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* 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.
*/
/* ****************** SDIO CARD Interface Functions **************************/
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/sched.h>
#include <linux/completion.h>
#include <defs.h>
#include <brcm_hw_ids.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include <soc.h>
#include "dhd.h"
#include "dhd_bus.h"
#include "sdio_host.h"
#define SDIOH_API_ACCESS_RETRY_LIMIT 2
#define BRCMF_SD_ERROR_VAL 0x0001 /* Error */
#define BRCMF_SD_INFO_VAL 0x0002 /* Info */
#ifdef BCMDBG
#define BRCMF_SD_ERROR(x) \
do { \
if ((brcmf_sdio_msglevel & BRCMF_SD_ERROR_VAL) && \
net_ratelimit()) \
printk x; \
} while (0)
#define BRCMF_SD_INFO(x) \
do { \
if ((brcmf_sdio_msglevel & BRCMF_SD_INFO_VAL) && \
net_ratelimit()) \
printk x; \
} while (0)
#else /* BCMDBG */
#define BRCMF_SD_ERROR(x)
#define BRCMF_SD_INFO(x)
#endif /* BCMDBG */
/* debugging macros */
#define SDLX_MSG(x)
#define SDIOH_CMD_TYPE_NORMAL 0 /* Normal command */
#define SDIOH_CMD_TYPE_APPEND 1 /* Append command */
#define SDIOH_CMD_TYPE_CUTTHRU 2 /* Cut-through command */
#define SDIOH_DATA_PIO 0 /* PIO mode */
#define SDIOH_DATA_DMA 1 /* DMA mode */
struct brcmf_sdio_card {
bool init_success; /* underlying driver successfully attached */
void *sdioh; /* handler for sdioh */
u32 vendevid; /* Target Vendor and Device ID on SD bus */
bool regfail; /* Save status of last
reg_read/reg_write call */
u32 sbwad; /* Save backplane window address */
};
/**
* SDIO Host Controller info
*/
struct sdio_hc {
struct sdio_hc *next;
struct device *dev; /* platform device handle */
void *regs; /* SDIO Host Controller address */
struct brcmf_sdio_card *card;
void *ch;
unsigned int oob_irq;
unsigned long oob_flags; /* OOB Host specifiction
as edge and etc */
bool oob_irq_registered;
};
/* local copy of bcm sd handler */
static struct brcmf_sdio_card *l_card;
const uint brcmf_sdio_msglevel = BRCMF_SD_ERROR_VAL;
static struct sdio_hc *sdhcinfo;
/* driver info, initialized when brcmf_sdio_register is called */
static struct brcmf_sdioh_driver drvinfo = { NULL, NULL };
/* Module parameters specific to each host-controller driver */
module_param(sd_msglevel, uint, 0);
extern uint sd_f2_blocksize;
module_param(sd_f2_blocksize, int, 0);
/* forward declarations */
int brcmf_sdio_probe(struct device *dev);
EXPORT_SYMBOL(brcmf_sdio_probe);
int brcmf_sdio_remove(struct device *dev);
EXPORT_SYMBOL(brcmf_sdio_remove);
struct brcmf_sdio_card*
brcmf_sdcard_attach(void *cfghdl, u32 *regsva, uint irq)
{
struct brcmf_sdio_card *card;
card = kzalloc(sizeof(struct brcmf_sdio_card), GFP_ATOMIC);
if (card == NULL) {
BRCMF_SD_ERROR(("sdcard_attach: out of memory"));
return NULL;
}
/* save the handler locally */
l_card = card;
card->sdioh = brcmf_sdioh_attach(cfghdl, irq);
if (!card->sdioh) {
brcmf_sdcard_detach(card);
return NULL;
}
card->init_success = true;
*regsva = SI_ENUM_BASE;
/* Report the BAR, to fix if needed */
card->sbwad = SI_ENUM_BASE;
return card;
}
int brcmf_sdcard_detach(struct brcmf_sdio_card *card)
{
if (card != NULL) {
if (card->sdioh) {
brcmf_sdioh_detach(card->sdioh);
card->sdioh = NULL;
}
kfree(card);
}
l_card = NULL;
return 0;
}
int
brcmf_sdcard_iovar_op(struct brcmf_sdio_card *card, const char *name,
void *params, int plen, void *arg, int len, bool set)
{
return brcmf_sdioh_iovar_op(card->sdioh, name, params, plen, arg,
len, set);
}
int brcmf_sdcard_intr_enable(struct brcmf_sdio_card *card)
{
return brcmf_sdioh_interrupt_set(card->sdioh, true);
}
int brcmf_sdcard_intr_disable(struct brcmf_sdio_card *card)
{
return brcmf_sdioh_interrupt_set(card->sdioh, false);
}
int brcmf_sdcard_intr_reg(struct brcmf_sdio_card *card,
void (*fn)(void *), void *argh)
{
return brcmf_sdioh_interrupt_register(card->sdioh, fn, argh);
}
int brcmf_sdcard_intr_dereg(struct brcmf_sdio_card *card)
{
return brcmf_sdioh_interrupt_deregister(card->sdioh);
}
u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
int *err)
{
int status;
s32 retry = 0;
u8 data = 0;
if (!card)
card = l_card;
do {
if (retry) /* wait for 1 ms till bus get settled down */
udelay(1000);
status =
brcmf_sdioh_cfg_read(card->sdioh, fnc_num, addr,
(u8 *) &data);
} while (status != 0
&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
