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);
54 static void mwifiex_sdio_interrupt(struct sdio_func *func);
59 * This function probes an mwifiex device and registers it. It allocates
60 * the card structure, enables SDIO function number and initiates the
61 * device registration and initialization procedure by adding a logical
65 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
68 struct sdio_mmc_card *card = NULL;
70 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
71 func->vendor, func->device, func->class, func->num);
73 card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
79 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
81 if (id->driver_data) {
82 struct mwifiex_sdio_device *data = (void *)id->driver_data;
84 card->firmware = data->firmware;
85 card->reg = data->reg;
86 card->max_ports = data->max_ports;
87 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
88 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
89 card->has_control_mask = data->has_control_mask;
92 sdio_claim_host(func);
93 ret = sdio_enable_func(func);
94 sdio_release_host(func);
97 pr_err("%s: failed to enable function\n", __func__);
102 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
104 pr_err("%s: add card failed\n", __func__);
106 sdio_claim_host(func);
107 ret = sdio_disable_func(func);
108 sdio_release_host(func);
118 * This function removes the interface and frees up the card structure.
121 mwifiex_sdio_remove(struct sdio_func *func)
123 struct sdio_mmc_card *card;
124 struct mwifiex_adapter *adapter;
125 struct mwifiex_private *priv;
128 pr_debug("info: SDIO func num=%d\n", func->num);
130 card = sdio_get_drvdata(func);
134 adapter = card->adapter;
135 if (!adapter || !adapter->priv_num)
138 /* In case driver is removed when asynchronous FW load is in progress */
139 wait_for_completion(&adapter->fw_load);
142 if (adapter->is_suspended)
143 mwifiex_sdio_resume(adapter->dev);
145 for (i = 0; i < adapter->priv_num; i++)
146 if ((GET_BSS_ROLE(adapter->priv[i]) ==
147 MWIFIEX_BSS_ROLE_STA) &&
148 adapter->priv[i]->media_connected)
149 mwifiex_deauthenticate(adapter->priv[i], NULL);
151 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
152 mwifiex_disable_auto_ds(priv);
153 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
156 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
163 * Kernel needs to suspend all functions separately. Therefore all
164 * registered functions must have drivers with suspend and resume
165 * methods. Failing that the kernel simply removes the whole card.
167 * If already not suspended, this function allocates and sends a host
168 * sleep activate request to the firmware and turns off the traffic.
170 static int mwifiex_sdio_suspend(struct device *dev)
172 struct sdio_func *func = dev_to_sdio_func(dev);
173 struct sdio_mmc_card *card;
174 struct mwifiex_adapter *adapter;
175 mmc_pm_flag_t pm_flag = 0;
179 pm_flag = sdio_get_host_pm_caps(func);
180 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
181 sdio_func_id(func), pm_flag);
182 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
183 pr_err("%s: cannot remain alive while host is"
184 " suspended\n", sdio_func_id(func));
188 card = sdio_get_drvdata(func);
189 if (!card || !card->adapter) {
190 pr_err("suspend: invalid card or adapter\n");
194 pr_err("suspend: sdio_func is not specified\n");
198 adapter = card->adapter;
200 /* Enable the Host Sleep */
201 if (!mwifiex_enable_hs(adapter)) {
202 dev_err(adapter->dev, "cmd: failed to suspend\n");
206 dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n");
207 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
209 /* Indicate device suspended */
210 adapter->is_suspended = true;
218 * Kernel needs to suspend all functions separately. Therefore all
219 * registered functions must have drivers with suspend and resume
220 * methods. Failing that the kernel simply removes the whole card.
222 * If already not resumed, this function turns on the traffic and
223 * sends a host sleep cancel request to the firmware.
225 static int mwifiex_sdio_resume(struct device *dev)
227 struct sdio_func *func = dev_to_sdio_func(dev);
228 struct sdio_mmc_card *card;
229 struct mwifiex_adapter *adapter;
230 mmc_pm_flag_t pm_flag = 0;
233 pm_flag = sdio_get_host_pm_caps(func);
234 card = sdio_get_drvdata(func);
235 if (!card || !card->adapter) {
236 pr_err("resume: invalid card or adapter\n");
240 pr_err("resume: sdio_func is not specified\n");
244 adapter = card->adapter;
246 if (!adapter->is_suspended) {
247 dev_warn(adapter->dev, "device already resumed\n");
251 adapter->is_suspended = false;
253 /* Disable Host Sleep */
254 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
260 /* Device ID for SD8786 */
261 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
262 /* Device ID for SD8787 */
263 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
264 /* Device ID for SD8797 */
265 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
266 /* Device ID for SD8897 */
267 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
270 static const struct sdio_device_id mwifiex_ids[] = {
271 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
272 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
273 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
274 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
275 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
276 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
277 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
278 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
282 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
284 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
285 .suspend = mwifiex_sdio_suspend,
286 .resume = mwifiex_sdio_resume,
289 static struct sdio_driver mwifiex_sdio = {
290 .name = "mwifiex_sdio",
291 .id_table = mwifiex_ids,
292 .probe = mwifiex_sdio_probe,
293 .remove = mwifiex_sdio_remove,
295 .owner = THIS_MODULE,
296 .pm = &mwifiex_sdio_pm_ops,
300 /* Write data into SDIO card register. Caller claims SDIO device. */
302 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
305 sdio_writeb(func, data, reg, &ret);
310 * This function writes data into SDIO card register.
