drm/i915/guc: Improve GuC loading status check/error reports
authorJohn Harrison <John.C.Harrison@Intel.com>
Fri, 7 Jan 2022 00:06:22 +0000 (16:06 -0800)
committerJohn Harrison <John.C.Harrison@Intel.com>
Tue, 11 Jan 2022 19:47:43 +0000 (11:47 -0800)
If the GuC fails to load, it is useful to know what firmware file /
version was attempted. So move the version info report to before the
load attempt rather than only after a successful load.

If the GuC does fail to load, then make the error messages visible
rather than being 'debug' prints that do not appears in dmesg output
by default.

When waiting for the GuC to load, it used to be necessary to check for
two different states - READY and (LAPIC_DONE | MIA_CORE). Apparently
the second signified init complete on RC6 exit. However, in more
recent GuC versions the RC6 exit sequence now finishes with status
READY as well. So the test can be simplified.

Also, add an enum giving all the current status codes that GuC loading
can report as a reference without having to pull and search through
the GuC source files.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220107000622.292081-4-John.C.Harrison@Intel.com
drivers/gpu/drm/i915/gt/uc/abi/guc_errors_abi.h
drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
drivers/gpu/drm/i915/gt/uc/intel_guc_reg.h
drivers/gpu/drm/i915/gt/uc/intel_huc.c
drivers/gpu/drm/i915/gt/uc/intel_uc.c

index 488b6061ee8939048efca960c40796cf4c68e24c..c20658ee85a51937c96f3d096bae87b18ce9d998 100644 (file)
@@ -11,4 +11,27 @@ enum intel_guc_response_status {
        INTEL_GUC_RESPONSE_STATUS_GENERIC_FAIL = 0xF000,
 };
 
+enum intel_guc_load_status {
+       INTEL_GUC_LOAD_STATUS_DEFAULT                          = 0x00,
+       INTEL_GUC_LOAD_STATUS_START                            = 0x01,
+       INTEL_GUC_LOAD_STATUS_ERROR_DEVID_BUILD_MISMATCH       = 0x02,
+       INTEL_GUC_LOAD_STATUS_GUC_PREPROD_BUILD_MISMATCH       = 0x03,
+       INTEL_GUC_LOAD_STATUS_ERROR_DEVID_INVALID_GUCTYPE      = 0x04,
+       INTEL_GUC_LOAD_STATUS_GDT_DONE                         = 0x10,
+       INTEL_GUC_LOAD_STATUS_IDT_DONE                         = 0x20,
+       INTEL_GUC_LOAD_STATUS_LAPIC_DONE                       = 0x30,
+       INTEL_GUC_LOAD_STATUS_GUCINT_DONE                      = 0x40,
+       INTEL_GUC_LOAD_STATUS_DPC_READY                        = 0x50,
+       INTEL_GUC_LOAD_STATUS_DPC_ERROR                        = 0x60,
+       INTEL_GUC_LOAD_STATUS_EXCEPTION                        = 0x70,
+       INTEL_GUC_LOAD_STATUS_INIT_DATA_INVALID                = 0x71,
+       INTEL_GUC_LOAD_STATUS_PXP_TEARDOWN_CTRL_ENABLED        = 0x72,
+       INTEL_GUC_LOAD_STATUS_INVALID_INIT_DATA_RANGE_START,
+       INTEL_GUC_LOAD_STATUS_MPU_DATA_INVALID                 = 0x73,
+       INTEL_GUC_LOAD_STATUS_INIT_MMIO_SAVE_RESTORE_INVALID   = 0x74,
+       INTEL_GUC_LOAD_STATUS_INVALID_INIT_DATA_RANGE_END,
+
+       INTEL_GUC_LOAD_STATUS_READY                            = 0xF0,
+};
+
 #endif /* _ABI_GUC_ERRORS_ABI_H */
index d09c205b2beb3cdda06eb79bd964c2dacc317bb1..f773e7f35bc1a8046ef1358bee179fa4820ddf2b 100644 (file)
@@ -90,11 +90,10 @@ static int guc_xfer_rsa(struct intel_uc_fw *guc_fw,
 static inline bool guc_ready(struct intel_uncore *uncore, u32 *status)
 {
        u32 val = intel_uncore_read(uncore, GUC_STATUS);
-       u32 uk_val = val & GS_UKERNEL_MASK;
+       u32 uk_val = REG_FIELD_GET(GS_UKERNEL_MASK, val);
 
        *status = val;
-       return (uk_val == GS_UKERNEL_READY) ||
-               ((val & GS_MIA_CORE_STATE) && (uk_val == GS_UKERNEL_LAPIC_DONE));
+       return uk_val == INTEL_GUC_LOAD_STATUS_READY;
 }
 
 static int guc_wait_ucode(struct intel_uncore *uncore)
@@ -123,8 +122,8 @@ static int guc_wait_ucode(struct intel_uncore *uncore)
        if (ret) {
                struct drm_device *drm = &uncore->i915->drm;
 
-               drm_dbg(drm, "GuC load failed: status = 0x%08X\n", status);
-               drm_dbg(drm, "GuC load failed: status: Reset = %d, "
+               drm_info(drm, "GuC load failed: status = 0x%08X\n", status);
+               drm_info(drm, "GuC load failed: status: Reset = %d, "
                        "BootROM = 0x%02X, UKernel = 0x%02X, "
                        "MIA = 0x%02X, Auth = 0x%02X\n",
                        REG_FIELD_GET(GS_MIA_IN_RESET, status),
@@ -134,13 +133,13 @@ static int guc_wait_ucode(struct intel_uncore *uncore)
                        REG_FIELD_GET(GS_AUTH_STATUS_MASK, status));
 
                if ((status & GS_BOOTROM_MASK) == GS_BOOTROM_RSA_FAILED) {
-                       drm_dbg(drm, "GuC firmware signature verification failed\n");
+                       drm_info(drm, "GuC firmware signature verification failed\n");
                        ret = -ENOEXEC;
                }
 
