kernel_optimize_test/drivers/bluetooth/btmrvl_sdio.c
Andreas Fenkart 69676b1c2a Bluetooth: btmrvl: report error if verify_fw_download times out
FW does the synchronization of the different modules during init.
It will report different modules, that it is ready at different times.
The fw download 'winner' will be reported fw ready first. Without this
patch, btmrvl was already continuing before the FW told it too. Probably
on behalf of the 'winner' which then never sees FW ready and times out.

Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-04-23 20:55:55 -03:00

1197 lines
26 KiB
C

/**
* Marvell BT-over-SDIO driver: SDIO interface related functions.
*
* Copyright (C) 2009, Marvell International Ltd.
*
* This software file (the "File") is distributed by Marvell International
* Ltd. under the terms of the GNU General Public License Version 2, June 1991
* (the "License"). You may use, redistribute and/or modify this File in
* accordance with the terms and conditions of the License, a copy of which
* is available by writing to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
*
* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
* this warranty disclaimer.
**/
#include <linux/firmware.h>
#include <linux/slab.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
#include <linux/module.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btmrvl_drv.h"
#include "btmrvl_sdio.h"
#define VERSION "1.0"
/* The btmrvl_sdio_remove() callback function is called
* when user removes this module from kernel space or ejects
* the card from the slot. The driver handles these 2 cases
* differently.
* If the user is removing the module, a MODULE_SHUTDOWN_REQ
* command is sent to firmware and interrupt will be disabled.
* If the card is removed, there is no need to send command
* or disable interrupt.
*
* The variable 'user_rmmod' is used to distinguish these two
* scenarios. This flag is initialized as FALSE in case the card
* is removed, and will be set to TRUE for module removal when
* module_exit function is called.
*/
static u8 user_rmmod;
static u8 sdio_ireg;
static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
.cfg = 0x03,
.host_int_mask = 0x04,
.host_intstatus = 0x05,
.card_status = 0x20,
.sq_read_base_addr_a0 = 0x10,
.sq_read_base_addr_a1 = 0x11,
.card_fw_status0 = 0x40,
.card_fw_status1 = 0x41,
.card_rx_len = 0x42,
.card_rx_unit = 0x43,
.io_port_0 = 0x00,
.io_port_1 = 0x01,
.io_port_2 = 0x02,
};
static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
.cfg = 0x00,
.host_int_mask = 0x02,
.host_intstatus = 0x03,
.card_status = 0x30,
.sq_read_base_addr_a0 = 0x40,
.sq_read_base_addr_a1 = 0x41,
.card_revision = 0x5c,
.card_fw_status0 = 0x60,
.card_fw_status1 = 0x61,
.card_rx_len = 0x62,
.card_rx_unit = 0x63,
.io_port_0 = 0x78,
.io_port_1 = 0x79,
.io_port_2 = 0x7a,
};
static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
.helper = "mrvl/sd8688_helper.bin",
.firmware = "mrvl/sd8688.bin",
.reg = &btmrvl_reg_8688,
.sd_blksz_fw_dl = 64,
};
static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
.helper = NULL,
.firmware = "mrvl/sd8787_uapsta.bin",
.reg = &btmrvl_reg_87xx,
.sd_blksz_fw_dl = 256,
};
static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
.helper = NULL,
.firmware = "mrvl/sd8797_uapsta.bin",
.reg = &btmrvl_reg_87xx,
.sd_blksz_fw_dl = 256,
};
static const struct sdio_device_id btmrvl_sdio_ids[] = {
/* Marvell SD8688 Bluetooth device */
{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
.driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
/* Marvell SD8787 Bluetooth device */
{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
.driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
/* Marvell SD8787 Bluetooth AMP device */
{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
.driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
/* Marvell SD8797 Bluetooth device */
{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
.driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
{
u8 reg;
int ret;
reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
if (!ret)
card->rx_unit = reg;
return ret;
}
static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
{
u8 fws0, fws1;
int ret;
*dat = 0;
fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
if (ret)
return -EIO;
fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
if (ret)
return -EIO;
*dat = (((u16) fws1) << 8) | fws0;
return 0;
}
static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
{
u8 reg;
int ret;
reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
if (!ret)
*dat = (u16) reg << card->rx_unit;
return ret;
}
static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
