![Ben Hutchings](/assets/img/avatar_default.png)
Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
1008 lines
21 KiB
C
1008 lines
21 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/mmc/sdio_ids.h>
|
|
#include <linux/mmc/sdio_func.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 const struct btmrvl_sdio_device btmrvl_sdio_sd6888 = {
|
|
.helper = "sd8688_helper.bin",
|
|
.firmware = "sd8688.bin",
|
|
};
|
|
|
|
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_sd6888 },
|
|
|
|
{ } /* 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_RX_UNIT_REG, &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_FW_STATUS0_REG, &ret);
|
|
|
|
if (!ret)
|
|
fws1 = sdio_readb(card->func, CARD_FW_STATUS1_REG, &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_RX_LEN_REG, &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, HOST_INT_MASK_REG, &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, HOST_INT_MASK_REG, &ret);
|
|
if (ret)
|
|
return -EIO;
|
|
|
|
host_int_mask &= ~mask;
|
|
|
|
sdio_writeb(card->func, host_int_mask, HOST_INT_MASK_REG, &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_STATUS_REG, &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)
|
|
{
|
|
int ret = -ETIMEDOUT;
|
|
u16 firmwarestat;
|
|
unsigned int tries;
|
|
|
|
/* Wait for firmware to become ready */
|
|
for (tries = 0; tries < pollnum; tries++) {
|
|
if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0)
|
|
continue;
|
|
|
|
if (firmwarestat == FIRMWARE_READY) {
|
|
ret = 0;
|
|
break;
|
|
} else {
|
|
msleep(10);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
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 = kmalloc(tmphlprbufsz, GFP_KERNEL);
|
|
if (!tmphlprbuf) {
|
|
BT_ERR("Unable to allocate buffer for helper."
|
|
" Terminating download");
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
memset(tmphlprbuf, 0, tmphlprbufsz);
|
|
|
|
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);
|
|
if (fw_helper)
|
|
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;
|
|
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 = kmalloc(tmpfwbufsz, GFP_KERNEL);
|
|
if (!tmpfwbuf) {
|
|
BT_ERR("Unable to allocate buffer for firmware."
|
|
" Terminating download");
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
memset(tmpfwbuf, 0, tmpfwbufsz);
|
|
|
|
/* 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,
|
|
SQ_READ_BASE_ADDRESS_A0_REG, &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,
|
|
SQ_READ_BASE_ADDRESS_A1_REG, &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 + SDIO_BLOCK_SIZE - 1) / SDIO_BLOCK_SIZE;
|
|
|
|
memcpy(fwbuf, &firmware[offset], txlen);
|
|
}
|
|
|
|
ret = sdio_writesb(card->func, card->ioport, fwbuf,
|
|
tx_blocks * SDIO_BLOCK_SIZE);
|
|
|
|
if (ret < 0) {
|
|
BT_ERR("FW download, writesb(%d) failed @%d",
|
|
count, offset);
|
|
sdio_writeb(card->func, HOST_CMD53_FIN, CONFIG_REG,
|
|
&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);
|
|
|
|
if (fw_firmware)
|
|
release_firmware(fw_firmware);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
|
|
{
|
|
u16 buf_len = 0;
|
|
int ret, buf_block_len, 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;
|
|
buf_block_len = (buf_len + blksz - 1) / blksz;
|
|
|
|
if (buf_len <= SDIO_HEADER_LEN
|
|
|| (buf_block_len * blksz) > ALLOC_BUF_SIZE) {
|
|
BT_ERR("invalid packet length: %d", buf_len);
|
|
ret = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
/* Allocate buffer */
|
|
skb = bt_skb_alloc(buf_block_len * 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,
|
|
buf_block_len * 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 |= (u16) payload[1] << 8;
|
|
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)
|
|
btmrvl_check_evtpkt(priv, skb);
|
|
|
|
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("Unknow packet type:%d", type);
|
|
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload,
|
|
blksz * buf_block_len);
|
|
|
|
kfree_skb(skb);
|
|
skb = NULL;
|
|
break;
|
|
}
|
|
|
|
exit:
|
|
if (ret) {
|
|
hdev->stat.err_rx++;
|
|
if (skb)
