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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-15 14:15:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-15 14:15:17 -0800
commitd25b6af91ec600faaff3a7e863f19d3e16593e52 (patch)
tree30aaf6a1fa9b767779afd478189d5be58a0a2f4c
parent179a7ba6806805bd4cd7a5e4574b83353c5615ad (diff)
parent7badf6fefca8278e749e82411fdb98b123cca50e (diff)
Merge tag 'arc-4.10-rc1-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta: "These are mostly timer/clocksource driver updates which were Reviewed/Acked by Daniel but had to be merged via ARC tree due to dependencies. I will follow up with another pull request with actual ARC changes early next week ! Summary: - Moving ARC timer driver into drivers/clocksource - EZChip timer driver updates [Noam] - ARC AXS103 and HAPS platform updates [Alexey]" * tag 'arc-4.10-rc1-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: axs10x: really enable ARC PGU ARC: rename Zebu platform support to HAPS clocksource: nps: avoid maybe-uninitialized warning clocksource: Add clockevent support to NPS400 driver clocksource: update "fn" at CLOCKSOURCE_OF_DECLARE() of nps400 timer soc: Support for NPS HW scheduling clocksource: import ARC timer driver ARC: breakout timer include code into separate header ... ARC: move mcip.h into include/soc and adjust the includes ARC: breakout aux handling into a separate header ARC: time: move time_init() out of the driver ARC: timer: gfrc, rtc: build under same option (64-bit timers) ARC: timer: gfrc, rtc: Read BCR to detect whether hardware exists ... ARC: timer: gfrc, rtc: deuglify big endian code
-rw-r--r--Documentation/devicetree/bindings/timer/ezchip,nps400-timer0.txt17
-rw-r--r--Documentation/devicetree/bindings/timer/ezchip,nps400-timer1.txt (renamed from Documentation/devicetree/bindings/timer/ezchip,nps400-timer.txt)6
-rw-r--r--MAINTAINERS1
-rw-r--r--arch/arc/Kconfig13
-rw-r--r--arch/arc/boot/dts/axs101.dts2
-rw-r--r--arch/arc/boot/dts/axs103_idu.dts2
-rw-r--r--arch/arc/boot/dts/haps_hs.dts (renamed from arch/arc/boot/dts/zebu_hs.dts)0
-rw-r--r--arch/arc/boot/dts/haps_hs_idu.dts (renamed from arch/arc/boot/dts/zebu_hs_idu.dts)0
-rw-r--r--arch/arc/configs/axs101_defconfig4
-rw-r--r--arch/arc/configs/axs103_smp_defconfig4
-rw-r--r--arch/arc/configs/haps_hs_defconfig (renamed from arch/arc/configs/zebu_hs_defconfig)2
-rw-r--r--arch/arc/configs/haps_hs_smp_defconfig (renamed from arch/arc/configs/zebu_hs_smp_defconfig)2
-rw-r--r--arch/arc/configs/nsimosci_hs_smp_defconfig2
-rw-r--r--arch/arc/configs/vdk_hs38_smp_defconfig2
-rw-r--r--arch/arc/include/asm/arcregs.h94
-rw-r--r--arch/arc/kernel/Makefile2
-rw-r--r--arch/arc/kernel/mcip.c2
-rw-r--r--arch/arc/kernel/setup.c17
-rw-r--r--arch/arc/plat-axs10x/axs10x.c2
-rw-r--r--arch/arc/plat-eznps/include/plat/ctop.h2
-rw-r--r--drivers/clocksource/Kconfig20
-rw-r--r--drivers/clocksource/Makefile1
-rw-r--r--drivers/clocksource/arc_timer.c (renamed from arch/arc/kernel/time.c)110
-rw-r--r--drivers/clocksource/timer-nps.c224
-rw-r--r--include/soc/arc/aux.h63
-rw-r--r--include/soc/arc/mcip.h (renamed from arch/arc/include/asm/mcip.h)10
-rw-r--r--include/soc/arc/timers.h38
-rw-r--r--include/soc/nps/mtm.h59
28 files changed, 474 insertions, 227 deletions
diff --git a/Documentation/devicetree/bindings/timer/ezchip,nps400-timer0.txt b/Documentation/devicetree/bindings/timer/ezchip,nps400-timer0.txt
new file mode 100644
index 000000000000..e3cfce8fecc5
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/ezchip,nps400-timer0.txt
@@ -0,0 +1,17 @@
+NPS Network Processor
+
+Required properties:
+
+- compatible : should be "ezchip,nps400-timer0"
+
+Clocks required for compatible = "ezchip,nps400-timer0":
+- interrupts : The interrupt of the first timer
+- clocks : Must contain a single entry describing the clock input
+
+Example:
+
+timer {
+ compatible = "ezchip,nps400-timer0";
+ interrupts = <3>;
+ clocks = <&sysclk>;
+};
diff --git a/Documentation/devicetree/bindings/timer/ezchip,nps400-timer.txt b/Documentation/devicetree/bindings/timer/ezchip,nps400-timer1.txt
index c8c03d700382..c0ab4190b8fb 100644
--- a/Documentation/devicetree/bindings/timer/ezchip,nps400-timer.txt
+++ b/Documentation/devicetree/bindings/timer/ezchip,nps400-timer1.txt
@@ -2,14 +2,14 @@ NPS Network Processor
Required properties:
-- compatible : should be "ezchip,nps400-timer"
+- compatible : should be "ezchip,nps400-timer1"
-Clocks required for compatible = "ezchip,nps400-timer":
+Clocks required for compatible = "ezchip,nps400-timer1":
- clocks : Must contain a single entry describing the clock input
Example:
timer {
- compatible = "ezchip,nps400-timer";
+ compatible = "ezchip,nps400-timer1";
clocks = <&sysclk>;
};
diff --git a/MAINTAINERS b/MAINTAINERS
index 9d73040b846d..d0d734683bf0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11827,6 +11827,7 @@ S: Supported
F: arch/arc/
F: Documentation/devicetree/bindings/arc/*
F: Documentation/devicetree/bindings/interrupt-controller/snps,arc*
+F: drivers/clocksource/arc_timer.c
F: drivers/tty/serial/arc_uart.c
T: git git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index bd204bfa29ed..ab12723d39a0 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -8,9 +8,9 @@
config ARC
def_bool y
+ select ARC_TIMERS
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
select BUILDTIME_EXTABLE_SORT
- select CLKSRC_OF
select CLONE_BACKWARDS
select COMMON_CLK
