diff options
Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_batch.c')
-rw-r--r-- | src/gallium/drivers/cell/ppu/cell_batch.c | 56 |
1 files changed, 53 insertions, 3 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_batch.c b/src/gallium/drivers/cell/ppu/cell_batch.c index f45e5f25b6..16882c0129 100644 --- a/src/gallium/drivers/cell/ppu/cell_batch.c +++ b/src/gallium/drivers/cell/ppu/cell_batch.c @@ -32,6 +32,13 @@ +/** + * Search the buffer pool for an empty/free buffer and return its index. + * Buffers are used for storing vertex data, state and commands which + * will be sent to the SPUs. + * If no empty buffers are available, wait for one. + * \return buffer index in [0, CELL_NUM_BUFFERS-1] + */ uint cell_get_empty_buffer(struct cell_context *cell) { @@ -74,6 +81,11 @@ cell_get_empty_buffer(struct cell_context *cell) } +/** + * Flush the current batch buffer to the SPUs. + * An empty buffer will be found and set as the new current batch buffer + * for subsequent commands/data. + */ void cell_batch_flush(struct cell_context *cell) { @@ -93,11 +105,11 @@ cell_batch_flush(struct cell_context *cell) /* printf("cell_batch_dispatch: buf %u at %p, size %u\n", - batch, &cell->batch_buffer[batch][0], size); + batch, &cell->buffer[batch][0], size); */ /* - * Build "BATCH" command and sent to all SPUs. + * Build "BATCH" command and send to all SPUs. */ cmd_word = CELL_CMD_BATCH | (batch << 8) | (size << 16); @@ -120,6 +132,9 @@ cell_batch_flush(struct cell_context *cell) } +/** + * Return the number of bytes free in the current batch buffer. + */ uint cell_batch_free_space(const struct cell_context *cell) { @@ -129,7 +144,9 @@ cell_batch_free_space(const struct cell_context *cell) /** - * Append data to current batch. + * Append data to the current batch buffer. + * \param data address of block of bytes to append + * \param bytes size of block of bytes */ void cell_batch_append(struct cell_context *cell, const void *data, uint bytes) @@ -165,6 +182,10 @@ cell_batch_append(struct cell_context *cell, const void *data, uint bytes) } +/** + * Allocate space in the current batch buffer for 'bytes' space. + * \return address in batch buffer to put data + */ void * cell_batch_alloc(struct cell_context *cell, uint bytes) { @@ -172,6 +193,10 @@ cell_batch_alloc(struct cell_context *cell, uint bytes) } +/** + * Same as \sa cell_batch_alloc, but return an address at a particular + * alignment. + */ void * cell_batch_alloc_aligned(struct cell_context *cell, uint bytes, uint alignment) @@ -215,3 +240,28 @@ cell_batch_alloc_aligned(struct cell_context *cell, uint bytes, return pos; } + + +/** + * One-time init of batch buffers. + */ +void +cell_init_batch_buffers(struct cell_context *cell) +{ + uint spu, buf; + + /* init command, vertex/index buffer info */ + for (buf = 0; buf < CELL_NUM_BUFFERS; buf++) { + cell->buffer_size[buf] = 0; + + /* init batch buffer status values, + * mark 0th buffer as used, rest as free. + */ + for (spu = 0; spu < cell->num_spus; spu++) { + if (buf == 0) + cell->buffer_status[spu][buf][0] = CELL_BUFFER_STATUS_USED; + else + cell->buffer_status[spu][buf][0] = CELL_BUFFER_STATUS_FREE; + } + } +} |