From 356c484822e6ac97dad6947c083fc45d07332c7c Mon Sep 17 00:00:00 2001 From: Michal Wajdeczko Date: Fri, 16 Aug 2019 20:56:58 +0000 Subject: [PATCH] drm/i915/uc: Add explicit DISABLED state for firmware We really need to have separate NOT_SUPPORTED state (for lack of hardware support) and DISABLED state (to indicate user decision) as we will have to take special steps even if GuC firmware is now disabled but hardware exists and could have been previously used. v2: fix logic (Chris/CI) v3: use proper check to avoid probe failure (CI) v4: explain status transitions (Chris) Signed-off-by: Michal Wajdeczko Cc: Daniele Ceraolo Spurio Cc: Chris Wilson Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20190816205658.15020-1-michal.wajdeczko@intel.com --- drivers/gpu/drm/i915/gt/uc/intel_guc.h | 7 ++++- drivers/gpu/drm/i915/gt/uc/intel_huc.h | 7 ++++- drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c | 2 +- drivers/gpu/drm/i915/gt/uc/intel_uc.c | 37 ++++++++++++++------------ drivers/gpu/drm/i915/gt/uc/intel_uc.h | 17 +++++++++++- drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 5 ++-- drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h | 43 ++++++++++++++++++++++++++----- drivers/gpu/drm/i915/i915_drv.h | 4 +-- 8 files changed, 91 insertions(+), 31 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h index 4999db9..2b2f046 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h @@ -154,7 +154,12 @@ struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size); static inline bool intel_guc_is_supported(struct intel_guc *guc) { - return intel_uc_fw_supported(&guc->fw); + return intel_uc_fw_is_supported(&guc->fw); +} + +static inline bool intel_guc_is_enabled(struct intel_guc *guc) +{ + return intel_uc_fw_is_enabled(&guc->fw); } static inline bool intel_guc_is_running(struct intel_guc *guc) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.h b/drivers/gpu/drm/i915/gt/uc/intel_huc.h index f8a4557..644c059 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_huc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.h @@ -38,7 +38,12 @@ static inline int intel_huc_sanitize(struct intel_huc *huc) static inline bool intel_huc_is_supported(struct intel_huc *huc) { - return intel_uc_fw_supported(&huc->fw); + return intel_uc_fw_is_supported(&huc->fw); +} + +static inline bool intel_huc_is_enabled(struct intel_huc *huc) +{ + return intel_uc_fw_is_enabled(&huc->fw); } static inline bool intel_huc_is_authenticated(struct intel_huc *huc) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c index 96feca9..7460248 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c @@ -35,7 +35,7 @@ void intel_huc_fw_init_early(struct intel_huc *huc) struct drm_i915_private *i915 = gt->i915; intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC, - intel_uc_supports_guc(uc), + intel_uc_uses_guc(uc), INTEL_INFO(i915)->platform, INTEL_REVID(i915)); } diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c index 0dc2b0c..449c432 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c @@ -45,17 +45,17 @@ static void __confirm_options(struct intel_uc *uc) DRM_DEV_DEBUG_DRIVER(i915->drm.dev, "enable_guc=%d (guc:%s submission:%s huc:%s)\n", i915_modparams.enable_guc, - yesno(intel_uc_supports_guc(uc)), - yesno(intel_uc_supports_guc_submission(uc)), - yesno(intel_uc_supports_huc(uc))); + yesno(intel_uc_uses_guc(uc)), + yesno(intel_uc_uses_guc_submission(uc)), + yesno(intel_uc_uses_huc(uc))); if (i915_modparams.enable_guc == -1) return; if (i915_modparams.enable_guc == 0) { - GEM_BUG_ON(intel_uc_supports_guc(uc)); - GEM_BUG_ON(intel_uc_supports_guc_submission(uc)); - GEM_BUG_ON(intel_uc_supports_huc(uc)); + GEM_BUG_ON(intel_uc_uses_guc(uc)); + GEM_BUG_ON(intel_uc_uses_guc_submission(uc)); + GEM_BUG_ON(intel_uc_uses_huc(uc)); return; } @@ -266,23 +266,23 @@ void intel_uc_fetch_firmwares(struct intel_uc *uc) struct drm_i915_private *i915 = uc_to_gt(uc)->i915; int