1146 строки
26 KiB
C
1146 строки
26 KiB
C
/*
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* I2O Configuration Interface Driver
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*
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* (C) Copyright 1999-2002 Red Hat
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*
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* Written by Alan Cox, Building Number Three Ltd
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*
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* Fixes/additions:
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* Deepak Saxena (04/20/1999):
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* Added basic ioctl() support
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* Deepak Saxena (06/07/1999):
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* Added software download ioctl (still testing)
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* Auvo Häkkinen (09/10/1999):
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* Changes to i2o_cfg_reply(), ioctl_parms()
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* Added ioct_validate()
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* Taneli Vähäkangas (09/30/1999):
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* Fixed ioctl_swdl()
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* Taneli Vähäkangas (10/04/1999):
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* Changed ioctl_swdl(), implemented ioctl_swul() and ioctl_swdel()
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* Deepak Saxena (11/18/1999):
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* Added event managmenet support
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* Alan Cox <alan@redhat.com>:
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* 2.4 rewrite ported to 2.5
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* Markus Lidel <Markus.Lidel@shadowconnect.com>:
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* Added pass-thru support for Adaptec's raidutils
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/miscdevice.h>
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#include <linux/smp_lock.h>
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#include <linux/compat.h>
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#include <asm/uaccess.h>
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#define SG_TABLESIZE 30
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extern int i2o_parm_issue(struct i2o_device *, int, void *, int, void *, int);
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static int i2o_cfg_ioctl(struct inode *, struct file *, unsigned int,
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unsigned long);
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static spinlock_t i2o_config_lock;
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#define MODINC(x,y) ((x) = ((x) + 1) % (y))
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struct sg_simple_element {
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u32 flag_count;
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u32 addr_bus;
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};
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struct i2o_cfg_info {
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struct file *fp;
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struct fasync_struct *fasync;
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struct i2o_evt_info event_q[I2O_EVT_Q_LEN];
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u16 q_in; // Queue head index
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u16 q_out; // Queue tail index
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u16 q_len; // Queue length
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u16 q_lost; // Number of lost events
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ulong q_id; // Event queue ID...used as tx_context
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struct i2o_cfg_info *next;
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};
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static struct i2o_cfg_info *open_files = NULL;
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static ulong i2o_cfg_info_id = 0;
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static int i2o_cfg_getiops(unsigned long arg)
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{
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struct i2o_controller *c;
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u8 __user *user_iop_table = (void __user *)arg;
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u8 tmp[MAX_I2O_CONTROLLERS];
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int ret = 0;
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memset(tmp, 0, MAX_I2O_CONTROLLERS);
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list_for_each_entry(c, &i2o_controllers, list)
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tmp[c->unit] = 1;
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if (copy_to_user(user_iop_table, tmp, MAX_I2O_CONTROLLERS))
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ret = -EFAULT;
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return ret;
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};
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static int i2o_cfg_gethrt(unsigned long arg)
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{
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struct i2o_controller *c;
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struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
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struct i2o_cmd_hrtlct kcmd;
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i2o_hrt *hrt;
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int len;
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u32 reslen;
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int ret = 0;
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if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
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return -EFAULT;
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if (get_user(reslen, kcmd.reslen) < 0)
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return -EFAULT;
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if (kcmd.resbuf == NULL)
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return -EFAULT;
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c = i2o_find_iop(kcmd.iop);
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if (!c)
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return -ENXIO;
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hrt = (i2o_hrt *) c->hrt.virt;
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len = 8 + ((hrt->entry_len * hrt->num_entries) << 2);
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/* We did a get user...so assuming mem is ok...is this bad? */
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put_user(len, kcmd.reslen);
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if (len > reslen)
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ret = -ENOBUFS;
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if (copy_to_user(kcmd.resbuf, (void *)hrt, len))
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ret = -EFAULT;
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return ret;
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};
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static int i2o_cfg_getlct(unsigned long arg)
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{
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struct i2o_controller *c;
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struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
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struct i2o_cmd_hrtlct kcmd;
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i2o_lct *lct;
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int len;
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int ret = 0;
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u32 reslen;
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if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
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return -EFAULT;
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if (get_user(reslen, kcmd.reslen) < 0)
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return -EFAULT;
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if (kcmd.resbuf == NULL)
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return -EFAULT;
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c = i2o_find_iop(kcmd.iop);
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if (!c)
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return -ENXIO;
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lct = (i2o_lct *) c->lct;
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len = (unsigned int)lct->table_size << 2;
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put_user(len, kcmd.reslen);
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if (len > reslen)
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ret = -ENOBUFS;
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else if (copy_to_user(kcmd.resbuf, lct, len))
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ret = -EFAULT;
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return ret;
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};
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static int i2o_cfg_parms(unsigned long arg, unsigned int type)
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{
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int ret = 0;
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struct i2o_controller *c;
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struct i2o_device *dev;
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struct i2o_cmd_psetget __user *cmd =
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(struct i2o_cmd_psetget __user *)arg;
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struct i2o_cmd_psetget kcmd;
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u32 reslen;
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u8 *ops;
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u8 *res;
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int len = 0;
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u32 i2o_cmd = (type == I2OPARMGET ?
