diff options
author | Bing Zhao <bzhao@marvell.com> | 2009-06-02 01:04:36 (GMT) |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2009-06-03 18:05:16 (GMT) |
commit | 6bc61f4d8e2fa3d54017c29b58603e8771158a25 (patch) | |
tree | a527be05a193d1ef4b223322b4af6d83c69f64cb | |
parent | 328d84fb3614d006254c990a6224ce437147a5ac (diff) | |
download | linux-fsl-qoriq-6bc61f4d8e2fa3d54017c29b58603e8771158a25.tar.xz |
libertas: improve function init/shutdown handling for SD8688
This patch is to incorporate Dan Williams' comments for commit:
"libertas: implement function init/shutdown commands for SD8688"
1. remove fn_init_required and fn_shutdown_required variables from
lbs_private structure. If required, __lbs_cmd() will be called
directly to send function init/shutdown command for SD8688 in
if_sdio_probe() or if_sdio_remove() callback.
2. add global variable "user_rmmod" to distinguish between the module
removal case and the card removal case. This flag will be checked in
if_sdio_remove() against SD8688 card to determine whether or not the
function shutdown command needs to be sent.
3. remove "card" from if_sdio_model structure as it cannot store
card pointers for multiple cards. Besides, it's no longer needed
to store the "card" pointer with changes #1 & #2 above.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r-- | drivers/net/wireless/libertas/dev.h | 2 | ||||
-rw-r--r-- | drivers/net/wireless/libertas/if_sdio.c | 76 | ||||
-rw-r--r-- | drivers/net/wireless/libertas/main.c | 20 |
3 files changed, 47 insertions, 51 deletions
diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h index 9e11f90..f9ec69e 100644 --- a/drivers/net/wireless/libertas/dev.h +++ b/drivers/net/wireless/libertas/dev.h @@ -321,8 +321,6 @@ struct lbs_private { u32 monitormode; u8 fw_ready; - u8 fn_init_required; - u8 fn_shutdown_required; }; extern struct cmd_confirm_sleep confirm_sleep; diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c index a7e3fc1..8cdb88c 100644 --- a/drivers/net/wireless/libertas/if_sdio.c +++ b/drivers/net/wireless/libertas/if_sdio.c @@ -39,8 +39,24 @@ #include "decl.h" #include "defs.h" #include "dev.h" +#include "cmd.h" #include "if_sdio.h" +/* The if_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 for SD8688 combo chip. + * If the user is removing the module, the FUNC_SHUTDOWN + * command for SD8688 is sent to the firmware. + * If the card is removed, there is no need to send this 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 char *lbs_helper_name = NULL; module_param_named(helper_name, lbs_helper_name, charp, 0644); @@ -61,7 +77,6 @@ struct if_sdio_model { int model; const char *helper; const char *firmware; - struct if_sdio_card *card; }; static struct if_sdio_model if_sdio_models[] = { @@ -70,21 +85,18 @@ static struct if_sdio_model if_sdio_models[] = { .model = IF_SDIO_MODEL_8385, .helper = "sd8385_helper.bin", .firmware = "sd8385.bin", - .card = NULL, }, { /* 8686 */ .model = IF_SDIO_MODEL_8686, .helper = "sd8686_helper.bin", .firmware = "sd8686.bin", - .card = NULL, }, { /* 8688 */ .model = IF_SDIO_MODEL_8688, .helper = "sd8688_helper.bin", .firmware = "sd8688.bin", - .card = NULL, }, }; @@ -927,8 +939,6 @@ static int if_sdio_probe(struct sdio_func *func, goto free; } - if_sdio_models[i].card = card; - card->helper = if_sdio_models[i].helper; card->firmware = if_sdio_models[i].firmware; @@ -1014,8 +1024,16 @@ static int if_sdio_probe(struct sdio_func *func, /* * FUNC_INIT is required for SD8688 WLAN/BT multiple functions */ - priv->fn_init_required = - (card->model == IF_SDIO_MODEL_8688) ? 