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sh: SH7786 SMP support.

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SH7786 is roughly identical to SH-X3 proto SMP, though there are only 2
CPUs. This just wraps in to the existing SH-X3 SMP code with some minor
changes for SH7786, including wiring up the IPIs properly, enabling
IRQ_PER_CPU, and so forth.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2009-06-19 16:00:00 +09:00
parent b29fa1fbc2
commit 2eb2a43682
3 changed files with 18 additions and 24 deletions
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7
arch/sh/Kconfig
View file

@ -71,6 +71,9 @@ config GENERIC_HARDIRQS_NO__DO_IRQ
config GENERIC_IRQ_PROBE
def_bool y
config IRQ_PER_CPU
def_bool y
config GENERIC_GPIO
def_bool n
@ -414,6 +417,8 @@ config CPU_SUBTYPE_SH7786
select CPU_HAS_PTEAEX
select ARCH_SPARSEMEM_ENABLE
select SYS_SUPPORTS_NUMA
select SYS_SUPPORTS_SMP
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
config CPU_SUBTYPE_SHX3
bool "Support SH-X3 processor"
@ -651,7 +656,7 @@ config NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
depends on SMP
default "4" if CPU_SHX3
default "4" if CPU_SUBTYPE_SHX3
default "2"
help
This allows you to specify the maximum number of CPUs which this

6
arch/sh/kernel/cpu/sh4a/Makefile
View file

@ -16,7 +16,7 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7366) += setup-sh7366.o
obj-$(CONFIG_CPU_SUBTYPE_SHX3) += setup-shx3.o
# SMP setup
smp-$(CONFIG_CPU_SUBTYPE_SHX3) := smp-shx3.o
smp-$(CONFIG_CPU_SHX3) := smp-shx3.o
# Primary on-chip clocks (common)
clock-$(CONFIG_CPU_SUBTYPE_SH7763) := clock-sh7763.o
@ -38,6 +38,6 @@ pinmux-$(CONFIG_CPU_SUBTYPE_SH7724) := pinmux-sh7724.o
pinmux-$(CONFIG_CPU_SUBTYPE_SH7785) := pinmux-sh7785.o
pinmux-$(CONFIG_CPU_SUBTYPE_SH7786) := pinmux-sh7786.o
obj-y += $(clock-y)
obj-$(CONFIG_SMP) += $(smp-y)
obj-y += $(clock-y)
obj-$(CONFIG_SMP) += $(smp-y)
obj-$(CONFIG_GENERIC_GPIO) += $(pinmux-y)

29
arch/sh/kernel/cpu/sh4a/setup-sh7786.c
View file

@ -595,9 +595,8 @@ enum {
HSPI,
GPIO0, GPIO1,
Thermal,
INTC0, INTC1, INTC2, INTC3, INTC4, INTC5, INTC6, INTC7,
/* interrupt groups */
INTICI0, INTICI1, INTICI2, INTICI3,
INTICI4, INTICI5, INTICI6, INTICI7,
};
static struct intc_vect vectors[] __initdata = {
@ -638,10 +637,12 @@ static struct intc_vect vectors[] __initdata = {
INTC_VECT(HSPI, 0xe80),
INTC_VECT(GPIO0, 0xea0), INTC_VECT(GPIO1, 0xec0),
INTC_VECT(Thermal, 0xee0),
INTC_VECT(INTICI0, 0xf00), INTC_VECT(INTICI1, 0xf20),
INTC_VECT(INTICI2, 0xf40), INTC_VECT(INTICI3, 0xf60),
INTC_VECT(INTICI4, 0xf80), INTC_VECT(INTICI5, 0xfa0),
INTC_VECT(INTICI6, 0xfc0), INTC_VECT(INTICI7, 0xfe0),
};
/* FIXME: Main CPU support only now */
#if 1 /* Main CPU */
#define CnINTMSK0 0xfe410030
#define CnINTMSK1 0xfe410040
#define CnINTMSKCLR0 0xfe410050
@ -654,21 +655,6 @@ static struct intc_vect vectors[] __initdata = {
#define CnINT2MSKCR1 0xfe410a34
#define CnINT2MSKCR2 0xfe410a38
#define CnINT2MSKCR3 0xfe410a3c
#else /* Sub CPU */
#define CnINTMSK0 0xfe410034
#define CnINTMSK1 0xfe410044
#define CnINTMSKCLR0 0xfe410054
#define CnINTMSKCLR1 0xfe410064
#define CnINT2MSKR0 0xfe410b20
#define CnINT2MSKR1 0xfe410b24
#define CnINT2MSKR2 0xfe410b28
#define CnINT2MSKR3 0xfe410b2c
#define CnINT2MSKCR0 0xfe410b30
#define CnINT2MSKCR1 0xfe410b34
#define CnINT2MSKCR2 0xfe410b38
#define CnINT2MSKCR3 0xfe410b3c
#endif
#define INTMSK2 0xfe410068
#define INTMSKCLR2 0xfe41006c
@ -753,6 +739,9 @@ static struct intc_prio_reg prio_registers[] __initdata = {
GPIO1, Thermal } },
{ 0xfe41085c, 0, 32, 8, /* INT2PRI23 */ { 0, 0, 0, 0 } },
{ 0xfe410860, 0, 32, 8, /* INT2PRI24 */ { 0, 0, 0, 0 } },
{ 0xfe410090, 0xfe4100a0, 32, 4, /* CnICIPRI / CnICIPRICLR */
{ INTICI7, INTICI6, INTICI5, INTICI4,
INTICI3, INTICI2, INTICI1, INTICI0 }, INTC_SMP(4, 2) },
};
static DECLARE_INTC_DESC(intc_desc, "sh7786", vectors, NULL,