![Mahesh Rajashekhara](/assets/img/avatar_default.png)
- Series 7 Async. (performance) mode support added - New scatter/gather list format for Series 7 - Driver converts s/g list to a firmware suitable list for best performance on Series 7, this can be disabled with driver parameter "aac_convert_sgl" for testing purposes - New container read/write command structure for Series 7 - Fast response support for the SCSI pass-through path added - Async. status response buffer changes Signed-off-by: Mahesh Rajashekhara <Mahesh_Rajashekhara@pmc-sierra.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
1930 lines
54 KiB
C
1930 lines
54 KiB
C
/*
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* Adaptec AAC series RAID controller driver
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* (c) Copyright 2001 Red Hat Inc.
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*
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* based on the old aacraid driver that is..
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* Adaptec aacraid device driver for Linux.
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*
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* Copyright (c) 2000-2010 Adaptec, Inc.
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* 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Module Name:
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* commsup.c
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*
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* Abstract: Contain all routines that are required for FSA host/adapter
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* communication.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/completion.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <linux/kthread.h>
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#include <linux/interrupt.h>
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#include <linux/semaphore.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_cmnd.h>
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#include "aacraid.h"
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/**
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* fib_map_alloc - allocate the fib objects
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* @dev: Adapter to allocate for
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*
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* Allocate and map the shared PCI space for the FIB blocks used to
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* talk to the Adaptec firmware.
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*/
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static int fib_map_alloc(struct aac_dev *dev)
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{
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dprintk((KERN_INFO
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"allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n",
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dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue,
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AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
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dev->hw_fib_va = pci_alloc_consistent(dev->pdev,
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(dev->max_fib_size + sizeof(struct aac_fib_xporthdr))
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* (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1),
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&dev->hw_fib_pa);
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if (dev->hw_fib_va == NULL)
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return -ENOMEM;
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return 0;
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}
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/**
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* aac_fib_map_free - free the fib objects
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* @dev: Adapter to free
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*
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* Free the PCI mappings and the memory allocated for FIB blocks
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* on this adapter.
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*/
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void aac_fib_map_free(struct aac_dev *dev)
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{
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pci_free_consistent(dev->pdev,
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dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB),
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dev->hw_fib_va, dev->hw_fib_pa);
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dev->hw_fib_va = NULL;
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dev->hw_fib_pa = 0;
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}
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/**
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* aac_fib_setup - setup the fibs
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* @dev: Adapter to set up
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*
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* Allocate the PCI space for the fibs, map it and then initialise the
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* fib area, the unmapped fib data and also the free list
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*/
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int aac_fib_setup(struct aac_dev * dev)
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{
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struct fib *fibptr;
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struct hw_fib *hw_fib;
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dma_addr_t hw_fib_pa;
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int i;
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while (((i = fib_map_alloc(dev)) == -ENOMEM)
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&& (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) {
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dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1);
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dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB;
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}
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if (i<0)
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return -ENOMEM;
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/* 32 byte alignment for PMC */
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hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1);
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dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
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(hw_fib_pa - dev->hw_fib_pa));
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dev->hw_fib_pa = hw_fib_pa;
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memset(dev->hw_fib_va, 0,
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(dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) *
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(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
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/* add Xport header */
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dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
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sizeof(struct aac_fib_xporthdr));
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dev->hw_fib_pa += sizeof(struct aac_fib_xporthdr);
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hw_fib = dev->hw_fib_va;
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hw_fib_pa = dev->hw_fib_pa;
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/*
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* Initialise the fibs
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*/
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for (i = 0, fibptr = &dev->fibs[i];
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i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
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i++, fibptr++)
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{
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fibptr->flags = 0;
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fibptr->dev = dev;
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fibptr->hw_fib_va = hw_fib;
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fibptr->data = (void *) fibptr->hw_fib_va->data;
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fibptr->next = fibptr+1; /* Forward chain the fibs */
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sema_init(&fibptr->event_wait, 0);
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spin_lock_init(&fibptr->event_lock);
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hw_fib->header.XferState = cpu_to_le32(0xffffffff);
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hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size);
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fibptr->hw_fib_pa = hw_fib_pa;
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hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
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dev->max_fib_size + sizeof(struct aac_fib_xporthdr));
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hw_fib_pa = hw_fib_pa +
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dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
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}
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/*
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* Add the fib chain to the free list
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*/
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dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL;
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/*
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* Enable this to debug out of queue space
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*/
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dev->free_fib = &dev->fibs[0];
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return 0;
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}
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/**
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* aac_fib_alloc - allocate a fib
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* @dev: Adapter to allocate the fib for
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*
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* Allocate a fib from the adapter fib pool. If the pool is empty we
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* return NULL.
