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;
88 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
89 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
92 sdio_claim_host(func);
93 ret = sdio_enable_func(func);
94 sdio_release_host(func);
97 pr_err("%s: failed to enable function\n", __func__);
102 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
104 pr_err("%s: add card failed\n", __func__);
106 sdio_claim_host(func);
107 ret = sdio_disable_func(func);
108 sdio_release_host(func);
118 * Kernel needs to suspend all functions separately. Therefore all
119 * registered functions must have drivers with suspend and resume
120 * methods. Failing that the kernel simply removes the whole card.
122 * If already not resumed, this function turns on the traffic and
123 * sends a host sleep cancel request to the firmware.
125 static int mwifiex_sdio_resume(struct device *dev)
127 struct sdio_func *func = dev_to_sdio_func(dev);
128 struct sdio_mmc_card *card;
129 struct mwifiex_adapter *adapter;
130 mmc_pm_flag_t pm_flag = 0;
133 pm_flag = sdio_get_host_pm_caps(func);
134 card = sdio_get_drvdata(func);
135 if (!card || !card->adapter) {
136 pr_err("resume: invalid card or adapter\n");
140 pr_err("resume: sdio_func is not specified\n");
144 adapter = card->adapter;
146 if (!adapter->is_suspended) {
147 dev_warn(adapter->dev, "device already resumed\n");
151 adapter->is_suspended = false;
153 /* Disable Host Sleep */
154 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
163 * This function removes the interface and frees up the card structure.
166 mwifiex_sdio_remove(struct sdio_func *func)
168 struct sdio_mmc_card *card;
169 struct mwifiex_adapter *adapter;
170 struct mwifiex_private *priv;
172 pr_debug("info: SDIO func num=%d\n", func->num);
174 card = sdio_get_drvdata(func);
178 adapter = card->adapter;
179 if (!adapter || !adapter->priv_num)
183 if (adapter->is_suspended)
184 mwifiex_sdio_resume(adapter->dev);
186 mwifiex_deauthenticate_all(adapter);
188 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
189 mwifiex_disable_auto_ds(priv);
190 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
193 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
199 * Kernel needs to suspend all functions separately. Therefore all
200 * registered functions must have drivers with suspend and resume
201 * methods. Failing that the kernel simply removes the whole card.
203 * If already not suspended, this function allocates and sends a host
204 * sleep activate request to the firmware and turns off the traffic.
206 static int mwifiex_sdio_suspend(struct device *dev)
208 struct sdio_func *func = dev_to_sdio_func(dev);
209 struct sdio_mmc_card *card;
210 struct mwifiex_adapter *adapter;
211 mmc_pm_flag_t pm_flag = 0;
215 pm_flag = sdio_get_host_pm_caps(func);
216 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
217 sdio_func_id(func), pm_flag);
218 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
219 pr_err("%s: cannot remain alive while host is"
220 " suspended\n", sdio_func_id(func));
224 card = sdio_get_drvdata(func);
225 if (!card || !card->adapter) {
226 pr_err("suspend: invalid card or adapter\n");
230 pr_err("suspend: sdio_func is not specified\n");
234 adapter = card->adapter;
236 /* Enable the Host Sleep */
237 if (!mwifiex_enable_hs(adapter)) {
238 dev_err(adapter->dev, "cmd: failed to suspend\n");
239 adapter->hs_enabling = false;
243 dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n");
244 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
246 /* Indicate device suspended */
247 adapter->is_suspended = true;
248 adapter->hs_enabling = false;
253 /* Device ID for SD8786 */
254 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
255 /* Device ID for SD8787 */
256 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
257 /* Device ID for SD8797 */
258 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
259 /* Device ID for SD8897 */
260 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
263 static const struct sdio_device_id mwifiex_ids[] = {
264 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
265 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
266 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
267 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
268 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
269 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
270 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
271 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
275 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
277 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
278 .suspend = mwifiex_sdio_suspend,
279 .resume = mwifiex_sdio_resume,
282 static struct sdio_driver mwifiex_sdio = {
283 .name = "mwifiex_sdio",
284 .id_table = mwifiex_ids,
285 .probe = mwifiex_sdio_probe,
286 .remove = mwifiex_sdio_remove,
288 .owner = THIS_MODULE,
289 .pm = &mwifiex_sdio_pm_ops,
293 /* Write data into SDIO card register. Caller claims SDIO device. */
295 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
298 sdio_writeb(func, data, reg, &ret);
303 * This function writes data into SDIO card register.
306 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
308 struct sdio_mmc_card *card = adapter->card;
311 sdio_claim_host(card->func);
312 ret = mwifiex_write_reg_locked(card->func, reg, data);
313 sdio_release_host(card->func);
319 * This function reads data from SDIO card register.
322 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
324 struct sdio_mmc_card *card = adapter->card;
328 sdio_claim_host(card->func);
329 val = sdio_readb(card->func, reg, &ret);
330 sdio_release_host(card->func);
338 * This function writes multiple data into SDIO card memory.
340 * This does not work in suspended mode.
