From d27121fca12957036077ef56ee0146c99b8a92f7 Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Wed, 16 Nov 2016 18:39:07 +0530 Subject: mwifiex: get rid of drv_info* adapter variables We can avoid drv_info_dump and drv_info_size adapter variables. This info can be passed to mwifiex_upload_device_dump() as parameters Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 43facba641bf..3abc1dfb0ec4 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -2548,13 +2548,15 @@ done: static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter) { struct sdio_mmc_card *card = adapter->card; + int drv_info_size; + void *drv_info; - mwifiex_drv_info_dump(adapter); + drv_info_size = mwifiex_drv_info_dump(adapter, &drv_info); if (card->fw_dump_enh) mwifiex_sdio_generic_fw_dump(adapter); else mwifiex_sdio_fw_dump(adapter); - mwifiex_upload_device_dump(adapter); + mwifiex_upload_device_dump(adapter, drv_info, drv_info_size); } static void mwifiex_sdio_work(struct work_struct *work) -- cgit From 41efaf5824e7cb16c54bbec1273d86d80cdac283 Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Wed, 16 Nov 2016 18:39:08 +0530 Subject: mwifiex: wait firmware dump complete during card remove process Wait for firmware dump complete in card remove function. For sdio interface, there are two diffenrent cases, card reset trigger sdio_work and firmware dump trigger sdio_work. Do code rearrangement for distinguish between these two cases. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Reviewed-by: Brian Norris Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 3abc1dfb0ec4..159ac8037cdc 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -46,6 +46,9 @@ */ static u8 user_rmmod; +static void mwifiex_sdio_work(struct work_struct *work); +static DECLARE_WORK(sdio_work, mwifiex_sdio_work); + static struct mwifiex_if_ops sdio_ops; static unsigned long iface_work_flags; @@ -218,7 +221,7 @@ static int mwifiex_sdio_resume(struct device *dev) * This function removes the interface and frees up the card structure. */ static void -mwifiex_sdio_remove(struct sdio_func *func) +__mwifiex_sdio_remove(struct sdio_func *func) { struct sdio_mmc_card *card; struct mwifiex_adapter *adapter; @@ -247,6 +250,13 @@ mwifiex_sdio_remove(struct sdio_func *func) mwifiex_remove_card(adapter); } +static void +mwifiex_sdio_remove(struct sdio_func *func) +{ + cancel_work_sync(&sdio_work); + __mwifiex_sdio_remove(func); +} + /* * SDIO suspend. * @@ -2222,7 +2232,7 @@ static void mwifiex_recreate_adapter(struct sdio_mmc_card *card) * discovered and initializes them from scratch. */ - mwifiex_sdio_remove(func); + __mwifiex_sdio_remove(func); /* * Normally, we would let the driver core take care of releasing these. @@ -2569,7 +2579,6 @@ static void mwifiex_sdio_work(struct work_struct *work) mwifiex_sdio_card_reset_work(save_adapter); } -static DECLARE_WORK(sdio_work, mwifiex_sdio_work); /* This function resets the card */ static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) { -- cgit From 90ff71f9557591218b5fce1ce7b67afd4cf83894 Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Wed, 30 Nov 2016 20:22:16 +0530 Subject: mwifiex: code rearrangement in pcie.c and sdio.c Next patch in this series is going to use mwifiex_read_reg() in remove handlers. The changes here are prerequisites to avoid forward declarations. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 336 ++++++++++++++-------------- 1 file changed, 165 insertions(+), 171 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 159ac8037cdc..ba3bc95a2d35 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -215,6 +215,171 @@ static int mwifiex_sdio_resume(struct device *dev) return 0; } +/* Write data into SDIO card register. Caller claims SDIO device. */ +static int +mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) +{ + int ret = -1; + + sdio_writeb(func, data, reg, &ret); + return ret; +} + +/* This function writes data into SDIO card register. + */ +static int +mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data) +{ + struct sdio_mmc_card *card = adapter->card; + int ret; + + sdio_claim_host(card->func); + ret = mwifiex_write_reg_locked(card->func, reg, data); + sdio_release_host(card->func); + + return ret; +} + +/* This function reads data from SDIO card register. + */ +static int +mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data) +{ + struct sdio_mmc_card *card = adapter->card; + int ret = -1; + u8 val; + + sdio_claim_host(card->func); + val = sdio_readb(card->func, reg, &ret); + sdio_release_host(card->func); + + *data = val; + + return ret; +} + +/* This function writes multiple data into SDIO card memory. + * + * This does not work in suspended mode. + */ +static int +mwifiex_write_data_sync(struct mwifiex_adapter *adapter, + u8 *buffer, u32 pkt_len, u32 port) +{ + struct sdio_mmc_card *card = adapter->card; + int ret; + u8 blk_mode = + (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; + u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; + u32 blk_cnt = + (blk_mode == + BLOCK_MODE) ? (pkt_len / + MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; + u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); + + if (adapter->is_suspended) { + mwifiex_dbg(adapter, ERROR, + "%s: not allowed while suspended\n", __func__); + return -1; + } + + sdio_claim_host(card->func); + + ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); + + sdio_release_host(card->func); + + return ret; +} + +/* This function reads multiple data from SDIO card memory. + */ +static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, + u32 len, u32 port, u8 claim) +{ + struct sdio_mmc_card *card = adapter->card; + int ret; + u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE + : BLOCK_MODE; + u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; + u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) + : len; + u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); + + if (claim) + sdio_claim_host(card->func); + + ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); + + if (claim) + sdio_release_host(card->func); + + return ret; +} + +/* This function reads the firmware status. + */ +static int +mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) +{ + struct sdio_mmc_card *card = adapter->card; + const struct mwifiex_sdio_card_reg *reg = card->reg; + u8 fws0, fws1; + + if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0)) + return -1; + + if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1)) + return -1; + + *dat = (u16)((fws1 << 8) | fws0); + return 0; +} + +/* This function checks the firmware status in card. + */ +static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, + u32 poll_num) +{ + int ret = 0; + u16 firmware_stat; + u32 tries; + + for (tries = 0; tries < poll_num; tries++) { + ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); + if (ret) + continue; + if (firmware_stat == FIRMWARE_READY_SDIO) { + ret = 0; + break; + } + + msleep(100); + ret = -1; + } + + 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; + + return ret; +} + /* * SDIO remove. * @@ -374,111 +539,6 @@ static struct sdio_driver mwifiex_sdio = { } }; -/* Write data into SDIO card register. Caller claims SDIO device. */ -static int -mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) -{ - int ret = -1; - sdio_writeb(func, data, reg, &ret); - return ret; -} - -/* - * This function writes data into SDIO card register. - */ -static int -mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data) -{ - struct sdio_mmc_card *card = adapter->card; - int ret; - - sdio_claim_host(card->func); - ret = mwifiex_write_reg_locked(card->func, reg, data); - sdio_release_host(card->func); - - return ret; -} - -/* - * This function reads data from SDIO card register. - */ -static int -mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data) -{ - struct sdio_mmc_card *card = adapter->card; - int ret = -1; - u8 val; - - sdio_claim_host(card->func); - val = sdio_readb(card->func, reg, &ret); - sdio_release_host(card->func); - - *data = val; - - return ret; -} - -/* - * This function writes multiple data into SDIO card memory. - * - * This does not work in suspended mode. - */ -static int -mwifiex_write_data_sync(struct mwifiex_adapter *adapter, - u8 *buffer, u32 pkt_len, u32 port) -{ - struct sdio_mmc_card *card = adapter->card; - int ret; - u8 blk_mode = - (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; - u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; - u32 blk_cnt = - (blk_mode == - BLOCK_MODE) ? (pkt_len / - MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; - u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); - - if (adapter->is_suspended) { - mwifiex_dbg(adapter, ERROR, - "%s: not allowed while suspended\n", __func__); - return -1; - } - - sdio_claim_host(card->func); - - ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); - - sdio_release_host(card->func); - - return ret; -} - -/* - * This function reads multiple data from SDIO card memory. - */ -static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, - u32 len, u32 port, u8 claim) -{ - struct sdio_mmc_card *card = adapter->card; - int ret; - u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE - : BLOCK_MODE; - u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; - u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) - : len; - u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); - - if (claim) - sdio_claim_host(card->func); - - ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); - - if (claim) - sdio_release_host(card->func); - - return ret; -} - /* * This function wakes up the card. * @@ -764,27 +824,6 @@ mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) return -1; } -/* - * This function reads the firmware status. - */ -static int -mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) -{ - struct sdio_mmc_card *card = adapter->card; - const struct mwifiex_sdio_card_reg *reg = card->reg; - u8 fws0, fws1; - - if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0)) - return -1; - - if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1)) - return -1; - - *dat = (u16) ((fws1 << 8) | fws0); - - return 0; -} - /* * This function disables the host interrupt. * @@ -1089,51 +1128,6 @@ done: return ret; } -/* - * This function checks the firmware status in card. - */ -static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, - u32 poll_num) -{ - int ret = 0; - u16 firmware_stat; - u32 tries; - - for (tries = 0; tries < poll_num; tries++) { - ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); - if (ret) - continue; - if (firmware_stat == FIRMWARE_READY_SDIO) { - ret = 0; - break; - } else { - msleep(100); - ret = -1; - } - } - - 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; - - return ret; -} - /* * This function decode sdio aggreation pkt. * -- cgit From 045f0c1b5e26818e28a401e623a581dfbd6b371e Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Wed, 30 Nov 2016 20:22:17 +0530 Subject: mwifiex: get rid of global user_rmmod flag bus.remove() callback function is called when user removes this module from kernel space or ejects the card from the slot. The driver handles these 2 cases differently. Few commands (FUNC_SHUTDOWN etc.) are sent to the firmware only for module unload case. The variable 'user_rmmod' is used to distinguish between these two scenarios. This patch checks hardware status and get rid of global variable user_rmmod. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 27 ++++----------------------- 1 file changed, 4 insertions(+), 23 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index ba3bc95a2d35..0b6ed3fab085 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -31,21 +31,6 @@ #define SDIO_VERSION "1.0" -/* The mwifiex_sdio_remove() callback function is called when - * user removes this module from kernel space or ejects - * the card from the slot. The driver handles these 2 cases - * differently. - * If the user is removing the module, the few commands (FUNC_SHUTDOWN, - * HS_CANCEL etc.) are sent to the firmware. - * If the card is removed, there is no need to send these command. - * - * The variable 'user_rmmod' is used to distinguish these two - * scenarios. This flag is initialized as FALSE in case the card - * is removed, and will be set to TRUE for module removal when - * module_exit function is called. - */ -static u8 user_rmmod; - static void mwifiex_sdio_work(struct work_struct *work); static DECLARE_WORK(sdio_work, mwifiex_sdio_work); @@ -391,6 +376,8 @@ __mwifiex_sdio_remove(struct sdio_func *func) struct sdio_mmc_card *card; struct mwifiex_adapter *adapter; struct mwifiex_private *priv; + int ret = 0; + u16 firmware_stat; card = sdio_get_drvdata(func); if (!card) @@ -404,7 +391,8 @@ __mwifiex_sdio_remove(struct sdio_func *func) mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num); - if (user_rmmod && !adapter->mfg_mode) { + ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); + if (firmware_stat == FIRMWARE_READY_SDIO && !adapter->mfg_mode) { mwifiex_deauthenticate_all(adapter); priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); @@ -2724,9 +2712,6 @@ static struct mwifiex_if_ops sdio_ops = { static int mwifiex_sdio_init_module(void) { - /* Clear the flag in case user removes the card. */ - user_rmmod = 0; - return sdio_register_driver(&mwifiex_sdio); } @@ -2742,10 +2727,6 @@ mwifiex_sdio_init_module(void) static void mwifiex_sdio_cleanup_module(void) { - /* Set the flag as user is removing this module. */ - user_rmmod = 1; - cancel_work_sync(&sdio_work); - sdio_unregister_driver(&mwifiex_sdio); } -- cgit From c0e6aa42682311611a7bfa40f7c8a91452eb030f Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Thu, 1 Dec 2016 18:38:20 +0530 Subject: mwifiex: use module_*_driver helper macros After user_rmmod global flag removal, *_init_module() and *_cleanup_module() have become just a wrapper functions. We will get rid of them with the help of module_*_driver() macros. For pcie, existing ".init_if" handler has same name as what module_pcie_driver() macro will create. Let's rename it to avoid conflict. Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 29 +---------------------------- 1 file changed, 1 insertion(+), 28 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 0b6ed3fab085..44eb65acafdd 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -2704,34 +2704,7 @@ static struct mwifiex_if_ops sdio_ops = { .deaggr_pkt = mwifiex_deaggr_sdio_pkt, }; -/* - * This function initializes the SDIO driver. - * - * This registers the device with SDIO bus. - */ -static int -mwifiex_sdio_init_module(void) -{ - return sdio_register_driver(&mwifiex_sdio); -} - -/* - * This function cleans up the SDIO driver. - * - * The following major steps are followed for cleanup - - * - Resume the device if its suspended - * - Disconnect the device if connected - * - Shutdown the firmware - * - Unregister the device from SDIO bus. - */ -static void -mwifiex_sdio_cleanup_module(void) -{ - sdio_unregister_driver(&mwifiex_sdio); -} - -module_init(mwifiex_sdio_init_module); -module_exit(mwifiex_sdio_cleanup_module); +module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver); MODULE_AUTHOR("Marvell International Ltd."); MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); -- cgit From c742e623e9415d3e1e5af00470ae5086fa6dd233 Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Wed, 14 Dec 2016 19:40:49 +0530 Subject: mwifiex: sdio card reset enhancement Commit b4336a282db8 ("mwifiex: sdio: reset adapter using mmc_hw_reset") introduces a simple sdio card reset solution based on card remove and re-probe. This solution has proved to be vulnerable, as card and adapter structures are not protected, concurrent access will result in kernel panic issues. Let's reuse PCIe FLR's functions for SDIO reset to avoid freeing and reallocating adapter and card structures. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 73 +++++++++++++---------------- 1 file changed, 33 insertions(+), 40 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 44eb65acafdd..b3aca10a71f2 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -104,7 +104,6 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) init_completion(&card->fw_done); card->func = func; - card->device_id = id; func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; @@ -2196,33 +2195,13 @@ mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) port, card->mp_data_port_mask); } -static void mwifiex_recreate_adapter(struct sdio_mmc_card *card) +static struct mwifiex_adapter *save_adapter; +static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) { + struct sdio_mmc_card *card = adapter->card; struct sdio_func *func = card->func; - const struct sdio_device_id *device_id = card->device_id; - - /* TODO mmc_hw_reset does not require destroying and re-probing the - * whole adapter. Hence there was no need to for this rube-goldberg - * design to reload the fw from an external workqueue. If we don't - * destroy the adapter we could reload the fw from - * mwifiex_main_work_queue directly. - * The real difficulty with fw reset is to restore all the user - * settings applied through ioctl. By destroying and recreating the - * adapter, we take the easy way out, since we rely on user space to - * restore them. We assume that user space will treat the new - * incarnation of the adapter(interfaces) as if they had been just - * discovered and initializes them from scratch. - */ - __mwifiex_sdio_remove(func); - - /* - * Normally, we would let the driver core take care of releasing these. - * But we're not letting the driver core handle this one. See above - * TODO. - */ - sdio_set_drvdata(func, NULL); - devm_kfree(&func->dev, card); + mwifiex_shutdown_sw(adapter); /* power cycle the adapter */ sdio_claim_host(func); @@ -2235,21 +2214,7 @@ static void mwifiex_recreate_adapter(struct sdio_mmc_card *card) clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags); clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags); - mwifiex_sdio_probe(func, device_id); -} - -static struct mwifiex_adapter *save_adapter; -static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) -{ - struct sdio_mmc_card *card = adapter->card; - - /* TODO card pointer is unprotected. If the adapter is removed - * physically, sdio core might trigger mwifiex_sdio_remove, before this - * workqueue is run, which will destroy the adapter struct. When this - * workqueue eventually exceutes it will dereference an invalid adapter - * pointer - */ - mwifiex_recreate_adapter(card); + mwifiex_reinit_sw(adapter); } /* This function read/write firmware */ @@ -2677,6 +2642,33 @@ mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf) return p - drv_buf; } +/* sdio device/function initialization, code is extracted + * from init_if handler and register_dev handler. + */ +static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter) +{ + struct sdio_mmc_card *card = adapter->card; + u8 sdio_ireg; + + sdio_claim_host(card->func); + sdio_enable_func(card->func); + sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); + sdio_release_host(card->func); + + /* tx_buf_size might be changed to 3584 by firmware during + * data transfer, we will reset to default size. + */ + adapter->tx_buf_size = card->tx_buf_size; + + /* Read the host_int_status_reg for ACK the first interrupt got + * from the bootloader. If we don't do this we get a interrupt + * as soon as we register the irq. + */ + mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); + + mwifiex_init_sdio_ioport(adapter); +} + static struct mwifiex_if_ops sdio_ops = { .init_if = mwifiex_init_sdio, .cleanup_if = mwifiex_cleanup_sdio, @@ -2702,6 +2694,7 @@ static struct mwifiex_if_ops sdio_ops = { .reg_dump = mwifiex_sdio_reg_dump, .device_dump = mwifiex_sdio_device_dump, .deaggr_pkt = mwifiex_deaggr_sdio_pkt, + .up_dev = mwifiex_sdio_up_dev, }; module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver); -- cgit From a7513a4fa9193714b1b02aaa8836af743ccd938d Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Wed, 14 Dec 2016 19:40:50 +0530 Subject: mwifiex: get rid of __mwifiex_sdio_remove helper __mwifiex_sdio_remove helper is not needed after our enhancements in SDIO card reset. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index b3aca10a71f2..0fda87a7441d 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -370,7 +370,7 @@ static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter) * This function removes the interface and frees up the card structure. */ static void -__mwifiex_sdio_remove(struct sdio_func *func) +mwifiex_sdio_remove(struct sdio_func *func) { struct sdio_mmc_card *card; struct mwifiex_adapter *adapter; @@ -388,6 +388,8 @@ __mwifiex_sdio_remove(struct sdio_func *func) if (!adapter || !adapter->priv_num) return; + cancel_work_sync(&sdio_work); + mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num); ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); @@ -402,13 +404,6 @@ __mwifiex_sdio_remove(struct sdio_func *func) mwifiex_remove_card(adapter); } -static void -mwifiex_sdio_remove(struct sdio_func *func) -{ - cancel_work_sync(&sdio_work); - __mwifiex_sdio_remove(func); -} - /* * SDIO suspend. * -- cgit From cc75c577806a53893122829d91cb122b51643a2d Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Wed, 14 Dec 2016 19:40:51 +0530 Subject: mwifiex: get rid of global save_adapter and sdio_work This patch moves sdio_work to card structure, in this way we can get adapter structure in the work, so save_adapter won't be needed. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sdio.c | 39 ++++++++++++++++------------- 1 file changed, 21 insertions(+), 18 deletions(-) (limited to 'drivers/net/wireless/marvell/mwifiex/sdio.c') diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 0fda87a7441d..a4b356d267f9 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -32,10 +32,8 @@ #define SDIO_VERSION "1.0" static void mwifiex_sdio_work(struct work_struct *work); -static DECLARE_WORK(sdio_work, mwifiex_sdio_work); static struct mwifiex_if_ops sdio_ops; -static unsigned long iface_work_flags; static struct memory_type_mapping generic_mem_type_map[] = { {"DUMP", NULL, 0, 0xDD}, @@ -123,6 +121,7 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) card->fw_dump_enh = data->fw_dump_enh; card->can_auto_tdls = data->can_auto_tdls; card->can_ext_scan = data->can_ext_scan; + INIT_WORK(&card->work, mwifiex_sdio_work); } sdio_claim_host(func); @@ -388,7 +387,7 @@ mwifiex_sdio_remove(struct sdio_func *func) if (!adapter || !adapter->priv_num) return; - cancel_work_sync(&sdio_work); + cancel_work_sync(&card->work); mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num); @@ -2190,7 +2189,6 @@ mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) port, card->mp_data_port_mask); } -static struct mwifiex_adapter *save_adapter; static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) { struct sdio_mmc_card *card = adapter->card; @@ -2206,8 +2204,8 @@ static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) /* Previous save_adapter won't be valid after this. We will cancel * pending work requests. */ - clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags); - clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags); + clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); + clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); mwifiex_reinit_sw(adapter); } @@ -2513,35 +2511,40 @@ static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter) static void mwifiex_sdio_work(struct work_struct *work) { + struct sdio_mmc_card *card = + container_of(work, struct sdio_mmc_card, work); + if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, - &iface_work_flags)) - mwifiex_sdio_device_dump_work(save_adapter); + &card->work_flags)) + mwifiex_sdio_device_dump_work(card->adapter); if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, - &iface_work_flags)) - mwifiex_sdio_card_reset_work(save_adapter); + &card->work_flags)) + mwifiex_sdio_card_reset_work(card->adapter); } /* This function resets the card */ static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) { - save_adapter = adapter; - if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags)) + struct sdio_mmc_card *card = adapter->card; + + if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags)) return; - set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags); + set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); - schedule_work(&sdio_work); + schedule_work(&card->work); } /* This function dumps FW information */ static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter) { - save_adapter = adapter; - if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags)) + struct sdio_mmc_card *card = adapter->card; + + if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags)) return; - set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags); - schedule_work(&sdio_work); + set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); + schedule_work(&card->work); } /* Function to dump SDIO function registers and SDIO scratch registers in case -- cgit