drivers/serial/8250_hcdp.h

   1 /*
   2  * drivers/serial/8250_hcdp.h
   3  *
   4  * Copyright (C) 2002 Hewlett-Packard Co.
   5  *      Khalid Aziz <khalid_aziz@hp.com>
   6  *
   7  * Definitions for HCDP defined serial ports (Serial console and debug
   8  * ports)
   9  */
  10
  11 /* ACPI table signatures */
  12 #define HCDP_SIG_LEN            4
  13 #define HCDP_SIGNATURE          "HCDP"
  14
  15 /* Space ID as defined in ACPI generic address structure */
  16 #define ACPI_MEM_SPACE          0
  17 #define ACPI_IO_SPACE           1
  18 #define ACPI_PCICONF_SPACE      2
  19
  20 /*
  21  * Maximum number of HCDP devices we want to read in
  22  */
  23 #define MAX_HCDP_DEVICES        6
  24
  25 /*
  26  * Default UART clock rate if clock rate is 0 in HCDP table.
  27  */
  28 #define DEFAULT_UARTCLK         115200
  29
  30 /*
  31  * ACPI Generic Address Structure
  32  */
  33 typedef struct {
  34         u8  space_id;
  35         u8  bit_width;
  36         u8  bit_offset;
  37         u8  resv;
  38         u32 addrlo;
  39         u32 addrhi;
  40 } acpi_gen_addr;
  41
  42 /* HCDP Device descriptor entry types */
  43 #define HCDP_DEV_CONSOLE        0
  44 #define HCDP_DEV_DEBUG          1
  45
  46 /* HCDP Device descriptor type */
  47 typedef struct {
  48         u8      type;
  49         u8      bits;
  50         u8      parity;
  51         u8      stop_bits;
  52         u8      pci_seg;
  53         u8      pci_bus;
  54         u8      pci_dev;
  55         u8      pci_func;
  56         u64     baud;
  57         acpi_gen_addr   base_addr;
  58         u16     pci_dev_id;
  59         u16     pci_vendor_id;
  60         u32     global_int;
  61         u32     clock_rate;
  62         u8      pci_prog_intfc;
  63         u8      resv;
  64 } hcdp_dev_t;
  65
  66 /* HCDP Table format */
  67 typedef struct {
  68         u8      signature[4];
  69         u32     len;
  70         u8      rev;
  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_entries;
  78         hcdp_dev_t      hcdp_dev[MAX_HCDP_DEVICES];
  79 } hcdp_t;