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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-20 16:24:21 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-05-28 17:53:30 +0200 |
| commit | 02acc43a294098c2a4cd22cf24e9c988644f9f7f (patch) | |
| tree | b87fd425ff56d1378eccb9a10ba4efc6e097ed37 /arch/x86/kernel/amd_iommu_init.c | |
| parent | 42a698f40a0946f5517308411b9e003ae031414d (diff) | |
| download | linux-02acc43a294098c2a4cd22cf24e9c988644f9f7f.tar.gz linux-02acc43a294098c2a4cd22cf24e9c988644f9f7f.tar.bz2 linux-02acc43a294098c2a4cd22cf24e9c988644f9f7f.zip | |
amd-iommu: print ivmd information to dmesg when requested
Add information about device memory mapping requirements for the IOMMU
as described in the IVRS ACPI table to the kernel log if amd_iommu_dump
was specified on the kernel command line.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel/amd_iommu_init.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index fe3e6453cbf7..b90a78cfdcb8 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -983,6 +983,7 @@ static int __init init_exclusion_range(struct ivmd_header *m) static int __init init_unity_map_range(struct ivmd_header *m) { struct unity_map_entry *e = 0; + char *s; e = kzalloc(sizeof(*e), GFP_KERNEL); if (e == NULL) @@ -991,13 +992,16 @@ static int __init init_unity_map_range(struct ivmd_header *m) switch (m->type) { default: case ACPI_IVMD_TYPE: + s = "IVMD_TYPEi\t\t\t"; e->devid_start = e->devid_end = m->devid; break; case ACPI_IVMD_TYPE_ALL: + s = "IVMD_TYPE_ALL\t\t"; e->devid_start = 0; e->devid_end = amd_iommu_last_bdf; break; case ACPI_IVMD_TYPE_RANGE: + s = "IVMD_TYPE_RANGE\t\t"; e->devid_start = m->devid; e->devid_end = m->aux; break; @@ -1006,6 +1010,13 @@ static int __init init_unity_map_range(struct ivmd_header *m) e->address_end = e->address_start + PAGE_ALIGN(m->range_length); e->prot = m->flags >> 1; + DUMP_printk("%s devid_start: %02x:%02x.%x devid_end: %02x:%02x.%x" + " range_start: %016llx range_end: %016llx flags: %x\n", s, + PCI_BUS(e->devid_start), PCI_SLOT(e->devid_start), + PCI_FUNC(e->devid_start), PCI_BUS(e->devid_end), + PCI_SLOT(e->devid_end), PCI_FUNC(e->devid_end), + e->address_start, e->address_end, m->flags); + list_add_tail(&e->list, &amd_iommu_unity_map); return 0; |