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freebsd-skq/sys/dev/nxge/xgehal/xgehal-ring-fp.c
Robert Watson 3be4cb0b4a Merge Neterion if_nxge driver version 2.0.9.11230 with the following 
changes:

  01 -  Enhanced LRO:
  LRO feature is extended to support multi-buffer mode. Previously,
  Ethernet frames received in contiguous buffers were offloaded.
  Now, frames received in multiple non-contiguous buffers can be
  offloaded, as well. The driver now supports LRO for jumbo frames.

  02 - Locks Optimization:
  The driver code was re-organized to limit the use of locks.
  Moreover, lock contention was reduced by replacing wait locks
  with try locks.

  03 - Code Optimization:
  The driver code was re-factored  to eliminate some memcpy
  operations.  Fast path loops were optimized.

  04 - Tag Creations:
  Physical Buffer Tags are now optimized based upon frame size.
  For better performance, Physical Memory Maps are now re-used.

  05 - Configuration:
  Features such as TSO, LRO, and Interrupt Mode can be configured
  either at load or at run time. Rx buffer mode (mode 1 or mode 2)
  can be configured at load time through kenv.

  06 - Driver Statistics:
  Run time statistics are enhanced to provide better visibility
  into the driver performance.

  07 - Bug Fixes:
  The driver contains fixes for the problems discovered and
  reported since last submission.

  08 - MSI support:
  Added Message Signaled Interrupt feature which currently uses 1
  message.

  09  Removed feature:
  Rx 3 buffer mode feature has been removed. Driver now supports 1,
  2 and 5 buffer modes of which 2 and 5 buffer modes can be used
  for header separation.

  10  Compiler warning:
  Fixed compiler warning when compiled for 32 bit system.

  11 Copyright notice:
  Source files are updated with the proper copyright notice.

MFC after:	3 days
Submitted by:	Alicia Pena <Alicia dot Pena at neterion dot com>,
		Muhammad Shafiq <Muhammad dot Shafiq at neterion dot com>
2007-10-29 14:19:32 +00:00

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/*-
* Copyright (c) 2002-2007 Neterion, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifdef XGE_DEBUG_FP
#include <dev/nxge/include/xgehal-ring.h>
#endif
__HAL_STATIC_RING __HAL_INLINE_RING xge_hal_ring_rxd_priv_t*
__hal_ring_rxd_priv(xge_hal_ring_t *ring, xge_hal_dtr_h dtrh)
{
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
xge_hal_ring_rxd_priv_t *rxd_priv;
xge_assert(rxdp);
#if defined(XGE_HAL_USE_5B_MODE)
xge_assert(ring);
if (ring->buffer_mode == XGE_HAL_RING_QUEUE_BUFFER_MODE_5) {
xge_hal_ring_rxd_5_t *rxdp_5 = (xge_hal_ring_rxd_5_t *)dtrh;
#if defined (XGE_OS_PLATFORM_64BIT)
int memblock_idx = rxdp_5->host_control >> 16;
int i = rxdp_5->host_control & 0xFFFF;
rxd_priv = (xge_hal_ring_rxd_priv_t *)
((char*)ring->mempool->memblocks_priv_arr[memblock_idx] + ring->rxd_priv_size * i);
#else
/* 32-bit case */
rxd_priv = (xge_hal_ring_rxd_priv_t *)rxdp_5->host_control;
#endif
} else
#endif
{
rxd_priv = (xge_hal_ring_rxd_priv_t *)
(ulong_t)rxdp->host_control;
}
xge_assert(rxd_priv);
xge_assert(rxd_priv->dma_object);
xge_assert(rxd_priv->dma_object->handle == rxd_priv->dma_handle);
xge_assert(rxd_priv->dma_object->addr + rxd_priv->dma_offset ==
rxd_priv->dma_addr);
return rxd_priv;
}
__HAL_STATIC_RING __HAL_INLINE_RING int
__hal_ring_block_memblock_idx(xge_hal_ring_block_t *block)
{
return (int)*((u64 *)(void *)((char *)block +
XGE_HAL_RING_MEMBLOCK_IDX_OFFSET));
}
__HAL_STATIC_RING __HAL_INLINE_RING void
__hal_ring_block_memblock_idx_set(xge_hal_ring_block_t*block, int memblock_idx)
{
*((u64 *)(void *)((char *)block +
XGE_HAL_RING_MEMBLOCK_IDX_OFFSET)) =
memblock_idx;
}
__HAL_STATIC_RING __HAL_INLINE_RING dma_addr_t
__hal_ring_block_next_pointer(xge_hal_ring_block_t *block)
{
return (dma_addr_t)*((u64 *)(void *)((char *)block +
XGE_HAL_RING_NEXT_BLOCK_POINTER_OFFSET));
}
__HAL_STATIC_RING __HAL_INLINE_RING void
__hal_ring_block_next_pointer_set(xge_hal_ring_block_t *block,
dma_addr_t dma_next)
{
*((u64 *)(void *)((char *)block +
XGE_HAL_RING_NEXT_BLOCK_POINTER_OFFSET)) = dma_next;
}
/**
* xge_hal_ring_dtr_private - Get ULD private per-descriptor data.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
*
* Returns: private ULD info associated with the descriptor.
