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[S390] cio: Introduce subchannel->private. 

Introduce a private pointer in struct subchannel to store
per-subchannel type data (cannot use dev->priv since this
is already used for something else).

Create a new header io_sch.h for I/O subchannel specific structures
and instructions.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Cornelia Huck 2008-01-26 14:10:43 +01:00 коммит произвёл Martin Schwidefsky
Родитель bc698bcf88
Коммит cd6b4f27b9
12 изменённых файлов: 261 добавлений и 212 удалений
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35
drivers/s390/cio/cio.c
Просмотреть файл

@ -28,6 +28,7 @@
#include "css.h"
#include "chsc.h"
#include "ioasm.h"
#include "io_sch.h"
#include "blacklist.h"
#include "cio_debug.h"
#include "chp.h"
@ -182,29 +183,31 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */
{
char dbf_txt[15];
int ccode;
struct orb *orb;
CIO_TRACE_EVENT(4, "stIO");
CIO_TRACE_EVENT(4, sch->dev.bus_id);
orb = &to_io_private(sch)->orb;
/* sch is always under 2G. */
sch->orb.intparm = (__u32)(unsigned long)sch;
sch->orb.fmt = 1;
orb->intparm = (u32)(addr_t)sch;
orb->fmt = 1;
sch->orb.pfch = sch->options.prefetch == 0;
sch->orb.spnd = sch->options.suspend;
sch->orb.ssic = sch->options.suspend && sch->options.inter;
sch->orb.lpm = (lpm != 0) ? lpm : sch->lpm;
orb->pfch = sch->options.prefetch == 0;
orb->spnd = sch->options.suspend;
orb->ssic = sch->options.suspend && sch->options.inter;
orb->lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
/*
* for 64 bit we always support 64 bit IDAWs with 4k page size only
*/
sch->orb.c64 = 1;
sch->orb.i2k = 0;
orb->c64 = 1;
orb->i2k = 0;
#endif
sch->orb.key = key >> 4;
orb->key = key >> 4;
/* issue "Start Subchannel" */
sch->orb.cpa = (__u32) __pa (cpa);
ccode = ssch (sch->schid, &sch->orb);
orb->cpa = (__u32) __pa(cpa);
ccode = ssch(sch->schid, orb);
/* process condition code */
sprintf(dbf_txt, "ccode:%d", ccode);
@ -423,7 +426,7 @@ cio_enable_subchannel (struct subchannel *sch, unsigned int isc)
for (retry = 5, ret = 0; retry > 0; retry--) {
sch->schib.pmcw.ena = 1;
sch->schib.pmcw.isc = isc;
sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
sch->schib.pmcw.intparm = (u32)(addr_t)sch;
ret = cio_modify(sch);
if (ret == -ENODEV)
break;
@ -696,8 +699,14 @@ do_IRQ (struct pt_regs *regs)
#ifdef CONFIG_CCW_CONSOLE
static struct subchannel console_subchannel;
static struct io_subchannel_private console_priv;
static int console_subchannel_in_use;
void *cio_get_console_priv(void)
{
return &console_priv;
}
/*
* busy wait for the next interrupt on the console
*/
@ -802,7 +811,7 @@ cio_probe_console(void)
ctl_set_bit(6, 24);
console_subchannel.schib.pmcw.isc = 7;
console_subchannel.schib.pmcw.intparm =
(__u32)(unsigned long)&console_subchannel;
(u32)(addr_t)&console_subchannel;
ret = cio_modify(&console_subchannel);
if (ret) {
console_subchannel_in_use = 0;

