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tile PCI RC: support pci=off boot arg for tilepro 

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2013-08-05 15:02:03 -04:00
parent 523c178edf
commit 2be705523f
1 changed files with 17 additions and 0 deletions
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17
arch/tile/kernel/pci.c
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@ -51,6 +51,8 @@
*
*/
static int pci_probe = 1;
/*
* This flag tells if the platform is TILEmpower that needs
* special configuration for the PLX switch chip.
@ -143,6 +145,11 @@ int __init tile_pci_init(void)
{
int i;
if (!pci_probe) {
pr_info("PCI: disabled by boot argument\n");
return 0;
}
pr_info("PCI: Searching for controllers...\n");
/* Re-init number of PCIe controllers to support hot-plug feature. */
@ -378,6 +385,16 @@ void pcibios_set_master(struct pci_dev *dev)
/* No special bus mastering setup handling. */
}
/* Process any "pci=" kernel boot arguments. */
char * __init pcibios_setup(char *str)
{
if (!strcmp(str, "off")) {
pci_probe = 0;
return NULL;
}
return str;
}
/*
* Enable memory and/or address decoding, as appropriate, for the
* device described by the 'dev' struct.