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;
89 sdio_claim_host(func);
90 ret = sdio_enable_func(func);
91 sdio_release_host(func);
94 pr_err("%s: failed to enable function\n", __func__);
99 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
101 pr_err("%s: add card failed\n", __func__);
103 sdio_claim_host(func);
104 ret = sdio_disable_func(func);
105 sdio_release_host(func);
115 * Kernel needs to suspend all functions separately. Therefore all
116 * registered functions must have drivers with suspend and resume
117 * methods. Failing that the kernel simply removes the whole card.
119 * If already not resumed, this function turns on the traffic and
120 * sends a host sleep cancel request to the firmware.
122 static int mwifiex_sdio_resume(struct device *dev)
124 struct sdio_func *func = dev_to_sdio_func(dev);
125 struct sdio_mmc_card *card;
126 struct mwifiex_adapter *adapter;
127 mmc_pm_flag_t pm_flag = 0;
130 pm_flag = sdio_get_host_pm_caps(func);
131 card = sdio_get_drvdata(func);
132 if (!card || !card->adapter) {
133 pr_err("resume: invalid card or adapter\n");
137 pr_err("resume: sdio_func is not specified\n");
141 adapter = card->adapter;
143 if (!adapter->is_suspended) {
144 dev_warn(adapter->dev, "device already resumed\n");
148 adapter->is_suspended = false;
150 /* Disable Host Sleep */
151 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
160 * This function removes the interface and frees up the card structure.
163 mwifiex_sdio_remove(struct sdio_func *func)
165 struct sdio_mmc_card *card;
166 struct mwifiex_adapter *adapter;
167 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 for (i = 0; i < adapter->priv_num; i++)
188 if ((GET_BSS_ROLE(adapter->priv[i]) ==
189 MWIFIEX_BSS_ROLE_STA) &&
190 adapter->priv[i]->media_connected)
191 mwifiex_deauthenticate(adapter->priv[i], NULL);
193 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
194 mwifiex_disable_auto_ds(priv);
195 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
198 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
205 * Kernel needs to suspend all functions separately. Therefore all
206 * registered functions must have drivers with suspend and resume
207 * methods. Failing that the kernel simply removes the whole card.
209 * If already not suspended, this function allocates and sends a host
210 * sleep activate request to the firmware and turns off the traffic.
212 static int mwifiex_sdio_suspend(struct device *dev)
214 struct sdio_func *func = dev_to_sdio_func(dev);
215 struct sdio_mmc_card *card;
216 struct mwifiex_adapter *adapter;
217 mmc_pm_flag_t pm_flag = 0;
221 pm_flag = sdio_get_host_pm_caps(func);
222 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
223 sdio_func_id(func), pm_flag);
224 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
225 pr_err("%s: cannot remain alive while host is"
226 " suspended\n", sdio_func_id(func));
230 card = sdio_get_drvdata(func);
231 if (!card || !card->adapter) {
232 pr_err("suspend: invalid card or adapter\n");
236 pr_err("suspend: sdio_func is not specified\n");
240 adapter = card->adapter;
242 /* Enable the Host Sleep */
243 if (!mwifiex_enable_hs(adapter)) {
244 dev_err(adapter->dev, "cmd: failed to suspend\n");
248 dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n");
249 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
251 /* Indicate device suspended */
252 adapter->is_suspended = true;
257 /* Device ID for SD8786 */
258 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
259 /* Device ID for SD8787 */
260 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
261 /* Device ID for SD8797 */
262 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
263 /* Device ID for SD8897 */
264 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
267 static const struct sdio_device_id mwifiex_ids[] = {
268 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
269 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
270 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
271 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
272 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
273 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
274 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
275 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
279 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
281 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
282 .suspend = mwifiex_sdio_suspend,
283 .resume = mwifiex_sdio_resume,
286 static struct sdio_driver mwifiex_sdio = {
287 .name = "mwifiex_sdio",
288 .id_table = mwifiex_ids,
289 .probe = mwifiex_sdio_probe,
290 .remove = mwifiex_sdio_remove,
292 .owner = THIS_MODULE,
293 .pm = &mwifiex_sdio_pm_ops,
297 /* Write data into SDIO card register. Caller claims SDIO device. */
299 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
302 sdio_writeb(func, data, reg, &ret);
307 * This function writes data into SDIO card register.