84
drivers/s390/cio/cio.h
Просмотреть файл

@ -11,32 +11,32 @@
* path management control word
*/
struct pmcw {
__u32 intparm; /* interruption parameter */
__u32 qf : 1; /* qdio facility */
__u32 res0 : 1; /* reserved zeros */
__u32 isc : 3; /* interruption sublass */
__u32 res5 : 3; /* reserved zeros */
__u32 ena : 1; /* enabled */
__u32 lm : 2; /* limit mode */
__u32 mme : 2; /* measurement-mode enable */
__u32 mp : 1; /* multipath mode */
__u32 tf : 1; /* timing facility */
__u32 dnv : 1; /* device number valid */
__u32 dev : 16; /* device number */
__u8 lpm; /* logical path mask */
__u8 pnom; /* path not operational mask */
__u8 lpum; /* last path used mask */
__u8 pim; /* path installed mask */
__u16 mbi; /* measurement-block index */
__u8 pom; /* path operational mask */
__u8 pam; /* path available mask */
__u8 chpid[8]; /* CHPID 0-7 (if available) */
__u32 unused1 : 8; /* reserved zeros */
__u32 st : 3; /* subchannel type */
__u32 unused2 : 18; /* reserved zeros */
__u32 mbfc : 1; /* measurement block format control */
__u32 xmwme : 1; /* extended measurement word mode enable */
__u32 csense : 1; /* concurrent sense; can be enabled ...*/
u32 intparm; /* interruption parameter */
u32 qf : 1; /* qdio facility */
u32 res0 : 1; /* reserved zeros */
u32 isc : 3; /* interruption sublass */
u32 res5 : 3; /* reserved zeros */
u32 ena : 1; /* enabled */
u32 lm : 2; /* limit mode */
u32 mme : 2; /* measurement-mode enable */
u32 mp : 1; /* multipath mode */
u32 tf : 1; /* timing facility */
u32 dnv : 1; /* device number valid */
u32 dev : 16; /* device number */
u8 lpm; /* logical path mask */
u8 pnom; /* path not operational mask */
u8 lpum; /* last path used mask */
u8 pim; /* path installed mask */
u16 mbi; /* measurement-block index */
u8 pom; /* path operational mask */
u8 pam; /* path available mask */
u8 chpid[8]; /* CHPID 0-7 (if available) */
u32 unused1 : 8; /* reserved zeros */
u32 st : 3; /* subchannel type */
u32 unused2 : 18; /* reserved zeros */
u32 mbfc : 1; /* measurement block format control */
u32 xmwme : 1; /* extended measurement word mode enable */
u32 csense : 1; /* concurrent sense; can be enabled ...*/
/* ... per MSCH, however, if facility */
/* ... is not installed, this results */
/* ... in an operand exception. */
@ -52,31 +52,6 @@ struct schib {
__u8 mda[4]; /* model dependent area */
} __attribute__ ((packed,aligned(4)));
/*
* operation request block
*/
struct orb {
__u32 intparm; /* interruption parameter */
__u32 key : 4; /* flags, like key, suspend control, etc. */
__u32 spnd : 1; /* suspend control */
__u32 res1 : 1; /* reserved */
__u32 mod : 1; /* modification control */
__u32 sync : 1; /* synchronize control */
__u32 fmt : 1; /* format control */
__u32 pfch : 1; /* prefetch control */
__u32 isic : 1; /* initial-status-interruption control */
__u32 alcc : 1; /* address-limit-checking control */
__u32 ssic : 1; /* suppress-suspended-interr. control */
__u32 res2 : 1; /* reserved */
__u32 c64 : 1; /* IDAW/QDIO 64 bit control */
__u32 i2k : 1; /* IDAW 2/4kB block size control */
__u32 lpm : 8; /* logical path mask */
__u32 ils : 1; /* incorrect length */
__u32 zero : 6; /* reserved zeros */
__u32 orbx : 1; /* ORB extension control */
__u32 cpa; /* channel program address */
} __attribute__ ((packed,aligned(4)));
/* subchannel data structure used by I/O subroutines */
struct subchannel {
struct subchannel_id schid;
@ -99,11 +74,10 @@ struct subchannel {
__u8 lpm; /* logical path mask */
__u8 opm; /* operational path mask */
struct schib schib; /* subchannel information block */
struct orb orb; /* operation request block */
struct ccw1 sense_ccw; /* static ccw for sense command */
struct chsc_ssd_info ssd_info; /* subchannel description */
struct device dev; /* entry in device tree */
struct css_driver *driver;
void *private; /* private per subchannel type data */
} __attribute__ ((aligned(8)));
#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */
@ -133,10 +107,12 @@ extern void cio_release_console(void);
extern int cio_is_console(struct subchannel_id);
extern struct subchannel *cio_get_console_subchannel(void);
extern spinlock_t * cio_get_console_lock(void);
extern void *cio_get_console_priv(void);
#else
#define cio_is_console(schid) 0
#define cio_get_console_subchannel() NULL
#define cio_get_console_lock() NULL;
#define cio_get_console_lock() NULL
#define cio_get_console_priv() NULL
#endif
extern int cio_show_msg;

