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>
46 /* The if_sdio_remove() callback function is called when
47 * user removes this module from kernel space or ejects
48 * the card from the slot. The driver handles these 2 cases
49 * differently for SD8688 combo chip.
50 * If the user is removing the module, the FUNC_SHUTDOWN
51 * command for SD8688 is sent to the firmware.
52 * If the card is removed, there is no need to send this command.
54 * The variable 'user_rmmod' is used to distinguish these two
55 * scenarios. This flag is initialized as FALSE in case the card
56 * is removed, and will be set to TRUE for module removal when
57 * module_exit function is called.
61 static char *lbs_helper_name = NULL;
62 module_param_named(helper_name, lbs_helper_name, charp, 0644);
64 static char *lbs_fw_name = NULL;
65 module_param_named(fw_name, lbs_fw_name, charp, 0644);
67 static const struct sdio_device_id if_sdio_ids[] = {
68 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
69 SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
70 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
71 SDIO_DEVICE_ID_MARVELL_8688WLAN) },
72 { /* end: all zeroes */ },
75 MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
77 struct if_sdio_model {
83 static struct if_sdio_model if_sdio_models[] = {
86 .model = IF_SDIO_MODEL_8385,
87 .helper = "sd8385_helper.bin",
88 .firmware = "sd8385.bin",
92 .model = IF_SDIO_MODEL_8686,
93 .helper = "sd8686_helper.bin",
94 .firmware = "sd8686.bin",
98 .model = IF_SDIO_MODEL_8688,
99 .helper = "sd8688_helper.bin",
100 .firmware = "sd8688.bin",
103 MODULE_FIRMWARE("sd8385_helper.bin");
104 MODULE_FIRMWARE("sd8385.bin");
105 MODULE_FIRMWARE("sd8686_helper.bin");
106 MODULE_FIRMWARE("sd8686.bin");
107 MODULE_FIRMWARE("sd8688_helper.bin");
108 MODULE_FIRMWARE("sd8688.bin");
110 struct if_sdio_packet {
111 struct if_sdio_packet *next;
113 u8 buffer[0] __attribute__((aligned(4)));
116 struct if_sdio_card {
117 struct sdio_func *func;
118 struct lbs_private *priv;
121 unsigned long ioport;
122 unsigned int scratch_reg;
125 const char *firmware;
130 struct if_sdio_packet *packets;
132 struct workqueue_struct *workqueue;
133 struct work_struct packet_worker;
138 /********************************************************************/
140 /********************************************************************/
143 * For SD8385/SD8686, this function reads firmware status after
144 * the image is downloaded, or reads RX packet length when
145 * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received.
146 * For SD8688, this function reads firmware status only.
148 static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
153 scratch = sdio_readb(card->func, card->scratch_reg, &ret);
155 scratch |= sdio_readb(card->func, card->scratch_reg + 1,
167 static u8 if_sdio_read_rx_unit(struct if_sdio_card *card)
172 rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret);
180 static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err)
185 switch (card->model) {
186 case IF_SDIO_MODEL_8385:
187 case IF_SDIO_MODEL_8686:
188 rx_len = if_sdio_read_scratch(card, &ret);
190 case IF_SDIO_MODEL_8688:
191 default: /* for newer chipsets */
192 rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret);
194 rx_len <<= card->rx_unit;
196 rx_len = 0xffff; /* invalid length */
207 static int if_sdio_handle_cmd(struct if_sdio_card *card,
208 u8 *buffer, unsigned size)
210 struct lbs_private *priv = card->priv;
215 lbs_deb_enter(LBS_DEB_SDIO);
217 if (size > LBS_CMD_BUFFER_SIZE) {
218 lbs_deb_sdio("response packet too large (%d bytes)\n",
224 spin_lock_irqsave(&priv->driver_lock, flags);
226 i = (priv->resp_idx == 0) ? 1 : 0;
227 BUG_ON(priv->resp_len[i]);
228 priv->resp_len[i] = size;
229 memcpy(priv->resp_buf[i], buffer, size);
230 lbs_notify_command_response(priv, i);
232 spin_unlock_irqrestore(&card->priv->driver_lock, flags);
237 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
