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 SD8787 */
257 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
258 /* Device ID for SD8797 */
259 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
262 static const struct sdio_device_id mwifiex_ids[] = {
263 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787)},
264 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797)},
268 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
270 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
271 .suspend = mwifiex_sdio_suspend,
272 .resume = mwifiex_sdio_resume,
275 static struct sdio_driver mwifiex_sdio = {
276 .name = "mwifiex_sdio",
277 .id_table = mwifiex_ids,
278 .probe = mwifiex_sdio_probe,
279 .remove = mwifiex_sdio_remove,
281 .owner = THIS_MODULE,
282 .pm = &mwifiex_sdio_pm_ops,
287 * This function writes data into SDIO card register.
290 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u32 data)
292 struct sdio_mmc_card *card = adapter->card;
295 sdio_claim_host(card->func);
296 sdio_writeb(card->func, (u8) data, reg, &ret);
297 sdio_release_host(card->func);
303 * This function reads data from SDIO card register.
306 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u32 *data)
308 struct sdio_mmc_card *card = adapter->card;
312 sdio_claim_host(card->func);
313 val = sdio_readb(card->func, reg, &ret);
314 sdio_release_host(card->func);
322 * This function writes multiple data into SDIO card memory.
324 * This does not work in suspended mode.
327 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
328 u8 *buffer, u32 pkt_len, u32 port)
330 struct sdio_mmc_card *card = adapter->card;
333 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
334 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
337 BLOCK_MODE) ? (pkt_len /
338 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
339 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
341 if (adapter->is_suspended) {
342 dev_err(adapter->dev,
343 "%s: not allowed while suspended\n", __func__);
347 sdio_claim_host(card->func);
349 if (!sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size))
352 sdio_release_host(card->func);
358 * This function reads multiple data from SDIO card memory.
360 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
361 u32 len, u32 port, u8 claim)
363 struct sdio_mmc_card *card = adapter->card;
365 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
367 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
368 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
370 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
373 sdio_claim_host(card->func);
375 if (!sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size))
379 sdio_release_host(card->func);
385 * This function wakes up the card.
387 * A host power up command is written to the card configuration
388 * register to wake up the card.
390 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
392 dev_dbg(adapter->dev, "event: wakeup device...\n");
394 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
398 * This function is called after the card has woken up.
400 * The card configuration register is reset.
402 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
404 dev_dbg(adapter->dev, "cmd: wakeup device completed\n");
406 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
410 * This function initializes the IO ports.
412 * The following operations are performed -
413 * - Read the IO ports (0, 1 and 2)
414 * - Set host interrupt Reset-To-Read to clear
415 * - Set auto re-enable interrupt
417 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
423 /* Read the IO port */
424 if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®))
425 adapter->ioport |= (reg & 0xff);
429 if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®))
430 adapter->ioport |= ((reg & 0xff) << 8);
434 if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®))
435 adapter->ioport |= ((reg & 0xff) << 16);
439 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
441 /* Set Host interrupt reset to read to clear */
442 if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®))
443 mwifiex_write_reg(adapter, HOST_INT_RSR_REG,
444 reg | SDIO_INT_MASK);
448 /* Dnld/Upld ready set to auto reset */
449 if (!mwifiex_read_reg(adapter, CARD_MISC_CFG_REG, ®))
450 mwifiex_write_reg(adapter, CARD_MISC_CFG_REG,
451 reg | AUTO_RE_ENABLE_INT);
459 * This function sends data to the card.
461 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
462 u8 *payload, u32 pkt_len, u32 port)
468 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
471 dev_err(adapter->dev, "host_to_card, write iomem"
472 " (%d) failed: %d\n", i, ret);
473 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
474 dev_err(adapter->dev, "write CFG reg failed\n");
477 if (i > MAX_WRITE_IOMEM_RETRY)
486 * This function gets the read port.
