Merge branch 'smp' into misc
Conflicts:
arch/arm/kernel/entry-armv.S
arch/arm/mm/ioremap.c
diff --git a/Documentation/arm/00-INDEX b/Documentation/arm/00-INDEX
index ecf7d04..91c24a1 100644
--- a/Documentation/arm/00-INDEX
+++ b/Documentation/arm/00-INDEX
@@ -34,3 +34,5 @@
- description of the virtual memory layout
nwfpe/
- NWFPE floating point emulator documentation
+swp_emulation
+ - SWP/SWPB emulation handler/logging description
diff --git a/Documentation/arm/swp_emulation b/Documentation/arm/swp_emulation
new file mode 100644
index 0000000..af903d2
--- /dev/null
+++ b/Documentation/arm/swp_emulation
@@ -0,0 +1,27 @@
+Software emulation of deprecated SWP instruction (CONFIG_SWP_EMULATE)
+---------------------------------------------------------------------
+
+ARMv6 architecture deprecates use of the SWP/SWPB instructions, and recommeds
+moving to the load-locked/store-conditional instructions LDREX and STREX.
+
+ARMv7 multiprocessing extensions introduce the ability to disable these
+instructions, triggering an undefined instruction exception when executed.
+Trapped instructions are emulated using an LDREX/STREX or LDREXB/STREXB
+sequence. If a memory access fault (an abort) occurs, a segmentation fault is
+signalled to the triggering process.
+
+/proc/cpu/swp_emulation holds some statistics/information, including the PID of
+the last process to trigger the emulation to be invocated. For example:
+---
+Emulated SWP: 12
+Emulated SWPB: 0
+Aborted SWP{B}: 1
+Last process: 314
+---
+
+NOTE: when accessing uncached shared regions, LDREX/STREX rely on an external
+transaction monitoring block called a global monitor to maintain update
+atomicity. If your system does not implement a global monitor, this option can
+cause programs that perform SWP operations to uncached memory to deadlock, as
+the STREX operation will always fail.
+
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 15a1775..6344543 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2,6 +2,7 @@
bool
default y
select HAVE_AOUT
+ select HAVE_DMA_API_DEBUG
select HAVE_IDE
select HAVE_MEMBLOCK
select RTC_LIB
@@ -34,6 +35,9 @@
config HAVE_PWM
bool
+config MIGHT_HAVE_PCI
+ bool
+
config SYS_SUPPORTS_APM_EMULATION
bool
@@ -221,7 +225,7 @@
bool "ARM Ltd. Integrator family"
select ARM_AMBA
select ARCH_HAS_CPUFREQ
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ICST
select GENERIC_CLOCKEVENTS
select PLAT_VERSATILE
@@ -231,7 +235,7 @@
config ARCH_REALVIEW
bool "ARM Ltd. RealView family"
select ARM_AMBA
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ICST
select GENERIC_CLOCKEVENTS
select ARCH_WANT_OPTIONAL_GPIOLIB
@@ -245,7 +249,7 @@
bool "ARM Ltd. Versatile family"
select ARM_AMBA
select ARM_VIC
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ICST
select GENERIC_CLOCKEVENTS
select ARCH_WANT_OPTIONAL_GPIOLIB
@@ -259,7 +263,7 @@
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARM_AMBA
select ARM_TIMER_SP804
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select HAVE_CLK
select ICST
@@ -280,7 +284,7 @@
depends on MMU
select CPU_V6
select ARM_AMBA
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select ARCH_WANT_OPTIONAL_GPIOLIB
help
@@ -298,6 +302,7 @@
select CPU_V6
select GENERIC_CLOCKEVENTS
select ARM_GIC
+ select MIGHT_HAVE_PCI
select PCI_DOMAINS if PCI
help
Support for Cavium Networks CNS3XXX platform.
@@ -327,7 +332,7 @@
select CPU_ARM920T
select ARM_AMBA
select ARM_VIC
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ARCH_REQUIRE_GPIOLIB
select ARCH_HAS_HOLES_MEMORYMODEL
select ARCH_USES_GETTIMEOFFSET
@@ -347,14 +352,14 @@
bool "Freescale MXC/iMX-based"
select GENERIC_CLOCKEVENTS
select ARCH_REQUIRE_GPIOLIB
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
help
Support for Freescale MXC/iMX-based family of processors
config ARCH_STMP3XXX
bool "Freescale STMP3xxx"
select CPU_ARM926T
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
select USB_ARCH_HAS_EHCI
@@ -433,6 +438,7 @@
select CPU_XSCALE
select GENERIC_GPIO
select GENERIC_CLOCKEVENTS
+ select MIGHT_HAVE_PCI
select DMABOUNCE if PCI
help
Support for Intel's IXP4XX (XScale) family of processors.
@@ -472,7 +478,7 @@
select HAVE_IDE
select ARM_AMBA
select USB_ARCH_HAS_OHCI
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
help
@@ -506,7 +512,7 @@
bool "Marvell PXA168/910/MMP2"
depends on MMU
select ARCH_REQUIRE_GPIOLIB
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select TICK_ONESHOT
select PLAT_PXA
@@ -539,7 +545,7 @@
bool "Nuvoton W90X900 CPU"
select CPU_ARM926T
select ARCH_REQUIRE_GPIOLIB
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
help
Support for Nuvoton (Winbond logic dept.) ARM9 processor,
@@ -553,7 +559,7 @@
config ARCH_NUC93X
bool "Nuvoton NUC93X CPU"
select CPU_ARM926T
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
help
Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
low-power and high performance MPEG-4/JPEG multimedia controller chip.
@@ -564,7 +570,7 @@
select GENERIC_CLOCKEVENTS
select GENERIC_GPIO
select HAVE_CLK
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ARCH_HAS_BARRIERS if CACHE_L2X0
select ARCH_HAS_CPUFREQ
help
@@ -574,7 +580,7 @@
config ARCH_PNX4008
bool "Philips Nexperia PNX4008 Mobile"
select CPU_ARM926T
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ARCH_USES_GETTIMEOFFSET
help
This enables support for Philips PNX4008 mobile platform.
@@ -584,7 +590,7 @@
depends on MMU
select ARCH_MTD_XIP
select ARCH_HAS_CPUFREQ
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
select TICK_ONESHOT
@@ -761,7 +767,7 @@
bool "Telechips TCC ARM926-based systems"
select CPU_ARM926T
select HAVE_CLK
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
help
Support for Telechips TCC ARM926-based systems.
@@ -785,7 +791,7 @@
select ARM_AMBA
select ARM_VIC
select GENERIC_CLOCKEVENTS
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_GPIO
help
Support for ST-Ericsson U300 series mobile platforms.
@@ -795,7 +801,7 @@
select CPU_V7
select ARM_AMBA
select GENERIC_CLOCKEVENTS
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select ARCH_REQUIRE_GPIOLIB
help
Support for ST-Ericsson's Ux500 architecture
@@ -805,7 +811,7 @@
select ARM_AMBA
select ARM_VIC
select CPU_ARM926T
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select ARCH_REQUIRE_GPIOLIB
help
@@ -817,7 +823,7 @@
select ARCH_REQUIRE_GPIOLIB
select ZONE_DMA
select HAVE_IDE
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_ALLOCATOR
select ARCH_HAS_HOLES_MEMORYMODEL
help
@@ -837,7 +843,7 @@
bool "ST SPEAr"
select ARM_AMBA
select ARCH_REQUIRE_GPIOLIB
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select HAVE_CLK
help
@@ -1017,6 +1023,11 @@
default y
bool
+config MULTI_IRQ_HANDLER
+ bool
+ help
+ Allow each machine to specify it's own IRQ handler at run time.
+
if !MMU
source "arch/arm/Kconfig-nommu"
endif
@@ -1164,7 +1175,7 @@
bool
config PCI
- bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
+ bool "PCI support" if MIGHT_HAVE_PCI
help
Find out whether you have a PCI motherboard. PCI is the name of a
bus system, i.e. the way the CPU talks to the other stuff inside
@@ -1311,7 +1322,7 @@
default 100
config THUMB2_KERNEL
- bool "Compile the kernel in Thumb-2 mode"
+ bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
depends on CPU_V7 && EXPERIMENTAL
select AEABI
select ARM_ASM_UNIFIED
@@ -1525,6 +1536,7 @@
config CC_STACKPROTECTOR
bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
help
This option turns on the -fstack-protector GCC feature. This
feature puts, at the beginning of functions, a canary value on
@@ -1708,7 +1720,7 @@
Internal configuration node for common cpufreq on Samsung SoC
config CPU_FREQ_S3C24XX
- bool "CPUfreq driver for Samsung S3C24XX series CPUs"
+ bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
select CPU_FREQ_S3C
help
@@ -1720,7 +1732,7 @@
If in doubt, say N.
config CPU_FREQ_S3C24XX_PLL
- bool "Support CPUfreq changing of PLL frequency"
+ bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
help
Compile in support for changing the PLL frequency from the
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 2fd0b99..a5775a5 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -31,7 +31,7 @@
reported is severely limited.
config ARM_UNWIND
- bool "Enable stack unwinding support"
+ bool "Enable stack unwinding support (EXPERIMENTAL)"
depends on AEABI && EXPERIMENTAL
default y
help
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index 0a34c81..778655f 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -37,7 +37,3 @@
config SHARP_SCOOP
bool
-
-config COMMON_CLKDEV
- bool
- select HAVE_CLK
diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile
index e6e8664..799e140 100644
--- a/arch/arm/common/Makefile
+++ b/arch/arm/common/Makefile
@@ -16,4 +16,3 @@
obj-$(CONFIG_ARCH_IXP2000) += uengine.o
obj-$(CONFIG_ARCH_IXP23XX) += uengine.o
obj-$(CONFIG_PCI_HOST_ITE8152) += it8152.o
-obj-$(CONFIG_COMMON_CLKDEV) += clkdev.o
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index cc0a932..e568163 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -328,7 +328,7 @@
* substitute the safe buffer for the unsafe one.
* (basically move the buffer from an unsafe area to a safe one)
*/
-dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
+dma_addr_t __dma_map_single(struct device *dev, void *ptr, size_t size,
enum dma_data_direction dir)
{
dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
@@ -338,7 +338,7 @@
return map_single(dev, ptr, size, dir);
}
-EXPORT_SYMBOL(dma_map_single);
+EXPORT_SYMBOL(__dma_map_single);
/*
* see if a mapped address was really a "safe" buffer and if so, copy
@@ -346,7 +346,7 @@
* the safe buffer. (basically return things back to the way they
* should be)
*/
-void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+void __dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
enum dma_data_direction dir)
{
dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
@@ -354,9 +354,9 @@
unmap_single(dev, dma_addr, size, dir);
}
-EXPORT_SYMBOL(dma_unmap_single);
+EXPORT_SYMBOL(__dma_unmap_single);
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
+dma_addr_t __dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction dir)
{
dev_dbg(dev, "%s(page=%p,off=%#lx,size=%zx,dir=%x)\n",
@@ -372,7 +372,7 @@
return map_single(dev, page_address(page) + offset, size, dir);
}
-EXPORT_SYMBOL(dma_map_page);
+EXPORT_SYMBOL(__dma_map_page);
/*
* see if a mapped address was really a "safe" buffer and if so, copy
@@ -380,7 +380,7 @@
* the safe buffer. (basically return things back to the way they
* should be)
*/
-void dma_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size,
+void __dma_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size,
enum dma_data_direction dir)
{
dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
@@ -388,7 +388,7 @@
unmap_single(dev, dma_addr, size, dir);
}
-EXPORT_SYMBOL(dma_unmap_page);
+EXPORT_SYMBOL(__dma_unmap_page);
int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr,
unsigned long off, size_t sz, enum dma_data_direction dir)
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 72d3389..bc2d2d7 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -18,6 +18,7 @@
#endif
#include <asm/ptrace.h>
+#include <asm/domain.h>
/*
* Endian independent macros for shifting bytes within registers.
@@ -222,12 +223,12 @@
*/
#ifdef CONFIG_THUMB2_KERNEL
- .macro usraccoff, instr, reg, ptr, inc, off, cond, abort
+ .macro usraccoff, instr, reg, ptr, inc, off, cond, abort, t=T()
9999:
.if \inc == 1
- \instr\cond\()bt \reg, [\ptr, #\off]
+ \instr\cond\()b\()\t\().w \reg, [\ptr, #\off]
.elseif \inc == 4
- \instr\cond\()t \reg, [\ptr, #\off]
+ \instr\cond\()\t\().w \reg, [\ptr, #\off]
.else
.error "Unsupported inc macro argument"
.endif
@@ -262,13 +263,13 @@
#else /* !CONFIG_THUMB2_KERNEL */
- .macro usracc, instr, reg, ptr, inc, cond, rept, abort
+ .macro usracc, instr, reg, ptr, inc, cond, rept, abort, t=T()
.rept \rept
9999:
.if \inc == 1
- \instr\cond\()bt \reg, [\ptr], #\inc
+ \instr\cond\()b\()\t \reg, [\ptr], #\inc
.elseif \inc == 4
- \instr\cond\()t \reg, [\ptr], #\inc
+ \instr\cond\()\t \reg, [\ptr], #\inc
.else
.error "Unsupported inc macro argument"
.endif
diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h
index 9d61220..75fe66b 100644
--- a/arch/arm/include/asm/cache.h
+++ b/arch/arm/include/asm/cache.h
@@ -23,4 +23,6 @@
#define ARCH_SLAB_MINALIGN 8
#endif
+#define __read_mostly __attribute__((__section__(".data..read_mostly")))
+
#endif
diff --git a/arch/arm/include/asm/clkdev.h b/arch/arm/include/asm/clkdev.h
index b56c138..765d332 100644
--- a/arch/arm/include/asm/clkdev.h
+++ b/arch/arm/include/asm/clkdev.h
@@ -12,23 +12,13 @@
#ifndef __ASM_CLKDEV_H
#define __ASM_CLKDEV_H
-struct clk;
-struct device;
+#include <linux/slab.h>
-struct clk_lookup {
- struct list_head node;
- const char *dev_id;
- const char *con_id;
- struct clk *clk;
-};
+#include <mach/clkdev.h>
-struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
- const char *dev_fmt, ...);
-
-void clkdev_add(struct clk_lookup *cl);
-void clkdev_drop(struct clk_lookup *cl);
-
-void clkdev_add_table(struct clk_lookup *, size_t);
-int clk_add_alias(const char *, const char *, char *, struct device *);
+static inline struct clk_lookup_alloc *__clkdev_alloc(size_t size)
+{
+ return kzalloc(size, GFP_KERNEL);
+}
#endif
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index c568da7..4fff837 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -5,24 +5,29 @@
#include <linux/mm_types.h>
#include <linux/scatterlist.h>
+#include <linux/dma-debug.h>
#include <asm-generic/dma-coherent.h>
#include <asm/memory.h>
+#ifdef __arch_page_to_dma
+#error Please update to __arch_pfn_to_dma
+#endif
+
/*
- * page_to_dma/dma_to_virt/virt_to_dma are architecture private functions
- * used internally by the DMA-mapping API to provide DMA addresses. They
- * must not be used by drivers.
