diff options
| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-22 22:46:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-22 22:46:28 -0700 |
| commit | 6f3cafce0ed24372084b5648c9e8a6aacbaf9900 (patch) | |
| tree | a20de49dbad477a608d1df3ce19f3eeb68417585 /arch | |
| parent | 0c97f524fc16004602f97ba19c36acdcc0fb9688 (diff) | |
| parent | 02916526133aebc0b3b6c486d1b0af95221033bd (diff) | |
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
...
Diffstat (limited to 'arch')
38 files changed, 1771 insertions, 460 deletions
diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile index 847e3e6356c6..e1289a256ce5 100644 --- a/arch/arm/common/Makefile +++ b/arch/arm/common/Makefile @@ -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 diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index 7971d0dc6892..5b7c26395b44 100644 --- a/arch/arm/common/dmabounce.c +++ b/arch/arm/common/dmabounce.c @@ -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; diff --git a/arch/arm/common/uengine.c b/arch/arm/common/uengine.c index a1310b71004e..dfca596a9a27 100644 --- a/arch/arm/common/uengine.c +++ b/arch/arm/common/uengine.c @@ -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; } diff --git a/arch/arm/configs/lpd270_defconfig b/arch/arm/configs/lpd270_defconfig new file mode 100644 index 000000000000..d08bbe59483a --- /dev/null +++ b/arch/arm/configs/lpd270_defconfig @@ -0,0 +1,963 @@ +# +# Automatically generated make config: don't edit +# Linux kernel version: 2.6.17-git2 +# Wed Jun 21 22:20:18 2006 +# +CONFIG_ARM=y +CONFIG_MMU=y +CONFIG_RWSEM_GENERIC_SPINLOCK=y +CONFIG_GENERIC_HWEIGHT=y +CONFIG_GENERIC_CALIBRATE_DELAY=y +CONFIG_ARCH_MTD_XIP=y +CONFIG_VECTORS_BASE=0xffff0000 + +# +# Code maturity level options +# +CONFIG_EXPERIMENTAL=y +CONFIG_BROKEN_ON_SMP=y +CONFIG_INIT_ENV_ARG_LIMIT=32 + +# +# General setup +# +CONFIG_LOCALVERSION="" +CONFIG_LOCALVERSION_AUTO=y +CONFIG_SWAP=y +CONFIG_SYSVIPC=y +# CONFIG_POSIX_MQUEUE is not set +# CONFIG_BSD_PROCESS_ACCT is not set +CONFIG_SYSCTL=y +# CONFIG_AUDIT is not set +# CONFIG_IKCONFIG is not set +# CONFIG_RELAY is not set +CONFIG_INITRAMFS_SOURCE="" +CONFIG_UID16=y +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +# CONFIG_EMBEDDED is not set +CONFIG_KALLSYMS=y +# CONFIG_KALLSYMS_ALL is not set +# CONFIG_KALLSYMS_EXTRA_PASS is not set +CONFIG_HOTPLUG=y +CONFIG_PRINTK=y +CONFIG_BUG=y +CONFIG_ELF_CORE=y +CONFIG_BASE_FULL=y +CONFIG_FUTEX=y +CONFIG_EPOLL=y +CONFIG_SHMEM=y +CONFIG_SLAB=y +# CONFIG_TINY_SHMEM is not set +CONFIG_BASE_SMALL=0 +# CONFIG_SLOB is not set + +# +# Loadable module support +# +CONFIG_MODULES=y +# CONFIG_MODULE_UNLOAD is not set +# CONFIG_MODVERSIONS is not set +# CONFIG_MODULE_SRCVERSION_ALL is not set +# CONFIG_KMOD is not set + +# +# Block layer +# +# CONFIG_BLK_DEV_IO_TRACE is not set + +# +# IO Schedulers +# +CONFIG_IOSCHED_NOOP=y +CONFIG_IOSCHED_AS=y +CONFIG_IOSCHED_DEADLINE=y +CONFIG_IOSCHED_CFQ=y +CONFIG_DEFAULT_AS=y +# CONFIG_DEFAULT_DEADLINE is not set +# CONFIG_DEFAULT_CFQ is not set +# CONFIG_DEFAULT_NOOP is not set +CONFIG_DEFAULT_IOSCHED="anticipatory" + +# +# System Type +# +# CONFIG_ARCH_AAEC2000 is not set +# CONFIG_ARCH_INTEGRATOR is not set +# CONFIG_ARCH_REALVIEW is not set +# CONFIG_ARCH_VERSATILE is not set +# CONFIG_ARCH_AT91RM9200 is not set +# CONFIG_ARCH_CLPS7500 is not set +# CONFIG_ARCH_CLPS711X is not set +# CONFIG_ARCH_CO285 is not set +# CONFIG_ARCH_EBSA110 is not set +# CONFIG_ARCH_EP93XX is not set +# CONFIG_ARCH_FOOTBRIDGE is not set +# CONFIG_ARCH_NETX is not set +# CONFIG_ARCH_H720X is not set +# CONFIG_ARCH_IMX is not set +# CONFIG_ARCH_IOP3XX is not set +# CONFIG_ARCH_IXP4XX is not set +# CONFIG_ARCH_IXP2000 is not set +# CONFIG_ARCH_IXP23XX is not set +# CONFIG_ARCH_L7200 is not set +# CONFIG_ARCH_PNX4008 is not set +CONFIG_ARCH_PXA=y +# CONFIG_ARCH_RPC is not set +# CONFIG_ARCH_SA1100 is not set +# CONFIG_ARCH_S3C2410 is not set +# CONFIG_ARCH_SHARK is not set +# CONFIG_ARCH_LH7A40X is not set +# CONFIG_ARCH_OMAP is not set + +# +# Intel PXA2xx Implementations +# +# CONFIG_ARCH_LUBBOCK is not set +CONFIG_MACH_LOGICPD_PXA270=y +# CONFIG_MACH_MAINSTONE is not set +# CONFIG_ARCH_PXA_IDP is not set +# CONFIG_PXA_SHARPSL is not set +CONFIG_PXA27x=y +CONFIG_IWMMXT=y + +# +# Processor Type +# +CONFIG_CPU_32=y +CONFIG_CPU_XSCALE=y +CONFIG_CPU_32v5=y +CONFIG_CPU_ABRT_EV5T=y +CONFIG_CPU_CACHE_VIVT=y +CONFIG_CPU_TLB_V4WBI=y + +# +# Processor Features +# +# CONFIG_ARM_THUMB is not set +CONFIG_XSCALE_PMU=y + +# +# Bus support +# + +# +# PCCARD (PCMCIA/CardBus) support +# +# CONFIG_PCCARD is not set + +# +# Kernel Features +# +# CONFIG_PREEMPT is not set +# CONFIG_NO_IDLE_HZ is not set +CONFIG_HZ=100 +# CONFIG_AEABI is not set +# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set +CONFIG_SELECT_MEMORY_MODEL=y +CONFIG_FLATMEM_MANUAL=y +# CONFIG_DISCONTIGMEM_MANUAL is not set +# CONFIG_SPARSEMEM_MANUAL is not set +CONFIG_FLATMEM=y +CONFIG_FLAT_NODE_MEM_MAP=y +# CONFIG_SPARSEMEM_STATIC is not set +CONFIG_SPLIT_PTLOCK_CPUS=4096 +CONFIG_ALIGNMENT_TRAP=y + +# +# Boot options +# +CONFIG_ZBOOT_ROM_TEXT=0x0 +CONFIG_ZBOOT_ROM_BSS=0x0 +CONFIG_CMDLINE="root=/dev/nfs ip=bootp console=ttyS0,115200 mem=64M" +# CONFIG_XIP_KERNEL is not set + +# +# Floating point emulation +# + +# +# At least one emulation must be selected +# +CONFIG_FPE_NWFPE=y +# CONFIG_FPE_NWFPE_XP is not set +# CONFIG_FPE_FASTFPE is not set + +# +# Userspace binary formats +# +CONFIG_BINFMT_ELF=y +# CONFIG_BINFMT_AOUT is not set +# CONFIG_BINFMT_MISC is not set +# CONFIG_ARTHUR is not set + +# +# Power management options +# +# CONFIG_PM is not set +# CONFIG_PM_LEGACY is not set +# CONFIG_PM_DEBUG is not set +# CONFIG_APM is not set + +# +# Networking +# +CONFIG_NET=y + +# +# Networking options +# +# CONFIG_NETDEBUG is not set +# CONFIG_PACKET is not set +CONFIG_UNIX=y +CONFIG_XFRM=y +# CONFIG_XFRM_USER is not set +# CONFIG_NET_KEY is not set +CONFIG_INET=y +# CONFIG_IP_MULTICAST is not set +# CONFIG_IP_ADVANCED_ROUTER is not set +CONFIG_IP_FIB_HASH=y +CONFIG_IP_PNP=y +# CONFIG_IP_PNP_DHCP is not set +CONFIG_IP_PNP_BOOTP=y +# CONFIG_IP_PNP_RARP is not set +# CONFIG_NET_IPIP is not set +# CONFIG_NET_IPGRE is not set +# CONFIG_ARPD is not set +# CONFIG_SYN_COOKIES is not set +# CONFIG_INET_AH is not set +# CONFIG_INET_ESP is not set +# CONFIG_INET_IPCOMP is not set +# CONFIG_INET_XFRM_TUNNEL is not set +# CONFIG_INET_TUNNEL is not set +CONFIG_INET_XFRM_MODE_TRANSPORT=y +CONFIG_INET_XFRM_MODE_TUNNEL=y +CONFIG_INET_DIAG=y +CONFIG_INET_TCP_DIAG=y +# CONFIG_TCP_CONG_ADVANCED is not set +CONFIG_TCP_CONG_BIC=y +# CONFIG_IPV6 is not set +# CONFIG_INET6_XFRM_TUNNEL is not set +# CONFIG_INET6_TUNNEL is not set +# CONFIG_NETWORK_SECMARK is not set +# CONFIG_NETFILTER is not set + +# +# DCCP Configuration (EXPERIMENTAL) +# +# CONFIG_IP_DCCP is not set + +# +# SCTP Configuration (EXPERIMENTAL) +# +# CONFIG_IP_SCTP is not set + +# +# TIPC Configuration (EXPERIMENTAL) +# +# CONFIG_TIPC is not set +# CONFIG_ATM is not set +# CONFIG_BRIDGE is not set +# CONFIG_VLAN_8021Q is not set +# CONFIG_DECNET is not set +# CONFIG_LLC2 is not set +# CONFIG_IPX is not set +# CONFIG_ATALK is not set +# CONFIG_X25 is not set +# CONFIG_LAPB is not set +# CONFIG_NET_DIVERT is not set +# CONFIG_ECONET is not set +# CONFIG_WAN_ROUTER is not set + +# +# QoS and/or fair queueing +# +# CONFIG_NET_SCHED is not set + +# +# Network testing +# +# CONFIG_NET_PKTGEN is not set +# CONFIG_HAMRADIO is not set +# CONFIG_IRDA is not set +# CONFIG_BT is not set +# CONFIG_IEEE80211 is not set + +# +# Device Drivers +# + +# +# Generic Driver Options +# +CONFIG_STANDALONE=y +CONFIG_PREVENT_FIRMWARE_BUILD=y +# CONFIG_FW_LOADER is not set +# CONFIG_DEBUG_DRIVER is not set + +# +# Connector - unified userspace <-> kernelspace linker +# +# CONFIG_CONNECTOR is not set + +# +# Memory Technology Devices (MTD) +# +CONFIG_MTD=y +# CONFIG_MTD_DEBUG is not set +# CONFIG_MTD_CONCAT is not set +CONFIG_MTD_PARTITIONS=y +CONFIG_MTD_REDBOOT_PARTS=y +CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-1 +# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set +# CONFIG_MTD_REDBOOT_PARTS_READONLY is not set +# CONFIG_MTD_CMDLINE_PARTS is not set +# CONFIG_MTD_AFS_PARTS is not set + +# +# User Modules And Translation Layers +# +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +# CONFIG_FTL is not set +# CONFIG_NFTL is not set +# CONFIG_INFTL is not set +# CONFIG_RFD_FTL is not set + +# +# RAM/ROM/Flash chip drivers +# +CONFIG_MTD_CFI=y +# CONFIG_MTD_JEDECPROBE is not set +CONFIG_MTD_GEN_PROBE=y +CONFIG_MTD_CFI_ADV_OPTIONS=y +CONFIG_MTD_CFI_NOSWAP=y +# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set +# CONFIG_MTD_CFI_LE_BYTE_SWAP is not set +CONFIG_MTD_CFI_GEOMETRY=y +CONFIG_MTD_MAP_BANK_WIDTH_1=y +CONFIG_MTD_MAP_BANK_WIDTH_2=y +CONFIG_MTD_MAP_BANK_WIDTH_4=y +# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set +# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set +# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set +# CONFIG_MTD_CFI_I1 is not set +CONFIG_MTD_CFI_I2=y +# CONFIG_MTD_CFI_I4 is not set +# CONFIG_MTD_CFI_I8 is not set +# CONFIG_MTD_OTP is not set +CONFIG_MTD_CFI_INTELEXT=y +# CONFIG_MTD_CFI_AMDSTD is not set +# CONFIG_MTD_CFI_STAA is not set +CONFIG_MTD_CFI_UTIL=y +# CONFIG_MTD_RAM is not set +# CONFIG_MTD_ROM is not set +# CONFIG_MTD_ABSENT is not set +# CONFIG_MTD_OBSOLETE_CHIPS is not set +# CONFIG_MTD_XIP is not set + +# +# Mapping drivers for chip access +# +# CONFIG_MTD_COMPLEX_MAPPINGS is not set +# CONFIG_MTD_PHYSMAP is not set +# CONFIG_MTD_ARM_INTEGRATOR is not set +# CONFIG_MTD_SHARP_SL is not set +# CONFIG_MTD_PLATRAM is not set + +# +# Self-contained MTD device drivers +# +# CONFIG_MTD_SLRAM is not set +# CONFIG_MTD_PHRAM is not set +# CONFIG_MTD_MTDRAM is not set +# CONFIG_MTD_BLOCK2MTD is not set + +# +# Disk-On-Chip Device Drivers +# +# CONFIG_MTD_DOC2000 is not set +# CONFIG_MTD_DOC2001 is not set +# CONFIG_MTD_DOC2001PLUS is not set + +# +# NAND Flash Device Drivers +# +# CONFIG_MTD_NAND is not set + +# +# OneNAND Flash Device Drivers +# +# CONFIG_MTD_ONENAND is not set + +# +# Parallel port support +# +# CONFIG_PARPORT is not set + +# +# Plug and Play support +# + +# +# Block devices +# +# CONFIG_BLK_DEV_COW_COMMON is not set +# CONFIG_BLK_DEV_LOOP is not set +# CONFIG_BLK_DEV_NBD is not set +# CONFIG_BLK_DEV_RAM is not set +# CONFIG_BLK_DEV_INITRD is not set +# CONFIG_CDROM_PKTCDVD is not set +# CONFIG_ATA_OVER_ETH is not set + +# +# ATA/ATAPI/MFM/RLL support +# +CONFIG_IDE=y +CONFIG_BLK_DEV_IDE=y + +# +# Please see Documentation/ide.txt for help/info on IDE drives +# +# CONFIG_BLK_DEV_IDE_SATA is not set +CONFIG_BLK_DEV_IDEDISK=y +# CONFIG_IDEDISK_MULTI_MODE is not set +# CONFIG_BLK_DEV_IDECD is not set +# CONFIG_BLK_DEV_IDETAPE is not set +# CONFIG_BLK_DEV_IDEFLOPPY is not set +# CONFIG_IDE_TASK_IOCTL is not set + +# +# IDE chipset support/bugfixes +# +# CONFIG_IDE_GENERIC is not set +# CONFIG_IDE_ARM is not set +# CONFIG_BLK_DEV_IDEDMA is not set +# CONFIG_IDEDMA_AUTO is not set +# CONFIG_BLK_DEV_HD is not set + +# +# SCSI device support +# +# CONFIG_RAID_ATTRS is not set +# CONFIG_SCSI is not set + +# +# Multi-device support (RAID and LVM) +# +# CONFIG_MD is not set + +# +# Fusion MPT device support +# +# CONFIG_FUSION is not set + +# +# IEEE 1394 (FireWire) support +# + +# +# I2O device support +# + +# +# Network device support +# +CONFIG_NETDEVICES=y +# CONFIG_DUMMY is not set +# CONFIG_BONDING is not set +# CONFIG_EQUALIZER is not set +# CONFIG_TUN is not set + +# +# PHY device support +# +# CONFIG_PHYLIB is not set + +# +# Ethernet (10 or 100Mbit) +# +CONFIG_NET_ETHERNET=y +CONFIG_MII=y +CONFIG_SMC91X=y +# CONFIG_DM9000 is not set +# CONFIG_SMC911X is not set + +# +# Ethernet (1000 Mbit) +# + +# +# Ethernet (10000 Mbit) +# + +# +# Token Ring devices +# + +# +# Wireless LAN (non-hamradio) +# +# CONFIG_NET_RADIO is not set + +# +# Wan interfaces +# +# CONFIG_WAN is not set +# CONFIG_PPP is not set +# CONFIG_SLIP is not set +# CONFIG_SHAPER is not set +# CONFIG_NETCONSOLE is not set +# CONFIG_NETPOLL is not set +# CONFIG_NET_POLL_CONTROLLER is not set + +# +# ISDN subsystem +# +# CONFIG_ISDN is not set + +# +# Input device support +# +CONFIG_INPUT=y + +# +# Userland interfaces +# +CONFIG_INPUT_MOUSEDEV=y +CONFIG_INPUT_MOUSEDEV_PSAUX=y +CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024 +CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768 +# CONFIG_INPUT_JOYDEV is not set +# CONFIG_INPUT_TSDEV is not set +CONFIG_INPUT_EVDEV=y +# CONFIG_INPUT_EVBUG is not set + +# +# Input Device Drivers +# +CONFIG_INPUT_KEYBOARD=y +CONFIG_KEYBOARD_ATKBD=y +# CONFIG_KEYBOARD_SUNKBD is not set +# CONFIG_KEYBOARD_LKKBD is not set +# CONFIG_KEYBOARD_XTKBD is not set +# CONFIG_KEYBOARD_NEWTON is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_INPUT_JOYSTICK is not set +# CONFIG_INPUT_TOUCHSCREEN is not set +# CONFIG_INPUT_MISC is not set + +# +# Hardware I/O ports +# +CONFIG_SERIO=y +# CONFIG_SERIO_SERPORT is not set +CONFIG_SERIO_LIBPS2=y +# CONFIG_SERIO_RAW is not set +# CONFIG_GAMEPORT is not set + +# +# Character devices +# +CONFIG_VT=y +CONFIG_VT_CONSOLE=y +CONFIG_HW_CONSOLE=y +# CONFIG_SERIAL_NONSTANDARD is not set + +# +# Serial drivers +# +# CONFIG_SERIAL_8250 is not set + +# +# Non-8250 serial port support +# +CONFIG_SERIAL_PXA=y +CONFIG_SERIAL_PXA_CONSOLE=y +CONFIG_SERIAL_CORE=y +CONFIG_SERIAL_CORE_CONSOLE=y +CONFIG_UNIX98_PTYS=y +CONFIG_LEGACY_PTYS=y +CONFIG_LEGACY_PTY_COUNT=256 + +# +# IPMI +# +# CONFIG_IPMI_HANDLER is not set + +# +# Watchdog Cards +# +# CONFIG_WATCHDOG is not set +# CONFIG_NVRAM is not set +# CONFIG_DTLK is not set +# CONFIG_R3964 is not set + +# +# Ftape, the floppy tape device driver +# +# CONFIG_RAW_DRIVER is not set + +# +# TPM devices +# +# CONFIG_TCG_TPM is not set +# CONFIG_TELCLOCK is not set + +# +# I2C support +# +# CONFIG_I2C is not set + +# +# SPI support +# +# CONFIG_SPI is not set +# CONFIG_SPI_MASTER is not set + +# +# Dallas's 1-wire bus +# +# CONFIG_W1 is not set + +# +# Hardware Monitoring support +# +CONFIG_HWMON=y +# CONFIG_HWMON_VID is not set +# CONFIG_SENSORS_F71805F is not set +# CONFIG_HWMON_DEBUG_CHIP is not set + +# +# Misc devices +# + +# +# LED devices +# +# CONFIG_NEW_LEDS is not set + +# +# LED drivers +# + +# +# LED Triggers +# + +# +# Multimedia devices +# +# CONFIG_VIDEO_DEV is not set +CONFIG_VIDEO_V4L2=y + +# +# Digital Video Broadcasting Devices +# +# CONFIG_DVB is not set + +# +# Graphics support +# +CONFIG_FB=y +CONFIG_FB_CFB_FILLRECT=y +CONFIG_FB_CFB_COPYAREA=y +CONFIG_FB_CFB_IMAGEBLIT=y +# CONFIG_FB_MACMODES is not set +CONFIG_FB_FIRMWARE_EDID=y +# CONFIG_FB_MODE_HELPERS is not set +# CONFIG_FB_TILEBLITTING is not set +# CONFIG_FB_S1D13XXX is not set +CONFIG_FB_PXA=y +# CONFIG_FB_PXA_PARAMETERS is not set +# CONFIG_FB_VIRTUAL is not set + +# +# Console display driver support +# +# CONFIG_VGA_CONSOLE is not set +CONFIG_DUMMY_CONSOLE=y +CONFIG_FRAMEBUFFER_CONSOLE=y +# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set +# CONFIG_FONTS is not set +CONFIG_FONT_8x8=y +CONFIG_FONT_8x16=y + +# +# Logo configuration +# +CONFIG_LOGO=y +CONFIG_LOGO_LINUX_MONO=y +CONFIG_LOGO_LINUX_VGA16=y +CONFIG_LOGO_LINUX_CLUT224=y +# CONFIG_BACKLIGHT_LCD_SUPPORT is not set + +# +# Sound +# +CONFIG_SOUND=y + +# +# Advanced Linux Sound Architecture +# +CONFIG_SND=y +CONFIG_SND_TIMER=y +CONFIG_SND_PCM=y +# CONFIG_SND_SEQUENCER is not set +# CONFIG_SND_MIXER_OSS is not set +# CONFIG_SND_PCM_OSS is not set +# CONFIG_SND_DYNAMIC_MINORS is not set +# CONFIG_SND_SUPPORT_OLD_API is not set +CONFIG_SND_VERBOSE_PROCFS=y +# CONFIG_SND_VERBOSE_PRINTK is not set +# CONFIG_SND_DEBUG is not set + +# +# Generic devices +# +CONFIG_SND_AC97_CODEC=y +CONFIG_SND_AC97_BUS=y +# CONFIG_SND_DUMMY is not set +# CONFIG_SND_MTPAV is not set +# CONFIG_SND_SERIAL_U16550 is not set +# CONFIG_SND_MPU401 is not set + +# +# ALSA ARM devices +# +CONFIG_SND_PXA2XX_PCM=y +CONFIG_SND_PXA2XX_AC97=y + +# +# Open Sound System +# +# CONFIG_SOUND_PRIME is not set + +# +# USB support +# +CONFIG_USB_ARCH_HAS_HCD=y +CONFIG_USB_ARCH_HAS_OHCI=y +# CONFIG_USB_ARCH_HAS_EHCI is not set +# CONFIG_USB is not set + +# +# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' +# + +# +# USB Gadget Support +# +# CONFIG_USB_GADGET is not set + +# +# MMC/SD Card support +# +# CONFIG_MMC is not set + +# +# Real Time Clock +# +CONFIG_RTC_LIB=y +# CONFIG_RTC_CLASS is not set + +# +# File systems +# +CONFIG_EXT2_FS=y +# CONFIG_EXT2_FS_XATTR is not set +# CONFIG_EXT2_FS_XIP is not set +# CONFIG_EXT3_FS is not set +# CONFIG_REISERFS_FS is not set +# CONFIG_JFS_FS is not set +# CONFIG_FS_POSIX_ACL is not set +# CONFIG_XFS_FS is not set +# CONFIG_OCFS2_FS is not set +# CONFIG_MINIX_FS is not set +# CONFIG_ROMFS_FS is not set +CONFIG_INOTIFY=y +CONFIG_INOTIFY_USER=y +# CONFIG_QUOTA is not set +CONFIG_DNOTIFY=y +# CONFIG_AUTOFS_FS is not set +# CONFIG_AUTOFS4_FS is not set +# CONFIG_FUSE_FS is not set + +# +# CD-ROM/DVD Filesystems +# +# CONFIG_ISO9660_FS is not set +# CONFIG_UDF_FS is not set + +# +# DOS/FAT/NT Filesystems +# +CONFIG_FAT_FS=y +CONFIG_MSDOS_FS=y +# CONFIG_VFAT_FS is not set +CONFIG_FAT_DEFAULT_CODEPAGE=437 +# CONFIG_NTFS_FS is not set + +# +# Pseudo filesystems +# +CONFIG_PROC_FS=y +CONFIG_SYSFS=y +# CONFIG_TMPFS is not set +# CONFIG_HUGETLB_PAGE is not set +CONFIG_RAMFS=y +# CONFIG_CONFIGFS_FS is not set + +# +# Miscellaneous filesystems +# +# CONFIG_ADFS_FS is not set +# CONFIG_AFFS_FS is not set +# CONFIG_HFS_FS is not set +# CONFIG_HFSPLUS_FS is not set +# CONFIG_BEFS_FS is not set +# CONFIG_BFS_FS is not set +# CONFIG_EFS_FS is not set +# CONFIG_JFFS_FS is not set +CONFIG_JFFS2_FS=y +CONFIG_JFFS2_FS_DEBUG=0 +CONFIG_JFFS2_FS_WRITEBUFFER=y +# CONFIG_JFFS2_SUMMARY is not set +# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set +CONFIG_JFFS2_ZLIB=y +CONFIG_JFFS2_RTIME=y +# CONFIG_JFFS2_RUBIN is not set +# CONFIG_CRAMFS is not set +# CONFIG_VXFS_FS is not set +# CONFIG_HPFS_FS is not set +# CONFIG_QNX4FS_FS is not set +# CONFIG_SYSV_FS is not set +# CONFIG_UFS_FS is not set + +# +# Network File Systems +# +CONFIG_NFS_FS=y +# CONFIG_NFS_V3 is not set +# CONFIG_NFS_V4 is not set +# CONFIG_NFS_DIRECTIO is not set +# CONFIG_NFSD is not set +CONFIG_ROOT_NFS=y +CONFIG_LOCKD=y +CONFIG_NFS_COMMON=y +CONFIG_SUNRPC=y +# CONFIG_RPCSEC_GSS_KRB5 is not set +# CONFIG_RPCSEC_GSS_SPKM3 is not set +# CONFIG_SMB_FS is not set +# CONFIG_CIFS is not set +# CONFIG_NCP_FS is not set +# CONFIG_CODA_FS is not set +# CONFIG_AFS_FS is not set +# CONFIG_9P_FS is not set + +# +# Partition Types +# +# CONFIG_PARTITION_ADVANCED is not set +CONFIG_MSDOS_PARTITION=y + +# +# Native Language Support +# +CONFIG_NLS=y +CONFIG_NLS_DEFAULT="iso8859-1" +# CONFIG_NLS_CODEPAGE_437 is not set +# CONFIG_NLS_CODEPAGE_737 is not set +# CONFIG_NLS_CODEPAGE_775 is not set +# CONFIG_NLS_CODEPAGE_850 is not set +# CONFIG_NLS_CODEPAGE_852 is not set +# CONFIG_NLS_CODEPAGE_855 is not set +# CONFIG_NLS_CODEPAGE_857 is not set +# CONFIG_NLS_CODEPAGE_860 is not set +# CONFIG_NLS_CODEPAGE_861 is not set +# CONFIG_NLS_CODEPAGE_862 is not set +# CONFIG_NLS_CODEPAGE_863 is not set +# CONFIG_NLS_CODEPAGE_864 is not set +# CONFIG_NLS_CODEPAGE_865 is not set +# CONFIG_NLS_CODEPAGE_866 is not set +# CONFIG_NLS_CODEPAGE_869 is not set +# CONFIG_NLS_CODEPAGE_936 is not set +# CONFIG_NLS_CODEPAGE_950 is not set +# CONFIG_NLS_CODEPAGE_932 is not set +# CONFIG_NLS_CODEPAGE_949 is not set +# CONFIG_NLS_CODEPAGE_874 is not set +# CONFIG_NLS_ISO8859_8 is not set +# CONFIG_NLS_CODEPAGE_1250 is not set +# CONFIG_NLS_CODEPAGE_1251 is not set +# CONFIG_NLS_ASCII is not set +CONFIG_NLS_ISO8859_1=y +# CONFIG_NLS_ISO8859_2 is not set +# CONFIG_NLS_ISO8859_3 is not set +# CONFIG_NLS_ISO8859_4 is not set +# CONFIG_NLS_ISO8859_5 is not set +# CONFIG_NLS_ISO8859_6 is not set +# CONFIG_NLS_ISO8859_7 is not set +# CONFIG_NLS_ISO8859_9 is not set +# CONFIG_NLS_ISO8859_13 is not set +# CONFIG_NLS_ISO8859_14 is not set +# CONFIG_NLS_ISO8859_15 is not set +# CONFIG_NLS_KOI8_R is not set +# CONFIG_NLS_KOI8_U is not set +# CONFIG_NLS_UTF8 is not set + +# +# Profiling support +# +# CONFIG_PROFILING is not set + +# +# Kernel hacking +# +# CONFIG_PRINTK_TIME is not set +CONFIG_MAGIC_SYSRQ=y +CONFIG_DEBUG_KERNEL=y +CONFIG_LOG_BUF_SHIFT=14 +CONFIG_DETECT_SOFTLOCKUP=y +# CONFIG_SCHEDSTATS is not set +# CONFIG_DEBUG_SLAB is not set +# CONFIG_DEBUG_MUTEXES is not set +# CONFIG_DEBUG_SPINLOCK is not set +# CONFIG_DEBUG_SPINLOCK_SLEEP is not set +# CONFIG_DEBUG_KOBJECT is not set +CONFIG_DEBUG_BUGVERBOSE=y +CONFIG_DEBUG_INFO=y +# CONFIG_DEBUG_FS is not set +# CONFIG_DEBUG_VM is not set +CONFIG_FRAME_POINTER=y +# CONFIG_UNWIND_INFO is not set +CONFIG_FORCED_INLINING=y +# CONFIG_RCU_TORTURE_TEST is not set +CONFIG_DEBUG_USER=y +# CONFIG_DEBUG_WAITQ is not set +CONFIG_DEBUG_ERRORS=y +CONFIG_DEBUG_LL=y +# CONFIG_DEBUG_ICEDCC is not set + +# +# Security options +# +# CONFIG_KEYS is not set +# CONFIG_SECURITY is not set + +# +# Cryptographic options +# +# CONFIG_CRYPTO is not set + +# +# Hardware crypto devices +# + +# +# Library routines +# +# CONFIG_CRC_CCITT is not set +# CONFIG_CRC16 is not set +CONFIG_CRC32=y +# CONFIG_LIBCRC32C is not set +CONFIG_ZLIB_INFLATE=y +CONFIG_ZLIB_DEFLATE=y diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index ab8e600c18c8..86c92523a346 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -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 diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S index 24c7b0477a09..af9e0ae952d5 100644 --- a/arch/arm/kernel/iwmmxt.S +++ b/arch/arm/kernel/iwmmxt.S @@ -285,7 +285,7 @@ ENTRY(iwmmxt_task_switch) bne 1f @ yes: block them for next task ldr r5, =concan_owner - add r6, r2, #(TI_IWMMXT_STATE - TI_CPU_DOMAIN) @ get next task Concan save area + add r6, r2, #TI_IWMMXT_STATE @ get next task Concan save area ldr r5, [r5] @ get current Concan owner teq r5, r6 @ next task owns it? movne pc, lr @ no: leave Concan disabled diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 17c38dbf2f3c..e1c77ee885a7 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -33,6 +33,7 @@ #include <asm/leds.h> #include <asm/processor.h> #include <asm/system.h> +#include <asm/thread_notify.h> #include <asm/uaccess.h> #include <asm/mach/time.h> @@ -338,13 +339,9 @@ void exit_thread(void) { } -static void default_fp_init(union fp_state *fp) -{ - memset(fp, 0, sizeof(union fp_state)); -} +ATOMIC_NOTIFIER_HEAD(thread_notify_head); -void (*fp_init)(union fp_state *) = default_fp_init; -EXPORT_SYMBOL(fp_init); +EXPORT_SYMBOL_GPL(thread_notify_head); void flush_thread(void) { @@ -353,22 +350,21 @@ void flush_thread(void) memset(thread->used_cp, 0, sizeof(thread->used_cp)); memset(&tsk->thread.debug, 0, sizeof(struct debug_info)); + memset(&thread->fpstate, 0, sizeof(union fp_state)); + + thread_notify(THREAD_NOTIFY_FLUSH, thread); #if defined(CONFIG_IWMMXT) iwmmxt_task_release(thread); #endif - fp_init(&thread->fpstate); -#if defined(CONFIG_VFP) - vfp_flush_thread(&thread->vfpstate); -#endif } void release_thread(struct task_struct *dead_task) { -#if defined(CONFIG_VFP) - vfp_release_thread(&task_thread_info(dead_task)->vfpstate); -#endif + struct thread_info *thread = task_thread_info(dead_task); + + thread_notify(THREAD_NOTIFY_RELEASE, thread); #if defined(CONFIG_IWMMXT) - iwmmxt_task_release(task_thread_info(dead_task)); + iwmmxt_task_release(thread); #endif } diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index a0cd0a90a10d..e9fe78033361 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -665,17 +665,33 @@ static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall) if (syscall) { if (regs->ARM_r0 == -ERESTART_RESTARTBLOCK) { if (thumb_mode(regs)) { - regs->ARM_r7 = __NR_restart_syscall; + regs->ARM_r7 = __NR_restart_syscall - __NR_SYSCALL_BASE; regs->ARM_pc -= 2; } else { +#if defined(CONFIG_AEABI) && !defined(CONFIG_OABI_COMPAT) + regs->ARM_r7 = __NR_restart_syscall; + regs->ARM_pc -= 4; +#else u32 __user *usp; + u32 swival = __NR_restart_syscall; regs->ARM_sp -= 12; usp = (u32 __user *)regs->ARM_sp; + /* + * Either we supports OABI only, or we have + * EABI with the OABI compat layer enabled. + * In the later case we don't know if user + * space is EABI or not, and if not we must + * not clobber r7. Always using the OABI + * syscall solves that issue and works for + * all those cases. + */ + swival = swival - __NR_SYSCAll_BASE + __NR_OABI_SYSCALL_BASE; + put_user(regs->ARM_pc, &usp[0]); /* swi __NR_restart_syscall */ - put_user(0xef000000 | __NR_restart_syscall, &usp[1]); + put_user(0xef000000 | swival, &usp[1]); /* ldr pc, [sp], #12 */ put_user(0xe49df00c, &usp[2]); @@ -683,6 +699,7 @@ static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall) (unsigned long)(usp + 3)); regs->ARM_pc = regs->ARM_sp + 4; +#endif } } if (regs->ARM_r0 == -ERESTARTNOHAND || diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index dcd417625389..bf6bd71bdd08 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -103,7 +103,8 @@ static int ep93xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) write_seqlock(&xtime_lock); __raw_writel(1, EP93XX_TIMER1_CLEAR); - while (__raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time + while ((signed long) + (__raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time) >= TIMER4_TICKS_PER_JIFFY) { last_jiffy_time += TIMER4_TICKS_PER_JIFFY; timer_tick(regs); @@ -124,7 +125,7 @@ static void __init ep93xx_timer_init(void) { /* Enable periodic HZ timer. */ __raw_writel(0x48, EP93XX_TIMER1_CONTROL); - __raw_writel((508000 / HZ) - 1, EP93XX_TIMER1_LOAD); + __raw_writel((508469 / HZ) - 1, EP93XX_TIMER1_LOAD); __raw_writel(0xc8, EP93XX_TIMER1_CONTROL); /* Enable lost jiffy timer. */ diff --git a/arch/arm/mach-ep93xx/gesbc9312.c b/arch/arm/mach-ep93xx/gesbc9312.c index d18fcb1a2f1b..47cc6c8b7c79 100644 --- a/arch/arm/mach-ep93xx/gesbc9312.c +++ b/arch/arm/mach-ep93xx/gesbc9312.c @@ -16,16 +16,38 @@ #include <linux/mm.h> #include <linux/sched.h> #include <linux/interrupt.h> +#include <linux/ioport.h> #include <linux/mtd/physmap.h> +#include <linux/platform_device.h> #include <asm/io.h> #include <asm/hardware.