diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_vm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvc0_vm.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_vm.c b/drivers/gpu/drm/nouveau/nvc0_vm.c new file mode 100644 index 00000000..30d2bd58 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvc0_vm.c @@ -0,0 +1,136 @@ +/* + * 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_mem *mem, u32 pte, u32 cnt, u64 phys, u64 delta) +{ + 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, + struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) +{ + u32 target = (vma->access & NV_MEM_ACCESS_NOSNOOP) ? 7 : 5; + + pte <<= 3; + while (cnt--) { + u64 phys = nvc0_vm_addr(vma, *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 +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; + unsigned long flags; + u32 engine; + + engine = 1; + if (vm == dev_priv->bar1_vm || vm == dev_priv->bar3_vm) + engine |= 4; + + pinstmem->flush(vm->dev); + + spin_lock_irqsave(&dev_priv->vm_lock, flags); + list_for_each_entry(vpgd, &vm->pgd_list, head) { + /* looks like maybe a "free flush slots" counter, the + * faster you write to 0x100cbc to more it decreases + */ + if (!nv_wait_ne(dev, 0x100c80, 0x00ff0000, 0x00000000)) { + NV_ERROR(dev, "vm timeout 0: 0x%08x %d\n", + nv_rd32(dev, 0x100c80), engine); + } + nv_wr32(dev, 0x100cb8, vpgd->obj->vinst >> 8); + nv_wr32(dev, 0x100cbc, 0x80000000 | engine); + /* wait for flush to be queued? */ + if (!nv_wait(dev, 0x100c80, 0x00008000, 0x00008000)) { + NV_ERROR(dev, "vm timeout 1: 0x%08x %d\n", + nv_rd32(dev, 0x100c80), engine); + } + } + spin_unlock_irqrestore(&dev_priv->vm_lock, flags); +} |