2 * Marvell Wireless LAN device driver: SDIO specific handling
4 * Copyright (C) 2011-2014, 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;
50 static unsigned long iface_work_flags;
52 static struct semaphore add_remove_card_sem;
54 static struct memory_type_mapping generic_mem_type_map[] = {
55 {"DUMP", NULL, 0, 0xDD},
58 static struct memory_type_mapping mem_type_mapping_tbl[] = {
59 {"ITCM", NULL, 0, 0xF0},
60 {"DTCM", NULL, 0, 0xF1},
61 {"SQRAM", NULL, 0, 0xF2},
62 {"APU", NULL, 0, 0xF3},
63 {"CIU", NULL, 0, 0xF4},
64 {"ICU", NULL, 0, 0xF5},
65 {"MAC", NULL, 0, 0xF6},
66 {"EXT7", NULL, 0, 0xF7},
67 {"EXT8", NULL, 0, 0xF8},
68 {"EXT9", NULL, 0, 0xF9},
69 {"EXT10", NULL, 0, 0xFA},
70 {"EXT11", NULL, 0, 0xFB},
71 {"EXT12", NULL, 0, 0xFC},
72 {"EXT13", NULL, 0, 0xFD},
73 {"EXTLAST", NULL, 0, 0xFE},
76 static const struct of_device_id mwifiex_sdio_of_match_table[] = {
77 { .compatible = "marvell,sd8897" },
78 { .compatible = "marvell,sd8997" },
82 static irqreturn_t mwifiex_wake_irq_wifi(int irq, void *priv)
84 struct mwifiex_plt_wake_cfg *cfg = priv;
86 if (cfg->irq_wifi >= 0) {
87 pr_info("%s: wake by wifi", __func__);
88 cfg->wake_by_wifi = true;
89 disable_irq_nosync(irq);
95 /* This function parse device tree node using mmc subnode devicetree API.
96 * The device node is saved in card->plt_of_node.
97 * if the device tree node exist and include interrupts attributes, this
98 * function will also request platform specific wakeup interrupt.
100 static int mwifiex_sdio_probe_of(struct device *dev, struct sdio_mmc_card *card)
102 struct mwifiex_plt_wake_cfg *cfg;
105 if (!of_match_node(mwifiex_sdio_of_match_table, dev->of_node)) {
106 dev_err(dev, "required compatible string missing\n");
110 card->plt_of_node = dev->of_node;
111 card->plt_wake_cfg = devm_kzalloc(dev, sizeof(*card->plt_wake_cfg),
113 cfg = card->plt_wake_cfg;
114 if (cfg && card->plt_of_node) {
115 cfg->irq_wifi = irq_of_parse_and_map(card->plt_of_node, 0);
116 if (!cfg->irq_wifi) {
118 "fail to parse irq_wifi from device tree\n");
120 ret = devm_request_irq(dev, cfg->irq_wifi,
121 mwifiex_wake_irq_wifi,
126 "Failed to request irq_wifi %d (%d)\n",
128 card->plt_wake_cfg = NULL;
131 disable_irq(cfg->irq_wifi);
141 * This function probes an mwifiex device and registers it. It allocates
142 * the card structure, enables SDIO function number and initiates the
143 * device registration and initialization procedure by adding a logical
147 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
150 struct sdio_mmc_card *card = NULL;
152 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
153 func->vendor, func->device, func->class, func->num);
155 card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
160 card->device_id = id;
162 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
164 if (id->driver_data) {
165 struct mwifiex_sdio_device *data = (void *)id->driver_data;
167 card->firmware = data->firmware;
168 card->reg = data->reg;
169 card->max_ports = data->max_ports;
170 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
171 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
172 card->has_control_mask = data->has_control_mask;
173 card->tx_buf_size = data->tx_buf_size;
174 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
175 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
176 card->can_dump_fw = data->can_dump_fw;
177 card->fw_dump_enh = data->fw_dump_enh;
178 card->can_auto_tdls = data->can_auto_tdls;
179 card->can_ext_scan = data->can_ext_scan;
182 sdio_claim_host(func);
183 ret = sdio_enable_func(func);
184 sdio_release_host(func);
187 dev_err(&func->dev, "failed to enable function\n");
191 /* device tree node parsing and platform specific configuration*/
192 if (func->dev.of_node) {
193 ret = mwifiex_sdio_probe_of(&func->dev, card);
195 dev_err(&func->dev, "SDIO dt node parse failed\n");
200 ret = mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
203 dev_err(&func->dev, "add card failed\n");
210 sdio_claim_host(func);
211 sdio_disable_func(func);
212 sdio_release_host(func);
222 * Kernel needs to suspend all functions separately. Therefore all
223 * registered functions must have drivers with suspend and resume
224 * methods. Failing that the kernel simply removes the whole card.
226 * If already not resumed, this function turns on the traffic and
227 * sends a host sleep cancel request to the firmware.
229 static int mwifiex_sdio_resume(struct device *dev)
231 struct sdio_func *func = dev_to_sdio_func(dev);
232 struct sdio_mmc_card *card;
233 struct mwifiex_adapter *adapter;
234 mmc_pm_flag_t pm_flag = 0;
237 pm_flag = sdio_get_host_pm_caps(func);
238 card = sdio_get_drvdata(func);
239 if (!card || !card->adapter) {
240 pr_err("resume: invalid card or adapter\n");
244 pr_err("resume: sdio_func is not specified\n");
248 adapter = card->adapter;
250 if (!adapter->is_suspended) {
251 mwifiex_dbg(adapter, WARN,
252 "device already resumed\n");
256 adapter->is_suspended = false;
258 /* Disable Host Sleep */
259 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
262 /* Disable platform specific wakeup interrupt */
263 if (card->plt_wake_cfg && card->plt_wake_cfg->irq_wifi >= 0) {
264 disable_irq_wake(card->plt_wake_cfg->irq_wifi);
265 if (!card->plt_wake_cfg->wake_by_wifi)
266 disable_irq(card->plt_wake_cfg->irq_wifi);
275 * This function removes the interface and frees up the card structure.
278 mwifiex_sdio_remove(struct sdio_func *func)
280 struct sdio_mmc_card *card;
281 struct mwifiex_adapter *adapter;
282 struct mwifiex_private *priv;
284 card = sdio_get_drvdata(func);
288 adapter = card->adapter;
289 if (!adapter || !adapter->priv_num)
292 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
294 if (user_rmmod && !adapter->mfg_mode) {
295 if (adapter->is_suspended)
296 mwifiex_sdio_resume(adapter->dev);
298 mwifiex_deauthenticate_all(adapter);
300 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
301 mwifiex_disable_auto_ds(priv);
302 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
305 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
311 * Kernel needs to suspend all functions separately. Therefore all
312 * registered functions must have drivers with suspend and resume
313 * methods. Failing that the kernel simply removes the whole card.
315 * If already not suspended, this function allocates and sends a host
316 * sleep activate request to the firmware and turns off the traffic.