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> +static struct physmap_flash_data gesbc9312_flash_data = { + .width = 4, +}; + +static struct resource gesbc9312_flash_resource = { + .start = 0x60000000, + .end = 0x60800000, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device gesbc9312_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &gesbc9312_flash_data, + }, + .num_resources = 1, + .resource = &gesbc9312_flash_resource, +}; + static void __init gesbc9312_init_machine(void) { ep93xx_init_devices(); - physmap_configure(0x60000000, 0x00800000, 4, NULL); + platform_device_register(&gesbc9312_flash); } MACHINE_START(GESBC9312, "Glomation GESBC-9312-sx") diff --git a/arch/arm/mach-ep93xx/ts72xx.c b/arch/arm/mach-ep93xx/ts72xx.c index e24566b88a78..6e5a56cd5ae8 100644 --- a/arch/arm/mach-ep93xx/ts72xx.c +++ b/arch/arm/mach-ep93xx/ts72xx.c @@ -16,6 +16,7 @@ #include <linux/mm.h> #include <linux/sched.h> #include <linux/interrupt.h> +#include <linux/ioport.h> #include <linux/mtd/physmap.h> #include <linux/platform_device.h> #include <linux/m48t86.h> @@ -111,6 +112,26 @@ static void __init ts72xx_map_io(void) } } +static struct physmap_flash_data ts72xx_flash_data = { + .width = 1, +}; + +static struct resource ts72xx_flash_resource = { + .start = TS72XX_NOR_PHYS_BASE, + .end = TS72XX_NOR_PHYS_BASE + 0x01000000, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device ts72xx_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &ts72xx_flash_data, + }, + .num_resources = 1, + .resource = &ts72xx_flash_resource, +}; + static unsigned char ts72xx_rtc_readbyte(unsigned long addr) { __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); @@ -141,7 +162,7 @@ static void __init ts72xx_init_machine(void) { ep93xx_init_devices(); if (board_is_ts7200()) - physmap_configure(TS72XX_NOR_PHYS_BASE, 0x01000000, 1, NULL); + platform_device_register(&ts72xx_flash); platform_device_register(&ts72xx_rtc_device); } diff --git a/arch/arm/mach-imx/dma.c b/arch/arm/mach-imx/dma.c index 4ca51dcf13ac..36578871ecc8 100644 --- a/arch/arm/mach-imx/dma.c +++ b/arch/arm/mach-imx/dma.c @@ -15,6 +15,9 @@ * Changed to support scatter gather DMA * by taking Russell's code from RiscPC * + * 2006-05-31 Pavel Pisa <pisa@cmp.felk.cvut.cz> + * Corrected error handling code. + * */ #undef DEBUG @@ -277,7 +280,7 @@ imx_dma_setup_sg(imx_dmach_t dma_ch, int imx_dma_setup_handlers(imx_dmach_t dma_ch, void (*irq_handler) (int, void *, struct pt_regs *), - void (*err_handler) (int, void *, struct pt_regs *), + void (*err_handler) (int, void *, struct pt_regs *, int), void *data) { struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch]; @@ -463,43 +466,53 @@ static irqreturn_t dma_err_handler(int irq, void *dev_id, struct pt_regs *regs) int i, disr = DISR; struct imx_dma_channel *channel; unsigned int err_mask = DBTOSR | DRTOSR | DSESR | DBOSR; + int errcode; - DISR = disr; + DISR = disr & err_mask; for (i = 0; i < IMX_DMA_CHANNELS; i++) { - channel = &imx_dma_channels[i]; - - if ((err_mask & 1 << i) && channel->name - && channel->err_handler) { - channel->err_handler(i, channel->data, regs); + if(!(err_mask & (1 << i))) continue; - } - - imx_dma_channels[i].sg = NULL; + channel = &imx_dma_channels[i]; + errcode = 0; if (DBTOSR & (1 << i)) { - printk(KERN_WARNING - "Burst timeout on channel %d (%s)\n", - i, channel->name); - DBTOSR |= (1 << i); + DBTOSR = (1 << i); + errcode |= IMX_DMA_ERR_BURST; } if (DRTOSR & (1 << i)) { - printk(KERN_WARNING - "Request timeout on channel %d (%s)\n", - i, channel->name); - DRTOSR |= (1 << i); + DRTOSR = (1 << i); + errcode |= IMX_DMA_ERR_REQUEST; } if (DSESR & (1 << i)) { - printk(KERN_WARNING - "Transfer timeout on channel %d (%s)\n", - i, channel->name); - DSESR |= (1 << i); + DSESR = (1 << i); + errcode |= IMX_DMA_ERR_TRANSFER; } if (DBOSR & (1 << i)) { - printk(KERN_WARNING - "Buffer overflow timeout on channel %d (%s)\n", - i, channel->name); - DBOSR |= (1 << i); + DBOSR = (1 << i); + errcode |= IMX_DMA_ERR_BUFFER; } + + /* + * The cleaning of @sg field would be questionable + * there, because its value can help to compute + * remaining/transfered bytes count in the handler + */ + /*imx_dma_channels[i].sg = NULL;*/ + + if (channel->name && channel->err_handler) { + channel->err_handler(i, channel->data, regs, errcode); + continue; + } + + imx_dma_channels[i].sg = NULL; + + printk(KERN_WARNING + "DMA timeout on channel %d (%s) -%s%s%s%s\n", + i, channel->name, + errcode&IMX_DMA_ERR_BURST? " burst":"", + errcode&IMX_DMA_ERR_REQUEST? " request":"", + errcode&IMX_DMA_ERR_TRANSFER? " transfer":"", + errcode&IMX_DMA_ERR_BUFFER? " buffer":""); } return IRQ_HANDLED; } diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c index 6e8d504aca55..186f632035b8 100644 --- a/arch/arm/mach-ixp2000/core.c +++ b/arch/arm/mach-ixp2000/core.c @@ -211,7 +211,8 @@ static int ixp2000_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) /* clear timer 1 */ ixp2000_reg_wrb(IXP2000_T1_CLR, 1); - while ((next_jiffy_time - *missing_jiffy_timer_csr) > ticks_per_jiffy) { + while ((signed long)(next_jiffy_time - *missing_jiffy_timer_csr) + >= ticks_per_jiffy) { timer_tick(regs); next_jiffy_time -= ticks_per_jiffy; } diff --git a/arch/arm/mach-ixp23xx/core.c b/arch/arm/mach-ixp23xx/core.c index affd1d5d7440..051e3d70026e 100644 --- a/arch/arm/mach-ixp23xx/core.c +++ b/arch/arm/mach-ixp23xx/core.c @@ -334,7 +334,7 @@ void __init ixp23xx_init_irq(void) /************************************************************************* * Timer-tick functions for IXP23xx *************************************************************************/ -#define CLOCK_TICKS_PER_USEC CLOCK_TICK_RATE / (USEC_PER_SEC) +#define CLOCK_TICKS_PER_USEC (CLOCK_TICK_RATE / USEC_PER_SEC) static unsigned long next_jiffy_time; @@ -353,7 +353,7 @@ ixp23xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) { /* Clear Pending Interrupt by writing '1' to it */ *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND; - while ((*IXP23XX_TIMER_CONT - next_jiffy_time) > LATCH) { + while ((signed long)(*IXP23XX_TIMER_CONT - next_jiffy_time) >= LATCH) { timer_tick(regs); next_jiffy_time += LATCH; } @@ -439,5 +439,6 @@ static struct platform_device *ixp23xx_devices[] __initdata = { void __init ixp23xx_sys_init(void) { + *IXP23XX_EXP_UNIT_FUSE |= 0xf; platform_add_devices(ixp23xx_devices, ARRAY_SIZE(ixp23xx_devices)); } diff --git a/arch/arm/mach-ixp23xx/espresso.c b/arch/arm/mach-ixp23xx/espresso.c index bf688c128630..dc5e489c70bc 100644 --- a/arch/arm/mach-ixp23xx/espresso.c +++ b/arch/arm/mach-ixp23xx/espresso.c @@ -53,9 +53,29 @@ static int __init espresso_pci_init(void) }; subsys_initcall(espresso_pci_init); +static struct physmap_flash_data espresso_flash_data = { + .width = 2, +}; + +static struct resource espresso_flash_resource = { + .start = 0x90000000, + .end = 0x92000000, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device espresso_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &espresso_flash_data, + }, + .num_resources = 1, + .resource = &espresso_flash_resource, +}; + static void __init espresso_init(void) { - physmap_configure(0x90000000, 0x02000000, 2, NULL); + platform_device_register(&espresso_flash); /* * Mark flash as writeable. diff --git a/arch/arm/mach-ixp23xx/ixdp2351.c b/arch/arm/mach-ixp23xx/ixdp2351.c index 00146c35daac..535b334ee045 100644 --- a/arch/arm/mach-ixp23xx/ixdp2351.c +++ b/arch/arm/mach-ixp23xx/ixdp2351.c @@ -298,9 +298,29 @@ static void __init ixdp2351_map_io(void) iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc)); } +static struct physmap_flash_data ixdp2351_flash_data = { + .width = 1, +}; + +static struct resource ixdp2351_flash_resource = { + .start = 0x90000000, + .end = 0x94000000, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device