From: Alison Schofield <alison.schofield@xxxxxxxxx>
ACPICA commit 2d8dc0383d3c908389053afbdc329bbd52f009ce
The CXL 3.0 Specification [1] adds two new structures to
the CXL Early Discovery Table (CEDT). The CEDT may include
zero or more entries of these types:
CXIMS: CXL XOR Interleave Math Structure
Enables the host to find a targets position in an
Interleave Target List when XOR Math is used.
RDPAS: RCEC Downstream Post Association Structure
Enables the host to locate the Downstream Port(s)
that report errors to a given Root Complex Event
Collector (RCEC).
Link: https://www.computeexpresslink.org/spec-landing # [1]
Link: https://github.com/acpica/acpica/commit/2d8dc038
Signed-off-by: Alison Schofield <alison.schofield@xxxxxxxxx>
Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
include/acpi/actbl1.h | 35 ++++++++++++++++++++++++++++++++++-
1 file changed, 34 insertions(+), 1 deletion(-)
Index: linux-pm/include/acpi/actbl1.h
===================================================================
--- linux-pm.orig/include/acpi/actbl1.h
+++ linux-pm/include/acpi/actbl1.h
@@ -329,7 +329,9 @@ 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_RDPAS = 3,
+ ACPI_CEDT_TYPE_RESERVED = 4,
};
/* Values for version field above */
@@ -380,6 +382,7 @@ 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 +392,36 @@ 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[];
+};
+
+/* 3: CXL RCEC Downstream Port Association Structure */
+
+struct acpi_cedt_rdpas {
+ struct acpi_cedt_header header;
+ u8 reserved1;
+ u16 length;
+ u16 segment;
+ u16 bdf;
+ u8 protocol;
+ u64 address;
+};
+
+/* Masks for bdf field above */
+#define ACPI_CEDT_RDPAS_BUS_MASK 0xff00
+#define ACPI_CEDT_RDPAS_DEVICE_MASK 0x00f8
+#define ACPI_CEDT_RDPAS_FUNCTION_MASK 0x0007
+
+#define ACPI_CEDT_RDPAS_PROTOCOL_IO (0)
+#define ACPI_CEDT_RDPAS_PROTOCOL_CACHEMEM (1)
+
/*******************************************************************************
*
* CPEP - Corrected Platform Error Polling table (ACPI 4.0)
