diff options
Diffstat (limited to 'arch/microblaze')
46 files changed, 585 insertions, 818 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index e446bab..a93ed04 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -46,7 +46,7 @@ config GENERIC_CLOCKEVENTS def_bool y config GENERIC_GPIO - def_bool y + bool config GENERIC_CSUM def_bool y diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile index 4c4e58e..5365519 100644 --- a/arch/microblaze/boot/Makefile +++ b/arch/microblaze/boot/Makefile @@ -8,7 +8,7 @@ obj-y += linked_dtb.o targets := linux.bin linux.bin.gz simpleImage.% -OBJCOPYFLAGS := -O binary +OBJCOPYFLAGS := -R .note -R .comment -R .note.gnu.build-id -O binary # Ensure system.dtb exists $(obj)/linked_dtb.o: $(obj)/system.dtb diff --git a/arch/microblaze/configs/mmu_defconfig b/arch/microblaze/configs/mmu_defconfig index b3f5eec..a470f57 100644 --- a/arch/microblaze/configs/mmu_defconfig +++ b/arch/microblaze/configs/mmu_defconfig @@ -1,25 +1,22 @@ CONFIG_EXPERIMENTAL=y CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_FHANDLE=y +CONFIG_AUDIT=y +CONFIG_AUDIT_LOGINUID_IMMUTABLE=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y +CONFIG_SYSFS_DEPRECATED=y CONFIG_SYSFS_DEPRECATED_V2=y -CONFIG_BLK_DEV_INITRD=y -CONFIG_INITRAMFS_SOURCE="rootfs.cpio" -CONFIG_INITRAMFS_COMPRESSION_GZIP=y -# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -CONFIG_EXPERT=y CONFIG_KALLSYMS_ALL=y -CONFIG_KALLSYMS_EXTRA_PASS=y -# CONFIG_HOTPLUG is not set # CONFIG_BASE_FULL is not set -# CONFIG_FUTEX is not set -# CONFIG_EPOLL is not set -# CONFIG_SIGNALFD is not set -# CONFIG_SHMEM is not set +CONFIG_EMBEDDED=y CONFIG_SLAB=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y # CONFIG_BLK_DEV_BSG is not set +CONFIG_PARTITION_ADVANCED=y +# CONFIG_EFI_PARTITION is not set CONFIG_OPT_LIB_ASM=y CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1 CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1 @@ -37,33 +34,53 @@ CONFIG_UNIX=y CONFIG_INET=y # CONFIG_INET_LRO is not set # CONFIG_IPV6 is not set +CONFIG_MTD=y CONFIG_PROC_DEVICETREE=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=8192 CONFIG_NETDEVICES=y -CONFIG_NET_ETHERNET=y CONFIG_XILINX_EMACLITE=y +CONFIG_XILINX_LL_TEMAC=y # CONFIG_INPUT is not set # CONFIG_SERIO is not set # CONFIG_VT is not set +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_UARTLITE=y CONFIG_SERIAL_UARTLITE_CONSOLE=y # CONFIG_HW_RANDOM is not set +CONFIG_XILINX_HWICAP=y +CONFIG_I2C=y +CONFIG_I2C_XILINX=y +CONFIG_SPI=y +CONFIG_SPI_XILINX=y +CONFIG_GPIOLIB=y +CONFIG_GPIO_SYSFS=y +CONFIG_GPIO_XILINX=y # CONFIG_HWMON is not set +CONFIG_WATCHDOG=y +CONFIG_XILINX_WATCHDOG=y +CONFIG_FB=y +CONFIG_FB_XILINX=y # CONFIG_USB_SUPPORT is not set +CONFIG_UIO=y +CONFIG_UIO_PDRV=y +CONFIG_UIO_PDRV_GENIRQ=y +CONFIG_UIO_DMEM_GENIRQ=y CONFIG_EXT2_FS=y # CONFIG_DNOTIFY is not set +CONFIG_CRAMFS=y +CONFIG_ROMFS_FS=y CONFIG_NFS_FS=y -CONFIG_NFS_V3=y CONFIG_CIFS=y CONFIG_CIFS_STATS=y CONFIG_CIFS_STATS2=y -CONFIG_PARTITION_ADVANCED=y -CONFIG_DEBUG_KERNEL=y CONFIG_DETECT_HUNG_TASK=y CONFIG_DEBUG_SLAB=y CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_INFO=y -# CONFIG_RCU_CPU_STALL_DETECTOR is not set CONFIG_EARLY_PRINTK=y +CONFIG_KEYS=y +CONFIG_ENCRYPTED_KEYS=y +CONFIG_KEYS_DEBUG_PROC_KEYS=y # CONFIG_CRYPTO_ANSI_CPRNG is not set diff --git a/arch/microblaze/configs/nommu_defconfig b/arch/microblaze/configs/nommu_defconfig index 0249e4b..5454a6d 100644 --- a/arch/microblaze/configs/nommu_defconfig +++ b/arch/microblaze/configs/nommu_defconfig @@ -1,41 +1,40 @@ CONFIG_EXPERIMENTAL=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y +CONFIG_FHANDLE=y +CONFIG_AUDIT=y +CONFIG_AUDIT_LOGINUID_IMMUTABLE=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_BSD_PROCESS_ACCT_V3=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y +CONFIG_SYSFS_DEPRECATED=y CONFIG_SYSFS_DEPRECATED_V2=y -CONFIG_EXPERT=y CONFIG_KALLSYMS_ALL=y -CONFIG_KALLSYMS_EXTRA_PASS=y -# CONFIG_HOTPLUG is not set # CONFIG_BASE_FULL is not set +CONFIG_EMBEDDED=y CONFIG_SLAB=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y # CONFIG_BLK_DEV_BSG is not set -# CONFIG_OPT_LIB_FUNCTION is not set +CONFIG_PARTITION_ADVANCED=y +# CONFIG_EFI_PARTITION is not set CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1 CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1 CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1 CONFIG_XILINX_MICROBLAZE0_USE_DIV=1 CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=2 CONFIG_XILINX_MICROBLAZE0_USE_FPU=2 -CONFIG_HIGH_RES_TIMERS=y CONFIG_HZ_100=y CONFIG_CMDLINE_BOOL=y -CONFIG_BINFMT_FLAT=y +CONFIG_CMDLINE_FORCE=y CONFIG_NET=y CONFIG_PACKET=y CONFIG_UNIX=y CONFIG_INET=y # CONFIG_INET_LRO is not set # CONFIG_IPV6 is not set -# CONFIG_PREVENT_FIRMWARE_BUILD is not set CONFIG_MTD=y -CONFIG_MTD_CONCAT=y -CONFIG_MTD_PARTITIONS=y CONFIG_MTD_CMDLINE_PARTS=y CONFIG_MTD_CHAR=y CONFIG_MTD_BLOCK=y @@ -45,41 +44,55 @@ CONFIG_MTD_CFI_AMDSTD=y CONFIG_MTD_RAM=y CONFIG_MTD_UCLINUX=y CONFIG_PROC_DEVICETREE=y -CONFIG_BLK_DEV_NBD=y CONFIG_BLK_DEV_RAM=y +CONFIG_BLK_DEV_RAM_SIZE=8192 CONFIG_NETDEVICES=y -CONFIG_NET_ETHERNET=y +CONFIG_XILINX_EMACLITE=y +CONFIG_XILINX_LL_TEMAC=y # CONFIG_INPUT is not set # CONFIG_SERIO is not set # CONFIG_VT is not set +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_UARTLITE=y CONFIG_SERIAL_UARTLITE_CONSOLE=y -CONFIG_HW_RANDOM=y +# CONFIG_HW_RANDOM is not set +CONFIG_XILINX_HWICAP=y +CONFIG_I2C=y +CONFIG_I2C_XILINX=y +CONFIG_SPI=y +CONFIG_SPI_XILINX=y +CONFIG_GPIOLIB=y +CONFIG_GPIO_SYSFS=y +CONFIG_GPIO_XILINX=y # CONFIG_HWMON is not set -CONFIG_VIDEO_OUTPUT_CONTROL=y +CONFIG_WATCHDOG=y +CONFIG_XILINX_WATCHDOG=y +CONFIG_FB=y +CONFIG_FB_XILINX=y +# CONFIG_USB_SUPPORT is not set +CONFIG_UIO=y +CONFIG_UIO_PDRV=y +CONFIG_UIO_PDRV_GENIRQ=y +CONFIG_UIO_DMEM_GENIRQ=y CONFIG_EXT2_FS=y # CONFIG_DNOTIFY is not set CONFIG_CRAMFS=y CONFIG_ROMFS_FS=y CONFIG_NFS_FS=y -CONFIG_NFS_V3=y CONFIG_NFS_V3_ACL=y -CONFIG_UNUSED_SYMBOLS=y -CONFIG_DEBUG_FS=y -CONFIG_DEBUG_KERNEL=y -CONFIG_DEBUG_SHIRQ=y +CONFIG_NLS=y CONFIG_DETECT_HUNG_TASK=y -CONFIG_SCHEDSTATS=y -CONFIG_TIMER_STATS=y -CONFIG_DEBUG_OBJECTS=y -CONFIG_DEBUG_OBJECTS_SELFTEST=y -CONFIG_DEBUG_OBJECTS_FREE=y -CONFIG_DEBUG_OBJECTS_TIMERS=y +CONFIG_DEBUG_SLAB=y +CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_INFO=y -CONFIG_DEBUG_LIST=y -CONFIG_DEBUG_SG=y -# CONFIG_RCU_CPU_STALL_DETECTOR is not set -CONFIG_SYSCTL_SYSCALL_CHECK=y CONFIG_EARLY_PRINTK=y +CONFIG_KEYS=y +CONFIG_ENCRYPTED_KEYS=y +CONFIG_KEYS_DEBUG_PROC_KEYS=y +CONFIG_CRYPTO_ECB=y +CONFIG_CRYPTO_MD4=y +CONFIG_CRYPTO_MD5=y +CONFIG_CRYPTO_ARC4=y +CONFIG_CRYPTO_DES=y # CONFIG_CRYPTO_ANSI_CPRNG is not set -# CONFIG_CRC32 is not set diff --git a/arch/microblaze/include/asm/cpuinfo.h b/arch/microblaze/include/asm/cpuinfo.h index d8f0133..7d6831a 100644 --- a/arch/microblaze/include/asm/cpuinfo.h +++ b/arch/microblaze/include/asm/cpuinfo.h @@ -38,6 +38,7 @@ struct cpuinfo { u32 use_exc; u32 ver_code; u32 mmu; + u32 mmu_privins; u32 endian; /* CPU caches */ diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h index 8fbb0ec..3a3e5b8 100644 --- a/arch/microblaze/include/asm/dma-mapping.h +++ b/arch/microblaze/include/asm/dma-mapping.h @@ -16,7 +16,7 @@ #define _ASM_MICROBLAZE_DMA_MAPPING_H /* - * See Documentation/PCI/PCI-DMA-mapping.txt and + * See Documentation/DMA-API-HOWTO.txt and * Documentation/DMA-API.txt for documentation. */ @@ -28,12 +28,12 @@ #include <linux/dma-attrs.h> #include <asm/io.h> #include <asm-generic/dma-coherent.h> +#include <asm/cacheflush.h> #define DMA_ERROR_CODE (~(dma_addr_t)0x0) #define __dma_alloc_coherent(dev, gfp, size, handle) NULL #define __dma_free_coherent(size, addr) ((void)0) -#define __dma_sync(addr, size, rw) ((void)0) static inline unsigned long device_to_mask(struct device *dev) { @@ -95,6 +95,22 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask) #include <asm-generic/dma-mapping-common.h> +static inline void __dma_sync(unsigned long paddr, + size_t size, enum dma_data_direction direction) +{ + switch (direction) { + case DMA_TO_DEVICE: + case DMA_BIDIRECTIONAL: + flush_dcache_range(paddr, paddr + size); + break; + case DMA_FROM_DEVICE: + invalidate_dcache_range(paddr, paddr + size); + break; + default: + BUG(); + } +} + static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { struct dma_map_ops *ops = get_dma_ops(dev); @@ -135,7 +151,7 @@ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { BUG_ON(direction == DMA_NONE); - __dma_sync(vaddr, size, (int)direction); + __dma_sync(virt_to_phys(vaddr), size, (int)direction); } #endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */ diff --git a/arch/microblaze/include/asm/elf.h b/arch/microblaze/include/asm/elf.h index 098dfdd..834849f 100644 --- a/arch/microblaze/include/asm/elf.h +++ b/arch/microblaze/include/asm/elf.h @@ -16,13 +16,15 @@ * I've snaffled the value from the microblaze binutils source code * /binutils/microblaze/include/elf/microblaze.h */ -#define EM_XILINX_MICROBLAZE 0xbaab -#define ELF_ARCH EM_XILINX_MICROBLAZE +#define EM_MICROBLAZE 189 +#define EM_MICROBLAZE_OLD 0xbaab +#define ELF_ARCH EM_MICROBLAZE /* * This is used to ensure we don't load something for the wrong architecture. */ -#define elf_check_arch(x) ((x)->e_machine == EM_XILINX_MICROBLAZE) +#define elf_check_arch(x) ((x)->e_machine == EM_MICROBLAZE \ + || (x)->e_machine == EM_MICROBLAZE_OLD) /* * These are used to set parameters in the core dumps. diff --git a/arch/microblaze/include/asm/futex.h b/arch/microblaze/include/asm/futex.h index b0526d2..ff8cde1 100644 --- a/arch/microblaze/include/asm/futex.h +++ b/arch/microblaze/include/asm/futex.h @@ -24,7 +24,7 @@ .word 1b,4b,2b,4b; \ .previous;" \ : "=&r" (oldval), "=&r" (ret) \ - : "b" (uaddr), "i" (-EFAULT), "r" (oparg) \ + : "r" (uaddr), "i" (-EFAULT), "r" (oparg) \ ); \ }) diff --git a/arch/microblaze/include/asm/irqflags.h b/arch/microblaze/include/asm/irqflags.h index c4532f0..c9a6262 100644 --- a/arch/microblaze/include/asm/irqflags.h +++ b/arch/microblaze/include/asm/irqflags.h @@ -14,7 +14,7 @@ #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR -static inline unsigned long arch_local_irq_save(void) +static inline notrace unsigned long arch_local_irq_save(void) { unsigned long flags; asm volatile(" msrclr %0, %1 \n" @@ -25,7 +25,7 @@ static inline unsigned long arch_local_irq_save(void) return flags; } -static inline void arch_local_irq_disable(void) +static inline notrace void arch_local_irq_disable(void) { /* this uses r0 without declaring it - is that correct? */ asm volatile(" msrclr r0, %0 \n" @@ -35,7 +35,7 @@ static inline void arch_local_irq_disable(void) : "memory"); } -static inline void arch_local_irq_enable(void) +static inline notrace void arch_local_irq_enable(void) { /* this uses r0 without declaring it - is that correct? */ asm volatile(" msrset r0, %0 \n" @@ -47,7 +47,7 @@ static inline void arch_local_irq_enable(void) #else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */ -static inline unsigned long arch_local_irq_save(void) +static inline notrace unsigned long arch_local_irq_save(void) { unsigned long flags, tmp; asm volatile (" mfs %0, rmsr \n" @@ -61,7 +61,7 @@ static inline unsigned long arch_local_irq_save(void) return flags; } -static inline void arch_local_irq_disable(void) +static inline notrace void arch_local_irq_disable(void) { unsigned long tmp; asm volatile(" mfs %0, rmsr \n" @@ -74,7 +74,7 @@ static inline void arch_local_irq_disable(void) : "memory"); } -static inline void arch_local_irq_enable(void) +static inline notrace void arch_local_irq_enable(void) { unsigned long tmp; asm volatile(" mfs %0, rmsr \n" @@ -89,7 +89,7 @@ static inline void arch_local_irq_enable(void) #endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */ -static inline unsigned long arch_local_save_flags(void) +static inline notrace unsigned long arch_local_save_flags(void) { unsigned long flags; asm volatile(" mfs %0, rmsr \n" @@ -100,7 +100,7 @@ static inline unsigned long arch_local_save_flags(void) return flags; } -static inline void arch_local_irq_restore(unsigned long flags) +static inline notrace void arch_local_irq_restore(unsigned long flags) { asm volatile(" mts rmsr, %0 \n" " nop \n" @@ -109,12 +109,12 @@ static inline void arch_local_irq_restore(unsigned long flags) : "memory"); } -static inline bool arch_irqs_disabled_flags(unsigned long flags) +static inline notrace bool arch_irqs_disabled_flags(unsigned long flags) { return (flags & MSR_IE) == 0; } -static inline bool arch_irqs_disabled(void) +static inline notrace bool arch_irqs_disabled(void) { return arch_irqs_disabled_flags(arch_local_save_flags()); } diff --git a/arch/microblaze/include/asm/mmu_context_mm.h b/arch/microblaze/include/asm/mmu_context_mm.h index 3e5c254..d686477 100644 --- a/arch/microblaze/include/asm/mmu_context_mm.h +++ b/arch/microblaze/include/asm/mmu_context_mm.h @@ -11,7 +11,7 @@ #ifndef _ASM_MICROBLAZE_MMU_CONTEXT_H #define _ASM_MICROBLAZE_MMU_CONTEXT_H -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/bitops.h> #include <asm/mmu.h> #include <asm-generic/mm_hooks.h> diff --git a/arch/microblaze/include/asm/namei.h b/arch/microblaze/include/asm/namei.h deleted file mode 100644 index 61d60b8..0000000 --- a/arch/microblaze/include/asm/namei.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Copyright (C) 2006 Atmark Techno, Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#ifndef _ASM_MICROBLAZE_NAMEI_H -#define _ASM_MICROBLAZE_NAMEI_H - -#ifdef __KERNEL__ - -/* This dummy routine maybe changed to something useful - * for /usr/gnemul/ emulation stuff. - * Look at asm-sparc/namei.h for details. - */ -#define __emul_prefix() NULL - -#endif /* __KERNEL__ */ - -#endif /* _ASM_MICROBLAZE_NAMEI_H */ diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h index 746df91..32764cd 100644 --- a/arch/microblaze/include/asm/pci-bridge.h +++ b/arch/microblaze/include/asm/pci-bridge.h @@ -10,31 +10,19 @@ #include <linux/pci.h> #include <linux/list.h> #include <linux/ioport.h> +#include <asm-generic/pci-bridge.h> struct device_node; -enum { - /* Force re-assigning all resources (ignore firmware - * setup completely) - */ - PCI_REASSIGN_ALL_RSRC = 0x00000001, - - /* Re-assign all bus numbers */ - PCI_REASSIGN_ALL_BUS = 0x00000002, - - /* Do not try to assign, just use existing setup */ - PCI_PROBE_ONLY = 0x00000004, - - /* Don't bother with ISA alignment unless the bridge has - * ISA forwarding enabled - */ - PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, - - /* Enable domain numbers in /proc */ - PCI_ENABLE_PROC_DOMAINS = 0x00000010, - /* ... except for domain 0 */ - PCI_COMPAT_DOMAIN_0 = 0x00000020, -}; +#ifdef CONFIG_PCI +extern struct list_head hose_list; +extern int pcibios_vaddr_is_ioport(void __iomem *address); +#else +static inline int pcibios_vaddr_is_ioport(void __iomem *address) +{ + return 0; +} +#endif /* * Structure of a PCI controller (host bridge) @@ -110,16 +98,6 @@ static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus) return bus->sysdata; } -static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) -{ - struct pci_controller *host; - - if (bus->self) - return pci_device_to_OF_node(bus->self); - host = pci_bus_to_host(bus); - return host ? host->dn : NULL; -} - static inline int isa_vaddr_is_ioport(void __iomem *address) { /* No specific ISA handling on ppc32 at this stage, it @@ -164,40 +142,5 @@ extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev); extern void pcibios_free_controller(struct pci_controller *phb); extern void pcibios_setup_phb_resources(struct pci_controller *hose); -#ifdef CONFIG_PCI -extern unsigned int pci_flags; - -static inline void pci_set_flags(int flags) -{ - pci_flags = flags; -} - -static inline void pci_add_flags(int flags) -{ - pci_flags |= flags; -} - -static inline int pci_has_flag(int flag) -{ - return pci_flags & flag; -} - -extern struct list_head hose_list; - -extern int pcibios_vaddr_is_ioport(void __iomem *address); -#else -static inline int pcibios_vaddr_is_ioport(void __iomem *address) -{ - return 0; -} - -static inline void pci_set_flags(int flags) { } -static inline void