-               if ((status & GS_UKERNEL_MASK) == GS_UKERNEL_EXCEPTION) {
-                       drm_dbg(drm, "GuC firmware exception. EIP: %#x\n",
-                               intel_uncore_read(uncore, SOFT_SCRATCH(13)));
+               if (REG_FIELD_GET(GS_UKERNEL_MASK, status) == INTEL_GUC_LOAD_STATUS_EXCEPTION) {
+                       drm_info(drm, "GuC firmware exception. EIP: %#x\n",
+                                intel_uncore_read(uncore, SOFT_SCRATCH(13)));
                        ret = -ENXIO;
                }
        }
index b37fc2ffaef25e9797b9d690884ee1de85de7902..e6bd66d6ce5a0995b03304fa12509517303f791d 100644 (file)
 #define   GS_BOOTROM_JUMP_PASSED         (0x76 << GS_BOOTROM_SHIFT)
 #define   GS_UKERNEL_SHIFT             8
 #define   GS_UKERNEL_MASK                (0xFF << GS_UKERNEL_SHIFT)
-#define   GS_UKERNEL_LAPIC_DONE                  (0x30 << GS_UKERNEL_SHIFT)
-#define   GS_UKERNEL_DPC_ERROR           (0x60 << GS_UKERNEL_SHIFT)
-#define   GS_UKERNEL_EXCEPTION           (0x70 << GS_UKERNEL_SHIFT)
-#define   GS_UKERNEL_READY               (0xF0 << GS_UKERNEL_SHIFT)
 #define   GS_MIA_SHIFT                 16
 #define   GS_MIA_MASK                    (0x07 << GS_MIA_SHIFT)
 #define   GS_MIA_CORE_STATE              (0x01 << GS_MIA_SHIFT)
index d10b227ac4aa0347f2963c5f9434be9cccab732f..556829de9c17287dc8f2ee598627fed91caf123d 100644 (file)
@@ -124,6 +124,7 @@ int intel_huc_auth(struct intel_huc *huc)
        }
 
        intel_uc_fw_change_status(&huc->fw, INTEL_UC_FIRMWARE_RUNNING);
+       drm_info(&gt->i915->drm, "HuC authenticated\n");
        return 0;
 
 fail:
index 3693c4e7dad059db7027392d325fcf19757f3adb..8a188232b6aaead1830410d4e9fba0b8b204455f 100644 (file)
@@ -432,6 +432,15 @@ static int __uc_check_hw(struct intel_uc *uc)
        return 0;
 }
 
+static void print_fw_ver(struct intel_uc *uc, struct intel_uc_fw *fw)
+{
+       struct drm_i915_private *i915 = uc_to_gt(uc)->i915;
+
+       drm_info(&i915->drm, "%s firmware %s version %u.%u\n",
+                intel_uc_fw_type_repr(fw->type), fw->path,
+                fw->major_ver_found, fw->minor_ver_found);
+}
+
 static int __uc_init_hw(struct intel_uc *uc)
 {
        struct drm_i915_private *i915 = uc_to_gt(uc)->i915;
@@ -442,6 +451,11 @@ static int __uc_init_hw(struct intel_uc *uc)
        GEM_BUG_ON(!intel_uc_supports_guc(uc));
        GEM_BUG_ON(!intel_uc_wants_guc(uc));
 
+       print_fw_ver(uc, &guc->fw);
+
+       if (intel_uc_uses_huc(uc))
+               print_fw_ver(uc, &huc->fw);
+
        if (!intel_uc_fw_is_loadable(&guc->fw)) {
                ret = __uc_check_hw(uc) ||
                      intel_uc_fw_is_overridden(&guc->fw) ||
@@ -507,24 +521,11 @@ static int __uc_init_hw(struct intel_uc *uc)
                intel_rps_lower_unslice(&uc_to_gt(uc)->rps);
        }
 
-       drm_info(&i915->drm, "%s firmware %s version %u.%u %s:%s\n",
-                intel_uc_fw_type_repr(INTEL_UC_FW_TYPE_GUC), guc->fw.path,
-                guc->fw.major_ver_found, guc->fw.minor_ver_found,
-                "submission",
+       drm_info(&i915->drm, "GuC submission %s\n",
                 enableddisabled(intel_uc_uses_guc_submission(uc)));
-
-       drm_info(&i915->drm, "GuC SLPC: %s\n",
+       drm_info(&i915->drm, "GuC SLPC %s\n",
                 enableddisabled(intel_uc_uses_guc_slpc(uc)));
 
-       if (intel_uc_uses_huc(uc)) {
-               drm_info(&i915->drm, "%s firmware %s version %u.%u %s:%s\n",
-                        intel_uc_fw_type_repr(INTEL_UC_FW_TYPE_HUC),
-                        huc->fw.path,
-                        huc->fw.major_ver_found, huc->fw.minor_ver_found,
-                        "authenticated",
-                        yesno(intel_huc_is_authenticated(huc)));
-       }
-
        return 0;
 
        /*