313 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
315 struct sdio_mmc_card *card = adapter->card;
318 sdio_claim_host(card->func);
319 ret = mwifiex_write_reg_locked(card->func, reg, data);
320 sdio_release_host(card->func);
326 * This function reads data from SDIO card register.
329 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
331 struct sdio_mmc_card *card = adapter->card;
335 sdio_claim_host(card->func);
336 val = sdio_readb(card->func, reg, &ret);
337 sdio_release_host(card->func);
345 * This function writes multiple data into SDIO card memory.
347 * This does not work in suspended mode.
350 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
351 u8 *buffer, u32 pkt_len, u32 port)
353 struct sdio_mmc_card *card = adapter->card;
356 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
357 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
360 BLOCK_MODE) ? (pkt_len /
361 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
362 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
364 if (adapter->is_suspended) {
365 dev_err(adapter->dev,
366 "%s: not allowed while suspended\n", __func__);
370 sdio_claim_host(card->func);
372 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
374 sdio_release_host(card->func);
380 * This function reads multiple data from SDIO card memory.
382 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
383 u32 len, u32 port, u8 claim)
385 struct sdio_mmc_card *card = adapter->card;
387 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
389 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
390 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
392 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
395 sdio_claim_host(card->func);
397 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
400 sdio_release_host(card->func);
406 * This function wakes up the card.
408 * A host power up command is written to the card configuration
409 * register to wake up the card.
411 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
413 dev_dbg(adapter->dev, "event: wakeup device...\n");
415 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
419 * This function is called after the card has woken up.
421 * The card configuration register is reset.
423 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
425 dev_dbg(adapter->dev, "cmd: wakeup device completed\n");
427 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
431 * This function is used to initialize IO ports for the
432 * chipsets supporting SDIO new mode eg SD8897.
434 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
438 adapter->ioport = MEM_PORT;
440 /* enable sdio new mode */
441 if (mwifiex_read_reg(adapter, CARD_CONFIG_2_1_REG, ®))
443 if (mwifiex_write_reg(adapter, CARD_CONFIG_2_1_REG,
444 reg | CMD53_NEW_MODE))
447 /* Configure cmd port and enable reading rx length from the register */
448 if (mwifiex_read_reg(adapter, CMD_CONFIG_0, ®))
450 if (mwifiex_write_reg(adapter, CMD_CONFIG_0, reg | CMD_PORT_RD_LEN_EN))
453 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
456 if (mwifiex_read_reg(adapter, CMD_CONFIG_1, ®))
458 if (mwifiex_write_reg(adapter, CMD_CONFIG_1, reg | CMD_PORT_AUTO_EN))
464 /* This function initializes the IO ports.
466 * The following operations are performed -
467 * - Read the IO ports (0, 1 and 2)
468 * - Set host interrupt Reset-To-Read to clear
469 * - Set auto re-enable interrupt
471 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
474 struct sdio_mmc_card *card = adapter->card;
478 if (card->supports_sdio_new_mode) {
479 if (mwifiex_init_sdio_new_mode(adapter))
484 /* Read the IO port */
485 if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®))
486 adapter->ioport |= (reg & 0xff);
490 if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®))
491 adapter->ioport |= ((reg & 0xff) << 8);
495 if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®))
496 adapter->ioport |= ((reg & 0xff) << 16);
500 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
502 /* Set Host interrupt reset to read to clear */
503 if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®))
504 mwifiex_write_reg(adapter, HOST_INT_RSR_REG,
505 reg | card->reg->sdio_int_mask);
509 /* Dnld/Upld ready set to auto reset */
510 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
511 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
512 reg | AUTO_RE_ENABLE_INT);
520 * This function sends data to the card.
522 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
523 u8 *payload, u32 pkt_len, u32 port)
529 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
532 dev_err(adapter->dev, "host_to_card, write iomem"
533 " (%d) failed: %d\n", i, ret);
534 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
535 dev_err(adapter->dev, "write CFG reg failed\n");
538 if (i > MAX_WRITE_IOMEM_RETRY)
547 * This function gets the read port.
549 * If control port bit is set in MP read bitmap, the control port
550 * is returned, otherwise the current read port is returned and
551 * the value is increased (provided it does not reach the maximum
552 * limit, in which case it is reset to 1)
554 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
556 struct sdio_mmc_card *card = adapter->card;
557 const struct mwifiex_sdio_card_reg *reg = card->reg;
558 u32 rd_bitmap = card->mp_rd_bitmap;
560 dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
562 if (card->supports_sdio_new_mode) {
563 if (!(rd_bitmap & reg->data_port_mask))
566 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
570 if ((card->has_control_mask) &&
571 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
572 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
574 dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n",
575 *port, card->mp_rd_bitmap);
579 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
582 /* We are now handling the SDIO data ports */
583 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
584 *port = card->curr_rd_port;
586 if (++card->curr_rd_port == card->max_ports)
587 card->curr_rd_port = reg->start_rd_port;
589 dev_dbg(adapter->dev,
590 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
591 *port, rd_bitmap, card->mp_rd_bitmap);
597 * This function gets the write port for data.
