| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Helper functions for scsw access. |
| * |
| * Copyright IBM Corp. 2008, 2012 |
| * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> |
| */ |
| |
| #ifndef _ASM_S390_SCSW_H_ |
| #define _ASM_S390_SCSW_H_ |
| |
| #include <linux/types.h> |
| #include <asm/css_chars.h> |
| #include <asm/dma-types.h> |
| #include <asm/cio.h> |
| |
| /** |
| * 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; |
| dma32_t 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; |
| dma32_t tcw; |
| u32 dstat:8; |
| u32 cstat:8; |
| u32 fcxs:8; |
| u32 ifob:1; |
| u32 sesq:7; |
| } __attribute__ ((packed)); |
| |
| /** |
| * struct eadm_scsw - subchannel status word for eadm subchannels |
| * @key: subchannel key |
| * @eswf: esw format |
| * @cc: deferred condition code |
| * @ectl: extended control |
| * @fctl: function control |
| * @actl: activity control |
| * @stctl: status control |
| * @aob: AOB address |
| * @dstat: device status |
| * @cstat: subchannel status |
| */ |
| struct eadm_scsw { |
| u32 key:4; |
| u32:1; |
| u32 eswf:1; |
| u32 cc:2; |
| u32:6; |
| u32 ectl:1; |
| u32:2; |
| u32 fctl:3; |
| u32 actl:7; |
| u32 stctl:5; |
| dma32_t aob; |
| u32 dstat:8; |
| u32 cstat:8; |
| u32:16; |
| } __packed; |
| |
| /** |
| * union scsw - subchannel status word |
| * @cmd: command-mode SCSW |
| * @tm: transport-mode SCSW |
| * @eadm: eadm SCSW |
| */ |
| union scsw { |
| struct cmd_scsw cmd; |
| struct tm_scsw tm; |
| struct eadm_scsw eadm; |
| } __packed; |
| |
| #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 |
| |
| #define SCSW_SESQ_DEV_NOFCX 3 |
| #define SCSW_SESQ_PATH_NOFCX 4 |
| |
| /* |
| * 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 |
| |
| /* |
| * architectured values for PPRC errors |
| */ |
| #define SNS7_INVALID_ON_SEC 0x0e |
| |
| /** |
| * scsw_is_tm - check for transport mode scsw |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the specified scsw is a transport mode scsw, zero |
| * otherwise. |
| */ |
| static inline int scsw_is_tm(union scsw *scsw) |
| { |
| return css_general_characteristics.fcx && (scsw->tm.x == 1); |
| } |
| |
| /** |
| * scsw_key - return scsw key field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the key field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_key(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.key; |
| else |
| return scsw->cmd.key; |
| } |
| |
| /** |
| * scsw_eswf - return scsw eswf field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the eswf field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_eswf(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.eswf; |
| else |
| return scsw->cmd.eswf; |
| } |
| |
| /** |
| * scsw_cc - return scsw cc field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the cc field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_cc(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.cc; |
| else |
| return scsw->cmd.cc; |
| } |
| |
| /** |
| * scsw_ectl - return scsw ectl field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the ectl field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_ectl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.ectl; |
| else |
| return scsw->cmd.ectl; |
| } |
| |
| /** |
| * scsw_pno - return scsw pno field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the pno field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_pno(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.pno; |
| else |
| return scsw->cmd.pno; |
| } |
| |
| /** |
| * scsw_fctl - return scsw fctl field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the fctl field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_fctl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.fctl; |
| else |
| return scsw->cmd.fctl; |
| } |
| |
| /** |
| * scsw_actl - return scsw actl field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the actl field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_actl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.actl; |
| else |
| return scsw->cmd.actl; |
| } |
| |
| /** |
| * scsw_stctl - return scsw stctl field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the stctl field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_stctl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.stctl; |
| else |
| return scsw->cmd.stctl; |
| } |
| |
| /** |
| * scsw_dstat - return scsw dstat field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the dstat field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_dstat(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.dstat; |
| else |
| return scsw->cmd.dstat; |
| } |
| |
| /** |
| * scsw_cstat - return scsw cstat field |
| * @scsw: pointer to scsw |
| * |
| * Return the value of the cstat field of the specified scsw, regardless of |
| * whether it is a transport mode or command mode scsw. |
| */ |
| static inline u32 scsw_cstat(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw->tm.cstat; |
| else |
| return scsw->cmd.cstat; |
| } |
| |
| /** |
| * scsw_cmd_is_valid_key - check key field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the key field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_key(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_sctl - check sctl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the sctl field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_sctl(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_eswf - check eswf field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the eswf field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_eswf(union scsw *scsw) |
| { |
| return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_cc - check cc field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the cc field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_cc(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && |
| (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_fmt - check fmt field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the fmt field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_fmt(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_pfch - check pfch field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the pfch field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_pfch(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_isic - check isic field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the isic field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_isic(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_alcc - check alcc field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the alcc field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_alcc(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_ssi - check ssi field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the ssi field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_ssi(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_zcc - check zcc field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the zcc field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_zcc(union scsw *scsw) |
