--- /dev/null
+/*
+ * 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@lxorguk.ukuu.org.uk>:
+ * 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/miscdevice.h>
+#include <linux/mutex.h>
+#include <linux/compat.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#include "core.h"
+
+#define SG_TABLESIZE 30
+
+static DEFINE_MUTEX(i2o_cfg_mutex);
+static long i2o_cfg_ioctl(struct file *, unsigned int, unsigned long);
+
+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;
+
+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);
+
+ if (put_user(len, kcmd.reslen))
+ ret = -EFAULT;
+ else if (len > reslen)
+ ret = -ENOBUFS;
+ else 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;
+ if (put_user(len, kcmd.reslen))
+ ret = -EFAULT;
+ else 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;
+
+ /*
+ * Stop users being able to try and allocate arbitrary amounts
+ * of DMA space. 64K is way more than sufficient for this.
+ */
+ if (kcmd.oplen > 65536)
+ return -EMSGSIZE;
+
+ ops = memdup_user(kcmd.opbuf, kcmd.oplen);
+ if (IS_ERR(ops))
+ return PTR_ERR(ops);
+
+ /*
+ * It's possible to have a _very_ large table
+ * and that the user asks for all of it at once...
+ */
+ res = 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;
+ }
+
+ if (put_user(len, kcmd.reslen))
+ ret = -EFAULT;
+ else 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 *msg;
+ 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;
+
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+
+ if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize)) {
+ i2o_msg_nop(c, msg);
+ return -ENOMEM;
+ }
+
+ if (__copy_from_user(buffer.virt, kxfer.buf, fragsize)) {
+ i2o_msg_nop(c, msg);
+ i2o_dma_free(&c->pdev->dev, &buffer);
+ return -EFAULT;
+ }
+
+ msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 |
+ ADAPTER_TID);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
+ msg->body[0] =
+ cpu_to_le32((((u32) kxfer.flags) << 24) | (((u32) kxfer.
+ sw_type) << 16) |
+ (((u32) maxfrag) << 8) | (((u32) curfrag)));
+ msg->body[1] = cpu_to_le32(swlen);
+ msg->body[2] = cpu_to_le32(kxfer.sw_id);
+ msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
+ msg->body[4] = cpu_to_le32(buffer.phys);
+
+ osm_debug("swdl frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
+ status = i2o_msg_post_wait_mem(c, msg, 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 *msg;
+ 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)))
+ 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)
+ return -EFAULT;
+
+ c = i2o_find_iop(kxfer.iop);
+ if (!c)
+ return -ENXIO;
+
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+
+ if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize)) {
+ i2o_msg_nop(c, msg);
+ return -ENOMEM;
+ }
+
+ msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
+ msg->body[0] =
+ cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.
+ sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag);
+ msg->body[1] = cpu_to_le32(swlen);
+ msg->body[2] = cpu_to_le32(kxfer.sw_id);
+ msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
+ msg->body[4] = cpu_to_le32(buffer.phys);
+
+ osm_debug("swul frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
+ status = i2o_msg_post_wait_mem(c, msg, 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;
+}
+
+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 *msg;
+ 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;
+
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+
+ msg->u.head[0] = cpu_to_le32(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
+ msg->body[0] =
+ cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16);
+ msg->body[1] = cpu_to_le32(swlen);
+ msg->body[2] = cpu_to_le32(kxfer.sw_id);
+
+ token = i2o_msg_post_wait(c, msg, 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 *msg;
+ struct i2o_controller *c;
+
+ c = i2o_find_iop(iop);
+ if (!c)
+ return -ENXIO;
+
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+
+ msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
+
+ token = i2o_msg_post_wait(c, msg, 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 *msg;
+ 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;
+
