From 86297c41a26f18d924e64fc93321c59cbc4c48dd Mon Sep 17 00:00:00 2001 From: Thomas Bushnell Date: Mon, 26 Apr 1999 05:58:44 +0000 Subject: 1998-11-30 OKUJI Yoshinori Clean up linux emulation code to make it architecture-independent as much as possible. * linux: Renamed from linuxdev. * Makefile.in (objfiles): Add linux.o instead of linuxdev.o. (MAKE): New variable. Used for the linux.o target. * configure.in: Add AC_CHECK_TOOL(MAKE, make). * i386/i386/spl.h: Include , for compatibility with OSF Mach 3.0. Suggested by Elgin Lee . * linux/src: Renamed from linux/linux. * linux/dev: Renamed from linux/mach. * linux/Drivers.in (AC_INIT): Use dev/include/linux/autoconf.h, instead of mach/include/linux/autoconf.h. * Makefile.in (all): Target ../linux.o instead of ../linuxdev.o. * linux/dev/drivers/block/genhd.c: Include instead of . * linux/dev/drivers/net/auto_irq.c: Remove unneeded header files, and . * linux/dev/init/main.c: Many i386-dependent codes moved to ... * linux/dev/arch/i386/irq.c: ... here. * linux/dev/arch/i386/setup.c: New file. * linux/dev/arch/i386/linux_emul.h: Likewise. * linux/dev/arch/i386/glue/timer.c: Merged into sched.c. * linux/dev/arch/i386/glue/sched.c: Include instead of , and moved to ... * linux/dev/kernel/sched.c: ... here. * linux/dev/arch/i386/glue/block.c: Include and , instead of i386-dependent header files, and moved to ... * linux/dev/glue/blocl.c: ... here. * linux/dev/arch/i386/glue/net.c: Include and , instead of i386-dependent header files, and moved to ... * linux/dev/glue/net.c: ... here. * linux/dev/arch/i386/glue/misc.c: Remove `x86' and moved to ... * linux/dev/glue/misc.c: ... here. * linux/dev/arch/i386/glue/kmem.c: Moved to ... * linux/dev/glue/kmem.c: ... here. --- linux/src/drivers/scsi/hosts.c | 545 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 545 insertions(+) create mode 100644 linux/src/drivers/scsi/hosts.c (limited to 'linux/src/drivers/scsi/hosts.c') diff --git a/linux/src/drivers/scsi/hosts.c b/linux/src/drivers/scsi/hosts.c new file mode 100644 index 0000000..0764604 --- /dev/null +++ b/linux/src/drivers/scsi/hosts.c @@ -0,0 +1,545 @@ +/* + * hosts.c Copyright (C) 1992 Drew Eckhardt + * Copyright (C) 1993, 1994, 1995 Eric Youngdale + * + * mid to lowlevel SCSI driver interface + * Initial versions: Drew Eckhardt + * Subsequent revisions: Eric Youngdale + * + * + */ + + +/* + * This file contains the medium level SCSI + * host interface initialization, as well as the scsi_hosts array of SCSI + * hosts currently present in the system. + */ + +/* + * Don't import our own symbols, as this would severely mess up our + * symbol tables. + */ +#define _SCSI_SYMS_VER_ +#define __NO_VERSION__ +#include + +#include +#include +#include +#include +#include +#include + +#include "scsi.h" + +#ifndef NULL +#define NULL 0L +#endif + +#define HOSTS_C + +#include "hosts.h" + +#ifdef CONFIG_A3000_SCSI +#include "a3000.h" +#endif + +#ifdef CONFIG_A2091_SCSI +#include "a2091.h" +#endif + +#ifdef CONFIG_GVP11_SCSI +#include "gvp11.h" +#endif + +#ifdef CONFIG_ATARI_SCSI +#include "atari_scsi.h" +#endif + +#ifdef CONFIG_SCSI_ADVANSYS +#include "advansys.h" +#endif + +#ifdef CONFIG_SCSI_AHA152X +#include "aha152x.h" +#endif + +#ifdef CONFIG_SCSI_AHA1542 +#include "aha1542.h" +#endif + +#ifdef CONFIG_SCSI_AHA1740 +#include "aha1740.h" +#endif + +#ifdef CONFIG_SCSI_AIC7XXX +#include "aic7xxx.h" +#endif + +#ifdef CONFIG_SCSI_BUSLOGIC +#include "BusLogic.h" +#endif + +#ifdef CONFIG_SCSI_EATA_DMA +#include "eata_dma.h" +#endif + +#ifdef CONFIG_SCSI_EATA_PIO +#include "eata_pio.h" +#endif + +#ifdef CONFIG_SCSI_U14_34F +#include "u14-34f.h" +#endif + +#ifdef CONFIG_SCSI_FUTURE_DOMAIN +#include "fdomain.h" +#endif + +#ifdef CONFIG_SCSI_GENERIC_NCR5380 +#include "g_NCR5380.h" +#endif + +#ifdef CONFIG_SCSI_IN2000 +#include "in2000.h" +#endif + +#ifdef CONFIG_SCSI_PAS16 +#include "pas16.h" +#endif + +#ifdef CONFIG_SCSI_QLOGIC_FAS +#include "qlogicfas.h" +#endif + +#ifdef CONFIG_SCSI_QLOGIC_ISP +#include "qlogicisp.h" +#endif + +#ifdef CONFIG_SCSI_SEAGATE +#include "seagate.h" +#endif + +#ifdef CONFIG_SCSI_T128 +#include "t128.h" +#endif + +#ifdef CONFIG_SCSI_DTC3280 +#include "dtc.h" +#endif + +#ifdef CONFIG_SCSI_NCR53C7xx +#include "53c7,8xx.h" +#endif + +#ifdef CONFIG_SCSI_NCR53C8XX +#include "ncr53c8xx.h" +#endif + +#ifdef CONFIG_SCSI_ULTRASTOR +#include "ultrastor.h" +#endif + +#ifdef CONFIG_SCSI_7000FASST +#include "wd7000.h" +#endif + +#ifdef CONFIG_SCSI_EATA +#include "eata.h" +#endif + +#ifdef CONFIG_SCSI_NCR53C406A +#include "NCR53c406a.h" +#endif + +#ifdef CONFIG_SCSI_DC390T +#include "dc390.h" +#endif + +#ifdef CONFIG_SCSI_AM53C974 +#include "AM53C974.h" +#endif + +#ifdef CONFIG_SCSI_MEGARAID +#include "megaraid.h" +#endif + +#ifdef CONFIG_SCSI_PPA +#include "ppa.h" +#endif + +#ifdef CONFIG_SCSI_SUNESP +#include "esp.h" +#endif + +#ifdef CONFIG_BLK_DEV_IDESCSI +#include "ide-scsi.h" +#endif + +#ifdef CONFIG_SCSI_GDTH +#include "gdth.h" +#endif + +#ifdef CONFIG_SCSI_DEBUG +#include "scsi_debug.h" +#endif + + +/* +static const char RCSid[] = "$Header: cvs/gnumach/linux/src/drivers/scsi/Attic/hosts.c,v 1.1 1999/04/26 05:54:40 tb Exp $"; +*/ + +/* + * The scsi host entries should be in the order you wish the + * cards to be detected. A driver may appear more than once IFF + * it can deal with being detected (and therefore initialized) + * with more than one simultaneous host number, can handle being + * reentrant, etc. + * + * They may appear in any order, as each SCSI host is told which host + * number it is during detection. + */ + +/* This is a placeholder for controllers that are not configured into + * the system - we do this to ensure that the controller numbering is + * always consistent, no matter how the kernel is configured. */ + +#define NO_CONTROLLER {NULL, NULL, NULL, NULL, NULL, NULL, NULL, \ + NULL, NULL, 0, 0, 0, 0, 0, 0} + +/* + * When figure is run, we don't want to link to any object code. Since + * the macro for each host will contain function pointers, we cannot + * use it and instead must use a "blank" that does no such + * idiocy. + */ + +Scsi_Host_Template * scsi_hosts = NULL; + +static Scsi_Host_Template builtin_scsi_hosts[] = +{ +#ifdef CONFIG_AMIGA +#ifdef CONFIG_A3000_SCSI + A3000_SCSI, +#endif +#ifdef CONFIG_A2091_SCSI + A2091_SCSI, +#endif +#ifdef CONFIG_GVP11_SCSI + GVP11_SCSI, +#endif +#endif + +#ifdef CONFIG_ATARI +#ifdef CONFIG_ATARI_SCSI + ATARI_SCSI, +#endif +#endif + +#ifdef CONFIG_SCSI_ADVANSYS + ADVANSYS, +#endif +/* BusLogic must come before aha1542.c */ +#ifdef CONFIG_SCSI_BUSLOGIC + BUSLOGIC, +#endif +#ifdef CONFIG_SCSI_U14_34F + ULTRASTOR_14_34F, +#endif +#ifdef CONFIG_SCSI_ULTRASTOR + ULTRASTOR_14F, +#endif +#ifdef CONFIG_SCSI_AHA152X + AHA152X, +#endif +#ifdef CONFIG_SCSI_AHA1542 + AHA1542, +#endif +#ifdef CONFIG_SCSI_AHA1740 + AHA1740, +#endif +#ifdef CONFIG_SCSI_AIC7XXX + AIC7XXX, +#endif +#ifdef CONFIG_SCSI_FUTURE_DOMAIN + FDOMAIN_16X0, +#endif +#ifdef CONFIG_SCSI_IN2000 + IN2000, +#endif +#ifdef CONFIG_SCSI_GENERIC_NCR5380 + GENERIC_NCR5380, +#endif +#ifdef CONFIG_SCSI_NCR53C406A /* 53C406A should come before QLOGIC */ + NCR53c406a, +#endif +#ifdef CONFIG_SCSI_QLOGIC_FAS + QLOGICFAS, +#endif +#ifdef CONFIG_SCSI_QLOGIC_ISP + QLOGICISP, +#endif +#ifdef CONFIG_SCSI_PAS16 + MV_PAS16, +#endif +#ifdef CONFIG_SCSI_SEAGATE + SEAGATE_ST0X, +#endif +#ifdef CONFIG_SCSI_T128 + TRANTOR_T128, +#endif +#ifdef CONFIG_SCSI_DTC3280 + DTC3x80, +#endif +#ifdef CONFIG_SCSI_DC390T + DC390_T, +#endif +#ifdef CONFIG_SCSI_NCR53C7xx + NCR53c7xx, +#endif +#ifdef CONFIG_SCSI_NCR53C8XX + NCR53C8XX, +#endif +#ifdef CONFIG_SCSI_EATA_DMA + EATA_DMA, +#endif +#ifdef CONFIG_SCSI_EATA_PIO + EATA_PIO, +#endif +#ifdef CONFIG_SCSI_7000FASST + WD7000, +#endif +#ifdef CONFIG_SCSI_EATA + EATA, +#endif +#ifdef CONFIG_SCSI_AM53C974 + AM53C974, +#endif +#ifdef CONFIG_SCSI_MEGARAID + MEGARAID, +#endif +#ifdef CONFIG_SCSI_PPA + PPA, +#endif +#ifdef CONFIG_SCSI_SUNESP + SCSI_SPARC_ESP, +#endif +#ifdef CONFIG_SCSI_GDTH + GDTH, +#endif +#ifdef CONFIG_BLK_DEV_IDESCSI + IDESCSI, +#endif +#ifdef CONFIG_SCSI_DEBUG + SCSI_DEBUG, +#endif +}; + +#define MAX_SCSI_HOSTS (sizeof(builtin_scsi_hosts) / sizeof(Scsi_Host_Template)) + + +/* + * Our semaphores and timeout counters, where size depends on + * MAX_SCSI_HOSTS here. + */ + +struct Scsi_Host * scsi_hostlist = NULL; +struct Scsi_Device_Template * scsi_devicelist = NULL; + +int max_scsi_hosts = 0; +int next_scsi_host = 0; + +void +scsi_unregister(struct Scsi_Host * sh){ + struct Scsi_Host * shpnt; + + if(scsi_hostlist == sh) + scsi_hostlist = sh->next; + else { + shpnt = scsi_hostlist; + while(shpnt->next != sh) shpnt = shpnt->next; + shpnt->next = shpnt->next->next; + } + + /* If we are removing the last host registered, it is safe to reuse + * its host number (this avoids "holes" at boot time) (DB) + * It is also safe to reuse those of numbers directly below which have + * been released earlier (to avoid some holes in numbering). + */ + if(sh->host_no == max_scsi_hosts - 1) { + while(--max_scsi_hosts >= next_scsi_host) { + shpnt = scsi_hostlist; + while(shpnt && shpnt->host_no != max_scsi_hosts - 1) + shpnt = shpnt->next; + if(shpnt) + break; + } + } + next_scsi_host--; + scsi_init_free((char *) sh, sizeof(struct Scsi_Host) + sh->extra_bytes); +} + +/* We call this when we come across a new host adapter. We only do this + * once we are 100% sure that we want to use this host adapter - it is a + * pain to reverse this, so we try to avoid it + */ + +struct Scsi_Host * scsi_register(Scsi_Host_Template * tpnt, int j){ + struct Scsi_Host * retval, *shpnt; + retval = (struct Scsi_Host *)scsi_init_malloc(sizeof(struct Scsi_Host) + j, + (tpnt->unchecked_isa_dma && j ? GFP_DMA : 0) | GFP_ATOMIC); + retval->host_busy = 0; + retval->block = NULL; + retval->wish_block = 0; + if(j > 0xffff) panic("Too many extra bytes requested\n"); + retval->extra_bytes = j; + retval->loaded_as_module = scsi_loadable_module_flag; + retval->host_no = max_scsi_hosts++; /* never