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authorBen Skeggs <bskeggs@redhat.com>2017-10-31 20:56:19 +0300
committerBen Skeggs <bskeggs@redhat.com>2017-11-02 06:32:29 +0300
commitfd542a3e525c9f7a7de186cb24208c035bcea2d1 (patch)
treec64bb115b33f590c5bce15434b86817ecc4c8e95 /drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c
parent6ce513529aa57a8c4f61e588142643a9252037ae (diff)
downloadlinux-fd542a3e525c9f7a7de186cb24208c035bcea2d1.tar.xz
drm/nouveau/mmu/nv50,g84: implement new vmm backend
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c293
1 files changed, 292 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c
index db27381b67c6..863a2edd9861 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c
@@ -21,15 +21,146 @@
*/
#include "vmm.h"
+#include <subdev/fb.h>
+#include <subdev/timer.h>
+#include <engine/gr.h>
+
#include <nvif/if500d.h>
#include <nvif/unpack.h>
+static inline void
+nv50_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
+{
+ u64 next = addr | map->type, data;
+ u32 pten;
+ int log2blk;
+
+ map->type += ptes * map->ctag;
+
+ while (ptes) {
+ for (log2blk = 7; log2blk >= 0; log2blk--) {
+ pten = 1 << log2blk;
+ if (ptes >= pten && IS_ALIGNED(ptei, pten))
+ break;
+ }
+
+ data = next | (log2blk << 7);
+ next += pten * map->next;
+ ptes -= pten;
+
+ while (pten--)
+ VMM_WO064(pt, vmm, ptei++ * 8, data);
+ }
+}
+
+static void
+nv50_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, nv50_vmm_pgt_pte);
+}
+
+static void
+nv50_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
+{
+ if (map->page->shift == PAGE_SHIFT) {
+ VMM_SPAM(vmm, "DMAA %08x %08x PTE(s)", ptei, ptes);
+ nvkm_kmap(pt->memory);
+ while (ptes--) {
+ const u64 data = *map->dma++ | map->type;
+ VMM_WO064(pt, vmm, ptei++ * 8, data);
+ map->type += map->ctag;
+ }
+ nvkm_done(pt->memory);
+ return;
+ }
+
+ VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte);
+}
+
+static void
+nv50_vmm_pgt_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
+{
+ VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte);
+}
+
+static void
+nv50_vmm_pgt_unmap(struct nvkm_vmm *vmm,
+ struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
+{
+ VMM_FO064(pt, vmm, ptei * 8, 0ULL, ptes);
+}
+
static const struct nvkm_vmm_desc_func
nv50_vmm_pgt = {
+ .unmap = nv50_vmm_pgt_unmap,
+ .mem = nv50_vmm_pgt_mem,
+ .dma = nv50_vmm_pgt_dma,
+ .sgl = nv50_vmm_pgt_sgl,
};
+static bool
+nv50_vmm_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgt, u64 *pdata)
+{
+ struct nvkm_mmu_pt *pt;
+ u64 data = 0xdeadcafe00000000ULL;
+ if (pgt && (pt = pgt->pt[0])) {
+ switch (pgt->page) {
+ case 16: data = 0x00000001; break;
+ case 12: data = 0x00000003;
+ switch (nvkm_memory_size(pt->memory)) {
+ case 0x100000: data |= 0x00000000; break;
+ case 0x040000: data |= 0x00000020; break;
+ case 0x020000: data |= 0x00000040; break;
+ case 0x010000: data |= 0x00000060; break;
+ default:
+ WARN_ON(1);
+ return false;
+ }
+ break;
+ default:
+ WARN_ON(1);
+ return false;
+ }
+
+ switch (nvkm_memory_target(pt->memory)) {
+ case NVKM_MEM_TARGET_VRAM: data |= 0x00000000; break;
+ case NVKM_MEM_TARGET_HOST: data |= 0x00000008; break;
+ case NVKM_MEM_TARGET_NCOH: data |= 0x0000000c; break;
+ default:
+ WARN_ON(1);
+ return false;
+ }
+
+ data |= pt->addr;
+ }
+ *pdata = data;
+ return true;
+}
+
+static void
+nv50_vmm_pgd_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
+{
+ struct nvkm_vmm_join *join;
+ u32 pdeo = vmm->mmu->func->vmm.pd_offset + (pdei * 8);
+ u64 data;
+
+ if (!nv50_vmm_pde(vmm, pgd->pde[pdei], &data))
+ return;
+
+ list_for_each_entry(join, &vmm->join, head) {
+ nvkm_kmap(join->inst);
+ nvkm_wo64(join->inst, pdeo, data);
+ nvkm_done(join->inst);
+ }
+}
+
static const struct nvkm_vmm_desc_func
nv50_vmm_pgd = {
+ .pde = nv50_vmm_pgd_pde,
};
static const struct nvkm_vmm_desc
@@ -47,6 +178,150 @@ nv50_vmm_desc_16[] = {
};
static void
+nv50_vmm_flush(struct nvkm_vmm *vmm, int level)
+{
+ struct nvkm_subdev *subdev = &vmm->mmu->subdev;
+ struct nvkm_device *device = subdev->device;
+ int i, id;
+
+ mutex_lock(&subdev->mutex);
+ for (i = 0; i < NVKM_SUBDEV_NR; i++) {
+ if (!atomic_read(&vmm->engref[i]))
+ continue;
