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Blackfin arch: remove hardware PM code, oprofile not use it 

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Graf Yang 2009-01-07 23:14:39 +08:00 committed by Bryan Wu
parent e32f55d9db
commit 172e65e778
8 changed files with 0 additions and 492 deletions
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6
arch/blackfin/Kconfig
View File

@ -1007,12 +1007,6 @@ config EBIU_FCTLVAL
hex "Flash Memory Bank Control Register"
depends on BF54x
default 6
config HARDWARE_PM
bool "OProfile use hardware porformance monitor"
depends on OPROFILE=y
default n
endmenu
#############################################################################

22
arch/blackfin/mach-common/interrupt.S
View File

@ -165,16 +165,6 @@ ENTRY(_evt_ivhw)
r0 = [p2];
[sp + PT_IPEND] = r0;
#ifdef CONFIG_HARDWARE_PM
r7 = [sp + PT_SEQSTAT];
r7 = r7 >>> 0xe;
r6 = 0x1F;
r7 = r7 & r6;
r5 = 0x12;
cc = r7 == r5;
if cc jump .Lcall_do_ovf; /* deal with performance counter overflow */
#endif
/* set the EXCAUSE to HWERR for trap_c */
r0 = [sp + PT_SEQSTAT];
R1.L = LO(VEC_HWERR);
@ -200,18 +190,6 @@ ENTRY(_evt_ivhw)
.Lcommon_restore_all_sys:
RESTORE_ALL_SYS
rti;
#ifdef CONFIG_HARDWARE_PM
.Lcall_do_ovf:
R0 = SP;
SP += -12;
call _pm_overflow;
SP += 12;
jump .Lcommon_restore_all_sys;
#endif
ENDPROC(_evt_ivhw)
/* Interrupt routine for evt2 (NMI).

12
arch/blackfin/mach-common/irqpanic.c
View File

@ -33,8 +33,6 @@
#include <asm/traps.h>
#include <asm/blackfin.h>
#include "../oprofile/op_blackfin.h"
#ifdef CONFIG_DEBUG_ICACHE_CHECK
#define L1_ICACHE_START 0xffa10000
#define L1_ICACHE_END 0xffa13fff
@ -134,13 +132,3 @@ asmlinkage void irq_panic(int reason, struct pt_regs *regs)
#endif
}
#ifdef CONFIG_HARDWARE_PM
/*
* call the handler of Performance overflow
*/
asmlinkage void pm_overflow(struct pt_regs *regs)
{
pm_overflow_handler(regs);
}
#endif

1
arch/blackfin/oprofile/Makefile
View File

@ -11,4 +11,3 @@ DRIVER_OBJS := $(addprefix ../../../drivers/oprofile/, \
timer_int.o )
oprofile-y := $(DRIVER_OBJS) common.o
oprofile-$(CONFIG_HARDWARE_PM) += op_model_bf533.o

