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Message-ID: <20101026025608.23512.60938.stgit@warthog.procyon.org.uk>
Date: Tue, 26 Oct 2010 03:56:08 +0100
From: David Howells <dhowells@...hat.com>
To: linux-am33-list@...hat.com
Cc: linux-kernel@...r.kernel.org,
Akira Takeuchi <takeuchi.akr@...panasonic.com>,
Kiyoshi Owada <owada.kiyoshi@...panasonic.com>
Subject: [PATCH 35/43] MN10300: And Panasonic AM34 subarch and implement SMP
From: Akira Takeuchi <takeuchi.akr@...panasonic.com>
Implement the Panasonic MN10300 AM34 CPU subarch and implement SMP support for
MN10300. Also implement support for the MN2WS0060 processor and the ASB2364
evaluation board which are AM34 based.
Signed-off-by: Akira Takeuchi <takeuchi.akr@...panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@...panasonic.com>
Signed-off-by: David Howells <dhowells@...hat.com>
---
MAINTAINERS | 2
arch/mn10300/Kconfig | 119 ++
arch/mn10300/Makefile | 6
arch/mn10300/boot/compressed/head.S | 20
arch/mn10300/include/asm/exceptions.h | 2
arch/mn10300/include/asm/frame.inc | 36 +
arch/mn10300/include/asm/hardirq.h | 2
arch/mn10300/include/asm/intctl-regs.h | 37 -
arch/mn10300/include/asm/irq.h | 4
arch/mn10300/include/asm/irqflags.h | 26
arch/mn10300/include/asm/pgtable.h | 19
arch/mn10300/include/asm/processor.h | 47 +
arch/mn10300/include/asm/ptrace.h | 15
arch/mn10300/include/asm/reset-regs.h | 2
arch/mn10300/include/asm/rtc.h | 11
arch/mn10300/include/asm/rwlock.h | 125 ++
arch/mn10300/include/asm/serial-regs.h | 51 +
arch/mn10300/include/asm/serial.h | 8
arch/mn10300/include/asm/smp.h | 102 ++
arch/mn10300/include/asm/spinlock.h | 179 +++
arch/mn10300/include/asm/spinlock_types.h | 20
arch/mn10300/include/asm/system.h | 11
arch/mn10300/include/asm/timer-regs.h | 191 +++
arch/mn10300/include/asm/timex.h | 3
arch/mn10300/include/asm/uaccess.h | 2
arch/mn10300/kernel/Makefile | 3
arch/mn10300/kernel/asm-offsets.c | 2
arch/mn10300/kernel/entry.S | 113 ++
arch/mn10300/kernel/gdb-io-serial-low.S | 5
arch/mn10300/kernel/gdb-io-serial.c | 37 -
arch/mn10300/kernel/gdb-io-ttysm.c | 24
arch/mn10300/kernel/gdb-stub.c | 17
arch/mn10300/kernel/head.S | 196 +++
arch/mn10300/kernel/internal.h | 12
arch/mn10300/kernel/irq.c | 266 ++++-
arch/mn10300/kernel/mn10300-serial-low.S | 6
arch/mn10300/kernel/mn10300-serial.c | 210 +++-
arch/mn10300/kernel/mn10300-watchdog-low.S | 9
arch/mn10300/kernel/mn10300-watchdog.c | 100 +-
arch/mn10300/kernel/process.c | 41 +
arch/mn10300/kernel/profile.c | 2
arch/mn10300/kernel/rtc.c | 41 -
arch/mn10300/kernel/setup.c | 75 +
arch/mn10300/kernel/smp-low.S | 97 ++
arch/mn10300/kernel/smp.c | 1141 ++++++++++++++++++++
arch/mn10300/kernel/switch_to.S | 17
arch/mn10300/kernel/time.c | 32 -
arch/mn10300/kernel/traps.c | 18
arch/mn10300/lib/delay.c | 8
arch/mn10300/mm/fault.c | 12
arch/mn10300/proc-mn103e010/include/proc/clock.h | 2
.../proc-mn103e010/include/proc/intctl-regs.h | 29 +
arch/mn10300/proc-mn103e010/proc-init.c | 35 +
arch/mn10300/proc-mn2ws0050/Makefile | 5
arch/mn10300/proc-mn2ws0050/include/proc/cache.h | 48 +
arch/mn10300/proc-mn2ws0050/include/proc/clock.h | 20
.../proc-mn2ws0050/include/proc/dmactl-regs.h | 103 ++
.../proc-mn2ws0050/include/proc/intctl-regs.h | 29 +
arch/mn10300/proc-mn2ws0050/include/proc/irq.h | 49 +
.../proc-mn2ws0050/include/proc/nand-regs.h | 120 ++
arch/mn10300/proc-mn2ws0050/include/proc/proc.h | 18
.../mn10300/proc-mn2ws0050/include/proc/smp-regs.h | 51 +
arch/mn10300/proc-mn2ws0050/proc-init.c | 134 ++
arch/mn10300/unit-asb2303/include/unit/clock.h | 25
arch/mn10300/unit-asb2303/include/unit/serial.h | 5
arch/mn10300/unit-asb2303/include/unit/timex.h | 64 +
arch/mn10300/unit-asb2303/unit-init.c | 10
arch/mn10300/unit-asb2305/include/unit/clock.h | 25
arch/mn10300/unit-asb2305/include/unit/serial.h | 5
arch/mn10300/unit-asb2305/include/unit/timex.h | 66 +
arch/mn10300/unit-asb2305/pci.c | 2
arch/mn10300/unit-asb2305/unit-init.c | 6
arch/mn10300/unit-asb2364/Makefile | 10
arch/mn10300/unit-asb2364/include/unit/clock.h | 29 +
arch/mn10300/unit-asb2364/include/unit/fpga-regs.h | 50 +
arch/mn10300/unit-asb2364/include/unit/leds.h | 54 +
arch/mn10300/unit-asb2364/include/unit/serial.h | 151 +++
arch/mn10300/unit-asb2364/include/unit/timex.h | 125 ++
arch/mn10300/unit-asb2364/leds.c | 98 ++
arch/mn10300/unit-asb2364/unit-init.c | 85 +
80 files changed, 4495 insertions(+), 482 deletions(-)
create mode 100644 arch/mn10300/include/asm/rwlock.h
create mode 100644 arch/mn10300/include/asm/spinlock_types.h
create mode 100644 arch/mn10300/kernel/smp-low.S
create mode 100644 arch/mn10300/kernel/smp.c
create mode 100644 arch/mn10300/proc-mn103e010/include/proc/intctl-regs.h
create mode 100644 arch/mn10300/proc-mn2ws0050/Makefile
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/cache.h
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/clock.h
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/dmactl-regs.h
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/intctl-regs.h
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/irq.h
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/nand-regs.h
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/proc.h
create mode 100644 arch/mn10300/proc-mn2ws0050/include/proc/smp-regs.h
create mode 100644 arch/mn10300/proc-mn2ws0050/proc-init.c
create mode 100644 arch/mn10300/unit-asb2364/Makefile
create mode 100644 arch/mn10300/unit-asb2364/include/unit/clock.h
create mode 100644 arch/mn10300/unit-asb2364/include/unit/fpga-regs.h
create mode 100644 arch/mn10300/unit-asb2364/include/unit/leds.h
create mode 100644 arch/mn10300/unit-asb2364/include/unit/serial.h
create mode 100644 arch/mn10300/unit-asb2364/include/unit/timex.h
create mode 100644 arch/mn10300/unit-asb2364/leds.c
create mode 100644 arch/mn10300/unit-asb2364/unit-init.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 146b8a0..5ef7776 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4481,7 +4481,7 @@ L: platform-driver-x86@...r.kernel.org
S: Maintained
F: drivers/platform/x86/panasonic-laptop.c
-PANASONIC MN10300/AM33 PORT
+PANASONIC MN10300/AM33/AM34 PORT
M: David Howells <dhowells@...hat.com>
M: Koichi Yasutake <yasutake.koichi@...panasonic.com>
L: linux-am33-list@...hat.com (moderated for non-subscribers)
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig
index a0a16e6..81e2781 100644
--- a/arch/mn10300/Kconfig
+++ b/arch/mn10300/Kconfig
@@ -48,7 +48,7 @@ config GENERIC_CALIBRATE_DELAY
def_bool y
config GENERIC_CMOS_UPDATE
- def_bool y
+ def_bool n
config GENERIC_FIND_NEXT_BIT
def_bool y
@@ -72,10 +72,6 @@ config GENERIC_HARDIRQS
config HOTPLUG_CPU
def_bool n
-config HZ
- int
- default 1000
-
mainmenu "Matsushita MN10300/AM33 Kernel Configuration"
source "init/Kconfig"
@@ -98,6 +94,9 @@ config MN10300_UNIT_ASB2303
config MN10300_UNIT_ASB2305
bool "ASB2305"
+config MN10300_UNIT_ASB2364
+ bool "ASB2364"
+
endchoice
choice
@@ -115,17 +114,13 @@ config MN10300_PROC_MN103E010
select MN10300_PROC_HAS_TTYSM1
select MN10300_PROC_HAS_TTYSM2
-endchoice
-
-choice
- prompt "Processor core support"
- default MN10300_CPU_AM33V2
- help
- This option specifies the processor core for which the kernel will be
- compiled. It affects the instruction set used.
-
-config MN10300_CPU_AM33V2
- bool "AM33v2"
+config MN10300_PROC_MN2WS0050
+ bool "MN2WS0050"
+ depends on MN10300_UNIT_ASB2364
+ select AM34_2
+ select MN10300_PROC_HAS_TTYSM0
+ select MN10300_PROC_HAS_TTYSM1
+ select MN10300_PROC_HAS_TTYSM2
endchoice
@@ -138,7 +133,7 @@ config MN10300_HAS_ATOMIC_OPS_UNIT
config FPU
bool "FPU present"
default y
- depends on MN10300_PROC_MN103E010
+ depends on MN10300_PROC_MN103E010 || MN10300_PROC_MN2WS0050
config LAZY_SAVE_FPU
bool "Save FPU state lazily"
@@ -179,24 +174,55 @@ config KERNEL_TEXT_ADDRESS
config KERNEL_ZIMAGE_BASE_ADDRESS
hex "Base address of compressed vmlinux image"
- default "0x90700000"
+ default "0x50700000"
+
+config BOOT_STACK_OFFSET
+ hex
+ default "0xF00" if SMP
+ default "0xFF0" if !SMP
+config BOOT_STACK_SIZE
+ hex
+ depends on SMP
+ default "0x100"
endmenu
-config PREEMPT
- bool "Preemptible Kernel"
- help
- This option reduces the latency of the kernel when reacting to
- real-time or interactive events by allowing a low priority process to
- be preempted even if it is in kernel mode executing a system call.
- This allows applications to run more reliably even when the system is
- under load.
+config SMP
+ bool "Symmetric multi-processing support"
+ default y
+ depends on MN10300_PROC_MN2WS0038 || MN10300_PROC_MN2WS0050
+ ---help---
+ This enables support for systems with more than one CPU. If you have
+ a system with only one CPU, like most personal computers, say N. If
+ you have a system with more than one CPU, say Y.
+
+ If you say N here, the kernel will run on single and multiprocessor
+ machines, but will use only one CPU of a multiprocessor machine. If
+ you say Y here, the kernel will run on many, but not all,
+ singleprocessor machines. On a singleprocessor machine, the kernel
+ will run faster if you say N here.
+
+ See also <file:Documentation/i386/IO-APIC.txt>,
+ <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
+ <http://www.tldp.org/docs.html#howto>.
- Say Y here if you are building a kernel for a desktop, embedded
- or real-time system. Say N if you are unsure.
+ If you don't know what to do here, say N.
+
+config NR_CPUS
+ int
+ depends on SMP
+ default "2"
+
+config USE_GENERIC_SMP_HELPERS
+ bool
+ depends on SMP
+ default y
+
+source "kernel/Kconfig.preempt"
config MN10300_CURRENT_IN_E2
bool "Hold current task address in E2 register"
+ depends on !SMP
default y
help
This option removes the E2/R2 register from the set available to gcc
@@ -218,12 +244,14 @@ config MN10300_USING_JTAG
suppresses the use of certain hardware debugging features, such as
single-stepping, which are taken over completely by the JTAG unit.
+source "kernel/Kconfig.hz"
+
config MN10300_RTC
bool "Using MN10300 RTC"
- depends on MN10300_PROC_MN103E010
+ depends on MN10300_PROC_MN103E010 || MN10300_PROC_MN2WS0050
+ select GENERIC_CMOS_UPDATE
default n
help
-
This option enables support for the RTC, thus enabling time to be
tracked, even when system is powered down. This is available on-chip
on the MN103E010.
@@ -315,14 +343,23 @@ config MN10300_TTYSM1
choice
prompt "Select the timer to supply the clock for SIF1"
- default MN10300_TTYSM0_TIMER9
+ default MN10300_TTYSM1_TIMER12 \
+ if !(AM33_2 || AM33_3)
+ default MN10300_TTYSM1_TIMER9 \
+ if AM33_2 || AM33_3
depends on MN10300_TTYSM1
+config MN10300_TTYSM1_TIMER12
+ bool "Use timer 12 (16-bit)"
+ depends on !(AM33_2 || AM33_3)
+
config MN10300_TTYSM1_TIMER9
bool "Use timer 9 (16-bit)"
+ depends on AM33_2 || AM33_3
config MN10300_TTYSM1_TIMER3
bool "Use timer 3 (8-bit)"
+ depends on AM33_2 || AM33_3
endchoice
@@ -337,17 +374,33 @@ config MN10300_TTYSM2
choice
prompt "Select the timer to supply the clock for SIF2"
- default MN10300_TTYSM0_TIMER10
+ default MN10300_TTYSM2_TIMER3 \
+ if !(AM33_2 || AM33_3)
+ default MN10300_TTYSM2_TIMER10 \
+ if AM33_2 || AM33_3
depends on MN10300_TTYSM2
+config MN10300_TTYSM2_TIMER9
+ bool "Use timer 9 (16-bit)"
+ depends on !(AM33_2 || AM33_3)
+
+config MN10300_TTYSM2_TIMER1
+ bool "Use timer 1 (8-bit)"
+ depends on !(AM33_2 || AM33_3)
+
+config MN10300_TTYSM2_TIMER3
+ bool "Use timer 3 (8-bit)"
+ depends on !(AM33_2 || AM33_3)
+
config MN10300_TTYSM2_TIMER10
bool "Use timer 10 (16-bit)"
+ depends on AM33_2 || AM33_3
endchoice
config MN10300_TTYSM2_CTS
bool "Enable the use of the CTS line /dev/ttySM2"
- depends on MN10300_TTYSM2
+ depends on MN10300_TTYSM2 && AM33_2
endmenu
diff --git a/arch/mn10300/Makefile b/arch/mn10300/Makefile
index ac5c6bd..7120282 100644
--- a/arch/mn10300/Makefile
+++ b/arch/mn10300/Makefile
@@ -36,6 +36,9 @@ endif
ifeq ($(CONFIG_MN10300_PROC_MN103E010),y)
PROCESSOR := mn103e010
endif
+ifeq ($(CONFIG_MN10300_PROC_MN2WS0050),y)
+PROCESSOR := mn2ws0050
+endif
ifeq ($(CONFIG_MN10300_UNIT_ASB2303),y)
UNIT := asb2303
@@ -43,6 +46,9 @@ endif
ifeq ($(CONFIG_MN10300_UNIT_ASB2305),y)
UNIT := asb2305
endif
+ifeq ($(CONFIG_MN10300_UNIT_ASB2364),y)
+UNIT := asb2364
+endif
head-y := arch/mn10300/kernel/head.o arch/mn10300/kernel/init_task.o
diff --git a/arch/mn10300/boot/compressed/head.S b/arch/mn10300/boot/compressed/head.S
index 4ef608a..7b50345 100644
--- a/arch/mn10300/boot/compressed/head.S
+++ b/arch/mn10300/boot/compressed/head.S
@@ -15,10 +15,28 @@
#include <linux/linkage.h>
#include <asm/cpu-regs.h>
#include <asm/cache.h>
+#ifdef CONFIG_SMP
+#include <proc/smp-regs.h>
+#endif
.globl startup_32
startup_32:
- # first save off parameters from bootloader
+#ifdef CONFIG_SMP
+ #
+ # Secondary CPUs jump directly to the kernel entry point
+ #
+ # Must save primary CPU's D0-D2 registers as they hold boot parameters
+ #
+ mov (CPUID), d3
+ and CPUID_MASK,d3
+ beq startup_primary
+ mov CONFIG_KERNEL_TEXT_ADDRESS,a0
+ jmp (a0)
+
+startup_primary:
+#endif /* CONFIG_SMP */
+
+ # first save parameters from bootloader
mov param_save_area,a0
mov d0,(a0)
mov d1,(4,a0)
diff --git a/arch/mn10300/include/asm/exceptions.h b/arch/mn10300/include/asm/exceptions.h
index 7d8080b..ca3e205 100644
--- a/arch/mn10300/include/asm/exceptions.h
+++ b/arch/mn10300/include/asm/exceptions.h
@@ -114,6 +114,8 @@ extern void die(const char *, struct pt_regs *, enum exception_code)
extern int die_if_no_fixup(const char *, struct pt_regs *, enum exception_code);
+#define NUM2EXCEP_IRQ_LEVEL(num) (EXCEP_IRQ_LEVEL0 + (num) * 8)
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_EXCEPTIONS_H */
diff --git a/arch/mn10300/include/asm/frame.inc b/arch/mn10300/include/asm/frame.inc
index 5b1949b..406060e 100644
--- a/arch/mn10300/include/asm/frame.inc
+++ b/arch/mn10300/include/asm/frame.inc
@@ -18,6 +18,9 @@
#ifndef __ASM_OFFSETS_H__
#include <asm/asm-offsets.h>
#endif
+#ifdef CONFIG_SMP
+#include <proc/smp-regs.h>
+#endif
#define pi break
@@ -37,9 +40,25 @@
movm [d2,d3,a2,a3,exreg0,exreg1,exother],(sp)
mov sp,fp # FRAME pointer in A3
add -12,sp # allow for calls to be made
+#ifdef CONFIG_SMP
+#ifdef CONFIG_PREEMPT /* FIXME */
+ mov epsw,d2
+ and ~EPSW_IE,epsw
+#endif
+ mov (CPUID),a0
+ add a0,a0
+ add a0,a0
+ mov (___frame,a0),a1
+ mov a1,(REG_NEXT,fp)
+ mov fp,(___frame,a0)
+#ifdef CONFIG_PREEMPT /* FIXME */
+ mov d2,epsw
+#endif
+#else /* CONFIG_SMP */
mov (__frame),a1
mov a1,(REG_NEXT,fp)
mov fp,(__frame)
+#endif /* CONFIG_SMP */
and ~EPSW_FE,epsw # disable the FPU inside the kernel
@@ -57,10 +76,27 @@
.macro RESTORE_ALL
# peel back the stack to the calling frame
# - this permits execve() to discard extra frames due to kernel syscalls
+#ifdef CONFIG_SMP
+#ifdef CONFIG_PREEMPT /* FIXME */
+ mov epsw,d2
+ and ~EPSW_IE,epsw
+#endif
+ mov (CPUID),a0
+ add a0,a0
+ add a0,a0
+ mov (___frame,a0),fp
+ mov fp,sp
+ mov (REG_NEXT,fp),d0 # userspace has regs->next == 0
+ mov d0,(___frame,a0)
+#ifdef CONFIG_PREEMPT /* FIXME */
+ mov d2,epsw
+#endif
+#else /* CONFIG_SMP */
mov (__frame),fp
mov fp,sp
mov (REG_NEXT,fp),d0 # userspace has regs->next == 0
mov d0,(__frame)
+#endif /* CONFIG_SMP */
#ifndef CONFIG_MN10300_USING_JTAG
mov (REG_EPSW,fp),d0
diff --git a/arch/mn10300/include/asm/hardirq.h b/arch/mn10300/include/asm/hardirq.h
index 7bd9b7c..0000d65 100644
--- a/arch/mn10300/include/asm/hardirq.h
+++ b/arch/mn10300/include/asm/hardirq.h
@@ -19,8 +19,10 @@
/* assembly code in softirq.h is sensitive to the offsets of these fields */
typedef struct {
unsigned int __softirq_pending;
+#ifdef CONFIG_MN10300_WD_TIMER
unsigned int __nmi_count; /* arch dependent */
unsigned int __irq_count; /* arch dependent */
+#endif
} ____cacheline_aligned irq_cpustat_t;
#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
diff --git a/arch/mn10300/include/asm/intctl-regs.h b/arch/mn10300/include/asm/intctl-regs.h
index ba544c7..585b708 100644
--- a/arch/mn10300/include/asm/intctl-regs.h
+++ b/arch/mn10300/include/asm/intctl-regs.h
@@ -15,24 +15,19 @@
#ifdef __KERNEL__
-/* interrupt controller registers */
-#define GxICR(X) __SYSREG(0xd4000000 + (X) * 4, u16) /* group irq ctrl regs */
-
-#define IAGR __SYSREG(0xd4000100, u16) /* intr acceptance group reg */
-#define IAGR_GN 0x00fc /* group number register
- * (documentation _has_ to be wrong)
- */
+/*
+ * Interrupt controller registers
+ * - Registers 64-191 are at addresses offset from the main array
+ */
+#define GxICR(X) \
+ __SYSREG(0xd4000000 + (X) * 4 + \
+ (((X) >= 64) && ((X) < 192)) * 0xf00, u16)
-#define EXTMD __SYSREG(0xd4000200, u16) /* external pin intr spec reg */
-#define GET_XIRQ_TRIGGER(X) ((EXTMD >> ((X) * 2)) & 3)
+#define GxICR_u8(X) \
+ __SYSREG(0xd4000000 + (X) * 4 + \
+ (((X) >= 64) && ((X) < 192)) * 0xf00, u8)
-#define SET_XIRQ_TRIGGER(X,Y) \
-do { \
- u16 x = EXTMD; \
- x &= ~(3 << ((X) * 2)); \
- x |= ((Y) & 3) << ((X) * 2); \
- EXTMD = x; \
-} while (0)
+#include <proc/intctl-regs.h>
#define XIRQ_TRIGGER_LOWLEVEL 0
#define XIRQ_TRIGGER_HILEVEL 1
@@ -59,10 +54,18 @@ do { \
#define GxICR_LEVEL_5 0x5000 /* - level 5 */
#define GxICR_LEVEL_6 0x6000 /* - level 6 */
#define GxICR_LEVEL_SHIFT 12
+#define GxICR_NMI 0x8000 /* nmi request flag */
+
+#define NUM2GxICR_LEVEL(num) ((num) << GxICR_LEVEL_SHIFT)
#ifndef __ASSEMBLY__
extern void set_intr_level(int irq, u16 level);
-extern void set_intr_postackable(int irq);
+extern void mn10300_intc_set_level(unsigned int irq, unsigned int level);
+extern void mn10300_intc_clear(unsigned int irq);
+extern void mn10300_intc_set(unsigned int irq);
+extern void mn10300_intc_enable(unsigned int irq);
+extern void mn10300_intc_disable(unsigned int irq);
+extern void mn10300_set_lateack_irq_type(int irq);
#endif
/* external interrupts */
diff --git a/arch/mn10300/include/asm/irq.h b/arch/mn10300/include/asm/irq.h
index 25c045d..b7b8e17 100644
--- a/arch/mn10300/include/asm/irq.h
+++ b/arch/mn10300/include/asm/irq.h
@@ -22,7 +22,11 @@
#define NO_IRQ INT_MAX
/* hardware irq numbers */
+#ifdef CONFIG_SMP
+#define NR_IRQS GxICR_NUM_EXT_IRQS
+#else
#define NR_IRQS GxICR_NUM_IRQS
+#endif
/* external hardware irq numbers */
#define NR_XIRQS GxICR_NUM_XIRQS
diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h
index b3ab207..7a7ae12 100644
--- a/arch/mn10300/include/asm/irqflags.h
+++ b/arch/mn10300/include/asm/irqflags.h
@@ -13,6 +13,9 @@
#define _ASM_IRQFLAGS_H
#include <asm/cpu-regs.h>
+#ifndef __ASSEMBLY__
+#include <linux/smp.h>
+#endif
/*
* interrupt control
@@ -60,11 +63,12 @@ static inline unsigned long arch_local_irq_save(void)
/*
* we make sure arch_irq_enable() doesn't cause priority inversion
*/
-extern unsigned long __mn10300_irq_enabled_epsw;
+extern unsigned long __mn10300_irq_enabled_epsw[];
static inline void arch_local_irq_enable(void)
{
unsigned long tmp;
+ int cpu = raw_smp_processor_id();
asm volatile(
" mov epsw,%0 \n"
@@ -72,8 +76,8 @@ static inline void arch_local_irq_enable(void)
" or %2,%0 \n"
" mov %0,epsw \n"
: "=&d"(tmp)
- : "i"(~EPSW_IM), "r"(__mn10300_irq_enabled_epsw)
- : "memory");
+ : "i"(~EPSW_IM), "r"(__mn10300_irq_enabled_epsw[cpu])
+ : "memory", "cc");
}
static inline void arch_local_irq_restore(unsigned long flags)
@@ -105,6 +109,9 @@ static inline bool arch_irqs_disabled(void)
*/
static inline void arch_safe_halt(void)
{
+#ifdef CONFIG_SMP
+ arch_local_irq_enable();
+#else
asm volatile(
" or %0,epsw \n"
" nop \n"
@@ -113,8 +120,21 @@ static inline void arch_safe_halt(void)
:
: "i"(EPSW_IE|EPSW_IM), "n"(&CPUM), "i"(CPUM_SLEEP)
: "cc");
+#endif
}
+#define __sleep_cpu() \
+do { \
+ asm volatile( \
+ " bset %1,(%0)\n" \
+ "1: btst %1,(%0)\n" \
+ " bne 1b\n" \
+ : \
+ : "i"(&CPUM), "i"(CPUM_SLEEP) \
+ : "cc" \
+ ); \
+} while (0)
+
static inline void arch_local_cli(void)
{
asm volatile(
diff --git a/arch/mn10300/include/asm/pgtable.h b/arch/mn10300/include/asm/pgtable.h
index 93c3294..ba66606 100644
--- a/arch/mn10300/include/asm/pgtable.h
+++ b/arch/mn10300/include/asm/pgtable.h
@@ -90,9 +90,15 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
* The vmalloc() routines also leaves a hole of 4kB between each vmalloced
* area to catch addressing errors.
*/
+#ifndef __ASSEMBLY__
+#define VMALLOC_OFFSET (8UL * 1024 * 1024)
+#define VMALLOC_START (0x70000000UL)
+#define VMALLOC_END (0x7C000000UL)
+#else
#define VMALLOC_OFFSET (8 * 1024 * 1024)
#define VMALLOC_START (0x70000000)
#define VMALLOC_END (0x7C000000)
+#endif
#ifndef __ASSEMBLY__
extern pte_t kernel_vmalloc_ptes[(VMALLOC_END - VMALLOC_START) / PAGE_SIZE];
@@ -329,11 +335,7 @@ static inline int pte_exec_kernel(pte_t pte)
return 1;
}
-/*
- * Bits 0 and 1 are taken, split up the 29 bits of offset
- * into this range:
- */
-#define PTE_FILE_MAX_BITS 29
+#define PTE_FILE_MAX_BITS 30
#define pte_to_pgoff(pte) (pte_val(pte) >> 2)
#define pgoff_to_pte(off) __pte((off) << 2 | _PAGE_FILE)
@@ -379,8 +381,13 @@ static inline void ptep_mkdirty(pte_t *ptep)
* Macro to mark a page protection value as "uncacheable". On processors which
* do not support it, this is a no-op.
*/
-#define pgprot_noncached(prot) __pgprot(pgprot_val(prot) | _PAGE_CACHE)
+#define pgprot_noncached(prot) __pgprot(pgprot_val(prot) & ~_PAGE_CACHE)
+/*
+ * Macro to mark a page protection value as "Write-Through".
+ * On processors which do not support it, this is a no-op.
+ */
+#define pgprot_through(prot) __pgprot(pgprot_val(prot) | _PAGE_CACHE_WT)
/*
* Conversion functions: convert a page and protection to a page entry,
diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h
index 0032fc7..75c422a 100644
--- a/arch/mn10300/include/asm/processor.h
+++ b/arch/mn10300/include/asm/processor.h
@@ -33,6 +33,8 @@ struct mm_struct;
__pc; \
})
+extern void get_mem_info(unsigned long *mem_base, unsigned long *mem_size);
+
extern void show_registers(struct pt_regs *regs);
/*
@@ -43,17 +45,22 @@ extern void show_registers(struct pt_regs *regs);
struct mn10300_cpuinfo {
int type;
- unsigned long loops_per_sec;
+ unsigned long loops_per_jiffy;
char hard_math;
- unsigned long *pgd_quick;
- unsigned long *pte_quick;
- unsigned long pgtable_cache_sz;
};
extern struct mn10300_cpuinfo boot_cpu_data;
+#ifdef CONFIG_SMP
+#if CONFIG_NR_CPUS < 2 || CONFIG_NR_CPUS > 8
+# error Sorry, NR_CPUS should be 2 to 8
+#endif
+extern struct mn10300_cpuinfo cpu_data[];
+#define current_cpu_data cpu_data[smp_processor_id()]
+#else /* CONFIG_SMP */
#define cpu_data &boot_cpu_data
#define current_cpu_data boot_cpu_data
+#endif /* CONFIG_SMP */
extern void identify_cpu(struct mn10300_cpuinfo *);
extern void print_cpu_info(struct mn10300_cpuinfo *);
@@ -92,21 +99,21 @@ struct thread_struct {
unsigned long a3; /* kernel FP */
unsigned long wchan;
unsigned long usp;
- struct pt_regs *__frame;
+ struct pt_regs *frame;
unsigned long fpu_flags;
#define THREAD_USING_FPU 0x00000001 /* T if this task is using the FPU */
#define THREAD_HAS_FPU 0x00000002 /* T if this task owns the FPU right now */
struct fpu_state_struct fpu_state;
};
-#define INIT_THREAD \
-{ \
- .uregs = init_uregs, \
- .pc = 0, \
- .sp = 0, \
- .a3 = 0, \
- .wchan = 0, \
- .__frame = NULL, \
+#define INIT_THREAD \
+{ \
+ .uregs = init_uregs, \
+ .pc = 0, \
+ .sp = 0, \
+ .a3 = 0, \
+ .wchan = 0, \
+ .frame = NULL, \
}
#define INIT_MMAP \
@@ -118,6 +125,19 @@ struct thread_struct {
* - need to discard the frame stacked by the kernel thread invoking the execve
* syscall (see RESTORE_ALL macro)
*/
+#if defined(CONFIG_SMP) && defined(CONFIG_PREEMPT) /* FIXME */
+#define start_thread(regs, new_pc, new_sp) do { \
+ int cpu; \
+ preempt_disable(); \
+ cpu = CPUID; \
+ set_fs(USER_DS); \
+ ___frame[cpu] = current->thread.uregs; \
+ ___frame[cpu]->epsw = EPSW_nSL | EPSW_IE | EPSW_IM;\
+ ___frame[cpu]->pc = new_pc; \
+ ___frame[cpu]->sp = new_sp; \
+ preempt_enable(); \
+} while (0)
+#else /* CONFIG_SMP && CONFIG_PREEMPT */
#define start_thread(regs, new_pc, new_sp) do { \
set_fs(USER_DS); \
__frame = current->thread.uregs; \
@@ -125,6 +145,7 @@ struct thread_struct {
__frame->pc = new_pc; \
__frame->sp = new_sp; \
} while (0)
+#endif /* CONFIG_SMP && CONFIG_PREEMPT */
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
diff --git a/arch/mn10300/include/asm/ptrace.h b/arch/mn10300/include/asm/ptrace.h
index 7c2e911..c2b77bd 100644
--- a/arch/mn10300/include/asm/ptrace.h
+++ b/arch/mn10300/include/asm/ptrace.h
@@ -40,7 +40,6 @@
#define PT_PC 26
#define NR_PTREGS 27
-#ifndef __ASSEMBLY__
/*
* This defines the way registers are stored in the event of an exception
* - the strange order is due to the MOVM instruction
@@ -75,7 +74,6 @@ struct pt_regs {
unsigned long epsw;
unsigned long pc;
};
-#endif
/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS 12
@@ -86,12 +84,13 @@ struct pt_regs {
/* options set using PTRACE_SETOPTIONS */
#define PTRACE_O_TRACESYSGOOD 0x00000001
-#if defined(__KERNEL__)
+#ifdef __KERNEL__
+#ifdef CONFIG_SMP
+extern struct pt_regs *___frame[]; /* current frame pointer */
+#else
extern struct pt_regs *__frame; /* current frame pointer */
-
-#if !defined(__ASSEMBLY__)
-struct task_struct;
+#endif
#define user_mode(regs) (((regs)->epsw & EPSW_nSL) == EPSW_nSL)
#define instruction_pointer(regs) ((regs)->pc)
@@ -100,9 +99,7 @@ extern void show_regs(struct pt_regs *);
#define arch_has_single_step() (1)
-#endif /* !__ASSEMBLY */
-
#define profile_pc(regs) ((regs)->pc)
-#endif /* __KERNEL__ */
+#endif /* __KERNEL__ */
#endif /* _ASM_PTRACE_H */
diff --git a/arch/mn10300/include/asm/reset-regs.h b/arch/mn10300/include/asm/reset-regs.h
index 174523d..10c7502 100644
--- a/arch/mn10300/include/asm/reset-regs.h
+++ b/arch/mn10300/include/asm/reset-regs.h
@@ -50,7 +50,7 @@ static inline void mn10300_proc_hard_reset(void)
RSTCTR |= RSTCTR_CHIPRST;
}
-extern unsigned int watchdog_alert_counter;
+extern unsigned int watchdog_alert_counter[];
extern void watchdog_go(void);
extern asmlinkage void watchdog_handler(void);
diff --git a/arch/mn10300/include/asm/rtc.h b/arch/mn10300/include/asm/rtc.h
index c295194..6c14bb1 100644
--- a/arch/mn10300/include/asm/rtc.h
+++ b/arch/mn10300/include/asm/rtc.h
@@ -15,25 +15,14 @@
#include <linux/init.h>
-extern void check_rtc_time(void);
extern void __init calibrate_clock(void);
-extern unsigned long __init get_initial_rtc_time(void);
#else /* !CONFIG_MN10300_RTC */
-static inline void check_rtc_time(void)
-{
-}
-
static inline void calibrate_clock(void)
{
}
-static inline unsigned long get_initial_rtc_time(void)
-{
- return 0;
-}
-
#endif /* !CONFIG_MN10300_RTC */
#include <asm-generic/rtc.h>
diff --git a/arch/mn10300/include/asm/rwlock.h b/arch/mn10300/include/asm/rwlock.h
new file mode 100644
index 0000000..6d594d4
--- /dev/null
+++ b/arch/mn10300/include/asm/rwlock.h
@@ -0,0 +1,125 @@
+/*
+ * Helpers used by both rw spinlocks and rw semaphores.