| { |
| return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && |
| (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_ectl - check ectl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the ectl field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_ectl(union scsw *scsw) |
| { |
| /* Must be status pending. */ |
| if (!(scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND)) |
| return 0; |
| |
| /* Must have alert status. */ |
| if (!(scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS)) |
| return 0; |
| |
| /* Must be alone or together with primary, secondary or both, |
| * => no intermediate status. |
| */ |
| if (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) |
| return 0; |
| |
| return 1; |
| } |
| |
| /** |
| * scsw_cmd_is_valid_pno - check pno field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the pno field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_pno(union scsw *scsw) |
| { |
| /* Must indicate at least one I/O function. */ |
| if (!scsw->cmd.fctl) |
| return 0; |
| |
| /* Must be status pending. */ |
| if (!(scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND)) |
| return 0; |
| |
| /* Can be status pending alone, or with any combination of primary, |
| * secondary and alert => no intermediate status. |
| */ |
| if (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS)) |
| return 1; |
| |
| /* If intermediate, must be suspended. */ |
| if (scsw->cmd.actl & SCSW_ACTL_SUSPENDED) |
| return 1; |
| |
| return 0; |
| } |
| |
| /** |
| * scsw_cmd_is_valid_fctl - check fctl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the fctl field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_fctl(union scsw *scsw) |
| { |
| /* Only valid if pmcw.dnv == 1*/ |
| return 1; |
| } |
| |
| /** |
| * scsw_cmd_is_valid_actl - check actl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the actl field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_actl(union scsw *scsw) |
| { |
| /* Only valid if pmcw.dnv == 1*/ |
| return 1; |
| } |
| |
| /** |
| * scsw_cmd_is_valid_stctl - check stctl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the stctl field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_stctl(union scsw *scsw) |
| { |
| /* Only valid if pmcw.dnv == 1*/ |
| return 1; |
| } |
| |
| /** |
| * scsw_cmd_is_valid_dstat - check dstat field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the dstat field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_dstat(union scsw *scsw) |
| { |
| return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && |
| (scsw->cmd.cc != 3); |
| } |
| |
| /** |
| * scsw_cmd_is_valid_cstat - check cstat field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the cstat field of the specified command mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_cmd_is_valid_cstat(union scsw *scsw) |
| { |
| return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && |
| (scsw->cmd.cc != 3); |
| } |
| |
| /** |
| * scsw_tm_is_valid_key - check key field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the key field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_key(union scsw *scsw) |
| { |
| return (scsw->tm.fctl & SCSW_FCTL_START_FUNC); |
| } |
| |
| /** |
| * scsw_tm_is_valid_eswf - check eswf field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the eswf field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_eswf(union scsw *scsw) |
| { |
| return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); |
| } |
| |
| /** |
| * scsw_tm_is_valid_cc - check cc field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the cc field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_cc(union scsw *scsw) |
| { |
| return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) && |
| (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); |
| } |
| |
| /** |
| * scsw_tm_is_valid_fmt - check fmt field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the fmt field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_fmt(union scsw *scsw) |
| { |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_x - check x field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the x field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_x(union scsw *scsw) |
| { |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_q - check q field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the q field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_q(union scsw *scsw) |
| { |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_ectl - check ectl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the ectl field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_ectl(union scsw *scsw) |
| { |
| /* Must be status pending. */ |
| if (!(scsw->tm.stctl & SCSW_STCTL_STATUS_PEND)) |
| return 0; |
| |
| /* Must have alert status. */ |
| if (!(scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS)) |
| return 0; |
| |
| /* Must be alone or together with primary, secondary or both, |
| * => no intermediate status. |
| */ |
| if (scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) |
| return 0; |
| |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_pno - check pno field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the pno field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_pno(union scsw *scsw) |
| { |
| /* Must indicate at least one I/O function. */ |
| if (!scsw->tm.fctl) |
| return 0; |
| |
| /* Must be status pending. */ |
| if (!(scsw->tm.stctl & SCSW_STCTL_STATUS_PEND)) |
| return 0; |
| |
| /* Can be status pending alone, or with any combination of primary, |
| * secondary and alert => no intermediate status. |
| */ |
| if (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS)) |
| return 1; |
| |
| /* If intermediate, must be suspended. */ |
| if (scsw->tm.actl & SCSW_ACTL_SUSPENDED) |
| return 1; |
| |
| return 0; |
| } |
| |
| /** |
