File: [local] / sys / arch / mac68k / mac68k / intr.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:07:13 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: intr.c,v 1.10 2007/07/29 21:24:05 miod Exp $ */
/* $NetBSD: intr.c,v 1.2 1998/08/25 04:03:56 scottr Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Glass, Gordon W. Ross, and Jason R. Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Link and dispatch interrupts.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/vmmeter.h>
#include <sys/evcount.h>
#include <uvm/uvm_extern.h>
#include <net/netisr.h>
#include <machine/atomic.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#define NISR 8
#define ISRLOC 0x18
void intr_init(void);
void netintr(void);
#ifdef DEBUG
int intr_debug = 0;
#endif
/*
* Some of the below are not used yet, but might be used someday on the
* Q700/900/950 where the interrupt controller may be reprogrammed to
* interrupt on different levels as listed in locore.s
*/
u_short mac68k_ttyipl;
u_short mac68k_netipl;
u_short mac68k_vmipl;
u_short mac68k_clockipl;
u_short mac68k_statclockipl;
struct intrhand intrs[NISR];
void intr_computeipl(void);
void
intr_init()
{
/* Standard spl(9) interrupt priorities */
mac68k_ttyipl = (PSL_S | PSL_IPL1);
if (mac68k_machine.aux_interrupts) {
mac68k_netipl = (PSL_S | PSL_IPL3);
mac68k_vmipl = (PSL_S | PSL_IPL6);
} else {
if (current_mac_model->class == MACH_CLASSAV)
mac68k_netipl = (PSL_S | PSL_IPL4);
else if (mac68k_machine.sonic)
mac68k_netipl = (PSL_S | PSL_IPL3);
else
mac68k_netipl = (PSL_S | PSL_IPL2);
mac68k_vmipl = (PSL_S | PSL_IPL2);
}
mac68k_clockipl = mac68k_statclockipl = mac68k_vmipl;
intr_computeipl();
}
/*
* Compute the interrupt levels for the spl*()
* calls. This doesn't have to be fast.
*/
void
intr_computeipl()
{
/*
* Enforce `bio <= net <= tty <= imp <= statclock <= clock'
* as defined in spl(9)
*/
if ((PSL_S | PSL_IPL2) > mac68k_netipl)
mac68k_netipl = (PSL_S | PSL_IPL2);
if (mac68k_netipl > mac68k_ttyipl)
mac68k_ttyipl = mac68k_netipl;
if (mac68k_ttyipl > mac68k_vmipl)
mac68k_vmipl = mac68k_ttyipl;
if (mac68k_vmipl > mac68k_statclockipl)
mac68k_statclockipl = mac68k_vmipl;
if (mac68k_statclockipl > mac68k_clockipl)
mac68k_clockipl = mac68k_statclockipl;
}
/*
* Establish an autovectored interrupt handler.
* Called by driver attach functions.
*/
void
intr_establish(int (*func)(void *), void *arg, int ipl, const char *name)
{
struct intrhand *ih;
#ifdef DIAGNOSTIC
if (ipl < 0 || ipl >= NISR)
panic("intr_establish: bad ipl %d", ipl);
#endif
ih = &intrs[ipl];
#ifdef DIAGNOSTIC
if (ih->ih_fn != NULL)
panic("intr_establish: attempt to share ipl %d", ipl);
#endif
ih->ih_fn = func;
ih->ih_arg = arg;
ih->ih_ipl = ipl;
evcount_attach(&ih->ih_count, name, (void *)&ih->ih_ipl, &evcount_intr);
}
/*
* Disestablish an interrupt handler.
*/
void
intr_disestablish(int ipl)
{
struct intrhand *ih;
#ifdef DIAGNOSTIC
if (ipl < 0 || ipl >= NISR)
panic("intr_disestablish: bad ipl %d", ipl);
#endif
ih = &intrs[ipl];
#ifdef DIAGNOSTIC
if (ih->ih_fn == NULL)
panic("intr_disestablish: no vector on ipl %d", ipl);
#endif
ih->ih_fn = NULL;
evcount_detach(&ih->ih_count);
}
/*
* This is the dispatcher called by the low-level
* assembly language interrupt routine.
*/
void
intr_dispatch(int evec) /* format | vector offset */
{
struct intrhand *ih;
int ipl, vec;
vec = (evec & 0x0fff) >> 2;
ipl = vec - ISRLOC;
#ifdef DIAGNOSTIC
if (ipl < 0 || ipl >= NISR)
panic("intr_dispatch: bad vec 0x%x", vec);
#endif
uvmexp.intrs++;
ih = &intrs[ipl];
if (ih->ih_fn != NULL) {
if ((*ih->ih_fn)(ih->ih_arg) != 0)
ih->ih_count.ec_count++;
} else {
#if 0
printf("spurious interrupt, ipl %d\n", ipl);
#endif
}
}
int netisr;
void
netintr()
{
int isr;
while ((isr = netisr) != 0) {
atomic_clearbits_int(&netisr, isr);
#define DONETISR(bit, fn) \
do { \
if (isr & (1 << bit)) \
(fn)(); \
} while (0)
#include <net/netisr_dispatch.h>
#undef DONETISR
}
}