30ca126cee
Should we ever find ourselves on an RS/6000 this code should work with few changes.
774 lines
17 KiB
C
774 lines
17 KiB
C
/*-
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* Copyright (c) 1999 Matthew N. Dodd <winter@jurai.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* References:
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* The CMU Mach3 microkernel
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* NetBSD MCA patches by Scott Telford
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* Linux MCA code.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/queue.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/limits.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/mca/mca_busreg.h>
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#include <dev/mca/mca_busvar.h>
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#include <sys/interrupt.h>
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#define MAX_COL 79
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static void mca_reg_print (device_t, char *, char *, int *);
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struct resvaddr {
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u_long addr; /* start address */
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u_long size; /* size of reserved area */
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int flags;
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struct resource *res; /* resource manager handle */
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LIST_ENTRY(resvaddr) links; /* List links */
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};
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LIST_HEAD(resvlist, resvaddr);
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struct res_node {
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int num;
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void *desc;
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TAILQ_ENTRY(res_node) links;
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};
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TAILQ_HEAD(nodelist, res_node);
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struct mca_device {
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mca_id_t id;
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u_int8_t slot;
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u_int8_t enabled;
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u_int8_t pos[8]; /* Programable Option Select Regs. */
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struct nodelist irqs; /* list of reserved IRQs */
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struct nodelist drqs; /* list of reserved DRQs */
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struct resvlist ioaddrs; /* list of reserved I/O ranges */
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struct resvlist maddrs; /* list of reserved memory ranges */
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};
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static struct res_node *
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mca_find_irq (struct mca_device * m_dev, int rid)
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{
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int i;
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struct res_node * irq;
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for (i = 0, irq = TAILQ_FIRST(&m_dev->irqs);
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i < rid && irq;
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i++, irq = TAILQ_NEXT(irq, links))
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;
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if (irq)
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return (irq);
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else
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return (NULL);
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}
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static struct res_node *
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mca_find_drq (struct mca_device * m_dev, int rid)
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{
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int i;
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struct res_node * drq;
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for (i = 0, drq = TAILQ_FIRST(&m_dev->drqs);
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i < rid && drq;
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i++, drq = TAILQ_NEXT(drq, links))
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;
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if (drq)
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return (drq);
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else
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return (NULL);
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}
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static struct resvaddr *
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mca_find_ioaddr (struct mca_device *m_dev, int rid)
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{
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int i;
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struct resvaddr * resv;
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for (i = 0, resv = LIST_FIRST(&m_dev->ioaddrs);
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i < rid && resv;
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i++, resv = LIST_NEXT(resv, links))
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;
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return (resv);
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}
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static struct resvaddr *
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mca_find_maddr (struct mca_device * m_dev, int rid)
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{
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int i;
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struct resvaddr * resv;
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for (i = 0, resv = LIST_FIRST(&m_dev->maddrs);
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i < rid && resv;
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i++, resv = LIST_NEXT(resv, links))
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;
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return (resv);
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}
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/* Not supposed to use this function! */
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void
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mca_pos_set (dev, reg, data)
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device_t dev;
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u_int8_t reg;
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u_int8_t data;
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{
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struct mca_device * m_dev = device_get_ivars(dev);
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u_int8_t slot = mca_get_slot(dev);
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if ((slot > MCA_MAX_ADAPTERS) || (reg > MCA_POS7))
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return;
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/* Disable motherboard setup */
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outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
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/* Select adapter setup regs */
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outb(MCA_ADAP_SETUP_REG, ((slot & 0x0f) | MCA_ADAP_SET));
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/* Write the register */
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outb(MCA_POS_REG(reg), data);
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/* Disable adapter setup */
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outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
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/* Update the IVAR copy */
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m_dev->pos[reg] = data;
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return;
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}
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u_int8_t
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mca_pos_get (dev, reg)
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device_t dev;
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u_int8_t reg;
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{
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u_int8_t slot = mca_get_slot(dev);
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u_int8_t data = 0;
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if ((slot > MCA_MAX_ADAPTERS) || (reg > MCA_POS7))
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return (0);
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/* Disable motherboard setup */
