mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-06 17:18:32 +00:00
703 lines
17 KiB
C
703 lines
17 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2012 EMC Corp.
|
|
* All rights reserved.
|
|
*
|
|
* Copyright (c) 1997, 1998 Justin T. Gibbs.
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#include "opt_bus.h"
|
|
#include "opt_iommu.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/ktr.h>
|
|
#include <sys/limits.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/memdesc.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_map.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <opencrypto/cryptodev.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
/*
|
|
* Convenience function for manipulating driver locks from busdma (during
|
|
* busdma_swi, for example).
|
|
*/
|
|
void
|
|
busdma_lock_mutex(void *arg, bus_dma_lock_op_t op)
|
|
{
|
|
struct mtx *dmtx;
|
|
|
|
dmtx = (struct mtx *)arg;
|
|
switch (op) {
|
|
case BUS_DMA_LOCK:
|
|
mtx_lock(dmtx);
|
|
break;
|
|
case BUS_DMA_UNLOCK:
|
|
mtx_unlock(dmtx);
|
|
break;
|
|
default:
|
|
panic("Unknown operation 0x%x for busdma_lock_mutex!", op);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* dflt_lock should never get called. It gets put into the dma tag when
|
|
* lockfunc == NULL, which is only valid if the maps that are associated
|
|
* with the tag are meant to never be deferred.
|
|
*
|
|
* XXX Should have a way to identify which driver is responsible here.
|
|
*/
|
|
void
|
|
_busdma_dflt_lock(void *arg, bus_dma_lock_op_t op)
|
|
{
|
|
|
|
panic("driver error: _bus_dma_dflt_lock called");
|
|
}
|
|
|
|
|
|
/*
|
|
* Load up data starting at offset within a region specified by a
|
|
* list of virtual address ranges until either length or the region
|
|
* are exhausted.
|
|
*/
|
|
static int
|
|
_bus_dmamap_load_vlist(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
bus_dma_segment_t *list, int sglist_cnt, struct pmap *pmap, int *nsegs,
|
|
int flags, size_t offset, size_t length)
|
|
{
|
|
int error;
|
|
|
|
error = 0;
|
|
for (; sglist_cnt > 0 && length != 0; sglist_cnt--, list++) {
|
|
char *addr;
|
|
size_t ds_len;
|
|
|
|
KASSERT((offset < list->ds_len),
|
|
("Invalid mid-segment offset"));
|
|
addr = (char *)(uintptr_t)list->ds_addr + offset;
|
|
ds_len = list->ds_len - offset;
|
|
offset = 0;
|
|
if (ds_len > length)
|
|
ds_len = length;
|
|
length -= ds_len;
|
|
KASSERT((ds_len != 0), ("Segment length is zero"));
|
|
error = _bus_dmamap_load_buffer(dmat, map, addr, ds_len, pmap,
|
|
flags, NULL, nsegs);
|
|
if (error)
|
|
break;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Load a list of physical addresses.
