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Commit e105d28a authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by Linus Torvalds
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[PATCH] s/390 patches for 2.5.20 (2 of 4). 

Second patch of the s/390 update. Contains all the include file changes in
include/asm-{s390,s390x}.
parent c1997c8d
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Showing with 6487 additions and 3088 deletions
include/asm-s390/atomic.h
View file @ e105d28a
......@@ -26,29 +26,17 @@ typedef struct { volatile int counter; } __attribute__ ((aligned (4))) atomic_t;
#define atomic_eieio() __asm__ __volatile__ ("BCR 15,0")
#define __CS_LOOP(old_val, new_val, ptr, op_val, op_string) \
__asm__ __volatile__(" l %0,0(%2)\n" \
__asm__ __volatile__(" l %0,0(%3)\n" \
"0: lr %1,%0\n" \
op_string " %1,%3\n" \
" cs %0,%1,0(%2)\n" \
op_string " %1,%4\n" \
" cs %0,%1,0(%3)\n" \
" jl 0b" \
: "=&d" (old_val), "=&d" (new_val) \
: "=&d" (old_val), "=&d" (new_val), \
"+m" (((atomic_t *)(ptr))->counter) \
: "a" (ptr), "d" (op_val) : "cc" );
static __inline__ int atomic_read(atomic_t *v)
{
int retval;
__asm__ __volatile__("bcr 15,0\n\t"
"l %0,%1"
: "=d" (retval) : "m" (*v) );
return retval;
}
static __inline__ void atomic_set(atomic_t *v, int i)
{
__asm__ __volatile__("st %1,%0\n\t"
"bcr 15,0"
: "=m" (*v) : "d" (i) );
}
#define atomic_read(v) ((v)->counter)
#define atomic_set(v,i) (((v)->counter) = (i))
static __inline__ void atomic_add(int i, atomic_t *v)
{
......@@ -138,14 +126,14 @@ atomic_compare_and_swap(int expected_oldval,int new_val,atomic_t *v)
int retval;
__asm__ __volatile__(
" lr 0,%2\n"
" cs 0,%3,0(%1)\n"
" lr %0,%3\n"
" cs %0,%4,0(%2)\n"
" ipm %0\n"
" srl %0,28\n"
"0:"
: "=&d" (retval)
: "=&d" (retval), "+m" (v->counter)
: "a" (v), "d" (expected_oldval) , "d" (new_val)
: "0", "cc");
: "cc" );
return retval;
}
......@@ -155,12 +143,14 @@ atomic_compare_and_swap(int expected_oldval,int new_val,atomic_t *v)
static __inline__ void
atomic_compare_and_swap_spin(int expected_oldval,int new_val,atomic_t *v)
{
unsigned long tmp;
__asm__ __volatile__(
"0: lr 0,%1\n"
" cs 0,%2,0(%0)\n"
"0: lr %1,%3\n"
" cs %1,%4,0(%2)\n"
" jl 0b\n"
: : "a" (v), "d" (expected_oldval) , "d" (new_val)
: "cc", "0" );
: "+m" (v->counter), "=&d" (tmp)
: "a" (v), "d" (expected_oldval) , "d" (new_val)
: "cc" );
}
#define atomic_compare_and_swap_debug(where,from,to) \
......
include/asm-s390/bitops.h
View file @ e105d28a
This diff is collapsed.
include/asm-s390/byteorder.h
View file @ e105d28a
......@@ -13,20 +13,6 @@
#ifdef __GNUC__
static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
{
__u32 temp;
__asm__ __volatile__ (
" st %0,0(%1)\n"
" icm %0,8,3(%1)\n"
" icm %0,4,2(%1)\n"
" icm %0,2,1(%1)\n"
" ic %0,0(%1)"
: "+&d" (x) : "a" (&temp) : "cc" );
return x;
}
static __inline__ __const__ __u32 ___arch__swab32p(__u32 *x)
{
__u32 result;
......@@ -40,27 +26,14 @@ static __inline__ __const__ __u32 ___arch__swab32p(__u32 *x)
return result;
}
static __inline__ void ___arch__swab32s(__u32 *x)
static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
{
__asm__ __volatile__ (
" icm 0,8,3(%0)\n"
" icm 0,4,2(%0)\n"
" icm 0,2,1(%0)\n"
" ic 0,0(%0)\n"
" st 0,0(%0)"
: : "a" (x) : "0", "memory", "cc");
return ___arch__swab32p(&x);
}
static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
static __inline__ void ___arch__swab32s(__u32 *x)
{
__u16 temp;
__asm__ __volatile__ (
" sth %0,0(%1)\n"
" icm %0,2,1(%1)\n"
" ic %0,0(%1)\n"
: "+&d" (x) : "a" (&temp) : "memory", "cc" );
return x;
*x = ___arch__swab32p(x);
}
static __inline__ __const__ __u16 ___arch__swab16p(__u16 *x)
......@@ -68,20 +41,20 @@ static __inline__ __const__ __u16 ___arch__swab16p(__u16 *x)
__u16 result;
__asm__ __volatile__ (
" sr %0,%0\n"
" icm %0,2,1(%1)\n"
" ic %0,0(%1)\n"
: "=&d" (result) : "a" (x) : "cc" );
return result;
}
static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
{
return ___arch__swab16p(&x);
}
static __inline__ void ___arch__swab16s(__u16 *x)
{
__asm__ __volatile__(
" icm 0,2,1(%0)\n"
" ic 0,0(%0)\n"
" sth 0,0(%0)"
: : "a" (x) : "0", "memory", "cc" );
*x = ___arch__swab16p(x);
}
#define __arch__swab32(x) ___arch__swab32(x)
......
include/asm-s390/cacheflush.h 0 → 100644
View file @ e105d28a
#ifndef _S390_CACHEFLUSH_H
#define _S390_CACHEFLUSH_H
/* Keep includes the same across arches. */
#include <linux/mm.h>
/* Caches aren't brain-dead on the s390. */
#define flush_cache_all() do { } while (0)
#define flush_cache_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr) do { } while (0)
#define flush_page_to_ram(page) do { } while (0)
#define flush_dcache_page(page) do { } while (0)
#define flush_icache_range(start, end) do { } while (0)
#define flush_icache_page(vma,pg) do { } while (0)
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
#endif /* _S390_CACHEFLUSH_H */
include/asm-s390/ccwcache.h deleted 100644 → 0
View file @ c1997c8d
/*
* File...........: linux/include/asm-s390/ccwcache.h
* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000
*/
#ifndef CCWCACHE_H
#define CCWCACHE_H
#include <linux/slab.h>
#include <asm/irq.h>
#ifndef __KERNEL__
#define kmem_cache_t void
#endif /* __KERNEL__ */
typedef struct ccw_req_t {
/* eye catcher plus queueing information */
unsigned int magic;
struct ccw_req_t *next; /* pointer to next ccw_req_t in queue */
struct ccw_req_t *int_next; /* for internal queueing */
struct ccw_req_t *int_prev; /* for internal queueing */
/* Where to execute what... */
void *device; /* index of the device the req is for */
void *req; /* pointer to originating request */
ccw1_t *cpaddr; /* address of channel program */
char status; /* reflecting the status of this request */
char flags; /* see below */
short retries; /* A retry counter to be set when filling */
/* ... and how */
int options; /* options for execution */
char lpm; /* logical path mask */
void *data; /* pointer to data area */
devstat_t *dstat; /* The device status in case of an error */
/* these are important for recovering erroneous requests */
struct ccw_req_t *refers; /* Does this request refer to another one? */
void *function; /* refers to the originating ERP action */ ;
unsigned long long expires; /* expiratioj period */
/* these are for profiling purposes */
unsigned long long buildclk; /* TOD-clock of request generation */
unsigned long long startclk; /* TOD-clock of request start */
unsigned long long stopclk; /* TOD-clock of request interrupt */
unsigned long long endclk; /* TOD-clock of request termination */
/* these are for internal use */
int cplength; /* length of the channel program in CCWs */
int datasize; /* amount of additional data in bytes */
kmem_cache_t *cache; /* the cache this data comes from */
} __attribute__ ((aligned(4))) ccw_req_t;
/*
* ccw_req_t -> status can be:
*/
#define CQR_STATUS_EMPTY 0x00 /* request is empty */
#define CQR_STATUS_FILLED 0x01 /* request is ready to be preocessed */
#define CQR_STATUS_QUEUED 0x02 /* request is queued to be processed */
#define CQR_STATUS_IN_IO 0x03 /* request is currently in IO */
#define CQR_STATUS_DONE 0x04 /* request is completed successfully */
#define CQR_STATUS_ERROR 0x05 /* request is completed with error */
#define CQR_STATUS_FAILED 0x06 /* request is finally failed */
#define CQR_STATUS_PENDING 0x07 /* request is waiting for interrupt - ERP only */
#define CQR_FLAGS_CHAINED 0x01 /* request is chained by another (last CCW is TIC) */
#ifdef __KERNEL__
#define SMALLEST_SLAB (sizeof(struct ccw_req_t) <= 128 ? 128 :\
sizeof(struct ccw_req_t) <= 256 ? 256 : 512 )
/* SMALLEST_SLAB(1),... PAGE_SIZE(CCW_NUMBER_CACHES) */
#define CCW_NUMBER_CACHES (sizeof(struct ccw_req_t) <= 128 ? 6 :\
sizeof(struct ccw_req_t) <= 256 ? 5 : 4 )
int ccwcache_init (void);
ccw_req_t *ccw_alloc_request (char *magic, int cplength, int additional_data);
void ccw_free_request (ccw_req_t * request);
#endif /* __KERNEL__ */
#endif /* CCWCACHE_H */
include/asm-s390/current.h
View file @ e105d28a
......@@ -13,16 +13,14 @@
#ifdef __KERNEL__
#include <asm/thread_info.h>
struct task_struct;
static inline struct task_struct * get_current(void)
{
struct task_struct *current;
__asm__("lhi %0,-8192\n\t"
"al %0,0xc40"
: "=&r" (current) : : "cc" );
return current;
}
return current_thread_info()->task;
}
#define current get_current()
......
include/asm-s390/dasd.h
View file @ e105d28a
......@@ -10,6 +10,10 @@
*
* History of changes (starts July 2000)
* 05/04/01 created by moving the kernel interface to drivers/s390/block/dasd_int.h
* 12/06/01 DASD_API_VERSION 2 - binary compatible to 0 (new BIODASDINFO2)
* 01/23/02 DASD_API_VERSION 3 - added BIODASDPSRD (and BIODASDENAPAV) IOCTL
* 02/15/02 DASD_API_VERSION 4 - added BIODASDSATTR IOCTL
*
*/
#ifndef DASD_H
......@@ -18,10 +22,125 @@
#define DASD_IOCTL_LETTER 'D'
#if (DASD_API_VERSION == 0)
#define DASD_API_VERSION 4
/*
* struct dasd_information2_t
* represents any data about the device, which is visible to userspace.
* including foramt and featueres.