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outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
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switch (slot) {
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case MCA_MB_SCSI_SLOT:
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/* Disable adapter setup */
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outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
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/* Select motherboard video setup regs */
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outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_SCSI);
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/* read the register */
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data = inb(MCA_POS_REG(reg));
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/* Disable motherboard setup */
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outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
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break;
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case MCA_MB_VIDEO_SLOT:
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/* Disable adapter setup */
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outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
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/* Select motherboard scsi setup regs */
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outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_VIDEO);
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/* read the register */
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data = inb(MCA_POS_REG(reg));
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/* Disable motherboard setup */
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outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
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break;
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default:
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/* Select adapter setup regs */
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outb(MCA_ADAP_SETUP_REG,
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((slot & 0x0f) | MCA_ADAP_SET));
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/* read the register */
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data = inb(MCA_POS_REG(reg));
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/* Disable adapter setup */
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outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
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break;
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}
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return (data);
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}
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const char *
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mca_match_id (id, mca_devs)
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u_int16_t id;
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struct mca_ident * mca_devs;
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{
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struct mca_ident * m = mca_devs;
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while(m->name != NULL) {
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if (id == m->id)
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return (m->name);
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m++;
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}
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return (NULL);
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}
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u_int8_t
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mca_pos_read (dev, reg)
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device_t dev;
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u_int8_t reg;
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{
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struct mca_device * m_dev = device_get_ivars(dev);
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if (reg > MCA_POS7)
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return (0);
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return (m_dev->pos[reg]);
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}
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int
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mca_add_irq (dev, irq)
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device_t dev;
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int irq;
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{
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struct mca_device * m_dev = device_get_ivars(dev);
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struct res_node * irq_info;
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irq_info = (struct res_node *)malloc(sizeof(*irq_info),
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M_DEVBUF, M_NOWAIT);
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if (irq_info == NULL)
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return (1);
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irq_info->num = irq;
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irq_info->desc = NULL;
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TAILQ_INSERT_TAIL(&m_dev->irqs, irq_info, links);
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return (0);
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}
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int
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mca_add_drq (dev, drq)
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device_t dev;
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int drq;
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{
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struct mca_device * m_dev = device_get_ivars(dev);
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struct res_node * drq_info;
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drq_info = (struct res_node *)malloc(sizeof(*drq_info),
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M_DEVBUF, M_NOWAIT);
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if (drq_info == NULL)
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return (1);
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drq_info->num = drq;
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drq_info->desc = NULL;
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TAILQ_INSERT_TAIL(&m_dev->drqs, drq_info, links);
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return (0);
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}
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static int
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mca_add_resvaddr (struct mca_device * m_dev, struct resvlist * head,
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u_long base, u_long size, int flags)
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{
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struct resvaddr * reservation;
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reservation = (struct resvaddr *)malloc(sizeof(struct resvaddr),
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M_DEVBUF, M_NOWAIT);
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if(!reservation)
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return (ENOMEM);
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reservation->addr = base;
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reservation->size = size;
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reservation->flags = flags;
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if (!head->lh_first) {
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LIST_INSERT_HEAD(head, reservation, links);
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} else {
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struct resvaddr * node;
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for(node = head->lh_first; node; node = node->links.le_next) {
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if (node->addr > reservation->addr) {
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/*
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* List is sorted in increasing
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* address order.
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*/
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LIST_INSERT_BEFORE(node, reservation, links);
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break;
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}
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if (node->addr == reservation->addr) {
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/*
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* If the entry we want to add
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* matches any already in here,
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* fail.