318 static int mwifiex_sdio_suspend(struct device *dev)
320 struct sdio_func *func = dev_to_sdio_func(dev);
321 struct sdio_mmc_card *card;
322 struct mwifiex_adapter *adapter;
323 mmc_pm_flag_t pm_flag = 0;
327 pm_flag = sdio_get_host_pm_caps(func);
328 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
329 sdio_func_id(func), pm_flag);
330 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
331 pr_err("%s: cannot remain alive while host is"
332 " suspended\n", sdio_func_id(func));
336 card = sdio_get_drvdata(func);
337 if (!card || !card->adapter) {
338 pr_err("suspend: invalid card or adapter\n");
342 pr_err("suspend: sdio_func is not specified\n");
346 adapter = card->adapter;
348 /* Enable platform specific wakeup interrupt */
349 if (card->plt_wake_cfg && card->plt_wake_cfg->irq_wifi >= 0) {
350 card->plt_wake_cfg->wake_by_wifi = false;
351 enable_irq(card->plt_wake_cfg->irq_wifi);
352 enable_irq_wake(card->plt_wake_cfg->irq_wifi);
355 /* Enable the Host Sleep */
356 if (!mwifiex_enable_hs(adapter)) {
357 mwifiex_dbg(adapter, ERROR,
358 "cmd: failed to suspend\n");
359 adapter->hs_enabling = false;
363 mwifiex_dbg(adapter, INFO,
364 "cmd: suspend with MMC_PM_KEEP_POWER\n");
365 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
367 /* Indicate device suspended */
368 adapter->is_suspended = true;
369 adapter->hs_enabling = false;
374 /* Device ID for SD8786 */
375 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
376 /* Device ID for SD8787 */
377 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
378 /* Device ID for SD8797 */
379 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
380 /* Device ID for SD8897 */
381 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
382 /* Device ID for SD8887 */
383 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135)
384 /* Device ID for SD8801 */
385 #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139)
386 /* Device ID for SD8997 */
387 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141)
391 static const struct sdio_device_id mwifiex_ids[] = {
392 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
393 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
394 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
395 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
396 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
397 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
398 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
399 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
400 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
401 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
402 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801),
403 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
404 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997),
405 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
409 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
411 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
412 .suspend = mwifiex_sdio_suspend,
413 .resume = mwifiex_sdio_resume,
416 static struct sdio_driver mwifiex_sdio = {
417 .name = "mwifiex_sdio",
418 .id_table = mwifiex_ids,
419 .probe = mwifiex_sdio_probe,
420 .remove = mwifiex_sdio_remove,
422 .owner = THIS_MODULE,
423 .pm = &mwifiex_sdio_pm_ops,
427 /* Write data into SDIO card register. Caller claims SDIO device. */
429 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
432 sdio_writeb(func, data, reg, &ret);
437 * This function writes data into SDIO card register.
440 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
442 struct sdio_mmc_card *card = adapter->card;
445 sdio_claim_host(card->func);
446 ret = mwifiex_write_reg_locked(card->func, reg, data);
447 sdio_release_host(card->func);
453 * This function reads data from SDIO card register.
456 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
458 struct sdio_mmc_card *card = adapter->card;
462 sdio_claim_host(card->func);
463 val = sdio_readb(card->func, reg, &ret);
464 sdio_release_host(card->func);
472 * This function writes multiple data into SDIO card memory.
474 * This does not work in suspended mode.
477 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
478 u8 *buffer, u32 pkt_len, u32 port)
480 struct sdio_mmc_card *card = adapter->card;
483 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
484 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
487 BLOCK_MODE) ? (pkt_len /
488 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
489 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
491 if (adapter->is_suspended) {
492 mwifiex_dbg(adapter, ERROR,
493 "%s: not allowed while suspended\n", __func__);
497 sdio_claim_host(card->func);
499 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
501 sdio_release_host(card->func);
507 * This function reads multiple data from SDIO card memory.
509 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
510 u32 len, u32 port, u8 claim)
512 struct sdio_mmc_card *card = adapter->card;
514 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
516 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
517 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
519 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
522 sdio_claim_host(card->func);
524 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
527 sdio_release_host(card->func);
533 * This function wakes up the card.
535 * A host power up command is written to the card configuration
536 * register to wake up the card.
538 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
540 mwifiex_dbg(adapter, EVENT,
541 "event: wakeup device...\n");
543 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
547 * This function is called after the card has woken up.
549 * The card configuration register is reset.
551 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
553 mwifiex_dbg(adapter, EVENT,
554 "cmd: wakeup device completed\n");
556 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
559 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter,
560 struct mwifiex_fw_image *fw)
562 struct sdio_mmc_card *card = adapter->card;
565 sdio_claim_host(card->func);
566 ret = mwifiex_dnld_fw(adapter, fw);
567 sdio_release_host(card->func);
573 * This function is used to initialize IO ports for the
574 * chipsets supporting SDIO new mode eg SD8897.
576 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
579 struct sdio_mmc_card *card = adapter->card;
581 adapter->ioport = MEM_PORT;
583 /* enable sdio new mode */
584 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®))
586 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
587 reg | CMD53_NEW_MODE))
590 /* Configure cmd port and enable reading rx length from the register */
591 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®))
593 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
594 reg | CMD_PORT_RD_LEN_EN))
597 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
600 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®))
602 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
603 reg | CMD_PORT_AUTO_EN))
609 /* This function initializes the IO ports.
611 * The following operations are performed -
612 * - Read the IO ports (0, 1 and 2)
613 * - Set host interrupt Reset-To-Read to clear
614 * - Set auto re-enable interrupt
616 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
619 struct sdio_mmc_card *card = adapter->card;
623 if (card->supports_sdio_new_mode) {
624 if (mwifiex_init_sdio_new_mode(adapter))
629 /* Read the IO port */
630 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®))
631 adapter->ioport |= (reg & 0xff);
635 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®))
636 adapter->ioport |= ((reg & 0xff) << 8);
640 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®))
641 adapter->ioport |= ((reg & 0xff) << 16);
645 mwifiex_dbg(adapter, INFO,
646 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
648 /* Set Host interrupt reset to read to clear */
649 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®))
650 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
651 reg | card->reg->sdio_int_mask);
655 /* Dnld/Upld ready set to auto reset */
656 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
657 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
658 reg | AUTO_RE_ENABLE_INT);
666 * This function sends data to the card.
668 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
669 u8 *payload, u32 pkt_len, u32 port)
675 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
678 mwifiex_dbg(adapter, ERROR,
679 "host_to_card, write iomem\t"
680 "(%d) failed: %d\n", i, ret);
681 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
682 mwifiex_dbg(adapter, ERROR,
683 "write CFG reg failed\n");
686 if (i > MAX_WRITE_IOMEM_RETRY)
695 * This function gets the read port.
697 * If control port bit is set in MP read bitmap, the control port
698 * is returned, otherwise the current read port is returned and
699 * the value is increased (provided it does not reach the maximum
700 * limit, in which case it is reset to 1)
702 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
704 struct sdio_mmc_card *card = adapter->card;
705 const struct mwifiex_sdio_card_reg *reg = card->reg;
706 u32 rd_bitmap = card->mp_rd_bitmap;
708 mwifiex_dbg(adapter, DATA,
709 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
711 if (card->supports_sdio_new_mode) {
712 if (!(rd_bitmap & reg->data_port_mask))
715 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
719 if ((card->has_control_mask) &&
720 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
721 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
723 mwifiex_dbg(adapter, DATA,
724 "data: port=%d mp_rd_bitmap=0x%08x\n",
725 *port, card->mp_rd_bitmap);
729 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
732 /* We are now handling the SDIO data ports */
733 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
734 *port = card->curr_rd_port;
736 if (++card->curr_rd_port == card->max_ports)
737 card->curr_rd_port = reg->start_rd_port;
739 mwifiex_dbg(adapter, DATA,
740 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
741 *port, rd_bitmap, card->mp_rd_bitmap);
747 * This function gets the write port for data.
749 * The current write port is returned if available and the value is
750 * increased (provided it does not reach the maximum limit, in which
751 * case it is reset to 1)
753 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
755 struct sdio_mmc_card *card = adapter->card;
756 const struct mwifiex_sdio_card_reg *reg = card->reg;
757 u32 wr_bitmap = card->mp_wr_bitmap;
759 mwifiex_dbg(adapter, DATA,
760 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
762 if (!(wr_bitmap & card->mp_data_port_mask)) {
763 adapter->data_sent = true;
767 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
768 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
769 *port = card->curr_wr_port;
770 if (++card->curr_wr_port == card->mp_end_port)
771 card->curr_wr_port = reg->start_wr_port;
773 adapter->data_sent = true;
777 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
778 mwifiex_dbg(adapter, ERROR,
779 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
780 *port, card->curr_wr_port, wr_bitmap,
785 mwifiex_dbg(adapter, DATA,
786 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
787 *port, wr_bitmap, card->mp_wr_bitmap);
793 * This function polls the card status.
