2 * Marvell Wireless LAN device driver: SDIO specific handling
4 * Copyright (C) 2011-2014, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
20 #include <linux/firmware.h>
32 #define SDIO_VERSION "1.0"
34 /* The mwifiex_sdio_remove() callback function is called when
35 * user removes this module from kernel space or ejects
36 * the card from the slot. The driver handles these 2 cases
38 * If the user is removing the module, the few commands (FUNC_SHUTDOWN,
39 * HS_CANCEL etc.) are sent to the firmware.
40 * If the card is removed, there is no need to send these command.
42 * The variable 'user_rmmod' is used to distinguish these two
43 * scenarios. This flag is initialized as FALSE in case the card
44 * is removed, and will be set to TRUE for module removal when
45 * module_exit function is called.
49 static struct mwifiex_if_ops sdio_ops
;
51 static struct semaphore add_remove_card_sem
;
53 static struct memory_type_mapping mem_type_mapping_tbl
[] = {
54 {"ITCM", NULL
, 0, 0xF0},
55 {"DTCM", NULL
, 0, 0xF1},
56 {"SQRAM", NULL
, 0, 0xF2},
57 {"APU", NULL
, 0, 0xF3},
58 {"CIU", NULL
, 0, 0xF4},
59 {"ICU", NULL
, 0, 0xF5},
60 {"MAC", NULL
, 0, 0xF6},
61 {"EXT7", NULL
, 0, 0xF7},
62 {"EXT8", NULL
, 0, 0xF8},
63 {"EXT9", NULL
, 0, 0xF9},
64 {"EXT10", NULL
, 0, 0xFA},
65 {"EXT11", NULL
, 0, 0xFB},
66 {"EXT12", NULL
, 0, 0xFC},
67 {"EXT13", NULL
, 0, 0xFD},
68 {"EXTLAST", NULL
, 0, 0xFE},
74 * This function probes an mwifiex device and registers it. It allocates
75 * the card structure, enables SDIO function number and initiates the
76 * device registration and initialization procedure by adding a logical
80 mwifiex_sdio_probe(struct sdio_func
*func
, const struct sdio_device_id
*id
)
83 struct sdio_mmc_card
*card
= NULL
;
85 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
86 func
->vendor
, func
->device
, func
->class, func
->num
);
88 card
= kzalloc(sizeof(struct sdio_mmc_card
), GFP_KERNEL
);
94 func
->card
->quirks
|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE
;
96 if (id
->driver_data
) {
97 struct mwifiex_sdio_device
*data
= (void *)id
->driver_data
;
99 card
->firmware
= data
->firmware
;
100 card
->reg
= data
->reg
;
101 card
->max_ports
= data
->max_ports
;
102 card
->mp_agg_pkt_limit
= data
->mp_agg_pkt_limit
;
103 card
->supports_sdio_new_mode
= data
->supports_sdio_new_mode
;
104 card
->has_control_mask
= data
->has_control_mask
;
105 card
->tx_buf_size
= data
->tx_buf_size
;
106 card
->mp_tx_agg_buf_size
= data
->mp_tx_agg_buf_size
;
107 card
->mp_rx_agg_buf_size
= data
->mp_rx_agg_buf_size
;
108 card
->supports_fw_dump
= data
->supports_fw_dump
;
111 sdio_claim_host(func
);
112 ret
= sdio_enable_func(func
);
113 sdio_release_host(func
);
116 pr_err("%s: failed to enable function\n", __func__
);
121 if (mwifiex_add_card(card
, &add_remove_card_sem
, &sdio_ops
,
123 pr_err("%s: add card failed\n", __func__
);
125 sdio_claim_host(func
);
126 ret
= sdio_disable_func(func
);
127 sdio_release_host(func
);
137 * Kernel needs to suspend all functions separately. Therefore all
138 * registered functions must have drivers with suspend and resume
139 * methods. Failing that the kernel simply removes the whole card.
141 * If already not resumed, this function turns on the traffic and
142 * sends a host sleep cancel request to the firmware.
144 static int mwifiex_sdio_resume(struct device
*dev
)
146 struct sdio_func
*func
= dev_to_sdio_func(dev
);
147 struct sdio_mmc_card
*card
;
148 struct mwifiex_adapter
*adapter
;
149 mmc_pm_flag_t pm_flag
= 0;
152 pm_flag
= sdio_get_host_pm_caps(func
);
153 card
= sdio_get_drvdata(func
);
154 if (!card
|| !card
->adapter
) {
155 pr_err("resume: invalid card or adapter\n");
159 pr_err("resume: sdio_func is not specified\n");
163 adapter
= card
->adapter
;
165 if (!adapter
->is_suspended
) {
166 dev_warn(adapter
->dev
, "device already resumed\n");
170 adapter
->is_suspended
= false;
172 /* Disable Host Sleep */
173 mwifiex_cancel_hs(mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
182 * This function removes the interface and frees up the card structure.
185 mwifiex_sdio_remove(struct sdio_func
*func
)
187 struct sdio_mmc_card
*card
;
188 struct mwifiex_adapter
*adapter
;
189 struct mwifiex_private
*priv
;
191 pr_debug("info: SDIO func num=%d\n", func
->num
);
193 card
= sdio_get_drvdata(func
);
197 adapter
= card
->adapter
;
198 if (!adapter
|| !adapter
->priv_num
)
201 cancel_work_sync(&adapter
->iface_work
);
204 if (adapter
->is_suspended
)
205 mwifiex_sdio_resume(adapter
->dev
);
207 mwifiex_deauthenticate_all(adapter
);
209 priv
= mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_ANY
);
210 mwifiex_disable_auto_ds(priv
);
211 mwifiex_init_shutdown_fw(priv
, MWIFIEX_FUNC_SHUTDOWN
);
214 mwifiex_remove_card(card
->adapter
, &add_remove_card_sem
);
220 * Kernel needs to suspend all functions separately. Therefore all
221 * registered functions must have drivers with suspend and resume
222 * methods. Failing that the kernel simply removes the whole card.
224 * If already not suspended, this function allocates and sends a host
225 * sleep activate request to the firmware and turns off the traffic.
227 static int mwifiex_sdio_suspend(struct device
*dev
)
229 struct sdio_func
*func
= dev_to_sdio_func(dev
);
230 struct sdio_mmc_card
*card
;
231 struct mwifiex_adapter
*adapter
;
232 mmc_pm_flag_t pm_flag
= 0;
236 pm_flag
= sdio_get_host_pm_caps(func
);
237 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
238 sdio_func_id(func
), pm_flag
);
239 if (!(pm_flag
& MMC_PM_KEEP_POWER
)) {
240 pr_err("%s: cannot remain alive while host is"
241 " suspended\n", sdio_func_id(func
));
245 card
= sdio_get_drvdata(func
);
246 if (!card
|| !card
->adapter
) {
247 pr_err("suspend: invalid card or adapter\n");
251 pr_err("suspend: sdio_func is not specified\n");
255 adapter
= card
->adapter
;
257 /* Enable the Host Sleep */
258 if (!mwifiex_enable_hs(adapter
)) {
259 dev_err(adapter
->dev
, "cmd: failed to suspend\n");
260 adapter
->hs_enabling
= false;
264 dev_dbg(adapter
->dev
, "cmd: suspend with MMC_PM_KEEP_POWER\n");
265 ret
= sdio_set_host_pm_flags(func
, MMC_PM_KEEP_POWER
);
267 /* Indicate device suspended */
268 adapter
->is_suspended
= true;
269 adapter
->hs_enabling
= false;
274 /* Device ID for SD8786 */
275 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
276 /* Device ID for SD8787 */
277 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
278 /* Device ID for SD8797 */
279 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
280 /* Device ID for SD8897 */
281 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
284 static const struct sdio_device_id mwifiex_ids
[] = {
285 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8786
),
286 .driver_data
= (unsigned long) &mwifiex_sdio_sd8786
},
287 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8787
),
288 .driver_data
= (unsigned long) &mwifiex_sdio_sd8787
},
289 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8797
),
290 .driver_data
= (unsigned long) &mwifiex_sdio_sd8797
},
291 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8897
),
292 .driver_data
= (unsigned long) &mwifiex_sdio_sd8897
},
296 MODULE_DEVICE_TABLE(sdio
, mwifiex_ids
);
298 static const struct dev_pm_ops mwifiex_sdio_pm_ops
= {
299 .suspend
= mwifiex_sdio_suspend
,
300 .resume
= mwifiex_sdio_resume
,
303 static struct sdio_driver mwifiex_sdio
= {
304 .name
= "mwifiex_sdio",
305 .id_table
= mwifiex_ids
,
306 .probe
= mwifiex_sdio_probe
,
307 .remove
= mwifiex_sdio_remove
,
309 .owner
= THIS_MODULE
,
310 .pm
= &mwifiex_sdio_pm_ops
,
314 /* Write data into SDIO card register. Caller claims SDIO device. */
316 mwifiex_write_reg_locked(struct sdio_func
*func
, u32 reg
, u8 data
)
319 sdio_writeb(func
, data
, reg
, &ret
);
324 * This function writes data into SDIO card register.