u8 mask)
{
int ret;
sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
if (ret) {
BT_ERR("Unable to enable the host interrupt!");
ret = -EIO;
}
return ret;
}
static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
u8 mask)
{
u8 host_int_mask;
int ret;
host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
if (ret)
return -EIO;
host_int_mask &= ~mask;
sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
if (ret < 0) {
BT_ERR("Unable to disable the host interrupt!");
return -EIO;
}
return 0;
}
static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
{
unsigned int tries;
u8 status;
int ret;
for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
status = sdio_readb(card->func, card->reg->card_status, &ret);
if (ret)
goto failed;
if ((status & bits) == bits)
return ret;
udelay(1);
}
ret = -ETIMEDOUT;
failed:
BT_ERR("FAILED! ret=%d", ret);
return ret;
}
static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
int pollnum)
{
u16 firmwarestat;
int tries, ret;
/* Wait for firmware to become ready */
for (tries = 0; tries < pollnum; tries++) {
sdio_claim_host(card->func);
ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
sdio_release_host(card->func);
if (ret < 0)
continue;
if (firmwarestat == FIRMWARE_READY)
return 0;
msleep(10);
}
return -ETIMEDOUT;
}
static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
{
const struct firmware *fw_helper = NULL;
const u8 *helper = NULL;
int ret;
void *tmphlprbuf = NULL;
int tmphlprbufsz, hlprblknow, helperlen;
u8 *helperbuf;
u32 tx_len;
ret = request_firmware(&fw_helper, card->helper,
&card->func->dev);
if ((ret < 0) || !fw_helper) {
BT_ERR("request_firmware(helper) failed, error code = %d",
ret);
ret = -ENOENT;
goto done;
}
helper = fw_helper->data;
helperlen = fw_helper->size;
BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
helperlen, SDIO_BLOCK_SIZE);
tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
if (!tmphlprbuf) {
BT_ERR("Unable to allocate buffer for helper."
" Terminating download");
ret = -ENOMEM;
goto done;
}
helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
/* Perform helper data transfer */
tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
- SDIO_HEADER_LEN;
hlprblknow = 0;
do {
ret = btmrvl_sdio_poll_card_status(card,
CARD_IO_READY | DN_LD_CARD_RDY);
if (ret < 0) {
BT_ERR("Helper download poll status timeout @ %d",
hlprblknow);
goto done;
}
/* Check if there is more data? */
if (hlprblknow >= helperlen)
break;
if (helperlen - hlprblknow < tx_len)
tx_len = helperlen - hlprblknow;
/* Little-endian */
helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
helperbuf[3] = ((tx_len & 0xff000000) >> 24);
memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
tx_len);
/* Now send the data */
ret = sdio_writesb(card->func, card->ioport, helperbuf,
FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
if (ret < 0) {
BT_ERR("IO error during helper download @ %d",
hlprblknow);
goto done;
}
hlprblknow += tx_len;
} while (true);
BT_DBG("Transferring helper image EOF block");
memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
ret = sdio_writesb(card->func, card->ioport, helperbuf,
SDIO_BLOCK_SIZE);
if (ret < 0) {
BT_ERR("IO error in writing helper image EOF block");
goto done;
}
ret = 0;
done:
kfree(tmphlprbuf);
release_firmware(fw_helper);
return ret;
}
static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
{
const struct firmware *fw_firmware = NULL;
const u8 *firmware = NULL;
int firmwarelen, tmpfwbufsz, ret;
unsigned int tries, offset;
u8 base0, base1;
void *tmpfwbuf = NULL;
u8 *fwbuf;
u16 len, blksz_dl = card->sd_blksz_fw_dl;
int txlen = 0, tx_blocks = 0, count = 0;
ret = request_firmware(&fw_firmware, card->firmware,
&card->func->dev);
if ((ret < 0) || !fw_firmware) {
BT_ERR("request_firmware(firmware) failed, error code = %d",
ret);
ret = -ENOENT;
goto done;
}
firmware = fw_firmware->data;
firmwarelen = fw_firmware->size;
BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
if (!tmpfwbuf) {
BT_ERR("Unable to allocate buffer for firmware."
" Terminating download");
ret = -ENOMEM;
goto done;
}
/* Ensure aligned firmware buffer */
fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
/* Perform firmware data transfer */
offset = 0;
do {
ret = btmrvl_sdio_poll_card_status(card,
CARD_IO_READY | DN_LD_CARD_RDY);
if (ret < 0) {
BT_ERR("FW download with helper poll status"
" timeout @ %d", offset);
goto done;
}
/* Check if there is more data ? */
if (offset >= firmwarelen)
break;
for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
base0 = sdio_readb(card->func,
card->reg->sq_read_base_addr_a0, &ret);
if (ret) {
BT_ERR("BASE0 register read failed:"
" base0 = 0x%04X(%d)."
