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},
79 * This function probes an mwifiex device and registers it. It allocates
80 * the card structure, enables SDIO function number and initiates the
81 * device registration and initialization procedure by adding a logical
85 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
88 struct sdio_mmc_card *card = NULL;
90 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
91 func->vendor, func->device, func->class, func->num);
93 card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
100 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
102 if (id->driver_data) {
103 struct mwifiex_sdio_device *data = (void *)id->driver_data;
105 card->firmware = data->firmware;
106 card->reg = data->reg;
107 card->max_ports = data->max_ports;
108 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
109 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
110 card->has_control_mask = data->has_control_mask;
111 card->tx_buf_size = data->tx_buf_size;
112 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
113 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
114 card->can_dump_fw = data->can_dump_fw;
115 card->fw_dump_enh = data->fw_dump_enh;
116 card->can_auto_tdls = data->can_auto_tdls;
117 card->can_ext_scan = data->can_ext_scan;
120 sdio_claim_host(func);
121 ret = sdio_enable_func(func);
122 sdio_release_host(func);
125 pr_err("%s: failed to enable function\n", __func__);
130 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
132 pr_err("%s: add card failed\n", __func__);
134 sdio_claim_host(func);
135 ret = sdio_disable_func(func);
136 sdio_release_host(func);
146 * Kernel needs to suspend all functions separately. Therefore all
147 * registered functions must have drivers with suspend and resume
148 * methods. Failing that the kernel simply removes the whole card.
150 * If already not resumed, this function turns on the traffic and
151 * sends a host sleep cancel request to the firmware.
153 static int mwifiex_sdio_resume(struct device *dev)
155 struct sdio_func *func = dev_to_sdio_func(dev);
156 struct sdio_mmc_card *card;
157 struct mwifiex_adapter *adapter;
158 mmc_pm_flag_t pm_flag = 0;
161 pm_flag = sdio_get_host_pm_caps(func);
162 card = sdio_get_drvdata(func);
163 if (!card || !card->adapter) {
164 pr_err("resume: invalid card or adapter\n");
168 pr_err("resume: sdio_func is not specified\n");
172 adapter = card->adapter;
174 if (!adapter->is_suspended) {
175 mwifiex_dbg(adapter, WARN,
176 "device already resumed\n");
180 adapter->is_suspended = false;
182 /* Disable Host Sleep */
183 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
192 * This function removes the interface and frees up the card structure.
195 mwifiex_sdio_remove(struct sdio_func *func)
197 struct sdio_mmc_card *card;
198 struct mwifiex_adapter *adapter;
199 struct mwifiex_private *priv;
201 card = sdio_get_drvdata(func);
205 adapter = card->adapter;
206 if (!adapter || !adapter->priv_num)
209 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
212 if (adapter->is_suspended)
213 mwifiex_sdio_resume(adapter->dev);
215 mwifiex_deauthenticate_all(adapter);
217 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
218 mwifiex_disable_auto_ds(priv);
219 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
222 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
228 * Kernel needs to suspend all functions separately. Therefore all
229 * registered functions must have drivers with suspend and resume
230 * methods. Failing that the kernel simply removes the whole card.
232 * If already not suspended, this function allocates and sends a host
233 * sleep activate request to the firmware and turns off the traffic.
235 static int mwifiex_sdio_suspend(struct device *dev)
237 struct sdio_func *func = dev_to_sdio_func(dev);
238 struct sdio_mmc_card *card;
239 struct mwifiex_adapter *adapter;
240 mmc_pm_flag_t pm_flag = 0;
244 pm_flag = sdio_get_host_pm_caps(func);
245 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
246 sdio_func_id(func), pm_flag);
247 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
248 pr_err("%s: cannot remain alive while host is"
249 " suspended\n", sdio_func_id(func));
253 card = sdio_get_drvdata(func);
254 if (!card || !card->adapter) {
255 pr_err("suspend: invalid card or adapter\n");
259 pr_err("suspend: sdio_func is not specified\n");
263 adapter = card->adapter;
265 /* Enable the Host Sleep */
266 if (!mwifiex_enable_hs(adapter)) {
267 mwifiex_dbg(adapter, ERROR,
268 "cmd: failed to suspend\n");
269 adapter->hs_enabling = false;
273 mwifiex_dbg(adapter, INFO,
274 "cmd: suspend with MMC_PM_KEEP_POWER\n");
275 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
277 /* Indicate device suspended */
278 adapter->is_suspended = true;
279 adapter->hs_enabling = false;
284 /* Device ID for SD8786 */
285 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
286 /* Device ID for SD8787 */
287 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
288 /* Device ID for SD8797 */
289 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
290 /* Device ID for SD8897 */
291 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
292 /* Device ID for SD8887 */
293 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135)
294 /* Device ID for SD8801 */
295 #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139)
296 /* Device ID for SD8997 */
297 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141)
301 static const struct sdio_device_id mwifiex_ids[] = {
302 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
303 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
304 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
305 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
306 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
307 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
308 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
309 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
310 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
311 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
312 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801),
313 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
314 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997),
315 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
319 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
321 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
322 .suspend = mwifiex_sdio_suspend,
323 .resume = mwifiex_sdio_resume,
326 static struct sdio_driver mwifiex_sdio = {
327 .name = "mwifiex_sdio",
328 .id_table = mwifiex_ids,
329 .probe = mwifiex_sdio_probe,
330 .remove = mwifiex_sdio_remove,
332 .owner = THIS_MODULE,
333 .pm = &mwifiex_sdio_pm_ops,
337 /* Write data into SDIO card register. Caller claims SDIO device. */
339 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
342 sdio_writeb(func, data, reg, &ret);
347 * This function writes data into SDIO card register.
350 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
352 struct sdio_mmc_card *card = adapter->card;
355 sdio_claim_host(card->func);
356 ret = mwifiex_write_reg_locked(card->func, reg, data);
357 sdio_release_host(card->func);
363 * This function reads data from SDIO card register.
366 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
368 struct sdio_mmc_card *card = adapter->card;
372 sdio_claim_host(card->func);
373 val = sdio_readb(card->func, reg, &ret);
374 sdio_release_host(card->func);
382 * This function writes multiple data into SDIO card memory.
384 * This does not work in suspended mode.
387 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
388 u8 *buffer, u32 pkt_len, u32 port)
390 struct sdio_mmc_card *card = adapter->card;
393 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
394 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
397 BLOCK_MODE) ? (pkt_len /
398 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
399 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
401 if (adapter->is_suspended) {
402 mwifiex_dbg(adapter, ERROR,
403 "%s: not allowed while suspended\n", __func__);
407 sdio_claim_host(card->func);
409 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
411 sdio_release_host(card->func);
417 * This function reads multiple data from SDIO card memory.
419 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
420 u32 len, u32 port, u8 claim)
422 struct sdio_mmc_card *card = adapter->card;
424 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
426 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
427 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
429 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
432 sdio_claim_host(card->func);
434 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
437 sdio_release_host(card->func);
443 * This function wakes up the card.
445 * A host power up command is written to the card configuration
446 * register to wake up the card.
448 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
450 mwifiex_dbg(adapter, EVENT,
451 "event: wakeup device...\n");
453 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
457 * This function is called after the card has woken up.
459 * The card configuration register is reset.
