2 * linux/drivers/net/wireless/libertas/if_sdio.c
4 * Copyright 2007-2008 Pierre Ossman
6 * Inspired by if_cs.c, Copyright 2007 Holger Schurig
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or (at
11 * your option) any later version.
13 * This hardware has more or less no CMD53 support, so all registers
14 * must be accessed using sdio_readb()/sdio_writeb().
16 * Transfers must be in one transaction or the firmware goes bonkers.
17 * This means that the transfer must either be small enough to do a
18 * byte based transfer or it must be padded to a multiple of the
21 * As SDIO is still new to the kernel, it is unfortunately common with
22 * bugs in the host controllers related to that. One such bug is that
23 * controllers cannot do transfers that aren't a multiple of 4 bytes.
24 * If you don't have time to fix the host controller driver, you can
25 * work around the problem by modifying if_sdio_host_to_card() and
26 * if_sdio_card_to_host() to pad the data.
29 #include <linux/kernel.h>
30 #include <linux/moduleparam.h>
31 #include <linux/slab.h>
32 #include <linux/firmware.h>
33 #include <linux/netdevice.h>
34 #include <linux/delay.h>
35 #include <linux/mmc/card.h>
36 #include <linux/mmc/sdio_func.h>
37 #include <linux/mmc/sdio_ids.h>
38 #include <linux/mmc/sdio.h>
39 #include <linux/mmc/host.h>
48 /* The if_sdio_remove() callback function is called when
49 * user removes this module from kernel space or ejects
50 * the card from the slot. The driver handles these 2 cases
51 * differently for SD8688 combo chip.
52 * If the user is removing the module, the FUNC_SHUTDOWN
53 * command for SD8688 is sent to the firmware.
54 * If the card is removed, there is no need to send this command.
56 * The variable 'user_rmmod' is used to distinguish these two
57 * scenarios. This flag is initialized as FALSE in case the card
58 * is removed, and will be set to TRUE for module removal when
59 * module_exit function is called.
63 static char *lbs_helper_name = NULL;
64 module_param_named(helper_name, lbs_helper_name, charp, 0644);
66 static char *lbs_fw_name = NULL;
67 module_param_named(fw_name, lbs_fw_name, charp, 0644);
69 static const struct sdio_device_id if_sdio_ids[] = {
70 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
71 SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
72 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
73 SDIO_DEVICE_ID_MARVELL_8688WLAN) },
74 { /* end: all zeroes */ },
77 MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
79 struct if_sdio_model {
85 static struct if_sdio_model if_sdio_models[] = {
88 .model = IF_SDIO_MODEL_8385,
89 .helper = "sd8385_helper.bin",
90 .firmware = "sd8385.bin",
94 .model = IF_SDIO_MODEL_8686,
95 .helper = "sd8686_helper.bin",
96 .firmware = "sd8686.bin",
100 .model = IF_SDIO_MODEL_8688,
101 .helper = "sd8688_helper.bin",
102 .firmware = "sd8688.bin",
105 MODULE_FIRMWARE("sd8385_helper.bin");
106 MODULE_FIRMWARE("sd8385.bin");
107 MODULE_FIRMWARE("sd8686_helper.bin");
108 MODULE_FIRMWARE("sd8686.bin");
109 MODULE_FIRMWARE("sd8688_helper.bin");
110 MODULE_FIRMWARE("sd8688.bin");
112 struct if_sdio_packet {
113 struct if_sdio_packet *next;
115 u8 buffer[0] __attribute__((aligned(4)));
118 struct if_sdio_card {
119 struct sdio_func *func;
120 struct lbs_private *priv;
123 unsigned long ioport;
124 unsigned int scratch_reg;
127 const char *firmware;
128 bool helper_allocated;
129 bool firmware_allocated;
134 struct if_sdio_packet *packets;
136 struct workqueue_struct *workqueue;
137 struct work_struct packet_worker;
142 /********************************************************************/
144 /********************************************************************/
147 * For SD8385/SD8686, this function reads firmware status after
148 * the image is downloaded, or reads RX packet length when
149 * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received.
150 * For SD8688, this function reads firmware status only.
