diff options
Diffstat (limited to 'drivers/scsi/aacraid/commsup.c')
| -rw-r--r-- | drivers/scsi/aacraid/commsup.c | 1980 |
1 files changed, 1980 insertions, 0 deletions
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c new file mode 100644 index 000000000..4da574925 --- /dev/null +++ b/drivers/scsi/aacraid/commsup.c @@ -0,0 +1,1980 @@ +/* + * Adaptec AAC series RAID controller driver + * (c) Copyright 2001 Red Hat Inc. + * + * based on the old aacraid driver that is.. + * Adaptec aacraid device driver for Linux. + * + * Copyright (c) 2000-2010 Adaptec, Inc. + * 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.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, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Module Name: + * commsup.c + * + * Abstract: Contain all routines that are required for FSA host/adapter + * communication. + * + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/pci.h> +#include <linux/spinlock.h> +#include <linux/slab.h> +#include <linux/completion.h> +#include <linux/blkdev.h> +#include <linux/delay.h> +#include <linux/kthread.h> +#include <linux/interrupt.h> +#include <linux/semaphore.h> +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_cmnd.h> + +#include "aacraid.h" + +/** + * fib_map_alloc - allocate the fib objects + * @dev: Adapter to allocate for + * + * Allocate and map the shared PCI space for the FIB blocks used to + * talk to the Adaptec firmware. + */ + +static int fib_map_alloc(struct aac_dev *dev) +{ + dprintk((KERN_INFO + "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n", + dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue, + AAC_NUM_MGT_FIB, &dev->hw_fib_pa)); + dev->hw_fib_va = pci_alloc_consistent(dev->pdev, + (dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) + * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1), + &dev->hw_fib_pa); + if (dev->hw_fib_va == NULL) + return -ENOMEM; + return 0; +} + +/** + * aac_fib_map_free - free the fib objects + * @dev: Adapter to free + * + * Free the PCI mappings and the memory allocated for FIB blocks + * on this adapter. + */ + +void aac_fib_map_free(struct aac_dev *dev) +{ + pci_free_consistent(dev->pdev, + dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), + dev->hw_fib_va, dev->hw_fib_pa); + dev->hw_fib_va = NULL; + dev->hw_fib_pa = 0; +} + +/** + * aac_fib_setup - setup the fibs + * @dev: Adapter to set up + * + * Allocate the PCI space for the fibs, map it and then initialise the + * fib area, the unmapped fib data and also the free list + */ + +int aac_fib_setup(struct aac_dev * dev) +{ + struct fib *fibptr; + struct hw_fib *hw_fib; + dma_addr_t hw_fib_pa; + int i; + + while (((i = fib_map_alloc(dev)) == -ENOMEM) + && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) { + dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1); + dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB; + } + if (i<0) + return -ENOMEM; + + /* 32 byte alignment for PMC */ + hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1); + dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + + (hw_fib_pa - dev->hw_fib_pa)); + dev->hw_fib_pa = hw_fib_pa; + memset(dev->hw_fib_va, 0, + (dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) * + (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)); + + /* add Xport header */ + dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + + sizeof(struct aac_fib_xporthdr)); + dev->hw_fib_pa += sizeof(struct aac_fib_xporthdr); + + hw_fib = dev->hw_fib_va; + hw_fib_pa = dev->hw_fib_pa; + /* + * Initialise the fibs + */ + for (i = 0, fibptr = &dev->fibs[i]; + i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); + i++, fibptr++) + { + fibptr->flags = 0; + fibptr->dev = dev; + fibptr->hw_fib_va = hw_fib; + fibptr->data = (void *) fibptr->hw_fib_va->data; + fibptr->next = fibptr+1; /* Forward chain the fibs */ + sema_init(&fibptr->event_wait, 0); + spin_lock_init(&fibptr->event_lock); + hw_fib->header.XferState = cpu_to_le32(0xffffffff); + hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size); + fibptr->hw_fib_pa = hw_fib_pa; + hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + + dev->max_fib_size + sizeof(struct aac_fib_xporthdr)); + hw_fib_pa = hw_fib_pa + + dev->max_fib_size + sizeof(struct aac_fib_xporthdr); + } + /* + * Add the fib chain to the free list + */ + dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; + /* + * Enable this to debug out of queue space + */ + dev->free_fib = &dev->fibs[0]; + return 0; +} + +/** + * aac_fib_alloc - allocate a fib + * @dev: Adapter to allocate the fib for + * + * Allocate a fib from the adapter fib pool. If the pool is empty we + * return NULL. + */ + +struct fib *aac_fib_alloc(struct aac_dev *dev) +{ + struct fib * fibptr; + unsigned long flags; + spin_lock_irqsave(&dev->fib_lock, flags); + fibptr = dev->free_fib; + if(!fibptr){ + spin_unlock_irqrestore(&dev->fib_lock, flags); + return fibptr; + } + dev->free_fib = fibptr->next; + spin_unlock_irqrestore(&dev->fib_lock, flags); + /* + * Set the proper node type code and node byte size + */ + fibptr->type = FSAFS_NTC_FIB_CONTEXT; + fibptr->size = sizeof(struct fib); + /* + * Null out fields that depend on being zero at the start of + * each I/O + */ + fibptr->hw_fib_va->header.XferState = 0; + fibptr->flags = 0; + fibptr->callback = NULL; + fibptr->callback_data = NULL; + + return fibptr; +} + +/** + * aac_fib_free - free a fib + * @fibptr: fib to free up + * + * Frees up a fib and places it on the appropriate queue + */ + +void aac_fib_free(struct fib *fibptr) +{ + unsigned long flags; + + if (fibptr->done == 2) + return; + + spin_lock_irqsave(&fibptr->dev->fib_lock, flags); + if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) + aac_config.fib_timeouts++; + if (fibptr->hw_fib_va->header.XferState != 0) { + printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", + (void*)fibptr, + le32_to_cpu(fibptr->hw_fib_va->header.XferState)); + } + fibptr->next = fibptr->dev->free_fib; + fibptr->dev->free_fib = fibptr; + spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); +} + +/** + * aac_fib_init - initialise a fib + * @fibptr: The fib to initialize + * + * Set up the generic fib fields ready for use + */ + +void aac_fib_init(struct fib *fibptr) +{ + struct hw_fib *hw_fib = fibptr->hw_fib_va; + + memset(&hw_fib->header, 0, sizeof(struct aac_fibhdr)); + hw_fib->header.StructType = FIB_MAGIC; + hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); + hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); + hw_fib->header.u.