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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/mips/mm/c-octeon.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/mips/mm/c-octeon.c')
-rw-r--r--ANDROID_3.4.5/arch/mips/mm/c-octeon.c327
1 files changed, 0 insertions, 327 deletions
diff --git a/ANDROID_3.4.5/arch/mips/mm/c-octeon.c b/ANDROID_3.4.5/arch/mips/mm/c-octeon.c
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--- a/ANDROID_3.4.5/arch/mips/mm/c-octeon.c
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@@ -1,327 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2005-2007 Cavium Networks
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/mm.h>
-#include <linux/bitops.h>
-#include <linux/cpu.h>
-#include <linux/io.h>
-
-#include <asm/bcache.h>
-#include <asm/bootinfo.h>
-#include <asm/cacheops.h>
-#include <asm/cpu-features.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/r4kcache.h>
-#include <asm/mmu_context.h>
-#include <asm/war.h>
-
-#include <asm/octeon/octeon.h>
-
-unsigned long long cache_err_dcache[NR_CPUS];
-
-/**
- * Octeon automatically flushes the dcache on tlb changes, so
- * from Linux's viewpoint it acts much like a physically
- * tagged cache. No flushing is needed
- *
- */
-static void octeon_flush_data_cache_page(unsigned long addr)
-{
- /* Nothing to do */
-}
-
-static inline void octeon_local_flush_icache(void)
-{
- asm volatile ("synci 0($0)");
-}
-
-/*
- * Flush local I-cache for the specified range.
- */
-static void local_octeon_flush_icache_range(unsigned long start,
- unsigned long end)
-{
- octeon_local_flush_icache();
-}
-
-/**
- * Flush caches as necessary for all cores affected by a
- * vma. If no vma is supplied, all cores are flushed.
- *
- * @vma: VMA to flush or NULL to flush all icaches.
- */
-static void octeon_flush_icache_all_cores(struct vm_area_struct *vma)
-{
- extern void octeon_send_ipi_single(int cpu, unsigned int action);
-#ifdef CONFIG_SMP
- int cpu;
- cpumask_t mask;
-#endif
-
- mb();
- octeon_local_flush_icache();
-#ifdef CONFIG_SMP
- preempt_disable();
- cpu = smp_processor_id();
-
- /*
- * If we have a vma structure, we only need to worry about
- * cores it has been used on
- */
- if (vma)
- mask = *mm_cpumask(vma->vm_mm);
- else
- mask = *cpu_online_mask;
- cpumask_clear_cpu(cpu, &mask);
- for_each_cpu(cpu, &mask)
- octeon_send_ipi_single(cpu, SMP_ICACHE_FLUSH);
-
- preempt_enable();
-#endif
-}
-
-
-/**
- * Called to flush the icache on all cores
- */
-static void octeon_flush_icache_all(void)
-{
- octeon_flush_icache_all_cores(NULL);
-}
-
-
-/**
- * Called to flush all memory associated with a memory
- * context.
- *
- * @mm: Memory context to flush
- */
-static void octeon_flush_cache_mm(struct mm_struct *mm)
-{
- /*
- * According to the R4K version of this file, CPUs without
- * dcache aliases don't need to do anything here
- */
-}
-
-
-/**
- * Flush a range of kernel addresses out of the icache
- *
- */
-static void octeon_flush_icache_range(unsigned long start, unsigned long end)
-{
- octeon_flush_icache_all_cores(NULL);
-}
-
-
-/**
- * Flush the icache for a trampoline. These are used for interrupt
- * and exception hooking.
- *
- * @addr: Address to flush
- */
-static void octeon_flush_cache_sigtramp(unsigned long addr)
-{
- struct vm_area_struct *vma;
-
- vma = find_vma(current->mm, addr);
- octeon_flush_icache_all_cores(vma);
-}
-
-
-/**
- * Flush a range out of a vma
- *
- * @vma: VMA to flush
- * @start:
- * @end:
- */
-static void octeon_flush_cache_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- if (vma->vm_flags & VM_EXEC)
- octeon_flush_icache_all_cores(vma);
-}
-
-
-/**
- * Flush a specific page of a vma
- *
- * @vma: VMA to flush page for
- * @page: Page to flush
- * @pfn:
- */
-static void octeon_flush_cache_page(struct vm_area_struct *vma,
- unsigned long page, unsigned long pfn)
-{
- if (vma->vm_flags & VM_EXEC)
- octeon_flush_icache_all_cores(vma);
-}
-
-static void octeon_flush_kernel_vmap_range(unsigned long vaddr, int size)
-{
- BUG();
-}
-
-/**
- * Probe Octeon's caches
- *
- */
-static void __cpuinit probe_octeon(void)
-{
