diff options
| author | Jack Steiner <steiner@sgi.com> | 2005-08-11 10:26:00 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-08-17 15:29:43 -0700 |
| commit | 0aa2c72e59cf1d09a0b321e4e6292af78a51b8b3 (patch) | |
| tree | 8d4e6cb59dac0bb17124f8ecac8dbfe450231b8e /arch/ia64 | |
| parent | 3d14487b2677cc44b5d1ef115d9d4301ec046591 (diff) | |
| download | linux-0aa2c72e59cf1d09a0b321e4e6292af78a51b8b3.tar.gz | |
[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>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/sn/kernel/irq.c | 19 | ||||
| -rw-r--r-- | arch/ia64/sn/pci/pcibr/pcibr_dma.c | 2 |
2 files changed, 8 insertions, 13 deletions
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c index af061dba246f..607938c288bb 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_enable_irq(unsigned int irq) 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_ack_irq(unsigned int irq) 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 ae455b6b1897..0f254255f6a1 100644 --- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c +++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c @@ -297,7 +297,7 @@ void sn_dma_flush(uint64_t addr) * 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 */ |