488 * If control port bit is set in MP read bitmap, the control port
489 * is returned, otherwise the current read port is returned and
490 * the value is increased (provided it does not reach the maximum
491 * limit, in which case it is reset to 1)
493 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
495 struct sdio_mmc_card *card = adapter->card;
496 u16 rd_bitmap = card->mp_rd_bitmap;
498 dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap);
500 if (!(rd_bitmap & (CTRL_PORT_MASK | DATA_PORT_MASK)))
503 if (card->mp_rd_bitmap & CTRL_PORT_MASK) {
504 card->mp_rd_bitmap &= (u16) (~CTRL_PORT_MASK);
506 dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%04x\n",
507 *port, card->mp_rd_bitmap);
509 if (card->mp_rd_bitmap & (1 << card->curr_rd_port)) {
510 card->mp_rd_bitmap &= (u16)
511 (~(1 << card->curr_rd_port));
512 *port = card->curr_rd_port;
514 if (++card->curr_rd_port == MAX_PORT)
515 card->curr_rd_port = 1;
520 dev_dbg(adapter->dev,
521 "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n",
522 *port, rd_bitmap, card->mp_rd_bitmap);
528 * This function gets the write port for data.
530 * The current write port is returned if available and the value is
531 * increased (provided it does not reach the maximum limit, in which
532 * case it is reset to 1)
534 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u8 *port)
536 struct sdio_mmc_card *card = adapter->card;
537 u16 wr_bitmap = card->mp_wr_bitmap;
539 dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap);
541 if (!(wr_bitmap & card->mp_data_port_mask))
544 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
545 card->mp_wr_bitmap &= (u16) (~(1 << card->curr_wr_port));
546 *port = card->curr_wr_port;
547 if (++card->curr_wr_port == card->mp_end_port)
548 card->curr_wr_port = 1;
550 adapter->data_sent = true;
554 if (*port == CTRL_PORT) {
555 dev_err(adapter->dev, "invalid data port=%d cur port=%d"
556 " mp_wr_bitmap=0x%04x -> 0x%04x\n",
557 *port, card->curr_wr_port, wr_bitmap,
562 dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n",
563 *port, wr_bitmap, card->mp_wr_bitmap);
569 * This function polls the card status.
572 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
577 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
578 if (mwifiex_read_reg(adapter, CARD_STATUS_REG, &cs))
580 else if ((cs & bits) == bits)
583 usleep_range(10, 20);
586 dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries);
592 * This function reads the firmware status.
595 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
599 if (mwifiex_read_reg(adapter, CARD_FW_STATUS0_REG, &fws0))
602 if (mwifiex_read_reg(adapter, CARD_FW_STATUS1_REG, &fws1))
605 *dat = (u16) ((fws1 << 8) | fws0);
611 * This function disables the host interrupt.
613 * The host interrupt mask is read, the disable bit is reset and
614 * written back to the card host interrupt mask register.
616 static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
620 /* Read back the host_int_mask register */
621 if (mwifiex_read_reg(adapter, HOST_INT_MASK_REG, &host_int_mask))
624 /* Update with the mask and write back to the register */
625 host_int_mask &= ~HOST_INT_DISABLE;
627 if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, host_int_mask)) {
628 dev_err(adapter->dev, "disable host interrupt failed\n");
636 * This function enables the host interrupt.
638 * The host interrupt enable mask is written to the card
639 * host interrupt mask register.
641 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
643 /* Simply write the mask to the register */
644 if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, HOST_INT_ENABLE)) {
645 dev_err(adapter->dev, "enable host interrupt failed\n");
652 * This function sends a data buffer to the card.
654 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
655 u32 *type, u8 *buffer,
656 u32 npayload, u32 ioport)
662 dev_err(adapter->dev, "%s: buffer is NULL\n", __func__);
666 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
669 dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__,
674 nb = le16_to_cpu(*(__le16 *) (buffer));
676 dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n",
677 __func__, nb, npayload);
681 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
687 * This function downloads the firmware to the card.
