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Merge branches 'fixes', 'misc', 'pm' and 'sa1100' into for-next

This commit is contained in:
Russell King 2014-12-05 16:30:47 +00:00
parent 3f4aa45cee 13d1b9575a b816ccc5c0 86d88bfca4
commit fbe4dd088f
81 changed files with 1201 additions and 796 deletions
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4
Documentation/power/runtime_pm.txt
View File

@ -468,6 +468,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
- set the power.irq_safe flag for the device, causing the runtime-PM
callbacks to be invoked with interrupts off
bool pm_runtime_is_irq_safe(struct device *dev);
- return true if power.irq_safe flag was set for the device, causing
the runtime-PM callbacks to be invoked with interrupts off
void pm_runtime_mark_last_busy(struct device *dev);
- set the power.last_busy field to the current time

2
arch/arm/Kconfig
View File

@ -702,7 +702,9 @@ config ARCH_SA1100
select CPU_SA1100
select GENERIC_CLOCKEVENTS
select HAVE_IDE
select IRQ_DOMAIN
select ISA
select MULTI_IRQ_HANDLER
select NEED_MACH_MEMORY_H
select SPARSE_IRQ
help

13
arch/arm/common/sa1111.c
View File

@ -282,8 +282,8 @@ static int sa1111_retrigger_lowirq(struct irq_data *d)
}
if (i == 8)
printk(KERN_ERR "Danger Will Robinson: failed to "
"re-trigger IRQ%d\n", d->irq);
pr_err("Danger Will Robinson: failed to re-trigger IRQ%d\n",
d->irq);
return i == 8 ? -1 : 0;
}
@ -384,8 +384,8 @@ static int sa1111_retrigger_highirq(struct irq_data *d)
}
if (i == 8)
printk(KERN_ERR "Danger Will Robinson: failed to "
"re-trigger IRQ%d\n", d->irq);
pr_err("Danger Will Robinson: failed to re-trigger IRQ%d\n",
d->irq);
return i == 8 ? -1 : 0;
}
@ -740,9 +740,8 @@ static int __sa1111_probe(struct device *me, struct resource *mem, int irq)
goto err_unmap;
}
printk(KERN_INFO "SA1111 Microprocessor Companion Chip: "
"silicon revision %lx, metal revision %lx\n",
(id & SKID_SIREV_MASK)>>4, (id & SKID_MTREV_MASK));
pr_info("SA1111 Microprocessor Companion Chip: silicon revision %lx, metal revision %lx\n",
(id & SKID_SIREV_MASK) >> 4, id & SKID_MTREV_MASK);
/*
* We found it. Wake the chip up, and initialise.

1
arch/arm/include/asm/hw_irq.h
View File

@ -8,6 +8,7 @@ static inline void ack_bad_irq(int irq)
{
extern unsigned long irq_err_count;
irq_err_count++;
pr_crit("unexpected IRQ trap at vector %02x\n", irq);
}
void set_irq_flags(unsigned int irq, unsigned int flags);

17
arch/arm/include/asm/mcpm.h
View File

@ -219,6 +219,23 @@ void __mcpm_outbound_leave_critical(unsigned int cluster, int state);
bool __mcpm_outbound_enter_critical(unsigned int this_cpu, unsigned int cluster);
int __mcpm_cluster_state(unsigned int cluster);
/**
* mcpm_sync_init - Initialize the cluster synchronization support
*
* @power_up_setup: platform specific function invoked during very
* early CPU/cluster bringup stage.
*
* This prepares memory used by vlocks and the MCPM state machine used
* across CPUs that may have their caches active or inactive. Must be
* called only after a successful call to mcpm_platform_register().
*
* The power_up_setup argument is a pointer to assembly code called when
* the MMU and caches are still disabled during boot and no stack space is
* available. The affinity level passed to that code corresponds to the
* resource that needs to be initialized (e.g. 1 for cluster level, 0 for
* CPU level). Proper exclusion mechanisms are already activated at that
* point.
*/
int __init mcpm_sync_init(
void (*power_up_setup)(unsigned int affinity_level));

4
arch/arm/include/asm/percpu.h
View File

@ -30,14 +30,14 @@ static inline void set_my_cpu_offset(unsigned long off)
static inline unsigned long __my_cpu_offset(void)
{
unsigned long off;
register unsigned long *sp asm ("sp");
/*
* Read TPIDRPRW.
* We want to allow caching the value, so avoid using volatile and
* instead use a fake stack read to hazard against barrier().
*/
asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) : "Q" (*sp));
asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off)
: "Q" (*(const unsigned long *)current_stack_pointer));
return off;
}

10
arch/arm/include/asm/pgalloc.h
View File

@ -157,7 +157,15 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
static inline void
pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
{
__pmd_populate(pmdp, page_to_phys(ptep), _PAGE_USER_TABLE);
extern pmdval_t user_pmd_table;
pmdval_t prot;
if (__LINUX_ARM_ARCH__ >= 6 && !IS_ENABLED(CONFIG_ARM_LPAE))
prot = user_pmd_table;
else
prot = _PAGE_USER_TABLE;
__pmd_populate(pmdp, page_to_phys(ptep), prot);
}
#define pmd_pgtable(pmd) pmd_page(pmd)

2
arch/arm/include/asm/pgtable-2level-hwdef.h
View File

@ -20,12 +20,14 @@
#define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0)
#define PMD_TYPE_TABLE (_AT(pmdval_t, 1) << 0)
#define PMD_TYPE_SECT (_AT(pmdval_t, 2) << 0)
#define PMD_PXNTABLE (_AT(pmdval_t, 1) << 2) /* v7 */
#define PMD_BIT4 (_AT(pmdval_t, 1) << 4)
#define PMD_DOMAIN(x) (_AT(pmdval_t, (x)) << 5)
#define PMD_PROTECTION (_AT(pmdval_t, 1) << 9) /* v5 */
/*
* - section
*/
#define PMD_SECT_PXN (_AT(pmdval_t, 1) << 0) /* v7 */
#define PMD_SECT_BUFFERABLE (_AT(pmdval_t, 1) << 2)
#define PMD_SECT_CACHEABLE (_AT(pmdval_t, 1) << 3)
#define PMD_SECT_XN (_AT(pmdval_t, 1) << 4) /* v6 */

1
arch/arm/include/asm/pgtable-3level-hwdef.h
View File

@ -76,6 +76,7 @@
#define PTE_EXT_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */
#define PTE_EXT_AF (_AT(pteval_t, 1) << 10) /* Access Flag */
#define PTE_EXT_NG (_AT(pteval_t, 1) << 11) /* nG */
#define PTE_EXT_PXN (_AT(pteval_t, 1) << 53) /* PXN */
#define PTE_EXT_XN (_AT(pteval_t, 1) << 54) /* XN */
/*

60
arch/arm/include/asm/pgtable.h
View File

@ -252,17 +252,57 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
set_pte_ext(ptep, pteval, ext);
}
#define PTE_BIT_FUNC(fn,op) \
static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; }
static inline pte_t clear_pte_bit(pte_t pte, pgprot_t prot)
{
pte_val(pte) &= ~pgprot_val(prot);
return pte;
}
PTE_BIT_FUNC(wrprotect, |= L_PTE_RDONLY);
PTE_BIT_FUNC(mkwrite, &= ~L_PTE_RDONLY);
PTE_BIT_FUNC(mkclean, &= ~L_PTE_DIRTY);
PTE_BIT_FUNC(mkdirty, |= L_PTE_DIRTY);
PTE_BIT_FUNC(mkold, &= ~L_PTE_YOUNG);
PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG);
PTE_BIT_FUNC(mkexec, &= ~L_PTE_XN);
PTE_BIT_FUNC(mknexec, |= L_PTE_XN);
static inline pte_t set_pte_bit(pte_t pte, pgprot_t prot)
{
pte_val(pte) |= pgprot_val(prot);
return pte;
}
static inline pte_t pte_wrprotect(pte_t pte)
{
return set_pte_bit(pte, __pgprot(L_PTE_RDONLY));
}
static inline pte_t pte_mkwrite(pte_t pte)
{
return clear_pte_bit(pte, __pgprot(L_PTE_RDONLY));
}
static inline pte_t pte_mkclean(pte_t pte)
{
return clear_pte_bit(pte, __pgprot(L_PTE_DIRTY));
}
static inline pte_t pte_mkdirty(pte_t pte)
{
return set_pte_bit(pte, __pgprot(L_PTE_DIRTY));
}
static inline pte_t pte_mkold(pte_t pte)
{
return clear_pte_bit(pte, __pgprot(L_PTE_YOUNG));
}
static inline pte_t pte_mkyoung(pte_t pte)
{
return set_pte_bit(pte, __pgprot(L_PTE_YOUNG));
}
static inline pte_t pte_mkexec(pte_t pte)
{
return clear_pte_bit(pte, __pgprot(L_PTE_XN));
}
static inline pte_t pte_mknexec(pte_t pte)
{
return set_pte_bit(pte, __pgprot(L_PTE_XN));
}
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{

5
arch/arm/include/asm/ptrace.h
View File

@ -154,9 +154,8 @@ static inline unsigned long user_stack_pointer(struct pt_regs *regs)
return regs->ARM_sp;
}
#define current_pt_regs(void) ({ \
register unsigned long sp asm ("sp"); \
(struct pt_regs *)((sp | (THREAD_SIZE - 1)) - 7) - 1; \
#define current_pt_regs(void) ({ (struct pt_regs *) \
((current_stack_pointer | (THREAD_SIZE - 1)) - 7) - 1; \
})
#endif /* __ASSEMBLY__ */

9
arch/arm/include/asm/thread_info.h
View File

@ -89,6 +89,11 @@ struct thread_info {
#define init_thread_info (init_thread_union.thread_info)
#define init_stack (init_thread_union.stack)
/*
* how to get the current stack pointer in C
*/
register unsigned long current_stack_pointer asm ("sp");
/*
* how to get the thread information struct from C
*/
@ -96,8 +101,8 @@ static inline struct thread_info *current_thread_info(void) __attribute_const__;
static inline struct thread_info *current_thread_info(void)
{
register unsigned long sp asm ("sp");
return (struct thread_info *)(sp & ~(THREAD_SIZE - 1));
return (struct thread_info *)
(current_stack_pointer & ~(THREAD_SIZE - 1));
}
#define thread_saved_pc(tsk) \

5
arch/arm/include/asm/vfp.h
View File

@ -22,6 +22,7 @@
#define FPSID_NODOUBLE (1<<20)
#define FPSID_ARCH_BIT (16)
#define FPSID_ARCH_MASK (0xF << FPSID_ARCH_BIT)
#define FPSID_CPUID_ARCH_MASK (0x7F << FPSID_ARCH_BIT)
#define FPSID_PART_BIT (8)
#define FPSID_PART_MASK (0xFF << FPSID_PART_BIT)
#define FPSID_VARIANT_BIT (4)
@ -75,6 +76,10 @@
/* MVFR0 bits */
#define MVFR0_A_SIMD_BIT (0)
#define MVFR0_A_SIMD_MASK (0xf << MVFR0_A_SIMD_BIT)
#define MVFR0_SP_BIT (4)
#define MVFR0_SP_MASK (0xf << MVFR0_SP_BIT)
#define MVFR0_DP_BIT (8)
#define MVFR0_DP_MASK (0xf << MVFR0_DP_BIT)
/* Bit patterns for decoding the packaged operation descriptors */
#define VFPOPDESC_LENGTH_BIT (9)

2
arch/arm/kernel/Makefile
View File

@ -47,6 +47,7 @@ endif
obj-$(CONFIG_HAVE_ARM_SCU) += smp_scu.o
obj-$(CONFIG_HAVE_ARM_TWD) += smp_twd.o
obj-$(CONFIG_ARM_ARCH_TIMER) += arch_timer.o
obj-$(CONFIG_FUNCTION_TRACER) += entry-ftrace.o
obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o insn.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o insn.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o insn.o patch.o
@ -84,6 +85,7 @@ obj-$(CONFIG_CPU_PJ4B) += pj4-cp0.o
obj-$(CONFIG_IWMMXT) += iwmmxt.o
obj-$(CONFIG_PERF_EVENTS) += perf_regs.o
obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o perf_event_cpu.o
CFLAGS_pj4-cp0.o := -marm
AFLAGS_iwmmxt.o := -Wa,-mcpu=iwmmxt
obj-$(CONFIG_ARM_CPU_TOPOLOGY) += topology.o

6
arch/arm/kernel/atags_compat.c
View File

@ -97,8 +97,7 @@ static void __init build_tag_list(struct param_struct *params, void *taglist)
struct tag *tag = taglist;
if (params->u1.s.page_size != PAGE_SIZE) {
printk(KERN_WARNING "Warning: bad configuration page, "
"trying to continue\n");
pr_warn("Warning: bad configuration page, trying to continue\n");
return;
}
@ -109,8 +108,7 @@ static void __init build_tag_list(struct param_struct *params, void *taglist)
params->u1.s.nr_pages != 0x04000 &&
params->u1.s.nr_pages != 0x08000 &&
params->u1.s.nr_pages != 0x10000) {
printk(KERN_WARNING "Warning: bad NeTTrom parameters "
"detected, using defaults\n");
pr_warn("Warning: bad NeTTrom parameters detected, using defaults\n");
params->u1.s.nr_pages = 0x1000; /* 16MB */
params->u1.s.ramdisk_size = 0;

5
arch/arm/kernel/atags_parse.c
View File

@ -167,8 +167,7 @@ static void __init parse_tags(const struct tag *t)
{
for (; t->hdr.size; t = tag_next(t))
if (!parse_tag(t))
printk(KERN_WARNING
"Ignoring unrecognised tag 0x%08x\n",
pr_warn("Ignoring unrecognised tag 0x%08x\n",
t->hdr.tag);
}
@ -193,7 +192,7 @@ setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr)
*/
for_each_machine_desc(p)
if (machine_nr == p->nr) {
printk("Machine: %s\n", p->name);
pr_info("Machine: %s\n", p->name);
mdesc = p;
break;
}

4
arch/arm/kernel/atags_proc.c
View File

@ -41,7 +41,7 @@ static int __init init_atags_procfs(void)
size_t size;
if (tag->hdr.tag != ATAG_CORE) {
printk(KERN_INFO "No ATAGs?");
pr_info("No ATAGs?");
return -EINVAL;
}
@ -68,7 +68,7 @@ static int __init init_atags_procfs(void)
nomem:
kfree(b);
printk(KERN_ERR "Exporting ATAGs: not enough memory\n");
pr_err("Exporting ATAGs: not enough memory\n");
return -ENOMEM;
}

2
arch/arm/kernel/bios32.c
View File

@ -355,7 +355,7 @@ void pcibios_fixup_bus(struct pci_bus *bus)
/*
* Report what we did for this bus
*/
printk(KERN_INFO "PCI: bus%d: Fast back to back transfers %sabled\n",
pr_info("PCI: bus%d: Fast back to back transfers %sabled\n",
bus->number, (features & PCI_COMMAND_FAST_BACK) ? "en" : "dis");
}
EXPORT_SYMBOL(pcibios_fixup_bus);

4
arch/arm/kernel/dma-isa.c
View File

@ -213,8 +213,8 @@ void __init isa_init_dma(void)
for (chan = 0; chan < 8; chan++) {
int ret = isa_dma_add(chan, &isa_dma[chan]);
if (ret)
printk(KERN_ERR "ISADMA%u: unable to register: %d\n",
chan, ret);
pr_err("ISADMA%u: unable to register: %d\n",
chan, ret);
}
request_dma(DMA_ISA_CASCADE, "cascade");

