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drm/i915: Increase FLR timeout from 3s to 9s

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Following the guidelines it takes 3 seconds to perform an FLR
reset. Let's give it a bit more slack because this time can
change depending on the platform and on the firmware

Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240523235853.171796-1-andi.shyti@linux.intel.com
This commit is contained in:
Andi Shyti 2024-05-24 01:58:53 +02:00
parent a09d2327a9
commit c5d86c1908
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/i915/intel_uncore.c
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@ -2614,11 +2614,18 @@ void intel_uncore_prune_engine_fw_domains(struct intel_uncore *uncore,
static void driver_initiated_flr(struct intel_uncore *uncore)
{
struct drm_i915_private *i915 = uncore->i915;
const unsigned int flr_timeout_ms = 3000; /* specs recommend a 3s wait */
unsigned int flr_timeout_ms;
int ret;
drm_dbg(&i915->drm, "Triggering Driver-FLR\n");
/*
* The specification recommends a 3 seconds FLR reset timeout. To be
* cautious, we will extend this to 9 seconds, three times the specified
* timeout.
*/
flr_timeout_ms = 9000;
/*
* Make sure any pending FLR requests have cleared by waiting for the
* FLR trigger bit to go to zero. Also clear GU_DEBUG's DRIVERFLR_STATUS