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;
169 pm_flag
= sdio_get_host_pm_caps(func
);
170 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
171 sdio_func_id(func
), pm_flag
);
172 if (!(pm_flag
& MMC_PM_KEEP_POWER
)) {
173 pr_err("%s: cannot remain alive while host is"
174 " suspended\n", sdio_func_id(func
));
178 card
= sdio_get_drvdata(func
);
179 if (!card
|| !card
->adapter
) {
180 pr_err("suspend: invalid card or adapter\n");
184 pr_err("suspend: sdio_func is not specified\n");
188 adapter
= card
->adapter
;
190 /* Enable the Host Sleep */
191 hs_actived
= mwifiex_enable_hs(adapter
);
193 pr_debug("cmd: suspend with MMC_PM_KEEP_POWER\n");
194 ret
= sdio_set_host_pm_flags(func
, MMC_PM_KEEP_POWER
);
197 /* Indicate device suspended */
198 adapter
->is_suspended
= true;
200 for (i
= 0; i
< adapter
->priv_num
; i
++)
201 netif_carrier_off(adapter
->priv
[i
]->netdev
);
209 * Kernel needs to suspend all functions separately. Therefore all
210 * registered functions must have drivers with suspend and resume
211 * methods. Failing that the kernel simply removes the whole card.
213 * If already not resumed, this function turns on the traffic and
214 * sends a host sleep cancel request to the firmware.
216 static int mwifiex_sdio_resume(struct device
*dev
)
218 struct sdio_func
*func
= dev_to_sdio_func(dev
);
219 struct sdio_mmc_card
*card
;
220 struct mwifiex_adapter
*adapter
;
221 mmc_pm_flag_t pm_flag
= 0;
225 pm_flag
= sdio_get_host_pm_caps(func
);
226 card
= sdio_get_drvdata(func
);
227 if (!card
|| !card
->adapter
) {
228 pr_err("resume: invalid card or adapter\n");
232 pr_err("resume: sdio_func is not specified\n");
236 adapter
= card
->adapter
;
238 if (!adapter
->is_suspended
) {
239 dev_warn(adapter
->dev
, "device already resumed\n");
243 adapter
->is_suspended
= false;
245 for (i
= 0; i
< adapter
->priv_num
; i
++)
246 if (adapter
->priv
[i
]->media_connected
)
247 netif_carrier_on(adapter
->priv
[i
]->netdev
);
249 /* Disable Host Sleep */
250 mwifiex_cancel_hs(mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
256 /* Device ID for SD8786 */
257 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
258 /* Device ID for SD8787 */
259 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
260 /* Device ID for SD8797 */
261 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
264 static const struct sdio_device_id mwifiex_ids
[] = {
265 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8786
)},
266 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8787
)},
267 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8797
)},
271 MODULE_DEVICE_TABLE(sdio
, mwifiex_ids
);
273 static const struct dev_pm_ops mwifiex_sdio_pm_ops
= {
274 .suspend
= mwifiex_sdio_suspend
,
275 .resume
= mwifiex_sdio_resume
,
278 static struct sdio_driver mwifiex_sdio
= {
279 .name
= "mwifiex_sdio",
280 .id_table
= mwifiex_ids
,
281 .probe
= mwifiex_sdio_probe
,
282 .remove
= mwifiex_sdio_remove
,
284 .owner
= THIS_MODULE
,
285 .pm
= &mwifiex_sdio_pm_ops
,
290 * This function writes data into SDIO card register.
293 mwifiex_write_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u32 data
)
295 struct sdio_mmc_card
*card
= adapter
->card
;
298 sdio_claim_host(card
->func
);
299 sdio_writeb(card
->func
, (u8
) data
, reg
, &ret
);
300 sdio_release_host(card
->func
);
306 * This function reads data from SDIO card register.
309 mwifiex_read_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u32
*data
)
311 struct sdio_mmc_card
*card
= adapter
->card
;
315 sdio_claim_host(card
->func
);
316 val
= sdio_readb(card
->func
, reg
, &ret
);
317 sdio_release_host(card
->func
);
325 * This function writes multiple data into SDIO card memory.
327 * This does not work in suspended mode.
330 mwifiex_write_data_sync(struct mwifiex_adapter
*adapter
,
331 u8
*buffer
, u32 pkt_len
, u32 port
)
333 struct sdio_mmc_card
*card
= adapter
->card
;
336 (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
: BLOCK_MODE
;
337 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
340 BLOCK_MODE
) ? (pkt_len
/
341 MWIFIEX_SDIO_BLOCK_SIZE
) : pkt_len
;
342 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
344 if (adapter
->is_suspended
) {
345 dev_err(adapter
->dev
,
346 "%s: not allowed while suspended\n", __func__
);
350 sdio_claim_host(card
->func
);
352 if (!sdio_writesb(card
->func
, ioport
, buffer
, blk_cnt
* blk_size
))
355 sdio_release_host(card
->func
);
361 * This function reads multiple data from SDIO card memory.
363 static int mwifiex_read_data_sync(struct mwifiex_adapter
*adapter
, u8
*buffer
,
364 u32 len
, u32 port
, u8 claim
)
366 struct sdio_mmc_card
*card
= adapter
->card
;
368 u8 blk_mode
= (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
370 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
371 u32 blk_cnt
= (blk_mode
== BLOCK_MODE
) ? (len
/ MWIFIEX_SDIO_BLOCK_SIZE
)
373 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
376 sdio_claim_host(card
->func
);
378 if (!sdio_readsb(card
->func
, buffer
, ioport
, blk_cnt
* blk_size
))
382 sdio_release_host(card
->func
);
388 * This function wakes up the card.
390 * A host power up command is written to the card configuration
391 * register to wake up the card.
393 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter
*adapter
)
395 dev_dbg(adapter
->dev
, "event: wakeup device...\n");
397 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, HOST_POWER_UP
);
401 * This function is called after the card has woken up.
403 * The card configuration register is reset.