ixdp2351_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &ixdp2351_flash_data, + }, + .num_resources = 1, + .resource = &ixdp2351_flash_resource, +}; + static void __init ixdp2351_init(void) { - physmap_configure(0x90000000, 0x04000000, 1, NULL); + platform_device_register(&ixdp2351_flash); /* * Mark flash as writeable diff --git a/arch/arm/mach-ixp23xx/roadrunner.c b/arch/arm/mach-ixp23xx/roadrunner.c index 43c14e740794..b9f5d13fcfe1 100644 --- a/arch/arm/mach-ixp23xx/roadrunner.c +++ b/arch/arm/mach-ixp23xx/roadrunner.c @@ -137,9 +137,29 @@ static int __init roadrunner_pci_init(void) subsys_initcall(roadrunner_pci_init); +static struct physmap_flash_data roadrunner_flash_data = { + .width = 2, +}; + +static struct resource roadrunner_flash_resource = { + .start = 0x90000000, + .end = 0x94000000, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device roadrunner_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &roadrunner_flash_data, + }, + .num_resources = 1, + .resource = &roadrunner_flash_resource, +}; + static void __init roadrunner_init(void) { - physmap_configure(0x90000000, 0x04000000, 2, NULL); + platform_device_register(&roadrunner_flash); /* * Mark flash as writeable diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index 00b761ff0f9c..bf25a76e9bdf 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -276,7 +276,7 @@ static irqreturn_t ixp4xx_timer_interrupt(int irq, void *dev_id, struct pt_regs /* * Catch up with the real idea of time */ - while ((*IXP4XX_OSTS - last_jiffy_time) > LATCH) { + while ((signed long)(*IXP4XX_OSTS - last_jiffy_time) >= LATCH) { timer_tick(regs); last_jiffy_time += LATCH; } diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c index a3b4c6ac5708..9a31444d9214 100644 --- a/arch/arm/mach-ixp4xx/nas100d-setup.c +++ b/arch/arm/mach-ixp4xx/nas100d-setup.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/serial.h> #include <linux/serial_8250.h> +#include <linux/leds.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -37,6 +38,36 @@ static struct platform_device nas100d_flash = { .resource = &nas100d_flash_resource, }; +#ifdef CONFIG_LEDS_IXP4XX +static struct resource nas100d_led_resources[] = { + { + .name = "wlan", /* green led */ + .start = 0, + .end = 0, + .flags = IXP4XX_GPIO_LOW, + }, + { + .name = "ready", /* blue power led (off is flashing!) */ + .start = 15, + .end = 15, + .flags = IXP4XX_GPIO_LOW, + }, + { + .name = "disk", /* yellow led */ + .start = 3, + .end = 3, + .flags = IXP4XX_GPIO_LOW, + }, +}; + +static struct platform_device nas100d_leds = { + .name = "IXP4XX-GPIO-LED", + .id = -1, + .num_resources = ARRAY_SIZE(nas100d_led_resources), + .resource = nas100d_led_resources, +}; +#endif + static struct ixp4xx_i2c_pins nas100d_i2c_gpio_pins = { .sda_pin = NAS100D_SDA_PIN, .scl_pin = NAS100D_SCL_PIN, @@ -95,7 +126,9 @@ static struct platform_device nas100d_uart = { static struct platform_device *nas100d_devices[] __initdata = { &nas100d_i2c_controller, &nas100d_flash, - &nas100d_uart, +#ifdef CONFIG_LEDS_IXP4XX + &nas100d_leds, +#endif }; static void nas100d_power_off(void) @@ -122,6 +155,12 @@ static void __init nas100d_init(void) pm_power_off = nas100d_power_off; + /* This is only useful on a modified machine, but it is valuable + * to have it first in order to see debug messages, and so that + * it does *not* get removed if platform_add_devices fails! + */ + (void)platform_device_register(&nas100d_uart); + platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices)); } diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c index 55411f21d838..749a337494d3 100644 --- a/arch/arm/mach-ixp4xx/nslu2-setup.c +++ b/arch/arm/mach-ixp4xx/nslu2-setup.c @@ -7,6 +7,7 @@ * Copyright (C) 2003-2004 MontaVista Software, Inc. * * Author: Mark Rakes <mrakes at mac.com> + * Author: Rod Whitby <rod@whitby.id.au> * Maintainers: http://www.nslu2-linux.org/ * * Fixed missing init_time in MACHINE_START kas11 10/22/04 @@ -16,6 +17,7 @@ #include <linux/kernel.h> #include <linux/serial.h> #include <linux/serial_8250.h> +#include <linux/leds.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -43,6 +45,42 @@ static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = { .scl_pin = NSLU2_SCL_PIN, }; +#ifdef CONFIG_LEDS_IXP4XX +static struct resource nslu2_led_resources[] = { + { + .name = "ready", /* green led */ + .start = NSLU2_LED_GRN, + .end = NSLU2_LED_GRN, + .flags = IXP4XX_GPIO_HIGH, + }, + { + .name = "status", /* red led */ + .start = NSLU2_LED_RED, + .end = NSLU2_LED_RED, + .flags = IXP4XX_GPIO_HIGH, + }, + { + .name = "disk-1", + .start = NSLU2_LED_DISK1, + .end = NSLU2_LED_DISK1, + .flags = IXP4XX_GPIO_LOW, + }, + { + .name = "disk-2", + .start = NSLU2_LED_DISK2, + .end = NSLU2_LED_DISK2, + .flags = IXP4XX_GPIO_LOW, + }, +}; + +static struct platform_device nslu2_leds = { + .name = "IXP4XX-GPIO-LED", + .id = -1, + .num_resources = ARRAY_SIZE(nslu2_led_resources), + .resource = nslu2_led_resources, +}; +#endif + static struct platform_device nslu2_i2c_controller = { .name = "IXP4XX-I2C", .id = 0, @@ -102,8 +140,10 @@ static struct platform_device nslu2_uart = { static struct platform_device *nslu2_devices[] __initdata = { &nslu2_i2c_controller, &nslu2_flash, - &nslu2_uart, &nslu2_beeper, +#ifdef CONFIG_LEDS_IXP4XX + &nslu2_leds, +#endif }; static void nslu2_power_off(void) @@ -127,6 +167,12 @@ static void __init nslu2_init(void) pm_power_off = nslu2_power_off; + /* This is only useful on a modified machine, but it is valuable + * to have it first in order to see debug messages, and so that + * it does *not* get removed if platform_add_devices fails! + */ + (void)platform_device_register(&nslu2_uart); + platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices)); } diff --git a/arch/arm/mach-pnx4008/clock.c b/arch/arm/mach-pnx4008/clock.c index 285b22f631e9..f582ed2ec43c 100644 --- a/arch/arm/mach-pnx4008/clock.c +++ b/arch/arm/mach-pnx4008/clock.c @@ -767,6 +767,54 @@ static struct clk *onchip_clks[] = { &uart6_ck, }; +static int local_clk_enable(struct clk *clk) +{ + int ret = 0; + + if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate + && clk->user_rate) + ret = clk->set_rate(clk, clk->user_rate); + return ret; +} + +static void local_clk_disable(struct clk *clk) +{ + if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate) + clk->set_rate(clk, 0); +} + +static void local_clk_unuse(struct clk *clk) +{ + if (clk->usecount > 0 && !(--clk->usecount)) { + local_clk_disable(clk); + if (clk->parent) + local_clk_unuse(clk->parent); + } +} + +static int local_clk_use(struct clk *clk) +{ + int ret = 0; + if (clk->usecount++ == 0) { + if (clk->parent) + ret = local_clk_use(clk->parent); + + if (ret != 0) { + clk->usecount--; + goto out; + } + + ret = local_clk_enable(clk); + + if (ret != 0 && clk->parent) { + local_clk_unuse(clk->parent); + clk->usecount--; + } + } +out: + return ret; +} + static int local_set_rate(struct clk *clk, u32 rate) { int ret = -EINVAL; @@ -847,28 +895,12 @@ unsigned long clk_get_rate(struct clk *clk) } EXPORT_SYMBOL(clk_get_rate); -static int local_clk_enable(struct clk *clk) -{ - int ret = 0; - - if (!(clk->flags & FIXED_RATE) && !clk->rate && clk->set_rate - && clk->user_rate) - ret = clk->set_rate(clk, clk->user_rate); - return ret; -} - -static void local_clk_disable(struct clk *clk) -{ - if (!(clk->flags & FIXED_RATE) && clk->rate && clk->set_rate) - clk->set_rate(clk, 0); -} - int clk_enable(struct clk *clk) { int ret = 0; clock_lock(); - ret = local_clk_enable(clk); + ret = local_clk_use(clk); clock_unlock(); return ret; } @@ -878,70 +910,11 @@ EXPORT_SYMBOL(clk_enable); void clk_disable(struct clk *clk) { clock_lock(); - local_clk_disable(clk); - clock_unlock(); -} - -EXPORT_SYMBOL(clk_disable); - -static void local_clk_unuse(struct clk *clk) -{ - if (clk->usecount > 0 && !