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;
51 static struct semaphore add_remove_card_sem;
53 static struct memory_type_mapping mem_type_mapping_tbl[] = {
54 {"ITCM", NULL, 0, 0xF0},
55 {"DTCM", NULL, 0, 0xF1},
56 {"SQRAM", NULL, 0, 0xF2},
57 {"APU", NULL, 0, 0xF3},
58 {"CIU", NULL, 0, 0xF4},
59 {"ICU", NULL, 0, 0xF5},
60 {"MAC", NULL, 0, 0xF6},
61 {"EXT7", NULL, 0, 0xF7},
62 {"EXT8", NULL, 0, 0xF8},
63 {"EXT9", NULL, 0, 0xF9},
64 {"EXT10", NULL, 0, 0xFA},
65 {"EXT11", NULL, 0, 0xFB},
66 {"EXT12", NULL, 0, 0xFC},
67 {"EXT13", NULL, 0, 0xFD},
68 {"EXTLAST", NULL, 0, 0xFE},
74 * This function probes an mwifiex device and registers it. It allocates
75 * the card structure, enables SDIO function number and initiates the
76 * device registration and initialization procedure by adding a logical
80 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
83 struct sdio_mmc_card *card = NULL;
85 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
86 func->vendor, func->device, func->class, func->num);
88 card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL);
94 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
96 if (id->driver_data) {
97 struct mwifiex_sdio_device *data = (void *)id->driver_data;
99 card->firmware = data->firmware;
100 card->reg = data->reg;
101 card->max_ports = data->max_ports;
102 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
103 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
104 card->has_control_mask = data->has_control_mask;
105 card->tx_buf_size = data->tx_buf_size;
106 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
107 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
108 card->supports_fw_dump = data->supports_fw_dump;
109 card->auto_tdls = data->auto_tdls;
112 sdio_claim_host(func);
113 ret = sdio_enable_func(func);
114 sdio_release_host(func);
117 pr_err("%s: failed to enable function\n", __func__);
122 if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
124 pr_err("%s: add card failed\n", __func__);
126 sdio_claim_host(func);
127 ret = sdio_disable_func(func);
128 sdio_release_host(func);
138 * Kernel needs to suspend all functions separately. Therefore all
139 * registered functions must have drivers with suspend and resume
140 * methods. Failing that the kernel simply removes the whole card.
142 * If already not resumed, this function turns on the traffic and
143 * sends a host sleep cancel request to the firmware.
145 static int mwifiex_sdio_resume(struct device *dev)
147 struct sdio_func *func = dev_to_sdio_func(dev);
148 struct sdio_mmc_card *card;
149 struct mwifiex_adapter *adapter;
150 mmc_pm_flag_t pm_flag = 0;
153 pm_flag = sdio_get_host_pm_caps(func);
154 card = sdio_get_drvdata(func);
155 if (!card || !card->adapter) {
156 pr_err("resume: invalid card or adapter\n");
160 pr_err("resume: sdio_func is not specified\n");
164 adapter = card->adapter;
166 if (!adapter->is_suspended) {
167 dev_warn(adapter->dev, "device already resumed\n");
171 adapter->is_suspended = false;
173 /* Disable Host Sleep */
174 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
183 * This function removes the interface and frees up the card structure.
186 mwifiex_sdio_remove(struct sdio_func *func)
188 struct sdio_mmc_card *card;
189 struct mwifiex_adapter *adapter;
190 struct mwifiex_private *priv;
192 pr_debug("info: SDIO func num=%d\n", func->num);
194 card = sdio_get_drvdata(func);
198 adapter = card->adapter;
199 if (!adapter || !adapter->priv_num)
202 cancel_work_sync(&adapter->iface_work);
205 if (adapter->is_suspended)
206 mwifiex_sdio_resume(adapter->dev);
208 mwifiex_deauthenticate_all(adapter);
210 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
211 mwifiex_disable_auto_ds(priv);
212 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
215 mwifiex_remove_card(card->adapter, &add_remove_card_sem);
221 * Kernel needs to suspend all functions separately. Therefore all
222 * registered functions must have drivers with suspend and resume
223 * methods. Failing that the kernel simply removes the whole card.
225 * If already not suspended, this function allocates and sends a host
226 * sleep activate request to the firmware and turns off the traffic.
228 static int mwifiex_sdio_suspend(struct device *dev)
230 struct sdio_func *func = dev_to_sdio_func(dev);
231 struct sdio_mmc_card *card;
232 struct mwifiex_adapter *adapter;
233 mmc_pm_flag_t pm_flag = 0;
237 pm_flag = sdio_get_host_pm_caps(func);
238 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
239 sdio_func_id(func), pm_flag);
240 if (!(pm_flag & MMC_PM_KEEP_POWER)) {
241 pr_err("%s: cannot remain alive while host is"
242 " suspended\n", sdio_func_id(func));
246 card = sdio_get_drvdata(func);
247 if (!card || !card->adapter) {
248 pr_err("suspend: invalid card or adapter\n");
252 pr_err("suspend: sdio_func is not specified\n");
256 adapter = card->adapter;
258 /* Enable the Host Sleep */
259 if (!mwifiex_enable_hs(adapter)) {
260 dev_err(adapter->dev, "cmd: failed to suspend\n");
261 adapter->hs_enabling = false;
265 dev_dbg(adapter->dev, "cmd: suspend with MMC_PM_KEEP_POWER\n");
266 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
268 /* Indicate device suspended */
269 adapter->is_suspended = true;
270 adapter->hs_enabling = false;
275 /* Device ID for SD8786 */
276 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116)
277 /* Device ID for SD8787 */
278 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119)
279 /* Device ID for SD8797 */
280 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129)
281 /* Device ID for SD8897 */
282 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d)
283 /* Device ID for SD8887 */
284 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135)
287 static const struct sdio_device_id mwifiex_ids[] = {
288 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786),
289 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
290 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787),
291 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
292 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797),
293 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
294 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897),
295 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
296 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887),
297 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
301 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
303 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
304 .suspend = mwifiex_sdio_suspend,
305 .resume = mwifiex_sdio_resume,
308 static struct sdio_driver mwifiex_sdio = {
309 .name = "mwifiex_sdio",
310 .id_table = mwifiex_ids,
311 .probe = mwifiex_sdio_probe,
312 .remove = mwifiex_sdio_remove,
314 .owner = THIS_MODULE,
315 .pm = &mwifiex_sdio_pm_ops,
319 /* Write data into SDIO card register. Caller claims SDIO device. */
321 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
324 sdio_writeb(func, data, reg, &ret);
329 * This function writes data into SDIO card register.