*/
typedef struct dasd_information2_t {
unsigned int devno; /* S/390 devno */
unsigned int real_devno; /* for aliases */
unsigned int schid; /* S/390 subchannel identifier */
unsigned int cu_type : 16; /* from SenseID */
unsigned int cu_model : 8; /* from SenseID */
unsigned int dev_type : 16; /* from SenseID */
unsigned int dev_model : 8; /* from SenseID */
unsigned int open_count;
unsigned int req_queue_len;
unsigned int chanq_len; /* length of chanq */
char type[4]; /* from discipline.name, 'none' for unknown */
unsigned int status; /* current device level */
unsigned int label_block; /* where to find the VOLSER */
unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
unsigned int characteristics_size;
unsigned int confdata_size;
char characteristics[64]; /* from read_device_characteristics */
char configuration_data[256]; /* from read_configuration_data */
unsigned int format; /* format info like formatted/cdl/ldl/... */
unsigned int features; /* dasd features like 'ro',... */
unsigned int reserved0; /* reserved for further use ,... */
unsigned int reserved1; /* reserved for further use ,... */
unsigned int reserved2; /* reserved for further use ,... */
unsigned int reserved3; /* reserved for further use ,... */
unsigned int reserved4; /* reserved for further use ,... */
unsigned int reserved5; /* reserved for further use ,... */
unsigned int reserved6; /* reserved for further use ,... */
unsigned int reserved7; /* reserved for further use ,... */
} dasd_information2_t;
/*
* values to be used for dasd_information_t.format
* 0x00: NOT formatted
* 0x01: Linux disc layout
* 0x02: Common disc layout
*/
#define DASD_FORMAT_NONE 0
#define DASD_FORMAT_LDL 1
#define DASD_FORMAT_CDL 2
/*
* values to be used for dasd_information_t.features
* 0x00: default features
* 0x01: readonly (ro)
*/
#define DASD_FEATURE_DEFAULT 0
#define DASD_FEATURE_READONLY 1
#define DASD_PARTN_BITS 2
/*
* struct dasd_information_t
* represents any data about the data, which is visible to userspace
*/
typedef struct dasd_information_t {
unsigned int devno; /* S/390 devno */
unsigned int real_devno; /* for aliases */
unsigned int schid; /* S/390 subchannel identifier */
unsigned int cu_type : 16; /* from SenseID */
unsigned int cu_model : 8; /* from SenseID */
unsigned int dev_type : 16; /* from SenseID */
unsigned int dev_model : 8; /* from SenseID */
unsigned int open_count;
unsigned int req_queue_len;
unsigned int chanq_len; /* length of chanq */
char type[4]; /* from discipline.name, 'none' for unknown */
unsigned int status; /* current device level */
unsigned int label_block; /* where to find the VOLSER */
unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
unsigned int characteristics_size;
unsigned int confdata_size;
char characteristics[64]; /* from read_device_characteristics */
char configuration_data[256]; /* from read_configuration_data */
} dasd_information_t;
/*
* Read Subsystem Data - Perfomance Statistics
*/
typedef struct dasd_rssd_perf_stats_t {
unsigned char invalid:1;
unsigned char format:3;
unsigned char data_format:4;
unsigned char unit_address;
unsigned short device_status;
unsigned int nr_read_normal;
unsigned int nr_read_normal_hits;
unsigned int nr_write_normal;
unsigned int nr_write_fast_normal_hits;
unsigned int nr_read_seq;
unsigned int nr_read_seq_hits;
unsigned int nr_write_seq;
unsigned int nr_write_fast_seq_hits;
unsigned int nr_read_cache;
unsigned int nr_read_cache_hits;
unsigned int nr_write_cache;
unsigned int nr_write_fast_cache_hits;
unsigned int nr_inhibit_cache;
unsigned int nr_bybass_cache;
unsigned int nr_seq_dasd_to_cache;
unsigned int nr_dasd_to_cache;
unsigned int nr_cache_to_dasd;
unsigned int nr_delayed_fast_write;
unsigned int nr_normal_fast_write;
unsigned int nr_seq_fast_write;
unsigned int nr_cache_miss;
unsigned char status2;
unsigned int nr_quick_write_promotes;
unsigned char reserved;
unsigned short ssid;
unsigned char reseved2[96];
} __attribute__((packed)) dasd_rssd_perf_stats_t;
/*
* struct profile_info_t
* holds the profinling information
......@@ -62,30 +181,36 @@ typedef struct format_data_t {
#define DASD_FMT_INT_INVAL 4 /* invalidate tracks */
#define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */
/*
* struct dasd_information_t
* represents any data about the data, which is visible to userspace
* struct attrib_data_t
* represents the operation (cache) bits for the device.
* Used in DE to influence caching of the DASD.
*/
typedef struct dasd_information_t {
unsigned int devno; /* S/390 devno */
unsigned int real_devno; /* for aliases */
unsigned int schid; /* S/390 subchannel identifier */
unsigned int cu_type : 16; /* from SenseID */
unsigned int cu_model : 8; /* from SenseID */
unsigned int dev_type : 16; /* from SenseID */
unsigned int dev_model : 8; /* from SenseID */
unsigned int open_count;
unsigned int req_queue_len;
unsigned int chanq_len;
char type[4]; /* from discipline.name, 'none' for unknown */
unsigned int status; /* current device level */
unsigned int label_block; /* where to find the VOLSER */
unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
unsigned int characteristics_size;
unsigned int confdata_size;
char characteristics[64]; /* from read_device_characteristics */
char configuration_data[256]; /* from read_configuration_data */
} dasd_information_t;
typedef struct attrib_data_t {
unsigned char operation:3; /* cache operation mode */
unsigned char reserved:5; /* cache operation mode */
__u16 nr_cyl; /* no of cyliners for read ahaed */
__u8 reserved2[29]; /* for future use */
} __attribute__ ((packed)) attrib_data_t;
/* definition of operation (cache) bits within attributes of DE */
#define DASD_NORMAL_CACHE 0x0
#define DASD_BYPASS_CACHE 0x1
#define DASD_INHIBIT_LOAD 0x2
#define DASD_SEQ_ACCESS 0x3
#define DASD_SEQ_PRESTAGE 0x4
#define DASD_REC_ACCESS 0x5
/********************************************************************************
* SECTION: Definition of IOCTLs
*
* Here ist how the ioctl-nr should be used:
* 0 - 31 DASD driver itself
* 32 - 239 still open
* 240 - 255 reserved for EMC
*******************************************************************************/
/* Disable the volume (for Linux) */
#define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0)
......@@ -97,15 +222,28 @@ typedef struct dasd_information_t {
#define BIODASDSLCK _IO(DASD_IOCTL_LETTER,4) /* steal lock */
/* reset profiling information of a device */
#define BIODASDPRRST _IO(DASD_IOCTL_LETTER,5)
/* enable PAV */
#define BIODASDENAPAV _IO(DASD_IOCTL_LETTER,6)
/* retrieve API version number */
#define DASDAPIVER _IOR(DASD_IOCTL_LETTER,0,int)
/* Get information on a dasd device */
#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
/* retrieve profiling information of a device */
#define BIODASDPRRD _IOR(DASD_IOCTL_LETTER,2,dasd_profile_info_t)
/* Get information on a dasd device (enhanced) */
#define BIODASDINFO2 _IOR(DASD_IOCTL_LETTER,3,dasd_information2_t)
/* Performance Statistics Read */
#define BIODASDPSRD _IOR(DASD_IOCTL_LETTER,4,dasd_rssd_perf_stats_t)
/* #define BIODASDFORMAT _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */
#define BIODASDFMT _IOW(DASD_IOCTL_LETTER,1,format_data_t)
#endif /* DASD_API_VERSION */
/* Set Attributes (cache operations) */
#define BIODASDSATTR _IOW(DASD_IOCTL_LETTER,2,attrib_data_t)
#endif /* DASD_H */
/*
......
include/asm-s390/debug.h
View file @ e105d28a
......@@ -54,7 +54,7 @@ struct __debug_entry{
#define DEBUG_DATA(entry) (char*)(entry + 1) /* data is stored behind */
/* the entry information */
#define STCK(x) asm volatile ("STCK %0" : "=m" (x) : : "cc" )
#define STCK(x) asm volatile ("STCK 0(%1)" : "=m" (x) : "a" (&(x)) : "cc")
typedef struct __debug_entry debug_entry_t;
......
include/asm-s390/ebcdic.h
View file @ e105d28a
......@@ -24,7 +24,7 @@ extern __u8 _ebc_toupper[]; /* EBCDIC -> uppercase */
extern __inline__
void codepage_convert(const __u8 *codepage, volatile __u8 * addr, int nr)
{
if (nr <= 0)
if (nr-- <= 0)
return;
__asm__ __volatile__(
" bras 1,1f\n"
......@@ -34,7 +34,7 @@ void codepage_convert(const __u8 *codepage, volatile __u8 * addr, int nr)
"1: ahi %1,-256\n"
" jp 0b\n"
" ex %1,0(1)"
: "+&a" (addr), "+&a" (nr-1)
: "+&a" (addr), "+&a" (nr)
: "a" (codepage) : "cc", "memory", "1" );
}
......
include/asm-s390/fsf.h 0 → 100644
View file @ e105d28a
This diff is collapsed.
include/asm-s390/hardirq.h
View file @ e105d28a
......@@ -16,6 +16,7 @@
#include <linux/threads.h>
#include <asm/lowcore.h>
#include <linux/sched.h>
#include <linux/cache.h>
/* entry.S is sensitive to the offsets of these fields */
typedef struct {
......
include/asm-s390/idals.h
View file @ e105d28a
/*
* File...........: linux/include/asm-s390x/idals.h
* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000a
* History of changes
* 07/24/00 new file
* 05/04/02 code restructuring.
*/
#ifndef _S390_IDALS_H
#define _S390_IDALS_H
#include <linux/config.h>
#include <linux/errno.h>
#include <asm/irq.h>
#define IDA_SIZE_LOG 12 /* 11 for 2k , 12 for 4k */
#define IDA_SIZE_LOG 11 /* 11 for 2k , 12 for 4k */
#define IDA_BLOCK_SIZE (1L<<IDA_SIZE_LOG)
static inline addr_t *
idal_alloc ( int nridaws )
/*
* Test if an address/length pair needs an idal list.
*/
static inline int
idal_is_needed(void *vaddr, unsigned int length)
{
if ( nridaws > 33 )
BUG();
return kmalloc(nridaws * sizeof(addr_t), GFP_ATOMIC | GFP_DMA );
#if defined(CONFIG_ARCH_S390X)
return ((__pa(vaddr) + length) >> 31) != 0;
#else
return 0;
#endif
}
static inline void
idal_free ( addr_t *idal )
/*
* Return the number of idal words needed for an address/length pair.
*/
static inline unsigned int
idal_nr_words(void *vaddr, unsigned int length)
{
kfree (idal);
#if defined(CONFIG_ARCH_S390X)
if (idal_is_needed(vaddr, length))
return ((__pa(vaddr) & (IDA_BLOCK_SIZE-1)) + length +
(IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG;
#endif
return 0;
}
/*
* Create the list of idal words for an address/length pair.
*/
static inline unsigned long *
idal_create_words(unsigned long *idaws, void *vaddr, unsigned int length)
{
#if defined(CONFIG_ARCH_S390X)
extern unsigned long __create_idal(unsigned long address, int count);
unsigned long paddr;
unsigned int cidaw;
paddr = __pa(vaddr);
cidaw = ((paddr & (IDA_BLOCK_SIZE-1)) + length +
(IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG;
*idaws++ = paddr;
paddr &= -IDA_BLOCK_SIZE;
while (--cidaw > 0) {
paddr += IDA_BLOCK_SIZE;
*idaws++ = paddr;
}
#endif
return idaws;
}
/*
* Function: set_normalized_cda
* sets the address of the data in CCW
* if necessary it allocates an IDAL and sets sthe appropriate flags
* Sets the address of the data in CCW.