+ * dma_to_pfn/pfn_to_dma/dma_to_virt/virt_to_dma are architecture private
+ * functions used internally by the DMA-mapping API to provide DMA
+ * addresses. They must not be used by drivers.
*/
-#ifndef __arch_page_to_dma
-static inline dma_addr_t page_to_dma(struct device *dev, struct page *page)
+#ifndef __arch_pfn_to_dma
+static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
{
- return (dma_addr_t)__pfn_to_bus(page_to_pfn(page));
+ return (dma_addr_t)__pfn_to_bus(pfn);
}
-static inline struct page *dma_to_page(struct device *dev, dma_addr_t addr)
+static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
{
- return pfn_to_page(__bus_to_pfn(addr));
+ return __bus_to_pfn(addr);
}
static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
@@ -35,14 +40,14 @@
return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
}
#else
-static inline dma_addr_t page_to_dma(struct device *dev, struct page *page)
+static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
{
- return __arch_page_to_dma(dev, page);
+ return __arch_pfn_to_dma(dev, pfn);
}
-static inline struct page *dma_to_page(struct device *dev, dma_addr_t addr)
+static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
{
- return __arch_dma_to_page(dev, addr);
+ return __arch_dma_to_pfn(dev, addr);
}
static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
@@ -293,13 +298,13 @@
/*
* The DMA API, implemented by dmabounce.c. See below for descriptions.
*/
-extern dma_addr_t dma_map_single(struct device *, void *, size_t,
+extern dma_addr_t __dma_map_single(struct device *, void *, size_t,
enum dma_data_direction);
-extern void dma_unmap_single(struct device *, dma_addr_t, size_t,
+extern void __dma_unmap_single(struct device *, dma_addr_t, size_t,
enum dma_data_direction);
-extern dma_addr_t dma_map_page(struct device *, struct page *,
+extern dma_addr_t __dma_map_page(struct device *, struct page *,
unsigned long, size_t, enum dma_data_direction);
-extern void dma_unmap_page(struct device *, dma_addr_t, size_t,
+extern void __dma_unmap_page(struct device *, dma_addr_t, size_t,
enum dma_data_direction);
/*
@@ -323,6 +328,34 @@
}
+static inline dma_addr_t __dma_map_single(struct device *dev, void *cpu_addr,
+ size_t size, enum dma_data_direction dir)
+{
+ __dma_single_cpu_to_dev(cpu_addr, size, dir);
+ return virt_to_dma(dev, cpu_addr);
+}
+
+static inline dma_addr_t __dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir)
+{
+ __dma_page_cpu_to_dev(page, offset, size, dir);
+ return pfn_to_dma(dev, page_to_pfn(page)) + offset;
+}
+
+static inline void __dma_unmap_single(struct device *dev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir)
+{
+ __dma_single_dev_to_cpu(dma_to_virt(dev, handle), size, dir);
+}
+
+static inline void __dma_unmap_page(struct device *dev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir)
+{
+ __dma_page_dev_to_cpu(pfn_to_page(dma_to_pfn(dev, handle)),
+ handle & ~PAGE_MASK, size, dir);
+}
+#endif /* CONFIG_DMABOUNCE */
+
/**
* dma_map_single - map a single buffer for streaming DMA
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
@@ -340,11 +373,16 @@
static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
size_t size, enum dma_data_direction dir)
{
+ dma_addr_t addr;
+
BUG_ON(!valid_dma_direction(dir));
- __dma_single_cpu_to_dev(cpu_addr, size, dir);
+ addr = __dma_map_single(dev, cpu_addr, size, dir);
+ debug_dma_map_page(dev, virt_to_page(cpu_addr),
+ (unsigned long)cpu_addr & ~PAGE_MASK, size,
+ dir, addr, true);
- return virt_to_dma(dev, cpu_addr);
+ return addr;
}
/**
@@ -364,11 +402,14 @@
static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction dir)
{
+ dma_addr_t addr;
+
BUG_ON(!valid_dma_direction(dir));
- __dma_page_cpu_to_dev(page, offset, size, dir);
+ addr = __dma_map_page(dev, page, offset, size, dir);
+ debug_dma_map_page(dev, page, offset, size, dir, addr, false);
- return page_to_dma(dev, page) + offset;
+ return addr;
}
/**
@@ -388,7 +429,8 @@
static inline void dma_unmap_single(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir)
{
- __dma_single_dev_to_cpu(dma_to_virt(dev, handle), size, dir);
+ debug_dma_unmap_page(dev, handle, size, dir, true);
+ __dma_unmap_single(dev, handle, size, dir);
}
/**
@@ -408,10 +450,9 @@
static inline void dma_unmap_page(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir)
{
- __dma_page_dev_to_cpu(dma_to_page(dev, handle), handle & ~PAGE_MASK,
- size, dir);
+ debug_dma_unmap_page(dev, handle, size, dir, false);
+ __dma_unmap_page(dev, handle, size, dir);
}
-#endif /* CONFIG_DMABOUNCE */
/**
* dma_sync_single_range_for_cpu
@@ -437,6 +478,8 @@
{
BUG_ON(!valid_dma_direction(dir));
+ debug_dma_sync_single_for_cpu(dev, handle + offset, size, dir);
+
if (!dmabounce_sync_for_cpu(dev, handle, offset, size, dir))
return;
@@ -449,6 +492,8 @@
{
BUG_ON(!valid_dma_direction(dir));
+ debug_dma_sync_single_for_device(dev, handle + offset, size, dir);
+
if (!dmabounce_sync_for_device(dev, handle, offset, size, dir))
return;
diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h
index cc7ef40..af18cea 100644
--- a/arch/arm/include/asm/domain.h
+++ b/arch/arm/include/asm/domain.h
@@ -45,13 +45,17 @@
*/
#define DOMAIN_NOACCESS 0
#define DOMAIN_CLIENT 1
+#ifdef CONFIG_CPU_USE_DOMAINS
#define DOMAIN_MANAGER 3
+#else
+#define DOMAIN_MANAGER 1
+#endif
#define domain_val(dom,type) ((type) << (2*(dom)))
#ifndef __ASSEMBLY__
-#ifdef CONFIG_MMU
+#ifdef CONFIG_CPU_USE_DOMAINS
#define set_domain(x) \
do { \
__asm__ __volatile__( \
@@ -74,5 +78,28 @@
#define modify_domain(dom,type) do { } while (0)
#endif
+/*
+ * Generate the T (user) versions of the LDR/STR and related
+ * instructions (inline assembly)
+ */
+#ifdef CONFIG_CPU_USE_DOMAINS
+#define T(instr) #instr "t"
+#else
+#define T(instr) #instr
#endif
-#endif /* !__ASSEMBLY__ */
+
+#else /* __ASSEMBLY__ */
+
+/*
+ * Generate the T (user) versions of the LDR/STR and related
+ * instructions
+ */
+#ifdef CONFIG_CPU_USE_DOMAINS
+#define T(instr) instr ## t
+#else
+#define T(instr) instr
+#endif
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* !__ASM_PROC_DOMAIN_H */
diff --git a/arch/arm/include/asm/entry-macro-multi.S b/arch/arm/include/asm/entry-macro-multi.S
new file mode 100644
index 0000000..ec0bbf7
--- /dev/null
+++ b/arch/arm/include/asm/entry-macro-multi.S
@@ -0,0 +1,44 @@
+/*
+ * Interrupt handling. Preserves r7, r8, r9
+ */
+ .macro arch_irq_handler_default
+ get_irqnr_preamble r5, lr
+1: get_irqnr_and_base r0, r6, r5, lr
+ movne r1, sp
+ @
+ @ routine called with r0 = irq number, r1 = struct pt_regs *
+ @
+ adrne lr, BSYM(1b)
+ bne asm_do_IRQ
+
+#ifdef CONFIG_SMP
+ /*
+ * XXX
+ *
+ * this macro assumes that irqstat (r6) and base (r5) are
+ * preserved from get_irqnr_and_base above
+ */
+ ALT_SMP(test_for_ipi r0, r6, r5, lr)
+ ALT_UP_B(9997f)
+ movne r1, sp
+ adrne lr, BSYM(1b)
+ bne do_IPI
+
+#ifdef CONFIG_LOCAL_TIMERS
+ test_for_ltirq r0, r6, r5, lr
+ movne r0, sp
+ adrne lr, BSYM(1b)
+ bne do_local_timer
+#endif
+#endif
+9997:
+ .endm
+
+ .macro arch_irq_handler, symbol_name
+ .align 5
+ .global \symbol_name
+\symbol_name:
+ mov r4, lr
+ arch_irq_handler_default
+ mov pc, r4
+ .endm
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index 540a044..b33fe70 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -13,12 +13,13 @@
#include <linux/preempt.h>
#include <linux/uaccess.h>
#include <asm/errno.h>
+#include <asm/domain.h>
#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \
__asm__ __volatile__( \
- "1: ldrt %1, [%2]\n" \
+ "1: " T(ldr) " %1, [%2]\n" \
" " insn "\n" \
- "2: strt %0, [%2]\n" \
+ "2: " T(str) " %0, [%2]\n" \
" mov %0, #0\n" \
"3:\n" \
" .pushsection __ex_table,\"a\"\n" \
@@ -97,10 +98,10 @@
pagefault_disable(); /* implies preempt_disable() */
__asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n"
- "1: ldrt %0, [%3]\n"
+ "1: " T(ldr) " %0, [%3]\n"
" teq %0, %1\n"
" it eq @ explicit IT needed for the 2b label\n"
- "2: streqt %2, [%3]\n"
+ "2: " T(streq) " %2, [%3]\n"
"3:\n"
" .pushsection __ex_table,\"a\"\n"
" .align 3\n"
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index d97a964..3a0893a 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -37,12 +37,21 @@
struct meminfo *);
void (*reserve)(void);/* reserve mem blocks */
void (*map_io)(void);/* IO mapping function */
+ void (*init_early)(void);
void (*init_irq)(void);
struct sys_timer *timer; /* system tick timer */
void (*init_machine)(void);
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+ void (*handle_irq)(struct pt_regs *);
+#endif
};
/*
+ * Current machine - only accessible during boot.
+ */
+extern struct machine_desc *machine_desc;
+
+/*
* Set of macros to define architecture features. This is built into
* a table by the linker.
*/
diff --git a/arch/arm/include/asm/mach/irq.h b/arch/arm/include/asm/mach/irq.h
index 2bc47fb..22ac140 100644
--- a/arch/arm/include/asm/mach/irq.h
+++ b/arch/arm/include/asm/mach/irq.h
@@ -17,11 +17,13 @@
/*
* This is internal. Do not use it.
