[S390] move include/asm-s390 to arch/s390/include/asm

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 514 insertions, 0 deletions

diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h
new file mode 100644
index 000000000000..6dccb071aec3
--- /dev/null
+++ b/arch/s390/include/asm/cio.h
@@ -0,0 +1,514 @@
+/*
+ *  include/asm-s390/cio.h
+ *  include/asm-s390x/cio.h
+ *
+ * Common interface for I/O on S/390
+ */
+#ifndef _ASM_S390_CIO_H_
+#define _ASM_S390_CIO_H_
+
+#include <linux/spinlock.h>
+#include <asm/types.h>
+
+#ifdef __KERNEL__
+
+#define LPM_ANYPATH 0xff
+#define __MAX_CSSID 0
+
+/**
+ * struct cmd_scsw - command-mode subchannel status word
+ * @key: subchannel key
+ * @sctl: suspend control
+ * @eswf: esw format
+ * @cc: deferred condition code
+ * @fmt: format
+ * @pfch: prefetch
+ * @isic: initial-status interruption control
+ * @alcc: address-limit checking control
+ * @ssi: suppress-suspended interruption
+ * @zcc: zero condition code
+ * @ectl: extended control
+ * @pno: path not operational
+ * @res: reserved
+ * @fctl: function control
+ * @actl: activity control
+ * @stctl: status control
+ * @cpa: channel program address
+ * @dstat: device status
+ * @cstat: subchannel status
+ * @count: residual count
+ */
+struct cmd_scsw {
+        __u32 key  : 4;
+        __u32 sctl : 1;
+        __u32 eswf : 1;
+        __u32 cc   : 2;
+        __u32 fmt  : 1;
+        __u32 pfch : 1;
+        __u32 isic : 1;
+        __u32 alcc : 1;
+        __u32 ssi  : 1;
+        __u32 zcc  : 1;
+        __u32 ectl : 1;
+        __u32 pno  : 1;
+        __u32 res  : 1;
+        __u32 fctl : 3;
+        __u32 actl : 7;
+        __u32 stctl : 5;
+        __u32 cpa;
+        __u32 dstat : 8;
+        __u32 cstat : 8;
+        __u32 count : 16;
+} __attribute__ ((packed));
+
+/**
+ * struct tm_scsw - transport-mode subchannel status word
+ * @key: subchannel key
+ * @eswf: esw format
+ * @cc: deferred condition code
+ * @fmt: format
+ * @x: IRB-format control
+ * @q: interrogate-complete
+ * @ectl: extended control
+ * @pno: path not operational
+ * @fctl: function control
+ * @actl: activity control
+ * @stctl: status control
+ * @tcw: TCW address
+ * @dstat: device status
+ * @cstat: subchannel status
+ * @fcxs: FCX status
+ * @schxs: subchannel-extended status
+ */
+struct tm_scsw {
+        u32 key:4;
+        u32 :1;
+        u32 eswf:1;
+        u32 cc:2;
+        u32 fmt:3;
+        u32 x:1;
+        u32 q:1;
+        u32 :1;
+        u32 ectl:1;
+        u32 pno:1;
+        u32 :1;
+        u32 fctl:3;
+        u32 actl:7;
+        u32 stctl:5;
+        u32 tcw;
+        u32 dstat:8;