* ULD requests per-descriptor space via xge_hal_channel_open().
*
* See also: xge_hal_fifo_dtr_private().
* Usage: See ex_rx_compl{}.
*/
__HAL_STATIC_RING __HAL_INLINE_RING void*
xge_hal_ring_dtr_private(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh)
{
return (char *)__hal_ring_rxd_priv((xge_hal_ring_t *) channelh, dtrh) +
sizeof(xge_hal_ring_rxd_priv_t);
}
/**
* xge_hal_ring_dtr_reserve - Reserve ring descriptor.
* @channelh: Channel handle.
* @dtrh: Reserved descriptor. On success HAL fills this "out" parameter
* with a valid handle.
*
* Reserve Rx descriptor for the subsequent filling-in (by upper layer
* driver (ULD)) and posting on the corresponding channel (@channelh)
* via xge_hal_ring_dtr_post().
*
* Returns: XGE_HAL_OK - success.
* XGE_HAL_INF_OUT_OF_DESCRIPTORS - Currently no descriptors available.
*
* See also: xge_hal_fifo_dtr_reserve(), xge_hal_ring_dtr_free(),
* xge_hal_fifo_dtr_reserve_sp(), xge_hal_status_e{}.
* Usage: See ex_post_all_rx{}.
*/
__HAL_STATIC_RING __HAL_INLINE_RING xge_hal_status_e
xge_hal_ring_dtr_reserve(xge_hal_channel_h channelh, xge_hal_dtr_h *dtrh)
{
xge_hal_status_e status;
#if defined(XGE_HAL_RX_MULTI_RESERVE_IRQ)
unsigned long flags;
#endif
#if defined(XGE_HAL_RX_MULTI_RESERVE)
xge_os_spin_lock(&((xge_hal_channel_t*)channelh)->reserve_lock);
#elif defined(XGE_HAL_RX_MULTI_RESERVE_IRQ)
xge_os_spin_lock_irq(&((xge_hal_channel_t*)channelh)->reserve_lock,
flags);
#endif
status = __hal_channel_dtr_alloc(channelh, dtrh);
#if defined(XGE_HAL_RX_MULTI_RESERVE)
xge_os_spin_unlock(&((xge_hal_channel_t*)channelh)->reserve_lock);
#elif defined(XGE_HAL_RX_MULTI_RESERVE_IRQ)
xge_os_spin_unlock_irq(&((xge_hal_channel_t*)channelh)->reserve_lock,
flags);
#endif
if (status == XGE_HAL_OK) {
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)*dtrh;
/* instead of memset: reset this RxD */
rxdp->control_1 = rxdp->control_2 = 0;
#if defined(XGE_OS_MEMORY_CHECK)
__hal_ring_rxd_priv((xge_hal_ring_t *) channelh, rxdp)->allocated = 1;
#endif
}
return status;
}
/**
* xge_hal_ring_dtr_info_get - Get extended information associated with
* a completed receive descriptor for 1b mode.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
* @ext_info: See xge_hal_dtr_info_t{}. Returned by HAL.
*
* Retrieve extended information associated with a completed receive descriptor.
*
* See also: xge_hal_dtr_info_t{}, xge_hal_ring_dtr_1b_get(),
* xge_hal_ring_dtr_5b_get().
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_info_get(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
xge_hal_dtr_info_t *ext_info)
{
/* cast to 1-buffer mode RxD: the code below relies on the fact
* that control_1 and control_2 are formatted the same way.. */
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
ext_info->l3_cksum = XGE_HAL_RXD_GET_L3_CKSUM(rxdp->control_1);
ext_info->l4_cksum = XGE_HAL_RXD_GET_L4_CKSUM(rxdp->control_1);
ext_info->frame = XGE_HAL_RXD_GET_FRAME_TYPE(rxdp->control_1);
ext_info->proto = XGE_HAL_RXD_GET_FRAME_PROTO(rxdp->control_1);
ext_info->vlan = XGE_HAL_RXD_GET_VLAN_TAG(rxdp->control_2);
/* Herc only, a few extra cycles imposed on Xena and/or
* when RTH is not enabled.
