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-rw-r--r--arch/arc/Kconfig40
-rw-r--r--arch/arc/Makefile2
-rw-r--r--arch/arc/boot/dts/hsdk.dts15
-rw-r--r--arch/arc/configs/axs101_defconfig2
-rw-r--r--arch/arc/configs/axs103_defconfig1
-rw-r--r--arch/arc/configs/axs103_smp_defconfig1
-rw-r--r--arch/arc/configs/hsdk_defconfig4
-rw-r--r--arch/arc/configs/nps_defconfig2
-rw-r--r--arch/arc/configs/nsim_700_defconfig1
-rw-r--r--arch/arc/configs/nsimosci_defconfig2
-rw-r--r--arch/arc/configs/nsimosci_hs_defconfig1
-rw-r--r--arch/arc/configs/nsimosci_hs_smp_defconfig1
-rw-r--r--arch/arc/configs/tb10x_defconfig1
-rw-r--r--arch/arc/configs/vdk_hs38_defconfig1
-rw-r--r--arch/arc/configs/vdk_hs38_smp_defconfig1
-rw-r--r--arch/arc/include/asm/bitops.h4
-rw-r--r--arch/arc/include/asm/cache.h2
-rw-r--r--arch/arc/include/asm/futex.h2
-rw-r--r--arch/arc/include/asm/io.h72
-rw-r--r--arch/arc/include/asm/pgalloc.h5
-rw-r--r--arch/arc/kernel/kgdb.c12
-rw-r--r--arch/arc/kernel/process.c2
-rw-r--r--arch/arc/kernel/setup.c9
-rw-r--r--arch/arc/kernel/signal.c4
-rw-r--r--arch/arc/mm/cache.c22
-rw-r--r--arch/arc/mm/dma.c2
-rw-r--r--arch/arc/mm/fault.c4
-rw-r--r--arch/arc/mm/init.c25
-rw-r--r--arch/arc/plat-axs10x/Kconfig2
-rw-r--r--arch/arc/plat-hsdk/Kconfig2
30 files changed, 156 insertions, 88 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index c9e2a1323536..376366a7db81 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -13,12 +13,10 @@ config ARC
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
- select ARCH_HAS_SG_CHAIN
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS
select COMMON_CLK
- select DMA_DIRECT_OPS
select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC)
select GENERIC_CLOCKEVENTS
select GENERIC_FIND_FIRST_BIT
@@ -26,6 +24,7 @@ config ARC
select GENERIC_IRQ_SHOW
select GENERIC_PCI_IOMAP
select GENERIC_PENDING_IRQ if SMP
+ select GENERIC_SCHED_CLOCK
select GENERIC_SMP_IDLE_THREAD
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
@@ -46,14 +45,12 @@ config ARC
select OF
select OF_EARLY_FLATTREE
select OF_RESERVED_MEM
+ select PCI_SYSCALL if PCI
select PERF_USE_VMALLOC if ARC_CACHE_VIPT_ALIASING
config ARCH_HAS_CACHE_LINE_SIZE
def_bool y
-config MIGHT_HAVE_PCI
- bool
-
config TRACE_IRQFLAGS_SUPPORT
def_bool y
@@ -109,7 +106,7 @@ endmenu
choice
prompt "ARC Instruction Set"
- default ISA_ARCOMPACT
+ default ISA_ARCV2
config ISA_ARCOMPACT
bool "ARCompact ISA"
@@ -176,13 +173,11 @@ endchoice
config CPU_BIG_ENDIAN
bool "Enable Big Endian Mode"
- default n
help
Build kernel for Big Endian Mode of ARC CPU
config SMP
bool "Symmetric Multi-Processing"
- default n
select ARC_MCIP if ISA_ARCV2
help
This enables support for systems with more than one CPU.
