220281c91d
Support 7xxx adapters including firmware-assisted TSO and VLAN tagging: - Solarflare Flareon Ultra 7000 series 10/40G adapters: - Solarflare SFN7042Q QSFP+ Server Adapter - Solarflare SFN7142Q QSFP+ Server Adapter - Solarflare Flareon Ultra 7000 series 10G adapters: - Solarflare SFN7022F SFP+ Server Adapter - Solarflare SFN7122F SFP+ Server Adapter - Solarflare SFN7322F Precision Time Synchronization Server Adapter - Solarflare Flareon 7000 series 10G adapters: - Solarflare SFN7002F SFP+ Server Adapter Support utilities to configure adapters and update firmware. The work is done by Solarflare developers (Andy Moreton, Andrew Lee and many others), Artem V. Andreev <Artem.Andreev at oktetlabs.ru> and me. Sponsored by: Solarflare Communications, Inc. MFC after: 2 weeks Causually read by: gnn Differential Revision: https://reviews.freebsd.org/D2618
217 lines
5.5 KiB
C
217 lines
5.5 KiB
C
/*-
|
|
* Copyright (c) 2010-2015 Solarflare Communications Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed in part by Philip Paeps under contract for
|
|
* Solarflare Communications, Inc.
|
|
*
|
|
* 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 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 THE COPYRIGHT OWNER 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.
|
|
*
|
|
* The views and conclusions contained in the software and documentation are
|
|
* those of the authors and should not be interpreted as representing official
|
|
* policies, either expressed or implied, of the FreeBSD Project.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/taskqueue.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include "common/efx.h"
|
|
|
|
#include "sfxge.h"
|
|
|
|
static void
|
|
sfxge_dma_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
|
|
{
|
|
bus_addr_t *addr;
|
|
|
|
addr = arg;
|
|
|
|
if (error != 0) {
|
|
*addr = 0;
|
|
return;
|
|
}
|
|
|
|
*addr = segs[0].ds_addr;
|
|
}
|
|
|
|
int
|
|
sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
|
|
struct mbuf **mp, bus_dma_segment_t *segs,
|
|
int *nsegs, int maxsegs)
|
|
{
|
|
bus_dma_segment_t *psegs;
|
|
struct mbuf *m;
|
|
int seg_count;
|
|
int defragged;
|
|
int err;
|
|
|
|
m = *mp;
|
|
defragged = err = seg_count = 0;
|
|
|
|
KASSERT(m->m_pkthdr.len, ("packet has zero header length"));
|
|
|
|
retry:
|
|
psegs = segs;
|
|
seg_count = 0;
|
|
if (m->m_next == NULL) {
|
|
sfxge_map_mbuf_fast(tag, map, m, segs);
|
|
*nsegs = 1;
|
|
return (0);
|
|
}
|
|
#if defined(__i386__) || defined(__amd64__)
|
|
while (m != NULL && seg_count < maxsegs) {
|
|
/*
|
|
* firmware doesn't like empty segments
|
|
*/
|
|
if (m->m_len != 0) {
|
|
seg_count++;
|
|
sfxge_map_mbuf_fast(tag, map, m, psegs);
|
|
psegs++;
|
|
}
|
|
m = m->m_next;
|
|
}
|
|
#else
|
|
err = bus_dmamap_load_mbuf_sg(tag, map, *mp, segs, &seg_count, 0);
|
|
#endif
|
|
if (seg_count == 0) {
|
|
err = EFBIG;
|
|
goto err_out;
|
|
} else if (err == EFBIG || seg_count >= maxsegs) {
|
|
if (!defragged) {
|
|
m = m_defrag(*mp, M_NOWAIT);
|
|
if (m == NULL) {
|
|
err = ENOBUFS;
|
|
goto err_out;
|
|
}
|
|
*mp = m;
|
|
defragged = 1;
|
|
goto retry;
|
|
}
|
|
err = EFBIG;
|
|
goto err_out;
|
|
}
|
|
*nsegs = seg_count;
|
|
|
|
err_out:
|
|
return (err);
|
|
}
|
|
|
|
void
|
|
sfxge_dma_free(efsys_mem_t *esmp)
|
|
{
|
|
|
|
bus_dmamap_unload(esmp->esm_tag, esmp->esm_map);
|
|
bus_dmamem_free(esmp->esm_tag, esmp->esm_base, esmp->esm_map);
|
|
bus_dma_tag_destroy(esmp->esm_tag);
|
|
|
|
esmp->esm_addr = 0;
|
|
esmp->esm_base = NULL;
|
|
}
|
|
|
|
int
|
|
sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len, efsys_mem_t *esmp)
|
|
{
|
|
void *vaddr;
|
|
|
|
/* Create the child DMA tag. */
|
|
if (bus_dma_tag_create(sc->parent_dma_tag, PAGE_SIZE, 0,
|
|
MIN(0x3FFFFFFFFFFFUL, BUS_SPACE_MAXADDR), BUS_SPACE_MAXADDR, NULL,
|
|
NULL, len, 1, len, 0, NULL, NULL, &esmp->esm_tag) != 0) {
|
|
device_printf(sc->dev, "Couldn't allocate txq DMA tag\n");
|
|
goto fail_tag_create;
|
|
}
|
|
|
|
/* Allocate kernel memory. */
|
|
if (bus_dmamem_alloc(esmp->esm_tag, (void **)&vaddr,
|
|
BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO,
|
|
&esmp->esm_map) != 0) {
|
|
device_printf(sc->dev, "Couldn't allocate DMA memory\n");
|
|
goto fail_alloc;
|
|
}
|
|
|
|
/* Load map into device memory. */
|
|
if (bus_dmamap_load(esmp->esm_tag, esmp->esm_map, vaddr, len,
|
|
sfxge_dma_cb, &esmp->esm_addr, 0) != 0) {
|
|
device_printf(sc->dev, "Couldn't load DMA mapping\n");
|
|
goto fail_load;
|
|
}
|
|
|
|
/*
|
|
* The callback gets error information about the mapping
|
|
* and will have set esm_addr to 0 if something went
|
|
* wrong.
|
|
*/
|
|
if (esmp->esm_addr == 0)
|
|
goto fail_load_check;
|
|
|
|
esmp->esm_base = vaddr;
|
|
|
|
return (0);
|
|
|
|
fail_load_check:
|
|
fail_load:
|
|
bus_dmamem_free(esmp->esm_tag, vaddr, esmp->esm_map);
|
|
fail_alloc:
|
|
bus_dma_tag_destroy(esmp->esm_tag);
|
|
fail_tag_create:
|
|
return (ENOMEM);
|
|
}
|
|
|
|
void
|
|
sfxge_dma_fini(struct sfxge_softc *sc)
|
|
{
|
|
|
|
bus_dma_tag_destroy(sc->parent_dma_tag);
|
|
}
|
|
|
|
int
|
|
sfxge_dma_init(struct sfxge_softc *sc)
|
|
{
|
|
|
|
/* Create the parent dma tag. */
|
|
if (bus_dma_tag_create(bus_get_dma_tag(sc->dev), /* parent */
|
|
1, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR, /* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
|
|
BUS_SPACE_UNRESTRICTED, /* nsegments */
|
|
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, NULL, /* lock, lockarg */
|
|
&sc->parent_dma_tag) != 0) {
|
|
device_printf(sc->dev, "Cannot allocate parent DMA tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
|
|
return (0);
|
|
}
|