2 * Copyright (c) 2014 Redpine Signals Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <linux/module.h>
20 #include "rsi_common.h"
24 /* Default operating mode is wlan STA + BT */
25 static u16 dev_oper_mode = DEV_OPMODE_STA_BT_DUAL;
26 module_param(dev_oper_mode, ushort, 0444);
27 MODULE_PARM_DESC(dev_oper_mode,
28 "1[Wi-Fi], 4[BT], 8[BT LE], 5[Wi-Fi STA + BT classic]\n"
29 "9[Wi-Fi STA + BT LE], 13[Wi-Fi STA + BT classic + BT LE]\n"
30 "6[AP + BT classic], 14[AP + BT classic + BT LE]");
33 * rsi_sdio_set_cmd52_arg() - This function prepares cmd 52 read/write arg.
35 * @func: function number
36 * @raw: indicates whether to perform read after write
37 * @address: address to which to read/write
38 * @writedata: data to write
42 static u32 rsi_sdio_set_cmd52_arg(bool rw,
48 return ((rw & 1) << 31) | ((func & 0x7) << 28) |
49 ((raw & 1) << 27) | (1 << 26) |
50 ((address & 0x1FFFF) << 9) | (1 << 8) |
55 * rsi_cmd52writebyte() - This function issues cmd52 byte write onto the card.
56 * @card: Pointer to the mmc_card.
57 * @address: Address to write.
58 * @byte: Data to write.
60 * Return: Write status.
62 static int rsi_cmd52writebyte(struct mmc_card *card,
66 struct mmc_command io_cmd;
69 memset(&io_cmd, 0, sizeof(io_cmd));
70 arg = rsi_sdio_set_cmd52_arg(1, 0, 0, address, byte);
71 io_cmd.opcode = SD_IO_RW_DIRECT;
73 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
75 return mmc_wait_for_cmd(card->host, &io_cmd, 0);
79 * rsi_cmd52readbyte() - This function issues cmd52 byte read onto the card.
80 * @card: Pointer to the mmc_card.
81 * @address: Address to read from.
82 * @byte: Variable to store read value.
84 * Return: Read status.
86 static int rsi_cmd52readbyte(struct mmc_card *card,
90 struct mmc_command io_cmd;
94 memset(&io_cmd, 0, sizeof(io_cmd));
95 arg = rsi_sdio_set_cmd52_arg(0, 0, 0, address, 0);
96 io_cmd.opcode = SD_IO_RW_DIRECT;
98 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
100 err = mmc_wait_for_cmd(card->host, &io_cmd, 0);
101 if ((!err) && (byte))
102 *byte = io_cmd.resp[0] & 0xFF;
107 * rsi_issue_sdiocommand() - This function issues sdio commands.
108 * @func: Pointer to the sdio_func structure.
109 * @opcode: Opcode value.
110 * @arg: Arguments to pass.
111 * @flags: Flags which are set.
112 * @resp: Pointer to store response.
114 * Return: err: command status as 0 or -1.
116 static int rsi_issue_sdiocommand(struct sdio_func *func,
122 struct mmc_command cmd;
123 struct mmc_host *host;
126 host = func->card->host;
128 memset(&cmd, 0, sizeof(struct mmc_command));
132 err = mmc_wait_for_cmd(host, &cmd, 3);
134 if ((!err) && (resp))
141 * rsi_handle_interrupt() - This function is called upon the occurrence
143 * @function: Pointer to the sdio_func structure.
147 static void rsi_handle_interrupt(struct sdio_func *function)
149 struct rsi_hw *adapter = sdio_get_drvdata(function);
150 struct rsi_91x_sdiodev *dev =
151 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
153 if (adapter->priv->fsm_state == FSM_FW_NOT_LOADED)
156 rsi_set_event(&dev->rx_thread.event);
160 * rsi_reset_card() - This function resets and re-initializes the card.
161 * @pfunction: Pointer to the sdio_func structure.
165 static void rsi_reset_card(struct sdio_func *pfunction)
169 struct mmc_card *card = pfunction->card;
170 struct mmc_host *host = card->host;
175 /* Reset 9110 chip */
176 ret = rsi_cmd52writebyte(pfunction->card,
180 /* Card will not send any response as it is getting reset immediately
181 * Hence expect a timeout status from host controller
183 if (ret != -ETIMEDOUT)
184 rsi_dbg(ERR_ZONE, "%s: Reset failed : %d\n", __func__, ret);
186 /* Wait for few milli seconds to get rid of residue charges if any */
189 /* Initialize the SDIO card */
190 host->ios.chip_select = MMC_CS_DONTCARE;
191 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
192 host->ios.power_mode = MMC_POWER_UP;
193 host->ios.bus_width = MMC_BUS_WIDTH_1;
194 host->ios.timing = MMC_TIMING_LEGACY;
195 host->ops->set_ios(host, &host->ios);
198 * This delay should be sufficient to allow the power supply
199 * to reach the minimum voltage.
203 host->ios.clock = host->f_min;
204 host->ios.power_mode = MMC_POWER_ON;
205 host->ops->set_ios(host, &host->ios);
208 * This delay must be at least 74 clock sizes, or 1 ms, or the
209 * time required to reach a stable voltage.
213 /* Issue CMD0. Goto idle state */
214 host->ios.chip_select = MMC_CS_HIGH;
215 host->ops->set_ios(host, &host->ios);
217 err = rsi_issue_sdiocommand(pfunction,
220 (MMC_RSP_NONE | MMC_CMD_BC),
222 host->ios.chip_select = MMC_CS_DONTCARE;
223 host->ops->set_ios(host, &host->ios);
225 host->use_spi_crc = 0;
228 rsi_dbg(ERR_ZONE, "%s: CMD0 failed : %d\n", __func__, err);
230 /* Issue CMD5, arg = 0 */
231 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 0,
232 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
234 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
237 /* Issue CMD5, arg = ocr. Wait till card is ready */
238 for (i = 0; i < 100; i++) {
239 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND,
241 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
243 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
248 if (resp & MMC_CARD_BUSY)
253 if ((i == 100) || (err)) {
254 rsi_dbg(ERR_ZONE, "%s: card in not ready : %d %d\n",
259 /* Issue CMD3, get RCA */
260 err = rsi_issue_sdiocommand(pfunction,
261 SD_SEND_RELATIVE_ADDR,
263 (MMC_RSP_R6 | MMC_CMD_BCR),
266 rsi_dbg(ERR_ZONE, "%s: CMD3 failed : %d\n", __func__, err);
270 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
271 host->ops->set_ios(host, &host->ios);
273 /* Issue CMD7, select card */
274 err = rsi_issue_sdiocommand(pfunction,
277 (MMC_RSP_R1 | MMC_CMD_AC),
280 rsi_dbg(ERR_ZONE, "%s: CMD7 failed : %d\n", __func__, err);
284 /* Enable high speed */
285 if (card->host->caps & MMC_CAP_SD_HIGHSPEED) {
286 rsi_dbg(ERR_ZONE, "%s: Set high speed mode\n", __func__);
287 err = rsi_cmd52readbyte(card, SDIO_CCCR_SPEED, &cmd52_resp);
289 rsi_dbg(ERR_ZONE, "%s: CCCR speed reg read failed: %d\n",
292 err = rsi_cmd52writebyte(card,
294 (cmd52_resp | SDIO_SPEED_EHS));
297 "%s: CCR speed regwrite failed %d\n",
301 host->ios.timing = MMC_TIMING_SD_HS;
302 host->ops->set_ios(host, &host->ios);
307 if (mmc_card_hs(card))
310 clock = card->cis.max_dtr;
312 if (clock > host->f_max)
315 host->ios.clock = clock;
316 host->ops->set_ios(host, &host->ios);
318 if (card->host->caps & MMC_CAP_4_BIT_DATA) {
319 /* CMD52: Set bus width & disable card detect resistor */
320 err = rsi_cmd52writebyte(card,
322 (SDIO_BUS_CD_DISABLE |
323 SDIO_BUS_WIDTH_4BIT));
325 rsi_dbg(ERR_ZONE, "%s: Set bus mode failed : %d\n",
329 host->ios.bus_width = MMC_BUS_WIDTH_4;
330 host->ops->set_ios(host, &host->ios);
335 * rsi_setclock() - This function sets the clock frequency.
336 * @adapter: Pointer to the adapter structure.
337 * @freq: Clock frequency.
341 static void rsi_setclock(struct rsi_hw *adapter, u32 freq)
343 struct rsi_91x_sdiodev *dev =
344 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
345 struct mmc_host *host = dev->pfunction->card->host;
349 if (clock > host->f_max)
351 host->ios.clock = clock;
352 host->ops->set_ios(host, &host->ios);
356 * rsi_setblocklength() - This function sets the host block length.
357 * @adapter: Pointer to the adapter structure.
358 * @length: Block length to be set.
360 * Return: status: 0 on success, -1 on failure.
362 static int rsi_setblocklength(struct rsi_hw *adapter, u32 length)
364 struct rsi_91x_sdiodev *dev =
365 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
367 rsi_dbg(INIT_ZONE, "%s: Setting the block length\n", __func__);
369 status = sdio_set_block_size(dev->pfunction, length);
370 dev->pfunction->max_blksize = 256;
371 adapter->block_size = dev->pfunction->max_blksize;
374 "%s: Operational blk length is %d\n", __func__, length);
379 * rsi_setupcard() - This function queries and sets the card's features.
380 * @adapter: Pointer to the adapter structure.
382 * Return: status: 0 on success, -1 on failure.