461 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
463 mwifiex_dbg(adapter, EVENT,
464 "cmd: wakeup device completed\n");
466 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
470 * This function is used to initialize IO ports for the
471 * chipsets supporting SDIO new mode eg SD8897.
473 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
476 struct sdio_mmc_card *card = adapter->card;
478 adapter->ioport = MEM_PORT;
480 /* enable sdio new mode */
481 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®))
483 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
484 reg | CMD53_NEW_MODE))
487 /* Configure cmd port and enable reading rx length from the register */
488 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®))
490 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
491 reg | CMD_PORT_RD_LEN_EN))
494 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
497 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®))
499 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
500 reg | CMD_PORT_AUTO_EN))
506 /* This function initializes the IO ports.
508 * The following operations are performed -
509 * - Read the IO ports (0, 1 and 2)
510 * - Set host interrupt Reset-To-Read to clear
511 * - Set auto re-enable interrupt
513 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
516 struct sdio_mmc_card *card = adapter->card;
520 if (card->supports_sdio_new_mode) {
521 if (mwifiex_init_sdio_new_mode(adapter))
526 /* Read the IO port */
527 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®))
528 adapter->ioport |= (reg & 0xff);
532 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®))
533 adapter->ioport |= ((reg & 0xff) << 8);
537 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®))
538 adapter->ioport |= ((reg & 0xff) << 16);
542 mwifiex_dbg(adapter, INFO,
543 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
545 /* Set Host interrupt reset to read to clear */
546 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®))
547 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
548 reg | card->reg->sdio_int_mask);
552 /* Dnld/Upld ready set to auto reset */
553 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
554 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
555 reg | AUTO_RE_ENABLE_INT);
563 * This function sends data to the card.
565 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
566 u8 *payload, u32 pkt_len, u32 port)
572 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
575 mwifiex_dbg(adapter, ERROR,
576 "host_to_card, write iomem\t"
577 "(%d) failed: %d\n", i, ret);
578 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
579 mwifiex_dbg(adapter, ERROR,
580 "write CFG reg failed\n");
583 if (i > MAX_WRITE_IOMEM_RETRY)
592 * This function gets the read port.
594 * If control port bit is set in MP read bitmap, the control port
595 * is returned, otherwise the current read port is returned and
596 * the value is increased (provided it does not reach the maximum
597 * limit, in which case it is reset to 1)
599 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
601 struct sdio_mmc_card *card = adapter->card;
602 const struct mwifiex_sdio_card_reg *reg = card->reg;
603 u32 rd_bitmap = card->mp_rd_bitmap;
605 mwifiex_dbg(adapter, DATA,
606 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
608 if (card->supports_sdio_new_mode) {
609 if (!(rd_bitmap & reg->data_port_mask))
612 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
616 if ((card->has_control_mask) &&
617 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
618 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
620 mwifiex_dbg(adapter, DATA,
621 "data: port=%d mp_rd_bitmap=0x%08x\n",
622 *port, card->mp_rd_bitmap);
626 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
629 /* We are now handling the SDIO data ports */
630 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
631 *port = card->curr_rd_port;
633 if (++card->curr_rd_port == card->max_ports)
634 card->curr_rd_port = reg->start_rd_port;
636 mwifiex_dbg(adapter, DATA,
637 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
638 *port, rd_bitmap, card->mp_rd_bitmap);
644 * This function gets the write port for data.
646 * The current write port is returned if available and the value is
647 * increased (provided it does not reach the maximum limit, in which
648 * case it is reset to 1)
650 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
652 struct sdio_mmc_card *card = adapter->card;
653 const struct mwifiex_sdio_card_reg *reg = card->reg;
654 u32 wr_bitmap = card->mp_wr_bitmap;
656 mwifiex_dbg(adapter, DATA,
657 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
659 if (!(wr_bitmap & card->mp_data_port_mask)) {
660 adapter->data_sent = true;
664 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
665 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
666 *port = card->curr_wr_port;
667 if (++card->curr_wr_port == card->mp_end_port)
668 card->curr_wr_port = reg->start_wr_port;
670 adapter->data_sent = true;
674 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
675 mwifiex_dbg(adapter, ERROR,
676 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
677 *port, card->curr_wr_port, wr_bitmap,
682 mwifiex_dbg(adapter, DATA,
683 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
684 *port, wr_bitmap, card->mp_wr_bitmap);
690 * This function polls the card status.
693 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
695 struct sdio_mmc_card *card = adapter->card;
699 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
700 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
702 else if ((cs & bits) == bits)
705 usleep_range(10, 20);
708 mwifiex_dbg(adapter, ERROR,
709 "poll card status failed, tries = %d\n", tries);
715 * This function reads the firmware status.
718 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
720 struct sdio_mmc_card *card = adapter->card;
721 const struct mwifiex_sdio_card_reg *reg = card->reg;
724 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
727 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
730 *dat = (u16) ((fws1 << 8) | fws0);
736 * This function disables the host interrupt.
738 * The host interrupt mask is read, the disable bit is reset and
739 * written back to the card host interrupt mask register.
741 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
743 struct sdio_mmc_card *card = adapter->card;
744 struct sdio_func *func = card->func;
746 sdio_claim_host(func);
747 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
748 sdio_release_irq(func);
749 sdio_release_host(func);
753 * This function reads the interrupt status from card.
755 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
757 struct sdio_mmc_card *card = adapter->card;
761 if (mwifiex_read_data_sync(adapter, card->mp_regs,
762 card->reg->max_mp_regs,
763 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
764 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
768 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
771 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
772 * For SDIO new mode CMD port interrupts
773 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
774 * UP_LD_CMD_PORT_HOST_INT_STATUS
775 * Clear the interrupt status register
777 mwifiex_dbg(adapter, INTR,
778 "int: sdio_ireg = %#x\n", sdio_ireg);
779 spin_lock_irqsave(&adapter->int_lock, flags);
780 adapter->int_status |= sdio_ireg;
781 spin_unlock_irqrestore(&adapter->int_lock, flags);
786 * SDIO interrupt handler.
788 * This function reads the interrupt status from firmware and handles
789 * the interrupt in current thread (ksdioirqd) right away.
792 mwifiex_sdio_interrupt(struct sdio_func *func)
794 struct mwifiex_adapter *adapter;
795 struct sdio_mmc_card *card;
797 card = sdio_get_drvdata(func);
798 if (!card || !card->adapter) {
799 pr_debug("int: func=%p card=%p adapter=%p\n",
800 func, card, card ? card->adapter : NULL);
803 adapter = card->adapter;
805 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
806 adapter->ps_state = PS_STATE_AWAKE;
808 mwifiex_interrupt_status(adapter);
809 mwifiex_main_process(adapter);
813 * This function enables the host interrupt.
815 * The host interrupt enable mask is written to the card
816 * host interrupt mask register.
818 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
820 struct sdio_mmc_card *card = adapter->card;
821 struct sdio_func *func = card->func;
824 sdio_claim_host(func);
826 /* Request the SDIO IRQ */
827 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
829 mwifiex_dbg(adapter, ERROR,
830 "claim irq failed: ret=%d\n", ret);
834 /* Simply write the mask to the register */
835 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
836 card->reg->host_int_enable);
838 mwifiex_dbg(adapter, ERROR,
839 "enable host interrupt failed\n");
840 sdio_release_irq(func);
844 sdio_release_host(func);
849 * This function sends a data buffer to the card.
