Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2976 insertions, 0 deletions

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
new file mode 100644
index 00000000000..8f7c1a1ed7f
--- /dev/null
+++ b/drivers/block/cciss.c
@@ -0,0 +1,2976 @@
+/*
+ *    Disk Array driver for HP SA 5xxx and 6xxx Controllers
+ *    Copyright 2000, 2002 Hewlett-Packard Development Company, L.P.
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *    NON INFRINGEMENT.  See the GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *    Questions/Comments/Bugfixes to iss_storagedev@hp.com
+ *
+ */
+
+#include <linux/config.h>	/* CONFIG_PROC_FS */
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/major.h>
+#include <linux/fs.h>
+#include <linux/bio.h>
+#include <linux/blkpg.h>
+#include <linux/timer.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h> 
+#include <linux/hdreg.h>
+#include <linux/spinlock.h>
+#include <linux/compat.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#include <linux/blkdev.h>
+#include <linux/genhd.h>
+#include <linux/completion.h>
+
+#define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
+#define DRIVER_NAME "HP CISS Driver (v 2.6.6)"
+#define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,6)
+
+/* Embedded module documentation macros - see modules.h */
+MODULE_AUTHOR("Hewlett-Packard Company");
+MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.6");
+MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
+			" SA6i P600 P800 E400");
+MODULE_LICENSE("GPL");
+
+#include "cciss_cmd.h"
+#include "cciss.h"
+#include <linux/cciss_ioctl.h>
+
+/* define the PCI info for the cards we can control */
+static const struct pci_device_id cciss_pci_device_id[] = {
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
+			0x0E11, 0x4070, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
+                        0x0E11, 0x4080, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
+                        0x0E11, 0x4082, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
+                        0x0E11, 0x4083, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
+		0x0E11, 0x409A, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
+		0x0E11, 0x409B, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
+		0x0E11, 0x409C, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
+		0x0E11, 0x409D, 0, 0, 0},
+	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
+		0x0E11, 0x4091, 0, 0, 0},
+	{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
+		0x103C, 0x3225, 0, 0, 0},
+	{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
+		0x103c, 0x3223, 0, 0, 0},
+	{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
+		0x103c, 0x3231, 0, 0, 0},
+	{0,}
+};
+MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
+
+#define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
+
+/*  board_id = Subsystem Device ID & Vendor ID
+ *  product = Marketing Name for the board
+ *  access = Address of the struct of function pointers 
+ */
+static struct board_type products[] = {
+	{ 0x40700E11, "Smart Array 5300", &SA5_access },
+	{ 0x40800E11, "Smart Array 5i", &SA5B_access},
+	{ 0x40820E11, "Smart Array 532", &SA5B_access},
+	{ 0x40830E11, "Smart Array 5312", &SA5B_access},
+	{ 0x409A0E11, "Smart Array 641", &SA5_access},
+	{ 0x409B0E11, "Smart Array 642", &SA5_access},
+	{ 0x409C0E11, "Smart Array 6400", &SA5_access},
+	{ 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
+	{ 0x40910E11, "Smart Array 6i", &SA5_access},
+	{ 0x3225103C, "Smart Array P600", &SA5_access},
+	{ 0x3223103C, "Smart Array P800", &SA5_access},
+	{ 0x3231103C, "Smart Array E400", &SA5_access},
+};
+
+/* How long to wait (in millesconds) for board to go into simple mode */
+#define MAX_CONFIG_WAIT 30000 
+#define MAX_IOCTL_CONFIG_WAIT 1000
+
+/*define how many times we will try a command because of bus resets */
+#define MAX_CMD_RETRIES 3
+
+#define READ_AHEAD 	 1024
+#define NR_CMDS		 384 /* #commands that can be outstanding */
+#define MAX_CTLR	32
+
+/* Originally cciss driver only supports 8 major numbers */
+#define MAX_CTLR_ORIG 	8
+
+
+#define CCISS_DMA_MASK	0xFFFFFFFF	/* 32 bit DMA */
+
+static ctlr_info_t *hba[MAX_CTLR];
+
+static void do_cciss_request(request_queue_t *q);
+static int cciss_open(struct inode *inode, struct file *filep);
+static int cciss_release(struct inode *inode, struct file *filep);
+static int cciss_ioctl(struct inode *inode, struct file *filep, 
+		unsigned int cmd, unsigned long arg);
+
+static int revalidate_allvol(ctlr_info_t *host);
+static int cciss_revalidate(struct gendisk *disk);
+static int deregister_disk(struct gendisk *disk);
+static int register_new_disk(ctlr_info_t *h);
+
+static void cciss_getgeometry(int cntl_num);
+
+static void start_io( ctlr_info_t *h);
+static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
+	unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
+	unsigned char *scsi3addr, int cmd_type);
+
+#ifdef CONFIG_PROC_FS
+static int cciss_proc_get_info(char *buffer, char **start, off_t offset, 
+		int length, int *eof, void *data);
+static void cciss_procinit(int i);
+#else
+static void cciss_procinit(int i) {}
+#endif /* CONFIG_PROC_FS */
+
+#ifdef CONFIG_COMPAT
+static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
+#endif
+
+static struct block_device_operations cciss_fops  = {
+	.owner		= THIS_MODULE,
+	.open		= cciss_open, 
+	.release       	= cciss_release,
+        .ioctl		= cciss_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl   = cciss_compat_ioctl,
+#endif
+	.revalidate_disk= cciss_revalidate,
+};
+
+/*
+ * Enqueuing and dequeuing functions for cmdlists.