* If necessary it allocates an IDAL and sets the appropriate flags.
*/
static inline int
set_normalized_cda(ccw1_t * ccw, unsigned long address)
set_normalized_cda(ccw1_t * ccw, void *vaddr)
{
int ret = 0;
#if defined (CONFIG_ARCH_S390X)
if (((address + ccw->count) >> 31) != 0) {
unsigned int nridaws;
unsigned long *idal;
if (ccw->flags & CCW_FLAG_IDA)
BUG();
address = __create_idal(address, ccw->count);
if (address)
return -EINVAL;
nridaws = idal_nr_words(vaddr, ccw->count);
if (nridaws > 0) {
idal = kmalloc(nridaws * sizeof(unsigned long),
GFP_ATOMIC | GFP_DMA );
if (idal == NULL)
return -ENOMEM;
idal_create_words(idal, vaddr, ccw->count);
ccw->flags |= CCW_FLAG_IDA;
else
ret = -ENOMEM;
vaddr = idal;
}
#endif
ccw->cda = (__u32) address;
return ret;
ccw->cda = (__u32)(unsigned long) vaddr;
return 0;
}
/*
* Function: clear_normalized_cda
* releases any allocated IDAL related to the CCW
* Releases any allocated IDAL related to the CCW.
*/
static inline void
clear_normalized_cda ( ccw1_t * ccw )
clear_normalized_cda(ccw1_t * ccw)
{
#if defined(CONFIG_ARCH_S390X)
if ( ccw -> flags & CCW_FLAG_IDA ) {
idal_free ( (addr_t *)(unsigned long) (ccw -> cda ));
ccw -> flags &= ~CCW_FLAG_IDA;
if (ccw->flags & CCW_FLAG_IDA) {
kfree((void *)(unsigned long) ccw->cda);
ccw->flags &= ~CCW_FLAG_IDA;
}
#endif
ccw -> cda = 0;
ccw->cda = 0;
}
#endif
include/asm-s390/init.h
View file @ e105d28a
......@@ -4,26 +4,4 @@
* S390 version
*/
#ifndef _S390_INIT_H
#define _S390_INIT_H
#define __init __attribute__ ((constructor))
/* don't know, if need on S390 */
#define __initdata
#define __initfunc(__arginit) \
__arginit __init; \
__arginit
/* For assembly routines
* need to define ?
*/
/*
#define __INIT .section ".text.init",#alloc,#execinstr
#define __FINIT .previous
#define __INITDATA .section ".data.init",#alloc,#write
*/
#define __cacheline_aligned __attribute__ ((__aligned__(256)))
#endif
#error "<asm/init.h> should never be used - use <linux/init.h> instead"
include/asm-s390/io.h
View file @ e105d28a
......@@ -40,6 +40,11 @@ extern inline void * phys_to_virt(unsigned long address)
return __io_virt(address);
}
/*
* Change "struct page" to physical address.
*/
#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
extern inline void * ioremap (unsigned long offset, unsigned long size)
......
include/asm-s390/irq.h
View file @ e105d28a
......@@ -10,14 +10,12 @@
*/
#define __MAX_SUBCHANNELS 65536
#define NR_IRQS __MAX_SUBCHANNELS
#define NR_CHPIDS 256
#define LPM_ANYPATH 0xff /* doesn't really belong here, Ingo? */
#define INVALID_STORAGE_AREA ((void *)(-1 - 0x3FFF ))
extern int disable_irq(unsigned int);
extern int enable_irq(unsigned int);
/*
* path management control word
*/
......@@ -362,6 +360,92 @@ typedef struct {
/* extended part */
ciw_t ciw[MAX_CIWS]; /* variable # of CIWs */
} __attribute__ ((packed,aligned(4))) senseid_t;
/*
* where we put the ssd info
*/
typedef struct _ssd_info {
__u8 valid:1;
__u8 type:7; /* subchannel type */
__u8 chpid[8]; /* chpids */
__u16 fla[8]; /* full link addresses */
} __attribute__ ((packed)) ssd_info_t;
/*
* area for store event information
*/
typedef struct chsc_area_t {
struct {
/* word 0 */
__u16 command_code1;
__u16 command_code2;
union {
struct {
/* word 1 */
__u32 reserved1;
/* word 2 */
__u32 reserved2;
} __attribute__ ((packed,aligned(8))) sei_req;
struct {
/* word 1 */
__u16 reserved1;
__u16 f_sch; /* first subchannel */
/* word 2 */
__u16 reserved2;
__u16 l_sch; /* last subchannel */
} __attribute__ ((packed,aligned(8))) ssd_req;
} request_block_data;
/* word 3 */
__u32 reserved3;
} __attribute__ ((packed,aligned(8))) request_block;
struct {
/* word 0 */
__u16 length;
__u16 response_code;
/* word 1 */
__u32 reserved1;
union {
struct {
/* word 2 */
__u8 flags;
__u8 vf; /* validity flags */
__u8 rs; /* reporting source */
__u8 cc; /* content code */
/* word 3 */
__u16 fla; /* full link address */
__u16 rsid; /* reporting source id */
/* word 4 */
__u32 reserved2;
/* word 5 */
__u32 reserved3;
/* word 6 */
__u32 ccdf; /* content-code dependent field */
/* word 7 */
__u32 reserved4;
/* word 8 */
__u32 reserved5;
/* word 9 */
__u32 reserved6;
} __attribute__ ((packed,aligned(8))) sei_res;
struct {
/* word 2 */
__u8 sch_valid : 1;
__u8 dev_valid : 1;
__u8 st : 3; /* subchannel type */
__u8 zeroes : 3;
__u8 unit_addr; /* unit address */
__u16 devno; /* device number */
/* word 3 */
__u8 path_mask;
__u8 fla_valid_mask;
__u16 sch; /* subchannel */
/* words 4-5 */
__u8 chpid[8]; /* chpids 0-7 */
/* words 6-9 */
__u16 fla[8]; /* full link addresses 0-7 */
} __attribute__ ((packed,aligned(8))) ssd_res;
} response_block_data;
} __attribute__ ((packed,aligned(8))) response_block;
} __attribute__ ((packed,aligned(PAGE_SIZE))) chsc_area_t;
#endif /* __KERNEL__ */
/*
......@@ -491,6 +575,7 @@ typedef struct {
/* ... for suspended CCWs */
#define DOIO_TIMEOUT 0x0080 /* 3 secs. timeout for sync. I/O */
#define DOIO_DONT_CALL_INTHDLR 0x0100 /* don't call interrupt handler */
#define DOIO_CANCEL_ON_TIMEOUT 0x0200 /* cancel I/O if it timed out */
/*
* do_IO()
......@@ -513,11 +598,6 @@ int do_IO( int irq, /* IRQ aka. subchannel number */
__u8 lpm, /* logical path mask */
unsigned long flag); /* flags : see above */
int start_IO( int irq, /* IRQ aka. subchannel number */
ccw1_t *cpa, /* logical channel program address */
unsigned long intparm, /* interruption parameter */
__u8 lpm, /* logical path mask */
unsigned int flag); /* flags : see above */
void do_crw_pending( void ); /* CRW handler */
......@@ -531,14 +611,6 @@ int clear_IO( int irq, /* IRQ aka. subchannel number */
unsigned long intparm, /* dummy intparm */
unsigned long flag); /* possible DOIO_WAIT_FOR_INTERRUPT */
int process_IRQ( struct pt_regs regs,
unsigned int irq,
unsigned int intparm);
int enable_cpu_sync_isc ( int irq );
int disable_cpu_sync_isc( int irq );
typedef struct {
int irq; /* irq, aka. subchannel */
__u16 devno; /* device number */
......@@ -546,8 +618,6 @@ typedef struct {
senseid_t sid_data; /* senseID data */
} s390_dev_info_t;
int get_dev_info( int irq, s390_dev_info_t *); /* to be eliminated - don't use */
int get_dev_info_by_irq ( int irq, s390_dev_info_t *pdi);
int get_dev_info_by_devno( __u16 devno, s390_dev_info_t *pdi);
......@@ -560,8 +630,6 @@ int get_irq_next ( int irq );
int read_dev_chars( int irq, void **buffer, int length );
int read_conf_data( int irq, void **buffer, int *length, __u8 lpm );
int s390_DevicePathVerification( int irq, __u8 domask );
int s390_request_irq_special( int irq,
io_handler_func_t io_handler,
not_oper_handler_func_t not_oper_handler,
......@@ -570,7 +638,6 @@ int s390_request_irq_special( int irq,
void *dev_id);
extern int set_cons_dev(int irq);
extern int reset_cons_dev(int irq);
extern int wait_cons_dev(int irq);
extern schib_t *s390_get_schib( int irq );
......@@ -630,11 +697,6 @@ extern __inline__ int msch_err(int irq, volatile schib_t *addr)
" .align 8\n"
" .quad 0b,2b\n"
".previous"
" lr 1,%1\n"
" msch 0(%2)\n"
"0: ipm %0\n"
" srl %0,28\n"
"1:\n"
#else
".section .fixup,\"ax\"\n"
"2: l %0,%3\n"
......@@ -743,6 +805,21 @@ extern __inline__ int hsch(int irq)
return ccode;
}
extern __inline__ int xsch(int irq)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" .insn rre,0xb2760000,%1,0\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (irq | 0x10000L)
: "cc", "1" );
return ccode;
}
extern __inline__ int iac( void)
{
int ccode;
......@@ -805,6 +882,20 @@ extern __inline__ int diag210( diag210_t * addr)
: "cc" );
return ccode;
}
extern __inline__ int chsc( chsc_area_t * chsc_area)
{
int cc;
__asm__ __volatile__ (
".insn rre,0xb25f0000,%1,0 \n\t"
"ipm %0 \n\t"
"srl %0,28 \n\t"
: "=d" (cc)
: "d" (chsc_area)
: "cc" );
return cc;
}
/*
* Various low-level irq details needed by irq.c, process.c,
......@@ -813,13 +904,6 @@ extern __inline__ int diag210( diag210_t * addr)
* Interrupt entry/exit code at both C and assembly level
*/
void mask_irq(unsigned int irq);
void unmask_irq(unsigned int irq);
#define MAX_IRQ_SOURCES 128
extern spinlock_t irq_controller_lock;
#ifdef CONFIG_SMP
#include <asm/atomic.h>
......@@ -849,17 +933,10 @@ static inline void irq_exit(int cpu, unsigned int irq)
#define __STR(x) #x
#define STR(x) __STR(x)
#ifdef CONFIG_SMP
/*
* SMP has a few special interrupts for IPI messages
*/
#endif /* CONFIG_SMP */
/*
* x86 profiling function, SMP safe. We might want to do this in
* assembly totally?
* is this ever used anyway?
