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brcmfmac: combine bcmsdh source files into one 

The driver has four files specific to SDIO host interface handling.
This commit reduces that by merging two closely related source files.

Reviewed-by: Franky Lin <frankyl@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2013-12-12 11:58:50 +01:00 committed by John W. Linville
parent 4d5504ec54
commit e2dc9eea53
3 changed files with 521 additions and 553 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/brcm80211/brcmfmac/Makefile
View File

@ -36,7 +36,6 @@ brcmfmac-objs += \
brcmfmac-$(CONFIG_BRCMFMAC_SDIO) += \
dhd_sdio.o \
bcmsdh.o \
bcmsdh_sdmmc.o \
sdio_chip.o
brcmfmac-$(CONFIG_BRCMFMAC_USB) += \
usb.o

521
drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
View File

@ -23,9 +23,17 @@
#include <linux/completion.h>
#include <linux/scatterlist.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/core.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/platform_device.h>
#include <linux/platform_data/brcmfmac-sdio.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <net/cfg80211.h>
#include <defs.h>
#include <brcm_hw_ids.h>
@ -35,6 +43,7 @@
#include "dhd_bus.h"
#include "dhd_dbg.h"
#include "sdio_host.h"
#include "sdio_chip.h"
#define SDIOH_API_ACCESS_RETRY_LIMIT 2
@ -797,3 +806,515 @@ void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
else
brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
}
#define SDIO_VENDOR_ID_BROADCOM 0x02d0
#define DMA_ALIGN_MASK 0x03
#define SDIO_FUNC1_BLOCKSIZE 64
#define SDIO_FUNC2_BLOCKSIZE 512
/* devices we support, null terminated */
static const struct sdio_device_id brcmf_sdmmc_ids[] = {
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM,
SDIO_DEVICE_ID_BROADCOM_4335_4339)},
{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
bool
brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
{
bool is_err = false;
#ifdef CONFIG_PM_SLEEP
is_err = atomic_read(&sdiodev->suspend);
#endif
return is_err;
}
void
brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
{
#ifdef CONFIG_PM_SLEEP
int retry = 0;
while (atomic_read(&sdiodev->suspend) && retry++ != 30)
wait_event_timeout(*wq, false, HZ/100);
#endif
}
static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
uint regaddr, u8 *byte)
{
struct sdio_func *sdfunc = sdiodev->func[0];
int err_ret;
/*
* Can only directly write to some F0 registers.
* Handle F2 enable/disable and Abort command
* as a special case.
*/
if (regaddr == SDIO_CCCR_IOEx) {
sdfunc = sdiodev->func[2];
if (sdfunc) {
if (*byte & SDIO_FUNC_ENABLE_2) {
/* Enable Function 2 */
err_ret = sdio_enable_func(sdfunc);
if (err_ret)
brcmf_err("enable F2 failed:%d\n",
err_ret);
} else {
/* Disable Function 2 */
err_ret = sdio_disable_func(sdfunc);
if (err_ret)
brcmf_err("Disable F2 failed:%d\n",
err_ret);
}
} else {
err_ret = -ENOENT;
}
} else if ((regaddr == SDIO_CCCR_ABORT) ||
(regaddr == SDIO_CCCR_IENx)) {
sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
GFP_KERNEL);
if (!sdfunc)
return -ENOMEM;
sdfunc->num = 0;
sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
kfree(sdfunc);
} else if (regaddr < 0xF0) {
brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
err_ret = -EPERM;
} else {
sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
}
return err_ret;
}
int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
uint regaddr, u8 *byte)
{
int err_ret;
brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
if (brcmf_pm_resume_error(sdiodev))
return -EIO;
if (rw && func == 0) {
/* handle F0 separately */
err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
} else {
if (rw) /* CMD52 Write */
sdio_writeb(sdiodev->func[func], *byte, regaddr,
&err_ret);
else if (func == 0) {
*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
&err_ret);
} else {
*byte = sdio_readb(sdiodev->func[func], regaddr,
&err_ret);
}
}
if (err_ret) {
/*
* SleepCSR register access can fail when
* waking up the device so reduce this noise
* in the logs.
