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
)
127 if (adapter
->is_suspended
)
128 mwifiex_sdio_resume(adapter
->dev
);
130 for (i
= 0; i
< adapter
->priv_num
; i
++)
131 if ((GET_BSS_ROLE(adapter
->priv
[i
]) ==
132 MWIFIEX_BSS_ROLE_STA
) &&
133 adapter
->priv
[i
]->media_connected
)
134 mwifiex_deauthenticate(adapter
->priv
[i
], NULL
);
136 priv
= mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_ANY
);
137 mwifiex_disable_auto_ds(priv
);
138 mwifiex_init_shutdown_fw(priv
, MWIFIEX_FUNC_SHUTDOWN
);
141 mwifiex_remove_card(card
->adapter
, &add_remove_card_sem
);
148 * Kernel needs to suspend all functions separately. Therefore all
149 * registered functions must have drivers with suspend and resume
150 * methods. Failing that the kernel simply removes the whole card.
152 * If already not suspended, this function allocates and sends a host
153 * sleep activate request to the firmware and turns off the traffic.
155 static int mwifiex_sdio_suspend(struct device
*dev
)
157 struct sdio_func
*func
= dev_to_sdio_func(dev
);
158 struct sdio_mmc_card
*card
;
159 struct mwifiex_adapter
*adapter
;
160 mmc_pm_flag_t pm_flag
= 0;
166 pm_flag
= sdio_get_host_pm_caps(func
);
167 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
168 sdio_func_id(func
), pm_flag
);
169 if (!(pm_flag
& MMC_PM_KEEP_POWER
)) {
170 pr_err("%s: cannot remain alive while host is"
171 " suspended\n", sdio_func_id(func
));
175 card
= sdio_get_drvdata(func
);
176 if (!card
|| !card
->adapter
) {
177 pr_err("suspend: invalid card or adapter\n");
181 pr_err("suspend: sdio_func is not specified\n");
185 adapter
= card
->adapter
;
187 /* Enable the Host Sleep */
188 hs_actived
= mwifiex_enable_hs(adapter
);
190 pr_debug("cmd: suspend with MMC_PM_KEEP_POWER\n");
191 ret
= sdio_set_host_pm_flags(func
, MMC_PM_KEEP_POWER
);
194 /* Indicate device suspended */
195 adapter
->is_suspended
= true;
197 for (i
= 0; i
< adapter
->priv_num
; i
++)
198 netif_carrier_off(adapter
->priv
[i
]->netdev
);
206 * Kernel needs to suspend all functions separately. Therefore all
207 * registered functions must have drivers with suspend and resume
208 * methods. Failing that the kernel simply removes the whole card.
210 * If already not resumed, this function turns on the traffic and
211 * sends a host sleep cancel request to the firmware.
213 static int mwifiex_sdio_resume(struct device
*dev
)
215 struct sdio_func
*func
= dev_to_sdio_func(dev
);
216 struct sdio_mmc_card
*card
;
217 struct mwifiex_adapter
*adapter
;
218 mmc_pm_flag_t pm_flag
= 0;
222 pm_flag
= sdio_get_host_pm_caps(func
);
223 card
= sdio_get_drvdata(func
);
224 if (!card
|| !card
->adapter
) {
225 pr_err("resume: invalid card or adapter\n");
229 pr_err("resume: sdio_func is not specified\n");
233 adapter
= card
->adapter
;
235 if (!adapter
->is_suspended
) {
236 dev_warn(adapter
->dev
, "device already resumed\n");
240 adapter
->is_suspended
= false;
242 for (i
= 0; i
< adapter
->priv_num
; i
++)
243 if (adapter
->priv
[i
]->media_connected
)
244 netif_carrier_on(adapter
->priv
[i
]->netdev
);
246 /* Disable Host Sleep */
247 mwifiex_cancel_hs(mwifiex_get_priv(adapter
, MWIFIEX_BSS_ROLE_STA
),
253 /* Device ID for SD8787 */
254 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
255 /* Device ID for SD8797 */
256 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
259 static const struct sdio_device_id mwifiex_ids
[] = {
260 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8787
)},
261 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL
, SDIO_DEVICE_ID_MARVELL_8797
)},
265 MODULE_DEVICE_TABLE(sdio
, mwifiex_ids
);
267 static const struct dev_pm_ops mwifiex_sdio_pm_ops
= {
268 .suspend
= mwifiex_sdio_suspend
,
269 .resume
= mwifiex_sdio_resume
,
272 static struct sdio_driver mwifiex_sdio
= {
273 .name
= "mwifiex_sdio",
274 .id_table
= mwifiex_ids
,
275 .probe
= mwifiex_sdio_probe
,
276 .remove
= mwifiex_sdio_remove
,
278 .owner
= THIS_MODULE
,
279 .pm
= &mwifiex_sdio_pm_ops
,
284 * This function writes data into SDIO card register.
287 mwifiex_write_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u32 data
)
289 struct sdio_mmc_card
*card
= adapter
->card
;
292 sdio_claim_host(card
->func
);
293 sdio_writeb(card
->func
, (u8
) data
, reg
, &ret
);
294 sdio_release_host(card
->func
);
300 * This function reads data from SDIO card register.
303 mwifiex_read_reg(struct mwifiex_adapter
*adapter
, u32 reg
, u32
*data
)
305 struct sdio_mmc_card
*card
= adapter
->card
;
309 sdio_claim_host(card
->func
);
310 val
= sdio_readb(card
->func
, reg
, &ret
);
311 sdio_release_host(card
->func
);
319 * This function writes multiple data into SDIO card memory.
321 * This does not work in suspended mode.
324 mwifiex_write_data_sync(struct mwifiex_adapter
*adapter
,
325 u8
*buffer
, u32 pkt_len
, u32 port
)
327 struct sdio_mmc_card
*card
= adapter
->card
;
330 (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
: BLOCK_MODE
;
331 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
334 BLOCK_MODE
) ? (pkt_len
/
335 MWIFIEX_SDIO_BLOCK_SIZE
) : pkt_len
;
336 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
338 if (adapter
->is_suspended
) {
339 dev_err(adapter
->dev
,
340 "%s: not allowed while suspended\n", __func__
);
344 sdio_claim_host(card
->func
);
346 if (!sdio_writesb(card
->func
, ioport
, buffer
, blk_cnt
* blk_size
))
349 sdio_release_host(card
->func
);
355 * This function reads multiple data from SDIO card memory.
