Merge tag 'please-pull-ia64_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 updates from Tony Luck:
 "The big change here is removal of support for SGI Altix"

* tag 'please-pull-ia64_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: (33 commits)
  genirq: remove the is_affinity_mask_valid hook
  ia64: remove CONFIG_SWIOTLB ifdefs
  ia64: remove support for machvecs
  ia64: move the screen_info setup to common code
  ia64: move the ROOT_DEV setup to common code
  ia64: rework iommu probing
  ia64: remove the unused sn_coherency_id symbol
  ia64: remove the SGI UV simulator support
  ia64: remove the zx1 swiotlb machvec
  ia64: remove CONFIG_ACPI ifdefs
  ia64: remove CONFIG_PCI ifdefs
  ia64: remove the hpsim platform
  ia64: remove now unused machvec indirections
  ia64: remove support for the SGI SN2 platform
  drivers: remove the SGI SN2 IOC4 base support
  drivers: remove the SGI SN2 IOC3 base support
  qla2xxx: remove SGI SN2 support
  qla1280: remove SGI SN2 support
  misc/sgi-xp: remove SGI SN2 support
  char/mspec: remove SGI SN2 support
  ...

11 files changed, 13 insertions, 2764 deletions

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 2794f4b3f62d..df0fc997dc3e 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -26,28 +26,6 @@ config DEVKMEM
 	  kind of kernel debugging operations.
 	  When in doubt, say "N".
 
-config SGI_SNSC
-	bool "SGI Altix system controller communication support"
-	depends on (IA64_SGI_SN2 || IA64_GENERIC)
-	help
-	  If you have an SGI Altix and you want to enable system
-	  controller communication from user space (you want this!),
-	  say Y.  Otherwise, say N.
-
-config SGI_TIOCX
-       bool "SGI TIO CX driver support"
-       depends on (IA64_SGI_SN2 || IA64_GENERIC)
-       help
-         If you have an SGI Altix and you have fpga devices attached
-         to your TIO, say Y here, otherwise say N.
-
-config SGI_MBCS
-       tristate "SGI FPGA Core Services driver support"
-       depends on SGI_TIOCX
-       help
-         If you have an SGI Altix with an attached SABrick
-         say Y or M here, otherwise say N.
-
 source "drivers/tty/serial/Kconfig"
 source "drivers/tty/serdev/Kconfig"
 
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index fbea7dd12932..7c5ea6f9df14 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -9,11 +9,9 @@ obj-y				+= misc.o
 obj-$(CONFIG_ATARI_DSP56K)	+= dsp56k.o
 obj-$(CONFIG_VIRTIO_CONSOLE)	+= virtio_console.o
 obj-$(CONFIG_RAW_DRIVER)	+= raw.o
-obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o
 obj-$(CONFIG_MSPEC)		+= mspec.o
 obj-$(CONFIG_UV_MMTIMER)	+= uv_mmtimer.o
 obj-$(CONFIG_IBM_BSR)		+= bsr.o
-obj-$(CONFIG_SGI_MBCS)		+= mbcs.o
 
 obj-$(CONFIG_PRINTER)		+= lp.o
 
diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index 6231714ef3c8..812d6aa6e013 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -111,14 +111,14 @@ config AGP_VIA
 
 config AGP_I460
 	tristate "Intel 460GX chipset support"
-	depends on AGP && (IA64_DIG || IA64_GENERIC)
+	depends on AGP && IA64
 	help
 	  This option gives you AGP GART support for the Intel 460GX chipset
 	  for IA64 processors.
 
 config AGP_HP_ZX1
 	tristate "HP ZX1 chipset AGP support"
-	depends on AGP && (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC)
+	depends on AGP && IA64
 	help
 	  This option gives you AGP GART support for the HP ZX1 chipset
 	  for IA64 processors.
@@ -150,13 +150,6 @@ config AGP_EFFICEON
 	  This option gives you AGP support for the Transmeta Efficeon
 	  series processors with integrated northbridges.
 