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*/
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free(reservation, M_DEVBUF);
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return (EEXIST);
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}
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if (!node->links.le_next) {
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LIST_INSERT_AFTER(node, reservation, links);
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break;
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}
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}
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}
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return (0);
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}
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int
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mca_add_mspace (dev, mbase, msize, flags)
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device_t dev;
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u_long mbase;
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u_long msize;
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int flags;
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{
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struct mca_device *m_dev = device_get_ivars(dev);
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return (mca_add_resvaddr(m_dev, &(m_dev->maddrs),
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mbase, msize, flags));
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}
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int
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mca_add_iospace (dev, iobase, iosize, flags)
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device_t dev;
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u_long iobase;
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u_long iosize;
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int flags;
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{
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struct mca_device * m_dev = device_get_ivars(dev);
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return (mca_add_resvaddr(m_dev, &(m_dev->ioaddrs),
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iobase, iosize, flags));
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}
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static int
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mca_probe (device_t dev)
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{
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struct mca_device * m_dev = NULL;
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int devices_found = 0;
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u_int8_t slot;
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u_int8_t reg;
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device_set_desc(dev, "MCA bus");
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/* Disable adapter setup */
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outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
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/* Disable motherboard setup */
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outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
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if (bootverbose) {
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printf("POS REG 00 01 02 03 04 05 06 07\n");
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printf("-----------------------------------\n");
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}
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for (slot = 0; slot < MCA_MAX_SLOTS; slot++) {
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if (!m_dev) {
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m_dev = (struct mca_device *)malloc(sizeof(*m_dev),
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M_DEVBUF, M_NOWAIT);
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if (!m_dev) {
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device_printf(dev, "cannot malloc mca_device");
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break;
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}
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}
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bzero(m_dev, sizeof(*m_dev));
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/* Select adapter setup regs */
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outb(MCA_ADAP_SETUP_REG, ((slot & 0x0f) | MCA_ADAP_SET));
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/* Read the POS registers */
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for (reg = MCA_POS0; reg <= MCA_POS7; reg++) {
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m_dev->pos[reg] = inb(MCA_POS_REG(reg));
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}
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/* Disable adapter setup */
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outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
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if (bootverbose) {
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printf("mca slot %d:", slot + 1);
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for (reg = MCA_POS0; reg <= MCA_POS7; reg++) {
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printf(" %02x", m_dev->pos[reg]);
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}
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printf("\n");
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}
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m_dev->id = (u_int16_t)m_dev->pos[MCA_POS0] |
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((u_int16_t)m_dev->pos[MCA_POS1] << 8);
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if (m_dev->id == 0xffff) {
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continue;
