drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxnv40.h

   1 /* SPDX-License-Identifier: MIT */
   2 #ifndef __NVKM_GRCTX_H__
   3 #define __NVKM_GRCTX_H__
   4 #include <core/gpuobj.h>
   5
   6 struct nvkm_grctx {
   7         struct nvkm_device *device;
   8
   9         enum {
  10                 NVKM_GRCTX_PROG,
  11                 NVKM_GRCTX_VALS
  12         } mode;
  13         u32 *ucode;
  14         struct nvkm_gpuobj *data;
  15
  16         u32 ctxprog_max;
  17         u32 ctxprog_len;
  18         u32 ctxprog_reg;
  19         int ctxprog_label[32];
  20         u32 ctxvals_pos;
  21         u32 ctxvals_base;
  22 };
  23
  24 static inline void
  25 cp_out(struct nvkm_grctx *ctx, u32 inst)
  26 {
  27         u32 *ctxprog = ctx->ucode;
  28
  29         if (ctx->mode != NVKM_GRCTX_PROG)
  30                 return;
  31
  32         BUG_ON(ctx->ctxprog_len == ctx->ctxprog_max);
  33         ctxprog[ctx->ctxprog_len++] = inst;
  34 }
  35
  36 static inline void
  37 cp_lsr(struct nvkm_grctx *ctx, u32 val)
  38 {
  39         cp_out(ctx, CP_LOAD_SR | val);
  40 }
  41
  42 static inline void
  43 cp_ctx(struct nvkm_grctx *ctx, u32 reg, u32 length)
  44 {
  45         ctx->ctxprog_reg = (reg - 0x00400000) >> 2;
  46
  47         ctx->ctxvals_base = ctx->ctxvals_pos;
  48         ctx->ctxvals_pos = ctx->ctxvals_base + length;
  49
  50         if (length > (CP_CTX_COUNT >> CP_CTX_COUNT_SHIFT)) {
  51                 cp_lsr(ctx, length);
  52                 length = 0;
  53         }
  54
  55         cp_out(ctx, CP_CTX | (length << CP_CTX_COUNT_SHIFT) | ctx->ctxprog_reg);
  56 }
  57
  58 static inline void
  59 cp_name(struct nvkm_grctx *ctx, int name)
  60 {
  61         u32 *ctxprog = ctx->ucode;
  62         int i;
  63
  64         if (ctx->mode != NVKM_GRCTX_PROG)
  65                 return;
  66
  67         ctx->ctxprog_label[name] = ctx->ctxprog_len;
  68         for (i = 0; i < ctx->ctxprog_len; i++) {
  69                 if ((ctxprog[i] & 0xfff00000) != 0xff400000)
  70                         continue;
  71                 if ((ctxprog[i] & CP_BRA_IP) != ((name) << CP_BRA_IP_SHIFT))
  72                         continue;
  73                 ctxprog[i] = (ctxprog[i] & 0x00ff00ff) |
  74                              (ctx->ctxprog_len << CP_BRA_IP_SHIFT);
  75         }
  76 }
  77
  78 static inline void
  79 _cp_bra(struct nvkm_grctx *ctx, u32 mod, int flag, int state, int name)
  80 {
  81         int ip = 0;
  82
  83         if (mod != 2) {
  84                 ip = ctx->ctxprog_label[name] << CP_BRA_IP_SHIFT;
  85                 if (ip == 0)
  86                         ip = 0xff000000 | (name << CP_BRA_IP_SHIFT);
  87         }
  88
  89         cp_out(ctx, CP_BRA | (mod << 18) | ip | flag |
  90                     (state ? 0 : CP_BRA_IF_CLEAR));
  91 }
  92 #define cp_bra(c, f, s, n) _cp_bra((c), 0, CP_FLAG_##f, CP_FLAG_##f##_##s, n)
  93 #define cp_cal(c, f, s, n) _cp_bra((c), 1, CP_FLAG_##f, CP_FLAG_##f##_##s, n)
  94 #define cp_ret(c, f, s) _cp_bra((c), 2, CP_FLAG_##f, CP_FLAG_##f##_##s, 0)
  95
  96 static inline void
  97 _cp_wait(struct nvkm_grctx *ctx, int flag, int state)
  98 {
  99         cp_out(ctx, CP_WAIT | flag | (state ? CP_WAIT_SET : 0));
 100 }
 101 #define cp_wait(c, f, s) _cp_wait((c), CP_FLAG_##f, CP_FLAG_##f##_##s)
 102
 103 static inline void
 104 _cp_set(struct nvkm_grctx *ctx, int flag, int state)
 105 {
 106         cp_out(ctx, CP_SET | flag | (state ? CP_SET_1 : 0));
 107 }
 108 #define cp_set(c, f, s) _cp_set((c), CP_FLAG_##f, CP_FLAG_##f##_##s)
 109
 110 static inline void
 111 cp_pos(struct nvkm_grctx *ctx, int offset)
 112 {
 113         ctx->ctxvals_pos = offset;
 114         ctx->ctxvals_base = ctx->ctxvals_pos;
 115
 116         cp_lsr(ctx, ctx->ctxvals_pos);
 117         cp_out(ctx, CP_SET_CONTEXT_POINTER);
 118 }
 119
 120 static inline void
 121 gr_def(struct nvkm_grctx *ctx, u32 reg, u32 val)
 122 {
 123         if (ctx->mode != NVKM_GRCTX_VALS)
 124                 return;
 125
 126         reg = (reg - 0x00400000) / 4;
 127         reg = (reg - ctx->ctxprog_reg) + ctx->ctxvals_base;
 128
 129         nvkm_wo32(ctx->data, reg * 4, val);
 130 }
 131 #endif