/* SPDX-License-Identifier: GPL-2.0 */ /*lcs.h*/ #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/workqueue.h> #include <linux/refcount.h> #include <asm/ccwdev.h> #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 { \ if (debug_level_enabled(lcs_dbf_##name, level)) { \ sprintf(debug_buffer, text); \ debug_text_event(lcs_dbf_##name, level, debug_buffer); \ } \ } while (0) /** * sysfs related stuff */ #define CARD_FROM_DEV(cdev) \ (struct lcs_card *) dev_get_drvdata( \ &((struct ccwgroup_device *)dev_get_drvdata(&cdev->dev))->dev); /** * Enum for classifying detected devices. */ enum lcs_channel_types { /* Device is not a channel */ lcs_channel_type_none, /* Device is a 2216 channel */ lcs_channel_type_parallel, /* Device is a 2216 channel */ lcs_channel_type_2216, /* Device is a OSA2 card */ lcs_channel_type_osa2 }; /** * 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_BYTE_0 0 #define LCS_SENSE_BYTE_1 1 #define LCS_SENSE_BYTE_2 2 #define LCS_SENSE_BYTE_3 3 #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 0x80 #define LCS_SENSE_DEVICE_ONLINE 0x20 /** * 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 32 /* 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 { LCS_BUF_STATE_EMPTY, /* buffer is empty */ LCS_BUF_STATE_LOCKED, /* buffer is locked, don't touch */ LCS_BUF_STATE_READY, /* buffer is ready for read/write */ LCS_BUF_STATE_PROCESSED, }; /** * LCS Channel State Machine declarations */ enum lcs_channel_states { LCS_CH_STATE_INIT, LCS_CH_STATE_HALTED, LCS_CH_STATE_STOPPED, LCS_CH_STATE_RUNNING, LCS_CH_STATE_SUSPENDED, LCS_CH_STATE_CLEARED, LCS_CH_STATE_ERROR, }; /** * 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_RECOVERY_THREAD = 2, }; /** * LCS struct declarations */ struct lcs_header { __u16 offset; __u8 type; __u8 slot; } __attribute__ ((packed)); struct lcs_ip_mac_pair { __be32 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; refcount_t refcnt; /* Callback for completion notification. */ void (*callback)(struct lcs_card *, struct lcs_cmd *); wait_queue_head_t wait_q; struct lcs_card *card; struct timer_list timer; 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; __be16 (*lan_type_trans)(struct sk_buff *skb, struct net_device *dev); struct ccwgroup_device *gdev; 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)));