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}
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devices_found++;
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m_dev->enabled = (m_dev->pos[MCA_POS2] & MCA_POS2_ENABLE);
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m_dev->slot = slot;
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/* Initialize our lists of reserved addresses */
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LIST_INIT(&(m_dev->ioaddrs));
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LIST_INIT(&(m_dev->maddrs));
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TAILQ_INIT(&(m_dev->irqs));
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TAILQ_INIT(&(m_dev->drqs));
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device_add_child(dev, NULL, -1, m_dev);
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m_dev = NULL;
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}
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if (m_dev) {
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free(m_dev, M_DEVBUF);
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}
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return (devices_found ? 0 : ENXIO);
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}
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static void
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mca_reg_print (dev, string, separator, column)
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device_t dev;
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char * string;
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char * separator;
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int * column;
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{
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int length = strlen(string);
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length += (separator ? 2 : 1);
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if (((*column) + length) >= MAX_COL) {
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printf("\n");
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(*column) = 0;
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} else if ((*column) != 0) {
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if (separator) {
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printf("%c", *separator);
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(*column)++;
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}
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printf(" ");
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(*column)++;
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}
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if ((*column) == 0) {
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(*column) += device_printf(dev, "%s", string);
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} else {
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(*column) += printf("%s", string);
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}
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return;
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}
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static int
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mca_print_child (device_t dev, device_t child)
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{
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char buf[81];
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struct mca_device * m_dev = device_get_ivars(child);
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int rid;
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struct res_node * node;
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struct resvaddr * resv;
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char separator = ',';
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int column = 0;
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int retval = 0;
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if (device_get_desc(child)) {
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snprintf(buf, sizeof(buf), "<%s>", device_get_desc(child));
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mca_reg_print(child, buf, NULL, &column);
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}
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rid = 0;
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while ((resv = mca_find_ioaddr(m_dev, rid++))) {
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if (resv->size == 1) {
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snprintf(buf, sizeof(buf), "%s%lx",
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((rid == 1) ? "io 0x" : "0x"),
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resv->addr);
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} else {
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snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
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((rid == 1) ? "io 0x" : "0x"),
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resv->addr,
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(resv->addr + resv->size));
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}
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mca_reg_print(child, buf,
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((rid == 2) ? &separator : NULL), &column);
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}
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rid = 0;
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while ((resv = mca_find_maddr(m_dev, rid++))) {
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if (resv->size == 1) {
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snprintf(buf, sizeof(buf), "%s%lx",
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((rid == 1) ? "mem 0x" : "0x"),
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resv->addr);
