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authorLinus Torvalds2005-04-16 15:20:36 -0700
committerLinus Torvalds2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/isdn/pcbit
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/isdn/pcbit')
-rw-r--r--drivers/isdn/pcbit/Kconfig14
-rw-r--r--drivers/isdn/pcbit/Makefile9
-rw-r--r--drivers/isdn/pcbit/callbacks.c367
-rw-r--r--drivers/isdn/pcbit/callbacks.h49
-rw-r--r--drivers/isdn/pcbit/capi.c663
-rw-r--r--drivers/isdn/pcbit/capi.h88
-rw-r--r--drivers/isdn/pcbit/drv.c1088
-rw-r--r--drivers/isdn/pcbit/edss1.c325
-rw-r--r--drivers/isdn/pcbit/edss1.h99
-rw-r--r--drivers/isdn/pcbit/layer2.c732
-rw-r--r--drivers/isdn/pcbit/layer2.h288
-rw-r--r--drivers/isdn/pcbit/module.c130
-rw-r--r--drivers/isdn/pcbit/pcbit.h169
13 files changed, 4021 insertions, 0 deletions
diff --git a/drivers/isdn/pcbit/Kconfig b/drivers/isdn/pcbit/Kconfig
new file mode 100644
index 000000000000..f06997faef16
--- /dev/null
+++ b/drivers/isdn/pcbit/Kconfig
@@ -0,0 +1,14 @@
+#
+# Config.in for PCBIT ISDN driver
+#
+config ISDN_DRV_PCBIT
+ tristate "PCBIT-D support"
+ depends on ISDN_I4L && ISA && (BROKEN || !PPC)
+ help
+ This enables support for the PCBIT ISDN-card. This card is
+ manufactured in Portugal by Octal. For running this card,
+ additional firmware is necessary, which has to be downloaded into
+ the card using a utility which is distributed separately. See
+ <file:Documentation/isdn/README> and
+ <file:Documentation/isdn/README.pcbit> for more information.
+
diff --git a/drivers/isdn/pcbit/Makefile b/drivers/isdn/pcbit/Makefile
new file mode 100644
index 000000000000..2d026c3242e8
--- /dev/null
+++ b/drivers/isdn/pcbit/Makefile
@@ -0,0 +1,9 @@
+# Makefile for the pcbit ISDN device driver
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_ISDN_DRV_PCBIT) += pcbit.o
+
+# Multipart objects.
+
+pcbit-y := module.o edss1.o drv.o layer2.o capi.o callbacks.o
diff --git a/drivers/isdn/pcbit/callbacks.c b/drivers/isdn/pcbit/callbacks.c
new file mode 100644
index 000000000000..692ec72d1ee8
--- /dev/null
+++ b/drivers/isdn/pcbit/callbacks.c
@@ -0,0 +1,367 @@
+/*
+ * Callbacks for the FSM
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+/*
+ * Fix: 19981230 - Carlos Morgado <chbm@techie.com>
+ * Port of Nelson Escravana's <nelson.escravana@usa.net> fix to CalledPN
+ * NULL pointer dereference in cb_in_1 (originally fixed in 2.0)
+ */
+
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/skbuff.h>
+
+#include <asm/io.h>
+
+#include <linux/isdnif.h>
+
+#include "pcbit.h"
+#include "layer2.h"
+#include "edss1.h"
+#include "callbacks.h"
+#include "capi.h"
+
+ushort last_ref_num = 1;
+
+/*
+ * send_conn_req
+ *
+ */
+
+void cb_out_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *cbdata)
+{
+ struct sk_buff *skb;
+ int len;
+ ushort refnum;
+
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "Called Party Number: %s\n",
+ cbdata->data.setup.CalledPN);
+#endif
+ /*
+ * hdr - kmalloc in capi_conn_req
+ * - kfree when msg has been sent
+ */
+
+ if ((len = capi_conn_req(cbdata->data.setup.CalledPN, &skb,
+ chan->proto)) < 0)
+ {
+ printk("capi_conn_req failed\n");
+ return;
+ }
+
+
+ refnum = last_ref_num++ & 0x7fffU;
+
+ chan->callref = 0;
+ chan->layer2link = 0;
+ chan->snum = 0;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_CONN_REQ, refnum, skb, len);
+}
+
+/*
+ * rcv CONNECT
+ * will go into ACTIVE state
+ * send CONN_ACTIVE_RESP
+ * send Select protocol request
+ */
+