357 static int mwifiex_read_data_sync(struct mwifiex_adapter
*adapter
, u8
*buffer
,
358 u32 len
, u32 port
, u8 claim
)
360 struct sdio_mmc_card
*card
= adapter
->card
;
362 u8 blk_mode
= (port
& MWIFIEX_SDIO_BYTE_MODE_MASK
) ? BYTE_MODE
364 u32 blk_size
= (blk_mode
== BLOCK_MODE
) ? MWIFIEX_SDIO_BLOCK_SIZE
: 1;
365 u32 blk_cnt
= (blk_mode
== BLOCK_MODE
) ? (len
/ MWIFIEX_SDIO_BLOCK_SIZE
)
367 u32 ioport
= (port
& MWIFIEX_SDIO_IO_PORT_MASK
);
370 sdio_claim_host(card
->func
);
372 if (!sdio_readsb(card
->func
, buffer
, ioport
, blk_cnt
* blk_size
))
376 sdio_release_host(card
->func
);
382 * This function wakes up the card.
384 * A host power up command is written to the card configuration
385 * register to wake up the card.
387 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter
*adapter
)
389 dev_dbg(adapter
->dev
, "event: wakeup device...\n");
391 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, HOST_POWER_UP
);
395 * This function is called after the card has woken up.
397 * The card configuration register is reset.
399 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter
*adapter
)
401 dev_dbg(adapter
->dev
, "cmd: wakeup device completed\n");
403 return mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0);
407 * This function initializes the IO ports.
409 * The following operations are performed -
410 * - Read the IO ports (0, 1 and 2)
411 * - Set host interrupt Reset-To-Read to clear
412 * - Set auto re-enable interrupt
414 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter
*adapter
)
420 /* Read the IO port */
421 if (!mwifiex_read_reg(adapter
, IO_PORT_0_REG
, ®
))
422 adapter
->ioport
|= (reg
& 0xff);
426 if (!mwifiex_read_reg(adapter
, IO_PORT_1_REG
, ®
))
427 adapter
->ioport
|= ((reg
& 0xff) << 8);
431 if (!mwifiex_read_reg(adapter
, IO_PORT_2_REG
, ®
))
432 adapter
->ioport
|= ((reg
& 0xff) << 16);
436 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter
->ioport
);
438 /* Set Host interrupt reset to read to clear */
439 if (!mwifiex_read_reg(adapter
, HOST_INT_RSR_REG
, ®
))
440 mwifiex_write_reg(adapter
, HOST_INT_RSR_REG
,
441 reg
| SDIO_INT_MASK
);
445 /* Dnld/Upld ready set to auto reset */
446 if (!mwifiex_read_reg(adapter
, CARD_MISC_CFG_REG
, ®
))
447 mwifiex_write_reg(adapter
, CARD_MISC_CFG_REG
,
448 reg
| AUTO_RE_ENABLE_INT
);
456 * This function sends data to the card.
458 static int mwifiex_write_data_to_card(struct mwifiex_adapter
*adapter
,
459 u8
*payload
, u32 pkt_len
, u32 port
)
465 ret
= mwifiex_write_data_sync(adapter
, payload
, pkt_len
, port
);
468 dev_err(adapter
->dev
, "host_to_card, write iomem"
469 " (%d) failed: %d\n", i
, ret
);
470 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
471 dev_err(adapter
->dev
, "write CFG reg failed\n");
474 if (i
> MAX_WRITE_IOMEM_RETRY
)
483 * This function gets the read port.
485 * If control port bit is set in MP read bitmap, the control port
486 * is returned, otherwise the current read port is returned and
487 * the value is increased (provided it does not reach the maximum
488 * limit, in which case it is reset to 1)
490 static int mwifiex_get_rd_port(struct mwifiex_adapter
*adapter
, u8
*port
)
492 struct sdio_mmc_card
*card
= adapter
->card
;
493 u16 rd_bitmap
= card
->mp_rd_bitmap
;
495 dev_dbg(adapter
->dev
, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap
);
497 if (!(rd_bitmap
& (CTRL_PORT_MASK
| DATA_PORT_MASK
)))
500 if (card
->mp_rd_bitmap
& CTRL_PORT_MASK
) {
501 card
->mp_rd_bitmap
&= (u16
) (~CTRL_PORT_MASK
);
503 dev_dbg(adapter
->dev
, "data: port=%d mp_rd_bitmap=0x%04x\n",
504 *port
, card
->mp_rd_bitmap
);
506 if (card
->mp_rd_bitmap
& (1 << card
->curr_rd_port
)) {
507 card
->mp_rd_bitmap
&= (u16
)
508 (~(1 << card
->curr_rd_port
));
509 *port
= card
->curr_rd_port
;
511 if (++card
->curr_rd_port
== MAX_PORT
)
512 card
->curr_rd_port
= 1;
517 dev_dbg(adapter
->dev
,
518 "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n",
519 *port
, rd_bitmap
, card
->mp_rd_bitmap
);
525 * This function gets the write port for data.
527 * The current write port is returned if available and the value is
528 * increased (provided it does not reach the maximum limit, in which
529 * case it is reset to 1)
531 static int mwifiex_get_wr_port_data(struct mwifiex_adapter
*adapter
, u8
*port
)
533 struct sdio_mmc_card
*card
= adapter
->card
;
534 u16 wr_bitmap
= card
->mp_wr_bitmap
;
536 dev_dbg(adapter
->dev
, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap
);
538 if (!(wr_bitmap
& card
->mp_data_port_mask
))
541 if (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)) {
542 card
->mp_wr_bitmap
&= (u16
) (~(1 << card
->curr_wr_port
));
543 *port
= card
->curr_wr_port
;
544 if (++card
->curr_wr_port
== card
->mp_end_port
)
545 card
->curr_wr_port
= 1;
547 adapter
->data_sent
= true;
551 if (*port
== CTRL_PORT
) {
552 dev_err(adapter
->dev
, "invalid data port=%d cur port=%d"
553 " mp_wr_bitmap=0x%04x -> 0x%04x\n",
554 *port
, card
->curr_wr_port
, wr_bitmap
,
559 dev_dbg(adapter
->dev
, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n",
560 *port
, wr_bitmap
, card
->mp_wr_bitmap
);
566 * This function polls the card status.