1 : 0; + if (card->model == IF_SDIO_MODEL_8688) { + struct cmd_header cmd; + + memset(&cmd, 0, sizeof(cmd)); + + lbs_deb_sdio("send function INIT command\n"); + if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), + lbs_cmd_copyback, (unsigned long) &cmd)) + lbs_pr_alert("CMD_FUNC_INIT cmd failed\n"); + } ret = lbs_start_card(priv); if (ret) @@ -1057,30 +1075,39 @@ static void if_sdio_remove(struct sdio_func *func) { struct if_sdio_card *card; struct if_sdio_packet *packet; - int ret; lbs_deb_enter(LBS_DEB_SDIO); card = sdio_get_drvdata(func); - lbs_stop_card(card->priv); + if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) { + /* + * FUNC_SHUTDOWN is required for SD8688 WLAN/BT + * multiple functions + */ + struct cmd_header cmd; + + memset(&cmd, 0, sizeof(cmd)); + + lbs_deb_sdio("send function SHUTDOWN command\n"); + if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, + &cmd, sizeof(cmd), lbs_cmd_copyback, + (unsigned long) &cmd)) + lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); + } card->priv->surpriseremoved = 1; lbs_deb_sdio("call remove card\n"); + lbs_stop_card(card->priv); lbs_remove_card(card->priv); flush_workqueue(card->workqueue); destroy_workqueue(card->workqueue); sdio_claim_host(func); - - /* Disable interrupts */ - sdio_writeb(func, 0x00, IF_SDIO_H_INT_MASK, &ret); - sdio_release_irq(func); sdio_disable_func(func); - sdio_release_host(func); while (card->packets) { @@ -1116,6 +1143,9 @@ static int __init if_sdio_init_module(void) ret = sdio_register_driver(&if_sdio_driver); + /* Clear the flag in case user removes the card. */ + user_rmmod = 0; + lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); return ret; @@ -1123,22 +1153,10 @@ static int __init if_sdio_init_module(void) static void __exit if_sdio_exit_module(void) { - int i; - struct if_sdio_card *card; - lbs_deb_enter(LBS_DEB_SDIO); - for (i = 0; i < ARRAY_SIZE(if_sdio_models); i++) { - card = if_sdio_models[i].card; - - /* - * FUNC_SHUTDOWN is required for SD8688 WLAN/BT - * multiple functions - */ - if (card && card->priv) - card->priv->fn_shutdown_required = - (card->model == IF_SDIO_MODEL_8688) ? 1 : 0; - } + /* Set the flag as user is removing this module. */ + user_rmmod = 1; sdio_unregister_driver(&if_sdio_driver); diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c index a58a123..89575e4 100644 --- a/drivers/net/wireless/libertas/main.c +++ b/drivers/net/wireless/libertas/main.c @@ -1002,17 +1002,9 @@ static int lbs_setup_firmware(struct lbs_private *priv) { int ret = -1; s16 curlevel = 0, minlevel = 0, maxlevel = 0; - struct cmd_header cmd; lbs_deb_enter(LBS_DEB_FW); - if (priv->fn_init_required) { - memset(&cmd, 0, sizeof(cmd)); - if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), - lbs_cmd_copyback, (unsigned long) &cmd)) - lbs_pr_alert("CMD_FUNC_INIT command failed\n"); - } - /* Read MAC address from firmware */ memset(priv->current_addr, 0xff, ETH_ALEN); ret = lbs_update_hw_spec(priv); @@ -1200,9 +1192,6 @@ struct lbs_private *lbs_add_card(void *card, struct device *dmdev) priv->mesh_open = 0; priv->infra_open = 0; - priv->fn_init_required = 0; - priv->fn_shutdown_required = 0; - /* Setup the OS Interface to our functions */ dev->netdev_ops = &lbs_netdev_ops; dev->watchdog_timeo = 5 * HZ; @@ -1384,20 +1373,11 @@ void lbs_stop_card(struct lbs_private *priv) struct net_device *dev; struct cmd_ctrl_node *cmdnode; unsigned long flags; - struct cmd_header cmd; lbs_deb_enter(LBS_DEB_MAIN); if (!priv) goto out; - - if (priv->fn_shutdown_required) { - memset(&cmd, 0, sizeof(cmd)); - if (__lbs_cmd(priv, CMD_FUNC_SHUTDOWN, &cmd, sizeof(cmd), - lbs_cmd_copyback, (unsigned long) &cmd)) - lbs_pr_alert("CMD_FUNC_SHUTDOWN command failed\n"); - } - dev = priv->dev; netif_stop_queue(dev); |