343 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
344 u8 *buffer, u32 pkt_len, u32 port)
346 struct sdio_mmc_card *card = adapter->card;
349 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
350 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
353 BLOCK_MODE) ? (pkt_len /
354 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
355 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
357 if (adapter->is_suspended) {
358 dev_err(adapter->dev,
359 "%s: not allowed while suspended\n", __func__);
363 sdio_claim_host(card->func);
365 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
367 sdio_release_host(card->func);
373 * This function reads multiple data from SDIO card memory.
375 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
376 u32 len, u32 port, u8 claim)
378 struct sdio_mmc_card *card = adapter->card;
380 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
382 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
383 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
385 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
388 sdio_claim_host(card->func);
390 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
393 sdio_release_host(card->func);
399 * This function wakes up the card.
401 * A host power up command is written to the card configuration
402 * register to wake up the card.
404 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
406 dev_dbg(adapter->dev, "event: wakeup device...\n");
408 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
412 * This function is called after the card has woken up.
414 * The card configuration register is reset.
416 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
418 dev_dbg(adapter->dev, "cmd: wakeup device completed\n");
420 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
424 * This function is used to initialize IO ports for the
425 * chipsets supporting SDIO new mode eg SD8897.
427 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
431 adapter->ioport = MEM_PORT;
433 /* enable sdio new mode */
434 if (mwifiex_read_reg(adapter, CARD_CONFIG_2_1_REG, ®))
436 if (mwifiex_write_reg(adapter, CARD_CONFIG_2_1_REG,
437 reg | CMD53_NEW_MODE))
440 /* Configure cmd port and enable reading rx length from the register */
441 if (mwifiex_read_reg(adapter, CMD_CONFIG_0, ®))
443 if (mwifiex_write_reg(adapter, CMD_CONFIG_0, reg | CMD_PORT_RD_LEN_EN))
446 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
449 if (mwifiex_read_reg(adapter, CMD_CONFIG_1, ®))
451 if (mwifiex_write_reg(adapter, CMD_CONFIG_1, reg | CMD_PORT_AUTO_EN))
457 /* This function initializes the IO ports.
459 * The following operations are performed -
460 * - Read the IO ports (0, 1 and 2)
461 * - Set host interrupt Reset-To-Read to clear
462 * - Set auto re-enable interrupt
464 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
467 struct sdio_mmc_card *card = adapter->card;
471 if (card->supports_sdio_new_mode) {
472 if (mwifiex_init_sdio_new_mode(adapter))
477 /* Read the IO port */
478 if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®))
479 adapter->ioport |= (reg & 0xff);
483 if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®))
484 adapter->ioport |= ((reg & 0xff) << 8);
488 if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®))
489 adapter->ioport |= ((reg & 0xff) << 16);
493 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
495 /* Set Host interrupt reset to read to clear */
496 if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®))
497 mwifiex_write_reg(adapter, HOST_INT_RSR_REG,
498 reg | card->reg->sdio_int_mask);
502 /* Dnld/Upld ready set to auto reset */
503 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
504 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
505 reg | AUTO_RE_ENABLE_INT);
513 * This function sends data to the card.
515 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
516 u8 *payload, u32 pkt_len, u32 port)
522 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
525 dev_err(adapter->dev, "host_to_card, write iomem"
526 " (%d) failed: %d\n", i, ret);
527 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
528 dev_err(adapter->dev, "write CFG reg failed\n");
531 if (i > MAX_WRITE_IOMEM_RETRY)
540 * This function gets the read port.
542 * If control port bit is set in MP read bitmap, the control port
543 * is returned, otherwise the current read port is returned and
544 * the value is increased (provided it does not reach the maximum
545 * limit, in which case it is reset to 1)
547 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
549 struct sdio_mmc_card *card = adapter->card;
550 const struct mwifiex_sdio_card_reg *reg = card->reg;
551 u32 rd_bitmap = card->mp_rd_bitmap;
553 dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
555 if (card->supports_sdio_new_mode) {
556 if (!(rd_bitmap & reg->data_port_mask))
559 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
563 if ((card->has_control_mask) &&
564 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
565 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
567 dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n",
568 *port, card->mp_rd_bitmap);
572 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
575 /* We are now handling the SDIO data ports */
576 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
577 *port = card->curr_rd_port;
579 if (++card->curr_rd_port == card->max_ports)
580 card->curr_rd_port = reg->start_rd_port;
582 dev_dbg(adapter->dev,
583 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
584 *port, rd_bitmap, card->mp_rd_bitmap);
590 * This function gets the write port for data.
