[patch 08/47] cio: Introduce subchannel->private.

Martin Schwidefsky
2007-12-20T15:44:44Z

[-- Attachment #1: 107-cio-private.diff --]
[-- Type: text/plain, Size: 26035 bytes --]

From: Cornelia Huck <cornelia.huck@de.ibm.com>

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>
---

drivers/s390/cio/cio.c | 43 ++++++----
drivers/s390/cio/cio.h | 84 +++++++-------------
drivers/s390/cio/css.c | 2
drivers/s390/cio/css.h | 58 --------------
drivers/s390/cio/device.c | 16 +++
drivers/s390/cio/device.h | 2
drivers/s390/cio/device_fsm.c | 13 +--
drivers/s390/cio/device_id.c | 9 +-
drivers/s390/cio/device_pgid.c | 6 +
drivers/s390/cio/device_status.c | 13 +--
drivers/s390/cio/io_sch.h | 161 +++++++++++++++++++++++++++++++++++++++
drivers/s390/cio/ioasm.h | 66 ---------------
12 files changed, 261 insertions(+), 212 deletions(-)

Index: quilt-2.6/drivers/s390/cio/cio.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/cio.c
+++ quilt-2.6/drivers/s390/cio/cio.c
@@ -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, /
{
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
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;
Index: quilt-2.6/drivers/s390/cio/cio.h
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/cio.h
+++ quilt-2.6/drivers/s390/cio/cio.h
@@ -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;
Index: quilt-2.6/drivers/s390/cio/css.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/css.c
+++ quilt-2.6/drivers/s390/cio/css.c
@@ -77,7 +77,7 @@ css_alloc_subchannel(struct subchannel_i
* 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);
Index: quilt-2.6/drivers/s390/cio/css.h
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/css.h
+++ quilt-2.6/drivers/s390/cio/css.h
@@ -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
Index: quilt-2.6/drivers/s390/cio/device.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device.c
+++ quilt-2.6/drivers/s390/cio/device.c
@@ -28,6 +28,7 @@
#include "css.h"
#include "device.h"
#include "ioasm.h"
+#include "io_sch.h"

/******************* bus type handling ***********************/

@@ -1159,10 +1160,16 @@ io_subchannel_probe (struct subchannel *
queue_work(slow_path_wq, &cdev->private->kick_work);
return 0;
}
+ /* Allocate I/O subchannel private data. */
+ sch->private = kzalloc(sizeof(struct io_subchannel_private),
+ GFP_KERNEL | GFP_DMA);
+ if (!sch->private)
+ return -ENOMEM;
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 *
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
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_de
{
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);
Index: quilt-2.6/drivers/s390/cio/device_fsm.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device_fsm.c
+++ quilt-2.6/drivers/s390/cio/device_fsm.c
@@ -96,29 +96,32 @@ static void ccw_timeout_log(struct ccw_d
{
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->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) {
Index: quilt-2.6/drivers/s390/cio/device.h
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device.h
+++ quilt-2.6/drivers/s390/cio/device.h
@@ -5,6 +5,8 @@
#include <asm/atomic.h>
#include <linux/wait.h>

+#include "io_sch.h"
+
/*
* states of the device statemachine
*/
Index: quilt-2.6/drivers/s390/cio/device_id.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device_id.c
+++ quilt-2.6/drivers/s390/cio/device_id.c
@@ -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_dev
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;
Index: quilt-2.6/drivers/s390/cio/device_pgid.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device_pgid.c
+++ quilt-2.6/drivers/s390/cio/device_pgid.c
@@ -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
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);
Index: quilt-2.6/drivers/s390/cio/device_status.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/device_status.c
+++ quilt-2.6/drivers/s390/cio/device_status.c
@@ -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 *c
/*
* 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);
}

/*
Index: quilt-2.6/drivers/s390/cio/ioasm.h
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/ioasm.h
+++ quilt-2.6/drivers/s390/cio/ioasm.h
@@ -109,72 +109,6 @@ static inline int tpi( volatile struct t
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;
Index: quilt-2.6/drivers/s390/cio/io_sch.h
===================================================================
--- /dev/null
+++ quilt-2.6/drivers/s390/cio/io_sch.h
@@ -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