From 4c74eb7ff276813ee73943a3756b295675fb2865 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 10 Nov 2010 14:10:04 +1000 Subject: [PATCH] drm/nvc0: import initial vm backend Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/Makefile | 2 +- drivers/gpu/drm/nouveau/nouveau_bo.c | 5 +- drivers/gpu/drm/nouveau/nouveau_drv.h | 1 + drivers/gpu/drm/nouveau/nouveau_mem.c | 4 + drivers/gpu/drm/nouveau/nouveau_vm.c | 31 ++++++- drivers/gpu/drm/nouveau/nouveau_vm.h | 10 +++ drivers/gpu/drm/nouveau/nvc0_vm.c | 123 ++++++++++++++++++++++++++ 7 files changed, 169 insertions(+), 7 deletions(-) create mode 100644 drivers/gpu/drm/nouveau/nvc0_vm.c diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile index b1d8941e04d8..e89d89593af1 100644 --- a/drivers/gpu/drm/nouveau/Makefile +++ b/drivers/gpu/drm/nouveau/Makefile @@ -28,7 +28,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \ nv10_gpio.o nv50_gpio.o \ nv50_calc.o \ nv04_pm.o nv50_pm.o nva3_pm.o \ - nv50_vram.o nv50_vm.o + nv50_vram.o nv50_vm.o nvc0_vm.o nouveau-$(CONFIG_DRM_NOUVEAU_DEBUG) += nouveau_debugfs.o nouveau-$(CONFIG_COMPAT) += nouveau_ioc32.o diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 42d1ad62b381..d17ffea3c617 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -909,8 +909,9 @@ nouveau_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) break; } - ret = nouveau_vm_get(dev_priv->bar1_vm, mem->bus.size, 12, - NV_MEM_ACCESS_RW, &vram->bar_vma); + ret = nouveau_vm_get(dev_priv->bar1_vm, mem->bus.size, + vram->page_shift, NV_MEM_ACCESS_RW, + &vram->bar_vma); if (ret) return ret; diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index 8f13906185b2..57da219fb18b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -69,6 +69,7 @@ struct nouveau_vram { struct drm_device *dev; struct nouveau_vma bar_vma; + u8 page_shift; struct list_head regions; u32 memtype; diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c index 224181193a1f..07be1dd04530 100644 --- a/drivers/gpu/drm/nouveau/nouveau_mem.c +++ b/drivers/gpu/drm/nouveau/nouveau_mem.c @@ -731,6 +731,10 @@ nouveau_vram_manager_new(struct ttm_mem_type_manager *man, if (ret) return ret; + node->page_shift = 12; + if (nvbo->vma.node) + node->page_shift = nvbo->vma.node->type; + mem->mm_node = node; mem->start = node->offset >> PAGE_SHIFT; return 0; diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.c b/drivers/gpu/drm/nouveau/nouveau_vm.c index b023a64c27d8..97d82aedf86b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vm.c +++ b/drivers/gpu/drm/nouveau/nouveau_vm.c @@ -295,7 +295,34 @@ nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset, vm->flush = nv50_vm_flush; vm->spg_shift = 12; vm->lpg_shift = 16; + pgt_bits = 29; + block = (1 << pgt_bits); + if (length < block) + block = length; + + } else + if (dev_priv->card_type == NV_C0) { + vm->map_pgt = nvc0_vm_map_pgt; + vm->map = nvc0_vm_map; + vm->map_sg = nvc0_vm_map_sg; + vm->unmap = nvc0_vm_unmap; + vm->flush = nvc0_vm_flush; + vm->spg_shift = 12; + vm->lpg_shift = 17; + pgt_bits = 27; + + /* Should be 4096 everywhere, this is a hack that's + * currently necessary to avoid an elusive bug that + * causes corruption when mixing small/large pages + */ + if (length < (1ULL << 40)) + block = 4096; + else { + block = (1 << pgt_bits); + if (length < block) + block = length; + } } else { kfree(vm); return -ENOSYS; @@ -314,10 +341,6 @@ nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset, vm->refcount = 1; vm->pgt_bits = pgt_bits - 12; - block = (1 << pgt_bits); - if (length < block) - block = length; - ret = nouveau_mm_init(&vm->mm, mm_offset >> 12, mm_length >> 12, block >> 12); if (ret) { diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.h b/drivers/gpu/drm/nouveau/nouveau_vm.h index 105b6f65f19d..e1193515771b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vm.h +++ b/drivers/gpu/drm/nouveau/nouveau_vm.h @@ -100,4 +100,14 @@ void nv50_vm_unmap(struct nouveau_gpuobj *, u32 pte, u32 cnt); void nv50_vm_flush(struct nouveau_vm *); void nv50_vm_flush_engine(struct drm_device *, int engine); +/* nvc0_vm.c */ +void nvc0_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde, + struct nouveau_gpuobj *pgt[2]); +void nvc0_vm_map(struct nouveau_vma *, struct nouveau_gpuobj *, + struct nouveau_vram *, u32 pte, u32 cnt, u64 phys); +void nvc0_vm_map_sg(struct nouveau_vma *, struct nouveau_gpuobj *, + u32 pte, dma_addr_t *, u32 cnt); +void nvc0_vm_unmap(struct nouveau_gpuobj *, u32 pte, u32 cnt); +void nvc0_vm_flush(struct nouveau_vm *); + #endif diff --git a/drivers/gpu/drm/nouveau/nvc0_vm.c b/drivers/gpu/drm/nouveau/nvc0_vm.c new file mode 100644 index 000000000000..4b9251bb0ff4 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvc0_vm.c @@ -0,0 +1,123 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#include "drmP.h" + +#include "nouveau_drv.h" +#include "nouveau_vm.h" + +void +nvc0_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 index, + struct nouveau_gpuobj *pgt[2]) +{ + u32 pde[2] = { 0, 0 }; + + if (pgt[0]) + pde[1] = 0x00000001 | (pgt[0]->vinst >> 8); + if (pgt[1]) + pde[0] = 0x00000001 | (pgt[1]->vinst >> 8); + + nv_wo32(pgd, (index * 8) + 0, pde[0]); + nv_wo32(pgd, (index * 8) + 4, pde[1]); +} + +static inline u64 +nvc0_vm_addr(struct nouveau_vma *vma, u64 phys, u32 memtype, u32 target) +{ + phys >>= 8; + + phys |= 0x00000001; /* present */ +// if (vma->access & NV_MEM_ACCESS_SYS) +// phys |= 0x00000002; + + phys |= ((u64)target << 32); + phys |= ((u64)memtype << 36); + + return phys; +} + +void +nvc0_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, + struct nouveau_vram *mem, u32 pte, u32 cnt, u64 phys) +{ + u32 next = 1 << (vma->node->type - 8); + + phys = nvc0_vm_addr(vma, phys, mem->memtype, 0); + pte <<= 3; + while (cnt--) { + nv_wo32(pgt, pte + 0, lower_32_bits(phys)); + nv_wo32(pgt, pte + 4, upper_32_bits(phys)); + phys += next; + pte += 8; + } +} + +void +nvc0_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, + u32 pte, dma_addr_t *list, u32 cnt) +{ + pte <<= 3; + while (cnt--) { + u64 phys = nvc0_vm_addr(vma, *list++, 0, 5); + nv_wo32(pgt, pte + 0, lower_32_bits(phys)); + nv_wo32(pgt, pte + 4, upper_32_bits(phys)); + pte += 8; + } +} + +void +nvc0_vm_unmap(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt) +{ + pte <<= 3; + while (cnt--) { + nv_wo32(pgt, pte + 0, 0x00000000); + nv_wo32(pgt, pte + 4, 0x00000000); + pte += 8; + } +} + +void +nvc0_vm_flush(struct nouveau_vm *vm) +{ + struct drm_nouveau_private *dev_priv = vm->dev->dev_private; + struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem; + struct drm_device *dev = vm->dev; + struct nouveau_vm_pgd *vpgd; + u32 r100c80, engine; + + pinstmem->flush(vm->dev); + + if (vm == dev_priv->chan_vm) + engine = 1; + else + engine = 5; + + list_for_each_entry(vpgd, &vm->pgd_list, head) { + r100c80 = nv_rd32(dev, 0x100c80); + nv_wr32(dev, 0x100cb8, vpgd->obj->vinst >> 8); + nv_wr32(dev, 0x100cbc, 0x80000000 | engine); + if (!nv_wait(dev, 0x100c80, 0xffffffff, r100c80)) + NV_ERROR(dev, "vm flush timeout eng %d\n", engine); + } +} -- 2.30.2