f88e119c4b
Changes: - Removed unnecessary checking of NULL before calling kfree() - Make some functions static - Changed pr_debug() into osm_debug() - Use i2o_msg_in_to_virt() for getting a pointer to the message frame - Cleaned up some comments - Changed some le32_to_cpu() into readl() where necessary - Make error messages of OSM's look the same - Cleaned up error handling in i2o_block_end_request() - Removed unused error handling of failed messages in Block-OSM, which are not allowed by the I2O spec - Corrected the blocksize detection in i2o_block - Added hrt and lct sysfs-attribute to controller - Call done() function in SCSI-OSM after freeing DMA buffers - Removed unneeded variable for message size calculation in i2o_scsi_queuecommand() - Make some changes to remove sparse warnings - Reordered some functions - Cleaned up controller initialization - Replaced some magic numbers by defines - Removed unnecessary dma_sync_single_for_cpu() call on coherent DMA - Removed some unused fields in i2o_controller and removed some unused functions Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
636 lines
16 KiB
C
636 lines
16 KiB
C
/*
|
|
* Functions to handle I2O devices
|
|
*
|
|
* Copyright (C) 2004 Markus Lidel <Markus.Lidel@shadowconnect.com>
|
|
*
|
|
* 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.
|
|
*
|
|
* Fixes/additions:
|
|
* Markus Lidel <Markus.Lidel@shadowconnect.com>
|
|
* initial version.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/i2o.h>
|
|
#include <linux/delay.h>
|
|
|
|
/* Exec OSM functions */
|
|
extern struct bus_type i2o_bus_type;
|
|
|
|
/**
|
|
* i2o_device_issue_claim - claim or release a device
|
|
* @dev: I2O device to claim or release
|
|
* @cmd: claim or release command
|
|
* @type: type of claim
|
|
*
|
|
* Issue I2O UTIL_CLAIM or UTIL_RELEASE messages. The message to be sent
|
|
* is set by cmd. dev is the I2O device which should be claim or
|
|
* released and the type is the claim type (see the I2O spec).
|
|
*
|
|
* Returs 0 on success or negative error code on failure.
|
|
*/
|
|
static inline int i2o_device_issue_claim(struct i2o_device *dev, u32 cmd,
|
|
u32 type)
|
|
{
|
|
struct i2o_message __iomem *msg;
|
|
u32 m;
|
|
|
|
m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
|
|
if (m == I2O_QUEUE_EMPTY)
|
|
return -ETIMEDOUT;
|
|
|
|
writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
|
|
writel(cmd << 24 | HOST_TID << 12 | dev->lct_data.tid, &msg->u.head[1]);
|
|
writel(type, &msg->body[0]);
|
|
|
|
return i2o_msg_post_wait(dev->iop, m, 60);
|
|
};
|
|
|
|
/**
|
|
* i2o_device_claim - claim a device for use by an OSM
|
|
* @dev: I2O device to claim
|
|
* @drv: I2O driver which wants to claim the device
|
|
*
|
|
* Do the leg work to assign a device to a given OSM. If the claim succeed
|
|
* the owner of the rimary. If the attempt fails a negative errno code
|
|
* is returned. On success zero is returned.
|
|
*/
|
|
int i2o_device_claim(struct i2o_device *dev)
|
|
{
|
|
int rc = 0;
|
|
|
|
down(&dev->lock);
|
|
|
|
rc = i2o_device_issue_claim(dev, I2O_CMD_UTIL_CLAIM, I2O_CLAIM_PRIMARY);
|
|
if (!rc)
|
|
pr_debug("i2o: claim of device %d succeded\n",
|
|
dev->lct_data.tid);
|
|
else
|
|
pr_debug("i2o: claim of device %d failed %d\n",
|
|
dev->lct_data.tid, rc);
|
|
|
|
up(&dev->lock);
|
|
|
|
return rc;
|
|
};
|
|
|
|
/**
|
|
* i2o_device_claim_release - release a device that the OSM is using
|
|
* @dev: device to release
|
|
* @drv: driver which claimed the device
|
|
*
|
|
* Drop a claim by an OSM on a given I2O device.
|
|
*
|
|
* AC - some devices seem to want to refuse an unclaim until they have
|
|
* finished internal processing. It makes sense since you don't want a
|
|
* new device to go reconfiguring the entire system until you are done.
|
|
* Thus we are prepared to wait briefly.
|
|
*
|
|
* Returns 0 on success or negative error code on failure.
|
|
*/
|
|
int i2o_device_claim_release(struct i2o_device *dev)
|
|
{
|
|
int tries;
|
|
int rc = 0;
|
|
|
|
down(&dev->lock);
|
|
|
|
/*
|
|
* If the controller takes a nonblocking approach to
|
|
* releases we have to sleep/poll for a few times.
|
|
*/
|
|
for (tries = 0; tries < 10; tries++) {
|
|
rc = i2o_device_issue_claim(dev, I2O_CMD_UTIL_RELEASE,
|
|
I2O_CLAIM_PRIMARY);
|
|
if (!rc)
|
|
break;
|
|
|
|
ssleep(1);
|
|
}
|
|
|
|
if (!rc)
|
|
pr_debug("i2o: claim release of device %d succeded\n",
|
|
dev->lct_data.tid);
|
|
else
|
|
pr_debug("i2o: claim release of device %d failed %d\n",
|
|
dev->lct_data.tid, rc);
|
|
|
|
up(&dev->lock);
|
|
|
|
return rc;
|
|
};
|
|
|
|
/**
|
|
* i2o_device_release - release the memory for a I2O device
|
|
* @dev: I2O device which should be released
|
|
*
|
|
* Release the allocated memory. This function is called if refcount of
|
|
* device reaches 0 automatically.
|
|
*/
|
|
static void i2o_device_release(struct device *dev)
|
|
{
|
|
struct i2o_device *i2o_dev = to_i2o_device(dev);
|
|
|
|
pr_debug("i2o: device %s released\n", dev->bus_id);
|
|
|
|
kfree(i2o_dev);
|
|
};
|
|
|
|
/**
|
|
* i2o_device_class_release - Remove I2O device attributes
|
|
* @cd: I2O class device which is added to the I2O device class
|
|
*
|
|
* Removes attributes from the I2O device again. Also search each device
|
|
* on the controller for I2O devices which refert to this device as parent
|
|
* or user and remove this links also.
|
|
*/
|
|
static void i2o_device_class_release(struct class_device *cd)
|
|
{
|
|
struct i2o_device *i2o_dev, *tmp;
|
|
struct i2o_controller *c;
|
|
|
|
i2o_dev = to_i2o_device(cd->dev);
|
|
c = i2o_dev->iop;
|
|
|
|
sysfs_remove_link(&i2o_dev->device.kobj, "parent");
|
|
sysfs_remove_link(&i2o_dev->device.kobj, "user");
|
|
|
|
list_for_each_entry(tmp, &c->devices, list) {
|
|
if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid)
|
|
sysfs_remove_link(&tmp->device.kobj, "parent");
|
|
if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
|
|
sysfs_remove_link(&tmp->device.kobj, "user");
|
|
}
|
|
};
|
|
|
|
/* I2O device class */
|
|
static struct class i2o_device_class = {
|
|
.name = "i2o_device",
|
|
.release = i2o_device_class_release
|
|
};
|
|
|
|
/**
|
|
* i2o_device_alloc - Allocate a I2O device and initialize it
|
|
*
|
|
* Allocate the memory for a I2O device and initialize locks and lists
|
|
*
|
|
* Returns the allocated I2O device or a negative error code if the device
|
|
* could not be allocated.
|
|
*/
|
|
static struct i2o_device *i2o_device_alloc(void)
|
|
{
|
|
struct i2o_device *dev;
|
|
|
|
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (!dev)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
memset(dev, 0, sizeof(*dev));
|
|
|
|
INIT_LIST_HEAD(&dev->list);
|
|
init_MUTEX(&dev->lock);
|
|
|
|
dev->device.bus = &i2o_bus_type;
|
|
dev->device.release = &i2o_device_release;
|
|
dev->classdev.class = &i2o_device_class;
|
|
dev->classdev.dev = &dev->device;
|
|
|
|
return dev;
|
|
};
|
|
|
|
/**
|
|
* i2o_device_add - allocate a new I2O device and add it to the IOP
|
|
* @iop: I2O controller where the device is on
|
|
* @entry: LCT entry of the I2O device
|
|
*
|
|
* Allocate a new I2O device and initialize it with the LCT entry. The
|
|
* device is appended to the device list of the controller.
|
|
*
|
|
* Returns a pointer to the I2O device on success or negative error code
|
|
* on failure.
|
|
*/
|
|
static struct i2o_device *i2o_device_add(struct i2o_controller *c,
|
|
i2o_lct_entry * entry)
|
|
{
|
|
struct i2o_device *dev;
|
|
|
|
dev = i2o_device_alloc();
|
|
if (IS_ERR(dev)) {
|
|
printk(KERN_ERR "i2o: unable to allocate i2o device\n");
|
|
return dev;
|
|
}
|
|
|
|
dev->lct_data = *entry;
|
|
|
|
snprintf(dev->device.bus_id, BUS_ID_SIZE, "%d:%03x", c->unit,
|
|
dev->lct_data.tid);
|
|
|
|
snprintf(dev->classdev.class_id, BUS_ID_SIZE, "%d:%03x", c->unit,
|
|
dev->lct_data.tid);
|
|
|
|
dev->iop = c;
|
|
dev->device.parent = &c->device;
|
|
|
|
device_register(&dev->device);
|
|
|
|
list_add_tail(&dev->list, &c->devices);
|
|
|
|
class_device_register(&dev->classdev);
|
|
|
|
i2o_driver_notify_device_add_all(dev);
|
|
|
|
pr_debug("i2o: device %s added\n", dev->device.bus_id);
|
|
|
|
return dev;
|
|
};
|
|
|
|
/**
|
|
* i2o_device_remove - remove an I2O device from the I2O core
|
|
* @dev: I2O device which should be released
|
|
*
|
|
* Is used on I2O controller removal or LCT modification, when the device
|
|
* is removed from the system. Note that the device could still hang
|
|
* around until the refcount reaches 0.
|
|
*/
|
|
void i2o_device_remove(struct i2o_device *i2o_dev)
|
|
{
|
|
i2o_driver_notify_device_remove_all(i2o_dev);
|
|
class_device_unregister(&i2o_dev->classdev);
|
|
list_del(&i2o_dev->list);
|
|
device_unregister(&i2o_dev->device);
|
|
};
|
|
|
|
/**
|
|
* i2o_device_parse_lct - Parse a previously fetched LCT and create devices
|
|
* @c: I2O controller from which the LCT should be parsed.
|
|
*
|
|
* The Logical Configuration Table tells us what we can talk to on the
|
|
* board. For every entry we create an I2O device, which is registered in
|
|
* the I2O core.
|
|
*
|
|
* Returns 0 on success or negative error code on failure.
|
|
*/
|
|
int i2o_device_parse_lct(struct i2o_controller *c)
|
|
{
|
|
struct i2o_device *dev, *tmp;
|
|
i2o_lct *lct;
|
|
int i;
|
|
int max;
|
|
|
|
down(&c->lct_lock);
|
|
|
|
kfree(c->lct);
|
|
|
|
lct = c->dlct.virt;
|
|
|
|
c->lct = kmalloc(lct->table_size * 4, GFP_KERNEL);
|
|
if (!c->lct) {
|
|
up(&c->lct_lock);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (lct->table_size * 4 > c->dlct.len) {
|
|
memcpy_fromio(c->lct, c->dlct.virt, c->dlct.len);
|
|
up(&c->lct_lock);
|
|
return -EAGAIN;
|
|
}
|
|
|
|
memcpy_fromio(c->lct, c->dlct.virt, lct->table_size * 4);
|
|
|
|
lct = c->lct;
|
|
|
|
max = (lct->table_size - 3) / 9;
|
|
|
|
pr_debug("%s: LCT has %d entries (LCT size: %d)\n", c->name, max,
|
|
lct->table_size);
|
|
|
|
/* remove devices, which are not in the LCT anymore */
|
|
list_for_each_entry_safe(dev, tmp, &c->devices, list) {
|
|
int found = 0;
|
|
|
|
for (i = 0; i < max; i++) {
|
|
if (lct->lct_entry[i].tid == dev->lct_data.tid) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
i2o_device_remove(dev);
|
|
}
|
|
|
|
/* add new devices, which are new in the LCT */
|
|
for (i = 0; i < max; i++) {
|
|
int found = 0;
|
|
|
|
list_for_each_entry_safe(dev, tmp, &c->devices, list) {
|
|
if (lct->lct_entry[i].tid == dev->lct_data.tid) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
i2o_device_add(c, &lct->lct_entry[i]);
|
|
}
|
|
up(&c->lct_lock);
|
|
|
|
return 0;
|
|
};
|
|
|
|
/**
|
|
* i2o_device_class_show_class_id - Displays class id of I2O device
|
|
* @cd: class device of which the class id should be displayed
|
|
* @buf: buffer into which the class id should be printed
|
|
*
|
|
* Returns the number of bytes which are printed into the buffer.
|
|
*/
|
|
static ssize_t i2o_device_class_show_class_id(struct class_device *cd,
|
|
char *buf)
|
|
{
|
|
struct i2o_device *dev = to_i2o_device(cd->dev);
|
|
|
|
sprintf(buf, "%03x\n", dev->lct_data.class_id);
|
|
return strlen(buf) + 1;
|
|
};
|
|
|
|
/**
|
|
* i2o_device_class_show_tid - Displays TID of I2O device
|
|
* @cd: class device of which the TID should be displayed
|
|
* @buf: buffer into which the class id should be printed
|
|
*
|
|
* Returns the number of bytes which are printed into the buffer.
|
|
*/
|
|
static ssize_t i2o_device_class_show_tid(struct class_device *cd, char *buf)
|
|
{
|
|
struct i2o_device *dev = to_i2o_device(cd->dev);
|
|
|
|
sprintf(buf, "%03x\n", dev->lct_data.tid);
|
|
return strlen(buf) + 1;
|
|
};
|
|
|
|
/* I2O device class attributes */
|
|
static CLASS_DEVICE_ATTR(class_id, S_IRUGO, i2o_device_class_show_class_id,
|
|
NULL);
|
|
static CLASS_DEVICE_ATTR(tid, S_IRUGO, i2o_device_class_show_tid, NULL);
|
|
|
|
/**
|
|
* i2o_device_class_add - Adds attributes to the I2O device
|
|
* @cd: I2O class device which is added to the I2O device class
|
|
*
|
|
* This function get called when a I2O device is added to the class. It
|
|
* creates the attributes for each device and creates user/parent symlink
|
|
* if necessary.
|
|
*
|
|
* Returns 0 on success or negative error code on failure.
|
|
*/
|
|
static int i2o_device_class_add(struct class_device *cd)
|
|
{
|
|
struct i2o_device *i2o_dev, *tmp;
|
|
struct i2o_controller *c;
|
|
|
|
i2o_dev = to_i2o_device(cd->dev);
|
|
c = i2o_dev->iop;
|
|
|
|
class_device_create_file(cd, &class_device_attr_class_id);
|
|
class_device_create_file(cd, &class_device_attr_tid);
|
|
|
|
/* create user entries for this device */
|
|
tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.user_tid);
|
|
if (tmp && (tmp != i2o_dev))
|
|
sysfs_create_link(&i2o_dev->device.kobj, &tmp->device.kobj,
|
|
"user");
|
|
|
|
/* create user entries refering to this device */
|
|
list_for_each_entry(tmp, &c->devices, list)
|
|
if ((tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
|
|
&& (tmp != i2o_dev))
|
|
sysfs_create_link(&tmp->device.kobj,
|
|
&i2o_dev->device.kobj, "user");
|
|
|
|
/* create parent entries for this device */
|
|
tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.parent_tid);
|
|
if (tmp && (tmp != i2o_dev))
|
|
sysfs_create_link(&i2o_dev->device.kobj, &tmp->device.kobj,
|
|
"parent");
|
|
|
|
/* create parent entries refering to this device */
|
|
list_for_each_entry(tmp, &c->devices, list)
|
|
if ((tmp->lct_data.parent_tid == i2o_dev->lct_data.tid)
|
|
&& (tmp != i2o_dev))
|
|
sysfs_create_link(&tmp->device.kobj,
|
|
&i2o_dev->device.kobj, "parent");
|
|
|
|
return 0;
|
|
};
|
|
|
|
/* I2O device class interface */
|
|
static struct class_interface i2o_device_class_interface = {
|
|
.class = &i2o_device_class,
|
|
.add = i2o_device_class_add
|
|
};
|
|
|
|
/*
|
|
* Run time support routines
|
|
*/
|
|
|
|
/* Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET
|
|
*
|
|
* This function can be used for all UtilParamsGet/Set operations.
|
|
* The OperationList is given in oplist-buffer,
|
|
* and results are returned in reslist-buffer.
|
|
* Note that the minimum sized reslist is 8 bytes and contains
|
|
* ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
|
|
*/
|
|
|
|
static int i2o_parm_issue(struct i2o_device *i2o_dev, int cmd, void *oplist,
|
|
int oplen, void *reslist, int reslen)
|
|
{
|
|
struct i2o_message __iomem *msg;
|
|
u32 m;
|
|
u32 *res32 = (u32 *) reslist;
|
|
u32 *restmp = (u32 *) reslist;
|
|
int len = 0;
|
|
int i = 0;
|
|
int rc;
|
|
struct i2o_dma res;
|
|
struct i2o_controller *c = i2o_dev->iop;
|
|
struct device *dev = &c->pdev->dev;
|
|
|
|
res.virt = NULL;
|
|
|
|
if (i2o_dma_alloc(dev, &res, reslen, GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
|
|
if (m == I2O_QUEUE_EMPTY) {
|
|
i2o_dma_free(dev, &res);
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
i = 0;
|
|
writel(cmd << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid,
|
|
&msg->u.head[1]);
|
|
writel(0, &msg->body[i++]);
|
|
writel(0x4C000000 | oplen, &msg->body[i++]); /* OperationList */
|
|
memcpy_toio(&msg->body[i], oplist, oplen);
|
|
i += (oplen / 4 + (oplen % 4 ? 1 : 0));
|
|
writel(0xD0000000 | res.len, &msg->body[i++]); /* ResultList */
|
|
writel(res.phys, &msg->body[i++]);
|
|
|
|
writel(I2O_MESSAGE_SIZE(i + sizeof(struct i2o_message) / 4) |
|
|
SGL_OFFSET_5, &msg->u.head[0]);
|
|
|
|
rc = i2o_msg_post_wait_mem(c, m, 10, &res);
|
|
|
|
/* This only looks like a memory leak - don't "fix" it. */
|
|
if (rc == -ETIMEDOUT)
|
|
return rc;
|
|
|
|
memcpy_fromio(reslist, res.virt, res.len);
|
|
i2o_dma_free(dev, &res);
|
|
|
|
/* Query failed */
|
|
if (rc)
|
|
return rc;
|
|
/*
|
|
* Calculate number of bytes of Result LIST
|
|
* We need to loop through each Result BLOCK and grab the length
|
|
*/
|
|
restmp = res32 + 1;
|
|
len = 1;
|
|
for (i = 0; i < (res32[0] & 0X0000FFFF); i++) {
|
|
if (restmp[0] & 0x00FF0000) { /* BlockStatus != SUCCESS */
|
|
printk(KERN_WARNING
|
|
"%s - Error:\n ErrorInfoSize = 0x%02x, "
|
|
"BlockStatus = 0x%02x, BlockSize = 0x%04x\n",
|
|
(cmd ==
|
|
I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET" :
|
|
"PARAMS_GET", res32[1] >> 24,
|
|
(res32[1] >> 16) & 0xFF, res32[1] & 0xFFFF);
|
|
|
|
/*
|
|
* If this is the only request,than we return an error
|
|
*/
|
|
if ((res32[0] & 0x0000FFFF) == 1) {
|
|
return -((res32[1] >> 16) & 0xFF); /* -BlockStatus */
|
|
}
|
|
}
|
|
len += restmp[0] & 0x0000FFFF; /* Length of res BLOCK */
|
|
restmp += restmp[0] & 0x0000FFFF; /* Skip to next BLOCK */
|
|
}
|
|
return (len << 2); /* bytes used by result list */
|
|
}
|
|
|
|
/*
|
|
* Query one field group value or a whole scalar group.
|
|
*/
|
|
int i2o_parm_field_get(struct i2o_device *i2o_dev, int group, int field,
|
|
void *buf, int buflen)
|
|
{
|
|
u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
|
|
u8 resblk[8 + buflen]; /* 8 bytes for header */
|
|
int size;
|
|
|
|
if (field == -1) /* whole group */
|
|
opblk[4] = -1;
|
|
|
|
size = i2o_parm_issue(i2o_dev, I2O_CMD_UTIL_PARAMS_GET, opblk,
|
|
sizeof(opblk), resblk, buflen + 8);
|
|
|
|
memcpy(buf, resblk + 8, buflen); /* cut off header */
|
|
|
|
if (size > buflen)
|
|
return buflen;
|
|
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* if oper == I2O_PARAMS_TABLE_GET, get from all rows
|
|
* if fieldcount == -1 return all fields
|
|
* ibuf and ibuflen are unused (use NULL, 0)
|
|
* else return specific fields
|
|
* ibuf contains fieldindexes
|
|
*
|
|
* if oper == I2O_PARAMS_LIST_GET, get from specific rows
|
|
* if fieldcount == -1 return all fields
|
|
* ibuf contains rowcount, keyvalues
|
|
* else return specific fields
|
|
* fieldcount is # of fieldindexes
|
|
* ibuf contains fieldindexes, rowcount, keyvalues
|
|
*
|
|
* You could also use directly function i2o_issue_params().
|
|
*/
|
|
int i2o_parm_table_get(struct i2o_device *dev, int oper, int group,
|
|
int fieldcount, void *ibuf, int ibuflen, void *resblk,
|
|
int reslen)
|
|
{
|
|
u16 *opblk;
|
|
int size;
|
|
|
|
size = 10 + ibuflen;
|
|
if (size % 4)
|
|
size += 4 - size % 4;
|
|
|
|
opblk = kmalloc(size, GFP_KERNEL);
|
|
if (opblk == NULL) {
|
|
printk(KERN_ERR "i2o: no memory for query buffer.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
opblk[0] = 1; /* operation count */
|
|
opblk[1] = 0; /* pad */
|
|
opblk[2] = oper;
|
|
opblk[3] = group;
|
|
opblk[4] = fieldcount;
|
|
memcpy(opblk + 5, ibuf, ibuflen); /* other params */
|
|
|
|
size = i2o_parm_issue(dev, I2O_CMD_UTIL_PARAMS_GET, opblk,
|
|
size, resblk, reslen);
|
|
|
|
kfree(opblk);
|
|
if (size > reslen)
|
|
return reslen;
|
|
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* i2o_device_init - Initialize I2O devices
|
|
*
|
|
* Registers the I2O device class.
|
|
*
|
|
* Returns 0 on success or negative error code on failure.
|
|
*/
|
|
int i2o_device_init(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = class_register(&i2o_device_class);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return class_interface_register(&i2o_device_class_interface);
|
|
};
|
|
|
|
/**
|
|
* i2o_device_exit - I2O devices exit function
|
|
*
|
|
* Unregisters the I2O device class.
|
|
*/
|
|
void i2o_device_exit(void)
|
|
{
|
|
class_interface_register(&i2o_device_class_interface);
|
|
class_unregister(&i2o_device_class);
|
|
};
|
|
|
|
EXPORT_SYMBOL(i2o_device_claim);
|
|
EXPORT_SYMBOL(i2o_device_claim_release);
|
|
EXPORT_SYMBOL(i2o_parm_field_get);
|
|
EXPORT_SYMBOL(i2o_parm_table_get);
|
|
EXPORT_SYMBOL(i2o_parm_issue);
|