5bb84bc84b
- Prefer '_' to ' ', as it results in more easily parsed results in memory monitoring tools such as vmstat. - Remove punctuation that is incompatible with using memory type names as file names, such as '/' characters. - Disambiguate some collisions by adding subsystem prefixes to some memory types. - Generally prefer lower case to upper case. - If the same type is defined in multiple architecture directories, attempt to use the same name in additional cases. Not all instances were caught in this change, so more work is required to finish this conversion. Similar changes are required for UMA zone names.
283 lines
8.3 KiB
C
283 lines
8.3 KiB
C
/*-
|
|
* Copyright (c) 1998 - 2005 Søren Schmidt <sos@FreeBSD.org>
|
|
* 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,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 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.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/ata.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/endian.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/sema.h>
|
|
#include <sys/taskqueue.h>
|
|
#include <vm/uma.h>
|
|
#include <sys/bus.h>
|
|
#include <machine/bus.h>
|
|
#include <sys/rman.h>
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/ata/ata-all.h>
|
|
#include <dev/ata/ata-pci.h>
|
|
|
|
/* prototypes */
|
|
static void ata_dmaalloc(device_t);
|
|
static void ata_dmafree(device_t);
|
|
static void ata_dmasetprd(void *, bus_dma_segment_t *, int, int);
|
|
static int ata_dmaload(device_t, caddr_t, int32_t, int, void *, int *);
|
|
static int ata_dmaunload(device_t);
|
|
|
|
/* local vars */
|
|
static MALLOC_DEFINE(M_ATADMA, "ata_dma", "ATA driver DMA");
|
|
|
|
/* misc defines */
|
|
#define MAXTABSZ PAGE_SIZE
|
|
#define MAXWSPCSZ PAGE_SIZE*2
|
|
|
|
struct ata_dc_cb_args {
|
|
bus_addr_t maddr;
|
|
int error;
|
|
};
|
|
|
|
void
|
|
ata_dmainit(device_t dev)
|
|
{
|
|
struct ata_channel *ch = device_get_softc(dev);
|
|
|
|
if ((ch->dma = malloc(sizeof(struct ata_dma), M_ATADMA, M_NOWAIT|M_ZERO))) {
|
|
ch->dma->alloc = ata_dmaalloc;
|
|
ch->dma->free = ata_dmafree;
|
|
ch->dma->setprd = ata_dmasetprd;
|
|
ch->dma->load = ata_dmaload;
|
|
ch->dma->unload = ata_dmaunload;
|
|
ch->dma->alignment = 2;
|
|
ch->dma->boundary = 128 * DEV_BSIZE;
|
|
ch->dma->segsize = 128 * DEV_BSIZE;
|
|
ch->dma->max_iosize = 128 * DEV_BSIZE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ata_dmasetupc_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
|
|
{
|
|
struct ata_dc_cb_args *cba = (struct ata_dc_cb_args *)xsc;
|
|
|
|
if (!(cba->error = error))
|
|
cba->maddr = segs[0].ds_addr;
|
|
}
|
|
|
|
static void
|
|
ata_dmaalloc(device_t dev)
|
|
{
|
|
struct ata_channel *ch = device_get_softc(dev);
|
|
struct ata_dc_cb_args ccba;
|
|
|
|
if (bus_dma_tag_create(NULL, ch->dma->alignment, 0,
|
|
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
|
|
NULL, NULL, ch->dma->max_iosize,
|
|
ATA_DMA_ENTRIES, ch->dma->segsize,
|
|
0, NULL, NULL, &ch->dma->dmatag))
|
|
goto error;
|
|
|
|
if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, PAGE_SIZE,
|
|
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
|
|
NULL, NULL, MAXTABSZ, 1, MAXTABSZ,
|
|
0, NULL, NULL, &ch->dma->sg_tag))
|
|
goto error;
|
|
|
|
if (bus_dma_tag_create(ch->dma->dmatag,ch->dma->alignment,ch->dma->boundary,
|
|
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
|
|
NULL, NULL, ch->dma->max_iosize,
|
|
ATA_DMA_ENTRIES, ch->dma->segsize,
|
|
BUS_DMA_ALLOCNOW, NULL, NULL, &ch->dma->data_tag))
|
|
goto error;
|
|
|
|
if (bus_dmamem_alloc(ch->dma->sg_tag, (void **)&ch->dma->sg, 0,
|
|
&ch->dma->sg_map))
|
|
goto error;
|
|
|
|
if (bus_dmamap_load(ch->dma->sg_tag, ch->dma->sg_map, ch->dma->sg,
|
|
MAXTABSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
|
|
bus_dmamem_free(ch->dma->sg_tag, ch->dma->sg, ch->dma->sg_map);
|
|
goto error;
|
|
}
|
|
ch->dma->sg_bus = ccba.maddr;
|
|
|
|
if (bus_dmamap_create(ch->dma->data_tag, 0, &ch->dma->data_map))
|
|
goto error;
|
|
|
|
if (bus_dma_tag_create(ch->dma->dmatag, PAGE_SIZE, 64 * 1024,
|
|
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
|
|
NULL, NULL, MAXWSPCSZ, 1, MAXWSPCSZ,