310 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
312 struct sdio_mmc_card *card = adapter->card;
315 sdio_claim_host(card->func);
316 ret = mwifiex_write_reg_locked(card->func, reg, data);
317 sdio_release_host(card->func);
323 * This function reads data from SDIO card register.
326 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
328 struct sdio_mmc_card *card = adapter->card;
332 sdio_claim_host(card->func);
333 val = sdio_readb(card->func, reg, &ret);
334 sdio_release_host(card->func);
342 * This function writes multiple data into SDIO card memory.
344 * This does not work in suspended mode.
347 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
348 u8 *buffer, u32 pkt_len, u32 port)
350 struct sdio_mmc_card *card = adapter->card;
353 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
354 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
357 BLOCK_MODE) ? (pkt_len /
358 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
359 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
361 if (adapter->is_suspended) {
362 dev_err(adapter->dev,
363 "%s: not allowed while suspended\n", __func__);
367 sdio_claim_host(card->func);
369 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
371 sdio_release_host(card->func);
377 * This function reads multiple data from SDIO card memory.
379 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
380 u32 len, u32 port, u8 claim)
382 struct sdio_mmc_card *card = adapter->card;
384 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
386 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
387 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
389 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
392 sdio_claim_host(card->func);
394 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
397 sdio_release_host(card->func);
403 * This function wakes up the card.
405 * A host power up command is written to the card configuration
406 * register to wake up the card.
408 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
410 dev_dbg(adapter->dev, "event: wakeup device...\n");
412 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
416 * This function is called after the card has woken up.
418 * The card configuration register is reset.
420 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
422 dev_dbg(adapter->dev, "cmd: wakeup device completed\n");
424 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
428 * This function is used to initialize IO ports for the
429 * chipsets supporting SDIO new mode eg SD8897.
431 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
435 adapter->ioport = MEM_PORT;
437 /* enable sdio new mode */
438 if (mwifiex_read_reg(adapter, CARD_CONFIG_2_1_REG, ®))
440 if (mwifiex_write_reg(adapter, CARD_CONFIG_2_1_REG,
441 reg | CMD53_NEW_MODE))
444 /* Configure cmd port and enable reading rx length from the register */
445 if (mwifiex_read_reg(adapter, CMD_CONFIG_0, ®))
447 if (mwifiex_write_reg(adapter, CMD_CONFIG_0, reg | CMD_PORT_RD_LEN_EN))
450 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
453 if (mwifiex_read_reg(adapter, CMD_CONFIG_1, ®))
455 if (mwifiex_write_reg(adapter, CMD_CONFIG_1, reg | CMD_PORT_AUTO_EN))
461 /* This function initializes the IO ports.
463 * The following operations are performed -
464 * - Read the IO ports (0, 1 and 2)
465 * - Set host interrupt Reset-To-Read to clear
466 * - Set auto re-enable interrupt
468 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
471 struct sdio_mmc_card *card = adapter->card;
475 if (card->supports_sdio_new_mode) {
476 if (mwifiex_init_sdio_new_mode(adapter))
481 /* Read the IO port */
482 if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®))
483 adapter->ioport |= (reg & 0xff);
487 if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®))
488 adapter->ioport |= ((reg & 0xff) << 8);
492 if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®))
493 adapter->ioport |= ((reg & 0xff) << 16);
497 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
499 /* Set Host interrupt reset to read to clear */
500 if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®))
501 mwifiex_write_reg(adapter, HOST_INT_RSR_REG,
502 reg | card->reg->sdio_int_mask);
506 /* Dnld/Upld ready set to auto reset */
507 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
508 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
509 reg | AUTO_RE_ENABLE_INT);
517 * This function sends data to the card.
