Commit 8c3a13c8 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "A set of fixes from various people - Will Deacon gets a prize for
  removing code this time around.  The biggest fix in this lot is
  sorting out the ARM740T mess.  The rest are relatively small fixes."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7699/1: sched_clock: Add more notrace to prevent recursion
  ARM: 7698/1: perf: fix group validation when using enable_on_exec
  ARM: 7697/1: hw_breakpoint: do not use __cpuinitdata for dbg_cpu_pm_nb
  ARM: 7696/1: Fix kexec by setting outer_cache.inv_all for Feroceon
  ARM: 7694/1: ARM, TCM: initialize TCM in paging_init(), instead of setup_arch()
  ARM: 7692/1: iop3xx: move IOP3XX_PERIPHERAL_VIRT_BASE
  ARM: modules: don't export cpu_set_pte_ext when !MMU
  ARM: mm: remove broken condition check for v4 flushing
  ARM: mm: fix numerous hideous errors in proc-arm740.S
  ARM: cache: remove ARMv3 support code
  ARM: tlbflush: remove ARMv3 support
parents 851b3f32 cea15092
......@@ -19,14 +19,6 @@
#undef _CACHE
#undef MULTI_CACHE
#if defined(CONFIG_CPU_CACHE_V3)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE v3
# endif
#endif
#if defined(CONFIG_CPU_CACHE_V4)
# ifdef _CACHE
# define MULTI_CACHE 1
......
......@@ -37,7 +37,7 @@ extern int iop3xx_get_init_atu(void);
* IOP3XX processor registers
*/
#define IOP3XX_PERIPHERAL_PHYS_BASE 0xffffe000
#define IOP3XX_PERIPHERAL_VIRT_BASE 0xfeffe000
#define IOP3XX_PERIPHERAL_VIRT_BASE 0xfedfe000
#define IOP3XX_PERIPHERAL_SIZE 0x00002000
#define IOP3XX_PERIPHERAL_UPPER_PA (IOP3XX_PERIPHERAL_PHYS_BASE +\
IOP3XX_PERIPHERAL_SIZE - 1)
......
......@@ -14,7 +14,6 @@
#include <asm/glue.h>
#define TLB_V3_PAGE (1 << 0)
#define TLB_V4_U_PAGE (1 << 1)
#define TLB_V4_D_PAGE (1 << 2)
#define TLB_V4_I_PAGE (1 << 3)
......@@ -22,7 +21,6 @@
#define TLB_V6_D_PAGE (1 << 5)
#define TLB_V6_I_PAGE (1 << 6)
#define TLB_V3_FULL (1 << 8)
#define TLB_V4_U_FULL (1 << 9)
#define TLB_V4_D_FULL (1 << 10)
#define TLB_V4_I_FULL (1 << 11)
......@@ -52,7 +50,6 @@
* =============
*
* We have the following to choose from:
* v3 - ARMv3
* v4 - ARMv4 without write buffer
* v4wb - ARMv4 with write buffer without I TLB flush entry instruction
* v4wbi - ARMv4 with write buffer with I TLB flush entry instruction
......@@ -330,7 +327,6 @@ static inline void local_flush_tlb_all(void)
if (tlb_flag(TLB_WB))
dsb();
tlb_op(TLB_V3_FULL, "c6, c0, 0", zero);
tlb_op(TLB_V4_U_FULL | TLB_V6_U_FULL, "c8, c7, 0", zero);
tlb_op(TLB_V4_D_FULL | TLB_V6_D_FULL, "c8, c6, 0", zero);
tlb_op(TLB_V4_I_FULL | TLB_V6_I_FULL, "c8, c5, 0", zero);
......@@ -351,9 +347,8 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm)
if (tlb_flag(TLB_WB))
dsb();
if (possible_tlb_flags & (TLB_V3_FULL|TLB_V4_U_FULL|TLB_V4_D_FULL|TLB_V4_I_FULL)) {
if (possible_tlb_flags & (TLB_V4_U_FULL|TLB_V4_D_FULL|TLB_V4_I_FULL)) {
if (cpumask_test_cpu(get_cpu(), mm_cpumask(mm))) {
tlb_op(TLB_V3_FULL, "c6, c0, 0", zero);
tlb_op(TLB_V4_U_FULL, "c8, c7, 0", zero);
