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mwifiex: firmware download enhancements 

Same chip is being used by WLAN as well as bluetooth
drivers. Each driver needs to check during initialisation
if firmware is already active or it needs to be freshly
downloaded. If one driver has started downloading the
firmware, other finds the winner flag as false.

mwifiex_check_fw_status() checks firmware status and also
check if WLAN is the winner for firmware downloading.

Once we detect that other interface is downloading
the firmware, we call this routine again with max
poll count to wait until firmware is ready.

This patch splits the routine to avoid checking
winner status unnecessarily multiple times and ensures
that correct messages are displayed to user.

Firmware status poll count is also increased to 150.

Signed-off-by: Chunfan Chen <jeffc@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
chunfan chen 2016-01-06 23:40:47 -08:00 committed by Kalle Valo
parent 04654c3861
commit 2fd5c6ed0b
5 changed files with 57 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/marvell/mwifiex/fw.h
View File

@ -96,7 +96,7 @@ enum KEY_TYPE_ID {
#define WAPI_KEY_LEN (WLAN_KEY_LEN_SMS4 + PN_LEN + 2)
#define MAX_POLL_TRIES 100
#define MAX_FIRMWARE_POLL_TRIES 100
#define MAX_FIRMWARE_POLL_TRIES 150
#define FIRMWARE_READY_SDIO 0xfedc
#define FIRMWARE_READY_PCIE 0xfedcba00

16
drivers/net/wireless/marvell/mwifiex/init.c
View File

@ -741,8 +741,6 @@ int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
u32 poll_num = 1;
if (adapter->if_ops.check_fw_status) {
adapter->winner = 0;
/* check if firmware is already running */
ret = adapter->if_ops.check_fw_status(adapter, poll_num);
if (!ret) {
@ -750,13 +748,23 @@ int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
"WLAN FW already running! Skip FW dnld\n");
return 0;
}
}
/* check if we are the winner for downloading FW */
if (adapter->if_ops.check_winner_status) {
adapter->winner = 0;
ret = adapter->if_ops.check_winner_status(adapter);
poll_num = MAX_FIRMWARE_POLL_TRIES;
if (ret) {
mwifiex_dbg(adapter, MSG,
"WLAN read winner status failed!\n");
return ret;
}
/* check if we are the winner for downloading FW */
if (!adapter->winner) {
mwifiex_dbg(adapter, MSG,
"FW already running! Skip FW dnld\n");
"WLAN is not the winner! Skip FW dnld\n");
goto poll_fw;
}
}

1
drivers/net/wireless/marvell/mwifiex/main.h
View File

@ -791,6 +791,7 @@ struct mwifiex_if_ops {
int (*init_if) (struct mwifiex_adapter *);
void (*cleanup_if) (struct mwifiex_adapter *);
int (*check_fw_status) (struct mwifiex_adapter *, u32);
int (*check_winner_status)(struct mwifiex_adapter *);
int (*prog_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *);
int (*register_dev) (struct mwifiex_adapter *);
void (*unregister_dev) (struct mwifiex_adapter *);

40
drivers/net/wireless/marvell/mwifiex/pcie.c
View File

@ -2007,14 +2007,12 @@ done:
/*
* This function checks the firmware status in card.
*
* The winner interface is also determined by this function.
*/
static int
mwifiex_check_fw_status(struct mwifiex_adapter *adapter, u32 poll_num)
{
int ret = 0;
u32 firmware_stat, winner_status;
u32 firmware_stat;
struct pcie_service_card *card = adapter->card;
const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
u32 tries;
@ -2054,19 +2052,28 @@ mwifiex_check_fw_status(struct mwifiex_adapter *adapter, u32 poll_num)
}
}
if (ret) {
if (mwifiex_read_reg(adapter, reg->fw_status,
&winner_status))
ret = -1;
else if (!winner_status) {
mwifiex_dbg(adapter, INFO,
"PCI-E is the winner\n");
adapter->winner = 1;
} else {
mwifiex_dbg(adapter, ERROR,
"PCI-E is not the winner <%#x,%d>, exit dnld\n",
ret, adapter->winner);
}
return ret;
}
/* This function checks if WLAN is the winner.
*/
static int
mwifiex_check_winner_status(struct mwifiex_adapter *adapter)
{
u32 winner = 0;
int ret = 0;
struct pcie_service_card *card = adapter->card;
const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
if (mwifiex_read_reg(adapter, reg->fw_status, &winner)) {
ret = -1;
} else if (!winner) {
mwifiex_dbg(adapter, INFO, "PCI-E is the winner\n");
adapter->winner = 1;
} else {
mwifiex_dbg(adapter, ERROR,
"PCI-E is not the winner <%#x,%d>, exit dnld\n",
ret, adapter->winner);
}
return ret;
@ -2675,6 +2682,7 @@ static struct mwifiex_if_ops pcie_ops = {
.init_if = mwifiex_pcie_init,
.cleanup_if = mwifiex_pcie_cleanup,
.check_fw_status = mwifiex_check_fw_status,
.check_winner_status = mwifiex_check_winner_status,
.prog_fw = mwifiex_prog_fw_w_helper,
.register_dev = mwifiex_register_dev,
.unregister_dev = mwifiex_unregister_dev,

33
drivers/net/wireless/marvell/mwifiex/sdio.c
View File

@ -1039,19 +1039,14 @@ done:
/*
* This function checks the firmware status in card.
*
* The winner interface is also determined by this function.
*/
static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
u32 poll_num)
{
struct sdio_mmc_card *card = adapter->card;
int ret = 0;
u16 firmware_stat;
u32 tries;
u8 winner_status;
/* Wait for firmware initialization event */
for (tries = 0; tries < poll_num; tries++) {
ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
if (ret)
@ -1065,16 +1060,25 @@ static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
}
}
if (ret) {
if (mwifiex_read_reg
(adapter, card->reg->status_reg_0, &winner_status))
winner_status = 0;
return ret;
}
/* This function checks if WLAN is the winner.
*/
static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter)
{
int ret = 0;
u8 winner = 0;
struct sdio_mmc_card *card = adapter->card;
if (mwifiex_read_reg(adapter, card->reg->status_reg_0, &winner))
return -1;
if (winner)
adapter->winner = 0;
else
adapter->winner = 1;
if (winner_status)
adapter->winner = 0;
else
adapter->winner = 1;
}
return ret;
}
@ -2620,6 +2624,7 @@ static struct mwifiex_if_ops sdio_ops = {
.init_if = mwifiex_init_sdio,
.cleanup_if = mwifiex_cleanup_sdio,
.check_fw_status = mwifiex_check_fw_status,
.check_winner_status = mwifiex_check_winner_status,
.prog_fw = mwifiex_prog_fw_w_helper,
.register_dev = mwifiex_register_dev,
.unregister_dev = mwifiex_unregister_dev,