On Wed, Sep 21, 2022 at 12:00:38PM +0530, Iddamsetty, Aravind wrote:
replying here for earlier comments too.
On 21-09-2022 01:35, Lucas De Marchi wrote:
On Tue, Sep 20, 2022 at 01:31:49AM -0700, Lucas De Marchi wrote:
On Tue, Sep 20, 2022 at 12:49:40PM +0530, Aravind Iddamsetty wrote:
As an integrated GPU, MTL does not have local memory and
HAS_LMEM() returns false. However the platform's stolen memory
is presented via BAR2 (i.e., the BAR we traditionally consider
to be the LMEM BAR) and should be managed by the driver the same
way that local memory is on dgpu platforms (which includes
setting the "lmem" bit on page table entries). We use the term
"local stolen memory" to refer to this model.
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Signed-off-by: CQ Tang <cq.tang@xxxxxxxxx>
Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@xxxxxxxxx>
Original-author: CQ Tang
---
drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 113 +++++++++++++++++----
drivers/gpu/drm/i915/gt/intel_ggtt.c | 2 +-
drivers/gpu/drm/i915/i915_drv.h | 3 +
3 files changed, 100 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index acc561c0f0aa..bad5250fb764 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -77,6 +77,19 @@ void i915_gem_stolen_remove_node(struct
drm_i915_private *i915,
mutex_unlock(&i915->mm.stolen_lock);
}
+static bool is_dsm_invalid(struct drm_i915_private *i915, struct
resource *dsm)
+{
+ if (!HAS_BAR2_SMEM_STOLEN(i915)) {
I called a similar function as is_dsm_valid() in
https://patchwork.freedesktop.org/series/108620/
sounds weird with "invalid" and the double negation on return early
style.
sure, will change it hope i can use that from your patch.
that patch is now pushed, so now you can reuse it.
Lucas De Marchi