569 mwifiex_sdio_poll_card_status(struct mwifiex_adapter
*adapter
, u8 bits
)
574 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
575 if (mwifiex_read_reg(adapter
, CARD_STATUS_REG
, &cs
))
577 else if ((cs
& bits
) == bits
)
580 usleep_range(10, 20);
583 dev_err(adapter
->dev
, "poll card status failed, tries = %d\n", tries
);
589 * This function reads the firmware status.
592 mwifiex_sdio_read_fw_status(struct mwifiex_adapter
*adapter
, u16
*dat
)
596 if (mwifiex_read_reg(adapter
, CARD_FW_STATUS0_REG
, &fws0
))
599 if (mwifiex_read_reg(adapter
, CARD_FW_STATUS1_REG
, &fws1
))
602 *dat
= (u16
) ((fws1
<< 8) | fws0
);
608 * This function disables the host interrupt.
610 * The host interrupt mask is read, the disable bit is reset and
611 * written back to the card host interrupt mask register.
613 static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter
*adapter
)
617 /* Read back the host_int_mask register */
618 if (mwifiex_read_reg(adapter
, HOST_INT_MASK_REG
, &host_int_mask
))
621 /* Update with the mask and write back to the register */
622 host_int_mask
&= ~HOST_INT_DISABLE
;
624 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
, host_int_mask
)) {
625 dev_err(adapter
->dev
, "disable host interrupt failed\n");
633 * This function enables the host interrupt.
635 * The host interrupt enable mask is written to the card
636 * host interrupt mask register.
638 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter
*adapter
)
640 /* Simply write the mask to the register */
641 if (mwifiex_write_reg(adapter
, HOST_INT_MASK_REG
, HOST_INT_ENABLE
)) {
642 dev_err(adapter
->dev
, "enable host interrupt failed\n");
649 * This function sends a data buffer to the card.
651 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter
*adapter
,
652 u32
*type
, u8
*buffer
,
653 u32 npayload
, u32 ioport
)
659 dev_err(adapter
->dev
, "%s: buffer is NULL\n", __func__
);
663 ret
= mwifiex_read_data_sync(adapter
, buffer
, npayload
, ioport
, 1);
666 dev_err(adapter
->dev
, "%s: read iomem failed: %d\n", __func__
,
671 nb
= le16_to_cpu(*(__le16
*) (buffer
));
673 dev_err(adapter
->dev
, "%s: invalid packet, nb=%d npayload=%d\n",
674 __func__
, nb
, npayload
);
678 *type
= le16_to_cpu(*(__le16
*) (buffer
+ 2));
684 * This function downloads the firmware to the card.
686 * Firmware is downloaded to the card in blocks. Every block download
687 * is tested for CRC errors, and retried a number of times before
690 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter
*adapter
,
691 struct mwifiex_fw_image
*fw
)
694 u8
*firmware
= fw
->fw_buf
;
695 u32 firmware_len
= fw
->fw_len
;
700 u32 txlen
, tx_blocks
= 0, tries
;
704 dev_err(adapter
->dev
,
705 "firmware image not found! Terminating download\n");
709 dev_dbg(adapter
->dev
, "info: downloading FW image (%d bytes)\n",
712 /* Assume that the allocated buffer is 8-byte aligned */
713 fwbuf
= kzalloc(MWIFIEX_UPLD_SIZE
, GFP_KERNEL
);
715 dev_err(adapter
->dev
,
716 "unable to alloc buffer for FW. Terminating dnld\n");
720 /* Perform firmware data transfer */
722 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
724 ret
= mwifiex_sdio_poll_card_status(adapter
, CARD_IO_READY
|
727 dev_err(adapter
->dev
, "FW download with helper:"
728 " poll status timeout @ %d\n", offset
);
733 if (offset
>= firmware_len
)
736 for (tries
= 0; tries
< MAX_POLL_TRIES
; tries
++) {
737 ret
= mwifiex_read_reg(adapter
, HOST_F1_RD_BASE_0
,
740 dev_err(adapter
->dev
,
741 "dev BASE0 register read failed: "
742 "base0=%#04X(%d). Terminating dnld\n",
746 ret
= mwifiex_read_reg(adapter
, HOST_F1_RD_BASE_1
,
749 dev_err(adapter
->dev
,
750 "dev BASE1 register read failed: "
751 "base1=%#04X(%d). Terminating dnld\n",
755 len
= (u16
) (((base1
& 0xff) << 8) | (base0
& 0xff));
760 usleep_range(10, 20);
765 } else if (len
> MWIFIEX_UPLD_SIZE
) {
766 dev_err(adapter
->dev
,
767 "FW dnld failed @ %d, invalid length %d\n",
777 if (i
> MAX_WRITE_IOMEM_RETRY
) {
778 dev_err(adapter
->dev
,
779 "FW dnld failed @ %d, over max retry\n",
784 dev_err(adapter
->dev
, "CRC indicated by the helper:"
785 " len = 0x%04X, txlen = %d\n", len
, txlen
);
787 /* Setting this to 0 to resend from same offset */
792 /* Set blocksize to transfer - checking for last
794 if (firmware_len
- offset
< txlen
)
795 txlen
= firmware_len
- offset
;
797 tx_blocks
= (txlen
+ MWIFIEX_SDIO_BLOCK_SIZE
- 1)
798 / MWIFIEX_SDIO_BLOCK_SIZE
;
800 /* Copy payload to buffer */
801 memmove(fwbuf
, &firmware
[offset
], txlen
);
804 ret
= mwifiex_write_data_sync(adapter
, fwbuf
, tx_blocks
*
805 MWIFIEX_SDIO_BLOCK_SIZE
,
808 dev_err(adapter
->dev
,
809 "FW download, write iomem (%d) failed @ %d\n",
811 if (mwifiex_write_reg(adapter
, CONFIGURATION_REG
, 0x04))
812 dev_err(adapter
->dev
, "write CFG reg failed\n");
821 dev_dbg(adapter
->dev
, "info: FW download over, size %d bytes\n",
831 * This function checks the firmware status in card.
833 * The winner interface is also determined by this function.
