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freebsd-dev/sys/powerpc/include/smp.h

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MFp4: SMP support
2008-04-27 19:51:34 +00:00
/*-
* Copyright (c) 2008 Marcel Moolenaar
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
This commit (along with one pending in sys/dev/ofw and one in sys/conf) give us our first minimal glimpse of PowerPC support. With this code we can get to the "mountroot>" prompt on my Apple iMac. We can't get any further due to lack of clock and interrupt handling, among other things. This does however mean that pmap and VM are initialising. We're fairly dependant on OpenFirmware at this point, but I hope to add support for other classes of firmware at a later stage. Reviewed by: obrien, dfr
2001-06-16 07:14:07 +00:00
*/
MFp4: SMP support
2008-04-27 19:51:34 +00:00
#ifndef _MACHINE_SMP_H_
#define _MACHINE_SMP_H_
#ifdef _KERNEL
#define IPI_AST 0
#define IPI_PREEMPT 1
#define IPI_RENDEZVOUS 2
#define IPI_STOP 3
* Completely Remove the option STOP_NMI from the kernel. This option has proven to have a good effect when entering KDB by using a NMI, but it completely violates all the good rules about interrupts disabled while holding a spinlock in other occasions. This can be the cause of deadlocks on events where a normal IPI_STOP is expected. * Adds an new IPI called IPI_STOP_HARD on all the supported architectures. This IPI is responsible for sending a stop message among CPUs using a privileged channel when disponible. In other cases it just does match a normal IPI_STOP. Right now the IPI_STOP_HARD functionality uses a NMI on ia32 and amd64 architectures, while on the other has a normal IPI_STOP effect. It is responsibility of maintainers to eventually implement an hard stop when necessary and possible. * Use the new IPI facility in order to implement a new userend SMP kernel function called stop_cpus_hard(). That is specular to stop_cpu() but it does use the privileged channel for the stopping facility. * Let KDB use the newly introduced function stop_cpus_hard() and leave stop_cpus() for all the other cases * Disable interrupts on CPU0 when starting the process of APs suspension. * Style cleanup and comments adding This patch should fix the reboot/shutdown deadlocks many users are constantly reporting on mailing lists. Please don't forget to update your config file with the STOP_NMI option removal Reviewed by: jhb Tested by: pho, bz, rink Approved by: re (kib)
2009-08-13 17:09:45 +00:00
#define IPI_STOP_HARD 3
Update PowerPC event timer code to use new event timers infrastructure. Reviewed by: nwitehorn Tested by: andreast H/W donated by: Gheorghe Ardelean
2010-09-11 04:45:51 +00:00
#define IPI_HARDCLOCK 4
MFp4: SMP support
2008-04-27 19:51:34 +00:00
#ifndef LOCORE
Add the powerpc support. Note that there is a dirty hack for calling openpic_write(), but nwhitehorn approved it. Discussed with: nwhitehorn
2011-05-09 16:16:15 +00:00
#include <sys/_cpuset.h>
MFp4: SMP support
2008-04-27 19:51:34 +00:00
void ipi_all_but_self(int ipi);
Add a new ipi_cpu() function to the MI IPI API that can be used to send an IPI to a specific CPU by its cpuid. Replace calls to ipi_selected() that constructed a mask for a single CPU with calls to ipi_cpu() instead. This will matter more in the future when we transition from cpumask_t to cpuset_t for CPU masks in which case building a CPU mask is more expensive. Submitted by: peter, sbruno Reviewed by: rookie Obtained from: Yahoo! (x86) MFC after: 1 month
2010-08-06 15:36:59 +00:00
void ipi_cpu(int cpu, u_int ipi);
Add the powerpc support. Note that there is a dirty hack for calling openpic_write(), but nwhitehorn approved it. Discussed with: nwhitehorn
2011-05-09 16:16:15 +00:00
void ipi_selected(cpuset_t cpus, int ipi);
MFp4: SMP support
2008-04-27 19:51:34 +00:00
struct cpuref {
uintptr_t cr_hwref;
u_int cr_cpuid;
};
Remove the tracing from the AP startup. The AP is known to start and the tracing can interfere with AP startup. Instead, use the available space in the reset vector for the initial stack.
2008-09-16 01:05:54 +00:00
void pmap_cpu_bootstrap(int);
MFppc64: Kernel sources for 64-bit PowerPC, along with build-system changes to keep 32-bit kernels compiling (build system changes for 64-bit kernels are coming later). Existing 32-bit PowerPC kernel configurations must be updated after this change to specify their architecture.
2010-07-13 05:32:19 +00:00
void cpudep_ap_early_bootstrap(void);
Add SMP support on U3-based G5 systems. This does not yet work perfectly: at least on my Xserve, getting the decrementer and timebase on APs to tick requires setting up a clock chip over I2C, which is not yet done. While here, correct the 64-bit tlbie function to set the CPU to 64-bit mode correctly. Hardware donated by: grehan
2009-10-23 03:17:02 +00:00
uintptr_t cpudep_ap_bootstrap(void);
void cpudep_ap_setup(void);
Remove the tracing from the AP startup. The AP is known to start and the tracing can interfere with AP startup. Instead, use the available space in the reset vector for the initial stack.
2008-09-16 01:05:54 +00:00
void machdep_ap_bootstrap(void);
MFp4: SMP support
2008-04-27 19:51:34 +00:00
#endif /* !LOCORE */
#endif /* _KERNEL */
#endif /* !_MACHINE_SMP_H */
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