26
arch/arm/kernel/dma.c
View File

@ -79,7 +79,7 @@ int request_dma(unsigned int chan, const char *device_id)
return ret;
bad_dma:
printk(KERN_ERR "dma: trying to allocate DMA%d\n", chan);
pr_err("dma: trying to allocate DMA%d\n", chan);
return -EINVAL;
busy:
@ -100,7 +100,7 @@ void free_dma(unsigned int chan)
goto bad_dma;
if (dma->active) {
printk(KERN_ERR "dma%d: freeing active DMA\n", chan);
pr_err("dma%d: freeing active DMA\n", chan);
dma->d_ops->disable(chan, dma);
dma->active = 0;
}
@ -111,11 +111,11 @@ void free_dma(unsigned int chan)
return;
}
printk(KERN_ERR "dma%d: trying to free free DMA\n", chan);
pr_err("dma%d: trying to free free DMA\n", chan);
return;
bad_dma:
printk(KERN_ERR "dma: trying to free DMA%d\n", chan);
pr_err("dma: trying to free DMA%d\n", chan);
}
EXPORT_SYMBOL(free_dma);
@ -126,8 +126,7 @@ void set_dma_sg (unsigned int chan, struct scatterlist *sg, int nr_sg)
dma_t *dma = dma_channel(chan);
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA SG while "
"DMA active\n", chan);
pr_err("dma%d: altering DMA SG while DMA active\n", chan);
dma->sg = sg;
dma->sgcount = nr_sg;
@ -144,8 +143,7 @@ void __set_dma_addr (unsigned int chan, void *addr)
dma_t *dma = dma_channel(chan);
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA address while "
"DMA active\n", chan);
pr_err("dma%d: altering DMA address while DMA active\n", chan);
dma->sg = NULL;
dma->addr = addr;
@ -162,8 +160,7 @@ void set_dma_count (unsigned int chan, unsigned long count)
dma_t *dma = dma_channel(chan);
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA count while "
"DMA active\n", chan);
pr_err("dma%d: altering DMA count while DMA active\n", chan);
dma->sg = NULL;
dma->count = count;
@ -178,8 +175,7 @@ void set_dma_mode (unsigned int chan, unsigned int mode)
dma_t *dma = dma_channel(chan);
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA mode while "
"DMA active\n", chan);
pr_err("dma%d: altering DMA mode while DMA active\n", chan);
dma->dma_mode = mode;
dma->invalid = 1;
@ -202,7 +198,7 @@ void enable_dma (unsigned int chan)
return;
free_dma:
printk(KERN_ERR "dma%d: trying to enable free DMA\n", chan);
pr_err("dma%d: trying to enable free DMA\n", chan);
BUG();
}
EXPORT_SYMBOL(enable_dma);
@ -223,7 +219,7 @@ void disable_dma (unsigned int chan)
return;
free_dma:
printk(KERN_ERR "dma%d: trying to disable free DMA\n", chan);
pr_err("dma%d: trying to disable free DMA\n", chan);
BUG();
}
EXPORT_SYMBOL(disable_dma);
@ -240,7 +236,7 @@ EXPORT_SYMBOL(dma_channel_active);
void set_dma_page(unsigned int chan, char pagenr)
{
printk(KERN_ERR "dma%d: trying to set_dma_page\n", chan);
pr_err("dma%d: trying to set_dma_page\n", chan);
}
EXPORT_SYMBOL(set_dma_page);

235
arch/arm/kernel/entry-common.S
View File

@ -109,241 +109,6 @@ ENDPROC(ret_from_fork)
#undef CALL
#define CALL(x) .long x
#ifdef CONFIG_FUNCTION_TRACER
/*
* When compiling with -pg, gcc inserts a call to the mcount routine at the
* start of every function. In mcount, apart from the function's address (in
* lr), we need to get hold of the function's caller's address.
*
* Older GCCs (pre-4.4) inserted a call to a routine called mcount like this:
*
* bl mcount
*
* These versions have the limitation that in order for the mcount routine to
* be able to determine the function's caller's address, an APCS-style frame
* pointer (which is set up with something like the code below) is required.
*
* mov ip, sp
* push {fp, ip, lr, pc}
* sub fp, ip, #4
*
* With EABI, these frame pointers are not available unless -mapcs-frame is
* specified, and if building as Thumb-2, not even then.
*
* Newer GCCs (4.4+) solve this problem by introducing a new version of mcount,
* with call sites like:
*
* push {lr}
* bl __gnu_mcount_nc
*
* With these compilers, frame pointers are not necessary.
*
* mcount can be thought of as a function called in the middle of a subroutine
* call. As such, it needs to be transparent for both the caller and the
* callee: the original lr needs to be restored when leaving mcount, and no
* registers should be clobbered. (In the __gnu_mcount_nc implementation, we
* clobber the ip register. This is OK because the ARM calling convention
* allows it to be clobbered in subroutines and doesn't use it to hold
* parameters.)
*
* When using dynamic ftrace, we patch out the mcount call by a "mov r0, r0"
* for the mcount case, and a "pop {lr}" for the __gnu_mcount_nc case (see
* arch/arm/kernel/ftrace.c).
*/
#ifndef CONFIG_OLD_MCOUNT
#if (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 4))
#error Ftrace requires CONFIG_FRAME_POINTER=y with GCC older than 4.4.0.
#endif
#endif
.macro mcount_adjust_addr rd, rn
bic \rd, \rn, #1 @ clear the Thumb bit if present
sub \rd, \rd, #MCOUNT_INSN_SIZE
.endm
.macro __mcount suffix
mcount_enter
ldr r0, =ftrace_trace_function
ldr r2, [r0]
adr r0, .Lftrace_stub
cmp r0, r2
bne 1f
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ldr r1, =ftrace_graph_return
ldr r2, [r1]
cmp r0, r2
bne ftrace_graph_caller\suffix
ldr r1, =ftrace_graph_entry
ldr r2, [r1]
ldr r0, =ftrace_graph_entry_stub
cmp r0, r2
bne ftrace_graph_caller\suffix
#endif
mcount_exit
1: mcount_get_lr r1 @ lr of instrumented func
mcount_adjust_addr r0, lr @ instrumented function
adr lr, BSYM(2f)
mov pc, r2
2: mcount_exit
.endm
.macro __ftrace_caller suffix
mcount_enter
mcount_get_lr r1 @ lr of instrumented func
mcount_adjust_addr r0, lr @ instrumented function
.globl ftrace_call\suffix
ftrace_call\suffix:
bl ftrace_stub
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
.globl ftrace_graph_call\suffix
ftrace_graph_call\suffix:
mov r0, r0
#endif
mcount_exit
.endm
.macro __ftrace_graph_caller
sub r0, fp, #4 @ &lr of instrumented routine (&parent)
#ifdef CONFIG_DYNAMIC_FTRACE
@ called from __ftrace_caller, saved in mcount_enter
ldr r1, [sp, #16] @ instrumented routine (func)
mcount_adjust_addr r1, r1
#else
@ called from __mcount, untouched in lr
mcount_adjust_addr r1, lr @ instrumented routine (func)
#endif
mov r2, fp @ frame pointer
bl prepare_ftrace_return
mcount_exit
.endm
#ifdef CONFIG_OLD_MCOUNT
/*
* mcount
*/
.macro mcount_enter
stmdb sp!, {r0-r3, lr}
.endm
.macro mcount_get_lr reg
ldr \reg, [fp, #-4]
.endm
.macro mcount_exit
ldr lr, [fp, #-4]
ldmia sp!, {r0-r3, pc}
.endm
ENTRY(mcount)
#ifdef CONFIG_DYNAMIC_FTRACE
stmdb sp!, {lr}
ldr lr, [fp, #-4]
ldmia sp!, {pc}
#else
__mcount _old
#endif
ENDPROC(mcount)
#ifdef CONFIG_DYNAMIC_FTRACE
ENTRY(ftrace_caller_old)
__ftrace_caller _old
ENDPROC(ftrace_caller_old)
#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ENTRY(ftrace_graph_caller_old)
__ftrace_graph_caller
ENDPROC(ftrace_graph_caller_old)
#endif
.purgem mcount_enter
.purgem mcount_get_lr
.purgem mcount_exit
#endif
/*
* __gnu_mcount_nc
*/
.macro mcount_enter
/*
* This pad compensates for the push {lr} at the call site. Note that we are
* unable to unwind through a function which does not otherwise save its lr.
*/
UNWIND(.pad #4)
stmdb sp!, {r0-r3, lr}
UNWIND(.save {r0-r3, lr})
.endm
.macro mcount_get_lr reg
ldr \reg, [sp, #20]
.endm
.macro mcount_exit
ldmia sp!, {r0-r3, ip, lr}
ret ip
.endm
ENTRY(__gnu_mcount_nc)
UNWIND(.fnstart)
#ifdef CONFIG_DYNAMIC_FTRACE
mov ip, lr
ldmia sp!, {lr}
ret ip
#else
__mcount
#endif
UNWIND(.fnend)
ENDPROC(__gnu_mcount_nc)
#ifdef CONFIG_DYNAMIC_FTRACE
ENTRY(ftrace_caller)
UNWIND(.fnstart)
__ftrace_caller
UNWIND(.fnend)
ENDPROC(ftrace_caller)
#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ENTRY(ftrace_graph_caller)
UNWIND(.fnstart)
__ftrace_graph_caller
UNWIND(.fnend)
ENDPROC(ftrace_graph_caller)
#endif
.purgem mcount_enter
.purgem mcount_get_lr
.purgem mcount_exit
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
.globl return_to_handler
return_to_handler:
stmdb sp!, {r0-r3}
mov r0, fp @ frame pointer
bl ftrace_return_to_handler
mov lr, r0 @ r0 has real ret addr
ldmia sp!, {r0-r3}
ret lr
#endif
ENTRY(ftrace_stub)
.Lftrace_stub:
ret lr
ENDPROC(ftrace_stub)
#endif /* CONFIG_FUNCTION_TRACER */
/*=============================================================================
* SWI handler
*-----------------------------------------------------------------------------

243
arch/arm/kernel/entry-ftrace.S Normal file
View File

@ -0,0 +1,243 @@
/*
* 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 <asm/assembler.h>
#include <asm/ftrace.h>
#include <asm/unwind.h>
#include "entry-header.S"
/*
* When compiling with -pg, gcc inserts a call to the mcount routine at the
* start of every function. In mcount, apart from the function's address (in
* lr), we need to get hold of the function's caller's address.
*
* Older GCCs (pre-4.4) inserted a call to a routine called mcount like this:
*
* bl mcount
*
* These versions have the limitation that in order for the mcount routine to
* be able to determine the function's caller's address, an APCS-style frame
* pointer (which is set up with something like the code below) is required.
*
* mov ip, sp
* push {fp, ip, lr, pc}
* sub fp, ip, #4
*
* With EABI, these frame pointers are not available unless -mapcs-frame is
* specified, and if building as Thumb-2, not even then.
*
* Newer GCCs (4.4+) solve this problem by introducing a new version of mcount,
* with call sites like:
*
* push {lr}
* bl __gnu_mcount_nc
*
* With these compilers, frame pointers are not necessary.
*
* mcount can be thought of as a function called in the middle of a subroutine
* call. As such, it needs to be transparent for both the caller and the
* callee: the original lr needs to be restored when leaving mcount, and no
* registers should be clobbered. (In the __gnu_mcount_nc implementation, we
* clobber the ip register. This is OK because the ARM calling convention
* allows it to be clobbered in subroutines and doesn't use it to hold
* parameters.)
*
* When using dynamic ftrace, we patch out the mcount call by a "mov r0, r0"
* for the mcount case, and a "pop {lr}" for the __gnu_mcount_nc case (see
* arch/arm/kernel/ftrace.c).
*/
#ifndef CONFIG_OLD_MCOUNT
#if (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 4))
#error Ftrace requires CONFIG_FRAME_POINTER=y with GCC older than 4.4.0.
#endif
#endif
.macro mcount_adjust_addr rd, rn
bic \rd, \rn, #1 @ clear the Thumb bit if present
sub \rd, \rd, #MCOUNT_INSN_SIZE
.endm
.macro __mcount suffix
mcount_enter
ldr r0, =ftrace_trace_function
ldr r2, [r0]
adr r0, .Lftrace_stub
cmp r0, r2
bne 1f
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ldr r1, =ftrace_graph_return
ldr r2, [r1]
cmp r0, r2
bne ftrace_graph_caller\suffix
ldr r1, =ftrace_graph_entry
ldr r2, [r1]
ldr r0, =ftrace_graph_entry_stub
cmp r0, r2
bne ftrace_graph_caller\suffix
#endif
mcount_exit
1: mcount_get_lr r1 @ lr of instrumented func
mcount_adjust_addr r0, lr @ instrumented function
adr lr, BSYM(2f)
mov pc, r2
2: mcount_exit
.endm
.macro __ftrace_caller suffix
mcount_enter
mcount_get_lr r1 @ lr of instrumented func
mcount_adjust_addr r0, lr @ instrumented function
.globl ftrace_call\suffix
ftrace_call\suffix:
bl ftrace_stub
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
.globl ftrace_graph_call\suffix
ftrace_graph_call\suffix:
mov r0, r0
#endif
mcount_exit
.endm
.macro __ftrace_graph_caller
sub r0, fp, #4 @ &lr of instrumented routine (&parent)
#ifdef CONFIG_DYNAMIC_FTRACE
@ called from __ftrace_caller, saved in mcount_enter
ldr r1, [sp, #16] @ instrumented routine (func)
mcount_adjust_addr r1, r1
#else
@ called from __mcount, untouched in lr
mcount_adjust_addr r1, lr @ instrumented routine (func)
#endif
mov r2, fp @ frame pointer
bl prepare_ftrace_return
mcount_exit
.endm
#ifdef CONFIG_OLD_MCOUNT
/*
* mcount
*/
.macro mcount_enter
stmdb sp!, {r0-r3, lr}
.endm
.macro mcount_get_lr reg
ldr \reg, [fp, #-4]
.endm
.macro mcount_exit
ldr lr, [fp, #-4]
ldmia sp!, {r0-r3, pc}
.endm
ENTRY(mcount)
#ifdef CONFIG_DYNAMIC_FTRACE
stmdb sp!, {lr}
ldr lr, [fp, #-4]
ldmia sp!, {pc}
#else
__mcount _old
#endif
ENDPROC(mcount)
#ifdef CONFIG_DYNAMIC_FTRACE
ENTRY(ftrace_caller_old)
__ftrace_caller _old
ENDPROC(ftrace_caller_old)
#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ENTRY(ftrace_graph_caller_old)
__ftrace_graph_caller
ENDPROC(ftrace_graph_caller_old)
#endif
.purgem mcount_enter
.purgem mcount_get_lr
.purgem mcount_exit
#endif
/*
* __gnu_mcount_nc
*/
.macro mcount_enter
/*
* This pad compensates for the push {lr} at the call site. Note that we are
* unable to unwind through a function which does not otherwise save its lr.
*/
UNWIND(.pad #4)
stmdb sp!, {r0-r3, lr}
UNWIND(.save {r0-r3, lr})
.endm
.macro mcount_get_lr reg
ldr \reg, [sp, #20]
.endm
.macro mcount_exit
ldmia sp!, {r0-r3, ip, lr}
ret ip
.endm
ENTRY(__gnu_mcount_nc)
UNWIND(.fnstart)
#ifdef CONFIG_DYNAMIC_FTRACE
mov ip, lr
ldmia sp!, {lr}
ret ip
#else
__mcount
#endif
UNWIND(.fnend)
ENDPROC(__gnu_mcount_nc)
#ifdef CONFIG_DYNAMIC_FTRACE
ENTRY(ftrace_caller)
UNWIND(.fnstart)
__ftrace_caller
UNWIND(.fnend)
ENDPROC(ftrace_caller)
#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ENTRY(ftrace_graph_caller)
UNWIND(.fnstart)
__ftrace_graph_caller
UNWIND(.fnend)
ENDPROC(ftrace_graph_caller)
#endif
.purgem mcount_enter
.purgem mcount_get_lr
.purgem mcount_exit
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
.globl return_to_handler
return_to_handler:
stmdb sp!, {r0-r3}
mov r0, fp @ frame pointer
bl ftrace_return_to_handler
mov lr, r0 @ r0 has real ret addr
ldmia sp!, {r0-r3}
ret lr
#endif
ENTRY(ftrace_stub)
.Lftrace_stub:
ret lr
ENDPROC(ftrace_stub)

12
arch/arm/kernel/etm.c
View File

@ -213,7 +213,7 @@ static void etm_dump(void)
int length;
if (!t->etb_regs) {
printk(KERN_INFO "No tracing hardware found\n");
pr_info("No tracing hardware found\n");
return;
}
@ -229,11 +229,11 @@ static void etm_dump(void)
etb_writel(t, first, ETBR_READADDR);
printk(KERN_INFO "Trace buffer contents length: %d\n", length);
printk(KERN_INFO "--- ETB buffer begin ---\n");
pr_info("Trace buffer contents length: %d\n", length);
pr_info("--- ETB buffer begin ---\n");
for (; length; length--)
printk("%08x", cpu_to_be32(etb_readl(t, ETBR_READMEM)));
printk(KERN_INFO "\n--- ETB buffer end ---\n");
pr_info("\n--- ETB buffer end ---\n");
/* deassert the overflow bit */
etb_writel(t, 1, ETBR_CTRL);
@ -633,14 +633,14 @@ static int __init etm_init(void)
retval = amba_driver_register(&etb_driver);
if (retval) {
printk(KERN_ERR "Failed to register etb\n");
pr_err("Failed to register etb\n");
return retval;
}
retval = amba_driver_register(&etm_driver);
if (retval) {
amba_driver_unregister(&etb_driver);
printk(KERN_ERR "Failed to probe etm\n");
pr_err("Failed to probe etm\n");
return retval;
}