241 static int if_sdio_handle_data(struct if_sdio_card *card,
242 u8 *buffer, unsigned size)
248 lbs_deb_enter(LBS_DEB_SDIO);
250 if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
251 lbs_deb_sdio("response packet too large (%d bytes)\n",
257 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
263 skb_reserve(skb, NET_IP_ALIGN);
265 data = skb_put(skb, size);
267 memcpy(data, buffer, size);
269 lbs_process_rxed_packet(card->priv, skb);
274 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
279 static int if_sdio_handle_event(struct if_sdio_card *card,
280 u8 *buffer, unsigned size)
285 lbs_deb_enter(LBS_DEB_SDIO);
287 if (card->model == IF_SDIO_MODEL_8385) {
288 event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
292 /* right shift 3 bits to get the event id */
296 lbs_deb_sdio("event packet too small (%d bytes)\n",
301 event = buffer[3] << 24;
302 event |= buffer[2] << 16;
303 event |= buffer[1] << 8;
304 event |= buffer[0] << 0;
307 lbs_queue_event(card->priv, event & 0xFF);
311 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
316 static int if_sdio_card_to_host(struct if_sdio_card *card)
320 u16 size, type, chunk;
321 unsigned long timeout;
323 lbs_deb_enter(LBS_DEB_SDIO);
325 size = if_sdio_read_rx_len(card, &ret);
330 lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
336 timeout = jiffies + HZ;
338 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
341 if (status & IF_SDIO_IO_RDY)
343 if (time_after(jiffies, timeout)) {
351 * The transfer must be in one transaction or the firmware
352 * goes suicidal. There's no way to guarantee that for all
353 * controllers, but we can at least try.
355 chunk = sdio_align_size(card->func, size);
357 ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
361 chunk = card->buffer[0] | (card->buffer[1] << 8);
362 type = card->buffer[2] | (card->buffer[3] << 8);
364 lbs_deb_sdio("packet of type %d and size %d bytes\n",
365 (int)type, (int)chunk);
368 lbs_deb_sdio("packet fragment (%d > %d)\n",
369 (int)chunk, (int)size);
375 lbs_deb_sdio("packet fragment (%d < %d)\n",
376 (int)chunk, (int)size);
381 ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
386 ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
391 ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
396 lbs_deb_sdio("invalid type (%d) from firmware\n",
404 lbs_pr_err("problem fetching packet from firmware\n");
406 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
411 static void if_sdio_host_to_card_worker(struct work_struct *work)
413 struct if_sdio_card *card;
414 struct if_sdio_packet *packet;
415 unsigned long timeout;
420 lbs_deb_enter(LBS_DEB_SDIO);
422 card = container_of(work, struct if_sdio_card, packet_worker);
425 spin_lock_irqsave(&card->lock, flags);
426 packet = card->packets;
428 card->packets = packet->next;
429 spin_unlock_irqrestore(&card->lock, flags);
434 sdio_claim_host(card->func);
436 timeout = jiffies + HZ;
438 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
441 if (status & IF_SDIO_IO_RDY)
443 if (time_after(jiffies, timeout)) {
450 ret = sdio_writesb(card->func, card->ioport,
451 packet->buffer, packet->nb);
455 sdio_release_host(card->func);
460 lbs_deb_leave(LBS_DEB_SDIO);
463 /********************************************************************/
465 /********************************************************************/
467 static int if_sdio_prog_helper(struct if_sdio_card *card)
471 const struct firmware *fw;
472 unsigned long timeout;
478 lbs_deb_enter(LBS_DEB_SDIO);
480 ret = request_firmware(&fw, card->helper, &card->func->dev);
482 lbs_pr_err("can't load helper firmware\n");
486 chunk_buffer = kzalloc(64, GFP_KERNEL);
492 sdio_claim_host(card->func);
494 ret = sdio_set_block_size(card->func, 32);
502 timeout = jiffies + HZ;
504 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
507 if ((status & IF_SDIO_IO_RDY) &&
508 (status & IF_SDIO_DL_RDY))
510 if (time_after(jiffies, timeout)) {