*/
extern char _stext;
static inline void s390_do_profile (unsigned long addr)
......@@ -883,16 +960,19 @@ static inline void s390_do_profile (unsigned long addr)
#include <asm/s390io.h>
#define get_irq_lock(irq) &ioinfo[irq]->irq_lock
#define s390irq_spin_lock(irq) \
spin_lock(&(ioinfo[irq]->irq_lock))
spin_lock(get_irq_lock(irq))
#define s390irq_spin_unlock(irq) \
spin_unlock(&(ioinfo[irq]->irq_lock))
spin_unlock(get_irq_lock(irq))
#define s390irq_spin_lock_irqsave(irq,flags) \
spin_lock_irqsave(&(ioinfo[irq]->irq_lock), flags)
spin_lock_irqsave(get_irq_lock(irq), flags)
#define s390irq_spin_unlock_irqrestore(irq,flags) \
spin_unlock_irqrestore(&(ioinfo[irq]->irq_lock), flags)
spin_unlock_irqrestore(get_irq_lock(irq), flags)
#define touch_nmi_watchdog() do { } while(0)
......
include/asm-s390/lowcore.h
View file @ e105d28a
......@@ -45,6 +45,9 @@
#define __LC_CPUID 0xC60
#define __LC_CPUADDR 0xC68
#define __LC_IPLDEV 0xC7C
#define __LC_JIFFY_TIMER 0xC80
#define __LC_PANIC_MAGIC 0xE00
#define __LC_PFAULT_INTPARM 0x080
......@@ -161,7 +164,7 @@ struct _lowcore
/* entry.S sensitive area end */
/* SMP info area: defined by DJB */
__u64 jiffy_timer_cc; /* 0xc80 */
__u64 jiffy_timer; /* 0xc80 */
atomic_t ext_call_fast; /* 0xc88 */
__u8 pad11[0xe00-0xc8c]; /* 0xc8c */
......@@ -182,12 +185,12 @@ extern __inline__ void set_prefix(__u32 address)
extern struct _lowcore *lowcore_ptr[];
#ifndef CONFIG_SMP
#define get_cpu_lowcore(cpu) S390_lowcore
#define safe_get_cpu_lowcore(cpu) S390_lowcore
#define get_cpu_lowcore(cpu) (&S390_lowcore)
#define safe_get_cpu_lowcore(cpu) (&S390_lowcore)
#else
#define get_cpu_lowcore(cpu) (*lowcore_ptr[cpu])
#define get_cpu_lowcore(cpu) (lowcore_ptr[(cpu)])
#define safe_get_cpu_lowcore(cpu) \
((cpu)==smp_processor_id() ? S390_lowcore:(*lowcore_ptr[(cpu)]))
((cpu) == smp_processor_id() ? &S390_lowcore : lowcore_ptr[(cpu)])
#endif
#endif /* __ASSEMBLY__ */
......
include/asm-s390/mman.h
View file @ e105d28a
......@@ -12,6 +12,7 @@
#define PROT_READ 0x1 /* page can be read */
#define PROT_WRITE 0x2 /* page can be written */
#define PROT_EXEC 0x4 /* page can be executed */
#define PROT_SEM 0x8 /* page may be used for atomic ops */
#define PROT_NONE 0x0 /* page can not be accessed */
#define MAP_SHARED 0x01 /* Share changes */
......
include/asm-s390/page.h
View file @ e105d28a
......@@ -59,8 +59,8 @@ static inline void copy_page(void *to, void *from)
: "memory" );
}
#define clear_user_page(page, vaddr) clear_page(page)
#define copy_user_page(to, from, vaddr) copy_page(to, from)
#define clear_user_page(page, vaddr, pg) clear_page(page)
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
#define BUG() do { \
printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
......@@ -116,9 +116,13 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#define __PAGE_OFFSET 0x0UL
#define PAGE_OFFSET 0x0UL
#define __pa(x) (unsigned long)(x)
#define __va(x) (void *)(x)
#define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT))
#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
#define __va(x) (void *)(unsigned long)(x)
#define pfn_to_page(pfn) (mem_map + (pfn))
#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
......
include/asm-s390/pci.h
View file @ e105d28a
......@@ -4,6 +4,7 @@
/* S/390 systems don't have a PCI bus. This file is just here because some stupid .c code
* includes it even if CONFIG_PCI is not set.
*/
#define PCI_DMA_BUS_IS_PHYS (1)
#endif /* __ASM_S390_PCI_H */
include/asm-s390/percpu.h 0 → 100644
View file @ e105d28a
#ifndef __ARCH_S390_PERCPU__
#define __ARCH_S390_PERCPU__
#include <asm-generic/percpu.h>
#endif /* __ARCH_S390_PERCPU__ */
include/asm-s390/pgalloc.h
View file @ e105d28a
......@@ -17,10 +17,7 @@
#include <asm/processor.h>
#include <linux/threads.h>
#define pgd_quicklist (S390_lowcore.cpu_data.pgd_quick)
#define pmd_quicklist ((unsigned long *)0)
#define pte_quicklist (S390_lowcore.cpu_data.pte_quick)
#define pgtable_cache_size (S390_lowcore.cpu_data.pgtable_cache_sz)
#define check_pgt_cache() do {} while (0)
/*
* Allocate and free page tables. The xxx_kernel() versions are
......@@ -28,67 +25,35 @@
* if any.
*/
extern __inline__ pgd_t* get_pgd_slow(void)
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *ret;
pgd_t *pgd;
int i;
ret = (pgd_t *) __get_free_pages(GFP_KERNEL,1);
if (ret != NULL)
pgd = (pgd_t *) __get_free_pages(GFP_KERNEL,1);
if (pgd != NULL)
for (i = 0; i < USER_PTRS_PER_PGD; i++)
pmd_clear(pmd_offset(ret + i, i*PGDIR_SIZE));
return ret;
}
extern __inline__ pgd_t* get_pgd_fast(void)
{
unsigned long *ret = pgd_quicklist;
if (ret != NULL) {
pgd_quicklist = (unsigned long *)(*ret);
ret[0] = ret[1];
pgtable_cache_size -= 2;
}
return (pgd_t *)ret;
}
extern __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *pgd;
pgd = get_pgd_fast();
if (!pgd)
pgd = get_pgd_slow();
pmd_clear(pmd_offset(pgd + i, i*PGDIR_SIZE));
return pgd;
}
extern __inline__ void free_pgd_fast(pgd_t *pgd)
{
*(unsigned long *)pgd = (unsigned long) pgd_quicklist;
pgd_quicklist = (unsigned long *) pgd;
pgtable_cache_size += 2;
}
extern __inline__ void free_pgd_slow(pgd_t *pgd)
static inline void pgd_free(pgd_t *pgd)
{
free_pages((unsigned long) pgd, 1);
}
#define pgd_free(pgd) free_pgd_fast(pgd)
/*
* page middle directory allocation/free routines.
* We don't use pmd cache, so these are dummy routines. This
* code never triggers because the pgd will always be present.
*/
#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })
#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x) do { } while (0)
#define pmd_free_slow(x) do { } while (0)
#define pmd_free_fast(x) do { } while (0)
#define pmd_free_tlb(tlb,x) do { } while (0)
#define pgd_populate(mm, pmd, pte) BUG()
extern inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
{
pmd_val(pmd[0]) = _PAGE_TABLE + __pa(pte);
pmd_val(pmd[1]) = _PAGE_TABLE + __pa(pte+256);
......@@ -96,50 +61,53 @@ extern inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
pmd_val(pmd[3]) = _PAGE_TABLE + __pa(pte+768);
}
static inline void
pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
{
pmd_populate_kernel(mm, pmd, (pte_t *)((page-mem_map) << PAGE_SHIFT));
}
/*
* page table entry allocation/free routines.
*/
extern inline pte_t * pte_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
static inline pte_t *
pte_alloc_one_kernel(struct mm_struct *mm, unsigned long vmaddr)
{
pte_t *pte;
int count;
int i;
count = 0;
do {
pte = (pte_t *) __get_free_page(GFP_KERNEL);
if (pte != NULL) {
for (i=0; i < PTRS_PER_PTE; i++)
pte_clear(pte+i);
} else {
current->state = TASK_UNINTERRUPTIBLE;
schedule_timeout(HZ);
}
} while (!pte && (count++ < 10));
return pte;
}
extern __inline__ pte_t *
pte_alloc_one_fast(struct mm_struct *mm, unsigned long address)
static inline struct page *
pte_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
unsigned long *ret = (unsigned long *) pte_quicklist;
if (ret != NULL) {
pte_quicklist = (unsigned long *)(*ret);
ret[0] = ret[1];
pgtable_cache_size--;
}
return (pte_t *)ret;
return virt_to_page(pte_alloc_one_kernel(mm, vmaddr));
}
extern __inline__ void pte_free_fast(pte_t *pte)
static inline void pte_free_kernel(pte_t *pte)
{
*(unsigned long *)pte = (unsigned long) pte_quicklist;
pte_quicklist = (unsigned long *) pte;
pgtable_cache_size++;
free_page((unsigned long) pte);
}
extern __inline__ void pte_free_slow(pte_t *pte)
static inline void pte_free(struct page *pte)
{
free_page((unsigned long) pte);
__free_page(pte);
}
#define pte_free(pte) pte_free_fast(pte)
extern int do_check_pgt_cache(int, int);
#define pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
/*
* This establishes kernel virtual mappings (e.g., as a result of a
......@@ -148,151 +116,6 @@ extern int do_check_pgt_cache(int, int);
*/
#define set_pgdir(addr,entry) do { } while(0)
/*
* TLB flushing:
*
* - flush_tlb() flushes the current mm struct TLBs
* - flush_tlb_all() flushes all processes TLBs
* called only from vmalloc/vfree
* - flush_tlb_mm(mm) flushes the specified mm context TLB's
* - flush_tlb_page(vma, vmaddr) flushes one page
* - flush_tlb_range(vma, start, end) flushes a range of pages
* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
*/
/*
* S/390 has three ways of flushing TLBs
* 'ptlb' does a flush of the local processor
* 'csp' flushes the TLBs on all PUs of a SMP
* 'ipte' invalidates a pte in a page table and flushes that out of
* the TLBs of all PUs of a SMP
*/
#define local_flush_tlb() \
do { __asm__ __volatile__("ptlb": : :"memory"); } while (0)
#ifndef CONFIG_SMP
/*
* We always need to flush, since s390 does not flush tlb
* on each context switch
*/
static inline void flush_tlb(void)
{
local_flush_tlb();
}
static inline void flush_tlb_all(void)
{
local_flush_tlb();
}
static inline void flush_tlb_mm(struct mm_struct *mm)
{
local_flush_tlb();
}
static inline void flush_tlb_page(struct vm_area_struct *vma,
unsigned long addr)
{
local_flush_tlb();
}
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
local_flush_tlb();
}
#else
#include <asm/smp.h>
extern void smp_ptlb_all(void);
static inline void global_flush_tlb_csp(void)
{
int cs1=0,dum=0;
int *adr;
long long dummy=0;
adr = (int*) (((int)(((int*) &dummy)+1) & 0xfffffffc)|1);
__asm__ __volatile__("lr 2,%0\n\t"
"lr 3,%1\n\t"
"lr 4,%2\n\t"
"csp 2,4" :
: "d" (cs1), "d" (dum), "d" (adr)
: "2", "3", "4");
}
static inline void global_flush_tlb(void)
{
if (MACHINE_HAS_CSP)
global_flush_tlb_csp();
else
smp_ptlb_all();
}
/*
* We only have to do global flush of tlb if process run since last
* flush on any other pu than current.
* If we have threads (mm->count > 1) we always do a global flush,
* since the process runs on more than one processor at the same time.