327 mwifiex_write_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u8 data
)
329 struct sdio_mmc_card
*card
= adapter
->card
;
332 sdio_claim_host(card
->func
);
333 ret
= mwifiex_write_reg_locked(card
->func
, reg
, data
);
334 sdio_release_host(card
->func
);
340 * This function reads data from SDIO card register.
343 mwifiex_read_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u8
*data
)
345 struct sdio_mmc_card
*card
= adapter
->card
;
349 sdio_claim_host(card
->func
);
350 val
= sdio_readb(card
->func
, reg
, &ret
);
351 sdio_release_host(card
->func
);
359 * This function writes multiple data into SDIO card memory.
361 * This does not work in suspended mode.
364 mwifiex_write_data_sync(struct mwifiex_adapter
*adapter
,
365 u8
*buffer
, u32 pkt_len
, u32 port
)
367 struct sdio_mmc_card
*card
= adapter
->card
;
370 (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
: BLOCK_MODE
;
371 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
374 BLOCK_MODE
) ? (pkt_len
/
375 MWIFIEX_SDIO_BLOCK_SIZE
) : pkt_len
;
376 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
378 if (adapter
->is_suspended
) {
379 dev_err(adapter
->dev
,
380 "%s: not allowed while suspended\n", __func__
);
384 sdio_claim_host(card
->func
);
386 ret
= sdio_writesb(card
->func
, ioport
, buffer
, blk_cnt
* blk_size
);
388 sdio_release_host(card
->func
);
394 * This function reads multiple data from SDIO card memory.
396 static int mwifiex_read_data_sync(struct mwifiex_adapter
*adapter
, u8
*buffer
,
397 u32 len
, u32 port
, u8 claim
)
399 struct sdio_mmc_card
*card
= adapter
->card
;
401 u8 blk_mode
= (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
403 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
404 u32 blk_cnt
= (blk_mode
== BLOCK_MODE
) ? (len
/ MWIFIEX_SDIO_BLOCK_SIZE
)
406 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
409 sdio_claim_host(card
->func
);
411 ret
= sdio_readsb(card
->func
, buffer
, ioport
, blk_cnt
* blk_size
);
414 sdio_release_host(card
->func
);
420 * This function wakes up the card.
422 * A host power up command is written to the card configuration
423 * register to wake up the card.
425 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter
*adapter
)
427 dev_dbg(adapter
->dev
, "event: wakeup device...\n");
429 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, HOST_POWER_UP
);
433 * This function is called after the card has woken up.
435 * The card configuration register is reset.
437 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter
*adapter
)
439 dev_dbg(adapter
->dev
, "cmd: wakeup device completed\n");
441 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0);
445 * This function is used to initialize IO ports for the
446 * chipsets supporting SDIO new mode eg SD8897.
448 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter
*adapter
)
452 adapter
->ioport
= MEM_PORT
;
454 /* enable sdio new mode */
455 if (mwifiex_read_reg(adapter
, CARD_CONFIG_2_1_REG
, ®
))
457 if (mwifiex_write_reg(adapter
, CARD_CONFIG_2_1_REG
,
458 reg
| CMD53_NEW_MODE
))
461 /* Configure cmd port and enable reading rx length from the register */
462 if (mwifiex_read_reg(adapter
, CMD_CONFIG_0
, ®
))
464 if (mwifiex_write_reg(adapter
, CMD_CONFIG_0
, reg
| CMD_PORT_RD_LEN_EN
))
467 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
470 if (mwifiex_read_reg(adapter
, CMD_CONFIG_1
, ®
))
472 if (mwifiex_write_reg(adapter
, CMD_CONFIG_1
, reg
| CMD_PORT_AUTO_EN
))
478 /* This function initializes the IO ports.
480 * The following operations are performed -
481 * - Read the IO ports (0, 1 and 2)
482 * - Set host interrupt Reset-To-Read to clear
483 * - Set auto re-enable interrupt
485 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter
*adapter
)
488 struct sdio_mmc_card
*card
= adapter
->card
;
492 if (card
->supports_sdio_new_mode
) {
493 if (mwifiex_init_sdio_new_mode(adapter
))
498 /* Read the IO port */
499 if (!mwifiex_read_reg(adapter
, IO_PORT_0_REG
, ®
))
500 adapter
->ioport
|= (reg
& 0xff);
504 if (!mwifiex_read_reg(adapter
, IO_PORT_1_REG
, ®
))
505 adapter
->ioport
|= ((reg
& 0xff) << 8);
509 if (!mwifiex_read_reg(adapter
, IO_PORT_2_REG
, ®
))
510 adapter
->ioport
|= ((reg
& 0xff) << 16);
514 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter
->ioport
);
516 /* Set Host interrupt reset to read to clear */
517 if (!mwifiex_read_reg(adapter
, HOST_INT_RSR_REG
, ®
))
518 mwifiex_write_reg(adapter
, HOST_INT_RSR_REG
,
519 reg
| card
->reg
->sdio_int_mask
);
523 /* Dnld/Upld ready set to auto reset */
524 if (!mwifiex_read_reg(adapter
, card
->reg
->card_misc_cfg_reg
, ®
))
525 mwifiex_write_reg(adapter
, card
->reg
->card_misc_cfg_reg
,
526 reg
| AUTO_RE_ENABLE_INT
);
534 * This function sends data to the card.
536 static int mwifiex_write_data_to_card(struct mwifiex_adapter
*adapter
,
537 u8
*payload
, u32 pkt_len
, u32 port
)
543 ret
= mwifiex_write_data_sync(adapter
, payload
, pkt_len
, port
);
546 dev_err(adapter
->dev
, "host_to_card, write iomem"
547 " (%d) failed: %d\n", i
, ret
);
548 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
549 dev_err(adapter
->dev
, "write CFG reg failed\n");
552 if (i
> MAX_WRITE_IOMEM_RETRY
)
561 * This function gets the read port.
563 * If control port bit is set in MP read bitmap, the control port
564 * is returned, otherwise the current read port is returned and
565 * the value is increased (provided it does not reach the maximum
566 * limit, in which case it is reset to 1)
568 static int mwifiex_get_rd_port(struct mwifiex_adapter
*adapter
, u8
*port
)
570 struct sdio_mmc_card
*card
= adapter
->card
;
571 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
572 u32 rd_bitmap
= card
->mp_rd_bitmap
;
574 dev_dbg(adapter
->dev
, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap
);
576 if (card
->supports_sdio_new_mode
) {
577 if (!(rd_bitmap
& reg
->data_port_mask
))
580 if (!(rd_bitmap
& (CTRL_PORT_MASK
| reg
->data_port_mask
)))
584 if ((card
->has_control_mask
) &&
585 (card
->mp_rd_bitmap
& CTRL_PORT_MASK
)) {
586 card
->mp_rd_bitmap
&= (u32
) (~CTRL_PORT_MASK
);
588 dev_dbg(adapter
->dev
, "data: port=%d mp_rd_bitmap=0x%08x\n",
589 *port
, card
->mp_rd_bitmap
);
593 if (!(card
->mp_rd_bitmap
& (1 << card
->curr_rd_port
)))
596 /* We are now handling the SDIO data ports */
597 card
->mp_rd_bitmap
&= (u32
)(~(1 << card
->curr_rd_port
));
598 *port
= card
->curr_rd_port
;
600 if (++card
->curr_rd_port
== card
->max_ports
)
601 card
->curr_rd_port
= reg
->start_rd_port
;
603 dev_dbg(adapter
->dev
,
604 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
605 *port
, rd_bitmap
, card
->mp_rd_bitmap
);
611 * This function gets the write port for data.
613 * The current write port is returned if available and the value is
614 * increased (provided it does not reach the maximum limit, in which
615 * case it is reset to 1)
617 static int mwifiex_get_wr_port_data(struct mwifiex_adapter
*adapter
, u32
*port
)
619 struct sdio_mmc_card
*card
= adapter
->card
;
620 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
621 u32 wr_bitmap
= card
->mp_wr_bitmap
;
623 dev_dbg(adapter
->dev
, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap
);
625 if (card
->supports_sdio_new_mode
&&
626 !(wr_bitmap
& reg
->data_port_mask
)) {
627 adapter
->data_sent
= true;
629 } else if (!card
->supports_sdio_new_mode
&&
630 !(wr_bitmap
& card
->mp_data_port_mask
)) {
634 if (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)) {
635 card
->mp_wr_bitmap
&= (u32
) (~(1 << card
->curr_wr_port
));
636 *port
= card
->curr_wr_port
;
637 if (((card
->supports_sdio_new_mode
) &&
638 (++card
->curr_wr_port
== card
->max_ports
)) ||
639 ((!card
->supports_sdio_new_mode
) &&
640 (++card
->curr_wr_port
== card
->mp_end_port
)))
641 card
->curr_wr_port
= reg
->start_wr_port
;
643 adapter
->data_sent
= true;
647 if ((card
->has_control_mask
) && (*port
== CTRL_PORT
)) {
648 dev_err(adapter
->dev
,
649 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
650 *port
, card
->curr_wr_port
, wr_bitmap
,
655 dev_dbg(adapter
->dev
, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
656 *port
, wr_bitmap
, card
->mp_wr_bitmap
);
662 * This function polls the card status.
665 mwifiex_sdio_poll_card_status(struct mwifiex_adapter
*adapter
, u8 bits
)
667 struct sdio_mmc_card
*card
= adapter
->card
;
671 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
672 if (mwifiex_read_reg(adapter
, card
->reg
->poll_reg
, &cs
))
674 else if ((cs
& bits
) == bits
)
677 usleep_range(10, 20);
680 dev_err(adapter
->dev
, "poll card status failed, tries = %d\n", tries
);
686 * This function reads the firmware status.
689 mwifiex_sdio_read_fw_status(struct mwifiex_adapter
*adapter
, u16
*dat
)
691 struct sdio_mmc_card
*card
= adapter
->card
;
692 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
695 if (mwifiex_read_reg(adapter
, reg
->status_reg_0
, &fws0
))
698 if (mwifiex_read_reg(adapter
, reg
->status_reg_1
, &fws1
))
701 *dat
= (u16
) ((fws1
<< 8) | fws0
);
707 * This function disables the host interrupt.
709 * The host interrupt mask is read, the disable bit is reset and
710 * written back to the card host interrupt mask register.
712 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter
*adapter
)
714 struct sdio_mmc_card
*card
= adapter
->card
;
715 struct sdio_func
*func
= card
->func
;
717 sdio_claim_host(func
);
718 mwifiex_write_reg_locked(func
, HOST_INT_MASK_REG
, 0);
719 sdio_release_irq(func
);
720 sdio_release_host(func
);
724 * This function reads the interrupt status from card.
726 static void mwifiex_interrupt_status(struct mwifiex_adapter
*adapter
)
728 struct sdio_mmc_card
*card
= adapter
->card
;
732 if (mwifiex_read_data_sync(adapter
, card
->mp_regs
,
733 card
->reg
->max_mp_regs
,
734 REG_PORT
| MWIFIEX_SDIO_BYTE_MODE_MASK
, 0)) {
735 dev_err(adapter
->dev
, "read mp_regs failed\n");
739 sdio_ireg
= card
->mp_regs
[HOST_INTSTATUS_REG
];
742 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
743 * For SDIO new mode CMD port interrupts
744 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
745 * UP_LD_CMD_PORT_HOST_INT_STATUS
746 * Clear the interrupt status register
748 dev_dbg(adapter
->dev
, "int: sdio_ireg = %#x\n", sdio_ireg
);
749 spin_lock_irqsave(&adapter
->int_lock
, flags
);
750 adapter
->int_status
|= sdio_ireg
;
751 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
756 * SDIO interrupt handler.
758 * This function reads the interrupt status from firmware and handles
759 * the interrupt in current thread (ksdioirqd) right away.
762 mwifiex_sdio_interrupt(struct sdio_func
*func
)
764 struct mwifiex_adapter
*adapter
;
765 struct sdio_mmc_card
*card
;
767 card
= sdio_get_drvdata(func
);
768 if (!card
|| !card
->adapter
) {
769 pr_debug("int: func=%p card=%p adapter=%p\n",
770 func
, card
, card
? card
->adapter
: NULL
);
773 adapter
= card
->adapter
;
775 if (!adapter
->pps_uapsd_mode
&& adapter
->ps_state
== PS_STATE_SLEEP
)
776 adapter
->ps_state
= PS_STATE_AWAKE
;
778 mwifiex_interrupt_status(adapter
);
779 mwifiex_main_process(adapter
);
783 * This function enables the host interrupt.
785 * The host interrupt enable mask is written to the card
786 * host interrupt mask register.
788 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter
*adapter
)
790 struct sdio_mmc_card
*card
= adapter
->card
;
791 struct sdio_func
*func
= card
->func
;
794 sdio_claim_host(func
);
796 /* Request the SDIO IRQ */
797 ret
= sdio_claim_irq(func
, mwifiex_sdio_interrupt
);
799 dev_err(adapter
->dev
, "claim irq failed: ret=%d\n", ret
);
803 /* Simply write the mask to the register */
804 ret
= mwifiex_write_reg_locked(func
, HOST_INT_MASK_REG
,
805 card
->reg
->host_int_enable
);
807 dev_err(adapter
->dev
, "enable host interrupt failed\n");
808 sdio_release_irq(func
);
812 sdio_release_host(func
);
817 * This function sends a data buffer to the card.
819 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter
*adapter
,
820 u32
*type
, u8
*buffer
,
821 u32 npayload
, u32 ioport
)
827 dev_err(adapter
->dev
, "%s: buffer is NULL\n", __func__
);
831 ret
= mwifiex_read_data_sync(adapter
, buffer
, npayload
, ioport
, 1);
834 dev_err(adapter
->dev
, "%s: read iomem failed: %d\n", __func__
,
839 nb
= le16_to_cpu(*(__le16
*) (buffer
));
841 dev_err(adapter
->dev
, "%s: invalid packet, nb=%d npayload=%d\n",
842 __func__
, nb
, npayload
);
846 *type
= le16_to_cpu(*(__le16
*) (buffer
+ 2));
852 * This function downloads the firmware to the card.
854 * Firmware is downloaded to the card in blocks. Every block download
855 * is tested for CRC errors, and retried a number of times before
858 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter
*adapter
,
859 struct mwifiex_fw_image
*fw
)
861 struct sdio_mmc_card
*card
= adapter
->card
;
862 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
864 u8
*firmware
= fw
->fw_buf
;
865 u32 firmware_len
= fw
->fw_len
;
870 u32 txlen
, tx_blocks
= 0, tries
;
874 dev_err(adapter
->dev
,
875 "firmware image not found! Terminating download\n");
879 dev_dbg(adapter
->dev
, "info: downloading FW image (%d bytes)\n",
882 /* Assume that the allocated buffer is 8-byte aligned */
883 fwbuf
= kzalloc(MWIFIEX_UPLD_SIZE
, GFP_KERNEL
);
887 /* Perform firmware data transfer */
889 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
891 ret
= mwifiex_sdio_poll_card_status(adapter
, CARD_IO_READY
|
894 dev_err(adapter
->dev
, "FW download with helper:"
895 " poll status timeout @ %d\n", offset
);
900 if (offset
>= firmware_len
)
903 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
904 ret
= mwifiex_read_reg(adapter
, reg
->base_0_reg
,
907 dev_err(adapter
->dev
,
908 "dev BASE0 register read failed: "
909 "base0=%#04X(%d). Terminating dnld\n",
913 ret
= mwifiex_read_reg(adapter
, reg
->base_1_reg
,
916 dev_err(adapter
->dev
,
917 "dev BASE1 register read failed: "
918 "base1=%#04X(%d). Terminating dnld\n",
922 len
= (u16
) (((base1
& 0xff) << 8) | (base0
& 0xff));
927 usleep_range(10, 20);
932 } else if (len
> MWIFIEX_UPLD_SIZE
) {
933 dev_err(adapter
->dev
,
934 "FW dnld failed @ %d, invalid length %d\n",
944 if (i
> MAX_WRITE_IOMEM_RETRY
) {
945 dev_err(adapter
->dev
,
946 "FW dnld failed @ %d, over max retry\n",
951 dev_err(adapter
->dev
, "CRC indicated by the helper:"
952 " len = 0x%04X, txlen = %d\n", len
, txlen
);
954 /* Setting this to 0 to resend from same offset */
959 /* Set blocksize to transfer - checking for last
961 if (firmware_len
- offset
< txlen
)
962 txlen
= firmware_len
- offset
;
964 tx_blocks
= (txlen
+ MWIFIEX_SDIO_BLOCK_SIZE
- 1)
965 / MWIFIEX_SDIO_BLOCK_SIZE
;
967 /* Copy payload to buffer */
968 memmove(fwbuf
, &firmware
[offset
], txlen
);
971 ret
= mwifiex_write_data_sync(adapter
, fwbuf
, tx_blocks
*
972 MWIFIEX_SDIO_BLOCK_SIZE
,
975 dev_err(adapter
->dev
,
976 "FW download, write iomem (%d) failed @ %d\n",
978 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
979 dev_err(adapter
->dev
, "write CFG reg failed\n");
988 dev_dbg(adapter
->dev
, "info: FW download over, size %d bytes\n",
998 * This function checks the firmware status in card.
1000 * The winner interface is also determined by this function.
1002 static int mwifiex_check_fw_status(struct mwifiex_adapter
*adapter
,
1005 struct sdio_mmc_card
*card
= adapter
->card
;
1011 /* Wait for firmware initialization event */
1012 for (tries
= 0; tries
< poll_num
; tries
++) {
1013 ret
= mwifiex_sdio_read_fw_status(adapter
, &firmware_stat
);
1016 if (firmware_stat
== FIRMWARE_READY_SDIO
) {
1026 if (mwifiex_read_reg
1027 (adapter
, card
->reg
->status_reg_0
, &winner_status
))
1031 adapter
->winner
= 0;
1033 adapter
->winner
= 1;
1039 * This function decodes a received packet.
1041 * Based on the type, the packet is treated as either a data, or
1042 * a command response, or an event, and the correct handler
1043 * function is invoked.
1045 static int mwifiex_decode_rx_packet(struct mwifiex_adapter
*adapter
,
1046 struct sk_buff
*skb
, u32 upld_typ
)
1049 __le16
*curr_ptr
= (__le16
*)skb
->data
;
1050 u16 pkt_len
= le16_to_cpu(*curr_ptr
);
1052 skb_trim(skb
, pkt_len
);
1053 skb_pull(skb
, INTF_HEADER_LEN
);
1056 case MWIFIEX_TYPE_DATA
:
1057 dev_dbg(adapter
->dev
, "info: --- Rx: Data packet ---\n");
1058 mwifiex_handle_rx_packet(adapter
, skb
);
1061 case MWIFIEX_TYPE_CMD
:
1062 dev_dbg(adapter
->dev
, "info: --- Rx: Cmd Response ---\n");
1063 /* take care of curr_cmd = NULL case */
1064 if (!adapter
->curr_cmd
) {
1065 cmd_buf
= adapter
->upld_buf
;
1067 if (adapter
->ps_state
== PS_STATE_SLEEP_CFM
)
1068 mwifiex_process_sleep_confirm_resp(adapter
,
1072 memcpy(cmd_buf
, skb
->data
,
1073 min_t(u32
, MWIFIEX_SIZE_OF_CMD_BUFFER
,
1076 dev_kfree_skb_any(skb
);
1078 adapter
->cmd_resp_received
= true;
1079 adapter
->curr_cmd
->resp_skb
= skb
;
1083 case MWIFIEX_TYPE_EVENT
:
1084 dev_dbg(adapter
->dev
, "info: --- Rx: Event ---\n");
1085 adapter
->event_cause
= le32_to_cpu(*(__le32
*) skb
->data
);
1087 if ((skb
->len
> 0) && (skb
->len
< MAX_EVENT_SIZE
))
1088 memcpy(adapter
->event_body
,
1089 skb
->data
+ MWIFIEX_EVENT_HEADER_LEN
,
1092 /* event cause has been saved to adapter->event_cause */
1093 adapter
->event_received
= true;
1094 adapter
->event_skb
= skb
;
1099 dev_err(adapter
->dev
, "unknown upload type %#x\n", upld_typ
);
1100 dev_kfree_skb_any(skb
);
1108 * This function transfers received packets from card to driver, performing
1109 * aggregation if required.
1111 * For data received on control port, or if aggregation is disabled, the
1112 * received buffers are uploaded as separate packets. However, if aggregation
1113 * is enabled and required, the buffers are copied onto an aggregation buffer,
1114 * provided there is space left, processed and finally uploaded.
1116 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter
*adapter
,
1117 struct sk_buff
*skb
, u8 port
)
1119 struct sdio_mmc_card
*card
= adapter
->card
;
1120 s32 f_do_rx_aggr
= 0;
1121 s32 f_do_rx_cur
= 0;
1123 struct sk_buff
*skb_deaggr
;
1125 u32 pkt_len
, pkt_type
, mport
;
1127 u32 rx_len
= skb
->len
;
1129 if ((card
->has_control_mask
) && (port
== CTRL_PORT
)) {
1130 /* Read the command Resp without aggr */
1131 dev_dbg(adapter
->dev
, "info: %s: no aggregation for cmd "
1132 "response\n", __func__
);
1135 goto rx_curr_single
;
1138 if (!card
->mpa_rx
.enabled
) {
1139 dev_dbg(adapter
->dev
, "info: %s: rx aggregation disabled\n",
1143 goto rx_curr_single
;
1146 if ((!card
->has_control_mask
&& (card
->mp_rd_bitmap
&
1147 card
->reg
->data_port_mask
)) ||
1148 (card
->has_control_mask
&& (card
->mp_rd_bitmap
&
1149 (~((u32
) CTRL_PORT_MASK
))))) {
1150 /* Some more data RX pending */
1151 dev_dbg(adapter
->dev
, "info: %s: not last packet\n", __func__
);
1153 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1154 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
)) {
1157 /* No room in Aggr buf, do rx aggr now */
1162 /* Rx aggr not in progress */
1167 /* No more data RX pending */
1168 dev_dbg(adapter
->dev
, "info: %s: last packet\n", __func__
);
1170 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1172 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
))
1175 /* No room in Aggr buf, do rx aggr now */
1183 dev_dbg(adapter
->dev
, "info: current packet aggregation\n");
1184 /* Curr pkt can be aggregated */
1185 mp_rx_aggr_setup(card
, skb
, port
);
1187 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card
) ||
1188 mp_rx_aggr_port_limit_reached(card
)) {
1189 dev_dbg(adapter
->dev
, "info: %s: aggregated packet "
1190 "limit reached\n", __func__
);
1191 /* No more pkts allowed in Aggr buf, rx it */
1197 /* do aggr RX now */
1198 dev_dbg(adapter
->dev
, "info: do_rx_aggr: num of packets: %d\n",
1199 card
->mpa_rx
.pkt_cnt
);
1201 if (card
->supports_sdio_new_mode
) {
1205 for (i
= 0, port_count
= 0; i
< card
->max_ports
; i
++)
1206 if (card
->mpa_rx
.ports
& BIT(i
))
1209 /* Reading data from "start_port + 0" to "start_port +
1210 * port_count -1", so decrease the count by 1
1213 mport
= (adapter
->ioport
| SDIO_MPA_ADDR_BASE
|
1214 (port_count
<< 8)) + card
->mpa_rx
.start_port
;
1216 mport
= (adapter
->ioport
| SDIO_MPA_ADDR_BASE
|
1217 (card
->mpa_rx
.ports
<< 4)) +
1218 card
->mpa_rx
.start_port
;
1221 if (mwifiex_read_data_sync(adapter
, card
->mpa_rx
.buf
,
1222 card
->mpa_rx
.buf_len
, mport
, 1))
1225 curr_ptr
= card
->mpa_rx
.buf
;
1227 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1229 /* get curr PKT len & type */
1230 pkt_len
= le16_to_cpu(*(__le16
*) &curr_ptr
[0]);
1231 pkt_type
= le16_to_cpu(*(__le16
*) &curr_ptr
[2]);
1233 /* copy pkt to deaggr buf */
1234 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1236 if ((pkt_type
== MWIFIEX_TYPE_DATA
) && (pkt_len
<=
1237 card
->mpa_rx
.len_arr
[pind
])) {
1239 memcpy(skb_deaggr
->data
, curr_ptr
, pkt_len
);
1241 skb_trim(skb_deaggr
, pkt_len
);
1243 /* Process de-aggr packet */
1244 mwifiex_decode_rx_packet(adapter
, skb_deaggr
,
1247 dev_err(adapter
->dev
, "wrong aggr pkt:"
1248 " type=%d len=%d max_len=%d\n",
1250 card
->mpa_rx
.len_arr
[pind
]);
1251 dev_kfree_skb_any(skb_deaggr
);
1253 curr_ptr
+= card
->mpa_rx
.len_arr
[pind
];
1255 MP_RX_AGGR_BUF_RESET(card
);
1260 dev_dbg(adapter
->dev
, "info: RX: port: %d, rx_len: %d\n",
1263 if (mwifiex_sdio_card_to_host(adapter
, &pkt_type
,
1264 skb
->data
, skb
->len
,
1265 adapter
->ioport
+ port
))
1268 mwifiex_decode_rx_packet(adapter
, skb
, pkt_type
);
1274 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1275 /* Multiport-aggregation transfer failed - cleanup */
1276 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1277 /* copy pkt to deaggr buf */
1278 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1279 dev_kfree_skb_any(skb_deaggr
);
1281 MP_RX_AGGR_BUF_RESET(card
);
1285 /* Single transfer pending. Free curr buff also */
1286 dev_kfree_skb_any(skb
);
1292 * This function checks the current interrupt status.
