pcdp.h 2.5 KB

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  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. #define PCDP_CONSOLE 0
  13. #define PCDP_DEBUG 1
  14. #define PCDP_CONSOLE_OUTPUT 2
  15. #define PCDP_CONSOLE_INPUT 3
  16. #define PCDP_UART (0 << 3)
  17. #define PCDP_VGA (1 << 3)
  18. #define PCDP_USB (2 << 3)
  19. /* pcdp_uart.type and pcdp_device.type */
  20. #define PCDP_CONSOLE_UART (PCDP_UART | PCDP_CONSOLE)
  21. #define PCDP_DEBUG_UART (PCDP_UART | PCDP_DEBUG)
  22. #define PCDP_CONSOLE_VGA (PCDP_VGA | PCDP_CONSOLE_OUTPUT)
  23. #define PCDP_CONSOLE_USB (PCDP_USB | PCDP_CONSOLE_INPUT)
  24. /* pcdp_uart.flags */
  25. #define PCDP_UART_EDGE_SENSITIVE (1 << 0)
  26. #define PCDP_UART_ACTIVE_LOW (1 << 1)
  27. #define PCDP_UART_PRIMARY_CONSOLE (1 << 2)
  28. #define PCDP_UART_IRQ (1 << 6) /* in pci_func for rev < 3 */
  29. #define PCDP_UART_PCI (1 << 7) /* in pci_func for rev < 3 */
  30. struct pcdp_uart {
  31. u8 type;
  32. u8 bits;
  33. u8 parity;
  34. u8 stop_bits;
  35. u8 pci_seg;
  36. u8 pci_bus;
  37. u8 pci_dev;
  38. u8 pci_func;
  39. u64 baud;
  40. struct acpi_generic_address addr;
  41. u16 pci_dev_id;
  42. u16 pci_vendor_id;
  43. u32 gsi;
  44. u32 clock_rate;
  45. u8 pci_prog_intfc;
  46. u8 flags;
  47. u16 conout_index;
  48. u32 reserved;
  49. } __attribute__((packed));
  50. #define PCDP_IF_PCI 1
  51. /* pcdp_if_pci.trans */
  52. #define PCDP_PCI_TRANS_IOPORT 0x02
  53. #define PCDP_PCI_TRANS_MMIO 0x01
  54. struct pcdp_if_pci {
  55. u8 interconnect;
  56. u8 reserved;
  57. u16 length;
  58. u8 segment;
  59. u8 bus;
  60. u8 dev;
  61. u8 fun;
  62. u16 dev_id;
  63. u16 vendor_id;
  64. u32 acpi_interrupt;
  65. u64 mmio_tra;
  66. u64 ioport_tra;
  67. u8 flags;
  68. u8 trans;
  69. } __attribute__((packed));
  70. struct pcdp_vga {
  71. u8 count; /* address space descriptors */
  72. } __attribute__((packed));
  73. /* pcdp_device.flags */
  74. #define PCDP_PRIMARY_CONSOLE 1
  75. struct pcdp_device {
  76. u8 type;
  77. u8 flags;
  78. u16 length;
  79. u16 efi_index;
  80. /* next data is pcdp_if_pci or pcdp_if_acpi (not yet supported) */
  81. /* next data is device specific type (currently only pcdp_vga) */
  82. } __attribute__((packed));
  83. struct pcdp {
  84. u8 signature[4];
  85. u32 length;
  86. u8 rev; /* PCDP v2.0 is rev 3 */
  87. u8 chksum;
  88. u8 oemid[6];
  89. u8 oem_tabid[8];
  90. u32 oem_rev;
  91. u8 creator_id[4];
  92. u32 creator_rev;
  93. u32 num_uarts;
  94. struct pcdp_uart uart[]; /* actual size is num_uarts */
  95. /* remainder of table is pcdp_device structures */
  96. } __attribute__((packed));