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-rw-r--r--arch/arc/Kconfig42
-rw-r--r--arch/arc/Makefile4
-rw-r--r--arch/arc/configs/axs101_defconfig4
-rw-r--r--arch/arc/configs/axs103_defconfig10
-rw-r--r--arch/arc/configs/axs103_smp_defconfig10
-rw-r--r--arch/arc/configs/nsim_700_defconfig5
-rw-r--r--arch/arc/configs/nsim_hs_defconfig3
-rw-r--r--arch/arc/configs/nsim_hs_smp_defconfig6
-rw-r--r--arch/arc/configs/nsimosci_defconfig2
-rw-r--r--arch/arc/configs/nsimosci_hs_defconfig3
-rw-r--r--arch/arc/configs/nsimosci_hs_smp_defconfig12
-rw-r--r--arch/arc/configs/tb10x_defconfig18
-rw-r--r--arch/arc/configs/vdk_hs38_smp_defconfig2
-rw-r--r--arch/arc/include/asm/arcregs.h35
-rw-r--r--arch/arc/include/asm/dma-mapping.h187
-rw-r--r--arch/arc/include/asm/irq.h2
-rw-r--r--arch/arc/include/asm/irqflags-arcv2.h7
-rw-r--r--arch/arc/include/asm/mcip.h4
-rw-r--r--arch/arc/include/asm/pgtable.h45
-rw-r--r--arch/arc/kernel/intc-arcv2.c41
-rw-r--r--arch/arc/kernel/intc-compact.c3
-rw-r--r--arch/arc/kernel/mcip.c55
-rw-r--r--arch/arc/kernel/setup.c100
-rw-r--r--arch/arc/kernel/smp.c3
-rw-r--r--arch/arc/kernel/time.c8
-rw-r--r--arch/arc/kernel/unwind.c4
-rw-r--r--arch/arc/mm/cache.c4
-rw-r--r--arch/arc/mm/dma.c152
28 files changed, 315 insertions, 456 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 6312f6079..8a188bc17 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -12,8 +12,6 @@ config ARC
select BUILDTIME_EXTABLE_SORT
select COMMON_CLK
select CLONE_BACKWARDS
- # ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
- select DEVTMPFS if !INITRAMFS_SOURCE=""
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
select GENERIC_FIND_FIRST_BIT
@@ -73,9 +71,6 @@ config STACKTRACE_SUPPORT
def_bool y
select STACKTRACE
-config HAVE_LATENCYTOP_SUPPORT
- def_bool y
-
config HAVE_ARCH_TRANSPARENT_HUGEPAGE
def_bool y
depends on ARC_MMU_V4
@@ -278,14 +273,6 @@ config ARC_DCCM_BASE
default "0xA0000000"
depends on ARC_HAS_DCCM
-config ARC_HAS_HW_MPY
- bool "Use Hardware Multiplier (Normal or Faster XMAC)"
- default y
- help
- Influences how gcc generates code for MPY operations.
- If enabled, MPYxx insns are generated, provided by Standard/XMAC
- Multipler. Otherwise software multipy lib is used
-
choice
prompt "MMU Version"
default ARC_MMU_V3 if ARC_CPU_770
@@ -341,6 +328,19 @@ config ARC_PAGE_SIZE_4K
endchoice
+choice
+ prompt "MMU Super Page Size"
+ depends on ISA_ARCV2 && TRANSPARENT_HUGEPAGE
+ default ARC_HUGEPAGE_2M
+
+config ARC_HUGEPAGE_2M
+ bool "2MB"
+
+config ARC_HUGEPAGE_16M
+ bool "16MB"
+
+endchoice
+
if ISA_ARCOMPACT
config ARC_COMPACT_IRQ_LEVELS
@@ -413,7 +413,7 @@ config ARC_HAS_RTC
default n
depends on !SMP
-config ARC_HAS_GRTC
+config ARC_HAS_GFRC
bool "SMP synchronized 64-bit cycle counter"
default y
depends on SMP
@@ -532,14 +532,6 @@ config ARC_DBG_TLB_MISS_COUNT
Counts number of I and D TLB Misses and exports them via Debugfs
The counters can be cleared via Debugfs as well
-if SMP
-
-config ARC_IPI_DBG
- bool "Debug Inter Core interrupts"
- default n
-
-endif
-
endif
config ARC_UBOOT_SUPPORT
@@ -569,6 +561,12 @@ endmenu
endmenu # "ARC Architecture Configuration"
source "mm/Kconfig"
+
+config FORCE_MAX_ZONEORDER
+ int "Maximum zone order"
+ default "12" if ARC_HUGEPAGE_16M
+ default "11"
+
source "net/Kconfig"
source "drivers/Kconfig"
source "fs/Kconfig"
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index aeb190210..c8230f339 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -74,10 +74,6 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
ldflags-$(upto_gcc44) += -marclinux
-ifndef CONFIG_ARC_HAS_HW_MPY
- cflags-y += -mno-mpy
-endif
-
LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
# Modules with short calls might break for calls into builtin-kernel
diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig
index f1ac9818b..5d4e2a07a 100644
--- a/arch/arc/configs/axs101_defconfig
+++ b/arch/arc/configs/axs101_defconfig
@@ -39,6 +39,7 @@ CONFIG_IP_PNP_RARP=y
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -73,7 +74,6 @@ CONFIG_I2C_CHARDEV=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# CONFIG_HWMON is not set
CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_LOGO=y
@@ -91,12 +91,10 @@ CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_EXT3_FS=y
-CONFIG_EXT4_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
-CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig
index 323486d6e..87ee46b23 100644
--- a/arch/arc/configs/axs103_defconfig
+++ b/arch/arc/configs/axs103_defconfig
@@ -39,14 +39,10 @@ CONFIG_IP_PNP_RARP=y
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
-CONFIG_MTD=y
-CONFIG_MTD_CMDLINE_PARTS=y
-CONFIG_MTD_BLOCK=y
-CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_AXS=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_NETDEVICES=y
@@ -78,14 +74,12 @@ CONFIG_I2C_CHARDEV=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# CONFIG_HWMON is not set
CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
# CONFIG_LOGO_LINUX_CLUT224 is not set
-CONFIG_USB=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_HCD_PLATFORM=y
CONFIG_USB_OHCI_HCD=y
@@ -97,12 +91,10 @@ CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_EXT3_FS=y
-CONFIG_EXT4_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
-CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig
index 66191cd04..d80daf4f7 100644
--- a/arch/arc/configs/axs103_smp_defconfig
+++ b/arch/arc/configs/axs103_smp_defconfig
@@ -40,14 +40,10 @@ CONFIG_IP_PNP_RARP=y
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
-CONFIG_MTD=y
-CONFIG_MTD_CMDLINE_PARTS=y
-CONFIG_MTD_BLOCK=y
-CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_AXS=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_NETDEVICES=y
@@ -79,14 +75,12 @@ CONFIG_I2C_CHARDEV=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# CONFIG_HWMON is not set
CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
# CONFIG_LOGO_LINUX_CLUT224 is not set
-CONFIG_USB=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_HCD_PLATFORM=y
CONFIG_USB_OHCI_HCD=y
@@ -98,12 +92,10 @@ CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_EXT3_FS=y
-CONFIG_EXT4_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_TMPFS=y
-CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index 138f9d887..f41095340 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -4,6 +4,7 @@ CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
@@ -26,7 +27,6 @@ CONFIG_ARC_PLAT_SIM=y
CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
@@ -34,6 +34,7 @@ CONFIG_UNIX_DIAG=y
CONFIG_NET_KEY=y
CONFIG_INET=y
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -51,7 +52,6 @@ CONFIG_SERIAL_ARC=y
CONFIG_SERIAL_ARC_CONSOLE=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_IOMMU_SUPPORT is not set
@@ -63,4 +63,3 @@ CONFIG_NFS_FS=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
# CONFIG_DEBUG_PREEMPT is not set
-CONFIG_XZ_DEC=y
diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig
index f68838e80..cfaa33cb5 100644
--- a/arch/arc/configs/nsim_hs_defconfig
+++ b/arch/arc/configs/nsim_hs_defconfig
@@ -35,6 +35,7 @@ CONFIG_UNIX_DIAG=y
CONFIG_NET_KEY=y
CONFIG_INET=y
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -49,7 +50,6 @@ CONFIG_SERIAL_ARC=y
CONFIG_SERIAL_ARC_CONSOLE=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_IOMMU_SUPPORT is not set
@@ -61,4 +61,3 @@ CONFIG_NFS_FS=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
# CONFIG_DEBUG_PREEMPT is not set
-CONFIG_XZ_DEC=y
diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig
index 96bd1c20f..bb2a8dc77 100644
--- a/arch/arc/configs/nsim_hs_smp_defconfig
+++ b/arch/arc/configs/nsim_hs_smp_defconfig
@@ -2,6 +2,7 @@ CONFIG_CROSS_COMPILE="arc-linux-"
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
+# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
@@ -21,13 +22,11 @@ CONFIG_MODULES=y
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
-CONFIG_ARC_BOARD_ML509=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
@@ -35,6 +34,7 @@ CONFIG_UNIX_DIAG=y
CONFIG_NET_KEY=y
CONFIG_INET=y
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -49,7 +49,6 @@ CONFIG_SERIAL_ARC=y
CONFIG_SERIAL_ARC_CONSOLE=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_IOMMU_SUPPORT is not set
@@ -60,4 +59,3 @@ CONFIG_TMPFS=y
CONFIG_NFS_FS=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
-CONFIG_XZ_DEC=y
diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig
index 31e1d9576..646182e93 100644
--- a/arch/arc/configs/nsimosci_defconfig
+++ b/arch/arc/configs/nsimosci_defconfig
@@ -33,6 +33,7 @@ CONFIG_UNIX_DIAG=y
CONFIG_NET_KEY=y
CONFIG_INET=y
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -58,7 +59,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_LOGO=y
# CONFIG_HID is not set
diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig
index fcae66683..ceca25419 100644
--- a/arch/arc/configs/nsimosci_hs_defconfig
+++ b/arch/arc/configs/nsimosci_hs_defconfig
@@ -34,12 +34,12 @@ CONFIG_UNIX_DIAG=y
CONFIG_NET_KEY=y
CONFIG_INET=y
# CONFIG_IPV6 is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
# CONFIG_BLK_DEV is not set
CONFIG_NETDEVICES=y
-CONFIG_NET_OSCI_LAN=y
CONFIG_INPUT_EVDEV=y
# CONFIG_MOUSE_PS2_ALPS is not set
# CONFIG_MOUSE_PS2_LOGIPS2PP is not set
@@ -58,7 +58,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
CONFIG_FB=y
-# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_LOGO=y
# CONFIG_HID is not set
diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig
index b01b65916..4b6da90f6 100644
--- a/arch/arc/configs/nsimosci_hs_smp_defconfig
+++ b/arch/arc/configs/nsimosci_hs_smp_defconfig
@@ -2,6 +2,7 @@ CONFIG_CROSS_COMPILE="arc-linux-"
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
@@ -18,15 +19,11 @@ CONFIG_MODULES=y
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
-CONFIG_ARC_BOARD_ML509=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
-CONFIG_ARC_HAS_LL64=y
-# CONFIG_ARC_HAS_RTSC is not set
CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci_hs_idu"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=y
@@ -40,6 +37,7 @@ CONFIG_INET=y
# CONFIG_INET_LRO is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FIRMWARE_IN_KERNEL is not set
@@ -56,14 +54,11 @@ CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
-CONFIG_NET_OSCI_LAN=y
# CONFIG_WLAN is not set
CONFIG_INPUT_EVDEV=y
CONFIG_MOUSE_PS2_TOUCHKIT=y
# CONFIG_SERIO_SERPORT is not set
-CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_ARC_PS2=y
-CONFIG_VT_HW_CONSOLE_BINDING=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
@@ -75,9 +70,6 @@ CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
CONFIG_FB=y
-CONFIG_ARCPGU_RGB888=y
-CONFIG_ARCPGU_DISPTYPE=0
-# CONFIG_VGA_CONSOLE is not set
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_LOGO=y
# CONFIG_HID is not set
diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig
index 3b4dc9ceb..9b342eaf9 100644
--- a/arch/arc/configs/tb10x_defconfig
+++ b/arch/arc/configs/tb10x_defconfig
@@ -3,6 +3,7 @@ CONFIG_CROSS_COMPILE="arc-linux-"
CONFIG_DEFAULT_HOSTNAME="tb10x"
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_HIGH_RES_TIMERS=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
@@ -26,12 +27,10 @@ CONFIG_MODULE_UNLOAD=y
# CONFIG_BLOCK is not set
CONFIG_ARC_PLAT_TB10X=y
CONFIG_ARC_CACHE_LINE_SHIFT=5
-CONFIG_ARC_STACK_NONEXEC=y
CONFIG_HZ=250
CONFIG_ARC_BUILTIN_DTB_NAME="abilis_tb100_dvk"
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_COMPACTION is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
@@ -44,8 +43,8 @@ CONFIG_IP_MULTICAST=y
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
