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Commit 34dd398a authored by Erik Stromdahl's avatar Erik Stromdahl Committed by Kalle Valo
Browse files

ath10k: sdio get target info



Special BMI get target info function for SDIO.

Signed-off-by: default avatarErik Stromdahl <erik.stromdahl@gmail.com>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent 60bdfffa
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+71 −0
Original line number Diff line number Diff line
@@ -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 −0
Original line number Diff line number Diff line
@@ -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,
+4 −1
Original line number Diff line number Diff line
@@ -2218,6 +2218,9 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
	}

	memset(&target_info, 0, sizeof(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);