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Commit e7ec2e32 authored by Michael Buesch's avatar Michael Buesch Committed by John W. Linville
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ssb: Add SPROM/invariants support for PCMCIA devices 



This adds support for reading/writing the SPROM invariants
for PCMCIA based devices.

Signed-off-by: default avatarMichael Buesch <mb@bu3sch.de>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 068edceb

drivers/ssb/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -20,6 +20,10 @@ config SSB 


	  If unsure, say N.



# Common SPROM support routines

config SSB_SPROM

	bool



config SSB_PCIHOST_POSSIBLE

	bool

	depends on SSB && (PCI = y || PCI = SSB)
@@ -28,6 +32,7 @@ config SSB_PCIHOST_POSSIBLE 
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
@@ -48,6 +53,7 @@ config SSB_PCMCIAHOST_POSSIBLE 
config SSB_PCMCIAHOST

	bool "Support for SSB on PCMCIA-bus host (EXPERIMENTAL)"

	depends on SSB_PCMCIAHOST_POSSIBLE

	select SSB_SPROM

	help

	  Support for a Sonics Silicon Backplane on top

	  of a PCMCIA device.

drivers/ssb/Makefile

+1 −0
Original line number Diff line number Diff line 
# 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

drivers/ssb/main.c

+21 −2
Original line number Diff line number Diff line
@@ -69,6 +69,25 @@ struct ssb_bus *ssb_pci_dev_to_bus(struct pci_dev *pdev) 
}

#endif /* CONFIG_SSB_PCIHOST */



#ifdef CONFIG_SSB_PCMCIAHOST

struct ssb_bus *ssb_pcmcia_dev_to_bus(struct pcmcia_device *pdev)

{

	struct ssb_bus *bus;



	ssb_buses_lock();

	list_for_each_entry(bus, &buses, list) {

		if (bus->bustype == SSB_BUSTYPE_PCMCIA &&

		    bus->host_pcmcia == pdev)

			goto found;

	}

	bus = NULL;

found:

	ssb_buses_unlock();



	return bus;

}

#endif /* CONFIG_SSB_PCMCIAHOST */



int ssb_for_each_bus_call(unsigned long data,

			  int (*func)(struct ssb_bus *bus, unsigned long data))

{
@@ -398,7 +417,7 @@ void ssb_bus_unregister(struct ssb_bus *bus) 
	list_del(&bus->list);

	ssb_buses_unlock();



	/* ssb_pcmcia_exit(bus); */

	ssb_pcmcia_exit(bus);

	ssb_pci_exit(bus);

	ssb_iounmap(bus);

}
@@ -663,7 +682,7 @@ static int ssb_bus_register(struct ssb_bus *bus, 
err_dequeue:

	list_del(&bus->list);

err_pcmcia_exit:

/*	ssb_pcmcia_exit(bus); */

	ssb_pcmcia_exit(bus);

err_pci_exit:

	ssb_pci_exit(bus);

err_unmap:

drivers/ssb/pci.c

+10 −103
Original line number Diff line number Diff line
@@ -227,7 +227,7 @@ static u8 ssb_sprom_crc(const u16 *sprom, u16 size) 
	return crc;

}



static int sprom_check_crc(const u16 *sprom, u16 size)

static int sprom_check_crc(const u16 *sprom, size_t size)

{

	u8 crc;

	u8 expected_crc;
@@ -242,12 +242,14 @@ static int sprom_check_crc(const u16 *sprom, u16 size) 
	return 0;

}



static void sprom_do_read(struct ssb_bus *bus, u16 *sprom)

static int sprom_do_read(struct ssb_bus *bus, u16 *sprom)

{

	int i;



	for (i = 0; i < bus->sprom_size; i++)

		sprom[i] = ioread16(bus->mmio + SSB_SPROM_BASE + (i * 2));



	return 0;

}



static int sprom_do_write(struct ssb_bus *bus, const u16 *sprom)
@@ -660,71 +662,18 @@ const struct ssb_bus_ops ssb_pci_ops = { 
	.write32	= ssb_pci_write32,

};



static int sprom2hex(const u16 *sprom, char *buf, size_t buf_len, u16 size)

