---

yaml --- r: 200804 b: refs/heads/master c: 00952d8 h: refs/heads/master v: v3
git-mirror · Jul 1, 2010 · 9a70fb2 · 9a70fb2
1 parent abe2100
commit 9a70fb2
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Showing 17 changed files with 79 additions and 50 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4d5d85906ad109987504033fa04991f1b0a2e552
+refs/heads/master: 00952d8f14447fccfb9560d98999f7489d4fd2df
diff --git a/trunk/arch/arm/Kconfig b/trunk/arch/arm/Kconfig
@@ -955,7 +955,8 @@ config XSCALE_PMU
 	default y
 
 config CPU_HAS_PMU
-	depends on CPU_V6 || CPU_V7 || XSCALE_PMU
+	depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
+		   (!ARCH_OMAP3 || OMAP3_EMU)
 	default y
 	bool
 

diff --git a/trunk/arch/arm/include/asm/mach/udc_pxa2xx.h b/trunk/arch/arm/include/asm/mach/udc_pxa2xx.h
@@ -21,8 +21,8 @@ struct pxa2xx_udc_mach_info {
 	 * here.  Note that sometimes the signals go through inverters...
 	 */
 	bool	gpio_vbus_inverted;
-	u16	gpio_vbus;			/* high == vbus present */
+	int	gpio_vbus;			/* high == vbus present */
 	bool	gpio_pullup_inverted;
-	u16	gpio_pullup;			/* high == pullup activated */
+	int	gpio_pullup;			/* high == pullup activated */
 };
 
diff --git a/trunk/arch/arm/include/asm/processor.h b/trunk/arch/arm/include/asm/processor.h
@@ -91,7 +91,11 @@ extern void release_thread(struct task_struct *);
 
 unsigned long get_wchan(struct task_struct *p);
 
+#if __LINUX_ARM_ARCH__ == 6
+#define cpu_relax()			smp_mb()
+#else
 #define cpu_relax()			barrier()
+#endif
 
 /*
  * Create a new kernel thread

diff --git a/trunk/arch/arm/mach-pxa/mioa701.c b/trunk/arch/arm/mach-pxa/mioa701.c
@@ -697,7 +697,7 @@ static struct i2c_board_info __initdata mioa701_pi2c_devices[] = {
 };
 
 /* Board I2C devices. */
-static struct i2c_board_info __initdata mioa701_i2c_devices[] = {
+static struct i2c_board_info mioa701_i2c_devices[] = {
 	{
 		I2C_BOARD_INFO("mt9m111", 0x5d),
 	},

diff --git a/trunk/arch/arm/mach-pxa/z2.c b/trunk/arch/arm/mach-pxa/z2.c
@@ -3,8 +3,9 @@
  *
  *  Support for the Zipit Z2 Handheld device.
  *
- *  Author: 	Ken McGuire
- *  Created:	Jan 25, 2009
+ *  Copyright (C) 2009-2010 Marek Vasut <marek.vasut@gmail.com>
+ *
+ *  Based on research and code by: Ken McGuire
  *  Based on mainstone.c as modified for the Zipit Z2.
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -157,21 +158,14 @@ static struct mtd_partition z2_flash_parts[] = {
 	{
 		.name	= "U-Boot Bootloader",
 		.offset	= 0x0,
-		.size	= 0x20000,
-	},
-	{
-		.name	= "Linux Kernel",
-		.offset	= 0x20000,
-		.size	= 0x220000,
-	},
-	{
-		.name	= "Filesystem",
-		.offset	= 0x240000,
-		.size	= 0x5b0000,
-	},
-	{
+		.size	= 0x40000,
+	}, {
 		.name	= "U-Boot Environment",
-		.offset	= 0x7f0000,
+		.offset	= 0x40000,
+		.size	= 0x60000,
+	}, {
+		.name	= "Flash",
+		.offset	= 0x60000,
 		.size	= MTDPART_SIZ_FULL,
 	},
 };

diff --git a/trunk/arch/arm/mach-realview/realview_eb.c b/trunk/arch/arm/mach-realview/realview_eb.c
@@ -32,6 +32,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/localtimer.h>
@@ -457,7 +458,7 @@ static void __init realview_eb_init(void)
 
 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-	.phys_io	= REALVIEW_EB_UART0_BASE,
+	.phys_io	= REALVIEW_EB_UART0_BASE & SECTION_MASK,
 	.io_pg_offst	= (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_fixup,

diff --git a/trunk/arch/arm/mach-realview/realview_pb1176.c b/trunk/arch/arm/mach-realview/realview_pb1176.c
@@ -32,6 +32,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 
@@ -351,7 +352,7 @@ static void __init realview_pb1176_init(void)
 
