diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 10cb0f2d9b5b..a093a0d4dd69 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -58,7 +58,6 @@ #include <asm/irq.h> #include <asm/time.h> #include <asm/nvram.h> -#include <asm/plpar_wrappers.h> #include "xics.h" #include <asm/firmware.h> #include <asm/pmc.h> @@ -66,8 +65,9 @@ #include <asm/ppc-pci.h> #include <asm/i8259.h> #include <asm/udbg.h> +#include <asm/smp.h> -#include "rtas-fw.h" +#include "plpar_wrappers.h" #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) @@ -352,6 +352,17 @@ static void pSeries_mach_cpu_die(void) for(;;); } +static int pseries_set_dabr(unsigned long dabr) +{ + return plpar_hcall_norets(H_SET_DABR, dabr); +} + +static int pseries_set_xdabr(unsigned long dabr) +{ + /* We want to catch accesses from kernel and userspace */ + return plpar_hcall_norets(H_SET_XDABR, dabr, + H_DABRX_KERNEL | H_DABRX_USER); +} /* * Early initialization. Relocation is on but do not reference unbolted pages @@ -387,6 +398,10 @@ static void __init pSeries_init_early(void) DBG("Hello World !\n"); } + if (firmware_has_feature(FW_FEATURE_DABR)) + ppc_md.set_dabr = pseries_set_dabr; + else if (firmware_has_feature(FW_FEATURE_XDABR)) + ppc_md.set_dabr = pseries_set_xdabr; iommu_init_early_pSeries(); @@ -454,6 +469,7 @@ static inline void dedicated_idle_sleep(unsigned int cpu) * more. */ clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb__after_clear_bit(); /* * SMT dynamic mode. Cede will result in this thread going @@ -466,6 +482,7 @@ static inline void dedicated_idle_sleep(unsigned int cpu) cede_processor(); else local_irq_enable(); + set_thread_flag(TIF_POLLING_NRFLAG); } else { /* * Give the HV an opportunity at the processor, since we are @@ -477,11 +494,11 @@ static inline void dedicated_idle_sleep(unsigned int cpu) static void pseries_dedicated_idle(void) { - long oldval; struct paca_struct *lpaca = get_paca(); unsigned int cpu = smp_processor_id(); unsigned long start_snooze; unsigned long *smt_snooze_delay = &__get_cpu_var(smt_snooze_delay); + set_thread_flag(TIF_POLLING_NRFLAG); while (1) { /* @@ -490,10 +507,7 @@ static void pseries_dedicated_idle(void) */ lpaca->lppaca.idle = 1; - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - + if (!need_resched()) { start_snooze = __get_tb() + *smt_snooze_delay * tb_ticks_per_usec; @@ -516,15 +530,14 @@ static void pseries_dedicated_idle(void) } HMT_medium(); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); } lpaca->lppaca.idle = 0; ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) cpu_die(); @@ -568,7 +581,9 @@ static void pseries_shared_idle(void) lpaca->lppaca.idle = 0; ppc64_runlatch_on(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING) cpu_die(); @@ -591,9 +606,9 @@ struct machdep_calls __initdata pSeries_md = { .pcibios_fixup = pSeries_final_fixup, .pci_probe_mode = pSeries_pci_probe_mode, .irq_bus_setup = pSeries_irq_bus_setup, - .restart = rtas_fw_restart, - .power_off = rtas_fw_power_off, - .halt = rtas_fw_halt, + .restart = rtas_restart, + .power_off = rtas_power_off, + .halt = rtas_halt, .panic = rtas_os_term, .cpu_die = pSeries_mach_cpu_die, .get_boot_time = rtas_get_boot_time, |