1111 lines
34 KiB
C
1111 lines
34 KiB
C
/*
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* This file contains the driver for an XT hard disk controller
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* (at least the DTC 5150X) for Linux.
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*
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* Author: Pat Mackinlay, pat@it.com.au
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* Date: 29/09/92
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*
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* Revised: 01/01/93, ...
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*
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* Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler,
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* kevinf@agora.rain.com)
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* Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and
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* Wim Van Dorst.
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*
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* Revised: 04/04/94 by Risto Kankkunen
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* Moved the detection code from xd_init() to xd_geninit() as it needed
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* interrupts enabled and Linus didn't want to enable them in that first
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* phase. xd_geninit() is the place to do these kinds of things anyway,
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* he says.
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*
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* Modularized: 04/10/96 by Todd Fries, tfries@umr.edu
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*
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* Revised: 13/12/97 by Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl
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* Fixed some problems with disk initialization and module initiation.
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* Added support for manual geometry setting (except Seagate controllers)
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* in form:
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* xd_geo=<cyl_xda>,<head_xda>,<sec_xda>[,<cyl_xdb>,<head_xdb>,<sec_xdb>]
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* Recovered DMA access. Abridged messages. Added support for DTC5051CX,
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* WD1002-27X & XEBEC controllers. Driver uses now some jumper settings.
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* Extended ioctl() support.
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*
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* Bugfix: 15/02/01, Paul G. - inform queue layer of tiny xd_maxsect.
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*
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*/
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <linux/mm.h>
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/timer.h>
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#include <linux/genhd.h>
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#include <linux/hdreg.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/wait.h>
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#include <linux/blkdev.h>
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#include <linux/blkpg.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/gfp.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#include <asm/dma.h>
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#include "xd.h"
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static void __init do_xd_setup (int *integers);
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#ifdef MODULE
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static int xd[5] = { -1,-1,-1,-1, };
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#endif
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#define XD_DONT_USE_DMA 0 /* Initial value. may be overriden using
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"nodma" module option */
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#define XD_INIT_DISK_DELAY (30) /* 30 ms delay during disk initialization */
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/* Above may need to be increased if a problem with the 2nd drive detection
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(ST11M controller) or resetting a controller (WD) appears */
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static XD_INFO xd_info[XD_MAXDRIVES];
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/* If you try this driver and find that your card is not detected by the driver at bootup, you need to add your BIOS
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signature and details to the following list of signatures. A BIOS signature is a string embedded into the first
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few bytes of your controller's on-board ROM BIOS. To find out what yours is, use something like MS-DOS's DEBUG
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command. Run DEBUG, and then you can examine your BIOS signature with:
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d xxxx:0000
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where xxxx is the segment of your controller (like C800 or D000 or something). On the ASCII dump at the right, you should
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be able to see a string mentioning the manufacturer's copyright etc. Add this string into the table below. The parameters
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in the table are, in order:
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offset ; this is the offset (in bytes) from the start of your ROM where the signature starts
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signature ; this is the actual text of the signature
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xd_?_init_controller ; this is the controller init routine used by your controller
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xd_?_init_drive ; this is the drive init routine used by your controller
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The controllers directly supported at the moment are: DTC 5150x, WD 1004A27X, ST11M/R and override. If your controller is
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made by the same manufacturer as one of these, try using the same init routines as they do. If that doesn't work, your
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best bet is to use the "override" routines. These routines use a "portable" method of getting the disk's geometry, and
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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>.
