linux/drivers/gpu/drm/nouveau/include/nvif/object.h
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   1/* SPDX-License-Identifier: MIT */
   2#ifndef __NVIF_OBJECT_H__
   3#define __NVIF_OBJECT_H__
   4
   5#include <nvif/os.h>
   6
   7struct nvif_sclass {
   8        s32 oclass;
   9        int minver;
  10        int maxver;
  11};
  12
  13struct 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
  24int  nvif_object_init(struct nvif_object *, u32 handle, s32 oclass, void *, u32,
  25                      struct nvif_object *);
  26void nvif_object_fini(struct nvif_object *);
  27int  nvif_object_ioctl(struct nvif_object *, void *, u32, void **);
  28int  nvif_object_sclass_get(struct nvif_object *, struct nvif_sclass **);
  29void nvif_object_sclass_put(struct nvif_sclass **);
  30u32  nvif_object_rd(struct nvif_object *, int, u64);
  31void nvif_object_wr(struct nvif_object *, int, u64, u32);
  32int  nvif_object_mthd(struct nvif_object *, u32, void *, u32);
  33int  nvif_object_map_handle(struct nvif_object *, void *, u32,
  34                            u64 *handle, u64 *length);
  35void nvif_object_unmap_handle(struct nvif_object *);
  36int  nvif_object_map(struct nvif_object *, void *, u32);
  37void 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
  73struct 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
 125