+CONFIG_DEVTMPFS=y
# CONFIG_FIRMWARE_IN_KERNEL is not set
-CONFIG_PROC_DEVICETREE=y
CONFIG_NETDEVICES=y
# CONFIG_NET_CADENCE is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
@@ -55,9 +54,6 @@ CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
CONFIG_STMMAC_ETH=y
-CONFIG_STMMAC_DEBUG_FS=y
-CONFIG_STMMAC_DA=y
-CONFIG_STMMAC_CHAINED=y
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_WLAN is not set
# CONFIG_INPUT is not set
@@ -91,7 +87,6 @@ CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_LEDS_TRIGGER_TRANSIENT=y
CONFIG_DMADEVICES=y
CONFIG_DW_DMAC=y
-CONFIG_NET_DMA=y
CONFIG_ASYNC_TX_DMA=y
# CONFIG_IOMMU_SUPPORT is not set
# CONFIG_DNOTIFY is not set
@@ -100,17 +95,16 @@ CONFIG_TMPFS=y
CONFIG_CONFIGFS_FS=y
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_DEBUG_INFO=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
-CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_FS=y
CONFIG_HEADERS_CHECK=y
CONFIG_DEBUG_SECTION_MISMATCH=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
-CONFIG_DEBUG_INFO=y
-CONFIG_DEBUG_MEMORY_INIT=y
-CONFIG_DEBUG_STACKOVERFLOW=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig
index f36c047b3..735985974 100644
--- a/arch/arc/configs/vdk_hs38_smp_defconfig
+++ b/arch/arc/configs/vdk_hs38_smp_defconfig
@@ -16,7 +16,7 @@ CONFIG_ARC_PLAT_AXS10X=y
CONFIG_AXS103=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
-# CONFIG_ARC_HAS_GRTC is not set
+# CONFIG_ARC_HAS_GFRC is not set
CONFIG_ARC_UBOOT_SUPPORT=y
CONFIG_ARC_BUILTIN_DTB_NAME="vdk_hs38_smp"
CONFIG_PREEMPT=y
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index 7fac7d85e..f9f4c6f59 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -10,7 +10,8 @@
#define _ASM_ARC_ARCREGS_H
/* Build Configuration Registers */
-#define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */
+#define ARC_REG_AUX_DCCM 0x18 /* DCCM Base Addr ARCv2 */
+#define ARC_REG_DCCM_BASE_BUILD 0x61 /* DCCM Base Addr ARCompact */
#define ARC_REG_CRC_BCR 0x62
#define ARC_REG_VECBASE_BCR 0x68
#define ARC_REG_PERIBASE_BCR 0x69
@@ -18,10 +19,10 @@
#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */
#define ARC_REG_FP_V2_BCR 0xc8 /* ARCv2 FPU */
#define ARC_REG_SLC_BCR 0xce
-#define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */
+#define ARC_REG_DCCM_BUILD 0x74 /* DCCM size (common) */
#define ARC_REG_TIMERS_BCR 0x75
#define ARC_REG_AP_BCR 0x76
-#define ARC_REG_ICCM_BCR 0x78
+#define ARC_REG_ICCM_BUILD 0x78 /* ICCM size (common) */
#define ARC_REG_XY_MEM_BCR 0x79
#define ARC_REG_MAC_BCR 0x7a
#define ARC_REG_MUL_BCR 0x7b
@@ -36,6 +37,7 @@
#define ARC_REG_IRQ_BCR 0xF3
#define ARC_REG_SMART_BCR 0xFF
#define ARC_REG_CLUSTER_BCR 0xcf
+#define ARC_REG_AUX_ICCM 0x208 /* ICCM Base Addr (ARCv2) */
/* status32 Bits Positions */
#define STATUS_AE_BIT 5 /* Exception active */
@@ -246,7 +248,7 @@ struct bcr_perip {
#endif
};
-struct bcr_iccm {
+struct bcr_iccm_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int base:16, pad:5, sz:3, ver:8;
#else
@@ -254,17 +256,15 @@ struct bcr_iccm {
#endif
};
-/* DCCM Base Address Register: ARC_REG_DCCMBASE_BCR */
-struct bcr_dccm_base {
+struct bcr_iccm_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
- unsigned int addr:24, ver:8;
+ unsigned int pad:8, sz11:4, sz01:4, sz10:4, sz00:4, ver:8;
#else
- unsigned int ver:8, addr:24;
+ unsigned int ver:8, sz00:4, sz10:4, sz01:4, sz11:4, pad:8;
#endif
};
-/* DCCM RAM Configuration Register: ARC_REG_DCCM_BCR */
-struct bcr_dccm {
+struct bcr_dccm_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int res:21, sz:3, ver:8;
#else
@@ -272,6 +272,14 @@ struct bcr_dccm {
#endif
};
+struct bcr_dccm_arcv2 {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned int pad2:12, cyc:3, pad1:1, sz1:4, sz0:4, ver:8;
+#else
+ unsigned int ver:8, sz0:4, sz1:4, pad1:1, cyc:3, pad2:12;
+#endif
+};
+
/* ARCompact: Both SP and DP FPU BCRs have same format */
struct bcr_fp_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
@@ -315,9 +323,9 @@ struct bcr_bpu_arcv2 {
struct bcr_generic {
#ifdef CONFIG_CPU_BIG_ENDIAN
- unsigned int pad:24, ver:8;
+ unsigned int info:24, ver:8;
#else
- unsigned int ver:8, pad:24;
+ unsigned int ver:8, info:24;
#endif
};
@@ -349,14 +357,13 @@ struct cpuinfo_arc {
struct cpuinfo_arc_bpu bpu;
struct bcr_identity core;
struct bcr_isa isa;
- struct bcr_timer timers;
unsigned int vec_base;
struct cpuinfo_arc_ccm iccm, dccm;
struct {
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
fpu_sp:1, fpu_dp:1, pad2:6,
debug:1, ap:1, smart:1, rtt:1, pad3:4,
- pad4:8;
+ timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;
} extn;
struct bcr_mpy extn_mpy;
struct bcr_extn_xymem extn_xymem;
diff --git a/arch/arc/include/asm/dma-mapping.h b/arch/arc/include/asm/dma-mapping.h
index 2d28ba939..660205414 100644
--- a/arch/arc/include/asm/dma-mapping.h
+++ b/arch/arc/include/asm/dma-mapping.h
@@ -11,192 +11,11 @@
#ifndef ASM_ARC_DMA_MAPPING_H
#define ASM_ARC_DMA_MAPPING_H
-#include <asm-generic/dma-coherent.h>
-#include <asm/cacheflush.h>
+extern struct dma_map_ops arc_dma_ops;
-void *dma_alloc_noncoherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp);
-
-void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle);
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp);
-
-void dma_free_coherent(struct device *dev, size_t size, void *kvaddr,
- dma_addr_t dma_handle);
-
-/* drivers/base/dma-mapping.c */
-extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
- void *cpu_addr, dma_addr_t dma_addr, size_t size);
-extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
- void *cpu_addr, dma_addr_t dma_addr,
- size_t size);
-
-#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s)
-#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s)
-
-/*
- * streaming DMA Mapping API...