+ *
+ * Based in part on code from semaphore.h and
+ * spinlock.h Copyright 1996 Linus Torvalds.
+ *
+ * Copyright 1999 Red Hat, Inc.
+ *
+ * Written by Benjamin LaHaise.
+ *
+ * Modified by Matsushita Electric Industrial Co., Ltd.
+ * Modifications:
+ * 13-Nov-2006 MEI Temporarily delete lock functions for SMP support.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+#ifndef _ASM_RWLOCK_H
+#define _ASM_RWLOCK_H
+
+#define RW_LOCK_BIAS 0x01000000
+
+#ifndef CONFIG_SMP
+
+typedef struct { unsigned long a[100]; } __dummy_lock_t;
+#define __dummy_lock(lock) (*(__dummy_lock_t *)(lock))
+
+#define RW_LOCK_BIAS_STR "0x01000000"
+
+#define __build_read_lock_ptr(rw, helper) \
+ do { \
+ asm volatile( \
+ " mov (%0),d3 \n" \
+ " sub 1,d3 \n" \
+ " mov d3,(%0) \n" \
+ " blt 1f \n" \
+ " bra 2f \n" \
+ "1: jmp 3f \n" \
+ "2: \n" \
+ " .section .text.lock,\"ax\" \n" \
+ "3: call "helper"[],0 \n" \
+ " jmp 2b \n" \
+ " .previous" \
+ : \
+ : "d" (rw) \
+ : "memory", "d3", "cc"); \
+ } while (0)
+
+#define __build_read_lock_const(rw, helper) \
+ do { \
+ asm volatile( \
+ " mov (%0),d3 \n" \
+ " sub 1,d3 \n" \
+ " mov d3,(%0) \n" \
+ " blt 1f \n" \
+ " bra 2f \n" \
+ "1: jmp 3f \n" \
+ "2: \n" \
+ " .section .text.lock,\"ax\" \n" \
+ "3: call "helper"[],0 \n" \
+ " jmp 2b \n" \
+ " .previous" \
+ : \
+ : "d" (rw) \
+ : "memory", "d3", "cc"); \
+ } while (0)
+
+#define __build_read_lock(rw, helper) \
+ do { \
+ if (__builtin_constant_p(rw)) \
+ __build_read_lock_const(rw, helper); \
+ else \
+ __build_read_lock_ptr(rw, helper); \
+ } while (0)
+
+#define __build_write_lock_ptr(rw, helper) \
+ do { \
+ asm volatile( \
+ " mov (%0),d3 \n" \
+ " sub 1,d3 \n" \
+ " mov d3,(%0) \n" \
+ " blt 1f \n" \
+ " bra 2f \n" \
+ "1: jmp 3f \n" \
+ "2: \n" \
+ " .section .text.lock,\"ax\" \n" \
+ "3: call "helper"[],0 \n" \
+ " jmp 2b \n" \
+ " .previous" \
+ : \
+ : "d" (rw) \
+ : "memory", "d3", "cc"); \
+ } while (0)
+
+#define __build_write_lock_const(rw, helper) \
+ do { \
+ asm volatile( \
+ " mov (%0),d3 \n" \
+ " sub 1,d3 \n" \
+ " mov d3,(%0) \n" \
+ " blt 1f \n" \
+ " bra 2f \n" \
+ "1: jmp 3f \n" \
+ "2: \n" \
+ " .section .text.lock,\"ax\" \n" \
+ "3: call "helper"[],0 \n" \
+ " jmp 2b \n" \
+ " .previous" \
+ : \
+ : "d" (rw) \
+ : "memory", "d3", "cc"); \
+ } while (0)
+
+#define __build_write_lock(rw, helper) \
+ do { \
+ if (__builtin_constant_p(rw)) \
+ __build_write_lock_const(rw, helper); \
+ else \
+ __build_write_lock_ptr(rw, helper); \
+ } while (0)
+
+#endif /* CONFIG_SMP */
+#endif /* _ASM_RWLOCK_H */
diff --git a/arch/mn10300/include/asm/serial-regs.h b/arch/mn10300/include/asm/serial-regs.h
index 6498469..8320cda 100644
--- a/arch/mn10300/include/asm/serial-regs.h
+++ b/arch/mn10300/include/asm/serial-regs.h
@@ -20,18 +20,25 @@
/* serial port 0 */
#define SC0CTR __SYSREG(0xd4002000, u16) /* control reg */
#define SC01CTR_CK 0x0007 /* clock source select */
-#define SC0CTR_CK_TM8UFLOW_8 0x0000 /* - 1/8 timer 8 underflow (serial port 0 only) */
-#define SC1CTR_CK_TM9UFLOW_8 0x0000 /* - 1/8 timer 9 underflow (serial port 1 only) */
#define SC01CTR_CK_IOCLK_8 0x0001 /* - 1/8 IOCLK */
#define SC01CTR_CK_IOCLK_32 0x0002 /* - 1/32 IOCLK */
+#define SC01CTR_CK_EXTERN_8 0x0006 /* - 1/8 external closk */
+#define SC01CTR_CK_EXTERN 0x0007 /* - external closk */
+#if defined(CONFIG_AM33_2) || defined(CONFIG_AM33_3)
+#define SC0CTR_CK_TM8UFLOW_8 0x0000 /* - 1/8 timer 8 underflow (serial port 0 only) */
#define SC0CTR_CK_TM2UFLOW_2 0x0003 /* - 1/2 timer 2 underflow (serial port 0 only) */
-#define SC1CTR_CK_TM3UFLOW_2 0x0003 /* - 1/2 timer 3 underflow (serial port 1 only) */
-#define SC0CTR_CK_TM0UFLOW_8 0x0004 /* - 1/8 timer 1 underflow (serial port 0 only) */
-#define SC1CTR_CK_TM1UFLOW_8 0x0004 /* - 1/8 timer 2 underflow (serial port 1 only) */
+#define SC0CTR_CK_TM0UFLOW_8 0x0004 /* - 1/8 timer 0 underflow (serial port 0 only) */
#define SC0CTR_CK_TM2UFLOW_8 0x0005 /* - 1/8 timer 2 underflow (serial port 0 only) */
+#define SC1CTR_CK_TM9UFLOW_8 0x0000 /* - 1/8 timer 9 underflow (serial port 1 only) */
+#define SC1CTR_CK_TM3UFLOW_2 0x0003 /* - 1/2 timer 3 underflow (serial port 1 only) */
+#define SC1CTR_CK_TM1UFLOW_8 0x0004 /* - 1/8 timer 1 underflow (serial port 1 only) */
#define SC1CTR_CK_TM3UFLOW_8 0x0005 /* - 1/8 timer 3 underflow (serial port 1 only) */
-#define SC01CTR_CK_EXTERN_8 0x0006 /* - 1/8 external closk */
-#define SC01CTR_CK_EXTERN 0x0007 /* - external closk */
+#else /* CONFIG_AM33_2 || CONFIG_AM33_3 */
+#define SC0CTR_CK_TM8UFLOW_8 0x0000 /* - 1/8 timer 8 underflow (serial port 0 only) */
+#define SC0CTR_CK_TM0UFLOW_8 0x0004 /* - 1/8 timer 0 underflow (serial port 0 only) */
+#define SC0CTR_CK_TM2UFLOW_8 0x0005 /* - 1/8 timer 2 underflow (serial port 0 only) */
+#define SC1CTR_CK_TM12UFLOW_8 0x0000 /* - 1/8 timer 12 underflow (serial port 1 only) */
+#endif /* CONFIG_AM33_2 || CONFIG_AM33_3 */
#define SC01CTR_STB 0x0008 /* stop bit select */
#define SC01CTR_STB_1BIT 0x0000 /* - 1 stop bit */
#define SC01CTR_STB_2BIT 0x0008 /* - 2 stop bits */
@@ -100,11 +107,23 @@
/* serial port 2 */
#define SC2CTR __SYSREG(0xd4002020, u16) /* control reg */
+#ifdef CONFIG_AM33_2
#define SC2CTR_CK 0x0003 /* clock source select */
#define SC2CTR_CK_TM10UFLOW 0x0000 /* - timer 10 underflow */
#define SC2CTR_CK_TM2UFLOW 0x0001 /* - timer 2 underflow */
#define SC2CTR_CK_EXTERN 0x0002 /* - external closk */
#define SC2CTR_CK_TM3UFLOW 0x0003 /* - timer 3 underflow */
+#else /* CONFIG_AM33_2 */
+#define SC2CTR_CK 0x0007 /* clock source select */
+#define SC2CTR_CK_TM9UFLOW_8 0x0000 /* - 1/8 timer 9 underflow */
+#define SC2CTR_CK_IOCLK_8 0x0001 /* - 1/8 IOCLK */
+#define SC2CTR_CK_IOCLK_32 0x0002 /* - 1/32 IOCLK */
+#define SC2CTR_CK_TM3UFLOW_2 0x0003 /* - 1/2 timer 3 underflow */
+#define SC2CTR_CK_TM1UFLOW_8 0x0004 /* - 1/8 timer 1 underflow */
+#define SC2CTR_CK_TM3UFLOW_8 0x0005 /* - 1/8 timer 3 underflow */
+#define SC2CTR_CK_EXTERN_8 0x0006 /* - 1/8 external closk */
+#define SC2CTR_CK_EXTERN 0x0007 /* - external closk */
+#endif /* CONFIG_AM33_2 */
#define SC2CTR_STB 0x0008 /* stop bit select */
#define SC2CTR_STB_1BIT 0x0000 /* - 1 stop bit */
#define SC2CTR_STB_2BIT 0x0008 /* - 2 stop bits */
@@ -134,9 +153,14 @@
#define SC2ICR_RES 0x04 /* receive error select */
#define SC2ICR_RI 0x01 /* receive interrupt cause */
-#define SC2TXB __SYSREG(0xd4002018, u8) /* transmit buffer reg */
-#define SC2RXB __SYSREG(0xd4002019, u8) /* receive buffer reg */
-#define SC2STR __SYSREG(0xd400201c, u8) /* status reg */
+#define SC2TXB __SYSREG(0xd4002028, u8) /* transmit buffer reg */
+#define SC2RXB __SYSREG(0xd4002029, u8) /* receive buffer reg */
+
+#ifdef CONFIG_AM33_2
+#define SC2STR __SYSREG(0xd400202c, u8) /* status reg */
+#else /* CONFIG_AM33_2 */
+#define SC2STR __SYSREG(0xd400202c, u16) /* status reg */
+#endif /* CONFIG_AM33_2 */
#define SC2STR_OEF 0x0001 /* overrun error found */
#define SC2STR_PEF 0x0002 /* parity error found */
#define SC2STR_FEF 0x0004 /* framing error found */
@@ -146,10 +170,17 @@
#define SC2STR_RXF 0x0040 /* receive status */
#define SC2STR_TXF 0x0080 /* transmit status */
+#ifdef CONFIG_AM33_2
#define SC2TIM __SYSREG(0xd400202d, u8) /* status reg */
+#endif
+#ifdef CONFIG_AM33_2
#define SC2RXIRQ 24 /* serial 2 Receive IRQ */
#define SC2TXIRQ 25 /* serial 2 Transmit IRQ */
+#else /* CONFIG_AM33_2 */
+#define SC2RXIRQ 68 /* serial 2 Receive IRQ */
+#define SC2TXIRQ 69 /* serial 2 Transmit IRQ */
+#endif /* CONFIG_AM33_2 */
#define SC2RXICR GxICR(SC2RXIRQ) /* serial 2 receive intr ctrl reg */
#define SC2TXICR GxICR(SC2TXIRQ) /* serial 2 transmit intr ctrl reg */
diff --git a/arch/mn10300/include/asm/serial.h b/arch/mn10300/include/asm/serial.h
index a29445c..23a7992 100644
--- a/arch/mn10300/include/asm/serial.h
+++ b/arch/mn10300/include/asm/serial.h
@@ -9,10 +9,8 @@
* 2 of the Licence, or (at your option) any later version.
*/
-/*
- * The ASB2305 has an 18.432 MHz clock the UART
- */
-#define BASE_BAUD (18432000 / 16)
+#ifndef _ASM_SERIAL_H
+#define _ASM_SERIAL_H
/* Standard COM flags (except for COM4, because of the 8514 problem) */
#ifdef CONFIG_SERIAL_DETECT_IRQ
@@ -34,3 +32,5 @@
#endif
#include <unit/serial.h>
+
+#endif /* _ASM_SERIAL_H */
diff --git a/arch/mn10300/include/asm/smp.h b/arch/mn10300/include/asm/smp.h
index 4eb8c61..b8585b4 100644
--- a/arch/mn10300/include/asm/smp.h
+++ b/arch/mn10300/include/asm/smp.h
@@ -3,6 +3,16 @@
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@...hat.com)
*
+ * Modified by Matsushita Electric Industrial Co., Ltd.
+ * Modifications:
+ * 13-Nov-2006 MEI Define IPI-IRQ number and add inline/macro function
+ * for SMP support.
+ * 22-Jan-2007 MEI Add the define related to SMP_BOOT_IRQ.
+ * 23-Feb-2007 MEI Add the define related to SMP icahce invalidate.
+ * 23-Jun-2008 MEI Delete INTC_IPI.
+ * 22-Jul-2008 MEI Add smp_nmi_call_function and related defines.
+ * 04-Aug-2008 MEI Delete USE_DOIRQ_CACHE_IPI.
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
@@ -11,8 +21,98 @@
#ifndef _ASM_SMP_H
#define _ASM_SMP_H
+#ifndef __ASSEMBLY__
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#endif
+
#ifdef CONFIG_SMP
-#error SMP not yet supported for MN10300
+#include <proc/smp-regs.h>
+
+#define RESCHEDULE_IPI 63
+#define CALL_FUNC_SINGLE_IPI 192
+#define LOCAL_TIMER_IPI 193
+#define FLUSH_CACHE_IPI 194
+#define CALL_FUNCTION_NMI_IPI 195
+#define GDB_NMI_IPI 196
+
+#define SMP_BOOT_IRQ 195
+
+#define RESCHEDULE_GxICR_LV GxICR_LEVEL_6
+#define CALL_FUNCTION_GxICR_LV GxICR_LEVEL_4
+#define LOCAL_TIMER_GxICR_LV GxICR_LEVEL_4
+#define FLUSH_CACHE_GxICR_LV GxICR_LEVEL_0
+#define SMP_BOOT_GxICR_LV GxICR_LEVEL_0
+
+#define TIME_OUT_COUNT_BOOT_IPI 100
+#define DELAY_TIME_BOOT_IPI 75000
+
+
+#ifndef __ASSEMBLY__
+
+/**
+ * raw_smp_processor_id - Determine the raw CPU ID of the CPU running it
+ *
+ * What we really want to do is to use the CPUID hardware CPU register to get
+ * this information, but accesses to that aren't cached, and run at system bus
+ * speed, not CPU speed. A copy of this value is, however, stored in the
+ * thread_info struct, and that can be cached.
+ *
+ * An alternate way of dealing with this could be to use the EPSW.S bits to
+ * cache this information for systems with up to four CPUs.
+ */
+#if 0
+#define raw_smp_processor_id() (CPUID)
+#else
+#define raw_smp_processor_id() (current_thread_info()->cpu)
#endif
+static inline int cpu_logical_map(int cpu)
+{
+ return cpu;
+}
+
+static inline int cpu_number_map(int cpu)
+{
+ return cpu;
+}
+
+
+extern cpumask_t cpu_boot_map;
+
+extern void smp_init_cpus(void);
+extern void smp_cache_interrupt(void);
+extern void send_IPI_allbutself(int irq);
+extern int smp_nmi_call_function(smp_call_func_t func, void *info, int wait);
+
+extern void arch_send_call_function_single_ipi(int cpu);
+extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
+
+#ifdef CONFIG_HOTPLUG_CPU
+extern int __cpu_disable(void);
+extern void __cpu_die(unsigned int cpu);
+#endif /* CONFIG_HOTPLUG_CPU */
+
+#ifdef CONFIG_PREEMPT /* FIXME */
+#define __frame \
+ ({ \
+ struct pt_regs *f; \
+ preempt_disable(); \
+ f = ___frame[CPUID]; \
+ preempt_enable(); \
+ f; \
+ })
+#else
+#define __frame ___frame[CPUID]
#endif
+
+#endif /* __ASSEMBLY__ */
+#else /* CONFIG_SMP */
+#ifndef __ASSEMBLY__
+
+static inline void smp_init_cpus(void) {}
+
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_SMP */
+
+#endif /* _ASM_SMP_H */
diff --git a/arch/mn10300/include/asm/spinlock.h b/arch/mn10300/include/asm/spinlock.h
index 4bf9c8b..9342915 100644
--- a/arch/mn10300/include/asm/spinlock.h
+++ b/arch/mn10300/include/asm/spinlock.h
@@ -11,6 +11,183 @@
#ifndef _ASM_SPINLOCK_H
#define _ASM_SPINLOCK_H
-#error SMP spinlocks not implemented for MN10300
+#include <asm/atomic.h>
+#include <asm/rwlock.h>
+#include <asm/page.h>
+/*
+ * Simple spin lock operations. There are two variants, one clears IRQ's
+ * on the local processor, one does not.
+ *
+ * We make no fairness assumptions. They have a cost.
+ */
+
+#define arch_spin_is_locked(x) (*(volatile signed char *)(&(x)->slock) != 0)
+#define arch_spin_unlock_wait(x) do { barrier(); } while (arch_spin_is_locked(x))
+
+static inline void arch_spin_unlock(arch_spinlock_t *lock)
+{
+ asm volatile(
+ " bclr 1,(0,%0) \n"
+ :
+ : "a"(&lock->slock)
+ : "memory", "cc");
+}
+
+static inline int arch_spin_trylock(arch_spinlock_t *lock)
+{
+ int ret;
+
+ asm volatile(
+ " mov 1,%0 \n"
+ " bset %0,(%1) \n"
+ " bne 1f \n"
+ " clr %0 \n"
+ "1: xor 1,%0 \n"
+ : "=d"(ret)
+ : "a"(&lock->slock)
+ : "memory", "cc");
+
+ return ret;
+}
+
+static inline void arch_spin_lock(arch_spinlock_t *lock)
+{
+ asm volatile(
+ "1: bset 1,(0,%0) \n"
+ " bne 1b \n"
+ :
+ : "a"(&lock->slock)
+ : "memory", "cc");
+}
+
+static inline void arch_spin_lock_flags(arch_spinlock_t *lock,
+ unsigned long flags)
+{
+ int temp;
+
+ asm volatile(
+ "1: bset 1,(0,%2) \n"
+ " beq 3f \n"
+ " mov %1,epsw \n"
+ "2: mov (0,%2),%0 \n"
+ " or %0,%0 \n"
+ " bne 2b \n"
+ " mov %3,%0 \n"
+ " mov %0,epsw \n"
+ " nop \n"
+ " nop \n"
+ " bra 1b\n"
+ "3: \n"
+ : "=&d" (temp)
+ : "d" (flags), "a"(&lock->slock), "i"(EPSW_IE | MN10300_CLI_LEVEL)
+ : "memory", "cc");
+}
+
+#ifdef __KERNEL__
+
+/*
+ * Read-write spinlocks, allowing multiple readers
+ * but only one writer.
+ *
+ * NOTE! it is quite common to have readers in interrupts
+ * but no interrupt writers. For those circumstances we
+ * can "mix" irq-safe locks - any writer needs to get a
+ * irq-safe write-lock, but readers can get non-irqsafe
+ * read-locks.
+ */
+
+/**
+ * read_can_lock - would read_trylock() succeed?
+ * @lock: the rwlock in question.
+ */
+#define arch_read_can_lock(x) ((int)(x)->lock > 0)
+
+/**
+ * write_can_lock - would write_trylock() succeed?
+ * @lock: the rwlock in question.
+ */
+#define arch_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS)
+
+/*
+ * On mn10300, we implement read-write locks as a 32-bit counter
+ * with the high bit (sign) being the "contended" bit.
+ */
+static inline void arch_read_lock(arch_rwlock_t *rw)
+{
+#if 0 //def CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
+ __build_read_lock(rw, "__read_lock_failed");
+#else
+ {
+ atomic_t *count = (atomic_t *)rw;
+ while (atomic_dec_return(count) < 0)
+ atomic_inc(count);
+ }
+#endif
+}
+
+static inline void arch_write_lock(arch_rwlock_t *rw)
+{
+#if 0 //def CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
+ __build_write_lock(rw, "__write_lock_failed");
+#else
+ {
+ atomic_t *count = (atomic_t *)rw;
+ while (!atomic_sub_and_test(RW_LOCK_BIAS, count))
+ atomic_add(RW_LOCK_BIAS, count);
+ }
+#endif
+}
+
+static inline void arch_read_unlock(arch_rwlock_t *rw)
+{
+#if 0 //def CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
+ __build_read_unlock(rw);
+#else
+ {
+ atomic_t *count = (atomic_t *)rw;
+ atomic_inc(count);
+ }
+#endif
+}
+
+static inline void arch_write_unlock(arch_rwlock_t *rw)
+{
+#if 0 //def CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
+ __build_write_unlock(rw);
+#else
+ {
+ atomic_t *count = (atomic_t *)rw;
+ atomic_add(RW_LOCK_BIAS, count);
+ }
+#endif
+}
+
+static inline int arch_read_trylock(arch_rwlock_t *lock)
+{
+ atomic_t *count = (atomic_t *)lock;
+ atomic_dec(count);
+ if (atomic_read(count) >= 0)
+ return 1;
+ atomic_inc(count);
+ return 0;
+}
+
+static inline int arch_write_trylock(arch_rwlock_t *lock)
+{
+ atomic_t *count = (atomic_t *)lock;
+ if (atomic_sub_and_test(RW_LOCK_BIAS, count))
+ return 1;
+ atomic_add(RW_LOCK_BIAS, count);
+ return 0;
+}
+
+#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
+#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
+
+#define _raw_spin_relax(lock) cpu_relax()
+#define _raw_read_relax(lock) cpu_relax()
+#define _raw_write_relax(lock) cpu_relax()
+
+#endif /* __KERNEL__ */
#endif /* _ASM_SPINLOCK_H */
diff --git a/arch/mn10300/include/asm/spinlock_types.h b/arch/mn10300/include/asm/spinlock_types.h
new file mode 100644
index 0000000..653dc51
--- /dev/null
+++ b/arch/mn10300/include/asm/spinlock_types.h
@@ -0,0 +1,20 @@
+#ifndef _ASM_SPINLOCK_TYPES_H
+#define _ASM_SPINLOCK_TYPES_H
+
+#ifndef __LINUX_SPINLOCK_TYPES_H
+# error "please don't include this file directly"
+#endif
+
+typedef struct arch_spinlock {
+ unsigned int slock;
+} arch_spinlock_t;
+
+#define __ARCH_SPIN_LOCK_UNLOCKED { 0 }
+
+typedef struct {
+ unsigned int lock;
+} arch_rwlock_t;
+
+#define __ARCH_RW_LOCK_UNLOCKED { RW_LOCK_BIAS }
+
+#endif /* _ASM_SPINLOCK_TYPES_H */
diff --git a/arch/mn10300/include/asm/system.h b/arch/mn10300/include/asm/system.h
index 7de90bc..8ff3e5a 100644
--- a/arch/mn10300/include/asm/system.h
+++ b/arch/mn10300/include/asm/system.h
@@ -12,6 +12,7 @@
#define _ASM_SYSTEM_H
#include <asm/cpu-regs.h>
+#include <asm/intctl-regs.h>
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
@@ -57,8 +58,6 @@ do { \
#define nop() asm volatile ("nop")
-#endif /* !__ASSEMBLY__ */
-
/*
* Force strict CPU ordering.