851 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
852 u32 *type, u8 *buffer,
853 u32 npayload, u32 ioport)
859 mwifiex_dbg(adapter, ERROR,
860 "%s: buffer is NULL\n", __func__);
864 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
867 mwifiex_dbg(adapter, ERROR,
868 "%s: read iomem failed: %d\n", __func__,
873 nb = le16_to_cpu(*(__le16 *) (buffer));
875 mwifiex_dbg(adapter, ERROR,
876 "%s: invalid packet, nb=%d npayload=%d\n",
877 __func__, nb, npayload);
881 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
887 * This function downloads the firmware to the card.
889 * Firmware is downloaded to the card in blocks. Every block download
890 * is tested for CRC errors, and retried a number of times before
893 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
894 struct mwifiex_fw_image *fw)
896 struct sdio_mmc_card *card = adapter->card;
897 const struct mwifiex_sdio_card_reg *reg = card->reg;
899 u8 *firmware = fw->fw_buf;
900 u32 firmware_len = fw->fw_len;
905 u32 txlen, tx_blocks = 0, tries;
909 mwifiex_dbg(adapter, ERROR,
910 "firmware image not found! Terminating download\n");
914 mwifiex_dbg(adapter, INFO,
915 "info: downloading FW image (%d bytes)\n",
918 /* Assume that the allocated buffer is 8-byte aligned */
919 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
923 sdio_claim_host(card->func);
925 /* Perform firmware data transfer */
927 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
929 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
932 mwifiex_dbg(adapter, ERROR,
933 "FW download with helper:\t"
934 "poll status timeout @ %d\n", offset);
939 if (offset >= firmware_len)
942 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
943 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
946 mwifiex_dbg(adapter, ERROR,
947 "dev BASE0 register read failed:\t"
948 "base0=%#04X(%d). Terminating dnld\n",
952 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
955 mwifiex_dbg(adapter, ERROR,
956 "dev BASE1 register read failed:\t"
957 "base1=%#04X(%d). Terminating dnld\n",
961 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
966 usleep_range(10, 20);
971 } else if (len > MWIFIEX_UPLD_SIZE) {
972 mwifiex_dbg(adapter, ERROR,
973 "FW dnld failed @ %d, invalid length %d\n",
983 if (i > MAX_WRITE_IOMEM_RETRY) {
984 mwifiex_dbg(adapter, ERROR,
985 "FW dnld failed @ %d, over max retry\n",
990 mwifiex_dbg(adapter, ERROR,
991 "CRC indicated by the helper:\t"
992 "len = 0x%04X, txlen = %d\n", len, txlen);
994 /* Setting this to 0 to resend from same offset */
999 /* Set blocksize to transfer - checking for last
1001 if (firmware_len - offset < txlen)
1002 txlen = firmware_len - offset;
1004 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1005 / MWIFIEX_SDIO_BLOCK_SIZE;
1007 /* Copy payload to buffer */
1008 memmove(fwbuf, &firmware[offset], txlen);
1011 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
1012 MWIFIEX_SDIO_BLOCK_SIZE,
1015 mwifiex_dbg(adapter, ERROR,
1016 "FW download, write iomem (%d) failed @ %d\n",
1018 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1019 mwifiex_dbg(adapter, ERROR,
1020 "write CFG reg failed\n");
1029 sdio_release_host(card->func);
1031 mwifiex_dbg(adapter, MSG,
1032 "info: FW download over, size %d bytes\n", offset);
1041 * This function checks the firmware status in card.
1043 * The winner interface is also determined by this function.
1045 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
1048 struct sdio_mmc_card *card = adapter->card;
1054 /* Wait for firmware initialization event */
1055 for (tries = 0; tries < poll_num; tries++) {
1056 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
1059 if (firmware_stat == FIRMWARE_READY_SDIO) {
1069 if (mwifiex_read_reg
1070 (adapter, card->reg->status_reg_0, &winner_status))
1074 adapter->winner = 0;
1076 adapter->winner = 1;
1082 * This function decode sdio aggreation pkt.
1084 * Based on the the data block size and pkt_len,
1085 * skb data will be decoded to few packets.
1087 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1088 struct sk_buff *skb)
1090 u32 total_pkt_len, pkt_len;
1091 struct sk_buff *skb_deaggr;
1098 total_pkt_len = skb->len;
1100 while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) {
1101 if (total_pkt_len < adapter->sdio_rx_block_size)
1103 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1104 blk_size = adapter->sdio_rx_block_size * blk_num;
1105 if (blk_size > total_pkt_len) {
1106 mwifiex_dbg(adapter, ERROR,
1107 "%s: error in blk_size,\t"
1108 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1109 __func__, blk_num, blk_size, total_pkt_len);
1112 pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET));
1113 pkt_type = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET +
1115 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1116 mwifiex_dbg(adapter, ERROR,
1117 "%s: error in pkt_len,\t"
1118 "pkt_len=%d, blk_size=%d\n",
1119 __func__, pkt_len, blk_size);
1122 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len,
1123 GFP_KERNEL | GFP_DMA);
1126 skb_put(skb_deaggr, pkt_len);
1127 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1128 skb_pull(skb_deaggr, INTF_HEADER_LEN);
1130 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1132 total_pkt_len -= blk_size;
1137 * This function decodes a received packet.
1139 * Based on the type, the packet is treated as either a data, or
1140 * a command response, or an event, and the correct handler
1141 * function is invoked.
1143 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1144 struct sk_buff *skb, u32 upld_typ)
1147 __le16 *curr_ptr = (__le16 *)skb->data;
1148 u16 pkt_len = le16_to_cpu(*curr_ptr);
1149 struct mwifiex_rxinfo *rx_info;
1151 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1152 skb_trim(skb, pkt_len);
1153 skb_pull(skb, INTF_HEADER_LEN);
1157 case MWIFIEX_TYPE_AGGR_DATA:
1158 mwifiex_dbg(adapter, INFO,
1159 "info: --- Rx: Aggr Data packet ---\n");
1160 rx_info = MWIFIEX_SKB_RXCB(skb);
1161 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1162 if (adapter->rx_work_enabled) {
1163 skb_queue_tail(&adapter->rx_data_q, skb);
1164 atomic_inc(&adapter->rx_pending);
1165 adapter->data_received = true;
1167 mwifiex_deaggr_sdio_pkt(adapter, skb);
1168 dev_kfree_skb_any(skb);
1172 case MWIFIEX_TYPE_DATA:
1173 mwifiex_dbg(adapter, DATA,
1174 "info: --- Rx: Data packet ---\n");
1175 if (adapter->rx_work_enabled) {
1176 skb_queue_tail(&adapter->rx_data_q, skb);
1177 adapter->data_received = true;
1178 atomic_inc(&adapter->rx_pending);
1180 mwifiex_handle_rx_packet(adapter, skb);
1184 case MWIFIEX_TYPE_CMD:
1185 mwifiex_dbg(adapter, CMD,
1186 "info: --- Rx: Cmd Response ---\n");
1187 /* take care of curr_cmd = NULL case */
1188 if (!adapter->curr_cmd) {
1189 cmd_buf = adapter->upld_buf;
1191 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1192 mwifiex_process_sleep_confirm_resp(adapter,
1196 memcpy(cmd_buf, skb->data,
1197 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1200 dev_kfree_skb_any(skb);
1202 adapter->cmd_resp_received = true;
1203 adapter->curr_cmd->resp_skb = skb;
1207 case MWIFIEX_TYPE_EVENT:
1208 mwifiex_dbg(adapter, EVENT,
1209 "info: --- Rx: Event ---\n");
1210 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
1212 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1213 memcpy(adapter->event_body,
1214 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1217 /* event cause has been saved to adapter->event_cause */
1218 adapter->event_received = true;
1219 adapter->event_skb = skb;
1224 mwifiex_dbg(adapter, ERROR,
1225 "unknown upload type %#x\n", upld_typ);
1226 dev_kfree_skb_any(skb);
1234 * This function transfers received packets from card to driver, performing
1235 * aggregation if required.
