From: Takashi Yamamoto Date: Fri, 8 Feb 2008 22:52:41 +0000 (+1100) Subject: [POWERPC] PS3: Fix reading pm interval in logical performance monitor X-Git-Tag: v2.6.25-rc2~10^2~12 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0620156b05f2e1b77801e8bca724d0ed650974d;p=linux-2.6 [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 Signed-off-by: Geoff Levand Signed-off-by: Paul Mackerras --- diff --git a/drivers/ps3/ps3-lpm.c b/drivers/ps3/ps3-lpm.c index 8a0b16bad8..6c9592ce49 100644 --- a/drivers/ps3/ps3-lpm.c +++ b/drivers/ps3/ps3-lpm.c @@ -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;