|
|
*/
|
|
static int
|
|
_bus_dmamap_load_plist(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
bus_dma_segment_t *list, int sglist_cnt, int *nsegs, int flags)
|
|
{
|
|
int error;
|
|
|
|
error = 0;
|
|
for (; sglist_cnt > 0; sglist_cnt--, list++) {
|
|
error = _bus_dmamap_load_phys(dmat, map,
|
|
(vm_paddr_t)list->ds_addr, list->ds_len, flags, NULL,
|
|
nsegs);
|
|
if (error)
|
|
break;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Load an unmapped mbuf
|
|
*/
|
|
static int
|
|
_bus_dmamap_load_mbuf_epg(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
struct mbuf *m, bus_dma_segment_t *segs, int *nsegs, int flags)
|
|
{
|
|
int error, i, off, len, pglen, pgoff, seglen, segoff;
|
|
|
|
M_ASSERTEXTPG(m);
|
|
|
|
len = m->m_len;
|
|
error = 0;
|
|
|
|
/* Skip over any data removed from the front. */
|
|
off = mtod(m, vm_offset_t);
|
|
|
|
if (m->m_epg_hdrlen != 0) {
|
|
if (off >= m->m_epg_hdrlen) {
|
|
off -= m->m_epg_hdrlen;
|
|
} else {
|
|
seglen = m->m_epg_hdrlen - off;
|
|
segoff = off;
|
|
seglen = min(seglen, len);
|
|
off = 0;
|
|
len -= seglen;
|
|
error = _bus_dmamap_load_buffer(dmat, map,
|
|
&m->m_epg_hdr[segoff], seglen, kernel_pmap,
|
|
flags, segs, nsegs);
|
|
}
|
|
}
|
|
pgoff = m->m_epg_1st_off;
|
|
for (i = 0; i < m->m_epg_npgs && error == 0 && len > 0; i++) {
|
|
pglen = m_epg_pagelen(m, i, pgoff);
|
|
if (off >= pglen) {
|
|
off -= pglen;
|
|
pgoff = 0;
|
|
continue;
|
|
}
|
|
seglen = pglen - off;
|
|
segoff = pgoff + off;
|
|
off = 0;
|
|
seglen = min(seglen, len);
|
|
len -= seglen;
|
|
error = _bus_dmamap_load_phys(dmat, map,
|
|
m->m_epg_pa[i] + segoff, seglen, flags, segs, nsegs);
|
|
pgoff = 0;
|
|
};
|
|
if (len != 0 && error == 0) {
|
|
KASSERT((off + len) <= m->m_epg_trllen,
|
|
("off + len > trail (%d + %d > %d)", off, len,
|
|
m->m_epg_trllen));
|
|
error = _bus_dmamap_load_buffer(dmat, map,
|
|
&m->m_epg_trail[off], len, kernel_pmap, flags, segs,
|
|
nsegs);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Load a single mbuf.
|
|
*/
|
|
static int
|
|
_bus_dmamap_load_single_mbuf(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
struct mbuf *m, bus_dma_segment_t *segs, int *nsegs, int flags)
|
|
{
|
|
int error;
|
|
|
|
error = 0;
|
|
if ((m->m_flags & M_EXTPG) != 0)
|
|
error = _bus_dmamap_load_mbuf_epg(dmat, map, m, segs, nsegs,
|
|
flags);
|
|
else
|
|
error = _bus_dmamap_load_buffer(dmat, map, m->m_data, m->m_len,
|
|
kernel_pmap, flags | BUS_DMA_LOAD_MBUF, segs, nsegs);
|
|
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
|
|
__func__, dmat, flags, error, *nsegs);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Load an mbuf chain.
|
|
*/
|
|
static int
|
|
_bus_dmamap_load_mbuf_sg(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
struct mbuf *m0, bus_dma_segment_t *segs, int *nsegs, int flags)
|
|
{
|
|
struct mbuf *m;
|
|
int error;
|
|
|
|
error = 0;
|
|
for (m = m0; m != NULL && error == 0; m = m->m_next) {
|
|
if (m->m_len > 0) {
|
|
if ((m->m_flags & M_EXTPG) != 0)
|
|
error = _bus_dmamap_load_mbuf_epg(dmat,
|
|
map, m, segs, nsegs, flags);
|
|
else
|
|
error = _bus_dmamap_load_buffer(dmat, map,
|
|
m->m_data, m->m_len, kernel_pmap,
|
|
flags | BUS_DMA_LOAD_MBUF, segs, nsegs);
|
|
}
|
|
}
|
|
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
|
|
__func__, dmat, flags, error, *nsegs);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_ma_triv(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags,
|
|
bus_dma_segment_t *segs, int *segp)
|
|
{
|
|
vm_paddr_t paddr;
|
|
bus_size_t len;
|
|
int error, i;
|
|
|
|
error = 0;
|
|
for (i = 0; tlen > 0; i++, tlen -= len) {
|
|
len = min(PAGE_SIZE - ma_offs, tlen);
|
|
paddr = VM_PAGE_TO_PHYS(ma[i]) + ma_offs;
|
|
error = _bus_dmamap_load_phys(dmat, map, paddr, len,
|
|
flags, segs, segp);
|
|
if (error != 0)
|
|
break;
|
|
ma_offs = 0;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Load a uio.
