| /* |
| * 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 <core/device.h> |
| #include <core/gpuobj.h> |
| |
| #include <subdev/timer.h> |
| #include <subdev/fb.h> |
| #include <subdev/vm.h> |
| |
| struct nvc0_vmmgr_priv { |
| struct nouveau_vmmgr base; |
| spinlock_t lock; |
| }; |
| |
| 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]->addr >> 8); |
| if (pgt[1]) |
| pde[0] = 0x00000001 | (pgt[1]->addr >> 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_engine(struct nouveau_subdev *subdev, u64 addr, int type) |
| { |
| struct nvc0_vmmgr_priv *priv = (void *)nouveau_vmmgr(subdev); |
| unsigned long flags; |
| |
| /* looks like maybe a "free flush slots" counter, the |
| * faster you write to 0x100cbc to more it decreases |
| */ |
| spin_lock_irqsave(&priv->lock, flags); |
| if (!nv_wait_ne(subdev, 0x100c80, 0x00ff0000, 0x00000000)) { |
| nv_error(subdev, "vm timeout 0: 0x%08x %d\n", |
| nv_rd32(subdev, 0x100c80), type); |
| } |
| |
| nv_wr32(subdev, 0x100cb8, addr >> 8); |
| nv_wr32(subdev, 0x100cbc, 0x80000000 | type); |
| |
| /* wait for flush to be queued? */ |
| if (!nv_wait(subdev, 0x100c80, 0x00008000, 0x00008000)) { |
| nv_error(subdev, "vm timeout 1: 0x%08x %d\n", |
| nv_rd32(subdev, 0x100c80), type); |
| } |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| void |
| nvc0_vm_flush(struct nouveau_vm *vm) |
| { |
| struct nouveau_vm_pgd *vpgd; |
| |
| list_for_each_entry(vpgd, &vm->pgd_list, head) { |
| nvc0_vm_flush_engine(nv_subdev(vm->vmm), vpgd->obj->addr, 1); |
| } |
| } |
| |
| static int |
| nvc0_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length, |
| u64 mm_offset, struct nouveau_vm **pvm) |
| { |
| return nouveau_vm_create(vmm, offset, length, mm_offset, 4096, pvm); |
| } |
| |
| static int |
| nvc0_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, void *data, u32 size, |
| struct nouveau_object **pobject) |
| { |
| struct nvc0_vmmgr_priv *priv; |
| int ret; |
| |
| ret = nouveau_vmmgr_create(parent, engine, oclass, "VM", "vm", &priv); |
| *pobject = nv_object(priv); |
| if (ret) |
| return ret; |
| |
| priv->base.pgt_bits = 27 - 12; |
| priv->base.spg_shift = 12; |
| priv->base.lpg_shift = 17; |
| priv->base.create = nvc0_vm_create; |
| priv->base.map_pgt = nvc0_vm_map_pgt; |
| priv->base.map = nvc0_vm_map; |
| priv->base.map_sg = nvc0_vm_map_sg; |
| priv->base.unmap = nvc0_vm_unmap; |
| priv->base.flush = nvc0_vm_flush; |
| spin_lock_init(&priv->lock); |
| return 0; |
| } |
| |
| struct nouveau_oclass |
| nvc0_vmmgr_oclass = { |
| .handle = NV_SUBDEV(VM, 0xc0), |
| .ofuncs = &(struct nouveau_ofuncs) { |
| .ctor = nvc0_vmmgr_ctor, |
| .dtor = _nouveau_vmmgr_dtor, |
| .init = _nouveau_vmmgr_init, |
| .fini = _nouveau_vmmgr_fini, |
| }, |
| }; |