+void cb_out_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ isdn_ctrl ictl;
+ struct sk_buff *skb;
+ int len;
+ ushort refnum;
+
+ if ((len=capi_conn_active_resp(chan, &skb)) < 0)
+ {
+ printk("capi_conn_active_req failed\n");
+ return;
+ }
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_CONN_ACTV_RESP, refnum, skb, len);
+
+
+ ictl.command = ISDN_STAT_DCONN;
+ ictl.driver=dev->id;
+ ictl.arg=chan->id;
+ dev->dev_if->statcallb(&ictl);
+
+ /* ACTIVE D-channel */
+
+ /* Select protocol */
+
+ if ((len=capi_select_proto_req(chan, &skb, 1 /*outgoing*/)) < 0) {
+ printk("capi_select_proto_req failed\n");
+ return;
+ }
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
+}
+
+
+/*
+ * Disconnect received (actually RELEASE COMPLETE)
+ * This means we were not able to establish connection with remote
+ * Inform the big boss above
+ */
+void cb_out_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ isdn_ctrl ictl;
+
+ ictl.command = ISDN_STAT_DHUP;
+ ictl.driver=dev->id;
+ ictl.arg=chan->id;
+ dev->dev_if->statcallb(&ictl);
+}
+
+
+/*
+ * Incoming call received
+ * inform user
+ */
+
+void cb_in_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *cbdata)
+{
+ isdn_ctrl ictl;
+ unsigned short refnum;
+ struct sk_buff *skb;
+ int len;
+
+
+ ictl.command = ISDN_STAT_ICALL;
+ ictl.driver=dev->id;
+ ictl.arg=chan->id;
+
+ /*
+ * ictl.num >= strlen() + strlen() + 5
+ */
+
+ if (cbdata->data.setup.CallingPN == NULL) {
+ printk(KERN_DEBUG "NULL CallingPN to phone; using 0\n");
+ strcpy(ictl.parm.setup.phone, "0");
+ }
+ else {
+ strcpy(ictl.parm.setup.phone, cbdata->data.setup.CallingPN);
+ }
+ if (cbdata->data.setup.CalledPN == NULL) {
+ printk(KERN_DEBUG "NULL CalledPN to eazmsn; using 0\n");
+ strcpy(ictl.parm.setup.eazmsn, "0");
+ }
+ else {
+ strcpy(ictl.parm.setup.eazmsn, cbdata->data.setup.CalledPN);
+ }
+ ictl.parm.setup.si1 = 7;
+ ictl.parm.setup.si2 = 0;
+ ictl.parm.setup.plan = 0;
+ ictl.parm.setup.screen = 0;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "statstr: %s\n", ictl.num);
+#endif
+
+ dev->dev_if->statcallb(&ictl);
+
+
+ if ((len=capi_conn_resp(chan, &skb)) < 0) {
+ printk(KERN_DEBUG "capi_conn_resp failed\n");
+ return;
+ }
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_CONN_RESP, refnum, skb, len);
+}
+
+/*
+ * user has replied
+ * open the channel
+ * send CONNECT message CONNECT_ACTIVE_REQ in CAPI
+ */
+
+void cb_in_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ unsigned short refnum;
+ struct sk_buff *skb;
+ int len;
+
+ if ((len = capi_conn_active_req(chan, &skb)) < 0) {
+ printk(KERN_DEBUG "capi_conn_active_req failed\n");
+ return;
+ }
+
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ printk(KERN_DEBUG "sending MSG_CONN_ACTV_REQ\n");
+ pcbit_l2_write(dev, MSG_CONN_ACTV_REQ, refnum, skb, len);
+}
+
+/*
+ * CONN_ACK arrived
+ * start b-proto selection
+ *
+ */
+
+void cb_in_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ unsigned short refnum;
+ struct sk_buff *skb;
+ int len;
+
+ if ((len = capi_select_proto_req(chan, &skb, 0 /*incoming*/)) < 0)
+ {
+ printk("capi_select_proto_req failed\n");
+ return;
+ }
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
+
+}
+
+
+/*
+ * Received disconnect ind on active state
+ * send disconnect resp
+ * send msg to user
+ */
+void cb_disc_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ struct sk_buff *skb;
+ int len;
+ ushort refnum;
+ isdn_ctrl ictl;
+
+ if ((len = capi_disc_resp(chan, &skb)) < 0) {
+ printk("capi_disc_resp failed\n");
