/* * This file contains the driver for an XT hard disk controller * (at least the DTC 5150X) for Linux. * * Author: Pat Mackinlay, pat@it.com.au * Date: 29/09/92 * * Revised: 01/01/93, ... * * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, * kevinf@agora.rain.com) * Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and * Wim Van Dorst. * * Revised: 04/04/94 by Risto Kankkunen * Moved the detection code from xd_init() to xd_geninit() as it needed * interrupts enabled and Linus didn't want to enable them in that first * phase. xd_geninit() is the place to do these kinds of things anyway, * he says. * * Modularized: 04/10/96 by Todd Fries, tfries@umr.edu * * Revised: 13/12/97 by Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl * Fixed some problems with disk initialization and module initiation. * Added support for manual geometry setting (except Seagate controllers) * in form: * xd_geo=,,[,,,] * Recovered DMA access. Abridged messages. Added support for DTC5051CX, * WD1002-27X & XEBEC controllers. Driver uses now some jumper settings. * Extended ioctl() support. * * Bugfix: 15/02/01, Paul G. - inform queue layer of tiny xd_maxsect. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "xd.h" static void __init do_xd_setup (int *integers); #ifdef MODULE static int xd[5] = { -1,-1,-1,-1, }; #endif #define XD_DONT_USE_DMA 0 /* Initial value. may be overriden using "nodma" module option */ #define XD_INIT_DISK_DELAY (30) /* 30 ms delay during disk initialization */ /* Above may need to be increased if a problem with the 2nd drive detection (ST11M controller) or resetting a controller (WD) appears */ static XD_INFO xd_info[XD_MAXDRIVES]; #include #define xd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,get_order(size)) #define xd_dma_mem_free(addr, size) free_pages(addr, get_order(size)) static char *xd_dma_buffer; static XD_SIGNATURE xd_sigs[] __initdata = { { 0x0000,"Override geometry handler",NULL,xd_override_init_drive,"n unknown" }, /* Pat Mackinlay, pat@it.com.au */ { 0x0008,"[BXD06 (C) DTC 17-MAY-1985]",xd_dtc_init_controller,xd_dtc5150cx_init_drive," DTC 5150CX" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ { 0x000B,"CRD18A Not an IBM rom. (C) Copyright Data Technology Corp. 05/31/88",xd_dtc_init_controller,xd_dtc_init_drive," DTC 5150X" }, /* Todd Fries, tfries@umr.edu */ { 0x000B,"CXD23A Not an IBM ROM (C)Copyright Data Technology Corp 12/03/88",xd_dtc_init_controller,xd_dtc_init_drive," DTC 5150X" }, /* Pat Mackinlay, pat@it.com.au */ { 0x0008,"07/15/86(C) Copyright 1986 Western Digital Corp.",xd_wd_init_controller,xd_wd_init_drive," Western Dig. 1002-27X" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ { 0x0008,"06/24/88(C) Copyright 1988 Western Digital Corp.",xd_wd_init_controller,xd_wd_init_drive," Western Dig. WDXT-GEN2" }, /* Dan Newcombe, newcombe@aa.csc.peachnet.edu */ { 0x0015,"SEAGATE ST11 BIOS REVISION",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Salvador Abreu, spa@fct.unl.pt */ { 0x0010,"ST11R BIOS",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Risto Kankkunen, risto.kankkunen@cs.helsinki.fi */ { 0x0010,"ST11 BIOS v1.7",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11R" }, /* Alan Hourihane, alanh@fairlite.demon.co.uk */ { 0x1000,"(c)Copyright 1987 SMS",xd_omti_init_controller,xd_omti_init_drive,"n OMTI 5520" }, /* Dirk Melchers, dirk@merlin.nbg.sub.org */ { 0x0006,"COPYRIGHT XEBEC (C) 1984",xd_xebec_init_controller,xd_xebec_init_drive," XEBEC" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ { 0x0008,"(C) Copyright 1984 Western Digital Corp", xd_wd_init_controller, xd_wd_init_drive," Western