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

   1 #ifndef __NVKM_FBRAM_FUC_H__
   2 #define __NVKM_FBRAM_FUC_H__
   3 #include <subdev/fb.h>
   4 #include <subdev/pmu.h>
   5
   6 struct ramfuc {
   7         struct nvkm_memx *memx;
   8         struct nvkm_fb *fb;
   9         int sequence;
  10 };
  11
  12 struct ramfuc_reg {
  13         int sequence;
  14         bool force;
  15         u32 addr;
  16         u32 stride; /* in bytes */
  17         u32 mask;
  18         u32 data;
  19 };
  20
  21 static inline struct ramfuc_reg
  22 ramfuc_stride(u32 addr, u32 stride, u32 mask)
  23 {
  24         return (struct ramfuc_reg) {
  25                 .sequence = 0,
  26                 .addr = addr,
  27                 .stride = stride,
  28                 .mask = mask,
  29                 .data = 0xdeadbeef,
  30         };
  31 }
  32
  33 static inline struct ramfuc_reg
  34 ramfuc_reg2(u32 addr1, u32 addr2)
  35 {
  36         return (struct ramfuc_reg) {
  37                 .sequence = 0,
  38                 .addr = addr1,
  39                 .stride = addr2 - addr1,
  40                 .mask = 0x3,
  41                 .data = 0xdeadbeef,
  42         };
  43 }
  44
  45 static noinline struct ramfuc_reg
  46 ramfuc_reg(u32 addr)
  47 {
  48         return (struct ramfuc_reg) {
  49                 .sequence = 0,
  50                 .addr = addr,
  51                 .stride = 0,
  52                 .mask = 0x1,
  53                 .data = 0xdeadbeef,
  54         };
  55 }
  56
  57 static inline int
  58 ramfuc_init(struct ramfuc *ram, struct nvkm_fb *fb)
  59 {
  60         int ret = nvkm_memx_init(fb->subdev.device->pmu, &ram->memx);
  61         if (ret)
  62                 return ret;
  63
  64         ram->sequence++;
  65         ram->fb = fb;
  66         return 0;
  67 }
  68
  69 static inline int
  70 ramfuc_exec(struct ramfuc *ram, bool exec)
  71 {
  72         int ret = 0;
  73         if (ram->fb) {
  74                 ret = nvkm_memx_fini(&ram->memx, exec);
  75                 ram->fb = NULL;
  76         }
  77         return ret;
  78 }
  79
  80 static inline u32
  81 ramfuc_rd32(struct ramfuc *ram, struct ramfuc_reg *reg)
  82 {
  83         struct nvkm_device *device = ram->fb->subdev.device;
  84         if (reg->sequence != ram->sequence)
  85                 reg->data = nvkm_rd32(device, reg->addr);
  86         return reg->data;
  87 }
  88
  89 static inline void
  90 ramfuc_wr32(struct ramfuc *ram, struct ramfuc_reg *reg, u32 data)
  91 {
  92         unsigned int mask, off = 0;
  93
  94         reg->sequence = ram->sequence;
  95         reg->data = data;
  96
  97         for (mask = reg->mask; mask > 0; mask = (mask & ~1) >> 1) {
  98                 if (mask & 1)
  99                         nvkm_memx_wr32(ram->memx, reg->addr+off, reg->data);
 100                 off += reg->stride;
 101         }
 102 }
 103
 104 static inline void
 105 ramfuc_nuke(struct ramfuc *ram, struct ramfuc_reg *reg)
 106 {
 107         reg->force = true;
 108 }
 109
 110 static inline u32
 111 ramfuc_mask(struct ramfuc *ram, struct ramfuc_reg *reg, u32 mask, u32 data)
 112 {
 113         u32 temp = ramfuc_rd32(ram, reg);
 114         if (temp != ((temp & ~mask) | data) || reg->force) {
 115                 ramfuc_wr32(ram, reg, (temp & ~mask) | data);
 116                 reg->force = false;
 117         }
 118         return temp;
 119 }
 120
 121 static inline void
 122 ramfuc_wait(struct ramfuc *ram, u32 addr, u32 mask, u32 data, u32 nsec)
 123 {
 124         nvkm_memx_wait(ram->memx, addr, mask, data, nsec);
 125 }
 126
 127 static inline void
 128 ramfuc_nsec(struct ramfuc *ram, u32 nsec)
 129 {
 130         nvkm_memx_nsec(ram->memx, nsec);
 131 }
 132
 133 static inline void
 134 ramfuc_wait_vblank(struct ramfuc *ram)
 135 {
 136         nvkm_memx_wait_vblank(ram->memx);
 137 }
 138
 139 static inline void
 140 ramfuc_train(struct ramfuc *ram)
 141 {
 142         nvkm_memx_train(ram->memx);
 143 }
 144
 145 static inline int
 146 ramfuc_train_result(struct nvkm_fb *fb, u32 *result, u32 rsize)
 147 {
 148         return nvkm_memx_train_result(fb->subdev.device->pmu, result, rsize);
 149 }
 150
 151 static inline void
 152 ramfuc_block(struct ramfuc *ram)
 153 {
 154         nvkm_memx_block(ram->memx);
 155 }
 156
 157 static inline void
 158 ramfuc_unblock(struct ramfuc *ram)
 159 {
 160         nvkm_memx_unblock(ram->memx);
 161 }
 162
 163 #define ram_init(s,p)        ramfuc_init(&(s)->base, (p))
 164 #define ram_exec(s,e)        ramfuc_exec(&(s)->base, (e))
 165 #define ram_have(s,r)        ((s)->r_##r.addr != 0x000000)
 166 #define ram_rd32(s,r)        ramfuc_rd32(&(s)->base, &(s)->r_##r)
 167 #define ram_wr32(s,r,d)      ramfuc_wr32(&(s)->base, &(s)->r_##r, (d))
 168 #define ram_nuke(s,r)        ramfuc_nuke(&(s)->base, &(s)->r_##r)
 169 #define ram_mask(s,r,m,d)    ramfuc_mask(&(s)->base, &(s)->r_##r, (m), (d))
 170 #define ram_wait(s,r,m,d,n)  ramfuc_wait(&(s)->base, (r), (m), (d), (n))
 171 #define ram_nsec(s,n)        ramfuc_nsec(&(s)->base, (n))
 172 #define ram_wait_vblank(s)   ramfuc_wait_vblank(&(s)->base)
 173 #define ram_train(s)         ramfuc_train(&(s)->base)
 174 #define ram_train_result(s,r,l) ramfuc_train_result((s), (r), (l))
 175 #define ram_block(s)         ramfuc_block(&(s)->base)
 176 #define ram_unblock(s)       ramfuc_unblock(&(s)->base)
 177 #endif