Since we can't steer multicast register reads during ring-based workaround verification, we need to define the multicast ranges where failure to steer could potentially cause us to read back from a fused-off register instance.
As with gen12, we can ignore the multicast ranges that the bspec describes as 'SQIDI' since all instances of those registers will always be present and we'll always be able to read back a workaround value that was written with multicast.
Bspec: 66534 Cc: José Roberto de Souza jose.souza@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index d9a5a445ceec..20c6ca28e407 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -2089,12 +2089,30 @@ static const struct mcr_range mcr_ranges_gen12[] = { {}, };
+static const struct mcr_range mcr_ranges_xehp[] = { + { .start = 0x4000, .end = 0x4aff }, + { .start = 0x5200, .end = 0x52ff }, + { .start = 0x5400, .end = 0x7fff }, + { .start = 0x8140, .end = 0x815f }, + { .start = 0x8c80, .end = 0x8dff }, + { .start = 0x94d0, .end = 0x955f }, + { .start = 0x9680, .end = 0x96ff }, + { .start = 0xb000, .end = 0xb3ff }, + { .start = 0xc800, .end = 0xcfff }, + { .start = 0xd800, .end = 0xd8ff }, + { .start = 0xdc00, .end = 0xffff }, + { .start = 0x17000, .end = 0x17fff }, + { .start = 0x24a00, .end = 0x24a7f }, +}; + static bool mcr_range(struct drm_i915_private *i915, u32 offset) { const struct mcr_range *mcr_ranges; int i;
- if (GRAPHICS_VER(i915) >= 12) + if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) + mcr_ranges = mcr_ranges_xehp; + else if (GRAPHICS_VER(i915) >= 12) mcr_ranges = mcr_ranges_gen12; else if (GRAPHICS_VER(i915) >= 8) mcr_ranges = mcr_ranges_gen8;