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NOTE: You can now specify your XT controller's parameters from the command line in the form xd=TYPE,IRQ,IO,DMA. The driver
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should be able to detect your drive's geometry from this info. (eg: xd=0,5,0x320,3 is the "standard"). */
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#include <asm/page.h>
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#define xd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,get_order(size))
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#define xd_dma_mem_free(addr, size) free_pages(addr, get_order(size))
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static char *xd_dma_buffer;
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static XD_SIGNATURE xd_sigs[] __initdata = {
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{ 0x0000,"Override geometry handler",NULL,xd_override_init_drive,"n unknown" }, /* Pat Mackinlay, pat@it.com.au */
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{ 0x0008,"[BXD06 (C) DTC 17-MAY-1985]",xd_dtc_init_controller,xd_dtc5150cx_init_drive," DTC 5150CX" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */
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{ 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 */
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{ 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 */
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{ 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 */
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{ 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 */
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{ 0x0015,"SEAGATE ST11 BIOS REVISION",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Salvador Abreu, spa@fct.unl.pt */
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{ 0x0010,"ST11R BIOS",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Risto Kankkunen, risto.kankkunen@cs.helsinki.fi */
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{ 0x0010,"ST11 BIOS v1.7",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11R" }, /* Alan Hourihane, alanh@fairlite.demon.co.uk */
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{ 0x1000,"(c)Copyright 1987 SMS",xd_omti_init_controller,xd_omti_init_drive,"n OMTI 5520" }, /* Dirk Melchers, dirk@merlin.nbg.sub.org */
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{ 0x0006,"COPYRIGHT XEBEC (C) 1984",xd_xebec_init_controller,xd_xebec_init_drive," XEBEC" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */
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{ 0x0008,"(C) Copyright 1984 Western Digital Corp", xd_wd_init_controller, xd_wd_init_drive," Western Dig. 1002s-wx2" },
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{ 0x0008,"(C) Copyright 1986 Western Digital Corporation", xd_wd_init_controller, xd_wd_init_drive," 1986 Western Digital" }, /* jfree@sovereign.org */
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};
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static unsigned int xd_bases[] __initdata =
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{
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0xC8000, 0xCA000, 0xCC000,
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0xCE000, 0xD0000, 0xD2000,
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0xD4000, 0xD6000, 0xD8000,
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0xDA000, 0xDC000, 0xDE000,
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0xE0000
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};
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static DEFINE_SPINLOCK(xd_lock);
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static struct gendisk *xd_gendisk[2];
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static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo);
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static const struct block_device_operations xd_fops = {
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.owner = THIS_MODULE,
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.locked_ioctl = xd_ioctl,
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.getgeo = xd_getgeo,
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};
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static DECLARE_WAIT_QUEUE_HEAD(xd_wait_int);
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static u_char xd_drives, xd_irq = 5, xd_dma = 3, xd_maxsectors;
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static u_char xd_override __initdata = 0, xd_type __initdata = 0;
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static u_short xd_iobase = 0x320;
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static int xd_geo[XD_MAXDRIVES*3] __initdata = { 0, };
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static volatile int xdc_busy;
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static struct timer_list xd_watchdog_int;
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static volatile u_char xd_error;
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static int nodma = XD_DONT_USE_DMA;
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static struct request_queue *xd_queue;
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/* xd_init: register the block device number and set up pointer tables */
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static int __init xd_init(void)
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{
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u_char i,controller;
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unsigned int address;
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int err;
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#ifdef MODULE
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{
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u_char count = 0;
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for (i = 4; i > 0; i--)
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if (((xd[i] = xd[i-1]) >= 0) && !count)
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count = i;
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if ((xd[0] = count))
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do_xd_setup(xd);
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}
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#endif
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init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog;
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err = -EBUSY;
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if (register_blkdev(XT_DISK_MAJOR, "xd"))
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goto out1;
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err = -ENOMEM;
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xd_queue = blk_init_queue(do_xd_request, &xd_lock);
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if (!xd_queue)
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goto out1a;
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if (xd_detect(&controller,&address)) {
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printk("Detected a%s controller (type %d) at address %06x\n",
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xd_sigs[controller].name,controller,address);
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if (!request_region(xd_iobase,4,"xd")) {
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printk("xd: Ports at 0x%x are not available\n",
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xd_iobase);
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goto out2;
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}
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if (controller)
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xd_sigs[controller].init_controller(address);
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xd_drives = xd_initdrives(xd_sigs[controller].init_drive);
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printk("Detected %d hard drive%s (using IRQ%d & DMA%d)\n",
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xd_drives,xd_drives == 1 ? "" : "s",xd_irq,xd_dma);
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}
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/*
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* With the drive detected, xd_maxsectors should now be known.