517 chunk_size = min(size, (size_t)60);
519 *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
520 memcpy(chunk_buffer + 4, firmware, chunk_size);
522 lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
524 ret = sdio_writesb(card->func, card->ioport,
529 firmware += chunk_size;
533 /* an empty block marks the end of the transfer */
534 memset(chunk_buffer, 0, 4);
535 ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
539 lbs_deb_sdio("waiting for helper to boot...\n");
541 /* wait for the helper to boot by looking at the size register */
542 timeout = jiffies + HZ;
546 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
550 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
557 if (time_after(jiffies, timeout)) {
568 sdio_release_host(card->func);
571 release_firmware(fw);
575 lbs_pr_err("failed to load helper firmware\n");
577 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
582 static int if_sdio_prog_real(struct if_sdio_card *card)
586 const struct firmware *fw;
587 unsigned long timeout;
591 size_t size, req_size;
593 lbs_deb_enter(LBS_DEB_SDIO);
595 ret = request_firmware(&fw, card->firmware, &card->func->dev);
597 lbs_pr_err("can't load firmware\n");
601 chunk_buffer = kzalloc(512, GFP_KERNEL);
607 sdio_claim_host(card->func);
609 ret = sdio_set_block_size(card->func, 32);
617 timeout = jiffies + HZ;
619 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
622 if ((status & IF_SDIO_IO_RDY) &&
623 (status & IF_SDIO_DL_RDY))
625 if (time_after(jiffies, timeout)) {
632 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
636 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
640 lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
643 lbs_deb_sdio("firmware helper gave up early\n");
648 if (req_size & 0x01) {
649 lbs_deb_sdio("firmware helper signalled error\n");
658 chunk_size = min(req_size, (size_t)512);
660 memcpy(chunk_buffer, firmware, chunk_size);
662 lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
663 chunk_size, (chunk_size + 31) / 32 * 32);
665 ret = sdio_writesb(card->func, card->ioport,
666 chunk_buffer, roundup(chunk_size, 32));
670 firmware += chunk_size;
672 req_size -= chunk_size;
678 lbs_deb_sdio("waiting for firmware to boot...\n");
680 /* wait for the firmware to boot */
681 timeout = jiffies + HZ;
685 scratch = if_sdio_read_scratch(card, &ret);
689 if (scratch == IF_SDIO_FIRMWARE_OK)
692 if (time_after(jiffies, timeout)) {
703 sdio_release_host(card->func);
706 release_firmware(fw);
710 lbs_pr_err("failed to load firmware\n");
712 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
717 static int if_sdio_prog_firmware(struct if_sdio_card *card)
722 lbs_deb_enter(LBS_DEB_SDIO);
724 sdio_claim_host(card->func);
725 scratch = if_sdio_read_scratch(card, &ret);
726 sdio_release_host(card->func);
731 lbs_deb_sdio("firmware status = %#x\n", scratch);
733 if (scratch == IF_SDIO_FIRMWARE_OK) {
734 lbs_deb_sdio("firmware already loaded\n");
738 ret = if_sdio_prog_helper(card);
742 ret = if_sdio_prog_real(card);
747 sdio_claim_host(card->func);
748 sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
749 sdio_release_host(card->func);
753 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
758 /*******************************************************************/
759 /* Libertas callbacks */
760 /*******************************************************************/
762 static int if_sdio_host_to_card(struct lbs_private *priv,
763 u8 type, u8 *buf, u16 nb)
766 struct if_sdio_card *card;
767 struct if_sdio_packet *packet, *cur;
771 lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
775 if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
781 * The transfer must be in one transaction or the firmware
782 * goes suicidal. There's no way to guarantee that for all
783 * controllers, but we can at least try.
785 size = sdio_align_size(card->func, nb + 4);
787 packet = kzalloc(sizeof(struct if_sdio_packet) + size,
798 * SDIO specific header.
