+++ /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