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* If xd_maxsectors is 0, nothing was detected and we fall through
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* to return -ENODEV
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*/
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if (!xd_dma_buffer && xd_maxsectors) {
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xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200);
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if (!xd_dma_buffer) {
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printk(KERN_ERR "xd: Out of memory.\n");
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goto out3;
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}
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}
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err = -ENODEV;
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if (!xd_drives)
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goto out3;
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for (i = 0; i < xd_drives; i++) {
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XD_INFO *p = &xd_info[i];
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struct gendisk *disk = alloc_disk(64);
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if (!disk)
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goto Enomem;
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p->unit = i;
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disk->major = XT_DISK_MAJOR;
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disk->first_minor = i<<6;
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sprintf(disk->disk_name, "xd%c", i+'a');
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disk->fops = &xd_fops;
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disk->private_data = p;
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disk->queue = xd_queue;
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set_capacity(disk, p->heads * p->cylinders * p->sectors);
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printk(" %s: CHS=%d/%d/%d\n", disk->disk_name,
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p->cylinders, p->heads, p->sectors);
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xd_gendisk[i] = disk;
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}
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err = -EBUSY;
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if (request_irq(xd_irq,xd_interrupt_handler, 0, "XT hard disk", NULL)) {
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printk("xd: unable to get IRQ%d\n",xd_irq);
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goto out4;
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}
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if (request_dma(xd_dma,"xd")) {
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printk("xd: unable to get DMA%d\n",xd_dma);
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goto out5;
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}
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/* xd_maxsectors depends on controller - so set after detection */
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blk_queue_max_hw_sectors(xd_queue, xd_maxsectors);
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for (i = 0; i < xd_drives; i++)
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add_disk(xd_gendisk[i]);
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return 0;
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out5:
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free_irq(xd_irq, NULL);
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out4:
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for (i = 0; i < xd_drives; i++)
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put_disk(xd_gendisk[i]);
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out3:
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if (xd_maxsectors)
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release_region(xd_iobase,4);
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if (xd_dma_buffer)
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xd_dma_mem_free((unsigned long)xd_dma_buffer,
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xd_maxsectors * 0x200);
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out2:
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blk_cleanup_queue(xd_queue);
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out1a:
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unregister_blkdev(XT_DISK_MAJOR, "xd");
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out1:
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return err;
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Enomem:
