From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 1 Nov 2017 03:56:19 +1000
Subject: drm/nouveau/mmu/nv44: implement new vmm backend
Git-commit: 6ce513529aa57a8c4f61e588142643a9252037ae
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c | 144 -------------------
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv44.c | 165 ++++++++++++++++++++++
2 files changed, 168 insertions(+), 141 deletions(-)
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c
@@ -24,150 +24,16 @@
#include "vmm.h"
#include <core/option.h>
-#include <subdev/timer.h>
#include <nvif/class.h>
#define NV44_GART_SIZE (512 * 1024 * 1024)
-#define NV44_GART_PAGE ( 4 * 1024)
-
-/*******************************************************************************
- * VM map/unmap callbacks
- ******************************************************************************/
-
-static void
-nv44_vm_fill(struct nvkm_memory *pgt, dma_addr_t null,
- dma_addr_t *list, u32 pte, u32 cnt)
-{
- u32 base = (pte << 2) & ~0x0000000f;
- u32 tmp[4];
-
- tmp[0] = nvkm_ro32(pgt, base + 0x0);
- tmp[1] = nvkm_ro32(pgt, base + 0x4);
- tmp[2] = nvkm_ro32(pgt, base + 0x8);
- tmp[3] = nvkm_ro32(pgt, base + 0xc);
-
- while (cnt--) {
- u32 addr = list ? (*list++ >> 12) : (null >> 12);
- switch (pte++ & 0x3) {
- case 0:
- tmp[0] &= ~0x07ffffff;
- tmp[0] |= addr;
- break;
- case 1:
- tmp[0] &= ~0xf8000000;
- tmp[0] |= addr << 27;
- tmp[1] &= ~0x003fffff;
- tmp[1] |= addr >> 5;
- break;
- case 2:
- tmp[1] &= ~0xffc00000;
- tmp[1] |= addr << 22;
- tmp[2] &= ~0x0001ffff;
- tmp[2] |= addr >> 10;
- break;
- case 3:
- tmp[2] &= ~0xfffe0000;
- tmp[2] |= addr << 17;
- tmp[3] &= ~0x00000fff;
- tmp[3] |= addr >> 15;
- break;
- }
- }
-
- nvkm_wo32(pgt, base + 0x0, tmp[0]);
- nvkm_wo32(pgt, base + 0x4, tmp[1]);
- nvkm_wo32(pgt, base + 0x8, tmp[2]);
- nvkm_wo32(pgt, base + 0xc, tmp[3] | 0x40000000);
-}
-
-static void
-nv44_vm_map_sg(struct nvkm_vma *vma, struct nvkm_memory *pgt,
- struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list)
-{
- u32 tmp[4];
- int i;
-
- nvkm_kmap(pgt);
- if (pte & 3) {
- u32 max = 4 - (pte & 3);
- u32 part = (cnt > max) ? max : cnt;
- nv44_vm_fill(pgt, vma->vm->null, list, pte, part);
- pte += part;
- list += part;
- cnt -= part;
- }
-
- while (cnt >= 4) {
- for (i = 0; i < 4; i++)
- tmp[i] = *list++ >> 12;
- nvkm_wo32(pgt, pte++ * 4, tmp[0] >> 0 | tmp[1] << 27);
- nvkm_wo32(pgt, pte++ * 4, tmp[1] >> 5 | tmp[2] << 22);
- nvkm_wo32(pgt, pte++ * 4, tmp[2] >> 10 | tmp[3] << 17);
- nvkm_wo32(pgt, pte++ * 4, tmp[3] >> 15 | 0x40000000);
- cnt -= 4;
- }
-
- if (cnt)
- nv44_vm_fill(pgt, vma->vm->null, list, pte, cnt);
- nvkm_done(pgt);
-}
-
-static void
-nv44_vm_unmap(struct nvkm_vma *vma, struct nvkm_memory *pgt, u32 pte, u32 cnt)
-{
- nvkm_kmap(pgt);
- if (pte & 3) {
- u32 max = 4 - (pte & 3);
- u32 part = (cnt > max) ? max : cnt;
- nv44_vm_fill(pgt, vma->vm->null, NULL, pte, part);
- pte += part;
- cnt -= part;
- }
-
- while (cnt >= 4) {
- nvkm_wo32(pgt, pte++ * 4, 0x00000000);
- nvkm_wo32(pgt, pte++ * 4, 0x00000000);
- nvkm_wo32(pgt, pte++ * 4, 0x00000000);
- nvkm_wo32(pgt, pte++ * 4, 0x00000000);
- cnt -= 4;
- }
-
- if (cnt)
- nv44_vm_fill(pgt, vma->vm->null, NULL, pte, cnt);
