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Differential D17419 Diff 49760 sys/x86/iommu/busdma_dmar.c

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sys/x86/iommu/busdma_dmar.c

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* SUCH DAMAGE. * SUCH DAMAGE.
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__FBSDID("$FreeBSD$"); __FBSDID("$FreeBSD$");
#include <sys/param.h> #include <sys/param.h>
#include <sys/systm.h> #include <sys/systm.h>
#include <sys/domainset.h>
#include <sys/malloc.h> #include <sys/malloc.h>
#include <sys/bus.h> #include <sys/bus.h>
#include <sys/conf.h> #include <sys/conf.h>
#include <sys/interrupt.h> #include <sys/interrupt.h>
#include <sys/kernel.h> #include <sys/kernel.h>
#include <sys/ktr.h> #include <sys/ktr.h>
#include <sys/lock.h> #include <sys/lock.h>
#include <sys/proc.h> #include <sys/proc.h>
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dmar_bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp) dmar_bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp)
{ {
struct bus_dma_tag_dmar *tag; struct bus_dma_tag_dmar *tag;
struct bus_dmamap_dmar *map; struct bus_dmamap_dmar *map;
WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL, "%s", __func__); WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL, "%s", __func__);
tag = (struct bus_dma_tag_dmar *)dmat; tag = (struct bus_dma_tag_dmar *)dmat;
map = malloc_domain(sizeof(*map), M_DMAR_DMAMAP, map = malloc_domainset(sizeof(*map), M_DMAR_DMAMAP,
tag->common.domain, M_NOWAIT | M_ZERO); DOMAINSET_PREF(tag->common.domain), M_NOWAIT | M_ZERO);
if (map == NULL) { if (map == NULL) {
*mapp = NULL; *mapp = NULL;
return (ENOMEM); return (ENOMEM);
} }
if (tag->segments == NULL) { if (tag->segments == NULL) {
tag->segments = malloc_domain(sizeof(bus_dma_segment_t) * tag->segments = malloc_domainset(sizeof(bus_dma_segment_t) *
tag->common.nsegments, M_DMAR_DMAMAP, tag->common.nsegments, M_DMAR_DMAMAP,
tag->common.domain, M_NOWAIT); DOMAINSET_PREF(tag->common.domain), M_NOWAIT);
if (tag->segments == NULL) { if (tag->segments == NULL) {
free_domain(map, M_DMAR_DMAMAP); free_domain(map, M_DMAR_DMAMAP);
*mapp = NULL; *mapp = NULL;
return (ENOMEM); return (ENOMEM);
} }
} }
TAILQ_INIT(&map->map_entries); TAILQ_INIT(&map->map_entries);
map->tag = tag; map->tag = tag;
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VM_MEMATTR_DEFAULT; VM_MEMATTR_DEFAULT;
tag = (struct bus_dma_tag_dmar *)dmat; tag = (struct bus_dma_tag_dmar *)dmat;
map = (struct bus_dmamap_dmar *)*mapp; map = (struct bus_dmamap_dmar *)*mapp;
if (tag->common.maxsize < PAGE_SIZE && if (tag->common.maxsize < PAGE_SIZE &&
tag->common.alignment <= tag->common.maxsize && tag->common.alignment <= tag->common.maxsize &&
attr == VM_MEMATTR_DEFAULT) { attr == VM_MEMATTR_DEFAULT) {
*vaddr = malloc_domain(tag->common.maxsize, M_DEVBUF, *vaddr = malloc_domainset(tag->common.maxsize, M_DEVBUF,
tag->common.domain, mflags); DOMAINSET_PREF(tag->common.domain), mflags);
map->flags |= BUS_DMAMAP_DMAR_MALLOC; map->flags |= BUS_DMAMAP_DMAR_MALLOC;
} else { } else {
*vaddr = (void *)kmem_alloc_attr_domain(tag->common.domain, *vaddr = (void *)kmem_alloc_attr_domainset(
tag->common.maxsize, mflags, 0ul, BUS_SPACE_MAXADDR, DOMAINSET_PREF(tag->common.domain), tag->common.maxsize,
attr); mflags, 0ul, BUS_SPACE_MAXADDR, attr);
map->flags |= BUS_DMAMAP_DMAR_KMEM_ALLOC; map->flags |= BUS_DMAMAP_DMAR_KMEM_ALLOC;
} }
if (*vaddr == NULL) { if (*vaddr == NULL) {
dmar_bus_dmamap_destroy(dmat, *mapp); dmar_bus_dmamap_destroy(dmat, *mapp);
*mapp = NULL; *mapp = NULL;
return (ENOMEM); return (ENOMEM);
} }
return (0); return (0);
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