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;
56 * This function probes an mwifiex device and registers it. It allocates
57 * the card structure, enables SDIO function number and initiates the
58 * device registration and initialization procedure by adding a logical
62 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
65 struct sdio_mmc_card *card = NULL;
67 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
68 func->vendor, func->device, func->class, func->num);
70 card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
76 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
78 if (id->driver_data) {
79 struct mwifiex_sdio_device *data = (void *)id->driver_data;
81 card->firmware = data->firmware;
82 card->reg = data->reg;
83 card->max_ports = data->max_ports;
84 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
85 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
86 card->has_control_mask = data->has_control_mask;
87 card->tx_buf_size = data->tx_buf_size;
90 sdio_claim_host(func);
91 ret = sdio_enable_func(func);
92 sdio_release_host(func);
95 pr_err("%s: failed to enable function\n", __func__);
100 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
102 pr_err("%s: add card failed\n", __func__);
104 sdio_claim_host(func);
105 ret = sdio_disable_func(func);
106 sdio_release_host(func);
116 * Kernel needs to suspend all functions separately. Therefore all
117 * registered functions must have drivers with suspend and resume
118 * methods. Failing that the kernel simply removes the whole card.
120 * If already not resumed, this function turns on the traffic and
121 * sends a host sleep cancel request to the firmware.
123 static int mwifiex_sdio_resume(struct device *dev)
125 struct sdio_func *func = dev_to_sdio_func(dev);
126 struct sdio_mmc_card *card;
127 struct mwifiex_adapter *adapter;
128 mmc_pm_flag_t pm_flag = 0;
131 pm_flag = sdio_get_host_pm_caps(func);
132 card = sdio_get_drvdata(func);
133 if (!card || !card->adapter) {
134 pr_err("resume: invalid card or adapter\n");
138 pr_err("resume: sdio_func is not specified\n");
142 adapter = card->adapter;
144 if (!adapter->is_suspended) {
145 dev_warn(adapter->dev, "device already resumed\n");
149 adapter->is_suspended = false;
151 /* Disable Host Sleep */
152 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
161 * This function removes the interface and frees up the card structure.
164 mwifiex_sdio_remove(struct sdio_func *func)
166 struct sdio_mmc_card *card;
167 struct mwifiex_adapter *adapter;
168 struct mwifiex_private *priv;
170 pr_debug("info: SDIO func num=%d\n", func->num);
172 card = sdio_get_drvdata(func);
176 adapter = card->adapter;
177 if (!adapter || !adapter->priv_num)
180 /* In case driver is removed when asynchronous FW load is in progress */
181 wait_for_completion(&adapter->fw_load);
184 if (adapter->is_suspended)
185 mwifiex_sdio_resume(adapter->dev);
187 mwifiex_deauthenticate_all(adapter);
189 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
190 mwifiex_disable_auto_ds(priv);
191 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
194 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
200 * Kernel needs to suspend all functions separately. Therefore all
201 * registered functions must have drivers with suspend and resume
202 * methods. Failing that the kernel simply removes the whole card.
204 * If already not suspended, this function allocates and sends a host
205 * sleep activate request to the firmware and turns off the traffic.
207 static int mwifiex_sdio_suspend(struct device *dev)
209 struct sdio_func *func = dev_to_sdio_func(dev);
210 struct sdio_mmc_card *card;
211 struct mwifiex_adapter *adapter;
212 mmc_pm_flag_t pm_flag = 0;
216 pm_flag = sdio_get_host_pm_caps(func);
217 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
218 sdio_func_id(func), pm_flag);
219 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
220 pr_err("%s: cannot remain alive while host is"
221 " suspended\n", sdio_func_id(func));
225 card = sdio_get_drvdata(func);
226 if (!card || !card->adapter) {
227 pr_err("suspend: invalid card or adapter\n");
231 pr_err("suspend: sdio_func is not specified\n");
235 adapter = card->adapter;
237 /* Enable the Host Sleep */
238 if (!mwifiex_enable_hs(adapter)) {
239 dev_err(adapter->dev, "cmd: failed to suspend\n");
240 adapter->hs_enabling = false;
244 dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n");
245 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
247 /* Indicate device suspended */
248 adapter->is_suspended = true;
249 adapter->hs_enabling = false;
254 /* Device ID for SD8786 */
255 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
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)
260 /* Device ID for SD8897 */
261 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
264 static const struct sdio_device_id mwifiex_ids[] = {
265 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
266 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
267 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
268 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
269 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
270 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
271 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
272 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
276 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
278 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
279 .suspend = mwifiex_sdio_suspend,
280 .resume = mwifiex_sdio_resume,
283 static struct sdio_driver mwifiex_sdio = {
284 .name = "mwifiex_sdio",
285 .id_table = mwifiex_ids,
286 .probe = mwifiex_sdio_probe,
287 .remove = mwifiex_sdio_remove,
289 .owner = THIS_MODULE,
290 .pm = &mwifiex_sdio_pm_ops,
294 /* Write data into SDIO card register. Caller claims SDIO device. */
296 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
299 sdio_writeb(func, data, reg, &ret);
304 * This function writes data into SDIO card register.