-config AGP_SGI_TIOCA
-        tristate "SGI TIO chipset AGP support"
-        depends on AGP && (IA64_SGI_SN2 || IA64_GENERIC)
-        help
-          This option gives you AGP GART support for the SGI TIO chipset
-          for IA64 processors.
-
 config INTEL_GTT
 	tristate
 	depends on X86 && PCI
diff --git a/drivers/char/agp/Makefile b/drivers/char/agp/Makefile
index 4a786ffd9dee..cb2497d157f6 100644
--- a/drivers/char/agp/Makefile
+++ b/drivers/char/agp/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_AGP_I460)		+= i460-agp.o
 obj-$(CONFIG_AGP_INTEL)		+= intel-agp.o
 obj-$(CONFIG_INTEL_GTT)		+= intel-gtt.o
 obj-$(CONFIG_AGP_NVIDIA)	+= nvidia-agp.o
-obj-$(CONFIG_AGP_SGI_TIOCA)	+= sgi-agp.o
 obj-$(CONFIG_AGP_SIS)		+= sis-agp.o
 obj-$(CONFIG_AGP_SWORKS)	+= sworks-agp.o
 obj-$(CONFIG_AGP_UNINORTH)	+= uninorth-agp.o
diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c
deleted file mode 100644
index e7d5bdc02d93..000000000000
--- a/drivers/char/agp/sgi-agp.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2003-2005 Silicon Graphics, Inc.  All Rights Reserved.
- */
-
-/*
- * SGI TIOCA AGPGART routines.
- *
- */
-
-#include <linux/acpi.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/agp_backend.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/io.h>
-#include <asm/sn/pcidev.h>
-#include <asm/sn/pcibus_provider_defs.h>
-#include <asm/sn/tioca_provider.h>
-#include "agp.h"
-
-extern int agp_memory_reserved;
-extern uint32_t tioca_gart_found;
-extern struct list_head tioca_list;
-static struct agp_bridge_data **sgi_tioca_agp_bridges;
-
-/*
- * The aperature size and related information is set up at TIOCA init time.
- * Values for this table will be extracted and filled in at
- * sgi_tioca_fetch_size() time.
- */
-
-static struct aper_size_info_fixed sgi_tioca_sizes[] = {
-	{0, 0, 0},
-};
-
-static struct page *sgi_tioca_alloc_page(struct agp_bridge_data *bridge)
-{
-	struct page *page;
-	int nid;
-	struct tioca_kernel *info =
-	    (struct tioca_kernel *)bridge->dev_private_data;
-
-	nid = info->ca_closest_node;
-	page = alloc_pages_node(nid, GFP_KERNEL, 0);
-	if (!page)
-		return NULL;
-
-	get_page(page);
-	atomic_inc(&agp_bridge->current_memory_agp);
-	return page;
-}
-
-/*
- * Flush GART tlb's.  Cannot selectively flush based on memory so the mem
- * arg is ignored.
- */
-
-static void sgi_tioca_tlbflush(struct agp_memory *mem)
-{
-	tioca_tlbflush(mem->bridge->dev_private_data);
-}
-
-/*
- * Given an address of a host physical page, turn it into a valid gart
- * entry.
- */
-static unsigned long
-sgi_tioca_mask_memory(struct agp_bridge_data *bridge, dma_addr_t addr,
-		      int type)
-{
-	return tioca_physpage_to_gart(addr);
-}
-
-static void sgi_tioca_agp_enable(struct agp_bridge_data *bridge, u32 mode)
-{
-	tioca_fastwrite_enable(bridge->dev_private_data);
-}
-
-/*
- * sgi_tioca_configure() doesn't have anything to do since the base CA driver
- * has alreay set up the GART.
- */
-
-static int sgi_tioca_configure(void)
-{
-	return 0;
-}
-
-/*
- * Determine gfx aperature size.  This has already been determined by the
- * CA driver init, so just need to set agp_bridge values accordingly.
- */
-
-static int sgi_tioca_fetch_size(void)
-{
-	struct tioca_kernel *info =
-	    (struct tioca_kernel *)agp_bridge->dev_private_data;
-
-	sgi_tioca_sizes[0].size = info->ca_gfxap_size / MB(1);
-	sgi_tioca_sizes[0].num_entries = info->ca_gfxgart_entries;
-
-	return sgi_tioca_sizes[0].size;
-}
-
-static int sgi_tioca_create_gatt_table(struct agp_bridge_data *bridge)
-{
-	struct tioca_kernel *info =
-	    (struct tioca_kernel *)bridge->dev_private_data;
-
-	bridge->gatt_table_real = (u32 *) info->ca_gfxgart;
-	bridge->gatt_table = bridge->gatt_table_real;
-	bridge->gatt_bus_addr = info->ca_gfxgart_base;
-
-	return 0;
-}
-
-static int sgi_tioca_free_gatt_table(struct agp_bridge_data *bridge)
-{
-	return 0;
-}
-
-static int sgi_tioca_insert_memory(struct agp_memory *mem, off_t pg_start,
-				   int type)
-{
-	int num_entries;
-	size_t i;
-	off_t j;
-	void *temp;
-	struct agp_bridge_data *bridge;
-	u64 *table;
-
-	bridge = mem->bridge;
-	if (!bridge)
-		return -EINVAL;
-
-	table = (u64 *)bridge->gatt_table;
-
-	temp = bridge->current_size;
-
-	switch (bridge->driver->size_type) {
-	case U8_APER_SIZE:
-		num_entries = A_SIZE_8(temp)->num_entries;
-		break;
-	case U16_APER_SIZE:
-		num_entries = A_SIZE_16(temp)->num_entries;
-		break;
-	case U32_APER_SIZE:
-		num_entries = A_SIZE_32(temp)->num_entries;
-		break;
-	case FIXED_APER_SIZE:
-		num_entries = A_SIZE_FIX(temp)->num_entries;
-		break;
-	case LVL2_APER_SIZE:
-		return -EINVAL;
-	default:
-		num_entries = 0;
-		break;
-	}
-
-	num_entries -= agp_memory_reserved / PAGE_SIZE;
-	if (num_entries < 0)
-		num_entries = 0;
-
-	if (type != 0 || mem->type != 0) {
-		return -EINVAL;
-	}
-
-	if ((pg_start + mem->page_count) > num_entries)
-		return -EINVAL;
-
-	j = pg_start;
-
-	while (j < (pg_start + mem->page_count)) {
-		if (table[j])
-			return -EBUSY;
-		j++;
-	}
-
-	if (!mem->is_flushed) {
-		bridge->driver->cache_flush();
-		mem->is_flushed = true;
-	}
-
-	for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
-		table[j] =
-		    bridge->driver->mask_memory(bridge,
-						page_to_phys(mem->pages[i]),
-						mem->type);
-	}
-
-	bridge->driver->tlb_flush(mem);
-	return 0;
-}
-
-static int sgi_tioca_remove_memory(struct agp_memory *mem, off_t pg_start,
-				   int type)
-{
-	size_t i;
-	struct agp_bridge_data *bridge;
-	u64 *table;
-
-	bridge = mem->bridge;
-	if (!bridge)
-		return -EINVAL;
-
-	if (type != 0 || mem->type != 0) {
-		return -EINVAL;
-	}
-
-	table = (u64 *)bridge->gatt_table;
-
-	for (i = pg_start; i < (mem->page_count + pg_start); i++) {
-		table[i] = 0;
-	}
-
-	bridge->driver->tlb_flush(mem);
-	return 0;
-}
-
-static void sgi_tioca_cache_flush(void)
-{
-}
-
-/*
- * Cleanup.  Nothing to do as the CA driver owns the GART.
- */
-
-static void sgi_tioca_cleanup(void)
-{
-}
-
-static struct agp_bridge_data *sgi_tioca_find_bridge(struct pci_dev *pdev)
-{
-	struct agp_bridge_data *bridge;
-
-	list_for_each_entry(bridge, &agp_bridges, list) {
-		if (bridge->dev->bus == pdev->bus)
-			break;
-	}
-	return bridge;
-}
-
-const struct agp_bridge_driver sgi_tioca_driver = {
-	.owner = THIS_MODULE,
-	.size_type = U16_APER_SIZE,
-	.configure = sgi_tioca_configure,
-	.fetch_size = sgi_tioca_fetch_size,
-	.cleanup = sgi_tioca_cleanup,
-	.tlb_flush = sgi_tioca_tlbflush,
-	.mask_memory = sgi_tioca_mask_memory,
-	.agp_enable = sgi_tioca_agp_enable,
-	.cache_flush = sgi_tioca_cache_flush,
-	.create_gatt_table = sgi_tioca_create_gatt_table,
-	.free_gatt_table = sgi_tioca_free_gatt_table,
-	.insert_memory = sgi_tioca_insert_memory,
-	.remove_memory = sgi_tioca_remove_memory,
-	.alloc_by_type = agp_generic_alloc_by_type,
-	.free_by_type = agp_generic_free_by_type,
-	.agp_alloc_page = sgi_tioca_alloc_page,
-	.agp_destroy_page = agp_generic_destroy_page,
-	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
-	.cant_use_aperture = true,
-	.needs_scratch_page = false,
-	.num_aperture_sizes = 1,
-};
-
-static int agp_sgi_init(void)
-{
-	unsigned int j;
-	struct tioca_kernel *info;
-	struct pci_dev *pdev = NULL;
-
-	if (tioca_gart_found)
-		printk(KERN_INFO PFX "SGI TIO CA GART driver initialized.\n");
-	else
-		return 0;
-
-	sgi_tioca_agp_bridges = kmalloc_array(tioca_gart_found,
-					      sizeof(struct agp_bridge_data *),
-					      GFP_KERNEL);
-	if (!sgi_tioca_agp_bridges)
-		return -ENOMEM;
-
-	j = 0;
-	list_for_each_entry(info, &tioca_list, ca_list) {
-		if (list_empty(info->ca_devices))
-			continue;
-		list_for_each_entry(pdev, info->ca_devices, bus_list) {
-			u8 cap_ptr;
-
-			if (pdev->class != (PCI_CLASS_DISPLAY_VGA << 8))
-				continue;
-			cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
-			if (!cap_ptr)
-				continue;
-		}
-		sgi_tioca_agp_bridges[j] = agp_alloc_bridge();
-		printk(KERN_INFO PFX "bridge %d = 0x%p\n", j,
-		       sgi_tioca_agp_bridges[j]);
-		if (sgi_tioca_agp_bridges[j]) {
-			sgi_tioca_agp_bridges[j]->dev = pdev;
-			sgi_tioca_agp_bridges[j]->dev_private_data = info;
-			sgi_tioca_agp_bridges[j]->driver = &sgi_tioca_driver;
-			sgi_tioca_agp_bridges[j]->gart_bus_addr =
-			    info->ca_gfxap_base;
-			sgi_tioca_agp_bridges[j]->mode = (0x7D << 24) |	/* 126 requests */
-			    (0x1 << 9) |	/* SBA supported */
-			    (0x1 << 5) |	/* 64-bit addresses supported */
-			    (0x1 << 4) |	/* FW supported */
-			    (0x1 << 3) |	/* AGP 3.0 mode */
-			    0x2;	/* 8x transfer only */
-			sgi_tioca_agp_bridges[j]->current_size =
-			    sgi_tioca_agp_bridges[j]->previous_size =
-			    (void *)&sgi_tioca_sizes[0];
-			agp_add_bridge(sgi_tioca_agp_bridges[j]);
-		}
-		j++;
-	}
-
-	agp_find_bridge = &sgi_tioca_find_bridge;
-	return 0;
-}
-
-static void agp_sgi_cleanup(void)
-{
-	kfree(sgi_tioca_agp_bridges);
-	sgi_tioca_agp_bridges = NULL;
-}
-
-module_init(agp_sgi_init);
-module_exit(agp_sgi_cleanup);
-
-MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
deleted file mode 100644
index 0a31b60bee7b..000000000000
--- a/drivers/char/mbcs.c
+++ /dev/null
@@ -1,831 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc.  All rights reserved.
- */
-
-/*
- *	MOATB Core Services driver.
- */
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/mm.h>
-#include <linux/uio.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <asm/io.h>
-#include <linux/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/intr.h>
-#include <asm/sn/tiocx.h>
-#include "mbcs.h"
-
-#define MBCS_DEBUG 0
-#if MBCS_DEBUG
-#define DBG(fmt...)    printk(KERN_ALERT fmt)
-#else
-#define DBG(fmt...)
-#endif
-static DEFINE_MUTEX(mbcs_mutex);
-static int mbcs_major;
-
-static LIST_HEAD(soft_list);
-
-/*
- * file operations
- */
-static const struct file_operations mbcs_ops = {
-	.owner = THIS_MODULE,
-	.open = mbcs_open,
-	.llseek = mbcs_sram_llseek,
-	.read = mbcs_sram_read,
-	.write = mbcs_sram_write,
-	.mmap = mbcs_gscr_mmap,
-};
-
-struct mbcs_callback_arg {
-	int minor;
-	struct cx_dev *cx_dev;
-};
-
-static inline void mbcs_getdma_init(struct getdma *gdma)
-{
-	memset(gdma, 0, sizeof(struct getdma));
-	gdma->DoneIntEnable = 1;
-}
-
-static inline void mbcs_putdma_init(struct putdma *pdma)
-{
-	memset(pdma, 0, sizeof(struct putdma));
-	pdma->DoneIntEnable = 1;
-}
-
-static inline void mbcs_algo_init(struct algoblock *algo_soft)
-{
-	memset(algo_soft, 0, sizeof(struct algoblock));
-}
-
-static inline void mbcs_getdma_set(void *mmr,
-		       uint64_t hostAddr,
-		       uint64_t localAddr,
-		       uint64_t localRamSel,
-		       uint64_t numPkts,
-		       uint64_t amoEnable,
-		       uint64_t intrEnable,
-		       uint64_t peerIO,
-		       uint64_t amoHostDest,
-		       uint64_t amoModType, uint64_t intrHostDest,
-		       uint64_t intrVector)
-{
-	union dma_control rdma_control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union dma_localaddr local_addr;
-	union dma_hostaddr host_addr;
-
-	rdma_control.dma_control_reg = 0;
-	amo_dest.dma_amo_dest_reg = 0;
-	intr_dest.intr_dest_reg = 0;