- nvkm_done(pgt);
-}
-
-static void
-nv44_vm_flush(struct nvkm_vm *vm)
-{
- struct nvkm_device *device = vm->mmu->subdev.device;
- nvkm_wr32(device, 0x100814, vm->mmu->limit - NV44_GART_PAGE);
- nvkm_wr32(device, 0x100808, 0x00000020);
- nvkm_msec(device, 2000,
- if (nvkm_rd32(device, 0x100808) & 0x00000001)
- break;
- );
- nvkm_wr32(device, 0x100808, 0x00000000);
-}
-
-/*******************************************************************************
- * MMU subdev
- ******************************************************************************/
-
-static int
-nv44_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
nv44_mmu_init(struct nvkm_mmu *mmu)
{
struct nvkm_device *device = mmu->subdev.device;
- struct nvkm_memory *gart = mmu->vmm->pgt[0].mem[0];
+ struct nvkm_memory *pt = mmu->vmm->pd->pt[0]->memory;
u32 addr;
/* calculate vram address of this PRAMIN block, object must be
@@ -175,11 +41,11 @@ nv44_mmu_init(struct nvkm_mmu *mmu)
* of 512KiB for this to work correctly
*/
addr = nvkm_rd32(device, 0x10020c);
- addr -= ((nvkm_memory_addr(gart) >> 19) + 1) << 19;
+ addr -= ((nvkm_memory_addr(pt) >> 19) + 1) << 19;
nvkm_wr32(device, 0x100850, 0x80000000);
nvkm_wr32(device, 0x100818, mmu->vmm->null);
- nvkm_wr32(device, 0x100804, NV44_GART_SIZE);
+ nvkm_wr32(device, 0x100804, (nvkm_memory_size(pt) / 4) * 4096);
nvkm_wr32(device, 0x100850, 0x00008000);
nvkm_mask(device, 0x10008c, 0x00000200, 0x00000200);
nvkm_wr32(device, 0x100820, 0x00000000);
@@ -189,16 +55,12 @@ nv44_mmu_init(struct nvkm_mmu *mmu)
static const struct nvkm_mmu_func
nv44_mmu = {
- .oneinit = nv44_mmu_oneinit,
.init = nv44_mmu_init,
.limit = NV44_GART_SIZE,
.dma_bits = 39,
.pgt_bits = 32 - 12,
.spg_shift = 12,
.lpg_shift = 12,
- .map_sg = nv44_vm_map_sg,
- .unmap = nv44_vm_unmap,
- .flush = nv44_vm_flush,
.vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv44_vmm_new, true },
};
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv44.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv44.c
@@ -21,8 +21,158 @@
*/
#include "vmm.h"
+#include <subdev/timer.h>
+
+static void
+nv44_vmm_pgt_fill(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ dma_addr_t *list, u32 ptei, u32 ptes)
+{
+ u32 pteo = (ptei << 2) & ~0x0000000f;
+ u32 tmp[4];
+
+ tmp[0] = nvkm_ro32(pt->memory, pteo + 0x0);
+ tmp[1] = nvkm_ro32(pt->memory, pteo + 0x4);
+ tmp[2] = nvkm_ro32(pt->memory, pteo + 0x8);
+ tmp[3] = nvkm_ro32(pt->memory, pteo + 0xc);
+
+ while (ptes--) {
+ u32 addr = (list ? *list++ : vmm->null) >> 12;
+ switch (ptei++ & 0x3) {
+ case 0:
+ tmp[0] &= ~0x07ffffff;
+ tmp[0] |= addr;
+ break;
+ case 1:
+ tmp[0] &= ~0xf8000000;
+ tmp[0] |= addr << 27;
+ tmp[1] &= ~0x003fffff;
+ tmp[1] |= addr >> 5;
+ break;
+ case 2:
+ tmp[1] &= ~0xffc00000;
+ tmp[1] |= addr << 22;
+ tmp[2] &= ~0x0001ffff;
+ tmp[2] |= addr >> 10;
+ break;
+ case 3:
+ tmp[2] &= ~0xfffe0000;
+ tmp[2] |= addr << 17;
+ tmp[3] &= ~0x00000fff;
+ tmp[3] |= addr >> 15;
+ break;
+ }
+ }
+
+ VMM_WO032(pt, vmm, pteo + 0x0, tmp[0]);
+ VMM_WO032(pt, vmm, pteo + 0x4, tmp[1]);
+ VMM_WO032(pt, vmm, pteo + 0x8, tmp[2]);
+ VMM_WO032(pt, vmm, pteo + 0xc, tmp[3] | 0x40000000);
+}
+
+static void