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I2O_CMD_UTIL_PARAMS_GET : I2O_CMD_UTIL_PARAMS_SET);
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if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_psetget)))
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return -EFAULT;
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if (get_user(reslen, kcmd.reslen))
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return -EFAULT;
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c = i2o_find_iop(kcmd.iop);
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if (!c)
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return -ENXIO;
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dev = i2o_iop_find_device(c, kcmd.tid);
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if (!dev)
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return -ENXIO;
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ops = (u8 *) kmalloc(kcmd.oplen, GFP_KERNEL);
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if (!ops)
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return -ENOMEM;
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if (copy_from_user(ops, kcmd.opbuf, kcmd.oplen)) {
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kfree(ops);
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return -EFAULT;
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}
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/*
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* It's possible to have a _very_ large table
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* and that the user asks for all of it at once...
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*/
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res = (u8 *) kmalloc(65536, GFP_KERNEL);
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if (!res) {
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kfree(ops);
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return -ENOMEM;
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}
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len = i2o_parm_issue(dev, i2o_cmd, ops, kcmd.oplen, res, 65536);
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kfree(ops);
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if (len < 0) {
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kfree(res);
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return -EAGAIN;
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}
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put_user(len, kcmd.reslen);
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if (len > reslen)
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ret = -ENOBUFS;
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else if (copy_to_user(kcmd.resbuf, res, len))
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ret = -EFAULT;
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kfree(res);
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return ret;
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};
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static int i2o_cfg_swdl(unsigned long arg)
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{
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struct i2o_sw_xfer kxfer;
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struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
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unsigned char maxfrag = 0, curfrag = 1;
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struct i2o_dma buffer;
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struct i2o_message *msg;
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unsigned int status = 0, swlen = 0, fragsize = 8192;
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struct i2o_controller *c;
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if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
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return -EFAULT;
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if (get_user(swlen, kxfer.swlen) < 0)
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return -EFAULT;
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if (get_user(maxfrag, kxfer.maxfrag) < 0)
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return -EFAULT;
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if (get_user(curfrag, kxfer.curfrag) < 0)
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return -EFAULT;
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if (curfrag == maxfrag)
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fragsize = swlen - (maxfrag - 1) * 8192;
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if (!kxfer.buf || !access_ok(VERIFY_READ, kxfer.buf, fragsize))
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return -EFAULT;
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c = i2o_find_iop(kxfer.iop);
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if (!c)
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return -ENXIO;
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msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
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if (IS_ERR(msg))
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return PTR_ERR(msg);
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if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
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i2o_msg_nop(c, msg);
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return -ENOMEM;
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}
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__copy_from_user(buffer.virt, kxfer.buf, fragsize);
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msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
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msg->u.head[1] =
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cpu_to_le32(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 |
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ADAPTER_TID);
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msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
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msg->u.head[3] = cpu_to_le32(0);
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msg->body[0] =
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cpu_to_le32((((u32) kxfer.flags) << 24) | (((u32) kxfer.