*/
static inline void __flush_tlb_mm(struct mm_struct * mm)
{
if ((smp_num_cpus > 1) &&
((atomic_read(&mm->mm_count) != 1) ||
(mm->cpu_vm_mask != (1UL << smp_processor_id())))) {
mm->cpu_vm_mask = (1UL << smp_processor_id());
global_flush_tlb();
} else {
local_flush_tlb();
}
}
static inline void flush_tlb(void)
{
__flush_tlb_mm(current->mm);
}
static inline void flush_tlb_all(void)
{
global_flush_tlb();
}
static inline void flush_tlb_mm(struct mm_struct *mm)
{
__flush_tlb_mm(mm);
}
static inline void flush_tlb_page(struct vm_area_struct *vma,
unsigned long addr)
{
__flush_tlb_mm(vma->vm_mm);
}
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
__flush_tlb_mm(vma->vm_mm);
}
#endif
extern inline void flush_tlb_pgtables(struct mm_struct *mm,
unsigned long start, unsigned long end)
{
/* S/390 does not keep any page table caches in TLB */
}
static inline int ptep_test_and_clear_and_flush_young(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
/* No need to flush TLB; bits are in storage key */
return ptep_test_and_clear_young(ptep);
}
static inline int ptep_test_and_clear_and_flush_dirty(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
/* No need to flush TLB; bits are in storage key */
return ptep_test_and_clear_dirty(ptep);
}
static inline pte_t ptep_invalidate(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
......
include/asm-s390/pgtable.h
View file @ e105d28a
......@@ -33,17 +33,6 @@
extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096)));
extern void paging_init(void);
/* Caches aren't brain-dead on S390. */
#define flush_cache_all() do { } while (0)
#define flush_cache_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr) do { } while (0)
#define flush_page_to_ram(page) do { } while (0)
#define flush_dcache_page(page) do { } while (0)
#define flush_icache_range(start, end) do { } while (0)
#define flush_icache_page(vma,pg) do { } while (0)
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
/*
* The S390 doesn't have any external MMU info: the kernel page
* tables contain all the necessary information.
......@@ -156,7 +145,8 @@ extern char empty_zero_page[PAGE_SIZE];
/* Bits in the page table entry */
#define _PAGE_PRESENT 0x001 /* Software */
#define _PAGE_MKCLEAR 0x002 /* Software */
#define _PAGE_MKCLEAN 0x002 /* Software */
#define _PAGE_ISCLEAN 0x004 /* Software */
#define _PAGE_RO 0x200 /* HW read-only */
#define _PAGE_INVALID 0x400 /* HW invalid */
......@@ -190,9 +180,11 @@ extern char empty_zero_page[PAGE_SIZE];
* No mapping available
*/
#define PAGE_INVALID __pgprot(_PAGE_INVALID)
#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_INVALID)
#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_RO)
#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_RO)
#define PAGE_NONE_SHARED __pgprot(_PAGE_PRESENT|_PAGE_INVALID)
#define PAGE_NONE_PRIVATE __pgprot(_PAGE_PRESENT|_PAGE_INVALID|_PAGE_ISCLEAN)
#define PAGE_RO_SHARED __pgprot(_PAGE_PRESENT|_PAGE_RO)
#define PAGE_RO_PRIVATE __pgprot(_PAGE_PRESENT|_PAGE_RO|_PAGE_ISCLEAN)
#define PAGE_COPY __pgprot(_PAGE_PRESENT|_PAGE_RO|_PAGE_ISCLEAN)
#define PAGE_SHARED __pgprot(_PAGE_PRESENT)
#define PAGE_KERNEL __pgprot(_PAGE_PRESENT)
......@@ -202,21 +194,21 @@ extern char empty_zero_page[PAGE_SIZE];
* the closest we can get..
*/
/*xwr*/
#define __P000 PAGE_NONE
#define __P001 PAGE_READONLY
#define __P000 PAGE_NONE_PRIVATE
#define __P001 PAGE_RO_PRIVATE
#define __P010 PAGE_COPY
#define __P011 PAGE_COPY
#define __P100 PAGE_READONLY
#define __P101 PAGE_READONLY
#define __P100 PAGE_RO_PRIVATE
#define __P101 PAGE_RO_PRIVATE
#define __P110 PAGE_COPY
#define __P111 PAGE_COPY
#define __S000 PAGE_NONE
#define __S001 PAGE_READONLY
#define __S000 PAGE_NONE_SHARED
#define __S001 PAGE_RO_SHARED
#define __S010 PAGE_SHARED
#define __S011 PAGE_SHARED
#define __S100 PAGE_READONLY
#define __S101 PAGE_READONLY
#define __S100 PAGE_RO_SHARED
#define __S101 PAGE_RO_SHARED
#define __S110 PAGE_SHARED
#define __S111 PAGE_SHARED
......@@ -227,10 +219,10 @@ extern char empty_zero_page[PAGE_SIZE];
*/
extern inline void set_pte(pte_t *pteptr, pte_t pteval)
{
if ((pte_val(pteval) & (_PAGE_MKCLEAR|_PAGE_INVALID))
== _PAGE_MKCLEAR)
if ((pte_val(pteval) & (_PAGE_MKCLEAN|_PAGE_INVALID))
== _PAGE_MKCLEAN)
{
pte_val(pteval) &= ~_PAGE_MKCLEAR;
pte_val(pteval) &= ~_PAGE_MKCLEAN;
asm volatile ("sske %0,%1"
: : "d" (0), "a" (pte_val(pteval)));
......@@ -239,8 +231,6 @@ extern inline void set_pte(pte_t *pteptr, pte_t pteval)
*pteptr = pteval;
}
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
/*
* pgd/pmd/pte query functions
*/
......@@ -277,6 +267,8 @@ extern inline int pte_dirty(pte_t pte)
{
int skey;
if (pte_val(pte) & _PAGE_ISCLEAN)
return 0;
asm volatile ("iske %0,%1" : "=d" (skey) : "a" (pte_val(pte)));
return skey & _PAGE_CHANGED;
}
......@@ -307,15 +299,14 @@ extern inline void pte_clear(pte_t *ptep)
pte_val(*ptep) = _PAGE_INVALID;
}
#define PTE_INIT(x) pte_clear(x)
/*
* The following pte modification functions only work if
* pte_present() is true. Undefined behaviour if not..
*/
extern inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
pte_val(pte) = (pte_val(pte) & PAGE_MASK) | pgprot_val(newprot);
pte_val(pte) &= PAGE_MASK | _PAGE_ISCLEAN;
pte_val(pte) |= pgprot_val(newprot) & ~_PAGE_ISCLEAN;
return pte;
}
......@@ -342,13 +333,11 @@ extern inline pte_t pte_mkclean(pte_t pte)
extern inline pte_t pte_mkdirty(pte_t pte)
{
/* We can't set the changed bit atomically. For now we
* set (!) the page referenced bit. */
asm volatile ("sske %0,%1"
: : "d" (_PAGE_CHANGED|_PAGE_REFERENCED),
"a" (pte_val(pte)));
pte_val(pte) &= ~_PAGE_MKCLEAR;
/* We do not explicitly set the dirty bit because the
* sske instruction is slow. It is faster to let the
* next instruction set the dirty bit.
*/
pte_val(pte) &= ~(_PAGE_MKCLEAN | _PAGE_ISCLEAN);
return pte;
}
......@@ -382,6 +371,8 @@ static inline int ptep_test_and_clear_dirty(pte_t *ptep)
{
int skey;
if (pte_val(*ptep) & _PAGE_ISCLEAN)
return 0;
asm volatile ("iske %0,%1" : "=d" (skey) : "a" (*ptep));
if ((skey & _PAGE_CHANGED) == 0)
return 0;
......@@ -414,7 +405,7 @@ static inline void ptep_mkdirty(pte_t *ptep)
* Conversion functions: convert a page and protection to a page entry,
* and a page entry and page directory to the page they refer to.
*/
extern inline pte_t mk_pte_phys(unsigned long physpage, pgprot_t pgprot)
static inline pte_t mk_pte_phys(unsigned long physpage, pgprot_t pgprot)
{
pte_t __pte;
pte_val(__pte) = physpage + pgprot_val(pgprot);
......@@ -424,24 +415,41 @@ extern inline pte_t mk_pte_phys(unsigned long physpage, pgprot_t pgprot)
#define mk_pte(pg, pgprot) \
({ \
struct page *__page = (pg); \
pgprot_t __pgprot = (pgprot); \
unsigned long __physpage = __pa((__page-mem_map) << PAGE_SHIFT); \
pte_t __pte = mk_pte_phys(__physpage, (pgprot)); \
pte_t __pte = mk_pte_phys(__physpage, __pgprot); \
\
if (__page != ZERO_PAGE(__physpage)) { \
int __users = page_count(__page); \
__users -= !!PagePrivate(__page) + !!__page->mapping; \
\
if (__users == 1) \
pte_val(__pte) |= _PAGE_MKCLEAR; \
if (!(pgprot_val(__pgprot) & _PAGE_ISCLEAN)) { \
int __users = !!PagePrivate(__page) + !!__page->mapping; \
if (__users + page_count(__page) == 1) \
pte_val(__pte) |= _PAGE_MKCLEAN; \
} \
__pte; \
})
#define pfn_pte(pfn, pgprot) \
({ \
struct page *__page = mem_map+(pfn); \
pgprot_t __pgprot = (pgprot); \
unsigned long __physpage = __pa((pfn) << PAGE_SHIFT); \
pte_t __pte = mk_pte_phys(__physpage, __pgprot); \
\
if (!(pgprot_val(__pgprot) & _PAGE_ISCLEAN)) { \
int __users = !!PagePrivate(__page) + !!__page->mapping; \
if (__users + page_count(__page) == 1) \
pte_val(__pte) |= _PAGE_MKCLEAN; \
} \
__pte; \
})
#define pte_page(x) (mem_map+(unsigned long)((pte_val(x) >> PAGE_SHIFT)))
#define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
#define pte_page(x) pfn_to_page(pte_pfn(x))
#define pmd_page_kernel(pmd) (pmd_val(pmd) & PAGE_MASK)
#define pmd_page(pmd) (mem_map+(pmd_val(pmd) >> PAGE_SHIFT))
#define pmd_page(pmd) \
((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
#define pgd_page_kernel(pgd) (pgd_val(pgd) & PAGE_MASK)
/* to find an entry in a page-table-directory */
#define pgd_index(address) ((address >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
......@@ -457,8 +465,13 @@ extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
}
/* Find an entry in the third-level page table.. */
#define pte_offset(pmd, address) \
((pte_t *) (pmd_page(*pmd) + ((address>>10) & ((PTRS_PER_PTE-1)<<2))))
#define __pte_offset(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
#define pte_offset_kernel(pmd, address) \
((pte_t *) pmd_page_kernel(*(pmd)) + __pte_offset(address))
#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address)
#define pte_offset_map_nested(pmd, address) pte_offset_kernel(pmd, address)
#define pte_unmap(pte) do { } while (0)
#define pte_unmap_nested(pte) do { } while (0)
/*
* A page-table entry has some bits we have to treat in a special way.
