diff options
Diffstat (limited to 'drivers/s390/net/lcs.h')
| -rw-r--r-- | drivers/s390/net/lcs.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/s390/net/lcs.h b/drivers/s390/net/lcs.h new file mode 100644 index 000000000000..a7f348ef1b08 --- /dev/null +++ b/drivers/s390/net/lcs.h @@ -0,0 +1,321 @@ +/*lcs.h*/ + +#include <linux/interrupt.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/workqueue.h> +#include <asm/ccwdev.h> + +#define VERSION_LCS_H "$Revision: 1.19 $" + +#define LCS_DBF_TEXT(level, name, text) \ + do { \ + debug_text_event(lcs_dbf_##name, level, text); \ + } while (0) + +#define LCS_DBF_HEX(level,name,addr,len) \ +do { \ + debug_event(lcs_dbf_##name,level,(void*)(addr),len); \ +} while (0) + +#define LCS_DBF_TEXT_(level,name,text...) \ +do { \ + sprintf(debug_buffer, text); \ + debug_text_event(lcs_dbf_##name,level, debug_buffer);\ +} while (0) + +/** + * some more definitions for debug or output stuff + */ +#define PRINTK_HEADER " lcs: " + +/** + * sysfs related stuff + */ +#define CARD_FROM_DEV(cdev) \ + (struct lcs_card *) \ + ((struct ccwgroup_device *)cdev->dev.driver_data)->dev.driver_data; +/** + * CCW commands used in this driver + */ +#define LCS_CCW_WRITE 0x01 +#define LCS_CCW_READ 0x02 +#define LCS_CCW_TRANSFER 0x08 + +/** + * LCS device status primitives + */ +#define LCS_CMD_STARTLAN 0x01 +#define LCS_CMD_STOPLAN 0x02 +#define LCS_CMD_LANSTAT 0x04 +#define LCS_CMD_STARTUP 0x07 +#define LCS_CMD_SHUTDOWN 0x08 +#define LCS_CMD_QIPASSIST 0xb2 +#define LCS_CMD_SETIPM 0xb4 +#define LCS_CMD_DELIPM 0xb5 + +#define LCS_INITIATOR_TCPIP 0x00 +#define LCS_INITIATOR_LGW 0x01 +#define LCS_STD_CMD_SIZE 16 +#define LCS_MULTICAST_CMD_SIZE 404 + +/** + * LCS IPASSIST MASKS,only used when multicast is switched on + */ +/* Not supported by LCS */ +#define LCS_IPASS_ARP_PROCESSING 0x0001 +#define LCS_IPASS_IN_CHECKSUM_SUPPORT 0x0002 +#define LCS_IPASS_OUT_CHECKSUM_SUPPORT 0x0004 +#define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008 +#define LCS_IPASS_IP_FILTERING 0x0010 +/* Supported by lcs 3172 */ +#define LCS_IPASS_IPV6_SUPPORT 0x0020 +#define LCS_IPASS_MULTICAST_SUPPORT 0x0040 + +/** + * LCS sense byte definitions + */ +#define LCS_SENSE_INTERFACE_DISCONNECT 0x01 +#define LCS_SENSE_EQUIPMENT_CHECK 0x10 +#define LCS_SENSE_BUS_OUT_CHECK 0x20 +#define LCS_SENSE_INTERVENTION_REQUIRED 0x40 +#define LCS_SENSE_CMD_REJECT 0x80 +#define LCS_SENSE_RESETTING_EVENT 0x0080 +#define LCS_SENSE_DEVICE_ONLINE 0x0020 + +/** + * LCS packet type definitions + */ +#define LCS_FRAME_TYPE_CONTROL 0 +#define LCS_FRAME_TYPE_ENET 1 +#define LCS_FRAME_TYPE_TR 2 +#define LCS_FRAME_TYPE_FDDI 7 +#define LCS_FRAME_TYPE_AUTO -1 + +/** + * some more definitions,we will sort them later + */ +#define LCS_ILLEGAL_OFFSET 0xffff +#define LCS_IOBUFFERSIZE 0x5000 +#define LCS_NUM_BUFFS 8 /* needs to be power of 2 */ +#define LCS_MAC_LENGTH 6 +#define LCS_INVALID_PORT_NO -1 +#define LCS_LANCMD_TIMEOUT_DEFAULT 5 + +/** + * Multicast state + */ +#define LCS_IPM_STATE_SET_REQUIRED 0 +#define LCS_IPM_STATE_DEL_REQUIRED 1 +#define LCS_IPM_STATE_ON_CARD 2 + +/** + * LCS IP Assist declarations + * seems to be only used for multicast + */ +#define LCS_IPASS_ARP_PROCESSING 0x0001 +#define LCS_IPASS_INBOUND_CSUM_SUPP 0x0002 +#define LCS_IPASS_OUTBOUND_CSUM_SUPP 0x0004 +#define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008 +#define LCS_IPASS_IP_FILTERING 0x0010 +#define LCS_IPASS_IPV6_SUPPORT 0x0020 +#define LCS_IPASS_MULTICAST_SUPPORT 0x0040 + +/** + * LCS Buffer states + */ +enum lcs_buffer_states { + BUF_STATE_EMPTY, /* buffer is empty */ + BUF_STATE_LOCKED, /* buffer is locked, don't touch */ + BUF_STATE_READY, /* buffer is ready for read/write */ + BUF_STATE_PROCESSED, +}; + +/** + * LCS Channel State Machine declarations + */ +enum lcs_channel_states { + CH_STATE_INIT, + CH_STATE_HALTED, + CH_STATE_STOPPED, + CH_STATE_RUNNING, + CH_STATE_SUSPENDED, + CH_STATE_CLEARED, +}; + +/** + * LCS device state machine + */ +enum lcs_dev_states { + DEV_STATE_DOWN, + DEV_STATE_UP, + DEV_STATE_RECOVER, +}; + +enum lcs_threads { + LCS_SET_MC_THREAD = 1, + LCS_STARTLAN_THREAD = 2, + LCS_STOPLAN_THREAD = 4, + LCS_STARTUP_THREAD = 8, +}; +/** + * LCS struct declarations + */ +struct lcs_header { + __u16 offset; + __u8 type; + __u8 slot; +} __attribute__ ((packed)); + +struct lcs_ip_mac_pair { + __u32 ip_addr; + __u8 mac_addr[LCS_MAC_LENGTH]; + __u8 reserved[2]; +} __attribute__ ((packed)); + +struct lcs_ipm_list { + struct list_head list; + struct lcs_ip_mac_pair ipm; + __u8 ipm_state; +}; + +struct lcs_cmd { + __u16 offset; + __u8 type; + __u8 slot; + __u8 cmd_code; + __u8 initiator; + __u16 sequence_no; + __u16 return_code; + union { + struct { + __u8 lan_type; + __u8 portno; + __u16 parameter_count; + __u8 operator_flags[3]; + __u8 reserved[3]; + } lcs_std_cmd; + struct { + __u16 unused1; + __u16 buff_size; + __u8 unused2[6]; + } lcs_startup; + struct { + __u8 lan_type; + __u8 portno; + __u8 unused[10]; + __u8 mac_addr[LCS_MAC_LENGTH]; + __u32 num_packets_deblocked; + __u32 num_packets_blocked; + __u32 num_packets_tx_on_lan; + __u32 num_tx_errors_detected; + __u32 num_tx_packets_disgarded; + __u32 num_packets_rx_from_lan; + __u32 num_rx_errors_detected; + __u32 num_rx_discarded_nobuffs_avail; + __u32 num_rx_packets_too_large; + } lcs_lanstat_cmd; +#ifdef CONFIG_IP_MULTICAST + struct { + __u8 lan_type; + __u8 portno; + __u16 num_ip_pairs; + __u16 ip_assists_supported; + __u16 ip_assists_enabled; + __u16 version; + struct { + struct lcs_ip_mac_pair + ip_mac_pair[32]; + __u32 response_data; + } lcs_ipass_ctlmsg __attribute ((packed)); + } lcs_qipassist __attribute__ ((packed)); +#endif /*CONFIG_IP_MULTICAST */ + } cmd __attribute__ ((packed)); +} __attribute__ ((packed)); + +/** + * Forward declarations. + */ +struct lcs_card; +struct lcs_channel; + +/** + * Definition of an lcs buffer. + */ +struct lcs_buffer { + enum lcs_buffer_states state; + void *data; + int count; + /* Callback for completion notification. */ + void (*callback)(struct lcs_channel *, struct lcs_buffer *); +}; + +struct lcs_reply { + struct list_head list; + __u16 sequence_no; + atomic_t refcnt; + /* Callback for completion notification. */ + void (*callback)(struct lcs_card *, struct lcs_cmd *); + wait_queue_head_t wait_q; + struct lcs_card *card; + int received; + int rc; +}; + +/** + * Definition of an lcs channel + */ +struct lcs_channel { + enum lcs_channel_states state; + struct ccw_device *ccwdev; + struct ccw1 ccws[LCS_NUM_BUFFS + 1]; + wait_queue_head_t wait_q; + struct tasklet_struct irq_tasklet; + struct lcs_buffer iob[LCS_NUM_BUFFS]; + int io_idx; + int buf_idx; +}; + + +/** + * definition of the lcs card + */ +struct lcs_card { + spinlock_t lock; + spinlock_t ipm_lock; + enum lcs_dev_states state; + struct net_device *dev; + struct net_device_stats stats; + unsigned short (*lan_type_trans)(struct sk_buff *skb, + struct net_device *dev); + struct lcs_channel read; + struct lcs_channel write; + struct lcs_buffer *tx_buffer; + int tx_emitted; + struct list_head lancmd_waiters; + int lancmd_timeout; + + struct work_struct kernel_thread_starter; + spinlock_t mask_lock; + unsigned long thread_start_mask; + unsigned long thread_running_mask; + unsigned long thread_allowed_mask; + wait_queue_head_t wait_q; + +#ifdef CONFIG_IP_MULTICAST + struct list_head ipm_list; +#endif + __u8 mac[LCS_MAC_LENGTH]; + __u16 ip_assists_supported; + __u16 ip_assists_enabled; + __s8 lan_type; + __u32 pkt_seq; + __u16 sequence_no; + __s16 portno; + /* Some info copied from probeinfo */ + u8 device_forced; + u8 max_port_no; + u8 hint_port_no; + s16 port_protocol_no; +} __attribute__ ((aligned(8))); + |