+ */
+static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
+{
+        if (*Qptr == NULL) {
+                *Qptr = c;
+                c->next = c->prev = c;
+        } else {
+                c->prev = (*Qptr)->prev;
+                c->next = (*Qptr);
+                (*Qptr)->prev->next = c;
+                (*Qptr)->prev = c;
+        }
+}
+
+static inline CommandList_struct *removeQ(CommandList_struct **Qptr, 
+						CommandList_struct *c)
+{
+        if (c && c->next != c) {
+                if (*Qptr == c) *Qptr = c->next;
+                c->prev->next = c->next;
+                c->next->prev = c->prev;
+        } else {
+                *Qptr = NULL;
+        }
+        return c;
+}
+
+#include "cciss_scsi.c"		/* For SCSI tape support */
+
+#ifdef CONFIG_PROC_FS
+
+/*
+ * Report information about this controller.
+ */
+#define ENG_GIG 1000000000
+#define ENG_GIG_FACTOR (ENG_GIG/512)
+#define RAID_UNKNOWN 6
+static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
+	                                   "UNKNOWN"};
+
+static struct proc_dir_entry *proc_cciss;
+
+static int cciss_proc_get_info(char *buffer, char **start, off_t offset, 
+		int length, int *eof, void *data)
+{
+        off_t pos = 0;
+        off_t len = 0;
+        int size, i, ctlr;
+        ctlr_info_t *h = (ctlr_info_t*)data;
+        drive_info_struct *drv;
+	unsigned long flags;
+        sector_t vol_sz, vol_sz_frac;
+
+        ctlr = h->ctlr;
+
+	/* prevent displaying bogus info during configuration
+	 * or deconfiguration of a logical volume
+	 */
+	spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+	if (h->busy_configuring) {
+		spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+	return -EBUSY;
+	}
+	h->busy_configuring = 1;
+	spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+
+        size = sprintf(buffer, "%s: HP %s Controller\n"
+		"Board ID: 0x%08lx\n"
+		"Firmware Version: %c%c%c%c\n"
+		"IRQ: %d\n"
+		"Logical drives: %d\n"
+		"Current Q depth: %d\n"
+		"Current # commands on controller: %d\n"
+		"Max Q depth since init: %d\n"
+		"Max # commands on controller since init: %d\n"
+		"Max SG entries since init: %d\n\n",
+                h->devname,
+                h->product_name,
+                (unsigned long)h->board_id,
+		h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
+                (unsigned int)h->intr,
+                h->num_luns, 
+		h->Qdepth, h->commands_outstanding,
+		h->maxQsinceinit, h->max_outstanding, h->maxSG);
+
+        pos += size; len += size;
+	cciss_proc_tape_report(ctlr, buffer, &pos, &len);
+	for(i=0; i<=h->highest_lun; i++) {
+
+                drv = &h->drv[i];
+		if (drv->block_size == 0)
+			continue;
+
+		vol_sz = drv->nr_blocks;
+		vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
+		vol_sz_frac *= 100;
+		sector_div(vol_sz_frac, ENG_GIG_FACTOR);
+
+		if (drv->raid_level > 5)
+			drv->raid_level = RAID_UNKNOWN;
+		size = sprintf(buffer+len, "cciss/c%dd%d:"
+				"\t%4u.%02uGB\tRAID %s\n",
+				ctlr, i, (int)vol_sz, (int)vol_sz_frac,
+				raid_label[drv->raid_level]);
+                pos += size; len += size;
+        }
+
+        *eof = 1;
+        *start = buffer+offset;
+        len -= offset;
+        if (len>length)
+                len = length;
+	h->busy_configuring = 0;
+        return len;
+}
+
+static int 
+cciss_proc_write(struct file *file, const char __user *buffer, 
+			unsigned long count, void *data)
+{
+	unsigned char cmd[80];