796 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
798 struct sdio_mmc_card *card = adapter->card;
802 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
803 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
805 else if ((cs & bits) == bits)
808 usleep_range(10, 20);
811 mwifiex_dbg(adapter, ERROR,
812 "poll card status failed, tries = %d\n", tries);
818 * This function reads the firmware status.
821 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
823 struct sdio_mmc_card *card = adapter->card;
824 const struct mwifiex_sdio_card_reg *reg = card->reg;
827 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
830 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
833 *dat = (u16) ((fws1 << 8) | fws0);
839 * This function disables the host interrupt.
841 * The host interrupt mask is read, the disable bit is reset and
842 * written back to the card host interrupt mask register.
844 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
846 struct sdio_mmc_card *card = adapter->card;
847 struct sdio_func *func = card->func;
849 sdio_claim_host(func);
850 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
851 sdio_release_irq(func);
852 sdio_release_host(func);
856 * This function reads the interrupt status from card.
858 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
860 struct sdio_mmc_card *card = adapter->card;
864 if (mwifiex_read_data_sync(adapter, card->mp_regs,
865 card->reg->max_mp_regs,
866 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
867 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
871 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
874 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
875 * For SDIO new mode CMD port interrupts
876 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
877 * UP_LD_CMD_PORT_HOST_INT_STATUS
878 * Clear the interrupt status register
880 mwifiex_dbg(adapter, INTR,
881 "int: sdio_ireg = %#x\n", sdio_ireg);
882 spin_lock_irqsave(&adapter->int_lock, flags);
883 adapter->int_status |= sdio_ireg;
884 spin_unlock_irqrestore(&adapter->int_lock, flags);
889 * SDIO interrupt handler.
891 * This function reads the interrupt status from firmware and handles
892 * the interrupt in current thread (ksdioirqd) right away.
895 mwifiex_sdio_interrupt(struct sdio_func *func)
897 struct mwifiex_adapter *adapter;
898 struct sdio_mmc_card *card;
900 card = sdio_get_drvdata(func);
901 if (!card || !card->adapter) {
902 pr_err("int: func=%p card=%p adapter=%p\n",
903 func, card, card ? card->adapter : NULL);
906 adapter = card->adapter;
908 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
909 adapter->ps_state = PS_STATE_AWAKE;
911 mwifiex_interrupt_status(adapter);
912 mwifiex_main_process(adapter);
916 * This function enables the host interrupt.
918 * The host interrupt enable mask is written to the card
919 * host interrupt mask register.
921 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
923 struct sdio_mmc_card *card = adapter->card;
924 struct sdio_func *func = card->func;
927 sdio_claim_host(func);
929 /* Request the SDIO IRQ */
930 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
932 mwifiex_dbg(adapter, ERROR,
933 "claim irq failed: ret=%d\n", ret);
937 /* Simply write the mask to the register */
938 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
939 card->reg->host_int_enable);
941 mwifiex_dbg(adapter, ERROR,
942 "enable host interrupt failed\n");
943 sdio_release_irq(func);
947 sdio_release_host(func);
952 * This function sends a data buffer to the card.
954 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
955 u32 *type, u8 *buffer,
956 u32 npayload, u32 ioport)
962 mwifiex_dbg(adapter, ERROR,
963 "%s: buffer is NULL\n", __func__);
967 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
970 mwifiex_dbg(adapter, ERROR,
971 "%s: read iomem failed: %d\n", __func__,
976 nb = le16_to_cpu(*(__le16 *) (buffer));
978 mwifiex_dbg(adapter, ERROR,
979 "%s: invalid packet, nb=%d npayload=%d\n",
980 __func__, nb, npayload);
984 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
990 * This function downloads the firmware to the card.
992 * Firmware is downloaded to the card in blocks. Every block download
993 * is tested for CRC errors, and retried a number of times before
996 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
997 struct mwifiex_fw_image *fw)
999 struct sdio_mmc_card *card = adapter->card;
1000 const struct mwifiex_sdio_card_reg *reg = card->reg;
1002 u8 *firmware = fw->fw_buf;
1003 u32 firmware_len = fw->fw_len;
1008 u32 txlen, tx_blocks = 0, tries;
1011 if (!firmware_len) {
1012 mwifiex_dbg(adapter, ERROR,
1013 "firmware image not found! Terminating download\n");
1017 mwifiex_dbg(adapter, INFO,
1018 "info: downloading FW image (%d bytes)\n",
1021 /* Assume that the allocated buffer is 8-byte aligned */
1022 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
1026 sdio_claim_host(card->func);
1028 /* Perform firmware data transfer */
1030 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
1032 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
1035 mwifiex_dbg(adapter, ERROR,
1036 "FW download with helper:\t"
1037 "poll status timeout @ %d\n", offset);
1042 if (offset >= firmware_len)
1045 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1046 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
1049 mwifiex_dbg(adapter, ERROR,
1050 "dev BASE0 register read failed:\t"
1051 "base0=%#04X(%d). Terminating dnld\n",
1055 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
1058 mwifiex_dbg(adapter, ERROR,
1059 "dev BASE1 register read failed:\t"
1060 "base1=%#04X(%d). Terminating dnld\n",
1064 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
1069 usleep_range(10, 20);
1074 } else if (len > MWIFIEX_UPLD_SIZE) {
1075 mwifiex_dbg(adapter, ERROR,
1076 "FW dnld failed @ %d, invalid length %d\n",
1086 if (i > MAX_WRITE_IOMEM_RETRY) {
1087 mwifiex_dbg(adapter, ERROR,
1088 "FW dnld failed @ %d, over max retry\n",
1093 mwifiex_dbg(adapter, ERROR,
1094 "CRC indicated by the helper:\t"
1095 "len = 0x%04X, txlen = %d\n", len, txlen);
1097 /* Setting this to 0 to resend from same offset */
1102 /* Set blocksize to transfer - checking for last
1104 if (firmware_len - offset < txlen)
1105 txlen = firmware_len - offset;
1107 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1108 / MWIFIEX_SDIO_BLOCK_SIZE;
1110 /* Copy payload to buffer */
1111 memmove(fwbuf, &firmware[offset], txlen);
1114 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
1115 MWIFIEX_SDIO_BLOCK_SIZE,
1118 mwifiex_dbg(adapter, ERROR,
1119 "FW download, write iomem (%d) failed @ %d\n",
1121 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1122 mwifiex_dbg(adapter, ERROR,
1123 "write CFG reg failed\n");
1132 mwifiex_dbg(adapter, MSG,
1133 "info: FW download over, size %d bytes\n", offset);
1137 sdio_release_host(card->func);
1143 * This function checks the firmware status in card.
1145 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
1152 for (tries = 0; tries < poll_num; tries++) {
1153 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
1156 if (firmware_stat == FIRMWARE_READY_SDIO) {
1168 /* This function checks if WLAN is the winner.
1170 static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter)
1174 struct sdio_mmc_card *card = adapter->card;
1176 if (mwifiex_read_reg(adapter, card->reg->status_reg_0, &winner))
1180 adapter->winner = 0;
1182 adapter->winner = 1;
1188 * This function decode sdio aggreation pkt.
1190 * Based on the the data block size and pkt_len,
1191 * skb data will be decoded to few packets.
1193 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1194 struct sk_buff *skb)
1196 u32 total_pkt_len, pkt_len;
1197 struct sk_buff *skb_deaggr;
1204 total_pkt_len = skb->len;
1206 while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) {
1207 if (total_pkt_len < adapter->sdio_rx_block_size)
1209 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1210 blk_size = adapter->sdio_rx_block_size * blk_num;
1211 if (blk_size > total_pkt_len) {
1212 mwifiex_dbg(adapter, ERROR,
1213 "%s: error in blk_size,\t"
1214 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1215 __func__, blk_num, blk_size, total_pkt_len);
1218 pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET));
1219 pkt_type = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET +
1221 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1222 mwifiex_dbg(adapter, ERROR,
1223 "%s: error in pkt_len,\t"
1224 "pkt_len=%d, blk_size=%d\n",
1225 __func__, pkt_len, blk_size);
1229 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL);
1232 skb_put(skb_deaggr, pkt_len);
1233 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1234 skb_pull(skb_deaggr, INTF_HEADER_LEN);
1236 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1238 total_pkt_len -= blk_size;
1243 * This function decodes a received packet.
