Hi Tony, This one changes the SN2 specific PCI drivers to use ioremap() for obtaining the real address to access for the PCI registers instead of manually calculating them with __IA64_UNCACHED_OFFSET. The patch should have no real change when running on a normal Linux kernel, but when running as a paravirtualized it is needed. Thanks, Jes
Use ioremap() on SN2 specific PIC and TIO registers rather than
manually setting the __IA64_UNCACHED_OFFSET bits in the address we get
from the PROM.
Signed-off-by: Jes Sorensen <jes@xxxxxxx>
---
arch/ia64/sn/pci/pcibr/pcibr_provider.c | 7 ++++---
arch/ia64/sn/pci/tioca_provider.c | 4 +++-
arch/ia64/sn/pci/tioce_provider.c | 4 +++-
3 files changed, 10 insertions(+), 5 deletions(-)
Index: linux-2.6/arch/ia64/sn/pci/pcibr/pcibr_provider.c
===================================================================
--- linux-2.6.orig/arch/ia64/sn/pci/pcibr/pcibr_provider.c
+++ linux-2.6/arch/ia64/sn/pci/pcibr/pcibr_provider.c
@@ -15,6 +15,7 @@
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include <asm/sn/sn_sal.h>
+#include <asm/sn/pic.h>
#include <asm/sn/sn2/sn_hwperf.h>
#include "xtalk/xwidgetdev.h"
#include "xtalk/hubdev.h"
@@ -130,9 +131,9 @@ pcibr_bus_fixup(struct pcibus_bussoft *p
}
memcpy(soft, prom_bussoft, sizeof(struct pcibus_info));
- soft->pbi_buscommon.bs_base =
- (((u64) soft->pbi_buscommon.
- bs_base << 4) >> 4) | __IA64_UNCACHED_OFFSET;
+ soft->pbi_buscommon.bs_base = (unsigned long)
+ ioremap(REGION_OFFSET(soft->pbi_buscommon.bs_base),
+ sizeof(struct pic));
spin_lock_init(&soft->pbi_lock);
Index: linux-2.6/arch/ia64/sn/pci/tioca_provider.c
===================================================================
--- linux-2.6.orig/arch/ia64/sn/pci/tioca_provider.c
+++ linux-2.6/arch/ia64/sn/pci/tioca_provider.c
@@ -610,7 +610,9 @@ tioca_bus_fixup(struct pcibus_bussoft *p
return NULL;
memcpy(tioca_common, prom_bussoft, sizeof(struct tioca_common));
- tioca_common->ca_common.bs_base |= __IA64_UNCACHED_OFFSET;
+ tioca_common->ca_common.bs_base = (unsigned long)
+ ioremap(REGION_OFFSET(tioca_common->ca_common.bs_base),
+ sizeof(struct tioca_common));
/* init kernel-private area */
Index: linux-2.6/arch/ia64/sn/pci/tioce_provider.c
===================================================================
--- linux-2.6.orig/arch/ia64/sn/pci/tioce_provider.c
+++ linux-2.6/arch/ia64/sn/pci/tioce_provider.c
@@ -1002,7 +1002,9 @@ tioce_bus_fixup(struct pcibus_bussoft *p
return NULL;
memcpy(tioce_common, prom_bussoft, sizeof(struct tioce_common));
- tioce_common->ce_pcibus.bs_base |= __IA64_UNCACHED_OFFSET;
+ tioce_common->ce_pcibus.bs_base = (unsigned long)
+ ioremap(REGION_OFFSET(tioce_common->ce_pcibus.bs_base),
+ sizeof(struct tioce_common));
tioce_kern = tioce_kern_init(tioce_common);
if (tioce_kern == NULL) {
|