2 * Marvell Wireless LAN device driver: SDIO specific handling
4 * Copyright (C) 2011, 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 int mwifiex_sdio_resume(struct device
*dev
);
58 * This function probes an mwifiex device and registers it. It allocates
59 * the card structure, enables SDIO function number and initiates the
60 * device registration and initialization procedure by adding a logical
64 mwifiex_sdio_probe(struct sdio_func
*func
, const struct sdio_device_id
*id
)
67 struct sdio_mmc_card
*card
= NULL
;
69 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
70 func
->vendor
, func
->device
, func
->class, func
->num
);
72 card
= kzalloc(sizeof(struct sdio_mmc_card
), GFP_KERNEL
);
78 func
->card
->quirks
|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE
;
80 sdio_claim_host(func
);
81 ret
= sdio_enable_func(func
);
82 sdio_release_host(func
);
85 pr_err("%s: failed to enable function\n", __func__
);
90 if (mwifiex_add_card(card
, &add_remove_card_sem
, &sdio_ops
,
92 pr_err("%s: add card failed\n", __func__
);
94 sdio_claim_host(func
);
95 ret
= sdio_disable_func(func
);
96 sdio_release_host(func
);
106 * This function removes the interface and frees up the card structure.
109 mwifiex_sdio_remove(struct sdio_func
*func
)
111 struct sdio_mmc_card
*card
;
112 struct mwifiex_adapter
*adapter
;
113 struct mwifiex_private
*priv
;
116 pr_debug("info: SDIO func num=%d\n", func
->num
);
118 card
= sdio_get_drvdata(func
);
122 adapter
= card
->adapter
;
123 if (!adapter
|| !adapter
->priv_num
)
126 /* In case driver is removed when asynchronous FW load is in progress */
127 wait_for_completion(&adapter
->fw_load
);
130 if (adapter
->is_suspended
)
131 mwifiex_sdio_resume(adapter
->dev
);
133 for (i
= 0; i
< adapter
->priv_num
; i
++)
134 if ((GET_BSS_ROLE(adapter
->priv
[i
]) ==
135 MWIFIEX_BSS_ROLE_STA
) &&
136 adapter
->priv
[i
]->media_connected
)
137 mwifiex_deauthenticate(adapter
->priv
[i
], NULL
);
139 priv
= mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_ANY
);
140 mwifiex_disable_auto_ds(priv
);
141 mwifiex_init_shutdown_fw(priv
, MWIFIEX_FUNC_SHUTDOWN
);
144 mwifiex_remove_card(card
->adapter
, &add_remove_card_sem
);
151 * Kernel needs to suspend all functions separately. Therefore all
152 * registered functions must have drivers with suspend and resume
153 * methods. Failing that the kernel simply removes the whole card.
155 * If already not suspended, this function allocates and sends a host
156 * sleep activate request to the firmware and turns off the traffic.
158 static int mwifiex_sdio_suspend(struct device
*dev
)
160 struct sdio_func
*func
= dev_to_sdio_func(dev
);
161 struct sdio_mmc_card
*card
;
162 struct mwifiex_adapter
*adapter
;
163 mmc_pm_flag_t pm_flag
= 0;
168 pm_flag
= sdio_get_host_pm_caps(func
);
169 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
170 sdio_func_id(func
), pm_flag
);
171 if (!(pm_flag
& MMC_PM_KEEP_POWER
)) {
172 pr_err("%s: cannot remain alive while host is"
173 " suspended\n", sdio_func_id(func
));
177 card
= sdio_get_drvdata(func
);
178 if (!card
|| !card
->adapter
) {
179 pr_err("suspend: invalid card or adapter\n");
183 pr_err("suspend: sdio_func is not specified\n");
187 adapter
= card
->adapter
;
189 /* Enable the Host Sleep */
190 if (!mwifiex_enable_hs(adapter
)) {
191 dev_err(adapter
->dev
, "cmd: failed to suspend\n");
195 dev_dbg(adapter
->dev
, "cmd: suspend with MMC_PM_KEEP_POWER\n");
196 ret
= sdio_set_host_pm_flags(func
, MMC_PM_KEEP_POWER
);
198 /* Indicate device suspended */
199 adapter
->is_suspended
= true;
201 for (i
= 0; i
< adapter
->priv_num
; i
++)
202 netif_carrier_off(adapter
->priv
[i
]->netdev
);
210 * Kernel needs to suspend all functions separately. Therefore all
211 * registered functions must have drivers with suspend and resume
212 * methods. Failing that the kernel simply removes the whole card.
214 * If already not resumed, this function turns on the traffic and
215 * sends a host sleep cancel request to the firmware.
217 static int mwifiex_sdio_resume(struct device
*dev
)
219 struct sdio_func
*func
= dev_to_sdio_func(dev
);
220 struct sdio_mmc_card
*card
;
221 struct mwifiex_adapter
*adapter
;
222 mmc_pm_flag_t pm_flag
= 0;
226 pm_flag
= sdio_get_host_pm_caps(func
);
227 card
= sdio_get_drvdata(func
);
228 if (!card
|| !card
->adapter
) {
229 pr_err("resume: invalid card or adapter\n");
233 pr_err("resume: sdio_func is not specified\n");
237 adapter
= card
->adapter
;
239 if (!adapter
->is_suspended
) {
240 dev_warn(adapter
->dev
, "device already resumed\n");
244 adapter
->is_suspended
= false;
246 for (i
= 0; i
< adapter
->priv_num
; i
++)
247 if (adapter
->priv
[i
]->media_connected
)
248 netif_carrier_on(adapter
->priv
[i
]->netdev
);
250 /* Disable Host Sleep */
251 mwifiex_cancel_hs(mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
257 /* Device ID for SD8786 */
258 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
259 /* Device ID for SD8787 */
260 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
261 /* Device ID for SD8797 */
262 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
265 static const struct sdio_device_id mwifiex_ids
[] = {
266 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8786
)},
267 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8787
)},
268 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8797
)},
272 MODULE_DEVICE_TABLE(sdio
, mwifiex_ids
);
274 static const struct dev_pm_ops mwifiex_sdio_pm_ops
= {
275 .suspend
= mwifiex_sdio_suspend
,
276 .resume
= mwifiex_sdio_resume
,
279 static struct sdio_driver mwifiex_sdio
= {
280 .name
= "mwifiex_sdio",
281 .id_table
= mwifiex_ids
,
282 .probe
= mwifiex_sdio_probe
,
283 .remove
= mwifiex_sdio_remove
,
285 .owner
= THIS_MODULE
,
286 .pm
= &mwifiex_sdio_pm_ops
,
291 * This function writes data into SDIO card register.
294 mwifiex_write_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u32 data
)
296 struct sdio_mmc_card
*card
= adapter
->card
;
299 sdio_claim_host(card
->func
);
300 sdio_writeb(card
->func
, (u8
) data
, reg
, &ret
);
301 sdio_release_host(card
->func
);
307 * This function reads data from SDIO card register.
310 mwifiex_read_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u32
*data
)
312 struct sdio_mmc_card
*card
= adapter
->card
;
316 sdio_claim_host(card
->func
);
317 val
= sdio_readb(card
->func
, reg
, &ret
);
318 sdio_release_host(card
->func
);
326 * This function writes multiple data into SDIO card memory.
328 * This does not work in suspended mode.
331 mwifiex_write_data_sync(struct mwifiex_adapter
*adapter
,
332 u8
*buffer
, u32 pkt_len
, u32 port
)
334 struct sdio_mmc_card
*card
= adapter
->card
;
337 (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
: BLOCK_MODE
;
338 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
341 BLOCK_MODE
) ? (pkt_len
/
342 MWIFIEX_SDIO_BLOCK_SIZE
) : pkt_len
;
343 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
345 if (adapter
->is_suspended
) {
346 dev_err(adapter
->dev
,
347 "%s: not allowed while suspended\n", __func__
);
351 sdio_claim_host(card
->func
);
353 if (!sdio_writesb(card
->func
, ioport
, buffer
, blk_cnt
* blk_size
))
356 sdio_release_host(card
->func
);
362 * This function reads multiple data from SDIO card memory.
364 static int mwifiex_read_data_sync(struct mwifiex_adapter
*adapter
, u8
*buffer
,
365 u32 len
, u32 port
, u8 claim
)
367 struct sdio_mmc_card
*card
= adapter
->card
;
369 u8 blk_mode
= (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
371 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
372 u32 blk_cnt
= (blk_mode
== BLOCK_MODE
) ? (len
/ MWIFIEX_SDIO_BLOCK_SIZE
)
374 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
377 sdio_claim_host(card
->func
);
379 if (!sdio_readsb(card
->func
, buffer
, ioport
, blk_cnt
* blk_size
))
383 sdio_release_host(card
->func
);
389 * This function wakes up the card.
391 * A host power up command is written to the card configuration
392 * register to wake up the card.
394 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter
*adapter
)
396 dev_dbg(adapter
->dev
, "event: wakeup device...\n");
398 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, HOST_POWER_UP
);
402 * This function is called after the card has woken up.
404 * The card configuration register is reset.
406 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter
*adapter
)
408 dev_dbg(adapter
->dev
, "cmd: wakeup device completed\n");
410 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0);
414 * This function initializes the IO ports.
416 * The following operations are performed -
417 * - Read the IO ports (0, 1 and 2)
418 * - Set host interrupt Reset-To-Read to clear
419 * - Set auto re-enable interrupt
421 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter
*adapter
)
427 /* Read the IO port */
428 if (!mwifiex_read_reg(adapter
, IO_PORT_0_REG
, ®
))
429 adapter
->ioport
|= (reg
& 0xff);
433 if (!mwifiex_read_reg(adapter
, IO_PORT_1_REG
, ®
))
434 adapter
->ioport
|= ((reg
& 0xff) << 8);
438 if (!mwifiex_read_reg(adapter
, IO_PORT_2_REG
, ®
))
439 adapter
->ioport
|= ((reg
& 0xff) << 16);
443 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter
->ioport
);
445 /* Set Host interrupt reset to read to clear */
446 if (!mwifiex_read_reg(adapter
, HOST_INT_RSR_REG
, ®
))
447 mwifiex_write_reg(adapter
, HOST_INT_RSR_REG
,
448 reg
| SDIO_INT_MASK
);
452 /* Dnld/Upld ready set to auto reset */
453 if (!mwifiex_read_reg(adapter
, CARD_MISC_CFG_REG
, ®
))
454 mwifiex_write_reg(adapter
, CARD_MISC_CFG_REG
,
455 reg
| AUTO_RE_ENABLE_INT
);
463 * This function sends data to the card.
465 static int mwifiex_write_data_to_card(struct mwifiex_adapter
*adapter
,
466 u8
*payload
, u32 pkt_len
, u32 port
)
472 ret
= mwifiex_write_data_sync(adapter
, payload
, pkt_len
, port
);
475 dev_err(adapter
->dev
, "host_to_card, write iomem"
476 " (%d) failed: %d\n", i
, ret
);
477 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
478 dev_err(adapter
->dev
, "write CFG reg failed\n");
481 if (i
> MAX_WRITE_IOMEM_RETRY
)
490 * This function gets the read port.
492 * If control port bit is set in MP read bitmap, the control port
493 * is returned, otherwise the current read port is returned and
494 * the value is increased (provided it does not reach the maximum
495 * limit, in which case it is reset to 1)
497 static int mwifiex_get_rd_port(struct mwifiex_adapter
*adapter
, u8
*port
)
499 struct sdio_mmc_card
*card
= adapter
->card
;
500 u16 rd_bitmap
= card
->mp_rd_bitmap
;
502 dev_dbg(adapter
->dev
, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap
);
504 if (!(rd_bitmap
& (CTRL_PORT_MASK
| DATA_PORT_MASK
)))
507 if (card
->mp_rd_bitmap
& CTRL_PORT_MASK
) {
508 card
->mp_rd_bitmap
&= (u16
) (~CTRL_PORT_MASK
);
510 dev_dbg(adapter
->dev
, "data: port=%d mp_rd_bitmap=0x%04x\n",
511 *port
, card
->mp_rd_bitmap
);
513 if (card
->mp_rd_bitmap
& (1 << card
->curr_rd_port
)) {
514 card
->mp_rd_bitmap
&= (u16
)
515 (~(1 << card
->curr_rd_port
));
516 *port
= card
->curr_rd_port
;
518 if (++card
->curr_rd_port
== MAX_PORT
)
519 card
->curr_rd_port
= 1;
524 dev_dbg(adapter
->dev
,
525 "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n",
526 *port
, rd_bitmap
, card
->mp_rd_bitmap
);
532 * This function gets the write port for data.
534 * The current write port is returned if available and the value is
535 * increased (provided it does not reach the maximum limit, in which
536 * case it is reset to 1)
538 static int mwifiex_get_wr_port_data(struct mwifiex_adapter
*adapter
, u8
*port
)
540 struct sdio_mmc_card
*card
= adapter
->card
;
541 u16 wr_bitmap
= card
->mp_wr_bitmap
;
543 dev_dbg(adapter
->dev
, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap
);
545 if (!(wr_bitmap
& card
->mp_data_port_mask
))
548 if (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)) {
549 card
->mp_wr_bitmap
&= (u16
) (~(1 << card
->curr_wr_port
));
550 *port
= card
->curr_wr_port
;
551 if (++card
->curr_wr_port
== card
->mp_end_port
)
552 card
->curr_wr_port
= 1;
554 adapter
->data_sent
= true;
558 if (*port
== CTRL_PORT
) {
559 dev_err(adapter
->dev
, "invalid data port=%d cur port=%d"
560 " mp_wr_bitmap=0x%04x -> 0x%04x\n",
561 *port
, card
->curr_wr_port
, wr_bitmap
,
566 dev_dbg(adapter
->dev
, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n",
567 *port
, wr_bitmap
, card
->mp_wr_bitmap
);
573 * This function polls the card status.
576 mwifiex_sdio_poll_card_status(struct mwifiex_adapter
*adapter
, u8 bits
)
581 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
582 if (mwifiex_read_reg(adapter
, CARD_STATUS_REG
, &cs
))
584 else if ((cs
& bits
) == bits
)
587 usleep_range(10, 20);
590 dev_err(adapter
->dev
, "poll card status failed, tries = %d\n", tries
);
596 * This function reads the firmware status.
599 mwifiex_sdio_read_fw_status(struct mwifiex_adapter
*adapter
, u16
*dat
)
603 if (mwifiex_read_reg(adapter
, CARD_FW_STATUS0_REG
, &fws0
))
606 if (mwifiex_read_reg(adapter
, CARD_FW_STATUS1_REG
, &fws1
))
609 *dat
= (u16
) ((fws1
<< 8) | fws0
);
615 * This function disables the host interrupt.
617 * The host interrupt mask is read, the disable bit is reset and
618 * written back to the card host interrupt mask register.
620 static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter
*adapter
)
624 /* Read back the host_int_mask register */
625 if (mwifiex_read_reg(adapter
, HOST_INT_MASK_REG
, &host_int_mask
))
628 /* Update with the mask and write back to the register */
629 host_int_mask
&= ~HOST_INT_DISABLE
;
631 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
, host_int_mask
)) {
632 dev_err(adapter
->dev
, "disable host interrupt failed\n");
640 * This function enables the host interrupt.
642 * The host interrupt enable mask is written to the card
643 * host interrupt mask register.
645 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter
*adapter
)
647 /* Simply write the mask to the register */
648 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
, HOST_INT_ENABLE
)) {
649 dev_err(adapter
->dev
, "enable host interrupt failed\n");
656 * This function sends a data buffer to the card.
658 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter
*adapter
,
659 u32
*type
, u8
*buffer
,
660 u32 npayload
, u32 ioport
)
666 dev_err(adapter
->dev
, "%s: buffer is NULL\n", __func__
);
670 ret
= mwifiex_read_data_sync(adapter
, buffer
, npayload
, ioport
, 1);
673 dev_err(adapter
->dev
, "%s: read iomem failed: %d\n", __func__
,
678 nb
= le16_to_cpu(*(__le16
*) (buffer
));
680 dev_err(adapter
->dev
, "%s: invalid packet, nb=%d npayload=%d\n",
681 __func__
, nb
, npayload
);
685 *type
= le16_to_cpu(*(__le16
*) (buffer
+ 2));
691 * This function downloads the firmware to the card.
693 * Firmware is downloaded to the card in blocks. Every block download
694 * is tested for CRC errors, and retried a number of times before
697 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter
*adapter
,
698 struct mwifiex_fw_image
*fw
)
701 u8
*firmware
= fw
->fw_buf
;
702 u32 firmware_len
= fw
->fw_len
;
707 u32 txlen
, tx_blocks
= 0, tries
;
711 dev_err(adapter
->dev
,
712 "firmware image not found! Terminating download\n");
716 dev_dbg(adapter
->dev
, "info: downloading FW image (%d bytes)\n",
719 /* Assume that the allocated buffer is 8-byte aligned */
720 fwbuf
= kzalloc(MWIFIEX_UPLD_SIZE
, GFP_KERNEL
);
722 dev_err(adapter
->dev
,
723 "unable to alloc buffer for FW. Terminating dnld\n");
727 /* Perform firmware data transfer */
729 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
731 ret
= mwifiex_sdio_poll_card_status(adapter
, CARD_IO_READY
|
734 dev_err(adapter
->dev
, "FW download with helper:"
735 " poll status timeout @ %d\n", offset
);
740 if (offset
>= firmware_len
)
743 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
744 ret
= mwifiex_read_reg(adapter
, HOST_F1_RD_BASE_0
,
747 dev_err(adapter
->dev
,
748 "dev BASE0 register read failed: "
749 "base0=%#04X(%d). Terminating dnld\n",
753 ret
= mwifiex_read_reg(adapter
, HOST_F1_RD_BASE_1
,
756 dev_err(adapter
->dev
,
757 "dev BASE1 register read failed: "
758 "base1=%#04X(%d). Terminating dnld\n",
762 len
= (u16
) (((base1
& 0xff) << 8) | (base0
& 0xff));
767 usleep_range(10, 20);
772 } else if (len
> MWIFIEX_UPLD_SIZE
) {
773 dev_err(adapter
->dev
,
774 "FW dnld failed @ %d, invalid length %d\n",
784 if (i
> MAX_WRITE_IOMEM_RETRY
) {
785 dev_err(adapter
->dev
,
786 "FW dnld failed @ %d, over max retry\n",
791 dev_err(adapter
->dev
, "CRC indicated by the helper:"
792 " len = 0x%04X, txlen = %d\n", len
, txlen
);
794 /* Setting this to 0 to resend from same offset */
799 /* Set blocksize to transfer - checking for last
801 if (firmware_len
- offset
< txlen
)
802 txlen
= firmware_len
- offset
;
804 tx_blocks
= (txlen
+ MWIFIEX_SDIO_BLOCK_SIZE
- 1)
805 / MWIFIEX_SDIO_BLOCK_SIZE
;
807 /* Copy payload to buffer */
808 memmove(fwbuf
, &firmware
[offset
], txlen
);
811 ret
= mwifiex_write_data_sync(adapter
, fwbuf
, tx_blocks
*
812 MWIFIEX_SDIO_BLOCK_SIZE
,
815 dev_err(adapter
->dev
,
816 "FW download, write iomem (%d) failed @ %d\n",
818 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
819 dev_err(adapter
->dev
, "write CFG reg failed\n");
828 dev_dbg(adapter
->dev
, "info: FW download over, size %d bytes\n",
838 * This function checks the firmware status in card.
840 * The winner interface is also determined by this function.
842 static int mwifiex_check_fw_status(struct mwifiex_adapter
*adapter
,
850 /* Wait for firmware initialization event */
851 for (tries
= 0; tries
< poll_num
; tries
++) {
852 ret
= mwifiex_sdio_read_fw_status(adapter
, &firmware_stat
);
855 if (firmware_stat
== FIRMWARE_READY_SDIO
) {
866 (adapter
, CARD_FW_STATUS0_REG
, &winner_status
))
878 * This function reads the interrupt status from card.
880 static void mwifiex_interrupt_status(struct mwifiex_adapter
*adapter
)
882 struct sdio_mmc_card
*card
= adapter
->card
;
886 if (mwifiex_read_data_sync(adapter
, card
->mp_regs
, MAX_MP_REGS
,
887 REG_PORT
| MWIFIEX_SDIO_BYTE_MODE_MASK
,
889 dev_err(adapter
->dev
, "read mp_regs failed\n");
893 sdio_ireg
= card
->mp_regs
[HOST_INTSTATUS_REG
];
896 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
897 * Clear the interrupt status register
899 dev_dbg(adapter
->dev
, "int: sdio_ireg = %#x\n", sdio_ireg
);
900 spin_lock_irqsave(&adapter
->int_lock
, flags
);
901 adapter
->int_status
|= sdio_ireg
;
902 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
907 * SDIO interrupt handler.
909 * This function reads the interrupt status from firmware and assigns
910 * the main process in workqueue which will handle the interrupt.
913 mwifiex_sdio_interrupt(struct sdio_func
*func
)
915 struct mwifiex_adapter
*adapter
;
916 struct sdio_mmc_card
*card
;
918 card
= sdio_get_drvdata(func
);
919 if (!card
|| !card
->adapter
) {
920 pr_debug("int: func=%p card=%p adapter=%p\n",
921 func
, card
, card
? card
->adapter
: NULL
);
924 adapter
= card
->adapter
;
926 if (adapter
->surprise_removed
)
929 if (!adapter
->pps_uapsd_mode
&& adapter
->ps_state
== PS_STATE_SLEEP
)
930 adapter
->ps_state
= PS_STATE_AWAKE
;
932 mwifiex_interrupt_status(adapter
);
933 queue_work(adapter
->workqueue
, &adapter
->main_work
);
937 * This function decodes a received packet.
939 * Based on the type, the packet is treated as either a data, or
940 * a command response, or an event, and the correct handler
941 * function is invoked.
943 static int mwifiex_decode_rx_packet(struct mwifiex_adapter
*adapter
,
944 struct sk_buff
*skb
, u32 upld_typ
)
948 skb_pull(skb
, INTF_HEADER_LEN
);
951 case MWIFIEX_TYPE_DATA
:
952 dev_dbg(adapter
->dev
, "info: --- Rx: Data packet ---\n");
953 mwifiex_handle_rx_packet(adapter
, skb
);
956 case MWIFIEX_TYPE_CMD
:
957 dev_dbg(adapter
->dev
, "info: --- Rx: Cmd Response ---\n");
958 /* take care of curr_cmd = NULL case */
959 if (!adapter
->curr_cmd
) {
960 cmd_buf
= adapter
->upld_buf
;
962 if (adapter
->ps_state
== PS_STATE_SLEEP_CFM
)
963 mwifiex_process_sleep_confirm_resp(adapter
,
967 memcpy(cmd_buf
, skb
->data
,
968 min_t(u32
, MWIFIEX_SIZE_OF_CMD_BUFFER
,
971 dev_kfree_skb_any(skb
);
973 adapter
->cmd_resp_received
= true;
974 adapter
->curr_cmd
->resp_skb
= skb
;
978 case MWIFIEX_TYPE_EVENT
:
979 dev_dbg(adapter
->dev
, "info: --- Rx: Event ---\n");
980 adapter
->event_cause
= *(u32
*) skb
->data
;
982 if ((skb
->len
> 0) && (skb
->len
< MAX_EVENT_SIZE
))
983 memcpy(adapter
->event_body
,
984 skb
->data
+ MWIFIEX_EVENT_HEADER_LEN
,
987 /* event cause has been saved to adapter->event_cause */
988 adapter
->event_received
= true;
989 adapter
->event_skb
= skb
;
994 dev_err(adapter
->dev
, "unknown upload type %#x\n", upld_typ
);
995 dev_kfree_skb_any(skb
);
1003 * This function transfers received packets from card to driver, performing
1004 * aggregation if required.
1006 * For data received on control port, or if aggregation is disabled, the
1007 * received buffers are uploaded as separate packets. However, if aggregation
1008 * is enabled and required, the buffers are copied onto an aggregation buffer,
1009 * provided there is space left, processed and finally uploaded.