599 * The current write port is returned if available and the value is
600 * increased (provided it does not reach the maximum limit, in which
601 * case it is reset to 1)
603 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
605 struct sdio_mmc_card *card = adapter->card;
606 const struct mwifiex_sdio_card_reg *reg = card->reg;
607 u32 wr_bitmap = card->mp_wr_bitmap;
609 dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
611 if (card->supports_sdio_new_mode &&
612 !(wr_bitmap & reg->data_port_mask)) {
613 adapter->data_sent = true;
615 } else if (!card->supports_sdio_new_mode &&
616 !(wr_bitmap & card->mp_data_port_mask)) {
620 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
621 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
622 *port = card->curr_wr_port;
623 if (((card->supports_sdio_new_mode) &&
624 (++card->curr_wr_port == card->max_ports)) ||
625 ((!card->supports_sdio_new_mode) &&
626 (++card->curr_wr_port == card->mp_end_port)))
627 card->curr_wr_port = reg->start_wr_port;
629 adapter->data_sent = true;
633 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
634 dev_err(adapter->dev,
635 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
636 *port, card->curr_wr_port, wr_bitmap,
641 dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
642 *port, wr_bitmap, card->mp_wr_bitmap);
648 * This function polls the card status.
651 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
653 struct sdio_mmc_card *card = adapter->card;
657 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
658 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
660 else if ((cs & bits) == bits)
663 usleep_range(10, 20);
666 dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries);
672 * This function reads the firmware status.
675 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
677 struct sdio_mmc_card *card = adapter->card;
678 const struct mwifiex_sdio_card_reg *reg = card->reg;
681 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
684 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
687 *dat = (u16) ((fws1 << 8) | fws0);
693 * This function disables the host interrupt.
695 * The host interrupt mask is read, the disable bit is reset and
696 * written back to the card host interrupt mask register.
698 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
700 struct sdio_mmc_card *card = adapter->card;
701 struct sdio_func *func = card->func;
703 sdio_claim_host(func);
704 mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, 0);
705 sdio_release_irq(func);
706 sdio_release_host(func);
710 * This function enables the host interrupt.
712 * The host interrupt enable mask is written to the card
713 * host interrupt mask register.
715 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
717 struct sdio_mmc_card *card = adapter->card;
718 struct sdio_func *func = card->func;
721 sdio_claim_host(func);
723 /* Request the SDIO IRQ */
724 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
726 dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret);
730 /* Simply write the mask to the register */
731 ret = mwifiex_write_reg_locked(func, HOST_INT_MASK_REG,
732 card->reg->host_int_enable);
734 dev_err(adapter->dev, "enable host interrupt failed\n");
735 sdio_release_irq(func);
739 sdio_release_host(func);
744 * This function sends a data buffer to the card.
746 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
747 u32 *type, u8 *buffer,
748 u32 npayload, u32 ioport)
754 dev_err(adapter->dev, "%s: buffer is NULL\n", __func__);
758 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
761 dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__,
766 nb = le16_to_cpu(*(__le16 *) (buffer));
768 dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n",
769 __func__, nb, npayload);
773 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
779 * This function downloads the firmware to the card.
781 * Firmware is downloaded to the card in blocks. Every block download
782 * is tested for CRC errors, and retried a number of times before
785 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
786 struct mwifiex_fw_image *fw)
788 struct sdio_mmc_card *card = adapter->card;
789 const struct mwifiex_sdio_card_reg *reg = card->reg;
791 u8 *firmware = fw->fw_buf;
792 u32 firmware_len = fw->fw_len;
797 u32 txlen, tx_blocks = 0, tries;
801 dev_err(adapter->dev,
802 "firmware image not found! Terminating download\n");
806 dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n",
809 /* Assume that the allocated buffer is 8-byte aligned */
810 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
814 /* Perform firmware data transfer */
816 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
818 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
821 dev_err(adapter->dev, "FW download with helper:"
822 " poll status timeout @ %d\n", offset);
827 if (offset >= firmware_len)
830 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
831 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
834 dev_err(adapter->dev,
835 "dev BASE0 register read failed: "
836 "base0=%#04X(%d). Terminating dnld\n",
840 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
843 dev_err(adapter->dev,
844 "dev BASE1 register read failed: "
845 "base1=%#04X(%d). Terminating dnld\n",
849 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
854 usleep_range(10, 20);
859 } else if (len > MWIFIEX_UPLD_SIZE) {
860 dev_err(adapter->dev,
861 "FW dnld failed @ %d, invalid length %d\n",
871 if (i > MAX_WRITE_IOMEM_RETRY) {
872 dev_err(adapter->dev,
873 "FW dnld failed @ %d, over max retry\n",
878 dev_err(adapter->dev, "CRC indicated by the helper:"
879 " len = 0x%04X, txlen = %d\n", len, txlen);
881 /* Setting this to 0 to resend from same offset */
886 /* Set blocksize to transfer - checking for last
888 if (firmware_len - offset < txlen)
889 txlen = firmware_len - offset;
891 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
892 / MWIFIEX_SDIO_BLOCK_SIZE;
894 /* Copy payload to buffer */
895 memmove(fwbuf, &firmware[offset], txlen);
898 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
899 MWIFIEX_SDIO_BLOCK_SIZE,
902 dev_err(adapter->dev,
903 "FW download, write iomem (%d) failed @ %d\n",
905 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
906 dev_err(adapter->dev, "write CFG reg failed\n");
915 dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n",
925 * This function checks the firmware status in card.