689 * Firmware is downloaded to the card in blocks. Every block download
690 * is tested for CRC errors, and retried a number of times before
693 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
694 struct mwifiex_fw_image *fw)
697 u8 *firmware = fw->fw_buf;
698 u32 firmware_len = fw->fw_len;
703 u32 txlen, tx_blocks = 0, tries;
707 dev_err(adapter->dev,
708 "firmware image not found! Terminating download\n");
712 dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n",
715 /* Assume that the allocated buffer is 8-byte aligned */
716 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
718 dev_err(adapter->dev,
719 "unable to alloc buffer for FW. Terminating dnld\n");
723 /* Perform firmware data transfer */
725 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
727 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
730 dev_err(adapter->dev, "FW download with helper:"
731 " poll status timeout @ %d\n", offset);
736 if (offset >= firmware_len)
739 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
740 ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_0,
743 dev_err(adapter->dev,
744 "dev BASE0 register read failed: "
745 "base0=%#04X(%d). Terminating dnld\n",
749 ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_1,
752 dev_err(adapter->dev,
753 "dev BASE1 register read failed: "
754 "base1=%#04X(%d). Terminating dnld\n",
758 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
763 usleep_range(10, 20);
768 } else if (len > MWIFIEX_UPLD_SIZE) {
769 dev_err(adapter->dev,
770 "FW dnld failed @ %d, invalid length %d\n",
780 if (i > MAX_WRITE_IOMEM_RETRY) {
781 dev_err(adapter->dev,
782 "FW dnld failed @ %d, over max retry\n",
787 dev_err(adapter->dev, "CRC indicated by the helper:"
788 " len = 0x%04X, txlen = %d\n", len, txlen);
790 /* Setting this to 0 to resend from same offset */
795 /* Set blocksize to transfer - checking for last
797 if (firmware_len - offset < txlen)
798 txlen = firmware_len - offset;
800 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
801 / MWIFIEX_SDIO_BLOCK_SIZE;
803 /* Copy payload to buffer */
804 memmove(fwbuf, &firmware[offset], txlen);
807 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
808 MWIFIEX_SDIO_BLOCK_SIZE,
811 dev_err(adapter->dev,
812 "FW download, write iomem (%d) failed @ %d\n",
814 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
815 dev_err(adapter->dev, "write CFG reg failed\n");
824 dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n",
834 * This function checks the firmware status in card.
836 * The winner interface is also determined by this function.
838 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
846 /* Wait for firmware initialization event */
847 for (tries = 0; tries < poll_num; tries++) {
848 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
851 if (firmware_stat == FIRMWARE_READY_SDIO) {
862 (adapter, CARD_FW_STATUS0_REG, &winner_status))
874 * This function reads the interrupt status from card.
876 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
878 struct sdio_mmc_card *card = adapter->card;
882 if (mwifiex_read_data_sync(adapter, card->mp_regs, MAX_MP_REGS,
883 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK,
885 dev_err(adapter->dev, "read mp_regs failed\n");
889 sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG];
892 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
893 * Clear the interrupt status register
895 dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg);
896 spin_lock_irqsave(&adapter->int_lock, flags);
897 adapter->int_status |= sdio_ireg;
898 spin_unlock_irqrestore(&adapter->int_lock, flags);
903 * SDIO interrupt handler.
905 * This function reads the interrupt status from firmware and handles
906 * the interrupt in current thread (ksdioirqd) right away.
909 mwifiex_sdio_interrupt(struct sdio_func *func)
911 struct mwifiex_adapter *adapter;
912 struct sdio_mmc_card *card;
914 card = sdio_get_drvdata(func);
915 if (!card || !card->adapter) {
916 pr_debug("int: func=%p card=%p adapter=%p\n",
917 func, card, card ? card->adapter : NULL);
920 adapter = card->adapter;
922 if (adapter->surprise_removed)
925 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
926 adapter->ps_state = PS_STATE_AWAKE;
928 mwifiex_interrupt_status(adapter);
929 mwifiex_main_process(adapter);
933 * This function decodes a received packet.
935 * Based on the type, the packet is treated as either a data, or
936 * a command response, or an event, and the correct handler
937 * function is invoked.
939 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
940 struct sk_buff *skb, u32 upld_typ)
944 skb_pull(skb, INTF_HEADER_LEN);
947 case MWIFIEX_TYPE_DATA:
948 dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n");
949 mwifiex_handle_rx_packet(adapter, skb);
952 case MWIFIEX_TYPE_CMD:
953 dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n");
954 /* take care of curr_cmd = NULL case */
955 if (!adapter->curr_cmd) {
956 cmd_buf = adapter->upld_buf;
958 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
959 mwifiex_process_sleep_confirm_resp(adapter,
963 memcpy(cmd_buf, skb->data,
964 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
967 dev_kfree_skb_any(skb);
969 adapter->cmd_resp_received = true;
970 adapter->curr_cmd->resp_skb = skb;
974 case MWIFIEX_TYPE_EVENT:
975 dev_dbg(adapter->dev, "info: --- Rx: Event ---\n");
976 adapter->event_cause = *(u32 *) skb->data;
978 skb_pull(skb, MWIFIEX_EVENT_HEADER_LEN);
980 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
981 memcpy(adapter->event_body, skb->data, skb->len);
983 /* event cause has been saved to adapter->event_cause */
984 adapter->event_received = true;
985 adapter->event_skb = skb;
990 dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ);
991 dev_kfree_skb_any(skb);
999 * This function transfers received packets from card to driver, performing
1000 * aggregation if required.