405 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter
*adapter
)
407 dev_dbg(adapter
->dev
, "cmd: wakeup device completed\n");
409 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0);
413 * This function initializes the IO ports.
415 * The following operations are performed -
416 * - Read the IO ports (0, 1 and 2)
417 * - Set host interrupt Reset-To-Read to clear
418 * - Set auto re-enable interrupt
420 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter
*adapter
)
426 /* Read the IO port */
427 if (!mwifiex_read_reg(adapter
, IO_PORT_0_REG
, ®
))
428 adapter
->ioport
|= (reg
& 0xff);
432 if (!mwifiex_read_reg(adapter
, IO_PORT_1_REG
, ®
))
433 adapter
->ioport
|= ((reg
& 0xff) << 8);
437 if (!mwifiex_read_reg(adapter
, IO_PORT_2_REG
, ®
))
438 adapter
->ioport
|= ((reg
& 0xff) << 16);
442 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter
->ioport
);
444 /* Set Host interrupt reset to read to clear */
445 if (!mwifiex_read_reg(adapter
, HOST_INT_RSR_REG
, ®
))
446 mwifiex_write_reg(adapter
, HOST_INT_RSR_REG
,
447 reg
| SDIO_INT_MASK
);
451 /* Dnld/Upld ready set to auto reset */
452 if (!mwifiex_read_reg(adapter
, CARD_MISC_CFG_REG
, ®
))
453 mwifiex_write_reg(adapter
, CARD_MISC_CFG_REG
,
454 reg
| AUTO_RE_ENABLE_INT
);
462 * This function sends data to the card.
464 static int mwifiex_write_data_to_card(struct mwifiex_adapter
*adapter
,
465 u8
*payload
, u32 pkt_len
, u32 port
)
471 ret
= mwifiex_write_data_sync(adapter
, payload
, pkt_len
, port
);
474 dev_err(adapter
->dev
, "host_to_card, write iomem"
475 " (%d) failed: %d\n", i
, ret
);
476 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
477 dev_err(adapter
->dev
, "write CFG reg failed\n");
480 if (i
> MAX_WRITE_IOMEM_RETRY
)
489 * This function gets the read port.
491 * If control port bit is set in MP read bitmap, the control port
492 * is returned, otherwise the current read port is returned and
493 * the value is increased (provided it does not reach the maximum
494 * limit, in which case it is reset to 1)
496 static int mwifiex_get_rd_port(struct mwifiex_adapter
*adapter
, u8
*port
)
498 struct sdio_mmc_card
*card
= adapter
->card
;
499 u16 rd_bitmap
= card
->mp_rd_bitmap
;
501 dev_dbg(adapter
->dev
, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap
);
503 if (!(rd_bitmap
& (CTRL_PORT_MASK
| DATA_PORT_MASK
)))
506 if (card
->mp_rd_bitmap
& CTRL_PORT_MASK
) {
507 card
->mp_rd_bitmap
&= (u16
) (~CTRL_PORT_MASK
);
509 dev_dbg(adapter
->dev
, "data: port=%d mp_rd_bitmap=0x%04x\n",
510 *port
, card
->mp_rd_bitmap
);
512 if (card
->mp_rd_bitmap
& (1 << card
->curr_rd_port
)) {
513 card
->mp_rd_bitmap
&= (u16
)
514 (~(1 << card
->curr_rd_port
));
515 *port
= card
->curr_rd_port
;
517 if (++card
->curr_rd_port
== MAX_PORT
)
518 card
->curr_rd_port
= 1;
523 dev_dbg(adapter
->dev
,
524 "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n",
525 *port
, rd_bitmap
, card
->mp_rd_bitmap
);
531 * This function gets the write port for data.
533 * The current write port is returned if available and the value is
534 * increased (provided it does not reach the maximum limit, in which
535 * case it is reset to 1)
537 static int mwifiex_get_wr_port_data(struct mwifiex_adapter
*adapter
, u8
*port
)
539 struct sdio_mmc_card
*card
= adapter
->card
;
540 u16 wr_bitmap
= card
->mp_wr_bitmap
;
542 dev_dbg(adapter
->dev
, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap
);
544 if (!(wr_bitmap
& card
->mp_data_port_mask
))
547 if (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)) {
548 card
->mp_wr_bitmap
&= (u16
) (~(1 << card
->curr_wr_port
));
549 *port
= card
->curr_wr_port
;
550 if (++card
->curr_wr_port
== card
->mp_end_port
)
551 card
->curr_wr_port
= 1;
553 adapter
->data_sent
= true;
557 if (*port
== CTRL_PORT
) {
558 dev_err(adapter
->dev
, "invalid data port=%d cur port=%d"
559 " mp_wr_bitmap=0x%04x -> 0x%04x\n",
560 *port
, card
->curr_wr_port
, wr_bitmap
,
565 dev_dbg(adapter
->dev
, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n",
566 *port
, wr_bitmap
, card
->mp_wr_bitmap
);
572 * This function polls the card status.
575 mwifiex_sdio_poll_card_status(struct mwifiex_adapter
*adapter
, u8 bits
)
580 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
581 if (mwifiex_read_reg(adapter
, CARD_STATUS_REG
, &cs
))
583 else if ((cs
& bits
) == bits
)
586 usleep_range(10, 20);
589 dev_err(adapter
->dev
, "poll card status failed, tries = %d\n", tries
);
595 * This function reads the firmware status.
598 mwifiex_sdio_read_fw_status(struct mwifiex_adapter
*adapter
, u16
*dat
)
602 if (mwifiex_read_reg(adapter
, CARD_FW_STATUS0_REG
, &fws0
))
605 if (mwifiex_read_reg(adapter
, CARD_FW_STATUS1_REG
, &fws1
))
608 *dat
= (u16
) ((fws1
<< 8) | fws0
);
614 * This function disables the host interrupt.
616 * The host interrupt mask is read, the disable bit is reset and
617 * written back to the card host interrupt mask register.