@@ -254,7 +249,6 @@ config ARC_CACHE_PAGES
config ARC_CACHE_VIPT_ALIASING
bool "Support VIPT Aliasing D$"
depends on ARC_HAS_DCACHE && ISA_ARCOMPACT
- default n
endif #ARC_CACHE
@@ -262,7 +256,6 @@ config ARC_HAS_ICCM
bool "Use ICCM"
help
Single Cycle RAMS to store Fast Path Code
- default n
config ARC_ICCM_SZ
int "ICCM Size in KB"
@@ -273,7 +266,6 @@ config ARC_HAS_DCCM
bool "Use DCCM"
help
Single Cycle RAMS to store Fast Path Data
- default n
config ARC_DCCM_SZ
int "DCCM Size in KB"
@@ -366,13 +358,11 @@ if ISA_ARCOMPACT
config ARC_COMPACT_IRQ_LEVELS
bool "Setup Timer IRQ as high Priority"
- default n
# if SMP, LV2 enabled ONLY if ARC implementation has LV2 re-entrancy
depends on !SMP
config ARC_FPU_SAVE_RESTORE
bool "Enable FPU state persistence across context switch"
- default n
help
Double Precision Floating Point unit had dedicated regs which
need to be saved/restored across context-switch.
@@ -453,7 +443,6 @@ config HIGHMEM
config ARC_HAS_PAE40
bool "Support for the 40-bit Physical Address Extension"
- default n
depends on ISA_ARCV2
select HIGHMEM
select PHYS_ADDR_T_64BIT
@@ -496,7 +485,6 @@ config HZ
config ARC_METAWARE_HLINK
bool "Support for Metaware debugger assisted Host access"
- default n
help
This options allows a Linux userland apps to directly access
host file system (open/creat/read/write etc) with help from
@@ -524,13 +512,11 @@ config ARC_DW2_UNWIND
config ARC_DBG_TLB_PARANOIA
bool "Paranoia Checks in Low Level TLB Handlers"
- default n
endif
config ARC_UBOOT_SUPPORT
bool "Support uboot arg Handling"
- default n
help
ARC Linux by default checks for uboot provided args as pointers to
external cmdline or DTB. This however breaks in absence of uboot,
@@ -553,24 +539,4 @@ config FORCE_MAX_ZONEORDER
default "12" if ARC_HUGEPAGE_16M
default "11"
-menu "Bus Support"
-
-config PCI
- bool "PCI support" if MIGHT_HAVE_PCI
- help
- PCI is the name of a bus system, i.e., the way the CPU talks to
- the other stuff inside your box. Find out if your board/platform
- has PCI.
-
- Note: PCIe support for Synopsys Device will be available only
- when HAPS DX is configured with PCIe RC bitmap. If you have PCI,
- say Y, otherwise N.
-
-config PCI_SYSCALL
- def_bool PCI
-
-source "drivers/pci/Kconfig"
-
-endmenu
-
source "kernel/power/Kconfig"
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index c64c505d966c..df00578c279d 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -6,7 +6,7 @@
# published by the Free Software Foundation.
#
-KBUILD_DEFCONFIG := nsim_700_defconfig
+KBUILD_DEFCONFIG := nsim_hs_defconfig
cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__
cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7
diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index ef149f59929a..43f17b51ee89 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -222,6 +222,21 @@
bus-width = <4>;
dma-coherent;
};
+
+ gpio: gpio@3000 {
+ compatible = "snps,dw-apb-gpio";
+ reg = <0x3000 0x20>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gpio_port_a: gpio-controller@0 {
+ compatible = "snps,dw-apb-gpio-port";
+ gpio-controller;
+ #gpio-cells = <2>;
+ snps,nr-gpios = <24>;
+ reg = <0>;
+ };
+ };
};
memory@80000000 {
diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig
index 41bc08be6a3b..020d4493edfd 100644
--- a/arch/arc/configs/axs101_defconfig
+++ b/arch/arc/configs/axs101_defconfig
@@ -14,6 +14,7 @@ CONFIG_PERF_EVENTS=y
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_SLUB_DEBUG is not set
