diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/Kconfig | 4 | ||||
| -rw-r--r-- | arch/mips/include/asm/smp-ops.h | 3 | ||||
| -rw-r--r-- | arch/mips/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/smp-cmp.c | 52 | ||||
| -rw-r--r-- | arch/mips/kernel/smp-gic.c | 53 |
5 files changed, 63 insertions, 50 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index dcae3a7035db..17f198914e6d 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1996,12 +1996,16 @@ config MIPS_VPE_APSP_API_MT config MIPS_CMP bool "MIPS CMP support" depends on SYS_SUPPORTS_MIPS_CMP && MIPS_MT_SMP + select MIPS_GIC_IPI select SYNC_R4K select WEAK_ORDERING default n help Enable Coherency Manager processor (CMP) support. +config MIPS_GIC_IPI + bool + config SB1_PASS_1_WORKAROUNDS bool depends on CPU_SB1_PASS_1 diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h index ef2a8041e78b..51458bb004da 100644 --- a/arch/mips/include/asm/smp-ops.h +++ b/arch/mips/include/asm/smp-ops.h @@ -58,6 +58,9 @@ static inline void register_smp_ops(struct plat_smp_ops *ops) #endif /* !CONFIG_SMP */ +extern void gic_send_ipi_single(int cpu, unsigned int action); +extern void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action); + static inline int register_up_smp_ops(void) { #ifdef CONFIG_SMP_UP diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 26c6175e1379..786a51ddbb78 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -53,6 +53,7 @@ obj-$(CONFIG_MIPS_MT_FPAFF) += mips-mt-fpaff.o obj-$(CONFIG_MIPS_MT_SMTC) += smtc.o smtc-asm.o smtc-proc.o obj-$(CONFIG_MIPS_MT_SMP) += smp-mt.o obj-$(CONFIG_MIPS_CMP) += smp-cmp.o +obj-$(CONFIG_MIPS_GIC_IPI) += smp-gic.o obj-$(CONFIG_CPU_MIPSR2) += spram.o obj-$(CONFIG_MIPS_VPE_LOADER) += vpe.o diff --git a/arch/mips/kernel/smp-cmp.c b/arch/mips/kernel/smp-cmp.c index 1b925d8a610c..594660ed19dc 100644 --- a/arch/mips/kernel/smp-cmp.c +++ b/arch/mips/kernel/smp-cmp.c @@ -39,54 +39,6 @@ #include <asm/amon.h> #include <asm/gic.h> -static void ipi_call_function(unsigned int cpu) -{ - pr_debug("CPU%d: %s cpu %d status %08x\n", - smp_processor_id(), __func__, cpu, read_c0_status()); - - gic_send_ipi(plat_ipi_call_int_xlate(cpu)); -} - - -static void ipi_resched(unsigned int cpu) -{ - pr_debug("CPU%d: %s cpu %d status %08x\n", - smp_processor_id(), __func__, cpu, read_c0_status()); - - gic_send_ipi(plat_ipi_resched_int_xlate(cpu)); -} - -/* - * FIXME: This isn't restricted to CMP - * The SMVP kernel could use GIC interrupts if available - */ -void cmp_send_ipi_single(int cpu, unsigned int action) -{ - unsigned long flags; - - local_irq_save(flags); - - switch (action) { - case SMP_CALL_FUNCTION: - ipi_call_function(cpu); - break; - - case SMP_RESCHEDULE_YOURSELF: - ipi_resched(cpu); - break; - } - - local_irq_restore(flags); -} - -static void cmp_send_ipi_mask(const struct cpumask *mask, unsigned int action) -{ - unsigned int i; - - for_each_cpu(i, mask) - cmp_send_ipi_single(i, action); -} - static void cmp_init_secondary(void) { struct cpuinfo_mips *c = ¤t_cpu_data; @@ -210,8 +162,8 @@ void __init cmp_prepare_cpus(unsigned int max_cpus) } struct plat_smp_ops cmp_smp_ops = { - .send_ipi_single = cmp_send_ipi_single, - .send_ipi_mask = cmp_send_ipi_mask, + .send_ipi_single = gic_send_ipi_single, + .send_ipi_mask = gic_send_ipi_mask, .init_secondary = cmp_init_secondary, .smp_finish = cmp_smp_finish, .cpus_done = cmp_cpus_done, diff --git a/arch/mips/kernel/smp-gic.c b/arch/mips/kernel/smp-gic.c new file mode 100644 index 000000000000..3bb1f92ab525 --- /dev/null +++ b/arch/mips/kernel/smp-gic.c @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2013 Imagination Technologies + * Author: Paul Burton <paul.burton@imgtec.com> + * + * Based on smp-cmp.c: + * Copyright (C) 2007 MIPS Technologies, Inc. + * Author: Chris Dearman (chris@mips.com) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/printk.h> + +#include <asm/gic.h> +#include <asm/smp-ops.h> + +void gic_send_ipi_single(int cpu, unsigned int action) +{ + unsigned long flags; + unsigned int intr; + + pr_debug("CPU%d: %s cpu %d action %u status %08x\n", + smp_processor_id(), __func__, cpu, action, read_c0_status()); + + local_irq_save(flags); + + switch (action) { + case SMP_CALL_FUNCTION: + intr = plat_ipi_call_int_xlate(cpu); + break; + + case SMP_RESCHEDULE_YOURSELF: + intr = plat_ipi_resched_int_xlate(cpu); + break; + + default: + BUG(); + } + + gic_send_ipi(intr); + local_irq_restore(flags); +} + +void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action) +{ + unsigned int i; + + for_each_cpu(i, mask) + gic_send_ipi_single(i, action); +} |