pci_add_flags(int flags) { } -static inline int pci_has_flag(int flag) -{ - return 0; -} -#endif /* CONFIG_PCI */ - #endif /* __KERNEL__ */ #endif /* _ASM_MICROBLAZE_PCI_BRIDGE_H */ diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h index ba65cf4..1dd9d6b 100644 --- a/arch/microblaze/include/asm/pci.h +++ b/arch/microblaze/include/asm/pci.h @@ -40,8 +40,7 @@ struct pci_dev; * Set this to 1 if you want the kernel to re-assign all PCI * bus numbers (don't do that on ppc64 yet !) */ -#define pcibios_assign_all_busses() \ - (pci_has_flag(PCI_REASSIGN_ALL_BUS)) +#define pcibios_assign_all_busses() 0 static inline void pcibios_set_master(struct pci_dev *dev) { diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h index aed2a6b..7283bfb 100644 --- a/arch/microblaze/include/asm/processor.h +++ b/arch/microblaze/include/asm/processor.h @@ -125,9 +125,6 @@ struct thread_struct { .pgdir = swapper_pg_dir, \ } -/* Do necessary setup to start up a newly executed thread. */ -void start_thread(struct pt_regs *regs, - unsigned long pc, unsigned long usp); /* Free all resources held by a thread. */ extern inline void release_thread(struct task_struct *dead_task) diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h index d0890d3..20c5e8e 100644 --- a/arch/microblaze/include/asm/prom.h +++ b/arch/microblaze/include/asm/prom.h @@ -21,28 +21,17 @@ #include <linux/types.h> #include <asm/irq.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #define HAVE_ARCH_DEVTREE_FIXUPS /* Other Prototypes */ -extern int early_uartlite_console(void); -extern int early_uart16550_console(void); +enum early_consoles { + UARTLITE = 1, + UART16550 = 2, +}; -#ifdef CONFIG_PCI -/* - * PCI <-> OF matching functions - * (XXX should these be here?) - */ -struct pci_bus; -struct pci_dev; -extern int pci_device_from_OF_node(struct device_node *node, - u8 *bus, u8 *devfn); -extern struct device_node *pci_busdev_to_OF_node(struct pci_bus *bus, - int devfn); -extern struct device_node *pci_device_to_OF_node(struct pci_dev *dev); -extern void pci_create_OF_bus_map(void); -#endif +extern int of_early_console(void *version); /* * OF address retreival & translation diff --git a/arch/microblaze/include/asm/ptrace.h b/arch/microblaze/include/asm/ptrace.h index d9b6630..816bee6 100644 --- a/arch/microblaze/include/asm/ptrace.h +++ b/arch/microblaze/include/asm/ptrace.h @@ -61,8 +61,6 @@ struct pt_regs { #define instruction_pointer(regs) ((regs)->pc) #define profile_pc(regs) instruction_pointer(regs) -void show_regs(struct pt_regs *); - #else /* __KERNEL__ */ /* pt_regs offsets used by gdbserver etc in ptrace syscalls */ diff --git a/arch/microblaze/include/asm/pvr.h b/arch/microblaze/include/asm/pvr.h index a10bec6..4bbdb4c 100644 --- a/arch/microblaze/include/asm/pvr.h +++ b/arch/microblaze/include/asm/pvr.h @@ -111,16 +111,16 @@ struct pvr_s { /* Target family PVR mask */ #define PVR10_TARGET_FAMILY_MASK 0xFF000000 -/* MMU descrtiption */ +/* MMU description */ #define PVR11_USE_MMU 0xC0000000 #define PVR11_MMU_ITLB_SIZE 0x38000000 #define PVR11_MMU_DTLB_SIZE 0x07000000 #define PVR11_MMU_TLB_ACCESS 0x00C00000 #define PVR11_MMU_ZONES 0x003C0000 +#define PVR11_MMU_PRIVINS 0x00010000 /* MSR Reset value PVR mask */ #define PVR11_MSR_RESET_VALUE_MASK 0x000007FF - /* PVR access macros */ #define PVR_IS_FULL(_pvr) (_pvr.pvr[0] & PVR0_PVR_FULL_MASK) #define PVR_USE_BARREL(_pvr) (_pvr.pvr[0] & PVR0_USE_BARREL_MASK) @@ -216,6 +216,7 @@ struct pvr_s { #define PVR_MMU_DTLB_SIZE(_pvr) (_pvr.pvr[11] & PVR11_MMU_DTLB_SIZE) #define PVR_MMU_TLB_ACCESS(_pvr) (_pvr.pvr[11] & PVR11_MMU_TLB_ACCESS) #define PVR_MMU_ZONES(_pvr) (_pvr.pvr[11] & PVR11_MMU_ZONES) +#define PVR_MMU_PRIVINS(pvr) (pvr.pvr[11] & PVR11_MMU_PRIVINS) /* endian */ #define PVR_ENDIAN(_pvr) (_pvr.pvr[0] & PVR0_ENDI) diff --git a/arch/microblaze/include/asm/setup.h b/arch/microblaze/include/asm/setup.h index 8f39689..904e5ef 100644 --- a/arch/microblaze/include/asm/setup.h +++ b/arch/microblaze/include/asm/setup.h @@ -23,6 +23,7 @@ extern char cmd_line[COMMAND_LINE_SIZE]; void early_printk(const char *fmt, ...); int setup_early_printk(char *opt); +void remap_early_printk(void); void disable_early_printk(void); #if defined(CONFIG_EARLY_PRINTK) diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h index e6a2284..5a433cb 100644 --- a/arch/microblaze/include/asm/system.h +++ b/arch/microblaze/include/asm/system.h @@ -17,8 +17,6 @@ #include <asm-generic/cmpxchg.h> #include <asm-generic/cmpxchg-local.h> -#define __ARCH_WANT_INTERRUPTS_ON_CTXSW - struct task_struct; struct thread_info; @@ -96,11 +94,4 @@ extern struct dentry *of_debugfs_root; #define arch_align_stack(x) (x) -/* - * MicroBlaze doesn't handle unaligned accesses in hardware. - * - * Based on this we force the IP header alignment in network drivers. - */ -#define NET_IP_ALIGN 2 - #endif /* _ASM_MICROBLAZE_SYSTEM_H */ diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h index 5bb95a1..072b007 100644 --- a/arch/microblaze/include/asm/uaccess.h +++ b/arch/microblaze/include/asm/uaccess.h @@ -95,7 +95,7 @@ static inline int ___range_ok(unsigned long addr, unsigned long size) * - "addr", "addr + size" and "size" are all below the limit */ #define access_ok(type, addr, size) \ - (get_fs().seg > (((unsigned long)(addr)) | \ + (get_fs().seg >= (((unsigned long)(addr)) | \ (size) | ((unsigned long)(addr) + (size)))) /* || printk("access_ok failed for %s at 0x%08lx (size %d), seg 0x%08x\n", diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c index f70a604..916aaed 100644 --- a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c +++ b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c @@ -72,6 +72,7 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu) CI(pvr_user2, USER2); CI(mmu, USE_MMU); + CI(mmu_privins, MMU_PRIVINS); CI(endian, ENDIAN); CI(use_icache, USE_ICACHE); diff --git a/arch/microblaze/kernel/cpu/cpuinfo-static.c b/arch/microblaze/kernel/cpu/cpuinfo-static.c index b16b994..592bb2e 100644 --- a/arch/microblaze/kernel/cpu/cpuinfo-static.c +++ b/arch/microblaze/kernel/cpu/cpuinfo-static.c @@ -119,6 +119,7 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu) ci->pvr_user2 = fcpu(cpu, "xlnx,pvr-user2"); ci->mmu = fcpu(cpu, "xlnx,use-mmu"); + ci->mmu_privins = fcpu(cpu, "xlnx,mmu-privileged-instr"); ci->endian = fcpu(cpu, "xlnx,endianness"); ci->ver_code = 0; diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c index c1640c5..54194b2 100644 --- a/arch/microblaze/kernel/cpu/cpuinfo.c +++ b/arch/microblaze/kernel/cpu/cpuinfo.c @@ -34,6 +34,7 @@ const struct cpu_ver_key cpu_ver_lookup[] = { {"8.00.a", 0x12}, {"8.00.b", 0x13}, {"8.10.a", 0x14}, + {"8.20.a", 0x15}, {NULL, 0}, }; @@ -88,4 +89,8 @@ void __init setup_cpuinfo(void) printk(KERN_WARNING "%s: Unsupported PVR setting\n", __func__); set_cpuinfo_static(&cpuinfo, cpu); } + + if (cpuinfo.mmu_privins) + printk(KERN_WARNING "%s: Stream instructions enabled" + " - USERSPACE CAN LOCK THIS KERNEL!