1011 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter
*adapter
,
1012 struct sk_buff
*skb
, u8 port
)
1014 struct sdio_mmc_card
*card
= adapter
->card
;
1015 s32 f_do_rx_aggr
= 0;
1016 s32 f_do_rx_cur
= 0;
1018 struct sk_buff
*skb_deaggr
;
1020 u32 pkt_len
, pkt_type
= 0;
1022 u32 rx_len
= skb
->len
;
1024 if (port
== CTRL_PORT
) {
1025 /* Read the command Resp without aggr */
1026 dev_dbg(adapter
->dev
, "info: %s: no aggregation for cmd "
1027 "response\n", __func__
);
1030 goto rx_curr_single
;
1033 if (!card
->mpa_rx
.enabled
) {
1034 dev_dbg(adapter
->dev
, "info: %s: rx aggregation disabled\n",
1038 goto rx_curr_single
;
1041 if (card
->mp_rd_bitmap
& (~((u16
) CTRL_PORT_MASK
))) {
1042 /* Some more data RX pending */
1043 dev_dbg(adapter
->dev
, "info: %s: not last packet\n", __func__
);
1045 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1046 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
)) {
1049 /* No room in Aggr buf, do rx aggr now */
1054 /* Rx aggr not in progress */
1059 /* No more data RX pending */
1060 dev_dbg(adapter
->dev
, "info: %s: last packet\n", __func__
);
1062 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1064 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
))
1067 /* No room in Aggr buf, do rx aggr now */
1075 dev_dbg(adapter
->dev
, "info: current packet aggregation\n");
1076 /* Curr pkt can be aggregated */
1077 MP_RX_AGGR_SETUP(card
, skb
, port
);
1079 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card
) ||
1080 MP_RX_AGGR_PORT_LIMIT_REACHED(card
)) {
1081 dev_dbg(adapter
->dev
, "info: %s: aggregated packet "
1082 "limit reached\n", __func__
);
1083 /* No more pkts allowed in Aggr buf, rx it */
1089 /* do aggr RX now */
1090 dev_dbg(adapter
->dev
, "info: do_rx_aggr: num of packets: %d\n",
1091 card
->mpa_rx
.pkt_cnt
);
1093 if (mwifiex_read_data_sync(adapter
, card
->mpa_rx
.buf
,
1094 card
->mpa_rx
.buf_len
,
1095 (adapter
->ioport
| 0x1000 |
1096 (card
->mpa_rx
.ports
<< 4)) +
1097 card
->mpa_rx
.start_port
, 1))
1100 curr_ptr
= card
->mpa_rx
.buf
;
1102 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1104 /* get curr PKT len & type */
1105 pkt_len
= *(u16
*) &curr_ptr
[0];
1106 pkt_type
= *(u16
*) &curr_ptr
[2];
1108 /* copy pkt to deaggr buf */
1109 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1111 if ((pkt_type
== MWIFIEX_TYPE_DATA
) && (pkt_len
<=
1112 card
->mpa_rx
.len_arr
[pind
])) {
1114 memcpy(skb_deaggr
->data
, curr_ptr
, pkt_len
);
1116 skb_trim(skb_deaggr
, pkt_len
);
1118 /* Process de-aggr packet */
1119 mwifiex_decode_rx_packet(adapter
, skb_deaggr
,
1122 dev_err(adapter
->dev
, "wrong aggr pkt:"
1123 " type=%d len=%d max_len=%d\n",
1125 card
->mpa_rx
.len_arr
[pind
]);
1126 dev_kfree_skb_any(skb_deaggr
);
1128 curr_ptr
+= card
->mpa_rx
.len_arr
[pind
];
1130 MP_RX_AGGR_BUF_RESET(card
);
1135 dev_dbg(adapter
->dev
, "info: RX: port: %d, rx_len: %d\n",
1138 if (mwifiex_sdio_card_to_host(adapter
, &pkt_type
,
1139 skb
->data
, skb
->len
,
1140 adapter
->ioport
+ port
))
1143 mwifiex_decode_rx_packet(adapter
, skb
, pkt_type
);
1149 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1150 /* Multiport-aggregation transfer failed - cleanup */
1151 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1152 /* copy pkt to deaggr buf */
1153 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1154 dev_kfree_skb_any(skb_deaggr
);
1156 MP_RX_AGGR_BUF_RESET(card
);
1160 /* Single transfer pending. Free curr buff also */
1161 dev_kfree_skb_any(skb
);
1167 * This function checks the current interrupt status.
1169 * The following interrupts are checked and handled by this function -
1172 * - Packets received
1174 * Since the firmware does not generate download ready interrupt if the
1175 * port updated is command port only, command sent interrupt checking
1176 * should be done manually, and for every SDIO interrupt.
1178 * In case of Rx packets received, the packets are uploaded from card to
1179 * host and processed accordingly.
1181 static int mwifiex_process_int_status(struct mwifiex_adapter
*adapter
)
1183 struct sdio_mmc_card
*card
= adapter
->card
;
1186 struct sk_buff
*skb
;
1187 u8 port
= CTRL_PORT
;
1188 u32 len_reg_l
, len_reg_u
;
1191 unsigned long flags
;
1193 spin_lock_irqsave(&adapter
->int_lock
, flags
);
1194 sdio_ireg
= adapter
->int_status
;
1195 adapter
->int_status
= 0;
1196 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
1201 if (sdio_ireg
& DN_LD_HOST_INT_STATUS
) {
1202 card
->mp_wr_bitmap
= ((u16
) card
->mp_regs
[WR_BITMAP_U
]) << 8;
1203 card
->mp_wr_bitmap
|= (u16
) card
->mp_regs
[WR_BITMAP_L
];
1204 dev_dbg(adapter
->dev
, "int: DNLD: wr_bitmap=0x%04x\n",
1205 card
->mp_wr_bitmap
);
1206 if (adapter
->data_sent
&&
1207 (card
->mp_wr_bitmap
& card
->mp_data_port_mask
)) {
1208 dev_dbg(adapter
->dev
,
1209 "info: <--- Tx DONE Interrupt --->\n");
1210 adapter
->data_sent
= false;
1214 /* As firmware will not generate download ready interrupt if the port
1215 updated is command port only, cmd_sent should be done for any SDIO
1217 if (adapter
->cmd_sent
) {
1218 /* Check if firmware has attach buffer at command port and
1219 update just that in wr_bit_map. */
1220 card
->mp_wr_bitmap
|=
1221 (u16
) card
->mp_regs
[WR_BITMAP_L
] & CTRL_PORT_MASK
;
1222 if (card
->mp_wr_bitmap
& CTRL_PORT_MASK
)
1223 adapter
->cmd_sent
= false;
1226 dev_dbg(adapter
->dev
