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net: wan: Delete the DLCI / SDLA drivers
The DLCI driver (dlci.c) implements the Frame Relay protocol. However,
we already have another newer and better implementation of Frame Relay
provided by the HDLC_FR driver (hdlc_fr.c).
The DLCI driver's implementation of Frame Relay is used by only one
hardware driver in the kernel - the SDLA driver (sdla.c).
The SDLA driver provides Frame Relay support for the Sangoma S50x devices.
However, the vendor provides their own driver (along with their own
multi-WAN-protocol implementations including Frame Relay), called WANPIPE.
I believe most users of the hardware would use the vendor-provided WANPIPE
driver instead.
(The WANPIPE driver was even once in the kernel, but was deleted in
commit 8db60bcf30 ("[WAN]: Remove broken and unmaintained Sangoma
drivers.") because the vendor no longer updated the in-kernel WANPIPE
driver.)
Cc: Mike McLagan <mike.mclagan@linux.org>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Link: https://lore.kernel.org/r/20201114150921.685594-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xie He
@@ -1,92 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* DLCI/FRAD Definitions for Frame Relay Access Devices. DLCI devices are
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* created for each DLCI associated with a FRAD. The FRAD driver
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* is not truly a network device, but the lower level device
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* handler. This allows other FRAD manufacturers to use the DLCI
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* code, including its RFC1490 encapsulation alongside the current
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* implementation for the Sangoma cards.
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*
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* Version: @(#)if_ifrad.h 0.15 31 Mar 96
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*
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* Author: Mike McLagan <mike.mclagan@linux.org>
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*
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* Changes:
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* 0.15 Mike McLagan changed structure defs (packed)
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* re-arranged flags
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* added DLCI_RET vars
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*/
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#ifndef _FRAD_H_
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#define _FRAD_H_
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#include <uapi/linux/if_frad.h>
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#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
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/* these are the fields of an RFC 1490 header */
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struct frhdr
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{
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unsigned char control;
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/* for IP packets, this can be the NLPID */
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unsigned char pad;
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unsigned char NLPID;
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unsigned char OUI[3];
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__be16 PID;
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#define IP_NLPID pad
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} __packed;
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/* see RFC 1490 for the definition of the following */
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#define FRAD_I_UI 0x03
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#define FRAD_P_PADDING 0x00
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#define FRAD_P_Q933 0x08
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#define FRAD_P_SNAP 0x80
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#define FRAD_P_CLNP 0x81
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#define FRAD_P_IP 0xCC
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struct dlci_local
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{
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struct net_device *master;
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struct net_device *slave;
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struct dlci_conf config;
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int configured;
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struct list_head list;
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/* callback function */
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void (*receive)(struct sk_buff *skb, struct net_device *);
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};
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struct frad_local
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{
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/* devices which this FRAD is slaved to */
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struct net_device *master[CONFIG_DLCI_MAX];
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short dlci[CONFIG_DLCI_MAX];
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struct frad_conf config;
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int configured; /* has this device been configured */
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int initialized; /* mem_start, port, irq set ? */
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/* callback functions */
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int (*activate)(struct net_device *, struct net_device *);
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int (*deactivate)(struct net_device *, struct net_device *);
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int (*assoc)(struct net_device *, struct net_device *);
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int (*deassoc)(struct net_device *, struct net_device *);
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int (*dlci_conf)(struct net_device *, struct net_device *, int get);
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/* fields that are used by the Sangoma SDLA cards */
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struct timer_list timer;
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struct net_device *dev;
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int type; /* adapter type */
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int state; /* state of the S502/8 control latch */
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int buffer; /* current buffer for S508 firmware */
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};
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#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
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extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
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#endif
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@@ -1,240 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Global definitions for the Frame relay interface.
