summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorMark McLoughlin <markmc@redhat.com>2008-11-20 18:49:45 +0300
committerJoerg Roedel <joerg.roedel@amd.com>2009-01-03 13:57:35 +0300
commit7a8fc25e0cc6e75fa6fdb0a856490e324218550b (patch)
treedca6863ae93cc141a20599e8943c9f74e3bd7384 /drivers
parent46b08e1a76b758193b0e7b889c6486a16eb1e9e2 (diff)
downloadlinux-7a8fc25e0cc6e75fa6fdb0a856490e324218550b.tar.xz
intel-iommu: move context entry defs out from dma_remapping.h
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/intel-iommu.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 29bf2d8176e2..9d06f4bb6b5e 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -90,6 +90,44 @@ get_context_addr_from_root(struct root_entry *root)
NULL);
}
+/*
+ * low 64 bits:
+ * 0: present
+ * 1: fault processing disable
+ * 2-3: translation type
+ * 12-63: address space root
+ * high 64 bits:
+ * 0-2: address width
+ * 3-6: aval
+ * 8-23: domain id
+ */
+struct context_entry {
+ u64 lo;
+ u64 hi;
+};
+#define context_present(c) ((c).lo & 1)
+#define context_fault_disable(c) (((c).lo >> 1) & 1)
+#define context_translation_type(c) (((c).lo >> 2) & 3)
+#define context_address_root(c) ((c).lo & VTD_PAGE_MASK)
+#define context_address_width(c) ((c).hi & 7)
+#define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
+
+#define context_set_present(c) do {(c).lo |= 1;} while (0)
+#define context_set_fault_enable(c) \
+ do {(c).lo &= (((u64)-1) << 2) | 1;} while (0)
+#define context_set_translation_type(c, val) \
+ do { \
+ (c).lo &= (((u64)-1) << 4) | 3; \
+ (c).lo |= ((val) & 3) << 2; \
+ } while (0)
+#define CONTEXT_TT_MULTI_LEVEL 0
+#define context_set_address_root(c, val) \
+ do {(c).lo |= (val) & VTD_PAGE_MASK; } while (0)
+#define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
+#define context_set_domain_id(c, val) \
+ do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
+#define context_clear_entry(c) do {(c).lo = 0; (c).hi = 0;} while (0)
+
static void flush_unmaps_timeout(unsigned long data);
DEFINE_TIMER(unmap_timer, flush_unmaps_timeout, 0, 0);