tlb_op(TLB_V4_D_FULL, "c8, c6, 0", zero);
tlb_op(TLB_V4_I_FULL, "c8, c5, 0", zero);
......@@ -385,9 +380,8 @@ local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
if (tlb_flag(TLB_WB))
dsb();
if (possible_tlb_flags & (TLB_V3_PAGE|TLB_V4_U_PAGE|TLB_V4_D_PAGE|TLB_V4_I_PAGE|TLB_V4_I_FULL) &&
if (possible_tlb_flags & (TLB_V4_U_PAGE|TLB_V4_D_PAGE|TLB_V4_I_PAGE|TLB_V4_I_FULL) &&
cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) {
tlb_op(TLB_V3_PAGE, "c6, c0, 0", uaddr);
tlb_op(TLB_V4_U_PAGE, "c8, c7, 1", uaddr);
tlb_op(TLB_V4_D_PAGE, "c8, c6, 1", uaddr);
tlb_op(TLB_V4_I_PAGE, "c8, c5, 1", uaddr);
......@@ -418,7 +412,6 @@ static inline void local_flush_tlb_kernel_page(unsigned long kaddr)
if (tlb_flag(TLB_WB))
dsb();
tlb_op(TLB_V3_PAGE, "c6, c0, 0", kaddr);
tlb_op(TLB_V4_U_PAGE, "c8, c7, 1", kaddr);
tlb_op(TLB_V4_D_PAGE, "c8, c6, 1", kaddr);
tlb_op(TLB_V4_I_PAGE, "c8, c5, 1", kaddr);
......
......@@ -1043,7 +1043,7 @@ static int dbg_cpu_pm_notify(struct notifier_block *self, unsigned long action,
return NOTIFY_OK;
}
static struct notifier_block __cpuinitdata dbg_cpu_pm_nb = {
static struct notifier_block dbg_cpu_pm_nb = {
.notifier_call = dbg_cpu_pm_notify,
};
......
......@@ -253,7 +253,10 @@ validate_event(struct pmu_hw_events *hw_events,
struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
struct pmu *leader_pmu = event->group_leader->pmu;
if (event->pmu != leader_pmu || event->state <= PERF_EVENT_STATE_OFF)
if (event->pmu != leader_pmu || event->state < PERF_EVENT_STATE_OFF)
return 1;
if (event->state == PERF_EVENT_STATE_OFF && !event->attr.enable_on_exec)
return 1;
return armpmu->get_event_idx(hw_events, event) >= 0;
......
......@@ -45,12 +45,12 @@ static u32 notrace jiffy_sched_clock_read(void)
static u32 __read_mostly (*read_sched_clock)(void) = jiffy_sched_clock_read;
static inline u64 cyc_to_ns(u64 cyc, u32 mult, u32 shift)
static inline u64 notrace cyc_to_ns(u64 cyc, u32 mult, u32 shift)
{
return (cyc * mult) >> shift;
}
static unsigned long long cyc_to_sched_clock(u32 cyc, u32 mask)
static unsigned long long notrace cyc_to_sched_clock(u32 cyc, u32 mask)
{
u64 epoch_ns;
u32 epoch_cyc;
......
......@@ -56,7 +56,6 @@
#include <asm/virt.h>
#include "atags.h"
#include "tcm.h"
#if defined(CONFIG_FPE_NWFPE) || defined(CONFIG_FPE_FASTFPE)
......@@ -798,8 +797,6 @@ void __init setup_arch(char **cmdline_p)
reserve_crashkernel();
tcm_init();
#ifdef CONFIG_MULTI_IRQ_HANDLER
handle_arch_irq = mdesc->handle_irq;
#endif
......
......@@ -17,7 +17,6 @@
#include <asm/mach/map.h>
#include <asm/memory.h>
#include <asm/system_info.h>
#include "tcm.h"
static struct gen_pool *tcm_pool;
static bool dtcm_present;
......
......@@ -43,7 +43,7 @@ config CPU_ARM740T
depends on !MMU
select CPU_32v4T
select CPU_ABRT_LV4T
select CPU_CACHE_V3 # although the core is v4t
select CPU_CACHE_V4
select CPU_CP15_MPU
select CPU_PABRT_LEGACY
help
......@@ -469,9 +469,6 @@ config CPU_PABRT_V7
bool
# The cache model
config CPU_CACHE_V3
bool
config CPU_CACHE_V4
bool
......