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_get_int_status(struct btmrvl_private *priv, u8 * ireg)
|
|
{
|
|
int ret;
|
|
u8 sdio_ireg = 0;
|
|
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
|
|
|
|
*ireg = 0;
|
|
|
|
sdio_ireg = sdio_readb(card->func, HOST_INTSTATUS_REG, &ret);
|
|
if (ret) {
|
|
BT_ERR("sdio_readb: read int status register failed");
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
if (sdio_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("sdio_ireg = 0x%x", sdio_ireg);
|
|
|
|
sdio_writeb(card->func, ~(sdio_ireg) & (DN_LD_HOST_INT_STATUS |
|
|
UP_LD_HOST_INT_STATUS),
|
|
HOST_INTSTATUS_REG, &ret);
|
|
if (ret) {
|
|
BT_ERR("sdio_writeb: clear int status register "
|
|
"failed");
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
|
|
if (priv->btmrvl_dev.tx_dnld_rdy)
|
|
BT_DBG("tx_done already received: "
|
|
" int_status=0x%x", sdio_ireg);
|
|
else
|
|
priv->btmrvl_dev.tx_dnld_rdy = true;
|
|
}
|
|
|
|
if (sdio_ireg & UP_LD_HOST_INT_STATUS)
|
|
btmrvl_sdio_card_to_host(priv);
|
|
|
|
*ireg = sdio_ireg;
|
|
|
|
ret = 0;
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
static void btmrvl_sdio_interrupt(struct sdio_func *func)
|
|
{
|
|
struct btmrvl_private *priv;
|
|
struct hci_dev *hcidev;
|
|
struct btmrvl_sdio_card *card;
|
|
u8 ireg = 0;
|
|
|
|
card = sdio_get_drvdata(func);
|
|
if (card && card->priv) {
|
|
priv = card->priv;
|
|
hcidev = priv->btmrvl_dev.hcidev;
|
|
|
|
if (btmrvl_sdio_get_int_status(priv, &ireg))
|
|
BT_ERR("reading HOST_INT_STATUS_REG failed");
|
|
else
|
|
BT_DBG("HOST_INT_STATUS_REG %#x", ireg);
|
|
|
|
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, IO_PORT_0_REG, &ret);
|
|
if (ret < 0) {
|
|
ret = -EIO;
|
|
goto release_irq;
|
|
}
|
|
|
|
card->ioport = reg;
|
|
|
|
reg = sdio_readb(func, IO_PORT_1_REG, &ret);
|
|
if (ret < 0) {
|
|
ret = -EIO;
|
|
goto release_irq;
|
|
}
|
|
|
|
card->ioport |= (reg << 8);
|
|
|
|
reg = sdio_readb(func, IO_PORT_2_REG, &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);
|
|
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
|
|
payload, nb);
|
|
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);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (!card || !card->func) {
|
|
BT_ERR("card or function is NULL!");
|
|
return -EINVAL;
|
|
}
|
|
sdio_claim_host(card->func);
|
|
|
|
if (!btmrvl_sdio_verify_fw_download(card, 1)) {
|
|
BT_DBG("Firmware already downloaded!");
|
|
goto done;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
if (btmrvl_sdio_verify_fw_download(card, MAX_POLL_TRIES)) {
|
|
BT_ERR("FW failed to be active in time!");
|
|
ret = -ETIMEDOUT;
|
|
goto done;
|
|
}
|
|
|
|
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, CONFIG_REG, &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 = kzalloc(sizeof(*card), GFP_KERNEL);
|
|
if (!card) {
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
card->func = func;
|
|
|
|
if (id->driver_data) {
|
|
struct btmrvl_sdio_device *data = (void *) id->driver_data;
|
|
card->helper = data->helper;
|
|
card->firmware = data->firmware;
|
|
}
|
|
|
|
if (btmrvl_sdio_register_dev(card) < 0) {
|
|
BT_ERR("Failed to register BT device!");
|
|
ret = -ENODEV;
|
|
goto free_card;
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
msleep(100);
|
|
|
|
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;
|
|
|
|
btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
|
|
priv->btmrvl_dev.psmode = 1;
|
|
btmrvl_enable_ps(priv);
|
|
|
|
return 0;
|
|
|
|
disable_host_int:
|
|
btmrvl_sdio_disable_host_int(card);
|
|
unreg_dev:
|
|
btmrvl_sdio_unregister_dev(card);
|
|
free_card:
|
|
kfree(card);
|
|
done:
|
|
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);
|
|
kfree(card);
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct sdio_driver bt_mrvl_sdio = {
|
|
.name = "btmrvl_sdio",
|
|
.id_table = btmrvl_sdio_ids,
|
|
.probe = btmrvl_sdio_probe,
|
|
.remove = btmrvl_sdio_remove,
|
|
};
|
|
|
|
static int 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 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("sd8688_helper.bin");
|
|
MODULE_FIRMWARE("sd8688.bin");
|