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);