-	local_addr.dma_localaddr_reg = 0;
-	host_addr.dma_hostaddr_reg = 0;
-
-	host_addr.dma_sys_addr = hostAddr;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
-
-	local_addr.dma_ram_addr = localAddr;
-	local_addr.dma_ram_sel = localRamSel;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
-
-	rdma_control.dma_op_length = numPkts;
-	rdma_control.done_amo_en = amoEnable;
-	rdma_control.done_int_en = intrEnable;
-	rdma_control.pio_mem_n = peerIO;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_CTRL, rdma_control.dma_control_reg);
-
-	amo_dest.dma_amo_sys_addr = amoHostDest;
-	amo_dest.dma_amo_mod_type = amoModType;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
-	intr_dest.address = intrHostDest;
-	intr_dest.int_vector = intrVector;
-	MBCS_MMR_SET(mmr, MBCS_RD_DMA_INT_DEST, intr_dest.intr_dest_reg);
-
-}
-
-static inline void mbcs_putdma_set(void *mmr,
-		       uint64_t hostAddr,
-		       uint64_t localAddr,
-		       uint64_t localRamSel,
-		       uint64_t numPkts,
-		       uint64_t amoEnable,
-		       uint64_t intrEnable,
-		       uint64_t peerIO,
-		       uint64_t amoHostDest,
-		       uint64_t amoModType,
-		       uint64_t intrHostDest, uint64_t intrVector)
-{
-	union dma_control wdma_control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union dma_localaddr local_addr;
-	union dma_hostaddr host_addr;
-
-	wdma_control.dma_control_reg = 0;
-	amo_dest.dma_amo_dest_reg = 0;
-	intr_dest.intr_dest_reg = 0;
-	local_addr.dma_localaddr_reg = 0;
-	host_addr.dma_hostaddr_reg = 0;
-
-	host_addr.dma_sys_addr = hostAddr;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
-
-	local_addr.dma_ram_addr = localAddr;
-	local_addr.dma_ram_sel = localRamSel;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
-
-	wdma_control.dma_op_length = numPkts;
-	wdma_control.done_amo_en = amoEnable;
-	wdma_control.done_int_en = intrEnable;
-	wdma_control.pio_mem_n = peerIO;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_CTRL, wdma_control.dma_control_reg);
-
-	amo_dest.dma_amo_sys_addr = amoHostDest;
-	amo_dest.dma_amo_mod_type = amoModType;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
-	intr_dest.address = intrHostDest;
-	intr_dest.int_vector = intrVector;
-	MBCS_MMR_SET(mmr, MBCS_WR_DMA_INT_DEST, intr_dest.intr_dest_reg);
-
-}
-
-static inline void mbcs_algo_set(void *mmr,
-		     uint64_t amoHostDest,
-		     uint64_t amoModType,
-		     uint64_t intrHostDest,
-		     uint64_t intrVector, uint64_t algoStepCount)
-{
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union algo_step step;
-
-	step.algo_step_reg = 0;
-	intr_dest.intr_dest_reg = 0;
-	amo_dest.dma_amo_dest_reg = 0;
-
-	amo_dest.dma_amo_sys_addr = amoHostDest;
-	amo_dest.dma_amo_mod_type = amoModType;
-	MBCS_MMR_SET(mmr, MBCS_ALG_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
-	intr_dest.address = intrHostDest;
-	intr_dest.int_vector = intrVector;
-	MBCS_MMR_SET(mmr, MBCS_ALG_INT_DEST, intr_dest.intr_dest_reg);
-
-	step.alg_step_cnt = algoStepCount;
-	MBCS_MMR_SET(mmr, MBCS_ALG_STEP, step.algo_step_reg);
-}
-
-static inline int mbcs_getdma_start(struct mbcs_soft *soft)
-{
-	void *mmr_base;
-	struct getdma *gdma;
-	uint64_t numPkts;
-	union cm_control cm_control;
-
-	mmr_base = soft->mmr_base;
-	gdma = &soft->getdma;
-
-	/* check that host address got setup */
-	if (!gdma->hostAddr)
-		return -1;
-
-	numPkts =
-	    (gdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
-
-	/* program engine */
-	mbcs_getdma_set(mmr_base, tiocx_dma_addr(gdma->hostAddr),
-		   gdma->localAddr,
-		   (gdma->localAddr < MB2) ? 0 :
-		   (gdma->localAddr < MB4) ? 1 :
-		   (gdma->localAddr < MB6) ? 2 : 3,
-		   numPkts,
-		   gdma->DoneAmoEnable,
-		   gdma->DoneIntEnable,
-		   gdma->peerIO,
-		   gdma->amoHostDest,
-		   gdma->amoModType,
-		   gdma->intrHostDest, gdma->intrVector);
-
-	/* start engine */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.rd_dma_go = 1;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	return 0;
-
-}
-
-static inline int mbcs_putdma_start(struct mbcs_soft *soft)
-{
-	void *mmr_base;
-	struct putdma *pdma;
-	uint64_t numPkts;
-	union cm_control cm_control;
-
-	mmr_base = soft->mmr_base;
-	pdma = &soft->putdma;
-
-	/* check that host address got setup */
-	if (!pdma->hostAddr)
-		return -1;
-
-	numPkts =
-	    (pdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
-
-	/* program engine */
-	mbcs_putdma_set(mmr_base, tiocx_dma_addr(pdma->hostAddr),
-		   pdma->localAddr,
-		   (pdma->localAddr < MB2) ? 0 :
-		   (pdma->localAddr < MB4) ? 1 :
-		   (pdma->localAddr < MB6) ? 2 : 3,
-		   numPkts,
-		   pdma->DoneAmoEnable,
-		   pdma->DoneIntEnable,
-		   pdma->peerIO,
-		   pdma->amoHostDest,
-		   pdma->amoModType,
-		   pdma->intrHostDest, pdma->intrVector);
-
-	/* start engine */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.wr_dma_go = 1;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	return 0;
-
-}
-
-static inline int mbcs_algo_start(struct mbcs_soft *soft)
-{
-	struct algoblock *algo_soft = &soft->algo;
-	void *mmr_base = soft->mmr_base;
-	union cm_control cm_control;
-
-	if (mutex_lock_interruptible(&soft->algolock))
-		return -ERESTARTSYS;
-
-	atomic_set(&soft->algo_done, 0);
-
-	mbcs_algo_set(mmr_base,
-		 algo_soft->amoHostDest,
-		 algo_soft->amoModType,
-		 algo_soft->intrHostDest,
-		 algo_soft->intrVector, algo_soft->algoStepCount);
-
-	/* start algorithm */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.alg_done_int_en = 1;
-	cm_control.alg_go = 1;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	mutex_unlock(&soft->algolock);
-
-	return 0;
-}
-
-static inline ssize_t
-do_mbcs_sram_dmawrite(struct mbcs_soft *soft, uint64_t hostAddr,
-		      size_t len, loff_t * off)
-{
-	int rv = 0;
-
-	if (mutex_lock_interruptible(&soft->dmawritelock))
-		return -ERESTARTSYS;
-
-	atomic_set(&soft->dmawrite_done, 0);
-
-	soft->putdma.hostAddr = hostAddr;
-	soft->putdma.localAddr = *off;
-	soft->putdma.bytes = len;
-
-	if (mbcs_putdma_start(soft) < 0) {
-		DBG(KERN_ALERT "do_mbcs_sram_dmawrite: "
-					"mbcs_putdma_start failed\n");
-		rv = -EAGAIN;
-		goto dmawrite_exit;
-	}
-
-	if (wait_event_interruptible(soft->dmawrite_queue,
-					atomic_read(&soft->dmawrite_done))) {
-		rv = -ERESTARTSYS;
-		goto dmawrite_exit;
-	}
-
-	rv = len;
-	*off += len;
-
-dmawrite_exit:
-	mutex_unlock(&soft->dmawritelock);
-
-	return rv;
-}
-
-static inline ssize_t
-do_mbcs_sram_dmaread(struct mbcs_soft *soft, uint64_t hostAddr,
-		     size_t len, loff_t * off)
-{
-	int rv = 0;
-
-	if (mutex_lock_interruptible(&soft->dmareadlock))
-		return -ERESTARTSYS;
-
-	atomic_set(&soft->dmawrite_done, 0);
-
-	soft->getdma.hostAddr = hostAddr;
-	soft->getdma.localAddr = *off;
-	soft->getdma.bytes = len;
-
-	if (mbcs_getdma_start(soft) < 0) {
-		DBG(KERN_ALERT "mbcs_strategy: mbcs_getdma_start failed\n");
-		rv = -EAGAIN;
-		goto dmaread_exit;
-	}
-
-	if (wait_event_interruptible(soft->dmaread_queue,
-					atomic_read(&soft->dmaread_done))) {
-		rv = -ERESTARTSYS;
-		goto dmaread_exit;
-	}
-
-	rv = len;
-	*off += len;
-
-dmaread_exit:
-	mutex_unlock(&soft->dmareadlock);
-
-	return rv;
-}
-
-static int mbcs_open(struct inode *ip, struct file *fp)
-{
-	struct mbcs_soft *soft;
-	int minor;
-
-	mutex_lock(&mbcs_mutex);
-	minor = iminor(ip);
-
-	/* Nothing protects access to this list... */
-	list_for_each_entry(soft, &soft_list, list) {
-		if (soft->nasid == minor) {
-			fp->private_data = soft->cxdev;
-			mutex_unlock(&mbcs_mutex);
-			return 0;
-		}
-	}
-
-	mutex_unlock(&mbcs_mutex);
-	return -ENODEV;
-}
-
-static ssize_t mbcs_sram_read(struct file * fp, char __user *buf, size_t len, loff_t * off)
-{
-	struct cx_dev *cx_dev = fp->private_data;
-	struct mbcs_soft *soft = cx_dev->soft;
-	uint64_t hostAddr;
-	int rv = 0;
-
-	hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
-	if (hostAddr == 0)
-		return -ENOMEM;
-
-	rv = do_mbcs_sram_dmawrite(soft, hostAddr, len, off);
-	if (rv < 0)
-		goto exit;
-
-	if (copy_to_user(buf, (void *)hostAddr, len))
-		rv = -EFAULT;
-
-      exit:
-	free_pages(hostAddr, get_order(len));
-
-	return rv;
-}
-
-static ssize_t
-mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * off)
-{
-	struct cx_dev *cx_dev = fp->private_data;
-	struct mbcs_soft *soft = cx_dev->soft;
-	uint64_t hostAddr;
-	int rv = 0;
-
-	hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
-	if (hostAddr == 0)
-		return -ENOMEM;
-
-	if (copy_from_user((void *)hostAddr, buf, len)) {
-		rv = -EFAULT;
-		goto exit;
-	}
-
-	rv = do_mbcs_sram_dmaread(soft, hostAddr, len, off);
-
-      exit:
-	free_pages(hostAddr, get_order(len));
-
-	return rv;
-}
-
-static loff_t mbcs_sram_llseek(struct file * filp, loff_t off, int whence)
-{
-	return generic_file_llseek_size(filp, off, whence, MAX_LFS_FILESIZE,
-					MBCS_SRAM_SIZE);
-}
-
-static uint64_t mbcs_pioaddr(struct mbcs_soft *soft, uint64_t offset)
-{
-	uint64_t mmr_base;
-
-	mmr_base = (uint64_t) (soft->mmr_base + offset);
-
-	return mmr_base;
-}
-
-static void mbcs_debug_pioaddr_set(struct mbcs_soft *soft)
-{
-	soft->debug_addr = mbcs_pioaddr(soft, MBCS_DEBUG_START);
-}
-
-static void mbcs_gscr_pioaddr_set(struct mbcs_soft *soft)
-{
-	soft->gscr_addr = mbcs_pioaddr(soft, MBCS_GSCR_START);
-}
-
-static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma)
-{
-	struct cx_dev *cx_dev = fp->private_data;
-	struct mbcs_soft *soft = cx_dev->soft;
-
-	if (vma->vm_pgoff != 0)
-		return -EINVAL;
-
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
-	/* Remap-pfn-range will mark the range VM_IO */
-	if (remap_pfn_range(vma,
-			    vma->vm_start,
-			    __pa(soft->gscr_addr) >> PAGE_SHIFT,
-			    PAGE_SIZE,
-			    vma->vm_page_prot))
-		return -EAGAIN;
-
-	return 0;
-}
-
-/**
- * mbcs_completion_intr_handler - Primary completion handler.
- * @irq: irq
- * @arg: soft struct for device
- *
- */
-static irqreturn_t
-mbcs_completion_intr_handler(int irq, void *arg)
-{
-	struct mbcs_soft *soft = (struct mbcs_soft *)arg;
-	void *mmr_base;
-	union cm_status cm_status;
-	union cm_control cm_control;
-
-	mmr_base = soft->mmr_base;
-	cm_status.cm_status_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_STATUS);
-
-	if (cm_status.rd_dma_done) {
-		/* stop dma-read engine, clear status */
-		cm_control.cm_control_reg =
-		    MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-		cm_control.rd_dma_clr = 1;
-		MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
-			     cm_control.cm_control_reg);
-		atomic_set(&soft->dmaread_done, 1);
-		wake_up(&soft->dmaread_queue);
-	}
-	if (cm_status.wr_dma_done) {
-		/* stop dma-write engine, clear status */
-		cm_control.cm_control_reg =
-		    MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-		cm_control.wr_dma_clr = 1;
-		MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
-			     cm_control.cm_control_reg);
-		atomic_set(&soft->dmawrite_done, 1);
-		wake_up(&soft->dmawrite_queue);
-	}
-	if (cm_status.alg_done) {
-		/* clear status */
-		cm_control.cm_control_reg =
-		    MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-		cm_control.alg_done_clr = 1;