+ return;
+ }
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_DISC_RESP, refnum, skb, len);
+
+ ictl.command = ISDN_STAT_BHUP;
+ ictl.driver=dev->id;
+ ictl.arg=chan->id;
+ dev->dev_if->statcallb(&ictl);
+}
+
+
+/*
+ * User HANGUP on active/call proceeding state
+ * send disc.req
+ */
+void cb_disc_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ struct sk_buff *skb;
+ int len;
+ ushort refnum;
+
+ if ((len = capi_disc_req(chan->callref, &skb, CAUSE_NORMAL)) < 0)
+ {
+ printk("capi_disc_req failed\n");
+ return;
+ }
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb, len);
+}
+
+/*
+ * Disc confirm received send BHUP
+ * Problem: when the HL driver sends the disc req itself
+ * LL receives BHUP
+ */
+void cb_disc_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ isdn_ctrl ictl;
+
+ ictl.command = ISDN_STAT_BHUP;
+ ictl.driver=dev->id;
+ ictl.arg=chan->id;
+ dev->dev_if->statcallb(&ictl);
+}
+
+void cb_notdone(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+}
+
+/*
+ * send activate b-chan protocol
+ */
+void cb_selp_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ struct sk_buff *skb;
+ int len;
+ ushort refnum;
+
+ if ((len = capi_activate_transp_req(chan, &skb)) < 0)
+ {
+ printk("capi_conn_activate_transp_req failed\n");
+ return;
+ }
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_ACT_TRANSP_REQ, refnum, skb, len);
+}
+
+/*
+ * Inform User that the B-channel is available
+ */
+void cb_open(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data)
+{
+ isdn_ctrl ictl;
+
+ ictl.command = ISDN_STAT_BCONN;
+ ictl.driver=dev->id;
+ ictl.arg=chan->id;
+ dev->dev_if->statcallb(&ictl);
+}
+
+
+
diff --git a/drivers/isdn/pcbit/callbacks.h b/drivers/isdn/pcbit/callbacks.h
new file mode 100644
index 000000000000..f510dc56b57e
--- /dev/null
+++ b/drivers/isdn/pcbit/callbacks.h
@@ -0,0 +1,49 @@
+/*
+ * Callbacks prototypes for FSM
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+#ifndef CALLBACKS_H
+#define CALLBACKS_H
+
+
+extern void cb_out_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+
+extern void cb_out_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+
+extern void cb_out_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+
+extern void cb_in_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+extern void cb_in_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+extern void cb_in_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+
+extern void cb_disc_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+extern void cb_disc_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+extern void cb_disc_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+
+extern void cb_notdone(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+
+extern void cb_selp_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+extern void cb_open(struct pcbit_dev * dev, struct pcbit_chan* chan,
+ struct callb_data *data);
+
+#endif
+
+
diff --git a/drivers/isdn/pcbit/capi.c b/drivers/isdn/pcbit/capi.c
new file mode 100644
index 000000000000..29eb03a8c29d
--- /dev/null
+++ b/drivers/isdn/pcbit/capi.c
@@ -0,0 +1,663 @@
+/*
+ * CAPI encoder/decoder for
+ * Portugal Telecom CAPI 2.0
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ *
+ * Not compatible with the AVM Gmbh. CAPI 2.0
+ *
+ */
+
+/*
+ * Documentation:
+ * - "Common ISDN API - Perfil Português - Versão 2.1",
+ * Telecom Portugal, Fev 1992.
+ * - "Common ISDN API - Especificação de protocolos para
+ * acesso aos canais B", Inesc, Jan 1994.