(--clk->usecount)) { - local_clk_disable(clk); - if (clk->parent) - local_clk_unuse(clk->parent); - } -} - -static int local_clk_use(struct clk *clk) -{ - int ret = 0; - if (clk->usecount++ == 0) { - if (clk->parent) - ret = local_clk_use(clk->parent); - - if (ret != 0) { - clk->usecount--; - goto out; - } - - ret = local_clk_enable(clk); - - if (ret != 0 && clk->parent) { - local_clk_unuse(clk->parent); - clk->usecount--; - } - } -out: - return ret; -} - -/* The main purpose of clk_use ans clk_unuse functions - * is to control switching 13MHz oscillator and PLL1 (13'MHz), - * so that they are disabled whenever none of PLL2-5 is using them. - * Although in theory these functions should work with any clock, - * please use them only on PLL2 - PLL5 to avoid confusion. - */ -int clk_use(struct clk *clk) -{ - int ret = 0; - - clock_lock(); - ret = local_clk_use(clk); - clock_unlock(); - return ret; -} -EXPORT_SYMBOL(clk_use); - -void clk_unuse(struct clk *clk) -{ - - clock_lock(); local_clk_unuse(clk); clock_unlock(); } -EXPORT_SYMBOL(clk_unuse); +EXPORT_SYMBOL(clk_disable); long clk_round_rate(struct clk *clk, unsigned long rate) { @@ -995,7 +968,7 @@ static int __init clk_init(void) __FUNCTION__, (*clkp)->name, (*clkp)->rate); } - clk_use(&ck_pll4); + local_clk_use(&ck_pll4); /* if ck_13MHz is not used, disable it. */ if (ck_13MHz.usecount == 0) diff --git a/arch/arm/mach-pnx4008/serial.c b/arch/arm/mach-pnx4008/serial.c index 10322384e45d..95a1b3f964a2 100644 --- a/arch/arm/mach-pnx4008/serial.c +++ b/arch/arm/mach-pnx4008/serial.c @@ -20,7 +20,7 @@ #include <linux/serial_core.h> #include <linux/serial_reg.h> -#include <asm/arch/pm.h> +#include <asm/arch/gpio.h> #include <asm/arch/clock.h> diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig index 0c334136db7c..7b786d725636 100644 --- a/arch/arm/mach-s3c2410/Kconfig +++ b/arch/arm/mach-s3c2410/Kconfig @@ -114,9 +114,15 @@ config MACH_NEXCODER_2440 endmenu +config S3C2410_CLOCK + bool + help + Clock code for the S3C2410, and similar processors + config CPU_S3C2410 bool depends on ARCH_S3C2410 + select S3C2410_CLOCK help Support for S3C2410 and S3C2410A family from the S3C24XX line of Samsung Mobile CPUs. @@ -130,6 +136,7 @@ config CPU_S3C244X config CPU_S3C2440 bool depends on ARCH_S3C2410 + select S3C2410_CLOCK select CPU_S3C244X help Support for S3C2440 Samsung Mobile CPU based systems. @@ -137,6 +144,7 @@ config CPU_S3C2440 config CPU_S3C2442 bool depends on ARCH_S3C2420 + select S3C2410_CLOCK select CPU_S3C244X help Support for S3C2442 Samsung Mobile CPU based systems. diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile index 5e09355cd4f4..372dbcea1434 100644 --- a/arch/arm/mach-s3c2410/Makefile +++ b/arch/arm/mach-s3c2410/Makefile @@ -29,6 +29,10 @@ obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o obj-$(CONFIG_CPU_S3C244X) += s3c244x.o obj-$(CONFIG_CPU_S3C244X) += s3c244x-irq.o +# Clock control + +obj-$(CONFIG_S3C2410_CLOCK) += s3c2410-clock.o + # S3C2440 support obj-$(CONFIG_CPU_S3C2440) += s3c2440.o s3c2440-dsc.o diff --git a/arch/arm/mach-s3c2410/clock.c b/arch/arm/mach-s3c2410/clock.c index 99d174612b53..c5c93c333ac6 100644 --- a/arch/arm/mach-s3c2410/clock.c +++ b/arch/arm/mach-s3c2410/clock.c @@ -3,7 +3,7 @@ * Copyright (c) 2004-2005 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * - * S3C2410 Clock control support + * S3C24XX Core clock control support * * Based on, and code from linux/arch/arm/mach-versatile/clock.c ** @@ -56,25 +56,6 @@ static LIST_HEAD(clocks); DEFINE_MUTEX(clocks_mutex); -/* old functions */ - -void inline s3c24xx_clk_enable(unsigned int clocks, unsigned int enable) -{ - unsigned long clkcon; - - clkcon = __raw_readl(S3C2410_CLKCON); - - if (enable) - clkcon |= clocks; - else - clkcon &= ~clocks; - - /* ensure none of the special function bits set */ - clkcon &= ~(S3C2410_CLKCON_IDLE|S3C2410_CLKCON_POWER | 3); - - __raw_writel(clkcon, S3C2410_CLKCON); -} - /* enable and disable calls for use with the clk struct */ static int clk_null_enable(struct clk *clk, int enable) @@ -82,12 +63,6 @@ static int clk_null_enable(struct clk *clk, int enable) return 0; } -int s3c24xx_clkcon_enable(struct clk *clk, int enable) -{ - s3c24xx_clk_enable(clk->ctrlbit, enable); - return 0; -} - /* Clock API calls */ struct clk *clk_get(struct device *dev, const char *id) @@ -173,8 +148,11 @@ unsigned long clk_get_rate(struct clk *clk) if (clk->rate != 0) return clk->rate; - while (clk->parent != NULL && clk->rate == 0) - clk = clk->parent; + if (clk->get_rate != NULL) + return (clk->get_rate)(clk); + + if (clk->parent != NULL) + return clk_get_rate(clk->parent); return clk->rate; } @@ -233,28 +211,6 @@ EXPORT_SYMBOL(clk_set_rate); EXPORT_SYMBOL(clk_get_parent); EXPORT_SYMBOL(clk_set_parent); -/* base clock enable */ - -static int s3c24xx_upll_enable(struct clk *clk, int enable) -{ - unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW); - unsigned long orig = clkslow; - - if (enable) - clkslow &= ~S3C2410_CLKSLOW_UCLK_OFF; - else - clkslow |= S3C2410_CLKSLOW_UCLK_OFF; - - __raw_writel(clkslow, S3C2410_CLKSLOW); - - /* if we started the UPLL, then allow to settle */ - - if (enable && (orig & S3C2410_CLKSLOW_UCLK_OFF)) - udelay(200); - - return 0; -} - /* base clocks */ static struct clk clk_xtal = { @@ -265,15 +221,14 @@ static struct clk clk_xtal = { .ctrlbit = 0, }; -static struct clk clk_upll = { +struct clk clk_upll = { .name = "upll", .id = -1, .parent = NULL, - .enable = s3c24xx_upll_enable, .ctrlbit = 0, }; -static struct clk clk_f = { +struct clk clk_f = { .name = "fclk", .id = -1, .rate = 0, @@ -281,7 +236,7 @@ static struct clk clk_f = { .ctrlbit = 0, }; -static struct clk clk_h = { +struct clk clk_h = { .name = "hclk", .id = -1, .rate = 0, @@ -289,7 +244,7 @@ static struct clk clk_h = { .ctrlbit = 0, }; -static struct clk clk_p = { +struct clk clk_p = { .name = "pclk", .id = -1, .rate = 0, @@ -426,108 +381,6 @@ struct clk s3c24xx_uclk = { .id = -1, }; - -/* standard clock definitions */ - -static struct clk init_clocks[] = { - { - .name = "nand", - .id = -1, - .parent = &clk_h, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_NAND, - }, { - .name = "lcd", - .id = -1, - .parent = &clk_h, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_LCDC, - }, { - .name = "usb-host", - .id = -1, - .parent = &clk_h, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_USBH, - }, { - .name = "usb-device", - .id = -1, - .parent = &clk_h, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_USBD, - }, { - .name = "timers", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_PWMT, - }, { - .name = "sdi", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_SDI, - }, { - .name = "uart", - .id = 0, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_UART0, - }, { - .name = "uart", - .id = 1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_UART1, - }, { - .name = "uart", - .id = 2, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_UART2, - }, { - .name = "gpio", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_GPIO, - }, { - .name = "rtc", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_RTC, - }, { - .name = "adc", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_ADC, - }, { - .name = "i2c", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_IIC, - }, { - .name = "iis", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_IIS, - }, { - .name = "spi", - .id = -1, - .parent = &clk_p, - .enable = s3c24xx_clkcon_enable, - .ctrlbit = S3C2410_CLKCON_SPI, - }, { - .name = "watchdog", - .id = -1, - .parent = &clk_p, - .ctrlbit = 0, - } -}; - /* initialise the clock system */ int s3c24xx_register_clock(struct clk *clk) @@ -537,14 +390,6 @@ int s3c24xx_register_clock(struct clk *clk) if (clk->enable == NULL) clk->enable = clk_null_enable; - /* if this is a standard clock, set the usage state */ - - if (clk->ctrlbit && clk->enable == s3c24xx_clkcon_enable) { - unsigned long clkcon = __raw_readl(S3C2410_CLKCON); - - clk->usage = (clkcon & clk->ctrlbit) ? 1 : 0; - } - /* add to the list of available clocks */ mutex_lock(&clocks_mutex); @@ -561,44 +406,17 @@ int __init s3c24xx_setup_clocks(unsigned long xtal, unsigned long hclk, unsigned long pclk) { - unsigned long upllcon = __raw_readl(S3C2410_UPLLCON); - unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW); - struct clk *clkp = init_clocks; - int ptr; - int ret; - - printk(KERN_INFO "S3C2410 Clocks, (c) 2004 Simtec Electronics\n"); + printk(KERN_INFO "S3C24XX Clocks, (c) 2004 Simtec Electronics\n"); /* initialise the main system clocks */ clk_xtal.rate = xtal; - clk_upll.rate = s3c2410_get_pll(upllcon, xtal); + clk_upll.rate = s3c2410_get_pll(__raw_readl(S3C2410_UPLLCON), xtal); clk_h.rate = hclk; clk_p.rate = pclk; clk_f.rate = fclk; - /* We must be careful disabling the clocks we are not intending to - * be using at boot time, as subsytems such as the LCD which do - * their own DMA requests to the bus can cause the system to lockup - * if they where in the middle of requesting bus access. - * - * Disabling the LCD clock if the LCD is active is very dangerous, - * and therefore the bootloader should be careful to not enable - * the LCD clock if it is not needed. - */ - - mutex_lock(&clocks_mutex); - - s3c24xx_clk_enable(S3C2410_CLKCON_NAND, 0); - s3c24xx_clk_enable(S3C2410_CLKCON_USBH, 0); - s3c24xx_clk_enable(S3C2410_CLKCON_USBD, 0); - s3c24xx_clk_enable(S3C2410_CLKCON_ADC, 0); - s3c24xx_clk_enable(S3C2410_CLKCON_IIC, 0); - s3c24xx_clk_enable(S3C2410_CLKCON_SPI, 0); - - mutex_unlock(&clocks_mutex); - /* assume uart clocks are correctly setup */ /* register our clocks */ @@ -618,27 +436,5 @@ int __init s3c24xx_setup_clocks(unsigned long xtal, if (s3c24xx_register_clock(&clk_p) < 0) printk(KERN_ERR "failed to register cpu pclk\n"); - - if (s3c24xx_register_clock(&clk_usb_bus) < 0) - printk(KERN_ERR "failed to register usb bus clock\n"); - - /* register clocks from clock array */ - - for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) { - ret = s3c24xx_register_clock(clkp); - if (ret < 0) { - printk(KERN_ERR "Failed to register clock %s (%d)\n", - clkp->name, ret); - } - } - - /* show the clock-slow value */ - - printk("CLOCK: Slow mode (%ld.