619 static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter
*adapter
)
623 /* Read back the host_int_mask register */
624 if (mwifiex_read_reg(adapter
, HOST_INT_MASK_REG
, &host_int_mask
))
627 /* Update with the mask and write back to the register */
628 host_int_mask
&= ~HOST_INT_DISABLE
;
630 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
, host_int_mask
)) {
631 dev_err(adapter
->dev
, "disable host interrupt failed\n");
639 * This function enables the host interrupt.
641 * The host interrupt enable mask is written to the card
642 * host interrupt mask register.
644 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter
*adapter
)
646 /* Simply write the mask to the register */
647 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
, HOST_INT_ENABLE
)) {
648 dev_err(adapter
->dev
, "enable host interrupt failed\n");
655 * This function sends a data buffer to the card.
657 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter
*adapter
,
658 u32
*type
, u8
*buffer
,
659 u32 npayload
, u32 ioport
)
665 dev_err(adapter
->dev
, "%s: buffer is NULL\n", __func__
);
669 ret
= mwifiex_read_data_sync(adapter
, buffer
, npayload
, ioport
, 1);
672 dev_err(adapter
->dev
, "%s: read iomem failed: %d\n", __func__
,
677 nb
= le16_to_cpu(*(__le16
*) (buffer
));
679 dev_err(adapter
->dev
, "%s: invalid packet, nb=%d npayload=%d\n",
680 __func__
, nb
, npayload
);
684 *type
= le16_to_cpu(*(__le16
*) (buffer
+ 2));
690 * This function downloads the firmware to the card.
692 * Firmware is downloaded to the card in blocks. Every block download
693 * is tested for CRC errors, and retried a number of times before
696 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter
*adapter
,
697 struct mwifiex_fw_image
*fw
)
700 u8
*firmware
= fw
->fw_buf
;
701 u32 firmware_len
= fw
->fw_len
;
706 u32 txlen
, tx_blocks
= 0, tries
;
710 dev_err(adapter
->dev
,
711 "firmware image not found! Terminating download\n");
715 dev_dbg(adapter
->dev
, "info: downloading FW image (%d bytes)\n",
718 /* Assume that the allocated buffer is 8-byte aligned */
719 fwbuf
= kzalloc(MWIFIEX_UPLD_SIZE
, GFP_KERNEL
);
721 dev_err(adapter
->dev
,
722 "unable to alloc buffer for FW. Terminating dnld\n");
726 /* Perform firmware data transfer */
728 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
730 ret
= mwifiex_sdio_poll_card_status(adapter
, CARD_IO_READY
|
733 dev_err(adapter
->dev
, "FW download with helper:"
734 " poll status timeout @ %d\n", offset
);
739 if (offset
>= firmware_len
)
742 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
743 ret
= mwifiex_read_reg(adapter
, HOST_F1_RD_BASE_0
,
746 dev_err(adapter
->dev
,
747 "dev BASE0 register read failed: "
748 "base0=%#04X(%d). Terminating dnld\n",
752 ret
= mwifiex_read_reg(adapter
, HOST_F1_RD_BASE_1
,
755 dev_err(adapter
->dev
,
756 "dev BASE1 register read failed: "
757 "base1=%#04X(%d). Terminating dnld\n",
761 len
= (u16
) (((base1
& 0xff) << 8) | (base0
& 0xff));
766 usleep_range(10, 20);
771 } else if (len
> MWIFIEX_UPLD_SIZE
) {
772 dev_err(adapter
->dev
,
773 "FW dnld failed @ %d, invalid length %d\n",
783 if (i
> MAX_WRITE_IOMEM_RETRY
) {
784 dev_err(adapter
->dev
,
785 "FW dnld failed @ %d, over max retry\n",
790 dev_err(adapter
->dev
, "CRC indicated by the helper:"
791 " len = 0x%04X, txlen = %d\n", len
, txlen
);
793 /* Setting this to 0 to resend from same offset */
798 /* Set blocksize to transfer - checking for last
800 if (firmware_len
- offset
< txlen
)
801 txlen
= firmware_len
- offset
;
803 tx_blocks
= (txlen
+ MWIFIEX_SDIO_BLOCK_SIZE
- 1)
804 / MWIFIEX_SDIO_BLOCK_SIZE
;
806 /* Copy payload to buffer */
807 memmove(fwbuf
, &firmware
[offset
], txlen
);
810 ret
= mwifiex_write_data_sync(adapter
, fwbuf
, tx_blocks
*
811 MWIFIEX_SDIO_BLOCK_SIZE
,
814 dev_err(adapter
->dev
,
815 "FW download, write iomem (%d) failed @ %d\n",
817 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
818 dev_err(adapter
->dev
, "write CFG reg failed\n");
827 dev_dbg(adapter
->dev
, "info: FW download over, size %d bytes\n",
837 * This function checks the firmware status in card.
839 * The winner interface is also determined by this function.
841 static int mwifiex_check_fw_status(struct mwifiex_adapter
*adapter
,
849 /* Wait for firmware initialization event */
850 for (tries
= 0; tries
< poll_num
; tries
++) {
851 ret
= mwifiex_sdio_read_fw_status(adapter
, &firmware_stat
);
854 if (firmware_stat
== FIRMWARE_READY_SDIO
) {
865 (adapter
, CARD_FW_STATUS0_REG
, &winner_status
))
877 * This function reads the interrupt status from card.
879 static void mwifiex_interrupt_status(struct mwifiex_adapter
*adapter
)
881 struct sdio_mmc_card
*card
= adapter
->card
;
885 if (mwifiex_read_data_sync(adapter
, card
->mp_regs
, MAX_MP_REGS
,
886 REG_PORT
| MWIFIEX_SDIO_BYTE_MODE_MASK
,
888 dev_err(adapter
->dev
, "read mp_regs failed\n");
892 sdio_ireg
= card
->mp_regs
[HOST_INTSTATUS_REG
];
895 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
896 * Clear the interrupt status register
898 dev_dbg(adapter
->dev
, "int: sdio_ireg = %#x\n", sdio_ireg
);
899 spin_lock_irqsave(&adapter
->int_lock
, flags
);
900 adapter
->int_status
|= sdio_ireg
;
901 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
906 * SDIO interrupt handler.
