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, 1160 insertions, 0 deletions

diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c
new file mode 100644
index 000000000000..5fc5004ea07a
--- /dev/null
+++ b/drivers/message/i2o/i2o_config.c
@@ -0,0 +1,1160 @@
+/*
+ * I2O Configuration Interface Driver
+ *
+ * (C) Copyright 1999-2002  Red Hat
+ *
+ * Written by Alan Cox, Building Number Three Ltd
+ *
+ * Fixes/additions:
+ *	Deepak Saxena (04/20/1999):
+ *		Added basic ioctl() support
+ *	Deepak Saxena (06/07/1999):
+ *		Added software download ioctl (still testing)
+ *	Auvo Häkkinen (09/10/1999):
+ *		Changes to i2o_cfg_reply(), ioctl_parms()
+ *		Added ioct_validate()
+ *	Taneli Vähäkangas (09/30/1999):
+ *		Fixed ioctl_swdl()
+ *	Taneli Vähäkangas (10/04/1999):
+ *		Changed ioctl_swdl(), implemented ioctl_swul() and ioctl_swdel()
+ *	Deepak Saxena (11/18/1999):
+ *		Added event managmenet support
+ *	Alan Cox <alan@redhat.com>:
+ *		2.4 rewrite ported to 2.5
+ *	Markus Lidel <Markus.Lidel@shadowconnect.com>:
+ *		Added pass-thru support for Adaptec's raidutils
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/i2o.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/miscdevice.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+#include <linux/smp_lock.h>
+#include <linux/ioctl32.h>
+#include <linux/compat.h>
+#include <linux/syscalls.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#define OSM_NAME	"config-osm"
+#define OSM_VERSION	"$Rev$"
+#define OSM_DESCRIPTION	"I2O Configuration OSM"
+
+extern int i2o_parm_issue(struct i2o_device *, int, void *, int, void *, int);
+
+static spinlock_t i2o_config_lock;
+
+#define MODINC(x,y) ((x) = ((x) + 1) % (y))
+
+struct sg_simple_element {
+	u32 flag_count;
+	u32 addr_bus;
+};
+
+struct i2o_cfg_info {
+	struct file *fp;
+	struct fasync_struct *fasync;
+	struct i2o_evt_info event_q[I2O_EVT_Q_LEN];
+	u16 q_in;		// Queue head index
+	u16 q_out;		// Queue tail index
+	u16 q_len;		// Queue length
+	u16 q_lost;		// Number of lost events
+	ulong q_id;		// Event queue ID...used as tx_context
+	struct i2o_cfg_info *next;
+};
+static struct i2o_cfg_info *open_files = NULL;
+static ulong i2o_cfg_info_id = 0;
+
+/*
+ *	Each of these describes an i2o message handler. They are
+ *	multiplexed by the i2o_core code
+ */
+
+static struct i2o_driver i2o_config_driver = {
+	.name = OSM_NAME
+};
+
+static int i2o_cfg_getiops(unsigned long arg)
+{
+	struct i2o_controller *c;
+	u8 __user *user_iop_table = (void __user *)arg;
+	u8 tmp[MAX_I2O_CONTROLLERS];
+	int ret = 0;
+
+	memset(tmp, 0, MAX_I2O_CONTROLLERS);
+
+	list_for_each_entry(c, &i2o_controllers, list)
+	    tmp[c->unit] = 1;
+
+	if (copy_to_user(user_iop_table, tmp, MAX_I2O_CONTROLLERS))
+		ret = -EFAULT;
+
+	return ret;
+};
+
+static int i2o_cfg_gethrt(unsigned long arg)
+{
+	struct i2o_controller *c;
+	struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
+	struct i2o_cmd_hrtlct kcmd;
+	i2o_hrt *hrt;
+	int len;
+	u32 reslen;
+	int ret = 0;
+
+	if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
+		return -EFAULT;
+
+	if (get_user(reslen, kcmd.reslen) < 0)
+		return -EFAULT;
+
+	if (kcmd.resbuf == NULL)
+		return -EFAULT;
+
+	c = i2o_find_iop(kcmd.iop);
+	if (!c)
+		return -ENXIO;
+
+	hrt = (i2o_hrt *) c->hrt.virt;
+
+	len = 8 + ((hrt->entry_len * hrt->num_entries) << 2);
+
+	/* We did a get user...so assuming mem is ok...is this bad? */
+	put_user(len, kcmd.reslen);
+	if (len > reslen)
+		ret = -ENOBUFS;
+	if (copy_to_user(kcmd.resbuf, (void *)hrt, len))
+		ret = -EFAULT;
+
+	return ret;
+};
+
