drivers/firmware/pcdp.h

   1 /*
   2  * Copyright (C) 2002, 2004 Hewlett-Packard Co.
   3  *      Khalid Aziz <khalid_aziz@hp.com>
   4  *      Bjorn Helgaas <bjorn.helgaas@hp.com>
   5  *
   6  * Definitions for PCDP-defined console devices
   7  *
   8  * v1.0a: http://www.dig64.org/specifications/DIG64_HCDPv10a_01.pdf
   9  * v2.0:  http://www.dig64.org/specifications/DIG64_HCDPv20_042804.pdf
  10  */
  11
  12 #define PCDP_CONSOLE                    0
  13 #define PCDP_DEBUG                      1
  14 #define PCDP_CONSOLE_OUTPUT             2
  15 #define PCDP_CONSOLE_INPUT              3
  16
  17 #define PCDP_UART                       (0 << 3)
  18 #define PCDP_VGA                        (1 << 3)
  19 #define PCDP_USB                        (2 << 3)
  20
  21 /* pcdp_uart.type and pcdp_device.type */
  22 #define PCDP_CONSOLE_UART               (PCDP_UART | PCDP_CONSOLE)
  23 #define PCDP_DEBUG_UART                 (PCDP_UART | PCDP_DEBUG)
  24 #define PCDP_CONSOLE_VGA                (PCDP_VGA  | PCDP_CONSOLE_OUTPUT)
  25 #define PCDP_CONSOLE_USB                (PCDP_USB  | PCDP_CONSOLE_INPUT)
  26
  27 /* pcdp_uart.flags */
  28 #define PCDP_UART_EDGE_SENSITIVE        (1 << 0)
  29 #define PCDP_UART_ACTIVE_LOW            (1 << 1)
  30 #define PCDP_UART_PRIMARY_CONSOLE       (1 << 2)
  31 #define PCDP_UART_IRQ                   (1 << 6) /* in pci_func for rev < 3 */
  32 #define PCDP_UART_PCI                   (1 << 7) /* in pci_func for rev < 3 */
  33
  34 struct pcdp_uart {
  35         u8                              type;
  36         u8                              bits;
  37         u8                              parity;
  38         u8                              stop_bits;
  39         u8                              pci_seg;
  40         u8                              pci_bus;
  41         u8                              pci_dev;
  42         u8                              pci_func;
  43         u64                             baud;
  44         struct acpi_generic_address     addr;
  45         u16                             pci_dev_id;
  46         u16                             pci_vendor_id;
  47         u32                             gsi;
  48         u32                             clock_rate;
  49         u8                              pci_prog_intfc;
  50         u8                              flags;
  51 };
  52
  53 struct pcdp_vga {
  54         u8                      count;          /* address space descriptors */
  55 };
  56
  57 /* pcdp_device.flags */
  58 #define PCDP_PRIMARY_CONSOLE    1
  59
  60 struct pcdp_device {
  61         u8                      type;
  62         u8                      flags;
  63         u16                     length;
  64         u16                     efi_index;
  65 };
  66
  67 struct pcdp {
  68         u8                      signature[4];
  69         u32                     length;
  70         u8                      rev;            /* PCDP v2.0 is rev 3 */
  71         u8                      chksum;
  72         u8                      oemid[6];
  73         u8                      oem_tabid[8];
  74         u32                     oem_rev;
  75         u8                      creator_id[4];
  76         u32                     creator_rev;
  77         u32                     num_uarts;
  78         struct pcdp_uart        uart[0];        /* actual size is num_uarts */
  79         /* remainder of table is pcdp_device structures */
  80 };