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sw_type) << 16) |
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(((u32) maxfrag) << 8) | (((u32) curfrag)));
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msg->body[1] = cpu_to_le32(swlen);
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msg->body[2] = cpu_to_le32(kxfer.sw_id);
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msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
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msg->body[4] = cpu_to_le32(buffer.phys);
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osm_debug("swdl frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
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status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
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if (status != -ETIMEDOUT)
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i2o_dma_free(&c->pdev->dev, &buffer);
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if (status != I2O_POST_WAIT_OK) {
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// it fails if you try and send frags out of order
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// and for some yet unknown reasons too
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osm_info("swdl failed, DetailedStatus = %d\n", status);
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return status;
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}
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return 0;
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};
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static int i2o_cfg_swul(unsigned long arg)
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{
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struct i2o_sw_xfer kxfer;
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struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
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unsigned char maxfrag = 0, curfrag = 1;
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struct i2o_dma buffer;
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struct i2o_message *msg;
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unsigned int status = 0, swlen = 0, fragsize = 8192;
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struct i2o_controller *c;
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int ret = 0;
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if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
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goto return_fault;
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if (get_user(swlen, kxfer.swlen) < 0)
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goto return_fault;
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if (get_user(maxfrag, kxfer.maxfrag) < 0)
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goto return_fault;
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if (get_user(curfrag, kxfer.curfrag) < 0)
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goto return_fault;
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if (curfrag == maxfrag)
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fragsize = swlen - (maxfrag - 1) * 8192;
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if (!kxfer.buf)
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goto return_fault;
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c = i2o_find_iop(kxfer.iop);
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if (!c)
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return -ENXIO;
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msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
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if (IS_ERR(msg))
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return PTR_ERR(msg);
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if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
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i2o_msg_nop(c, msg);
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return -ENOMEM;
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}
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msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
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msg->u.head[1] =
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cpu_to_le32(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID);
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msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
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msg->u.head[3] = cpu_to_le32(0);
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msg->body[0] =
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cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.
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sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag);
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msg->body[1] = cpu_to_le32(swlen);
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msg->body[2] = cpu_to_le32(kxfer.sw_id);
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msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
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msg->body[4] = cpu_to_le32(buffer.phys);
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osm_debug("swul frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
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status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
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if (status != I2O_POST_WAIT_OK) {
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if (status != -ETIMEDOUT)
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i2o_dma_free(&c->pdev->dev, &buffer);
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osm_info("swul failed, DetailedStatus = %d\n", status);
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return status;
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}
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if (copy_to_user(kxfer.buf, buffer.virt, fragsize))
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ret = -EFAULT;
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i2o_dma_free(&c->pdev->dev, &buffer);
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return_ret:
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return ret;
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return_fault:
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ret = -EFAULT;
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goto return_ret;
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};
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static int i2o_cfg_swdel(unsigned long arg)
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{
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struct i2o_controller *c;
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struct i2o_sw_xfer kxfer;
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struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
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struct i2o_message *msg;
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unsigned int swlen;
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int token;
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if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
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return -EFAULT;
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if (get_user(swlen, kxfer.swlen) < 0)
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return -EFAULT;
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c = i2o_find_iop(kxfer.iop);
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if (!c)
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return -ENXIO;
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msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
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if (IS_ERR(msg))
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return PTR_ERR(msg);
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msg->u.head[0] = cpu_to_le32(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0);
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msg->u.head[1] =
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cpu_to_le32(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID);
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msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
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msg->u.head[3] = cpu_to_le32(0);
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msg->body[0] =
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cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16);
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msg->body[1] = cpu_to_le32(swlen);
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msg->body[2] = cpu_to_le32(kxfer.sw_id);
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token = i2o_msg_post_wait(c, msg, 10);
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if (token != I2O_POST_WAIT_OK) {
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osm_info("swdel failed, DetailedStatus = %d\n", token);
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return -ETIMEDOUT;
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}
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return 0;
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};
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static int i2o_cfg_validate(unsigned long arg)
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{
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int token;
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int iop = (int)arg;
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struct i2o_message *msg;
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struct i2o_controller *c;
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c = i2o_find_iop(iop);
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if (!c)
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return -ENXIO;
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msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
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if (IS_ERR(msg))
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return PTR_ERR(msg);
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msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
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msg->u.head[1] =
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cpu_to_le32(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop);
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msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
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msg->u.head[3] = cpu_to_le32(0);
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token = i2o_msg_post_wait(c, msg, 10);
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if (token != I2O_POST_WAIT_OK) {
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osm_info("Can't validate configuration, ErrorStatus = %d\n",
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token);
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return -ETIMEDOUT;
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}
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return 0;
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};
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static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
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{
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struct i2o_message *msg;
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struct i2o_evt_id __user *pdesc = (struct i2o_evt_id __user *)arg;
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struct i2o_evt_id kdesc;
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struct i2o_controller *c;
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struct i2o_device *d;
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if (copy_from_user(&kdesc, pdesc, sizeof(struct i2o_evt_id)))
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return -EFAULT;
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/* IOP exists? */
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c = i2o_find_iop(kdesc.iop);
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if (!c)
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return -ENXIO;
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/* Device exists? */
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d = i2o_iop_find_device(c, kdesc.tid);
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if (!d)
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return -ENODEV;
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msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
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if (IS_ERR(msg))
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return PTR_ERR(msg);
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msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
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msg->u.head[1] =
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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_I2O_EXT_ADAPTEC
|
|
#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;
|
|
}
|
|
|
|
msg = i2o_msg_get_wait(c, 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 = kzalloc(reply_size, GFP_KERNEL);
|
|
if (!reply) {
|
|
printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
|
|
c->name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
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,
|
|
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 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);
|
|
if (rcode) {
|
|
reply[4] = ((u32) rcode) << 24;
|
|
goto sg_list_cleanup;
|
|
}
|
|
|
|
if (sg_offset) {
|
|
u32 msg[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(&msg, 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;
|
|
/* Copy in the user's I2O command */
|
|
if (copy_from_user(msg, 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 *)(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 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;
|
|
goto sg_list_cleanup;
|
|
}
|
|
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);
|
|
return rcode;
|
|
}
|
|
|
|
static long i2o_cfg_compat_ioctl(struct file *file, unsigned cmd,
|
|
unsigned long arg)
|
|
{
|
|
int ret;
|
|
lock_kernel();
|
|
switch (cmd) {
|
|
case I2OGETIOPS:
|
|
ret = i2o_cfg_ioctl(NULL, file, cmd, arg);
|
|
break;
|
|
case I2OPASSTHRU32:
|
|
ret = i2o_cfg_passthru32(file, cmd, arg);
|
|
break;
|
|
default:
|
|
ret = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
unlock_kernel();
|
|
return ret;
|
|
}
|
|
|
|
#endif
|
|
|
|
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 *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;
|
|
}
|
|
|
|
msg = i2o_msg_get_wait(c, 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 = kzalloc(reply_size, GFP_KERNEL);
|
|
if (!reply) {
|
|
printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
|
|
c->name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
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;
|
|
|
|
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;
|
|
/* 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 sg_list_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 sg_list_cleanup;
|
|
}
|
|
}
|
|
//TODO 64bit fix
|
|
sg[i].addr_bus = virt_to_bus(p);
|
|
}
|
|
}
|
|
|
|
rcode = i2o_msg_post_wait(c, msg, 60);
|
|
if (rcode) {
|
|
reply[4] = ((u32) rcode) << 24;
|
|
goto sg_list_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, 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;
|
|
/* Copy in the user's I2O command */
|
|
if (copy_from_user(msg, 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 *)(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 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++)
|
|
kfree(sg_list[i]);
|
|
|
|
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;
|
|
|
|
#ifdef CONFIG_I2O_EXT_ADAPTEC
|
|
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,
|
|
#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");
|