* Alternatively, could check
* xge_hal_device_check_id(), hldev->config.rth_en, queue->rth_en */
ext_info->rth_it_hit = XGE_HAL_RXD_GET_RTH_IT_HIT(rxdp->control_1);
ext_info->rth_spdm_hit =
XGE_HAL_RXD_GET_RTH_SPDM_HIT(rxdp->control_1);
ext_info->rth_hash_type =
XGE_HAL_RXD_GET_RTH_HASH_TYPE(rxdp->control_1);
ext_info->rth_value = XGE_HAL_RXD_1_GET_RTH_VALUE(rxdp->control_2);
}
/**
* xge_hal_ring_dtr_info_nb_get - Get extended information associated
* with a completed receive descriptor for 3b or 5b
* modes.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
* @ext_info: See xge_hal_dtr_info_t{}. Returned by HAL.
*
* Retrieve extended information associated with a completed receive descriptor.
*
* See also: xge_hal_dtr_info_t{}, xge_hal_ring_dtr_1b_get(),
* xge_hal_ring_dtr_5b_get().
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_info_nb_get(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
xge_hal_dtr_info_t *ext_info)
{
/* cast to 1-buffer mode RxD: the code below relies on the fact
* that control_1 and control_2 are formatted the same way.. */
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
ext_info->l3_cksum = XGE_HAL_RXD_GET_L3_CKSUM(rxdp->control_1);
ext_info->l4_cksum = XGE_HAL_RXD_GET_L4_CKSUM(rxdp->control_1);
ext_info->frame = XGE_HAL_RXD_GET_FRAME_TYPE(rxdp->control_1);
ext_info->proto = XGE_HAL_RXD_GET_FRAME_PROTO(rxdp->control_1);
ext_info->vlan = XGE_HAL_RXD_GET_VLAN_TAG(rxdp->control_2);
/* Herc only, a few extra cycles imposed on Xena and/or
* when RTH is not enabled. Same comment as above. */
ext_info->rth_it_hit = XGE_HAL_RXD_GET_RTH_IT_HIT(rxdp->control_1);
ext_info->rth_spdm_hit =
XGE_HAL_RXD_GET_RTH_SPDM_HIT(rxdp->control_1);
ext_info->rth_hash_type =
XGE_HAL_RXD_GET_RTH_HASH_TYPE(rxdp->control_1);
ext_info->rth_value = (u32)rxdp->buffer0_ptr;
}
/**
* xge_hal_ring_dtr_1b_set - Prepare 1-buffer-mode descriptor.
* @dtrh: Descriptor handle.
* @dma_pointer: DMA address of a single receive buffer this descriptor
* should carry. Note that by the time
* xge_hal_ring_dtr_1b_set
* is called, the receive buffer should be already mapped
* to the corresponding Xframe device.
* @size: Size of the receive @dma_pointer buffer.
*
* Prepare 1-buffer-mode Rx descriptor for posting
* (via xge_hal_ring_dtr_post()).
*
* This inline helper-function does not return any parameters and always
* succeeds.
*
* See also: xge_hal_ring_dtr_3b_set(), xge_hal_ring_dtr_5b_set().
* Usage: See ex_post_all_rx{}.
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_1b_set(xge_hal_dtr_h dtrh, dma_addr_t dma_pointer, int size)
{
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
rxdp->buffer0_ptr = dma_pointer;
rxdp->control_2 &= (~XGE_HAL_RXD_1_MASK_BUFFER0_SIZE);
rxdp->control_2 |= XGE_HAL_RXD_1_SET_BUFFER0_SIZE(size);
xge_debug_ring(XGE_TRACE, "xge_hal_ring_dtr_1b_set: rxdp %p control_2 %p buffer0_ptr %p",
(xge_hal_ring_rxd_1_t *)dtrh,
rxdp->control_2,
rxdp->buffer0_ptr);
}
/**
* xge_hal_ring_dtr_1b_get - Get data from the completed 1-buf
* descriptor.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
* @dma_pointer: DMA address of a single receive buffer _this_ descriptor
* carries. Returned by HAL.
* @pkt_length: Length (in bytes) of the data in the buffer pointed by
* @dma_pointer. Returned by HAL.
*
* Retrieve protocol data from the completed 1-buffer-mode Rx descriptor.
* This inline helper-function uses completed descriptor to populate receive
* buffer pointer and other "out" parameters. The function always succeeds.
*
* See also: xge_hal_ring_dtr_3b_get(), xge_hal_ring_dtr_5b_get().