908 * This function reads the interrupt status from firmware and assigns
909 * the main process in workqueue which will handle the interrupt.
912 mwifiex_sdio_interrupt(struct sdio_func
*func
)
914 struct mwifiex_adapter
*adapter
;
915 struct sdio_mmc_card
*card
;
917 card
= sdio_get_drvdata(func
);
918 if (!card
|| !card
->adapter
) {
919 pr_debug("int: func=%p card=%p adapter=%p\n",
920 func
, card
, card
? card
->adapter
: NULL
);
923 adapter
= card
->adapter
;
925 if (adapter
->surprise_removed
)
928 if (!adapter
->pps_uapsd_mode
&& adapter
->ps_state
== PS_STATE_SLEEP
)
929 adapter
->ps_state
= PS_STATE_AWAKE
;
931 mwifiex_interrupt_status(adapter
);
932 queue_work(adapter
->workqueue
, &adapter
->main_work
);
936 * This function decodes a received packet.
938 * Based on the type, the packet is treated as either a data, or
939 * a command response, or an event, and the correct handler
940 * function is invoked.
942 static int mwifiex_decode_rx_packet(struct mwifiex_adapter
*adapter
,
943 struct sk_buff
*skb
, u32 upld_typ
)
947 skb_pull(skb
, INTF_HEADER_LEN
);
950 case MWIFIEX_TYPE_DATA
:
951 dev_dbg(adapter
->dev
, "info: --- Rx: Data packet ---\n");
952 mwifiex_handle_rx_packet(adapter
, skb
);
955 case MWIFIEX_TYPE_CMD
:
956 dev_dbg(adapter
->dev
, "info: --- Rx: Cmd Response ---\n");
957 /* take care of curr_cmd = NULL case */
958 if (!adapter
->curr_cmd
) {
959 cmd_buf
= adapter
->upld_buf
;
961 if (adapter
->ps_state
== PS_STATE_SLEEP_CFM
)
962 mwifiex_process_sleep_confirm_resp(adapter
,
966 memcpy(cmd_buf
, skb
->data
,
967 min_t(u32
, MWIFIEX_SIZE_OF_CMD_BUFFER
,
970 dev_kfree_skb_any(skb
);
972 adapter
->cmd_resp_received
= true;
973 adapter
->curr_cmd
->resp_skb
= skb
;
977 case MWIFIEX_TYPE_EVENT
:
978 dev_dbg(adapter
->dev
, "info: --- Rx: Event ---\n");
979 adapter
->event_cause
= *(u32
*) skb
->data
;
981 if ((skb
->len
> 0) && (skb
->len
< MAX_EVENT_SIZE
))
982 memcpy(adapter
->event_body
,
983 skb
->data
+ MWIFIEX_EVENT_HEADER_LEN
,
986 /* event cause has been saved to adapter->event_cause */
987 adapter
->event_received
= true;
988 adapter
->event_skb
= skb
;
993 dev_err(adapter
->dev
, "unknown upload type %#x\n", upld_typ
);
994 dev_kfree_skb_any(skb
);
1002 * This function transfers received packets from card to driver, performing
1003 * aggregation if required.
1005 * For data received on control port, or if aggregation is disabled, the
1006 * received buffers are uploaded as separate packets. However, if aggregation
1007 * is enabled and required, the buffers are copied onto an aggregation buffer,
1008 * provided there is space left, processed and finally uploaded.
1010 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter
*adapter
,
1011 struct sk_buff
*skb
, u8 port
)
1013 struct sdio_mmc_card
*card
= adapter
->card
;
1014 s32 f_do_rx_aggr
= 0;
1015 s32 f_do_rx_cur
= 0;
1017 struct sk_buff
*skb_deaggr
;
1019 u32 pkt_len
, pkt_type
= 0;
1021 u32 rx_len
= skb
->len
;
1023 if (port
== CTRL_PORT
) {
1024 /* Read the command Resp without aggr */
1025 dev_dbg(adapter
->dev
, "info: %s: no aggregation for cmd "
1026 "response\n", __func__
);
1029 goto rx_curr_single
;
1032 if (!card
->mpa_rx
.enabled
) {
1033 dev_dbg(adapter
->dev
, "info: %s: rx aggregation disabled\n",
1037 goto rx_curr_single
;
1040 if (card
->mp_rd_bitmap
& (~((u16
) CTRL_PORT_MASK
))) {
1041 /* Some more data RX pending */
1042 dev_dbg(adapter
->dev
, "info: %s: not last packet\n", __func__
);
1044 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1045 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
)) {
1048 /* No room in Aggr buf, do rx aggr now */
1053 /* Rx aggr not in progress */
1058 /* No more data RX pending */
1059 dev_dbg(adapter
->dev
, "info: %s: last packet\n", __func__
);
1061 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1063 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
))
1066 /* No room in Aggr buf, do rx aggr now */
1074 dev_dbg(adapter
->dev
, "info: current packet aggregation\n");
1075 /* Curr pkt can be aggregated */
1076 MP_RX_AGGR_SETUP(card
, skb
, port
);
1078 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card
) ||
1079 MP_RX_AGGR_PORT_LIMIT_REACHED(card
)) {
1080 dev_dbg(adapter
->dev
, "info: %s: aggregated packet "
1081 "limit reached\n", __func__
);
1082 /* No more pkts allowed in Aggr buf, rx it */
1088 /* do aggr RX now */
1089 dev_dbg(adapter
->dev
, "info: do_rx_aggr: num of packets: %d\n",
1090 card
->mpa_rx
.pkt_cnt
);
1092 if (mwifiex_read_data_sync(adapter
, card
->mpa_rx
.buf
,
1093 card
->mpa_rx
.buf_len
,
1094 (adapter
->ioport
| 0x1000 |
1095 (card
->mpa_rx
.ports
<< 4)) +
1096 card
->mpa_rx
.start_port
, 1))
1099 curr_ptr
= card
->mpa_rx
.buf
;
1101 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1103 /* get curr PKT len & type */
1104 pkt_len
= *(u16
*) &curr_ptr
[0];
1105 pkt_type
= *(u16
*) &curr_ptr
[2];
1107 /* copy pkt to deaggr buf */
1108 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1110 if ((pkt_type
== MWIFIEX_TYPE_DATA
) && (pkt_len
<=
1111 card
->mpa_rx
.len_arr