592 * The current write port is returned if available and the value is
593 * increased (provided it does not reach the maximum limit, in which
594 * case it is reset to 1)
596 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
598 struct sdio_mmc_card *card = adapter->card;
599 const struct mwifiex_sdio_card_reg *reg = card->reg;
600 u32 wr_bitmap = card->mp_wr_bitmap;
602 dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
604 if (card->supports_sdio_new_mode &&
605 !(wr_bitmap & reg->data_port_mask)) {
606 adapter->data_sent = true;
608 } else if (!card->supports_sdio_new_mode &&
609 !(wr_bitmap & card->mp_data_port_mask)) {
613 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
614 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
615 *port = card->curr_wr_port;
616 if (((card->supports_sdio_new_mode) &&
617 (++card->curr_wr_port == card->max_ports)) ||
618 ((!card->supports_sdio_new_mode) &&
619 (++card->curr_wr_port == card->mp_end_port)))
620 card->curr_wr_port = reg->start_wr_port;
622 adapter->data_sent = true;
626 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
627 dev_err(adapter->dev,
628 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
629 *port, card->curr_wr_port, wr_bitmap,
634 dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
635 *port, wr_bitmap, card->mp_wr_bitmap);
641 * This function polls the card status.
644 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
646 struct sdio_mmc_card *card = adapter->card;
650 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
651 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
653 else if ((cs & bits) == bits)
656 usleep_range(10, 20);
659 dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries);
665 * This function reads the firmware status.
668 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
670 struct sdio_mmc_card *card = adapter->card;
671 const struct mwifiex_sdio_card_reg *reg = card->reg;
674 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
677 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
680 *dat = (u16) ((fws1 << 8) | fws0);
686 * This function disables the host interrupt.
688 * The host interrupt mask is read, the disable bit is reset and
689 * written back to the card host interrupt mask register.
691 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
693 struct sdio_mmc_card *card = adapter->card;
694 struct sdio_func *func = card->func;
696 sdio_claim_host(func);
697 mwifiex_write_reg_locked(func, HOST_INT_MASK_REG, 0);
698 sdio_release_irq(func);
699 sdio_release_host(func);
703 * This function reads the interrupt status from card.
705 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
707 struct sdio_mmc_card *card = adapter->card;
711 if (mwifiex_read_data_sync(adapter, card->mp_regs,
712 card->reg->max_mp_regs,
713 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
714 dev_err(adapter->dev, "read mp_regs failed\n");
718 sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG];
721 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
722 * For SDIO new mode CMD port interrupts
723 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
724 * UP_LD_CMD_PORT_HOST_INT_STATUS
725 * Clear the interrupt status register
727 dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg);
728 spin_lock_irqsave(&adapter->int_lock, flags);
729 adapter->int_status |= sdio_ireg;
730 spin_unlock_irqrestore(&adapter->int_lock, flags);
735 * SDIO interrupt handler.
737 * This function reads the interrupt status from firmware and handles
738 * the interrupt in current thread (ksdioirqd) right away.
741 mwifiex_sdio_interrupt(struct sdio_func *func)
743 struct mwifiex_adapter *adapter;
744 struct sdio_mmc_card *card;
746 card = sdio_get_drvdata(func);
747 if (!card || !card->adapter) {
748 pr_debug("int: func=%p card=%p adapter=%p\n",
749 func, card, card ? card->adapter : NULL);
752 adapter = card->adapter;
754 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
755 adapter->ps_state = PS_STATE_AWAKE;
757 mwifiex_interrupt_status(adapter);
758 mwifiex_main_process(adapter);
762 * This function enables the host interrupt.
764 * The host interrupt enable mask is written to the card
765 * host interrupt mask register.
767 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
769 struct sdio_mmc_card *card = adapter->card;
770 struct sdio_func *func = card->func;
773 sdio_claim_host(func);
775 /* Request the SDIO IRQ */
776 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
778 dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret);
782 /* Simply write the mask to the register */
783 ret = mwifiex_write_reg_locked(func, HOST_INT_MASK_REG,
784 card->reg->host_int_enable);
786 dev_err(adapter->dev, "enable host interrupt failed\n");
787 sdio_release_irq(func);
791 sdio_release_host(func);
796 * This function sends a data buffer to the card.
798 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
799 u32 *type, u8 *buffer,
800 u32 npayload, u32 ioport)
806 dev_err(adapter->dev, "%s: buffer is NULL\n", __func__);
810 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
813 dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__,
818 nb = le16_to_cpu(*(__le16 *) (buffer));
820 dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n",
821 __func__, nb, npayload);
825 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
831 * This function downloads the firmware to the card.
