LXR linux/drivers/gpu/drm/nouveau/nouveau

   1#ifndef __NOUVEAU_GRCTX_H__
   2#define __NOUVEAU_GRCTX_H__
   3
   4struct nouveau_grctx {
   5        struct drm_device *dev;
   6
   7        enum {
   8                NOUVEAU_GRCTX_PROG,
   9                NOUVEAU_GRCTX_VALS
  10        } mode;
  11        void *data;
  12
  13        uint32_t ctxprog_max;
  14        uint32_t ctxprog_len;
  15        uint32_t ctxprog_reg;
  16        int      ctxprog_label[32];
  17        uint32_t ctxvals_pos;
  18        uint32_t ctxvals_base;
  19};
  20
  21#ifdef CP_CTX
  22static inline void
  23cp_out(struct nouveau_grctx *ctx, uint32_t inst)
  24{
  25        uint32_t *ctxprog = ctx->data;
  26
  27        if (ctx->mode != NOUVEAU_GRCTX_PROG)
  28                return;
  29
  30        BUG_ON(ctx->ctxprog_len == ctx->ctxprog_max);
  31        ctxprog[ctx->ctxprog_len++] = inst;
  32}
  33
  34static inline void
  35cp_lsr(struct nouveau_grctx *ctx, uint32_t val)
  36{
  37        cp_out(ctx, CP_LOAD_SR | val);
  38}
  39
  40static inline void
  41cp_ctx(struct nouveau_grctx *ctx, uint32_t reg, uint32_t length)
  42{
  43        ctx->ctxprog_reg = (reg - 0x00400000) >> 2;
  44
  45        ctx->ctxvals_base = ctx->ctxvals_pos;
  46        ctx->ctxvals_pos = ctx->ctxvals_base + length;
  47
  48        if (length > (CP_CTX_COUNT >> CP_CTX_COUNT_SHIFT)) {
  49                cp_lsr(ctx, length);
  50                length = 0;
  51        }
  52
  53        cp_out(ctx, CP_CTX | (length << CP_CTX_COUNT_SHIFT) | ctx->ctxprog_reg);
  54}
  55
  56static inline void
  57cp_name(struct nouveau_grctx *ctx, int name)
  58{
  59        uint32_t *ctxprog = ctx->data;
  60        int i;
  61
  62        if (ctx->mode != NOUVEAU_GRCTX_PROG)
  63                return;
  64
  65        ctx->ctxprog_label[name] = ctx->ctxprog_len;
  66        for (i = 0; i < ctx->ctxprog_len; i++) {
  67                if ((ctxprog[i] & 0xfff00000) != 0xff400000)
  68                        continue;
  69                if ((ctxprog[i] & CP_BRA_IP) != ((name) << CP_BRA_IP_SHIFT))
  70                        continue;
  71                ctxprog[i] = (ctxprog[i] & 0x00ff00ff) |
  72                             (ctx->ctxprog_len << CP_BRA_IP_SHIFT);
  73        }
  74}
  75
  76static inline void
  77_cp_bra(struct nouveau_grctx *ctx, u32 mod, int flag, int state, int name)
  78{
  79        int ip = 0;
  80
  81        if (mod != 2) {
  82                ip = ctx->ctxprog_label[name] << CP_BRA_IP_SHIFT;
  83                if (ip == 0)
  84                        ip = 0xff000000 | (name << CP_BRA_IP_SHIFT);
  85        }
  86
  87        cp_out(ctx, CP_BRA | (mod << 18) | ip | flag |
  88                    (state ? 0 : CP_BRA_IF_CLEAR));
  89}
  90#define cp_bra(c,f,s,n) _cp_bra((c), 0, CP_FLAG_##f, CP_FLAG_##f##_##s, n)
  91#ifdef CP_BRA_MOD
  92#define cp_cal(c,f,s,n) _cp_bra((c), 1, CP_FLAG_##f, CP_FLAG_##f##_##s, n)
  93#define cp_ret(c,f,s) _cp_bra((c), 2, CP_FLAG_##f, CP_FLAG_##f##_##s, 0)
  94#endif
  95
  96static inline void
  97_cp_wait(struct nouveau_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
 103static inline void
 104_cp_set(struct nouveau_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
 110static inline void
 111cp_pos(struct nouveau_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
 120static inline void
 121gr_def(struct nouveau_grctx *ctx, uint32_t reg, uint32_t val)
 122{
 123        if (ctx->mode != NOUVEAU_GRCTX_VALS)
 124                return;
 125
 126        reg = (reg - 0x00400000) / 4;
 127        reg = (reg - ctx->ctxprog_reg) + ctx->ctxvals_base;
 128
 129        nv_wo32(ctx->data, reg * 4, val);
 130}
 131#endif
 132
 133#endif
 134