Release 4.11 arch/powerpc/platforms/ps3/smp.c
/*
* PS3 SMP routines.
*
* Copyright (C) 2006 Sony Computer Entertainment Inc.
* Copyright 2006 Sony Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/smp.h>
#include <asm/machdep.h>
#include <asm/udbg.h>
#include "platform.h"
#if defined(DEBUG)
#define DBG udbg_printf
#else
#define DBG pr_debug
#endif
/**
* ps3_ipi_virqs - a per cpu array of virqs for ipi use
*/
#define MSG_COUNT 4
static DEFINE_PER_CPU(unsigned int [MSG_COUNT], ps3_ipi_virqs);
static void ps3_smp_message_pass(int cpu, int msg)
{
int result;
unsigned int virq;
if (msg >= MSG_COUNT) {
DBG("%s:%d: bad msg: %d\n", __func__, __LINE__, msg);
return;
}
virq = per_cpu(ps3_ipi_virqs, cpu)[msg];
result = ps3_send_event_locally(virq);
if (result)
DBG("%s:%d: ps3_send_event_locally(%d, %d) failed"
" (%d)\n", __func__, __LINE__, cpu, msg, result);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 74 | 94.87% | 2 | 66.67% |
| Milton D. Miller II | 4 | 5.13% | 1 | 33.33% |
| Total | 78 | 100.00% | 3 | 100.00% |
static void __init ps3_smp_probe(void)
{
int cpu;
for (cpu = 0; cpu < 2; cpu++) {
int result;
unsigned int *virqs = per_cpu(ps3_ipi_virqs, cpu);
int i;
DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
/*
* Check assumptions on ps3_ipi_virqs[] indexing. If this
* check fails, then a different mapping of PPC_MSG_
* to index needs to be setup.
*/
BUILD_BUG_ON(PPC_MSG_CALL_FUNCTION != 0);
BUILD_BUG_ON(PPC_MSG_RESCHEDULE != 1);
BUILD_BUG_ON(PPC_MSG_TICK_BROADCAST != 2);
BUILD_BUG_ON(PPC_MSG_DEBUGGER_BREAK != 3);
for (i = 0; i < MSG_COUNT; i++) {
result = ps3_event_receive_port_setup(cpu, &virqs[i]);
if (result)
continue;
DBG("%s:%d: (%d, %d) => virq %u\n",
__func__, __LINE__, cpu, i, virqs[i]);
result = smp_request_message_ipi(virqs[i], i);
if (result)
virqs[i] = 0;
else
ps3_register_ipi_irq(cpu, virqs[i]);
}
ps3_register_ipi_debug_brk(cpu, virqs[PPC_MSG_DEBUGGER_BREAK]);
DBG(" <- %s:%d: (%d)\n", __func__, __LINE__, cpu);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 182 | 95.29% | 9 | 69.23% |
| Jens Axboe | 6 | 3.14% | 1 | 7.69% |
| Michael Ellerman | 2 | 1.05% | 2 | 15.38% |
| Srivatsa S. Bhat | 1 | 0.52% | 1 | 7.69% |
| Total | 191 | 100.00% | 13 | 100.00% |
void ps3_smp_cleanup_cpu(int cpu)
{
unsigned int *virqs = per_cpu(ps3_ipi_virqs, cpu);
int i;
DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
for (i = 0; i < MSG_COUNT; i++) {
/* Can't call free_irq from interrupt context. */
ps3_event_receive_port_destroy(virqs[i]);
virqs[i] = 0;
}
DBG(" <- %s:%d: (%d)\n", __func__, __LINE__, cpu);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 75 | 98.68% | 4 | 80.00% |
| Michael Ellerman | 1 | 1.32% | 1 | 20.00% |
| Total | 76 | 100.00% | 5 | 100.00% |
static struct smp_ops_t ps3_smp_ops = {
.probe = ps3_smp_probe,
.message_pass = ps3_smp_message_pass,
.kick_cpu = smp_generic_kick_cpu,
};
void smp_init_ps3(void)
{
DBG(" -> %s\n", __func__);
smp_ops = &ps3_smp_ops;
DBG(" <- %s\n", __func__);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Geoff Levand | 422 | 95.91% | 10 | 58.82% |
| Jens Axboe | 6 | 1.36% | 1 | 5.88% |
| Milton D. Miller II | 4 | 0.91% | 1 | 5.88% |
| Michael Ellerman | 3 | 0.68% | 2 | 11.76% |
| Geert Uytterhoeven | 2 | 0.45% | 1 | 5.88% |
| Tejun Heo | 2 | 0.45% | 1 | 5.88% |
| Srivatsa S. Bhat | 1 | 0.23% | 1 | 5.88% |
| Total | 440 | 100.00% | 17 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.