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err = -ENOMEM;
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while (i--)
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put_disk(xd_gendisk[i]);
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goto out3;
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}
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/* xd_detect: scan the possible BIOS ROM locations for the signature strings */
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static u_char __init xd_detect (u_char *controller, unsigned int *address)
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{
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int i, j;
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if (xd_override)
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{
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*controller = xd_type;
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*address = 0;
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return(1);
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}
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for (i = 0; i < ARRAY_SIZE(xd_bases); i++) {
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void __iomem *p = ioremap(xd_bases[i], 0x2000);
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if (!p)
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continue;
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for (j = 1; j < ARRAY_SIZE(xd_sigs); j++) {
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const char *s = xd_sigs[j].string;
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if (check_signature(p + xd_sigs[j].offset, s, strlen(s))) {
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*controller = j;
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xd_type = j;
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*address = xd_bases[i];
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iounmap(p);
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return 1;
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}
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}
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iounmap(p);
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}
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return 0;
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}
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/* do_xd_request: handle an incoming request */
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static void do_xd_request (struct request_queue * q)
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{
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struct request *req;
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if (xdc_busy)
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return;
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req = blk_fetch_request(q);
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while (req) {
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unsigned block = blk_rq_pos(req);
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unsigned count = blk_rq_cur_sectors(req);
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XD_INFO *disk = req->rq_disk->private_data;
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int res = -EIO;
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int retry;
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if (!blk_fs_request(req))
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goto done;
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if (block + count > get_capacity(req->rq_disk))
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goto done;
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for (retry = 0; (retry < XD_RETRIES) && !res; retry++)
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res = xd_readwrite(rq_data_dir(req), disk, req->buffer,
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block, count);
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done:
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/* wrap up, 0 = success, -errno = fail */
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if (!__blk_end_request_cur(req, res))
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req = blk_fetch_request(q);
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}
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}
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static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
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{
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XD_INFO *p = bdev->bd_disk->private_data;
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geo->heads = p->heads;
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geo->sectors = p->sectors;
