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[S390] cio: Introduce subchannel->private.

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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 committed by Martin Schwidefsky
parent bc698bcf88
commit cd6b4f27b9
12 changed files with 261 additions and 212 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/s390/cio/cio.c
View File

@ -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"
@ -182,33 +183,35 @@ 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);
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);
CIO_TRACE_EVENT (4, dbf_txt);
sprintf(dbf_txt, "ccode:%d", ccode);
CIO_TRACE_EVENT(4, dbf_txt);
switch (ccode) {
case 0:
@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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
View File

@ -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;