\n", __func__); } diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c index b4048af..7b5dca7 100644 --- a/arch/microblaze/kernel/cpu/mb.c +++ b/arch/microblaze/kernel/cpu/mb.c @@ -97,6 +97,10 @@ static int show_cpuinfo(struct seq_file *m, void *v) (cpuinfo.use_exc & PVR2_FPU_EXC_MASK) ? "fpu " : "", (cpuinfo.use_exc & PVR2_USE_FSL_EXC) ? "fsl " : ""); + count += seq_printf(m, + "Stream-insns:\t%sprivileged\n", + cpuinfo.mmu_privins ? "un" : ""); + if (cpuinfo.use_icache) count += seq_printf(m, "Icache:\t\t%ukB\tline length:\t%dB\n", @@ -110,10 +114,11 @@ static int show_cpuinfo(struct seq_file *m, void *v) "Dcache:\t\t%ukB\tline length:\t%dB\n", cpuinfo.dcache_size >> 10, cpuinfo.dcache_line_length); + seq_printf(m, "Dcache-Policy:\t"); if (cpuinfo.dcache_wb) - count += seq_printf(m, "\t\twrite-back\n"); + count += seq_printf(m, "write-back\n"); else - count += seq_printf(m, "\t\twrite-through\n"); + count += seq_printf(m, "write-through\n"); } else count += seq_printf(m, "Dcache:\t\tno\n"); diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c index 393e6b2..65a4af4 100644 --- a/arch/microblaze/kernel/dma.c +++ b/arch/microblaze/kernel/dma.c @@ -10,8 +10,8 @@ #include <linux/dma-mapping.h> #include <linux/gfp.h> #include <linux/dma-debug.h> +#include <linux/export.h> #include <asm/bug.h> -#include <asm/cacheflush.h> /* * Generic direct DMA implementation @@ -21,21 +21,6 @@ * can set archdata.dma_data to an unsigned long holding the offset. By * default the offset is PCI_DRAM_OFFSET. */ -static inline void __dma_sync_page(unsigned long paddr, unsigned long offset, - size_t size, enum dma_data_direction direction) -{ - switch (direction) { - case DMA_TO_DEVICE: - case DMA_BIDIRECTIONAL: - flush_dcache_range(paddr + offset, paddr + offset + size); - break; - case DMA_FROM_DEVICE: - invalidate_dcache_range(paddr + offset, paddr + offset + size); - break; - default: - BUG(); - } -} static unsigned long get_dma_direct_offset(struct device *dev) { @@ -91,7 +76,7 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, /* FIXME this part of code is untested */ for_each_sg(sgl, sg, nents, i) { sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev); - __dma_sync_page(page_to_phys(sg_page(sg)), sg->offset, + __dma_sync(page_to_phys(sg_page(sg)) + sg->offset, sg->length, direction); } @@ -116,7 +101,7 @@ static inline dma_addr_t dma_direct_map_page(struct device *dev, enum dma_data_direction direction, struct dma_attrs *attrs) { - __dma_sync_page(page_to_phys(page), offset, size, direction); + __dma_sync(page_to_phys(page) + offset, size, direction); return page_to_phys(page) + offset + get_dma_direct_offset(dev); } @@ -131,7 +116,63 @@ static inline void dma_direct_unmap_page(struct device *dev, * phys_to_virt is here because in __dma_sync_page is __virt_to_phys and * dma_address is physical address */ - __dma_sync_page(dma_address, 0 , size, direction); + __dma_sync(dma_address, size, direction); +} + +static inline void +dma_direct_sync_single_for_cpu(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + /* + * It's pointless to flush the cache as the memory segment + * is given to the CPU + */ + + if (direction == DMA_FROM_DEVICE) + __dma_sync(dma_handle, size, direction); +} + +static inline void +dma_direct_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + /* + * It's pointless to invalidate the cache if the device isn't + * supposed to write to the relevant region + */ + + if (direction == DMA_TO_DEVICE) + __dma_sync(dma_handle, size, direction); +} + +static inline void +dma_direct_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sgl, int nents, + enum dma_data_direction direction) +{ + struct scatterlist *sg; + int i; + + /* FIXME this part of code is untested */ + if (direction == DMA_FROM_DEVICE) + for_each_sg(sgl, sg, nents, i) + __dma_sync(sg->dma_address, sg->length, direction); +} + +static inline void +dma_direct_sync_sg_for_device(struct device *dev, + struct scatterlist *sgl, int nents, + enum dma_data_direction direction) +{ + struct scatterlist *sg; + int i; + + /* FIXME this part of code is untested */ + if (direction == DMA_TO_DEVICE) + for_each_sg(sgl, sg, nents, i) + __dma_sync(sg->dma_address, sg->length, direction); } struct dma_map_ops dma_direct_ops = { @@ -142,6 +183,10 @@ struct dma_map_ops dma_direct_ops = { .dma_supported = dma_direct_dma_supported, .map_page = dma_direct_map_page, .unmap_page = dma_direct_unmap_page, + .sync_single_for_cpu = dma_direct_sync_single_for_cpu, + .sync_single_for_device = dma_direct_sync_single_for_device, + .sync_sg_for_cpu = dma_direct_sync_sg_for_cpu, + .sync_sg_for_device = dma_direct_sync_sg_for_device, }; EXPORT_SYMBOL(dma_direct_ops); diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c index c3616a0..d26d92d 100644 --- a/arch/microblaze/kernel/early_printk.c +++ b/arch/microblaze/kernel/early_printk.c @@ -35,7 +35,7 @@ static void early_printk_uartlite_putc(char c) * we'll never timeout on a working UART. */ - unsigned retries = 10000; + unsigned retries = 1000000; /* read status bit - 0x8 offset */ while (--retries && (in_be32(base_addr + 8) & (1 << 3))) ; @@ -60,7 +60,7 @@ static void early_printk_uartlite_write(struct console *unused, static struct console early_serial_uartlite_console = { .name = "earlyser", .write = early_printk_uartlite_write, - .flags = CON_PRINTBUFFER, + .flags = CON_PRINTBUFFER | CON_BOOT, .index = -1, }; #endif /* CONFIG_SERIAL_UARTLITE_CONSOLE */ @@ -104,7 +104,7 @@ static void early_printk_uart16550_write(struct console *unused, static struct console early_serial_uart16550_console = { .name = "earlyser", .write = early_printk_uart16550_write, - .flags = CON_PRINTBUFFER, + .flags = CON_PRINTBUFFER | CON_BOOT, .index = -1, }; #endif /* CONFIG_SERIAL_8250_CONSOLE */ @@ -127,48 +127,56 @@ void early_printk(const char *fmt, ...) int __init setup_early_printk(char *opt) { + int version = 0; + if (early_console_initialized) return 1; -#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE - base_addr = early_uartlite_console(); + base_addr = of_early_console(&version); if (base_addr) { - early_console_initialized = 1; #ifdef CONFIG_MMU early_console_reg_tlb_alloc(base_addr); #endif - early_console = &early_serial_uartlite_console; - early_printk("early_printk_console is enabled at 0x%08x\n", - base_addr); - - /* register_console(early_console); */ - - return 0; - } -#endif /* CONFIG_SERIAL_UARTLITE_CONSOLE */ - + switch (version) { +#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE + case UARTLITE: + printk(KERN_INFO "Early console on uartlite " + "at 0x%08x\n", base_addr); + early_console = &early_serial_uartlite_console; + break; +#endif #ifdef CONFIG_SERIAL_8250_CONSOLE - base_addr = early_uart16550_console(); - base_addr &= ~3; /* clear register offset */ - if (base_addr) { - early_console_initialized = 1; -#ifdef CONFIG_MMU - early_console_reg_tlb_alloc(base_addr); + case UART16550: + printk(KERN_INFO "Early console on uart16650 " + "at 0x%08x\n", base_addr); + early_console = &early_serial_uart16550_console; + break; #endif - early_console = &early_serial_uart16550_console; - - early_printk("early_printk_console is enabled at 0x%08x\n", - base_addr); - - /* register_console(early_console); */ + default: + printk(KERN_INFO "Unsupported early console %d\n", + version); + return 1; + } + register_console(early_console); + early_console_initialized = 1; return 0; } -#endif /* CONFIG_SERIAL_8250_CONSOLE */ - return 1; } +/* Remap early console to virtual address and do not allocate one TLB + * only for early console because of performance degression */ +void __init remap_early_printk(void) +{ + if (!early_console_initialized || !early_console) + return; + printk(KERN_INFO "early_printk_console remaping from 0x%x to ", + base_addr); + base_addr = (u32) ioremap(base_addr, PAGE_SIZE); + printk(KERN_CONT "0x%x\n", base_addr); +} + void __init disable_early_printk(void) { if (!early_console_initialized || !early_console) diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c index 66fad23..6348dc8 100644 --- a/arch/microblaze/kernel/exceptions.c +++ b/arch/microblaze/kernel/exceptions.c @@ -119,7 +119,7 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, case MICROBLAZE_DIV_ZERO_EXCEPTION: if (user_mode(regs)) { pr_debug("Divide by zero exception in user mode\n"); - _exception(SIGILL, regs, FPE_INTDIV, addr); + _exception(SIGFPE, regs, FPE_INTDIV, addr); return; } printk(KERN_WARNING "Divide by zero exception " \ diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S index 56572e9..e62be83 100644 --- a/arch/microblaze/kernel/hw_exception_handler.S +++ b/arch/microblaze/kernel/hw_exception_handler.S @@ -1113,23 +1113,23 @@ lw_r10_vm: R3_TO_LWREG_VM_V (10); lw_r11_vm: R3_TO_LWREG_VM_V (11); lw_r12_vm: R3_TO_LWREG_VM_V (12); lw_r13_vm: R3_TO_LWREG_VM_V (13); -lw_r14_vm: R3_TO_LWREG_VM (14); +lw_r14_vm: R3_TO_LWREG_VM_V (14); lw_r15_vm: R3_TO_LWREG_VM_V (15); -lw_r16_vm: R3_TO_LWREG_VM (16); +lw_r16_vm: R3_TO_LWREG_VM_V (16); lw_r17_vm: R3_TO_LWREG_VM_V (17); lw_r18_vm: R3_TO_LWREG_VM_V (18); -lw_r19_vm: R3_TO_LWREG_VM (19); -lw_r20_vm: R3_TO_LWREG_VM (20); -lw_r21_vm: R3_TO_LWREG_VM (21); -lw_r22_vm: R3_TO_LWREG_VM (22); -lw_r23_vm: R3_TO_LWREG_VM (23); -lw_r24_vm: R3_TO_LWREG_VM (24); -lw_r25_vm: R3_TO_LWREG_VM (25); -lw_r26_vm: R3_TO_LWREG_VM (26); -lw_r27_vm: R3_TO_LWREG_VM (27); -lw_r28_vm: R3_TO_LWREG_VM (28); -lw_r29_vm: R3_TO_LWREG_VM (29); -lw_r30_vm: R3_TO_LWREG_VM (30); +lw_r19_vm: R3_TO_LWREG_VM_V (19); +lw_r20_vm: R3_TO_LWREG_VM_V (20); +lw_r21_vm: R3_TO_LWREG_VM_V (21); +lw_r22_vm: R3_TO_LWREG_VM_V (22); +lw_r23_vm: R3_TO_LWREG_VM_V (23); +lw_r24_vm: R3_TO_LWREG_VM_V (24); +lw_r25_vm: R3_TO_LWREG_VM_V (25); +lw_r26_vm: R3_TO_LWREG_VM_V (26); +lw_r27_vm: R3_TO_LWREG_VM_V (27); +lw_r28_vm: R3_TO_LWREG_VM_V (28); +lw_r29_vm: R3_TO_LWREG_VM_V (29); +lw_r30_vm: R3_TO_LWREG_VM_V (30); lw_r31_vm: R3_TO_LWREG_VM_V (31); sw_table_vm: @@ -1147,23 +1147,23 @@ sw_r10_vm: SWREG_TO_R3_VM_V (10); sw_r11_vm: SWREG_TO_R3_VM_V (11); sw_r12_vm: SWREG_TO_R3_VM_V (12); sw_r13_vm: SWREG_TO_R3_VM_V (13); -sw_r14_vm: SWREG_TO_R3_VM (14); +sw_r14_vm: SWREG_TO_R3_VM_V (14); sw_r15_vm: SWREG_TO_R3_VM_V (15); -sw_r16_vm: SWREG_TO_R3_VM (16); +sw_r16_vm: SWREG_TO_R3_VM_V (16); sw_r17_vm: SWREG_TO_R3_VM_V (17); sw_r18_vm: SWREG_TO_R3_VM_V (18); -sw_r19_vm: SWREG_TO_R3_VM (19); -sw_r20_vm: SWREG_TO_R3_VM (20); -sw_r21_vm: SWREG_TO_R3_VM (21); -sw_r22_vm: SWREG_TO_R3_VM (22); -sw_r23_vm: SWREG_TO_R3_VM (23); -sw_r24_vm: SWREG_TO_R3_VM (24); -sw_r25_vm: SWREG_TO_R3_VM (25); -sw_r26_vm: SWREG_TO_R3_VM (26); -sw_r27_vm: SWREG_TO_R3_VM (27); -sw_r28_vm: SWREG_TO_R3_VM (28); -sw_r29_vm: SWREG_TO_R3_VM (29); -sw_r30_vm: SWREG_TO_R3_VM (30); +sw_r19_vm: SWREG_TO_R3_VM_V (19); +sw_r20_vm: SWREG_TO_R3_VM_V (20); +sw_r21_vm: SWREG_TO_R3_VM_V (21); +sw_r22_vm: SWREG_TO_R3_VM_V (22); +sw_r23_vm: SWREG_TO_R3_VM_V (23); +sw_r24_vm: SWREG_TO_R3_VM_V (24); +sw_r25_vm: SWREG_TO_R3_VM_V (25); +sw_r26_vm: SWREG_TO_R3_VM_V (26); +sw_r27_vm: SWREG_TO_R3_VM_V (27); +sw_r28_vm: SWREG_TO_R3_VM_V (28); +sw_r29_vm: SWREG_TO_R3_VM_V (29); +sw_r30_vm: SWREG_TO_R3_VM_V (30); sw_r31_vm: SWREG_TO_R3_VM_V (31); #endif /* CONFIG_MMU */ diff --git a/arch/microblaze/kernel/intc.c b/arch/microblaze/kernel/intc.c index c88f066..eb41441 100644 --- a/arch/microblaze/kernel/intc.c +++ b/arch/microblaze/kernel/intc.c @@ -134,7 +134,7 @@ void __init init_IRQ(void) intr_type = be32_to_cpup(of_get_property(intc, "xlnx,kind-of-intr", NULL)); - if (intr_type >= (1 << (nr_irq + 1))) + if (intr_type > (u32)((1ULL << nr_irq) - 1)) printk(KERN_INFO " ERROR: Mismatch in kind-of-intr param\n"); #ifdef CONFIG_SELFMOD_INTC diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c index ce7ac84..e5d63a8 100644 --- a/arch/microblaze/kernel/irq.c +++ b/arch/microblaze/kernel/irq.c @@ -18,6 +18,7 @@ #include <linux/kernel_stat.h> #include <linux/irq.h> #include <linux/of_irq.h> +#include <linux/export.h> #include <asm/prom.h> diff --git a/arch/microblaze/kernel/module.c b/arch/microblaze/kernel/module.c index 0e73f66..142426f 100644 --- a/arch/microblaze/kernel/module.c +++ b/arch/microblaze/kernel/module.c @@ -18,37 +18,6 @@ #include <asm/pgtable.h> #include <asm/cacheflush.h> -void *module_alloc(unsigned long size) -{ - void *ret; - ret = (size == 0) ? NULL : vmalloc(size); - pr_debug("module_alloc (%08lx@%08lx)\n", size, (unsigned long int)ret); - return ret; -} - -void module_free(struct module *module, void *region) -{ - pr_debug("module_free(%s,%08lx)\n", module->name, - (unsigned long)region); - vfree(region); -} - -int module_frob_arch_sections(Elf_Ehdr *hdr, - Elf_Shdr *sechdrs, - char *secstrings, - struct module *mod) -{ - return 0; -} - -int apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, - unsigned int symindex, unsigned int relsec, struct module *module) -{ - printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n", - module->name); - return -ENOEXEC; -} - int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex, unsigned int relsec, struct module *module) { @@ -155,7 +124,3 @@ int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs, flush_dcache(); return 0; } - -void module_arch_cleanup(struct module *mod) -{ -} diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c index 968648a..95cc295 100644 --- a/arch/microblaze/kernel/process.c +++ b/arch/microblaze/kernel/process.c @@ -179,6 +179,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, ti->cpu_context.msr = (childregs->msr|MSR_VM); ti->cpu_context.msr &= ~MSR_UMS; /* switch_to to kernel mode */ + ti->cpu_context.msr &= ~MSR_IE; #endif ti->cpu_context.r15 = (unsigned long)ret_from_fork - 8; @@ -237,7 +238,6 @@ unsigned long get_wchan(struct task_struct *p) /* Set up a thread for executing a new program */ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp) { - set_fs(USER_DS); regs->pc = pc; regs->r1 = usp; regs->pt_mode = 0; diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c index b15cc21..977484a 100644 --- a/arch/microblaze/kernel/prom.c +++ b/arch/microblaze/kernel/prom.c @@ -53,69 +53,58 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) } #ifdef CONFIG_EARLY_PRINTK -/* MS this is Microblaze specifig function */ -static int __init early_init_dt_scan_serial(unsigned long node, - const char *uname, int depth, void *data) -{ - unsigned long l; - char *p; - const __be32 *addr; - - pr_debug("search \"serial\", depth: %d, uname: %s\n", depth, uname); - -/* find all serial nodes */ - if (strncmp(uname, "serial", 6) != 0) - return 0; - -/* find compatible node with uartlite */ - p = of_get_flat_dt_prop(node, "compatible", &l); - if ((strncmp(p, "xlnx,xps-uartlite", 17) != 0) && - (strncmp(p, "xlnx,opb-uartlite", 17) != 0) && - (strncmp(p, "xlnx,axi-uartlite", 17) != 0)) - return 0; - - addr = of_get_flat_dt_prop(node, "reg", &l); - return be32_to_cpup(addr); /* return address */ -} +char *stdout; -/* this function is looking for early uartlite console - Microblaze specific */ -int __init early_uartlite_console(void) -{ - return of_scan_flat_dt(early_init_dt_scan_serial, NULL); -} - -/* MS this is Microblaze specifig function */ -static int __init early_init_dt_scan_serial_full(unsigned long node, +int __init early_init_dt_scan_chosen_serial(unsigned long node, const char *uname, int depth, void *data) { unsigned long l; char *p; - unsigned int addr; - - pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname); - -/* find all serial nodes */ - if (strncmp(uname, "serial", 6) != 0) - return 0; - early_init_dt_check_for_initrd(node); - -/* find compatible node with uartlite */ - p = of_get_flat_dt_prop(node, "compatible", &l); - - if ((strncmp(p, "xlnx,xps-uart16550", 18) != 0) && - (strncmp(p, "xlnx,axi-uart16550", 18) != 0)) - return 0; - - addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l); - addr += *(u32 *)of_get_flat_dt_prop(node, "reg-offset", &l); - return be32_to_cpu(addr); /* return address */ + pr_debug("%s: depth: %d, uname: %s\n", __func__, depth, uname); + + if (depth == 1 && (strcmp(uname, "chosen") == 0 || + strcmp(uname, "chosen@0") == 0)) { + p = of_get_flat_dt_prop(node, "linux,stdout-path", &l); + if (p != NULL && l > 0) + stdout = p; /* store pointer to stdout-path */ + } + + if (stdout && strstr(stdout, uname)) { + p = of_get_flat_dt_prop(node, "compatible", &l); + pr_debug("Compatible string: %s\n", p); + + if ((strncmp(p, "xlnx,xps-uart16550", 18) == 0) || + (strncmp(p, "xlnx,axi-uart16550", 18) == 0)) { + unsigned int addr; + + *(u32 *)data = UART16550; + + addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l); + addr += *(u32 *)of_get_flat_dt_prop(node, + "reg-offset", &l); + /* clear register offset */ + return be32_to_cpu(addr) & ~3; + } + if ((strncmp(p, "xlnx,xps-uartlite", 17) == 0) || + (strncmp(p, "xlnx,opb-uartlite", 17) == 0) || + (strncmp(p, "xlnx,axi-uartlite", 17) == 0) || + (strncmp(p, "xlnx,mdm", 8) == 0)) { + unsigned int *addrp; + + *(u32 *)data = UARTLITE; + + addrp = of_get_flat_dt_prop(node, "reg", &l); + return be32_to_cpup(addrp); /* return address */ + } + } + return 0; } -/* this function is looking for early uartlite console - Microblaze specific */ -int __init early_uart16550_console(void) +/* this function is looking for early console - Microblaze specific */ +int __init of_early_console(void *version) { - return of_scan_flat_dt(early_init_dt_scan_serial_full, NULL); + return of_scan_flat_dt(early_init_dt_scan_chosen_serial, version); } #endif diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c index 6a8e0cc..043cb58 100644 --- a/arch/microblaze/kernel/ptrace.c +++ b/arch/microblaze/kernel/ptrace.c @@ -148,7 +148,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) ret = -1L; if (unlikely(current->audit_context)) - audit_syscall_entry(EM_XILINX_MICROBLAZE, regs->r12, + audit_syscall_entry(EM_MICROBLAZE, regs->r12, regs->r5, regs->r6, regs->r7, regs->r8); diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c index 8e2c09b..0e654a1 100644 --- a/arch/microblaze/kernel/setup.c +++ b/arch/microblaze/kernel/setup.c @@ -59,6 +59,11 @@ void __init setup_arch(char **cmdline_p) setup_memory(); +#ifdef CONFIG_EARLY_PRINTK + /* remap early console to virtual address */ + remap_early_printk(); +#endif + xilinx_pci_init(); #if defined(CONFIG_SELFMOD_INTC) || defined(CONFIG_SELFMOD_TIMER) diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S index d915a12..8789daa 100644 --- a/arch/microblaze/kernel/syscall_table.S +++ b/arch/microblaze/kernel/syscall_table.S @@ -173,7 +173,7 @@ ENTRY(sys_call_table) .long sys_ni_syscall /* sys_vm86 */ .long sys_ni_syscall /* Old sys_query_module */ .long sys_poll - .long sys_nfsservctl + .long sys_ni_syscall /* old nfsservctl */ .long sys_setresgid /* 170 */ .long sys_getresgid .long sys_prctl diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c index e5550ce..af74b11 100644 --- a/arch/microblaze/kernel/timer.c +++ b/arch/microblaze/kernel/timer.c @@ -308,7 +308,8 @@ unsigned long long notrace sched_clock(void) { if (timer_initialized) { struct clocksource *cs = &clocksource_microblaze; - cycle_t cyc = cnt32_to_63(cs->read(NULL)); + + cycle_t cyc = cnt32_to_63(cs->read(NULL)) & LLONG_MAX; return clocksource_cyc2ns(cyc, cs->mult, cs->shift); } return 0; diff --git a/arch/microblaze/lib/Makefile b/arch/microblaze/lib/Makefile index 10c320a..c13067b 100644 --- a/arch/microblaze/lib/Makefile +++ b/arch/microblaze/lib/Makefile @@ -25,5 +25,6 @@ lib-y += lshrdi3.o lib-y += modsi3.o lib-y += muldi3.o lib-y += mulsi3.o +lib-y += ucmpdi2.o lib-y += udivsi3.o lib-y += umodsi3.o diff --git a/arch/microblaze/lib/uaccess_old.S b/arch/microblaze/lib/uaccess_old.S index 5810cec..f037266 100644 --- a/arch/microblaze/lib/uaccess_old.S +++ b/arch/microblaze/lib/uaccess_old.S @@ -10,6 +10,7 @@ #include <linux/errno.h> #include <linux/linkage.h> +#include <asm/page.h> /* * int __strncpy_user(char *to, char *from, int len); @@ -33,8 +34,8 @@ __strncpy_user: * r3 - temp count * r4 - temp val */ + beqid r7,3f addik r3,r7,0 /* temp_count = len */ - beqi r3,3f 1: lbu r4,r6,r0 sb r4,r5,r0 @@ -76,8 +77,8 @@ __strncpy_user: .type __strnlen_user, @function .align 4; __strnlen_user: + beqid r6,3f addik r3,r6,0 - beqi r3,3f 1: lbu r4,r5,r0 beqid r4,2f /* break on NUL */ @@ -102,6 +103,49 @@ __strnlen_user: .section __ex_table,"a" .word 1b,4b +/* Loop unrolling for __copy_tofrom_user */ +#define COPY(offset) \ +1: lwi r4 , r6, 0x0000 + offset; \ +2: lwi r19, r6, 0x0004 + offset; \ +3: lwi r20, r6, 0x0008 + offset; \ +4: lwi r21, r6, 0x000C + offset; \ +5: lwi r22, r6, 0x0010 + offset; \ +6: lwi r23, r6, 0x0014 + offset; \ +7: lwi r24, r6, 0x0018 + offset; \ +8: lwi r25, r6, 0x001C + offset; \ +9: swi r4 , r5, 0x0000 + offset; \ +10: swi r19, r5, 0x0004 + offset; \ +11: swi r20, r5, 0x0008 + offset; \ +12: swi r21, r5, 0x000C + offset; \ +13: swi r22, r5, 0x0010 + offset; \ +14: swi r23, r5, 0x0014 + offset; \ +15: swi r24, r5, 0x0018 + offset; \ +16: swi r25, r5, 0x001C + offset; \ + .section __ex_table,"a"; \ + .word 1b, 0f; \ + .word 2b, 0f; \ + .word 3b, 0f; \ + .word 4b, 0f; \ + .word 5b, 0f; \ + .word 6b, 0f; \ + .word 7b, 0f; \ + .word 8b, 0f; \ + .word 9b, 0f; \ + .word 10b, 0f; \ + .word 11b, 0f; \ + .word 12b, 0f; \ + .word 13b, 0f; \ + .word 14b, 0f; \ + .word 15b, 0f; \ + .word 16b, 0f; \ + .text + +#define COPY_80(offset) \ + COPY(0x00 + offset);\ + COPY(0x20 + offset);\ + COPY(0x40 + offset);\ + COPY(0x60 + offset); + /* * int __copy_tofrom_user(char *to, char *from, int len) * Return: @@ -119,34 +163,79 @@ __copy_tofrom_user: * r7, r3 - count * r4 - tempval */ - beqid r7, 3f /* zero size is not likely */ - andi r3, r7, 0x3 /* filter add count */ - bneid r3, 4f /* if is odd value then byte copying */ + beqid r7, 0f /* zero size is not likely */ or r3, r5, r6 /* find if is any to/from unaligned */ - andi r3, r3, 0x3 /* mask unaligned */ - bneid r3, 1f /* it is unaligned -> then jump */ + or r3, r3, r7 /* find if count is unaligned */ + andi r3, r3, 0x3 /* mask last 3 bits */ + bneid r3, bu1 /* if r3 is not zero then byte copying */ + or r3, r0, r0 + + rsubi r3, r7, PAGE_SIZE /* detect PAGE_SIZE */ + beqid r3, page; or r3, r0, r0 -/* at least one 4 byte copy */ -5: lw r4, r6, r3 -6: sw r4, r5, r3 +w1: lw r4, r6, r3 /* at least one 4 byte copy */ +w2: sw r4, r5, r3 addik r7, r7, -4 - bneid r7, 5b + bneid r7, w1 addik r3, r3, 4 addik r3, r7, 0 rtsd r15, 8 nop -4: or r3, r0, r0 -1: lbu r4,r6,r3 -2: sb r4,r5,r3 + + .section __ex_table,"a" + .word w1, 0f; + .word w2, 0f; + .text + +.align 4 /* Alignment is important to keep icache happy */ +page: /* Create room on stack and save registers for storign values */ + addik r1, r1, -32 + swi r19, r1, 4 + swi r20, r1, 8 + swi r21, r1, 12 + swi r22, r1, 16 + swi r23, r1, 20 + swi r24, r1, 24 + swi r25, r1, 28 +loop: /* r4, r19, r20, r21, r22, r23, r24, r25 are used for storing values */ + /* Loop unrolling to get performance boost */ + COPY_80(0x000); + COPY_80(0x080); + COPY_80(0x100); + COPY_80(0x180); + /* copy loop */ + addik r6, r6, 0x200 + addik r7, r7, -0x200 + bneid r7, loop + addik r5, r5, 0x200 + /* Restore register content */ + lwi r19, r1, 4 + lwi r20, r1, 8 + lwi r21, r1, 12 + lwi r22, r1, 16 + lwi r23, r1, 20 + lwi r24, r1, 24 + lwi r25, r1, 28 + addik r1, r1, 32 + /* return back */ + addik r3, r7, 0 + rtsd r15, 8 + nop + +.align 4 /* Alignment is important to keep icache happy */ +bu1: lbu r4,r6,r3 +bu2: sb r4,r5,r3 addik r7,r7,-1 - bneid r7,1b + bneid r7,bu1 addik r3,r3,1 /* delay slot */ -3: +0: addik r3,r7,0 rtsd r15,8 nop .size __copy_tofrom_user, . - __copy_tofrom_user .section __ex_table,"a" - .word 1b,3b,2b,3b,5b,3b,6b,3b + .word bu1, 0b; + .word bu2, 0b; + .text diff --git a/arch/microblaze/lib/ucmpdi2.c b/arch/microblaze/lib/ucmpdi2.c new file mode 100644 index 0000000..63ca105 --- /dev/null +++ b/arch/microblaze/lib/ucmpdi2.c @@ -0,0 +1,20 @@ +#include <linux/module.h> + +#include "libgcc.h" + +word_type __ucmpdi2(unsigned long long a, unsigned long long b) +{ + const DWunion au = {.ll = a}; + const DWunion bu = {.ll = b}; + + if ((unsigned int) au.s.high < (unsigned int) bu.s.high) + return 0; + else if ((unsigned int) au.s.high > (unsigned int) bu.s.high) + return 2; + if ((unsigned int) au.s.low < (unsigned int) bu.s.low) + return 0; + else if ((unsigned int) au.s.low > (unsigned int) bu.s.low) + return 2; + return 1; +} +EXPORT_SYMBOL(__ucmpdi2); diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c index ae97d2c..31bb381 100644 --- a/arch/microblaze/mm/fault.c +++ b/arch/microblaze/mm/fault.c @@ -215,6 +215,8 @@ good_area: if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & VM_FAULT_OOM) goto out_of_memory; + else if (fault & VM_FAULT_SIGSEGV) + goto bad_area; else if (fault & VM_FAULT_SIGBUS) goto do_sigbus; BUG(); diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c index 213f2d6..565d193 100644 --- a/arch/microblaze/mm/init.c +++ b/arch/microblaze/mm/init.c @@ -17,6 +17,7 @@ #include <linux/pfn.h> #include <linux/slab.h> #include <linux/swap.h> +#include <linux/export.h> #include <asm/page.h> #include <asm/mmu_context.h> @@ -304,11 +305,11 @@ asmlinkage void __init mmu_init(void) /* Map in all of RAM starting at CONFIG_KERNEL_START */ mapin_ram(); -#ifdef HIGHMEM_START_BOOL - ioremap_base = HIGHMEM_START; +#ifdef CONFIG_HIGHMEM_START_BOOL + ioremap_base = CONFIG_HIGHMEM_START; #else