*/
-extern unsigned int arch_nr_irqs;
-extern void (*init_arch_irq)(void);
extern void init_FIQ(void);
extern int show_fiq_list(struct seq_file *, int);
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+extern void (*handle_arch_irq)(struct pt_regs *);
+#endif
+
/*
* This is for easy migration, but should be changed in the source
*/
diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h
index 35d408f..883f6be 100644
--- a/arch/arm/include/asm/mach/time.h
+++ b/arch/arm/include/asm/mach/time.h
@@ -43,7 +43,6 @@
#endif
};
-extern struct sys_timer *system_timer;
extern void timer_tick(void);
#endif
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 1120f18..9ab8d7e 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -119,6 +119,13 @@
#define vectors_high() (0)
#endif
+#if __LINUX_ARM_ARCH__ >= 7 || \
+ (__LINUX_ARM_ARCH__ == 6 && defined(CONFIG_CPU_32v6K))
+#define sev() __asm__ __volatile__ ("sev" : : : "memory")
+#define wfe() __asm__ __volatile__ ("wfe" : : : "memory")
+#define wfi() __asm__ __volatile__ ("wfi" : : : "memory")
+#endif
+
#if __LINUX_ARM_ARCH__ >= 7
#define isb() __asm__ __volatile__ ("isb" : : : "memory")
#define dsb() __asm__ __volatile__ ("dsb" : : : "memory")
diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h
index 491960b..af5d5d1 100644
--- a/arch/arm/include/asm/traps.h
+++ b/arch/arm/include/asm/traps.h
@@ -27,4 +27,6 @@
extern void __init early_trap_init(void);
extern void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame);
+extern void *vectors_page;
+
#endif
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 33e4a48..b293616 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -227,7 +227,7 @@
#define __get_user_asm_byte(x,addr,err) \
__asm__ __volatile__( \
- "1: ldrbt %1,[%2]\n" \
+ "1: " T(ldrb) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -263,7 +263,7 @@
#define __get_user_asm_word(x,addr,err) \
__asm__ __volatile__( \
- "1: ldrt %1,[%2]\n" \
+ "1: " T(ldr) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -308,7 +308,7 @@
#define __put_user_asm_byte(x,__pu_addr,err) \
__asm__ __volatile__( \
- "1: strbt %1,[%2]\n" \
+ "1: " T(strb) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -341,7 +341,7 @@
#define __put_user_asm_word(x,__pu_addr,err) \
__asm__ __volatile__( \
- "1: strt %1,[%2]\n" \
+ "1: " T(str) " %1,[%2],#0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
@@ -366,10 +366,10 @@
#define __put_user_asm_dword(x,__pu_addr,err) \
__asm__ __volatile__( \
- ARM( "1: strt " __reg_oper1 ", [%1], #4\n" ) \
- ARM( "2: strt " __reg_oper0 ", [%1]\n" ) \
- THUMB( "1: strt " __reg_oper1 ", [%1]\n" ) \
- THUMB( "2: strt " __reg_oper0 ", [%1, #4]\n" ) \
+ ARM( "1: " T(str) " " __reg_oper1 ", [%1], #4\n" ) \
+ ARM( "2: " T(str) " " __reg_oper0 ", [%1]\n" ) \
+ THUMB( "1: " T(str) " " __reg_oper1 ", [%1]\n" ) \
+ THUMB( "2: " T(str) " " __reg_oper0 ", [%1, #4]\n" ) \
"3:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 659937b..0e10679 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -42,6 +42,8 @@
obj-$(CONFIG_ARM_UNWIND) += unwind.o
obj-$(CONFIG_HAVE_TCM) += tcm.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
+obj-$(CONFIG_SWP_EMULATE) += swp_emulate.o
+CFLAGS_swp_emulate.o := -Wa,-march=armv7-a
obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
obj-$(CONFIG_CRUNCH) += crunch.o crunch-bits.o
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 7f22a11a..8e2dacd 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -25,42 +25,22 @@
#include <asm/tls.h>
#include "entry-header.S"
+#include <asm/entry-macro-multi.S>
/*
* Interrupt handling. Preserves r7, r8, r9
*/
.macro irq_handler
- get_irqnr_preamble r5, lr
-1: get_irqnr_and_base r0, r6, r5, lr
- movne r1, sp
- @
- @ routine called with r0 = irq number, r1 = struct pt_regs *
- @
- adrne lr, BSYM(1b)
- bne asm_do_IRQ
-
-#ifdef CONFIG_SMP
- /*
- * XXX
- *
- * this macro assumes that irqstat (r6) and base (r5) are
- * preserved from get_irqnr_and_base above
- */
- ALT_SMP(test_for_ipi r0, r6, r5, lr)
- ALT_UP_B(9997f)
- movne r1, sp
- adrne lr, BSYM(1b)
- bne do_IPI
-
-#ifdef CONFIG_LOCAL_TIMERS
- test_for_ltirq r0, r6, r5, lr
- movne r0, sp
- adrne lr, BSYM(1b)
- bne do_local_timer
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+ ldr r5, =handle_arch_irq
+ mov r0, sp
+ ldr r5, [r5]
+ adr lr, BSYM(9997f)
+ teq r5, #0
+ movne pc, r5
#endif
+ arch_irq_handler_default
9997:
-#endif
-
.endm
#ifdef CONFIG_KPROBES
@@ -735,7 +715,7 @@
THUMB( stmia ip!, {r4 - sl, fp} ) @ Store most regs on stack
THUMB( str sp, [ip], #4 )
THUMB( str lr, [ip], #4 )
-#ifdef CONFIG_MMU
+#ifdef CONFIG_CPU_USE_DOMAINS
ldr r6, [r2, #TI_CPU_DOMAIN]
#endif
set_tls r3, r4, r5
@@ -744,7 +724,7 @@
ldr r8, =__stack_chk_guard
ldr r7, [r7, #TSK_STACK_CANARY]
#endif
-#ifdef CONFIG_MMU
+#ifdef CONFIG_CPU_USE_DOMAINS
mcr p15, 0, r6, c3, c0, 0 @ Set domain register
#endif
mov r5, r0
@@ -1245,3 +1225,9 @@
.space 4
cr_no_alignment:
.space 4
+
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+ .globl handle_arch_irq
+handle_arch_irq:
+ .space 4
+#endif
diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
index 47837b8..e72dc34 100644
--- a/arch/arm/kernel/fiq.c
+++ b/arch/arm/kernel/fiq.c
@@ -45,6 +45,7 @@
#include <asm/fiq.h>
#include <asm/irq.h>
#include <asm/system.h>
+#include <asm/traps.h>
static unsigned long no_fiq_insn;
@@ -78,7 +79,11 @@
void set_fiq_handler(void *start, unsigned int length)
{
+#if defined(CONFIG_CPU_USE_DOMAINS)
memcpy((void *)0xffff001c, start, length);
+#else
+ memcpy(vectors_page + 0x1c, start, length);
+#endif
flush_icache_range(0xffff001c, 0xffff001c + length);
if (!vectors_high())
flush_icache_range(0x1c, 0x1c + length);
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 6276f01..c126994 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -37,6 +37,7 @@
#include <linux/proc_fs.h>
#include <asm/system.h>
+#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
@@ -47,8 +48,6 @@
#define irq_finish(irq) do { } while (0)
#endif
-unsigned int arch_nr_irqs;
-void (*init_arch_irq)(void) __initdata = NULL;
unsigned long irq_err_count;
int show_interrupts(struct seq_file *p, void *v)
@@ -165,13 +164,13 @@
void __init init_IRQ(void)
{
- init_arch_irq();
+ machine_desc->init_irq();
}
#ifdef CONFIG_SPARSE_IRQ
int __init arch_probe_nr_irqs(void)
{
- nr_irqs = arch_nr_irqs ? arch_nr_irqs : NR_IRQS;
+ nr_irqs = machine_desc->nr_irqs ? machine_desc->nr_irqs : NR_IRQS;
return nr_irqs;
}
#endif
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 336f14e..3455ad3 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -75,9 +75,9 @@
unsigned int processor_id;
EXPORT_SYMBOL(processor_id);
-unsigned int __machine_arch_type;
+unsigned int __machine_arch_type __read_mostly;
EXPORT_SYMBOL(__machine_arch_type);
-unsigned int cacheid;
+unsigned int cacheid __read_mostly;
EXPORT_SYMBOL(cacheid);
unsigned int __atags_pointer __initdata;
@@ -91,24 +91,24 @@
unsigned int system_serial_high;
EXPORT_SYMBOL(system_serial_high);
-unsigned int elf_hwcap;
+unsigned int elf_hwcap __read_mostly;
EXPORT_SYMBOL(elf_hwcap);
#ifdef MULTI_CPU
-struct processor processor;
+struct processor processor __read_mostly;
#endif
#ifdef MULTI_TLB
-struct cpu_tlb_fns cpu_tlb;
+struct cpu_tlb_fns cpu_tlb __read_mostly;
#endif
#ifdef MULTI_USER
-struct cpu_user_fns cpu_user;
+struct cpu_user_fns cpu_user __read_mostly;
#endif
#ifdef MULTI_CACHE
-struct cpu_cache_fns cpu_cache;
+struct cpu_cache_fns cpu_cache __read_mostly;
#endif
#ifdef CONFIG_OUTER_CACHE
-struct outer_cache_fns outer_cache;
+struct outer_cache_fns outer_cache __read_mostly;
EXPORT_SYMBOL(outer_cache);
#endif
@@ -126,6 +126,7 @@
static const char *cpu_name;
static const char *machine_name;
static char __initdata cmd_line[COMMAND_LINE_SIZE];
+struct machine_desc *machine_desc __initdata;
static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
@@ -708,13 +709,11 @@
{ 0, ATAG_NONE }
};
-static void (*init_machine)(void) __initdata;
-
static int __init customize_machine(void)
{
/* customizes platform devices, or adds new ones */
- if (init_machine)
- init_machine();
+ if (machine_desc->init_machine)
+ machine_desc->init_machine();
return 0;
}
arch_initcall(customize_machine);
@@ -809,6 +808,7 @@
setup_processor();
mdesc = setup_machine(machine_arch_type);
+ machine_desc = mdesc;
machine_name = mdesc->name;
if (mdesc->soft_reboot)
@@ -868,13 +868,9 @@
cpu_init();
tcm_init();
- /*
- * Set up various architecture-specific pointers
- */
- arch_nr_irqs = mdesc->nr_irqs;
- init_arch_irq = mdesc->init_irq;
- system_timer = mdesc->timer;
- init_machine = mdesc->init_machine;
+#ifdef CONFIG_MULTI_IRQ_HANDLER
+ handle_arch_irq = mdesc->handle_irq;
+#endif
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
@@ -884,6 +880,9 @@
#endif
#endif
early_trap_init();
+
+ if (mdesc->init_early)
+ mdesc->init_early();
}
diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c
new file mode 100644
index 0000000..7a576092
--- /dev/null
+++ b/arch/arm/kernel/swp_emulate.c
@@ -0,0 +1,267 @@
+/*
+ * linux/arch/arm/kernel/swp_emulate.c
+ *
+ * Copyright (C) 2009 ARM Limited
+ * __user_* functions adapted from include/asm/uaccess.h
+ *
+ * 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.
+ *
+ * Implements emulation of the SWP/SWPB instructions using load-exclusive and
+ * store-exclusive for processors that have them disabled (or future ones that
+ * might not implement them).
+ *
+ * Syntax of SWP{B} instruction: SWP{B}<c> <Rt>, <Rt2>, [<Rn>]
+ * Where: Rt = destination
+ * Rt2 = source
+ * Rn = address
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/sched.h>
+#include <linux/syscalls.h>
+#include <linux/perf_event.h>
+
+#include <asm/traps.h>
+#include <asm/uaccess.h>
+
+/*
+ * Error-checking SWP macros implemented using ldrex{b}/strex{b}
+ */
+#define __user_swpX_asm(data, addr, res, temp, B) \
+ __asm__ __volatile__( \
+ " mov %2, %1\n" \
+ "0: ldrex"B" %1, [%3]\n" \
+ "1: strex"B" %0, %2, [%3]\n" \
+ " cmp %0, #0\n" \
+ " movne %0, %4\n" \
+ "2:\n" \
+ " .section .fixup,\"ax\"\n" \
+ " .align 2\n" \
+ "3: mov %0, %5\n" \
+ " b 2b\n" \
+ " .previous\n" \
+ " .section __ex_table,\"a\"\n" \
+ " .align 3\n" \
+ " .long 0b, 3b\n" \
+ " .long 1b, 3b\n" \
+ " .previous" \
+ : "=&r" (res), "+r" (data), "=&r" (temp) \
+ : "r" (addr), "i" (-EAGAIN), "i" (-EFAULT) \
+ : "cc", "memory")
+
+#define __user_swp_asm(data, addr, res, temp) \
+ __user_swpX_asm(data, addr, res, temp, "")
+#define __user_swpb_asm(data, addr, res, temp) \
+ __user_swpX_asm(data, addr, res, temp, "b")
+
+/*
+ * Macros/defines for extracting register numbers from instruction.
+ */
+#define EXTRACT_REG_NUM(instruction, offset) \
+ (((instruction) & (0xf << (offset))) >> (offset))
+#define RN_OFFSET 16
+#define RT_OFFSET 12
+#define RT2_OFFSET 0
+/*
+ * Bit 22 of the instruction encoding distinguishes between
+ * the SWP and SWPB variants (bit set means SWPB).
+ */
+#define TYPE_SWPB (1 << 22)
+
+static unsigned long swpcounter;
+static unsigned long swpbcounter;
+static unsigned long abtcounter;
+static pid_t previous_pid;
+
+#ifdef CONFIG_PROC_FS
+static int proc_read_status(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ char *p = page;
+ int len;
+
+ p += sprintf(p, "Emulated SWP:\t\t%lu\n", swpcounter);
+ p += sprintf(p, "Emulated SWPB:\t\t%lu\n", swpbcounter);
+ p += sprintf(p, "Aborted SWP{B}:\t\t%lu\n", abtcounter);
+ if (previous_pid != 0)
+ p += sprintf(p, "Last process:\t\t%d\n", previous_pid);
+
+ len = (p - page) - off;
+ if (len < 0)
+ len = 0;
+
+ *eof = (len <= count) ? 1 : 0;
+ *start = page + off;
+
+ return len;
+}
+#endif
+
+/*
+ * Set up process info to signal segmentation fault - called on access error.
+ */
+static void set_segfault(struct pt_regs *regs, unsigned long addr)
+{
+ siginfo_t info;
+
+ if (find_vma(current->mm, addr) == NULL)
+ info.si_code = SEGV_MAPERR;
+ else
+ info.si_code = SEGV_ACCERR;
+
+ info.si_signo = SIGSEGV;
+ info.si_errno = 0;
+ info.si_addr = (void *) instruction_pointer(regs);
+
+ pr_debug("SWP{B} emulation: access caused memory abort!\n");
+ arm_notify_die("Illegal memory access", regs, &info, 0, 0);
+
+ abtcounter++;
+}
+
+static int emulate_swpX(unsigned int address, unsigned int *data,
+ unsigned int type)
+{
+ unsigned int res = 0;
+
+ if ((type != TYPE_SWPB) && (address & 0x3)) {
+ /* SWP to unaligned address not permitted */
+ pr_debug("SWP instruction on unaligned pointer!\n");
+ return -EFAULT;
+ }
+
+ while (1) {
+ unsigned long temp;
+
+ /*
+ * Barrier required between accessing protected resource and
+ * releasing a lock for it. Legacy code might not have done
+ * this, and we cannot determine that this is not the case
+ * being emulated, so insert always.