833 * Firmware is downloaded to the card in blocks. Every block download
834 * is tested for CRC errors, and retried a number of times before
837 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
838 struct mwifiex_fw_image *fw)
840 struct sdio_mmc_card *card = adapter->card;
841 const struct mwifiex_sdio_card_reg *reg = card->reg;
843 u8 *firmware = fw->fw_buf;
844 u32 firmware_len = fw->fw_len;
849 u32 txlen, tx_blocks = 0, tries;
853 dev_err(adapter->dev,
854 "firmware image not found! Terminating download\n");
858 dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n",
861 /* Assume that the allocated buffer is 8-byte aligned */
862 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
866 /* Perform firmware data transfer */
868 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
870 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
873 dev_err(adapter->dev, "FW download with helper:"
874 " poll status timeout @ %d\n", offset);
879 if (offset >= firmware_len)
882 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
883 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
886 dev_err(adapter->dev,
887 "dev BASE0 register read failed: "
888 "base0=%#04X(%d). Terminating dnld\n",
892 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
895 dev_err(adapter->dev,
896 "dev BASE1 register read failed: "
897 "base1=%#04X(%d). Terminating dnld\n",
901 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
906 usleep_range(10, 20);
911 } else if (len > MWIFIEX_UPLD_SIZE) {
912 dev_err(adapter->dev,
913 "FW dnld failed @ %d, invalid length %d\n",
923 if (i > MAX_WRITE_IOMEM_RETRY) {
924 dev_err(adapter->dev,
925 "FW dnld failed @ %d, over max retry\n",
930 dev_err(adapter->dev, "CRC indicated by the helper:"
931 " len = 0x%04X, txlen = %d\n", len, txlen);
933 /* Setting this to 0 to resend from same offset */
938 /* Set blocksize to transfer - checking for last
940 if (firmware_len - offset < txlen)
941 txlen = firmware_len - offset;
943 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
944 / MWIFIEX_SDIO_BLOCK_SIZE;
946 /* Copy payload to buffer */
947 memmove(fwbuf, &firmware[offset], txlen);
950 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
951 MWIFIEX_SDIO_BLOCK_SIZE,
954 dev_err(adapter->dev,
955 "FW download, write iomem (%d) failed @ %d\n",
957 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
958 dev_err(adapter->dev, "write CFG reg failed\n");
967 dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n",
977 * This function checks the firmware status in card.
979 * The winner interface is also determined by this function.
981 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
984 struct sdio_mmc_card *card = adapter->card;
990 /* Wait for firmware initialization event */
991 for (tries = 0; tries < poll_num; tries++) {
992 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
995 if (firmware_stat == FIRMWARE_READY_SDIO) {
1005 if (mwifiex_read_reg
1006 (adapter, card->reg->status_reg_0, &winner_status))
1010 adapter->winner = 0;
1012 adapter->winner = 1;
1018 * This function decodes a received packet.
1020 * Based on the type, the packet is treated as either a data, or
1021 * a command response, or an event, and the correct handler
1022 * function is invoked.
1024 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1025 struct sk_buff *skb, u32 upld_typ)
1028 __le16 *curr_ptr = (__le16 *)skb->data;
1029 u16 pkt_len = le16_to_cpu(*curr_ptr);
1031 skb_trim(skb, pkt_len);
1032 skb_pull(skb, INTF_HEADER_LEN);
1035 case MWIFIEX_TYPE_DATA:
1036 dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n");
1037 mwifiex_handle_rx_packet(adapter, skb);
1040 case MWIFIEX_TYPE_CMD:
1041 dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n");
1042 /* take care of curr_cmd = NULL case */
1043 if (!adapter->curr_cmd) {
1044 cmd_buf = adapter->upld_buf;
1046 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1047 mwifiex_process_sleep_confirm_resp(adapter,
1051 memcpy(cmd_buf, skb->data,
1052 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1055 dev_kfree_skb_any(skb);
1057 adapter->cmd_resp_received = true;
1058 adapter->curr_cmd->resp_skb = skb;
1062 case MWIFIEX_TYPE_EVENT:
1063 dev_dbg(adapter->dev, "info: --- Rx: Event ---\n");
1064 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
1066 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1067 memcpy(adapter->event_body,
1068 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1071 /* event cause has been saved to adapter->event_cause */
1072 adapter->event_received = true;
1073 adapter->event_skb = skb;
1078 dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ);
1079 dev_kfree_skb_any(skb);
1087 * This function transfers received packets from card to driver, performing
1088 * aggregation if required.
1090 * For data received on control port, or if aggregation is disabled, the
1091 * received buffers are uploaded as separate packets. However, if aggregation
1092 * is enabled and required, the buffers are copied onto an aggregation buffer,
1093 * provided there is space left, processed and finally uploaded.