" Terminating download",
base0, base0);
ret = -EIO;
goto done;
}
base1 = sdio_readb(card->func,
card->reg->sq_read_base_addr_a1, &ret);
if (ret) {
BT_ERR("BASE1 register read failed:"
" base1 = 0x%04X(%d)."
" Terminating download",
base1, base1);
ret = -EIO;
goto done;
}
len = (((u16) base1) << 8) | base0;
if (len)
break;
udelay(10);
}
if (!len)
break;
else if (len > BTM_UPLD_SIZE) {
BT_ERR("FW download failure @%d, invalid length %d",
offset, len);
ret = -EINVAL;
goto done;
}
txlen = len;
if (len & BIT(0)) {
count++;
if (count > MAX_WRITE_IOMEM_RETRY) {
BT_ERR("FW download failure @%d, "
"over max retry count", offset);
ret = -EIO;
goto done;
}
BT_ERR("FW CRC error indicated by the helper: "
"len = 0x%04X, txlen = %d", len, txlen);
len &= ~BIT(0);
/* Set txlen to 0 so as to resend from same offset */
txlen = 0;
} else {
count = 0;
/* Last block ? */
if (firmwarelen - offset < txlen)
txlen = firmwarelen - offset;
tx_blocks = (txlen + blksz_dl - 1) / blksz_dl;
memcpy(fwbuf, &firmware[offset], txlen);
}
ret = sdio_writesb(card->func, card->ioport, fwbuf,
tx_blocks * blksz_dl);
if (ret < 0) {
BT_ERR("FW download, writesb(%d) failed @%d",
count, offset);
sdio_writeb(card->func, HOST_CMD53_FIN,
card->reg->cfg, &ret);
if (ret)
BT_ERR("writeb failed (CFG)");
}
offset += txlen;
} while (true);
BT_DBG("FW download over, size %d bytes", offset);
ret = 0;
done:
kfree(tmpfwbuf);
release_firmware(fw_firmware);
return ret;
}
static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
{
u16 buf_len = 0;
int ret, num_blocks, blksz;
struct sk_buff *skb = NULL;
u32 type;
u8 *payload = NULL;
struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
ret = -EINVAL;
goto exit;
}
/* Read the length of data to be transferred */
ret = btmrvl_sdio_read_rx_len(card, &buf_len);
if (ret < 0) {
BT_ERR("read rx_len failed");
ret = -EIO;
goto exit;
}
blksz = SDIO_BLOCK_SIZE;
num_blocks = DIV_ROUND_UP(buf_len, blksz);
if (buf_len <= SDIO_HEADER_LEN
|| (num_blocks * blksz) > ALLOC_BUF_SIZE) {
BT_ERR("invalid packet length: %d", buf_len);
ret = -EINVAL;
goto exit;
}
/* Allocate buffer */
skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
if (skb == NULL) {
BT_ERR("No free skb");
goto exit;
}
if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
skb_put(skb, (unsigned long) skb->data &
(BTSDIO_DMA_ALIGN - 1));
skb_pull(skb, (unsigned long) skb->data &
(BTSDIO_DMA_ALIGN - 1));
}
payload = skb->data;
ret = sdio_readsb(card->func, payload, card->ioport,
num_blocks * blksz);
if (ret < 0) {
BT_ERR("readsb failed: %d", ret);
ret = -EIO;
goto exit;
}
/* This is SDIO specific header length: byte[2][1][0], type: byte[3]
* (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
*/
buf_len = payload[0];
buf_len |= payload[1] << 8;
buf_len |= payload[2] << 16;
if (buf_len > blksz * num_blocks) {
BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
buf_len, blksz * num_blocks);
ret = -EIO;
goto exit;
}
type = payload[3];
switch (type) {
case HCI_ACLDATA_PKT:
case HCI_SCODATA_PKT:
case HCI_EVENT_PKT:
bt_cb(skb)->pkt_type = type;
skb->dev = (void *)hdev;
skb_put(skb, buf_len);
skb_pull(skb, SDIO_HEADER_LEN);
if (type == HCI_EVENT_PKT) {
if (btmrvl_check_evtpkt(priv, skb))
hci_recv_frame(skb);
} else {
hci_recv_frame(skb);
}
hdev->stat.byte_rx += buf_len;
break;
case MRVL_VENDOR_PKT:
bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
skb->dev = (void *)hdev;
skb_put(skb, buf_len);
skb_pull(skb, SDIO_HEADER_LEN);
if (btmrvl_process_event(priv, skb))
hci_recv_frame(skb);
hdev->stat.byte_rx += buf_len;
break;
default:
BT_ERR("Unknown packet type:%d", type);
BT_ERR("hex: %*ph", blksz * num_blocks, payload);
kfree_skb(skb);
skb = NULL;
break;
}
exit:
if (ret) {
hdev->stat.err_rx++;
kfree_skb(skb);
}
return ret;
}
static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
{
ulong flags;
u8 ireg;
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
spin_lock_irqsave(&priv->driver_lock, flags);