 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-	.phys_io	= REALVIEW_PB1176_UART0_BASE,
+	.phys_io	= REALVIEW_PB1176_UART0_BASE & SECTION_MASK,
 	.io_pg_offst	= (IO_ADDRESS(REALVIEW_PB1176_UART0_BASE) >> 18) & 0xfffc,
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_pb1176_fixup,

diff --git a/trunk/arch/arm/mach-realview/realview_pb11mp.c b/trunk/arch/arm/mach-realview/realview_pb11mp.c
@@ -32,6 +32,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/localtimer.h>
@@ -373,7 +374,7 @@ static void __init realview_pb11mp_init(void)
 
 MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-	.phys_io	= REALVIEW_PB11MP_UART0_BASE,
+	.phys_io	= REALVIEW_PB11MP_UART0_BASE & SECTION_MASK,
 	.io_pg_offst	= (IO_ADDRESS(REALVIEW_PB11MP_UART0_BASE) >> 18) & 0xfffc,
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_fixup,

diff --git a/trunk/arch/arm/mach-realview/realview_pba8.c b/trunk/arch/arm/mach-realview/realview_pba8.c
@@ -31,6 +31,7 @@
 #include <asm/leds.h>
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 
 #include <asm/mach/arch.h>
@@ -323,7 +324,7 @@ static void __init realview_pba8_init(void)
 
 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-	.phys_io	= REALVIEW_PBA8_UART0_BASE,
+	.phys_io	= REALVIEW_PBA8_UART0_BASE & SECTION_MASK,
 	.io_pg_offst	= (IO_ADDRESS(REALVIEW_PBA8_UART0_BASE) >> 18) & 0xfffc,
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_fixup,

diff --git a/trunk/arch/arm/mach-realview/realview_pbx.c b/trunk/arch/arm/mach-realview/realview_pbx.c
@@ -31,6 +31,7 @@
 #include <asm/mach-types.h>
 #include <asm/pmu.h>
 #include <asm/smp_twd.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
 
@@ -409,7 +410,7 @@ static void __init realview_pbx_init(void)
 
 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
 	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-	.phys_io	= REALVIEW_PBX_UART0_BASE,
+	.phys_io	= REALVIEW_PBX_UART0_BASE & SECTION_MASK,
 	.io_pg_offst	= (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.fixup		= realview_pbx_fixup,

diff --git a/trunk/arch/arm/mach-vexpress/ct-ca9x4.c b/trunk/arch/arm/mach-vexpress/ct-ca9x4.c
@@ -10,6 +10,7 @@
 #include <linux/amba/clcd.h>
 
 #include <asm/clkdev.h>
+#include <asm/pgtable.h>
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/hardware/gic.h>
@@ -236,7 +237,7 @@ static void ct_ca9x4_init(void)
 }
 
 MACHINE_START(VEXPRESS, "ARM-Versatile Express CA9x4")
-	.phys_io	= V2M_UART0,
+	.phys_io	= V2M_UART0 & SECTION_MASK,
 	.io_pg_offst	= (__MMIO_P2V(V2M_UART0) >> 18) & 0xfffc,
 	.boot_params	= PHYS_OFFSET + 0x00000100,
 	.map_io		= ct_ca9x4_map_io,

diff --git a/trunk/arch/arm/mm/Kconfig b/trunk/arch/arm/mm/Kconfig
@@ -735,6 +735,25 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
 	  Forget about fast user space cmpxchg support.
 	  It is just not possible.
 
+config DMA_CACHE_RWFO
+	bool "Enable read/write for ownership DMA cache maintenance"
+	depends on CPU_V6 && SMP
+	default y
+	help
+	  The Snoop Control Unit on ARM11MPCore does not detect the
+	  cache maintenance operations and the dma_{map,unmap}_area()
+	  functions may leave stale cache entries on other CPUs. By
+	  enabling this option, Read or Write For Ownership in the ARMv6
+	  DMA cache maintenance functions is performed. These LDR/STR
+	  instructions change the cache line state to shared or modified
+	  so that the cache operation has the desired effect.
+
+	  Note that the workaround is only valid on processors that do
+	  not perform speculative loads into the D-cache. For such
+	  processors, if cache maintenance operations are not broadcast
+	  in hardware, other workarounds are needed (e.g. cache
+	  maintenance broadcasting in software via FIQ).
+
 config OUTER_CACHE
 	bool
 