1294 * The following interrupts are checked and handled by this function -
1297 * - Packets received
1299 * Since the firmware does not generate download ready interrupt if the
1300 * port updated is command port only, command sent interrupt checking
1301 * should be done manually, and for every SDIO interrupt.
1303 * In case of Rx packets received, the packets are uploaded from card to
1304 * host and processed accordingly.
1306 static int mwifiex_process_int_status(struct mwifiex_adapter
*adapter
)
1308 struct sdio_mmc_card
*card
= adapter
->card
;
1309 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
1312 struct sk_buff
*skb
;
1313 u8 port
= CTRL_PORT
;
1314 u32 len_reg_l
, len_reg_u
;
1317 unsigned long flags
;
1321 spin_lock_irqsave(&adapter
->int_lock
, flags
);
1322 sdio_ireg
= adapter
->int_status
;
1323 adapter
->int_status
= 0;
1324 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
1329 /* Following interrupt is only for SDIO new mode */
1330 if (sdio_ireg
& DN_LD_CMD_PORT_HOST_INT_STATUS
&& adapter
->cmd_sent
)
1331 adapter
->cmd_sent
= false;
1333 /* Following interrupt is only for SDIO new mode */
1334 if (sdio_ireg
& UP_LD_CMD_PORT_HOST_INT_STATUS
) {
1337 /* read the len of control packet */
1338 rx_len
= card
->mp_regs
[CMD_RD_LEN_1
] << 8;
1339 rx_len
|= (u16
) card
->mp_regs
[CMD_RD_LEN_0
];
1340 rx_blocks
= DIV_ROUND_UP(rx_len
, MWIFIEX_SDIO_BLOCK_SIZE
);
1341 if (rx_len
<= INTF_HEADER_LEN
||
1342 (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
) >
1343 MWIFIEX_RX_DATA_BUF_SIZE
)
1345 rx_len
= (u16
) (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
);
1347 skb
= dev_alloc_skb(rx_len
);
1351 skb_put(skb
, rx_len
);
1353 if (mwifiex_sdio_card_to_host(adapter
, &pkt_type
, skb
->data
,
1354 skb
->len
, adapter
->ioport
|
1356 dev_err(adapter
->dev
,
1357 "%s: failed to card_to_host", __func__
);
1358 dev_kfree_skb_any(skb
);
1362 if ((pkt_type
!= MWIFIEX_TYPE_CMD
) &&
1363 (pkt_type
!= MWIFIEX_TYPE_EVENT
))
1364 dev_err(adapter
->dev
,
1365 "%s:Received wrong packet on cmd port",
1368 mwifiex_decode_rx_packet(adapter
, skb
, pkt_type
);
1371 if (sdio_ireg
& DN_LD_HOST_INT_STATUS
) {
1372 bitmap
= (u32
) card
->mp_regs
[reg
->wr_bitmap_l
];
1373 bitmap
|= ((u32
) card
->mp_regs
[reg
->wr_bitmap_u
]) << 8;
1374 if (card
->supports_sdio_new_mode
) {
1376 ((u32
) card
->mp_regs
[reg
->wr_bitmap_1l
]) << 16;
1378 ((u32
) card
->mp_regs
[reg
->wr_bitmap_1u
]) << 24;
1380 card
->mp_wr_bitmap
= bitmap
;
1382 dev_dbg(adapter
->dev
, "int: DNLD: wr_bitmap=0x%x\n",
1383 card
->mp_wr_bitmap
);
1384 if (adapter
->data_sent
&&
1385 (card
->mp_wr_bitmap
& card
->mp_data_port_mask
)) {
1386 dev_dbg(adapter
->dev
,
1387 "info: <--- Tx DONE Interrupt --->\n");
1388 adapter
->data_sent
= false;
1392 /* As firmware will not generate download ready interrupt if the port
1393 updated is command port only, cmd_sent should be done for any SDIO
1395 if (card
->has_control_mask
&& adapter
->cmd_sent
) {
1396 /* Check if firmware has attach buffer at command port and
1397 update just that in wr_bit_map. */
1398 card
->mp_wr_bitmap
|=
1399 (u32
) card
->mp_regs
[reg
->wr_bitmap_l
] & CTRL_PORT_MASK
;
1400 if (card
->mp_wr_bitmap
& CTRL_PORT_MASK
)
1401 adapter
->cmd_sent
= false;
1404 dev_dbg(adapter
->dev
, "info: cmd_sent=%d data_sent=%d\n",
1405 adapter
->cmd_sent
, adapter
->data_sent
);
1406 if (sdio_ireg
& UP_LD_HOST_INT_STATUS
) {
1407 bitmap
= (u32
) card
->mp_regs
[reg
->rd_bitmap_l
];
1408 bitmap
|= ((u32
) card
->mp_regs
[reg
->rd_bitmap_u
]) << 8;
1409 if (card
->supports_sdio_new_mode
) {
1411 ((u32
) card
->mp_regs
[reg
->rd_bitmap_1l
]) << 16;
1413 ((u32
) card
->mp_regs
[reg
->rd_bitmap_1u
]) << 24;
1415 card
->mp_rd_bitmap
= bitmap
;
1416 dev_dbg(adapter
->dev
, "int: UPLD: rd_bitmap=0x%x\n",
1417 card
->mp_rd_bitmap
);
1420 ret
= mwifiex_get_rd_port(adapter
, &port
);
1422 dev_dbg(adapter
->dev
,
1423 "info: no more rd_port available\n");
1426 len_reg_l
= reg
->rd_len_p0_l
+ (port
<< 1);
1427 len_reg_u
= reg
->rd_len_p0_u
+ (port
<< 1);
1428 rx_len
= ((u16
) card
->mp_regs
[len_reg_u
]) << 8;
1429 rx_len
|= (u16
) card
->mp_regs
[len_reg_l
];
1430 dev_dbg(adapter
->dev
, "info: RX: port=%d rx_len=%u\n",
1433 (rx_len
+ MWIFIEX_SDIO_BLOCK_SIZE
-
1434 1) / MWIFIEX_SDIO_BLOCK_SIZE
;
1435 if (rx_len
<= INTF_HEADER_LEN
||
1436 (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
) >
1437 MWIFIEX_RX_DATA_BUF_SIZE
) {
1438 dev_err(adapter
->dev
, "invalid rx_len=%d\n",
1442 rx_len
= (u16
) (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
);
1444 skb
= dev_alloc_skb(rx_len
);
1447 dev_err(adapter
->dev
, "%s: failed to alloc skb",
1452 skb_put(skb
, rx_len
);
1454 dev_dbg(adapter
->dev
, "info: rx_len = %d skb->len = %d\n",
1457 if (mwifiex_sdio_card_to_host_mp_aggr(adapter
, skb
,
1459 dev_err(adapter
->dev
, "card_to_host_mpa failed:"
1460 " int status=%#x\n", sdio_ireg
);
1470 if (mwifiex_read_reg(adapter
, CONFIGURATION_REG
, &cr
))
1471 dev_err(adapter
->dev
, "read CFG reg failed\n");
1473 dev_dbg(adapter
->dev
, "info: CFG reg val = %d\n", cr
);
1475 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, (cr
| 0x04)))
1476 dev_err(adapter
->dev
, "write CFG reg failed\n");
1478 dev_dbg(adapter
->dev
, "info: write success\n");
1480 if (mwifiex_read_reg(adapter
, CONFIGURATION_REG
, &cr
))
1481 dev_err(adapter
->dev
, "read CFG reg failed\n");
1483 dev_dbg(adapter
->dev
, "info: CFG reg val =%x\n", cr
);
1489 * This function aggregates transmission buffers in driver and downloads
1490 * the aggregated packet to card.