# CONFIG_COMPAT_BRK is not set
+CONFIG_ISA_ARCOMPACT=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
@@ -95,6 +96,7 @@ CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig
index 1e1c4a8011b5..666314fffc60 100644
--- a/arch/arc/configs/axs103_defconfig
+++ b/arch/arc/configs/axs103_defconfig
@@ -94,6 +94,7 @@ CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig
index 6b0c0cfd5c30..429832b8560b 100644
--- a/arch/arc/configs/axs103_smp_defconfig
+++ b/arch/arc/configs/axs103_smp_defconfig
@@ -97,6 +97,7 @@ CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig
index 1dec2b4bc5e6..87b23b7fb781 100644
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -45,6 +45,9 @@ CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_DWAPB=y
# CONFIG_HWMON is not set
CONFIG_DRM=y
# CONFIG_DRM_FBDEV_EMULATION is not set
@@ -65,6 +68,7 @@ CONFIG_EXT3_FS=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/arc/configs/nps_defconfig b/arch/arc/configs/nps_defconfig
index 31ba224bbfb4..6e84060e7c90 100644
--- a/arch/arc/configs/nps_defconfig
+++ b/arch/arc/configs/nps_defconfig
@@ -15,6 +15,7 @@ CONFIG_SYSCTL_SYSCALL=y
CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_COMPAT_BRK is not set
+CONFIG_ISA_ARCOMPACT=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
@@ -73,6 +74,7 @@ CONFIG_PROC_KCORE=y
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
CONFIG_ROOT_NFS=y
CONFIG_DEBUG_INFO=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index 8e0b8b134cd9..219c2a65294b 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -15,6 +15,7 @@ CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_SLUB_DEBUG is not set
# CONFIG_COMPAT_BRK is not set
+CONFIG_ISA_ARCOMPACT=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
# CONFIG_LBDAF is not set
diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig
index f14eeff7d308..35dfc6491a09 100644
--- a/arch/arc/configs/nsimosci_defconfig
+++ b/arch/arc/configs/nsimosci_defconfig
@@ -15,6 +15,7 @@ CONFIG_EMBEDDED=y
CONFIG_PERF_EVENTS=y
# CONFIG_SLUB_DEBUG is not set
# CONFIG_COMPAT_BRK is not set
+CONFIG_ISA_ARCOMPACT=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
# CONFIG_LBDAF is not set
@@ -66,5 +67,6 @@ CONFIG_EXT2_FS_XATTR=y
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig
index 025298a48305..1638e5bc9672 100644
--- a/arch/arc/configs/nsimosci_hs_defconfig
+++ b/arch/arc/configs/nsimosci_hs_defconfig
@@ -65,5 +65,6 @@ CONFIG_EXT2_FS_XATTR=y
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig
index df7b77b13b82..11cfbdb0f441 100644
--- a/arch/arc/configs/nsimosci_hs_smp_defconfig
+++ b/arch/arc/configs/nsimosci_hs_smp_defconfig
@@ -76,6 +76,7 @@ CONFIG_EXT2_FS_XATTR=y
CONFIG_TMPFS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FTRACE=y
diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig
index a7f65313f84a..e71ade3cf9c8 100644
--- a/arch/arc/configs/tb10x_defconfig
+++ b/arch/arc/configs/tb10x_defconfig
@@ -19,6 +19,7 @@ CONFIG_KALLSYMS_ALL=y
# CONFIG_AIO is not set
CONFIG_EMBEDDED=y
# CONFIG_COMPAT_BRK is not set
+CONFIG_ISA_ARCOMPACT=y
CONFIG_SLAB=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
diff --git a/arch/arc/configs/vdk_hs38_defconfig b/arch/arc/configs/vdk_hs38_defconfig
index db47c3541f15..1e59a2e9c602 100644
--- a/arch/arc/configs/vdk_hs38_defconfig
+++ b/arch/arc/configs/vdk_hs38_defconfig
@@ -85,6 +85,7 @@ CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig
index a8ac5e917d9a..b5c3f6c54b03 100644
--- a/arch/arc/configs/vdk_hs38_smp_defconfig
+++ b/arch/arc/configs/vdk_hs38_smp_defconfig
