1/*
2 * Definitions for PCDP-defined console devices
3 *
4 * v1.0a: http://www.dig64.org/specifications/DIG64_HCDPv10a_01.pdf
5 * v2.0:  http://www.dig64.org/specifications/DIG64_PCDPv20.pdf
6 *
7 * (c) Copyright 2002, 2004 Hewlett-Packard Development Company, L.P.
8 *	Khalid Aziz <khalid.aziz@hp.com>
9 *	Bjorn Helgaas <bjorn.helgaas@hp.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16#define PCDP_CONSOLE			0
17#define PCDP_DEBUG			1
18#define PCDP_CONSOLE_OUTPUT		2
19#define PCDP_CONSOLE_INPUT		3
20
21#define PCDP_UART			(0 << 3)
22#define PCDP_VGA			(1 << 3)
23#define PCDP_USB			(2 << 3)
24
25/* pcdp_uart.type and pcdp_device.type */
26#define PCDP_CONSOLE_UART		(PCDP_UART | PCDP_CONSOLE)
27#define PCDP_DEBUG_UART			(PCDP_UART | PCDP_DEBUG)
28#define PCDP_CONSOLE_VGA		(PCDP_VGA  | PCDP_CONSOLE_OUTPUT)
29#define PCDP_CONSOLE_USB		(PCDP_USB  | PCDP_CONSOLE_INPUT)
30
31/* pcdp_uart.flags */
32#define PCDP_UART_EDGE_SENSITIVE	(1 << 0)
33#define PCDP_UART_ACTIVE_LOW		(1 << 1)
34#define PCDP_UART_PRIMARY_CONSOLE	(1 << 2)
35#define PCDP_UART_IRQ			(1 << 6) /* in pci_func for rev < 3 */
36#define PCDP_UART_PCI			(1 << 7) /* in pci_func for rev < 3 */
37
38struct pcdp_uart {
39	u8				type;
40	u8				bits;
41	u8				parity;
42	u8				stop_bits;
43	u8				pci_seg;
44	u8				pci_bus;
45	u8				pci_dev;
46	u8				pci_func;
47	u64				baud;
48	struct acpi_generic_address	addr;
49	u16				pci_dev_id;
50	u16				pci_vendor_id;
51	u32				gsi;
52	u32				clock_rate;
53	u8				pci_prog_intfc;
54	u8				flags;
55	u16				conout_index;
56	u32				reserved;
57} __attribute__((packed));
58
59#define PCDP_IF_PCI	1
60
61/* pcdp_if_pci.trans */
62#define PCDP_PCI_TRANS_IOPORT	0x02
63#define PCDP_PCI_TRANS_MMIO	0x01
64
65struct pcdp_if_pci {
66	u8			interconnect;
67	u8			reserved;
68	u16			length;
69	u8			segment;
70	u8			bus;
71	u8			dev;
72	u8			fun;
73	u16			dev_id;
74	u16			vendor_id;
75	u32			acpi_interrupt;
76	u64			mmio_tra;
77	u64			ioport_tra;
78	u8			flags;
79	u8			trans;
80} __attribute__((packed));
81
82struct pcdp_vga {
83	u8			count;		/* address space descriptors */
84} __attribute__((packed));
85
86/* pcdp_device.flags */
87#define PCDP_PRIMARY_CONSOLE	1
88
89struct pcdp_device {
90	u8			type;
91	u8			flags;
92	u16			length;
93	u16			efi_index;
94	/* next data is pcdp_if_pci or pcdp_if_acpi (not yet supported) */
95	/* next data is device specific type (currently only pcdp_vga) */
96} __attribute__((packed));
97
98struct pcdp {
99	u8			signature[4];
100	u32			length;
101	u8			rev;		/* PCDP v2.0 is rev 3 */
102	u8			chksum;
103	u8			oemid[6];
104	u8			oem_tabid[8];
105	u32			oem_rev;
106	u8			creator_id[4];
107	u32			creator_rev;
108	u32			num_uarts;
109	struct pcdp_uart	uart[0];	/* actual size is num_uarts */
110	/* remainder of table is pcdp_device structures */
111} __attribute__((packed));
112