On 12/8/21 13:59, Matthew Auld wrote:
On Wed, 8 Dec 2021 at 12:43, Thomas Hellström (Intel)
<thomas_os@xxxxxxxxxxxx> wrote:
Hi,
On 12/7/21 17:51, Ramalingam C wrote:
From: Stuart Summers <stuart.summers@xxxxxxxxx>
Add a new platform flag, has_64k_pages, for platforms supporting
base page sizes of 64k.
Signed-off-by: Stuart Summers <stuart.summers@xxxxxxxxx>
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 2 ++
drivers/gpu/drm/i915/i915_pci.c | 2 ++
drivers/gpu/drm/i915/intel_device_info.h | 1 +
3 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 85bb8d3107f0..6132163e1cb3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1528,6 +1528,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define HAS_MSLICES(dev_priv) \
(INTEL_INFO(dev_priv)->has_mslices)
+#define HAS_64K_PAGES(dev_priv) (INTEL_INFO(dev_priv)->has_64k_pages)
+
Could we please have some documentation of the exact meaning of this flag.
Like, smallest page size of LMEM is 64K. Hardware supports 64k pages etc?
Something like: "Set if the device requires 64K GTT page sizes or
larger for device local memory access. Also implies that we require or
at least support the compact PT layout for the ppGTT when using 64K
GTT pages."
Sounds great.
Thanks,
Thomas
