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authorJeff Garzik <jeff@garzik.org>2007-10-11 16:57:27 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 15:03:18 -0700
commit32a2eea795643929a43cbbba00d8c4a176b309bf (patch)
treec0bbf2e3ef330ec9f36c42dfbe6c360efe685f82 /drivers/pci
parent11949255d9433ea6c0908b7390ec4faecd1d4cf0 (diff)
PCI: Add 'nodomains' boot option, and pci_domains_supported global
* Introduce pci_domains_supported global, hardcoded to zero if !CONFIG_PCI_DOMAINS. * Introduce 'nodomains' boot option, which clears pci_domains_supported on platforms that enable it by default (x86, x86-64, and others when they are converted to use this). Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 2dd5c282fab..728b3c863d8 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -23,6 +23,10 @@
unsigned int pci_pm_d3_delay = 10;
+#ifdef CONFIG_PCI_DOMAINS
+int pci_domains_supported = 1;
+#endif
+
#define DEFAULT_CARDBUS_IO_SIZE (256)
#define DEFAULT_CARDBUS_MEM_SIZE (64*1024*1024)
/* pci=cbmemsize=nnM,cbiosize=nn can override this */
@@ -1567,6 +1571,13 @@ int pci_select_bars(struct pci_dev *dev, unsigned long flags)
return bars;
}
+static void __devinit pci_no_domains(void)
+{
+#ifdef CONFIG_PCI_DOMAINS
+ pci_domains_supported = 0;
+#endif
+}
+
static int __devinit pci_init(void)
{
struct pci_dev *dev = NULL;
@@ -1588,6 +1599,8 @@ static int __devinit pci_setup(char *str)
pci_no_msi();
} else if (!strcmp(str, "noaer")) {
pci_no_aer();
+ } else if (!strcmp(str, "nodomains")) {
+ pci_no_domains();
} else if (!strncmp(str, "cbiosize=", 9)) {
pci_cardbus_io_size = memparse(str + 9, &str);
} else if (!strncmp(str, "cbmemsize=", 10)) {