xd.c
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上传日期:2013-02-24
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- /*
- * 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/sched.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/devfs_fs_kernel.h>
- #include <asm/system.h>
- #include <asm/io.h>
- #include <asm/uaccess.h>
- #include <asm/dma.h>
- #define MAJOR_NR XT_DISK_MAJOR
- #include <linux/blk.h>
- #include <linux/blkpg.h>
- #include "xd.h"
- #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 */
- 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 = 0;
- 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 */
- };
- static unsigned int xd_bases[] __initdata =
- {
- 0xC8000, 0xCA000, 0xCC000,
- 0xCE000, 0xD0000, 0xD2000,
- 0xD4000, 0xD6000, 0xD8000,
- 0xDA000, 0xDC000, 0xDE000,
- 0xE0000
- };
- static struct hd_struct xd_struct[XD_MAXDRIVES << 6];
- static int xd_sizes[XD_MAXDRIVES << 6], xd_access[XD_MAXDRIVES];
- static int xd_blocksizes[XD_MAXDRIVES << 6];
- static int xd_maxsect[XD_MAXDRIVES << 6];
- extern struct block_device_operations xd_fops;
- static struct gendisk xd_gendisk = {
- major: MAJOR_NR,
- major_name: "xd",
- minor_shift: 6,
- max_p: 1 << 6,
- part: xd_struct,
- sizes: xd_sizes,
- real_devices: (void *)xd_info,
- fops: &xd_fops,
- };
- static struct block_device_operations xd_fops = {
- owner: THIS_MODULE,
- open: xd_open,
- release: xd_release,
- ioctl: xd_ioctl,
- };
- static DECLARE_WAIT_QUEUE_HEAD(xd_wait_int);
- static DECLARE_WAIT_QUEUE_HEAD(xd_wait_open);
- static u_char xd_valid[XD_MAXDRIVES] = { 0,0 };
- 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 DECLARE_WAIT_QUEUE_HEAD(xdc_wait);
- static struct timer_list xd_timer, xd_watchdog_int;
- static volatile u_char xd_error;
- static int nodma = XD_DONT_USE_DMA;
- static devfs_handle_t devfs_handle = NULL;
- /* xd_init: register the block device number and set up pointer tables */
- int __init xd_init (void)
- {
- init_timer (&xd_timer); xd_timer.function = xd_wakeup;
- init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog;
- if (devfs_register_blkdev(MAJOR_NR,"xd",&xd_fops)) {
- printk("xd: Unable to get major number %dn",MAJOR_NR);
- return -1;
- }
- devfs_handle = devfs_mk_dir (NULL, xd_gendisk.major_name, NULL);
- blk_init_queue(BLK_DEFAULT_QUEUE(MAJOR_NR), DEVICE_REQUEST);
- read_ahead[MAJOR_NR] = 8; /* 8 sector (4kB) read ahead */
- add_gendisk(&xd_gendisk);
- xd_geninit();
- return 0;
- }
- /* xd_detect: scan the possible BIOS ROM locations for the signature strings */
- static u_char __init xd_detect (u_char *controller, unsigned int *address)
- {
- u_char i,j,found = 0;
- if (xd_override)
- {
- *controller = xd_type;
- *address = 0;
- return(1);
- }
- for (i = 0; i < (sizeof(xd_bases) / sizeof(xd_bases[0])) && !found; i++)
- for (j = 1; j < (sizeof(xd_sigs) / sizeof(xd_sigs[0])) && !found; j++)
- if (isa_check_signature(xd_bases[i] + xd_sigs[j].offset,xd_sigs[j].string,strlen(xd_sigs[j].string))) {
- *controller = j;
- xd_type = j;
- *address = xd_bases[i];
- found++;
- }
- return (found);
- }
- /* xd_geninit: grab the IRQ and DMA channel, initialise the drives */
- /* and set up the "raw" device entries in the table */
- static void __init xd_geninit (void)
- {
- u_char i,controller;
- unsigned int address;
- for(i=0;i<(XD_MAXDRIVES << 6);i++) xd_blocksizes[i] = 1024;
- blksize_size[MAJOR_NR] = xd_blocksizes;
- if (xd_detect(&controller,&address)) {
- printk("Detected a%s controller (type %d) at address %06xn",
- xd_sigs[controller].name,controller,address);
- if (check_region(xd_iobase,4)) {
- printk("xd: Ports at 0x%x are not availablen",
- xd_iobase);
- return;
- }
- request_region(xd_iobase,4,"xd");
- 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);
- for (i = 0; i < xd_drives; i++)
- printk(" xd%c: CHS=%d/%d/%dn",'a'+i,
- xd_info[i].cylinders,xd_info[i].heads,
- xd_info[i].sectors);
- }
- if (xd_drives) {
- if (!request_irq(xd_irq,xd_interrupt_handler, 0, "XT hard disk", NULL)) {
- if (request_dma(xd_dma,"xd")) {
- printk("xd: unable to get DMA%dn",xd_dma);
- free_irq(xd_irq, NULL);
- }
- }
- else
- printk("xd: unable to get IRQ%dn",xd_irq);
- }
- /* xd_maxsectors depends on controller - so set after detection */
- for(i=0; i<(XD_MAXDRIVES << 6); i++) xd_maxsect[i] = xd_maxsectors;
- max_sectors[MAJOR_NR] = xd_maxsect;
- for (i = 0; i < xd_drives; i++) {
- xd_valid[i] = 1;