307 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
309 struct sdio_mmc_card *card = adapter->card;
312 sdio_claim_host(card->func);
313 ret = mwifiex_write_reg_locked(card->func, reg, data);
314 sdio_release_host(card->func);
320 * This function reads data from SDIO card register.
323 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
325 struct sdio_mmc_card *card = adapter->card;
329 sdio_claim_host(card->func);
330 val = sdio_readb(card->func, reg, &ret);
331 sdio_release_host(card->func);
339 * This function writes multiple data into SDIO card memory.
341 * This does not work in suspended mode.
344 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
345 u8 *buffer, u32 pkt_len, u32 port)
347 struct sdio_mmc_card *card = adapter->card;
350 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
351 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
354 BLOCK_MODE) ? (pkt_len /
355 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
356 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
358 if (adapter->is_suspended) {
359 dev_err(adapter->dev,
360 "%s: not allowed while suspended\n", __func__);
364 sdio_claim_host(card->func);
366 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
368 sdio_release_host(card->func);
374 * This function reads multiple data from SDIO card memory.
376 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
377 u32 len, u32 port, u8 claim)
379 struct sdio_mmc_card *card = adapter->card;
381 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
383 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
384 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
386 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
389 sdio_claim_host(card->func);
391 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
394 sdio_release_host(card->func);
400 * This function wakes up the card.
402 * A host power up command is written to the card configuration
403 * register to wake up the card.
405 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
407 dev_dbg(adapter->dev, "event: wakeup device...\n");
409 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
413 * This function is called after the card has woken up.
415 * The card configuration register is reset.
417 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
419 dev_dbg(adapter->dev, "cmd: wakeup device completed\n");
421 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
425 * This function is used to initialize IO ports for the
426 * chipsets supporting SDIO new mode eg SD8897.
428 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
432 adapter->ioport = MEM_PORT;
434 /* enable sdio new mode */
435 if (mwifiex_read_reg(adapter, CARD_CONFIG_2_1_REG, ®))
437 if (mwifiex_write_reg(adapter, CARD_CONFIG_2_1_REG,
438 reg | CMD53_NEW_MODE))
441 /* Configure cmd port and enable reading rx length from the register */
442 if (mwifiex_read_reg(adapter, CMD_CONFIG_0, ®))
444 if (mwifiex_write_reg(adapter, CMD_CONFIG_0, reg | CMD_PORT_RD_LEN_EN))
447 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
450 if (mwifiex_read_reg(adapter, CMD_CONFIG_1, ®))
452 if (mwifiex_write_reg(adapter, CMD_CONFIG_1, reg | CMD_PORT_AUTO_EN))
458 /* This function initializes the IO ports.
460 * The following operations are performed -
461 * - Read the IO ports (0, 1 and 2)
462 * - Set host interrupt Reset-To-Read to clear
463 * - Set auto re-enable interrupt
465 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
468 struct sdio_mmc_card *card = adapter->card;
472 if (card->supports_sdio_new_mode) {
473 if (mwifiex_init_sdio_new_mode(adapter))
478 /* Read the IO port */
479 if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®))
480 adapter->ioport |= (reg & 0xff);
484 if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®))
485 adapter->ioport |= ((reg & 0xff) << 8);
489 if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®))
490 adapter->ioport |= ((reg & 0xff) << 16);
494 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
496 /* Set Host interrupt reset to read to clear */
497 if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®))
498 mwifiex_write_reg(adapter, HOST_INT_RSR_REG,
499 reg | card->reg->sdio_int_mask);
503 /* Dnld/Upld ready set to auto reset */
504 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
505 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
506 reg | AUTO_RE_ENABLE_INT);
514 * This function sends data to the card.
516 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
517 u8 *payload, u32 pkt_len, u32 port)
523 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
526 dev_err(adapter->dev, "host_to_card, write iomem"
527 " (%d) failed: %d\n", i, ret);
528 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
529 dev_err(adapter->dev, "write CFG reg failed\n");
532 if (i > MAX_WRITE_IOMEM_RETRY)
541 * This function gets the read port.