- * CPU accesses page via normal paddr, thus needs to explicitly made
- * consistent before each use
- */
-
-static inline void __inline_dma_cache_sync(unsigned long paddr, size_t size,
- enum dma_data_direction dir)
-{
- switch (dir) {
- case DMA_FROM_DEVICE:
- dma_cache_inv(paddr, size);
- break;
- case DMA_TO_DEVICE:
- dma_cache_wback(paddr, size);
- break;
- case DMA_BIDIRECTIONAL:
- dma_cache_wback_inv(paddr, size);
- break;
- default:
- pr_err("Invalid DMA dir [%d] for OP @ %lx\n", dir, paddr);
- }
-}
-
-void __arc_dma_cache_sync(unsigned long paddr, size_t size,
- enum dma_data_direction dir);
-
-#define _dma_cache_sync(addr, sz, dir) \
-do { \
- if (__builtin_constant_p(dir)) \
- __inline_dma_cache_sync(addr, sz, dir); \
- else \
- __arc_dma_cache_sync(addr, sz, dir); \
-} \
-while (0);
-
-static inline dma_addr_t
-dma_map_single(struct device *dev, void *cpu_addr, size_t size,
- enum dma_data_direction dir)
-{
- _dma_cache_sync((unsigned long)cpu_addr, size, dir);
- return (dma_addr_t)cpu_addr;
-}
-
-static inline void
-dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size, enum dma_data_direction dir)
-{
-}
-
-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)
-{
- unsigned long paddr = page_to_phys(page) + offset;
- return dma_map_single(dev, (void *)paddr, size, dir);
-}
-
-static inline void
-dma_unmap_page(struct device *dev, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction dir)
-{
-}
-
-static inline int
-dma_map_sg(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction dir)
-{
- struct scatterlist *s;
- int i;
-
- for_each_sg(sg, s, nents, i)
- s->dma_address = dma_map_page(dev, sg_page(s), s->offset,
- s->length, dir);
-
- return nents;
-}
-
-static inline void
-dma_unmap_sg(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction dir)
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
- struct scatterlist *s;
- int i;
-
- for_each_sg(sg, s, nents, i)
- dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir);
-}
-
-static inline void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction dir)
-{
- _dma_cache_sync(dma_handle, size, DMA_FROM_DEVICE);
-}
-
-static inline void
-dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction dir)
-{
- _dma_cache_sync(dma_handle, size, DMA_TO_DEVICE);
-}
-
-static inline void
-dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- _dma_cache_sync(dma_handle + offset, size, DMA_FROM_DEVICE);
-}
-
-static inline void
-dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
- unsigned long offset, size_t size,
- enum dma_data_direction direction)
-{
- _dma_cache_sync(dma_handle + offset, size, DMA_TO_DEVICE);
-}
-
-static inline void
-dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nelems,
- enum dma_data_direction dir)
-{
- int i;
- struct scatterlist *sg;
-
- for_each_sg(sglist, sg, nelems, i)
- _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir);
-}
-
-static inline void
-dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist,
- int nelems, enum dma_data_direction dir)
-{
- int i;
- struct scatterlist *sg;
-
- for_each_sg(sglist, sg, nelems, i)
- _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir);
-}
-
-static inline int dma_supported(struct device *dev, u64 dma_mask)
-{
- /* Support 32 bit DMA mask exclusively */
- return dma_mask == DMA_BIT_MASK(32);
-}
-
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return 0;
-}
-
-static inline int dma_set_mask(struct device *dev, u64 dma_mask)
-{
- if (!dev->dma_mask || !dma_supported(dev, dma_mask))
- return -EIO;
-
- *dev->dma_mask = dma_mask;
-
- return 0;
+ return &arc_dma_ops;
}
#endif
diff --git a/arch/arc/include/asm/irq.h b/arch/arc/include/asm/irq.h
index 4fd7d62a6..49014f0ef 100644
--- a/arch/arc/include/asm/irq.h
+++ b/arch/arc/include/asm/irq.h
@@ -16,11 +16,9 @@
#ifdef CONFIG_ISA_ARCOMPACT
#define TIMER0_IRQ 3
#define TIMER1_IRQ 4
-#define IPI_IRQ (NR_CPU_IRQS-1) /* dummy to enable SMP build for up hardware */
#else
#define TIMER0_IRQ 16
#define TIMER1_IRQ 17
-#define IPI_IRQ 19
#endif
#include <linux/interrupt.h>
diff --git a/arch/arc/include/asm/irqflags-arcv2.h b/arch/arc/include/asm/irqflags-arcv2.h
index 68b609234..37c2f751e 100644
--- a/arch/arc/include/asm/irqflags-arcv2.h
+++ b/arch/arc/include/asm/irqflags-arcv2.h
@@ -31,8 +31,11 @@
/* Was Intr taken in User Mode */
#define AUX_IRQ_ACT_BIT_U 31
-/* 0 is highest level, but taken by FIRQs, if present in design */
-#define ARCV2_IRQ_DEF_PRIO 0
+/*
+ * User space should be interruptable even by lowest prio interrupt
+ * Safe even if actual interrupt priorities is fewer or even one
+ */
+#define ARCV2_IRQ_DEF_PRIO 15
/* seed value for status register */
#define ISA_INIT_STATUS_BITS (STATUS_IE_MASK | STATUS_AD_MASK | \
diff --git a/arch/arc/include/asm/mcip.h b/arch/arc/include/asm/mcip.h
index 46f4e5351..847e3bbe3 100644
--- a/arch/arc/include/asm/mcip.h
+++ b/arch/arc/include/asm/mcip.h
@@ -39,8 +39,8 @@ struct mcip_cmd {
#define CMD_DEBUG_SET_MASK 0x34
#define CMD_DEBUG_SET_SELECT 0x36
-#define CMD_GRTC_READ_LO 0x42
-#define CMD_GRTC_READ_HI 0x43
+#define CMD_GFRC_READ_LO 0x42
+#define CMD_GFRC_READ_HI 0x43
#define CMD_IDU_ENABLE 0x71
#define CMD_IDU_DISABLE 0x72
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 57af2f05a..d426d4215 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -179,37 +179,44 @@
#define __S111 PAGE_U_X_W_R
/****************************************************************
- * Page Table Lookup split
+ * 2 tier (PGD:PTE) software page walker
*
- * We implement 2 tier paging and since this is all software, we are free
- * to customize the span of a PGD / PTE entry to suit us
- *
- * 32 bit virtual address
+ * [31] 32 bit virtual address [0]
* -------------------------------------------------------
- * | BITS_FOR_PGD | BITS_FOR_PTE | BITS_IN_PAGE |
+ * | | <------------ PGDIR_SHIFT ----------> |
+ * | | |
+ * | BITS_FOR_PGD | BITS_FOR_PTE | <-- PAGE_SHIFT --> |
* -------------------------------------------------------
* | | |
* | | --> off in page frame
- * | |
* | ---> index into Page Table
- * |
* ----> index into Page Directory
+ *
+ * In a single page size configuration, only PAGE_SHIFT is fixed
+ * So both PGD and PTE sizing can be tweaked
+ * e.g. 8K page (PAGE_SHIFT 13) can have
+ * - PGDIR_SHIFT 21 -> 11:8:13 address split
+ * - PGDIR_SHIFT 24 -> 8:11:13 address split
+ *
+ * If Super Page is configured, PGDIR_SHIFT becomes fixed too,
+ * so the sizing flexibility is gone.
*/
-#define BITS_IN_PAGE PAGE_SHIFT
-
-/* Optimal Sizing of Pg Tbl - based on MMU page size */
-#if defined(CONFIG_ARC_PAGE_SIZE_8K)
-#define BITS_FOR_PTE 8 /* 11:8:13 */
-#elif defined(CONFIG_ARC_PAGE_SIZE_16K)
-#define BITS_FOR_PTE 8 /* 10:8:14 */
-#elif defined(CONFIG_ARC_PAGE_SIZE_4K)
-#define BITS_FOR_PTE 9 /* 11:9:12 */
+#if defined(CONFIG_ARC_HUGEPAGE_16M)
+#define PGDIR_SHIFT 24
+#elif defined(CONFIG_ARC_HUGEPAGE_2M)
+#define PGDIR_SHIFT 21
+#else
+/*
+ * Only Normal page support so "hackable" (see comment above)
+ * Default value provides 11:8:13 (8K), 11:9:12 (4K)
+ */
+#define PGDIR_SHIFT 21
#endif
-#define BITS_FOR_PGD (32 - BITS_FOR_PTE - BITS_IN_PAGE)
+#define BITS_FOR_PTE (PGDIR_SHIFT - PAGE_SHIFT)
+#define BITS_FOR_PGD (32 - PGDIR_SHIFT)
-#define PGDIR_SHIFT (32 - BITS_FOR_PGD)
#define PGDIR_SIZE (1UL << PGDIR_SHIFT) /* vaddr span, not PDG sz */
#define PGDIR_MASK (~(PGDIR_SIZE-1))
diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
index 0394f9f61..942526322 100644
--- a/arch/arc/kernel/intc-arcv2.c
+++ b/arch/arc/kernel/intc-arcv2.c
@@ -14,6 +14,8 @@
#include <linux/irqchip.h>
#include <asm/irq.h>
+static int irq_prio;
+
/*
* Early Hardware specific Interrupt setup
* -Called very early (start_kernel -> setup_arch -> setup_processor)
@@ -24,6 +26,14 @@ void arc_init_IRQ(void)
{
unsigned int tmp;
+ struct irq_build {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned int pad:3, firq:1, prio:4, exts:8, irqs:8, ver:8;
+#else
+ unsigned int ver:8, irqs:8, exts:8, prio:4, firq:1, pad:3;
+#endif
+ } irq_bcr;
+
struct aux_irq_ctrl {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int res3:18, save_idx_regs:1, res2:1,
@@ -46,28 +56,25 @@ void arc_init_IRQ(void)
WRITE_AUX(AUX_IRQ_CTRL, ictrl);
- /* setup status32, don't enable intr yet as kernel doesn't want */
- tmp = read_aux_reg(0xa);
- tmp |= ISA_INIT_STATUS_BITS;
- tmp &= ~STATUS_IE_MASK;
- asm volatile("flag %0 \n"::"r"(tmp));
-
/*
* ARCv2 core intc provides multiple interrupt priorities (upto 16).
* Typical builds though have only two levels (0-high, 1-low)
* Linux by default uses lower prio 1 for most irqs, reserving 0 for
* NMI style interrupts in future (say perf)
- *
- * Read the intc BCR to confirm that Linux default priority is avail
- * in h/w
- *
- * Note:
- * IRQ_BCR[27..24] contains N-1 (for N priority levels) and prio level
- * is 0 based.
*/
- tmp = (read_aux_reg(ARC_REG_IRQ_BCR) >> 24 ) & 0xF;
- if (ARCV2_IRQ_DEF_PRIO > tmp)
- panic("Linux default irq prio incorrect\n");
+
+ READ_BCR(ARC_REG_IRQ_BCR, irq_bcr);
+
+ irq_prio = irq_bcr.prio; /* Encoded as N-1 for N levels */
+ pr_info("archs-intc\t: %d priority levels (default %d)%s\n",
+ irq_prio + 1, irq_prio,
+ irq_bcr.firq ? " FIRQ (not used)":"");
+
+ /* setup status32, don't enable intr yet as kernel doesn't want */
+ tmp = read_aux_reg(0xa);
+ tmp |= STATUS_AD_MASK | (irq_prio << 1);
+ tmp &= ~STATUS_IE_MASK;
+ asm volatile("flag %0 \n"::"r"(tmp));
}
static void arcv2_irq_mask(struct irq_data *data)
@@ -86,7 +93,7 @@ void arcv2_irq_enable(struct irq_data *data)
{
/* set default priority */
write_aux_reg(AUX_IRQ_SELECT, data->irq);
- write_aux_reg(AUX_IRQ_PRIORITY, ARCV2_IRQ_DEF_PRIO);
+ write_aux_reg(AUX_IRQ_PRIORITY, irq_prio);
/*
* hw auto enables (linux unmask) all by default
diff --git a/arch/arc/kernel/intc-compact.c b/arch/arc/kernel/intc-compact.c
index 06bcedf19..224d1c3aa 100644
--- a/arch/arc/kernel/intc-compact.c
+++ b/arch/arc/kernel/intc-compact.c
@@ -81,9 +81,6 @@ static int arc_intc_domain_map(struct irq_domain *d, unsigned int irq,
{
switch (irq) {
case TIMER0_IRQ:
-#ifdef CONFIG_SMP
- case IPI_IRQ:
-#endif
irq_set_chip_and_handler(irq, &onchip_intc, handle_percpu_irq);
break;
default:
diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c
index 30d806ce0..c41c364b9 100644
--- a/arch/arc/kernel/mcip.c
+++ b/arch/arc/kernel/mcip.c
@@ -15,6 +15,7 @@
#include <asm/mcip.h>
#include <asm/setup.h>
+#define IPI_IRQ 19
#define SOFTIRQ_IRQ 21
static char smp_cpuinfo_buf[128];
@@ -39,39 +40,26 @@ static void mcip_ipi_send(int cpu)
return;
}
+ raw_spin_lock_irqsave(&mcip_lock, flags);
+
/*
- * NOTE: We must spin here if the other cpu hasn't yet
- * serviced a previous message. This can burn lots
- * of time, but we MUST follows this protocol or
- * ipi messages can be lost!!!
- * Also, we must release the lock in this loop because
- * the other side may get to this same loop and not
- * be able to ack -- thus causing deadlock.
+ * If receiver already has a pending interrupt, elide sending this one.
