diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/cell/cbe_cpufreq.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/arch/powerpc/platforms/cell/cbe_cpufreq.c b/arch/powerpc/platforms/cell/cbe_cpufreq.c index 3586f529049..5820fb9a452 100644 --- a/arch/powerpc/platforms/cell/cbe_cpufreq.c +++ b/arch/powerpc/platforms/cell/cbe_cpufreq.c @@ -81,7 +81,7 @@ static int set_pmode_pmi(int cpu, unsigned int pmode) int ret; pmi_message_t pmi_msg; #ifdef DEBUG - u64 time; + long time; #endif pmi_msg.type = PMI_TYPE_FREQ_CHANGE; @@ -89,7 +89,7 @@ static int set_pmode_pmi(int cpu, unsigned int pmode) pmi_msg.data2 = pmode; #ifdef DEBUG - time = (u64) get_cycles(); + time = jiffies; #endif pmi_send_message(pmi_msg); @@ -98,9 +98,9 @@ static int set_pmode_pmi(int cpu, unsigned int pmode) pr_debug("PMI returned slow mode %d\n", ret); #ifdef DEBUG - time = (u64) get_cycles() - time; /* actual cycles (not cpu cycles!) */ - time = 1000000000 * time / CLOCK_TICK_RATE; /* time in ns (10^-9) */ - pr_debug("had to wait %lu ns for a transition\n", time); + time = jiffies - time; /* actual cycles (not cpu cycles!) */ + time = jiffies_to_msecs(time); + pr_debug("had to wait %lu ms for a transition using PMI.\n", time); #endif return ret; } @@ -123,15 +123,18 @@ static int set_pmode_reg(int cpu, unsigned int pmode) struct cbe_mic_tm_regs __iomem *mic_tm_regs; u64 flags; u64 value; +#ifdef DEBUG + long time; +#endif local_irq_save(flags); mic_tm_regs = cbe_get_cpu_mic_tm_regs(cpu); pmd_regs = cbe_get_cpu_pmd_regs(cpu); - pr_debug("pm register is mapped at %p\n", &pmd_regs->pmcr); - pr_debug("mic register is mapped at %p\n", &mic_tm_regs->slow_fast_timer_0); - +#ifdef DEBUG + time = jiffies; +#endif out_be64(&mic_tm_regs->slow_fast_timer_0, MIC_Slow_Fast_Timer_table[pmode]); out_be64(&mic_tm_regs->slow_fast_timer_1, MIC_Slow_Fast_Timer_table[pmode]); @@ -146,6 +149,7 @@ static int set_pmode_reg(int cpu, unsigned int pmode) out_be64(&pmd_regs->pmcr, value); +#ifdef DEBUG /* wait until new pmode appears in status register */ value = in_be64(&pmd_regs->pmsr) & 0x07; while(value != pmode) { @@ -153,6 +157,11 @@ static int set_pmode_reg(int cpu, unsigned int pmode) value = in_be64(&pmd_regs->pmsr) & 0x07; } + time = jiffies - time; + time = jiffies_to_msecs(time); + pr_debug("had to wait %lu ms for a transition using " \ + "the pervasive unit.\n", time); +#endif local_irq_restore(flags); return 0; |