- register_disk(&xd_gendisk, MKDEV(MAJOR_NR,i<<6), 1<<6, &xd_fops,
- xd_info[i].heads * xd_info[i].cylinders *
- xd_info[i].sectors);
- }
- xd_gendisk.nr_real = xd_drives;
- }
- /* xd_open: open a device */
- static int xd_open (struct inode *inode,struct file *file)
- {
- int dev = DEVICE_NR(inode->i_rdev);
- if (dev < xd_drives) {
- while (!xd_valid[dev])
- sleep_on(&xd_wait_open);
- xd_access[dev]++;
- return (0);
- }
- return -ENXIO;
- }
- /* do_xd_request: handle an incoming request */
- static void do_xd_request (request_queue_t * q)
- {
- u_int block,count,retry;
- int code;
- sti();
- if (xdc_busy)
- return;
- while (code = 0, !QUEUE_EMPTY) {
- INIT_REQUEST; /* do some checking on the request structure */
- if (CURRENT_DEV < xd_drives
- && CURRENT->sector + CURRENT->nr_sectors
- <= xd_struct[MINOR(CURRENT->rq_dev)].nr_sects) {
- block = CURRENT->sector + xd_struct[MINOR(CURRENT->rq_dev)].start_sect;
- count = CURRENT->nr_sectors;
- switch (CURRENT->cmd) {
- case READ:
- case WRITE:
- for (retry = 0; (retry < XD_RETRIES) && !code; retry++)
- code = xd_readwrite(CURRENT->cmd,CURRENT_DEV,CURRENT->buffer,block,count);
- break;
- default:
- printk("do_xd_request: unknown requestn");
- break;
- }
- }
- end_request(code); /* 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)
- {
- int dev;
- if ((!inode) || !(inode->i_rdev))
- return -EINVAL;
- dev = DEVICE_NR(inode->i_rdev);
- if (dev >= xd_drives) return -EINVAL;
- switch (cmd) {
- case HDIO_GETGEO:
- {
- struct hd_geometry g;
- struct hd_geometry *geometry = (struct hd_geometry *) arg;
- if (!geometry) return -EINVAL;
- g.heads = xd_info[dev].heads;
- g.sectors = xd_info[dev].sectors;
- g.cylinders = xd_info[dev].cylinders;
- g.start = xd_struct[MINOR(inode->i_rdev)].start_sect;
- return copy_to_user(geometry, &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 = 0;
- }
- return 0;
- case HDIO_GET_DMA:
- return put_user(!nodma, (long *) arg);
- case HDIO_GET_MULTCOUNT:
- return put_user(xd_maxsectors, (long *) arg);
- case BLKRRPART:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- return xd_reread_partitions(inode->i_rdev);
- case BLKGETSIZE:
- case BLKGETSIZE64:
- case BLKFLSBUF:
- case BLKROSET:
- case BLKROGET:
- case BLKRASET:
- case BLKRAGET:
- case BLKPG:
- return blk_ioctl(inode->i_rdev, cmd, arg);
- default:
- return -EINVAL;
- }
- }
- /* xd_release: release the device */
- static int xd_release (struct inode *inode, struct file *file)
- {
- int target = DEVICE_NR(inode->i_rdev);
- if (target < xd_drives)
- xd_access[target]--;
- return 0;
- }
- /* xd_reread_partitions: rereads the partition table from a drive */
- static int xd_reread_partitions(kdev_t dev)
- {
- int target;
- int start;
- int partition;
-
- target = DEVICE_NR(dev);
- start = target << xd_gendisk.minor_shift;
- cli();
- xd_valid[target] = (xd_access[target] != 1);
- sti();
- if (xd_valid[target])
- return -EBUSY;
- for (partition = xd_gendisk.max_p - 1; partition >= 0; partition--) {
- int minor = (start | partition);
- invalidate_device(MKDEV(MAJOR_NR, minor), 1);
- xd_gendisk.part[minor].start_sect = 0;
- xd_gendisk.part[minor].nr_sects = 0;
- };
- grok_partitions(&xd_gendisk, target, 1<<6,
- xd_info[target].heads * xd_info[target].cylinders * xd_info[target].sectors);
- xd_valid[target] = 1;
- wake_up(&xd_wait_open);
- return 0;
- }
- /* xd_readwrite: handle a read/write request */
- static int xd_readwrite (u_char operation,u_char drive,char *buffer,u_int block,u_int count)
- {
- 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 = %dn",operation == READ ? "read" : "write",drive,buffer,block,count);
- #endif /* DEBUG_READWRITE */
- control = xd_info[drive].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 / xd_info[drive].sectors;
- head = track % xd_info[drive].heads;
- cylinder = track / xd_info[drive].heads;
- sector = block % xd_info[drive].sectors;
- #ifdef DEBUG_READWRITE
- printk("xd_readwrite: drive = %d, head = %d, cylinder = %d, sector = %d, count = %dn",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 driven",'a'+drive,(operation == READ ? "read" : "write"));
- xd_recalibrate(drive);
- 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/%dn",((sense[2] & 0xC0) << 2) | sense[3],sense[1] & 0x1F,sense[2] & 0x3F);
- /* reported drive number = (sense[1] & 0xE0) >> 5 */
- else
- printk(" - no valid disk addressn");
- 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;
- }
