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-rw-r--r--drivers/message/i2o/iop.c1247
1 files changed, 0 insertions, 1247 deletions
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
deleted file mode 100644
index 92752fb..0000000
--- a/drivers/message/i2o/iop.c
+++ /dev/null
@@ -1,1247 +0,0 @@
-/*
- * Functions to handle I2O controllers and I2O message handling
- *
- * Copyright (C) 1999-2002 Red Hat Software
- *
- * Written by Alan Cox, Building Number Three Ltd
- *
- * 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.
- *
- * A lot of the I2O message side code from this is taken from the
- * Red Creek RCPCI45 adapter driver by Red Creek Communications
- *
- * Fixes/additions:
- * Philipp Rumpf
- * Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI>
- * Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI>
- * Deepak Saxena <deepak@plexity.net>
- * Boji T Kannanthanam <boji.t.kannanthanam@intel.com>
- * Alan Cox <alan@lxorguk.ukuu.org.uk>:
- * Ported to Linux 2.5.
- * Markus Lidel <Markus.Lidel@shadowconnect.com>:
- * Minor fixes for 2.6.
- */
-
-#include <linux/module.h>
-#include <linux/i2o.h>
-#include <linux/delay.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include "core.h"
-
-#define OSM_NAME "i2o"
-#define OSM_VERSION "1.325"
-#define OSM_DESCRIPTION "I2O subsystem"
-
-/* global I2O controller list */
-LIST_HEAD(i2o_controllers);
-
-/*
- * global I2O System Table. Contains information about all the IOPs in the
- * system. Used to inform IOPs about each others existence.
- */
-static struct i2o_dma i2o_systab;
-
-static int i2o_hrt_get(struct i2o_controller *c);
-
-/**
- * i2o_msg_get_wait - obtain an I2O message from the IOP
- * @c: I2O controller
- * @wait: how long to wait until timeout
- *
- * This function waits up to wait seconds for a message slot to be
- * available.
- *
- * On a success the message is returned and the pointer to the message is
- * set in msg. The returned message is the physical page frame offset
- * address from the read port (see the i2o spec). If no message is
- * available returns I2O_QUEUE_EMPTY and msg is leaved untouched.
- */
-struct i2o_message *i2o_msg_get_wait(struct i2o_controller *c, int wait)
-{
- unsigned long timeout = jiffies + wait * HZ;
- struct i2o_message *msg;
-
- while (IS_ERR(msg = i2o_msg_get(c))) {
- if (time_after(jiffies, timeout)) {
- osm_debug("%s: Timeout waiting for message frame.\n",
- c->name);
- return ERR_PTR(-ETIMEDOUT);
- }
- schedule_timeout_uninterruptible(1);
- }
-
- return msg;
-};
-
-#if BITS_PER_LONG == 64
-/**
- * i2o_cntxt_list_add - Append a pointer to context list and return a id
- * @c: controller to which the context list belong
- * @ptr: pointer to add to the context list
- *
- * Because the context field in I2O is only 32-bit large, on 64-bit the
- * pointer is to large to fit in the context field. The i2o_cntxt_list
- * functions therefore map pointers to context fields.
- *
- * Returns context id > 0 on success or 0 on failure.
- */
-u32 i2o_cntxt_list_add(struct i2o_controller * c, void *ptr)
-{
- struct i2o_context_list_element *entry;
- unsigned long flags;
-
- if (!ptr)
- osm_err("%s: couldn't add NULL pointer to context list!\n",
- c->name);
-
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (!entry) {
- osm_err("%s: Could not allocate memory for context list element"
- "\n", c->name);
- return 0;
- }
-
- entry->ptr = ptr;
- entry->timestamp = jiffies;
- INIT_LIST_HEAD(&entry->list);
-
- spin_lock_irqsave(&c->context_list_lock, flags);
-
- if (unlikely(atomic_inc_and_test(&c->context_list_counter)))
- atomic_inc(&c->context_list_counter);
-
- entry->context = atomic_read(&c->context_list_counter);
-
- list_add(&entry->list, &c->context_list);
-
- spin_unlock_irqrestore(&c->context_list_lock, flags);
-
- osm_debug("%s: Add context to list %p -> %d\n", c->name, ptr, context);
-
- return entry->context;
-};
-
-/**
- * i2o_cntxt_list_remove - Remove a pointer from the context list
- * @c: controller to which the context list belong
- * @ptr: pointer which should be removed from the context list
- *
- * Removes a previously added pointer from the context list and returns
- * the matching context id.
- *
- * Returns context id on success or 0 on failure.