, "info: cmd_sent=%d data_sent=%d\n",
1227 adapter
->cmd_sent
, adapter
->data_sent
);
1228 if (sdio_ireg
& UP_LD_HOST_INT_STATUS
) {
1229 card
->mp_rd_bitmap
= ((u16
) card
->mp_regs
[RD_BITMAP_U
]) << 8;
1230 card
->mp_rd_bitmap
|= (u16
) card
->mp_regs
[RD_BITMAP_L
];
1231 dev_dbg(adapter
->dev
, "int: UPLD: rd_bitmap=0x%04x\n",
1232 card
->mp_rd_bitmap
);
1235 ret
= mwifiex_get_rd_port(adapter
, &port
);
1237 dev_dbg(adapter
->dev
,
1238 "info: no more rd_port available\n");
1241 len_reg_l
= RD_LEN_P0_L
+ (port
<< 1);
1242 len_reg_u
= RD_LEN_P0_U
+ (port
<< 1);
1243 rx_len
= ((u16
) card
->mp_regs
[len_reg_u
]) << 8;
1244 rx_len
|= (u16
) card
->mp_regs
[len_reg_l
];
1245 dev_dbg(adapter
->dev
, "info: RX: port=%d rx_len=%u\n",
1248 (rx_len
+ MWIFIEX_SDIO_BLOCK_SIZE
-
1249 1) / MWIFIEX_SDIO_BLOCK_SIZE
;
1250 if (rx_len
<= INTF_HEADER_LEN
||
1251 (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
) >
1252 MWIFIEX_RX_DATA_BUF_SIZE
) {
1253 dev_err(adapter
->dev
, "invalid rx_len=%d\n",
1257 rx_len
= (u16
) (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
);
1259 skb
= dev_alloc_skb(rx_len
);
1262 dev_err(adapter
->dev
, "%s: failed to alloc skb",
1267 skb_put(skb
, rx_len
);
1269 dev_dbg(adapter
->dev
, "info: rx_len = %d skb->len = %d\n",
1272 if (mwifiex_sdio_card_to_host_mp_aggr(adapter
, skb
,
1276 dev_err(adapter
->dev
, "card_to_host_mpa failed:"
1277 " int status=%#x\n", sdio_ireg
);
1278 if (mwifiex_read_reg(adapter
,
1279 CONFIGURATION_REG
, &cr
))
1280 dev_err(adapter
->dev
,
1281 "read CFG reg failed\n");
1283 dev_dbg(adapter
->dev
,
1284 "info: CFG reg val = %d\n", cr
);
1285 if (mwifiex_write_reg(adapter
,
1288 dev_err(adapter
->dev
,
1289 "write CFG reg failed\n");
1291 dev_dbg(adapter
->dev
, "info: write success\n");
1292 if (mwifiex_read_reg(adapter
,
1293 CONFIGURATION_REG
, &cr
))
1294 dev_err(adapter
->dev
,
1295 "read CFG reg failed\n");
1297 dev_dbg(adapter
->dev
,
1298 "info: CFG reg val =%x\n", cr
);
1308 * This function aggregates transmission buffers in driver and downloads
1309 * the aggregated packet to card.
1311 * The individual packets are aggregated by copying into an aggregation
1312 * buffer and then downloaded to the card. Previous unsent packets in the
1313 * aggregation buffer are pre-copied first before new packets are added.
1314 * Aggregation is done till there is space left in the aggregation buffer,
1315 * or till new packets are available.
1317 * The function will only download the packet to the card when aggregation
1318 * stops, otherwise it will just aggregate the packet in aggregation buffer
1321 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter
*adapter
,
1322 u8
*payload
, u32 pkt_len
, u8 port
,
1325 struct sdio_mmc_card
*card
= adapter
->card
;
1327 s32 f_send_aggr_buf
= 0;
1328 s32 f_send_cur_buf
= 0;
1329 s32 f_precopy_cur_buf
= 0;
1330 s32 f_postcopy_cur_buf
= 0;
1332 if ((!card
->mpa_tx
.enabled
) || (port
== CTRL_PORT
)) {
1333 dev_dbg(adapter
->dev
, "info: %s: tx aggregation disabled\n",
1337 goto tx_curr_single
;
1341 /* More pkt in TX queue */
1342 dev_dbg(adapter
->dev
, "info: %s: more packets in queue.\n",
1345 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1346 if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card
) &&
1347 MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
)) {
1348 f_precopy_cur_buf
= 1;
1350 if (!(card
->mp_wr_bitmap
&
1351 (1 << card
->curr_wr_port
)) ||
1352 !MP_TX_AGGR_BUF_HAS_ROOM(
1353 card
, pkt_len
+ next_pkt_len
))
1354 f_send_aggr_buf
= 1;
1356 /* No room in Aggr buf, send it */
1357 f_send_aggr_buf
= 1;
1359 if (MP_TX_AGGR_PORT_LIMIT_REACHED(card
) ||
1360 !(card
->mp_wr_bitmap
&
1361 (1 << card
->curr_wr_port
)))
1364 f_postcopy_cur_buf
= 1;
1367 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
) &&
1368 (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1369 f_precopy_cur_buf
= 1;
1374 /* Last pkt in TX queue */
1375 dev_dbg(adapter
->dev
, "info: %s: Last packet in Tx Queue.\n",
1378 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1379 /* some packs in Aggr buf already */
1380 f_send_aggr_buf
= 1;
1382 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
))
1383 f_precopy_cur_buf
= 1;
1385 /* No room in Aggr buf, send it */
1392 if (f_precopy_cur_buf
) {
1393 dev_dbg(adapter
->dev
, "data: %s: precopy current buffer\n",
1395 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1397 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card
) ||
1398 MP_TX_AGGR_PORT_LIMIT_REACHED(card
))
1399 /* No more pkts allowed in Aggr buf, send it */
1400 f_send_aggr_buf
= 1;
1403 if (f_send_aggr_buf
) {
1404 dev_dbg(adapter
->dev
, "data: %s: send aggr buffer: %d %d\n",
1406 card
->mpa_tx
.start_port
, card
->mpa_tx
.ports
);
1407 ret
= mwifiex_write_data_to_card(adapter
, card
->mpa_tx
.buf
,
1408 card
->mpa_tx
.buf_len
,
1409 (adapter
->ioport
| 0x1000 |
1410 (card
->mpa_tx
.ports
<< 4)) +
1411 card
->mpa_tx
.start_port
);
1413 MP_TX_AGGR_BUF_RESET(card
);
1417 if (f_send_cur_buf
) {
1418 dev_dbg(adapter
->dev
, "data: %s: send current buffer %d\n",
1420 ret
= mwifiex_write_data_to_card(adapter
, payload
, pkt_len
,
1421 adapter
->ioport
+ port
);
1424 if (f_postcopy_cur_buf
) {
1425 dev_dbg(adapter
->dev
, "data: %s: postcopy current buffer\n",
1427 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1434 * This function downloads data from driver to card.
