drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramfuc.h

   1 #ifndef __NVKM_FBRAM_FUC_H__
   2 #define __NVKM_FBRAM_FUC_H__
   3 #include <subdev/pmu.h>
   4
   5 struct ramfuc {
   6         struct nvkm_memx *memx;
   7         struct nvkm_fb *pfb;
   8         int sequence;
   9 };
  10
  11 struct ramfuc_reg {
  12         int sequence;
  13         bool force;
  14         u32 addr;
  15         u32 stride; /* in bytes */
  16         u32 mask;
  17         u32 data;
  18 };
  19
  20 static inline struct ramfuc_reg
  21 ramfuc_stride(u32 addr, u32 stride, u32 mask)
  22 {
  23         return (struct ramfuc_reg) {
  24                 .sequence = 0,
  25                 .addr = addr,
  26                 .stride = stride,
  27                 .mask = mask,
  28                 .data = 0xdeadbeef,
  29         };
  30 }
  31
  32 static inline struct ramfuc_reg
  33 ramfuc_reg2(u32 addr1, u32 addr2)
  34 {
  35         return (struct ramfuc_reg) {
  36                 .sequence = 0,
  37                 .addr = addr1,
  38                 .stride = addr2 - addr1,
  39                 .mask = 0x3,
  40                 .data = 0xdeadbeef,
  41         };
  42 }
  43
  44 static noinline struct ramfuc_reg
  45 ramfuc_reg(u32 addr)
  46 {
  47         return (struct ramfuc_reg) {
  48                 .sequence = 0,
  49                 .addr = addr,
  50                 .stride = 0,
  51                 .mask = 0x1,
  52                 .data = 0xdeadbeef,
  53         };
  54 }
  55
  56 static inline int
  57 ramfuc_init(struct ramfuc *ram, struct nvkm_fb *pfb)
  58 {
  59         struct nvkm_pmu *pmu = nvkm_pmu(pfb);
  60         int ret;
  61
  62         ret = nvkm_memx_init(pmu, &ram->memx);
  63         if (ret)
  64                 return ret;
  65
  66         ram->sequence++;
  67         ram->pfb = pfb;
  68         return 0;
  69 }
  70
  71 static inline int
  72 ramfuc_exec(struct ramfuc *ram, bool exec)
  73 {
  74         int ret = 0;
  75         if (ram->pfb) {
  76                 ret = nvkm_memx_fini(&ram->memx, exec);
  77                 ram->pfb = NULL;
  78         }
  79         return ret;
  80 }
  81
  82 static inline u32
  83 ramfuc_rd32(struct ramfuc *ram, struct ramfuc_reg *reg)
  84 {
  85         if (reg->sequence != ram->sequence)
  86                 reg->data = nv_rd32(ram->pfb, reg->addr);
  87         return reg->data;
  88 }
  89
  90 static inline void
  91 ramfuc_wr32(struct ramfuc *ram, struct ramfuc_reg *reg, u32 data)
  92 {
  93         unsigned int mask, off = 0;
  94
  95         reg->sequence = ram->sequence;
  96         reg->data = data;
  97
  98         for (mask = reg->mask; mask > 0; mask = (mask & ~1) >> 1) {
  99                 if (mask & 1)
 100                         nvkm_memx_wr32(ram->memx, reg->addr+off, reg->data);
 101                 off += reg->stride;
 102         }
 103 }
 104
 105 static inline void
 106 ramfuc_nuke(struct ramfuc *ram, struct ramfuc_reg *reg)
 107 {
 108         reg->force = true;
 109 }
 110
 111 static inline u32
 112 ramfuc_mask(struct ramfuc *ram, struct ramfuc_reg *reg, u32 mask, u32 data)
 113 {
 114         u32 temp = ramfuc_rd32(ram, reg);
 115         if (temp != ((temp & ~mask) | data) || reg->force) {
 116                 ramfuc_wr32(ram, reg, (temp & ~mask) | data);
 117                 reg->force = false;
 118         }
 119         return temp;
 120 }
 121
 122 static inline void
 123 ramfuc_wait(struct ramfuc *ram, u32 addr, u32 mask, u32 data, u32 nsec)
 124 {
 125         nvkm_memx_wait(ram->memx, addr, mask, data, nsec);
 126 }
 127
 128 static inline void
 129 ramfuc_nsec(struct ramfuc *ram, u32 nsec)
 130 {
 131         nvkm_memx_nsec(ram->memx, nsec);
 132 }
 133
 134 static inline void
 135 ramfuc_wait_vblank(struct ramfuc *ram)
 136 {
 137         nvkm_memx_wait_vblank(ram->memx);
 138 }
 139
 140 static inline void
 141 ramfuc_train(struct ramfuc *ram)
 142 {
 143         nvkm_memx_train(ram->memx);
 144 }
 145
 146 static inline int
 147 ramfuc_train_result(struct nvkm_fb *pfb, u32 *result, u32 rsize)
 148 {
 149         struct nvkm_pmu *pmu = nvkm_pmu(pfb);
 150
 151         return nvkm_memx_train_result(pmu, result, rsize);
 152 }
 153
 154 static inline void
 155 ramfuc_block(struct ramfuc *ram)
 156 {
 157         nvkm_memx_block(ram->memx);
 158 }
 159
 160 static inline void
 161 ramfuc_unblock(struct ramfuc *ram)
 162 {
 163         nvkm_memx_unblock(ram->memx);
 164 }
 165
 166 #define ram_init(s,p)        ramfuc_init(&(s)->base, (p))
 167 #define ram_exec(s,e)        ramfuc_exec(&(s)->base, (e))
 168 #define ram_have(s,r)        ((s)->r_##r.addr != 0x000000)
 169 #define ram_rd32(s,r)        ramfuc_rd32(&(s)->base, &(s)->r_##r)
 170 #define ram_wr32(s,r,d)      ramfuc_wr32(&(s)->base, &(s)->r_##r, (d))
 171 #define ram_nuke(s,r)        ramfuc_nuke(&(s)->base, &(s)->r_##r)
 172 #define ram_mask(s,r,m,d)    ramfuc_mask(&(s)->base, &(s)->r_##r, (m), (d))
 173 #define ram_wait(s,r,m,d,n)  ramfuc_wait(&(s)->base, (r), (m), (d), (n))
 174 #define ram_nsec(s,n)        ramfuc_nsec(&(s)->base, (n))
 175 #define ram_wait_vblank(s)   ramfuc_wait_vblank(&(s)->base)
 176 #define ram_train(s)         ramfuc_train(&(s)->base)
 177 #define ram_train_result(s,r,l) ramfuc_train_result((s), (r), (l))
 178 #define ram_block(s)         ramfuc_block(&(s)->base)
 179 #define ram_unblock(s)       ramfuc_unblock(&(s)->base)
 180 #endif