drivers/gpu/drm/nouveau/include/nvif/object.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NVIF_OBJECT_H__
   3 #define __NVIF_OBJECT_H__
   4
   5 #include <nvif/os.h>
   6
   7 struct nvif_sclass {
   8         s32 oclass;
   9         int minver;
  10         int maxver;
  11 };
  12
  13 struct nvif_object {
  14         struct nvif_client *client;
  15         u32 handle;
  16         s32 oclass;
  17         void *priv; /*XXX: hack */
  18         struct {
  19                 void __iomem *ptr;
  20                 u64 size;
  21         } map;
  22 };
  23
  24 int  nvif_object_init(struct nvif_object *, u32 handle, s32 oclass, void *, u32,
  25                       struct nvif_object *);
  26 void nvif_object_fini(struct nvif_object *);
  27 int  nvif_object_ioctl(struct nvif_object *, void *, u32, void **);
  28 int  nvif_object_sclass_get(struct nvif_object *, struct nvif_sclass **);
  29 void nvif_object_sclass_put(struct nvif_sclass **);
  30 u32  nvif_object_rd(struct nvif_object *, int, u64);
  31 void nvif_object_wr(struct nvif_object *, int, u64, u32);
  32 int  nvif_object_mthd(struct nvif_object *, u32, void *, u32);
  33 int  nvif_object_map_handle(struct nvif_object *, void *, u32,
  34                             u64 *handle, u64 *length);
  35 void nvif_object_unmap_handle(struct nvif_object *);
  36 int  nvif_object_map(struct nvif_object *, void *, u32);
  37 void nvif_object_unmap(struct nvif_object *);
  38
  39 #define nvif_handle(a) (unsigned long)(void *)(a)
  40 #define nvif_object(a) (a)->object
  41
  42 #define nvif_rd(a,f,b,c) ({                                                    \
  43         struct nvif_object *_object = (a);                                     \
  44         u32 _data;                                                             \
  45         if (likely(_object->map.ptr))                                          \
  46                 _data = f((u8 __iomem *)_object->map.ptr + (c));               \
  47         else                                                                   \
  48                 _data = nvif_object_rd(_object, (b), (c));                     \
  49         _data;                                                                 \
  50 })
  51 #define nvif_wr(a,f,b,c,d) ({                                                  \
  52         struct nvif_object *_object = (a);                                     \
  53         if (likely(_object->map.ptr))                                          \
  54                 f((d), (u8 __iomem *)_object->map.ptr + (c));                  \
  55         else                                                                   \
  56                 nvif_object_wr(_object, (b), (c), (d));                        \
  57 })
  58 #define nvif_rd08(a,b) ({ ((u8)nvif_rd((a), ioread8, 1, (b))); })
  59 #define nvif_rd16(a,b) ({ ((u16)nvif_rd((a), ioread16_native, 2, (b))); })
  60 #define nvif_rd32(a,b) ({ ((u32)nvif_rd((a), ioread32_native, 4, (b))); })
  61 #define nvif_wr08(a,b,c) nvif_wr((a), iowrite8, 1, (b), (u8)(c))
  62 #define nvif_wr16(a,b,c) nvif_wr((a), iowrite16_native, 2, (b), (u16)(c))
  63 #define nvif_wr32(a,b,c) nvif_wr((a), iowrite32_native, 4, (b), (u32)(c))
  64 #define nvif_mask(a,b,c,d) ({                                                  \
  65         struct nvif_object *__object = (a);                                    \
  66         u32 _addr = (b), _data = nvif_rd32(__object, _addr);                   \
  67         nvif_wr32(__object, _addr, (_data & ~(c)) | (d));                      \
  68         _data;                                                                 \
  69 })
  70
  71 #define nvif_mthd(a,b,c,d) nvif_object_mthd((a), (b), (c), (d))
  72
  73 struct nvif_mclass {
  74         s32 oclass;
  75         int version;
  76 };
  77
  78 #define nvif_mclass(o,m) ({                                                    \
  79         struct nvif_object *object = (o);                                      \
  80         struct nvif_sclass *sclass;                                            \
  81         typeof(m[0]) *mclass = (m);                                            \
  82         int ret = -ENODEV;                                                     \
  83         int cnt, i, j;                                                         \
  84                                                                                \
  85         cnt = nvif_object_sclass_get(object, &sclass);                         \
  86         if (cnt >= 0) {                                                        \
  87                 for (i = 0; ret < 0 && mclass[i].oclass; i++) {                \
  88                         for (j = 0; j < cnt; j++) {                            \
  89                                 if (mclass[i].oclass  == sclass[j].oclass &&   \
  90                                     mclass[i].version >= sclass[j].minver &&   \
  91                                     mclass[i].version <= sclass[j].maxver) {   \
  92                                         ret = i;                               \
  93                                         break;                                 \
  94                                 }                                              \
  95                         }                                                      \
  96                 }                                                              \
  97                 nvif_object_sclass_put(&sclass);                               \
  98         }                                                                      \
  99         ret;                                                                   \
 100 })
 101
 102 #define nvif_sclass(o,m,u) ({                                                  \
 103         const typeof(m[0]) *_mclass = (m);                                     \
 104         s32 _oclass = (u);                                                     \
 105         int _cid;                                                              \
 106         if (_oclass) {                                                         \
 107                 for (_cid = 0; _mclass[_cid].oclass; _cid++) {                 \
 108                         if (_mclass[_cid].oclass == _oclass)                   \
 109                                 break;                                         \
 110                 }                                                              \
 111                 _cid = _mclass[_cid].oclass ? _cid : -ENOSYS;                  \
 112         } else {                                                               \
 113                 _cid = nvif_mclass((o), _mclass);                              \
 114         }                                                                      \
 115         _cid;                                                                  \
 116 })
 117
 118 /*XXX*/
 119 #include <core/object.h>
 120 #define nvxx_object(a) ({                                                      \
 121         struct nvif_object *_object = (a);                                     \
 122         (struct nvkm_object *)_object->priv;                                   \
 123 })
 124 #endif