519 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
520 u8 *payload, u32 pkt_len, u32 port)
526 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
529 dev_err(adapter->dev, "host_to_card, write iomem"
530 " (%d) failed: %d\n", i, ret);
531 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
532 dev_err(adapter->dev, "write CFG reg failed\n");
535 if (i > MAX_WRITE_IOMEM_RETRY)
544 * This function gets the read port.
546 * If control port bit is set in MP read bitmap, the control port
547 * is returned, otherwise the current read port is returned and
548 * the value is increased (provided it does not reach the maximum
549 * limit, in which case it is reset to 1)
551 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
553 struct sdio_mmc_card *card = adapter->card;
554 const struct mwifiex_sdio_card_reg *reg = card->reg;
555 u32 rd_bitmap = card->mp_rd_bitmap;
557 dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
559 if (card->supports_sdio_new_mode) {
560 if (!(rd_bitmap & reg->data_port_mask))
563 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
567 if ((card->has_control_mask) &&
568 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
569 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
571 dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n",
572 *port, card->mp_rd_bitmap);
576 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
579 /* We are now handling the SDIO data ports */
580 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
581 *port = card->curr_rd_port;
583 if (++card->curr_rd_port == card->max_ports)
584 card->curr_rd_port = reg->start_rd_port;
586 dev_dbg(adapter->dev,
587 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
588 *port, rd_bitmap, card->mp_rd_bitmap);
594 * This function gets the write port for data.
596 * The current write port is returned if available and the value is
597 * increased (provided it does not reach the maximum limit, in which
598 * case it is reset to 1)
600 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
602 struct sdio_mmc_card *card = adapter->card;
603 const struct mwifiex_sdio_card_reg *reg = card->reg;
604 u32 wr_bitmap = card->mp_wr_bitmap;
606 dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
608 if (card->supports_sdio_new_mode &&
609 !(wr_bitmap & reg->data_port_mask)) {
610 adapter->data_sent = true;
612 } else if (!card->supports_sdio_new_mode &&
613 !(wr_bitmap & card->mp_data_port_mask)) {
617 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
618 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
619 *port = card->curr_wr_port;
620 if (((card->supports_sdio_new_mode) &&
621 (++card->curr_wr_port == card->max_ports)) ||
622 ((!card->supports_sdio_new_mode) &&
623 (++card->curr_wr_port == card->mp_end_port)))
624 card->curr_wr_port = reg->start_wr_port;
626 adapter->data_sent = true;
630 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
631 dev_err(adapter->dev,
632 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
633 *port, card->curr_wr_port, wr_bitmap,
638 dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
639 *port, wr_bitmap, card->mp_wr_bitmap);
645 * This function polls the card status.
648 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
650 struct sdio_mmc_card *card = adapter->card;
654 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
655 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
657 else if ((cs & bits) == bits)
660 usleep_range(10, 20);
663 dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries);
669 * This function reads the firmware status.
672 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
674 struct sdio_mmc_card *card = adapter->card;
675 const struct mwifiex_sdio_card_reg *reg = card->reg;
678 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
681 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
684 *dat = (u16) ((fws1 << 8) | fws0);
690 * This function disables the host interrupt.
692 * The host interrupt mask is read, the disable bit is reset and
693 * written back to the card host interrupt mask register.
695 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
697 struct sdio_mmc_card *card = adapter->card;
698 struct sdio_func *func = card->func;
700 sdio_claim_host(func);
701 mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, 0);
702 sdio_release_irq(func);
703 sdio_release_host(func);
707 * This function reads the interrupt status from card.
709 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
711 struct sdio_mmc_card *card = adapter->card;
715 if (mwifiex_read_data_sync(adapter, card->mp_regs,
716 card->reg->max_mp_regs,
717 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
718 dev_err(adapter->dev, "read mp_regs failed\n");
722 sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG];
725 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
726 * For SDIO new mode CMD port interrupts
727 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
728 * UP_LD_CMD_PORT_HOST_INT_STATUS
729 * Clear the interrupt status register
731 dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg);
732 spin_lock_irqsave(&adapter->int_lock, flags);
733 adapter->int_status |= sdio_ireg;
734 spin_unlock_irqrestore(&adapter->int_lock, flags);
739 * SDIO interrupt handler.