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geo->cylinders = p->cylinders;
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return 0;
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}
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/* xd_ioctl: handle device ioctl's */
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static int xd_ioctl(struct block_device *bdev, fmode_t mode, u_int cmd, u_long arg)
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{
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switch (cmd) {
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case HDIO_SET_DMA:
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if (!capable(CAP_SYS_ADMIN)) return -EACCES;
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if (xdc_busy) return -EBUSY;
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nodma = !arg;
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if (nodma && xd_dma_buffer) {
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xd_dma_mem_free((unsigned long)xd_dma_buffer,
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xd_maxsectors * 0x200);
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xd_dma_buffer = NULL;
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} else if (!nodma && !xd_dma_buffer) {
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xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200);
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if (!xd_dma_buffer) {
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nodma = XD_DONT_USE_DMA;
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return -ENOMEM;
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}
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}
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return 0;
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case HDIO_GET_DMA:
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return put_user(!nodma, (long __user *) arg);
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case HDIO_GET_MULTCOUNT:
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return put_user(xd_maxsectors, (long __user *) arg);
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default:
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return -EINVAL;
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}
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}
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/* xd_readwrite: handle a read/write request */
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static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_int count)
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{
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int drive = p->unit;
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u_char cmdblk[6],sense[4];
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u_short track,cylinder;
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u_char head,sector,control,mode = PIO_MODE,temp;
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char **real_buffer;
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register int i;
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#ifdef DEBUG_READWRITE
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printk("xd_readwrite: operation = %s, drive = %d, buffer = 0x%X, block = %d, count = %d\n",operation == READ ? "read" : "write",drive,buffer,block,count);
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#endif /* DEBUG_READWRITE */
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spin_unlock_irq(&xd_lock);
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control = p->control;
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if (!xd_dma_buffer)
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xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200);
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while (count) {
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temp = count < xd_maxsectors ? count : xd_maxsectors;
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track = block / p->sectors;
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head = track % p->heads;
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cylinder = track / p->heads;
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sector = block % p->sectors;
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#ifdef DEBUG_READWRITE
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printk("xd_readwrite: drive = %d, head = %d, cylinder = %d, sector = %d, count = %d\n",drive,head,cylinder,sector,temp);
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#endif /* DEBUG_READWRITE */
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if (xd_dma_buffer) {