*/
if (regaddr != SBSDIO_FUNC1_SLEEPCSR)
brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
rw ? "write" : "read", func, regaddr, *byte,
err_ret);
else
brcmf_dbg(SDIO, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
rw ? "write" : "read", func, regaddr, *byte,
err_ret);
}
return err_ret;
}
int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
uint rw, uint func, uint addr, u32 *word,
uint nbytes)
{
int err_ret = -EIO;
if (func == 0) {
brcmf_err("Only CMD52 allowed to F0\n");
return -EINVAL;
}
brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
rw, func, addr, nbytes);
brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
if (brcmf_pm_resume_error(sdiodev))
return -EIO;
if (rw) { /* CMD52 Write */
if (nbytes == 4)
sdio_writel(sdiodev->func[func], *word, addr,
&err_ret);
else if (nbytes == 2)
sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
addr, &err_ret);
else
brcmf_err("Invalid nbytes: %d\n", nbytes);
} else { /* CMD52 Read */
if (nbytes == 4)
*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
else if (nbytes == 2)
*word = sdio_readw(sdiodev->func[func], addr,
&err_ret) & 0xFFFF;
else
brcmf_err("Invalid nbytes: %d\n", nbytes);
}
if (err_ret)
brcmf_err("Failed to %s word, Err: 0x%08x\n",
rw ? "write" : "read", err_ret);
return err_ret;
}
static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
{
/* read 24 bits and return valid 17 bit addr */
int i, ret;
u32 scratch, regdata;
__le32 scratch_le;
u8 *ptr = (u8 *)&scratch_le;
for (i = 0; i < 3; i++) {
regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
if (ret != 0)
brcmf_err("Can't read!\n");
*ptr++ = (u8) regdata;
regaddr++;
}
/* Only the lower 17-bits are valid */
scratch = le32_to_cpu(scratch_le);
scratch &= 0x0001FFFF;
return scratch;
}
static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
{
int err_ret;
u32 fbraddr;
u8 func;
brcmf_dbg(SDIO, "\n");
/* Get the Card's common CIS address */
sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
SDIO_CCCR_CIS);
brcmf_dbg(SDIO, "Card's Common CIS Ptr = 0x%x\n",
sdiodev->func_cis_ptr[0]);
/* Get the Card's function CIS (for each function) */
for (fbraddr = SDIO_FBR_BASE(1), func = 1;
func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
sdiodev->func_cis_ptr[func] =
brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
brcmf_dbg(SDIO, "Function %d CIS Ptr = 0x%x\n",
func, sdiodev->func_cis_ptr[func]);
}
/* Enable Function 1 */
err_ret = sdio_enable_func(sdiodev->func[1]);
if (err_ret)
brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
return false;
}
/*
* Public entry points & extern's
*/
int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
{
int err_ret = 0;
struct mmc_host *host;
struct sdio_func *func;
uint max_blocks;
brcmf_dbg(SDIO, "\n");
sdiodev->num_funcs = 2;
sdio_claim_host(sdiodev->func[1]);
err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
if (err_ret) {
brcmf_err("Failed to set F1 blocksize\n");
goto out;
}
err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
if (err_ret) {
brcmf_err("Failed to set F2 blocksize\n");
goto out;
}
brcmf_sdioh_enablefuncs(sdiodev);
/*
* determine host related variables after brcmf_sdio_probe()
* as func->cur_blksize is properly set and F2 init has been
* completed successfully.
