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");