835 static int mwifiex_check_fw_status(struct mwifiex_adapter
*adapter
,
843 /* Wait for firmware initialization event */
844 for (tries
= 0; tries
< poll_num
; tries
++) {
845 ret
= mwifiex_sdio_read_fw_status(adapter
, &firmware_stat
);
848 if (firmware_stat
== FIRMWARE_READY_SDIO
) {
859 (adapter
, CARD_FW_STATUS0_REG
, &winner_status
))
871 * This function reads the interrupt status from card.
873 static void mwifiex_interrupt_status(struct mwifiex_adapter
*adapter
)
875 struct sdio_mmc_card
*card
= adapter
->card
;
879 if (mwifiex_read_data_sync(adapter
, card
->mp_regs
, MAX_MP_REGS
,
880 REG_PORT
| MWIFIEX_SDIO_BYTE_MODE_MASK
,
882 dev_err(adapter
->dev
, "read mp_regs failed\n");
886 sdio_ireg
= card
->mp_regs
[HOST_INTSTATUS_REG
];
889 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
890 * Clear the interrupt status register
892 dev_dbg(adapter
->dev
, "int: sdio_ireg = %#x\n", sdio_ireg
);
893 spin_lock_irqsave(&adapter
->int_lock
, flags
);
894 adapter
->int_status
|= sdio_ireg
;
895 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
900 * SDIO interrupt handler.
902 * This function reads the interrupt status from firmware and assigns
903 * the main process in workqueue which will handle the interrupt.
906 mwifiex_sdio_interrupt(struct sdio_func
*func
)
908 struct mwifiex_adapter
*adapter
;
909 struct sdio_mmc_card
*card
;
911 card
= sdio_get_drvdata(func
);
912 if (!card
|| !card
->adapter
) {
913 pr_debug("int: func=%p card=%p adapter=%p\n",
914 func
, card
, card
? card
->adapter
: NULL
);
917 adapter
= card
->adapter
;
919 if (adapter
->surprise_removed
)
922 if (!adapter
->pps_uapsd_mode
&& adapter
->ps_state
== PS_STATE_SLEEP
)
923 adapter
->ps_state
= PS_STATE_AWAKE
;
925 mwifiex_interrupt_status(adapter
);
926 queue_work(adapter
->workqueue
, &adapter
->main_work
);
930 * This function decodes a received packet.
932 * Based on the type, the packet is treated as either a data, or
933 * a command response, or an event, and the correct handler
934 * function is invoked.
936 static int mwifiex_decode_rx_packet(struct mwifiex_adapter
*adapter
,
937 struct sk_buff
*skb
, u32 upld_typ
)
941 skb_pull(skb
, INTF_HEADER_LEN
);
944 case MWIFIEX_TYPE_DATA
:
945 dev_dbg(adapter
->dev
, "info: --- Rx: Data packet ---\n");
946 mwifiex_handle_rx_packet(adapter
, skb
);
949 case MWIFIEX_TYPE_CMD
:
950 dev_dbg(adapter
->dev
, "info: --- Rx: Cmd Response ---\n");
951 /* take care of curr_cmd = NULL case */
952 if (!adapter
->curr_cmd
) {
953 cmd_buf
= adapter
->upld_buf
;
955 if (adapter
->ps_state
== PS_STATE_SLEEP_CFM
)
956 mwifiex_process_sleep_confirm_resp(adapter
,
960 memcpy(cmd_buf
, skb
->data
,
961 min_t(u32
, MWIFIEX_SIZE_OF_CMD_BUFFER
,
964 dev_kfree_skb_any(skb
);
966 adapter
->cmd_resp_received
= true;
967 adapter
->curr_cmd
->resp_skb
= skb
;
971 case MWIFIEX_TYPE_EVENT
:
972 dev_dbg(adapter
->dev
, "info: --- Rx: Event ---\n");
973 adapter
->event_cause
= *(u32
*) skb
->data
;
975 skb_pull(skb
, MWIFIEX_EVENT_HEADER_LEN
);
977 if ((skb
->len
> 0) && (skb
->len
< MAX_EVENT_SIZE
))
978 memcpy(adapter
->event_body
, skb
->data
, skb
->len
);
980 /* event cause has been saved to adapter->event_cause */
981 adapter
->event_received
= true;
982 adapter
->event_skb
= skb
;
987 dev_err(adapter
->dev
, "unknown upload type %#x\n", upld_typ
);
988 dev_kfree_skb_any(skb
);
996 * This function transfers received packets from card to driver, performing
997 * aggregation if required.
999 * For data received on control port, or if aggregation is disabled, the
1000 * received buffers are uploaded as separate packets. However, if aggregation
1001 * is enabled and required, the buffers are copied onto an aggregation buffer,
1002 * provided there is space left, processed and finally uploaded.
