From: Cornelia Huck 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 Signed-off-by: Martin Schwidefsky --- 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 #include +#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 -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/