-		MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
-			     cm_control.cm_control_reg);
-		atomic_set(&soft->algo_done, 1);
-		wake_up(&soft->algo_queue);
-	}
-
-	return IRQ_HANDLED;
-}
-
-/**
- * mbcs_intr_alloc - Allocate interrupts.
- * @dev: device pointer
- *
- */
-static int mbcs_intr_alloc(struct cx_dev *dev)
-{
-	struct sn_irq_info *sn_irq;
-	struct mbcs_soft *soft;
-	struct getdma *getdma;
-	struct putdma *putdma;
-	struct algoblock *algo;
-
-	soft = dev->soft;
-	getdma = &soft->getdma;
-	putdma = &soft->putdma;
-	algo = &soft->algo;
-
-	soft->get_sn_irq = NULL;
-	soft->put_sn_irq = NULL;
-	soft->algo_sn_irq = NULL;
-
-	sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
-	if (sn_irq == NULL)
-		return -EAGAIN;
-	soft->get_sn_irq = sn_irq;
-	getdma->intrHostDest = sn_irq->irq_xtalkaddr;
-	getdma->intrVector = sn_irq->irq_irq;
-	if (request_irq(sn_irq->irq_irq,
-			(void *)mbcs_completion_intr_handler, IRQF_SHARED,
-			"MBCS get intr", (void *)soft)) {
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-
-	sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
-	if (sn_irq == NULL) {
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-	soft->put_sn_irq = sn_irq;
-	putdma->intrHostDest = sn_irq->irq_xtalkaddr;
-	putdma->intrVector = sn_irq->irq_irq;
-	if (request_irq(sn_irq->irq_irq,
-			(void *)mbcs_completion_intr_handler, IRQF_SHARED,
-			"MBCS put intr", (void *)soft)) {
-		tiocx_irq_free(soft->put_sn_irq);
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-
-	sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
-	if (sn_irq == NULL) {
-		free_irq(soft->put_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->put_sn_irq);
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-	soft->algo_sn_irq = sn_irq;
-	algo->intrHostDest = sn_irq->irq_xtalkaddr;
-	algo->intrVector = sn_irq->irq_irq;
-	if (request_irq(sn_irq->irq_irq,
-			(void *)mbcs_completion_intr_handler, IRQF_SHARED,
-			"MBCS algo intr", (void *)soft)) {
-		tiocx_irq_free(soft->algo_sn_irq);
-		free_irq(soft->put_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->put_sn_irq);
-		free_irq(soft->get_sn_irq->irq_irq, soft);
-		tiocx_irq_free(soft->get_sn_irq);
-		return -EAGAIN;
-	}
-
-	return 0;
-}
-
-/**
- * mbcs_intr_dealloc - Remove interrupts.
- * @dev: device pointer
- *
- */
-static void mbcs_intr_dealloc(struct cx_dev *dev)
-{
-	struct mbcs_soft *soft;
-
-	soft = dev->soft;
-
-	free_irq(soft->get_sn_irq->irq_irq, soft);
-	tiocx_irq_free(soft->get_sn_irq);
-	free_irq(soft->put_sn_irq->irq_irq, soft);
-	tiocx_irq_free(soft->put_sn_irq);
-	free_irq(soft->algo_sn_irq->irq_irq, soft);
-	tiocx_irq_free(soft->algo_sn_irq);
-}
-
-static inline int mbcs_hw_init(struct mbcs_soft *soft)
-{
-	void *mmr_base = soft->mmr_base;
-	union cm_control cm_control;
-	union cm_req_timeout cm_req_timeout;
-	uint64_t err_stat;
-
-	cm_req_timeout.cm_req_timeout_reg =
-	    MBCS_MMR_GET(mmr_base, MBCS_CM_REQ_TOUT);
-
-	cm_req_timeout.time_out = MBCS_CM_CONTROL_REQ_TOUT_MASK;
-	MBCS_MMR_SET(mmr_base, MBCS_CM_REQ_TOUT,
-		     cm_req_timeout.cm_req_timeout_reg);
-
-	mbcs_gscr_pioaddr_set(soft);
-	mbcs_debug_pioaddr_set(soft);
-
-	/* clear errors */
-	err_stat = MBCS_MMR_GET(mmr_base, MBCS_CM_ERR_STAT);
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CLR_ERR_STAT, err_stat);
-	MBCS_MMR_ZERO(mmr_base, MBCS_CM_ERROR_DETAIL1);
-
-	/* enable interrupts */
-	/* turn off 2^23 (INT_EN_PIO_REQ_ADDR_INV) */
-	MBCS_MMR_SET(mmr_base, MBCS_CM_ERR_INT_EN, 0x3ffffff7e00ffUL);
-
-	/* arm status regs and clear engines */
-	cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
-	cm_control.rearm_stat_regs = 1;
-	cm_control.alg_clr = 1;
-	cm_control.wr_dma_clr = 1;
-	cm_control.rd_dma_clr = 1;
-
-	MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
-	return 0;
-}
-
-static ssize_t show_algo(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	struct mbcs_soft *soft = cx_dev->soft;
-	uint64_t debug0;
-
-	/*
-	 * By convention, the first debug register contains the
-	 * algorithm number and revision.
-	 */
-	debug0 = *(uint64_t *) soft->debug_addr;
-
-	return sprintf(buf, "0x%x 0x%x\n",
-		       upper_32_bits(debug0), lower_32_bits(debug0));
-}
-
-static ssize_t store_algo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
-{
-	int n;
-	struct cx_dev *cx_dev = to_cx_dev(dev);
-	struct mbcs_soft *soft = cx_dev->soft;
-
-	if (count <= 0)
-		return 0;
-
-	n = simple_strtoul(buf, NULL, 0);
-
-	if (n == 1) {
-		mbcs_algo_start(soft);
-		if (wait_event_interruptible(soft->algo_queue,
-					atomic_read(&soft->algo_done)))
-			return -ERESTARTSYS;
-	}
-
-	return count;
-}
-
-DEVICE_ATTR(algo, 0644, show_algo, store_algo);
-
-/**
- * mbcs_probe - Initialize for device
- * @dev: device pointer
- * @device_id: id table pointer
- *
- */
-static int mbcs_probe(struct cx_dev *dev, const struct cx_device_id *id)
-{
-	struct mbcs_soft *soft;
-
-	dev->soft = NULL;
-
-	soft = kzalloc(sizeof(struct mbcs_soft), GFP_KERNEL);
-	if (soft == NULL)
-		return -ENOMEM;
-
-	soft->nasid = dev->cx_id.nasid;
-	list_add(&soft->list, &soft_list);
-	soft->mmr_base = (void *)tiocx_swin_base(dev->cx_id.nasid);
-	dev->soft = soft;
-	soft->cxdev = dev;
-
-	init_waitqueue_head(&soft->dmawrite_queue);
-	init_waitqueue_head(&soft->dmaread_queue);
-	init_waitqueue_head(&soft->algo_queue);
-
-	mutex_init(&soft->dmawritelock);
-	mutex_init(&soft->dmareadlock);
-	mutex_init(&soft->algolock);
-
-	mbcs_getdma_init(&soft->getdma);
-	mbcs_putdma_init(&soft->putdma);
-	mbcs_algo_init(&soft->algo);
-
-	mbcs_hw_init(soft);
-
-	/* Allocate interrupts */
-	mbcs_intr_alloc(dev);
-
-	device_create_file(&dev->dev, &dev_attr_algo);
-
-	return 0;
-}
-
-static int mbcs_remove(struct cx_dev *dev)
-{
-	if (dev->soft) {
-		mbcs_intr_dealloc(dev);
-		kfree(dev->soft);
-	}
-
-	device_remove_file(&dev->dev, &dev_attr_algo);
-
-	return 0;
-}
-
-static const struct cx_device_id mbcs_id_table[] = {
-	{
-	 .part_num = MBCS_PART_NUM,
-	 .mfg_num = MBCS_MFG_NUM,
-	 },
-	{
-	 .part_num = MBCS_PART_NUM_ALG0,
-	 .mfg_num = MBCS_MFG_NUM,
-	 },
-	{0, 0}
-};
-
-MODULE_DEVICE_TABLE(cx, mbcs_id_table);
-
-static struct cx_drv mbcs_driver = {
-	.name = DEVICE_NAME,
-	.id_table = mbcs_id_table,
-	.probe = mbcs_probe,
-	.remove = mbcs_remove,
-};
-
-static void __exit mbcs_exit(void)
-{
-	unregister_chrdev(mbcs_major, DEVICE_NAME);
-	cx_driver_unregister(&mbcs_driver);
-}
-
-static int __init mbcs_init(void)
-{
-	int rv;
-
-	if (!ia64_platform_is("sn2"))
-		return -ENODEV;
-
-	// Put driver into chrdevs[].  Get major number.
-	rv = register_chrdev(mbcs_major, DEVICE_NAME, &mbcs_ops);
-	if (rv < 0) {
-		DBG(KERN_ALERT "mbcs_init: can't get major number. %d\n", rv);
-		return rv;
-	}
-	mbcs_major = rv;
-
-	return cx_driver_register(&mbcs_driver);
-}
-
-module_init(mbcs_init);
-module_exit(mbcs_exit);
-
-MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>");
-MODULE_DESCRIPTION("Driver for MOATB Core Services");
-MODULE_LICENSE("GPL");
diff --git a/drivers/char/mbcs.h b/drivers/char/mbcs.h
deleted file mode 100644
index 1a36884c48b5..000000000000
--- a/drivers/char/mbcs.h
+++ /dev/null
@@ -1,553 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc.  All rights reserved.
- */
-
-#ifndef __MBCS_H__
-#define __MBCS_H__
-
-/*
- * General macros
- */
-#define MB	(1024*1024)
-#define MB2	(2*MB)
-#define MB4	(4*MB)
-#define MB6	(6*MB)
-
-/*
- * Offsets and masks
- */
-#define MBCS_CM_ID		0x0000	/* Identification */
-#define MBCS_CM_STATUS		0x0008	/* Status */
-#define MBCS_CM_ERROR_DETAIL1	0x0010	/* Error Detail1 */
-#define MBCS_CM_ERROR_DETAIL2	0x0018	/* Error Detail2 */
-#define MBCS_CM_CONTROL		0x0020	/* Control */
-#define MBCS_CM_REQ_TOUT	0x0028	/* Request Time-out */
-#define MBCS_CM_ERR_INT_DEST	0x0038	/* Error Interrupt Destination */
-#define MBCS_CM_TARG_FL		0x0050	/* Target Flush */
-#define MBCS_CM_ERR_STAT	0x0060	/* Error Status */
-#define MBCS_CM_CLR_ERR_STAT	0x0068	/* Clear Error Status */
-#define MBCS_CM_ERR_INT_EN	0x0070	/* Error Interrupt Enable */
-#define MBCS_RD_DMA_SYS_ADDR	0x0100	/* Read DMA System Address */
-#define MBCS_RD_DMA_LOC_ADDR	0x0108	/* Read DMA Local Address */
-#define MBCS_RD_DMA_CTRL	0x0110	/* Read DMA Control */
-#define MBCS_RD_DMA_AMO_DEST	0x0118	/* Read DMA AMO Destination */
-#define MBCS_RD_DMA_INT_DEST	0x0120	/* Read DMA Interrupt Destination */
-#define MBCS_RD_DMA_AUX_STAT	0x0130	/* Read DMA Auxiliary Status */
-#define MBCS_WR_DMA_SYS_ADDR	0x0200	/* Write DMA System Address */
-#define MBCS_WR_DMA_LOC_ADDR	0x0208	/* Write DMA Local Address */
-#define MBCS_WR_DMA_CTRL	0x0210	/* Write DMA Control */
-#define MBCS_WR_DMA_AMO_DEST	0x0218	/* Write DMA AMO Destination */
-#define MBCS_WR_DMA_INT_DEST	0x0220	/* Write DMA Interrupt Destination */
-#define MBCS_WR_DMA_AUX_STAT	0x0230	/* Write DMA Auxiliary Status */
-#define MBCS_ALG_AMO_DEST	0x0300	/* Algorithm AMO Destination */
-#define MBCS_ALG_INT_DEST	0x0308	/* Algorithm Interrupt Destination */
-#define MBCS_ALG_OFFSETS	0x0310
-#define MBCS_ALG_STEP		0x0318	/* Algorithm Step */
-
-#define MBCS_GSCR_START		0x0000000
-#define MBCS_DEBUG_START	0x0100000
-#define MBCS_RAM0_START		0x0200000
-#define MBCS_RAM1_START		0x0400000
-#define MBCS_RAM2_START		0x0600000
-
-#define MBCS_CM_CONTROL_REQ_TOUT_MASK 0x0000000000ffffffUL
-//#define PIO_BASE_ADDR_BASE_OFFSET_MASK 0x00fffffffff00000UL
-
-#define MBCS_SRAM_SIZE		(1024*1024)
-#define MBCS_CACHELINE_SIZE	128
-
-/*
- * MMR get's and put's
- */
-#define MBCS_MMR_ADDR(mmr_base, offset)((uint64_t *)(mmr_base + offset))
-#define MBCS_MMR_SET(mmr_base, offset, value) {			\
-	uint64_t *mbcs_mmr_set_u64p, readback;				\
-	mbcs_mmr_set_u64p = (uint64_t *)(mmr_base + offset);	\
-	*mbcs_mmr_set_u64p = value;					\
-	readback = *mbcs_mmr_set_u64p; \
-}
-#define MBCS_MMR_GET(mmr_base, offset) *(uint64_t *)(mmr_base + offset)
-#define MBCS_MMR_ZERO(mmr_base, offset) MBCS_MMR_SET(mmr_base, offset, 0)
-
-/*
- * MBCS mmr structures
- */
-union cm_id {
-	uint64_t cm_id_reg;
-	struct {
-		uint64_t always_one:1,	// 0
-		 mfg_id:11,	// 11:1
-		 part_num:16,	// 27:12
-		 bitstream_rev:8,	// 35:28
-		:28;		// 63:36
-	};
-};
-
-union cm_status {
-	uint64_t cm_status_reg;
-	struct {
-		uint64_t pending_reads:8,	// 7:0
-		 pending_writes:8,	// 15:8
-		 ice_rsp_credits:8,	// 23:16
-		 ice_req_credits:8,	// 31:24
-		 cm_req_credits:8,	// 39:32
-		:1,		// 40
-		 rd_dma_in_progress:1,	// 41
-		 rd_dma_done:1,	// 42
-		:1,		// 43
-		 wr_dma_in_progress:1,	// 44
-		 wr_dma_done:1,	// 45
-		 alg_waiting:1,	// 46
-		 alg_pipe_running:1,	// 47
-		 alg_done:1,	// 48
-		:3,		// 51:49
-		 pending_int_reqs:8,	// 59:52
-		:3,		// 62:60
-		 alg_half_speed_sel:1;	// 63
-	};
-};
-
-union cm_error_detail1 {
-	uint64_t cm_error_detail1_reg;
-	struct {
-		uint64_t packet_type:4,	// 3:0
-		 source_id:2,	// 5:4
-		 data_size:2,	// 7:6
-		 tnum:8,	// 15:8
-		 byte_enable:8,	// 23:16
-		 gfx_cred:8,	// 31:24
-		 read_type:2,	// 33:32
-		 pio_or_memory:1,	// 34
-		 head_cw_error:1,	// 35
-		:12,		// 47:36
-		 head_error_bit:1,	// 48
-		 data_error_bit:1,	// 49
-		:13,		// 62:50