+        u32 cstat:8;
+        u32 fcxs:8;
+        u32 schxs:8;
+} __attribute__ ((packed));
+
+/**
+ * union scsw - subchannel status word
+ * @cmd: command-mode SCSW
+ * @tm: transport-mode SCSW
+ */
+union scsw {
+        struct cmd_scsw cmd;
+        struct tm_scsw tm;
+} __attribute__ ((packed));
+
+int scsw_is_tm(union scsw *scsw);
+u32 scsw_key(union scsw *scsw);
+u32 scsw_eswf(union scsw *scsw);
+u32 scsw_cc(union scsw *scsw);
+u32 scsw_ectl(union scsw *scsw);
+u32 scsw_pno(union scsw *scsw);
+u32 scsw_fctl(union scsw *scsw);
+u32 scsw_actl(union scsw *scsw);
+u32 scsw_stctl(union scsw *scsw);
+u32 scsw_dstat(union scsw *scsw);
+u32 scsw_cstat(union scsw *scsw);
+int scsw_is_solicited(union scsw *scsw);
+int scsw_is_valid_key(union scsw *scsw);
+int scsw_is_valid_eswf(union scsw *scsw);
+int scsw_is_valid_cc(union scsw *scsw);
+int scsw_is_valid_ectl(union scsw *scsw);
+int scsw_is_valid_pno(union scsw *scsw);
+int scsw_is_valid_fctl(union scsw *scsw);
+int scsw_is_valid_actl(union scsw *scsw);
+int scsw_is_valid_stctl(union scsw *scsw);
+int scsw_is_valid_dstat(union scsw *scsw);
+int scsw_is_valid_cstat(union scsw *scsw);
+int scsw_cmd_is_valid_key(union scsw *scsw);
+int scsw_cmd_is_valid_sctl(union scsw *scsw);
+int scsw_cmd_is_valid_eswf(union scsw *scsw);
+int scsw_cmd_is_valid_cc(union scsw *scsw);
+int scsw_cmd_is_valid_fmt(union scsw *scsw);
+int scsw_cmd_is_valid_pfch(union scsw *scsw);
+int scsw_cmd_is_valid_isic(union scsw *scsw);
+int scsw_cmd_is_valid_alcc(union scsw *scsw);
+int scsw_cmd_is_valid_ssi(union scsw *scsw);
+int scsw_cmd_is_valid_zcc(union scsw *scsw);
+int scsw_cmd_is_valid_ectl(union scsw *scsw);
+int scsw_cmd_is_valid_pno(union scsw *scsw);
+int scsw_cmd_is_valid_fctl(union scsw *scsw);
+int scsw_cmd_is_valid_actl(union scsw *scsw);
+int scsw_cmd_is_valid_stctl(union scsw *scsw);
+int scsw_cmd_is_valid_dstat(union scsw *scsw);
+int scsw_cmd_is_valid_cstat(union scsw *scsw);
+int scsw_cmd_is_solicited(union scsw *scsw);
+int scsw_tm_is_valid_key(union scsw *scsw);
+int scsw_tm_is_valid_eswf(union scsw *scsw);
+int scsw_tm_is_valid_cc(union scsw *scsw);
+int scsw_tm_is_valid_fmt(union scsw *scsw);
+int scsw_tm_is_valid_x(union scsw *scsw);
+int scsw_tm_is_valid_q(union scsw *scsw);
+int scsw_tm_is_valid_ectl(union scsw *scsw);
+int scsw_tm_is_valid_pno(union scsw *scsw);
+int scsw_tm_is_valid_fctl(union scsw *scsw);
+int scsw_tm_is_valid_actl(union scsw *scsw);
+int scsw_tm_is_valid_stctl(union scsw *scsw);
+int scsw_tm_is_valid_dstat(union scsw *scsw);
+int scsw_tm_is_valid_cstat(union scsw *scsw);
+int scsw_tm_is_valid_fcxs(union scsw *scsw);
