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path: root/drivers/net/wireless/ath/ath6kl/sdio.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/sdio.c')
-rw-r--r--drivers/net/wireless/ath/ath6kl/sdio.c242
1 files changed, 161 insertions, 81 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c b/drivers/net/wireless/ath/ath6kl/sdio.c
index 9475e2d0d0b..339d89f14d3 100644
--- a/drivers/net/wireless/ath/ath6kl/sdio.c
+++ b/drivers/net/wireless/ath/ath6kl/sdio.c
@@ -1,5 +1,6 @@
/*
* Copyright (c) 2004-2011 Atheros Communications Inc.
+ * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -27,10 +28,12 @@
#include "target.h"
#include "debug.h"
#include "cfg80211.h"
+#include "trace.h"
struct ath6kl_sdio {
struct sdio_func *func;
+ /* protects access to bus_req_freeq */
spinlock_t lock;
/* free list */
@@ -49,14 +52,20 @@ struct ath6kl_sdio {
/* scatter request list head */
struct list_head scat_req;
+ atomic_t irq_handling;
+ wait_queue_head_t irq_wq;
+
+ /* protects access to scat_req */
spinlock_t scat_lock;
+
bool scatter_enabled;
bool is_disabled;
- atomic_t irq_handling;
const struct sdio_device_id *id;
struct work_struct wr_async_work;
struct list_head wr_asyncq;
+
+ /* protects access to wr_asyncq */
spinlock_t wr_async_lock;
};
@@ -171,6 +180,8 @@ static int ath6kl_sdio_io(struct sdio_func *func, u32 request, u32 addr,
request & HIF_FIXED_ADDRESS ? " (fixed)" : "", buf, len);
ath6kl_dbg_dump(ATH6KL_DBG_SDIO_DUMP, NULL, "sdio ", buf, len);
+ trace_ath6kl_sdio(addr, request, buf, len);
+
return ret;
}
@@ -301,6 +312,13 @@ static int ath6kl_sdio_scat_rw(struct ath6kl_sdio *ar_sdio,
sdio_claim_host(ar_sdio->func);
mmc_set_data_timeout(&data, ar_sdio->func->card);
+
+ trace_ath6kl_sdio_scat(scat_req->addr,
+ scat_req->req,
+ scat_req->len,
+ scat_req->scat_entries,
+ scat_req->scat_list);
+
/* synchronous call to process request */
mmc_wait_for_req(ar_sdio->func->card->host, &mmc_req);
@@ -327,17 +345,17 @@ static int ath6kl_sdio_alloc_prep_scat_req(struct ath6kl_sdio *ar_sdio,
{
struct hif_scatter_req *s_req;
struct bus_request *bus_req;
- int i, scat_req_sz, scat_list_sz, sg_sz, buf_sz;
+ int i, scat_req_sz, scat_list_sz, size;
u8 *virt_buf;
- scat_list_sz = (n_scat_entry - 1) * sizeof(struct hif_scatter_item);
+ scat_list_sz = n_scat_entry * sizeof(struct hif_scatter_item);
scat_req_sz = sizeof(*s_req) + scat_list_sz;
if (!virt_scat)
- sg_sz = sizeof(struct scatterlist) * n_scat_entry;
+ size = sizeof(struct scatterlist) * n_scat_entry;
else
- buf_sz = 2 * L1_CACHE_BYTES +
- ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
+ size = 2 * L1_CACHE_BYTES +
+ ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER;
for (i = 0; i < n_scat_req; i++) {
/* allocate the scatter request */
@@ -346,7 +364,7 @@ static int ath6kl_sdio_alloc_prep_scat_req(struct ath6kl_sdio *ar_sdio,
return -ENOMEM;
if (virt_scat) {
- virt_buf = kzalloc(buf_sz, GFP_KERNEL);
+ virt_buf = kzalloc(size, GFP_KERNEL);
if (!virt_buf) {
kfree(s_req);
return -ENOMEM;
@@ -356,7 +374,7 @@ static int ath6kl_sdio_alloc_prep_scat_req(struct ath6kl_sdio *ar_sdio,
(u8 *)L1_CACHE_ALIGN((unsigned long)virt_buf);
} else {
/* allocate sglist */
- s_req->sgentries = kzalloc(sg_sz, GFP_KERNEL);
+ s_req->sgentries = kzalloc(size, GFP_KERNEL);
if (!s_req->sgentries) {
kfree(s_req);