@@ -90,6 +90,7 @@ CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h
index 8da87feec59a..ee9246184033 100644
--- a/arch/arc/include/asm/bitops.h
+++ b/arch/arc/include/asm/bitops.h
@@ -278,7 +278,7 @@ static inline __attribute__ ((const)) int clz(unsigned int x)
return res;
}
-static inline int constant_fls(int x)
+static inline int constant_fls(unsigned int x)
{
int r = 32;
@@ -312,7 +312,7 @@ static inline int constant_fls(int x)
* @result: [1-32]
* fls(1) = 1, fls(0x80000000) = 32, fls(0) = 0
*/
-static inline __attribute__ ((const)) int fls(unsigned long x)
+static inline __attribute__ ((const)) int fls(unsigned int x)
{
if (__builtin_constant_p(x))
return constant_fls(x);
diff --git a/arch/arc/include/asm/cache.h b/arch/arc/include/asm/cache.h
index ff7d3232764a..f393b663413e 100644
--- a/arch/arc/include/asm/cache.h
+++ b/arch/arc/include/asm/cache.h
@@ -113,7 +113,9 @@ extern unsigned long perip_base, perip_end;
/* IO coherency related Auxiliary registers */
#define ARC_REG_IO_COH_ENABLE 0x500
+#define ARC_IO_COH_ENABLE_BIT BIT(0)
#define ARC_REG_IO_COH_PARTIAL 0x501
+#define ARC_IO_COH_PARTIAL_BIT BIT(0)
#define ARC_REG_IO_COH_AP0_BASE 0x508
#define ARC_REG_IO_COH_AP0_SIZE 0x509
diff --git a/arch/arc/include/asm/futex.h b/arch/arc/include/asm/futex.h
index eb887dd13e74..c29c3fae6854 100644
--- a/arch/arc/include/asm/futex.h
+++ b/arch/arc/include/asm/futex.h
@@ -126,7 +126,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 expval,
int ret = 0;
u32 existval;
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
#ifndef CONFIG_ARC_HAS_LLSC
diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h
index c22b181e8206..2f39d9b3886e 100644
--- a/arch/arc/include/asm/io.h
+++ b/arch/arc/include/asm/io.h
@@ -12,6 +12,7 @@
#include <linux/types.h>
#include <asm/byteorder.h>
#include <asm/page.h>
+#include <asm/unaligned.h>
#ifdef CONFIG_ISA_ARCV2
#include <asm/barrier.h>
@@ -94,6 +95,42 @@ static inline u32 __raw_readl(const volatile void __iomem *addr)
return w;
}
+/*
+ * {read,write}s{b,w,l}() repeatedly access the same IO address in
+ * native endianness in 8-, 16-, 32-bit chunks {into,from} memory,
+ * @count times
+ */
+#define __raw_readsx(t,f) \
+static inline void __raw_reads##f(const volatile void __iomem *addr, \
+ void *ptr, unsigned int count) \
+{ \
+ bool is_aligned = ((unsigned long)ptr % ((t) / 8)) == 0; \
+ u##t *buf = ptr; \
+ \
+ if (!count) \
+ return; \
+ \
+ /* Some ARC CPU's don't support unaligned accesses */ \
+ if (is_aligned) { \
+ do { \
+ u##t x = __raw_read##f(addr); \
+ *buf++ = x; \
+ } while (--count); \
+ } else { \
+ do { \
+ u##t x = __raw_read##f(addr); \
+ put_unaligned(x, buf++); \
+ } while (--count); \
+ } \
+}
+
+#define __raw_readsb __raw_readsb
+__raw_readsx(8, b)
+#define __raw_readsw __raw_readsw
+__raw_readsx(16, w)
+#define __raw_readsl __raw_readsl
+__raw_readsx(32, l)
+
#define __raw_writeb __raw_writeb
static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
{
@@ -126,6 +163,35 @@ static inline void __raw_writel(u32 w, volatile void __iomem *addr)
}
+#define __raw_writesx(t,f) \
+static inline void __raw_writes##f(volatile void __iomem *addr, \
+ const void *ptr, unsigned int count) \
+{ \
+ bool is_aligned = ((unsigned long)ptr % ((t) / 8)) == 0; \
+ const u##t *buf = ptr; \
+ \
+ if (!count) \
+ return; \
+ \
+ /* Some ARC CPU's don't support unaligned accesses */ \
+ if (is_aligned) { \
+ do { \
+ __raw_write##f(*buf++, addr); \
+ } while (--count); \
+ } else { \
+ do { \