* And yes, this is required on UP too when we're talking
@@ -85,17 +84,19 @@ do { \
#define smp_mb() mb()
#define smp_rmb() rmb()
#define smp_wmb() wmb()
-#else
+#define set_mb(var, value) do { xchg(&var, value); } while (0)
+#else /* CONFIG_SMP */
#define smp_mb() barrier()
#define smp_rmb() barrier()
#define smp_wmb() barrier()
-#endif
-
#define set_mb(var, value) do { var = value; mb(); } while (0)
+#endif /* CONFIG_SMP */
+
#define set_wmb(var, value) do { var = value; wmb(); } while (0)
#define read_barrier_depends() do {} while (0)
#define smp_read_barrier_depends() do {} while (0)
+#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_SYSTEM_H */
diff --git a/arch/mn10300/include/asm/timer-regs.h b/arch/mn10300/include/asm/timer-regs.h
index 1d883b7..c634977 100644
--- a/arch/mn10300/include/asm/timer-regs.h
+++ b/arch/mn10300/include/asm/timer-regs.h
@@ -17,21 +17,27 @@
#ifdef __KERNEL__
-/* timer prescalar control */
+/*
+ * Timer prescalar control
+ */
#define TMPSCNT __SYSREG(0xd4003071, u8) /* timer prescaler control */
#define TMPSCNT_ENABLE 0x80 /* timer prescaler enable */
#define TMPSCNT_DISABLE 0x00 /* timer prescaler disable */
-/* 8 bit timers */
+/*
+ * 8-bit timers
+ */
#define TM0MD __SYSREG(0xd4003000, u8) /* timer 0 mode register */
#define TM0MD_SRC 0x07 /* timer source */
#define TM0MD_SRC_IOCLK 0x00 /* - IOCLK */
#define TM0MD_SRC_IOCLK_8 0x01 /* - 1/8 IOCLK */
#define TM0MD_SRC_IOCLK_32 0x02 /* - 1/32 IOCLK */
-#define TM0MD_SRC_TM2IO 0x03 /* - TM2IO pin input */
#define TM0MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM0MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
+#define TM0MD_SRC_TM2IO 0x03 /* - TM2IO pin input */
#define TM0MD_SRC_TM0IO 0x07 /* - TM0IO pin input */
+#endif /* CONFIG_AM33_2 */
#define TM0MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM0MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -43,7 +49,9 @@
#define TM1MD_SRC_TM0CASCADE 0x03 /* - cascade with timer 0 */
#define TM1MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM1MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM1MD_SRC_TM1IO 0x07 /* - TM1IO pin input */
+#endif /* CONFIG_AM33_2 */
#define TM1MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM1MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -55,7 +63,9 @@
#define TM2MD_SRC_TM1CASCADE 0x03 /* - cascade with timer 1 */
#define TM2MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM2MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
+#if defined(CONFIG_AM33_2)
#define TM2MD_SRC_TM2IO 0x07 /* - TM2IO pin input */
+#endif /* CONFIG_AM33_2 */
#define TM2MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM2MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -64,11 +74,13 @@
#define TM3MD_SRC_IOCLK 0x00 /* - IOCLK */
#define TM3MD_SRC_IOCLK_8 0x01 /* - 1/8 IOCLK */
#define TM3MD_SRC_IOCLK_32 0x02 /* - 1/32 IOCLK */
-#define TM3MD_SRC_TM1CASCADE 0x03 /* - cascade with timer 2 */
+#define TM3MD_SRC_TM2CASCADE 0x03 /* - cascade with timer 2 */
#define TM3MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM3MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM3MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM3MD_SRC_TM3IO 0x07 /* - TM3IO pin input */
+#endif /* CONFIG_AM33_2 */
#define TM3MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM3MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -96,7 +108,9 @@
#define TM2ICR GxICR(TM2IRQ) /* timer 2 uflow intr ctrl reg */
#define TM3ICR GxICR(TM3IRQ) /* timer 3 uflow intr ctrl reg */
-/* 16-bit timers 4,5 & 7-11 */
+/*
+ * 16-bit timers 4,5 & 7-15
+ */
#define TM4MD __SYSREG(0xd4003080, u8) /* timer 4 mode register */
#define TM4MD_SRC 0x07 /* timer source */
#define TM4MD_SRC_IOCLK 0x00 /* - IOCLK */
@@ -105,7 +119,9 @@
#define TM4MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM4MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM4MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM4MD_SRC_TM4IO 0x07 /* - TM4IO pin input */
+#endif /* CONFIG_AM33_2 */
#define TM4MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM4MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -118,7 +134,11 @@
#define TM5MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM5MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM5MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM5MD_SRC_TM5IO 0x07 /* - TM5IO pin input */
+#else /* !CONFIG_AM33_2 */
+#define TM5MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#endif /* CONFIG_AM33_2 */
#define TM5MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM5MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -130,7 +150,9 @@
#define TM7MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM7MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM7MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM7MD_SRC_TM7IO 0x07 /* - TM7IO pin input */
+#endif /* CONFIG_AM33_2 */
#define TM7MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM7MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -143,7 +165,11 @@
#define TM8MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM8MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM8MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM8MD_SRC_TM8IO 0x07 /* - TM8IO pin input */
+#else /* !CONFIG_AM33_2 */
+#define TM8MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#endif /* CONFIG_AM33_2 */
#define TM8MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM8MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -156,7 +182,11 @@
#define TM9MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM9MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM9MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM9MD_SRC_TM9IO 0x07 /* - TM9IO pin input */
+#else /* !CONFIG_AM33_2 */
+#define TM9MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#endif /* CONFIG_AM33_2 */
#define TM9MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM9MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -169,7 +199,11 @@
#define TM10MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM10MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM10MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM10MD_SRC_TM10IO 0x07 /* - TM10IO pin input */
+#else /* !CONFIG_AM33_2 */
+#define TM10MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#endif /* CONFIG_AM33_2 */
#define TM10MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM10MD_COUNT_ENABLE 0x80 /* timer count enable */
@@ -178,32 +212,101 @@
#define TM11MD_SRC_IOCLK 0x00 /* - IOCLK */
#define TM11MD_SRC_IOCLK_8 0x01 /* - 1/8 IOCLK */
#define TM11MD_SRC_IOCLK_32 0x02 /* - 1/32 IOCLK */
-#define TM11MD_SRC_TM7CASCADE 0x03 /* - cascade with timer 7 */
#define TM11MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
#define TM11MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
#define TM11MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
#define TM11MD_SRC_TM11IO 0x07 /* - TM11IO pin input */
+#else /* !CONFIG_AM33_2 */
+#define TM11MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#endif /* CONFIG_AM33_2 */
#define TM11MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
#define TM11MD_COUNT_ENABLE 0x80 /* timer count enable */
+#if defined(CONFIG_AM34_2)
+#define TM12MD __SYSREG(0xd4003180, u8) /* timer 11 mode register */
+#define TM12MD_SRC 0x07 /* timer source */
+#define TM12MD_SRC_IOCLK 0x00 /* - IOCLK */
+#define TM12MD_SRC_IOCLK_8 0x01 /* - 1/8 IOCLK */
+#define TM12MD_SRC_IOCLK_32 0x02 /* - 1/32 IOCLK */
+#define TM12MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
+#define TM12MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
+#define TM12MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#define TM12MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#define TM12MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
+#define TM12MD_COUNT_ENABLE 0x80 /* timer count enable */
+
+#define TM13MD __SYSREG(0xd4003182, u8) /* timer 11 mode register */
+#define TM13MD_SRC 0x07 /* timer source */
+#define TM13MD_SRC_IOCLK 0x00 /* - IOCLK */
+#define TM13MD_SRC_IOCLK_8 0x01 /* - 1/8 IOCLK */
+#define TM13MD_SRC_IOCLK_32 0x02 /* - 1/32 IOCLK */
+#define TM13MD_SRC_TM12CASCADE 0x03 /* - cascade with timer 12 */
+#define TM13MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
+#define TM13MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
+#define TM13MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#define TM13MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#define TM13MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
+#define TM13MD_COUNT_ENABLE 0x80 /* timer count enable */
+
+#define TM14MD __SYSREG(0xd4003184, u8) /* timer 11 mode register */
+#define TM14MD_SRC 0x07 /* timer source */
+#define TM14MD_SRC_IOCLK 0x00 /* - IOCLK */
+#define TM14MD_SRC_IOCLK_8 0x01 /* - 1/8 IOCLK */
+#define TM14MD_SRC_IOCLK_32 0x02 /* - 1/32 IOCLK */
+#define TM14MD_SRC_TM13CASCADE 0x03 /* - cascade with timer 13 */
+#define TM14MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
+#define TM14MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
+#define TM14MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#define TM14MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#define TM14MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
+#define TM14MD_COUNT_ENABLE 0x80 /* timer count enable */
+
+#define TM15MD __SYSREG(0xd4003186, u8) /* timer 11 mode register */
+#define TM15MD_SRC 0x07 /* timer source */
+#define TM15MD_SRC_IOCLK 0x00 /* - IOCLK */
+#define TM15MD_SRC_IOCLK_8 0x01 /* - 1/8 IOCLK */
+#define TM15MD_SRC_IOCLK_32 0x02 /* - 1/32 IOCLK */
+#define TM15MD_SRC_TM0UFLOW 0x04 /* - timer 0 underflow */
+#define TM15MD_SRC_TM1UFLOW 0x05 /* - timer 1 underflow */
+#define TM15MD_SRC_TM2UFLOW 0x06 /* - timer 2 underflow */
+#define TM15MD_SRC_TM7UFLOW 0x07 /* - timer 7 underflow */
+#define TM15MD_INIT_COUNTER 0x40 /* initialize TMnBC = TMnBR */
+#define TM15MD_COUNT_ENABLE 0x80 /* timer count enable */
+#endif /* CONFIG_AM34_2 */
+
+
#define TM4BR __SYSREG(0xd4003090, u16) /* timer 4 base register */
#define TM5BR __SYSREG(0xd4003092, u16) /* timer 5 base register */
+#define TM45BR __SYSREG(0xd4003090, u32) /* timer 4:5 base register */
#define TM7BR __SYSREG(0xd4003096, u16) /* timer 7 base register */
#define TM8BR __SYSREG(0xd4003098, u16) /* timer 8 base register */
#define TM9BR __SYSREG(0xd400309a, u16) /* timer 9 base register */
+#define TM89BR __SYSREG(0xd4003098, u32) /* timer 8:9 base register */
#define TM10BR __SYSREG(0xd400309c, u16) /* timer 10 base register */
#define TM11BR __SYSREG(0xd400309e, u16) /* timer 11 base register */
-#define TM45BR __SYSREG(0xd4003090, u32) /* timer 4:5 base register */
+#if defined(CONFIG_AM34_2)
+#define TM12BR __SYSREG(0xd4003190, u16) /* timer 12 base register */
+#define TM13BR __SYSREG(0xd4003192, u16) /* timer 13 base register */
+#define TM14BR __SYSREG(0xd4003194, u16) /* timer 14 base register */
+#define TM15BR __SYSREG(0xd4003196, u16) /* timer 15 base register */
+#endif /* CONFIG_AM34_2 */
#define TM4BC __SYSREG(0xd40030a0, u16) /* timer 4 binary counter */
#define TM5BC __SYSREG(0xd40030a2, u16) /* timer 5 binary counter */
#define TM45BC __SYSREG(0xd40030a0, u32) /* timer 4:5 binary counter */
-
#define TM7BC __SYSREG(0xd40030a6, u16) /* timer 7 binary counter */
#define TM8BC __SYSREG(0xd40030a8, u16) /* timer 8 binary counter */
#define TM9BC __SYSREG(0xd40030aa, u16) /* timer 9 binary counter */
+#define TM89BC __SYSREG(0xd40030a8, u32) /* timer 8:9 binary counter */
#define TM10BC __SYSREG(0xd40030ac, u16) /* timer 10 binary counter */
#define TM11BC __SYSREG(0xd40030ae, u16) /* timer 11 binary counter */
+#if defined(CONFIG_AM34_2)
+#define TM12BC __SYSREG(0xd40031a0, u16) /* timer 12 binary counter */
+#define TM13BC __SYSREG(0xd40031a2, u16) /* timer 13 binary counter */
+#define TM14BC __SYSREG(0xd40031a4, u16) /* timer 14 binary counter */
+#define TM15BC __SYSREG(0xd40031a6, u16) /* timer 15 binary counter */
+#endif /* CONFIG_AM34_2 */
#define TM4IRQ 6 /* timer 4 IRQ */
#define TM5IRQ 7 /* timer 5 IRQ */
@@ -212,6 +315,12 @@
#define TM9IRQ 13 /* timer 9 IRQ */
#define TM10IRQ 14 /* timer 10 IRQ */
#define TM11IRQ 15 /* timer 11 IRQ */
+#if defined(CONFIG_AM34_2)
+#define TM12IRQ 64 /* timer 12 IRQ */
+#define TM13IRQ 65 /* timer 13 IRQ */
+#define TM14IRQ 66 /* timer 14 IRQ */
+#define TM15IRQ 67 /* timer 15 IRQ */
+#endif /* CONFIG_AM34_2 */
#define TM4ICR GxICR(TM4IRQ) /* timer 4 uflow intr ctrl reg */
#define TM5ICR GxICR(TM5IRQ) /* timer 5 uflow intr ctrl reg */
@@ -220,8 +329,16 @@
#define TM9ICR GxICR(TM9IRQ) /* timer 9 uflow intr ctrl reg */
#define TM10ICR GxICR(TM10IRQ) /* timer 10 uflow intr ctrl reg */
#define TM11ICR GxICR(TM11IRQ) /* timer 11 uflow intr ctrl reg */
-
-/* 16-bit timer 6 */
+#if defined(CONFIG_AM34_2)
+#define TM12ICR GxICR(TM12IRQ) /* timer 12 uflow intr ctrl reg */
+#define TM13ICR GxICR(TM13IRQ) /* timer 13 uflow intr ctrl reg */
+#define TM14ICR GxICR(TM14IRQ) /* timer 14 uflow intr ctrl reg */
+#define TM15ICR GxICR(TM15IRQ) /* timer 15 uflow intr ctrl reg */
+#endif /* CONFIG_AM34_2 */
+
+/*
+ * 16-bit timer 6
+ */
#define TM6MD __SYSREG(0xd4003084, u16) /* timer6 mode register */
#define TM6MD_SRC 0x0007 /* timer source */
#define TM6MD_SRC_IOCLK 0x0000 /* - IOCLK */
@@ -229,10 +346,14 @@
#define TM6MD_SRC_IOCLK_32 0x0002 /* - 1/32 IOCLK */
#define TM6MD_SRC_TM0UFLOW 0x0004 /* - timer 0 underflow */
#define TM6MD_SRC_TM1UFLOW 0x0005 /* - timer 1 underflow */
-#define TM6MD_SRC_TM6IOB_BOTH 0x0006 /* - TM6IOB pin input (both edges) */
+#define TM6MD_SRC_TM2UFLOW 0x0006 /* - timer 2 underflow */
+#if defined(CONFIG_AM33_2)
+/* #define TM6MD_SRC_TM6IOB_BOTH 0x0006 */ /* - TM6IOB pin input (both edges) */
#define TM6MD_SRC_TM6IOB_SINGLE 0x0007 /* - TM6IOB pin input (single edge) */
-#define TM6MD_CLR_ENABLE 0x0010 /* clear count enable */
+#endif /* CONFIG_AM33_2 */
#define TM6MD_ONESHOT_ENABLE 0x0040 /* oneshot count */
+#define TM6MD_CLR_ENABLE 0x0010 /* clear count enable */
+#if defined(CONFIG_AM33_2)
#define TM6MD_TRIG_ENABLE 0x0080 /* TM6IOB pin trigger enable */
#define TM6MD_PWM 0x3800 /* PWM output mode */
#define TM6MD_PWM_DIS 0x0000 /* - disabled */
@@ -240,10 +361,15 @@
#define TM6MD_PWM_11BIT 0x1800 /* - 11 bits mode */
#define TM6MD_PWM_12BIT 0x3000 /* - 12 bits mode */
#define TM6MD_PWM_14BIT 0x3800 /* - 14 bits mode */
+#endif /* CONFIG_AM33_2 */
+
#define TM6MD_INIT_COUNTER 0x4000 /* initialize TMnBC to zero */
#define TM6MD_COUNT_ENABLE 0x8000 /* timer count enable */
#define TM6MDA __SYSREG(0xd40030b4, u8) /* timer6 cmp/cap A mode reg */
+#define TM6MDA_MODE_CMP_SINGLE 0x00 /* - compare, single buffer mode */
+#define TM6MDA_MODE_CMP_DOUBLE 0x40 /* - compare, double buffer mode */
+#if defined(CONFIG_AM33_2)
#define TM6MDA_OUT 0x07 /* output select */
#define TM6MDA_OUT_SETA_RESETB 0x00 /* - set at match A, reset at match B */
#define TM6MDA_OUT_SETA_RESETOV 0x01 /* - set at match A, reset at overflow */
@@ -251,30 +377,35 @@
#define TM6MDA_OUT_RESETA 0x03 /* - reset at match A */
#define TM6MDA_OUT_TOGGLE 0x04 /* - toggle on match A */
#define TM6MDA_MODE 0xc0 /* compare A register mode */
-#define TM6MDA_MODE_CMP_SINGLE 0x00 /* - compare, single buffer mode */
-#define TM6MDA_MODE_CMP_DOUBLE 0x40 /* - compare, double buffer mode */
#define TM6MDA_MODE_CAP_S_EDGE 0x80 /* - capture, single edge mode */
#define TM6MDA_MODE_CAP_D_EDGE 0xc0 /* - capture, double edge mode */
#define TM6MDA_EDGE 0x20 /* compare A edge select */
#define TM6MDA_EDGE_FALLING 0x00 /* capture on falling edge */
#define TM6MDA_EDGE_RISING 0x20 /* capture on rising edge */
#define TM6MDA_CAPTURE_ENABLE 0x10 /* capture enable */
+#else /* !CONFIG_AM33_2 */
+#define TM6MDA_MODE 0x40 /* compare A register mode */
+#endif /* CONFIG_AM33_2 */
#define TM6MDB __SYSREG(0xd40030b5, u8) /* timer6 cmp/cap B mode reg */
+#define TM6MDB_MODE_CMP_SINGLE 0x00 /* - compare, single buffer mode */
+#define TM6MDB_MODE_CMP_DOUBLE 0x40 /* - compare, double buffer mode */
+#if defined(CONFIG_AM33_2)
#define TM6MDB_OUT 0x07 /* output select */
#define TM6MDB_OUT_SETB_RESETA 0x00 /* - set at match B, reset at match A */
#define TM6MDB_OUT_SETB_RESETOV 0x01 /* - set at match B */
#define TM6MDB_OUT_RESETB 0x03 /* - reset at match B */
#define TM6MDB_OUT_TOGGLE 0x04 /* - toggle on match B */
#define TM6MDB_MODE 0xc0 /* compare B register mode */
-#define TM6MDB_MODE_CMP_SINGLE 0x00 /* - compare, single buffer mode */
-#define TM6MDB_MODE_CMP_DOUBLE 0x40 /* - compare, double buffer mode */
#define TM6MDB_MODE_CAP_S_EDGE 0x80 /* - capture, single edge mode */
#define TM6MDB_MODE_CAP_D_EDGE 0xc0 /* - capture, double edge mode */
#define TM6MDB_EDGE 0x20 /* compare B edge select */
#define TM6MDB_EDGE_FALLING 0x00 /* capture on falling edge */
#define TM6MDB_EDGE_RISING 0x20 /* capture on rising edge */
#define TM6MDB_CAPTURE_ENABLE 0x10 /* capture enable */
+#else /* !CONFIG_AM33_2 */
+#define TM6MDB_MODE 0x40 /* compare B register mode */
+#endif /* CONFIG_AM33_2 */
#define TM6CA __SYSREG(0xd40030c4, u16) /* timer6 cmp/capture reg A */
#define TM6CB __SYSREG(0xd40030d4, u16) /* timer6 cmp/capture reg B */
@@ -288,6 +419,34 @@
#define TM6AICR GxICR(TM6AIRQ) /* timer 6A intr control reg */
#define TM6BICR GxICR(TM6BIRQ) /* timer 6B intr control reg */
+#if defined(CONFIG_AM34_2)
+/*
+ * MTM: OS Tick-Timer
+ */
+#define TMTMD __SYSREG(0xd4004100, u8) /* Tick Timer mode register */
+#define TMTMD_TMTLDE 0x40 /* initialize TMTBC = TMTBR */
+#define TMTMD_TMTCNE 0x80 /* timer count enable */
+
+#define TMTBR __SYSREG(0xd4004110, u32) /* Tick Timer mode reg */
+#define TMTBC __SYSREG(0xd4004120, u32) /* Tick Timer mode reg */
+
+/*
+ * MTM: OS Timestamp-Timer
+ */
+#define TMSMD __SYSREG(0xd4004140, u8) /* Tick Timer mode register */
+#define TMSMD_TMSLDE 0x40 /* initialize TMSBC = TMSBR */
+#define TMSMD_TMSCNE 0x80 /* timer count enable */
+
+#define TMSBR __SYSREG(0xd4004150, u32) /* Tick Timer mode register */
+#define TMSBC __SYSREG(0xd4004160, u32) /* Tick Timer mode register */
+
+#define TMTIRQ 119 /* OS Tick timer IRQ */
+#define TMSIRQ 120 /* Timestamp timer IRQ */
+
+#define TMTICR GxICR(TMTIRQ) /* OS Tick timer uflow intr ctrl reg */
+#define TMSICR GxICR(TMSIRQ) /* Timestamp timer uflow intr ctrl reg */
+#endif /* CONFIG_AM34_2 */
+
#endif /* __KERNEL__ */
#endif /* _ASM_TIMER_REGS_H */
diff --git a/arch/mn10300/include/asm/timex.h b/arch/mn10300/include/asm/timex.h
index 8d031f9..ce5719a 100644
--- a/arch/mn10300/include/asm/timex.h
+++ b/arch/mn10300/include/asm/timex.h
@@ -16,8 +16,7 @@
#define TICK_SIZE (tick_nsec / 1000)
-#define CLOCK_TICK_RATE 1193180 /* Underlying HZ - this should probably be set
- * to something appropriate, but what? */
+#define CLOCK_TICK_RATE MN10300_JCCLK /* Underlying HZ */
extern cycles_t cacheflush_time;
diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h
index 197a7af..47e7951 100644
--- a/arch/mn10300/include/asm/uaccess.h
+++ b/arch/mn10300/include/asm/uaccess.h
@@ -377,7 +377,7 @@ unsigned long __generic_copy_to_user_nocheck(void *to, const void *from,
#if 0
-#error don't use - these macros don't increment to & from pointers
+#error "don't use - these macros don't increment to & from pointers"
/* Optimize just a little bit when we know the size of the move. */
#define __constant_copy_user(to, from, size) \
do { \
diff --git a/arch/mn10300/kernel/Makefile b/arch/mn10300/kernel/Makefile
index 9902235..5b41192 100644
--- a/arch/mn10300/kernel/Makefile
+++ b/arch/mn10300/kernel/Makefile
@@ -10,8 +10,9 @@ obj-y := process.o signal.o entry.o traps.o irq.o \
ptrace.o setup.o time.o sys_mn10300.o io.o kthread.o \
switch_to.o mn10300_ksyms.o kernel_execve.o $(fpu-obj-y)
-obj-$(CONFIG_MN10300_WD_TIMER) += mn10300-watchdog.o mn10300-watchdog-low.o
+obj-$(CONFIG_SMP) += smp.o smp-low.o
+obj-$(CONFIG_MN10300_WD_TIMER) += mn10300-watchdog.o mn10300-watchdog-low.o
obj-$(CONFIG_MN10300_TTYSM) += mn10300-serial.o mn10300-serial-low.o \
mn10300-debug.o
diff --git a/arch/mn10300/kernel/asm-offsets.c b/arch/mn10300/kernel/asm-offsets.c
index 78e290e..54cc5b6 100644
--- a/arch/mn10300/kernel/asm-offsets.c
+++ b/arch/mn10300/kernel/asm-offsets.c
@@ -66,7 +66,7 @@ void foo(void)
OFFSET(THREAD_SP, thread_struct, sp);
OFFSET(THREAD_A3, thread_struct, a3);
OFFSET(THREAD_USP, thread_struct, usp);
- OFFSET(THREAD_FRAME, thread_struct, __frame);
+ OFFSET(THREAD_FRAME, thread_struct, frame);
#ifdef CONFIG_FPU
OFFSET(THREAD_FPU_FLAGS, thread_struct, fpu_flags);
OFFSET(THREAD_FPU_STATE, thread_struct, fpu_state);
diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S
index 355f681..f00b9ba 100644
--- a/arch/mn10300/kernel/entry.S
+++ b/arch/mn10300/kernel/entry.S
@@ -28,25 +28,17 @@
#include <asm/asm-offsets.h>
#include <asm/frame.inc>
+#if defined(CONFIG_SMP) && defined(CONFIG_GDBSTUB)
+#include <asm/gdb-stub.h>
+#endif /* CONFIG_SMP && CONFIG_GDBSTUB */
+
#ifdef CONFIG_PREEMPT
-#define preempt_stop __cli
+#define preempt_stop LOCAL_IRQ_DISABLE
#else
#define preempt_stop
#define resume_kernel restore_all
#endif
- .macro __cli
- and ~EPSW_IM,epsw
- or EPSW_IE|MN10300_CLI_LEVEL,epsw
- nop
- nop
- nop
- .endm
- .macro __sti
- or EPSW_IE|EPSW_IM_7,epsw
- .endm
-
-
.am33_2
###############################################################################
@@ -88,7 +80,7 @@ syscall_call:
syscall_exit:
# make sure we don't miss an interrupt setting need_resched or
# sigpending between sampling and the rti
- __cli
+ LOCAL_IRQ_DISABLE
mov (TI_flags,a2),d2
btst _TIF_ALLWORK_MASK,d2
bne syscall_exit_work
@@ -105,7 +97,7 @@ restore_all:
syscall_exit_work:
btst _TIF_SYSCALL_TRACE,d2
beq work_pending
- __sti # could let syscall_trace_exit() call
+ LOCAL_IRQ_ENABLE # could let syscall_trace_exit() call
# schedule() instead
mov fp,d0
call syscall_trace_exit[],0 # do_syscall_trace(regs)
@@ -121,7 +113,7 @@ work_resched:
# make sure we don't miss an interrupt setting need_resched or
# sigpending between sampling and the rti
- __cli
+ LOCAL_IRQ_DISABLE
# is there any work to be done other than syscall tracing?
mov (TI_flags,a2),d2
@@ -168,7 +160,7 @@ ret_from_intr:
ENTRY(resume_userspace)
# make sure we don't miss an interrupt setting need_resched or
# sigpending between sampling and the rti
- __cli
+ LOCAL_IRQ_DISABLE
# is there any work to be done on int/exception return?
mov (TI_flags,a2),d2
@@ -178,7 +170,7 @@ ENTRY(resume_userspace)
#ifdef CONFIG_PREEMPT
ENTRY(resume_kernel)
- __cli
+ LOCAL_IRQ_DISABLE
mov (TI_preempt_count,a2),d0 # non-zero preempt_count ?
cmp 0,d0
bne restore_all
@@ -281,6 +273,79 @@ ENTRY(nmi_handler)
add -4,sp
mov d0,(sp)
mov (TBR),d0
+
+#ifdef CONFIG_SMP
+ add -4,sp
+ mov d0,(sp) # save d0(TBR)
+ movhu (NMIAGR),d0
+ and NMIAGR_GN,d0
+ lsr 0x2,d0
+ cmp CALL_FUNCTION_NMI_IPI,d0
+ bne 5f # if not call function, jump
+
+ # function call nmi ipi
+ add 4,sp # no need to store TBR
+ mov GxICR_DETECT,d0 # clear NMI request
+ movbu d0,(GxICR(CALL_FUNCTION_NMI_IPI))
+ movhu (GxICR(CALL_FUNCTION_NMI_IPI)),d0
+ and ~EPSW_NMID,epsw # enable NMI
+
+ mov (sp),d0 # restore d0
+ SAVE_ALL
+ call smp_nmi_call_function_interrupt[],0
+ RESTORE_ALL
+
+5:
+#ifdef CONFIG_GDBSTUB
+ cmp GDB_NMI_IPI,d0
+ bne 3f # if not gdb nmi ipi, jump
+
+ # gdb nmi ipi
+ add 4,sp # no need to store TBR
+ mov GxICR_DETECT,d0 # clear NMI
+ movbu d0,(GxICR(GDB_NMI_IPI))
+ movhu (GxICR(GDB_NMI_IPI)),d0
+ and ~EPSW_NMID,epsw # enable NMI
+#ifdef CONFIG_MN10300_CACHE_ENABLED
+ mov (gdbstub_nmi_opr_type),d0
+ cmp GDBSTUB_NMI_CACHE_PURGE,d0
+ bne 4f # if not gdb cache purge, jump
+
+ # gdb cache purge nmi ipi
+ add -20,sp
+ mov d1,(4,sp)
+ mov a0,(8,sp)
+ mov a1,(12,sp)
+ mov mdr,d0
+ mov d0,(16,sp)
+ call gdbstub_local_purge_cache[],0
+ mov 0x1,d0
+ mov (CPUID),d1
+ asl d1,d0
+ mov gdbstub_nmi_cpumask,a0
+ bclr d0,(a0)
+ mov (4,sp),d1
+ mov (8,sp),a0
+ mov (12,sp),a1
+ mov (16,sp),d0
+ mov d0,mdr
+ add 20,sp
+ mov (sp),d0
+ add 4,sp
+ rti
+4:
+#endif /* CONFIG_MN10300_CACHE_ENABLED */
+ # gdb wait nmi ipi
+ mov (sp),d0
+ SAVE_ALL
+ call gdbstub_nmi_wait[],0
+ RESTORE_ALL
+3:
+#endif /* CONFIG_GDBSTUB */
+ mov (sp),d0 # restore TBR to d0
+ add 4,sp
+#endif /* CONFIG_SMP */
+
bra __common_exception_nonmi
ENTRY(__common_exception)
@@ -314,15 +379,21 @@ __common_exception_nonmi:
mov d0,(REG_ORIG_D0,fp)
#ifdef CONFIG_GDBSTUB
+#ifdef CONFIG_SMP
+ call gdbstub_busy_check[],0
+ and d0,d0 # check return value
+ beq 2f
+#else /* CONFIG_SMP */
btst 0x01,(gdbstub_busy)
beq 2f
+#endif /* CONFIG_SMP */
and ~EPSW_IE,epsw
mov fp,d0
mov a2,d1
call gdbstub_exception[],0 # gdbstub itself caused an exception
bra restore_all
2:
-#endif
+#endif /* CONFIG_GDBSTUB */
mov fp,d0 # arg 0: stacked register file
mov a2,d1 # arg 1: exception number
@@ -357,11 +428,7 @@ ENTRY(set_excp_vector)
add exception_table,d0
mov d1,(d0)
mov 4,d1
-#if defined(CONFIG_MN10300_CACHE_WBACK)
- jmp mn10300_dcache_flush_inv_range2
-#else
ret [],0
-#endif
###############################################################################
#
diff --git a/arch/mn10300/kernel/gdb-io-serial-low.S b/arch/mn10300/kernel/gdb-io-serial-low.S
index 4998b24..b1d0152 100644
--- a/arch/mn10300/kernel/gdb-io-serial-low.S
+++ b/arch/mn10300/kernel/gdb-io-serial-low.S
@@ -18,6 +18,7 @@
#include <asm/thread_info.h>
#include <asm/frame.inc>
#include <asm/intctl-regs.h>
+#include <asm/irqflags.h>
#include <unit/serial.h>
.text
@@ -69,7 +70,7 @@ gdbstub_io_rx_overflow:
bra gdbstub_io_rx_done
gdbstub_io_rx_enter:
- or EPSW_IE|EPSW_IM_1,epsw
+ LOCAL_CHANGE_INTR_MASK_LEVEL(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL+1))
add -4,sp
SAVE_ALL
@@ -80,7 +81,7 @@ gdbstub_io_rx_enter:
mov fp,d0
call gdbstub_rx_irq[],0 # gdbstub_rx_irq(regs,excep)
- and ~EPSW_IE,epsw
+ LOCAL_CLI
bclr 0x01,(gdbstub_busy)
.globl gdbstub_return
diff --git a/arch/mn10300/kernel/gdb-io-serial.c b/arch/mn10300/kernel/gdb-io-serial.c
index ae663dc..0d5d63c 100644
--- a/arch/mn10300/kernel/gdb-io-serial.c
+++ b/arch/mn10300/kernel/gdb-io-serial.c
@@ -23,6 +23,7 @@
#include <asm/exceptions.h>
#include <asm/serial-regs.h>
#include <unit/serial.h>
+#include <asm/smp.h>
/*
* initialise the GDB stub
@@ -45,22 +46,34 @@ void gdbstub_io_init(void)
XIRQxICR(GDBPORT_SERIAL_IRQ) = 0;
tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
+#if CONFIG_GDBSTUB_IRQ_LEVEL == 0
IVAR0 = EXCEP_IRQ_LEVEL0;
- set_intr_stub(EXCEP_IRQ_LEVEL0, gdbstub_io_rx_handler);
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 1
+ IVAR1 = EXCEP_IRQ_LEVEL1;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 2
+ IVAR2 = EXCEP_IRQ_LEVEL2;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 3
+ IVAR3 = EXCEP_IRQ_LEVEL3;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 4
+ IVAR4 = EXCEP_IRQ_LEVEL4;
+#elif CONFIG_GDBSTUB_IRQ_LEVEL == 5
+ IVAR5 = EXCEP_IRQ_LEVEL5;
+#else
+#error "Unknown irq level for gdbstub."
+#endif
+
+ set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL),
+ gdbstub_io_rx_handler);
XIRQxICR(GDBPORT_SERIAL_IRQ) &= ~GxICR_REQUEST;
- XIRQxICR(GDBPORT_SERIAL_IRQ) = GxICR_ENABLE | GxICR_LEVEL_0;
+ XIRQxICR(GDBPORT_SERIAL_IRQ) =
+ GxICR_ENABLE | NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL);
tmp = XIRQxICR(GDBPORT_SERIAL_IRQ);
GDBPORT_SERIAL_IER = UART_IER_RDI | UART_IER_RLSI;
/* permit level 0 IRQs to take place */
- asm volatile(
- " and %0,epsw \n"
- " or %1,epsw \n"
- :
- : "i"(~EPSW_IM), "i"(EPSW_IE | EPSW_IM_1)
- );
+ local_change_intr_mask_level(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1));
}
/*
@@ -87,6 +100,9 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
{
unsigned ix;
u8 ch, st;
+#if defined(CONFIG_MN10300_WD_TIMER)
+ int cpu;
+#endif
*_ch = 0xff;
@@ -104,8 +120,9 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
if (nonblock)
return -EAGAIN;
#ifdef CONFIG_MN10300_WD_TIMER
- watchdog_alert_counter = 0;
-#endif /* CONFIG_MN10300_WD_TIMER */
+ for (cpu = 0; cpu < NR_CPUS; cpu++)
+ watchdog_alert_counter[cpu] = 0;
+#endif
goto try_again;
}
diff --git a/arch/mn10300/kernel/gdb-io-ttysm.c b/arch/mn10300/kernel/gdb-io-ttysm.c
index a560bbc..97dfda2 100644
--- a/arch/mn10300/kernel/gdb-io-ttysm.c
+++ b/arch/mn10300/kernel/gdb-io-ttysm.c
@@ -58,9 +58,12 @@ void __init gdbstub_io_init(void)
gdbstub_io_set_baud(115200);
/* we want to get serial receive interrupts */
- set_intr_level(gdbstub_port->rx_irq, GxICR_LEVEL_0);
- set_intr_level(gdbstub_port->tx_irq, GxICR_LEVEL_0);
- set_intr_stub(EXCEP_IRQ_LEVEL0, gdbstub_io_rx_handler);
+ set_intr_level(gdbstub_port->rx_irq,
+ NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL));
+ set_intr_level(gdbstub_port->tx_irq,
+ NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL));
+ set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL),
+ gdbstub_io_rx_handler);
*gdbstub_port->rx_icr |= GxICR_ENABLE;
tmp = *gdbstub_port->rx_icr;
@@ -84,12 +87,7 @@ void __init gdbstub_io_init(void)
tmp = *gdbstub_port->_control;
/* permit level 0 IRQs only */
- asm volatile(
- " and %0,epsw \n"
- " or %1,epsw \n"
- :
- : "i"(~EPSW_IM), "i"(EPSW_IE|EPSW_IM_1)
- );
+ local_change_intr_mask_level(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1));
}
/*
@@ -184,6 +182,9 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock)
{
unsigned ix;
u8 ch, st;
+#if defined(CONFIG_MN10300_WD_TIMER)
+ int cpu;
+#endif
*_ch = 0xff;
@@ -201,8 +202,9 @@ try_again:
if (nonblock)
return -EAGAIN;
#ifdef CONFIG_MN10300_WD_TIMER
- watchdog_alert_counter = 0;
-#endif /* CONFIG_MN10300_WD_TIMER */
+ for (cpu = 0; cpu < NR_CPUS; cpu++)
+ watchdog_alert_counter[cpu] = 0;
+#endif
goto try_again;
}
diff --git a/arch/mn10300/kernel/gdb-stub.c b/arch/mn10300/kernel/gdb-stub.c
index 41b1170..a5fc3f0 100644
--- a/arch/mn10300/kernel/gdb-stub.c
+++ b/arch/mn10300/kernel/gdb-stub.c
@@ -440,15 +440,11 @@ static const unsigned char gdbstub_insn_sizes[256] =
static int __gdbstub_mark_bp(u8 *addr, int ix)
{
- if (addr < (u8 *) 0x70000000UL)
- return 0;
- /* 70000000-7fffffff: vmalloc area */
- if (addr < (u8 *) 0x80000000UL)
+ /* vmalloc area */
+ if (((u8 *) VMALLOC_START <= addr) && (addr < (u8 *) VMALLOC_END))
goto okay;
- if (addr < (u8 *) 0x8c000000UL)
- return 0;
- /* 8c000000-93ffffff: SRAM, SDRAM */
- if (addr < (u8 *) 0x94000000UL)
+ /* SRAM, SDRAM */
+ if (((u8 *) 0x80000000UL <= addr) && (addr < (u8 *) 0xa0000000UL))
goto okay;
return 0;
@@ -1197,9 +1193,8 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep)
mn10300_set_gdbleds(1);
asm volatile("mov mdr,%0" : "=d"(mdr));
- asm volatile("mov epsw,%0" : "=d"(epsw));
- asm volatile("mov %0,epsw"
- :: "d"((epsw & ~EPSW_IM) | EPSW_IE | EPSW_IM_1));
+ local_save_flags(epsw);
+ local_change_intr_mask_level(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1));
gdbstub_store_fpu();
diff --git a/arch/mn10300/kernel/head.S b/arch/mn10300/kernel/head.S
index a81e34f..73e00fc 100644
--- a/arch/mn10300/kernel/head.S
+++ b/arch/mn10300/kernel/head.S
@@ -19,6 +19,12 @@
#include <asm/frame.inc>
#include <asm/param.h>
#include <unit/serial.h>
+#ifdef CONFIG_SMP
+#include <asm/smp.h>
+#include <asm/intctl-regs.h>
+#include <asm/cpu-regs.h>
+#include <proc/smp-regs.h>
+#endif /* CONFIG_SMP */
__HEAD
@@ -30,17 +36,51 @@
.globl _start
.type _start,@function
_start:
+#ifdef CONFIG_SMP
+ #
+ # If this is a secondary CPU (AP), then deal with that elsewhere
+ #
+ mov (CPUID),d3
+ and CPUID_MASK,d3
+ bne startup_secondary
+
+ #
+ # We're dealing with the primary CPU (BP) here, then.
+ # Keep BP's D0,D1,D2 register for boot check.
+ #
+
+ # Set up the Boot IPI for each secondary CPU
+ mov 0x1,a0
+loop_set_secondary_icr:
+ mov a0,a1
+ asl CROSS_ICR_CPU_SHIFT,a1
+ add CROSS_GxICR(SMP_BOOT_IRQ,0),a1
+ movhu (a1),d3
+ or GxICR_ENABLE|GxICR_LEVEL_0,d3
+ movhu d3,(a1)
+ movhu (a1),d3 # flush
+ inc a0
+ cmp NR_CPUS,a0
+ bne loop_set_secondary_icr
+#endif /* CONFIG_SMP */
+
# save commandline pointer
mov d0,a3
# preload the PGD pointer register
mov swapper_pg_dir,d0
mov d0,(PTBR)
+ clr d0
+ movbu d0,(PIDR)
# turn on the TLBs
mov MMUCTR_IIV|MMUCTR_DIV,d0
mov d0,(MMUCTR)
+#ifdef CONFIG_AM34_2
+ mov MMUCTR_ITE|MMUCTR_DTE|MMUCTR_CE|MMUCTR_WTE,d0
+#else
mov MMUCTR_ITE|MMUCTR_DTE|MMUCTR_CE,d0
+#endif
mov d0,(MMUCTR)
# turn on AM33v2 exception handling mode and set the trap table base
@@ -51,6 +91,11 @@ _start:
mov d0,(TBR)
# invalidate and enable both of the caches
+#ifdef CONFIG_SMP
+ mov ECHCTR,a0
+ clr d0
+ mov d0,(a0)
+#endif
mov CHCTR,a0
clr d0
movhu d0,(a0) # turn off first
@@ -206,6 +251,44 @@ __no_parameters:
call processor_init[],0
call unit_init[],0
+#ifdef CONFIG_SMP
+ # mark the primary CPU in cpu_boot_map
+ mov cpu_boot_map,a0
+ mov 0x1,d0
+ mov d0,(a0)
+
+ # signal each secondary CPU to begin booting
+ mov 0x1,d2 # CPU ID
+
+loop_request_boot_secondary:
+ mov d2,a0
+ # send SMP_BOOT_IPI to secondary CPU
+ asl CROSS_ICR_CPU_SHIFT,a0
+ add CROSS_GxICR(SMP_BOOT_IRQ,0),a0
+ movhu (a0),d0
+ or GxICR_REQUEST|GxICR_DETECT,d0
+ movhu d0,(a0)
+ movhu (a0),d0 # flush
+
+ # wait up to 100ms for AP's IPI to be received
+ clr d3
+wait_on_secondary_boot:
+ mov DELAY_TIME_BOOT_IPI,d0
+ call __delay[],0
+ inc d3
+ mov cpu_boot_map,a0
+ mov (a0),d0
+ lsr d2,d0
+ btst 0x1,d0
+ bne 1f
+ cmp TIME_OUT_COUNT_BOOT_IPI,d3
+ bne wait_on_secondary_boot
+1:
+ inc d2
+ cmp NR_CPUS,d2
+ bne loop_request_boot_secondary
+#endif /* CONFIG_SMP */
+
#ifdef CONFIG_GDBSTUB
call gdbstub_init[],0
@@ -217,7 +300,118 @@ __gdbstub_pause:
#endif
jmp start_kernel
- .size _start, _start-.
