mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
311 lines
6.8 KiB
311 lines
6.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* Copyright IBM Corp. 2001, 2007 |
|
* Authors: Fritz Elfert ([email protected]) |
|
* Peter Tiedemann ([email protected]) |
|
*/ |
|
|
|
#ifndef _CTCM_MAIN_H_ |
|
#define _CTCM_MAIN_H_ |
|
|
|
#include <asm/ccwdev.h> |
|
#include <asm/ccwgroup.h> |
|
|
|
#include <linux/skbuff.h> |
|
#include <linux/netdevice.h> |
|
|
|
#include "fsm.h" |
|
#include "ctcm_dbug.h" |
|
#include "ctcm_mpc.h" |
|
|
|
#define CTC_DRIVER_NAME "ctcm" |
|
#define CTC_DEVICE_NAME "ctc" |
|
#define MPC_DEVICE_NAME "mpc" |
|
#define CTC_DEVICE_GENE CTC_DEVICE_NAME "%d" |
|
#define MPC_DEVICE_GENE MPC_DEVICE_NAME "%d" |
|
|
|
#define CHANNEL_FLAGS_READ 0 |
|
#define CHANNEL_FLAGS_WRITE 1 |
|
#define CHANNEL_FLAGS_INUSE 2 |
|
#define CHANNEL_FLAGS_BUFSIZE_CHANGED 4 |
|
#define CHANNEL_FLAGS_FAILED 8 |
|
#define CHANNEL_FLAGS_WAITIRQ 16 |
|
#define CHANNEL_FLAGS_RWMASK 1 |
|
#define CHANNEL_DIRECTION(f) (f & CHANNEL_FLAGS_RWMASK) |
|
|
|
#define LOG_FLAG_ILLEGALPKT 1 |
|
#define LOG_FLAG_ILLEGALSIZE 2 |
|
#define LOG_FLAG_OVERRUN 4 |
|
#define LOG_FLAG_NOMEM 8 |
|
|
|
#define ctcm_pr_debug(fmt, arg...) printk(KERN_DEBUG fmt, ##arg) |
|
|
|
#define CTCM_PR_DEBUG(fmt, arg...) \ |
|
do { \ |
|
if (do_debug) \ |
|
printk(KERN_DEBUG fmt, ##arg); \ |
|
} while (0) |
|
|
|
#define CTCM_PR_DBGDATA(fmt, arg...) \ |
|
do { \ |
|
if (do_debug_data) \ |
|
printk(KERN_DEBUG fmt, ##arg); \ |
|
} while (0) |
|
|
|
#define CTCM_D3_DUMP(buf, len) \ |
|
do { \ |
|
if (do_debug_data) \ |
|
ctcmpc_dumpit(buf, len); \ |
|
} while (0) |
|
|
|
#define CTCM_CCW_DUMP(buf, len) \ |
|
do { \ |
|
if (do_debug_ccw) \ |
|
ctcmpc_dumpit(buf, len); \ |
|
} while (0) |
|
|
|
/** |
|
* Enum for classifying detected devices |
|
*/ |
|
enum ctcm_channel_types { |
|
/* Device is not a channel */ |
|
ctcm_channel_type_none, |
|
|
|
/* Device is a CTC/A */ |
|
ctcm_channel_type_parallel, |
|
|
|
/* Device is a FICON channel */ |
|
ctcm_channel_type_ficon, |
|
|
|
/* Device is a ESCON channel */ |
|
ctcm_channel_type_escon |
|
}; |
|
|
|
/* |
|
* CCW commands, used in this driver. |
|
*/ |
|
#define CCW_CMD_WRITE 0x01 |
|
#define CCW_CMD_READ 0x02 |
|
#define CCW_CMD_NOOP 0x03 |
|
#define CCW_CMD_TIC 0x08 |
|
#define CCW_CMD_SENSE_CMD 0x14 |
|
#define CCW_CMD_WRITE_CTL 0x17 |
|
#define CCW_CMD_SET_EXTENDED 0xc3 |
|
#define CCW_CMD_PREPARE 0xe3 |
|
|
|
#define CTCM_PROTO_S390 0 |
|
#define CTCM_PROTO_LINUX 1 |
|
#define CTCM_PROTO_LINUX_TTY 2 |
|
#define CTCM_PROTO_OS390 3 |
|
#define CTCM_PROTO_MPC 4 |
|
#define CTCM_PROTO_MAX 4 |
|
|
|
#define CTCM_BUFSIZE_LIMIT 65535 |
|
#define CTCM_BUFSIZE_DEFAULT 32768 |
|
#define MPC_BUFSIZE_DEFAULT CTCM_BUFSIZE_LIMIT |
|
|
|
#define CTCM_TIME_1_SEC 1000 |
|
#define CTCM_TIME_5_SEC 5000 |
|
#define CTCM_TIME_10_SEC 10000 |
|
|
|
#define CTCM_INITIAL_BLOCKLEN 2 |
|
|
|
#define CTCM_READ 0 |
|
#define CTCM_WRITE 1 |
|
|
|
#define CTCM_ID_SIZE 20+3 |
|
|
|
struct ctcm_profile { |
|
unsigned long maxmulti; |
|
unsigned long maxcqueue; |
|
unsigned long doios_single; |
|
unsigned long doios_multi; |
|
unsigned long txlen; |
|
unsigned long tx_time; |
|
unsigned long send_stamp; |
|
}; |
|
|
|
/* |
|
* Definition of one channel |
|
*/ |
|
struct channel { |
|
struct channel *next; |
|
char id[CTCM_ID_SIZE]; |
|
struct ccw_device *cdev; |
|
/* |
|
* Type of this channel. |
|
* CTC/A or Escon for valid channels. |
|
*/ |
|
enum ctcm_channel_types type; |
|
/* |
|
* Misc. flags. See CHANNEL_FLAGS_... below |
|
*/ |
|
__u32 flags; |
|
__u16 protocol; /* protocol of this channel (4 = MPC) */ |
|
/* |
|
* I/O and irq related stuff |
|
*/ |
|
struct ccw1 *ccw; |
|
struct irb *irb; |
|
/* |
|
* RX/TX buffer size |
|
*/ |
|
int max_bufsize; |
|
struct sk_buff *trans_skb; /* transmit/receive buffer */ |
|
struct sk_buff_head io_queue; /* universal I/O queue */ |
|
struct tasklet_struct ch_tasklet; /* MPC ONLY */ |
|
/* |
|
* TX queue for collecting skb's during busy. |
|
*/ |
|
struct sk_buff_head collect_queue; |
|
/* |
|
* Amount of data in collect_queue. |
|
*/ |
|
int collect_len; |
|
/* |
|
* spinlock for collect_queue and collect_len |
|
*/ |
|
spinlock_t collect_lock; |
|
/* |
|
* Timer for detecting unresposive |
|
* I/O operations. |
|
*/ |
|
fsm_timer timer; |
|
/* MPC ONLY section begin */ |
|
__u32 th_seq_num; /* SNA TH seq number */ |
|
__u8 th_seg; |
|
__u32 pdu_seq; |
|
struct sk_buff *xid_skb; |
|
char *xid_skb_data; |
|
struct th_header *xid_th; |
|
struct xid2 *xid; |
|
char *xid_id; |
|
struct th_header *rcvd_xid_th; |
|
struct xid2 *rcvd_xid; |
|
char *rcvd_xid_id; |
|
__u8 in_mpcgroup; |
|
fsm_timer sweep_timer; |
|
struct sk_buff_head sweep_queue; |
|
struct th_header *discontact_th; |
|
struct tasklet_struct ch_disc_tasklet; |
|
/* MPC ONLY section end */ |
|
|
|
int retry; /* retry counter for misc. operations */ |
|
fsm_instance *fsm; /* finite state machine of this channel */ |
|
struct net_device *netdev; /* corresponding net_device */ |
|
struct ctcm_profile prof; |
|
__u8 *trans_skb_data; |
|
__u16 logflags; |
|
__u8 sense_rc; /* last unit check sense code report control */ |
|
}; |
|
|
|
struct ctcm_priv { |
|
struct net_device_stats stats; |
|
unsigned long tbusy; |
|
|
|
/* The MPC group struct of this interface */ |
|