1095 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1096 struct sk_buff *skb, u8 port)
1098 struct sdio_mmc_card *card = adapter->card;
1099 s32 f_do_rx_aggr = 0;
1100 s32 f_do_rx_cur = 0;
1102 struct sk_buff *skb_deaggr;
1104 u32 pkt_len, pkt_type, mport;
1106 u32 rx_len = skb->len;
1108 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1109 /* Read the command Resp without aggr */
1110 dev_dbg(adapter->dev, "info: %s: no aggregation for cmd "
1111 "response\n", __func__);
1114 goto rx_curr_single;
1117 if (!card->mpa_rx.enabled) {
1118 dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n",
1122 goto rx_curr_single;
1125 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1126 card->reg->data_port_mask)) ||
1127 (card->has_control_mask && (card->mp_rd_bitmap &
1128 (~((u32) CTRL_PORT_MASK))))) {
1129 /* Some more data RX pending */
1130 dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__);
1132 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1133 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) {
1136 /* No room in Aggr buf, do rx aggr now */
1141 /* Rx aggr not in progress */
1146 /* No more data RX pending */
1147 dev_dbg(adapter->dev, "info: %s: last packet\n", __func__);
1149 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1151 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len))
1154 /* No room in Aggr buf, do rx aggr now */
1162 dev_dbg(adapter->dev, "info: current packet aggregation\n");
1163 /* Curr pkt can be aggregated */
1164 mp_rx_aggr_setup(card, skb, port);
1166 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1167 mp_rx_aggr_port_limit_reached(card)) {
1168 dev_dbg(adapter->dev, "info: %s: aggregated packet "
1169 "limit reached\n", __func__);
1170 /* No more pkts allowed in Aggr buf, rx it */
1176 /* do aggr RX now */
1177 dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n",
1178 card->mpa_rx.pkt_cnt);
1180 if (card->supports_sdio_new_mode) {
1184 for (i = 0, port_count = 0; i < card->max_ports; i++)
1185 if (card->mpa_rx.ports & BIT(i))
1188 /* Reading data from "start_port + 0" to "start_port +
1189 * port_count -1", so decrease the count by 1
1192 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1193 (port_count << 8)) + card->mpa_rx.start_port;
1195 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1196 (card->mpa_rx.ports << 4)) +
1197 card->mpa_rx.start_port;
1200 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1201 card->mpa_rx.buf_len, mport, 1))
1204 curr_ptr = card->mpa_rx.buf;
1206 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1208 /* get curr PKT len & type */
1209 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1210 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
1212 /* copy pkt to deaggr buf */
1213 skb_deaggr = card->mpa_rx.skb_arr[pind];
1215 if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <=
1216 card->mpa_rx.len_arr[pind])) {
1218 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1220 skb_trim(skb_deaggr, pkt_len);
1222 /* Process de-aggr packet */
1223 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1226 dev_err(adapter->dev, "wrong aggr pkt:"
1227 " type=%d len=%d max_len=%d\n",
1229 card->mpa_rx.len_arr[pind]);
1230 dev_kfree_skb_any(skb_deaggr);
1232 curr_ptr += card->mpa_rx.len_arr[pind];
1234 MP_RX_AGGR_BUF_RESET(card);
1239 dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n",
1242 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1243 skb->data, skb->len,
1244 adapter->ioport + port))
1247 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1253 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1254 /* Multiport-aggregation transfer failed - cleanup */
1255 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1256 /* copy pkt to deaggr buf */
1257 skb_deaggr = card->mpa_rx.skb_arr[pind];
1258 dev_kfree_skb_any(skb_deaggr);
1260 MP_RX_AGGR_BUF_RESET(card);
1264 /* Single transfer pending. Free curr buff also */
1265 dev_kfree_skb_any(skb);
1271 * This function checks the current interrupt status.
1273 * The following interrupts are checked and handled by this function -
1276 * - Packets received
1278 * Since the firmware does not generate download ready interrupt if the
1279 * port updated is command port only, command sent interrupt checking
1280 * should be done manually, and for every SDIO interrupt.
1282 * In case of Rx packets received, the packets are uploaded from card to
1283 * host and processed accordingly.
1285 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1287 struct sdio_mmc_card *card = adapter->card;
1288 const struct mwifiex_sdio_card_reg *reg = card->reg;
1291 struct sk_buff *skb;
1292 u8 port = CTRL_PORT;
1293 u32 len_reg_l, len_reg_u;
1296 unsigned long flags;
1300 spin_lock_irqsave(&adapter->int_lock, flags);
1301 sdio_ireg = adapter->int_status;
1302 adapter->int_status = 0;
1303 spin_unlock_irqrestore(&adapter->int_lock, flags);
1308 /* Following interrupt is only for SDIO new mode */
1309 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1310 adapter->cmd_sent = false;
1312 /* Following interrupt is only for SDIO new mode */
1313 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1316 /* read the len of control packet */
1317 rx_len = card->mp_regs[CMD_RD_LEN_1] << 8;
1318 rx_len |= (u16) card->mp_regs[CMD_RD_LEN_0];
1319 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1320 if (rx_len <= INTF_HEADER_LEN ||
1321 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1322 MWIFIEX_RX_DATA_BUF_SIZE)
1324 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1326 skb = dev_alloc_skb(rx_len);
1330 skb_put(skb, rx_len);
1332 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1333 skb->len, adapter->ioport |
1335 dev_err(adapter->dev,
1336 "%s: failed to card_to_host", __func__);
1337 dev_kfree_skb_any(skb);
1341 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1342 (pkt_type != MWIFIEX_TYPE_EVENT))
1343 dev_err(adapter->dev,
1344 "%s:Received wrong packet on cmd port",
1347 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1350 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1351 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1352 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1353 if (card->supports_sdio_new_mode) {
1355 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1357 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1359 card->mp_wr_bitmap = bitmap;
1361 dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n",
1362 card->mp_wr_bitmap);
1363 if (adapter->data_sent &&