384 static int rsi_setupcard(struct rsi_hw *adapter)
386 struct rsi_91x_sdiodev *dev =
387 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
390 rsi_setclock(adapter, 50000);
392 dev->tx_blk_size = 256;
393 status = rsi_setblocklength(adapter, dev->tx_blk_size);
396 "%s: Unable to set block length\n", __func__);
401 * rsi_sdio_read_register() - This function reads one byte of information
403 * @adapter: Pointer to the adapter structure.
404 * @addr: Address of the register.
405 * @data: Pointer to the data that stores the data read.
407 * Return: 0 on success, -1 on failure.
409 int rsi_sdio_read_register(struct rsi_hw *adapter,
413 struct rsi_91x_sdiodev *dev =
414 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
418 if (likely(dev->sdio_irq_task != current))
419 sdio_claim_host(dev->pfunction);
422 *data = sdio_f0_readb(dev->pfunction, addr, &status);
424 *data = sdio_readb(dev->pfunction, addr, &status);
426 if (likely(dev->sdio_irq_task != current))
427 sdio_release_host(dev->pfunction);
433 * rsi_sdio_write_register() - This function writes one byte of information
435 * @adapter: Pointer to the adapter structure.
436 * @function: Function Number.
437 * @addr: Address of the register.
438 * @data: Pointer to the data tha has to be written.
440 * Return: 0 on success, -1 on failure.
442 int rsi_sdio_write_register(struct rsi_hw *adapter,
447 struct rsi_91x_sdiodev *dev =
448 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
451 if (likely(dev->sdio_irq_task != current))
452 sdio_claim_host(dev->pfunction);
455 sdio_f0_writeb(dev->pfunction, *data, addr, &status);
457 sdio_writeb(dev->pfunction, *data, addr, &status);
459 if (likely(dev->sdio_irq_task != current))
460 sdio_release_host(dev->pfunction);
466 * rsi_sdio_ack_intr() - This function acks the interrupt received.
467 * @adapter: Pointer to the adapter structure.
468 * @int_bit: Interrupt bit to write into register.
472 void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit)
475 status = rsi_sdio_write_register(adapter,
477 (SDIO_FUN1_INTR_CLR_REG |
478 RSI_SD_REQUEST_MASTER),
481 rsi_dbg(ERR_ZONE, "%s: unable to send ack\n", __func__);
487 * rsi_sdio_read_register_multiple() - This function read multiple bytes of
488 * information from the SD card.
489 * @adapter: Pointer to the adapter structure.
490 * @addr: Address of the register.
491 * @count: Number of multiple bytes to be read.
492 * @data: Pointer to the read data.
494 * Return: 0 on success, -1 on failure.
496 static int rsi_sdio_read_register_multiple(struct rsi_hw *adapter,
501 struct rsi_91x_sdiodev *dev =
502 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
505 if (likely(dev->sdio_irq_task != current))
506 sdio_claim_host(dev->pfunction);
508 status = sdio_readsb(dev->pfunction, data, addr, count);
510 if (likely(dev->sdio_irq_task != current))
511 sdio_release_host(dev->pfunction);
514 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 read failed\n", __func__);
519 * rsi_sdio_write_register_multiple() - This function writes multiple bytes of
520 * information to the SD card.
521 * @adapter: Pointer to the adapter structure.
522 * @addr: Address of the register.
523 * @data: Pointer to the data that has to be written.
524 * @count: Number of multiple bytes to be written.
526 * Return: 0 on success, -1 on failure.
528 int rsi_sdio_write_register_multiple(struct rsi_hw *adapter,
533 struct rsi_91x_sdiodev *dev =
534 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
537 if (dev->write_fail > 1) {
538 rsi_dbg(ERR_ZONE, "%s: Stopping card writes\n", __func__);
540 } else if (dev->write_fail == 1) {
542 * Assuming it is a CRC failure, we want to allow another
545 rsi_dbg(ERR_ZONE, "%s: Continue card writes\n", __func__);
549 if (likely(dev->sdio_irq_task != current))
550 sdio_claim_host(dev->pfunction);
552 status = sdio_writesb(dev->pfunction, addr, data, count);
554 if (likely(dev->sdio_irq_task != current))
555 sdio_release_host(dev->pfunction);
558 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 write failed %d\n",
562 memcpy(dev->prev_desc, data, FRAME_DESC_SZ);
567 static int rsi_sdio_load_data_master_write(struct rsi_hw *adapter,
573 u32 num_blocks, offset, i;
574 u16 msb_address, lsb_address;
578 num_blocks = instructions_sz / block_size;
579 msb_address = base_address >> 16;
581 rsi_dbg(INFO_ZONE, "ins_size: %d, num_blocks: %d\n",
582 instructions_sz, num_blocks);
