Differential D25574 Diff 74435 head/sys/x86/iommu/intel_drv.c

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head/sys/x86/iommu/intel_drv.c

Show First 20 Lines • Show All 246 Lines • ▼ Show 20 Lines	dmar_release_intr(device_t dev, struct dmar_unit *unit, int idx)
dmd->irq = -1;		dmd->irq = -1;
}		}

static void		static void
dmar_release_resources(device_t dev, struct dmar_unit *unit)		dmar_release_resources(device_t dev, struct dmar_unit *unit)
{		{
int i;		int i;

dmar_fini_busdma(unit);		iommu_fini_busdma(&unit->iommu);
dmar_fini_irt(unit);		dmar_fini_irt(unit);
dmar_fini_qi(unit);		dmar_fini_qi(unit);
dmar_fini_fault_log(unit);		dmar_fini_fault_log(unit);
for (i = 0; i < DMAR_INTR_TOTAL; i++)		for (i = 0; i < DMAR_INTR_TOTAL; i++)
dmar_release_intr(dev, unit, i);		dmar_release_intr(dev, unit, i);
if (unit->regs != NULL) {		if (unit->regs != NULL) {
bus_deactivate_resource(dev, SYS_RES_MEMORY, unit->reg_rid,		bus_deactivate_resource(dev, SYS_RES_MEMORY, unit->reg_rid,
unit->regs);		unit->regs);
▲ Show 20 Lines • Show All 144 Lines • ▼ Show 20 Lines
{		{
struct dmar_unit *unit;		struct dmar_unit *unit;
ACPI_DMAR_HARDWARE_UNIT *dmaru;		ACPI_DMAR_HARDWARE_UNIT *dmaru;
uint64_t timeout;		uint64_t timeout;
int i, error;		int i, error;

unit = device_get_softc(dev);		unit = device_get_softc(dev);
unit->dev = dev;		unit->dev = dev;
unit->unit = device_get_unit(dev);		unit->iommu.unit = device_get_unit(dev);
dmaru = dmar_find_by_index(unit->unit);		dmaru = dmar_find_by_index(unit->iommu.unit);
if (dmaru == NULL)		if (dmaru == NULL)
return (EINVAL);		return (EINVAL);
unit->segment = dmaru->Segment;		unit->segment = dmaru->Segment;
unit->base = dmaru->Address;		unit->base = dmaru->Address;
unit->reg_rid = DMAR_REG_RID;		unit->reg_rid = DMAR_REG_RID;
unit->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY,		unit->regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&unit->reg_rid, RF_ACTIVE);		&unit->reg_rid, RF_ACTIVE);
if (unit->regs == NULL) {		if (unit->regs == NULL) {
Show All 38 Lines	if (DMAR_HAS_QI(unit)) {
unit->intrs[DMAR_INTR_QI].disable_intr = dmar_disable_qi_intr;		unit->intrs[DMAR_INTR_QI].disable_intr = dmar_disable_qi_intr;
error = dmar_alloc_irq(dev, unit, DMAR_INTR_QI);		error = dmar_alloc_irq(dev, unit, DMAR_INTR_QI);
if (error != 0) {		if (error != 0) {
dmar_release_resources(dev, unit);		dmar_release_resources(dev, unit);
return (error);		return (error);
}		}
}		}

mtx_init(&unit->lock, "dmarhw", NULL, MTX_DEF);		mtx_init(&unit->iommu.lock, "dmarhw", NULL, MTX_DEF);
unit->domids = new_unrhdr(0, dmar_nd2mask(DMAR_CAP_ND(unit->hw_cap)),		unit->domids = new_unrhdr(0, dmar_nd2mask(DMAR_CAP_ND(unit->hw_cap)),
&unit->lock);		&unit->iommu.lock);
LIST_INIT(&unit->domains);		LIST_INIT(&unit->domains);

/*		/*
* 9.2 "Context Entry":		* 9.2 "Context Entry":
* When Caching Mode (CM) field is reported as Set, the		* When Caching Mode (CM) field is reported as Set, the
* domain-id value of zero is architecturally reserved.		* domain-id value of zero is architecturally reserved.
* Software must not use domain-id value of zero		* Software must not use domain-id value of zero
* when CM is Set.		* when CM is Set.
▲ Show 20 Lines • Show All 43 Lines • ▼ Show 20 Lines	if (error != 0) {
dmar_release_resources(dev, unit);		dmar_release_resources(dev, unit);
return (error);		return (error);
}		}
error = dmar_init_irt(unit);		error = dmar_init_irt(unit);
if (error != 0) {		if (error != 0) {
dmar_release_resources(dev, unit);		dmar_release_resources(dev, unit);
return (error);		return (error);
}		}
error = dmar_init_busdma(unit);		error = iommu_init_busdma(&unit->iommu);
if (error != 0) {		if (error != 0) {
dmar_release_resources(dev, unit);		dmar_release_resources(dev, unit);
return (error);		return (error);
}		}