1004 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter
*adapter
,
1005 struct sk_buff
*skb
, u8 port
)
1007 struct sdio_mmc_card
*card
= adapter
->card
;
1008 s32 f_do_rx_aggr
= 0;
1009 s32 f_do_rx_cur
= 0;
1011 struct sk_buff
*skb_deaggr
;
1013 u32 pkt_len
, pkt_type
= 0;
1015 u32 rx_len
= skb
->len
;
1017 if (port
== CTRL_PORT
) {
1018 /* Read the command Resp without aggr */
1019 dev_dbg(adapter
->dev
, "info: %s: no aggregation for cmd "
1020 "response\n", __func__
);
1023 goto rx_curr_single
;
1026 if (!card
->mpa_rx
.enabled
) {
1027 dev_dbg(adapter
->dev
, "info: %s: rx aggregation disabled\n",
1031 goto rx_curr_single
;
1034 if (card
->mp_rd_bitmap
& (~((u16
) CTRL_PORT_MASK
))) {
1035 /* Some more data RX pending */
1036 dev_dbg(adapter
->dev
, "info: %s: not last packet\n", __func__
);
1038 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1039 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
)) {
1042 /* No room in Aggr buf, do rx aggr now */
1047 /* Rx aggr not in progress */
1052 /* No more data RX pending */
1053 dev_dbg(adapter
->dev
, "info: %s: last packet\n", __func__
);
1055 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1057 if (MP_RX_AGGR_BUF_HAS_ROOM(card
, skb
->len
))
1060 /* No room in Aggr buf, do rx aggr now */
1068 dev_dbg(adapter
->dev
, "info: current packet aggregation\n");
1069 /* Curr pkt can be aggregated */
1070 MP_RX_AGGR_SETUP(card
, skb
, port
);
1072 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card
) ||
1073 MP_RX_AGGR_PORT_LIMIT_REACHED(card
)) {
1074 dev_dbg(adapter
->dev
, "info: %s: aggregated packet "
1075 "limit reached\n", __func__
);
1076 /* No more pkts allowed in Aggr buf, rx it */
1082 /* do aggr RX now */
1083 dev_dbg(adapter
->dev
, "info: do_rx_aggr: num of packets: %d\n",
1084 card
->mpa_rx
.pkt_cnt
);
1086 if (mwifiex_read_data_sync(adapter
, card
->mpa_rx
.buf
,
1087 card
->mpa_rx
.buf_len
,
1088 (adapter
->ioport
| 0x1000 |
1089 (card
->mpa_rx
.ports
<< 4)) +
1090 card
->mpa_rx
.start_port
, 1))
1093 curr_ptr
= card
->mpa_rx
.buf
;
1095 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1097 /* get curr PKT len & type */
1098 pkt_len
= *(u16
*) &curr_ptr
[0];
1099 pkt_type
= *(u16
*) &curr_ptr
[2];
1101 /* copy pkt to deaggr buf */
1102 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1104 if ((pkt_type
== MWIFIEX_TYPE_DATA
) && (pkt_len
<=
1105 card
->mpa_rx
.len_arr
[pind
])) {
1107 memcpy(skb_deaggr
->data
, curr_ptr
, pkt_len
);
1109 skb_trim(skb_deaggr
, pkt_len
);
1111 /* Process de-aggr packet */
1112 mwifiex_decode_rx_packet(adapter
, skb_deaggr
,
1115 dev_err(adapter
->dev
, "wrong aggr pkt:"
1116 " type=%d len=%d max_len=%d\n",
1118 card
->mpa_rx
.len_arr
[pind
]);
1119 dev_kfree_skb_any(skb_deaggr
);
1121 curr_ptr
+= card
->mpa_rx
.len_arr
[pind
];
1123 MP_RX_AGGR_BUF_RESET(card
);
1128 dev_dbg(adapter
->dev
, "info: RX: port: %d, rx_len: %d\n",
1131 if (mwifiex_sdio_card_to_host(adapter
, &pkt_type
,
1132 skb
->data
, skb
->len
,
1133 adapter
->ioport
+ port
))
1136 mwifiex_decode_rx_packet(adapter
, skb
, pkt_type
);
1142 if (MP_RX_AGGR_IN_PROGRESS(card
)) {
1143 /* Multiport-aggregation transfer failed - cleanup */
1144 for (pind
= 0; pind
< card
->mpa_rx
.pkt_cnt
; pind
++) {
1145 /* copy pkt to deaggr buf */
1146 skb_deaggr
= card
->mpa_rx
.skb_arr
[pind
];
1147 dev_kfree_skb_any(skb_deaggr
);
1149 MP_RX_AGGR_BUF_RESET(card
);
1153 /* Single transfer pending. Free curr buff also */
1154 dev_kfree_skb_any(skb
);
1160 * This function checks the current interrupt status.
1162 * The following interrupts are checked and handled by this function -
1165 * - Packets received
1167 * Since the firmware does not generate download ready interrupt if the
1168 * port updated is command port only, command sent interrupt checking
1169 * should be done manually, and for every SDIO interrupt.
1171 * In case of Rx packets received, the packets are uploaded from card to
1172 * host and processed accordingly.
1174 static int mwifiex_process_int_status(struct mwifiex_adapter
*adapter
)
1176 struct sdio_mmc_card
*card
= adapter
->card
;
1179 struct sk_buff
*skb
;
1180 u8 port
= CTRL_PORT
;
1181 u32 len_reg_l
, len_reg_u
;
1184 unsigned long flags
;
1186 spin_lock_irqsave(&adapter
->int_lock
, flags
);
1187 sdio_ireg
= adapter
->int_status
;
1188 adapter
->int_status
= 0;
1189 spin_unlock_irqrestore(&adapter
->int_lock
, flags
);
1194 if (sdio_ireg
& DN_LD_HOST_INT_STATUS
) {
1195 card
->mp_wr_bitmap
= ((u16
) card
->mp_regs
[WR_BITMAP_U
]) << 8;
1196 card
->mp_wr_bitmap
|= (u16
) card
->mp_regs
[WR_BITMAP_L
];
1197 dev_dbg(adapter
->dev
, "int: DNLD: wr_bitmap=0x%04x\n",
1198 card
->mp_wr_bitmap
);
1199 if (adapter
->data_sent
&&
1200 (card
->mp_wr_bitmap
& card
->mp_data_port_mask
)) {
1201 dev_dbg(adapter
->dev
,
1202 "info: <--- Tx DONE Interrupt --->\n");
1203 adapter
->data_sent
= false;
1207 /* As firmware will not generate download ready interrupt if the port
1208 updated is command port only, cmd_sent should be done for any SDIO
1210 if (adapter
->cmd_sent
) {
1211 /* Check if firmware has attach buffer at command port and
1212 update just that in wr_bit_map. */
1213 card
->mp_wr_bitmap
|=
1214 (u16
) card
->mp_regs
[WR_BITMAP_L
] & CTRL_PORT_MASK
;
1215 if (card
->mp_wr_bitmap
& CTRL_PORT_MASK
)
1216 adapter
->cmd_sent
= false;
1219 dev_dbg(adapter
->dev