+
+ /* unfortunate hw bug workaround... */
+ if (i == NVKM_ENGINE_GR && device->gr) {
+ int ret = nvkm_gr_tlb_flush(device->gr);
+ if (ret != -ENODEV)
+ continue;
+ }
+
+ switch (i) {
+ case NVKM_ENGINE_GR : id = 0x00; break;
+ case NVKM_ENGINE_VP :
+ case NVKM_ENGINE_MSPDEC: id = 0x01; break;
+ case NVKM_SUBDEV_BAR : id = 0x06; break;
+ case NVKM_ENGINE_MSPPP :
+ case NVKM_ENGINE_MPEG : id = 0x08; break;
+ case NVKM_ENGINE_BSP :
+ case NVKM_ENGINE_MSVLD : id = 0x09; break;
+ case NVKM_ENGINE_CIPHER:
+ case NVKM_ENGINE_SEC : id = 0x0a; break;
+ case NVKM_ENGINE_CE0 : id = 0x0d; break;
+ default:
+ continue;
+ }
+
+ nvkm_wr32(device, 0x100c80, (id << 16) | 1);
+ if (nvkm_msec(device, 2000,
+ if (!(nvkm_rd32(device, 0x100c80) & 0x00000001))
+ break;
+ ) < 0)
+ nvkm_error(subdev, "%s mmu invalidate timeout\n",
+ nvkm_subdev_name[i]);
+ }
+ mutex_unlock(&subdev->mutex);
+}
+
+static int
+nv50_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,
+ struct nvkm_vmm_map *map)
+{
+ const struct nvkm_vmm_page *page = map->page;
+ union {
+ struct nv50_vmm_map_vn vn;
+ struct nv50_vmm_map_v0 v0;
+ } *args = argv;
+ struct nvkm_device *device = vmm->mmu->subdev.device;
+ struct nvkm_ram *ram = device->fb->ram;
+ struct nvkm_memory *memory = map->memory;
+ u8 aper, kind, comp, priv, ro;
+ int kindn, ret = -ENOSYS;
+ const u8 *kindm;
+
+ map->type = map->ctag = 0;
+ map->next = 1 << page->shift;
+
+ if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
+ ro = !!args->v0.ro;
+ priv = !!args->v0.priv;
+ kind = args->v0.kind & 0x7f;
+ comp = args->v0.comp & 0x03;
+ } else
+ if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
+ ro = 0;
+ priv = 0;
+ kind = 0x00;
+ comp = 0;
+ } else {
+ VMM_DEBUG(vmm, "args");
+ return ret;
+ }
+
+ switch (nvkm_memory_target(memory)) {
+ case NVKM_MEM_TARGET_VRAM:
+ if (ram->stolen) {
+ map->type |= ram->stolen;
+ aper = 3;
+ } else {
+ aper = 0;
+ }
+ break;
+ case NVKM_MEM_TARGET_HOST:
+ aper = 2;
+ break;
+ case NVKM_MEM_TARGET_NCOH:
+ aper = 3;
+ break;
+ default:
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ kindm = vmm->mmu->func->kind(vmm->mmu, &kindn);
+ if (kind >= kindn || kindm[kind] == 0x7f) {
+ VMM_DEBUG(vmm, "kind %02x", kind);
+ return -EINVAL;
+ }
+
+ if (map->mem && map->mem->type != kindm[kind]) {
+ VMM_DEBUG(vmm, "kind %02x bankswz: %d %d", kind,
+ kindm[kind], map->mem->type);
+ return -EINVAL;
+ }
+
+ if (comp) {
+ u32 tags = (nvkm_memory_size(memory) >> 16) * comp;
+ if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) {
+ VMM_DEBUG(vmm, "comp %d %02x", aper, page->type);
+ return -EINVAL;
+ }
+
+ ret = nvkm_memory_tags_get(memory, device, tags, NULL,
+ &map->tags);
+ if (ret) {
+ VMM_DEBUG(vmm, "comp %d", ret);
+ return ret;
+ }
+
+ if (map->tags->mn) {
+ u32 tags = map->tags->mn->offset + (map->offset >> 16);
+ map->ctag |= (u64)comp << 49;
+ map->type |= (u64)comp << 47;
+ map->type |= (u64)tags << 49;
+ map->next |= map->ctag;
+ }
+ }
+
+ map->type |= BIT(0); /* Valid. */
+ map->type |= (u64)ro << 3;
+ map->type |= (u64)aper << 4;
+ map->type |= (u64)priv << 6;
+ map->type |= (u64)kind << 40;
+ return 0;
+}
+
+static void
nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
{
struct nvkm_vmm_join *join;
@@ -63,19 +338,35 @@ nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
static int
nv50_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
{
+ const u32 pd_offset = vmm->mmu->func->vmm.pd_offset;
struct nvkm_vmm_join *join;
+ int ret = 0;
+ u64 data;
+ u32 pdei;
if (!(join = kmalloc(sizeof(*join), GFP_KERNEL)))
return -ENOMEM;
join->inst = inst;
list_add_tail(&join->head, &vmm->join);
- return 0;
+
+ nvkm_kmap(join->inst);
+ for (pdei = vmm->start >> 29; pdei <= (vmm->limit - 1) >> 29; pdei++) {
+ if (!nv50_vmm_pde(vmm, vmm->pd->pde[pdei], &data)) {
+ ret = -EINVAL;
+ break;
+ }
+ nvkm_wo64(join->inst, pd_offset + (pdei * 8), data);
+ }
+ nvkm_done(join->inst);
+ return ret;
}
static const struct nvkm_vmm_func
nv50_vmm = {
.join = nv50_vmm_join,
.part = nv50_vmm_part,
+ .valid = nv50_vmm_valid,
+ .flush = nv50_vmm_flush,
.page_block = 1 << 29,
.page = {
{ 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxC },