[PATCH 00/11] Rationalize and consolidate ARMs evaluation boards

[PATCH 00/11] Rationalize and consolidate ARMs evaluation boards

[Russell King - ARM Linux]

This series, which applies on top of the CLCD series consolidates some
of the code used on ARM platforms, in particular the FPGA interrupt,
local timer, and SMP bring up code.

We also add sched_clock() support for Integrator/CP, but only when we're
building only for Integrator/CP as Integrator/AP platforms don't have
the 24MHz counter.  We also move the sched_clock() initialization to
the early init callback, along with registering the clock lookups.

As we know how DMA is to be supported with primecells, we no longer need
the DMA definitions which aren't used, so these are removed.

[PATCH 01/11] ARM: integrator: use new init_early for clock tree init

[Russell King - ARM Linux]

Initialize the clock tree early.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-integrator/common.h        |    1 +
 arch/arm/mach-integrator/core.c          |    7 +++++--
 arch/arm/mach-integrator/integrator_ap.c |    3 ++-
 arch/arm/mach-integrator/integrator_cp.c |   11 +++++++++--
 4 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
index 5f96e15..a08f9b0 100644
--- a/arch/arm/mach-integrator/common.h
+++ b/arch/arm/mach-integrator/common.h
@@ -1 +1,2 @@
+void integrator_init_early(void);
 void integrator_reserve(void);
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
index b8e884b..77315b9 100644
--- a/arch/arm/mach-integrator/core.c
+++ b/arch/arm/mach-integrator/core.c
@@ -144,12 +144,15 @@ static struct clk_lookup lookups[] = {
 	}
 };
 
+void __init integrator_init_early(void)
+{
+	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+}
+
 static int __init integrator_init(void)
 {
 	int i;
 
-	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
-
 	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 		struct amba_device *d = amba_devs[i];
 		amba_device_register(d, &iomem_resource);
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index b666443..4f06b5d 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -499,8 +499,9 @@ static struct sys_timer ap_timer = {
 MACHINE_START(INTEGRATOR, "ARM-Integrator")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 	.boot_params	= 0x00000100,
-	.map_io		= ap_map_io,
 	.reserve	= integrator_reserve,
+	.map_io		= ap_map_io,
+	.init_early	= integrator_init_early,
 	.init_irq	= ap_init_irq,
 	.timer		= &ap_timer,
 	.init_machine	= ap_init,
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 9c02037..e6700aa 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -520,11 +520,17 @@ static struct amba_device *amba_devs[] __initdata = {
 	&clcd_device,
 };
 
+static void __init intcp_init_early(void)
+{
+	clkdev_add_table(cp_lookups, ARRAY_SIZE(cp_lookups));
+
+	integrator_init_early();
+}
+
 static void __init intcp_init(void)
 {
 	int i;
 
-	clkdev_add_table(cp_lookups, ARRAY_SIZE(cp_lookups));
 	platform_add_devices(intcp_devs, ARRAY_SIZE(intcp_devs));
 
 	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
@@ -554,8 +560,9 @@ static struct sys_timer cp_timer = {
 MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 	.boot_params	= 0x00000100,
-	.map_io		= intcp_map_io,
 	.reserve	= integrator_reserve,
+	.map_io		= intcp_map_io,
+	.init_early	= intcp_init_early,
 	.init_irq	= intcp_init_irq,
 	.timer		= &cp_timer,
 	.init_machine	= intcp_init,
-- 
1.6.2.5

[PATCH 01/11] ARM: integrator: use new init_early for clock tree init

[Rob Herring]

Russell,

On 01/27/2011 07:46 AM, Russell King - ARM Linux wrote:
> Initialize the clock tree early.
>
> Signed-off-by: Russell King<rmk+kernel@arm.linux.org.uk>
> ---
>   arch/arm/mach-integrator/common.h        |    1 +
>   arch/arm/mach-integrator/core.c          |    7 +++++--
>   arch/arm/mach-integrator/integrator_ap.c |    3 ++-
>   arch/arm/mach-integrator/integrator_cp.c |   11 +++++++++--
>   4 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
> index 5f96e15..a08f9b0 100644
> --- a/arch/arm/mach-integrator/common.h
> +++ b/arch/arm/mach-integrator/common.h
> @@ -1 +1,2 @@
> +void integrator_init_early(void);
>   void integrator_reserve(void);
> diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
> index b8e884b..77315b9 100644
> --- a/arch/arm/mach-integrator/core.c
> +++ b/arch/arm/mach-integrator/core.c
> @@ -144,12 +144,15 @@ static struct clk_lookup lookups[] = {
>   	}
>   };
>
> +void __init integrator_init_early(void)
> +{
> +	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
> +}
> +

One potential issue with init_early is kmalloc is not up yet. So moving 
clock init here will be an issue when/if clocks are converted to device 
tree or if any platforms do dynamic allocations for their clock tree.

Rob

[PATCH 01/11] ARM: integrator: use new init_early for clock tree init

[Grant Likely]

On Fri, Feb 4, 2011 at 12:27 PM, Rob Herring <robherring2@gmail.com> wrote:
> Russell,
>
> On 01/27/2011 07:46 AM, Russell King - ARM Linux wrote:
>>
>> Initialize the clock tree early.
>>
>> Signed-off-by: Russell King<rmk+kernel@arm.linux.org.uk>
>> ---
>> ?arch/arm/mach-integrator/common.h ? ? ? ?| ? ?1 +
>> ?arch/arm/mach-integrator/core.c ? ? ? ? ?| ? ?7 +++++--
>> ?arch/arm/mach-integrator/integrator_ap.c | ? ?3 ++-
>> ?arch/arm/mach-integrator/integrator_cp.c | ? 11 +++++++++--
>> ?4 files changed, 17 insertions(+), 5 deletions(-)
>>
>> diff --git a/arch/arm/mach-integrator/common.h
>> b/arch/arm/mach-integrator/common.h
>> index 5f96e15..a08f9b0 100644
>> --- a/arch/arm/mach-integrator/common.h
>> +++ b/arch/arm/mach-integrator/common.h
>> @@ -1 +1,2 @@
>> +void integrator_init_early(void);
>> ?void integrator_reserve(void);
>> diff --git a/arch/arm/mach-integrator/core.c
>> b/arch/arm/mach-integrator/core.c
>> index b8e884b..77315b9 100644
>> --- a/arch/arm/mach-integrator/core.c
>> +++ b/arch/arm/mach-integrator/core.c
>> @@ -144,12 +144,15 @@ static struct clk_lookup lookups[] = {
>> ? ? ? ?}
>> ?};
>>
>> +void __init integrator_init_early(void)
>> +{
>> + ? ? ? clkdev_add_table(lookups, ARRAY_SIZE(lookups));
>> +}
>> +
>
> One potential issue with init_early is kmalloc is not up yet. So moving
> clock init here will be an issue when/if clocks are converted to device tree
> or if any platforms do dynamic allocations for their clock tree.

If needed we can do alloc_bootmem().  I don't see this as a showstopper.

g.

>
> Rob
>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

[PATCH 01/11] ARM: integrator: use new init_early for clock tree init

[Russell King - ARM Linux]

On Fri, Feb 04, 2011 at 01:27:20PM -0600, Rob Herring wrote:
> Russell,
>
> On 01/27/2011 07:46 AM, Russell King - ARM Linux wrote:
>> Initialize the clock tree early.
>>
>> Signed-off-by: Russell King<rmk+kernel@arm.linux.org.uk>
>> ---
>>   arch/arm/mach-integrator/common.h        |    1 +
>>   arch/arm/mach-integrator/core.c          |    7 +++++--
>>   arch/arm/mach-integrator/integrator_ap.c |    3 ++-
>>   arch/arm/mach-integrator/integrator_cp.c |   11 +++++++++--
>>   4 files changed, 17 insertions(+), 5 deletions(-)
>>
>> diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
>> index 5f96e15..a08f9b0 100644
>> --- a/arch/arm/mach-integrator/common.h
>> +++ b/arch/arm/mach-integrator/common.h
>> @@ -1 +1,2 @@
>> +void integrator_init_early(void);
>>   void integrator_reserve(void);
>> diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
>> index b8e884b..77315b9 100644
>> --- a/arch/arm/mach-integrator/core.c
>> +++ b/arch/arm/mach-integrator/core.c
>> @@ -144,12 +144,15 @@ static struct clk_lookup lookups[] = {
>>   	}
>>   };
>>
>> +void __init integrator_init_early(void)
>> +{
>> +	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
>> +}
>> +
>
> One potential issue with init_early is kmalloc is not up yet. So moving  
> clock init here will be an issue when/if clocks are converted to device  
> tree or if any platforms do dynamic allocations for their clock tree.

That can't be avoided, because the long term plan is to move the sp804
and twd timers over to using the clk API - and system timers are
initialized prior to kmalloc.

[PATCH 01/11] ARM: integrator: use new init_early for clock tree init

[Rob Herring]

Russell,

On 02/04/2011 01:34 PM, Russell King - ARM Linux wrote:
> On Fri, Feb 04, 2011 at 01:27:20PM -0600, Rob Herring wrote:
>> Russell,
>>
>> On 01/27/2011 07:46 AM, Russell King - ARM Linux wrote:
>>> Initialize the clock tree early.
>>>
>>> Signed-off-by: Russell King<rmk+kernel@arm.linux.org.uk>
>>> ---
>>>    arch/arm/mach-integrator/common.h        |    1 +
>>>    arch/arm/mach-integrator/core.c          |    7 +++++--
>>>    arch/arm/mach-integrator/integrator_ap.c |    3 ++-
>>>    arch/arm/mach-integrator/integrator_cp.c |   11 +++++++++--
>>>    4 files changed, 17 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
>>> index 5f96e15..a08f9b0 100644
>>> --- a/arch/arm/mach-integrator/common.h
>>> +++ b/arch/arm/mach-integrator/common.h
>>> @@ -1 +1,2 @@
>>> +void integrator_init_early(void);
>>>    void integrator_reserve(void);
>>> diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
>>> index b8e884b..77315b9 100644
>>> --- a/arch/arm/mach-integrator/core.c
>>> +++ b/arch/arm/mach-integrator/core.c
>>> @@ -144,12 +144,15 @@ static struct clk_lookup lookups[] = {
>>>    	}
>>>    };
>>>
>>> +void __init integrator_init_early(void)
>>> +{
>>> +	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
>>> +}
>>> +
>>
>> One potential issue with init_early is kmalloc is not up yet. So moving
>> clock init here will be an issue when/if clocks are converted to device
>> tree or if any platforms do dynamic allocations for their clock tree.
>
> That can't be avoided, because the long term plan is to move the sp804
> and twd timers over to using the clk API - and system timers are
> initialized prior to kmalloc.

setup_arch is before mm_init, and init_IRQ and time_init are after 
mm_init. My testing shows OF clock init works fine in the timer init.

Rob

[PATCH 01/11] ARM: integrator: use new init_early for clock tree init

[Russell King - ARM Linux]

On Fri, Feb 04, 2011 at 01:53:12PM -0600, Rob Herring wrote:
> Russell,
>
> On 02/04/2011 01:34 PM, Russell King - ARM Linux wrote:
>> On Fri, Feb 04, 2011 at 01:27:20PM -0600, Rob Herring wrote:
>>> Russell,
>>>
>>> On 01/27/2011 07:46 AM, Russell King - ARM Linux wrote:
>>>> Initialize the clock tree early.
>>>>
>>>> Signed-off-by: Russell King<rmk+kernel@arm.linux.org.uk>
>>>> ---
>>>>    arch/arm/mach-integrator/common.h        |    1 +
>>>>    arch/arm/mach-integrator/core.c          |    7 +++++--
>>>>    arch/arm/mach-integrator/integrator_ap.c |    3 ++-
>>>>    arch/arm/mach-integrator/integrator_cp.c |   11 +++++++++--
>>>>    4 files changed, 17 insertions(+), 5 deletions(-)
>>>>
>>>> diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
>>>> index 5f96e15..a08f9b0 100644
>>>> --- a/arch/arm/mach-integrator/common.h
>>>> +++ b/arch/arm/mach-integrator/common.h
>>>> @@ -1 +1,2 @@
>>>> +void integrator_init_early(void);
>>>>    void integrator_reserve(void);
>>>> diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
>>>> index b8e884b..77315b9 100644
>>>> --- a/arch/arm/mach-integrator/core.c
>>>> +++ b/arch/arm/mach-integrator/core.c
>>>> @@ -144,12 +144,15 @@ static struct clk_lookup lookups[] = {
>>>>    	}
>>>>    };
>>>>
>>>> +void __init integrator_init_early(void)
>>>> +{
>>>> +	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
>>>> +}
>>>> +
>>>
>>> One potential issue with init_early is kmalloc is not up yet. So moving
>>> clock init here will be an issue when/if clocks are converted to device
>>> tree or if any platforms do dynamic allocations for their clock tree.
>>
>> That can't be avoided, because the long term plan is to move the sp804
>> and twd timers over to using the clk API - and system timers are
>> initialized prior to kmalloc.
>
> setup_arch is before mm_init, and init_IRQ and time_init are after  
> mm_init. My testing shows OF clock init works fine in the timer init.

The general point still applies.

We can either leave stuff as is and bodgerate sp804 and twd so that we
sort of sometimes use the clk API to maybe get the clock rate for these
devices on some platforms, or we can move everyone over.

I don't regard sticking clk API initialization into stuff like .map_io
(as some platforms do), timer initialization (like other platforms do)
or an initcall as sane.

In any case, clkdev stuff is static based lookups, not DT based lookups.
So surely the clkdev stuff shouldn't be used with DT lookups?

[PATCH 02/11] ARM: versatile: use new init_early for clock tree and sched_clock init

[Russell King - ARM Linux]

Initialize the clock tree and our sched_clock() early.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-versatile/core.c         |   23 +++++++++++------------
 arch/arm/mach-versatile/core.h         |    1 +
 arch/arm/mach-versatile/versatile_ab.c |    1 +
 arch/arm/mach-versatile/versatile_pb.c |    1 +
 4 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index b4f1f17..606e046 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -762,14 +762,21 @@ static void versatile_leds_event(led_event_t ledevt)
 }
 #endif	/* CONFIG_LEDS */
 
-void __init versatile_init(void)
+/* Early initializations */
+void __init versatile_init_early(void)
 {
-	int i;
-
-	osc4_clk.vcoreg	= __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_OSCCLCD_OFFSET;
+	void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
 
+	osc4_clk.vcoreg	= sys + VERSATILE_SYS_OSCCLCD_OFFSET;
 	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
 
+	versatile_sched_clock_init(sys + VERSATILE_SYS_24MHz_OFFSET, 24000000);
+}
+
+void __init versatile_init(void)
+{
+	int i;
+
 	platform_device_register(&versatile_flash_device);
 	platform_device_register(&versatile_i2c_device);
 	platform_device_register(&smc91x_device);
@@ -786,12 +793,6 @@ void __init versatile_init(void)
 }
 
 /*
- * The sched_clock counter
- */
-#define REFCOUNTER		(__io_address(VERSATILE_SYS_BASE) + \
-				 VERSATILE_SYS_24MHz_OFFSET)
-
-/*
  * Where is the timer (VA)?
  */
 #define TIMER0_VA_BASE		 __io_address(VERSATILE_TIMER0_1_BASE)
@@ -806,8 +807,6 @@ static void __init versatile_timer_init(void)
 {
 	u32 val;
 
-	versatile_sched_clock_init(REFCOUNTER, 24000000);
-
 	/* 
 	 * set clock frequency: 
 	 *	VERSATILE_REFCLK is 32KHz
diff --git a/arch/arm/mach-versatile/core.h b/arch/arm/mach-versatile/core.h
index 9d39886..e04768a 100644
--- a/arch/arm/mach-versatile/core.h
+++ b/arch/arm/mach-versatile/core.h
@@ -25,6 +25,7 @@
 #include <linux/amba/bus.h>
 
 extern void __init versatile_init(void);
+extern void __init versatile_init_early(void);
 extern void __init versatile_init_irq(void);
 extern void __init versatile_map_io(void);
 extern struct sys_timer versatile_timer;
diff --git a/arch/arm/mach-versatile/versatile_ab.c b/arch/arm/mach-versatile/versatile_ab.c
index aa9730f..f8ae64b 100644
--- a/arch/arm/mach-versatile/versatile_ab.c
+++ b/arch/arm/mach-versatile/versatile_ab.c
@@ -37,6 +37,7 @@ MACHINE_START(VERSATILE_AB, "ARM-Versatile AB")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 	.boot_params	= 0x00000100,
 	.map_io		= versatile_map_io,
+	.init_early	= versatile_init_early,
 	.init_irq	= versatile_init_irq,
 	.timer		= &versatile_timer,
 	.init_machine	= versatile_init,
diff --git a/arch/arm/mach-versatile/versatile_pb.c b/arch/arm/mach-versatile/versatile_pb.c
index bf46964..97fb306 100644
--- a/arch/arm/mach-versatile/versatile_pb.c
+++ b/arch/arm/mach-versatile/versatile_pb.c
@@ -110,6 +110,7 @@ MACHINE_START(VERSATILE_PB, "ARM-Versatile PB")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
 	.boot_params	= 0x00000100,
 	.map_io		= versatile_map_io,
+	.init_early	= versatile_init_early,
 	.init_irq	= versatile_init_irq,
 	.timer		= &versatile_timer,
 	.init_machine	= versatile_pb_init,
-- 
1.6.2.5

[PATCH 03/11] ARM: realview: use new init_early for clock tree and sched_clock init

[Russell King - ARM Linux]

Initialize the clock tree and our sched_clock() early.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-realview/core.c            |   19 ++++++-------------
 arch/arm/mach-realview/core.h            |    1 +
 arch/arm/mach-realview/realview_eb.c     |    1 +
 arch/arm/mach-realview/realview_pb1176.c |    1 +
 arch/arm/mach-realview/realview_pb11mp.c |    1 +
 arch/arm/mach-realview/realview_pba8.c   |    1 +
 arch/arm/mach-realview/realview_pbx.c    |    1 +
 7 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index a18a5a6..75dbc87 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -360,18 +360,19 @@ static struct clk_lookup lookups[] = {
 	}
 };
 
-static int __init clk_init(void)
+void __init realview_init_early(void)
 {
+	void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
+
 	if (machine_is_realview_pb1176())
-		oscvco_clk.vcoreg = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_OSC0_OFFSET;
+		oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC0_OFFSET;
 	else
-		oscvco_clk.vcoreg = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_OSC4_OFFSET;
+		oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC4_OFFSET;
 
 	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
 
-	return 0;
+	versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
 }
-core_initcall(clk_init);
 
 /*
  * CLCD support.
@@ -510,12 +511,6 @@ void realview_leds_event(led_event_t ledevt)
 #endif	/* CONFIG_LEDS */
 
 /*
- * The sched_clock counter
- */
-#define REFCOUNTER		(__io_address(REALVIEW_SYS_BASE) + \
-				 REALVIEW_SYS_24MHz_OFFSET)
-
-/*
  * Where is the timer (VA)?
  */
 void __iomem *timer0_va_base;
@@ -530,8 +525,6 @@ void __init realview_timer_init(unsigned int timer_irq)
 {
 	u32 val;
 
-	versatile_sched_clock_init(REFCOUNTER, 24000000);
-
 	/* 
 	 * set clock frequency: 
 	 *	REALVIEW_REFCLK is 32KHz
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 693239d..27c9273 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -63,6 +63,7 @@ extern void realview_timer_init(unsigned int timer_irq);
 extern int realview_flash_register(struct resource *res, u32 num);
 extern int realview_eth_register(const char *name, struct resource *res);
 extern int realview_usb_register(struct resource *res);
+extern void realview_init_early(void);
 extern void realview_fixup(struct machine_desc *mdesc, struct tag *tags,
 			   char **from, struct meminfo *meminfo);
 extern void (*realview_reset)(char);
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 6ef5c5e..c00e527 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -487,6 +487,7 @@ MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_fixup,
 	.map_io		= realview_eb_map_io,
+	.init_early	= realview_init_early,
 	.init_irq	= gic_init_irq,
 	.timer		= &realview_eb_timer,
 	.init_machine	= realview_eb_init,
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index cbdc97a..f0447bb 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -382,6 +382,7 @@ MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_pb1176_fixup,
 	.map_io		= realview_pb1176_map_io,
+	.init_early	= realview_init_early,
 	.init_irq	= gic_init_irq,
 	.timer		= &realview_pb1176_timer,
 	.init_machine	= realview_pb1176_init,
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 8e8ab7d..3b4f788 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -384,6 +384,7 @@ MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_fixup,
 	.map_io		= realview_pb11mp_map_io,
+	.init_early	= realview_init_early,
 	.init_irq	= gic_init_irq,
 	.timer		= &realview_pb11mp_timer,
 	.init_machine	= realview_pb11mp_init,
diff --git a/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index 841118e..f98d4fa 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/arch/arm/mach-realview/realview_pba8.c
@@ -334,6 +334,7 @@ MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_fixup,
 	.map_io		= realview_pba8_map_io,
+	.init_early	= realview_init_early,
 	.init_irq	= gic_init_irq,
 	.timer		= &realview_pba8_timer,
 	.init_machine	= realview_pba8_init,
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index 02b755b..b0521e1 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -417,6 +417,7 @@ MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_pbx_fixup,
 	.map_io		= realview_pbx_map_io,
+	.init_early	= realview_init_early,
 	.init_irq	= gic_init_irq,
 	.timer		= &realview_pbx_timer,
 	.init_machine	= realview_pbx_init,
-- 
1.6.2.5

[PATCH 04/11] ARM: vexpress: use new init_early for clock tree and sched_clock init

[Russell King - ARM Linux]

Initialize the clock tree and our sched_clock() early.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-vexpress/core.h     |    1 +
 arch/arm/mach-vexpress/ct-ca9x4.c |   10 ++++++++--
 arch/arm/mach-vexpress/v2m.c      |    6 ++++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-vexpress/core.h b/arch/arm/mach-vexpress/core.h
index 362780d..e0312a1 100644
--- a/arch/arm/mach-vexpress/core.h
+++ b/arch/arm/mach-vexpress/core.h
@@ -21,4 +21,5 @@ struct amba_device name##_device = {		\
 struct map_desc;
 
 void v2m_map_io(struct map_desc *tile, size_t num);
+void v2m_init_early(void);
 extern struct sys_timer v2m_timer;
diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c
index 27baed1..ff48ebc 100644
--- a/arch/arm/mach-vexpress/ct-ca9x4.c
+++ b/arch/arm/mach-vexpress/ct-ca9x4.c
@@ -180,6 +180,13 @@ static struct platform_device pmu_device = {
 	.resource	= pmu_resources,
 };
 
+static void __init ct_ca9x4_init_early(void)
+{
+	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+	v2m_init_early();
+}
+
 static void __init ct_ca9x4_init(void)
 {
 	int i;
@@ -194,8 +201,6 @@ static void __init ct_ca9x4_init(void)
 	l2x0_init(l2x0_base, 0x00400000, 0xfe0fffff);
 #endif
 
-	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
-
 	for (i = 0; i < ARRAY_SIZE(ct_ca9x4_amba_devs); i++)
 		amba_device_register(ct_ca9x4_amba_devs[i], &iomem_resource);
 
@@ -206,6 +211,7 @@ MACHINE_START(VEXPRESS, "ARM-Versatile Express CA9x4")
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.map_io		= ct_ca9x4_map_io,
 	.init_irq	= ct_ca9x4_init_irq,
+	.init_early	= ct_ca9x4_init_early,
 #if 0
 	.timer		= &ct_ca9x4_timer,
 #else
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index f35d646..63ef663 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -49,13 +49,15 @@ void __init v2m_map_io(struct map_desc *tile, size_t num)
 	iotable_init(tile, num);
 }
 
+void __init v2m_init_early(void)
+{
+	versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
+}
 
 static void __init v2m_timer_init(void)
 {
 	u32 scctrl;
 
-	versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
-
 	/* Select 1MHz TIMCLK as the reference clock for SP804 timers */
 	scctrl = readl(MMIO_P2V(V2M_SYSCTL + SCCTRL));
 	scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;
-- 
1.6.2.5

[PATCH 05/11] ARM: versatile: remove old AMBA device DMA definitions

[Russell King - ARM Linux]

The AMBA DMA macro definitions are not used, and the AMBA Primecell DMA
support makes no use of them either, so they can be removed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-versatile/core.c         |   18 ------------------
 arch/arm/mach-versatile/core.h         |    1 -
 arch/arm/mach-versatile/versatile_pb.c |    5 -----
 3 files changed, 0 insertions(+), 24 deletions(-)

diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index 606e046..630a1c9 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -634,53 +634,35 @@ static struct pl022_ssp_controller ssp0_plat_data = {
 };
 
 #define AACI_IRQ	{ IRQ_AACI, NO_IRQ }
-#define AACI_DMA	{ 0x80, 0x81 }
 #define MMCI0_IRQ	{ IRQ_MMCI0A,IRQ_SIC_MMCI0B }
-#define MMCI0_DMA	{ 0x84, 0 }
 #define KMI0_IRQ	{ IRQ_SIC_KMI0, NO_IRQ }
-#define KMI0_DMA	{ 0, 0 }
 #define KMI1_IRQ	{ IRQ_SIC_KMI1, NO_IRQ }
-#define KMI1_DMA	{ 0, 0 }
 
 /*
  * These devices are connected directly to the multi-layer AHB switch
  */
 #define SMC_IRQ		{ NO_IRQ, NO_IRQ }
-#define SMC_DMA		{ 0, 0 }
 #define MPMC_IRQ	{ NO_IRQ, NO_IRQ }
-#define MPMC_DMA	{ 0, 0 }
 #define CLCD_IRQ	{ IRQ_CLCDINT, NO_IRQ }
-#define CLCD_DMA	{ 0, 0 }
 #define DMAC_IRQ	{ IRQ_DMAINT, NO_IRQ }
-#define DMAC_DMA	{ 0, 0 }
 
 /*
  * These devices are connected via the core APB bridge
  */
 #define SCTL_IRQ	{ NO_IRQ, NO_IRQ }
-#define SCTL_DMA	{ 0, 0 }
 #define WATCHDOG_IRQ	{ IRQ_WDOGINT, NO_IRQ }
-#define WATCHDOG_DMA	{ 0, 0 }
 #define GPIO0_IRQ	{ IRQ_GPIOINT0, NO_IRQ }
-#define GPIO0_DMA	{ 0, 0 }
 #define GPIO1_IRQ	{ IRQ_GPIOINT1, NO_IRQ }
-#define GPIO1_DMA	{ 0, 0 }
 #define RTC_IRQ		{ IRQ_RTCINT, NO_IRQ }
-#define RTC_DMA		{ 0, 0 }
 
 /*
  * These devices are connected via the DMA APB bridge
  */
 #define SCI_IRQ		{ IRQ_SCIINT, NO_IRQ }
-#define SCI_DMA		{ 7, 6 }
 #define UART0_IRQ	{ IRQ_UARTINT0, NO_IRQ }
-#define UART0_DMA	{ 15, 14 }
 #define UART1_IRQ	{ IRQ_UARTINT1, NO_IRQ }
-#define UART1_DMA	{ 13, 12 }
 #define UART2_IRQ	{ IRQ_UARTINT2, NO_IRQ }
-#define UART2_DMA	{ 11, 10 }
 #define SSP_IRQ		{ IRQ_SSPINT, NO_IRQ }
-#define SSP_DMA		{ 9, 8 }
 
 /* FPGA Primecells */
 AMBA_DEVICE(aaci,  "fpga:04", AACI,     NULL);
diff --git a/arch/arm/mach-versatile/core.h b/arch/arm/mach-versatile/core.h
index e04768a..fd6404e 100644
--- a/arch/arm/mach-versatile/core.h
+++ b/arch/arm/mach-versatile/core.h
@@ -45,7 +45,6 @@ static struct amba_device name##_device = {			\
 	},							\
 	.dma_mask	= ~0,					\
 	.irq		= base##_IRQ,				\
-	/* .dma		= base##_DMA,*/				\
 }
 
 #endif
diff --git a/arch/arm/mach-versatile/versatile_pb.c b/arch/arm/mach-versatile/versatile_pb.c
index 97fb306..37c23df 100644
--- a/arch/arm/mach-versatile/versatile_pb.c
+++ b/arch/arm/mach-versatile/versatile_pb.c
@@ -59,19 +59,14 @@ static struct pl061_platform_data gpio3_plat_data = {
 };
 
 #define UART3_IRQ	{ IRQ_SIC_UART3, NO_IRQ }
-#define UART3_DMA	{ 0x86, 0x87 }
 #define SCI1_IRQ	{ IRQ_SIC_SCI3, NO_IRQ }
-#define SCI1_DMA	{ 0x88, 0x89 }
 #define MMCI1_IRQ	{ IRQ_MMCI1A, IRQ_SIC_MMCI1B }
-#define MMCI1_DMA	{ 0x85, 0 }
 
 /*
  * These devices are connected via the core APB bridge
  */
 #define GPIO2_IRQ	{ IRQ_GPIOINT2, NO_IRQ }
-#define GPIO2_DMA	{ 0, 0 }
 #define GPIO3_IRQ	{ IRQ_GPIOINT3, NO_IRQ }
-#define GPIO3_DMA	{ 0, 0 }
 
 /*
  * These devices are connected via the DMA APB bridge
-- 
1.6.2.5

[PATCH 06/11] ARM: realview: remove old AMBA device DMA definitions

[Russell King - ARM Linux]

The AMBA DMA macro definitions are not used, and the AMBA Primecell DMA
support makes no use of them either, so they can be removed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-realview/core.h            |    1 -
 arch/arm/mach-realview/realview_eb.c     |   21 ---------------------
 arch/arm/mach-realview/realview_pb1176.c |   21 ---------------------
 arch/arm/mach-realview/realview_pb11mp.c |   21 ---------------------
 arch/arm/mach-realview/realview_pba8.c   |   21 ---------------------
 arch/arm/mach-realview/realview_pbx.c    |   21 ---------------------
 6 files changed, 0 insertions(+), 106 deletions(-)

diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 27c9273..5c83d1e 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -42,7 +42,6 @@ static struct amba_device name##_device = {			\
 	},							\
 	.dma_mask	= ~0,					\
 	.irq		= base##_IRQ,				\
-	/* .dma		= base##_DMA,*/				\
 }
 
 struct machine_desc;
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index c00e527..d0f851b 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -144,60 +144,39 @@ static struct pl022_ssp_controller ssp0_plat_data = {
  * These devices are connected via the core APB bridge
  */
 #define GPIO2_IRQ	{ IRQ_EB_GPIO2, NO_IRQ }
-#define GPIO2_DMA	{ 0, 0 }
 #define GPIO3_IRQ	{ IRQ_EB_GPIO3, NO_IRQ }
-#define GPIO3_DMA	{ 0, 0 }
 
 #define AACI_IRQ	{ IRQ_EB_AACI, NO_IRQ }
-#define AACI_DMA	{ 0x80, 0x81 }
 #define MMCI0_IRQ	{ IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
-#define MMCI0_DMA	{ 0x84, 0 }
 #define KMI0_IRQ	{ IRQ_EB_KMI0, NO_IRQ }
-#define KMI0_DMA	{ 0, 0 }
 #define KMI1_IRQ	{ IRQ_EB_KMI1, NO_IRQ }
-#define KMI1_DMA	{ 0, 0 }
 
 /*
  * These devices are connected directly to the multi-layer AHB switch
  */
 #define EB_SMC_IRQ	{ NO_IRQ, NO_IRQ }
-#define EB_SMC_DMA	{ 0, 0 }
 #define MPMC_IRQ	{ NO_IRQ, NO_IRQ }
-#define MPMC_DMA	{ 0, 0 }
 #define EB_CLCD_IRQ	{ IRQ_EB_CLCD, NO_IRQ }
-#define EB_CLCD_DMA	{ 0, 0 }
 #define DMAC_IRQ	{ IRQ_EB_DMA, NO_IRQ }
-#define DMAC_DMA	{ 0, 0 }
 
 /*
  * These devices are connected via the core APB bridge
  */
 #define SCTL_IRQ	{ NO_IRQ, NO_IRQ }
-#define SCTL_DMA	{ 0, 0 }
 #define EB_WATCHDOG_IRQ	{ IRQ_EB_WDOG, NO_IRQ }
-#define EB_WATCHDOG_DMA	{ 0, 0 }
 #define EB_GPIO0_IRQ	{ IRQ_EB_GPIO0, NO_IRQ }
-#define EB_GPIO0_DMA	{ 0, 0 }
 #define GPIO1_IRQ	{ IRQ_EB_GPIO1, NO_IRQ }
-#define GPIO1_DMA	{ 0, 0 }
 #define EB_RTC_IRQ	{ IRQ_EB_RTC, NO_IRQ }
-#define EB_RTC_DMA	{ 0, 0 }
 
 /*
  * These devices are connected via the DMA APB bridge
  */
 #define SCI_IRQ		{ IRQ_EB_SCI, NO_IRQ }
-#define SCI_DMA		{ 7, 6 }
 #define EB_UART0_IRQ	{ IRQ_EB_UART0, NO_IRQ }
-#define EB_UART0_DMA	{ 15, 14 }
 #define EB_UART1_IRQ	{ IRQ_EB_UART1, NO_IRQ }
-#define EB_UART1_DMA	{ 13, 12 }
 #define EB_UART2_IRQ	{ IRQ_EB_UART2, NO_IRQ }
-#define EB_UART2_DMA	{ 11, 10 }
 #define EB_UART3_IRQ	{ IRQ_EB_UART3, NO_IRQ }
-#define EB_UART3_DMA	{ 0x86, 0x87 }
 #define EB_SSP_IRQ	{ IRQ_EB_SSP, NO_IRQ }
-#define EB_SSP_DMA	{ 9, 8 }
 
 /* FPGA Primecells */
 AMBA_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index f0447bb..61f6a9d 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -134,47 +134,26 @@ static struct pl022_ssp_controller ssp0_plat_data = {
  * RealView PB1176 AMBA devices
  */
 #define GPIO2_IRQ	{ IRQ_PB1176_GPIO2, NO_IRQ }
-#define GPIO2_DMA	{ 0, 0 }
 #define GPIO3_IRQ	{ IRQ_PB1176_GPIO3, NO_IRQ }
-#define GPIO3_DMA	{ 0, 0 }
 #define AACI_IRQ	{ IRQ_PB1176_AACI, NO_IRQ }
-#define AACI_DMA	{ 0x80, 0x81 }
 #define MMCI0_IRQ	{ IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
-#define MMCI0_DMA	{ 0x84, 0 }
 #define KMI0_IRQ	{ IRQ_PB1176_KMI0, NO_IRQ }
-#define KMI0_DMA	{ 0, 0 }
 #define KMI1_IRQ	{ IRQ_PB1176_KMI1, NO_IRQ }
-#define KMI1_DMA	{ 0, 0 }
 #define PB1176_SMC_IRQ	{ NO_IRQ, NO_IRQ }
-#define PB1176_SMC_DMA	{ 0, 0 }
 #define MPMC_IRQ	{ NO_IRQ, NO_IRQ }
-#define MPMC_DMA	{ 0, 0 }
 #define PB1176_CLCD_IRQ	{ IRQ_DC1176_CLCD, NO_IRQ }
-#define PB1176_CLCD_DMA	{ 0, 0 }
 #define SCTL_IRQ	{ NO_IRQ, NO_IRQ }
-#define SCTL_DMA	{ 0, 0 }
 #define PB1176_WATCHDOG_IRQ	{ IRQ_DC1176_WATCHDOG, NO_IRQ }
-#define PB1176_WATCHDOG_DMA	{ 0, 0 }
 #define PB1176_GPIO0_IRQ	{ IRQ_PB1176_GPIO0, NO_IRQ }
-#define PB1176_GPIO0_DMA	{ 0, 0 }
 #define GPIO1_IRQ	{ IRQ_PB1176_GPIO1, NO_IRQ }
-#define GPIO1_DMA	{ 0, 0 }
 #define PB1176_RTC_IRQ	{ IRQ_DC1176_RTC, NO_IRQ }
-#define PB1176_RTC_DMA	{ 0, 0 }
 #define SCI_IRQ		{ IRQ_PB1176_SCI, NO_IRQ }
-#define SCI_DMA		{ 7, 6 }
 #define PB1176_UART0_IRQ	{ IRQ_DC1176_UART0, NO_IRQ }
-#define PB1176_UART0_DMA	{ 15, 14 }
 #define PB1176_UART1_IRQ	{ IRQ_DC1176_UART1, NO_IRQ }
-#define PB1176_UART1_DMA	{ 13, 12 }
 #define PB1176_UART2_IRQ	{ IRQ_DC1176_UART2, NO_IRQ }
-#define PB1176_UART2_DMA	{ 11, 10 }
 #define PB1176_UART3_IRQ	{ IRQ_DC1176_UART3, NO_IRQ }
-#define PB1176_UART3_DMA	{ 0x86, 0x87 }
 #define PB1176_UART4_IRQ	{ IRQ_PB1176_UART4, NO_IRQ }
-#define PB1176_UART4_DMA	{ 0, 0 }
 #define PB1176_SSP_IRQ		{ IRQ_DC1176_SSP, NO_IRQ }
-#define PB1176_SSP_DMA		{ 9, 8 }
 
 /* FPGA Primecells */
 AMBA_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 3b4f788..27bfeca 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -136,47 +136,26 @@ static struct pl022_ssp_controller ssp0_plat_data = {
  */
 
 #define GPIO2_IRQ		{ IRQ_PB11MP_GPIO2, NO_IRQ }
-#define GPIO2_DMA		{ 0, 0 }
 #define GPIO3_IRQ		{ IRQ_PB11MP_GPIO3, NO_IRQ }
-#define GPIO3_DMA		{ 0, 0 }
 #define AACI_IRQ		{ IRQ_TC11MP_AACI, NO_IRQ }
-#define AACI_DMA		{ 0x80, 0x81 }
 #define MMCI0_IRQ		{ IRQ_TC11MP_MMCI0A, IRQ_TC11MP_MMCI0B }
-#define MMCI0_DMA		{ 0x84, 0 }
 #define KMI0_IRQ		{ IRQ_TC11MP_KMI0, NO_IRQ }
-#define KMI0_DMA		{ 0, 0 }
 #define KMI1_IRQ		{ IRQ_TC11MP_KMI1, NO_IRQ }
-#define KMI1_DMA		{ 0, 0 }
 #define PB11MP_SMC_IRQ		{ NO_IRQ, NO_IRQ }
-#define PB11MP_SMC_DMA		{ 0, 0 }
 #define MPMC_IRQ		{ NO_IRQ, NO_IRQ }
-#define MPMC_DMA		{ 0, 0 }
 #define PB11MP_CLCD_IRQ		{ IRQ_PB11MP_CLCD, NO_IRQ }
-#define PB11MP_CLCD_DMA		{ 0, 0 }
 #define DMAC_IRQ		{ IRQ_PB11MP_DMAC, NO_IRQ }
-#define DMAC_DMA		{ 0, 0 }
 #define SCTL_IRQ		{ NO_IRQ, NO_IRQ }
-#define SCTL_DMA		{ 0, 0 }
 #define PB11MP_WATCHDOG_IRQ	{ IRQ_PB11MP_WATCHDOG, NO_IRQ }
-#define PB11MP_WATCHDOG_DMA	{ 0, 0 }
 #define PB11MP_GPIO0_IRQ	{ IRQ_PB11MP_GPIO0, NO_IRQ }
-#define PB11MP_GPIO0_DMA	{ 0, 0 }
 #define GPIO1_IRQ		{ IRQ_PB11MP_GPIO1, NO_IRQ }
-#define GPIO1_DMA		{ 0, 0 }
 #define PB11MP_RTC_IRQ		{ IRQ_TC11MP_RTC, NO_IRQ }
-#define PB11MP_RTC_DMA		{ 0, 0 }
 #define SCI_IRQ			{ IRQ_PB11MP_SCI, NO_IRQ }
-#define SCI_DMA			{ 7, 6 }
 #define PB11MP_UART0_IRQ	{ IRQ_TC11MP_UART0, NO_IRQ }
-#define PB11MP_UART0_DMA	{ 15, 14 }
 #define PB11MP_UART1_IRQ	{ IRQ_TC11MP_UART1, NO_IRQ }
-#define PB11MP_UART1_DMA	{ 13, 12 }
 #define PB11MP_UART2_IRQ	{ IRQ_PB11MP_UART2, NO_IRQ }
-#define PB11MP_UART2_DMA	{ 11, 10 }
 #define PB11MP_UART3_IRQ	{ IRQ_PB11MP_UART3, NO_IRQ }
-#define PB11MP_UART3_DMA	{ 0x86, 0x87 }
 #define PB11MP_SSP_IRQ		{ IRQ_PB11MP_SSP, NO_IRQ }
-#define PB11MP_SSP_DMA		{ 9, 8 }
 
 /* FPGA Primecells */
 AMBA_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
diff --git a/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index f98d4fa..11972df 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/arch/arm/mach-realview/realview_pba8.c
@@ -126,47 +126,26 @@ static struct pl022_ssp_controller ssp0_plat_data = {
  */
 
 #define GPIO2_IRQ		{ IRQ_PBA8_GPIO2, NO_IRQ }
-#define GPIO2_DMA		{ 0, 0 }
 #define GPIO3_IRQ		{ IRQ_PBA8_GPIO3, NO_IRQ }
-#define GPIO3_DMA		{ 0, 0 }
 #define AACI_IRQ		{ IRQ_PBA8_AACI, NO_IRQ }
-#define AACI_DMA		{ 0x80, 0x81 }
 #define MMCI0_IRQ		{ IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
-#define MMCI0_DMA		{ 0x84, 0 }
 #define KMI0_IRQ		{ IRQ_PBA8_KMI0, NO_IRQ }
-#define KMI0_DMA		{ 0, 0 }
 #define KMI1_IRQ		{ IRQ_PBA8_KMI1, NO_IRQ }
-#define KMI1_DMA		{ 0, 0 }
 #define PBA8_SMC_IRQ		{ NO_IRQ, NO_IRQ }
-#define PBA8_SMC_DMA		{ 0, 0 }
 #define MPMC_IRQ		{ NO_IRQ, NO_IRQ }
-#define MPMC_DMA		{ 0, 0 }
 #define PBA8_CLCD_IRQ		{ IRQ_PBA8_CLCD, NO_IRQ }
-#define PBA8_CLCD_DMA		{ 0, 0 }
 #define DMAC_IRQ		{ IRQ_PBA8_DMAC, NO_IRQ }
-#define DMAC_DMA		{ 0, 0 }
 #define SCTL_IRQ		{ NO_IRQ, NO_IRQ }
-#define SCTL_DMA		{ 0, 0 }
 #define PBA8_WATCHDOG_IRQ	{ IRQ_PBA8_WATCHDOG, NO_IRQ }
-#define PBA8_WATCHDOG_DMA	{ 0, 0 }
 #define PBA8_GPIO0_IRQ		{ IRQ_PBA8_GPIO0, NO_IRQ }
-#define PBA8_GPIO0_DMA		{ 0, 0 }
 #define GPIO1_IRQ		{ IRQ_PBA8_GPIO1, NO_IRQ }
-#define GPIO1_DMA		{ 0, 0 }
 #define PBA8_RTC_IRQ		{ IRQ_PBA8_RTC, NO_IRQ }
-#define PBA8_RTC_DMA		{ 0, 0 }
 #define SCI_IRQ			{ IRQ_PBA8_SCI, NO_IRQ }
-#define SCI_DMA			{ 7, 6 }
 #define PBA8_UART0_IRQ		{ IRQ_PBA8_UART0, NO_IRQ }
-#define PBA8_UART0_DMA		{ 15, 14 }
 #define PBA8_UART1_IRQ		{ IRQ_PBA8_UART1, NO_IRQ }
-#define PBA8_UART1_DMA		{ 13, 12 }
 #define PBA8_UART2_IRQ		{ IRQ_PBA8_UART2, NO_IRQ }
-#define PBA8_UART2_DMA		{ 11, 10 }
 #define PBA8_UART3_IRQ		{ IRQ_PBA8_UART3, NO_IRQ }
-#define PBA8_UART3_DMA		{ 0x86, 0x87 }
 #define PBA8_SSP_IRQ		{ IRQ_PBA8_SSP, NO_IRQ }
-#define PBA8_SSP_DMA		{ 9, 8 }
 
 /* FPGA Primecells */
 AMBA_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index b0521e1..73ab3ca 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -148,47 +148,26 @@ static struct pl022_ssp_controller ssp0_plat_data = {
  */
 
 #define GPIO2_IRQ		{ IRQ_PBX_GPIO2, NO_IRQ }
-#define GPIO2_DMA		{ 0, 0 }
 #define GPIO3_IRQ		{ IRQ_PBX_GPIO3, NO_IRQ }
-#define GPIO3_DMA		{ 0, 0 }
 #define AACI_IRQ		{ IRQ_PBX_AACI, NO_IRQ }
-#define AACI_DMA		{ 0x80, 0x81 }
 #define MMCI0_IRQ		{ IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
-#define MMCI0_DMA		{ 0x84, 0 }
 #define KMI0_IRQ		{ IRQ_PBX_KMI0, NO_IRQ }
-#define KMI0_DMA		{ 0, 0 }
 #define KMI1_IRQ		{ IRQ_PBX_KMI1, NO_IRQ }
-#define KMI1_DMA		{ 0, 0 }
 #define PBX_SMC_IRQ		{ NO_IRQ, NO_IRQ }
-#define PBX_SMC_DMA		{ 0, 0 }
 #define MPMC_IRQ		{ NO_IRQ, NO_IRQ }
-#define MPMC_DMA		{ 0, 0 }
 #define PBX_CLCD_IRQ		{ IRQ_PBX_CLCD, NO_IRQ }
-#define PBX_CLCD_DMA		{ 0, 0 }
 #define DMAC_IRQ		{ IRQ_PBX_DMAC, NO_IRQ }
-#define DMAC_DMA		{ 0, 0 }
 #define SCTL_IRQ		{ NO_IRQ, NO_IRQ }
-#define SCTL_DMA		{ 0, 0 }
 #define PBX_WATCHDOG_IRQ	{ IRQ_PBX_WATCHDOG, NO_IRQ }
-#define PBX_WATCHDOG_DMA	{ 0, 0 }
 #define PBX_GPIO0_IRQ		{ IRQ_PBX_GPIO0, NO_IRQ }
-#define PBX_GPIO0_DMA		{ 0, 0 }
 #define GPIO1_IRQ		{ IRQ_PBX_GPIO1, NO_IRQ }
-#define GPIO1_DMA		{ 0, 0 }
 #define PBX_RTC_IRQ		{ IRQ_PBX_RTC, NO_IRQ }
-#define PBX_RTC_DMA		{ 0, 0 }
 #define SCI_IRQ			{ IRQ_PBX_SCI, NO_IRQ }
-#define SCI_DMA			{ 7, 6 }
 #define PBX_UART0_IRQ		{ IRQ_PBX_UART0, NO_IRQ }
-#define PBX_UART0_DMA		{ 15, 14 }
 #define PBX_UART1_IRQ		{ IRQ_PBX_UART1, NO_IRQ }
-#define PBX_UART1_DMA		{ 13, 12 }
 #define PBX_UART2_IRQ		{ IRQ_PBX_UART2, NO_IRQ }
-#define PBX_UART2_DMA		{ 11, 10 }
 #define PBX_UART3_IRQ		{ IRQ_PBX_UART3, NO_IRQ }
-#define PBX_UART3_DMA		{ 0x86, 0x87 }
 #define PBX_SSP_IRQ		{ IRQ_PBX_SSP, NO_IRQ }
-#define PBX_SSP_DMA		{ 9, 8 }
 
 /* FPGA Primecells */
 AMBA_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
-- 
1.6.2.5

[PATCH 06/11] ARM: realview: remove old AMBA device DMA definitions

[Linus Walleij]

2011/1/27 Russell King - ARM Linux <linux@arm.linux.org.uk>:

> The AMBA DMA macro definitions are not used, and the AMBA Primecell DMA
> support makes no use of them either, so they can be removed.

I've contemplated adding DMA channel info (one tx and one rx channel
should suffice for anything I've seen) and a filter function to
struct amba_device instead of having it as platform data selectively
for each PrimeCell as we have now.

I don't know if it's a good idea.

Yours,
Linus Walleij

[PATCH 07/11] ARM: rationalize versatile family Kconfig/Makefile

[Russell King - ARM Linux]

Move leds and sched_clock build conditionals out of the Makefile into
the Kconfig file.  Move selection of HAVE_SCHED_CLOCK into the
platform Kconfig rather than duplicating it three times in the main
architecture Kconfig.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/Kconfig                 |    3 ---
 arch/arm/plat-versatile/Kconfig  |    8 ++++++++
 arch/arm/plat-versatile/Makefile |   10 +++-------
 3 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4f0e83e..fe8d6fa 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -236,7 +236,6 @@ config ARCH_REALVIEW
 	bool "ARM Ltd. RealView family"
 	select ARM_AMBA
 	select CLKDEV_LOOKUP
-	select HAVE_SCHED_CLOCK
 	select ICST
 	select GENERIC_CLOCKEVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
@@ -252,7 +251,6 @@ config ARCH_VERSATILE
 	select ARM_AMBA
 	select ARM_VIC
 	select CLKDEV_LOOKUP
-	select HAVE_SCHED_CLOCK
 	select ICST
 	select GENERIC_CLOCKEVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
@@ -270,7 +268,6 @@ config ARCH_VEXPRESS
 	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CLK
-	select HAVE_SCHED_CLOCK
 	select HAVE_PATA_PLATFORM
 	select ICST
 	select PLAT_VERSATILE
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index 22540f5..c5e2cd0 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -3,4 +3,12 @@ if PLAT_VERSATILE
 config PLAT_VERSATILE_CLCD
 	bool
 
+config PLAT_VERSATILE_LEDS
+	def_bool y if LEDS_CLASS
+	depends on ARCH_REALVIEW || ARCH_VERSATILE
+
+config PLAT_VERSATILE_SCHED_CLOCK
+	def_bool y if !ARCH_INTEGRATOR
+	select HAVE_SCHED_CLOCK
+
 endif
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index 8b3341c..de6f42f 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -1,9 +1,5 @@
 obj-y	:= clock.o
-ifneq ($(CONFIG_ARCH_INTEGRATOR),y)
-obj-y	+= sched-clock.o
-endif
-ifeq ($(CONFIG_LEDS_CLASS),y)
-obj-$(CONFIG_ARCH_REALVIEW) += leds.o
-obj-$(CONFIG_ARCH_VERSATILE) += leds.o
-endif
 obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o
+obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o
+obj-$(CONFIG_PLAT_VERSATILE_SCHED_CLOCK) += sched-clock.o
+
-- 
1.6.2.5

[PATCH 08/11] ARM: integrator/versatile: consolidate FPGA IRQ handling code

[Russell King - ARM Linux]

Consolidate the FPGA IRQ handling code.  Integrator/AP and Versatile
have one FPGA-based IRQ handler each.  Integrator/CP has three.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/Kconfig                                |    2 +
 arch/arm/mach-integrator/integrator_ap.c        |   41 ++-----
 arch/arm/mach-integrator/integrator_cp.c        |  142 +++++------------------
 arch/arm/mach-versatile/core.c                  |   57 +--------
 arch/arm/mach-versatile/include/mach/hardware.h |    2 +-
 arch/arm/plat-versatile/Kconfig                 |    3 +
 arch/arm/plat-versatile/Makefile                |    1 +
 arch/arm/plat-versatile/fpga-irq.c              |   72 ++++++++++++
 arch/arm/plat-versatile/include/plat/fpga-irq.h |   12 ++
 9 files changed, 140 insertions(+), 192 deletions(-)
 create mode 100644 arch/arm/plat-versatile/fpga-irq.c
 create mode 100644 arch/arm/plat-versatile/include/plat/fpga-irq.h

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index fe8d6fa..a6ccef6 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -229,6 +229,7 @@ config ARCH_INTEGRATOR
 	select ICST
 	select GENERIC_CLOCKEVENTS
 	select PLAT_VERSATILE
+	select PLAT_VERSATILE_FPGA_IRQ
 	help
 	  Support for ARM's Integrator platform.
 
@@ -256,6 +257,7 @@ config ARCH_VERSATILE
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select PLAT_VERSATILE
 	select PLAT_VERSATILE_CLCD
+	select PLAT_VERSATILE_FPGA_IRQ
 	select ARM_TIMER_SP804
 	help
 	  This enables support for ARM Ltd Versatile board.
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 4f06b5d..980803f 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -48,6 +48,8 @@
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
 
+#include <plat/fpga-irq.h>
+
 #include "common.h"
 
 /* 
@@ -57,10 +59,10 @@
  * Setup a VA for the Integrator interrupt controller (for header #0,
  * just for now).
  */
-#define VA_IC_BASE	IO_ADDRESS(INTEGRATOR_IC_BASE) 
-#define VA_SC_BASE	IO_ADDRESS(INTEGRATOR_SC_BASE)
-#define VA_EBI_BASE	IO_ADDRESS(INTEGRATOR_EBI_BASE)
-#define VA_CMIC_BASE	IO_ADDRESS(INTEGRATOR_HDR_IC)
+#define VA_IC_BASE	__io_address(INTEGRATOR_IC_BASE)
+#define VA_SC_BASE	__io_address(INTEGRATOR_SC_BASE)
+#define VA_EBI_BASE	__io_address(INTEGRATOR_EBI_BASE)
+#define VA_CMIC_BASE	__io_address(INTEGRATOR_HDR_IC)
 
 /*
  * Logical      Physical
@@ -156,27 +158,14 @@ static void __init ap_map_io(void)
 
 #define INTEGRATOR_SC_VALID_INT	0x003fffff
 
-static void sc_mask_irq(struct irq_data *d)
-{
-	writel(1 << d->irq, VA_IC_BASE + IRQ_ENABLE_CLEAR);
-}
-
-static void sc_unmask_irq(struct irq_data *d)
-{
-	writel(1 << d->irq, VA_IC_BASE + IRQ_ENABLE_SET);
-}
-
-static struct irq_chip sc_chip = {
-	.name		= "SC",
-	.irq_ack	= sc_mask_irq,
-	.irq_mask	= sc_mask_irq,
-	.irq_unmask	= sc_unmask_irq,
+static struct fpga_irq_data sc_irq_data = {
+	.base		= VA_IC_BASE,
+	.irq_start	= 0,
+	.chip.name	= "SC",
 };
 
 static void __init ap_init_irq(void)
 {
-	unsigned int i;
-
 	/* Disable all interrupts initially. */
 	/* Do the core module ones */
 	writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
@@ -185,13 +174,7 @@ static void __init ap_init_irq(void)
 	writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
 	writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
 
-	for (i = 0; i < NR_IRQS; i++) {
-		if (((1 << i) & INTEGRATOR_SC_VALID_INT) != 0) {
-			set_irq_chip(i, &sc_chip);
-			set_irq_handler(i, handle_level_irq);
-			set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-		}
-	}
+	fpga_irq_init(-1, INTEGRATOR_SC_VALID_INT, &sc_irq_data);
 }
 
 #ifdef CONFIG_PM
@@ -282,7 +265,7 @@ static void ap_flash_exit(void)
 
 static void ap_flash_set_vpp(int on)
 {
-	unsigned long reg = on ? SC_CTRLS : SC_CTRLC;
+	void __iomem *reg = on ? SC_CTRLS : SC_CTRLC;
 
 	writel(INTEGRATOR_SC_CTRL_nFLVPPEN, reg);
 }
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index e6700aa..05da36f 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -43,6 +43,7 @@
 #include <asm/hardware/timer-sp.h>
 
 #include <plat/clcd.h>
+#include <plat/fpga-irq.h>
 
 #include "common.h"
 
@@ -51,9 +52,9 @@
 
 #define INTCP_PA_CLCD_BASE		0xc0000000
 
-#define INTCP_VA_CIC_BASE		IO_ADDRESS(INTEGRATOR_HDR_BASE + 0x40)
-#define INTCP_VA_PIC_BASE		IO_ADDRESS(INTEGRATOR_IC_BASE)
-#define INTCP_VA_SIC_BASE		IO_ADDRESS(INTEGRATOR_CP_SIC_BASE)
+#define INTCP_VA_CIC_BASE		__io_address(INTEGRATOR_HDR_BASE + 0x40)
+#define INTCP_VA_PIC_BASE		__io_address(INTEGRATOR_IC_BASE)
+#define INTCP_VA_SIC_BASE		__io_address(INTEGRATOR_CP_SIC_BASE)
 
 #define INTCP_ETH_SIZE			0x10
 
@@ -141,129 +142,48 @@ static void __init intcp_map_io(void)
 	iotable_init(intcp_io_desc, ARRAY_SIZE(intcp_io_desc));
 }
 
-#define cic_writel	__raw_writel
-#define cic_readl	__raw_readl
-#define pic_writel	__raw_writel
-#define pic_readl	__raw_readl
-#define sic_writel	__raw_writel
-#define sic_readl	__raw_readl
-
-static void cic_mask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_CIC_START;
-	cic_writel(1 << irq, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
-}
-
-static void cic_unmask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_CIC_START;
-	cic_writel(1 << irq, INTCP_VA_CIC_BASE + IRQ_ENABLE_SET);
-}
-
-static struct irq_chip cic_chip = {
-	.name		= "CIC",
-	.irq_ack	= cic_mask_irq,
-	.irq_mask	= cic_mask_irq,
-	.irq_unmask	= cic_unmask_irq,
+static struct fpga_irq_data cic_irq_data = {
+	.base		= INTCP_VA_CIC_BASE,
+	.irq_start	= IRQ_CIC_START,
+	.chip.name	= "CIC",
 };
 