|
|
*/
|
|
static int
|
|
_bus_dmamap_load_uio(bus_dma_tag_t dmat, bus_dmamap_t map, struct uio *uio,
|
|
int *nsegs, int flags)
|
|
{
|
|
bus_size_t resid;
|
|
bus_size_t minlen;
|
|
struct iovec *iov;
|
|
pmap_t pmap;
|
|
caddr_t addr;
|
|
int error, i;
|
|
|
|
if (uio->uio_segflg == UIO_USERSPACE) {
|
|
KASSERT(uio->uio_td != NULL,
|
|
("bus_dmamap_load_uio: USERSPACE but no proc"));
|
|
pmap = vmspace_pmap(uio->uio_td->td_proc->p_vmspace);
|
|
} else
|
|
pmap = kernel_pmap;
|
|
resid = uio->uio_resid;
|
|
iov = uio->uio_iov;
|
|
error = 0;
|
|
|
|
for (i = 0; i < uio->uio_iovcnt && resid != 0 && !error; i++) {
|
|
/*
|
|
* Now at the first iovec to load. Load each iovec
|
|
* until we have exhausted the residual count.
|
|
*/
|
|
|
|
addr = (caddr_t) iov[i].iov_base;
|
|
minlen = resid < iov[i].iov_len ? resid : iov[i].iov_len;
|
|
if (minlen > 0) {
|
|
error = _bus_dmamap_load_buffer(dmat, map, addr,
|
|
minlen, pmap, flags, NULL, nsegs);
|
|
resid -= minlen;
|
|
}
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Map the buffer buf into bus space using the dmamap map.
|
|
*/
|
|
int
|
|
bus_dmamap_load(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
|
|
bus_size_t buflen, bus_dmamap_callback_t *callback,
|
|
void *callback_arg, int flags)
|
|
{
|
|
bus_dma_segment_t *segs;
|
|
struct memdesc mem;
|
|
int error;
|
|
int nsegs;
|
|
|
|
#ifdef KMSAN
|
|
mem = memdesc_vaddr(buf, buflen);
|
|
_bus_dmamap_load_kmsan(dmat, map, &mem);
|
|
#endif
|
|
|
|
if ((flags & BUS_DMA_NOWAIT) == 0) {
|
|
mem = memdesc_vaddr(buf, buflen);
|
|
_bus_dmamap_waitok(dmat, map, &mem, callback, callback_arg);
|
|
}
|
|
|
|
nsegs = -1;
|
|
error = _bus_dmamap_load_buffer(dmat, map, buf, buflen, kernel_pmap,
|
|
flags, NULL, &nsegs);
|
|
nsegs++;
|
|
|
|
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
|
|
__func__, dmat, flags, error, nsegs);
|
|
|
|
if (error == EINPROGRESS)
|
|
return (error);
|
|
|
|
segs = _bus_dmamap_complete(dmat, map, NULL, nsegs, error);
|
|
if (error)
|
|
(*callback)(callback_arg, segs, 0, error);
|
|
else
|
|
(*callback)(callback_arg, segs, nsegs, 0);
|
|
|
|
/*
|
|
* Return ENOMEM to the caller so that it can pass it up the stack.
|
|
* This error only happens when NOWAIT is set, so deferral is disabled.
