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drm/panfrost: Use GPU_MMU_FEATURES_VA_BITS/PA_BITS macros

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As done in panthor, define and use these GPU_MMU_FEATURES_* macros,
which makes code easier to read and reuse.

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250324185801.168664-3-ariel.dalessandro@collabora.com
This commit is contained in:
Ariel D'Alessandro 2025-03-24 15:57:57 -03:00 committed by Steven Price
parent f91e534f4e
commit 0b9bcf9a76
2 changed files with 6 additions and 2 deletions
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6
drivers/gpu/drm/panfrost/panfrost_mmu.c
View File

@ -615,6 +615,8 @@ static void panfrost_drm_mm_color_adjust(const struct drm_mm_node *node,
struct panfrost_mmu *panfrost_mmu_ctx_create(struct panfrost_device *pfdev)
{
u32 va_bits = GPU_MMU_FEATURES_VA_BITS(pfdev->features.mmu_features);
u32 pa_bits = GPU_MMU_FEATURES_PA_BITS(pfdev->features.mmu_features);
struct panfrost_mmu *mmu;
mmu = kzalloc(sizeof(*mmu), GFP_KERNEL);
@ -633,8 +635,8 @@ struct panfrost_mmu *panfrost_mmu_ctx_create(struct panfrost_device *pfdev)
mmu->pgtbl_cfg = (struct io_pgtable_cfg) {
.pgsize_bitmap = SZ_4K | SZ_2M,
.ias = FIELD_GET(0xff, pfdev->features.mmu_features),
.oas = FIELD_GET(0xff00, pfdev->features.mmu_features),
.ias = va_bits,
.oas = pa_bits,
.coherent_walk = pfdev->coherent,
.tlb = &mmu_tlb_ops,
.iommu_dev = pfdev->dev,

2
drivers/gpu/drm/panfrost/panfrost_regs.h
View File

@ -16,6 +16,8 @@
#define GROUPS_L2_COHERENT BIT(0) /* Cores groups are l2 coherent */
#define GPU_MMU_FEATURES 0x014 /* (RO) MMU features */
#define GPU_MMU_FEATURES_VA_BITS(x) ((x) & GENMASK(7, 0))
#define GPU_MMU_FEATURES_PA_BITS(x) (((x) >> 8) & GENMASK(7, 0))
#define GPU_AS_PRESENT 0x018 /* (RO) Address space slots present */
#define GPU_JS_PRESENT 0x01C /* (RO) Job slots present */