drivers/gpu/drm/nouveau/core/include/subdev/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 <core/object.h>
  29 #include <core/subdev.h>
  30 #include <core/device.h>
  31 #include <core/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_gpuobj;
  44 struct nouveau_mem;
  45
  46 struct nouveau_vma {
  47         struct list_head head;
  48         int refcount;
  49         struct nouveau_vm *vm;
  50         struct nouveau_mm_node *node;
  51         u64 offset;
  52         u32 access;
  53 };
  54
  55 struct nouveau_vm {
  56         struct nouveau_vmmgr *vmm;
  57         struct nouveau_mm mm;
  58         int refcount;
  59
  60         struct list_head pgd_list;
  61         atomic_t engref[NVDEV_SUBDEV_NR];
  62
  63         struct nouveau_vm_pgt *pgt;
  64         u32 fpde;
  65         u32 lpde;
  66 };
  67
  68 struct nouveau_vmmgr {
  69         struct nouveau_subdev base;
  70
  71         u64 limit;
  72         u8  dma_bits;
  73         u32 pgt_bits;
  74         u8  spg_shift;
  75         u8  lpg_shift;
  76
  77         int  (*create)(struct nouveau_vmmgr *, u64 offset, u64 length,
  78                        u64 mm_offset, struct nouveau_vm **);
  79
  80         void (*map_pgt)(struct nouveau_gpuobj *pgd, u32 pde,
  81                         struct nouveau_gpuobj *pgt[2]);
  82         void (*map)(struct nouveau_vma *, struct nouveau_gpuobj *,
  83                     struct nouveau_mem *, u32 pte, u32 cnt,
  84                     u64 phys, u64 delta);
  85         void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *,
  86                        struct nouveau_mem *, u32 pte, u32 cnt, dma_addr_t *);
  87         void (*unmap)(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt);
  88         void (*flush)(struct nouveau_vm *);
  89 };
  90
  91 static inline struct nouveau_vmmgr *
  92 nouveau_vmmgr(void *obj)
  93 {
  94         return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_VM];
  95 }
  96
  97 #define nouveau_vmmgr_create(p,e,o,i,f,d)                                      \
  98         nouveau_subdev_create((p), (e), (o), 0, (i), (f), (d))
  99 #define nouveau_vmmgr_destroy(p)                                               \
 100         nouveau_subdev_destroy(&(p)->base)
 101 #define nouveau_vmmgr_init(p)                                                  \
 102         nouveau_subdev_init(&(p)->base)
 103 #define nouveau_vmmgr_fini(p,s)                                                \
 104         nouveau_subdev_fini(&(p)->base, (s))
 105
 106 #define _nouveau_vmmgr_dtor _nouveau_subdev_dtor
 107 #define _nouveau_vmmgr_init _nouveau_subdev_init
 108 #define _nouveau_vmmgr_fini _nouveau_subdev_fini
 109
 110 extern struct nouveau_oclass nv04_vmmgr_oclass;
 111 extern struct nouveau_oclass nv41_vmmgr_oclass;
 112 extern struct nouveau_oclass nv44_vmmgr_oclass;
 113 extern struct nouveau_oclass nv50_vmmgr_oclass;
 114 extern struct nouveau_oclass nvc0_vmmgr_oclass;
 115
 116 int  nv04_vm_create(struct nouveau_vmmgr *, u64, u64, u64,
 117                     struct nouveau_vm **);
 118 void nv04_vmmgr_dtor(struct nouveau_object *);
 119
 120 /* nouveau_vm.c */
 121 int  nouveau_vm_create(struct nouveau_vmmgr *, u64 offset, u64 length,
 122                        u64 mm_offset, u32 block, struct nouveau_vm **);
 123 int  nouveau_vm_new(struct nouveau_device *, u64 offset, u64 length,
 124                     u64 mm_offset, struct nouveau_vm **);
 125 int  nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **,
 126                     struct nouveau_gpuobj *pgd);
 127 int  nouveau_vm_get(struct nouveau_vm *, u64 size, u32 page_shift,
 128                     u32 access, struct nouveau_vma *);
 129 void nouveau_vm_put(struct nouveau_vma *);
 130 void nouveau_vm_map(struct nouveau_vma *, struct nouveau_mem *);
 131 void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *);
 132 void nouveau_vm_unmap(struct nouveau_vma *);
 133 void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
 134 void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
 135                        struct nouveau_mem *);
 136 void nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
 137                      struct nouveau_mem *mem);
 138
 139 #endif