1245 * Based on the type, the packet is treated as either a data, or
1246 * a command response, or an event, and the correct handler
1247 * function is invoked.
1249 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1250 struct sk_buff *skb, u32 upld_typ)
1253 __le16 *curr_ptr = (__le16 *)skb->data;
1254 u16 pkt_len = le16_to_cpu(*curr_ptr);
1255 struct mwifiex_rxinfo *rx_info;
1257 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1258 skb_trim(skb, pkt_len);
1259 skb_pull(skb, INTF_HEADER_LEN);
1263 case MWIFIEX_TYPE_AGGR_DATA:
1264 mwifiex_dbg(adapter, INFO,
1265 "info: --- Rx: Aggr Data packet ---\n");
1266 rx_info = MWIFIEX_SKB_RXCB(skb);
1267 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1268 if (adapter->rx_work_enabled) {
1269 skb_queue_tail(&adapter->rx_data_q, skb);
1270 atomic_inc(&adapter->rx_pending);
1271 adapter->data_received = true;
1273 mwifiex_deaggr_sdio_pkt(adapter, skb);
1274 dev_kfree_skb_any(skb);
1278 case MWIFIEX_TYPE_DATA:
1279 mwifiex_dbg(adapter, DATA,
1280 "info: --- Rx: Data packet ---\n");
1281 if (adapter->rx_work_enabled) {
1282 skb_queue_tail(&adapter->rx_data_q, skb);
1283 adapter->data_received = true;
1284 atomic_inc(&adapter->rx_pending);
1286 mwifiex_handle_rx_packet(adapter, skb);
1290 case MWIFIEX_TYPE_CMD:
1291 mwifiex_dbg(adapter, CMD,
1292 "info: --- Rx: Cmd Response ---\n");
1293 /* take care of curr_cmd = NULL case */
1294 if (!adapter->curr_cmd) {
1295 cmd_buf = adapter->upld_buf;
1297 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1298 mwifiex_process_sleep_confirm_resp(adapter,
1302 memcpy(cmd_buf, skb->data,
1303 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1306 dev_kfree_skb_any(skb);
1308 adapter->cmd_resp_received = true;
1309 adapter->curr_cmd->resp_skb = skb;
1313 case MWIFIEX_TYPE_EVENT:
1314 mwifiex_dbg(adapter, EVENT,
1315 "info: --- Rx: Event ---\n");
1316 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
1318 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1319 memcpy(adapter->event_body,
1320 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1323 /* event cause has been saved to adapter->event_cause */
1324 adapter->event_received = true;
1325 adapter->event_skb = skb;
1330 mwifiex_dbg(adapter, ERROR,
1331 "unknown upload type %#x\n", upld_typ);
1332 dev_kfree_skb_any(skb);
1340 * This function transfers received packets from card to driver, performing
1341 * aggregation if required.
1343 * For data received on control port, or if aggregation is disabled, the
1344 * received buffers are uploaded as separate packets. However, if aggregation
1345 * is enabled and required, the buffers are copied onto an aggregation buffer,
1346 * provided there is space left, processed and finally uploaded.
1348 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1349 u16 rx_len, u8 port)
1351 struct sdio_mmc_card *card = adapter->card;
1352 s32 f_do_rx_aggr = 0;
1353 s32 f_do_rx_cur = 0;
1355 s32 f_post_aggr_cur = 0;
1356 struct sk_buff *skb_deaggr;
1357 struct sk_buff *skb = NULL;
1358 u32 pkt_len, pkt_type, mport, pind;
1361 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1362 /* Read the command Resp without aggr */
1363 mwifiex_dbg(adapter, CMD,
1364 "info: %s: no aggregation for cmd\t"
1365 "response\n", __func__);
1368 goto rx_curr_single;
1371 if (!card->mpa_rx.enabled) {
1372 mwifiex_dbg(adapter, WARN,
1373 "info: %s: rx aggregation disabled\n",
1377 goto rx_curr_single;
1380 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1381 card->reg->data_port_mask)) ||
1382 (card->has_control_mask && (card->mp_rd_bitmap &
1383 (~((u32) CTRL_PORT_MASK))))) {
1384 /* Some more data RX pending */
1385 mwifiex_dbg(adapter, INFO,
1386 "info: %s: not last packet\n", __func__);
1388 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1389 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1392 /* No room in Aggr buf, do rx aggr now */
1394 f_post_aggr_cur = 1;
1397 /* Rx aggr not in progress */
1402 /* No more data RX pending */
1403 mwifiex_dbg(adapter, INFO,
1404 "info: %s: last packet\n", __func__);
1406 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1408 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1411 /* No room in Aggr buf, do rx aggr now */
1419 mwifiex_dbg(adapter, INFO,
1420 "info: current packet aggregation\n");
1421 /* Curr pkt can be aggregated */
1422 mp_rx_aggr_setup(card, rx_len, port);
1424 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1425 mp_rx_aggr_port_limit_reached(card)) {
1426 mwifiex_dbg(adapter, INFO,
1427 "info: %s: aggregated packet\t"
1428 "limit reached\n", __func__);
1429 /* No more pkts allowed in Aggr buf, rx it */
1435 /* do aggr RX now */
1436 mwifiex_dbg(adapter, DATA,
1437 "info: do_rx_aggr: num of packets: %d\n",
1438 card->mpa_rx.pkt_cnt);
1440 if (card->supports_sdio_new_mode) {
1444 for (i = 0, port_count = 0; i < card->max_ports; i++)
1445 if (card->mpa_rx.ports & BIT(i))
1448 /* Reading data from "start_port + 0" to "start_port +
1449 * port_count -1", so decrease the count by 1
1452 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1453 (port_count << 8)) + card->mpa_rx.start_port;
1455 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1456 (card->mpa_rx.ports << 4)) +
1457 card->mpa_rx.start_port;
1460 if (card->mpa_rx.pkt_cnt == 1)
1461 mport = adapter->ioport + card->mpa_rx.start_port;
1463 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1464 card->mpa_rx.buf_len, mport, 1))
1467 curr_ptr = card->mpa_rx.buf;
1469 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1470 u32 *len_arr = card->mpa_rx.len_arr;
1472 /* get curr PKT len & type */
1473 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1474 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
1476 /* copy pkt to deaggr buf */
1477 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1480 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1481 "drop pkt len=%d type=%d\n",
1483 curr_ptr += len_arr[pind];
1487 skb_put(skb_deaggr, len_arr[pind]);
1489 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1490 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1491 adapter->sdio_rx_aggr_enable)) &&
1492 (pkt_len <= len_arr[pind])) {
1494 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1496 skb_trim(skb_deaggr, pkt_len);
1498 /* Process de-aggr packet */
1499 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1502 mwifiex_dbg(adapter, ERROR,
1503 "drop wrong aggr pkt:\t"
1504 "sdio_single_port_rx_aggr=%d\t"
1505 "type=%d len=%d max_len=%d\n",
1506 adapter->sdio_rx_aggr_enable,
1507 pkt_type, pkt_len, len_arr[pind]);
1508 dev_kfree_skb_any(skb_deaggr);
1510 curr_ptr += len_arr[pind];
1512 MP_RX_AGGR_BUF_RESET(card);
1517 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1520 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1522 mwifiex_dbg(adapter, ERROR,
1523 "single skb allocated fail,\t"
1524 "drop pkt port=%d len=%d\n", port, rx_len);
1525 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1526 card->mpa_rx.buf, rx_len,
1527 adapter->ioport + port))
1532 skb_put(skb, rx_len);
1534 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1535 skb->data, skb->len,
1536 adapter->ioport + port))
1538 if (!adapter->sdio_rx_aggr_enable &&
1539 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1540 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1541 "current SDIO RX Aggr not enabled\n",
1543 dev_kfree_skb_any(skb);
1547 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1549 if (f_post_aggr_cur) {
1550 mwifiex_dbg(adapter, INFO,
1551 "info: current packet aggregation\n");
1552 /* Curr pkt can be aggregated */
1553 mp_rx_aggr_setup(card, rx_len, port);
1558 if (MP_RX_AGGR_IN_PROGRESS(card))
1559 MP_RX_AGGR_BUF_RESET(card);
1561 if (f_do_rx_cur && skb)
1562 /* Single transfer pending. Free curr buff also */
1563 dev_kfree_skb_any(skb);
1569 * This function checks the current interrupt status.