+static int i2o_cfg_getlct(unsigned long arg)
+{
+	struct i2o_controller *c;
+	struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
+	struct i2o_cmd_hrtlct kcmd;
+	i2o_lct *lct;
+	int len;
+	int ret = 0;
+	u32 reslen;
+
+	if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
+		return -EFAULT;
+
+	if (get_user(reslen, kcmd.reslen) < 0)
+		return -EFAULT;
+
+	if (kcmd.resbuf == NULL)
+		return -EFAULT;
+
+	c = i2o_find_iop(kcmd.iop);
+	if (!c)
+		return -ENXIO;
+
+	lct = (i2o_lct *) c->lct;
+
+	len = (unsigned int)lct->table_size << 2;
+	put_user(len, kcmd.reslen);
+	if (len > reslen)
+		ret = -ENOBUFS;
+	else if (copy_to_user(kcmd.resbuf, lct, len))
+		ret = -EFAULT;
+
+	return ret;
+};
+
+static int i2o_cfg_parms(unsigned long arg, unsigned int type)
+{
+	int ret = 0;
+	struct i2o_controller *c;
+	struct i2o_device *dev;
+	struct i2o_cmd_psetget __user *cmd =
+	    (struct i2o_cmd_psetget __user *)arg;
+	struct i2o_cmd_psetget kcmd;
+	u32 reslen;
+	u8 *ops;
+	u8 *res;
+	int len = 0;
+
+	u32 i2o_cmd = (type == I2OPARMGET ?
+		       I2O_CMD_UTIL_PARAMS_GET : I2O_CMD_UTIL_PARAMS_SET);
+
+	if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_psetget)))
+		return -EFAULT;
+
+	if (get_user(reslen, kcmd.reslen))
+		return -EFAULT;
+
+	c = i2o_find_iop(kcmd.iop);
+	if (!c)
+		return -ENXIO;
+
+	dev = i2o_iop_find_device(c, kcmd.tid);
+	if (!dev)
+		return -ENXIO;
+
+	ops = (u8 *) kmalloc(kcmd.oplen, GFP_KERNEL);
+	if (!ops)
+		return -ENOMEM;
+
+	if (copy_from_user(ops, kcmd.opbuf, kcmd.oplen)) {
+		kfree(ops);
+		return -EFAULT;
+	}
+
+	/*
+	 * It's possible to have a _very_ large table
+	 * and that the user asks for all of it at once...
+	 */
+	res = (u8 *) kmalloc(65536, GFP_KERNEL);
+	if (!res) {
+		kfree(ops);
+		return -ENOMEM;
+	}
+
+	len = i2o_parm_issue(dev, i2o_cmd, ops, kcmd.oplen, res, 65536);
+	kfree(ops);
+
+	if (len < 0) {
+		kfree(res);
+		return -EAGAIN;
+	}
+
+	put_user(len, kcmd.reslen);
+	if (len > reslen)
+		ret = -ENOBUFS;
+	else if (copy_to_user(kcmd.resbuf, res, len))
+		ret = -EFAULT;
+
+	kfree(res);
+
+	return ret;
+};
+
+static int i2o_cfg_swdl(unsigned long arg)
+{
+	struct i2o_sw_xfer kxfer;
+	struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
+	unsigned char maxfrag = 0, curfrag = 1;
+	struct i2o_dma buffer;
+	struct i2o_message __iomem *msg;
+	u32 m;
+	unsigned int status = 0, swlen = 0, fragsize = 8192;
+	struct i2o_controller *c;
+
+	if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
+		return -EFAULT;
+
+	if (get_user(swlen, kxfer.swlen) < 0)
+		return -EFAULT;
+
+	if (get_user(maxfrag, kxfer.maxfrag) < 0)
+		return -EFAULT;
+
+	if (get_user(curfrag, kxfer.curfrag) < 0)
+		return -EFAULT;
+
+	if (curfrag == maxfrag)
+		fragsize = swlen - (maxfrag - 1) * 8192;
+
+	if (!kxfer.buf || !access_ok(VERIFY_READ, kxfer.buf, fragsize))
+		return -EFAULT;
+
+	c = i2o_find_iop(kxfer.iop);
+	if (!c)
+		return -ENXIO;
+
+	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+	if (m == I2O_QUEUE_EMPTY)
+		return -EBUSY;
+
+	if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
+		i2o_msg_nop(c, m);
+		return -ENOMEM;
+	}
+
+	__copy_from_user(buffer.virt, kxfer.buf, fragsize);
+
+	writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
+	writel(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
+	       &msg->u.head[1]);
+	writel(i2o_config_driver.context, &msg->u.head[2]);
+	writel(0, &msg->u.head[3]);
+	writel((((u32) kxfer.flags) << 24) | (((u32) kxfer.sw_type) << 16) |
+	       (((u32) maxfrag) << 8) | (((u32) curfrag)), &msg->body[0]);
+	writel(swlen, &msg->body[1]);
+	writel(kxfer.sw_id, &msg->body[2]);