1237 * For data received on control port, or if aggregation is disabled, the
1238 * received buffers are uploaded as separate packets. However, if aggregation
1239 * is enabled and required, the buffers are copied onto an aggregation buffer,
1240 * provided there is space left, processed and finally uploaded.
1242 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1243 u16 rx_len, u8 port)
1245 struct sdio_mmc_card *card = adapter->card;
1246 s32 f_do_rx_aggr = 0;
1247 s32 f_do_rx_cur = 0;
1249 s32 f_post_aggr_cur = 0;
1250 struct sk_buff *skb_deaggr;
1251 struct sk_buff *skb = NULL;
1252 u32 pkt_len, pkt_type, mport, pind;
1255 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1256 /* Read the command Resp without aggr */
1257 mwifiex_dbg(adapter, CMD,
1258 "info: %s: no aggregation for cmd\t"
1259 "response\n", __func__);
1262 goto rx_curr_single;
1265 if (!card->mpa_rx.enabled) {
1266 mwifiex_dbg(adapter, WARN,
1267 "info: %s: rx aggregation disabled\n",
1271 goto rx_curr_single;
1274 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1275 card->reg->data_port_mask)) ||
1276 (card->has_control_mask && (card->mp_rd_bitmap &
1277 (~((u32) CTRL_PORT_MASK))))) {
1278 /* Some more data RX pending */
1279 mwifiex_dbg(adapter, INFO,
1280 "info: %s: not last packet\n", __func__);
1282 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1283 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1286 /* No room in Aggr buf, do rx aggr now */
1288 f_post_aggr_cur = 1;
1291 /* Rx aggr not in progress */
1296 /* No more data RX pending */
1297 mwifiex_dbg(adapter, INFO,
1298 "info: %s: last packet\n", __func__);
1300 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1302 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1305 /* No room in Aggr buf, do rx aggr now */
1313 mwifiex_dbg(adapter, INFO,
1314 "info: current packet aggregation\n");
1315 /* Curr pkt can be aggregated */
1316 mp_rx_aggr_setup(card, rx_len, port);
1318 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1319 mp_rx_aggr_port_limit_reached(card)) {
1320 mwifiex_dbg(adapter, INFO,
1321 "info: %s: aggregated packet\t"
1322 "limit reached\n", __func__);
1323 /* No more pkts allowed in Aggr buf, rx it */
1329 /* do aggr RX now */
1330 mwifiex_dbg(adapter, DATA,
1331 "info: do_rx_aggr: num of packets: %d\n",
1332 card->mpa_rx.pkt_cnt);
1334 if (card->supports_sdio_new_mode) {
1338 for (i = 0, port_count = 0; i < card->max_ports; i++)
1339 if (card->mpa_rx.ports & BIT(i))
1342 /* Reading data from "start_port + 0" to "start_port +
1343 * port_count -1", so decrease the count by 1
1346 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1347 (port_count << 8)) + card->mpa_rx.start_port;
1349 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1350 (card->mpa_rx.ports << 4)) +
1351 card->mpa_rx.start_port;
1354 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1355 card->mpa_rx.buf_len, mport, 1))
1358 curr_ptr = card->mpa_rx.buf;
1360 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1361 u32 *len_arr = card->mpa_rx.len_arr;
1363 /* get curr PKT len & type */
1364 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1365 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
1367 /* copy pkt to deaggr buf */
1368 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1372 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1373 "drop pkt len=%d type=%d\n",
1375 curr_ptr += len_arr[pind];
1379 skb_put(skb_deaggr, len_arr[pind]);
1381 if ((pkt_type == MWIFIEX_TYPE_DATA ||
1382 (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1383 adapter->sdio_rx_aggr_enable)) &&
1384 (pkt_len <= len_arr[pind])) {
1386 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1388 skb_trim(skb_deaggr, pkt_len);
1390 /* Process de-aggr packet */
1391 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1394 mwifiex_dbg(adapter, ERROR,
1395 "drop wrong aggr pkt:\t"
1396 "sdio_single_port_rx_aggr=%d\t"
1397 "type=%d len=%d max_len=%d\n",
1398 adapter->sdio_rx_aggr_enable,
1399 pkt_type, pkt_len, len_arr[pind]);
1400 dev_kfree_skb_any(skb_deaggr);
1402 curr_ptr += len_arr[pind];
1404 MP_RX_AGGR_BUF_RESET(card);
1409 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1412 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1414 mwifiex_dbg(adapter, ERROR,
1415 "single skb allocated fail,\t"
1416 "drop pkt port=%d len=%d\n", port, rx_len);
1417 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1418 card->mpa_rx.buf, rx_len,
1419 adapter->ioport + port))
1424 skb_put(skb, rx_len);
1426 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1427 skb->data, skb->len,
1428 adapter->ioport + port))
1430 if (!adapter->sdio_rx_aggr_enable &&
1431 pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1432 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1433 "current SDIO RX Aggr not enabled\n",
1435 dev_kfree_skb_any(skb);
1439 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1441 if (f_post_aggr_cur) {
1442 mwifiex_dbg(adapter, INFO,
1443 "info: current packet aggregation\n");
1444 /* Curr pkt can be aggregated */
1445 mp_rx_aggr_setup(card, rx_len, port);
1450 if (MP_RX_AGGR_IN_PROGRESS(card))
1451 MP_RX_AGGR_BUF_RESET(card);
1453 if (f_do_rx_cur && skb)
1454 /* Single transfer pending. Free curr buff also */
1455 dev_kfree_skb_any(skb);
1461 * This function checks the current interrupt status.
1463 * The following interrupts are checked and handled by this function -
1466 * - Packets received
1468 * Since the firmware does not generate download ready interrupt if the
1469 * port updated is command port only, command sent interrupt checking
1470 * should be done manually, and for every SDIO interrupt.
1472 * In case of Rx packets received, the packets are uploaded from card to
1473 * host and processed accordingly.
