UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

[PATCH] mmconfig: Move e820 check into pci_mmcfg_reject_broken() 

This is just cleanup. It moves to e820 check into pci_mmcfg_reject_broken().

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
OGAWA Hirofumi 2007-02-13 13:26:20 +01:00 committed by Andi Kleen
parent 56829d1982
commit 26054ed02b
1 changed files with 31 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
arch/i386/pci/mmconfig-shared.c
View File

@ -191,9 +191,16 @@ static void __init pci_mmcfg_insert_resources(void)
}
}
static void __init pci_mmcfg_reject_broken(void)
static void __init pci_mmcfg_reject_broken(int type)
{
typeof(pci_mmcfg_config[0]) *cfg = &pci_mmcfg_config[0];
typeof(pci_mmcfg_config[0]) *cfg;
if ((pci_mmcfg_config_num == 0) ||
(pci_mmcfg_config == NULL) ||
(pci_mmcfg_config[0].address == 0))
return;
cfg = &pci_mmcfg_config[0];
/*
* Handle more broken MCFG tables on Asus etc.
@ -202,13 +209,29 @@ static void __init pci_mmcfg_reject_broken(void)
if (pci_mmcfg_config_num == 1 &&
cfg->pci_segment == 0 &&
(cfg->start_bus_number | cfg->end_bus_number) == 0) {
kfree(pci_mmcfg_config);
pci_mmcfg_config = NULL;
pci_mmcfg_config_num = 0;
printk(KERN_ERR "PCI: start and end of bus number is 0. "
"Rejected as broken MCFG.");
"Rejected as broken MCFG.\n");
goto reject;
}
/*
* Only do this check when type 1 works. If it doesn't work
* assume we run on a Mac and always use MCFG
*/
if (type == 1 && !e820_all_mapped(cfg->address,
cfg->address + MMCONFIG_APER_MIN,
E820_RESERVED)) {
printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %Lx is not"
" E820-reserved\n", cfg->address);
goto reject;
}
return;
reject:
printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
kfree(pci_mmcfg_config);
pci_mmcfg_config = NULL;
pci_mmcfg_config_num = 0;
}
void __init pci_mmcfg_init(int type)
@ -223,7 +246,7 @@ void __init pci_mmcfg_init(int type)
if (!known_bridge) {
acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg);
pci_mmcfg_reject_broken();
pci_mmcfg_reject_broken(type);
}
if ((pci_mmcfg_config_num == 0) ||
@ -231,18 +254,6 @@ void __init pci_mmcfg_init(int type)
(pci_mmcfg_config[0].address == 0))
return;
/* Only do this check when type 1 works. If it doesn't work
assume we run on a Mac and always use MCFG */
if (type == 1 && !known_bridge &&
!e820_all_mapped(pci_mmcfg_config[0].address,
pci_mmcfg_config[0].address + MMCONFIG_APER_MIN,
E820_RESERVED)) {
printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %Lx is not E820-reserved\n",
pci_mmcfg_config[0].address);
printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
return;
}
if (pci_mmcfg_arch_init()) {
if (type == 1)
unreachable_devices();