linux/drivers/bluetooth/btmrvl_sdio.c

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/**
* 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 cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
#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_card_reg btmrvl_reg_88xx = {
.cfg = 0x00,
.host_int_mask = 0x02,
.host_intstatus = 0x03,
.card_status = 0x50,
.sq_read_base_addr_a0 = 0x60,
.sq_read_base_addr_a1 = 0x61,
.card_revision = 0xbc,
.card_fw_status0 = 0xc0,
.card_fw_status1 = 0xc1,
.card_rx_len = 0xc2,
.card_rx_unit = 0xc3,
.io_port_0 = 0xd8,
.io_port_1 = 0xd9,
.io_port_2 = 0xda,
};
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 btmrvl_sdio_device btmrvl_sdio_sd8897 = {
.helper = NULL,
.firmware = "mrvl/sd8897_uapsta.bin",
.reg = &btmrvl_reg_88xx,
.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 },
/* Marvell SD8897 Bluetooth device */
{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
.driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
{ } /* 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 = DIV_ROUND_UP(txlen, 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");
ret = -ENOMEM;
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];
Bluetooth: btmrvl: Fix skb buffer overflow Add extra check to avoid skb buffer overflow. Fixes crash below: [ 101.030427] ------------[ cut here ]------------ [ 101.030459] kernel BUG at net/core/skbuff.c:127! [ 101.030486] invalid opcode: 0000 [#1] SMP ... [ 101.030806] Pid: 2010, comm: btmrvl_main_ser Not tainted 3.5.0+ #80 Laptop [ 101.030859] EIP: 0060:[<c14f2ba9>] EFLAGS: 00010282 CPU: 0 [ 101.030894] EIP is at skb_put+0x99/0xa0 [ 101.030919] EAX: 00000080 EBX: f129380b ECX: ef923540 EDX: 00000001 [ 101.030956] ESI: f00a4000 EDI: 00001003 EBP: ed4a5efc ESP: ed4a5ecc [ 101.030992] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 101.031024] CR0: 8005003b CR2: 08fca014 CR3: 30960000 CR4: 000407f0 [ 101.031062] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 101.031100] DR6: ffff0ff0 DR7: 00000400 [ 101.031125] Process btmrvl_main_ser (pid: 2010, ti=ed4a4000 task=ef923540 task.ti=ed4a4000) [ 101.031174] Stack: [ 101.031188] c18126f8 c1651938 f853f8d2 00001003 00001003 f1292800 f1292808 f129380b [ 101.031250] f1292940 f00a4000 eddb1280 efc0f9c0 ed4a5f44 f853f8d2 00000040 00000000 [ 101.031312] ef923540 c15ee096 ef923540 eddb12d4 00000004 f00a4000 00000040 00000000 [ 101.031376] Call Trace: [ 101.031396] [<f853f8d2>] ? btmrvl_sdio_process_int_status+0x272/0x3d0 [btmrvl_sdio] [ 101.031444] [<f853f8d2>] btmrvl_sdio_process_int_status+0x272/0x3d0 [btmrvl_sdio] [ 101.031488] [<c15ee096>] ? _raw_spin_unlock_irqrestore+0x36/0x70 [ 101.031526] [<f85a46e4>] btmrvl_service_main_thread+0x244/0x300 [btmrvl] [ 101.031568] [<f853fb50>] ? btmrvl_sdio_poll_card_status.isra.6.constprop.7+0x90/0x90 [btmrvl_sdio] [ 101.031619] [<c107eda0>] ? try_to_wake_up+0x270/0x270 [ 101.031648] [<f85a44a0>] ? btmrvl_process_event+0x3b0/0x3b0 [btmrvl] [ 101.031686] [<c106d19d>] kthread+0x7d/0x90 [ 101.031713] [<c106d120>] ? flush_kthread_work+0x150/0x150 [ 101.031745] [<c15f5a82>] kernel_thread_helper+0x6/0x10 ... [ 101.032008] EIP: [<c14f2ba9>] skb_put+0x99/0xa0 SS:ESP 0068:ed4a5ecc [ 101.056125] ---[ end trace a0bd01d1a9a796c8 ]--- Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-28 11:36:10 +00:00
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_put(skb, buf_len);
skb_pull(skb, SDIO_HEADER_LEN);
if (type == HCI_EVENT_PKT) {
if (btmrvl_check_evtpkt(priv, skb))
hci_recv_frame(hdev, skb);
} else {
hci_recv_frame(hdev, skb);
}
hdev->stat.byte_rx += buf_len;
break;
case MRVL_VENDOR_PKT:
bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
skb_put(skb, buf_len);
skb_pull(skb, SDIO_HEADER_LEN);
if (btmrvl_process_event(priv, skb))
hci_recv_frame(hdev, 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 = DIV_ROUND_UP(nb, 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;
}
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");
MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");