drivers/gpu/drm/nouveau/nouveau_vm.h

   1 /*
   2  * Copyright 2010 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #ifndef __NOUVEAU_VM_H__
  26 #define __NOUVEAU_VM_H__
  27
  28 #include "drmP.h"
  29
  30 #include "nouveau_drv.h"
  31 #include "nouveau_mm.h"
  32
  33 struct nouveau_vm_pgt {
  34         struct nouveau_gpuobj *obj[2];
  35         u32 refcount[2];
  36 };
  37
  38 struct nouveau_vm_pgd {
  39         struct list_head head;
  40         struct nouveau_gpuobj *obj;
  41 };
  42
  43 struct nouveau_vma {
  44         struct list_head head;
  45         int refcount;
  46         struct nouveau_vm *vm;
  47         struct nouveau_mm_node *node;
  48         u64 offset;
  49         u32 access;
  50 };
  51
  52 struct nouveau_vm {
  53         struct drm_device *dev;
  54         struct nouveau_mm mm;
  55         int refcount;
  56
  57         struct list_head pgd_list;
  58         atomic_t engref[16];
  59
  60         struct nouveau_vm_pgt *pgt;
  61         u32 fpde;
  62         u32 lpde;
  63
  64         u32 pgt_bits;
  65         u8  spg_shift;
  66         u8  lpg_shift;
  67
  68         void (*map_pgt)(struct nouveau_gpuobj *pgd, u32 pde,
  69                         struct nouveau_gpuobj *pgt[2]);
  70         void (*map)(struct nouveau_vma *, struct nouveau_gpuobj *,
  71                     struct nouveau_mem *, u32 pte, u32 cnt,
  72                     u64 phys, u64 delta);
  73         void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *,
  74                        struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
  75         void (*unmap)(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt);
  76         void (*flush)(struct nouveau_vm *);
  77 };
  78
  79 /* nouveau_vm.c */
  80 int  nouveau_vm_new(struct drm_device *, u64 offset, u64 length, u64 mm_offset,
  81                     struct nouveau_vm **);
  82 int  nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **,
  83                     struct nouveau_gpuobj *pgd);
  84 int  nouveau_vm_get(struct nouveau_vm *, u64 size, u32 page_shift,
  85                     u32 access, struct nouveau_vma *);
  86 void nouveau_vm_put(struct nouveau_vma *);
  87 void nouveau_vm_map(struct nouveau_vma *, struct nouveau_mem *);
  88 void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *);
  89 void nouveau_vm_unmap(struct nouveau_vma *);
  90 void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
  91 void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
  92                        struct nouveau_mem *);
  93
  94 /* nv50_vm.c */
  95 void nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,
  96                      struct nouveau_gpuobj *pgt[2]);
  97 void nv50_vm_map(struct nouveau_vma *, struct nouveau_gpuobj *,
  98                  struct nouveau_mem *, u32 pte, u32 cnt, u64 phys, u64 delta);
  99 void nv50_vm_map_sg(struct nouveau_vma *, struct nouveau_gpuobj *,
 100                     struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
 101 void nv50_vm_unmap(struct nouveau_gpuobj *, u32 pte, u32 cnt);
 102 void nv50_vm_flush(struct nouveau_vm *);
 103 void nv50_vm_flush_engine(struct drm_device *, int engine);
 104
 105 /* nvc0_vm.c */
 106 void nvc0_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,
 107                      struct nouveau_gpuobj *pgt[2]);
 108 void nvc0_vm_map(struct nouveau_vma *, struct nouveau_gpuobj *,
 109                  struct nouveau_mem *, u32 pte, u32 cnt, u64 phys, u64 delta);
 110 void nvc0_vm_map_sg(struct nouveau_vma *, struct nouveau_gpuobj *,
 111                     struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
 112 void nvc0_vm_unmap(struct nouveau_gpuobj *, u32 pte, u32 cnt);
 113 void nvc0_vm_flush(struct nouveau_vm *);
 114
 115 #endif