+	writel(0xD0000000 | fragsize, &msg->body[3]);
+	writel(buffer.phys, &msg->body[4]);
+
+	osm_debug("swdl frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
+	status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+
+	if (status != -ETIMEDOUT)
+		i2o_dma_free(&c->pdev->dev, &buffer);
+
+	if (status != I2O_POST_WAIT_OK) {
+		// it fails if you try and send frags out of order
+		// and for some yet unknown reasons too
+		osm_info("swdl failed, DetailedStatus = %d\n", status);
+		return status;
+	}
+
+	return 0;
+};
+
+static int i2o_cfg_swul(unsigned long arg)
+{
+	struct i2o_sw_xfer kxfer;
+	struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
+	unsigned char maxfrag = 0, curfrag = 1;
+	struct i2o_dma buffer;
+	struct i2o_message __iomem *msg;
+	u32 m;
+	unsigned int status = 0, swlen = 0, fragsize = 8192;
+	struct i2o_controller *c;
+	int ret = 0;
+
+	if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
+		goto return_fault;
+
+	if (get_user(swlen, kxfer.swlen) < 0)
+		goto return_fault;
+
+	if (get_user(maxfrag, kxfer.maxfrag) < 0)
+		goto return_fault;
+
+	if (get_user(curfrag, kxfer.curfrag) < 0)
+		goto return_fault;
+
+	if (curfrag == maxfrag)
+		fragsize = swlen - (maxfrag - 1) * 8192;
+
+	if (!kxfer.buf)
+		goto return_fault;
+
+	c = i2o_find_iop(kxfer.iop);
+	if (!c)
+		return -ENXIO;
+
+	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+	if (m == I2O_QUEUE_EMPTY)
+		return -EBUSY;
+
+	if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
+		i2o_msg_nop(c, m);
+		return -ENOMEM;
+	}
+
+	writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
+	writel(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
+	       &msg->u.head[1]);
+	writel(i2o_config_driver.context, &msg->u.head[2]);
+	writel(0, &msg->u.head[3]);
+	writel((u32) kxfer.flags << 24 | (u32) kxfer.
+	       sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag,
+	       &msg->body[0]);
+	writel(swlen, &msg->body[1]);
+	writel(kxfer.sw_id, &msg->body[2]);
+	writel(0xD0000000 | fragsize, &msg->body[3]);
+	writel(buffer.phys, &msg->body[4]);
+
+	osm_debug("swul frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
+	status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+
+	if (status != I2O_POST_WAIT_OK) {
+		if (status != -ETIMEDOUT)
+			i2o_dma_free(&c->pdev->dev, &buffer);
+
+		osm_info("swul failed, DetailedStatus = %d\n", status);
+		return status;
+	}
+
+	if (copy_to_user(kxfer.buf, buffer.virt, fragsize))
+		ret = -EFAULT;
+
+	i2o_dma_free(&c->pdev->dev, &buffer);
+
+return_ret:
+	return ret;
+return_fault:
+	ret = -EFAULT;
+	goto return_ret;
+};
+
+static int i2o_cfg_swdel(unsigned long arg)
+{
+	struct i2o_controller *c;
+	struct i2o_sw_xfer kxfer;
+	struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
+	struct i2o_message __iomem *msg;
+	u32 m;
+	unsigned int swlen;
+	int token;
+
+	if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
+		return -EFAULT;
+
+	if (get_user(swlen, kxfer.swlen) < 0)
+		return -EFAULT;
+
+	c = i2o_find_iop(kxfer.iop);
+	if (!c)
+		return -ENXIO;
+
+	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+	if (m == I2O_QUEUE_EMPTY)
+		return -EBUSY;
+
+	writel(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
+	writel(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID,
+	       &msg->u.head[1]);
+	writel(i2o_config_driver.context, &msg->u.head[2]);
+	writel(0, &msg->u.head[3]);
+	writel((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16,
+	       &msg->body[0]);
+	writel(swlen, &msg->body[1]);
+	writel(kxfer.sw_id, &msg->body[2]);
+
