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

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2008  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_MACHINE_PCI_H
  20 #define GRUB_MACHINE_PCI_H      1
  21
  22 #ifndef ASM_FILE
  23 #include <grub/types.h>
  24 #include <grub/cpu/io.h>
  25 #endif
  26
  27 #define GRUB_LOONGSON_OHCI_PCIID 0x00351033
  28 #define GRUB_LOONGSON_EHCI_PCIID 0x00e01033
  29
  30 #define GRUB_PCI_NUM_BUS        1
  31 #define GRUB_PCI_NUM_DEVICES    16
  32
  33 #define GRUB_MACHINE_PCI_IO_BASE           0xbfd00000
  34 #define GRUB_MACHINE_PCI_CONFSPACE         0xbfe80000
  35 #define GRUB_MACHINE_PCI_CONTROLLER_HEADER 0xbfe00000
  36
  37 #define GRUB_MACHINE_PCI_CONF_CTRL_REG_ADDR 0xbfe00118
  38
  39 #ifndef ASM_FILE
  40 #define GRUB_MACHINE_PCI_CONF_CTRL_REG    (*(volatile grub_uint32_t *) \
  41                                            GRUB_MACHINE_PCI_CONF_CTRL_REG_ADDR)
  42 #define GRUB_MACHINE_PCI_IO_CTRL_REG      (*(volatile grub_uint32_t *) 0xbfe00110)
  43 #endif
  44 #define GRUB_MACHINE_PCI_WIN_MASK_SIZE    6
  45 #define GRUB_MACHINE_PCI_WIN_MASK         ((1 << GRUB_MACHINE_PCI_WIN_MASK_SIZE) - 1)
  46
  47 /* We have 3 PCI windows.  */
  48 #define GRUB_MACHINE_PCI_NUM_WIN          3
  49 /* Each window is 64MiB.  */
  50 #define GRUB_MACHINE_PCI_WIN_SHIFT        26
  51 #define GRUB_MACHINE_PCI_WIN_OFFSET_MASK  ((1 << GRUB_MACHINE_PCI_WIN_SHIFT) - 1)
  52
  53 #define GRUB_MACHINE_PCI_WIN_SIZE         0x04000000
  54 /* Graphical acceleration takes 1 MiB away.  */
  55 #define GRUB_MACHINE_PCI_WIN1_SIZE        0x03f00000
  56
  57 #define GRUB_MACHINE_PCI_WIN1_ADDR        0xb0000000
  58 #define GRUB_MACHINE_PCI_WIN2_ADDR        0xb4000000
  59 #define GRUB_MACHINE_PCI_WIN3_ADDR        0xb8000000
  60
  61 #ifndef ASM_FILE
  62 static inline grub_uint32_t
  63 grub_pci_read (grub_pci_address_t addr)
  64 {
  65   GRUB_MACHINE_PCI_CONF_CTRL_REG = 1 << ((addr >> 11) & 0xf);
  66   return *(volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONFSPACE
  67                                       | (addr & 0x07ff));
  68 }
  69
  70 static inline grub_uint16_t
  71 grub_pci_read_word (grub_pci_address_t addr)
  72 {
  73   GRUB_MACHINE_PCI_CONF_CTRL_REG = 1 << ((addr >> 11) & 0xf);
  74   return *(volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONFSPACE
  75                                       | (addr & 0x07ff));
  76 }
  77
  78 static inline grub_uint8_t
  79 grub_pci_read_byte (grub_pci_address_t addr)
  80 {
  81   GRUB_MACHINE_PCI_CONF_CTRL_REG = 1 << ((addr >> 11) & 0xf);
  82   return *(volatile grub_uint8_t *) (GRUB_MACHINE_PCI_CONFSPACE
  83                                      | (addr & 0x07ff));
  84 }
  85
  86 static inline void
  87 grub_pci_write (grub_pci_address_t addr, grub_uint32_t data)
  88 {
  89   GRUB_MACHINE_PCI_CONF_CTRL_REG = 1 << ((addr >> 11) & 0xf);
  90   *(volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONFSPACE
  91                                | (addr & 0x07ff)) = data;
  92 }
  93
  94 static inline void
  95 grub_pci_write_word (grub_pci_address_t addr, grub_uint16_t data)
  96 {
  97   GRUB_MACHINE_PCI_CONF_CTRL_REG = 1 << ((addr >> 11) & 0xf);
  98   *(volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONFSPACE
  99                                | (addr & 0x07ff)) = data;
 100 }
 101
 102 static inline void
 103 grub_pci_write_byte (grub_pci_address_t addr, grub_uint8_t data)
 104 {
 105   GRUB_MACHINE_PCI_CONF_CTRL_REG = 1 << ((addr >> 11) & 0xf);
 106   *(volatile grub_uint8_t *) (GRUB_MACHINE_PCI_CONFSPACE
 107                               | (addr & 0x07ff)) = data;
 108 }
 109
 110 volatile void *
 111 EXPORT_FUNC (grub_pci_device_map_range) (grub_pci_device_t dev,
 112                                          grub_addr_t base, grub_size_t size);
 113 void *
 114 EXPORT_FUNC (grub_pci_device_map_range_cached) (grub_pci_device_t dev,
 115                                                 grub_addr_t base,
 116                                                 grub_size_t size);
 117 void
 118 EXPORT_FUNC (grub_pci_device_unmap_range) (grub_pci_device_t dev,
 119                                            volatile void *mem,
 120                                            grub_size_t size);
 121 #endif
 122
 123 #endif /* GRUB_MACHINE_PCI_H */