927 * The winner interface is also determined by this function.
929 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
932 struct sdio_mmc_card *card = adapter->card;
938 /* Wait for firmware initialization event */
939 for (tries = 0; tries < poll_num; tries++) {
940 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
943 if (firmware_stat == FIRMWARE_READY_SDIO) {
954 (adapter, card->reg->status_reg_0, &winner_status))
966 * This function reads the interrupt status from card.
968 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
970 struct sdio_mmc_card *card = adapter->card;
974 if (mwifiex_read_data_sync(adapter, card->mp_regs,
975 card->reg->max_mp_regs,
976 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
977 dev_err(adapter->dev, "read mp_regs failed\n");
981 sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG];
984 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
985 * For SDIO new mode CMD port interrupts
986 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
987 * UP_LD_CMD_PORT_HOST_INT_STATUS
988 * Clear the interrupt status register
990 dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg);
991 spin_lock_irqsave(&adapter->int_lock, flags);
992 adapter->int_status |= sdio_ireg;
993 spin_unlock_irqrestore(&adapter->int_lock, flags);
998 * SDIO interrupt handler.
1000 * This function reads the interrupt status from firmware and handles
1001 * the interrupt in current thread (ksdioirqd) right away.
1004 mwifiex_sdio_interrupt(struct sdio_func *func)
1006 struct mwifiex_adapter *adapter;
1007 struct sdio_mmc_card *card;
1009 card = sdio_get_drvdata(func);
1010 if (!card || !card->adapter) {
1011 pr_debug("int: func=%p card=%p adapter=%p\n",
1012 func, card, card ? card->adapter : NULL);
1015 adapter = card->adapter;
1017 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
1018 adapter->ps_state = PS_STATE_AWAKE;
1020 mwifiex_interrupt_status(adapter);
1021 mwifiex_main_process(adapter);
1025 * This function decodes a received packet.
1027 * Based on the type, the packet is treated as either a data, or
1028 * a command response, or an event, and the correct handler
1029 * function is invoked.
1031 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1032 struct sk_buff *skb, u32 upld_typ)
1036 skb_pull(skb, INTF_HEADER_LEN);
1039 case MWIFIEX_TYPE_DATA:
1040 dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n");
1041 mwifiex_handle_rx_packet(adapter, skb);
1044 case MWIFIEX_TYPE_CMD:
1045 dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n");
1046 /* take care of curr_cmd = NULL case */
1047 if (!adapter->curr_cmd) {
1048 cmd_buf = adapter->upld_buf;
1050 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1051 mwifiex_process_sleep_confirm_resp(adapter,
1055 memcpy(cmd_buf, skb->data,
1056 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1059 dev_kfree_skb_any(skb);
1061 adapter->cmd_resp_received = true;
1062 adapter->curr_cmd->resp_skb = skb;
1066 case MWIFIEX_TYPE_EVENT:
1067 dev_dbg(adapter->dev, "info: --- Rx: Event ---\n");
1068 adapter->event_cause = *(u32 *) skb->data;
1070 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1071 memcpy(adapter->event_body,
1072 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1075 /* event cause has been saved to adapter->event_cause */
1076 adapter->event_received = true;
1077 adapter->event_skb = skb;
1082 dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ);
1083 dev_kfree_skb_any(skb);
1091 * This function transfers received packets from card to driver, performing
1092 * aggregation if required.
1094 * For data received on control port, or if aggregation is disabled, the
1095 * received buffers are uploaded as separate packets. However, if aggregation
1096 * is enabled and required, the buffers are copied onto an aggregation buffer,
1097 * provided there is space left, processed and finally uploaded.
