From 21ef14008dc1909f2d550dbfa458459af8309a14 Mon Sep 17 00:00:00 2001 From: jake Date: Mon, 20 May 2002 16:30:47 +0000 Subject: Add SMP aware cache flushing functions, which operate on a single physical page. These send IPIs if necessary in order to keep the caches in sync on all cpus. --- sys/sparc64/include/smp.h | 50 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) (limited to 'sys/sparc64/include/smp.h') diff --git a/sys/sparc64/include/smp.h b/sys/sparc64/include/smp.h index 958fa0c..03fbc04 100644 --- a/sys/sparc64/include/smp.h +++ b/sys/sparc64/include/smp.h @@ -57,6 +57,11 @@ struct cpu_start_args { struct tte csa_ttes[PCPU_PAGES]; }; +struct ipi_cache_args { + u_int ica_mask; + u_long ica_pa; +}; + struct ipi_tlb_args { u_int ita_mask; u_long ita_tlb; @@ -80,6 +85,7 @@ void ipi_all_but_self(u_int ipi); vm_offset_t mp_tramp_alloc(void); +extern struct ipi_cache_args ipi_cache_args; extern struct ipi_level_args ipi_level_args; extern struct ipi_tlb_args ipi_tlb_args; @@ -91,6 +97,8 @@ extern u_long mp_tramp_func; extern void mp_startup(void); +extern char tl_ipi_dcache_page_inval[]; +extern char tl_ipi_icache_page_inval[]; extern char tl_ipi_level[]; extern char tl_ipi_test[]; extern char tl_ipi_tlb_context_demap[]; @@ -99,6 +107,36 @@ extern char tl_ipi_tlb_range_demap[]; #ifdef SMP +static __inline void * +ipi_dcache_page_inval(vm_offset_t pa) +{ + struct ipi_cache_args *ica; + + if (smp_cpus == 1) + return (NULL); + ica = &ipi_cache_args; + ica->ica_mask = all_cpus; + ica->ica_pa = pa; + cpu_ipi_selected(all_cpus, 0, (u_long)tl_ipi_dcache_page_inval, + (u_long)ica); + return (&ica->ica_mask); +} + +static __inline void * +ipi_icache_page_inval(vm_offset_t pa) +{ + struct ipi_cache_args *ica; + + if (smp_cpus == 1) + return (NULL); + ica = &ipi_cache_args; + ica->ica_mask = all_cpus; + ica->ica_pa = pa; + cpu_ipi_selected(all_cpus, 0, (u_long)tl_ipi_icache_page_inval, + (u_long)ica); + return (&ica->ica_mask); +} + #ifdef _MACHINE_PMAP_H_ static __inline void * @@ -174,6 +212,18 @@ ipi_wait(void *cookie) #else static __inline void * +ipi_dcache_page_inval(vm_offset_t pa) +{ + return (NULL); +} + +static __inline void * +ipi_icache_page_inval(vm_offset_t pa) +{ + return (NULL); +} + +static __inline void * ipi_tlb_context_demap(struct pmap *pm) { return (NULL); -- cgit v1.1