grub/bus/pci.c

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/* pci.c - Generic PCI interfaces. */
/*
* GRUB -- GRand Unified Bootloader
2010-01-03 Robert Millan <rmh.grub@aybabtu.com> * boot/i386/pc/boot.S: Update copyright year. * boot/i386/pc/cdboot.S: Likewise. * boot/i386/pc/diskboot.S: Likewise. * boot/i386/pc/lnxboot.S: Likewise. * boot/i386/pc/pxeboot.S: Likewise. * bus/pci.c: Likewise. * commands/cmp.c: Likewise. * commands/help.c: Likewise. * commands/hexdump.c: Likewise. * commands/i386/pc/halt.c: Likewise. * commands/i386/pc/play.c: Likewise. * commands/i386/pc/vbeinfo.c: Likewise. * commands/ls.c: Likewise. * commands/test.c: Likewise. * disk/dmraid_nvidia.c: Likewise. * disk/i386/pc/biosdisk.c: Likewise. * disk/ieee1275/nand.c: Likewise. * disk/ieee1275/ofdisk.c: Likewise. * disk/lvm.c: Likewise. * disk/raid.c: Likewise. * disk/raid6_recover.c: Likewise. * disk/scsi.c: Likewise. * fs/affs.c: Likewise. * fs/cpio.c: Likewise. * fs/ext2.c: Likewise. * fs/hfs.c: Likewise. * fs/iso9660.c: Likewise. * fs/ntfs.c: Likewise. * fs/sfs.c: Likewise. * fs/udf.c: Likewise. * fs/ufs.c: Likewise. * fs/xfs.c: Likewise. * gencmdlist.sh: Likewise. * genmk.rb: Likewise. * include/grub/disk.h: Likewise. * include/grub/efi/api.h: Likewise. * include/grub/efi/efi.h: Likewise. * include/grub/efi/pe32.h: Likewise. * include/grub/elf.h: Likewise. * include/grub/fs.h: Likewise. * include/grub/i386/at_keyboard.h: Likewise. * include/grub/i386/pc/memory.h: Likewise. * include/grub/i386/pc/vbe.h: Likewise. * include/grub/i386/pci.h: Likewise. * include/grub/i386/tsc.h: Likewise. * include/grub/ieee1275/ieee1275.h: Likewise. * include/grub/ntfs.h: Likewise. * include/grub/sparc64/ieee1275/ieee1275.h: Likewise. * include/grub/sparc64/libgcc.h: Likewise. * include/grub/symbol.h: Likewise. * include/grub/types.h: Likewise. * include/multiboot2.h: Likewise. * io/gzio.c: Likewise. * kern/device.c: Likewise. * kern/disk.c: Likewise. * kern/efi/efi.c: Likewise. * kern/efi/mm.c: Likewise. * kern/elf.c: Likewise. * kern/file.c: Likewise. * kern/i386/dl.c: Likewise. * kern/i386/pc/init.c: Likewise. * kern/i386/pc/startup.S: Likewise. * kern/ieee1275/ieee1275.c: Likewise. * kern/ieee1275/init.c: Likewise. * kern/main.c: Likewise. * kern/mm.c: Likewise. * kern/powerpc/dl.c: Likewise. * kern/sparc64/dl.c: Likewise. * kern/x86_64/dl.c: Likewise. * lib/hexdump.c: Likewise. * loader/efi/appleloader.c: Likewise. * loader/i386/ieee1275/linux.c: Likewise. * loader/i386/pc/chainloader.c: Likewise. * loader/i386/pc/linux.c: Likewise. * loader/i386/pc/multiboot2.c: Likewise. * loader/ieee1275/multiboot2.c: Likewise. * loader/multiboot2.c: Likewise. * loader/multiboot_loader.c: Likewise. * loader/powerpc/ieee1275/linux.c: Likewise. * normal/completion.c: Likewise. * normal/menu_entry.c: Likewise. * partmap/apple.c: Likewise. * util/grub.d/10_hurd.in: Likewise. * util/hostfs.c: Likewise. * video/readers/png.c: Likewise.
2010-01-03 22:05:07 +00:00
* Copyright (C) 2007,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/dl.h>
#include <grub/pci.h>
grub_pci_address_t
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grub_pci_make_address (grub_pci_device_t dev, int reg)
{
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return (1 << 31) | (dev.bus << 16) | (dev.device << 11)
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| (dev.function << 8) | reg;
}
void
grub_pci_iterate (grub_pci_iteratefunc_t hook)
{
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grub_pci_device_t dev;
grub_pci_address_t addr;
grub_pci_id_t id;
grub_uint32_t hdr;
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for (dev.bus = 0; dev.bus < GRUB_PCI_NUM_BUS; dev.bus++)
{
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for (dev.device = 0; dev.device < GRUB_PCI_NUM_DEVICES; dev.device++)
{
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for (dev.function = 0; dev.function < 8; dev.function++)
{
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_PCI_ID);
id = grub_pci_read (addr);
/* Check if there is a device present. */
if (id >> 16 == 0xFFFF)
continue;
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if (hook (dev, id))
return;
/* Probe only func = 0 if the device if not multifunction */
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if (dev.function == 0)
{
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_CACHELINE);
hdr = grub_pci_read (addr);
if (!(hdr & 0x800000))
break;
}
}
}
}
}