- 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,0,0,0,XD_TIMEOUT * 8))
- printk("xd%c: warning! error recalibrating, controller may be unstablen", 'a'+drive);
- }
- /* xd_interrupt_handler: interrupt service routine */
- static void 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 detectedn");
- #endif /* DEBUG_OTHER */
- outb(0,XD_CONTROL); /* acknowledge interrupt */
- wake_up(&xd_wait_int); /* and wake up sleeping processes */
- }
- else
- printk("xd: unexpected interruptn");
- }
- /* 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 boundaryn");
- #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);
- }
- /* xd_wakeup is called from timer interrupt */
- static void xd_wakeup (unsigned long unused)
- {
- wake_up(&xdc_wait);
- }
- /* xd_wakeup is called from timer interrupt */
- 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)) {
- xd_timer.expires = jiffies;
- cli();
- add_timer(&xd_timer);
- sleep_on(&xdc_wait);
- del_timer(&xd_timer);
- sti();
- }
- 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 abortedn");
- 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%Xn",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,0,0,XD_TIMEOUT))
- printk("xd: warning! sense command failed!n");
- }
- #ifdef DEBUG_COMMAND
- printk("xd_command: completed with csb = 0x%Xn",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,0,0,0,XD_TIMEOUT * 8)) {
- xd_timer.expires = jiffies + XD_INIT_DISK_DELAY;
- add_timer(&xd_timer);
- sleep_on(&xdc_wait);
- init_drive(count);
- count++;
- xd_timer.expires = jiffies + XD_INIT_DISK_DELAY;
- add_timer(&xd_timer);
- sleep_on(&xdc_wait);
- }
- }
- 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 %06xn",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 geometryn",'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,0,0,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,0,0,0,XD_TIMEOUT * 2))
- printk("xd_dtc_init_drive: error setting step rate for xd%cn", 'a'+drive);
- }
- else
- printk("xd_dtc_init_drive: error reading geometry for xd%cn", '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 %06xn",address);
- break;
- }
- xd_maxsectors = 0x01; /* this one doesn't wrap properly either... */
- outb(0,XD_RESET); /* reset the controller */
- xd_timer.expires = jiffies + XD_INIT_DISK_DELAY;
- add_timer(&xd_timer);
- sleep_on(&xdc_wait);
- }
- 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,0,0,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%cn",'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 %06xn",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,0,0,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%cn", '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 %06xn",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 %06xn",address);
- break;
- }
- xd_maxsectors = 0x01;
- outb(0,XD_RESET); /* reset the controller */
- xd_timer.expires = jiffies + XD_INIT_DISK_DELAY;
- add_timer(&xd_timer);
- sleep_on(&xdc_wait);
- }
- 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,0,0,0,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 */
- 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 xdn");
- }
- 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,0,&cmdblk[6],0,XD_TIMEOUT * 2))
- printk("xd: error setting characteristics for xd%cn", 'a'+drive);
- }
- #ifdef MODULE
- static int xd[5] = { -1,-1,-1,-1, };
- MODULE_PARM(xd, "1-4i");
- MODULE_PARM(xd_geo, "3-6i");
- MODULE_PARM(nodma, "i");
- MODULE_LICENSE("GPL");
- static void xd_done (void)
- {
- blksize_size[MAJOR_NR] = NULL;
- blk_cleanup_queue(BLK_DEFAULT_QUEUE(MAJOR_NR));
- blk_size[MAJOR_NR] = NULL;
- hardsect_size[MAJOR_NR] = NULL;
- read_ahead[MAJOR_NR] = 0;
- del_gendisk(&xd_gendisk);
- release_region(xd_iobase,4);
- }
- int init_module(void)
- {
- int i,count = 0;
- int error;
- for (i = 4; i > 0; i--)
- if(((xd[i] = xd[i-1]) >= 0) && !count)
- count = i;
- if((xd[0] = count))
- do_xd_setup(xd);
- error = xd_init();
- if (error) return error;
- printk(KERN_INFO "XD: Loaded as a module.n");
- if (!xd_drives) {
- /* no drives detected - unload module */
- devfs_unregister_blkdev(MAJOR_NR, "xd");
- xd_done();
- return (-1);
- }
-
- return 0;
- }
- void cleanup_module(void)
- {
- devfs_unregister_blkdev(MAJOR_NR, "xd");
- xd_done();
- devfs_unregister (devfs_handle);
- 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_geon");
- 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 */