Dig. 1002s-wx2" }, { 0x0008,"(C) Copyright 1986 Western Digital Corporation", xd_wd_init_controller, xd_wd_init_drive," 1986 Western Digital" }, /* jfree@sovereign.org */ }; static unsigned int xd_bases[] __initdata = { 0xC8000, 0xCA000, 0xCC000, 0xCE000, 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000, 0xE0000 }; static DEFINE_SPINLOCK(xd_lock); static struct gendisk *xd_gendisk[2]; static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo); static const struct block_device_operations xd_fops = { .owner = THIS_MODULE, .ioctl = xd_ioctl, .getgeo = xd_getgeo, }; static DECLARE_WAIT_QUEUE_HEAD(xd_wait_int); static u_char xd_drives, xd_irq = 5, xd_dma = 3, xd_maxsectors; static u_char xd_override __initdata = 0, xd_type __initdata = 0; static u_short xd_iobase = 0x320; static int xd_geo[XD_MAXDRIVES*3] __initdata = { 0, }; static volatile int xdc_busy; static struct timer_list xd_watchdog_int; static volatile u_char xd_error; static int nodma = XD_DONT_USE_DMA; static struct request_queue *xd_queue; /* xd_init: register the block device number and set up pointer tables */ static int __init xd_init(void) { u_char i,controller; unsigned int address; int err; #ifdef MODULE { u_char count = 0; for (i = 4; i > 0; i--) if (((xd[i] = xd[i-1]) >= 0) && !count) count = i; if ((xd[0] = count)) do_xd_setup(xd); } #endif init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog; err = -EBUSY; if (register_blkdev(XT_DISK_MAJOR, "xd")) goto out1; err = -ENOMEM; xd_queue = blk_init_queue(do_xd_request, &xd_lock); if (!xd_queue) goto out1a; if (xd_detect(&controller,&address)) { printk("Detected a%s controller (type %d) at address %06x\n", xd_sigs[controller].name,controller,address); if (!request_region(xd_iobase,4,"xd")) { printk("xd: Ports at 0x%x are not available\n", xd_iobase); goto out2; } if (controller) xd_sigs[controller].init_controller(address); xd_drives = xd_initdrives(xd_sigs[controller].init_drive); printk("Detected %d hard drive%s (using IRQ%d & DMA%d)\n", xd_drives,xd_drives == 1 ? "" : "s",xd_irq,xd_dma); } /* * With the drive detected, xd_maxsectors should now be known. * If xd_maxsectors is 0, nothing was detected and we fall through * to return -ENODEV */ if (!xd_dma_buffer && xd_maxsectors) { xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); if (!xd_dma_buffer) { printk(KERN_ERR "xd: Out of memory.\n"); goto out3; } } err = -ENODEV; if (!xd_drives) goto out3; for (i = 0; i < xd_drives; i++) { XD_INFO *p = &xd_info[i]; struct gendisk *disk = alloc_disk(64); if (!disk) goto Enomem; p->unit = i; disk->major = XT_DISK_MAJOR; disk->first_minor = i<<6; sprintf(disk->disk_name, "xd%c", i+'a'); disk->fops = &xd_fops; disk->private_data = p; disk->queue = xd_queue; set_capacity(disk, p->heads * p->cylinders * p->sectors); printk(" %s: CHS=%d/%d/%d\n", disk->disk_name, p->cylinders, p->heads, p->sectors); xd_gendisk[i] = disk; } err = -EBUSY; if (request_irq(xd_irq,xd_interrupt_handler, 0, "XT hard disk", NULL)) { printk("xd: unable to get IRQ%d\n",xd_irq); goto out4; } if (request_dma(xd_dma,"xd")) { printk("xd: unable to get DMA%d\n",xd_dma); goto out5; } /* xd_maxsectors depends on controller - so set after detection */ blk_queue_max_hw_sectors(xd_queue, xd_maxsectors); for (i = 0; i < xd_drives; i++) add_disk(xd_gendisk[i]); return 0; out5: free_irq(xd_irq, NULL); out4: for (i = 0; i < xd_drives; i++) put_disk(xd_gendisk[i]); out3: if (xd_maxsectors) release_region(xd_iobase,4); if (xd_dma_buffer) xd_dma_mem_free((unsigned long)xd_dma_buffer, xd_maxsectors * 0x200); out2: blk_cleanup_queue(xd_queue); out1a: unregister_blkdev(XT_DISK_MAJOR, "xd"); out1: return err; Enomem: err = -ENOMEM; while (i--) put_disk(xd_gendisk[i]); goto out3; } /* xd_detect: scan the possible BIOS ROM locations for the signature strings */ static u_char __init xd_detect (u_char *controller, unsigned int *address) { int i, j; if (xd_override) { *controller = xd_type; *address = 0; return(1); } for (i = 0; i < ARRAY_SIZE(xd_bases); i++) { void __iomem *p = ioremap(xd_bases[i], 0x2000); if (!p) continue; for (j = 1; j < ARRAY_SIZE(xd_sigs); j++) { const char *s = xd_sigs[j].string; if (check_signature(p + xd_sigs[j].offset, s, strlen(s))) { *controller = j; xd_type = j; *address = xd_bases[i]; iounmap(p); return 1; } } iounmap(p); } return 0; } /* do_xd_request: handle an incoming request */ static void do_xd_request (struct request_queue * q) { struct request *req; if (xdc_busy) return; req = blk_fetch_request(q); while (req) { unsigned block = blk_rq_pos(req); unsigned count = blk_rq_cur_sectors(req); XD_INFO *disk = req->rq_disk->private_data; int res = -EIO; int retry; if (req->cmd_type != REQ_TYPE_FS) goto done; if (block + count > get_capacity(req->rq_disk)) goto done; for (retry = 0; (retry < XD_RETRIES) && !res; retry++) res = xd_readwrite(rq_data_dir(req), disk, req->buffer, block, count); done: /* wrap up, 0 = success, -errno = fail */ if (!__blk_end_request_cur(req, res)) req = blk_fetch_request(q); } } static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo) { XD_INFO *p = bdev->bd_disk->private_data; geo->heads = p->heads; geo->sectors = p->sectors; geo->cylinders = p->cylinders; return 0; } /* xd_ioctl: handle device ioctl's */ static int xd_locked_ioctl(struct block_device *bdev, fmode_t mode, u_int cmd, u_long arg) { switch (cmd) { case HDIO_SET_DMA: if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (xdc_busy) return -EBUSY; nodma = !arg; if (nodma && xd_dma_buffer) { xd_dma_mem_free((unsigned long)xd_dma_buffer, xd_maxsectors * 0x200); xd_dma_buffer = NULL; } else if (!nodma && !xd_dma_buffer) { xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); if (!xd_dma_buffer) { nodma = XD_DONT_USE_DMA; return -ENOMEM; } } return 0; case HDIO_GET_DMA: return put_user(!nodma, (long __user *) arg); case HDIO_GET_MULTCOUNT: return put_user(xd_maxsectors, (long __user *) arg); default: return -EINVAL; } } static int xd_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long param) { int ret; lock_kernel(); ret = xd_locked_ioctl(bdev, mode, cmd, param); unlock_kernel(); return ret; } /* xd_readwrite: handle a read/write request */ static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_int count) { int drive = p->unit; u_char cmdblk[6],sense[4]; u_short track,cylinder; u_char head,sector,control,mode = PIO_MODE,temp; char **real_buffer; register int i; #ifdef DEBUG_READWRITE printk("xd_readwrite: operation = %s, drive = %d, buffer = 0x%X, block = %d, count = %d\n",operation == READ ? "read" : "write",drive,buffer,block,count); #endif /* DEBUG_READWRITE */ spin_unlock_irq(&xd_lock); control = p->control; if (!xd_dma_buffer) xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); while (count) { temp = count < xd_maxsectors ? count : xd_maxsectors; track = block / p->sectors; head = track % p->heads; cylinder = track / p->heads; sector = block % p->sectors; #ifdef DEBUG_READWRITE printk("xd_readwrite: drive = %d, head = %d, cylinder = %d, sector = %d, count = %d\n",drive,head,cylinder,sector,temp); #endif /* DEBUG_READWRITE */ if (xd_dma_buffer) { mode = xd_setup_dma(operation == READ ? DMA_MODE_READ : DMA_MODE_WRITE,(u_char *)(xd_dma_buffer),temp * 0x200); real_buffer = &xd_dma_buffer; for (i=0; i < (temp * 0x200); i++) xd_dma_buffer[i] = buffer[i]; } else real_buffer = &buffer; xd_build(cmdblk,operation == READ ? CMD_READ : CMD_WRITE,drive,head,cylinder,sector,temp & 0xFF,control); switch (xd_command(cmdblk,mode,(u_char *)(*real_buffer),(u_char *)(*real_buffer),sense,XD_TIMEOUT)) { case 1: printk("xd%c: %s timeout, recalibrating drive\n",'a'+drive,(operation == READ ? "read" : "write")); xd_recalibrate(drive); spin_lock_irq(&xd_lock); return -EIO; case 2: if (sense[0] & 0x30) { printk("xd%c: %s - ",'a'+drive,(operation == READ ? "reading" : "writing")); switch ((sense[0] & 0x30) >> 4) { case 0: printk("drive error, code = 0x%X",sense[0] & 0x0F); break; case 1: printk("controller error, code = 0x%X",sense[0] & 0x0F); break; case 2: printk("command error, code = 0x%X",sense[0] & 0x0F); break; case 3: printk("miscellaneous error, code = 0x%X",sense[0] & 0x0F); break; } } if (sense[0] & 0x80) printk(" - CHS = %d/%d/%d\n",((sense[2] & 0xC0) << 2) | sense[3],sense[1] & 0x1F,sense[2] & 0x3F); /* reported drive number = (sense[1] & 0xE0) >> 5 */ else printk(" - no valid disk address\n"); spin_lock_irq(&xd_lock); return -EIO; } if (xd_dma_buffer) for (i=0; i < (temp * 0x200); i++) buffer[i] = xd_dma_buffer[i]; count -= temp, buffer += temp * 0x200, block += temp; } spin_lock_irq(&xd_lock); return 0; } /* xd_recalibrate: recalibrate a given drive and reset controller if necessary */ static void xd_recalibrate (u_char drive) { u_char cmdblk[6]; xd_build(cmdblk,CMD_RECALIBRATE,drive,0,0,0,0,0); if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 8)) printk("xd%c: warning! error recalibrating, controller may be unstable\n", 'a'+drive); } /* xd_interrupt_handler: interrupt service routine */ static irqreturn_t xd_interrupt_handler(int irq, void *dev_id) { if (inb(XD_STATUS) & STAT_INTERRUPT) { /* check if it was our device */ #ifdef DEBUG_OTHER printk("xd_interrupt_handler: interrupt detected\n"); #endif /* DEBUG_OTHER */ outb(0,XD_CONTROL); /* acknowledge interrupt */ wake_up(&xd_wait_int); /* and wake up sleeping processes */ return IRQ_HANDLED; } else printk("xd: unexpected interrupt\n"); return IRQ_NONE; } /* xd_setup_dma: set up the DMA controller for a data transfer */ static u_char xd_setup_dma (u_char mode,u_char *buffer,u_int count) { unsigned long f; if (nodma) return (PIO_MODE); if (((unsigned long) buffer & 0xFFFF0000) != (((unsigned long) buffer + count) & 0xFFFF0000)) { #ifdef DEBUG_OTHER printk("xd_setup_dma: using PIO, transfer overlaps 64k boundary\n"); #endif /* DEBUG_OTHER */ return (PIO_MODE); } f=claim_dma_lock(); disable_dma(xd_dma); clear_dma_ff(xd_dma); set_dma_mode(xd_dma,mode); set_dma_addr(xd_dma, (unsigned long) buffer); set_dma_count(xd_dma,count); release_dma_lock(f); return (DMA_MODE); /* use DMA and INT */ } /* xd_build: put stuff into an array in a format suitable for the controller */ static u_char *xd_build (u_char *cmdblk,u_char command,u_char drive,u_char head,u_short cylinder,u_char sector,u_char count,u_char control) { cmdblk[0] = command; cmdblk[1] = ((drive & 0x07) << 5) | (head & 0x1F); cmdblk[2] = ((cylinder & 0x300) >> 2) | (sector & 0x3F); cmdblk[3] = cylinder & 0xFF; cmdblk[4] = count; cmdblk[5] = control; return (cmdblk); } static void xd_watchdog (unsigned long unused) { xd_error = 1; wake_up(&xd_wait_int); } /* xd_waitport: waits until port & mask == flags or a timeout occurs. return 1 for a timeout */ static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout) { u_long expiry = jiffies + timeout; int success; xdc_busy = 1; while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry)) schedule_timeout_uninterruptible(1); xdc_busy = 0; return (success); } static inline u_int xd_wait_for_IRQ (void) { unsigned long flags; xd_watchdog_int.expires = jiffies + 8 * HZ; add_timer(&xd_watchdog_int); flags=claim_dma_lock(); enable_dma(xd_dma); release_dma_lock(flags); sleep_on(&xd_wait_int); del_timer(&xd_watchdog_int); xdc_busy = 0; flags=claim_dma_lock(); disable_dma(xd_dma); release_dma_lock(flags); if (xd_error) { printk("xd: missed IRQ - command aborted\n"); xd_error = 0; return (1); } return (0); } /* xd_command: handle all data transfers necessary for a single command */ static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout) { u_char cmdblk[6],csb,complete = 0; #ifdef DEBUG_COMMAND printk("xd_command: command = 0x%X, mode = 0x%X, indata = 0x%X, outdata = 0x%X, sense = 0x%X\n",command,mode,indata,outdata,sense); #endif /* DEBUG_COMMAND */ outb(0,XD_SELECT); outb(mode,XD_CONTROL); if (xd_waitport(XD_STATUS,STAT_SELECT,STAT_SELECT,timeout)) return (1); while (!complete) { if (xd_waitport(XD_STATUS,STAT_READY,STAT_READY,timeout)) return (1); switch (inb(XD_STATUS) & (STAT_COMMAND | STAT_INPUT)) { case 0: if (mode == DMA_MODE) { if (xd_wait_for_IRQ()) return (1); } else outb(outdata ? *outdata++ : 0,XD_DATA); break; case STAT_INPUT: if (mode == DMA_MODE) { if (xd_wait_for_IRQ()) return (1); } else if (indata) *indata++ = inb(XD_DATA); else inb(XD_DATA); break; case STAT_COMMAND: outb(command ? *command++ : 0,XD_DATA); break; case STAT_COMMAND | STAT_INPUT: complete = 1; break; } } csb = inb(XD_DATA); if (xd_waitport(XD_STATUS,0,STAT_SELECT,timeout)) /* wait until deselected */ return (1); if (csb & CSB_ERROR) { /* read sense data if error */ xd_build(cmdblk,CMD_SENSE,(csb & CSB_LUN) >> 5,0,0,0,0,0); if (xd_command(cmdblk,0,sense,NULL,NULL,XD_TIMEOUT)) printk("xd: warning! sense command failed!\n"); } #ifdef DEBUG_COMMAND printk("xd_command: completed with csb = 0x%X\n",csb); #endif /* DEBUG_COMMAND */ return (csb & CSB_ERROR); } static u_char __init xd_initdrives (void (*init_drive)(u_char drive)) { u_char cmdblk[6],i,count = 0; for (i = 0; i < XD_MAXDRIVES; i++) { xd_build(cmdblk,CMD_TESTREADY,i,0,0,0,0,0); if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT*8)) { msleep_interruptible(XD_INIT_DISK_DELAY); init_drive(count); count++; msleep_interruptible(XD_INIT_DISK_DELAY); } } return (count); } static void __init xd_manual_geo_set (u_char drive) { xd_info[drive].heads = (u_char)(xd_geo[3 * drive + 1]); xd_info[drive].cylinders = (u_short)(xd_geo[3 * drive]); xd_info[drive].sectors = (u_char)(xd_geo[3 * drive + 2]); } static void __init xd_dtc_init_controller (unsigned int address) { switch (address) { case 0x00000: case 0xC8000: break; /*initial: 0x320 */ case 0xCA000: xd_iobase = 0x324; case 0xD0000: /*5150CX*/ case 0xD8000: break; /*5150CX & 5150XL*/ default: printk("xd_dtc_init_controller: unsupported BIOS address %06x\n",address); break; } xd_maxsectors = 0x01; /* my card seems to have trouble doing multi-block transfers? */ outb(0,XD_RESET); /* reset the controller */ } static void __init xd_dtc5150cx_init_drive (u_char drive) { /* values from controller's BIOS - BIOS chip may be removed */ static u_short geometry_table[][4] = { {0x200,8,0x200,0x100}, {0x267,2,0x267,0x267}, {0x264,4,0x264,0x80}, {0x132,4,0x132,0x0}, {0x132,2,0x80, 0x132}, {0x177,8,0x177,0x0}, {0x132,8,0x84, 0x0}, {}, /* not used */ {0x132,6,0x80, 0x100}, {0x200,6,0x100,0x100}, {0x264,2,0x264,0x80}, {0x280,4,0x280,0x100}, {0x2B9,3,0x2B9,0x2B9}, {0x2B9,5,0x2B9,0x2B9}, {0x280,6,0x280,0x100}, {0x132,4,0x132,0x0}}; u_char n; n = inb(XD_JUMPER); n = (drive ? n : (n >> 2)) & 0x33; n = (n | (n >> 2)) & 0x0F; if (xd_geo[3*drive]) xd_manual_geo_set(drive); else if (n != 7) { xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ xd_info[drive].sectors = 17; /* sectors */ } else { printk("xd%c: undetermined drive geometry\n",'a'+drive); return; } xd_info[drive].control = 5; /* control byte */ xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); xd_recalibrate(drive); } static void __init xd_dtc_init_drive (u_char drive) { u_char cmdblk[6],buf[64]; xd_build(cmdblk,CMD_DTCGETGEOM,drive,0,0,0,0,0); if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { xd_info[drive].heads = buf[0x0A]; /* heads */ xd_info[drive].cylinders = ((u_short *) (buf))[0x04]; /* cylinders */ xd_info[drive].sectors = 17; /* sectors */ if (xd_geo[3*drive]) xd_manual_geo_set(drive); xd_info[drive].control = 0; /* control byte */ xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,((u_short *) (buf + 1))[0x05],((u_short *) (buf + 1))[0x06],buf[0x0F]); xd_build(cmdblk,CMD_DTCSETSTEP,drive,0,0,0,0,7); if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) printk("xd_dtc_init_drive: error setting step rate for xd%c\n", 'a'+drive); } else printk("xd_dtc_init_drive: error reading geometry for xd%c\n", 'a'+drive); } static void __init xd_wd_init_controller (unsigned int address) { switch (address) { case 0x00000: case 0xC8000: break; /*initial: 0x320 */ case 0xCA000: xd_iobase = 0x324; break; case 0xCC000: xd_iobase = 0x328; break; case 0xCE000: xd_iobase = 0x32C; break; case 0xD0000: xd_iobase = 0x328; break; /* ? */ case 0xD8000: xd_iobase = 0x32C; break; /* ? */ default: printk("xd_wd_init_controller: unsupported BIOS address %06x\n",address); break; } xd_maxsectors = 0x01; /* this one doesn't wrap properly either... */ outb(0,XD_RESET); /* reset the controller */ msleep(XD_INIT_DISK_DELAY); } static void __init xd_wd_init_drive (u_char drive) { /* values from controller's BIOS - BIOS may be disabled */ static u_short geometry_table[][4] = { {0x264,4,0x1C2,0x1C2}, /* common part */ {0x132,4,0x099,0x0}, {0x267,2,0x1C2,0x1C2}, {0x267,4,0x1C2,0x1C2}, {0x334,6,0x335,0x335}, /* 1004 series RLL */ {0x30E,4,0x30F,0x3DC}, {0x30E,2,0x30F,0x30F}, {0x267,4,0x268,0x268}, {0x3D5,5,0x3D6,0x3D6}, /* 1002 series RLL */ {0x3DB,7,0x3DC,0x3DC}, {0x264,4,0x265,0x265}, {0x267,4,0x268,0x268}}; u_char cmdblk[6],buf[0x200]; u_char n = 0,rll,jumper_state,use_jumper_geo; u_char wd_1002 = (xd_sigs[xd_type].string[7] == '6'); jumper_state = ~(inb(0x322)); if (jumper_state & 0x40) xd_irq = 9; rll = (jumper_state & 0x30) ? (0x04 << wd_1002) : 0; xd_build(cmdblk,CMD_READ,drive,0,0,0,1,0); if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { xd_info[drive].heads = buf[0x1AF]; /* heads */ xd_info[drive].cylinders = ((u_short *) (buf + 1))[0xD6]; /* cylinders */ xd_info[drive].sectors = 17; /* sectors */ if (xd_geo[3*drive]) xd_manual_geo_set(drive); xd_info[drive].control = buf[0x1B5]; /* control byte */ use_jumper_geo = !(xd_info[drive].heads) || !(xd_info[drive].cylinders); if (xd_geo[3*drive]) { xd_manual_geo_set(drive); xd_info[drive].control = rll ? 7 : 5; } else if (use_jumper_geo) { n = (((jumper_state & 0x0F) >> (drive << 1)) & 0x03) | rll; xd_info[drive].cylinders = geometry_table[n][0]; xd_info[drive].heads = (u_char)(geometry_table[n][1]); xd_info[drive].control = rll ? 