1099 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1100 struct sk_buff *skb, u8 port)
1102 struct sdio_mmc_card *card = adapter->card;
1103 s32 f_do_rx_aggr = 0;
1104 s32 f_do_rx_cur = 0;
1106 struct sk_buff *skb_deaggr;
1108 u32 pkt_len, pkt_type, mport;
1110 u32 rx_len = skb->len;
1112 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1113 /* Read the command Resp without aggr */
1114 dev_dbg(adapter->dev, "info: %s: no aggregation for cmd "
1115 "response\n", __func__);
1118 goto rx_curr_single;
1121 if (!card->mpa_rx.enabled) {
1122 dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n",
1126 goto rx_curr_single;
1129 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1130 card->reg->data_port_mask)) ||
1131 (card->has_control_mask && (card->mp_rd_bitmap &
1132 (~((u32) CTRL_PORT_MASK))))) {
1133 /* Some more data RX pending */
1134 dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__);
1136 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1137 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) {
1140 /* No room in Aggr buf, do rx aggr now */
1145 /* Rx aggr not in progress */
1150 /* No more data RX pending */
1151 dev_dbg(adapter->dev, "info: %s: last packet\n", __func__);
1153 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1155 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len))
1158 /* No room in Aggr buf, do rx aggr now */
1166 dev_dbg(adapter->dev, "info: current packet aggregation\n");
1167 /* Curr pkt can be aggregated */
1168 mp_rx_aggr_setup(card, skb, port);
1170 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1171 mp_rx_aggr_port_limit_reached(card)) {
1172 dev_dbg(adapter->dev, "info: %s: aggregated packet "
1173 "limit reached\n", __func__);
1174 /* No more pkts allowed in Aggr buf, rx it */
1180 /* do aggr RX now */
1181 dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n",
1182 card->mpa_rx.pkt_cnt);
1184 if (card->supports_sdio_new_mode) {
1188 for (i = 0, port_count = 0; i < card->max_ports; i++)
1189 if (card->mpa_rx.ports & BIT(i))
1192 /* Reading data from "start_port + 0" to "start_port +
1193 * port_count -1", so decrease the count by 1
1196 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1197 (port_count << 8)) + card->mpa_rx.start_port;
1199 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1200 (card->mpa_rx.ports << 4)) +
1201 card->mpa_rx.start_port;
1204 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1205 card->mpa_rx.buf_len, mport, 1))
1208 curr_ptr = card->mpa_rx.buf;
1210 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1212 /* get curr PKT len & type */
1213 pkt_len = *(u16 *) &curr_ptr[0];
1214 pkt_type = *(u16 *) &curr_ptr[2];
1216 /* copy pkt to deaggr buf */
1217 skb_deaggr = card->mpa_rx.skb_arr[pind];
1219 if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <=
1220 card->mpa_rx.len_arr[pind])) {
1222 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1224 skb_trim(skb_deaggr, pkt_len);
1226 /* Process de-aggr packet */
1227 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1230 dev_err(adapter->dev, "wrong aggr pkt:"
1231 " type=%d len=%d max_len=%d\n",
1233 card->mpa_rx.len_arr[pind]);
1234 dev_kfree_skb_any(skb_deaggr);
1236 curr_ptr += card->mpa_rx.len_arr[pind];
1238 MP_RX_AGGR_BUF_RESET(card);
1243 dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n",
1246 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1247 skb->data, skb->len,
1248 adapter->ioport + port))
1251 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1257 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1258 /* Multiport-aggregation transfer failed - cleanup */
1259 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1260 /* copy pkt to deaggr buf */
1261 skb_deaggr = card->mpa_rx.skb_arr[pind];
1262 dev_kfree_skb_any(skb_deaggr);
1264 MP_RX_AGGR_BUF_RESET(card);
1268 /* Single transfer pending. Free curr buff also */
1269 dev_kfree_skb_any(skb);
1275 * This function checks the current interrupt status.
1277 * The following interrupts are checked and handled by this function -
1280 * - Packets received
1282 * Since the firmware does not generate download ready interrupt if the
1283 * port updated is command port only, command sent interrupt checking
1284 * should be done manually, and for every SDIO interrupt.
1286 * In case of Rx packets received, the packets are uploaded from card to
1287 * host and processed accordingly.
1289 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1291 struct sdio_mmc_card *card = adapter->card;
1292 const struct mwifiex_sdio_card_reg *reg = card->reg;
1295 struct sk_buff *skb;
1296 u8 port = CTRL_PORT;
1297 u32 len_reg_l, len_reg_u;
1300 unsigned long flags;
1304 spin_lock_irqsave(&adapter->int_lock, flags);
1305 sdio_ireg = adapter->int_status;
1306 adapter->int_status = 0;
1307 spin_unlock_irqrestore(&adapter->int_lock, flags);
1312 /* Following interrupt is only for SDIO new mode */
1313 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1314 adapter->cmd_sent = false;
1316 /* Following interrupt is only for SDIO new mode */
1317 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1320 /* read the len of control packet */
1321 rx_len = card->mp_regs[CMD_RD_LEN_1] << 8;
1322 rx_len |= (u16) card->mp_regs[CMD_RD_LEN_0];
1323 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1324 if (rx_len <= INTF_HEADER_LEN ||
1325 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1326 MWIFIEX_RX_DATA_BUF_SIZE)
1328 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1330 skb = dev_alloc_skb(rx_len);
1334 skb_put(skb, rx_len);
1336 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1337 skb->len, adapter->ioport |
1339 dev_err(adapter->dev,
1340 "%s: failed to card_to_host", __func__);
1341 dev_kfree_skb_any(skb);
1345 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1346 (pkt_type != MWIFIEX_TYPE_EVENT))
1347 dev_err(adapter->dev,
1348 "%s:Received wrong packet on cmd port",
1351 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1354 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1355 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1356 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1357 if (card->supports_sdio_new_mode) {
1359 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1361 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1363 card->mp_wr_bitmap = bitmap;
1365 dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n",
1366 card->mp_wr_bitmap);
1367 if (adapter->data_sent &&
