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ath10k: sdio get target info

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Special BMI get target info function for SDIO.

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Erik Stromdahl 2017-04-26 12:17:57 +03:00 • committed by Kalle Valo
parent 60bdfffa12
commit 34dd398a55
3 changed files with 77 additions and 1 deletions
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71
drivers/net/wireless/ath/ath10k/bmi.c
View file

@ -97,6 +97,77 @@ int ath10k_bmi_get_target_info(struct ath10k *ar,
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)
{

2
drivers/net/wireless/ath/ath10k/bmi.h
View file

@ -198,6 +198,8 @@ void ath10k_bmi_start(struct ath10k *ar);
int ath10k_bmi_done(struct ath10k *ar);
int ath10k_bmi_get_target_info(struct ath10k *ar,
struct bmi_target_info *target_info);
int ath10k_bmi_get_target_info_sdio(struct ath10k *ar,
struct bmi_target_info *target_info);
int ath10k_bmi_read_memory(struct ath10k *ar, u32 address,
void *buffer, u32 length);
int ath10k_bmi_write_memory(struct ath10k *ar, u32 address,

5
drivers/net/wireless/ath/ath10k/core.c
View file

@ -2218,7 +2218,10 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
}
memset(&target_info, 0, sizeof(target_info));
ret = ath10k_bmi_get_target_info(ar, &target_info);
if (ar->hif.bus == ATH10K_BUS_SDIO)
ret = ath10k_bmi_get_target_info_sdio(ar, &target_info);
else
ret = ath10k_bmi_get_target_info(ar, &target_info);
if (ret) {
ath10k_err(ar, "could not get target info (%d)\n", ret);
goto err_power_down;