1436 * Both commands and data packets are transferred to the card by this
1439 * This function adds the SDIO specific header to the front of the buffer
1440 * before transferring. The header contains the length of the packet and
1441 * the type. The firmware handles the packets based upon this set type.
1443 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter
*adapter
,
1444 u8 type
, struct sk_buff
*skb
,
1445 struct mwifiex_tx_param
*tx_param
)
1447 struct sdio_mmc_card
*card
= adapter
->card
;
1451 u8 port
= CTRL_PORT
;
1452 u8
*payload
= (u8
*)skb
->data
;
1453 u32 pkt_len
= skb
->len
;
1455 /* Allocate buffer and copy payload */
1456 blk_size
= MWIFIEX_SDIO_BLOCK_SIZE
;
1457 buf_block_len
= (pkt_len
+ blk_size
- 1) / blk_size
;
1458 *(u16
*) &payload
[0] = (u16
) pkt_len
;
1459 *(u16
*) &payload
[2] = type
;
1462 * This is SDIO specific header
1464 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1465 * MWIFIEX_TYPE_EVENT = 3)
1467 if (type
== MWIFIEX_TYPE_DATA
) {
1468 ret
= mwifiex_get_wr_port_data(adapter
, &port
);
1470 dev_err(adapter
->dev
, "%s: no wr_port available\n",
1475 adapter
->cmd_sent
= true;
1476 /* Type must be MWIFIEX_TYPE_CMD */
1478 if (pkt_len
<= INTF_HEADER_LEN
||
1479 pkt_len
> MWIFIEX_UPLD_SIZE
)
1480 dev_err(adapter
->dev
, "%s: payload=%p, nb=%d\n",
1481 __func__
, payload
, pkt_len
);
1484 /* Transfer data to card */
1485 pkt_len
= buf_block_len
* blk_size
;
1488 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1489 port
, tx_param
->next_pkt_len
1492 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1496 if (type
== MWIFIEX_TYPE_CMD
)
1497 adapter
->cmd_sent
= false;
1498 if (type
== MWIFIEX_TYPE_DATA
)
1499 adapter
->data_sent
= false;
1501 if (type
== MWIFIEX_TYPE_DATA
) {
1502 if (!(card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1503 adapter
->data_sent
= true;
1505 adapter
->data_sent
= false;
1513 * This function allocates the MPA Tx and Rx buffers.
1515 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter
*adapter
,
1516 u32 mpa_tx_buf_size
, u32 mpa_rx_buf_size
)
1518 struct sdio_mmc_card
*card
= adapter
->card
;
1521 card
->mpa_tx
.buf
= kzalloc(mpa_tx_buf_size
, GFP_KERNEL
);
1522 if (!card
->mpa_tx
.buf
) {
1523 dev_err(adapter
->dev
, "could not alloc buffer for MP-A TX\n");
1528 card
->mpa_tx
.buf_size
= mpa_tx_buf_size
;
1530 card
->mpa_rx
.buf
= kzalloc(mpa_rx_buf_size
, GFP_KERNEL
);
1531 if (!card
->mpa_rx
.buf
) {
1532 dev_err(adapter
->dev
, "could not alloc buffer for MP-A RX\n");
1537 card
->mpa_rx
.buf_size
= mpa_rx_buf_size
;
1541 kfree(card
->mpa_tx
.buf
);
1542 kfree(card
->mpa_rx
.buf
);
1549 * This function unregisters the SDIO device.
1551 * The SDIO IRQ is released, the function is disabled and driver
1552 * data is set to null.
1555 mwifiex_unregister_dev(struct mwifiex_adapter
*adapter
)
1557 struct sdio_mmc_card
*card
= adapter
->card
;
1559 if (adapter
->card
) {
1560 /* Release the SDIO IRQ */
1561 sdio_claim_host(card
->func
);
1562 sdio_release_irq(card
->func
);
1563 sdio_disable_func(card
->func
);
1564 sdio_release_host(card
->func
);
1565 sdio_set_drvdata(card
->func
, NULL
);
1570 * This function registers the SDIO device.
1572 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1574 static int mwifiex_register_dev(struct mwifiex_adapter
*adapter
)
1577 struct sdio_mmc_card
*card
= adapter
->card
;
1578 struct sdio_func
*func
= card
->func
;
1580 /* save adapter pointer in card */
1581 card
->adapter
= adapter
;
1583 sdio_claim_host(func
);
1585 /* Request the SDIO IRQ */
1586 ret
= sdio_claim_irq(func
, mwifiex_sdio_interrupt
);
1588 pr_err("claim irq failed: ret=%d\n", ret
);
1592 /* Set block size */
1593 ret
= sdio_set_block_size(card
->func
, MWIFIEX_SDIO_BLOCK_SIZE
);
1595 pr_err("cannot set SDIO block size\n");
1600 sdio_release_host(func
);
1601 sdio_set_drvdata(func
, card
);
1603 adapter
->dev
= &func
->dev
;
1605 switch (func
->device
) {
1606 case SDIO_DEVICE_ID_MARVELL_8786
:
1607 strcpy(adapter
->fw_name
, SD8786_DEFAULT_FW_NAME
);
1609 case SDIO_DEVICE_ID_MARVELL_8797
:
1610 strcpy(adapter
->fw_name
, SD8797_DEFAULT_FW_NAME
);
1612 case SDIO_DEVICE_ID_MARVELL_8787
:
1614 strcpy(adapter
->fw_name
, SD8787_DEFAULT_FW_NAME
);
1621 sdio_release_irq(func
);
1623 sdio_disable_func(func
);
1624 sdio_release_host(func
);
1625 adapter
->card
= NULL
;
1631 * This function initializes the SDIO driver.