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); + hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); +} + +/** + * fib_deallocate - deallocate a fib + * @fibptr: fib to deallocate + * + * Will deallocate and return to the free pool the FIB pointed to by the + * caller. + */ + +static void fib_dealloc(struct fib * fibptr) +{ + struct hw_fib *hw_fib = fibptr->hw_fib_va; + hw_fib->header.XferState = 0; +} + +/* + * Commuication primitives define and support the queuing method we use to + * support host to adapter commuication. All queue accesses happen through + * these routines and are the only routines which have a knowledge of the + * how these queues are implemented. + */ + +/** + * aac_get_entry - get a queue entry + * @dev: Adapter + * @qid: Queue Number + * @entry: Entry return + * @index: Index return + * @nonotify: notification control + * + * With a priority the routine returns a queue entry if the queue has free entries. If the queue + * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is + * returned. + */ + +static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) +{ + struct aac_queue * q; + unsigned long idx; + + /* + * All of the queues wrap when they reach the end, so we check + * to see if they have reached the end and if they have we just + * set the index back to zero. This is a wrap. You could or off + * the high bits in all updates but this is a bit faster I think. + */ + + q = &dev->queues->queue[qid]; + + idx = *index = le32_to_cpu(*(q->headers.producer)); + /* Interrupt Moderation, only interrupt for first two entries */ + if (idx != le32_to_cpu(*(q->headers.consumer))) { + if (--idx == 0) { + if (qid == AdapNormCmdQueue) + idx = ADAP_NORM_CMD_ENTRIES; + else + idx = ADAP_NORM_RESP_ENTRIES; + } + if (idx != le32_to_cpu(*(q->headers.consumer))) + *nonotify = 1; + } + + if (qid == AdapNormCmdQueue) { + if (*index >= ADAP_NORM_CMD_ENTRIES) + *index = 0; /* Wrap to front of the Producer Queue. */ + } else { + if (*index >= ADAP_NORM_RESP_ENTRIES) + *index = 0; /* Wrap to front of the Producer Queue. */ + } + + /* Queue is full */ + if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { + printk(KERN_WARNING "Queue %d full, %u outstanding.\n", + qid, atomic_read(&q->numpending)); + return 0; + } else { + *entry = q->base + *index; + return 1; + } +} + +/** + * aac_queue_get - get the next free QE + * @dev: Adapter + * @index: Returned index + * @priority: Priority of fib + * @fib: Fib to associate with the queue entry + * @wait: Wait if queue full + * @fibptr: Driver fib object to go with fib + * @nonotify: Don't notify the adapter + * + * Gets the next free QE off the requested priorty adapter command + * queue and associates the Fib with the QE. The QE represented by + * index is ready to insert on the queue when this routine returns + * success. + */ + +int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw_fib, int wait, struct fib * fibptr, unsigned long *nonotify) +{ + struct aac_entry * entry = NULL; + int map = 0; + + if (qid == AdapNormCmdQueue) { + /* if no entries wait for some if caller wants to */ + while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { + printk(KERN_ERR "GetEntries failed\n"); + } + /* + * Setup queue entry with a command, status and fib mapped + */ + entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); + map = 1; + } else { + while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { + /* if no entries wait for some if caller wants to */ + } + /* + * Setup queue entry with command, status and fib mapped + */ + entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); + entry->addr = hw_fib->header.SenderFibAddress; + /* Restore adapters pointer to the FIB */ + hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ + map = 0; + } + /* + * If MapFib is true than we need to map the Fib and put pointers + * in the queue entry. + */ + if (map) + entry->addr = cpu_to_le32(fibptr->hw_fib_pa); + return 0; +} + +/* + * Define the highest level of host to adapter communication routines. + * These routines will support host to adapter FS commuication. These + * routines have no knowledge of the commuication method used. This level + * sends and receives FIBs. This level has no knowledge of how these FIBs + * get passed back and forth. + */ + +/** + * aac_fib_send - send a fib to the adapter + * @command: Command to send + * @fibptr: The fib + * @size: Size of fib data area + * @priority: Priority of Fib + * @wait: Async/sync select + * @reply: True if a reply is wanted + * @callback: Called with reply + * @callback_data: Passed to callback + * + * Sends the requested FIB to the adapter and optionally will wait for a + * response FIB. If the caller does not wish to wait for a response than + * an event to wait on must be supplied. This event will be set when a + * response FIB is received from the adapter. + */ + +int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, + int priority, int wait, int reply, fib_callback callback, + void *callback_data) +{ + struct aac_dev * dev = fibptr->dev; + struct hw_fib * hw_fib = fibptr->hw_fib_va; + unsigned long flags = 0; + unsigned long mflags = 0; + unsigned long sflags = 0; + + + if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) + return -EBUSY; + /* + * There are 5 cases with the wait and response requested flags. + * The only invalid cases are if the caller requests to wait and + * does not request a response and if the caller does not want a + * response and the Fib is not allocated from pool. If a response + * is not requesed the Fib will just be deallocaed by the DPC + * routine when the response comes back from the adapter. No + * further processing will be done besides deleting the Fib. We + * will have a debug mode where the adapter can notify the host + * it had a problem and the host can log that fact. + */ + fibptr->flags = 0; + if (wait && !reply) { + return -EINVAL; + } else if (!wait && reply) { + hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); + FIB_COUNTER_INCREMENT(aac_config.AsyncSent); + } else if (!wait && !reply) { + hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); + FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); + } else if (wait && reply) { + hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); + FIB_COUNTER_INCREMENT(aac_config.NormalSent); + } + /* + * Map the fib into 32bits by using the fib number + */ + + hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); + hw_fib->header.Handle = (u32)(fibptr - dev->fibs) + 1; + /* + * Set FIB state to indicate where it came from and if we want a + * response from the adapter. Also load the command from the + * caller. + * + * Map the hw fib pointer as a 32bit value + */ + hw_fib->header.Command = cpu_to_le16(command); + hw_fib->header.XferState |= cpu_to_le32(SentFromHost); + /* + * Set the size of the Fib we want to send to the adapter + */ + hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); + if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { + return -EMSGSIZE; + } + /* + * Get a queue entry connect the FIB to it and send an notify + * the adapter a command is ready. + */ + hw_fib->header.XferState |= cpu_to_le32(NormalPriority); + + /* + * Fill in the Callback and CallbackContext if we are not + * going to wait. + */ + if (!wait) { + fibptr->callback = callback; + fibptr->callback_data = callback_data; + fibptr->flags = FIB_CONTEXT_FLAG; + } + + fibptr->done = 0; + + FIB_COUNTER_INCREMENT(aac_config.FibsSent); + + dprintk((KERN_DEBUG "Fib contents:.