X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fplatforms%2Fpseries%2Fsetup.c;h=042ecae107ac89066c5596ab0ccafe58161539d9;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=31867a701fcbfe25b20b29ae02a3c4b04e714515;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 31867a701..042ecae10 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -121,21 +121,20 @@ static void __init fwnmi_init(void) fwnmi_active = 1; } -void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc, - struct pt_regs *regs) +void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc) { - unsigned int cascade_irq = i8259_irq(regs); + unsigned int cascade_irq = i8259_irq(); if (cascade_irq != NO_IRQ) - generic_handle_irq(cascade_irq, regs); + generic_handle_irq(cascade_irq); desc->chip->eoi(irq); } static void __init pseries_mpic_init_IRQ(void) { struct device_node *np, *old, *cascade = NULL; - unsigned int *addrp; + const unsigned int *addrp; unsigned long intack = 0; - unsigned int *opprop; + const unsigned int *opprop; unsigned long openpic_addr = 0; unsigned int cascade_irq; int naddr, n, i, opplen; @@ -143,7 +142,7 @@ static void __init pseries_mpic_init_IRQ(void) np = of_find_node_by_path("/"); naddr = prom_n_addr_cells(np); - opprop = (unsigned int *) get_property(np, "platform-open-pic", &opplen); + opprop = get_property(np, "platform-open-pic", &opplen); if (opprop != 0) { openpic_addr = of_read_number(opprop, naddr); printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr); @@ -180,7 +179,7 @@ static void __init pseries_mpic_init_IRQ(void) cascade_irq = irq_of_parse_and_map(cascade, 0); if (cascade == NO_IRQ) { - printk(KERN_ERR "xics: failed to map cascade interrupt"); + printk(KERN_ERR "mpic: failed to map cascade interrupt"); return; } @@ -192,7 +191,7 @@ static void __init pseries_mpic_init_IRQ(void) break; if (strcmp(np->name, "pci") != 0) continue; - addrp = (u32 *)get_property(np, "8259-interrupt-acknowledge", + addrp = get_property(np, "8259-interrupt-acknowledge", NULL); if (addrp == NULL) continue; @@ -223,23 +222,37 @@ static void pseries_lpar_enable_pmcs(void) } #ifdef CONFIG_KEXEC -static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary) -{ - mpic_teardown_this_cpu(secondary); -} - -static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary) +static void pseries_kexec_cpu_down(int crash_shutdown, int secondary) { /* Don't risk a hypervisor call if we're crashing */ if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) { - unsigned long vpa = __pa(get_lppaca()); + unsigned long addr; + + addr = __pa(get_slb_shadow()); + if (unregister_slb_shadow(hard_smp_processor_id(), addr)) + printk("SLB shadow buffer deregistration of " + "cpu %u (hw_cpu_id %d) failed\n", + smp_processor_id(), + hard_smp_processor_id()); - if (unregister_vpa(hard_smp_processor_id(), vpa)) { + addr = __pa(get_lppaca()); + if (unregister_vpa(hard_smp_processor_id(), addr)) { printk("VPA deregistration of cpu %u (hw_cpu_id %d) " "failed\n", smp_processor_id(), hard_smp_processor_id()); } } +} + +static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary) +{ + pseries_kexec_cpu_down(crash_shutdown, secondary); + mpic_teardown_this_cpu(secondary); +} + +static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary) +{ + pseries_kexec_cpu_down(crash_shutdown, secondary); xics_teardown_cpu(secondary); } #endif /* CONFIG_KEXEC */ @@ -247,11 +260,11 @@ static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary) static void __init pseries_discover_pic(void) { struct device_node *np; - char *typep; + const char *typep; for (np = NULL; (np = of_find_node_by_name(np, "interrupt-controller"));) { - typep = (char *)get_property(np, "compatible", NULL); + typep = get_property(np, "compatible", NULL); if (strstr(typep, "open-pic")) { pSeries_mpic_node = of_node_get(np); ppc_md.init_IRQ = pseries_mpic_init_IRQ; @@ -328,23 +341,12 @@ static int __init pSeries_init_panel(void) { /* Manually leave the kernel version on the panel. */ ppc_md.progress("Linux ppc64\n", 0); - ppc_md.progress(system_utsname.release, 0); + ppc_md.progress(init_utsname()->version, 0); return 0; } arch_initcall(pSeries_init_panel); -static void pSeries_mach_cpu_die(void) -{ - local_irq_disable(); - idle_task_exit(); - xics_teardown_cpu(0); - rtas_stop_self(); - /* Should never get here... */ - BUG(); - for(;;); -} - static int pseries_set_dabr(unsigned long dabr) { return plpar_hcall_norets(H_SET_DABR, dabr); @@ -420,19 +422,14 @@ static int __init pSeries_probe_hypertas(unsigned long node, if (of_get_flat_dt_prop(node, "ibm,hypertas-functions", NULL) != NULL) powerpc_firmware_features |= FW_FEATURE_LPAR; - if (firmware_has_feature(FW_FEATURE_LPAR)) - hpte_init_lpar(); - else - hpte_init_native(); - return 1; } static int __init pSeries_probe(void) { unsigned long root = of_get_flat_dt_root(); - char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(), - "device_type", NULL); + char *dtype = of_get_flat_dt_prop(root, "device_type", NULL); + if (dtype == NULL) return 0; if (strcmp(dtype, "chrp")) @@ -450,6 +447,11 @@ static int __init pSeries_probe(void) /* Now try to figure out if we are running on LPAR */ of_scan_flat_dt(pSeries_probe_hypertas, NULL); + if (firmware_has_feature(FW_FEATURE_LPAR)) + hpte_init_lpar(); + else + hpte_init_native(); + DBG("Machine is%s LPAR !\n", (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not"); @@ -463,7 +465,6 @@ static void pseries_dedicated_idle_sleep(void) { unsigned int cpu = smp_processor_id(); unsigned long start_snooze; - unsigned long *smt_snooze_delay = &__get_cpu_var(smt_snooze_delay); /* * Indicate to the HV that we are idle. Now would be @@ -476,9 +477,9 @@ static void pseries_dedicated_idle_sleep(void) * has been checked recently. If we should poll for a little * while, do so. */ - if (*smt_snooze_delay) { + if (__get_cpu_var(smt_snooze_delay)) { start_snooze = get_tb() + - *smt_snooze_delay * tb_ticks_per_usec; + __get_cpu_var(smt_snooze_delay) * tb_ticks_per_usec; local_irq_enable(); set_thread_flag(TIF_POLLING_NRFLAG); @@ -498,24 +499,7 @@ static void pseries_dedicated_idle_sleep(void) goto out; } - /* - * If not SMT, cede processor. If CPU is running SMT - * cede if the other thread is not idle, so that it can - * go single-threaded. If the other thread is idle, - * we ask the hypervisor if it has pending work it - * wants to do and cede if it does. Otherwise we keep - * polling in order to reduce interrupt latency. - * - * Doing the cede when the other thread is active will - * result in this thread going dormant, meaning the other - * thread gets to run in single-threaded (ST) mode, which - * is slightly faster than SMT mode with this thread at - * very low priority. The cede enables interrupts, which - * doesn't matter here. - */ - if (!cpu_has_feature(CPU_FTR_SMT) || !lppaca[cpu ^ 1].idle - || poll_pending() == H_PENDING) - cede_processor(); + cede_processor(); out: HMT_medium(); @@ -558,12 +542,10 @@ define_machine(pseries) { .log_error = pSeries_log_error, .pcibios_fixup = pSeries_final_fixup, .pci_probe_mode = pSeries_pci_probe_mode, - .irq_bus_setup = pSeries_irq_bus_setup, .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, .get_rtc_time = rtas_get_rtc_time, .set_rtc_time = rtas_set_rtc_time,