*/
func = sdiodev->func[2];
host = func->card->host;
sdiodev->sg_support = host->max_segs > 1;
max_blocks = min_t(uint, host->max_blk_count, 511u);
sdiodev->max_request_size = min_t(uint, host->max_req_size,
max_blocks * func->cur_blksize);
sdiodev->max_segment_count = min_t(uint, host->max_segs,
SG_MAX_SINGLE_ALLOC);
sdiodev->max_segment_size = host->max_seg_size;
out:
sdio_release_host(sdiodev->func[1]);
brcmf_dbg(SDIO, "Done\n");
return err_ret;
}
void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
{
brcmf_dbg(SDIO, "\n");
/* Disable Function 2 */
sdio_claim_host(sdiodev->func[2]);
sdio_disable_func(sdiodev->func[2]);
sdio_release_host(sdiodev->func[2]);
/* Disable Function 1 */
sdio_claim_host(sdiodev->func[1]);
sdio_disable_func(sdiodev->func[1]);
sdio_release_host(sdiodev->func[1]);
}
static int brcmf_ops_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
int err;
struct brcmf_sdio_dev *sdiodev;
struct brcmf_bus *bus_if;
brcmf_dbg(SDIO, "Enter\n");
brcmf_dbg(SDIO, "Class=%x\n", func->class);
brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
brcmf_dbg(SDIO, "Function#: %d\n", func->num);
/* Consume func num 1 but dont do anything with it. */
if (func->num == 1)
return 0;
/* Ignore anything but func 2 */
if (func->num != 2)
return -ENODEV;
bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
if (!bus_if)
return -ENOMEM;
sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
if (!sdiodev) {
kfree(bus_if);
return -ENOMEM;
}
sdiodev->func[0] = func->card->sdio_func[0];
sdiodev->func[1] = func->card->sdio_func[0];
sdiodev->func[2] = func;
sdiodev->bus_if = bus_if;
bus_if->bus_priv.sdio = sdiodev;
dev_set_drvdata(&func->dev, bus_if);
dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
sdiodev->dev = &sdiodev->func[1]->dev;
sdiodev->pdata = brcmfmac_sdio_pdata;
atomic_set(&sdiodev->suspend, false);
init_waitqueue_head(&sdiodev->request_byte_wait);
init_waitqueue_head(&sdiodev->request_word_wait);
init_waitqueue_head(&sdiodev->request_buffer_wait);
brcmf_dbg(SDIO, "F2 found, calling brcmf_sdio_probe...\n");
err = brcmf_sdio_probe(sdiodev);
if (err) {
brcmf_err("F2 error, probe failed %d...\n", err);
goto fail;
}
brcmf_dbg(SDIO, "F2 init completed...\n");
return 0;
fail:
dev_set_drvdata(&func->dev, NULL);
dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
kfree(sdiodev);
kfree(bus_if);
return err;
}
static void brcmf_ops_sdio_remove(struct sdio_func *func)
{
struct brcmf_bus *bus_if;
struct brcmf_sdio_dev *sdiodev;
brcmf_dbg(SDIO, "Enter\n");
brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
brcmf_dbg(SDIO, "Function: %d\n", func->num);
if (func->num != 1 && func->num != 2)
return;
bus_if = dev_get_drvdata(&func->dev);
if (bus_if) {
sdiodev = bus_if->bus_priv.sdio;
brcmf_sdio_remove(sdiodev);
dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
kfree(bus_if);
kfree(sdiodev);
}
brcmf_dbg(SDIO, "Exit\n");
}
#ifdef CONFIG_PM_SLEEP
static int brcmf_sdio_suspend(struct device *dev)
{
mmc_pm_flag_t sdio_flags;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
int ret = 0;
brcmf_dbg(SDIO, "\n");
atomic_set(&sdiodev->suspend, true);
sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
brcmf_err("Host can't keep power while suspended\n");
return -EINVAL;
}
ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
if (ret) {
brcmf_err("Failed to set pm_flags\n");
return ret;
}