741 * This function reads the interrupt status from firmware and handles
742 * the interrupt in current thread (ksdioirqd) right away.
745 mwifiex_sdio_interrupt(struct sdio_func *func)
747 struct mwifiex_adapter *adapter;
748 struct sdio_mmc_card *card;
750 card = sdio_get_drvdata(func);
751 if (!card || !card->adapter) {
752 pr_debug("int: func=%p card=%p adapter=%p\n",
753 func, card, card ? card->adapter : NULL);
756 adapter = card->adapter;
758 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
759 adapter->ps_state = PS_STATE_AWAKE;
761 mwifiex_interrupt_status(adapter);
762 mwifiex_main_process(adapter);
766 * This function enables the host interrupt.
768 * The host interrupt enable mask is written to the card
769 * host interrupt mask register.
771 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
773 struct sdio_mmc_card *card = adapter->card;
774 struct sdio_func *func = card->func;
777 sdio_claim_host(func);
779 /* Request the SDIO IRQ */
780 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
782 dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret);
786 /* Simply write the mask to the register */
787 ret = mwifiex_write_reg_locked(func, HOST_INT_MASK_REG,
788 card->reg->host_int_enable);
790 dev_err(adapter->dev, "enable host interrupt failed\n");
791 sdio_release_irq(func);
795 sdio_release_host(func);
800 * This function sends a data buffer to the card.
802 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
803 u32 *type, u8 *buffer,
804 u32 npayload, u32 ioport)
810 dev_err(adapter->dev, "%s: buffer is NULL\n", __func__);
814 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
817 dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__,
822 nb = le16_to_cpu(*(__le16 *) (buffer));
824 dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n",
825 __func__, nb, npayload);
829 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
835 * This function downloads the firmware to the card.
837 * Firmware is downloaded to the card in blocks. Every block download
838 * is tested for CRC errors, and retried a number of times before
841 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
842 struct mwifiex_fw_image *fw)
844 struct sdio_mmc_card *card = adapter->card;
845 const struct mwifiex_sdio_card_reg *reg = card->reg;
847 u8 *firmware = fw->fw_buf;
848 u32 firmware_len = fw->fw_len;
853 u32 txlen, tx_blocks = 0, tries;
857 dev_err(adapter->dev,
858 "firmware image not found! Terminating download\n");
862 dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n",
865 /* Assume that the allocated buffer is 8-byte aligned */
866 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
870 /* Perform firmware data transfer */
872 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
874 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
877 dev_err(adapter->dev, "FW download with helper:"
878 " poll status timeout @ %d\n", offset);
883 if (offset >= firmware_len)
886 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
887 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
890 dev_err(adapter->dev,
891 "dev BASE0 register read failed: "
892 "base0=%#04X(%d). Terminating dnld\n",
896 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
899 dev_err(adapter->dev,
900 "dev BASE1 register read failed: "
901 "base1=%#04X(%d). Terminating dnld\n",
905 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
910 usleep_range(10, 20);
915 } else if (len > MWIFIEX_UPLD_SIZE) {
916 dev_err(adapter->dev,
917 "FW dnld failed @ %d, invalid length %d\n",
927 if (i > MAX_WRITE_IOMEM_RETRY) {
928 dev_err(adapter->dev,
929 "FW dnld failed @ %d, over max retry\n",
934 dev_err(adapter->dev, "CRC indicated by the helper:"
935 " len = 0x%04X, txlen = %d\n", len, txlen);
937 /* Setting this to 0 to resend from same offset */
942 /* Set blocksize to transfer - checking for last
944 if (firmware_len - offset < txlen)
945 txlen = firmware_len - offset;
947 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
948 / MWIFIEX_SDIO_BLOCK_SIZE;
950 /* Copy payload to buffer */
951 memmove(fwbuf, &firmware[offset], txlen);
954 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
955 MWIFIEX_SDIO_BLOCK_SIZE,
958 dev_err(adapter->dev,
959 "FW download, write iomem (%d) failed @ %d\n",
961 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
962 dev_err(adapter->dev, "write CFG reg failed\n");
971 dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n",
981 * This function checks the firmware status in card.