- */
-u32 i2o_cntxt_list_remove(struct i2o_controller * c, void *ptr)
-{
- struct i2o_context_list_element *entry;
- u32 context = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&c->context_list_lock, flags);
- list_for_each_entry(entry, &c->context_list, list)
- if (entry->ptr == ptr) {
- list_del(&entry->list);
- context = entry->context;
- kfree(entry);
- break;
- }
- spin_unlock_irqrestore(&c->context_list_lock, flags);
-
- if (!context)
- osm_warn("%s: Could not remove nonexistent ptr %p\n", c->name,
- ptr);
-
- osm_debug("%s: remove ptr from context list %d -> %p\n", c->name,
- context, ptr);
-
- return context;
-};
-
-/**
- * i2o_cntxt_list_get - Get a pointer from the context list and remove it
- * @c: controller to which the context list belong
- * @context: context id to which the pointer belong
- *
- * Returns pointer to the matching context id on success or NULL on
- * failure.
- */
-void *i2o_cntxt_list_get(struct i2o_controller *c, u32 context)
-{
- struct i2o_context_list_element *entry;
- unsigned long flags;
- void *ptr = NULL;
-
- spin_lock_irqsave(&c->context_list_lock, flags);
- list_for_each_entry(entry, &c->context_list, list)
- if (entry->context == context) {
- list_del(&entry->list);
- ptr = entry->ptr;
- kfree(entry);
- break;
- }
- spin_unlock_irqrestore(&c->context_list_lock, flags);
-
- if (!ptr)
- osm_warn("%s: context id %d not found\n", c->name, context);
-
- osm_debug("%s: get ptr from context list %d -> %p\n", c->name, context,
- ptr);
-
- return ptr;
-};
-
-/**
- * i2o_cntxt_list_get_ptr - Get a context id from the context list
- * @c: controller to which the context list belong
- * @ptr: pointer to which the context id should be fetched
- *
- * Returns context id which matches to the pointer on success or 0 on
- * failure.
- */
-u32 i2o_cntxt_list_get_ptr(struct i2o_controller * c, void *ptr)
-{
- struct i2o_context_list_element *entry;
- u32 context = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&c->context_list_lock, flags);
- list_for_each_entry(entry, &c->context_list, list)
- if (entry->ptr == ptr) {
- context = entry->context;
- break;
- }
- spin_unlock_irqrestore(&c->context_list_lock, flags);
-
- if (!context)
- osm_warn("%s: Could not find nonexistent ptr %p\n", c->name,
- ptr);
-
- osm_debug("%s: get context id from context list %p -> %d\n", c->name,
- ptr, context);
-
- return context;
-};
-#endif
-
-/**
- * i2o_iop_find - Find an I2O controller by id
- * @unit: unit number of the I2O controller to search for
- *
- * Lookup the I2O controller on the controller list.
- *
- * Returns pointer to the I2O controller on success or NULL if not found.
- */
-struct i2o_controller *i2o_find_iop(int unit)
-{
- struct i2o_controller *c;
-
- list_for_each_entry(c, &i2o_controllers, list) {
- if (c->unit == unit)
- return c;
- }
-
- return NULL;
-};
-
-/**
- * i2o_iop_find_device - Find a I2O device on an I2O controller
- * @c: I2O controller where the I2O device hangs on
- * @tid: TID of the I2O device to search for
- *
- * Searches the devices of the I2O controller for a device with TID tid and
- * returns it.
- *
- * Returns a pointer to the I2O device if found, otherwise NULL.
- */
-struct i2o_device *i2o_iop_find_device(struct i2o_controller *c, u16 tid)
-{
- struct i2o_device *dev;
-
- list_for_each_entry(dev, &c->devices, list)
- if (dev->lct_data.tid == tid)
- return dev;
-
- return NULL;
-};
-
-/**
- * i2o_quiesce_controller - quiesce controller
- * @c: controller
- *
- * Quiesce an IOP. Causes IOP to make external operation quiescent
- * (i2o 'READY' state). Internal operation of the IOP continues normally.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_iop_quiesce(struct i2o_controller *c)
-{
- struct i2o_message *msg;
- i2o_status_block *sb = c->status_block.virt;
- int rc;
-
- i2o_status_get(c);
-
- /* SysQuiesce discarded if IOP not in READY or OPERATIONAL state */
- if ((sb->iop_state != ADAPTER_STATE_READY) &&
- (sb->iop_state != ADAPTER_STATE_OPERATIONAL))
- return 0;
-
- 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_SYS_QUIESCE << 24 | HOST_TID << 12 |
- ADAPTER_TID);
-
- /* Long timeout needed for quiesce if lots of devices */
- if ((rc = i2o_msg_post_wait(c, msg, 240)))
- osm_info("%s: Unable to quiesce (status=%#x).\n", c->name, -rc);
- else
- osm_debug("%s: Quiesced.\n", c->name);
-
- i2o_status_get(c); // Entered READY state
-
- return rc;
-};
-
-/**
- * i2o_iop_enable - move controller from ready to OPERATIONAL
- * @c: I2O controller
- *
- * Enable IOP. This allows the IOP to resume external operations and
- * reverses the effect of a quiesce. Returns zero or an error code if
- * an error occurs.
