Quoting Youghandhar Chintala (2022-11-04 01:28:28)
> In a SoC based solution, it would be useful to know the versions of the
> various binary firmware blobs the system is running on. On a QCOM based
> SoC, this info can be obtained from socinfo debugfs infrastructure. For
> this to work, respective subsystem drivers have to export the firmware
> version information to an SMEM based version information table.
>
> Having firmware version information at one place will help quickly
> figure out the firmware versions of various subsystems on the device
> instead of going through builds/logs in an event of a system crash.
>
> Fill WLAN firmware version information in SMEM version table to be
> printed as part of socinfo debugfs infrastructure on a Qualcomm based
> SoC.
>
> This change is applicable only for WCN399X targets.
>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.2.2.c10-00754-QCAHLSWMTPL-1
>
> Signed-off-by: Youghandhar Chintala <quic_youghand@xxxxxxxxxxx>
The trailers go together, no blank lines between them.
>
> ---
> Changes from v1:
> - Changed print format specifier to %zu from %i
> - Changed ath10k_qmi_add_wlan_ver_smem() API argument
> to const char *fw_build_id from char *fw_build_id
> - Changed version_string_size with MACRO
> ---
> drivers/net/wireless/ath/ath10k/qmi.c | 28 +++++++++++++++++++++++++++
> 1 file changed, 28 insertions(+)
>
> diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c
> index 66cb7a1e628a..928d78f6d494 100644
> --- a/drivers/net/wireless/ath/ath10k/qmi.c
> +++ b/drivers/net/wireless/ath/ath10k/qmi.c
> @@ -14,6 +14,7 @@
> #include <linux/net.h>
> #include <linux/platform_device.h>
> #include <linux/qcom_scm.h>
> +#include <linux/soc/qcom/smem.h>
> #include <linux/string.h>
> #include <net/sock.h>
>
> @@ -22,6 +23,8 @@
>
> #define ATH10K_QMI_CLIENT_ID 0x4b4e454c
> #define ATH10K_QMI_TIMEOUT 30
> +#define ATH10K_SMEM_IMAGE_VERSION_TABLE 469
> +#define ATH10K_SMEM_IMAGE_TABLE_CNSS_INDEX 13
>
> static int ath10k_qmi_map_msa_permission(struct ath10k_qmi *qmi,
> struct ath10k_msa_mem_info *mem_info)
> @@ -536,6 +539,29 @@ int ath10k_qmi_wlan_disable(struct ath10k *ar)
> return ath10k_qmi_mode_send_sync_msg(ar, QMI_WLFW_OFF_V01);
> }
>
> +static void ath10k_qmi_add_wlan_ver_smem(struct ath10k *ar, const char *fw_build_id)
> +{
> + u8 *smem_table_ptr;
> + size_t smem_block_size;
> + const u32 version_string_size = MAX_BUILD_ID_LEN;
Why not make this size_t as well so the type is the same for the
comparison with smem_block_size?
> + const u32 smem_img_idx_wlan = ATH10K_SMEM_IMAGE_TABLE_CNSS_INDEX * 128;
> +
> + smem_table_ptr = qcom_smem_get(QCOM_SMEM_HOST_ANY,
> + ATH10K_SMEM_IMAGE_VERSION_TABLE,
> + &smem_block_size);
> + if (IS_ERR(smem_table_ptr)) {
> + ath10k_dbg(ar, ATH10K_DBG_QMI, "smem image version table not found");
Is this missing a newline?
> + return;
> + }
> + if (smem_img_idx_wlan + version_string_size > smem_block_size) {
> + ath10k_dbg(ar, ATH10K_DBG_QMI, "smem block size too small: %zu",
Same newline question.
> + smem_block_size);
> + return;
> + }
> + memcpy(smem_table_ptr + smem_img_idx_wlan, fw_build_id,
Is it a string? Does it need to be NUL terminated? Should this use some
sort of strcpy()? Does the comparison above need to leave a space for
the NUL terminator?
> + version_string_size);
> +}
> +
> static int ath10k_qmi_cap_send_sync_msg(struct ath10k_qmi *qmi)
> {
> struct wlfw_cap_resp_msg_v01 *resp;