brcmf_sdio_wdtmr_enable(sdiodev, false);
return ret;
}
static int brcmf_sdio_resume(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
brcmf_sdio_wdtmr_enable(sdiodev, true);
atomic_set(&sdiodev->suspend, false);
return 0;
}
static const struct dev_pm_ops brcmf_sdio_pm_ops = {
.suspend = brcmf_sdio_suspend,
.resume = brcmf_sdio_resume,
};
#endif /* CONFIG_PM_SLEEP */
static struct sdio_driver brcmf_sdmmc_driver = {
.probe = brcmf_ops_sdio_probe,
.remove = brcmf_ops_sdio_remove,
.name = BRCMFMAC_SDIO_PDATA_NAME,
.id_table = brcmf_sdmmc_ids,
#ifdef CONFIG_PM_SLEEP
.drv = {
.pm = &brcmf_sdio_pm_ops,
},
#endif /* CONFIG_PM_SLEEP */
};
static int brcmf_sdio_pd_probe(struct platform_device *pdev)
{
brcmf_dbg(SDIO, "Enter\n");
brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
if (brcmfmac_sdio_pdata->power_on)
brcmfmac_sdio_pdata->power_on();
return 0;
}
static int brcmf_sdio_pd_remove(struct platform_device *pdev)
{
brcmf_dbg(SDIO, "Enter\n");
if (brcmfmac_sdio_pdata->power_off)
brcmfmac_sdio_pdata->power_off();
sdio_unregister_driver(&brcmf_sdmmc_driver);
return 0;
}
static struct platform_driver brcmf_sdio_pd = {
.remove = brcmf_sdio_pd_remove,
.driver = {
.name = BRCMFMAC_SDIO_PDATA_NAME,
.owner = THIS_MODULE,
}
};
void brcmf_sdio_register(void)
{
int ret;
ret = sdio_register_driver(&brcmf_sdmmc_driver);
if (ret)
brcmf_err("sdio_register_driver failed: %d\n", ret);
}
void brcmf_sdio_exit(void)
{
brcmf_dbg(SDIO, "Enter\n");
if (brcmfmac_sdio_pdata)
platform_driver_unregister(&brcmf_sdio_pd);
else
sdio_unregister_driver(&brcmf_sdmmc_driver);
}
void __init brcmf_sdio_init(void)
{
int ret;
brcmf_dbg(SDIO, "Enter\n");
ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
if (ret == -ENODEV)
brcmf_dbg(SDIO, "No platform data available.\n");
}

552
drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c
View File

@ -1,552 +0,0 @@
/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/core.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/sched.h> /* request_irq() */
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/platform_data/brcmfmac-sdio.h>
#include <net/cfg80211.h>
#include <defs.h>
#include <brcm_hw_ids.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "sdio_host.h"
#include "sdio_chip.h"
#include "dhd_dbg.h"
#include "dhd_bus.h"
#define SDIO_VENDOR_ID_BROADCOM 0x02d0
#define DMA_ALIGN_MASK 0x03
#define SDIO_FUNC1_BLOCKSIZE 64
#define SDIO_FUNC2_BLOCKSIZE 512
/* devices we support, null terminated */
static const struct sdio_device_id brcmf_sdmmc_ids[] = {
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
{SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM,
SDIO_DEVICE_ID_BROADCOM_4335_4339)},
{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
bool
brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
{
bool is_err = false;
#ifdef CONFIG_PM_SLEEP
is_err = atomic_read(&sdiodev->suspend);
#endif
return is_err;
}
void
brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
{
#ifdef CONFIG_PM_SLEEP
int retry = 0;
while (atomic_read(&sdiodev->suspend) && retry++ != 30)
wait_event_timeout(*wq, false, HZ/100);
#endif
}
static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
uint regaddr, u8 *byte)
{
struct sdio_func *sdfunc = sdiodev->func[0];
int err_ret;
/*
* Can only directly write to some F0 registers.
* Handle F2 enable/disable and Abort command
* as a special case.
