diff options
| author | Simon Glass <sjg@chromium.org> | 2020-04-08 16:57:39 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-04-16 14:36:28 +0800 |
| commit | bfeb5d460cd129e037c87e9d90b02808d68c0147 (patch) | |
| tree | 879f1cdfc787a1eb66bb8f5a54b6dbdc0c5497b3 /include/acpi | |
| parent | 91fe8b79f6912ab7622169bc1673e2df222e0b57 (diff) | |
acpi: Add support for DMAR
The DMA Remapping Reporting (DMAR) table contains information about DMA
remapping.
Add a version simple version of this table with only the minimum fields
filled out. i.e. no entries.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_table.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h index fdd7682c89..194be9aa58 100644 --- a/include/acpi/acpi_table.h +++ b/include/acpi/acpi_table.h @@ -360,6 +360,51 @@ struct acpi_csrt_shared_info { u32 max_block_size; }; +enum dmar_type { + DMAR_DRHD = 0, + DMAR_RMRR = 1, + DMAR_ATSR = 2, + DMAR_RHSA = 3, + DMAR_ANDD = 4 +}; + +enum { + DRHD_INCLUDE_PCI_ALL = BIT(0) +}; + +enum dmar_flags { + DMAR_INTR_REMAP = BIT(0), + DMAR_X2APIC_OPT_OUT = BIT(1), + DMAR_CTRL_PLATFORM_OPT_IN_FLAG = BIT(2), +}; + +struct dmar_entry { + u16 type; + u16 length; + u8 flags; + u8 reserved; + u16 segment; + u64 bar; +}; + +struct dmar_rmrr_entry { + u16 type; + u16 length; + u16 reserved; + u16 segment; + u64 bar; + u64 limit; +}; + +/* DMAR (DMA Remapping Reporting Structure) */ +struct __packed acpi_dmar { + struct acpi_table_header header; + u8 host_address_width; + u8 flags; + u8 reserved[10]; + struct dmar_entry structure[0]; +}; + /* DBG2 definitions are partially used for SPCR interface_type */ /* Types for port_type field */ @@ -451,6 +496,15 @@ enum acpi_tables { */ int acpi_get_table_revision(enum acpi_tables table); +/** + * acpi_create_dmar() - Create a DMA Remapping Reporting (DMAR) table + * + * @dmar: Place to put the table + * @flags: DMAR flags to use + * @return 0 if OK, -ve on error + */ +int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags); + #endif /* !__ACPI__*/ #include <asm/acpi_table.h> |