diff options
Diffstat (limited to 'arch/tile/include/asm')
| -rw-r--r-- | arch/tile/include/asm/compat.h | 2 | ||||
| -rw-r--r-- | arch/tile/include/asm/hardwall.h | 56 | ||||
| -rw-r--r-- | arch/tile/include/asm/processor.h | 17 |
3 files changed, 71 insertions, 4 deletions
diff --git a/arch/tile/include/asm/compat.h b/arch/tile/include/asm/compat.h index e133c53..b09292b 100644 --- a/arch/tile/include/asm/compat.h +++ b/arch/tile/include/asm/compat.h @@ -222,7 +222,7 @@ struct compat_shmid64_ds { static inline void __user *compat_ptr(compat_uptr_t uptr) { - return (void __user *)(unsigned long)uptr; + return (void __user *)(long)(s32)uptr; } static inline compat_uptr_t ptr_to_compat(void __user *uptr) diff --git a/arch/tile/include/asm/hardwall.h b/arch/tile/include/asm/hardwall.h new file mode 100644 index 0000000..0bed3ec --- /dev/null +++ b/arch/tile/include/asm/hardwall.h @@ -0,0 +1,56 @@ +/* + * Copyright 2010 Tilera Corporation. All Rights Reserved. + * + * 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, version 2. + * + * 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, GOOD TITLE or + * NON INFRINGEMENT. See the GNU General Public License for + * more details. + * + * Provide methods for the HARDWALL_FILE for accessing the UDN. + */ + +#ifndef _ASM_TILE_HARDWALL_H +#define _ASM_TILE_HARDWALL_H + +#include <linux/ioctl.h> + +#define HARDWALL_IOCTL_BASE 0xa2 + +/* + * The HARDWALL_CREATE() ioctl is a macro with a "size" argument. + * The resulting ioctl value is passed to the kernel in conjunction + * with a pointer to a little-endian bitmask of cpus, which must be + * physically in a rectangular configuration on the chip. + * The "size" is the number of bytes of cpu mask data. + */ +#define _HARDWALL_CREATE 1 +#define HARDWALL_CREATE(size) \ + _IOC(_IOC_READ, HARDWALL_IOCTL_BASE, _HARDWALL_CREATE, (size)) + +#define _HARDWALL_ACTIVATE 2 +#define HARDWALL_ACTIVATE \ + _IO(HARDWALL_IOCTL_BASE, _HARDWALL_ACTIVATE) + +#define _HARDWALL_DEACTIVATE 3 +#define HARDWALL_DEACTIVATE \ + _IO(HARDWALL_IOCTL_BASE, _HARDWALL_DEACTIVATE) + +#ifndef __KERNEL__ + +/* This is the canonical name expected by userspace. */ +#define HARDWALL_FILE "/dev/hardwall" + +#else + +/* Hook for /proc/tile/hardwall. */ +struct seq_file; +int proc_tile_hardwall_show(struct seq_file *sf, void *v); + +#endif + +#endif /* _ASM_TILE_HARDWALL_H */ diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h index 96c50d2..09584e2 100644 --- a/arch/tile/include/asm/processor.h +++ b/arch/tile/include/asm/processor.h @@ -21,6 +21,7 @@ * NOTE: we don't include <linux/ptrace.h> or <linux/percpu.h> as one * normally would, due to #include dependencies. */ +#include <linux/types.h> #include <asm/ptrace.h> #include <asm/percpu.h> @@ -29,7 +30,6 @@ struct task_struct; struct thread_struct; -struct list_head; typedef struct { unsigned long seg; @@ -74,6 +74,9 @@ struct async_tlb { unsigned long address; /* what address faulted? */ }; +#ifdef CONFIG_HARDWALL +struct hardwall_info; +#endif struct thread_struct { /* kernel stack pointer */ @@ -100,6 +103,12 @@ struct thread_struct { /* Any other miscellaneous processor state bits */ unsigned long proc_status; #endif +#ifdef CONFIG_HARDWALL + /* Is this task tied to an activated hardwall? */ + struct hardwall_info *hardwall; + /* Chains this task into the list at hardwall->list. */ + struct list_head hardwall_list; +#endif #if CHIP_HAS_TILE_DMA() /* Async DMA TLB fault information */ struct async_tlb dma_async_tlb; @@ -194,8 +203,6 @@ static inline void release_thread(struct task_struct *dead_task) extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); -/* Helper routines for setting home cache modes at exec() time. */ - /* * Return saved (kernel) PC of a blocked thread. @@ -240,6 +247,10 @@ struct siginfo; extern void arch_coredump_signal(struct siginfo *, struct pt_regs *); #define arch_coredump_signal arch_coredump_signal +/* Info on this processor (see fs/proc/cpuinfo.c) */ +struct seq_operations; +extern const struct seq_operations cpuinfo_op; + /* Provide information about the chip model. */ extern char chip_model[64]; |