+	int len;
+#ifdef CONFIG_CISS_SCSI_TAPE
+	ctlr_info_t *h = (ctlr_info_t *) data;
+	int rc;
+#endif
+
+	if (count > sizeof(cmd)-1) return -EINVAL;
+	if (copy_from_user(cmd, buffer, count)) return -EFAULT;
+	cmd[count] = '\0';
+	len = strlen(cmd);	// above 3 lines ensure safety
+	if (len && cmd[len-1] == '\n')
+		cmd[--len] = '\0';
+#	ifdef CONFIG_CISS_SCSI_TAPE
+		if (strcmp("engage scsi", cmd)==0) {
+			rc = cciss_engage_scsi(h->ctlr);
+			if (rc != 0) return -rc;
+			return count;
+		}
+		/* might be nice to have "disengage" too, but it's not 
+		   safely possible. (only 1 module use count, lock issues.) */
+#	endif
+	return -EINVAL;
+}
+
+/*
+ * Get us a file in /proc/cciss that says something about each controller.
+ * Create /proc/cciss if it doesn't exist yet.
+ */
+static void __devinit cciss_procinit(int i)
+{
+	struct proc_dir_entry *pde;
+
+        if (proc_cciss == NULL) {
+                proc_cciss = proc_mkdir("cciss", proc_root_driver);
+                if (!proc_cciss) 
+			return;
+        }
+
+	pde = create_proc_read_entry(hba[i]->devname, 
+		S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, 
+		proc_cciss, cciss_proc_get_info, hba[i]);
+	pde->write_proc = cciss_proc_write;
+}
+#endif /* CONFIG_PROC_FS */
+
+/* 
+ * For operations that cannot sleep, a command block is allocated at init, 
+ * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
+ * which ones are free or in use.  For operations that can wait for kmalloc 
+ * to possible sleep, this routine can be called with get_from_pool set to 0. 
+ * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. 
+ */ 
+static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
+{
+	CommandList_struct *c;
+	int i; 
+	u64bit temp64;
+	dma_addr_t cmd_dma_handle, err_dma_handle;
+
+	if (!get_from_pool)
+	{
+		c = (CommandList_struct *) pci_alloc_consistent(
+			h->pdev, sizeof(CommandList_struct), &cmd_dma_handle); 
+        	if(c==NULL)
+                 	return NULL;
+		memset(c, 0, sizeof(CommandList_struct));
+
+		c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
+					h->pdev, sizeof(ErrorInfo_struct), 
+					&err_dma_handle);
+	
+		if (c->err_info == NULL)
+		{
+			pci_free_consistent(h->pdev, 
+				sizeof(CommandList_struct), c, cmd_dma_handle);
+			return NULL;
+		}
+		memset(c->err_info, 0, sizeof(ErrorInfo_struct));
+	} else /* get it out of the controllers pool */ 
+	{
+	     	do {
+                	i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
+                        if (i == NR_CMDS)
+                                return NULL;
+                } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
+#ifdef CCISS_DEBUG
+		printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
+#endif
+                c = h->cmd_pool + i;
+		memset(c, 0, sizeof(CommandList_struct));
+		cmd_dma_handle = h->cmd_pool_dhandle 
+					+ i*sizeof(CommandList_struct);
+		c->err_info = h->errinfo_pool + i;
+		memset(c->err_info, 0, sizeof(ErrorInfo_struct));
+		err_dma_handle = h->errinfo_pool_dhandle 
+					+ i*sizeof(ErrorInfo_struct);
+                h->nr_allocs++;
+        }
+
+	c->busaddr = (__u32) cmd_dma_handle;
+	temp64.val = (__u64) err_dma_handle;	
+	c->ErrDesc.Addr.lower = temp64.val32.lower;
+	c->ErrDesc.Addr.upper = temp64.val32.upper;
+	c->ErrDesc.Len = sizeof(ErrorInfo_struct);
+	
+	c->ctlr = h->ctlr;
+        return c;
+
+
+}
+
+/* 
+ * Frees a command block that was previously allocated with cmd_alloc(). 
