343 lines
14 KiB
C
343 lines
14 KiB
C
/*******************************************************
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* Define constants *
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* *
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********************************************************/
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/*-----------------------------------------------------*
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* CCW command codes for CLAW protocol *
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*------------------------------------------------------*/
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#define CCW_CLAW_CMD_WRITE 0x01 /* write - not including link */
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#define CCW_CLAW_CMD_READ 0x02 /* read */
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#define CCW_CLAW_CMD_NOP 0x03 /* NOP */
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#define CCW_CLAW_CMD_SENSE 0x04 /* Sense */
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#define CCW_CLAW_CMD_SIGNAL_SMOD 0x05 /* Signal Status Modifier */
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#define CCW_CLAW_CMD_TIC 0x08 /* TIC */
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#define CCW_CLAW_CMD_READHEADER 0x12 /* read header data */
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#define CCW_CLAW_CMD_READFF 0x22 /* read an FF */
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#define CCW_CLAW_CMD_SENSEID 0xe4 /* Sense ID */
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/*-----------------------------------------------------*
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* CLAW Unique constants *
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*------------------------------------------------------*/
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#define MORE_to_COME_FLAG 0x04 /* OR with write CCW in case of m-t-c */
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#define CLAW_IDLE 0x00 /* flag to indicate CLAW is idle */
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#define CLAW_BUSY 0xff /* flag to indicate CLAW is busy */
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#define CLAW_PENDING 0x00 /* flag to indicate i/o is pending */
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#define CLAW_COMPLETE 0xff /* flag to indicate i/o completed */
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/*-----------------------------------------------------*
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* CLAW control command code *
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*------------------------------------------------------*/
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#define SYSTEM_VALIDATE_REQUEST 0x01 /* System Validate request */
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#define SYSTEM_VALIDATE_RESPONSE 0x02 /* System Validate response */
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#define CONNECTION_REQUEST 0x21 /* Connection request */
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#define CONNECTION_RESPONSE 0x22 /* Connection response */
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#define CONNECTION_CONFIRM 0x23 /* Connection confirm */
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#define DISCONNECT 0x24 /* Disconnect */
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#define CLAW_ERROR 0x41 /* CLAW error message */
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#define CLAW_VERSION_ID 2 /* CLAW version ID */
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/*-----------------------------------------------------*
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* CLAW adater sense bytes *
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*------------------------------------------------------*/
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#define CLAW_ADAPTER_SENSE_BYTE 0x41 /* Stop command issued to adapter */
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/*-----------------------------------------------------*
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* CLAW control command return codes *
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*------------------------------------------------------*/
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#define CLAW_RC_NAME_MISMATCH 166 /* names do not match */
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#define CLAW_RC_WRONG_VERSION 167 /* wrong CLAW version number */
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#define CLAW_RC_HOST_RCV_TOO_SMALL 180 /* Host maximum receive is */
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/* less than Linux on zSeries*/
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/* transmit size */
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/*-----------------------------------------------------*
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* CLAW Constants application name *
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*------------------------------------------------------*/
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#define HOST_APPL_NAME "TCPIP "
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#define WS_APPL_NAME_IP_LINK "TCPIP "
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#define WS_APPL_NAME_IP_NAME "IP "
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#define WS_APPL_NAME_API_LINK "API "
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#define WS_APPL_NAME_PACKED "PACKED "
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#define WS_NAME_NOT_DEF "NOT_DEF "
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#define PACKING_ASK 1
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#define PACK_SEND 2
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#define DO_PACKED 3
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#define MAX_ENVELOPE_SIZE 65536
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#define CLAW_DEFAULT_MTU_SIZE 4096
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#define DEF_PACK_BUFSIZE 32768
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#define READ 0
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#define WRITE 1
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#define TB_TX 0 /* sk buffer handling in process */
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#define TB_STOP 1 /* network device stop in process */
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#define TB_RETRY 2 /* retry in process */
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#define TB_NOBUFFER 3 /* no buffer on free queue */
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#define CLAW_MAX_LINK_ID 1
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#define CLAW_MAX_DEV 256 /* max claw devices */
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#define MAX_NAME_LEN 8 /* host name, adapter name length */
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#define CLAW_FRAME_SIZE 4096
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#define CLAW_ID_SIZE 20+3
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/* state machine codes used in claw_irq_handler */
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#define CLAW_STOP 0
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#define CLAW_START_HALT_IO 1
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#define CLAW_START_SENSEID 2
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#define CLAW_START_READ 3
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#define CLAW_START_WRITE 4
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/*-----------------------------------------------------*
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* Lock flag *
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*------------------------------------------------------*/
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#define LOCK_YES 0
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#define LOCK_NO 1
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/*-----------------------------------------------------*
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* DBF Debug macros *
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*------------------------------------------------------*/
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#define CLAW_DBF_TEXT(level, name, text) \
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do { \
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debug_text_event(claw_dbf_##name, level, text); \
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} while (0)
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#define CLAW_DBF_HEX(level,name,addr,len) \
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do { \
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debug_event(claw_dbf_##name,level,(void*)(addr),len); \
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} while (0)
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/* Allow to sort out low debug levels early to avoid wasted sprints */
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static inline int claw_dbf_passes(debug_info_t *dbf_grp, int level)
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{
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return (level <= dbf_grp->level);
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}
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#define CLAW_DBF_TEXT_(level,name,text...) \
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do { \
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if (claw_dbf_passes(claw_dbf_##name, level)) { \
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sprintf(debug_buffer, text); \
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debug_text_event(claw_dbf_##name, level, \
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debug_buffer); \
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} \
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} while (0)
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/*******************************************************
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* Define Control Blocks *
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* *
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********************************************************/
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/*------------------------------------------------------*/
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/* CLAW header */
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/*------------------------------------------------------*/
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struct clawh {
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__u16 length; /* length of data read by preceding read CCW */
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__u8 opcode; /* equivalent read CCW */
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__u8 flag; /* flag of FF to indicate read was completed */
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};
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/*------------------------------------------------------*/
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/* CLAW Packing header 4 bytes */
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/*------------------------------------------------------*/
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struct clawph {
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__u16 len; /* Length of Packed Data Area */
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__u8 flag; /* Reserved not used */
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__u8 link_num; /* Link ID */
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};
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/*------------------------------------------------------*/
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/* CLAW Ending struct ccwbk */
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/*------------------------------------------------------*/
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struct endccw {
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__u32 real; /* real address of this block */
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__u8 write1; /* write 1 is active */
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__u8 read1; /* read 1 is active */
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__u16 reserved; /* reserved for future use */
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struct ccw1 write1_nop1;
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struct ccw1 write1_nop2;
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struct ccw1 write2_nop1;
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struct ccw1 write2_nop2;
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struct ccw1 read1_nop1;
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struct ccw1 read1_nop2;
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struct ccw1 read2_nop1;
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struct ccw1 read2_nop2;
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};
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/*------------------------------------------------------*/
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/* CLAW struct ccwbk */
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/*------------------------------------------------------*/
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struct ccwbk {
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void *next; /* pointer to next ccw block */
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__u32 real; /* real address of this ccw */
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void *p_buffer; /* virtual address of data */
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struct clawh header; /* claw header */
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struct ccw1 write; /* write CCW */
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struct ccw1 w_read_FF; /* read FF */
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struct ccw1 w_TIC_1; /* TIC */
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struct ccw1 read; /* read CCW */
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struct ccw1 read_h; /* read header */
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struct ccw1 signal; /* signal SMOD */
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struct ccw1 r_TIC_1; /* TIC1 */
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struct ccw1 r_read_FF; /* read FF */
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struct ccw1 r_TIC_2; /* TIC2 */
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};
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/*------------------------------------------------------*/
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/* CLAW control block */
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/*------------------------------------------------------*/
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struct clawctl {
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__u8 command; /* control command */
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__u8 version; /* CLAW protocol version */
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__u8 linkid; /* link ID */
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__u8 correlator; /* correlator */
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__u8 rc; /* return code */
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__u8 reserved1; /* reserved */
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__u8 reserved2; /* reserved */
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__u8 reserved3; /* reserved */
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__u8 data[24]; /* command specific fields */
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};
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/*------------------------------------------------------*/
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/* Data for SYSTEMVALIDATE command */
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/*------------------------------------------------------*/
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struct sysval {
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char WS_name[8]; /* Workstation System name */
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char host_name[8]; /* Host system name */
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__u16 read_frame_size; /* read frame size */
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__u16 write_frame_size; /* write frame size */
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__u8 reserved[4]; /* reserved */
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};
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/*------------------------------------------------------*/
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/* Data for Connect command */
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/*------------------------------------------------------*/
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struct conncmd {
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char WS_name[8]; /* Workstation application name */
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char host_name[8]; /* Host application name */
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__u16 reserved1[2]; /* read frame size */
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__u8 reserved2[4]; /* reserved */
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};
