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drm/i915/xehp: Check for faults on primary GAM

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On Xe_HP the fault registers are now in a multicast register range.
However as part of the GAM these registers follow special rules and we
need only read from the "primary" GAM's instance to get the information
we need.  So a single intel_gt_mcr_read_any() (which will automatically
steer to the primary GAM) is sufficient; we don't need to loop over each
instance of the MCR register.

v2:
 - Update more instances of fault registers.  (Bala)

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221014230239.1023689-7-matthew.d.roper@intel.com
This commit is contained in:
Matt Roper
2022-10-14 16:02:31 -07:00
parent 851435ec36
commit ab1b2d40d6
2 changed files with 55 additions and 9 deletions
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12
drivers/gpu/drm/i915/i915_gpu_error.c
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@@ -1221,7 +1221,10 @@ static void engine_record_registers(struct intel_engine_coredump *ee)
if (GRAPHICS_VER(i915) >= 6) {
ee->rc_psmi = ENGINE_READ(engine, RING_PSMI_CTL);
if (GRAPHICS_VER(i915) >= 12)
if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50))
ee->fault_reg = intel_gt_mcr_read_any(engine->gt,
XEHP_RING_FAULT_REG);
else if (GRAPHICS_VER(i915) >= 12)
ee->fault_reg = intel_uncore_read(engine->uncore,
GEN12_RING_FAULT_REG);
else if (GRAPHICS_VER(i915) >= 8)
@@ -1820,7 +1823,12 @@ static void gt_record_global_regs(struct intel_gt_coredump *gt)
if (GRAPHICS_VER(i915) == 7)
gt->err_int = intel_uncore_read(uncore, GEN7_ERR_INT);
if (GRAPHICS_VER(i915) >= 12) {
if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) {
gt->fault_data0 = intel_gt_mcr_read_any((struct intel_gt *)gt->_gt,
XEHP_FAULT_TLB_DATA0);
gt->fault_data1 = intel_gt_mcr_read_any((struct intel_gt *)gt->_gt,
XEHP_FAULT_TLB_DATA1);
} else if (GRAPHICS_VER(i915) >= 12) {
gt->fault_data0 = intel_uncore_read(uncore,
GEN12_FAULT_TLB_DATA0);
gt->fault_data1 = intel_uncore_read(uncore,