983 * The winner interface is also determined by this function.
985 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
988 struct sdio_mmc_card *card = adapter->card;
994 /* Wait for firmware initialization event */
995 for (tries = 0; tries < poll_num; tries++) {
996 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
999 if (firmware_stat == FIRMWARE_READY_SDIO) {
1009 if (mwifiex_read_reg
1010 (adapter, card->reg->status_reg_0, &winner_status))
1014 adapter->winner = 0;
1016 adapter->winner = 1;
1022 * This function decodes a received packet.
1024 * Based on the type, the packet is treated as either a data, or
1025 * a command response, or an event, and the correct handler
1026 * function is invoked.
1028 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1029 struct sk_buff *skb, u32 upld_typ)
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);
1745 sdio_set_drvdata(card->func, NULL);
1750 * This function registers the SDIO device.
1752 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1754 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1757 struct sdio_mmc_card *card = adapter->card;
1758 struct sdio_func *func = card->func;
1760 /* save adapter pointer in card */
1761 card->adapter = adapter;
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");
1773 sdio_set_drvdata(func, card);
1775 adapter->dev = &func->dev;
1777 strcpy(adapter->fw_name, card->firmware);
1783 * This function initializes the SDIO driver.
1785 * The following initializations steps are followed -
1786 * - Read the Host interrupt status register to acknowledge
1787 * the first interrupt got from bootloader
1788 * - Disable host interrupt mask register
1790 * - Initialize SDIO variables in card
1791 * - Allocate MP registers
1792 * - Allocate MPA Tx and Rx buffers
1794 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
1796 struct sdio_mmc_card *card = adapter->card;
1797 const struct mwifiex_sdio_card_reg *reg = card->reg;
1802 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1803 * from the bootloader. If we don't do this we get a interrupt
1804 * as soon as we register the irq.
1806 mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg);
1808 /* Get SDIO ioport */
1809 mwifiex_init_sdio_ioport(adapter);
1811 /* Initialize SDIO variables in card */
1812 card->mp_rd_bitmap = 0;
1813 card->mp_wr_bitmap = 0;
1814 card->curr_rd_port = reg->start_rd_port;
1815 card->curr_wr_port = reg->start_wr_port;
1817 card->mp_data_port_mask = reg->data_port_mask;
1819 card->mpa_tx.buf_len = 0;
1820 card->mpa_tx.pkt_cnt = 0;
1821 card->mpa_tx.start_port = 0;
1823 card->mpa_tx.enabled = 1;
1824 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1826 card->mpa_rx.buf_len = 0;
1827 card->mpa_rx.pkt_cnt = 0;
1828 card->mpa_rx.start_port = 0;
1830 card->mpa_rx.enabled = 1;
1831 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1833 /* Allocate buffers for SDIO MP-A */
1834 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
1838 /* Allocate skb pointer buffers */
1839 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
1840 card->mp_agg_pkt_limit, GFP_KERNEL);
1841 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
1842 card->mp_agg_pkt_limit, GFP_KERNEL);
1843 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
1844 SDIO_MP_TX_AGGR_DEF_BUF_SIZE,
1845 SDIO_MP_RX_AGGR_DEF_BUF_SIZE);
1847 dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n");
1848 kfree(card->mp_regs);
1856 * This function resets the MPA Tx and Rx buffers.
1858 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
1860 struct sdio_mmc_card *card = adapter->card;
1862 MP_TX_AGGR_BUF_RESET(card);
1863 MP_RX_AGGR_BUF_RESET(card);
1867 * This function cleans up the allocated card buffers.