* Usage: See ex_rx_compl{}.
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_1b_get(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
dma_addr_t *dma_pointer, int *pkt_length)
{
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
*pkt_length = XGE_HAL_RXD_1_GET_BUFFER0_SIZE(rxdp->control_2);
*dma_pointer = rxdp->buffer0_ptr;
((xge_hal_channel_t *)channelh)->poll_bytes += *pkt_length;
}
/**
* xge_hal_ring_dtr_3b_set - Prepare 3-buffer-mode descriptor.
* @dtrh: Descriptor handle.
* @dma_pointers: Array of DMA addresses. Contains exactly 3 receive buffers
* _this_ descriptor should carry.
* Note that by the time xge_hal_ring_dtr_3b_set
* is called, the receive buffers should be mapped
* to the corresponding Xframe device.
* @sizes: Array of receive buffer sizes. Contains 3 sizes: one size per
* buffer from @dma_pointers.
*
* Prepare 3-buffer-mode Rx descriptor for posting (via
* xge_hal_ring_dtr_post()).
* This inline helper-function does not return any parameters and always
* succeeds.
*
* See also: xge_hal_ring_dtr_1b_set(), xge_hal_ring_dtr_5b_set().
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_3b_set(xge_hal_dtr_h dtrh, dma_addr_t dma_pointers[],
int sizes[])
{
xge_hal_ring_rxd_3_t *rxdp = (xge_hal_ring_rxd_3_t *)dtrh;
rxdp->buffer0_ptr = dma_pointers[0];
rxdp->control_2 &= (~XGE_HAL_RXD_3_MASK_BUFFER0_SIZE);
rxdp->control_2 |= XGE_HAL_RXD_3_SET_BUFFER0_SIZE(sizes[0]);
rxdp->buffer1_ptr = dma_pointers[1];
rxdp->control_2 &= (~XGE_HAL_RXD_3_MASK_BUFFER1_SIZE);
rxdp->control_2 |= XGE_HAL_RXD_3_SET_BUFFER1_SIZE(sizes[1]);
rxdp->buffer2_ptr = dma_pointers[2];
rxdp->control_2 &= (~XGE_HAL_RXD_3_MASK_BUFFER2_SIZE);
rxdp->control_2 |= XGE_HAL_RXD_3_SET_BUFFER2_SIZE(sizes[2]);
}
/**
* xge_hal_ring_dtr_3b_get - Get data from the completed 3-buf
* descriptor.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
* @dma_pointers: DMA addresses of the 3 receive buffers _this_ descriptor
* carries. The first two buffers contain ethernet and
* (IP + transport) headers. The 3rd buffer contains packet
* data.
* Returned by HAL.
* @sizes: Array of receive buffer sizes. Contains 3 sizes: one size per
* buffer from @dma_pointers. Returned by HAL.
*
* Retrieve protocol data from the completed 3-buffer-mode Rx descriptor.
* This inline helper-function uses completed descriptor to populate receive
* buffer pointer and other "out" parameters. The function always succeeds.
*
* See also: xge_hal_ring_dtr_3b_get(), xge_hal_ring_dtr_5b_get().
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_3b_get(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
dma_addr_t dma_pointers[], int sizes[])
{
xge_hal_ring_rxd_3_t *rxdp = (xge_hal_ring_rxd_3_t *)dtrh;
dma_pointers[0] = rxdp->buffer0_ptr;
sizes[0] = XGE_HAL_RXD_3_GET_BUFFER0_SIZE(rxdp->control_2);
dma_pointers[1] = rxdp->buffer1_ptr;
sizes[1] = XGE_HAL_RXD_3_GET_BUFFER1_SIZE(rxdp->control_2);
dma_pointers[2] = rxdp->buffer2_ptr;
sizes[2] = XGE_HAL_RXD_3_GET_BUFFER2_SIZE(rxdp->control_2);
((xge_hal_channel_t *)channelh)->poll_bytes += sizes[0] + sizes[1] +
sizes[2];
}
/**
* xge_hal_ring_dtr_5b_set - Prepare 5-buffer-mode descriptor.
* @dtrh: Descriptor handle.
* @dma_pointers: Array of DMA addresses. Contains exactly 5 receive buffers
* _this_ descriptor should carry.
* Note that by the time xge_hal_ring_dtr_5b_set
* is called, the receive buffers should be mapped
* to the corresponding Xframe device.
* @sizes: Array of receive buffer sizes. Contains 5 sizes: one size per
* buffer from @dma_pointers.
*
* Prepare 3-buffer-mode Rx descriptor for posting (via
* xge_hal_ring_dtr_post()).