119
arch/blackfin/oprofile/common.c
View File

@ -30,129 +30,10 @@
#include <linux/oprofile.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/errno.h>
#include <linux/mutex.h>
#include <linux/ptrace.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <asm/system.h>
#include <asm/blackfin.h>
#include "op_blackfin.h"
#define BFIN_533_ID 0xE5040003
#define BFIN_537_ID 0xE5040002
static int pfmon_enabled;
static struct mutex pfmon_lock;
struct op_bfin533_model *model;
struct op_counter_config ctr[OP_MAX_COUNTER];
static int op_bfin_setup(void)
{
int ret;
/* Pre-compute the values to stuff in the hardware registers. */
spin_lock(&oprofilefs_lock);
ret = model->reg_setup(ctr);
spin_unlock(&oprofilefs_lock);
return ret;
}
static void op_bfin_shutdown(void)
{
#if 0
/* what is the difference between shutdown and stop? */
#endif
}
static int op_bfin_start(void)
{
int ret = -EBUSY;
printk(KERN_INFO "KSDBG:in %s\n", __func__);
mutex_lock(&pfmon_lock);
if (!pfmon_enabled) {
ret = model->start(ctr);
pfmon_enabled = !ret;
}
mutex_unlock(&pfmon_lock);
return ret;
}
static void op_bfin_stop(void)
{
mutex_lock(&pfmon_lock);
if (pfmon_enabled) {
model->stop();
pfmon_enabled = 0;
}
mutex_unlock(&pfmon_lock);
}
static int op_bfin_create_files(struct super_block *sb, struct dentry *root)
{
int i;
for (i = 0; i < model->num_counters; ++i) {
struct dentry *dir;
char buf[3];
printk(KERN_INFO "Oprofile: creating files... \n");
snprintf(buf, sizeof buf, "%d", i);
dir = oprofilefs_mkdir(sb, root, buf);
oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled);
oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event);
oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count);
/*
* We dont support per counter user/kernel selection, but
* we leave the entries because userspace expects them
*/
oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
oprofilefs_create_ulong(sb, dir, "unit_mask",
&ctr[i].unit_mask);
}
return 0;
}
int __init oprofile_arch_init(struct oprofile_operations *ops)
{
#ifdef CONFIG_HARDWARE_PM
mutex_init(&pfmon_lock);
switch (bfin_read_CHIPID() & CHIPID_MANUFACTURE) {
case 0xca:
printk(KERN_INFO "Oprofile: cpu vendor is Analog Devices.\n");
model = &op_model_bfin533;
model->num_counters = 2;
break;
default:
return -ENODEV;
}
ops->cpu_type = model->name;
ops->create_files = op_bfin_create_files;
ops->setup = op_bfin_setup;
ops->shutdown = op_bfin_shutdown;
ops->start = op_bfin_start;
ops->stop = op_bfin_stop;
printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
ops->cpu_type);
return 0;
#else
return -1;
#endif
}
void oprofile_arch_exit(void)

98
arch/blackfin/oprofile/op_blackfin.h
View File

@ -1,98 +0,0 @@
/*
* File: arch/blackfin/oprofile/op_blackfin.h
* Based on:
* Author: Anton Blanchard <anton@au.ibm.com>
*
* Created:
* Description:
*
* Modified:
* Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
* Copyright 2004-2006 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef OP_BLACKFIN_H
#define OP_BLACKFIN_H 1
#define OP_MAX_COUNTER 2
#include <asm/blackfin.h>
/* Per-counter configuration as set via oprofilefs. */
struct op_counter_config {
unsigned long valid;
unsigned long enabled;
unsigned long event;
unsigned long count;
unsigned long kernel;
unsigned long user;
unsigned long unit_mask;
};
/* System-wide configuration as set via oprofilefs. */
struct op_system_config {
unsigned long enable_kernel;
unsigned long enable_user;
};
/* Per-arch configuration */
struct op_bfin533_model {
int (*reg_setup) (struct op_counter_config *);
int (*start) (struct op_counter_config *);
void (*stop) (void);
int num_counters;
char *name;
};
extern struct op_bfin533_model op_model_bfin533;
static inline unsigned int ctr_read(void)
{
unsigned int tmp;
tmp = bfin_read_PFCTL();
CSYNC();
return tmp;
}
static inline void ctr_write(unsigned int val)
{
bfin_write_PFCTL(val);
CSYNC();
}
static inline void count_read(unsigned int *count)
{
count[0] = bfin_read_PFCNTR0();
count[1] = bfin_read_PFCNTR1();
CSYNC();
}
static inline void count_write(unsigned int *count)
{
bfin_write_PFCNTR0(count[0]);
bfin_write_PFCNTR1(count[1]);
CSYNC();
}
extern int pm_overflow_handler(struct pt_regs *regs);
#endif