1364 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1365 dev_dbg(adapter->dev,
1366 "info: <--- Tx DONE Interrupt --->\n");
1367 adapter->data_sent = false;
1371 /* As firmware will not generate download ready interrupt if the port
1372 updated is command port only, cmd_sent should be done for any SDIO
1374 if (card->has_control_mask && adapter->cmd_sent) {
1375 /* Check if firmware has attach buffer at command port and
1376 update just that in wr_bit_map. */
1377 card->mp_wr_bitmap |=
1378 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1379 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1380 adapter->cmd_sent = false;
1383 dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
1384 adapter->cmd_sent, adapter->data_sent);
1385 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1386 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1387 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1388 if (card->supports_sdio_new_mode) {
1390 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1392 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1394 card->mp_rd_bitmap = bitmap;
1395 dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n",
1396 card->mp_rd_bitmap);
1399 ret = mwifiex_get_rd_port(adapter, &port);
1401 dev_dbg(adapter->dev,
1402 "info: no more rd_port available\n");
1405 len_reg_l = reg->rd_len_p0_l + (port << 1);
1406 len_reg_u = reg->rd_len_p0_u + (port << 1);
1407 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1408 rx_len |= (u16) card->mp_regs[len_reg_l];
1409 dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n",
1412 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1413 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1414 if (rx_len <= INTF_HEADER_LEN ||
1415 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1416 MWIFIEX_RX_DATA_BUF_SIZE) {
1417 dev_err(adapter->dev, "invalid rx_len=%d\n",
1421 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1423 skb = dev_alloc_skb(rx_len);
1426 dev_err(adapter->dev, "%s: failed to alloc skb",
1431 skb_put(skb, rx_len);
1433 dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n",
1436 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb,
1438 dev_err(adapter->dev, "card_to_host_mpa failed:"
1439 " int status=%#x\n", sdio_ireg);
1449 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1450 dev_err(adapter->dev, "read CFG reg failed\n");
1452 dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr);
1454 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1455 dev_err(adapter->dev, "write CFG reg failed\n");
1457 dev_dbg(adapter->dev, "info: write success\n");
1459 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1460 dev_err(adapter->dev, "read CFG reg failed\n");
1462 dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr);
1468 * This function aggregates transmission buffers in driver and downloads
1469 * the aggregated packet to card.
1471 * The individual packets are aggregated by copying into an aggregation
1472 * buffer and then downloaded to the card. Previous unsent packets in the
1473 * aggregation buffer are pre-copied first before new packets are added.
1474 * Aggregation is done till there is space left in the aggregation buffer,
1475 * or till new packets are available.
1477 * The function will only download the packet to the card when aggregation
1478 * stops, otherwise it will just aggregate the packet in aggregation buffer
1481 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1482 u8 *payload, u32 pkt_len, u32 port,
1485 struct sdio_mmc_card *card = adapter->card;
1487 s32 f_send_aggr_buf = 0;
1488 s32 f_send_cur_buf = 0;
1489 s32 f_precopy_cur_buf = 0;
1490 s32 f_postcopy_cur_buf = 0;
1493 if (!card->mpa_tx.enabled ||
1494 (card->has_control_mask && (port == CTRL_PORT)) ||
1495 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1496 dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n",
1500 goto tx_curr_single;
1504 /* More pkt in TX queue */
1505 dev_dbg(adapter->dev, "info: %s: more packets in queue.\n",
1508 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1509 if (!mp_tx_aggr_port_limit_reached(card) &&
1510 MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1511 f_precopy_cur_buf = 1;
1513 if (!(card->mp_wr_bitmap &
1514 (1 << card->curr_wr_port)) ||
1515 !MP_TX_AGGR_BUF_HAS_ROOM(
1516 card, pkt_len + next_pkt_len))
1517 f_send_aggr_buf = 1;
1519 /* No room in Aggr buf, send it */
1520 f_send_aggr_buf = 1;
1522 if (mp_tx_aggr_port_limit_reached(card) ||
1523 !(card->mp_wr_bitmap &
1524 (1 << card->curr_wr_port)))
1527 f_postcopy_cur_buf = 1;
1530 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1531 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1532 f_precopy_cur_buf = 1;
1537 /* Last pkt in TX queue */
1538 dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n",
1541 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1542 /* some packs in Aggr buf already */
1543 f_send_aggr_buf = 1;
1545 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1546 f_precopy_cur_buf = 1;
1548 /* No room in Aggr buf, send it */
1555 if (f_precopy_cur_buf) {
1556 dev_dbg(adapter->dev, "data: %s: precopy current buffer\n",
1558 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1560 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1561 mp_tx_aggr_port_limit_reached(card))
1562 /* No more pkts allowed in Aggr buf, send it */
1563 f_send_aggr_buf = 1;
1566 if (f_send_aggr_buf) {
1567 dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n",
1569 card->mpa_tx.start_port, card->mpa_tx.ports);
1570 if (card->supports_sdio_new_mode) {
1574 for (i = 0, port_count = 0; i < card->max_ports; i++)
1575 if (card->mpa_tx.ports & BIT(i))
1578 /* Writing data from "start_port + 0" to "start_port +
1579 * port_count -1", so decrease the count by 1
1582 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1583 (port_count << 8)) + card->mpa_tx.start_port;
1585 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1586 (card->mpa_tx.ports << 4)) +
1587 card->mpa_tx.start_port;
1590 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1591 card->mpa_tx.buf_len, mport);
1593 MP_TX_AGGR_BUF_RESET(card);
1597 if (f_send_cur_buf) {
1598 dev_dbg(adapter->dev, "data: %s: send current buffer %d\n",
1600 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1601 adapter->ioport + port);
1604 if (f_postcopy_cur_buf) {
1605 dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n",
1607 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1614 * This function downloads data from driver to card.