+ */
+
+/*
+ * TODO: better decoding of Information Elements
+ * for debug purposes mainly
+ * encode our number in CallerPN and ConnectedPN
+ */
+
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+
+#include <linux/skbuff.h>
+
+#include <asm/io.h>
+#include <asm/string.h>
+
+#include <linux/isdnif.h>
+
+#include "pcbit.h"
+#include "edss1.h"
+#include "capi.h"
+
+
+/*
+ * Encoding of CAPI messages
+ *
+ */
+
+int capi_conn_req(const char * calledPN, struct sk_buff **skb, int proto)
+{
+ ushort len;
+
+ /*
+ * length
+ * AppInfoMask - 2
+ * BC0 - 3
+ * BC1 - 1
+ * Chan - 2
+ * Keypad - 1
+ * CPN - 1
+ * CPSA - 1
+ * CalledPN - 2 + strlen
+ * CalledPSA - 1
+ * rest... - 4
+ * ----------------
+ * Total 18 + strlen
+ */
+
+ len = 18 + strlen(calledPN);
+
+ if (proto == ISDN_PROTO_L2_TRANS)
+ len++;
+
+ if ((*skb = dev_alloc_skb(len)) == NULL) {
+
+ printk(KERN_WARNING "capi_conn_req: alloc_skb failed\n");
+ return -1;
+ }
+
+ /* InfoElmMask */
+ *((ushort*) skb_put(*skb, 2)) = AppInfoMask;
+
+ if (proto == ISDN_PROTO_L2_TRANS)
+ {
+ /* Bearer Capability - Mandatory*/
+ *(skb_put(*skb, 1)) = 3; /* BC0.Length */
+ *(skb_put(*skb, 1)) = 0x80; /* Speech */
+ *(skb_put(*skb, 1)) = 0x10; /* Circuit Mode */
+ *(skb_put(*skb, 1)) = 0x23; /* A-law */
+ }
+ else
+ {
+ /* Bearer Capability - Mandatory*/
+ *(skb_put(*skb, 1)) = 2; /* BC0.Length */
+ *(skb_put(*skb, 1)) = 0x88; /* Digital Information */
+ *(skb_put(*skb, 1)) = 0x90; /* BC0.Octect4 */
+ }
+
+ /* Bearer Capability - Optional*/
+ *(skb_put(*skb, 1)) = 0; /* BC1.Length = 0 */
+
+ *(skb_put(*skb, 1)) = 1; /* ChannelID.Length = 1 */
+ *(skb_put(*skb, 1)) = 0x83; /* Basic Interface - Any Channel */
+
+ *(skb_put(*skb, 1)) = 0; /* Keypad.Length = 0 */
+
+
+ *(skb_put(*skb, 1)) = 0; /* CallingPN.Length = 0 */
+ *(skb_put(*skb, 1)) = 0; /* CallingPSA.Length = 0 */
+
+ /* Called Party Number */
+ *(skb_put(*skb, 1)) = strlen(calledPN) + 1;
+ *(skb_put(*skb, 1)) = 0x81;
+ memcpy(skb_put(*skb, strlen(calledPN)), calledPN, strlen(calledPN));
+
+ /* '#' */
+
+ *(skb_put(*skb, 1)) = 0; /* CalledPSA.Length = 0 */
+
+ /* LLC.Length = 0; */
+ /* HLC0.Length = 0; */
+ /* HLC1.Length = 0; */
+ /* UTUS.Length = 0; */
+ memset(skb_put(*skb, 4), 0, 4);
+
+ return len;
+}
+
+int capi_conn_resp(struct pcbit_chan* chan, struct sk_buff **skb)
+{
+
+ if ((*skb = dev_alloc_skb(5)) == NULL) {
+
+ printk(KERN_WARNING "capi_conn_resp: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2) ) = chan->callref;
+ *(skb_put(*skb, 1)) = 0x01; /* ACCEPT_CALL */
+ *(skb_put(*skb, 1)) = 0;
+ *(skb_put(*skb, 1)) = 0;
+
+ return 5;
+}
+
+int capi_conn_active_req(struct pcbit_chan* chan, struct sk_buff **skb)
+{
+ /*
+ * 8 bytes
+ */
+
+ if ((*skb = dev_alloc_skb(8)) == NULL) {
+