332 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
334 struct sdio_mmc_card *card = adapter->card;
337 sdio_claim_host(card->func);
338 ret = mwifiex_write_reg_locked(card->func, reg, data);
339 sdio_release_host(card->func);
345 * This function reads data from SDIO card register.
348 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
350 struct sdio_mmc_card *card = adapter->card;
354 sdio_claim_host(card->func);
355 val = sdio_readb(card->func, reg, &ret);
356 sdio_release_host(card->func);
364 * This function writes multiple data into SDIO card memory.
366 * This does not work in suspended mode.
369 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
370 u8 *buffer, u32 pkt_len, u32 port)
372 struct sdio_mmc_card *card = adapter->card;
375 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
376 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
379 BLOCK_MODE) ? (pkt_len /
380 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
381 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
383 if (adapter->is_suspended) {
384 dev_err(adapter->dev,
385 "%s: not allowed while suspended\n", __func__);
389 sdio_claim_host(card->func);
391 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
393 sdio_release_host(card->func);
399 * This function reads multiple data from SDIO card memory.
401 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
402 u32 len, u32 port, u8 claim)
404 struct sdio_mmc_card *card = adapter->card;
406 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
408 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
409 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
411 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
414 sdio_claim_host(card->func);
416 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
419 sdio_release_host(card->func);
425 * This function wakes up the card.
427 * A host power up command is written to the card configuration
428 * register to wake up the card.
430 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
432 dev_dbg(adapter->dev, "event: wakeup device...\n");
434 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
438 * This function is called after the card has woken up.
440 * The card configuration register is reset.
442 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
444 dev_dbg(adapter->dev, "cmd: wakeup device completed\n");
446 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
450 * This function is used to initialize IO ports for the
451 * chipsets supporting SDIO new mode eg SD8897.
453 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
456 struct sdio_mmc_card *card = adapter->card;
458 adapter->ioport = MEM_PORT;
460 /* enable sdio new mode */
461 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®))
463 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
464 reg | CMD53_NEW_MODE))
467 /* Configure cmd port and enable reading rx length from the register */
468 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®))
470 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
471 reg | CMD_PORT_RD_LEN_EN))
474 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
477 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®))
479 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
480 reg | CMD_PORT_AUTO_EN))
486 /* This function initializes the IO ports.
488 * The following operations are performed -
489 * - Read the IO ports (0, 1 and 2)
490 * - Set host interrupt Reset-To-Read to clear
491 * - Set auto re-enable interrupt
493 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
496 struct sdio_mmc_card *card = adapter->card;
500 if (card->supports_sdio_new_mode) {
501 if (mwifiex_init_sdio_new_mode(adapter))
506 /* Read the IO port */
507 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®))
508 adapter->ioport |= (reg & 0xff);
512 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®))
513 adapter->ioport |= ((reg & 0xff) << 8);
517 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®))
518 adapter->ioport |= ((reg & 0xff) << 16);
522 pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
524 /* Set Host interrupt reset to read to clear */
525 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®))
526 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
527 reg | card->reg->sdio_int_mask);
531 /* Dnld/Upld ready set to auto reset */
532 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®))
533 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
534 reg | AUTO_RE_ENABLE_INT);
542 * This function sends data to the card.
544 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
545 u8 *payload, u32 pkt_len, u32 port)
551 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
554 dev_err(adapter->dev, "host_to_card, write iomem"
555 " (%d) failed: %d\n", i, ret);
556 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
557 dev_err(adapter->dev, "write CFG reg failed\n");
560 if (i > MAX_WRITE_IOMEM_RETRY)
569 * This function gets the read port.
571 * If control port bit is set in MP read bitmap, the control port
572 * is returned, otherwise the current read port is returned and
573 * the value is increased (provided it does not reach the maximum
574 * limit, in which case it is reset to 1)
576 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
578 struct sdio_mmc_card *card = adapter->card;
579 const struct mwifiex_sdio_card_reg *reg = card->reg;
580 u32 rd_bitmap = card->mp_rd_bitmap;
582 dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
584 if (card->supports_sdio_new_mode) {
585 if (!(rd_bitmap & reg->data_port_mask))
588 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
592 if ((card->has_control_mask) &&
593 (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
594 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
596 dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%08x\n",
597 *port, card->mp_rd_bitmap);
601 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
604 /* We are now handling the SDIO data ports */
605 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
606 *port = card->curr_rd_port;
608 if (++card->curr_rd_port == card->max_ports)
609 card->curr_rd_port = reg->start_rd_port;
611 dev_dbg(adapter->dev,
612 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
613 *port, rd_bitmap, card->mp_rd_bitmap);
619 * This function gets the write port for data.
621 * The current write port is returned if available and the value is
622 * increased (provided it does not reach the maximum limit, in which
623 * case it is reset to 1)
625 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
627 struct sdio_mmc_card *card = adapter->card;
628 const struct mwifiex_sdio_card_reg *reg = card->reg;
629 u32 wr_bitmap = card->mp_wr_bitmap;
631 dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
633 if (!(wr_bitmap & card->mp_data_port_mask)) {
634 adapter->data_sent = true;
638 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
639 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
640 *port = card->curr_wr_port;
641 if (++card->curr_wr_port == card->mp_end_port)
642 card->curr_wr_port = reg->start_wr_port;
644 adapter->data_sent = true;
648 if ((card->has_control_mask) && (*port == CTRL_PORT)) {
649 dev_err(adapter->dev,
650 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
651 *port, card->curr_wr_port, wr_bitmap,
656 dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
657 *port, wr_bitmap, card->mp_wr_bitmap);
663 * This function polls the card status.