[pind
])) {
1113 memcpy(skb_deaggr
->data
, curr_ptr
, pkt_len
);
1115 skb_trim(skb_deaggr
, pkt_len
);
1117 /* Process de-aggr packet */
1118 mwifiex_decode_rx_packet(adapter
, skb_deaggr
,
1121 dev_err(adapter
->dev
, "wrong aggr pkt:"
1122 " type=%d len=%d max_len=%d\n",
1124 card
->mpa_rx
.len_arr
[pind
]);
1125 dev_kfree_skb_any(skb_deaggr
);
1127 curr_ptr
+= card
->mpa_rx
.len_arr
[pind
];
1129 MP_RX_AGGR_BUF_RESET(card
);
1134 dev_dbg(adapter
->dev
, "info: RX: port: %d, rx_len: %d\n",
1137 if (mwifiex_sdio_card_to_host(adapter
, &pkt_type
,
1138 skb
->data
, skb
->len
,
1139 adapter
->ioport
+ port
))
1142 mwifiex_decode_rx_packet(adapter
, skb
, pkt_type
);
1148 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1149 /* Multiport-aggregation transfer failed - cleanup */
1150 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1151 /* copy pkt to deaggr buf */
1152 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1153 dev_kfree_skb_any(skb_deaggr
);
1155 MP_RX_AGGR_BUF_RESET(card
);
1159 /* Single transfer pending. Free curr buff also */
1160 dev_kfree_skb_any(skb
);
1166 * This function checks the current interrupt status.
1168 * The following interrupts are checked and handled by this function -
1171 * - Packets received
1173 * Since the firmware does not generate download ready interrupt if the
1174 * port updated is command port only, command sent interrupt checking
1175 * should be done manually, and for every SDIO interrupt.
1177 * In case of Rx packets received, the packets are uploaded from card to
1178 * host and processed accordingly.
1180 static int mwifiex_process_int_status(struct mwifiex_adapter
*adapter
)
1182 struct sdio_mmc_card
*card
= adapter
->card
;
1185 struct sk_buff
*skb
;
1186 u8 port
= CTRL_PORT
;
1187 u32 len_reg_l
, len_reg_u
;
1190 unsigned long flags
;
1192 spin_lock_irqsave(&adapter
->int_lock
, flags
);
1193 sdio_ireg
= adapter
->int_status
;
1194 adapter
->int_status
= 0;
1195 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
1200 if (sdio_ireg
& DN_LD_HOST_INT_STATUS
) {
1201 card
->mp_wr_bitmap
= ((u16
) card
->mp_regs
[WR_BITMAP_U
]) << 8;
1202 card
->mp_wr_bitmap
|= (u16
) card
->mp_regs
[WR_BITMAP_L
];
1203 dev_dbg(adapter
->dev
, "int: DNLD: wr_bitmap=0x%04x\n",
1204 card
->mp_wr_bitmap
);
1205 if (adapter
->data_sent
&&
1206 (card
->mp_wr_bitmap
& card
->mp_data_port_mask
)) {
1207 dev_dbg(adapter
->dev
,
1208 "info: <--- Tx DONE Interrupt --->\n");
1209 adapter
->data_sent
= false;
1213 /* As firmware will not generate download ready interrupt if the port
1214 updated is command port only, cmd_sent should be done for any SDIO
1216 if (adapter
->cmd_sent
) {
1217 /* Check if firmware has attach buffer at command port and
1218 update just that in wr_bit_map. */
1219 card
->mp_wr_bitmap
|=
1220 (u16
) card
->mp_regs
[WR_BITMAP_L
] & CTRL_PORT_MASK
;
1221 if (card
->mp_wr_bitmap
& CTRL_PORT_MASK
)
1222 adapter
->cmd_sent
= false;
1225 dev_dbg(adapter
->dev
, "info: cmd_sent=%d data_sent=%d\n",
1226 adapter
->cmd_sent
, adapter
->data_sent
);
1227 if (sdio_ireg
& UP_LD_HOST_INT_STATUS
) {
1228 card
->mp_rd_bitmap
= ((u16
) card
->mp_regs
[RD_BITMAP_U
]) << 8;
1229 card
->mp_rd_bitmap
|= (u16
) card
->mp_regs
[RD_BITMAP_L
];
1230 dev_dbg(adapter
->dev
, "int: UPLD: rd_bitmap=0x%04x\n",
1231 card
->mp_rd_bitmap
);
1234 ret
= mwifiex_get_rd_port(adapter
, &port
);
1236 dev_dbg(adapter
->dev
,
1237 "info: no more rd_port available\n");
1240 len_reg_l
= RD_LEN_P0_L
+ (port
<< 1);
1241 len_reg_u
= RD_LEN_P0_U
+ (port
<< 1);
1242 rx_len
= ((u16
) card
->mp_regs
[len_reg_u
]) << 8;
1243 rx_len
|= (u16
) card
->mp_regs
[len_reg_l
];
1244 dev_dbg(adapter
->dev
, "info: RX: port=%d rx_len=%u\n",
1247 (rx_len
+ MWIFIEX_SDIO_BLOCK_SIZE
-
1248 1) / MWIFIEX_SDIO_BLOCK_SIZE
;
1249 if (rx_len
<= INTF_HEADER_LEN
||
1250 (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
) >
1251 MWIFIEX_RX_DATA_BUF_SIZE
) {
1252 dev_err(adapter
->dev
, "invalid rx_len=%d\n",
1256 rx_len
= (u16
) (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
);
1258 skb
= dev_alloc_skb(rx_len
);
1261 dev_err(adapter
->dev
, "%s: failed to alloc skb",
1266 skb_put(skb
, rx_len
);
1268 dev_dbg(adapter
->dev
, "info: rx_len = %d skb->len = %d\n",
1271 if (mwifiex_sdio_card_to_host_mp_aggr(adapter
, skb
,
1275 dev_err(adapter
->dev
, "card_to_host_mpa failed:"
1276 " int status=%#x\n", sdio_ireg
);
1277 if (mwifiex_read_reg(adapter
,
1278 CONFIGURATION_REG
, &cr
))
1279 dev_err(adapter
->dev
,
1280 "read CFG reg failed\n");
1282 dev_dbg(adapter
->dev
,
1283 "info: CFG reg val = %d\n", cr
);
1284 if (mwifiex_write_reg(adapter
,
1287 dev_err(adapter
->dev
,
1288 "write CFG reg failed\n");
1290 dev_dbg(adapter
->dev
, "info: write success\n");
1291 if (mwifiex_read_reg(adapter
,
1292 CONFIGURATION_REG
, &cr
))
1293 dev_err(adapter
->dev
,
1294 "read CFG reg failed\n");
1296 dev_dbg(adapter
->dev
,
1297 "info: CFG reg val =%x\n", cr
);
1307 * This function aggregates transmission buffers in driver and downloads
1308 * the aggregated packet to card.
