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-rw-r--r--arch/arm/Kconfig3
-rw-r--r--arch/arm/include/asm/mach/udc_pxa2xx.h4
-rw-r--r--arch/arm/include/asm/processor.h4
-rw-r--r--arch/arm/mach-pxa/mioa701.c2
-rw-r--r--arch/arm/mach-pxa/z2.c26
-rw-r--r--arch/arm/mach-realview/realview_eb.c3
-rw-r--r--arch/arm/mach-realview/realview_pb1176.c3
-rw-r--r--arch/arm/mach-realview/realview_pb11mp.c3
-rw-r--r--arch/arm/mach-realview/realview_pba8.c3
-rw-r--r--arch/arm/mach-realview/realview_pbx.c3
-rw-r--r--arch/arm/mach-vexpress/ct-ca9x4.c3
-rw-r--r--arch/arm/mm/Kconfig19
-rw-r--r--arch/arm/mm/cache-v6.S18
-rw-r--r--arch/arm/mm/dma-mapping.c18
-rw-r--r--arch/arm/plat-pxa/Makefile3
15 files changed, 75 insertions, 40 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1f254bd6c937..98922f7d2d12 100644
--- a/arch/arm/Kconfig
+++ b/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/arch/arm/include/asm/mach/udc_pxa2xx.h b/arch/arm/include/asm/mach/udc_pxa2xx.h
index f3eabf1ecec3..833306ee9e7f 100644
--- a/arch/arm/include/asm/mach/udc_pxa2xx.h
+++ b/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/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index 6a89567ffc5b..7bed3daf83b8 100644
--- a/arch/arm/include/asm/processor.h
+++ b/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/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c
index d60db87dde08..fa6a708b4099 100644
--- a/arch/arm/mach-pxa/mioa701.c
+++ b/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/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c
index f5d1ae3db3a4..d303c6929d32 100644
--- a/arch/arm/mach-pxa/z2.c
+++ b/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/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 422ccd70d5f5..4425018fab82 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/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/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index 96568ebfa2bb..099a1f125cf8 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/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/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 7fbefbbebaf0..0e07a5ccb75f 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/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/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index d3c113b3dfce..ac2f06f1ca50 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/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/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index a235ba30996b..08fd683adc4c 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/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/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c
index 9b11eedba65f..6353459bb567 100644
--- a/arch/arm/mach-vexpress/ct-ca9x4.c
+++ b/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/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 346ae14824a5..fc1b2fa59429 100644
--- a/arch/arm/mm/Kconfig
+++ b/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/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S
index e46ecd847138..86aa689ef1aa 100644
--- a/arch/arm/mm/cache-v6.S
+++ b/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/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 13fa536d82e6..9e7742f0a102 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/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/arch/arm/plat-pxa/Makefile b/arch/arm/plat-pxa/Makefile
index 6187edfbcb77..a17cc0c6a6b0 100644
--- a/arch/arm/plat-pxa/Makefile
+++ b/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
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-17 03:36:19 +0100