*/
if (regaddr == SDIO_CCCR_IOEx) {
sdfunc = sdiodev->func[2];
if (sdfunc) {
if (*byte & SDIO_FUNC_ENABLE_2) {
/* Enable Function 2 */
err_ret = sdio_enable_func(sdfunc);
if (err_ret)
brcmf_err("enable F2 failed:%d\n",
err_ret);
} else {
/* Disable Function 2 */
err_ret = sdio_disable_func(sdfunc);
if (err_ret)
brcmf_err("Disable F2 failed:%d\n",
err_ret);
}
} else {
err_ret = -ENOENT;
}
} else if ((regaddr == SDIO_CCCR_ABORT) ||
(regaddr == SDIO_CCCR_IENx)) {
sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
GFP_KERNEL);
if (!sdfunc)
return -ENOMEM;
sdfunc->num = 0;
sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
kfree(sdfunc);
} else if (regaddr < 0xF0) {
brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
err_ret = -EPERM;
} else {
sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
}
return err_ret;
}
int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
uint regaddr, u8 *byte)
{
int err_ret;
brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
if (brcmf_pm_resume_error(sdiodev))
return -EIO;
if (rw && func == 0) {
/* handle F0 separately */
err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
} else {
if (rw) /* CMD52 Write */
sdio_writeb(sdiodev->func[func], *byte, regaddr,
&err_ret);
else if (func == 0) {
*byte = sdio_f0_readb(sdiodev->func[func], regaddr,
&err_ret);
} else {
*byte = sdio_readb(sdiodev->func[func], regaddr,
&err_ret);
}
}
if (err_ret) {
/*
* SleepCSR register access can fail when
* waking up the device so reduce this noise
* in the logs.
*/
if (regaddr != SBSDIO_FUNC1_SLEEPCSR)
brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
rw ? "write" : "read", func, regaddr, *byte,
err_ret);
else
brcmf_dbg(SDIO, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
rw ? "write" : "read", func, regaddr, *byte,
err_ret);
}
return err_ret;
}
int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
uint rw, uint func, uint addr, u32 *word,
uint nbytes)
{
int err_ret = -EIO;
if (func == 0) {
brcmf_err("Only CMD52 allowed to F0\n");
return -EINVAL;
}
brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
rw, func, addr, nbytes);
brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
if (brcmf_pm_resume_error(sdiodev))
return -EIO;
if (rw) { /* CMD52 Write */
if (nbytes == 4)
sdio_writel(sdiodev->func[func], *word, addr,
&err_ret);
else if (nbytes == 2)
sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
addr, &err_ret);
else
brcmf_err("Invalid nbytes: %d\n", nbytes);
} else { /* CMD52 Read */
if (nbytes == 4)
*word = sdio_readl(sdiodev->func[func], addr, &err_ret);
else if (nbytes == 2)
*word = sdio_readw(sdiodev->func[func], addr,
&err_ret) & 0xFFFF;
else
brcmf_err("Invalid nbytes: %d\n", nbytes);
}
if (err_ret)
brcmf_err("Failed to %s word, Err: 0x%08x\n",
rw ? "write" : "read", err_ret);
return err_ret;
}
static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
{
/* read 24 bits and return valid 17 bit addr */
int i, ret;
u32 scratch, regdata;
__le32 scratch_le;
u8 *ptr = (u8 *)&scratch_le;
for (i = 0; i < 3; i++) {
regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
if (ret != 0)
brcmf_err("Can't read!\n");
*ptr++ = (u8) regdata;
regaddr++;
}
/* Only the lower 17-bits are valid */
scratch = le32_to_cpu(scratch_le);
scratch &= 0x0001FFFF;
return scratch;
}