2
drivers/s390/cio/css.c
Просмотреть файл

@ -77,7 +77,7 @@ css_alloc_subchannel(struct subchannel_id schid)
* This is fine even on 64bit since the subchannel is always located
* under 2G.
*/
sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
sch->schib.pmcw.intparm = (u32)(addr_t)sch;
ret = cio_modify(sch);
if (ret) {
kfree(sch->lock);

58
drivers/s390/cio/css.h
Просмотреть файл

@ -58,64 +58,6 @@ struct pgid {
__u32 tod_high; /* high word TOD clock */
} __attribute__ ((packed));
#define MAX_CIWS 8
/*
* sense-id response buffer layout
*/
struct senseid {
/* common part */
__u8 reserved; /* always 0x'FF' */
__u16 cu_type; /* control unit type */
__u8 cu_model; /* control unit model */
__u16 dev_type; /* device type */
__u8 dev_model; /* device model */
__u8 unused; /* padding byte */
/* extended part */
struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
} __attribute__ ((packed,aligned(4)));
struct ccw_device_private {
struct ccw_device *cdev;
struct subchannel *sch;
int state; /* device state */
atomic_t onoff;
unsigned long registered;
struct ccw_dev_id dev_id; /* device id */
struct subchannel_id schid; /* subchannel number */
__u8 imask; /* lpm mask for SNID/SID/SPGID */
int iretry; /* retry counter SNID/SID/SPGID */
struct {
unsigned int fast:1; /* post with "channel end" */
unsigned int repall:1; /* report every interrupt status */
unsigned int pgroup:1; /* do path grouping */
unsigned int force:1; /* allow forced online */
} __attribute__ ((packed)) options;
struct {
unsigned int pgid_single:1; /* use single path for Set PGID */
unsigned int esid:1; /* Ext. SenseID supported by HW */
unsigned int dosense:1; /* delayed SENSE required */
unsigned int doverify:1; /* delayed path verification */
unsigned int donotify:1; /* call notify function */
unsigned int recog_done:1; /* dev. recog. complete */
unsigned int fake_irb:1; /* deliver faked irb */
unsigned int intretry:1; /* retry internal operation */
} __attribute__((packed)) flags;
unsigned long intparm; /* user interruption parameter */
struct qdio_irq *qdio_data;
struct irb irb; /* device status */
struct senseid senseid; /* SenseID info */
struct pgid pgid[8]; /* path group IDs per chpid*/
struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
struct work_struct kick_work;
wait_queue_head_t wait_q;
struct timer_list timer;
void *cmb; /* measurement information */
struct list_head cmb_list; /* list of measured devices */
u64 cmb_start_time; /* clock value of cmb reset */
void *cmb_wait; /* deferred cmb enable/disable */
};
/*
* A css driver handles all subchannels of one type.
* Currently, we only care about I/O subchannels (type 0), these