select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC)
@@ -115,6 +115,7 @@ config ISA_ARCOMPACT
config ISA_ARCV2
bool "ARC ISA v2"
+ select ARC_TIMERS_64BIT
help
ISA for the Next Generation ARC-HS cores
@@ -410,16 +411,6 @@ config ARC_HAS_DIV_REM
bool "Insn: div, divu, rem, remu"
default y
-config ARC_HAS_RTC
- bool "Local 64-bit r/o cycle counter"
- default n
- depends on !SMP
-
-config ARC_HAS_GFRC
- bool "SMP synchronized 64-bit cycle counter"
- default y
- depends on SMP
-
config ARC_NUMBER_OF_INTERRUPTS
int "Number of interrupts"
range 8 240
diff --git a/arch/arc/boot/dts/axs101.dts b/arch/arc/boot/dts/axs101.dts
index d9b9b9dcfc4c..70aec7d6ca60 100644
--- a/arch/arc/boot/dts/axs101.dts
+++ b/arch/arc/boot/dts/axs101.dts
@@ -17,6 +17,6 @@
compatible = "snps,axs101", "snps,arc-sdp";
chosen {
- bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 consoleblank=0";
+ bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 consoleblank=0 video=1280x720@60";
};
};
diff --git a/arch/arc/boot/dts/axs103_idu.dts b/arch/arc/boot/dts/axs103_idu.dts
index 070c29782216..5c843d9b4ac8 100644
--- a/arch/arc/boot/dts/axs103_idu.dts
+++ b/arch/arc/boot/dts/axs103_idu.dts
@@ -20,6 +20,6 @@
compatible = "snps,axs103", "snps,arc-sdp";
chosen {
- bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=ttyS3,115200n8 debug print-fatal-signals=1";
+ bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 print-fatal-signals=1 consoleblank=0 video=1280x720@60";
};
};
diff --git a/arch/arc/boot/dts/zebu_hs.dts b/arch/arc/boot/dts/haps_hs.dts
index 1c1324e84965..1c1324e84965 100644
--- a/arch/arc/boot/dts/zebu_hs.dts
+++ b/arch/arc/boot/dts/haps_hs.dts
diff --git a/arch/arc/boot/dts/zebu_hs_idu.dts b/arch/arc/boot/dts/haps_hs_idu.dts
index 65204b4c0f13..65204b4c0f13 100644
--- a/arch/arc/boot/dts/zebu_hs_idu.dts
+++ b/arch/arc/boot/dts/haps_hs_idu.dts
diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig
index 0a0eaf09aac7..6980b966a364 100644
--- a/arch/arc/configs/axs101_defconfig
+++ b/arch/arc/configs/axs101_defconfig
@@ -75,9 +75,11 @@ CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# CONFIG_HWMON is not set
+CONFIG_DRM=m
+CONFIG_DRM_I2C_ADV7511=m
+CONFIG_DRM_ARCPGU=m
CONFIG_FB=y
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
diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig
index 110874705085..30a3d4cf53d2 100644
--- a/arch/arc/configs/axs103_smp_defconfig
+++ b/arch/arc/configs/axs103_smp_defconfig
@@ -77,9 +77,11 @@ CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# CONFIG_HWMON is not set
+CONFIG_DRM=m
+CONFIG_DRM_I2C_ADV7511=m
+CONFIG_DRM_ARCPGU=m
CONFIG_FB=y
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
diff --git a/arch/arc/configs/zebu_hs_defconfig b/arch/arc/configs/haps_hs_defconfig
index 9f6166be7145..57b3e599322f 100644
--- a/arch/arc/configs/zebu_hs_defconfig
+++ b/arch/arc/configs/haps_hs_defconfig
@@ -23,7 +23,7 @@ CONFIG_MODULES=y
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
-CONFIG_ARC_BUILTIN_DTB_NAME="zebu_hs"
+CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
CONFIG_NET=y
diff --git a/arch/arc/configs/zebu_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig
index 44e9693f4257..f85985adebb2 100644
--- a/arch/arc/configs/zebu_hs_smp_defconfig
+++ b/arch/arc/configs/haps_hs_smp_defconfig
@@ -26,7 +26,7 @@ CONFIG_MODULES=y
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
-CONFIG_ARC_BUILTIN_DTB_NAME="zebu_hs_idu"
+CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs_idu"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
CONFIG_NET=y
diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig
index 6da71ba253a9..155add7761ed 100644
--- a/arch/arc/configs/nsimosci_hs_smp_defconfig
+++ b/arch/arc/configs/nsimosci_hs_smp_defconfig
@@ -21,7 +21,7 @@ CONFIG_MODULES=y
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
-# CONFIG_ARC_HAS_GFRC is not set
+# CONFIG_ARC_TIMERS_64BIT is not set
CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci_hs_idu"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set
diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig
index 969b206d6c67..573028f19de7 100644
--- a/arch/arc/configs/vdk_hs38_smp_defconfig
+++ b/arch/arc/configs/vdk_hs38_smp_defconfig
@@ -15,7 +15,7 @@ CONFIG_ARC_PLAT_AXS10X=y
CONFIG_AXS103=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
-# CONFIG_ARC_HAS_GFRC is not set
+# CONFIG_ARC_TIMERS_64BIT 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 1bd24ec3e350..da41a54ea2d7 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -20,7 +20,6 @@
#define ARC_REG_FP_V2_BCR 0xc8 /* ARCv2 FPU */
#define ARC_REG_SLC_BCR 0xce
#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_BUILD 0x78 /* ICCM size (common) */
#define ARC_REG_XY_MEM_BCR 0x79
@@ -112,90 +111,7 @@
#ifndef __ASSEMBLY__
-/*
- ******************************************************************
- * Inline ASM macros to read/write AUX Regs
- * Essentially invocation of lr/sr insns from "C"
- */
-
-#if 1
-
-#define read_aux_reg(reg) __builtin_arc_lr(reg)
-
-/* gcc builtin sr needs reg param to be long immediate */
-#define write_aux_reg(reg_immed, val) \
- __builtin_arc_sr((unsigned int)(val), reg_immed)
-
-#else
-
-#define read_aux_reg(reg) \
-({ \
- unsigned int __ret; \
- __asm__ __volatile__( \
- " lr %0, [%1]" \
- : "=r"(__ret) \
- : "i"(reg)); \
- __ret; \
-})
-
-/*
- * Aux Reg address is specified as long immediate by caller
- * e.g.
- * write_aux_reg(0x69, some_val);
- * This generates tightest code.
- */
-#define write_aux_reg(reg_imm, val) \
-({ \
- __asm__ __volatile__( \
- " sr %0, [%1] \n" \
- : \
- : "ir"(val), "i"(reg_imm)); \
-})
-
-/*
- * Aux Reg address is specified in a variable
- * * e.g.
- * reg_num = 0x69
- * write_aux_reg2(reg_num, some_val);
- * This has to generate glue code to load the reg num from
- * memory to a reg hence not recommended.
- */
-#define write_aux_reg2(reg_in_var, val) \
-({ \
- unsigned int tmp; \
- \
- __asm__ __volatile__( \
- " ld %0, [%2] \n\t" \
- " sr %1, [%0] \n\t" \
- : "=&r"(tmp) \
- : "r"(val), "memory"(&reg_in_var)); \
-})
-
-#endif
-
-#define READ_BCR(reg, into) \
-{ \
- unsigned int tmp; \
- tmp = read_aux_reg(reg); \
- if (sizeof(tmp) == sizeof(into)) { \
- into = *((typeof(into) *)&tmp); \
- } else { \
- extern void bogus_undefined(void); \
- bogus_undefined(); \
- } \
-}
-
-#define WRITE_AUX(reg, into) \
-{ \
- unsigned int tmp; \
- if (sizeof(tmp) == sizeof(into)) { \
- tmp = (*(unsigned int *)&(into)); \
- write_aux_reg(reg, tmp); \
- } else { \
- extern void bogus_undefined(void); \
- bogus_undefined(); \
- } \
-}
+#include <soc/arc/aux.h>
/* Helpers */
#define TO_KB(bytes) ((bytes) >> 10)
@@ -291,13 +207,7 @@ struct bcr_fp_arcv2 {
#endif
};
-struct bcr_timer {
-#ifdef CONFIG_CPU_BIG_ENDIAN
- unsigned int pad2:15, rtsc:1, pad1:5, rtc:1, t1:1, t0:1, ver:8;
-#else
- unsigned int ver:8, t0:1, t1:1, rtc:1, pad1:5, rtsc:1, pad2:15;
-#endif
-};
+#include <soc/arc/timers.h>
struct bcr_bpu_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
diff --git a/arch/arc/kernel/Makefile b/arch/arc/kernel/Makefile
index cfcdedf52ff8..8942c5c3b4c5 100644
--- a/arch/arc/kernel/Makefile
+++ b/arch/arc/kernel/Makefile
@@ -8,7 +8,7 @@
# Pass UTS_MACHINE for user_regset definition
CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
-obj-y := arcksyms.o setup.o irq.o time.o reset.o ptrace.o process.o devtree.o
+obj-y := arcksyms.o setup.o irq.o reset.o ptrace.o process.o devtree.o
obj-y += signal.o traps.o sys.o troubleshoot.o stacktrace.o disasm.o
obj-$(CONFIG_ISA_ARCOMPACT) += entry-compact.o intc-compact.o
obj-$(CONFIG_ISA_ARCV2) += entry-arcv2.o intc-arcv2.o
diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c
index f39142acc89e..560c4afc2af4 100644
--- a/arch/arc/kernel/mcip.c
+++ b/arch/arc/kernel/mcip.c
@@ -11,8 +11,8 @@
#include <linux/smp.h>
#include <linux/irq.h>
#include <linux/spinlock.h>
+#include <soc/arc/mcip.h>
#include <asm/irqflags-arcv2.h>
-#include <asm/mcip.h>
#include <asm/setup.h>
static DEFINE_RAW_SPINLOCK(mcip_lock);
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 0385df77a697..3093fa898a23 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -10,6 +10,8 @@
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/root_dev.h>
+#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
#include <linux/console.h>
#include <linux/module.h>
#include <linux/cpu.h>
@@ -234,11 +236,11 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
is_isa_arcompact() ? "ARCompact" : "ARCv2",
IS_AVAIL1(cpu->isa.be, "[Big-Endian]"));
- n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
+ n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s%s%s\nISA Extn\t: ",
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));
+ 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",
IS_AVAIL2(cpu->isa.atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
@@ -449,6 +451,15 @@ void __init setup_arch(char **cmdline_p)
arc_unwind_init();
}
+/*
+ * Called from start_kernel() - boot CPU only
+ */
+void __init time_init(void)
+{
+ of_clk_init(NULL);
+ clocksource_probe();
+}
+
static int __init customize_machine(void)
{
if (machine_desc->init_machine)
diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c
index 86548701023c..38ff349d7f2a 100644
--- a/arch/arc/plat-axs10x/axs10x.c
+++ b/arch/arc/plat-axs10x/axs10x.c
@@ -21,7 +21,7 @@
#include <asm/asm-offsets.h>
#include <asm/io.h>
#include <asm/mach_desc.h>
-#include <asm/mcip.h>
+#include <soc/arc/mcip.h>
#define AXS_MB_CGU 0xE0010000
#define AXS_MB_CREG 0xE0011000
diff --git a/arch/arc/plat-eznps/include/plat/ctop.h b/arch/arc/plat-eznps/include/plat/ctop.h
index 9d6718c1a199..ee2e32df5e90 100644
--- a/arch/arc/plat-eznps/include/plat/ctop.h
+++ b/arch/arc/plat-eznps/include/plat/ctop.h
@@ -46,9 +46,7 @@
#define CTOP_AUX_UDMC (CTOP_AUX_BASE + 0x300)
/* EZchip core instructions */
-#define CTOP_INST_HWSCHD_OFF_R3 0x3B6F00BF
#define CTOP_INST_HWSCHD_OFF_R4 0x3C6F00BF
-#define CTOP_INST_HWSCHD_RESTORE_R3 0x3E6F70C3
#define CTOP_INST_HWSCHD_RESTORE_R4 0x3E6F7103
#define CTOP_INST_SCHD_RW 0x3E6F7004
#define CTOP_INST_SCHD_RD 0x3E6F7084
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index e2c6e43cf8ca..4866f7aa32e6 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -282,6 +282,26 @@ config CLKSRC_MPS2
select CLKSRC_MMIO
select CLKSRC_OF
+config ARC_TIMERS
+ bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
+ depends on GENERIC_CLOCKEVENTS
+ select CLKSRC_OF
+ help
+ These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
+ (ARC700 as well as ARC HS38).
+ TIMER0 serves as clockevent while TIMER1 provides clocksource
+
+config ARC_TIMERS_64BIT
+ bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
+ depends on GENERIC_CLOCKEVENTS
+ depends on ARC_TIMERS
+ select CLKSRC_OF
+ help
+ This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
+ RTC is implemented inside the core, while GFRC sits outside the core in
+ ARConnect IP block. Driver automatically picks one of them for clocksource
+ as appropriate.
+
config ARM_ARCH_TIMER
bool
select CLKSRC_OF if OF
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index cf87f407f1ad..a14111e1f087 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -51,6 +51,7 @@ obj-$(CONFIG_CLKSRC_TI_32K) += timer-ti-32k.o
obj-$(CONFIG_CLKSRC_NPS) += timer-nps.o
obj-$(CONFIG_OXNAS_RPS_TIMER) += timer-oxnas-rps.o
+obj-$(CONFIG_ARC_TIMERS) += arc_timer.o
obj-$(CONFIG_ARM_ARCH_TIMER) += arm_arch_timer.o
obj-$(CONFIG_ARM_GLOBAL_TIMER) += arm_global_timer.o
obj-$(CONFIG_ARMV7M_SYSTICK) += armv7m_systick.o
diff --git a/arch/arc/kernel/time.c b/drivers/clocksource/arc_timer.c
index c10390d1ddb6..a49748d826c0 100644
--- a/arch/arc/kernel/time.c
+++ b/drivers/clocksource/arc_timer.c
@@ -1,32 +1,18 @@
/*
+ * Copyright (C) 2016-17 Synopsys, Inc. (www.synopsys.com)
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*
* 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.
- *
- * vineetg: Jan 1011
- * -sched_clock( ) no longer jiffies based. Uses the same clocksource
- * as gtod
- *
- * Rajeshwarr/Vineetg: Mar 2008
- * -Implemented CONFIG_GENERIC_TIME (rather deleted arch specific code)
- * for arch independent gettimeofday()
- * -Implemented CONFIG_GENERIC_CLOCKEVENTS as base for hrtimers
- *
- * Vineetg: Mar 2008: Forked off from time.c which now is time-jiff.c
*/
-/* ARC700 has two 32bit independent prog Timers: TIMER0 and TIMER1
- * Each can programmed to go from @count to @limit and optionally
- * interrupt when that happens.
- * A write to Control Register clears the Interrupt
+/* ARC700 has two 32bit independent prog Timers: TIMER0 and TIMER1, Each can be
+ * programmed to go from @count to @limit and optionally interrupt.
+ * We've designated TIMER0 for clockevents and TIMER1 for clocksource
*
- * We've designated TIMER0 for events (clockevents)
- * while TIMER1 for free running (clocksource)
- *
- * Newer ARC700 cores have 64bit clk fetching RTSC insn, preferred over TIMER1
- * which however is currently broken
+ * ARCv2 based HS38 cores have RTC (in-core) and GFRC (inside ARConnect/MCIP)
+ * which are suitable for UP and SMP based clocksources respectively
*/
#include <linux/interrupt.h>
@@ -37,23 +23,10 @@
#include <linux/cpu.h>
#include <linux/of.h>
#include <linux/of_irq.h>
-#include <asm/irq.h>
-#include <asm/arcregs.h>
-
-#include <asm/mcip.h>
-/* Timer related Aux registers */
-#define ARC_REG_TIMER0_LIMIT 0x23 /* timer 0 limit */
-#define ARC_REG_TIMER0_CTRL 0x22 /* timer 0 control */
-#define ARC_REG_TIMER0_CNT 0x21 /* timer 0 count */
-#define ARC_REG_TIMER1_LIMIT 0x102 /* timer 1 limit */
-#define ARC_REG_TIMER1_CTRL 0x101 /* timer 1 control */
-#define ARC_REG_TIMER1_CNT 0x100 /* timer 1 count */
+#include <soc/arc/timers.h>
+#include <soc/arc/mcip.h>
-#define TIMER_CTRL_IE (1 << 0) /* Interrupt when Count reaches limit */
-#define TIMER_CTRL_NH (1 << 1) /* Count only when CPU NOT halted */
-
-#define ARC_TIMER_MAX 0xFFFFFFFF
static unsigned long arc_timer_freq;
@@ -81,31 +54,24 @@ static int noinline arc_get_timer_clk(struct device_node *node)
/********** Clock Source Device *********/
-#ifdef CONFIG_ARC_HAS_GFRC
+#ifdef CONFIG_ARC_TIMERS_64BIT
static cycle_t arc_read_gfrc(struct clocksource *cs)
{
unsigned long flags;
- union {
-#ifdef CONFIG_CPU_BIG_ENDIAN
- struct { u32 h, l; };
-#else
- struct { u32 l, h; };
-#endif
- cycle_t full;
- } stamp;
+ u32 l, h;
local_irq_save(flags);
__mcip_cmd(CMD_GFRC_READ_LO, 0);
- stamp.l = read_aux_reg(ARC_REG_MCIP_READBACK);
+ l = read_aux_reg(ARC_REG_MCIP_READBACK);
__mcip_cmd(CMD_GFRC_READ_HI, 0);
- stamp.h = read_aux_reg(ARC_REG_MCIP_READBACK);
+ h = read_aux_reg(ARC_REG_MCIP_READBACK);
local_irq_restore(flags);
- return stamp.full;
+ return (((cycle_t)h) << 32) | l;
}
static struct clocksource arc_counter_gfrc = {
@@ -118,11 +84,14 @@ static struct clocksource arc_counter_gfrc = {
static int __init arc_cs_setup_gfrc(struct device_node *node)
{
- int exists = cpuinfo_arc700[0].extn.gfrc;
+ struct mcip_bcr mp;
int ret;
- if (WARN(!exists, "Global-64-bit-Ctr clocksource not detected"))
+ READ_BCR(ARC_REG_MCIP_BCR, mp);
+ if (!mp.gfrc) {
+ pr_warn("Global-64-bit-Ctr clocksource not detected");
return -ENXIO;
+ }
ret = arc_get_timer_clk(node);
if (ret)
@@ -132,10 +101,6 @@ static int __init arc_cs_setup_gfrc(struct device_node *node)
}
CLOCKSOURCE_OF_DECLARE(arc_gfrc, "snps,archs-timer-gfrc", arc_cs_setup_gfrc);
-#endif
-
-#ifdef CONFIG_ARC_HAS_RTC
-
#define AUX_RTC_CTRL 0x103
#define AUX_RTC_LOW 0x104
#define AUX_RTC_HIGH 0x105
@@ -143,14 +108,7 @@ CLOCKSOURCE_OF_DECLARE(arc_gfrc, "snps,archs-timer-gfrc", arc_cs_setup_gfrc);
static cycle_t arc_read_rtc(struct clocksource *cs)
{
unsigned long status;
- union {
-#ifdef CONFIG_CPU_BIG_ENDIAN
- struct { u32 high, low; };
-#else
- struct { u32 low, high; };
-#endif
- cycle_t full;
- } stamp;
+ u32 l, h;
/*
* hardware has an internal state machine which tracks readout of
@@ -159,12 +117,12 @@ static cycle_t arc_read_rtc(struct clocksource *cs)
* - high increments after low has been read
*/
do {
- stamp.low = read_aux_reg(AUX_RTC_LOW);
- stamp.high = read_aux_reg(AUX_RTC_HIGH);
+ l = read_aux_reg(AUX_RTC_LOW);
+ h = read_aux_reg(AUX_RTC_HIGH);
status = read_aux_reg(AUX_RTC_CTRL);
} while (!(status & _BITUL(31)));
- return stamp.full;
+ return (((cycle_t)h) << 32) | l;
}
static struct clocksource arc_counter_rtc = {
@@ -177,15 +135,20 @@ static struct clocksource arc_counter_rtc = {
static int __init arc_cs_setup_rtc(struct device_node *node)
{
- int exists = cpuinfo_arc700[smp_processor_id()].extn.rtc;
+ struct bcr_timer timer;
int ret;
- if (WARN(!exists, "Local-64-bit-Ctr clocksource not detected"))
+ READ_BCR(ARC_REG_TIMERS_BCR, timer);
+ if (!timer.rtc) {
+ pr_warn("Local-64-bit-Ctr clocksource not detected");
return -ENXIO;
+ }
/* Local to CPU hence not usable in SMP */
- if (WARN(IS_ENABLED(CONFIG_SMP), "Local-64-bit-Ctr not usable in SMP"))
+ if (IS_ENABLED(CONFIG_SMP)) {
+ pr_warn("Local-64-bit-Ctr not usable in SMP");
return -EINVAL;
+ }
ret = arc_get_timer_clk(node);
if (ret)
@@ -228,7 +191,7 @@ static int __init arc_cs_setup_timer1(struct device_node *node)
if (ret)
return ret;
- write_aux_reg(ARC_REG_TIMER1_LIMIT, ARC_TIMER_MAX);
+ write_aux_reg(ARC_REG_TIMER1_LIMIT, ARC_TIMERN_MAX);
write_aux_reg(ARC_REG_TIMER1_CNT, 0);
write_aux_reg(ARC_REG_TIMER1_CTRL, TIMER_CTRL_NH);
@@ -306,7 +269,7 @@ static int arc_timer_starting_cpu(unsigned int cpu)
evt->cpumask = cpumask_of(smp_processor_id());
- clockevents_config_and_register(evt, arc_timer_freq, 0, ARC_TIMER_MAX);
+ clockevents_config_and_register(evt, arc_timer_freq, 0, ARC_TIMERN_MAX);
enable_percpu_irq(arc_timer_irq, 0);
return 0;
}
@@ -371,12 +334,3 @@ static int __init arc_of_timer_init(struct device_node *np)
return ret;
}
CLOCKSOURCE_OF_DECLARE(arc_clkevt, "snps,arc-timer", arc_of_timer_init);
-
-/*
- * Called from start_kernel() - boot CPU only
- */
-void __init time_init(void)
-{
- of_clk_init(NULL);
- clocksource_probe();
-}
diff --git a/drivers/clocksource/timer-nps.c b/drivers/clocksource/timer-nps.c
index 70c149af8ee0..8da5e93b6810 100644
--- a/drivers/clocksource/timer-nps.c
+++ b/drivers/clocksource/timer-nps.c
@@ -46,7 +46,36 @@
/* This array is per cluster of CPUs (Each NPS400 cluster got 256 CPUs) */
static void *nps_msu_reg_low_addr[NPS_CLUSTER_NUM] __read_mostly;
-static unsigned long nps_timer_rate;
+static int __init nps_get_timer_clk(struct device_node *node,
+ unsigned long *timer_freq,
+ struct clk **clk)
+{
+ int ret;
+
+ *clk = of_clk_get(node, 0);
+ ret = PTR_ERR_OR_ZERO(*clk);
+ if (ret) {
+ pr_err("timer missing clk");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(*clk);
+ if (ret) {
+ pr_err("Couldn't enable parent clk\n");
+ clk_put(*clk);
+ return ret;
+ }
+
+ *timer_freq = clk_get_rate(*clk);
+ if (!(*timer_freq)) {
+ pr_err("Couldn't get clk rate\n");
+ clk_disable_unprepare(*clk);
+ clk_put(*clk);
+ return -EINVAL;
+ }
+
+ return 0;
+}
static cycle_t nps_clksrc_read(struct clocksource *clksrc)
{
@@ -55,26 +84,24 @@ static cycle_t nps_clksrc_read(struct clocksource *clksrc)
return (cycle_t)ioread32be(nps_msu_reg_low_addr[cluster]);
}
-static int __init nps_setup_clocksource(struct device_node *node,
- struct clk *clk)
+static int __init nps_setup_clocksource(struct device_node *node)
{
int ret, cluster;
+ struct clk *clk;
+ unsigned long nps_timer1_freq;
+
for (cluster = 0; cluster < NPS_CLUSTER_NUM; cluster++)
nps_msu_reg_low_addr[cluster] =
nps_host_reg((cluster << NPS_CLUSTER_OFFSET),
- NPS_MSU_BLKID, NPS_MSU_TICK_LOW);
+ NPS_MSU_BLKID, NPS_MSU_TICK_LOW);
- ret = clk_prepare_enable(clk);
- if (ret) {
- pr_err("Couldn't enable parent clock\n");
+ ret = nps_get_timer_clk(node, &nps_timer1_freq, &clk);
+ if (ret)
return ret;
- }
-
- nps_timer_rate = clk_get_rate(clk);
- ret = clocksource_mmio_init(nps_msu_reg_low_addr, "EZnps-tick",
- nps_timer_rate, 301, 32, nps_clksrc_read);
+ ret = clocksource_mmio_init(nps_msu_reg_low_addr, "nps-tick",
+ nps_timer1_freq, 300, 32, nps_clksrc_read);
if (ret) {
pr_err("Couldn't register clock source.\n");
clk_disable_unprepare(clk);
@@ -83,18 +110,175 @@ static int __init nps_setup_clocksource(struct device_node *node,
return ret;
}
-static int __init nps_timer_init(struct device_node *node)
+CLOCKSOURCE_OF_DECLARE(ezchip_nps400_clksrc, "ezchip,nps400-timer",
+ nps_setup_clocksource);
+CLOCKSOURCE_OF_DECLARE(ezchip_nps400_clk_src, "ezchip,nps400-timer1",
+ nps_setup_clocksource);
+
+#ifdef CONFIG_EZNPS_MTM_EXT
+#include <soc/nps/mtm.h>
+
+/* Timer related Aux registers */
+#define NPS_REG_TIMER0_TSI 0xFFFFF850
+#define NPS_REG_TIMER0_LIMIT 0x23
+#define NPS_REG_TIMER0_CTRL 0x22
+#define NPS_REG_TIMER0_CNT 0x21
+
+/*
+ * Interrupt Enabled (IE) - re-arm the timer
+ * Not Halted (NH) - is cleared when working with JTAG (for debug)
+ */
+#define TIMER0_CTRL_IE BIT(0)
+#define TIMER0_CTRL_NH BIT(1)
+
+static unsigned long nps_timer0_freq;
+static unsigned long nps_timer0_irq;
+
+static void nps_clkevent_rm_thread(void)
+{
+ int thread;
+ unsigned int cflags, enabled_threads;
+
+ hw_schd_save(&cflags);
+
+ enabled_threads = read_aux_reg(NPS_REG_TIMER0_TSI);
+
+ /* remove thread from TSI1 */
+ thread = read_aux_reg(CTOP_AUX_THREAD_ID);
+ enabled_threads &= ~(1 << thread);
+ write_aux_reg(NPS_REG_TIMER0_TSI, enabled_threads);
+
+ /* Acknowledge and if needed re-arm the timer */
+ if (!enabled_threads)
+ write_aux_reg(NPS_REG_TIMER0_CTRL, TIMER0_CTRL_NH);
+ else
+ write_aux_reg(NPS_REG_TIMER0_CTRL,
+ TIMER0_CTRL_IE | TIMER0_CTRL_NH);
+
+ hw_schd_restore(cflags);
+}
+
+static void nps_clkevent_add_thread(unsigned long delta)
+{
+ int thread;
+ unsigned int cflags, enabled_threads;
+
+ hw_schd_save(&cflags);
+
+ /* add thread to TSI1 */
+ thread = read_aux_reg(CTOP_AUX_THREAD_ID);
+ enabled_threads = read_aux_reg(NPS_REG_TIMER0_TSI);
+ enabled_threads |= (1 << thread);
+ write_aux_reg(NPS_REG_TIMER0_TSI, enabled_threads);
+
+ /* set next timer event */
+ write_aux_reg(NPS_REG_TIMER0_LIMIT, delta);
+ write_aux_reg(NPS_REG_TIMER0_CNT, 0);
+ write_aux_reg(NPS_REG_TIMER0_CTRL,
+ TIMER0_CTRL_IE | TIMER0_CTRL_NH);
+
+ hw_schd_restore(cflags);
+}
+
+/*
+ * Whenever anyone tries to change modes, we just mask interrupts
+ * and wait for the next event to get set.
+ */
+static int nps_clkevent_set_state(struct clock_event_device *dev)
+{
+ nps_clkevent_rm_thread();
+ disable_percpu_irq(nps_timer0_irq);
+
+ return 0;
+}
+
+static int nps_clkevent_set_next_event(unsigned long delta,
+ struct clock_event_device *dev)
+{
+ nps_clkevent_add_thread(delta);
+ enable_percpu_irq(nps_timer0_irq, IRQ_TYPE_NONE);
+
+ return 0;
+}
+
+static DEFINE_PER_CPU(struct clock_event_device, nps_clockevent_device) = {
+ .name = "NPS Timer0",
+ .features = CLOCK_EVT_FEAT_ONESHOT,
+ .rating = 300,
+ .set_next_event = nps_clkevent_set_next_event,
+ .set_state_oneshot = nps_clkevent_set_state,
+ .set_state_oneshot_stopped = nps_clkevent_set_state,
+ .set_state_shutdown = nps_clkevent_set_state,
+ .tick_resume = nps_clkevent_set_state,
+};
+
+static irqreturn_t timer_irq_handler(int irq, void *dev_id)
+{
+ struct clock_event_device *evt = dev_id;
+
+ nps_clkevent_rm_thread();
+ evt->event_handler(evt);
+
+ return IRQ_HANDLED;
+}
+
+static int nps_timer_starting_cpu(unsigned int cpu)
+{
+ struct clock_event_device *evt = this_cpu_ptr(&nps_clockevent_device);
+
+ evt->cpumask = cpumask_of(smp_processor_id());
+
+ clockevents_config_and_register(evt, nps_timer0_freq, 0, ULONG_MAX);
+ enable_percpu_irq(nps_timer0_irq, IRQ_TYPE_NONE);
+
+ return 0;
+}
+
+static int nps_timer_dying_cpu(unsigned int cpu)
+{
+ disable_percpu_irq(nps_timer0_irq);
+ return 0;
+}
+
+static int __init nps_setup_clockevent(struct device_node *node)
{
struct clk *clk;
+ int ret;
- clk = of_clk_get(node, 0);
- if (IS_ERR(clk)) {
- pr_err("Can't get timer clock.\n");
- return PTR_ERR(clk);
+ nps_timer0_irq = irq_of_parse_and_map(node, 0);
+ if (nps_timer0_irq <= 0) {
+ pr_err("clockevent: missing irq");
+ return -EINVAL;
}
- return nps_setup_clocksource(node, clk);
+ ret = nps_get_timer_clk(node, &nps_timer0_freq, &clk);
+ if (ret)
+ return ret;
+
+ /* Needs apriori irq_set_percpu_devid() done in intc map function */
+ ret = request_percpu_irq(nps_timer0_irq, timer_irq_handler,
+ "Timer0 (per-cpu-tick)",
+ &nps_clockevent_device);
+ if (ret) {
+ pr_err("Couldn't request irq\n");
+ clk_disable_unprepare(clk);
+ return ret;
+ }
+
+ ret = cpuhp_setup_state(CPUHP_AP_ARC_TIMER_STARTING,
+ "clockevents/nps:starting",
+ nps_timer_starting_cpu,
+ nps_timer_dying_cpu);
+ if (ret) {
+ pr_err("Failed to setup hotplug state");
+ clk_disable_unprepare(clk);
+ free_percpu_irq(nps_timer0_irq, &nps_clockevent_device);
+ return ret;
+ }
+
+ return 0;
}
-CLOCKSOURCE_OF_DECLARE(ezchip_nps400_clksrc, "ezchip,nps400-timer",
- nps_timer_init);
+CLOCKSOURCE_OF_DECLARE(ezchip_nps400_clk_evt, "ezchip,nps400-timer0",
+ nps_setup_clockevent);
+#endif /* CONFIG_EZNPS_MTM_EXT */
diff --git a/include/soc/arc/aux.h b/include/soc/arc/aux.h
new file mode 100644
index 000000000000..8c3fb13e0452
--- /dev/null
+++ b/include/soc/arc/aux.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016-2017 Synopsys, Inc. (www.synopsys.com)
+ *
+ * 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.
+ *
+ */
+
+#ifndef __SOC_ARC_AUX_H__
+#define __SOC_ARC_AUX_H__
+
+#ifdef CONFIG_ARC
+
+#define read_aux_reg(r) __builtin_arc_lr(r)
+
+/* gcc builtin sr needs reg param to be long immediate */
+#define write_aux_reg(r, v) __builtin_arc_sr((unsigned int)(v), r)
+
+#else /* !CONFIG_ARC */
+
+static inline int read_aux_reg(u32 r)
+{
+ return 0;
+}
+
+/*
+ * function helps elide unused variable warning
+ * see: http://lists.infradead.org/pipermail/linux-snps-arc/2016-November/001748.html
+ */
+static inline void write_aux_reg(u32 r, u32 v)
+{
+ ;
+}
+
+#endif
+
+#define READ_BCR(reg, into) \
+{ \
+ unsigned int tmp; \
+ tmp = read_aux_reg(reg); \
+ if (sizeof(tmp) == sizeof(into)) { \
+ into = *((typeof(into) *)&tmp); \
+ } else { \
+ extern void bogus_undefined(void); \
+ bogus_undefined(); \
+ } \
+}
+
+#define WRITE_AUX(reg, into) \
+{ \
+ unsigned int tmp; \
+ if (sizeof(tmp) == sizeof(into)) { \
+ tmp = (*(unsigned int *)&(into)); \
+ write_aux_reg(reg, tmp); \
+ } else { \
+ extern void bogus_undefined(void); \
+ bogus_undefined(); \
+ } \
+}
+
+
+#endif
diff --git a/arch/arc/include/asm/mcip.h b/include/soc/arc/mcip.h
index c8fbe4114bad..6902c2a8bd23 100644
--- a/arch/arc/include/asm/mcip.h
+++ b/include/soc/arc/mcip.h
@@ -8,12 +8,10 @@
* published by the Free Software Foundation.
*/
-#ifndef __ASM_MCIP_H
-#define __ASM_MCIP_H
+#ifndef __SOC_ARC_MCIP_H
+#define __SOC_ARC_MCIP_H
-#ifdef CONFIG_ISA_ARCV2
-
-#include <asm/arcregs.h>
+#include <soc/arc/aux.h>
#define ARC_REG_MCIP_BCR 0x0d0
#define ARC_REG_MCIP_CMD 0x600
@@ -103,5 +101,3 @@ static inline void __mcip_cmd_data(unsigned int cmd, unsigned int param,
}
#endif
-
-#endif
diff --git a/include/soc/arc/timers.h b/include/soc/arc/timers.h
new file mode 100644
index 000000000000..a20ed2fbc432
--- /dev/null
+++ b/include/soc/arc/timers.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2016-17 Synopsys, Inc. (www.synopsys.com)
+ *
+ * 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.
+ */
+
+#ifndef __SOC_ARC_TIMERS_H
+#define __SOC_ARC_TIMERS_H
+
+#include <soc/arc/aux.h>
+
+/* Timer related Aux registers */
+#define ARC_REG_TIMER0_LIMIT 0x23 /* timer 0 limit */
+#define ARC_REG_TIMER0_CTRL 0x22 /* timer 0 control */
+#define ARC_REG_TIMER0_CNT 0x21 /* timer 0 count */
+#define ARC_REG_TIMER1_LIMIT 0x102 /* timer 1 limit */
+#define ARC_REG_TIMER1_CTRL 0x101 /* timer 1 control */
+#define ARC_REG_TIMER1_CNT 0x100 /* timer 1 count */
+
+/* CTRL reg bits */
+#define TIMER_CTRL_IE (1 << 0) /* Interrupt when Count reaches limit */
+#define TIMER_CTRL_NH (1 << 1) /* Count only when CPU NOT halted */
+
+#define ARC_TIMERN_MAX 0xFFFFFFFF
+
+#define ARC_REG_TIMERS_BCR 0x75
+
+struct bcr_timer {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned int pad2:15, rtsc:1, pad1:5, rtc:1, t1:1, t0:1, ver:8;
+#else
+ unsigned int ver:8, t0:1, t1:1, rtc:1, pad1:5, rtsc:1, pad2:15;
+#endif
+};
+
+#endif
diff --git a/include/soc/nps/mtm.h b/include/soc/nps/mtm.h
new file mode 100644
index 000000000000..d2f5e7e3703e
--- /dev/null
+++ b/include/soc/nps/mtm.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef SOC_NPS_MTM_H
+#define SOC_NPS_MTM_H
+
+#define CTOP_INST_HWSCHD_OFF_R3 0x3B6F00BF
+#define CTOP_INST_HWSCHD_RESTORE_R3 0x3E6F70C3
+
+static inline void hw_schd_save(unsigned int *flags)
+{
+ __asm__ __volatile__(
+ " .word %1\n"
+ " st r3,[%0]\n"
+ :
+ : "r"(flags), "i"(CTOP_INST_HWSCHD_OFF_R3)
+ : "r3", "memory");
+}
+
+static inline void hw_schd_restore(unsigned int flags)
+{
+ __asm__ __volatile__(
+ " mov r3, %0\n"
+ " .word %1\n"
+ :
+ : "r"(flags), "i"(CTOP_INST_HWSCHD_RESTORE_R3)
+ : "r3");
+}
+
+#endif /* SOC_NPS_MTM_H */