err; - if (!intel_uc_supports_guc(uc)) + if (!intel_uc_uses_guc(uc)) return; err = intel_uc_fw_fetch(&uc->guc.fw, i915); if (err) return; - if (intel_uc_supports_huc(uc)) + if (intel_uc_uses_huc(uc)) intel_uc_fw_fetch(&uc->huc.fw, i915); } void intel_uc_cleanup_firmwares(struct intel_uc *uc) { - if (!intel_uc_supports_guc(uc)) + if (!intel_uc_uses_guc(uc)) return; - if (intel_uc_supports_huc(uc)) + if (intel_uc_uses_huc(uc)) intel_uc_fw_cleanup_fetch(&uc->huc.fw); intel_uc_fw_cleanup_fetch(&uc->guc.fw); @@ -294,7 +294,7 @@ int intel_uc_init(struct intel_uc *uc) struct intel_huc *huc = &uc->huc; int ret; - if (!intel_uc_supports_guc(uc)) + if (!intel_uc_uses_guc(uc)) return 0; /* XXX: GuC submission is unavailable for now */ @@ -304,7 +304,7 @@ int intel_uc_init(struct intel_uc *uc) if (ret) return ret; - if (intel_uc_supports_huc(uc)) { + if (intel_uc_uses_huc(uc)) { ret = intel_huc_init(huc); if (ret) goto out_huc; @@ -321,10 +321,10 @@ void intel_uc_fini(struct intel_uc *uc) { struct intel_guc *guc = &uc->guc; - if (!intel_uc_supports_guc(uc)) + if (!intel_uc_uses_guc(uc)) return; - if (intel_uc_supports_huc(uc)) + if (intel_uc_uses_huc(uc)) intel_huc_fini(&uc->huc); intel_guc_fini(guc); @@ -360,7 +360,7 @@ static int uc_init_wopcm(struct intel_uc *uc) struct intel_uncore *uncore = gt->uncore; u32 base = intel_wopcm_guc_base(>->i915->wopcm); u32 size = intel_wopcm_guc_size(>->i915->wopcm); - u32 huc_agent = intel_uc_supports_huc(uc) ? HUC_LOADING_AGENT_GUC : 0; + u32 huc_agent = intel_uc_uses_huc(uc) ? HUC_LOADING_AGENT_GUC : 0; u32 mask; int err; @@ -417,6 +417,9 @@ int intel_uc_init_hw(struct intel_uc *uc) if (!intel_uc_supports_guc(uc)) return 0; + if (!intel_uc_uses_guc(uc)) + return 0; + if (!intel_uc_fw_is_available(&guc->fw)) { ret = intel_uc_fw_status_to_error(guc->fw.status); goto err_out; @@ -444,7 +447,7 @@ int intel_uc_init_hw(struct intel_uc *uc) if (ret) goto err_out; - if (intel_uc_supports_huc(uc)) { + if (intel_uc_uses_huc(uc)) { ret = intel_huc_fw_upload(huc); if (ret && intel_uc_fw_is_overridden(&huc->fw)) goto err_out; @@ -490,7 +493,7 @@ int intel_uc_init_hw(struct intel_uc *uc) "submission", enableddisabled(intel_uc_supports_guc_submission(uc))); - if (intel_uc_supports_huc(uc)) { + if (intel_uc_uses_huc(uc)) { dev_info(i915->drm.dev, "%s firmware %s version %u.%u %s:%s\n", intel_uc_fw_type_repr(INTEL_UC_FW_TYPE_HUC), huc->fw.path, diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.h b/drivers/gpu/drm/i915/gt/uc/intel_uc.h index bfb6f97..1b9404a 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.h @@ -39,14 +39,29 @@ static inline bool intel_uc_supports_guc(struct intel_uc *uc) return intel_guc_is_supported(&uc->guc); } +static inline bool intel_uc_uses_guc(struct intel_uc *uc) +{ + return intel_guc_is_enabled(&uc->guc); +} + static inline bool intel_uc_supports_guc_submission(struct intel_uc *uc) { return intel_guc_is_submission_supported(&uc->guc); } +static inline bool intel_uc_uses_guc_submission(struct intel_uc *uc) +{ + return intel_guc_is_submission_supported(&uc->guc); +} + static inline bool intel_uc_supports_huc(struct intel_uc *uc) { - return intel_huc_is_supported(&uc->huc); + return intel_uc_supports_guc(uc); +} + +static inline bool intel_uc_uses_huc(struct intel_uc *uc) +{ + return intel_huc_is_enabled(&uc->huc); } #endif diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c index f4a34ea..890ae6b 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c @@ -206,8 +206,9 @@ void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw, __uc_fw_user_override(uc_fw); } - intel_uc_fw_change_status(uc_fw, uc_fw->path && *uc_fw->path ? + intel_uc_fw_change_status(uc_fw, uc_fw->path ? *uc_fw->path ? INTEL_UC_FIRMWARE_SELECTED : + INTEL_UC_FIRMWARE_DISABLED : INTEL_UC_FIRMWARE_NOT_SUPPORTED); } @@ -266,7 +267,7 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw, struct drm_i915_private *i915) int err; GEM_BUG_ON(!i915->wopcm.size); - GEM_BUG_ON(!intel_uc_fw_supported(uc_fw)); + GEM_BUG_ON(!intel_uc_fw_is_enabled(uc_fw)); err = i915_inject_load_error(i915, -ENXIO); if (err) diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h index 6fa5027..bacee0d 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h @@ -18,9 +18,30 @@ struct intel_gt; /* Home of GuC, HuC and DMC firmwares */ #define INTEL_UC_FIRMWARE_URL "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915" +/* + * +------------+---------------------------------------------------+ + * | PHASE | FIRMWARE STATUS TRANSITIONS | + * +============+===================================================+ + * | | UNINITIALIZED | + * +------------+- / | \ -+ + * | | DISABLED <--/ | \--> NOT_SUPPORTED | + * | init_early | V | + * | | SELECTED | + * +------------+- / | \ -+ + * | | MISSING <--/ | \--> ERROR | + * | fetch | | | + * | | /------> AVAILABLE <---<-----------\ | + * +------------+- \ / \ \ \ -+ + * | | FAIL <--< \--> TRANSFERRED \ | + * | upload | \ / \ / | + * | | \---------/ \--> RUNNING | + * +------------+---------------------------------------------------+ + */ + enum intel_uc_fw_status { - INTEL_UC_FIRMWARE_NOT_SUPPORTED = -1, /* no uc HW or disabled */ + INTEL_UC_FIRMWARE_NOT_SUPPORTED = -1, /* no uc HW */ INTEL_UC_FIRMWARE_UNINITIALIZED = 0, /* used to catch checks done too early */ + INTEL_UC_FIRMWARE_DISABLED, /* disabled */ INTEL_UC_FIRMWARE_SELECTED, /* selected the blob we want to load */ INTEL_UC_FIRMWARE_MISSING, /* blob not found on the system */ INTEL_UC_FIRMWARE_ERROR, /* invalid format or version */ @@ -84,6 +105,8 @@ const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status) return "N/A"; case INTEL_UC_FIRMWARE_UNINITIALIZED: return "UNINITIALIZED"; + case INTEL_UC_FIRMWARE_DISABLED: + return "DISABLED"; case INTEL_UC_FIRMWARE_SELECTED: return "SELECTED"; case INTEL_UC_FIRMWARE_MISSING: @@ -106,7 +129,10 @@ static inline int intel_uc_fw_status_to_error(enum intel_uc_fw_status status) { switch (status) { case INTEL_UC_FIRMWARE_NOT_SUPPORTED: + return -ENODEV; case INTEL_UC_FIRMWARE_UNINITIALIZED: + return -EACCES; + case INTEL_UC_FIRMWARE_DISABLED: return -EPERM; case INTEL_UC_FIRMWARE_MISSING: return -ENOENT; @@ -142,6 +168,16 @@ __intel_uc_fw_status(struct intel_uc_fw *uc_fw) return uc_fw->status; } +static inline bool intel_uc_fw_is_supported(struct intel_uc_fw *uc_fw) +{ + return __intel_uc_fw_status(uc_fw) != INTEL_UC_FIRMWARE_NOT_SUPPORTED; +} + +static inline bool intel_uc_fw_is_enabled(struct intel_uc_fw *uc_fw) +{ + return __intel_uc_fw_status(uc_fw) > INTEL_UC_FIRMWARE_DISABLED; +} + static inline bool intel_uc_fw_is_available(struct intel_uc_fw *uc_fw) { return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_AVAILABLE; @@ -157,11 +193,6 @@ static inline bool intel_uc_fw_is_running(struct intel_uc_fw *uc_fw) return __intel_uc_fw_status(uc_fw) == INTEL_UC_FIRMWARE_RUNNING; } -static inline bool intel_uc_fw_supported(struct intel_uc_fw *uc_fw) -{ - return __intel_uc_fw_status(uc_fw) != INTEL_UC_FIRMWARE_NOT_SUPPORTED; -} - static inline bool intel_uc_fw_is_overridden(const struct intel_uc_fw *uc_fw) { return uc_fw->user_overridden; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index e477889..1031fc1 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2215,8 +2215,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915, #define HAS_GT_UC(dev_priv) (INTEL_INFO(dev_priv)->has_gt_uc) /* Having GuC is not the same as using GuC */ -#define USES_GUC(dev_priv) intel_uc_supports_guc(&(dev_priv)->gt.uc) -#define USES_GUC_SUBMISSION(dev_priv) intel_uc_supports_guc_submission(&(dev_priv)->gt.uc) +#define USES_GUC(dev_priv) intel_uc_uses_guc(&(dev_priv)->gt.uc) +#define USES_GUC_SUBMISSION(dev_priv) intel_uc_uses_guc_submission(&(dev_priv)->gt.uc) #define HAS_POOLED_EU(dev_priv) (INTEL_INFO(dev_priv)->has_pooled_eu) -- 2.7.4