+ */
+static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
+{
+	int i;
+	u64bit temp64;
+
+	if( !got_from_pool)
+	{ 
+		temp64.val32.lower = c->ErrDesc.Addr.lower;
+		temp64.val32.upper = c->ErrDesc.Addr.upper;
+		pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), 
+			c->err_info, (dma_addr_t) temp64.val);
+		pci_free_consistent(h->pdev, sizeof(CommandList_struct), 
+			c, (dma_addr_t) c->busaddr);
+	} else 
+	{
+		i = c - h->cmd_pool;
+		clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
+                h->nr_frees++;
+        }
+}
+
+static inline ctlr_info_t *get_host(struct gendisk *disk)
+{
+	return disk->queue->queuedata; 
+}
+
+static inline drive_info_struct *get_drv(struct gendisk *disk)
+{
+	return disk->private_data;
+}
+
+/*
+ * Open.  Make sure the device is really there.
+ */
+static int cciss_open(struct inode *inode, struct file *filep)
+{
+	ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
+	drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
+
+#ifdef CCISS_DEBUG
+	printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
+#endif /* CCISS_DEBUG */ 
+
+	/*
+	 * Root is allowed to open raw volume zero even if it's not configured
+	 * so array config can still work. Root is also allowed to open any
+	 * volume that has a LUN ID, so it can issue IOCTL to reread the
+	 * disk information.  I don't think I really like this
+	 * but I'm already using way to many device nodes to claim another one
+	 * for "raw controller".
+	 */
+	if (drv->nr_blocks == 0) {
+		if (iminor(inode) != 0)	{ 	/* not node 0? */
+			/* if not node 0 make sure it is a partition = 0 */
+			if (iminor(inode) & 0x0f) {
+			return -ENXIO;
+				/* if it is, make sure we have a LUN ID */
+			} else if (drv->LunID == 0) {
+				return -ENXIO;
+			}
+		}
+		if (!capable(CAP_SYS_ADMIN))
+			return -EPERM;
+	}
+	drv->usage_count++;
+	host->usage_count++;
+	return 0;
+}
+/*
+ * Close.  Sync first.
+ */
+static int cciss_release(struct inode *inode, struct file *filep)
+{
+	ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
+	drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
+
+#ifdef CCISS_DEBUG
+	printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
+#endif /* CCISS_DEBUG */
+
+	drv->usage_count--;
+	host->usage_count--;
+	return 0;
+}
+
+#ifdef CONFIG_COMPAT
+
+static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
+{
+	int ret;
+	lock_kernel();
+	ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
+	unlock_kernel();
+	return ret;
+}
+
+static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
+static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
+
+static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case CCISS_GETPCIINFO:
+	case CCISS_GETINTINFO:
+	case CCISS_SETINTINFO:
+	case CCISS_GETNODENAME:
+	case CCISS_SETNODENAME:
+	case CCISS_GETHEARTBEAT:
+	case CCISS_GETBUSTYPES:
+	case CCISS_GETFIRMVER:
+	case CCISS_GETDRIVVER:
+	case CCISS_REVALIDVOLS:
+	case CCISS_DEREGDISK:
+	case CCISS_REGNEWDISK:
+	case CCISS_REGNEWD:
+	case CCISS_RESCANDISK:
+	case CCISS_GETLUNINFO:
+		return do_ioctl(f, cmd, arg);
+
+	case CCISS_PASSTHRU32:
+		return cciss_ioctl32_passthru(f, cmd, arg);
+	case CCISS_BIG_PASSTHRU32:
+		return cciss_ioctl32_big_passthru(f, cmd, arg);
+
+	default:
+		return -ENOIOCTLCMD;
+	}
+}
+
+static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
+{
+	IOCTL32_Command_struct __user *arg32 =
+		(IOCTL32_Command_struct __user *) arg;
+	IOCTL_Command_struct arg64;
+	IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
+	int err;
+	u32 cp;
+
+	err = 0;
+	err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
+	err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
+	err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
+	err |= get_user(arg64.buf_size, &arg32->buf_size);
+	err |= get_user(cp, &arg32->buf);
+	arg64.buf = compat_ptr(cp);
