File: [local] / sys / arch / alpha / alpha / ipifuncs.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:04:43 2008 UTC (16 years, 3 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: ipifuncs.c,v 1.1 2007/04/13 08:31:50 martin Exp $ */
/* $NetBSD: ipifuncs.c,v 1.9 1999/12/02 01:09:11 thorpej Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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.
*/
/*
* Interprocessor interrupt handlers.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <uvm/uvm_extern.h>
#include <machine/atomic.h>
#include <machine/alpha_cpu.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#include <machine/rpb.h>
void alpha_ipi_halt(void);
void alpha_ipi_tbia(void);
void alpha_ipi_tbiap(void);
void alpha_ipi_imb(void);
void alpha_ipi_ast(void);
/*
* NOTE: This table must be kept in order with the bit definitions
* in <machine/intr.h>.
*/
ipifunc_t ipifuncs[ALPHA_NIPIS] = {
alpha_ipi_halt,
alpha_ipi_tbia,
alpha_ipi_tbiap,
alpha_ipi_imb,
alpha_ipi_ast,
};
/*
* Send an interprocessor interrupt.
*/
void
alpha_send_ipi(cpu_id, ipimask)
u_long cpu_id, ipimask;
{
#ifdef DIAGNOSTIC
if (cpu_id >= hwrpb->rpb_pcs_cnt ||
cpu_info[cpu_id].ci_dev == NULL)
panic("alpha_sched_ipi: bogus cpu_id");
#endif
atomic_setbits_ulong(&cpu_info[cpu_id].ci_ipis, ipimask);
alpha_pal_wripir(cpu_id);
}
/*
* Broadcast an IPI to all but ourselves.
*/
void
alpha_broadcast_ipi(ipimask)
u_long ipimask;
{
u_long i;
for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) {
if (cpu_info[i].ci_dev == NULL)
continue;
alpha_send_ipi(i, ipimask);
}
}
/*
* Send an IPI to all in the list but ourselves.
*/
void
alpha_multicast_ipi(cpumask, ipimask)
u_long cpumask, ipimask;
{
u_long i;
cpumask &= cpus_running;
cpumask &= ~(1UL << cpu_number());
if (cpumask == 0)
return;
for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) {
if ((cpumask & (1UL << i)) == 0)
continue;
alpha_send_ipi(i, ipimask);
}
}
void
alpha_ipi_halt()
{
u_long cpu_id = alpha_pal_whami();
struct pcs *pcsp = LOCATE_PCS(hwrpb, cpu_id);
/* Disable interrupts. */
(void) splhigh();
printf("%s: shutting down...\n", cpu_info[cpu_id].ci_dev->dv_xname);
atomic_clearbits_ulong(&cpus_running, (1UL << cpu_id));
pcsp->pcs_flags &= ~(PCS_RC | PCS_HALT_REQ);
pcsp->pcs_flags |= PCS_HALT_STAY_HALTED;
alpha_pal_halt();
/* NOTREACHED */
}
void
alpha_ipi_tbia()
{
u_long cpu_id = alpha_pal_whami();
/* If we're doing a TBIA, we don't need to do a TBIAP or a SHOOTDOWN. */
atomic_clearbits_ulong(&cpu_info[cpu_id].ci_ipis,
ALPHA_IPI_TBIAP|ALPHA_IPI_SHOOTDOWN);
ALPHA_TBIA();
}
void
alpha_ipi_tbiap()
{
/* Can't clear SHOOTDOWN here; might have PG_ASM mappings. */
ALPHA_TBIAP();
}
void
alpha_ipi_imb()
{
alpha_pal_imb();
}
void
alpha_ipi_ast()
{
aston(curcpu());
}