277 lines
7.1 KiB
C
277 lines
7.1 KiB
C
/****************************************************************************/
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/*
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* Motorola Background Debug Mode Driver for SCO based on the linux one
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* which it needs to compile.
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*
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* Copyright (C) 1999 David McCullough (davidm@stallion.oz.au)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* 22/10/1999 -- CCJ (ccj@acm.org)
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* Altered to match the split driver code.
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*
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*/
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#define BDM_DEFAULT_DEBUG 0
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/immu.h>
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#include <sys/dir.h>
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#include <sys/user.h>
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#include <sys/sysmacros.h>
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#include <sys/errno.h>
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#include <sys/conf.h>
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#include "bdm.h"
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/****************************************************************************
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* UNIX driver support routines *
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****************************************************************************/
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/*
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* Big hack to get around differences in outb under SCO
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*/
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void
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bdm_outb (int port, int value)
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{
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outb (port, value);
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}
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#define outb(value, port) bdm_outb (port, value)
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/****************************************************************************
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* Other tings we need to compile *
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****************************************************************************/
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#define PRINTF printf
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#define udelay(x) bdm_delay (x)
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#define MINOR(x) minor (x)
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/****************************************************************************
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* Delay for a while so target can keep up. *
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****************************************************************************/
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static void
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bdm_delay (int counter)
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{
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while (counter--)
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__asm ("nop");
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}
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/****************************************************************************
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* Wait a longer while. This function sleeps *
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****************************************************************************/
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static void
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bdm_sleep (u_int time)
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{
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delay(time);
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}
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/****************************************************************************
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* OS worker functions. *
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****************************************************************************/
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static int
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os_claim_io_ports (unsigned int base, unsigned int num)
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{
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return 0;
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}
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static int
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os_release_io_ports (unsigned int base, unsigned int num)
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{
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return 0;
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}
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static int
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os_copy_in (void *dst, void *src, int size)
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{
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if (copyin (src, dst, size) < 0)
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return EFAULT;
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return 0;
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}
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static int
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os_copy_out (void *dst, void *src, int size)
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{
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if (copyout (src, dst, size) < 0)
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return EFAULT;
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return 0;
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}
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static void
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os_lock_module ()
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{
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}
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static void
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os_unlock_module ()
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{
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}
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/****************************************************************************
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* Include the BBM code *
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****************************************************************************/
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#include "bdm.c"
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/****************************************************************************
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* The real driver code starts here *
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****************************************************************************/
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int
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bdminit ()
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{
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int minor, found;
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static char hex_digit[] = "0123456789ABCDEF";
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/*
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* Set up port numbers
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*/
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found = 0;
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for (minor = 0;
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minor < (sizeof bdm_device_info / sizeof bdm_device_info[0]);
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minor++) {
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extern int bdm_ports[], bdm_debug_level; /* see Space.c */
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int port, i;
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struct BDM *self = &bdm_device_info[minor];
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/*
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* First set the default debug level. I use a variable
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* here so I can set it with a debugger or just change
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* space.c and rebuild the kernel.
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*/
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self->debugFlag = bdm_debug_level;
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/*
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* Choose a port number
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*/
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i = BDM_IFACE_MINOR (minor);
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if (i >= 0 && i < 4)
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port = bdm_ports[i];
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else
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port = -1;
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if (port == -1) {
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self->exists = 0;
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continue;
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}
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/*
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* See if the port exists
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*/
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self->exists = 1;
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outb (0x00, port);
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udelay (50);
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if (inb (port) != 0x00) {
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self->exists = -1;
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if (self->debugFlag)
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printk("BDM driver cannot detect device %d(addr=0x%x).\n",
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BDM_IFACE_MINOR(minor), port);
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}
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bcopy ("bdm\0\0\0", self->name, 6);
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self->name[4] = hex_digit[(minor & 0xf0) >> 4];
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self->name[5] = hex_digit[minor & 0xf];
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self->portBase = self->dataPort = port;
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self->statusPort = port + 1;
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self->controlPort = port + 2;
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switch (BDM_IFACE (minor)) {
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case BDM_CPU32_PD: cpu32_pd_init_self (self); break;
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case BDM_CPU32_ICD: cpu32_icd_init_self (self); break;
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case BDM_COLDFIRE_PE: cf_pe_init_self (self); break;
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default:
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self->exists = -2;
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if (self->debugFlag)
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printk("BDM driver has no interface for minor number %d\n",
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minor);
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break;
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}
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if (self->exists) {
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printcfg("bdm", port, 4, -1, -1,
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"%d minor=%d v%d.%d, " __DATE__ ", " __TIME__,
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self->exists, minor,
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BDM_DRV_VERSION >> 8, BDM_DRV_VERSION & 0xff);
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found++;
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if (self->exists < 0)
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self->exists = 0;
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}
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}
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if (!found)
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printcfg("bdm", 0, 0, -1, -1,
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"NO-PORTS v%d.%d, " __DATE__ ", " __TIME__,
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BDM_DRV_VERSION >> 8, BDM_DRV_VERSION & 0xff);
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return(0);
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}
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/******************************************************************************/
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int
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bdmopen (dev_t dev, int flag, int type)
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{
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u.u_error = bdm_open (MINOR(dev));
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return 0;
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}
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/******************************************************************************/
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int
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bdmclose (dev_t dev, int flag, int type)
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{
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u.u_error = bdm_close (MINOR(dev));
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return 0;
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}
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/******************************************************************************/
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int
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bdmioctl (dev_t dev, int cmd, int arg, int mode)
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{
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u.u_error = bdm_ioctl (MINOR(dev), cmd, arg);
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return 0;
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}
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/******************************************************************************/
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int
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bdmread (dev_t dev)
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{
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u.u_error = bdm_read (MINOR (dev), u.u_base, u.u_count);
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u.u_base += u.u_count;
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u.u_count = 0;
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return(0);
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}
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/******************************************************************************/
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int
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bdmwrite (dev_t dev)
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{
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u.u_error = bdm_write (MINOR (dev), u.u_base, u.u_count);
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u.u_base += u.u_count;
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u.u_count = 0;
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return (0);
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}
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/******************************************************************************/
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