584 temp_buf = kmalloc(block_size, GFP_KERNEL);
588 /* Loading DM ms word in the sdio slave */
589 status = rsi_sdio_master_access_msword(adapter, msb_address);
591 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
595 for (offset = 0, i = 0; i < num_blocks; i++, offset += block_size) {
596 memcpy(temp_buf, ta_firmware + offset, block_size);
597 lsb_address = (u16)base_address;
598 status = rsi_sdio_write_register_multiple
600 lsb_address | RSI_SD_REQUEST_MASTER,
601 temp_buf, block_size);
603 rsi_dbg(ERR_ZONE, "%s: failed to write\n", __func__);
606 rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i);
607 base_address += block_size;
609 if ((base_address >> 16) != msb_address) {
612 /* Loading DM ms word in the sdio slave */
613 status = rsi_sdio_master_access_msword(adapter,
617 "%s: Unable to set ms word reg\n",
624 if (instructions_sz % block_size) {
625 memset(temp_buf, 0, block_size);
626 memcpy(temp_buf, ta_firmware + offset,
627 instructions_sz % block_size);
628 lsb_address = (u16)base_address;
629 status = rsi_sdio_write_register_multiple
631 lsb_address | RSI_SD_REQUEST_MASTER,
633 instructions_sz % block_size);
637 "Written Last Block in Address 0x%x Successfully\n",
638 offset | RSI_SD_REQUEST_MASTER);
647 #define FLASH_SIZE_ADDR 0x04000016
648 static int rsi_sdio_master_reg_read(struct rsi_hw *adapter, u32 addr,
649 u32 *read_buf, u16 size)
651 u32 addr_on_bus, *data;
655 data = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
659 ms_addr = (addr >> 16);
660 status = rsi_sdio_master_access_msword(adapter, ms_addr);
663 "%s: Unable to set ms word to common reg\n",
669 addr_on_bus = (addr & 0xFF000000);
670 if ((addr_on_bus == (FLASH_SIZE_ADDR & 0xFF000000)) ||
671 (addr_on_bus == 0x0))
672 addr_on_bus = (addr & ~(0x3));
676 /* Bring TA out of reset */
677 status = rsi_sdio_read_register_multiple
679 (addr_on_bus | RSI_SD_REQUEST_MASTER),
682 rsi_dbg(ERR_ZONE, "%s: AHB register read failed\n", __func__);
686 if ((addr & 0x3) == 0)
689 *read_buf = (*data >> 16);
690 *read_buf = (*read_buf & 0xFFFF);
691 } else if (size == 1) {
692 if ((addr & 0x3) == 0)
694 else if ((addr & 0x3) == 1)
695 *read_buf = (*data >> 8);
696 else if ((addr & 0x3) == 2)
697 *read_buf = (*data >> 16);
699 *read_buf = (*data >> 24);
700 *read_buf = (*read_buf & 0xFF);
710 static int rsi_sdio_master_reg_write(struct rsi_hw *adapter,
712 unsigned long data, u16 size)
714 unsigned long *data_aligned;
717 data_aligned = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
722 *data_aligned = ((data << 16) | (data & 0xFFFF));
723 } else if (size == 1) {
724 u32 temp_data = data & 0xFF;
726 *data_aligned = ((temp_data << 24) | (temp_data << 16) |
727 (temp_data << 8) | temp_data);
729 *data_aligned = data;
733 status = rsi_sdio_master_access_msword(adapter, (addr >> 16));
736 "%s: Unable to set ms word to common reg\n",
741 addr = addr & 0xFFFF;
743 /* Bring TA out of reset */
744 status = rsi_sdio_write_register_multiple
746 (addr | RSI_SD_REQUEST_MASTER),
747 (u8 *)data_aligned, size);
750 "%s: Unable to do AHB reg write\n", __func__);
757 * rsi_sdio_host_intf_write_pkt() - This function writes the packet to device.
758 * @adapter: Pointer to the adapter structure.
759 * @pkt: Pointer to the data to be written on to the device.
760 * @len: length of the data to be written on to the device.
762 * Return: 0 on success, -1 on failure.
764 static int rsi_sdio_host_intf_write_pkt(struct rsi_hw *adapter,
768 struct rsi_91x_sdiodev *dev =
769 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
770 u32 block_size = dev->tx_blk_size;
771 u32 num_blocks, address, length;
775 queueno = ((pkt[1] >> 4) & 0xf);
776 if (queueno == RSI_BT_MGMT_Q || queueno == RSI_BT_DATA_Q)
779 num_blocks = len / block_size;
781 if (len % block_size)
784 address = (num_blocks * block_size | (queueno << 12));
785 length = num_blocks * block_size;
787 status = rsi_sdio_write_register_multiple(adapter,
792 rsi_dbg(ERR_ZONE, "%s: Unable to write onto the card: %d\n",
794 rsi_dbg(DATA_TX_ZONE, "%s: Successfully written onto card\n", __func__);
799 * rsi_sdio_host_intf_read_pkt() - This function reads the packet
801 * @adapter: Pointer to the adapter data structure.
802 * @pkt: Pointer to the packet data to be read from the the device.
803 * @length: Length of the data to be read from the device.
805 * Return: 0 on success, -1 on failure.