666 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
668 struct sdio_mmc_card *card = adapter->card;
672 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
673 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
675 else if ((cs & bits) == bits)
678 usleep_range(10, 20);
681 dev_err(adapter->dev, "poll card status failed, tries = %d\n", tries);
687 * This function reads the firmware status.
690 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
692 struct sdio_mmc_card *card = adapter->card;
693 const struct mwifiex_sdio_card_reg *reg = card->reg;
696 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
699 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
702 *dat = (u16) ((fws1 << 8) | fws0);
708 * This function disables the host interrupt.
710 * The host interrupt mask is read, the disable bit is reset and
711 * written back to the card host interrupt mask register.
713 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
715 struct sdio_mmc_card *card = adapter->card;
716 struct sdio_func *func = card->func;
718 sdio_claim_host(func);
719 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
720 sdio_release_irq(func);
721 sdio_release_host(func);
725 * This function reads the interrupt status from card.
727 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
729 struct sdio_mmc_card *card = adapter->card;
733 if (mwifiex_read_data_sync(adapter, card->mp_regs,
734 card->reg->max_mp_regs,
735 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
736 dev_err(adapter->dev, "read mp_regs failed\n");
740 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
743 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
744 * For SDIO new mode CMD port interrupts
745 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or
746 * UP_LD_CMD_PORT_HOST_INT_STATUS
747 * Clear the interrupt status register
749 dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg);
750 spin_lock_irqsave(&adapter->int_lock, flags);
751 adapter->int_status |= sdio_ireg;
752 spin_unlock_irqrestore(&adapter->int_lock, flags);
757 * SDIO interrupt handler.
759 * This function reads the interrupt status from firmware and handles
760 * the interrupt in current thread (ksdioirqd) right away.
763 mwifiex_sdio_interrupt(struct sdio_func *func)
765 struct mwifiex_adapter *adapter;
766 struct sdio_mmc_card *card;
768 card = sdio_get_drvdata(func);
769 if (!card || !card->adapter) {
770 pr_debug("int: func=%p card=%p adapter=%p\n",
771 func, card, card ? card->adapter : NULL);
774 adapter = card->adapter;
776 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
777 adapter->ps_state = PS_STATE_AWAKE;
779 mwifiex_interrupt_status(adapter);
780 mwifiex_main_process(adapter);
784 * This function enables the host interrupt.
786 * The host interrupt enable mask is written to the card
787 * host interrupt mask register.
789 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
791 struct sdio_mmc_card *card = adapter->card;
792 struct sdio_func *func = card->func;
795 sdio_claim_host(func);
797 /* Request the SDIO IRQ */
798 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
800 dev_err(adapter->dev, "claim irq failed: ret=%d\n", ret);
804 /* Simply write the mask to the register */
805 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
806 card->reg->host_int_enable);
808 dev_err(adapter->dev, "enable host interrupt failed\n");
809 sdio_release_irq(func);
813 sdio_release_host(func);
818 * This function sends a data buffer to the card.
820 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
821 u32 *type, u8 *buffer,
822 u32 npayload, u32 ioport)
828 dev_err(adapter->dev, "%s: buffer is NULL\n", __func__);
832 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
835 dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__,
840 nb = le16_to_cpu(*(__le16 *) (buffer));
842 dev_err(adapter->dev, "%s: invalid packet, nb=%d npayload=%d\n",
843 __func__, nb, npayload);
847 *type = le16_to_cpu(*(__le16 *) (buffer + 2));
853 * This function downloads the firmware to the card.
855 * Firmware is downloaded to the card in blocks. Every block download
856 * is tested for CRC errors, and retried a number of times before
859 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
860 struct mwifiex_fw_image *fw)
862 struct sdio_mmc_card *card = adapter->card;
863 const struct mwifiex_sdio_card_reg *reg = card->reg;
865 u8 *firmware = fw->fw_buf;
866 u32 firmware_len = fw->fw_len;
871 u32 txlen, tx_blocks = 0, tries;
875 dev_err(adapter->dev,
876 "firmware image not found! Terminating download\n");
880 dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n",
883 /* Assume that the allocated buffer is 8-byte aligned */
884 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
888 /* Perform firmware data transfer */
890 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
892 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
895 dev_err(adapter->dev, "FW download with helper:"
896 " poll status timeout @ %d\n", offset);
901 if (offset >= firmware_len)
904 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
905 ret = mwifiex_read_reg(adapter, reg->base_0_reg,
908 dev_err(adapter->dev,
909 "dev BASE0 register read failed: "
910 "base0=%#04X(%d). Terminating dnld\n",
914 ret = mwifiex_read_reg(adapter, reg->base_1_reg,
917 dev_err(adapter->dev,
918 "dev BASE1 register read failed: "
919 "base1=%#04X(%d). Terminating dnld\n",
923 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
928 usleep_range(10, 20);
933 } else if (len > MWIFIEX_UPLD_SIZE) {
934 dev_err(adapter->dev,
935 "FW dnld failed @ %d, invalid length %d\n",
945 if (i > MAX_WRITE_IOMEM_RETRY) {
946 dev_err(adapter->dev,
947 "FW dnld failed @ %d, over max retry\n",
952 dev_err(adapter->dev, "CRC indicated by the helper:"
953 " len = 0x%04X, txlen = %d\n", len, txlen);
955 /* Setting this to 0 to resend from same offset */
960 /* Set blocksize to transfer - checking for last
962 if (firmware_len - offset < txlen)
963 txlen = firmware_len - offset;
965 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
966 / MWIFIEX_SDIO_BLOCK_SIZE;
968 /* Copy payload to buffer */
969 memmove(fwbuf, &firmware[offset], txlen);
972 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
973 MWIFIEX_SDIO_BLOCK_SIZE,
976 dev_err(adapter->dev,
977 "FW download, write iomem (%d) failed @ %d\n",
979 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
980 dev_err(adapter->dev, "write CFG reg failed\n");
989 dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n",
999 * This function checks the firmware status in card.
1001 * The winner interface is also determined by this function.
