diff options
Diffstat (limited to 'drivers/block/xd.c')
| -rw-r--r-- | drivers/block/xd.c | 1112 |
1 files changed, 1112 insertions, 0 deletions
diff --git a/drivers/block/xd.c b/drivers/block/xd.c new file mode 100644 index 0000000..1676033 --- /dev/null +++ b/drivers/block/xd.c @@ -0,0 +1,1112 @@ +/* + * 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=<cyl_xda>,<head_xda>,<sec_xda>[,<cyl_xdb>,<head_xdb>,<sec_xdb>] + * 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 <linux/module.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/mm.h> +#include <linux/fs.h> +#include <linux/kernel.h> +#include <linux/timer.h> +#include <linux/genhd.h> +#include <linux/hdreg.h> +#include <linux/ioport.h> +#include <linux/init.h> +#include <linux/wait.h> +#include <linux/blkdev.h> +#include <linux/blkpg.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/uaccess.h> +#include <asm/dma.h> + +#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*HZ/1000) /* 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]; + +/* If you try this driver and find that your card is not detected by the driver at bootup, you need to add your BIOS + signature and details to the following list of signatures. A BIOS signature is a string embedded into the first + few bytes of your controller's on-board ROM BIOS. To find out what yours is, use something like MS-DOS's DEBUG + command. Run DEBUG, and then you can examine your BIOS signature with: + + d xxxx:0000 + + where xxxx is the segment of your controller (like C800 or D000 or something). On the ASCII dump at the right, you should + be able to see a string mentioning the manufacturer's copyright etc. Add this string into the table below. The parameters + in the table are, in order: + + offset ; this is the offset (in bytes) from the start of your ROM where the signature starts + signature ; this is the actual text of the signature + xd_?_init_controller ; this is the controller init routine used by your controller + xd_?_init_drive ; this is the drive init routine used by your controller + + The controllers directly supported at the moment are: DTC 5150x, WD 1004A27X, ST11M/R and override. If your controller is + made by the same manufacturer as one of these, try using the same init routines as they do. If that doesn't work, your + best bet is to use the "override" routines. These routines use a "portable" method of getting the disk's geometry, and + may work with your card. If none of these seem to work, try sending me some email and I'll see what I can do <grin>. + + NOTE: You can now specify your XT controller's parameters from the command line in the form xd=TYPE,IRQ,IO,DMA. The driver + should be able to detect your drive's geometry from this info. (eg: xd=0,5,0x320,3 is the "standard"). */ + +#include <asm/page.h> +#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 struct block_device_operations xd_fops = { + .owner = THIS_MODULE, + .ioctl = xd_ioctl, +}; +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; + + if (!xd_dma_buffer) + xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); + if (!xd_dma_buffer) { + printk(KERN_ERR "xd: Out of memory.\n"); + return -ENOMEM; + } + + 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); + } + + 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'); + sprintf(disk->devfs_name, "xd/target%d", i); + 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_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: + release_region(xd_iobase,4); +out2: + blk_cleanup_queue(xd_queue); +out1a: + unregister_blkdev(XT_DISK_MAJOR, "xd"); +out1: + if (xd_dma_buffer) + xd_dma_mem_free((unsigned long)xd_dma_buffer, + xd_maxsectors * 0x200); + 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 < (sizeof(xd_bases) / sizeof(xd_bases[0])); i++) { + void __iomem *p = ioremap(xd_bases[i], 0x2000); + if (!p) + continue; + for (j = 1; j < (sizeof(xd_sigs) / sizeof(xd_sigs[0])); 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 (request_queue_t * q) +{ + struct request *req; + + if (xdc_busy) + return; + + while ((req = elv_next_request(q)) != NULL) { + unsigned block = req->sector; + unsigned count = req->nr_sectors; + int rw = rq_data_dir(req); + XD_INFO *disk = req->rq_disk->private_data; + int res = 0; + int retry; + + if (!(req->flags & REQ_CMD)) { + end_request(req, 0); + continue; + } + if (block + count > get_capacity(req->rq_disk)) { + end_request(req, 0); + continue; + } + if (rw != READ && rw != WRITE) { + printk("do_xd_request: unknown request\n"); + end_request(req, 0); + continue; + } + for (retry = 0; (retry < XD_RETRIES) && !res; retry++) + res = xd_readwrite(rw, disk, req->buffer, block, count); + end_request(req, res); /* wrap up, 0 = fail, 1 = success */ + } +} + +/* xd_ioctl: handle device ioctl's */ +static int xd_ioctl (struct inode *inode,struct file *file,u_int cmd,u_long arg) +{ + XD_INFO *p = inode->i_bdev->bd_disk->private_data; + + switch (cmd) { + case HDIO_GETGEO: + { + struct hd_geometry g; + struct hd_geometry __user *geom= (void __user *)arg; + g.heads = p->heads; + g.sectors = p->sectors; + g.cylinders = p->cylinders; + g.start = get_start_sect(inode->i_bdev); + return copy_to_user(geom, &g, sizeof(g)) ? -EFAULT : 0; + } + 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; + } +} + +/* 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 (0); + 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 (0); + } + 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 (1); +} + +/* 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, + struct pt_regs *regs) +{ + 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)) { + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(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)) { + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(XD_INIT_DISK_DELAY); + + init_drive(count); + count++; + + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(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 */ +#if 0 + xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ + xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ + xd_info[drive].ecc = 0x0B; /* ecc length */ +#endif /* 0 */ + } + 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); +#if 0 + xd_info[drive].rwrite = ((u_short *) (buf + 1))[0x05]; /* reduced write */ + xd_info[drive].precomp = ((u_short *) (buf + 1))[0x06]; /* write precomp */ + xd_info[drive].ecc = buf[0x0F]; /* ecc length */ +#endif /* 0 */ + 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 */ + + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(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); +#if 0 + xd_info[drive].rwrite = ((u_short *) (buf))[0xD8]; /* reduced write */ + xd_info[drive].wprecomp = ((u_short *) (buf))[0xDA]; /* write precomp */ + xd_info[drive].ecc = buf[0x1B4]; /* ecc length */ +#endif /* 0 */ + 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 0 + xd_info[drive].rwrite = geometry_table[n][2]; + xd_info[drive].wprecomp = geometry_table[n][3]; + xd_info[drive].ecc = 0x0B; +#endif /* 0 */ + } + 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 ? */ +#if 0 + xd_info[drive].rwrite *= 26; + xd_info[drive].rwrite /= 17; + xd_info[drive].wprecomp *= 26 + xd_info[drive].wprecomp /= 17; +#endif /* 0 */ + } + } + 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 */ + + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(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 */ +#if 0 + xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ + xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ + xd_info[drive].ecc = 0x0B; /* ecc length */ +#endif /* 0 */ + } + 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] < (sizeof(xd_sigs) / sizeof(xd_sigs[0])))) + 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); |
