| /* |
| * 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 <linux/delay.h> |
| #include <linux/io.h> |
| |
| #include <asm/system.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) /* 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 int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
| |
| static 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; |
| |
| 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'); |
| 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 < 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; |
| |
| 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 (!blk_fs_request(req)) { |
| 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 */ |
| } |
| } |
| |
| 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_ioctl (struct inode *inode,struct file *file,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; |
| } |
| } |
| |
| /* 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) |
| { |
| 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 */ |
| #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 */ |
| |
| 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); |
| #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 */ |
| |
| 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 */ |
| #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] < 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); |