+	err |= copy_to_user(p, &arg64, sizeof(arg64));
+
+	if (err)
+		return -EFAULT;
+
+	err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
+	if (err)
+		return err;
+	err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
+	if (err)
+		return -EFAULT;
+	return err;
+}
+
+static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
+{
+	BIG_IOCTL32_Command_struct __user *arg32 =
+		(BIG_IOCTL32_Command_struct __user *) arg;
+	BIG_IOCTL_Command_struct arg64;
+	BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
+	int err;
+	u32 cp;
+
+	err = 0;
+	err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
+	err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
+	err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
+	err |= get_user(arg64.buf_size, &arg32->buf_size);
+	err |= get_user(arg64.malloc_size, &arg32->malloc_size);
+	err |= get_user(cp, &arg32->buf);
+	arg64.buf = compat_ptr(cp);
+	err |= copy_to_user(p, &arg64, sizeof(arg64));
+
+	if (err)
+		 return -EFAULT;
+
+	err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
+	if (err)
+		return err;
+	err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
+	if (err)
+		return -EFAULT;
+	return err;
+}
+#endif
+/*
+ * ioctl 
+ */
+static int cciss_ioctl(struct inode *inode, struct file *filep, 
+		unsigned int cmd, unsigned long arg)
+{
+	struct block_device *bdev = inode->i_bdev;
+	struct gendisk *disk = bdev->bd_disk;
+	ctlr_info_t *host = get_host(disk);
+	drive_info_struct *drv = get_drv(disk);
+	int ctlr = host->ctlr;
+	void __user *argp = (void __user *)arg;
+
+#ifdef CCISS_DEBUG
+	printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
+#endif /* CCISS_DEBUG */ 
+	
+	switch(cmd) {
+	case HDIO_GETGEO:
+	{
+                struct hd_geometry driver_geo;
+                if (drv->cylinders) {
+                        driver_geo.heads = drv->heads;
+                        driver_geo.sectors = drv->sectors;
+                        driver_geo.cylinders = drv->cylinders;
+                } else
+			return -ENXIO;
+                driver_geo.start= get_start_sect(inode->i_bdev);
+                if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
+                        return  -EFAULT;
+                return(0);
+	}
+
+	case CCISS_GETPCIINFO:
+	{
+		cciss_pci_info_struct pciinfo;
+
+		if (!arg) return -EINVAL;
+		pciinfo.bus = host->pdev->bus->number;
+		pciinfo.dev_fn = host->pdev->devfn;
+		pciinfo.board_id = host->board_id;
+		if (copy_to_user(argp, &pciinfo,  sizeof( cciss_pci_info_struct )))
+			return  -EFAULT;
+		return(0);
+	}	
+	case CCISS_GETINTINFO:
+	{
+		cciss_coalint_struct intinfo;
+		if (!arg) return -EINVAL;
+		intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
+		intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
+		if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
+			return -EFAULT;
+                return(0);
+        }
+	case CCISS_SETINTINFO:
+        {
+                cciss_coalint_struct intinfo;
+		unsigned long flags;
+		int i;
+
+		if (!arg) return -EINVAL;	
+		if (!capable(CAP_SYS_ADMIN)) return -EPERM;
+		if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
+			return -EFAULT;
+		if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
+
+		{
+//			printk("cciss_ioctl: delay and count cannot be 0\n");
+			return( -EINVAL);
+		}
+		spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+		/* Update the field, and then ring the doorbell */ 
+		writel( intinfo.delay, 
+			&(host->cfgtable->HostWrite.CoalIntDelay));
+		writel( intinfo.count, 
+                        &(host->cfgtable->HostWrite.CoalIntCount));
+		writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
+
+		for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
+			if (!(readl(host->vaddr + SA5_DOORBELL) 
+					& CFGTBL_ChangeReq))
+				break;
+			/* delay and try again */