, "info: cmd_sent=%d data_sent=%d\n",
1220 adapter
->cmd_sent
, adapter
->data_sent
);
1221 if (sdio_ireg
& UP_LD_HOST_INT_STATUS
) {
1222 card
->mp_rd_bitmap
= ((u16
) card
->mp_regs
[RD_BITMAP_U
]) << 8;
1223 card
->mp_rd_bitmap
|= (u16
) card
->mp_regs
[RD_BITMAP_L
];
1224 dev_dbg(adapter
->dev
, "int: UPLD: rd_bitmap=0x%04x\n",
1225 card
->mp_rd_bitmap
);
1228 ret
= mwifiex_get_rd_port(adapter
, &port
);
1230 dev_dbg(adapter
->dev
,
1231 "info: no more rd_port available\n");
1234 len_reg_l
= RD_LEN_P0_L
+ (port
<< 1);
1235 len_reg_u
= RD_LEN_P0_U
+ (port
<< 1);
1236 rx_len
= ((u16
) card
->mp_regs
[len_reg_u
]) << 8;
1237 rx_len
|= (u16
) card
->mp_regs
[len_reg_l
];
1238 dev_dbg(adapter
->dev
, "info: RX: port=%d rx_len=%u\n",
1241 (rx_len
+ MWIFIEX_SDIO_BLOCK_SIZE
-
1242 1) / MWIFIEX_SDIO_BLOCK_SIZE
;
1243 if (rx_len
<= INTF_HEADER_LEN
||
1244 (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
) >
1245 MWIFIEX_RX_DATA_BUF_SIZE
) {
1246 dev_err(adapter
->dev
, "invalid rx_len=%d\n",
1250 rx_len
= (u16
) (rx_blocks
* MWIFIEX_SDIO_BLOCK_SIZE
);
1252 skb
= dev_alloc_skb(rx_len
);
1255 dev_err(adapter
->dev
, "%s: failed to alloc skb",
1260 skb_put(skb
, rx_len
);
1262 dev_dbg(adapter
->dev
, "info: rx_len = %d skb->len = %d\n",
1265 if (mwifiex_sdio_card_to_host_mp_aggr(adapter
, skb
,
1269 dev_err(adapter
->dev
, "card_to_host_mpa failed:"
1270 " int status=%#x\n", sdio_ireg
);
1271 if (mwifiex_read_reg(adapter
,
1272 CONFIGURATION_REG
, &cr
))
1273 dev_err(adapter
->dev
,
1274 "read CFG reg failed\n");
1276 dev_dbg(adapter
->dev
,
1277 "info: CFG reg val = %d\n", cr
);
1278 if (mwifiex_write_reg(adapter
,
1281 dev_err(adapter
->dev
,
1282 "write CFG reg failed\n");
1284 dev_dbg(adapter
->dev
, "info: write success\n");
1285 if (mwifiex_read_reg(adapter
,
1286 CONFIGURATION_REG
, &cr
))
1287 dev_err(adapter
->dev
,
1288 "read CFG reg failed\n");
1290 dev_dbg(adapter
->dev
,
1291 "info: CFG reg val =%x\n", cr
);
1301 * This function aggregates transmission buffers in driver and downloads
1302 * the aggregated packet to card.
1304 * The individual packets are aggregated by copying into an aggregation
1305 * buffer and then downloaded to the card. Previous unsent packets in the
1306 * aggregation buffer are pre-copied first before new packets are added.
1307 * Aggregation is done till there is space left in the aggregation buffer,
1308 * or till new packets are available.
1310 * The function will only download the packet to the card when aggregation
1311 * stops, otherwise it will just aggregate the packet in aggregation buffer
1314 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter
*adapter
,
1315 u8
*payload
, u32 pkt_len
, u8 port
,
1318 struct sdio_mmc_card
*card
= adapter
->card
;
1320 s32 f_send_aggr_buf
= 0;
1321 s32 f_send_cur_buf
= 0;
1322 s32 f_precopy_cur_buf
= 0;
1323 s32 f_postcopy_cur_buf
= 0;
1325 if ((!card
->mpa_tx
.enabled
) || (port
== CTRL_PORT
)) {
1326 dev_dbg(adapter
->dev
, "info: %s: tx aggregation disabled\n",
1330 goto tx_curr_single
;
1334 /* More pkt in TX queue */
1335 dev_dbg(adapter
->dev
, "info: %s: more packets in queue.\n",
1338 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1339 if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card
) &&
1340 MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
)) {
1341 f_precopy_cur_buf
= 1;
1343 if (!(card
->mp_wr_bitmap
&
1344 (1 << card
->curr_wr_port
)) ||
1345 !MP_TX_AGGR_BUF_HAS_ROOM(
1346 card
, pkt_len
+ next_pkt_len
))
1347 f_send_aggr_buf
= 1;
1349 /* No room in Aggr buf, send it */
1350 f_send_aggr_buf
= 1;
1352 if (MP_TX_AGGR_PORT_LIMIT_REACHED(card
) ||
1353 !(card
->mp_wr_bitmap
&
1354 (1 << card
->curr_wr_port
)))
1357 f_postcopy_cur_buf
= 1;
1360 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
) &&
1361 (card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1362 f_precopy_cur_buf
= 1;
1367 /* Last pkt in TX queue */
1368 dev_dbg(adapter
->dev
, "info: %s: Last packet in Tx Queue.\n",
1371 if (MP_TX_AGGR_IN_PROGRESS(card
)) {
1372 /* some packs in Aggr buf already */
1373 f_send_aggr_buf
= 1;
1375 if (MP_TX_AGGR_BUF_HAS_ROOM(card
, pkt_len
))
1376 f_precopy_cur_buf
= 1;
1378 /* No room in Aggr buf, send it */
1385 if (f_precopy_cur_buf
) {
1386 dev_dbg(adapter
->dev
, "data: %s: precopy current buffer\n",
1388 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1390 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card
) ||
1391 MP_TX_AGGR_PORT_LIMIT_REACHED(card
))
1392 /* No more pkts allowed in Aggr buf, send it */
1393 f_send_aggr_buf
= 1;
1396 if (f_send_aggr_buf
) {
1397 dev_dbg(adapter
->dev
, "data: %s: send aggr buffer: %d %d\n",
1399 card
->mpa_tx
.start_port
, card
->mpa_tx
.ports
);
1400 ret
= mwifiex_write_data_to_card(adapter
, card
->mpa_tx
.buf
,
1401 card
->mpa_tx
.buf_len
,
1402 (adapter
->ioport
| 0x1000 |
1403 (card
->mpa_tx
.ports
<< 4)) +
1404 card
->mpa_tx
.start_port
);
1406 MP_TX_AGGR_BUF_RESET(card
);
1410 if (f_send_cur_buf
) {
1411 dev_dbg(adapter
->dev
, "data: %s: send current buffer %d\n",
1413 ret
= mwifiex_write_data_to_card(adapter
, payload
, pkt_len
,
1414 adapter
->ioport
+ port
);
1417 if (f_postcopy_cur_buf
) {
1418 dev_dbg(adapter
->dev
, "data: %s: postcopy current buffer\n",
1420 MP_TX_AGGR_BUF_PUT(card
, payload
, pkt_len
, port
);
1427 * This function downloads data from driver to card.
1429 * Both commands and data packets are transferred to the card by this
1432 * This function adds the SDIO specific header to the front of the buffer
1433 * before transferring. The header contains the length of the packet and
1434 * the type. The firmware handles the packets based upon this set type.
1436 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter
*adapter
,
1437 u8 type
, struct sk_buff
*skb
,
1438 struct mwifiex_tx_param
*tx_param
)
1440 struct sdio_mmc_card
*card
= adapter
->card
;
1444 u8 port
= CTRL_PORT
;
1445 u8
*payload
= (u8
*)skb
->data
;
1446 u32 pkt_len
= skb
->len
;
1448 /* Allocate buffer and copy payload */
1449 blk_size
= MWIFIEX_SDIO_BLOCK_SIZE
;
1450 buf_block_len
= (pkt_len
+ blk_size
- 1) / blk_size
;
1451 *(u16
*) &payload
[0] = (u16
) pkt_len
;
1452 *(u16
*) &payload
[2] = type
;
1455 * This is SDIO specific header
1457 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1458 * MWIFIEX_TYPE_EVENT = 3)
1460 if (type
== MWIFIEX_TYPE_DATA
) {
1461 ret
= mwifiex_get_wr_port_data(adapter
, &port
);
1463 dev_err(adapter
->dev
, "%s: no wr_port available\n",
1468 adapter
->cmd_sent
= true;
1469 /* Type must be MWIFIEX_TYPE_CMD */
1471 if (pkt_len
<= INTF_HEADER_LEN
||
1472 pkt_len
> MWIFIEX_UPLD_SIZE
)
1473 dev_err(adapter
->dev
, "%s: payload=%p, nb=%d\n",
1474 __func__
, payload
, pkt_len
);
1477 /* Transfer data to card */
1478 pkt_len
= buf_block_len
* blk_size
;
1481 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1482 port
, tx_param
->next_pkt_len
1485 ret
= mwifiex_host_to_card_mp_aggr(adapter
, payload
, pkt_len
,
1489 if (type
== MWIFIEX_TYPE_CMD
)
1490 adapter
->cmd_sent
= false;
1491 if (type
== MWIFIEX_TYPE_DATA
)
1492 adapter
->data_sent
= false;
1494 if (type
== MWIFIEX_TYPE_DATA
) {
1495 if (!(card
->mp_wr_bitmap
& (1 << card
->curr_wr_port
)))
1496 adapter
->data_sent
= true;
1498 adapter
->data_sent
= false;
1506 * This function allocates the MPA Tx and Rx buffers.
1508 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter
*adapter
,
1509 u32 mpa_tx_buf_size
, u32 mpa_rx_buf_size
)
1511 struct sdio_mmc_card
*card
= adapter
->card
;
1514 card
->mpa_tx
.buf
= kzalloc(mpa_tx_buf_size
, GFP_KERNEL
);
1515 if (!card
->mpa_tx
.buf
) {
1516 dev_err(adapter
->dev
, "could not alloc buffer for MP-A TX\n");
1521 card
->mpa_tx
.buf_size
= mpa_tx_buf_size
;
1523 card
->mpa_rx
.buf
= kzalloc(mpa_rx_buf_size
, GFP_KERNEL
);
1524 if (!card
->mpa_rx
.buf
) {
1525 dev_err(adapter
->dev
, "could not alloc buffer for MP-A RX\n");
1530 card
->mpa_rx
.buf_size
= mpa_rx_buf_size
;
1534 kfree(card
->mpa_tx
.buf
);
1535 kfree(card
->mpa_rx
.buf
);
1542 * This function unregisters the SDIO device.
1544 * The SDIO IRQ is released, the function is disabled and driver
1545 * data is set to null.
1548 mwifiex_unregister_dev(struct mwifiex_adapter
*adapter
)
1550 struct sdio_mmc_card
*card
= adapter
->card
;
1552 if (adapter
->card
) {
1553 /* Release the SDIO IRQ */
1554 sdio_claim_host(card
->func
);
1555 sdio_release_irq(card
->func
);
1556 sdio_disable_func(card
->func
);
1557 sdio_release_host(card
->func
);
1558 sdio_set_drvdata(card
->func
, NULL
);
1563 * This function registers the SDIO device.
1565 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1567 static int mwifiex_register_dev(struct mwifiex_adapter
*adapter
)
1570 struct sdio_mmc_card
*card
= adapter
->card
;
1571 struct sdio_func
*func
= card
->func
;
1573 /* save adapter pointer in card */
1574 card
->adapter
= adapter
;
1576 sdio_claim_host(func
);
1578 /* Request the SDIO IRQ */
1579 ret
= sdio_claim_irq(func
, mwifiex_sdio_interrupt
);
1581 pr_err("claim irq failed: ret=%d\n", ret
);
1585 /* Set block size */
1586 ret
= sdio_set_block_size(card
->func
, MWIFIEX_SDIO_BLOCK_SIZE
);
1588 pr_err("cannot set SDIO block size\n");
1593 sdio_release_host(func
);
1594 sdio_set_drvdata(func
, card
);
1596 adapter
->dev
= &func
->dev
;
1598 switch (func
->device
) {
1599 case SDIO_DEVICE_ID_MARVELL_8797
:
1600 strcpy(adapter
->fw_name
, SD8797_DEFAULT_FW_NAME
);
1602 case SDIO_DEVICE_ID_MARVELL_8787
:
1604 strcpy(adapter
->fw_name
, SD8787_DEFAULT_FW_NAME
);
1611 sdio_release_irq(func
);
1613 sdio_disable_func(func
);
1614 sdio_release_host(func
);
1615 adapter
->card
= NULL
;
1621 * This function initializes the SDIO driver.
