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[POWERPC] PS3: Fix reading pm interval in logical performance monitor 

ps3_read_pm (pm_interval) should return an actual HW register value
because the pm_interval register is a counter register.
This removes the shadow pm_interval register.

Signed-off-by: Takashi Yamamoto <TakashiA.Yamamoto@jp.sony.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
hifive-unleashed-5.1
Takashi Yamamoto 2008-02-09 09:52:41 +11:00 committed by Paul Mackerras
parent a7faa8dc95
commit a0620156b0
1 changed files with 10 additions and 8 deletions
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18
drivers/ps3/ps3-lpm.c
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@ -76,7 +76,6 @@
*
* @pm_control: Shadow of the processor's pm_control register.
* @pm_start_stop: Shadow of the processor's pm_start_stop register.
* @pm_interval: Shadow of the processor's pm_interval register.
* @group_control: Shadow of the processor's group_control register.
* @debug_bus_control: Shadow of the processor's debug_bus_control register.
*
@ -91,7 +90,6 @@
struct ps3_lpm_shadow_regs {
u64 pm_control;
u64 pm_start_stop;
u64 pm_interval;
u64 group_control;
u64 debug_bus_control;
};
@ -408,7 +406,14 @@ u32 ps3_read_pm(u32 cpu, enum pm_reg_name reg)
case pm_start_stop:
return lpm_priv->shadow.pm_start_stop;
case pm_interval:
return lpm_priv->shadow.pm_interval;
result = lv1_set_lpm_interval(lpm_priv->lpm_id, 0, 0, &val);
if (result) {
val = 0;
dev_dbg(sbd_core(), "%s:%u: lv1 set_inteval failed: "
"reg %u, %s\n", __func__, __LINE__, reg,
ps3_result(result));
}
return (u32)val;
case group_control:
return lpm_priv->shadow.group_control;
case debug_bus_control:
@ -475,10 +480,8 @@ void ps3_write_pm(u32 cpu, enum pm_reg_name reg, u32 val)
lpm_priv->shadow.pm_control = val;
break;
case pm_interval:
if (val != lpm_priv->shadow.pm_interval)
result = lv1_set_lpm_interval(lpm_priv->lpm_id, val,
PS3_WRITE_PM_MASK, &dummy);
lpm_priv->shadow.pm_interval = val;
result = lv1_set_lpm_interval(lpm_priv->lpm_id, val,
PS3_WRITE_PM_MASK, &dummy);
break;
case pm_start_stop:
if (val != lpm_priv->shadow.pm_start_stop)
@ -1140,7 +1143,6 @@ int ps3_lpm_open(enum ps3_lpm_tb_type tb_type, void *tb_cache,
lpm_priv->shadow.pm_control = PS3_LPM_SHADOW_REG_INIT;
lpm_priv->shadow.pm_start_stop = PS3_LPM_SHADOW_REG_INIT;
lpm_priv->shadow.pm_interval = PS3_LPM_SHADOW_REG_INIT;
lpm_priv->shadow.group_control = PS3_LPM_SHADOW_REG_INIT;
lpm_priv->shadow.debug_bus_control = PS3_LPM_SHADOW_REG_INIT;