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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:03 +0000 |
commit | 01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch) | |
tree | b406c5242a088c4f59c6e4b719b783f43aca6ae9 /drivers/gpu/drm/i915/gem/i915_gem_stolen.c | |
parent | Adding upstream version 6.7.12. (diff) | |
download | linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.tar.xz linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.zip |
Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_stolen.c')
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c index 1a766d8e7c..8c88075eea 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c @@ -386,6 +386,27 @@ static void icl_get_stolen_reserved(struct drm_i915_private *i915, drm_dbg(&i915->drm, "GEN6_STOLEN_RESERVED = 0x%016llx\n", reg_val); + /* Wa_14019821291 */ + if (MEDIA_VER_FULL(i915) == IP_VER(13, 0)) { + /* + * This workaround is primarily implemented by the BIOS. We + * just need to figure out whether the BIOS has applied the + * workaround (meaning the programmed address falls within + * the DSM) and, if so, reserve that part of the DSM to + * prevent accidental reuse. The DSM location should be just + * below the WOPCM. + */ + u64 gscpsmi_base = intel_uncore_read64_2x32(uncore, + MTL_GSCPSMI_BASEADDR_LSB, + MTL_GSCPSMI_BASEADDR_MSB); + if (gscpsmi_base >= i915->dsm.stolen.start && + gscpsmi_base < i915->dsm.stolen.end) { + *base = gscpsmi_base; + *size = i915->dsm.stolen.end - gscpsmi_base; + return; + } + } + switch (reg_val & GEN8_STOLEN_RESERVED_SIZE_MASK) { case GEN8_STOLEN_RESERVED_1M: *size = 1024 * 1024; |