LXR linux/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
  33struct nouveau_vm_pgt {
  34        struct nouveau_gpuobj *obj[2];
  35        u32 refcount[2];
  36};
  37
  38struct nouveau_vm_pgd {
  39        struct list_head head;
  40        struct nouveau_gpuobj *obj;
  41};
  42
  43struct nouveau_gpuobj;
  44struct nouveau_mem;
  45
  46struct 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
  55struct nouveau_vm {
  56        struct nouveau_vmmgr *vmm;
  57        struct nouveau_mm mm;
  58        struct kref 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
  68struct 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
  91static inline struct nouveau_vmmgr *
  92nouveau_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
 110extern struct nouveau_oclass nv04_vmmgr_oclass;
 111extern struct nouveau_oclass nv41_vmmgr_oclass;
 112extern struct nouveau_oclass nv44_vmmgr_oclass;
 113extern struct nouveau_oclass nv50_vmmgr_oclass;
 114extern struct nouveau_oclass nvc0_vmmgr_oclass;
 115
 116int  nv04_vm_create(struct nouveau_vmmgr *, u64, u64, u64,
 117                    struct nouveau_vm **);
 118void nv04_vmmgr_dtor(struct nouveau_object *);
 119
 120/* nouveau_vm.c */
 121int  nouveau_vm_create(struct nouveau_vmmgr *, u64 offset, u64 length,
 122                       u64 mm_offset, u32 block, struct nouveau_vm **);
 123int  nouveau_vm_new(struct nouveau_device *, u64 offset, u64 length,
 124                    u64 mm_offset, struct nouveau_vm **);
 125int  nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **,
 126                    struct nouveau_gpuobj *pgd);
 127int  nouveau_vm_get(struct nouveau_vm *, u64 size, u32 page_shift,
 128                    u32 access, struct nouveau_vma *);
 129void nouveau_vm_put(struct nouveau_vma *);
 130void nouveau_vm_map(struct nouveau_vma *, struct nouveau_mem *);
 131void nouveau_vm_map_at(struct nouveau_vma *, u64 offset, struct nouveau_mem *);
 132void nouveau_vm_unmap(struct nouveau_vma *);
 133void nouveau_vm_unmap_at(struct nouveau_vma *, u64 offset, u64 length);
 134void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
 135                       struct nouveau_mem *);
 136void nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
 137                     struct nouveau_mem *mem);
 138
 139#endif
 140