ireg = sdio_ireg;
sdio_ireg = 0;
spin_unlock_irqrestore(&priv->driver_lock, flags);
sdio_claim_host(card->func);
if (ireg & DN_LD_HOST_INT_STATUS) {
if (priv->btmrvl_dev.tx_dnld_rdy)
BT_DBG("tx_done already received: "
" int_status=0x%x", ireg);
else
priv->btmrvl_dev.tx_dnld_rdy = true;
}
if (ireg & UP_LD_HOST_INT_STATUS)
btmrvl_sdio_card_to_host(priv);
sdio_release_host(card->func);
return 0;
}
static void btmrvl_sdio_interrupt(struct sdio_func *func)
{
struct btmrvl_private *priv;
struct btmrvl_sdio_card *card;
ulong flags;
u8 ireg = 0;
int ret;
card = sdio_get_drvdata(func);
if (!card || !card->priv) {
BT_ERR("sbi_interrupt(%p) card or priv is "
"NULL, card=%p\n", func, card);
return;
}
priv = card->priv;
ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
if (ret) {
BT_ERR("sdio_readb: read int status register failed");
return;
}
if (ireg != 0) {
/*
* DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
* Clear the interrupt status register and re-enable the
* interrupt.
*/
BT_DBG("ireg = 0x%x", ireg);
sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS |
UP_LD_HOST_INT_STATUS),
card->reg->host_intstatus, &ret);
if (ret) {
BT_ERR("sdio_writeb: clear int status register failed");
return;
}
}
spin_lock_irqsave(&priv->driver_lock, flags);
sdio_ireg |= ireg;
spin_unlock_irqrestore(&priv->driver_lock, flags);
btmrvl_interrupt(priv);
}
static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
{
struct sdio_func *func;
u8 reg;
int ret = 0;
if (!card || !card->func) {
BT_ERR("Error: card or function is NULL!");
ret = -EINVAL;
goto failed;
}
func = card->func;
sdio_claim_host(func);
ret = sdio_enable_func(func);
if (ret) {
BT_ERR("sdio_enable_func() failed: ret=%d", ret);
ret = -EIO;
goto release_host;
}
ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
if (ret) {
BT_ERR("sdio_claim_irq failed: ret=%d", ret);
ret = -EIO;
goto disable_func;
}
ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
if (ret) {
BT_ERR("cannot set SDIO block size");
ret = -EIO;
goto release_irq;
}
reg = sdio_readb(func, card->reg->io_port_0, &ret);
if (ret < 0) {
ret = -EIO;
goto release_irq;
}
card->ioport = reg;
reg = sdio_readb(func, card->reg->io_port_1, &ret);
if (ret < 0) {
ret = -EIO;
goto release_irq;
}
card->ioport |= (reg << 8);
reg = sdio_readb(func, card->reg->io_port_2, &ret);
if (ret < 0) {
ret = -EIO;
goto release_irq;
}
card->ioport |= (reg << 16);
BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
sdio_set_drvdata(func, card);
sdio_release_host(func);
return 0;
release_irq:
sdio_release_irq(func);
disable_func:
sdio_disable_func(func);
release_host:
sdio_release_host(func);
failed:
return ret;
}
static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
{
if (card && card->func) {
sdio_claim_host(card->func);
sdio_release_irq(card->func);
sdio_disable_func(card->func);
sdio_release_host(card->func);
sdio_set_drvdata(card->func, NULL);
}
return 0;
}
static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
{
int ret;
if (!card || !card->func)
return -EINVAL;
sdio_claim_host(card->func);
ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
btmrvl_sdio_get_rx_unit(card);
sdio_release_host(card->func);
return ret;
}
static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
{
int ret;
if (!card || !card->func)
return -EINVAL;
sdio_claim_host(card->func);
ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
sdio_release_host(card->func);
return ret;
}
static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
u8 *payload, u16 nb)
{
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
int ret = 0;
int buf_block_len;
int blksz;
int i = 0;
u8 *buf = NULL;
void *tmpbuf = NULL;
int tmpbufsz;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
return -EINVAL;
}
buf = payload;
if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
if (!tmpbuf)
return -ENOMEM;
buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
memcpy(buf, payload, nb);