16
drivers/s390/cio/device.c
Просмотреть файл

@ -28,6 +28,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
#include "io_sch.h"
/******************* bus type handling ***********************/
@ -1143,6 +1144,11 @@ io_subchannel_probe (struct subchannel *sch)
*/
dev_id.devno = sch->schib.pmcw.dev;
dev_id.ssid = sch->schid.ssid;
/* Allocate I/O subchannel private data. */
sch->private = kzalloc(sizeof(struct io_subchannel_private),
GFP_KERNEL | GFP_DMA);
if (!sch->private)
return -ENOMEM;
cdev = get_disc_ccwdev_by_dev_id(&dev_id, NULL);
if (!cdev)
cdev = get_orphaned_ccwdev_by_dev_id(to_css(sch->dev.parent),
@ -1160,9 +1166,10 @@ io_subchannel_probe (struct subchannel *sch)
return 0;
}
cdev = io_subchannel_create_ccwdev(sch);
if (IS_ERR(cdev))
if (IS_ERR(cdev)) {
kfree(sch->private);
return PTR_ERR(cdev);
}
rc = io_subchannel_recog(cdev, sch);
if (rc) {
spin_lock_irqsave(sch->lock, flags);
@ -1170,6 +1177,7 @@ io_subchannel_probe (struct subchannel *sch)
spin_unlock_irqrestore(sch->lock, flags);
if (cdev->dev.release)
cdev->dev.release(&cdev->dev);
kfree(sch->private);
}
return rc;
@ -1191,6 +1199,7 @@ io_subchannel_remove (struct subchannel *sch)
spin_unlock_irqrestore(cdev->ccwlock, flags);
ccw_device_unregister(cdev);
put_device(&cdev->dev);
kfree(sch->private);
return 0;
}
@ -1279,6 +1288,9 @@ ccw_device_console_enable (struct ccw_device *cdev, struct subchannel *sch)
{
int rc;
/* Attach subchannel private data. */
sch->private = cio_get_console_priv();
memset(sch->private, 0, sizeof(struct io_subchannel_private));
/* Initialize the ccw_device structure. */
cdev->dev.parent= &sch->dev;
rc = io_subchannel_recog(cdev, sch);

2
drivers/s390/cio/device.h
Просмотреть файл

@ -5,6 +5,8 @@
#include <asm/atomic.h>
#include <linux/wait.h>
#include "io_sch.h"
/*
* states of the device statemachine
*/

13
drivers/s390/cio/device_fsm.c
Просмотреть файл

@ -96,29 +96,32 @@ static void ccw_timeout_log(struct ccw_device *cdev)
{
struct schib schib;
struct subchannel *sch;
struct io_subchannel_private *private;
int cc;
sch = to_subchannel(cdev->dev.parent);
private = to_io_private(sch);
cc = stsch(sch->schid, &schib);
printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, "
"device information:\n", get_clock());
printk(KERN_WARNING "cio: orb:\n");
print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
&sch->orb, sizeof(sch->orb), 0);
&private->orb, sizeof(private->orb), 0);
printk(KERN_WARNING "cio: ccw device bus id: %s\n", cdev->dev.bus_id);
printk(KERN_WARNING "cio: subchannel bus id: %s\n", sch->dev.bus_id);
printk(KERN_WARNING "cio: subchannel lpm: %02x, opm: %02x, "
"vpm: %02x\n", sch->lpm, sch->opm, sch->vpm);
if ((void *)(addr_t)sch->orb.cpa == &sch->sense_ccw ||
(void *)(addr_t)sch->orb.cpa == cdev->private->iccws)
if ((void *)(addr_t)private->orb.cpa == &private->sense_ccw ||
(void *)(addr_t)private->orb.cpa == cdev->private->iccws)
printk(KERN_WARNING "cio: last channel program (intern):\n");
else
printk(KERN_WARNING "cio: last channel program:\n");
print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1,
(void *)(addr_t)sch->orb.cpa, sizeof(struct ccw1), 0);
(void *)(addr_t)private->orb.cpa,
sizeof(struct ccw1), 0);
printk(KERN_WARNING "cio: ccw device state: %d\n",
cdev->private->state);
printk(KERN_WARNING "cio: store subchannel returned: cc=%d\n", cc);
@ -1078,7 +1081,7 @@ device_trigger_reprobe(struct subchannel *sch)
sch->schib.pmcw.ena = 0;
if ((sch->lpm & (sch->lpm - 1)) != 0)
sch->schib.pmcw.mp = 1;
sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
sch->schib.pmcw.intparm = (u32)(addr_t)sch;
/* We should also udate ssd info, but this has to wait. */
/* Check if this is another device which appeared on the same sch. */
if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) {