+ printk(KERN_WARNING "capi_conn_active_req: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2) ) = chan->callref;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "Call Reference: %04x\n", chan->callref);
+#endif
+
+ *(skb_put(*skb, 1)) = 0; /* BC.Length = 0; */
+ *(skb_put(*skb, 1)) = 0; /* ConnectedPN.Length = 0 */
+ *(skb_put(*skb, 1)) = 0; /* PSA.Length */
+ *(skb_put(*skb, 1)) = 0; /* LLC.Length = 0; */
+ *(skb_put(*skb, 1)) = 0; /* HLC.Length = 0; */
+ *(skb_put(*skb, 1)) = 0; /* UTUS.Length = 0; */
+
+ return 8;
+}
+
+int capi_conn_active_resp(struct pcbit_chan* chan, struct sk_buff **skb)
+{
+ /*
+ * 2 bytes
+ */
+
+ if ((*skb = dev_alloc_skb(2)) == NULL) {
+
+ printk(KERN_WARNING "capi_conn_active_resp: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2) ) = chan->callref;
+
+ return 2;
+}
+
+
+int capi_select_proto_req(struct pcbit_chan *chan, struct sk_buff **skb,
+ int outgoing)
+{
+
+ /*
+ * 18 bytes
+ */
+
+ if ((*skb = dev_alloc_skb(18)) == NULL) {
+
+ printk(KERN_WARNING "capi_select_proto_req: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2) ) = chan->callref;
+
+ /* Layer2 protocol */
+
+ switch (chan->proto) {
+ case ISDN_PROTO_L2_X75I:
+ *(skb_put(*skb, 1)) = 0x05; /* LAPB */
+ break;
+ case ISDN_PROTO_L2_HDLC:
+ *(skb_put(*skb, 1)) = 0x02;
+ break;
+ case ISDN_PROTO_L2_TRANS:
+ /*
+ * Voice (a-law)
+ */
+ *(skb_put(*skb, 1)) = 0x06;
+ break;
+ default:
+#ifdef DEBUG
+ printk(KERN_DEBUG "Transparent\n");
+#endif
+ *(skb_put(*skb, 1)) = 0x03;
+ break;
+ }
+
+ *(skb_put(*skb, 1)) = (outgoing ? 0x02 : 0x42); /* Don't ask */
+ *(skb_put(*skb, 1)) = 0x00;
+
+ *((ushort *) skb_put(*skb, 2)) = MRU;
+
+
+ *(skb_put(*skb, 1)) = 0x08; /* Modulo */
+ *(skb_put(*skb, 1)) = 0x07; /* Max Window */
+
+ *(skb_put(*skb, 1)) = 0x01; /* No Layer3 Protocol */
+
+ /*
+ * 2 - layer3 MTU [10]
+ * - Modulo [12]
+ * - Window
+ * - layer1 proto [14]
+ * - bitrate
+ * - sub-channel [16]
+ * - layer1dataformat [17]
+ */
+
+ memset(skb_put(*skb, 8), 0, 8);
+
+ return 18;
+}
+
+
+int capi_activate_transp_req(struct pcbit_chan *chan, struct sk_buff **skb)
+{
+
+ if ((*skb = dev_alloc_skb(7)) == NULL) {
+
+ printk(KERN_WARNING "capi_activate_transp_req: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2) ) = chan->callref;
+
+
+ *(skb_put(*skb, 1)) = chan->layer2link; /* Layer2 id */
+ *(skb_put(*skb, 1)) = 0x00; /* Transmit by default */
+
+ *((ushort *) skb_put(*skb, 2)) = MRU;
+
+ *(skb_put(*skb, 1)) = 0x01; /* Enables reception*/
+
+ return 7;
+}
+
+int capi_tdata_req(struct pcbit_chan* chan, struct sk_buff *skb)
+{
+ ushort data_len;
+
+
+ /*
+ * callref - 2
+ * layer2link - 1
+ * wBlockLength - 2
+ * data - 4
+ * sernum - 1
+ */
+
+ data_len = skb->len;
+
+ if(skb_headroom(skb) < 10)
+ {
+ printk(KERN_CRIT "No headspace (%u) on headroom %p for capi header\n", skb_headroom(skb), skb);