|
|
*/
|
|
if (error == ENOMEM)
|
|
return (error);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_mbuf(bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m0,
|
|
bus_dmamap_callback2_t *callback, void *callback_arg, int flags)
|
|
{
|
|
bus_dma_segment_t *segs;
|
|
int nsegs, error;
|
|
|
|
M_ASSERTPKTHDR(m0);
|
|
|
|
#ifdef KMSAN
|
|
struct memdesc mem = memdesc_mbuf(m0);
|
|
_bus_dmamap_load_kmsan(dmat, map, &mem);
|
|
#endif
|
|
|
|
flags |= BUS_DMA_NOWAIT;
|
|
nsegs = -1;
|
|
error = _bus_dmamap_load_mbuf_sg(dmat, map, m0, NULL, &nsegs, flags);
|
|
++nsegs;
|
|
|
|
segs = _bus_dmamap_complete(dmat, map, NULL, nsegs, error);
|
|
if (error)
|
|
(*callback)(callback_arg, segs, 0, 0, error);
|
|
else
|
|
(*callback)(callback_arg, segs, nsegs, m0->m_pkthdr.len, error);
|
|
|
|
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
|
|
__func__, dmat, flags, error, nsegs);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_mbuf_sg(bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m0,
|
|
bus_dma_segment_t *segs, int *nsegs, int flags)
|
|
{
|
|
int error;
|
|
|
|
#ifdef KMSAN
|
|
struct memdesc mem = memdesc_mbuf(m0);
|
|
_bus_dmamap_load_kmsan(dmat, map, &mem);
|
|
#endif
|
|
|
|
flags |= BUS_DMA_NOWAIT;
|
|
*nsegs = -1;
|
|
error = _bus_dmamap_load_mbuf_sg(dmat, map, m0, segs, nsegs, flags);
|
|
++*nsegs;
|
|
_bus_dmamap_complete(dmat, map, segs, *nsegs, error);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_uio(bus_dma_tag_t dmat, bus_dmamap_t map, struct uio *uio,
|
|
bus_dmamap_callback2_t *callback, void *callback_arg, int flags)
|
|
{
|
|
bus_dma_segment_t *segs;
|
|
int nsegs, error;
|
|
|
|
#ifdef KMSAN
|
|
struct memdesc mem = memdesc_uio(uio);
|
|
_bus_dmamap_load_kmsan(dmat, map, &mem);
|
|
#endif
|
|
|
|
flags |= BUS_DMA_NOWAIT;
|
|
nsegs = -1;
|
|
error = _bus_dmamap_load_uio(dmat, map, uio, &nsegs, flags);
|
|
nsegs++;
|
|
|
|
segs = _bus_dmamap_complete(dmat, map, NULL, nsegs, error);
|
|
if (error)
|
|
(*callback)(callback_arg, segs, 0, 0, error);
|
|
else
|
|
(*callback)(callback_arg, segs, nsegs, uio->uio_resid, error);
|
|
|
|
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
|
|
__func__, dmat, flags, error, nsegs);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_bio(bus_dma_tag_t dmat, bus_dmamap_t map, struct bio *bio,
|
|
bus_dmamap_callback_t *callback, void *callback_arg,
|
|
int flags)
|
|
{
|
|
struct memdesc mem;
|
|
|
|
mem = memdesc_bio(bio);
|
|
return (bus_dmamap_load_mem(dmat, map, &mem, callback, callback_arg,
|
|
flags));
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_mem(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
struct memdesc *mem, bus_dmamap_callback_t *callback,
|
|
void *callback_arg, int flags)
|
|
{
|
|
bus_dma_segment_t *segs;
|
|
int error;
|
|
int nsegs;
|
|
|
|
#ifdef KMSAN
|
|
_bus_dmamap_load_kmsan(dmat, map, mem);
|
|
#endif
|
|
|
|
if ((flags & BUS_DMA_NOWAIT) == 0)
|
|
_bus_dmamap_waitok(dmat, map, mem, callback, callback_arg);
|
|
|
|
nsegs = -1;
|
|
error = 0;
|
|
switch (mem->md_type) {
|
|
case MEMDESC_VADDR:
|
|
error = _bus_dmamap_load_buffer(dmat, map, mem->u.md_vaddr,