+			udelay(1000);
+		}	
+		spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+		if (i >= MAX_IOCTL_CONFIG_WAIT)
+			return -EAGAIN;
+                return(0);
+        }
+	case CCISS_GETNODENAME:
+        {
+                NodeName_type NodeName;
+		int i; 
+
+		if (!arg) return -EINVAL;
+		for(i=0;i<16;i++)
+			NodeName[i] = readb(&host->cfgtable->ServerName[i]);
+                if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
+                	return  -EFAULT;
+                return(0);
+        }
+	case CCISS_SETNODENAME:
+	{
+		NodeName_type NodeName;
+		unsigned long flags;
+		int i;
+
+		if (!arg) return -EINVAL;
+		if (!capable(CAP_SYS_ADMIN)) return -EPERM;
+		
+		if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
+			return -EFAULT;
+
+		spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+
+			/* Update the field, and then ring the doorbell */ 
+		for(i=0;i<16;i++)
+			writeb( NodeName[i], &host->cfgtable->ServerName[i]);
+			
+		writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
+
+		for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
+			if (!(readl(host->vaddr + SA5_DOORBELL) 
+					& CFGTBL_ChangeReq))
+				break;
+			/* delay and try again */
+			udelay(1000);
+		}	
+		spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+		if (i >= MAX_IOCTL_CONFIG_WAIT)
+			return -EAGAIN;
+                return(0);
+        }
+
+	case CCISS_GETHEARTBEAT:
+        {
+                Heartbeat_type heartbeat;
+
+		if (!arg) return -EINVAL;
+                heartbeat = readl(&host->cfgtable->HeartBeat);
+                if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
+                	return -EFAULT;
+                return(0);
+        }
+	case CCISS_GETBUSTYPES:
+        {
+                BusTypes_type BusTypes;
+
+		if (!arg) return -EINVAL;
+                BusTypes = readl(&host->cfgtable->BusTypes);
+                if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
+                	return  -EFAULT;
+                return(0);
+        }
+	case CCISS_GETFIRMVER:
+        {
+		FirmwareVer_type firmware;
+
+		if (!arg) return -EINVAL;
+		memcpy(firmware, host->firm_ver, 4);
+
+                if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
+                	return -EFAULT;
+                return(0);
+        }
+        case CCISS_GETDRIVVER:
+        {
+		DriverVer_type DriverVer = DRIVER_VERSION;
+
+                if (!arg) return -EINVAL;
+
+                if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
+                	return -EFAULT;
+                return(0);
+        }
+
+	case CCISS_REVALIDVOLS:
+		if (bdev != bdev->bd_contains || drv != host->drv)
+			return -ENXIO;
+                return revalidate_allvol(host);
+
+ 	case CCISS_GETLUNINFO: {
+ 		LogvolInfo_struct luninfo;
+ 		int i;
+ 		
+ 		luninfo.LunID = drv->LunID;
+ 		luninfo.num_opens = drv->usage_count;
+ 		luninfo.num_parts = 0;
+ 		/* count partitions 1 to 15 with sizes > 0 */
+ 		for (i = 0; i < MAX_PART - 1; i++) {
+			if (!disk->part[i])
+				continue;
+			if (disk->part[i]->nr_sects != 0)
+				luninfo.num_parts++;
+		}
+ 		if (copy_to_user(argp, &luninfo,
+ 				sizeof(LogvolInfo_struct)))
+ 			return -EFAULT;
+ 		return(0);
+ 	}
+	case CCISS_DEREGDISK:
+		return deregister_disk(disk);
+
+	case CCISS_REGNEWD:
+		return register_new_disk(host);
+
+	case CCISS_PASSTHRU:
+	{
+		IOCTL_Command_struct iocommand;
+		CommandList_struct *c;
+		char 	*buff = NULL;
+		u64bit	temp64;
+		unsigned long flags;
+		DECLARE_COMPLETION(wait);
+
+		if (!arg) return -EINVAL;
+	
+		if (!capable(CAP_SYS_RAWIO)) return -EPERM;
+
+		if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
+			return -EFAULT;
+		if((iocommand.buf_size < 1) && 
+				(iocommand.Request.Type.Direction != XFER_NONE))
+		{	
+			return -EINVAL;
+		} 
