diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_vm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_vm.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_vm.c b/drivers/gpu/drm/nouveau/nv50_vm.c new file mode 100644 index 00000000..44fbac9c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv50_vm.c @@ -0,0 +1,179 @@ +/* + * 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 +nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde, + struct nouveau_gpuobj *pgt[2]) +{ + u64 phys = 0xdeadcafe00000000ULL; + u32 coverage = 0; + + if (pgt[0]) { + phys = 0x00000003 | pgt[0]->vinst; /* present, 4KiB pages */ + coverage = (pgt[0]->size >> 3) << 12; + } else + if (pgt[1]) { + phys = 0x00000001 | pgt[1]->vinst; /* present */ + coverage = (pgt[1]->size >> 3) << 16; + } + + if (phys & 1) { + if (coverage <= 32 * 1024 * 1024) + phys |= 0x60; + else if (coverage <= 64 * 1024 * 1024) + phys |= 0x40; + else if (coverage <= 128 * 1024 * 1024) + phys |= 0x20; + } + + nv_wo32(pgd, (pde * 8) + 0, lower_32_bits(phys)); + nv_wo32(pgd, (pde * 8) + 4, upper_32_bits(phys)); +} + +static inline u64 +vm_addr(struct nouveau_vma *vma, u64 phys, u32 memtype, u32 target) +{ + phys |= 1; /* present */ + phys |= (u64)memtype << 40; + phys |= target << 4; + if (vma->access & NV_MEM_ACCESS_SYS) + phys |= (1 << 6); + if (!(vma->access & NV_MEM_ACCESS_WO)) + phys |= (1 << 3); + return phys; +} + +void +nv50_vm_map(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, + struct nouveau_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta) +{ + struct drm_nouveau_private *dev_priv = vma->vm->dev->dev_private; + u32 comp = (mem->memtype & 0x180) >> 7; + u32 block, target; + int i; + + /* IGPs don't have real VRAM, re-target to stolen system memory */ + target = 0; + if (dev_priv->vram_sys_base) { + phys += dev_priv->vram_sys_base; + target = 3; + } + + phys = vm_addr(vma, phys, mem->memtype, target); + pte <<= 3; + cnt <<= 3; + + while (cnt) { + u32 offset_h = upper_32_bits(phys); + u32 offset_l = lower_32_bits(phys); + + for (i = 7; i >= 0; i--) { + block = 1 << (i + 3); + if (cnt >= block && !(pte & (block - 1))) + break; + } + offset_l |= (i << 7); + + phys += block << (vma->node->type - 3); + cnt -= block; + if (comp) { + u32 tag = mem->tag->start + ((delta >> 16) * comp); + offset_h |= (tag << 17); + delta += block << (vma->node->type - 3); + } + + while (block) { + nv_wo32(pgt, pte + 0, offset_l); + nv_wo32(pgt, pte + 4, offset_h); + pte += 8; + block -= 8; + } + } +} + +void +nv50_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, + struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) +{ + u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 3 : 2; + pte <<= 3; + while (cnt--) { + u64 phys = vm_addr(vma, (u64)*list++, mem->memtype, target); + nv_wo32(pgt, pte + 0, lower_32_bits(phys)); + nv_wo32(pgt, pte + 4, upper_32_bits(phys)); + pte += 8; + } +} + +void +nv50_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 +nv50_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 nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo; + int i; + + pinstmem->flush(vm->dev); + + /* BAR */ + if (vm == dev_priv->bar1_vm || vm == dev_priv->bar3_vm) { + nv50_vm_flush_engine(vm->dev, 6); + return; + } + + pfifo->tlb_flush(vm->dev); + for (i = 0; i < NVOBJ_ENGINE_NR; i++) { + if (atomic_read(&vm->engref[i])) + dev_priv->eng[i]->tlb_flush(vm->dev, i); + } +} + +void +nv50_vm_flush_engine(struct drm_device *dev, int engine) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + unsigned long flags; + + spin_lock_irqsave(&dev_priv->vm_lock, flags); + nv_wr32(dev, 0x100c80, (engine << 16) | 1); + if (!nv_wait(dev, 0x100c80, 0x00000001, 0x00000000)) + NV_ERROR(dev, "vm flush timeout: engine %d\n", engine); + spin_unlock_irqrestore(&dev_priv->vm_lock, flags); +} |