#ifdef NOTYET		#ifdef NOTYET
DMAR_LOCK(unit);		DMAR_LOCK(unit);
error = dmar_enable_translation(unit);		error = dmar_enable_translation(unit);
▲ Show 20 Lines • Show All 48 Lines • ▼ Show 20 Lines	static driver_t dmar_driver = {
dmar_methods,		dmar_methods,
sizeof(struct dmar_unit),		sizeof(struct dmar_unit),
};		};

DRIVER_MODULE(dmar, acpi, dmar_driver, dmar_devclass, 0, 0);		DRIVER_MODULE(dmar, acpi, dmar_driver, dmar_devclass, 0, 0);
MODULE_DEPEND(dmar, acpi, 1, 1, 1);		MODULE_DEPEND(dmar, acpi, 1, 1, 1);

void		void
dmar_set_buswide_ctx(struct dmar_unit *unit, u_int busno)		dmar_set_buswide_ctx(struct iommu_unit *unit, u_int busno)
{		{
		struct dmar_unit *dmar;

		dmar = (struct dmar_unit *)unit;

MPASS(busno <= PCI_BUSMAX);		MPASS(busno <= PCI_BUSMAX);
DMAR_LOCK(unit);		DMAR_LOCK(dmar);
unit->buswide_ctxs[busno / NBBY / sizeof(uint32_t)] \|=		dmar->buswide_ctxs[busno / NBBY / sizeof(uint32_t)] \|=
1 << (busno % (NBBY * sizeof(uint32_t)));		1 << (busno % (NBBY * sizeof(uint32_t)));
DMAR_UNLOCK(unit);		DMAR_UNLOCK(dmar);
}		}

bool		bool
dmar_is_buswide_ctx(struct dmar_unit *unit, u_int busno)		dmar_is_buswide_ctx(struct dmar_unit *unit, u_int busno)
{		{

MPASS(busno <= PCI_BUSMAX);		MPASS(busno <= PCI_BUSMAX);
return ((unit->buswide_ctxs[busno / NBBY / sizeof(uint32_t)] &		return ((unit->buswide_ctxs[busno / NBBY / sizeof(uint32_t)] &
▲ Show 20 Lines • Show All 116 Lines • ▼ Show 20 Lines
dmar_match_by_path(struct dmar_unit *unit, int dev_domain, int dev_busno,		dmar_match_by_path(struct dmar_unit *unit, int dev_domain, int dev_busno,
const ACPI_DMAR_PCI_PATH dev_path, int dev_path_len, const char *banner)		const ACPI_DMAR_PCI_PATH dev_path, int dev_path_len, const char *banner)
{		{
ACPI_DMAR_HARDWARE_UNIT *dmarh;		ACPI_DMAR_HARDWARE_UNIT *dmarh;
ACPI_DMAR_DEVICE_SCOPE *devscope;		ACPI_DMAR_DEVICE_SCOPE *devscope;
char ptr, ptrend;		char ptr, ptrend;
int match;		int match;

dmarh = dmar_find_by_index(unit->unit);		dmarh = dmar_find_by_index(unit->iommu.unit);
if (dmarh == NULL)		if (dmarh == NULL)
return (false);		return (false);
if (dmarh->Segment != dev_domain)		if (dmarh->Segment != dev_domain)
return (false);		return (false);
if ((dmarh->Flags & ACPI_DMAR_INCLUDE_ALL) != 0) {		if ((dmarh->Flags & ACPI_DMAR_INCLUDE_ALL) != 0) {
if (banner != NULL)		if (banner != NULL)
*banner = "INCLUDE_ALL";		*banner = "INCLUDE_ALL";
return (true);		return (true);
▲ Show 20 Lines • Show All 65 Lines • ▼ Show 20 Lines	if (dmar_match_by_path(unit, dev_domain, dev_busno,
break;		break;
}		}
if (i == dmar_devcnt)		if (i == dmar_devcnt)
return (NULL);		return (NULL);