__func__, fnc_num, addr, data));
return data;
}
void
brcmf_sdcard_cfg_write(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
u8 data, int *err)
{
int status;
s32 retry = 0;
if (!card)
card = l_card;
do {
if (retry) /* wait for 1 ms till bus get settled down */
udelay(1000);
status =
brcmf_sdioh_cfg_write(card->sdioh, fnc_num, addr,
(u8 *) &data);
} while (status != 0
&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
__func__, fnc_num, addr, data));
}
u32 brcmf_sdcard_cfg_read_word(struct brcmf_sdio_card *card, uint fnc_num,
u32 addr, int *err)
{
int status;
u32 data = 0;
if (!card)
card = l_card;
status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_READ, fnc_num, addr, &data, 4);
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
__func__, fnc_num, addr, data));
return data;
}
void
brcmf_sdcard_cfg_write_word(struct brcmf_sdio_card *card, uint fnc_num,
u32 addr, u32 data, int *err)
{
int status;
if (!card)
card = l_card;
status =
brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_WRITE, fnc_num, addr, &data, 4);
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
__func__, fnc_num, addr, data));
}
int brcmf_sdcard_cis_read(struct brcmf_sdio_card *card, uint func, u8 * cis,
uint length)
{
int status;
u8 *tmp_buf, *tmp_ptr;
u8 *ptr;
bool ascii = func & ~0xf;
func &= 0x7;
if (!card)
card = l_card;
status = brcmf_sdioh_cis_read(card->sdioh, func, cis, length);
if (ascii) {
/* Move binary bits to tmp and format them
into the provided buffer. */
tmp_buf = kmalloc(length, GFP_ATOMIC);
if (tmp_buf == NULL) {
BRCMF_SD_ERROR(("%s: out of memory\n", __func__));
return -ENOMEM;
}
memcpy(tmp_buf, cis, length);
for (tmp_ptr = tmp_buf, ptr = cis; ptr < (cis + length - 4);
tmp_ptr++) {
ptr += sprintf((char *)ptr, "%.2x ", *tmp_ptr & 0xff);
if ((((tmp_ptr - tmp_buf) + 1) & 0xf) == 0)
ptr += sprintf((char *)ptr, "\n");
}
kfree(tmp_buf);
}
return status;
}
static int
brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_card *card, u32 address)
{
int err = 0;
brcmf_sdcard_cfg_write(card, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
(address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
if (!err)
brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
SBSDIO_FUNC1_SBADDRMID,
(address >> 16) & SBSDIO_SBADDRMID_MASK,
&err);
if (!err)
brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
SBSDIO_FUNC1_SBADDRHIGH,
(address >> 24) & SBSDIO_SBADDRHIGH_MASK,
&err);
return err;
}
u32 brcmf_sdcard_reg_read(struct brcmf_sdio_card *card, u32 addr, uint size)
{
int status;
u32 word = 0;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, ", __func__, addr));
if (!card)
card = l_card;
if (bar0 != card->sbwad) {
if (brcmf_sdcard_set_sbaddr_window(card, bar0))
return 0xFFFFFFFF;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
if (size == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_READ, SDIO_FUNC_1, addr, &word, size);
card->regfail = (status != 0);
BRCMF_SD_INFO(("u32data = 0x%x\n", word));
/* if ok, return appropriately masked word */
if (status == 0) {
switch (size) {
case sizeof(u8):
return word & 0xff;
case sizeof(u16):
return word & 0xffff;
case sizeof(u32):
return word;
default:
card->regfail = true;
}
}
/* otherwise, bad sdio access or invalid size */
BRCMF_SD_ERROR(("%s: error reading addr 0x%04x size %d\n", __func__,
addr, size));
return 0xFFFFFFFF;
}
u32 brcmf_sdcard_reg_write(struct brcmf_sdio_card *card, u32 addr, uint size,
u32 data)
{
int status;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
int err = 0;
BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
__func__, addr, size * 8, data));
if (!card)
card = l_card;
if (bar0 != card->sbwad) {
err = brcmf_sdcard_set_sbaddr_window(card, bar0);
if (err)
return err;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
if (size == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
status =
brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_WRITE, SDIO_FUNC_1, addr, &data, size);
card->regfail = (status != 0);
if (status == 0)
return 0;
BRCMF_SD_ERROR(("%s: error writing 0x%08x to addr 0x%04x size %d\n",
__func__, data, addr, size));
return 0xFFFFFFFF;
}
bool brcmf_sdcard_regfail(struct brcmf_sdio_card *card)
{
return card->regfail;
}
int
brcmf_sdcard_recv_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
uint flags,