+ }
+ else
+ {
+ skb_push(skb, 10);
+ }
+
+ *((u16 *) (skb->data)) = chan->callref;
+ skb->data[2] = chan->layer2link;
+ *((u16 *) (skb->data + 3)) = data_len;
+
+ chan->s_refnum = (chan->s_refnum + 1) % 8;
+ *((u32 *) (skb->data + 5)) = chan->s_refnum;
+
+ skb->data[9] = 0; /* HDLC frame number */
+
+ return 10;
+}
+
+int capi_tdata_resp(struct pcbit_chan *chan, struct sk_buff ** skb)
+
+{
+ if ((*skb = dev_alloc_skb(4)) == NULL) {
+
+ printk(KERN_WARNING "capi_tdata_resp: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2) ) = chan->callref;
+
+ *(skb_put(*skb, 1)) = chan->layer2link;
+ *(skb_put(*skb, 1)) = chan->r_refnum;
+
+ return (*skb)->len;
+}
+
+int capi_disc_req(ushort callref, struct sk_buff **skb, u_char cause)
+{
+
+ if ((*skb = dev_alloc_skb(6)) == NULL) {
+
+ printk(KERN_WARNING "capi_disc_req: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2) ) = callref;
+
+ *(skb_put(*skb, 1)) = 2; /* Cause.Length = 2; */
+ *(skb_put(*skb, 1)) = 0x80;
+ *(skb_put(*skb, 1)) = 0x80 | cause;
+
+ /*
+ * Change it: we should send 'Sic transit gloria Mundi' here ;-)
+ */
+
+ *(skb_put(*skb, 1)) = 0; /* UTUS.Length = 0; */
+
+ return 6;
+}
+
+int capi_disc_resp(struct pcbit_chan *chan, struct sk_buff **skb)
+{
+ if ((*skb = dev_alloc_skb(2)) == NULL) {
+
+ printk(KERN_WARNING "capi_disc_resp: alloc_skb failed\n");
+ return -1;
+ }
+
+ *((ushort*) skb_put(*skb, 2)) = chan->callref;
+
+ return 2;
+}
+
+
+/*
+ * Decoding of CAPI messages
+ *
+ */
+
+int capi_decode_conn_ind(struct pcbit_chan * chan,
+ struct sk_buff *skb,
+ struct callb_data *info)
+{
+ int CIlen, len;
+
+ /* Call Reference [CAPI] */
+ chan->callref = *((ushort*) skb->data);
+ skb_pull(skb, 2);
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "Call Reference: %04x\n", chan->callref);
+#endif
+
+ /* Channel Identification */
+
+ /* Expect
+ Len = 1
+ Octect 3 = 0100 10CC - [ 7 Basic, 4 , 2-1 chan ]
+ */
+
+ CIlen = skb->data[0];
+#ifdef DEBUG
+ if (CIlen == 1) {
+
+ if ( ((skb->data[1]) & 0xFC) == 0x48 )
+ printk(KERN_DEBUG "decode_conn_ind: chan ok\n");
+ printk(KERN_DEBUG "phyChan = %d\n", skb->data[1] & 0x03);
+ }
+ else
+ printk(KERN_DEBUG "conn_ind: CIlen = %d\n", CIlen);
+#endif
+ skb_pull(skb, CIlen + 1);
+
+ /* Calling Party Number */
+ /* An "additional service" as far as Portugal Telecom is concerned */
+
+ len = skb->data[0];
+
+ if (len > 0) {
+ int count = 1;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "CPN: Octect 3 %02x\n", skb->data[1]);
+#endif
+ if ((skb->data[1] & 0x80) == 0)
+ count = 2;
+
+ if (!(info->data.setup.CallingPN = kmalloc(len - count + 1, GFP_ATOMIC)))
+ return -1;
+
+ memcpy(info->data.setup.CallingPN, skb->data + count + 1,
+ len - count);
+ info->data.setup.CallingPN[len - count] = 0;
+
+ }
+ else {
+ info->data.setup.CallingPN = NULL;