* This inline helper-function does not return any parameters and always
* succeeds.
*
* See also: xge_hal_ring_dtr_1b_set(), xge_hal_ring_dtr_3b_set().
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_5b_set(xge_hal_dtr_h dtrh, dma_addr_t dma_pointers[],
int sizes[])
{
xge_hal_ring_rxd_5_t *rxdp = (xge_hal_ring_rxd_5_t *)dtrh;
rxdp->buffer0_ptr = dma_pointers[0];
rxdp->control_2 &= (~XGE_HAL_RXD_5_MASK_BUFFER0_SIZE);
rxdp->control_2 |= XGE_HAL_RXD_5_SET_BUFFER0_SIZE(sizes[0]);
rxdp->buffer1_ptr = dma_pointers[1];
rxdp->control_2 &= (~XGE_HAL_RXD_5_MASK_BUFFER1_SIZE);
rxdp->control_2 |= XGE_HAL_RXD_5_SET_BUFFER1_SIZE(sizes[1]);
rxdp->buffer2_ptr = dma_pointers[2];
rxdp->control_2 &= (~XGE_HAL_RXD_5_MASK_BUFFER2_SIZE);
rxdp->control_2 |= XGE_HAL_RXD_5_SET_BUFFER2_SIZE(sizes[2]);
rxdp->buffer3_ptr = dma_pointers[3];
rxdp->control_3 &= (~XGE_HAL_RXD_5_MASK_BUFFER3_SIZE);
rxdp->control_3 |= XGE_HAL_RXD_5_SET_BUFFER3_SIZE(sizes[3]);
rxdp->buffer4_ptr = dma_pointers[4];
rxdp->control_3 &= (~XGE_HAL_RXD_5_MASK_BUFFER4_SIZE);
rxdp->control_3 |= XGE_HAL_RXD_5_SET_BUFFER4_SIZE(sizes[4]);
}
/**
* xge_hal_ring_dtr_5b_get - Get data from the completed 5-buf
* descriptor.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
* @dma_pointers: DMA addresses of the 5 receive buffers _this_ descriptor
* carries. The first 4 buffers contains L2 (ethernet) through
* L5 headers. The 5th buffer contain received (applicaion)
* data. Returned by HAL.
* @sizes: Array of receive buffer sizes. Contains 5 sizes: one size per
* buffer from @dma_pointers. Returned by HAL.
*
* Retrieve protocol data from the completed 5-buffer-mode Rx descriptor.
* This inline helper-function uses completed descriptor to populate receive
* buffer pointer and other "out" parameters. The function always succeeds.
*
* See also: xge_hal_ring_dtr_3b_get(), xge_hal_ring_dtr_5b_get().
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_5b_get(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh,
dma_addr_t dma_pointers[], int sizes[])
{
xge_hal_ring_rxd_5_t *rxdp = (xge_hal_ring_rxd_5_t *)dtrh;
dma_pointers[0] = rxdp->buffer0_ptr;
sizes[0] = XGE_HAL_RXD_5_GET_BUFFER0_SIZE(rxdp->control_2);
dma_pointers[1] = rxdp->buffer1_ptr;
sizes[1] = XGE_HAL_RXD_5_GET_BUFFER1_SIZE(rxdp->control_2);
dma_pointers[2] = rxdp->buffer2_ptr;
sizes[2] = XGE_HAL_RXD_5_GET_BUFFER2_SIZE(rxdp->control_2);
dma_pointers[3] = rxdp->buffer3_ptr;
sizes[3] = XGE_HAL_RXD_5_GET_BUFFER3_SIZE(rxdp->control_3);
dma_pointers[4] = rxdp->buffer4_ptr;
sizes[4] = XGE_HAL_RXD_5_GET_BUFFER4_SIZE(rxdp->control_3);
((xge_hal_channel_t *)channelh)->poll_bytes += sizes[0] + sizes[1] +
sizes[2] + sizes[3] + sizes[4];
}
/**
* xge_hal_ring_dtr_pre_post - FIXME.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
*
* TBD
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_pre_post(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh)
{
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
xge_hal_ring_rxd_priv_t *priv;
xge_hal_ring_t *ring = (xge_hal_ring_t *)channelh;
#endif
#if defined(XGE_HAL_RX_MULTI_POST_IRQ)
unsigned long flags;
#endif
rxdp->control_2 |= XGE_HAL_RXD_NOT_COMPLETED;
#ifdef XGE_DEBUG_ASSERT
/* make sure Xena overwrites the (illegal) t_code on completion */
XGE_HAL_RXD_SET_T_CODE(rxdp->control_1, XGE_HAL_RXD_T_CODE_UNUSED_C);
#endif
xge_debug_ring(XGE_TRACE, "xge_hal_ring_dtr_pre_post: rxd 0x"XGE_OS_LLXFMT" posted %d post_qid %d",
(unsigned long long)(ulong_t)dtrh,
((xge_hal_ring_t *)channelh)->channel.post_index,