7 : 5; } if (!wd_1002) { if (use_jumper_geo) xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, geometry_table[n][2],geometry_table[n][3],0x0B); else xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, ((u_short *) (buf))[0xD8],((u_short *) (buf))[0xDA],buf[0x1B4]); } /* 1002 based RLL controller requests converted addressing, but reports physical (physical 26 sec., logical 17 sec.) 1004 based ???? */ if (rll & wd_1002) { if ((xd_info[drive].cylinders *= 26, xd_info[drive].cylinders /= 17) > 1023) xd_info[drive].cylinders = 1023; /* 1024 ? */ } } else printk("xd_wd_init_drive: error reading geometry for xd%c\n",'a'+drive); } static void __init xd_seagate_init_controller (unsigned int address) { switch (address) { case 0x00000: case 0xC8000: break; /*initial: 0x320 */ case 0xD0000: xd_iobase = 0x324; break; case 0xD8000: xd_iobase = 0x328; break; case 0xE0000: xd_iobase = 0x32C; break; default: printk("xd_seagate_init_controller: unsupported BIOS address %06x\n",address); break; } xd_maxsectors = 0x40; outb(0,XD_RESET); /* reset the controller */ } static void __init xd_seagate_init_drive (u_char drive) { u_char cmdblk[6],buf[0x200]; xd_build(cmdblk,CMD_ST11GETGEOM,drive,0,0,0,1,0); if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { xd_info[drive].heads = buf[0x04]; /* heads */ xd_info[drive].cylinders = (buf[0x02] << 8) | buf[0x03]; /* cylinders */ xd_info[drive].sectors = buf[0x05]; /* sectors */ xd_info[drive].control = 0; /* control byte */ } else printk("xd_seagate_init_drive: error reading geometry from xd%c\n", 'a'+drive); } /* Omti support courtesy Dirk Melchers */ static void __init xd_omti_init_controller (unsigned int address) { switch (address) { case 0x00000: case 0xC8000: break; /*initial: 0x320 */ case 0xD0000: xd_iobase = 0x324; break; case 0xD8000: xd_iobase = 0x328; break; case 0xE0000: xd_iobase = 0x32C; break; default: printk("xd_omti_init_controller: unsupported BIOS address %06x\n",address); break; } xd_maxsectors = 0x40; outb(0,XD_RESET); /* reset the controller */ } static void __init xd_omti_init_drive (u_char drive) { /* gets infos from drive */ xd_override_init_drive(drive); /* set other parameters, Hardcoded, not that nice :-) */ xd_info[drive].control = 2; } /* Xebec support (AK) */ static void __init xd_xebec_init_controller (unsigned int address) { /* iobase may be set manually in range 0x300 - 0x33C irq may be set manually to 2(9),3,4,5,6,7 dma may be set manually to 1,2,3 (How to detect them ???) BIOS address may be set manually in range 0x0 - 0xF8000 If you need non-standard settings use the xd=... command */ switch (address) { case 0x00000: case 0xC8000: /* initially: xd_iobase==0x320 */ case 0xD0000: case 0xD2000: case 0xD4000: case 0xD6000: case 0xD8000: case 0xDA000: case 0xDC000: case 0xDE000: case 0xE0000: break; default: printk("xd_xebec_init_controller: unsupported BIOS address %06x\n",address); break; } xd_maxsectors = 0x01; outb(0,XD_RESET); /* reset the controller */ msleep(XD_INIT_DISK_DELAY); } static void __init xd_xebec_init_drive (u_char drive) { /* values from controller's BIOS - BIOS chip may be removed */ static u_short geometry_table[][5] = { {0x132,4,0x080,0x080,0x7}, {0x132,4,0x080,0x080,0x17}, {0x264,2,0x100,0x100,0x7}, {0x264,2,0x100,0x100,0x17}, {0x132,8,0x080,0x080,0x7}, {0x132,8,0x080,0x080,0x17}, {0x264,4,0x100,0x100,0x6}, {0x264,4,0x100,0x100,0x17}, {0x2BC,5,0x2BC,0x12C,0x6}, {0x3A5,4,0x3A5,0x3A5,0x7}, {0x26C,6,0x26C,0x26C,0x7}, {0x200,8,0x200,0x100,0x17}, {0x400,5,0x400,0x400,0x7}, {0x400,6,0x400,0x400,0x7}, {0x264,8,0x264,0x200,0x17}, {0x33E,7,0x33E,0x200,0x7}}; u_char n; n = inb(XD_JUMPER) & 0x0F; /* BIOS's drive number: same geometry is assumed for BOTH drives */ if (xd_geo[3*drive]) xd_manual_geo_set(drive); else { xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ xd_info[drive].sectors = 17; /* sectors */ } xd_info[drive].control = geometry_table[n][4]; /* control