2
arch/arm/kernel/fiq.c
View File

@ -124,7 +124,7 @@ int claim_fiq(struct fiq_handler *f)
void release_fiq(struct fiq_handler *f)
{
if (current_fiq != f) {
printk(KERN_ERR "%s FIQ trying to release %s FIQ\n",
pr_err("%s FIQ trying to release %s FIQ\n",
f->name, current_fiq->name);
dump_stack();
return;

5
arch/arm/kernel/io.c
View File

@ -51,6 +51,7 @@ void _memcpy_fromio(void *to, const volatile void __iomem *from, size_t count)
from++;
}
}
EXPORT_SYMBOL(_memcpy_fromio);
/*
* Copy data from "real" memory space to IO memory space.
@ -66,6 +67,7 @@ void _memcpy_toio(volatile void __iomem *to, const void *from, size_t count)
to++;
}
}
EXPORT_SYMBOL(_memcpy_toio);
/*
* "memset" on IO memory space.
@ -79,7 +81,4 @@ void _memset_io(volatile void __iomem *dst, int c, size_t count)
dst++;
}
}
EXPORT_SYMBOL(_memcpy_fromio);
EXPORT_SYMBOL(_memcpy_toio);
EXPORT_SYMBOL(_memset_io);

8
arch/arm/kernel/irq.c
View File

@ -31,6 +31,7 @@
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/seq_file.h>
#include <linux/ratelimit.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/kallsyms.h>
@ -82,7 +83,7 @@ void set_irq_flags(unsigned int irq, unsigned int iflags)
unsigned long clr = 0, set = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
if (irq >= nr_irqs) {
printk(KERN_ERR "Trying to set irq flags for IRQ%d\n", irq);
pr_err("Trying to set irq flags for IRQ%d\n", irq);
return;
}
@ -135,7 +136,6 @@ int __init arch_probe_nr_irqs(void)
#endif
#ifdef CONFIG_HOTPLUG_CPU
static bool migrate_one_irq(struct irq_desc *desc)
{
struct irq_data *d = irq_desc_get_irq_data(desc);
@ -187,8 +187,8 @@ void migrate_irqs(void)
affinity_broken = migrate_one_irq(desc);
raw_spin_unlock(&desc->lock);
if (affinity_broken && printk_ratelimit())
pr_warn("IRQ%u no longer affine to CPU%u\n",
if (affinity_broken)
pr_warn_ratelimited("IRQ%u no longer affine to CPU%u\n",
i, smp_processor_id());
}

13
arch/arm/kernel/iwmmxt.S
View File

@ -58,6 +58,7 @@
#define MMX_SIZE (0x98)
.text
.arm
/*
* Lazy switching of Concan coprocessor context
@ -182,6 +183,8 @@ concan_load:
tmcr wCon, r2
ret lr
ENDPROC(iwmmxt_task_enable)
/*
* Back up Concan regs to save area and disable access to them
* (mainly for gdb or sleep mode usage)
@ -232,6 +235,8 @@ ENTRY(iwmmxt_task_disable)
1: msr cpsr_c, ip @ restore interrupt mode
ldmfd sp!, {r4, pc}
ENDPROC(iwmmxt_task_disable)
/*
* Copy Concan state to given memory address
*
@ -268,6 +273,8 @@ ENTRY(iwmmxt_task_copy)
msr cpsr_c, ip @ restore interrupt mode
ret r3
ENDPROC(iwmmxt_task_copy)
/*
* Restore Concan state from given memory address
*
@ -304,6 +311,8 @@ ENTRY(iwmmxt_task_restore)
msr cpsr_c, ip @ restore interrupt mode
ret r3
ENDPROC(iwmmxt_task_restore)
/*
* Concan handling on task switch
*
@ -335,6 +344,8 @@ ENTRY(iwmmxt_task_switch)
mrc p15, 0, r1, c2, c0, 0
sub pc, lr, r1, lsr #32 @ cpwait and return
ENDPROC(iwmmxt_task_switch)
/*
* Remove Concan ownership of given task
*
@ -353,6 +364,8 @@ ENTRY(iwmmxt_task_release)
msr cpsr_c, r2 @ restore interrupts
ret lr
ENDPROC(iwmmxt_task_release)
.data
concan_owner:
.word 0

6
arch/arm/kernel/machine_kexec.c
View File

@ -126,12 +126,12 @@ void machine_crash_shutdown(struct pt_regs *regs)
msecs--;
}
if (atomic_read(&waiting_for_crash_ipi) > 0)
printk(KERN_WARNING "Non-crashing CPUs did not react to IPI\n");
pr_warn("Non-crashing CPUs did not react to IPI\n");
crash_save_cpu(regs, smp_processor_id());
machine_kexec_mask_interrupts();
printk(KERN_INFO "Loading crashdump kernel...\n");
pr_info("Loading crashdump kernel...\n");
}
/*
@ -177,7 +177,7 @@ void machine_kexec(struct kimage *image)
reboot_entry_phys = (unsigned long)reboot_entry +
(reboot_code_buffer_phys - (unsigned long)reboot_code_buffer);
printk(KERN_INFO "Bye!\n");
pr_info("Bye!\n");
if (kexec_reinit)
kexec_reinit();

2
arch/arm/kernel/module.c
View File

@ -251,7 +251,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
#endif
default:
printk(KERN_ERR "%s: unknown relocation: %u\n",
pr_err("%s: unknown relocation: %u\n",
module->name, ELF32_R_TYPE(rel->r_info));
return -ENOEXEC;
}

4
arch/arm/kernel/process.c
View File

@ -51,8 +51,8 @@ EXPORT_SYMBOL(__stack_chk_guard);
static const char *processor_modes[] __maybe_unused = {
"USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" , "UK4_26" , "UK5_26" , "UK6_26" , "UK7_26" ,
"UK8_26" , "UK9_26" , "UK10_26", "UK11_26", "UK12_26", "UK13_26", "UK14_26", "UK15_26",
"USER_32", "FIQ_32" , "IRQ_32" , "SVC_32" , "UK4_32" , "UK5_32" , "UK6_32" , "ABT_32" ,
"UK8_32" , "UK9_32" , "UK10_32", "UND_32" , "UK12_32", "UK13_32", "UK14_32", "SYS_32"
"USER_32", "FIQ_32" , "IRQ_32" , "SVC_32" , "UK4_32" , "UK5_32" , "MON_32" , "ABT_32" ,
"UK8_32" , "UK9_32" , "HYP_32", "UND_32" , "UK12_32", "UK13_32", "UK14_32", "SYS_32"
};
static const char *isa_modes[] __maybe_unused = {

3
arch/arm/kernel/return_address.c
View File

@ -39,13 +39,12 @@ void *return_address(unsigned int level)
{
struct return_address_data data;
struct stackframe frame;
register unsigned long current_sp asm ("sp");
data.level = level + 2;
data.addr = NULL;
frame.fp = (unsigned long)__builtin_frame_address(0);
frame.sp = current_sp;
frame.sp = current_stack_pointer;
frame.lr = (unsigned long)__builtin_return_address(0);
frame.pc = (unsigned long)return_address;

1
arch/arm/kernel/setup.c
View File

@ -900,6 +900,7 @@ void __init setup_arch(char **cmdline_p)
mdesc = setup_machine_tags(__atags_pointer, __machine_arch_type);
machine_desc = mdesc;
machine_name = mdesc->name;
dump_stack_set_arch_desc("%s", mdesc->name);
if (mdesc->reboot_mode != REBOOT_HARD)
reboot_mode = mdesc->reboot_mode;

1
arch/arm/kernel/signal.c
View File

@ -592,7 +592,6 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
}
syscall = 0;
} else if (thread_flags & _TIF_UPROBE) {
clear_thread_flag(TIF_UPROBE);
uprobe_notify_resume(regs);
} else {
clear_thread_flag(TIF_NOTIFY_RESUME);

15
arch/arm/kernel/smp.c
View File

@ -225,7 +225,7 @@ void __cpu_die(unsigned int cpu)
pr_err("CPU%u: cpu didn't die\n", cpu);
return;
}
printk(KERN_NOTICE "CPU%u: shutdown\n", cpu);
pr_notice("CPU%u: shutdown\n", cpu);
/*
* platform_cpu_kill() is generally expected to do the powering off
@ -235,7 +235,7 @@ void __cpu_die(unsigned int cpu)
* the requesting CPU and the dying CPU actually losing power.
*/
if (!platform_cpu_kill(cpu))
printk("CPU%u: unable to kill\n", cpu);
pr_err("CPU%u: unable to kill\n", cpu);
}
/*
@ -351,7 +351,7 @@ asmlinkage void secondary_start_kernel(void)
cpu_init();
printk("CPU%u: Booted secondary processor\n", cpu);
pr_debug("CPU%u: Booted secondary processor\n", cpu);
preempt_disable();
trace_hardirqs_off();
@ -387,9 +387,6 @@ asmlinkage void secondary_start_kernel(void)
void __init smp_cpus_done(unsigned int max_cpus)
{
printk(KERN_INFO "SMP: Total of %d processors activated.\n",
num_online_cpus());
hyp_mode_check();
}
@ -521,7 +518,7 @@ static void ipi_cpu_stop(unsigned int cpu)
if (system_state == SYSTEM_BOOTING ||
system_state == SYSTEM_RUNNING) {
raw_spin_lock(&stop_lock);
printk(KERN_CRIT "CPU%u: stopping\n", cpu);
pr_crit("CPU%u: stopping\n", cpu);
dump_stack();
raw_spin_unlock(&stop_lock);
}
@ -615,8 +612,8 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
break;
default:
printk(KERN_CRIT "CPU%u: Unknown IPI message 0x%x\n",
cpu, ipinr);
pr_crit("CPU%u: Unknown IPI message 0x%x\n",
cpu, ipinr);
break;
}

4
arch/arm/kernel/smp_twd.c
View File

@ -199,7 +199,7 @@ static void twd_calibrate_rate(void)
* the timer ticks
*/
if (twd_timer_rate == 0) {
printk(KERN_INFO "Calibrating local timer... ");
pr_info("Calibrating local timer... ");
/* Wait for a tick to start */
waitjiffies = get_jiffies_64() + 1;
@ -223,7 +223,7 @@ static void twd_calibrate_rate(void)
twd_timer_rate = (0xFFFFFFFFU - count) * (HZ / 5);
printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
pr_cont("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
(twd_timer_rate / 10000) % 100);
}
}

4
arch/arm/kernel/stacktrace.c
View File

@ -134,12 +134,10 @@ static noinline void __save_stack_trace(struct task_struct *tsk,
frame.pc = thread_saved_pc(tsk);
#endif
} else {
register unsigned long current_sp asm ("sp");
/* We don't want this function nor the caller */
data.skip += 2;
frame.fp = (unsigned long)__builtin_frame_address(0);
frame.sp = current_sp;
frame.sp = current_stack_pointer;
frame.lr = (unsigned long)__builtin_return_address(0);
frame.pc = (unsigned long)__save_stack_trace;
}

2
arch/arm/kernel/swp_emulate.c
View File

@ -260,7 +260,7 @@ static int __init swp_emulation_init(void)
return -ENOMEM;
#endif /* CONFIG_PROC_FS */
printk(KERN_NOTICE "Registering SWP/SWPB emulation handler\n");
pr_notice("Registering SWP/SWPB emulation handler\n");
register_undef_hook(&swp_hook);
return 0;

2
arch/arm/kernel/thumbee.c
View File

@ -72,7 +72,7 @@ static int __init thumbee_init(void)
if ((pfr0 & 0x0000f000) != 0x00001000)
return 0;
printk(KERN_INFO "ThumbEE CPU extension supported.\n");
pr_info("ThumbEE CPU extension supported.\n");
elf_hwcap |= HWCAP_THUMBEE;
thread_register_notifier(&thumbee_notifier_block);

4
arch/arm/kernel/topology.c
View File

@ -165,7 +165,7 @@ static void update_cpu_capacity(unsigned int cpu)
set_capacity_scale(cpu, cpu_capacity(cpu) / middle_capacity);
printk(KERN_INFO "CPU%u: update cpu_capacity %lu\n",
pr_info("CPU%u: update cpu_capacity %lu\n",
cpu, arch_scale_cpu_capacity(NULL, cpu));
}
@ -269,7 +269,7 @@ void store_cpu_topology(unsigned int cpuid)
update_cpu_capacity(cpuid);
printk(KERN_INFO "CPU%u: thread %d, cpu %d, socket %d, mpidr %x\n",
pr_info("CPU%u: thread %d, cpu %d, socket %d, mpidr %x\n",
cpuid, cpu_topology[cpuid].thread_id,
cpu_topology[cpuid].core_id,
cpu_topology[cpuid].socket_id, mpidr);

42
arch/arm/kernel/traps.c
View File

@ -198,14 +198,14 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
}
if (!fp) {
printk("no frame pointer");
pr_cont("no frame pointer");
ok = 0;
} else if (verify_stack(fp)) {
printk("invalid frame pointer 0x%08x", fp);
pr_cont("invalid frame pointer 0x%08x", fp);
ok = 0;
} else if (fp < (unsigned long)end_of_stack(tsk))
printk("frame pointer underflow");
printk("\n");
pr_cont("frame pointer underflow");
pr_cont("\n");
if (ok)
c_backtrace(fp, mode);
@ -240,8 +240,8 @@ static int __die(const char *str, int err, struct pt_regs *regs)
static int die_counter;
int ret;
printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP
S_ISA "\n", str, err, ++die_counter);
pr_emerg("Internal error: %s: %x [#%d]" S_PREEMPT S_SMP S_ISA "\n",
str, err, ++die_counter);
/* trap and error numbers are mostly meaningless on ARM */
ret = notify_die(DIE_OOPS, str, regs, err, tsk->thread.trap_no, SIGSEGV);
@ -250,8 +250,8 @@ static int __die(const char *str, int err, struct pt_regs *regs)
print_modules();
__show_regs(regs);
printk(KERN_EMERG "Process %.*s (pid: %d, stack limit = 0x%p)\n",
TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), end_of_stack(tsk));
pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n",
TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), end_of_stack(tsk));
if (!user_mode(regs) || in_interrupt()) {
dump_mem(KERN_EMERG, "Stack: ", regs->ARM_sp,
@ -446,7 +446,7 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
die_sig:
#ifdef CONFIG_DEBUG_USER
if (user_debug & UDBG_UNDEFINED) {
printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n",
pr_info("%s (%d): undefined instruction: pc=%p\n",
current->comm, task_pid_nr(current), pc);
__show_regs(regs);
dump_instr(KERN_INFO, regs);
@ -496,7 +496,7 @@ asmlinkage void bad_mode(struct pt_regs *regs, int reason)
{
console_verbose();
printk(KERN_CRIT "Bad mode in %s handler detected\n", handler[reason]);
pr_crit("Bad mode in %s handler detected\n", handler[reason]);
die("Oops - bad mode", regs, 0);
local_irq_disable();
@ -516,7 +516,7 @@ static int bad_syscall(int n, struct pt_regs *regs)
#ifdef CONFIG_DEBUG_USER
if (user_debug & UDBG_SYSCALL) {
printk(KERN_ERR "[%d] %s: obsolete system call %08x.\n",
pr_err("[%d] %s: obsolete system call %08x.\n",
task_pid_nr(current), current->comm, n);
dump_instr(KERN_ERR, regs);
}
@ -694,7 +694,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
* something catastrophic has happened
*/
if (user_debug & UDBG_SYSCALL) {
printk("[%d] %s: arm syscall %d\n",
pr_err("[%d] %s: arm syscall %d\n",
task_pid_nr(current), current->comm, no);
dump_instr("", regs);
if (user_mode(regs)) {
@ -753,8 +753,8 @@ late_initcall(arm_mrc_hook_init);
void __bad_xchg(volatile void *ptr, int size)
{
printk("xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n",
__builtin_return_address(0), ptr, size);
pr_err("xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n",
__builtin_return_address(0), ptr, size);
BUG();
}
EXPORT_SYMBOL(__bad_xchg);
@ -771,8 +771,8 @@ baddataabort(int code, unsigned long instr, struct pt_regs *regs)
#ifdef CONFIG_DEBUG_USER
if (user_debug & UDBG_BADABORT) {
printk(KERN_ERR "[%d] %s: bad data abort: code %d instr 0x%08lx\n",
task_pid_nr(current), current->comm, code, instr);
pr_err("[%d] %s: bad data abort: code %d instr 0x%08lx\n",
task_pid_nr(current), current->comm, code, instr);
dump_instr(KERN_ERR, regs);
show_pte(current->mm, addr);
}
@ -788,29 +788,29 @@ baddataabort(int code, unsigned long instr, struct pt_regs *regs)
void __readwrite_bug(const char *fn)
{
printk("%s called, but not implemented\n", fn);
pr_err("%s called, but not implemented\n", fn);
BUG();
}
EXPORT_SYMBOL(__readwrite_bug);
void __pte_error(const char *file, int line, pte_t pte)
{
printk("%s:%d: bad pte %08llx.\n", file, line, (long long)pte_val(pte));
pr_err("%s:%d: bad pte %08llx.\n", file, line, (long long)pte_val(pte));
}
void __pmd_error(const char *file, int line, pmd_t pmd)
{
printk("%s:%d: bad pmd %08llx.\n", file, line, (long long)pmd_val(pmd));
pr_err("%s:%d: bad pmd %08llx.\n", file, line, (long long)pmd_val(pmd));
}
void __pgd_error(const char *file, int line, pgd_t pgd)
{
printk("%s:%d: bad pgd %08llx.\n", file, line, (long long)pgd_val(pgd));
pr_err("%s:%d: bad pgd %08llx.\n", file, line, (long long)pgd_val(pgd));
}
asmlinkage void __div0(void)
{
printk("Division by zero in kernel.\n");
pr_err("Division by zero in kernel.\n");
dump_stack();
}
EXPORT_SYMBOL(__div0);