9
drivers/s390/cio/device_id.c
Просмотреть файл

@ -24,6 +24,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
#include "io_sch.h"
/*
* Input :
@ -219,11 +220,13 @@ ccw_device_check_sense_id(struct ccw_device *cdev)
return -EAGAIN;
}
if (irb->scsw.cc == 3) {
if ((sch->orb.lpm &
sch->schib.pmcw.pim & sch->schib.pmcw.pam) != 0)
u8 lpm;
lpm = to_io_private(sch)->orb.lpm;
if ((lpm & sch->schib.pmcw.pim & sch->schib.pmcw.pam) != 0)
CIO_MSG_EVENT(2, "SenseID : path %02X for device %04x "
"on subchannel 0.%x.%04x is "
"'not operational'\n", sch->orb.lpm,
"'not operational'\n", lpm,
cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
return -EACCES;

6
drivers/s390/cio/device_pgid.c
Просмотреть файл

@ -22,6 +22,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
#include "io_sch.h"
/*
* Helper function called from interrupt context to decide whether an
@ -155,10 +156,13 @@ __ccw_device_check_sense_pgid(struct ccw_device *cdev)
return -EAGAIN;
}
if (irb->scsw.cc == 3) {
u8 lpm;
lpm = to_io_private(sch)->orb.lpm;
CIO_MSG_EVENT(2, "SNID - Device %04x on Subchannel 0.%x.%04x,"
" lpm %02X, became 'not operational'\n",
cdev->private->dev_id.devno, sch->schid.ssid,
sch->schid.sch_no, sch->orb.lpm);
sch->schid.sch_no, lpm);
return -EACCES;
}
i = 8 - ffs(cdev->private->imask);

13
drivers/s390/cio/device_status.c
Просмотреть файл

@ -20,6 +20,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
#include "io_sch.h"
/*
* Check for any kind of channel or interface control check but don't
@ -310,6 +311,7 @@ int
ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb)
{
struct subchannel *sch;
struct ccw1 *sense_ccw;
sch = to_subchannel(cdev->dev.parent);
@ -326,15 +328,16 @@ ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb)
/*
* We have ending status but no sense information. Do a basic sense.
*/
sch->sense_ccw.cmd_code = CCW_CMD_BASIC_SENSE;
sch->sense_ccw.cda = (__u32) __pa(cdev->private->irb.ecw);
sch->sense_ccw.count = SENSE_MAX_COUNT;
sch->sense_ccw.flags = CCW_FLAG_SLI;
sense_ccw = &to_io_private(sch)->sense_ccw;
sense_ccw->cmd_code = CCW_CMD_BASIC_SENSE;
sense_ccw->cda = (__u32) __pa(cdev->private->irb.ecw);
sense_ccw->count = SENSE_MAX_COUNT;
sense_ccw->flags = CCW_FLAG_SLI;
/* Reset internal retry indication. */
cdev->private->flags.intretry = 0;
return cio_start (sch, &sch->sense_ccw, 0xff);
return cio_start(sch, sense_ccw, 0xff);
}
/*

