1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Definitions for PCDP-defined console devices 4 * 5 * For DIG64_HCDPv10a_01.pdf and DIG64_PCDPv20.pdf (v1.0a and v2.0 resp.), 6 * please see <http://www.dig64.org/specifications/> 7 * 8 * (c) Copyright 2002, 2004 Hewlett-Packard Development Company, L.P. 9 * Khalid Aziz <khalid.aziz@hp.com> 10 * Bjorn Helgaas <bjorn.helgaas@hp.com> 11 */ 12 13 #define PCDP_CONSOLE 0 14 #define PCDP_DEBUG 1 15 #define PCDP_CONSOLE_OUTPUT 2 16 #define PCDP_CONSOLE_INPUT 3 17 18 #define PCDP_UART (0 << 3) 19 #define PCDP_VGA (1 << 3) 20 #define PCDP_USB (2 << 3) 21 22 /* pcdp_uart.type and pcdp_device.type */ 23 #define PCDP_CONSOLE_UART (PCDP_UART | PCDP_CONSOLE) 24 #define PCDP_DEBUG_UART (PCDP_UART | PCDP_DEBUG) 25 #define PCDP_CONSOLE_VGA (PCDP_VGA | PCDP_CONSOLE_OUTPUT) 26 #define PCDP_CONSOLE_USB (PCDP_USB | PCDP_CONSOLE_INPUT) 27 28 /* pcdp_uart.flags */ 29 #define PCDP_UART_EDGE_SENSITIVE (1 << 0) 30 #define PCDP_UART_ACTIVE_LOW (1 << 1) 31 #define PCDP_UART_PRIMARY_CONSOLE (1 << 2) 32 #define PCDP_UART_IRQ (1 << 6) /* in pci_func for rev < 3 */ 33 #define PCDP_UART_PCI (1 << 7) /* in pci_func for rev < 3 */ 34 35 struct pcdp_uart { 36 u8 type; 37 u8 bits; 38 u8 parity; 39 u8 stop_bits; 40 u8 pci_seg; 41 u8 pci_bus; 42 u8 pci_dev; 43 u8 pci_func; 44 u64 baud; 45 struct acpi_generic_address addr; 46 u16 pci_dev_id; 47 u16 pci_vendor_id; 48 u32 gsi; 49 u32 clock_rate; 50 u8 pci_prog_intfc; 51 u8 flags; 52 u16 conout_index; 53 u32 reserved; 54 } __attribute__((packed)); 55 56 #define PCDP_IF_PCI 1 57 58 /* pcdp_if_pci.trans */ 59 #define PCDP_PCI_TRANS_IOPORT 0x02 60 #define PCDP_PCI_TRANS_MMIO 0x01 61 62 struct pcdp_if_pci { 63 u8 interconnect; 64 u8 reserved; 65 u16 length; 66 u8 segment; 67 u8 bus; 68 u8 dev; 69 u8 fun; 70 u16 dev_id; 71 u16 vendor_id; 72 u32 acpi_interrupt; 73 u64 mmio_tra; 74 u64 ioport_tra; 75 u8 flags; 76 u8 trans; 77 } __attribute__((packed)); 78 79 struct pcdp_vga { 80 u8 count; /* address space descriptors */ 81 } __attribute__((packed)); 82 83 /* pcdp_device.flags */ 84 #define PCDP_PRIMARY_CONSOLE 1 85 86 struct pcdp_device { 87 u8 type; 88 u8 flags; 89 u16 length; 90 u16 efi_index; 91 /* next data is pcdp_if_pci or pcdp_if_acpi (not yet supported) */ 92 /* next data is device specific type (currently only pcdp_vga) */ 93 } __attribute__((packed)); 94 95 struct pcdp { 96 u8 signature[4]; 97 u32 length; 98 u8 rev; /* PCDP v2.0 is rev 3 */ 99 u8 chksum; 100 u8 oemid[6]; 101 u8 oem_tabid[8]; 102 u32 oem_rev; 103 u8 creator_id[4]; 104 u32 creator_rev; 105 u32 num_uarts; 106 struct pcdp_uart uart[0]; /* actual size is num_uarts */ 107 /* remainder of table is pcdp_device structures */ 108 } __attribute__((packed)); 109