+ .size _start,.-_start
+
+###############################################################################
+#
+# Secondary CPU boot point
+#
+###############################################################################
+#ifdef CONFIG_SMP
+startup_secondary:
+ # preload the PGD pointer register
+ mov swapper_pg_dir,d0
+ mov d0,(PTBR)
+ clr d0
+ movbu d0,(PIDR)
+
+ # turn on the TLBs
+ mov MMUCTR_IIV|MMUCTR_DIV,d0
+ mov d0,(MMUCTR)
+#ifdef CONFIG_AM34_2
+ mov MMUCTR_ITE|MMUCTR_DTE|MMUCTR_CE|MMUCTR_WTE,d0
+#else
+ mov MMUCTR_ITE|MMUCTR_DTE|MMUCTR_CE,d0
+#endif
+ mov d0,(MMUCTR)
+
+ # turn on AM33v2 exception handling mode and set the trap table base
+ movhu (CPUP),d0
+ or CPUP_EXM_AM33V2,d0
+ movhu d0,(CPUP)
+
+ # set the interrupt vector table
+ mov CONFIG_INTERRUPT_VECTOR_BASE,d0
+ mov d0,(TBR)
+
+ # invalidate and enable both of the caches
+ mov ECHCTR,a0
+ clr d0
+ mov d0,(a0)
+ mov CHCTR,a0
+ clr d0
+ movhu d0,(a0) # turn off first
+ mov CHCTR_ICINV|CHCTR_DCINV,d0
+ movhu d0,(a0)
+ setlb
+ mov (a0),d0
+ btst CHCTR_ICBUSY|CHCTR_DCBUSY,d0 # wait till not busy (use CPU loop buffer)
+ lne
+
+#ifdef CONFIG_MN10300_CACHE_ENABLED
+#ifdef CONFIG_MN10300_CACHE_WBACK
+#ifndef CONFIG_MN10300_CACHE_WBACK_NOWRALLOC
+ mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRBACK,d0
+#else
+ mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRBACK|CHCTR_DCALMD,d0
+#endif /* !NOWRALLOC */
+#else
+ mov CHCTR_ICEN|CHCTR_DCEN|CHCTR_DCWTMD_WRTHROUGH,d0
+#endif /* WBACK */
+ movhu d0,(a0) # enable
+#endif /* ENABLED */
+
+ # Clear the boot IPI interrupt for this CPU
+ movhu (GxICR(SMP_BOOT_IRQ)),d0
+ and ~GxICR_REQUEST,d0
+ movhu d0,(GxICR(SMP_BOOT_IRQ))
+ movhu (GxICR(SMP_BOOT_IRQ)),d0 # flush
+
+ /* get stack */
+ mov CONFIG_INTERRUPT_VECTOR_BASE + CONFIG_BOOT_STACK_OFFSET,a0
+ mov (CPUID),d0
+ and CPUID_MASK,d0
+ mulu CONFIG_BOOT_STACK_SIZE,d0
+ sub d0,a0
+ mov a0,sp
+
+ # init interrupt for AP
+ call smp_prepare_cpu_init[],0
+
+ # mark this secondary CPU in cpu_boot_map
+ mov (CPUID),d0
+ mov 0x1,d1
+ asl d0,d1
+ mov cpu_boot_map,a0
+ bset d1,(a0)
+
+ or EPSW_IE|EPSW_IM_1,epsw # permit level 0 interrupts
+ nop
+ nop
+#ifdef CONFIG_MN10300_CACHE_WBACK
+ # flush the local cache if it's in writeback mode
+ call mn10300_local_dcache_flush_inv[],0
+ setlb
+ mov (CHCTR),d0
+ btst CHCTR_DCBUSY,d0 # wait till not busy (use CPU loop buffer)
+ lne
+#endif
+
+ # now sleep waiting for further instructions
+secondary_sleep:
+ mov CPUM_SLEEP,d0
+ movhu d0,(CPUM)
+ nop
+ nop
+ bra secondary_sleep
+ .size startup_secondary,.-startup_secondary
+#endif /* CONFIG_SMP */
+
+###############################################################################
+#
+#
+#
+###############################################################################
ENTRY(__head_end)
/*
diff --git a/arch/mn10300/kernel/internal.h b/arch/mn10300/kernel/internal.h
index eee2eee..3b1f48b 100644
--- a/arch/mn10300/kernel/internal.h
+++ b/arch/mn10300/kernel/internal.h
@@ -18,3 +18,15 @@ extern int kernel_thread_helper(int);
* entry.S
*/
extern void ret_from_fork(struct task_struct *) __attribute__((noreturn));
+
+/*
+ * smp-low.S
+ */
+#ifdef CONFIG_SMP
+extern void mn10300_low_ipi_handler(void);
+#endif
+
+/*
+ * time.c
+ */
+extern irqreturn_t local_timer_interrupt(void);
diff --git a/arch/mn10300/kernel/irq.c b/arch/mn10300/kernel/irq.c
index b5b970d..80f1572 100644
--- a/arch/mn10300/kernel/irq.c
+++ b/arch/mn10300/kernel/irq.c
@@ -12,11 +12,34 @@
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <linux/seq_file.h>
+#include <linux/cpumask.h>
#include <asm/setup.h>
+#include <asm/serial-regs.h>
-unsigned long __mn10300_irq_enabled_epsw = EPSW_IE | EPSW_IM_7;
+#ifdef CONFIG_SMP
+#undef GxICR
+#define GxICR(X) CROSS_GxICR(X, irq_affinity_online[X])
+
+#undef GxICR_u8
+#define GxICR_u8(X) CROSS_GxICR_u8(X, irq_affinity_online[X])
+#endif /* CONFIG_SMP */
+
+unsigned long __mn10300_irq_enabled_epsw[NR_CPUS] __cacheline_aligned_in_smp = {
+ [0 ... NR_CPUS - 1] = EPSW_IE | EPSW_IM_7
+};
EXPORT_SYMBOL(__mn10300_irq_enabled_epsw);
+#ifdef CONFIG_SMP
+static char irq_affinity_online[NR_IRQS] = {
+ [0 ... NR_IRQS - 1] = 0
+};
+
+#define NR_IRQ_WORDS ((NR_IRQS + 31) / 32)
+static unsigned long irq_affinity_request[NR_IRQ_WORDS] = {
+ [0 ... NR_IRQ_WORDS - 1] = 0
+};
+#endif /* CONFIG_SMP */
+
atomic_t irq_err_count;
/*
@@ -24,30 +47,65 @@ atomic_t irq_err_count;
*/
static void mn10300_cpupic_ack(unsigned int irq)
{
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+ GxICR_u8(irq) = GxICR_DETECT;
+ tmp = GxICR(irq);
+ arch_local_irq_restore(flags);
+}
+
+static void __mask_and_set_icr(unsigned int irq,
+ unsigned int mask, unsigned int set)
+{
+ unsigned long flags;
u16 tmp;
- *(volatile u8 *) &GxICR(irq) = GxICR_DETECT;
+
+ flags = arch_local_cli_save();
tmp = GxICR(irq);
+ GxICR(irq) = (tmp & mask) | set;
+ tmp = GxICR(irq);
+ arch_local_irq_restore(flags);
}
static void mn10300_cpupic_mask(unsigned int irq)
{
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL);
- tmp = GxICR(irq);
+ __mask_and_set_icr(irq, GxICR_LEVEL, 0);
}
static void mn10300_cpupic_mask_ack(unsigned int irq)
{
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_DETECT;
- tmp = GxICR(irq);
+#ifdef CONFIG_SMP
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+
+ if (!test_and_clear_bit(irq, irq_affinity_request)) {
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_DETECT;
+ tmp = GxICR(irq);
+ } else {
+ u16 tmp2;
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL);
+ tmp2 = GxICR(irq);
+
+ irq_affinity_online[irq] = any_online_cpu(*irq_desc[irq].affinity);
+ GxICR(irq) = (tmp & (GxICR_LEVEL | GxICR_ENABLE)) | GxICR_DETECT;
+ tmp = GxICR(irq);
+ }
+
+ arch_local_irq_restore(flags);
+#else /* CONFIG_SMP */
+ __mask_and_set_icr(irq, GxICR_LEVEL, GxICR_DETECT);
+#endif /* CONFIG_SMP */
}
static void mn10300_cpupic_unmask(unsigned int irq)
{
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE;
- tmp = GxICR(irq);
+ __mask_and_set_icr(irq, GxICR_LEVEL, GxICR_ENABLE);
}
static void mn10300_cpupic_unmask_clear(unsigned int irq)
@@ -56,11 +114,89 @@ static void mn10300_cpupic_unmask_clear(unsigned int irq)
* device has ceased to assert its interrupt line and the interrupt
* channel has been disabled in the PIC, so for level-triggered
* interrupts we need to clear the request bit when we re-enable */
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
- tmp = GxICR(irq);
+#ifdef CONFIG_SMP
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+
+ if (!test_and_clear_bit(irq, irq_affinity_request)) {
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
+ tmp = GxICR(irq);
+ } else {
+ tmp = GxICR(irq);
+
+ irq_affinity_online[irq] = any_online_cpu(*irq_desc[irq].affinity);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
+ tmp = GxICR(irq);
+ }
+
+ arch_local_irq_restore(flags);
+#else /* CONFIG_SMP */
+ __mask_and_set_icr(irq, GxICR_LEVEL, GxICR_ENABLE | GxICR_DETECT);
+#endif /* CONFIG_SMP */
}
+#ifdef CONFIG_SMP
+static int
+mn10300_cpupic_setaffinity(unsigned int irq, const struct cpumask *mask)
+{
+ unsigned long flags;
+ int err;
+
+ flags = arch_local_cli_save();
+
+ /* check irq no */
+ switch (irq) {
+ case TMJCIRQ:
+ case RESCHEDULE_IPI:
+ case CALL_FUNC_SINGLE_IPI:
+ case LOCAL_TIMER_IPI:
+ case FLUSH_CACHE_IPI:
+ case CALL_FUNCTION_NMI_IPI:
+ case GDB_NMI_IPI:
+#ifdef CONFIG_MN10300_TTYSM0
+ case SC0RXIRQ:
+ case SC0TXIRQ:
+#ifdef CONFIG_MN10300_TTYSM0_TIMER8
+ case TM8IRQ:
+#elif CONFIG_MN10300_TTYSM0_TIMER2
+ case TM2IRQ:
+#endif /* CONFIG_MN10300_TTYSM0_TIMER8 */
+#endif /* CONFIG_MN10300_TTYSM0 */
+
+#ifdef CONFIG_MN10300_TTYSM1
+ case SC1RXIRQ:
+ case SC1TXIRQ:
+#ifdef CONFIG_MN10300_TTYSM1_TIMER12
+ case TM12IRQ:
+#elif CONFIG_MN10300_TTYSM1_TIMER9
+ case TM9IRQ:
+#elif CONFIG_MN10300_TTYSM1_TIMER3
+ case TM3IRQ:
+#endif /* CONFIG_MN10300_TTYSM1_TIMER12 */
+#endif /* CONFIG_MN10300_TTYSM1 */
+
+#ifdef CONFIG_MN10300_TTYSM2
+ case SC2RXIRQ:
+ case SC2TXIRQ:
+ case TM10IRQ:
+#endif /* CONFIG_MN10300_TTYSM2 */
+ err = -1;
+ break;
+
+ default:
+ set_bit(irq, irq_affinity_request);
+ err = 0;
+ break;
+ }
+
+ arch_local_irq_restore(flags);
+ return err;
+}
+#endif /* CONFIG_SMP */
+
/*
* MN10300 PIC level-triggered IRQ handling.
*
@@ -79,6 +215,9 @@ static struct irq_chip mn10300_cpu_pic_level = {
.mask = mn10300_cpupic_mask,
.mask_ack = mn10300_cpupic_mask,
.unmask = mn10300_cpupic_unmask_clear,
+#ifdef CONFIG_SMP
+ .set_affinity = mn10300_cpupic_setaffinity,
+#endif /* CONFIG_SMP */
};
/*
@@ -94,6 +233,9 @@ static struct irq_chip mn10300_cpu_pic_edge = {
.mask = mn10300_cpupic_mask,
.mask_ack = mn10300_cpupic_mask_ack,
.unmask = mn10300_cpupic_unmask,
+#ifdef CONFIG_SMP
+ .set_affinity = mn10300_cpupic_setaffinity,
+#endif /* CONFIG_SMP */
};
/*
@@ -111,14 +253,34 @@ void ack_bad_irq(int irq)
*/
void set_intr_level(int irq, u16 level)
{
- u16 tmp;
+ BUG_ON(in_interrupt());
- if (in_interrupt())
- BUG();
+ __mask_and_set_icr(irq, GxICR_ENABLE, level);
+}
- tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_ENABLE) | level;
- tmp = GxICR(irq);
+void mn10300_intc_set_level(unsigned int irq, unsigned int level)
+{
+ set_intr_level(irq, NUM2GxICR_LEVEL(level) & GxICR_LEVEL);
+}
+
+void mn10300_intc_clear(unsigned int irq)
+{
+ __mask_and_set_icr(irq, GxICR_LEVEL | GxICR_ENABLE, GxICR_DETECT);
+}
+
+void mn10300_intc_set(unsigned int irq)
+{
+ __mask_and_set_icr(irq, 0, GxICR_REQUEST | GxICR_DETECT);
+}
+
+void mn10300_intc_enable(unsigned int irq)
+{
+ mn10300_cpupic_unmask(irq);
+}
+
+void mn10300_intc_disable(unsigned int irq)
+{
+ mn10300_cpupic_mask(irq);
}
/*
@@ -126,7 +288,7 @@ void set_intr_level(int irq, u16 level)
* than before
* - see Documentation/mn10300/features.txt
*/
-void set_intr_postackable(int irq)
+void mn10300_set_lateack_irq_type(int irq)
{
set_irq_chip_and_handler(irq, &mn10300_cpu_pic_level,
handle_level_irq);
@@ -147,6 +309,7 @@ void __init init_IRQ(void)
* interrupts */
set_irq_chip_and_handler(irq, &mn10300_cpu_pic_edge,
handle_level_irq);
+
unit_init_IRQ();
}
@@ -156,6 +319,7 @@ void __init init_IRQ(void)
asmlinkage void do_IRQ(void)
{
unsigned long sp, epsw, irq_disabled_epsw, old_irq_enabled_epsw;
+ unsigned int cpu_id = smp_processor_id();
int irq;
sp = current_stack_pointer();
@@ -163,12 +327,14 @@ asmlinkage void do_IRQ(void)
/* make sure local_irq_enable() doesn't muck up the interrupt priority
* setting in EPSW */
- old_irq_enabled_epsw = __mn10300_irq_enabled_epsw;
+ old_irq_enabled_epsw = __mn10300_irq_enabled_epsw[cpu_id];
local_save_flags(epsw);
- __mn10300_irq_enabled_epsw = EPSW_IE | (EPSW_IM & epsw);
+ __mn10300_irq_enabled_epsw[cpu_id] = EPSW_IE | (EPSW_IM & epsw);
irq_disabled_epsw = EPSW_IE | MN10300_CLI_LEVEL;
- __IRQ_STAT(smp_processor_id(), __irq_count)++;
+#ifdef CONFIG_MN10300_WD_TIMER
+ __IRQ_STAT(cpu_id, __irq_count)++;
+#endif
irq_enter();
@@ -188,7 +354,7 @@ asmlinkage void do_IRQ(void)
local_irq_restore(epsw);
}
- __mn10300_irq_enabled_epsw = old_irq_enabled_epsw;
+ __mn10300_irq_enabled_epsw[cpu_id] = old_irq_enabled_epsw;
irq_exit();
}
@@ -239,11 +405,13 @@ int show_interrupts(struct seq_file *p, void *v)
/* polish off with NMI and error counters */
case NR_IRQS:
+#ifdef CONFIG_MN10300_WD_TIMER
seq_printf(p, "NMI: ");
for (j = 0; j < NR_CPUS; j++)
if (cpu_online(j))
seq_printf(p, "%10u ", nmi_count(j));
seq_putc(p, '\n');
+#endif
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
break;
@@ -251,3 +419,51 @@ int show_interrupts(struct seq_file *p, void *v)
return 0;
}
+
+#ifdef CONFIG_HOTPLUG_CPU
+void migrate_irqs(void)
+{
+ irq_desc_t *desc;
+ int irq;
+ unsigned int self, new;
+ unsigned long flags;
+
+ self = smp_processor_id();
+ for (irq = 0; irq < NR_IRQS; irq++) {
+ desc = irq_desc + irq;
+
+ if (desc->status == IRQ_PER_CPU)
+ continue;
+
+ if (cpu_isset(self, irq_desc[irq].affinity) &&
+ !cpus_intersects(irq_affinity[irq], cpu_online_map)) {
+ int cpu_id;
+ cpu_id = first_cpu(cpu_online_map);
+ cpu_set(cpu_id, irq_desc[irq].affinity);
+ }
+ /* We need to operate irq_affinity_online atomically. */
+ arch_local_cli_save(flags);
+ if (irq_affinity_online[irq] == self) {
+ u16 x, tmp;
+
+ x = CROSS_GxICR(irq, self);
+ CROSS_GxICR(irq, self) = x & GxICR_LEVEL;
+ tmp = CROSS_GxICR(irq, self);
+
+ new = any_online_cpu(irq_desc[irq].affinity);
+ irq_affinity_online[irq] = new;
+
+ CROSS_GxICR(irq, new) =
+ (x & GxICR_LEVEL) | GxICR_DETECT;
+ tmp = CROSS_GxICR(irq, new);
+
+ x &= GxICR_LEVEL | GxICR_ENABLE;
+ if (CROSS_GxICR(irq, self) & GxICR_REQUEST)
+ x |= GxICR_REQUEST | GxICR_DETECT;
+ CROSS_GxICR(irq, new) = x;
+ tmp = CROSS_GxICR(irq, new);
+ }
+ arch_local_irq_restore(flags);
+ }
+}
+#endif /* CONFIG_HOTPLUG_CPU */
diff --git a/arch/mn10300/kernel/mn10300-serial-low.S b/arch/mn10300/kernel/mn10300-serial-low.S
index 66702d2..dfc1b6f 100644
--- a/arch/mn10300/kernel/mn10300-serial-low.S
+++ b/arch/mn10300/kernel/mn10300-serial-low.S
@@ -39,7 +39,7 @@
###############################################################################
.balign L1_CACHE_BYTES
ENTRY(mn10300_serial_vdma_interrupt)
- or EPSW_IE,psw # permit overriding by
+# or EPSW_IE,psw # permit overriding by
# debugging interrupts
movm [d2,d3,a2,a3,exreg0],(sp)
@@ -164,7 +164,7 @@ mnsc_vdma_tx_noint:
rti
mnsc_vdma_tx_empty:
- mov +(GxICR_LEVEL_1|GxICR_DETECT),d2
+ mov +(NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL)|GxICR_DETECT),d2
movhu d2,(e3) # disable the interrupt
movhu (e3),d2 # flush
@@ -175,7 +175,7 @@ mnsc_vdma_tx_break:
movhu (SCxCTR,e2),d2 # turn on break mode
or SC01CTR_BKE,d2
movhu d2,(SCxCTR,e2)
- mov +(GxICR_LEVEL_1|GxICR_DETECT),d2
+ mov +(NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL)|GxICR_DETECT),d2
movhu d2,(e3) # disable transmit interrupts on this
# channel
movhu (e3),d2 # flush
diff --git a/arch/mn10300/kernel/mn10300-serial.c b/arch/mn10300/kernel/mn10300-serial.c
index db509dd..996384d 100644
--- a/arch/mn10300/kernel/mn10300-serial.c
+++ b/arch/mn10300/kernel/mn10300-serial.c
@@ -44,6 +44,11 @@ static const char serial_revdate[] = "2007-11-06";
#include <unit/timex.h>
#include "mn10300-serial.h"
+#ifdef CONFIG_SMP
+#undef GxICR
+#define GxICR(X) CROSS_GxICR(X, 0)
+#endif /* CONFIG_SMP */
+
#define kenter(FMT, ...) \
printk(KERN_DEBUG "-->%s(" FMT ")\n", __func__, ##__VA_ARGS__)
#define _enter(FMT, ...) \
@@ -57,6 +62,11 @@ static const char serial_revdate[] = "2007-11-06";
#define _proto(FMT, ...) \
no_printk(KERN_DEBUG "### MNSERIAL " FMT " ###\n", ##__VA_ARGS__)
+#ifndef CODMSB
+/* c_cflag bit meaning */
+#define CODMSB 004000000000 /* change Transfer bit-order */
+#endif
+
#define NR_UARTS 3
#ifdef CONFIG_MN10300_TTYSM_CONSOLE
@@ -152,26 +162,35 @@ struct mn10300_serial_port mn10300_serial_port_sif0 = {
.name = "ttySM0",
._iobase = &SC0CTR,
._control = &SC0CTR,
- ._status = (volatile u8 *) &SC0STR,
+ ._status = (volatile u8 *)&SC0STR,
._intr = &SC0ICR,
._rxb = &SC0RXB,
._txb = &SC0TXB,
.rx_name = "ttySM0:Rx",
.tx_name = "ttySM0:Tx",
-#ifdef CONFIG_MN10300_TTYSM0_TIMER8
+#if defined(CONFIG_MN10300_TTYSM0_TIMER8)
.tm_name = "ttySM0:Timer8",
._tmxmd = &TM8MD,
._tmxbr = &TM8BR,
._tmicr = &TM8ICR,
.tm_irq = TM8IRQ,
.div_timer = MNSCx_DIV_TIMER_16BIT,
-#else /* CONFIG_MN10300_TTYSM0_TIMER2 */
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER0)
+ .tm_name = "ttySM0:Timer0",
+ ._tmxmd = &TM0MD,
+ ._tmxbr = (volatile u16 *)&TM0BR,
+ ._tmicr = &TM0ICR,
+ .tm_irq = TM0IRQ,
+ .div_timer = MNSCx_DIV_TIMER_8BIT,
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER2)
.tm_name = "ttySM0:Timer2",
._tmxmd = &TM2MD,
- ._tmxbr = (volatile u16 *) &TM2BR,
+ ._tmxbr = (volatile u16 *)&TM2BR,
._tmicr = &TM2ICR,
.tm_irq = TM2IRQ,
.div_timer = MNSCx_DIV_TIMER_8BIT,
+#else
+#error "Unknown config for ttySM0"
#endif
.rx_irq = SC0RXIRQ,
.tx_irq = SC0TXIRQ,
@@ -205,26 +224,35 @@ struct mn10300_serial_port mn10300_serial_port_sif1 = {
.name = "ttySM1",
._iobase = &SC1CTR,
._control = &SC1CTR,
- ._status = (volatile u8 *) &SC1STR,
+ ._status = (volatile u8 *)&SC1STR,
._intr = &SC1ICR,
._rxb = &SC1RXB,
._txb = &SC1TXB,
.rx_name = "ttySM1:Rx",
.tx_name = "ttySM1:Tx",
-#ifdef CONFIG_MN10300_TTYSM1_TIMER9
+#if defined(CONFIG_MN10300_TTYSM1_TIMER9)
.tm_name = "ttySM1:Timer9",
._tmxmd = &TM9MD,
._tmxbr = &TM9BR,
._tmicr = &TM9ICR,
.tm_irq = TM9IRQ,
.div_timer = MNSCx_DIV_TIMER_16BIT,
-#else /* CONFIG_MN10300_TTYSM1_TIMER3 */
+#elif defined(CONFIG_MN10300_TTYSM1_TIMER3)
.tm_name = "ttySM1:Timer3",
._tmxmd = &TM3MD,
- ._tmxbr = (volatile u16 *) &TM3BR,
+ ._tmxbr = (volatile u16 *)&TM3BR,
._tmicr = &TM3ICR,
.tm_irq = TM3IRQ,
.div_timer = MNSCx_DIV_TIMER_8BIT,
+#elif defined(CONFIG_MN10300_TTYSM1_TIMER12)
+ .tm_name = "ttySM1/Timer12",
+ ._tmxmd = &TM12MD,
+ ._tmxbr = &TM12BR,
+ ._tmicr = &TM12ICR,
+ .tm_irq = TM12IRQ,
+ .div_timer = MNSCx_DIV_TIMER_16BIT,
+#else
+#error "Unknown config for ttySM1"
#endif
.rx_irq = SC1RXIRQ,
.tx_irq = SC1TXIRQ,
@@ -260,20 +288,45 @@ struct mn10300_serial_port mn10300_serial_port_sif2 = {
.uart.lock =
__SPIN_LOCK_UNLOCKED(mn10300_serial_port_sif2.uart.lock),
.name = "ttySM2",
- .rx_name = "ttySM2:Rx",
- .tx_name = "ttySM2:Tx",
- .tm_name = "ttySM2:Timer10",
._iobase = &SC2CTR,
._control = &SC2CTR,
- ._status = &SC2STR,
+ ._status = (volatile u8 *)&SC2STR,
._intr = &SC2ICR,
._rxb = &SC2RXB,
._txb = &SC2TXB,
+ .rx_name = "ttySM2:Rx",
+ .tx_name = "ttySM2:Tx",
+#if defined(CONFIG_MN10300_TTYSM2_TIMER10)
+ .tm_name = "ttySM2/Timer10",
._tmxmd = &TM10MD,
._tmxbr = &TM10BR,
._tmicr = &TM10ICR,
.tm_irq = TM10IRQ,
.div_timer = MNSCx_DIV_TIMER_16BIT,
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER9)
+ .tm_name = "ttySM2/Timer9",
+ ._tmxmd = &TM9MD,
+ ._tmxbr = &TM9BR,
+ ._tmicr = &TM9ICR,
+ .tm_irq = TM9IRQ,
+ .div_timer = MNSCx_DIV_TIMER_16BIT,
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER1)
+ .tm_name = "ttySM2/Timer1",
+ ._tmxmd = &TM1MD,
+ ._tmxbr = (volatile u16 *)&TM1BR,
+ ._tmicr = &TM1ICR,
+ .tm_irq = TM1IRQ,
+ .div_timer = MNSCx_DIV_TIMER_8BIT,
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER3)
+ .tm_name = "ttySM2/Timer3",
+ ._tmxmd = &TM3MD,
+ ._tmxbr = (volatile u16 *)&TM3BR,
+ ._tmicr = &TM3ICR,
+ .tm_irq = TM3IRQ,
+ .div_timer = MNSCx_DIV_TIMER_8BIT,
+#else
+#error "Unknown config for ttySM2"
+#endif
.rx_irq = SC2RXIRQ,
.tx_irq = SC2TXIRQ,
.rx_icr = &GxICR(SC2RXIRQ),
@@ -322,9 +375,13 @@ struct mn10300_serial_port *mn10300_serial_ports[NR_UARTS + 1] = {
*/
static void mn10300_serial_mask_ack(unsigned int irq)
{
+ unsigned long flags;
u16 tmp;
+
+ flags = arch_local_cli_save();
GxICR(irq) = GxICR_LEVEL_6;
tmp = GxICR(irq); /* flush write buffer */
+ arch_local_irq_restore(flags);
}
static void mn10300_serial_nop(unsigned int irq)
@@ -348,23 +405,36 @@ struct mn10300_serial_int mn10300_serial_int_tbl[NR_IRQS];
static void mn10300_serial_dis_tx_intr(struct mn10300_serial_port *port)
{
+ unsigned long flags;
u16 x;
- *port->tx_icr = GxICR_LEVEL_1 | GxICR_DETECT;
+
+ flags = arch_local_cli_save();
+ *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
x = *port->tx_icr;
+ arch_local_irq_restore(flags);
}
static void mn10300_serial_en_tx_intr(struct mn10300_serial_port *port)
{
+ unsigned long flags;
u16 x;
- *port->tx_icr = GxICR_LEVEL_1 | GxICR_ENABLE;
+
+ flags = arch_local_cli_save();
+ *port->tx_icr =
+ NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL) | GxICR_ENABLE;
x = *port->tx_icr;
+ arch_local_irq_restore(flags);
}
static void mn10300_serial_dis_rx_intr(struct mn10300_serial_port *port)
{
+ unsigned long flags;
u16 x;
- *port->rx_icr = GxICR_LEVEL_1 | GxICR_DETECT;
+
+ flags = arch_local_cli_save();
+ *port->rx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
x = *port->rx_icr;
+ arch_local_irq_restore(flags);
}
/*
@@ -650,7 +720,7 @@ static unsigned int mn10300_serial_tx_empty(struct uart_port *_port)
static void mn10300_serial_set_mctrl(struct uart_port *_port,
unsigned int mctrl)
{
- struct mn10300_serial_port *port =
+ struct mn10300_serial_port *port __attribute__ ((unused)) =
container_of(_port, struct mn10300_serial_port, uart);
_enter("%s,%x", port->name, mctrl);
@@ -706,6 +776,7 @@ static void mn10300_serial_start_tx(struct uart_port *_port)
UART_XMIT_SIZE));
/* kick the virtual DMA controller */
+ arch_local_cli();
x = *port->tx_icr;
x |= GxICR_ENABLE;
@@ -716,10 +787,14 @@ static void mn10300_serial_start_tx(struct uart_port *_port)
_debug("CTR=%04hx ICR=%02hx STR=%04x TMD=%02hx TBR=%04hx ICR=%04hx",
*port->_control, *port->_intr, *port->_status,
- *port->_tmxmd, *port->_tmxbr, *port->tx_icr);
+ *port->_tmxmd,
+ (port->div_timer == MNSCx_DIV_TIMER_8BIT) ?
