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Commit 6f3cafce authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 

* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (21 commits)
  [ARM] 3629/1: S3C24XX: fix missing bracket in regs-dsc.h
  [ARM] 3537/1: Rework DMA-bounce locking for finer granularity
  [ARM] 3601/1: i.MX/MX1 DMA error handling for signaled channels only
  [ARM] 3597/1: ixp4xx/nslu2: Board support for new LED subsystem
  [ARM] 3595/1: ixp4xx/nas100d: Board support for new LED subsystem
  [ARM] 3626/1: ARM EABI: fix syscall restarting
  [ARM] 3628/1: S3C24XX: add get_rate call to struct clk
  [ARM] 3627/1: S3C24XX: split s3c2410 clocks from core clocks
  [ARM] 3613/1: S3C2410: Add sysdev and sysclass
  [ARM] 3624/1: Report true modem control line states
  [ARM] 3620/2: ixp23xx: add uengine loader support
  [ARM] 3618/1: add defconfig for logicpd pxa270 card engine
  [ARM] 3617/1: ep93xx: fix slightly incorrect timer tick rate
  [ARM] 3616/1: fix timer handler wrap logic for a number of platforms
  [ARM] 3615/1: ixp23xx: use platform devices for physmap flash
  [ARM] 3614/1: ep93xx: use platform devices for physmap flash
  [ARM] 3621/1: fix compilation breakage for pnx4008
  [ARM] 3623/1: pnx4008: move GPIO-related defines to gpio.h
  [ARM] 3622/1: pnx4008: remove clk_use/clk_unuse
  [ARM] Enable VFP to be built when non-VFP capable CPUs are selected
  ...
parents 0c97f524 02916526

arch/arm/common/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -16,3 +16,4 @@ obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o 
obj-$(CONFIG_SHARPSL_PM)	+= sharpsl_pm.o

obj-$(CONFIG_SHARP_SCOOP)	+= scoop.o

obj-$(CONFIG_ARCH_IXP2000)	+= uengine.o

obj-$(CONFIG_ARCH_IXP23XX)	+= uengine.o

arch/arm/common/dmabounce.c

+21 −46
Original line number Diff line number Diff line
@@ -77,6 +77,8 @@ struct dmabounce_device_info { 
#endif

	struct dmabounce_pool	small;

	struct dmabounce_pool	large;



	rwlock_t lock;

};



static LIST_HEAD(dmabounce_devs);
@@ -116,6 +118,7 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr, 
	struct safe_buffer *buf;

	struct dmabounce_pool *pool;

	struct device *dev = device_info->dev;

	unsigned long flags;



	dev_dbg(dev, "%s(ptr=%p, size=%d, dir=%d)\n",

		__func__, ptr, size, dir);
@@ -163,8 +166,12 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr, 
		print_alloc_stats(device_info);

#endif



	write_lock_irqsave(&device_info->lock, flags);



	list_add(&buf->node, &device_info->safe_buffers);



	write_unlock_irqrestore(&device_info->lock, flags);



	return buf;

}
@@ -172,22 +179,32 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr, 
static inline struct safe_buffer *

find_safe_buffer(struct dmabounce_device_info *device_info, dma_addr_t safe_dma_addr)

{

	struct safe_buffer *b;

	struct safe_buffer *b = NULL;

	unsigned long flags;



	read_lock_irqsave(&device_info->lock, flags);



	list_for_each_entry(b, &device_info->safe_buffers, node)

		if (b->safe_dma_addr == safe_dma_addr)

			return b;

			break;



	return NULL;

	read_unlock_irqrestore(&device_info->lock, flags);

	return b;

}



static inline void

free_safe_buffer(struct dmabounce_device_info *device_info, struct safe_buffer *buf)

{

	unsigned long flags;



	dev_dbg(device_info->dev, "%s(buf=%p)\n", __func__, buf);



	write_lock_irqsave(&device_info->lock, flags);



	list_del(&buf->node);



	write_unlock_irqrestore(&device_info->lock, flags);



	if (buf->pool)

		dma_pool_free(buf->pool->pool, buf->safe, buf->safe_dma_addr);

	else
@@ -396,7 +413,6 @@ dma_addr_t 
dma_map_single(struct device *dev, void *ptr, size_t size,

		enum dma_data_direction dir)