1310 * The individual packets are aggregated by copying into an aggregation
1311 * buffer and then downloaded to the card. Previous unsent packets in the
1312 * aggregation buffer are pre-copied first before new packets are added.
1313 * Aggregation is done till there is space left in the aggregation buffer,
1314 * or till new packets are available.
1316 * The function will only download the packet to the card when aggregation
1317 * stops, otherwise it will just aggregate the packet in aggregation buffer
1320 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter
*adapter
,
1321 u8
*payload
, u32 pkt_len
, u8 port
,
1324 struct sdio_mmc_card
*card
= adapter
->card
;
1326 s32 f_send_aggr_buf
= 0;
1327 s32 f_send_cur_buf
= 0;
1328 s32 f_precopy_cur_buf
= 0;
1329 s32 f_postcopy_cur_buf
= 0;
1331 if ((!card
->mpa_tx
.enabled
) || (port
== CTRL_PORT
)) {
1332 dev_dbg(adapter
->dev
, "info: %s: tx aggregation disabled\n",
1336 goto tx_curr_single
;
1340 /* More pkt in TX queue */
1341 dev_dbg(adapter
->dev
, "info: %s: more packets in queue.\n",
1344 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1345 if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card
) &&
1346 MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
)) {
1347 f_precopy_cur_buf
= 1;
1349 if (!(card
->mp_wr_bitmap
&
1350 (1 << card
->curr_wr_port
)) ||
1351 !MP_TX_AGGR_BUF_HAS_ROOM(
1352 card
, pkt_len
+ next_pkt_len
))
1353 f_send_aggr_buf
= 1;
1355 /* No room in Aggr buf, send it */
1356 f_send_aggr_buf
= 1;
1358 if (MP_TX_AGGR_PORT_LIMIT_REACHED(card
) ||
1359 !(card
->mp_wr_bitmap
&
1360 (1 << card
->curr_wr_port
)))
1363 f_postcopy_cur_buf
= 1;
1366 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
) &&
1367 (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1368 f_precopy_cur_buf
= 1;
1373 /* Last pkt in TX queue */
1374 dev_dbg(adapter
->dev
, "info: %s: Last packet in Tx Queue.\n",
1377 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1378 /* some packs in Aggr buf already */
1379 f_send_aggr_buf
= 1;
1381 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
))
1382 f_precopy_cur_buf
= 1;
1384 /* No room in Aggr buf, send it */
1391 if (f_precopy_cur_buf
) {
1392 dev_dbg(adapter
->dev
, "data: %s: precopy current buffer\n",
1394 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1396 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card
) ||
1397 MP_TX_AGGR_PORT_LIMIT_REACHED(card
))
1398 /* No more pkts allowed in Aggr buf, send it */
1399 f_send_aggr_buf
= 1;
1402 if (f_send_aggr_buf
) {
1403 dev_dbg(adapter
->dev
, "data: %s: send aggr buffer: %d %d\n",
1405 card
->mpa_tx
.start_port
, card
->mpa_tx
.ports
);
1406 ret
= mwifiex_write_data_to_card(adapter
, card
->mpa_tx
.buf
,
1407 card
->mpa_tx
.buf_len
,
1408 (adapter
->ioport
| 0x1000 |
1409 (card
->mpa_tx
.ports
<< 4)) +
1410 card
->mpa_tx
.start_port
);
1412 MP_TX_AGGR_BUF_RESET(card
);
1416 if (f_send_cur_buf
) {
1417 dev_dbg(adapter
->dev
, "data: %s: send current buffer %d\n",
1419 ret
= mwifiex_write_data_to_card(adapter
, payload
, pkt_len
,
1420 adapter
->ioport
+ port
);
1423 if (f_postcopy_cur_buf
) {
1424 dev_dbg(adapter
->dev
, "data: %s: postcopy current buffer\n",
1426 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1433 * This function downloads data from driver to card.
1435 * Both commands and data packets are transferred to the card by this
1438 * This function adds the SDIO specific header to the front of the buffer
1439 * before transferring. The header contains the length of the packet and
1440 * the type. The firmware handles the packets based upon this set type.
