diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c index 9a9a471ff130..c68750cb3c4d 100644 --- a/drivers/net/wireless/ath/ath12k/core.c +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -398,6 +398,75 @@ static void ath12k_core_stop(struct ath12k_base *ab) /* De-Init of components as needed */ } +static void ath12k_core_check_bdfext(const struct dmi_header *hdr, void *data) +{ + struct ath12k_base *ab = data; + const char *magic = ATH12K_SMBIOS_BDF_EXT_MAGIC; + struct ath12k_smbios_bdf *smbios = (struct ath12k_smbios_bdf *)hdr; + ssize_t copied; + size_t len; + int i; + + if (ab->qmi.target.bdf_ext[0] != '\0') + return; + + if (hdr->type != ATH12K_SMBIOS_BDF_EXT_TYPE) + return; + + if (hdr->length != ATH12K_SMBIOS_BDF_EXT_LENGTH) { + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "wrong smbios bdf ext type length (%d).\n", + hdr->length); + return; + } + + if (!smbios->bdf_enabled) { + ath12k_dbg(ab, ATH12K_DBG_BOOT, "bdf variant name not found.\n"); + return; + } + + /* Only one string exists (per spec) */ + if (memcmp(smbios->bdf_ext, magic, strlen(magic)) != 0) { + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "bdf variant magic does not match.\n"); + return; + } + + len = min_t(size_t, + strlen(smbios->bdf_ext), sizeof(ab->qmi.target.bdf_ext)); + for (i = 0; i < len; i++) { + if (!isascii(smbios->bdf_ext[i]) || !isprint(smbios->bdf_ext[i])) { + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "bdf variant name contains non ascii chars.\n"); + return; + } + } + + /* Copy extension name without magic prefix */ + copied = strscpy(ab->qmi.target.bdf_ext, smbios->bdf_ext + strlen(magic), + sizeof(ab->qmi.target.bdf_ext)); + if (copied < 0) { + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "bdf variant string is longer than the buffer can accommodate\n"); + return; + } + + ath12k_dbg(ab, ATH12K_DBG_BOOT, + "found and validated bdf variant smbios_type 0x%x bdf %s\n", + ATH12K_SMBIOS_BDF_EXT_TYPE, ab->qmi.target.bdf_ext); +} + +int ath12k_core_check_smbios(struct ath12k_base *ab) +{ + ab->qmi.target.bdf_ext[0] = '\0'; + dmi_walk(ath12k_core_check_bdfext, ab); + + if (ab->qmi.target.bdf_ext[0] == '\0') + return -ENODATA; + + return 0; +} + static int ath12k_core_soc_create(struct ath12k_base *ab) { int ret; diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h index 3f5f0471f640..254eb42a85c5 100644 --- a/drivers/net/wireless/ath/ath12k/core.h +++ b/drivers/net/wireless/ath/ath12k/core.h @@ -11,6 +11,8 @@ #include #include #include +#include +#include #include "qmi.h" #include "htc.h" #include "wmi.h" @@ -32,6 +34,15 @@ /* Pending management packets threshold for dropping probe responses */ #define ATH12K_PRB_RSP_DROP_THRESHOLD ((ATH12K_TX_MGMT_TARGET_MAX_SUPPORT_WMI * 3) / 4) +/* SMBIOS type containing Board Data File Name Extension */ +#define ATH12K_SMBIOS_BDF_EXT_TYPE 0xF8 + +/* SMBIOS type structure length (excluding strings-set) */ +#define ATH12K_SMBIOS_BDF_EXT_LENGTH 0x9 + +/* The magic used by QCA spec */ +#define ATH12K_SMBIOS_BDF_EXT_MAGIC "BDF_" + #define ATH12K_INVALID_HW_MAC_ID 0xFF #define ATH12K_RX_RATE_TABLE_NUM 320 #define ATH12K_RX_RATE_TABLE_11AX_NUM 576 @@ -129,6 +140,13 @@ struct ath12k_ext_irq_grp { struct net_device napi_ndev; }; +struct ath12k_smbios_bdf { + struct dmi_header hdr; + u32 padding; + u8 bdf_enabled; + u8 bdf_ext[]; +} __packed; + #define HEHANDLE_CAP_PHYINFO_SIZE 3 #define HECAP_PHYINFO_SIZE 9 #define HECAP_MACINFO_SIZE 5 @@ -792,7 +810,8 @@ int ath12k_core_fetch_board_data_api_1(struct ath12k_base *ab, int ath12k_core_fetch_bdf(struct ath12k_base *ath12k, struct ath12k_board_data *bd); void ath12k_core_free_bdf(struct ath12k_base *ab, struct ath12k_board_data *bd); - +int ath12k_core_check_dt(struct ath12k_base *ath12k); +int ath12k_core_check_smbios(struct ath12k_base *ab); void ath12k_core_halt(struct ath12k *ar); int ath12k_core_resume(struct ath12k_base *ab); int ath12k_core_suspend(struct ath12k_base *ab); diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c index b2db0436bdde..fd1bf53c2502 100644 --- a/drivers/net/wireless/ath/ath12k/qmi.c +++ b/drivers/net/wireless/ath/ath12k/qmi.c @@ -2213,6 +2213,7 @@ static int ath12k_qmi_request_target_cap(struct ath12k_base *ab) struct qmi_txn txn = {}; unsigned int board_id = ATH12K_BOARD_ID_DEFAULT; int ret = 0; + int r; int i; memset(&req, 0, sizeof(req)); @@ -2297,6 +2298,10 @@ static int ath12k_qmi_request_target_cap(struct ath12k_base *ab) ab->qmi.target.fw_build_timestamp, ab->qmi.target.fw_build_id); + r = ath12k_core_check_smbios(ab); + if (r) + ath12k_dbg(ab, ATH12K_DBG_QMI, "SMBIOS bdf variant name not set.\n"); + out: return ret; }