+	token = i2o_msg_post_wait(c, m, 10);
+
+	if (token != I2O_POST_WAIT_OK) {
+		osm_info("swdel failed, DetailedStatus = %d\n", token);
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+};
+
+static int i2o_cfg_validate(unsigned long arg)
+{
+	int token;
+	int iop = (int)arg;
+	struct i2o_message __iomem *msg;
+	u32 m;
+	struct i2o_controller *c;
+
+	c = i2o_find_iop(iop);
+	if (!c)
+		return -ENXIO;
+
+	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+	if (m == I2O_QUEUE_EMPTY)
+		return -EBUSY;
+
+	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
+	writel(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop,
+	       &msg->u.head[1]);
+	writel(i2o_config_driver.context, &msg->u.head[2]);
+	writel(0, &msg->u.head[3]);
+
+	token = i2o_msg_post_wait(c, m, 10);
+
+	if (token != I2O_POST_WAIT_OK) {
+		osm_info("Can't validate configuration, ErrorStatus = %d\n",
+			 token);
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+};
+
+static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
+{
+	struct i2o_message __iomem *msg;
+	u32 m;
+	struct i2o_evt_id __user *pdesc = (struct i2o_evt_id __user *)arg;
+	struct i2o_evt_id kdesc;
+	struct i2o_controller *c;
+	struct i2o_device *d;
+
+	if (copy_from_user(&kdesc, pdesc, sizeof(struct i2o_evt_id)))
+		return -EFAULT;
+
+	/* IOP exists? */
+	c = i2o_find_iop(kdesc.iop);
+	if (!c)
+		return -ENXIO;
+
+	/* Device exists? */
+	d = i2o_iop_find_device(c, kdesc.tid);
+	if (!d)
+		return -ENODEV;
+
+	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+	if (m == I2O_QUEUE_EMPTY)
+		return -EBUSY;
+
+	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
+	writel(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | kdesc.tid,
+	       &msg->u.head[1]);
+	writel(i2o_config_driver.context, &msg->u.head[2]);
+	writel(i2o_cntxt_list_add(c, fp->private_data), &msg->u.head[3]);
+	writel(kdesc.evt_mask, &msg->body[0]);
+
+	i2o_msg_post(c, m);
+
+	return 0;
+}
+
+static int i2o_cfg_evt_get(unsigned long arg, struct file *fp)
+{
+	struct i2o_cfg_info *p = NULL;
+	struct i2o_evt_get __user *uget = (struct i2o_evt_get __user *)arg;
+	struct i2o_evt_get kget;
+	unsigned long flags;
+
+	for (p = open_files; p; p = p->next)
+		if (p->q_id == (ulong) fp->private_data)
+			break;
+
+	if (!p->q_len)
+		return -ENOENT;
+
+	memcpy(&kget.info, &p->event_q[p->q_out], sizeof(struct i2o_evt_info));
+	MODINC(p->q_out, I2O_EVT_Q_LEN);
+	spin_lock_irqsave(&i2o_config_lock, flags);
+	p->q_len--;
+	kget.pending = p->q_len;
+	kget.lost = p->q_lost;
+	spin_unlock_irqrestore(&i2o_config_lock, flags);
+
+	if (copy_to_user(uget, &kget, sizeof(struct i2o_evt_get)))
+		return -EFAULT;
+	return 0;
+}
+
+#ifdef CONFIG_COMPAT
+static int i2o_cfg_passthru32(unsigned fd, unsigned cmnd, unsigned long arg,
+			      struct file *file)
+{
+	struct i2o_cmd_passthru32 __user *cmd;
+	struct i2o_controller *c;
+	u32 __user *user_msg;
+	u32 *reply = NULL;
+	u32 __user *user_reply = NULL;
+	u32 size = 0;
+	u32 reply_size = 0;
+	u32 rcode = 0;
+	struct i2o_dma sg_list[SG_TABLESIZE];
+	u32 sg_offset = 0;
+	u32 sg_count = 0;
+	u32 i = 0;
+	i2o_status_block *sb;
+	struct i2o_message *msg;
+	u32 m;
+	unsigned int iop;
+
+	cmd = (struct i2o_cmd_passthru32 __user *)arg;
+
+	if (get_user(iop, &cmd->iop) || get_user(i, &cmd->msg))
+		return -EFAULT;
+
+	user_msg = compat_ptr(i);
+
+	c = i2o_find_iop(iop);
+	if (!c) {
+		osm_debug("controller %d not found\n", iop);
+		return -ENXIO;
+	}
+
+	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+
+	sb = c->status_block.virt;
+
+	if (get_user(size, &user_msg[0])) {
+		osm_warn("unable to get size!\n");