-static void pic_mask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_PIC_START;
-	pic_writel(1 << irq, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
-}
-
-static void pic_unmask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_PIC_START;
-	pic_writel(1 << irq, INTCP_VA_PIC_BASE + IRQ_ENABLE_SET);
-}
-
-static struct irq_chip pic_chip = {
-	.name		= "PIC",
-	.irq_ack	= pic_mask_irq,
-	.irq_mask	= pic_mask_irq,
-	.irq_unmask	= pic_unmask_irq,
+static struct fpga_irq_data pic_irq_data = {
+	.base		= INTCP_VA_PIC_BASE,
+	.irq_start	= IRQ_PIC_START,
+	.chip.name	= "PIC",
 };
 
-static void sic_mask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_SIC_START;
-	sic_writel(1 << irq, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
-}
-
-static void sic_unmask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_SIC_START;
-	sic_writel(1 << irq, INTCP_VA_SIC_BASE + IRQ_ENABLE_SET);
-}
-
-static struct irq_chip sic_chip = {
-	.name		= "SIC",
-	.irq_ack	= sic_mask_irq,
-	.irq_mask	= sic_mask_irq,
-	.irq_unmask	= sic_unmask_irq,
+static struct fpga_irq_data sic_irq_data = {
+	.base		= INTCP_VA_SIC_BASE,
+	.irq_start	= IRQ_SIC_START,
+	.chip.name	= "SIC",
 };
 
-static void
-sic_handle_irq(unsigned int irq, struct irq_desc *desc)
-{
-	unsigned long status = sic_readl(INTCP_VA_SIC_BASE + IRQ_STATUS);
-
-	if (status == 0) {
-		do_bad_IRQ(irq, desc);
-		return;
-	}
-
-	do {
-		irq = ffs(status) - 1;
-		status &= ~(1 << irq);
-
-		irq += IRQ_SIC_START;
-
-		generic_handle_irq(irq);
-	} while (status);
-}
-
 static void __init intcp_init_irq(void)
 {
-	unsigned int i;
+	u32 pic_mask, sic_mask;
+
+	pic_mask = ~((~0u) << (11 - IRQ_PIC_START));
+	pic_mask |= (~((~0u) << (29 - 22))) << 22;
+	sic_mask = ~((~0u) << (1 + IRQ_SIC_END - IRQ_SIC_START));
 
 	/*
 	 * Disable all interrupt sources
 	 */
-	pic_writel(0xffffffff, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
-	pic_writel(0xffffffff, INTCP_VA_PIC_BASE + FIQ_ENABLE_CLEAR);
-
-	for (i = IRQ_PIC_START; i <= IRQ_PIC_END; i++) {
-		if (i == 11)
-			i = 22;
-		if (i == 29)
-			break;
-		set_irq_chip(i, &pic_chip);
-		set_irq_handler(i, handle_level_irq);
-		set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-	}
+	writel(0xffffffff, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
+	writel(0xffffffff, INTCP_VA_PIC_BASE + FIQ_ENABLE_CLEAR);
+	writel(0xffffffff, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
+	writel(0xffffffff, INTCP_VA_CIC_BASE + FIQ_ENABLE_CLEAR);
+	writel(sic_mask, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
+	writel(sic_mask, INTCP_VA_SIC_BASE + FIQ_ENABLE_CLEAR);
 
-	cic_writel(0xffffffff, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
-	cic_writel(0xffffffff, INTCP_VA_CIC_BASE + FIQ_ENABLE_CLEAR);
+	fpga_irq_init(-1, pic_mask, &pic_irq_data);
 
-	for (i = IRQ_CIC_START; i <= IRQ_CIC_END; i++) {
-		set_irq_chip(i, &cic_chip);
-		set_irq_handler(i, handle_level_irq);
-		set_irq_flags(i, IRQF_VALID);
-	}
-
-	sic_writel(0x00000fff, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
-	sic_writel(0x00000fff, INTCP_VA_SIC_BASE + FIQ_ENABLE_CLEAR);
-
-	for (i = IRQ_SIC_START; i <= IRQ_SIC_END; i++) {
-		set_irq_chip(i, &sic_chip);
-		set_irq_handler(i, handle_level_irq);
-		set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-	}
+	fpga_irq_init(-1, ~((~0u) << (1 + IRQ_CIC_END - IRQ_CIC_START)),
+		&cic_irq_data);
 
-	set_irq_chained_handler(IRQ_CP_CPPLDINT, sic_handle_irq);
+	fpga_irq_init(IRQ_CP_CPPLDINT, sic_mask, &sic_irq_data);
 }
 
 /*
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index 630a1c9..eb7ffa0 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -51,6 +51,7 @@
 #include <asm/hardware/timer-sp.h>
 
 #include <plat/clcd.h>
+#include <plat/fpga-irq.h>
 #include <plat/sched_clock.h>
 
 #include "core.h"
@@ -64,47 +65,12 @@
 #define VA_VIC_BASE		__io_address(VERSATILE_VIC_BASE)
 #define VA_SIC_BASE		__io_address(VERSATILE_SIC_BASE)
 
-static void sic_mask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_SIC_START;
-
-	writel(1 << irq, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
-}
-
-static void sic_unmask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq - IRQ_SIC_START;
-
-	writel(1 << irq, VA_SIC_BASE + SIC_IRQ_ENABLE_SET);
-}
-
-static struct irq_chip sic_chip = {
-	.name		= "SIC",
-	.irq_ack	= sic_mask_irq,
-	.irq_mask	= sic_mask_irq,
-	.irq_unmask	= sic_unmask_irq,
+static struct fpga_irq_data sic_irq = {
+	.base		= VA_SIC_BASE,
+	.irq_start	= IRQ_SIC_START,
+	.chip.name	= "SIC",
 };
 
-static void
-sic_handle_irq(unsigned int irq, struct irq_desc *desc)
-{
-	unsigned long status = readl(VA_SIC_BASE + SIC_IRQ_STATUS);
-
-	if (status == 0) {
-		do_bad_IRQ(irq, desc);
-		return;
-	}
-
-	do {
-		irq = ffs(status) - 1;
-		status &= ~(1 << irq);
-
-		irq += IRQ_SIC_START;
-
-		generic_handle_irq(irq);
-	} while (status);
-}
-
 #if 1
 #define IRQ_MMCI0A	IRQ_VICSOURCE22
 #define IRQ_AACI	IRQ_VICSOURCE24
@@ -119,22 +85,11 @@ sic_handle_irq(unsigned int irq, struct irq_desc *desc)
 
 void __init versatile_init_irq(void)
 {
-	unsigned int i;
-
 	vic_init(VA_VIC_BASE, IRQ_VIC_START, ~0, 0);
 
-	set_irq_chained_handler(IRQ_VICSOURCE31, sic_handle_irq);
-
-	/* Do second interrupt controller */
 	writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
 
-	for (i = IRQ_SIC_START; i <= IRQ_SIC_END; i++) {
-		if ((PIC_MASK & (1 << (i - IRQ_SIC_START))) == 0) {
-			set_irq_chip(i, &sic_chip);
-			set_irq_handler(i, handle_level_irq);
-			set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-		}
-	}
+	fpga_irq_init(IRQ_VICSOURCE31, ~PIC_MASK, &sic_irq);
 
 	/*
 	 * Interrupts on secondary controller from 0 to 8 are routed to
diff --git a/arch/arm/mach-versatile/include/mach/hardware.h b/arch/arm/mach-versatile/include/mach/hardware.h
index b5e75bb..6911e1f 100644
--- a/arch/arm/mach-versatile/include/mach/hardware.h
+++ b/arch/arm/mach-versatile/include/mach/hardware.h
@@ -39,6 +39,6 @@
 /* macro to get@IO space when running virtually */
 #define IO_ADDRESS(x)		(((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
 
-#define __io_address(n)		__io(IO_ADDRESS(n))
+#define __io_address(n)		((void __iomem __force *)IO_ADDRESS(n))
 
 #endif
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index c5e2cd0..0b27500 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -3,6 +3,9 @@ if PLAT_VERSATILE
 config PLAT_VERSATILE_CLCD
 	bool
 
+config PLAT_VERSATILE_FPGA_IRQ
+	bool
+
 config PLAT_VERSATILE_LEDS
 	def_bool y if LEDS_CLASS
 	depends on ARCH_REALVIEW || ARCH_VERSATILE
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index de6f42f..41f57f4 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -1,5 +1,6 @@
 obj-y	:= clock.o
 obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o
+obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o
 obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o
 obj-$(CONFIG_PLAT_VERSATILE_SCHED_CLOCK) += sched-clock.o
 
diff --git a/arch/arm/plat-versatile/fpga-irq.c b/arch/arm/plat-versatile/fpga-irq.c
new file mode 100644
index 0000000..31d945d
--- /dev/null
+++ b/arch/arm/plat-versatile/fpga-irq.c
@@ -0,0 +1,72 @@
+/*
+ *  Support for Versatile FPGA-based IRQ controllers
+ */
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <asm/mach/irq.h>
+#include <plat/fpga-irq.h>
+
+#define IRQ_STATUS		0x00
+#define IRQ_RAW_STATUS		0x04
+#define IRQ_ENABLE_SET		0x08
+#define IRQ_ENABLE_CLEAR	0x0c
+
+static void fpga_irq_mask(struct irq_data *d)
+{
+	struct fpga_irq_data *f = irq_data_get_irq_chip_data(d);
+	u32 mask = 1 << (d->irq - f->irq_start);
+
+	writel(mask, f->base + IRQ_ENABLE_CLEAR);
+}
+
+static void fpga_irq_unmask(struct irq_data *d)
+{
+	struct fpga_irq_data *f = irq_data_get_irq_chip_data(d);
+	u32 mask = 1 << (d->irq - f->irq_start);
+
+	writel(mask, f->base + IRQ_ENABLE_SET);
+}
+
+static void fpga_irq_handle(unsigned int irq, struct irq_desc *desc)
+{
+	struct fpga_irq_data *f = get_irq_desc_data(desc);
+	u32 status = readl(f->base + IRQ_STATUS);
+
+	if (status == 0) {
+		do_bad_IRQ(irq, desc);
+		return;
+	}
+
+	do {
+		irq = ffs(status) - 1;
+		status &= ~(1 << irq);
+
+		generic_handle_irq(irq + f->irq_start);
+	} while (status);
+}
+
+void __init fpga_irq_init(int parent_irq, u32 valid, struct fpga_irq_data *f)
+{
+	unsigned int i;
+
+	f->chip.irq_ack = fpga_irq_mask;
+	f->chip.irq_mask = fpga_irq_mask;
+	f->chip.irq_unmask = fpga_irq_unmask;
+
+	if (parent_irq != -1) {
+		set_irq_data(parent_irq, f);
+		set_irq_chained_handler(parent_irq, fpga_irq_handle);
+	}
+
+	for (i = 0; i < 32; i++) {
+		if (valid & (1 << i)) {
+			unsigned int irq = f->irq_start + i;
+
+			set_irq_chip_data(irq, f);
+			set_irq_chip(irq, &f->chip);
+			set_irq_handler(irq, handle_level_irq);
+			set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+		}
+	}
+}
diff --git a/arch/arm/plat-versatile/include/plat/fpga-irq.h b/arch/arm/plat-versatile/include/plat/fpga-irq.h
new file mode 100644
index 0000000..627fafd
--- /dev/null
+++ b/arch/arm/plat-versatile/include/plat/fpga-irq.h
@@ -0,0 +1,12 @@
+#ifndef PLAT_FPGA_IRQ_H
+#define PLAT_FPGA_IRQ_H
+
+struct fpga_irq_data {
+	void __iomem *base;
+	unsigned int irq_start;
+	struct irq_chip chip;
+};
+
+void fpga_irq_init(int, u32, struct fpga_irq_data *);
+
+#endif
-- 
1.6.2.5