1442 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter
*adapter
,
1443 u8 type
, struct sk_buff
*skb
,
1444 struct mwifiex_tx_param
*tx_param
)
1446 struct sdio_mmc_card
*card
= adapter
->card
;
1450 u8 port
= CTRL_PORT
;
1451 u8
*payload
= (u8
*)skb
->data
;
1452 u32 pkt_len
= skb
->len
;
1454 /* Allocate buffer and copy payload */
1455 blk_size
= MWIFIEX_SDIO_BLOCK_SIZE
;
1456 buf_block_len
= (pkt_len
+ blk_size
- 1) / blk_size
;
1457 *(u16
*) &payload
[0] = (u16
) pkt_len
;
1458 *(u16
*) &payload
[2] = type
;
1461 * This is SDIO specific header
1463 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1464 * MWIFIEX_TYPE_EVENT = 3)
1466 if (type
== MWIFIEX_TYPE_DATA
) {
1467 ret
= mwifiex_get_wr_port_data(adapter
, &port
);
1469 dev_err(adapter
->dev
, "%s: no wr_port available\n",
1474 adapter
->cmd_sent
= true;
1475 /* Type must be MWIFIEX_TYPE_CMD */
1477 if (pkt_len
<= INTF_HEADER_LEN
||
1478 pkt_len
> MWIFIEX_UPLD_SIZE
)
1479 dev_err(adapter
->dev
, "%s: payload=%p, nb=%d\n",
1480 __func__
, payload
, pkt_len
);
1483 /* Transfer data to card */
1484 pkt_len
= buf_block_len
* blk_size
;
1487 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1488 port
, tx_param
->next_pkt_len
1491 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1495 if (type
== MWIFIEX_TYPE_CMD
)
1496 adapter
->cmd_sent
= false;
1497 if (type
== MWIFIEX_TYPE_DATA
)
1498 adapter
->data_sent
= false;
1500 if (type
== MWIFIEX_TYPE_DATA
) {
1501 if (!(card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1502 adapter
->data_sent
= true;
1504 adapter
->data_sent
= false;
1512 * This function allocates the MPA Tx and Rx buffers.
1514 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter
*adapter
,
1515 u32 mpa_tx_buf_size
, u32 mpa_rx_buf_size
)
1517 struct sdio_mmc_card
*card
= adapter
->card
;
1520 card
->mpa_tx
.buf
= kzalloc(mpa_tx_buf_size
, GFP_KERNEL
);
1521 if (!card
->mpa_tx
.buf
) {
1522 dev_err(adapter
->dev
, "could not alloc buffer for MP-A TX\n");
1527 card
->mpa_tx
.buf_size
= mpa_tx_buf_size
;
1529 card
->mpa_rx
.buf
= kzalloc(mpa_rx_buf_size
, GFP_KERNEL
);
1530 if (!card
->mpa_rx
.buf
) {
1531 dev_err(adapter
->dev
, "could not alloc buffer for MP-A RX\n");
1536 card
->mpa_rx
.buf_size
= mpa_rx_buf_size
;
1540 kfree(card
->mpa_tx
.buf
);
1541 kfree(card
->mpa_rx
.buf
);
1548 * This function unregisters the SDIO device.
1550 * The SDIO IRQ is released, the function is disabled and driver
1551 * data is set to null.
1554 mwifiex_unregister_dev(struct mwifiex_adapter
*adapter
)
1556 struct sdio_mmc_card
*card
= adapter
->card
;
1558 if (adapter
->card
) {
1559 /* Release the SDIO IRQ */
1560 sdio_claim_host(card
->func
);
1561 sdio_release_irq(card
->func
);
1562 sdio_disable_func(card
->func
);
1563 sdio_release_host(card
->func
);
1564 sdio_set_drvdata(card
->func
, NULL
);
1569 * This function registers the SDIO device.
1571 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1573 static int mwifiex_register_dev(struct mwifiex_adapter
*adapter
)
1576 struct sdio_mmc_card
*card
= adapter
->card
;
1577 struct sdio_func
*func
= card
->func
;
1579 /* save adapter pointer in card */
1580 card
->adapter
= adapter
;
1582 sdio_claim_host(func
);
1584 /* Request the SDIO IRQ */
1585 ret
= sdio_claim_irq(func
, mwifiex_sdio_interrupt
);
1587 pr_err("claim irq failed: ret=%d\n", ret
);
1591 /* Set block size */
1592 ret
= sdio_set_block_size(card
->func
, MWIFIEX_SDIO_BLOCK_SIZE
);
1594 pr_err("cannot set SDIO block size\n");
1599 sdio_release_host(func
);
1600 sdio_set_drvdata(func
, card
);
1602 adapter
->dev
= &func
->dev
;
1604 switch (func
->device
) {
1605 case SDIO_DEVICE_ID_MARVELL_8786
:
1606 strcpy(adapter
->fw_name
, SD8786_DEFAULT_FW_NAME
);
1608 case SDIO_DEVICE_ID_MARVELL_8797
:
1609 strcpy(adapter
->fw_name
, SD8797_DEFAULT_FW_NAME
);
1611 case SDIO_DEVICE_ID_MARVELL_8787
:
1613 strcpy(adapter
->fw_name
, SD8787_DEFAULT_FW_NAME
);
1620 sdio_release_irq(func
);
1622 sdio_disable_func(func
);
1623 sdio_release_host(func
);
1624 adapter
->card
= NULL
;
1630 * This function initializes the SDIO driver.
1632 * The following initializations steps are followed -
1633 * - Read the Host interrupt status register to acknowledge
1634 * the first interrupt got from bootloader
1635 * - Disable host interrupt mask register
1637 * - Initialize SDIO variables in card
1638 * - Allocate MP registers
1639 * - Allocate MPA Tx and Rx buffers
1641 static int mwifiex_init_sdio(struct mwifiex_adapter
*adapter
)
1643 struct sdio_mmc_card
*card
= adapter
->card
;
1648 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1649 * from the bootloader. If we don't do this we get a interrupt
1650 * as soon as we register the irq.