+ */
+ smp_mb();
+
+ if (type == TYPE_SWPB)
+ __user_swpb_asm(*data, address, res, temp);
+ else
+ __user_swp_asm(*data, address, res, temp);
+
+ if (likely(res != -EAGAIN) || signal_pending(current))
+ break;
+
+ cond_resched();
+ }
+
+ if (res == 0) {
+ /*
+ * Barrier also required between aquiring a lock for a
+ * protected resource and accessing the resource. Inserted for
+ * same reason as above.
+ */
+ smp_mb();
+
+ if (type == TYPE_SWPB)
+ swpbcounter++;
+ else
+ swpcounter++;
+ }
+
+ return res;
+}
+
+/*
+ * swp_handler logs the id of calling process, dissects the instruction, sanity
+ * checks the memory location, calls emulate_swpX for the actual operation and
+ * deals with fixup/error handling before returning
+ */
+static int swp_handler(struct pt_regs *regs, unsigned int instr)
+{
+ unsigned int address, destreg, data, type;
+ unsigned int res = 0;
+
+ perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, regs->ARM_pc);
+
+ if (current->pid != previous_pid) {
+ pr_debug("\"%s\" (%ld) uses deprecated SWP{B} instruction\n",
+ current->comm, (unsigned long)current->pid);
+ previous_pid = current->pid;
+ }
+
+ address = regs->uregs[EXTRACT_REG_NUM(instr, RN_OFFSET)];
+ data = regs->uregs[EXTRACT_REG_NUM(instr, RT2_OFFSET)];
+ destreg = EXTRACT_REG_NUM(instr, RT_OFFSET);
+
+ type = instr & TYPE_SWPB;
+
+ pr_debug("addr in r%d->0x%08x, dest is r%d, source in r%d->0x%08x)\n",
+ EXTRACT_REG_NUM(instr, RN_OFFSET), address,
+ destreg, EXTRACT_REG_NUM(instr, RT2_OFFSET), data);
+
+ /* Check access in reasonable access range for both SWP and SWPB */
+ if (!access_ok(VERIFY_WRITE, (address & ~3), 4)) {
+ pr_debug("SWP{B} emulation: access to %p not allowed!\n",
+ (void *)address);
+ res = -EFAULT;
+ } else {
+ res = emulate_swpX(address, &data, type);
+ }
+
+ if (res == 0) {
+ /*
+ * On successful emulation, revert the adjustment to the PC
+ * made in kernel/traps.c in order to resume execution at the
+ * instruction following the SWP{B}.
+ */
+ regs->ARM_pc += 4;
+ regs->uregs[destreg] = data;
+ } else if (res == -EFAULT) {
+ /*
+ * Memory errors do not mean emulation failed.
+ * Set up signal info to return SEGV, then return OK
+ */
+ set_segfault(regs, address);
+ }
+
+ return 0;
+}
+
+/*
+ * Only emulate SWP/SWPB executed in ARM state/User mode.
+ * The kernel must be SWP free and SWP{B} does not exist in Thumb/ThumbEE.
+ */
+static struct undef_hook swp_hook = {
+ .instr_mask = 0x0fb00ff0,
+ .instr_val = 0x01000090,
+ .cpsr_mask = MODE_MASK | PSR_T_BIT | PSR_J_BIT,
+ .cpsr_val = USR_MODE,
+ .fn = swp_handler
+};
+
+/*
+ * Register handler and create status file in /proc/cpu
+ * Invoked as late_initcall, since not needed before init spawned.
+ */
+static int __init swp_emulation_init(void)
+{
+#ifdef CONFIG_PROC_FS
+ struct proc_dir_entry *res;
+
+ res = create_proc_entry("cpu/swp_emulation", S_IRUGO, NULL);
+
+ if (!res)
+ return -ENOMEM;
+
+ res->read_proc = proc_read_status;
+#endif /* CONFIG_PROC_FS */
+
+ printk(KERN_NOTICE "Registering SWP/SWPB emulation handler\n");
+ register_undef_hook(&swp_hook);
+
+ return 0;
+}
+
+late_initcall(swp_emulation_init);
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 38c261f..f1e2eb1 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -30,12 +30,13 @@
#include <asm/leds.h>
#include <asm/thread_info.h>
#include <asm/stacktrace.h>
+#include <asm/mach/arch.h>
#include <asm/mach/time.h>
/*
* Our system timer.
*/
-struct sys_timer *system_timer;
+static struct sys_timer *system_timer;
#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE)
/* this needs a better home */
@@ -160,6 +161,7 @@
void __init time_init(void)
{
+ system_timer = machine_desc->timer;
system_timer->init();
}
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 446aee9..e02f4f7 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -37,6 +37,8 @@
static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" };
+void *vectors_page;
+
#ifdef CONFIG_DEBUG_USER
unsigned int user_debug;
@@ -756,7 +758,11 @@
void __init early_trap_init(void)
{
+#if defined(CONFIG_CPU_USE_DOMAINS)
unsigned long vectors = CONFIG_VECTORS_BASE;
+#else
+ unsigned long vectors = (unsigned long)vectors_page;
+#endif
extern char __stubs_start[], __stubs_end[];
extern char __vectors_start[], __vectors_end[];
extern char __kuser_helper_start[], __kuser_helper_end[];
@@ -780,10 +786,10 @@
* Copy signal return handlers into the vector page, and
* set sigreturn to be a pointer to these.
*/
- memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes,
- sizeof(sigreturn_codes));
- memcpy((void *)KERN_RESTART_CODE, syscall_restart_code,
- sizeof(syscall_restart_code));
+ memcpy((void *)(vectors + KERN_SIGRETURN_CODE - CONFIG_VECTORS_BASE),
+ sigreturn_codes, sizeof(sigreturn_codes));
+ memcpy((void *)(vectors + KERN_RESTART_CODE - CONFIG_VECTORS_BASE),
+ syscall_restart_code, sizeof(syscall_restart_code));
flush_icache_range(vectors, vectors + PAGE_SIZE);
modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index cead889..1581f6d 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -167,6 +167,7 @@
NOSAVE_DATA
CACHELINE_ALIGNED_DATA(32)
+ READ_MOSTLY_DATA(32)
/*
* The exception fixup table (might need resorting at runtime)
diff --git a/arch/arm/lib/getuser.S b/arch/arm/lib/getuser.S
index b1631a7..1b049cd 100644
--- a/arch/arm/lib/getuser.S
+++ b/arch/arm/lib/getuser.S
@@ -28,20 +28,21 @@
*/
#include <linux/linkage.h>
#include <asm/errno.h>
+#include <asm/domain.h>
ENTRY(__get_user_1)
-1: ldrbt r2, [r0]
+1: T(ldrb) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__get_user_1)
ENTRY(__get_user_2)
#ifdef CONFIG_THUMB2_KERNEL
-2: ldrbt r2, [r0]
-3: ldrbt r3, [r0, #1]
+2: T(ldrb) r2, [r0]
+3: T(ldrb) r3, [r0, #1]
#else
-2: ldrbt r2, [r0], #1
-3: ldrbt r3, [r0]
+2: T(ldrb) r2, [r0], #1
+3: T(ldrb) r3, [r0]
#endif
#ifndef __ARMEB__
orr r2, r2, r3, lsl #8
@@ -53,7 +54,7 @@
ENDPROC(__get_user_2)
ENTRY(__get_user_4)
-4: ldrt r2, [r0]
+4: T(ldr) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__get_user_4)
diff --git a/arch/arm/lib/putuser.S b/arch/arm/lib/putuser.S
index 5a01a23..c023fc1 100644
--- a/arch/arm/lib/putuser.S
+++ b/arch/arm/lib/putuser.S
@@ -28,9 +28,10 @@
*/
#include <linux/linkage.h>
#include <asm/errno.h>
+#include <asm/domain.h>
ENTRY(__put_user_1)
-1: strbt r2, [r0]
+1: T(strb) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__put_user_1)
@@ -39,19 +40,19 @@
mov ip, r2, lsr #8
#ifdef CONFIG_THUMB2_KERNEL
#ifndef __ARMEB__
-2: strbt r2, [r0]
-3: strbt ip, [r0, #1]
+2: T(strb) r2, [r0]
+3: T(strb) ip, [r0, #1]
#else
-2: strbt ip, [r0]
-3: strbt r2, [r0, #1]
+2: T(strb) ip, [r0]
+3: T(strb) r2, [r0, #1]
#endif
#else /* !CONFIG_THUMB2_KERNEL */
#ifndef __ARMEB__
-2: strbt r2, [r0], #1
-3: strbt ip, [r0]
+2: T(strb) r2, [r0], #1
+3: T(strb) ip, [r0]
#else
-2: strbt ip, [r0], #1
-3: strbt r2, [r0]
+2: T(strb) ip, [r0], #1
+3: T(strb) r2, [r0]
#endif
#endif /* CONFIG_THUMB2_KERNEL */
mov r0, #0
@@ -59,18 +60,18 @@
ENDPROC(__put_user_2)
ENTRY(__put_user_4)
-4: strt r2, [r0]
+4: T(str) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__put_user_4)
ENTRY(__put_user_8)
#ifdef CONFIG_THUMB2_KERNEL
-5: strt r2, [r0]
-6: strt r3, [r0, #4]
+5: T(str) r2, [r0]
+6: T(str) r3, [r0, #4]
#else
-5: strt r2, [r0], #4
-6: strt r3, [r0]
+5: T(str) r2, [r0], #4
+6: T(str) r3, [r0]
#endif
mov r0, #0
mov pc, lr
diff --git a/arch/arm/lib/uaccess.S b/arch/arm/lib/uaccess.S
index fee9f6f..d0ece2a 100644
--- a/arch/arm/lib/uaccess.S
+++ b/arch/arm/lib/uaccess.S
@@ -14,6 +14,7 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/errno.h>
+#include <asm/domain.h>
.text
@@ -31,11 +32,11 @@
rsb ip, ip, #4
cmp ip, #2
ldrb r3, [r1], #1
-USER( strbt r3, [r0], #1) @ May fault
+USER( T(strb) r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
-USER( strgebt r3, [r0], #1) @ May fault
+USER( T(strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #1
-USER( strgtbt r3, [r0], #1) @ May fault
+USER( T(strgtb) r3, [r0], #1) @ May fault
sub r2, r2, ip
b .Lc2u_dest_aligned
@@ -58,7 +59,7 @@
addmi ip, r2, #4
bmi .Lc2u_0nowords
ldr r3, [r1], #4
-USER( strt r3, [r0], #4) @ May fault
+USER( T(str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -87,18 +88,18 @@
stmneia r0!, {r3 - r4} @ Shouldnt fault
tst ip, #4
ldrne r3, [r1], #4
- strnet r3, [r0], #4 @ Shouldnt fault
+ T(strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_0fupi
.Lc2u_0nowords: teq ip, #0
beq .Lc2u_finished
.Lc2u_nowords: cmp ip, #2
ldrb r3, [r1], #1
-USER( strbt r3, [r0], #1) @ May fault
+USER( T(strb) r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
-USER( strgebt r3, [r0], #1) @ May fault
+USER( T(strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #1
-USER( strgtbt r3, [r0], #1) @ May fault
+USER( T(strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
.Lc2u_not_enough:
@@ -119,7 +120,7 @@
mov r3, r7, pull #8
ldr r7, [r1], #4
orr r3, r3, r7, push #24
-USER( strt r3, [r0], #4) @ May fault
+USER( T(str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -154,18 +155,18 @@
movne r3, r7, pull #8
ldrne r7, [r1], #4
orrne r3, r3, r7, push #24
- strnet r3, [r0], #4 @ Shouldnt fault
+ T(strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_1fupi
.Lc2u_1nowords: mov r3, r7, get_byte_1
teq ip, #0
beq .Lc2u_finished
cmp ip, #2
-USER( strbt r3, [r0], #1) @ May fault
+USER( T(strb) r3, [r0], #1) @ May fault
movge r3, r7, get_byte_2
-USER( strgebt r3, [r0], #1) @ May fault
+USER( T(strgeb) r3, [r0], #1) @ May fault
movgt r3, r7, get_byte_3
-USER( strgtbt r3, [r0], #1) @ May fault
+USER( T(strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
.Lc2u_2fupi: subs r2, r2, #4
@@ -174,7 +175,7 @@
mov r3, r7, pull #16
ldr r7, [r1], #4
orr r3, r3, r7, push #16
-USER( strt r3, [r0], #4) @ May fault
+USER( T(str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -209,18 +210,18 @@
movne r3, r7, pull #16
ldrne r7, [r1], #4
orrne r3, r3, r7, push #16
- strnet r3, [r0], #4 @ Shouldnt fault
+ T(strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_2fupi
.Lc2u_2nowords: mov r3, r7, get_byte_2
teq ip, #0
beq .Lc2u_finished
cmp ip, #2
-USER( strbt r3, [r0], #1) @ May fault
+USER( T(strb) r3, [r0], #1) @ May fault
movge r3, r7, get_byte_3
-USER( strgebt r3, [r0], #1) @ May fault
+USER( T(strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #0
-USER( strgtbt r3, [r0], #1) @ May fault
+USER( T(strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
.Lc2u_3fupi: subs r2, r2, #4
@@ -229,7 +230,7 @@
mov r3, r7, pull #24
ldr r7, [r1], #4
orr r3, r3, r7, push #8
-USER( strt r3, [r0], #4) @ May fault
+USER( T(str) r3, [r0], #4) @ May fault
mov ip, r0, lsl #32 - PAGE_SHIFT
rsb ip, ip, #0
movs ip, ip, lsr #32 - PAGE_SHIFT
@@ -264,18 +265,18 @@
movne r3, r7, pull #24
ldrne r7, [r1], #4
orrne r3, r3, r7, push #8
- strnet r3, [r0], #4 @ Shouldnt fault
+ T(strne) r3, [r0], #4 @ Shouldnt fault
ands ip, ip, #3
beq .Lc2u_3fupi
.Lc2u_3nowords: mov r3, r7, get_byte_3
teq ip, #0
beq .Lc2u_finished
cmp ip, #2
