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iommu_gas: add ddb 'show iommu_domain' command

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(cherry picked from commit 30ce85ca11433ba05cdbab8aedceaa15a93bd97a)
This commit is contained in:
Konstantin Belousov 2023-12-24 16:52:00 +02:00
parent eb0d8cb121
commit 1bb758df1a
1 changed files with 45 additions and 0 deletions
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45
sys/dev/iommu/iommu_gas.c
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@ -1031,3 +1031,48 @@ SYSCTL_INT(_hw_iommu, OID_AUTO, check_free, CTLFLAG_RWTUN,
&iommu_check_free, 0,
"Check the GPA RBtree for free_down and free_after validity");
#endif
#include "opt_ddb.h"
#ifdef DDB
#include <ddb/ddb.h>
static void
iommu_debug_dump_gas(struct iommu_domain *domain)
{
struct iommu_map_entry *entry;
db_printf("iommu_domain %p tree %p iommu %p fl %#x\n", domain,
&domain->rb_root, domain->iommu, domain->flags);
db_printf("iommu_domain %p tree %p\n", domain, &domain->rb_root);
RB_FOREACH(entry, iommu_gas_entries_tree, &domain->rb_root) {
db_printf(
" e %p [%#jx %#jx] fl %#x first %#jx last %#jx free_down %#jx",
entry, (uintmax_t)entry->start, (uintmax_t)entry->end,
entry->flags,
(uintmax_t)entry->first, (uintmax_t)entry->last,
(uintmax_t)entry->free_down);
if (entry == domain->start_gap)
db_printf(" start_gap");
if (entry == domain->first_place)
db_printf(" first_place");
if (entry == domain->last_place)
db_printf(" last_place");
db_printf("\n");
}
}
DB_SHOW_COMMAND(iommu_domain, iommu_domain_show)
{
struct iommu_domain *domain;
if (!have_addr) {
db_printf("show iommu_domain addr\n");
return;
}
domain = (void *)addr;
iommu_debug_dump_gas(domain);
}
#endif