+		return -EFAULT;
+	}
+	size = size >> 16;
+
+	if (size > sb->inbound_frame_size) {
+		osm_warn("size of message > inbound_frame_size");
+		return -EFAULT;
+	}
+
+	user_reply = &user_msg[size];
+
+	size <<= 2;		// Convert to bytes
+
+	/* Copy in the user's I2O command */
+	if (copy_from_user(msg, user_msg, size)) {
+		osm_warn("unable to copy user message\n");
+		return -EFAULT;
+	}
+	i2o_dump_message(msg);
+
+	if (get_user(reply_size, &user_reply[0]) < 0)
+		return -EFAULT;
+
+	reply_size >>= 16;
+	reply_size <<= 2;
+
+	reply = kmalloc(reply_size, GFP_KERNEL);
+	if (!reply) {
+		printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
+		       c->name);
+		return -ENOMEM;
+	}
+	memset(reply, 0, reply_size);
+
+	sg_offset = (msg->u.head[0] >> 4) & 0x0f;
+
+	writel(i2o_config_driver.context, &msg->u.s.icntxt);
+	writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
+
+	memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
+	if (sg_offset) {
+		struct sg_simple_element *sg;
+
+		if (sg_offset * 4 >= size) {
+			rcode = -EFAULT;
+			goto cleanup;
+		}
+		// TODO 64bit fix
+		sg = (struct sg_simple_element *)((&msg->u.head[0]) +
+						  sg_offset);
+		sg_count =
+		    (size - sg_offset * 4) / sizeof(struct sg_simple_element);
+		if (sg_count > SG_TABLESIZE) {
+			printk(KERN_DEBUG "%s:IOCTL SG List too large (%u)\n",
+			       c->name, sg_count);
+			kfree(reply);
+			return -EINVAL;
+		}
+
+		for (i = 0; i < sg_count; i++) {
+			int sg_size;
+			struct i2o_dma *p;
+
+			if (!(sg[i].flag_count & 0x10000000
+			      /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
+				printk(KERN_DEBUG
+				       "%s:Bad SG element %d - not simple (%x)\n",
+				       c->name, i, sg[i].flag_count);
+				rcode = -EINVAL;
+				goto cleanup;
+			}
+			sg_size = sg[i].flag_count & 0xffffff;
+			p = &(sg_list[i]);
+			/* Allocate memory for the transfer */
+			if (i2o_dma_alloc
+			    (&c->pdev->dev, p, sg_size,
+			     PCI_DMA_BIDIRECTIONAL)) {
+				printk(KERN_DEBUG
+				       "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
+				       c->name, sg_size, i, sg_count);
+				rcode = -ENOMEM;
+				goto cleanup;
+			}
+			/* Copy in the user's SG buffer if necessary */
+			if (sg[i].
+			    flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
+				// TODO 64bit fix
+				if (copy_from_user
+				    (p->virt, (void __user *)(unsigned long)sg[i].addr_bus,
+				     sg_size)) {
+					printk(KERN_DEBUG
+					       "%s: Could not copy SG buf %d FROM user\n",
+					       c->name, i);
+					rcode = -EFAULT;
+					goto cleanup;
+				}
+			}
+			//TODO 64bit fix
+			sg[i].addr_bus = (u32) p->phys;
+		}
+	}
+
+	rcode = i2o_msg_post_wait(c, m, 60);
+	if (rcode)
+		goto cleanup;
+
+	if (sg_offset) {
+		u32 msg[128];
+		/* Copy back the Scatter Gather buffers back to user space */
+		u32 j;
+		// TODO 64bit fix
+		struct sg_simple_element *sg;
+		int sg_size;
+
+		// re-acquire the original message to handle correctly the sg copy operation
+		memset(&msg, 0, MSG_FRAME_SIZE * 4);
+		// get user msg size in u32s
+		if (get_user(size, &user_msg[0])) {
+			rcode = -EFAULT;
+			goto cleanup;
+		}
+		size = size >> 16;
+		size *= 4;
+		/* Copy in the user's I2O command */
+		if (copy_from_user(msg, user_msg, size)) {
+			rcode = -EFAULT;
+			goto cleanup;
+		}
+		sg_count =
+		    (size - sg_offset * 4) / sizeof(struct sg_simple_element);
+
+		// TODO 64bit fix
+		sg = (struct sg_simple_element *)(msg + sg_offset);
+		for (j = 0; j < sg_count; j++) {
+			/* Copy out the SG list to user's buffer if necessary */
+			if (!