1616 * Both commands and data packets are transferred to the card by this
1619 * This function adds the SDIO specific header to the front of the buffer
1620 * before transferring. The header contains the length of the packet and
1621 * the type. The firmware handles the packets based upon this set type.
1623 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1624 u8 type, struct sk_buff *skb,
1625 struct mwifiex_tx_param *tx_param)
1627 struct sdio_mmc_card *card = adapter->card;
1631 u32 port = CTRL_PORT;
1632 u8 *payload = (u8 *)skb->data;
1633 u32 pkt_len = skb->len;
1635 /* Allocate buffer and copy payload */
1636 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1637 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1638 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1639 *(__le16 *)&payload[2] = cpu_to_le16(type);
1642 * This is SDIO specific header
1644 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1645 * MWIFIEX_TYPE_EVENT = 3)
1647 if (type == MWIFIEX_TYPE_DATA) {
1648 ret = mwifiex_get_wr_port_data(adapter, &port);
1650 dev_err(adapter->dev, "%s: no wr_port available\n",
1655 adapter->cmd_sent = true;
1656 /* Type must be MWIFIEX_TYPE_CMD */
1658 if (pkt_len <= INTF_HEADER_LEN ||
1659 pkt_len > MWIFIEX_UPLD_SIZE)
1660 dev_err(adapter->dev, "%s: payload=%p, nb=%d\n",
1661 __func__, payload, pkt_len);
1663 if (card->supports_sdio_new_mode)
1664 port = CMD_PORT_SLCT;
1667 /* Transfer data to card */
1668 pkt_len = buf_block_len * blk_size;
1671 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1672 port, tx_param->next_pkt_len
1675 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1679 if (type == MWIFIEX_TYPE_CMD)
1680 adapter->cmd_sent = false;
1681 if (type == MWIFIEX_TYPE_DATA) {
1682 adapter->data_sent = false;
1683 /* restore curr_wr_port in error cases */
1684 card->curr_wr_port = port;
1685 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1688 if (type == MWIFIEX_TYPE_DATA) {
1689 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1690 adapter->data_sent = true;
1692 adapter->data_sent = false;
1700 * This function allocates the MPA Tx and Rx buffers.
1702 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1703 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1705 struct sdio_mmc_card *card = adapter->card;
1708 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1709 if (!card->mpa_tx.buf) {
1714 card->mpa_tx.buf_size = mpa_tx_buf_size;
1716 card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL);
1717 if (!card->mpa_rx.buf) {
1722 card->mpa_rx.buf_size = mpa_rx_buf_size;
1726 kfree(card->mpa_tx.buf);
1727 kfree(card->mpa_rx.buf);
1734 * This function unregisters the SDIO device.
1736 * The SDIO IRQ is released, the function is disabled and driver
1737 * data is set to null.
1740 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1742 struct sdio_mmc_card *card = adapter->card;
1744 if (adapter->card) {
1745 sdio_claim_host(card->func);
1746 sdio_disable_func(card->func);
1747 sdio_release_host(card->func);
1752 * This function registers the SDIO device.
1754 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1756 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1759 struct sdio_mmc_card *card = adapter->card;
1760 struct sdio_func *func = card->func;
1762 /* save adapter pointer in card */
1763 card->adapter = adapter;
1764 adapter->tx_buf_size = card->tx_buf_size;
1766 sdio_claim_host(func);
1768 /* Set block size */
1769 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1770 sdio_release_host(func);
1772 pr_err("cannot set SDIO block size\n");
1777 adapter->dev = &func->dev;
1779 strcpy(adapter->fw_name, card->firmware);
1785 * This function initializes the SDIO driver.
1787 * The following initializations steps are followed -
1788 * - Read the Host interrupt status register to acknowledge
1789 * the first interrupt got from bootloader
1790 * - Disable host interrupt mask register
1792 * - Initialize SDIO variables in card
1793 * - Allocate MP registers
1794 * - Allocate MPA Tx and Rx buffers
1796 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
1798 struct sdio_mmc_card *card = adapter->card;
1799 const struct mwifiex_sdio_card_reg *reg = card->reg;
1803 sdio_set_drvdata(card->func, card);
1806 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
1807 * from the bootloader. If we don't do this we get a interrupt
1808 * as soon as we register the irq.