+ *(volatile u8 *)port->_tmxbr : *port->_tmxbr,
+ *port->tx_icr);
*port->tx_icr = x;
x = *port->tx_icr;
+ arch_local_sti();
}
/*
@@ -842,8 +917,10 @@ static int mn10300_serial_startup(struct uart_port *_port)
pint->port = port;
pint->vdma = mn10300_serial_vdma_tx_handler;
- set_intr_level(port->rx_irq, GxICR_LEVEL_1);
- set_intr_level(port->tx_irq, GxICR_LEVEL_1);
+ set_intr_level(port->rx_irq,
+ NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL));
+ set_intr_level(port->tx_irq,
+ NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL));
set_irq_chip(port->tm_irq, &mn10300_serial_pic);
if (request_irq(port->rx_irq, mn10300_serial_interrupt,
@@ -876,6 +953,7 @@ error:
*/
static void mn10300_serial_shutdown(struct uart_port *_port)
{
+ u16 x;
struct mn10300_serial_port *port =
container_of(_port, struct mn10300_serial_port, uart);
@@ -897,8 +975,12 @@ static void mn10300_serial_shutdown(struct uart_port *_port)
free_irq(port->rx_irq, port);
free_irq(port->tx_irq, port);
- *port->rx_icr = GxICR_LEVEL_1;
- *port->tx_icr = GxICR_LEVEL_1;
+ arch_local_cli();
+ *port->rx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
+ x = *port->rx_icr;
+ *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
+ x = *port->tx_icr;
+ arch_local_sti();
}
/*
@@ -947,11 +1029,66 @@ static void mn10300_serial_change_speed(struct mn10300_serial_port *port,
/* Determine divisor based on baud rate */
battempt = 0;
- if (div_timer == MNSCx_DIV_TIMER_16BIT)
- scxctr |= SC0CTR_CK_TM8UFLOW_8; /* ( == SC1CTR_CK_TM9UFLOW_8
- * == SC2CTR_CK_TM10UFLOW) */
- else if (div_timer == MNSCx_DIV_TIMER_8BIT)
+ switch (port->uart.line) {
+#ifdef CONFIG_MN10300_TTYSM0
+ case 0: /* ttySM0 */
+#if defined(CONFIG_MN10300_TTYSM0_TIMER8)
+ scxctr |= SC0CTR_CK_TM8UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER0)
+ scxctr |= SC0CTR_CK_TM0UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM0_TIMER2)
scxctr |= SC0CTR_CK_TM2UFLOW_8;
+#else
+#error "Unknown config for ttySM0"
+#endif
+ break;
+#endif /* CONFIG_MN10300_TTYSM0 */
+
+#ifdef CONFIG_MN10300_TTYSM1
+ case 1: /* ttySM1 */
+#if defined(CONFIG_AM33_2) || defined(CONFIG_AM33_3)
+#if defined(CONFIG_MN10300_TTYSM1_TIMER9)
+ scxctr |= SC1CTR_CK_TM9UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM1_TIMER3)
+ scxctr |= SC1CTR_CK_TM3UFLOW_8;
+#else
+#error "Unknown config for ttySM1"
+#endif
+#else /* CONFIG_AM33_2 || CONFIG_AM33_3 */
+#if defined(CONFIG_MN10300_TTYSM1_TIMER12)
+ scxctr |= SC1CTR_CK_TM12UFLOW_8;
+#else
+#error "Unknown config for ttySM1"
+#endif
+#endif /* CONFIG_AM33_2 || CONFIG_AM33_3 */
+ break;
+#endif /* CONFIG_MN10300_TTYSM1 */
+
+#ifdef CONFIG_MN10300_TTYSM2
+ case 2: /* ttySM2 */
+#if defined(CONFIG_AM33_2)
+#if defined(CONFIG_MN10300_TTYSM2_TIMER10)
+ scxctr |= SC2CTR_CK_TM10UFLOW;
+#else
+#error "Unknown config for ttySM2"
+#endif
+#else /* CONFIG_AM33_2 */
+#if defined(CONFIG_MN10300_TTYSM2_TIMER9)
+ scxctr |= SC2CTR_CK_TM9UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER1)
+ scxctr |= SC2CTR_CK_TM1UFLOW_8;
+#elif defined(CONFIG_MN10300_TTYSM2_TIMER3)
+ scxctr |= SC2CTR_CK_TM3UFLOW_8;
+#else
+#error "Unknown config for ttySM2"
+#endif
+#endif /* CONFIG_AM33_2 */
+ break;
+#endif /* CONFIG_MN10300_TTYSM2 */
+
+ default:
+ break;
+ }
try_alternative:
baud = uart_get_baud_rate(&port->uart, new, old, 0,
@@ -1195,6 +1332,12 @@ static void mn10300_serial_set_termios(struct uart_port *_port,
ctr &= ~SC2CTR_TWE;
*port->_control = ctr;
}
+
+ /* change Transfer bit-order (LSB/MSB) */
+ if (new->c_cflag & CODMSB)
+ *port->_control |= SC01CTR_OD_MSBFIRST; /* MSB MODE */
+ else
+ *port->_control &= ~SC01CTR_OD_MSBFIRST; /* LSB MODE */
}
/*
@@ -1302,11 +1445,16 @@ static int __init mn10300_serial_init(void)
printk(KERN_INFO "%s version %s (%s)\n",
serial_name, serial_version, serial_revdate);
-#ifdef CONFIG_MN10300_TTYSM2
- SC2TIM = 8; /* make the baud base of timer 2 IOCLK/8 */
+#if defined(CONFIG_MN10300_TTYSM2) && defined(CONFIG_AM33_2)
+ {
+ int tmp;
+ SC2TIM = 8; /* make the baud base of timer 2 IOCLK/8 */
+ tmp = SC2TIM;
+ }
#endif
- set_intr_stub(EXCEP_IRQ_LEVEL1, mn10300_serial_vdma_interrupt);
+ set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL),
+ mn10300_serial_vdma_interrupt);
ret = uart_register_driver(&mn10300_serial_driver);
if (!ret) {
@@ -1366,9 +1514,11 @@ static void mn10300_serial_console_write(struct console *co,
port = mn10300_serial_ports[co->index];
/* firstly hijack the serial port from the "virtual DMA" controller */
+ arch_local_cli();
txicr = *port->tx_icr;
- *port->tx_icr = GxICR_LEVEL_1;
+ *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL);
tmp = *port->tx_icr;
+ arch_local_sti();
/* the transmitter may be disabled */
scxctr = *port->_control;
@@ -1422,8 +1572,10 @@ static void mn10300_serial_console_write(struct console *co,
if (!(scxctr & SC01CTR_TXE))
*port->_control = scxctr;
+ arch_local_cli();
*port->tx_icr = txicr;
tmp = *port->tx_icr;
+ arch_local_sti();
}
/*
diff --git a/arch/mn10300/kernel/mn10300-watchdog-low.S b/arch/mn10300/kernel/mn10300-watchdog-low.S
index 9962447..f2f5c9c 100644
--- a/arch/mn10300/kernel/mn10300-watchdog-low.S
+++ b/arch/mn10300/kernel/mn10300-watchdog-low.S
@@ -16,6 +16,7 @@
#include <asm/intctl-regs.h>
#include <asm/timer-regs.h>
#include <asm/frame.inc>
+#include <linux/threads.h>
.text
@@ -53,7 +54,13 @@ watchdog_handler:
.type touch_nmi_watchdog,@function
touch_nmi_watchdog:
clr d0
- mov d0,(watchdog_alert_counter)
+ clr d1
+ mov watchdog_alert_counter, a0
+ setlb
+ mov d0, (a0+)
+ inc d1
+ cmp NR_CPUS, d1
+ lne
ret [],0
.size touch_nmi_watchdog,.-touch_nmi_watchdog
diff --git a/arch/mn10300/kernel/mn10300-watchdog.c b/arch/mn10300/kernel/mn10300-watchdog.c
index f362d9d..965dd61 100644
--- a/arch/mn10300/kernel/mn10300-watchdog.c
+++ b/arch/mn10300/kernel/mn10300-watchdog.c
@@ -30,7 +30,7 @@
static DEFINE_SPINLOCK(watchdog_print_lock);
static unsigned int watchdog;
static unsigned int watchdog_hz = 1;
-unsigned int watchdog_alert_counter;
+unsigned int watchdog_alert_counter[NR_CPUS];
EXPORT_SYMBOL(touch_nmi_watchdog);
@@ -39,9 +39,6 @@ EXPORT_SYMBOL(touch_nmi_watchdog);
* is to check its timer makes IRQ counts. If they are not
* changing then that CPU has some problem.
*
- * as these watchdog NMI IRQs are generated on every CPU, we only
- * have to check the current processor.
- *
* since NMIs dont listen to _any_ locks, we have to be extremely
* careful not to rely on unsafe variables. The printk might lock
* up though, so we have to break up any console locks first ...
@@ -69,8 +66,8 @@ int __init check_watchdog(void)
printk(KERN_INFO "OK.\n");
- /* now that we know it works we can reduce NMI frequency to
- * something more reasonable; makes a difference in some configs
+ /* now that we know it works we can reduce NMI frequency to something
+ * more reasonable; makes a difference in some configs
*/
watchdog_hz = 1;
@@ -121,15 +118,22 @@ void __init watchdog_go(void)
}
}
+#ifdef CONFIG_SMP
+static void watchdog_dump_register(void *dummy)
+{
+ printk(KERN_ERR "--- Register Dump (CPU%d) ---\n", CPUID);
+ show_registers(__frame);
+}
+#endif
+
asmlinkage
void watchdog_interrupt(struct pt_regs *regs, enum exception_code excep)
{
-
/*
* Since current-> is always on the stack, and we always switch
* the stack NMI-atomically, it's safe to use smp_processor_id().
*/
- int sum, cpu = smp_processor_id();
+ int sum, cpu;
int irq = NMIIRQ;
u8 wdt, tmp;
@@ -138,43 +142,61 @@ void watchdog_interrupt(struct pt_regs *regs, enum exception_code excep)
tmp = WDCTR;
NMICR = NMICR_WDIF;
- nmi_count(cpu)++;
+ nmi_count(smp_processor_id())++;
kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
- sum = irq_stat[cpu].__irq_count;
-
- if (last_irq_sums[cpu] == sum) {
- /*
- * Ayiee, looks like this CPU is stuck ...
- * wait a few IRQs (5 seconds) before doing the oops ...
- */
- watchdog_alert_counter++;
- if (watchdog_alert_counter == 5 * watchdog_hz) {
- spin_lock(&watchdog_print_lock);
+
+ for_each_online_cpu(cpu) {
+
+ sum = irq_stat[cpu].__irq_count;
+
+ if ((last_irq_sums[cpu] == sum)
+#if defined(CONFIG_GDBSTUB) && defined(CONFIG_SMP)
+ && !(CHK_GDBSTUB_BUSY()
+ || atomic_read(&cpu_doing_single_step))
+#endif
+ ) {
/*
- * We are in trouble anyway, lets at least try
- * to get a message out.
+ * Ayiee, looks like this CPU is stuck ...
+ * wait a few IRQs (5 seconds) before doing the oops ...
*/
- bust_spinlocks(1);
- printk(KERN_ERR
- "NMI Watchdog detected LOCKUP on CPU%d,"
- " pc %08lx, registers:\n",
- cpu, regs->pc);
- show_registers(regs);
- printk("console shuts up ...\n");
- console_silent();
- spin_unlock(&watchdog_print_lock);
- bust_spinlocks(0);
+ watchdog_alert_counter[cpu]++;
+ if (watchdog_alert_counter[cpu] == 5 * watchdog_hz) {
+ spin_lock(&watchdog_print_lock);
+ /*
+ * We are in trouble anyway, lets at least try
+ * to get a message out.
+ */
+ bust_spinlocks(1);
+ printk(KERN_ERR
+ "NMI Watchdog detected LOCKUP on CPU%d,"
+ " pc %08lx, registers:\n",
+ cpu, regs->pc);
+#ifdef CONFIG_SMP
+ printk(KERN_ERR
+ "--- Register Dump (CPU%d) ---\n",
+ CPUID);
+#endif
+ show_registers(regs);
+#ifdef CONFIG_SMP
+ smp_nmi_call_function(watchdog_dump_register,
+ NULL, 1);
+#endif
+ printk(KERN_NOTICE "console shuts up ...\n");
+ console_silent();
+ spin_unlock(&watchdog_print_lock);
+ bust_spinlocks(0);
#ifdef CONFIG_GDBSTUB
- if (gdbstub_busy)
- gdbstub_exception(regs, excep);
- else
- gdbstub_intercept(regs, excep);
+ if (CHK_GDBSTUB_BUSY_AND_ACTIVE())
+ gdbstub_exception(regs, excep);
+ else
+ gdbstub_intercept(regs, excep);
#endif
- do_exit(SIGSEGV);
+ do_exit(SIGSEGV);
+ }
+ } else {
+ last_irq_sums[cpu] = sum;
+ watchdog_alert_counter[cpu] = 0;
}
- } else {
- last_irq_sums[cpu] = sum;
- watchdog_alert_counter = 0;
}
WDCTR = wdt | WDCTR_WDRST;
diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c
index 243e33c..b2e85ed 100644
--- a/arch/mn10300/kernel/process.c
+++ b/arch/mn10300/kernel/process.c
@@ -57,6 +57,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
+#if !defined(CONFIG_SMP) || defined(CONFIG_HOTPLUG_CPU)
/*
* we use this if we don't have any better idle routine
*/
@@ -69,6 +70,35 @@ static void default_idle(void)
local_irq_enable();
}
+#else /* !CONFIG_SMP || CONFIG_HOTPLUG_CPU */
+/*
+ * On SMP it's slightly faster (but much more power-consuming!)
+ * to poll the ->work.need_resched flag instead of waiting for the
+ * cross-CPU IPI to arrive. Use this option with caution.
+ */
+static inline void poll_idle(void)
+{
+ int oldval;
+
+ local_irq_enable();
+
+ /*
+ * Deal with another CPU just having chosen a thread to
+ * run here:
+ */
+ oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);
+
+ if (!oldval) {
+ set_thread_flag(TIF_POLLING_NRFLAG);
+ while (!need_resched())
+ cpu_relax();
+ clear_thread_flag(TIF_POLLING_NRFLAG);
+ } else {
+ set_need_resched();
+ }
+}
+#endif /* !CONFIG_SMP || CONFIG_HOTPLUG_CPU */
+
/*
* the idle thread
* - there's no useful work to be done, so just try to conserve power and have
@@ -77,8 +107,6 @@ static void default_idle(void)
*/
void cpu_idle(void)
{
- int cpu = smp_processor_id();
-
/* endless idle loop with no priority at all */
for (;;) {
while (!need_resched()) {
@@ -86,8 +114,13 @@ void cpu_idle(void)
smp_rmb();
idle = pm_idle;
- if (!idle)
+ if (!idle) {
+#if defined(CONFIG_SMP) && !defined(CONFIG_HOTPLUG_CPU)
+ idle = poll_idle;
+#else /* CONFIG_SMP && !CONFIG_HOTPLUG_CPU */
idle = default_idle;
+#endif /* CONFIG_SMP && !CONFIG_HOTPLUG_CPU */
+ }
idle();
}
@@ -233,7 +266,7 @@ int copy_thread(unsigned long clone_flags,
}
/* set up things up so the scheduler can start the new task */
- p->thread.__frame = c_kregs;
+ p->thread.frame = c_kregs;
p->thread.a3 = (unsigned long) c_kregs;
p->thread.sp = c_ksp;
p->thread.pc = (unsigned long) ret_from_fork;
diff --git a/arch/mn10300/kernel/profile.c b/arch/mn10300/kernel/profile.c
index 20d7d03..4f342f7 100644
--- a/arch/mn10300/kernel/profile.c
+++ b/arch/mn10300/kernel/profile.c
@@ -41,7 +41,7 @@ static __init int profile_init(void)
tmp = TM11ICR;
printk(KERN_INFO "Profiling initiated on timer 11, priority 0, %uHz\n",
- mn10300_ioclk / 8 / (TM11BR + 1));
+ MN10300_IOCLK / 8 / (TM11BR + 1));
printk(KERN_INFO "Profile histogram stored %p-%p\n",
prof_buffer, (u8 *)(prof_buffer + prof_len) - 1);
diff --git a/arch/mn10300/kernel/rtc.c b/arch/mn10300/kernel/rtc.c
index 4eef0e7..e9e20f9 100644
--- a/arch/mn10300/kernel/rtc.c
+++ b/arch/mn10300/kernel/rtc.c
@@ -20,18 +20,22 @@
DEFINE_SPINLOCK(rtc_lock);
EXPORT_SYMBOL(rtc_lock);
-/* time for RTC to update itself in ioclks */
-static unsigned long mn10300_rtc_update_period;
-
+/*
+ * Read the current RTC time
+ */
void read_persistent_clock(struct timespec *ts)
{
struct rtc_time tm;
get_rtc_time(&tm);
- ts->tv_sec = mktime(tm.tm_year, tm.tm_mon, tm.tm_mday,
- tm.tm_hour, tm.tm_min, tm.tm_sec);
ts->tv_nsec = 0;
+ ts->tv_sec = mktime(tm.tm_year, tm.tm_mon, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
+
+ /* if rtc is way off in the past, set something reasonable */
+ if (ts->tv_sec < 0)
+ ts->tv_sec = mktime(2009, 1, 1, 12, 0, 0);
}
/*
@@ -115,39 +119,14 @@ int update_persistent_clock(struct timespec now)
*/
void __init calibrate_clock(void)
{
- unsigned long count0, counth, count1;
unsigned char status;
/* make sure the RTC is running and is set to operate in 24hr mode */
status = RTSRC;
RTCRB |= RTCRB_SET;
RTCRB |= RTCRB_TM_24HR;
+ RTCRB &= ~RTCRB_DM_BINARY;
RTCRA |= RTCRA_DVR;
RTCRA &= ~RTCRA_DVR;
RTCRB &= ~RTCRB_SET;
-
- /* work out the clock speed by counting clock cycles between ends of
- * the RTC update cycle - track the RTC through one complete update
- * cycle (1 second)
- */
- startup_timestamp_counter();
-
- while (!(RTCRA & RTCRA_UIP)) {}
- while ((RTCRA & RTCRA_UIP)) {}
-
- count0 = TMTSCBC;
-
- while (!(RTCRA & RTCRA_UIP)) {}
-
- counth = TMTSCBC;
-
- while ((RTCRA & RTCRA_UIP)) {}
-
- count1 = TMTSCBC;
-
- shutdown_timestamp_counter();
-
- MN10300_TSCCLK = count0 - count1; /* the timers count down */
- mn10300_rtc_update_period = counth - count1;
- MN10300_TSC_PER_HZ = MN10300_TSCCLK / HZ;
}
diff --git a/arch/mn10300/kernel/setup.c b/arch/mn10300/kernel/setup.c
index d464aff..1251457 100644
--- a/arch/mn10300/kernel/setup.c
+++ b/arch/mn10300/kernel/setup.c
@@ -22,6 +22,7 @@
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
+#include <linux/cpu.h>
#include <asm/processor.h>
#include <linux/console.h>
#include <asm/uaccess.h>
@@ -30,7 +31,6 @@
#include <asm/io.h>
#include <asm/smp.h>
#include <proc/proc.h>
-#include <asm/busctl-regs.h>
#include <asm/fpu.h>
#include <asm/sections.h>
@@ -64,11 +64,13 @@ unsigned long memory_size;
struct thread_info *__current_ti = &init_thread_union.thread_info;
struct task_struct *__current = &init_task;
-#define mn10300_known_cpus 3
+#define mn10300_known_cpus 5
static const char *const mn10300_cputypes[] = {
- "am33v1",
- "am33v2",
- "am34v1",
+ "am33-1",
+ "am33-2",
+ "am34-1",
+ "am33-3",
+ "am34-2",
"unknown"
};
@@ -123,6 +125,7 @@ void __init setup_arch(char **cmdline_p)
cpu_init();
unit_setup();
+ smp_init_cpus();
parse_mem_cmdline(cmdline_p);
init_mm.start_code = (unsigned long)&_text;
@@ -179,7 +182,6 @@ void __init setup_arch(char **cmdline_p)
void __init cpu_init(void)
{
unsigned long cpurev = CPUREV, type;
- unsigned long base, size;
type = (CPUREV & CPUREV_TYPE) >> CPUREV_TYPE_S;
if (type > mn10300_known_cpus)
@@ -189,47 +191,46 @@ void __init cpu_init(void)
mn10300_cputypes[type],
(cpurev & CPUREV_REVISION) >> CPUREV_REVISION_S);
- /* determine the memory size and base from the memory controller regs */
- memory_size = 0;
-
- base = SDBASE(0);
- if (base & SDBASE_CE) {
- size = (base & SDBASE_CBAM) << SDBASE_CBAM_SHIFT;
- size = ~size + 1;
- base &= SDBASE_CBA;
+ get_mem_info(&phys_memory_base, &memory_size);
+ phys_memory_end = phys_memory_base + memory_size;
- printk(KERN_INFO "SDRAM[0]: %luMb @%08lx\n", size >> 20, base);
- memory_size += size;
- phys_memory_base = base;
- }
+ fpu_init_state();
+}
- base = SDBASE(1);
- if (base & SDBASE_CE) {
- size = (base & SDBASE_CBAM) << SDBASE_CBAM_SHIFT;
- size = ~size + 1;
- base &= SDBASE_CBA;
+static struct cpu cpu_devices[NR_CPUS];
- printk(KERN_INFO "SDRAM[1]: %luMb @%08lx\n", size >> 20, base);
- memory_size += size;
- if (phys_memory_base == 0)
- phys_memory_base = base;
- }
+static int __init topology_init(void)
+{
+ int i;
- phys_memory_end = phys_memory_base + memory_size;
+ for_each_present_cpu(i)
+ register_cpu(&cpu_devices[i], i);
-#ifdef CONFIG_FPU
- fpu_init_state();
-#endif
+ return 0;
}
+subsys_initcall(topology_init);
+
/*
* Get CPU information for use by the procfs.
*/
static int show_cpuinfo(struct seq_file *m, void *v)
{
+#ifdef CONFIG_SMP
+ struct mn10300_cpuinfo *c = v;
+ unsigned long cpu_id = c - cpu_data;
+ unsigned long cpurev = c->type, type, icachesz, dcachesz;
+#else /* CONFIG_SMP */
+ unsigned long cpu_id = 0;
unsigned long cpurev = CPUREV, type, icachesz, dcachesz;
+#endif /* CONFIG_SMP */
- type = (CPUREV & CPUREV_TYPE) >> CPUREV_TYPE_S;
+#ifdef CONFIG_SMP
+ if (!cpu_online(cpu_id))
+ return 0;
+#endif
+
+ type = (cpurev & CPUREV_TYPE) >> CPUREV_TYPE_S;
if (type > mn10300_known_cpus)
type = mn10300_known_cpus;
@@ -244,13 +245,14 @@ static int show_cpuinfo(struct seq_file *m, void *v)
1024;
seq_printf(m,
- "processor : 0\n"
+ "processor : %ld\n"
"vendor_id : Matsushita\n"
"cpu core : %s\n"
"cpu rev : %lu\n"
"model name : " PROCESSOR_MODEL_NAME "\n"
"icache size: %lu\n"
"dcache size: %lu\n",
+ cpu_id,
mn10300_cputypes[type],
(cpurev & CPUREV_REVISION) >> CPUREV_REVISION_S,
icachesz,
@@ -262,8 +264,13 @@ static int show_cpuinfo(struct seq_file *m, void *v)
"bogomips : %lu.%02lu\n\n",
MN10300_IOCLK / 1000000,
(MN10300_IOCLK / 10000) % 100,
+#ifdef CONFIG_SMP
+ c->loops_per_jiffy / (500000 / HZ),
+ (c->loops_per_jiffy / (5000 / HZ)) % 100
+#else /* CONFIG_SMP */
loops_per_jiffy / (500000 / HZ),
(loops_per_jiffy / (5000 / HZ)) % 100
+#endif /* CONFIG_SMP */
);
return 0;
diff --git a/arch/mn10300/kernel/smp-low.S b/arch/mn10300/kernel/smp-low.S
new file mode 100644
index 0000000..72938ce
--- /dev/null
+++ b/arch/mn10300/kernel/smp-low.S
@@ -0,0 +1,97 @@
+/* SMP IPI low-level handler
+ *
+ * Copyright (C) 2006-2007 Matsushita Electric Industrial Co., Ltd.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/sys.h>
+#include <linux/linkage.h>
+#include <asm/smp.h>
+#include <asm/system.h>
+#include <asm/thread_info.h>
+#include <asm/cpu-regs.h>
+#include <proc/smp-regs.h>
+#include <asm/asm-offsets.h>
+#include <asm/frame.inc>
+
+ .am33_2
+
+###############################################################################
+#
+# IPI interrupt handler
+#
+###############################################################################
+ .globl mn10300_low_ipi_handler
+mn10300_low_ipi_handler:
+ add -4,sp
+ mov d0,(sp)
+ movhu (IAGR),d0
+ and IAGR_GN,d0
+ lsr 0x2,d0
+#ifdef CONFIG_MN10300_CACHE_ENABLED
+ cmp FLUSH_CACHE_IPI,d0
+ beq mn10300_flush_cache_ipi
+#endif
+ cmp SMP_BOOT_IRQ,d0
+ beq mn10300_smp_boot_ipi
+ /* OTHERS */
+ mov (sp),d0
+ add 4,sp
+#ifdef CONFIG_GDBSTUB
+ jmp gdbstub_io_rx_handler
+#else
+ jmp end
+#endif
+
+###############################################################################
+#
+# Cache flush IPI interrupt handler
+#
+###############################################################################
+#ifdef CONFIG_MN10300_CACHE_ENABLED
+mn10300_flush_cache_ipi:
+ mov (sp),d0
+ add 4,sp
+
+ /* FLUSH_CACHE_IPI */
+ add -4,sp
+ SAVE_ALL
+ mov GxICR_DETECT,d2
+ movbu d2,(GxICR(FLUSH_CACHE_IPI)) # ACK the interrupt
+ movhu (GxICR(FLUSH_CACHE_IPI)),d2
+ call smp_cache_interrupt[],0
+ RESTORE_ALL
+ jmp end
+#endif
+
+###############################################################################
+#
+# SMP boot CPU IPI interrupt handler
+#
+###############################################################################
+mn10300_smp_boot_ipi:
+ /* clear interrupt */
+ movhu (GxICR(SMP_BOOT_IRQ)),d0
+ and ~GxICR_REQUEST,d0
+ movhu d0,(GxICR(SMP_BOOT_IRQ))
+ mov (sp),d0
+ add 4,sp
+
+ # get stack
+ mov (CPUID),a0
+ add -1,a0
+ add a0,a0
+ add a0,a0
+ mov (start_stack,a0),a0
+ mov a0,sp
+ jmp initialize_secondary
+
+
+# Jump here after RTI to suppress the icache lookahead
+end:
diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c
new file mode 100644
index 0000000..b80234c
--- /dev/null
+++ b/arch/mn10300/kernel/smp.c
@@ -0,0 +1,1141 @@
+/* SMP support routines.
+ *
+ * Copyright (C) 2006-2008 Panasonic Corporation
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/cpumask.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/profile.h>
+#include <linux/smp.h>
+#include <asm/tlbflush.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/processor.h>
+#include <asm/bug.h>
+#include <asm/exceptions.h>
+#include <asm/hardirq.h>
+#include <asm/fpu.h>
+#include <asm/mmu_context.h>
+#include <asm/thread_info.h>
+#include <asm/cpu-regs.h>
+#include <asm/intctl-regs.h>
+#include "internal.h"
+
+#ifdef CONFIG_HOTPLUG_CPU
+#include <linux/cpu.h>
+#include <asm/cacheflush.h>
+
+static unsigned long sleep_mode[NR_CPUS];
+
+static void run_sleep_cpu(unsigned int cpu);
+static void run_wakeup_cpu(unsigned int cpu);
+#endif /* CONFIG_HOTPLUG_CPU */
+
+/*
+ * Debug Message function
+ */
+
+#undef DEBUG_SMP
+#ifdef DEBUG_SMP
+#define Dprintk(fmt, ...) printk(KERN_DEBUG fmt, ##__VA_ARGS__)
+#else
+#define Dprintk(fmt, ...) no_printk(KERN_DEBUG fmt, ##__VA_ARGS__)
+#endif
+
+/* timeout value in msec for smp_nmi_call_function. zero is no timeout. */
+#define CALL_FUNCTION_NMI_IPI_TIMEOUT 0
+
+/*
+ * Structure and data for smp_nmi_call_function().
+ */
+struct nmi_call_data_struct {
+ smp_call_func_t func;
+ void *info;
+ cpumask_t started;
+ cpumask_t finished;
+ int wait;
+ char size_alignment[0]
+ __attribute__ ((__aligned__(SMP_CACHE_BYTES)));
+} __attribute__ ((__aligned__(SMP_CACHE_BYTES)));
+
+static DEFINE_SPINLOCK(smp_nmi_call_lock);
+static struct nmi_call_data_struct *nmi_call_data;
+
+/*
+ * Data structures and variables
+ */
+static cpumask_t cpu_callin_map; /* Bitmask of callin CPUs */
+static cpumask_t cpu_callout_map; /* Bitmask of callout CPUs */
+cpumask_t cpu_boot_map; /* Bitmask of boot APs */
+unsigned long start_stack[NR_CPUS - 1];
+
+/*
+ * Per CPU parameters
+ */
+struct mn10300_cpuinfo cpu_data[NR_CPUS] __cacheline_aligned;
+
+static int cpucount; /* The count of boot CPUs */
+static cpumask_t smp_commenced_mask;
+cpumask_t cpu_initialized __initdata = CPU_MASK_NONE;
+
+/*
+ * Function Prototypes
+ */
+static int do_boot_cpu(int);
+static void smp_show_cpu_info(int cpu_id);
+static void smp_callin(void);
+static void smp_online(void);
+static void smp_store_cpu_info(int);
+static void smp_cpu_init(void);
+static void smp_tune_scheduling(void);
+static void send_IPI_mask(const cpumask_t *cpumask, int irq);
+static void init_ipi(void);
+
+/*
+ * IPI Initialization interrupt definitions
+ */
+static void mn10300_ipi_disable(unsigned int irq);
+static void mn10300_ipi_enable(unsigned int irq);
+static void mn10300_ipi_ack(unsigned int irq);
+static void mn10300_ipi_nop(unsigned int irq);
+
+static struct irq_chip mn10300_ipi_type = {
+ .name = "cpu_ipi",
+ .disable = mn10300_ipi_disable,
+ .enable = mn10300_ipi_enable,
+ .ack = mn10300_ipi_ack,
+ .eoi = mn10300_ipi_nop
+};
+
+static irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id);
+static irqreturn_t smp_call_function_interrupt(int irq, void *dev_id);
+static irqreturn_t smp_ipi_timer_interrupt(int irq, void *dev_id);
+
+static struct irqaction reschedule_ipi = {
+ .handler = smp_reschedule_interrupt,
+ .name = "smp reschedule IPI"
+};
+static struct irqaction call_function_ipi = {
+ .handler = smp_call_function_interrupt,
+ .name = "smp call function IPI"
+};
+static struct irqaction local_timer_ipi = {
+ .handler = smp_ipi_timer_interrupt,
+ .flags = IRQF_DISABLED,
+ .name = "smp local timer IPI"
+};
+
+/**
+ * init_ipi - Initialise the IPI mechanism
+ */
+static void init_ipi(void)
+{
+ unsigned long flags;
+ u16 tmp16;
+
+ /* set up the reschedule IPI */
+ set_irq_chip_and_handler(RESCHEDULE_IPI,
+ &mn10300_ipi_type, handle_percpu_irq);
+ setup_irq(RESCHEDULE_IPI, &reschedule_ipi);
+ set_intr_level(RESCHEDULE_IPI, RESCHEDULE_GxICR_LV);
+ mn10300_ipi_enable(RESCHEDULE_IPI);
+
+ /* set up the call function IPI */
+ set_irq_chip_and_handler(CALL_FUNC_SINGLE_IPI,
+ &mn10300_ipi_type, handle_percpu_irq);
+ setup_irq(CALL_FUNC_SINGLE_IPI, &call_function_ipi);
+ set_intr_level(CALL_FUNC_SINGLE_IPI, CALL_FUNCTION_GxICR_LV);
+ mn10300_ipi_enable(CALL_FUNC_SINGLE_IPI);
+
+ /* set up the local timer IPI */
+ set_irq_chip_and_handler(LOCAL_TIMER_IPI,
+ &mn10300_ipi_type, handle_percpu_irq);
+ setup_irq(LOCAL_TIMER_IPI, &local_timer_ipi);
+ set_intr_level(LOCAL_TIMER_IPI, LOCAL_TIMER_GxICR_LV);
+ mn10300_ipi_enable(LOCAL_TIMER_IPI);
+
+#ifdef CONFIG_MN10300_CACHE_ENABLED
+ /* set up the cache flush IPI */
+ flags = arch_local_cli_save();
+ __set_intr_stub(NUM2EXCEP_IRQ_LEVEL(FLUSH_CACHE_GxICR_LV),
+ mn10300_low_ipi_handler);
+ GxICR(FLUSH_CACHE_IPI) = FLUSH_CACHE_GxICR_LV | GxICR_DETECT;
+ mn10300_ipi_enable(FLUSH_CACHE_IPI);
+ arch_local_irq_restore(flags);
+#endif
+
+ /* set up the NMI call function IPI */
+ flags = arch_local_cli_save();
+ GxICR(CALL_FUNCTION_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT;
+ tmp16 = GxICR(CALL_FUNCTION_NMI_IPI);
+ arch_local_irq_restore(flags);
+
+ /* set up the SMP boot IPI */
+ flags = arch_local_cli_save();
+ __set_intr_stub(NUM2EXCEP_IRQ_LEVEL(SMP_BOOT_GxICR_LV),
+ mn10300_low_ipi_handler);
+ arch_local_irq_restore(flags);
+}
+
+/**
+ * mn10300_ipi_shutdown - Shut down handling of an IPI
+ * @irq: The IPI to be shut down.
+ */
+static void mn10300_ipi_shutdown(unsigned int irq)
+{
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_DETECT;
+ tmp = GxICR(irq);
+
+ arch_local_irq_restore(flags);
+}
+
+/**
+ * mn10300_ipi_enable - Enable an IPI
+ * @irq: The IPI to be enabled.
+ */
+static void mn10300_ipi_enable(unsigned int irq)
+{
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE;
+ tmp = GxICR(irq);
+
+ arch_local_irq_restore(flags);
+}
+
+/**
+ * mn10300_ipi_disable - Disable an IPI
+ * @irq: The IPI to be disabled.
+ */
+static void mn10300_ipi_disable(unsigned int irq)
+{
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+
+ tmp = GxICR(irq);
+ GxICR(irq) = tmp & GxICR_LEVEL;
+ tmp = GxICR(irq);
+
+ arch_local_irq_restore(flags);
+}
+
+/**
+ * mn10300_ipi_ack - Acknowledge an IPI interrupt in the PIC
+ * @irq: The IPI to be acknowledged.
+ *
+ * Clear the interrupt detection flag for the IPI on the appropriate interrupt
+ * channel in the PIC.
+ */
+static void mn10300_ipi_ack(unsigned int irq)
+{
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+ GxICR_u8(irq) = GxICR_DETECT;
+ tmp = GxICR(irq);
+ arch_local_irq_restore(flags);
+}
+
+/**
+ * mn10300_ipi_nop - Dummy IPI action
+ * @irq: The IPI to be acted upon.
+ */
+static void mn10300_ipi_nop(unsigned int irq)
+{
+}
+
+/**
+ * send_IPI_mask - Send IPIs to all CPUs in list
+ * @cpumask: The list of CPUs to target.
+ * @irq: The IPI request to be sent.
+ *
+ * Send the specified IPI to all the CPUs in the list, not waiting for them to
+ * finish before returning. The caller is responsible for synchronisation if
+ * that is needed.
+ */
+static void send_IPI_mask(const cpumask_t *cpumask, int irq)
+{
+ int i;
+ u16 tmp;
+
+ for (i = 0; i < NR_CPUS; i++) {
+ if (cpu_isset(i, *cpumask)) {
+ /* send IPI */
+ tmp = CROSS_GxICR(irq, i);
+ CROSS_GxICR(irq, i) =
+ tmp | GxICR_REQUEST | GxICR_DETECT;
+ tmp = CROSS_GxICR(irq, i); /* flush write buffer */
+ }
+ }
+}
+
+/**
+ * send_IPI_self - Send an IPI to this CPU.
+ * @irq: The IPI request to be sent.
+ *
+ * Send the specified IPI to the current CPU.
+ */
+void send_IPI_self(int irq)
+{
+ send_IPI_mask(cpumask_of(smp_processor_id()), irq);
+}
+
+/**
+ * send_IPI_allbutself - Send IPIs to all the other CPUs.
+ * @irq: The IPI request to be sent.
+ *
+ * Send the specified IPI to all CPUs in the system barring the current one,
+ * not waiting for them to finish before returning. The caller is responsible
+ * for synchronisation if that is needed.
+ */
+void send_IPI_allbutself(int irq)
+{
+ cpumask_t cpumask;
+
+ cpumask = cpu_online_map;
+ cpu_clear(smp_processor_id(), cpumask);
+ send_IPI_mask(&cpumask, irq);
+}
+
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
+{
+ BUG();
+ /*send_IPI_mask(mask, CALL_FUNCTION_IPI);*/
+}
+
+void arch_send_call_function_single_ipi(int cpu)
+{
+ send_IPI_mask(cpumask_of(cpu), CALL_FUNC_SINGLE_IPI);
+}
+
+/**
+ * smp_send_reschedule - Send reschedule IPI to a CPU
+ * @cpu: The CPU to target.