1475 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1477 struct sdio_mmc_card *card = adapter->card;
1478 const struct mwifiex_sdio_card_reg *reg = card->reg;
1481 struct sk_buff *skb;
1482 u8 port = CTRL_PORT;
1483 u32 len_reg_l, len_reg_u;
1486 unsigned long flags;
1490 spin_lock_irqsave(&adapter->int_lock, flags);
1491 sdio_ireg = adapter->int_status;
1492 adapter->int_status = 0;
1493 spin_unlock_irqrestore(&adapter->int_lock, flags);
1498 /* Following interrupt is only for SDIO new mode */
1499 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1500 adapter->cmd_sent = false;
1502 /* Following interrupt is only for SDIO new mode */
1503 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1506 /* read the len of control packet */
1507 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1508 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1509 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1510 if (rx_len <= INTF_HEADER_LEN ||
1511 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1512 MWIFIEX_RX_DATA_BUF_SIZE)
1514 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1515 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1517 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA);
1521 skb_put(skb, rx_len);
1523 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1524 skb->len, adapter->ioport |
1526 mwifiex_dbg(adapter, ERROR,
1527 "%s: failed to card_to_host", __func__);
1528 dev_kfree_skb_any(skb);
1532 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1533 (pkt_type != MWIFIEX_TYPE_EVENT))
1534 mwifiex_dbg(adapter, ERROR,
1535 "%s:Received wrong packet on cmd port",
1538 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1541 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1542 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1543 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1544 if (card->supports_sdio_new_mode) {
1546 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1548 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1550 card->mp_wr_bitmap = bitmap;
1552 mwifiex_dbg(adapter, INTR,
1553 "int: DNLD: wr_bitmap=0x%x\n",
1554 card->mp_wr_bitmap);
1555 if (adapter->data_sent &&
1556 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1557 mwifiex_dbg(adapter, INTR,
1558 "info: <--- Tx DONE Interrupt --->\n");
1559 adapter->data_sent = false;
1563 /* As firmware will not generate download ready interrupt if the port
1564 updated is command port only, cmd_sent should be done for any SDIO
1566 if (card->has_control_mask && adapter->cmd_sent) {
1567 /* Check if firmware has attach buffer at command port and
1568 update just that in wr_bit_map. */
1569 card->mp_wr_bitmap |=
1570 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1571 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1572 adapter->cmd_sent = false;
1575 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
1576 adapter->cmd_sent, adapter->data_sent);
1577 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1578 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1579 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1580 if (card->supports_sdio_new_mode) {
1582 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1584 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1586 card->mp_rd_bitmap = bitmap;
1587 mwifiex_dbg(adapter, INTR,
1588 "int: UPLD: rd_bitmap=0x%x\n",
1589 card->mp_rd_bitmap);
1592 ret = mwifiex_get_rd_port(adapter, &port);
1594 mwifiex_dbg(adapter, INFO,
1595 "info: no more rd_port available\n");
1598 len_reg_l = reg->rd_len_p0_l + (port << 1);
1599 len_reg_u = reg->rd_len_p0_u + (port << 1);
1600 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1601 rx_len |= (u16) card->mp_regs[len_reg_l];
1602 mwifiex_dbg(adapter, INFO,
1603 "info: RX: port=%d rx_len=%u\n",
1606 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1607 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1608 if (rx_len <= INTF_HEADER_LEN ||
1609 (card->mpa_rx.enabled &&
1610 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1611 card->mpa_rx.buf_size))) {
1612 mwifiex_dbg(adapter, ERROR,
1613 "invalid rx_len=%d\n",
1618 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1619 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
1622 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
1624 mwifiex_dbg(adapter, ERROR,
1625 "card_to_host_mpa failed: int status=%#x\n",
1636 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1637 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
1639 mwifiex_dbg(adapter, INFO,
1640 "info: CFG reg val = %d\n", cr);
1642 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1643 mwifiex_dbg(adapter, ERROR,
1644 "write CFG reg failed\n");
1646 mwifiex_dbg(adapter, INFO, "info: write success\n");
1648 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1649 mwifiex_dbg(adapter, ERROR,
1650 "read CFG reg failed\n");
1652 mwifiex_dbg(adapter, INFO,
1653 "info: CFG reg val =%x\n", cr);
1659 * This function aggregates transmission buffers in driver and downloads
1660 * the aggregated packet to card.
1662 * The individual packets are aggregated by copying into an aggregation
1663 * buffer and then downloaded to the card. Previous unsent packets in the
1664 * aggregation buffer are pre-copied first before new packets are added.
1665 * Aggregation is done till there is space left in the aggregation buffer,
1666 * or till new packets are available.
1668 * The function will only download the packet to the card when aggregation
1669 * stops, otherwise it will just aggregate the packet in aggregation buffer
1672 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1673 u8 *payload, u32 pkt_len, u32 port,
1676 struct sdio_mmc_card *card = adapter->card;
1678 s32 f_send_aggr_buf = 0;
1679 s32 f_send_cur_buf = 0;
1680 s32 f_precopy_cur_buf = 0;
1681 s32 f_postcopy_cur_buf = 0;
1684 if (!card->mpa_tx.enabled ||
1685 (card->has_control_mask && (port == CTRL_PORT)) ||
1686 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1687 mwifiex_dbg(adapter, WARN,
1688 "info: %s: tx aggregation disabled\n",
1692 goto tx_curr_single;
1696 /* More pkt in TX queue */
1697 mwifiex_dbg(adapter, INFO,
1698 "info: %s: more packets in queue.\n",
1701 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1702 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1703 f_precopy_cur_buf = 1;
1705 if (!(card->mp_wr_bitmap &
1706 (1 << card->curr_wr_port)) ||
1707 !MP_TX_AGGR_BUF_HAS_ROOM(
1708 card, pkt_len + next_pkt_len))
1709 f_send_aggr_buf = 1;
1711 /* No room in Aggr buf, send it */
1712 f_send_aggr_buf = 1;
1714 if (!(card->mp_wr_bitmap &
1715 (1 << card->curr_wr_port)))
1718 f_postcopy_cur_buf = 1;
1721 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1722 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1723 f_precopy_cur_buf = 1;
1728 /* Last pkt in TX queue */
1729 mwifiex_dbg(adapter, INFO,
1730 "info: %s: Last packet in Tx Queue.\n",
1733 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1734 /* some packs in Aggr buf already */
1735 f_send_aggr_buf = 1;
1737 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1738 f_precopy_cur_buf = 1;
1740 /* No room in Aggr buf, send it */
1747 if (f_precopy_cur_buf) {
1748 mwifiex_dbg(adapter, DATA,
1749 "data: %s: precopy current buffer\n",
1751 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1753 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1754 mp_tx_aggr_port_limit_reached(card))
1755 /* No more pkts allowed in Aggr buf, send it */
1756 f_send_aggr_buf = 1;
1759 if (f_send_aggr_buf) {
1760 mwifiex_dbg(adapter, DATA,
1761 "data: %s: send aggr buffer: %d %d\n",
1762 __func__, card->mpa_tx.start_port,
1763 card->mpa_tx.ports);
1764 if (card->supports_sdio_new_mode) {
1768 for (i = 0, port_count = 0; i < card->max_ports; i++)
1769 if (card->mpa_tx.ports & BIT(i))
1772 /* Writing data from "start_port + 0" to "start_port +
1773 * port_count -1", so decrease the count by 1
1776 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1777 (port_count << 8)) + card->mpa_tx.start_port;
1779 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1780 (card->mpa_tx.ports << 4)) +
1781 card->mpa_tx.start_port;
1784 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1785 card->mpa_tx.buf_len, mport);
1787 MP_TX_AGGR_BUF_RESET(card);
1791 if (f_send_cur_buf) {
1792 mwifiex_dbg(adapter, DATA,
1793 "data: %s: send current buffer %d\n",
1795 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1796 adapter->ioport + port);
1799 if (f_postcopy_cur_buf) {
1800 mwifiex_dbg(adapter, DATA,
1801 "data: %s: postcopy current buffer\n",
1803 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1810 * This function downloads data from driver to card.