1571 * The following interrupts are checked and handled by this function -
1574 * - Packets received
1576 * Since the firmware does not generate download ready interrupt if the
1577 * port updated is command port only, command sent interrupt checking
1578 * should be done manually, and for every SDIO interrupt.
1580 * In case of Rx packets received, the packets are uploaded from card to
1581 * host and processed accordingly.
1583 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1585 struct sdio_mmc_card *card = adapter->card;
1586 const struct mwifiex_sdio_card_reg *reg = card->reg;
1589 struct sk_buff *skb;
1590 u8 port = CTRL_PORT;
1591 u32 len_reg_l, len_reg_u;
1594 unsigned long flags;
1598 spin_lock_irqsave(&adapter->int_lock, flags);
1599 sdio_ireg = adapter->int_status;
1600 adapter->int_status = 0;
1601 spin_unlock_irqrestore(&adapter->int_lock, flags);
1606 /* Following interrupt is only for SDIO new mode */
1607 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1608 adapter->cmd_sent = false;
1610 /* Following interrupt is only for SDIO new mode */
1611 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1614 /* read the len of control packet */
1615 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1616 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1617 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1618 if (rx_len <= INTF_HEADER_LEN ||
1619 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1620 MWIFIEX_RX_DATA_BUF_SIZE)
1622 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1623 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1625 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1629 skb_put(skb, rx_len);
1631 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1632 skb->len, adapter->ioport |
1634 mwifiex_dbg(adapter, ERROR,
1635 "%s: failed to card_to_host", __func__);
1636 dev_kfree_skb_any(skb);
1640 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1641 (pkt_type != MWIFIEX_TYPE_EVENT))
1642 mwifiex_dbg(adapter, ERROR,
1643 "%s:Received wrong packet on cmd port",
1646 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1649 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1650 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1651 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1652 if (card->supports_sdio_new_mode) {
1654 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1656 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1658 card->mp_wr_bitmap = bitmap;
1660 mwifiex_dbg(adapter, INTR,
1661 "int: DNLD: wr_bitmap=0x%x\n",
1662 card->mp_wr_bitmap);
1663 if (adapter->data_sent &&
1664 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1665 mwifiex_dbg(adapter, INTR,
1666 "info: <--- Tx DONE Interrupt --->\n");
1667 adapter->data_sent = false;
1671 /* As firmware will not generate download ready interrupt if the port
1672 updated is command port only, cmd_sent should be done for any SDIO
1674 if (card->has_control_mask && adapter->cmd_sent) {
1675 /* Check if firmware has attach buffer at command port and
1676 update just that in wr_bit_map. */
1677 card->mp_wr_bitmap |=
1678 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1679 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1680 adapter->cmd_sent = false;
1683 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
1684 adapter->cmd_sent, adapter->data_sent);
1685 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1686 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1687 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1688 if (card->supports_sdio_new_mode) {
1690 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1692 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1694 card->mp_rd_bitmap = bitmap;
1695 mwifiex_dbg(adapter, INTR,
1696 "int: UPLD: rd_bitmap=0x%x\n",
1697 card->mp_rd_bitmap);
1700 ret = mwifiex_get_rd_port(adapter, &port);
1702 mwifiex_dbg(adapter, INFO,
1703 "info: no more rd_port available\n");
1706 len_reg_l = reg->rd_len_p0_l + (port << 1);
1707 len_reg_u = reg->rd_len_p0_u + (port << 1);
1708 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1709 rx_len |= (u16) card->mp_regs[len_reg_l];
1710 mwifiex_dbg(adapter, INFO,
1711 "info: RX: port=%d rx_len=%u\n",
1714 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1715 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1716 if (rx_len <= INTF_HEADER_LEN ||
1717 (card->mpa_rx.enabled &&
1718 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1719 card->mpa_rx.buf_size))) {
1720 mwifiex_dbg(adapter, ERROR,
1721 "invalid rx_len=%d\n",
1726 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1727 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
1730 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
1732 mwifiex_dbg(adapter, ERROR,
1733 "card_to_host_mpa failed: int status=%#x\n",
1744 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1745 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
1747 mwifiex_dbg(adapter, INFO,
1748 "info: CFG reg val = %d\n", cr);
1750 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1751 mwifiex_dbg(adapter, ERROR,
1752 "write CFG reg failed\n");
1754 mwifiex_dbg(adapter, INFO, "info: write success\n");
1756 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1757 mwifiex_dbg(adapter, ERROR,
1758 "read CFG reg failed\n");
1760 mwifiex_dbg(adapter, INFO,
1761 "info: CFG reg val =%x\n", cr);
1767 * This function aggregates transmission buffers in driver and downloads
1768 * the aggregated packet to card.
1770 * The individual packets are aggregated by copying into an aggregation
1771 * buffer and then downloaded to the card. Previous unsent packets in the
1772 * aggregation buffer are pre-copied first before new packets are added.
1773 * Aggregation is done till there is space left in the aggregation buffer,
1774 * or till new packets are available.
1776 * The function will only download the packet to the card when aggregation
1777 * stops, otherwise it will just aggregate the packet in aggregation buffer
1780 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1781 u8 *payload, u32 pkt_len, u32 port,
1784 struct sdio_mmc_card *card = adapter->card;
1786 s32 f_send_aggr_buf = 0;
1787 s32 f_send_cur_buf = 0;
1788 s32 f_precopy_cur_buf = 0;
1789 s32 f_postcopy_cur_buf = 0;
1793 if (!card->mpa_tx.enabled ||
1794 (card->has_control_mask && (port == CTRL_PORT)) ||
1795 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1796 mwifiex_dbg(adapter, WARN,
1797 "info: %s: tx aggregation disabled\n",
1801 goto tx_curr_single;
1805 /* More pkt in TX queue */
1806 mwifiex_dbg(adapter, INFO,
1807 "info: %s: more packets in queue.\n",
1810 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1811 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1812 f_precopy_cur_buf = 1;
1814 if (!(card->mp_wr_bitmap &
1815 (1 << card->curr_wr_port)) ||
1816 !MP_TX_AGGR_BUF_HAS_ROOM(
1817 card, pkt_len + next_pkt_len))
1818 f_send_aggr_buf = 1;
1820 /* No room in Aggr buf, send it */
1821 f_send_aggr_buf = 1;
1823 if (!(card->mp_wr_bitmap &
1824 (1 << card->curr_wr_port)))
1827 f_postcopy_cur_buf = 1;
1830 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1831 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1832 f_precopy_cur_buf = 1;
1837 /* Last pkt in TX queue */
1838 mwifiex_dbg(adapter, INFO,
1839 "info: %s: Last packet in Tx Queue.\n",
1842 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1843 /* some packs in Aggr buf already */
1844 f_send_aggr_buf = 1;
1846 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1847 f_precopy_cur_buf = 1;
1849 /* No room in Aggr buf, send it */
1856 if (f_precopy_cur_buf) {
1857 mwifiex_dbg(adapter, DATA,
1858 "data: %s: precopy current buffer\n",
1860 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1862 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1863 mp_tx_aggr_port_limit_reached(card))
1864 /* No more pkts allowed in Aggr buf, send it */
1865 f_send_aggr_buf = 1;
1868 if (f_send_aggr_buf) {
1869 mwifiex_dbg(adapter, DATA,
1870 "data: %s: send aggr buffer: %d %d\n",
1871 __func__, card->mpa_tx.start_port,
1872 card->mpa_tx.ports);
1873 if (card->supports_sdio_new_mode) {
1877 for (i = 0, port_count = 0; i < card->max_ports; i++)
1878 if (card->mpa_tx.ports & BIT(i))
1881 /* Writing data from "start_port + 0" to "start_port +
1882 * port_count -1", so decrease the count by 1
1885 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1886 (port_count << 8)) + card->mpa_tx.start_port;
1888 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1889 (card->mpa_tx.ports << 4)) +
1890 card->mpa_tx.start_port;
1893 if (card->mpa_tx.pkt_cnt == 1)
1894 mport = adapter->ioport + card->mpa_tx.start_port;
1896 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1897 card->mpa_tx.buf_len, mport);
1899 /* Save the last multi port tx aggreagation info to debug log */
1900 index = adapter->dbg.last_sdio_mp_index;
1901 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM;
1902 adapter->dbg.last_sdio_mp_index = index;
1903 adapter->dbg.last_mp_wr_ports[index] = mport;
1904 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
1905 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
1906 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
1908 MP_TX_AGGR_BUF_RESET(card);
1912 if (f_send_cur_buf) {
1913 mwifiex_dbg(adapter, DATA,
1914 "data: %s: send current buffer %d\n",
1916 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1917 adapter->ioport + port);
1920 if (f_postcopy_cur_buf) {
1921 mwifiex_dbg(adapter, DATA,
1922 "data: %s: postcopy current buffer\n",
1924 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1931 * This function downloads data from driver to card.