if (verbose) {		if (verbose) {
device_printf(dev, "pci%d:%d:%d:%d matched dmar%d by %s",		device_printf(dev, "pci%d:%d:%d:%d matched dmar%d by %s",
dev_domain, pci_get_bus(dev), pci_get_slot(dev),		dev_domain, pci_get_bus(dev), pci_get_slot(dev),
pci_get_function(dev), unit->unit, banner);		pci_get_function(dev), unit->iommu.unit, banner);
printf(" scope path ");		printf(" scope path ");
dmar_print_path(dev_busno, dev_path_len, dev_path);		dmar_print_path(dev_busno, dev_path_len, dev_path);
printf("\n");		printf("\n");
}		}
return (unit);		return (unit);
}		}

static struct dmar_unit *		static struct dmar_unit *
▲ Show 20 Lines • Show All 76 Lines • ▼ Show 20 Lines
}		}

struct rmrr_iter_args {		struct rmrr_iter_args {
struct dmar_domain *domain;		struct dmar_domain *domain;
int dev_domain;		int dev_domain;
int dev_busno;		int dev_busno;
const ACPI_DMAR_PCI_PATH *dev_path;		const ACPI_DMAR_PCI_PATH *dev_path;
int dev_path_len;		int dev_path_len;
struct dmar_map_entries_tailq *rmrr_entries;		struct iommu_map_entries_tailq *rmrr_entries;
};		};

static int		static int
dmar_rmrr_iter(ACPI_DMAR_HEADER dmarh, void arg)		dmar_rmrr_iter(ACPI_DMAR_HEADER dmarh, void arg)
{		{
struct rmrr_iter_args *ria;		struct rmrr_iter_args *ria;
ACPI_DMAR_RESERVED_MEMORY *resmem;		ACPI_DMAR_RESERVED_MEMORY *resmem;
ACPI_DMAR_DEVICE_SCOPE *devscope;		ACPI_DMAR_DEVICE_SCOPE *devscope;
struct dmar_map_entry *entry;		struct iommu_map_entry *entry;
char ptr, ptrend;		char ptr, ptrend;
int match;		int match;

if (dmarh->Type != ACPI_DMAR_TYPE_RESERVED_MEMORY)		if (dmarh->Type != ACPI_DMAR_TYPE_RESERVED_MEMORY)
return (1);		return (1);

ria = arg;		ria = arg;
resmem = (ACPI_DMAR_RESERVED_MEMORY *)dmarh;		resmem = (ACPI_DMAR_RESERVED_MEMORY *)dmarh;
Show All 21 Lines	dmar_rmrr_iter(ACPI_DMAR_HEADER dmarh, void arg)
}		}

return (1);		return (1);
}		}

void		void
dmar_dev_parse_rmrr(struct dmar_domain *domain, int dev_domain, int dev_busno,		dmar_dev_parse_rmrr(struct dmar_domain *domain, int dev_domain, int dev_busno,
const void *dev_path, int dev_path_len,		const void *dev_path, int dev_path_len,
struct dmar_map_entries_tailq *rmrr_entries)		struct iommu_map_entries_tailq *rmrr_entries)
{		{
struct rmrr_iter_args ria;		struct rmrr_iter_args ria;

