066f913a94
Introduce ATA_CAM kernel option, turning ata(4) controller drivers into cam(4) interface modules. When enabled, this options deprecates all ata(4) peripheral drivers (ad, acd, ...) and interfaces and allows cam(4) drivers (ada, cd, ...) and interfaces to be natively used instead. As side effect of this, ata(4) mode setting code was completely rewritten to make controller API more strict and permit above change. While doing this, SATA revision was separated from PATA mode. It allows DMA-incapable SATA devices to operate and makes hw.ata.atapi_dma tunable work again. Also allow ata(4) controller drivers (except some specific or broken ones) to handle larger data transfers. Previous constraint of 64K was artificial and is not really required by PCI ATA BM specification or hardware. Submitted by: nwitehorn (powerpc part)
86 lines
2.4 KiB
Objective-C
86 lines
2.4 KiB
Objective-C
# Copyright (c) 2004 - 2008 Søren Schmidt <sos@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer,
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# without modification, immediately at the beginning of the file.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# $FreeBSD$
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/callout.h>
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#include <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <vm/uma.h>
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#include <machine/bus.h>
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#include <sys/ata.h>
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#include <dev/ata/ata-all.h>
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INTERFACE ata;
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CODE {
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static int ata_null_locking(device_t dev, int mode)
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{
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struct ata_channel *ch = device_get_softc(dev);
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return ch->unit;
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}
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};
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METHOD int locking {
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device_t channel;
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int mode;
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} DEFAULT ata_null_locking;
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HEADER {
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#define ATA_LF_LOCK 0x0001
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#define ATA_LF_UNLOCK 0x0002
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#define ATA_LF_WHICH 0x0004
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};
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CODE {
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static int ata_null_setmode(device_t dev, int target, int mode)
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{
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if (mode > ATA_PIO_MAX)
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return (ATA_PIO_MAX);
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return (mode);
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}
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};
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METHOD int setmode {
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device_t dev;
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int target;
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int mode;
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} DEFAULT ata_null_setmode;
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METHOD int getrev {
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device_t dev;
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int target;
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};
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METHOD void reset {
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device_t channel;
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} DEFAULT ata_generic_reset;
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METHOD int reinit {
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device_t dev;
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};
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