%ld MHz), %s, MPLL %s, UPLL %s\n", - print_mhz(xtal / ( 2 * S3C2410_CLKSLOW_GET_SLOWVAL(clkslow))), - (clkslow & S3C2410_CLKSLOW_SLOW) ? "slow" : "fast", - (clkslow & S3C2410_CLKSLOW_MPLL_OFF) ? "off" : "on", - (clkslow & S3C2410_CLKSLOW_UCLK_OFF) ? "off" : "on"); - return 0; } diff --git a/arch/arm/mach-s3c2410/clock.h b/arch/arm/mach-s3c2410/clock.h index 01bb458bf8eb..9456c81eb5d3 100644 --- a/arch/arm/mach-s3c2410/clock.h +++ b/arch/arm/mach-s3c2410/clock.h @@ -22,6 +22,7 @@ struct clk { int (*enable)(struct clk *, int enable); int (*set_rate)(struct clk *c, unsigned long rate); + unsigned long (*get_rate)(struct clk *c); unsigned long (*round_rate)(struct clk *c, unsigned long rate); int (*set_parent)(struct clk *c, struct clk *parent); }; @@ -36,6 +37,13 @@ extern struct clk s3c24xx_uclk; extern struct clk clk_usb_bus; +/* core clock support */ + +extern struct clk clk_f; +extern struct clk clk_h; +extern struct clk clk_p; +extern struct clk clk_upll; + /* exports for arch/arm/mach-s3c2410 * * Please DO NOT use these outside of arch/arm/mach-s3c2410 @@ -43,7 +51,8 @@ extern struct clk clk_usb_bus; extern struct mutex clocks_mutex; -extern int s3c24xx_clkcon_enable(struct clk *clk, int enable); +extern int s3c2410_clkcon_enable(struct clk *clk, int enable); + extern int s3c24xx_register_clock(struct clk *clk); extern int s3c24xx_setup_clocks(unsigned long xtal, diff --git a/arch/arm/mach-s3c2410/cpu.h b/arch/arm/mach-s3c2410/cpu.h index 40862899b2f1..21c62dc29bb2 100644 --- a/arch/arm/mach-s3c2410/cpu.h +++ b/arch/arm/mach-s3c2410/cpu.h @@ -73,5 +73,6 @@ extern struct sys_timer s3c24xx_timer; /* system device classes */ +extern struct sysdev_class s3c2410_sysclass; extern struct sysdev_class s3c2440_sysclass; extern struct sysdev_class s3c2442_sysclass; diff --git a/arch/arm/mach-s3c2410/s3c2410-clock.c b/arch/arm/mach-s3c2410/s3c2410-clock.c new file mode 100644 index 000000000000..fd17c60e1132 --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2410-clock.c @@ -0,0 +1,263 @@ +/* linux/arch/arm/mach-s3c2410/clock.c + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410,S3C2440,S3C2442 Clock control support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/sysdev.h> +#include <linux/clk.h> +#include <linux/mutex.h> +#include <linux/delay.h> + +#include <asm/hardware.h> +#include <asm/io.h> + +#include <asm/arch/regs-clock.h> +#include <asm/arch/regs-gpio.h> + +#include "clock.h" +#include "cpu.h" + +int s3c2410_clkcon_enable(struct clk *clk, int enable) +{ + unsigned int clocks = clk->ctrlbit; + unsigned long clkcon; + + clkcon = __raw_readl(S3C2410_CLKCON); + + if (enable) + clkcon |= clocks; + else + clkcon &= ~clocks; + + /* ensure none of the special function bits set */ + clkcon &= ~(S3C2410_CLKCON_IDLE|S3C2410_CLKCON_POWER); + + __raw_writel(clkcon, S3C2410_CLKCON); + + return 0; +} + +static int s3c2410_upll_enable(struct clk *clk, int enable) +{ + unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW); + unsigned long orig = clkslow; + + if (enable) + clkslow &= ~S3C2410_CLKSLOW_UCLK_OFF; + else + clkslow |= S3C2410_CLKSLOW_UCLK_OFF; + + __raw_writel(clkslow, S3C2410_CLKSLOW); + + /* if we started the UPLL, then allow to settle */ + + if (enable && (orig & S3C2410_CLKSLOW_UCLK_OFF)) + udelay(200); + + return 0; +} + +/* standard clock definitions */ + +static struct clk init_clocks_disable[] = { + { + .name = "nand", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_NAND, + }, { + .name = "sdi", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_SDI, + }, { + .name = "adc", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_ADC, + }, { + .name = "i2c", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_IIC, + }, { + .name = "iis", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_IIS, + }, { + .name = "spi", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_SPI, + } +}; + +static struct clk init_clocks[] = { + { + .name = "lcd", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_LCDC, + }, { + .name = "gpio", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_GPIO, + }, { + .name = "usb-host", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_USBH, + }, { + .name = "usb-device", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_USBD, + }, { + .name = "timers", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_PWMT, + }, { + .name = "uart", + .id = 0, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_UART0, + }, { + .name = "uart", + .id = 1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_UART1, + }, { + .name = "uart", + .id = 2, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_UART2, + }, { + .name = "rtc", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_RTC, + }, { + .name = "watchdog", + .id = -1, + .parent = &clk_p, + .ctrlbit = 0, + } +}; + +/* s3c2410_baseclk_add() + * + * Add all the clocks used by the s3c2410 or compatible CPUs + * such as the S3C2440 and S3C2442. + * + * We cannot use a system device as we are needed before any + * of the init-calls that initialise the devices are actually + * done. +*/ + +int __init s3c2410_baseclk_add(void) +{ + unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW); + unsigned long clkcon = __raw_readl(S3C2410_CLKCON); + struct clk *clkp; + struct clk *xtal; + int ret; + int ptr; + + clk_upll.enable = s3c2410_upll_enable; + + if (s3c24xx_register_clock(&clk_usb_bus) < 0) + printk(KERN_ERR "failed to register usb bus clock\n"); + + /* register clocks from clock array */ + + clkp = init_clocks; + for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) { + /* ensure that we note the clock state */ + + clkp->usage = clkcon & clkp->ctrlbit ? 1 : 0; + + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + } + + /* We must be careful disabling the clocks we are not intending to + * be using at boot time, as subsytems such as the LCD which do + * their own DMA requests to the bus can cause the system to lockup + * if they where in the middle of requesting bus access. + * + * Disabling the LCD clock if the LCD is active is very dangerous, + * and therefore the bootloader should be careful to not enable + * the LCD clock if it is not needed. + */ + + /* install (and disable) the clocks we do not need immediately */ + + clkp = init_clocks_disable; + for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) { + + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + + s3c2410_clkcon_enable(clkp, 0); + } + + /* show the clock-slow value */ + + xtal = clk_get(NULL, "xtal"); + + printk("CLOCK: Slow mode (%ld.