|
|
mem->md_len, kernel_pmap, flags, NULL, &nsegs);
|
|
break;
|
|
case MEMDESC_PADDR:
|
|
error = _bus_dmamap_load_phys(dmat, map, mem->u.md_paddr,
|
|
mem->md_len, flags, NULL, &nsegs);
|
|
break;
|
|
case MEMDESC_VLIST:
|
|
error = _bus_dmamap_load_vlist(dmat, map, mem->u.md_list,
|
|
mem->md_nseg, kernel_pmap, &nsegs, flags, 0, SIZE_T_MAX);
|
|
break;
|
|
case MEMDESC_PLIST:
|
|
error = _bus_dmamap_load_plist(dmat, map, mem->u.md_list,
|
|
mem->md_nseg, &nsegs, flags);
|
|
break;
|
|
case MEMDESC_UIO:
|
|
error = _bus_dmamap_load_uio(dmat, map, mem->u.md_uio,
|
|
&nsegs, flags);
|
|
break;
|
|
case MEMDESC_MBUF:
|
|
error = _bus_dmamap_load_mbuf_sg(dmat, map, mem->u.md_mbuf,
|
|
NULL, &nsegs, flags);
|
|
break;
|
|
case MEMDESC_VMPAGES:
|
|
error = _bus_dmamap_load_ma(dmat, map, mem->u.md_ma,
|
|
mem->md_len, mem->md_offset, flags, NULL, &nsegs);
|
|
break;
|
|
}
|
|
nsegs++;
|
|
|
|
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
|
|
__func__, dmat, flags, error, nsegs);
|
|
|
|
if (error == EINPROGRESS)
|
|
return (error);
|
|
|
|
segs = _bus_dmamap_complete(dmat, map, NULL, nsegs, error);
|
|
if (error)
|
|
(*callback)(callback_arg, segs, 0, error);
|
|
else
|
|
(*callback)(callback_arg, segs, nsegs, 0);
|
|
|
|
/*
|
|
* Return ENOMEM to the caller so that it can pass it up the stack.
|
|
* This error only happens when NOWAIT is set, so deferral is disabled.
|
|
*/
|
|
if (error == ENOMEM)
|
|
return (error);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_crp_buffer(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
struct crypto_buffer *cb, bus_dmamap_callback_t *callback,
|
|
void *callback_arg, int flags)
|
|
{
|
|
bus_dma_segment_t *segs;
|
|
int error;
|
|
int nsegs;
|
|
|
|
flags |= BUS_DMA_NOWAIT;
|
|
nsegs = -1;
|
|
error = 0;
|
|
switch (cb->cb_type) {
|
|
case CRYPTO_BUF_CONTIG:
|
|
error = _bus_dmamap_load_buffer(dmat, map, cb->cb_buf,
|
|
cb->cb_buf_len, kernel_pmap, flags, NULL, &nsegs);
|
|
break;
|
|
case CRYPTO_BUF_MBUF:
|
|
error = _bus_dmamap_load_mbuf_sg(dmat, map, cb->cb_mbuf,
|
|
NULL, &nsegs, flags);
|
|
break;
|
|
case CRYPTO_BUF_SINGLE_MBUF:
|
|
error = _bus_dmamap_load_single_mbuf(dmat, map, cb->cb_mbuf,
|
|
NULL, &nsegs, flags);
|
|
break;
|
|
case CRYPTO_BUF_UIO:
|
|
error = _bus_dmamap_load_uio(dmat, map, cb->cb_uio, &nsegs,
|
|
flags);
|
|
break;
|
|
case CRYPTO_BUF_VMPAGE:
|
|
error = _bus_dmamap_load_ma(dmat, map, cb->cb_vm_page,
|
|
cb->cb_vm_page_len, cb->cb_vm_page_offset, flags, NULL,
|
|
&nsegs);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
nsegs++;
|
|
|
|
CTR5(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d nsegs %d",
|
|
__func__, dmat, flags, error, nsegs);
|
|
|
|
if (error == EINPROGRESS)
|
|
return (error);
|
|
|
|
segs = _bus_dmamap_complete(dmat, map, NULL, nsegs, error);
|
|
if (error)
|
|
(*callback)(callback_arg, segs, 0, error);
|
|
else
|
|
(*callback)(callback_arg, segs, nsegs, 0);
|
|
|
|
/*
|
|
* Return ENOMEM to the caller so that it can pass it up the stack.
|
|
* This error only happens when NOWAIT is set, so deferral is disabled.