543 * If control port bit is set in MP read bitmap, the control port
544 * is returned, otherwise the current read port is returned and
545 * the value is increased (provided it does not reach the maximum
546 * limit, in which case it is reset to 1)
548 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
550 struct sdio_mmc_card *card = adapter->card;
551 const struct mwifiex_sdio_card_reg *reg = card->reg;
552 u32 rd_bitmap = card->mp_rd_bitmap;
554 dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
556 if (card->supports_sdio_new_mode) {
557 if (!(rd_bitmap & reg->data_port_mask))
560 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
564 if ((card->has_control_mask) &&
565 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
566 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
568 dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n",
569 *port, card->mp_rd_bitmap);
573 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
576 /* We are now handling the SDIO data ports */
577 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
578 *port = card->curr_rd_port;
580 if (++card->curr_rd_port == card->max_ports)
581 card->curr_rd_port = reg->start_rd_port;
583 dev_dbg(adapter->dev,
584 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
585 *port, rd_bitmap, card->mp_rd_bitmap);
591 * This function gets the write port for data.
593 * The current write port is returned if available and the value is
594 * increased (provided it does not reach the maximum limit, in which
595 * case it is reset to 1)
597 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
599 struct sdio_mmc_card *card = adapter->card;
600 const struct mwifiex_sdio_card_reg *reg = card->reg;
601 u32 wr_bitmap = card->mp_wr_bitmap;
603 dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
605 if (card->supports_sdio_new_mode &&
606 !(wr_bitmap & reg->data_port_mask)) {
607 adapter->data_sent = true;
609 } else if (!card->supports_sdio_new_mode &&
610 !(wr_bitmap & card->mp_data_port_mask)) {
614 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
615 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
616 *port = card->curr_wr_port;
617 if (((card->supports_sdio_new_mode) &&
618 (++card->curr_wr_port == card->max_ports)) ||
619 ((!card->supports_sdio_new_mode) &&
620 (++card->curr_wr_port == card->mp_end_port)))
621 card->curr_wr_port = reg->start_wr_port;
623 adapter->data_sent = true;
627 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
628 dev_err(adapter->dev,
629 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
630 *port, card->curr_wr_port, wr_bitmap,
635 dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
636 *port, wr_bitmap, card->mp_wr_bitmap);
642 * This function polls the card status.
645 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
647 struct sdio_mmc_card *card = adapter->card;
651 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
652 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
654 else if ((cs & bits) == bits)
657 usleep_range(10, 20);
660 dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries);
666 * This function reads the firmware status.
669 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
671 struct sdio_mmc_card *card = adapter->card;
672 const struct mwifiex_sdio_card_reg *reg = card->reg;
675 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
678 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
681 *dat = (u16) ((fws1 << 8) | fws0);
687 * This function disables the host interrupt.
689 * The host interrupt mask is read, the disable bit is reset and
690 * written back to the card host interrupt mask register.
692 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
694 struct sdio_mmc_card *card = adapter->card;
695 struct sdio_func *func = card->func;
697 sdio_claim_host(func);
698 mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, 0);
699 sdio_release_irq(func);
700 sdio_release_host(func);
704 * This function reads the interrupt status from card.
706 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
708 struct sdio_mmc_card *card = adapter->card;
712 if (mwifiex_read_data_sync(adapter, card->mp_regs,
713 card->reg->max_mp_regs,
714 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
715 dev_err(adapter->dev, "read mp_regs failed\n");
719 sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG];
722 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
723 * For SDIO new mode CMD port interrupts
724 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
725 * UP_LD_CMD_PORT_HOST_INT_STATUS
726 * Clear the interrupt status register
728 dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg);
729 spin_lock_irqsave(&adapter->int_lock, flags);
730 adapter->int_status |= sdio_ireg;
731 spin_unlock_irqrestore(&adapter->int_lock, flags);
736 * SDIO interrupt handler.
738 * This function reads the interrupt status from firmware and handles
739 * the interrupt in current thread (ksdioirqd) right away.
742 mwifiex_sdio_interrupt(struct sdio_func *func)
744 struct mwifiex_adapter *adapter;
745 struct sdio_mmc_card *card;
747 card = sdio_get_drvdata(func);
748 if (!card || !card->adapter) {
749 pr_debug("int: func=%p card=%p adapter=%p\n",
750 func, card, card ? card->adapter : NULL);
753 adapter = card->adapter;
755 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
756 adapter->ps_state = PS_STATE_AWAKE;
758 mwifiex_interrupt_status(adapter);
759 mwifiex_main_process(adapter);
763 * This function enables the host interrupt.
765 * The host interrupt enable mask is written to the card
766 * host interrupt mask register.