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+
+ msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 |
+ kdesc.tid);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(i2o_cntxt_list_add(c, fp->private_data));
+ msg->body[0] = cpu_to_le32(kdesc.evt_mask);
+
+ i2o_msg_post(c, msg);
+
+ 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(struct file *file, unsigned cmnd,
+ unsigned long arg)
+{
+ 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;
+ u32 sg_index = 0;
+ i2o_status_block *sb;
+ struct i2o_message *msg;
+ 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;
+ }
+
+ 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
+
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+
+ rcode = -EFAULT;
+ /* Copy in the user's I2O command */
+ if (copy_from_user(msg, user_msg, size)) {
+ osm_warn("unable to copy user message\n");
+ goto out;
+ }
+ i2o_dump_message(msg);
+
+ if (get_user(reply_size, &user_reply[0]) < 0)
+ goto out;
+
+ reply_size >>= 16;
+ reply_size <<= 2;
+
+ rcode = -ENOMEM;
+ reply = kzalloc(reply_size, GFP_KERNEL);
+ if (!reply) {
+ printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
+ c->name);
+ goto out;
+ }
+
+ sg_offset = (msg->u.head[0] >> 4) & 0x0f;
+
+ 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);
+ rcode = -EINVAL;
+ goto cleanup;
+ }
+
+ 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[sg_index]);
+ /* Allocate memory for the transfer */
+ if (i2o_dma_alloc(&c->pdev->dev, p, sg_size)) {
+ 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 sg_list_cleanup;
+ }
+ sg_index++;
+ /* 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 sg_list_cleanup;
+ }
+ }
+ //TODO 64bit fix
+ sg[i].addr_bus = (u32) p->phys;
+ }
+ }
+
+ rcode = i2o_msg_post_wait(c, msg, 60);
+ msg = NULL;
+ if (rcode) {
+ reply[4] = ((u32) rcode) << 24;
+ goto sg_list_cleanup;
+ }
+
+ if (sg_offset) {
+ u32 rmsg[I2O_OUTBOUND_MSG_FRAME_SIZE];
+ /* 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(&rmsg, 0, I2O_OUTBOUND_MSG_FRAME_SIZE * 4);
+ // get user msg size in u32s
+ if (get_user(size, &user_msg[0])) {
+ rcode = -EFAULT;
+ goto sg_list_cleanup;
+ }
+ size = size >> 16;
+ size *= 4;
+ if (size > sizeof(rmsg)) {
+ rcode = -EINVAL;
+ goto sg_list_cleanup;
+ }
+
+ /* Copy in the user's I2O command */
+ if (copy_from_user(rmsg, user_msg, size)) {
+ rcode = -EFAULT;
+ goto sg_list_cleanup;
+ }
+ sg_count =
+ (size - sg_offset * 4) / sizeof(struct sg_simple_element);
+
+ // TODO 64bit fix
+ sg = (struct sg_simple_element *)(rmsg + 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 sg_list_cleanup;
+ }
+ }
+ }
+ }
+
+sg_list_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;
+ }
+ }
+ for (i = 0; i < sg_index; i++)
+ i2o_dma_free(&c->pdev->dev, &sg_list[i]);
+
+cleanup:
+ kfree(reply);
+out:
+ if (msg)
+ i2o_msg_nop(c, msg);
+ return rcode;
+}
+
+static long i2o_cfg_compat_ioctl(struct file *file, unsigned cmd,
+ unsigned long arg)
+{
+ int ret;
+ switch (cmd) {
+ case I2OGETIOPS:
+ ret = i2o_cfg_ioctl(file, cmd, arg);
+ break;
+ case I2OPASSTHRU32:
+ mutex_lock(&i2o_cfg_mutex);
+ ret = i2o_cfg_passthru32(file, cmd, arg);
+ mutex_unlock(&i2o_cfg_mutex);
+ break;
+ default:
+ ret = -ENOIOCTLCMD;
+ break;
+ }
+ return ret;
+}
+
+#endif
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+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;
+ struct i2o_dma sg_list[SG_TABLESIZE];
+ u32 sg_offset = 0;
+ u32 sg_count = 0;
+ int sg_index = 0;
+ u32 i = 0;
+ i2o_status_block *sb;
+ struct i2o_message *msg;
+ 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;
+ }
+
+ 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
+
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
+
+ rcode = -EFAULT;
+ /* Copy in the user's I2O command */
+ if (copy_from_user(msg, user_msg, size))
+ goto out;
+
+ if (get_user(reply_size, &user_reply[0]) < 0)
+ goto out;
+
+ reply_size >>= 16;
+ reply_size <<= 2;
+
+ reply = kzalloc(reply_size, GFP_KERNEL);
+ if (!reply) {
+ printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
+ c->name);
+ rcode = -ENOMEM;
+ goto out;
+ }
+
+ sg_offset = (msg->u.head[0] >> 4) & 0x0f;
+
+ memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
+ if (sg_offset) {
+ struct sg_simple_element *sg;