-		 valid:1;	// 63
-	};
-};
-
-union cm_error_detail2 {
-	uint64_t cm_error_detail2_reg;
-	struct {
-		uint64_t address:56,	// 55:0
-		:8;		// 63:56
-	};
-};
-
-union cm_control {
-	uint64_t cm_control_reg;
-	struct {
-		uint64_t cm_id:2,	// 1:0
-		:2,		// 3:2
-		 max_trans:5,	// 8:4
-		:3,		// 11:9
-		 address_mode:1,	// 12
-		:7,		// 19:13
-		 credit_limit:8,	// 27:20
-		:5,		// 32:28
-		 rearm_stat_regs:1,	// 33
-		 prescalar_byp:1,	// 34
-		 force_gap_war:1,	// 35
-		 rd_dma_go:1,	// 36
-		 wr_dma_go:1,	// 37
-		 alg_go:1,	// 38
-		 rd_dma_clr:1,	// 39
-		 wr_dma_clr:1,	// 40
-		 alg_clr:1,	// 41
-		:2,		// 43:42
-		 alg_wait_step:1,	// 44
-		 alg_done_amo_en:1,	// 45
-		 alg_done_int_en:1,	// 46
-		:1,		// 47
-		 alg_sram0_locked:1,	// 48
-		 alg_sram1_locked:1,	// 49
-		 alg_sram2_locked:1,	// 50
-		 alg_done_clr:1,	// 51
-		:12;		// 63:52
-	};
-};
-
-union cm_req_timeout {
-	uint64_t cm_req_timeout_reg;
-	struct {
-		uint64_t time_out:24,	// 23:0
-		:40;		// 63:24
-	};
-};
-
-union intr_dest {
-	uint64_t intr_dest_reg;
-	struct {
-		uint64_t address:56,	// 55:0
-		 int_vector:8;	// 63:56
-	};
-};
-
-union cm_error_status {
-	uint64_t cm_error_status_reg;
-	struct {
-		uint64_t ecc_sbe:1,	// 0
-		 ecc_mbe:1,	// 1
-		 unsupported_req:1,	// 2
-		 unexpected_rsp:1,	// 3
-		 bad_length:1,	// 4
-		 bad_datavalid:1,	// 5
-		 buffer_overflow:1,	// 6
-		 request_timeout:1,	// 7
-		:8,		// 15:8
-		 head_inv_data_size:1,	// 16
-		 rsp_pactype_inv:1,	// 17
-		 head_sb_err:1,	// 18
-		 missing_head:1,	// 19
-		 head_inv_rd_type:1,	// 20
-		 head_cmd_err_bit:1,	// 21
-		 req_addr_align_inv:1,	// 22
-		 pio_req_addr_inv:1,	// 23
-		 req_range_dsize_inv:1,	// 24
-		 early_term:1,	// 25
-		 early_tail:1,	// 26
-		 missing_tail:1,	// 27
-		 data_flit_sb_err:1,	// 28
-		 cm2hcm_req_cred_of:1,	// 29
-		 cm2hcm_rsp_cred_of:1,	// 30
-		 rx_bad_didn:1,	// 31
-		 rd_dma_err_rsp:1,	// 32
-		 rd_dma_tnum_tout:1,	// 33
-		 rd_dma_multi_tnum_tou:1,	// 34
-		 wr_dma_err_rsp:1,	// 35
-		 wr_dma_tnum_tout:1,	// 36
-		 wr_dma_multi_tnum_tou:1,	// 37
-		 alg_data_overflow:1,	// 38
-		 alg_data_underflow:1,	// 39
-		 ram0_access_conflict:1,	// 40
-		 ram1_access_conflict:1,	// 41
-		 ram2_access_conflict:1,	// 42
-		 ram0_perr:1,	// 43
-		 ram1_perr:1,	// 44
-		 ram2_perr:1,	// 45
-		 int_gen_rsp_err:1,	// 46
-		 int_gen_tnum_tout:1,	// 47
-		 rd_dma_prog_err:1,	// 48
-		 wr_dma_prog_err:1,	// 49
-		:14;		// 63:50
-	};
-};
-
-union cm_clr_error_status {
-	uint64_t cm_clr_error_status_reg;
-	struct {
-		uint64_t clr_ecc_sbe:1,	// 0
-		 clr_ecc_mbe:1,	// 1
-		 clr_unsupported_req:1,	// 2
-		 clr_unexpected_rsp:1,	// 3
-		 clr_bad_length:1,	// 4
-		 clr_bad_datavalid:1,	// 5
-		 clr_buffer_overflow:1,	// 6
-		 clr_request_timeout:1,	// 7
-		:8,		// 15:8
-		 clr_head_inv_data_siz:1,	// 16
-		 clr_rsp_pactype_inv:1,	// 17
-		 clr_head_sb_err:1,	// 18
-		 clr_missing_head:1,	// 19
-		 clr_head_inv_rd_type:1,	// 20
-		 clr_head_cmd_err_bit:1,	// 21
-		 clr_req_addr_align_in:1,	// 22
-		 clr_pio_req_addr_inv:1,	// 23
-		 clr_req_range_dsize_i:1,	// 24
-		 clr_early_term:1,	// 25
-		 clr_early_tail:1,	// 26
-		 clr_missing_tail:1,	// 27
-		 clr_data_flit_sb_err:1,	// 28
-		 clr_cm2hcm_req_cred_o:1,	// 29
-		 clr_cm2hcm_rsp_cred_o:1,	// 30
-		 clr_rx_bad_didn:1,	// 31
-		 clr_rd_dma_err_rsp:1,	// 32
-		 clr_rd_dma_tnum_tout:1,	// 33
-		 clr_rd_dma_multi_tnum:1,	// 34
-		 clr_wr_dma_err_rsp:1,	// 35
-		 clr_wr_dma_tnum_tout:1,	// 36
-		 clr_wr_dma_multi_tnum:1,	// 37
-		 clr_alg_data_overflow:1,	// 38
-		 clr_alg_data_underflo:1,	// 39
-		 clr_ram0_access_confl:1,	// 40
-		 clr_ram1_access_confl:1,	// 41
-		 clr_ram2_access_confl:1,	// 42
-		 clr_ram0_perr:1,	// 43
-		 clr_ram1_perr:1,	// 44
-		 clr_ram2_perr:1,	// 45
-		 clr_int_gen_rsp_err:1,	// 46
-		 clr_int_gen_tnum_tout:1,	// 47
-		 clr_rd_dma_prog_err:1,	// 48
-		 clr_wr_dma_prog_err:1,	// 49
-		:14;		// 63:50
-	};
-};
-
-union cm_error_intr_enable {
-	uint64_t cm_error_intr_enable_reg;
-	struct {
-		uint64_t int_en_ecc_sbe:1,	// 0
-		 int_en_ecc_mbe:1,	// 1
-		 int_en_unsupported_re:1,	// 2
-		 int_en_unexpected_rsp:1,	// 3
-		 int_en_bad_length:1,	// 4
-		 int_en_bad_datavalid:1,	// 5
-		 int_en_buffer_overflo:1,	// 6
-		 int_en_request_timeou:1,	// 7
-		:8,		// 15:8
-		 int_en_head_inv_data_:1,	// 16
-		 int_en_rsp_pactype_in:1,	// 17
-		 int_en_head_sb_err:1,	// 18
-		 int_en_missing_head:1,	// 19
-		 int_en_head_inv_rd_ty:1,	// 20
-		 int_en_head_cmd_err_b:1,	// 21
-		 int_en_req_addr_align:1,	// 22
-		 int_en_pio_req_addr_i:1,	// 23
-		 int_en_req_range_dsiz:1,	// 24
-		 int_en_early_term:1,	// 25
-		 int_en_early_tail:1,	// 26
-		 int_en_missing_tail:1,	// 27
-		 int_en_data_flit_sb_e:1,	// 28
-		 int_en_cm2hcm_req_cre:1,	// 29
-		 int_en_cm2hcm_rsp_cre:1,	// 30
-		 int_en_rx_bad_didn:1,	// 31
-		 int_en_rd_dma_err_rsp:1,	// 32
-		 int_en_rd_dma_tnum_to:1,	// 33
-		 int_en_rd_dma_multi_t:1,	// 34
-		 int_en_wr_dma_err_rsp:1,	// 35
-		 int_en_wr_dma_tnum_to:1,	// 36
-		 int_en_wr_dma_multi_t:1,	// 37
-		 int_en_alg_data_overf:1,	// 38
-		 int_en_alg_data_under:1,	// 39
-		 int_en_ram0_access_co:1,	// 40
-		 int_en_ram1_access_co:1,	// 41
-		 int_en_ram2_access_co:1,	// 42
-		 int_en_ram0_perr:1,	// 43
-		 int_en_ram1_perr:1,	// 44
-		 int_en_ram2_perr:1,	// 45
-		 int_en_int_gen_rsp_er:1,	// 46
-		 int_en_int_gen_tnum_t:1,	// 47
-		 int_en_rd_dma_prog_er:1,	// 48
-		 int_en_wr_dma_prog_er:1,	// 49
-		:14;		// 63:50
-	};
-};
-
-struct cm_mmr {
-	union cm_id id;
-	union cm_status status;
-	union cm_error_detail1 err_detail1;
-	union cm_error_detail2 err_detail2;
-	union cm_control control;
-	union cm_req_timeout req_timeout;
-	uint64_t reserved1[1];
-	union intr_dest int_dest;
-	uint64_t reserved2[2];
-	uint64_t targ_flush;
-	uint64_t reserved3[1];
-	union cm_error_status err_status;
-	union cm_clr_error_status clr_err_status;
-	union cm_error_intr_enable int_enable;
-};
-
-union dma_hostaddr {
-	uint64_t dma_hostaddr_reg;
-	struct {
-		uint64_t dma_sys_addr:56,	// 55:0
-		:8;		// 63:56
-	};
-};
-
-union dma_localaddr {
-	uint64_t dma_localaddr_reg;
-	struct {
-		uint64_t dma_ram_addr:21,	// 20:0
-		 dma_ram_sel:2,	// 22:21
-		:41;		// 63:23
-	};
-};
-
-union dma_control {
-	uint64_t dma_control_reg;
-	struct {
-		uint64_t dma_op_length:16,	// 15:0
-		:18,		// 33:16
-		 done_amo_en:1,	// 34
-		 done_int_en:1,	// 35
-		:1,		// 36
-		 pio_mem_n:1,	// 37
-		:26;		// 63:38
-	};
-};
-
-union dma_amo_dest {
-	uint64_t dma_amo_dest_reg;
-	struct {
-		uint64_t dma_amo_sys_addr:56,	// 55:0
-		 dma_amo_mod_type:3,	// 58:56
-		:5;		// 63:59
-	};
-};
-
-union rdma_aux_status {
-	uint64_t rdma_aux_status_reg;
-	struct {
-		uint64_t op_num_pacs_left:17,	// 16:0
-		:5,		// 21:17
-		 lrsp_buff_empty:1,	// 22
-		:17,		// 39:23
-		 pending_reqs_left:6,	// 45:40
-		:18;		// 63:46
-	};
-};
-
-struct rdma_mmr {
-	union dma_hostaddr host_addr;
-	union dma_localaddr local_addr;
-	union dma_control control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union rdma_aux_status aux_status;
-};
-
-union wdma_aux_status {
-	uint64_t wdma_aux_status_reg;
-	struct {
-		uint64_t op_num_pacs_left:17,	// 16:0
-		:4,		// 20:17
-		 lreq_buff_empty:1,	// 21
-		:18,		// 39:22
-		 pending_reqs_left:6,	// 45:40
-		:18;		// 63:46
-	};
-};
-
-struct wdma_mmr {
-	union dma_hostaddr host_addr;
-	union dma_localaddr local_addr;
-	union dma_control control;
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union wdma_aux_status aux_status;
-};
-
-union algo_step {
-	uint64_t algo_step_reg;
-	struct {
-		uint64_t alg_step_cnt:16,	// 15:0
-		:48;		// 63:16
-	};
-};
-
-struct algo_mmr {
-	union dma_amo_dest amo_dest;
-	union intr_dest intr_dest;
-	union {
-		uint64_t algo_offset_reg;
-		struct {
-			uint64_t sram0_offset:7,	// 6:0
-			reserved0:1,	// 7
-			sram1_offset:7,	// 14:8
-			reserved1:1,	// 15
-			sram2_offset:7,	// 22:16
-			reserved2:14;	// 63:23
-		};
-	} sram_offset;
-	union algo_step step;
-};
-
-struct mbcs_mmr {
-	struct cm_mmr cm;
-	uint64_t reserved1[17];
-	struct rdma_mmr rdDma;
-	uint64_t reserved2[25];
-	struct wdma_mmr wrDma;
-	uint64_t reserved3[25];
-	struct algo_mmr algo;
-	uint64_t reserved4[156];
-};
-
-/*
- * defines
- */
-#define DEVICE_NAME "mbcs"
-#define MBCS_PART_NUM 0xfff0
-#define MBCS_PART_NUM_ALG0 0xf001
-#define MBCS_MFG_NUM  0x1
-
-struct algoblock {
-	uint64_t amoHostDest;
-	uint64_t amoModType;
-	uint64_t intrHostDest;
-	uint64_t intrVector;
-	uint64_t algoStepCount;
-};
-
-struct getdma {
-	uint64_t hostAddr;
-	uint64_t localAddr;
-	uint64_t bytes;
-	uint64_t DoneAmoEnable;
-	uint64_t DoneIntEnable;
-	uint64_t peerIO;
-	uint64_t amoHostDest;
-	uint64_t amoModType;
-	uint64_t intrHostDest;
-	uint64_t intrVector;
-};
-
-struct putdma {
-	uint64_t hostAddr;
-	uint64_t localAddr;
-	uint64_t bytes;
-	uint64_t DoneAmoEnable;
-	uint64_t DoneIntEnable;
-	uint64_t peerIO;
-	uint64_t amoHostDest;
-	uint64_t amoModType;
-	uint64_t intrHostDest;
-	uint64_t intrVector;
-};
-
-struct mbcs_soft {
-	struct list_head list;
-	struct cx_dev *cxdev;
-	int major;
-	int nasid;
-	void *mmr_base;
-	wait_queue_head_t dmawrite_queue;
-	wait_queue_head_t dmaread_queue;
-	wait_queue_head_t algo_queue;
-	struct sn_irq_info *get_sn_irq;
-	struct sn_irq_info *put_sn_irq;
-	struct sn_irq_info *algo_sn_irq;
-	struct getdma getdma;
-	struct putdma putdma;
-	struct algoblock algo;
-	uint64_t gscr_addr;	// pio addr
-	uint64_t ram0_addr;	// pio addr
-	uint64_t ram1_addr;	// pio addr
-	uint64_t ram2_addr;	// pio addr
-	uint64_t debug_addr;	// pio addr
-	atomic_t dmawrite_done;
-	atomic_t dmaread_done;
-	atomic_t algo_done;
-	struct mutex dmawritelock;
-	struct mutex dmareadlock;
-	struct mutex algolock;
-};
-
-static int mbcs_open(struct inode *ip, struct file *fp);
-static ssize_t mbcs_sram_read(struct file *fp, char __user *buf, size_t len,
-			      loff_t * off);
-static ssize_t mbcs_sram_write(struct file *fp, const char __user *buf, size_t len,
-			       loff_t * off);
-static loff_t mbcs_sram_llseek(struct file *filp, loff_t off, int whence);
-static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma);
-
-#endif				// __MBCS_H__
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index e75c9df7c2d8..a9d9f074fbd6 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -9,11 +9,8 @@
  *
  * This driver exports the SN special memory (mspec) facility to user
  * processes.
- * There are three types of memory made available thru this driver:
- * fetchops, uncached and cached.
- *
- * Fetchops are atomic memory operations that are implemented in the
- * memory controller on SGI SN hardware.
+ * There are two types of memory made available thru this driver:
+ * uncached and cached.
  *
  * Uncached are used for memory write combining feature of the ia64
  * cpu.
@@ -46,16 +43,8 @@
 #include <linux/atomic.h>
 #include <asm/tlbflush.h>
 #include <asm/uncached.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/arch.h>
-#include <asm/sn/mspec.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/io.h>
-#include <asm/sn/bte.h>
-#include <asm/sn/shubio.h>
 