768 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
770 struct sdio_mmc_card *card = adapter->card;
771 struct sdio_func *func = card->func;
774 sdio_claim_host(func);
776 /* Request the SDIO IRQ */
777 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
779 dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret);
783 /* Simply write the mask to the register */
784 ret = mwifiex_write_reg_locked(func, HOST_INT_MASK_REG,
785 card->reg->host_int_enable);
787 dev_err(adapter->dev, "enable host interrupt failed\n");
788 sdio_release_irq(func);
792 sdio_release_host(func);
797 * This function sends a data buffer to the card.
799 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
800 u32 *type, u8 *buffer,
801 u32 npayload, u32 ioport)
807 dev_err(adapter->dev, "%s: buffer is NULL\n", __func__);
811 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
814 dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__,
819 nb = le16_to_cpu(*(__le16 *) (buffer));
821 dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n",
822 __func__, nb, npayload);
826 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
832 * This function downloads the firmware to the card.
834 * Firmware is downloaded to the card in blocks. Every block download
835 * is tested for CRC errors, and retried a number of times before
838 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
839 struct mwifiex_fw_image *fw)
841 struct sdio_mmc_card *card = adapter->card;
842 const struct mwifiex_sdio_card_reg *reg = card->reg;
844 u8 *firmware = fw->fw_buf;
845 u32 firmware_len = fw->fw_len;
850 u32 txlen, tx_blocks = 0, tries;
854 dev_err(adapter->dev,
855 "firmware image not found! Terminating download\n");
859 dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n",
862 /* Assume that the allocated buffer is 8-byte aligned */
863 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
867 /* Perform firmware data transfer */
869 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
871 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
874 dev_err(adapter->dev, "FW download with helper:"
875 " poll status timeout @ %d\n", offset);
880 if (offset >= firmware_len)
883 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
884 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
887 dev_err(adapter->dev,
888 "dev BASE0 register read failed: "
889 "base0=%#04X(%d). Terminating dnld\n",
893 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
896 dev_err(adapter->dev,
897 "dev BASE1 register read failed: "
898 "base1=%#04X(%d). Terminating dnld\n",
902 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
907 usleep_range(10, 20);
912 } else if (len > MWIFIEX_UPLD_SIZE) {
913 dev_err(adapter->dev,
914 "FW dnld failed @ %d, invalid length %d\n",
924 if (i > MAX_WRITE_IOMEM_RETRY) {
925 dev_err(adapter->dev,
926 "FW dnld failed @ %d, over max retry\n",
931 dev_err(adapter->dev, "CRC indicated by the helper:"
932 " len = 0x%04X, txlen = %d\n", len, txlen);
934 /* Setting this to 0 to resend from same offset */
939 /* Set blocksize to transfer - checking for last
941 if (firmware_len - offset < txlen)
942 txlen = firmware_len - offset;
944 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
945 / MWIFIEX_SDIO_BLOCK_SIZE;
947 /* Copy payload to buffer */
948 memmove(fwbuf, &firmware[offset], txlen);
951 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
952 MWIFIEX_SDIO_BLOCK_SIZE,
955 dev_err(adapter->dev,
956 "FW download, write iomem (%d) failed @ %d\n",
958 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
959 dev_err(adapter->dev, "write CFG reg failed\n");
968 dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n",
978 * This function checks the firmware status in card.
980 * The winner interface is also determined by this function.
982 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
985 struct sdio_mmc_card *card = adapter->card;
991 /* Wait for firmware initialization event */
992 for (tries = 0; tries < poll_num; tries++) {
993 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
996 if (firmware_stat == FIRMWARE_READY_SDIO) {
1006 if (mwifiex_read_reg
1007 (adapter, card->reg->status_reg_0, &winner_status))
1011 adapter->winner = 0;
1013 adapter->winner = 1;
1019 * This function decodes a received packet.
1021 * Based on the type, the packet is treated as either a data, or
1022 * a command response, or an event, and the correct handler
1023 * function is invoked.
1025 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1026 struct sk_buff *skb, u32 upld_typ)
1029 __le16 *curr_ptr = (__le16 *)skb->data;
1030 u16 pkt_len = le16_to_cpu(*curr_ptr);
1032 skb_trim(skb, pkt_len);
1033 skb_pull(skb, INTF_HEADER_LEN);
1036 case MWIFIEX_TYPE_DATA:
1037 dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n");
1038 mwifiex_handle_rx_packet(adapter, skb);
1041 case MWIFIEX_TYPE_CMD:
1042 dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n");
1043 /* take care of curr_cmd = NULL case */
1044 if (!adapter->curr_cmd) {
1045 cmd_buf = adapter->upld_buf;
1047 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1048 mwifiex_process_sleep_confirm_resp(adapter,
1052 memcpy(cmd_buf, skb->data,
1053 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1056 dev_kfree_skb_any(skb);
1058 adapter->cmd_resp_received = true;
1059 adapter->curr_cmd->resp_skb = skb;
1063 case MWIFIEX_TYPE_EVENT:
1064 dev_dbg(adapter->dev, "info: --- Rx: Event ---\n");
1065 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
1067 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1068 memcpy(adapter->event_body,
1069 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1072 /* event cause has been saved to adapter->event_cause */
1073 adapter->event_received = true;
1074 adapter->event_skb = skb;
1079 dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ);
1080 dev_kfree_skb_any(skb);
1088 * This function transfers received packets from card to driver, performing
1089 * aggregation if required.
