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[v3,1/3] For ACPICA: Add the CXIMS structure definition to the CEDT table

Message ID 2252a180fca53c2cc1bf46efb451eff91587eac7.1663291370.git.alison.schofield@intel.com
State Superseded
Delegated to: Dan Williams
Headers show
Series CXL XOR Interleave Arithmetic | expand

Commit Message

Alison Schofield Sept. 16, 2022, 1:30 a.m. UTC 
From: Alison Schofield <alison.schofield@intel.com>

A linux-ized ACPI patch is included here for reference. The ACPI
pull request has been merged and we expect the upstream version
shortly. https://github.com/acpica/acpica/pull/787

The CXL XOR Interleave Math Structure (CXIMS) is added to the
CXL Early Discovery Table (CEDT). This new structure is defined
in the CXL 3.0 specification Section 9.17.1.4

https://www.computeexpresslink.org/spec-landing

Signed-off-by: Alison Schofield <alison.schofield@intel.com>
---
 include/acpi/actbl1.h | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)
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Patch

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 15c78678c5d3..f96f4fe5328d 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -329,7 +329,8 @@  struct acpi_cedt_header {
 enum acpi_cedt_type {
 	ACPI_CEDT_TYPE_CHBS = 0,
 	ACPI_CEDT_TYPE_CFMWS = 1,
-	ACPI_CEDT_TYPE_RESERVED = 2,
+	ACPI_CEDT_TYPE_CXIMS = 2,
+	ACPI_CEDT_TYPE_RESERVED = 3,
 };
 
 /* Values for version field above */
@@ -380,6 +381,7 @@  struct acpi_cedt_cfmws_target_element {
 /* Values for Interleave Arithmetic field above */
 
 #define ACPI_CEDT_CFMWS_ARITHMETIC_MODULO   (0)
+#define ACPI_CEDT_CFMWS_ARITHMETIC_XOR	    (1)
 
 /* Values for Restrictions field above */
 
@@ -389,6 +391,16 @@  struct acpi_cedt_cfmws_target_element {
 #define ACPI_CEDT_CFMWS_RESTRICT_PMEM       (1<<3)
 #define ACPI_CEDT_CFMWS_RESTRICT_FIXED      (1<<4)
 
+/* 2: CXL XOR Interleave Math Structure */
+
+struct acpi_cedt_cxims {
+	struct acpi_cedt_header header;
+	u16 reserved1;
+	u8 hbig;
+	u8 nr_xormaps;
+	u64 xormap_list[];
+};
+
 /*******************************************************************************
  *
  * CPEP - Corrected Platform Error Polling table (ACPI 4.0)