{

	unsigned long flags;

	dma_addr_t dma_addr;



	dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
@@ -404,12 +420,8 @@ dma_map_single(struct device *dev, void *ptr, size_t size, 


	BUG_ON(dir == DMA_NONE);



	local_irq_save(flags);



	dma_addr = map_single(dev, ptr, size, dir);



	local_irq_restore(flags);



	return dma_addr;

}
@@ -424,25 +436,18 @@ void 
dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,

			enum dma_data_direction dir)

{

	unsigned long flags;



	dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",

		__func__, (void *) dma_addr, size, dir);



	BUG_ON(dir == DMA_NONE);



	local_irq_save(flags);



	unmap_single(dev, dma_addr, size, dir);



	local_irq_restore(flags);

}



int

dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,

		enum dma_data_direction dir)

{

	unsigned long flags;

	int i;



	dev_dbg(dev, "%s(sg=%p,nents=%d,dir=%x)\n",
@@ -450,8 +455,6 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, 


	BUG_ON(dir == DMA_NONE);



	local_irq_save(flags);



	for (i = 0; i < nents; i++, sg++) {

		struct page *page = sg->page;

		unsigned int offset = sg->offset;
@@ -462,8 +465,6 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, 
			map_single(dev, ptr, length, dir);

	}



	local_irq_restore(flags);



	return nents;

}
@@ -471,7 +472,6 @@ void 
dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,

		enum dma_data_direction dir)

{

	unsigned long flags;

	int i;



	dev_dbg(dev, "%s(sg=%p,nents=%d,dir=%x)\n",
@@ -479,55 +479,38 @@ dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, 


	BUG_ON(dir == DMA_NONE);



	local_irq_save(flags);



	for (i = 0; i < nents; i++, sg++) {

		dma_addr_t dma_addr = sg->dma_address;

		unsigned int length = sg->length;



		unmap_single(dev, dma_addr, length, dir);

	}



	local_irq_restore(flags);

}



void

dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_addr, size_t size,

				enum dma_data_direction dir)

{

	unsigned long flags;



	dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",

		__func__, (void *) dma_addr, size, dir);



	local_irq_save(flags);



	sync_single(dev, dma_addr, size, dir);



	local_irq_restore(flags);

}



void

dma_sync_single_for_device(struct device *dev, dma_addr_t dma_addr, size_t size,

				enum dma_data_direction dir)

{

	unsigned long flags;



	dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",

		__func__, (void *) dma_addr, size, dir);



	local_irq_save(flags);



	sync_single(dev, dma_addr, size, dir);



	local_irq_restore(flags);

}



void

dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,

			enum dma_data_direction dir)

{

	unsigned long flags;

	int i;



	dev_dbg(dev, "%s(sg=%p,nents=%d,dir=%x)\n",
@@ -535,23 +518,18 @@ dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents, 


	BUG_ON(dir == DMA_NONE);



	local_irq_save(flags);



	for (i = 0; i < nents; i++, sg++) {

		dma_addr_t dma_addr = sg->dma_address;

		unsigned int length = sg->length;



		sync_single(dev, dma_addr, length, dir);

	}



	local_irq_restore(flags);

}



void

dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,

			enum dma_data_direction dir)

{

	unsigned long flags;

	int i;



	dev_dbg(dev, "%s(sg=%p,nents=%d,dir=%x)\n",
@@ -559,16 +537,12 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents, 


	BUG_ON(dir == DMA_NONE);



	local_irq_save(flags);



	for (i = 0; i < nents; i++, sg++) {

		dma_addr_t dma_addr = sg->dma_address;

		unsigned int length = sg->length;



		sync_single(dev, dma_addr, length, dir);

	}



	local_irq_restore(flags);

}



static int
@@ -622,6 +596,7 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size, 


	device_info->dev = dev;

	INIT_LIST_HEAD(&device_info->safe_buffers);

	rwlock_init(&device_info->lock);



#ifdef STATS

	device_info->total_allocs = 0;

arch/arm/common/uengine.c

+48 −10
Original line number Diff line number Diff line
@@ -18,10 +18,26 @@ 
#include <linux/module.h>