+ __raw_write##f(get_unaligned(buf++), addr); \
+ } while (--count); \
+ } \
+}
+
+#define __raw_writesb __raw_writesb
+__raw_writesx(8, b)
+#define __raw_writesw __raw_writesw
+__raw_writesx(16, w)
+#define __raw_writesl __raw_writesl
+__raw_writesx(32, l)
+
/*
* MMIO can also get buffered/optimized in micro-arch, so barriers needed
* Based on ARM model for the typical use case
@@ -141,10 +207,16 @@ static inline void __raw_writel(u32 w, volatile void __iomem *addr)
#define readb(c) ({ u8 __v = readb_relaxed(c); __iormb(); __v; })
#define readw(c) ({ u16 __v = readw_relaxed(c); __iormb(); __v; })
#define readl(c) ({ u32 __v = readl_relaxed(c); __iormb(); __v; })
+#define readsb(p,d,l) ({ __raw_readsb(p,d,l); __iormb(); })
+#define readsw(p,d,l) ({ __raw_readsw(p,d,l); __iormb(); })
+#define readsl(p,d,l) ({ __raw_readsl(p,d,l); __iormb(); })
#define writeb(v,c) ({ __iowmb(); writeb_relaxed(v,c); })
#define writew(v,c) ({ __iowmb(); writew_relaxed(v,c); })
#define writel(v,c) ({ __iowmb(); writel_relaxed(v,c); })
+#define writesb(p,d,l) ({ __iowmb(); __raw_writesb(p,d,l); })
+#define writesw(p,d,l) ({ __iowmb(); __raw_writesw(p,d,l); })
+#define writesl(p,d,l) ({ __iowmb(); __raw_writesl(p,d,l); })
/*
* Relaxed API for drivers which can handle barrier ordering themselves
diff --git a/arch/arc/include/asm/pgalloc.h b/arch/arc/include/asm/pgalloc.h
index 3749234b7419..9c9b5a5ebf2e 100644
--- a/arch/arc/include/asm/pgalloc.h
+++ b/arch/arc/include/asm/pgalloc.h
@@ -90,8 +90,7 @@ static inline int __get_order_pte(void)
return get_order(PTRS_PER_PTE * sizeof(pte_t));
}
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
- unsigned long address)
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
{
pte_t *pte;
@@ -102,7 +101,7 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
}
static inline pgtable_t
-pte_alloc_one(struct mm_struct *mm, unsigned long address)
+pte_alloc_one(struct mm_struct *mm)
{
pgtable_t pte_pg;
struct page *page;
diff --git a/arch/arc/kernel/kgdb.c b/arch/arc/kernel/kgdb.c
index 9a3c34af2ae8..96bca9963c63 100644
--- a/arch/arc/kernel/kgdb.c
+++ b/arch/arc/kernel/kgdb.c
@@ -192,19 +192,13 @@ void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long ip)
instruction_pointer(regs) = ip;
}
-static void kgdb_call_nmi_hook(void *ignored)
+void kgdb_call_nmi_hook(void *ignored)
{
+ /* Default implementation passes get_irq_regs() but we don't */
kgdb_nmicallback(raw_smp_processor_id(), NULL);
}
-void kgdb_roundup_cpus(unsigned long flags)
-{
- local_irq_enable();
- smp_call_function(kgdb_call_nmi_hook, NULL, 0);
- local_irq_disable();
-}
-
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
/* breakpoint instruction: TRAP_S 0x3 */
#ifdef CONFIG_CPU_BIG_ENDIAN
.gdb_bpt_instr = {0x78, 0x7e},
diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
index 8ce6e7235915..641c364fc232 100644
--- a/arch/arc/kernel/process.c
+++ b/arch/arc/kernel/process.c
@@ -61,7 +61,7 @@ SYSCALL_DEFINE3(arc_usr_cmpxchg, int *, uaddr, int, expected, int, new)
/* Z indicates to userspace if operation succeded */
regs->status32 &= ~STATUS_Z_MASK;
- ret = access_ok(VERIFY_WRITE, uaddr, sizeof(*uaddr));
+ ret = access_ok(uaddr, sizeof(*uaddr));
if (!ret)
goto fail;
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 714dc5c2baf1..2e018b8c2e19 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -244,7 +244,7 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
{
struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id];
struct bcr_identity *core = &cpu->core;
