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automake commit without merge history

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This commit is contained in:
BVK Chaitanya 2010-05-06 11:34:04 +05:30
parent 265d68cd10
commit 8c41176882
810 changed files with 4980 additions and 2508 deletions
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65
grub-core/bus/pci.c Normal file
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/* pci.c - Generic PCI interfaces. */
/*
* GRUB -- GRand Unified Bootloader
* 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
grub_pci_make_address (grub_pci_device_t dev, int reg)
{
return (1 << 31) | (dev.bus << 16) | (dev.device << 11)
| (dev.function << 8) | reg;
}
void
grub_pci_iterate (grub_pci_iteratefunc_t hook)
{
grub_pci_device_t dev;
grub_pci_address_t addr;
grub_pci_id_t id;
grub_uint32_t hdr;
for (dev.bus = 0; dev.bus < GRUB_PCI_NUM_BUS; dev.bus++)
{
for (dev.device = 0; dev.device < GRUB_PCI_NUM_DEVICES; dev.device++)
{
for (dev.function = 0; dev.function < 8; dev.function++)
{
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;
if (hook (dev, id))
return;
/* Probe only func = 0 if the device if not multifunction */
if (dev.function == 0)
{
addr = grub_pci_make_address (dev, GRUB_PCI_REG_CACHELINE);
hdr = grub_pci_read (addr);
if (!(hdr & 0x800000))
break;
}
}
}
}
}