+int scsw_tm_is_valid_schxs(union scsw *scsw);
+int scsw_tm_is_solicited(union scsw *scsw);
+
+#define SCSW_FCTL_CLEAR_FUNC     0x1
+#define SCSW_FCTL_HALT_FUNC      0x2
+#define SCSW_FCTL_START_FUNC     0x4
+
+#define SCSW_ACTL_SUSPENDED      0x1
+#define SCSW_ACTL_DEVACT         0x2
+#define SCSW_ACTL_SCHACT         0x4
+#define SCSW_ACTL_CLEAR_PEND     0x8
+#define SCSW_ACTL_HALT_PEND      0x10
+#define SCSW_ACTL_START_PEND     0x20
+#define SCSW_ACTL_RESUME_PEND    0x40
+
+#define SCSW_STCTL_STATUS_PEND   0x1
+#define SCSW_STCTL_SEC_STATUS    0x2
+#define SCSW_STCTL_PRIM_STATUS   0x4
+#define SCSW_STCTL_INTER_STATUS  0x8
+#define SCSW_STCTL_ALERT_STATUS  0x10
+
+#define DEV_STAT_ATTENTION       0x80
+#define DEV_STAT_STAT_MOD        0x40
+#define DEV_STAT_CU_END          0x20
+#define DEV_STAT_BUSY            0x10
+#define DEV_STAT_CHN_END         0x08
+#define DEV_STAT_DEV_END         0x04
+#define DEV_STAT_UNIT_CHECK      0x02
+#define DEV_STAT_UNIT_EXCEP      0x01
+
+#define SCHN_STAT_PCI            0x80
+#define SCHN_STAT_INCORR_LEN     0x40
+#define SCHN_STAT_PROG_CHECK     0x20
+#define SCHN_STAT_PROT_CHECK     0x10
+#define SCHN_STAT_CHN_DATA_CHK   0x08
+#define SCHN_STAT_CHN_CTRL_CHK   0x04
+#define SCHN_STAT_INTF_CTRL_CHK  0x02
+#define SCHN_STAT_CHAIN_CHECK    0x01
+
+/*
+ * architectured values for first sense byte
+ */
+#define SNS0_CMD_REJECT         0x80
+#define SNS_CMD_REJECT          SNS0_CMD_REJEC
+#define SNS0_INTERVENTION_REQ   0x40
+#define SNS0_BUS_OUT_CHECK      0x20
+#define SNS0_EQUIPMENT_CHECK    0x10
+#define SNS0_DATA_CHECK         0x08
+#define SNS0_OVERRUN            0x04
+#define SNS0_INCOMPL_DOMAIN     0x01
+
+/*
+ * architectured values for second sense byte
+ */
+#define SNS1_PERM_ERR           0x80
+#define SNS1_INV_TRACK_FORMAT   0x40
+#define SNS1_EOC                0x20
+#define SNS1_MESSAGE_TO_OPER    0x10
+#define SNS1_NO_REC_FOUND       0x08
+#define SNS1_FILE_PROTECTED     0x04
+#define SNS1_WRITE_INHIBITED    0x02
+#define SNS1_INPRECISE_END      0x01
+
+/*
+ * architectured values for third sense byte
+ */
+#define SNS2_REQ_INH_WRITE      0x80
+#define SNS2_CORRECTABLE        0x40
+#define SNS2_FIRST_LOG_ERR      0x20
+#define SNS2_ENV_DATA_PRESENT   0x10
+#define SNS2_INPRECISE_END      0x04
+
+/**
+ * struct ccw1 - channel command word
+ * @cmd_code: command code
+ * @flags: flags, like IDA adressing, etc.
+ * @count: byte count
+ * @cda: data address
+ *
+ * The ccw is the basic structure to build channel programs that perform
+ * operations with the device or the control unit. Only Format-1 channel
+ * command words are supported.