ria.domain = domain;		ria.domain = domain;
ria.dev_domain = dev_domain;		ria.dev_domain = dev_domain;
ria.dev_busno = dev_busno;		ria.dev_busno = dev_busno;
ria.dev_path = (const ACPI_DMAR_PCI_PATH *)dev_path;		ria.dev_path = (const ACPI_DMAR_PCI_PATH *)dev_path;
ria.dev_path_len = dev_path_len;		ria.dev_path_len = dev_path_len;
▲ Show 20 Lines • Show All 62 Lines • ▼ Show 20 Lines	dev_path_len = (devscope->Length -
sizeof(ACPI_DMAR_DEVICE_SCOPE)) / 2;		sizeof(ACPI_DMAR_DEVICE_SCOPE)) / 2;
dev = dmar_path_dev(resmem->Segment, dev_path_len,		dev = dmar_path_dev(resmem->Segment, dev_path_len,
devscope->Bus,		devscope->Bus,
(const ACPI_DMAR_PCI_PATH *)(devscope + 1), &rid);		(const ACPI_DMAR_PCI_PATH *)(devscope + 1), &rid);
if (dev == NULL) {		if (dev == NULL) {
if (bootverbose) {		if (bootverbose) {
printf("dmar%d no dev found for RMRR "		printf("dmar%d no dev found for RMRR "
"[%#jx, %#jx] rid %#x scope path ",		"[%#jx, %#jx] rid %#x scope path ",
iria->dmar->unit,		iria->dmar->iommu.unit,
(uintmax_t)resmem->BaseAddress,		(uintmax_t)resmem->BaseAddress,
(uintmax_t)resmem->EndAddress,		(uintmax_t)resmem->EndAddress,
rid);		rid);
dmar_print_path(devscope->Bus, dev_path_len,		dmar_print_path(devscope->Bus, dev_path_len,
(const ACPI_DMAR_PCI_PATH *)(devscope + 1));		(const ACPI_DMAR_PCI_PATH *)(devscope + 1));
printf("\n");		printf("\n");
}		}
unit = dmar_find_by_scope(resmem->Segment,		unit = dmar_find_by_scope(resmem->Segment,
devscope->Bus,		devscope->Bus,
(const ACPI_DMAR_PCI_PATH *)(devscope + 1),		(const ACPI_DMAR_PCI_PATH *)(devscope + 1),
dev_path_len);		dev_path_len);
if (iria->dmar != unit)		if (iria->dmar != unit)
continue;		continue;
dmar_get_ctx_for_devpath(iria->dmar, rid,		dmar_get_ctx_for_devpath(iria->dmar, rid,
resmem->Segment, devscope->Bus,		resmem->Segment, devscope->Bus,
(const ACPI_DMAR_PCI_PATH *)(devscope + 1),		(const ACPI_DMAR_PCI_PATH *)(devscope + 1),
dev_path_len, false, true);		dev_path_len, false, true);
} else {		} else {
unit = dmar_find(dev, false);		unit = dmar_find(dev, false);
if (iria->dmar != unit)		if (iria->dmar != unit)
continue;		continue;
dmar_instantiate_ctx(iria->dmar, dev, true);		iommu_instantiate_ctx(&(iria)->dmar->iommu,
		dev, true);
}		}
}		}

return (1);		return (1);

}		}

/*		/*
* Pre-create all contexts for the DMAR which have RMRR entries.		* Pre-create all contexts for the DMAR which have RMRR entries.
*/		*/
int		int
dmar_instantiate_rmrr_ctxs(struct dmar_unit *dmar)		dmar_instantiate_rmrr_ctxs(struct iommu_unit *unit)
{		{
		struct dmar_unit *dmar;
struct inst_rmrr_iter_args iria;		struct inst_rmrr_iter_args iria;
int error;		int error;

		dmar = (struct dmar_unit *)unit;

if (!dmar_barrier_enter(dmar, DMAR_BARRIER_RMRR))		if (!dmar_barrier_enter(dmar, DMAR_BARRIER_RMRR))
return (0);		return (0);

error = 0;		error = 0;
iria.dmar = dmar;		iria.dmar = dmar;
dmar_iterate_tbl(dmar_inst_rmrr_iter, &iria);		dmar_iterate_tbl(dmar_inst_rmrr_iter, &iria);
DMAR_LOCK(dmar);		DMAR_LOCK(dmar);
if (!LIST_EMPTY(&dmar->domains)) {		if (!LIST_EMPTY(&dmar->domains)) {
KASSERT((dmar->hw_gcmd & DMAR_GCMD_TE) == 0,		KASSERT((dmar->hw_gcmd & DMAR_GCMD_TE) == 0,
("dmar%d: RMRR not handled but translation is already enabled",		("dmar%d: RMRR not handled but translation is already enabled",
dmar->unit));		dmar->iommu.unit));
error = dmar_enable_translation(dmar);		error = dmar_enable_translation(dmar);
if (bootverbose) {		if (bootverbose) {
if (error == 0) {		if (error == 0) {
printf("dmar%d: enabled translation\n",		printf("dmar%d: enabled translation\n",
dmar->unit);		dmar->iommu.unit);
} else {		} else {
printf("dmar%d: enabling translation failed, "		printf("dmar%d: enabling translation failed, "
"error %d\n", dmar->unit, error);		"error %d\n", dmar->iommu.unit, error);
}		}
}		}
}		}
dmar_barrier_exit(dmar, DMAR_BARRIER_RMRR);		dmar_barrier_exit(dmar, DMAR_BARRIER_RMRR);
return (error);		return (error);
}		}

