Differential D25972 Diff 75488 head/sys/x86/iommu/intel_ctx.c

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head/sys/x86/iommu/intel_ctx.c

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#include <x86/include/busdma_impl.h>		#include <x86/include/busdma_impl.h>
#include <dev/iommu/busdma_iommu.h>		#include <dev/iommu/busdma_iommu.h>
#include <x86/iommu/intel_reg.h>		#include <x86/iommu/intel_reg.h>
#include <x86/iommu/intel_dmar.h>		#include <x86/iommu/intel_dmar.h>

static MALLOC_DEFINE(M_DMAR_CTX, "dmar_ctx", "Intel DMAR Context");		static MALLOC_DEFINE(M_DMAR_CTX, "dmar_ctx", "Intel DMAR Context");
static MALLOC_DEFINE(M_DMAR_DOMAIN, "dmar_dom", "Intel DMAR Domain");		static MALLOC_DEFINE(M_DMAR_DOMAIN, "dmar_dom", "Intel DMAR Domain");

static void dmar_domain_unload_task(void *arg, int pending);
static void dmar_unref_domain_locked(struct dmar_unit *dmar,		static void dmar_unref_domain_locked(struct dmar_unit *dmar,
struct dmar_domain *domain);		struct dmar_domain *domain);
static void dmar_domain_destroy(struct dmar_domain *domain);		static void dmar_domain_destroy(struct dmar_domain *domain);

static void		static void
dmar_ensure_ctx_page(struct dmar_unit *dmar, int bus)		dmar_ensure_ctx_page(struct dmar_unit *dmar, int bus)
{		{
struct sf_buf *sf;		struct sf_buf *sf;
▲ Show 20 Lines • Show All 243 Lines • ▼ Show 20 Lines	dmar_domain_alloc(struct dmar_unit *dmar, bool id_mapped)
id = alloc_unr(dmar->domids);		id = alloc_unr(dmar->domids);
if (id == -1)		if (id == -1)
return (NULL);		return (NULL);
domain = malloc(sizeof(*domain), M_DMAR_DOMAIN, M_WAITOK \| M_ZERO);		domain = malloc(sizeof(*domain), M_DMAR_DOMAIN, M_WAITOK \| M_ZERO);
iodom = DOM2IODOM(domain);		iodom = DOM2IODOM(domain);
unit = DMAR2IOMMU(dmar);		unit = DMAR2IOMMU(dmar);
domain->domain = id;		domain->domain = id;
LIST_INIT(&domain->contexts);		LIST_INIT(&domain->contexts);
TASK_INIT(&domain->iodom.unload_task, 0, dmar_domain_unload_task,
domain);
iommu_domain_init(unit, iodom, &dmar_domain_map_ops);		iommu_domain_init(unit, iodom, &dmar_domain_map_ops);

domain->dmar = dmar;		domain->dmar = dmar;

/*		/*
* For now, use the maximal usable physical address of the		* For now, use the maximal usable physical address of the
* installed memory to calculate the mgaw on id_mapped domain.		* installed memory to calculate the mgaw on id_mapped domain.
* It is useful for the identity mapping, and less so for the		* It is useful for the identity mapping, and less so for the
▲ Show 20 Lines • Show All 523 Lines • ▼ Show 20 Lines	dmar_domain_unload(struct dmar_domain *domain,
DMAR_LOCK(unit);		DMAR_LOCK(unit);
TAILQ_FOREACH(entry, entries, dmamap_link) {		TAILQ_FOREACH(entry, entries, dmamap_link) {
dmar_qi_invalidate_locked(domain, entry->start, entry->end -		dmar_qi_invalidate_locked(domain, entry->start, entry->end -
entry->start, &entry->gseq,		entry->start, &entry->gseq,
dmar_domain_unload_emit_wait(domain, entry));		dmar_domain_unload_emit_wait(domain, entry));
}		}
TAILQ_CONCAT(&unit->tlb_flush_entries, entries, dmamap_link);		TAILQ_CONCAT(&unit->tlb_flush_entries, entries, dmamap_link);
DMAR_UNLOCK(unit);		DMAR_UNLOCK(unit);
}

static void
dmar_domain_unload_task(void *arg, int pending)
{
struct dmar_domain *domain;
struct iommu_map_entries_tailq entries;

domain = arg;
TAILQ_INIT(&entries);

for (;;) {
DMAR_DOMAIN_LOCK(domain);
TAILQ_SWAP(&domain->iodom.unload_entries, &entries,
iommu_map_entry, dmamap_link);
DMAR_DOMAIN_UNLOCK(domain);
if (TAILQ_EMPTY(&entries))
break;
dmar_domain_unload(domain, &entries, true);
}
}		}

struct iommu_ctx *		struct iommu_ctx *
iommu_get_ctx(struct iommu_unit *iommu, device_t dev, uint16_t rid,		iommu_get_ctx(struct iommu_unit *iommu, device_t dev, uint16_t rid,
bool id_mapped, bool rmrr_init)		bool id_mapped, bool rmrr_init)
{		{
struct dmar_unit *dmar;		struct dmar_unit *dmar;
struct dmar_ctx *ret;		struct dmar_ctx *ret;
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