......@@ -33,7 +33,6 @@ obj-$(CONFIG_CPU_PABRT_LEGACY) += pabort-legacy.o
obj-$(CONFIG_CPU_PABRT_V6) += pabort-v6.o
obj-$(CONFIG_CPU_PABRT_V7) += pabort-v7.o
obj-$(CONFIG_CPU_CACHE_V3) += cache-v3.o
obj-$(CONFIG_CPU_CACHE_V4) += cache-v4.o
obj-$(CONFIG_CPU_CACHE_V4WT) += cache-v4wt.o
obj-$(CONFIG_CPU_CACHE_V4WB) += cache-v4wb.o
......
......@@ -343,6 +343,7 @@ void __init feroceon_l2_init(int __l2_wt_override)
outer_cache.inv_range = feroceon_l2_inv_range;
outer_cache.clean_range = feroceon_l2_clean_range;
outer_cache.flush_range = feroceon_l2_flush_range;
outer_cache.inv_all = l2_inv_all;
enable_l2();
......
/*
* linux/arch/arm/mm/cache-v3.S
*
* Copyright (C) 1997-2002 Russell king
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/page.h>
#include "proc-macros.S"
/*
* flush_icache_all()
*
* Unconditionally clean and invalidate the entire icache.
*/
ENTRY(v3_flush_icache_all)
mov pc, lr
ENDPROC(v3_flush_icache_all)
/*
* flush_user_cache_all()
*
* Invalidate all cache entries in a particular address
* space.
*
* - mm - mm_struct describing address space
*/
ENTRY(v3_flush_user_cache_all)
/* FALLTHROUGH */
/*
* flush_kern_cache_all()
*
* Clean and invalidate the entire cache.
*/
ENTRY(v3_flush_kern_cache_all)
/* FALLTHROUGH */
/*
* flush_user_cache_range(start, end, flags)
*
* Invalidate a range of cache entries in the specified
* address space.
*
* - start - start address (may not be aligned)
* - end - end address (exclusive, may not be aligned)
* - flags - vma_area_struct flags describing address space
*/
ENTRY(v3_flush_user_cache_range)
mov ip, #0
mcreq p15, 0, ip, c7, c0, 0 @ flush ID cache
mov pc, lr
/*
* coherent_kern_range(start, end)
*
* Ensure coherency between the Icache and the Dcache in the
* region described by start. If you have non-snooping
* Harvard caches, you need to implement this function.
*
* - start - virtual start address
* - end - virtual end address
*/
ENTRY(v3_coherent_kern_range)
/* FALLTHROUGH */
/*
* coherent_user_range(start, end)
*
* Ensure coherency between the Icache and the Dcache in the
* region described by start. If you have non-snooping
* Harvard caches, you need to implement this function.
*
* - start - virtual start address
* - end - virtual end address
*/
ENTRY(v3_coherent_user_range)
mov r0, #0
mov pc, lr
/*
* flush_kern_dcache_area(void *page, size_t size)
*
* Ensure no D cache aliasing occurs, either with itself or
* the I cache
*
* - addr - kernel address
* - size - region size
*/
ENTRY(v3_flush_kern_dcache_area)
/* FALLTHROUGH */
/*
* dma_flush_range(start, end)
*
* Clean and invalidate the specified virtual address range.
*
* - start - virtual start address
* - end - virtual end address
*/
ENTRY(v3_dma_flush_range)
mov r0, #0
mcr p15, 0, r0, c7, c0, 0 @ flush ID cache
mov pc, lr
/*
* dma_unmap_area(start, size, dir)
* - start - kernel virtual start address
* - size - size of region
* - dir - DMA direction
*/
ENTRY(v3_dma_unmap_area)
teq r2, #DMA_TO_DEVICE
bne v3_dma_flush_range
/* FALLTHROUGH */
/*
* dma_map_area(start, size, dir)
* - start - kernel virtual start address
* - size - size of region
* - dir - DMA direction
*/
ENTRY(v3_dma_map_area)
mov pc, lr
ENDPROC(v3_dma_unmap_area)
ENDPROC(v3_dma_map_area)
.globl v3_flush_kern_cache_louis
.equ v3_flush_kern_cache_louis, v3_flush_kern_cache_all
__INITDATA
@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
define_cache_functions v3
......@@ -58,7 +58,7 @@ ENTRY(v4_flush_kern_cache_all)
ENTRY(v4_flush_user_cache_range)
#ifdef CONFIG_CPU_CP15
mov ip, #0
mcreq p15, 0, ip, c7, c7, 0 @ flush ID cache
mcr p15, 0, ip, c7, c7, 0 @ flush ID cache
mov pc, lr
#else
/* FALLTHROUGH */
......