{

	int i, pos = 0;



	for (i = 0; i < size; i++)

		pos += snprintf(buf + pos, buf_len - pos - 1,

				"%04X", swab16(sprom[i]) & 0xFFFF);

	pos += snprintf(buf + pos, buf_len - pos - 1, "\n");



	return pos + 1;

}



static int hex2sprom(u16 *sprom, const char *dump, size_t len, u16 size)

{

	char tmp[5] = { 0 };

	int cnt = 0;

	unsigned long parsed;



	if (len < size * 2)

		return -EINVAL;



	while (cnt < size) {

		memcpy(tmp, dump, 4);

		dump += 4;

		parsed = simple_strtoul(tmp, NULL, 16);

		sprom[cnt++] = swab16((u16)parsed);

	}



	return 0;

}



static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev,

				       struct device_attribute *attr,

				       char *buf)

{

	struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);

	struct ssb_bus *bus;

	u16 *sprom;

	int err = -ENODEV;

	ssize_t count = 0;



	bus = ssb_pci_dev_to_bus(pdev);

	if (!bus)

		goto out;

	err = -ENOMEM;

	sprom = kcalloc(bus->sprom_size, 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->pci_sprom_mutex))

		goto out_kfree;

	sprom_do_read(bus, sprom);

	mutex_unlock(&bus->pci_sprom_mutex);



	count = sprom2hex(sprom, buf, PAGE_SIZE, bus->sprom_size);

	err = 0;

		return -ENODEV;



out_kfree:

	kfree(sprom);

out:

	return err ? err : count;

	return ssb_attr_sprom_show(bus, buf, sprom_do_read);

}



static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev,
@@ -733,55 +682,13 @@ static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev, 
{

	struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);

	struct ssb_bus *bus;

	u16 *sprom;

	int res = 0, err = -ENODEV;



	bus = ssb_pci_dev_to_bus(pdev);

	if (!bus)

		goto out;

	err = -ENOMEM;

	sprom = kcalloc(bus->sprom_size, sizeof(u16), GFP_KERNEL);

	if (!sprom)

		goto out;

	err = hex2sprom(sprom, buf, count, bus->sprom_size);

	if (err) {

		err = -EINVAL;

		goto out_kfree;

	}

	err = sprom_check_crc(sprom, bus->sprom_size);

	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->pci_sprom_mutex))

		goto out_kfree;

	err = ssb_devices_freeze(bus);

	if (err == -EOPNOTSUPP) {

		ssb_printk(KERN_ERR PFX "SPROM write: Could not freeze devices. "

			   "No suspend support. Is CONFIG_PM enabled?\n");

		goto out_unlock;

	}

	if (err) {

		ssb_printk(KERN_ERR PFX "SPROM write: Could not freeze all devices\n");

		goto out_unlock;

	}

	res = sprom_do_write(bus, sprom);

	err = ssb_devices_thaw(bus);

	if (err)

		ssb_printk(KERN_ERR PFX "SPROM write: Could not thaw all devices\n");

out_unlock:

	mutex_unlock(&bus->pci_sprom_mutex);

out_kfree:

	kfree(sprom);

out:

	if (res)

		return res;

	return err ? err : count;

		return -ENODEV;



	return ssb_attr_sprom_store(bus, buf, count,

				    sprom_check_crc, sprom_do_write);

}



static DEVICE_ATTR(ssb_sprom, 0600,
@@ -808,7 +715,7 @@ int ssb_pci_init(struct ssb_bus *bus) 
		return 0;



	pdev = bus->host_pci;

	mutex_init(&bus->pci_sprom_mutex);

	mutex_init(&bus->sprom_mutex);

	err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom);

	if (err)

		goto out;

drivers/ssb/pcmcia.c

+458 −60
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
 * PCMCIA-Hostbus related functions

 *

 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>

 * Copyright 2007 Michael Buesch <mb@bu3sch.de>

 * Copyright 2007-2008 Michael Buesch <mb@bu3sch.de>

 *

 * Licensed under the GNU/GPL. See COPYING for details.