-USER( strbt r3, [r0], #1) @ May fault
+USER( T(strb) r3, [r0], #1) @ May fault
ldrgeb r3, [r1], #1
-USER( strgebt r3, [r0], #1) @ May fault
+USER( T(strgeb) r3, [r0], #1) @ May fault
ldrgtb r3, [r1], #0
-USER( strgtbt r3, [r0], #1) @ May fault
+USER( T(strgtb) r3, [r0], #1) @ May fault
b .Lc2u_finished
ENDPROC(__copy_to_user)
@@ -294,11 +295,11 @@
.Lcfu_dest_not_aligned:
rsb ip, ip, #4
cmp ip, #2
-USER( ldrbt r3, [r1], #1) @ May fault
+USER( T(ldrb) r3, [r1], #1) @ May fault
strb r3, [r0], #1
-USER( ldrgebt r3, [r1], #1) @ May fault
+USER( T(ldrgeb) r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
-USER( ldrgtbt r3, [r1], #1) @ May fault
+USER( T(ldrgtb) r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
sub r2, r2, ip
b .Lcfu_dest_aligned
@@ -321,7 +322,7 @@
.Lcfu_0fupi: subs r2, r2, #4
addmi ip, r2, #4
bmi .Lcfu_0nowords
-USER( ldrt r3, [r1], #4)
+USER( T(ldr) r3, [r1], #4)
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
rsb ip, ip, #0
@@ -350,18 +351,18 @@
ldmneia r1!, {r3 - r4} @ Shouldnt fault
stmneia r0!, {r3 - r4}
tst ip, #4
- ldrnet r3, [r1], #4 @ Shouldnt fault
+ T(ldrne) r3, [r1], #4 @ Shouldnt fault
strne r3, [r0], #4
ands ip, ip, #3
beq .Lcfu_0fupi
.Lcfu_0nowords: teq ip, #0
beq .Lcfu_finished
.Lcfu_nowords: cmp ip, #2
-USER( ldrbt r3, [r1], #1) @ May fault
+USER( T(ldrb) r3, [r1], #1) @ May fault
strb r3, [r0], #1
-USER( ldrgebt r3, [r1], #1) @ May fault
+USER( T(ldrgeb) r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
-USER( ldrgtbt r3, [r1], #1) @ May fault
+USER( T(ldrgtb) r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
b .Lcfu_finished
@@ -374,7 +375,7 @@
.Lcfu_src_not_aligned:
bic r1, r1, #3
-USER( ldrt r7, [r1], #4) @ May fault
+USER( T(ldr) r7, [r1], #4) @ May fault
cmp ip, #2
bgt .Lcfu_3fupi
beq .Lcfu_2fupi
@@ -382,7 +383,7 @@
addmi ip, r2, #4
bmi .Lcfu_1nowords
mov r3, r7, pull #8
-USER( ldrt r7, [r1], #4) @ May fault
+USER( T(ldr) r7, [r1], #4) @ May fault
orr r3, r3, r7, push #24
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT
@@ -417,7 +418,7 @@
stmneia r0!, {r3 - r4}
tst ip, #4
movne r3, r7, pull #8
-USER( ldrnet r7, [r1], #4) @ May fault
+USER( T(ldrne) r7, [r1], #4) @ May fault
orrne r3, r3, r7, push #24
strne r3, [r0], #4
ands ip, ip, #3
@@ -437,7 +438,7 @@
addmi ip, r2, #4
bmi .Lcfu_2nowords
mov r3, r7, pull #16
-USER( ldrt r7, [r1], #4) @ May fault
+USER( T(ldr) r7, [r1], #4) @ May fault
orr r3, r3, r7, push #16
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT
@@ -473,7 +474,7 @@
stmneia r0!, {r3 - r4}
tst ip, #4
movne r3, r7, pull #16
-USER( ldrnet r7, [r1], #4) @ May fault
+USER( T(ldrne) r7, [r1], #4) @ May fault
orrne r3, r3, r7, push #16
strne r3, [r0], #4
ands ip, ip, #3
@@ -485,7 +486,7 @@
strb r3, [r0], #1
movge r3, r7, get_byte_3
strgeb r3, [r0], #1
-USER( ldrgtbt r3, [r1], #0) @ May fault
+USER( T(ldrgtb) r3, [r1], #0) @ May fault
strgtb r3, [r0], #1
b .Lcfu_finished
@@ -493,7 +494,7 @@
addmi ip, r2, #4
bmi .Lcfu_3nowords
mov r3, r7, pull #24
-USER( ldrt r7, [r1], #4) @ May fault
+USER( T(ldr) r7, [r1], #4) @ May fault
orr r3, r3, r7, push #8
str r3, [r0], #4
mov ip, r1, lsl #32 - PAGE_SHIFT
@@ -528,7 +529,7 @@
stmneia r0!, {r3 - r4}
tst ip, #4
movne r3, r7, pull #24
-USER( ldrnet r7, [r1], #4) @ May fault
+USER( T(ldrne) r7, [r1], #4) @ May fault
orrne r3, r3, r7, push #8
strne r3, [r0], #4
ands ip, ip, #3
@@ -538,9 +539,9 @@
beq .Lcfu_finished
cmp ip, #2
strb r3, [r0], #1
-USER( ldrgebt r3, [r1], #1) @ May fault
+USER( T(ldrgeb) r3, [r1], #1) @ May fault
strgeb r3, [r0], #1
-USER( ldrgtbt r3, [r1], #1) @ May fault
+USER( T(ldrgtb) r3, [r1], #1) @ May fault
strgtb r3, [r0], #1
b .Lcfu_finished
ENDPROC(__copy_from_user)
diff --git a/arch/arm/mach-bcmring/clock.c b/arch/arm/mach-bcmring/clock.c
index 14bafc3..ad237a4 100644
--- a/arch/arm/mach-bcmring/clock.c
+++ b/arch/arm/mach-bcmring/clock.c
@@ -21,13 +21,12 @@
#include <linux/string.h>
#include <linux/clk.h>
#include <linux/spinlock.h>
+#include <linux/clkdev.h>
#include <mach/csp/hw_cfg.h>
#include <mach/csp/chipcHw_def.h>
#include <mach/csp/chipcHw_reg.h>
#include <mach/csp/chipcHw_inline.h>
-#include <asm/clkdev.h>
-
#include "clock.h"
#define clk_is_primary(x) ((x)->type & CLK_TYPE_PRIMARY)
diff --git a/arch/arm/mach-bcmring/core.c b/arch/arm/mach-bcmring/core.c
index d3f959e..ed96ef4 100644
--- a/arch/arm/mach-bcmring/core.c
+++ b/arch/arm/mach-bcmring/core.c
@@ -30,10 +30,10 @@
#include <linux/amba/bus.h>
#include <linux/clocksource.h>
#include <linux/clockchips.h>
+#include <linux/clkdev.h>
#include <mach/csp/mm_addr.h>
#include <mach/hardware.h>
-#include <asm/clkdev.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/hardware/arm_timer.h>
diff --git a/arch/arm/mach-cns3xxx/Kconfig b/arch/arm/mach-cns3xxx/Kconfig
index 9ebfcc4..29b13f2 100644
--- a/arch/arm/mach-cns3xxx/Kconfig
+++ b/arch/arm/mach-cns3xxx/Kconfig
@@ -3,6 +3,7 @@
config MACH_CNS3420VB
bool "Support for CNS3420 Validation Board"
+ select MIGHT_HAVE_PCI
help
Include support for the Cavium Networks CNS3420 MPCore Platform
Baseboard.
diff --git a/arch/arm/mach-davinci/clock.h b/arch/arm/mach-davinci/clock.h
index 1109998..0dd2203 100644
--- a/arch/arm/mach-davinci/clock.h
+++ b/arch/arm/mach-davinci/clock.h
@@ -68,7 +68,7 @@
#ifndef __ASSEMBLER__
#include <linux/list.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#define PLLSTAT_GOSTAT BIT(0)
#define PLLCMD_GOSET BIT(0)
diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c
index ef06c66..ca4de71 100644
--- a/arch/arm/mach-ep93xx/clock.c
+++ b/arch/arm/mach-ep93xx/clock.c
@@ -19,10 +19,10 @@
#include <linux/string.h>
#include <linux/io.h>
#include <linux/spinlock.h>
+#include <linux/clkdev.h>
#include <mach/hardware.h>
-#include <asm/clkdev.h>
#include <asm/div64.h>
diff --git a/arch/arm/mach-imx/clock-imx1.c b/arch/arm/mach-imx/clock-imx1.c
index daca30b..3938a56 100644
--- a/arch/arm/mach-imx/clock-imx1.c
+++ b/arch/arm/mach-imx/clock-imx1.c
@@ -22,8 +22,7 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
-
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/hardware.h>
diff --git a/arch/arm/mach-imx/clock-imx21.c b/arch/arm/mach-imx/clock-imx21.c
index cf15ea5..d705655 100644
--- a/arch/arm/mach-imx/clock-imx21.c
+++ b/arch/arm/mach-imx/clock-imx21.c
@@ -21,11 +21,11 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/hardware.h>
#include <mach/common.h>
-#include <asm/clkdev.h>
#include <asm/div64.h>
#define IO_ADDR_CCM(off) (MX21_IO_ADDRESS(MX21_CCM_BASE_ADDR + (off)))
diff --git a/arch/arm/mach-imx/clock-imx27.c b/arch/arm/mach-imx/clock-imx27.c
index 98a25ba..ca1017b 100644
--- a/arch/arm/mach-imx/clock-imx27.c
+++ b/arch/arm/mach-imx/clock-imx27.c
@@ -21,8 +21,8 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <asm/div64.h>
#include <mach/clock.h>
diff --git a/arch/arm/mach-integrator/Kconfig b/arch/arm/mach-integrator/Kconfig
index 27db275..769b0f1 100644
--- a/arch/arm/mach-integrator/Kconfig
+++ b/arch/arm/mach-integrator/Kconfig
@@ -4,6 +4,7 @@
config ARCH_INTEGRATOR_AP
bool "Support Integrator/AP and Integrator/PP2 platforms"
+ select MIGHT_HAVE_PCI
help
Include support for the ARM(R) Integrator/AP and
Integrator/PP2 platforms.
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
index 8f4fb6d..b8e884b 100644
--- a/arch/arm/mach-integrator/core.c
+++ b/arch/arm/mach-integrator/core.c
@@ -21,9 +21,8 @@
#include <linux/amba/bus.h>
#include <linux/amba/serial.h>
#include <linux/io.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
-#include <mach/clkdev.h>
#include <mach/hardware.h>
#include <mach/platform.h>
#include <asm/irq.h>
diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
index fd684bf..5db574f 100644
--- a/arch/arm/mach-integrator/impd1.c
+++ b/arch/arm/mach-integrator/impd1.c
@@ -22,9 +22,8 @@
#include <linux/amba/clcd.h>
#include <linux/io.h>
#include <linux/slab.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
-#include <mach/clkdev.h>
#include <asm/hardware/icst.h>
#include <mach/lm.h>
#include <mach/impd1.h>
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 6258c90..9403d2f 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -21,9 +21,8 @@
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <linux/gfp.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
-#include <mach/clkdev.h>
#include <mach/hardware.h>
#include <mach/platform.h>
#include <asm/irq.h>
diff --git a/arch/arm/mach-iop13xx/include/mach/memory.h b/arch/arm/mach-iop13xx/include/mach/memory.h
index 7415e43..3ad4553 100644
--- a/arch/arm/mach-iop13xx/include/mach/memory.h
+++ b/arch/arm/mach-iop13xx/include/mach/memory.h
@@ -58,13 +58,13 @@
__dma; \
})
-#define __arch_page_to_dma(dev, page) \
+#define __arch_pfn_to_dma(dev, pfn) \
({ \
/* __is_lbus_virt() can never be true for RAM pages */ \
- (dma_addr_t)page_to_phys(page); \
+ (dma_addr_t)__pfn_to_phys(pfn); \
})
-#define __arch_dma_to_page(dev, addr) phys_to_page(addr)
+#define __arch_dma_to_pfn(dev, addr) __phys_to_pfn(addr)
#endif /* CONFIG_ARCH_IOP13XX */
#endif /* !ASSEMBLY */
diff --git a/arch/arm/mach-ks8695/Kconfig b/arch/arm/mach-ks8695/Kconfig
index fe0c82e..f5c39a8 100644
--- a/arch/arm/mach-ks8695/Kconfig
+++ b/arch/arm/mach-ks8695/Kconfig
@@ -4,6 +4,7 @@
config MACH_KS8695
bool "KS8695 development board"
+ select MIGHT_HAVE_PCI
help
Say 'Y' here if you want your kernel to run on the original
Kendin-Micrel KS8695 development board.
diff --git a/arch/arm/mach-ks8695/include/mach/memory.h b/arch/arm/mach-ks8695/include/mach/memory.h
index ffa19aa..bace9a6 100644
--- a/arch/arm/mach-ks8695/include/mach/memory.h
+++ b/arch/arm/mach-ks8695/include/mach/memory.h
@@ -35,17 +35,17 @@
__phys_to_virt(x) : __bus_to_virt(x)); })
#define __arch_virt_to_dma(dev, x) ({ is_lbus_device(dev) ? \
(dma_addr_t)__virt_to_phys(x) : (dma_addr_t)__virt_to_bus(x); })
-#define __arch_page_to_dma(dev, x) \
- ({ dma_addr_t __dma = page_to_phys(page); \
+#define __arch_pfn_to_dma(dev, pfn) \
+ ({ dma_addr_t __dma = __pfn_to_phys(pfn); \
if (!is_lbus_device(dev)) \
__dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \
__dma; })
-#define __arch_dma_to_page(dev, x) \
+#define __arch_dma_to_pfn(dev, x) \
({ dma_addr_t __dma = x; \
if (!is_lbus_device(dev)) \
__dma += PHYS_OFFSET - KS8695_PCIMEM_PA; \
- phys_to_page(__dma); \
+ __phys_to_pfn(__dma); \
})
#endif
diff --git a/arch/arm/mach-lpc32xx/clock.c b/arch/arm/mach-lpc32xx/clock.c
index 32d6379..da0e649 100644
--- a/arch/arm/mach-lpc32xx/clock.c
+++ b/arch/arm/mach-lpc32xx/clock.c
@@ -90,10 +90,9 @@
#include <linux/clk.h>
#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
+#include <linux/clkdev.h>
#include <mach/hardware.h>
-#include <asm/clkdev.h>
-#include <mach/clkdev.h>
#include <mach/platform.h>
#include "clock.h"
#include "common.h"
diff --git a/arch/arm/mach-mmp/clock.h b/arch/arm/mach-mmp/clock.h
index 016ae94..9b027d7 100644
--- a/arch/arm/mach-mmp/clock.h
+++ b/arch/arm/mach-mmp/clock.h
@@ -6,7 +6,7 @@
* published by the Free Software Foundation.