struct mpc_group *mpcg; /* MPC only */ |
|
struct xid2 *xid; /* MPC only */ |
|
|
|
/* The finite state machine of this interface */ |
|
fsm_instance *fsm; |
|
|
|
/* The protocol of this device */ |
|
__u16 protocol; |
|
|
|
/* Timer for restarting after I/O Errors */ |
|
fsm_timer restart_timer; |
|
|
|
int buffer_size; /* ctc only */ |
|
|
|
struct channel *channel[2]; |
|
}; |
|
|
|
int ctcm_open(struct net_device *dev); |
|
int ctcm_close(struct net_device *dev); |
|
|
|
extern const struct attribute_group *ctcm_attr_groups[]; |
|
|
|
/* |
|
* Compatibility macros for busy handling |
|
* of network devices. |
|
*/ |
|
static inline void ctcm_clear_busy_do(struct net_device *dev) |
|
{ |
|
clear_bit(0, &(((struct ctcm_priv *)dev->ml_priv)->tbusy)); |
|
netif_wake_queue(dev); |
|
} |
|
|
|
static inline void ctcm_clear_busy(struct net_device *dev) |
|
{ |
|
struct mpc_group *grp; |
|
grp = ((struct ctcm_priv *)dev->ml_priv)->mpcg; |
|
|
|
if (!(grp && grp->in_sweep)) |
|
ctcm_clear_busy_do(dev); |
|
} |
|
|
|
|
|
static inline int ctcm_test_and_set_busy(struct net_device *dev) |
|
{ |
|
netif_stop_queue(dev); |
|
return test_and_set_bit(0, |
|
&(((struct ctcm_priv *)dev->ml_priv)->tbusy)); |
|
} |
|
|
|
extern int loglevel; |
|
extern struct channel *channels; |
|
|
|
void ctcm_unpack_skb(struct channel *ch, struct sk_buff *pskb); |
|
|
|
/* |
|
* Functions related to setup and device detection. |
|
*/ |
|
|
|
static inline int ctcm_less_than(char *id1, char *id2) |
|
{ |
|
unsigned long dev1, dev2; |
|
|
|
id1 = id1 + 5; |
|
id2 = id2 + 5; |
|
|
|
dev1 = simple_strtoul(id1, &id1, 16); |
|
dev2 = simple_strtoul(id2, &id2, 16); |
|
|
|
return (dev1 < dev2); |
|
} |
|
|
|
int ctcm_ch_alloc_buffer(struct channel *ch); |
|
|
|
static inline int ctcm_checkalloc_buffer(struct channel *ch) |
|
{ |
|
if (ch->trans_skb == NULL) |
|
return ctcm_ch_alloc_buffer(ch); |
|
if (ch->flags & CHANNEL_FLAGS_BUFSIZE_CHANGED) { |
|
dev_kfree_skb(ch->trans_skb); |
|
return ctcm_ch_alloc_buffer(ch); |
|
} |
|
return 0; |
|
} |
|
|
|
struct mpc_group *ctcmpc_init_mpc_group(struct ctcm_priv *priv); |
|
|
|
/* test if protocol attribute (of struct ctcm_priv or struct channel) |
|
* has MPC protocol setting. Type is not checked |
|
*/ |
|
#define IS_MPC(p) ((p)->protocol == CTCM_PROTO_MPC) |
|
|
|
/* test if struct ctcm_priv of struct net_device has MPC protocol setting */ |
|
#define IS_MPCDEV(dev) IS_MPC((struct ctcm_priv *)dev->ml_priv) |
|
|
|
/* |
|
* Definition of our link level header. |
|
*/ |
|
struct ll_header { |
|
__u16 length; |
|
__u16 type; |
|
__u16 unused; |
|
}; |
|
#define LL_HEADER_LENGTH (sizeof(struct ll_header)) |
|
|
|
#endif
|
|
|