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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/drivers/firmware/pcdp.h
15109 views
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/*

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 * Definitions for PCDP-defined console devices

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 *

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 * For DIG64_HCDPv10a_01.pdf and DIG64_PCDPv20.pdf (v1.0a and v2.0 resp.),

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 * please see <http://www.dig64.org/specifications/>

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 *

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 * (c) Copyright 2002, 2004 Hewlett-Packard Development Company, L.P.

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 *	Khalid Aziz <[email protected]>

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 *	Bjorn Helgaas <[email protected]>

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 *

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 * This program is free software; you can redistribute it and/or modify

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 * it under the terms of the GNU General Public License version 2 as

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 * published by the Free Software Foundation.

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 */

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#define PCDP_CONSOLE			0

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#define PCDP_DEBUG			1

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#define PCDP_CONSOLE_OUTPUT		2

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#define PCDP_CONSOLE_INPUT		3

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#define PCDP_UART			(0 << 3)

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#define PCDP_VGA			(1 << 3)

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#define PCDP_USB			(2 << 3)

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/* pcdp_uart.type and pcdp_device.type */

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#define PCDP_CONSOLE_UART		(PCDP_UART | PCDP_CONSOLE)

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#define PCDP_DEBUG_UART			(PCDP_UART | PCDP_DEBUG)

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#define PCDP_CONSOLE_VGA		(PCDP_VGA  | PCDP_CONSOLE_OUTPUT)

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#define PCDP_CONSOLE_USB		(PCDP_USB  | PCDP_CONSOLE_INPUT)

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/* pcdp_uart.flags */

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#define PCDP_UART_EDGE_SENSITIVE	(1 << 0)

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#define PCDP_UART_ACTIVE_LOW		(1 << 1)

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#define PCDP_UART_PRIMARY_CONSOLE	(1 << 2)

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#define PCDP_UART_IRQ			(1 << 6) /* in pci_func for rev < 3 */

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#define PCDP_UART_PCI			(1 << 7) /* in pci_func for rev < 3 */

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struct pcdp_uart {

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	u8				type;

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	u8				bits;

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	u8				parity;

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	u8				stop_bits;

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	u8				pci_seg;

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	u8				pci_bus;

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	u8				pci_dev;

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	u8				pci_func;

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	u64				baud;

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	struct acpi_generic_address	addr;

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	u16				pci_dev_id;

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	u16				pci_vendor_id;

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	u32				gsi;

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	u32				clock_rate;

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	u8				pci_prog_intfc;

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	u8				flags;

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	u16				conout_index;

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	u32				reserved;

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} __attribute__((packed));

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#define PCDP_IF_PCI	1

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/* pcdp_if_pci.trans */

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#define PCDP_PCI_TRANS_IOPORT	0x02

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#define PCDP_PCI_TRANS_MMIO	0x01

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struct pcdp_if_pci {

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	u8			interconnect;

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	u8			reserved;

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	u16			length;

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	u8			segment;

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	u8			bus;

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	u8			dev;

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	u8			fun;

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	u16			dev_id;

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	u16			vendor_id;

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	u32			acpi_interrupt;

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	u64			mmio_tra;

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	u64			ioport_tra;

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	u8			flags;

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	u8			trans;

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} __attribute__((packed));

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struct pcdp_vga {

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	u8			count;		/* address space descriptors */

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} __attribute__((packed));

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/* pcdp_device.flags */

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#define PCDP_PRIMARY_CONSOLE	1

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struct pcdp_device {

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	u8			type;

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	u8			flags;

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	u16			length;

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	u16			efi_index;

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	/* next data is pcdp_if_pci or pcdp_if_acpi (not yet supported) */

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	/* next data is device specific type (currently only pcdp_vga) */

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} __attribute__((packed));

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struct pcdp {

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	u8			signature[4];

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	u32			length;

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	u8			rev;		/* PCDP v2.0 is rev 3 */

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	u8			chksum;

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	u8			oemid[6];

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	u8			oem_tabid[8];

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	u32			oem_rev;

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	u8			creator_id[4];

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	u32			creator_rev;

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	u32			num_uarts;

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	struct pcdp_uart	uart[0];	/* actual size is num_uarts */

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	/* remainder of table is pcdp_device structures */

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} __attribute__((packed));

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