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| author | Alan Previn <alan.previn.teres.alexis@intel.com> | 2023-06-09 02:07:16 +0300 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2023-06-20 10:54:36 +0300 |
| commit | 21f773515902d8b303df650674ad1c5243beb245 (patch) | |
| tree | 1edb9acb95db9067a4a2795a8a789aa4f7d8c617 /drivers/gpu/drm/i915 | |
| parent | 2222dcb0775d36de28992f56455ab3967b30d380 (diff) | |
| download | linux-21f773515902d8b303df650674ad1c5243beb245.tar.xz | |
drm/i915/gsc: take a wakeref for the proxy-init-completion check
Ensure intel_gsc_uc_fw_init_done and intel_gsc_uc_fw_proxy_init
takes a wakeref before reading GSC Shim registers.
NOTE: another patch in review also adds a call from selftest to
this same function. (https://patchwork.freedesktop.org/series/117713/)
which is why i am adding the wakeref inside the callee, not the
caller.
v2: - add a helper, 'gsc_uc_get_fw_status' for both callers
(Daniele Ceraolo)
Fixes: 99afb7cc8c44 ("drm/i915/pxp: Add ARB session creation and cleanup")
Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230608230716.3079594-1-alan.previn.teres.alexis@intel.com
(cherry picked from commit 8c33c3755b75c98d8eb490df345b4187a295a1a8)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c index f46eb17a7a98..60e9c6c9e775 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_fw.c @@ -24,21 +24,27 @@ static bool gsc_is_in_reset(struct intel_uncore *uncore) GSC_FW_CURRENT_STATE_RESET; } -bool intel_gsc_uc_fw_proxy_init_done(struct intel_gsc_uc *gsc) +static u32 gsc_uc_get_fw_status(struct intel_uncore *uncore) { - struct intel_uncore *uncore = gsc_uc_to_gt(gsc)->uncore; - u32 fw_status = intel_uncore_read(uncore, GSC_FW_STATUS_REG); + intel_wakeref_t wakeref; + u32 fw_status = 0; - return REG_FIELD_GET(GSC_FW_CURRENT_STATE, fw_status) == + with_intel_runtime_pm(uncore->rpm, wakeref) + fw_status = intel_uncore_read(uncore, GSC_FW_STATUS_REG); + + return fw_status; +} + +bool intel_gsc_uc_fw_proxy_init_done(struct intel_gsc_uc *gsc) +{ + return REG_FIELD_GET(GSC_FW_CURRENT_STATE, + gsc_uc_get_fw_status(gsc_uc_to_gt(gsc)->uncore)) == GSC_FW_PROXY_STATE_NORMAL; } bool intel_gsc_uc_fw_init_done(struct intel_gsc_uc *gsc) { - struct intel_uncore *uncore = gsc_uc_to_gt(gsc)->uncore; - u32 fw_status = intel_uncore_read(uncore, GSC_FW_STATUS_REG); - - return fw_status & GSC_FW_INIT_COMPLETE_BIT; + return gsc_uc_get_fw_status(gsc_uc_to_gt(gsc)->uncore) & GSC_FW_INIT_COMPLETE_BIT; } static int emit_gsc_fw_load(struct i915_request *rq, struct intel_gsc_uc *gsc) |