3
arch/arm/kernel/unwind.c
View File

@ -471,7 +471,6 @@ int unwind_frame(struct stackframe *frame)
void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk)
{
struct stackframe frame;
register unsigned long current_sp asm ("sp");
pr_debug("%s(regs = %p tsk = %p)\n", __func__, regs, tsk);
@ -485,7 +484,7 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk)
frame.pc = regs->ARM_lr;
} else if (tsk == current) {
frame.fp = (unsigned long)__builtin_frame_address(0);
frame.sp = current_sp;
frame.sp = current_stack_pointer;
frame.lr = (unsigned long)__builtin_return_address(0);
frame.pc = (unsigned long)unwind_backtrace;
} else {

7
arch/arm/kernel/xscale-cp0.c
View File

@ -157,15 +157,14 @@ static int __init xscale_cp0_init(void)
if (cpu_has_iwmmxt()) {
#ifndef CONFIG_IWMMXT
printk(KERN_WARNING "CAUTION: XScale iWMMXt coprocessor "
"detected, but kernel support is missing.\n");
pr_warn("CAUTION: XScale iWMMXt coprocessor detected, but kernel support is missing.\n");
#else
printk(KERN_INFO "XScale iWMMXt coprocessor detected.\n");
pr_info("XScale iWMMXt coprocessor detected.\n");
elf_hwcap |= HWCAP_IWMMXT;
thread_register_notifier(&iwmmxt_notifier_block);
#endif
} else {
printk(KERN_INFO "XScale DSP coprocessor detected.\n");
pr_info("XScale DSP coprocessor detected.\n");
thread_register_notifier(&dsp_notifier_block);
cp_access |= 1;
}

5
arch/arm/lib/copy_from_user.S
View File

@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/unwind.h>
/*
* Prototype:
@ -77,6 +78,10 @@
stmdb sp!, {r0, r2, r3, \reg1, \reg2}
.endm
.macro usave reg1 reg2
UNWIND( .save {r0, r2, r3, \reg1, \reg2} )
.endm
.macro exit reg1 reg2
add sp, sp, #8
ldmfd sp!, {r0, \reg1, \reg2}

30
arch/arm/lib/copy_template.S
View File

@ -53,6 +53,12 @@
* data as needed by the implementation including this code. Called
* upon code entry.
*
* usave reg1 reg2
*
* Unwind annotation macro is corresponding for 'enter' macro.
* It tell unwinder that preserved some provided registers on the stack
* and additional data by a prior 'enter' macro.
*
* exit reg1 reg2
*
* Restore registers with the values previously saved with the
@ -67,7 +73,12 @@
*/
UNWIND( .fnstart )
enter r4, lr
UNWIND( .fnend )
UNWIND( .fnstart )
usave r4, lr @ in first stmdb block
subs r2, r2, #4
blt 8f
@ -79,6 +90,11 @@
1: subs r2, r2, #(28)
stmfd sp!, {r5 - r8}
UNWIND( .fnend )
UNWIND( .fnstart )
usave r4, lr
UNWIND( .save {r5 - r8} ) @ in second stmfd block
blt 5f
CALGN( ands ip, r0, #31 )
@ -144,7 +160,10 @@
CALGN( bcs 2b )
7: ldmfd sp!, {r5 - r8}
UNWIND( .fnend ) @ end of second stmfd block
UNWIND( .fnstart )
usave r4, lr @ still in first stmdb block
8: movs r2, r2, lsl #31
ldr1b r1, r3, ne, abort=21f
ldr1b r1, r4, cs, abort=21f
@ -173,10 +192,13 @@
ldr1w r1, lr, abort=21f
beq 17f
bgt 18f
UNWIND( .fnend )
.macro forward_copy_shift pull push
UNWIND( .fnstart )
usave r4, lr @ still in first stmdb block
subs r2, r2, #28
blt 14f
@ -187,7 +209,11 @@
CALGN( bcc 15f )
11: stmfd sp!, {r5 - r9}
UNWIND( .fnend )
UNWIND( .fnstart )
usave r4, lr
UNWIND( .save {r5 - r9} ) @ in new second stmfd block
PLD( pld [r1, #0] )
PLD( subs r2, r2, #96 )
PLD( pld [r1, #28] )
@ -221,7 +247,10 @@
PLD( bge 13b )
ldmfd sp!, {r5 - r9}
UNWIND( .fnend ) @ end of the second stmfd block
UNWIND( .fnstart )
usave r4, lr @ still in first stmdb block
14: ands ip, r2, #28
beq 16f
@ -236,6 +265,7 @@
16: sub r1, r1, #(\push / 8)
b 8b
UNWIND( .fnend )
.endm

5
arch/arm/lib/copy_to_user.S
View File

@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/unwind.h>
/*
* Prototype:
@ -80,6 +81,10 @@
stmdb sp!, {r0, r2, r3, \reg1, \reg2}
.endm
.macro usave reg1 reg2
UNWIND( .save {r0, r2, r3, \reg1, \reg2} )
.endm
.macro exit reg1 reg2
add sp, sp, #8
ldmfd sp!, {r0, \reg1, \reg2}

5
arch/arm/lib/memcpy.S
View File

@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/unwind.h>
#define LDR1W_SHIFT 0
#define STR1W_SHIFT 0
@ -48,6 +49,10 @@
stmdb sp!, {r0, \reg1, \reg2}
.endm
.macro usave reg1 reg2
UNWIND( .save {r0, \reg1, \reg2} )
.endm
.macro exit reg1 reg2
ldmfd sp!, {r0, \reg1, \reg2}
.endm

28
arch/arm/lib/memmove.S
View File

@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/unwind.h>
.text
@ -27,12 +28,17 @@
*/
ENTRY(memmove)
UNWIND( .fnstart )
subs ip, r0, r1
cmphi r2, ip
bls memcpy
stmfd sp!, {r0, r4, lr}
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {r0, r4, lr} ) @ in first stmfd block
add r1, r1, r2
add r0, r0, r2
subs r2, r2, #4
@ -45,6 +51,11 @@ ENTRY(memmove)
1: subs r2, r2, #(28)
stmfd sp!, {r5 - r8}
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {r0, r4, lr} )
UNWIND( .save {r5 - r8} ) @ in second stmfd block
blt 5f
CALGN( ands ip, r0, #31 )
@ -97,6 +108,10 @@ ENTRY(memmove)
CALGN( bcs 2b )
7: ldmfd sp!, {r5 - r8}
UNWIND( .fnend ) @ end of second stmfd block
UNWIND( .fnstart )
UNWIND( .save {r0, r4, lr} ) @ still in first stmfd block
8: movs r2, r2, lsl #31
ldrneb r3, [r1, #-1]!
@ -124,10 +139,13 @@ ENTRY(memmove)
ldr r3, [r1, #0]
beq 17f
blt 18f
UNWIND( .fnend )
.macro backward_copy_shift push pull
UNWIND( .fnstart )
UNWIND( .save {r0, r4, lr} ) @ still in first stmfd block
subs r2, r2, #28
blt 14f
@ -137,6 +155,11 @@ ENTRY(memmove)
CALGN( bcc 15f )
11: stmfd sp!, {r5 - r9}
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {r0, r4, lr} )
UNWIND( .save {r5 - r9} ) @ in new second stmfd block
PLD( pld [r1, #-4] )
PLD( subs r2, r2, #96 )
@ -171,6 +194,10 @@ ENTRY(memmove)
PLD( bge 13b )
ldmfd sp!, {r5 - r9}
UNWIND( .fnend ) @ end of the second stmfd block
UNWIND( .fnstart )
UNWIND( .save {r0, r4, lr} ) @ still in first stmfd block
14: ands ip, r2, #28
beq 16f
@ -186,6 +213,7 @@ ENTRY(memmove)
16: add r1, r1, #(\pull / 8)
b 8b
UNWIND( .fnend )
.endm

12
arch/arm/lib/memset.S
View File

@ -11,11 +11,13 @@
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/unwind.h>
.text
.align 5
ENTRY(memset)
UNWIND( .fnstart )
ands r3, r0, #3 @ 1 unaligned?
mov ip, r0 @ preserve r0 as return value
bne 6f @ 1
@ -34,6 +36,9 @@ ENTRY(memset)
* We need 2 extra registers for this loop - use r8 and the LR
*/
stmfd sp!, {r8, lr}
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {r8, lr} )
mov r8, r1
mov lr, r1
@ -53,6 +58,7 @@ ENTRY(memset)
tst r2, #16
stmneia ip!, {r1, r3, r8, lr}
ldmfd sp!, {r8, lr}
UNWIND( .fnend )
#else
@ -62,6 +68,9 @@ ENTRY(memset)
*/
stmfd sp!, {r4-r8, lr}
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {r4-r8, lr} )
mov r4, r1
mov r5, r1
mov r6, r1
@ -94,9 +103,11 @@ ENTRY(memset)
tst r2, #16
stmneia ip!, {r4-r7}
ldmfd sp!, {r4-r8, lr}
UNWIND( .fnend )
#endif
UNWIND( .fnstart )
4: tst r2, #8
stmneia ip!, {r1, r3}
tst r2, #4
@ -120,4 +131,5 @@ ENTRY(memset)
strb r1, [ip], #1 @ 1
add r2, r2, r3 @ 1 (r2 = r2 - (4 - r3))
b 1b
UNWIND( .fnend )
ENDPROC(memset)

12
arch/arm/lib/memzero.S
View File

@ -9,6 +9,7 @@
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/unwind.h>
.text
.align 5
@ -18,6 +19,7 @@
* mis-aligned by, and r1 is the number of bytes. If r1 < 4, then we
* don't bother; we use byte stores instead.
*/
UNWIND( .fnstart )
1: subs r1, r1, #4 @ 1 do we have enough
blt 5f @ 1 bytes to align with?
cmp r3, #2 @ 1
@ -47,6 +49,9 @@ ENTRY(__memzero)
* use the LR
*/
str lr, [sp, #-4]! @ 1
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {lr} )
mov ip, r2 @ 1
mov lr, r2 @ 1
@ -66,6 +71,7 @@ ENTRY(__memzero)
tst r1, #16 @ 1 16 bytes or more?
stmneia r0!, {r2, r3, ip, lr} @ 4
ldr lr, [sp], #4 @ 1
UNWIND( .fnend )
#else
@ -75,6 +81,9 @@ ENTRY(__memzero)
*/
stmfd sp!, {r4-r7, lr}
UNWIND( .fnend )
UNWIND( .fnstart )
UNWIND( .save {r4-r7, lr} )
mov r4, r2
mov r5, r2
mov r6, r2
@ -105,9 +114,11 @@ ENTRY(__memzero)
tst r1, #16
stmneia r0!, {r4-r7}
ldmfd sp!, {r4-r7, lr}
UNWIND( .fnend )
#endif
UNWIND( .fnstart )
4: tst r1, #8 @ 1 8 bytes or more?
stmneia r0!, {r2, r3} @ 2
tst r1, #4 @ 1 4 bytes or more?
@ -122,4 +133,5 @@ ENTRY(__memzero)
tst r1, #1 @ 1 a byte left over
strneb r2, [r0], #1 @ 1
ret lr @ 1
UNWIND( .fnend )
ENDPROC(__memzero)

43
arch/arm/mach-sa1100/clock.c
View File

@ -15,10 +15,12 @@
#include <linux/clkdev.h>
#include <mach/hardware.h>
#include <mach/generic.h>
struct clkops {
void (*enable)(struct clk *);
void (*disable)(struct clk *);
unsigned long (*get_rate)(struct clk *);
};
struct clk {
@ -33,13 +35,6 @@ struct clk clk_##_name = { \
static DEFINE_SPINLOCK(clocks_lock);
/* Dummy clk routine to build generic kernel parts that may be using them */
unsigned long clk_get_rate(struct clk *clk)
{
return 0;
}
EXPORT_SYMBOL(clk_get_rate);
static void clk_gpio27_enable(struct clk *clk)
{
/*
@ -58,6 +53,19 @@ static void clk_gpio27_disable(struct clk *clk)
GAFR &= ~GPIO_32_768kHz;
}
static void clk_cpu_enable(struct clk *clk)
{
}
static void clk_cpu_disable(struct clk *clk)
{
}
static unsigned long clk_cpu_get_rate(struct clk *clk)
{
return sa11x0_getspeed(0) * 1000;
}
int clk_enable(struct clk *clk)
{
unsigned long flags;
@ -87,16 +95,37 @@ void clk_disable(struct clk *clk)
}
EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
if (clk && clk->ops && clk->ops->get_rate)
return clk->ops->get_rate(clk);
return 0;
}
EXPORT_SYMBOL(clk_get_rate);
const struct clkops clk_gpio27_ops = {
.enable = clk_gpio27_enable,
.disable = clk_gpio27_disable,
};
const struct clkops clk_cpu_ops = {
.enable = clk_cpu_enable,
.disable = clk_cpu_disable,
.get_rate = clk_cpu_get_rate,
};
static DEFINE_CLK(gpio27, &clk_gpio27_ops);
static DEFINE_CLK(cpu, &clk_cpu_ops);
static struct clk_lookup sa11xx_clkregs[] = {
CLKDEV_INIT("sa1111.0", NULL, &clk_gpio27),
CLKDEV_INIT("sa1100-rtc", NULL, NULL),
CLKDEV_INIT("sa11x0-fb", NULL, &clk_cpu),
CLKDEV_INIT("sa11x0-pcmcia", NULL, &clk_cpu),
/* sa1111 names devices using internal offsets, PCMCIA is at 0x1800 */
CLKDEV_INIT("1800", NULL, &clk_cpu),
};
static int __init sa11xx_clk_init(void)

55
arch/arm/mach-sa1100/collie.c
View File

@ -30,7 +30,7 @@
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/gpio.h>
#include <linux/pda_power.h>
#include <linux/power/gpio-charger.h>
#include <video/sa1100fb.h>
@ -131,62 +131,24 @@ static struct irda_platform_data collie_ir_data = {
/*
* Collie AC IN
*/
static int collie_power_init(struct device *dev)
{
int ret = gpio_request(COLLIE_GPIO_AC_IN, "ac in");
if (ret)
goto err_gpio_req;
ret = gpio_direction_input(COLLIE_GPIO_AC_IN);
if (ret)
goto err_gpio_in;
return 0;
err_gpio_in:
gpio_free(COLLIE_GPIO_AC_IN);
err_gpio_req:
return ret;
}
static void collie_power_exit(struct device *dev)
{
gpio_free(COLLIE_GPIO_AC_IN);
}
static int collie_power_ac_online(void)
{
return gpio_get_value(COLLIE_GPIO_AC_IN) == 2;
}
static char *collie_ac_supplied_to[] = {
"main-battery",
"backup-battery",
};
static struct pda_power_pdata collie_power_data = {
.init = collie_power_init,
.is_ac_online = collie_power_ac_online,
.exit = collie_power_exit,
static struct gpio_charger_platform_data collie_power_data = {
.name = "charger",
.type = POWER_SUPPLY_TYPE_MAINS,
.gpio = COLLIE_GPIO_AC_IN,
.supplied_to = collie_ac_supplied_to,
.num_supplicants = ARRAY_SIZE(collie_ac_supplied_to),
};
static struct resource collie_power_resource[] = {
{
.name = "ac",
.flags = IORESOURCE_IRQ |
IORESOURCE_IRQ_HIGHEDGE |
IORESOURCE_IRQ_LOWEDGE,
},
};
static struct platform_device collie_power_device = {
.name = "pda-power",
.name = "gpio-charger",
.id = -1,
.dev.platform_data = &collie_power_data,
.resource = collie_power_resource,
.num_resources = ARRAY_SIZE(collie_power_resource),
};
#ifdef CONFIG_SHARP_LOCOMO
@ -420,9 +382,6 @@ static void __init collie_init(void)
GPSR |= _COLLIE_GPIO_UCB1x00_RESET;
collie_power_resource[0].start = gpio_to_irq(COLLIE_GPIO_AC_IN);
collie_power_resource[0].end = gpio_to_irq(COLLIE_GPIO_AC_IN);
sa11x0_ppc_configure_mcp();