1623 * The following initializations steps are followed -
1624 * - Read the Host interrupt status register to acknowledge
1625 * the first interrupt got from bootloader
1626 * - Disable host interrupt mask register
1628 * - Initialize SDIO variables in card
1629 * - Allocate MP registers
1630 * - Allocate MPA Tx and Rx buffers
1632 static int mwifiex_init_sdio(struct mwifiex_adapter
*adapter
)
1634 struct sdio_mmc_card
*card
= adapter
->card
;
1639 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1640 * from the bootloader. If we don't do this we get a interrupt
1641 * as soon as we register the irq.
1643 mwifiex_read_reg(adapter
, HOST_INTSTATUS_REG
, &sdio_ireg
);
1645 /* Disable host interrupt mask register for SDIO */
1646 mwifiex_sdio_disable_host_int(adapter
);
1648 /* Get SDIO ioport */
1649 mwifiex_init_sdio_ioport(adapter
);
1651 /* Initialize SDIO variables in card */
1652 card
->mp_rd_bitmap
= 0;
1653 card
->mp_wr_bitmap
= 0;
1654 card
->curr_rd_port
= 1;
1655 card
->curr_wr_port
= 1;
1657 card
->mp_data_port_mask
= DATA_PORT_MASK
;
1659 card
->mpa_tx
.buf_len
= 0;
1660 card
->mpa_tx
.pkt_cnt
= 0;
1661 card
->mpa_tx
.start_port
= 0;
1663 card
->mpa_tx
.enabled
= 1;
1664 card
->mpa_tx
.pkt_aggr_limit
= SDIO_MP_AGGR_DEF_PKT_LIMIT
;
1666 card
->mpa_rx
.buf_len
= 0;
1667 card
->mpa_rx
.pkt_cnt
= 0;
1668 card
->mpa_rx
.start_port
= 0;
1670 card
->mpa_rx
.enabled
= 1;
1671 card
->mpa_rx
.pkt_aggr_limit
= SDIO_MP_AGGR_DEF_PKT_LIMIT
;
1673 /* Allocate buffers for SDIO MP-A */
1674 card
->mp_regs
= kzalloc(MAX_MP_REGS
, GFP_KERNEL
);
1675 if (!card
->mp_regs
) {
1676 dev_err(adapter
->dev
, "failed to alloc mp_regs\n");
1680 ret
= mwifiex_alloc_sdio_mpa_buffers(adapter
,
1681 SDIO_MP_TX_AGGR_DEF_BUF_SIZE
,
1682 SDIO_MP_RX_AGGR_DEF_BUF_SIZE
);
1684 dev_err(adapter
->dev
, "failed to alloc sdio mp-a buffers\n");
1685 kfree(card
->mp_regs
);
1693 * This function resets the MPA Tx and Rx buffers.
1695 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter
*adapter
)
1697 struct sdio_mmc_card
*card
= adapter
->card
;
1699 MP_TX_AGGR_BUF_RESET(card
);
1700 MP_RX_AGGR_BUF_RESET(card
);
1704 * This function cleans up the allocated card buffers.
1706 * The following are freed by this function -
1711 static void mwifiex_cleanup_sdio(struct mwifiex_adapter
*adapter
)
1713 struct sdio_mmc_card
*card
= adapter
->card
;
1715 kfree(card
->mp_regs
);
1716 kfree(card
->mpa_tx
.buf
);
1717 kfree(card
->mpa_rx
.buf
);
1721 * This function updates the MP end port in card.
1724 mwifiex_update_mp_end_port(struct mwifiex_adapter
*adapter
, u16 port
)
1726 struct sdio_mmc_card
*card
= adapter
->card
;
1729 card
->mp_end_port
= port
;
1731 card
->mp_data_port_mask
= DATA_PORT_MASK
;
1733 for (i
= 1; i
<= MAX_PORT
- card
->mp_end_port
; i
++)
1734 card
->mp_data_port_mask
&= ~(1 << (MAX_PORT
- i
));
1736 card
->curr_wr_port
= 1;
1738 dev_dbg(adapter
->dev
, "cmd: mp_end_port %d, data port mask 0x%x\n",
1739 port
, card
->mp_data_port_mask
);
1742 static struct mwifiex_if_ops sdio_ops
= {
1743 .init_if
= mwifiex_init_sdio
,
1744 .cleanup_if
= mwifiex_cleanup_sdio
,
1745 .check_fw_status
= mwifiex_check_fw_status
,
1746 .prog_fw
= mwifiex_prog_fw_w_helper
,
1747 .register_dev
= mwifiex_register_dev
,
1748 .unregister_dev
= mwifiex_unregister_dev
,
1749 .enable_int
= mwifiex_sdio_enable_host_int
,
1750 .process_int_status
= mwifiex_process_int_status
,
1751 .host_to_card
= mwifiex_sdio_host_to_card
,
1752 .wakeup
= mwifiex_pm_wakeup_card
,
1753 .wakeup_complete
= mwifiex_pm_wakeup_card_complete
,
1756 .update_mp_end_port
= mwifiex_update_mp_end_port
,
1757 .cleanup_mpa_buf
= mwifiex_cleanup_mpa_buf
,
1758 .cmdrsp_complete
= mwifiex_sdio_cmdrsp_complete
,
1759 .event_complete
= mwifiex_sdio_event_complete
,
1763 * This function initializes the SDIO driver.
1765 * This initiates the semaphore and registers the device with
1769 mwifiex_sdio_init_module(void)
1771 sema_init(&add_remove_card_sem
, 1);
1773 /* Clear the flag in case user removes the card. */
1776 return sdio_register_driver(&mwifiex_sdio
);
1780 * This function cleans up the SDIO driver.
1782 * The following major steps are followed for cleanup -
1783 * - Resume the device if its suspended
1784 * - Disconnect the device if connected
1785 * - Shutdown the firmware
1786 * - Unregister the device from SDIO bus.
1789 mwifiex_sdio_cleanup_module(void)
1791 if (!down_interruptible(&add_remove_card_sem
))
1792 up(&add_remove_card_sem
);
1794 /* Set the flag as user is removing this module. */
1797 sdio_unregister_driver(&mwifiex_sdio
);
1800 module_init(mwifiex_sdio_init_module
);
1801 module_exit(mwifiex_sdio_cleanup_module
);
1803 MODULE_AUTHOR("Marvell International Ltd.");
1804 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION
);
1805 MODULE_VERSION(SDIO_VERSION
);
1806 MODULE_LICENSE("GPL v2");
1807 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME
);
1808 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME
);