1091 * For data received on control port, or if aggregation is disabled, the
1092 * received buffers are uploaded as separate packets. However, if aggregation
1093 * is enabled and required, the buffers are copied onto an aggregation buffer,
1094 * provided there is space left, processed and finally uploaded.
1096 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1097 struct sk_buff *skb, u8 port)
1099 struct sdio_mmc_card *card = adapter->card;
1100 s32 f_do_rx_aggr = 0;
1101 s32 f_do_rx_cur = 0;
1103 struct sk_buff *skb_deaggr;
1105 u32 pkt_len, pkt_type, mport;
1107 u32 rx_len = skb->len;
1109 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1110 /* Read the command Resp without aggr */
1111 dev_dbg(adapter->dev, "info: %s: no aggregation for cmd "
1112 "response\n", __func__);
1115 goto rx_curr_single;
1118 if (!card->mpa_rx.enabled) {
1119 dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n",
1123 goto rx_curr_single;
1126 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1127 card->reg->data_port_mask)) ||
1128 (card->has_control_mask && (card->mp_rd_bitmap &
1129 (~((u32) CTRL_PORT_MASK))))) {
1130 /* Some more data RX pending */
1131 dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__);
1133 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1134 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) {
1137 /* No room in Aggr buf, do rx aggr now */
1142 /* Rx aggr not in progress */
1147 /* No more data RX pending */
1148 dev_dbg(adapter->dev, "info: %s: last packet\n", __func__);
1150 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1152 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len))
1155 /* No room in Aggr buf, do rx aggr now */
1163 dev_dbg(adapter->dev, "info: current packet aggregation\n");
1164 /* Curr pkt can be aggregated */
1165 mp_rx_aggr_setup(card, skb, port);
1167 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1168 mp_rx_aggr_port_limit_reached(card)) {
1169 dev_dbg(adapter->dev, "info: %s: aggregated packet "
1170 "limit reached\n", __func__);
1171 /* No more pkts allowed in Aggr buf, rx it */
1177 /* do aggr RX now */
1178 dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n",
1179 card->mpa_rx.pkt_cnt);
1181 if (card->supports_sdio_new_mode) {
1185 for (i = 0, port_count = 0; i < card->max_ports; i++)
1186 if (card->mpa_rx.ports & BIT(i))
1189 /* Reading data from "start_port + 0" to "start_port +
1190 * port_count -1", so decrease the count by 1
1193 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1194 (port_count << 8)) + card->mpa_rx.start_port;
1196 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1197 (card->mpa_rx.ports << 4)) +
1198 card->mpa_rx.start_port;
1201 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1202 card->mpa_rx.buf_len, mport, 1))
1205 curr_ptr = card->mpa_rx.buf;
1207 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1209 /* get curr PKT len & type */
1210 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1211 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
1213 /* copy pkt to deaggr buf */
1214 skb_deaggr = card->mpa_rx.skb_arr[pind];
1216 if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <=
1217 card->mpa_rx.len_arr[pind])) {
1219 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1221 skb_trim(skb_deaggr, pkt_len);
1223 /* Process de-aggr packet */
1224 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1227 dev_err(adapter->dev, "wrong aggr pkt:"
1228 " type=%d len=%d max_len=%d\n",
1230 card->mpa_rx.len_arr[pind]);
1231 dev_kfree_skb_any(skb_deaggr);
1233 curr_ptr += card->mpa_rx.len_arr[pind];
1235 MP_RX_AGGR_BUF_RESET(card);
1240 dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n",
1243 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1244 skb->data, skb->len,
1245 adapter->ioport + port))
1248 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1254 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1255 /* Multiport-aggregation transfer failed - cleanup */
1256 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1257 /* copy pkt to deaggr buf */
1258 skb_deaggr = card->mpa_rx.skb_arr[pind];
1259 dev_kfree_skb_any(skb_deaggr);
1261 MP_RX_AGGR_BUF_RESET(card);
1265 /* Single transfer pending. Free curr buff also */
1266 dev_kfree_skb_any(skb);
1272 * This function checks the current interrupt status.
1274 * The following interrupts are checked and handled by this function -
1277 * - Packets received
1279 * Since the firmware does not generate download ready interrupt if the
1280 * port updated is command port only, command sent interrupt checking
1281 * should be done manually, and for every SDIO interrupt.
