From 57a2050c408620613c5715171364de2cc5566f22 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Sun, 4 Mar 2007 18:27:34 +0000 Subject: [MIPS] SMTC: De-obscure Malta hooks. Should now be understandable why the thing works ... Signed-off-by: Ralf Baechle --- arch/mips/mips-boards/malta/Makefile | 2 +- arch/mips/mips-boards/malta/malta_smp.c | 109 ------------------------------- arch/mips/mips-boards/malta/malta_smtc.c | 88 +++++++++++++++++++++++++ 3 files changed, 89 insertions(+), 110 deletions(-) delete mode 100644 arch/mips/mips-boards/malta/malta_smp.c create mode 100644 arch/mips/mips-boards/malta/malta_smtc.c (limited to 'arch') diff --git a/arch/mips/mips-boards/malta/Makefile b/arch/mips/mips-boards/malta/Makefile index cb7f349b051..377d9e8f250 100644 --- a/arch/mips/mips-boards/malta/Makefile +++ b/arch/mips/mips-boards/malta/Makefile @@ -21,4 +21,4 @@ obj-y := malta_int.o malta_setup.o obj-$(CONFIG_MTD) += malta_mtd.o -obj-$(CONFIG_SMP) += malta_smp.o +obj-$(CONFIG_MIPS_MT_SMTC) += malta_smtc.o diff --git a/arch/mips/mips-boards/malta/malta_smp.c b/arch/mips/mips-boards/malta/malta_smp.c deleted file mode 100644 index cf967170fe2..00000000000 --- a/arch/mips/mips-boards/malta/malta_smp.c +++ /dev/null @@ -1,109 +0,0 @@ -/* - * Malta Platform-specific hooks for SMP operation - */ - -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_MIPS_MT_SMTC -#include -#endif /* CONFIG_MIPS_MT_SMTC */ - -/* VPE/SMP Prototype implements platform interfaces directly */ -#if !defined(CONFIG_MIPS_MT_SMP) - -/* - * Cause the specified action to be performed on a targeted "CPU" - */ - -void core_send_ipi(int cpu, unsigned int action) -{ -/* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */ -#ifdef CONFIG_MIPS_MT_SMTC - smtc_send_ipi(cpu, LINUX_SMP_IPI, action); -#endif /* CONFIG_MIPS_MT_SMTC */ -} - -/* - * Platform "CPU" startup hook - */ - -void prom_boot_secondary(int cpu, struct task_struct *idle) -{ -#ifdef CONFIG_MIPS_MT_SMTC - smtc_boot_secondary(cpu, idle); -#endif /* CONFIG_MIPS_MT_SMTC */ -} - -/* - * Post-config but pre-boot cleanup entry point - */ - -void prom_init_secondary(void) -{ -#ifdef CONFIG_MIPS_MT_SMTC - void smtc_init_secondary(void); - int myvpe; - - /* Don't enable Malta I/O interrupts (IP2) for secondary VPEs */ - myvpe = read_c0_tcbind() & TCBIND_CURVPE; - if (myvpe != 0) { - /* Ideally, this should be done only once per VPE, but... */ - clear_c0_status(STATUSF_IP2); - set_c0_status(STATUSF_IP0 | STATUSF_IP1 | STATUSF_IP3 - | STATUSF_IP4 | STATUSF_IP5 | STATUSF_IP6 - | STATUSF_IP7); - } - - smtc_init_secondary(); -#endif /* CONFIG_MIPS_MT_SMTC */ -} - -/* - * Platform SMP pre-initialization - * - * As noted above, we can assume a single CPU for now - * but it may be multithreaded. - */ - -void plat_smp_setup(void) -{ - if (read_c0_config3() & (1<<2)) - mipsmt_build_cpu_map(0); -} - -void __init plat_prepare_cpus(unsigned int max_cpus) -{ - if (read_c0_config3() & (1<<2)) - mipsmt_prepare_cpus(); -} - -/* - * SMP initialization finalization entry point - */ - -void prom_smp_finish(void) -{ -#ifdef CONFIG_MIPS_MT_SMTC - smtc_smp_finish(); -#endif /* CONFIG_MIPS_MT_SMTC */ -} - -/* - * Hook for after all CPUs are online - */ - -void prom_cpus_done(void) -{ -} - -#endif /* CONFIG_MIPS32R2_MT_SMP */ diff --git a/arch/mips/mips-boards/malta/malta_smtc.c b/arch/mips/mips-boards/malta/malta_smtc.c new file mode 100644 index 00000000000..d1c80f63110 --- /dev/null +++ b/arch/mips/mips-boards/malta/malta_smtc.c @@ -0,0 +1,88 @@ +/* + * Malta Platform-specific hooks for SMP operation + */ +#include + +#include +#include +#include +#include + +/* VPE/SMP Prototype implements platform interfaces directly */ + +/* + * Cause the specified action to be performed on a targeted "CPU" + */ + +void core_send_ipi(int cpu, unsigned int action) +{ + /* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */ + smtc_send_ipi(cpu, LINUX_SMP_IPI, action); +} + +/* + * Platform "CPU" startup hook + */ + +void prom_boot_secondary(int cpu, struct task_struct *idle) +{ + smtc_boot_secondary(cpu, idle); +} + +/* + * Post-config but pre-boot cleanup entry point + */ + +void prom_init_secondary(void) +{ + void smtc_init_secondary(void); + int myvpe; + + /* Don't enable Malta I/O interrupts (IP2) for secondary VPEs */ + myvpe = read_c0_tcbind() & TCBIND_CURVPE; + if (myvpe != 0) { + /* Ideally, this should be done only once per VPE, but... */ + clear_c0_status(STATUSF_IP2); + set_c0_status(STATUSF_IP0 | STATUSF_IP1 | STATUSF_IP3 + | STATUSF_IP4 | STATUSF_IP5 | STATUSF_IP6 + | STATUSF_IP7); + } + + smtc_init_secondary(); +} + +/* + * Platform SMP pre-initialization + * + * As noted above, we can assume a single CPU for now + * but it may be multithreaded. + */ + +void plat_smp_setup(void) +{ + if (read_c0_config3() & (1<<2)) + mipsmt_build_cpu_map(0); +} + +void __init plat_prepare_cpus(unsigned int max_cpus) +{ + if (read_c0_config3() & (1<<2)) + mipsmt_prepare_cpus(); +} + +/* + * SMP initialization finalization entry point + */ + +void prom_smp_finish(void) +{ + smtc_smp_finish(); +} + +/* + * Hook for after all CPUs are online + */ + +void prom_cpus_done(void) +{ +} -- cgit v1.2.3