- */
-static int i2o_iop_enable(struct i2o_controller *c)
-{
- struct i2o_message *msg;
- i2o_status_block *sb = c->status_block.virt;
- int rc;
-
- i2o_status_get(c);
-
- /* Enable only allowed on READY state */
- if (sb->iop_state != ADAPTER_STATE_READY)
- return -EINVAL;
-
- 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_SYS_ENABLE << 24 | HOST_TID << 12 |
- ADAPTER_TID);
-
- /* How long of a timeout do we need? */
- if ((rc = i2o_msg_post_wait(c, msg, 240)))
- osm_err("%s: Could not enable (status=%#x).\n", c->name, -rc);
- else
- osm_debug("%s: Enabled.\n", c->name);
-
- i2o_status_get(c); // entered OPERATIONAL state
-
- return rc;
-};
-
-/**
- * i2o_iop_quiesce_all - Quiesce all I2O controllers on the system
- *
- * Quiesce all I2O controllers which are connected to the system.
- */
-static inline void i2o_iop_quiesce_all(void)
-{
- struct i2o_controller *c, *tmp;
-
- list_for_each_entry_safe(c, tmp, &i2o_controllers, list) {
- if (!c->no_quiesce)
- i2o_iop_quiesce(c);
- }
-};
-
-/**
- * i2o_iop_enable_all - Enables all controllers on the system
- *
- * Enables all I2O controllers which are connected to the system.
- */
-static inline void i2o_iop_enable_all(void)
-{
- struct i2o_controller *c, *tmp;
-
- list_for_each_entry_safe(c, tmp, &i2o_controllers, list)
- i2o_iop_enable(c);
-};
-
-/**
- * i2o_clear_controller - Bring I2O controller into HOLD state
- * @c: controller
- *
- * Clear an IOP to HOLD state, ie. terminate external operations, clear all
- * input queues and prepare for a system restart. IOP's internal operation
- * continues normally and the outbound queue is alive. The IOP is not
- * expected to rebuild its LCT.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_iop_clear(struct i2o_controller *c)
-{
- struct i2o_message *msg;
- int rc;
-
- msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
- if (IS_ERR(msg))
- return PTR_ERR(msg);
-
- /* Quiesce all IOPs first */
- i2o_iop_quiesce_all();
-
- msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
- msg->u.head[1] =
- cpu_to_le32(I2O_CMD_ADAPTER_CLEAR << 24 | HOST_TID << 12 |
- ADAPTER_TID);
-
- if ((rc = i2o_msg_post_wait(c, msg, 30)))
- osm_info("%s: Unable to clear (status=%#x).\n", c->name, -rc);
- else
- osm_debug("%s: Cleared.\n", c->name);
-
- /* Enable all IOPs */
- i2o_iop_enable_all();
-
- return rc;
-}
-
-/**
- * i2o_iop_init_outbound_queue - setup the outbound message queue
- * @c: I2O controller
- *
- * Clear and (re)initialize IOP's outbound queue and post the message
- * frames to the IOP.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_iop_init_outbound_queue(struct i2o_controller *c)
-{
- u32 m;
- volatile u8 *status = c->status.virt;
- struct i2o_message *msg;
- ulong timeout;
- int i;
-
- osm_debug("%s: Initializing Outbound Queue...\n", c->name);
-
- memset(c->status.virt, 0, 4);
-
- 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(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6);
- msg->u.head[1] =
- cpu_to_le32(I2O_CMD_OUTBOUND_INIT << 24 | HOST_TID << 12 |
- ADAPTER_TID);
- msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
- msg->u.s.tcntxt = cpu_to_le32(0x00000000);
- msg->body[0] = cpu_to_le32(PAGE_SIZE);
- /* Outbound msg frame size in words and Initcode */
- msg->body[1] = cpu_to_le32(I2O_OUTBOUND_MSG_FRAME_SIZE << 16 | 0x80);
- msg->body[2] = cpu_to_le32(0xd0000004);
- msg->body[3] = cpu_to_le32(i2o_dma_low(c->status.phys));
- msg->body[4] = cpu_to_le32(i2o_dma_high(c->status.phys));
-
- i2o_msg_post(c, msg);
-
- timeout = jiffies + I2O_TIMEOUT_INIT_OUTBOUND_QUEUE * HZ;
- while (*status <= I2O_CMD_IN_PROGRESS) {
- if (time_after(jiffies, timeout)) {
- osm_warn("%s: Timeout Initializing\n", c->name);
- return -ETIMEDOUT;
- }
- schedule_timeout_uninterruptible(1);
- }
-
- m = c->out_queue.phys;
-
- /* Post frames */
- for (i = 0; i < I2O_MAX_OUTBOUND_MSG_FRAMES; i++) {
- i2o_flush_reply(c, m);
- udelay(1); /* Promise */
- m += I2O_OUTBOUND_MSG_FRAME_SIZE * sizeof(u32);
- }
-
- return 0;
-}
-
-/**
- * i2o_iop_reset - reset an I2O controller
- * @c: controller to reset
- *
- * Reset the IOP into INIT state and wait until IOP gets into RESET state.
- * Terminate all external operations, clear IOP's inbound and outbound
- * queues, terminate all DDMs, and reload the IOP's operating environment
- * and all local DDMs. The IOP rebuilds its LCT.
- */
-static int i2o_iop_reset(struct i2o_controller *c)
-{
- volatile u8 *status = c->status.virt;
- struct i2o_message *msg;
- unsigned long timeout;
- i2o_status_block *sb = c->status_block.virt;
- int rc = 0;
-
- osm_debug("%s: Resetting controller\n", c->name);
-
- msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
- if (IS_ERR(msg))
- return PTR_ERR(msg);
-
- memset(c->status_block.virt, 0, 8);
-
- /* Quiesce all IOPs first */
- i2o_iop_quiesce_all();
-
- msg->u.head[0] = cpu_to_le32(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_0);
- msg->u.head[1] =
- cpu_to_le32(I2O_CMD_ADAPTER_RESET << 24 | HOST_TID << 12 |
- ADAPTER_TID);
- msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
- msg->u.s.tcntxt = cpu_to_le32(0x00000000);
- msg->body[0] = cpu_to_le32(0x00000000);
- msg->body[1] = cpu_to_le32(0x00000000);
- msg->body[2] = cpu_to_le32(i2o_dma_low(c->status.phys));
- msg->body[3] = cpu_to_le32(i2o_dma_high(c->status.phys));
-
- i2o_msg_post(c, msg);
-
- /* Wait for a reply */
- timeout = jiffies + I2O_TIMEOUT_RESET * HZ;
- while (!*status) {
- if (time_after(jiffies, timeout))
- break;
-
- schedule_timeout_uninterruptible(1);
- }
-
- switch (*status) {
- case I2O_CMD_REJECTED:
- osm_warn("%s: IOP reset rejected\n", c->name);
- rc = -EPERM;
- break;
-
- case I2O_CMD_IN_PROGRESS:
- /*
- * Once the reset is sent, the IOP goes into the INIT state
- * which is indeterminate. We need to wait until the IOP has
- * rebooted before we can let the system talk to it. We read
- * the inbound Free_List until a message is available. If we
- * can't read one in the given amount of time, we assume the
- * IOP could not reboot properly.
- */
- osm_debug("%s: Reset in progress, waiting for reboot...\n",
- c->name);
-
- while (IS_ERR(msg = i2o_msg_get_wait(c, I2O_TIMEOUT_RESET))) {
- if (time_after(jiffies, timeout)) {
- osm_err("%s: IOP reset timeout.\n", c->name);
- rc = PTR_ERR(msg);
- goto exit;
- }
- schedule_timeout_uninterruptible(1);
- }
- i2o_msg_nop(c, msg);
-
- /* from here all quiesce commands are safe */
- c->no_quiesce = 0;
-
- /* verify if controller is in state RESET */
- i2o_status_get(c);
-
- if (!c->promise && (sb->iop_state != ADAPTER_STATE_RESET))
- osm_warn("%s: reset completed, but adapter not in RESET"
- " state.\n", c->name);
- else
- osm_debug("%s: reset completed.\n", c->name);
-
- break;
-
- default:
- osm_err("%s: IOP reset timeout.\n", c->name);
- rc = -ETIMEDOUT;
- break;
- }
-
- exit:
- /* Enable all IOPs */
- i2o_iop_enable_all();
-
- return rc;
-};
-
-/**
- * i2o_iop_activate - Bring controller up to HOLD
- * @c: controller
- *
- * This function brings an I2O controller into HOLD state. The adapter
- * is reset if necessary and then the queues and resource table are read.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_iop_activate(struct i2o_controller *c)
-{
- i2o_status_block *sb = c->status_block.virt;
- int rc;
- int state;
-
- /* In INIT state, Wait Inbound Q to initialize (in i2o_status_get) */
- /* In READY state, Get status */
-
- rc = i2o_status_get(c);
- if (rc) {
- osm_info("%s: Unable to obtain status, attempting a reset.\n",
- c->name);
- rc = i2o_iop_reset(c);
- if (rc)
- return rc;
- }
-
- if (sb->i2o_version > I2OVER15) {
- osm_err("%s: Not running version 1.5 of the I2O Specification."