| * scsw_tm_is_valid_fctl - check fctl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the fctl field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_fctl(union scsw *scsw) |
| { |
| /* Only valid if pmcw.dnv == 1*/ |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_actl - check actl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the actl field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_actl(union scsw *scsw) |
| { |
| /* Only valid if pmcw.dnv == 1*/ |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_stctl - check stctl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the stctl field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_stctl(union scsw *scsw) |
| { |
| /* Only valid if pmcw.dnv == 1*/ |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_dstat - check dstat field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the dstat field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_dstat(union scsw *scsw) |
| { |
| return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && |
| (scsw->tm.cc != 3); |
| } |
| |
| /** |
| * scsw_tm_is_valid_cstat - check cstat field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the cstat field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_cstat(union scsw *scsw) |
| { |
| return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && |
| (scsw->tm.cc != 3); |
| } |
| |
| /** |
| * scsw_tm_is_valid_fcxs - check fcxs field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the fcxs field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_fcxs(union scsw *scsw) |
| { |
| return 1; |
| } |
| |
| /** |
| * scsw_tm_is_valid_schxs - check schxs field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the schxs field of the specified transport mode scsw is |
| * valid, zero otherwise. |
| */ |
| static inline int scsw_tm_is_valid_schxs(union scsw *scsw) |
| { |
| return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK | |
| SCHN_STAT_INTF_CTRL_CHK | |
| SCHN_STAT_PROT_CHECK | |
| SCHN_STAT_CHN_DATA_CHK)); |
| } |
| |
| /** |
| * scsw_is_valid_actl - check actl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the actl field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_actl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_actl(scsw); |
| else |
| return scsw_cmd_is_valid_actl(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_cc - check cc field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the cc field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_cc(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_cc(scsw); |
| else |
| return scsw_cmd_is_valid_cc(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_cstat - check cstat field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the cstat field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_cstat(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_cstat(scsw); |
| else |
| return scsw_cmd_is_valid_cstat(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_dstat - check dstat field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the dstat field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_dstat(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_dstat(scsw); |
| else |
| return scsw_cmd_is_valid_dstat(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_ectl - check ectl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the ectl field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_ectl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_ectl(scsw); |
| else |
| return scsw_cmd_is_valid_ectl(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_eswf - check eswf field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the eswf field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_eswf(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_eswf(scsw); |
| else |
| return scsw_cmd_is_valid_eswf(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_fctl - check fctl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the fctl field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_fctl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_fctl(scsw); |
| else |
| return scsw_cmd_is_valid_fctl(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_key - check key field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the key field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_key(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_key(scsw); |
| else |
| return scsw_cmd_is_valid_key(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_pno - check pno field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the pno field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_pno(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_pno(scsw); |
| else |
| return scsw_cmd_is_valid_pno(scsw); |
| } |
| |
| /** |
| * scsw_is_valid_stctl - check stctl field validity |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the stctl field of the specified scsw is valid, |
| * regardless of whether it is a transport mode or command mode scsw. |
| * Return zero if the field does not contain a valid value. |
| */ |
| static inline int scsw_is_valid_stctl(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_valid_stctl(scsw); |
| else |
| return scsw_cmd_is_valid_stctl(scsw); |
| } |
| |
| /** |
| * scsw_cmd_is_solicited - check for solicited scsw |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the command mode scsw indicates that the associated |
| * status condition is solicited, zero if it is unsolicited. |
| */ |
| static inline int scsw_cmd_is_solicited(union scsw *scsw) |
| { |
| return (scsw->cmd.cc != 0) || (scsw->cmd.stctl != |
| (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); |
| } |
| |
| /** |
| * scsw_tm_is_solicited - check for solicited scsw |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the transport mode scsw indicates that the associated |
| * status condition is solicited, zero if it is unsolicited. |
| */ |
| static inline int scsw_tm_is_solicited(union scsw *scsw) |
| { |
| return (scsw->tm.cc != 0) || (scsw->tm.stctl != |
| (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); |
| } |
| |
| /** |
| * scsw_is_solicited - check for solicited scsw |
| * @scsw: pointer to scsw |
| * |
| * Return non-zero if the transport or command mode scsw indicates that the |
| * associated status condition is solicited, zero if it is unsolicited. |
| */ |
| static inline int scsw_is_solicited(union scsw *scsw) |
| { |
| if (scsw_is_tm(scsw)) |
| return scsw_tm_is_solicited(scsw); |
| else |
| return scsw_cmd_is_solicited(scsw); |
| } |
| |
| #endif /* _ASM_S390_SCSW_H_ */ |