static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
{
int err_ret;
u32 fbraddr;
u8 func;
brcmf_dbg(SDIO, "\n");
/* Get the Card's common CIS address */
sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
SDIO_CCCR_CIS);
brcmf_dbg(SDIO, "Card's Common CIS Ptr = 0x%x\n",
sdiodev->func_cis_ptr[0]);
/* Get the Card's function CIS (for each function) */
for (fbraddr = SDIO_FBR_BASE(1), func = 1;
func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
sdiodev->func_cis_ptr[func] =
brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
brcmf_dbg(SDIO, "Function %d CIS Ptr = 0x%x\n",
func, sdiodev->func_cis_ptr[func]);
}
/* Enable Function 1 */
err_ret = sdio_enable_func(sdiodev->func[1]);
if (err_ret)
brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
return false;
}
/*
* Public entry points & extern's
*/
int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
{
int err_ret = 0;
struct mmc_host *host;
struct sdio_func *func;
uint max_blocks;
brcmf_dbg(SDIO, "\n");
sdiodev->num_funcs = 2;
sdio_claim_host(sdiodev->func[1]);
err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
if (err_ret) {
brcmf_err("Failed to set F1 blocksize\n");
goto out;
}
err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
if (err_ret) {
brcmf_err("Failed to set F2 blocksize\n");
goto out;
}
brcmf_sdioh_enablefuncs(sdiodev);
/*
* determine host related variables after brcmf_sdio_probe()
* as func->cur_blksize is properly set and F2 init has been
* completed successfully.
*/
func = sdiodev->func[2];
host = func->card->host;
sdiodev->sg_support = host->max_segs > 1;
max_blocks = min_t(uint, host->max_blk_count, 511u);
sdiodev->max_request_size = min_t(uint, host->max_req_size,
max_blocks * func->cur_blksize);
sdiodev->max_segment_count = min_t(uint, host->max_segs,
SG_MAX_SINGLE_ALLOC);
sdiodev->max_segment_size = host->max_seg_size;
out:
sdio_release_host(sdiodev->func[1]);
brcmf_dbg(SDIO, "Done\n");
return err_ret;
}
void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
{
brcmf_dbg(SDIO, "\n");
/* Disable Function 2 */
sdio_claim_host(sdiodev->func[2]);
sdio_disable_func(sdiodev->func[2]);
sdio_release_host(sdiodev->func[2]);
/* Disable Function 1 */
sdio_claim_host(sdiodev->func[1]);
sdio_disable_func(sdiodev->func[1]);
sdio_release_host(sdiodev->func[1]);
}
static int brcmf_ops_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
int err;
struct brcmf_sdio_dev *sdiodev;
struct brcmf_bus *bus_if;
brcmf_dbg(SDIO, "Enter\n");
brcmf_dbg(SDIO, "Class=%x\n", func->class);
brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
brcmf_dbg(SDIO, "Function#: %d\n", func->num);
/* Consume func num 1 but dont do anything with it. */
if (func->num == 1)
return 0;
/* Ignore anything but func 2 */
if (func->num != 2)
return -ENODEV;
bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
if (!bus_if)
return -ENOMEM;
sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
if (!sdiodev) {
kfree(bus_if);
return -ENOMEM;
}
sdiodev->func[0] = func->card->sdio_func[0];
sdiodev->func[1] = func->card->sdio_func[0];
sdiodev->func[2] = func;
sdiodev->bus_if = bus_if;
bus_if->bus_priv.sdio = sdiodev;
dev_set_drvdata(&func->dev, bus_if);
dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
sdiodev->dev = &sdiodev->func[1]->dev;
sdiodev->pdata = brcmfmac_sdio_pdata;
atomic_set(&sdiodev->suspend, false);