|
|
0, NULL, NULL, &ch->dma->work_tag))
|
|
goto error;
|
|
|
|
if (bus_dmamem_alloc(ch->dma->work_tag, (void **)&ch->dma->work, 0,
|
|
&ch->dma->work_map))
|
|
goto error;
|
|
|
|
if (bus_dmamap_load(ch->dma->work_tag, ch->dma->work_map,ch->dma->work,
|
|
MAXWSPCSZ, ata_dmasetupc_cb, &ccba, 0) || ccba.error) {
|
|
bus_dmamem_free(ch->dma->work_tag,ch->dma->work, ch->dma->work_map);
|
|
goto error;
|
|
}
|
|
ch->dma->work_bus = ccba.maddr;
|
|
|
|
return;
|
|
|
|
error:
|
|
device_printf(dev, "WARNING - DMA allocation failed, disabling DMA\n");
|
|
ata_dmafree(dev);
|
|
free(ch->dma, M_ATADMA);
|
|
ch->dma = NULL;
|
|
}
|
|
|
|
static void
|
|
ata_dmafree(device_t dev)
|
|
{
|
|
struct ata_channel *ch = device_get_softc(dev);
|
|
|
|
if (ch->dma->work_bus) {
|
|
bus_dmamap_unload(ch->dma->work_tag, ch->dma->work_map);
|
|
bus_dmamem_free(ch->dma->work_tag, ch->dma->work, ch->dma->work_map);
|
|
ch->dma->work_bus = 0;
|
|
ch->dma->work_map = NULL;
|
|
ch->dma->work = NULL;
|
|
}
|
|
if (ch->dma->work_tag) {
|
|
bus_dma_tag_destroy(ch->dma->work_tag);
|
|
ch->dma->work_tag = NULL;
|
|
}
|
|
if (ch->dma->sg_bus) {
|
|
bus_dmamap_unload(ch->dma->sg_tag, ch->dma->sg_map);
|
|
bus_dmamem_free(ch->dma->sg_tag, ch->dma->sg, ch->dma->sg_map);
|
|
ch->dma->sg_bus = 0;
|
|
ch->dma->sg_map = NULL;
|
|
ch->dma->sg = NULL;
|
|
}
|
|
if (ch->dma->data_map) {
|
|
bus_dmamap_destroy(ch->dma->data_tag, ch->dma->data_map);
|
|
ch->dma->data_map = NULL;
|
|
}
|
|
if (ch->dma->sg_tag) {
|
|
bus_dma_tag_destroy(ch->dma->sg_tag);
|
|
ch->dma->sg_tag = NULL;
|
|
}
|
|
if (ch->dma->data_tag) {
|
|
bus_dma_tag_destroy(ch->dma->data_tag);
|
|
ch->dma->data_tag = NULL;
|
|
}
|
|
if (ch->dma->dmatag) {
|
|
bus_dma_tag_destroy(ch->dma->dmatag);
|
|
ch->dma->dmatag = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ata_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
|
|
{
|
|
struct ata_dmasetprd_args *args = xsc;
|
|
struct ata_dma_prdentry *prd = args->dmatab;
|
|
int i;
|
|
|
|
if ((args->error = error))
|
|
return;
|
|
|
|
for (i = 0; i < nsegs; i++) {
|
|
prd[i].addr = htole32(segs[i].ds_addr);
|
|
prd[i].count = htole32(segs[i].ds_len);
|
|
}
|
|
prd[i - 1].count |= htole32(ATA_DMA_EOT);
|
|
args->nsegs = nsegs;
|
|
}
|
|
|
|
static int
|
|
ata_dmaload(device_t dev, caddr_t data, int32_t count, int dir,
|
|
void *addr, int *entries)
|
|
{
|
|
struct ata_channel *ch = device_get_softc(dev);
|
|
struct ata_dmasetprd_args cba;
|
|
|
|
if (ch->dma->flags & ATA_DMA_LOADED) {
|
|
device_printf(dev, "FAILURE - already active DMA on this device\n");
|
|
return -1;
|
|
}
|
|
if (!count) {
|
|
device_printf(dev, "FAILURE - zero length DMA transfer attempted\n");
|
|
return -1;
|
|
}
|
|
if (((uintptr_t)data & (ch->dma->alignment - 1)) ||
|
|
(count & (ch->dma->alignment - 1))) {
|
|
device_printf(dev, "FAILURE - non aligned DMA transfer attempted\n");
|
|
return -1;
|
|
}
|
|
if (count > ch->dma->max_iosize) {
|
|
device_printf(dev, "FAILURE - oversized DMA transfer attempt %d > %d\n",
|
|
count, ch->dma->max_iosize);
|
|
return -1;
|
|
}
|
|
|
|
cba.dmatab = addr;
|
|
|
|
if (bus_dmamap_load(ch->dma->data_tag, ch->dma->data_map, data, count,
|
|
ch->dma->setprd, &cba, 0) || cba.error)
|
|
return -1;
|
|
|
|
*entries = cba.nsegs;
|
|
|
|
bus_dmamap_sync(ch->dma->sg_tag, ch->dma->sg_map, BUS_DMASYNC_PREWRITE);
|
|
|
|
bus_dmamap_sync(ch->dma->data_tag, ch->dma->data_map,
|
|
dir ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
|
|
|
|
ch->dma->cur_iosize = count;
|
|
ch->dma->flags = dir ? (ATA_DMA_LOADED | ATA_DMA_READ) : ATA_DMA_LOADED;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
ata_dmaunload(device_t dev)
|
|
{
|
|
struct ata_channel *ch = device_get_softc(dev);
|
|
|
|
if (ch->dma->flags & ATA_DMA_LOADED) {
|
|
bus_dmamap_sync(ch->dma->sg_tag, ch->dma->sg_map,
|
|
BUS_DMASYNC_POSTWRITE);
|
|
|
|
bus_dmamap_sync(ch->dma->data_tag, ch->dma->data_map,
|
|
(ch->dma->flags & ATA_DMA_READ) != 0 ?
|
|
BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(ch->dma->data_tag, ch->dma->data_map);
|
|
|
|
ch->dma->cur_iosize = 0;
|
|
ch->dma->flags &= ~ATA_DMA_LOADED;
|
|
}
|
|
return 0;
|
|
}
|