+ printk(KERN_DEBUG "NULL CallingPN\n");
+ }
+
+ skb_pull(skb, len + 1);
+
+ /* Calling Party Subaddress */
+ skb_pull(skb, skb->data[0] + 1);
+
+ /* Called Party Number */
+
+ len = skb->data[0];
+
+ if (len > 0) {
+ int count = 1;
+
+ if ((skb->data[1] & 0x80) == 0)
+ count = 2;
+
+ if (!(info->data.setup.CalledPN = kmalloc(len - count + 1, GFP_ATOMIC)))
+ return -1;
+
+ memcpy(info->data.setup.CalledPN, skb->data + count + 1,
+ len - count);
+ info->data.setup.CalledPN[len - count] = 0;
+
+ }
+ else {
+ info->data.setup.CalledPN = NULL;
+ printk(KERN_DEBUG "NULL CalledPN\n");
+ }
+
+ skb_pull(skb, len + 1);
+
+ /* Called Party Subaddress */
+ skb_pull(skb, skb->data[0] + 1);
+
+ /* LLC */
+ skb_pull(skb, skb->data[0] + 1);
+
+ /* HLC */
+ skb_pull(skb, skb->data[0] + 1);
+
+ /* U2U */
+ skb_pull(skb, skb->data[0] + 1);
+
+ return 0;
+}
+
+/*
+ * returns errcode
+ */
+
+int capi_decode_conn_conf(struct pcbit_chan * chan, struct sk_buff *skb,
+ int *complete)
+{
+ int errcode;
+
+ chan->callref = *((ushort *) skb->data); /* Update CallReference */
+ skb_pull(skb, 2);
+
+ errcode = *((ushort *) skb->data); /* read errcode */
+ skb_pull(skb, 2);
+
+ *complete = *(skb->data);
+ skb_pull(skb, 1);
+
+ /* FIX ME */
+ /* This is actually a firmware bug */
+ if (!*complete)
+ {
+ printk(KERN_DEBUG "complete=%02x\n", *complete);
+ *complete = 1;
+ }
+
+
+ /* Optional Bearer Capability */
+ skb_pull(skb, *(skb->data) + 1);
+
+ /* Channel Identification */
+ skb_pull(skb, *(skb->data) + 1);
+
+ /* High Layer Compatibility follows */
+ skb_pull(skb, *(skb->data) + 1);
+
+ return errcode;
+}
+
+int capi_decode_conn_actv_ind(struct pcbit_chan * chan, struct sk_buff *skb)
+{
+ ushort len;
+#ifdef DEBUG
+ char str[32];
+#endif
+
+ /* Yet Another Bearer Capability */
+ skb_pull(skb, *(skb->data) + 1);
+
+
+ /* Connected Party Number */
+ len=*(skb->data);
+
+#ifdef DEBUG
+ if (len > 1 && len < 31) {
+ memcpy(str, skb->data + 2, len - 1);
+ str[len] = 0;
+ printk(KERN_DEBUG "Connected Party Number: %s\n", str);
+ }
+ else
+ printk(KERN_DEBUG "actv_ind CPN len = %d\n", len);
+#endif
+
+ skb_pull(skb, len + 1);
+
+ /* Connected Subaddress */
+ skb_pull(skb, *(skb->data) + 1);
+
+ /* Low Layer Capability */
+ skb_pull(skb, *(skb->data) + 1);
+
+ /* High Layer Capability */
+ skb_pull(skb, *(skb->data) + 1);
+
+ return 0;
+}
+
+int capi_decode_conn_actv_conf(struct pcbit_chan * chan, struct sk_buff *skb)
+{
+ ushort errcode;
+
+ errcode = *((ushort*) skb->data);
+ skb_pull(skb, 2);
+
+ /* Channel Identification
+ skb_pull(skb, skb->data[0] + 1);
+ */
+ return errcode;
+}
+
+
+int capi_decode_sel_proto_conf(struct pcbit_chan *chan, struct sk_buff *skb)
+{
+ ushort errcode;
+
+ chan->layer2link = *(skb->data);
+ skb_pull(skb, 1);
+
+ errcode = *((ushort*) skb->data);