@@ -402,10 +420,14 @@ static int ath6kl_sdio_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
return -ENOMEM;
mutex_lock(&ar_sdio->dma_buffer_mutex);
tbuf = ar_sdio->dma_buffer;
- memcpy(tbuf, buf, len);
+
+ if (request & HIF_WRITE)
+ memcpy(tbuf, buf, len);
+
bounced = true;
- } else
+ } else {
tbuf = buf;
+ }
ret = ath6kl_sdio_io(ar_sdio->func, request, addr, tbuf, len);
if ((request & HIF_READ) && bounced)
@@ -420,9 +442,9 @@ static int ath6kl_sdio_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
static void __ath6kl_sdio_write_async(struct ath6kl_sdio *ar_sdio,
struct bus_request *req)
{
- if (req->scat_req)
+ if (req->scat_req) {
ath6kl_sdio_scat_rw(ar_sdio, req);
- else {
+ } else {
void *context;
int status;
@@ -461,7 +483,6 @@ static void ath6kl_sdio_irq_handler(struct sdio_func *func)
ar_sdio = sdio_get_drvdata(func);
atomic_set(&ar_sdio->irq_handling, 1);
-
/*
* Release the host during interrups so we can pick it back up when
* we process commands.
@@ -470,7 +491,10 @@ static void ath6kl_sdio_irq_handler(struct sdio_func *func)
status = ath6kl_hif_intr_bh_handler(ar_sdio->ar);
sdio_claim_host(ar_sdio->func);
+
atomic_set(&ar_sdio->irq_handling, 0);
+ wake_up(&ar_sdio->irq_wq);
+
WARN_ON(status && status != -ECANCELED);
}
@@ -539,7 +563,7 @@ static int ath6kl_sdio_write_async(struct ath6kl *ar, u32 address, u8 *buffer,
bus_req = ath6kl_sdio_alloc_busreq(ar_sdio);
- if (!bus_req)
+ if (WARN_ON_ONCE(!bus_req))
return -ENOMEM;
bus_req->address = address;
@@ -571,6 +595,13 @@ static void ath6kl_sdio_irq_enable(struct ath6kl *ar)
sdio_release_host(ar_sdio->func);
}
+static bool ath6kl_sdio_is_on_irq(struct ath6kl *ar)
+{
+ struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
+
+ return !atomic_read(&ar_sdio->irq_handling);
+}
+
static void ath6kl_sdio_irq_disable(struct ath6kl *ar)
{
struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
@@ -578,10 +609,14 @@ static void ath6kl_sdio_irq_disable(struct ath6kl *ar)
sdio_claim_host(ar_sdio->func);
- /* Mask our function IRQ */
- while (atomic_read(&ar_sdio->irq_handling)) {
+ if (atomic_read(&ar_sdio->irq_handling)) {
sdio_release_host(ar_sdio->func);
- schedule_timeout(HZ / 10);
+
+ ret = wait_event_interruptible(ar_sdio->irq_wq,
+ ath6kl_sdio_is_on_irq(ar));
+ if (ret)
+ return;
+
sdio_claim_host(ar_sdio->func);
}
@@ -603,6 +638,8 @@ static struct hif_scatter_req *ath6kl_sdio_scatter_req_get(struct ath6kl *ar)
node = list_first_entry(&ar_sdio->scat_req,
struct hif_scatter_req, list);
list_del(&node->list);
+
+ node->scat_q_depth = get_queue_depth(&ar_sdio->scat_req);
}
spin_unlock_bh(&ar_sdio->scat_lock);
@@ -620,7 +657,6 @@ static void ath6kl_sdio_scatter_req_add(struct ath6kl *ar,
list_add_tail(&s_req->list, &ar_sdio->scat_req);
spin_unlock_bh(&ar_sdio->scat_lock);
-
}
/* scatter gather read write request */
@@ -635,12 +671,12 @@ static int ath6kl_sdio_async_rw_scatter(struct ath6kl *ar,
return -EINVAL;
ath6kl_dbg(ATH6KL_DBG_SCATTER,
- "hif-scatter: total len: %d scatter entries: %d\n",
- scat_req->len, scat_req->scat_entries);
+ "hif-scatter: total len: %d scatter entries: %d\n",
+ scat_req->len, scat_req->scat_entries);
- if (request & HIF_SYNCHRONOUS)
+ if (request & HIF_SYNCHRONOUS) {
status = ath6kl_sdio_scat_rw(ar_sdio, scat_req->busrequest);
- else {
+ } else {
spin_lock_bh(&ar_sdio->wr_async_lock);
