blob: 4481ed375f55d95143222a461905e37c4111fbeb [file] [log] [blame]
// SPDX-License-Identifier: ISC
/*
* Copyright (c) 2005-2011 Atheros Communications Inc.
* Copyright (c) 2011-2014,2016-2017 Qualcomm Atheros, Inc.
*/
#include "bmi.h"
#include "hif.h"
#include "debug.h"
#include "htc.h"
#include "hw.h"
void ath10k_bmi_start(struct ath10k *ar)
{
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi start\n");
ar->bmi.done_sent = false;
}
EXPORT_SYMBOL(ath10k_bmi_start);
int ath10k_bmi_done(struct ath10k *ar)
{
struct bmi_cmd cmd;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.done);
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi done\n");
if (ar->bmi.done_sent) {
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi skipped\n");
return 0;
}
ar->bmi.done_sent = true;
cmd.id = __cpu_to_le32(BMI_DONE);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
if (ret) {
ath10k_warn(ar, "unable to write to the device: %d\n", ret);
return ret;
}
return 0;
}
int ath10k_bmi_get_target_info(struct ath10k *ar,
struct bmi_target_info *target_info)
{
struct bmi_cmd cmd;
union bmi_resp resp;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.get_target_info);
u32 resplen = sizeof(resp.get_target_info);
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi get target info\n");
if (ar->bmi.done_sent) {
ath10k_warn(ar, "BMI Get Target Info Command disallowed\n");
return -EBUSY;
}
cmd.id = __cpu_to_le32(BMI_GET_TARGET_INFO);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
if (ret) {
ath10k_warn(ar, "unable to get target info from device\n");
return ret;
}
if (resplen < sizeof(resp.get_target_info)) {
ath10k_warn(ar, "invalid get_target_info response length (%d)\n",
resplen);
return -EIO;
}
target_info->version = __le32_to_cpu(resp.get_target_info.version);
target_info->type = __le32_to_cpu(resp.get_target_info.type);
return 0;
}
#define TARGET_VERSION_SENTINAL 0xffffffffu
int ath10k_bmi_get_target_info_sdio(struct ath10k *ar,
struct bmi_target_info *target_info)
{
struct bmi_cmd cmd;
union bmi_resp resp;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.get_target_info);
u32 resplen, ver_len;
__le32 tmp;
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi get target info SDIO\n");
if (ar->bmi.done_sent) {
ath10k_warn(ar, "BMI Get Target Info Command disallowed\n");
return -EBUSY;
}
cmd.id = __cpu_to_le32(BMI_GET_TARGET_INFO);
/* Step 1: Read 4 bytes of the target info and check if it is
* the special sentinal version word or the first word in the
* version response.
*/
resplen = sizeof(u32);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &tmp, &resplen);
if (ret) {
ath10k_warn(ar, "unable to read from device\n");
return ret;
}
/* Some SDIO boards have a special sentinal byte before the real
* version response.
*/
if (__le32_to_cpu(tmp) == TARGET_VERSION_SENTINAL) {
/* Step 1b: Read the version length */
resplen = sizeof(u32);
ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0, &tmp,
&resplen);
if (ret) {
ath10k_warn(ar, "unable to read from device\n");
return ret;
}
}
ver_len = __le32_to_cpu(tmp);
/* Step 2: Check the target info length */
if (ver_len != sizeof(resp.get_target_info)) {
ath10k_warn(ar, "Unexpected target info len: %u. Expected: %zu\n",
ver_len, sizeof(resp.get_target_info));
return -EINVAL;
}
/* Step 3: Read the rest of the version response */
resplen = sizeof(resp.get_target_info) - sizeof(u32);
ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0,
&resp.get_target_info.version,
&resplen);
if (ret) {
ath10k_warn(ar, "unable to read from device\n");
return ret;
}
target_info->version = __le32_to_cpu(resp.get_target_info.version);
target_info->type = __le32_to_cpu(resp.get_target_info.type);
return 0;
}
int ath10k_bmi_read_memory(struct ath10k *ar,
u32 address, void *buffer, u32 length)
{
struct bmi_cmd cmd;
union bmi_resp resp;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.read_mem);
u32 rxlen;
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read address 0x%x length %d\n",
