415 строки
12 KiB
C
415 строки
12 KiB
C
/*
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* Adaptec AAC series RAID controller driver
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* (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
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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) 2000-2007 Adaptec, Inc. (aacraid@adaptec.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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* comminit.c
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*
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* Abstract: This supports the initialization of the host adapter commuication interface.
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* This is a platform dependent module for the pci cyclone board.
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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/pci.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/blkdev.h>
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#include <linux/completion.h>
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#include <linux/mm.h>
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#include <scsi/scsi_host.h>
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#include "aacraid.h"
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struct aac_common aac_config = {
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.irq_mod = 1
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};
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static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
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{
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unsigned char *base;
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unsigned long size, align;
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const unsigned long fibsize = 4096;
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const unsigned long printfbufsiz = 256;
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struct aac_init *init;
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dma_addr_t phys;
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size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz;
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base = pci_alloc_consistent(dev->pdev, size, &phys);
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if(base == NULL)
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{
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printk(KERN_ERR "aacraid: unable to create mapping.\n");
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return 0;
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}
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dev->comm_addr = (void *)base;
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dev->comm_phys = phys;
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dev->comm_size = size;
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dev->init = (struct aac_init *)(base + fibsize);
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dev->init_pa = phys + fibsize;
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init = dev->init;
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init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
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if (dev->max_fib_size != sizeof(struct hw_fib))
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init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
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init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION);
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init->fsrev = cpu_to_le32(dev->fsrev);
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/*
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* Adapter Fibs are the first thing allocated so that they
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* start page aligned
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*/
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dev->aif_base_va = (struct hw_fib *)base;
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init->AdapterFibsVirtualAddress = 0;
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init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
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init->AdapterFibsSize = cpu_to_le32(fibsize);
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init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
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init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
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init->InitFlags = 0;
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if (dev->comm_interface == AAC_COMM_MESSAGE) {
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init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
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dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
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}
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init->InitFlags |= cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
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INITFLAGS_DRIVER_SUPPORTS_PM);
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init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
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init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
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init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
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/*
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* Increment the base address by the amount already used
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*/
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base = base + fibsize + sizeof(struct aac_init);
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phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init));
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/*
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* Align the beginning of Headers to commalign
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*/
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align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
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base = base + align;
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phys = phys + align;
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/*
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* Fill in addresses of the Comm Area Headers and Queues
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*/
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*commaddr = base;
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init->CommHeaderAddress = cpu_to_le32((u32)phys);
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/*
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* Increment the base address by the size of the CommArea
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*/
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base = base + commsize;
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phys = phys + commsize;
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/*
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* Place the Printf buffer area after the Fast I/O comm area.
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*/
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dev->printfbuf = (void *)base;
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init->printfbuf = cpu_to_le32(phys);
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init->printfbufsiz = cpu_to_le32(printfbufsiz);
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memset(base, 0, printfbufsiz);
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return 1;
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}
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static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
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{
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q->numpending = 0;
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q->dev = dev;
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init_waitqueue_head(&q->cmdready);
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INIT_LIST_HEAD(&q->cmdq);
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init_waitqueue_head(&q->qfull);
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spin_lock_init(&q->lockdata);
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q->lock = &q->lockdata;
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q->headers.producer = (__le32 *)mem;
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q->headers.consumer = (__le32 *)(mem+1);
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*(q->headers.producer) = cpu_to_le32(qsize);
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*(q->headers.consumer) = cpu_to_le32(qsize);
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q->entries = qsize;
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}
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/**
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* aac_send_shutdown - shutdown an adapter
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* @dev: Adapter to shutdown
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*
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* This routine will send a VM_CloseAll (shutdown) request to the adapter.
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*/
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int aac_send_shutdown(struct aac_dev * dev)
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{
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struct fib * fibctx;
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struct aac_close *cmd;
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int status;
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fibctx = aac_fib_alloc(dev);
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if (!fibctx)
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return -ENOMEM;
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aac_fib_init(fibctx);
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cmd = (struct aac_close *) fib_data(fibctx);
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cmd->command = cpu_to_le32(VM_CloseAll);
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cmd->cid = cpu_to_le32(0xffffffff);
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status = aac_fib_send(ContainerCommand,
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fibctx,
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sizeof(struct aac_close),
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FsaNormal,
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-2 /* Timeout silently */, 1,
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NULL, NULL);
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if (status >= 0)
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aac_fib_complete(fibctx);
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aac_fib_free(fibctx);
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return status;
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}
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/**
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* aac_comm_init - Initialise FSA data structures
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* @dev: Adapter to initialise
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*
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* Initializes the data structures that are required for the FSA commuication
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* interface to operate.
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* Returns
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* 1 - if we were able to init the commuication interface.
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* 0 - If there were errors initing. This is a fatal error.
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*/
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static int aac_comm_init(struct aac_dev * dev)
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{
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unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
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unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
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u32 *headers;
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struct aac_entry * queues;
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unsigned long size;
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struct aac_queue_block * comm = dev->queues;
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/*
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* Now allocate and initialize the zone structures used as our
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* pool of FIB context records. The size of the zone is based
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* on the system memory size. We also initialize the mutex used
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* to protect the zone.
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*/
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spin_lock_init(&dev->fib_lock);
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/*
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* Allocate the physically contigous space for the commuication
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* queue headers.