1492 * The individual packets are aggregated by copying into an aggregation
1493 * buffer and then downloaded to the card. Previous unsent packets in the
1494 * aggregation buffer are pre-copied first before new packets are added.
1495 * Aggregation is done till there is space left in the aggregation buffer,
1496 * or till new packets are available.
1498 * The function will only download the packet to the card when aggregation
1499 * stops, otherwise it will just aggregate the packet in aggregation buffer
1502 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter
*adapter
,
1503 u8
*payload
, u32 pkt_len
, u32 port
,
1506 struct sdio_mmc_card
*card
= adapter
->card
;
1508 s32 f_send_aggr_buf
= 0;
1509 s32 f_send_cur_buf
= 0;
1510 s32 f_precopy_cur_buf
= 0;
1511 s32 f_postcopy_cur_buf
= 0;
1514 if (!card
->mpa_tx
.enabled
||
1515 (card
->has_control_mask
&& (port
== CTRL_PORT
)) ||
1516 (card
->supports_sdio_new_mode
&& (port
== CMD_PORT_SLCT
))) {
1517 dev_dbg(adapter
->dev
, "info: %s: tx aggregation disabled\n",
1521 goto tx_curr_single
;
1525 /* More pkt in TX queue */
1526 dev_dbg(adapter
->dev
, "info: %s: more packets in queue.\n",
1529 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1530 if (!mp_tx_aggr_port_limit_reached(card
) &&
1531 MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
)) {
1532 f_precopy_cur_buf
= 1;
1534 if (!(card
->mp_wr_bitmap
&
1535 (1 << card
->curr_wr_port
)) ||
1536 !MP_TX_AGGR_BUF_HAS_ROOM(
1537 card
, pkt_len
+ next_pkt_len
))
1538 f_send_aggr_buf
= 1;
1540 /* No room in Aggr buf, send it */
1541 f_send_aggr_buf
= 1;
1543 if (mp_tx_aggr_port_limit_reached(card
) ||
1544 !(card
->mp_wr_bitmap
&
1545 (1 << card
->curr_wr_port
)))
1548 f_postcopy_cur_buf
= 1;
1551 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
) &&
1552 (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1553 f_precopy_cur_buf
= 1;
1558 /* Last pkt in TX queue */
1559 dev_dbg(adapter
->dev
, "info: %s: Last packet in Tx Queue.\n",
1562 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1563 /* some packs in Aggr buf already */
1564 f_send_aggr_buf
= 1;
1566 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
))
1567 f_precopy_cur_buf
= 1;
1569 /* No room in Aggr buf, send it */
1576 if (f_precopy_cur_buf
) {
1577 dev_dbg(adapter
->dev
, "data: %s: precopy current buffer\n",
1579 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1581 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card
) ||
1582 mp_tx_aggr_port_limit_reached(card
))
1583 /* No more pkts allowed in Aggr buf, send it */
1584 f_send_aggr_buf
= 1;
1587 if (f_send_aggr_buf
) {
1588 dev_dbg(adapter
->dev
, "data: %s: send aggr buffer: %d %d\n",
1590 card
->mpa_tx
.start_port
, card
->mpa_tx
.ports
);
1591 if (card
->supports_sdio_new_mode
) {
1595 for (i
= 0, port_count
= 0; i
< card
->max_ports
; i
++)
1596 if (card
->mpa_tx
.ports
& BIT(i
))
1599 /* Writing data from "start_port + 0" to "start_port +
1600 * port_count -1", so decrease the count by 1
1603 mport
= (adapter
->ioport
| SDIO_MPA_ADDR_BASE
|
1604 (port_count
<< 8)) + card
->mpa_tx
.start_port
;
1606 mport
= (adapter
->ioport
| SDIO_MPA_ADDR_BASE
|
1607 (card
->mpa_tx
.ports
<< 4)) +
1608 card
->mpa_tx
.start_port
;
1611 ret
= mwifiex_write_data_to_card(adapter
, card
->mpa_tx
.buf
,
1612 card
->mpa_tx
.buf_len
, mport
);
1614 MP_TX_AGGR_BUF_RESET(card
);
1618 if (f_send_cur_buf
) {
1619 dev_dbg(adapter
->dev
, "data: %s: send current buffer %d\n",
1621 ret
= mwifiex_write_data_to_card(adapter
, payload
, pkt_len
,
1622 adapter
->ioport
+ port
);
1625 if (f_postcopy_cur_buf
) {
1626 dev_dbg(adapter
->dev
, "data: %s: postcopy current buffer\n",
1628 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1635 * This function downloads data from driver to card.
1637 * Both commands and data packets are transferred to the card by this
1640 * This function adds the SDIO specific header to the front of the buffer
1641 * before transferring. The header contains the length of the packet and
1642 * the type. The firmware handles the packets based upon this set type.
1644 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter
*adapter
,
1645 u8 type
, struct sk_buff
*skb
,
1646 struct mwifiex_tx_param
*tx_param
)
1648 struct sdio_mmc_card
*card
= adapter
->card
;
1652 u32 port
= CTRL_PORT
;
1653 u8
*payload
= (u8
*)skb
->data
;
1654 u32 pkt_len
= skb
->len
;
1656 /* Allocate buffer and copy payload */
1657 blk_size
= MWIFIEX_SDIO_BLOCK_SIZE
;
1658 buf_block_len
= (pkt_len
+ blk_size
- 1) / blk_size
;
1659 *(__le16
*)&payload
[0] = cpu_to_le16((u16
)pkt_len
);
1660 *(__le16
*)&payload
[2] = cpu_to_le16(type
);
1663 * This is SDIO specific header
1665 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1666 * MWIFIEX_TYPE_EVENT = 3)
1668 if (type
== MWIFIEX_TYPE_DATA
) {
1669 ret
= mwifiex_get_wr_port_data(adapter
, &port
);
1671 dev_err(adapter
->dev
, "%s: no wr_port available\n",
1676 adapter
->cmd_sent
= true;
1677 /* Type must be MWIFIEX_TYPE_CMD */
1679 if (pkt_len
<= INTF_HEADER_LEN
||
1680 pkt_len
> MWIFIEX_UPLD_SIZE
)
1681 dev_err(adapter
->dev
, "%s: payload=%p, nb=%d\n",
1682 __func__
, payload
, pkt_len
);
1684 if (card
->supports_sdio_new_mode
)
1685 port
= CMD_PORT_SLCT
;
1688 /* Transfer data to card */
1689 pkt_len
= buf_block_len
* blk_size
;
1692 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1693 port
, tx_param
->next_pkt_len
1696 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1700 if (type
== MWIFIEX_TYPE_CMD
)
1701 adapter
->cmd_sent
= false;
1702 if (type
== MWIFIEX_TYPE_DATA
) {
1703 adapter
->data_sent
= false;
1704 /* restore curr_wr_port in error cases */
1705 card
->curr_wr_port
= port
;
1706 card
->mp_wr_bitmap
|= (u32
)(1 << card
->curr_wr_port
);
1709 if (type
== MWIFIEX_TYPE_DATA
) {
1710 if (!(card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1711 adapter
->data_sent
= true;
1713 adapter
->data_sent
= false;
1721 * This function allocates the MPA Tx and Rx buffers.
1723 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter
*adapter
,
1724 u32 mpa_tx_buf_size
, u32 mpa_rx_buf_size
)
1726 struct sdio_mmc_card
*card
= adapter
->card
;
1729 card
->mpa_tx
.buf
= kzalloc(mpa_tx_buf_size
, GFP_KERNEL
);
1730 if (!card
->mpa_tx
.buf
) {
1735 card
->mpa_tx
.buf_size
= mpa_tx_buf_size
;
1737 card
->mpa_rx
.buf
= kzalloc(mpa_rx_buf_size
, GFP_KERNEL
);
1738 if (!card
->mpa_rx
.buf
) {
1743 card
->mpa_rx
.buf_size
= mpa_rx_buf_size
;
1747 kfree(card
->mpa_tx
.buf
);
1748 kfree(card
->mpa_rx
.buf
);
1755 * This function unregisters the SDIO device.
1757 * The SDIO IRQ is released, the function is disabled and driver
1758 * data is set to null.