*/
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
struct clkops {
void (*enable)(struct clk *);
diff --git a/arch/arm/mach-mx25/clock.c b/arch/arm/mach-mx25/clock.c
index 9e4a557..00dcb08 100644
--- a/arch/arm/mach-mx25/clock.c
+++ b/arch/arm/mach-mx25/clock.c
@@ -21,8 +21,7 @@
#include <linux/list.h>
#include <linux/clk.h>
#include <linux/io.h>
-
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/hardware.h>
diff --git a/arch/arm/mach-mx3/clock-imx31.c b/arch/arm/mach-mx3/clock-imx31.c
index 109e98f..1cd8b40 100644
--- a/arch/arm/mach-mx3/clock-imx31.c
+++ b/arch/arm/mach-mx3/clock-imx31.c
@@ -23,8 +23,8 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <asm/div64.h>
#include <mach/clock.h>
diff --git a/arch/arm/mach-mx3/clock-imx35.c b/arch/arm/mach-mx3/clock-imx35.c
index 61e4a31..819dd80 100644
--- a/arch/arm/mach-mx3/clock-imx35.c
+++ b/arch/arm/mach-mx3/clock-imx35.c
@@ -21,8 +21,7 @@
#include <linux/list.h>
#include <linux/clk.h>
#include <linux/io.h>
-
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/hardware.h>
diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
index 8ac36d8..5975edb 100644
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ b/arch/arm/mach-mx5/clock-mx51.c
@@ -14,8 +14,8 @@
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/io.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <asm/div64.h>
#include <mach/hardware.h>
diff --git a/arch/arm/mach-mxc91231/clock.c b/arch/arm/mach-mxc91231/clock.c
index 5c85075..9fab505 100644
--- a/arch/arm/mach-mxc91231/clock.c
+++ b/arch/arm/mach-mxc91231/clock.c
@@ -2,12 +2,12 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/hardware.h>
#include <mach/common.h>
-#include <asm/clkdev.h>
#include <asm/bug.h>
#include <asm/div64.h>
diff --git a/arch/arm/mach-nomadik/clock.c b/arch/arm/mach-nomadik/clock.c
index 89f793a..48a59f2 100644
--- a/arch/arm/mach-nomadik/clock.c
+++ b/arch/arm/mach-nomadik/clock.c
@@ -7,7 +7,7 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/clk.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include "clock.h"
/*
diff --git a/arch/arm/mach-nuc93x/clock.h b/arch/arm/mach-nuc93x/clock.h
index 18e51be..4de1f1d 100644
--- a/arch/arm/mach-nuc93x/clock.h
+++ b/arch/arm/mach-nuc93x/clock.h
@@ -10,7 +10,7 @@
* the Free Software Foundation; either version 2 of the License.
*/
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
void nuc93x_clk_enable(struct clk *clk, int enable);
void clks_register(struct clk_lookup *clks, size_t num);
diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index b8c7fb9..84ef704 100644
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -17,9 +17,9 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
+#include <linux/clkdev.h>
#include <asm/mach-types.h>
-#include <asm/clkdev.h>
#include <plat/cpu.h>
#include <plat/usb.h>
diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index ed8d330..ebb888f 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -26,10 +26,10 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/bitops.h>
+#include <linux/clkdev.h>
#include <plat/cpu.h>
#include <plat/clock.h>
-#include <asm/clkdev.h>
#include "clock.h"
#include "prm.h"
diff --git a/arch/arm/mach-pnx4008/clock.c b/arch/arm/mach-pnx4008/clock.c
index 9d1975f..a4a3819 100644
--- a/arch/arm/mach-pnx4008/clock.c
+++ b/arch/arm/mach-pnx4008/clock.c
@@ -21,8 +21,7 @@
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/io.h>
-
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <mach/hardware.h>
#include <mach/clock.h>
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index dd235ec..716a2e1 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -94,6 +94,7 @@
select PXA27x
select IWMMXT
select PXA25x
+ select MIGHT_HAVE_PCI
config MACH_EM_X270
bool "CompuLab EM-x270 platform"
diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c
index abba008..4e4a84b 100644
--- a/arch/arm/mach-pxa/clock.c
+++ b/arch/arm/mach-pxa/clock.c
@@ -11,8 +11,8 @@
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <mach/pxa2xx-regs.h>
#include <mach/hardware.h>
diff --git a/arch/arm/mach-pxa/clock.h b/arch/arm/mach-pxa/clock.h
index d848874..12cc0e8 100644
--- a/arch/arm/mach-pxa/clock.h
+++ b/arch/arm/mach-pxa/clock.h
@@ -1,4 +1,4 @@
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
struct clkops {
void (*enable)(struct clk *);
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 07c0815..3d915b1 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -30,8 +30,8 @@
#include <linux/ata_platform.h>
#include <linux/amba/mmci.h>
#include <linux/gfp.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <asm/system.h>
#include <mach/hardware.h>
#include <asm/irq.h>
@@ -47,7 +47,6 @@
#include <asm/hardware/gic.h>
-#include <mach/clkdev.h>
#include <mach/platform.h>
#include <mach/irqs.h>
#include <plat/timer-sp.h>
diff --git a/arch/arm/mach-s3c2412/Kconfig b/arch/arm/mach-s3c2412/Kconfig
index cef6a65..e824a85 100644
--- a/arch/arm/mach-s3c2412/Kconfig
+++ b/arch/arm/mach-s3c2412/Kconfig
@@ -52,7 +52,7 @@
Say Y here if you are using the Logitech Jive.
config MACH_JIVE_SHOW_BOOTLOADER
- bool "Allow access to bootloader partitions in MTD"
+ bool "Allow access to bootloader partitions in MTD (EXPERIMENTAL)"
depends on MACH_JIVE && EXPERIMENTAL
config MACH_SMDK2413
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 51dcd59..6329333 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -6,7 +6,7 @@
bool "SH-Mobile G3 (SH7367)"
select CPU_V6
select HAVE_CLK
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select SH_CLK_CPG
select GENERIC_CLOCKEVENTS
@@ -14,7 +14,7 @@
bool "SH-Mobile G4 (SH7377)"
select CPU_V7
select HAVE_CLK
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select SH_CLK_CPG
select GENERIC_CLOCKEVENTS
@@ -22,7 +22,7 @@
bool "SH-Mobile AP4 (SH7372)"
select CPU_V7
select HAVE_CLK
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
select SH_CLK_CPG
select GENERIC_CLOCKEVENTS
diff --git a/arch/arm/mach-shmobile/clock-sh7367.c b/arch/arm/mach-shmobile/clock-sh7367.c
index 9f78729..6b186ae 100644
--- a/arch/arm/mach-shmobile/clock-sh7367.c
+++ b/arch/arm/mach-shmobile/clock-sh7367.c
@@ -20,8 +20,8 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/sh_clk.h>
+#include <linux/clkdev.h>
#include <mach/common.h>
-#include <asm/clkdev.h>
/* SH7367 registers */
#define RTFRQCR 0xe6150000
diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c
index 3aa0260..d98deb4 100644
--- a/arch/arm/mach-shmobile/clock-sh7372.c
+++ b/arch/arm/mach-shmobile/clock-sh7372.c
@@ -20,8 +20,8 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/sh_clk.h>
+#include <linux/clkdev.h>
#include <mach/common.h>
-#include <asm/clkdev.h>
/* SH7372 registers */
#define FRQCRA 0xe6150000
diff --git a/arch/arm/mach-shmobile/clock-sh7377.c b/arch/arm/mach-shmobile/clock-sh7377.c
index f91395a..9594246 100644
--- a/arch/arm/mach-shmobile/clock-sh7377.c
+++ b/arch/arm/mach-shmobile/clock-sh7377.c
@@ -20,8 +20,8 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/sh_clk.h>
+#include <linux/clkdev.h>
#include <mach/common.h>
-#include <asm/clkdev.h>
/* SH7377 registers */
#define RTFRQCR 0xe6150000
diff --git a/arch/arm/mach-tcc8k/clock.c b/arch/arm/mach-tcc8k/clock.c
index ba32a15..3970a9c 100644
--- a/arch/arm/mach-tcc8k/clock.c
+++ b/arch/arm/mach-tcc8k/clock.c
@@ -12,8 +12,7 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/spinlock.h>
-
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/irqs.h>
diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c
index ae19f95..77948e0 100644
--- a/arch/arm/mach-tegra/clock.c
+++ b/arch/arm/mach-tegra/clock.c
@@ -25,7 +25,7 @@
#include <linux/slab.h>
#include <linux/seq_file.h>
#include <linux/regulator/consumer.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include "clock.h"
#include "board.h"
diff --git a/arch/arm/mach-tegra/clock.h b/arch/arm/mach-tegra/clock.h
index 94fd859..083a4cf 100644
--- a/arch/arm/mach-tegra/clock.h
+++ b/arch/arm/mach-tegra/clock.h
@@ -21,7 +21,7 @@
#define __MACH_TEGRA_CLOCK_H
#include <linux/list.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#define DIV_BUS (1 << 0)
#define DIV_U71 (1 << 1)
diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c
index ae3b308..f0dae6d 100644
--- a/arch/arm/mach-tegra/tegra2_clocks.c
+++ b/arch/arm/mach-tegra/tegra2_clocks.c
@@ -24,8 +24,7 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/hrtimer.h>
-
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <mach/iomap.h>
diff --git a/arch/arm/mach-u300/clock.c b/arch/arm/mach-u300/clock.c
index 7458fc6..fabcc49 100644
--- a/arch/arm/mach-u300/clock.c
+++ b/arch/arm/mach-u300/clock.c
@@ -25,8 +25,8 @@
#include <linux/timer.h>
#include <linux/io.h>
#include <linux/seq_file.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <mach/hardware.h>
#include <mach/syscon.h>
diff --git a/arch/arm/mach-ux500/clock.c b/arch/arm/mach-ux500/clock.c
index 1675047..531de5c 100644
--- a/arch/arm/mach-ux500/clock.c
+++ b/arch/arm/mach-ux500/clock.c
@@ -13,8 +13,7 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
-
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <plat/mtu.h>
#include <mach/hardware.h>
diff --git a/arch/arm/mach-versatile/Kconfig b/arch/arm/mach-versatile/Kconfig
index c781f30..3f7b5e9 100644
--- a/arch/arm/mach-versatile/Kconfig
+++ b/arch/arm/mach-versatile/Kconfig
@@ -4,6 +4,7 @@
config ARCH_VERSATILE_PB
bool "Support Versatile/PB platform"
select CPU_ARM926T
+ select MIGHT_HAVE_PCI
default y
help
Include support for the ARM(R) Versatile/PB platform.
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index e38acb0..8c1ca1d 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -31,8 +31,8 @@
#include <linux/amba/pl022.h>
#include <linux/io.h>
#include <linux/gfp.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/leds.h>
@@ -46,7 +46,6 @@
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
-#include <mach/clkdev.h>
#include <mach/hardware.h>
#include <mach/platform.h>
#include <plat/timer-sp.h>
diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c
index fd25ccd..f4455e3 100644
--- a/arch/arm/mach-vexpress/ct-ca9x4.c
+++ b/arch/arm/mach-vexpress/ct-ca9x4.c
@@ -8,8 +8,8 @@
#include <linux/platform_device.h>
#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <asm/pgtable.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/cache-l2x0.h>
@@ -18,7 +18,6 @@
#include <asm/pmu.h>
#include <asm/smp_twd.h>
-#include <mach/clkdev.h>
#include <mach/ct-ca9x4.h>
#include <plat/timer-sp.h>
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 7eaa232..d374a78 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -11,15 +11,14 @@
#include <linux/spinlock.h>
#include <linux/sysdev.h>
#include <linux/usb/isp1760.h>
+#include <linux/clkdev.h>
-#include <asm/clkdev.h>
#include <asm/sizes.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/hardware/arm_timer.h>
-#include <mach/clkdev.h>
#include <mach/motherboard.h>
#include <plat/timer-sp.h>
diff --git a/arch/arm/mach-w90x900/clock.h b/arch/arm/mach-w90x900/clock.h
index c56ddab..b88a1b1 100644
--- a/arch/arm/mach-w90x900/clock.h
+++ b/arch/arm/mach-w90x900/clock.h
@@ -10,7 +10,7 @@
* the Free Software Foundation; either version 2 of the License.
*/
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
void nuc900_clk_enable(struct clk *clk, int enable);
void nuc900_subclk_enable(struct clk *clk, int enable);
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 4414a01..8493ed0 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -599,6 +599,14 @@
help
Processor has the CP15 register, which has MPU related registers.
+config CPU_USE_DOMAINS
+ bool
+ depends on MMU
+ default y if !CPU_32v6K
+ help
+ This option enables or disables the use of domain switching
+ via the set_fs() function.
+
#
# CPU supports 36-bit I/O
#
@@ -628,6 +636,33 @@
Say Y here if you have a CPU with the ThumbEE extension and code to
make use of it. Say N for code that can run on CPUs without ThumbEE.