152 static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
157 scratch = sdio_readb(card->func, card->scratch_reg, &ret);
159 scratch |= sdio_readb(card->func, card->scratch_reg + 1,
171 static u8 if_sdio_read_rx_unit(struct if_sdio_card *card)
176 rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret);
184 static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err)
189 switch (card->model) {
190 case IF_SDIO_MODEL_8385:
191 case IF_SDIO_MODEL_8686:
192 rx_len = if_sdio_read_scratch(card, &ret);
194 case IF_SDIO_MODEL_8688:
195 default: /* for newer chipsets */
196 rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret);
198 rx_len <<= card->rx_unit;
200 rx_len = 0xffff; /* invalid length */
211 static int if_sdio_handle_cmd(struct if_sdio_card *card,
212 u8 *buffer, unsigned size)
214 struct lbs_private *priv = card->priv;
219 lbs_deb_enter(LBS_DEB_SDIO);
221 if (size > LBS_CMD_BUFFER_SIZE) {
222 lbs_deb_sdio("response packet too large (%d bytes)\n",
228 spin_lock_irqsave(&priv->driver_lock, flags);
230 i = (priv->resp_idx == 0) ? 1 : 0;
231 BUG_ON(priv->resp_len[i]);
232 priv->resp_len[i] = size;
233 memcpy(priv->resp_buf[i], buffer, size);
234 lbs_notify_command_response(priv, i);
236 spin_unlock_irqrestore(&card->priv->driver_lock, flags);
241 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
245 static int if_sdio_handle_data(struct if_sdio_card *card,
246 u8 *buffer, unsigned size)
252 lbs_deb_enter(LBS_DEB_SDIO);
254 if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
255 lbs_deb_sdio("response packet too large (%d bytes)\n",
261 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
267 skb_reserve(skb, NET_IP_ALIGN);
269 data = skb_put(skb, size);
271 memcpy(data, buffer, size);
273 lbs_process_rxed_packet(card->priv, skb);
278 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
283 static int if_sdio_handle_event(struct if_sdio_card *card,
284 u8 *buffer, unsigned size)
289 lbs_deb_enter(LBS_DEB_SDIO);
291 if (card->model == IF_SDIO_MODEL_8385) {
292 event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
296 /* right shift 3 bits to get the event id */
300 lbs_deb_sdio("event packet too small (%d bytes)\n",
305 event = buffer[3] << 24;
306 event |= buffer[2] << 16;
307 event |= buffer[1] << 8;
308 event |= buffer[0] << 0;
311 lbs_queue_event(card->priv, event & 0xFF);
315 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
320 static int if_sdio_wait_status(struct if_sdio_card *card, const u8 condition)
323 unsigned long timeout;
326 timeout = jiffies + HZ;
328 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
331 if ((status & condition) == condition)
333 if (time_after(jiffies, timeout))
340 static int if_sdio_card_to_host(struct if_sdio_card *card)
343 u16 size, type, chunk;
345 lbs_deb_enter(LBS_DEB_SDIO);
347 size = if_sdio_read_rx_len(card, &ret);
352 lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
358 ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY);
363 * The transfer must be in one transaction or the firmware
364 * goes suicidal. There's no way to guarantee that for all
365 * controllers, but we can at least try.