+ struct i2o_dma *p;
+
+ 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);
+ rcode = -EINVAL;
+ goto cleanup;
+ }
+
+ 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 sg_list_cleanup;
+ }
+ sg_size = sg[i].flag_count & 0xffffff;
+ p = &(sg_list[sg_index]);
+ if (i2o_dma_alloc(&c->pdev->dev, p, sg_size)) {
+ /* Allocate memory for the transfer */
+ 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 sg_list_cleanup;
+ }
+ sg_index++;
+ /* 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 *)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 sg_list_cleanup;
+ }
+ }
+ sg[i].addr_bus = p->phys;
+ }
+ }
+
+ rcode = i2o_msg_post_wait(c, msg, 60);
+ msg = NULL;
+ if (rcode) {
+ reply[4] = ((u32) rcode) << 24;
+ goto sg_list_cleanup;
+ }
+
+ if (sg_offset) {
+ u32 rmsg[I2O_OUTBOUND_MSG_FRAME_SIZE];
+ /* 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(&rmsg, 0, I2O_OUTBOUND_MSG_FRAME_SIZE * 4);
+ // get user msg size in u32s
+ if (get_user(size, &user_msg[0])) {
+ rcode = -EFAULT;
+ goto sg_list_cleanup;
+ }
+ size = size >> 16;
+ size *= 4;
+ if (size > sizeof(rmsg)) {
+ rcode = -EFAULT;
+ goto sg_list_cleanup;
+ }
+
+ /* Copy in the user's I2O command */
+ if (copy_from_user(rmsg, user_msg, size)) {
+ rcode = -EFAULT;
+ goto sg_list_cleanup;
+ }
+ sg_count =
+ (size - sg_offset * 4) / sizeof(struct sg_simple_element);
+
+ // TODO 64bit fix
+ sg = (struct sg_simple_element *)(rmsg + 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].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 sg_list_cleanup;
+ }
+ }
+ }
+ }
+
+sg_list_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;
+ }
+ }
+
+ for (i = 0; i < sg_index; i++)
+ i2o_dma_free(&c->pdev->dev, &sg_list[i]);
+
+cleanup:
+ kfree(reply);
+out:
+ if (msg)
+ i2o_msg_nop(c, msg);
+ return rcode;
+}
+#endif
+
+/*
+ * IOCTL Handler
+ */
+static long i2o_cfg_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
+{
+ int ret;
+
+ mutex_lock(&i2o_cfg_mutex);
+ 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;
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ case I2OPASSTHRU:
+ ret = i2o_cfg_passthru(arg);
+ break;
+#endif
+
+ default:
+ osm_debug("unknown ioctl called!\n");
+ ret = -EINVAL;
+ }
+ mutex_unlock(&i2o_cfg_mutex);
+ return ret;
+}
+
+static int cfg_open(struct inode *inode, struct file *file)
+{
+ struct i2o_cfg_info *tmp = kmalloc(sizeof(struct i2o_cfg_info),
+ GFP_KERNEL);
+ unsigned long flags;
+
+ if (!tmp)
+ return -ENOMEM;
+
+ mutex_lock(&i2o_cfg_mutex);
+ 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);
+ mutex_unlock(&i2o_cfg_mutex);
+
+ return 0;
+}
+
+static int cfg_fasync(int fd, struct file *fp, int on)
+{
+ ulong id = (ulong) fp->private_data;
+ struct i2o_cfg_info *p;
+ int ret = -EBADF;
+
+ mutex_lock(&i2o_cfg_mutex);
+ for (p = open_files; p; p = p->next)
+ if (p->q_id == id)
+ break;
+
+ if (p)
+ ret = fasync_helper(fd, fp, on, &p->fasync);
+ mutex_unlock(&i2o_cfg_mutex);
+ return ret;
+}
+
+static int cfg_release(struct inode *inode, struct file *file)
+{
+ ulong id = (ulong) file->private_data;
+ struct i2o_cfg_info *p, **q;
+ unsigned long flags;
+
+ mutex_lock(&i2o_cfg_mutex);
+ spin_lock_irqsave(&i2o_config_lock, flags);
+ for (q = &open_files; (p = *q) != NULL; q = &p->next) {
+ if (p->q_id == id) {
+ *q = p->next;
+ kfree(p);
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&i2o_config_lock, flags);
+ mutex_unlock(&i2o_cfg_mutex);
+
+ return 0;
+}
+
+static const struct file_operations config_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .unlocked_ioctl = i2o_cfg_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = i2o_cfg_compat_ioctl,
+#endif
+ .open = cfg_open,
+ .release = cfg_release,
+ .fasync = cfg_fasync,
+};
+
+static struct miscdevice i2o_miscdev = {
+ I2O_MINOR,
+ "i2octl",
+ &config_fops
+};
+
+static int __init i2o_config_old_init(void)
+{
+ spin_lock_init(&i2o_config_lock);
+
+ if (misc_register(&i2o_miscdev) < 0) {
+ osm_err("can't register device.\n");
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static void i2o_config_old_exit(void)
+{
+ misc_deregister(&i2o_miscdev);
+}
+
+MODULE_AUTHOR("Red Hat Software");
Code Review / kvmfornfv.git / blobdiff