list_add_tail(&scat_req->busrequest->list, &ar_sdio->wr_asyncq);
spin_unlock_bh(&ar_sdio->wr_async_lock);
@@ -683,7 +719,7 @@ static int ath6kl_sdio_enable_scatter(struct ath6kl *ar)
{
struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
struct htc_target *target = ar->htc_target;
- int ret;
+ int ret = 0;
bool virt_scat = false;
if (ar_sdio->scatter_enabled)
@@ -772,7 +808,6 @@ static int ath6kl_sdio_config(struct ath6kl *ar)
if (ret) {
ath6kl_err("Set sdio block size %d failed: %d)\n",
HIF_MBOX_BLOCK_SIZE, ret);
- sdio_release_host(func);
goto out;
}
@@ -782,7 +817,7 @@ out:
return ret;
}
-static int ath6kl_sdio_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
+static int ath6kl_set_sdio_pm_caps(struct ath6kl *ar)
{
struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
struct sdio_func *func = ar_sdio->func;
@@ -793,60 +828,89 @@ static int ath6kl_sdio_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
ath6kl_dbg(ATH6KL_DBG_SUSPEND, "sdio suspend pm_caps 0x%x\n", flags);
- if (!(flags & MMC_PM_KEEP_POWER) ||
- (ar->conf_flags & ATH6KL_CONF_SUSPEND_CUTPOWER)) {
- /* as host doesn't support keep power we need to cut power */
- return ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_CUTPOWER,
- NULL);
- }
+ if (!(flags & MMC_PM_WAKE_SDIO_IRQ) ||
+ !(flags & MMC_PM_KEEP_POWER))
+ return -EINVAL;
ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
if (ret) {
- printk(KERN_ERR "ath6kl: set sdio pm flags failed: %d\n",
- ret);
+ ath6kl_err("set sdio keep pwr flag failed: %d\n", ret);
return ret;
}
- if (!(flags & MMC_PM_WAKE_SDIO_IRQ))
- goto deepsleep;
-
/* sdio irq wakes up host */
+ ret = sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ);
+ if (ret)
+ ath6kl_err("set sdio wake irq flag failed: %d\n", ret);
- if (ar->state == ATH6KL_STATE_SCHED_SCAN) {
- ret = ath6kl_cfg80211_suspend(ar,
- ATH6KL_CFG_SUSPEND_SCHED_SCAN,
- NULL);
- if (ret) {
- ath6kl_warn("Schedule scan suspend failed: %d", ret);
- return ret;
- }
+ return ret;
+}
+
+static int ath6kl_sdio_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
+{
+ struct ath6kl_sdio *ar_sdio = ath6kl_sdio_priv(ar);
+ struct sdio_func *func = ar_sdio->func;
+ mmc_pm_flag_t flags;
+ bool try_deepsleep = false;
+ int ret;
- ret = sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ);
+ if (ar->suspend_mode == WLAN_POWER_STATE_WOW ||
+ (!ar->suspend_mode && wow)) {
+ ret = ath6kl_set_sdio_pm_caps(ar);
if (ret)
- ath6kl_warn("set sdio wake irq flag failed: %d\n", ret);
+ goto cut_pwr;
- return ret;
+ ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_WOW, wow);
+ if (ret && ret != -ENOTCONN)
+ ath6kl_err("wow suspend failed: %d\n", ret);
+
+ if (ret &&
+ (!ar->wow_suspend_mode ||
+ ar->wow_suspend_mode == WLAN_POWER_STATE_DEEP_SLEEP))
+ try_deepsleep = true;
+ else if (ret &&
+ ar->wow_suspend_mode == WLAN_POWER_STATE_CUT_PWR)
+ goto cut_pwr;
+ if (!ret)
+ return 0;
}
- if (wow) {
+ if (ar->suspend_mode == WLAN_POWER_STATE_DEEP_SLEEP ||
+ !ar->suspend_mode || try_deepsleep) {
+ flags = sdio_get_host_pm_caps(func);
+ if (!(flags & MMC_PM_KEEP_POWER))
+ goto cut_pwr;
+
+ ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+ if (ret)
+ goto cut_pwr;
+
/*
- * The host sdio controller is capable of keep power and
- * sdio irq wake up at this point. It's fine to continue
- * wow suspend operation.