+config SWP_EMULATE
+ bool "Emulate SWP/SWPB instructions"
+ depends on CPU_V7
+ select HAVE_PROC_CPU if PROC_FS
+ default y if SMP
+ help
+ ARMv6 architecture deprecates use of the SWP/SWPB instructions.
+ ARMv7 multiprocessing extensions introduce the ability to disable
+ these instructions, triggering an undefined instruction exception
+ when executed. Say Y here to enable software emulation of these
+ instructions for userspace (not kernel) using LDREX/STREX.
+ Also creates /proc/cpu/swp_emulation for statistics.
+
+ In some older versions of glibc [<=2.8] SWP is used during futex
+ trylock() operations with the assumption that the code will not
+ be preempted. This invalid assumption may be more likely to fail
+ with SWP emulation enabled, leading to deadlock of the user
+ application.
+
+ NOTE: when accessing uncached shared regions, LDREX/STREX rely
+ on an external transaction monitoring block called a global
+ monitor to maintain update atomicity. If your system does not
+ implement a global monitor, this option can cause programs that
+ perform SWP operations to uncached memory to deadlock.
+
+ If unsure, say Y.
+
config CPU_BIG_ENDIAN
bool "Build big-endian kernel"
depends on ARCH_SUPPORTS_BIG_ENDIAN
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index ac6a361..e24fe6d 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -311,7 +311,7 @@
addr = page_address(page);
if (addr)
- *handle = page_to_dma(dev, page);
+ *handle = pfn_to_dma(dev, page_to_pfn(page));
return addr;
}
@@ -406,7 +406,7 @@
if (!arch_is_coherent())
__dma_free_remap(cpu_addr, size);
- __dma_free_buffer(dma_to_page(dev, handle), size);
+ __dma_free_buffer(pfn_to_page(dma_to_pfn(dev, handle)), size);
}
EXPORT_SYMBOL(dma_free_coherent);
@@ -554,17 +554,20 @@
struct scatterlist *s;
int i, j;
+ BUG_ON(!valid_dma_direction(dir));
+
for_each_sg(sg, s, nents, i) {
- s->dma_address = dma_map_page(dev, sg_page(s), s->offset,
+ s->dma_address = __dma_map_page(dev, sg_page(s), s->offset,
s->length, dir);
if (dma_mapping_error(dev, s->dma_address))
goto bad_mapping;
}
+ debug_dma_map_sg(dev, sg, nents, nents, dir);
return nents;
bad_mapping:
for_each_sg(sg, s, i, j)
- dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir);
+ __dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir);
return 0;
}
EXPORT_SYMBOL(dma_map_sg);
@@ -585,8 +588,10 @@
struct scatterlist *s;
int i;
+ debug_dma_unmap_sg(dev, sg, nents, dir);
+
for_each_sg(sg, s, nents, i)
- dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir);
+ __dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir);
}
EXPORT_SYMBOL(dma_unmap_sg);
@@ -611,6 +616,8 @@
__dma_page_dev_to_cpu(sg_page(s), s->offset,
s->length, dir);
}
+
+ debug_dma_sync_sg_for_cpu(dev, sg, nents, dir);
}
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
@@ -635,5 +642,16 @@
__dma_page_cpu_to_dev(sg_page(s), s->offset,
s->length, dir);
}
+
+ debug_dma_sync_sg_for_device(dev, sg, nents, dir);
}
EXPORT_SYMBOL(dma_sync_sg_for_device);
+
+#define PREALLOC_DMA_DEBUG_ENTRIES 4096
+
+static int __init dma_debug_do_init(void)
+{
+ dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
+ return 0;
+}
+fs_initcall(dma_debug_do_init);
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 55c17a6..ab50627 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -204,12 +204,8 @@
/*
* Don't allow RAM to be mapped - this causes problems with ARMv6+
*/
- if (pfn_valid(pfn)) {
- printk(KERN_WARNING "BUG: Your driver calls ioremap() on system memory. This leads\n"
- "to architecturally unpredictable behaviour on ARMv6+, and ioremap()\n"
- "will fail in the next kernel release. Please fix your driver.\n");
- WARN_ON(1);
- }
+ if (WARN_ON(pfn_valid(pfn)))
+ return NULL;
type = get_mem_type(mtype);
if (!type)
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 72ad3e1..79c01f5 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -24,6 +24,7 @@
#include <asm/smp_plat.h>
#include <asm/tlb.h>
#include <asm/highmem.h>
+#include <asm/traps.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -914,12 +915,11 @@
{
struct map_desc map;
unsigned long addr;
- void *vectors;
/*
* Allocate the vector page early.
*/
- vectors = early_alloc(PAGE_SIZE);
+ vectors_page = early_alloc(PAGE_SIZE);
for (addr = VMALLOC_END; addr; addr += PGDIR_SIZE)
pmd_clear(pmd_off_k(addr));
@@ -959,7 +959,7 @@
* location (0xffff0000). If we aren't using high-vectors, also
* create a mapping at the low-vectors virtual address.
*/
- map.pfn = __phys_to_pfn(virt_to_phys(vectors));
+ map.pfn = __phys_to_pfn(virt_to_phys(vectors_page));
map.virtual = 0xffff0000;
map.length = PAGE_SIZE;
map.type = MT_HIGH_VECTORS;
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
index 7d63bea..337f102 100644
--- a/arch/arm/mm/proc-macros.S
+++ b/arch/arm/mm/proc-macros.S
@@ -99,6 +99,10 @@
* 110x 0 1 0 r/w r/o
* 11x0 0 1 0 r/w r/o
* 1111 0 1 1 r/w r/w
+ *
+ * If !CONFIG_CPU_USE_DOMAINS, the following permissions are changed:
+ * 110x 1 1 1 r/o r/o
+ * 11x0 1 1 1 r/o r/o
*/
.macro armv6_mt_table pfx
\pfx\()_mt_table:
@@ -138,8 +142,11 @@
tst r1, #L_PTE_USER
orrne r3, r3, #PTE_EXT_AP1
+#ifdef CONFIG_CPU_USE_DOMAINS
+ @ allow kernel read/write access to read-only user pages
tstne r3, #PTE_EXT_APX
bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0
+#endif
tst r1, #L_PTE_EXEC
orreq r3, r3, #PTE_EXT_XN
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 53cbe22..2b5b20b 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -148,8 +148,11 @@
tst r1, #L_PTE_USER
orrne r3, r3, #PTE_EXT_AP1
+#ifdef CONFIG_CPU_USE_DOMAINS
+ @ allow kernel read/write access to read-only user pages
tstne r3, #PTE_EXT_APX
bicne r3, r3, #PTE_EXT_APX | PTE_EXT_AP0
+#endif
tst r1, #L_PTE_EXEC
orreq r3, r3, #PTE_EXT_XN
@@ -273,8 +276,6 @@
ALT_SMP(orr r4, r4, #TTB_FLAGS_SMP)
ALT_UP(orr r4, r4, #TTB_FLAGS_UP)
mcr p15, 0, r4, c2, c0, 1 @ load TTB1
- mov r10, #0x1f @ domains 0, 1 = manager
- mcr p15, 0, r10, c3, c0, 0 @ load domain access register
/*
* Memory region attributes with SCTLR.TRE=1
*
@@ -313,6 +314,10 @@
#ifdef CONFIG_CPU_ENDIAN_BE8
orr r6, r6, #1 << 25 @ big-endian page tables
#endif
+#ifdef CONFIG_SWP_EMULATE
+ orr r5, r5, #(1 << 10) @ set SW bit in "clear"
+ bic r6, r6, #(1 << 10) @ clear it in "mmuset"
+#endif
mrc p15, 0, r0, c1, c0, 0 @ read control register
bic r0, r0, r5 @ clear bits them
orr r0, r0, r6 @ set them
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index 92c5bb7..c940843 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -11,13 +11,13 @@
config ARCH_OMAP1
bool "TI OMAP1"
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
help
"Systems based on omap7xx, omap15xx or omap16xx"
config ARCH_OMAP2PLUS
bool "TI OMAP2/3/4"
- select COMMON_CLKDEV
+ select CLKDEV_LOOKUP
help
"Systems based on OMAP2, OMAP3 or OMAP4"
diff --git a/arch/arm/plat-omap/include/plat/clkdev_omap.h b/arch/arm/plat-omap/include/plat/clkdev_omap.h
index bb937f3..4b2028a 100644
--- a/arch/arm/plat-omap/include/plat/clkdev_omap.h
+++ b/arch/arm/plat-omap/include/plat/clkdev_omap.h
@@ -8,7 +8,7 @@
#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_PLAT_CLKDEV_OMAP_H
#define __ARCH_ARM_PLAT_OMAP_INCLUDE_PLAT_CLKDEV_OMAP_H
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
struct omap_clk {
u16 cpu;
diff --git a/arch/arm/plat-omap/include/plat/memory.h b/arch/arm/plat-omap/include/plat/memory.h
index d5306be..f8d922f 100644
--- a/arch/arm/plat-omap/include/plat/memory.h
+++ b/arch/arm/plat-omap/include/plat/memory.h
@@ -61,17 +61,17 @@
#define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
#define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0))
-#define __arch_page_to_dma(dev, page) \
- ({ dma_addr_t __dma = page_to_phys(page); \
+#define __arch_pfn_to_dma(dev, pfn) \
+ ({ dma_addr_t __dma = __pfn_to_phys(pfn); \
if (is_lbus_device(dev)) \
__dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \
__dma; })
-#define __arch_dma_to_page(dev, addr) \
+#define __arch_dma_to_pfn(dev, addr) \
({ dma_addr_t __dma = addr; \
if (is_lbus_device(dev)) \
__dma += PHYS_OFFSET - OMAP1510_LB_OFFSET; \
- phys_to_page(__dma); \
+ __phys_to_pfn(__dma); \
})
#define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \
diff --git a/arch/arm/plat-spear/include/plat/clock.h b/arch/arm/plat-spear/include/plat/clock.h
index 298bafc..2572260 100644
--- a/arch/arm/plat-spear/include/plat/clock.h
+++ b/arch/arm/plat-spear/include/plat/clock.h
@@ -15,7 +15,7 @@
#define __PLAT_CLOCK_H
#include <linux/list.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <linux/types.h>
/* clk structure flags */
diff --git a/arch/arm/plat-stmp3xxx/clock.c b/arch/arm/plat-stmp3xxx/clock.c
index e593a2a..2e712e1 100644
--- a/arch/arm/plat-stmp3xxx/clock.c
+++ b/arch/arm/plat-stmp3xxx/clock.c
@@ -25,9 +25,9 @@
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/io.h>
+#include <linux/clkdev.h>
#include <asm/mach-types.h>
-#include <asm/clkdev.h>
#include <mach/platform.h>
#include <mach/regs-clkctrl.h>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 7f217b3..b31b097 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -1,7 +1,7 @@
config SUPERH
def_bool y
select EMBEDDED
- select HAVE_CLK
+ select CLKDEV_LOOKUP
select HAVE_IDE if HAS_IOPORT
select HAVE_MEMBLOCK
select HAVE_OPROFILE
diff --git a/arch/sh/boards/mach-highlander/setup.c b/arch/sh/boards/mach-highlander/setup.c
index a5ecfba..87618c9 100644
--- a/arch/sh/boards/mach-highlander/setup.c
+++ b/arch/sh/boards/mach-highlander/setup.c
@@ -24,10 +24,10 @@
#include <linux/interrupt.h>
#include <linux/usb/r8a66597.h>
#include <linux/usb/m66592.h>
+#include <linux/clkdev.h>
#include <net/ax88796.h>
#include <asm/machvec.h>
#include <mach/highlander.h>
-#include <asm/clkdev.h>
#include <asm/clock.h>
#include <asm/heartbeat.h>
#include <asm/io.h>
diff --git a/arch/sh/include/asm/clkdev.h b/arch/sh/include/asm/clkdev.h
index 5645f35..6ba9186 100644
--- a/arch/sh/include/asm/clkdev.h
+++ b/arch/sh/include/asm/clkdev.h
@@ -1,9 +1,5 @@
/*
- * arch/sh/include/asm/clkdev.h
- *
- * Cloned from arch/arm/include/asm/clkdev.h:
- *
- * Copyright (C) 2008 Russell King.
+ * Copyright (C) 2010 Paul Mundt <lethal@linux-sh.org>
*
* 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
@@ -11,25 +7,25 @@
*
* Helper for the clk API to assist looking up a struct clk.
*/
-#ifndef __ASM_CLKDEV_H
-#define __ASM_CLKDEV_H
-struct clk;
+#ifndef __CLKDEV__H_
+#define __CLKDEV__H_
-struct clk_lookup {
- struct list_head node;
- const char *dev_id;
- const char *con_id;
- struct clk *clk;
-};
+#include <linux/bootmem.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
-struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
- const char *dev_fmt, ...);
+#include <asm/clock.h>
-void clkdev_add(struct clk_lookup *cl);
-void clkdev_drop(struct clk_lookup *cl);
+static inline struct clk_lookup_alloc *__clkdev_alloc(size_t size)
+{
+ if (!slab_is_available())
+ return alloc_bootmem_low_pages(size);
+ else
+ return kzalloc(size, GFP_KERNEL);
+}
-void clkdev_add_table(struct clk_lookup *, size_t);
-int clk_add_alias(const char *, const char *, char *, struct device *);
+#define __clk_put(clk)
+#define __clk_get(clk) ({ 1; })
-#endif
+#endif /* __CLKDEV_H__ */
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index 8eed6a4..cf65221 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -11,7 +11,7 @@
CFLAGS_REMOVE_return_address.o = -pg
-obj-y := clkdev.o debugtraps.o dma-nommu.o dumpstack.o \
+obj-y := debugtraps.o dma-nommu.o dumpstack.o \
idle.o io.o irq.o irq_$(BITS).o kdebugfs.o \
machvec.o nmi_debug.o process.o \
process_$(BITS).o ptrace.o ptrace_$(BITS).o \
diff --git a/arch/sh/kernel/clkdev.c b/arch/sh/kernel/clkdev.c
deleted file mode 100644
index 1f800ef..0000000
--- a/arch/sh/kernel/clkdev.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * arch/sh/kernel/clkdev.c
- *
- * Cloned from arch/arm/common/clkdev.c:
- *
- * Copyright (C) 2008 Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Helper for the clk API to assist looking up a struct clk.