- "\n", c->name);
- return -ENODEV;
- }
-
- switch (sb->iop_state) {
- case ADAPTER_STATE_FAULTED:
- osm_err("%s: hardware fault\n", c->name);
- return -EFAULT;
-
- case ADAPTER_STATE_READY:
- case ADAPTER_STATE_OPERATIONAL:
- case ADAPTER_STATE_HOLD:
- case ADAPTER_STATE_FAILED:
- osm_debug("%s: already running, trying to reset...\n", c->name);
- rc = i2o_iop_reset(c);
- if (rc)
- return rc;
- }
-
- /* preserve state */
- state = sb->iop_state;
-
- rc = i2o_iop_init_outbound_queue(c);
- if (rc)
- return rc;
-
- /* if adapter was not in RESET state clear now */
- if (state != ADAPTER_STATE_RESET)
- i2o_iop_clear(c);
-
- i2o_status_get(c);
-
- if (sb->iop_state != ADAPTER_STATE_HOLD) {
- osm_err("%s: failed to bring IOP into HOLD state\n", c->name);
- return -EIO;
- }
-
- return i2o_hrt_get(c);
-};
-
-static void i2o_res_alloc(struct i2o_controller *c, unsigned long flags)
-{
- i2o_status_block *sb = c->status_block.virt;
- struct resource *res = &c->mem_resource;
- resource_size_t size, align;
- int err;
-
- res->name = c->pdev->bus->name;
- res->flags = flags;
- res->start = 0;
- res->end = 0;
- osm_info("%s: requires private memory resources.\n", c->name);
-
- if (flags & IORESOURCE_MEM) {
- size = sb->desired_mem_size;
- align = 1 << 20; /* unspecified, use 1Mb and play safe */
- } else {
- size = sb->desired_io_size;
- align = 1 << 12; /* unspecified, use 4Kb and play safe */
- }
-
- err = pci_bus_alloc_resource(c->pdev->bus, res, size, align, 0, 0,
- NULL, NULL);
- if (err < 0)
- return;
-
- if (flags & IORESOURCE_MEM) {
- c->mem_alloc = 1;
- sb->current_mem_size = resource_size(res);
- sb->current_mem_base = res->start;
- } else if (flags & IORESOURCE_IO) {
- c->io_alloc = 1;
- sb->current_io_size = resource_size(res);
- sb->current_io_base = res->start;
- }
- osm_info("%s: allocated PCI space %pR\n", c->name, res);
-}
-
-/**
- * i2o_iop_systab_set - Set the I2O System Table of the specified IOP
- * @c: I2O controller to which the system table should be send
- *
- * Before the systab could be set i2o_systab_build() must be called.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_iop_systab_set(struct i2o_controller *c)
-{
- struct i2o_message *msg;
- i2o_status_block *sb = c->status_block.virt;
- struct device *dev = &c->pdev->dev;
- int rc;
-
- if (sb->current_mem_size < sb->desired_mem_size)
- i2o_res_alloc(c, IORESOURCE_MEM);
-
- if (sb->current_io_size < sb->desired_io_size)
- i2o_res_alloc(c, IORESOURCE_IO);
-
- msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
- if (IS_ERR(msg))
- return PTR_ERR(msg);
-
- i2o_systab.phys = dma_map_single(dev, i2o_systab.virt, i2o_systab.len,
- PCI_DMA_TODEVICE);
- if (!i2o_systab.phys) {
- i2o_msg_nop(c, msg);
- return -ENOMEM;
- }
-
- msg->u.head[0] = cpu_to_le32(I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6);
- msg->u.head[1] =
- cpu_to_le32(I2O_CMD_SYS_TAB_SET << 24 | HOST_TID << 12 |
- ADAPTER_TID);
-
- /*
- * Provide three SGL-elements:
- * System table (SysTab), Private memory space declaration and
- * Private i/o space declaration
- */
-
- msg->body[0] = cpu_to_le32(c->unit + 2);
- msg->body[1] = cpu_to_le32(0x00000000);
- msg->body[2] = cpu_to_le32(0x54000000 | i2o_systab.len);
- msg->body[3] = cpu_to_le32(i2o_systab.phys);
- msg->body[4] = cpu_to_le32(0x54000000 | sb->current_mem_size);
- msg->body[5] = cpu_to_le32(sb->current_mem_base);
- msg->body[6] = cpu_to_le32(0xd4000000 | sb->current_io_size);
- msg->body[6] = cpu_to_le32(sb->current_io_base);
-
- rc = i2o_msg_post_wait(c, msg, 120);
-
- dma_unmap_single(dev, i2o_systab.phys, i2o_systab.len,
- PCI_DMA_TODEVICE);
-
- if (rc < 0)
- osm_err("%s: Unable to set SysTab (status=%#x).\n", c->name,
- -rc);
- else
- osm_debug("%s: SysTab set.\n", c->name);
-
- return rc;
-}
-
-/**
- * i2o_iop_online - Bring a controller online into OPERATIONAL state.