41
arch/arm/mach-sa1100/include/mach/entry-macro.S
View File

@ -1,41 +0,0 @@
/*
* arch/arm/mach-sa1100/include/mach/entry-macro.S
*
* Low-level IRQ helper macros for SA1100-based platforms
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
.macro get_irqnr_preamble, base, tmp
mov \base, #0xfa000000 @ ICIP = 0xfa050000
add \base, \base, #0x00050000
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \irqstat, [\base] @ get irqs
ldr \irqnr, [\base, #4] @ ICMR = 0xfa050004
ands \irqstat, \irqstat, \irqnr
mov \irqnr, #0
beq 1001f
tst \irqstat, #0xff
moveq \irqstat, \irqstat, lsr #8
addeq \irqnr, \irqnr, #8
tsteq \irqstat, #0xff
moveq \irqstat, \irqstat, lsr #8
addeq \irqnr, \irqnr, #8
tsteq \irqstat, #0xff
moveq \irqstat, \irqstat, lsr #8
addeq \irqnr, \irqnr, #8
tst \irqstat, #0x0f
moveq \irqstat, \irqstat, lsr #4
addeq \irqnr, \irqnr, #4
tst \irqstat, #0x03
moveq \irqstat, \irqstat, lsr #2
addeq \irqnr, \irqnr, #2
tst \irqstat, #0x01
addeqs \irqnr, \irqnr, #1
1001:
.endm

102
arch/arm/mach-sa1100/include/mach/irqs.h
View File

@ -8,56 +8,56 @@
* 2001/11/14 RMK Cleaned up and standardised a lot of the IRQs.
*/
#define IRQ_GPIO0 0
#define IRQ_GPIO1 1
#define IRQ_GPIO2 2
#define IRQ_GPIO3 3
#define IRQ_GPIO4 4
#define IRQ_GPIO5 5
#define IRQ_GPIO6 6
#define IRQ_GPIO7 7
#define IRQ_GPIO8 8
#define IRQ_GPIO9 9
#define IRQ_GPIO10 10
#define IRQ_GPIO11_27 11
#define IRQ_LCD 12 /* LCD controller */
#define IRQ_Ser0UDC 13 /* Ser. port 0 UDC */
#define IRQ_Ser1SDLC 14 /* Ser. port 1 SDLC */
#define IRQ_Ser1UART 15 /* Ser. port 1 UART */
#define IRQ_Ser2ICP 16 /* Ser. port 2 ICP */
#define IRQ_Ser3UART 17 /* Ser. port 3 UART */
#define IRQ_Ser4MCP 18 /* Ser. port 4 MCP */
#define IRQ_Ser4SSP 19 /* Ser. port 4 SSP */
#define IRQ_DMA0 20 /* DMA controller channel 0 */
#define IRQ_DMA1 21 /* DMA controller channel 1 */
#define IRQ_DMA2 22 /* DMA controller channel 2 */
#define IRQ_DMA3 23 /* DMA controller channel 3 */
#define IRQ_DMA4 24 /* DMA controller channel 4 */
#define IRQ_DMA5 25 /* DMA controller channel 5 */
#define IRQ_OST0 26 /* OS Timer match 0 */
#define IRQ_OST1 27 /* OS Timer match 1 */
#define IRQ_OST2 28 /* OS Timer match 2 */
#define IRQ_OST3 29 /* OS Timer match 3 */
#define IRQ_RTC1Hz 30 /* RTC 1 Hz clock */
#define IRQ_RTCAlrm 31 /* RTC Alarm */
#define IRQ_GPIO0 1
#define IRQ_GPIO1 2
#define IRQ_GPIO2 3
#define IRQ_GPIO3 4
#define IRQ_GPIO4 5
#define IRQ_GPIO5 6
#define IRQ_GPIO6 7
#define IRQ_GPIO7 8
#define IRQ_GPIO8 9
#define IRQ_GPIO9 10
#define IRQ_GPIO10 11
#define IRQ_GPIO11_27 12
#define IRQ_LCD 13 /* LCD controller */
#define IRQ_Ser0UDC 14 /* Ser. port 0 UDC */
#define IRQ_Ser1SDLC 15 /* Ser. port 1 SDLC */
#define IRQ_Ser1UART 16 /* Ser. port 1 UART */
#define IRQ_Ser2ICP 17 /* Ser. port 2 ICP */
#define IRQ_Ser3UART 18 /* Ser. port 3 UART */
#define IRQ_Ser4MCP 19 /* Ser. port 4 MCP */
#define IRQ_Ser4SSP 20 /* Ser. port 4 SSP */
#define IRQ_DMA0 21 /* DMA controller channel 0 */
#define IRQ_DMA1 22 /* DMA controller channel 1 */
#define IRQ_DMA2 23 /* DMA controller channel 2 */
#define IRQ_DMA3 24 /* DMA controller channel 3 */
#define IRQ_DMA4 25 /* DMA controller channel 4 */
#define IRQ_DMA5 26 /* DMA controller channel 5 */
#define IRQ_OST0 27 /* OS Timer match 0 */
#define IRQ_OST1 28 /* OS Timer match 1 */
#define IRQ_OST2 29 /* OS Timer match 2 */
#define IRQ_OST3 30 /* OS Timer match 3 */
#define IRQ_RTC1Hz 31 /* RTC 1 Hz clock */
#define IRQ_RTCAlrm 32 /* RTC Alarm */
#define IRQ_GPIO11 32
#define IRQ_GPIO12 33
#define IRQ_GPIO13 34
#define IRQ_GPIO14 35
#define IRQ_GPIO15 36
#define IRQ_GPIO16 37
#define IRQ_GPIO17 38
#define IRQ_GPIO18 39
#define IRQ_GPIO19 40
#define IRQ_GPIO20 41
#define IRQ_GPIO21 42
#define IRQ_GPIO22 43
#define IRQ_GPIO23 44
#define IRQ_GPIO24 45
#define IRQ_GPIO25 46
#define IRQ_GPIO26 47
#define IRQ_GPIO27 48
#define IRQ_GPIO11 33
#define IRQ_GPIO12 34
#define IRQ_GPIO13 35
#define IRQ_GPIO14 36
#define IRQ_GPIO15 37
#define IRQ_GPIO16 38
#define IRQ_GPIO17 39
#define IRQ_GPIO18 40
#define IRQ_GPIO19 41
#define IRQ_GPIO20 42
#define IRQ_GPIO21 43
#define IRQ_GPIO22 44
#define IRQ_GPIO23 45
#define IRQ_GPIO24 46
#define IRQ_GPIO25 47
#define IRQ_GPIO26 48
#define IRQ_GPIO27 49
/*
* The next 16 interrupts are for board specific purposes. Since
@ -65,8 +65,8 @@
* these. If you need more, increase IRQ_BOARD_END, but keep it
* within sensible limits. IRQs 49 to 64 are available.
*/
#define IRQ_BOARD_START 49
#define IRQ_BOARD_END 65
#define IRQ_BOARD_START 50
#define IRQ_BOARD_END 66
/*
* Figure out the MAX IRQ number.

231
arch/arm/mach-sa1100/irq.c
View File

@ -14,16 +14,72 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/ioport.h>
#include <linux/syscore_ops.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/irq.h>
#include <asm/exception.h>
#include "generic.h"
/*
* We don't need to ACK IRQs on the SA1100 unless they're GPIOs
* this is for internal IRQs i.e. from IRQ LCD to RTCAlrm.
*/
static void sa1100_mask_irq(struct irq_data *d)
{
ICMR &= ~BIT(d->hwirq);
}
static void sa1100_unmask_irq(struct irq_data *d)
{
ICMR |= BIT(d->hwirq);
}
/*
* Apart form GPIOs, only the RTC alarm can be a wakeup event.
*/
static int sa1100_set_wake(struct irq_data *d, unsigned int on)
{
if (BIT(d->hwirq) == IC_RTCAlrm) {
if (on)
PWER |= PWER_RTC;
else
PWER &= ~PWER_RTC;
return 0;
}
return -EINVAL;
}
static struct irq_chip sa1100_normal_chip = {
.name = "SC",
.irq_ack = sa1100_mask_irq,
.irq_mask = sa1100_mask_irq,
.irq_unmask = sa1100_unmask_irq,
.irq_set_wake = sa1100_set_wake,
};
static int sa1100_normal_irqdomain_map(struct irq_domain *d,
unsigned int irq, irq_hw_number_t hwirq)
{
irq_set_chip_and_handler(irq, &sa1100_normal_chip,
handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
return 0;
}
static struct irq_domain_ops sa1100_normal_irqdomain_ops = {
.map = sa1100_normal_irqdomain_map,
.xlate = irq_domain_xlate_onetwocell,
};
static struct irq_domain *sa1100_normal_irqdomain;
/*
* SA1100 GPIO edge detection for IRQs:
* IRQs are generated on Falling-Edge, Rising-Edge, or both.
@ -33,20 +89,11 @@ static int GPIO_IRQ_rising_edge;
static int GPIO_IRQ_falling_edge;
static int GPIO_IRQ_mask = (1 << 11) - 1;
/*
* To get the GPIO number from an IRQ number
*/
#define GPIO_11_27_IRQ(i) ((i) - 21)
#define GPIO11_27_MASK(irq) (1 << GPIO_11_27_IRQ(irq))
static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
{
unsigned int mask;
if (d->irq <= 10)
mask = 1 << d->irq;
else
mask = GPIO11_27_MASK(d->irq);
mask = BIT(d->hwirq);
if (type == IRQ_TYPE_PROBE) {
if ((GPIO_IRQ_rising_edge | GPIO_IRQ_falling_edge) & mask)
@ -70,41 +117,51 @@ static int sa1100_gpio_type(struct irq_data *d, unsigned int type)
}
/*
* GPIO IRQs must be acknowledged. This is for IRQs from 0 to 10.
* GPIO IRQs must be acknowledged.
*/
static void sa1100_low_gpio_ack(struct irq_data *d)
static void sa1100_gpio_ack(struct irq_data *d)
{
GEDR = (1 << d->irq);
GEDR = BIT(d->hwirq);
}
static void sa1100_low_gpio_mask(struct irq_data *d)
{
ICMR &= ~(1 << d->irq);
}
static void sa1100_low_gpio_unmask(struct irq_data *d)
{
ICMR |= 1 << d->irq;
}
static int sa1100_low_gpio_wake(struct irq_data *d, unsigned int on)
static int sa1100_gpio_wake(struct irq_data *d, unsigned int on)
{
if (on)
PWER |= 1 << d->irq;
PWER |= BIT(d->hwirq);
else
PWER &= ~(1 << d->irq);
PWER &= ~BIT(d->hwirq);
return 0;
}
/*
* This is for IRQs from 0 to 10.
*/
static struct irq_chip sa1100_low_gpio_chip = {
.name = "GPIO-l",
.irq_ack = sa1100_low_gpio_ack,
.irq_mask = sa1100_low_gpio_mask,
.irq_unmask = sa1100_low_gpio_unmask,
.irq_ack = sa1100_gpio_ack,
.irq_mask = sa1100_mask_irq,
.irq_unmask = sa1100_unmask_irq,
.irq_set_type = sa1100_gpio_type,
.irq_set_wake = sa1100_low_gpio_wake,
.irq_set_wake = sa1100_gpio_wake,
};
static int sa1100_low_gpio_irqdomain_map(struct irq_domain *d,
unsigned int irq, irq_hw_number_t hwirq)
{
irq_set_chip_and_handler(irq, &sa1100_low_gpio_chip,
handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
return 0;
}
static struct irq_domain_ops sa1100_low_gpio_irqdomain_ops = {
.map = sa1100_low_gpio_irqdomain_map,
.xlate = irq_domain_xlate_onetwocell,
};
static struct irq_domain *sa1100_low_gpio_irqdomain;
/*
* IRQ11 (GPIO11 through 27) handler. We enter here with the
* irq_controller_lock held, and IRQs disabled. Decode the IRQ
@ -141,16 +198,9 @@ sa1100_high_gpio_handler(unsigned int irq, struct irq_desc *desc)
* In addition, the IRQs are all collected up into one bit in the
* interrupt controller registers.
*/
static void sa1100_high_gpio_ack(struct irq_data *d)
{
unsigned int mask = GPIO11_27_MASK(d->irq);
GEDR = mask;
}
static void sa1100_high_gpio_mask(struct irq_data *d)
{
unsigned int mask = GPIO11_27_MASK(d->irq);
unsigned int mask = BIT(d->hwirq);
GPIO_IRQ_mask &= ~mask;
@ -160,7 +210,7 @@ static void sa1100_high_gpio_mask(struct irq_data *d)
static void sa1100_high_gpio_unmask(struct irq_data *d)
{
unsigned int mask = GPIO11_27_MASK(d->irq);
unsigned int mask = BIT(d->hwirq);
GPIO_IRQ_mask |= mask;
@ -168,61 +218,32 @@ static void sa1100_high_gpio_unmask(struct irq_data *d)
GFER = GPIO_IRQ_falling_edge & GPIO_IRQ_mask;
}
static int sa1100_high_gpio_wake(struct irq_data *d, unsigned int on)
{
if (on)
PWER |= GPIO11_27_MASK(d->irq);
else
PWER &= ~GPIO11_27_MASK(d->irq);
return 0;
}
static struct irq_chip sa1100_high_gpio_chip = {
.name = "GPIO-h",
.irq_ack = sa1100_high_gpio_ack,
.irq_ack = sa1100_gpio_ack,
.irq_mask = sa1100_high_gpio_mask,
.irq_unmask = sa1100_high_gpio_unmask,
.irq_set_type = sa1100_gpio_type,
.irq_set_wake = sa1100_high_gpio_wake,
.irq_set_wake = sa1100_gpio_wake,
};
/*
* We don't need to ACK IRQs on the SA1100 unless they're GPIOs
* this is for internal IRQs i.e. from 11 to 31.
*/
static void sa1100_mask_irq(struct irq_data *d)
static int sa1100_high_gpio_irqdomain_map(struct irq_domain *d,
unsigned int irq, irq_hw_number_t hwirq)
{
ICMR &= ~(1 << d->irq);
irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
return 0;
}
static void sa1100_unmask_irq(struct irq_data *d)
{
ICMR |= (1 << d->irq);
}
/*
* Apart form GPIOs, only the RTC alarm can be a wakeup event.
*/
static int sa1100_set_wake(struct irq_data *d, unsigned int on)
{
if (d->irq == IRQ_RTCAlrm) {
if (on)
PWER |= PWER_RTC;
else
PWER &= ~PWER_RTC;
return 0;
}
return -EINVAL;
}
static struct irq_chip sa1100_normal_chip = {
.name = "SC",
.irq_ack = sa1100_mask_irq,
.irq_mask = sa1100_mask_irq,
.irq_unmask = sa1100_unmask_irq,
.irq_set_wake = sa1100_set_wake,
static struct irq_domain_ops sa1100_high_gpio_irqdomain_ops = {
.map = sa1100_high_gpio_irqdomain_map,
.xlate = irq_domain_xlate_onetwocell,
};
static struct irq_domain *sa1100_high_gpio_irqdomain;
static struct resource irq_resource =
DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs");
@ -291,10 +312,25 @@ static int __init sa1100irq_init_devicefs(void)
device_initcall(sa1100irq_init_devicefs);
static asmlinkage void __exception_irq_entry
sa1100_handle_irq(struct pt_regs *regs)
{
uint32_t icip, icmr, mask;
do {
icip = (ICIP);
icmr = (ICMR);
mask = icip & icmr;
if (mask == 0)
break;
handle_IRQ(ffs(mask) - 1 + IRQ_GPIO0, regs);
} while (1);
}
void __init sa1100_init_irq(void)
{
unsigned int irq;
request_resource(&iomem_resource, &irq_resource);
/* disable all IRQs */
@ -314,29 +350,24 @@ void __init sa1100_init_irq(void)
*/
ICCR = 1;
for (irq = 0; irq <= 10; irq++) {
irq_set_chip_and_handler(irq, &sa1100_low_gpio_chip,
handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
sa1100_low_gpio_irqdomain = irq_domain_add_legacy(NULL,
11, IRQ_GPIO0, 0,
&sa1100_low_gpio_irqdomain_ops, NULL);
for (irq = 12; irq <= 31; irq++) {
irq_set_chip_and_handler(irq, &sa1100_normal_chip,
handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
sa1100_normal_irqdomain = irq_domain_add_legacy(NULL,
21, IRQ_GPIO11_27, 11,
&sa1100_normal_irqdomain_ops, NULL);
for (irq = 32; irq <= 48; irq++) {
irq_set_chip_and_handler(irq, &sa1100_high_gpio_chip,
handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
sa1100_high_gpio_irqdomain = irq_domain_add_legacy(NULL,
17, IRQ_GPIO11, 11,
&sa1100_high_gpio_irqdomain_ops, NULL);
/*
* Install handler for GPIO 11-27 edge detect interrupts
*/
irq_set_chip(IRQ_GPIO11_27, &sa1100_normal_chip);
irq_set_chained_handler(IRQ_GPIO11_27, sa1100_high_gpio_handler);
set_handle_irq(sa1100_handle_irq);
sa1100_init_gpio();
}