1761 mwifiex_unregister_dev(struct mwifiex_adapter
*adapter
)
1763 struct sdio_mmc_card
*card
= adapter
->card
;
1765 if (adapter
->card
) {
1766 sdio_claim_host(card
->func
);
1767 sdio_disable_func(card
->func
);
1768 sdio_release_host(card
->func
);
1773 * This function registers the SDIO device.
1775 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1777 static int mwifiex_register_dev(struct mwifiex_adapter
*adapter
)
1780 struct sdio_mmc_card
*card
= adapter
->card
;
1781 struct sdio_func
*func
= card
->func
;
1783 /* save adapter pointer in card */
1784 card
->adapter
= adapter
;
1785 adapter
->tx_buf_size
= card
->tx_buf_size
;
1787 sdio_claim_host(func
);
1789 /* Set block size */
1790 ret
= sdio_set_block_size(card
->func
, MWIFIEX_SDIO_BLOCK_SIZE
);
1791 sdio_release_host(func
);
1793 pr_err("cannot set SDIO block size\n");
1798 adapter
->dev
= &func
->dev
;
1800 strcpy(adapter
->fw_name
, card
->firmware
);
1801 adapter
->mem_type_mapping_tbl
= mem_type_mapping_tbl
;
1802 adapter
->num_mem_types
= ARRAY_SIZE(mem_type_mapping_tbl
);
1808 * This function initializes the SDIO driver.
1810 * The following initializations steps are followed -
1811 * - Read the Host interrupt status register to acknowledge
1812 * the first interrupt got from bootloader
1813 * - Disable host interrupt mask register
1815 * - Initialize SDIO variables in card
1816 * - Allocate MP registers
1817 * - Allocate MPA Tx and Rx buffers
1819 static int mwifiex_init_sdio(struct mwifiex_adapter
*adapter
)
1821 struct sdio_mmc_card
*card
= adapter
->card
;
1822 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
1826 sdio_set_drvdata(card
->func
, card
);
1829 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1830 * from the bootloader. If we don't do this we get a interrupt
1831 * as soon as we register the irq.
1833 mwifiex_read_reg(adapter
, HOST_INTSTATUS_REG
, &sdio_ireg
);
1835 /* Get SDIO ioport */
1836 mwifiex_init_sdio_ioport(adapter
);
1838 /* Initialize SDIO variables in card */
1839 card
->mp_rd_bitmap
= 0;
1840 card
->mp_wr_bitmap
= 0;
1841 card
->curr_rd_port
= reg
->start_rd_port
;
1842 card
->curr_wr_port
= reg
->start_wr_port
;
1844 card
->mp_data_port_mask
= reg
->data_port_mask
;
1846 card
->mpa_tx
.buf_len
= 0;
1847 card
->mpa_tx
.pkt_cnt
= 0;
1848 card
->mpa_tx
.start_port
= 0;
1850 card
->mpa_tx
.enabled
= 1;
1851 card
->mpa_tx
.pkt_aggr_limit
= card
->mp_agg_pkt_limit
;
1853 card
->mpa_rx
.buf_len
= 0;
1854 card
->mpa_rx
.pkt_cnt
= 0;
1855 card
->mpa_rx
.start_port
= 0;
1857 card
->mpa_rx
.enabled
= 1;
1858 card
->mpa_rx
.pkt_aggr_limit
= card
->mp_agg_pkt_limit
;
1860 /* Allocate buffers for SDIO MP-A */
1861 card
->mp_regs
= kzalloc(reg
->max_mp_regs
, GFP_KERNEL
);
1865 /* Allocate skb pointer buffers */
1866 card
->mpa_rx
.skb_arr
= kzalloc((sizeof(void *)) *
1867 card
->mp_agg_pkt_limit
, GFP_KERNEL
);
1868 card
->mpa_rx
.len_arr
= kzalloc(sizeof(*card
->mpa_rx
.len_arr
) *
1869 card
->mp_agg_pkt_limit
, GFP_KERNEL
);
1870 ret
= mwifiex_alloc_sdio_mpa_buffers(adapter
,
1871 card
->mp_tx_agg_buf_size
,
1872 card
->mp_rx_agg_buf_size
);
1874 dev_err(adapter
->dev
, "failed to alloc sdio mp-a buffers\n");
1875 kfree(card
->mp_regs
);
1883 * This function resets the MPA Tx and Rx buffers.
1885 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter
*adapter
)
1887 struct sdio_mmc_card
*card
= adapter
->card
;
1889 MP_TX_AGGR_BUF_RESET(card
);
1890 MP_RX_AGGR_BUF_RESET(card
);
1894 * This function cleans up the allocated card buffers.
1896 * The following are freed by this function -
1901 static void mwifiex_cleanup_sdio(struct mwifiex_adapter
*adapter
)
1903 struct sdio_mmc_card
*card
= adapter
->card
;
1905 kfree(card
->mp_regs
);
1906 kfree(card
->mpa_rx
.skb_arr
);
1907 kfree(card
->mpa_rx
.len_arr
);
1908 kfree(card
->mpa_tx
.buf
);
1909 kfree(card
->mpa_rx
.buf
);
1910 sdio_set_drvdata(card
->func
, NULL
);
1915 * This function updates the MP end port in card.
1918 mwifiex_update_mp_end_port(struct mwifiex_adapter
*adapter
, u16 port
)
1920 struct sdio_mmc_card
*card
= adapter
->card
;
1921 const struct mwifiex_sdio_card_reg
*reg
= card
->reg
;
1924 card
->mp_end_port
= port
;
1926 card
->mp_data_port_mask
= reg
->data_port_mask
;
1928 if (reg
->start_wr_port
) {
1929 for (i
= 1; i
<= card
->max_ports
- card
->mp_end_port
; i
++)
1930 card
->mp_data_port_mask
&=
1931 ~(1 << (card
->max_ports
- i
));
1934 card
->curr_wr_port
= reg
->start_wr_port
;
1936 dev_dbg(adapter
->dev
, "cmd: mp_end_port %d, data port mask 0x%x\n",
1937 port
, card
->mp_data_port_mask
);
1940 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter
*adapter
)
1942 struct sdio_mmc_card
*card
= adapter
->card
;
1943 struct mmc_host
*target
= card
->func
->card
->host
;
1945 /* The actual reset operation must be run outside of driver thread.
1946 * This is because mmc_remove_host() will cause the device to be
1947 * instantly destroyed, and the driver then needs to end its thread,
1948 * leading to a deadlock.
1950 * We run it in a totally independent workqueue.