- int i, n = 0;
+ int i, n = 0, ua = 0;
FIX_PTR(cpu);
@@ -264,10 +264,13 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
IS_AVAIL2(cpu->extn.rtc, "RTC [UP 64-bit] ", CONFIG_ARC_TIMERS_64BIT),
IS_AVAIL2(cpu->extn.gfrc, "GFRC [SMP 64-bit] ", CONFIG_ARC_TIMERS_64BIT));
- n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
+#ifdef __ARC_UNALIGNED__
+ ua = 1;
+#endif
+ n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s%s",
IS_AVAIL2(cpu->isa.atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
IS_AVAIL2(cpu->isa.ldd, "ll64 ", CONFIG_ARC_HAS_LL64),
- IS_AVAIL1(cpu->isa.unalign, "unalign (not used)"));
+ IS_AVAIL1(cpu->isa.unalign, "unalign "), IS_USED_RUN(ua));
if (i)
n += scnprintf(buf + n, len - n, "\n\t\t: ");
diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c
index 48685445002e..1bfb7de696bd 100644
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -169,7 +169,7 @@ SYSCALL_DEFINE0(rt_sigreturn)
sf = (struct rt_sigframe __force __user *)(regs->sp);
- if (!access_ok(VERIFY_READ, sf, sizeof(*sf)))
+ if (!access_ok(sf, sizeof(*sf)))
goto badframe;
if (__get_user(magic, &sf->sigret_magic))
@@ -219,7 +219,7 @@ static inline void __user *get_sigframe(struct ksignal *ksig,
frame = (void __user *)((sp - framesize) & ~7);
/* Check that we can actually write to the signal frame */
- if (!access_ok(VERIFY_WRITE, frame, framesize))
+ if (!access_ok(frame, framesize))
frame = NULL;
return frame;
diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
index f2701c13a66b..4135abec3fb0 100644
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@ -1145,6 +1145,20 @@ noinline void __init arc_ioc_setup(void)
unsigned int ioc_base, mem_sz;
/*
+ * If IOC was already enabled (due to bootloader) it technically needs to
+ * be reconfigured with aperture base,size corresponding to Linux memory map
+ * which will certainly be different than uboot's. But disabling and
+ * reenabling IOC when DMA might be potentially active is tricky business.
+ * To avoid random memory issues later, just panic here and ask user to
+ * upgrade bootloader to one which doesn't enable IOC
+ */
+ if (read_aux_reg(ARC_REG_IO_COH_ENABLE) & ARC_IO_COH_ENABLE_BIT)
+ panic("IOC already enabled, please upgrade bootloader!\n");
+
+ if (!ioc_enable)
+ return;
+
+ /*
* As for today we don't support both IOC and ZONE_HIGHMEM enabled
* simultaneously. This happens because as of today IOC aperture covers
* only ZONE_NORMAL (low mem) and any dma transactions outside this
@@ -1187,8 +1201,8 @@ noinline void __init arc_ioc_setup(void)
panic("IOC Aperture start must be aligned to the size of the aperture");
write_aux_reg(ARC_REG_IO_COH_AP0_BASE, ioc_base >> 12);
- write_aux_reg(ARC_REG_IO_COH_PARTIAL, 1);
- write_aux_reg(ARC_REG_IO_COH_ENABLE, 1);
+ write_aux_reg(ARC_REG_IO_COH_PARTIAL, ARC_IO_COH_PARTIAL_BIT);
+ write_aux_reg(ARC_REG_IO_COH_ENABLE, ARC_IO_COH_ENABLE_BIT);
/* Re-enable L1 dcache */
__dc_enable();
@@ -1265,7 +1279,7 @@ void __init arc_cache_init_master(void)
if (is_isa_arcv2() && l2_line_sz && !slc_enable)
arc_slc_disable();
- if (is_isa_arcv2() && ioc_enable)
+ if (is_isa_arcv2() && ioc_exists)
arc_ioc_setup();
if (is_isa_arcv2() && l2_line_sz && slc_enable) {
@@ -1280,7 +1294,7 @@ void __init arc_cache_init_master(void)
/*
* In case of IOC (say IOC+SLC case), pointers above could still be set
* but end up not being relevant as the first function in chain is not
- * called at all for @dma_direct_ops
+ * called at all for devices using coherent DMA.