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mode = xd_setup_dma(operation == READ ? DMA_MODE_READ : DMA_MODE_WRITE,(u_char *)(xd_dma_buffer),temp * 0x200);
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real_buffer = &xd_dma_buffer;
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for (i=0; i < (temp * 0x200); i++)
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xd_dma_buffer[i] = buffer[i];
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}
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else
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real_buffer = &buffer;
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xd_build(cmdblk,operation == READ ? CMD_READ : CMD_WRITE,drive,head,cylinder,sector,temp & 0xFF,control);
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switch (xd_command(cmdblk,mode,(u_char *)(*real_buffer),(u_char *)(*real_buffer),sense,XD_TIMEOUT)) {
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case 1:
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printk("xd%c: %s timeout, recalibrating drive\n",'a'+drive,(operation == READ ? "read" : "write"));
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xd_recalibrate(drive);
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spin_lock_irq(&xd_lock);
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return -EIO;
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case 2:
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if (sense[0] & 0x30) {
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printk("xd%c: %s - ",'a'+drive,(operation == READ ? "reading" : "writing"));
|
|
switch ((sense[0] & 0x30) >> 4) {
|
|
case 0: printk("drive error, code = 0x%X",sense[0] & 0x0F);
|
|
break;
|
|
case 1: printk("controller error, code = 0x%X",sense[0] & 0x0F);
|
|
break;
|
|
case 2: printk("command error, code = 0x%X",sense[0] & 0x0F);
|
|
break;
|
|
case 3: printk("miscellaneous error, code = 0x%X",sense[0] & 0x0F);
|
|
break;
|
|
}
|
|
}
|
|
if (sense[0] & 0x80)
|
|
printk(" - CHS = %d/%d/%d\n",((sense[2] & 0xC0) << 2) | sense[3],sense[1] & 0x1F,sense[2] & 0x3F);
|
|
/* reported drive number = (sense[1] & 0xE0) >> 5 */
|
|
else
|
|
printk(" - no valid disk address\n");
|
|
spin_lock_irq(&xd_lock);
|
|
return -EIO;
|
|
}
|
|
if (xd_dma_buffer)
|
|
for (i=0; i < (temp * 0x200); i++)
|
|
buffer[i] = xd_dma_buffer[i];
|
|
|
|
count -= temp, buffer += temp * 0x200, block += temp;
|
|
}
|
|
spin_lock_irq(&xd_lock);
|
|
return 0;
|
|
}
|
|
|
|
/* xd_recalibrate: recalibrate a given drive and reset controller if necessary */
|
|
static void xd_recalibrate (u_char drive)
|
|
{
|
|
u_char cmdblk[6];
|
|
|
|
xd_build(cmdblk,CMD_RECALIBRATE,drive,0,0,0,0,0);
|
|
if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 8))
|
|
printk("xd%c: warning! error recalibrating, controller may be unstable\n", 'a'+drive);
|
|
}
|
|
|
|
/* xd_interrupt_handler: interrupt service routine */
|
|
static irqreturn_t xd_interrupt_handler(int irq, void *dev_id)
|
|
{
|
|
if (inb(XD_STATUS) & STAT_INTERRUPT) { /* check if it was our device */
|
|
#ifdef DEBUG_OTHER
|
|
printk("xd_interrupt_handler: interrupt detected\n");
|
|
#endif /* DEBUG_OTHER */
|
|
outb(0,XD_CONTROL); /* acknowledge interrupt */
|
|
wake_up(&xd_wait_int); /* and wake up sleeping processes */
|
|
return IRQ_HANDLED;
|
|
}
|
|
else
|
|
printk("xd: unexpected interrupt\n");
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/* xd_setup_dma: set up the DMA controller for a data transfer */
|
|
static u_char xd_setup_dma (u_char mode,u_char *buffer,u_int count)
|
|
{
|
|
unsigned long f;
|
|
|
|
if (nodma)
|
|
return (PIO_MODE);
|
|
if (((unsigned long) buffer & 0xFFFF0000) != (((unsigned long) buffer + count) & 0xFFFF0000)) {
|
|
#ifdef DEBUG_OTHER
|
|
printk("xd_setup_dma: using PIO, transfer overlaps 64k boundary\n");
|
|
#endif /* DEBUG_OTHER */
|
|
return (PIO_MODE);
|
|
}
|
|
|
|
f=claim_dma_lock();
|
|
disable_dma(xd_dma);
|
|
clear_dma_ff(xd_dma);
|
|
set_dma_mode(xd_dma,mode);
|
|
set_dma_addr(xd_dma, (unsigned long) buffer);
|
|
set_dma_count(xd_dma,count);
|
|
|
|
release_dma_lock(f);
|
|
|
|
return (DMA_MODE); /* use DMA and INT */
|
|
}
|
|
|
|
/* xd_build: put stuff into an array in a format suitable for the controller */
|
|
static u_char *xd_build (u_char *cmdblk,u_char command,u_char drive,u_char head,u_short cylinder,u_char sector,u_char count,u_char control)
|
|
{
|
|
cmdblk[0] = command;
|
|
cmdblk[1] = ((drive & 0x07) << 5) | (head & 0x1F);
|
|
cmdblk[2] = ((cylinder & 0x300) >> 2) | (sector & 0x3F);
|
|
cmdblk[3] = cylinder & 0xFF;
|
|
cmdblk[4] = count;
|
|
cmdblk[5] = control;
|
|
|
|
return (cmdblk);
|
|
}
|
|
|
|
static void xd_watchdog (unsigned long unused)
|
|
{
|
|
xd_error = 1;
|
|
wake_up(&xd_wait_int);
|
|
}
|
|
|
|
/* xd_waitport: waits until port & mask == flags or a timeout occurs. return 1 for a timeout */
|
|