1633 * The following initializations steps are followed -
1634 * - Read the Host interrupt status register to acknowledge
1635 * the first interrupt got from bootloader
1636 * - Disable host interrupt mask register
1638 * - Initialize SDIO variables in card
1639 * - Allocate MP registers
1640 * - Allocate MPA Tx and Rx buffers
1642 static int mwifiex_init_sdio(struct mwifiex_adapter
*adapter
)
1644 struct sdio_mmc_card
*card
= adapter
->card
;
1649 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1650 * from the bootloader. If we don't do this we get a interrupt
1651 * as soon as we register the irq.
1653 mwifiex_read_reg(adapter
, HOST_INTSTATUS_REG
, &sdio_ireg
);
1655 /* Disable host interrupt mask register for SDIO */
1656 mwifiex_sdio_disable_host_int(adapter
);
1658 /* Get SDIO ioport */
1659 mwifiex_init_sdio_ioport(adapter
);
1661 /* Initialize SDIO variables in card */
1662 card
->mp_rd_bitmap
= 0;
1663 card
->mp_wr_bitmap
= 0;
1664 card
->curr_rd_port
= 1;
1665 card
->curr_wr_port
= 1;
1667 card
->mp_data_port_mask
= DATA_PORT_MASK
;
1669 card
->mpa_tx
.buf_len
= 0;
1670 card
->mpa_tx
.pkt_cnt
= 0;
1671 card
->mpa_tx
.start_port
= 0;
1673 card
->mpa_tx
.enabled
= 1;
1674 card
->mpa_tx
.pkt_aggr_limit
= SDIO_MP_AGGR_DEF_PKT_LIMIT
;
1676 card
->mpa_rx
.buf_len
= 0;
1677 card
->mpa_rx
.pkt_cnt
= 0;
1678 card
->mpa_rx
.start_port
= 0;
1680 card
->mpa_rx
.enabled
= 1;
1681 card
->mpa_rx
.pkt_aggr_limit
= SDIO_MP_AGGR_DEF_PKT_LIMIT
;
1683 /* Allocate buffers for SDIO MP-A */
1684 card
->mp_regs
= kzalloc(MAX_MP_REGS
, GFP_KERNEL
);
1685 if (!card
->mp_regs
) {
1686 dev_err(adapter
->dev
, "failed to alloc mp_regs\n");
1690 ret
= mwifiex_alloc_sdio_mpa_buffers(adapter
,
1691 SDIO_MP_TX_AGGR_DEF_BUF_SIZE
,
1692 SDIO_MP_RX_AGGR_DEF_BUF_SIZE
);
1694 dev_err(adapter
->dev
, "failed to alloc sdio mp-a buffers\n");
1695 kfree(card
->mp_regs
);
1703 * This function resets the MPA Tx and Rx buffers.
1705 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter
*adapter
)
1707 struct sdio_mmc_card
*card
= adapter
->card
;
1709 MP_TX_AGGR_BUF_RESET(card
);
1710 MP_RX_AGGR_BUF_RESET(card
);
1714 * This function cleans up the allocated card buffers.
1716 * The following are freed by this function -
1721 static void mwifiex_cleanup_sdio(struct mwifiex_adapter
*adapter
)
1723 struct sdio_mmc_card
*card
= adapter
->card
;
1725 kfree(card
->mp_regs
);
1726 kfree(card
->mpa_tx
.buf
);
1727 kfree(card
->mpa_rx
.buf
);
1731 * This function updates the MP end port in card.
1734 mwifiex_update_mp_end_port(struct mwifiex_adapter
*adapter
, u16 port
)
1736 struct sdio_mmc_card
*card
= adapter
->card
;
1739 card
->mp_end_port
= port
;
1741 card
->mp_data_port_mask
= DATA_PORT_MASK
;
1743 for (i
= 1; i
<= MAX_PORT
- card
->mp_end_port
; i
++)
1744 card
->mp_data_port_mask
&= ~(1 << (MAX_PORT
- i
));
1746 card
->curr_wr_port
= 1;
1748 dev_dbg(adapter
->dev
, "cmd: mp_end_port %d, data port mask 0x%x\n",
1749 port
, card
->mp_data_port_mask
);
1752 static struct mwifiex_if_ops sdio_ops
= {
1753 .init_if
= mwifiex_init_sdio
,
1754 .cleanup_if
= mwifiex_cleanup_sdio
,
1755 .check_fw_status
= mwifiex_check_fw_status
,
1756 .prog_fw
= mwifiex_prog_fw_w_helper
,
1757 .register_dev
= mwifiex_register_dev
,
1758 .unregister_dev
= mwifiex_unregister_dev
,
1759 .enable_int
= mwifiex_sdio_enable_host_int
,
1760 .process_int_status
= mwifiex_process_int_status
,
1761 .host_to_card
= mwifiex_sdio_host_to_card
,
1762 .wakeup
= mwifiex_pm_wakeup_card
,
1763 .wakeup_complete
= mwifiex_pm_wakeup_card_complete
,
1766 .update_mp_end_port
= mwifiex_update_mp_end_port
,
1767 .cleanup_mpa_buf
= mwifiex_cleanup_mpa_buf
,
1768 .cmdrsp_complete
= mwifiex_sdio_cmdrsp_complete
,
1769 .event_complete
= mwifiex_sdio_event_complete
,
1773 * This function initializes the SDIO driver.
1775 * This initiates the semaphore and registers the device with
1779 mwifiex_sdio_init_module(void)
1781 sema_init(&add_remove_card_sem
, 1);
1783 /* Clear the flag in case user removes the card. */
1786 return sdio_register_driver(&mwifiex_sdio
);
1790 * This function cleans up the SDIO driver.
1792 * The following major steps are followed for cleanup -
1793 * - Resume the device if its suspended
1794 * - Disconnect the device if connected
1795 * - Shutdown the firmware
1796 * - Unregister the device from SDIO bus.
1799 mwifiex_sdio_cleanup_module(void)
1801 if (!down_interruptible(&add_remove_card_sem
))
1802 up(&add_remove_card_sem
);
1804 /* Set the flag as user is removing this module. */
1807 sdio_unregister_driver(&mwifiex_sdio
);
1810 module_init(mwifiex_sdio_init_module
);
1811 module_exit(mwifiex_sdio_cleanup_module
);
1813 MODULE_AUTHOR("Marvell International Ltd.");
1814 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION
);
1815 MODULE_VERSION(SDIO_VERSION
);
1816 MODULE_LICENSE("GPL v2");
1817 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME
);
1818 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME
);
1819 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME
);