- unsigned long icache_size;
- unsigned long dcache_size;
- unsigned int config1;
- struct cpuinfo_mips *c = &current_cpu_data;
-
- config1 = read_c0_config1();
- switch (c->cputype) {
- case CPU_CAVIUM_OCTEON:
- case CPU_CAVIUM_OCTEON_PLUS:
- c->icache.linesz = 2 << ((config1 >> 19) & 7);
- c->icache.sets = 64 << ((config1 >> 22) & 7);
- c->icache.ways = 1 + ((config1 >> 16) & 7);
- c->icache.flags |= MIPS_CACHE_VTAG;
- icache_size =
- c->icache.sets * c->icache.ways * c->icache.linesz;
- c->icache.waybit = ffs(icache_size / c->icache.ways) - 1;
- c->dcache.linesz = 128;
- if (c->cputype == CPU_CAVIUM_OCTEON_PLUS)
- c->dcache.sets = 2; /* CN5XXX has two Dcache sets */
- else
- c->dcache.sets = 1; /* CN3XXX has one Dcache set */
- c->dcache.ways = 64;
- dcache_size =
- c->dcache.sets * c->dcache.ways * c->dcache.linesz;
- c->dcache.waybit = ffs(dcache_size / c->dcache.ways) - 1;
- c->options |= MIPS_CPU_PREFETCH;
- break;
-
- case CPU_CAVIUM_OCTEON2:
- c->icache.linesz = 2 << ((config1 >> 19) & 7);
- c->icache.sets = 8;
- c->icache.ways = 37;
- c->icache.flags |= MIPS_CACHE_VTAG;
- icache_size = c->icache.sets * c->icache.ways * c->icache.linesz;
-
- c->dcache.linesz = 128;
- c->dcache.ways = 32;
- c->dcache.sets = 8;
- dcache_size = c->dcache.sets * c->dcache.ways * c->dcache.linesz;
- c->options |= MIPS_CPU_PREFETCH;
- break;
-
- default:
- panic("Unsupported Cavium Networks CPU type");
- break;
- }
-
- /* compute a couple of other cache variables */
- c->icache.waysize = icache_size / c->icache.ways;
- c->dcache.waysize = dcache_size / c->dcache.ways;
-
- c->icache.sets = icache_size / (c->icache.linesz * c->icache.ways);
- c->dcache.sets = dcache_size / (c->dcache.linesz * c->dcache.ways);
-
- if (smp_processor_id() == 0) {
- pr_notice("Primary instruction cache %ldkB, %s, %d way, "
- "%d sets, linesize %d bytes.\n",
- icache_size >> 10,
- cpu_has_vtag_icache ?
- "virtually tagged" : "physically tagged",
- c->icache.ways, c->icache.sets, c->icache.linesz);
-
- pr_notice("Primary data cache %ldkB, %d-way, %d sets, "
- "linesize %d bytes.\n",
- dcache_size >> 10, c->dcache.ways,
- c->dcache.sets, c->dcache.linesz);
- }
-}
-
-
-/**
- * Setup the Octeon cache flush routines
- *
- */
-void __cpuinit octeon_cache_init(void)
-{
- extern unsigned long ebase;
- extern char except_vec2_octeon;
-
- memcpy((void *)(ebase + 0x100), &except_vec2_octeon, 0x80);
- octeon_flush_cache_sigtramp(ebase + 0x100);
-
- probe_octeon();
-
- shm_align_mask = PAGE_SIZE - 1;
-
- flush_cache_all = octeon_flush_icache_all;
- __flush_cache_all = octeon_flush_icache_all;
- flush_cache_mm = octeon_flush_cache_mm;
- flush_cache_page = octeon_flush_cache_page;
- flush_cache_range = octeon_flush_cache_range;
- flush_cache_sigtramp = octeon_flush_cache_sigtramp;
- flush_icache_all = octeon_flush_icache_all;
- flush_data_cache_page = octeon_flush_data_cache_page;
- flush_icache_range = octeon_flush_icache_range;
- local_flush_icache_range = local_octeon_flush_icache_range;
-
- __flush_kernel_vmap_range = octeon_flush_kernel_vmap_range;
-
- build_clear_page();
- build_copy_page();
-}
-
-/**
- * Handle a cache error exception
- */
-
-static void cache_parity_error_octeon(int non_recoverable)
-{
- unsigned long coreid = cvmx_get_core_num();
- uint64_t icache_err = read_octeon_c0_icacheerr();
-
- pr_err("Cache error exception:\n");
- pr_err("cp0_errorepc == %lx\n", read_c0_errorepc());
- if (icache_err & 1) {
- pr_err("CacheErr (Icache) == %llx\n",
- (unsigned long long)icache_err);
- write_octeon_c0_icacheerr(0);
- }
- if (cache_err_dcache[coreid] & 1) {
- pr_err("CacheErr (Dcache) == %llx\n",
- (unsigned long long)cache_err_dcache[coreid]);
- cache_err_dcache[coreid] = 0;
- }
-
- if (non_recoverable)
- panic("Can't handle cache error: nested exception");
-}
-
-/**
- * Called when the the exception is recoverable
- */
-
-asmlinkage void cache_parity_error_octeon_recoverable(void)
-{
- cache_parity_error_octeon(0);
-}
-
-/**
- * Called when the the exception is not recoverable
- */
-
-asmlinkage void cache_parity_error_octeon_non_recoverable(void)
-{
- cache_parity_error_octeon(1);
-}