......@@ -34,6 +34,7 @@
#include <asm/mach/pci.h>
#include "mm.h"
#include "tcm.h"
/*
* empty_zero_page is a special page that is used for
......@@ -1277,6 +1278,7 @@ void __init paging_init(struct machine_desc *mdesc)
dma_contiguous_remap();
devicemaps_init(mdesc);
kmap_init();
tcm_init();
top_pmd = pmd_off_k(0xffff0000);
......
......@@ -77,24 +77,27 @@ __arm740_setup:
mcr p15, 0, r0, c6, c0 @ set area 0, default
ldr r0, =(CONFIG_DRAM_BASE & 0xFFFFF000) @ base[31:12] of RAM
ldr r1, =(CONFIG_DRAM_SIZE >> 12) @ size of RAM (must be >= 4KB)
mov r2, #10 @ 11 is the minimum (4KB)
1: add r2, r2, #1 @ area size *= 2
mov r1, r1, lsr #1
ldr r3, =(CONFIG_DRAM_SIZE >> 12) @ size of RAM (must be >= 4KB)
mov r4, #10 @ 11 is the minimum (4KB)
1: add r4, r4, #1 @ area size *= 2
movs r3, r3, lsr #1
bne 1b @ count not zero r-shift
orr r0, r0, r2, lsl #1 @ the area register value
orr r0, r0, r4, lsl #1 @ the area register value
orr r0, r0, #1 @ set enable bit
mcr p15, 0, r0, c6, c1 @ set area 1, RAM
ldr r0, =(CONFIG_FLASH_MEM_BASE & 0xFFFFF000) @ base[31:12] of FLASH
ldr r1, =(CONFIG_FLASH_SIZE >> 12) @ size of FLASH (must be >= 4KB)
mov r2, #10 @ 11 is the minimum (4KB)
1: add r2, r2, #1 @ area size *= 2
mov r1, r1, lsr #1
ldr r3, =(CONFIG_FLASH_SIZE >> 12) @ size of FLASH (must be >= 4KB)
cmp r3, #0
moveq r0, #0
beq 2f
mov r4, #10 @ 11 is the minimum (4KB)
1: add r4, r4, #1 @ area size *= 2
movs r3, r3, lsr #1
bne 1b @ count not zero r-shift
orr r0, r0, r2, lsl #1 @ the area register value
orr r0, r0, r4, lsl #1 @ the area register value
orr r0, r0, #1 @ set enable bit
mcr p15, 0, r0, c6, c2 @ set area 2, ROM/FLASH
2: mcr p15, 0, r0, c6, c2 @ set area 2, ROM/FLASH
mov r0, #0x06
mcr p15, 0, r0, c2, c0 @ Region 1&2 cacheable
......@@ -137,13 +140,14 @@ __arm740_proc_info:
.long 0x41807400
.long 0xfffffff0
.long 0
.long 0
b __arm740_setup
.long cpu_arch_name
.long cpu_elf_name
.long HWCAP_SWP | HWCAP_HALF | HWCAP_26BIT
.long HWCAP_SWP | HWCAP_HALF | HWCAP_THUMB | HWCAP_26BIT
.long cpu_arm740_name
.long arm740_processor_functions
.long 0
.long 0
.long v3_cache_fns @ cache model
.long v4_cache_fns @ cache model
.size __arm740_proc_info, . - __arm740_proc_info
......@@ -17,7 +17,9 @@
#ifndef MULTI_CPU
EXPORT_SYMBOL(cpu_dcache_clean_area);
#ifdef CONFIG_MMU
EXPORT_SYMBOL(cpu_set_pte_ext);
#endif
#else
EXPORT_SYMBOL(processor);
#endif
......
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