+ * Workaround to support Deep Sleep with MSM, set the host pm
+ * flag as MMC_PM_WAKE_SDIO_IRQ to allow SDCC deiver to disable
+ * the sdc2_clock and internally allows MSM to enter
+ * TCXO shutdown properly.
*/
- ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_WOW, wow);
- if (ret)
- return ret;
+ if ((flags & MMC_PM_WAKE_SDIO_IRQ)) {
+ ret = sdio_set_host_pm_flags(func,
+ MMC_PM_WAKE_SDIO_IRQ);
+ if (ret)
+ goto cut_pwr;
+ }
- ret = sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ);
+ ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_DEEPSLEEP,
+ NULL);
if (ret)
- ath6kl_err("set sdio wake irq flag failed: %d\n", ret);
+ goto cut_pwr;
- return ret;
+ return 0;
}
-deepsleep:
- return ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_DEEPSLEEP, NULL);
+cut_pwr:
+ if (func->card && func->card->host)
+ func->card->host->pm_flags &= ~MMC_PM_KEEP_POWER;
+
+ return ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_CUTPOWER, NULL);
}
static int ath6kl_sdio_resume(struct ath6kl *ar)
@@ -869,7 +933,14 @@ static int ath6kl_sdio_resume(struct ath6kl *ar)
case ATH6KL_STATE_WOW:
break;
- case ATH6KL_STATE_SCHED_SCAN:
+
+ case ATH6KL_STATE_SUSPENDING:
+ break;
+
+ case ATH6KL_STATE_RESUMING:
+ break;
+
+ case ATH6KL_STATE_RECOVERY:
break;
}
@@ -909,9 +980,8 @@ static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr)
}
if (status) {
- ath6kl_err("%s: failed to write initial bytes of 0x%x "
- "to window reg: 0x%X\n", __func__,
- addr, reg_addr);
+ ath6kl_err("%s: failed to write initial bytes of 0x%x to window reg: 0x%X\n",
+ __func__, addr, reg_addr);
return status;
}
@@ -949,7 +1019,7 @@ static int ath6kl_sdio_diag_read32(struct ath6kl *ar, u32 address, u32 *data)
(u8 *)data, sizeof(u32), HIF_RD_SYNC_BYTE_INC);
if (status) {
ath6kl_err("%s: failed to read from window data addr\n",
- __func__);
+ __func__);
return status;
}
@@ -989,7 +1059,6 @@ static int ath6kl_sdio_bmi_credits(struct ath6kl *ar)
timeout = jiffies + msecs_to_jiffies(BMI_COMMUNICATION_TIMEOUT);
while (time_before(jiffies, timeout) && !ar->bmi.cmd_credits) {
-
/*
* Hit the credit counter with a 4-byte access, the first byte
* read will hit the counter and cause a decrement, while the
@@ -1000,8 +1069,8 @@ static int ath6kl_sdio_bmi_credits(struct ath6kl *ar)
(u8 *)&ar->bmi.cmd_credits, 4,
HIF_RD_SYNC_BYTE_INC);
if (ret) {
- ath6kl_err("Unable to decrement the command credit "
- "count register: %d\n", ret);
+ ath6kl_err("Unable to decrement the command credit count register: %d\n",
+ ret);
return ret;
}
@@ -1061,10 +1130,12 @@ static int ath6kl_sdio_bmi_write(struct ath6kl *ar, u8 *buf, u32 len)
ret = ath6kl_sdio_read_write_sync(ar, addr, buf, len,
HIF_WR_SYNC_BYTE_INC);
- if (ret)
+ if (ret) {
ath6kl_err("unable to send the bmi data to the device\n");
+ return ret;
+ }
- return ret;
+ return 0;
}
static int ath6kl_sdio_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
@@ -1260,10 +1331,12 @@ static int ath6kl_sdio_probe(struct sdio_func *func,
INIT_WORK(&ar_sdio->wr_async_work, ath6kl_sdio_write_async_work);