%ld MHz), %s, MPLL %s, UPLL %s\n", + print_mhz(clk_get_rate(xtal) / + ( 2 * S3C2410_CLKSLOW_GET_SLOWVAL(clkslow))), + (clkslow & S3C2410_CLKSLOW_SLOW) ? "slow" : "fast", + (clkslow & S3C2410_CLKSLOW_MPLL_OFF) ? "off" : "on", + (clkslow & S3C2410_CLKSLOW_UCLK_OFF) ? "off" : "on"); + + return 0; +} diff --git a/arch/arm/mach-s3c2410/s3c2410.c b/arch/arm/mach-s3c2410/s3c2410.c index 0852e87a79c4..a110cff9cf6b 100644 --- a/arch/arm/mach-s3c2410/s3c2410.c +++ b/arch/arm/mach-s3c2410/s3c2410.c @@ -27,6 +27,7 @@ #include <linux/list.h> #include <linux/timer.h> #include <linux/init.h> +#include <linux/sysdev.h> #include <linux/platform_device.h> #include <asm/mach/arch.h> @@ -108,11 +109,33 @@ void __init s3c2410_init_clocks(int xtal) */ s3c24xx_setup_clocks(xtal, fclk, hclk, pclk); + s3c2410_baseclk_add(); } +struct sysdev_class s3c2410_sysclass = { + set_kset_name("s3c2410-core"), +}; + +static struct sys_device s3c2410_sysdev = { + .cls = &s3c2410_sysclass, +}; + +/* need to register class before we actually register the device, and + * we also need to ensure that it has been initialised before any of the + * drivers even try to use it (even if not on an s3c2440 based system) + * as a driver which may support both 2410 and 2440 may try and use it. +*/ + +static int __init s3c2410_core_init(void) +{ + return sysdev_class_register(&s3c2410_sysclass); +} + +core_initcall(s3c2410_core_init); + int __init s3c2410_init(void) { printk("S3C2410: Initialising architecture\n"); - return 0; + return sysdev_register(&s3c2410_sysdev); } diff --git a/arch/arm/mach-s3c2410/s3c2410.h b/arch/arm/mach-s3c2410/s3c2410.h index 4d5312a48209..73f1a2474a61 100644 --- a/arch/arm/mach-s3c2410/s3c2410.h +++ b/arch/arm/mach-s3c2410/s3c2410.h @@ -29,6 +29,8 @@ extern void s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no); extern void s3c2410_init_clocks(int xtal); +extern int s3c2410_baseclk_add(void); + #else #define s3c2410_init_clocks NULL #define s3c2410_init_uarts NULL diff --git a/arch/arm/mach-s3c2410/s3c2440-clock.c b/arch/arm/mach-s3c2410/s3c2440-clock.c index d7a30ed6c327..15796864d010 100644 --- a/arch/arm/mach-s3c2410/s3c2440-clock.c +++ b/arch/arm/mach-s3c2410/s3c2440-clock.c @@ -91,7 +91,7 @@ static int s3c2440_camif_upll_setrate(struct clk *clk, unsigned long rate) static struct clk s3c2440_clk_cam = { .name = "camif", .id = -1, - .enable = s3c24xx_clkcon_enable, + .enable = s3c2410_clkcon_enable, .ctrlbit = S3C2440_CLKCON_CAMERA, }; @@ -105,7 +105,7 @@ static struct clk s3c2440_clk_cam_upll = { static struct clk s3c2440_clk_ac97 = { .name = "ac97", .id = -1, - .enable = s3c24xx_clkcon_enable, + .enable = s3c2410_clkcon_enable, .ctrlbit = S3C2440_CLKCON_CAMERA, }; diff --git a/arch/arm/mach-s3c2410/s3c2442-clock.c b/arch/arm/mach-s3c2410/s3c2442-clock.c index 5b7b301eb522..d9f54b5cab7f 100644 --- a/arch/arm/mach-s3c2410/s3c2442-clock.c +++ b/arch/arm/mach-s3c2410/s3c2442-clock.c @@ -102,7 +102,7 @@ static int s3c2442_camif_upll_setrate(struct clk *clk, unsigned long rate) static struct clk s3c2442_clk_cam = { .name = "camif", .id = -1, - .enable = s3c24xx_clkcon_enable, + .enable = s3c2410_clkcon_enable, .ctrlbit = S3C2440_CLKCON_CAMERA, }; diff --git a/arch/arm/mach-s3c2410/s3c244x.c b/arch/arm/mach-s3c2410/s3c244x.c index 96852a7000db..838bc525e836 100644 --- a/arch/arm/mach-s3c2410/s3c244x.c +++ b/arch/arm/mach-s3c2410/s3c244x.c @@ -34,6 +34,7 @@ #include <asm/arch/regs-gpioj.h> #include <asm/arch/regs-dsc.h> +#include "s3c2410.h" #include "s3c2440.h" #include "s3c244x.h" #include "clock.h" @@ -118,6 +119,7 @@ void __init s3c244x_init_clocks(int xtal) */ s3c24xx_setup_clocks(xtal, fclk, hclk, pclk); + s3c2410_baseclk_add(); } #ifdef CONFIG_PM diff --git a/arch/arm/nwfpe/fpmodule.c b/arch/arm/nwfpe/fpmodule.c index 2dfe1ac42ee8..7d977d23f026 100644 --- a/arch/arm/nwfpe/fpmodule.c +++ b/arch/arm/nwfpe/fpmodule.c @@ -33,7 +33,8 @@ #include <linux/signal.h> #include <linux/sched.h> #include <linux/init.h> -/* XXX */ + +#include <asm/thread_notify.h> #include "softfloat.h" #include "fpopcode.h" @@ -56,16 +57,28 @@ void fp_send_sig(unsigned long sig, struct task_struct *p, int priv); extern char fpe_type[]; #endif +static int nwfpe_notify(struct notifier_block *self, unsigned long cmd, void *v) +{ + struct thread_info *thread = v; + + if (cmd == THREAD_NOTIFY_FLUSH) + nwfpe_init_fpa(&thread->fpstate); + + return NOTIFY_DONE; +} + +static struct notifier_block nwfpe_notifier_block = { + .notifier_call = nwfpe_notify, +}; + /* kernel function prototypes required */ void fp_setup(void); /* external declarations for saved kernel symbols */ extern void (*kern_fp_enter)(void); -extern void (*fp_init)(union fp_state *); /* Original value of fp_enter from kernel before patched by fpe_init. */ static void (*orig_fp_enter)(void); -static void (*orig_fp_init)(union fp_state *); /* forward declarations */ extern void nwfpe_enter(void); @@ -88,20 +101,20 @@ static int __init fpe_init(void) printk(KERN_WARNING "NetWinder Floating Point Emulator V0.97 (" NWFPE_BITS " precision)\n"); + thread_register_notifier(&nwfpe_notifier_block); + /* Save pointer to the old FP handler and then patch ourselves in */ orig_fp_enter = kern_fp_enter; - orig_fp_init = fp_init; kern_fp_enter = nwfpe_enter; - fp_init = nwfpe_init_fpa; return 0; } static void __exit fpe_exit(void) { + thread_unregister_notifier(&nwfpe_notifier_block); /* Restore the values we saved earlier. */ kern_fp_enter = orig_fp_enter; - fp_init = orig_fp_init; } /* diff --git a/arch/arm/plat-omap/timer32k.c b/arch/arm/plat-omap/timer32k.c index b2a943bf11ef..3461a6c9665c 100644 --- a/arch/arm/plat-omap/timer32k.c +++ b/arch/arm/plat-omap/timer32k.c @@ -210,7 +210,8 @@ static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id, now = omap_32k_sync_timer_read(); - while (now - omap_32k_last_tick >= OMAP_32K_TICKS_PER_HZ) { + while ((signed long)(now - omap_32k_last_tick) + >= OMAP_32K_TICKS_PER_HZ) { omap_32k_last_tick += OMAP_32K_TICKS_PER_HZ; timer_tick(regs); } diff --git a/arch/arm/vfp/Makefile b/arch/arm/vfp/Makefile index afabac31dd1d..7e136e77971a 100644 --- a/arch/arm/vfp/Makefile +++ b/arch/arm/vfp/Makefile @@ -7,6 +7,9 @@ # EXTRA_CFLAGS := -DDEBUG # EXTRA_AFLAGS := -DDEBUG +AFLAGS :=$(AFLAGS:-msoft-float=-Wa,-mfpu=softvfp+vfp) +LDFLAGS +=--no-warn-mismatch + obj-y += vfp.o -vfp-$(CONFIG_VFP) += entry.o vfpmodule.o vfphw.o vfpsingle.o vfpdouble.o +vfp-$(CONFIG_VFP) += vfpmodule.o entry.o vfphw.o vfpsingle.o vfpdouble.o diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S index a3f65b47aea9..eb683cd77163 100644 --- a/arch/arm/vfp/vfphw.S +++ b/arch/arm/vfp/vfphw.S @@ -192,7 +192,7 @@ vfp_get_double: add pc, pc, r0, lsl #3 mov r0, r0 .irp dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 - mrrc p11, 1, r0, r1, c\dr @ fmrrd r0, r1, d\dr + fmrrd r0, r1, d\dr mov pc, lr .endr @@ -206,6 +206,6 @@ vfp_put_double: add pc, pc, r0, lsl #3 mov r0, r0 .irp dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 - mcrr p11, 1, r1, r2, c\dr @ fmdrr r1, r2, d\dr + fmdrr d\dr, r1, r2 mov pc, lr .endr diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index 03486be04193..2476f4c2e760 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -15,6 +15,8 @@ #include <linux/signal.h> #include <linux/sched.h> #include <linux/init.h> + +#include <asm/thread_notify.h> #include <asm/vfp.h> #include "vfpinstr.h" @@ -36,38 +38,55 @@ union vfp_state *last_VFP_context; */ unsigned int VFP_arch; -/* - * Per-thread VFP initialisation. - */ -void vfp_flush_thread(union vfp_state *vfp) +static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v) { - memset(vfp, 0, sizeof(union vfp_state)); + struct thread_info *thread = v; + union vfp_state *vfp = &thread->vfpstate; - vfp->hard.fpexc = FPEXC_ENABLE; - vfp->hard.fpscr = FPSCR_ROUND_NEAREST; + switch (cmd) { + case THREAD_NOTIFY_FLUSH: + /* + * Per-thread VFP initialisation. + */ + memset(vfp, 0, sizeof(union vfp_state)); - /* - * Disable VFP to ensure we initialise it first. - */ - fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE); + vfp->hard.fpexc = FPEXC_ENABLE; + vfp->hard.fpscr = FPSCR_ROUND_NEAREST; - /* - * Ensure we don't try to overwrite our newly initialised - * state information on the first fault. - */ - if (last_VFP_context == vfp) - last_VFP_context = NULL; -} + /* + * Disable VFP to ensure we initialise it first. + */ + fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE); -/* - * Per-thread VFP cleanup. - */ -void vfp_release_thread(union vfp_state *vfp) -{ - if (last_VFP_context == vfp) - last_VFP_context = NULL; + /* + * FALLTHROUGH: Ensure we don't try to overwrite our newly + * initialised state information on the first fault. + */ + + case THREAD_NOTIFY_RELEASE: + /* + * Per-thread VFP cleanup. + */ + if (last_VFP_context == vfp) + last_VFP_context = NULL; + break; + + case THREAD_NOTIFY_SWITCH: + /* + * Always disable VFP so we can lazily save/restore the + * old state. + */ + fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE); + break; + } + + return NOTIFY_DONE; } +static struct notifier_block vfp_notifier_block = { + .notifier_call = vfp_notifier, +}; + /* * Raise a SIGFPE for the current process. * sicode describes the signal being raised. @@ -281,6 +300,8 @@ static int __init vfp_init(void) (vfpsid & FPSID_VARIANT_MASK) >> FPSID_VARIANT_BIT, (vfpsid & FPSID_REV_MASK) >> FPSID_REV_BIT); vfp_vector = vfp_support_entry; + + thread_register_notifier(&vfp_notifier_block); } return 0; } |