\n")); + dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); + dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); + dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState))); + dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va)); + dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); + dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); + + if (!dev->queues) + return -EBUSY; + + if (wait) { + + spin_lock_irqsave(&dev->manage_lock, mflags); + if (dev->management_fib_count >= AAC_NUM_MGT_FIB) { + printk(KERN_INFO "No management Fibs Available:%d\n", + dev->management_fib_count); + spin_unlock_irqrestore(&dev->manage_lock, mflags); + return -EBUSY; + } + dev->management_fib_count++; + spin_unlock_irqrestore(&dev->manage_lock, mflags); + spin_lock_irqsave(&fibptr->event_lock, flags); + } + + if (dev->sync_mode) { + if (wait) + spin_unlock_irqrestore(&fibptr->event_lock, flags); + spin_lock_irqsave(&dev->sync_lock, sflags); + if (dev->sync_fib) { + list_add_tail(&fibptr->fiblink, &dev->sync_fib_list); + spin_unlock_irqrestore(&dev->sync_lock, sflags); + } else { + dev->sync_fib = fibptr; + spin_unlock_irqrestore(&dev->sync_lock, sflags); + aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB, + (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0, + NULL, NULL, NULL, NULL, NULL); + } + if (wait) { + fibptr->flags |= FIB_CONTEXT_FLAG_WAIT; + if (down_interruptible(&fibptr->event_wait)) { + fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT; + return -EFAULT; + } + return 0; + } + return -EINPROGRESS; + } + + if (aac_adapter_deliver(fibptr) != 0) { + printk(KERN_ERR "aac_fib_send: returned -EBUSY\n"); + if (wait) { + spin_unlock_irqrestore(&fibptr->event_lock, flags); + spin_lock_irqsave(&dev->manage_lock, mflags); + dev->management_fib_count--; + spin_unlock_irqrestore(&dev->manage_lock, mflags); + } + return -EBUSY; + } + + + /* + * If the caller wanted us to wait for response wait now. + */ + + if (wait) { + spin_unlock_irqrestore(&fibptr->event_lock, flags); + /* Only set for first known interruptable command */ + if (wait < 0) { + /* + * *VERY* Dangerous to time out a command, the + * assumption is made that we have no hope of + * functioning because an interrupt routing or other + * hardware failure has occurred. + */ + unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */ + while (down_trylock(&fibptr->event_wait)) { + int blink; + if (time_is_before_eq_jiffies(timeout)) { + struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue]; + atomic_dec(&q->numpending); + if (wait == -1) { + printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n" + "Usually a result of a PCI interrupt routing problem;\n" + "update mother board BIOS or consider utilizing one of\n" + "the SAFE mode kernel options (acpi, apic etc)\n"); + } + return -ETIMEDOUT; + } + if ((blink = aac_adapter_check_health(dev)) > 0) { + if (wait == -1) { + printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" + "Usually a result of a serious unrecoverable hardware problem\n", + blink); + } + return -EFAULT; + } + /* We used to udelay() here but that absorbed + * a CPU when a timeout occured. Not very + * useful. */ + cpu_relax(); + } + } else if (down_interruptible(&fibptr->event_wait)) { + /* Do nothing ... satisfy + * down_interruptible must_check */ + } + + spin_lock_irqsave(&fibptr->event_lock, flags); + if (fibptr->done == 0) { + fibptr->done = 2; /* Tell interrupt we aborted */ + spin_unlock_irqrestore(&fibptr->event_lock, flags); + return -ERESTARTSYS; + } + spin_unlock_irqrestore(&fibptr->event_lock, flags); + BUG_ON(fibptr->done == 0); + + if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) + return -ETIMEDOUT; + return 0; + } + /* + * If the user does not want a response than return success otherwise + * return pending + */ + if (reply) + return -EINPROGRESS; + else + return 0; +} + +/** + * aac_consumer_get - get the top of the queue + * @dev: Adapter + * @q: Queue + * @entry: Return entry + * + * Will return a pointer to the entry on the top of the queue requested that + * we are a consumer of, and return the address of the queue entry. It does + * not change the state of the queue. + */ + +int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) +{ + u32 index; + int status; + if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { + status = 0; + } else { + /* + * The consumer index must be wrapped if we have reached + * the end of the queue, else we just use the entry + * pointed to by the header index + */ + if (le32_to_cpu(*q->headers.consumer) >= q->entries) + index = 0; + else + index = le32_to_cpu(*q->headers.consumer); + *entry = q->base + index; + status = 1; + } + return(status); +} + +/** + * aac_consumer_free - free consumer entry + * @dev: Adapter + * @q: Queue + * @qid: Queue ident + * + * Frees up the current top of the queue we are a consumer of. If the + * queue was full notify the producer that the queue is no longer full. + */ + +void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) +{ + int wasfull = 0; + u32 notify; + + if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) + wasfull = 1; + + if (le32_to_cpu(*q->headers.consumer) >= q->entries) + *q->headers.consumer = cpu_to_le32(1); + else + le32_add_cpu(q->headers.consumer, 1); + + if (wasfull) { + switch (qid) { + + case HostNormCmdQueue: + notify = HostNormCmdNotFull; + break; + case HostNormRespQueue: + notify = HostNormRespNotFull; + break; + default: + BUG(); + return; + } + aac_adapter_notify(dev, notify); + } +} + +/** + * aac_fib_adapter_complete - complete adapter issued fib + * @fibptr: fib to complete + * @size: size of fib + * + * Will do all necessary work to complete a FIB that was sent from + * the adapter. + */ + +int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) +{ + struct hw_fib * hw_fib = fibptr->hw_fib_va; + struct aac_dev * dev = fibptr->dev; + struct aac_queue * q; + unsigned long nointr = 0; + unsigned long qflags; + + if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 || + dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { + kfree(hw_fib); + return 0; + } + + if (hw_fib->header.XferState == 0) { + if (dev->comm_interface == AAC_COMM_MESSAGE) + kfree(hw_fib); + return 