......
include/asm-s390/processor.h
View file @ e105d28a
......@@ -16,6 +16,7 @@
#include <asm/page.h>
#include <asm/ptrace.h>
#ifdef __KERNEL__
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
......@@ -61,11 +62,8 @@ extern struct task_struct *last_task_used_math;
*/
#define TASK_UNMAPPED_BASE (TASK_SIZE / 2)
#define THREAD_SIZE (2*PAGE_SIZE)
typedef struct {
unsigned long seg;
unsigned long acc4;
__u32 ar4;
} mm_segment_t;
/* if you change the thread_struct structure, you must
......@@ -74,8 +72,6 @@ typedef struct {
struct thread_struct
{
struct pt_regs *regs; /* the user registers can be found on*/
s390_fp_regs fp_regs;
__u32 ar2; /* kernel access register 2 */
__u32 ar4; /* kernel access register 4 */
......@@ -84,8 +80,6 @@ struct thread_struct
__u32 error_code; /* error-code of last prog-excep. */
__u32 prot_addr; /* address of protection-excep. */
__u32 trap_no;
/* perform syscall argument validation (get/set_fs) */
mm_segment_t fs;
per_struct per_info;/* Must be aligned on an 4 byte boundary*/
/* Used to give failing instruction back to user for ieee exceptions */
addr_t ieee_instruction_pointer;
......@@ -95,14 +89,12 @@ struct thread_struct
typedef struct thread_struct thread_struct;
#define INIT_THREAD { (struct pt_regs *) 0, \
{ 0,{{0},{0},{0},{0},{0},{0},{0},{0},{0},{0}, \
#define INIT_THREAD {{0,{{0},{0},{0},{0},{0},{0},{0},{0},{0},{0}, \
{0},{0},{0},{0},{0},{0}}}, \
0, 0, \
sizeof(init_stack) + (__u32) &init_stack, \
(__pa((__u32) &swapper_pg_dir[0]) + _SEGMENT_TABLE),\
0,0,0, \
(mm_segment_t) { 0,1}, \
(per_struct) {{{{0,}}},0,0,0,0,{{0,}}}, \
0, 0 \
}
......@@ -115,6 +107,7 @@ typedef struct thread_struct thread_struct;
} while (0)
/* Forward declaration, a strange C thing */
struct task_struct;
struct mm_struct;
/* Free all resources held by a thread. */
......@@ -126,28 +119,20 @@ extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
#define release_segments(mm) do { } while (0)
/*
* Return saved PC of a blocked thread. used in kernel/sched
* Return saved PC of a blocked thread.
*/
extern inline unsigned long thread_saved_pc(struct thread_struct *t)
{
return (t->regs) ? ((unsigned long)t->regs->psw.addr) : 0;
}
unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) ((tsk)->thread.regs->psw.addr)
#define KSTK_ESP(tsk) ((tsk)->thread.ksp)
extern unsigned long thread_saved_pc(struct task_struct *t);
/* Allocation and freeing of basic task resources. */
/*
* NOTE! The task struct and the stack go together
* Print register of task into buffer. Used in fs/proc/array.c.
*/
#define alloc_task_struct() \
((struct task_struct *) __get_free_pages(GFP_KERNEL,1))
#define free_task_struct(p) free_pages((unsigned long)(p),1)
#define get_task_struct(tsk) atomic_inc(&virt_to_page(tsk)->count)
extern char *task_show_regs(struct task_struct *task, char *buffer);
#define init_task (init_task_union.task)
#define init_stack (init_task_union.stack)
unsigned long get_wchan(struct task_struct *p);
#define __KSTK_PTREGS(tsk) ((struct pt_regs *) \
(((addr_t) tsk->thread_info + THREAD_SIZE - sizeof(struct pt_regs)) & -8L))
#define KSTK_EIP(tsk) (__KSTK_PTREGS(tsk)->psw.addr)
#define KSTK_ESP(tsk) (__KSTK_PTREGS(tsk)->gprs[15])
#define cpu_relax() do { } while (0)
......@@ -164,6 +149,46 @@ unsigned long get_wchan(struct task_struct *p);
#define USER_STD_MASK 0x00000080UL
#define PSW_PROBLEM_STATE 0x00010000UL
/*
* Set PSW mask to specified value, while leaving the
* PSW addr pointing to the next instruction.
*/
static inline void __load_psw_mask (unsigned long mask)
{
unsigned long addr;
psw_t psw;
psw.mask = mask;
asm volatile (
" basr %0,0\n"
"0: ahi %0,1f-0b\n"
" st %0,4(%1)\n"
" lpsw 0(%1)\n"
"1:"
: "=&d" (addr) : "a" (&psw) : "memory", "cc" );
}
/*
* Function to stop a processor until an interruption occured
*/
static inline void enabled_wait(void)
{
unsigned long reg;
psw_t wait_psw;
wait_psw.mask = 0x070e0000;
asm volatile (
" basr %0,0\n"
"0: la %0,1f-0b(%0)\n"
" st %0,4(%1)\n"
" oi 4(%1),0x80\n"
" lpsw 0(%1)\n"
"1:"
: "=&a" (reg) : "a" (&wait_psw) : "memory", "cc" );
}
/*
* Function to drop a processor into disabled wait state
*/
......@@ -200,4 +225,6 @@ static inline void disabled_wait(unsigned long code)
: : "a" (dw_psw), "a" (&ctl_buf) : "cc" );
}
#endif
#endif /* __ASM_S390_PROCESSOR_H */
include/asm-s390/ptrace.h
View file @ e105d28a
......@@ -105,12 +105,16 @@
#define STACK_FRAME_OVERHEAD 96 /* size of minimum stack frame */
#define PTRACE_SETOPTIONS 21
/* options set using PTRACE_SETOPTIONS */
#define PTRACE_O_TRACESYSGOOD 0x00000001
#ifndef __ASSEMBLY__
#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/types.h>
#include <asm/current.h>
#include <asm/setup.h>
/* this typedef defines how a Program Status Word looks like */
......@@ -118,7 +122,7 @@ typedef struct
{
__u32 mask;
__u32 addr;
} psw_t __attribute__ ((aligned(8)));
} __attribute__ ((aligned(8))) psw_t;
#ifdef __KERNEL__
#define FIX_PSW(addr) ((unsigned long)(addr)|0x80000000UL)
......@@ -150,8 +154,8 @@ typedef struct
#define FPC_VALID_MASK 0xF8F8FF03
/*
* The first entries in pt_regs, gdb_pt_regs and user_regs_struct
* are common for all three structures. The s390_regs structure
* The first entries in pt_regs and user_regs_struct
* are common for the two structures. The s390_regs structure
* covers the common parts. It simplifies copying the common part
* between the three structures.
*/
......@@ -174,34 +178,15 @@ struct pt_regs
__u32 acrs[NUM_ACRS];
__u32 orig_gpr2;
__u32 trap;
__u32 old_ilc;
};
/*
* The gdb_pt_regs struct is used instead of the pt_regs structure
* if kernel remote debugging is used.
*/
#if CONFIG_REMOTE_DEBUG
struct gdb_pt_regs
{
psw_t psw;
__u32 gprs[NUM_GPRS];
__u32 acrs[NUM_ACRS];
__u32 orig_gpr2;
__u32 trap;
__u32 crs[16];
s390_fp_regs fp_regs;
__u32 old_ilc;
};
#endif
/*
* Now for the program event recording (trace) definitions.
*/
typedef struct
{
__u32 cr[3];
} per_cr_words __attribute__((packed));
} per_cr_words;
#define PER_EM_MASK 0xE8000000
......@@ -223,14 +208,14 @@ typedef struct
unsigned : 21;
addr_t starting_addr;
addr_t ending_addr;
} per_cr_bits __attribute__((packed));
} per_cr_bits;
typedef struct
{
__u16 perc_atmid; /* 0x096 */
__u32 address; /* 0x098 */
__u8 access_id; /* 0x0a1 */
} per_lowcore_words __attribute__((packed));
} per_lowcore_words;
typedef struct
{
......@@ -249,14 +234,14 @@ typedef struct
addr_t address; /* 0x098 */
unsigned : 4; /* 0x0a1 */
unsigned access_id : 4;
} per_lowcore_bits __attribute__((packed));
} per_lowcore_bits;
typedef struct
{
union {
per_cr_words words;
per_cr_bits bits;
} control_regs __attribute__((packed));
} control_regs;
/*
* Use these flags instead of setting em_instruction_fetch
* directly they are used so that single stepping can be
......@@ -275,7 +260,7 @@ typedef struct
per_lowcore_words words;
per_lowcore_bits bits;
} lowcore;
} per_struct __attribute__((packed));
} per_struct;
typedef struct
{
......@@ -294,6 +279,7 @@ typedef struct
#define PTRACE_PEEKDATA_AREA 0x5003
#define PTRACE_POKETEXT_AREA 0x5004
#define PTRACE_POKEDATA_AREA 0x5005
/*
* PT_PROT definition is loosely based on hppa bsd definition in
* gdb/hppab-nat.c
......@@ -345,7 +331,6 @@ struct user_regs_struct
#define user_mode(regs) (((regs)->psw.mask & PSW_PROBLEM_STATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr)
extern void show_regs(struct pt_regs * regs);
extern char *task_show_regs(struct task_struct *task, char *buffer);
#endif
#endif /* __ASSEMBLY__ */
......
include/asm-s390/qdio.h 0 → 100644
View file @ e105d28a
This diff is collapsed.
include/asm-s390/rwsem.h 0 → 100644
View file @ e105d28a
#ifndef _S390_RWSEM_H
#define _S390_RWSEM_H
/*
* include/asm-s390/rwsem.h
*
* S390 version
* Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*
* Based on asm-alpha/semaphore.h and asm-i386/rwsem.h
*/
/*
*
* The MSW of the count is the negated number of active writers and waiting
* lockers, and the LSW is the total number of active locks
*
* The lock count is initialized to 0 (no active and no waiting lockers).
*
* When a writer subtracts WRITE_BIAS, it'll get 0xffff0001 for the case of an
* uncontended lock. This can be determined because XADD returns the old value.
* Readers increment by 1 and see a positive value when uncontended, negative
* if there are writers (and maybe) readers waiting (in which case it goes to
* sleep).
*
* The value of WAITING_BIAS supports up to 32766 waiting processes. This can
* be extended to 65534 by manually checking the whole MSW rather than relying
* on the S flag.
*
* The value of ACTIVE_BIAS supports up to 65535 active processes.
*
* This should be totally fair - if anything is waiting, a process that wants a
* lock will go to the back of the queue. When the currently active lock is
* released, if there's a writer at the front of the queue, then that and only
* that will be woken up; if there's a bunch of consequtive readers at the
* front, then they'll all be woken up, but no other readers will be.
