diff options
Diffstat (limited to 'drivers/s390/net/claw.h')
| -rw-r--r-- | drivers/s390/net/claw.h | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/drivers/s390/net/claw.h b/drivers/s390/net/claw.h new file mode 100644 index 00000000000..3df71970f60 --- /dev/null +++ b/drivers/s390/net/claw.h @@ -0,0 +1,335 @@ +/******************************************************* +* Define constants * +* * +********************************************************/ +#define VERSION_CLAW_H "$Revision: 1.6 $" +/*-----------------------------------------------------* +* CCW command codes for CLAW protocol * +*------------------------------------------------------*/ + +#define CCW_CLAW_CMD_WRITE 0x01 /* write - not including link */ +#define CCW_CLAW_CMD_READ 0x02 /* read */ +#define CCW_CLAW_CMD_NOP 0x03 /* NOP */ +#define CCW_CLAW_CMD_SENSE 0x04 /* Sense */ +#define CCW_CLAW_CMD_SIGNAL_SMOD 0x05 /* Signal Status Modifier */ +#define CCW_CLAW_CMD_TIC 0x08 /* TIC */ +#define CCW_CLAW_CMD_READHEADER 0x12 /* read header data */ +#define CCW_CLAW_CMD_READFF 0x22 /* read an FF */ +#define CCW_CLAW_CMD_SENSEID 0xe4 /* Sense ID */ + + +/*-----------------------------------------------------* +* CLAW Unique constants * +*------------------------------------------------------*/ + +#define MORE_to_COME_FLAG 0x04 /* OR with write CCW in case of m-t-c */ +#define CLAW_IDLE 0x00 /* flag to indicate CLAW is idle */ +#define CLAW_BUSY 0xff /* flag to indicate CLAW is busy */ +#define CLAW_PENDING 0x00 /* flag to indicate i/o is pending */ +#define CLAW_COMPLETE 0xff /* flag to indicate i/o completed */ + +/*-----------------------------------------------------* +* CLAW control comand code * +*------------------------------------------------------*/ + +#define SYSTEM_VALIDATE_REQUEST 0x01 /* System Validate request */ +#define SYSTEM_VALIDATE_RESPONSE 0x02 /* System Validate response */ +#define CONNECTION_REQUEST 0x21 /* Connection request */ +#define CONNECTION_RESPONSE 0x22 /* Connection response */ +#define CONNECTION_CONFIRM 0x23 /* Connection confirm */ +#define DISCONNECT 0x24 /* Disconnect */ +#define CLAW_ERROR 0x41 /* CLAW error message */ +#define CLAW_VERSION_ID 2 /* CLAW version ID */ + +/*-----------------------------------------------------* +* CLAW adater sense bytes * +*------------------------------------------------------*/ + +#define CLAW_ADAPTER_SENSE_BYTE 0x41 /* Stop command issued to adapter */ + +/*-----------------------------------------------------* +* CLAW control command return codes * +*------------------------------------------------------*/ + +#define CLAW_RC_NAME_MISMATCH 166 /* names do not match */ +#define CLAW_RC_WRONG_VERSION 167 /* wrong CLAW version number */ +#define CLAW_RC_HOST_RCV_TOO_SMALL 180 /* Host maximum receive is */ + /* less than Linux on zSeries*/ + /* transmit size */ + +/*-----------------------------------------------------* +* CLAW Constants application name * +*------------------------------------------------------*/ + +#define HOST_APPL_NAME "TCPIP " +#define WS_APPL_NAME_IP_LINK "TCPIP " +#define WS_APPL_NAME_IP_NAME "IP " +#define WS_APPL_NAME_API_LINK "API " +#define WS_APPL_NAME_PACKED "PACKED " +#define WS_NAME_NOT_DEF "NOT_DEF " +#define PACKING_ASK 1 +#define PACK_SEND 2 +#define DO_PACKED 3 + +#define MAX_ENVELOPE_SIZE 65536 +#define CLAW_DEFAULT_MTU_SIZE 4096 +#define DEF_PACK_BUFSIZE 32768 +#define READ 0 +#define WRITE 1 + +#define TB_TX 0 /* sk buffer handling in process */ +#define TB_STOP 1 /* network device stop in process */ +#define TB_RETRY 2 /* retry in process */ +#define TB_NOBUFFER 3 /* no buffer on free queue */ +#define CLAW_MAX_LINK_ID 1 +#define CLAW_MAX_DEV 256 /* max claw devices */ +#define MAX_NAME_LEN 8 /* host name, adapter name length */ +#define CLAW_FRAME_SIZE 4096 +#define CLAW_ID_SIZE BUS_ID_SIZE+3 + +/* state machine codes used in claw_irq_handler */ + +#define CLAW_STOP 0 +#define CLAW_START_HALT_IO 1 +#define CLAW_START_SENSEID 2 +#define