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sh: Move platform smp ops in to their own structure. 

This cribs the MIPS plat_smp_ops approach for wrapping up the platform
ops. This will allow for mixing and matching different ops on the same
platform in the future.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-03-30 12:38:01 +09:00
parent 4a6feab0ee
commit 3366e3585f
9 changed files with 95 additions and 23 deletions
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3
arch/sh/boards/board-urquell.c
View File

@ -24,6 +24,7 @@
#include <cpu/sh7786.h>
#include <asm/heartbeat.h>
#include <asm/sizes.h>
#include <asm/smp-ops.h>
/*
* bit 1234 5678
@ -203,6 +204,8 @@ static void __init urquell_setup(char **cmdline_p)
printk(KERN_INFO "Renesas Technology Corp. Urquell support.\n");
pm_power_off = urquell_power_off;
register_smp_ops(&shx3_smp_ops);
}
/*

3
arch/sh/boards/mach-sdk7786/setup.c
View File

@ -21,6 +21,7 @@
#include <asm/heartbeat.h>
#include <asm/sizes.h>
#include <asm/reboot.h>
#include <asm/smp-ops.h>
static struct resource heartbeat_resource = {
.start = 0x07fff8b0,
@ -189,6 +190,8 @@ static void __init sdk7786_setup(char **cmdline_p)
machine_ops.restart = sdk7786_restart;
pm_power_off = sdk7786_power_off;
register_smp_ops(&shx3_smp_ops);
}
/*

7
arch/sh/boards/mach-x3proto/setup.c
View File

@ -19,6 +19,7 @@
#include <linux/usb/r8a66597.h>
#include <linux/usb/m66592.h>
#include <asm/ilsel.h>
#include <asm/smp-ops.h>
static struct resource heartbeat_resources[] = {
[0] = {
@ -152,7 +153,13 @@ static void __init x3proto_init_irq(void)
__raw_writel(__raw_readl(0xfe410000) | (1 << 21), 0xfe410000);
}
static void __init x3proto_setup(char **cmdline_p)
{
register_smp_ops(&shx3_smp_ops);
}
static struct sh_machine_vector mv_x3proto __initmv = {
.mv_name = "x3proto",
.mv_setup = x3proto_setup,
.mv_init_irq = x3proto_init_irq,
};

39
arch/sh/include/asm/smp-ops.h Normal file
View File

@ -0,0 +1,39 @@
#ifndef __ASM_SH_SMP_OPS_H
#define __ASM_SH_SMP_OPS_H
struct plat_smp_ops {
void (*smp_setup)(void);
unsigned int (*smp_processor_id)(void);
void (*prepare_cpus)(unsigned int max_cpus);
void (*start_cpu)(unsigned int cpu, unsigned long entry_point);
void (*send_ipi)(unsigned int cpu, unsigned int message);
};
extern struct plat_smp_ops shx3_smp_ops;
#ifdef CONFIG_SMP
static inline void plat_smp_setup(void)
{
extern struct plat_smp_ops *mp_ops; /* private */
BUG_ON(!mp_ops);
mp_ops->smp_setup();
}
extern void register_smp_ops(struct plat_smp_ops *ops);
#else
static inline void plat_smp_setup(void)
{
/* UP, nothing to do ... */
}
static inline void register_smp_ops(struct plat_smp_ops *ops)
{
}
#endif /* CONFIG_SMP */
#endif /* __ASM_SH_SMP_OPS_H */

18
arch/sh/include/asm/smp.h
View File

@ -3,6 +3,7 @@
#include <linux/bitops.h>
#include <linux/cpumask.h>
#include <asm/smp-ops.h>
#ifdef CONFIG_SMP
@ -11,7 +12,6 @@
#include <asm/current.h>
#define raw_smp_processor_id() (current_thread_info()->cpu)
#define hard_smp_processor_id() plat_smp_processor_id()
/* Map from cpu id to sequential logical cpu number. */
extern int __cpu_number_map[NR_CPUS];
@ -36,15 +36,19 @@ void smp_timer_broadcast(const struct cpumask *mask);
void local_timer_interrupt(void);
void local_timer_setup(unsigned int cpu);
void plat_smp_setup(void);
void plat_prepare_cpus(unsigned int max_cpus);
int plat_smp_processor_id(void);
void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
void plat_send_ipi(unsigned int cpu, unsigned int message);
void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
static inline int hard_smp_processor_id(void)
{
extern struct plat_smp_ops *mp_ops; /* private */
if (!mp_ops)
return 0; /* boot CPU */
return mp_ops->smp_processor_id();
}
#else
#define hard_smp_processor_id() (0)