1002 * For data received on control port, or if aggregation is disabled, the
1003 * received buffers are uploaded as separate packets. However, if aggregation
1004 * is enabled and required, the buffers are copied onto an aggregation buffer,
1005 * provided there is space left, processed and finally uploaded.
1007 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1008 struct sk_buff *skb, u8 port)
1010 struct sdio_mmc_card *card = adapter->card;
1011 s32 f_do_rx_aggr = 0;
1012 s32 f_do_rx_cur = 0;
1014 struct sk_buff *skb_deaggr;
1016 u32 pkt_len, pkt_type = 0;
1018 u32 rx_len = skb->len;
1020 if (port == CTRL_PORT) {
1021 /* Read the command Resp without aggr */
1022 dev_dbg(adapter->dev, "info: %s: no aggregation for cmd "
1023 "response\n", __func__);
1026 goto rx_curr_single;
1029 if (!card->mpa_rx.enabled) {
1030 dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n",
1034 goto rx_curr_single;
1037 if (card->mp_rd_bitmap & (~((u16) CTRL_PORT_MASK))) {
1038 /* Some more data RX pending */
1039 dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__);
1041 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1042 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) {
1045 /* No room in Aggr buf, do rx aggr now */
1050 /* Rx aggr not in progress */
1055 /* No more data RX pending */
1056 dev_dbg(adapter->dev, "info: %s: last packet\n", __func__);
1058 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1060 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len))
1063 /* No room in Aggr buf, do rx aggr now */
1071 dev_dbg(adapter->dev, "info: current packet aggregation\n");
1072 /* Curr pkt can be aggregated */
1073 MP_RX_AGGR_SETUP(card, skb, port);
1075 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1076 MP_RX_AGGR_PORT_LIMIT_REACHED(card)) {
1077 dev_dbg(adapter->dev, "info: %s: aggregated packet "
1078 "limit reached\n", __func__);
1079 /* No more pkts allowed in Aggr buf, rx it */
1085 /* do aggr RX now */
1086 dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n",
1087 card->mpa_rx.pkt_cnt);
1089 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1090 card->mpa_rx.buf_len,
1091 (adapter->ioport | 0x1000 |
1092 (card->mpa_rx.ports << 4)) +
1093 card->mpa_rx.start_port, 1))
1096 curr_ptr = card->mpa_rx.buf;
1098 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1100 /* get curr PKT len & type */
1101 pkt_len = *(u16 *) &curr_ptr[0];
1102 pkt_type = *(u16 *) &curr_ptr[2];
1104 /* copy pkt to deaggr buf */
1105 skb_deaggr = card->mpa_rx.skb_arr[pind];
1107 if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <=
1108 card->mpa_rx.len_arr[pind])) {
1110 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1112 skb_trim(skb_deaggr, pkt_len);
1114 /* Process de-aggr packet */
1115 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1118 dev_err(adapter->dev, "wrong aggr pkt:"
1119 " type=%d len=%d max_len=%d\n",
1121 card->mpa_rx.len_arr[pind]);
1122 dev_kfree_skb_any(skb_deaggr);
1124 curr_ptr += card->mpa_rx.len_arr[pind];
1126 MP_RX_AGGR_BUF_RESET(card);
1131 dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n",
1134 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1135 skb->data, skb->len,
1136 adapter->ioport + port))
1139 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1145 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1146 /* Multiport-aggregation transfer failed - cleanup */
1147 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1148 /* copy pkt to deaggr buf */
1149 skb_deaggr = card->mpa_rx.skb_arr[pind];
1150 dev_kfree_skb_any(skb_deaggr);
1152 MP_RX_AGGR_BUF_RESET(card);
1156 /* Single transfer pending. Free curr buff also */
1157 dev_kfree_skb_any(skb);
1163 * This function checks the current interrupt status.