1003 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
1006 struct sdio_mmc_card *card = adapter->card;
1012 /* Wait for firmware initialization event */
1013 for (tries = 0; tries < poll_num; tries++) {
1014 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
1017 if (firmware_stat == FIRMWARE_READY_SDIO) {
1027 if (mwifiex_read_reg
1028 (adapter, card->reg->status_reg_0, &winner_status))
1032 adapter->winner = 0;
1034 adapter->winner = 1;
1040 * This function decodes a received packet.
1042 * Based on the type, the packet is treated as either a data, or
1043 * a command response, or an event, and the correct handler
1044 * function is invoked.
1046 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1047 struct sk_buff *skb, u32 upld_typ)
1050 __le16 *curr_ptr = (__le16 *)skb->data;
1051 u16 pkt_len = le16_to_cpu(*curr_ptr);
1053 skb_trim(skb, pkt_len);
1054 skb_pull(skb, INTF_HEADER_LEN);
1057 case MWIFIEX_TYPE_DATA:
1058 dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n");
1059 if (adapter->rx_work_enabled) {
1060 skb_queue_tail(&adapter->rx_data_q, skb);
1061 adapter->data_received = true;
1062 atomic_inc(&adapter->rx_pending);
1064 mwifiex_handle_rx_packet(adapter, skb);
1068 case MWIFIEX_TYPE_CMD:
1069 dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n");
1070 /* take care of curr_cmd = NULL case */
1071 if (!adapter->curr_cmd) {
1072 cmd_buf = adapter->upld_buf;
1074 if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1075 mwifiex_process_sleep_confirm_resp(adapter,
1079 memcpy(cmd_buf, skb->data,
1080 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1083 dev_kfree_skb_any(skb);
1085 adapter->cmd_resp_received = true;
1086 adapter->curr_cmd->resp_skb = skb;
1090 case MWIFIEX_TYPE_EVENT:
1091 dev_dbg(adapter->dev, "info: --- Rx: Event ---\n");
1092 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data);
1094 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE))
1095 memcpy(adapter->event_body,
1096 skb->data + MWIFIEX_EVENT_HEADER_LEN,
1099 /* event cause has been saved to adapter->event_cause */
1100 adapter->event_received = true;
1101 adapter->event_skb = skb;
1106 dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ);
1107 dev_kfree_skb_any(skb);
1115 * This function transfers received packets from card to driver, performing
1116 * aggregation if required.
1118 * For data received on control port, or if aggregation is disabled, the
1119 * received buffers are uploaded as separate packets. However, if aggregation
1120 * is enabled and required, the buffers are copied onto an aggregation buffer,
1121 * provided there is space left, processed and finally uploaded.
1123 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1124 struct sk_buff *skb, u8 port)
1126 struct sdio_mmc_card *card = adapter->card;
1127 s32 f_do_rx_aggr = 0;
1128 s32 f_do_rx_cur = 0;
1130 struct sk_buff *skb_deaggr;
1132 u32 pkt_len, pkt_type, mport;
1134 u32 rx_len = skb->len;
1136 if ((card->has_control_mask) && (port == CTRL_PORT)) {
1137 /* Read the command Resp without aggr */
1138 dev_dbg(adapter->dev, "info: %s: no aggregation for cmd "
1139 "response\n", __func__);
1142 goto rx_curr_single;
1145 if (!card->mpa_rx.enabled) {
1146 dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n",
1150 goto rx_curr_single;
1153 if ((!card->has_control_mask && (card->mp_rd_bitmap &
1154 card->reg->data_port_mask)) ||
1155 (card->has_control_mask && (card->mp_rd_bitmap &
1156 (~((u32) CTRL_PORT_MASK))))) {
1157 /* Some more data RX pending */
1158 dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__);
1160 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1161 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) {
1164 /* No room in Aggr buf, do rx aggr now */
1169 /* Rx aggr not in progress */
1174 /* No more data RX pending */
1175 dev_dbg(adapter->dev, "info: %s: last packet\n", __func__);
1177 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1179 if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len))
1182 /* No room in Aggr buf, do rx aggr now */
1190 dev_dbg(adapter->dev, "info: current packet aggregation\n");
1191 /* Curr pkt can be aggregated */
1192 mp_rx_aggr_setup(card, skb, port);
1194 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1195 mp_rx_aggr_port_limit_reached(card)) {
1196 dev_dbg(adapter->dev, "info: %s: aggregated packet "
1197 "limit reached\n", __func__);
1198 /* No more pkts allowed in Aggr buf, rx it */
1204 /* do aggr RX now */
1205 dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n",
1206 card->mpa_rx.pkt_cnt);
1208 if (card->supports_sdio_new_mode) {
1212 for (i = 0, port_count = 0; i < card->max_ports; i++)
1213 if (card->mpa_rx.ports & BIT(i))
1216 /* Reading data from "start_port + 0" to "start_port +
1217 * port_count -1", so decrease the count by 1
1220 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1221 (port_count << 8)) + card->mpa_rx.start_port;
1223 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1224 (card->mpa_rx.ports << 4)) +
1225 card->mpa_rx.start_port;
1228 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1229 card->mpa_rx.buf_len, mport, 1))
1232 curr_ptr = card->mpa_rx.buf;
1234 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1236 /* get curr PKT len & type */
1237 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]);
1238 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]);
1240 /* copy pkt to deaggr buf */
1241 skb_deaggr = card->mpa_rx.skb_arr[pind];
1243 if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <=
1244 card->mpa_rx.len_arr[pind])) {
1246 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1248 skb_trim(skb_deaggr, pkt_len);
1250 /* Process de-aggr packet */
1251 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1254 dev_err(adapter->dev, "wrong aggr pkt:"
1255 " type=%d len=%d max_len=%d\n",
1257 card->mpa_rx.len_arr[pind]);
1258 dev_kfree_skb_any(skb_deaggr);
1260 curr_ptr += card->mpa_rx.len_arr[pind];
1262 MP_RX_AGGR_BUF_RESET(card);
1267 dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n",
1270 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1271 skb->data, skb->len,
1272 adapter->ioport + port))
1275 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1281 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1282 /* Multiport-aggregation transfer failed - cleanup */
1283 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1284 /* copy pkt to deaggr buf */
1285 skb_deaggr = card->mpa_rx.skb_arr[pind];
1286 dev_kfree_skb_any(skb_deaggr);
1288 MP_RX_AGGR_BUF_RESET(card);
1292 /* Single transfer pending. Free curr buff also */
1293 dev_kfree_skb_any(skb);
1299 * This function checks the current interrupt status.