}
blksz = SDIO_BLOCK_SIZE;
buf_block_len = (nb + blksz - 1) / blksz;
sdio_claim_host(card->func);
do {
/* Transfer data to card */
ret = sdio_writesb(card->func, card->ioport, buf,
buf_block_len * blksz);
if (ret < 0) {
i++;
BT_ERR("i=%d writesb failed: %d", i, ret);
BT_ERR("hex: %*ph", nb, payload);
ret = -EIO;
if (i > MAX_WRITE_IOMEM_RETRY)
goto exit;
}
} while (ret);
priv->btmrvl_dev.tx_dnld_rdy = false;
exit:
sdio_release_host(card->func);
kfree(tmpbuf);
return ret;
}
static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
{
int ret;
u8 fws0;
int pollnum = MAX_POLL_TRIES;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
return -EINVAL;
}
if (!btmrvl_sdio_verify_fw_download(card, 1)) {
BT_DBG("Firmware already downloaded!");
return 0;
}
sdio_claim_host(card->func);
/* Check if other function driver is downloading the firmware */
fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
if (ret) {
BT_ERR("Failed to read FW downloading status!");
ret = -EIO;
goto done;
}
if (fws0) {
BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
/* Give other function more time to download the firmware */
pollnum *= 10;
} else {
if (card->helper) {
ret = btmrvl_sdio_download_helper(card);
if (ret) {
BT_ERR("Failed to download helper!");
ret = -EIO;
goto done;
}
}
if (btmrvl_sdio_download_fw_w_helper(card)) {
BT_ERR("Failed to download firmware!");
ret = -EIO;
goto done;
}
}
sdio_release_host(card->func);
/*
* winner or not, with this test the FW synchronizes when the
* module can continue its initialization
*/
if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
BT_ERR("FW failed to be active in time!");
return -ETIMEDOUT;
}
return 0;
done:
sdio_release_host(card->func);
return ret;
}
static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
{
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
int ret = 0;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
return -EINVAL;
}
sdio_claim_host(card->func);
sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
sdio_release_host(card->func);
BT_DBG("wake up firmware");
return ret;
}
static int btmrvl_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
int ret = 0;
struct btmrvl_private *priv = NULL;
struct btmrvl_sdio_card *card = NULL;
BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
id->vendor, id->device, id->class, func->num);
card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
if (!card)
return -ENOMEM;
card->func = func;
if (id->driver_data) {
struct btmrvl_sdio_device *data = (void *) id->driver_data;
card->helper = data->helper;
card->firmware = data->firmware;
card->reg = data->reg;
card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
}
if (btmrvl_sdio_register_dev(card) < 0) {
BT_ERR("Failed to register BT device!");
return -ENODEV;
}
/* Disable the interrupts on the card */
btmrvl_sdio_disable_host_int(card);
if (btmrvl_sdio_download_fw(card)) {
BT_ERR("Downloading firmware failed!");
ret = -ENODEV;
goto unreg_dev;
}
btmrvl_sdio_enable_host_int(card);
priv = btmrvl_add_card(card);
if (!priv) {
BT_ERR("Initializing card failed!");
ret = -ENODEV;
goto disable_host_int;
}
card->priv = priv;
/* Initialize the interface specific function pointers */
priv->hw_host_to_card = btmrvl_sdio_host_to_card;
priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
priv->hw_process_int_status = btmrvl_sdio_process_int_status;
if (btmrvl_register_hdev(priv)) {
BT_ERR("Register hdev failed!");
ret = -ENODEV;
goto disable_host_int;
}
priv->btmrvl_dev.psmode = 1;
btmrvl_enable_ps(priv);
priv->btmrvl_dev.gpio_gap = 0xffff;
btmrvl_send_hscfg_cmd(priv);
return 0;
disable_host_int:
btmrvl_sdio_disable_host_int(card);
unreg_dev:
btmrvl_sdio_unregister_dev(card);
return ret;
}
static void btmrvl_sdio_remove(struct sdio_func *func)
{
struct btmrvl_sdio_card *card;
if (func) {
card = sdio_get_drvdata(func);
if (card) {
/* Send SHUTDOWN command & disable interrupt
* if user removes the module.