1368 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1369 dev_dbg(adapter->dev,
1370 "info: <--- Tx DONE Interrupt --->\n");
1371 adapter->data_sent = false;
1375 /* As firmware will not generate download ready interrupt if the port
1376 updated is command port only, cmd_sent should be done for any SDIO
1378 if (card->has_control_mask && adapter->cmd_sent) {
1379 /* Check if firmware has attach buffer at command port and
1380 update just that in wr_bit_map. */
1381 card->mp_wr_bitmap |=
1382 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1383 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1384 adapter->cmd_sent = false;
1387 dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
1388 adapter->cmd_sent, adapter->data_sent);
1389 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1390 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1391 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1392 if (card->supports_sdio_new_mode) {
1394 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1396 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1398 card->mp_rd_bitmap = bitmap;
1399 dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n",
1400 card->mp_rd_bitmap);
1403 ret = mwifiex_get_rd_port(adapter, &port);
1405 dev_dbg(adapter->dev,
1406 "info: no more rd_port available\n");
1409 len_reg_l = reg->rd_len_p0_l + (port << 1);
1410 len_reg_u = reg->rd_len_p0_u + (port << 1);
1411 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1412 rx_len |= (u16) card->mp_regs[len_reg_l];
1413 dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n",
1416 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1417 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1418 if (rx_len <= INTF_HEADER_LEN ||
1419 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1420 MWIFIEX_RX_DATA_BUF_SIZE) {
1421 dev_err(adapter->dev, "invalid rx_len=%d\n",
1425 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1427 skb = dev_alloc_skb(rx_len);
1430 dev_err(adapter->dev, "%s: failed to alloc skb",
1435 skb_put(skb, rx_len);
1437 dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n",
1440 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb,
1442 dev_err(adapter->dev, "card_to_host_mpa failed:"
1443 " int status=%#x\n", sdio_ireg);
1453 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1454 dev_err(adapter->dev, "read CFG reg failed\n");
1456 dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr);
1458 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1459 dev_err(adapter->dev, "write CFG reg failed\n");
1461 dev_dbg(adapter->dev, "info: write success\n");
1463 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1464 dev_err(adapter->dev, "read CFG reg failed\n");
1466 dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr);
1472 * This function aggregates transmission buffers in driver and downloads
1473 * the aggregated packet to card.
1475 * The individual packets are aggregated by copying into an aggregation
1476 * buffer and then downloaded to the card. Previous unsent packets in the
1477 * aggregation buffer are pre-copied first before new packets are added.
1478 * Aggregation is done till there is space left in the aggregation buffer,
1479 * or till new packets are available.
1481 * The function will only download the packet to the card when aggregation
1482 * stops, otherwise it will just aggregate the packet in aggregation buffer
1485 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1486 u8 *payload, u32 pkt_len, u32 port,
1489 struct sdio_mmc_card *card = adapter->card;
1491 s32 f_send_aggr_buf = 0;
1492 s32 f_send_cur_buf = 0;
1493 s32 f_precopy_cur_buf = 0;
1494 s32 f_postcopy_cur_buf = 0;
1497 if (!card->mpa_tx.enabled ||
1498 (card->has_control_mask && (port == CTRL_PORT)) ||
1499 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1500 dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n",
1504 goto tx_curr_single;
1508 /* More pkt in TX queue */
1509 dev_dbg(adapter->dev, "info: %s: more packets in queue.\n",
1512 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1513 if (!mp_tx_aggr_port_limit_reached(card) &&
1514 MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1515 f_precopy_cur_buf = 1;
1517 if (!(card->mp_wr_bitmap &
1518 (1 << card->curr_wr_port)) ||
1519 !MP_TX_AGGR_BUF_HAS_ROOM(
1520 card, pkt_len + next_pkt_len))
1521 f_send_aggr_buf = 1;
1523 /* No room in Aggr buf, send it */
1524 f_send_aggr_buf = 1;
1526 if (mp_tx_aggr_port_limit_reached(card) ||
1527 !(card->mp_wr_bitmap &
1528 (1 << card->curr_wr_port)))
1531 f_postcopy_cur_buf = 1;
1534 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1535 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1536 f_precopy_cur_buf = 1;
1541 /* Last pkt in TX queue */
1542 dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n",
1545 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1546 /* some packs in Aggr buf already */
1547 f_send_aggr_buf = 1;
1549 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1550 f_precopy_cur_buf = 1;
1552 /* No room in Aggr buf, send it */
1559 if (f_precopy_cur_buf) {
1560 dev_dbg(adapter->dev, "data: %s: precopy current buffer\n",
1562 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1564 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1565 mp_tx_aggr_port_limit_reached(card))
1566 /* No more pkts allowed in Aggr buf, send it */
1567 f_send_aggr_buf = 1;
1570 if (f_send_aggr_buf) {
1571 dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n",
1573 card->mpa_tx.start_port, card->mpa_tx.ports);
1574 if (card->supports_sdio_new_mode) {
1578 for (i = 0, port_count = 0; i < card->max_ports; i++)
1579 if (card->mpa_tx.ports & BIT(i))
1582 /* Writing data from "start_port + 0" to "start_port +
1583 * port_count -1", so decrease the count by 1
1586 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1587 (port_count << 8)) + card->mpa_tx.start_port;
1589 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1590 (card->mpa_tx.ports << 4)) +
1591 card->mpa_tx.start_port;
1594 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1595 card->mpa_tx.buf_len, mport);
1597 MP_TX_AGGR_BUF_RESET(card);
1601 if (f_send_cur_buf) {
1602 dev_dbg(adapter->dev, "data: %s: send current buffer %d\n",
1604 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1605 adapter->ioport + port);
1608 if (f_postcopy_cur_buf) {
1609 dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n",
1611 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1618 * This function downloads data from driver to card.