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/*------------------------------------------------------*/
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/* Data for CLAW error */
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/*------------------------------------------------------*/
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struct clawwerror {
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char reserved1[8]; /* reserved */
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char reserved2[8]; /* reserved */
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char reserved3[8]; /* reserved */
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};
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/*------------------------------------------------------*/
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/* Data buffer for CLAW */
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/*------------------------------------------------------*/
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struct clawbuf {
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char buffer[MAX_ENVELOPE_SIZE]; /* data buffer */
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};
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/*------------------------------------------------------*/
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/* Channel control block for read and write channel */
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/*------------------------------------------------------*/
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struct chbk {
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unsigned int devno;
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int irq;
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char id[CLAW_ID_SIZE];
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__u32 IO_active;
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__u8 claw_state;
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struct irb *irb;
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struct ccw_device *cdev; /* pointer to the channel device */
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struct net_device *ndev;
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wait_queue_head_t wait;
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struct tasklet_struct tasklet;
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struct timer_list timer;
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unsigned long flag_a; /* atomic flags */
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#define CLAW_BH_ACTIVE 0
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unsigned long flag_b; /* atomic flags */
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#define CLAW_WRITE_ACTIVE 0
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__u8 last_dstat;
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__u8 flag;
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struct sk_buff_head collect_queue;
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spinlock_t collect_lock;
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#define CLAW_WRITE 0x02 /* - Set if this is a write channel */
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#define CLAW_READ 0x01 /* - Set if this is a read channel */
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#define CLAW_TIMER 0x80 /* - Set if timer made the wake_up */
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};
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/*--------------------------------------------------------------*
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* CLAW environment block *
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*---------------------------------------------------------------*/
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struct claw_env {
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unsigned int devno[2]; /* device number */
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char host_name[9]; /* Host name */
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char adapter_name [9]; /* adapter name */
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char api_type[9]; /* TCPIP, API or PACKED */
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void *p_priv; /* privptr */
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__u16 read_buffers; /* read buffer number */
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__u16 write_buffers; /* write buffer number */
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__u16 read_size; /* read buffer size */
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__u16 write_size; /* write buffer size */
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__u16 dev_id; /* device ident */
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__u8 packing; /* are we packing? */
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__u8 in_use; /* device active flag */
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struct net_device *ndev; /* backward ptr to the net dev*/
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};
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/*--------------------------------------------------------------*
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* CLAW main control block *
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*---------------------------------------------------------------*/
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struct claw_privbk {
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void *p_buff_ccw;
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__u32 p_buff_ccw_num;
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void *p_buff_read;
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__u32 p_buff_read_num;
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__u32 p_buff_pages_perread;
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void *p_buff_write;
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__u32 p_buff_write_num;
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__u32 p_buff_pages_perwrite;
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long active_link_ID; /* Active logical link ID */
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struct ccwbk *p_write_free_chain; /* pointer to free ccw chain */
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struct ccwbk *p_write_active_first; /* ptr to the first write ccw */
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struct ccwbk *p_write_active_last; /* ptr to the last write ccw */
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struct ccwbk *p_read_active_first; /* ptr to the first read ccw */
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struct ccwbk *p_read_active_last; /* ptr to the last read ccw */
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struct endccw *p_end_ccw; /*ptr to ending ccw */
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struct ccwbk *p_claw_signal_blk; /* ptr to signal block */
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__u32 write_free_count; /* number of free bufs for write */
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struct net_device_stats stats; /* device status */
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struct chbk channel[2]; /* Channel control blocks */
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__u8 mtc_skipping;
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int mtc_offset;
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int mtc_logical_link;
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void *p_mtc_envelope;
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struct sk_buff *pk_skb; /* packing buffer */
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int pk_cnt;
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struct clawctl ctl_bk;
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struct claw_env *p_env;
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__u8 system_validate_comp;
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__u8 release_pend;
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__u8 checksum_received_ip_pkts;
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__u8 buffs_alloc;
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struct endccw end_ccw;
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unsigned long tbusy;
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};
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/************************************************************/
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/* define global constants */
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/************************************************************/
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#define CCWBK_SIZE sizeof(struct ccwbk)
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