[IA64-SGI] - New SN hardware support - use_alias_space
Use local SHUB alias space when referencing MMRs that are known
to be node local. There is a slight performance benefit & code
simplification.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index af061db..607938c2 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -5,7 +5,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
#include <linux/irq.h>
@@ -76,16 +76,14 @@
static void sn_ack_irq(unsigned int irq)
{
- uint64_t event_occurred, mask = 0;
- int nasid;
+ u64 event_occurred, mask = 0;
irq = irq & 0xff;
- nasid = get_nasid();
event_occurred =
- HUB_L((uint64_t *) GLOBAL_MMR_ADDR(nasid, SH_EVENT_OCCURRED));
+ HUB_L((u64*)LOCAL_MMR_ADDR(SH_EVENT_OCCURRED));
mask = event_occurred & SH_ALL_INT_MASK;
- HUB_S((uint64_t *) GLOBAL_MMR_ADDR(nasid, SH_EVENT_OCCURRED_ALIAS),
- mask);
+ HUB_S((u64*)LOCAL_MMR_ADDR(SH_EVENT_OCCURRED_ALIAS),
+ mask);
__set_bit(irq, (volatile void *)pda->sn_in_service_ivecs);
move_irq(irq);
@@ -93,15 +91,12 @@
static void sn_end_irq(unsigned int irq)
{
- int nasid;
int ivec;
- uint64_t event_occurred;
+ u64 event_occurred;
ivec = irq & 0xff;
if (ivec == SGI_UART_VECTOR) {
- nasid = get_nasid();
- event_occurred = HUB_L((uint64_t *) GLOBAL_MMR_ADDR
- (nasid, SH_EVENT_OCCURRED));
+ event_occurred = HUB_L((u64*)LOCAL_MMR_ADDR (SH_EVENT_OCCURRED));
/* If the UART bit is set here, we may have received an
* interrupt from the UART that the driver missed. To
* make sure, we IPI ourselves to force us to look again.
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index ae455b6..0f25425 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -297,7 +297,7 @@
* If CE ever needs the sn_dma_flush mechanism, we will have
* to account for that here and in tioce_bus_fixup().
*/
- uint32_t tio_id = REMOTE_HUB_L(nasid, TIO_NODE_ID);
+ uint32_t tio_id = HUB_L(TIO_IOSPACE_ADDR(nasid, TIO_NODE_ID));
uint32_t revnum = XWIDGET_PART_REV_NUM(tio_id);
/* TIOCP BRINGUP WAR (PV907516): Don't write buffer flush reg */