9c6d6488fa
we will import a newer version of the Linux code so the linuxkpi was not used. This is still missing 10G support, and multicast has not been tested. Reviewed by: gnn Obtained from: ABT Systems Ltd Sponsored by: SoftIron Inc Differential Revision: https://reviews.freebsd.org/D8549
540 lines
16 KiB
C
540 lines
16 KiB
C
/*
|
|
* AMD 10Gb Ethernet driver
|
|
*
|
|
* This file is available to you under your choice of the following two
|
|
* licenses:
|
|
*
|
|
* License 1: GPLv2
|
|
*
|
|
* Copyright (c) 2014 Advanced Micro Devices, Inc.
|
|
*
|
|
* This file is free software; you may copy, redistribute and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* This file is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* This file incorporates work covered by the following copyright and
|
|
* permission notice:
|
|
* The Synopsys DWC ETHER XGMAC Software Driver and documentation
|
|
* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
|
|
* Inc. unless otherwise expressly agreed to in writing between Synopsys
|
|
* and you.
|
|
*
|
|
* The Software IS NOT an item of Licensed Software or Licensed Product
|
|
* under any End User Software License Agreement or Agreement for Licensed
|
|
* Product with Synopsys or any supplement thereto. Permission is hereby
|
|
* granted, free of charge, to any person obtaining a copy of this software
|
|
* annotated with this license and the Software, to deal in the Software
|
|
* without restriction, including without limitation the rights to use,
|
|
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
* of the Software, and to permit persons to whom the Software is furnished
|
|
* to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
|
|
* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
|
|
* 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.
|
|
*
|
|
*
|
|
* License 2: Modified BSD
|
|
*
|
|
* Copyright (c) 2014 Advanced Micro Devices, 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:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * 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.
|
|
* * Neither the name of Advanced Micro Devices, Inc. nor the
|
|
* names of its contributors may be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 <COPYRIGHT HOLDER> 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.
|
|
*
|
|
* This file incorporates work covered by the following copyright and
|
|
* permission notice:
|
|
* The Synopsys DWC ETHER XGMAC Software Driver and documentation
|
|
* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
|
|
* Inc. unless otherwise expressly agreed to in writing between Synopsys
|
|
* and you.
|
|
*
|
|
* The Software IS NOT an item of Licensed Software or Licensed Product
|
|
* under any End User Software License Agreement or Agreement for Licensed
|
|
* Product with Synopsys or any supplement thereto. Permission is hereby
|
|
* granted, free of charge, to any person obtaining a copy of this software
|
|
* annotated with this license and the Software, to deal in the Software
|
|
* without restriction, including without limitation the rights to use,
|
|
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
* of the Software, and to permit persons to whom the Software is furnished
|
|
* to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
|
|
* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "xgbe.h"
|
|
#include "xgbe-common.h"
|
|
|
|
static void xgbe_unmap_rdata(struct xgbe_prv_data *, struct xgbe_ring_data *);
|
|
|
|
static void xgbe_free_ring(struct xgbe_prv_data *pdata,
|
|
struct xgbe_ring *ring)
|
|
{
|
|
struct xgbe_ring_data *rdata;
|
|
unsigned int i;
|
|
|
|
if (!ring)
|
|
return;
|
|
|
|
bus_dmamap_destroy(ring->mbuf_dmat, ring->mbuf_map);
|
|
bus_dma_tag_destroy(ring->mbuf_dmat);
|
|
|
|
ring->mbuf_map = NULL;
|
|
ring->mbuf_dmat = NULL;
|
|
|
|
if (ring->rdata) {
|
|
for (i = 0; i < ring->rdesc_count; i++) {
|
|
rdata = XGBE_GET_DESC_DATA(ring, i);
|
|
xgbe_unmap_rdata(pdata, rdata);
|
|
}
|
|
|
|
free(ring->rdata, M_AXGBE);
|
|
ring->rdata = NULL;
|
|
}
|
|
|
|
bus_dmamap_unload(ring->rdesc_dmat, ring->rdesc_map);
|
|
bus_dmamem_free(ring->rdesc_dmat, ring->rdesc, ring->rdesc_map);
|
|
bus_dma_tag_destroy(ring->rdesc_dmat);
|
|
|
|
ring->rdesc_map = NULL;
|
|
ring->rdesc_dmat = NULL;
|
|
ring->rdesc = NULL;
|
|
}
|
|
|
|
static void xgbe_free_ring_resources(struct xgbe_prv_data *pdata)
|
|
{
|
|
struct xgbe_channel *channel;
|
|
unsigned int i;
|
|
|
|
DBGPR("-->xgbe_free_ring_resources\n");
|
|
|
|
channel = pdata->channel;
|
|
for (i = 0; i < pdata->channel_count; i++, channel++) {
|
|
xgbe_free_ring(pdata, channel->tx_ring);
|
|
xgbe_free_ring(pdata, channel->rx_ring);
|
|
}
|
|
|
|
DBGPR("<--xgbe_free_ring_resources\n");
|
|
}
|
|
|
|
static void xgbe_ring_dmamap_cb(void *arg, bus_dma_segment_t * segs, int nseg,
|
|
int error)
|
|
{
|
|
if (error)
|
|
return;
|
|
*(bus_addr_t *) arg = segs->ds_addr;
|
|
}
|
|
|
|
static int xgbe_init_ring(struct xgbe_prv_data *pdata,
|
|
struct xgbe_ring *ring, unsigned int rdesc_count)
|
|
{
|
|
bus_size_t len;
|
|
int err, flags;
|
|
|
|
DBGPR("-->xgbe_init_ring\n");
|
|
|
|
if (!ring)
|
|
return 0;
|
|
|
|
flags = 0;
|
|
if (pdata->coherent)
|
|
flags = BUS_DMA_COHERENT;
|
|
|
|
/* Descriptors */
|
|
ring->rdesc_count = rdesc_count;
|
|
len = sizeof(struct xgbe_ring_desc) * rdesc_count;
|
|
err = bus_dma_tag_create(pdata->dmat, 512, 0, BUS_SPACE_MAXADDR,
|
|
BUS_SPACE_MAXADDR, NULL, NULL, len, 1, len, flags, NULL, NULL,
|
|
&ring->rdesc_dmat);
|
|
if (err != 0) {
|
|
printf("Unable to create the DMA tag: %d\n", err);
|
|
return -err;
|
|
}
|
|
|
|
err = bus_dmamem_alloc(ring->rdesc_dmat, (void **)&ring->rdesc,
|
|
BUS_DMA_WAITOK | BUS_DMA_COHERENT, &ring->rdesc_map);
|
|
if (err != 0) {
|
|
bus_dma_tag_destroy(ring->rdesc_dmat);
|
|
printf("Unable to allocate DMA memory: %d\n", err);
|
|
return -err;
|
|
}
|
|
err = bus_dmamap_load(ring->rdesc_dmat, ring->rdesc_map, ring->rdesc,
|
|
len, xgbe_ring_dmamap_cb, &ring->rdesc_paddr, 0);
|
|
if (err != 0) {
|
|
bus_dmamem_free(ring->rdesc_dmat, ring->rdesc, ring->rdesc_map);
|
|
bus_dma_tag_destroy(ring->rdesc_dmat);
|
|
printf("Unable to load DMA memory\n");
|
|
return -err;
|
|
}
|
|
|
|
/* Descriptor information */
|
|
ring->rdata = malloc(rdesc_count * sizeof(struct xgbe_ring_data),
|
|
M_AXGBE, M_WAITOK | M_ZERO);
|
|
|
|
/* Create the space DMA tag for mbufs */
|
|
err = bus_dma_tag_create(pdata->dmat, 1, 0, BUS_SPACE_MAXADDR,
|
|
BUS_SPACE_MAXADDR, NULL, NULL, XGBE_TX_MAX_BUF_SIZE * rdesc_count,
|
|
rdesc_count, XGBE_TX_MAX_BUF_SIZE, flags, NULL, NULL,
|
|
&ring->mbuf_dmat);
|
|
if (err != 0)
|
|
return -err;
|
|
|
|
err = bus_dmamap_create(ring->mbuf_dmat, 0, &ring->mbuf_map);
|
|
if (err != 0)
|
|
return -err;
|
|
|
|
DBGPR("<--xgbe_init_ring\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xgbe_alloc_ring_resources(struct xgbe_prv_data *pdata)
|
|
{
|
|
struct xgbe_channel *channel;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
DBGPR("-->xgbe_alloc_ring_resources\n");
|
|
|
|
channel = pdata->channel;
|
|
for (i = 0; i < pdata->channel_count; i++, channel++) {
|
|
ret = xgbe_init_ring(pdata, channel->tx_ring,
|
|
pdata->tx_desc_count);
|
|
if (ret) {
|
|
printf("error initializing Tx ring\n");
|
|
goto err_ring;
|
|
}
|
|
|
|
ret = xgbe_init_ring(pdata, channel->rx_ring,
|
|
pdata->rx_desc_count);
|
|
if (ret) {
|
|
printf("error initializing Rx ring\n");
|
|
goto err_ring;
|
|
}
|
|
}
|
|
|
|
DBGPR("<--xgbe_alloc_ring_resources\n");
|
|
|
|
return 0;
|
|
|
|
err_ring:
|
|
xgbe_free_ring_resources(pdata);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int xgbe_map_rx_buffer(struct xgbe_prv_data *pdata,
|
|
struct xgbe_ring *ring,
|
|
struct xgbe_ring_data *rdata)
|
|
{
|
|
bus_dmamap_t mbuf_map;
|
|
bus_dma_segment_t segs[2];
|
|
struct mbuf *m0, *m1;
|
|
int err, nsegs;
|
|
|
|
m0 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MCLBYTES);
|
|
if (m0 == NULL)
|
|
return (-ENOBUFS);
|
|
|
|
m1 = m_getjcl(M_NOWAIT, MT_DATA, 0, MCLBYTES);
|
|
if (m1 == NULL) {
|
|
m_freem(m0);
|
|
return (-ENOBUFS);
|
|
}
|
|
|
|
m0->m_next = m1;
|
|
m0->m_flags |= M_PKTHDR;
|
|
m0->m_len = MHLEN;
|
|
m0->m_pkthdr.len = MHLEN + MCLBYTES;
|
|
|
|
m1->m_len = MCLBYTES;
|
|
m1->m_next = NULL;
|
|
m1->m_pkthdr.len = MCLBYTES;
|
|
|
|
err = bus_dmamap_create(ring->mbuf_dmat, 0, &mbuf_map);
|
|
if (err != 0) {
|
|
m_freem(m0);
|
|
return (-err);
|
|
}
|
|
|
|
err = bus_dmamap_load_mbuf_sg(ring->mbuf_dmat, mbuf_map, m0, segs,
|
|
&nsegs, BUS_DMA_NOWAIT);
|
|
if (err != 0) {
|
|
m_freem(m0);
|
|
bus_dmamap_destroy(ring->mbuf_dmat, mbuf_map);
|
|
return (-err);
|
|
}
|
|
|
|
KASSERT(nsegs == 2,
|
|
("xgbe_map_rx_buffer: Unable to handle multiple segments %d",
|
|
nsegs));
|
|
|
|
rdata->mb = m0;
|
|
rdata->mbuf_free = 0;
|
|
rdata->mbuf_dmat = ring->mbuf_dmat;
|
|
rdata->mbuf_map = mbuf_map;
|
|
rdata->mbuf_hdr_paddr = segs[0].ds_addr;
|
|
rdata->mbuf_data_paddr = segs[1].ds_addr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void xgbe_wrapper_tx_descriptor_init(struct xgbe_prv_data *pdata)
|
|
{
|
|
struct xgbe_hw_if *hw_if = &pdata->hw_if;
|
|
struct xgbe_channel *channel;
|
|
struct xgbe_ring *ring;
|
|
struct xgbe_ring_data *rdata;
|
|
struct xgbe_ring_desc *rdesc;
|
|
bus_addr_t rdesc_paddr;
|
|
unsigned int i, j;
|
|
|
|
DBGPR("-->xgbe_wrapper_tx_descriptor_init\n");
|
|
|
|
channel = pdata->channel;
|
|
for (i = 0; i < pdata->channel_count; i++, channel++) {
|
|
ring = channel->tx_ring;
|
|
if (!ring)
|
|
break;
|
|
|
|
rdesc = ring->rdesc;
|
|
rdesc_paddr = ring->rdesc_paddr;
|
|
|
|
for (j = 0; j < ring->rdesc_count; j++) {
|
|
rdata = XGBE_GET_DESC_DATA(ring, j);
|
|
|
|
rdata->rdesc = rdesc;
|
|
rdata->rdata_paddr = rdesc_paddr;
|
|
|
|
rdesc++;
|
|
rdesc_paddr += sizeof(struct xgbe_ring_desc);
|
|
}
|
|
|
|
ring->cur = 0;
|
|
ring->dirty = 0;
|
|
memset(&ring->tx, 0, sizeof(ring->tx));
|
|
|
|
hw_if->tx_desc_init(channel);
|
|
}
|
|
|
|
DBGPR("<--xgbe_wrapper_tx_descriptor_init\n");
|
|
}
|
|
|
|
static void xgbe_wrapper_rx_descriptor_init(struct xgbe_prv_data *pdata)
|
|
{
|
|
struct xgbe_hw_if *hw_if = &pdata->hw_if;
|
|
struct xgbe_channel *channel;
|
|
struct xgbe_ring *ring;
|
|
struct xgbe_ring_desc *rdesc;
|
|
struct xgbe_ring_data *rdata;
|
|
bus_addr_t rdesc_paddr;
|
|
unsigned int i, j;
|
|
|
|
DBGPR("-->xgbe_wrapper_rx_descriptor_init\n");
|
|
|
|
channel = pdata->channel;
|
|
for (i = 0; i < pdata->channel_count; i++, channel++) {
|
|
ring = channel->rx_ring;
|
|
if (!ring)
|
|
break;
|
|
|
|
rdesc = ring->rdesc;
|
|
rdesc_paddr = ring->rdesc_paddr;
|
|
|
|
for (j = 0; j < ring->rdesc_count; j++) {
|
|
rdata = XGBE_GET_DESC_DATA(ring, j);
|
|
|
|
rdata->rdesc = rdesc;
|
|
rdata->rdata_paddr = rdesc_paddr;
|
|
|
|
if (xgbe_map_rx_buffer(pdata, ring, rdata))
|
|
break;
|
|
|
|
rdesc++;
|
|
rdesc_paddr += sizeof(struct xgbe_ring_desc);
|
|
}
|
|
|
|
ring->cur = 0;
|
|
ring->dirty = 0;
|
|
|
|
hw_if->rx_desc_init(channel);
|
|
}
|
|
}
|
|
|
|
static void xgbe_unmap_rdata(struct xgbe_prv_data *pdata,
|
|
struct xgbe_ring_data *rdata)
|
|
{
|
|
|
|
if (rdata->mbuf_map != NULL)
|
|
bus_dmamap_destroy(rdata->mbuf_dmat, rdata->mbuf_map);
|
|
|
|
if (rdata->mbuf_free)
|
|
m_freem(rdata->mb);
|
|
|
|
rdata->mb = NULL;
|
|
rdata->mbuf_free = 0;
|
|
rdata->mbuf_hdr_paddr = 0;
|
|
rdata->mbuf_data_paddr = 0;
|
|
rdata->mbuf_len = 0;
|
|
|
|
memset(&rdata->tx, 0, sizeof(rdata->tx));
|
|
memset(&rdata->rx, 0, sizeof(rdata->rx));
|
|
}
|
|
|
|
struct xgbe_map_tx_skb_data {
|
|
struct xgbe_ring *ring;
|
|
struct xgbe_packet_data *packet;
|
|
unsigned int cur_index;
|
|
};
|
|
|
|
static void xgbe_map_tx_skb_cb(void *callback_arg, bus_dma_segment_t *segs,
|
|
int nseg, bus_size_t mapsize, int error)
|
|
{
|
|
struct xgbe_map_tx_skb_data *data;
|
|
struct xgbe_ring_data *rdata;
|
|
struct xgbe_ring *ring;
|
|
int i;
|
|
|
|
if (error != 0)
|
|
return;
|
|
|
|
data = callback_arg;
|
|
ring = data->ring;
|
|
|
|
for (i = 0; i < nseg; i++) {
|
|
rdata = XGBE_GET_DESC_DATA(ring, data->cur_index);
|
|
|
|
KASSERT(segs[i].ds_len <= XGBE_TX_MAX_BUF_SIZE,
|
|
("%s: Segment size is too large %ld > %d", __func__,
|
|
segs[i].ds_len, XGBE_TX_MAX_BUF_SIZE));
|
|
|
|
if (i == 0) {
|
|
rdata->mbuf_dmat = ring->mbuf_dmat;
|
|
bus_dmamap_create(ring->mbuf_dmat, 0, &ring->mbuf_map);
|
|
}
|
|
|
|
rdata->mbuf_hdr_paddr = 0;
|
|
rdata->mbuf_data_paddr = segs[i].ds_addr;
|
|
rdata->mbuf_len = segs[i].ds_len;
|
|
|
|
data->packet->length += rdata->mbuf_len;
|
|
|
|
data->cur_index++;
|
|
}
|
|
}
|
|
|
|
static int xgbe_map_tx_skb(struct xgbe_channel *channel, struct mbuf *m)
|
|
{
|
|
struct xgbe_ring *ring = channel->tx_ring;
|
|
struct xgbe_map_tx_skb_data cbdata;
|
|
struct xgbe_ring_data *rdata;
|
|
struct xgbe_packet_data *packet;
|
|
unsigned int start_index, cur_index;
|
|
int err;
|
|
|
|
DBGPR("-->xgbe_map_tx_skb: cur = %d\n", ring->cur);
|
|
|
|
start_index = ring->cur;
|
|
cur_index = ring->cur;
|
|
|
|
packet = &ring->packet_data;
|
|
packet->rdesc_count = 0;
|
|
packet->length = 0;
|
|
|
|
cbdata.ring = ring;
|
|
cbdata.packet = packet;
|
|
cbdata.cur_index = cur_index;
|
|
|
|
err = bus_dmamap_load_mbuf(ring->mbuf_dmat, ring->mbuf_map, m,
|
|
xgbe_map_tx_skb_cb, &cbdata, BUS_DMA_NOWAIT);
|
|
if (err != 0) /* TODO: Undo the mapping */
|
|
return (-err);
|
|
|
|
cur_index = cbdata.cur_index;
|
|
|
|
/* Save the mbuf address in the last entry. We always have some data
|
|
* that has been mapped so rdata is always advanced past the last
|
|
* piece of mapped data - use the entry pointed to by cur_index - 1.
|
|
*/
|
|
rdata = XGBE_GET_DESC_DATA(ring, cur_index - 1);
|
|
rdata->mb = m;
|
|
rdata->mbuf_free = 1;
|
|
|
|
/* Save the number of descriptor entries used */
|
|
packet->rdesc_count = cur_index - start_index;
|
|
|
|
DBGPR("<--xgbe_map_tx_skb: count=%u\n", packet->rdesc_count);
|
|
|
|
return packet->rdesc_count;
|
|
}
|
|
|
|
void xgbe_init_function_ptrs_desc(struct xgbe_desc_if *desc_if)
|
|
{
|
|
DBGPR("-->xgbe_init_function_ptrs_desc\n");
|
|
|
|
desc_if->alloc_ring_resources = xgbe_alloc_ring_resources;
|
|
desc_if->free_ring_resources = xgbe_free_ring_resources;
|
|
desc_if->map_tx_skb = xgbe_map_tx_skb;
|
|
desc_if->map_rx_buffer = xgbe_map_rx_buffer;
|
|
desc_if->unmap_rdata = xgbe_unmap_rdata;
|
|
desc_if->wrapper_tx_desc_init = xgbe_wrapper_tx_descriptor_init;
|
|
desc_if->wrapper_rx_desc_init = xgbe_wrapper_rx_descriptor_init;
|
|
|
|
DBGPR("<--xgbe_init_function_ptrs_desc\n");
|
|
}
|