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ACPICA: Add CXL 3.0 structures (CXIMS & RDPAS) to the CEDT table 

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@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Alison Schofield 2022-10-27 19:56:50 +02:00 committed by Rafael J. Wysocki
parent 183f0a09d3
commit f350c68e3c
1 changed files with 34 additions and 1 deletions
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35
include/acpi/actbl1.h
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@ -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)