1933 * Both commands and data packets are transferred to the card by this
1936 * This function adds the SDIO specific header to the front of the buffer
1937 * before transferring. The header contains the length of the packet and
1938 * the type. The firmware handles the packets based upon this set type.
1940 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1941 u8 type, struct sk_buff *skb,
1942 struct mwifiex_tx_param *tx_param)
1944 struct sdio_mmc_card *card = adapter->card;
1948 u32 port = CTRL_PORT;
1949 u8 *payload = (u8 *)skb->data;
1950 u32 pkt_len = skb->len;
1952 /* Allocate buffer and copy payload */
1953 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1954 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1955 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1956 *(__le16 *)&payload[2] = cpu_to_le16(type);
1959 * This is SDIO specific header
1961 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1962 * MWIFIEX_TYPE_EVENT = 3)
1964 if (type == MWIFIEX_TYPE_DATA) {
1965 ret = mwifiex_get_wr_port_data(adapter, &port);
1967 mwifiex_dbg(adapter, ERROR,
1968 "%s: no wr_port available\n",
1973 adapter->cmd_sent = true;
1974 /* Type must be MWIFIEX_TYPE_CMD */
1976 if (pkt_len <= INTF_HEADER_LEN ||
1977 pkt_len > MWIFIEX_UPLD_SIZE)
1978 mwifiex_dbg(adapter, ERROR,
1979 "%s: payload=%p, nb=%d\n",
1980 __func__, payload, pkt_len);
1982 if (card->supports_sdio_new_mode)
1983 port = CMD_PORT_SLCT;
1986 /* Transfer data to card */
1987 pkt_len = buf_block_len * blk_size;
1990 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1991 port, tx_param->next_pkt_len
1994 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1998 if (type == MWIFIEX_TYPE_CMD)
1999 adapter->cmd_sent = false;
2000 if (type == MWIFIEX_TYPE_DATA) {
2001 adapter->data_sent = false;
2002 /* restore curr_wr_port in error cases */
2003 card->curr_wr_port = port;
2004 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
2007 if (type == MWIFIEX_TYPE_DATA) {
2008 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
2009 adapter->data_sent = true;
2011 adapter->data_sent = false;
2019 * This function allocates the MPA Tx and Rx buffers.
2021 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
2022 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
2024 struct sdio_mmc_card *card = adapter->card;
2028 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
2029 if (!card->mpa_tx.buf) {
2034 card->mpa_tx.buf_size = mpa_tx_buf_size;
2036 rx_buf_size = max_t(u32, mpa_rx_buf_size,
2037 (u32)SDIO_MAX_AGGR_BUF_SIZE);
2038 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
2039 if (!card->mpa_rx.buf) {
2044 card->mpa_rx.buf_size = rx_buf_size;
2048 kfree(card->mpa_tx.buf);
2049 kfree(card->mpa_rx.buf);
2050 card->mpa_tx.buf_size = 0;
2051 card->mpa_rx.buf_size = 0;
2052 card->mpa_tx.buf = NULL;
2053 card->mpa_rx.buf = NULL;
2060 * This function unregisters the SDIO device.
2062 * The SDIO IRQ is released, the function is disabled and driver
2063 * data is set to null.
2066 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
2068 struct sdio_mmc_card *card = adapter->card;
2070 if (adapter->card) {
2071 sdio_claim_host(card->func);
2072 sdio_disable_func(card->func);
2073 sdio_release_host(card->func);
2078 * This function registers the SDIO device.
2080 * SDIO IRQ is claimed, block size is set and driver data is initialized.
2082 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
2085 struct sdio_mmc_card *card = adapter->card;
2086 struct sdio_func *func = card->func;
2088 /* save adapter pointer in card */
2089 card->adapter = adapter;
2090 adapter->tx_buf_size = card->tx_buf_size;
2092 sdio_claim_host(func);
2094 /* Set block size */
2095 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
2096 sdio_release_host(func);
2098 mwifiex_dbg(adapter, ERROR,
2099 "cannot set SDIO block size\n");
2104 adapter->dev = &func->dev;
2106 strcpy(adapter->fw_name, card->firmware);
2107 if (card->fw_dump_enh) {
2108 adapter->mem_type_mapping_tbl = generic_mem_type_map;
2109 adapter->num_mem_types = 1;
2111 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
2112 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
2119 * This function initializes the SDIO driver.
2121 * The following initializations steps are followed -
2122 * - Read the Host interrupt status register to acknowledge
2123 * the first interrupt got from bootloader
2124 * - Disable host interrupt mask register
2126 * - Initialize SDIO variables in card
2127 * - Allocate MP registers
2128 * - Allocate MPA Tx and Rx buffers
2130 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2132 struct sdio_mmc_card *card = adapter->card;
2133 const struct mwifiex_sdio_card_reg *reg = card->reg;
2137 sdio_set_drvdata(card->func, card);
2140 * Read the host_int_status_reg for ACK the first interrupt got
2141 * from the bootloader. If we don't do this we get a interrupt
2142 * as soon as we register the irq.
