From 473f9aca6c1063bf77cd61c2683fc496850d63b3 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 1 Nov 2017 03:56:19 +1000 Subject: [PATCH] drm/nouveau/mmu/nv41: implement new vmm backend Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c | 69 ----------------------- drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c | 64 +++++++++++++++++++++ 2 files changed, 64 insertions(+), 69 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c index cb037f4..457cf50 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c @@ -24,75 +24,10 @@ #include "vmm.h" #include -#include #include #define NV41_GART_SIZE (512 * 1024 * 1024) -#define NV41_GART_PAGE ( 4 * 1024) - -/******************************************************************************* - * VM map/unmap callbacks - ******************************************************************************/ - -static void -nv41_vm_map_sg(struct nvkm_vma *vma, struct nvkm_memory *pgt, - struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) -{ - pte = pte * 4; - nvkm_kmap(pgt); - while (cnt) { - u32 page = PAGE_SIZE / NV41_GART_PAGE; - u64 phys = (u64)*list++; - while (cnt && page--) { - nvkm_wo32(pgt, pte, (phys >> 7) | 1); - phys += NV41_GART_PAGE; - pte += 4; - cnt -= 1; - } - } - nvkm_done(pgt); -} - -static void -nv41_vm_unmap(struct nvkm_vma *vma, struct nvkm_memory *pgt, u32 pte, u32 cnt) -{ - pte = pte * 4; - nvkm_kmap(pgt); - while (cnt--) { - nvkm_wo32(pgt, pte, 0x00000000); - pte += 4; - } - nvkm_done(pgt); -} - -static void -nv41_vm_flush(struct nvkm_vm *vm) -{ - struct nvkm_subdev *subdev = &vm->mmu->subdev; - struct nvkm_device *device = subdev->device; - - mutex_lock(&subdev->mutex); - nvkm_wr32(device, 0x100810, 0x00000022); - nvkm_msec(device, 2000, - if (nvkm_rd32(device, 0x100810) & 0x00000020) - break; - ); - nvkm_wr32(device, 0x100810, 0x00000000); - mutex_unlock(&subdev->mutex); -} - -/******************************************************************************* - * MMU subdev - ******************************************************************************/ - -static int -nv41_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; -} static void nv41_mmu_init(struct nvkm_mmu *mmu) @@ -105,16 +40,12 @@ nv41_mmu_init(struct nvkm_mmu *mmu) static const struct nvkm_mmu_func nv41_mmu = { - .oneinit = nv41_mmu_oneinit, .init = nv41_mmu_init, .limit = NV41_GART_SIZE, .dma_bits = 39, .pgt_bits = 32 - 12, .spg_shift = 12, .lpg_shift = 12, - .map_sg = nv41_vm_map_sg, - .unmap = nv41_vm_unmap, - .flush = nv41_vm_flush, .vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv41_vmm_new, true }, }; diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c index 8a624d7c..b595f13 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv41.c @@ -21,8 +21,54 @@ */ #include "vmm.h" +#include + +static void +nv41_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 >> 7) | 0x00000001; /* VALID. */ + while (ptes--) { + VMM_WO032(pt, vmm, ptei++ * 4, data); + data += 0x00000020; + } +} + +static void +nv41_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, nv41_vmm_pgt_pte); +} + +static void +nv41_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--) { + const u32 data = (*map->dma++ >> 7) | 0x00000001; + VMM_WO032(pt, vmm, ptei++ * 4, data); + } + nvkm_done(pt->memory); +#else + VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv41_vmm_pgt_pte); +#endif +} + +static void +nv41_vmm_pgt_unmap(struct nvkm_vmm *vmm, + struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes) +{ + VMM_FO032(pt, vmm, ptei * 4, 0, ptes); +} + static const struct nvkm_vmm_desc_func nv41_vmm_desc_pgt = { + .unmap = nv41_vmm_pgt_unmap, + .dma = nv41_vmm_pgt_dma, + .sgl = nv41_vmm_pgt_sgl, }; static const struct nvkm_vmm_desc @@ -31,8 +77,26 @@ nv41_vmm_desc_12[] = { {} }; +static void +nv41_vmm_flush(struct nvkm_vmm *vmm, int level) +{ + struct nvkm_subdev *subdev = &vmm->mmu->subdev; + struct nvkm_device *device = subdev->device; + + mutex_lock(&subdev->mutex); + nvkm_wr32(device, 0x100810, 0x00000022); + nvkm_msec(device, 2000, + if (nvkm_rd32(device, 0x100810) & 0x00000020) + break; + ); + nvkm_wr32(device, 0x100810, 0x00000000); + mutex_unlock(&subdev->mutex); +} + static const struct nvkm_vmm_func nv41_vmm = { + .valid = nv04_vmm_valid, + .flush = nv41_vmm_flush, .page = { { 12, &nv41_vmm_desc_12[0], NVKM_VMM_PAGE_HOST }, {} -- 2.7.4