367 chunk = sdio_align_size(card->func, size);
369 ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
373 chunk = card->buffer[0] | (card->buffer[1] << 8);
374 type = card->buffer[2] | (card->buffer[3] << 8);
376 lbs_deb_sdio("packet of type %d and size %d bytes\n",
377 (int)type, (int)chunk);
380 lbs_deb_sdio("packet fragment (%d > %d)\n",
381 (int)chunk, (int)size);
387 lbs_deb_sdio("packet fragment (%d < %d)\n",
388 (int)chunk, (int)size);
393 ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
398 ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
403 ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
408 lbs_deb_sdio("invalid type (%d) from firmware\n",
416 lbs_pr_err("problem fetching packet from firmware\n");
418 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
423 static void if_sdio_host_to_card_worker(struct work_struct *work)
425 struct if_sdio_card *card;
426 struct if_sdio_packet *packet;
430 lbs_deb_enter(LBS_DEB_SDIO);
432 card = container_of(work, struct if_sdio_card, packet_worker);
435 spin_lock_irqsave(&card->lock, flags);
436 packet = card->packets;
438 card->packets = packet->next;
439 spin_unlock_irqrestore(&card->lock, flags);
444 sdio_claim_host(card->func);
446 ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY);
448 ret = sdio_writesb(card->func, card->ioport,
449 packet->buffer, packet->nb);
453 lbs_pr_err("error %d sending packet to firmware\n", ret);
455 sdio_release_host(card->func);
460 lbs_deb_leave(LBS_DEB_SDIO);
463 /********************************************************************/
465 /********************************************************************/
467 #define FW_DL_READY_STATUS (IF_SDIO_IO_RDY | IF_SDIO_DL_RDY)
469 static int if_sdio_prog_helper(struct if_sdio_card *card)
472 const struct firmware *fw;
473 unsigned long timeout;
479 lbs_deb_enter(LBS_DEB_SDIO);
481 ret = request_firmware(&fw, card->helper, &card->func->dev);
483 lbs_pr_err("can't load helper firmware\n");
487 chunk_buffer = kzalloc(64, GFP_KERNEL);
493 sdio_claim_host(card->func);
495 ret = sdio_set_block_size(card->func, 32);
503 ret = if_sdio_wait_status(card, FW_DL_READY_STATUS);
507 /* On some platforms (like Davinci) the chip needs more time
508 * between helper blocks.
512 chunk_size = min(size, (size_t)60);
514 *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
515 memcpy(chunk_buffer + 4, firmware, chunk_size);
517 lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
519 ret = sdio_writesb(card->func, card->ioport,
524 firmware += chunk_size;
528 /* an empty block marks the end of the transfer */
529 memset(chunk_buffer, 0, 4);
530 ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
534 lbs_deb_sdio("waiting for helper to boot...\n");
536 /* wait for the helper to boot by looking at the size register */
537 timeout = jiffies + HZ;
541 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
545 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
552 if (time_after(jiffies, timeout)) {
563 sdio_release_host(card->func);
566 release_firmware(fw);
570 lbs_pr_err("failed to load helper firmware\n");
572 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
577 static int if_sdio_prog_real(struct if_sdio_card *card)
580 const struct firmware *fw;
581 unsigned long timeout;
585 size_t size, req_size;
587 lbs_deb_enter(LBS_DEB_SDIO);
589 ret = request_firmware(&fw, card->firmware, &card->func->dev);
591 lbs_pr_err("can't load firmware\n");
595 chunk_buffer = kzalloc(512, GFP_KERNEL);
601 sdio_claim_host(card->func);
603 ret = sdio_set_block_size(card->func, 32);
611 ret = if_sdio_wait_status(card, FW_DL_READY_STATUS);
615 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
619 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
623 lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
626 lbs_deb_sdio("firmware helper gave up early\n");
631 if (req_size & 0x01) {
632 lbs_deb_sdio("firmware helper signalled error\n");
641 chunk_size = min(req_size, (size_t)512);
643 memcpy(chunk_buffer, firmware, chunk_size);
645 lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
646 chunk_size, (chunk_size + 31) / 32 * 32);
648 ret = sdio_writesb(card->func, card->ioport,
649 chunk_buffer, roundup(chunk_size, 32));
653 firmware += chunk_size;
655 req_size -= chunk_size;
661 lbs_deb_sdio("waiting for firmware to boot...\n");
663 /* wait for the firmware to boot */
664 timeout = jiffies + HZ;
668 scratch = if_sdio_read_scratch(card, &ret);
672 if (scratch == IF_SDIO_FIRMWARE_OK)
675 if (time_after(jiffies, timeout)) {
686 sdio_release_host(card->func);
689 release_firmware(fw);
693 lbs_pr_err("failed to load firmware\n");
695 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
700 static int if_sdio_prog_firmware(struct if_sdio_card *card)
705 lbs_deb_enter(LBS_DEB_SDIO);
707 sdio_claim_host(card->func);
708 scratch = if_sdio_read_scratch(card, &ret);
709 sdio_release_host(card->func);
714 lbs_deb_sdio("firmware status = %#x\n", scratch);
716 if (scratch == IF_SDIO_FIRMWARE_OK) {
717 lbs_deb_sdio("firmware already loaded\n");
721 ret = if_sdio_prog_helper(card);
725 ret = if_sdio_prog_real(card);
730 sdio_claim_host(card->func);
731 sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
732 sdio_release_host(card->func);
736 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
741 /*******************************************************************/
742 /* Libertas callbacks */
743 /*******************************************************************/
745 static int if_sdio_host_to_card(struct lbs_private *priv,
746 u8 type, u8 *buf, u16 nb)
749 struct if_sdio_card *card;
750 struct if_sdio_packet *packet, *cur;
754 lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
758 if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
764 * The transfer must be in one transaction or the firmware
765 * goes suicidal. There's no way to guarantee that for all
766 * controllers, but we can at least try.