((xge_hal_ring_t *)channelh)->channel.post_qid);
#if defined(XGE_HAL_RX_MULTI_POST)
xge_os_spin_lock(&((xge_hal_channel_t*)channelh)->post_lock);
#elif defined(XGE_HAL_RX_MULTI_POST_IRQ)
xge_os_spin_lock_irq(&((xge_hal_channel_t*)channelh)->post_lock,
flags);
#endif
#if defined(XGE_DEBUG_ASSERT) && defined(XGE_HAL_RING_ENFORCE_ORDER)
{
xge_hal_channel_t *channel = (xge_hal_channel_t *)channelh;
if (channel->post_index != 0) {
xge_hal_dtr_h prev_dtrh;
xge_hal_ring_rxd_priv_t *rxdp_priv;
rxdp_priv = __hal_ring_rxd_priv((xge_hal_ring_t*)channel, rxdp);
prev_dtrh = channel->work_arr[channel->post_index - 1];
if (prev_dtrh != NULL &&
(rxdp_priv->dma_offset & (~0xFFF)) !=
rxdp_priv->dma_offset) {
xge_assert((char *)prev_dtrh +
((xge_hal_ring_t*)channel)->rxd_size == dtrh);
}
}
}
#endif
__hal_channel_dtr_post(channelh, dtrh);
#if defined(XGE_HAL_RX_MULTI_POST)
xge_os_spin_unlock(&((xge_hal_channel_t*)channelh)->post_lock);
#elif defined(XGE_HAL_RX_MULTI_POST_IRQ)
xge_os_spin_unlock_irq(&((xge_hal_channel_t*)channelh)->post_lock,
flags);
#endif
}
/**
* xge_hal_ring_dtr_post_post - FIXME.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
*
* TBD
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_post_post(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh)
{
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
xge_hal_ring_t *ring = (xge_hal_ring_t *)channelh;
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
xge_hal_ring_rxd_priv_t *priv;
#endif
/* do POST */
rxdp->control_1 |= XGE_HAL_RXD_POSTED_4_XFRAME;
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
priv = __hal_ring_rxd_priv(ring, rxdp);
xge_os_dma_sync(ring->channel.pdev,
priv->dma_handle, priv->dma_addr,
priv->dma_offset, ring->rxd_size,
XGE_OS_DMA_DIR_TODEVICE);
#endif
xge_debug_ring(XGE_TRACE, "xge_hal_ring_dtr_post_post: rxdp %p control_1 %p",
(xge_hal_ring_rxd_1_t *)dtrh,
rxdp->control_1);
if (ring->channel.usage_cnt > 0)
ring->channel.usage_cnt--;
}
/**
* xge_hal_ring_dtr_post_post_wmb.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
*
* Similar as xge_hal_ring_dtr_post_post, but in addition it does memory barrier.
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_post_post_wmb(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh)
{
xge_hal_ring_rxd_1_t *rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
xge_hal_ring_t *ring = (xge_hal_ring_t *)channelh;
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
xge_hal_ring_rxd_priv_t *priv;
#endif
/* Do memory barrier before changing the ownership */
xge_os_wmb();
/* do POST */
rxdp->control_1 |= XGE_HAL_RXD_POSTED_4_XFRAME;
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
priv = __hal_ring_rxd_priv(ring, rxdp);
xge_os_dma_sync(ring->channel.pdev,
priv->dma_handle, priv->dma_addr,
priv->dma_offset, ring->rxd_size,
XGE_OS_DMA_DIR_TODEVICE);
#endif
if (ring->channel.usage_cnt > 0)
ring->channel.usage_cnt--;
xge_debug_ring(XGE_TRACE, "xge_hal_ring_dtr_post_post_wmb: rxdp %p control_1 %p rxds_with_host %d",
(xge_hal_ring_rxd_1_t *)dtrh,
rxdp->control_1, ring->channel.usage_cnt);
}
/**
* xge_hal_ring_dtr_post - Post descriptor on the ring channel.
* @channelh: Channel handle.
* @dtrh: Descriptor obtained via xge_hal_ring_dtr_reserve().
*
* Post descriptor on the 'ring' type channel.
* Prior to posting the descriptor should be filled in accordance with
* Host/Xframe interface specification for a given service (LL, etc.).
*
* See also: xge_hal_fifo_dtr_post_many(), xge_hal_fifo_dtr_post().