2
arch/arm/mm/Makefile
View File

@ -6,7 +6,7 @@ obj-y := dma-mapping.o extable.o fault.o init.o \
iomap.o
obj-$(CONFIG_MMU) += fault-armv.o flush.o idmap.o ioremap.o \
mmap.o pgd.o mmu.o
mmap.o pgd.o mmu.o pageattr.o
ifneq ($(CONFIG_MMU),y)
obj-y += nommu.o

10
arch/arm/mm/alignment.c
View File

@ -113,7 +113,7 @@ static int safe_usermode(int new_usermode, bool warn)
new_usermode |= UM_FIXUP;
if (warn)
printk(KERN_WARNING "alignment: ignoring faults is unsafe on this CPU. Defaulting to fixup mode.\n");
pr_warn("alignment: ignoring faults is unsafe on this CPU. Defaulting to fixup mode.\n");
}
return new_usermode;
@ -523,7 +523,7 @@ do_alignment_ldmstm(unsigned long addr, unsigned long instr, struct pt_regs *reg
* processor for us.
*/
if (addr != eaddr) {
printk(KERN_ERR "LDMSTM: PC = %08lx, instr = %08lx, "
pr_err("LDMSTM: PC = %08lx, instr = %08lx, "
"addr = %08lx, eaddr = %08lx\n",
instruction_pointer(regs), instr, addr, eaddr);
show_regs(regs);
@ -567,7 +567,7 @@ do_alignment_ldmstm(unsigned long addr, unsigned long instr, struct pt_regs *reg
return TYPE_FAULT;
bad:
printk(KERN_ERR "Alignment trap: not handling ldm with s-bit set\n");
pr_err("Alignment trap: not handling ldm with s-bit set\n");
return TYPE_ERROR;
}
@ -899,13 +899,13 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
return 0;
swp:
printk(KERN_ERR "Alignment trap: not handling swp instruction\n");
pr_err("Alignment trap: not handling swp instruction\n");
bad:
/*
* Oops, we didn't handle the instruction.
*/
printk(KERN_ERR "Alignment trap: not handling instruction "
pr_err("Alignment trap: not handling instruction "
"%0*lx at [<%08lx>]\n",
isize << 1,
isize == 2 ? tinstr : instr, instrptr);

6
arch/arm/mm/cache-feroceon-l2.c
View File

@ -313,7 +313,7 @@ static void __init disable_l2_prefetch(void)
*/
u = read_extra_features();
if (!(u & 0x01000000)) {
printk(KERN_INFO "Feroceon L2: Disabling L2 prefetch.\n");
pr_info("Feroceon L2: Disabling L2 prefetch.\n");
write_extra_features(u | 0x01000000);
}
}
@ -326,7 +326,7 @@ static void __init enable_l2(void)
if (!(u & 0x00400000)) {
int i, d;
printk(KERN_INFO "Feroceon L2: Enabling L2\n");
pr_info("Feroceon L2: Enabling L2\n");
d = flush_and_disable_dcache();
i = invalidate_and_disable_icache();
@ -353,7 +353,7 @@ void __init feroceon_l2_init(int __l2_wt_override)
enable_l2();
printk(KERN_INFO "Feroceon L2: Cache support initialised%s.\n",
pr_info("Feroceon L2: Cache support initialised%s.\n",
l2_wt_override ? ", in WT override mode" : "");
}
#ifdef CONFIG_OF

12
arch/arm/mm/cache-tauros2.c
View File

@ -185,7 +185,7 @@ static void enable_extra_feature(unsigned int features)
u &= ~0x01000000;
else
u |= 0x01000000;
printk(KERN_INFO "Tauros2: %s L2 prefetch.\n",
pr_info("Tauros2: %s L2 prefetch.\n",
(features & CACHE_TAUROS2_PREFETCH_ON)
? "Enabling" : "Disabling");
@ -193,7 +193,7 @@ static void enable_extra_feature(unsigned int features)
u |= 0x00100000;
else
u &= ~0x00100000;
printk(KERN_INFO "Tauros2: %s line fill burt8.\n",
pr_info("Tauros2: %s line fill burt8.\n",
(features & CACHE_TAUROS2_LINEFILL_BURST8)
? "Enabling" : "Disabling");
@ -216,7 +216,7 @@ static void __init tauros2_internal_init(unsigned int features)
*/
feat = read_extra_features();
if (!(feat & 0x00400000)) {
printk(KERN_INFO "Tauros2: Enabling L2 cache.\n");
pr_info("Tauros2: Enabling L2 cache.\n");
write_extra_features(feat | 0x00400000);
}
@ -253,7 +253,7 @@ static void __init tauros2_internal_init(unsigned int features)
*/
actlr = read_actlr();
if (!(actlr & 0x00000002)) {
printk(KERN_INFO "Tauros2: Enabling L2 cache.\n");
pr_info("Tauros2: Enabling L2 cache.\n");
write_actlr(actlr | 0x00000002);
}
@ -262,11 +262,11 @@ static void __init tauros2_internal_init(unsigned int features)
#endif
if (mode == NULL) {
printk(KERN_CRIT "Tauros2: Unable to detect CPU mode.\n");
pr_crit("Tauros2: Unable to detect CPU mode.\n");
return;
}
printk(KERN_INFO "Tauros2: L2 cache support initialised "
pr_info("Tauros2: L2 cache support initialised "
"in %s mode.\n", mode);
}

58
arch/arm/mm/context.c
View File

@ -184,36 +184,46 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
u64 asid = atomic64_read(&mm->context.id);
u64 generation = atomic64_read(&asid_generation);
if (asid != 0 && is_reserved_asid(asid)) {
if (asid != 0) {
/*
* Our current ASID was active during a rollover, we can
* continue to use it and this was just a false alarm.
* If our current ASID was active during a rollover, we
* can continue to use it and this was just a false alarm.
*/
asid = generation | (asid & ~ASID_MASK);
} else {
if (is_reserved_asid(asid))
return generation | (asid & ~ASID_MASK);
/*
* Allocate a free ASID. If we can't find one, take a
* note of the currently active ASIDs and mark the TLBs
* as requiring flushes. We always count from ASID #1,
* as we reserve ASID #0 to switch via TTBR0 and to
* avoid speculative page table walks from hitting in
* any partial walk caches, which could be populated
* from overlapping level-1 descriptors used to map both
* the module area and the userspace stack.
* We had a valid ASID in a previous life, so try to re-use
* it if possible.,
*/
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, cur_idx);
if (asid == NUM_USER_ASIDS) {
generation = atomic64_add_return(ASID_FIRST_VERSION,
&asid_generation);
flush_context(cpu);
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
}
__set_bit(asid, asid_map);
cur_idx = asid;
asid |= generation;
cpumask_clear(mm_cpumask(mm));
asid &= ~ASID_MASK;
if (!__test_and_set_bit(asid, asid_map))
goto bump_gen;
}
/*
* Allocate a free ASID. If we can't find one, take a note of the
* currently active ASIDs and mark the TLBs as requiring flushes.
* We always count from ASID #1, as we reserve ASID #0 to switch
* via TTBR0 and to avoid speculative page table walks from hitting
* in any partial walk caches, which could be populated from
* overlapping level-1 descriptors used to map both the module
* area and the userspace stack.
*/
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, cur_idx);
if (asid == NUM_USER_ASIDS) {
generation = atomic64_add_return(ASID_FIRST_VERSION,
&asid_generation);
flush_context(cpu);
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
}
__set_bit(asid, asid_map);
cur_idx = asid;
bump_gen:
asid |= generation;
cpumask_clear(mm_cpumask(mm));
return asid;
}

2
arch/arm/mm/copypage-v6.c
View File

@ -62,7 +62,7 @@ static void discard_old_kernel_data(void *kto)
__asm__("mcrr p15, 0, %1, %0, c6 @ 0xec401f06"
:
: "r" (kto),
"r" ((unsigned long)kto + PAGE_SIZE - L1_CACHE_BYTES)
"r" ((unsigned long)kto + PAGE_SIZE - 1)
: "cc");
}

6
arch/arm/mm/fault-armv.c
View File

@ -235,7 +235,7 @@ void __init check_writebuffer_bugs(void)
const char *reason;
unsigned long v = 1;
printk(KERN_INFO "CPU: Testing write buffer coherency: ");
pr_info("CPU: Testing write buffer coherency: ");
page = alloc_page(GFP_KERNEL);
if (page) {
@ -261,9 +261,9 @@ void __init check_writebuffer_bugs(void)
}
if (v) {
printk("failed, %s\n", reason);
pr_cont("failed, %s\n", reason);
shared_pte_mask = L_PTE_MT_UNCACHED;
} else {
printk("ok\n");
pr_cont("ok\n");
}
}

31
arch/arm/mm/fault.c
View File

@ -63,9 +63,9 @@ void show_pte(struct mm_struct *mm, unsigned long addr)
if (!mm)
mm = &init_mm;
printk(KERN_ALERT "pgd = %p\n", mm->pgd);
pr_alert("pgd = %p\n", mm->pgd);
pgd = pgd_offset(mm, addr);
printk(KERN_ALERT "[%08lx] *pgd=%08llx",
pr_alert("[%08lx] *pgd=%08llx",
addr, (long long)pgd_val(*pgd));
do {
@ -77,31 +77,31 @@ void show_pte(struct mm_struct *mm, unsigned long addr)
break;
if (pgd_bad(*pgd)) {
printk("(bad)");
pr_cont("(bad)");
break;
}
pud = pud_offset(pgd, addr);
if (PTRS_PER_PUD != 1)
printk(", *pud=%08llx", (long long)pud_val(*pud));
pr_cont(", *pud=%08llx", (long long)pud_val(*pud));
if (pud_none(*pud))
break;
if (pud_bad(*pud)) {
printk("(bad)");
pr_cont("(bad)");
break;
}
pmd = pmd_offset(pud, addr);
if (PTRS_PER_PMD != 1)
printk(", *pmd=%08llx", (long long)pmd_val(*pmd));
pr_cont(", *pmd=%08llx", (long long)pmd_val(*pmd));
if (pmd_none(*pmd))
break;
if (pmd_bad(*pmd)) {
printk("(bad)");
pr_cont("(bad)");
break;
}
@ -110,15 +110,15 @@ void show_pte(struct mm_struct *mm, unsigned long addr)
break;
pte = pte_offset_map(pmd, addr);
printk(", *pte=%08llx", (long long)pte_val(*pte));
pr_cont(", *pte=%08llx", (long long)pte_val(*pte));
#ifndef CONFIG_ARM_LPAE
printk(", *ppte=%08llx",
pr_cont(", *ppte=%08llx",
(long long)pte_val(pte[PTE_HWTABLE_PTRS]));
#endif
pte_unmap(pte);
} while(0);
printk("\n");
pr_cont("\n");
}
#else /* CONFIG_MMU */
void show_pte(struct mm_struct *mm, unsigned long addr)
@ -142,10 +142,9 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
* No handler, we'll have to terminate things with extreme prejudice.
*/
bust_spinlocks(1);
printk(KERN_ALERT
"Unable to handle kernel %s at virtual address %08lx\n",
(addr < PAGE_SIZE) ? "NULL pointer dereference" :
"paging request", addr);
pr_alert("Unable to handle kernel %s at virtual address %08lx\n",
(addr < PAGE_SIZE) ? "NULL pointer dereference" :
"paging request", addr);
show_pte(mm, addr);
die("Oops", regs, fsr);
@ -551,7 +550,7 @@ do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
if (!inf->fn(addr, fsr & ~FSR_LNX_PF, regs))
return;
printk(KERN_ALERT "Unhandled fault: %s (0x%03x) at 0x%08lx\n",
pr_alert("Unhandled fault: %s (0x%03x) at 0x%08lx\n",
inf->name, fsr, addr);
info.si_signo = inf->sig;
@ -583,7 +582,7 @@ do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs)
if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
return;
printk(KERN_ALERT "Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
pr_alert("Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
inf->name, ifsr, addr);
info.si_signo = inf->sig;

2
arch/arm/mm/flush.c
View File

@ -33,7 +33,7 @@ static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
asm( "mcrr p15, 0, %1, %0, c14\n"
" mcr p15, 0, %2, c7, c10, 4"
:
: "r" (to), "r" (to + PAGE_SIZE - L1_CACHE_BYTES), "r" (zero)
: "r" (to), "r" (to + PAGE_SIZE - 1), "r" (zero)
: "cc");
}

4
arch/arm/mm/init.c
View File

@ -67,7 +67,7 @@ early_param("initrd", early_initrd);
static int __init parse_tag_initrd(const struct tag *tag)
{
printk(KERN_WARNING "ATAG_INITRD is deprecated; "
pr_warn("ATAG_INITRD is deprecated; "
"please update your bootloader.\n");
phys_initrd_start = __virt_to_phys(tag->u.initrd.start);
phys_initrd_size = tag->u.initrd.size;
@ -544,7 +544,7 @@ void __init mem_init(void)
#define MLM(b, t) b, t, ((t) - (b)) >> 20
#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K)
printk(KERN_NOTICE "Virtual kernel memory layout:\n"
pr_notice("Virtual kernel memory layout:\n"
" vector : 0x%08lx - 0x%08lx (%4ld kB)\n"
#ifdef CONFIG_HAVE_TCM
" DTCM : 0x%08lx - 0x%08lx (%4ld kB)\n"