#ifdef DDB		#ifdef DDB
#include <ddb/ddb.h>		#include <ddb/ddb.h>
#include <ddb/db_lex.h>		#include <ddb/db_lex.h>

static void		static void
dmar_print_domain_entry(const struct dmar_map_entry *entry)		dmar_print_domain_entry(const struct iommu_map_entry *entry)
{		{
struct dmar_map_entry l, r;		struct iommu_map_entry l, r;

db_printf(		db_printf(
" start %jx end %jx first %jx last %jx free_down %jx flags %x ",		" start %jx end %jx first %jx last %jx free_down %jx flags %x ",
entry->start, entry->end, entry->first, entry->last,		entry->start, entry->end, entry->first, entry->last,
entry->free_down, entry->flags);		entry->free_down, entry->flags);
db_printf("left ");		db_printf("left ");
l = RB_LEFT(entry, rb_entry);		l = RB_LEFT(entry, rb_entry);
if (l == NULL)		if (l == NULL)
Show All 10 Lines
}		}

static void		static void
dmar_print_ctx(struct dmar_ctx *ctx)		dmar_print_ctx(struct dmar_ctx *ctx)
{		{

db_printf(		db_printf(
" @%p pci%d:%d:%d refs %d flags %x loads %lu unloads %lu\n",		" @%p pci%d:%d:%d refs %d flags %x loads %lu unloads %lu\n",
ctx, pci_get_bus(ctx->ctx_tag.owner),		ctx, pci_get_bus(ctx->context.tag->owner),
pci_get_slot(ctx->ctx_tag.owner),		pci_get_slot(ctx->context.tag->owner),
pci_get_function(ctx->ctx_tag.owner), ctx->refs, ctx->flags,		pci_get_function(ctx->context.tag->owner), ctx->refs,
ctx->loads, ctx->unloads);		ctx->context.flags, ctx->context.loads, ctx->context.unloads);
}		}

static void		static void
dmar_print_domain(struct dmar_domain *domain, bool show_mappings)		dmar_print_domain(struct dmar_domain *domain, bool show_mappings)
{		{
struct dmar_map_entry *entry;		struct iommu_map_entry *entry;
struct dmar_ctx *ctx;		struct dmar_ctx *ctx;

db_printf(		db_printf(
" @%p dom %d mgaw %d agaw %d pglvl %d end %jx refs %d\n"		" @%p dom %d mgaw %d agaw %d pglvl %d end %jx refs %d\n"
" ctx_cnt %d flags %x pgobj %p map_ents %u\n",		" ctx_cnt %d flags %x pgobj %p map_ents %u\n",
domain, domain->domain, domain->mgaw, domain->agaw, domain->pglvl,		domain, domain->domain, domain->mgaw, domain->agaw, domain->pglvl,
(uintmax_t)domain->end, domain->refs, domain->ctx_cnt,		(uintmax_t)domain->end, domain->refs, domain->ctx_cnt,
domain->flags, domain->pgtbl_obj, domain->entries_cnt);		domain->flags, domain->pgtbl_obj, domain->entries_cnt);
if (!LIST_EMPTY(&domain->contexts)) {		if (!LIST_EMPTY(&domain->contexts)) {
db_printf(" Contexts:\n");		db_printf(" Contexts:\n");
LIST_FOREACH(ctx, &domain->contexts, link)		LIST_FOREACH(ctx, &domain->contexts, link)
dmar_print_ctx(ctx);		dmar_print_ctx(ctx);
}		}
if (!show_mappings)		if (!show_mappings)
return;		return;
db_printf(" mapped:\n");		db_printf(" mapped:\n");
RB_FOREACH(entry, dmar_gas_entries_tree, &domain->rb_root) {		RB_FOREACH(entry, dmar_gas_entries_tree, &domain->rb_root) {
dmar_print_domain_entry(entry);		dmar_print_domain_entry(entry);
if (db_pager_quit)		if (db_pager_quit)
break;		break;
}		}
if (db_pager_quit)		if (db_pager_quit)
return;		return;
db_printf(" unloading:\n");		db_printf(" unloading:\n");
TAILQ_FOREACH(entry, &domain->unload_entries, dmamap_link) {		TAILQ_FOREACH(entry, &domain->iodom.unload_entries, dmamap_link) {
dmar_print_domain_entry(entry);		dmar_print_domain_entry(entry);
if (db_pager_quit)		if (db_pager_quit)
break;		break;
}		}
}		}