1165 * The following interrupts are checked and handled by this function -
1168 * - Packets received
1170 * Since the firmware does not generate download ready interrupt if the
1171 * port updated is command port only, command sent interrupt checking
1172 * should be done manually, and for every SDIO interrupt.
1174 * In case of Rx packets received, the packets are uploaded from card to
1175 * host and processed accordingly.
1177 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1179 struct sdio_mmc_card *card = adapter->card;
1182 struct sk_buff *skb;
1183 u8 port = CTRL_PORT;
1184 u32 len_reg_l, len_reg_u;
1187 unsigned long flags;
1189 spin_lock_irqsave(&adapter->int_lock, flags);
1190 sdio_ireg = adapter->int_status;
1191 adapter->int_status = 0;
1192 spin_unlock_irqrestore(&adapter->int_lock, flags);
1197 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1198 card->mp_wr_bitmap = ((u16) card->mp_regs[WR_BITMAP_U]) << 8;
1199 card->mp_wr_bitmap |= (u16) card->mp_regs[WR_BITMAP_L];
1200 dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%04x\n",
1201 card->mp_wr_bitmap);
1202 if (adapter->data_sent &&
1203 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1204 dev_dbg(adapter->dev,
1205 "info: <--- Tx DONE Interrupt --->\n");
1206 adapter->data_sent = false;
1210 /* As firmware will not generate download ready interrupt if the port
1211 updated is command port only, cmd_sent should be done for any SDIO
1213 if (adapter->cmd_sent) {
1214 /* Check if firmware has attach buffer at command port and
1215 update just that in wr_bit_map. */
1216 card->mp_wr_bitmap |=
1217 (u16) card->mp_regs[WR_BITMAP_L] & CTRL_PORT_MASK;
1218 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1219 adapter->cmd_sent = false;
1222 dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
1223 adapter->cmd_sent, adapter->data_sent);
1224 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1225 card->mp_rd_bitmap = ((u16) card->mp_regs[RD_BITMAP_U]) << 8;
1226 card->mp_rd_bitmap |= (u16) card->mp_regs[RD_BITMAP_L];
1227 dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%04x\n",
1228 card->mp_rd_bitmap);
1231 ret = mwifiex_get_rd_port(adapter, &port);
1233 dev_dbg(adapter->dev,
1234 "info: no more rd_port available\n");
1237 len_reg_l = RD_LEN_P0_L + (port << 1);
1238 len_reg_u = RD_LEN_P0_U + (port << 1);
1239 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1240 rx_len |= (u16) card->mp_regs[len_reg_l];
1241 dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n",
1244 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1245 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1246 if (rx_len <= INTF_HEADER_LEN ||
1247 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1248 MWIFIEX_RX_DATA_BUF_SIZE) {
1249 dev_err(adapter->dev, "invalid rx_len=%d\n",
1253 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1255 skb = dev_alloc_skb(rx_len);
1258 dev_err(adapter->dev, "%s: failed to alloc skb",
1263 skb_put(skb, rx_len);
1265 dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n",
1268 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb,
1272 dev_err(adapter->dev, "card_to_host_mpa failed:"
1273 " int status=%#x\n", sdio_ireg);
1274 if (mwifiex_read_reg(adapter,
1275 CONFIGURATION_REG, &cr))
1276 dev_err(adapter->dev,
1277 "read CFG reg failed\n");
1279 dev_dbg(adapter->dev,
1280 "info: CFG reg val = %d\n", cr);
1281 if (mwifiex_write_reg(adapter,
1284 dev_err(adapter->dev,
1285 "write CFG reg failed\n");
1287 dev_dbg(adapter->dev, "info: write success\n");
1288 if (mwifiex_read_reg(adapter,
1289 CONFIGURATION_REG, &cr))
1290 dev_err(adapter->dev,
1291 "read CFG reg failed\n");
1293 dev_dbg(adapter->dev,
1294 "info: CFG reg val =%x\n", cr);
1304 * This function aggregates transmission buffers in driver and downloads
1305 * the aggregated packet to card.