1812 * Both commands and data packets are transferred to the card by this
1815 * This function adds the SDIO specific header to the front of the buffer
1816 * before transferring. The header contains the length of the packet and
1817 * the type. The firmware handles the packets based upon this set type.
1819 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1820 u8 type, struct sk_buff *skb,
1821 struct mwifiex_tx_param *tx_param)
1823 struct sdio_mmc_card *card = adapter->card;
1827 u32 port = CTRL_PORT;
1828 u8 *payload = (u8 *)skb->data;
1829 u32 pkt_len = skb->len;
1831 /* Allocate buffer and copy payload */
1832 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1833 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1834 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1835 *(__le16 *)&payload[2] = cpu_to_le16(type);
1838 * This is SDIO specific header
1840 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1841 * MWIFIEX_TYPE_EVENT = 3)
1843 if (type == MWIFIEX_TYPE_DATA) {
1844 ret = mwifiex_get_wr_port_data(adapter, &port);
1846 mwifiex_dbg(adapter, ERROR,
1847 "%s: no wr_port available\n",
1852 adapter->cmd_sent = true;
1853 /* Type must be MWIFIEX_TYPE_CMD */
1855 if (pkt_len <= INTF_HEADER_LEN ||
1856 pkt_len > MWIFIEX_UPLD_SIZE)
1857 mwifiex_dbg(adapter, ERROR,
1858 "%s: payload=%p, nb=%d\n",
1859 __func__, payload, pkt_len);
1861 if (card->supports_sdio_new_mode)
1862 port = CMD_PORT_SLCT;
1865 /* Transfer data to card */
1866 pkt_len = buf_block_len * blk_size;
1869 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1870 port, tx_param->next_pkt_len
1873 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1877 if (type == MWIFIEX_TYPE_CMD)
1878 adapter->cmd_sent = false;
1879 if (type == MWIFIEX_TYPE_DATA) {
1880 adapter->data_sent = false;
1881 /* restore curr_wr_port in error cases */
1882 card->curr_wr_port = port;
1883 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1886 if (type == MWIFIEX_TYPE_DATA) {
1887 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1888 adapter->data_sent = true;
1890 adapter->data_sent = false;
1898 * This function allocates the MPA Tx and Rx buffers.
1900 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1901 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1903 struct sdio_mmc_card *card = adapter->card;
1907 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1908 if (!card->mpa_tx.buf) {
1913 card->mpa_tx.buf_size = mpa_tx_buf_size;
1915 rx_buf_size = max_t(u32, mpa_rx_buf_size,
1916 (u32)SDIO_MAX_AGGR_BUF_SIZE);
1917 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
1918 if (!card->mpa_rx.buf) {
1923 card->mpa_rx.buf_size = rx_buf_size;
1927 kfree(card->mpa_tx.buf);
1928 kfree(card->mpa_rx.buf);
1929 card->mpa_tx.buf_size = 0;
1930 card->mpa_rx.buf_size = 0;
1931 card->mpa_tx.buf = NULL;
1932 card->mpa_rx.buf = NULL;
1939 * This function unregisters the SDIO device.
1941 * The SDIO IRQ is released, the function is disabled and driver
1942 * data is set to null.
1945 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1947 struct sdio_mmc_card *card = adapter->card;
1949 if (adapter->card) {
1950 sdio_claim_host(card->func);
1951 sdio_disable_func(card->func);
1952 sdio_release_host(card->func);
1957 * This function registers the SDIO device.
1959 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1961 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1964 struct sdio_mmc_card *card = adapter->card;
1965 struct sdio_func *func = card->func;
1967 /* save adapter pointer in card */
1968 card->adapter = adapter;
1969 adapter->tx_buf_size = card->tx_buf_size;
1971 sdio_claim_host(func);
1973 /* Set block size */
1974 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1975 sdio_release_host(func);
1977 mwifiex_dbg(adapter, ERROR,
1978 "cannot set SDIO block size\n");
1983 adapter->dev = &func->dev;
1985 strcpy(adapter->fw_name, card->firmware);
1986 if (card->fw_dump_enh) {
1987 adapter->mem_type_mapping_tbl = generic_mem_type_map;
1988 adapter->num_mem_types = 1;
1990 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
1991 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
1998 * This function initializes the SDIO driver.
2000 * The following initializations steps are followed -
2001 * - Read the Host interrupt status register to acknowledge
2002 * the first interrupt got from bootloader
2003 * - Disable host interrupt mask register
2005 * - Initialize SDIO variables in card
2006 * - Allocate MP registers
2007 * - Allocate MPA Tx and Rx buffers
2009 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2011 struct sdio_mmc_card *card = adapter->card;
2012 const struct mwifiex_sdio_card_reg *reg = card->reg;
2016 sdio_set_drvdata(card->func, card);
2019 * Read the host_int_status_reg for ACK the first interrupt got
2020 * from the bootloader. If we don't do this we get a interrupt
2021 * as soon as we register the irq.
2023 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2025 /* Get SDIO ioport */
2026 mwifiex_init_sdio_ioport(adapter);
2028 /* Initialize SDIO variables in card */
2029 card->mp_rd_bitmap = 0;
2030 card->mp_wr_bitmap = 0;
2031 card->curr_rd_port = reg->start_rd_port;
2032 card->curr_wr_port = reg->start_wr_port;
2034 card->mp_data_port_mask = reg->data_port_mask;
2036 card->mpa_tx.buf_len = 0;
2037 card->mpa_tx.pkt_cnt = 0;
2038 card->mpa_tx.start_port = 0;
2040 card->mpa_tx.enabled = 1;
2041 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2043 card->mpa_rx.buf_len = 0;
2044 card->mpa_rx.pkt_cnt = 0;
2045 card->mpa_rx.start_port = 0;
2047 card->mpa_rx.enabled = 1;
2048 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2050 /* Allocate buffers for SDIO MP-A */
2051 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2055 /* Allocate skb pointer buffers */
2056 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
2057 card->mp_agg_pkt_limit, GFP_KERNEL);
2058 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
2059 card->mp_agg_pkt_limit, GFP_KERNEL);
2060 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2061 card->mp_tx_agg_buf_size,
2062 card->mp_rx_agg_buf_size);
2064 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2065 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2066 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2067 /* Disable rx single port aggregation */
2068 adapter->host_disable_sdio_rx_aggr = true;
2070 ret = mwifiex_alloc_sdio_mpa_buffers
2071 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2072 MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2074 /* Disable multi port aggregation */
2075 card->mpa_tx.enabled = 0;
2076 card->mpa_rx.enabled = 0;
2080 adapter->auto_tdls = card->can_auto_tdls;
2081 adapter->ext_scan = card->can_ext_scan;
2086 * This function resets the MPA Tx and Rx buffers.