768 size = sdio_align_size(card->func, nb + 4);
770 packet = kzalloc(sizeof(struct if_sdio_packet) + size,
781 * SDIO specific header.
783 packet->buffer[0] = (nb + 4) & 0xff;
784 packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
785 packet->buffer[2] = type;
786 packet->buffer[3] = 0;
788 memcpy(packet->buffer + 4, buf, nb);
790 spin_lock_irqsave(&card->lock, flags);
793 card->packets = packet;
803 priv->dnld_sent = DNLD_CMD_SENT;
806 priv->dnld_sent = DNLD_DATA_SENT;
809 lbs_deb_sdio("unknown packet type %d\n", (int)type);
812 spin_unlock_irqrestore(&card->lock, flags);
814 queue_work(card->workqueue, &card->packet_worker);
819 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
824 static int if_sdio_enter_deep_sleep(struct lbs_private *priv)
827 struct cmd_header cmd;
829 memset(&cmd, 0, sizeof(cmd));
831 lbs_deb_sdio("send DEEP_SLEEP command\n");
832 ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd),
833 lbs_cmd_copyback, (unsigned long) &cmd);
835 lbs_pr_err("DEEP_SLEEP cmd failed\n");
841 static int if_sdio_exit_deep_sleep(struct lbs_private *priv)
843 struct if_sdio_card *card = priv->card;
846 lbs_deb_enter(LBS_DEB_SDIO);
847 sdio_claim_host(card->func);
849 sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret);
851 lbs_pr_err("sdio_writeb failed!\n");
853 sdio_release_host(card->func);
854 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
858 static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv)
860 struct if_sdio_card *card = priv->card;
863 lbs_deb_enter(LBS_DEB_SDIO);
864 sdio_claim_host(card->func);
866 sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret);
868 lbs_pr_err("sdio_writeb failed!\n");
870 sdio_release_host(card->func);
871 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
876 /*******************************************************************/
878 /*******************************************************************/
880 static void if_sdio_interrupt(struct sdio_func *func)
883 struct if_sdio_card *card;
886 lbs_deb_enter(LBS_DEB_SDIO);
888 card = sdio_get_drvdata(func);
890 cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
894 lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
896 sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
901 * Ignore the define name, this really means the card has
902 * successfully received the command.
904 card->priv->is_activity_detected = 1;
905 if (cause & IF_SDIO_H_INT_DNLD)
906 lbs_host_to_card_done(card->priv);
909 if (cause & IF_SDIO_H_INT_UPLD) {
910 ret = if_sdio_card_to_host(card);
918 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
921 static int if_sdio_probe(struct sdio_func *func,
922 const struct sdio_device_id *id)
924 struct if_sdio_card *card;
925 struct lbs_private *priv;
928 struct if_sdio_packet *packet;
929 struct mmc_host *host = func->card->host;
931 lbs_deb_enter(LBS_DEB_SDIO);
933 for (i = 0;i < func->card->num_info;i++) {
934 if (sscanf(func->card->info[i],
935 "802.11 SDIO ID: %x", &model) == 1)
937 if (sscanf(func->card->info[i],
938 "ID: %x", &model) == 1)
940 if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
941 model = IF_SDIO_MODEL_8385;
946 if (i == func->card->num_info) {
947 lbs_pr_err("unable to identify card model\n");
951 card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
958 switch (card->model) {
959 case IF_SDIO_MODEL_8385:
960 card->scratch_reg = IF_SDIO_SCRATCH_OLD;
962 case IF_SDIO_MODEL_8686:
963 card->scratch_reg = IF_SDIO_SCRATCH;
965 case IF_SDIO_MODEL_8688:
966 default: /* for newer chipsets */
967 card->scratch_reg = IF_SDIO_FW_STATUS;
971 spin_lock_init(&card->lock);
972 card->workqueue = create_workqueue("libertas_sdio");
973 INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
975 for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
976 if (card->model == if_sdio_models[i].model)
980 if (i == ARRAY_SIZE(if_sdio_models)) {
981 lbs_pr_err("unknown card model 0x%x\n", card->model);
986 card->helper = if_sdio_models[i].helper;
987 card->firmware = if_sdio_models[i].firmware;
989 kparam_block_sysfs_write(helper_name);
990 if (lbs_helper_name) {
991 char *helper = kstrdup(lbs_helper_name, GFP_KERNEL);
993 kparam_unblock_sysfs_write(helper_name);
997 lbs_deb_sdio("overriding helper firmware: %s\n",
999 card->helper = helper;
1000 card->helper_allocated = true;
1002 kparam_unblock_sysfs_write(helper_name);
1004 kparam_block_sysfs_write(fw_name);
1006 char *fw_name = kstrdup(lbs_fw_name, GFP_KERNEL);
1008 kparam_unblock_sysfs_write(fw_name);
1012 lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
1013 card->firmware = fw_name;
1014 card->firmware_allocated = true;
1016 kparam_unblock_sysfs_write(fw_name);
1018 sdio_claim_host(func);
1020 ret = sdio_enable_func(func);
1024 ret = sdio_claim_irq(func, if_sdio_interrupt);
1028 /* For 1-bit transfers to the 8686 model, we need to enable the
1029 * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0
1030 * bit to allow access to non-vendor registers. */
1031 if ((card->model == IF_SDIO_MODEL_8686) &&
1032 (host->caps & MMC_CAP_SDIO_IRQ) &&
1033 (host->ios.bus_width == MMC_BUS_WIDTH_1)) {
1036 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
1037 reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret);
1041 reg |= SDIO_BUS_ECSI;
1042 sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret);
1047 card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
1051 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
1055 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
1059 sdio_release_host(func);
1061 sdio_set_drvdata(func, card);
1063 lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
1064 "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
1065 func->class, func->vendor, func->device,
1066 model, (unsigned)card->ioport);
1068 ret = if_sdio_prog_firmware(card);
1072 priv = lbs_add_card(card, &func->dev);
1081 priv->hw_host_to_card = if_sdio_host_to_card;
1082 priv->enter_deep_sleep = if_sdio_enter_deep_sleep;
1083 priv->exit_deep_sleep = if_sdio_exit_deep_sleep;
1084 priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup;
1088 sdio_claim_host(func);
1091 * Get rx_unit if the chip is SD8688 or newer.
1092 * SD8385 & SD8686 do not have rx_unit.