#include <linux/string.h>

#include <asm/hardware.h>

#include <asm/arch/ixp2000-regs.h>

#include <asm/arch/hardware.h>

#include <asm/hardware/uengine.h>

#include <asm/io.h>



#if defined(CONFIG_ARCH_IXP2000)

#define IXP_UENGINE_CSR_VIRT_BASE	IXP2000_UENGINE_CSR_VIRT_BASE

#define IXP_PRODUCT_ID			IXP2000_PRODUCT_ID

#define IXP_MISC_CONTROL		IXP2000_MISC_CONTROL

#define IXP_RESET1			IXP2000_RESET1

#else

#if defined(CONFIG_ARCH_IXP23XX)

#define IXP_UENGINE_CSR_VIRT_BASE	IXP23XX_UENGINE_CSR_VIRT_BASE

#define IXP_PRODUCT_ID			IXP23XX_PRODUCT_ID

#define IXP_MISC_CONTROL		IXP23XX_MISC_CONTROL

#define IXP_RESET1			IXP23XX_RESET1

#else

#error unknown platform

#endif

#endif



#define USTORE_ADDRESS			0x000

#define USTORE_DATA_LOWER		0x004

#define USTORE_DATA_UPPER		0x008
@@ -43,7 +59,7 @@ u32 ixp2000_uengine_mask; 


static void *ixp2000_uengine_csr_area(int uengine)

{

	return ((void *)IXP2000_UENGINE_CSR_VIRT_BASE) + (uengine << 10);

	return ((void *)IXP_UENGINE_CSR_VIRT_BASE) + (uengine << 10);

}



/*
@@ -91,8 +107,13 @@ EXPORT_SYMBOL(ixp2000_uengine_csr_write); 


void ixp2000_uengine_reset(u32 uengine_mask)

{

	ixp2000_reg_wrb(IXP2000_RESET1, uengine_mask & ixp2000_uengine_mask);

	ixp2000_reg_wrb(IXP2000_RESET1, 0);

	u32 value;



	value = ixp2000_reg_read(IXP_RESET1) & ~ixp2000_uengine_mask;



	uengine_mask &= ixp2000_uengine_mask;

	ixp2000_reg_wrb(IXP_RESET1, value | uengine_mask);

	ixp2000_reg_wrb(IXP_RESET1, value);

}

EXPORT_SYMBOL(ixp2000_uengine_reset);
@@ -235,11 +256,12 @@ static int check_ixp_type(struct ixp2000_uengine_code *c) 
	u32 product_id;

	u32 rev;



	product_id = ixp2000_reg_read(IXP2000_PRODUCT_ID);

	product_id = ixp2000_reg_read(IXP_PRODUCT_ID);

	if (((product_id >> 16) & 0x1f) != 0)

		return 0;



	switch ((product_id >> 8) & 0xff) {

#ifdef CONFIG_ARCH_IXP2000

	case 0:		/* IXP2800 */

		if (!(c->cpu_model_bitmask & 4))

			return 0;
@@ -254,6 +276,14 @@ static int check_ixp_type(struct ixp2000_uengine_code *c) 
		if (!(c->cpu_model_bitmask & 2))

			return 0;

		break;

#endif



#ifdef CONFIG_ARCH_IXP23XX

	case 4:		/* IXP23xx */

		if (!(c->cpu_model_bitmask & 0x3f0))

			return 0;

		break;

#endif



	default:

		return 0;
@@ -432,7 +462,8 @@ static int __init ixp2000_uengine_init(void) 
	/*

	 * Determine number of microengines present.

