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);
}
void
__hal_ring_prc_enable(xge_hal_channel_h channelh)
{
xge_hal_ring_t *ring = (xge_hal_ring_t *)channelh;
xge_hal_device_t *hldev = (xge_hal_device_t *)ring->channel.devh;
xge_hal_pci_bar0_t *bar0;
u64 val64;
void *first_block;
int block_num;
xge_hal_ring_queue_t *queue;
pci_dma_h dma_handle;
xge_assert(ring);
xge_assert(ring->channel.pdev);
bar0 = (xge_hal_pci_bar0_t *) (void *)
((xge_hal_device_t *)ring->channel.devh)->bar0;
queue = &ring->config->queue[ring->channel.post_qid];
xge_assert(queue->buffer_mode == 1 ||
queue->buffer_mode == 3 ||
queue->buffer_mode == 5);
/* last block in fact becomes first. This is just the way it
* is filled up and linked by item_alloc() */
block_num = queue->initial;
first_block = __hal_mempool_item(ring->mempool, block_num - 1);
val64 = __hal_ring_item_dma_addr(ring->mempool,
first_block, &dma_handle);
xge_os_pio_mem_write64(ring->channel.pdev, ring->channel.regh0,
val64, &bar0->prc_rxd0_n[ring->channel.post_qid]);
xge_debug_ring(XGE_TRACE, "ring%d PRC DMA addr 0x%llx initialized",
ring->channel.post_qid, (unsigned long long)val64);
val64 = xge_os_pio_mem_read64(ring->channel.pdev,
ring->channel.regh0, &bar0->prc_ctrl_n[ring->channel.post_qid]);
if (xge_hal_device_check_id(hldev) == XGE_HAL_CARD_HERC &&
!queue->rth_en) {
val64 |= XGE_HAL_PRC_CTRL_RTH_DISABLE;
}
val64 |= XGE_HAL_PRC_CTRL_RC_ENABLED;
val64 |= vBIT((queue->buffer_mode >> 1),14,2);/* 1,3 or 5 => 0,1 or 2 */
val64 &= ~XGE_HAL_PRC_CTRL_RXD_BACKOFF_INTERVAL(0xFFFFFF);
val64 |= XGE_HAL_PRC_CTRL_RXD_BACKOFF_INTERVAL(
(hldev->config.pci_freq_mherz * queue->backoff_interval_us));
/* Beware: no snoop by the bridge if (no_snoop_bits) */
val64 |= XGE_HAL_PRC_CTRL_NO_SNOOP(queue->no_snoop_bits);
/* Herc: always use group_reads */
if (xge_hal_device_check_id(hldev) == XGE_HAL_CARD_HERC)
val64 |= XGE_HAL_PRC_CTRL_GROUP_READS;
xge_os_pio_mem_write64(ring->channel.pdev, ring->channel.regh0,
val64, &bar0->prc_ctrl_n[ring->channel.post_qid]);
/* Configure Receive Protocol Assist */
val64 = xge_os_pio_mem_read64(ring->channel.pdev,
ring->channel.regh0, &bar0->rx_pa_cfg);
val64 |= XGE_HAL_RX_PA_CFG_SCATTER_MODE(ring->config->scatter_mode);
val64 |= (XGE_HAL_RX_PA_CFG_IGNORE_SNAP_OUI | XGE_HAL_RX_PA_CFG_IGNORE_LLC_CTRL);
/* Clean STRIP_VLAN_TAG bit and set as config from upper layer */
val64 &= ~XGE_HAL_RX_PA_CFG_STRIP_VLAN_TAG_MODE(1);
val64 |= XGE_HAL_RX_PA_CFG_STRIP_VLAN_TAG_MODE(ring->config->strip_vlan_tag);
xge_os_pio_mem_write64(ring->channel.pdev, ring->channel.regh0,
val64, &bar0->rx_pa_cfg);
xge_debug_ring(XGE_TRACE, "ring%d enabled in buffer_mode %d",
ring->channel.post_qid, queue->buffer_mode);
}
/*
* __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__);
}