1869 * The following are freed by this function -
1874 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
1876 struct sdio_mmc_card *card = adapter->card;
1878 kfree(card->mp_regs);
1879 kfree(card->mpa_rx.skb_arr);
1880 kfree(card->mpa_rx.len_arr);
1881 kfree(card->mpa_tx.buf);
1882 kfree(card->mpa_rx.buf);
1886 * This function updates the MP end port in card.
1889 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
1891 struct sdio_mmc_card *card = adapter->card;
1892 const struct mwifiex_sdio_card_reg *reg = card->reg;
1895 card->mp_end_port = port;
1897 card->mp_data_port_mask = reg->data_port_mask;
1899 if (reg->start_wr_port) {
1900 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
1901 card->mp_data_port_mask &=
1902 ~(1 << (card->max_ports - i));
1905 card->curr_wr_port = reg->start_wr_port;
1907 dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n",
1908 port, card->mp_data_port_mask);
1911 static struct mmc_host *reset_host;
1912 static void sdio_card_reset_worker(struct work_struct *work)
1914 struct mmc_host *target = reset_host;
1916 /* The actual reset operation must be run outside of driver thread.
1917 * This is because mmc_remove_host() will cause the device to be
1918 * instantly destroyed, and the driver then needs to end its thread,
1919 * leading to a deadlock.
1921 * We run it in a totally independent workqueue.
1924 pr_err("Resetting card...\n");
1925 mmc_remove_host(target);
1926 /* 20ms delay is based on experiment with sdhci controller */
1928 mmc_add_host(target);
1930 static DECLARE_WORK(card_reset_work, sdio_card_reset_worker);
1932 /* This function resets the card */
1933 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
1935 struct sdio_mmc_card *card = adapter->card;
1937 reset_host = card->func->card->host;
1938 schedule_work(&card_reset_work);
1941 static struct mwifiex_if_ops sdio_ops = {
1942 .init_if = mwifiex_init_sdio,
1943 .cleanup_if = mwifiex_cleanup_sdio,
1944 .check_fw_status = mwifiex_check_fw_status,
1945 .prog_fw = mwifiex_prog_fw_w_helper,
1946 .register_dev = mwifiex_register_dev,
1947 .unregister_dev = mwifiex_unregister_dev,
1948 .enable_int = mwifiex_sdio_enable_host_int,
1949 .disable_int = mwifiex_sdio_disable_host_int,
1950 .process_int_status = mwifiex_process_int_status,
1951 .host_to_card = mwifiex_sdio_host_to_card,
1952 .wakeup = mwifiex_pm_wakeup_card,
1953 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
1956 .update_mp_end_port = mwifiex_update_mp_end_port,
1957 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
1958 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
1959 .event_complete = mwifiex_sdio_event_complete,
1960 .card_reset = mwifiex_sdio_card_reset,
1964 * This function initializes the SDIO driver.
1966 * This initiates the semaphore and registers the device with
1970 mwifiex_sdio_init_module(void)
1972 sema_init(&add_remove_card_sem, 1);
1974 /* Clear the flag in case user removes the card. */
1977 return sdio_register_driver(&mwifiex_sdio);
1981 * This function cleans up the SDIO driver.
1983 * The following major steps are followed for cleanup -
1984 * - Resume the device if its suspended
1985 * - Disconnect the device if connected
1986 * - Shutdown the firmware
1987 * - Unregister the device from SDIO bus.
1990 mwifiex_sdio_cleanup_module(void)
1992 if (!down_interruptible(&add_remove_card_sem))
1993 up(&add_remove_card_sem);
1995 /* Set the flag as user is removing this module. */
1998 cancel_work_sync(&card_reset_work);
1999 sdio_unregister_driver(&mwifiex_sdio);
2002 module_init(mwifiex_sdio_init_module);
2003 module_exit(mwifiex_sdio_cleanup_module);
2005 MODULE_AUTHOR("Marvell International Ltd.");
2006 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2007 MODULE_VERSION(SDIO_VERSION);
2008 MODULE_LICENSE("GPL v2");
2009 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2010 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2011 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2012 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);