20
arch/sh/kernel/cpu/sh4a/smp-shx3.c
View File

@ -1,7 +1,7 @@
/*
* SH-X3 SMP
*
* Copyright (C) 2007 - 2008 Paul Mundt
* Copyright (C) 2007 - 2010 Paul Mundt
* Copyright (C) 2007 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
@ -37,7 +37,7 @@ static irqreturn_t ipi_interrupt_handler(int irq, void *arg)
return IRQ_HANDLED;
}
void __init plat_smp_setup(void)
static void shx3_smp_setup(void)
{
unsigned int cpu = 0;
int i, num;
@ -63,7 +63,7 @@ void __init plat_smp_setup(void)
printk(KERN_INFO "Detected %i available secondary CPU(s)\n", num);
}
void __init plat_prepare_cpus(unsigned int max_cpus)
static void shx3_prepare_cpus(unsigned int max_cpus)
{
int i;
@ -76,7 +76,7 @@ void __init plat_prepare_cpus(unsigned int max_cpus)
IRQF_DISABLED | IRQF_PERCPU, "IPI", (void *)(long)i);
}
void plat_start_cpu(unsigned int cpu, unsigned long entry_point)
static void shx3_start_cpu(unsigned int cpu, unsigned long entry_point)
{
if (__in_29bit_mode())
__raw_writel(entry_point, RESET_REG(cpu));
@ -93,12 +93,12 @@ void plat_start_cpu(unsigned int cpu, unsigned long entry_point)
__raw_writel(STBCR_RESET | STBCR_LTSLP, STBCR_REG(cpu));
}
int plat_smp_processor_id(void)
static unsigned int shx3_smp_processor_id(void)
{
return __raw_readl(0xff000048); /* CPIDR */
}
void plat_send_ipi(unsigned int cpu, unsigned int message)
static void shx3_send_ipi(unsigned int cpu, unsigned int message)
{
unsigned long addr = 0xfe410070 + (cpu * 4);
@ -106,3 +106,11 @@ void plat_send_ipi(unsigned int cpu, unsigned int message)
__raw_writel(1 << (message << 2), addr); /* C0INTICI..CnINTICI */
}
struct plat_smp_ops shx3_smp_ops = {
.smp_setup = shx3_smp_setup,
.prepare_cpus = shx3_prepare_cpus,
.start_cpu = shx3_start_cpu,
.smp_processor_id = shx3_smp_processor_id,
.send_ipi = shx3_send_ipi,
};

2
arch/sh/kernel/localtimer.c
View File

@ -44,7 +44,7 @@ static void dummy_timer_set_mode(enum clock_event_mode mode,
{
}
void __cpuinit local_timer_setup(unsigned int cpu)
void local_timer_setup(unsigned int cpu)
{
struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);

2
arch/sh/kernel/setup.c
View File

@ -459,9 +459,7 @@ void __init setup_arch(char **cmdline_p)
if (likely(sh_mv.mv_setup))
sh_mv.mv_setup(cmdline_p);
#ifdef CONFIG_SMP
plat_smp_setup();
#endif
}
/* processor boot mode configuration */

24
arch/sh/kernel/smp.c
View File

@ -3,7 +3,7 @@
*
* SMP support for the SuperH processors.
*
* Copyright (C) 2002 - 2008 Paul Mundt
* Copyright (C) 2002 - 2010 Paul Mundt
* Copyright (C) 2006 - 2007 Akio Idehara
*
* This file is subject to the terms and conditions of the GNU General Public
@ -31,6 +31,16 @@
int __cpu_number_map[NR_CPUS]; /* Map physical to logical */
int __cpu_logical_map[NR_CPUS]; /* Map logical to physical */
struct plat_smp_ops *mp_ops = NULL;
void __cpuinit register_smp_ops(struct plat_smp_ops *ops)
{
if (mp_ops)
printk(KERN_WARNING "Overriding previously set SMP ops\n");
mp_ops = ops;
}
static inline void __init smp_store_cpu_info(unsigned int cpu)
{
struct sh_cpuinfo *c = cpu_data + cpu;
@ -46,7 +56,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
init_new_context(current, &init_mm);
current_thread_info()->cpu = cpu;
plat_prepare_cpus(max_cpus);
mp_ops->prepare_cpus(max_cpus);
#ifndef CONFIG_HOTPLUG_CPU
init_cpu_present(&cpu_possible_map);
@ -127,7 +137,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
(unsigned long)&stack_start + sizeof(stack_start));
wmb();
plat_start_cpu(cpu, (unsigned long)_stext);
mp_ops->start_cpu(cpu, (unsigned long)_stext);
timeout = jiffies + HZ;
while (time_before(jiffies, timeout)) {
@ -159,7 +169,7 @@ void __init smp_cpus_done(unsigned int max_cpus)
void smp_send_reschedule(int cpu)
{
plat_send_ipi(cpu, SMP_MSG_RESCHEDULE);
mp_ops->send_ipi(cpu, SMP_MSG_RESCHEDULE);
}
void smp_send_stop(void)
@ -172,12 +182,12 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
int cpu;
for_each_cpu(cpu, mask)
plat_send_ipi(cpu, SMP_MSG_FUNCTION);
mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION);
}
void arch_send_call_function_single_ipi(int cpu)
{
plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
mp_ops->send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
}
void smp_timer_broadcast(const struct cpumask *mask)
@ -185,7 +195,7 @@ void smp_timer_broadcast(const struct cpumask *mask)
int cpu;
for_each_cpu(cpu, mask)
plat_send_ipi(cpu, SMP_MSG_TIMER);
mp_ops->send_ipi(cpu, SMP_MSG_TIMER);
}
static void ipi_timer(void)