1307 * The individual packets are aggregated by copying into an aggregation
1308 * buffer and then downloaded to the card. Previous unsent packets in the
1309 * aggregation buffer are pre-copied first before new packets are added.
1310 * Aggregation is done till there is space left in the aggregation buffer,
1311 * or till new packets are available.
1313 * The function will only download the packet to the card when aggregation
1314 * stops, otherwise it will just aggregate the packet in aggregation buffer
1317 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1318 u8 *payload, u32 pkt_len, u8 port,
1321 struct sdio_mmc_card *card = adapter->card;
1323 s32 f_send_aggr_buf = 0;
1324 s32 f_send_cur_buf = 0;
1325 s32 f_precopy_cur_buf = 0;
1326 s32 f_postcopy_cur_buf = 0;
1328 if ((!card->mpa_tx.enabled) || (port == CTRL_PORT)) {
1329 dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n",
1333 goto tx_curr_single;
1337 /* More pkt in TX queue */
1338 dev_dbg(adapter->dev, "info: %s: more packets in queue.\n",
1341 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1342 if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card) &&
1343 MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1344 f_precopy_cur_buf = 1;
1346 if (!(card->mp_wr_bitmap &
1347 (1 << card->curr_wr_port)) ||
1348 !MP_TX_AGGR_BUF_HAS_ROOM(
1349 card, pkt_len + next_pkt_len))
1350 f_send_aggr_buf = 1;
1352 /* No room in Aggr buf, send it */
1353 f_send_aggr_buf = 1;
1355 if (MP_TX_AGGR_PORT_LIMIT_REACHED(card) ||
1356 !(card->mp_wr_bitmap &
1357 (1 << card->curr_wr_port)))
1360 f_postcopy_cur_buf = 1;
1363 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1364 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1365 f_precopy_cur_buf = 1;
1370 /* Last pkt in TX queue */
1371 dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n",
1374 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1375 /* some packs in Aggr buf already */
1376 f_send_aggr_buf = 1;
1378 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1379 f_precopy_cur_buf = 1;
1381 /* No room in Aggr buf, send it */
1388 if (f_precopy_cur_buf) {
1389 dev_dbg(adapter->dev, "data: %s: precopy current buffer\n",
1391 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1393 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1394 MP_TX_AGGR_PORT_LIMIT_REACHED(card))
1395 /* No more pkts allowed in Aggr buf, send it */
1396 f_send_aggr_buf = 1;
1399 if (f_send_aggr_buf) {
1400 dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n",
1402 card->mpa_tx.start_port, card->mpa_tx.ports);
1403 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1404 card->mpa_tx.buf_len,
1405 (adapter->ioport | 0x1000 |
1406 (card->mpa_tx.ports << 4)) +
1407 card->mpa_tx.start_port);
1409 MP_TX_AGGR_BUF_RESET(card);
1413 if (f_send_cur_buf) {
1414 dev_dbg(adapter->dev, "data: %s: send current buffer %d\n",
1416 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1417 adapter->ioport + port);
1420 if (f_postcopy_cur_buf) {
1421 dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n",
1423 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1430 * This function downloads data from driver to card.
1432 * Both commands and data packets are transferred to the card by this
1435 * This function adds the SDIO specific header to the front of the buffer
1436 * before transferring. The header contains the length of the packet and
1437 * the type. The firmware handles the packets based upon this set type.