807 int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter,
811 int status = -EINVAL;
814 rsi_dbg(ERR_ZONE, "%s: Pkt size is zero\n", __func__);
818 status = rsi_sdio_read_register_multiple(adapter,
821 length); /*num of bytes*/
824 rsi_dbg(ERR_ZONE, "%s: Failed to read frame: %d\n", __func__,
830 * rsi_init_sdio_interface() - This function does init specific to SDIO.
832 * @adapter: Pointer to the adapter data structure.
833 * @pfunction: Pointer to the sdio_func structure.
835 * Return: 0 on success, -1 on failure.
837 static int rsi_init_sdio_interface(struct rsi_hw *adapter,
838 struct sdio_func *pfunction)
840 struct rsi_91x_sdiodev *rsi_91x_dev;
843 rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL);
847 adapter->rsi_dev = rsi_91x_dev;
849 sdio_claim_host(pfunction);
851 pfunction->enable_timeout = 100;
852 status = sdio_enable_func(pfunction);
854 rsi_dbg(ERR_ZONE, "%s: Failed to enable interface\n", __func__);
855 sdio_release_host(pfunction);
859 rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__);
861 rsi_91x_dev->pfunction = pfunction;
862 adapter->device = &pfunction->dev;
864 sdio_set_drvdata(pfunction, adapter);
866 status = rsi_setupcard(adapter);
868 rsi_dbg(ERR_ZONE, "%s: Failed to setup card\n", __func__);
872 rsi_dbg(INIT_ZONE, "%s: Setup card successfully\n", __func__);
874 status = rsi_init_sdio_slave_regs(adapter);
876 rsi_dbg(ERR_ZONE, "%s: Failed to init slave regs\n", __func__);
879 sdio_release_host(pfunction);
881 adapter->determine_event_timeout = rsi_sdio_determine_event_timeout;
882 adapter->check_hw_queue_status = rsi_sdio_check_buffer_status;
884 #ifdef CONFIG_RSI_DEBUGFS
885 adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES;
889 sdio_disable_func(pfunction);
890 sdio_release_host(pfunction);
894 static int rsi_sdio_reinit_device(struct rsi_hw *adapter)
896 struct rsi_91x_sdiodev *sdev = adapter->rsi_dev;
897 struct sdio_func *pfunction = sdev->pfunction;
900 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
901 skb_queue_purge(&adapter->priv->tx_queue[ii]);
903 /* Initialize device again */
904 sdio_claim_host(pfunction);
906 sdio_release_irq(pfunction);
907 rsi_reset_card(pfunction);
909 sdio_enable_func(pfunction);
910 rsi_setupcard(adapter);
911 rsi_init_sdio_slave_regs(adapter);
912 sdio_claim_irq(pfunction, rsi_handle_interrupt);
913 rsi_hal_device_init(adapter);
915 sdio_release_host(pfunction);
920 static int rsi_sdio_ta_reset(struct rsi_hw *adapter)
926 data = kzalloc(RSI_9116_REG_SIZE, GFP_KERNEL);
930 status = rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR);
933 "Unable to set ms word to common reg\n");
937 rsi_dbg(INIT_ZONE, "%s: Bring TA out of reset\n", __func__);
938 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
939 addr = TA_HOLD_THREAD_REG | RSI_SD_REQUEST_MASTER;
940 status = rsi_sdio_write_register_multiple(adapter, addr,
944 rsi_dbg(ERR_ZONE, "Unable to hold TA threads\n");
948 put_unaligned_le32(TA_SOFT_RST_CLR, data);
949 addr = TA_SOFT_RESET_REG | RSI_SD_REQUEST_MASTER;
950 status = rsi_sdio_write_register_multiple(adapter, addr,
954 rsi_dbg(ERR_ZONE, "Unable to get TA out of reset\n");
958 put_unaligned_le32(TA_PC_ZERO, data);
959 addr = TA_TH0_PC_REG | RSI_SD_REQUEST_MASTER;
960 status = rsi_sdio_write_register_multiple(adapter, addr,
964 rsi_dbg(ERR_ZONE, "Unable to Reset TA PC value\n");
969 put_unaligned_le32(TA_RELEASE_THREAD_VALUE, data);
970 addr = TA_RELEASE_THREAD_REG | RSI_SD_REQUEST_MASTER;
971 status = rsi_sdio_write_register_multiple(adapter, addr,
975 rsi_dbg(ERR_ZONE, "Unable to release TA threads\n");
979 status = rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR);
981 rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n");
984 rsi_dbg(INIT_ZONE, "***** TA Reset done *****\n");
991 static struct rsi_host_intf_ops sdio_host_intf_ops = {
992 .write_pkt = rsi_sdio_host_intf_write_pkt,
993 .read_pkt = rsi_sdio_host_intf_read_pkt,
994 .master_access_msword = rsi_sdio_master_access_msword,
995 .read_reg_multiple = rsi_sdio_read_register_multiple,
996 .write_reg_multiple = rsi_sdio_write_register_multiple,
997 .master_reg_read = rsi_sdio_master_reg_read,
998 .master_reg_write = rsi_sdio_master_reg_write,
999 .load_data_master_write = rsi_sdio_load_data_master_write,
1000 .reinit_device = rsi_sdio_reinit_device,
1001 .ta_reset = rsi_sdio_ta_reset,
1005 * rsi_probe() - This function is called by kernel when the driver provided
1006 * Vendor and device IDs are matched. All the initialization
1007 * work is done here.