u8 *buf, uint nbytes, struct sk_buff *pkt,
void (*complete)(void *handle, int status,
bool sync_waiting),
void *handle)
{
int status;
uint incr_fix;
uint width;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
int err = 0;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
__func__, fn, addr, nbytes));
/* Async not implemented yet */
if (flags & SDIO_REQ_ASYNC)
return -ENOTSUPP;
if (bar0 != card->sbwad) {
err = brcmf_sdcard_set_sbaddr_window(card, bar0);
if (err)
return err;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
if (width == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
status = brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
incr_fix, SDIOH_READ, fn, addr, width, nbytes, buf, pkt);
return status;
}
int
brcmf_sdcard_send_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
uint flags, u8 *buf, uint nbytes, void *pkt,
void (*complete)(void *handle, int status,
bool sync_waiting),
void *handle)
{
uint incr_fix;
uint width;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
int err = 0;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
__func__, fn, addr, nbytes));
/* Async not implemented yet */
if (flags & SDIO_REQ_ASYNC)
return -ENOTSUPP;
if (bar0 != card->sbwad) {
err = brcmf_sdcard_set_sbaddr_window(card, bar0);
if (err)
return err;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
if (width == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
return brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
incr_fix, SDIOH_WRITE, fn, addr, width, nbytes, buf, pkt);
}
int brcmf_sdcard_rwdata(struct brcmf_sdio_card *card, uint rw, u32 addr,
u8 *buf, uint nbytes)
{
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
return brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
SDIOH_DATA_INC, (rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
addr, 4, nbytes, buf, NULL);
}
int brcmf_sdcard_abort(struct brcmf_sdio_card *card, uint fn)
{
return brcmf_sdioh_abort(card->sdioh, fn);
}
int brcmf_sdcard_query_device(struct brcmf_sdio_card *card)
{
card->vendevid = (PCI_VENDOR_ID_BROADCOM << 16) | 0;
return card->vendevid;
}
u32 brcmf_sdcard_cur_sbwad(struct brcmf_sdio_card *card)
{
if (!card)
card = l_card;
return card->sbwad;
}
int brcmf_sdio_probe(struct device *dev)
{
struct sdio_hc *sdhc = NULL;
u32 regs = 0;
struct brcmf_sdio_card *card = NULL;
int irq = 0;
u32 vendevid;
unsigned long irq_flags = 0;
/* allocate SDIO Host Controller state info */
sdhc = kzalloc(sizeof(struct sdio_hc), GFP_ATOMIC);
if (!sdhc) {
SDLX_MSG(("%s: out of memory\n", __func__));
goto err;
}
sdhc->dev = (void *)dev;
card = brcmf_sdcard_attach((void *)0, ®s, irq);
if (!card) {
SDLX_MSG(("%s: attach failed\n", __func__));
goto err;
}
sdhc->card = card;
sdhc->oob_irq = irq;
sdhc->oob_flags = irq_flags;
sdhc->oob_irq_registered = false; /* to make sure.. */
/* chain SDIO Host Controller info together */
sdhc->next = sdhcinfo;
sdhcinfo = sdhc;
/* Read the vendor/device ID from the CIS */
vendevid = brcmf_sdcard_query_device(card);
/* try to attach to the target device */
sdhc->ch = drvinfo.attach((vendevid >> 16), (vendevid & 0xFFFF),
0, 0, 0, 0, regs, card);
if (!sdhc->ch) {
SDLX_MSG(("%s: device attach failed\n", __func__));
goto err;
}
return 0;
/* error handling */
err:
if (sdhc) {
if (sdhc->card)
brcmf_sdcard_detach(sdhc->card);
kfree(sdhc);
}
return -ENODEV;
}
int brcmf_sdio_remove(struct device *dev)
{
struct sdio_hc *sdhc, *prev;
sdhc = sdhcinfo;
drvinfo.detach(sdhc->ch);
brcmf_sdcard_detach(sdhc->card);
/* find the SDIO Host Controller state for this pdev
and take it out from the list */
for (sdhc = sdhcinfo, prev = NULL; sdhc; sdhc = sdhc->next) {
if (sdhc->dev == (void *)dev) {
if (prev)
prev->next = sdhc->next;
else
sdhcinfo = NULL;
break;
}
prev = sdhc;
}
if (!sdhc) {
SDLX_MSG(("%s: failed\n", __func__));
return 0;
}
/* release SDIO Host Controller info */
kfree(sdhc);
return 0;
}
int brcmf_sdio_register(struct brcmf_sdioh_driver *driver)
{
drvinfo = *driver;
SDLX_MSG(("Linux Kernel SDIO/MMC Driver\n"));
return brcmf_sdio_function_init();
}
void brcmf_sdio_unregister(void)
{
brcmf_sdio_function_cleanup();
}
void brcmf_sdio_wdtmr_enable(bool enable)
{
if (enable)
brcmf_sdbrcm_wd_timer(sdhcinfo->ch, brcmf_watchdog_ms);
else
brcmf_sdbrcm_wd_timer(sdhcinfo->ch, 0);
}
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