2088 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2090 struct sdio_mmc_card *card = adapter->card;
2092 MP_TX_AGGR_BUF_RESET(card);
2093 MP_RX_AGGR_BUF_RESET(card);
2097 * This function cleans up the allocated card buffers.
2099 * The following are freed by this function -
2104 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2106 struct sdio_mmc_card *card = adapter->card;
2108 kfree(card->mp_regs);
2109 kfree(card->mpa_rx.skb_arr);
2110 kfree(card->mpa_rx.len_arr);
2111 kfree(card->mpa_tx.buf);
2112 kfree(card->mpa_rx.buf);
2113 sdio_set_drvdata(card->func, NULL);
2118 * This function updates the MP end port in card.
2121 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2123 struct sdio_mmc_card *card = adapter->card;
2124 const struct mwifiex_sdio_card_reg *reg = card->reg;
2127 card->mp_end_port = port;
2129 card->mp_data_port_mask = reg->data_port_mask;
2131 if (reg->start_wr_port) {
2132 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2133 card->mp_data_port_mask &=
2134 ~(1 << (card->max_ports - i));
2137 card->curr_wr_port = reg->start_wr_port;
2139 mwifiex_dbg(adapter, CMD,
2140 "cmd: mp_end_port %d, data port mask 0x%x\n",
2141 port, card->mp_data_port_mask);
2144 static void mwifiex_recreate_adapter(struct sdio_mmc_card *card)
2146 struct sdio_func *func = card->func;
2147 const struct sdio_device_id *device_id = card->device_id;
2149 /* TODO mmc_hw_reset does not require destroying and re-probing the
2150 * whole adapter. Hence there was no need to for this rube-goldberg
2151 * design to reload the fw from an external workqueue. If we don't
2152 * destroy the adapter we could reload the fw from
2153 * mwifiex_main_work_queue directly.
2154 * The real difficulty with fw reset is to restore all the user
2155 * settings applied through ioctl. By destroying and recreating the
2156 * adapter, we take the easy way out, since we rely on user space to
2157 * restore them. We assume that user space will treat the new
2158 * incarnation of the adapter(interfaces) as if they had been just
2159 * discovered and initializes them from scratch.
2162 mwifiex_sdio_remove(func);
2164 /* power cycle the adapter */
2165 sdio_claim_host(func);
2166 mmc_hw_reset(func->card->host);
2167 sdio_release_host(func);
2169 mwifiex_sdio_probe(func, device_id);
2172 static struct mwifiex_adapter *save_adapter;
2173 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2175 struct sdio_mmc_card *card = adapter->card;
2177 /* TODO card pointer is unprotected. If the adapter is removed
2178 * physically, sdio core might trigger mwifiex_sdio_remove, before this
2179 * workqueue is run, which will destroy the adapter struct. When this
2180 * workqueue eventually exceutes it will dereference an invalid adapter
2183 mwifiex_recreate_adapter(card);
2186 /* This function read/write firmware */
2188 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2191 struct sdio_mmc_card *card = adapter->card;
2195 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2196 card->reg->fw_dump_ctrl, &ret);
2198 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2199 return RDWR_STATUS_FAILURE;
2201 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2202 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2205 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2206 return RDWR_STATUS_FAILURE;
2208 if (ctrl_data == FW_DUMP_DONE)
2210 if (doneflag && ctrl_data == doneflag)
2211 return RDWR_STATUS_DONE;
2212 if (ctrl_data != card->reg->fw_dump_host_ready) {
2213 mwifiex_dbg(adapter, WARN,
2214 "The ctrl reg was changed, re-try again\n");
2215 sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2216 card->reg->fw_dump_ctrl, &ret);
2218 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2219 return RDWR_STATUS_FAILURE;
2222 usleep_range(100, 200);
2224 if (ctrl_data == card->reg->fw_dump_host_ready) {
2225 mwifiex_dbg(adapter, ERROR,
2226 "Fail to pull ctrl_data\n");
2227 return RDWR_STATUS_FAILURE;
2230 return RDWR_STATUS_SUCCESS;
2233 /* This function dump firmware memory to file */
2234 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2236 struct sdio_mmc_card *card = adapter->card;
2238 unsigned int reg, reg_start, reg_end;
2239 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2240 enum rdwr_status stat;
2243 if (!card->can_dump_fw)
2246 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2247 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2249 if (entry->mem_ptr) {
2250 vfree(entry->mem_ptr);
2251 entry->mem_ptr = NULL;
2253 entry->mem_size = 0;
2256 mwifiex_pm_wakeup_card(adapter);
2257 sdio_claim_host(card->func);
2259 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2261 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2262 if (stat == RDWR_STATUS_FAILURE)
2265 reg = card->reg->fw_dump_start;
2266 /* Read the number of the memories which will dump */
2267 dump_num = sdio_readb(card->func, reg, &ret);
2269 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2273 /* Read the length of every memory which will dump */
2274 for (idx = 0; idx < dump_num; idx++) {
2275 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2277 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2278 if (stat == RDWR_STATUS_FAILURE)
2282 reg = card->reg->fw_dump_start;
2283 for (i = 0; i < 4; i++) {
2284 read_reg = sdio_readb(card->func, reg, &ret);
2286 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2289 memory_size |= (read_reg << i*8);
2293 if (memory_size == 0) {
2294 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2295 ret = mwifiex_write_reg(adapter,
2296 card->reg->fw_dump_ctrl,
2299 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2305 mwifiex_dbg(adapter, DUMP,
2306 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2307 entry->mem_ptr = vmalloc(memory_size + 1);
2308 entry->mem_size = memory_size;
2309 if (!entry->mem_ptr) {
2310 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2314 dbg_ptr = entry->mem_ptr;
2315 end_ptr = dbg_ptr + memory_size;
2317 doneflag = entry->done_flag;
2318 mwifiex_dbg(adapter, DUMP,
2319 "Start %s output, please wait...\n",
2323 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2324 if (stat == RDWR_STATUS_FAILURE)
2327 reg_start = card->reg->fw_dump_start;
2328 reg_end = card->reg->fw_dump_end;
2329 for (reg = reg_start; reg <= reg_end; reg++) {
2330 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2332 mwifiex_dbg(adapter, ERROR,
2336 if (dbg_ptr < end_ptr)
2339 mwifiex_dbg(adapter, ERROR,
2340 "Allocated buf not enough\n");
2343 if (stat != RDWR_STATUS_DONE)
2346 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2347 entry->mem_name, dbg_ptr - entry->mem_ptr);
2351 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2354 sdio_release_host(card->func);
2357 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2359 struct sdio_mmc_card *card = adapter->card;
2360 struct memory_type_mapping *entry = &generic_mem_type_map[0];
2361 unsigned int reg, reg_start, reg_end;
2362 u8 start_flag = 0, done_flag = 0;
2363 u8 *dbg_ptr, *end_ptr;
2364 enum rdwr_status stat;
2365 int ret = -1, tries;
2367 if (!card->fw_dump_enh)