 
-#define FETCHOP_ID	"SGI Fetchop,"
 #define CACHED_ID	"Cached,"
 #define UNCACHED_ID	"Uncached"
 #define REVISION	"4.0"
@@ -65,17 +54,10 @@
  * Page types allocated by the device.
  */
 enum mspec_page_type {
-	MSPEC_FETCHOP = 1,
-	MSPEC_CACHED,
+	MSPEC_CACHED = 2,
 	MSPEC_UNCACHED
 };
 
-#ifdef CONFIG_SGI_SN
-static int is_sn2;
-#else
-#define is_sn2		0
-#endif
-
 /*
  * One of these structures is allocated when an mspec region is mmaped. The
  * structure is pointed to by the vma->vm_private_data field in the vma struct.
@@ -96,39 +78,6 @@ struct vma_data {
 	unsigned long maddr[0];	/* Array of MSPEC addresses. */
 };
 
-/* used on shub2 to clear FOP cache in the HUB */
-static unsigned long scratch_page[MAX_NUMNODES];
-#define SH2_AMO_CACHE_ENTRIES	4
-
-static inline int
-mspec_zero_block(unsigned long addr, int len)
-{
-	int status;
-
-	if (is_sn2) {
-		if (is_shub2()) {
-			int nid;
-			void *p;
-			int i;
-
-			nid = nasid_to_cnodeid(get_node_number(__pa(addr)));
-			p = (void *)TO_AMO(scratch_page[nid]);
-
-			for (i=0; i < SH2_AMO_CACHE_ENTRIES; i++) {
-				FETCHOP_LOAD_OP(p, FETCHOP_LOAD);
-				p += FETCHOP_VAR_SIZE;
-			}
-		}
-
-		status = bte_copy(0, addr & ~__IA64_UNCACHED_OFFSET, len,
-				  BTE_WACQUIRE | BTE_ZERO_FILL, NULL);
-	} else {
-		memset((char *) addr, 0, len);
-		status = 0;
-	}
-	return status;
-}
-
 /*
  * mspec_open
  *
@@ -173,11 +122,8 @@ mspec_close(struct vm_area_struct *vma)
 		 */
 		my_page = vdata->maddr[index];
 		vdata->maddr[index] = 0;
-		if (!mspec_zero_block(my_page, PAGE_SIZE))
-			uncached_free_page(my_page, 1);
-		else
-			printk(KERN_WARNING "mspec_close(): "
-			       "failed to zero page %ld\n", my_page);
+		memset((char *)my_page, 0, PAGE_SIZE);
+		uncached_free_page(my_page, 1);
 	}
 