* Usage: See ex_post_all_rx{}.
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_post(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh)
{
xge_hal_ring_dtr_pre_post(channelh, dtrh);
xge_hal_ring_dtr_post_post(channelh, dtrh);
}
/**
* xge_hal_ring_dtr_next_completed - Get the _next_ completed
* descriptor.
* @channelh: Channel handle.
* @dtrh: Descriptor handle. Returned by HAL.
* @t_code: Transfer code, as per Xframe User Guide,
* Receive Descriptor Format. Returned by HAL.
*
* Retrieve the _next_ completed descriptor.
* HAL uses channel callback (*xge_hal_channel_callback_f) to notifiy
* upper-layer driver (ULD) of new completed descriptors. After that
* the ULD can use xge_hal_ring_dtr_next_completed to retrieve the rest
* completions (the very first completion is passed by HAL via
* xge_hal_channel_callback_f).
*
* Implementation-wise, the upper-layer driver is free to call
* xge_hal_ring_dtr_next_completed either immediately from inside the
* channel callback, or in a deferred fashion and separate (from HAL)
* context.
*
* Non-zero @t_code means failure to fill-in receive buffer(s)
* of the descriptor.
* For instance, parity error detected during the data transfer.
* In this case Xframe will complete the descriptor and indicate
* for the host that the received data is not to be used.
* For details please refer to Xframe User Guide.
*
* Returns: XGE_HAL_OK - success.
* XGE_HAL_INF_NO_MORE_COMPLETED_DESCRIPTORS - No completed descriptors
* are currently available for processing.
*
* See also: xge_hal_channel_callback_f{},
* xge_hal_fifo_dtr_next_completed(), xge_hal_status_e{}.
* Usage: See ex_rx_compl{}.
*/
__HAL_STATIC_RING __HAL_INLINE_RING xge_hal_status_e
xge_hal_ring_dtr_next_completed(xge_hal_channel_h channelh, xge_hal_dtr_h *dtrh,
u8 *t_code)
{
xge_hal_ring_rxd_1_t *rxdp; /* doesn't matter 1, 3 or 5... */
xge_hal_ring_t *ring = (xge_hal_ring_t *)channelh;
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
xge_hal_ring_rxd_priv_t *priv;
#endif
__hal_channel_dtr_try_complete(ring, dtrh);
rxdp = (xge_hal_ring_rxd_1_t *)*dtrh;
if (rxdp == NULL) {
return XGE_HAL_INF_NO_MORE_COMPLETED_DESCRIPTORS;
}
#if defined(XGE_OS_DMA_REQUIRES_SYNC) && defined(XGE_HAL_DMA_DTR_STREAMING)
/* Note: 24 bytes at most means:
* - Control_3 in case of 5-buffer mode
* - Control_1 and Control_2
*
* This is the only length needs to be invalidated
* type of channels.*/
priv = __hal_ring_rxd_priv(ring, rxdp);
xge_os_dma_sync(ring->channel.pdev,
priv->dma_handle, priv->dma_addr,
priv->dma_offset, 24,
XGE_OS_DMA_DIR_FROMDEVICE);
#endif
/* check whether it is not the end */
if (!(rxdp->control_2 & XGE_HAL_RXD_NOT_COMPLETED) &&
!(rxdp->control_1 & XGE_HAL_RXD_POSTED_4_XFRAME)) {
#ifndef XGE_HAL_IRQ_POLLING
if (++ring->cmpl_cnt > ring->indicate_max_pkts) {
/* reset it. since we don't want to return
* garbage to the ULD */
*dtrh = 0;
return XGE_HAL_COMPLETIONS_REMAIN;
}
#endif
#ifdef XGE_DEBUG_ASSERT
#if defined(XGE_HAL_USE_5B_MODE)
#if !defined(XGE_OS_PLATFORM_64BIT)
if (ring->buffer_mode == XGE_HAL_RING_QUEUE_BUFFER_MODE_5) {
xge_assert(((xge_hal_ring_rxd_5_t *)
rxdp)->host_control!=0);
}
#endif
#else
xge_assert(rxdp->host_control!=0);
#endif
#endif
__hal_channel_dtr_complete(ring);
*t_code = (u8)XGE_HAL_RXD_GET_T_CODE(rxdp->control_1);
/* see XGE_HAL_SET_RXD_T_CODE() above.. */
xge_assert(*t_code != XGE_HAL_RXD_T_CODE_UNUSED_C);
xge_debug_ring(XGE_TRACE,
"compl_index %d post_qid %d t_code %d rxd 0x"XGE_OS_LLXFMT,
((xge_hal_channel_t*)ring)->compl_index,
((xge_hal_channel_t*)ring)->post_qid, *t_code,
(unsigned long long)(ulong_t)rxdp);
ring->channel.usage_cnt++;
if (ring->channel.stats.usage_max < ring->channel.usage_cnt)
ring->channel.stats.usage_max = ring->channel.usage_cnt;
return XGE_HAL_OK;
}
/* reset it. since we don't want to return
* garbage to the ULD */
*dtrh = 0;
return XGE_HAL_INF_NO_MORE_COMPLETED_DESCRIPTORS;
}
/**
* xge_hal_ring_dtr_free - Free descriptor.