1810 mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg);
1812 /* Get SDIO ioport */
1813 mwifiex_init_sdio_ioport(adapter);
1815 /* Initialize SDIO variables in card */
1816 card->mp_rd_bitmap = 0;
1817 card->mp_wr_bitmap = 0;
1818 card->curr_rd_port = reg->start_rd_port;
1819 card->curr_wr_port = reg->start_wr_port;
1821 card->mp_data_port_mask = reg->data_port_mask;
1823 card->mpa_tx.buf_len = 0;
1824 card->mpa_tx.pkt_cnt = 0;
1825 card->mpa_tx.start_port = 0;
1827 card->mpa_tx.enabled = 1;
1828 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1830 card->mpa_rx.buf_len = 0;
1831 card->mpa_rx.pkt_cnt = 0;
1832 card->mpa_rx.start_port = 0;
1834 card->mpa_rx.enabled = 1;
1835 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1837 /* Allocate buffers for SDIO MP-A */
1838 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
1842 /* Allocate skb pointer buffers */
1843 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
1844 card->mp_agg_pkt_limit, GFP_KERNEL);
1845 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
1846 card->mp_agg_pkt_limit, GFP_KERNEL);
1847 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
1848 card->mp_tx_agg_buf_size,
1849 card->mp_rx_agg_buf_size);
1851 dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n");
1852 kfree(card->mp_regs);
1860 * This function resets the MPA Tx and Rx buffers.
1862 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
1864 struct sdio_mmc_card *card = adapter->card;
1866 MP_TX_AGGR_BUF_RESET(card);
1867 MP_RX_AGGR_BUF_RESET(card);
1871 * This function cleans up the allocated card buffers.
1873 * The following are freed by this function -
1878 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
1880 struct sdio_mmc_card *card = adapter->card;
1882 kfree(card->mp_regs);
1883 kfree(card->mpa_rx.skb_arr);
1884 kfree(card->mpa_rx.len_arr);
1885 kfree(card->mpa_tx.buf);
1886 kfree(card->mpa_rx.buf);
1887 sdio_set_drvdata(card->func, NULL);
1892 * This function updates the MP end port in card.
1895 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
1897 struct sdio_mmc_card *card = adapter->card;
1898 const struct mwifiex_sdio_card_reg *reg = card->reg;
1901 card->mp_end_port = port;
1903 card->mp_data_port_mask = reg->data_port_mask;
1905 if (reg->start_wr_port) {
1906 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
1907 card->mp_data_port_mask &=
1908 ~(1 << (card->max_ports - i));
1911 card->curr_wr_port = reg->start_wr_port;
1913 dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n",
1914 port, card->mp_data_port_mask);
1917 static struct mmc_host *reset_host;
1918 static void sdio_card_reset_worker(struct work_struct *work)
1920 struct mmc_host *target = reset_host;
1922 /* The actual reset operation must be run outside of driver thread.
1923 * This is because mmc_remove_host() will cause the device to be
1924 * instantly destroyed, and the driver then needs to end its thread,
1925 * leading to a deadlock.
1927 * We run it in a totally independent workqueue.
1930 pr_err("Resetting card...\n");
1931 mmc_remove_host(target);
1932 /* 20ms delay is based on experiment with sdhci controller */
1934 mmc_add_host(target);
1936 static DECLARE_WORK(card_reset_work, sdio_card_reset_worker);
1938 /* This function resets the card */
1939 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
1941 struct sdio_mmc_card *card = adapter->card;
1943 reset_host = card->func->card->host;
1944 schedule_work(&card_reset_work);
1947 static struct mwifiex_if_ops sdio_ops = {
1948 .init_if = mwifiex_init_sdio,
1949 .cleanup_if = mwifiex_cleanup_sdio,
1950 .check_fw_status = mwifiex_check_fw_status,
1951 .prog_fw = mwifiex_prog_fw_w_helper,
1952 .register_dev = mwifiex_register_dev,
1953 .unregister_dev = mwifiex_unregister_dev,
1954 .enable_int = mwifiex_sdio_enable_host_int,
1955 .disable_int = mwifiex_sdio_disable_host_int,
1956 .process_int_status = mwifiex_process_int_status,
1957 .host_to_card = mwifiex_sdio_host_to_card,
1958 .wakeup = mwifiex_pm_wakeup_card,
1959 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
1962 .update_mp_end_port = mwifiex_update_mp_end_port,
1963 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
1964 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
1965 .event_complete = mwifiex_sdio_event_complete,
1966 .card_reset = mwifiex_sdio_card_reset,
1970 * This function initializes the SDIO driver.
1972 * This initiates the semaphore and registers the device with
1976 mwifiex_sdio_init_module(void)
1978 sema_init(&add_remove_card_sem, 1);
1980 /* Clear the flag in case user removes the card. */
1983 return sdio_register_driver(&mwifiex_sdio);
1987 * This function cleans up the SDIO driver.
1989 * The following major steps are followed for cleanup -
1990 * - Resume the device if its suspended
1991 * - Disconnect the device if connected
1992 * - Shutdown the firmware
1993 * - Unregister the device from SDIO bus.
1996 mwifiex_sdio_cleanup_module(void)
1998 if (!down_interruptible(&add_remove_card_sem))
1999 up(&add_remove_card_sem);
2001 /* Set the flag as user is removing this module. */
2004 cancel_work_sync(&card_reset_work);
2005 sdio_unregister_driver(&mwifiex_sdio);
2008 module_init(mwifiex_sdio_init_module);
2009 module_exit(mwifiex_sdio_cleanup_module);
2011 MODULE_AUTHOR("Marvell International Ltd.");
2012 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2013 MODULE_VERSION(SDIO_VERSION);
2014 MODULE_LICENSE("GPL v2");