| /* |
| * Copyright 2012 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/gpuobj.h> |
| |
| #include <subdev/timer.h> |
| #include <subdev/fb.h> |
| #include <subdev/vm.h> |
| |
| #include "priv.h" |
| |
| struct nvc0_bar_priv_vm { |
| struct nouveau_gpuobj *mem; |
| struct nouveau_gpuobj *pgd; |
| struct nouveau_vm *vm; |
| }; |
| |
| struct nvc0_bar_priv { |
| struct nouveau_bar base; |
| spinlock_t lock; |
| struct nvc0_bar_priv_vm bar[2]; |
| }; |
| |
| static int |
| nvc0_bar_kmap(struct nouveau_bar *bar, struct nouveau_mem *mem, |
| u32 flags, struct nouveau_vma *vma) |
| { |
| struct nvc0_bar_priv *priv = (void *)bar; |
| int ret; |
| |
| ret = nouveau_vm_get(priv->bar[0].vm, mem->size << 12, 12, flags, vma); |
| if (ret) |
| return ret; |
| |
| nouveau_vm_map(vma, mem); |
| return 0; |
| } |
| |
| static int |
| nvc0_bar_umap(struct nouveau_bar *bar, struct nouveau_mem *mem, |
| u32 flags, struct nouveau_vma *vma) |
| { |
| struct nvc0_bar_priv *priv = (void *)bar; |
| int ret; |
| |
| ret = nouveau_vm_get(priv->bar[1].vm, mem->size << 12, |
| mem->page_shift, flags, vma); |
| if (ret) |
| return ret; |
| |
| nouveau_vm_map(vma, mem); |
| return 0; |
| } |
| |
| static void |
| nvc0_bar_unmap(struct nouveau_bar *bar, struct nouveau_vma *vma) |
| { |
| nouveau_vm_unmap(vma); |
| nouveau_vm_put(vma); |
| } |
| |
| static int |
| nvc0_bar_init_vm(struct nvc0_bar_priv *priv, struct nvc0_bar_priv_vm *bar_vm, |
| int bar_nr) |
| { |
| struct nouveau_device *device = nv_device(&priv->base); |
| struct nouveau_vm *vm; |
| resource_size_t bar_len; |
| int ret; |
| |
| ret = nouveau_gpuobj_new(nv_object(priv), NULL, 0x1000, 0, 0, |
| &bar_vm->mem); |
| if (ret) |
| return ret; |
| |
| ret = nouveau_gpuobj_new(nv_object(priv), NULL, 0x8000, 0, 0, |
| &bar_vm->pgd); |
| if (ret) |
| return ret; |
| |
| bar_len = nv_device_resource_len(device, bar_nr); |
| |
| ret = nouveau_vm_new(device, 0, bar_len, 0, &vm); |
| if (ret) |
| return ret; |
| |
| atomic_inc(&vm->engref[NVDEV_SUBDEV_BAR]); |
| |
| /* |
| * Bootstrap page table lookup. |
| */ |
| if (bar_nr == 3) { |
| ret = nouveau_gpuobj_new(nv_object(priv), NULL, |
| (bar_len >> 12) * 8, 0x1000, |
| NVOBJ_FLAG_ZERO_ALLOC, |
| &vm->pgt[0].obj[0]); |
| vm->pgt[0].refcount[0] = 1; |
| if (ret) |
| return ret; |
| } |
| |
| ret = nouveau_vm_ref(vm, &bar_vm->vm, bar_vm->pgd); |
| nouveau_vm_ref(NULL, &vm, NULL); |
| if (ret) |
| return ret; |
| |
| nv_wo32(bar_vm->mem, 0x0200, lower_32_bits(bar_vm->pgd->addr)); |
| nv_wo32(bar_vm->mem, 0x0204, upper_32_bits(bar_vm->pgd->addr)); |
| nv_wo32(bar_vm->mem, 0x0208, lower_32_bits(bar_len - 1)); |
| nv_wo32(bar_vm->mem, 0x020c, upper_32_bits(bar_len - 1)); |
| |
| return 0; |
| } |
| |
| int |
| nvc0_bar_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
| struct nouveau_oclass *oclass, void *data, u32 size, |
| struct nouveau_object **pobject) |
| { |
| struct nouveau_device *device = nv_device(parent); |
| struct nvc0_bar_priv *priv; |
| bool has_bar3 = nv_device_resource_len(device, 3) != 0; |
| int ret; |
| |
| ret = nouveau_bar_create(parent, engine, oclass, &priv); |
| *pobject = nv_object(priv); |
| if (ret) |
| return ret; |
| |
| /* BAR3 */ |
| if (has_bar3) { |
| ret = nvc0_bar_init_vm(priv, &priv->bar[0], 3); |
| if (ret) |
| return ret; |
| priv->base.alloc = nouveau_bar_alloc; |
| priv->base.kmap = nvc0_bar_kmap; |
| } |
| |
| /* BAR1 */ |
| ret = nvc0_bar_init_vm(priv, &priv->bar[1], 1); |
| if (ret) |
| return ret; |
| |
| priv->base.umap = nvc0_bar_umap; |
| priv->base.unmap = nvc0_bar_unmap; |
| priv->base.flush = nv84_bar_flush; |
| spin_lock_init(&priv->lock); |
| return 0; |
| } |
| |
| void |
| nvc0_bar_dtor(struct nouveau_object *object) |
| { |
| struct nvc0_bar_priv *priv = (void *)object; |
| |
| nouveau_vm_ref(NULL, &priv->bar[1].vm, priv->bar[1].pgd); |
| nouveau_gpuobj_ref(NULL, &priv->bar[1].pgd); |
| nouveau_gpuobj_ref(NULL, &priv->bar[1].mem); |
| |
| if (priv->bar[0].vm) { |
| nouveau_gpuobj_ref(NULL, &priv->bar[0].vm->pgt[0].obj[0]); |
| nouveau_vm_ref(NULL, &priv->bar[0].vm, priv->bar[0].pgd); |
| } |
| nouveau_gpuobj_ref(NULL, &priv->bar[0].pgd); |
| nouveau_gpuobj_ref(NULL, &priv->bar[0].mem); |
| |
| nouveau_bar_destroy(&priv->base); |
| } |
| |
| int |
| nvc0_bar_init(struct nouveau_object *object) |
| { |
| struct nvc0_bar_priv *priv = (void *)object; |
| int ret; |
| |
| ret = nouveau_bar_init(&priv->base); |
| if (ret) |
| return ret; |
| |
| nv_mask(priv, 0x000200, 0x00000100, 0x00000000); |
| nv_mask(priv, 0x000200, 0x00000100, 0x00000100); |
| |
| nv_wr32(priv, 0x001704, 0x80000000 | priv->bar[1].mem->addr >> 12); |
| if (priv->bar[0].mem) |
| nv_wr32(priv, 0x001714, |
| 0xc0000000 | priv->bar[0].mem->addr >> 12); |
| return 0; |
| } |
| |
| struct nouveau_oclass |
| nvc0_bar_oclass = { |
| .handle = NV_SUBDEV(BAR, 0xc0), |
| .ofuncs = &(struct nouveau_ofuncs) { |
| .ctor = nvc0_bar_ctor, |
| .dtor = nvc0_bar_dtor, |
| .init = nvc0_bar_init, |
| .fini = _nouveau_bar_fini, |
| }, |
| }; |