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*
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* Version: @(#)if_ifrad.h 0.20 13 Apr 96
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*
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* Author: Mike McLagan <mike.mclagan@linux.org>
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*
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* Changes:
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* 0.15 Mike McLagan Structure packing
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*
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* 0.20 Mike McLagan New flags for S508 buffer handling
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*/
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#ifndef SDLA_H
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#define SDLA_H
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#include <uapi/linux/sdla.h>
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/* important Z80 window addresses */
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#define SDLA_CONTROL_WND 0xE000
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#define SDLA_502_CMD_BUF 0xEF60
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#define SDLA_502_RCV_BUF 0xA900
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#define SDLA_502_TXN_AVAIL 0xFFF1
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#define SDLA_502_RCV_AVAIL 0xFFF2
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#define SDLA_502_EVENT_FLAGS 0xFFF3
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#define SDLA_502_MDM_STATUS 0xFFF4
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#define SDLA_502_IRQ_INTERFACE 0xFFFD
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#define SDLA_502_IRQ_PERMISSION 0xFFFE
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#define SDLA_502_DATA_OFS 0x0010
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#define SDLA_508_CMD_BUF 0xE000
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#define SDLA_508_TXBUF_INFO 0xF100
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#define SDLA_508_RXBUF_INFO 0xF120
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#define SDLA_508_EVENT_FLAGS 0xF003
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#define SDLA_508_MDM_STATUS 0xF004
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#define SDLA_508_IRQ_INTERFACE 0xF010
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#define SDLA_508_IRQ_PERMISSION 0xF011
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#define SDLA_508_TSE_OFFSET 0xF012
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/* Event flags */
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#define SDLA_EVENT_STATUS 0x01
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#define SDLA_EVENT_DLCI_STATUS 0x02
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#define SDLA_EVENT_BAD_DLCI 0x04
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#define SDLA_EVENT_LINK_DOWN 0x40
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/* IRQ Trigger flags */
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#define SDLA_INTR_RX 0x01
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#define SDLA_INTR_TX 0x02
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#define SDLA_INTR_MODEM 0x04
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#define SDLA_INTR_COMPLETE 0x08
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#define SDLA_INTR_STATUS 0x10
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#define SDLA_INTR_TIMER 0x20
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/* DLCI status bits */
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#define SDLA_DLCI_DELETED 0x01
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#define SDLA_DLCI_ACTIVE 0x02
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#define SDLA_DLCI_WAITING 0x04
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#define SDLA_DLCI_NEW 0x08
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#define SDLA_DLCI_INCLUDED 0x40
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/* valid command codes */
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#define SDLA_INFORMATION_WRITE 0x01
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#define SDLA_INFORMATION_READ 0x02
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#define SDLA_ISSUE_IN_CHANNEL_SIGNAL 0x03
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#define SDLA_SET_DLCI_CONFIGURATION 0x10
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#define SDLA_READ_DLCI_CONFIGURATION 0x11
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#define SDLA_DISABLE_COMMUNICATIONS 0x12
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#define SDLA_ENABLE_COMMUNICATIONS 0x13
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#define SDLA_READ_DLC_STATUS 0x14
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#define SDLA_READ_DLC_STATISTICS 0x15
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#define SDLA_FLUSH_DLC_STATISTICS 0x16
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#define SDLA_LIST_ACTIVE_DLCI 0x17
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#define SDLA_FLUSH_INFORMATION_BUFFERS 0x18
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#define SDLA_ADD_DLCI 0x20
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#define SDLA_DELETE_DLCI 0x21
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#define SDLA_ACTIVATE_DLCI 0x22
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#define SDLA_DEACTIVATE_DLCI 0x23
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#define SDLA_READ_MODEM_STATUS 0x30
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#define SDLA_SET_MODEM_STATUS 0x31
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#define SDLA_READ_COMMS_ERR_STATS 0x32
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#define SDLA_FLUSH_COMMS_ERR_STATS 0x33
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#define SDLA_READ_CODE_VERSION 0x40
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#define SDLA_SET_IRQ_TRIGGER 0x50
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#define SDLA_GET_IRQ_TRIGGER 0x51
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/* In channel signal types */
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#define SDLA_ICS_LINK_VERIFY 0x02
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#define SDLA_ICS_STATUS_ENQ 0x03
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/* modem status flags */
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#define SDLA_MODEM_DTR_HIGH 0x01
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#define SDLA_MODEM_RTS_HIGH 0x02
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#define SDLA_MODEM_DCD_HIGH 0x08
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#define SDLA_MODEM_CTS_HIGH 0x20
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/* used for RET_MODEM interpretation */
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#define SDLA_MODEM_DCD_LOW 0x01
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#define SDLA_MODEM_CTS_LOW 0x02
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/* return codes */
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#define SDLA_RET_OK 0x00
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#define SDLA_RET_COMMUNICATIONS 0x01
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#define SDLA_RET_CHANNEL_INACTIVE 0x02
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#define SDLA_RET_DLCI_INACTIVE 0x03
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#define SDLA_RET_DLCI_CONFIG 0x04
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#define SDLA_RET_BUF_TOO_BIG 0x05
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#define SDLA_RET_NO_DATA 0x05
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#define SDLA_RET_BUF_OVERSIZE 0x06
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#define SDLA_RET_CIR_OVERFLOW 0x07
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#define SDLA_RET_NO_BUFS 0x08
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#define SDLA_RET_TIMEOUT 0x0A
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#define SDLA_RET_MODEM 0x10
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#define SDLA_RET_CHANNEL_OFF 0x11
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#define SDLA_RET_CHANNEL_ON 0x12
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#define SDLA_RET_DLCI_STATUS 0x13