DB_FUNC(dmar_domain, db_dmar_print_domain, db_show_table, CS_OWN, NULL)		DB_FUNC(dmar_domain, db_dmar_print_domain, db_show_table, CS_OWN, NULL)
{		{
▲ Show 20 Lines • Show All 44 Lines • ▼ Show 20 Lines	db_printf("usage: show dmar_domain [/m] "
"<domain> <bus> <device> <func>\n");		"<domain> <bus> <device> <func>\n");
return;		return;
}		}
for (i = 0; i < dmar_devcnt; i++) {		for (i = 0; i < dmar_devcnt; i++) {
unit = device_get_softc(dmar_devs[i]);		unit = device_get_softc(dmar_devs[i]);
LIST_FOREACH(domain, &unit->domains, link) {		LIST_FOREACH(domain, &unit->domains, link) {
LIST_FOREACH(ctx, &domain->contexts, link) {		LIST_FOREACH(ctx, &domain->contexts, link) {
if (pci_domain == unit->segment &&		if (pci_domain == unit->segment &&
bus == pci_get_bus(ctx->ctx_tag.owner) &&		bus == pci_get_bus(ctx->context.tag->owner) &&
device ==		device ==
pci_get_slot(ctx->ctx_tag.owner) &&		pci_get_slot(ctx->context.tag->owner) &&
function ==		function ==
pci_get_function(ctx->ctx_tag.owner)) {		pci_get_function(ctx->context.tag->owner)) {
dmar_print_domain(domain,		dmar_print_domain(domain,
show_mappings);		show_mappings);
goto out;		goto out;
}		}
}		}
}		}
}		}
out:;		out:;
}		}

static void		static void
dmar_print_one(int idx, bool show_domains, bool show_mappings)		dmar_print_one(int idx, bool show_domains, bool show_mappings)
{		{
struct dmar_unit *unit;		struct dmar_unit *unit;
struct dmar_domain *domain;		struct dmar_domain *domain;
int i, frir;		int i, frir;

unit = device_get_softc(dmar_devs[idx]);		unit = device_get_softc(dmar_devs[idx]);
db_printf("dmar%d at %p, root at 0x%jx, ver 0x%x\n", unit->unit, unit,		db_printf("dmar%d at %p, root at 0x%jx, ver 0x%x\n", unit->iommu.unit,
dmar_read8(unit, DMAR_RTADDR_REG), dmar_read4(unit, DMAR_VER_REG));		unit, dmar_read8(unit, DMAR_RTADDR_REG),
		dmar_read4(unit, DMAR_VER_REG));
db_printf("cap 0x%jx ecap 0x%jx gsts 0x%x fsts 0x%x fectl 0x%x\n",		db_printf("cap 0x%jx ecap 0x%jx gsts 0x%x fsts 0x%x fectl 0x%x\n",
(uintmax_t)dmar_read8(unit, DMAR_CAP_REG),		(uintmax_t)dmar_read8(unit, DMAR_CAP_REG),
(uintmax_t)dmar_read8(unit, DMAR_ECAP_REG),		(uintmax_t)dmar_read8(unit, DMAR_ECAP_REG),
dmar_read4(unit, DMAR_GSTS_REG),		dmar_read4(unit, DMAR_GSTS_REG),
dmar_read4(unit, DMAR_FSTS_REG),		dmar_read4(unit, DMAR_FSTS_REG),
dmar_read4(unit, DMAR_FECTL_REG));		dmar_read4(unit, DMAR_FECTL_REG));
if (unit->ir_enabled) {		if (unit->ir_enabled) {
db_printf("ir is enabled; IRT @%p phys 0x%jx maxcnt %d\n",		db_printf("ir is enabled; IRT @%p phys 0x%jx maxcnt %d\n",
▲ Show 20 Lines • Show All 70 Lines • ▼ Show 20 Lines	DB_SHOW_ALL_COMMAND(dmars, db_show_all_dmars)

for (i = 0; i < dmar_devcnt; i++) {		for (i = 0; i < dmar_devcnt; i++) {
dmar_print_one(i, show_domains, show_mappings);		dmar_print_one(i, show_domains, show_mappings);
if (db_pager_quit)		if (db_pager_quit)
break;		break;
}		}
}		}
#endif		#endif

		struct iommu_unit *
		iommu_find(device_t dev, bool verbose)
		{
		struct dmar_unit *dmar;

		dmar = dmar_find(dev, verbose);

		return (&dmar->iommu);
		}