ioremap_base = 0xfe000000UL; /* for now, could be 0xfffff000 */ -#endif /* CONFIG_HIGHMEM */ +#endif /* CONFIG_HIGHMEM_START_BOOL */ ioremap_bot = ioremap_base; /* Initialize the context management stuff */ diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile index 9889cc2..d1114fb 100644 --- a/arch/microblaze/pci/Makefile +++ b/arch/microblaze/pci/Makefile @@ -2,5 +2,5 @@ # Makefile # -obj-$(CONFIG_PCI) += pci_32.o pci-common.o indirect_pci.o iomap.o +obj-$(CONFIG_PCI) += pci-common.o indirect_pci.o iomap.o obj-$(CONFIG_PCI_XILINX) += xilinx_pci.o diff --git a/arch/microblaze/pci/iomap.c b/arch/microblaze/pci/iomap.c index 3fbf16f..57acda8 100644 --- a/arch/microblaze/pci/iomap.c +++ b/arch/microblaze/pci/iomap.c @@ -6,6 +6,7 @@ #include <linux/init.h> #include <linux/pci.h> #include <linux/mm.h> +#include <linux/export.h> #include <asm/io.h> #include <asm/pci-bridge.h> diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c index 5359906..db841c7 100644 --- a/arch/microblaze/pci/pci-common.c +++ b/arch/microblaze/pci/pci-common.c @@ -30,6 +30,7 @@ #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_pci.h> +#include <linux/export.h> #include <asm/processor.h> #include <asm/io.h> @@ -50,6 +51,11 @@ unsigned int pci_flags; static struct dma_map_ops *pci_dma_ops = &dma_direct_ops; +unsigned long isa_io_base; +unsigned long pci_dram_offset; +static int pci_bus_count; + + void set_pci_dma_ops(struct dma_map_ops *dma_ops) { pci_dma_ops = dma_ops; @@ -89,7 +95,7 @@ void pcibios_free_controller(struct pci_controller *phb) static resource_size_t pcibios_io_size(const struct pci_controller *hose) { - return hose->io_resource.end - hose->io_resource.start + 1; + return resource_size(&hose->io_resource); } int pcibios_vaddr_is_ioport(void __iomem *address) @@ -1558,6 +1564,112 @@ void __devinit pcibios_setup_phb_resources(struct pci_controller *hose) (unsigned long)hose->io_base_virt - _IO_BASE); } +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) +{ + struct pci_controller *hose = bus->sysdata; + + return of_node_get(hose->dn); +} + +static void __devinit pcibios_scan_phb(struct pci_controller *hose) +{ + struct pci_bus *bus; + struct device_node *node = hose->dn; + unsigned long io_offset; + struct resource *res = &hose->io_resource; + + pr_debug("PCI: Scanning PHB %s\n", + node ? node->full_name : "<NO NAME>"); + + /* Create an empty bus for the toplevel */ + bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose); + if (bus == NULL) { + printk(KERN_ERR "Failed to create bus for PCI domain %04x\n", + hose->global_number); + return; + } + bus->secondary = hose->first_busno; + hose->bus = bus; + + /* Fixup IO space offset */ + io_offset = (unsigned long)hose->io_base_virt - isa_io_base; + res->start = (res->start + io_offset) & 0xffffffffu; + res->end = (res->end + io_offset) & 0xffffffffu; + + /* Wire up PHB bus resources */ + pcibios_setup_phb_resources(hose); + + /* Scan children */ + hose->last_busno = bus->subordinate = pci_scan_child_bus(bus); +} + +static int __init pcibios_init(void) +{ + struct pci_controller *hose, *tmp; + int next_busno = 0; + + printk(KERN_INFO "PCI: Probing PCI hardware\n"); + + /* Scan all of the recorded PCI controllers. */ + list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { + hose->last_busno = 0xff; + pcibios_scan_phb(hose); + printk(KERN_INFO "calling pci_bus_add_devices()\n"); + pci_bus_add_devices(hose->bus); + if (next_busno <= hose->last_busno) + next_busno = hose->last_busno + 1; + } + pci_bus_count = next_busno; + + /* Call common code to handle resource allocation */ + pcibios_resource_survey(); + + return 0; +} + +subsys_initcall(pcibios_init); + +static struct pci_controller *pci_bus_to_hose(int bus) +{ + struct pci_controller *hose, *tmp; + + list_for_each_entry_safe(hose, tmp, &hose_list, list_node) + if (bus >= hose->first_busno && bus <= hose->last_busno) + return hose; + return NULL; +} + +/* Provide information on locations of various I/O regions in physical + * memory. Do this on a per-card basis so that we choose the right + * root bridge. + * Note that the returned IO or memory base is a physical address + */ + +long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn) +{ + struct pci_controller *hose; + long result = -EOPNOTSUPP; + + hose = pci_bus_to_hose(bus); + if (!hose) + return -ENODEV; + + switch (which) { + case IOBASE_BRIDGE_NUMBER: + return (long)hose->first_busno; + case IOBASE_MEMORY: + return (long)hose->pci_mem_offset; + case IOBASE_IO: + return (long)hose->io_base_phys; + case IOBASE_ISA_IO: + return (long)isa_io_base; + case IOBASE_ISA_MEM: + return (long)isa_mem_base; + } + + return result; +} + /* * Null PCI config access functions, for the case when we can't * find a hose. @@ -1626,3 +1738,4 @@ int early_find_capability(struct pci_controller *hose, int bus, int devfn, { return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap); } + diff --git a/arch/microblaze/pci/pci_32.c b/arch/microblaze/pci/pci_32.c deleted file mode 100644 index 92728a6..0000000 --- a/arch/microblaze/pci/pci_32.c +++ /dev/null @@ -1,432 +0,0 @@ -/* - * Common pmac/prep/chrp pci routines. -- Cort - */ - -#include <linux/kernel.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/capability.h> -#include <linux/sched.h> -#include <linux/errno.h> -#include <linux/bootmem.h> -#include <linux/irq.h> -#include <linux/list.h> -#include <linux/of.h> -#include <linux/slab.h> - -#include <asm/processor.h> -#include <asm/io.h> -#include <asm/prom.h> -#include <asm/sections.h> -#include <asm/pci-bridge.h> -#include <asm/byteorder.h> -#include <asm/uaccess.h> - -#undef DEBUG - -unsigned long isa_io_base; -unsigned long pci_dram_offset; -int pcibios_assign_bus_offset = 1; - -static u8 *pci_to_OF_bus_map; - -/* By default, we don't re-assign bus numbers. We do this only on - * some pmacs - */ -static int pci_assign_all_buses; - -static int pci_bus_count; - -/* - * Functions below are used on OpenFirmware machines. - */ -static void -make_one_node_map(struct device_node *node, u8 pci_bus) -{ - const int *bus_range; - int len; - - if (pci_bus >= pci_bus_count) - return; - bus_range = of_get_property(node, "bus-range", &len); - if (bus_range == NULL || len < 2 * sizeof(int)) { - printk(KERN_WARNING "Can't get bus-range for %s, " - "assuming it starts at 0\n", node->full_name); - pci_to_OF_bus_map[pci_bus] = 0; - } else - pci_to_OF_bus_map[pci_bus] = bus_range[0]; - - for_each_child_of_node(node, node) { - struct pci_dev *dev; - const unsigned int *class_code, *reg; - - class_code = of_get_property(node, "class-code", NULL); - if (!class_code || - ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI && - (*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS)) - continue; - reg = of_get_property(node, "reg", NULL); - if (!reg) - continue; - dev = pci_get_bus_and_slot(pci_bus, ((reg[0] >> 8) & 0xff)); - if (!dev || !dev->subordinate) { - pci_dev_put(dev); - continue; - } - make_one_node_map(node, dev->subordinate->number); - pci_dev_put(dev); - } -} - -void -pcibios_make_OF_bus_map(void) -{ - int i; - struct pci_controller *hose, *tmp; - struct property *map_prop; - struct device_node *dn; - - pci_to_OF_bus_map = kmalloc(pci_bus_count, GFP_KERNEL); - if (!pci_to_OF_bus_map) { - printk(KERN_ERR "Can't allocate OF bus map !