1283 * In case of Rx packets received, the packets are uploaded from card to
1284 * host and processed accordingly.
1286 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1288 struct sdio_mmc_card *card = adapter->card;
1289 const struct mwifiex_sdio_card_reg *reg = card->reg;
1292 struct sk_buff *skb;
1293 u8 port = CTRL_PORT;
1294 u32 len_reg_l, len_reg_u;
1297 unsigned long flags;
1301 spin_lock_irqsave(&adapter->int_lock, flags);
1302 sdio_ireg = adapter->int_status;
1303 adapter->int_status = 0;
1304 spin_unlock_irqrestore(&adapter->int_lock, flags);
1309 /* Following interrupt is only for SDIO new mode */
1310 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1311 adapter->cmd_sent = false;
1313 /* Following interrupt is only for SDIO new mode */
1314 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1317 /* read the len of control packet */
1318 rx_len = card->mp_regs[CMD_RD_LEN_1] << 8;
1319 rx_len |= (u16) card->mp_regs[CMD_RD_LEN_0];
1320 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1321 if (rx_len <= INTF_HEADER_LEN ||
1322 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1323 MWIFIEX_RX_DATA_BUF_SIZE)
1325 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1327 skb = dev_alloc_skb(rx_len);
1331 skb_put(skb, rx_len);
1333 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1334 skb->len, adapter->ioport |
1336 dev_err(adapter->dev,
1337 "%s: failed to card_to_host", __func__);
1338 dev_kfree_skb_any(skb);
1342 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1343 (pkt_type != MWIFIEX_TYPE_EVENT))
1344 dev_err(adapter->dev,
1345 "%s:Received wrong packet on cmd port",
1348 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1351 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1352 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1353 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1354 if (card->supports_sdio_new_mode) {
1356 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1358 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1360 card->mp_wr_bitmap = bitmap;
1362 dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n",
1363 card->mp_wr_bitmap);
1364 if (adapter->data_sent &&
1365 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1366 dev_dbg(adapter->dev,
1367 "info: <--- Tx DONE Interrupt --->\n");
1368 adapter->data_sent = false;
1372 /* As firmware will not generate download ready interrupt if the port
1373 updated is command port only, cmd_sent should be done for any SDIO
1375 if (card->has_control_mask && adapter->cmd_sent) {
1376 /* Check if firmware has attach buffer at command port and
1377 update just that in wr_bit_map. */
1378 card->mp_wr_bitmap |=
1379 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1380 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1381 adapter->cmd_sent = false;
1384 dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
1385 adapter->cmd_sent, adapter->data_sent);
1386 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1387 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1388 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1389 if (card->supports_sdio_new_mode) {
1391 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1393 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1395 card->mp_rd_bitmap = bitmap;
1396 dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n",
1397 card->mp_rd_bitmap);
1400 ret = mwifiex_get_rd_port(adapter, &port);
1402 dev_dbg(adapter->dev,
1403 "info: no more rd_port available\n");
1406 len_reg_l = reg->rd_len_p0_l + (port << 1);
1407 len_reg_u = reg->rd_len_p0_u + (port << 1);
1408 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1409 rx_len |= (u16) card->mp_regs[len_reg_l];
1410 dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n",
1413 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1414 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1415 if (rx_len <= INTF_HEADER_LEN ||
1416 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1417 MWIFIEX_RX_DATA_BUF_SIZE) {
1418 dev_err(adapter->dev, "invalid rx_len=%d\n",
1422 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1424 skb = dev_alloc_skb(rx_len);
1427 dev_err(adapter->dev, "%s: failed to alloc skb",
1432 skb_put(skb, rx_len);
1434 dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n",
1437 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb,
1439 dev_err(adapter->dev, "card_to_host_mpa failed:"
1440 " int status=%#x\n", sdio_ireg);
1450 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1451 dev_err(adapter->dev, "read CFG reg failed\n");
1453 dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr);
1455 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1456 dev_err(adapter->dev, "write CFG reg failed\n");
1458 dev_dbg(adapter->dev, "info: write success\n");
1460 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1461 dev_err(adapter->dev, "read CFG reg failed\n");
1463 dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr);
1469 * This function aggregates transmission buffers in driver and downloads
1470 * the aggregated packet to card.
1472 * The individual packets are aggregated by copying into an aggregation
1473 * buffer and then downloaded to the card. Previous unsent packets in the
1474 * aggregation buffer are pre-copied first before new packets are added.
1475 * Aggregation is done till there is space left in the aggregation buffer,
1476 * or till new packets are available.