94
arch/arm/mm/mmu.c
View File

@ -52,6 +52,8 @@ EXPORT_SYMBOL(empty_zero_page);
*/
pmd_t *top_pmd;
pmdval_t user_pmd_table = _PAGE_USER_TABLE;
#define CPOLICY_UNCACHED 0
#define CPOLICY_BUFFERED 1
#define CPOLICY_WRITETHROUGH 2
@ -192,7 +194,7 @@ early_param("cachepolicy", early_cachepolicy);
static int __init early_nocache(char *__unused)
{
char *p = "buffered";
printk(KERN_WARNING "nocache is deprecated; use cachepolicy=%s\n", p);
pr_warn("nocache is deprecated; use cachepolicy=%s\n", p);
early_cachepolicy(p);
return 0;
}
@ -201,7 +203,7 @@ early_param("nocache", early_nocache);
static int __init early_nowrite(char *__unused)
{
char *p = "uncached";
printk(KERN_WARNING "nowb is deprecated; use cachepolicy=%s\n", p);
pr_warn("nowb is deprecated; use cachepolicy=%s\n", p);
early_cachepolicy(p);
return 0;
}
@ -354,44 +356,6 @@ const struct mem_type *get_mem_type(unsigned int type)
}
EXPORT_SYMBOL(get_mem_type);
#define PTE_SET_FN(_name, pteop) \
static int pte_set_##_name(pte_t *ptep, pgtable_t token, unsigned long addr, \
void *data) \
{ \
pte_t pte = pteop(*ptep); \
\
set_pte_ext(ptep, pte, 0); \
return 0; \
} \
#define SET_MEMORY_FN(_name, callback) \
int set_memory_##_name(unsigned long addr, int numpages) \
{ \
unsigned long start = addr; \
unsigned long size = PAGE_SIZE*numpages; \
unsigned end = start + size; \
\
if (start < MODULES_VADDR || start >= MODULES_END) \
return -EINVAL;\
\
if (end < MODULES_VADDR || end >= MODULES_END) \
return -EINVAL; \
\
apply_to_page_range(&init_mm, start, size, callback, NULL); \
flush_tlb_kernel_range(start, end); \
return 0;\
}
PTE_SET_FN(ro, pte_wrprotect)
PTE_SET_FN(rw, pte_mkwrite)
PTE_SET_FN(x, pte_mkexec)
PTE_SET_FN(nx, pte_mknexec)
SET_MEMORY_FN(ro, pte_set_ro)
SET_MEMORY_FN(rw, pte_set_rw)
SET_MEMORY_FN(x, pte_set_x)
SET_MEMORY_FN(nx, pte_set_nx)
/*
* Adjust the PMD section entries according to the CPU in use.
*/
@ -528,14 +492,23 @@ static void __init build_mem_type_table(void)
hyp_device_pgprot = mem_types[MT_DEVICE].prot_pte;
s2_device_pgprot = mem_types[MT_DEVICE].prot_pte_s2;
#ifndef CONFIG_ARM_LPAE
/*
* We don't use domains on ARMv6 (since this causes problems with
* v6/v7 kernels), so we must use a separate memory type for user
* r/o, kernel r/w to map the vectors page.
*/
#ifndef CONFIG_ARM_LPAE
if (cpu_arch == CPU_ARCH_ARMv6)
vecs_pgprot |= L_PTE_MT_VECTORS;
/*
* Check is it with support for the PXN bit
* in the Short-descriptor translation table format descriptors.
*/
if (cpu_arch == CPU_ARCH_ARMv7 &&
(read_cpuid_ext(CPUID_EXT_MMFR0) & 0xF) == 4) {
user_pmd_table |= PMD_PXNTABLE;
}
#endif
/*
@ -605,6 +578,11 @@ static void __init build_mem_type_table(void)
}
kern_pgprot |= PTE_EXT_AF;
vecs_pgprot |= PTE_EXT_AF;
/*
* Set PXN for user mappings
*/
user_pgprot |= PTE_EXT_PXN;
#endif
for (i = 0; i < 16; i++) {
@ -786,8 +764,7 @@ static void __init create_36bit_mapping(struct map_desc *md,
length = PAGE_ALIGN(md->length);
if (!(cpu_architecture() >= CPU_ARCH_ARMv6 || cpu_is_xsc3())) {
printk(KERN_ERR "MM: CPU does not support supersection "
"mapping for 0x%08llx at 0x%08lx\n",
pr_err("MM: CPU does not support supersection mapping for 0x%08llx at 0x%08lx\n",
(long long)__pfn_to_phys((u64)md->pfn), addr);
return;
}
@ -799,15 +776,13 @@ static void __init create_36bit_mapping(struct map_desc *md,
* of the actual domain assignments in use.
*/
if (type->domain) {
printk(KERN_ERR "MM: invalid domain in supersection "
"mapping for 0x%08llx at 0x%08lx\n",
pr_err("MM: invalid domain in supersection mapping for 0x%08llx at 0x%08lx\n",
(long long)__pfn_to_phys((u64)md->pfn), addr);
return;
}
if ((addr | length | __pfn_to_phys(md->pfn)) & ~SUPERSECTION_MASK) {
printk(KERN_ERR "MM: cannot create mapping for 0x%08llx"
" at 0x%08lx invalid alignment\n",
pr_err("MM: cannot create mapping for 0x%08llx at 0x%08lx invalid alignment\n",
(long long)__pfn_to_phys((u64)md->pfn), addr);
return;
}
@ -850,18 +825,16 @@ static void __init create_mapping(struct map_desc *md)
pgd_t *pgd;
if (md->virtual != vectors_base() && md->virtual < TASK_SIZE) {
printk(KERN_WARNING "BUG: not creating mapping for 0x%08llx"
" at 0x%08lx in user region\n",
(long long)__pfn_to_phys((u64)md->pfn), md->virtual);
pr_warn("BUG: not creating mapping for 0x%08llx at 0x%08lx in user region\n",
(long long)__pfn_to_phys((u64)md->pfn), md->virtual);
return;
}
if ((md->type == MT_DEVICE || md->type == MT_ROM) &&
md->virtual >= PAGE_OFFSET &&
(md->virtual < VMALLOC_START || md->virtual >= VMALLOC_END)) {
printk(KERN_WARNING "BUG: mapping for 0x%08llx"
" at 0x%08lx out of vmalloc space\n",
(long long)__pfn_to_phys((u64)md->pfn), md->virtual);
pr_warn("BUG: mapping for 0x%08llx at 0x%08lx out of vmalloc space\n",
(long long)__pfn_to_phys((u64)md->pfn), md->virtual);
}
type = &mem_types[md->type];
@ -881,9 +854,8 @@ static void __init create_mapping(struct map_desc *md)
length = PAGE_ALIGN(md->length + (md->virtual & ~PAGE_MASK));
if (type->prot_l1 == 0 && ((addr | phys | length) & ~SECTION_MASK)) {
printk(KERN_WARNING "BUG: map for 0x%08llx at 0x%08lx can not "
"be mapped using pages, ignoring.\n",
(long long)__pfn_to_phys(md->pfn), addr);
pr_warn("BUG: map for 0x%08llx at 0x%08lx can not be mapped using pages, ignoring.\n",
(long long)__pfn_to_phys(md->pfn), addr);
return;
}
@ -1053,15 +1025,13 @@ static int __init early_vmalloc(char *arg)
if (vmalloc_reserve < SZ_16M) {
vmalloc_reserve = SZ_16M;
printk(KERN_WARNING
"vmalloc area too small, limiting to %luMB\n",
pr_warn("vmalloc area too small, limiting to %luMB\n",
vmalloc_reserve >> 20);
}
if (vmalloc_reserve > VMALLOC_END - (PAGE_OFFSET + SZ_32M)) {
vmalloc_reserve = VMALLOC_END - (PAGE_OFFSET + SZ_32M);
printk(KERN_WARNING
"vmalloc area is too big, limiting to %luMB\n",
pr_warn("vmalloc area is too big, limiting to %luMB\n",
vmalloc_reserve >> 20);
}
@ -1094,7 +1064,7 @@ void __init sanity_check_meminfo(void)
if (highmem) {
pr_notice("Ignoring RAM at %pa-%pa (!CONFIG_HIGHMEM)\n",
&block_start, &block_end);
&block_start, &block_end);
memblock_remove(reg->base, reg->size);
continue;
}
@ -1103,7 +1073,7 @@ void __init sanity_check_meminfo(void)
phys_addr_t overlap_size = reg->size - size_limit;
pr_notice("Truncating RAM at %pa-%pa to -%pa",
&block_start, &block_end, &vmalloc_limit);
&block_start, &block_end, &vmalloc_limit);
memblock_remove(vmalloc_limit, overlap_size);
block_end = vmalloc_limit;
}

91
arch/arm/mm/pageattr.c Normal file
View File

@ -0,0 +1,91 @@
/*
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/mm.h>
#include <linux/module.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
struct page_change_data {
pgprot_t set_mask;
pgprot_t clear_mask;
};
static int change_page_range(pte_t *ptep, pgtable_t token, unsigned long addr,
void *data)
{
struct page_change_data *cdata = data;
pte_t pte = *ptep;
pte = clear_pte_bit(pte, cdata->clear_mask);
pte = set_pte_bit(pte, cdata->set_mask);
set_pte_ext(ptep, pte, 0);
return 0;
}
static int change_memory_common(unsigned long addr, int numpages,
pgprot_t set_mask, pgprot_t clear_mask)
{
unsigned long start = addr;
unsigned long size = PAGE_SIZE*numpages;
unsigned long end = start + size;
int ret;
struct page_change_data data;
if (!IS_ALIGNED(addr, PAGE_SIZE)) {
start &= PAGE_MASK;
end = start + size;
WARN_ON_ONCE(1);
}
if (!is_module_address(start) || !is_module_address(end - 1))
return -EINVAL;
data.set_mask = set_mask;
data.clear_mask = clear_mask;
ret = apply_to_page_range(&init_mm, start, size, change_page_range,
&data);
flush_tlb_kernel_range(start, end);
return ret;
}
int set_memory_ro(unsigned long addr, int numpages)
{
return change_memory_common(addr, numpages,
__pgprot(L_PTE_RDONLY),
__pgprot(0));
}
int set_memory_rw(unsigned long addr, int numpages)
{
return change_memory_common(addr, numpages,
__pgprot(0),
__pgprot(L_PTE_RDONLY));
}
int set_memory_nx(unsigned long addr, int numpages)
{
return change_memory_common(addr, numpages,
__pgprot(L_PTE_XN),
__pgprot(0));
}
int set_memory_x(unsigned long addr, int numpages)
{
return change_memory_common(addr, numpages,
__pgprot(0),
__pgprot(L_PTE_XN));
}

5
arch/arm/mm/proc-v7.S
View File

@ -591,9 +591,10 @@ __krait_proc_info:
/*
* Some Krait processors don't indicate support for SDIV and UDIV
* instructions in the ARM instruction set, even though they actually
* do support them.
* do support them. They also don't indicate support for fused multiply
* instructions even though they actually do support them.
*/
__v7_proc __v7_setup, hwcaps = HWCAP_IDIV
__v7_proc __v7_setup, hwcaps = HWCAP_IDIV | HWCAP_VFPv4
.size __krait_proc_info, . - __krait_proc_info
/*

8
arch/arm/nwfpe/fpmodule.c
View File

@ -86,20 +86,20 @@ extern void nwfpe_enter(void);
static int __init fpe_init(void)
{
if (sizeof(FPA11) > sizeof(union fp_state)) {
printk(KERN_ERR "nwfpe: bad structure size\n");
pr_err("nwfpe: bad structure size\n");
return -EINVAL;
}
if (sizeof(FPREG) != 12) {
printk(KERN_ERR "nwfpe: bad register size\n");
pr_err("nwfpe: bad register size\n");
return -EINVAL;
}
if (fpe_type[0] && strcmp(fpe_type, "nwfpe"))
return 0;
/* Display title, version and copyright information. */
printk(KERN_WARNING "NetWinder Floating Point Emulator V0.97 ("
NWFPE_BITS " precision)\n");
pr_info("NetWinder Floating Point Emulator V0.97 ("
NWFPE_BITS " precision)\n");
thread_register_notifier(&nwfpe_notifier_block);

6
arch/arm/vfp/vfphw.S
View File

@ -197,6 +197,12 @@ look_for_VFP_exceptions:
tst r5, #FPSCR_IXE
bne process_exception
tst r5, #FPSCR_LENGTH_MASK
beq skip
orr r1, r1, #FPEXC_DEX
b process_exception
skip:
@ Fall into hand on to next handler - appropriate coproc instr
@ not recognised by VFP

102
arch/arm/vfp/vfpmodule.c
View File

@ -738,63 +738,73 @@ static int __init vfp_init(void)
vfp_vector = vfp_null_entry;
pr_info("VFP support v0.3: ");
if (VFP_arch)
if (VFP_arch) {
pr_cont("not present\n");
else if (vfpsid & FPSID_NODOUBLE) {
pr_cont("no double precision support\n");
} else {
hotcpu_notifier(vfp_hotplug, 0);
VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT; /* Extract the architecture version */
pr_cont("implementor %02x architecture %d part %02x variant %x rev %x\n",
(vfpsid & FPSID_IMPLEMENTER_MASK) >> FPSID_IMPLEMENTER_BIT,
(vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT,
(vfpsid & FPSID_PART_MASK) >> FPSID_PART_BIT,
(vfpsid & FPSID_VARIANT_MASK) >> FPSID_VARIANT_BIT,
(vfpsid & FPSID_REV_MASK) >> FPSID_REV_BIT);
vfp_vector = vfp_support_entry;
thread_register_notifier(&vfp_notifier_block);
vfp_pm_init();
/*
* We detected VFP, and the support code is
* in place; report VFP support to userspace.
*/
elf_hwcap |= HWCAP_VFP;
#ifdef CONFIG_VFPv3
if (VFP_arch >= 2) {
elf_hwcap |= HWCAP_VFPv3;
/*
* Check for VFPv3 D16 and VFPv4 D16. CPUs in
* this configuration only have 16 x 64bit
* registers.
*/
if (((fmrx(MVFR0) & MVFR0_A_SIMD_MASK)) == 1)
elf_hwcap |= HWCAP_VFPv3D16; /* also v4-D16 */
else
elf_hwcap |= HWCAP_VFPD32;
}
#endif
return 0;
/* Extract the architecture on CPUID scheme */
} else if ((read_cpuid_id() & 0x000f0000) == 0x000f0000) {
VFP_arch = vfpsid & FPSID_CPUID_ARCH_MASK;
VFP_arch >>= FPSID_ARCH_BIT;
/*
* Check for the presence of the Advanced SIMD
* load/store instructions, integer and single
* precision floating point operations. Only check
* for NEON if the hardware has the MVFR registers.
*/
if ((read_cpuid_id() & 0x000f0000) == 0x000f0000) {
#ifdef CONFIG_NEON
if ((fmrx(MVFR1) & 0x000fff00) == 0x00011100)
elf_hwcap |= HWCAP_NEON;
#endif
#ifdef CONFIG_VFPv3
if (IS_ENABLED(CONFIG_NEON) &&
(fmrx(MVFR1) & 0x000fff00) == 0x00011100)
elf_hwcap |= HWCAP_NEON;
if (IS_ENABLED(CONFIG_VFPv3)) {
u32 mvfr0 = fmrx(MVFR0);
if (((mvfr0 & MVFR0_DP_MASK) >> MVFR0_DP_BIT) == 0x2 ||
((mvfr0 & MVFR0_SP_MASK) >> MVFR0_SP_BIT) == 0x2) {
elf_hwcap |= HWCAP_VFPv3;
/*
* Check for VFPv3 D16 and VFPv4 D16. CPUs in
* this configuration only have 16 x 64bit
* registers.
*/
if ((mvfr0 & MVFR0_A_SIMD_MASK) == 1)
/* also v4-D16 */
elf_hwcap |= HWCAP_VFPv3D16;
else
elf_hwcap |= HWCAP_VFPD32;
}
if ((fmrx(MVFR1) & 0xf0000000) == 0x10000000)
elf_hwcap |= HWCAP_VFPv4;
#endif
}
/* Extract the architecture version on pre-cpuid scheme */
} else {
if (vfpsid & FPSID_NODOUBLE) {
pr_cont("no double precision support\n");
return 0;
}
VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT;
}
hotcpu_notifier(vfp_hotplug, 0);
vfp_vector = vfp_support_entry;
thread_register_notifier(&vfp_notifier_block);
vfp_pm_init();
/*
* We detected VFP, and the support code is
* in place; report VFP support to userspace.
*/
elf_hwcap |= HWCAP_VFP;
pr_cont("implementor %02x architecture %d part %02x variant %x rev %x\n",
(vfpsid & FPSID_IMPLEMENTER_MASK) >> FPSID_IMPLEMENTER_BIT,
VFP_arch,
(vfpsid & FPSID_PART_MASK) >> FPSID_PART_BIT,
(vfpsid & FPSID_VARIANT_MASK) >> FPSID_VARIANT_BIT,
(vfpsid & FPSID_REV_MASK) >> FPSID_REV_BIT);
return 0;
}

2
arch/arm/vfp/vfpsingle.c
View File

@ -290,7 +290,7 @@ u32 vfp_estimate_sqrt_significand(u32 exponent, u32 significand)
u32 z, a;
if ((significand & 0xc0000000) != 0x40000000) {
printk(KERN_WARNING "VFP: estimate_sqrt: invalid significand\n");
pr_warn("VFP: estimate_sqrt: invalid significand\n");
}
a = significand << 1;