1301 * The following interrupts are checked and handled by this function -
1304 * - Packets received
1306 * Since the firmware does not generate download ready interrupt if the
1307 * port updated is command port only, command sent interrupt checking
1308 * should be done manually, and for every SDIO interrupt.
1310 * In case of Rx packets received, the packets are uploaded from card to
1311 * host and processed accordingly.
1313 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1315 struct sdio_mmc_card *card = adapter->card;
1316 const struct mwifiex_sdio_card_reg *reg = card->reg;
1319 struct sk_buff *skb;
1320 u8 port = CTRL_PORT;
1321 u32 len_reg_l, len_reg_u;
1324 unsigned long flags;
1328 spin_lock_irqsave(&adapter->int_lock, flags);
1329 sdio_ireg = adapter->int_status;
1330 adapter->int_status = 0;
1331 spin_unlock_irqrestore(&adapter->int_lock, flags);
1336 /* Following interrupt is only for SDIO new mode */
1337 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1338 adapter->cmd_sent = false;
1340 /* Following interrupt is only for SDIO new mode */
1341 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1344 /* read the len of control packet */
1345 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1346 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1347 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1348 if (rx_len <= INTF_HEADER_LEN ||
1349 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1350 MWIFIEX_RX_DATA_BUF_SIZE)
1352 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1354 skb = dev_alloc_skb(rx_len);
1358 skb_put(skb, rx_len);
1360 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1361 skb->len, adapter->ioport |
1363 dev_err(adapter->dev,
1364 "%s: failed to card_to_host", __func__);
1365 dev_kfree_skb_any(skb);
1369 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
1370 (pkt_type != MWIFIEX_TYPE_EVENT))
1371 dev_err(adapter->dev,
1372 "%s:Received wrong packet on cmd port",
1375 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1378 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
1379 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
1380 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
1381 if (card->supports_sdio_new_mode) {
1383 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
1385 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
1387 card->mp_wr_bitmap = bitmap;
1389 dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%x\n",
1390 card->mp_wr_bitmap);
1391 if (adapter->data_sent &&
1392 (card->mp_wr_bitmap & card->mp_data_port_mask)) {
1393 dev_dbg(adapter->dev,
1394 "info: <--- Tx DONE Interrupt --->\n");
1395 adapter->data_sent = false;
1399 /* As firmware will not generate download ready interrupt if the port
1400 updated is command port only, cmd_sent should be done for any SDIO
1402 if (card->has_control_mask && adapter->cmd_sent) {
1403 /* Check if firmware has attach buffer at command port and
1404 update just that in wr_bit_map. */
1405 card->mp_wr_bitmap |=
1406 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
1407 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
1408 adapter->cmd_sent = false;
1411 dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
1412 adapter->cmd_sent, adapter->data_sent);
1413 if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
1414 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
1415 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
1416 if (card->supports_sdio_new_mode) {
1418 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
1420 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
1422 card->mp_rd_bitmap = bitmap;
1423 dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%x\n",
1424 card->mp_rd_bitmap);
1427 ret = mwifiex_get_rd_port(adapter, &port);
1429 dev_dbg(adapter->dev,
1430 "info: no more rd_port available\n");
1433 len_reg_l = reg->rd_len_p0_l + (port << 1);
1434 len_reg_u = reg->rd_len_p0_u + (port << 1);
1435 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
1436 rx_len |= (u16) card->mp_regs[len_reg_l];
1437 dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n",
1440 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
1441 1) / MWIFIEX_SDIO_BLOCK_SIZE;
1442 if (rx_len <= INTF_HEADER_LEN ||
1443 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1444 MWIFIEX_RX_DATA_BUF_SIZE) {
1445 dev_err(adapter->dev, "invalid rx_len=%d\n",
1449 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1451 skb = dev_alloc_skb(rx_len);
1454 dev_err(adapter->dev, "%s: failed to alloc skb",
1459 skb_put(skb, rx_len);
1461 dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n",
1464 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb,
1466 dev_err(adapter->dev, "card_to_host_mpa failed:"
1467 " int status=%#x\n", sdio_ireg);
1477 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1478 dev_err(adapter->dev, "read CFG reg failed\n");
1480 dev_dbg(adapter->dev, "info: CFG reg val = %d\n", cr);
1482 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
1483 dev_err(adapter->dev, "write CFG reg failed\n");
1485 dev_dbg(adapter->dev, "info: write success\n");
1487 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
1488 dev_err(adapter->dev, "read CFG reg failed\n");
1490 dev_dbg(adapter->dev, "info: CFG reg val =%x\n", cr);
1496 * This function aggregates transmission buffers in driver and downloads
1497 * the aggregated packet to card.
1499 * The individual packets are aggregated by copying into an aggregation
1500 * buffer and then downloaded to the card. Previous unsent packets in the
1501 * aggregation buffer are pre-copied first before new packets are added.
1502 * Aggregation is done till there is space left in the aggregation buffer,
1503 * or till new packets are available.
