eb36b1d0bc
--Remove special-case handling of sparc64 bus_dmamap* functions. Replace with a more generic mechanism that allows MD busdma implementations to generate inline mapping functions by defining WANT_INLINE_DMAMAP in <machine/bus_dma.h>. This is currently useful for sparc64, x86, and arm64, which all implement non-load dmamap operations as simple wrappers around map objects which may be bus- or device-specific. --Remove NULL-checked bus_dmamap macros. Implement the equivalent NULL checks in the inlined x86 implementation. For non-x86 platforms, these checks are a minor pessimization as those platforms do not currently allow NULL maps. NULL maps were originally allowed on arm64, which appears to have been the motivation behind adding arm[64]-specific barriers to bus_dma.h, but that support was removed in r299463. --Simplify the internal interface used by the bus_dmamap_load* variants and move it to bus_dma_internal.h --Fix some drivers that directly include sys/bus_dma.h despite the recommendations of bus_dma(9) Reviewed by: kib (previous revision), marius Differential Revision: https://reviews.freebsd.org/D10729
97 lines
4.0 KiB
C
97 lines
4.0 KiB
C
/*-
|
|
* Copyright (c) 2013 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
|
|
* under sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_BUS_DMA_IMPL_H_
|
|
#define _MACHINE_BUS_DMA_IMPL_H_
|
|
|
|
struct bus_dma_tag_common {
|
|
struct bus_dma_impl *impl;
|
|
struct bus_dma_tag_common *parent;
|
|
bus_size_t alignment;
|
|
bus_addr_t boundary;
|
|
bus_addr_t lowaddr;
|
|
bus_addr_t highaddr;
|
|
bus_dma_filter_t *filter;
|
|
void *filterarg;
|
|
bus_size_t maxsize;
|
|
u_int nsegments;
|
|
bus_size_t maxsegsz;
|
|
int flags;
|
|
bus_dma_lock_t *lockfunc;
|
|
void *lockfuncarg;
|
|
int ref_count;
|
|
};
|
|
|
|
struct bus_dma_impl {
|
|
int (*tag_create)(bus_dma_tag_t parent,
|
|
bus_size_t alignment, bus_addr_t boundary, bus_addr_t lowaddr,
|
|
bus_addr_t highaddr, bus_dma_filter_t *filter,
|
|
void *filterarg, bus_size_t maxsize, int nsegments,
|
|
bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
|
|
void *lockfuncarg, bus_dma_tag_t *dmat);
|
|
int (*tag_destroy)(bus_dma_tag_t dmat);
|
|
int (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp);
|
|
int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map);
|
|
int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags,
|
|
bus_dmamap_t *mapp);
|
|
void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map);
|
|
int (*load_ma)(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);
|
|
int (*load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
vm_paddr_t buf, bus_size_t buflen, int flags,
|
|
bus_dma_segment_t *segs, int *segp);
|
|
int (*load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
void *buf, bus_size_t buflen, struct pmap *pmap, int flags,
|
|
bus_dma_segment_t *segs, int *segp);
|
|
void (*map_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
struct memdesc *mem, bus_dmamap_callback_t *callback,
|
|
void *callback_arg);
|
|
bus_dma_segment_t *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
bus_dma_segment_t *segs, int nsegs, int error);
|
|
void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map);
|
|
void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map,
|
|
bus_dmasync_op_t op);
|
|
};
|
|
|
|
void bus_dma_dflt_lock(void *arg, bus_dma_lock_op_t op);
|
|
int bus_dma_run_filter(struct bus_dma_tag_common *dmat, bus_addr_t paddr);
|
|
int common_bus_dma_tag_create(struct bus_dma_tag_common *parent,
|
|
bus_size_t alignment,
|
|
bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr,
|
|
bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize,
|
|
int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc,
|
|
void *lockfuncarg, size_t sz, void **dmat);
|
|
|
|
extern struct bus_dma_impl bus_dma_bounce_impl;
|
|
|
|
#endif
|