 	kvfree(vdata);
@@ -213,11 +159,7 @@ mspec_fault(struct vm_fault *vmf)
 		spin_unlock(&vdata->lock);
 	}
 
-	if (vdata->type == MSPEC_FETCHOP)
-		paddr = TO_AMO(maddr);
-	else
-		paddr = maddr & ~__IA64_UNCACHED_OFFSET;
-
+	paddr = maddr & ~__IA64_UNCACHED_OFFSET;
 	pfn = paddr >> PAGE_SHIFT;
 
 	return vmf_insert_pfn(vmf->vma, vmf->address, pfn);
@@ -269,7 +211,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
 	vma->vm_private_data = vdata;
 
 	vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
-	if (vdata->type == MSPEC_FETCHOP || vdata->type == MSPEC_UNCACHED)
+	if (vdata->type == MSPEC_UNCACHED)
 		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 	vma->vm_ops = &mspec_vm_ops;
 
@@ -277,12 +219,6 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
 }
 
 static int
-fetchop_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	return mspec_mmap(file, vma, MSPEC_FETCHOP);
-}
-
-static int
 cached_mmap(struct file *file, struct vm_area_struct *vma)
 {
 	return mspec_mmap(file, vma, MSPEC_CACHED);
@@ -294,18 +230,6 @@ uncached_mmap(struct file *file, struct vm_area_struct *vma)
 	return mspec_mmap(file, vma, MSPEC_UNCACHED);
 }
 
-static const struct file_operations fetchop_fops = {
-	.owner = THIS_MODULE,
-	.mmap = fetchop_mmap,
-	.llseek = noop_llseek,
-};
-
-static struct miscdevice fetchop_miscdev = {
-	.minor = MISC_DYNAMIC_MINOR,
-	.name = "sgi_fetchop",
-	.fops = &fetchop_fops
-};
-
 static const struct file_operations cached_fops = {
 	.owner = THIS_MODULE,
 	.mmap = cached_mmap,
@@ -339,89 +263,32 @@ static int __init
 mspec_init(void)
 {
 	int ret;
-	int nid;
-
-	/*
-	 * The fetchop device only works on SN2 hardware, uncached and cached
-	 * memory drivers should both be valid on all ia64 hardware
-	 */
-#ifdef CONFIG_SGI_SN
-	if (ia64_platform_is("sn2")) {
-		is_sn2 = 1;
-		if (is_shub2()) {
-			ret = -ENOMEM;
-			for_each_node_state(nid, N_ONLINE) {
-				int actual_nid;
-				int nasid;
-				unsigned long phys;
-
-				scratch_page[nid] = uncached_alloc_page(nid, 1);
-				if (scratch_page[nid] == 0)
-					goto free_scratch_pages;
-				phys = __pa(scratch_page[nid]);
-				nasid = get_node_number(phys);
-				actual_nid = nasid_to_cnodeid(nasid);
-				if (actual_nid != nid)
-					goto free_scratch_pages;
-			}
-		}
 
-		ret = misc_register(&fetchop_miscdev);
-		if (ret) {
-			printk(KERN_ERR
-			       "%s: failed to register device %i\n",
-			       FETCHOP_ID, ret);
-			goto free_scratch_pages;
-		}
-	}
-#endif
 	ret = misc_register(&cached_miscdev);
 	if (ret) {
 		printk(KERN_ERR "%s: failed to register device %i\n",
 		       CACHED_ID, ret);
-		if (is_sn2)
-			misc_deregister(&fetchop_miscdev);
-		goto free_scratch_pages;
+		return ret;
 	}
 	ret = misc_register(&uncached_miscdev);
 	if (ret) {
 		printk(KERN_ERR "%s: failed to register device %i\n",
 		       UNCACHED_ID, ret);
 		misc_deregister(&cached_miscdev);
-		if (is_sn2)
-			misc_deregister(&fetchop_miscdev);
-		goto free_scratch_pages;
+		return ret;
 	}
 
-	printk(KERN_INFO "%s %s initialized devices: %s %s %s\n",
-	       MSPEC_BASENAME, REVISION, is_sn2 ? FETCHOP_ID : "",
-	       CACHED_ID, UNCACHED_ID);
+	printk(KERN_INFO "%s %s initialized devices: %s %s\n",
+	       MSPEC_BASENAME, REVISION, CACHED_ID, UNCACHED_ID);
 
 	return 0;
-
- free_scratch_pages:
-	for_each_node(nid) {
-		if (scratch_page[nid] != 0)
-			uncached_free_page(scratch_page[nid], 1);
-	}
-	return ret;
 }
 
 static void __exit
 mspec_exit(void)
 {
-	int nid;
-
 	misc_deregister(&uncached_miscdev);
 	misc_deregister(&cached_miscdev);
-	if (is_sn2) {
-		misc_deregister(&fetchop_miscdev);
-
-		for_each_node(nid) {
-			if (scratch_page[nid] != 0)
-				uncached_free_page(scratch_page[nid], 1);
-		}
-	}
 }
 
