Add SPCR table description as it provided in Linux kernel.
Port subtype for ACPI_DBG2_SERIAL_PORT is used as an interface type in SPCR.
Thus, provide a set of definitions to be utilized later.
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Reviewed-by: Bin Meng <bmeng...@gmail.com>
---
arch/x86/include/asm/acpi_table.h | 49 +++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/arch/x86/include/asm/acpi_table.h
b/arch/x86/include/asm/acpi_table.h
index 95fae036f6..51cc806673 100644
--- a/arch/x86/include/asm/acpi_table.h
+++ b/arch/x86/include/asm/acpi_table.h
@@ -303,6 +303,55 @@ struct acpi_mcfg_mmconfig {
/* ACPI global NVS structure */
struct acpi_global_nvs;
+/* DBG2 definitions are partially used for SPCR interface_type */
+
+/* Types for port_type field */
+
+#define ACPI_DBG2_SERIAL_PORT 0x8000
+#define ACPI_DBG2_1394_PORT 0x8001
+#define ACPI_DBG2_USB_PORT 0x8002
+#define ACPI_DBG2_NET_PORT 0x8003
+
+/* Subtypes for port_subtype field */
+
+#define ACPI_DBG2_16550_COMPATIBLE 0x0000
+#define ACPI_DBG2_16550_SUBSET 0x0001
+#define ACPI_DBG2_ARM_PL011 0x0003
+#define ACPI_DBG2_ARM_SBSA_32BIT 0x000D
+#define ACPI_DBG2_ARM_SBSA_GENERIC 0x000E
+#define ACPI_DBG2_ARM_DCC 0x000F
+#define ACPI_DBG2_BCM2835 0x0010
+
+#define ACPI_DBG2_1394_STANDARD 0x0000
+
+#define ACPI_DBG2_USB_XHCI 0x0000
+#define ACPI_DBG2_USB_EHCI 0x0001
+
+/* SPCR (Serial Port Console Redirection table) */
+struct __packed acpi_spcr {
+ struct acpi_table_header header;
+ u8 interface_type;
+ u8 reserved[3];
+ struct acpi_gen_regaddr serial_port;
+ u8 interrupt_type;
+ u8 pc_interrupt;
+ u32 interrupt; /* Global system interrupt */
+ u8 baud_rate;
+ u8 parity;
+ u8 stop_bits;
+ u8 flow_control;
+ u8 terminal_type;
+ u8 reserved1;
+ u16 pci_device_id; /* Must be 0xffff if not PCI device */
+ u16 pci_vendor_id; /* Must be 0xffff if not PCI device */
+ u8 pci_bus;
+ u8 pci_device;
+ u8 pci_function;
+ u32 pci_flags;
+ u8 pci_segment;
+ u32 reserved2;
+};
+
/* These can be used by the target port */
void acpi_fill_header(struct acpi_table_header *header, char *signature);
--
2.19.1
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