mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
2.5 KiB
120 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* PS3 SMP routines. |
|
* |
|
* Copyright (C) 2006 Sony Computer Entertainment Inc. |
|
* Copyright 2006 Sony Corp. |
|
*/ |
|
|
|
#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); |
|
} |
|
|
|
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_NMI_IPI != 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_NMI_IPI]); |
|
|
|
DBG(" <- %s:%d: (%d)\n", __func__, __LINE__, cpu); |
|
} |
|
} |
|
|
|
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); |
|
} |
|
|
|
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__); |
|
}
|
|
|