xtal(struct ssb_bus *bus, u32 what,
+			int turn_on);
+extern int ssb_pci_get_invariants(struct ssb_bus *bus,
+				  struct ssb_init_invariants *iv);
+extern void ssb_pci_exit(struct ssb_bus *bus);
+extern int ssb_pci_init(struct ssb_bus *bus);
+extern const struct ssb_bus_ops ssb_pci_ops;
+
+#else /* CONFIG_SSB_PCIHOST */
+
+static inline int ssb_pci_switch_core(struct ssb_bus *bus,
+				      struct ssb_device *dev)
+{
+	return 0;
+}
+static inline int ssb_pci_switch_coreidx(struct ssb_bus *bus,
+					 u8 coreidx)
+{
+	return 0;
+}
+static inline int ssb_pci_xtal(struct ssb_bus *bus, u32 what,
+			       int turn_on)
+{
+	return 0;
+}
+static inline void ssb_pci_exit(struct ssb_bus *bus)
+{
+}
+static inline int ssb_pci_init(struct ssb_bus *bus)
+{
+	return 0;
+}
+#endif /* CONFIG_SSB_PCIHOST */
+
+
+/* pcmcia.c */
+#ifdef CONFIG_SSB_PCMCIAHOST
+extern int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus,
+				     u8 coreidx);
+extern int ssb_pcmcia_switch_segment(struct ssb_bus *bus,
+				     u8 seg);
+extern int ssb_pcmcia_get_invariants(struct ssb_bus *bus,
+				     struct ssb_init_invariants *iv);
+extern int ssb_pcmcia_hardware_setup(struct ssb_bus *bus);
+extern void ssb_pcmcia_exit(struct ssb_bus *bus);
+extern int ssb_pcmcia_init(struct ssb_bus *bus);
+extern int ssb_host_pcmcia_init(void);
+extern void ssb_host_pcmcia_exit(void);
+extern const struct ssb_bus_ops ssb_pcmcia_ops;
+#else /* CONFIG_SSB_PCMCIAHOST */
+static inline int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus,
+					    u8 coreidx)
+{
+	return 0;
+}
+static inline int ssb_pcmcia_switch_segment(struct ssb_bus *bus,
+					    u8 seg)
+{
+	return 0;
+}
+static inline int ssb_pcmcia_hardware_setup(struct ssb_bus *bus)
+{
+	return 0;
+}
+static inline void ssb_pcmcia_exit(struct ssb_bus *bus)
+{
+}
+static inline int ssb_pcmcia_init(struct ssb_bus *bus)
+{
+	return 0;
+}
+static inline int ssb_host_pcmcia_init(void)
+{
+	return 0;
+}
+static inline void ssb_host_pcmcia_exit(void)
+{
+}
+#endif /* CONFIG_SSB_PCMCIAHOST */
+
+/* sdio.c */
+#ifdef CONFIG_SSB_SDIOHOST
+extern int ssb_sdio_get_invariants(struct ssb_bus *bus,
+				     struct ssb_init_invariants *iv);
+
+extern u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset);
+extern int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx);
+extern void ssb_sdio_exit(struct ssb_bus *bus);
+extern int ssb_sdio_init(struct ssb_bus *bus);
+
+extern const struct ssb_bus_ops ssb_sdio_ops;
+#else /* CONFIG_SSB_SDIOHOST */
+static inline u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset)
+{
+	return 0;
+}
+static inline int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx)
+{
+	return 0;
+}
+static inline void ssb_sdio_exit(struct ssb_bus *bus)
+{
+}
+static inline int ssb_sdio_init(struct ssb_bus *bus)
+{
+	return 0;
+}
+#endif /* CONFIG_SSB_SDIOHOST */
+
+/**************************************************
+ * host_soc.c
+ **************************************************/
+
+#ifdef CONFIG_SSB_HOST_SOC
+extern const struct ssb_bus_ops ssb_host_soc_ops;
+
+extern int ssb_host_soc_get_invariants(struct ssb_bus *bus,
+				       struct ssb_init_invariants *iv);
+#endif
+
+/* scan.c */
+extern const char *ssb_core_name(u16 coreid);
+extern int ssb_bus_scan(struct ssb_bus *bus,
+			unsigned long baseaddr);
+extern void ssb_iounmap(struct ssb_bus *ssb);
+
+
+/* sprom.c */
+extern
+ssize_t ssb_attr_sprom_show(struct ssb_bus *bus, char *buf,
+			    int (*sprom_read)(struct ssb_bus *bus, u16 *sprom));