161
arch/blackfin/oprofile/op_model_bf533.c
View File

@ -1,161 +0,0 @@
/*
* File: arch/blackfin/oprofile/op_model_bf533.c
* Based on:
* Author: Anton Blanchard <anton@au.ibm.com>
*
* Created:
* Description:
*
* Modified:
* Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
* Copyright 2004-2006 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/oprofile.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/interrupt.h>
#include <linux/ptrace.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <asm/system.h>
#include <asm/processor.h>
#include <asm/blackfin.h>
#include "op_blackfin.h"
#define PM_ENABLE 0x01;
#define PM_CTL1_ENABLE 0x18
#define PM_CTL0_ENABLE 0xC000
#define COUNT_EDGE_ONLY 0x3000000
static int oprofile_running;
static unsigned curr_pfctl, curr_count[2];
static int bfin533_reg_setup(struct op_counter_config *ctr)
{
unsigned int pfctl = 0;
unsigned int count[2];
/* set Blackfin perf monitor regs with ctr */
if (ctr[0].enabled) {
pfctl |= (PM_CTL0_ENABLE | ((char)ctr[0].event << 5));
count[0] = 0xFFFFFFFF - ctr[0].count;
curr_count[0] = count[0];
}
if (ctr[1].enabled) {
pfctl |= (PM_CTL1_ENABLE | ((char)ctr[1].event << 16));
count[1] = 0xFFFFFFFF - ctr[1].count;
curr_count[1] = count[1];
}
pr_debug("ctr[0].enabled=%d,ctr[1].enabled=%d,ctr[0].event<<5=0x%x,ctr[1].event<<16=0x%x\n", ctr[0].enabled, ctr[1].enabled, ctr[0].event << 5, ctr[1].event << 16);
pfctl |= COUNT_EDGE_ONLY;
curr_pfctl = pfctl;
pr_debug("write 0x%x to pfctl\n", pfctl);
ctr_write(pfctl);
count_write(count);
return 0;
}
static int bfin533_start(struct op_counter_config *ctr)
{
unsigned int pfctl = ctr_read();
pfctl |= PM_ENABLE;
curr_pfctl = pfctl;
ctr_write(pfctl);
oprofile_running = 1;
pr_debug("start oprofile counter \n");
return 0;
}
static void bfin533_stop(void)
{
int pfctl;
pfctl = ctr_read();
pfctl &= ~PM_ENABLE;
/* freeze counters */
ctr_write(pfctl);
oprofile_running = 0;
pr_debug("stop oprofile counter \n");
}
static int get_kernel(void)
{
int ipend, is_kernel;
ipend = bfin_read_IPEND();
/* test bit 15 */
is_kernel = ((ipend & 0x8000) != 0);
return is_kernel;
}
int pm_overflow_handler(struct pt_regs *regs)
{
int is_kernel;
int i, cpu;
unsigned int pc, pfctl;
unsigned int count[2];
pr_debug("get interrupt in %s\n", __func__);
if (oprofile_running == 0) {
pr_debug("error: entering interrupt when oprofile is stopped.\n\r");
return -1;
}
is_kernel = get_kernel();
cpu = smp_processor_id();
pc = regs->pc;
pfctl = ctr_read();
/* read the two event counter regs */
count_read(count);
/* if the counter overflows, add sample to oprofile buffer */
for (i = 0; i < 2; ++i) {
if (oprofile_running) {
oprofile_add_sample(regs, i);
}
}
/* reset the perfmon counter */
ctr_write(curr_pfctl);
count_write(curr_count);
return 0;
}
struct op_bfin533_model op_model_bfin533 = {
.reg_setup = bfin533_reg_setup,
.start = bfin533_start,
.stop = bfin533_stop,
.num_counters = 2,
.name = "blackfin/bf533"
};

73
arch/blackfin/oprofile/timer_int.c
View File

@ -1,73 +0,0 @@
/*
* File: arch/blackfin/oprofile/timer_int.c
* Based on:
* Author: Michael Kang
*
* Created:
* Description:
*
* Modified:
* Copyright 2004-2006 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/irq.h>
#include <linux/oprofile.h>
#include <linux/ptrace.h>
static void enable_sys_timer0()
{
}
static void disable_sys_timer0()
{
}
static irqreturn_t sys_timer0_int_handler(int irq, void *dev_id,
struct pt_regs *regs)
{
oprofile_add_sample(regs, 0);
return IRQ_HANDLED;
}
static int sys_timer0_start(void)
{
enable_sys_timer0();
return request_irq(IVG11, sys_timer0_int_handler, 0, "sys_timer0", NULL);
}
static void sys_timer0_stop(void)
{
disable_sys_timer();
}
int __init sys_timer0_init(struct oprofile_operations *ops)
{
extern int nmi_active;
if (nmi_active <= 0)
return -ENODEV;
ops->start = timer_start;
ops->stop = timer_stop;
ops->cpu_type = "timer";
printk(KERN_INFO "oprofile: using NMI timer interrupt.\n");
return 0;
}