+ * Linux cross core calling works well with concurrent IPIs
+ * coalesced into one
+ * see arch/arc/kernel/smp.c: ipi_send_msg_one()
*/
+ __mcip_cmd(CMD_INTRPT_READ_STATUS, cpu);
+ ipi_was_pending = read_aux_reg(ARC_REG_MCIP_READBACK);
+ if (!ipi_was_pending)
+ __mcip_cmd(CMD_INTRPT_GENERATE_IRQ, cpu);
- do {
- raw_spin_lock_irqsave(&mcip_lock, flags);
- __mcip_cmd(CMD_INTRPT_READ_STATUS, cpu);
- ipi_was_pending = read_aux_reg(ARC_REG_MCIP_READBACK);
- if (ipi_was_pending == 0)
- break; /* break out but keep lock */
- raw_spin_unlock_irqrestore(&mcip_lock, flags);
- } while (1);
-
- __mcip_cmd(CMD_INTRPT_GENERATE_IRQ, cpu);
raw_spin_unlock_irqrestore(&mcip_lock, flags);
-
-#ifdef CONFIG_ARC_IPI_DBG
- if (ipi_was_pending)
- pr_info("IPI ACK delayed from cpu %d\n", cpu);
-#endif
}
static void mcip_ipi_clear(int irq)
{
unsigned int cpu, c;
unsigned long flags;
- unsigned int __maybe_unused copy;
if (unlikely(irq == SOFTIRQ_IRQ)) {
arc_softirq_clear(irq);
@@ -83,7 +71,7 @@ static void mcip_ipi_clear(int irq)
/* Who sent the IPI */
__mcip_cmd(CMD_INTRPT_CHECK_SOURCE, 0);
- copy = cpu = read_aux_reg(ARC_REG_MCIP_READBACK); /* 1,2,4,8... */
+ cpu = read_aux_reg(ARC_REG_MCIP_READBACK); /* 1,2,4,8... */
/*
* In rare case, multiple concurrent IPIs sent to same target can
@@ -97,12 +85,6 @@ static void mcip_ipi_clear(int irq)
} while (cpu);
raw_spin_unlock_irqrestore(&mcip_lock, flags);
-
-#ifdef CONFIG_ARC_IPI_DBG
- if (c != __ffs(copy))
- pr_info("IPIs from %x coalesced to %x\n",
- copy, raw_smp_processor_id());
-#endif
}
static void mcip_probe_n_setup(void)
@@ -111,13 +93,13 @@ static void mcip_probe_n_setup(void)
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad3:8,
idu:1, llm:1, num_cores:6,
- iocoh:1, grtc:1, dbg:1, pad2:1,
+ iocoh:1, gfrc:1, dbg:1, pad2:1,
msg:1, sem:1, ipi:1, pad:1,
ver:8;
#else
unsigned int ver:8,
pad:1, ipi:1, sem:1, msg:1,
- pad2:1, dbg:1, grtc:1, iocoh:1,
+ pad2:1, dbg:1, gfrc:1, iocoh:1,
num_cores:6, llm:1, idu:1,
pad3:8;
#endif
@@ -126,12 +108,13 @@ static void mcip_probe_n_setup(void)
READ_BCR(ARC_REG_MCIP_BCR, mp);
sprintf(smp_cpuinfo_buf,
- "Extn [SMP]\t: ARConnect (v%d): %d cores with %s%s%s%s\n",
+ "Extn [SMP]\t: ARConnect (v%d): %d cores with %s%s%s%s%s\n",
mp.ver, mp.num_cores,
IS_AVAIL1(mp.ipi, "IPI "),
IS_AVAIL1(mp.idu, "IDU "),
+ IS_AVAIL1(mp.llm, "LLM "),
IS_AVAIL1(mp.dbg, "DEBUG "),
- IS_AVAIL1(mp.grtc, "GRTC"));
+ IS_AVAIL1(mp.gfrc, "GFRC"));
idu_detected = mp.idu;
@@ -140,8 +123,8 @@ static void mcip_probe_n_setup(void)
__mcip_cmd_data(CMD_DEBUG_SET_MASK, 0xf, 0xf);
}
- if (IS_ENABLED(CONFIG_ARC_HAS_GRTC) && !mp.grtc)
- panic("kernel trying to use non-existent GRTC\n");
+ if (IS_ENABLED(CONFIG_ARC_HAS_GFRC) && !mp.gfrc)
+ panic("kernel trying to use non-existent GFRC\n");
}
struct plat_smp_ops plat_smp_ops = {
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index e1b87444e..cdc821df1 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -42,9 +42,57 @@ struct task_struct *_current_task[NR_CPUS]; /* For stack switching */
struct cpuinfo_arc cpuinfo_arc700[NR_CPUS];
+static void read_decode_ccm_bcr(struct cpuinfo_arc *cpu)
+{
+ if (is_isa_arcompact()) {
+ struct bcr_iccm_arcompact iccm;
+ struct bcr_dccm_arcompact dccm;
+
+ READ_BCR(ARC_REG_ICCM_BUILD, iccm);
+ if (iccm.ver) {
+ cpu->iccm.sz = 4096 << iccm.sz; /* 8K to 512K */
+ cpu->iccm.base_addr = iccm.base << 16;
+ }
+
+ READ_BCR(ARC_REG_DCCM_BUILD, dccm);
+ if (dccm.ver) {
+ unsigned long base;
+ cpu->dccm.sz = 2048 << dccm.sz; /* 2K to 256K */
+
+ base = read_aux_reg(ARC_REG_DCCM_BASE_BUILD);
+ cpu->dccm.base_addr = base & ~0xF;
+ }
+ } else {
+ struct bcr_iccm_arcv2 iccm;
+ struct bcr_dccm_arcv2 dccm;
+ unsigned long region;
+
+ READ_BCR(ARC_REG_ICCM_BUILD, iccm);
+ if (iccm.ver) {
+ cpu->iccm.sz = 256 << iccm.sz00; /* 512B to 16M */
+ if (iccm.sz00 == 0xF && iccm.sz01 > 0)
+ cpu->iccm.sz <<= iccm.sz01;
+
+ region = read_aux_reg(ARC_REG_AUX_ICCM);
+ cpu->iccm.base_addr = region & 0xF0000000;
+ }
+
+ READ_BCR(ARC_REG_DCCM_BUILD, dccm);
+ if (dccm.ver) {
+ cpu->dccm.sz = 256 << dccm.sz0;
+ if (dccm.sz0 == 0xF && dccm.sz1 > 0)
+ cpu->dccm.sz <<= dccm.sz1;
+
+ region = read_aux_reg(ARC_REG_AUX_DCCM);
+ cpu->dccm.base_addr = region & 0xF0000000;
+ }
+ }
+}
+
static void read_arc_build_cfg_regs(void)
{
struct bcr_perip uncached_space;
+ struct bcr_timer timer;
struct bcr_generic bcr;
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
unsigned long perip_space;
@@ -53,7 +101,11 @@ static void read_arc_build_cfg_regs(void)
READ_BCR(AUX_IDENTITY, cpu->core);
READ_BCR(ARC_REG_ISA_CFG_BCR, cpu->isa);
- READ_BCR(ARC_REG_TIMERS_BCR, cpu->timers);
+ READ_BCR(ARC_REG_TIMERS_BCR, timer);
+ cpu->extn.timer0 = timer.t0;
+ cpu->extn.timer1 = timer.t1;
+ cpu->extn.rtc = timer.rtc;
+
cpu->vec_base = read_aux_reg(AUX_INTR_VEC_BASE);
READ_BCR(ARC_REG_D_UNCACH_BCR, uncached_space);
@@ -71,36 +123,11 @@ static void read_arc_build_cfg_regs(void)
cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0; /* 1,3 */
cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0;
cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */
-
- /* Note that we read the CCM BCRs independent of kernel config
- * This is to catch the cases where user doesn't know that
- * CCMs are present in hardware build
- */
- {
- struct bcr_iccm iccm;
- struct bcr_dccm dccm;
- struct bcr_dccm_base dccm_base;
- unsigned int bcr_32bit_val;
-
- bcr_32bit_val = read_aux_reg(ARC_REG_ICCM_BCR);
- if (bcr_32bit_val) {
- iccm = *((struct bcr_iccm *)&bcr_32bit_val);
- cpu->iccm.base_addr = iccm.base << 16;
- cpu->iccm.sz = 0x2000 << (iccm.sz - 1);
- }
-
- bcr_32bit_val = read_aux_reg(ARC_REG_DCCM_BCR);
- if (bcr_32bit_val) {
- dccm = *((struct bcr_dccm *)&bcr_32bit_val);
- cpu->dccm.sz = 0x800 << (dccm.sz);
-
- READ_BCR(ARC_REG_DCCMBASE_BCR, dccm_base);
- cpu->dccm.base_addr = dccm_base.addr << 8;
- }
- }
-
READ_BCR(ARC_REG_XY_MEM_BCR, cpu->extn_xymem);
+ /* Read CCM BCRs for boot reporting even if not enabled in Kconfig */
+ read_decode_ccm_bcr(cpu);
+
read_decode_mmu_bcr();
read_decode_cache_bcr();
@@ -208,9 +235,9 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
(unsigned int)(arc_get_core_freq() / 10000) % 100);
n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
- IS_AVAIL1(cpu->timers.t0, "Timer0 "),
- IS_AVAIL1(cpu->timers.t1, "Timer1 "),
- IS_AVAIL2(cpu->timers.rtc, "64-bit RTC ",
+ IS_AVAIL1(cpu->extn.timer0, "Timer0 "),
+ IS_AVAIL1(cpu->extn.timer1, "Timer1 "),
+ IS_AVAIL2(cpu->extn.rtc, "Local-64-bit-Ctr ",
CONFIG_ARC_HAS_RTC));
n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
@@ -232,8 +259,6 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
n += scnprintf(buf + n, len - n, "mpy[opt %d] ", opt);
}
- n += scnprintf(buf + n, len - n, "%s",
- IS_USED_CFG(CONFIG_ARC_HAS_HW_MPY));
}
n += scnprintf(buf + n, len - n, "%s%s%s%s%s%s%s%s\n",
@@ -293,13 +318,13 @@ static void arc_chk_core_config(void)
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
int fpu_enabled;
- if (!cpu->timers.t0)
+ if (!cpu->extn.timer0)
panic("Timer0 is not present!\n");
- if (!cpu->timers.t1)
+ if (!cpu->extn.timer1)
panic("Timer1 is not present!\n");
- if (IS_ENABLED(CONFIG_ARC_HAS_RTC) && !cpu->timers.rtc)
+ if (IS_ENABLED(CONFIG_ARC_HAS_RTC) && !cpu->extn.rtc)
panic("RTC is not present\n");
#ifdef CONFIG_ARC_HAS_DCCM
@@ -334,6 +359,7 @@ static void arc_chk_core_config(void)
panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n");
if (is_isa_arcv2() && IS_ENABLED(CONFIG_SMP) && cpu->isa.atomic &&
+ IS_ENABLED(CONFIG_ARC_HAS_LLSC) &&
!IS_ENABLED(CONFIG_ARC_STAR_9000923308))
panic("llock/scond livelock workaround missing\n");
}
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index ef6e9e15b..424e937da 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -336,11 +336,8 @@ irqreturn_t do_IPI(int irq, void *dev_id)
int rc;
rc = __do_IPI(msg);
-#ifdef CONFIG_ARC_IPI_DBG
- /* IPI received but no valid @msg */
if (rc)
pr_info("IPI with bogus msg %ld in %ld\n", msg, copy);
-#endif
pending &= ~(1U << msg);
} while (pending);
diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c
index dfad287f1..156d9833f 100644
--- a/arch/arc/kernel/time.c
+++ b/arch/arc/kernel/time.c
@@ -62,7 +62,7 @@
/********** Clock Source Device *********/
-#ifdef CONFIG_ARC_HAS_GRTC
+#ifdef CONFIG_ARC_HAS_GFRC
static int arc_counter_setup(void)
{
@@ -83,10 +83,10 @@ static cycle_t arc_counter_read(struct clocksource *cs)
local_irq_save(flags);
- __mcip_cmd(CMD_GRTC_READ_LO, 0);
+ __mcip_cmd(CMD_GFRC_READ_LO, 0);
stamp.l = read_aux_reg(ARC_REG_MCIP_READBACK);
- __mcip_cmd(CMD_GRTC_READ_HI, 0);
+ __mcip_cmd(CMD_GFRC_READ_HI, 0);
stamp.h = read_aux_reg(ARC_REG_MCIP_READBACK);
local_irq_restore(flags);
@@ -95,7 +95,7 @@ static cycle_t arc_counter_read(struct clocksource *cs)
}
static struct clocksource arc_counter = {
- .name = "ARConnect GRTC",
+ .name = "ARConnect GFRC",
.rating = 400,
.read = arc_counter_read,
.mask = CLOCKSOURCE_MASK(64),
diff --git a/arch/arc/kernel/unwind.c b/arch/arc/kernel/unwind.c
index 5eb707640..0587bf121 100644
--- a/arch/arc/kernel/unwind.c
+++ b/arch/arc/kernel/unwind.c
@@ -385,8 +385,8 @@ void *unwind_add_table(struct module *module, const void *table_start,
return NULL;
init_unwind_table(table, module->name,
- module->module_core, module->core_size,
- module->module_init, module->init_size,
+ module->core_layout.base, module->core_layout.size,
+ module->init_layout.base, module->init_layout.size,
table_start, table_size,
NULL, 0);
diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
index ff7ff6cbb..b65f797e9 100644
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@ -617,7 +617,7 @@ void flush_dcache_page(struct page *page)
*/
if (!mapping_mapped(mapping)) {
clear_bit(PG_dc_clean, &page->flags);
- } else if (page_mapped(page)) {
+ } else if (page_mapcount(page)) {
/* kernel reading from page with U-mapping */
phys_addr_t paddr = (unsigned long)page_address(page);
@@ -857,7 +857,7 @@ void copy_user_highpage(struct page *to, struct page *from,
* For !VIPT cache, all of this gets compiled out as
* addr_not_cache_congruent() is 0
*/
- if (page_mapped(from) && addr_not_cache_congruent(kfrom, u_vaddr)) {
+ if (page_mapcount(from) && addr_not_cache_congruent(kfrom, u_vaddr)) {
__flush_dcache_page((unsigned long)kfrom, u_vaddr);
clean_src_k_mappings = 1;
}
diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c
index 29a46bb19..01eaf88bf 100644
--- a/arch/arc/mm/dma.c
+++ b/arch/arc/mm/dma.c
@@ -17,18 +17,14 @@
*/
#include <linux/dma-mapping.h>
-#include <linux/dma-debug.h>
-#include <linux/export.h>
#include <asm/cache.h>
#include <asm/cacheflush.h>
-/*
- * Helpers for Coherent DMA API.
- */
-void *dma_alloc_noncoherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp)
+
+static void *arc_dma_alloc(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs)
{
- void *paddr;
+ void *paddr, *kvaddr;
/* This is linear addr (0x8000_0000 based) */
paddr = alloc_pages_exact(size, gfp);
@@ -38,22 +34,6 @@ void *dma_alloc_noncoherent(struct device *dev, size_t size,
/* This is bus address, platform dependent */
*dma_handle = (dma_addr_t)paddr;
- return paddr;
-}
-EXPORT_SYMBOL(dma_alloc_noncoherent);
-
-void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
-{
- free_pages_exact((void *)dma_handle, size);
-}
-EXPORT_SYMBOL(dma_free_noncoherent);
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp)
-{
- void *paddr, *kvaddr;
-
/*
* IOC relies on all data (even coherent DMA data) being in cache
* Thus allocate normal cached memory
@@ -65,22 +45,15 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
* -For coherent data, Read/Write to buffers terminate early in cache
* (vs. always going to memory - thus are faster)
*/
- if (is_isa_arcv2() && ioc_exists)
- return dma_alloc_noncoherent(dev, size, dma_handle, gfp);
-
- /* This is linear addr (0x8000_0000 based) */
- paddr = alloc_pages_exact(size, gfp);
- if (!paddr)
- return NULL;
+ if ((is_isa_arcv2() && ioc_exists) ||
+ dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs))
+ return paddr;
/* This is kernel Virtual address (0x7000_0000 based) */
kvaddr = ioremap_nocache((unsigned long)paddr, size);
if (kvaddr == NULL)
return NULL;
- /* This is bus address, platform dependent */
- *dma_handle = (dma_addr_t)paddr;
-
/*
* Evict any existing L1 and/or L2 lines for the backing page
* in case it was used earlier as a normal "cached" page.
@@ -95,26 +68,111 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
return kvaddr;
}
-EXPORT_SYMBOL(dma_alloc_coherent);
-void dma_free_coherent(struct device *dev, size_t size, void *kvaddr,
- dma_addr_t dma_handle)
+static void arc_dma_free(struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_handle, struct dma_attrs *attrs)
{
- if (is_isa_arcv2() && ioc_exists)
- return dma_free_noncoherent(dev, size, kvaddr, dma_handle);
-
- iounmap((void __force __iomem *)kvaddr);
+ if (!dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs) &&
+ !(is_isa_arcv2() && ioc_exists))
+ iounmap((void __force __iomem *)vaddr);
free_pages_exact((void *)dma_handle, size);
}
-EXPORT_SYMBOL(dma_free_coherent);
/*
- * Helper for streaming DMA...
+ * streaming DMA Mapping API...
+ * CPU accesses page via normal paddr, thus needs to explicitly made
+ * consistent before each use
*/
-void __arc_dma_cache_sync(unsigned long paddr, size_t size,
- enum dma_data_direction dir)
+static void _dma_cache_sync(unsigned long paddr, size_t size,
+ enum dma_data_direction dir)
+{
+ switch (dir) {
+ case DMA_FROM_DEVICE:
+ dma_cache_inv(paddr, size);
+ break;
+ case DMA_TO_DEVICE:
+ dma_cache_wback(paddr, size);
+ break;
+ case DMA_BIDIRECTIONAL:
+ dma_cache_wback_inv(paddr, size);
+ break;
+ default:
+ pr_err("Invalid DMA dir [%d] for OP @ %lx\n", dir, paddr);
+ }
+}
+
+static dma_addr_t arc_dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ unsigned long paddr = page_to_phys(page) + offset;
+ _dma_cache_sync(paddr, size, dir);
+ return (dma_addr_t)paddr;
+}
+
+static int arc_dma_map_sg(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
+{
+ struct scatterlist *s;
+ int i;
+
+ for_each_sg(sg, s, nents, i)
+ s->dma_address = dma_map_page(dev, sg_page(s), s->offset,
+ s->length, dir);
+
+ return nents;
+}
+
+static void arc_dma_sync_single_for_cpu(struct device *dev,
+ dma_addr_t dma_handle, size_t size, enum dma_data_direction dir)
+{
+ _dma_cache_sync(dma_handle, size, DMA_FROM_DEVICE);
+}
+
+static void arc_dma_sync_single_for_device(struct device *dev,
+ dma_addr_t dma_handle, size_t size, enum dma_data_direction dir)
{
- __inline_dma_cache_sync(paddr, size, dir);
+ _dma_cache_sync(dma_handle, size, DMA_TO_DEVICE);
}
-EXPORT_SYMBOL(__arc_dma_cache_sync);
+
+static void arc_dma_sync_sg_for_cpu(struct device *dev,
+ struct scatterlist *sglist, int nelems,
+ enum dma_data_direction dir)
+{
+ int i;
+ struct scatterlist *sg;
+
+ for_each_sg(sglist, sg, nelems, i)
+ _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir);
+}
+
+static void arc_dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sglist, int nelems,
+ enum dma_data_direction dir)
+{
+ int i;
+ struct scatterlist *sg;
+
+ for_each_sg(sglist, sg, nelems, i)
+ _dma_cache_sync((unsigned int)sg_virt(sg), sg->length, dir);
+}
+
+static int arc_dma_supported(struct device *dev, u64 dma_mask)
+{
+ /* Support 32 bit DMA mask exclusively */
+ return dma_mask == DMA_BIT_MASK(32);
+}
+
+struct dma_map_ops arc_dma_ops = {
+ .alloc = arc_dma_alloc,
+ .free = arc_dma_free,
+ .map_page = arc_dma_map_page,
+ .map_sg = arc_dma_map_sg,
+ .sync_single_for_device = arc_dma_sync_single_for_device,
+ .sync_single_for_cpu = arc_dma_sync_single_for_cpu,
+ .sync_sg_for_cpu = arc_dma_sync_sg_for_cpu,
+ .sync_sg_for_device = arc_dma_sync_sg_for_device,
+ .dma_supported = arc_dma_supported,
+};
+EXPORT_SYMBOL(arc_dma_ops);