- * @c: I2O controller
- *
- * Send the system table and enable the I2O controller.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_iop_online(struct i2o_controller *c)
-{
- int rc;
-
- rc = i2o_iop_systab_set(c);
- if (rc)
- return rc;
-
- /* In READY state */
- osm_debug("%s: Attempting to enable...\n", c->name);
- rc = i2o_iop_enable(c);
- if (rc)
- return rc;
-
- return 0;
-};
-
-/**
- * i2o_iop_remove - Remove the I2O controller from the I2O core
- * @c: I2O controller
- *
- * Remove the I2O controller from the I2O core. If devices are attached to
- * the controller remove these also and finally reset the controller.
- */
-void i2o_iop_remove(struct i2o_controller *c)
-{
- struct i2o_device *dev, *tmp;
-
- osm_debug("%s: deleting controller\n", c->name);
-
- i2o_driver_notify_controller_remove_all(c);
-
- list_del(&c->list);
-
- list_for_each_entry_safe(dev, tmp, &c->devices, list)
- i2o_device_remove(dev);
-
- device_del(&c->device);
-
- /* Ask the IOP to switch to RESET state */
- i2o_iop_reset(c);
-}
-
-/**
- * i2o_systab_build - Build system table
- *
- * The system table contains information about all the IOPs in the system
- * (duh) and is used by the Executives on the IOPs to establish peer2peer
- * connections. We're not supporting peer2peer at the moment, but this
- * will be needed down the road for things like lan2lan forwarding.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_systab_build(void)
-{
- struct i2o_controller *c, *tmp;
- int num_controllers = 0;
- u32 change_ind = 0;
- int count = 0;
- struct i2o_sys_tbl *systab = i2o_systab.virt;
-
- list_for_each_entry_safe(c, tmp, &i2o_controllers, list)
- num_controllers++;
-
- if (systab) {
- change_ind = systab->change_ind;
- kfree(i2o_systab.virt);
- }
-
- /* Header + IOPs */
- i2o_systab.len = sizeof(struct i2o_sys_tbl) + num_controllers *
- sizeof(struct i2o_sys_tbl_entry);
-
- systab = i2o_systab.virt = kzalloc(i2o_systab.len, GFP_KERNEL);
- if (!systab) {
- osm_err("unable to allocate memory for System Table\n");
- return -ENOMEM;
- }
-
- systab->version = I2OVERSION;
- systab->change_ind = change_ind + 1;
-
- list_for_each_entry_safe(c, tmp, &i2o_controllers, list) {
- i2o_status_block *sb;
-
- if (count >= num_controllers) {
- osm_err("controller added while building system table"
- "\n");
- break;
- }
-
- sb = c->status_block.virt;
-
- /*
- * Get updated IOP state so we have the latest information
- *
- * We should delete the controller at this point if it
- * doesn't respond since if it's not on the system table
- * it is techninically not part of the I2O subsystem...
- */
- if (unlikely(i2o_status_get(c))) {
- osm_err("%s: Deleting b/c could not get status while "
- "attempting to build system table\n", c->name);
- i2o_iop_remove(c);
- continue; // try the next one
- }
-
- systab->iops[count].org_id = sb->org_id;
- systab->iops[count].iop_id = c->unit + 2;
- systab->iops[count].seg_num = 0;
- systab->iops[count].i2o_version = sb->i2o_version;
- systab->iops[count].iop_state = sb->iop_state;
- systab->iops[count].msg_type = sb->msg_type;
- systab->iops[count].frame_size = sb->inbound_frame_size;
- systab->iops[count].last_changed = change_ind;
- systab->iops[count].iop_capabilities = sb->iop_capabilities;
- systab->iops[count].inbound_low =
- i2o_dma_low(c->base.phys + I2O_IN_PORT);
- systab->iops[count].inbound_high =
- i2o_dma_high(c->base.phys + I2O_IN_PORT);
-
- count++;
- }
-
- systab->num_entries = count;
-
- return 0;
-};
-
-/**
- * i2o_parse_hrt - Parse the hardware resource table.
- * @c: I2O controller
- *
- * We don't do anything with it except dumping it (in debug mode).
- *
- * Returns 0.
- */
-static int i2o_parse_hrt(struct i2o_controller *c)
-{
- i2o_dump_hrt(c);
- return 0;
-};
-
-/**
- * i2o_status_get - Get the status block from the I2O controller
- * @c: I2O controller
- *
- * Issue a status query on the controller. This updates the attached
- * status block. The status block could then be accessed through
- * c->status_block.
- *
- * Returns 0 on success or negative error code on failure.