* @channelh: Channel handle.
* @dtrh: Descriptor handle.
*
* Free the reserved descriptor. This operation is "symmetrical" to
* xge_hal_ring_dtr_reserve. The "free-ing" completes the descriptor's
* lifecycle.
*
* After free-ing (see xge_hal_ring_dtr_free()) the descriptor again can
* be:
*
* - reserved (xge_hal_ring_dtr_reserve);
*
* - posted (xge_hal_ring_dtr_post);
*
* - completed (xge_hal_ring_dtr_next_completed);
*
* - and recycled again (xge_hal_ring_dtr_free).
*
* For alternative state transitions and more details please refer to
* the design doc.
*
* See also: xge_hal_ring_dtr_reserve(), xge_hal_fifo_dtr_free().
* Usage: See ex_rx_compl{}.
*/
__HAL_STATIC_RING __HAL_INLINE_RING void
xge_hal_ring_dtr_free(xge_hal_channel_h channelh, xge_hal_dtr_h dtrh)
{
#if defined(XGE_HAL_RX_MULTI_FREE_IRQ)
unsigned long flags;
#endif
#if defined(XGE_HAL_RX_MULTI_FREE)
xge_os_spin_lock(&((xge_hal_channel_t*)channelh)->free_lock);
#elif defined(XGE_HAL_RX_MULTI_FREE_IRQ)
xge_os_spin_lock_irq(&((xge_hal_channel_t*)channelh)->free_lock,
flags);
#endif
__hal_channel_dtr_free(channelh, dtrh);
#if defined(XGE_OS_MEMORY_CHECK)
__hal_ring_rxd_priv((xge_hal_ring_t * ) channelh, dtrh)->allocated = 0;
#endif
#if defined(XGE_HAL_RX_MULTI_FREE)
xge_os_spin_unlock(&((xge_hal_channel_t*)channelh)->free_lock);
#elif defined(XGE_HAL_RX_MULTI_FREE_IRQ)
xge_os_spin_unlock_irq(&((xge_hal_channel_t*)channelh)->free_lock,
flags);
#endif
}
/**
* xge_hal_ring_is_next_dtr_completed - Check if the next dtr is completed
* @channelh: Channel handle.
*
* Checks if the the _next_ completed descriptor is in host memory
*
* Returns: XGE_HAL_OK - success.
* XGE_HAL_INF_NO_MORE_COMPLETED_DESCRIPTORS - No completed descriptors
* are currently available for processing.
*/
__HAL_STATIC_RING __HAL_INLINE_RING xge_hal_status_e
xge_hal_ring_is_next_dtr_completed(xge_hal_channel_h channelh)
{
xge_hal_ring_rxd_1_t *rxdp; /* doesn't matter 1, 3 or 5... */
xge_hal_ring_t *ring = (xge_hal_ring_t *)channelh;
xge_hal_dtr_h dtrh;
__hal_channel_dtr_try_complete(ring, &dtrh);
rxdp = (xge_hal_ring_rxd_1_t *)dtrh;
if (rxdp == NULL) {
return XGE_HAL_INF_NO_MORE_COMPLETED_DESCRIPTORS;
}
/* check whether it is not the end */
if (!(rxdp->control_2 & XGE_HAL_RXD_NOT_COMPLETED) &&
!(rxdp->control_1 & XGE_HAL_RXD_POSTED_4_XFRAME)) {
#ifdef XGE_DEBUG_ASSERT
#if defined(XGE_HAL_USE_5B_MODE)
#if !defined(XGE_OS_PLATFORM_64BIT)
if (ring->buffer_mode == XGE_HAL_RING_QUEUE_BUFFER_MODE_5) {
xge_assert(((xge_hal_ring_rxd_5_t *)
rxdp)->host_control!=0);
}
#endif
#else
xge_assert(rxdp->host_control!=0);
#endif
#endif
return XGE_HAL_OK;
}
return XGE_HAL_INF_NO_MORE_COMPLETED_DESCRIPTORS;
}
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