1505 * The function will only download the packet to the card when aggregation
1506 * stops, otherwise it will just aggregate the packet in aggregation buffer
1509 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
1510 u8 *payload, u32 pkt_len, u32 port,
1513 struct sdio_mmc_card *card = adapter->card;
1515 s32 f_send_aggr_buf = 0;
1516 s32 f_send_cur_buf = 0;
1517 s32 f_precopy_cur_buf = 0;
1518 s32 f_postcopy_cur_buf = 0;
1521 if (!card->mpa_tx.enabled ||
1522 (card->has_control_mask && (port == CTRL_PORT)) ||
1523 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
1524 dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n",
1528 goto tx_curr_single;
1532 /* More pkt in TX queue */
1533 dev_dbg(adapter->dev, "info: %s: more packets in queue.\n",
1536 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1537 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
1538 f_precopy_cur_buf = 1;
1540 if (!(card->mp_wr_bitmap &
1541 (1 << card->curr_wr_port)) ||
1542 !MP_TX_AGGR_BUF_HAS_ROOM(
1543 card, pkt_len + next_pkt_len))
1544 f_send_aggr_buf = 1;
1546 /* No room in Aggr buf, send it */
1547 f_send_aggr_buf = 1;
1549 if (!(card->mp_wr_bitmap &
1550 (1 << card->curr_wr_port)))
1553 f_postcopy_cur_buf = 1;
1556 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
1557 (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1558 f_precopy_cur_buf = 1;
1563 /* Last pkt in TX queue */
1564 dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n",
1567 if (MP_TX_AGGR_IN_PROGRESS(card)) {
1568 /* some packs in Aggr buf already */
1569 f_send_aggr_buf = 1;
1571 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
1572 f_precopy_cur_buf = 1;
1574 /* No room in Aggr buf, send it */
1581 if (f_precopy_cur_buf) {
1582 dev_dbg(adapter->dev, "data: %s: precopy current buffer\n",
1584 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1586 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
1587 mp_tx_aggr_port_limit_reached(card))
1588 /* No more pkts allowed in Aggr buf, send it */
1589 f_send_aggr_buf = 1;
1592 if (f_send_aggr_buf) {
1593 dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n",
1595 card->mpa_tx.start_port, card->mpa_tx.ports);
1596 if (card->supports_sdio_new_mode) {
1600 for (i = 0, port_count = 0; i < card->max_ports; i++)
1601 if (card->mpa_tx.ports & BIT(i))
1604 /* Writing data from "start_port + 0" to "start_port +
1605 * port_count -1", so decrease the count by 1
1608 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1609 (port_count << 8)) + card->mpa_tx.start_port;
1611 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1612 (card->mpa_tx.ports << 4)) +
1613 card->mpa_tx.start_port;
1616 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
1617 card->mpa_tx.buf_len, mport);
1619 MP_TX_AGGR_BUF_RESET(card);
1623 if (f_send_cur_buf) {
1624 dev_dbg(adapter->dev, "data: %s: send current buffer %d\n",
1626 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
1627 adapter->ioport + port);
1630 if (f_postcopy_cur_buf) {
1631 dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n",
1633 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
1640 * This function downloads data from driver to card.
1642 * Both commands and data packets are transferred to the card by this
1645 * This function adds the SDIO specific header to the front of the buffer
1646 * before transferring. The header contains the length of the packet and
1647 * the type. The firmware handles the packets based upon this set type.
1649 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
1650 u8 type, struct sk_buff *skb,
1651 struct mwifiex_tx_param *tx_param)
1653 struct sdio_mmc_card *card = adapter->card;
1657 u32 port = CTRL_PORT;
1658 u8 *payload = (u8 *)skb->data;
1659 u32 pkt_len = skb->len;
1661 /* Allocate buffer and copy payload */
1662 blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
1663 buf_block_len = (pkt_len + blk_size - 1) / blk_size;
1664 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len);
1665 *(__le16 *)&payload[2] = cpu_to_le16(type);
1668 * This is SDIO specific header
1670 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
1671 * MWIFIEX_TYPE_EVENT = 3)
1673 if (type == MWIFIEX_TYPE_DATA) {
1674 ret = mwifiex_get_wr_port_data(adapter, &port);
1676 dev_err(adapter->dev, "%s: no wr_port available\n",
1681 adapter->cmd_sent = true;
1682 /* Type must be MWIFIEX_TYPE_CMD */
1684 if (pkt_len <= INTF_HEADER_LEN ||
1685 pkt_len > MWIFIEX_UPLD_SIZE)
1686 dev_err(adapter->dev, "%s: payload=%p, nb=%d\n",
1687 __func__, payload, pkt_len);
1689 if (card->supports_sdio_new_mode)
1690 port = CMD_PORT_SLCT;
1693 /* Transfer data to card */
1694 pkt_len = buf_block_len * blk_size;
1697 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1698 port, tx_param->next_pkt_len
1701 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
1705 if (type == MWIFIEX_TYPE_CMD)
1706 adapter->cmd_sent = false;
1707 if (type == MWIFIEX_TYPE_DATA) {
1708 adapter->data_sent = false;
1709 /* restore curr_wr_port in error cases */
1710 card->curr_wr_port = port;
1711 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
1714 if (type == MWIFIEX_TYPE_DATA) {
1715 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
1716 adapter->data_sent = true;
1718 adapter->data_sent = false;
1726 * This function allocates the MPA Tx and Rx buffers.
1728 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
1729 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
1731 struct sdio_mmc_card *card = adapter->card;
1734 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
1735 if (!card->mpa_tx.buf) {
1740 card->mpa_tx.buf_size = mpa_tx_buf_size;
1742 card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL);
1743 if (!card->mpa_rx.buf) {
1748 card->mpa_rx.buf_size = mpa_rx_buf_size;
1752 kfree(card->mpa_tx.buf);
1753 kfree(card->mpa_rx.buf);
1760 * This function unregisters the SDIO device.
1762 * The SDIO IRQ is released, the function is disabled and driver
1763 * data is set to null.
1766 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
1768 struct sdio_mmc_card *card = adapter->card;
1770 if (adapter->card) {
1771 sdio_claim_host(card->func);
1772 sdio_disable_func(card->func);
1773 sdio_release_host(card->func);
1778 * This function registers the SDIO device.
1780 * SDIO IRQ is claimed, block size is set and driver data is initialized.
1782 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
1785 struct sdio_mmc_card *card = adapter->card;
1786 struct sdio_func *func = card->func;
1788 /* save adapter pointer in card */
1789 card->adapter = adapter;
1790 adapter->tx_buf_size = card->tx_buf_size;
1792 sdio_claim_host(func);
1794 /* Set block size */
1795 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
1796 sdio_release_host(func);
1798 pr_err("cannot set SDIO block size\n");
1803 adapter->dev = &func->dev;
1805 strcpy(adapter->fw_name, card->firmware);
1806 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
1807 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
1813 * This function initializes the SDIO driver.
1815 * The following initializations steps are followed -
1816 * - Read the Host interrupt status register to acknowledge
1817 * the first interrupt got from bootloader
1818 * - Disable host interrupt mask register
1820 * - Initialize SDIO variables in card
1821 * - Allocate MP registers
1822 * - Allocate MPA Tx and Rx buffers
1824 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
1826 struct sdio_mmc_card *card = adapter->card;
1827 const struct mwifiex_sdio_card_reg *reg = card->reg;
1831 sdio_set_drvdata(card->func, card);
1834 * Read the host_int_status_reg for ACK the first interrupt got
1835 * from the bootloader. If we don't do this we get a interrupt
1836 * as soon as we register the irq.
1838 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
1840 /* Get SDIO ioport */
1841 mwifiex_init_sdio_ioport(adapter);
1843 /* Initialize SDIO variables in card */
1844 card->mp_rd_bitmap = 0;
1845 card->mp_wr_bitmap = 0;
1846 card->curr_rd_port = reg->start_rd_port;
1847 card->curr_wr_port = reg->start_wr_port;
1849 card->mp_data_port_mask = reg->data_port_mask;
1851 card->mpa_tx.buf_len = 0;
1852 card->mpa_tx.pkt_cnt = 0;
1853 card->mpa_tx.start_port = 0;
1855 card->mpa_tx.enabled = 1;
1856 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1858 card->mpa_rx.buf_len = 0;
1859 card->mpa_rx.pkt_cnt = 0;
1860 card->mpa_rx.start_port = 0;
1862 card->mpa_rx.enabled = 1;
1863 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
1865 /* Allocate buffers for SDIO MP-A */
1866 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
1870 /* Allocate skb pointer buffers */
1871 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) *
1872 card->mp_agg_pkt_limit, GFP_KERNEL);
1873 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) *
1874 card->mp_agg_pkt_limit, GFP_KERNEL);
1875 ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
1876 card->mp_tx_agg_buf_size,
1877 card->mp_rx_agg_buf_size);
1879 dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n");
1880 kfree(card->mp_regs);
1884 adapter->auto_tdls = card->auto_tdls;
1889 * This function resets the MPA Tx and Rx buffers.
1891 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
1893 struct sdio_mmc_card *card = adapter->card;
1895 MP_TX_AGGR_BUF_RESET(card);
1896 MP_RX_AGGR_BUF_RESET(card);
1900 * This function cleans up the allocated card buffers.
1902 * The following are freed by this function -
1907 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
1909 struct sdio_mmc_card *card = adapter->card;
1911 kfree(card->mp_regs);
1912 kfree(card->mpa_rx.skb_arr);
1913 kfree(card->mpa_rx.len_arr);
1914 kfree(card->mpa_tx.buf);
1915 kfree(card->mpa_rx.buf);
1916 sdio_set_drvdata(card->func, NULL);
1921 * This function updates the MP end port in card.
1924 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
1926 struct sdio_mmc_card *card = adapter->card;
1927 const struct mwifiex_sdio_card_reg *reg = card->reg;
1930 card->mp_end_port = port;
1932 card->mp_data_port_mask = reg->data_port_mask;
1934 if (reg->start_wr_port) {
1935 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
1936 card->mp_data_port_mask &=
1937 ~(1 << (card->max_ports - i));
1940 card->curr_wr_port = reg->start_wr_port;
1942 dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n",
1943 port, card->mp_data_port_mask);
1946 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
1948 struct sdio_mmc_card *card = adapter->card;
1949 struct mmc_host *target = card->func->card->host;
1951 /* The actual reset operation must be run outside of driver thread.
1952 * This is because mmc_remove_host() will cause the device to be
1953 * instantly destroyed, and the driver then needs to end its thread,
1954 * leading to a deadlock.
1956 * We run it in a totally independent workqueue.
1959 pr_err("Resetting card...\n");
1960 mmc_remove_host(target);
1961 /* 20ms delay is based on experiment with sdhci controller */
1963 target->rescan_entered = 0; /* rescan non-removable cards */
1964 mmc_add_host(target);
1967 /* This function read/write firmware */
1969 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
1972 struct sdio_mmc_card *card = adapter->card;
1976 sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1979 dev_err(adapter->dev, "SDIO Write ERR\n");
1980 return RDWR_STATUS_FAILURE;
1982 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1983 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1986 dev_err(adapter->dev, "SDIO read err\n");
1987 return RDWR_STATUS_FAILURE;
1989 if (ctrl_data == FW_DUMP_DONE)
1991 if (doneflag && ctrl_data == doneflag)
1992 return RDWR_STATUS_DONE;
1993 if (ctrl_data != FW_DUMP_HOST_READY) {
1994 dev_info(adapter->dev,
1995 "The ctrl reg was changed, re-try again!\n");
1996 sdio_writeb(card->func, FW_DUMP_HOST_READY,
1997 card->reg->fw_dump_ctrl, &ret);
1999 dev_err(adapter->dev, "SDIO write err\n");
2000 return RDWR_STATUS_FAILURE;
2003 usleep_range(100, 200);
2005 if (ctrl_data == FW_DUMP_HOST_READY) {
2006 dev_err(adapter->dev, "Fail to pull ctrl_data\n");
2007 return RDWR_STATUS_FAILURE;
2010 return RDWR_STATUS_SUCCESS;
2013 /* This function dump firmware memory to file */
2014 static void mwifiex_sdio_fw_dump_work(struct work_struct *work)
2016 struct mwifiex_adapter *adapter =
2017 container_of(work, struct mwifiex_adapter, iface_work);
2018 struct sdio_mmc_card *card = adapter->card;
2020 unsigned int reg, reg_start, reg_end;
2021 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2022 enum rdwr_status stat;
2024 static char *env[] = { "DRIVER=mwifiex_sdio", "EVENT=fw_dump", NULL };
2026 if (!card->supports_fw_dump)
2029 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2030 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2032 if (entry->mem_ptr) {
2033 vfree(entry->mem_ptr);
2034 entry->mem_ptr = NULL;
2036 entry->mem_size = 0;
2039 mwifiex_pm_wakeup_card(adapter);
2040 sdio_claim_host(card->func);
2042 dev_info(adapter->dev, "== mwifiex firmware dump start ==\n");
2044 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2045 if (stat == RDWR_STATUS_FAILURE)
2048 reg = card->reg->fw_dump_start;
2049 /* Read the number of the memories which will dump */
2050 dump_num = sdio_readb(card->func, reg, &ret);
2052 dev_err(adapter->dev, "SDIO read memory length err\n");
2056 /* Read the length of every memory which will dump */
2057 for (idx = 0; idx < dump_num; idx++) {
2058 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2060 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2061 if (stat == RDWR_STATUS_FAILURE)
2065 reg = card->reg->fw_dump_start;
2066 for (i = 0; i < 4; i++) {
2067 read_reg = sdio_readb(card->func, reg, &ret);
2069 dev_err(adapter->dev, "SDIO read err\n");
2072 memory_size |= (read_reg << i*8);
2076 if (memory_size == 0) {
2077 dev_info(adapter->dev, "Firmware dump Finished!\n");
2081 dev_info(adapter->dev,
2082 "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2083 entry->mem_ptr = vmalloc(memory_size + 1);
2084 entry->mem_size = memory_size;
2085 if (!entry->mem_ptr) {
2086 dev_err(adapter->dev, "Vmalloc %s failed\n",
2090 dbg_ptr = entry->mem_ptr;
2091 end_ptr = dbg_ptr + memory_size;
2093 doneflag = entry->done_flag;
2094 dev_info(adapter->dev, "Start %s output, please wait...\n",
2098 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2099 if (stat == RDWR_STATUS_FAILURE)
2102 reg_start = card->reg->fw_dump_start;
2103 reg_end = card->reg->fw_dump_end;
2104 for (reg = reg_start; reg <= reg_end; reg++) {
2105 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2107 dev_err(adapter->dev,
2111 if (dbg_ptr < end_ptr)
2114 dev_err(adapter->dev,
2115 "Allocated buf not enough\n");
2118 if (stat != RDWR_STATUS_DONE)
2121 dev_info(adapter->dev, "%s done: size=0x%tx\n",
2122 entry->mem_name, dbg_ptr - entry->mem_ptr);
2126 dev_info(adapter->dev, "== mwifiex firmware dump end ==\n");
2128 kobject_uevent_env(&adapter->wiphy->dev.kobj, KOBJ_CHANGE, env);
2131 sdio_release_host(card->func);
2132 adapter->curr_mem_idx = 0;
2135 static void mwifiex_sdio_work(struct work_struct *work)
2137 struct mwifiex_adapter *adapter =
2138 container_of(work, struct mwifiex_adapter, iface_work);
2140 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2141 &adapter->iface_work_flags))
2142 mwifiex_sdio_card_reset_work(adapter);
2143 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_FW_DUMP,
2144 &adapter->iface_work_flags))
2145 mwifiex_sdio_fw_dump_work(work);
2148 /* This function resets the card */
2149 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
2151 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &adapter->iface_work_flags))
2154 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &adapter->iface_work_flags);
2156 schedule_work(&adapter->iface_work);
2159 /* This function dumps FW information */
2160 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2162 if (test_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &adapter->iface_work_flags))
2165 set_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &adapter->iface_work_flags);
2166 schedule_work(&adapter->iface_work);
2169 static struct mwifiex_if_ops sdio_ops = {
2170 .init_if = mwifiex_init_sdio,
2171 .cleanup_if = mwifiex_cleanup_sdio,
2172 .check_fw_status = mwifiex_check_fw_status,
2173 .prog_fw = mwifiex_prog_fw_w_helper,
2174 .register_dev = mwifiex_register_dev,
2175 .unregister_dev = mwifiex_unregister_dev,
2176 .enable_int = mwifiex_sdio_enable_host_int,
2177 .disable_int = mwifiex_sdio_disable_host_int,
2178 .process_int_status = mwifiex_process_int_status,
2179 .host_to_card = mwifiex_sdio_host_to_card,
2180 .wakeup = mwifiex_pm_wakeup_card,
2181 .wakeup_complete = mwifiex_pm_wakeup_card_complete,
2184 .update_mp_end_port = mwifiex_update_mp_end_port,
2185 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
2186 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
2187 .event_complete = mwifiex_sdio_event_complete,
2188 .card_reset = mwifiex_sdio_card_reset,
2189 .iface_work = mwifiex_sdio_work,
2190 .fw_dump = mwifiex_sdio_fw_dump,
2194 * This function initializes the SDIO driver.
2196 * This initiates the semaphore and registers the device with
2200 mwifiex_sdio_init_module(void)
2202 sema_init(&add_remove_card_sem, 1);
2204 /* Clear the flag in case user removes the card. */
2207 return sdio_register_driver(&mwifiex_sdio);
2211 * This function cleans up the SDIO driver.
2213 * The following major steps are followed for cleanup -
2214 * - Resume the device if its suspended
2215 * - Disconnect the device if connected
2216 * - Shutdown the firmware
2217 * - Unregister the device from SDIO bus.
2220 mwifiex_sdio_cleanup_module(void)
2222 if (!down_interruptible(&add_remove_card_sem))
2223 up(&add_remove_card_sem);
2225 /* Set the flag as user is removing this module. */
2228 sdio_unregister_driver(&mwifiex_sdio);
2231 module_init(mwifiex_sdio_init_module);
2232 module_exit(mwifiex_sdio_cleanup_module);
2234 MODULE_AUTHOR("Marvell International Ltd.");
2235 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
2236 MODULE_VERSION(SDIO_VERSION);
2237 MODULE_LICENSE("GPL v2");
2238 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME);
2239 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME);
2240 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME);
2241 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME);
2242 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME);