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Diffstat (limited to 'drivers/message/i2o/device.c')
-rw-r--r--drivers/message/i2o/device.c594
1 files changed, 0 insertions, 594 deletions
diff --git a/drivers/message/i2o/device.c b/drivers/message/i2o/device.c
deleted file mode 100644
index 98348f420b52..000000000000
--- a/drivers/message/i2o/device.c
+++ /dev/null
@@ -1,594 +0,0 @@
-/*
- * 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>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include "core.h"
-
-/**
- * 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 *msg;
-
- msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
- if (IS_ERR(msg))
- return PTR_ERR(msg);
-
- msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
- msg->u.head[1] =
- cpu_to_le32(cmd << 24 | HOST_TID << 12 | dev->lct_data.tid);
- msg->body[0] = cpu_to_le32(type);
-
- return i2o_msg_post_wait(dev->iop, msg, 60);
-}
-
-/**
- * i2o_device_claim - claim a device for use by an OSM
- * @dev: I2O device to claim
- *
- * Do the leg work to assign a device to a given OSM. If the claim succeeds,
- * the owner is the primary. 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;
-
- mutex_lock(&dev->lock);
-
- rc = i2o_device_issue_claim(dev, I2O_CMD_UTIL_CLAIM, I2O_CLAIM_PRIMARY);
- if (!rc)
- pr_debug("i2o: claim of device %d succeeded\n",
- dev->lct_data.tid);
- else
- pr_debug("i2o: claim of device %d failed %d\n",
- dev->lct_data.tid, rc);
-
- mutex_unlock(&dev->lock);
-
- return rc;
-}
-
-/**
- * i2o_device_claim_release - release a device that the OSM is using
- * @dev: device to release
- *
- * 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;
-
- mutex_lock(&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 succeeded\n",
- dev->lct_data.tid);
- else
- pr_debug("i2o: claim release of device %d failed %d\n",
- dev->lct_data.tid, rc);
-
- mutex_unlock(&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_name(dev));
-
- kfree(i2o_dev);
-}
-
-/**
- * class_id_show - Displays class id of I2O device
- * @dev: device of which the class id should be displayed
- * @attr: pointer to device attribute
- * @buf: buffer into which the class id should be printed
- *
- * Returns the number of bytes which are printed into the buffer.
- */
-static ssize_t class_id_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct i2o_device *i2o_dev = to_i2o_device(dev);
-
- sprintf(buf, "0x%03x\n", i2o_dev->lct_data.class_id);
- return strlen(buf) + 1;
-}
-static DEVICE_ATTR_RO(class_id);
-
-/**
- * tid_show - Displays TID of I2O device
- * @dev: device of which the TID should be displayed
- * @attr: pointer to device attribute
- * @buf: buffer into which the TID should be printed
- *
- * Returns the number of bytes which are printed into the buffer.
- */
-static ssize_t tid_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct i2o_device *i2o_dev = to_i2o_device(dev);
-
- sprintf(buf, "0x%03x\n", i2o_dev->lct_data.tid);
- return strlen(buf) + 1;
-}
-static DEVICE_ATTR_RO(tid);
-
-/* I2O device attributes */
-static struct attribute *i2o_device_attrs[] = {
- &dev_attr_class_id.attr,
- &dev_attr_tid.attr,
- NULL,
-};
-
-static const struct attribute_group i2o_device_group = {
- .attrs = i2o_device_attrs,
-};
-
-const struct attribute_group *i2o_device_groups[] = {
- &i2o_device_group,
- NULL,
-};
-
-/**
- * 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 = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- INIT_LIST_HEAD(&dev->list);
- mutex_init(&dev->lock);
-
- dev->device.bus = &i2o_bus_type;
- dev->device.release = &i2o_device_release;
-
- return dev;
-}
-
-/**
- * i2o_device_add - allocate a new I2O device and add it to the IOP
- * @c: I2O controller that 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 zero on success, or a -ve errno.
- */
-static int i2o_device_add(struct i2o_controller *c, i2o_lct_entry *entry)
-{
- struct i2o_device *i2o_dev, *tmp;
- int rc;
-
- i2o_dev = i2o_device_alloc();
- if (IS_ERR(i2o_dev)) {
- printk(KERN_ERR "i2o: unable to allocate i2o device\n");
- return PTR_ERR(i2o_dev);
- }
-
- i2o_dev->lct_data = *entry;
-
- dev_set_name(&i2o_dev->device, "%d:%03x", c->unit,
- i2o_dev->lct_data.tid);
-
- i2o_dev->iop = c;
- i2o_dev->device.parent = &c->device;
-
- rc = device_register(&i2o_dev->device);
- if (rc)
- goto err;
-
- list_add_tail(&i2o_dev->list, &c->devices);
-
- /* 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)) {
- rc = sysfs_create_link(&i2o_dev->device.kobj,
- &tmp->device.kobj, "user");
- if (rc)
- goto unreg_dev;
- }
-
- /* create user entries referring 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)) {
- rc = sysfs_create_link(&tmp->device.kobj,
- &i2o_dev->device.kobj, "user");
- if (rc)
- goto rmlink1;
- }
-
- /* 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)) {
- rc = sysfs_create_link(&i2o_dev->device.kobj,
- &tmp->device.kobj, "parent");
- if (rc)
- goto rmlink1;
- }
-
- /* create parent entries referring 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)) {
- rc = sysfs_create_link(&tmp->device.kobj,
- &i2o_dev->device.kobj, "parent");
- if (rc)
- goto rmlink2;
- }
-
- i2o_driver_notify_device_add_all(i2o_dev);
-
- pr_debug("i2o: device %s added\n", dev_name(&i2o_dev->device));
-
- return 0;
-
-rmlink2:
- /* If link creating failed halfway, we loop whole list to cleanup.
- * And we don't care wrong removing of link, because sysfs_remove_link
- * will take care of it.
- */
- 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");
- }
- sysfs_remove_link(&i2o_dev->device.kobj, "parent");
-rmlink1:
- list_for_each_entry(tmp, &c->devices, list)
- if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
- sysfs_remove_link(&tmp->device.kobj, "user");
- sysfs_remove_link(&i2o_dev->device.kobj, "user");
-unreg_dev:
- list_del(&i2o_dev->list);
- device_unregister(&i2o_dev->device);
-err:
- kfree(i2o_dev);
- return rc;
-}
-
-/**
- * i2o_device_remove - remove an I2O device from the I2O core
- * @i2o_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)
-{
- struct i2o_device *tmp;
- struct i2o_controller *c = i2o_dev->iop;
-
- i2o_driver_notify_device_remove_all(i2o_dev);
-
- 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");
- }
- 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;
- u32 *dlct = c->dlct.virt;
- int max = 0, i = 0;
- u16 table_size;
- u32 buf;
-
- mutex_lock(&c->lct_lock);
-
- kfree(c->lct);
-
- buf = le32_to_cpu(*dlct++);
- table_size = buf & 0xffff;
-
- lct = c->lct = kmalloc(table_size * 4, GFP_KERNEL);
- if (!lct) {
- mutex_unlock(&c->lct_lock);
- return -ENOMEM;
- }
-
- lct->lct_ver = buf >> 28;
- lct->boot_tid = buf >> 16 & 0xfff;
- lct->table_size = table_size;
- lct->change_ind = le32_to_cpu(*dlct++);
- lct->iop_flags = le32_to_cpu(*dlct++);
-
- table_size -= 3;
-
- pr_debug("%s: LCT has %d entries (LCT size: %d)\n", c->name, max,
- lct->table_size);
-
- while (table_size > 0) {
- i2o_lct_entry *entry = &lct->lct_entry[max];
- int found = 0;
-
- buf = le32_to_cpu(*dlct++);
- entry->entry_size = buf & 0xffff;
- entry->tid = buf >> 16 & 0xfff;
-
- entry->change_ind = le32_to_cpu(*dlct++);
- entry->device_flags = le32_to_cpu(*dlct++);
-
- buf = le32_to_cpu(*dlct++);
- entry->class_id = buf & 0xfff;
- entry->version = buf >> 12 & 0xf;
- entry->vendor_id = buf >> 16;
-
- entry->sub_class = le32_to_cpu(*dlct++);
-
- buf = le32_to_cpu(*dlct++);
- entry->user_tid = buf & 0xfff;
- entry->parent_tid = buf >> 12 & 0xfff;
- entry->bios_info = buf >> 24;
-
- memcpy(&entry->identity_tag, dlct, 8);
- dlct += 2;
-
- entry->event_capabilities = le32_to_cpu(*dlct++);
-
- /* add new devices, which are new in the LCT */
- list_for_each_entry_safe(dev, tmp, &c->devices, list) {
- if (entry->tid == dev->lct_data.tid) {
- found = 1;
- break;
- }
- }
-
- if (!found)
- i2o_device_add(c, entry);
-
- table_size -= 9;
- max++;
- }
-
- /* 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);
- }
-
- mutex_unlock(&c->lct_lock);
-
- return 0;
-}
-
-/*
- * 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.
- */
-int i2o_parm_issue(struct i2o_device *i2o_dev, int cmd, void *oplist,
- int oplen, void *reslist, int reslen)
-{
- struct i2o_message *msg;
- 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))
- return -ENOMEM;
-
- msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
- if (IS_ERR(msg)) {
- i2o_dma_free(dev, &res);
- return PTR_ERR(msg);
- }
-
- i = 0;
- msg->u.head[1] =
- cpu_to_le32(cmd << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid);
- msg->body[i++] = cpu_to_le32(0x00000000);
- msg->body[i++] = cpu_to_le32(0x4C000000 | oplen); /* OperationList */
- memcpy(&msg->body[i], oplist, oplen);
- i += (oplen / 4 + (oplen % 4 ? 1 : 0));
- msg->body[i++] = cpu_to_le32(0xD0000000 | res.len); /* ResultList */
- msg->body[i++] = cpu_to_le32(res.phys);
-
- msg->u.head[0] =
- cpu_to_le32(I2O_MESSAGE_SIZE(i + sizeof(struct i2o_message) / 4) |
- SGL_OFFSET_5);
-
- rc = i2o_msg_post_wait_mem(c, msg, 10, &res);
-
- /* This only looks like a memory leak - don't "fix" it. */
- if (rc == -ETIMEDOUT)
- return rc;
-
- memcpy(reslist, res.virt, res.len);
- i2o_dma_free(dev, &res);
-
- return rc;
-}
-
-/*
- * 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)
-{
- u32 opblk[] = { cpu_to_le32(0x00000001),
- cpu_to_le32((u16) group << 16 | I2O_PARAMS_FIELD_GET),
- cpu_to_le32((s16) field << 16 | 0x00000001)
- };
- u8 *resblk; /* 8 bytes for header */
- int rc;
-
- resblk = kmalloc(buflen + 8, GFP_KERNEL);
- if (!resblk)
- return -ENOMEM;
-
- rc = i2o_parm_issue(i2o_dev, I2O_CMD_UTIL_PARAMS_GET, opblk,
- sizeof(opblk), resblk, buflen + 8);
-
- memcpy(buf, resblk + 8, buflen); /* cut off header */
-
- kfree(resblk);
-
- return rc;
-}
-
-/*
- * 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;
-}
-
-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);