800 packet->buffer[0] = (nb + 4) & 0xff;
801 packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
802 packet->buffer[2] = type;
803 packet->buffer[3] = 0;
805 memcpy(packet->buffer + 4, buf, nb);
807 spin_lock_irqsave(&card->lock, flags);
810 card->packets = packet;
820 priv->dnld_sent = DNLD_CMD_SENT;
823 priv->dnld_sent = DNLD_DATA_SENT;
826 lbs_deb_sdio("unknown packet type %d\n", (int)type);
829 spin_unlock_irqrestore(&card->lock, flags);
831 queue_work(card->workqueue, &card->packet_worker);
836 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
841 static int if_sdio_enter_deep_sleep(struct lbs_private *priv)
844 struct cmd_header cmd;
846 memset(&cmd, 0, sizeof(cmd));
848 lbs_deb_sdio("send DEEP_SLEEP command\n");
849 ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd),
850 lbs_cmd_copyback, (unsigned long) &cmd);
852 lbs_pr_err("DEEP_SLEEP cmd failed\n");
858 static int if_sdio_exit_deep_sleep(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, HOST_POWER_UP, 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);
875 static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv)
877 struct if_sdio_card *card = priv->card;
880 lbs_deb_enter(LBS_DEB_SDIO);
881 sdio_claim_host(card->func);
883 sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret);
885 lbs_pr_err("sdio_writeb failed!\n");
887 sdio_release_host(card->func);
888 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
893 /*******************************************************************/
895 /*******************************************************************/
897 static void if_sdio_interrupt(struct sdio_func *func)
900 struct if_sdio_card *card;
903 lbs_deb_enter(LBS_DEB_SDIO);
905 card = sdio_get_drvdata(func);
907 cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
911 lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
913 sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
918 * Ignore the define name, this really means the card has
919 * successfully received the command.
921 card->priv->is_activity_detected = 1;
922 if (cause & IF_SDIO_H_INT_DNLD)
923 lbs_host_to_card_done(card->priv);
926 if (cause & IF_SDIO_H_INT_UPLD) {
927 ret = if_sdio_card_to_host(card);
935 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
938 static int if_sdio_probe(struct sdio_func *func,
939 const struct sdio_device_id *id)
941 struct if_sdio_card *card;
942 struct lbs_private *priv;
945 struct if_sdio_packet *packet;
947 lbs_deb_enter(LBS_DEB_SDIO);
949 for (i = 0;i < func->card->num_info;i++) {
950 if (sscanf(func->card->info[i],
951 "802.11 SDIO ID: %x", &model) == 1)
953 if (sscanf(func->card->info[i],
954 "ID: %x", &model) == 1)
956 if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
957 model = IF_SDIO_MODEL_8385;
962 if (i == func->card->num_info) {
963 lbs_pr_err("unable to identify card model\n");
967 card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
974 switch (card->model) {
975 case IF_SDIO_MODEL_8385:
976 card->scratch_reg = IF_SDIO_SCRATCH_OLD;
978 case IF_SDIO_MODEL_8686:
979 card->scratch_reg = IF_SDIO_SCRATCH;
981 case IF_SDIO_MODEL_8688:
982 default: /* for newer chipsets */
983 card->scratch_reg = IF_SDIO_FW_STATUS;
987 spin_lock_init(&card->lock);
988 card->workqueue = create_workqueue("libertas_sdio");
989 INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
991 for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
992 if (card->model == if_sdio_models[i].model)
996 if (i == ARRAY_SIZE(if_sdio_models)) {
997 lbs_pr_err("unknown card model 0x%x\n", card->model);
1002 card->helper = if_sdio_models[i].helper;
1003 card->firmware = if_sdio_models[i].firmware;
1005 if (lbs_helper_name) {
1006 lbs_deb_sdio("overriding helper firmware: %s\n",
1008 card->helper = lbs_helper_name;
1012 lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
1013 card->firmware = lbs_fw_name;
1016 sdio_claim_host(func);
1018 ret = sdio_enable_func(func);
1022 ret = sdio_claim_irq(func, if_sdio_interrupt);
1026 card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
1030 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
1034 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
1038 sdio_release_host(func);
1040 sdio_set_drvdata(func, card);
1042 lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
1043 "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
1044 func->class, func->vendor, func->device,
1045 model, (unsigned)card->ioport);
1047 ret = if_sdio_prog_firmware(card);
1051 priv = lbs_add_card(card, &func->dev);
1060 priv->hw_host_to_card = if_sdio_host_to_card;
1061 priv->enter_deep_sleep = if_sdio_enter_deep_sleep;
1062 priv->exit_deep_sleep = if_sdio_exit_deep_sleep;
1063 priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup;
1067 sdio_claim_host(func);
1070 * Get rx_unit if the chip is SD8688 or newer.
