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      1 
      2 #include "i915_sw_winsys.h"
      3 #include "i915/i915_batchbuffer.h"
      4 #include "i915/i915_debug.h"
      5 #include "util/u_memory.h"
      6 
      7 #define BATCH_RESERVED 16
      8 
      9 #define INTEL_DEFAULT_RELOCS 100
     10 #define INTEL_MAX_RELOCS 400
     11 
     12 #define INTEL_BATCH_NO_CLIPRECTS 0x1
     13 #define INTEL_BATCH_CLIPRECTS    0x2
     14 
     15 #define INTEL_ALWAYS_FLUSH
     16 
     17 struct i915_sw_batchbuffer
     18 {
     19    struct i915_winsys_batchbuffer base;
     20 
     21    size_t actual_size;
     22 };
     23 
     24 static INLINE struct i915_sw_batchbuffer *
     25 i915_sw_batchbuffer(struct i915_winsys_batchbuffer *batch)
     26 {
     27    return (struct i915_sw_batchbuffer *)batch;
     28 }
     29 
     30 static void
     31 i915_sw_batchbuffer_reset(struct i915_sw_batchbuffer *batch)
     32 {
     33    memset(batch->base.map, 0, batch->actual_size);
     34    batch->base.ptr = batch->base.map;
     35    batch->base.size = batch->actual_size - BATCH_RESERVED;
     36    batch->base.relocs = 0;
     37 }
     38 
     39 static struct i915_winsys_batchbuffer *
     40 i915_sw_batchbuffer_create(struct i915_winsys *iws)
     41 {
     42    struct i915_sw_winsys *isws = i915_sw_winsys(iws);
     43    struct i915_sw_batchbuffer *batch = CALLOC_STRUCT(i915_sw_batchbuffer);
     44 
     45    batch->actual_size = isws->max_batch_size;
     46 
     47    batch->base.map = MALLOC(batch->actual_size);
     48    batch->base.ptr = NULL;
     49    batch->base.size = 0;
     50 
     51    batch->base.relocs = 0;
     52 
     53    batch->base.iws = iws;
     54 
     55    i915_sw_batchbuffer_reset(batch);
     56 
     57    return &batch->base;
     58 }
     59 
     60 static boolean
     61 i915_sw_batchbuffer_validate_buffers(struct i915_winsys_batchbuffer *batch,
     62 				     struct i915_winsys_buffer **buffer,
     63 				     int num_of_buffers)
     64 {
     65    return TRUE;
     66 }
     67 
     68 static int
     69 i915_sw_batchbuffer_reloc(struct i915_winsys_batchbuffer *ibatch,
     70                           struct i915_winsys_buffer *buffer,
     71                           enum i915_winsys_buffer_usage usage,
     72                           unsigned pre_add, boolean fenced)
     73 {
     74    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
     75    int ret = 0;
     76 
     77    if (usage == I915_USAGE_SAMPLER) {
     78 
     79    } else if (usage == I915_USAGE_RENDER) {
     80 
     81    } else if (usage == I915_USAGE_2D_TARGET) {
     82 
     83    } else if (usage == I915_USAGE_2D_SOURCE) {
     84 
     85    } else if (usage == I915_USAGE_VERTEX) {
     86 
     87    } else {
     88       assert(0);
     89       return -1;
     90    }
     91 
     92    ((uint32_t*)batch->base.ptr)[0] = 0;
     93    batch->base.ptr += 4;
     94 
     95    if (!ret)
     96       batch->base.relocs++;
     97 
     98    return ret;
     99 }
    100 
    101 static void
    102 i915_sw_batchbuffer_flush(struct i915_winsys_batchbuffer *ibatch,
    103                           struct pipe_fence_handle **fence)
    104 {
    105    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
    106    unsigned used = 0;
    107 
    108    assert(i915_winsys_batchbuffer_space(ibatch) >= 0);
    109 
    110    used = batch->base.ptr - batch->base.map;
    111    assert((used & 3) == 0);
    112 
    113 #ifdef INTEL_ALWAYS_FLUSH
    114    /* MI_FLUSH | FLUSH_MAP_CACHE */
    115    i915_winsys_batchbuffer_dword_unchecked(ibatch, (0x4<<23)|(1<<0));
    116    used += 4;
    117 #endif
    118 
    119    if ((used & 4) == 0) {
    120       /* MI_NOOP */
    121       i915_winsys_batchbuffer_dword_unchecked(ibatch, 0);
    122    }
    123    /* MI_BATCH_BUFFER_END */
    124    i915_winsys_batchbuffer_dword_unchecked(ibatch, (0xA<<23));
    125 
    126    used = batch->base.ptr - batch->base.map;
    127    assert((used & 4) == 0);
    128 
    129    if (i915_sw_winsys(ibatch->iws)->dump_cmd) {
    130       i915_dump_batchbuffer(ibatch);
    131    }
    132 
    133    if (fence) {
    134       ibatch->iws->fence_reference(ibatch->iws, fence, NULL);
    135 
    136       (*fence) = i915_sw_fence_create();
    137    }
    138 
    139    i915_sw_batchbuffer_reset(batch);
    140 }
    141 
    142 static void
    143 i915_sw_batchbuffer_destroy(struct i915_winsys_batchbuffer *ibatch)
    144 {
    145    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
    146 
    147    FREE(batch->base.map);
    148    FREE(batch);
    149 }
    150 
    151 void i915_sw_winsys_init_batchbuffer_functions(struct i915_sw_winsys *isws)
    152 {
    153    isws->base.batchbuffer_create = i915_sw_batchbuffer_create;
    154    isws->base.validate_buffers = i915_sw_batchbuffer_validate_buffers;
    155    isws->base.batchbuffer_reloc = i915_sw_batchbuffer_reloc;
    156    isws->base.batchbuffer_flush = i915_sw_batchbuffer_flush;
    157    isws->base.batchbuffer_destroy = i915_sw_batchbuffer_destroy;
    158 }
    159