[PATCH 09/11] ARM: realview/vexpress: consolidate localtimer support

[Russell King - ARM Linux]

Realview and Versatile Express local timer support is identical, so
consolidate the implementations.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-realview/Makefile      |    1 -
 arch/arm/mach-realview/localtimer.c  |   26 --------------------------
 arch/arm/mach-vexpress/Makefile      |    1 -
 arch/arm/mach-vexpress/localtimer.c  |   26 --------------------------
 arch/arm/plat-versatile/Makefile     |    1 +
 arch/arm/plat-versatile/localtimer.c |   26 ++++++++++++++++++++++++++
 6 files changed, 27 insertions(+), 54 deletions(-)
 delete mode 100644 arch/arm/mach-realview/localtimer.c
 delete mode 100644 arch/arm/mach-vexpress/localtimer.c
 create mode 100644 arch/arm/plat-versatile/localtimer.c

diff --git a/arch/arm/mach-realview/Makefile b/arch/arm/mach-realview/Makefile
index a01b76b..ba85e52 100644
--- a/arch/arm/mach-realview/Makefile
+++ b/arch/arm/mach-realview/Makefile
@@ -10,4 +10,3 @@ obj-$(CONFIG_MACH_REALVIEW_PBA8)	+= realview_pba8.o
 obj-$(CONFIG_MACH_REALVIEW_PBX)		+= realview_pbx.o
 obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
-obj-$(CONFIG_LOCAL_TIMERS)		+= localtimer.o
diff --git a/arch/arm/mach-realview/localtimer.c b/arch/arm/mach-realview/localtimer.c
deleted file mode 100644
index 60b4e11..0000000
--- a/arch/arm/mach-realview/localtimer.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- *  linux/arch/arm/mach-realview/localtimer.c
- *
- *  Copyright (C) 2002 ARM Ltd.
- *  All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/clockchips.h>
-
-#include <asm/irq.h>
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-void __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	evt->irq = IRQ_LOCALTIMER;
-	twd_timer_setup(evt);
-}
diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile
index 2c0ac7d..cfe344e 100644
--- a/arch/arm/mach-vexpress/Makefile
+++ b/arch/arm/mach-vexpress/Makefile
@@ -6,4 +6,3 @@ obj-y					:= v2m.o
 obj-$(CONFIG_ARCH_VEXPRESS_CA9X4)	+= ct-ca9x4.o
 obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
-obj-$(CONFIG_LOCAL_TIMERS)		+= localtimer.o
diff --git a/arch/arm/mach-vexpress/localtimer.c b/arch/arm/mach-vexpress/localtimer.c
deleted file mode 100644
index c0e3a59..0000000
--- a/arch/arm/mach-vexpress/localtimer.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- *  linux/arch/arm/mach-vexpress/localtimer.c
- *
- *  Copyright (C) 2002 ARM Ltd.
- *  All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/clockchips.h>
-
-#include <asm/smp_twd.h>
-#include <asm/localtimer.h>
-#include <mach/irqs.h>
-
-/*
- * Setup the local clock events for a CPU.
- */
-void __cpuinit local_timer_setup(struct clock_event_device *evt)
-{
-	evt->irq = IRQ_LOCALTIMER;
-	twd_timer_setup(evt);
-}
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index 41f57f4..b511abb 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -1,4 +1,5 @@
 obj-y	:= clock.o
+obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
 obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o
 obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o
 obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o
diff --git a/arch/arm/plat-versatile/localtimer.c b/arch/arm/plat-versatile/localtimer.c
new file mode 100644
index 0000000..83ebee5
--- /dev/null
+++ b/arch/arm/plat-versatile/localtimer.c
@@ -0,0 +1,26 @@
+/*
+ *  linux/arch/arm/plat-versatile/localtimer.c
+ *
+ *  Copyright (C) 2002 ARM 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 version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/clockchips.h>
+
+#include <asm/smp_twd.h>
+#include <asm/localtimer.h>
+#include <mach/irqs.h>
+
+/*
+ * Setup the local clock events for a CPU.
+ */
+void __cpuinit local_timer_setup(struct clock_event_device *evt)
+{
+	evt->irq = IRQ_LOCALTIMER;
+	twd_timer_setup(evt);
+}
-- 
1.6.2.5

[PATCH 10/11] ARM: realview/vexpress: consolidate SMP bringup code

[Russell King - ARM Linux]

Realview and Versatile Express share the same SMP bringup code, so
consolidate the two implementations.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-realview/Makefile   |    2 +-
 arch/arm/mach-realview/headsmp.S  |   40 --------------
 arch/arm/mach-realview/platsmp.c  |   98 +---------------------------------
 arch/arm/mach-vexpress/Makefile   |    2 +-
 arch/arm/mach-vexpress/headsmp.S  |   40 --------------
 arch/arm/mach-vexpress/platsmp.c  |   94 +--------------------------------
 arch/arm/plat-versatile/Makefile  |    2 +-
 arch/arm/plat-versatile/headsmp.S |   40 ++++++++++++++
 arch/arm/plat-versatile/platsmp.c |  104 +++++++++++++++++++++++++++++++++++++
 9 files changed, 152 insertions(+), 270 deletions(-)
 delete mode 100644 arch/arm/mach-realview/headsmp.S
 delete mode 100644 arch/arm/mach-vexpress/headsmp.S
 create mode 100644 arch/arm/plat-versatile/headsmp.S
 create mode 100644 arch/arm/plat-versatile/platsmp.c

diff --git a/arch/arm/mach-realview/Makefile b/arch/arm/mach-realview/Makefile
index ba85e52..541fa4c 100644
--- a/arch/arm/mach-realview/Makefile
+++ b/arch/arm/mach-realview/Makefile
@@ -8,5 +8,5 @@ obj-$(CONFIG_MACH_REALVIEW_PB11MP)	+= realview_pb11mp.o
 obj-$(CONFIG_MACH_REALVIEW_PB1176)	+= realview_pb1176.o
 obj-$(CONFIG_MACH_REALVIEW_PBA8)	+= realview_pba8.o
 obj-$(CONFIG_MACH_REALVIEW_PBX)		+= realview_pbx.o
-obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
+obj-$(CONFIG_SMP)			+= platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
diff --git a/arch/arm/mach-realview/headsmp.S b/arch/arm/mach-realview/headsmp.S
deleted file mode 100644
index b34be45..0000000
--- a/arch/arm/mach-realview/headsmp.S
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- *  linux/arch/arm/mach-realview/headsmp.S
- *
- *  Copyright (c) 2003 ARM Limited
- *  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.
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-
-	__INIT
-
-/*
- * Realview specific entry point for secondary CPUs.  This provides
- * a "holding pen" into which all secondary cores are held until we're
- * ready for them to initialise.
- */
-ENTRY(realview_secondary_startup)
-	mrc	p15, 0, r0, c0, c0, 5
-	and	r0, r0, #15
-	adr	r4, 1f
-	ldmia	r4, {r5, r6}
-	sub	r4, r4, r5
-	add	r6, r6, r4
-pen:	ldr	r7, [r6]
-	cmp	r7, r0
-	bne	pen
-
-	/*
-	 * we've been released from the holding pen: secondary_stack
-	 * should now contain the SVC stack for this core
-	 */
-	b	secondary_startup
-
-	.align
-1:	.long	.
-	.long	pen_release
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index 6959d13..2391922 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -10,44 +10,21 @@
  */
 #include <linux/init.h>
 #include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/jiffies.h>
 #include <linux/smp.h>
 #include <linux/io.h>
 
-#include <asm/cacheflush.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
+#include <asm/smp_scu.h>
 #include <asm/unified.h>
 
 #include <mach/board-eb.h>
 #include <mach/board-pb11mp.h>
 #include <mach/board-pbx.h>
-#include <asm/smp_scu.h>
 
 #include "core.h"
 
-extern void realview_secondary_startup(void);
-
-/*
- * control for which core is the next to come out of the secondary
- * boot "holding pen"
- */
-volatile int __cpuinitdata pen_release = -1;
-
-/*
- * Write pen_release in a way that is guaranteed to be visible to all
- * observers, irrespective of whether they're taking part in coherency
- * or not.  This is necessary for the hotplug code to work reliably.
- */
-static void __cpuinit write_pen_release(int val)
-{
-	pen_release = val;
-	smp_wmb();
-	__cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release));
-	outer_clean_range(__pa(&pen_release), __pa(&pen_release + 1));
-}
+extern void versatile_secondary_startup(void);
 
 static void __iomem *scu_base_addr(void)
 {
@@ -62,75 +39,6 @@ static void __iomem *scu_base_addr(void)
 		return (void __iomem *)0;
 }
 
-static DEFINE_SPINLOCK(boot_lock);
-
-void __cpuinit platform_secondary_init(unsigned int cpu)
-{
-	/*
-	 * if any interrupts are already enabled for the primary
-	 * core (e.g. timer irq), then they will not have been enabled
-	 * for us: do so
-	 */
-	gic_secondary_init(0);
-
-	/*
-	 * let the primary processor know we're out of the
-	 * pen, then head off into the C entry point
-	 */
-	write_pen_release(-1);
-
-	/*
-	 * Synchronise with the boot thread.
-	 */
-	spin_lock(&boot_lock);
-	spin_unlock(&boot_lock);
-}
-
-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
-	unsigned long timeout;
-
-	/*
-	 * set synchronisation state between this boot processor
-	 * and the secondary one
-	 */
-	spin_lock(&boot_lock);
-
-	/*
-	 * The secondary processor is waiting to be released from
-	 * the holding pen - release it, then wait for it to flag
-	 * that it has been released by resetting pen_release.
-	 *
-	 * Note that "pen_release" is the hardware CPU ID, whereas
-	 * "cpu" is Linux's internal ID.
-	 */
-	write_pen_release(cpu);
-
-	/*
-	 * Send the secondary CPU a soft interrupt, thereby causing
-	 * the boot monitor to read the system wide flags register,
-	 * and branch to the address found there.
-	 */
-	smp_cross_call(cpumask_of(cpu), 1);
-
-	timeout = jiffies + (1 * HZ);
-	while (time_before(jiffies, timeout)) {
-		smp_rmb();
-		if (pen_release == -1)
-			break;
-
-		udelay(10);
-	}
-
-	/*
-	 * now the secondary core is starting up let it run its
-	 * calibrations, then wait for it to finish
-	 */
-	spin_unlock(&boot_lock);
-
-	return pen_release != -1 ? -ENOSYS : 0;
-}
-
 /*
  * Initialise the CPU possible map early - this describes the CPUs
  * which may be present or become present in the system.
@@ -174,6 +82,6 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
 	 * until it receives a soft interrupt, and then the
 	 * secondary CPU branches to this address.
 	 */
-	__raw_writel(BSYM(virt_to_phys(realview_secondary_startup)),
+	__raw_writel(BSYM(virt_to_phys(versatile_secondary_startup)),
 		     __io_address(REALVIEW_SYS_FLAGSSET));
 }
diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile
index cfe344e..90551b9 100644
--- a/arch/arm/mach-vexpress/Makefile
+++ b/arch/arm/mach-vexpress/Makefile
@@ -4,5 +4,5 @@
 
 obj-y					:= v2m.o
 obj-$(CONFIG_ARCH_VEXPRESS_CA9X4)	+= ct-ca9x4.o
-obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
+obj-$(CONFIG_SMP)			+= platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
diff --git a/arch/arm/mach-vexpress/headsmp.S b/arch/arm/mach-vexpress/headsmp.S
deleted file mode 100644
index 7a3f063..0000000
--- a/arch/arm/mach-vexpress/headsmp.S
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- *  linux/arch/arm/mach-vexpress/headsmp.S
- *
- *  Copyright (c) 2003 ARM Limited
- *  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.
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-
-	__INIT
-
-/*
- * Versatile Express specific entry point for secondary CPUs.  This
- * provides a "holding pen" into which all secondary cores are held
- * until we're ready for them to initialise.
- */
-ENTRY(vexpress_secondary_startup)
-	mrc	p15, 0, r0, c0, c0, 5
-	and	r0, r0, #15
-	adr	r4, 1f
-	ldmia	r4, {r5, r6}
-	sub	r4, r4, r5
-	add	r6, r6, r4
-pen:	ldr	r7, [r6]
-	cmp	r7, r0
-	bne	pen
-
-	/*
-	 * we've been released from the holding pen: secondary_stack
-	 * should now contain the SVC stack for this core
-	 */
-	b	secondary_startup
-
-	.align
-1:	.long	.
-	.long	pen_release
diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
index 634bf1d..1892702 100644
--- a/arch/arm/mach-vexpress/platsmp.c
+++ b/arch/arm/mach-vexpress/platsmp.c
@@ -10,13 +10,9 @@
  */
 #include <linux/init.h>
 #include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/jiffies.h>
 #include <linux/smp.h>
 #include <linux/io.h>
 
