/* *	Adaptec AAC series RAID controller driver *	(c) Copyright 2001 Red Hat Inc.	<alan@redhat.com> * * based on the old aacraid driver that is.. * Adaptec aacraid device driver for Linux. * * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING.  If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * Module Name: *   linit.c * * Abstract: Linux Driver entry module for Adaptec RAID Array Controller *				 *	Provides the following driver entry points: *		aac_detect() *		aac_release() *		aac_queuecommand() *		aac_resetcommand() *		aac_biosparm() *	 */#define AAC_DRIVER_VERSION		"0.9.9ac6-TEST"#define AAC_DRIVER_BUILD_DATE		__DATE__#include <linux/module.h>#include <linux/config.h>#include <linux/kernel.h>#include <linux/init.h>#include <linux/types.h>#include <linux/sched.h>#include <linux/pci.h>#include <linux/spinlock.h>#include <linux/slab.h>#include <linux/completion.h>#include <asm/semaphore.h>#include <linux/blk.h>#include "scsi.h"#include "hosts.h"#include "aacraid.h"#include "sd.h"#define AAC_DRIVERNAME	"aacraid"MODULE_AUTHOR("Red Hat Inc and Adaptec");MODULE_DESCRIPTION("Supports Dell PERC2, 2/Si, 3/Si, 3/Di, Adaptec 2120S, 2200S, 5400S, and HP NetRAID-4M devices. http://domsch.com/linux/ or http://linux.adaptec.com");MODULE_LICENSE("GPL");MODULE_PARM(nondasd, "i");MODULE_PARM_DESC(nondasd, "Control scanning of hba for nondasd devices. 0=off, 1=on");static int nondasd=-1;struct aac_dev *aac_devices[MAXIMUM_NUM_ADAPTERS];static unsigned aac_count = 0;static int aac_cfg_major = -1;/* * Because of the way Linux names scsi devices, the order in this table has * become important.  Check for on-board Raid first, add-in cards second. * * dmb - For now we add the number of channels to this structure.   * In the future we should add a fib that reports the number of channels * for the card.  At that time we can remove the channels from here */ static struct aac_driver_ident aac_drivers[] = {	{ 0x1028, 0x0001, 0x1028, 0x0001, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 2/Si */	{ 0x1028, 0x0002, 0x1028, 0x0002, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */	{ 0x1028, 0x0003, 0x1028, 0x0003, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Si */	{ 0x1028, 0x0004, 0x1028, 0x00d0, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Si */	{ 0x1028, 0x0002, 0x1028, 0x00d1, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */	{ 0x1028, 0x0002, 0x1028, 0x00d9, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */	{ 0x1028, 0x000a, 0x1028, 0x0106, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */	{ 0x1028, 0x000a, 0x1028, 0x011b, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */	{ 0x1028, 0x000a, 0x1028, 0x0121, aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2 }, /* PERC 3/Di */	{ 0x9005, 0x0283, 0x9005, 0x0283, aac_rx_init, "aacraid",  "ADAPTEC ", "catapult        ", 2 }, /* catapult*/	{ 0x9005, 0x0284, 0x9005, 0x0284, aac_rx_init, "aacraid",  "ADAPTEC ", "tomcat          ", 2 }, /* tomcat*/	{ 0x9005, 0x0285, 0x9005, 0x0286, aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2120S   ", 1 }, /* Adaptec 2120S (Crusader)*/	{ 0x9005, 0x0285, 0x9005, 0x0285, aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2 }, /* Adaptec 2200S (Vulcan)*/	{ 0x9005, 0x0285, 0x9005, 0x0287, aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2 }, /* Adaptec 2200S (Vulcan-2m)*/	{ 0x1011, 0x0046, 0x9005, 0x0365, aac_sa_init, "aacraid",  "ADAPTEC ", "Adaptec 5400S   ", 4 }, /* Adaptec 5400S (Mustang)*/	{ 0x1011, 0x0046, 0x9005, 0x0364, aac_sa_init, "aacraid",  "ADAPTEC ", "AAC-364         ", 4 }, /* Adaptec 5400S (Mustang)*/	{ 0x1011, 0x0046, 0x9005, 0x1364, aac_sa_init, "percraid", "DELL    ", "PERCRAID        ", 4 }, /* Dell PERC2 "Quad Channel" */	{ 0x1011, 0x0046, 0x103c, 0x10c2, aac_sa_init, "hpnraid",  "HP      ", "NetRAID-4M      ", 4 }  /* HP NetRAID-4M */};#define NUM_AACTYPES	(sizeof(aac_drivers) / sizeof(struct aac_driver_ident))static int num_aacdrivers = NUM_AACTYPES;static int aac_cfg_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg);static int aac_cfg_open(struct inode * inode, struct file * file);static int aac_cfg_release(struct inode * inode,struct file * file);static struct file_operations aac_cfg_fops = {	owner: THIS_MODULE,	ioctl: aac_cfg_ioctl,	open: aac_cfg_open,	release: aac_cfg_release};static int aac_detect(Scsi_Host_Template *);static int aac_release(struct Scsi_Host *);static int aac_queuecommand(Scsi_Cmnd *, void (*CompletionRoutine)(Scsi_Cmnd *));static int aac_biosparm(Scsi_Disk *, kdev_t, int *);static int aac_procinfo(char *, char **, off_t, int, int, int);static int aac_ioctl(Scsi_Device *, int, void *);static int aac_eh_abort(Scsi_Cmnd * cmd);static int aac_eh_device_reset(Scsi_Cmnd* cmd);static int aac_eh_bus_reset(Scsi_Cmnd* cmd);static int aac_eh_reset(Scsi_Cmnd* cmd);static void aac_queuedepth(struct Scsi_Host *, Scsi_Device *);/** *	aac_detect	-	Probe for aacraid cards *	@template: SCSI driver template * *	Probe for AAC Host Adapters initialize, register, and report the  *	configuration of each AAC Host Adapter found. *	Returns the number of adapters successfully initialized and  *	registered. *	Initializes all data necessary for this particular SCSI driver. *	Notes: *	The detect routine must not call any of the mid level functions  *	to queue commands because things are not guaranteed to be set  *	up yet. The detect routine can send commands to the host adapter  *	as long as the program control will not be passed to scsi.c in  *	the processing of the command. Note especially that  *	scsi_malloc/scsi_free must not be called. * */ static int aac_detect(Scsi_Host_Template *template){	int index;	int container;	u16 vendor_id, device_id;	struct Scsi_Host *host_ptr;	struct pci_dev *dev = NULL;	struct aac_dev *aac;	struct fsa_scsi_hba *fsa_dev_ptr;	char *name = NULL;		printk(KERN_INFO "Red Hat/Adaptec aacraid driver, %s\n", AAC_DRIVER_BUILD_DATE);	/* setting up the proc directory structure */	template->proc_name = "aacraid";	for( index = 0; index != num_aacdrivers; index++ )	{		device_id = aac_drivers[index].device;		vendor_id = aac_drivers[index].vendor;		name = aac_drivers[index].name;		dprintk((KERN_DEBUG "Checking %s %x/%x/%x/%x.\n", 			name, vendor_id, device_id,			aac_drivers[index].subsystem_vendor,			aac_drivers[index].subsystem_device));		dev = NULL;		while((dev = pci_find_device(vendor_id, device_id, dev))) {			if (pci_enable_device(dev))				continue;			pci_set_master(dev);			pci_set_dma_mask(dev, 0xFFFFFFFFULL);			if((dev->subsystem_vendor != aac_drivers[index].subsystem_vendor) || 			   (dev->subsystem_device != aac_drivers[index].subsystem_device))					continue;			dprintk((KERN_DEBUG "%s device detected.\n", name));			dprintk((KERN_DEBUG "%x/%x/%x/%x.\n", vendor_id, device_id, 				aac_drivers[index].subsystem_vendor, aac_drivers[index].subsystem_device));			/* Increment the host adapter count */			aac_count++;			/*			 * scsi_register() allocates memory for a Scsi_Hosts structure and			 * links it into the linked list of host adapters. This linked list			 * contains the data for all possible <supported> scsi hosts.			 * This is similar to the Scsi_Host_Template, except that we have			 * one entry for each actual physical host adapter on the system,			 * stored as a linked list. If there are two AAC boards, then we			 * will need to make two Scsi_Host entries, but there will be only			 * one Scsi_Host_Template entry. The second argument to scsi_register()			 * specifies the size of the extra memory we want to hold any device 			 * specific information.			 */			host_ptr = scsi_register( template, sizeof(struct aac_dev) );			/* 			 * These three parameters can be used to allow for wide SCSI 			 * and for host adapters that support multiple buses.			 */			host_ptr->max_id = 17;			host_ptr->max_lun = 8;			host_ptr->max_channel = 1;			host_ptr->irq = dev->irq;		/* Adapter IRQ number */			/* host_ptr->base = ( char * )(dev->resource[0].start & ~0xff); */			host_ptr->base = dev->resource[0].start;			scsi_set_pci_device(host_ptr, dev);			dprintk((KERN_DEBUG "Device base address = 0x%lx [0x%lx].\n", host_ptr->base, dev->resource[0].start));			dprintk((KERN_DEBUG "Device irq = 0x%x.\n", dev->irq));			/*			 * The unique_id field is a unique identifier that must			 * be assigned so that we have some way of identifying			 * each host adapter properly and uniquely. For hosts 			 * that do not support more than one card in the			 * system, this does not need to be set. It is			 * initialized to zero in scsi_register(). This is the 			 * value returned as aac->id.			 */			host_ptr->unique_id = aac_count - 1;			/*			 *	This function is called after the device list has			 *	been built to find the tagged queueing depth 			 *	supported for each device.			 */			host_ptr->select_queue_depths = aac_queuedepth;			aac = (struct aac_dev *)host_ptr->hostdata;			/* attach a pointer back to Scsi_Host */			aac->scsi_host_ptr = host_ptr;				aac->pdev = dev;			aac->cardtype =  index;			aac->name = aac->scsi_host_ptr->hostt->name;			aac->id = aac->scsi_host_ptr->unique_id;			/* Initialize the ordinal number of the device to -1 */			fsa_dev_ptr = &(aac->fsa_dev);			for( container = 0; container < MAXIMUM_NUM_CONTAINERS; container++ )				fsa_dev_ptr->devno[container] = -1;			dprintk((KERN_DEBUG "Initializing Hardware...\n"));			if((*aac_drivers[index].init)(aac , host_ptr->unique_id) != 0)			{				/* device initialization failed */				printk(KERN_WARNING "aacraid: device initialization failed.\n");				scsi_unregister(host_ptr);				aac_count--;				continue;			} 			dprintk((KERN_DEBUG "%s:%d device initialization successful.\n", name, host_ptr->unique_id));			aac_get_adapter_info(aac);			if(nondasd != -1) 			{				/* someone told us how to set this on the cmdline */				aac->nondasd_support = (nondasd!=0);			}			if(aac->nondasd_support != 0){				printk(KERN_INFO "%s%d: Non-DASD support enabled\n", aac->name, aac->id);			}			dprintk((KERN_DEBUG "%s:%d options flag %04x.\n",name, host_ptr->unique_id,aac->adapter_info.options));			if(aac->nondasd_support == 1)			{				/*				 * max channel will be the physical channels plus 1 virtual channel 				 * all containers are on the virtual channel 0				 * physical channels are address by their actual physical number+1				 */				host_ptr->max_channel = aac_drivers[index].channels+1;			} else {				host_ptr->max_channel = 1; 			}			dprintk((KERN_DEBUG "Device has %d logical channels\n", host_ptr->max_channel));			aac_get_containers(aac);			aac_devices[aac_count-1] = aac;			/*			 * dmb - we may need to move these 3 parms somewhere else once			 * we get a fib that can report the actual numbers			 */			host_ptr->max_id = AAC_MAX_TARGET;			host_ptr->max_lun = AAC_MAX_LUN;						/*			 *  If we are PAE capable then our future DMA mappings			 *  (for read/write commands) are 64bit clean and don't 			 *  need bouncing. This assumes we do no other 32bit only			 *  allocations (eg fib table expands) after this point.			 */			 			if(aac->pae_support)				pci_set_dma_mask(dev, 0xFFFFFFFFFFFFFFFFUL);		}	}	if( aac_count ){		if((aac_cfg_major = register_chrdev( 0, "aac", &aac_cfg_fops))<0)			printk(KERN_WARNING "aacraid: unable to register \"aac\" device.\n");	}	template->present = aac_count; /* # of cards of this type found */	return aac_count;}/** *	aac_release	-	release SCSI host resources *	@host_ptr: SCSI host to clean up * *	Release all resources previously acquired to support a specific Host  *	Adapter and unregister the AAC Host Adapter. * *	BUGS: Does not wait for the thread it kills to die. */static int aac_release(struct Scsi_Host *host_ptr){	struct aac_dev *dev;	dprintk((KERN_DEBUG "aac_release.\n"));	dev = (struct aac_dev *)host_ptr->hostdata;	/*	 *	kill any threads we started	 */	kill_proc(dev->thread_pid, SIGKILL, 0);	wait_for_completion(&dev->aif_completion);	/*	 *	Call the comm layer to detach from this adapter	 */	aac_detach(dev);	/* Check free orderings... */	/* remove interrupt binding */	free_irq(host_ptr->irq, dev);	iounmap((void * )dev->regs.sa);	/* unregister adapter */	scsi_unregister(host_ptr);	/*	 *	FIXME: This assumes no hot plugging is going on...	 */	if( aac_cfg_major >= 0 )	{		unregister_chrdev(aac_cfg_major, "aac");		aac_cfg_major = -1;	}	return 0;}/** *	aac_queuecommand	-	queue a SCSI command *	@scsi_cmnd_ptr:	SCSI command to queue *	@CompletionRoutine: Function to call on command completion * *	Queues a command for execution by the associated Host Adapter. */ static int aac_queuecommand(Scsi_Cmnd *scsi_cmnd_ptr, void (*complete)(Scsi_Cmnd *)){	int ret;	scsi_cmnd_ptr->scsi_done = complete;	/*	 *	aac_scsi_cmd() handles command processing, setting the 	 *	result code and calling completion routine. 	 */	if((ret = aac_scsi_cmd(scsi_cmnd_ptr)) != 0)		dprintk((KERN_DEBUG "aac_scsi_cmd failed.\n"));	return ret;} /**