byte */ xd_setparam(CMD_XBSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); xd_recalibrate(drive); } /* xd_override_init_drive: this finds disk geometry in a "binary search" style, narrowing in on the "correct" number of heads etc. by trying values until it gets the highest successful value. Idea courtesy Salvador Abreu (spa@fct.unl.pt). */ static void __init xd_override_init_drive (u_char drive) { u_short min[] = { 0,0,0 },max[] = { 16,1024,64 },test[] = { 0,0,0 }; u_char cmdblk[6],i; if (xd_geo[3*drive]) xd_manual_geo_set(drive); else { for (i = 0; i < 3; i++) { while (min[i] != max[i] - 1) { test[i] = (min[i] + max[i]) / 2; xd_build(cmdblk,CMD_SEEK,drive,(u_char) test[0],(u_short) test[1],(u_char) test[2],0,0); if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) min[i] = test[i]; else max[i] = test[i]; } test[i] = min[i]; } xd_info[drive].heads = (u_char) min[0] + 1; xd_info[drive].cylinders = (u_short) min[1] + 1; xd_info[drive].sectors = (u_char) min[2] + 1; } xd_info[drive].control = 0; } /* xd_setup: initialise controller from command line parameters */ static void __init do_xd_setup (int *integers) { switch (integers[0]) { case 4: if (integers[4] < 0) nodma = 1; else if (integers[4] < 8) xd_dma = integers[4]; case 3: if ((integers[3] > 0) && (integers[3] <= 0x3FC)) xd_iobase = integers[3]; case 2: if ((integers[2] > 0) && (integers[2] < 16)) xd_irq = integers[2]; case 1: xd_override = 1; if ((integers[1] >= 0) && (integers[1] < ARRAY_SIZE(xd_sigs))) xd_type = integers[1]; case 0: break; default:printk("xd: too many parameters for xd\n"); } xd_maxsectors = 0x01; } /* xd_setparam: set the drive characteristics */ static void __init xd_setparam (u_char command,u_char drive,u_char heads,u_short cylinders,u_short rwrite,u_short wprecomp,u_char ecc) { u_char cmdblk[14]; xd_build(cmdblk,command,drive,0,0,0,0,0); cmdblk[6] = (u_char) (cylinders >> 8) & 0x03; cmdblk[7] = (u_char) (cylinders & 0xFF); cmdblk[8] = heads & 0x1F; cmdblk[9] = (u_char) (rwrite >> 8) & 0x03; cmdblk[10] = (u_char) (rwrite & 0xFF); cmdblk[11] = (u_char) (wprecomp >> 8) & 0x03; cmdblk[12] = (u_char) (wprecomp & 0xFF); cmdblk[13] = ecc; /* Some controllers require geometry info as data, not command */ if (xd_command(cmdblk,PIO_MODE,NULL,&cmdblk[6],NULL,XD_TIMEOUT * 2)) printk("xd: error setting characteristics for xd%c\n", 'a'+drive); } #ifdef MODULE module_param_array(xd, int, NULL, 0); module_param_array(xd_geo, int, NULL, 0); module_param(nodma, bool, 0); MODULE_LICENSE("GPL"); void cleanup_module(void) { int i; unregister_blkdev(XT_DISK_MAJOR, "xd"); for (i = 0; i < xd_drives; i++) { del_gendisk(xd_gendisk[i]); put_disk(xd_gendisk[i]); } blk_cleanup_queue(xd_queue); release_region(xd_iobase,4); if (xd_drives) { free_irq(xd_irq, NULL); free_dma(xd_dma); if (xd_dma_buffer) xd_dma_mem_free((unsigned long)xd_dma_buffer, xd_maxsectors * 0x200); } } #else static int __init xd_setup (char *str) { int ints[5]; get_options (str, ARRAY_SIZE (ints), ints); do_xd_setup (ints); return 1; } /* xd_manual_geo_init: initialise drive geometry from command line parameters (used only for WD drives) */ static int __init xd_manual_geo_init (char *str) { int i, integers[1 + 3*XD_MAXDRIVES]; get_options (str, ARRAY_SIZE (integers), integers); if (integers[0]%3 != 0) { printk("xd: incorrect number of parameters for xd_geo\n"); return 1; } for (i = 0; (i < integers[0]) && (i < 3*XD_MAXDRIVES); i++) xd_geo[i] = integers[i+1]; return 1; } __setup ("xd=", xd_setup); __setup ("xd_geo=", xd_manual_geo_init); #endif /* MODULE */ module_init(xd_init); MODULE_ALIAS_BLOCKDEV_MAJOR(XT_DISK_MAJOR);