CLAW_START_READ 3 +#define CLAW_START_WRITE 4 + +/*-----------------------------------------------------* +* Lock flag * +*------------------------------------------------------*/ +#define LOCK_YES 0 +#define LOCK_NO 1 + +/*-----------------------------------------------------* +* DBF Debug macros * +*------------------------------------------------------*/ +#define CLAW_DBF_TEXT(level, name, text) \ + do { \ + debug_text_event(claw_dbf_##name, level, text); \ + } while (0) + +#define CLAW_DBF_HEX(level,name,addr,len) \ +do { \ + debug_event(claw_dbf_##name,level,(void*)(addr),len); \ +} while (0) + +#define CLAW_DBF_TEXT_(level,name,text...) \ +do { \ + sprintf(debug_buffer, text); \ + debug_text_event(claw_dbf_##name,level, debug_buffer);\ +} while (0) + +/******************************************************* +* Define Control Blocks * +* * +********************************************************/ + +/*------------------------------------------------------*/ +/* CLAW header */ +/*------------------------------------------------------*/ + +struct clawh { + __u16 length; /* length of data read by preceding read CCW */ + __u8 opcode; /* equivalent read CCW */ + __u8 flag; /* flag of FF to indicate read was completed */ +}; + +/*------------------------------------------------------*/ +/* CLAW Packing header 4 bytes */ +/*------------------------------------------------------*/ +struct clawph { + __u16 len; /* Length of Packed Data Area */ + __u8 flag; /* Reserved not used */ + __u8 link_num; /* Link ID */ +}; + +/*------------------------------------------------------*/ +/* CLAW Ending struct ccwbk */ +/*------------------------------------------------------*/ +struct endccw { + __u32 real; /* real address of this block */ + __u8 write1; /* write 1 is active */ + __u8 read1; /* read 1 is active */ + __u16 reserved; /* reserved for future use */ + struct ccw1 write1_nop1; + struct ccw1 write1_nop2; + struct ccw1 write2_nop1; + struct ccw1 write2_nop2; + struct ccw1 read1_nop1; + struct ccw1 read1_nop2; + struct ccw1 read2_nop1; + struct ccw1 read2_nop2; +}; + +/*------------------------------------------------------*/ +/* CLAW struct ccwbk */ +/*------------------------------------------------------*/ +struct ccwbk { + void *next; /* pointer to next ccw block */ + __u32 real; /* real address of this ccw */ + void *p_buffer; /* virtual address of data */ + struct clawh header; /* claw header */ + struct ccw1 write; /* write CCW */ + struct ccw1 w_read_FF; /* read FF */ + struct ccw1 w_TIC_1; /* TIC */ + struct ccw1 read; /* read CCW */ + struct ccw1 read_h; /* read header */ + struct ccw1 signal; /* signal SMOD */ + struct ccw1 r_TIC_1; /* TIC1 */ + struct ccw1 r_read_FF; /* read FF */ + struct ccw1 r_TIC_2; /* TIC2 */ +}; + +/*------------------------------------------------------*/ +/* CLAW control block */ +/*------------------------------------------------------*/ +struct clawctl { + __u8 command; /* control command */ + __u8 version; /* CLAW protocol version */ + __u8 linkid; /* link ID */ + __u8 correlator; /* correlator */ + __u8 rc; /* return code */ + __u8 reserved1; /* reserved */ + __u8 reserved2; /* reserved */ + __u8 reserved3; /* reserved */ + __u8 data[24]; /* command specific fields */ +}; + +/*------------------------------------------------------*/ +/* Data for SYSTEMVALIDATE command */ +/*------------------------------------------------------*/ +struct sysval { + char WS_name[8]; /* Workstation System name */ + char host_name[8]; /* Host system name */ + __u16 read_frame_size; /* read frame size */ + __u16 write_frame_size; /* write frame size */ + __u8 reserved[4]; /* reserved */ +}; + +/*------------------------------------------------------*/ +/* Data for Connect command */ +/*------------------------------------------------------*/ +struct conncmd { + char WS_name[8]; /* Workstation application name */ + char host_name[8]; /* Host application name */ + __u16 reserved1[2]; /* read