reuse host_no (DB) */ + next_scsi_host++; + retval->host_queue = NULL; + retval->host_wait = NULL; + retval->last_reset = 0; + retval->irq = 0; + retval->dma_channel = 0xff; + + /* These three are default values which can be overridden */ + retval->max_channel = 0; + retval->max_id = 8; + retval->max_lun = 8; + + retval->unique_id = 0; + retval->io_port = 0; + retval->hostt = tpnt; + retval->next = NULL; +#ifdef DEBUG + printk("Register %x %x: %d\n", (int)retval, (int)retval->hostt, j); +#endif + + /* The next six are the default values which can be overridden + * if need be */ + retval->this_id = tpnt->this_id; + retval->can_queue = tpnt->can_queue; + retval->sg_tablesize = tpnt->sg_tablesize; + retval->cmd_per_lun = tpnt->cmd_per_lun; + retval->unchecked_isa_dma = tpnt->unchecked_isa_dma; + retval->use_clustering = tpnt->use_clustering; + + retval->select_queue_depths = NULL; + + if(!scsi_hostlist) + scsi_hostlist = retval; + else + { + shpnt = scsi_hostlist; + while(shpnt->next) shpnt = shpnt->next; + shpnt->next = retval; + } + + return retval; +} + +int +scsi_register_device(struct Scsi_Device_Template * sdpnt) +{ + if(sdpnt->next) panic("Device already registered"); + sdpnt->next = scsi_devicelist; + scsi_devicelist = sdpnt; + return 0; +} + +unsigned int scsi_init() +{ + static int called = 0; + int i, pcount; + Scsi_Host_Template * tpnt; + struct Scsi_Host * shpnt; + const char * name; + + if(called) return 0; + + called = 1; + for (tpnt = &builtin_scsi_hosts[0], i = 0; i < MAX_SCSI_HOSTS; ++i, tpnt++) + { + /* + * Initialize our semaphores. -1 is interpreted to mean + * "inactive" - where as 0 will indicate a time out condition. + */ + + pcount = next_scsi_host; + if ((tpnt->detect) && + (tpnt->present = + tpnt->detect(tpnt))) + { + /* The only time this should come up is when people use + * some kind of patched driver of some kind or another. */ + if(pcount == next_scsi_host) { + if(tpnt->present > 1) + panic("Failure to register low-level scsi driver"); + /* The low-level driver failed to register a driver. We + * can do this now. */ + scsi_register(tpnt,0); + } + tpnt->next = scsi_hosts; + scsi_hosts = tpnt; + + /* Add the driver to /proc/scsi */ +#if CONFIG_PROC_FS + build_proc_dir_entries(tpnt); +#endif + } + } + + for(shpnt=scsi_hostlist; shpnt; shpnt = shpnt->next) + { + if(shpnt->hostt->info) + name = shpnt->hostt->info(shpnt); + else + name = shpnt->hostt->name; + printk ("scsi%d : %s\n", /* And print a little message */ + shpnt->host_no, name); + } + + printk ("scsi : %d host%s.\n", next_scsi_host, + (next_scsi_host == 1) ? "" : "s"); + + scsi_make_blocked_list(); + + /* Now attach the high level drivers */ +#ifdef CONFIG_BLK_DEV_SD + scsi_register_device(&sd_template); +#endif +#ifdef CONFIG_BLK_DEV_SR + scsi_register_device(&sr_template); +#endif +#ifdef CONFIG_CHR_DEV_ST + scsi_register_device(&st_template); +#endif +#ifdef CONFIG_CHR_DEV_SG + scsi_register_device(&sg_template); +#endif + +#if 0 + max_scsi_hosts = next_scsi_host; +#endif + return 0; +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-indent-level: 4 + * c-brace-imaginary-offset: 0 + * c-brace-offset: -4 + * c-argdecl-indent: 4 + * c-label-offset: -4 + * c-continued-statement-offset: 4 + * c-continued-brace-offset: 0 + * indent-tabs-mode: nil + * tab-width: 8 + * End: + */ -- cgit v1.2.3