+			    (sg[j].
+			     flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
+				sg_size = sg[j].flag_count & 0xffffff;
+				// TODO 64bit fix
+				if (copy_to_user
+				    ((void __user *)(u64) sg[j].addr_bus,
+				     sg_list[j].virt, sg_size)) {
+					printk(KERN_WARNING
+					       "%s: Could not copy %p TO user %x\n",
+					       c->name, sg_list[j].virt,
+					       sg[j].addr_bus);
+					rcode = -EFAULT;
+					goto cleanup;
+				}
+			}
+		}
+	}
+
+	/* Copy back the reply to user space */
+	if (reply_size) {
+		// we wrote our own values for context - now restore the user supplied ones
+		if (copy_from_user(reply + 2, user_msg + 2, sizeof(u32) * 2)) {
+			printk(KERN_WARNING
+			       "%s: Could not copy message context FROM user\n",
+			       c->name);
+			rcode = -EFAULT;
+		}
+		if (copy_to_user(user_reply, reply, reply_size)) {
+			printk(KERN_WARNING
+			       "%s: Could not copy reply TO user\n", c->name);
+			rcode = -EFAULT;
+		}
+	}
+
+      cleanup:
+	kfree(reply);
+	return rcode;
+}
+
+#else
+
+static int i2o_cfg_passthru(unsigned long arg)
+{
+	struct i2o_cmd_passthru __user *cmd =
+	    (struct i2o_cmd_passthru __user *)arg;
+	struct i2o_controller *c;
+	u32 __user *user_msg;
+	u32 *reply = NULL;
+	u32 __user *user_reply = NULL;
+	u32 size = 0;
+	u32 reply_size = 0;
+	u32 rcode = 0;
+	void *sg_list[SG_TABLESIZE];
+	u32 sg_offset = 0;
+	u32 sg_count = 0;
+	int sg_index = 0;
+	u32 i = 0;
+	void *p = NULL;
+	i2o_status_block *sb;
+	struct i2o_message __iomem *msg;
+	u32 m;
+	unsigned int iop;
+
+	if (get_user(iop, &cmd->iop) || get_user(user_msg, &cmd->msg))
+		return -EFAULT;
+
+	c = i2o_find_iop(iop);
+	if (!c) {
+		osm_warn("controller %d not found\n", iop);
+		return -ENXIO;
+	}
+
+	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+
+	sb = c->status_block.virt;
+
+	if (get_user(size, &user_msg[0]))
+		return -EFAULT;
+	size = size >> 16;
+
+	if (size > sb->inbound_frame_size) {
+		osm_warn("size of message > inbound_frame_size");
+		return -EFAULT;
+	}
+
+	user_reply = &user_msg[size];
+
+	size <<= 2;		// Convert to bytes
+
+	/* Copy in the user's I2O command */
+	if (copy_from_user(msg, user_msg, size))
+		return -EFAULT;
+
+	if (get_user(reply_size, &user_reply[0]) < 0)
+		return -EFAULT;
+
+	reply_size >>= 16;
+	reply_size <<= 2;
+
+	reply = kmalloc(reply_size, GFP_KERNEL);
+	if (!reply) {
+		printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
+		       c->name);
+		return -ENOMEM;
+	}
+	memset(reply, 0, reply_size);
+
+	sg_offset = (msg->u.head[0] >> 4) & 0x0f;
+
+	writel(i2o_config_driver.context, &msg->u.s.icntxt);
+	writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
+
+	memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
+	if (sg_offset) {
+		struct sg_simple_element *sg;
+
+		if (sg_offset * 4 >= size) {
+			rcode = -EFAULT;
+			goto cleanup;
+		}
+		// TODO 64bit fix
+		sg = (struct sg_simple_element *)((&msg->u.head[0]) +
+						  sg_offset);
+		sg_count =
+		    (size - sg_offset * 4) / sizeof(struct sg_simple_element);
+		if (sg_count > SG_TABLESIZE) {
+			printk(KERN_DEBUG "%s:IOCTL SG List too large (%u)\n",
+			       c->name, sg_count);
+			kfree(reply);
+			return -EINVAL;
+		}
+
+		for (i = 0; i < sg_count; i++) {
+			int sg_size;
+
+			if (!(sg[i].flag_count & 0x10000000
+			      /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
+				printk(KERN_DEBUG
+				       "%s:Bad SG element %d - not simple (%x)\n",
+				       c->name, i, sg[i].flag_count);
+				rcode = -EINVAL;
+				goto cleanup;
+			}
+			sg_size = sg[i].flag_count & 0xffffff;
+			/* Allocate memory for the transfer */
+			p = kmalloc(sg_size, GFP_KERNEL);
+			if (!p) {
+				printk(KERN_DEBUG
+				       "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
+				       c->name, sg_size, i, sg_count);
+				rcode = -ENOMEM;
+				goto cleanup;
+			}
+			sg_list[sg_index++] = p;	// sglist indexed with input frame, not our internal frame.