 */
@@ -11,6 +11,7 @@ 
#include <linux/ssb/ssb.h>

#include <linux/delay.h>

#include <linux/io.h>

#include <linux/etherdevice.h>



#include <pcmcia/cs_types.h>

#include <pcmcia/cs.h>
@@ -26,59 +27,132 @@ 
#define SSB_VERBOSE_PCMCIACORESWITCH_DEBUG		0





/* PCMCIA configuration registers */

#define SSB_PCMCIA_CORECTL		0x00

#define  SSB_PCMCIA_CORECTL_RESET	0x80 /* Core reset */

#define  SSB_PCMCIA_CORECTL_IRQEN	0x04 /* IRQ enable */

#define  SSB_PCMCIA_CORECTL_FUNCEN	0x01 /* Function enable */

#define SSB_PCMCIA_CORECTL2		0x80

#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)

{

	conf_reg_t reg;

	int res;



	memset(&reg, 0, sizeof(reg));

	reg.Offset = offset;

	reg.Action = CS_WRITE;

	reg.Value = value;

	res = pcmcia_access_configuration_register(bus->host_pcmcia, &reg);

	if (unlikely(res != CS_SUCCESS))

		return -EBUSY;



	return 0;

}



/* Read from a PCMCIA configuration register. */

static int ssb_pcmcia_cfg_read(struct ssb_bus *bus, u8 offset, u8 *value)

{

	conf_reg_t reg;

	int res;



	memset(&reg, 0, sizeof(reg));

	reg.Offset = offset;

	reg.Action = CS_READ;

	res = pcmcia_access_configuration_register(bus->host_pcmcia, &reg);

	if (unlikely(res != CS_SUCCESS))

		return -EBUSY;

	*value = reg.Value;



	return 0;

}



int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus,

			      u8 coreidx)

{

	struct pcmcia_device *pdev = bus->host_pcmcia;

	int err;

	int attempts = 0;

	u32 cur_core;

	conf_reg_t reg;

	u32 addr;

	u32 read_addr;

	u8 val;



	addr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;

	while (1) {

		reg.Action = CS_WRITE;

		reg.Offset = 0x2E;

		reg.Value = (addr & 0x0000F000) >> 12;

		err = pcmcia_access_configuration_register(pdev, &reg);

		if (err != CS_SUCCESS)

		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS0,

					   (addr & 0x0000F000) >> 12);

		if (err)

			goto error;

		reg.Offset = 0x30;

		reg.Value = (addr & 0x00FF0000) >> 16;

		err = pcmcia_access_configuration_register(pdev, &reg);

		if (err != CS_SUCCESS)

		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS1,

					   (addr & 0x00FF0000) >> 16);

		if (err)

			goto error;

		reg.Offset = 0x32;

		reg.Value = (addr & 0xFF000000) >> 24;

		err = pcmcia_access_configuration_register(pdev, &reg);

		if (err != CS_SUCCESS)

		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS2,

					   (addr & 0xFF000000) >> 24);

		if (err)

			goto error;



		read_addr = 0;



		reg.Action = CS_READ;

		reg.Offset = 0x2E;

		err = pcmcia_access_configuration_register(pdev, &reg);

		if (err != CS_SUCCESS)

		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS0, &val);

		if (err)

			goto error;

		read_addr |= ((u32)(reg.Value & 0x0F)) << 12;

		reg.Offset = 0x30;

		err = pcmcia_access_configuration_register(pdev, &reg);

		if (err != CS_SUCCESS)

		read_addr |= ((u32)(val & 0x0F)) << 12;

		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS1, &val);

		if (err)

			goto error;

		read_addr |= ((u32)reg.Value) << 16;

		reg.Offset = 0x32;

		err = pcmcia_access_configuration_register(pdev, &reg);

		if (err != CS_SUCCESS)

		read_addr |= ((u32)val) << 16;

		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS2, &val);

		if (err)

			goto error;

		read_addr |= ((u32)reg.Value) << 24;

		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);
@@ -87,7 +161,7 @@ int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus, 
	return 0;

error:

	ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx);

	return -ENODEV;

	return err;

}



int ssb_pcmcia_switch_core(struct ssb_bus *bus,
@@ -112,27 +186,21 @@ int ssb_pcmcia_switch_core(struct ssb_bus *bus, 
int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg)