15
drivers/amba/bus.c
View File

@ -95,8 +95,12 @@ static int amba_pm_runtime_suspend(struct device *dev)
struct amba_device *pcdev = to_amba_device(dev);
int ret = pm_generic_runtime_suspend(dev);
if (ret == 0 && dev->driver)
clk_disable_unprepare(pcdev->pclk);
if (ret == 0 && dev->driver) {
if (pm_runtime_is_irq_safe(dev))
clk_disable(pcdev->pclk);
else
clk_disable_unprepare(pcdev->pclk);
}
return ret;
}
@ -107,7 +111,10 @@ static int amba_pm_runtime_resume(struct device *dev)
int ret;
if (dev->driver) {
ret = clk_prepare_enable(pcdev->pclk);
if (pm_runtime_is_irq_safe(dev))
ret = clk_enable(pcdev->pclk);
else
ret = clk_prepare_enable(pcdev->pclk);
/* Failure is probably fatal to the system, but... */
if (ret)
return ret;
@ -115,7 +122,7 @@ static int amba_pm_runtime_resume(struct device *dev)
return pm_generic_runtime_resume(dev);
}
#endif
#endif /* CONFIG_PM */
static const struct dev_pm_ops amba_pm = {
.suspend = pm_generic_suspend,

99
drivers/dma/pl330.c
View File

@ -27,6 +27,7 @@
#include <linux/of.h>
#include <linux/of_dma.h>
#include <linux/err.h>
#include <linux/pm_runtime.h>
#include "dmaengine.h"
#define PL330_MAX_CHAN 8
@ -265,6 +266,9 @@ static unsigned cmd_line;
#define NR_DEFAULT_DESC 16
/* Delay for runtime PM autosuspend, ms */
#define PL330_AUTOSUSPEND_DELAY 20
/* Populated by the PL330 core driver for DMA API driver's info */
struct pl330_config {
u32 periph_id;
@ -1958,6 +1962,7 @@ static void pl330_tasklet(unsigned long data)
struct dma_pl330_chan *pch = (struct dma_pl330_chan *)data;
struct dma_pl330_desc *desc, *_dt;
unsigned long flags;
bool power_down = false;
spin_lock_irqsave(&pch->lock, flags);
@ -1972,10 +1977,17 @@ static void pl330_tasklet(unsigned long data)
/* Try to submit a req imm. next to the last completed cookie */
fill_queue(pch);
/* Make sure the PL330 Channel thread is active */
spin_lock(&pch->thread->dmac->lock);
_start(pch->thread);
spin_unlock(&pch->thread->dmac->lock);
if (list_empty(&pch->work_list)) {
spin_lock(&pch->thread->dmac->lock);
_stop(pch->thread);
spin_unlock(&pch->thread->dmac->lock);
power_down = true;
} else {
/* Make sure the PL330 Channel thread is active */
spin_lock(&pch->thread->dmac->lock);
_start(pch->thread);
spin_unlock(&pch->thread->dmac->lock);
}
while (!list_empty(&pch->completed_list)) {
dma_async_tx_callback callback;
@ -1990,6 +2002,12 @@ static void pl330_tasklet(unsigned long data)
if (pch->cyclic) {
desc->status = PREP;
list_move_tail(&desc->node, &pch->work_list);
if (power_down) {
spin_lock(&pch->thread->dmac->lock);
_start(pch->thread);
spin_unlock(&pch->thread->dmac->lock);
power_down = false;
}
} else {
desc->status = FREE;
list_move_tail(&desc->node, &pch->dmac->desc_pool);
@ -2004,6 +2022,12 @@ static void pl330_tasklet(unsigned long data)
}
}
spin_unlock_irqrestore(&pch->lock, flags);
/* If work list empty, power down */
if (power_down) {
pm_runtime_mark_last_busy(pch->dmac->ddma.dev);
pm_runtime_put_autosuspend(pch->dmac->ddma.dev);
}
}
bool pl330_filter(struct dma_chan *chan, void *param)
@ -2073,6 +2097,7 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
switch (cmd) {
case DMA_TERMINATE_ALL:
pm_runtime_get_sync(pl330->ddma.dev);
spin_lock_irqsave(&pch->lock, flags);
spin_lock(&pl330->lock);
@ -2099,10 +2124,15 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
dma_cookie_complete(&desc->txd);
}
if (!list_empty(&pch->work_list))
pm_runtime_put(pl330->ddma.dev);
list_splice_tail_init(&pch->submitted_list, &pl330->desc_pool);
list_splice_tail_init(&pch->work_list, &pl330->desc_pool);
list_splice_tail_init(&pch->completed_list, &pl330->desc_pool);
spin_unlock_irqrestore(&pch->lock, flags);
pm_runtime_mark_last_busy(pl330->ddma.dev);
pm_runtime_put_autosuspend(pl330->ddma.dev);
break;
case DMA_SLAVE_CONFIG:
slave_config = (struct dma_slave_config *)arg;
@ -2138,6 +2168,7 @@ static void pl330_free_chan_resources(struct dma_chan *chan)
tasklet_kill(&pch->task);
pm_runtime_get_sync(pch->dmac->ddma.dev);
spin_lock_irqsave(&pch->lock, flags);
pl330_release_channel(pch->thread);
@ -2147,6 +2178,8 @@ static void pl330_free_chan_resources(struct dma_chan *chan)
list_splice_tail_init(&pch->work_list, &pch->dmac->desc_pool);
spin_unlock_irqrestore(&pch->lock, flags);
pm_runtime_mark_last_busy(pch->dmac->ddma.dev);
pm_runtime_put_autosuspend(pch->dmac->ddma.dev);
}
static enum dma_status
@ -2162,6 +2195,15 @@ static void pl330_issue_pending(struct dma_chan *chan)
unsigned long flags;
spin_lock_irqsave(&pch->lock, flags);
if (list_empty(&pch->work_list)) {
/*
* Warn on nothing pending. Empty submitted_list may
* break our pm_runtime usage counter as it is
* updated on work_list emptiness status.
*/
WARN_ON(list_empty(&pch->submitted_list));
pm_runtime_get_sync(pch->dmac->ddma.dev);
}
list_splice_tail_init(&pch->submitted_list, &pch->work_list);
spin_unlock_irqrestore(&pch->lock, flags);
@ -2585,6 +2627,46 @@ static int pl330_dma_device_slave_caps(struct dma_chan *dchan,
return 0;
}
/*
* Runtime PM callbacks are provided by amba/bus.c driver.
*
* It is assumed here that IRQ safe runtime PM is chosen in probe and amba
* bus driver will only disable/enable the clock in runtime PM callbacks.
*/
static int __maybe_unused pl330_suspend(struct device *dev)
{
struct amba_device *pcdev = to_amba_device(dev);
pm_runtime_disable(dev);
if (!pm_runtime_status_suspended(dev)) {
/* amba did not disable the clock */
amba_pclk_disable(pcdev);
}
amba_pclk_unprepare(pcdev);
return 0;
}
static int __maybe_unused pl330_resume(struct device *dev)
{
struct amba_device *pcdev = to_amba_device(dev);
int ret;
ret = amba_pclk_prepare(pcdev);
if (ret)
return ret;
if (!pm_runtime_status_suspended(dev))
ret = amba_pclk_enable(pcdev);
pm_runtime_enable(dev);
return ret;
}
static SIMPLE_DEV_PM_OPS(pl330_pm, pl330_suspend, pl330_resume);
static int
pl330_probe(struct amba_device *adev, const struct amba_id *id)
{
@ -2738,6 +2820,12 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
pcfg->data_buf_dep, pcfg->data_bus_width / 8, pcfg->num_chan,
pcfg->num_peri, pcfg->num_events);
pm_runtime_irq_safe(&adev->dev);
pm_runtime_use_autosuspend(&adev->dev);
pm_runtime_set_autosuspend_delay(&adev->dev, PL330_AUTOSUSPEND_DELAY);
pm_runtime_mark_last_busy(&adev->dev);
pm_runtime_put_autosuspend(&adev->dev);
return 0;
probe_err3:
/* Idle the DMAC */
@ -2764,6 +2852,8 @@ static int pl330_remove(struct amba_device *adev)
struct pl330_dmac *pl330 = amba_get_drvdata(adev);
struct dma_pl330_chan *pch, *_p;
pm_runtime_get_noresume(pl330->ddma.dev);
if (adev->dev.of_node)
of_dma_controller_free(adev->dev.of_node);
@ -2802,6 +2892,7 @@ static struct amba_driver pl330_driver = {
.drv = {
.owner = THIS_MODULE,
.name = "dma-pl330",
.pm = &pl330_pm,
},
.id_table = pl330_ids,
.probe = pl330_probe,

1
drivers/pcmcia/sa1100_generic.c
View File

@ -93,6 +93,7 @@ static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
for (i = 0; i < sinfo->nskt; i++)
soc_pcmcia_remove_one(&sinfo->skt[i]);
clk_put(sinfo->clk);
kfree(sinfo);
return 0;
}

7
drivers/pcmcia/sa1111_generic.c
View File

@ -145,6 +145,12 @@ int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
return -ENOMEM;
s->soc.nr = ops->first + i;
s->soc.clk = clk_get(&dev->dev, NULL);
if (IS_ERR(s->soc.clk)) {
ret = PTR_ERR(s->soc.clk);
kfree(s);
return ret;
}
soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
s->dev = dev;
if (s->soc.nr) {
@ -220,6 +226,7 @@ static int pcmcia_remove(struct sa1111_dev *dev)
for (; s; s = next) {
next = s->next;
soc_pcmcia_remove_one(&s->soc);
clk_put(s->soc.clk);
kfree(s);
}

14
drivers/pcmcia/sa11xx_base.c
View File

@ -135,14 +135,16 @@ sa1100_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
static int
sa1100_pcmcia_set_timing(struct soc_pcmcia_socket *skt)
{
return sa1100_pcmcia_set_mecr(skt, cpufreq_get(0));
unsigned long clk = clk_get_rate(skt->clk);
return sa1100_pcmcia_set_mecr(skt, clk / 1000);
}
static int
sa1100_pcmcia_show_timing(struct soc_pcmcia_socket *skt, char *buf)
{
struct soc_pcmcia_timing timing;
unsigned int clock = cpufreq_get(0);
unsigned int clock = clk_get_rate(skt->clk);
unsigned long mecr = MECR;
char *p = buf;
@ -218,6 +220,11 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
struct skt_dev_info *sinfo;
struct soc_pcmcia_socket *skt;
int i, ret = 0;
struct clk *clk;
clk = clk_get(dev, NULL);
if (IS_ERR(clk))
return PTR_ERR(clk);
sa11xx_drv_pcmcia_ops(ops);
@ -226,12 +233,14 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
return -ENOMEM;
sinfo->nskt = nr;
sinfo->clk = clk;
/* Initialize processor specific parameters */
for (i = 0; i < nr; i++) {
skt = &sinfo->skt[i];
skt->nr = first + i;
skt->clk = clk;
soc_pcmcia_init_one(skt, ops, dev);
ret = sa11xx_drv_pcmcia_add_one(skt);
@ -242,6 +251,7 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
if (ret) {
while (--i >= 0)
soc_pcmcia_remove_one(&sinfo->skt[i]);
clk_put(clk);
kfree(sinfo);
} else {
dev_set_drvdata(dev, sinfo);

4
drivers/pcmcia/soc_common.c
View File

@ -120,6 +120,8 @@ static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt,
if (skt->ops->hw_shutdown)
skt->ops->hw_shutdown(skt);
clk_disable_unprepare(skt->clk);
}
static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
@ -131,6 +133,8 @@ static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
int ret = 0, i;
clk_prepare_enable(skt->clk);
if (skt->ops->hw_init) {
ret = skt->ops->hw_init(skt);
if (ret)

30
drivers/video/fbdev/sa1100fb.c
View File

@ -178,6 +178,7 @@
#include <linux/dma-mapping.h>
#include <linux/mutex.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <video/sa1100fb.h>
@ -416,9 +417,9 @@ sa1100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
var->transp.offset);
#ifdef CONFIG_CPU_FREQ
dev_dbg(fbi->dev, "dma period = %d ps, clock = %d kHz\n",
dev_dbg(fbi->dev, "dma period = %d ps, clock = %ld kHz\n",
sa1100fb_display_dma_period(var),
cpufreq_get(smp_processor_id()));
clk_get_rate(fbi->clk) / 1000);
#endif
return 0;
@ -592,9 +593,10 @@ static struct fb_ops sa1100fb_ops = {
* Calculate the PCD value from the clock rate (in picoseconds).
* We take account of the PPCR clock setting.
*/
static inline unsigned int get_pcd(unsigned int pixclock, unsigned int cpuclock)
static inline unsigned int get_pcd(struct sa1100fb_info *fbi,
unsigned int pixclock)
{
unsigned int pcd = cpuclock / 100;
unsigned int pcd = clk_get_rate(fbi->clk) / 100 / 1000;
pcd *= pixclock;
pcd /= 10000000;
@ -673,7 +675,7 @@ static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_
LCCR2_BegFrmDel(var->upper_margin) +
LCCR2_EndFrmDel(var->lower_margin);
pcd = get_pcd(var->pixclock, cpufreq_get(0));
pcd = get_pcd(fbi, var->pixclock);
new_regs.lccr3 = LCCR3_PixClkDiv(pcd) | fbi->inf->lccr3 |
(var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) |
(var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL);
@ -787,6 +789,9 @@ static void sa1100fb_enable_controller(struct sa1100fb_info *fbi)
fbi->palette_cpu[0] &= 0xcfff;
fbi->palette_cpu[0] |= palette_pbs(&fbi->fb.var);
/* enable LCD controller clock */
clk_prepare_enable(fbi->clk);
/* Sequence from 11.7.10 */
writel_relaxed(fbi->reg_lccr3, fbi->base + LCCR3);
writel_relaxed(fbi->reg_lccr2, fbi->base + LCCR2);
@ -831,6 +836,9 @@ static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
schedule_timeout(20 * HZ / 1000);
remove_wait_queue(&fbi->ctrlr_wait, &wait);
/* disable LCD controller clock */
clk_disable_unprepare(fbi->clk);
}
/*
@ -1009,7 +1017,6 @@ sa1100fb_freq_transition(struct notifier_block *nb, unsigned long val,
void *data)
{
struct sa1100fb_info *fbi = TO_INF(nb, freq_transition);
struct cpufreq_freqs *f = data;
u_int pcd;
switch (val) {
@ -1018,7 +1025,7 @@ sa1100fb_freq_transition(struct notifier_block *nb, unsigned long val,
break;
case CPUFREQ_POSTCHANGE:
pcd = get_pcd(fbi->fb.var.pixclock, f->new);
pcd = get_pcd(fbi, fbi->fb.var.pixclock);
fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | LCCR3_PixClkDiv(pcd);
set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE);
break;
@ -1225,6 +1232,13 @@ static int sa1100fb_probe(struct platform_device *pdev)
if (!fbi)
goto failed;
fbi->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(fbi->clk)) {
ret = PTR_ERR(fbi->clk);
fbi->clk = NULL;
goto failed;
}
fbi->base = ioremap(res->start, resource_size(res));
if (!fbi->base)
goto failed;
@ -1277,6 +1291,8 @@ static int sa1100fb_probe(struct platform_device *pdev)
failed:
if (fbi)
iounmap(fbi->base);
if (fbi->clk)
clk_put(fbi->clk);
kfree(fbi);
release_mem_region(res->start, resource_size(res));
return ret;

1
drivers/video/fbdev/sa1100fb.h
View File

@ -68,6 +68,7 @@ struct sa1100fb_info {
#endif
const struct sa1100fb_mach_info *inf;
struct clk *clk;
};
#define TO_INF(ptr,member) container_of(ptr,struct sa1100fb_info,member)

10
include/linux/amba/bus.h
View File

@ -97,6 +97,16 @@ void amba_release_regions(struct amba_device *);
#define amba_pclk_disable(d) \
do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)
static inline int amba_pclk_prepare(struct amba_device *dev)
{
return clk_prepare(dev->pclk);
}
static inline void amba_pclk_unprepare(struct amba_device *dev)
{
clk_unprepare(dev->pclk);
}
/* Some drivers don't use the struct amba_device */
#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)

6
include/linux/pm_runtime.h
View File

@ -128,6 +128,11 @@ static inline void pm_runtime_mark_last_busy(struct device *dev)
ACCESS_ONCE(dev->power.last_busy) = jiffies;
}
static inline bool pm_runtime_is_irq_safe(struct device *dev)
{
return dev->power.irq_safe;
}
#else /* !CONFIG_PM_RUNTIME */
static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
@ -167,6 +172,7 @@ static inline bool pm_runtime_enabled(struct device *dev) { return false; }
static inline void pm_runtime_no_callbacks(struct device *dev) {}
static inline void pm_runtime_irq_safe(struct device *dev) {}
static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; }
static inline void pm_runtime_mark_last_busy(struct device *dev) {}