C++ (Cpp) __hal_mempool_memblock_dma Examples

Example #1

File: xgehal-ring.c Project: andreiw/polaris

static dma_addr_t
__hal_ring_item_dma_addr(xge_hal_mempool_h mempoolh, void *item,
		pci_dma_h *dma_handle)
{
	int memblock_idx;
	void *memblock;
	xge_hal_mempool_dma_t *memblock_dma_object;
	ptrdiff_t dma_item_offset;

	/* get owner memblock index */
	memblock_idx = __hal_ring_block_memblock_idx(item);

	/* get owner memblock by memblock index */
	memblock = __hal_mempool_memblock(mempoolh, memblock_idx);

	/* get memblock DMA object by memblock index */
	memblock_dma_object =
		__hal_mempool_memblock_dma(mempoolh, memblock_idx);

	/* calculate offset in the memblock of this item */
	dma_item_offset = (char*)item - (char*)memblock;

	*dma_handle = memblock_dma_object->handle;

	return memblock_dma_object->addr + dma_item_offset;
}

Example #2

File: vxgehal-ring.c Project: JabirTech/Source

/*
 * __hal_ring_first_block_address_get - Returns the dma address of the
 *		first block
 * @ringh: Handle to the ring
 *
 * Returns the dma address of the first RxD block
 */
u64
__hal_ring_first_block_address_get(
    vxge_hal_ring_h ringh)
{
	__hal_ring_t *ring = (__hal_ring_t *) ringh;
	vxge_hal_mempool_dma_t *dma_object;

	dma_object = __hal_mempool_memblock_dma(ring->mempool, 0);

	vxge_assert(dma_object != NULL);

	return (dma_object->addr);
}

Example #3

File: vxgehal-ring.c Project: JabirTech/Source

/*
 * __hal_ring_item_dma_addr - Return the dma address of an item
 * @mempoolh: Handle to the memory pool of the ring
 * @item: Item for which to get the dma offset
 * @dma_handle: dma handle
 *
 * This function returns the dma address of a given item
 */
static dma_addr_t
__hal_ring_item_dma_addr(
    vxge_hal_mempool_h mempoolh,
    void *item,
    pci_dma_h *dma_handle)
{
	u32 memblock_idx;
	void *memblock;
	vxge_hal_mempool_dma_t *memblock_dma_object;
	vxge_hal_mempool_t *mempool = (vxge_hal_mempool_t *) mempoolh;
	__hal_device_t *hldev;
	ptrdiff_t dma_item_offset;

	vxge_assert((mempoolh != NULL) && (item != NULL) &&
	    (dma_handle != NULL));

	hldev = (__hal_device_t *) mempool->devh;

	vxge_hal_trace_log_ring("==> %s:%s:%d",
	    __FILE__, __func__, __LINE__);

	vxge_hal_trace_log_ring(
	    "mempoolh = 0x"VXGE_OS_STXFMT", item = 0x"VXGE_OS_STXFMT", "
	    "dma_handle = 0x"VXGE_OS_STXFMT, (ptr_t) mempoolh,
	    (ptr_t) item, (ptr_t) dma_handle);

	/* get owner memblock index */
	memblock_idx = __hal_ring_block_memblock_idx((u8 *) item);

	/* get owner memblock by memblock index */
	memblock = __hal_mempool_memblock(
	    (vxge_hal_mempool_t *) mempoolh, memblock_idx);

	/* get memblock DMA object by memblock index */
	memblock_dma_object = __hal_mempool_memblock_dma(
	    (vxge_hal_mempool_t *) mempoolh, memblock_idx);

	/* calculate offset in the memblock of this item */
	/* LINTED */
	dma_item_offset = (u8 *) item - (u8 *) memblock;

	*dma_handle = memblock_dma_object->handle;

	vxge_hal_trace_log_ring("<== %s:%s:%d  Result: 0",
	    __FILE__, __func__, __LINE__);

	return (memblock_dma_object->addr + dma_item_offset);
}