{

	int attempts = 0;

	conf_reg_t reg;

	int res;

	int err;

	u8 val;



	SSB_WARN_ON((seg != 0) && (seg != 1));

	reg.Offset = 0x34;

	reg.Function = 0;

	while (1) {

		reg.Action = CS_WRITE;

		reg.Value = seg;

		res = pcmcia_access_configuration_register(bus->host_pcmcia, &reg);

		if (unlikely(res != CS_SUCCESS))

		err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_MEMSEG, seg);

		if (err)

			goto error;

		reg.Value = 0xFF;

		reg.Action = CS_READ;

		res = pcmcia_access_configuration_register(bus->host_pcmcia, &reg);

		if (unlikely(res != CS_SUCCESS))

		err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_MEMSEG, &val);

		if (err)

			goto error;



		if (reg.Value == seg)

		if (val == seg)

			break;



		err = -ETIMEDOUT;

		if (unlikely(attempts++ > SSB_BAR0_MAX_RETRIES))

			goto error;

		udelay(10);
@@ -142,7 +210,7 @@ int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg) 
	return 0;

error:

	ssb_printk(KERN_ERR PFX "Failed to switch pcmcia segment\n");

	return -ENODEV;

	return err;

}



static int select_core_and_segment(struct ssb_device *dev,
@@ -276,18 +344,344 @@ const struct ssb_bus_ops ssb_pcmcia_ops = { 
	.write32	= ssb_pcmcia_write32,

};



#include <linux/etherdevice.h>

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;



	ssb_printk(KERN_NOTICE PFX

		   "Writing SPROM. Do NOT turn off the power! "

		   "Please stand by...\n");

	err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEEN);

	if (err) {

		ssb_printk(KERN_NOTICE PFX

			   "Could not enable SPROM write access.\n");

		return -EBUSY;

	}

	ssb_printk(KERN_NOTICE PFX "[ 0%%");

	msleep(500);

	for (i = 0; i < size; i++) {

		if (i == size / 4)

			ssb_printk("25%%");

		else if (i == size / 2)

			ssb_printk("50%%");

		else if (i == (size * 3) / 4)

			ssb_printk("75%%");

		else if (i % 2)

			ssb_printk(".");

		err = ssb_pcmcia_sprom_write(bus, i, sprom[i]);

		if (err) {

			ssb_printk("\n" KERN_NOTICE PFX

				   "Failed to write to SPROM.\n");

			failed = 1;

			break;

		}

	}

	err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEDIS);

	if (err) {

		ssb_printk("\n" KERN_NOTICE PFX

			   "Could not disable SPROM write access.\n");

		failed = 1;

	}

	msleep(500);

	if (!failed) {

		ssb_printk("100%% ]\n");

		ssb_printk(KERN_NOTICE PFX "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)



int ssb_pcmcia_get_invariants(struct ssb_bus *bus,

			      struct ssb_init_invariants *iv)

{

	//TODO

	random_ether_addr(iv->sprom.il0mac);

	tuple_t tuple;

	int res;

	unsigned char buf[32];

	struct ssb_sprom *sprom = &iv->sprom;

	struct ssb_boardinfo *bi = &iv->boardinfo;

	const char *error_description;



	memset(sprom, 0xFF, sizeof(*sprom));

	sprom->revision = 1;

	sprom->boardflags_lo = 0;

	sprom->boardflags_hi = 0;



	/* First fetch the MAC address. */

	memset(&tuple, 0, sizeof(tuple));

	tuple.DesiredTuple = CISTPL_FUNCE;

	tuple.TupleData = buf;

	tuple.TupleDataMax = sizeof(buf);

	res = pcmcia_get_first_tuple(bus->host_pcmcia, &tuple);

	GOTO_ERROR_ON(res != CS_SUCCESS, "MAC first tpl");

	res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);

	GOTO_ERROR_ON(res != CS_SUCCESS, "MAC first tpl data");

	while (1) {

		GOTO_ERROR_ON(tuple.TupleDataLen < 1, "MAC tpl < 1");

		if (tuple.TupleData[0] == CISTPL_FUNCE_LAN_NODE_ID)

			break;

		res = pcmcia_get_next_tuple(bus->host_pcmcia, &tuple);