2144 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2146 /* Get SDIO ioport */
2147 mwifiex_init_sdio_ioport(adapter);
2149 /* Initialize SDIO variables in card */
2150 card->mp_rd_bitmap = 0;
2151 card->mp_wr_bitmap = 0;
2152 card->curr_rd_port = reg->start_rd_port;
2153 card->curr_wr_port = reg->start_wr_port;
2155 card->mp_data_port_mask = reg->data_port_mask;
2157 card->mpa_tx.buf_len = 0;
2158 card->mpa_tx.pkt_cnt = 0;
2159 card->mpa_tx.start_port = 0;
2161 card->mpa_tx.enabled = 1;
2162 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2164 card->mpa_rx.buf_len = 0;
2165 card->mpa_rx.pkt_cnt = 0;
2166 card->mpa_rx.start_port = 0;
2168 card->mpa_rx.enabled = 1;
2169 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2171 /* Allocate buffers for SDIO MP-A */
2172 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2176 /* Allocate skb pointer buffers */
2177 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
2178 card->mp_agg_pkt_limit, GFP_KERNEL);
2179 if (!card->mpa_rx.skb_arr) {
2180 kfree(card->mp_regs);
2184 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
2185 card->mp_agg_pkt_limit, GFP_KERNEL);
2186 if (!card->mpa_rx.len_arr) {
2187 kfree(card->mp_regs);
2188 kfree(card->mpa_rx.skb_arr);
2192 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2193 card->mp_tx_agg_buf_size,
2194 card->mp_rx_agg_buf_size);
2196 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2197 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2198 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2199 /* Disable rx single port aggregation */
2200 adapter->host_disable_sdio_rx_aggr = true;
2202 ret = mwifiex_alloc_sdio_mpa_buffers
2203 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2204 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2206 /* Disable multi port aggregation */
2207 card->mpa_tx.enabled = 0;
2208 card->mpa_rx.enabled = 0;
2212 adapter->auto_tdls = card->can_auto_tdls;
2213 adapter->ext_scan = card->can_ext_scan;
2218 * This function resets the MPA Tx and Rx buffers.
2220 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2222 struct sdio_mmc_card *card = adapter->card;
2224 MP_TX_AGGR_BUF_RESET(card);
2225 MP_RX_AGGR_BUF_RESET(card);
2229 * This function cleans up the allocated card buffers.
2231 * The following are freed by this function -
2236 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2238 struct sdio_mmc_card *card = adapter->card;
2240 kfree(card->mp_regs);
2241 kfree(card->mpa_rx.skb_arr);
2242 kfree(card->mpa_rx.len_arr);
2243 kfree(card->mpa_tx.buf);
2244 kfree(card->mpa_rx.buf);
2245 sdio_set_drvdata(card->func, NULL);
2250 * This function updates the MP end port in card.
2253 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2255 struct sdio_mmc_card *card = adapter->card;
2256 const struct mwifiex_sdio_card_reg *reg = card->reg;
2259 card->mp_end_port = port;
2261 card->mp_data_port_mask = reg->data_port_mask;
2263 if (reg->start_wr_port) {
2264 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2265 card->mp_data_port_mask &=
2266 ~(1 << (card->max_ports - i));
2269 card->curr_wr_port = reg->start_wr_port;
2271 mwifiex_dbg(adapter, CMD,
2272 "cmd: mp_end_port %d, data port mask 0x%x\n",
2273 port, card->mp_data_port_mask);
2276 static void mwifiex_recreate_adapter(struct sdio_mmc_card *card)
2278 struct sdio_func *func = card->func;
2279 const struct sdio_device_id *device_id = card->device_id;
2281 /* TODO mmc_hw_reset does not require destroying and re-probing the
2282 * whole adapter. Hence there was no need to for this rube-goldberg
2283 * design to reload the fw from an external workqueue. If we don't
2284 * destroy the adapter we could reload the fw from
2285 * mwifiex_main_work_queue directly.
2286 * The real difficulty with fw reset is to restore all the user
2287 * settings applied through ioctl. By destroying and recreating the
2288 * adapter, we take the easy way out, since we rely on user space to
2289 * restore them. We assume that user space will treat the new
2290 * incarnation of the adapter(interfaces) as if they had been just
2291 * discovered and initializes them from scratch.
2294 mwifiex_sdio_remove(func);
2296 /* power cycle the adapter */
2297 sdio_claim_host(func);
2298 mmc_hw_reset(func->card->host);
2299 sdio_release_host(func);
2301 /* Previous save_adapter won't be valid after this. We will cancel
2302 * pending work requests.
2304 clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags);
2305 clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
2307 mwifiex_sdio_probe(func, device_id);
2310 static struct mwifiex_adapter *save_adapter;
2311 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2313 struct sdio_mmc_card *card = adapter->card;
2315 /* TODO card pointer is unprotected. If the adapter is removed
2316 * physically, sdio core might trigger mwifiex_sdio_remove, before this
2317 * workqueue is run, which will destroy the adapter struct. When this
2318 * workqueue eventually exceutes it will dereference an invalid adapter
2321 mwifiex_recreate_adapter(card);
2324 /* This function read/write firmware */
2326 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2329 struct sdio_mmc_card *card = adapter->card;
2333 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2334 card->reg->fw_dump_ctrl, &ret);
2336 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2337 return RDWR_STATUS_FAILURE;
2339 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2340 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2343 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2344 return RDWR_STATUS_FAILURE;
2346 if (ctrl_data == FW_DUMP_DONE)
2348 if (doneflag && ctrl_data == doneflag)
2349 return RDWR_STATUS_DONE;
2350 if (ctrl_data != card->reg->fw_dump_host_ready) {
2351 mwifiex_dbg(adapter, WARN,
2352 "The ctrl reg was changed, re-try again\n");
2353 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2354 card->reg->fw_dump_ctrl, &ret);
2356 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2357 return RDWR_STATUS_FAILURE;
2360 usleep_range(100, 200);
2362 if (ctrl_data == card->reg->fw_dump_host_ready) {
2363 mwifiex_dbg(adapter, ERROR,
2364 "Fail to pull ctrl_data\n");
2365 return RDWR_STATUS_FAILURE;
2368 return RDWR_STATUS_SUCCESS;
2371 /* This function dump firmware memory to file */
2372 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2374 struct sdio_mmc_card *card = adapter->card;
2376 unsigned int reg, reg_start, reg_end;
2377 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2378 enum rdwr_status stat;
2381 if (!card->can_dump_fw)
2384 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2385 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2387 if (entry->mem_ptr) {
2388 vfree(entry->mem_ptr);
2389 entry->mem_ptr = NULL;
2391 entry->mem_size = 0;
2394 mwifiex_pm_wakeup_card(adapter);
2395 sdio_claim_host(card->func);
2397 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2399 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2400 if (stat == RDWR_STATUS_FAILURE)
2403 reg = card->reg->fw_dump_start;
2404 /* Read the number of the memories which will dump */
2405 dump_num = sdio_readb(card->func, reg, &ret);
2407 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2411 /* Read the length of every memory which will dump */
2412 for (idx = 0; idx < dump_num; idx++) {
2413 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2415 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2416 if (stat == RDWR_STATUS_FAILURE)
2420 reg = card->reg->fw_dump_start;
2421 for (i = 0; i < 4; i++) {
2422 read_reg = sdio_readb(card->func, reg, &ret);
2424 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2427 memory_size |= (read_reg << i*8);
2431 if (memory_size == 0) {
2432 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2433 ret = mwifiex_write_reg(adapter,
2434 card->reg->fw_dump_ctrl,
2437 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2443 mwifiex_dbg(adapter, DUMP,
2444 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2445 entry->mem_ptr = vmalloc(memory_size + 1);
2446 entry->mem_size = memory_size;
2447 if (!entry->mem_ptr) {
2448 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2452 dbg_ptr = entry->mem_ptr;
2453 end_ptr = dbg_ptr + memory_size;
2455 doneflag = entry->done_flag;