+ init_waitqueue_head(&ar_sdio->irq_wq);
+
for (count = 0; count < BUS_REQUEST_MAX_NUM; count++)
ath6kl_sdio_free_bus_req(ar_sdio, &ar_sdio->bus_req[count]);
- ar = ath6kl_core_alloc(&ar_sdio->func->dev);
+ ar = ath6kl_core_create(&ar_sdio->func->dev);
if (!ar) {
ath6kl_err("Failed to alloc ath6kl core\n");
ret = -ENOMEM;
@@ -1284,7 +1357,7 @@ static int ath6kl_sdio_probe(struct sdio_func *func,
goto err_core_alloc;
}
- ret = ath6kl_core_init(ar);
+ ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_MBOX);
if (ret) {
ath6kl_err("Failed to init ath6kl core\n");
goto err_core_alloc;
@@ -1293,7 +1366,7 @@ static int ath6kl_sdio_probe(struct sdio_func *func,
return ret;
err_core_alloc:
- ath6kl_core_free(ar_sdio->ar);
+ ath6kl_core_destroy(ar_sdio->ar);
err_dma:
kfree(ar_sdio->dma_buffer);
err_hif:
@@ -1316,6 +1389,7 @@ static void ath6kl_sdio_remove(struct sdio_func *func)
cancel_work_sync(&ar_sdio->wr_async_work);
ath6kl_core_cleanup(ar_sdio->ar);
+ ath6kl_core_destroy(ar_sdio->ar);
kfree(ar_sdio->dma_buffer);
kfree(ar_sdio);
@@ -1332,7 +1406,7 @@ static const struct sdio_device_id ath6kl_sdio_devices[] = {
MODULE_DEVICE_TABLE(sdio, ath6kl_sdio_devices);
static struct sdio_driver ath6kl_sdio_driver = {
- .name = "ath6kl",
+ .name = "ath6kl_sdio",
.id_table = ath6kl_sdio_devices,
.probe = ath6kl_sdio_probe,
.remove = ath6kl_sdio_remove,
@@ -1362,19 +1436,25 @@ MODULE_AUTHOR("Atheros Communications, Inc.");
MODULE_DESCRIPTION("Driver support for Atheros AR600x SDIO devices");
MODULE_LICENSE("Dual BSD/GPL");
-MODULE_FIRMWARE(AR6003_HW_2_0_OTP_FILE);
-MODULE_FIRMWARE(AR6003_HW_2_0_FIRMWARE_FILE);
-MODULE_FIRMWARE(AR6003_HW_2_0_PATCH_FILE);
+MODULE_FIRMWARE(AR6003_HW_2_0_FW_DIR "/" AR6003_HW_2_0_OTP_FILE);
+MODULE_FIRMWARE(AR6003_HW_2_0_FW_DIR "/" AR6003_HW_2_0_FIRMWARE_FILE);
+MODULE_FIRMWARE(AR6003_HW_2_0_FW_DIR "/" AR6003_HW_2_0_PATCH_FILE);
MODULE_FIRMWARE(AR6003_HW_2_0_BOARD_DATA_FILE);
MODULE_FIRMWARE(AR6003_HW_2_0_DEFAULT_BOARD_DATA_FILE);
-MODULE_FIRMWARE(AR6003_HW_2_1_1_OTP_FILE);
-MODULE_FIRMWARE(AR6003_HW_2_1_1_FIRMWARE_FILE);
-MODULE_FIRMWARE(AR6003_HW_2_1_1_PATCH_FILE);
+MODULE_FIRMWARE(AR6003_HW_2_1_1_FW_DIR "/" AR6003_HW_2_1_1_OTP_FILE);
+MODULE_FIRMWARE(AR6003_HW_2_1_1_FW_DIR "/" AR6003_HW_2_1_1_FIRMWARE_FILE);
+MODULE_FIRMWARE(AR6003_HW_2_1_1_FW_DIR "/" AR6003_HW_2_1_1_PATCH_FILE);
MODULE_FIRMWARE(AR6003_HW_2_1_1_BOARD_DATA_FILE);
MODULE_FIRMWARE(AR6003_HW_2_1_1_DEFAULT_BOARD_DATA_FILE);
-MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_0_FW_DIR "/" AR6004_HW_1_0_FIRMWARE_FILE);
MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE);
MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE);
-MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_1_FW_DIR "/" AR6004_HW_1_1_FIRMWARE_FILE);
MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE);
MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_2_FW_DIR "/" AR6004_HW_1_2_FIRMWARE_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE);
+MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);