2370 if (entry->mem_ptr) {
2371 vfree(entry->mem_ptr);
2372 entry->mem_ptr = NULL;
2374 entry->mem_size = 0;
2376 mwifiex_pm_wakeup_card(adapter);
2377 sdio_claim_host(card->func);
2379 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2381 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2382 if (stat == RDWR_STATUS_FAILURE)
2385 reg_start = card->reg->fw_dump_start;
2386 reg_end = card->reg->fw_dump_end;
2387 for (reg = reg_start; reg <= reg_end; reg++) {
2388 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2389 start_flag = sdio_readb(card->func, reg, &ret);
2391 mwifiex_dbg(adapter, ERROR,
2395 if (start_flag == 0)
2397 if (tries == MAX_POLL_TRIES) {
2398 mwifiex_dbg(adapter, ERROR,
2399 "FW not ready to dump\n");
2404 usleep_range(100, 200);
2407 entry->mem_ptr = vmalloc(0xf0000 + 1);
2408 if (!entry->mem_ptr) {
2412 dbg_ptr = entry->mem_ptr;
2413 entry->mem_size = 0xf0000;
2414 end_ptr = dbg_ptr + entry->mem_size;
2416 done_flag = entry->done_flag;
2417 mwifiex_dbg(adapter, DUMP,
2418 "Start %s output, please wait...\n", entry->mem_name);
2421 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2422 if (stat == RDWR_STATUS_FAILURE)
2424 for (reg = reg_start; reg <= reg_end; reg++) {
2425 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2427 mwifiex_dbg(adapter, ERROR,
2432 if (dbg_ptr >= end_ptr) {
2435 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2439 memcpy(tmp_ptr, entry->mem_ptr,
2441 vfree(entry->mem_ptr);
2442 entry->mem_ptr = tmp_ptr;
2444 dbg_ptr = entry->mem_ptr + entry->mem_size;
2445 entry->mem_size += 0x4000;
2446 end_ptr = entry->mem_ptr + entry->mem_size;
2449 if (stat == RDWR_STATUS_DONE) {
2450 entry->mem_size = dbg_ptr - entry->mem_ptr;
2451 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2452 entry->mem_name, entry->mem_size);
2457 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2461 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2462 if (entry->mem_ptr) {
2463 vfree(entry->mem_ptr);
2464 entry->mem_ptr = NULL;
2466 entry->mem_size = 0;
2468 sdio_release_host(card->func);
2471 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2473 struct sdio_mmc_card *card = adapter->card;
2475 mwifiex_drv_info_dump(adapter);
2476 if (card->fw_dump_enh)
2477 mwifiex_sdio_generic_fw_dump(adapter);
2479 mwifiex_sdio_fw_dump(adapter);
2480 mwifiex_upload_device_dump(adapter);
2483 static void mwifiex_sdio_work(struct work_struct *work)
2485 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2487 mwifiex_sdio_device_dump_work(save_adapter);
2488 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2490 mwifiex_sdio_card_reset_work(save_adapter);
2493 static DECLARE_WORK(sdio_work, mwifiex_sdio_work);
2494 /* This function resets the card */
2495 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2497 save_adapter = adapter;
2498 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags))
2501 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
2503 schedule_work(&sdio_work);
2506 /* This function dumps FW information */
2507 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
2509 save_adapter = adapter;
2510 if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags))
2513 set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags);
2514 schedule_work(&sdio_work);
2517 /* Function to dump SDIO function registers and SDIO scratch registers in case
2521 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
2524 struct sdio_mmc_card *cardp = adapter->card;
2526 u8 count, func, data, index = 0, size = 0;
2527 u8 reg, reg_start, reg_end;
2528 char buf[256], *ptr;
2533 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
2535 mwifiex_pm_wakeup_card(adapter);
2537 sdio_claim_host(cardp->func);
2539 for (count = 0; count < 5; count++) {
2540 memset(buf, 0, sizeof(buf));
2545 /* Read the registers of SDIO function0 */
2551 /* Read the registers of SDIO function1 */
2553 reg_start = cardp->reg->func1_dump_reg_start;
2554 reg_end = cardp->reg->func1_dump_reg_end;
2559 reg_start = cardp->reg->func1_spec_reg_table[index++];
2560 size = cardp->reg->func1_spec_reg_num;
2561 reg_end = cardp->reg->func1_spec_reg_table[size-1];
2564 /* Read the scratch registers of SDIO function1 */
2568 reg_start = cardp->reg->func1_scratch_reg;
2569 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
2573 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
2574 func, reg_start, reg_end);
2576 ptr += sprintf(ptr, "SDIO Func%d: ", func);
2578 for (reg = reg_start; reg <= reg_end;) {
2580 data = sdio_f0_readb(cardp->func, reg, &ret);
2582 data = sdio_readb(cardp->func, reg, &ret);
2585 ptr += sprintf(ptr, "(%#x) ", reg);
2587 ptr += sprintf(ptr, "%02x ", data);
2589 ptr += sprintf(ptr, "ERR");
2593 if (count == 2 && reg < reg_end)
2594 reg = cardp->reg->func1_spec_reg_table[index++];
2599 mwifiex_dbg(adapter, MSG, "%s\n", buf);
2600 p += sprintf(p, "%s\n", buf);
2603 sdio_release_host(cardp->func);
2605 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
2610 static struct mwifiex_if_ops sdio_ops = {
2611 .init_if = mwifiex_init_sdio,
2612 .cleanup_if = mwifiex_cleanup_sdio,
2613 .check_fw_status = mwifiex_check_fw_status,
2614 .prog_fw = mwifiex_prog_fw_w_helper,
2615 .register_dev = mwifiex_register_dev,
2616 .unregister_dev = mwifiex_unregister_dev,
2617 .enable_int = mwifiex_sdio_enable_host_int,
2618 .disable_int = mwifiex_sdio_disable_host_int,
2619 .process_int_status = mwifiex_process_int_status,
2620 .host_to_card = mwifiex_sdio_host_to_card,
2621 .wakeup = mwifiex_pm_wakeup_card,
2622 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2625 .update_mp_end_port = mwifiex_update_mp_end_port,
2626 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2627 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2628 .event_complete = mwifiex_sdio_event_complete,
2629 .card_reset = mwifiex_sdio_card_reset,
2630 .reg_dump = mwifiex_sdio_reg_dump,
2631 .device_dump = mwifiex_sdio_device_dump,
2632 .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
2636 * This function initializes the SDIO driver.
2638 * This initiates the semaphore and registers the device with
2642 mwifiex_sdio_init_module(void)
2644 sema_init(&add_remove_card_sem, 1);
2646 /* Clear the flag in case user removes the card. */
2649 return sdio_register_driver(&mwifiex_sdio);
2653 * This function cleans up the SDIO driver.
2655 * The following major steps are followed for cleanup -
2656 * - Resume the device if its suspended
2657 * - Disconnect the device if connected
2658 * - Shutdown the firmware
2659 * - Unregister the device from SDIO bus.
2662 mwifiex_sdio_cleanup_module(void)
2664 if (!down_interruptible(&add_remove_card_sem))
2665 up(&add_remove_card_sem);
2667 /* Set the flag as user is removing this module. */
2669 cancel_work_sync(&sdio_work);
2671 sdio_unregister_driver(&mwifiex_sdio);
2674 module_init(mwifiex_sdio_init_module);
2675 module_exit(mwifiex_sdio_cleanup_module);
2677 MODULE_AUTHOR("Marvell International Ltd.");
2678 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2679 MODULE_VERSION(SDIO_VERSION);
2680 MODULE_LICENSE("GPL v2");