+			/* Copy in the user's SG buffer if necessary */
+			if (sg[i].
+			    flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
+				// TODO 64bit fix
+				if (copy_from_user
+				    (p, (void __user *)sg[i].addr_bus,
+				     sg_size)) {
+					printk(KERN_DEBUG
+					       "%s: Could not copy SG buf %d FROM user\n",
+					       c->name, i);
+					rcode = -EFAULT;
+					goto cleanup;
+				}
+			}
+			//TODO 64bit fix
+			sg[i].addr_bus = virt_to_bus(p);
+		}
+	}
+
+	rcode = i2o_msg_post_wait(c, m, 60);
+	if (rcode)
+		goto cleanup;
+
+	if (sg_offset) {
+		u32 msg[128];
+		/* Copy back the Scatter Gather buffers back to user space */
+		u32 j;
+		// TODO 64bit fix
+		struct sg_simple_element *sg;
+		int sg_size;
+
+		// re-acquire the original message to handle correctly the sg copy operation
+		memset(&msg, 0, MSG_FRAME_SIZE * 4);
+		// get user msg size in u32s
+		if (get_user(size, &user_msg[0])) {
+			rcode = -EFAULT;
+			goto cleanup;
+		}
+		size = size >> 16;
+		size *= 4;
+		/* Copy in the user's I2O command */
+		if (copy_from_user(msg, user_msg, size)) {
+			rcode = -EFAULT;
+			goto cleanup;
+		}
+		sg_count =
+		    (size - sg_offset * 4) / sizeof(struct sg_simple_element);
+
+		// TODO 64bit fix
+		sg = (struct sg_simple_element *)(msg + sg_offset);
+		for (j = 0; j < sg_count; j++) {
+			/* Copy out the SG list to user's buffer if necessary */
+			if (!
+			    (sg[j].
+			     flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
+				sg_size = sg[j].flag_count & 0xffffff;
+				// TODO 64bit fix
+				if (copy_to_user
+				    ((void __user *)sg[j].addr_bus, sg_list[j],
+				     sg_size)) {
+					printk(KERN_WARNING
+					       "%s: Could not copy %p TO user %x\n",
+					       c->name, sg_list[j],
+					       sg[j].addr_bus);
+					rcode = -EFAULT;
+					goto cleanup;
+				}
+			}
+		}
+	}
+
+	/* Copy back the reply to user space */
+	if (reply_size) {
+		// we wrote our own values for context - now restore the user supplied ones
+		if (copy_from_user(reply + 2, user_msg + 2, sizeof(u32) * 2)) {
+			printk(KERN_WARNING
+			       "%s: Could not copy message context FROM user\n",
+			       c->name);
+			rcode = -EFAULT;
+		}
+		if (copy_to_user(user_reply, reply, reply_size)) {
+			printk(KERN_WARNING
+			       "%s: Could not copy reply TO user\n", c->name);
+			rcode = -EFAULT;
+		}
+	}
+
+      cleanup:
+	kfree(reply);
+	return rcode;
+}
+#endif
+
+/*
+ * IOCTL Handler
+ */
+static int i2o_cfg_ioctl(struct inode *inode, struct file *fp, unsigned int cmd,
+			 unsigned long arg)
+{
+	int ret;
+
+	switch (cmd) {
+	case I2OGETIOPS:
+		ret = i2o_cfg_getiops(arg);
+		break;
+
+	case I2OHRTGET:
+		ret = i2o_cfg_gethrt(arg);
+		break;
+
+	case I2OLCTGET:
+		ret = i2o_cfg_getlct(arg);
+		break;
+
+	case I2OPARMSET:
+		ret = i2o_cfg_parms(arg, I2OPARMSET);
+		break;
+
+	case I2OPARMGET:
+		ret = i2o_cfg_parms(arg, I2OPARMGET);
+		break;
+
+	case I2OSWDL:
+		ret = i2o_cfg_swdl(arg);
+		break;
+
+	case I2OSWUL:
+		ret = i2o_cfg_swul(arg);
+		break;
+
+	case I2OSWDEL:
+		ret = i2o_cfg_swdel(arg);
+		break;
+
+	case I2OVALIDATE:
+		ret = i2o_cfg_validate(arg);
+		break;
+