	 */

	switch ((ixp2000_reg_read(IXP2000_PRODUCT_ID) >> 8) & 0x1fff) {

	switch ((ixp2000_reg_read(IXP_PRODUCT_ID) >> 8) & 0x1fff) {

#ifdef CONFIG_ARCH_IXP2000

	case 0:		/* IXP2800 */

	case 1:		/* IXP2850 */

		ixp2000_uengine_mask = 0x00ff00ff;
@@ -441,10 +472,17 @@ static int __init ixp2000_uengine_init(void) 
	case 2:		/* IXP2400 */

		ixp2000_uengine_mask = 0x000f000f;

		break;

#endif



#ifdef CONFIG_ARCH_IXP23XX

	case 4:		/* IXP23xx */

		ixp2000_uengine_mask = (*IXP23XX_EXP_CFG_FUSE >> 8) & 0xf;

		break;

#endif



	default:

		printk(KERN_INFO "Detected unknown IXP2000 model (%.8x)\n",

			(unsigned int)ixp2000_reg_read(IXP2000_PRODUCT_ID));

			(unsigned int)ixp2000_reg_read(IXP_PRODUCT_ID));

		ixp2000_uengine_mask = 0x00000000;

		break;

	}
@@ -457,15 +495,15 @@ static int __init ixp2000_uengine_init(void) 
	/*

	 * Synchronise timestamp counters across all microengines.

	 */

	value = ixp2000_reg_read(IXP2000_MISC_CONTROL);

	ixp2000_reg_wrb(IXP2000_MISC_CONTROL, value & ~0x80);

	value = ixp2000_reg_read(IXP_MISC_CONTROL);

	ixp2000_reg_wrb(IXP_MISC_CONTROL, value & ~0x80);

	for (uengine = 0; uengine < 32; uengine++) {

		if (ixp2000_uengine_mask & (1 << uengine)) {

			ixp2000_uengine_csr_write(uengine, TIMESTAMP_LOW, 0);

			ixp2000_uengine_csr_write(uengine, TIMESTAMP_HIGH, 0);

		}

	}

	ixp2000_reg_wrb(IXP2000_MISC_CONTROL, value | 0x80);

	ixp2000_reg_wrb(IXP_MISC_CONTROL, value | 0x80);



	return 0;

}

arch/arm/configs/lpd270_defconfig

0 → 100644
+963 −0

File added.

Preview size limit exceeded, changes collapsed.

arch/arm/kernel/entry-armv.S

+11 −13
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <asm/glue.h>

#include <asm/vfpmacros.h>

#include <asm/arch/entry-macro.S>

#include <asm/thread_notify.h>



#include "entry-header.S"
@@ -560,10 +561,8 @@ ENTRY(__switch_to) 
	add	ip, r1, #TI_CPU_SAVE

	ldr	r3, [r2, #TI_TP_VALUE]

	stmia	ip!, {r4 - sl, fp, sp, lr}	@ Store most regs on stack

#ifndef CONFIG_MMU

	add	r2, r2, #TI_CPU_DOMAIN

#else

	ldr	r6, [r2, #TI_CPU_DOMAIN]!

#ifdef CONFIG_MMU

	ldr	r6, [r2, #TI_CPU_DOMAIN]

#endif

#if __LINUX_ARM_ARCH__ >= 6

#ifdef CONFIG_CPU_32v6K
@@ -585,21 +584,20 @@ ENTRY(__switch_to) 
#ifdef CONFIG_MMU

	mcr	p15, 0, r6, c3, c0, 0		@ Set domain register

#endif

#ifdef CONFIG_VFP

	@ Always disable VFP so we can lazily save/restore the old

	@ state. This occurs in the context of the previous thread.

	VFPFMRX	r4, FPEXC

	bic	r4, r4, #FPEXC_ENABLE

	VFPFMXR	FPEXC, r4

#endif

#if defined(CONFIG_IWMMXT)

	bl	iwmmxt_task_switch

#elif defined(CONFIG_CPU_XSCALE)

	add	r4, r2, #40			@ cpu_context_save->extra

	add	r4, r2, #TI_CPU_DOMAIN + 40	@ cpu_context_save->extra

	ldmib	r4, {r4, r5}

	mar	acc0, r4, r5

#endif

	ldmib	r2, {r4 - sl, fp, sp, pc}	@ Load all regs saved previously

	mov	r5, r0

	add	r4, r2, #TI_CPU_SAVE

	ldr	r0, =thread_notify_head

	mov	r1, #THREAD_NOTIFY_SWITCH

	bl	atomic_notifier_call_chain

	mov	r0, r5

	ldmia	r4, {r4 - sl, fp, sp, pc}	@ Load all regs saved previously



	__INIT