arch/all-pc/boot/grub2-aros/include/grub/pci.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2008,2009  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef GRUB_PCI_H
  20 #define GRUB_PCI_H      1
  21
  22 #ifndef ASM_FILE
  23 #include <grub/types.h>
  24 #include <grub/symbol.h>
  25 #endif
  26
  27 #define  GRUB_PCI_ADDR_SPACE_MASK       0x01
  28 #define  GRUB_PCI_ADDR_SPACE_MEMORY     0x00
  29 #define  GRUB_PCI_ADDR_SPACE_IO         0x01
  30
  31 #define  GRUB_PCI_ADDR_MEM_TYPE_MASK    0x06
  32 #define  GRUB_PCI_ADDR_MEM_TYPE_32      0x00    /* 32 bit address */
  33 #define  GRUB_PCI_ADDR_MEM_TYPE_1M      0x02    /* Below 1M [obsolete] */
  34 #define  GRUB_PCI_ADDR_MEM_TYPE_64      0x04    /* 64 bit address */
  35 #define  GRUB_PCI_ADDR_MEM_PREFETCH     0x08    /* prefetchable */
  36
  37 #define  GRUB_PCI_ADDR_MEM_MASK         ~0xf
  38 #define  GRUB_PCI_ADDR_IO_MASK          ~0x03
  39
  40 #define  GRUB_PCI_REG_PCI_ID       0x00
  41 #define  GRUB_PCI_REG_VENDOR       0x00
  42 #define  GRUB_PCI_REG_DEVICE       0x02
  43 #define  GRUB_PCI_REG_COMMAND      0x04
  44 #define  GRUB_PCI_REG_STATUS       0x06
  45 #define  GRUB_PCI_REG_REVISION     0x08
  46 #define  GRUB_PCI_REG_CLASS        0x08
  47 #define  GRUB_PCI_REG_CACHELINE    0x0c
  48 #define  GRUB_PCI_REG_LAT_TIMER    0x0d
  49 #define  GRUB_PCI_REG_HEADER_TYPE  0x0e
  50 #define  GRUB_PCI_REG_BIST         0x0f
  51 #define  GRUB_PCI_REG_ADDRESSES    0x10
  52
  53 /* Beware that 64-bit address takes 2 registers.  */
  54 #define  GRUB_PCI_REG_ADDRESS_REG0 0x10
  55 #define  GRUB_PCI_REG_ADDRESS_REG1 0x14
  56 #define  GRUB_PCI_REG_ADDRESS_REG2 0x18
  57 #define  GRUB_PCI_REG_ADDRESS_REG3 0x1c
  58 #define  GRUB_PCI_REG_ADDRESS_REG4 0x20
  59 #define  GRUB_PCI_REG_ADDRESS_REG5 0x24
  60
  61 #define  GRUB_PCI_REG_CIS_POINTER  0x28
  62 #define  GRUB_PCI_REG_SUBVENDOR    0x2c
  63 #define  GRUB_PCI_REG_SUBSYSTEM    0x2e
  64 #define  GRUB_PCI_REG_ROM_ADDRESS  0x30
  65 #define  GRUB_PCI_REG_CAP_POINTER  0x34
  66 #define  GRUB_PCI_REG_IRQ_LINE     0x3c
  67 #define  GRUB_PCI_REG_IRQ_PIN      0x3d
  68 #define  GRUB_PCI_REG_MIN_GNT      0x3e
  69 #define  GRUB_PCI_REG_MAX_LAT      0x3f
  70
  71 #define  GRUB_PCI_COMMAND_IO_ENABLED    0x0001
  72 #define  GRUB_PCI_COMMAND_MEM_ENABLED   0x0002
  73 #define  GRUB_PCI_COMMAND_BUS_MASTER    0x0004
  74 #define  GRUB_PCI_COMMAND_PARITY_ERROR  0x0040
  75 #define  GRUB_PCI_COMMAND_SERR_ENABLE   0x0100
  76
  77 #define  GRUB_PCI_STATUS_CAPABILITIES      0x0010
  78 #define  GRUB_PCI_STATUS_66MHZ_CAPABLE     0x0020
  79 #define  GRUB_PCI_STATUS_FAST_B2B_CAPABLE  0x0080