1439 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1440 u8 type, struct sk_buff *skb,
1441 struct mwifiex_tx_param *tx_param)
1443 struct sdio_mmc_card *card = adapter->card;
1447 u8 port = CTRL_PORT;
1448 u8 *payload = (u8 *)skb->data;
1449 u32 pkt_len = skb->len;
1451 /* Allocate buffer and copy payload */
1452 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1453 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1454 *(u16 *) &payload[0] = (u16) pkt_len;
1455 *(u16 *) &payload[2] = type;
1458 * This is SDIO specific header
1460 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1461 * MWIFIEX_TYPE_EVENT = 3)
1463 if (type == MWIFIEX_TYPE_DATA) {
1464 ret = mwifiex_get_wr_port_data(adapter, &port);
1466 dev_err(adapter->dev, "%s: no wr_port available\n",
1471 adapter->cmd_sent = true;
1472 /* Type must be MWIFIEX_TYPE_CMD */
1474 if (pkt_len <= INTF_HEADER_LEN ||
1475 pkt_len > MWIFIEX_UPLD_SIZE)
1476 dev_err(adapter->dev, "%s: payload=%p, nb=%d\n",
1477 __func__, payload, pkt_len);
1480 /* Transfer data to card */
1481 pkt_len = buf_block_len * blk_size;
1484 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1485 port, tx_param->next_pkt_len
1488 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1492 if (type == MWIFIEX_TYPE_CMD)
1493 adapter->cmd_sent = false;
1494 if (type == MWIFIEX_TYPE_DATA)
1495 adapter->data_sent = false;
1497 if (type == MWIFIEX_TYPE_DATA) {
1498 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1499 adapter->data_sent = true;
1501 adapter->data_sent = false;
1509 * This function allocates the MPA Tx and Rx buffers.
1511 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1512 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1514 struct sdio_mmc_card *card = adapter->card;
1517 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1518 if (!card->mpa_tx.buf) {
1519 dev_err(adapter->dev, "could not alloc buffer for MP-A TX\n");
1524 card->mpa_tx.buf_size = mpa_tx_buf_size;
1526 card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL);
1527 if (!card->mpa_rx.buf) {
1528 dev_err(adapter->dev, "could not alloc buffer for MP-A RX\n");
1533 card->mpa_rx.buf_size = mpa_rx_buf_size;
1537 kfree(card->mpa_tx.buf);
1538 kfree(card->mpa_rx.buf);
1545 * This function unregisters the SDIO device.
1547 * The SDIO IRQ is released, the function is disabled and driver
1548 * data is set to null.
1551 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1553 struct sdio_mmc_card *card = adapter->card;
1555 if (adapter->card) {
1556 /* Release the SDIO IRQ */
1557 sdio_claim_host(card->func);
1558 sdio_release_irq(card->func);
1559 sdio_disable_func(card->func);
1560 sdio_release_host(card->func);
1561 sdio_set_drvdata(card->func, NULL);
1566 * This function registers the SDIO device.
1568 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1570 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1573 struct sdio_mmc_card *card = adapter->card;
1574 struct sdio_func *func = card->func;
1576 /* save adapter pointer in card */
1577 card->adapter = adapter;
1579 sdio_claim_host(func);
1581 /* Request the SDIO IRQ */
1582 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
1584 pr_err("claim irq failed: ret=%d\n", ret);
1588 /* Set block size */
1589 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1591 pr_err("cannot set SDIO block size\n");
1596 sdio_release_host(func);
1597 sdio_set_drvdata(func, card);
1599 adapter->dev = &func->dev;
1601 switch (func->device) {
1602 case SDIO_DEVICE_ID_MARVELL_8797:
1603 strcpy(adapter->fw_name, SD8797_DEFAULT_FW_NAME);
1605 case SDIO_DEVICE_ID_MARVELL_8787:
1607 strcpy(adapter->fw_name, SD8787_DEFAULT_FW_NAME);
1614 sdio_release_irq(func);
1616 sdio_disable_func(func);
1617 sdio_release_host(func);
1618 adapter->card = NULL;
1624 * This function initializes the SDIO driver.
1626 * The following initializations steps are followed -
1627 * - Read the Host interrupt status register to acknowledge
1628 * the first interrupt got from bootloader
1629 * - Disable host interrupt mask register
1631 * - Initialize SDIO variables in card
1632 * - Allocate MP registers
1633 * - Allocate MPA Tx and Rx buffers
1635 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
1637 struct sdio_mmc_card *card = adapter->card;
1642 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1643 * from the bootloader. If we don't do this we get a interrupt
1644 * as soon as we register the irq.