1071 * SD8385 & SD8686 do not have rx_unit.
1073 if ((card->model != IF_SDIO_MODEL_8385)
1074 && (card->model != IF_SDIO_MODEL_8686))
1075 card->rx_unit = if_sdio_read_rx_unit(card);
1080 * Enable interrupts now that everything is set up
1082 sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
1083 sdio_release_host(func);
1088 * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
1090 if (card->model == IF_SDIO_MODEL_8688) {
1091 struct cmd_header cmd;
1093 memset(&cmd, 0, sizeof(cmd));
1095 lbs_deb_sdio("send function INIT command\n");
1096 if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd),
1097 lbs_cmd_copyback, (unsigned long) &cmd))
1098 lbs_pr_alert("CMD_FUNC_INIT cmd failed\n");
1101 ret = lbs_start_card(priv);
1103 goto err_activate_card;
1106 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1111 flush_workqueue(card->workqueue);
1112 lbs_remove_card(priv);
1114 sdio_claim_host(func);
1116 sdio_release_irq(func);
1118 sdio_disable_func(func);
1120 sdio_release_host(func);
1122 destroy_workqueue(card->workqueue);
1123 while (card->packets) {
1124 packet = card->packets;
1125 card->packets = card->packets->next;
1134 static void if_sdio_remove(struct sdio_func *func)
1136 struct if_sdio_card *card;
1137 struct if_sdio_packet *packet;
1139 lbs_deb_enter(LBS_DEB_SDIO);
1141 card = sdio_get_drvdata(func);
1143 if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) {
1145 * FUNC_SHUTDOWN is required for SD8688 WLAN/BT
1146 * multiple functions
1148 struct cmd_header cmd;
1150 memset(&cmd, 0, sizeof(cmd));
1152 lbs_deb_sdio("send function SHUTDOWN command\n");
1153 if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN,
1154 &cmd, sizeof(cmd), lbs_cmd_copyback,
1155 (unsigned long) &cmd))
1156 lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n");
1160 lbs_deb_sdio("call remove card\n");
1161 lbs_stop_card(card->priv);
1162 lbs_remove_card(card->priv);
1163 card->priv->surpriseremoved = 1;
1165 flush_workqueue(card->workqueue);
1166 destroy_workqueue(card->workqueue);
1168 sdio_claim_host(func);
1169 sdio_release_irq(func);
1170 sdio_disable_func(func);
1171 sdio_release_host(func);
1173 while (card->packets) {
1174 packet = card->packets;
1175 card->packets = card->packets->next;
1181 lbs_deb_leave(LBS_DEB_SDIO);
1184 static struct sdio_driver if_sdio_driver = {
1185 .name = "libertas_sdio",
1186 .id_table = if_sdio_ids,
1187 .probe = if_sdio_probe,
1188 .remove = if_sdio_remove,
1191 /*******************************************************************/
1192 /* Module functions */
1193 /*******************************************************************/
1195 static int __init if_sdio_init_module(void)
1199 lbs_deb_enter(LBS_DEB_SDIO);
1201 printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
1202 printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
1204 ret = sdio_register_driver(&if_sdio_driver);
1206 /* Clear the flag in case user removes the card. */
1209 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1214 static void __exit if_sdio_exit_module(void)
1216 lbs_deb_enter(LBS_DEB_SDIO);
1218 /* Set the flag as user is removing this module. */
1221 sdio_unregister_driver(&if_sdio_driver);
1223 lbs_deb_leave(LBS_DEB_SDIO);
1226 module_init(if_sdio_init_module);
1227 module_exit(if_sdio_exit_module);
1229 MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
1230 MODULE_AUTHOR("Pierre Ossman");
1231 MODULE_LICENSE("GPL");