+ */
+struct ccw1 {
+        __u8  cmd_code;
+        __u8  flags;
+        __u16 count;
+        __u32 cda;
+} __attribute__ ((packed,aligned(8)));
+
+#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_READ_IPL        0x02
+#define CCW_CMD_NOOP            0x03
+#define CCW_CMD_BASIC_SENSE     0x04
+#define CCW_CMD_TIC             0x08
+#define CCW_CMD_STLCK           0x14
+#define CCW_CMD_SENSE_PGID      0x34
+#define CCW_CMD_SUSPEND_RECONN  0x5B
+#define CCW_CMD_RDC             0x64
+#define CCW_CMD_RELEASE         0x94
+#define CCW_CMD_SET_PGID        0xAF
+#define CCW_CMD_SENSE_ID        0xE4
+#define CCW_CMD_DCTL            0xF3
+
+#define SENSE_MAX_COUNT         0x20
+
+/**
+ * struct erw - extended report word
+ * @res0: reserved
+ * @auth: authorization check
+ * @pvrf: path-verification-required flag
+ * @cpt: channel-path timeout
+ * @fsavf: failing storage address validity flag
+ * @cons: concurrent sense
+ * @scavf: secondary ccw address validity flag
+ * @fsaf: failing storage address format
+ * @scnt: sense count, if @cons == %1
+ * @res16: reserved
+ */
+struct erw {
+        __u32 res0  : 3;
+        __u32 auth  : 1;
+        __u32 pvrf  : 1;
+        __u32 cpt   : 1;
+        __u32 fsavf : 1;
+        __u32 cons  : 1;
+        __u32 scavf : 1;
+        __u32 fsaf  : 1;
+        __u32 scnt  : 6;
+        __u32 res16 : 16;
+} __attribute__ ((packed));
+
+/**
+ * struct sublog - subchannel logout area
+ * @res0: reserved
+ * @esf: extended status flags
+ * @lpum: last path used mask
+ * @arep: ancillary report
+ * @fvf: field-validity flags
+ * @sacc: storage access code
+ * @termc: termination code
+ * @devsc: device-status check
+ * @serr: secondary error
+ * @ioerr: i/o-error alert
+ * @seqc: sequence code
+ */
+struct sublog {
+        __u32 res0  : 1;
+        __u32 esf   : 7;
+        __u32 lpum  : 8;
+        __u32 arep  : 1;
+        __u32 fvf   : 5;
+        __u32 sacc  : 2;
+        __u32 termc : 2;
+        __u32 devsc : 1;
+        __u32 serr  : 1;
+        __u32 ioerr : 1;
+        __u32 seqc  : 3;
+} __attribute__ ((packed));
+
+/**
+ * struct esw0 - Format 0 Extended Status Word (ESW)
+ * @sublog: subchannel logout
+ * @erw: extended report word
+ * @faddr: failing storage address
+ * @saddr: secondary ccw address
+ */
+struct esw0 {
+        struct sublog sublog;
+        struct erw erw;
+        __u32  faddr[2];
+        __u32  saddr;
+} __attribute__ ((packed));
+
+/**
+ * struct esw1 - Format 1 Extended Status Word (ESW)
+ * @zero0: reserved zeros
+ * @lpum: last path used mask
+ * @zero16: reserved zeros
+ * @erw: extended report word
+ * @zeros: three fullwords of zeros
+ */
+struct esw1 {
+        __u8  zero0;
+        __u8  lpum;
+        __u16 zero16;
+        struct erw erw;
+        __u32 zeros[3];
+} __attribute__ ((packed));
+
+/**
+ * struct esw2 - Format 2 Extended Status Word (ESW)
+ * @zero0: reserved zeros
+ * @lpum: last path used mask
+ * @dcti: device-connect-time interval
+ * @erw: extended report word
+ * @zeros: three fullwords of zeros
+ */
+struct esw2 {
+        __u8  zero0;
+        __u8  lpum;
+        __u16 dcti;
+        struct erw erw;
+        __u32 zeros[3];
+} __attribute__ ((packed));
+
+/**
+ * struct esw3 - Format 3 Extended Status Word (ESW)
+ * @zero0: reserved zeros
+ * @lpum: last path used mask
+ * @res: reserved
+ * @erw: extended report word
+ * @zeros: three fullwords of zeros
+ */
+struct esw3 {
+        __u8  zero0;
+        __u8  lpum;
+        __u16 res;
+        struct erw erw;
+        __u32 zeros[3];
+} __attribute__ ((packed));
+
+/**
+ * struct irb - interruption response block
+ * @scsw: subchannel status word
+ * @esw: extened status word, 4 formats
+ * @ecw: extended control word
+ *
+ * The irb that is handed to the device driver when an interrupt occurs. For
+ * solicited interrupts, the common I/O layer already performs checks whether
+ * a field is valid; a field not being valid is always passed as %0.