* arch_sync_dma_for_cpu() -> dma_cache_*() -> __dma_cache_*()
*/
}
diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c
index db203ff69ccf..1525ac00fd02 100644
--- a/arch/arc/mm/dma.c
+++ b/arch/arc/mm/dma.c
@@ -33,7 +33,7 @@ void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
*/
BUG_ON(gfp & __GFP_HIGHMEM);
- page = alloc_pages(gfp, order);
+ page = alloc_pages(gfp | __GFP_ZERO, order);
if (!page)
return NULL;
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c
index c9da6102eb4f..a1d723197084 100644
--- a/arch/arc/mm/fault.c
+++ b/arch/arc/mm/fault.c
@@ -66,7 +66,7 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
struct vm_area_struct *vma = NULL;
struct task_struct *tsk = current;
struct mm_struct *mm = tsk->mm;
- int si_code;
+ int si_code = 0;
int ret;
vm_fault_t fault;
int write = regs->ecr_cause & ECR_C_PROTV_STORE; /* ST/EX */
@@ -142,7 +142,7 @@ good_area:
fault = handle_mm_fault(vma, address, flags);
/* If Pagefault was interrupted by SIGKILL, exit page fault "early" */
- if (unlikely(fatal_signal_pending(current))) {
+ if (fatal_signal_pending(current)) {
if ((fault & VM_FAULT_ERROR) && !(fault & VM_FAULT_RETRY))
up_read(&mm->mmap_sem);
if (user_mode(regs))
diff --git a/arch/arc/mm/init.c b/arch/arc/mm/init.c
index f8fe5668b30f..43bf4c3a1290 100644
--- a/arch/arc/mm/init.c
+++ b/arch/arc/mm/init.c
@@ -78,24 +78,6 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
base, TO_MB(size), !in_use ? "Not used":"");
}
-#ifdef CONFIG_BLK_DEV_INITRD
-static int __init early_initrd(char *p)
-{
- unsigned long start, size;
- char *endp;
-
- start = memparse(p, &endp);
- if (*endp == ',') {
- size = memparse(endp + 1, NULL);
-
- initrd_start = (unsigned long)__va(start);
- initrd_end = (unsigned long)__va(start + size);
- }
- return 0;
-}
-early_param("initrd", early_initrd);
-#endif
-
/*
* First memory setup routine called from setup_arch()
* 1. setup swapper's mm @init_mm
@@ -140,8 +122,11 @@ void __init setup_arch_memory(void)
memblock_reserve(low_mem_start, __pa(_end) - low_mem_start);
#ifdef CONFIG_BLK_DEV_INITRD
- if (initrd_start)
- memblock_reserve(__pa(initrd_start), initrd_end - initrd_start);
+ if (phys_initrd_size) {
+ memblock_reserve(phys_initrd_start, phys_initrd_size);
+ initrd_start = (unsigned long)__va(phys_initrd_start);
+ initrd_end = initrd_start + phys_initrd_size;
+ }
#endif
early_init_fdt_reserve_self();
diff --git a/arch/arc/plat-axs10x/Kconfig b/arch/arc/plat-axs10x/Kconfig
index 4e0df7b7a248..27b9eb97a6bf 100644
--- a/arch/arc/plat-axs10x/Kconfig
+++ b/arch/arc/plat-axs10x/Kconfig
@@ -11,7 +11,7 @@ menuconfig ARC_PLAT_AXS10X
select DW_APB_ICTL
select GPIO_DWAPB
select OF_GPIO
- select MIGHT_HAVE_PCI
+ select HAVE_PCI
select GENERIC_IRQ_CHIP
select GPIOLIB
select AXS101 if ISA_ARCOMPACT
diff --git a/arch/arc/plat-hsdk/Kconfig b/arch/arc/plat-hsdk/Kconfig
index 9356753c2ed8..f25c085b9874 100644
--- a/arch/arc/plat-hsdk/Kconfig
+++ b/arch/arc/plat-hsdk/Kconfig
@@ -11,4 +11,4 @@ menuconfig ARC_SOC_HSDK
select ARC_HAS_ACCL_REGS
select CLK_HSDK
select RESET_HSDK
- select MIGHT_HAVE_PCI
+ select HAVE_PCI