char: remove the SGI tiocx/mbcs driver

The SGI SN2 support is about to be removed.  Remove this driver that
depends on the SN2 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lkml.kernel.org/r/20190813072514.23299-3-hch@lst.de
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 0 insertions, 831 deletions

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");