address, length);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "command disallowed\n");
return -EBUSY;
}
while (length) {
rxlen = min_t(u32, length, BMI_MAX_DATA_SIZE);
cmd.id = __cpu_to_le32(BMI_READ_MEMORY);
cmd.read_mem.addr = __cpu_to_le32(address);
cmd.read_mem.len = __cpu_to_le32(rxlen);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen,
&resp, &rxlen);
if (ret) {
ath10k_warn(ar, "unable to read from the device (%d)\n",
ret);
return ret;
}
memcpy(buffer, resp.read_mem.payload, rxlen);
address += rxlen;
buffer += rxlen;
length -= rxlen;
}
return 0;
}
EXPORT_SYMBOL(ath10k_bmi_read_memory);
int ath10k_bmi_write_soc_reg(struct ath10k *ar, u32 address, u32 reg_val)
{
struct bmi_cmd cmd;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.write_soc_reg);
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI,
"bmi write soc register 0x%08x val 0x%08x\n",
address, reg_val);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "bmi write soc register command in progress\n");
return -EBUSY;
}
cmd.id = __cpu_to_le32(BMI_WRITE_SOC_REGISTER);
cmd.write_soc_reg.addr = __cpu_to_le32(address);
cmd.write_soc_reg.value = __cpu_to_le32(reg_val);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
if (ret) {
ath10k_warn(ar, "Unable to write soc register to device: %d\n",
ret);
return ret;
}
return 0;
}
int ath10k_bmi_read_soc_reg(struct ath10k *ar, u32 address, u32 *reg_val)
{
struct bmi_cmd cmd;
union bmi_resp resp;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.read_soc_reg);
u32 resplen = sizeof(resp.read_soc_reg);
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read soc register 0x%08x\n",
address);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "bmi read soc register command in progress\n");
return -EBUSY;
}
cmd.id = __cpu_to_le32(BMI_READ_SOC_REGISTER);
cmd.read_soc_reg.addr = __cpu_to_le32(address);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
if (ret) {
ath10k_warn(ar, "Unable to read soc register from device: %d\n",
ret);
return ret;
}
*reg_val = __le32_to_cpu(resp.read_soc_reg.value);
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read soc register value 0x%08x\n",
*reg_val);
return 0;
}
int ath10k_bmi_write_memory(struct ath10k *ar,
u32 address, const void *buffer, u32 length)
{
struct bmi_cmd cmd;
u32 hdrlen = sizeof(cmd.id) + sizeof(cmd.write_mem);
u32 txlen;
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi write address 0x%x length %d\n",
address, length);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "command disallowed\n");
return -EBUSY;
}
while (length) {
txlen = min(length, BMI_MAX_DATA_SIZE - hdrlen);
/* copy before roundup to avoid reading beyond buffer*/
memcpy(cmd.write_mem.payload, buffer, txlen);
txlen = roundup(txlen, 4);
cmd.id = __cpu_to_le32(BMI_WRITE_MEMORY);
cmd.write_mem.addr = __cpu_to_le32(address);
cmd.write_mem.len = __cpu_to_le32(txlen);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, hdrlen + txlen,
NULL, NULL);
if (ret) {
ath10k_warn(ar, "unable to write to the device (%d)\n",
ret);
return ret;
}
/* fixup roundup() so `length` zeroes out for last chunk */
txlen = min(txlen, length);
address += txlen;
buffer += txlen;
length -= txlen;
}
return 0;
}
int ath10k_bmi_execute(struct ath10k *ar, u32 address, u32 param, u32 *result)
{
struct bmi_cmd cmd;
union bmi_resp resp;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.execute);
u32 resplen = sizeof(resp.execute);
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi execute address 0x%x param 0x%x\n",
address, param);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "command disallowed\n");
return -EBUSY;
}
cmd.id = __cpu_to_le32(BMI_EXECUTE);
cmd.execute.addr = __cpu_to_le32(address);
cmd.execute.param = __cpu_to_le32(param);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
if (ret) {
ath10k_warn(ar, "unable to read from the device\n");
return ret;
}
if (resplen < sizeof(resp.execute)) {
