X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Fpc-bios%2Fs390-ccw%2Fcio.h;fp=qemu%2Fpc-bios%2Fs390-ccw%2Fcio.h;h=f5b4549ea3d86f16a7f2e0b850cba25d452f4693;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/pc-bios/s390-ccw/cio.h b/qemu/pc-bios/s390-ccw/cio.h new file mode 100644 index 000000000..f5b4549ea --- /dev/null +++ b/qemu/pc-bios/s390-ccw/cio.h @@ -0,0 +1,342 @@ +/* + * Channel IO definitions + * + * Copyright (c) 2013 Alexander Graf + * + * Inspired by various s390 headers in Linux 3.9. + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#ifndef CIO_H +#define CIO_H + +/* + * path management control word + */ +struct pmcw { + __u32 intparm; /* interruption parameter */ + __u32 qf : 1; /* qdio facility */ + __u32 w : 1; + __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. */ +} __attribute__ ((packed)); + +/* Target SCHIB configuration. */ +struct schib_config { + __u64 mba; + __u32 intparm; + __u16 mbi; + __u32 isc:3; + __u32 ena:1; + __u32 mme:2; + __u32 mp:1; + __u32 csense:1; + __u32 mbfc:1; +} __attribute__ ((packed)); + +struct scsw { + __u16 flags; + __u16 ctrl; + __u32 cpa; + __u8 dstat; + __u8 cstat; + __u16 count; +} __attribute__ ((packed)); + +#define SCSW_FCTL_CLEAR_FUNC 0x1000 +#define SCSW_FCTL_HALT_FUNC 0x2000 +#define SCSW_FCTL_START_FUNC 0x4000 + +/* + * subchannel information block + */ +struct schib { + struct pmcw pmcw; /* path management control word */ + struct scsw scsw; /* subchannel status word */ + __u64 mba; /* measurement block address */ + __u8 mda[4]; /* model dependent area */ +} __attribute__ ((packed,aligned(4))); + +struct subchannel_id { + __u32 cssid : 8; + __u32 : 4; + __u32 m : 1; + __u32 ssid : 2; + __u32 one : 1; + __u32 sch_no : 16; +} __attribute__ ((packed, aligned(4))); + +struct chsc_header { + __u16 length; + __u16 code; +} __attribute__((packed)); + +struct chsc_area_sda { + struct chsc_header request; + __u8 reserved1:4; + __u8 format:4; + __u8 reserved2; + __u16 operation_code; + __u32 reserved3; + __u32 reserved4; + __u32 operation_data_area[252]; + struct chsc_header response; + __u32 reserved5:4; + __u32 format2:4; + __u32 reserved6:24; +} __attribute__((packed)); + +/* + * TPI info structure + */ +struct tpi_info { + struct subchannel_id schid; + __u32 intparm; /* interruption parameter */ + __u32 adapter_IO : 1; + __u32 reserved2 : 1; + __u32 isc : 3; + __u32 reserved3 : 12; + __u32 int_type : 3; + __u32 reserved4 : 12; +} __attribute__ ((packed)); + +/* channel command word (type 1) */ +struct ccw1 { + __u8 cmd_code; + __u8 flags; + __u16 count; + __u32 cda; +} __attribute__ ((packed)); + +#define CCW_FLAG_DC 0x80 +#define CCW_FLAG_CC 0x40 +#define CCW_FLAG_SLI 0x20 +#define CCW_FLAG_SKIP 0x10 +#define CCW_FLAG_PCI 0x08 +#define CCW_FLAG_IDA 0x04 +#define CCW_FLAG_SUSPEND 0x02 + +#define CCW_CMD_NOOP 0x03 +#define CCW_CMD_BASIC_SENSE 0x04 +#define CCW_CMD_TIC 0x08 +#define CCW_CMD_SENSE_ID 0xe4 + +#define CCW_CMD_SET_VQ 0x13 +#define CCW_CMD_VDEV_RESET 0x33 +#define CCW_CMD_READ_FEAT 0x12 +#define CCW_CMD_WRITE_FEAT 0x11 +#define CCW_CMD_READ_CONF 0x22 +#define CCW_CMD_WRITE_CONF 0x21 +#define CCW_CMD_WRITE_STATUS 0x31 +#define CCW_CMD_SET_IND 0x43 +#define CCW_CMD_SET_CONF_IND 0x53 +#define CCW_CMD_READ_VQ_CONF 0x32 + +/* + * Command-mode operation request block + */ +struct cmd_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 ciw { + __u8 type; + __u8 command; + __u16 count; +}; + +/* + * 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[62]; +} __attribute__ ((packed, aligned(4))); + +/* interruption response block */ +struct irb { + struct scsw scsw; + __u32 esw[5]; + __u32 ecw[8]; + __u32 emw[8]; +} __attribute__ ((packed, aligned(4))); + +/* + * Some S390 specific IO instructions as inline + */ + +static inline int stsch_err(struct subchannel_id schid, struct schib *addr) +{ + register struct subchannel_id reg1 asm ("1") = schid; + int ccode = -EIO; + + asm volatile( + " stsch 0(%3)\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + : "+d" (ccode), "=m" (*addr) + : "d" (reg1), "a" (addr) + : "cc"); + return ccode; +} + +static inline int msch(struct subchannel_id schid, struct schib *addr) +{ + register struct subchannel_id reg1 asm ("1") = schid; + int ccode; + + asm volatile( + " msch 0(%2)\n" + " ipm %0\n" + " srl %0,28" + : "=d" (ccode) + : "d" (reg1), "a" (addr), "m" (*addr) + : "cc"); + return ccode; +} + +static inline int msch_err(struct subchannel_id schid, struct schib *addr) +{ + register struct subchannel_id reg1 asm ("1") = schid; + int ccode = -EIO; + + asm volatile( + " msch 0(%2)\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + : "+d" (ccode) + : "d" (reg1), "a" (addr), "m" (*addr) + : "cc"); + return ccode; +} + +static inline int tsch(struct subchannel_id schid, struct irb *addr) +{ + register struct subchannel_id reg1 asm ("1") = schid; + int ccode; + + asm volatile( + " tsch 0(%3)\n" + " ipm %0\n" + " srl %0,28" + : "=d" (ccode), "=m" (*addr) + : "d" (reg1), "a" (addr) + : "cc"); + return ccode; +} + +static inline int ssch(struct subchannel_id schid, struct cmd_orb *addr) +{ + register struct subchannel_id reg1 asm("1") = schid; + int ccode = -EIO; + + asm volatile( + " ssch 0(%2)\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + : "+d" (ccode) + : "d" (reg1), "a" (addr), "m" (*addr) + : "cc", "memory"); + 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 tpi(struct tpi_info *addr) +{ + int ccode; + + asm volatile( + " tpi 0(%2)\n" + " ipm %0\n" + " srl %0,28" + : "=d" (ccode), "=m" (*addr) + : "a" (addr) + : "cc"); + return ccode; +} + +static inline int chsc(void *chsc_area) +{ + typedef struct { char _[4096]; } addr_type; + int cc; + + asm volatile( + " .insn rre,0xb25f0000,%2,0\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (cc), "=m" (*(addr_type *) chsc_area) + : "d" (chsc_area), "m" (*(addr_type *) chsc_area) + : "cc"); + return cc; +} + +#endif /* CIO_H */