- */
-int i2o_status_get(struct i2o_controller *c)
-{
- struct i2o_message *msg;
- volatile u8 *status_block;
- unsigned long timeout;
-
- status_block = (u8 *) c->status_block.virt;
- memset(c->status_block.virt, 0, sizeof(i2o_status_block));
-
- 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(NINE_WORD_MSG_SIZE | SGL_OFFSET_0);
- msg->u.head[1] =
- cpu_to_le32(I2O_CMD_STATUS_GET << 24 | HOST_TID << 12 |
- ADAPTER_TID);
- msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
- msg->u.s.tcntxt = cpu_to_le32(0x00000000);
- msg->body[0] = cpu_to_le32(0x00000000);
- msg->body[1] = cpu_to_le32(0x00000000);
- msg->body[2] = cpu_to_le32(i2o_dma_low(c->status_block.phys));
- msg->body[3] = cpu_to_le32(i2o_dma_high(c->status_block.phys));
- msg->body[4] = cpu_to_le32(sizeof(i2o_status_block)); /* always 88 bytes */
-
- i2o_msg_post(c, msg);
-
- /* Wait for a reply */
- timeout = jiffies + I2O_TIMEOUT_STATUS_GET * HZ;
- while (status_block[87] != 0xFF) {
- if (time_after(jiffies, timeout)) {
- osm_err("%s: Get status timeout.\n", c->name);
- return -ETIMEDOUT;
- }
-
- schedule_timeout_uninterruptible(1);
- }
-
-#ifdef DEBUG
- i2o_debug_state(c);
-#endif
-
- return 0;
-}
-
-/*
- * i2o_hrt_get - Get the Hardware Resource Table from the I2O controller
- * @c: I2O controller from which the HRT should be fetched
- *
- * The HRT contains information about possible hidden devices but is
- * mostly useless to us.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int i2o_hrt_get(struct i2o_controller *c)
-{
- int rc;
- int i;
- i2o_hrt *hrt = c->hrt.virt;
- u32 size = sizeof(i2o_hrt);
- struct device *dev = &c->pdev->dev;
-
- for (i = 0; i < I2O_HRT_GET_TRIES; i++) {
- struct i2o_message *msg;
-
- 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(SIX_WORD_MSG_SIZE | SGL_OFFSET_4);
- msg->u.head[1] =
- cpu_to_le32(I2O_CMD_HRT_GET << 24 | HOST_TID << 12 |
- ADAPTER_TID);
- msg->body[0] = cpu_to_le32(0xd0000000 | c->hrt.len);
- msg->body[1] = cpu_to_le32(c->hrt.phys);
-
- rc = i2o_msg_post_wait_mem(c, msg, 20, &c->hrt);
-
- if (rc < 0) {
- osm_err("%s: Unable to get HRT (status=%#x)\n", c->name,
- -rc);
- return rc;
- }
-
- size = hrt->num_entries * hrt->entry_len << 2;
- if (size > c->hrt.len) {
- if (i2o_dma_realloc(dev, &c->hrt, size))
- return -ENOMEM;
- else
- hrt = c->hrt.virt;
- } else
- return i2o_parse_hrt(c);
- }
-
- osm_err("%s: Unable to get HRT after %d tries, giving up\n", c->name,
- I2O_HRT_GET_TRIES);
-
- return -EBUSY;
-}
-
-/**
- * i2o_iop_release - release the memory for a I2O controller
- * @dev: I2O controller which should be released
- *
- * Release the allocated memory. This function is called if refcount of
- * device reaches 0 automatically.
- */
-static void i2o_iop_release(struct device *dev)
-{
- struct i2o_controller *c = to_i2o_controller(dev);
-
- i2o_iop_free(c);
-};
-
-/**
- * i2o_iop_alloc - Allocate and initialize a i2o_controller struct
- *
- * Allocate the necessary memory for a i2o_controller struct and
- * initialize the lists and message mempool.
- *
- * Returns a pointer to the I2O controller or a negative error code on
- * failure.
- */
-struct i2o_controller *i2o_iop_alloc(void)
-{
- static int unit = 0; /* 0 and 1 are NULL IOP and Local Host */
- struct i2o_controller *c;
- char poolname[32];
-
- c = kzalloc(sizeof(*c), GFP_KERNEL);
- if (!c) {
- osm_err("i2o: Insufficient memory to allocate a I2O controller."
- "\n");
- return ERR_PTR(-ENOMEM);
- }
-
- c->unit = unit++;
- sprintf(c->name, "iop%d", c->unit);
-
- snprintf(poolname, sizeof(poolname), "i2o_%s_msg_inpool", c->name);
- if (i2o_pool_alloc
- (&c->in_msg, poolname, I2O_INBOUND_MSG_FRAME_SIZE * 4 + sizeof(u32),
- I2O_MSG_INPOOL_MIN)) {
- kfree(c);
- return ERR_PTR(-ENOMEM);
- };
-
- INIT_LIST_HEAD(&c->devices);
- spin_lock_init(&c->lock);
- mutex_init(&c->lct_lock);
-
- device_initialize(&c->device);
-
- c->device.release = &i2o_iop_release;
-
- dev_set_name(&c->device, "iop%d", c->unit);
-
-#if BITS_PER_LONG == 64
- spin_lock_init(&c->context_list_lock);
- atomic_set(&c->context_list_counter, 0);
- INIT_LIST_HEAD(&c->context_list);
-#endif
-
- return c;
-};
-
-/**
- * i2o_iop_add - Initialize the I2O controller and add him to the I2O core
- * @c: controller
- *
- * Initialize the I2O controller and if no error occurs add him to the I2O
- * core.