1620 * Both commands and data packets are transferred to the card by this
1623 * This function adds the SDIO specific header to the front of the buffer
1624 * before transferring. The header contains the length of the packet and
1625 * the type. The firmware handles the packets based upon this set type.
1627 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1628 u8 type, struct sk_buff *skb,
1629 struct mwifiex_tx_param *tx_param)
1631 struct sdio_mmc_card *card = adapter->card;
1635 u32 port = CTRL_PORT;
1636 u8 *payload = (u8 *)skb->data;
1637 u32 pkt_len = skb->len;
1639 /* Allocate buffer and copy payload */
1640 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1641 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1642 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1643 *(__le16 *)&payload[2] = cpu_to_le16(type);
1646 * This is SDIO specific header
1648 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1649 * MWIFIEX_TYPE_EVENT = 3)
1651 if (type == MWIFIEX_TYPE_DATA) {
1652 ret = mwifiex_get_wr_port_data(adapter, &port);
1654 dev_err(adapter->dev, "%s: no wr_port available\n",
1659 adapter->cmd_sent = true;
1660 /* Type must be MWIFIEX_TYPE_CMD */
1662 if (pkt_len <= INTF_HEADER_LEN ||
1663 pkt_len > MWIFIEX_UPLD_SIZE)
1664 dev_err(adapter->dev, "%s: payload=%p, nb=%d\n",
1665 __func__, payload, pkt_len);
1667 if (card->supports_sdio_new_mode)
1668 port = CMD_PORT_SLCT;
1671 /* Transfer data to card */
1672 pkt_len = buf_block_len * blk_size;
1675 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1676 port, tx_param->next_pkt_len
1679 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1683 if (type == MWIFIEX_TYPE_CMD)
1684 adapter->cmd_sent = false;
1685 if (type == MWIFIEX_TYPE_DATA)
1686 adapter->data_sent = false;
1688 if (type == MWIFIEX_TYPE_DATA) {
1689 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1690 adapter->data_sent = true;
1692 adapter->data_sent = false;
1700 * This function allocates the MPA Tx and Rx buffers.
1702 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1703 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1705 struct sdio_mmc_card *card = adapter->card;
1708 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1709 if (!card->mpa_tx.buf) {
1714 card->mpa_tx.buf_size = mpa_tx_buf_size;
1716 card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL);
1717 if (!card->mpa_rx.buf) {
1722 card->mpa_rx.buf_size = mpa_rx_buf_size;
1726 kfree(card->mpa_tx.buf);
1727 kfree(card->mpa_rx.buf);
1734 * This function unregisters the SDIO device.
1736 * The SDIO IRQ is released, the function is disabled and driver
1737 * data is set to null.
1740 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1742 struct sdio_mmc_card *card = adapter->card;
1744 if (adapter->card) {
1745 sdio_claim_host(card->func);
1746 sdio_disable_func(card->func);
1747 sdio_release_host(card->func);
1748 sdio_set_drvdata(card->func, NULL);
1753 * This function registers the SDIO device.
1755 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1757 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1760 struct sdio_mmc_card *card = adapter->card;
1761 struct sdio_func *func = card->func;
1763 /* save adapter pointer in card */
1764 card->adapter = adapter;
1766 sdio_claim_host(func);
1768 /* Set block size */
1769 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1770 sdio_release_host(func);
1772 pr_err("cannot set SDIO block size\n");
1776 sdio_set_drvdata(func, card);
1778 adapter->dev = &func->dev;
1780 strcpy(adapter->fw_name, card->firmware);
1786 * This function initializes the SDIO driver.
1788 * The following initializations steps are followed -
1789 * - Read the Host interrupt status register to acknowledge
1790 * the first interrupt got from bootloader
1791 * - Disable host interrupt mask register
1793 * - Initialize SDIO variables in card
1794 * - Allocate MP registers
1795 * - Allocate MPA Tx and Rx buffers
1797 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
1799 struct sdio_mmc_card *card = adapter->card;
1800 const struct mwifiex_sdio_card_reg *reg = card->reg;
1805 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1806 * from the bootloader. If we don't do this we get a interrupt
1807 * as soon as we register the irq.