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#define SDLA_RET_DLCI_UNKNOWN 0x14
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#define SDLA_RET_COMMAND_INVALID 0x1F
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/* Configuration flags */
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#define SDLA_DIRECT_RECV 0x0080
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#define SDLA_TX_NO_EXCEPT 0x0020
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#define SDLA_NO_ICF_MSGS 0x1000
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#define SDLA_TX50_RX50 0x0000
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#define SDLA_TX70_RX30 0x2000
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#define SDLA_TX30_RX70 0x4000
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/* IRQ selection flags */
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#define SDLA_IRQ_RECEIVE 0x01
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#define SDLA_IRQ_TRANSMIT 0x02
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#define SDLA_IRQ_MODEM_STAT 0x04
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#define SDLA_IRQ_COMMAND 0x08
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#define SDLA_IRQ_CHANNEL 0x10
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#define SDLA_IRQ_TIMER 0x20
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/* definitions for PC memory mapping */
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#define SDLA_8K_WINDOW 0x01
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#define SDLA_S502_SEG_A 0x10
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#define SDLA_S502_SEG_C 0x20
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#define SDLA_S502_SEG_D 0x00
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#define SDLA_S502_SEG_E 0x30
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#define SDLA_S507_SEG_A 0x00
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#define SDLA_S507_SEG_B 0x40
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#define SDLA_S507_SEG_C 0x80
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#define SDLA_S507_SEG_E 0xC0
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#define SDLA_S508_SEG_A 0x00
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#define SDLA_S508_SEG_C 0x10
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#define SDLA_S508_SEG_D 0x08
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#define SDLA_S508_SEG_E 0x18
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/* SDLA adapter port constants */
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#define SDLA_IO_EXTENTS 0x04
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#define SDLA_REG_CONTROL 0x00
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#define SDLA_REG_PC_WINDOW 0x01 /* offset for PC window select latch */
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#define SDLA_REG_Z80_WINDOW 0x02 /* offset for Z80 window select latch */
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#define SDLA_REG_Z80_CONTROL 0x03 /* offset for Z80 control latch */
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#define SDLA_S502_STS 0x00 /* status reg for 502, 502E, 507 */
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#define SDLA_S508_GNRL 0x00 /* general purp. reg for 508 */
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#define SDLA_S508_STS 0x01 /* status reg for 508 */
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#define SDLA_S508_IDR 0x02 /* ID reg for 508 */
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/* control register flags */
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#define SDLA_S502A_START 0x00 /* start the CPU */
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#define SDLA_S502A_INTREQ 0x02
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#define SDLA_S502A_INTEN 0x04
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#define SDLA_S502A_HALT 0x08 /* halt the CPU */
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#define SDLA_S502A_NMI 0x10 /* issue an NMI to the CPU */
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#define SDLA_S502E_CPUEN 0x01
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#define SDLA_S502E_ENABLE 0x02
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#define SDLA_S502E_INTACK 0x04
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#define SDLA_S507_ENABLE 0x01
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#define SDLA_S507_IRQ3 0x00
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#define SDLA_S507_IRQ4 0x20
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#define SDLA_S507_IRQ5 0x40
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#define SDLA_S507_IRQ7 0x60
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#define SDLA_S507_IRQ10 0x80
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#define SDLA_S507_IRQ11 0xA0
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#define SDLA_S507_IRQ12 0xC0
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#define SDLA_S507_IRQ15 0xE0
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#define SDLA_HALT 0x00
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#define SDLA_CPUEN 0x02
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#define SDLA_MEMEN 0x04
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#define SDLA_S507_EPROMWR 0x08
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#define SDLA_S507_EPROMCLK 0x10
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#define SDLA_S508_INTRQ 0x08
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#define SDLA_S508_INTEN 0x10
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struct sdla_cmd {
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char opp_flag;
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char cmd;
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short length;
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char retval;
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short dlci;
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char flags;
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short rxlost_int;
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long rxlost_app;
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char reserve[2];
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char data[SDLA_MAX_DATA]; /* transfer data buffer */
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} __attribute__((packed));
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struct intr_info {
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char flags;
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short txlen;
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char irq;
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char flags2;
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short timeout;
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} __attribute__((packed));
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/* found in the 508's control window at RXBUF_INFO */
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struct buf_info {
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unsigned short rse_num;
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unsigned long rse_base;
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unsigned long rse_next;
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unsigned long buf_base;
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unsigned short reserved;
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unsigned long buf_top;
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} __attribute__((packed));
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/* structure pointed to by rse_base in RXBUF_INFO struct */
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struct buf_entry {
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char opp_flag;
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short length;
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short dlci;
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char flags;
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short timestamp;
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short reserved[2];
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long buf_addr;
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} __attribute__((packed));
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#endif
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