+#if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
+		/* Check kmalloc limits */
+		if(iocommand.buf_size > 128000)
+			return -EINVAL;
+#endif
+		if(iocommand.buf_size > 0)
+		{
+			buff =  kmalloc(iocommand.buf_size, GFP_KERNEL);
+			if( buff == NULL) 
+				return -EFAULT;
+		}
+		if (iocommand.Request.Type.Direction == XFER_WRITE)
+		{
+			/* Copy the data into the buffer we created */ 
+			if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
+			{
+				kfree(buff);
+				return -EFAULT;
+			}
+		} else {
+			memset(buff, 0, iocommand.buf_size);
+		}
+		if ((c = cmd_alloc(host , 0)) == NULL)
+		{
+			kfree(buff);
+			return -ENOMEM;
+		}
+			// Fill in the command type 
+		c->cmd_type = CMD_IOCTL_PEND;
+			// Fill in Command Header 
+		c->Header.ReplyQueue = 0;  // unused in simple mode
+		if( iocommand.buf_size > 0) 	// buffer to fill 
+		{
+			c->Header.SGList = 1;
+			c->Header.SGTotal= 1;
+		} else	// no buffers to fill  
+		{
+			c->Header.SGList = 0;
+                	c->Header.SGTotal= 0;
+		}
+		c->Header.LUN = iocommand.LUN_info;
+		c->Header.Tag.lower = c->busaddr;  // use the kernel address the cmd block for tag
+		
+		// Fill in Request block 
+		c->Request = iocommand.Request; 
+	
+		// Fill in the scatter gather information
+		if (iocommand.buf_size > 0 ) 
+		{
+			temp64.val = pci_map_single( host->pdev, buff,
+                                        iocommand.buf_size, 
+                                PCI_DMA_BIDIRECTIONAL);	
+			c->SG[0].Addr.lower = temp64.val32.lower;
+			c->SG[0].Addr.upper = temp64.val32.upper;
+			c->SG[0].Len = iocommand.buf_size;
+			c->SG[0].Ext = 0;  // we are not chaining
+		}
+		c->waiting = &wait;
+
+		/* Put the request on the tail of the request queue */
+		spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+		addQ(&host->reqQ, c);
+		host->Qdepth++;
+		start_io(host);
+		spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+
+		wait_for_completion(&wait);
+
+		/* unlock the buffers from DMA */
+		temp64.val32.lower = c->SG[0].Addr.lower;
+                temp64.val32.upper = c->SG[0].Addr.upper;
+                pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
+                	iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
+
+		/* Copy the error information out */ 
+		iocommand.error_info = *(c->err_info);
+		if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
+		{
+			kfree(buff);
+			cmd_free(host, c, 0);
+			return( -EFAULT);	
+		} 	
+
+		if (iocommand.Request.Type.Direction == XFER_READ)
+                {
+                        /* Copy the data out of the buffer we created */
+                        if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
+			{
+                        	kfree(buff);
+				cmd_free(host, c, 0);
+				return -EFAULT;
+			}
+                }
+                kfree(buff);
+		cmd_free(host, c, 0);
+                return(0);
+	} 
+	case CCISS_BIG_PASSTHRU: {
+		BIG_IOCTL_Command_struct *ioc;
+		CommandList_struct *c;
+		unsigned char **buff = NULL;
+		int	*buff_size = NULL;
+		u64bit	temp64;
+		unsigned long flags;
+		BYTE sg_used = 0;
+		int status = 0;
+		int i;
+		DECLARE_COMPLETION(wait);
+		__u32   left;
+		__u32	sz;
+		BYTE    __user *data_ptr;
+
+		if (!arg)
+			return -EINVAL;
+		if (!capable(CAP_SYS_RAWIO))
+			return -EPERM;
+		ioc = (BIG_IOCTL_Command_struct *) 
+			kmalloc(sizeof(*ioc), GFP_KERNEL);
+		if (!ioc) {
+			status = -ENOMEM;
+			goto cleanup1;
+		}
+		if (copy_from_user(ioc, argp, sizeof(*ioc))) {
+			status = -EFAULT;
+			goto cleanup1;
+		}
+		if ((ioc->buf_size < 1) &&
+			(ioc->Request.Type.Direction != XFER_NONE)) {
+				status = -EINVAL;
+				goto cleanup1;
+		}
+		/* Check kmalloc limits  using all SGs */
+		if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
+			status = -EINVAL;
+			goto cleanup1;
+		}
+		if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