+ * If a unit check occured, @ecw may contain sense data; this is retrieved
+ * by the common I/O layer itself if the device doesn't support concurrent
+ * sense (so that the device driver never needs to perform basic sene itself).
+ * For unsolicited interrupts, the irb is passed as-is (expect for sense data,
+ * if applicable).
+ */
+struct irb {
+        union scsw scsw;
+        union {
+                struct esw0 esw0;
+                struct esw1 esw1;
+                struct esw2 esw2;
+                struct esw3 esw3;
+        } esw;
+        __u8   ecw[32];
+} __attribute__ ((packed,aligned(4)));
+
+/**
+ * struct ciw - command information word  (CIW) layout
+ * @et: entry type
+ * @reserved: reserved bits
+ * @ct: command type
+ * @cmd: command code
+ * @count: command count
+ */
+struct ciw {
+        __u32 et       :  2;
+        __u32 reserved :  2;
+        __u32 ct       :  4;
+        __u32 cmd      :  8;
+        __u32 count    : 16;
+} __attribute__ ((packed));
+
+#define CIW_TYPE_RCD    0x0     /* read configuration data */
+#define CIW_TYPE_SII    0x1     /* set interface identifier */
+#define CIW_TYPE_RNI    0x2     /* read node identifier */
+
+/*
+ * Flags used as input parameters for do_IO()
+ */
+#define DOIO_ALLOW_SUSPEND       0x0001 /* allow for channel prog. suspend */
+#define DOIO_DENY_PREFETCH       0x0002 /* don't allow for CCW prefetch */
+#define DOIO_SUPPRESS_INTER      0x0004 /* suppress intermediate inter. */
+                                        /* ... for suspended CCWs */
+/* Device or subchannel gone. */
+#define CIO_GONE       0x0001
+/* No path to device. */
+#define CIO_NO_PATH    0x0002
+/* Device has appeared. */
+#define CIO_OPER       0x0004
+/* Sick revalidation of device. */
+#define CIO_REVALIDATE 0x0008
+
+/**
+ * struct ccw_dev_id - unique identifier for ccw devices
+ * @ssid: subchannel set id
+ * @devno: device number
+ *
+ * This structure is not directly based on any hardware structure. The
+ * hardware identifies a device by its device number and its subchannel,
+ * which is in turn identified by its id. In order to get a unique identifier
+ * for ccw devices across subchannel sets, @struct ccw_dev_id has been
+ * introduced.
+ */
+struct ccw_dev_id {
+        u8 ssid;
+        u16 devno;
+};
+
+/**
+ * ccw_device_id_is_equal() - compare two ccw_dev_ids
+ * @dev_id1: a ccw_dev_id
+ * @dev_id2: another ccw_dev_id
+ * Returns:
+ *  %1 if the two structures are equal field-by-field,
+ *  %0 if not.
+ * Context:
+ *  any
+ */
+static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1,
+                                      struct ccw_dev_id *dev_id2)
+{
+        if ((dev_id1->ssid == dev_id2->ssid) &&
+            (dev_id1->devno == dev_id2->devno))
+                return 1;
+        return 0;
+}
+
+extern void wait_cons_dev(void);
+
+extern void css_schedule_reprobe(void);
+
+extern void reipl_ccw_dev(struct ccw_dev_id *id);
+
+struct cio_iplinfo {
+        u16 devno;
+        int is_qdio;
+};
+
+extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo);
+
+/* Function from drivers/s390/cio/chsc.c */
+int chsc_sstpc(void *page, unsigned int op, u16 ctrl);
+int chsc_sstpi(void *page, void *result, size_t size);
+
+#endif
+
+#endif