@@ -18,6 +18,8 @@
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/of.h>
+#include <linux/dmi.h>
+#include <linux/ctype.h>
#include <asm/byteorder.h>
#include "core.h"
@@ -704,6 +706,72 @@ static int ath10k_core_get_board_id_from_otp(struct ath10k *ar)
return 0;
}
+static void ath10k_core_check_bdfext(const struct dmi_header *hdr, void *data)
+{
+ struct ath10k *ar = data;
+ const char *bdf_ext;
+ const char *magic = ATH10K_SMBIOS_BDF_EXT_MAGIC;
+ u8 bdf_enabled;
+ int i;
+
+ if (hdr->type != ATH10K_SMBIOS_BDF_EXT_TYPE)
+ return;
+
+ if (hdr->length != ATH10K_SMBIOS_BDF_EXT_LENGTH) {
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "wrong smbios bdf ext type length (%d).\n",
+ hdr->length);
+ return;
+ }
+
+ bdf_enabled = *((u8 *)hdr + ATH10K_SMBIOS_BDF_EXT_OFFSET);
+ if (!bdf_enabled) {
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "bdf variant name not found.\n");
+ return;
+ }
+
+ /* Only one string exists (per spec) */
+ bdf_ext = (char *)hdr + hdr->length;
+
+ if (memcmp(bdf_ext, magic, strlen(magic)) != 0) {
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "bdf variant magic does not match.\n");
+ return;
+ }
+
+ for (i = 0; i < strlen(bdf_ext); i++) {
+ if (!isascii(bdf_ext[i]) || !isprint(bdf_ext[i])) {
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "bdf variant name contains non ascii chars.\n");
+ return;
+ }
+ }
+
+ /* Copy extension name without magic suffix */
+ if (strscpy(ar->id.bdf_ext, bdf_ext + strlen(magic),
+ sizeof(ar->id.bdf_ext)) < 0) {
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "bdf variant string is longer than the buffer can accommodate (variant: %s)\n",
+ bdf_ext);
+ return;
+ }
+
+ ath10k_dbg(ar, ATH10K_DBG_BOOT,
+ "found and validated bdf variant smbios_type 0x%x bdf %s\n",
+ ATH10K_SMBIOS_BDF_EXT_TYPE, bdf_ext);
+}
+
+static int ath10k_core_check_smbios(struct ath10k *ar)
+{
+ ar->id.bdf_ext[0] = '\0';
+ dmi_walk(ath10k_core_check_bdfext, ar);
+
+ if (ar->id.bdf_ext[0] == '\0')
+ return -ENODATA;
+
+ return 0;
+}
+
static int ath10k_download_and_run_otp(struct ath10k *ar)
{
u32 result, address = ar->hw_params.patch_load_addr;
@@ -1013,6 +1081,23 @@ static int ath10k_core_fetch_board_data_api_n(struct ath10k *ar,
case ATH10K_BD_IE_BOARD:
ret = ath10k_core_parse_bd_ie_board(ar, data, ie_len,
boardname);
+ if (ret == -ENOENT && ar->id.bdf_ext[0] != '\0') {
+ /* try default bdf if variant was not found */
+ char *s, *v = ",variant=";
+ char boardname2[100];
+
+ strlcpy(boardname2, boardname,
+ sizeof(boardname2));
+
+ s = strstr(boardname2, v);
+ if (s)
+ *s = '\0'; /* strip ",variant=%s" */
+
+ ret = ath10k_core_parse_bd_ie_board(ar, data,
+ ie_len,
+ boardname2);
+ }
+
if (ret == -ENOENT)
/* no match found, continue */
break;
@@ -1050,6 +1135,9 @@ static int ath10k_core_fetch_board_data_api_n(struct ath10k *ar,
static int ath10k_core_create_board_name(struct ath10k *ar, char *name,
size_t name_len)
{
+ /* strlen(',variant=') + strlen(ar->id.bdf_ext) */
+ char variant[9 + ATH10K_SMBIOS_BDF_EXT_STR_LENGTH] = { 0 };
+
if (ar->id.bmi_ids_valid) {
scnprintf(name, name_len,
"bus=%s,bmi-chip-id=%d,bmi-board-id=%d",
@@ -1059,12 +1147,15 @@ static int ath10k_core_create_board_name(struct ath10k *ar, char *name,
goto out;
}
+ if (ar->id.bdf_ext[0] != '\0')
+ scnprintf(variant, sizeof(variant), ",variant=%s",
+ ar->id.bdf_ext);
+
scnprintf(name, name_len,
- "bus=%s,vendor=%04x,device=%04x,subsystem-vendor=%04x,subsystem-device=%04x",
+ "bus=%s,vendor=%04x,device=%04x,subsystem-vendor=%04x,subsystem-device=%04x%s",
ath10k_bus_str(ar->hif.bus),
ar->id.vendor, ar->id.device,
- ar->id.subsystem_vendor, ar->id.subsystem_device);
-
+ ar->id.subsystem_vendor, ar->id.subsystem_device, variant);
out:
ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot using board name '%s'\n", name);
@@ -2123,6 +2214,10 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
goto err_free_firmware_files;
}
+ ret = ath10k_core_check_smbios(ar);
+ if (ret)
+ ath10k_dbg(ar, ATH10K_DBG_BOOT, "bdf variant name not set.\n");
+
ret = ath10k_core_fetch_board_file(ar);
if (ret) {
ath10k_err(ar, "failed to fetch board file: %d\n", ret);
@@ -69,6 +69,23 @@
#define ATH10K_NAPI_BUDGET 64
#define ATH10K_NAPI_QUOTA_LIMIT 60
+/* SMBIOS type containing Board Data File Name Extension */
+#define ATH10K_SMBIOS_BDF_EXT_TYPE 0xF8
+
+/* SMBIOS type structure length (excluding strings-set) */
+#define ATH10K_SMBIOS_BDF_EXT_LENGTH 0x9
+
+/* Offset pointing to Board Data File Name Extension */
+#define ATH10K_SMBIOS_BDF_EXT_OFFSET 0x8
+
+/* Board Data File Name Extension string length.
+ * String format: BDF_<Customer ID>_<Extension>\0
+ */
+#define ATH10K_SMBIOS_BDF_EXT_STR_LENGTH 0x20
+
+/* The magic used by QCA spec */
+#define ATH10K_SMBIOS_BDF_EXT_MAGIC "BDF_"
+
struct ath10k;
enum ath10k_bus {
@@ -781,6 +798,8 @@ struct ath10k {
bool bmi_ids_valid;
u8 bmi_board_id;
u8 bmi_chip_id;
+
+ char bdf_ext[ATH10K_SMBIOS_BDF_EXT_STR_LENGTH];
} id;
int fw_api;