+			status = -EINVAL;
+			goto cleanup1;
+		}
+		buff = (unsigned char **) kmalloc(MAXSGENTRIES * 
+				sizeof(char *), GFP_KERNEL);
+		if (!buff) {
+			status = -ENOMEM;
+			goto cleanup1;
+		}
+		memset(buff, 0, MAXSGENTRIES);
+		buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int), 
+					GFP_KERNEL);
+		if (!buff_size) {
+			status = -ENOMEM;
+			goto cleanup1;
+		}
+		left = ioc->buf_size;
+		data_ptr = ioc->buf;
+		while (left) {
+			sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
+			buff_size[sg_used] = sz;
+			buff[sg_used] = kmalloc(sz, GFP_KERNEL);
+			if (buff[sg_used] == NULL) {
+				status = -ENOMEM;
+				goto cleanup1;
+			}
+			if (ioc->Request.Type.Direction == XFER_WRITE &&
+				copy_from_user(buff[sg_used], data_ptr, sz)) {
+					status = -ENOMEM;
+					goto cleanup1;			
+			} else {
+				memset(buff[sg_used], 0, sz);
+			}
+			left -= sz;
+			data_ptr += sz;
+			sg_used++;
+		}
+		if ((c = cmd_alloc(host , 0)) == NULL) {
+			status = -ENOMEM;
+			goto cleanup1;	
+		}
+		c->cmd_type = CMD_IOCTL_PEND;
+		c->Header.ReplyQueue = 0;
+		
+		if( ioc->buf_size > 0) {
+			c->Header.SGList = sg_used;
+			c->Header.SGTotal= sg_used;
+		} else { 
+			c->Header.SGList = 0;
+			c->Header.SGTotal= 0;
+		}
+		c->Header.LUN = ioc->LUN_info;
+		c->Header.Tag.lower = c->busaddr;
+		
+		c->Request = ioc->Request;
+		if (ioc->buf_size > 0 ) {
+			int i;
+			for(i=0; i<sg_used; i++) {
+				temp64.val = pci_map_single( host->pdev, buff[i],
+					buff_size[i],
+					PCI_DMA_BIDIRECTIONAL);
+				c->SG[i].Addr.lower = temp64.val32.lower;
+				c->SG[i].Addr.upper = temp64.val32.upper;
+				c->SG[i].Len = buff_size[i];
+				c->SG[i].Ext = 0;  /* we are not chaining */
+			}
+		}
+		c->waiting = &wait;
+		/* Put the request on the tail of the request queue */
+		spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+		addQ(&host->reqQ, c);
+		host->Qdepth++;
+		start_io(host);
+		spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+		wait_for_completion(&wait);
+		/* unlock the buffers from DMA */
+		for(i=0; i<sg_used; i++) {
+			temp64.val32.lower = c->SG[i].Addr.lower;
+			temp64.val32.upper = c->SG[i].Addr.upper;
+			pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
+				buff_size[i], PCI_DMA_BIDIRECTIONAL);
+		}
+		/* Copy the error information out */
+		ioc->error_info = *(c->err_info);
+		if (copy_to_user(argp, ioc, sizeof(*ioc))) {
+			cmd_free(host, c, 0);
+			status = -EFAULT;
+			goto cleanup1;
+		}
+		if (ioc->Request.Type.Direction == XFER_READ) {
+			/* Copy the data out of the buffer we created */
+			BYTE __user *ptr = ioc->buf;
+	        	for(i=0; i< sg_used; i++) {
+				if (copy_to_user(ptr, buff[i], buff_size[i])) {
+					cmd_free(host, c, 0);
+					status = -EFAULT;
+					goto cleanup1;
+				}
+				ptr += buff_size[i];
+			}
+		}
+		cmd_free(host, c, 0);
+		status = 0;
+cleanup1:
+		if (buff) {
+			for(i=0; i<sg_used; i++)
+				if(buff[i] != NULL)
+					kfree(buff[i]);
+			kfree(buff);
+		}
+		if (buff_size)
+			kfree(buff_size);
+		if (ioc)
+			kfree(ioc);
+		return(status);
+	}
+	default:
+		return -ENOTTY;
+	}
+	
+}
+
+/*
+ * revalidate_allvol is for online array config utilities.  After a
+ * utility reconfigures the drives in the array, it can use this function
+ * (through an ioctl) to make the driver zap any previous disk structs for
+ * that controller and get new ones.
+ *
+ * Right now I'm using the getgeometry() function to do this, but this
+ * function should probably be finer grained and allow you to revalidate one
+ * particualar logical volume (instead of all of them on a particular
+ * controller).
+ */
+static int revalidate_allvol(ctlr_info_t *host)
+{
+	int ctlr = host->ctlr, i;
+	unsigned long flags;
+
+        spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+        if (host->usage_count > 1) {