frame size */ + __u8 reserved2[4]; /* reserved */ +}; + +/*------------------------------------------------------*/ +/* Data for CLAW error */ +/*------------------------------------------------------*/ +struct clawwerror { + char reserved1[8]; /* reserved */ + char reserved2[8]; /* reserved */ + char reserved3[8]; /* reserved */ +}; + +/*------------------------------------------------------*/ +/* Data buffer for CLAW */ +/*------------------------------------------------------*/ +struct clawbuf { + char buffer[MAX_ENVELOPE_SIZE]; /* data buffer */ +}; + +/*------------------------------------------------------*/ +/* Channel control block for read and write channel */ +/*------------------------------------------------------*/ + +struct chbk { + unsigned int devno; + int irq; + char id[CLAW_ID_SIZE]; + __u32 IO_active; + __u8 claw_state; + struct irb *irb; + struct ccw_device *cdev; /* pointer to the channel device */ + struct net_device *ndev; + wait_queue_head_t wait; + struct tasklet_struct tasklet; + struct timer_list timer; + unsigned long flag_a; /* atomic flags */ +#define CLAW_BH_ACTIVE 0 + unsigned long flag_b; /* atomic flags */ +#define CLAW_WRITE_ACTIVE 0 + __u8 last_dstat; + __u8 flag; + struct sk_buff_head collect_queue; + spinlock_t collect_lock; +#define CLAW_WRITE 0x02 /* - Set if this is a write channel */ +#define CLAW_READ 0x01 /* - Set if this is a read channel */ +#define CLAW_TIMER 0x80 /* - Set if timer made the wake_up */ +}; + +/*--------------------------------------------------------------* +* CLAW environment block * +*---------------------------------------------------------------*/ + +struct claw_env { + unsigned int devno[2]; /* device number */ + char host_name[9]; /* Host name */ + char adapter_name [9]; /* adapter name */ + char api_type[9]; /* TCPIP, API or PACKED */ + void *p_priv; /* privptr */ + __u16 read_buffers; /* read buffer number */ + __u16 write_buffers; /* write buffer number */ + __u16 read_size; /* read buffer size */ + __u16 write_size; /* write buffer size */ + __u16 dev_id; /* device ident */ + __u8 packing; /* are we packing? */ + volatile __u8 queme_switch; /* gate for imed packing */ + volatile unsigned long pk_delay; /* Delay for adaptive packing */ + __u8 in_use; /* device active flag */ + struct net_device *ndev; /* backward ptr to the net dev*/ +}; + +/*--------------------------------------------------------------* +* CLAW main control block * +*---------------------------------------------------------------*/ + +struct claw_privbk { + void *p_buff_ccw; + __u32 p_buff_ccw_num; + void *p_buff_read; + __u32 p_buff_read_num; + __u32 p_buff_pages_perread; + void *p_buff_write; + __u32 p_buff_write_num; + __u32 p_buff_pages_perwrite; + long active_link_ID; /* Active logical link ID */ + struct ccwbk *p_write_free_chain; /* pointer to free ccw chain */ + struct ccwbk *p_write_active_first; /* ptr to the first write ccw */ + struct ccwbk *p_write_active_last; /* ptr to the last write ccw */ + struct ccwbk *p_read_active_first; /* ptr to the first read ccw */ + struct ccwbk *p_read_active_last; /* ptr to the last read ccw */ + struct endccw *p_end_ccw; /*ptr to ending ccw */ + struct ccwbk *p_claw_signal_blk; /* ptr to signal block */ + __u32 write_free_count; /* number of free bufs for write */ + struct net_device_stats stats; /* device status */ + struct chbk channel[2]; /* Channel control blocks */ + __u8 mtc_skipping; + int mtc_offset; + int mtc_logical_link; + void *p_mtc_envelope; + struct sk_buff *pk_skb; /* packing buffer */ + int pk_cnt; + struct clawctl ctl_bk; + struct claw_env *p_env; + __u8 system_validate_comp; + __u8 release_pend; + __u8 checksum_received_ip_pkts; + __u8 buffs_alloc; + struct endccw end_ccw; + unsigned long tbusy; + +}; + + +/************************************************************/ +/* define global constants */ +/************************************************************/ + +#define CCWBK_SIZE sizeof(struct ccwbk) + + |