On 2017/5/22 23:06, Robin Murphy wrote:
IORT revision C has been published with a number of new SMMU
implementation identifiers. Since IORT doesn't have any way of falling
back to a more generic model code, we really need Linux to know about
these before vendors start updating their firmware tables to use them.
CC: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
CC: Robert Moore <robert.moore@xxxxxxxxx>
CC: Lv Zheng <lv.zheng@xxxxxxxxx>
Acked-by: Robert Richter <rrichter@xxxxxxxxxx>
Tested-by: Robert Richter <rrichter@xxxxxxxxxx>
Signed-off-by: Robin Murphy <robin.murphy@xxxxxxx>
---
v2: Update more comments, add Robert's tags.
I'm including this here as a kernel patch just for context - once I've
figured out how we actually submit patches to ACPICA directly, I'll do
that per the preferred process.
Robin.
include/acpi/actbl2.h | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index faa9f2c0d5de..f469ea41f2fd 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -663,7 +663,7 @@ struct acpi_ibft_target {
* IORT - IO Remapping Table
*
* Conforms to "IO Remapping Table System Software on ARM Platforms",
- * Document number: ARM DEN 0049B, October 2015
+ * Document number: ARM DEN 0049C, May 2017
*
******************************************************************************/
@@ -778,6 +778,8 @@ struct acpi_iort_smmu {
#define ACPI_IORT_SMMU_V2 0x00000001 /* Generic SMMUv2 */
#define ACPI_IORT_SMMU_CORELINK_MMU400 0x00000002 /* ARM Corelink MMU-400 */
#define ACPI_IORT_SMMU_CORELINK_MMU500 0x00000003 /* ARM Corelink MMU-500 */
+#define ACPI_IORT_SMMU_CORELINK_MMU401 0x00000004 /* ARM Corelink MMU-401 */
+#define ACPI_IORT_SMMU_CAVIUM_SMMUV2 0x00000005 /* Cavium ThunderX SMMUv2 */
/* Masks for Flags field above */
@@ -798,13 +800,19 @@ struct acpi_iort_smmu_v3 {
u32 flags;
u32 reserved;
u64 vatos_address;
- u32 model; /* O: generic SMMUv3 */
+ u32 model;
u32 event_gsiv;
u32 pri_gsiv;
u32 gerr_gsiv;
u32 sync_gsiv;
};
+/* Values for Model field above */
+
+#define ACPI_IORT_SMMU_V3 0x00000000 /* Generic SMMUv3 */
+#define ACPI_IORT_SMMU_HISILICON_HI161X 0x00000001 /* HiSilicon Hi161x SMMUv3 */
+#define ACPI_IORT_SMMU_CAVIUM_CN99XX 0x00000002 /* Cavium CN99xx SMMUv3 */
+
/* Masks for Flags field above */
#define ACPI_IORT_SMMU_V3_COHACC_OVERRIDE (1)
Looks good to me,
Reviewed-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
By the way, how will this patch be merged? There are pending patches
on top of it, Rafael suggested to work with ACPICA upstream first [1],
Robin, will work on that?
[1]:
https://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1394295.html
Thanks
Hanjun
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