161
drivers/s390/cio/io_sch.h Normal file
Просмотреть файл

@ -0,0 +1,161 @@
#ifndef S390_IO_SCH_H
#define S390_IO_SCH_H
#include "schid.h"
/*
* operation request block
*/
struct orb {
u32 intparm; /* interruption parameter */
u32 key : 4; /* flags, like key, suspend control, etc. */
u32 spnd : 1; /* suspend control */
u32 res1 : 1; /* reserved */
u32 mod : 1; /* modification control */
u32 sync : 1; /* synchronize control */
u32 fmt : 1; /* format control */
u32 pfch : 1; /* prefetch control */
u32 isic : 1; /* initial-status-interruption control */
u32 alcc : 1; /* address-limit-checking control */
u32 ssic : 1; /* suppress-suspended-interr. control */
u32 res2 : 1; /* reserved */
u32 c64 : 1; /* IDAW/QDIO 64 bit control */
u32 i2k : 1; /* IDAW 2/4kB block size control */
u32 lpm : 8; /* logical path mask */
u32 ils : 1; /* incorrect length */
u32 zero : 6; /* reserved zeros */
u32 orbx : 1; /* ORB extension control */
u32 cpa; /* channel program address */
} __attribute__ ((packed, aligned(4)));
struct io_subchannel_private {
struct orb orb; /* operation request block */
struct ccw1 sense_ccw; /* static ccw for sense command */
} __attribute__ ((aligned(8)));
#define to_io_private(n) ((struct io_subchannel_private *)n->private)
#define MAX_CIWS 8
/*
* sense-id response buffer layout
*/
struct senseid {
/* common part */
u8 reserved; /* always 0x'FF' */
u16 cu_type; /* control unit type */
u8 cu_model; /* control unit model */
u16 dev_type; /* device type */
u8 dev_model; /* device model */
u8 unused; /* padding byte */
/* extended part */
struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
} __attribute__ ((packed, aligned(4)));
struct ccw_device_private {
struct ccw_device *cdev;
struct subchannel *sch;
int state; /* device state */
atomic_t onoff;
unsigned long registered;
struct ccw_dev_id dev_id; /* device id */
struct subchannel_id schid; /* subchannel number */
u8 imask; /* lpm mask for SNID/SID/SPGID */
int iretry; /* retry counter SNID/SID/SPGID */
struct {
unsigned int fast:1; /* post with "channel end" */
unsigned int repall:1; /* report every interrupt status */
unsigned int pgroup:1; /* do path grouping */
unsigned int force:1; /* allow forced online */
} __attribute__ ((packed)) options;
struct {
unsigned int pgid_single:1; /* use single path for Set PGID */
unsigned int esid:1; /* Ext. SenseID supported by HW */
unsigned int dosense:1; /* delayed SENSE required */
unsigned int doverify:1; /* delayed path verification */
unsigned int donotify:1; /* call notify function */
unsigned int recog_done:1; /* dev. recog. complete */
unsigned int fake_irb:1; /* deliver faked irb */
unsigned int intretry:1; /* retry internal operation */
} __attribute__((packed)) flags;
unsigned long intparm; /* user interruption parameter */
struct qdio_irq *qdio_data;
struct irb irb; /* device status */
struct senseid senseid; /* SenseID info */
struct pgid pgid[8]; /* path group IDs per chpid*/
struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
struct work_struct kick_work;
wait_queue_head_t wait_q;
struct timer_list timer;
void *cmb; /* measurement information */
struct list_head cmb_list; /* list of measured devices */
u64 cmb_start_time; /* clock value of cmb reset */
void *cmb_wait; /* deferred cmb enable/disable */
};
static inline int ssch(struct subchannel_id schid, volatile struct orb *addr)
{
register struct subchannel_id reg1 asm("1") = schid;
int ccode;
asm volatile(
" ssch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int rsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm("1") = schid;
int ccode;
asm volatile(
" rsch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
static inline int csch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm("1") = schid;
int ccode;
asm volatile(
" csch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
static inline int hsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm("1") = schid;
int ccode;
asm volatile(
" hsch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
static inline int xsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm("1") = schid;
int ccode;
asm volatile(
" .insn rre,0xb2760000,%1,0\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
#endif

66
drivers/s390/cio/ioasm.h
Просмотреть файл

@ -109,72 +109,6 @@ static inline int tpi( volatile struct tpi_info *addr)
return ccode;
}
static inline int ssch(struct subchannel_id schid,
volatile struct orb *addr)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" ssch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int rsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" rsch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
static inline int csch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" csch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
static inline int hsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" hsch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
static inline int xsch(struct subchannel_id schid)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" .insn rre,0xb2760000,%1,0\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
static inline int chsc(void *chsc_area)
{
typedef struct { char _[4096]; } addr_type;