2456 mwifiex_dbg(adapter, DUMP,
2457 "Start %s output, please wait...\n",
2461 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2462 if (stat == RDWR_STATUS_FAILURE)
2465 reg_start = card->reg->fw_dump_start;
2466 reg_end = card->reg->fw_dump_end;
2467 for (reg = reg_start; reg <= reg_end; reg++) {
2468 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2470 mwifiex_dbg(adapter, ERROR,
2474 if (dbg_ptr < end_ptr)
2477 mwifiex_dbg(adapter, ERROR,
2478 "Allocated buf not enough\n");
2481 if (stat != RDWR_STATUS_DONE)
2484 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2485 entry->mem_name, dbg_ptr - entry->mem_ptr);
2489 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2492 sdio_release_host(card->func);
2495 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2497 struct sdio_mmc_card *card = adapter->card;
2498 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2499 unsigned int reg, reg_start, reg_end;
2500 u8 start_flag = 0, done_flag = 0;
2501 u8 *dbg_ptr, *end_ptr;
2502 enum rdwr_status stat;
2503 int ret = -1, tries;
2505 if (!card->fw_dump_enh)
2508 if (entry->mem_ptr) {
2509 vfree(entry->mem_ptr);
2510 entry->mem_ptr = NULL;
2512 entry->mem_size = 0;
2514 mwifiex_pm_wakeup_card(adapter);
2515 sdio_claim_host(card->func);
2517 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2519 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2520 if (stat == RDWR_STATUS_FAILURE)
2523 reg_start = card->reg->fw_dump_start;
2524 reg_end = card->reg->fw_dump_end;
2525 for (reg = reg_start; reg <= reg_end; reg++) {
2526 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2527 start_flag = sdio_readb(card->func, reg, &ret);
2529 mwifiex_dbg(adapter, ERROR,
2533 if (start_flag == 0)
2535 if (tries == MAX_POLL_TRIES) {
2536 mwifiex_dbg(adapter, ERROR,
2537 "FW not ready to dump\n");
2542 usleep_range(100, 200);
2545 entry->mem_ptr = vmalloc(0xf0000 + 1);
2546 if (!entry->mem_ptr) {
2550 dbg_ptr = entry->mem_ptr;
2551 entry->mem_size = 0xf0000;
2552 end_ptr = dbg_ptr + entry->mem_size;
2554 done_flag = entry->done_flag;
2555 mwifiex_dbg(adapter, DUMP,
2556 "Start %s output, please wait...\n", entry->mem_name);
2559 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2560 if (stat == RDWR_STATUS_FAILURE)
2562 for (reg = reg_start; reg <= reg_end; reg++) {
2563 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2565 mwifiex_dbg(adapter, ERROR,
2570 if (dbg_ptr >= end_ptr) {
2573 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2577 memcpy(tmp_ptr, entry->mem_ptr,
2579 vfree(entry->mem_ptr);
2580 entry->mem_ptr = tmp_ptr;
2582 dbg_ptr = entry->mem_ptr + entry->mem_size;
2583 entry->mem_size += 0x4000;
2584 end_ptr = entry->mem_ptr + entry->mem_size;
2587 if (stat == RDWR_STATUS_DONE) {
2588 entry->mem_size = dbg_ptr - entry->mem_ptr;
2589 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2590 entry->mem_name, entry->mem_size);
2595 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2599 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2600 if (entry->mem_ptr) {
2601 vfree(entry->mem_ptr);
2602 entry->mem_ptr = NULL;
2604 entry->mem_size = 0;
2606 sdio_release_host(card->func);
2609 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2611 struct sdio_mmc_card *card = adapter->card;
2613 mwifiex_drv_info_dump(adapter);
2614 if (card->fw_dump_enh)
2615 mwifiex_sdio_generic_fw_dump(adapter);
2617 mwifiex_sdio_fw_dump(adapter);
2618 mwifiex_upload_device_dump(adapter);
2621 static void mwifiex_sdio_work(struct work_struct *work)
2623 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2625 mwifiex_sdio_device_dump_work(save_adapter);
2626 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2628 mwifiex_sdio_card_reset_work(save_adapter);
2631 static DECLARE_WORK(sdio_work, mwifiex_sdio_work);
2632 /* This function resets the card */
2633 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2635 save_adapter = adapter;
2636 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags))
2639 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
2641 schedule_work(&sdio_work);
2644 /* This function dumps FW information */
2645 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
2647 save_adapter = adapter;
2648 if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags))
2651 set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags);
2652 schedule_work(&sdio_work);
2655 /* Function to dump SDIO function registers and SDIO scratch registers in case
2659 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2662 struct sdio_mmc_card *cardp = adapter->card;
2664 u8 count, func, data, index = 0, size = 0;
2665 u8 reg, reg_start, reg_end;
2666 char buf[256], *ptr;
2671 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
2673 mwifiex_pm_wakeup_card(adapter);
2675 sdio_claim_host(cardp->func);
2677 for (count = 0; count < 5; count++) {
2678 memset(buf, 0, sizeof(buf));
2683 /* Read the registers of SDIO function0 */
2689 /* Read the registers of SDIO function1 */
2691 reg_start = cardp->reg->func1_dump_reg_start;
2692 reg_end = cardp->reg->func1_dump_reg_end;
2697 reg_start = cardp->reg->func1_spec_reg_table[index++];
2698 size = cardp->reg->func1_spec_reg_num;
2699 reg_end = cardp->reg->func1_spec_reg_table[size-1];
2702 /* Read the scratch registers of SDIO function1 */
2706 reg_start = cardp->reg->func1_scratch_reg;
2707 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2711 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2712 func, reg_start, reg_end);
2714 ptr += sprintf(ptr, "SDIO Func%d: ", func);
2716 for (reg = reg_start; reg <= reg_end;) {
2718 data = sdio_f0_readb(cardp->func, reg, &ret);
2720 data = sdio_readb(cardp->func, reg, &ret);
2723 ptr += sprintf(ptr, "(%#x) ", reg);
2725 ptr += sprintf(ptr, "%02x ", data);
2727 ptr += sprintf(ptr, "ERR");
2731 if (count == 2 && reg < reg_end)
2732 reg = cardp->reg->func1_spec_reg_table[index++];
2737 mwifiex_dbg(adapter, MSG, "%s\n", buf);
2738 p += sprintf(p, "%s\n", buf);
2741 sdio_release_host(cardp->func);
2743 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
2748 static struct mwifiex_if_ops sdio_ops = {
2749 .init_if = mwifiex_init_sdio,
2750 .cleanup_if = mwifiex_cleanup_sdio,
2751 .check_fw_status = mwifiex_check_fw_status,
2752 .check_winner_status = mwifiex_check_winner_status,
2753 .prog_fw = mwifiex_prog_fw_w_helper,
2754 .register_dev = mwifiex_register_dev,
2755 .unregister_dev = mwifiex_unregister_dev,
2756 .enable_int = mwifiex_sdio_enable_host_int,
2757 .disable_int = mwifiex_sdio_disable_host_int,
2758 .process_int_status = mwifiex_process_int_status,
2759 .host_to_card = mwifiex_sdio_host_to_card,
2760 .wakeup = mwifiex_pm_wakeup_card,
2761 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2764 .update_mp_end_port = mwifiex_update_mp_end_port,
2765 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2766 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2767 .event_complete = mwifiex_sdio_event_complete,
2768 .dnld_fw = mwifiex_sdio_dnld_fw,
2769 .card_reset = mwifiex_sdio_card_reset,
2770 .reg_dump = mwifiex_sdio_reg_dump,
2771 .device_dump = mwifiex_sdio_device_dump,
2772 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
2776 * This function initializes the SDIO driver.
2778 * This initiates the semaphore and registers the device with
2782 mwifiex_sdio_init_module(void)
2784 sema_init(&add_remove_card_sem, 1);
2786 /* Clear the flag in case user removes the card. */
2789 return sdio_register_driver(&mwifiex_sdio);
2793 * This function cleans up the SDIO driver.
2795 * The following major steps are followed for cleanup -
2796 * - Resume the device if its suspended
2797 * - Disconnect the device if connected
2798 * - Shutdown the firmware
2799 * - Unregister the device from SDIO bus.
2802 mwifiex_sdio_cleanup_module(void)
2804 if (!down_interruptible(&add_remove_card_sem))
2805 up(&add_remove_card_sem);
2807 /* Set the flag as user is removing this module. */
2809 cancel_work_sync(&sdio_work);
2811 sdio_unregister_driver(&mwifiex_sdio);
2814 module_init(mwifiex_sdio_init_module);
2815 module_exit(mwifiex_sdio_cleanup_module);
2817 MODULE_AUTHOR("Marvell International Ltd.");
2818 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2819 MODULE_VERSION(SDIO_VERSION);
2820 MODULE_LICENSE("GPL v2");