  80
  81 #define  GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT 9
  82 #define  GRUB_PCI_STATUS_DEVSEL_TIMING_MASK 0x0600
  83 #define  GRUB_PCI_CLASS_SUBCLASS_VGA  0x0300
  84
  85 #ifndef ASM_FILE
  86
  87 enum
  88   {
  89     GRUB_PCI_CLASS_NETWORK = 0x02
  90   };
  91 enum
  92   {
  93     GRUB_PCI_CAP_POWER_MANAGEMENT = 0x01
  94   };
  95
  96 enum
  97   {
  98     GRUB_PCI_VENDOR_BROADCOM = 0x14e4
  99   };
 100
 101
 102 typedef grub_uint32_t grub_pci_id_t;
 103
 104 #ifdef GRUB_MACHINE_EMU
 105 #include <grub/pciutils.h>
 106 #else
 107 typedef grub_uint32_t grub_pci_address_t;
 108 struct grub_pci_device
 109 {
 110   int bus;
 111   int device;
 112   int function;
 113 };
 114 typedef struct grub_pci_device grub_pci_device_t;
 115 static inline int
 116 grub_pci_get_bus (grub_pci_device_t dev)
 117 {
 118   return dev.bus;
 119 }
 120
 121 static inline int
 122 grub_pci_get_device (grub_pci_device_t dev)
 123 {
 124   return dev.device;
 125 }
 126
 127 static inline int
 128 grub_pci_get_function (grub_pci_device_t dev)
 129 {
 130   return dev.function;
 131 }
 132 #include <grub/cpu/pci.h>
 133 #endif
 134
 135 typedef int NESTED_FUNC_ATTR (*grub_pci_iteratefunc_t)
 136      (grub_pci_device_t dev, grub_pci_id_t pciid);
 137
 138 grub_pci_address_t EXPORT_FUNC(grub_pci_make_address) (grub_pci_device_t dev,
 139                                                        int reg);
 140
 141 void EXPORT_FUNC(grub_pci_iterate) (grub_pci_iteratefunc_t hook);
 142
 143 struct grub_pci_dma_chunk;
 144
 145 struct grub_pci_dma_chunk *EXPORT_FUNC(grub_memalign_dma32) (grub_size_t align,
 146                                                              grub_size_t size);
 147 void EXPORT_FUNC(grub_dma_free) (struct grub_pci_dma_chunk *ch);
 148 volatile void *EXPORT_FUNC(grub_dma_get_virt) (struct grub_pci_dma_chunk *ch);
 149 grub_uint32_t EXPORT_FUNC(grub_dma_get_phys) (struct grub_pci_dma_chunk *ch);
 150
 151 static inline void *
 152 grub_dma_phys2virt (grub_uint32_t phys, struct grub_pci_dma_chunk *chunk)
 153 {
 154   return ((grub_uint8_t *) grub_dma_get_virt (chunk)
 155           + (phys - grub_dma_get_phys (chunk)));
 156 }
 157
 158 static inline grub_uint32_t
 159 grub_dma_virt2phys (volatile void *virt, struct grub_pci_dma_chunk *chunk)
 160 {
 161   return (((grub_uint8_t *) virt - (grub_uint8_t *) grub_dma_get_virt (chunk))
 162           + grub_dma_get_phys (chunk));
 163 }
 164
 165 grub_uint8_t
 166 EXPORT_FUNC (grub_pci_find_capability) (grub_pci_device_t dev, grub_uint8_t cap);
 167
 168 #endif
 169
 170 #endif /* GRUB_PCI_H */