From dd12d158eb91442674111a423d88abee4180b5a9 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 1 Nov 2017 03:56:19 +1000 Subject: [PATCH] drm/nouveau/mmu/nv04: implement new vmm backend Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/include/nvif/if000d.h | 4 ++ drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv04.c | 57 ---------------------- drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h | 1 + drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv04.c | 58 ++++++++++++++++++++++- 4 files changed, 62 insertions(+), 58 deletions(-) diff --git a/drivers/gpu/drm/nouveau/include/nvif/if000d.h b/drivers/gpu/drm/nouveau/include/nvif/if000d.h index 0f94eb50..516ec94 100644 --- a/drivers/gpu/drm/nouveau/include/nvif/if000d.h +++ b/drivers/gpu/drm/nouveau/include/nvif/if000d.h @@ -5,4 +5,8 @@ struct nv04_vmm_vn { /* nvif_vmm_vX ... */ }; + +struct nv04_vmm_map_vn { + /* nvif_vmm_map_vX ... */ +}; #endif diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv04.c index 3e60364..13438db 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv04.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv04.c @@ -26,71 +26,14 @@ #include #define NV04_PDMA_SIZE (128 * 1024 * 1024) -#define NV04_PDMA_PAGE ( 4 * 1024) - -/******************************************************************************* - * VM map/unmap callbacks - ******************************************************************************/ - -static void -nv04_vm_map_sg(struct nvkm_vma *vma, struct nvkm_memory *pgt, - struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) -{ - pte = 0x00008 + (pte * 4); - nvkm_kmap(pgt); - while (cnt) { - u32 page = PAGE_SIZE / NV04_PDMA_PAGE; - u32 phys = (u32)*list++; - while (cnt && page--) { - nvkm_wo32(pgt, pte, phys | 3); - phys += NV04_PDMA_PAGE; - pte += 4; - cnt -= 1; - } - } - nvkm_done(pgt); -} - -static void -nv04_vm_unmap(struct nvkm_vma *vma, struct nvkm_memory *pgt, u32 pte, u32 cnt) -{ - pte = 0x00008 + (pte * 4); - nvkm_kmap(pgt); - while (cnt--) { - nvkm_wo32(pgt, pte, 0x00000000); - pte += 4; - } - nvkm_done(pgt); -} - -static void -nv04_vm_flush(struct nvkm_vm *vm) -{ -} - -/******************************************************************************* - * MMU subdev - ******************************************************************************/ - -static int -nv04_mmu_oneinit(struct nvkm_mmu *mmu) -{ - mmu->vmm->pgt[0].mem[0] = mmu->vmm->pd->pt[0]->memory; - mmu->vmm->pgt[0].refcount[0] = 1; - return 0; -} const struct nvkm_mmu_func nv04_mmu = { - .oneinit = nv04_mmu_oneinit, .limit = NV04_PDMA_SIZE, .dma_bits = 32, .pgt_bits = 32 - 12, .spg_shift = 12, .lpg_shift = 12, - .map_sg = nv04_vm_map_sg, - .unmap = nv04_vm_unmap, - .flush = nv04_vm_flush, .vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv04_vmm_new, true }, }; diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h index 042d84c..cbb8d47 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h @@ -157,6 +157,7 @@ void nvkm_vmm_ptes_unmap(struct nvkm_vmm *, const struct nvkm_vmm_page *, int nv04_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *, u32, u64, u64, void *, u32, struct lock_class_key *, const char *, struct nvkm_vmm **); +int nv04_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *); int gf100_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *, struct nvkm_mmu *, u64, u64, void *, u32, diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv04.c index 1f874b3..0cab1ff 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv04.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv04.c @@ -24,8 +24,50 @@ #include #include +static inline void +nv04_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, + u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr) +{ + u32 data = addr | 0x00000003; /* PRESENT, RW. */ + while (ptes--) { + VMM_WO032(pt, vmm, 8 + ptei++ * 4, data); + data += 0x00001000; + } +} + +static void +nv04_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, + u32 ptei, u32 ptes, struct nvkm_vmm_map *map) +{ + VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte); +} + +static void +nv04_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, + u32 ptei, u32 ptes, struct nvkm_vmm_map *map) +{ +#if PAGE_SHIFT == 12 + nvkm_kmap(pt->memory); + while (ptes--) + VMM_WO032(pt, vmm, 8 + (ptei++ * 4), *map->dma++ | 0x00000003); + nvkm_done(pt->memory); +#else + VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte); +#endif +} + +static void +nv04_vmm_pgt_unmap(struct nvkm_vmm *vmm, + struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes) +{ + VMM_FO032(pt, vmm, 8 + (ptei * 4), 0, ptes); +} + static const struct nvkm_vmm_desc_func nv04_vmm_desc_pgt = { + .unmap = nv04_vmm_pgt_unmap, + .dma = nv04_vmm_pgt_dma, + .sgl = nv04_vmm_pgt_sgl, }; static const struct nvkm_vmm_desc @@ -34,8 +76,22 @@ nv04_vmm_desc_12[] = { {} }; +int +nv04_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc, + struct nvkm_vmm_map *map) +{ + union { + struct nv04_vmm_map_vn vn; + } *args = argv; + int ret = -ENOSYS; + if ((ret = nvif_unvers(ret, &argv, &argc, args->vn))) + VMM_DEBUG(vmm, "args"); + return ret; +} + static const struct nvkm_vmm_func nv04_vmm = { + .valid = nv04_vmm_valid, .page = { { 12, &nv04_vmm_desc_12[0], NVKM_VMM_PAGE_HOST }, {} @@ -65,8 +121,8 @@ nv04_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc, struct lock_class_key *key, const char *name, struct nvkm_vmm **pvmm) { - struct nvkm_vmm *vmm; struct nvkm_memory *mem; + struct nvkm_vmm *vmm; int ret; ret = nv04_vmm_new_(&nv04_vmm, mmu, 8, addr, size, -- 2.7.4