		GOTO_ERROR_ON(res != CS_SUCCESS, "MAC next tpl");

		res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);

		GOTO_ERROR_ON(res != CS_SUCCESS, "MAC next tpl data");

	}

	GOTO_ERROR_ON(tuple.TupleDataLen != ETH_ALEN + 2, "MAC tpl size");

	memcpy(sprom->il0mac, &tuple.TupleData[2], ETH_ALEN);



	/* Fetch the vendor specific tuples. */

	memset(&tuple, 0, sizeof(tuple));

	tuple.DesiredTuple = SSB_PCMCIA_CIS;

	tuple.TupleData = buf;

	tuple.TupleDataMax = sizeof(buf);

	res = pcmcia_get_first_tuple(bus->host_pcmcia, &tuple);

	GOTO_ERROR_ON(res != CS_SUCCESS, "VEN first tpl");

	res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);

	GOTO_ERROR_ON(res != CS_SUCCESS, "VEN first tpl data");

	while (1) {

		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,

				      "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.ghz24.a0 = tuple.TupleData[1];

			sprom->antenna_gain.ghz24.a1 = tuple.TupleData[1];

			sprom->antenna_gain.ghz24.a2 = tuple.TupleData[1];

			sprom->antenna_gain.ghz24.a3 = tuple.TupleData[1];

			sprom->antenna_gain.ghz5.a0 = tuple.TupleData[1];

			sprom->antenna_gain.ghz5.a1 = tuple.TupleData[1];

			sprom->antenna_gain.ghz5.a2 = tuple.TupleData[1];

			sprom->antenna_gain.ghz5.a3 = tuple.TupleData[1];

			break;

		case SSB_PCMCIA_CIS_BFLAGS:

			GOTO_ERROR_ON(tuple.TupleDataLen != 3,

				      "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;

		}

		res = pcmcia_get_next_tuple(bus->host_pcmcia, &tuple);

		if (res == CS_NO_MORE_ITEMS)

			break;

		GOTO_ERROR_ON(res != CS_SUCCESS, "VEN next tpl");

		res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);

		GOTO_ERROR_ON(res != CS_SUCCESS, "VEN next tpl data");

	}



	return 0;

error:

	ssb_printk(KERN_ERR PFX

		   "PCMCIA: Failed to fetch device invariants: %s\n",

		   error_description);

	return -ENODEV;

}



static ssize_t ssb_pcmcia_attr_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_pcmcia_attr_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(ssb_sprom, 0600,

		   ssb_pcmcia_attr_sprom_show,

		   ssb_pcmcia_attr_sprom_store);



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)

{

	conf_reg_t reg;

	u8 val, offset;

	int err;



	if (bus->bustype != SSB_BUSTYPE_PCMCIA)
@@ -298,22 +692,26 @@ int ssb_pcmcia_init(struct ssb_bus *bus) 
	ssb_pcmcia_switch_segment(bus, 0);



	/* Init IRQ routing */

	reg.Action = CS_READ;

	reg.Function = 0;

	if (bus->chip_id == 0x4306)

		reg.Offset = 0x00;

		offset = SSB_PCMCIA_CORECTL;

	else

		reg.Offset = 0x80;

	err = pcmcia_access_configuration_register(bus->host_pcmcia, &reg);

	if (err != CS_SUCCESS)

		offset = SSB_PCMCIA_CORECTL2;

	err = ssb_pcmcia_cfg_read(bus, offset, &val);

	if (err)

		goto error;

	reg.Action = CS_WRITE;

	reg.Value |= 0x04 | 0x01;

	err = pcmcia_access_configuration_register(bus->host_pcmcia, &reg);

	if (err != CS_SUCCESS)

	val |= SSB_PCMCIA_CORECTL_IRQEN | SSB_PCMCIA_CORECTL_FUNCEN;

	err = ssb_pcmcia_cfg_write(bus, offset, val);

	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:

	return -ENODEV;

	ssb_printk(KERN_ERR PFX "Failed to initialize PCMCIA host device\n");

	return err;

}