 module_init(mspec_init);
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
deleted file mode 100644
index 5918ea7499bb..000000000000
--- a/drivers/char/snsc.c
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004, 2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * System controller communication driver
- *
- * This driver allows a user process to communicate with the system
- * controller (a.k.a. "IRouter") network in an SGI SN system.
- */
-
-#include <linux/interrupt.h>
-#include <linux/sched/signal.h>
-#include <linux/device.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <asm/sn/io.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/module.h>
-#include <asm/sn/geo.h>
-#include <asm/sn/nodepda.h>
-#include "snsc.h"
-
-#define SYSCTL_BASENAME	"snsc"
-
-#define SCDRV_BUFSZ	2048
-#define SCDRV_TIMEOUT	1000
-
-static DEFINE_MUTEX(scdrv_mutex);
-static irqreturn_t
-scdrv_interrupt(int irq, void *subch_data)
-{
-	struct subch_data_s *sd = subch_data;
-	unsigned long flags;
-	int status;
-
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	spin_lock(&sd->sd_wlock);
-	status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-
-	if (status > 0) {
-		if (status & SAL_IROUTER_INTR_RECV) {
-			wake_up(&sd->sd_rq);
-		}
-		if (status & SAL_IROUTER_INTR_XMIT) {
-			ia64_sn_irtr_intr_disable
-			    (sd->sd_nasid, sd->sd_subch,
-			     SAL_IROUTER_INTR_XMIT);
-			wake_up(&sd->sd_wq);
-		}
-	}
-	spin_unlock(&sd->sd_wlock);
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-	return IRQ_HANDLED;
-}
-
-/*
- * scdrv_open
- *
- * Reserve a subchannel for system controller communication.
- */
-
-static int
-scdrv_open(struct inode *inode, struct file *file)
-{
-	struct sysctl_data_s *scd;
-	struct subch_data_s *sd;
-	int rv;
-
-	/* look up device info for this device file */
-	scd = container_of(inode->i_cdev, struct sysctl_data_s, scd_cdev);
-
-	/* allocate memory for subchannel data */
-	sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
-	if (sd == NULL) {
-		printk("%s: couldn't allocate subchannel data\n",
-		       __func__);
-		return -ENOMEM;
-	}
-
-	/* initialize subch_data_s fields */
-	sd->sd_nasid = scd->scd_nasid;
-	sd->sd_subch = ia64_sn_irtr_open(scd->scd_nasid);
-
-	if (sd->sd_subch < 0) {
-		kfree(sd);
-		printk("%s: couldn't allocate subchannel\n", __func__);
-		return -EBUSY;
-	}
-
-	spin_lock_init(&sd->sd_rlock);
-	spin_lock_init(&sd->sd_wlock);
-	init_waitqueue_head(&sd->sd_rq);
-	init_waitqueue_head(&sd->sd_wq);
-	sema_init(&sd->sd_rbs, 1);
-	sema_init(&sd->sd_wbs, 1);
-
-	file->private_data = sd;
-
-	/* hook this subchannel up to the system controller interrupt */
-	mutex_lock(&scdrv_mutex);
-	rv = request_irq(SGI_UART_VECTOR, scdrv_interrupt,
-			 IRQF_SHARED, SYSCTL_BASENAME, sd);
-	if (rv) {
-		ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch);
-		kfree(sd);
-		printk("%s: irq request failed (%d)\n", __func__, rv);
-		mutex_unlock(&scdrv_mutex);
-		return -EBUSY;
-	}
-	mutex_unlock(&scdrv_mutex);
-	return 0;
-}
-
-/*
- * scdrv_release
- *
- * Release a previously-reserved subchannel.
- */
-
-static int
-scdrv_release(struct inode *inode, struct file *file)
-{
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-	int rv;
-
-	/* free the interrupt */
-	free_irq(SGI_UART_VECTOR, sd);
-
-	/* ask SAL to close the subchannel */
-	rv = ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch);
-
-	kfree(sd);
-	return rv;
-}
-
-/*
- * scdrv_read
- *
- * Called to read bytes from the open IRouter pipe.
- *
- */
-
-static inline int
-read_status_check(struct subch_data_s *sd, int *len)
-{
-	return ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch, sd->sd_rb, len);
-}
-
-static ssize_t
-scdrv_read(struct file *file, char __user *buf, size_t count, loff_t *f_pos)
-{
-	int status;
-	int len;
-	unsigned long flags;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-
-	/* try to get control of the read buffer */
-	if (down_trylock(&sd->sd_rbs)) {
-		/* somebody else has it now;
-		 * if we're non-blocking, then exit...
-		 */
-		if (file->f_flags & O_NONBLOCK) {
-			return -EAGAIN;
-		}
-		/* ...or if we want to block, then do so here */
-		if (down_interruptible(&sd->sd_rbs)) {
-			/* something went wrong with wait */
-			return -ERESTARTSYS;
-		}
-	}
-
-	/* anything to read? */
-	len = CHUNKSIZE;
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	status = read_status_check(sd, &len);
-
-	/* if not, and we're blocking I/O, loop */
-	while (status < 0) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		if (file->f_flags & O_NONBLOCK) {
-			spin_unlock_irqrestore(&sd->sd_rlock, flags);
-			up(&sd->sd_rbs);
-			return -EAGAIN;
-		}
-
-		len = CHUNKSIZE;
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&sd->sd_rq, &wait);
-		spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
-		schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
-
-		remove_wait_queue(&sd->sd_rq, &wait);
-		if (signal_pending(current)) {
-			/* wait was interrupted */
-			up(&sd->sd_rbs);
-			return -ERESTARTSYS;
-		}
-
-		spin_lock_irqsave(&sd->sd_rlock, flags);
-		status = read_status_check(sd, &len);
-	}
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
-	if (len > 0) {
-		/* we read something in the last read_status_check(); copy
-		 * it out to user space
-		 */
-		if (count < len) {
-			pr_debug("%s: only accepting %d of %d bytes\n",
-				 __func__, (int) count, len);
-		}
-		len = min((int) count, len);
-		if (copy_to_user(buf, sd->sd_rb, len))
-			len = -EFAULT;
-	}
-
-	/* release the read buffer and wake anyone who might be
-	 * waiting for it
-	 */
-	up(&sd->sd_rbs);
-
-	/* return the number of characters read in */
-	return len;
-}
-
-/*
- * scdrv_write
- *
- * Writes a chunk of an IRouter packet (or other system controller data)
- * to the system controller.
- *
- */
-static inline int
-write_status_check(struct subch_data_s *sd, int count)
-{
-	return ia64_sn_irtr_send(sd->sd_nasid, sd->sd_subch, sd->sd_wb, count);
-}
-
-static ssize_t
-scdrv_write(struct file *file, const char __user *buf,
-	    size_t count, loff_t *f_pos)
-{
-	unsigned long flags;
-	int status;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-
-	/* try to get control of the write buffer */
-	if (down_trylock(&sd->sd_wbs)) {
-		/* somebody else has it now;
-		 * if we're non-blocking, then exit...
-		 */
-		if (file->f_flags & O_NONBLOCK) {
-			return -EAGAIN;
-		}
-		/* ...or if we want to block, then do so here */
-		if (down_interruptible(&sd->sd_wbs)) {
-			/* something went wrong with wait */
-			return -ERESTARTSYS;
-		}
-	}
-
-	count = min((int) count, CHUNKSIZE);
-	if (copy_from_user(sd->sd_wb, buf, count)) {
-		up(&sd->sd_wbs);
-		return -EFAULT;
-	}
-
-	/* try to send the buffer */
-	spin_lock_irqsave(&sd->sd_wlock, flags);
-	status = write_status_check(sd, count);
-
-	/* if we failed, and we want to block, then loop */
-	while (status <= 0) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		if (file->f_flags & O_NONBLOCK) {
-			spin_unlock_irqrestore(&sd->sd_wlock, flags);
-			up(&sd->sd_wbs);
-			return -EAGAIN;
-		}
-
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&sd->sd_wq, &wait);
-		spin_unlock_irqrestore(&sd->sd_wlock, flags);
-
-		schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
-
-		remove_wait_queue(&sd->sd_wq, &wait);
-		if (signal_pending(current)) {
-			/* wait was interrupted */
-			up(&sd->sd_wbs);
-			return -ERESTARTSYS;
-		}
-
-		spin_lock_irqsave(&sd->sd_wlock, flags);
-		status = write_status_check(sd, count);
-	}
-	spin_unlock_irqrestore(&sd->sd_wlock, flags);
-
-	/* release the write buffer and wake anyone who's waiting for it */
-	up(&sd->sd_wbs);
-
-	/* return the number of characters accepted (should be the complete
-	 * "chunk" as requested)
-	 */
-	if ((status >= 0) && (status < count)) {
-		pr_debug("Didn't accept the full chunk; %d of %d\n",
-			 status, (int) count);
-	}
-	return status;
-}
-
-static __poll_t
-scdrv_poll(struct file *file, struct poll_table_struct *wait)
-{
-	__poll_t mask = 0;
-	int status = 0;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-	unsigned long flags;
-
-	poll_wait(file, &sd->sd_rq, wait);
-	poll_wait(file, &sd->sd_wq, wait);
-
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	spin_lock(&sd->sd_wlock);
-	status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-	spin_unlock(&sd->sd_wlock);
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
-	if (status > 0) {
-		if (status & SAL_IROUTER_INTR_RECV) {
-			mask |= EPOLLIN | EPOLLRDNORM;
-		}
-		if (status & SAL_IROUTER_INTR_XMIT) {
-			mask |= EPOLLOUT | EPOLLWRNORM;
-		}
-	}
-
-	return mask;
-}
-
-static const struct file_operations scdrv_fops = {
-	.owner =	THIS_MODULE,
-	.read =		scdrv_read,
-	.write =	scdrv_write,
-	.poll =		scdrv_poll,
-	.open =		scdrv_open,
-	.release =	scdrv_release,
-	.llseek =	noop_llseek,
-};
-
-static struct class *snsc_class;
-
-/*
- * scdrv_init
- *
- * Called at boot time to initialize the system controller communication
- * facility.
- */
-int __init
-scdrv_init(void)
-{
-	geoid_t geoid;
-	cnodeid_t cnode;
-	char devname[32];
-	char *devnamep;
-	struct sysctl_data_s *scd;
-	void *salbuf;
-	dev_t first_dev, dev;
-	nasid_t event_nasid;
-
-	if (!ia64_platform_is("sn2"))
-		return -ENODEV;
-
-	event_nasid = ia64_sn_get_console_nasid();
-
-	snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
-	if (IS_ERR(snsc_class)) {
-		printk("%s: failed to allocate class\n", __func__);
-		return PTR_ERR(snsc_class);
-	}
-
-	if (alloc_chrdev_region(&first_dev, 0, num_cnodes,
-				SYSCTL_BASENAME) < 0) {
-		printk("%s: failed to register SN system controller device\n",
-		       __func__);
-		return -ENODEV;
-	}
-
-	for (cnode = 0; cnode < num_cnodes; cnode++) {
-			geoid = cnodeid_get_geoid(cnode);
-			devnamep = devname;
-			format_module_id(devnamep, geo_module(geoid),
-					 MODULE_FORMAT_BRIEF);
-			devnamep = devname + strlen(devname);
-			sprintf(devnamep, "^%d#%d", geo_slot(geoid),
-				geo_slab(geoid));
-
-			/* allocate sysctl device data */
-			scd = kzalloc(sizeof (struct sysctl_data_s),
-				      GFP_KERNEL);
-			if (!scd) {
-				printk("%s: failed to allocate device info"
-				       "for %s/%s\n", __func__,
-				       SYSCTL_BASENAME, devname);
-				continue;
-			}
-
-			/* initialize sysctl device data fields */
-			scd->scd_nasid = cnodeid_to_nasid(cnode);
-			if (!(salbuf = kmalloc(SCDRV_BUFSZ, GFP_KERNEL))) {
-				printk("%s: failed to allocate driver buffer"
-				       "(%s%s)\n", __func__,
-				       SYSCTL_BASENAME, devname);
-				kfree(scd);
-				continue;
-			}
-
-			if (ia64_sn_irtr_init(scd->scd_nasid, salbuf,
-					      SCDRV_BUFSZ) < 0) {
-				printk
-				    ("%s: failed to initialize SAL for"
-				     " system controller communication"
-				     " (%s/%s): outdated PROM?\n",
-				     __func__, SYSCTL_BASENAME, devname);
-				kfree(scd);
-				kfree(salbuf);
-				continue;
-			}
-
-			dev = first_dev + cnode;
-			cdev_init(&scd->scd_cdev, &scdrv_fops);
-			if (cdev_add(&scd->scd_cdev, dev, 1)) {
-				printk("%s: failed to register system"
-				       " controller device (%s%s)\n",
-				       __func__, SYSCTL_BASENAME, devname);
-				kfree(scd);
-				kfree(salbuf);
-				continue;
-			}
-
-			device_create(snsc_class, NULL, dev, NULL,
-				      "%s", devname);
-
-			ia64_sn_irtr_intr_enable(scd->scd_nasid,
-						 0 /*ignored */ ,
-						 SAL_IROUTER_INTR_RECV);
-
-                        /* on the console nasid, prepare to receive
-                         * system controller environmental events
-                         */
-                        if(scd->scd_nasid == event_nasid) {
-                                scdrv_event_init(scd);
-                        }
-	}
-	return 0;
-}
-device_initcall(scdrv_init);
diff --git a/drivers/char/snsc.h b/drivers/char/snsc.h
deleted file mode 100644
index e8c52c882b21..000000000000
--- a/drivers/char/snsc.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * This file contains macros and data types for communication with the
- * system controllers in SGI SN systems.
- */
-
-#ifndef _SN_SYSCTL_H_
-#define _SN_SYSCTL_H_
-
-#include <linux/types.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-#include <linux/fs.h>
-#include <linux/cdev.h>
-#include <linux/semaphore.h>
-#include <asm/sn/types.h>
-
-#define CHUNKSIZE 127
-
-/* This structure is used to track an open subchannel. */
-struct subch_data_s {
-	nasid_t sd_nasid;	/* node on which the subchannel was opened */
-	int sd_subch;		/* subchannel number */
-	spinlock_t sd_rlock;	/* monitor lock for rsv */
-	spinlock_t sd_wlock;	/* monitor lock for wsv */
-	wait_queue_head_t sd_rq;	/* wait queue for readers */
-	wait_queue_head_t sd_wq;	/* wait queue for writers */
-	struct semaphore sd_rbs;	/* semaphore for read buffer */
-	struct semaphore sd_wbs;	/* semaphore for write buffer */
-
-	char sd_rb[CHUNKSIZE];	/* read buffer */
-	char sd_wb[CHUNKSIZE];	/* write buffer */
-};
-
-struct sysctl_data_s {
-	struct cdev scd_cdev;	/* Character device info */
-	nasid_t scd_nasid;	/* Node on which subchannels are opened. */
-};
-
-
-/* argument types */
-#define IR_ARG_INT              0x00    /* 4-byte integer (big-endian)  */
-#define IR_ARG_ASCII            0x01    /* null-terminated ASCII string */
-#define IR_ARG_UNKNOWN          0x80    /* unknown data type.  The low
-                                         * 7 bits will contain the data
-                                         * length.                      */
-#define IR_ARG_UNKNOWN_LENGTH_MASK	0x7f
-
-
-/* system controller event codes */
-#define EV_CLASS_MASK		0xf000ul
-#define EV_SEVERITY_MASK	0x0f00ul
-#define EV_COMPONENT_MASK	0x00fful
-
-#define EV_CLASS_POWER		0x1000ul
-#define EV_CLASS_FAN		0x2000ul
-#define EV_CLASS_TEMP		0x3000ul
-#define EV_CLASS_ENV		0x4000ul
-#define EV_CLASS_TEST_FAULT	0x5000ul
-#define EV_CLASS_TEST_WARNING	0x6000ul
-#define EV_CLASS_PWRD_NOTIFY	0x8000ul
-
-/* ENV class codes */
-#define ENV_PWRDN_PEND		0x4101ul
-
-#define EV_SEVERITY_POWER_STABLE	0x0000ul
-#define EV_SEVERITY_POWER_LOW_WARNING	0x0100ul
-#define EV_SEVERITY_POWER_HIGH_WARNING	0x0200ul
-#define EV_SEVERITY_POWER_HIGH_FAULT	0x0300ul
-#define EV_SEVERITY_POWER_LOW_FAULT	0x0400ul
-
-#define EV_SEVERITY_FAN_STABLE		0x0000ul
-#define EV_SEVERITY_FAN_WARNING		0x0100ul
-#define EV_SEVERITY_FAN_FAULT		0x0200ul
-
-#define EV_SEVERITY_TEMP_STABLE		0x0000ul
-#define EV_SEVERITY_TEMP_ADVISORY	0x0100ul
-#define EV_SEVERITY_TEMP_CRITICAL	0x0200ul
-#define EV_SEVERITY_TEMP_FAULT		0x0300ul
-
-void scdrv_event_init(struct sysctl_data_s *);
-
-#endif /* _SN_SYSCTL_H_ */
diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
deleted file mode 100644
index e452673dff66..000000000000
--- a/drivers/char/snsc_event.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * System controller event handler
- *
- * These routines deal with environmental events arriving from the
- * system controllers.
- */
-
-#include <linux/interrupt.h>
-#include <linux/sched/signal.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/unaligned.h>
-#include "snsc.h"
-
-static struct subch_data_s *event_sd;
-
-void scdrv_event(unsigned long);
-DECLARE_TASKLET(sn_sysctl_event, scdrv_event, 0);
-
-/*
- * scdrv_event_interrupt
- *
- * Pull incoming environmental events off the physical link to the
- * system controller and put them in a temporary holding area in SAL.
- * Schedule scdrv_event() to move them along to their ultimate
- * destination.
- */
-static irqreturn_t
-scdrv_event_interrupt(int irq, void *subch_data)
-{
-	struct subch_data_s *sd = subch_data;
-	unsigned long flags;
-	int status;
-
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-
-	if ((status > 0) && (status & SAL_IROUTER_INTR_RECV)) {
-		tasklet_schedule(&sn_sysctl_event);
-	}
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-	return IRQ_HANDLED;
-}
-
-
-/*
- * scdrv_parse_event
- *
- * Break an event (as read from SAL) into useful pieces so we can decide
- * what to do with it.
- */
-static int
-scdrv_parse_event(char *event, int *src, int *code, int *esp_code, char *desc)
-{
-	char *desc_end;
-
-	/* record event source address */
-	*src = get_unaligned_be32(event);
-	event += 4; 			/* move on to event code */
-
-	/* record the system controller's event code */
-	*code = get_unaligned_be32(event);
-	event += 4;			/* move on to event arguments */
-
-	/* how many arguments are in the packet? */
-	if (*event++ != 2) {
-		/* if not 2, give up */
-		return -1;
-	}
-
-	/* parse out the ESP code */
-	if (*event++ != IR_ARG_INT) {
-		/* not an integer argument, so give up */
-		return -1;
-	}
-	*esp_code = get_unaligned_be32(event);
-	event += 4;
-
-	/* parse out the event description */
-	if (*event++ != IR_ARG_ASCII) {
-		/* not an ASCII string, so give up */
-		return -1;
-	}
-	event[CHUNKSIZE-1] = '\0';	/* ensure this string ends! */
-	event += 2; 			/* skip leading CR/LF */
-	desc_end = desc + sprintf(desc, "%s", event);
-
-	/* strip trailing CR/LF (if any) */
-	for (desc_end--;
-	     (desc_end != desc) && ((*desc_end == 0xd) || (*desc_end == 0xa));
-	     desc_end--) {
-		*desc_end = '\0';
-	}
-
-	return 0;
-}
-
-
-/*
- * scdrv_event_severity
- *
- * Figure out how urgent a message we should write to the console/syslog
- * via printk.
- */
-static char *
-scdrv_event_severity(int code)
-{
-	int ev_class = (code & EV_CLASS_MASK);
-	int ev_severity = (code & EV_SEVERITY_MASK);
-	char *pk_severity = KERN_NOTICE;
-
-	switch (ev_class) {
-	case EV_CLASS_POWER:
-		switch (ev_severity) {
-		case EV_SEVERITY_POWER_LOW_WARNING:
-		case EV_SEVERITY_POWER_HIGH_WARNING:
-			pk_severity = KERN_WARNING;
-			break;
-		case EV_SEVERITY_POWER_HIGH_FAULT:
-		case EV_SEVERITY_POWER_LOW_FAULT:
-			pk_severity = KERN_ALERT;
-			break;
-		}
-		break;
-	case EV_CLASS_FAN:
-		switch (ev_severity) {
-		case EV_SEVERITY_FAN_WARNING:
-			pk_severity = KERN_WARNING;
-			break;
-		case EV_SEVERITY_FAN_FAULT:
-			pk_severity = KERN_CRIT;
-			break;
-		}
-		break;
-	case EV_CLASS_TEMP:
-		switch (ev_severity) {
-		case EV_SEVERITY_TEMP_ADVISORY:
-			pk_severity = KERN_WARNING;
-			break;
-		case EV_SEVERITY_TEMP_CRITICAL:
-			pk_severity = KERN_CRIT;
-			break;
-		case EV_SEVERITY_TEMP_FAULT:
-			pk_severity = KERN_ALERT;
-			break;
-		}
-		break;
-	case EV_CLASS_ENV:
-		pk_severity = KERN_ALERT;
-		break;
-	case EV_CLASS_TEST_FAULT:
-		pk_severity = KERN_ALERT;
-		break;
-	case EV_CLASS_TEST_WARNING:
-		pk_severity = KERN_WARNING;
-		break;
-	case EV_CLASS_PWRD_NOTIFY:
-		pk_severity = KERN_ALERT;
-		break;
-	}
-
-	return pk_severity;
-}
-
-
-/*
- * scdrv_dispatch_event
- *
- * Do the right thing with an incoming event.  That's often nothing
- * more than printing it to the system log.  For power-down notifications
- * we start a graceful shutdown.
- */
-static void
-scdrv_dispatch_event(char *event, int len)
-{
-	static int snsc_shutting_down = 0;
-	int code, esp_code, src, class;
-	char desc[CHUNKSIZE];
-	char *severity;
-
-	if (scdrv_parse_event(event, &src, &code, &esp_code, desc) < 0) {
-		/* ignore uninterpretible event */
-		return;
-	}
-
-	/* how urgent is the message? */
-	severity = scdrv_event_severity(code);
-
-	class = (code & EV_CLASS_MASK);
-
-	if (class == EV_CLASS_PWRD_NOTIFY || code == ENV_PWRDN_PEND) {
-		if (snsc_shutting_down)
-			return;
-
-		snsc_shutting_down = 1;
-
-		/* give a message for each type of event */
-		if (class == EV_CLASS_PWRD_NOTIFY)
-			printk(KERN_NOTICE "Power off indication received."
-			       " Sending SIGPWR to init...\n");
-		else if (code == ENV_PWRDN_PEND)
-			printk(KERN_CRIT "WARNING: Shutting down the system"
-			       " due to a critical environmental condition."
-			       " Sending SIGPWR to init...\n");
-
-		/* give a SIGPWR signal to init proc */
-		kill_cad_pid(SIGPWR, 0);
-	} else {
-		/* print to system log */
-		printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
-	}
-}
-
-
-/*
- * scdrv_event
- *
- * Called as a tasklet when an event arrives from the L1.  Read the event
- * from where it's temporarily stored in SAL and call scdrv_dispatch_event()
- * to send it on its way.  Keep trying to read events until SAL indicates
- * that there are no more immediately available.
- */
-void
-scdrv_event(unsigned long dummy)
-{
-	int status;
-	int len;
-	unsigned long flags;
-	struct subch_data_s *sd = event_sd;
-
-	/* anything to read? */
-	len = CHUNKSIZE;
-	spin_lock_irqsave(&sd->sd_rlock, flags);
-	status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
-				   sd->sd_rb, &len);
-
-	while (!(status < 0)) {
-		spin_unlock_irqrestore(&sd->sd_rlock, flags);
-		scdrv_dispatch_event(sd->sd_rb, len);
-		len = CHUNKSIZE;
-		spin_lock_irqsave(&sd->sd_rlock, flags);
-		status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
-					   sd->sd_rb, &len);
-	}
-	spin_unlock_irqrestore(&sd->sd_rlock, flags);
-}
-
-
-/*
- * scdrv_event_init
- *
- * Sets up a system controller subchannel to begin receiving event
- * messages. This is sort of a specialized version of scdrv_open()
- * in drivers/char/sn_sysctl.c.
- */
-void
-scdrv_event_init(struct sysctl_data_s *scd)
-{
-	int rv;
-
-	event_sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
-	if (event_sd == NULL) {
-		printk(KERN_WARNING "%s: couldn't allocate subchannel info"
-		       " for event monitoring\n", __func__);
-		return;
-	}
-
-	/* initialize subch_data_s fields */
-	event_sd->sd_nasid = scd->scd_nasid;
-	spin_lock_init(&event_sd->sd_rlock);
-
-	/* ask the system controllers to send events to this node */
-	event_sd->sd_subch = ia64_sn_sysctl_event_init(scd->scd_nasid);
-
-	if (event_sd->sd_subch < 0) {
-		kfree(event_sd);
-		printk(KERN_WARNING "%s: couldn't open event subchannel\n",
-		       __func__);
-		return;
-	}
-
-	/* hook event subchannel up to the system controller interrupt */
-	rv = request_irq(SGI_UART_VECTOR, scdrv_event_interrupt,
-			 IRQF_SHARED, "system controller events", event_sd);
-	if (rv) {
-		printk(KERN_WARNING "%s: irq request failed (%d)\n",
-		       __func__, rv);
-		ia64_sn_irtr_close(event_sd->sd_nasid, event_sd->sd_subch);
-		kfree(event_sd);
-		return;
-	}
-}