+	case I2OEVTREG:
+		ret = i2o_cfg_evt_reg(arg, fp);
+		break;
+
+	case I2OEVTGET:
+		ret = i2o_cfg_evt_get(arg, fp);
+		break;
+
+#ifndef CONFIG_COMPAT
+	case I2OPASSTHRU:
+		ret = i2o_cfg_passthru(arg);
+		break;
+#endif
+
+	default:
+		osm_debug("unknown ioctl called!\n");
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static int cfg_open(struct inode *inode, struct file *file)
+{
+	struct i2o_cfg_info *tmp =
+	    (struct i2o_cfg_info *)kmalloc(sizeof(struct i2o_cfg_info),
+					   GFP_KERNEL);
+	unsigned long flags;
+
+	if (!tmp)
+		return -ENOMEM;
+
+	file->private_data = (void *)(i2o_cfg_info_id++);
+	tmp->fp = file;
+	tmp->fasync = NULL;
+	tmp->q_id = (ulong) file->private_data;
+	tmp->q_len = 0;
+	tmp->q_in = 0;
+	tmp->q_out = 0;
+	tmp->q_lost = 0;
+	tmp->next = open_files;
+
+	spin_lock_irqsave(&i2o_config_lock, flags);
+	open_files = tmp;
+	spin_unlock_irqrestore(&i2o_config_lock, flags);
+
+	return 0;
+}
+
+static int cfg_fasync(int fd, struct file *fp, int on)
+{
+	ulong id = (ulong) fp->private_data;
+	struct i2o_cfg_info *p;
+
+	for (p = open_files; p; p = p->next)
+		if (p->q_id == id)
+			break;
+
+	if (!p)
+		return -EBADF;
+
+	return fasync_helper(fd, fp, on, &p->fasync);
+}
+
+static int cfg_release(struct inode *inode, struct file *file)
+{
+	ulong id = (ulong) file->private_data;
+	struct i2o_cfg_info *p1, *p2;
+	unsigned long flags;
+
+	lock_kernel();
+	p1 = p2 = NULL;
+
+	spin_lock_irqsave(&i2o_config_lock, flags);
+	for (p1 = open_files; p1;) {
+		if (p1->q_id == id) {
+
+			if (p1->fasync)
+				cfg_fasync(-1, file, 0);
+			if (p2)
+				p2->next = p1->next;
+			else
+				open_files = p1->next;
+
+			kfree(p1);
+			break;
+		}
+		p2 = p1;
+		p1 = p1->next;
+	}
+	spin_unlock_irqrestore(&i2o_config_lock, flags);
+	unlock_kernel();
+
+	return 0;
+}
+
+static struct file_operations config_fops = {
+	.owner = THIS_MODULE,
+	.llseek = no_llseek,
+	.ioctl = i2o_cfg_ioctl,
+	.open = cfg_open,
+	.release = cfg_release,
+	.fasync = cfg_fasync,
+};
+
+static struct miscdevice i2o_miscdev = {
+	I2O_MINOR,
+	"i2octl",
+	&config_fops
+};
+
+static int __init i2o_config_init(void)
+{
+	printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
+
+	spin_lock_init(&i2o_config_lock);
+
+	if (misc_register(&i2o_miscdev) < 0) {
+		osm_err("can't register device.\n");
+		return -EBUSY;
+	}
+	/*
+	 *      Install our handler
+	 */
+	if (i2o_driver_register(&i2o_config_driver)) {
+		osm_err("handler register failed.\n");
+		misc_deregister(&i2o_miscdev);
+		return -EBUSY;
+	}
+#ifdef CONFIG_COMPAT
+	register_ioctl32_conversion(I2OPASSTHRU32, i2o_cfg_passthru32);
+	register_ioctl32_conversion(I2OGETIOPS, (void *)sys_ioctl);
+#endif
+	return 0;
+}
+
+static void i2o_config_exit(void)
+{
+#ifdef CONFIG_COMPAT
+	unregister_ioctl32_conversion(I2OPASSTHRU32);
+	unregister_ioctl32_conversion(I2OGETIOPS);
+#endif
+	misc_deregister(&i2o_miscdev);
+	i2o_driver_unregister(&i2o_config_driver);
+}
+
+MODULE_AUTHOR("Red Hat Software");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(OSM_DESCRIPTION);
+MODULE_VERSION(OSM_VERSION);
+
+module_init(i2o_config_init);
+module_exit(i2o_config_exit);