diff options
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btintel.c | 88 | ||||
| -rw-r--r-- | drivers/bluetooth/btintel.h | 6 |
2 files changed, 73 insertions, 21 deletions
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index ff33e1aa2929..5d735391545a 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -631,6 +631,10 @@ int btintel_parse_version_tlv(struct hci_dev *hdev, case INTEL_TLV_GIT_SHA1: version->git_sha1 = get_unaligned_le32(tlv->val); break; + case INTEL_TLV_FW_ID: + snprintf(version->fw_id, sizeof(version->fw_id), + "%s", tlv->val); + break; default: /* Ignore rest of information */ break; @@ -2133,30 +2137,61 @@ static void btintel_get_fw_name_tlv(const struct intel_version_tlv *ver, const char *suffix) { const char *format; - /* The firmware file name for new generation controllers will be - * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step> - */ - switch (ver->cnvi_top & 0xfff) { + u32 cnvi, cnvr; + + cnvi = INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvi_top), + INTEL_CNVX_TOP_STEP(ver->cnvi_top)); + + cnvr = INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvr_top), + INTEL_CNVX_TOP_STEP(ver->cnvr_top)); + /* Only Blazar product supports downloading of intermediate loader * image */ - case BTINTEL_CNVI_BLAZARI: - if (ver->img_type == BTINTEL_IMG_BOOTLOADER) + if ((ver->cnvi_top & 0xfff) >= BTINTEL_CNVI_BLAZARI) { + u8 zero[BTINTEL_FWID_MAXLEN]; + + if (ver->img_type == BTINTEL_IMG_BOOTLOADER) { format = "intel/ibt-%04x-%04x-iml.%s"; - else - format = "intel/ibt-%04x-%04x.%s"; - break; - default: - format = "intel/ibt-%04x-%04x.%s"; - break; + snprintf(fw_name, len, format, cnvi, cnvr, suffix); + return; + } + + memset(zero, 0, sizeof(zero)); + + /* ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step-fw_id> */ + if (memcmp(ver->fw_id, zero, sizeof(zero))) { + format = "intel/ibt-%04x-%04x-%s.%s"; + snprintf(fw_name, len, format, cnvi, cnvr, + ver->fw_id, suffix); + return; + } + /* If firmware id is not present, fallback to legacy naming + * convention + */ } + /* Fallback to legacy naming convention for other controllers + * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step> + */ + format = "intel/ibt-%04x-%04x.%s"; + snprintf(fw_name, len, format, cnvi, cnvr, suffix); +} + +static void btintel_get_iml_tlv(const struct intel_version_tlv *ver, + char *fw_name, size_t len, + const char *suffix) +{ + const char *format; + u32 cnvi, cnvr; + + cnvi = INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvi_top), + INTEL_CNVX_TOP_STEP(ver->cnvi_top)); - snprintf(fw_name, len, format, - INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvi_top), - INTEL_CNVX_TOP_STEP(ver->cnvi_top)), - INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvr_top), - INTEL_CNVX_TOP_STEP(ver->cnvr_top)), - suffix); + cnvr = INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver->cnvr_top), + INTEL_CNVX_TOP_STEP(ver->cnvr_top)); + + format = "intel/ibt-%04x-%04x-iml.%s"; + snprintf(fw_name, len, format, cnvi, cnvr, suffix); } static int btintel_prepare_fw_download_tlv(struct hci_dev *hdev, @@ -2164,7 +2199,7 @@ static int btintel_prepare_fw_download_tlv(struct hci_dev *hdev, u32 *boot_param) { const struct firmware *fw; - char fwname[64]; + char fwname[128]; int err; ktime_t calltime; @@ -2199,7 +2234,20 @@ static int btintel_prepare_fw_download_tlv(struct hci_dev *hdev, } } - btintel_get_fw_name_tlv(ver, fwname, sizeof(fwname), "sfi"); + if (ver->img_type == BTINTEL_IMG_OP) { + /* Controller running OP image. In case of FW downgrade, + * FWID TLV may not be present and driver may attempt to load + * firmware image which doesn't exist. Lets compare the version + * of IML image + */ + if ((ver->cnvi_top & 0xfff) >= BTINTEL_CNVI_BLAZARI) + btintel_get_iml_tlv(ver, fwname, sizeof(fwname), "sfi"); + else + btintel_get_fw_name_tlv(ver, fwname, sizeof(fwname), "sfi"); + } else { + btintel_get_fw_name_tlv(ver, fwname, sizeof(fwname), "sfi"); + } + err = firmware_request_nowarn(&fw, fwname, &hdev->dev); if (err < 0) { if (!btintel_test_flag(hdev, INTEL_BOOTLOADER)) { diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h index 9dbad1a7c47c..aa70e4c27416 100644 --- a/drivers/bluetooth/btintel.h +++ b/drivers/bluetooth/btintel.h @@ -42,7 +42,8 @@ enum { INTEL_TLV_SBE_TYPE, INTEL_TLV_OTP_BDADDR, INTEL_TLV_UNLOCKED_STATE, - INTEL_TLV_GIT_SHA1 + INTEL_TLV_GIT_SHA1, + INTEL_TLV_FW_ID = 0x50 }; struct intel_tlv { @@ -57,6 +58,8 @@ struct intel_tlv { #define BTINTEL_IMG_IML 0x02 /* Intermediate image */ #define BTINTEL_IMG_OP 0x03 /* Operational image */ +#define BTINTEL_FWID_MAXLEN 64 + struct intel_version_tlv { u32 cnvi_top; u32 cnvr_top; @@ -77,6 +80,7 @@ struct intel_version_tlv { u8 limited_cce; u8 sbe_type; u32 git_sha1; + u8 fw_id[BTINTEL_FWID_MAXLEN]; bdaddr_t otp_bd_addr; }; |