1652 mwifiex_read_reg(adapter
, HOST_INTSTATUS_REG
, &sdio_ireg
);
1654 /* Disable host interrupt mask register for SDIO */
1655 mwifiex_sdio_disable_host_int(adapter
);
1657 /* Get SDIO ioport */
1658 mwifiex_init_sdio_ioport(adapter
);
1660 /* Initialize SDIO variables in card */
1661 card
->mp_rd_bitmap
= 0;
1662 card
->mp_wr_bitmap
= 0;
1663 card
->curr_rd_port
= 1;
1664 card
->curr_wr_port
= 1;
1666 card
->mp_data_port_mask
= DATA_PORT_MASK
;
1668 card
->mpa_tx
.buf_len
= 0;
1669 card
->mpa_tx
.pkt_cnt
= 0;
1670 card
->mpa_tx
.start_port
= 0;
1672 card
->mpa_tx
.enabled
= 1;
1673 card
->mpa_tx
.pkt_aggr_limit
= SDIO_MP_AGGR_DEF_PKT_LIMIT
;
1675 card
->mpa_rx
.buf_len
= 0;
1676 card
->mpa_rx
.pkt_cnt
= 0;
1677 card
->mpa_rx
.start_port
= 0;
1679 card
->mpa_rx
.enabled
= 1;
1680 card
->mpa_rx
.pkt_aggr_limit
= SDIO_MP_AGGR_DEF_PKT_LIMIT
;
1682 /* Allocate buffers for SDIO MP-A */
1683 card
->mp_regs
= kzalloc(MAX_MP_REGS
, GFP_KERNEL
);
1684 if (!card
->mp_regs
) {
1685 dev_err(adapter
->dev
, "failed to alloc mp_regs\n");
1689 ret
= mwifiex_alloc_sdio_mpa_buffers(adapter
,
1690 SDIO_MP_TX_AGGR_DEF_BUF_SIZE
,
1691 SDIO_MP_RX_AGGR_DEF_BUF_SIZE
);
1693 dev_err(adapter
->dev
, "failed to alloc sdio mp-a buffers\n");
1694 kfree(card
->mp_regs
);
1702 * This function resets the MPA Tx and Rx buffers.
1704 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter
*adapter
)
1706 struct sdio_mmc_card
*card
= adapter
->card
;
1708 MP_TX_AGGR_BUF_RESET(card
);
1709 MP_RX_AGGR_BUF_RESET(card
);
1713 * This function cleans up the allocated card buffers.
1715 * The following are freed by this function -
1720 static void mwifiex_cleanup_sdio(struct mwifiex_adapter
*adapter
)
1722 struct sdio_mmc_card
*card
= adapter
->card
;
1724 kfree(card
->mp_regs
);
1725 kfree(card
->mpa_tx
.buf
);
1726 kfree(card
->mpa_rx
.buf
);
1730 * This function updates the MP end port in card.
1733 mwifiex_update_mp_end_port(struct mwifiex_adapter
*adapter
, u16 port
)
1735 struct sdio_mmc_card
*card
= adapter
->card
;
1738 card
->mp_end_port
= port
;
1740 card
->mp_data_port_mask
= DATA_PORT_MASK
;
1742 for (i
= 1; i
<= MAX_PORT
- card
->mp_end_port
; i
++)
1743 card
->mp_data_port_mask
&= ~(1 << (MAX_PORT
- i
));
1745 card
->curr_wr_port
= 1;
1747 dev_dbg(adapter
->dev
, "cmd: mp_end_port %d, data port mask 0x%x\n",
1748 port
, card
->mp_data_port_mask
);
1751 static struct mwifiex_if_ops sdio_ops
= {
1752 .init_if
= mwifiex_init_sdio
,
1753 .cleanup_if
= mwifiex_cleanup_sdio
,
1754 .check_fw_status
= mwifiex_check_fw_status
,
1755 .prog_fw
= mwifiex_prog_fw_w_helper
,
1756 .register_dev
= mwifiex_register_dev
,
1757 .unregister_dev
= mwifiex_unregister_dev
,
1758 .enable_int
= mwifiex_sdio_enable_host_int
,
1759 .process_int_status
= mwifiex_process_int_status
,
1760 .host_to_card
= mwifiex_sdio_host_to_card
,
1761 .wakeup
= mwifiex_pm_wakeup_card
,
1762 .wakeup_complete
= mwifiex_pm_wakeup_card_complete
,
1765 .update_mp_end_port
= mwifiex_update_mp_end_port
,
1766 .cleanup_mpa_buf
= mwifiex_cleanup_mpa_buf
,
1767 .cmdrsp_complete
= mwifiex_sdio_cmdrsp_complete
,
1768 .event_complete
= mwifiex_sdio_event_complete
,
1772 * This function initializes the SDIO driver.
1774 * This initiates the semaphore and registers the device with
1778 mwifiex_sdio_init_module(void)
1780 sema_init(&add_remove_card_sem
, 1);
1782 /* Clear the flag in case user removes the card. */
1785 return sdio_register_driver(&mwifiex_sdio
);
1789 * This function cleans up the SDIO driver.
1791 * The following major steps are followed for cleanup -
1792 * - Resume the device if its suspended
1793 * - Disconnect the device if connected
1794 * - Shutdown the firmware
1795 * - Unregister the device from SDIO bus.
1798 mwifiex_sdio_cleanup_module(void)
1800 if (!down_interruptible(&add_remove_card_sem
))
1801 up(&add_remove_card_sem
);
1803 /* Set the flag as user is removing this module. */
1806 sdio_unregister_driver(&mwifiex_sdio
);
1809 module_init(mwifiex_sdio_init_module
);
1810 module_exit(mwifiex_sdio_cleanup_module
);
1812 MODULE_AUTHOR("Marvell International Ltd.");
1813 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION
);
1814 MODULE_VERSION(SDIO_VERSION
);
1815 MODULE_LICENSE("GPL v2");
1816 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME
);
1817 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME
);
1818 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME
);