*/
#ifndef _LINUX_RWSEM_H
#error please dont include asm/rwsem.h directly, use linux/rwsem.h instead
#endif
#ifdef __KERNEL__
#include <linux/list.h>
#include <linux/spinlock.h>
struct rwsem_waiter;
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
/*
* the semaphore definition
*/
struct rw_semaphore {
signed long count;
spinlock_t wait_lock;
struct list_head wait_list;
};
#define RWSEM_UNLOCKED_VALUE 0x00000000
#define RWSEM_ACTIVE_BIAS 0x00000001
#define RWSEM_ACTIVE_MASK 0x0000ffff
#define RWSEM_WAITING_BIAS (-0x00010000)
#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
/*
* initialisation
*/
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)
static inline void init_rwsem(struct rw_semaphore *sem)
{
sem->count = RWSEM_UNLOCKED_VALUE;
spin_lock_init(&sem->wait_lock);
INIT_LIST_HEAD(&sem->wait_list);
}
/*
* lock for reading
*/
static inline void __down_read(struct rw_semaphore *sem)
{
signed long old, new;
__asm__ __volatile__(
" l %0,0(%2)\n"
"0: lr %1,%0\n"
" ahi %1,%3\n"
" cs %0,%1,0(%2)\n"
" jl 0b"
: "=&d" (old), "=&d" (new)
: "a" (&sem->count), "i" (RWSEM_ACTIVE_READ_BIAS)
: "cc", "memory" );
if (old < 0)
rwsem_down_read_failed(sem);
}
/*
* lock for writing
*/
static inline void __down_write(struct rw_semaphore *sem)
{
signed long old, new, tmp;
tmp = RWSEM_ACTIVE_WRITE_BIAS;
__asm__ __volatile__(
" l %0,0(%2)\n"
"0: lr %1,%0\n"
" a %1,%3\n"
" cs %0,%1,0(%2)\n"
" jl 0b"
: "=&d" (old), "=&d" (new)
: "a" (&sem->count), "m" (tmp)
: "cc", "memory" );
if (old != 0)
rwsem_down_write_failed(sem);
}
/*
* unlock after reading
*/
static inline void __up_read(struct rw_semaphore *sem)
{
signed long old, new;
__asm__ __volatile__(
" l %0,0(%2)\n"
"0: lr %1,%0\n"
" ahi %1,%3\n"
" cs %0,%1,0(%2)\n"
" jl 0b"
: "=&d" (old), "=&d" (new)
: "a" (&sem->count), "i" (-RWSEM_ACTIVE_READ_BIAS)
: "cc", "memory" );
if (new < 0)
if ((new & RWSEM_ACTIVE_MASK) == 0)
rwsem_wake(sem);
}
/*
* unlock after writing
*/
static inline void __up_write(struct rw_semaphore *sem)
{
signed long old, new, tmp;
tmp = -RWSEM_ACTIVE_WRITE_BIAS;
__asm__ __volatile__(
" l %0,0(%2)\n"
"0: lr %1,%0\n"
" a %1,%3\n"
" cs %0,%1,0(%2)\n"
" jl 0b"
: "=&d" (old), "=&d" (new)
: "a" (&sem->count), "m" (tmp)
: "cc", "memory" );
if (new < 0)
if ((new & RWSEM_ACTIVE_MASK) == 0)
rwsem_wake(sem);
}
/*
* implement atomic add functionality
*/
static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
{
signed long old, new;
__asm__ __volatile__(
" l %0,0(%2)\n"
"0: lr %1,%0\n"
" ar %1,%3\n"
" cs %0,%1,0(%2)\n"
" jl 0b"
: "=&d" (old), "=&d" (new)
: "a" (&sem->count), "d" (delta)
: "cc", "memory" );
}
/*
* implement exchange and add functionality
*/
static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
{
signed long old, new;
__asm__ __volatile__(
" l %0,0(%2)\n"
"0: lr %1,%0\n"
" ar %1,%3\n"
" cs %0,%1,0(%2)\n"
" jl 0b"
: "=&d" (old), "=&d" (new)
: "a" (&sem->count), "d" (delta)
: "cc", "memory" );
return new;
}
#endif /* __KERNEL__ */
#endif /* _S390_RWSEM_H */
include/asm-s390/s390-gdbregs.h deleted 100644 → 0
View file @ c1997c8d
/*
* include/asm-s390/s390-gdbregs.h
*
* S390 version
* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
*
* used both by the linux kernel for remote debugging & gdb
*/
#ifndef _S390_GDBREGS_H
#define _S390_GDBREGS_H
#ifdef __KERNEL__
#include <asm/s390-regs-common.h>
#else
#include <s390/s390-regs-common.h>
#endif
#define S390_MAX_INSTR_SIZE 6
#define NUM_REGS (2+NUM_GPRS+NUM_ACRS+NUM_CRS+1+NUM_FPRS)
#define FIRST_ACR (2+NUM_GPRS)
#define LAST_ACR (FIRST_ACR+NUM_ACRS-1)
#define FIRST_CR (FIRST_ACR+NUM_ACRS)
#define LAST_CR (FIRST_CR+NUM_CRS-1)
#define PSWM_REGNUM 0
#define PC_REGNUM 1
#define GP0_REGNUM 2 /* GPR register 0 */
#define GP_LAST_REGNUM (GP0_REGNUM+NUM_GPRS-1)
#define RETADDR_REGNUM (GP0_REGNUM+14) /* Usually return address */
#define SP_REGNUM (GP0_REGNUM+15) /* Contains address of top of stack */
#define FP_REGNUM SP_REGNUM /* needed in findvar.c still */
#define FRAME_REGNUM (GP0_REGNUM+11)
#define FPC_REGNUM (GP0_REGNUM+NUM_GPRS+NUM_ACRS+NUM_CRS)
#define FP0_REGNUM (FPC_REGNUM+1) /* FPR (Floating point) register 0 */
#define FPLAST_REGNUM (FP0_REGNUM+NUM_FPRS-1) /* Last floating point register */
/* The top of this structure is as similar as possible to a pt_regs structure to */
/* simplify code */
typedef struct
{
S390_REGS_COMMON
__u32 crs[NUM_CRS];
s390_fp_regs fp_regs;
} s390_gdb_regs __attribute__((packed));
#define REGISTER_NAMES \
{ \
"pswm","pswa", \
"gpr0","gpr1","gpr2","gpr3","gpr4","gpr5","gpr6","gpr7", \
"gpr8","gpr9","gpr10","gpr11","gpr12","gpr13","gpr14","gpr15", \
"acr0","acr1","acr2","acr3","acr4","acr5","acr6","acr7", \
"acr8","acr9","acr10","acr11","acr12","acr13","acr14","acr15", \
"cr0","cr1","cr2","cr3","cr4","cr5","cr6","cr7", \
"cr8","cr9","cr10","cr11","cr12","cr13","cr14","cr15", \
"fpc", \
"fpr0","fpr1","fpr2","fpr3","fpr4","fpr5","fpr6","fpr7", \
"fpr8","fpr9","fpr10","fpr11","fpr12","fpr13","fpr14","fpr15" \
}
/* Index within `registers' of the first byte of the space for
register N. */
#define FP0_OFFSET ((PSW_MASK_SIZE+PSW_ADDR_SIZE)+ \
(GPR_SIZE*NUM_GPRS)+(ACR_SIZE+NUM_ACRS)+ \
(CR_SIZE*NUM_CRS)+(FPC_SIZE+FPC_PAD_SIZE))
#define REGISTER_BYTES \
((FP0_OFFSET)+(FPR_SIZE*NUM_FPRS))
#define REGISTER_BYTE(N) ((N) < FP0_REGNUM ? (N)*4:(FP0_OFFSET+((N)-FP0_REGNUM)*FPR_SIZE))
#endif
include/asm-s390/s390_ext.h
View file @ e105d28a
......@@ -25,6 +25,10 @@ typedef struct ext_int_info_t {
extern ext_int_info_t *ext_int_hash[];
int register_external_interrupt(__u16 code, ext_int_handler_t handler);
int register_early_external_interrupt(__u16 code, ext_int_handler_t handler,
ext_int_info_t *info);
int unregister_external_interrupt(__u16 code, ext_int_handler_t handler);
int unregister_early_external_interrupt(__u16 code, ext_int_handler_t handler,
ext_int_info_t *info);
#endif
include/asm-s390/s390io.h
View file @ e105d28a
......@@ -18,10 +18,13 @@
typedef struct _ioinfo {
unsigned int irq; /* aka. subchannel number */
spinlock_t irq_lock; /* irq lock */
void *private_data; /* pointer to private data */
struct _ioinfo *prev;
struct _ioinfo *next;
__u8 st; /* subchannel type */
union {
unsigned int info;
struct {
......@@ -50,10 +53,9 @@ typedef struct _ioinfo {
unsigned int esid : 1; /* Ext. SenseID supported by HW */
unsigned int rcd : 1; /* RCD supported by HW */
unsigned int repnone : 1; /* don't call IRQ handler on interrupt */
unsigned int newreq : 1; /* new register interface */
unsigned int dval : 1; /* device number valid */
unsigned int unknown : 1; /* unknown device - if SenseID failed */
unsigned int unused : (sizeof(unsigned int)*8 - 24); /* unused */
unsigned int unused : (sizeof(unsigned int)*8 - 23); /* unused */
} __attribute__ ((packed)) flags;
} ui;
......@@ -75,6 +77,7 @@ typedef struct _ioinfo {
unsigned long qintparm; /* queued interruption parameter */
unsigned long qflag; /* queued flags */
__u8 qlpm; /* queued logical path mask */
ssd_info_t ssd_info; /* subchannel description */
} __attribute__ ((aligned(8))) ioinfo_t;
......@@ -89,6 +92,12 @@ typedef struct _ioinfo {
#define IOINFO_FLAGS_REPALL 0x00800000
extern ioinfo_t *ioinfo[];
int s390_set_private_data(int irq, void * data);
void * s390_get_private_data(int irq);
#define CHSC_SEI_ACC_CHPID 1
#define CHSC_SEI_ACC_LINKADDR 2
#define CHSC_SEI_ACC_FULLLINKADDR 3
#endif /* __s390io_h */
include/asm-s390/s390mach.h
View file @ e105d28a
......@@ -13,10 +13,23 @@
#include <asm/types.h>
typedef struct _mci {
__u32 to_be_defined_1 : 9;
__u32 cp : 1; /* channel-report pending */
__u32 to_be_defined_2 : 22;
__u32 to_be_defined_3;
__u32 sd : 1; /* 00 system damage */
__u32 pd : 1; /* 01 instruction-processing damage */
__u32 sr : 1; /* 02 system recovery */
__u32 to_be_defined_1 : 4; /* 03-06 */
__u32 dg : 1; /* 07 degradation */
__u32 w : 1; /* 08 warning pending */
__u32 cp : 1; /* 09 channel-report pending */
__u32 to_be_defined_2 : 6; /* 10-15 */
__u32 se : 1; /* 16 storage error uncorrected */
__u32 sc : 1; /* 17 storage error corrected */
__u32 ke : 1; /* 18 storage-key error uncorrected */
__u32 ds : 1; /* 19 storage degradation */
__u32 to_be_defined_3 : 4; /* 20-23 */
__u32 fa : 1; /* 24 failing storage address validity */
__u32 to_be_defined_4 : 7; /* 25-31 */
__u32 ie : 1; /* 32 indirect storage error */
__u32 to_be_defined_5 : 31; /* 33-63 */
} mci_t;
//
......
include/asm-s390/scatterlist.h
View file @ e105d28a
#ifndef _ASMS390X_SCATTERLIST_H
#define _ASMS390X_SCATTERLIST_H
#ifndef _ASMS390_SCATTERLIST_H
#define _ASMS390_SCATTERLIST_H
struct scatterlist {
struct page *page;
......
include/asm-s390/semaphore.h
View file @ e105d28a
......@@ -2,7 +2,7 @@
* include/asm-s390/semaphore.h
*
* S390 version
* Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
*
* Derived from "include/asm-i386/semaphore.h"
* (C) Copyright 1996 Linus Torvalds
......@@ -17,16 +17,17 @@
#include <linux/rwsem.h>
struct semaphore {
/*
* Note that any negative value of count is equivalent to 0,
* but additionally indicates that some process(es) might be
* sleeping on `wait'.