1478 * The function will only download the packet to the card when aggregation
1479 * stops, otherwise it will just aggregate the packet in aggregation buffer
1482 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1483 u8 *payload, u32 pkt_len, u32 port,
1486 struct sdio_mmc_card *card = adapter->card;
1488 s32 f_send_aggr_buf = 0;
1489 s32 f_send_cur_buf = 0;
1490 s32 f_precopy_cur_buf = 0;
1491 s32 f_postcopy_cur_buf = 0;
1494 if (!card->mpa_tx.enabled ||
1495 (card->has_control_mask && (port == CTRL_PORT)) ||
1496 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1497 dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n",
1501 goto tx_curr_single;
1505 /* More pkt in TX queue */
1506 dev_dbg(adapter->dev, "info: %s: more packets in queue.\n",
1509 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1510 if (!mp_tx_aggr_port_limit_reached(card) &&
1511 MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1512 f_precopy_cur_buf = 1;
1514 if (!(card->mp_wr_bitmap &
1515 (1 << card->curr_wr_port)) ||
1516 !MP_TX_AGGR_BUF_HAS_ROOM(
1517 card, pkt_len + next_pkt_len))
1518 f_send_aggr_buf = 1;
1520 /* No room in Aggr buf, send it */
1521 f_send_aggr_buf = 1;
1523 if (mp_tx_aggr_port_limit_reached(card) ||
1524 !(card->mp_wr_bitmap &
1525 (1 << card->curr_wr_port)))
1528 f_postcopy_cur_buf = 1;
1531 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1532 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1533 f_precopy_cur_buf = 1;
1538 /* Last pkt in TX queue */
1539 dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n",
1542 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1543 /* some packs in Aggr buf already */
1544 f_send_aggr_buf = 1;
1546 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1547 f_precopy_cur_buf = 1;
1549 /* No room in Aggr buf, send it */
1556 if (f_precopy_cur_buf) {
1557 dev_dbg(adapter->dev, "data: %s: precopy current buffer\n",
1559 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1561 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1562 mp_tx_aggr_port_limit_reached(card))
1563 /* No more pkts allowed in Aggr buf, send it */
1564 f_send_aggr_buf = 1;
1567 if (f_send_aggr_buf) {
1568 dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n",
1570 card->mpa_tx.start_port, card->mpa_tx.ports);
1571 if (card->supports_sdio_new_mode) {
1575 for (i = 0, port_count = 0; i < card->max_ports; i++)
1576 if (card->mpa_tx.ports & BIT(i))
1579 /* Writing data from "start_port + 0" to "start_port +
1580 * port_count -1", so decrease the count by 1
1583 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1584 (port_count << 8)) + card->mpa_tx.start_port;
1586 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1587 (card->mpa_tx.ports << 4)) +
1588 card->mpa_tx.start_port;
1591 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1592 card->mpa_tx.buf_len, mport);
1594 MP_TX_AGGR_BUF_RESET(card);
1598 if (f_send_cur_buf) {
1599 dev_dbg(adapter->dev, "data: %s: send current buffer %d\n",
1601 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1602 adapter->ioport + port);
1605 if (f_postcopy_cur_buf) {
1606 dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n",
1608 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1615 * This function downloads data from driver to card.
1617 * Both commands and data packets are transferred to the card by this
1620 * This function adds the SDIO specific header to the front of the buffer
1621 * before transferring. The header contains the length of the packet and
1622 * the type. The firmware handles the packets based upon this set type.
1624 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1625 u8 type, struct sk_buff *skb,
1626 struct mwifiex_tx_param *tx_param)
1628 struct sdio_mmc_card *card = adapter->card;
1632 u32 port = CTRL_PORT;
1633 u8 *payload = (u8 *)skb->data;
1634 u32 pkt_len = skb->len;
1636 /* Allocate buffer and copy payload */
1637 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1638 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1639 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1640 *(__le16 *)&payload[2] = cpu_to_le16(type);
1643 * This is SDIO specific header
1645 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1646 * MWIFIEX_TYPE_EVENT = 3)
1648 if (type == MWIFIEX_TYPE_DATA) {
1649 ret = mwifiex_get_wr_port_data(adapter, &port);
1651 dev_err(adapter->dev, "%s: no wr_port available\n",
1656 adapter->cmd_sent = true;
1657 /* Type must be MWIFIEX_TYPE_CMD */
1659 if (pkt_len <= INTF_HEADER_LEN ||
1660 pkt_len > MWIFIEX_UPLD_SIZE)
1661 dev_err(adapter->dev, "%s: payload=%p, nb=%d\n",
1662 __func__, payload, pkt_len);
1664 if (card->supports_sdio_new_mode)
1665 port = CMD_PORT_SLCT;
1668 /* Transfer data to card */
1669 pkt_len = buf_block_len * blk_size;
1672 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1673 port, tx_param->next_pkt_len
1676 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1680 if (type == MWIFIEX_TYPE_CMD)
1681 adapter->cmd_sent = false;
1682 if (type == MWIFIEX_TYPE_DATA)
1683 adapter->data_sent = false;
1685 if (type == MWIFIEX_TYPE_DATA) {
1686 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1687 adapter->data_sent = true;
1689 adapter->data_sent = false;
1697 * This function allocates the MPA Tx and Rx buffers.