init_waitqueue_head(&sdiodev->request_byte_wait);
init_waitqueue_head(&sdiodev->request_word_wait);
init_waitqueue_head(&sdiodev->request_buffer_wait);
brcmf_dbg(SDIO, "F2 found, calling brcmf_sdio_probe...\n");
err = brcmf_sdio_probe(sdiodev);
if (err) {
brcmf_err("F2 error, probe failed %d...\n", err);
goto fail;
}
brcmf_dbg(SDIO, "F2 init completed...\n");
return 0;
fail:
dev_set_drvdata(&func->dev, NULL);
dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
kfree(sdiodev);
kfree(bus_if);
return err;
}
static void brcmf_ops_sdio_remove(struct sdio_func *func)
{
struct brcmf_bus *bus_if;
struct brcmf_sdio_dev *sdiodev;
brcmf_dbg(SDIO, "Enter\n");
brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
brcmf_dbg(SDIO, "Function: %d\n", func->num);
if (func->num != 1 && func->num != 2)
return;
bus_if = dev_get_drvdata(&func->dev);
if (bus_if) {
sdiodev = bus_if->bus_priv.sdio;
brcmf_sdio_remove(sdiodev);
dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
kfree(bus_if);
kfree(sdiodev);
}
brcmf_dbg(SDIO, "Exit\n");
}
#ifdef CONFIG_PM_SLEEP
static int brcmf_sdio_suspend(struct device *dev)
{
mmc_pm_flag_t sdio_flags;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
int ret = 0;
brcmf_dbg(SDIO, "\n");
atomic_set(&sdiodev->suspend, true);
sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
brcmf_err("Host can't keep power while suspended\n");
return -EINVAL;
}
ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
if (ret) {
brcmf_err("Failed to set pm_flags\n");
return ret;
}
brcmf_sdio_wdtmr_enable(sdiodev, false);
return ret;
}
static int brcmf_sdio_resume(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
brcmf_sdio_wdtmr_enable(sdiodev, true);
atomic_set(&sdiodev->suspend, false);
return 0;
}
static const struct dev_pm_ops brcmf_sdio_pm_ops = {
.suspend = brcmf_sdio_suspend,
.resume = brcmf_sdio_resume,
};
#endif /* CONFIG_PM_SLEEP */
static struct sdio_driver brcmf_sdmmc_driver = {
.probe = brcmf_ops_sdio_probe,
.remove = brcmf_ops_sdio_remove,
.name = BRCMFMAC_SDIO_PDATA_NAME,
.id_table = brcmf_sdmmc_ids,
#ifdef CONFIG_PM_SLEEP
.drv = {
.pm = &brcmf_sdio_pm_ops,
},
#endif /* CONFIG_PM_SLEEP */
};
static int brcmf_sdio_pd_probe(struct platform_device *pdev)
{
brcmf_dbg(SDIO, "Enter\n");
brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
if (brcmfmac_sdio_pdata->power_on)
brcmfmac_sdio_pdata->power_on();
return 0;
}
static int brcmf_sdio_pd_remove(struct platform_device *pdev)
{
brcmf_dbg(SDIO, "Enter\n");
if (brcmfmac_sdio_pdata->power_off)
brcmfmac_sdio_pdata->power_off();
sdio_unregister_driver(&brcmf_sdmmc_driver);
return 0;
}
static struct platform_driver brcmf_sdio_pd = {
.remove = brcmf_sdio_pd_remove,
.driver = {
.name = BRCMFMAC_SDIO_PDATA_NAME,
.owner = THIS_MODULE,
}
};
void brcmf_sdio_register(void)
{
int ret;
ret = sdio_register_driver(&brcmf_sdmmc_driver);
if (ret)
brcmf_err("sdio_register_driver failed: %d\n", ret);
}
void brcmf_sdio_exit(void)
{
brcmf_dbg(SDIO, "Enter\n");
if (brcmfmac_sdio_pdata)
platform_driver_unregister(&brcmf_sdio_pd);
else
sdio_unregister_driver(&brcmf_sdmmc_driver);
}
void __init brcmf_sdio_init(void)
{
int ret;
brcmf_dbg(SDIO, "Enter\n");
ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
if (ret == -ENODEV)
brcmf_dbg(SDIO, "No platform data available.\n");
}