1953 pr_err("Resetting card...\n");
1954 mmc_remove_host(target
);
1955 /* 20ms delay is based on experiment with sdhci controller */
1957 mmc_add_host(target
);
1960 /* This function read/write firmware */
1962 rdwr_status
mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter
*adapter
,
1965 struct sdio_mmc_card
*card
= adapter
->card
;
1969 sdio_writeb(card
->func
, FW_DUMP_HOST_READY
, card
->reg
->fw_dump_ctrl
,
1972 dev_err(adapter
->dev
, "SDIO Write ERR\n");
1973 return RDWR_STATUS_FAILURE
;
1975 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
1976 ctrl_data
= sdio_readb(card
->func
, card
->reg
->fw_dump_ctrl
,
1979 dev_err(adapter
->dev
, "SDIO read err\n");
1980 return RDWR_STATUS_FAILURE
;
1982 if (ctrl_data
== FW_DUMP_DONE
)
1984 if (doneflag
&& ctrl_data
== doneflag
)
1985 return RDWR_STATUS_DONE
;
1986 if (ctrl_data
!= FW_DUMP_HOST_READY
) {
1987 dev_info(adapter
->dev
,
1988 "The ctrl reg was changed, re-try again!\n");
1989 sdio_writeb(card
->func
, FW_DUMP_HOST_READY
,
1990 card
->reg
->fw_dump_ctrl
, &ret
);
1992 dev_err(adapter
->dev
, "SDIO write err\n");
1993 return RDWR_STATUS_FAILURE
;
1996 usleep_range(100, 200);
1998 if (ctrl_data
== FW_DUMP_HOST_READY
) {
1999 dev_err(adapter
->dev
, "Fail to pull ctrl_data\n");
2000 return RDWR_STATUS_FAILURE
;
2003 return RDWR_STATUS_SUCCESS
;
2006 /* This function dump firmware memory to file */
2007 static void mwifiex_sdio_fw_dump_work(struct work_struct
*work
)
2009 struct mwifiex_adapter
*adapter
=
2010 container_of(work
, struct mwifiex_adapter
, iface_work
);
2011 struct sdio_mmc_card
*card
= adapter
->card
;
2013 unsigned int reg
, reg_start
, reg_end
;
2014 u8
*dbg_ptr
, *end_ptr
, dump_num
, idx
, i
, read_reg
, doneflag
= 0;
2016 enum rdwr_status stat
;
2018 static char *env
[] = { "DRIVER=mwifiex_sdio", "EVENT=fw_dump", NULL
};
2020 if (!card
->supports_fw_dump
)
2023 for (idx
= 0; idx
< ARRAY_SIZE(mem_type_mapping_tbl
); idx
++) {
2024 struct memory_type_mapping
*entry
= &mem_type_mapping_tbl
[idx
];
2026 if (entry
->mem_ptr
) {
2027 vfree(entry
->mem_ptr
);
2028 entry
->mem_ptr
= NULL
;
2030 entry
->mem_size
= 0;
2033 mwifiex_pm_wakeup_card(adapter
);
2034 sdio_claim_host(card
->func
);
2036 do_gettimeofday(&t
);
2037 dev_info(adapter
->dev
, "== mwifiex firmware dump start: %u.%06u ==\n",
2038 (u32
)t
.tv_sec
, (u32
)t
.tv_usec
);
2040 stat
= mwifiex_sdio_rdwr_firmware(adapter
, doneflag
);
2041 if (stat
== RDWR_STATUS_FAILURE
)
2044 reg
= card
->reg
->fw_dump_start
;
2045 /* Read the number of the memories which will dump */
2046 dump_num
= sdio_readb(card
->func
, reg
, &ret
);
2048 dev_err(adapter
->dev
, "SDIO read memory length err\n");
2052 /* Read the length of every memory which will dump */
2053 for (idx
= 0; idx
< dump_num
; idx
++) {
2054 struct memory_type_mapping
*entry
= &mem_type_mapping_tbl
[idx
];
2056 stat
= mwifiex_sdio_rdwr_firmware(adapter
, doneflag
);
2057 if (stat
== RDWR_STATUS_FAILURE
)
2061 reg
= card
->reg
->fw_dump_start
;
2062 for (i
= 0; i
< 4; i
++) {
2063 read_reg
= sdio_readb(card
->func
, reg
, &ret
);
2065 dev_err(adapter
->dev
, "SDIO read err\n");
2068 memory_size
|= (read_reg
<< i
*8);
2072 if (memory_size
== 0) {
2073 dev_info(adapter
->dev
, "Firmware dump Finished!\n");
2077 dev_info(adapter
->dev
,
2078 "%s_SIZE=0x%x\n", entry
->mem_name
, memory_size
);
2079 entry
->mem_ptr
= vmalloc(memory_size
+ 1);
2080 entry
->mem_size
= memory_size
;
2081 if (!entry
->mem_ptr
) {
2082 dev_err(adapter
->dev
, "Vmalloc %s failed\n",
2086 dbg_ptr
= entry
->mem_ptr
;
2087 end_ptr
= dbg_ptr
+ memory_size
;
2089 doneflag
= entry
->done_flag
;
2090 do_gettimeofday(&t
);
2091 dev_info(adapter
->dev
, "Start %s output %u.%06u, please wait...\n",
2092 entry
->mem_name
, (u32
)t
.tv_sec
, (u32
)t
.tv_usec
);
2095 stat
= mwifiex_sdio_rdwr_firmware(adapter
, doneflag
);
2096 if (stat
== RDWR_STATUS_FAILURE
)
2099 reg_start
= card
->reg
->fw_dump_start
;
2100 reg_end
= card
->reg
->fw_dump_end
;
2101 for (reg
= reg_start
; reg
<= reg_end
; reg
++) {
2102 *dbg_ptr
= sdio_readb(card
->func
, reg
, &ret
);
2104 dev_err(adapter
->dev
,
2108 if (dbg_ptr
< end_ptr
)
2111 dev_err(adapter
->dev
,
2112 "Allocated buf not enough\n");
2115 if (stat
!= RDWR_STATUS_DONE
)
2118 dev_info(adapter
->dev
, "%s done: size=0x%tx\n",
2119 entry
->mem_name
, dbg_ptr
- entry
->mem_ptr
);
2123 do_gettimeofday(&t
);
2124 dev_info(adapter
->dev
, "== mwifiex firmware dump end: %u.%06u ==\n",
2125 (u32
)t
.tv_sec
, (u32
)t
.tv_usec
);
2127 kobject_uevent_env(&adapter
->wiphy
->dev
.kobj
, KOBJ_CHANGE
, env
);
2130 sdio_release_host(card
->func
);
2131 adapter
->curr_mem_idx
= 0;
2134 static void mwifiex_sdio_work(struct work_struct
*work
)
2136 struct mwifiex_adapter
*adapter
=
2137 container_of(work
, struct mwifiex_adapter
, iface_work
);
2139 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET
,
2140 &adapter
->iface_work_flags
))
2141 mwifiex_sdio_card_reset_work(adapter
);
2142 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_FW_DUMP
,
2143 &adapter
->iface_work_flags
))
2144 mwifiex_sdio_fw_dump_work(work
);
2147 /* This function resets the card */
2148 static void mwifiex_sdio_card_reset(struct mwifiex_adapter
*adapter
)
2150 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET
, &adapter
->iface_work_flags
))
2153 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET
, &adapter
->iface_work_flags
);
2155 schedule_work(&adapter
->iface_work
);
2158 /* This function dumps FW information */
2159 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter
*adapter
)
2161 if (test_bit(MWIFIEX_IFACE_WORK_FW_DUMP
, &adapter
->iface_work_flags
))
2164 set_bit(MWIFIEX_IFACE_WORK_FW_DUMP
, &adapter
->iface_work_flags
);
2165 schedule_work(&adapter
->iface_work
);
2168 static struct mwifiex_if_ops sdio_ops
= {
2169 .init_if
= mwifiex_init_sdio
,
2170 .cleanup_if
= mwifiex_cleanup_sdio
,
2171 .check_fw_status
= mwifiex_check_fw_status
,
2172 .prog_fw
= mwifiex_prog_fw_w_helper
,
2173 .register_dev
= mwifiex_register_dev
,
2174 .unregister_dev
= mwifiex_unregister_dev
,
2175 .enable_int
= mwifiex_sdio_enable_host_int
,
2176 .disable_int
= mwifiex_sdio_disable_host_int
,
2177 .process_int_status
= mwifiex_process_int_status
,
2178 .host_to_card
= mwifiex_sdio_host_to_card
,
2179 .wakeup
= mwifiex_pm_wakeup_card
,
2180 .wakeup_complete
= mwifiex_pm_wakeup_card_complete
,
2183 .update_mp_end_port
= mwifiex_update_mp_end_port
,
2184 .cleanup_mpa_buf
= mwifiex_cleanup_mpa_buf
,
2185 .cmdrsp_complete
= mwifiex_sdio_cmdrsp_complete
,
2186 .event_complete
= mwifiex_sdio_event_complete
,
2187 .card_reset
= mwifiex_sdio_card_reset
,
2188 .iface_work
= mwifiex_sdio_work
,
2189 .fw_dump
= mwifiex_sdio_fw_dump
,
2193 * This function initializes the SDIO driver.
2195 * This initiates the semaphore and registers the device with
2199 mwifiex_sdio_init_module(void)
2201 sema_init(&add_remove_card_sem
, 1);
2203 /* Clear the flag in case user removes the card. */
2206 return sdio_register_driver(&mwifiex_sdio
);
2210 * This function cleans up the SDIO driver.
2212 * The following major steps are followed for cleanup -
2213 * - Resume the device if its suspended
2214 * - Disconnect the device if connected
2215 * - Shutdown the firmware
2216 * - Unregister the device from SDIO bus.
2219 mwifiex_sdio_cleanup_module(void)
2221 if (!down_interruptible(&add_remove_card_sem
))
2222 up(&add_remove_card_sem
);
2224 /* Set the flag as user is removing this module. */
2227 sdio_unregister_driver(&mwifiex_sdio
);
2230 module_init(mwifiex_sdio_init_module
);
2231 module_exit(mwifiex_sdio_cleanup_module
);
2233 MODULE_AUTHOR("Marvell International Ltd.");
2234 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION
);
2235 MODULE_VERSION(SDIO_VERSION
);
2236 MODULE_LICENSE("GPL v2");
2237 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME
);
2238 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME
);
2239 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME
);
2240 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME
);