[Intel-xe] [PATCH 8/9] drm/xe: Use vfunc for ggtt pte encoding
Lucas De Marchi
lucas.demarchi at intel.com
Mon Sep 25 22:10:48 UTC 2023
Use 2 different functions for encoding the ggtt's pte, assigning them
during initialization. Main difference is that before Xe-LPG, the pte
didn't have the cache bits.
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
drivers/gpu/drm/xe/xe_ggtt.c | 53 +++++++++++++++++++++++-------
drivers/gpu/drm/xe/xe_ggtt.h | 1 -
drivers/gpu/drm/xe/xe_ggtt_types.h | 9 +++++
3 files changed, 50 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_ggtt.c b/drivers/gpu/drm/xe/xe_ggtt.c
index 54baaffc7235..09c6bd46f097 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.c
+++ b/drivers/gpu/drm/xe/xe_ggtt.c
@@ -20,16 +20,31 @@
#include "xe_mmio.h"
#include "xe_wopcm.h"
-/* FIXME: Common file, preferably auto-gen */
-#define MTL_GGTT_PTE_PAT0 BIT_ULL(52)
-#define MTL_GGTT_PTE_PAT1 BIT_ULL(53)
+#define XELPG_GGTT_PTE_PAT0 BIT_ULL(52)
+#define XELPG_GGTT_PTE_PAT1 BIT_ULL(53)
/* GuC addresses above GUC_GGTT_TOP also don't map through the GTT */
#define GUC_GGTT_TOP 0xFEE00000
-u64 xe_ggtt_pte_encode(struct xe_bo *bo, u64 bo_offset)
+static u64 xelp_ggtt_pte_encode_bo(struct xe_bo *bo, u64 bo_offset,
+ enum xe_cache_level cache)
+{
+ u64 pte;
+
+ pte = xe_bo_addr(bo, bo_offset, XE_PAGE_SIZE);
+ pte |= XE_PAGE_PRESENT;
+
+ if (xe_bo_is_vram(bo) || xe_bo_is_stolen_devmem(bo))
+ pte |= XE_GGTT_PTE_DM;
+
+ return pte;
+}
+
+static u64 xelpg_ggtt_pte_encode_bo(struct xe_bo *bo, u64 bo_offset,
+ enum xe_cache_level cache)
{
struct xe_device *xe = xe_bo_device(bo);
+ u32 pat_index = xe->pat.idx[cache];
u64 pte;
pte = xe_bo_addr(bo, bo_offset, XE_PAGE_SIZE);
@@ -38,11 +53,11 @@ u64 xe_ggtt_pte_encode(struct xe_bo *bo, u64 bo_offset)
if (xe_bo_is_vram(bo) || xe_bo_is_stolen_devmem(bo))
pte |= XE_GGTT_PTE_DM;
- /* FIXME: vfunc + pass in caching rules */
- if (xe->info.platform == XE_METEORLAKE) {
- pte |= MTL_GGTT_PTE_PAT0;
- pte |= MTL_GGTT_PTE_PAT1;
- }
+ if (pat_index & BIT(0))
+ pte |= XELPG_GGTT_PTE_PAT0;
+
+ if (pat_index & BIT(1))
+ pte |= XELPG_GGTT_PTE_PAT1;
return pte;
}
@@ -72,7 +87,8 @@ static void xe_ggtt_clear(struct xe_ggtt *ggtt, u64 start, u64 size)
xe_tile_assert(ggtt->tile, start < end);
if (ggtt->scratch)
- scratch_pte = xe_ggtt_pte_encode(ggtt->scratch, 0);
+ scratch_pte = ggtt->pt_ops->pte_encode_bo(ggtt->scratch, 0,
+ XE_CACHE_WB);
else
scratch_pte = 0;
@@ -102,6 +118,14 @@ static void primelockdep(struct xe_ggtt *ggtt)
fs_reclaim_release(GFP_KERNEL);
}
+static const struct xe_ggtt_pt_ops xelp_pt_ops = {
+ .pte_encode_bo = xelp_ggtt_pte_encode_bo,
+};
+
+static const struct xe_ggtt_pt_ops xelpg_pt_ops = {
+ .pte_encode_bo = xelpg_ggtt_pte_encode_bo,
+};
+
int xe_ggtt_init_noalloc(struct xe_ggtt *ggtt)
{
struct xe_device *xe = tile_to_xe(ggtt->tile);
@@ -146,6 +170,11 @@ int xe_ggtt_init_noalloc(struct xe_ggtt *ggtt)
if (ggtt->size > GUC_GGTT_TOP)
ggtt->size = GUC_GGTT_TOP;
+ if (GRAPHICS_VERx100(xe) >= 1270)
+ ggtt->pt_ops = &xelpg_pt_ops;
+ else
+ ggtt->pt_ops = &xelp_pt_ops;
+
drm_mm_init(&ggtt->mm, xe_wopcm_size(xe),
ggtt->size - xe_wopcm_size(xe));
mutex_init(&ggtt->lock);
@@ -260,7 +289,7 @@ void xe_ggtt_printk(struct xe_ggtt *ggtt, const char *prefix)
{
u64 addr, scratch_pte;
- scratch_pte = xe_ggtt_pte_encode(ggtt->scratch, 0);
+ scratch_pte = ggtt->pt_ops->pte_encode_bo(ggtt->scratch, 0, XE_CACHE_WB);
printk("%sGlobal GTT:", prefix);
for (addr = 0; addr < ggtt->size; addr += XE_PAGE_SIZE) {
@@ -301,7 +330,7 @@ void xe_ggtt_map_bo(struct xe_ggtt *ggtt, struct xe_bo *bo)
u64 offset, pte;
for (offset = 0; offset < bo->size; offset += XE_PAGE_SIZE) {
- pte = xe_ggtt_pte_encode(bo, offset);
+ pte = ggtt->pt_ops->pte_encode_bo(bo, offset, XE_CACHE_WB);
xe_ggtt_set_pte(ggtt, start + offset, pte);
}
diff --git a/drivers/gpu/drm/xe/xe_ggtt.h b/drivers/gpu/drm/xe/xe_ggtt.h
index 205a6d058bbd..3faa3c6d0375 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.h
+++ b/drivers/gpu/drm/xe/xe_ggtt.h
@@ -10,7 +10,6 @@
struct drm_printer;
-u64 xe_ggtt_pte_encode(struct xe_bo *bo, u64 bo_offset);
void xe_ggtt_set_pte(struct xe_ggtt *ggtt, u64 addr, u64 pte);
void xe_ggtt_invalidate(struct xe_ggtt *ggtt);
int xe_ggtt_init_noalloc(struct xe_ggtt *ggtt);
diff --git a/drivers/gpu/drm/xe/xe_ggtt_types.h b/drivers/gpu/drm/xe/xe_ggtt_types.h
index d34b3e733945..486016ea5b67 100644
--- a/drivers/gpu/drm/xe/xe_ggtt_types.h
+++ b/drivers/gpu/drm/xe/xe_ggtt_types.h
@@ -8,9 +8,16 @@
#include <drm/drm_mm.h>
+#include "xe_pt_types.h"
+
struct xe_bo;
struct xe_gt;
+struct xe_ggtt_pt_ops {
+ u64 (*pte_encode_bo)(struct xe_bo *bo, u64 bo_offset,
+ enum xe_cache_level cache);
+};
+
struct xe_ggtt {
struct xe_tile *tile;
@@ -25,6 +32,8 @@ struct xe_ggtt {
u64 __iomem *gsm;
+ const struct xe_ggtt_pt_ops *pt_ops;
+
struct drm_mm mm;
};
--
2.40.1
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