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*/
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struct fib *aac_fib_alloc(struct aac_dev *dev)
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{
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struct fib * fibptr;
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unsigned long flags;
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spin_lock_irqsave(&dev->fib_lock, flags);
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fibptr = dev->free_fib;
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if(!fibptr){
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spin_unlock_irqrestore(&dev->fib_lock, flags);
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return fibptr;
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}
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dev->free_fib = fibptr->next;
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spin_unlock_irqrestore(&dev->fib_lock, flags);
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/*
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* Set the proper node type code and node byte size
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*/
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fibptr->type = FSAFS_NTC_FIB_CONTEXT;
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fibptr->size = sizeof(struct fib);
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/*
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* Null out fields that depend on being zero at the start of
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* each I/O
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*/
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fibptr->hw_fib_va->header.XferState = 0;
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fibptr->flags = 0;
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fibptr->callback = NULL;
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fibptr->callback_data = NULL;
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return fibptr;
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}
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/**
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* aac_fib_free - free a fib
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* @fibptr: fib to free up
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*
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* Frees up a fib and places it on the appropriate queue
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*/
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void aac_fib_free(struct fib *fibptr)
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{
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unsigned long flags, flagsv;
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spin_lock_irqsave(&fibptr->event_lock, flagsv);
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if (fibptr->done == 2) {
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spin_unlock_irqrestore(&fibptr->event_lock, flagsv);
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return;
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}
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spin_unlock_irqrestore(&fibptr->event_lock, flagsv);
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spin_lock_irqsave(&fibptr->dev->fib_lock, flags);
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if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
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aac_config.fib_timeouts++;
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if (fibptr->hw_fib_va->header.XferState != 0) {
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printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
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(void*)fibptr,
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le32_to_cpu(fibptr->hw_fib_va->header.XferState));
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}
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fibptr->next = fibptr->dev->free_fib;
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fibptr->dev->free_fib = fibptr;
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spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags);
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}
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/**
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* aac_fib_init - initialise a fib
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* @fibptr: The fib to initialize
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*
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* Set up the generic fib fields ready for use
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*/
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void aac_fib_init(struct fib *fibptr)
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{
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struct hw_fib *hw_fib = fibptr->hw_fib_va;
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memset(&hw_fib->header, 0, sizeof(struct aac_fibhdr));
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hw_fib->header.StructType = FIB_MAGIC;
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hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size);
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hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable);
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hw_fib->header.u.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa);
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hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size);
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}
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/**
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* fib_deallocate - deallocate a fib
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* @fibptr: fib to deallocate
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*
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* Will deallocate and return to the free pool the FIB pointed to by the
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* caller.
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*/
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static void fib_dealloc(struct fib * fibptr)
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{
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struct hw_fib *hw_fib = fibptr->hw_fib_va;
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hw_fib->header.XferState = 0;
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}
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/*
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* Commuication primitives define and support the queuing method we use to
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* support host to adapter commuication. All queue accesses happen through
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* these routines and are the only routines which have a knowledge of the
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* how these queues are implemented.
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*/
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/**
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* aac_get_entry - get a queue entry
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* @dev: Adapter
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* @qid: Queue Number
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* @entry: Entry return
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* @index: Index return
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* @nonotify: notification control
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*
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* With a priority the routine returns a queue entry if the queue has free entries. If the queue
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* is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
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* returned.
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*/
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static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
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{
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struct aac_queue * q;
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unsigned long idx;
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/*
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* All of the queues wrap when they reach the end, so we check
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* to see if they have reached the end and if they have we just
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* set the index back to zero. This is a wrap. You could or off
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* the high bits in all updates but this is a bit faster I think.
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*/
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q = &dev->queues->queue[qid];
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idx = *index = le32_to_cpu(*(q->headers.producer));
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/* Interrupt Moderation, only interrupt for first two entries */
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if (idx != le32_to_cpu(*(q->headers.consumer))) {
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if (--idx == 0) {
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if (qid == AdapNormCmdQueue)
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idx = ADAP_NORM_CMD_ENTRIES;
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else
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idx = ADAP_NORM_RESP_ENTRIES;
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}
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if (idx != le32_to_cpu(*(q->headers.consumer)))
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*nonotify = 1;
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}
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if (qid == AdapNormCmdQueue) {
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if (*index >= ADAP_NORM_CMD_ENTRIES)
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*index = 0; /* Wrap to front of the Producer Queue. */
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} else {
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if (*index >= ADAP_NORM_RESP_ENTRIES)
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*index = 0; /* Wrap to front of the Producer Queue. */
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}
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/* Queue is full */
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if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) {
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printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
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qid, q->numpending);
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return 0;
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} else {
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*entry = q->base + *index;
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return 1;
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}
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}
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/**
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* aac_queue_get - get the next free QE
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* @dev: Adapter
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* @index: Returned index
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* @priority: Priority of fib
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* @fib: Fib to associate with the queue entry
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* @wait: Wait if queue full
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* @fibptr: Driver fib object to go with fib
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* @nonotify: Don't notify the adapter
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*
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* Gets the next free QE off the requested priorty adapter command
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* queue and associates the Fib with the QE. The QE represented by
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* index is ready to insert on the queue when this routine returns
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* success.