1008 * @pfunction: Pointer to the sdio_func structure.
1009 * @id: Pointer to sdio_device_id structure.
1011 * Return: 0 on success, 1 on failure.
1013 static int rsi_probe(struct sdio_func *pfunction,
1014 const struct sdio_device_id *id)
1016 struct rsi_hw *adapter;
1017 struct rsi_91x_sdiodev *sdev;
1018 int status = -EINVAL;
1020 rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__);
1022 adapter = rsi_91x_init(dev_oper_mode);
1024 rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n",
1028 adapter->rsi_host_intf = RSI_HOST_INTF_SDIO;
1029 adapter->host_intf_ops = &sdio_host_intf_ops;
1031 if (rsi_init_sdio_interface(adapter, pfunction)) {
1032 rsi_dbg(ERR_ZONE, "%s: Failed to init sdio interface\n",
1035 goto fail_free_adapter;
1038 if (pfunction->device == SDIO_DEVICE_ID_RSI_9113) {
1039 rsi_dbg(ERR_ZONE, "%s: 9113 module detected\n", __func__);
1040 adapter->device_model = RSI_DEV_9113;
1041 } else if (pfunction->device == SDIO_DEVICE_ID_RSI_9116) {
1042 rsi_dbg(ERR_ZONE, "%s: 9116 module detected\n", __func__);
1043 adapter->device_model = RSI_DEV_9116;
1046 "%s: Unsupported RSI device id 0x%x\n", __func__,
1048 goto fail_free_adapter;
1051 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1052 rsi_init_event(&sdev->rx_thread.event);
1053 status = rsi_create_kthread(adapter->priv, &sdev->rx_thread,
1054 rsi_sdio_rx_thread, "SDIO-RX-Thread");
1056 rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__);
1057 goto fail_kill_thread;
1060 sdio_claim_host(pfunction);
1061 if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) {
1062 rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__);
1063 sdio_release_host(pfunction);
1065 goto fail_claim_irq;
1067 sdio_release_host(pfunction);
1068 rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__);
1070 if (rsi_hal_device_init(adapter)) {
1071 rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__);
1075 rsi_dbg(INFO_ZONE, "===> RSI Device Init Done <===\n");
1077 if (rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR)) {
1078 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
1083 adapter->priv->hibernate_resume = false;
1084 adapter->priv->reinit_hw = false;
1088 sdio_claim_host(pfunction);
1089 sdio_release_irq(pfunction);
1090 sdio_release_host(pfunction);
1092 rsi_kill_thread(&sdev->rx_thread);
1094 sdio_claim_host(pfunction);
1095 sdio_disable_func(pfunction);
1096 sdio_release_host(pfunction);
1098 rsi_91x_deinit(adapter);
1099 rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__);
1103 static void ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data,
1106 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG1,
1107 ((addr << 6) | ((data >> 16) & 0xffff)), 2);
1108 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG0,
1109 (data & 0xffff), 2);
1110 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG0,
1111 RSI_GSPI_CTRL_REG0_VALUE, 2);
1112 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG1,
1113 ((len_in_bits - 1) | RSI_GSPI_TRIG), 2);
1117 /*This function resets and re-initializes the chip.*/
1118 static void rsi_reset_chip(struct rsi_hw *adapter)
1121 u8 sdio_interrupt_status = 0;
1125 data = kzalloc(sizeof(u32), GFP_KERNEL);
1129 rsi_dbg(INFO_ZONE, "Writing disable to wakeup register\n");
1130 ret = rsi_sdio_write_register(adapter, 0, SDIO_WAKEUP_REG, &request);
1133 "%s: Failed to write SDIO wakeup register\n", __func__);
1137 ret = rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1138 &sdio_interrupt_status);
1140 rsi_dbg(ERR_ZONE, "%s: Failed to Read Intr Status Register\n",
1144 rsi_dbg(INFO_ZONE, "%s: Intr Status Register value = %d\n",
1145 __func__, sdio_interrupt_status);
1147 /* Put Thread-Arch processor on hold */
1148 if (rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR)) {
1150 "%s: Unable to set ms word to common reg\n",
1155 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
1156 if (rsi_sdio_write_register_multiple(adapter, TA_HOLD_THREAD_REG |
1157 RSI_SD_REQUEST_MASTER,
1160 "%s: Unable to hold Thread-Arch processor threads\n",
1165 /* This msleep will ensure Thread-Arch processor to go to hold
1166 * and any pending dma transfers to rf spi in device to finish.
