diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h new file mode 100644 index 000000000000..2c3b29967ea4 --- /dev/null +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h @@ -0,0 +1,135 @@ +/* + * 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 + */ + +#ifndef __NOUVEAU_MMU_H__ +#define __NOUVEAU_MMU_H__ + +#include <core/object.h> +#include <core/subdev.h> +#include <core/device.h> +#include <core/mm.h> + +struct nouveau_vm_pgt { + struct nouveau_gpuobj *obj[2]; + u32 refcount[2]; +}; + +struct nouveau_vm_pgd { + struct list_head head; + struct nouveau_gpuobj *obj; +}; + +struct nouveau_gpuobj; +struct nouveau_mem; + +struct nouveau_vma { + struct list_head head; + int refcount; + struct nouveau_vm *vm; + struct nouveau_mm_node *node; + u64 offset; + u32 access; +}; + +struct nouveau_vm { + struct nouveau_mmu *mmu; + struct nouveau_mm mm; + struct kref refcount; + + struct list_head pgd_list; + atomic_t engref[NVDEV_SUBDEV_NR]; + + struct nouveau_vm_pgt *pgt; + u32 fpde; + u32 lpde; +}; + +struct nouveau_mmu { + struct nouveau_subdev base; + + u64 limit; + u8 dma_bits; + u32 pgt_bits; + u8 spg_shift; + u8 lpg_shift; + + int (*create)(struct nouveau_mmu *, u64 offset, u64 length, + u64 mm_offset, struct nouveau_vm **); + + void (*map_pgt)(struct nouveau_gpuobj *pgd, u32 pde, + struct nouveau_gpuobj *pgt[2]); + void (*map)(struct nouveau_vma *, struct nouveau_gpuobj *, + struct nouveau_mem *, u32 pte, u32 cnt, + u64 phys, u64 delta); + void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *, + struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *); + void (*unmap)(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt); + void (*flush)(struct nouveau_vm *); +}; + +static inline struct nouveau_mmu * +nouveau_mmu(void *obj) +{ + return (void *)nouveau_subdev(obj, NVDEV_SUBDEV_MMU); +} + +#define nouveau_mmu_create(p,e,o,i,f,d) \ + nouveau_subdev_create((p), (e), (o), 0, (i), (f), (d)) +#define nouveau_mmu_destroy(p) \ + nouveau_subdev_destroy(&(p)->base) +#define nouveau_mmu_init(p) \ + nouveau_subdev_init(&(p)->base) +#define nouveau_mmu_fini(p,s) \ + nouveau_subdev_fini(&(p)->base, (s)) + +#define _nouveau_mmu_dtor _nouveau_subdev_dtor +#define _nouveau_mmu_init _nouveau_subdev_init +#define _nouveau_mmu_fini _nouveau_subdev_fini + +extern struct nouveau_oclass nv04_mmu_oclass; +extern struct nouveau_oclass nv41_mmu_oclass; +extern struct nouveau_oclass nv44_mmu_oclass; +extern struct nouveau_oclass nv50_mmu_oclass; +extern struct nouveau_oclass nvc0_mmu_oclass; + +int nv04_vm_create(struct nouveau_mmu *, u64, u64, u64, + struct nouveau_vm **); +void nv04_mmu_dtor(struct nouveau_object *); + +/* nouveau_vm.c */ +int nouveau_vm_create(struct nouveau_mmu *, u64 offset, u64 length, + u64 mm_offset, u32 block, struct nouveau_vm **); +int nouveau_vm_new(struct nouveau_device *, u64 offset, u64 length, + u64 mm_offset, struct nouveau_vm **); +int nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **, + struct nouveau_gpuobj *pgd); +int nouveau_vm_get(struct nouveau_vm *, u64 size, u32 page_shift, + u32 access, struct nouveau_vma *); +void nouveau_vm_put(struct nouveau_vma *); +void nouveau_vm_map(struct nouveau_vma *, struct nouveau_mem *); +void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *); +void nouveau_vm_unmap(struct nouveau_vma *); +void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length); + +#endif |