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*/
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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)
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{
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struct aac_entry * entry = NULL;
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int map = 0;
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if (qid == AdapNormCmdQueue) {
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/* if no entries wait for some if caller wants to */
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while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
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printk(KERN_ERR "GetEntries failed\n");
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}
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/*
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* Setup queue entry with a command, status and fib mapped
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*/
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entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
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map = 1;
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} else {
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while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
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/* if no entries wait for some if caller wants to */
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}
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/*
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* Setup queue entry with command, status and fib mapped
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*/
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entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
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entry->addr = hw_fib->header.SenderFibAddress;
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/* Restore adapters pointer to the FIB */
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hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */
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map = 0;
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}
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/*
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* If MapFib is true than we need to map the Fib and put pointers
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* in the queue entry.
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*/
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if (map)
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entry->addr = cpu_to_le32(fibptr->hw_fib_pa);
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return 0;
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}
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/*
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* Define the highest level of host to adapter communication routines.
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* These routines will support host to adapter FS commuication. These
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* routines have no knowledge of the commuication method used. This level
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* sends and receives FIBs. This level has no knowledge of how these FIBs
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* get passed back and forth.
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*/
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/**
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* aac_fib_send - send a fib to the adapter
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* @command: Command to send
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* @fibptr: The fib
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* @size: Size of fib data area
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* @priority: Priority of Fib
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* @wait: Async/sync select
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* @reply: True if a reply is wanted
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* @callback: Called with reply
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* @callback_data: Passed to callback
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*
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* Sends the requested FIB to the adapter and optionally will wait for a
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* response FIB. If the caller does not wish to wait for a response than
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* an event to wait on must be supplied. This event will be set when a
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* response FIB is received from the adapter.
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*/
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int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
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int priority, int wait, int reply, fib_callback callback,
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void *callback_data)
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{
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struct aac_dev * dev = fibptr->dev;
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struct hw_fib * hw_fib = fibptr->hw_fib_va;
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unsigned long flags = 0;
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unsigned long qflags;
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unsigned long mflags = 0;
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unsigned long sflags = 0;
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if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
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return -EBUSY;
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/*
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* There are 5 cases with the wait and response requested flags.
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* The only invalid cases are if the caller requests to wait and
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* does not request a response and if the caller does not want a
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* response and the Fib is not allocated from pool. If a response
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* is not requesed the Fib will just be deallocaed by the DPC
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* routine when the response comes back from the adapter. No
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* further processing will be done besides deleting the Fib. We
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* will have a debug mode where the adapter can notify the host
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* it had a problem and the host can log that fact.
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*/
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fibptr->flags = 0;
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if (wait && !reply) {
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return -EINVAL;
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} else if (!wait && reply) {
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hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected);
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FIB_COUNTER_INCREMENT(aac_config.AsyncSent);
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} else if (!wait && !reply) {
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hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected);
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FIB_COUNTER_INCREMENT(aac_config.NoResponseSent);
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} else if (wait && reply) {
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hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
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FIB_COUNTER_INCREMENT(aac_config.NormalSent);
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}
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/*
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* Map the fib into 32bits by using the fib number
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*/
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hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2);
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hw_fib->header.Handle = (u32)(fibptr - dev->fibs) + 1;
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/*
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* Set FIB state to indicate where it came from and if we want a
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* response from the adapter. Also load the command from the
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* caller.
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*
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* Map the hw fib pointer as a 32bit value
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*/
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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];
|
|
spin_lock_irqsave(q->lock, qflags);
|
|
q->numpending--;
|
|
spin_unlock_irqrestore(q->lock, qflags);
|
|
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)
|
|
{
|
|
unsigned long flags;
|
|
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.
|
|
*/
|
|
spin_lock_irqsave(&fibptr->event_lock, flags);
|
|
if (fibptr->done == 2) {
|
|
spin_unlock_irqrestore(&fibptr->event_lock, flags);
|
|
return 0;
|
|
}
|
|
spin_unlock_irqrestore(&fibptr->event_lock, flags);
|
|
|
|
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 (30*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])) {
|
|
/*
|
|
* 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:
|
|
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)) ?
|
|
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;
|
|
struct Scsi_Host *host;
|
|
struct scsi_device *dev;
|
|
struct scsi_cmnd *command;
|
|
struct scsi_cmnd *command_list;
|
|
int jafo = 0;
|
|
|
|
/*
|
|
* 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;
|
|
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, 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;
|
|
}
|