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);