1809 mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg);
1811 /* Get SDIO ioport */
1812 mwifiex_init_sdio_ioport(adapter);
1814 /* Initialize SDIO variables in card */
1815 card->mp_rd_bitmap = 0;
1816 card->mp_wr_bitmap = 0;
1817 card->curr_rd_port = reg->start_rd_port;
1818 card->curr_wr_port = reg->start_wr_port;
1820 card->mp_data_port_mask = reg->data_port_mask;
1822 card->mpa_tx.buf_len = 0;
1823 card->mpa_tx.pkt_cnt = 0;
1824 card->mpa_tx.start_port = 0;
1826 card->mpa_tx.enabled = 1;
1827 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1829 card->mpa_rx.buf_len = 0;
1830 card->mpa_rx.pkt_cnt = 0;
1831 card->mpa_rx.start_port = 0;
1833 card->mpa_rx.enabled = 1;
1834 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1836 /* Allocate buffers for SDIO MP-A */
1837 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
1841 /* Allocate skb pointer buffers */
1842 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
1843 card->mp_agg_pkt_limit, GFP_KERNEL);
1844 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
1845 card->mp_agg_pkt_limit, GFP_KERNEL);
1846 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
1847 SDIO_MP_TX_AGGR_DEF_BUF_SIZE,
1848 SDIO_MP_RX_AGGR_DEF_BUF_SIZE);
1850 dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n");
1851 kfree(card->mp_regs);
1859 * This function resets the MPA Tx and Rx buffers.
1861 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
1863 struct sdio_mmc_card *card = adapter->card;
1865 MP_TX_AGGR_BUF_RESET(card);
1866 MP_RX_AGGR_BUF_RESET(card);
1870 * This function cleans up the allocated card buffers.
1872 * The following are freed by this function -
1877 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
1879 struct sdio_mmc_card *card = adapter->card;
1881 kfree(card->mp_regs);
1882 kfree(card->mpa_rx.skb_arr);
1883 kfree(card->mpa_rx.len_arr);
1884 kfree(card->mpa_tx.buf);
1885 kfree(card->mpa_rx.buf);
1889 * This function updates the MP end port in card.
1892 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
1894 struct sdio_mmc_card *card = adapter->card;
1895 const struct mwifiex_sdio_card_reg *reg = card->reg;
1898 card->mp_end_port = port;
1900 card->mp_data_port_mask = reg->data_port_mask;
1902 if (reg->start_wr_port) {
1903 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
1904 card->mp_data_port_mask &=
1905 ~(1 << (card->max_ports - i));
1908 card->curr_wr_port = reg->start_wr_port;
1910 dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n",
1911 port, card->mp_data_port_mask);
1914 static struct mmc_host *reset_host;
1915 static void sdio_card_reset_worker(struct work_struct *work)
1917 struct mmc_host *target = reset_host;
1919 /* The actual reset operation must be run outside of driver thread.
1920 * This is because mmc_remove_host() will cause the device to be
1921 * instantly destroyed, and the driver then needs to end its thread,
1922 * leading to a deadlock.
1924 * We run it in a totally independent workqueue.
1927 pr_err("Resetting card...\n");
1928 mmc_remove_host(target);
1929 /* 20ms delay is based on experiment with sdhci controller */
1931 mmc_add_host(target);
1933 static DECLARE_WORK(card_reset_work, sdio_card_reset_worker);
1935 /* This function resets the card */
1936 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
1938 struct sdio_mmc_card *card = adapter->card;
1940 reset_host = card->func->card->host;
1941 schedule_work(&card_reset_work);
1944 static struct mwifiex_if_ops sdio_ops = {
1945 .init_if = mwifiex_init_sdio,
1946 .cleanup_if = mwifiex_cleanup_sdio,
1947 .check_fw_status = mwifiex_check_fw_status,
1948 .prog_fw = mwifiex_prog_fw_w_helper,
1949 .register_dev = mwifiex_register_dev,
1950 .unregister_dev = mwifiex_unregister_dev,
1951 .enable_int = mwifiex_sdio_enable_host_int,
1952 .disable_int = mwifiex_sdio_disable_host_int,
1953 .process_int_status = mwifiex_process_int_status,
1954 .host_to_card = mwifiex_sdio_host_to_card,
1955 .wakeup = mwifiex_pm_wakeup_card,
1956 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
1959 .update_mp_end_port = mwifiex_update_mp_end_port,
1960 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
1961 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
1962 .event_complete = mwifiex_sdio_event_complete,
1963 .card_reset = mwifiex_sdio_card_reset,
1967 * This function initializes the SDIO driver.
1969 * This initiates the semaphore and registers the device with
1973 mwifiex_sdio_init_module(void)
1975 sema_init(&add_remove_card_sem, 1);
1977 /* Clear the flag in case user removes the card. */
1980 return sdio_register_driver(&mwifiex_sdio);
1984 * This function cleans up the SDIO driver.
1986 * The following major steps are followed for cleanup -
1987 * - Resume the device if its suspended
1988 * - Disconnect the device if connected
1989 * - Shutdown the firmware
1990 * - Unregister the device from SDIO bus.
1993 mwifiex_sdio_cleanup_module(void)
1995 if (!down_interruptible(&add_remove_card_sem))
1996 up(&add_remove_card_sem);
1998 /* Set the flag as user is removing this module. */
2001 cancel_work_sync(&card_reset_work);
2002 sdio_unregister_driver(&mwifiex_sdio);
2005 module_init(mwifiex_sdio_init_module);
2006 module_exit(mwifiex_sdio_cleanup_module);
2008 MODULE_AUTHOR("Marvell International Ltd.");
2009 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2010 MODULE_VERSION(SDIO_VERSION);
2011 MODULE_LICENSE("GPL v2");
2012 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2013 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2014 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2015 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);