*/
atomic_t count;
int sleepers;
wait_queue_head_t wait;
};
#define __SEM_DEBUG_INIT(name)
#define __SEMAPHORE_INITIALIZER(name,count) \
{ ATOMIC_INIT(count), 0, __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) \
__SEM_DEBUG_INIT(name) }
{ ATOMIC_INIT(count), __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) }
#define __MUTEX_INITIALIZER(name) \
__SEMAPHORE_INITIALIZER(name,1)
......@@ -39,7 +40,7 @@ struct semaphore {
static inline void sema_init (struct semaphore *sem, int val)
{
*sem = (struct semaphore)__SEMAPHORE_INITIALIZER((*sem),val);
*sem = (struct semaphore) __SEMAPHORE_INITIALIZER((*sem),val);
}
static inline void init_MUTEX (struct semaphore *sem)
......@@ -52,11 +53,6 @@ static inline void init_MUTEX_LOCKED (struct semaphore *sem)
sema_init(sem, 0);
}
asmlinkage void __down_failed(void /* special register calling convention */);
asmlinkage int __down_failed_interruptible(void /* params in registers */);
asmlinkage int __down_failed_trylock(void /* params in registers */);
asmlinkage void __up_wakeup(void /* special register calling convention */);
asmlinkage void __down(struct semaphore * sem);
asmlinkage int __down_interruptible(struct semaphore * sem);
asmlinkage int __down_trylock(struct semaphore * sem);
......@@ -79,11 +75,28 @@ static inline int down_interruptible(struct semaphore * sem)
static inline int down_trylock(struct semaphore * sem)
{
int ret = 0;
if (atomic_dec_return(&sem->count) < 0)
ret = __down_trylock(sem);
return ret;
int old_val, new_val;
/*
* This inline assembly atomically implements the equivalent
* to the following C code:
* old_val = sem->count.counter;
* if ((new_val = old_val) > 0)
* sem->count.counter = --new_val;
* In the ppc code this is called atomic_dec_if_positive.
*/
__asm__ __volatile__ (
" l %0,0(%3)\n"
"0: ltr %1,%0\n"
" jle 1f\n"
" ahi %1,-1\n"
" cs %0,%1,0(%3)\n"
" jl 0b\n"
"1:"
: "=&d" (old_val), "=&d" (new_val),
"+m" (sem->count.counter)
: "a" (&sem->count.counter) : "cc" );
return old_val <= 0;
}
static inline void up(struct semaphore * sem)
......
include/asm-s390/setup.h
View file @ e105d28a
......@@ -13,7 +13,7 @@
#define RAMDISK_ORIGIN 0x800000
#define RAMDISK_SIZE 0x800000
#ifndef __ASSEMBLER__
#ifndef __ASSEMBLY__
#define IPL_DEVICE (*(unsigned long *) (0x10404))
#define INITRD_START (*(unsigned long *) (0x1040C))
......
include/asm-s390/siginfo.h
View file @ e105d28a
......@@ -13,81 +13,74 @@
#include <asm-generic/siginfo.h>
/*
* si_code values
* Digital reserves positive values for kernel-generated signals.
*/
#undef SI_TIMER
#define SI_TIMER -2 /* sent by timer expiration */
/*
* SIGILL si_codes
*/
#define ILL_ILLOPC 1 /* illegal opcode */
#define ILL_ILLOPN 2 /* illegal operand */
#define ILL_ILLADR 3 /* illegal addressing mode */
#define ILL_ILLTRP 4 /* illegal trap */
#define ILL_PRVOPC 5 /* privileged opcode */
#define ILL_PRVREG 6 /* privileged register */
#define ILL_COPROC 7 /* coprocessor error */
#define ILL_BADSTK 8 /* internal stack error */
#define ILL_ILLOPC (__SI_FAULT|1) /* illegal opcode */
#define ILL_ILLOPN (__SI_FAULT|2) /* illegal operand */
#define ILL_ILLADR (__SI_FAULT|3) /* illegal addressing mode */
#define ILL_ILLTRP (__SI_FAULT|4) /* illegal trap */
#define ILL_PRVOPC (__SI_FAULT|5) /* privileged opcode */
#define ILL_PRVREG (__SI_FAULT|6) /* privileged register */
#define ILL_COPROC (__SI_FAULT|7) /* coprocessor error */
#define ILL_BADSTK (__SI_FAULT|8) /* internal stack error */
#define NSIGILL 8
/*
* SIGFPE si_codes
*/
#define FPE_INTDIV 1 /* integer divide by zero */
#define FPE_INTOVF 2 /* integer overflow */
#define FPE_FLTDIV 3 /* floating point divide by zero */
#define FPE_FLTOVF 4 /* floating point overflow */
#define FPE_FLTUND 5 /* floating point underflow */
#define FPE_FLTRES 6 /* floating point inexact result */
#define FPE_FLTINV 7 /* floating point invalid operation */
#define FPE_FLTSUB 8 /* subscript out of range */
#define FPE_INTDIV (__SI_FAULT|1) /* integer divide by zero */
#define FPE_INTOVF (__SI_FAULT|2) /* integer overflow */
#define FPE_FLTDIV (__SI_FAULT|3) /* floating point divide by zero */
#define FPE_FLTOVF (__SI_FAULT|4) /* floating point overflow */
#define FPE_FLTUND (__SI_FAULT|5) /* floating point underflow */
#define FPE_FLTRES (__SI_FAULT|6) /* floating point inexact result */
#define FPE_FLTINV (__SI_FAULT|7) /* floating point invalid operation */
#define FPE_FLTSUB (__SI_FAULT|8) /* subscript out of range */
#define NSIGFPE 8
/*
* SIGSEGV si_codes
*/
#define SEGV_MAPERR 1 /* address not mapped to object */
#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
#define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */
#define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */
#define NSIGSEGV 2
/*
* SIGBUS si_codes
*/
#define BUS_ADRALN 1 /* invalid address alignment */
#define BUS_ADRERR 2 /* non-existant physical address */
#define BUS_OBJERR 3 /* object specific hardware error */
#define BUS_ADRALN (__SI_FAULT|1) /* invalid address alignment */
#define BUS_ADRERR (__SI_FAULT|2) /* non-existant physical address */
#define BUS_OBJERR (__SI_FAULT|3) /* object specific hardware error */
#define NSIGBUS 3
/*
* SIGTRAP si_codes
*/
#define TRAP_BRKPT 1 /* process breakpoint */
#define TRAP_TRACE 2 /* process trace trap */
#define TRAP_BRKPT (__SI_FAULT|1) /* process breakpoint */
#define TRAP_TRACE (__SI_FAULT|2) /* process trace trap */
#define NSIGTRAP 2
/*
* SIGCHLD si_codes
*/
#define CLD_EXITED 1 /* child has exited */
#define CLD_KILLED 2 /* child was killed */
#define CLD_DUMPED 3 /* child terminated abnormally */
#define CLD_TRAPPED 4 /* traced child has trapped */
#define CLD_STOPPED 5 /* child has stopped */
#define CLD_CONTINUED 6 /* stopped child has continued */
#define CLD_EXITED (__SI_CHLD|1) /* child has exited */
#define CLD_KILLED (__SI_CHLD|2) /* child was killed */
#define CLD_DUMPED (__SI_CHLD|3) /* child terminated abnormally */
#define CLD_TRAPPED (__SI_CHLD|4) /* traced child has trapped */
#define CLD_STOPPED (__SI_CHLD|5) /* child has stopped */
#define CLD_CONTINUED (__SI_CHLD|6) /* stopped child has continued */
#define NSIGCHLD 6
/*
* SIGPOLL si_codes
*/
#define POLL_IN 1 /* data input available */
#define POLL_OUT 2 /* output buffers available */
#define POLL_MSG 3 /* input message available */
#define POLL_ERR 4 /* i/o error */
#define POLL_PRI 5 /* high priority input available */
#define POLL_HUP 6 /* device disconnected */
#define POLL_IN (__SI_POLL|1) /* data input available */
#define POLL_OUT (__SI_POLL|2) /* output buffers available */
#define POLL_MSG (__SI_POLL|3) /* input message available */
#define POLL_ERR (__SI_POLL|4) /* i/o error */
#define POLL_PRI (__SI_POLL|5) /* high priority input available */
#define POLL_HUP (__SI_POLL|6) /* device disconnected */
#define NSIGPOLL 6
#endif
include/asm-s390/signal.h
View file @ e105d28a
......@@ -13,6 +13,7 @@
/* Avoid too many header ordering problems. */
struct siginfo;
struct pt_regs;
#ifdef __KERNEL__
/* Most things should be clean enough to redefine this at will, if care
......
include/asm-s390/sigp.h
View file @ e105d28a
......@@ -59,9 +59,6 @@ typedef enum
typedef enum
{
ec_schedule=0,
ec_restart,
ec_halt,
ec_power_off,
ec_call_function,
ec_bit_last
} ec_bit_sig;
......@@ -129,6 +126,6 @@ signal_processor_ps(__u32 *statusptr, __u32 parameter,
return ccode;
}
#endif __SIGP__
#endif /* __SIGP__ */
include/asm-s390/smp.h
View file @ e105d28a
......@@ -10,6 +10,8 @@
#define __ASM_SMP_H
#include <linux/config.h>
#include <linux/threads.h>
#include <linux/ptrace.h>
#if defined(__KERNEL__) && defined(CONFIG_SMP) && !defined(__ASSEMBLY__)
......@@ -26,7 +28,7 @@ typedef struct
__u16 cpu;
} sigp_info;
extern unsigned long cpu_online_map;
extern volatile unsigned long cpu_online_map;
#define NO_PROC_ID 0xFF /* No processor magic marker */
......@@ -42,7 +44,7 @@ extern unsigned long cpu_online_map;
#define PROC_CHANGE_PENALTY 20 /* Schedule penalty */
#define smp_processor_id() (current->processor)
#define smp_processor_id() (current_thread_info()->cpu)
extern __inline__ int cpu_logical_map(int cpu)
{
......@@ -64,7 +66,5 @@ extern __inline__ __u16 hard_smp_processor_id(void)
#define cpu_logical_map(cpu) (cpu)
void smp_local_timer_interrupt(struct pt_regs * regs);
#endif
#endif
include/asm-s390/spinlock.h
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#ifndef __ASM_S390_SUSPEND_H
#define __ASM_S390_SUSPEND_H
#endif
include/asm-s390/system.h
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include/asm-s390/timex.h
View file @ e105d28a
......@@ -17,13 +17,24 @@
(1000000/CLOCK_TICK_FACTOR) / (CLOCK_TICK_RATE/CLOCK_TICK_FACTOR)) \
<< (SHIFT_SCALE-SHIFT_HZ)) / HZ)
typedef unsigned long cycles_t;
typedef unsigned long long cycles_t;
extern cycles_t cacheflush_time;
static inline cycles_t get_cycles(void)
{
return 0;
cycles_t cycles;
__asm__("stck 0(%0)" : : "a" (&(cycles)) : "memory", "cc");
return cycles >> 2;
}
static inline unsigned long long get_clock (void)
{
unsigned long long clk;
__asm__("stck 0(%0)" : : "a" (&(clk)) : "memory", "cc");
return clk;
}
#endif
include/asm-s390/tlb.h
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include/asm-s390/vtoc.h
View file @ e105d28a
......@@ -18,7 +18,6 @@
#include <asm/dasd.h>
#endif
#define DASD_API_VERSION 0
#define LINE_LENGTH 80
#define VTOC_START_CC 0x0
......
include/asm-s390x/atomic.h
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include/asm-s390x/timex.h
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include/asm-s390x/tlb.h
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include/asm-s390x/tlbflush.h 0 → 100644
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include/asm-s390x/uaccess.h
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include/asm-s390x/unistd.h
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include/asm-s390x/vtoc.h
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