\n"); - return; - } - - /* We fill the bus map with invalid values, that helps - * debugging. - */ - for (i = 0; i < pci_bus_count; i++) - pci_to_OF_bus_map[i] = 0xff; - - /* For each hose, we begin searching bridges */ - list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { - struct device_node *node = hose->dn; - - if (!node) - continue; - make_one_node_map(node, hose->first_busno); - } - dn = of_find_node_by_path("/"); - map_prop = of_find_property(dn, "pci-OF-bus-map", NULL); - if (map_prop) { - BUG_ON(pci_bus_count > map_prop->length); - memcpy(map_prop->value, pci_to_OF_bus_map, pci_bus_count); - } - of_node_put(dn); -#ifdef DEBUG - printk(KERN_INFO "PCI->OF bus map:\n"); - for (i = 0; i < pci_bus_count; i++) { - if (pci_to_OF_bus_map[i] == 0xff) - continue; - printk(KERN_INFO "%d -> %d\n", i, pci_to_OF_bus_map[i]); - } -#endif -} - -typedef int (*pci_OF_scan_iterator)(struct device_node *node, void *data); - -static struct device_node *scan_OF_pci_childs(struct device_node *parent, - pci_OF_scan_iterator filter, void *data) -{ - struct device_node *node; - struct device_node *sub_node; - - for_each_child_of_node(parent, node) { - const unsigned int *class_code; - - if (filter(node, data)) { - of_node_put(node); - return node; - } - - /* For PCI<->PCI bridges or CardBus bridges, we go down - * Note: some OFs create a parent node "multifunc-device" as - * a fake root for all functions of a multi-function device, - * we go down them as well. - */ - class_code = of_get_property(node, "class-code", NULL); - if ((!class_code || - ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI && - (*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS)) && - strcmp(node->name, "multifunc-device")) - continue; - sub_node = scan_OF_pci_childs(node, filter, data); - if (sub_node) { - of_node_put(node); - return sub_node; - } - } - return NULL; -} - -static struct device_node *scan_OF_for_pci_dev(struct device_node *parent, - unsigned int devfn) -{ - struct device_node *np, *cnp; - const u32 *reg; - unsigned int psize; - - for_each_child_of_node(parent, np) { - reg = of_get_property(np, "reg", &psize); - if (reg && psize >= 4 && ((reg[0] >> 8) & 0xff) == devfn) - return np; - - /* Note: some OFs create a parent node "multifunc-device" as - * a fake root for all functions of a multi-function device, - * we go down them as well. */ - if (!strcmp(np->name, "multifunc-device")) { - cnp = scan_OF_for_pci_dev(np, devfn); - if (cnp) - return cnp; - } - } - return NULL; -} - - -static struct device_node *scan_OF_for_pci_bus(struct pci_bus *bus) -{ - struct device_node *parent, *np; - - /* Are we a root bus ? */ - if (bus->self == NULL || bus->parent == NULL) { - struct pci_controller *hose = pci_bus_to_host(bus); - if (hose == NULL) - return NULL; - return of_node_get(hose->dn); - } - - /* not a root bus, we need to get our parent */ - parent = scan_OF_for_pci_bus(bus->parent); - if (parent == NULL) - return NULL; - - /* now iterate for children for a match */ - np = scan_OF_for_pci_dev(parent, bus->self->devfn); - of_node_put(parent); - - return np; -} - -/* - * Scans the OF tree for a device node matching a PCI device - */ -struct device_node * -pci_busdev_to_OF_node(struct pci_bus *bus, int devfn) -{ - struct device_node *parent, *np; - - pr_debug("pci_busdev_to_OF_node(%d,0x%x)\n", bus->number, devfn); - parent = scan_OF_for_pci_bus(bus); - if (parent == NULL) - return NULL; - pr_debug(" parent is %s\n", parent ? parent->full_name : "<NULL>"); - np = scan_OF_for_pci_dev(parent, devfn); - of_node_put(parent); - pr_debug(" result is %s\n", np ? np->full_name : "<NULL>"); - - /* XXX most callers don't release the returned node - * mostly because ppc64 doesn't increase the refcount, - * we need to fix that. - */ - return np; -} -EXPORT_SYMBOL(pci_busdev_to_OF_node); - -struct device_node* -pci_device_to_OF_node(struct pci_dev *dev) -{ - return pci_busdev_to_OF_node(dev->bus, dev->devfn); -} -EXPORT_SYMBOL(pci_device_to_OF_node); - -static int -find_OF_pci_device_filter(struct device_node *node, void *data) -{ - return ((void *)node == data); -} - -/* - * Returns the PCI device matching a given OF node - */ -int -pci_device_from_OF_node(struct device_node *node, u8 *bus, u8 *devfn) -{ - const unsigned int *reg; - struct pci_controller *hose; - struct pci_dev *dev = NULL; - - /* Make sure it's really a PCI device */ - hose = pci_find_hose_for_OF_device(node); - if (!hose || !hose->dn) - return -ENODEV; - if (!scan_OF_pci_childs(hose->dn, - find_OF_pci_device_filter, (void *)node)) - return -ENODEV; - reg = of_get_property(node, "reg", NULL); - if (!reg) - return -ENODEV; - *bus = (reg[0] >> 16) & 0xff; - *devfn = ((reg[0] >> 8) & 0xff); - - /* Ok, here we need some tweak. If we have already renumbered - * all busses, we can't rely on the OF bus number any more. - * the pci_to_OF_bus_map is not enough as several PCI busses - * may match the same OF bus number. - */ - if (!pci_to_OF_bus_map) - return 0; - - for_each_pci_dev(dev) - if (pci_to_OF_bus_map[dev->bus->number] == *bus && - dev->devfn == *devfn) { - *bus = dev->bus->number; - pci_dev_put(dev); - return 0; - } - - return -ENODEV; -} -EXPORT_SYMBOL(pci_device_from_OF_node); - -/* We create the "pci-OF-bus-map" property now so it appears in the - * /proc device tree - */ -void __init -pci_create_OF_bus_map(void) -{ - struct property *of_prop; - struct device_node *dn; - - of_prop = (struct property *) alloc_bootmem(sizeof(struct property) + \ - 256); - if (!of_prop) - return; - dn = of_find_node_by_path("/"); - if (dn) { - memset(of_prop, -1, sizeof(struct property) + 256); - of_prop->name = "pci-OF-bus-map"; - of_prop->length = 256; - of_prop->value = &of_prop[1]; - prom_add_property(dn, of_prop); - of_node_put(dn); - } -} - -static void __devinit pcibios_scan_phb(struct pci_controller *hose) -{ - struct pci_bus *bus; - struct device_node *node = hose->dn; - unsigned long io_offset; - struct resource *res = &hose->io_resource; - - pr_debug("PCI: Scanning PHB %s\n", - node ? node->full_name : "<NO NAME>"); - - /* Create an empty bus for the toplevel */ - bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose); - if (bus == NULL) { - printk(KERN_ERR "Failed to create bus for PCI domain %04x\n", - hose->global_number); - return; - } - bus.dev->of_node = of_node_get(node); - bus->secondary = hose->first_busno; - hose->bus = bus; - - /* Fixup IO space offset */ - io_offset = (unsigned long)hose->io_base_virt - isa_io_base; - res->start = (res->start + io_offset) & 0xffffffffu; - res->end = (res->end + io_offset) & 0xffffffffu; - - /* Wire up PHB bus resources */ - pcibios_setup_phb_resources(hose); - - /* Scan children */ - hose->last_busno = bus->subordinate = pci_scan_child_bus(bus); -} - -static int __init pcibios_init(void) -{ - struct pci_controller *hose, *tmp; - int next_busno = 0; - - printk(KERN_INFO "PCI: Probing PCI hardware\n"); - - if (pci_flags & PCI_REASSIGN_ALL_BUS) { - printk(KERN_INFO "setting pci_asign_all_busses\n"); - pci_assign_all_buses = 1; - } - - /* Scan all of the recorded PCI controllers. */ - list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { - if (pci_assign_all_buses) - hose->first_busno = next_busno; - hose->last_busno = 0xff; - pcibios_scan_phb(hose); - printk(KERN_INFO "calling pci_bus_add_devices()\n"); - pci_bus_add_devices(hose->bus); - if (pci_assign_all_buses || next_busno <= hose->last_busno) - next_busno = hose->last_busno + \ - pcibios_assign_bus_offset; - } - pci_bus_count = next_busno; - - /* OpenFirmware based machines need a map of OF bus - * numbers vs. kernel bus numbers since we may have to - * remap them. - */ - if (pci_assign_all_buses) - pcibios_make_OF_bus_map(); - - /* Call common code to handle resource allocation */ - pcibios_resource_survey(); - - return 0; -} - -subsys_initcall(pcibios_init); - -static struct pci_controller* -pci_bus_to_hose(int bus) -{ - struct pci_controller *hose, *tmp; - - list_for_each_entry_safe(hose, tmp, &hose_list, list_node) - if (bus >= hose->first_busno && bus <= hose->last_busno) - return hose; - return NULL; -} - -/* Provide information on locations of various I/O regions in physical - * memory. Do this on a per-card basis so that we choose the right - * root bridge. - * Note that the returned IO or memory base is a physical address - */ - -long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn) -{ - struct pci_controller *hose; - long result = -EOPNOTSUPP; - - hose = pci_bus_to_hose(bus); - if (!hose) - return -ENODEV; - - switch (which) { - case IOBASE_BRIDGE_NUMBER: - return (long)hose->first_busno; - case IOBASE_MEMORY: - return (long)hose->pci_mem_offset; - case IOBASE_IO: - return (long)hose->io_base_phys; - case IOBASE_ISA_IO: - return (long)isa_io_base; - case IOBASE_ISA_MEM: - return (long)isa_mem_base; - } - - return result; -} |