1699 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1700 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1702 struct sdio_mmc_card *card = adapter->card;
1705 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1706 if (!card->mpa_tx.buf) {
1711 card->mpa_tx.buf_size = mpa_tx_buf_size;
1713 card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL);
1714 if (!card->mpa_rx.buf) {
1719 card->mpa_rx.buf_size = mpa_rx_buf_size;
1723 kfree(card->mpa_tx.buf);
1724 kfree(card->mpa_rx.buf);
1731 * This function unregisters the SDIO device.
1733 * The SDIO IRQ is released, the function is disabled and driver
1734 * data is set to null.
1737 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1739 struct sdio_mmc_card *card = adapter->card;
1741 if (adapter->card) {
1742 sdio_claim_host(card->func);
1743 sdio_disable_func(card->func);
1744 sdio_release_host(card->func);
1749 * This function registers the SDIO device.
1751 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1753 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1756 struct sdio_mmc_card *card = adapter->card;
1757 struct sdio_func *func = card->func;
1759 /* save adapter pointer in card */
1760 card->adapter = adapter;
1761 adapter->tx_buf_size = card->tx_buf_size;
1763 sdio_claim_host(func);
1765 /* Set block size */
1766 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1767 sdio_release_host(func);
1769 pr_err("cannot set SDIO block size\n");
1774 adapter->dev = &func->dev;
1776 strcpy(adapter->fw_name, card->firmware);
1782 * This function initializes the SDIO driver.
1784 * The following initializations steps are followed -
1785 * - Read the Host interrupt status register to acknowledge
1786 * the first interrupt got from bootloader
1787 * - Disable host interrupt mask register
1789 * - Initialize SDIO variables in card
1790 * - Allocate MP registers
1791 * - Allocate MPA Tx and Rx buffers
1793 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
1795 struct sdio_mmc_card *card = adapter->card;
1796 const struct mwifiex_sdio_card_reg *reg = card->reg;
1800 sdio_set_drvdata(card->func, card);
1803 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1804 * from the bootloader. If we don't do this we get a interrupt
1805 * as soon as we register the irq.
1807 mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg);
1809 /* Get SDIO ioport */
1810 mwifiex_init_sdio_ioport(adapter);
1812 /* Initialize SDIO variables in card */
1813 card->mp_rd_bitmap = 0;
1814 card->mp_wr_bitmap = 0;
1815 card->curr_rd_port = reg->start_rd_port;
1816 card->curr_wr_port = reg->start_wr_port;
1818 card->mp_data_port_mask = reg->data_port_mask;
1820 card->mpa_tx.buf_len = 0;
1821 card->mpa_tx.pkt_cnt = 0;
1822 card->mpa_tx.start_port = 0;
1824 card->mpa_tx.enabled = 1;
1825 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1827 card->mpa_rx.buf_len = 0;
1828 card->mpa_rx.pkt_cnt = 0;
1829 card->mpa_rx.start_port = 0;
1831 card->mpa_rx.enabled = 1;
1832 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1834 /* Allocate buffers for SDIO MP-A */
1835 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
1839 /* Allocate skb pointer buffers */
1840 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
1841 card->mp_agg_pkt_limit, GFP_KERNEL);
1842 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
1843 card->mp_agg_pkt_limit, GFP_KERNEL);
1844 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
1845 SDIO_MP_TX_AGGR_DEF_BUF_SIZE,
1846 SDIO_MP_RX_AGGR_DEF_BUF_SIZE);
1848 dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n");
1849 kfree(card->mp_regs);
1857 * This function resets the MPA Tx and Rx buffers.
1859 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
1861 struct sdio_mmc_card *card = adapter->card;
1863 MP_TX_AGGR_BUF_RESET(card);
1864 MP_RX_AGGR_BUF_RESET(card);
1868 * This function cleans up the allocated card buffers.
1870 * The following are freed by this function -
1875 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
1877 struct sdio_mmc_card *card = adapter->card;
1879 kfree(card->mp_regs);
1880 kfree(card->mpa_rx.skb_arr);
1881 kfree(card->mpa_rx.len_arr);
1882 kfree(card->mpa_tx.buf);
1883 kfree(card->mpa_rx.buf);
1884 sdio_set_drvdata(card->func, NULL);
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);