ath10k_warn(ar, "invalid execute response length (%d)\n",
resplen);
return -EIO;
}
*result = __le32_to_cpu(resp.execute.result);
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi execute result 0x%x\n", *result);
return 0;
}
static int ath10k_bmi_lz_data_large(struct ath10k *ar, const void *buffer, u32 length)
{
struct bmi_cmd *cmd;
u32 hdrlen = sizeof(cmd->id) + sizeof(cmd->lz_data);
u32 txlen;
int ret;
size_t buf_len;
ath10k_dbg(ar, ATH10K_DBG_BMI, "large bmi lz data buffer 0x%pK length %d\n",
buffer, length);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "command disallowed\n");
return -EBUSY;
}
buf_len = sizeof(*cmd) + BMI_MAX_LARGE_DATA_SIZE - BMI_MAX_DATA_SIZE;
cmd = kzalloc(buf_len, GFP_KERNEL);
if (!cmd)
return -ENOMEM;
while (length) {
txlen = min(length, BMI_MAX_LARGE_DATA_SIZE - hdrlen);
WARN_ON_ONCE(txlen & 3);
cmd->id = __cpu_to_le32(BMI_LZ_DATA);
cmd->lz_data.len = __cpu_to_le32(txlen);
memcpy(cmd->lz_data.payload, buffer, txlen);
ret = ath10k_hif_exchange_bmi_msg(ar, cmd, hdrlen + txlen,
NULL, NULL);
if (ret) {
ath10k_warn(ar, "unable to write to the device\n");
kfree(cmd);
return ret;
}
buffer += txlen;
length -= txlen;
}
kfree(cmd);
return 0;
}
int ath10k_bmi_lz_data(struct ath10k *ar, const void *buffer, u32 length)
{
struct bmi_cmd cmd;
u32 hdrlen = sizeof(cmd.id) + sizeof(cmd.lz_data);
u32 txlen;
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi lz data buffer 0x%pK length %d\n",
buffer, length);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "command disallowed\n");
return -EBUSY;
}
while (length) {
txlen = min(length, BMI_MAX_DATA_SIZE - hdrlen);
WARN_ON_ONCE(txlen & 3);
cmd.id = __cpu_to_le32(BMI_LZ_DATA);
cmd.lz_data.len = __cpu_to_le32(txlen);
memcpy(cmd.lz_data.payload, buffer, txlen);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, hdrlen + txlen,
NULL, NULL);
if (ret) {
ath10k_warn(ar, "unable to write to the device\n");
return ret;
}
buffer += txlen;
length -= txlen;
}
return 0;
}
int ath10k_bmi_lz_stream_start(struct ath10k *ar, u32 address)
{
struct bmi_cmd cmd;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.lz_start);
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi lz stream start address 0x%x\n",
address);
if (ar->bmi.done_sent) {
ath10k_warn(ar, "command disallowed\n");
return -EBUSY;
}
cmd.id = __cpu_to_le32(BMI_LZ_STREAM_START);
cmd.lz_start.addr = __cpu_to_le32(address);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
if (ret) {
ath10k_warn(ar, "unable to Start LZ Stream to the device\n");
return ret;
}
return 0;
}
int ath10k_bmi_fast_download(struct ath10k *ar,
u32 address, const void *buffer, u32 length)
{
u8 trailer[4] = {};
u32 head_len = rounddown(length, 4);
u32 trailer_len = length - head_len;
int ret;
ath10k_dbg(ar, ATH10K_DBG_BMI,
"bmi fast download address 0x%x buffer 0x%pK length %d\n",
address, buffer, length);
ret = ath10k_bmi_lz_stream_start(ar, address);
if (ret)
return ret;
/* copy the last word into a zero padded buffer */
if (trailer_len > 0)
memcpy(trailer, buffer + head_len, trailer_len);
if (ar->hw_params.bmi_large_size_download)
ret = ath10k_bmi_lz_data_large(ar, buffer, head_len);
else
ret = ath10k_bmi_lz_data(ar, buffer, head_len);
if (ret)
return ret;
if (trailer_len > 0)
ret = ath10k_bmi_lz_data(ar, trailer, 4);
if (ret != 0)
return ret;
/*
* Close compressed stream and open a new (fake) one.
* This serves mainly to flush Target caches.
*/
ret = ath10k_bmi_lz_stream_start(ar, 0x00);
return ret;
}
int ath10k_bmi_set_start(struct ath10k *ar, u32 address)
{
struct bmi_cmd cmd;
u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.set_app_start);
int ret;
if (ar->bmi.done_sent) {
ath10k_warn(ar, "bmi set start command disallowed\n");
return -EBUSY;
}
cmd.id = __cpu_to_le32(BMI_SET_APP_START);
cmd.set_app_start.addr = __cpu_to_le32(address);
ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
if (ret) {
ath10k_warn(ar, "unable to set start to the device:%d\n", ret);
return ret;
}
return 0;
}