0; + } + /* + * If we plan to do anything check the structure type first. + */ + if (hw_fib->header.StructType != FIB_MAGIC && + hw_fib->header.StructType != FIB_MAGIC2 && + hw_fib->header.StructType != FIB_MAGIC2_64) { + if (dev->comm_interface == AAC_COMM_MESSAGE) + kfree(hw_fib); + return -EINVAL; + } + /* + * This block handles the case where the adapter had sent us a + * command and we have finished processing the command. We + * call completeFib when we are done processing the command + * and want to send a response back to the adapter. This will + * send the completed cdb to the adapter. + */ + if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { + if (dev->comm_interface == AAC_COMM_MESSAGE) { + kfree (hw_fib); + } else { + u32 index; + hw_fib->header.XferState |= cpu_to_le32(HostProcessed); + if (size) { + size += sizeof(struct aac_fibhdr); + if (size > le16_to_cpu(hw_fib->header.SenderSize)) + return -EMSGSIZE; + hw_fib->header.Size = cpu_to_le16(size); + } + q = &dev->queues->queue[AdapNormRespQueue]; + spin_lock_irqsave(q->lock, qflags); + aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); + *(q->headers.producer) = cpu_to_le32(index + 1); + spin_unlock_irqrestore(q->lock, qflags); + if (!(nointr & (int)aac_config.irq_mod)) + aac_adapter_notify(dev, AdapNormRespQueue); + } + } else { + printk(KERN_WARNING "aac_fib_adapter_complete: " + "Unknown xferstate detected.\n"); + BUG(); + } + return 0; +} + +/** + * aac_fib_complete - fib completion handler + * @fib: FIB to complete + * + * Will do all necessary work to complete a FIB. + */ + +int aac_fib_complete(struct fib *fibptr) +{ + struct hw_fib * hw_fib = fibptr->hw_fib_va; + + /* + * Check for a fib which has already been completed + */ + + if (hw_fib->header.XferState == 0) + return 0; + /* + * If we plan to do anything check the structure type first. + */ + + if (hw_fib->header.StructType != FIB_MAGIC && + hw_fib->header.StructType != FIB_MAGIC2 && + hw_fib->header.StructType != FIB_MAGIC2_64) + return -EINVAL; + /* + * This block completes a cdb which orginated on the host and we + * just need to deallocate the cdb or reinit it. At this point the + * command is complete that we had sent to the adapter and this + * cdb could be reused. + */ + + if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && + (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) + { + fib_dealloc(fibptr); + } + else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) + { + /* + * This handles the case when the host has aborted the I/O + * to the adapter because the adapter is not responding + */ + fib_dealloc(fibptr); + } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { + fib_dealloc(fibptr); + } else { + BUG(); + } + return 0; +} + +/** + * aac_printf - handle printf from firmware + * @dev: Adapter + * @val: Message info + * + * Print a message passed to us by the controller firmware on the + * Adaptec board + */ + +void aac_printf(struct aac_dev *dev, u32 val) +{ + char *cp = dev->printfbuf; + if (dev->printf_enabled) + { + int length = val & 0xffff; + int level = (val >> 16) & 0xffff; + + /* + * The size of the printfbuf is set in port.c + * There is no variable or define for it + */ + if (length > 255) + length = 255; + if (cp[length] != 0) + cp[length] = 0; + if (level == LOG_AAC_HIGH_ERROR) + printk(KERN_WARNING "%s:%s", dev->name, cp); + else + printk(KERN_INFO "%s:%s", dev->name, cp); + } + memset(cp, 0, 256); +} + + +/** + * aac_handle_aif - Handle a message from the firmware + * @dev: Which adapter this fib is from + * @fibptr: Pointer to fibptr from adapter + * + * This routine handles a driver notify fib from the adapter and + * dispatches it to the appropriate routine for handling. + */ + +#define AIF_SNIFF_TIMEOUT (500*HZ) +static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) +{ + struct hw_fib * hw_fib = fibptr->hw_fib_va; + struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; + u32 channel, id, lun, container; + struct scsi_device *device; + enum { + NOTHING, + DELETE, + ADD, + CHANGE + } device_config_needed = NOTHING; + + /* Sniff for container changes */ + + if (!dev || !dev->fsa_dev) + return; + container = channel = id = lun = (u32)-1; + + /* + * We have set this up to try and minimize the number of + * re-configures that take place. As a result of this when + * certain AIF's come in we will set a flag waiting for another + * type of AIF before setting the re-config flag. + */ + switch (le32_to_cpu(aifcmd->command)) { + case AifCmdDriverNotify: + switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { + case AifRawDeviceRemove: + container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); + if ((container >> 28)) { + container = (u32)-1; + break; + } + channel = (container >> 24) & 0xF; + if (channel >= dev->maximum_num_channels) { + container = (u32)-1; + break; + } + id = container & 0xFFFF; + if (id >= dev->maximum_num_physicals) { + container = (u32)-1; + break; + } + lun = (container >> 16) & 0xFF; + container = (u32)-1; + channel = aac_phys_to_logical(channel); + device_config_needed = + (((__le32 *)aifcmd->data)[0] == + cpu_to_le32(AifRawDeviceRemove)) ? DELETE : ADD; + + if (device_config_needed == ADD) { + device = scsi_device_lookup( + dev->scsi_host_ptr, + channel, id, lun); + if (device) { + scsi_remove_device(device); + scsi_device_put(device); + } + } + break; + /* + * Morph or Expand complete + */ + case AifDenMorphComplete: + case AifDenVolumeExtendComplete: + container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); + if (container >= dev->maximum_num_containers) + break; + + /* + * Find the scsi_device associated with the SCSI + * address. Make sure we have the right array, and if + * so set the flag to initiate a new re-config once we + * see an AifEnConfigChange AIF come through. + */ + + if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { + device = scsi_device_lookup(dev->scsi_host_ptr, + CONTAINER_TO_CHANNEL(container), + CONTAINER_TO_ID(container), + CONTAINER_TO_LUN(container)); + if (device) { + dev->fsa_dev[container].config_needed = CHANGE; + dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; + dev->fsa_dev[container].config_waiting_stamp = jiffies; + scsi_device_put(device); + } + } + } + + /* + * If we are waiting on something and this happens to be + * that thing then set the re-configure flag. + */ + if (container != (u32)-1) { + if (container >= dev->maximum_num_containers) + break; + if ((dev->fsa_dev[container].config_waiting_on == + le32_to_cpu(*(__le32 *)aifcmd->data)) && + time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) + dev->fsa_dev[container].config_waiting_on = 0; + } else for (container = 0; + container < dev->maximum_num_containers; ++container) { + if ((dev->fsa_dev[container].config_waiting_on == + le32_to_cpu(*(__le32 *)aifcmd->data)) && + time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) + dev->fsa_dev[container].config_waiting_on = 0; + } + break; + + case AifCmdEventNotify: + switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { + case AifEnBatteryEvent: + dev->cache_protected = + (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3)); + break; + /* + * Add an Array. + */ + case AifEnAddContainer: + container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); + if (container >= dev->maximum_num_containers) + break; + dev->fsa_dev[container].config_needed = ADD; + dev->fsa_dev[container].config_waiting_on = + AifEnConfigChange; + dev->fsa_dev[container].config_waiting_stamp = jiffies; + break; + + /* + * Delete an Array. + */ + case AifEnDeleteContainer: + container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); + if (container >= dev->maximum_num_containers) + break; + dev->fsa_dev[container].config_needed = DELETE; + dev->fsa_dev[container].config_waiting_on = + AifEnConfigChange; + dev->fsa_dev[container].config_waiting_stamp = jiffies; + break; + + /* + * Container change detected. If we currently are not + * waiting on something else, setup to wait on a Config Change. + */ + case AifEnContainerChange: + container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); + if (container >= dev->maximum_num_containers) + break; + if (dev->fsa_dev[container].config_waiting_on && + time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) + break; + dev->fsa_dev[container].config_needed = CHANGE; + dev->fsa_dev[container].config_waiting_on = + AifEnConfigChange; + dev->fsa_dev[container].config_waiting_stamp = jiffies; + break; + + case AifEnConfigChange: + break; + + case AifEnAddJBOD: + case AifEnDeleteJBOD: + container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); + if ((container >> 28)) { + container = (u32)-1; + break; + } + channel = (container >> 24) & 0xF; + if (channel >= dev->maximum_num_channels) { + container = (u32)-1; + break; + } + id = container & 0xFFFF; + if (id >= dev->maximum_num_physicals) { + container = (u32)-1; + break; + } + lun = (container >> 16) & 0xFF; + container = (u32)-1; + channel = aac_phys_to_logical(channel); + device_config_needed = + (((__le32 *)aifcmd->data)[0] == + cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE; + if (device_config_needed == ADD) { + device = scsi_device_lookup(dev->scsi_host_ptr, + channel, + id, + lun); + if (device) { + scsi_remove_device(device); + scsi_device_put(device); + } + } + break; + + case AifEnEnclosureManagement: + /* + * If in JBOD mode, automatic exposure of new + * physical target to be suppressed until configured. + */ + if (dev->jbod) + break; + switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) { + case EM_DRIVE_INSERTION: + case EM_DRIVE_REMOVAL: + case EM_SES_DRIVE_INSERTION: + case EM_SES_DRIVE_REMOVAL: + container = le32_to_cpu( + ((__le32 *)aifcmd->data)[2]); + if ((container >> 28)) { + container = (u32)-1; + break; + } + channel = (container >> 24) & 0xF; + if (channel >= dev->maximum_num_channels) { + container = (u32)-1; + break; + } + id = container & 0xFFFF; + lun = (container >> 16) & 0xFF; + container = (u32)-1; + if (id >= dev->maximum_num_physicals) { + /* legacy dev_t ? */ + if ((0x2000 <= id) || lun || channel || + ((channel = (id >> 7) & 0x3F) >= + dev->maximum_num_channels)) + break; + lun = (id >> 4) & 7; + id &= 0xF; + } + channel = aac_phys_to_logical(channel); + device_config_needed = + ((((__le32 *)aifcmd->data)[3] + == cpu_to_le32(EM_DRIVE_INSERTION)) || + (((__le32 *)aifcmd->data)[3] + == cpu_to_le32(EM_SES_DRIVE_INSERTION))) ? + ADD : DELETE; + break; + } + break; + } + + /* + * If we are waiting on something and this happens to be + * that thing then set the re-configure flag. + */ + if (container != (u32)-1) { + if (container >= dev->maximum_num_containers) + break; + if ((dev->fsa_dev[container].config_waiting_on == + le32_to_cpu(*(__le32 *)aifcmd->data)) && + time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) + dev->fsa_dev[container].config_waiting_on = 0; + } else for (container = 0; + container < dev->maximum_num_containers; ++container) { + if ((dev->fsa_dev[container].config_waiting_on == + le32_to_cpu(*(__le32 *)aifcmd->data)) && + time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) + dev->fsa_dev[container].config_waiting_on = 0; + } + break; + + case AifCmdJobProgress: + /* + * These are job progress AIF's. When a Clear is being + * done on a container it is initially created then hidden from + * the OS. When the clear completes we don't get a config + * change so we monitor the job status complete on a clear then + * wait for a container change. + */ + + if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && + (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] || + ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { + for (container = 0; + container < dev->maximum_num_containers; + ++container) { + /* + * Stomp on all config sequencing for all + * containers? + */ + dev->fsa_dev[container].config_waiting_on = + AifEnContainerChange; + dev->fsa_dev[container].config_needed = ADD; + dev->fsa_dev[container].config_waiting_stamp = + jiffies; + } + } + if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && + ((__le32 *)aifcmd->data)[6] == 0 && + ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { + for (container = 0; + container < dev->maximum_num_containers; + ++container) { + /* + * Stomp on all config sequencing for all + * containers? + */ + dev->fsa_dev[container].config_waiting_on = + AifEnContainerChange; + dev->fsa_dev[container].config_needed = DELETE; + dev->fsa_dev[container].config_waiting_stamp = + jiffies; + } + } + break; + } + + container = 0; +retry_next: + if (device_config_needed == NOTHING) + for (; container < dev->maximum_num_containers; ++container) { + if ((dev->fsa_dev[container].config_waiting_on == 0) && + (dev->fsa_dev[container].config_needed != NOTHING) && + time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) { + device_config_needed = + dev->fsa_dev[container].config_needed; + dev->fsa_dev[container].config_needed = NOTHING; + channel = CONTAINER_TO_CHANNEL(container); + id = CONTAINER_TO_ID(container); + lun = CONTAINER_TO_LUN(container); + break; + } + } + if (device_config_needed == NOTHING) + return; + + /* + * If we decided that a re-configuration needs to be done, + * schedule it here on the way out the door, please close the door + * behind you. + */ + + /* + * Find the scsi_device associated with the SCSI address, + * and mark it as changed, invalidating the cache. This deals + * with changes to existing device IDs. + */ + + if (!dev || !dev->scsi_host_ptr) + return; + /* + * force reload of disk info via aac_probe_container + */ + if ((channel == CONTAINER_CHANNEL) && + (device_config_needed != NOTHING)) { + if (dev->fsa_dev[container].valid == 1) + dev->fsa_dev[container].valid = 2; + aac_probe_container(dev, container); + } + device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun); + if (device) { + switch (device_config_needed) { + case DELETE: +#if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) + scsi_remove_device(device); +#else + if (scsi_device_online(device)) { + scsi_device_set_state(device, SDEV_OFFLINE); + sdev_printk(KERN_INFO, device, + "Device offlined - %s\n", + (channel == CONTAINER_CHANNEL) ? + "array deleted" : + "enclosure services event"); + } +#endif + break; + case ADD: + if (!scsi_device_online(device)) { + sdev_printk(KERN_INFO, device, + "Device online - %s\n", + (channel == CONTAINER_CHANNEL) ? + "array created" : + "enclosure services event"); + scsi_device_set_state(device, SDEV_RUNNING); + } + /* FALLTHRU */ + case CHANGE: + if ((channel == CONTAINER_CHANNEL) + && (!dev->fsa_dev[container].valid)) { +#if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) + scsi_remove_device(device); +#else + if (!scsi_device_online(device)) + break; + scsi_device_set_state(device, SDEV_OFFLINE); + sdev_printk(KERN_INFO, device, + "Device offlined - %s\n", + "array failed"); +#endif + break; + } + scsi_rescan_device(&device->sdev_gendev); + + default: + break; + } + scsi_device_put(device); + device_config_needed = NOTHING; + } + if (device_config_needed == ADD) + scsi_add_device(dev->scsi_host_ptr, channel, id, lun); + if (channel == CONTAINER_CHANNEL) { + container++; + device_config_needed = NOTHING; + goto retry_next; + } +} + +static int _aac_reset_adapter(struct aac_dev *aac, int forced) +{ + int index, quirks; + int retval, i; + struct Scsi_Host *host; + struct scsi_device *dev; + struct scsi_cmnd *command; + struct scsi_cmnd *command_list; + int jafo = 0; + int cpu; + + /* + * Assumptions: + * - host is locked, unless called by the aacraid thread. + * (a matter of convenience, due to legacy issues surrounding + * eh_host_adapter_reset). + * - in_reset is asserted, so no new i/o is getting to the + * card. + * - The card is dead, or will be very shortly ;-/ so no new + * commands are completing in the interrupt service. + */ + host = aac->scsi_host_ptr; + scsi_block_requests(host); + aac_adapter_disable_int(aac); + if (aac->thread->pid != current->pid) { + spin_unlock_irq(host->host_lock); + kthread_stop(aac->thread); + jafo = 1; + } + + /* + * If a positive health, means in a known DEAD PANIC + * state and the adapter could be reset to `try again'. + */ + retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac)); + + if (retval) + goto out; + + /* + * Loop through the fibs, close the synchronous FIBS + */ + for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) { + struct fib *fib = &aac->fibs[index]; + if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) && + (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) { + unsigned long flagv; + spin_lock_irqsave(&fib->event_lock, flagv); + up(&fib->event_wait); + spin_unlock_irqrestore(&fib->event_lock, flagv); + schedule(); + retval = 0; + } + } + /* Give some extra time for ioctls to complete. */ + if (retval == 0) + ssleep(2); + index = aac->cardtype; + + /* + * Re-initialize the adapter, first free resources, then carefully + * apply the initialization sequence to come back again. Only risk + * is a change in Firmware dropping cache, it is assumed the caller + * will ensure that i/o is queisced and the card is flushed in that + * case. + */ + aac_fib_map_free(aac); + pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys); + aac->comm_addr = NULL; + aac->comm_phys = 0; + kfree(aac->queues); + aac->queues = NULL; + cpu = cpumask_first(cpu_online_mask); + if (aac->pdev->device == PMC_DEVICE_S6 || + aac->pdev->device == PMC_DEVICE_S7 || + aac->pdev->device == PMC_DEVICE_S8 || + aac->pdev->device == PMC_DEVICE_S9) { + if (aac->max_msix > 1) { + for (i = 0; i < aac->max_msix; i++) { + if (irq_set_affinity_hint( + aac->msixentry[i].vector, + NULL)) { + printk(KERN_ERR "%s%d: Failed to reset IRQ affinity for cpu %d\n", + aac->name, + aac->id, + cpu); + } + cpu = cpumask_next(cpu, + cpu_online_mask); + free_irq(aac->msixentry[i].vector, + &(aac->aac_msix[i])); + } + pci_disable_msix(aac->pdev); + } else { + free_irq(aac->pdev->irq, &(aac->aac_msix[0])); + } + } else { + free_irq(aac->pdev->irq, aac); + } + if (aac->msi) + pci_disable_msi(aac->pdev); + kfree(aac->fsa_dev); + aac->fsa_dev = NULL; + quirks = aac_get_driver_ident(index)->quirks; + if (quirks & AAC_QUIRK_31BIT) { + if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(31)))) || + ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(31))))) + goto out; + } else { + if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) || + ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(32))))) + goto out; + } + if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) + goto out; + if (quirks & AAC_QUIRK_31BIT) + if ((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) + goto out; + if (jafo) { + aac->thread = kthread_run(aac_command_thread, aac, "%s", + aac->name); + if (IS_ERR(aac->thread)) { + retval = PTR_ERR(aac->thread); + goto out; + } + } + (void)aac_get_adapter_info(aac); + if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) { + host->sg_tablesize = 34; + host->max_sectors = (host->sg_tablesize * 8) + 112; + } + if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) { + host->sg_tablesize = 17; + host->max_sectors = (host->sg_tablesize * 8) + 112; + } + aac_get_config_status(aac, 1); + aac_get_containers(aac); + /* + * This is where the assumption that the Adapter is quiesced + * is important. + */ + command_list = NULL; + __shost_for_each_device(dev, host) { + unsigned long flags; + spin_lock_irqsave(&dev->list_lock, flags); + list_for_each_entry(command, &dev->cmd_list, list) + if (command->SCp.phase == AAC_OWNER_FIRMWARE) { + command->SCp.buffer = (struct scatterlist *)command_list; + command_list = command; + } + spin_unlock_irqrestore(&dev->list_lock, flags); + } + while ((command = command_list)) { + command_list = (struct scsi_cmnd *)command->SCp.buffer; + command->SCp.buffer = NULL; + command->result = DID_OK << 16 + | COMMAND_COMPLETE << 8 + | SAM_STAT_TASK_SET_FULL; + command->SCp.phase = AAC_OWNER_ERROR_HANDLER; + command->scsi_done(command); + } + retval = 0; + +out: + aac->in_reset = 0; + scsi_unblock_requests(host); + if (jafo) { + spin_lock_irq(host->host_lock); + } + return retval; +} + +int aac_reset_adapter(struct aac_dev * aac, int forced) +{ + unsigned long flagv = 0; + int retval; + struct Scsi_Host * host; + + if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) + return -EBUSY; + + if (aac->in_reset) { + spin_unlock_irqrestore(&aac->fib_lock, flagv); + return -EBUSY; + } + aac->in_reset = 1; + spin_unlock_irqrestore(&aac->fib_lock, flagv); + + /* + * Wait for all commands to complete to this specific + * target (block maximum 60 seconds). Although not necessary, + * it does make us a good storage citizen. + */ + host = aac->scsi_host_ptr; + scsi_block_requests(host); + if (forced < 2) for (retval = 60; retval; --retval) { + struct scsi_device * dev; + struct scsi_cmnd * command; + int active = 0; + + __shost_for_each_device(dev, host) { + spin_lock_irqsave(&dev->list_lock, flagv); + list_for_each_entry(command, &dev->cmd_list, list) { + if (command->SCp.phase == AAC_OWNER_FIRMWARE) { + active++; + break; + } + } + spin_unlock_irqrestore(&dev->list_lock, flagv); + if (active) + break; + + } + /* + * We can exit If all the commands are complete + */ + if (active == 0) + break; + ssleep(1); + } + + /* Quiesce build, flush cache, write through mode */ + if (forced < 2) + aac_send_shutdown(aac); + spin_lock_irqsave(host->host_lock, flagv); + retval = _aac_reset_adapter(aac, forced ? forced : ((aac_check_reset != 0) && (aac_check_reset != 1))); + spin_unlock_irqrestore(host->host_lock, flagv); + + if ((forced < 2) && (retval == -ENODEV)) { + /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ + struct fib * fibctx = aac_fib_alloc(aac); + if (fibctx) { + struct aac_pause *cmd; + int status; + + aac_fib_init(fibctx); + + cmd = (struct aac_pause *) fib_data(fibctx); + + cmd->command = cpu_to_le32(VM_ContainerConfig); + cmd->type = cpu_to_le32(CT_PAUSE_IO); + cmd->timeout = cpu_to_le32(1); + cmd->min = cpu_to_le32(1); + cmd->noRescan = cpu_to_le32(1); + cmd->count = cpu_to_le32(0); + + status = aac_fib_send(ContainerCommand, + fibctx, + sizeof(struct aac_pause), + FsaNormal, + -2 /* Timeout silently */, 1, + NULL, NULL); + + if (status >= 0) + aac_fib_complete(fibctx); + /* FIB should be freed only after getting + * the response from the F/W */ + if (status != -ERESTARTSYS) + aac_fib_free(fibctx); + } + } + + return retval; +} + +int aac_check_health(struct aac_dev * aac) +{ + int BlinkLED; + unsigned long time_now, flagv = 0; + struct list_head * entry; + struct Scsi_Host * host; + + /* Extending the scope of fib_lock slightly to protect aac->in_reset */ + if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) + return 0; + + if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) { + spin_unlock_irqrestore(&aac->fib_lock, flagv); + return 0; /* OK */ + } + + aac->in_reset = 1; + + /* Fake up an AIF: + * aac_aifcmd.command = AifCmdEventNotify = 1 + * aac_aifcmd.seqnum = 0xFFFFFFFF + * aac_aifcmd.data[0] = AifEnExpEvent = 23 + * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3 + * aac.aifcmd.data[2] = AifHighPriority = 3 + * aac.aifcmd.data[3] = BlinkLED + */ + + time_now = jiffies/HZ; + entry = aac->fib_list.next; + + /* + * For each Context that is on the + * fibctxList, make a copy of the + * fib, and then set the event to wake up the + * thread that is waiting for it. + */ + while (entry != &aac->fib_list) { + /* + * Extract the fibctx + */ + struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next); + struct hw_fib * hw_fib; + struct fib * fib; + /* + * Check if the queue is getting + * backlogged + */ + if (fibctx->count > 20) { + /* + * It's *not* jiffies folks, + * but jiffies / HZ, so do not + * panic ... + */ + u32 time_last = fibctx->jiffies; + /* + * Has it been > 2 minutes + * since the last read off + * the queue? + */ + if ((time_now - time_last) > aif_timeout) { + entry = entry->next; + aac_close_fib_context(aac, fibctx); + continue; + } + } + /* + * Warning: no sleep allowed while + * holding spinlock + */ + hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC); + fib = kzalloc(sizeof(struct fib), GFP_ATOMIC); + if (fib && hw_fib) { + struct aac_aifcmd * aif; + + fib->hw_fib_va = hw_fib; + fib->dev = aac; + aac_fib_init(fib); + fib->type = FSAFS_NTC_FIB_CONTEXT; + fib->size = sizeof (struct fib); + fib->data = hw_fib->data; + aif = (struct aac_aifcmd *)hw_fib->data; + aif->command = cpu_to_le32(AifCmdEventNotify); + aif->seqnum = cpu_to_le32(0xFFFFFFFF); + ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent); + ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic); + ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority); + ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED); + + /* + * Put the FIB onto the + * fibctx's fibs + */ + list_add_tail(&fib->fiblink, &fibctx->fib_list); + fibctx->count++; + /* + * Set the event to wake up the + * thread that will waiting. + */ + up(&fibctx->wait_sem); + } else { + printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); + kfree(fib); + kfree(hw_fib); + } + entry = entry->next; + } + + spin_unlock_irqrestore(&aac->fib_lock, flagv); + + if (BlinkLED < 0) { + printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED); + goto out; + } + + printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED); + + if (!aac_check_reset || ((aac_check_reset == 1) && + (aac->supplement_adapter_info.SupportedOptions2 & + AAC_OPTION_IGNORE_RESET))) + goto out; + host = aac->scsi_host_ptr; + if (aac->thread->pid != current->pid) + spin_lock_irqsave(host->host_lock, flagv); + BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1); + if (aac->thread->pid != current->pid) + spin_unlock_irqrestore(host->host_lock, flagv); + return BlinkLED; + +out: + aac->in_reset = 0; + return BlinkLED; +} + + +/** + * aac_command_thread - command processing thread + * @dev: Adapter to monitor + * + * Waits on the commandready event in it's queue. When the event gets set + * it will pull FIBs off it's queue. It will continue to pull FIBs off + * until the queue is empty. When the queue is empty it will wait for + * more FIBs. + */ + +int aac_command_thread(void *data) +{ + struct aac_dev *dev = data; + struct hw_fib *hw_fib, *hw_newfib; + struct fib *fib, *newfib; + struct aac_fib_context *fibctx; + unsigned long flags; + DECLARE_WAITQUEUE(wait, current); + unsigned long next_jiffies = jiffies + HZ; + unsigned long next_check_jiffies = next_jiffies; + long difference = HZ; + + /* + * We can only have one thread per adapter for AIF's. + */ + if (dev->aif_thread) + return -EINVAL; + + /* + * Let the DPC know it has a place to send the AIF's to. + */ + dev->aif_thread = 1; + add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); + set_current_state(TASK_INTERRUPTIBLE); + dprintk ((KERN_INFO "aac_command_thread start\n")); + while (1) { + spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); + while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { + struct list_head *entry; + struct aac_aifcmd * aifcmd; + + set_current_state(TASK_RUNNING); + + entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; + list_del(entry); + + spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); + fib = list_entry(entry, struct fib, fiblink); + /* + * We will process the FIB here or pass it to a + * worker thread that is TBD. We Really can't + * do anything at this point since we don't have + * anything defined for this thread to do. + */ + hw_fib = fib->hw_fib_va; + memset(fib, 0, sizeof(struct fib)); + fib->type = FSAFS_NTC_FIB_CONTEXT; + fib->size = sizeof(struct fib); + fib->hw_fib_va = hw_fib; + fib->data = hw_fib->data; + fib->dev = dev; + /* + * We only handle AifRequest fibs from the adapter. + */ + aifcmd = (struct aac_aifcmd *) hw_fib->data; + if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { + /* Handle Driver Notify Events */ + aac_handle_aif(dev, fib); + *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); + aac_fib_adapter_complete(fib, (u16)sizeof(u32)); + } else { + /* The u32 here is important and intended. We are using + 32bit wrapping time to fit the adapter field */ + + u32 time_now, time_last; + unsigned long flagv; + unsigned num; + struct hw_fib ** hw_fib_pool, ** hw_fib_p; + struct fib ** fib_pool, ** fib_p; + + /* Sniff events */ + if ((aifcmd->command == + cpu_to_le32(AifCmdEventNotify)) || + (aifcmd->command == + cpu_to_le32(AifCmdJobProgress))) { + aac_handle_aif(dev, fib); + } + + time_now = jiffies/HZ; + + /* + * Warning: no sleep allowed while + * holding spinlock. We take the estimate + * and pre-allocate a set of fibs outside the + * lock. + */ + num = le32_to_cpu(dev->init->AdapterFibsSize) + / sizeof(struct hw_fib); /* some extra */ + spin_lock_irqsave(&dev->fib_lock, flagv); + entry = dev->fib_list.next; + while (entry != &dev->fib_list) { + entry = entry->next; + ++num; + } + spin_unlock_irqrestore(&dev->fib_lock, flagv); + hw_fib_pool = NULL; + fib_pool = NULL; + if (num + && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL))) + && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) { + hw_fib_p = hw_fib_pool; + fib_p = fib_pool; + while (hw_fib_p < &hw_fib_pool[num]) { + if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) { + --hw_fib_p; + break; + } + if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) { + kfree(*(--hw_fib_p)); + break; + } + } + if ((num = hw_fib_p - hw_fib_pool) == 0) { + kfree(fib_pool); + fib_pool = NULL; + kfree(hw_fib_pool); + hw_fib_pool = NULL; + } + } else { + kfree(hw_fib_pool); + hw_fib_pool = NULL; + } + spin_lock_irqsave(&dev->fib_lock, flagv); + entry = dev->fib_list.next; + /* + * For each Context that is on the + * fibctxList, make a copy of the + * fib, and then set the event to wake up the + * thread that is waiting for it. + */ + hw_fib_p = hw_fib_pool; + fib_p = fib_pool; + while (entry != &dev->fib_list) { + /* + * Extract the fibctx + */ + fibctx = list_entry(entry, struct aac_fib_context, next); + /* + * Check if the queue is getting + * backlogged + */ + if (fibctx->count > 20) + { + /* + * It's *not* jiffies folks, + * but jiffies / HZ so do not + * panic ... + */ + time_last = fibctx->jiffies; + /* + * Has it been > 2 minutes + * since the last read off + * the queue? + */ + if ((time_now - time_last) > aif_timeout) { + entry = entry->next; + aac_close_fib_context(dev, fibctx); + continue; + } + } + /* + * Warning: no sleep allowed while + * holding spinlock + */ + if (hw_fib_p < &hw_fib_pool[num]) { + hw_newfib = *hw_fib_p; + *(hw_fib_p++) = NULL; + newfib = *fib_p; + *(fib_p++) = NULL; + /* + * Make the copy of the FIB + */ + memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); + memcpy(newfib, fib, sizeof(struct fib)); + newfib->hw_fib_va = hw_newfib; + /* + * Put the FIB onto the + * fibctx's fibs + */ + list_add_tail(&newfib->fiblink, &fibctx->fib_list); + fibctx->count++; + /* + * Set the event to wake up the + * thread that is waiting. + */ + up(&fibctx->wait_sem); + } else { + printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); + } + entry = entry->next; + } + /* + * Set the status of this FIB + */ + *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); + aac_fib_adapter_complete(fib, sizeof(u32)); + spin_unlock_irqrestore(&dev->fib_lock, flagv); + /* Free up the remaining resources */ + hw_fib_p = hw_fib_pool; + fib_p = fib_pool; + while (hw_fib_p < &hw_fib_pool[num]) { + kfree(*hw_fib_p); + kfree(*fib_p); + ++fib_p; + ++hw_fib_p; + } + kfree(hw_fib_pool); + kfree(fib_pool); + } + kfree(fib); + spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); + } + /* + * There are no more AIF's + */ + spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); + + /* + * Background activity + */ + if ((time_before(next_check_jiffies,next_jiffies)) + && ((difference = next_check_jiffies - jiffies) <= 0)) { + next_check_jiffies = next_jiffies; + if (aac_check_health(dev) == 0) { + difference = ((long)(unsigned)check_interval) + * HZ; + next_check_jiffies = jiffies + difference; + } else if (!dev->queues) + break; + } + if (!time_before(next_check_jiffies,next_jiffies) + && ((difference = next_jiffies - jiffies) <= 0)) { + struct timeval now; + int ret; + + /* Don't even try to talk to adapter if its sick */ + ret = aac_check_health(dev); + if (!ret && !dev->queues) + break; + next_check_jiffies = jiffies + + ((long)(unsigned)check_interval) + * HZ; + do_gettimeofday(&now); + + /* Synchronize our watches */ + if (((1000000 - (1000000 / HZ)) > now.tv_usec) + && (now.tv_usec > (1000000 / HZ))) + difference = (((1000000 - now.tv_usec) * HZ) + + 500000) / 1000000; + else if (ret == 0) { + struct fib *fibptr; + + if ((fibptr = aac_fib_alloc(dev))) { + int status; + __le32 *info; + + aac_fib_init(fibptr); + + info = (__le32 *) fib_data(fibptr); + if (now.tv_usec > 500000) + ++now.tv_sec; + + *info = cpu_to_le32(now.tv_sec); + + status = aac_fib_send(SendHostTime, + fibptr, + sizeof(*info), + FsaNormal, + 1, 1, + NULL, + NULL); + /* Do not set XferState to zero unless + * receives a response from F/W */ + if (status >= 0) + aac_fib_complete(fibptr); + /* FIB should be freed only after + * getting the response from the F/W */ + if (status != -ERESTARTSYS) + aac_fib_free(fibptr); + } + difference = (long)(unsigned)update_interval*HZ; + } else { + /* retry shortly */ + difference = 10 * HZ; + } + next_jiffies = jiffies + difference; + if (time_before(next_check_jiffies,next_jiffies)) + difference = next_check_jiffies - jiffies; + } + if (difference <= 0) + difference = 1; + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(difference); + + if (kthread_should_stop()) + break; + } + if (dev->queues) + remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); + dev->aif_thread = 0; + return 0; +} |