+ */
+void smp_send_reschedule(int cpu)
+{
+ send_IPI_mask(cpumask_of(cpu), RESCHEDULE_IPI);
+}
+
+/**
+ * smp_nmi_call_function - Send a call function NMI IPI to all CPUs
+ * @func: The function to ask to be run.
+ * @info: The context data to pass to that function.
+ * @wait: If true, wait (atomically) until function is run on all CPUs.
+ *
+ * Send a non-maskable request to all CPUs in the system, requesting them to
+ * run the specified function with the given context data, and, potentially, to
+ * wait for completion of that function on all CPUs.
+ *
+ * Returns 0 if successful, -ETIMEDOUT if we were asked to wait, but hit the
+ * timeout.
+ */
+int smp_nmi_call_function(smp_call_func_t func, void *info, int wait)
+{
+ struct nmi_call_data_struct data;
+ unsigned long flags;
+ unsigned int cnt;
+ int cpus, ret = 0;
+
+ cpus = num_online_cpus() - 1;
+ if (cpus < 1)
+ return 0;
+
+ data.func = func;
+ data.info = info;
+ data.started = cpu_online_map;
+ cpu_clear(smp_processor_id(), data.started);
+ data.wait = wait;
+ if (wait)
+ data.finished = data.started;
+
+ spin_lock_irqsave(&smp_nmi_call_lock, flags);
+ nmi_call_data = &data;
+ smp_mb();
+
+ /* Send a message to all other CPUs and wait for them to respond */
+ send_IPI_allbutself(CALL_FUNCTION_NMI_IPI);
+
+ /* Wait for response */
+ if (CALL_FUNCTION_NMI_IPI_TIMEOUT > 0) {
+ for (cnt = 0;
+ cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT &&
+ !cpus_empty(data.started);
+ cnt++)
+ mdelay(1);
+
+ if (wait && cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT) {
+ for (cnt = 0;
+ cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT &&
+ !cpus_empty(data.finished);
+ cnt++)
+ mdelay(1);
+ }
+
+ if (cnt >= CALL_FUNCTION_NMI_IPI_TIMEOUT)
+ ret = -ETIMEDOUT;
+
+ } else {
+ /* If timeout value is zero, wait until cpumask has been
+ * cleared */
+ while (!cpus_empty(data.started))
+ barrier();
+ if (wait)
+ while (!cpus_empty(data.finished))
+ barrier();
+ }
+
+ spin_unlock_irqrestore(&smp_nmi_call_lock, flags);
+ return ret;
+}
+
+/**
+ * stop_this_cpu - Callback to stop a CPU.
+ * @unused: Callback context (ignored).
+ */
+void stop_this_cpu(void *unused)
+{
+ static volatile int stopflag;
+ unsigned long flags;
+
+#ifdef CONFIG_GDBSTUB
+ /* In case of single stepping smp_send_stop by other CPU,
+ * clear procindebug to avoid deadlock.
+ */
+ atomic_set(&procindebug[smp_processor_id()], 0);
+#endif /* CONFIG_GDBSTUB */
+
+ flags = arch_local_cli_save();
+ cpu_clear(smp_processor_id(), cpu_online_map);
+
+ while (!stopflag)
+ cpu_relax();
+
+ cpu_set(smp_processor_id(), cpu_online_map);
+ arch_local_irq_restore(flags);
+}
+
+/**
+ * smp_send_stop - Send a stop request to all CPUs.
+ */
+void smp_send_stop(void)
+{
+ smp_nmi_call_function(stop_this_cpu, NULL, 0);
+}
+
+/**
+ * smp_reschedule_interrupt - Reschedule IPI handler
+ * @irq: The interrupt number.
+ * @dev_id: The device ID.
+ *
+ * We need do nothing here, since the scheduling will be effected on our way
+ * back through entry.S.
+ *
+ * Returns IRQ_HANDLED to indicate we handled the interrupt successfully.
+ */
+static irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id)
+{
+ /* do nothing */
+ return IRQ_HANDLED;
+}
+
+/**
+ * smp_call_function_interrupt - Call function IPI handler
+ * @irq: The interrupt number.
+ * @dev_id: The device ID.
+ *
+ * Returns IRQ_HANDLED to indicate we handled the interrupt successfully.
+ */
+static irqreturn_t smp_call_function_interrupt(int irq, void *dev_id)
+{
+ /* generic_smp_call_function_interrupt(); */
+ generic_smp_call_function_single_interrupt();
+ return IRQ_HANDLED;
+}
+
+/**
+ * smp_nmi_call_function_interrupt - Non-maskable call function IPI handler
+ */
+void smp_nmi_call_function_interrupt(void)
+{
+ smp_call_func_t func = nmi_call_data->func;
+ void *info = nmi_call_data->info;
+ int wait = nmi_call_data->wait;
+
+ /* Notify the initiating CPU that I've grabbed the data and am about to
+ * execute the function
+ */
+ smp_mb();
+ cpu_clear(smp_processor_id(), nmi_call_data->started);
+ (*func)(info);
+
+ if (wait) {
+ smp_mb();
+ cpu_clear(smp_processor_id(), nmi_call_data->finished);
+ }
+}
+
+/**
+ * smp_ipi_timer_interrupt - Local timer IPI handler
+ * @irq: The interrupt number.
+ * @dev_id: The device ID.
+ *
+ * Returns IRQ_HANDLED to indicate we handled the interrupt successfully.
+ */
+static irqreturn_t smp_ipi_timer_interrupt(int irq, void *dev_id)
+{
+ return local_timer_interrupt();
+}
+
+void __init smp_init_cpus(void)
+{
+ int i;
+ for (i = 0; i < NR_CPUS; i++) {
+ set_cpu_possible(i, true);
+ set_cpu_present(i, true);
+ }
+}
+
+/**
+ * smp_cpu_init - Initialise AP in start_secondary.
+ *
+ * For this Application Processor, set up init_mm, initialise FPU and set
+ * interrupt level 0-6 setting.
+ */
+static void __init smp_cpu_init(void)
+{
+ unsigned long flags;
+ int cpu_id = smp_processor_id();
+ u16 tmp16;
+
+ if (test_and_set_bit(cpu_id, &cpu_initialized)) {
+ printk(KERN_WARNING "CPU#%d already initialized!\n", cpu_id);
+ for (;;)
+ local_irq_enable();
+ }
+ printk(KERN_INFO "Initializing CPU#%d\n", cpu_id);
+
+ atomic_inc(&init_mm.mm_count);
+ current->active_mm = &init_mm;
+ BUG_ON(current->mm);
+
+ enter_lazy_tlb(&init_mm, current);
+
+ /* Force FPU initialization */
+ clear_using_fpu(current);
+
+ GxICR(CALL_FUNC_SINGLE_IPI) = CALL_FUNCTION_GxICR_LV | GxICR_DETECT;
+ mn10300_ipi_enable(CALL_FUNC_SINGLE_IPI);
+
+ GxICR(LOCAL_TIMER_IPI) = LOCAL_TIMER_GxICR_LV | GxICR_DETECT;
+ mn10300_ipi_enable(LOCAL_TIMER_IPI);
+
+ GxICR(RESCHEDULE_IPI) = RESCHEDULE_GxICR_LV | GxICR_DETECT;
+ mn10300_ipi_enable(RESCHEDULE_IPI);
+
+#ifdef CONFIG_MN10300_CACHE_ENABLED
+ GxICR(FLUSH_CACHE_IPI) = FLUSH_CACHE_GxICR_LV | GxICR_DETECT;
+ mn10300_ipi_enable(FLUSH_CACHE_IPI);
+#endif
+
+ mn10300_ipi_shutdown(SMP_BOOT_IRQ);
+
+ /* Set up the non-maskable call function IPI */
+ flags = arch_local_cli_save();
+ GxICR(CALL_FUNCTION_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT;
+ tmp16 = GxICR(CALL_FUNCTION_NMI_IPI);
+ arch_local_irq_restore(flags);
+}
+
+/**
+ * smp_prepare_cpu_init - Initialise CPU in startup_secondary
+ *
+ * Set interrupt level 0-6 setting and init ICR of gdbstub.
+ */
+void smp_prepare_cpu_init(void)
+{
+ int loop;
+
+ /* Set the interrupt vector registers */
+ IVAR0 = EXCEP_IRQ_LEVEL0;
+ IVAR1 = EXCEP_IRQ_LEVEL1;
+ IVAR2 = EXCEP_IRQ_LEVEL2;
+ IVAR3 = EXCEP_IRQ_LEVEL3;
+ IVAR4 = EXCEP_IRQ_LEVEL4;
+ IVAR5 = EXCEP_IRQ_LEVEL5;
+ IVAR6 = EXCEP_IRQ_LEVEL6;
+
+ /* Disable all interrupts and set to priority 6 (lowest) */
+ for (loop = 0; loop < GxICR_NUM_IRQS; loop++)
+ GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT;
+
+#ifdef CONFIG_GDBSTUB
+ /* initialise GDB-stub */
+ do {
+ unsigned long flags;
+ u16 tmp16;
+
+ flags = arch_local_cli_save();
+ GxICR(GDB_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT;
+ tmp16 = GxICR(GDB_NMI_IPI);
+ arch_local_irq_restore(flags);
+ } while (0);
+#endif
+}
+
+/**
+ * start_secondary - Activate a secondary CPU (AP)
+ * @unused: Thread parameter (ignored).
+ */
+int __init start_secondary(void *unused)
+{
+ smp_cpu_init();
+
+ smp_callin();
+ while (!cpu_isset(smp_processor_id(), smp_commenced_mask))
+ cpu_relax();
+
+ local_flush_tlb();
+ preempt_disable();
+ smp_online();
+
+ cpu_idle();
+ return 0;
+}
+
+/**
+ * smp_prepare_cpus - Boot up secondary CPUs (APs)
+ * @max_cpus: Maximum number of CPUs to boot.
+ *
+ * Call do_boot_cpu, and boot up APs.
+ */
+void __init smp_prepare_cpus(unsigned int max_cpus)
+{
+ int phy_id;
+
+ /* Setup boot CPU information */
+ smp_store_cpu_info(0);
+ smp_tune_scheduling();
+
+ init_ipi();
+
+ /* If SMP should be disabled, then finish */
+ if (max_cpus == 0) {
+ printk(KERN_INFO "SMP mode deactivated.\n");
+ goto smp_done;
+ }
+
+ /* Boot secondary CPUs (for which phy_id > 0) */
+ for (phy_id = 0; phy_id < NR_CPUS; phy_id++) {
+ /* Don't boot primary CPU */
+ if (max_cpus <= cpucount + 1)
+ continue;
+ if (phy_id != 0)
+ do_boot_cpu(phy_id);
+ set_cpu_possible(phy_id, true);
+ smp_show_cpu_info(phy_id);
+ }
+
+smp_done:
+ Dprintk("Boot done.\n");
+}
+
+/**
+ * smp_store_cpu_info - Save a CPU's information
+ * @cpu: The CPU to save for.
+ *
+ * Save boot_cpu_data and jiffy for the specified CPU.
+ */
+static void __init smp_store_cpu_info(int cpu)
+{
+ struct mn10300_cpuinfo *ci = &cpu_data[cpu];
+
+ *ci = boot_cpu_data;
+ ci->loops_per_jiffy = loops_per_jiffy;
+ ci->type = CPUREV;
+}
+
+/**
+ * smp_tune_scheduling - Set time slice value
+ *
+ * Nothing to do here.
+ */
+static void __init smp_tune_scheduling(void)
+{
+}
+
+/**
+ * do_boot_cpu: Boot up one CPU
+ * @phy_id: Physical ID of CPU to boot.
+ *
+ * Send an IPI to a secondary CPU to boot it. Returns 0 on success, 1
+ * otherwise.
+ */
+static int __init do_boot_cpu(int phy_id)
+{
+ struct task_struct *idle;
+ unsigned long send_status, callin_status;
+ int timeout, cpu_id;
+
+ send_status = GxICR_REQUEST;
+ callin_status = 0;
+ timeout = 0;
+ cpu_id = phy_id;
+
+ cpucount++;
+
+ /* Create idle thread for this CPU */
+ idle = fork_idle(cpu_id);
+ if (IS_ERR(idle))
+ panic("Failed fork for CPU#%d.", cpu_id);
+
+ idle->thread.pc = (unsigned long)start_secondary;
+
+ printk(KERN_NOTICE "Booting CPU#%d\n", cpu_id);
+ start_stack[cpu_id - 1] = idle->thread.sp;
+
+ task_thread_info(idle)->cpu = cpu_id;
+
+ /* Send boot IPI to AP */
+ send_IPI_mask(cpumask_of(phy_id), SMP_BOOT_IRQ);
+
+ Dprintk("Waiting for send to finish...\n");
+
+ /* Wait for AP's IPI receive in 100[ms] */
+ do {
+ udelay(1000);
+ send_status =
+ CROSS_GxICR(SMP_BOOT_IRQ, phy_id) & GxICR_REQUEST;
+ } while (send_status == GxICR_REQUEST && timeout++ < 100);
+
+ Dprintk("Waiting for cpu_callin_map.\n");
+
+ if (send_status == 0) {
+ /* Allow AP to start initializing */
+ cpu_set(cpu_id, cpu_callout_map);
+
+ /* Wait for setting cpu_callin_map */
+ timeout = 0;
+ do {
+ udelay(1000);
+ callin_status = cpu_isset(cpu_id, cpu_callin_map);
+ } while (callin_status == 0 && timeout++ < 5000);
+
+ if (callin_status == 0)
+ Dprintk("Not responding.\n");
+ } else {
+ printk(KERN_WARNING "IPI not delivered.\n");
+ }
+
+ if (send_status == GxICR_REQUEST || callin_status == 0) {
+ cpu_clear(cpu_id, cpu_callout_map);
+ cpu_clear(cpu_id, cpu_callin_map);
+ cpu_clear(cpu_id, cpu_initialized);
+ cpucount--;
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * smp_show_cpu_info - Show SMP CPU information
+ * @cpu: The CPU of interest.
+ */
+static void __init smp_show_cpu_info(int cpu)
+{
+ struct mn10300_cpuinfo *ci = &cpu_data[cpu];
+
+ printk(KERN_INFO
+ "CPU#%d : ioclk speed: %lu.%02luMHz : bogomips : %lu.%02lu\n",
+ cpu,
+ MN10300_IOCLK / 1000000,
+ (MN10300_IOCLK / 10000) % 100,
+ ci->loops_per_jiffy / (500000 / HZ),
+ (ci->loops_per_jiffy / (5000 / HZ)) % 100);
+}
+
+/**
+ * smp_callin - Set cpu_callin_map of the current CPU ID
+ */
+static void __init smp_callin(void)
+{
+ unsigned long timeout;
+ int cpu;
+
+ cpu = smp_processor_id();
+ timeout = jiffies + (2 * HZ);
+
+ if (cpu_isset(cpu, cpu_callin_map)) {
+ printk(KERN_ERR "CPU#%d already present.\n", cpu);
+ BUG();
+ }
+ Dprintk("CPU#%d waiting for CALLOUT\n", cpu);
+
+ /* Wait for AP startup 2s total */
+ while (time_before(jiffies, timeout)) {
+ if (cpu_isset(cpu, cpu_callout_map))
+ break;
+ cpu_relax();
+ }
+
+ if (!time_before(jiffies, timeout)) {
+ printk(KERN_ERR
+ "BUG: CPU#%d started up but did not get a callout!\n",
+ cpu);
+ BUG();
+ }
+
+#ifdef CONFIG_CALIBRATE_DELAY
+ calibrate_delay(); /* Get our bogomips */
+#endif
+
+ /* Save our processor parameters */
+ smp_store_cpu_info(cpu);
+
+ /* Allow the boot processor to continue */
+ cpu_set(cpu, cpu_callin_map);
+}
+
+/**
+ * smp_online - Set cpu_online_map
+ */
+static void __init smp_online(void)
+{
+ int cpu;
+
+ cpu = smp_processor_id();
+
+ local_irq_enable();
+
+ cpu_set(cpu, cpu_online_map);
+ smp_wmb();
+}
+
+/**
+ * smp_cpus_done -
+ * @max_cpus: Maximum CPU count.
+ *
+ * Do nothing.
+ */
+void __init smp_cpus_done(unsigned int max_cpus)
+{
+}
+
+/*
+ * smp_prepare_boot_cpu - Set up stuff for the boot processor.
+ *
+ * Set up the cpu_online_map, cpu_callout_map and cpu_callin_map of the boot
+ * processor (CPU 0).
+ */
+void __devinit smp_prepare_boot_cpu(void)
+{
+ cpu_set(0, cpu_callout_map);
+ cpu_set(0, cpu_callin_map);
+ current_thread_info()->cpu = 0;
+}
+
+/*
+ * initialize_secondary - Initialise a secondary CPU (Application Processor).
+ *
+ * Set SP register and jump to thread's PC address.
+ */
+void initialize_secondary(void)
+{
+ asm volatile (
+ "mov %0,sp \n"
+ "jmp (%1) \n"
+ :
+ : "a"(current->thread.sp), "a"(current->thread.pc));
+}
+
+/**
+ * __cpu_up - Set smp_commenced_mask for the nominated CPU
+ * @cpu: The target CPU.
+ */
+int __devinit __cpu_up(unsigned int cpu)
+{
+ int timeout;
+
+#ifdef CONFIG_HOTPLUG_CPU
+ if (num_online_cpus() == 1)
+ disable_hlt();
+ if (sleep_mode[cpu])
+ run_wakeup_cpu(cpu);
+#endif /* CONFIG_HOTPLUG_CPU */
+
+ cpu_set(cpu, smp_commenced_mask);
+
+ /* Wait 5s total for a response */
+ for (timeout = 0 ; timeout < 5000 ; timeout++) {
+ if (cpu_isset(cpu, cpu_online_map))
+ break;
+ udelay(1000);
+ }
+
+ BUG_ON(!cpu_isset(cpu, cpu_online_map));
+ return 0;
+}
+
+/**
+ * setup_profiling_timer - Set up the profiling timer
+ * @multiplier - The frequency multiplier to use
+ *
+ * The frequency of the profiling timer can be changed by writing a multiplier
+ * value into /proc/profile.
+ */
+int setup_profiling_timer(unsigned int multiplier)
+{
+ return -EINVAL;
+}
+
+/*
+ * CPU hotplug routines
+ */
+#ifdef CONFIG_HOTPLUG_CPU
+
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+ int cpu, ret;
+
+ for_each_cpu(cpu) {
+ ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
+ if (ret)
+ printk(KERN_WARNING
+ "topology_init: register_cpu %d failed (%d)\n",
+ cpu, ret);
+ }
+ return 0;
+}
+
+subsys_initcall(topology_init);
+
+int __cpu_disable(void)
+{
+ int cpu = smp_processor_id();
+ if (cpu == 0)
+ return -EBUSY;
+
+ migrate_irqs();
+ cpu_clear(cpu, current->active_mm->cpu_vm_mask);
+ return 0;
+}
+
+void __cpu_die(unsigned int cpu)
+{
+ run_sleep_cpu(cpu);
+
+ if (num_online_cpus() == 1)
+ enable_hlt();
+}
+
+#ifdef CONFIG_MN10300_CACHE_ENABLED
+static inline void hotplug_cpu_disable_cache(void)
+{
+ int tmp;
+ asm volatile(
+ " movhu (%1),%0 \n"
+ " and %2,%0 \n"
+ " movhu %0,(%1) \n"
+ "1: movhu (%1),%0 \n"
+ " btst %3,%0 \n"
+ " bne 1b \n"
+ : "=&r"(tmp)
+ : "a"(&CHCTR),
+ "i"(~(CHCTR_ICEN | CHCTR_DCEN)),
+ "i"(CHCTR_ICBUSY | CHCTR_DCBUSY)
+ : "memory", "cc");
+}
+
+static inline void hotplug_cpu_enable_cache(void)
+{
+ int tmp;
+ asm volatile(
+ "movhu (%1),%0 \n"
+ "or %2,%0 \n"
+ "movhu %0,(%1) \n"
+ : "=&r"(tmp)
+ : "a"(&CHCTR),
+ "i"(CHCTR_ICEN | CHCTR_DCEN)
+ : "memory", "cc");
+}
+
+static inline void hotplug_cpu_invalidate_cache(void)
+{
+ int tmp;
+ asm volatile (
+ "movhu (%1),%0 \n"
+ "or %2,%0 \n"
+ "movhu %0,(%1) \n"
+ : "=&r"(tmp)
+ : "a"(&CHCTR),
+ "i"(CHCTR_ICINV | CHCTR_DCINV)
+ : "cc");
+}
+
+#else /* CONFIG_MN10300_CACHE_ENABLED */
+#define hotplug_cpu_disable_cache() do {} while (0)
+#define hotplug_cpu_enable_cache() do {} while (0)
+#define hotplug_cpu_invalidate_cache() do {} while (0)
+#endif /* CONFIG_MN10300_CACHE_ENABLED */
+
+/**
+ * hotplug_cpu_nmi_call_function - Call a function on other CPUs for hotplug
+ * @cpumask: List of target CPUs.
+ * @func: The function to call on those CPUs.
+ * @info: The context data for the function to be called.
+ * @wait: Whether to wait for the calls to complete.
+ *
+ * Non-maskably call a function on another CPU for hotplug purposes.
+ *
+ * This function must be called with maskable interrupts disabled.
+ */
+static int hotplug_cpu_nmi_call_function(cpumask_t cpumask,
+ smp_call_func_t func, void *info,
+ int wait)
+{
+ /*
+ * The address and the size of nmi_call_func_mask_data
+ * need to be aligned on L1_CACHE_BYTES.
+ */
+ static struct nmi_call_data_struct nmi_call_func_mask_data
+ __cacheline_aligned;
+ unsigned long start, end;
+
+ start = (unsigned long)&nmi_call_func_mask_data;
+ end = start + sizeof(struct nmi_call_data_struct);
+
+ nmi_call_func_mask_data.func = func;
+ nmi_call_func_mask_data.info = info;
+ nmi_call_func_mask_data.started = cpumask;
+ nmi_call_func_mask_data.wait = wait;
+ if (wait)
+ nmi_call_func_mask_data.finished = cpumask;
+
+ spin_lock(&smp_nmi_call_lock);
+ nmi_call_data = &nmi_call_func_mask_data;
+ mn10300_local_dcache_flush_range(start, end);
+ smp_wmb();
+
+ send_IPI_mask(cpumask, CALL_FUNCTION_NMI_IPI);
+
+ do {
+ mn10300_local_dcache_inv_range(start, end);
+ barrier();
+ } while (!cpus_empty(nmi_call_func_mask_data.started));
+
+ if (wait) {
+ do {
+ mn10300_local_dcache_inv_range(start, end);
+ barrier();
+ } while (!cpus_empty(nmi_call_func_mask_data.finished));
+ }
+
+ spin_unlock(&smp_nmi_call_lock);
+ return 0;
+}
+
+static void restart_wakeup_cpu(void)
+{
+ unsigned int cpu = smp_processor_id();
+
+ cpu_set(cpu, cpu_callin_map);
+ local_flush_tlb();
+ cpu_set(cpu, cpu_online_map);
+ smp_wmb();
+}
+
+static void prepare_sleep_cpu(void *unused)
+{
+ sleep_mode[smp_processor_id()] = 1;
+ smp_mb();
+ mn10300_local_dcache_flush_inv();
+ hotplug_cpu_disable_cache();
+ hotplug_cpu_invalidate_cache();
+}
+
+/* when this function called, IE=0, NMID=0. */
+static void sleep_cpu(void *unused)
+{
+ unsigned int cpu_id = smp_processor_id();
+ /*
+ * CALL_FUNCTION_NMI_IPI for wakeup_cpu() shall not be requested,
+ * before this cpu goes in SLEEP mode.
+ */
+ do {
+ smp_mb();
+ __sleep_cpu();
+ } while (sleep_mode[cpu_id]);
+ restart_wakeup_cpu();
+}
+
+static void run_sleep_cpu(unsigned int cpu)
+{
+ unsigned long flags;
+ cpumask_t cpumask = cpumask_of(cpu);
+
+ flags = arch_local_cli_save();
+ hotplug_cpu_nmi_call_function(cpumask, prepare_sleep_cpu, NULL, 1);
+ hotplug_cpu_nmi_call_function(cpumask, sleep_cpu, NULL, 0);
+ udelay(1); /* delay for the cpu to sleep. */
+ arch_local_irq_restore(flags);
+}
+
+static void wakeup_cpu(void)
+{
+ hotplug_cpu_invalidate_cache();
+ hotplug_cpu_enable_cache();
+ smp_mb();
+ sleep_mode[smp_processor_id()] = 0;
+}
+
+static void run_wakeup_cpu(unsigned int cpu)
+{
+ unsigned long flags;
+
+ flags = arch_local_cli_save();
+#if NR_CPUS == 2
+ mn10300_local_dcache_flush_inv();
+#else
+ /*
+ * Before waking up the cpu,
+ * all online cpus should stop and flush D-Cache for global data.
+ */
+#error not support NR_CPUS > 2, when CONFIG_HOTPLUG_CPU=y.
+#endif
+ hotplug_cpu_nmi_call_function(cpumask_of(cpu), wakeup_cpu, NULL, 1);
+ arch_local_irq_restore(flags);
+}
+
+#endif /* CONFIG_HOTPLUG_CPU */
diff --git a/arch/mn10300/kernel/switch_to.S b/arch/mn10300/kernel/switch_to.S
index 630aad7..b08cb2e 100644
--- a/arch/mn10300/kernel/switch_to.S
+++ b/arch/mn10300/kernel/switch_to.S
@@ -15,6 +15,9 @@
#include <linux/linkage.h>
#include <asm/thread_info.h>
#include <asm/cpu-regs.h>
+#ifdef CONFIG_SMP
+#include <proc/smp-regs.h>
+#endif /* CONFIG_SMP */
.text
@@ -35,7 +38,14 @@ ENTRY(__switch_to)
mov d1,a1
# save prev context
+#ifdef CONFIG_SMP
+ mov (CPUID),a2
+ add a2,a2
+ add a2,a2
+ mov (___frame,a2),d0
+#else /* CONFIG_SMP */
mov (__frame),d0
+#endif /* CONFIG_SMP */
mov d0,(THREAD_FRAME,a0)
mov __switch_back,d0
mov d0,(THREAD_PC,a0)
@@ -59,7 +69,14 @@ ENTRY(__switch_to)
#endif
mov (THREAD_FRAME,a1),a2
+#ifdef CONFIG_SMP
+ mov (CPUID),a0
+ add a0,a0
+ add a0,a0
+ mov a2,(___frame,a0)
+#else /* CONFIG_SMP */
mov a2,(__frame)
+#endif /* CONFIG_SMP */
mov (THREAD_PC,a1),a2
mov d2,d0 # for ret_from_fork
mov d0,a0 # for __switch_to
diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c
index 0b5c856..0cb9bdb 100644
--- a/arch/mn10300/kernel/time.c
+++ b/arch/mn10300/kernel/time.c
@@ -22,12 +22,7 @@
#include <asm/processor.h>
#include <asm/intctl-regs.h>
#include <asm/rtc.h>
-
-#ifdef CONFIG_MN10300_RTC
-unsigned long mn10300_ioclk; /* system I/O clock frequency */
-unsigned long mn10300_iobclk; /* system I/O clock frequency */
-unsigned long mn10300_tsc_per_HZ; /* number of ioclks per jiffy */
-#endif /* CONFIG_MN10300_RTC */
+#include "internal.h"
static unsigned long mn10300_last_tsc; /* time-stamp counter at last time
* interrupt occurred */
@@ -95,6 +90,19 @@ static void __init mn10300_sched_clock_init(void)
__muldiv64u(NSEC_PER_SEC, 1 << 16, MN10300_TSCCLK);
}
+/**
+ * local_timer_interrupt - Local timer interrupt handler
+ *
+ * Handle local timer interrupts for this CPU. They may have been propagated
+ * to this CPU from the CPU that actually gets them by way of an IPI.
+ */
+irqreturn_t local_timer_interrupt(void)
+{
+ profile_tick(CPU_PROFILING);
+ update_process_times(user_mode(get_irq_regs()));
+ return IRQ_HANDLED;
+}
+
/*
* advance the kernel's time keeping clocks (xtime and jiffies)
* - we use Timer 0 & 1 cascaded as a clock to nudge us the next time
@@ -103,6 +111,7 @@ static void __init mn10300_sched_clock_init(void)
static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
unsigned tsc, elapse;
+ irqreturn_t ret;
write_seqlock(&xtime_lock);
@@ -114,15 +123,16 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
mn10300_last_tsc -= MN10300_TSC_PER_HZ;
/* advance the kernel's time tracking system */
- profile_tick(CPU_PROFILING);
do_timer(1);
}
write_sequnlock(&xtime_lock);
- update_process_times(user_mode(get_irq_regs()));
-
- return IRQ_HANDLED;
+ ret = local_timer_interrupt();
+#ifdef CONFIG_SMP
+ send_IPI_allbutself(LOCAL_TIMER_IPI);
+#endif
+ return ret;
}
/*
@@ -148,7 +158,7 @@ void __init time_init(void)
/* use timer 0 & 1 cascaded to tick at as close to HZ as possible */
setup_irq(TMJCIRQ, &timer_irq);
- set_intr_level(TMJCIRQ, TMJCICR_LEVEL);
+ set_intr_level(TMJCIRQ, NUM2GxICR_LEVEL(CONFIG_TIMER_IRQ_LEVEL));
startup_jiffies_counter();
diff --git a/arch/mn10300/kernel/traps.c b/arch/mn10300/kernel/traps.c
index 716a221..c924a1d 100644
--- a/arch/mn10300/kernel/traps.c
+++ b/arch/mn10300/kernel/traps.c
@@ -45,8 +45,13 @@
#error "INTERRUPT_VECTOR_BASE not aligned to 16MiB boundary!"
#endif
+#ifdef CONFIG_SMP
+struct pt_regs *___frame[NR_CPUS]; /* current frame pointer */
+EXPORT_SYMBOL(___frame);
+#else /* CONFIG_SMP */
struct pt_regs *__frame; /* current frame pointer */
EXPORT_SYMBOL(__frame);
+#endif /* CONFIG_SMP */
int kstack_depth_to_print = 24;
@@ -221,11 +226,14 @@ void show_registers_only(struct pt_regs *regs)
printk(KERN_EMERG "threadinfo=%p task=%p)\n",
current_thread_info(), current);
- if ((unsigned long) current >= 0x90000000UL &&
- (unsigned long) current < 0x94000000UL)
+ if ((unsigned long) current >= PAGE_OFFSET &&
+ (unsigned long) current < (unsigned long)high_memory)
printk(KERN_EMERG "Process %s (pid: %d)\n",
current->comm, current->pid);
+#ifdef CONFIG_SMP
+ printk(KERN_EMERG "CPUID: %08x\n", CPUID);
+#endif
printk(KERN_EMERG "CPUP: %04hx\n", CPUP);
printk(KERN_EMERG "TBR: %08x\n", TBR);
printk(KERN_EMERG "DEAR: %08x\n", DEAR);
@@ -521,8 +529,12 @@ void __init set_intr_stub(enum exception_code code, void *handler)
{
unsigned long addr;
u8 *vector = (u8 *)(CONFIG_INTERRUPT_VECTOR_BASE + code);
+ unsigned long flags;
addr = (unsigned long) handler - (unsigned long) vector;
+
+ flags = arch_local_cli_save();
+
vector[0] = 0xdc; /* JMP handler */
vector[1] = addr;
vector[2] = addr >> 8;
@@ -532,6 +544,8 @@ void __init set_intr_stub(enum exception_code code, void *handler)
vector[6] = 0xcb;
vector[7] = 0xcb;
+ arch_local_irq_restore(flags);
+
#ifndef CONFIG_MN10300_CACHE_SNOOP
mn10300_dcache_flush_inv();
mn10300_icache_inv();
diff --git a/arch/mn10300/lib/delay.c b/arch/mn10300/lib/delay.c
index fdf6f71..8e7ceb8 100644
--- a/arch/mn10300/lib/delay.c
+++ b/arch/mn10300/lib/delay.c
@@ -38,14 +38,14 @@ EXPORT_SYMBOL(__delay);
*/
void __udelay(unsigned long usecs)
{
- signed long ioclk, stop;
+ unsigned long start, stop, cnt;
/* usecs * CLK / 1E6 */
stop = __muldiv64u(usecs, MN10300_TSCCLK, 1000000);
- stop = TMTSCBC - stop;
+ start = TMTSCBC;
do {
- ioclk = TMTSCBC;
- } while (stop < ioclk);
+ cnt = start - TMTSCBC;
+ } while (cnt < stop);
}
EXPORT_SYMBOL(__udelay);
diff --git a/arch/mn10300/mm/fault.c b/arch/mn10300/mm/fault.c
index 906e4c8..59c3da4 100644
--- a/arch/mn10300/mm/fault.c
+++ b/arch/mn10300/mm/fault.c
@@ -39,10 +39,6 @@ void bust_spinlocks(int yes)
{
if (yes) {
oops_in_progress = 1;
-#ifdef CONFIG_SMP
- /* Many serial drivers do __global_cli() */
- global_irq_lock = 0;
-#endif
} else {
int loglevel_save = console_loglevel;
#ifdef CONFIG_VT
@@ -334,10 +330,10 @@ no_context:
*/
out_of_memory:
up_read(&mm->mmap_sem);
- if ((fault_code & MMUFCR_xFC_ACCESS) != MMUFCR_xFC_ACCESS_USR)
- goto no_context;
- pagefault_out_of_memory();
- return;
+ printk(KERN_ALERT "VM: killing process %s\n", tsk->comm);
+ if ((fault_code & MMUFCR_xFC_ACCESS) == MMUFCR_xFC_ACCESS_USR)
+ do_exit(SIGKILL);
+ goto no_context;
do_sigbus:
up_read(&mm->mmap_sem);
diff --git a/arch/mn10300/proc-mn103e010/include/proc/clock.h b/arch/mn10300/proc-mn103e010/include/proc/clock.h
index aa23e14..704a819 100644
--- a/arch/mn10300/proc-mn103e010/include/proc/clock.h
+++ b/arch/mn10300/proc-mn103e010/include/proc/clock.h
@@ -13,6 +13,4 @@
#include <unit/clock.h>
-#define MN10300_WDCLK MN10300_IOCLK
-
#endif /* _ASM_PROC_CLOCK_H */
diff --git a/arch/mn10300/proc-mn103e010/include/proc/intctl-regs.h b/arch/mn10300/proc-mn103e010/include/proc/intctl-regs.h
new file mode 100644
index 0000000..f537801
--- /dev/null
+++ b/arch/mn10300/proc-mn103e010/include/proc/intctl-regs.h
@@ -0,0 +1,29 @@
+#ifndef _ASM_PROC_INTCTL_REGS_H
+#define _ASM_PROC_INTCTL_REGS_H
+
+#ifndef _ASM_INTCTL_REGS_H
+# error "please don't include this file directly"
+#endif
+
+/* intr acceptance group reg */
+#define IAGR __SYSREG(0xd4000100, u16)
+
+/* group number register */
+#define IAGR_GN 0x00fc
+
+#define __GET_XIRQ_TRIGGER(X, Z) (((Z) >> ((X) * 2)) & 3)
+
+#define __SET_XIRQ_TRIGGER(X, Y, Z) \
+({ \
+ typeof(Z) x = (Z); \
+ x &= ~(3 << ((X) * 2)); \
+ x |= ((Y) & 3) << ((X) * 2); \
+ (Z) = x; \
+})
+
+/* external pin intr spec reg */
+#define EXTMD __SYSREG(0xd4000200, u16)
+#define GET_XIRQ_TRIGGER(X) __GET_XIRQ_TRIGGER(X, EXTMD)
+#define SET_XIRQ_TRIGGER(X, Y) __SET_XIRQ_TRIGGER(X, Y, EXTMD)
+
+#endif /* _ASM_PROC_INTCTL_REGS_H */
diff --git a/arch/mn10300/proc-mn103e010/proc-init.c b/arch/mn10300/proc-mn103e010/proc-init.c
index 0cee787..27b9798 100644
--- a/arch/mn10300/proc-mn103e010/proc-init.c
+++ b/arch/mn10300/proc-mn103e010/proc-init.c
@@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <asm/fpu.h>
#include <asm/rtc.h>
+#include <asm/busctl-regs.h>
/*
* initialise the on-silicon processor peripherals
@@ -75,3 +76,37 @@ asmlinkage void __init processor_init(void)
calibrate_clock();
}
+
+/*
+ * determine the memory size and base from the memory controller regs
+ */
+void __init get_mem_info(unsigned long *mem_base, unsigned long *mem_size)
+{
+ unsigned long base, size;
+
+ *mem_base = 0;
+ *mem_size = 0;
+
+ base = SDBASE(0);
+ if (base & SDBASE_CE) {
+ size = (base & SDBASE_CBAM) << SDBASE_CBAM_SHIFT;
+ size = ~size + 1;
+ base &= SDBASE_CBA;
+
+ printk(KERN_INFO "SDRAM[0]: %luMb @%08lx\n", size >> 20, base);
+ *mem_size += size;
+ *mem_base = base;
+ }
+
+ base = SDBASE(1);
+ if (base & SDBASE_CE) {
+ size = (base & SDBASE_CBAM) << SDBASE_CBAM_SHIFT;
+ size = ~size + 1;
+ base &= SDBASE_CBA;
+
+ printk(KERN_INFO "SDRAM[1]: %luMb @%08lx\n", size >> 20, base);
+ *mem_size += size;
+ if (*mem_base == 0)
+ *mem_base = base;
+ }
+}
diff --git a/arch/mn10300/proc-mn2ws0050/Makefile b/arch/mn10300/proc-mn2ws0050/Makefile
new file mode 100644
index 0000000..d4ca133
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-y := proc-init.o
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
new file mode 100644
index 0000000..cafd7b5
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
@@ -0,0 +1,48 @@
+/* Cache specification
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * Modified by Matsushita Electric Industrial Co., Ltd.
+ * Modifications:
+ * 13-Nov-2006 MEI Add L1_CACHE_SHIFT_MAX definition.
+ * 29-Jul-2008 MEI Add define for MN10300_HAS_AREAPURGE_REG.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _ASM_PROC_CACHE_H
+#define _ASM_PROC_CACHE_H
+
+/*
+ * L1 cache
+ */
+#define L1_CACHE_NWAYS 4 /* number of ways in caches */
+#define L1_CACHE_NENTRIES 128 /* number of entries in each way */
+#define L1_CACHE_BYTES 32 /* bytes per entry */
+#define L1_CACHE_SHIFT 5 /* shift for bytes per entry */
+#define L1_CACHE_WAYDISP 0x1000 /* distance from one way to the next */
+
+#define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */
+#define L1_CACHE_TAG_DIRTY 0x00000008 /* data cache tag dirty bit */
+#define L1_CACHE_TAG_ENTRY 0x00000fe0 /* cache tag entry address mask */
+#define L1_CACHE_TAG_ADDRESS 0xfffff000 /* cache tag line address mask */
+
+/*
+ * specification of the interval between interrupt checking intervals whilst
+ * managing the cache with the interrupts disabled
+ */
+#define MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL 4
+
+/*
+ * The size of range at which it becomes more economical to just flush the
+ * whole cache rather than trying to flush the specified range.
+ */
+#define MN10300_DCACHE_FLUSH_BORDER \
+ +(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)
+#define MN10300_DCACHE_FLUSH_INV_BORDER \
+ +(L1_CACHE_NWAYS * L1_CACHE_NENTRIES * L1_CACHE_BYTES)
+
+#endif /* _ASM_PROC_CACHE_H */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/clock.h b/arch/mn10300/proc-mn2ws0050/include/proc/clock.h
new file mode 100644
index 0000000..fe4c0a4
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/clock.h
@@ -0,0 +1,20 @@
+/* clock.h: proc-specific clocks
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * Modified by Matsushita Electric Industrial Co., Ltd.
+ * Modifications:
+ * 23-Feb-2007 MEI Delete define for watchdog timer.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _ASM_PROC_CLOCK_H
+#define _ASM_PROC_CLOCK_H
+
+#include <unit/clock.h>
+
+#endif /* _ASM_PROC_CLOCK_H */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/dmactl-regs.h b/arch/mn10300/proc-mn2ws0050/include/proc/dmactl-regs.h
new file mode 100644
index 0000000..4c4319e
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/dmactl-regs.h
@@ -0,0 +1,103 @@
+/* MN2WS0050 on-board DMA controller registers
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.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 _ASM_PROC_DMACTL_REGS_H
+#define _ASM_PROC_DMACTL_REGS_H
+
+#include <asm/cpu-regs.h>
+
+#ifdef __KERNEL__
+
+/* DMA registers */
+#define DMxCTR(N) __SYSREG(0xd4005000+(N*0x100), u32) /* control reg */
+#define DMxCTR_BG 0x0000001f /* transfer request source */
+#define DMxCTR_BG_SOFT 0x00000000 /* - software source */
+#define DMxCTR_BG_SC0TX 0x00000002 /* - serial port 0 transmission */
+#define DMxCTR_BG_SC0RX 0x00000003 /* - serial port 0 reception */
+#define DMxCTR_BG_SC1TX 0x00000004 /* - serial port 1 transmission */
+#define DMxCTR_BG_SC1RX 0x00000005 /* - serial port 1 reception */
+#define DMxCTR_BG_SC2TX 0x00000006 /* - serial port 2 transmission */
+#define DMxCTR_BG_SC2RX 0x00000007 /* - serial port 2 reception */
+#define DMxCTR_BG_TM0UFLOW 0x00000008 /* - timer 0 underflow */
+#define DMxCTR_BG_TM1UFLOW 0x00000009 /* - timer 1 underflow */
+#define DMxCTR_BG_TM2UFLOW 0x0000000a /* - timer 2 underflow */
+#define DMxCTR_BG_TM3UFLOW 0x0000000b /* - timer 3 underflow */
+#define DMxCTR_BG_TM6ACMPCAP 0x0000000c /* - timer 6A compare/capture */
+#define DMxCTR_BG_RYBY 0x0000000d /* - NAND Flash RY/BY request source */
+#define DMxCTR_BG_RMC 0x0000000e /* - remote controller output */
+#define DMxCTR_BG_XIRQ12 0x00000011 /* - XIRQ12 pin interrupt source */
+#define DMxCTR_BG_XIRQ13 0x00000012 /* - XIRQ13 pin interrupt source */
+#define DMxCTR_BG_TCK 0x00000014 /* - tick timer underflow */
+#define DMxCTR_BG_SC4TX 0x00000019 /* - serial port4 transmission */
+#define DMxCTR_BG_SC4RX 0x0000001a /* - serial port4 reception */
+#define DMxCTR_BG_SC5TX 0x0000001b /* - serial port5 transmission */
+#define DMxCTR_BG_SC5RX 0x0000001c /* - serial port5 reception */
+#define DMxCTR_BG_SC6TX 0x0000001d /* - serial port6 transmission */
+#define DMxCTR_BG_SC6RX 0x0000001e /* - serial port6 reception */
+#define DMxCTR_BG_TMSUFLOW 0x0000001f /* - timestamp timer underflow */
+#define DMxCTR_SAM 0x00000060 /* DMA transfer src addr mode */
+#define DMxCTR_SAM_INCR 0x00000000 /* - increment */
+#define DMxCTR_SAM_DECR 0x00000020 /* - decrement */
+#define DMxCTR_SAM_FIXED 0x00000040 /* - fixed */
+#define DMxCTR_DAM 0x00000300 /* DMA transfer dest addr mode */
+#define DMxCTR_DAM_INCR 0x00000000 /* - increment */
+#define DMxCTR_DAM_DECR 0x00000100 /* - decrement */
+#define DMxCTR_DAM_FIXED 0x00000200 /* - fixed */
+#define DMxCTR_UT 0x00006000 /* DMA transfer unit */
+#define DMxCTR_UT_1 0x00000000 /* - 1 byte */
+#define DMxCTR_UT_2 0x00002000 /* - 2 byte */
+#define DMxCTR_UT_4 0x00004000 /* - 4 byte */
+#define DMxCTR_UT_16 0x00006000 /* - 16 byte */
+#define DMxCTR_RRE 0x00008000 /* DMA round robin enable */
+#define DMxCTR_TEN 0x00010000 /* DMA channel transfer enable */
+#define DMxCTR_RQM 0x00060000 /* external request input source mode */
+#define DMxCTR_RQM_FALLEDGE 0x00000000 /* - falling edge */
+#define DMxCTR_RQM_RISEEDGE 0x00020000 /* - rising edge */
+#define DMxCTR_RQM_LOLEVEL 0x00040000 /* - low level */
+#define DMxCTR_RQM_HILEVEL 0x00060000 /* - high level */
+#define DMxCTR_RQF 0x01000000 /* DMA transfer request flag */
+#define DMxCTR_PERR 0x40000000 /* DMA transfer parameter error flag */
+#define DMxCTR_XEND 0x80000000 /* DMA transfer end flag */
+
+#define DMxSRC(N) __SYSREG(0xd4005004+(N*0x100), u32) /* control reg */
+
+#define DMxDST(N) __SYSREG(0xd4005008+(N*0x100), u32) /* source addr reg */
+
+#define DMxSIZ(N) __SYSREG(0xd400500c+(N*0x100), u32) /* dest addr reg */
+#define DMxSIZ_CT 0x000fffff /* number of bytes to transfer */
+
+#define DMxCYC(N) __SYSREG(0xd4005010+(N*0x100), u32) /* intermittent size reg */
+#define DMxCYC_CYC 0x000000ff /* number of interrmittent transfers -1 */
+
+#define DM0IRQ 16 /* DMA channel 0 complete IRQ */
+#define DM1IRQ 17 /* DMA channel 1 complete IRQ */
+#define DM2IRQ 18 /* DMA channel 2 complete IRQ */
+#define DM3IRQ 19 /* DMA channel 3 complete IRQ */
+
+#define DM0ICR GxICR(DM0IRQ) /* DMA channel 0 complete intr ctrl reg */
+#define DM1ICR GxICR(DM0IR1) /* DMA channel 1 complete intr ctrl reg */
+#define DM2ICR GxICR(DM0IR2) /* DMA channel 2 complete intr ctrl reg */
+#define DM3ICR GxICR(DM0IR3) /* DMA channel 3 complete intr ctrl reg */
+
+#ifndef __ASSEMBLY__
+
+struct mn10300_dmactl_regs {
+ u32 ctr;
+ const void *src;
+ void *dst;
+ u32 siz;
+ u32 cyc;
+} __attribute__((aligned(0x100)));
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_PROC_DMACTL_REGS_H */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/intctl-regs.h b/arch/mn10300/proc-mn2ws0050/include/proc/intctl-regs.h
new file mode 100644
index 0000000..a1e9772
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/intctl-regs.h
@@ -0,0 +1,29 @@
+#ifndef _ASM_PROC_INTCTL_REGS_H
+#define _ASM_PROC_INTCTL_REGS_H
+
+#ifndef _ASM_INTCTL_REGS_H
+# error "please don't include this file directly"
+#endif
+
+/* intr acceptance group reg */
+#define IAGR __SYSREG(0xd4000100, u16)
+
+/* group number register */
+#define IAGR_GN 0x003fc
+
+#define __GET_XIRQ_TRIGGER(X, Z) (((Z) >> ((X) * 2)) & 3)
+
+#define __SET_XIRQ_TRIGGER(X, Y, Z) \
+({ \
+ typeof(Z) x = (Z); \
+ x &= ~(3 << ((X) * 2)); \
+ x |= ((Y) & 3) << ((X) * 2); \
+ (Z) = x; \
+})
+
+/* external pin intr spec reg */
+#define EXTMD0 __SYSREG(0xd4000200, u32)
+#define GET_XIRQ_TRIGGER(X) __GET_XIRQ_TRIGGER(X, EXTMD0)
+#define SET_XIRQ_TRIGGER(X, Y) __SET_XIRQ_TRIGGER(X, Y, EXTMD0)
+
+#endif /* _ASM_PROC_INTCTL_REGS_H */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/irq.h b/arch/mn10300/proc-mn2ws0050/include/proc/irq.h
new file mode 100644
index 0000000..37777a8
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/irq.h
@@ -0,0 +1,49 @@
+/* MN2WS0050 on-board interrupt controller registers
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * Modified by Matsushita Electric Industrial Co., Ltd.
+ * Modifications:
+ * 13-Nov-2006 MEI Define extended IRQ number for SMP support.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _PROC_IRQ_H
+#define _PROC_IRQ_H
+
+#ifdef __KERNEL__
+
+#define GxICR_NUM_IRQS 163
+#ifdef CONFIG_SMP
+#define GxICR_NUM_EXT_IRQS 197
+#endif /* CONFIG_SMP */
+
+#define GxICR_NUM_XIRQS 16
+
+#define XIRQ0 34
+#define XIRQ1 35
+#define XIRQ2 36
+#define XIRQ3 37
+#define XIRQ4 38
+#define XIRQ5 39
+#define XIRQ6 40
+#define XIRQ7 41
+#define XIRQ8 42
+#define XIRQ9 43
+#define XIRQ10 44
+#define XIRQ11 45
+#define XIRQ12 46
+#define XIRQ13 47
+#define XIRQ14 48
+#define XIRQ15 49
+
+#define XIRQ2IRQ(num) (XIRQ0 + num)
+
+#endif /* __KERNEL__ */
+
+#endif /* _PROC_IRQ_H */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/nand-regs.h b/arch/mn10300/proc-mn2ws0050/include/proc/nand-regs.h
new file mode 100644
index 0000000..84448f3
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/nand-regs.h
@@ -0,0 +1,120 @@
+/* NAND flash interface register definitions
+ *
+ * Copyright (C) 2008-2009 Panasonic Corporation
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _PROC_NAND_REGS_H_
+#define _PROC_NAND_REGS_H_
+
+/* command register */
+#define FCOMMAND_0 __SYSREG(0xd8f00000, u8) /* fcommand[24:31] */
+#define FCOMMAND_1 __SYSREG(0xd8f00001, u8) /* fcommand[16:23] */
+#define FCOMMAND_2 __SYSREG(0xd8f00002, u8) /* fcommand[8:15] */
+#define FCOMMAND_3 __SYSREG(0xd8f00003, u8) /* fcommand[0:7] */
+
+/* for dma 16 byte trans, use FCOMMAND2 register */
+#define FCOMMAND2_0 __SYSREG(0xd8f00110, u8) /* fcommand2[24:31] */
+#define FCOMMAND2_1 __SYSREG(0xd8f00111, u8) /* fcommand2[16:23] */
+#define FCOMMAND2_2 __SYSREG(0xd8f00112, u8) /* fcommand2[8:15] */
+#define FCOMMAND2_3 __SYSREG(0xd8f00113, u8) /* fcommand2[0:7] */
+
+#define FCOMMAND_FIEN 0x80 /* nand flash I/F enable */
+#define FCOMMAND_BW_8BIT 0x00 /* 8bit bus width */
+#define FCOMMAND_BW_16BIT 0x40 /* 16bit bus width */
+#define FCOMMAND_BLOCKSZ_SMALL 0x00 /* small block */
+#define FCOMMAND_BLOCKSZ_LARGE 0x20 /* large block */
+#define FCOMMAND_DMASTART 0x10 /* dma start */
+#define FCOMMAND_RYBY 0x08 /* ready/busy flag */
+#define FCOMMAND_RYBYINTMSK 0x04 /* mask ready/busy interrupt */
+#define FCOMMAND_XFWP 0x02 /* write protect enable */
+#define FCOMMAND_XFCE 0x01 /* flash device disable */
+#define FCOMMAND_SEQKILL 0x10 /* stop seq-read */
+#define FCOMMAND_ANUM 0x07 /* address cycle */
+#define FCOMMAND_ANUM_NONE 0x00 /* address cycle none */
+#define FCOMMAND_ANUM_1CYC 0x01 /* address cycle 1cycle */
+#define FCOMMAND_ANUM_2CYC 0x02 /* address cycle 2cycle */
+#define FCOMMAND_ANUM_3CYC 0x03 /* address cycle 3cycle */
+#define FCOMMAND_ANUM_4CYC 0x04 /* address cycle 4cycle */
+#define FCOMMAND_ANUM_5CYC 0x05 /* address cycle 5cycle */
+#define FCOMMAND_FCMD_READ0 0x00 /* read1 command */
+#define FCOMMAND_FCMD_SEQIN 0x80 /* page program 1st command */
+#define FCOMMAND_FCMD_PAGEPROG 0x10 /* page program 2nd command */
+#define FCOMMAND_FCMD_RESET 0xff /* reset command */
+#define FCOMMAND_FCMD_ERASE1 0x60 /* erase 1st command */
+#define FCOMMAND_FCMD_ERASE2 0xd0 /* erase 2nd command */
+#define FCOMMAND_FCMD_STATUS 0x70 /* read status command */
+#define FCOMMAND_FCMD_READID 0x90 /* read id command */
+#define FCOMMAND_FCMD_READOOB 0x50 /* read3 command */
+/* address register */
+#define FADD __SYSREG(0xd8f00004, u32)
+/* address register 2 */
+#define FADD2 __SYSREG(0xd8f00008, u32)
+/* error judgement register */
+#define FJUDGE __SYSREG(0xd8f0000c, u32)
+#define FJUDGE_NOERR 0x0 /* no error */
+#define FJUDGE_1BITERR 0x1 /* 1bit error in data area */
+#define FJUDGE_PARITYERR 0x2 /* parity error */
+#define FJUDGE_UNCORRECTABLE 0x3 /* uncorrectable error */
+#define FJUDGE_ERRJDG_MSK 0x3 /* mask of judgement result */
+/* 1st ECC store register */
+#define FECC11 __SYSREG(0xd8f00010, u32)
+/* 2nd ECC store register */
+#define FECC12 __SYSREG(0xd8f00014, u32)
+/* 3rd ECC store register */
+#define FECC21 __SYSREG(0xd8f00018, u32)
+/* 4th ECC store register */
+#define FECC22 __SYSREG(0xd8f0001c, u32)
+/* 5th ECC store register */
+#define FECC31 __SYSREG(0xd8f00020, u32)
+/* 6th ECC store register */
+#define FECC32 __SYSREG(0xd8f00024, u32)
+/* 7th ECC store register */
+#define FECC41 __SYSREG(0xd8f00028, u32)
+/* 8th ECC store register */
+#define FECC42 __SYSREG(0xd8f0002c, u32)
+/* data register */
+#define FDATA __SYSREG(0xd8f00030, u32)
+/* access pulse register */
+#define FPWS __SYSREG(0xd8f00100, u32)
+#define FPWS_PWS1W_2CLK 0x00000000 /* write pulse width 1clock */
+#define FPWS_PWS1W_3CLK 0x01000000 /* write pulse width 2clock */
+#define FPWS_PWS1W_4CLK 0x02000000 /* write pulse width 4clock */
+#define FPWS_PWS1W_5CLK 0x03000000 /* write pulse width 5clock */
+#define FPWS_PWS1W_6CLK 0x04000000 /* write pulse width 6clock */
+#define FPWS_PWS1W_7CLK 0x05000000 /* write pulse width 7clock */
+#define FPWS_PWS1W_8CLK 0x06000000 /* write pulse width 8clock */
+#define FPWS_PWS1R_3CLK 0x00010000 /* read pulse width 3clock */
+#define FPWS_PWS1R_4CLK 0x00020000 /* read pulse width 4clock */
+#define FPWS_PWS1R_5CLK 0x00030000 /* read pulse width 5clock */
+#define FPWS_PWS1R_6CLK 0x00040000 /* read pulse width 6clock */
+#define FPWS_PWS1R_7CLK 0x00050000 /* read pulse width 7clock */
+#define FPWS_PWS1R_8CLK 0x00060000 /* read pulse width 8clock */
+#define FPWS_PWS2W_2CLK 0x00000100 /* write pulse interval 2clock */
+#define FPWS_PWS2W_3CLK 0x00000200 /* write pulse interval 3clock */
+#define FPWS_PWS2W_4CLK 0x00000300 /* write pulse interval 4clock */
+#define FPWS_PWS2W_5CLK 0x00000400 /* write pulse interval 5clock */
+#define FPWS_PWS2W_6CLK 0x00000500 /* write pulse interval 6clock */
+#define FPWS_PWS2R_2CLK 0x00000001 /* read pulse interval 2clock */
+#define FPWS_PWS2R_3CLK 0x00000002 /* read pulse interval 3clock */
+#define FPWS_PWS2R_4CLK 0x00000003 /* read pulse interval 4clock */
+#define FPWS_PWS2R_5CLK 0x00000004 /* read pulse interval 5clock */
+#define FPWS_PWS2R_6CLK 0x00000005 /* read pulse interval 6clock */
+/* command register 2 */
+#define FCOMMAND2 __SYSREG(0xd8f00110, u32)
+/* transfer frequency register */
+#define FNUM __SYSREG(0xd8f00114, u32)
+#define FSDATA_ADDR 0xd8f00400
+/* active data register */
+#define FSDATA __SYSREG(FSDATA_ADDR, u32)
+
+#endif /* _PROC_NAND_REGS_H_ */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/proc.h b/arch/mn10300/proc-mn2ws0050/include/proc/proc.h
new file mode 100644
index 0000000..90d5cad
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/proc.h
@@ -0,0 +1,18 @@
+/* proc.h: MN2WS0050 processor description
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_PROC_PROC_H
+#define _ASM_PROC_PROC_H
+
+#define PROCESSOR_VENDOR_NAME "Panasonic"
+#define PROCESSOR_MODEL_NAME "mn2ws0050"
+
+#endif /* _ASM_PROC_PROC_H */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/smp-regs.h b/arch/mn10300/proc-mn2ws0050/include/proc/smp-regs.h
new file mode 100644
index 0000000..22f277f
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/smp-regs.h
@@ -0,0 +1,51 @@
+/* MN10300/AM33v2 Microcontroller SMP registers
+ *
+ * Copyright (C) 2006 Matsushita Electric Industrial Co., Ltd.
+ * All Rights Reserved.
+ * Created:
+ * 13-Nov-2006 MEI Add extended cache and atomic operation register
+ * for SMP support.
+ * 23-Feb-2007 MEI Add define for gdbstub SMP.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_PROC_SMP_REGS_H
+#define _ASM_PROC_SMP_REGS_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+#endif
+#include <asm/cpu-regs.h>
+
+/*
+ * Reference to the interrupt controllers of other CPUs
+ */
+#define CROSS_ICR_CPU_SHIFT 16
+
+#define CROSS_GxICR(X, CPU) __SYSREG(0xc4000000 + (X) * 4 + \
+ ((X) >= 64 && (X) < 192) * 0xf00 + ((CPU) << CROSS_ICR_CPU_SHIFT), u16)
+#define CROSS_GxICR_u8(X, CPU) __SYSREG(0xc4000000 + (X) * 4 + \
+ (((X) >= 64) && ((X) < 192)) * 0xf00 + ((CPU) << CROSS_ICR_CPU_SHIFT), u8)
+
+/* CPU ID register */
+#define CPUID __SYSREGC(0xc0000054, u32)
+#define CPUID_MASK 0x00000007 /* CPU ID mask */
+
+/* extended cache control register */
+#define ECHCTR __SYSREG(0xc0000c20, u32)
+#define ECHCTR_IBCM 0x00000001 /* instruction cache broad cast mask */
+#define ECHCTR_DBCM 0x00000002 /* data cache broad cast mask */
+#define ECHCTR_ISPM 0x00000004 /* instruction cache snoop mask */
+#define ECHCTR_DSPM 0x00000008 /* data cache snoop mask */
+
+#define NMIAGR __SYSREG(0xd400013c, u16)
+#define NMIAGR_GN 0x03fc
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_PROC_SMP_REGS_H */
diff --git a/arch/mn10300/proc-mn2ws0050/proc-init.c b/arch/mn10300/proc-mn2ws0050/proc-init.c
new file mode 100644
index 0000000..c58249b
--- /dev/null
+++ b/arch/mn10300/proc-mn2ws0050/proc-init.c
@@ -0,0 +1,134 @@
+/* MN2WS0050 processor initialisation
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#include <asm/processor.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/atomic.h>
+#include <asm/smp.h>
+#include <asm/pgalloc.h>
+#include <asm/busctl-regs.h>
+#include <unit/timex.h>
+#include <asm/fpu.h>
+#include <asm/rtc.h>
+
+#define MEMCONF __SYSREGC(0xdf800400, u32)
+
+/*
+ * initialise the on-silicon processor peripherals
+ */
+asmlinkage void __init processor_init(void)
+{
+ int loop;
+
+ /* set up the exception table first */
+ for (loop = 0x000; loop < 0x400; loop += 8)
+ __set_intr_stub(loop, __common_exception);
+
+ __set_intr_stub(EXCEP_ITLBMISS, itlb_miss);
+ __set_intr_stub(EXCEP_DTLBMISS, dtlb_miss);
+ __set_intr_stub(EXCEP_IAERROR, itlb_aerror);
+ __set_intr_stub(EXCEP_DAERROR, dtlb_aerror);
+ __set_intr_stub(EXCEP_BUSERROR, raw_bus_error);
+ __set_intr_stub(EXCEP_DOUBLE_FAULT, double_fault);
+ __set_intr_stub(EXCEP_FPU_DISABLED, fpu_disabled);
+ __set_intr_stub(EXCEP_SYSCALL0, system_call);
+
+ __set_intr_stub(EXCEP_NMI, nmi_handler);
+ __set_intr_stub(EXCEP_WDT, nmi_handler);
+ __set_intr_stub(EXCEP_IRQ_LEVEL0, irq_handler);
+ __set_intr_stub(EXCEP_IRQ_LEVEL1, irq_handler);
+ __set_intr_stub(EXCEP_IRQ_LEVEL2, irq_handler);
+ __set_intr_stub(EXCEP_IRQ_LEVEL3, irq_handler);
+ __set_intr_stub(EXCEP_IRQ_LEVEL4, irq_handler);
+ __set_intr_stub(EXCEP_IRQ_LEVEL5, irq_handler);
+ __set_intr_stub(EXCEP_IRQ_LEVEL6, irq_handler);
+
+ IVAR0 = EXCEP_IRQ_LEVEL0;
+ IVAR1 = EXCEP_IRQ_LEVEL1;
+ IVAR2 = EXCEP_IRQ_LEVEL2;
+ IVAR3 = EXCEP_IRQ_LEVEL3;
+ IVAR4 = EXCEP_IRQ_LEVEL4;
+ IVAR5 = EXCEP_IRQ_LEVEL5;
+ IVAR6 = EXCEP_IRQ_LEVEL6;
+
+#ifndef CONFIG_MN10300_HAS_CACHE_SNOOP
+ mn10300_dcache_flush_inv();
+ mn10300_icache_inv();
+#endif
+
+ /* disable all interrupts and set to priority 6 (lowest) */
+#ifdef CONFIG_SMP
+ for (loop = 0; loop < GxICR_NUM_IRQS; loop++)
+ GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT;
+#else /* !CONFIG_SMP */
+ for (loop = 0; loop < NR_IRQS; loop++)
+ GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT;
+#endif /* !CONFIG_SMP */
+
+ /* clear the timers */
+ TM0MD = 0;
+ TM1MD = 0;
+ TM2MD = 0;
+ TM3MD = 0;
+ TM4MD = 0;
+ TM5MD = 0;
+ TM6MD = 0;
+ TM6MDA = 0;
+ TM6MDB = 0;
+ TM7MD = 0;
+ TM8MD = 0;
+ TM9MD = 0;
+ TM10MD = 0;
+ TM11MD = 0;
+ TM12MD = 0;
+ TM13MD = 0;
+ TM14MD = 0;
+ TM15MD = 0;
+
+ calibrate_clock();
+}
+
+/*
+ * determine the memory size and base from the memory controller regs
+ */
+void __init get_mem_info(unsigned long *mem_base, unsigned long *mem_size)
+{
+ unsigned long memconf = MEMCONF;
+ unsigned long size = 0; /* order: MByte */
+
+ *mem_base = 0x90000000; /* fixed address */
+
+ switch (memconf & 0x00000003) {
+ case 0x01:
+ size = 256 / 8; /* 256 Mbit per chip */
+ break;
+ case 0x02:
+ size = 512 / 8; /* 512 Mbit per chip */
+ break;
+ case 0x03:
+ size = 1024 / 8; /* 1 Gbit per chip */
+ break;
+ default:
+ panic("Invalid SDRAM size");
+ break;
+ }
+
+ printk(KERN_INFO "DDR2-SDRAM: %luMB x 2 @%08lx\n", size, *mem_base);
+
+ *mem_size = (size * 2) << 20;
+}
diff --git a/arch/mn10300/unit-asb2303/include/unit/clock.h b/arch/mn10300/unit-asb2303/include/unit/clock.h
index 2a0bf79..0316907 100644
--- a/arch/mn10300/unit-asb2303/include/unit/clock.h
+++ b/arch/mn10300/unit-asb2303/include/unit/clock.h
@@ -14,32 +14,11 @@
#ifndef __ASSEMBLY__
-#ifdef CONFIG_MN10300_RTC
-
-extern unsigned long mn10300_ioclk; /* IOCLK (crystal speed) in HZ */
-extern unsigned long mn10300_iobclk;
-extern unsigned long mn10300_tsc_per_HZ;
-
-#define MN10300_IOCLK mn10300_ioclk
-/* If this processors has a another clock, uncomment the below. */
-/* #define MN10300_IOBCLK mn10300_iobclk */
-
-#else /* !CONFIG_MN10300_RTC */
-
#define MN10300_IOCLK 33333333UL
/* #define MN10300_IOBCLK 66666666UL */
-#endif /* !CONFIG_MN10300_RTC */
-
-#define MN10300_JCCLK MN10300_IOCLK
-#define MN10300_TSCCLK MN10300_IOCLK
-
-#ifdef CONFIG_MN10300_RTC
-#define MN10300_TSC_PER_HZ mn10300_tsc_per_HZ
-#else /* !CONFIG_MN10300_RTC */
-#define MN10300_TSC_PER_HZ (MN10300_TSCCLK/HZ)
-#endif /* !CONFIG_MN10300_RTC */
-
#endif /* !__ASSEMBLY__ */
+#define MN10300_WDCLK MN10300_IOCLK
+
#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/arch/mn10300/unit-asb2303/include/unit/serial.h b/arch/mn10300/unit-asb2303/include/unit/serial.h
index 047566c..991e356 100644
--- a/arch/mn10300/unit-asb2303/include/unit/serial.h
+++ b/arch/mn10300/unit-asb2303/include/unit/serial.h
@@ -22,6 +22,11 @@
#define SERIAL_IRQ XIRQ0 /* Dual serial (PC16552) (Hi) */
/*
+ * The ASB2303 has an 18.432 MHz clock the UART
+ */
+#define BASE_BAUD (18432000 / 16)
+
+/*
* dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
*/
#ifndef CONFIG_GDBSTUB_ON_TTYSx
diff --git a/arch/mn10300/unit-asb2303/include/unit/timex.h b/arch/mn10300/unit-asb2303/include/unit/timex.h
index 88cd96b..d1b8daf 100644
--- a/arch/mn10300/unit-asb2303/include/unit/timex.h
+++ b/arch/mn10300/unit-asb2303/include/unit/timex.h
@@ -1,4 +1,4 @@
-/* ASB2303-specific timer specifcations
+/* ASB2303-specific timer specifications
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@...hat.com)
@@ -17,6 +17,7 @@
#include <asm/timer-regs.h>
#include <unit/clock.h>
+#include <asm/param.h>
/*
* jiffies counter specifications
@@ -29,32 +30,43 @@
#define TMJCBR TM01BR
#define TMJCIRQ TM1IRQ
#define TMJCICR TM1ICR
-#define TMJCICR_LEVEL GxICR_LEVEL_5
#ifndef __ASSEMBLY__
+#define MN10300_SRC_IOCLK MN10300_IOCLK
+
+#ifndef HZ
+# error HZ undeclared.
+#endif /* !HZ */
+/* use as little prescaling as possible to avoid losing accuracy */
+#if (MN10300_SRC_IOCLK + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 1
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK
+#elif (MN10300_SRC_IOCLK / 8 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 8
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK_8
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK_8
+#elif (MN10300_SRC_IOCLK / 32 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 32
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK_32
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK_32
+#else
+# error You lose.
+#endif
+
+#define MN10300_JCCLK (MN10300_SRC_IOCLK / IOCLK_PRESCALE)
+#define MN10300_TSCCLK (MN10300_SRC_IOCLK / IOCLK_PRESCALE)
+
+#define MN10300_JC_PER_HZ ((MN10300_JCCLK + HZ / 2) / HZ)
+#define MN10300_TSC_PER_HZ ((MN10300_TSCCLK + HZ / 2) / HZ)
+
static inline void startup_jiffies_counter(void)
{
- unsigned rate;
u16 md, t16;
- /* use as little prescaling as possible to avoid losing accuracy */
- md = TM0MD_SRC_IOCLK;
- rate = MN10300_JCCLK / HZ;
-
- if (rate > TMJCBR_MAX) {
- md = TM0MD_SRC_IOCLK_8;
- rate = MN10300_JCCLK / 8 / HZ;
-
- if (rate > TMJCBR_MAX) {
- md = TM0MD_SRC_IOCLK_32;
- rate = MN10300_JCCLK / 32 / HZ;
-
- BUG_ON(rate > TMJCBR_MAX);
- }
- }
-
- TMJCBR = rate - 1;
+ md = JC_TIMER_CLKSRC;
+ TMJCBR = MN10300_JC_PER_HZ - 1;
t16 = TMJCBR;
TMJCMD =
@@ -93,29 +105,39 @@ static inline void shutdown_jiffies_counter(void)
static inline void startup_timestamp_counter(void)
{
+ u32 t32;
+
/* set up timer 4 & 5 cascaded as a 32-bit counter to count real time
* - count down from 4Gig-1 to 0 and wrap at IOCLK rate
*/
TM45BR = TMTSCBR_MAX;
+ t32 = TM45BR;
- TM4MD = TM4MD_SRC_IOCLK;
+ TM4MD = TSC_TIMER_CLKSRC;
TM4MD |= TM4MD_INIT_COUNTER;
TM4MD &= ~TM4MD_INIT_COUNTER;
TM4ICR = 0;
+ t32 = TM4ICR;
TM5MD = TM5MD_SRC_TM4CASCADE;
TM5MD |= TM5MD_INIT_COUNTER;
TM5MD &= ~TM5MD_INIT_COUNTER;
TM5ICR = 0;
+ t32 = TM5ICR;
TM5MD |= TM5MD_COUNT_ENABLE;
TM4MD |= TM4MD_COUNT_ENABLE;
+ t32 = TM5MD;
+ t32 = TM4MD;
}
static inline void shutdown_timestamp_counter(void)
{
+ u8 t8;
TM4MD = 0;
TM5MD = 0;
+ t8 = TM4MD;
+ t8 = TM5MD;
}
/*
diff --git a/arch/mn10300/unit-asb2303/unit-init.c b/arch/mn10300/unit-asb2303/unit-init.c
index 70e8cb4..834a76a 100644
--- a/arch/mn10300/unit-asb2303/unit-init.c
+++ b/arch/mn10300/unit-asb2303/unit-init.c
@@ -31,6 +31,14 @@ asmlinkage void __init unit_init(void)
SET_XIRQ_TRIGGER(3, XIRQ_TRIGGER_HILEVEL);
SET_XIRQ_TRIGGER(4, XIRQ_TRIGGER_LOWLEVEL);
SET_XIRQ_TRIGGER(5, XIRQ_TRIGGER_LOWLEVEL);
+
+#ifdef CONFIG_EXT_SERIAL_IRQ_LEVEL
+ set_intr_level(XIRQ0, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
+#endif
+
+#ifdef CONFIG_ETHERNET_IRQ_LEVEL
+ set_intr_level(XIRQ3, NUM2GxICR_LEVEL(CONFIG_ETHERNET_IRQ_LEVEL));
+#endif
}
/*
@@ -51,7 +59,7 @@ void __init unit_init_IRQ(void)
switch (GET_XIRQ_TRIGGER(extnum)) {
case XIRQ_TRIGGER_HILEVEL:
case XIRQ_TRIGGER_LOWLEVEL:
- set_intr_postackable(XIRQ2IRQ(extnum));
+ mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
break;
default:
break;
diff --git a/arch/mn10300/unit-asb2305/include/unit/clock.h b/arch/mn10300/unit-asb2305/include/unit/clock.h
index 67be3f2..29e3425 100644
--- a/arch/mn10300/unit-asb2305/include/unit/clock.h
+++ b/arch/mn10300/unit-asb2305/include/unit/clock.h
@@ -14,32 +14,11 @@
#ifndef __ASSEMBLY__
-#ifdef CONFIG_MN10300_RTC
-
-extern unsigned long mn10300_ioclk; /* IOCLK (crystal speed) in HZ */
-extern unsigned long mn10300_iobclk;
-extern unsigned long mn10300_tsc_per_HZ;
-
-#define MN10300_IOCLK mn10300_ioclk
-/* If this processors has a another clock, uncomment the below. */
-/* #define MN10300_IOBCLK mn10300_iobclk */
-
-#else /* !CONFIG_MN10300_RTC */
-
#define MN10300_IOCLK 33333333UL
/* #define MN10300_IOBCLK 66666666UL */
-#endif /* !CONFIG_MN10300_RTC */
-
-#define MN10300_JCCLK MN10300_IOCLK
-#define MN10300_TSCCLK MN10300_IOCLK
-
-#ifdef CONFIG_MN10300_RTC
-#define MN10300_TSC_PER_HZ mn10300_tsc_per_HZ
-#else /* !CONFIG_MN10300_RTC */
-#define MN10300_TSC_PER_HZ (MN10300_TSCCLK/HZ)
-#endif /* !CONFIG_MN10300_RTC */
-
#endif /* !__ASSEMBLY__ */
+#define MN10300_WDCLK MN10300_IOCLK
+
#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/arch/mn10300/unit-asb2305/include/unit/serial.h b/arch/mn10300/unit-asb2305/include/unit/serial.h
index 8086cc0..88c0821 100644
--- a/arch/mn10300/unit-asb2305/include/unit/serial.h
+++ b/arch/mn10300/unit-asb2305/include/unit/serial.h
@@ -21,6 +21,11 @@
#define SERIAL_IRQ XIRQ0 /* Dual serial (PC16552) (Hi) */
/*
+ * The ASB2305 has an 18.432 MHz clock the UART
+ */
+#define BASE_BAUD (18432000 / 16)
+
+/*
* dispose of the /dev/ttyS0 serial port
*/
#ifndef CONFIG_GDBSTUB_ON_TTYSx
diff --git a/arch/mn10300/unit-asb2305/include/unit/timex.h b/arch/mn10300/unit-asb2305/include/unit/timex.h
index 0860186..cd8bc14 100644
--- a/arch/mn10300/unit-asb2305/include/unit/timex.h
+++ b/arch/mn10300/unit-asb2305/include/unit/timex.h
@@ -1,4 +1,4 @@
-/* ASB2305 timer specifcations
+/* ASB2305-specific timer specifications
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@...hat.com)
@@ -17,6 +17,7 @@
#include <asm/timer-regs.h>
#include <unit/clock.h>
+#include <asm/param.h>
/*
* jiffies counter specifications
@@ -29,32 +30,43 @@
#define TMJCBR TM01BR
#define TMJCIRQ TM1IRQ
#define TMJCICR TM1ICR
-#define TMJCICR_LEVEL GxICR_LEVEL_5
#ifndef __ASSEMBLY__
+#define MN10300_SRC_IOCLK MN10300_IOCLK
+
+#ifndef HZ
+# error HZ undeclared.
+#endif /* !HZ */
+/* use as little prescaling as possible to avoid losing accuracy */
+#if (MN10300_SRC_IOCLK + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 1
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK
+#elif (MN10300_SRC_IOCLK / 8 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 8
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK_8
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK_8
+#elif (MN10300_SRC_IOCLK / 32 + HZ / 2) / HZ - 1 <= TMJCBR_MAX
+# define IOCLK_PRESCALE 32
+# define JC_TIMER_CLKSRC TM0MD_SRC_IOCLK_32
+# define TSC_TIMER_CLKSRC TM4MD_SRC_IOCLK_32
+#else
+# error You lose.
+#endif
+
+#define MN10300_JCCLK (MN10300_SRC_IOCLK / IOCLK_PRESCALE)
+#define MN10300_TSCCLK (MN10300_SRC_IOCLK / IOCLK_PRESCALE)
+
+#define MN10300_JC_PER_HZ ((MN10300_JCCLK + HZ / 2) / HZ)
+#define MN10300_TSC_PER_HZ ((MN10300_TSCCLK + HZ / 2) / HZ)
+
static inline void startup_jiffies_counter(void)
{
- unsigned rate;
u16 md, t16;
- /* use as little prescaling as possible to avoid losing accuracy */
- md = TM0MD_SRC_IOCLK;
- rate = MN10300_JCCLK / HZ;
-
- if (rate > TMJCBR_MAX) {
- md = TM0MD_SRC_IOCLK_8;
- rate = MN10300_JCCLK / 8 / HZ;
-
- if (rate > TMJCBR_MAX) {
- md = TM0MD_SRC_IOCLK_32;
- rate = MN10300_JCCLK / 32 / HZ;
-
- BUG_ON(rate > TMJCBR_MAX);
- }
- }
-
- TMJCBR = rate - 1;
+ md = JC_TIMER_CLKSRC;
+ TMJCBR = MN10300_JC_PER_HZ - 1;
t16 = TMJCBR;
TMJCMD =
@@ -93,29 +105,39 @@ static inline void shutdown_jiffies_counter(void)
static inline void startup_timestamp_counter(void)
{
+ u32 t32;
+
/* set up timer 4 & 5 cascaded as a 32-bit counter to count real time
* - count down from 4Gig-1 to 0 and wrap at IOCLK rate
*/
TM45BR = TMTSCBR_MAX;
+ t32 = TM45BR;
- TM4MD = TM4MD_SRC_IOCLK;
+ TM4MD = TSC_TIMER_CLKSRC;
TM4MD |= TM4MD_INIT_COUNTER;
TM4MD &= ~TM4MD_INIT_COUNTER;
TM4ICR = 0;
+ t32 = TM4ICR;
TM5MD = TM5MD_SRC_TM4CASCADE;
TM5MD |= TM5MD_INIT_COUNTER;
TM5MD &= ~TM5MD_INIT_COUNTER;
TM5ICR = 0;
+ t32 = TM5ICR;
TM5MD |= TM5MD_COUNT_ENABLE;
TM4MD |= TM4MD_COUNT_ENABLE;
+ t32 = TM5MD;
+ t32 = TM4MD;
}
static inline void shutdown_timestamp_counter(void)
{
+ u8 t8;
TM4MD = 0;
TM5MD = 0;
+ t8 = TM4MD;
+ t8 = TM5MD;
}
/*
@@ -126,7 +148,7 @@ typedef unsigned long cycles_t;
static inline cycles_t read_timestamp_counter(void)
{
- return (cycles_t) TMTSCBC;
+ return (cycles_t)TMTSCBC;
}
#endif /* !__ASSEMBLY__ */
diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c
index 6d8720a..a4954fe 100644
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c
@@ -503,7 +503,7 @@ asmlinkage void __init unit_pci_init(void)
struct pci_ops *o = &pci_direct_ampci;
u32 x;
- set_intr_level(XIRQ1, GxICR_LEVEL_3);
+ set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_PCI_IRQ_LEVEL));
memset(&bus, 0, sizeof(bus));
diff --git a/arch/mn10300/unit-asb2305/unit-init.c b/arch/mn10300/unit-asb2305/unit-init.c
index a76c8e0..e1becd6 100644
--- a/arch/mn10300/unit-asb2305/unit-init.c
+++ b/arch/mn10300/unit-asb2305/unit-init.c
@@ -26,8 +26,10 @@ asmlinkage void __init unit_init(void)
{
#ifndef CONFIG_GDBSTUB_ON_TTYSx
/* set the 16550 interrupt line to level 3 if not being used for GDB */
- set_intr_level(XIRQ0, GxICR_LEVEL_3);
+#ifdef CONFIG_EXT_SERIAL_IRQ_LEVEL
+ set_intr_level(XIRQ0, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
#endif
+#endif /* CONFIG_GDBSTUB_ON_TTYSx */
}
/*
@@ -51,7 +53,7 @@ void __init unit_init_IRQ(void)
switch (GET_XIRQ_TRIGGER(extnum)) {
case XIRQ_TRIGGER_HILEVEL:
case XIRQ_TRIGGER_LOWLEVEL:
- set_intr_postackable(XIRQ2IRQ(extnum));
+ mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
break;
default:
break;
diff --git a/arch/mn10300/unit-asb2364/Makefile b/arch/mn10300/unit-asb2364/Makefile
new file mode 100644
index 0000000..6dd27d6
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/Makefile
@@ -0,0 +1,10 @@
+#
+# Makefile for the linux kernel.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definitions are now in the main makefile...
+
+obj-y := unit-init.o leds.o
diff --git a/arch/mn10300/unit-asb2364/include/unit/clock.h b/arch/mn10300/unit-asb2364/include/unit/clock.h
new file mode 100644
index 0000000..d34ac9a
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/clock.h
@@ -0,0 +1,29 @@
+/* clock.h: unit-specific clocks
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * Modified by Matsushita Electric Industrial Co., Ltd.
+ * Modifications:
+ * 23-Feb-2007 MEI Add define for watchdog timer.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_UNIT_CLOCK_H
+#define _ASM_UNIT_CLOCK_H
+
+#ifndef __ASSEMBLY__
+
+#define MN10300_IOCLK 100000000UL /* for DDR800 */
+/*#define MN10300_IOCLK 83333333UL */ /* for DDR667 */
+#define MN10300_IOBCLK MN10300_IOCLK /* IOBCLK is equal to IOCLK */
+
+#endif /* !__ASSEMBLY__ */
+
+#define MN10300_WDCLK 27000000UL
+
+#endif /* _ASM_UNIT_CLOCK_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h b/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h
new file mode 100644
index 0000000..a039a50
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h
@@ -0,0 +1,50 @@
+/* ASB2364 FPGA registers
+ */
+
+#ifndef _ASM_UNIT_FPGA_REGS_H
+#define _ASM_UNIT_FPGA_REGS_H
+
+#include <asm/cpu-regs.h>
+
+#ifdef __KERNEL__
+
+#define ASB2364_FPGA_REG_RESET_LAN __SYSREG(0xa9001300, u16)
+#define ASB2364_FPGA_REG_RESET_UART __SYSREG(0xa9001304, u16)
+#define ASB2364_FPGA_REG_RESET_I2C __SYSREG(0xa9001308, u16)
+#define ASB2364_FPGA_REG_RESET_USB __SYSREG(0xa900130c, u16)
+#define ASB2364_FPGA_REG_RESET_AV __SYSREG(0xa9001310, u16)
+
+#define ASB2364_FPGA_REG_IRQ_LAN __SYSREG(0xa9001510, u16)
+#define ASB2364_FPGA_REG_IRQ_UART __SYSREG(0xa9001514, u16)
+#define ASB2364_FPGA_REG_IRQ_I2C __SYSREG(0xa9001518, u16)
+#define ASB2364_FPGA_REG_IRQ_USB __SYSREG(0xa900151c, u16)
+#define ASB2364_FPGA_REG_IRQ_FPGA __SYSREG(0xa9001524, u16)
+
+#define ASB2364_FPGA_REG_MASK_LAN __SYSREG(0xa9001590, u16)
+#define ASB2364_FPGA_REG_MASK_UART __SYSREG(0xa9001594, u16)
+#define ASB2364_FPGA_REG_MASK_I2C __SYSREG(0xa9001598, u16)
+#define ASB2364_FPGA_REG_MASK_USB __SYSREG(0xa900159c, u16)
+#define ASB2364_FPGA_REG_MASK_FPGA __SYSREG(0xa90015a4, u16)
+
+#define ASB2364_FPGA_REG_CPLD5_SET1 __SYSREG(0xa9002500, u16)
+#define ASB2364_FPGA_REG_CPLD5_SET2 __SYSREG(0xa9002504, u16)
+#define ASB2364_FPGA_REG_CPLD6_SET1 __SYSREG(0xa9002600, u16)
+#define ASB2364_FPGA_REG_CPLD6_SET2 __SYSREG(0xa9002604, u16)
+#define ASB2364_FPGA_REG_CPLD7_SET1 __SYSREG(0xa9002700, u16)
+#define ASB2364_FPGA_REG_CPLD7_SET2 __SYSREG(0xa9002704, u16)
+#define ASB2364_FPGA_REG_CPLD8_SET1 __SYSREG(0xa9002800, u16)
+#define ASB2364_FPGA_REG_CPLD8_SET2 __SYSREG(0xa9002804, u16)
+#define ASB2364_FPGA_REG_CPLD9_SET1 __SYSREG(0xa9002900, u16)
+#define ASB2364_FPGA_REG_CPLD9_SET2 __SYSREG(0xa9002904, u16)
+#define ASB2364_FPGA_REG_CPLD10_SET1 __SYSREG(0xa9002a00, u16)
+#define ASB2364_FPGA_REG_CPLD10_SET2 __SYSREG(0xa9002a04, u16)
+
+#define SyncExBus() \
+ do { \
+ unsigned short w; \
+ w = *(volatile short *)0xa9000000; \
+ } while (0)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_UNIT_FPGA_REGS_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/leds.h b/arch/mn10300/unit-asb2364/include/unit/leds.h
new file mode 100644
index 0000000..03a3933
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/leds.h
@@ -0,0 +1,54 @@
+/* Unit-specific leds
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_UNIT_LEDS_H
+#define _ASM_UNIT_LEDS_H
+
+#include <asm/pio-regs.h>
+#include <asm/cpu-regs.h>
+#include <asm/exceptions.h>
+
+#define MN10300_USE_7SEGLEDS 0
+
+#define ASB2364_7SEGLEDS __SYSREG(0xA9001630, u32)
+
+/*
+ * use the 7-segment LEDs to indicate states
+ */
+
+#if MN10300_USE_7SEGLEDS
+/* flip the 7-segment LEDs between "Gdb-" and "----" */
+#define mn10300_set_gdbleds(ONOFF) \
+ do { \
+ ASB2364_7SEGLEDS = (ONOFF) ? 0x8543077f : 0x7f7f7f7f; \
+ } while (0)
+#else
+#define mn10300_set_gdbleds(ONOFF) do {} while (0)
+#endif
+
+#if MN10300_USE_7SEGLEDS
+/* indicate double-fault by displaying "db-f" on the LEDs */
+#define mn10300_set_dbfleds \
+ mov 0x43077f1d,d0 ; \
+ mov d0,(ASB2364_7SEGLEDS)
+#else
+#define mn10300_set_dbfleds
+#endif
+
+#ifndef __ASSEMBLY__
+extern void peripheral_leds_display_exception(enum exception_code);
+extern void peripheral_leds_led_chase(void);
+extern void peripheral_leds7x4_display_dec(unsigned int, unsigned int);
+extern void peripheral_leds7x4_display_hex(unsigned int, unsigned int);
+extern void debug_to_serial(const char *, int);
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_LEDS_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/serial.h b/arch/mn10300/unit-asb2364/include/unit/serial.h
new file mode 100644
index 0000000..7f048bb
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/serial.h
@@ -0,0 +1,151 @@
+/* Unit-specific 8250 serial ports
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_UNIT_SERIAL_H
+#define _ASM_UNIT_SERIAL_H
+
+#include <asm/cpu-regs.h>
+#include <proc/irq.h>
+#include <unit/fpga-regs.h>
+#include <linux/serial_reg.h>
+
+#define SERIAL_PORT0_BASE_ADDRESS 0xA8200000
+
+#define SERIAL_IRQ XIRQ1 /* single serial (TL16C550C) (Lo) */
+
+/*
+ * The ASB2364 has an 12.288 MHz clock
+ * for your UART.
+ *
+ * It'd be nice if someone built a serial card with a 24.576 MHz
+ * clock, since the 16550A is capable of handling a top speed of 1.5
+ * megabits/second; but this requires the faster clock.
+ */
+#define BASE_BAUD (12288000 / 16)
+
+/*
+ * dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
+ */
+#ifndef CONFIG_GDBSTUB_ON_TTYSx
+
+#define SERIAL_PORT_DFNS \
+ { \
+ .baud_base = BASE_BAUD, \
+ .irq = SERIAL_IRQ, \
+ .flags = STD_COM_FLAGS, \
+ .iomem_base = (u8 *) SERIAL_PORT0_BASE_ADDRESS, \
+ .iomem_reg_shift = 1, \
+ .io_type = SERIAL_IO_MEM, \
+ },
+
+#ifndef __ASSEMBLY__
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#else /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#define SERIAL_PORT_DFNS /* stolen by gdb-stub */
+
+#if defined(CONFIG_GDBSTUB_ON_TTYS0)
+#define GDBPORT_SERIAL_RX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX * 4, u8)
+#define GDBPORT_SERIAL_TX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX * 4, u8)
+#define GDBPORT_SERIAL_DLL __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
+#define GDBPORT_SERIAL_DLM __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
+#define GDBPORT_SERIAL_IER __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
+#define GDBPORT_SERIAL_IIR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
+#define GDBPORT_SERIAL_FCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
+#define GDBPORT_SERIAL_LCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
+#define GDBPORT_SERIAL_MCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
+#define GDBPORT_SERIAL_LSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
+#define GDBPORT_SERIAL_MSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
+#define GDBPORT_SERIAL_SCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
+#define GDBPORT_SERIAL_IRQ SERIAL_IRQ
+
+#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
+#error The ASB2364 does not have a /dev/ttyS1
+#endif
+
+#ifndef __ASSEMBLY__
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+ char ch;
+
+#define LSR_WAIT_FOR(STATE) \
+ do {} while (!(GDBPORT_SERIAL_LSR & UART_LSR_##STATE))
+#define FLOWCTL_QUERY(LINE) \
+ ({ GDBPORT_SERIAL_MSR & UART_MSR_##LINE; })
+#define FLOWCTL_WAIT_FOR(LINE) \
+ do {} while (!(GDBPORT_SERIAL_MSR & UART_MSR_##LINE))
+#define FLOWCTL_CLEAR(LINE) \
+ do { GDBPORT_SERIAL_MCR &= ~UART_MCR_##LINE; } while (0)
+#define FLOWCTL_SET(LINE) \
+ do { GDBPORT_SERIAL_MCR |= UART_MCR_##LINE; } while (0)
+
+ FLOWCTL_SET(DTR);
+
+ for (; n > 0; n--) {
+ LSR_WAIT_FOR(THRE);
+ FLOWCTL_WAIT_FOR(CTS);
+
+ ch = *p++;
+ if (ch == 0x0a) {
+ GDBPORT_SERIAL_TX = 0x0d;
+ LSR_WAIT_FOR(THRE);
+ FLOWCTL_WAIT_FOR(CTS);
+ }
+ GDBPORT_SERIAL_TX = ch;
+ }
+
+ FLOWCTL_CLEAR(DTR);
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#define SERIAL_INITIALIZE \
+do { \
+ /* release reset */ \
+ ASB2364_FPGA_REG_RESET_UART = 0x0001; \
+ SyncExBus(); \
+} while (0)
+
+#define SERIAL_CHECK_INTERRUPT \
+do { \
+ if ((ASB2364_FPGA_REG_IRQ_UART & 0x0001) == 0x0001) { \
+ return IRQ_NONE; \
+ } \
+} while (0)
+
+#define SERIAL_CLEAR_INTERRUPT \
+do { \
+ ASB2364_FPGA_REG_IRQ_UART = 0x0001; \
+ SyncExBus(); \
+} while (0)
+
+#define SERIAL_SET_INT_MASK \
+do { \
+ ASB2364_FPGA_REG_MASK_UART = 0x0001; \
+ SyncExBus(); \
+} while (0)
+
+#define SERIAL_CLEAR_INT_MASK \
+do { \
+ ASB2364_FPGA_REG_MASK_UART = 0x0000; \
+ SyncExBus(); \
+} while (0)
+
+#endif /* _ASM_UNIT_SERIAL_H */
diff --git a/arch/mn10300/unit-asb2364/include/unit/timex.h b/arch/mn10300/unit-asb2364/include/unit/timex.h
new file mode 100644
index 0000000..b5223f7
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/timex.h
@@ -0,0 +1,125 @@
+/* timex.h: MN2WS0038 architecture timer specifications
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _ASM_UNIT_TIMEX_H
+#define _ASM_UNIT_TIMEX_H
+
+#ifndef __ASSEMBLY__
+#include <linux/irq.h>
+#endif /* __ASSEMBLY__ */
+
+#include <asm/timer-regs.h>
+#include <unit/clock.h>
+#include <asm/param.h>
+
+/*
+ * jiffies counter specifications
+ */
+
+#define TMJCBR_MAX 0xffffff /* 24bit */
+#define TMJCBC TMTBC
+
+#define TMJCMD TMTMD
+#define TMJCBR TMTBR
+#define TMJCIRQ TMTIRQ
+#define TMJCICR TMTICR
+
+#ifndef __ASSEMBLY__
+
+#define MN10300_SRC_IOBCLK MN10300_IOBCLK
+
+#ifndef HZ
+# error HZ undeclared.
+#endif /* !HZ */
+
+#define MN10300_JCCLK (MN10300_SRC_IOBCLK)
+#define MN10300_TSCCLK (MN10300_SRC_IOBCLK)
+
+#define MN10300_JC_PER_HZ ((MN10300_JCCLK + HZ / 2) / HZ)
+#define MN10300_TSC_PER_HZ ((MN10300_TSCCLK + HZ / 2) / HZ)
+
+/* Check bit width of MTM interval value that sets base register */
+#if (MN10300_JC_PER_HZ - 1) > TMJCBR_MAX
+# error MTM tick timer interval value is overflow.
+#endif
+
+
+static inline void startup_jiffies_counter(void)
+{
+ u32 sync;
+
+ TMJCBR = MN10300_JC_PER_HZ - 1;
+ sync = TMJCBR;
+
+ TMJCMD = TMTMD_TMTLDE;
+ TMJCMD = TMTMD_TMTCNE;
+ sync = TMJCMD;
+
+ TMJCICR |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST;
+ sync = TMJCICR;
+}
+
+static inline void shutdown_jiffies_counter(void)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+
+/*
+ * timestamp counter specifications
+ */
+
+#define TMTSCBR_MAX 0xffffffff
+#define TMTSCMD TMSMD
+#define TMTSCBR TMSBR
+#define TMTSCBC TMSBC
+#define TMTSCICR TMSICR
+
+#ifndef __ASSEMBLY__
+
+static inline void startup_timestamp_counter(void)
+{
+ u32 sync;
+
+ /* set up TMS(Timestamp) 32bit timer register to count real time
+ * - count down from 4Gig-1 to 0 and wrap at IOBCLK rate
+ */
+
+ TMTSCBR = TMTSCBR_MAX;
+ sync = TMTSCBR;
+
+ TMTSCICR = 0;
+ sync = TMTSCICR;
+
+ TMTSCMD = TMTMD_TMTLDE;
+ TMTSCMD = TMTMD_TMTCNE;
+ sync = TMTSCMD;
+}
+
+static inline void shutdown_timestamp_counter(void)
+{
+ TMTSCMD = 0;
+}
+
+/*
+ * we use a cascaded pair of 16-bit down-counting timers to count I/O
+ * clock cycles for the purposes of time keeping
+ */
+typedef unsigned long cycles_t;
+
+static inline cycles_t read_timestamp_counter(void)
+{
+ return (cycles_t)TMTSCBC;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_UNIT_TIMEX_H */
diff --git a/arch/mn10300/unit-asb2364/leds.c b/arch/mn10300/unit-asb2364/leds.c
new file mode 100644
index 0000000..1ff830c
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/leds.c
@@ -0,0 +1,98 @@
+/* leds.c: ASB2364 peripheral 7seg LEDs x4 support
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/intctl-regs.h>
+#include <asm/rtc-regs.h>
+#include <unit/leds.h>
+
+#if MN10300_USE_7SEGLEDS
+static const u8 asb2364_led_hex_tbl[16] = {
+ 0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0,
+ 0x00, 0x20, 0x10, 0x06, 0x8c, 0x42, 0x0c, 0x1c
+};
+
+static const u32 asb2364_led_chase_tbl[6] = {
+ ~0x02020202, /* top - segA */
+ ~0x04040404, /* right top - segB */
+ ~0x08080808, /* right bottom - segC */
+ ~0x10101010, /* bottom - segD */
+ ~0x20202020, /* left bottom - segE */
+ ~0x40404040, /* left top - segF */
+};
+
+static unsigned asb2364_led_chase;
+
+void peripheral_leds7x4_display_dec(unsigned int val, unsigned int points)
+{
+ u32 leds;
+
+ leds = asb2364_led_hex_tbl[(val/1000) % 10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[(val/100) % 10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[(val/10) % 10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[val % 10];
+ leds |= points^0x01010101;
+
+ ASB2364_7SEGLEDS = leds;
+}
+
+void peripheral_leds7x4_display_hex(unsigned int val, unsigned int points)
+{
+ u32 leds;
+
+ leds = asb2364_led_hex_tbl[(val/1000) % 10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[(val/100) % 10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[(val/10) % 10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[val % 10];
+ leds |= points^0x01010101;
+
+ ASB2364_7SEGLEDS = leds;
+}
+
+/* display triple horizontal bar and exception code */
+void peripheral_leds_display_exception(enum exception_code code)
+{
+ u32 leds;
+
+ leds = asb2364_led_hex_tbl[(code/0x100) % 0x10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[(code/0x10) % 0x10];
+ leds <<= 8;
+ leds |= asb2364_led_hex_tbl[code % 0x10];
+ leds |= 0x6d010101;
+
+ ASB2364_7SEGLEDS = leds;
+}
+
+void peripheral_leds_led_chase(void)
+{
+ ASB2364_7SEGLEDS = asb2364_led_chase_tbl[asb2364_led_chase];
+ asb2364_led_chase++;
+ if (asb2364_led_chase >= 6)
+ asb2364_led_chase = 0;
+}
+#else /* MN10300_USE_7SEGLEDS */
+void peripheral_leds7x4_display_dec(unsigned int val, unsigned int points) { }
+void peripheral_leds7x4_display_hex(unsigned int val, unsigned int points) { }
+void peripheral_leds_display_exception(enum exception_code code) { }
+void peripheral_leds_led_chase(void) { }
+#endif /* MN10300_USE_7SEGLEDS */
diff --git a/arch/mn10300/unit-asb2364/unit-init.c b/arch/mn10300/unit-asb2364/unit-init.c
new file mode 100644
index 0000000..a3fc09b
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/unit-init.c
@@ -0,0 +1,85 @@
+/* ASB2364 initialisation
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/setup.h>
+#include <asm/processor.h>
+#include <asm/irq.h>
+#include <asm/intctl-regs.h>
+
+/*
+ * initialise some of the unit hardware before gdbstub is set up
+ */
+asmlinkage void __init unit_init(void)
+{
+ /* set up the external interrupts */
+
+ /* XIRQ[0]: NAND RXBY */
+ /* SET_XIRQ_TRIGGER(0, XIRQ_TRIGGER_LOWLEVEL); */
+
+ /* XIRQ[1]: LAN, UART, I2C, USB, PCI, FPGA */
+ SET_XIRQ_TRIGGER(1, XIRQ_TRIGGER_LOWLEVEL);
+
+ /* XIRQ[2]: Extend Slot 1-9 */
+ /* SET_XIRQ_TRIGGER(2, XIRQ_TRIGGER_LOWLEVEL); */
+
+#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL) && \
+ defined(CONFIG_ETHERNET_IRQ_LEVEL) && \
+ (CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL)
+# error CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL
+#endif
+
+#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL)
+ set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
+#elif defined(CONFIG_ETHERNET_IRQ_LEVEL)
+ set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_ETHERNET_IRQ_LEVEL));
+#endif
+}
+
+/*
+ * initialise the rest of the unit hardware after gdbstub is ready
+ */
+asmlinkage void __init unit_setup(void)
+{
+
+}
+
+/*
+ * initialise the external interrupts used by a unit of this type
+ */
+void __init unit_init_IRQ(void)
+{
+ unsigned int extnum;
+
+ for (extnum = 0 ; extnum < NR_XIRQS ; extnum++) {
+ switch (GET_XIRQ_TRIGGER(extnum)) {
+ /* LEVEL triggered interrupts should be made
+ * post-ACK'able as they hold their lines until
+ * serviced
+ */
+ case XIRQ_TRIGGER_HILEVEL:
+ case XIRQ_TRIGGER_LOWLEVEL:
+ mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
+ break;
+ default:
+ break;
+ }
+ }
+
+#define IRQCTL __SYSREG(0xd5000090, u32)
+ IRQCTL |= 0x02;
+}
--
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