+extern
+ssize_t ssb_attr_sprom_store(struct ssb_bus *bus,
+			     const char *buf, size_t count,
+			     int (*sprom_check_crc)(const u16 *sprom, size_t size),
+			     int (*sprom_write)(struct ssb_bus *bus, const u16 *sprom));
+extern int ssb_fill_sprom_with_fallback(struct ssb_bus *bus,
+					struct ssb_sprom *out);
+
+
+/* core.c */
+extern u32 ssb_calc_clock_rate(u32 plltype, u32 n, u32 m);
+extern struct ssb_bus *ssb_pci_dev_to_bus(struct pci_dev *pdev);
+int ssb_for_each_bus_call(unsigned long data,
+			  int (*func)(struct ssb_bus *bus, unsigned long data));
+extern struct ssb_bus *ssb_pcmcia_dev_to_bus(struct pcmcia_device *pdev);
+
+struct ssb_freeze_context {
+	/* Pointer to the bus */
+	struct ssb_bus *bus;
+	/* Boolean list to indicate whether a device is frozen on this bus. */
+	bool device_frozen[SSB_MAX_NR_CORES];
+};
+extern int ssb_devices_freeze(struct ssb_bus *bus, struct ssb_freeze_context *ctx);
+extern int ssb_devices_thaw(struct ssb_freeze_context *ctx);
+
+
+
+/* b43_pci_bridge.c */
+#ifdef CONFIG_SSB_B43_PCI_BRIDGE
+extern int __init b43_pci_ssb_bridge_init(void);
+extern void __exit b43_pci_ssb_bridge_exit(void);
+#else /* CONFIG_SSB_B43_PCI_BRIDGE */
+static inline int b43_pci_ssb_bridge_init(void)
+{
+	return 0;
+}
+static inline void b43_pci_ssb_bridge_exit(void)
+{
+}
+#endif /* CONFIG_SSB_B43_PCI_BRIDGE */
+
+/* driver_chipcommon_pmu.c */
+extern u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc);
+extern u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc);
+extern u32 ssb_pmu_get_alp_clock(struct ssb_chipcommon *cc);
+
+extern u32 ssb_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
+					     u32 ticks);
+extern u32 ssb_chipco_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms);
+
+/* driver_chipcommon_sflash.c */
+#ifdef CONFIG_SSB_SFLASH
+int ssb_sflash_init(struct ssb_chipcommon *cc);
+#else
+static inline int ssb_sflash_init(struct ssb_chipcommon *cc)
+{
+	pr_err("Serial flash not supported\n");
+	return 0;
+}
+#endif /* CONFIG_SSB_SFLASH */
+
+#ifdef CONFIG_SSB_DRIVER_MIPS
+extern struct platform_device ssb_pflash_dev;
+#endif
+
+#ifdef CONFIG_SSB_SFLASH
+extern struct platform_device ssb_sflash_dev;
+#endif
+
+#ifdef CONFIG_SSB_DRIVER_EXTIF
+extern u32 ssb_extif_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks);
+extern u32 ssb_extif_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms);
+#else
+static inline u32 ssb_extif_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
+						   u32 ticks)
+{
+	return 0;
+}
+static inline u32 ssb_extif_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt,
+						  u32 ms)
+{
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_SSB_EMBEDDED
+extern int ssb_watchdog_register(struct ssb_bus *bus);
+#else /* CONFIG_SSB_EMBEDDED */
+static inline int ssb_watchdog_register(struct ssb_bus *bus)
+{
+	return 0;
+}
+#endif /* CONFIG_SSB_EMBEDDED */
+
+#ifdef CONFIG_SSB_DRIVER_EXTIF
+extern void ssb_extif_init(struct ssb_extif *extif);
+#else
+static inline void ssb_extif_init(struct ssb_extif *extif)
+{
+}
+#endif
+
+#ifdef CONFIG_SSB_DRIVER_GPIO
+extern int ssb_gpio_init(struct ssb_bus *bus);
+extern int ssb_gpio_unregister(struct ssb_bus *bus);
+#else /* CONFIG_SSB_DRIVER_GPIO */
+static inline int ssb_gpio_init(struct ssb_bus *bus)
+{
+	return -ENOTSUPP;
+}
+static inline int ssb_gpio_unregister(struct ssb_bus *bus)
+{
+	return 0;
+}
+#endif /* CONFIG_SSB_DRIVER_GPIO */
+
+#endif /* LINUX_SSB_PRIVATE_H_ */