diff --git a/trunk/arch/arm/mm/cache-v6.S b/trunk/arch/arm/mm/cache-v6.S
@@ -211,8 +211,9 @@ v6_dma_inv_range:
 	mcrne	p15, 0, r1, c7, c15, 1		@ clean & invalidate unified line
 #endif
 1:
-#ifdef CONFIG_SMP
-	str	r0, [r0]			@ write for ownership
+#ifdef CONFIG_DMA_CACHE_RWFO
+	ldr	r2, [r0]			@ read for ownership
+	str	r2, [r0]			@ write for ownership
 #endif
 #ifdef HARVARD_CACHE
 	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D line
@@ -234,7 +235,7 @@ v6_dma_inv_range:
 v6_dma_clean_range:
 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
 1:
-#ifdef CONFIG_SMP
+#ifdef CONFIG_DMA_CACHE_RWFO
 	ldr	r2, [r0]			@ read for ownership
 #endif
 #ifdef HARVARD_CACHE
@@ -257,7 +258,7 @@ v6_dma_clean_range:
 ENTRY(v6_dma_flush_range)
 	bic	r0, r0, #D_CACHE_LINE_SIZE - 1
 1:
-#ifdef CONFIG_SMP
+#ifdef CONFIG_DMA_CACHE_RWFO
 	ldr	r2, [r0]			@ read for ownership
 	str	r2, [r0]			@ write for ownership
 #endif
@@ -283,9 +284,13 @@ ENTRY(v6_dma_map_area)
 	add	r1, r1, r0
 	teq	r2, #DMA_FROM_DEVICE
 	beq	v6_dma_inv_range
+#ifndef CONFIG_DMA_CACHE_RWFO
+	b	v6_dma_clean_range
+#else
 	teq	r2, #DMA_TO_DEVICE
 	beq	v6_dma_clean_range
 	b	v6_dma_flush_range
+#endif
 ENDPROC(v6_dma_map_area)
 
 /*
@@ -295,6 +300,11 @@ ENDPROC(v6_dma_map_area)
  *	- dir	- DMA direction
  */
 ENTRY(v6_dma_unmap_area)
+#ifndef CONFIG_DMA_CACHE_RWFO
+	add	r1, r1, r0
+	teq	r2, #DMA_TO_DEVICE
+	bne	v6_dma_inv_range
+#endif
 	mov	pc, lr
 ENDPROC(v6_dma_unmap_area)
 

diff --git a/trunk/arch/arm/mm/dma-mapping.c b/trunk/arch/arm/mm/dma-mapping.c
@@ -24,15 +24,6 @@
 #include <asm/tlbflush.h>
 #include <asm/sizes.h>
 
-/* Sanity check size */
-#if (CONSISTENT_DMA_SIZE % SZ_2M)
-#error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
-#endif
-
-#define CONSISTENT_OFFSET(x)	(((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
-#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
-#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
-
 static u64 get_coherent_dma_mask(struct device *dev)
 {
 	u64 mask = ISA_DMA_THRESHOLD;
@@ -123,6 +114,15 @@ static void __dma_free_buffer(struct page *page, size_t size)
 }
 
 #ifdef CONFIG_MMU
+/* Sanity check size */
+#if (CONSISTENT_DMA_SIZE % SZ_2M)
+#error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
+#endif
+
+#define CONSISTENT_OFFSET(x)	(((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
+#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
+#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
+
 /*
  * These are the page tables (2MB each) covering uncached, DMA consistent allocations
  */

diff --git a/trunk/arch/arm/plat-pxa/Makefile b/trunk/arch/arm/plat-pxa/Makefile
@@ -2,8 +2,9 @@
 # Makefile for code common across different PXA processor families
 #
 
-obj-y	:= dma.o pmu.o
+obj-y	:= dma.o
 
+obj-$(CONFIG_ARCH_PXA)		+= pmu.o
 obj-$(CONFIG_GENERIC_GPIO)	+= gpio.o
 obj-$(CONFIG_PXA3xx)		+= mfp.o
 obj-$(CONFIG_ARCH_MMP)		+= mfp.o

diff --git a/trunk/drivers/power/z2_battery.c b/trunk/drivers/power/z2_battery.c
@@ -9,19 +9,13 @@
  *
  */
 
-#include <linux/init.h>
-#include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/power_supply.h>
-#include <linux/i2c.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
 #include <linux/gpio.h>
+#include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
-#include <asm/irq.h>
-#include <asm/mach/irq.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
 #include <linux/z2_battery.h>
 
 #define	Z2_DEFAULT_NAME	"Z2"