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} else {
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snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
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((rid == 1) ? "mem 0x" : "0x"),
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resv->addr,
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(resv->addr + resv->size));
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}
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mca_reg_print(child, buf,
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((rid == 2) ? &separator : NULL), &column);
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}
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rid = 0;
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while ((node = mca_find_irq(m_dev, rid++)) != NULL) {
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snprintf(buf, sizeof(buf), "irq %d", node->num);
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mca_reg_print(child, buf,
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((rid == 1) ? &separator : NULL), &column);
|
|
}
|
|
|
|
rid = 0;
|
|
while ((node = mca_find_drq(m_dev, rid++)) != NULL) {
|
|
snprintf(buf, sizeof(buf), "drq %x", node->num);
|
|
mca_reg_print(child, buf,
|
|
((rid == 1) ? &separator : NULL), &column);
|
|
}
|
|
|
|
snprintf(buf, sizeof(buf), "on %s id %04x slot %d\n",
|
|
device_get_nameunit(dev),
|
|
mca_get_id(child), mca_get_slot(child)+1);
|
|
mca_reg_print(child, buf, NULL, &column);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static void
|
|
mca_probe_nomatch (device_t dev, device_t child)
|
|
{
|
|
mca_id_t mca_id = mca_get_id(child);
|
|
u_int8_t slot = mca_get_slot(child);
|
|
u_int8_t enabled = mca_get_enabled(child);
|
|
|
|
device_printf(dev, "unknown card (id 0x%04x, %s) at slot %d\n",
|
|
mca_id,
|
|
(enabled ? "enabled" : "disabled"),
|
|
slot + 1);
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
mca_read_ivar (device_t dev, device_t child, int which, u_long * result)
|
|
{
|
|
struct mca_device * m_dev = device_get_ivars(child);
|
|
struct res_node * node;
|
|
|
|
switch (which) {
|
|
case MCA_IVAR_SLOT:
|
|
*result = m_dev->slot;
|
|
break;
|
|
case MCA_IVAR_ID:
|
|
*result = m_dev->id;
|
|
break;
|
|
case MCA_IVAR_ENABLED:
|
|
*result = m_dev->enabled;
|
|
break;
|
|
case MCA_IVAR_IRQ:
|
|
if ((node = mca_find_irq(m_dev, 0)))
|
|
*result = node->num;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
case MCA_IVAR_DRQ:
|
|
if ((node = mca_find_drq(m_dev, 0)))
|
|
*result = node->num;
|
|
else
|
|
*result = -1;
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
break;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mca_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
static struct resource *
|
|
mca_alloc_resource (device_t dev, device_t child, int type, int *rid,
|
|
u_long start, u_long end, u_long count, u_int flags)
|
|
{
|
|
struct mca_device * m_dev = device_get_ivars(child);
|
|
struct resource * rv;
|
|
struct resource ** rvp = NULL;
|
|
struct resvaddr * resv;
|
|
struct res_node * node;
|
|
int isdefault;
|
|
|
|
isdefault = ((device_get_parent(child) == dev)
|
|
&& (start == 0UL)
|
|
&& (end == ~0UL));
|
|
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
if (isdefault) {
|
|
node = mca_find_irq(m_dev, *rid);
|
|
if (!node)
|
|
return (0);
|
|
|
|
start = end = node->num;
|
|
count = 1;
|
|
flags |= RF_SHAREABLE;
|
|
}
|
|
break;
|
|
case SYS_RES_DRQ:
|
|
if (isdefault) {
|
|
node = mca_find_drq(m_dev, *rid);
|
|
if (!node)
|
|
return (0);
|
|
|
|
start = end = node->num;
|
|
count = 1;
|
|
}
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
if (isdefault) {
|
|
resv = mca_find_maddr(m_dev, *rid);
|
|
if (!resv)
|
|
return (0);
|
|
|
|
start = resv->addr;
|
|
end = resv->addr + resv->size;
|
|
count = resv->size;
|
|
rvp = &resv->res;
|
|
}
|
|
break;
|
|
case SYS_RES_IOPORT:
|
|
if (isdefault) {
|
|
resv = mca_find_ioaddr(m_dev, *rid);
|
|
if (!resv)
|
|
return (0);
|
|
|
|
start = resv->addr;
|
|
end = resv->addr + resv->size;
|
|
count = resv->size;
|
|
rvp = &resv->res;
|
|
}
|
|
break;
|
|
default:
|
|
return (0);
|
|
break;
|
|
}
|
|
|
|
rv = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
|
|
type, rid, start, end, count, flags);
|
|
|
|
if (rvp)
|
|
*rvp = rv;
|
|
|
|
return (rv);
|
|
}
|
|
|
|
static int
|
|
mca_release_resource (device_t dev, device_t child, int type, int rid,
|
|
struct resource * r)
|
|
{
|
|
struct mca_device * m_dev = device_get_ivars(child);
|
|
struct resvaddr * resv = NULL;
|
|
int rv;
|
|
int isdefault;
|
|
|
|
isdefault = (device_get_parent(child) == dev);
|
|
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
if (mca_find_irq(m_dev, rid) == NULL)
|
|
return (EINVAL);
|
|
break;
|
|
case SYS_RES_DRQ:
|
|
if (mca_find_drq(m_dev, rid) == NULL)
|
|
return (EINVAL);
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
if (isdefault) {
|
|
resv = mca_find_maddr(m_dev, rid);
|
|
}
|
|
break;
|
|
case SYS_RES_IOPORT:
|
|
if (isdefault) {
|
|
resv = mca_find_ioaddr(m_dev, rid);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
rv = BUS_RELEASE_RESOURCE(device_get_parent(dev), child, type, rid, r);
|
|
|
|
if (rv == 0) {
|
|
if (resv)
|
|
resv->res = 0;
|
|
}
|
|
|
|
return (rv);
|
|
}
|
|
|
|
static device_method_t mca_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, mca_probe),
|
|
DEVMETHOD(device_attach, bus_generic_attach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, mca_print_child),
|
|
DEVMETHOD(bus_probe_nomatch, mca_probe_nomatch),
|
|
DEVMETHOD(bus_read_ivar, mca_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, mca_write_ivar),
|
|
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
|
|
DEVMETHOD(bus_alloc_resource, mca_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, mca_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t mca_driver = {
|
|
"mca",
|
|
mca_methods,
|
|
1, /* no softc */
|
|
};
|
|
|
|
static devclass_t mca_devclass;
|
|
|
|
DRIVER_MODULE(mca, nexus, mca_driver, mca_devclass, 0, 0);
|