- *
- * Returns 0 on success or negative error code on failure.
- */
-int i2o_iop_add(struct i2o_controller *c)
-{
- int rc;
-
- if ((rc = device_add(&c->device))) {
- osm_err("%s: could not add controller\n", c->name);
- goto iop_reset;
- }
-
- osm_info("%s: Activating I2O controller...\n", c->name);
- osm_info("%s: This may take a few minutes if there are many devices\n",
- c->name);
-
- if ((rc = i2o_iop_activate(c))) {
- osm_err("%s: could not activate controller\n", c->name);
- goto device_del;
- }
-
- osm_debug("%s: building sys table...\n", c->name);
-
- if ((rc = i2o_systab_build()))
- goto device_del;
-
- osm_debug("%s: online controller...\n", c->name);
-
- if ((rc = i2o_iop_online(c)))
- goto device_del;
-
- osm_debug("%s: getting LCT...\n", c->name);
-
- if ((rc = i2o_exec_lct_get(c)))
- goto device_del;
-
- list_add(&c->list, &i2o_controllers);
-
- i2o_driver_notify_controller_add_all(c);
-
- osm_info("%s: Controller added\n", c->name);
-
- return 0;
-
- device_del:
- device_del(&c->device);
-
- iop_reset:
- i2o_iop_reset(c);
-
- return rc;
-};
-
-/**
- * i2o_event_register - Turn on/off event notification for a I2O device
- * @dev: I2O device which should receive the event registration request
- * @drv: driver which want to get notified
- * @tcntxt: transaction context to use with this notifier
- * @evt_mask: mask of events
- *
- * Create and posts an event registration message to the task. No reply
- * is waited for, or expected. If you do not want further notifications,
- * call the i2o_event_register again with a evt_mask of 0.
- *
- * Returns 0 on success or negative error code on failure.
- */
-int i2o_event_register(struct i2o_device *dev, struct i2o_driver *drv,
- int tcntxt, u32 evt_mask)
-{
- struct i2o_controller *c = dev->iop;
- struct i2o_message *msg;
-
- 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(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
- msg->u.head[1] =
- cpu_to_le32(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | dev->
- lct_data.tid);
- msg->u.s.icntxt = cpu_to_le32(drv->context);
- msg->u.s.tcntxt = cpu_to_le32(tcntxt);
- msg->body[0] = cpu_to_le32(evt_mask);
-
- i2o_msg_post(c, msg);
-
- return 0;
-};
-
-/**
- * i2o_iop_init - I2O main initialization function
- *
- * Initialize the I2O drivers (OSM) functions, register the Executive OSM,
- * initialize the I2O PCI part and finally initialize I2O device stuff.
- *
- * Returns 0 on success or negative error code on failure.
- */
-static int __init i2o_iop_init(void)
-{
- int rc = 0;
-
- printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
-
- if ((rc = i2o_driver_init()))
- goto exit;
-
- if ((rc = i2o_exec_init()))
- goto driver_exit;
-
- if ((rc = i2o_pci_init()))
- goto exec_exit;
-
- return 0;
-
- exec_exit:
- i2o_exec_exit();
-
- driver_exit:
- i2o_driver_exit();
-
- exit:
- return rc;
-}
-
-/**
- * i2o_iop_exit - I2O main exit function
- *
- * Removes I2O controllers from PCI subsystem and shut down OSMs.
- */
-static void __exit i2o_iop_exit(void)
-{
- i2o_pci_exit();
- i2o_exec_exit();
- i2o_driver_exit();
-};
-
-module_init(i2o_iop_init);
-module_exit(i2o_iop_exit);
-
-MODULE_AUTHOR("Red Hat Software");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION(OSM_DESCRIPTION);
-MODULE_VERSION(OSM_VERSION);
-
-#if BITS_PER_LONG == 64
-EXPORT_SYMBOL(i2o_cntxt_list_add);
-EXPORT_SYMBOL(i2o_cntxt_list_get);
-EXPORT_SYMBOL(i2o_cntxt_list_remove);
-EXPORT_SYMBOL(i2o_cntxt_list_get_ptr);
-#endif
-EXPORT_SYMBOL(i2o_msg_get_wait);
-EXPORT_SYMBOL(i2o_find_iop);
-EXPORT_SYMBOL(i2o_iop_find_device);
-EXPORT_SYMBOL(i2o_event_register);
-EXPORT_SYMBOL(i2o_status_get);
-EXPORT_SYMBOL(i2o_controllers);
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