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| author | James Morse <james.morse@arm.com> | 2025-11-19 15:22:39 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2025-11-19 21:34:20 +0300 |
| commit | 115c5325beae7199219ab7c12ec2a2af8dea6c3c (patch) | |
| tree | 484c118d7ef7acdf7566f0b72fd359562de5f5a9 /drivers/acpi/tables.c | |
| parent | 96f4a4d53e6660d9b62e8d739388267fbb660e9f (diff) | |
| download | linux-115c5325beae7199219ab7c12ec2a2af8dea6c3c.tar.xz | |
ACPI / MPAM: Parse the MPAM table
Add code to parse the arm64 specific MPAM table, looking up the cache
level from the PPTT and feeding the end result into the MPAM driver.
This happens in two stages. Platform devices are created first for the
MSC devices. Once the driver probes it calls acpi_mpam_parse_resources()
to discover the RIS entries the MSC contains.
For now the MPAM hook mpam_ris_create() is stubbed out, but will update
the MPAM driver with optional discovered data about the RIS entries.
CC: Carl Worth <carl@os.amperecomputing.com>
Link: https://developer.arm.com/documentation/den0065/3-0bet/?lang=en
Reviewed-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Fenghua Yu <fenghuay@nvidia.com>
Tested-by: Fenghua Yu <fenghuay@nvidia.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Carl Worth <carl@os.amperecomputing.com>
Tested-by: Gavin Shan <gshan@redhat.com>
Tested-by: Zeng Heng <zengheng4@huawei.com>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/acpi/tables.c')
| -rw-r--r-- | drivers/acpi/tables.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 57fc8bc56166..4286e4af1092 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -408,7 +408,7 @@ static const char table_sigs[][ACPI_NAMESEG_SIZE] __nonstring_array __initconst ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT, ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT, ACPI_SIG_AGDI, - ACPI_SIG_NBFT, ACPI_SIG_SWFT}; + ACPI_SIG_NBFT, ACPI_SIG_SWFT, ACPI_SIG_MPAM}; #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header) |