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*/
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size = hdrsize + queuesize;
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if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
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return -ENOMEM;
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queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
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/* Adapter to Host normal priority Command queue */
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comm->queue[HostNormCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
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queues += HOST_NORM_CMD_ENTRIES;
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headers += 2;
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/* Adapter to Host high priority command queue */
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comm->queue[HostHighCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
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queues += HOST_HIGH_CMD_ENTRIES;
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headers +=2;
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/* Host to adapter normal priority command queue */
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comm->queue[AdapNormCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
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queues += ADAP_NORM_CMD_ENTRIES;
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headers += 2;
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/* host to adapter high priority command queue */
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comm->queue[AdapHighCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
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queues += ADAP_HIGH_CMD_ENTRIES;
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headers += 2;
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/* adapter to host normal priority response queue */
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comm->queue[HostNormRespQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
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queues += HOST_NORM_RESP_ENTRIES;
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headers += 2;
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/* adapter to host high priority response queue */
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comm->queue[HostHighRespQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
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queues += HOST_HIGH_RESP_ENTRIES;
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headers += 2;
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/* host to adapter normal priority response queue */
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comm->queue[AdapNormRespQueue].base = queues;
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aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
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queues += ADAP_NORM_RESP_ENTRIES;
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headers += 2;
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/* host to adapter high priority response queue */
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comm->queue[AdapHighRespQueue].base = queues;
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aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
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comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
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comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
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comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
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comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
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return 0;
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}
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struct aac_dev *aac_init_adapter(struct aac_dev *dev)
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{
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u32 status[5];
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struct Scsi_Host * host = dev->scsi_host_ptr;
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/*
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* Check the preferred comm settings, defaults from template.
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*/
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dev->max_fib_size = sizeof(struct hw_fib);
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dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
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- sizeof(struct aac_fibhdr)
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- sizeof(struct aac_write) + sizeof(struct sgentry))
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/ sizeof(struct sgentry);
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dev->comm_interface = AAC_COMM_PRODUCER;
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dev->raw_io_64 = 0;
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if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
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0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
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(status[0] == 0x00000001)) {
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if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
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dev->raw_io_64 = 1;
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if (dev->a_ops.adapter_comm &&
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(status[1] & le32_to_cpu(AAC_OPT_NEW_COMM)))
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dev->comm_interface = AAC_COMM_MESSAGE;
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if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
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(status[2] > dev->base_size)) {
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aac_adapter_ioremap(dev, 0);
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dev->base_size = status[2];
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if (aac_adapter_ioremap(dev, status[2])) {
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/* remap failed, go back ... */
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dev->comm_interface = AAC_COMM_PRODUCER;
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if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
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printk(KERN_WARNING
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"aacraid: unable to map adapter.\n");
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return NULL;
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}
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}
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}
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}
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if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
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0, 0, 0, 0, 0, 0,
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status+0, status+1, status+2, status+3, status+4))
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&& (status[0] == 0x00000001)) {
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/*
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* status[1] >> 16 maximum command size in KB
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* status[1] & 0xFFFF maximum FIB size
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* status[2] >> 16 maximum SG elements to driver
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* status[2] & 0xFFFF maximum SG elements from driver
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* status[3] & 0xFFFF maximum number FIBs outstanding
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*/
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host->max_sectors = (status[1] >> 16) << 1;
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dev->max_fib_size = status[1] & 0xFFFF;
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host->sg_tablesize = status[2] >> 16;
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dev->sg_tablesize = status[2] & 0xFFFF;
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host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
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/*
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* NOTE:
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* All these overrides are based on a fixed internal
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* knowledge and understanding of existing adapters,
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* acbsize should be set with caution.
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*/
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if (acbsize == 512) {
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host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
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dev->max_fib_size = 512;
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dev->sg_tablesize = host->sg_tablesize
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= (512 - sizeof(struct aac_fibhdr)
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- sizeof(struct aac_write) + sizeof(struct sgentry))
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/ sizeof(struct sgentry);
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host->can_queue = AAC_NUM_IO_FIB;
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} else if (acbsize == 2048) {
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host->max_sectors = 512;
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dev->max_fib_size = 2048;
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host->sg_tablesize = 65;
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dev->sg_tablesize = 81;
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host->can_queue = 512 - AAC_NUM_MGT_FIB;
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} else if (acbsize == 4096) {
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host->max_sectors = 1024;
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dev->max_fib_size = 4096;
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host->sg_tablesize = 129;
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dev->sg_tablesize = 166;
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host->can_queue = 256 - AAC_NUM_MGT_FIB;
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} else if (acbsize == 8192) {
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host->max_sectors = 2048;
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dev->max_fib_size = 8192;
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host->sg_tablesize = 257;
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dev->sg_tablesize = 337;
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host->can_queue = 128 - AAC_NUM_MGT_FIB;
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} else if (acbsize > 0) {
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printk("Illegal acbsize=%d ignored\n", acbsize);
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}
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}
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{
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if (numacb > 0) {
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if (numacb < host->can_queue)
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host->can_queue = numacb;
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else
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printk("numacb=%d ignored\n", numacb);
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}
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}
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/*
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* Ok now init the communication subsystem
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*/
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dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
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if (dev->queues == NULL) {
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printk(KERN_ERR "Error could not allocate comm region.\n");
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return NULL;
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}
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if (aac_comm_init(dev)<0){
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kfree(dev->queues);
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return NULL;
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}
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/*
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* Initialize the list of fibs
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*/
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if (aac_fib_setup(dev) < 0) {
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kfree(dev->queues);
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return NULL;
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}
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INIT_LIST_HEAD(&dev->fib_list);
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return dev;
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}
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