1646 mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg);
1648 /* Disable host interrupt mask register for SDIO */
1649 mwifiex_sdio_disable_host_int(adapter);
1651 /* Get SDIO ioport */
1652 mwifiex_init_sdio_ioport(adapter);
1654 /* Initialize SDIO variables in card */
1655 card->mp_rd_bitmap = 0;
1656 card->mp_wr_bitmap = 0;
1657 card->curr_rd_port = 1;
1658 card->curr_wr_port = 1;
1660 card->mp_data_port_mask = DATA_PORT_MASK;
1662 card->mpa_tx.buf_len = 0;
1663 card->mpa_tx.pkt_cnt = 0;
1664 card->mpa_tx.start_port = 0;
1666 card->mpa_tx.enabled = 1;
1667 card->mpa_tx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT;
1669 card->mpa_rx.buf_len = 0;
1670 card->mpa_rx.pkt_cnt = 0;
1671 card->mpa_rx.start_port = 0;
1673 card->mpa_rx.enabled = 1;
1674 card->mpa_rx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT;
1676 /* Allocate buffers for SDIO MP-A */
1677 card->mp_regs = kzalloc(MAX_MP_REGS, GFP_KERNEL);
1678 if (!card->mp_regs) {
1679 dev_err(adapter->dev, "failed to alloc mp_regs\n");
1683 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
1684 SDIO_MP_TX_AGGR_DEF_BUF_SIZE,
1685 SDIO_MP_RX_AGGR_DEF_BUF_SIZE);
1687 dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n");
1688 kfree(card->mp_regs);
1696 * This function resets the MPA Tx and Rx buffers.
1698 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
1700 struct sdio_mmc_card *card = adapter->card;
1702 MP_TX_AGGR_BUF_RESET(card);
1703 MP_RX_AGGR_BUF_RESET(card);
1707 * This function cleans up the allocated card buffers.
1709 * The following are freed by this function -
1714 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
1716 struct sdio_mmc_card *card = adapter->card;
1718 kfree(card->mp_regs);
1719 kfree(card->mpa_tx.buf);
1720 kfree(card->mpa_rx.buf);
1724 * This function updates the MP end port in card.
1727 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
1729 struct sdio_mmc_card *card = adapter->card;
1732 card->mp_end_port = port;
1734 card->mp_data_port_mask = DATA_PORT_MASK;
1736 for (i = 1; i <= MAX_PORT - card->mp_end_port; i++)
1737 card->mp_data_port_mask &= ~(1 << (MAX_PORT - i));
1739 card->curr_wr_port = 1;
1741 dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n",
1742 port, card->mp_data_port_mask);
1745 static struct mwifiex_if_ops sdio_ops = {
1746 .init_if = mwifiex_init_sdio,
1747 .cleanup_if = mwifiex_cleanup_sdio,
1748 .check_fw_status = mwifiex_check_fw_status,
1749 .prog_fw = mwifiex_prog_fw_w_helper,
1750 .register_dev = mwifiex_register_dev,
1751 .unregister_dev = mwifiex_unregister_dev,
1752 .enable_int = mwifiex_sdio_enable_host_int,
1753 .process_int_status = mwifiex_process_int_status,
1754 .host_to_card = mwifiex_sdio_host_to_card,
1755 .wakeup = mwifiex_pm_wakeup_card,
1756 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
1759 .update_mp_end_port = mwifiex_update_mp_end_port,
1760 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
1761 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
1762 .event_complete = mwifiex_sdio_event_complete,
1766 * This function initializes the SDIO driver.
1768 * This initiates the semaphore and registers the device with
1772 mwifiex_sdio_init_module(void)
1774 sema_init(&add_remove_card_sem, 1);
1776 /* Clear the flag in case user removes the card. */
1779 return sdio_register_driver(&mwifiex_sdio);
1783 * This function cleans up the SDIO driver.
1785 * The following major steps are followed for cleanup -
1786 * - Resume the device if its suspended
1787 * - Disconnect the device if connected
1788 * - Shutdown the firmware
1789 * - Unregister the device from SDIO bus.
1792 mwifiex_sdio_cleanup_module(void)
1794 if (!down_interruptible(&add_remove_card_sem))
1795 up(&add_remove_card_sem);
1797 /* Set the flag as user is removing this module. */
1800 sdio_unregister_driver(&mwifiex_sdio);
1803 module_init(mwifiex_sdio_init_module);
1804 module_exit(mwifiex_sdio_cleanup_module);
1806 MODULE_AUTHOR("Marvell International Ltd.");
1807 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
1808 MODULE_VERSION(SDIO_VERSION);
1809 MODULE_LICENSE("GPL v2");
1810 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
1811 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);