+nv44_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
+{
+ dma_addr_t tmp[4], i;
+
+ if (ptei & 3) {
+ const u32 pten = min(ptes, 4 - (ptei & 3));
+ for (i = 0; i < pten; i++, addr += 0x1000)
+ tmp[i] = addr;
+ nv44_vmm_pgt_fill(vmm, pt, tmp, ptei, pten);
+ ptei += pten;
+ ptes -= pten;
+ }
+
+ while (ptes >= 4) {
+ for (i = 0; i < 4; i++, addr += 0x1000)
+ tmp[i] = addr >> 12;
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[0] >> 0 | tmp[1] << 27);
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[1] >> 5 | tmp[2] << 22);
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[2] >> 10 | tmp[3] << 17);
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[3] >> 15 | 0x40000000);
+ ptes -= 4;
+ }
+
+ if (ptes) {
+ for (i = 0; i < ptes; i++, addr += 0x1000)
+ tmp[i] = addr;
+ nv44_vmm_pgt_fill(vmm, pt, tmp, ptei, ptes);
+ }
+}
+
+static void
+nv44_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, nv44_vmm_pgt_pte);
+}
+
+static void
+nv44_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);
+ if (ptei & 3) {
+ const u32 pten = min(ptes, 4 - (ptei & 3));
+ nv44_vmm_pgt_fill(vmm, pt, map->dma, ptei, pten);
+ ptei += pten;
+ ptes -= pten;
+ map->dma += pten;
+ }
+
+ while (ptes >= 4) {
+ u32 tmp[4], i;
+ for (i = 0; i < 4; i++)
+ tmp[i] = *map->dma++ >> 12;
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[0] >> 0 | tmp[1] << 27);
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[1] >> 5 | tmp[2] << 22);
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[2] >> 10 | tmp[3] << 17);
+ VMM_WO032(pt, vmm, ptei++ * 4, tmp[3] >> 15 | 0x40000000);
+ ptes -= 4;
+ }
+
+ if (ptes) {
+ nv44_vmm_pgt_fill(vmm, pt, map->dma, ptei, ptes);
+ map->dma += ptes;
+ }
+ nvkm_done(pt->memory);
+#else
+ VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv44_vmm_pgt_pte);
+#endif
+}
+
+static void
+nv44_vmm_pgt_unmap(struct nvkm_vmm *vmm,
+ struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
+{
+ nvkm_kmap(pt->memory);
+ if (ptei & 3) {
+ const u32 pten = min(ptes, 4 - (ptei & 3));
+ nv44_vmm_pgt_fill(vmm, pt, NULL, ptei, pten);
+ ptei += pten;
+ ptes -= pten;
+ }
+
+ while (ptes > 4) {
+ VMM_WO032(pt, vmm, ptei++ * 4, 0x00000000);
+ VMM_WO032(pt, vmm, ptei++ * 4, 0x00000000);
+ VMM_WO032(pt, vmm, ptei++ * 4, 0x00000000);
+ VMM_WO032(pt, vmm, ptei++ * 4, 0x00000000);
+ ptes -= 4;
+ }
+
+ if (ptes)
+ nv44_vmm_pgt_fill(vmm, pt, NULL, ptei, ptes);
+ nvkm_done(pt->memory);
+}
+
static const struct nvkm_vmm_desc_func
nv44_vmm_desc_pgt = {
+ .unmap = nv44_vmm_pgt_unmap,
+ .dma = nv44_vmm_pgt_dma,
+ .sgl = nv44_vmm_pgt_sgl,
};
static const struct nvkm_vmm_desc
@@ -31,8 +181,23 @@ nv44_vmm_desc_12[] = {
{}
};
+static void
+nv44_vmm_flush(struct nvkm_vmm *vmm, int level)
+{
+ struct nvkm_device *device = vmm->mmu->subdev.device;
+ nvkm_wr32(device, 0x100814, vmm->limit - 4096);
+ nvkm_wr32(device, 0x100808, 0x000000020);
+ nvkm_msec(device, 2000,
+ if (nvkm_rd32(device, 0x100808) & 0x00000001)
+ break;
+ );
+ nvkm_wr32(device, 0x100808, 0x00000000);
+}
+
static const struct nvkm_vmm_func
nv44_vmm = {
+ .valid = nv04_vmm_valid,
+ .flush = nv44_vmm_flush,
.page = {
{ 12, &nv44_vmm_desc_12[0], NVKM_VMM_PAGE_HOST },
{}