1169 if (adapter->device_model != RSI_DEV_9116) {
1170 ulp_read_write(adapter, RSI_ULP_RESET_REG, RSI_ULP_WRITE_0, 32);
1171 ulp_read_write(adapter,
1172 RSI_WATCH_DOG_TIMER_1, RSI_ULP_WRITE_2, 32);
1173 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2, RSI_ULP_WRITE_0,
1175 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1,
1176 RSI_ULP_WRITE_50, 32);
1177 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2,
1178 RSI_ULP_WRITE_0, 32);
1179 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE,
1180 RSI_ULP_TIMER_ENABLE, 32);
1182 if ((rsi_sdio_master_reg_write(adapter,
1183 NWP_WWD_INTERRUPT_TIMER,
1184 NWP_WWD_INT_TIMER_CLKS,
1185 RSI_9116_REG_SIZE)) < 0) {
1186 rsi_dbg(ERR_ZONE, "Failed to write to intr timer\n");
1188 if ((rsi_sdio_master_reg_write(adapter,
1189 NWP_WWD_SYSTEM_RESET_TIMER,
1190 NWP_WWD_SYS_RESET_TIMER_CLKS,
1191 RSI_9116_REG_SIZE)) < 0) {
1193 "Failed to write to system reset timer\n");
1195 if ((rsi_sdio_master_reg_write(adapter,
1196 NWP_WWD_MODE_AND_RSTART,
1197 NWP_WWD_TIMER_DISABLE,
1198 RSI_9116_REG_SIZE)) < 0) {
1200 "Failed to write to mode and restart\n");
1202 rsi_dbg(ERR_ZONE, "***** Watch Dog Reset Successful *****\n");
1204 /* This msleep will be sufficient for the ulp
1205 * read write operations to complete for chip reset.
1214 * rsi_disconnect() - This function performs the reverse of the probe function.
1215 * @pfunction: Pointer to the sdio_func structure.
1219 static void rsi_disconnect(struct sdio_func *pfunction)
1221 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1222 struct rsi_91x_sdiodev *dev;
1227 dev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1229 rsi_kill_thread(&dev->rx_thread);
1230 sdio_claim_host(pfunction);
1231 sdio_release_irq(pfunction);
1232 sdio_release_host(pfunction);
1235 rsi_mac80211_detach(adapter);
1238 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1239 adapter->priv->bt_adapter) {
1240 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1241 adapter->priv->bt_adapter = NULL;
1245 rsi_reset_chip(adapter);
1247 /* Resetting to take care of the case, where-in driver is re-loaded */
1248 sdio_claim_host(pfunction);
1249 rsi_reset_card(pfunction);
1250 sdio_disable_func(pfunction);
1251 sdio_release_host(pfunction);
1252 dev->write_fail = 2;
1253 rsi_91x_deinit(adapter);
1254 rsi_dbg(ERR_ZONE, "##### RSI SDIO device disconnected #####\n");
1259 static int rsi_set_sdio_pm_caps(struct rsi_hw *adapter)
1261 struct rsi_91x_sdiodev *dev =
1262 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1263 struct sdio_func *func = dev->pfunction;
1266 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1268 rsi_dbg(ERR_ZONE, "Set sdio keep pwr flag failed: %d\n", ret);
1273 static int rsi_sdio_disable_interrupts(struct sdio_func *pfunc)
1275 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1276 u8 isr_status = 0, data = 0;
1280 rsi_dbg(INFO_ZONE, "Waiting for interrupts to be cleared..");
1283 rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1285 rsi_dbg(INFO_ZONE, ".");
1286 } while ((isr_status) && (jiffies_to_msecs(jiffies - t1) < 20));
1287 rsi_dbg(INFO_ZONE, "Interrupts cleared\n");
1289 sdio_claim_host(pfunc);
1290 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1293 "%s: Failed to read int enable register\n",
1298 data &= RSI_INT_ENABLE_MASK;
1299 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1302 "%s: Failed to write to int enable register\n",
1306 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1309 "%s: Failed to read int enable register\n",
1313 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1316 sdio_release_host(pfunc);
1320 static int rsi_sdio_enable_interrupts(struct sdio_func *pfunc)
1324 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1325 struct rsi_common *common = adapter->priv;
1327 sdio_claim_host(pfunc);
1328 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1331 "%s: Failed to read int enable register\n", __func__);
1335 data |= ~RSI_INT_ENABLE_MASK & 0xff;
1337 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1340 "%s: Failed to write to int enable register\n",
1345 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1346 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1348 "##### Device can not wake up through WLAN\n");
1350 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1353 "%s: Failed to read int enable register\n", __func__);
1356 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1359 sdio_release_host(pfunc);
1363 static int rsi_suspend(struct device *dev)
1366 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1367 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1368 struct rsi_common *common;
1371 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1374 common = adapter->priv;
1375 rsi_sdio_disable_interrupts(pfunction);
1377 ret = rsi_set_sdio_pm_caps(adapter);