-#include <asm/cacheflush.h>
 #include <asm/smp_scu.h>
 #include <asm/unified.h>
 
@@ -26,99 +22,13 @@
 
 #include "core.h"
 
-extern void vexpress_secondary_startup(void);
-
-/*
- * control for which core is the next to come out of the secondary
- * boot "holding pen"
- */
-volatile int __cpuinitdata pen_release = -1;
-
-/*
- * Write pen_release in a way that is guaranteed to be visible to all
- * observers, irrespective of whether they're taking part in coherency
- * or not.  This is necessary for the hotplug code to work reliably.
- */
-static void __cpuinit write_pen_release(int val)
-{
-	pen_release = val;
-	smp_wmb();
-	__cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release));
-	outer_clean_range(__pa(&pen_release), __pa(&pen_release + 1));
-}
+extern void versatile_secondary_startup(void);
 
 static void __iomem *scu_base_addr(void)
 {
 	return MMIO_P2V(A9_MPCORE_SCU);
 }
 
-static DEFINE_SPINLOCK(boot_lock);
-
-void __cpuinit platform_secondary_init(unsigned int cpu)
-{
-	/*
-	 * if any interrupts are already enabled for the primary
-	 * core (e.g. timer irq), then they will not have been enabled
-	 * for us: do so
-	 */
-	gic_secondary_init(0);
-
-	/*
-	 * let the primary processor know we're out of the
-	 * pen, then head off into the C entry point
-	 */
-	write_pen_release(-1);
-
-	/*
-	 * Synchronise with the boot thread.
-	 */
-	spin_lock(&boot_lock);
-	spin_unlock(&boot_lock);
-}
-
-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
-	unsigned long timeout;
-
-	/*
-	 * Set synchronisation state between this boot processor
-	 * and the secondary one
-	 */
-	spin_lock(&boot_lock);
-
-	/*
-	 * This is really belt and braces; we hold unintended secondary
-	 * CPUs in the holding pen until we're ready for them.  However,
-	 * since we haven't sent them a soft interrupt, they shouldn't
-	 * be there.
-	 */
-	write_pen_release(cpu);
-
-	/*
-	 * Send the secondary CPU a soft interrupt, thereby causing
-	 * the boot monitor to read the system wide flags register,
-	 * and branch to the address found there.
-	 */
-	smp_cross_call(cpumask_of(cpu), 1);
-
-	timeout = jiffies + (1 * HZ);
-	while (time_before(jiffies, timeout)) {
-		smp_rmb();
-		if (pen_release == -1)
-			break;
-
-		udelay(10);
-	}
-
-	/*
-	 * now the secondary core is starting up let it run its
-	 * calibrations, then wait for it to finish
-	 */
-	spin_unlock(&boot_lock);
-
-	return pen_release != -1 ? -ENOSYS : 0;
-}
-
 /*
  * Initialise the CPU possible map early - this describes the CPUs
  * which may be present or become present in the system.
@@ -163,6 +73,6 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
 	 * secondary CPU branches to this address.
 	 */
 	writel(~0, MMIO_P2V(V2M_SYS_FLAGSCLR));
-	writel(BSYM(virt_to_phys(vexpress_secondary_startup)),
+	writel(BSYM(virt_to_phys(versatile_secondary_startup)),
 		MMIO_P2V(V2M_SYS_FLAGSSET));
 }
diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile
index b511abb..69714db 100644
--- a/arch/arm/plat-versatile/Makefile
+++ b/arch/arm/plat-versatile/Makefile
@@ -4,4 +4,4 @@ obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o
 obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o
 obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o
 obj-$(CONFIG_PLAT_VERSATILE_SCHED_CLOCK) += sched-clock.o
-
+obj-$(CONFIG_SMP) += headsmp.o platsmp.o
diff --git a/arch/arm/plat-versatile/headsmp.S b/arch/arm/plat-versatile/headsmp.S
new file mode 100644
index 0000000..d397a1f
--- /dev/null
+++ b/arch/arm/plat-versatile/headsmp.S
@@ -0,0 +1,40 @@
+/*
+ *  linux/arch/arm/plat-versatile/headsmp.S
+ *
+ *  Copyright (c) 2003 ARM Limited
+ *  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.
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+
+	__INIT
+
+/*
+ * Realview/Versatile Express specific entry point for secondary CPUs.
+ * This provides a "holding pen" into which all secondary cores are held
+ * until we're ready for them to initialise.
+ */
+ENTRY(versatile_secondary_startup)
+	mrc	p15, 0, r0, c0, c0, 5
+	and	r0, r0, #15
+	adr	r4, 1f
+	ldmia	r4, {r5, r6}
+	sub	r4, r4, r5
+	add	r6, r6, r4
+pen:	ldr	r7, [r6]
+	cmp	r7, r0
+	bne	pen
+
+	/*
+	 * we've been released from the holding pen: secondary_stack
+	 * should now contain the SVC stack for this core
+	 */
+	b	secondary_startup
+
+	.align
+1:	.long	.
+	.long	pen_release
diff --git a/arch/arm/plat-versatile/platsmp.c b/arch/arm/plat-versatile/platsmp.c
new file mode 100644
index 0000000..ba3d471
--- /dev/null
+++ b/arch/arm/plat-versatile/platsmp.c
@@ -0,0 +1,104 @@
+/*
+ *  linux/arch/arm/plat-versatile/platsmp.c
+ *
+ *  Copyright (C) 2002 ARM 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 version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/smp.h>
+
+#include <asm/cacheflush.h>
+
+/*
+ * control for which core is the next to come out of the secondary
+ * boot "holding pen"
+ */
+volatile int __cpuinitdata pen_release = -1;
+
+/*
+ * Write pen_release in a way that is guaranteed to be visible to all
+ * observers, irrespective of whether they're taking part in coherency
+ * or not.  This is necessary for the hotplug code to work reliably.
+ */
+static void __cpuinit write_pen_release(int val)
+{
+	pen_release = val;
+	smp_wmb();
+	__cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release));
+	outer_clean_range(__pa(&pen_release), __pa(&pen_release + 1));
+}
+
+static DEFINE_SPINLOCK(boot_lock);
+
+void __cpuinit platform_secondary_init(unsigned int cpu)
+{
+	/*
+	 * if any interrupts are already enabled for the primary
+	 * core (e.g. timer irq), then they will not have been enabled
+	 * for us: do so
+	 */
+	gic_secondary_init(0);
+
+	/*
+	 * let the primary processor know we're out of the
+	 * pen, then head off into the C entry point
+	 */
+	write_pen_release(-1);
+
+	/*
+	 * Synchronise with the boot thread.
+	 */
+	spin_lock(&boot_lock);
+	spin_unlock(&boot_lock);
+}
+
+int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+	unsigned long timeout;
+
+	/*
+	 * Set synchronisation state between this boot processor
+	 * and the secondary one
+	 */
+	spin_lock(&boot_lock);
+
+	/*
+	 * This is really belt and braces; we hold unintended secondary
+	 * CPUs in the holding pen until we're ready for them.  However,
+	 * since we haven't sent them a soft interrupt, they shouldn't
+	 * be there.
+	 */
+	write_pen_release(cpu);
+
+	/*
+	 * Send the secondary CPU a soft interrupt, thereby causing
+	 * the boot monitor to read the system wide flags register,
+	 * and branch to the address found there.
+	 */
+	smp_cross_call(cpumask_of(cpu), 1);
+
+	timeout = jiffies + (1 * HZ);
+	while (time_before(jiffies, timeout)) {
+		smp_rmb();
+		if (pen_release == -1)
+			break;
+
+		udelay(10);
+	}
+
+	/*
+	 * now the secondary core is starting up let it run its
+	 * calibrations, then wait for it to finish
+	 */
+	spin_unlock(&boot_lock);
+
+	return pen_release != -1 ? -ENOSYS : 0;
+}
-- 
1.6.2.5

[PATCH 11/11] ARM: integrator: add Integrator/CP sched_clock support

[Russell King - ARM Linux]

Integrator/CP has the 24MHz counter which Versatile and later platforms
also have, which we use for sched_clock support.  Allow this counter to
be used when building a kernel targetting Integrator/CP alone.
Integrator/AP does not have this counter, so we must exclude support
for the Integrator family when this is enabled.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-integrator/integrator_cp.c |    7 +++++++
 arch/arm/plat-versatile/Kconfig          |    2 +-
 2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 05da36f..9e3ce26 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -44,6 +44,7 @@
 
 #include <plat/clcd.h>
 #include <plat/fpga-irq.h>
+#include <plat/sched_clock.h>
 
 #include "common.h"
 
@@ -440,11 +441,17 @@ static struct amba_device *amba_devs[] __initdata = {
 	&clcd_device,
 };
 
+#define REFCOUNTER (__io_address(INTEGRATOR_HDR_BASE) + 0x28)
+
 static void __init intcp_init_early(void)
 {
 	clkdev_add_table(cp_lookups, ARRAY_SIZE(cp_lookups));
 
 	integrator_init_early();
+
+#ifdef CONFIG_PLAT_VERSATILE_SCHED_CLOCK
+	versatile_sched_clock_init(REFCOUNTER, 24000000);
+#endif
 }
 
 static void __init intcp_init(void)
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index 0b27500..52353be 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -11,7 +11,7 @@ config PLAT_VERSATILE_LEDS
 	depends on ARCH_REALVIEW || ARCH_VERSATILE
 
 config PLAT_VERSATILE_SCHED_CLOCK
-	def_bool y if !ARCH_INTEGRATOR
+	def_bool y if !ARCH_INTEGRATOR_AP
 	select HAVE_SCHED_CLOCK
 
 endif
-- 
1.6.2.5

[PATCH 00/11] Rationalize and consolidate ARMs evaluation boards

[Catalin Marinas]

On Thu, 2011-01-27 at 13:45 +0000, Russell King - ARM Linux wrote:
> This series, which applies on top of the CLCD series consolidates some
> of the code used on ARM platforms, in particular the FPGA interrupt,
> local timer, and SMP bring up code.
> 
> We also add sched_clock() support for Integrator/CP, but only when we're
> building only for Integrator/CP as Integrator/AP platforms don't have
> the 24MHz counter.  We also move the sched_clock() initialization to
> the early init callback, along with registering the clock lookups.
> 
> As we know how DMA is to be supported with primecells, we no longer need
> the DMA definitions which aren't used, so these are removed.

The whole series looks fine (acked. if you need one).

-- 
Catalin