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Differential D25894 Diff 75235 head/sys/dev/iommu/iommu_gas.c

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head/sys/dev/iommu/iommu_gas.c

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#include <vm/uma.h> #include <vm/uma.h>
#include <dev/pci/pcireg.h> #include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h> #include <dev/pci/pcivar.h>
#include <dev/iommu/iommu.h> #include <dev/iommu/iommu.h>
#include <machine/atomic.h> #include <machine/atomic.h>
#include <machine/bus.h> #include <machine/bus.h>
#include <machine/md_var.h> #include <machine/md_var.h>
#if defined(__amd64__) || defined(__i386__) #if defined(__amd64__) || defined(__i386__)
#include <machine/specialreg.h>
#include <x86/include/busdma_impl.h>
#include <x86/iommu/intel_reg.h> #include <x86/iommu/intel_reg.h>
#include <x86/iommu/intel_dmar.h>
#endif #endif
#include <dev/iommu/busdma_iommu.h> #include <dev/iommu/busdma_iommu.h>
/* /*
* Guest Address Space management. * Guest Address Space management.
*/ */
static uma_zone_t iommu_map_entry_zone; static uma_zone_t iommu_map_entry_zone;
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#endif #endif
KASSERT(error == 0, KASSERT(error == 0,
("unexpected error %d from iommu_gas_find_entry", error)); ("unexpected error %d from iommu_gas_find_entry", error));
KASSERT(entry->end < domain->end, ("allocated GPA %jx, max GPA %jx", KASSERT(entry->end < domain->end, ("allocated GPA %jx, max GPA %jx",
(uintmax_t)entry->end, (uintmax_t)domain->end)); (uintmax_t)entry->end, (uintmax_t)domain->end));
entry->flags |= eflags; entry->flags |= eflags;
IOMMU_DOMAIN_UNLOCK(domain); IOMMU_DOMAIN_UNLOCK(domain);
error = domain_map_buf(domain, entry->start, entry->end - entry->start, error = domain->ops->map(domain, entry->start,
ma, eflags, entry->end - entry->start, ma, eflags,
((flags & IOMMU_MF_CANWAIT) != 0 ? IOMMU_PGF_WAITOK : 0)); ((flags & IOMMU_MF_CANWAIT) != 0 ? IOMMU_PGF_WAITOK : 0));
if (error == ENOMEM) { if (error == ENOMEM) {
iommu_domain_unload_entry(entry, true); iommu_domain_unload_entry(entry, true);
return (error); return (error);
} }
KASSERT(error == 0, KASSERT(error == 0,
("unexpected error %d from domain_map_buf", error)); ("unexpected error %d from domain_map_buf", error));
*res = entry; *res = entry;
Show All 19 Lines if (error != 0) {
IOMMU_DOMAIN_UNLOCK(domain); IOMMU_DOMAIN_UNLOCK(domain);
return (error); return (error);
} }
entry->flags |= eflags; entry->flags |= eflags;
IOMMU_DOMAIN_UNLOCK(domain); IOMMU_DOMAIN_UNLOCK(domain);
if (entry->end == entry->start) if (entry->end == entry->start)
return (0); return (0);
error = domain_map_buf(domain, entry->start, entry->end - entry->start, error = domain->ops->map(domain, entry->start,
ma + OFF_TO_IDX(start - entry->start), eflags, entry->end - entry->start, ma + OFF_TO_IDX(start - entry->start),
((flags & IOMMU_MF_CANWAIT) != 0 ? IOMMU_PGF_WAITOK : 0)); eflags, ((flags & IOMMU_MF_CANWAIT) != 0 ? IOMMU_PGF_WAITOK : 0));
if (error == ENOMEM) { if (error == ENOMEM) {
iommu_domain_unload_entry(entry, false); iommu_domain_unload_entry(entry, false);
return (error); return (error);
} }
KASSERT(error == 0, KASSERT(error == 0,
("unexpected error %d from domain_map_buf", error)); ("unexpected error %d from domain_map_buf", error));
return (0); return (0);
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