1380 "Setting power management caps failed\n");
1381 common->fsm_state = FSM_CARD_NOT_READY;
1386 static int rsi_resume(struct device *dev)
1388 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1389 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1390 struct rsi_common *common = adapter->priv;
1392 common->fsm_state = FSM_MAC_INIT_DONE;
1393 rsi_sdio_enable_interrupts(pfunction);
1398 static int rsi_freeze(struct device *dev)
1401 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1402 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1403 struct rsi_common *common;
1404 struct rsi_91x_sdiodev *sdev;
1406 rsi_dbg(INFO_ZONE, "SDIO Bus freeze ===>\n");
1409 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1412 common = adapter->priv;
1413 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1415 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1416 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1418 "##### Device can not wake up through WLAN\n");
1420 if (IS_ENABLED(CONFIG_RSI_COEX) && common->coex_mode > 1 &&
1421 common->bt_adapter) {
1422 rsi_bt_ops.detach(common->bt_adapter);
1423 common->bt_adapter = NULL;
1426 ret = rsi_sdio_disable_interrupts(pfunction);
1428 if (sdev->write_fail)
1429 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1431 ret = rsi_set_sdio_pm_caps(adapter);
1433 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1435 rsi_dbg(INFO_ZONE, "***** RSI module freezed *****\n");
1440 static int rsi_thaw(struct device *dev)
1442 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1443 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1444 struct rsi_common *common = adapter->priv;
1446 rsi_dbg(ERR_ZONE, "SDIO Bus thaw =====>\n");
1448 common->hibernate_resume = true;
1449 common->fsm_state = FSM_CARD_NOT_READY;
1450 common->iface_down = true;
1452 rsi_sdio_enable_interrupts(pfunction);
1454 rsi_dbg(INFO_ZONE, "***** RSI module thaw done *****\n");
1459 static void rsi_shutdown(struct device *dev)
1461 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1462 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1463 struct rsi_91x_sdiodev *sdev =
1464 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1465 struct ieee80211_hw *hw = adapter->hw;
1467 rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n");
1470 struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config;
1472 if (rsi_config_wowlan(adapter, wowlan))
1473 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1476 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1477 adapter->priv->bt_adapter) {
1478 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1479 adapter->priv->bt_adapter = NULL;
1482 rsi_sdio_disable_interrupts(sdev->pfunction);
1484 if (sdev->write_fail)
1485 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1487 if (rsi_set_sdio_pm_caps(adapter))
1488 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1490 rsi_dbg(INFO_ZONE, "***** RSI module shut down *****\n");
1493 static int rsi_restore(struct device *dev)
1495 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1496 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1497 struct rsi_common *common = adapter->priv;
1499 rsi_dbg(INFO_ZONE, "SDIO Bus restore ======>\n");
1500 common->hibernate_resume = true;
1501 common->fsm_state = FSM_FW_NOT_LOADED;
1502 common->iface_down = true;
1504 adapter->sc_nvifs = 0;
1505 adapter->ps_state = PS_NONE;
1507 common->wow_flags = 0;
1508 common->iface_down = false;
1510 rsi_dbg(INFO_ZONE, "RSI module restored\n");
1514 static const struct dev_pm_ops rsi_pm_ops = {
1515 .suspend = rsi_suspend,
1516 .resume_noirq = rsi_resume,
1517 .freeze = rsi_freeze,
1519 .restore = rsi_restore,
1523 static const struct sdio_device_id rsi_dev_table[] = {
1524 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9113) },
1525 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9116) },
1529 static struct sdio_driver rsi_driver = {
1530 .name = "RSI-SDIO WLAN",
1532 .remove = rsi_disconnect,
1533 .id_table = rsi_dev_table,
1537 .shutdown = rsi_shutdown,
1543 * rsi_module_init() - This function registers the sdio module.
1546 * Return: 0 on success.
1548 static int rsi_module_init(void)
1552 ret = sdio_register_driver(&rsi_driver);
1553 rsi_dbg(INIT_ZONE, "%s: Registering driver\n", __func__);
1558 * rsi_module_exit() - This function unregisters the sdio module.
1563 static void rsi_module_exit(void)
1565 sdio_unregister_driver(&rsi_driver);
1566 rsi_dbg(INFO_ZONE, "%s: Unregistering driver\n", __func__);
1569 module_init(rsi_module_init);
1570 module_exit(rsi_module_exit);
1572 MODULE_AUTHOR("Redpine Signals Inc");
1573 MODULE_DESCRIPTION("Common SDIO layer for RSI drivers");
1574 MODULE_DEVICE_TABLE(sdio, rsi_dev_table);
1575 MODULE_FIRMWARE(FIRMWARE_RSI9113);
1576 MODULE_VERSION("0.1");
1577 MODULE_LICENSE("Dual BSD/GPL");