|
|
*/
|
|
if (error == ENOMEM)
|
|
return (error);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
bus_dmamap_load_crp(bus_dma_tag_t dmat, bus_dmamap_t map, struct cryptop *crp,
|
|
bus_dmamap_callback_t *callback, void *callback_arg, int flags)
|
|
{
|
|
return (bus_dmamap_load_crp_buffer(dmat, map, &crp->crp_buf, callback,
|
|
callback_arg, flags));
|
|
}
|
|
|
|
void
|
|
bus_dma_template_init(bus_dma_template_t *t, bus_dma_tag_t parent)
|
|
{
|
|
|
|
if (t == NULL)
|
|
return;
|
|
|
|
t->parent = parent;
|
|
t->alignment = 1;
|
|
t->boundary = 0;
|
|
t->lowaddr = t->highaddr = BUS_SPACE_MAXADDR;
|
|
t->maxsize = t->maxsegsize = BUS_SPACE_MAXSIZE;
|
|
t->nsegments = BUS_SPACE_UNRESTRICTED;
|
|
t->lockfunc = NULL;
|
|
t->lockfuncarg = NULL;
|
|
t->flags = 0;
|
|
}
|
|
|
|
int
|
|
bus_dma_template_tag(bus_dma_template_t *t, bus_dma_tag_t *dmat)
|
|
{
|
|
|
|
if (t == NULL || dmat == NULL)
|
|
return (EINVAL);
|
|
|
|
return (bus_dma_tag_create(t->parent, t->alignment, t->boundary,
|
|
t->lowaddr, t->highaddr, NULL, NULL, t->maxsize,
|
|
t->nsegments, t->maxsegsize, t->flags, t->lockfunc, t->lockfuncarg,
|
|
dmat));
|
|
}
|
|
|
|
void
|
|
bus_dma_template_fill(bus_dma_template_t *t, bus_dma_param_t *kv, u_int count)
|
|
{
|
|
bus_dma_param_t *pkv;
|
|
|
|
while (count) {
|
|
pkv = &kv[--count];
|
|
switch (pkv->key) {
|
|
case BD_PARAM_PARENT:
|
|
t->parent = pkv->ptr;
|
|
break;
|
|
case BD_PARAM_ALIGNMENT:
|
|
t->alignment = pkv->num;
|
|
break;
|
|
case BD_PARAM_BOUNDARY:
|
|
t->boundary = pkv->num;
|
|
break;
|
|
case BD_PARAM_LOWADDR:
|
|
t->lowaddr = pkv->pa;
|
|
break;
|
|
case BD_PARAM_HIGHADDR:
|
|
t->highaddr = pkv->pa;
|
|
break;
|
|
case BD_PARAM_MAXSIZE:
|
|
t->maxsize = pkv->num;
|
|
break;
|
|
case BD_PARAM_NSEGMENTS:
|
|
t->nsegments = pkv->num;
|
|
break;
|
|
case BD_PARAM_MAXSEGSIZE:
|
|
t->maxsegsize = pkv->num;
|
|
break;
|
|
case BD_PARAM_FLAGS:
|
|
t->flags = pkv->num;
|
|
break;
|
|
case BD_PARAM_LOCKFUNC:
|
|
t->lockfunc = pkv->ptr;
|
|
break;
|
|
case BD_PARAM_LOCKFUNCARG:
|
|
t->lockfuncarg = pkv->ptr;
|
|
break;
|
|
case BD_PARAM_NAME:
|
|
t->name = pkv->ptr;
|
|
break;
|
|
case BD_PARAM_INVALID:
|
|
default:
|
|
KASSERT(0, ("Invalid key %d\n", pkv->key));
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
#ifndef IOMMU
|
|
bool bus_dma_iommu_set_buswide(device_t dev);
|
|
int bus_dma_iommu_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
vm_paddr_t start, vm_size_t length, int flags);
|
|
|
|
bool
|
|
bus_dma_iommu_set_buswide(device_t dev)
|
|
{
|
|
return (false);
|
|
}
|
|
|
|
int
|
|
bus_dma_iommu_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
vm_paddr_t start, vm_size_t length, int flags)
|
|
{
|
|
return (0);
|
|
}
|
|
#endif
|