static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout)
|
|
{
|
|
u_long expiry = jiffies + timeout;
|
|
int success;
|
|
|
|
xdc_busy = 1;
|
|
while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry))
|
|
schedule_timeout_uninterruptible(1);
|
|
xdc_busy = 0;
|
|
return (success);
|
|
}
|
|
|
|
static inline u_int xd_wait_for_IRQ (void)
|
|
{
|
|
unsigned long flags;
|
|
xd_watchdog_int.expires = jiffies + 8 * HZ;
|
|
add_timer(&xd_watchdog_int);
|
|
|
|
flags=claim_dma_lock();
|
|
enable_dma(xd_dma);
|
|
release_dma_lock(flags);
|
|
|
|
sleep_on(&xd_wait_int);
|
|
del_timer(&xd_watchdog_int);
|
|
xdc_busy = 0;
|
|
|
|
flags=claim_dma_lock();
|
|
disable_dma(xd_dma);
|
|
release_dma_lock(flags);
|
|
|
|
if (xd_error) {
|
|
printk("xd: missed IRQ - command aborted\n");
|
|
xd_error = 0;
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/* xd_command: handle all data transfers necessary for a single command */
|
|
static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout)
|
|
{
|
|
u_char cmdblk[6],csb,complete = 0;
|
|
|
|
#ifdef DEBUG_COMMAND
|
|
printk("xd_command: command = 0x%X, mode = 0x%X, indata = 0x%X, outdata = 0x%X, sense = 0x%X\n",command,mode,indata,outdata,sense);
|
|
#endif /* DEBUG_COMMAND */
|
|
|
|
outb(0,XD_SELECT);
|
|
outb(mode,XD_CONTROL);
|
|
|
|
if (xd_waitport(XD_STATUS,STAT_SELECT,STAT_SELECT,timeout))
|
|
return (1);
|
|
|
|
while (!complete) {
|
|
if (xd_waitport(XD_STATUS,STAT_READY,STAT_READY,timeout))
|
|
return (1);
|
|
|
|
switch (inb(XD_STATUS) & (STAT_COMMAND | STAT_INPUT)) {
|
|
case 0:
|
|
if (mode == DMA_MODE) {
|
|
if (xd_wait_for_IRQ())
|
|
return (1);
|
|
} else
|
|
outb(outdata ? *outdata++ : 0,XD_DATA);
|
|
break;
|
|
case STAT_INPUT:
|
|
if (mode == DMA_MODE) {
|
|
if (xd_wait_for_IRQ())
|
|
return (1);
|
|
} else
|
|
if (indata)
|
|
*indata++ = inb(XD_DATA);
|
|
else
|
|
inb(XD_DATA);
|
|
break;
|
|
case STAT_COMMAND:
|
|
outb(command ? *command++ : 0,XD_DATA);
|
|
break;
|
|
case STAT_COMMAND | STAT_INPUT:
|
|
complete = 1;
|
|
break;
|
|
}
|
|
}
|
|
csb = inb(XD_DATA);
|
|
|
|
if (xd_waitport(XD_STATUS,0,STAT_SELECT,timeout)) /* wait until deselected */
|
|
return (1);
|
|
|
|
if (csb & CSB_ERROR) { /* read sense data if error */
|
|
xd_build(cmdblk,CMD_SENSE,(csb & CSB_LUN) >> 5,0,0,0,0,0);
|
|
if (xd_command(cmdblk,0,sense,NULL,NULL,XD_TIMEOUT))
|
|
printk("xd: warning! sense command failed!\n");
|
|
}
|
|
|
|
#ifdef DEBUG_COMMAND
|
|
printk("xd_command: completed with csb = 0x%X\n",csb);
|
|
#endif /* DEBUG_COMMAND */
|
|
|
|
return (csb & CSB_ERROR);
|
|
}
|
|
|
|
static u_char __init xd_initdrives (void (*init_drive)(u_char drive))
|
|
{
|
|
u_char cmdblk[6],i,count = 0;
|
|
|
|
for (i = 0; i < XD_MAXDRIVES; i++) {
|
|
xd_build(cmdblk,CMD_TESTREADY,i,0,0,0,0,0);
|
|
if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT*8)) {
|
|
msleep_interruptible(XD_INIT_DISK_DELAY);
|
|
|
|
init_drive(count);
|
|
count++;
|
|
|
|
msleep_interruptible(XD_INIT_DISK_DELAY);
|
|
}
|
|
}
|
|
return (count);
|
|
}
|
|
|
|
static void __init xd_manual_geo_set (u_char drive)
|
|
{
|
|
xd_info[drive].heads = (u_char)(xd_geo[3 * drive + 1]);
|
|
xd_info[drive].cylinders = (u_short)(xd_geo[3 * drive]);
|
|
xd_info[drive].sectors = (u_char)(xd_geo[3 * drive + 2]);
|
|
}
|
|
|
|
static void __init xd_dtc_init_controller (unsigned int address)
|
|
{
|
|
switch (address) {
|
|
case 0x00000:
|
|
case 0xC8000: break; /*initial: 0x320 */
|
|
case 0xCA000: xd_iobase = 0x324;
|
|
case 0xD0000: /*5150CX*/
|
|
case 0xD8000: break; /*5150CX & 5150XL*/
|
|
default: printk("xd_dtc_init_controller: unsupported BIOS address %06x\n",address);
|
|
break;
|
|
}
|
|
xd_maxsectors = 0x01; /* my card seems to have trouble doing multi-block transfers? */
|
|
|
|
outb(0,XD_RESET); /* reset the controller */
|
|
}
|
|
|
|
|
|
static void __init xd_dtc5150cx_init_drive (u_char drive)
|
|
{
|
|
/* values from controller's BIOS - BIOS chip may be removed */
|
|
static u_short geometry_table[][4] = {
|
|
{0x200,8,0x200,0x100},
|
|
{0x267,2,0x267,0x267},
|
|
{0x264,4,0x264,0x80},
|
|
{0x132,4,0x132,0x0},
|
|
{0x132,2,0x80, 0x132},
|
|
{0x177,8,0x177,0x0},
|
|
{0x132,8,0x84, 0x0},
|
|
{}, /* not used */
|
|
{0x132,6,0x80, 0x100},
|
|
{0x200,6,0x100,0x100},
|
|
{0x264,2,0x264,0x80},
|
|
{0x280,4,0x280,0x100},
|
|
{0x2B9,3,0x2B9,0x2B9},
|
|
{0x2B9,5,0x2B9,0x2B9},
|
|
{0x280,6,0x280,0x100},
|
|
{0x132,4,0x132,0x0}};
|
|
u_char n;
|
|
|
|
n = inb(XD_JUMPER);
|
|
n = (drive ? n : (n >> 2)) & 0x33;
|
|
n = (n | (n >> 2)) & 0x0F;
|
|
if (xd_geo[3*drive])
|
|
xd_manual_geo_set(drive);
|
|
else
|
|
if (n != 7) {
|
|
xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */
|
|
xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */
|
|
xd_info[drive].sectors = 17; /* sectors */
|
|
#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);
|