*/
if (user_rmmod) {
btmrvl_send_module_cfg_cmd(card->priv,
MODULE_SHUTDOWN_REQ);
btmrvl_sdio_disable_host_int(card);
}
BT_DBG("unregester dev");
btmrvl_sdio_unregister_dev(card);
btmrvl_remove_card(card->priv);
}
}
}
static int btmrvl_sdio_suspend(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
struct btmrvl_sdio_card *card;
struct btmrvl_private *priv;
mmc_pm_flag_t pm_flags;
struct hci_dev *hcidev;
if (func) {
pm_flags = sdio_get_host_pm_caps(func);
BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
pm_flags);
if (!(pm_flags & MMC_PM_KEEP_POWER)) {
BT_ERR("%s: cannot remain alive while suspended",
sdio_func_id(func));
return -ENOSYS;
}
card = sdio_get_drvdata(func);
if (!card || !card->priv) {
BT_ERR("card or priv structure is not valid");
return 0;
}
} else {
BT_ERR("sdio_func is not specified");
return 0;
}
priv = card->priv;
if (priv->adapter->hs_state != HS_ACTIVATED) {
if (btmrvl_enable_hs(priv)) {
BT_ERR("HS not actived, suspend failed!");
return -EBUSY;
}
}
hcidev = priv->btmrvl_dev.hcidev;
BT_DBG("%s: SDIO suspend", hcidev->name);
hci_suspend_dev(hcidev);
skb_queue_purge(&priv->adapter->tx_queue);
priv->adapter->is_suspended = true;
/* We will keep the power when hs enabled successfully */
if (priv->adapter->hs_state == HS_ACTIVATED) {
BT_DBG("suspend with MMC_PM_KEEP_POWER");
return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
} else {
BT_DBG("suspend without MMC_PM_KEEP_POWER");
return 0;
}
}
static int btmrvl_sdio_resume(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
struct btmrvl_sdio_card *card;
struct btmrvl_private *priv;
mmc_pm_flag_t pm_flags;
struct hci_dev *hcidev;
if (func) {
pm_flags = sdio_get_host_pm_caps(func);
BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
pm_flags);
card = sdio_get_drvdata(func);
if (!card || !card->priv) {
BT_ERR("card or priv structure is not valid");
return 0;
}
} else {
BT_ERR("sdio_func is not specified");
return 0;
}
priv = card->priv;
if (!priv->adapter->is_suspended) {
BT_DBG("device already resumed");
return 0;
}
priv->adapter->is_suspended = false;
hcidev = priv->btmrvl_dev.hcidev;
BT_DBG("%s: SDIO resume", hcidev->name);
hci_resume_dev(hcidev);
priv->hw_wakeup_firmware(priv);
priv->adapter->hs_state = HS_DEACTIVATED;
BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
return 0;
}
static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
.suspend = btmrvl_sdio_suspend,
.resume = btmrvl_sdio_resume,
};
static struct sdio_driver bt_mrvl_sdio = {
.name = "btmrvl_sdio",
.id_table = btmrvl_sdio_ids,
.probe = btmrvl_sdio_probe,
.remove = btmrvl_sdio_remove,
.drv = {
.owner = THIS_MODULE,
.pm = &btmrvl_sdio_pm_ops,
}
};
static int __init btmrvl_sdio_init_module(void)
{
if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
BT_ERR("SDIO Driver Registration Failed");
return -ENODEV;
}
/* Clear the flag in case user removes the card. */
user_rmmod = 0;
return 0;
}
static void __exit btmrvl_sdio_exit_module(void)
{
/* Set the flag as user is removing this module. */
user_rmmod = 1;
sdio_unregister_driver(&bt_mrvl_sdio);
}
module_init(btmrvl_sdio_init_module);
module_exit(btmrvl_sdio_exit_module);
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL v2");
MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
MODULE_FIRMWARE("mrvl/sd8688.bin");
MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");