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/firmware.h>
32 #include <linux/netdevice.h>
33 #include <linux/delay.h>
34 #include <linux/mmc/card.h>
35 #include <linux/mmc/sdio_func.h>
36 #include <linux/mmc/sdio_ids.h>
45 /* The if_sdio_remove() callback function is called when
46 * user removes this module from kernel space or ejects
47 * the card from the slot. The driver handles these 2 cases
48 * differently for SD8688 combo chip.
49 * If the user is removing the module, the FUNC_SHUTDOWN
50 * command for SD8688 is sent to the firmware.
51 * If the card is removed, there is no need to send this command.
53 * The variable 'user_rmmod' is used to distinguish these two
54 * scenarios. This flag is initialized as FALSE in case the card
55 * is removed, and will be set to TRUE for module removal when
56 * module_exit function is called.
60 static char *lbs_helper_name = NULL;
61 module_param_named(helper_name, lbs_helper_name, charp, 0644);
63 static char *lbs_fw_name = NULL;
64 module_param_named(fw_name, lbs_fw_name, charp, 0644);
66 static const struct sdio_device_id if_sdio_ids[] = {
67 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
68 SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
69 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
70 SDIO_DEVICE_ID_MARVELL_8688WLAN) },
71 { /* end: all zeroes */ },
74 MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
76 struct if_sdio_model {
82 static struct if_sdio_model if_sdio_models[] = {
85 .model = IF_SDIO_MODEL_8385,
86 .helper = "sd8385_helper.bin",
87 .firmware = "sd8385.bin",
91 .model = IF_SDIO_MODEL_8686,
92 .helper = "sd8686_helper.bin",
93 .firmware = "sd8686.bin",
97 .model = IF_SDIO_MODEL_8688,
98 .helper = "sd8688_helper.bin",
99 .firmware = "sd8688.bin",
102 MODULE_FIRMWARE("sd8385_helper.bin");
103 MODULE_FIRMWARE("sd8385.bin");
104 MODULE_FIRMWARE("sd8686_helper.bin");
105 MODULE_FIRMWARE("sd8686.bin");
106 MODULE_FIRMWARE("sd8688_helper.bin");
107 MODULE_FIRMWARE("sd8688.bin");
109 struct if_sdio_packet {
110 struct if_sdio_packet *next;
112 u8 buffer[0] __attribute__((aligned(4)));
115 struct if_sdio_card {
116 struct sdio_func *func;
117 struct lbs_private *priv;
120 unsigned long ioport;
121 unsigned int scratch_reg;
124 const char *firmware;
129 struct if_sdio_packet *packets;
131 struct workqueue_struct *workqueue;
132 struct work_struct packet_worker;
137 /********************************************************************/
139 /********************************************************************/
142 * For SD8385/SD8686, this function reads firmware status after
143 * the image is downloaded, or reads RX packet length when
144 * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received.
145 * For SD8688, this function reads firmware status only.
147 static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
152 scratch = sdio_readb(card->func, card->scratch_reg, &ret);
154 scratch |= sdio_readb(card->func, card->scratch_reg + 1,
166 static u8 if_sdio_read_rx_unit(struct if_sdio_card *card)
171 rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret);
179 static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err)
184 switch (card->model) {
185 case IF_SDIO_MODEL_8385:
186 case IF_SDIO_MODEL_8686:
187 rx_len = if_sdio_read_scratch(card, &ret);
189 case IF_SDIO_MODEL_8688:
190 default: /* for newer chipsets */
191 rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret);
193 rx_len <<= card->rx_unit;
195 rx_len = 0xffff; /* invalid length */
206 static int if_sdio_handle_cmd(struct if_sdio_card *card,
207 u8 *buffer, unsigned size)
209 struct lbs_private *priv = card->priv;
214 lbs_deb_enter(LBS_DEB_SDIO);
216 if (size > LBS_CMD_BUFFER_SIZE) {
217 lbs_deb_sdio("response packet too large (%d bytes)\n",
223 spin_lock_irqsave(&priv->driver_lock, flags);
225 i = (priv->resp_idx == 0) ? 1 : 0;
226 BUG_ON(priv->resp_len[i]);
227 priv->resp_len[i] = size;
228 memcpy(priv->resp_buf[i], buffer, size);
229 lbs_notify_command_response(priv, i);
231 spin_unlock_irqrestore(&card->priv->driver_lock, flags);
236 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
240 static int if_sdio_handle_data(struct if_sdio_card *card,
241 u8 *buffer, unsigned size)
247 lbs_deb_enter(LBS_DEB_SDIO);
249 if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
250 lbs_deb_sdio("response packet too large (%d bytes)\n",
256 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
262 skb_reserve(skb, NET_IP_ALIGN);
264 data = skb_put(skb, size);
266 memcpy(data, buffer, size);
268 lbs_process_rxed_packet(card->priv, skb);
273 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
278 static int if_sdio_handle_event(struct if_sdio_card *card,
279 u8 *buffer, unsigned size)
284 lbs_deb_enter(LBS_DEB_SDIO);
286 if (card->model == IF_SDIO_MODEL_8385) {
287 event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
291 /* right shift 3 bits to get the event id */
295 lbs_deb_sdio("event packet too small (%d bytes)\n",
300 event = buffer[3] << 24;
301 event |= buffer[2] << 16;
302 event |= buffer[1] << 8;
303 event |= buffer[0] << 0;
306 lbs_queue_event(card->priv, event & 0xFF);
310 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
315 static int if_sdio_card_to_host(struct if_sdio_card *card)
319 u16 size, type, chunk;
320 unsigned long timeout;
322 lbs_deb_enter(LBS_DEB_SDIO);
324 size = if_sdio_read_rx_len(card, &ret);
329 lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
335 timeout = jiffies + HZ;
337 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
340 if (status & IF_SDIO_IO_RDY)
342 if (time_after(jiffies, timeout)) {
350 * The transfer must be in one transaction or the firmware
351 * goes suicidal. There's no way to guarantee that for all
352 * controllers, but we can at least try.
354 chunk = sdio_align_size(card->func, size);
356 ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
360 chunk = card->buffer[0] | (card->buffer[1] << 8);
361 type = card->buffer[2] | (card->buffer[3] << 8);
363 lbs_deb_sdio("packet of type %d and size %d bytes\n",
364 (int)type, (int)chunk);
367 lbs_deb_sdio("packet fragment (%d > %d)\n",
368 (int)chunk, (int)size);
374 lbs_deb_sdio("packet fragment (%d < %d)\n",
375 (int)chunk, (int)size);
380 ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
385 ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
390 ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
395 lbs_deb_sdio("invalid type (%d) from firmware\n",
403 lbs_pr_err("problem fetching packet from firmware\n");
405 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
410 static void if_sdio_host_to_card_worker(struct work_struct *work)
412 struct if_sdio_card *card;
413 struct if_sdio_packet *packet;
414 unsigned long timeout;
419 lbs_deb_enter(LBS_DEB_SDIO);
421 card = container_of(work, struct if_sdio_card, packet_worker);
424 spin_lock_irqsave(&card->lock, flags);
425 packet = card->packets;
427 card->packets = packet->next;
428 spin_unlock_irqrestore(&card->lock, flags);
433 sdio_claim_host(card->func);
435 timeout = jiffies + HZ;
437 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
440 if (status & IF_SDIO_IO_RDY)
442 if (time_after(jiffies, timeout)) {
449 ret = sdio_writesb(card->func, card->ioport,
450 packet->buffer, packet->nb);
454 sdio_release_host(card->func);
459 lbs_deb_leave(LBS_DEB_SDIO);
462 /********************************************************************/
464 /********************************************************************/
466 static int if_sdio_prog_helper(struct if_sdio_card *card)
470 const struct firmware *fw;
471 unsigned long timeout;
477 lbs_deb_enter(LBS_DEB_SDIO);
479 ret = request_firmware(&fw, card->helper, &card->func->dev);
481 lbs_pr_err("can't load helper firmware\n");
485 chunk_buffer = kzalloc(64, GFP_KERNEL);
491 sdio_claim_host(card->func);
493 ret = sdio_set_block_size(card->func, 32);
501 timeout = jiffies + HZ;
503 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
506 if ((status & IF_SDIO_IO_RDY) &&
507 (status & IF_SDIO_DL_RDY))
509 if (time_after(jiffies, timeout)) {
516 chunk_size = min(size, (size_t)60);
518 *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
519 memcpy(chunk_buffer + 4, firmware, chunk_size);
521 lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
523 ret = sdio_writesb(card->func, card->ioport,
528 firmware += chunk_size;
532 /* an empty block marks the end of the transfer */
533 memset(chunk_buffer, 0, 4);
534 ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
538 lbs_deb_sdio("waiting for helper to boot...\n");
540 /* wait for the helper to boot by looking at the size register */
541 timeout = jiffies + HZ;
545 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
549 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
556 if (time_after(jiffies, timeout)) {
567 sdio_release_host(card->func);
570 release_firmware(fw);
574 lbs_pr_err("failed to load helper firmware\n");
576 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
581 static int if_sdio_prog_real(struct if_sdio_card *card)
585 const struct firmware *fw;
586 unsigned long timeout;
590 size_t size, req_size;
592 lbs_deb_enter(LBS_DEB_SDIO);
594 ret = request_firmware(&fw, card->firmware, &card->func->dev);
596 lbs_pr_err("can't load firmware\n");
600 chunk_buffer = kzalloc(512, GFP_KERNEL);
606 sdio_claim_host(card->func);
608 ret = sdio_set_block_size(card->func, 32);
616 timeout = jiffies + HZ;
618 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
621 if ((status & IF_SDIO_IO_RDY) &&
622 (status & IF_SDIO_DL_RDY))
624 if (time_after(jiffies, timeout)) {
631 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
635 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
639 lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
642 lbs_deb_sdio("firmware helper gave up early\n");
647 if (req_size & 0x01) {
648 lbs_deb_sdio("firmware helper signalled error\n");
657 chunk_size = min(req_size, (size_t)512);
659 memcpy(chunk_buffer, firmware, chunk_size);
661 lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
662 chunk_size, (chunk_size + 31) / 32 * 32);
664 ret = sdio_writesb(card->func, card->ioport,
665 chunk_buffer, roundup(chunk_size, 32));
669 firmware += chunk_size;
671 req_size -= chunk_size;
677 lbs_deb_sdio("waiting for firmware to boot...\n");
679 /* wait for the firmware to boot */
680 timeout = jiffies + HZ;
684 scratch = if_sdio_read_scratch(card, &ret);
688 if (scratch == IF_SDIO_FIRMWARE_OK)
691 if (time_after(jiffies, timeout)) {
702 sdio_release_host(card->func);
705 release_firmware(fw);
709 lbs_pr_err("failed to load firmware\n");
711 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
716 static int if_sdio_prog_firmware(struct if_sdio_card *card)
721 lbs_deb_enter(LBS_DEB_SDIO);
723 sdio_claim_host(card->func);
724 scratch = if_sdio_read_scratch(card, &ret);
725 sdio_release_host(card->func);
730 lbs_deb_sdio("firmware status = %#x\n", scratch);
732 if (scratch == IF_SDIO_FIRMWARE_OK) {
733 lbs_deb_sdio("firmware already loaded\n");
737 ret = if_sdio_prog_helper(card);
741 ret = if_sdio_prog_real(card);
746 sdio_claim_host(card->func);
747 sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
748 sdio_release_host(card->func);
752 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
757 /*******************************************************************/
758 /* Libertas callbacks */
759 /*******************************************************************/
761 static int if_sdio_host_to_card(struct lbs_private *priv,
762 u8 type, u8 *buf, u16 nb)
765 struct if_sdio_card *card;
766 struct if_sdio_packet *packet, *cur;
770 lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
774 if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
780 * The transfer must be in one transaction or the firmware
781 * goes suicidal. There's no way to guarantee that for all
782 * controllers, but we can at least try.
784 size = sdio_align_size(card->func, nb + 4);
786 packet = kzalloc(sizeof(struct if_sdio_packet) + size,
797 * SDIO specific header.
799 packet->buffer[0] = (nb + 4) & 0xff;
800 packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
801 packet->buffer[2] = type;
802 packet->buffer[3] = 0;
804 memcpy(packet->buffer + 4, buf, nb);
806 spin_lock_irqsave(&card->lock, flags);
809 card->packets = packet;
819 priv->dnld_sent = DNLD_CMD_SENT;
822 priv->dnld_sent = DNLD_DATA_SENT;
825 lbs_deb_sdio("unknown packet type %d\n", (int)type);
828 spin_unlock_irqrestore(&card->lock, flags);
830 queue_work(card->workqueue, &card->packet_worker);
835 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
840 static int if_sdio_enter_deep_sleep(struct lbs_private *priv)
843 struct cmd_header cmd;
845 memset(&cmd, 0, sizeof(cmd));
847 lbs_deb_sdio("send DEEP_SLEEP command\n");
848 ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd),
849 lbs_cmd_copyback, (unsigned long) &cmd);
851 lbs_pr_err("DEEP_SLEEP cmd failed\n");
857 static int if_sdio_exit_deep_sleep(struct lbs_private *priv)
859 struct if_sdio_card *card = priv->card;
862 lbs_deb_enter(LBS_DEB_SDIO);
863 sdio_claim_host(card->func);
865 sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret);
867 lbs_pr_err("sdio_writeb failed!\n");
869 sdio_release_host(card->func);
870 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
874 static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv)
876 struct if_sdio_card *card = priv->card;
879 lbs_deb_enter(LBS_DEB_SDIO);
880 sdio_claim_host(card->func);
882 sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret);
884 lbs_pr_err("sdio_writeb failed!\n");
886 sdio_release_host(card->func);
887 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
892 /*******************************************************************/
894 /*******************************************************************/
896 static void if_sdio_interrupt(struct sdio_func *func)
899 struct if_sdio_card *card;
902 lbs_deb_enter(LBS_DEB_SDIO);
904 card = sdio_get_drvdata(func);
906 cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
910 lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
912 sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
917 * Ignore the define name, this really means the card has
918 * successfully received the command.
920 card->priv->is_activity_detected = 1;
921 if (cause & IF_SDIO_H_INT_DNLD)
922 lbs_host_to_card_done(card->priv);
925 if (cause & IF_SDIO_H_INT_UPLD) {
926 ret = if_sdio_card_to_host(card);
934 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
937 static int if_sdio_probe(struct sdio_func *func,
938 const struct sdio_device_id *id)
940 struct if_sdio_card *card;
941 struct lbs_private *priv;
944 struct if_sdio_packet *packet;
946 lbs_deb_enter(LBS_DEB_SDIO);
948 for (i = 0;i < func->card->num_info;i++) {
949 if (sscanf(func->card->info[i],
950 "802.11 SDIO ID: %x", &model) == 1)
952 if (sscanf(func->card->info[i],
953 "ID: %x", &model) == 1)
955 if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
956 model = IF_SDIO_MODEL_8385;
961 if (i == func->card->num_info) {
962 lbs_pr_err("unable to identify card model\n");
966 card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
973 switch (card->model) {
974 case IF_SDIO_MODEL_8385:
975 card->scratch_reg = IF_SDIO_SCRATCH_OLD;
977 case IF_SDIO_MODEL_8686:
978 card->scratch_reg = IF_SDIO_SCRATCH;
980 case IF_SDIO_MODEL_8688:
981 default: /* for newer chipsets */
982 card->scratch_reg = IF_SDIO_FW_STATUS;
986 spin_lock_init(&card->lock);
987 card->workqueue = create_workqueue("libertas_sdio");
988 INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
990 for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
991 if (card->model == if_sdio_models[i].model)
995 if (i == ARRAY_SIZE(if_sdio_models)) {
996 lbs_pr_err("unknown card model 0x%x\n", card->model);
1001 card->helper = if_sdio_models[i].helper;
1002 card->firmware = if_sdio_models[i].firmware;
1004 if (lbs_helper_name) {
1005 lbs_deb_sdio("overriding helper firmware: %s\n",
1007 card->helper = lbs_helper_name;
1011 lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
1012 card->firmware = lbs_fw_name;
1015 sdio_claim_host(func);
1017 ret = sdio_enable_func(func);
1021 ret = sdio_claim_irq(func, if_sdio_interrupt);
1025 card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
1029 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
1033 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
1037 sdio_release_host(func);
1039 sdio_set_drvdata(func, card);
1041 lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
1042 "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
1043 func->class, func->vendor, func->device,
1044 model, (unsigned)card->ioport);
1046 ret = if_sdio_prog_firmware(card);
1050 priv = lbs_add_card(card, &func->dev);
1059 priv->hw_host_to_card = if_sdio_host_to_card;
1060 priv->enter_deep_sleep = if_sdio_enter_deep_sleep;
1061 priv->exit_deep_sleep = if_sdio_exit_deep_sleep;
1062 priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup;
1066 sdio_claim_host(func);
1069 * Get rx_unit if the chip is SD8688 or newer.
1070 * SD8385 & SD8686 do not have rx_unit.
1072 if ((card->model != IF_SDIO_MODEL_8385)
1073 && (card->model != IF_SDIO_MODEL_8686))
1074 card->rx_unit = if_sdio_read_rx_unit(card);
1079 * Enable interrupts now that everything is set up
1081 sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
1082 sdio_release_host(func);
1087 * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
1089 if (card->model == IF_SDIO_MODEL_8688) {
1090 struct cmd_header cmd;
1092 memset(&cmd, 0, sizeof(cmd));
1094 lbs_deb_sdio("send function INIT command\n");
1095 if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd),
1096 lbs_cmd_copyback, (unsigned long) &cmd))
1097 lbs_pr_alert("CMD_FUNC_INIT cmd failed\n");
1100 ret = lbs_start_card(priv);
1102 goto err_activate_card;
1105 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1110 flush_workqueue(card->workqueue);
1111 lbs_remove_card(priv);
1113 sdio_claim_host(func);
1115 sdio_release_irq(func);
1117 sdio_disable_func(func);
1119 sdio_release_host(func);
1121 destroy_workqueue(card->workqueue);
1122 while (card->packets) {
1123 packet = card->packets;
1124 card->packets = card->packets->next;
1133 static void if_sdio_remove(struct sdio_func *func)
1135 struct if_sdio_card *card;
1136 struct if_sdio_packet *packet;
1138 lbs_deb_enter(LBS_DEB_SDIO);
1140 card = sdio_get_drvdata(func);
1142 if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) {
1144 * FUNC_SHUTDOWN is required for SD8688 WLAN/BT
1145 * multiple functions
1147 struct cmd_header cmd;
1149 memset(&cmd, 0, sizeof(cmd));
1151 lbs_deb_sdio("send function SHUTDOWN command\n");
1152 if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN,
1153 &cmd, sizeof(cmd), lbs_cmd_copyback,
1154 (unsigned long) &cmd))
1155 lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n");
1159 lbs_deb_sdio("call remove card\n");
1160 lbs_stop_card(card->priv);
1161 lbs_remove_card(card->priv);
1162 card->priv->surpriseremoved = 1;
1164 flush_workqueue(card->workqueue);
1165 destroy_workqueue(card->workqueue);
1167 sdio_claim_host(func);
1168 sdio_release_irq(func);
1169 sdio_disable_func(func);
1170 sdio_release_host(func);
1172 while (card->packets) {
1173 packet = card->packets;
1174 card->packets = card->packets->next;
1180 lbs_deb_leave(LBS_DEB_SDIO);
1183 static struct sdio_driver if_sdio_driver = {
1184 .name = "libertas_sdio",
1185 .id_table = if_sdio_ids,
1186 .probe = if_sdio_probe,
1187 .remove = if_sdio_remove,
1190 /*******************************************************************/
1191 /* Module functions */
1192 /*******************************************************************/
1194 static int __init if_sdio_init_module(void)
1198 lbs_deb_enter(LBS_DEB_SDIO);
1200 printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
1201 printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
1203 ret = sdio_register_driver(&if_sdio_driver);
1205 /* Clear the flag in case user removes the card. */
1208 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1213 static void __exit if_sdio_exit_module(void)
1215 lbs_deb_enter(LBS_DEB_SDIO);
1217 /* Set the flag as user is removing this module. */
1220 sdio_unregister_driver(&if_sdio_driver);
1222 lbs_deb_leave(LBS_DEB_SDIO);
1225 module_init(if_sdio_init_module);
1226 module_exit(if_sdio_exit_module);
1228 MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
1229 MODULE_AUTHOR("Pierre Ossman");
1230 MODULE_LICENSE("GPL");