1094 if ((card->model != IF_SDIO_MODEL_8385)
1095 && (card->model != IF_SDIO_MODEL_8686))
1096 card->rx_unit = if_sdio_read_rx_unit(card);
1101 * Enable interrupts now that everything is set up
1103 sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
1104 sdio_release_host(func);
1109 * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
1111 if (card->model == IF_SDIO_MODEL_8688) {
1112 struct cmd_header cmd;
1114 memset(&cmd, 0, sizeof(cmd));
1116 lbs_deb_sdio("send function INIT command\n");
1117 if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd),
1118 lbs_cmd_copyback, (unsigned long) &cmd))
1119 lbs_pr_alert("CMD_FUNC_INIT cmd failed\n");
1122 ret = lbs_start_card(priv);
1124 goto err_activate_card;
1127 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1132 flush_workqueue(card->workqueue);
1133 lbs_remove_card(priv);
1135 sdio_claim_host(func);
1137 sdio_release_irq(func);
1139 sdio_disable_func(func);
1141 sdio_release_host(func);
1143 destroy_workqueue(card->workqueue);
1144 while (card->packets) {
1145 packet = card->packets;
1146 card->packets = card->packets->next;
1150 if (card->helper_allocated)
1151 kfree(card->helper);
1152 if (card->firmware_allocated)
1153 kfree(card->firmware);
1159 static void if_sdio_remove(struct sdio_func *func)
1161 struct if_sdio_card *card;
1162 struct if_sdio_packet *packet;
1164 lbs_deb_enter(LBS_DEB_SDIO);
1166 card = sdio_get_drvdata(func);
1168 if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) {
1170 * FUNC_SHUTDOWN is required for SD8688 WLAN/BT
1171 * multiple functions
1173 struct cmd_header cmd;
1175 memset(&cmd, 0, sizeof(cmd));
1177 lbs_deb_sdio("send function SHUTDOWN command\n");
1178 if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN,
1179 &cmd, sizeof(cmd), lbs_cmd_copyback,
1180 (unsigned long) &cmd))
1181 lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n");
1185 lbs_deb_sdio("call remove card\n");
1186 lbs_stop_card(card->priv);
1187 lbs_remove_card(card->priv);
1188 card->priv->surpriseremoved = 1;
1190 flush_workqueue(card->workqueue);
1191 destroy_workqueue(card->workqueue);
1193 sdio_claim_host(func);
1194 sdio_release_irq(func);
1195 sdio_disable_func(func);
1196 sdio_release_host(func);
1198 while (card->packets) {
1199 packet = card->packets;
1200 card->packets = card->packets->next;
1204 if (card->helper_allocated)
1205 kfree(card->helper);
1206 if (card->firmware_allocated)
1207 kfree(card->firmware);
1210 lbs_deb_leave(LBS_DEB_SDIO);
1213 static int if_sdio_suspend(struct device *dev)
1215 struct sdio_func *func = dev_to_sdio_func(dev);
1217 struct if_sdio_card *card = sdio_get_drvdata(func);
1219 mmc_pm_flag_t flags = sdio_get_host_pm_caps(func);
1221 lbs_pr_info("%s: suspend: PM flags = 0x%x\n",
1222 sdio_func_id(func), flags);
1224 /* If we aren't being asked to wake on anything, we should bail out
1225 * and let the SD stack power down the card.
1227 if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) {
1228 lbs_pr_info("Suspend without wake params -- "
1229 "powering down card.");
1233 if (!(flags & MMC_PM_KEEP_POWER)) {
1234 lbs_pr_err("%s: cannot remain alive while host is suspended\n",
1235 sdio_func_id(func));
1239 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1243 ret = lbs_suspend(card->priv);
1247 return sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ);
1250 static int if_sdio_resume(struct device *dev)
1252 struct sdio_func *func = dev_to_sdio_func(dev);
1253 struct if_sdio_card *card = sdio_get_drvdata(func);
1256 lbs_pr_info("%s: resume: we're back\n", sdio_func_id(func));
1258 ret = lbs_resume(card->priv);
1263 static const struct dev_pm_ops if_sdio_pm_ops = {
1264 .suspend = if_sdio_suspend,
1265 .resume = if_sdio_resume,
1268 static struct sdio_driver if_sdio_driver = {
1269 .name = "libertas_sdio",
1270 .id_table = if_sdio_ids,
1271 .probe = if_sdio_probe,
1272 .remove = if_sdio_remove,
1274 .pm = &if_sdio_pm_ops,
1278 /*******************************************************************/
1279 /* Module functions */
1280 /*******************************************************************/
1282 static int __init if_sdio_init_module(void)
1286 lbs_deb_enter(LBS_DEB_SDIO);
1288 printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
1289 printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
1291 ret = sdio_register_driver(&if_sdio_driver);
1293 /* Clear the flag in case user removes the card. */
1296 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1301 static void __exit if_sdio_exit_module(void)
1303 lbs_deb_enter(LBS_DEB_SDIO);
1305 /* Set the flag as user is removing this module. */
1308 sdio_unregister_driver(&if_sdio_driver);
1310 lbs_deb_leave(LBS_DEB_SDIO);
1313 module_init(if_sdio_init_module);
1314 module_exit(if_sdio_exit_module);
1316 MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
1317 MODULE_AUTHOR("Pierre Ossman");
1318 MODULE_LICENSE("GPL");