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/string.h>
-#include <linux/mutex.h>
-#include <linux/clk.h>
-#include <linux/slab.h>
-#include <linux/bootmem.h>
-#include <linux/mm.h>
-#include <asm/clock.h>
-#include <asm/clkdev.h>
-
-static LIST_HEAD(clocks);
-static DEFINE_MUTEX(clocks_mutex);
-
-/*
- * Find the correct struct clk for the device and connection ID.
- * We do slightly fuzzy matching here:
- * An entry with a NULL ID is assumed to be a wildcard.
- * If an entry has a device ID, it must match
- * If an entry has a connection ID, it must match
- * Then we take the most specific entry - with the following
- * order of precedence: dev+con > dev only > con only.
- */
-static struct clk *clk_find(const char *dev_id, const char *con_id)
-{
- struct clk_lookup *p;
- struct clk *clk = NULL;
- int match, best = 0;
-
- list_for_each_entry(p, &clocks, node) {
- match = 0;
- if (p->dev_id) {
- if (!dev_id || strcmp(p->dev_id, dev_id))
- continue;
- match += 2;
- }
- if (p->con_id) {
- if (!con_id || strcmp(p->con_id, con_id))
- continue;
- match += 1;
- }
- if (match == 0)
- continue;
-
- if (match > best) {
- clk = p->clk;
- best = match;
- }
- }
- return clk;
-}
-
-struct clk *clk_get_sys(const char *dev_id, const char *con_id)
-{
- struct clk *clk;
-
- mutex_lock(&clocks_mutex);
- clk = clk_find(dev_id, con_id);
- mutex_unlock(&clocks_mutex);
-
- return clk ? clk : ERR_PTR(-ENOENT);
-}
-EXPORT_SYMBOL(clk_get_sys);
-
-void clkdev_add(struct clk_lookup *cl)
-{
- mutex_lock(&clocks_mutex);
- list_add_tail(&cl->node, &clocks);
- mutex_unlock(&clocks_mutex);
-}
-EXPORT_SYMBOL(clkdev_add);
-
-void __init clkdev_add_table(struct clk_lookup *cl, size_t num)
-{
- mutex_lock(&clocks_mutex);
- while (num--) {
- list_add_tail(&cl->node, &clocks);
- cl++;
- }
- mutex_unlock(&clocks_mutex);
-}
-
-#define MAX_DEV_ID 20
-#define MAX_CON_ID 16
-
-struct clk_lookup_alloc {
- struct clk_lookup cl;
- char dev_id[MAX_DEV_ID];
- char con_id[MAX_CON_ID];
-};
-
-struct clk_lookup * __init_refok
-clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
-{
- struct clk_lookup_alloc *cla;
-
- if (!slab_is_available())
- cla = alloc_bootmem_low_pages(sizeof(*cla));
- else
- cla = kzalloc(sizeof(*cla), GFP_KERNEL);
-
- if (!cla)
- return NULL;
-
- cla->cl.clk = clk;
- if (con_id) {
- strlcpy(cla->con_id, con_id, sizeof(cla->con_id));
- cla->cl.con_id = cla->con_id;
- }
-
- if (dev_fmt) {
- va_list ap;
-
- va_start(ap, dev_fmt);
- vscnprintf(cla->dev_id, sizeof(cla->dev_id), dev_fmt, ap);
- cla->cl.dev_id = cla->dev_id;
- va_end(ap);
- }
-
- return &cla->cl;
-}
-EXPORT_SYMBOL(clkdev_alloc);
-
-int clk_add_alias(const char *alias, const char *alias_dev_name, char *id,
- struct device *dev)
-{
- struct clk *r = clk_get(dev, id);
- struct clk_lookup *l;
-
- if (IS_ERR(r))
- return PTR_ERR(r);
-
- l = clkdev_alloc(r, alias, alias_dev_name);
- clk_put(r);
- if (!l)
- return -ENODEV;
- clkdev_add(l);
- return 0;
-}
-EXPORT_SYMBOL(clk_add_alias);
-
-/*
- * clkdev_drop - remove a clock dynamically allocated
- */
-void clkdev_drop(struct clk_lookup *cl)
-{
- struct clk_lookup_alloc *cla = container_of(cl, struct clk_lookup_alloc, cl);
-
- mutex_lock(&clocks_mutex);
- list_del(&cl->node);
- mutex_unlock(&clocks_mutex);
- kfree(cla);
-}
-EXPORT_SYMBOL(clkdev_drop);
diff --git a/arch/sh/kernel/cpu/clock-cpg.c b/arch/sh/kernel/cpu/clock-cpg.c
index e2f63d6..dd0e0f2 100644
--- a/arch/sh/kernel/cpu/clock-cpg.c
+++ b/arch/sh/kernel/cpu/clock-cpg.c
@@ -2,7 +2,7 @@
#include <linux/compiler.h>
#include <linux/slab.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
static struct clk master_clk = {
diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index 50f887d..4187cf4 100644
--- a/arch/sh/kernel/cpu/clock.c
+++ b/arch/sh/kernel/cpu/clock.c
@@ -48,20 +48,4 @@
return ret;
}
-/*
- * Returns a clock. Note that we first try to use device id on the bus
- * and clock name. If this fails, we try to use clock name only.
- */
-struct clk *clk_get(struct device *dev, const char *con_id)
-{
- const char *dev_id = dev ? dev_name(dev) : NULL;
-
- return clk_get_sys(dev_id, con_id);
-}
-EXPORT_SYMBOL_GPL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL_GPL(clk_put);
diff --git a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
index b601fa3..fbb6657 100644
--- a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
+++ b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
@@ -13,7 +13,7 @@
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
index 71291ae..93c6460 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
@@ -21,7 +21,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
/* SH7343 registers */
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7366.c b/arch/sh/kernel/cpu/sh4a/clock-sh7366.c
index 7ce5bbc..049dc062 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7366.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7366.c
@@ -21,7 +21,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
/* SH7366 registers */
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
index 2030f3d..9d23a36 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
@@ -21,7 +21,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/hwblk.h>
#include <cpu/sh7722.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7723.c b/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
index d3938f0..55493cd 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7723.c
@@ -22,7 +22,7 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/clk.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/hwblk.h>
#include <cpu/sh7723.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7724.c b/arch/sh/kernel/cpu/sh4a/clock-sh7724.c
index 0fe2e93..3e34ac0 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7724.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7724.c
@@ -22,7 +22,7 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/clk.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/hwblk.h>
#include <cpu/sh7724.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7757.c b/arch/sh/kernel/cpu/sh4a/clock-sh7757.c
index ce39a2a..e073e3e 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7757.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7757.c
@@ -12,7 +12,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7763.c b/arch/sh/kernel/cpu/sh4a/clock-sh7763.c
index 1f1df48..599630f 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7763.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7763.c
@@ -13,7 +13,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
#include <asm/io.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7780.c b/arch/sh/kernel/cpu/sh4a/clock-sh7780.c
index 62d7063..8894926 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7780.c
@@ -12,7 +12,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
#include <asm/io.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
index c3e458a..2d96024 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
@@ -14,7 +14,7 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/cpufreq.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
#include <cpu/sh7785.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7786.c b/arch/sh/kernel/cpu/sh4a/clock-sh7786.c
index 597c9fb..42e403b 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7786.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7786.c
@@ -13,7 +13,7 @@
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
diff --git a/arch/sh/kernel/cpu/sh4a/clock-shx3.c b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
index 4f70df6..1afdb93 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-shx3.c
@@ -14,7 +14,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <asm/clkdev.h>
+#include <linux/clkdev.h>
#include <asm/clock.h>
#include <asm/freq.h>
diff --git a/drivers/Kconfig b/drivers/Kconfig
index a2b902f..3d93b3a 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -111,4 +111,6 @@
source "drivers/staging/Kconfig"
source "drivers/platform/Kconfig"
+
+source "drivers/clk/Kconfig"
endmenu
diff --git a/drivers/Makefile b/drivers/Makefile
index f3ebb30..bf15ce7 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -115,3 +115,5 @@
obj-$(CONFIG_STAGING) += staging/
obj-y += platform/
obj-y += ieee802154/
+#common clk code
+obj-y += clk/
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 2737b97..e7df019 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -147,6 +147,39 @@
clk_put(pclk);
}
+static int amba_get_enable_vcore(struct amba_device *pcdev)
+{
+ struct regulator *vcore = regulator_get(&pcdev->dev, "vcore");
+ int ret;
+
+ pcdev->vcore = vcore;
+
+ if (IS_ERR(vcore)) {
+ /* It is OK not to supply a vcore regulator */
+ if (PTR_ERR(vcore) == -ENODEV)
+ return 0;
+ return PTR_ERR(vcore);
+ }
+
+ ret = regulator_enable(vcore);
+ if (ret) {
+ regulator_put(vcore);
+ pcdev->vcore = ERR_PTR(-ENODEV);
+ }
+
+ return ret;
+}
+
+static void amba_put_disable_vcore(struct amba_device *pcdev)
+{
+ struct regulator *vcore = pcdev->vcore;
+
+ if (!IS_ERR(vcore)) {
+ regulator_disable(vcore);
+ regulator_put(vcore);
+ }
+}
+
/*
* These are the device model conversion veneers; they convert the
* device model structures to our more specific structures.
@@ -159,6 +192,10 @@
int ret;
do {
+ ret = amba_get_enable_vcore(pcdev);
+ if (ret)
+ break;
+
ret = amba_get_enable_pclk(pcdev);
if (ret)
break;
@@ -168,6 +205,7 @@
break;
amba_put_disable_pclk(pcdev);
+ amba_put_disable_vcore(pcdev);
} while (0);
return ret;
@@ -180,6 +218,7 @@
int ret = drv->remove(pcdev);
amba_put_disable_pclk(pcdev);
+ amba_put_disable_vcore(pcdev);
return ret;
}
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
new file mode 100644
index 0000000..4168c88
--- /dev/null
+++ b/drivers/clk/Kconfig
@@ -0,0 +1,4 @@
+
+config CLKDEV_LOOKUP
+ bool
+ select HAVE_CLK
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
new file mode 100644
index 0000000..07613fa
--- /dev/null
+++ b/drivers/clk/Makefile
@@ -0,0 +1,2 @@
+
+obj-$(CONFIG_CLKDEV_LOOKUP) += clkdev.o
diff --git a/arch/arm/common/clkdev.c b/drivers/clk/clkdev.c
similarity index 93%
rename from arch/arm/common/clkdev.c
rename to drivers/clk/clkdev.c
index e2b2bb6..0fc0a79 100644
--- a/arch/arm/common/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -1,5 +1,5 @@
/*
- * arch/arm/common/clkdev.c
+ * drivers/clk/clkdev.c
*
* Copyright (C) 2008 Russell King.
*
@@ -18,10 +18,7 @@
#include <linux/string.h>
#include <linux/mutex.h>
#include <linux/clk.h>
-#include <linux/slab.h>
-
-#include <asm/clkdev.h>
-#include <mach/clkdev.h>
+#include <linux/clkdev.h>
static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);
@@ -120,12 +117,12 @@
char con_id[MAX_CON_ID];
};
-struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
- const char *dev_fmt, ...)
+struct clk_lookup * __init_refok
+clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
{
struct clk_lookup_alloc *cla;
- cla = kzalloc(sizeof(*cla), GFP_KERNEL);
+ cla = __clkdev_alloc(sizeof(*cla));
if (!cla)
return NULL;
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index c6454cc..9e7f259 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -18,6 +18,7 @@
#include <linux/device.h>
#include <linux/err.h>
#include <linux/resource.h>
+#include <linux/regulator/consumer.h>
#define AMBA_NR_IRQS 2
#define AMBA_CID 0xb105f00d
@@ -28,6 +29,7 @@
struct device dev;
struct resource res;
struct clk *pclk;
+ struct regulator *vcore;
u64 dma_mask;
unsigned int periphid;
unsigned int irq[AMBA_NR_IRQS];
@@ -71,6 +73,12 @@
#define amba_pclk_disable(d) \
do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)
+#define amba_vcore_enable(d) \
+ (IS_ERR((d)->vcore) ? 0 : regulator_enable((d)->vcore))
+
+#define amba_vcore_disable(d) \
+ do { if (!IS_ERR((d)->vcore)) regulator_disable((d)->vcore); } while (0)
+
/* 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)
diff --git a/include/linux/clkdev.h b/include/linux/clkdev.h
new file mode 100644
index 0000000..457bcb0
--- /dev/null
+++ b/include/linux/clkdev.h
@@ -0,0 +1,36 @@
+/*
+ * include/linux/clkdev.h
+ *
+ * Copyright (C) 2008 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Helper for the clk API to assist looking up a struct clk.
+ */
+#ifndef __CLKDEV_H
+#define __CLKDEV_H
+
+#include <asm/clkdev.h>
+
+struct clk;
+struct device;
+
+struct clk_lookup {
+ struct list_head node;
+ const char *dev_id;
+ const char *con_id;
+ struct clk *clk;
+};
+
+struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
+ const char *dev_fmt, ...);
+
+void clkdev_add(struct clk_lookup *cl);
+void clkdev_drop(struct clk_lookup *cl);
+
+void clkdev_add_table(struct clk_lookup *, size_t);
+int clk_add_alias(const char *, const char *, char *, struct device *);
+
+#endif