static void
__hal_ring_rxdblock_link(xge_hal_mempool_h mempoolh,
xge_hal_ring_t *ring, int from, int to)
{
xge_hal_ring_block_t *to_item, *from_item;
dma_addr_t to_dma, from_dma;
pci_dma_h to_dma_handle, from_dma_handle;
/* get "from" RxD block */
from_item = (xge_hal_ring_block_t *)
__hal_mempool_item((xge_hal_mempool_t *) mempoolh, from);
xge_assert(from_item);
/* get "to" RxD block */
to_item = (xge_hal_ring_block_t *)
__hal_mempool_item((xge_hal_mempool_t *) mempoolh, to);
xge_assert(to_item);
/* return address of the beginning of previous RxD block */
to_dma = __hal_ring_item_dma_addr(mempoolh, to_item, &to_dma_handle);
/* set next pointer for this RxD block to point on
* previous item's DMA start address */
__hal_ring_block_next_pointer_set(from_item, to_dma);
/* return "from" RxD block's DMA start address */
from_dma =
__hal_ring_item_dma_addr(mempoolh, from_item, &from_dma_handle);
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
/* we must sync "from" RxD block, so hardware will see it */
xge_os_dma_sync(ring->channel.pdev,
from_dma_handle,
from_dma + XGE_HAL_RING_NEXT_BLOCK_POINTER_OFFSET,
__hal_ring_item_dma_offset(mempoolh, from_item) +
XGE_HAL_RING_NEXT_BLOCK_POINTER_OFFSET,
sizeof(u64),
XGE_OS_DMA_DIR_TODEVICE);
#endif
xge_debug_ring(XGE_TRACE, "block%d:0x"XGE_OS_LLXFMT" => block%d:0x"XGE_OS_LLXFMT,
from, (unsigned long long)from_dma, to,
(unsigned long long)to_dma);
}
/*
* __hal_ring_rxdblock_link - Link the RxD blocks
* @mempoolh: Handle to the memory pool of the ring
* @ring: ring
* @from: RxD block from which to link
* @to: RxD block to which to link to
*
* This function returns the dma address of a given item
*/
static void
__hal_ring_rxdblock_link(
vxge_hal_mempool_h mempoolh,
__hal_ring_t *ring,
u32 from,
u32 to)
{
vxge_hal_ring_block_t *to_item, *from_item;
dma_addr_t to_dma, from_dma;
pci_dma_h to_dma_handle, from_dma_handle;
__hal_device_t *hldev;
vxge_assert((mempoolh != NULL) && (ring != NULL));
hldev = (__hal_device_t *) ring->channel.devh;
vxge_hal_trace_log_ring("==> %s:%s:%d",
__FILE__, __func__, __LINE__);
vxge_hal_trace_log_ring(
"mempoolh = 0x"VXGE_OS_STXFMT", ring = 0x"VXGE_OS_STXFMT", "
"from = %d, to = %d", (ptr_t) mempoolh, (ptr_t) ring, from, to);
/* get "from" RxD block */
from_item = (vxge_hal_ring_block_t *) __hal_mempool_item(
(vxge_hal_mempool_t *) mempoolh, from);
vxge_assert(from_item);
/* get "to" RxD block */
to_item = (vxge_hal_ring_block_t *) __hal_mempool_item(
(vxge_hal_mempool_t *) mempoolh, to);
vxge_assert(to_item);
/* return address of the beginning of previous RxD block */
to_dma = __hal_ring_item_dma_addr(mempoolh, to_item, &to_dma_handle);
/*
* set next pointer for this RxD block to point on
* previous item's DMA start address
*/
__hal_ring_block_next_pointer_set(from_item, to_dma);
/* return "from" RxD block's DMA start address */
from_dma = __hal_ring_item_dma_addr(
mempoolh, from_item, &from_dma_handle);
#if defined(VXGE_OS_DMA_REQUIRES_SYNC) && defined(VXGE_HAL_DMA_RXD_STREAMING)
/* we must sync "from" RxD block, so hardware will see it */
vxge_os_dma_sync(ring->channel.pdev,
from_dma_handle,
from_dma + VXGE_HAL_RING_NEXT_BLOCK_POINTER_OFFSET,
__hal_ring_item_dma_offset(mempoolh, from_item) +
VXGE_HAL_RING_NEXT_BLOCK_POINTER_OFFSET,
sizeof(u64),
VXGE_OS_DMA_DIR_TODEVICE);
#endif
vxge_hal_info_log_ring(
"block%d:0x"VXGE_OS_STXFMT" => block%d:0x"VXGE_OS_STXFMT,
from, (ptr_t) from_dma, to, (ptr_t) to_dma);
vxge_hal_trace_log_ring("<== %s:%s:%d Result: 0",
__FILE__, __func__, __LINE__);
}