+ skb_pull(skb, 2);
+
+ return errcode;
+}
+
+int capi_decode_actv_trans_conf(struct pcbit_chan *chan, struct sk_buff *skb)
+{
+ ushort errcode;
+
+ if (chan->layer2link != *(skb->data) )
+ printk("capi_decode_actv_trans_conf: layer2link doesn't match\n");
+
+ skb_pull(skb, 1);
+
+ errcode = *((ushort*) skb->data);
+ skb_pull(skb, 2);
+
+ return errcode;
+}
+
+int capi_decode_disc_ind(struct pcbit_chan *chan, struct sk_buff *skb)
+{
+ ushort len;
+#ifdef DEBUG
+ int i;
+#endif
+ /* Cause */
+
+ len = *(skb->data);
+ skb_pull(skb, 1);
+
+#ifdef DEBUG
+
+ for (i=0; i<len; i++)
+ printk(KERN_DEBUG "Cause Octect %d: %02x\n", i+3,
+ *(skb->data + i));
+#endif
+
+ skb_pull(skb, len);
+
+ return 0;
+}
+
+int capi_decode_disc_conf(struct pcbit_chan *chan, struct sk_buff *skb)
+{
+ ushort errcode;
+
+ errcode = *((ushort*) skb->data);
+ skb_pull(skb, 2);
+
+ return errcode;
+}
+
+#ifdef DEBUG
+int capi_decode_debug_188(u_char *hdr, ushort hdrlen)
+{
+ char str[64];
+ int len;
+
+ len = hdr[0];
+
+ if (len < 64 && len == hdrlen - 1) {
+ memcpy(str, hdr + 1, hdrlen - 1);
+ str[hdrlen - 1] = 0;
+ printk("%s\n", str);
+ }
+ else
+ printk("debug message incorrect\n");
+
+ return 0;
+}
+#endif
+
+
+
+
+
diff --git a/drivers/isdn/pcbit/capi.h b/drivers/isdn/pcbit/capi.h
new file mode 100644
index 000000000000..18e6aa360a8f
--- /dev/null
+++ b/drivers/isdn/pcbit/capi.h
@@ -0,0 +1,88 @@
+/*
+ * CAPI encode/decode prototypes and defines
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+#ifndef CAPI_H
+#define CAPI_H
+
+
+#define REQ_CAUSE 0x01
+#define REQ_DISPLAY 0x04
+#define REQ_USER_TO_USER 0x08
+
+#define AppInfoMask REQ_CAUSE|REQ_DISPLAY|REQ_USER_TO_USER
+
+/* Connection Setup */
+extern int capi_conn_req(const char * calledPN, struct sk_buff **buf,
+ int proto);
+extern int capi_decode_conn_conf(struct pcbit_chan * chan, struct sk_buff *skb,
+ int *complete);
+
+extern int capi_decode_conn_ind(struct pcbit_chan * chan, struct sk_buff *skb,
+ struct callb_data *info);
+extern int capi_conn_resp(struct pcbit_chan* chan, struct sk_buff **skb);
+
+extern int capi_conn_active_req(struct pcbit_chan* chan, struct sk_buff **skb);
+extern int capi_decode_conn_actv_conf(struct pcbit_chan * chan,
+ struct sk_buff *skb);
+
+extern int capi_decode_conn_actv_ind(struct pcbit_chan * chan,
+ struct sk_buff *skb);
+extern int capi_conn_active_resp(struct pcbit_chan* chan,
+ struct sk_buff **skb);
+
+/* Data */
+extern int capi_select_proto_req(struct pcbit_chan *chan, struct sk_buff **skb,
+ int outgoing);
+extern int capi_decode_sel_proto_conf(struct pcbit_chan *chan,
+ struct sk_buff *skb);
+
+extern int capi_activate_transp_req(struct pcbit_chan *chan,
+ struct sk_buff **skb);
+extern int capi_decode_actv_trans_conf(struct pcbit_chan *chan,
+ struct sk_buff *skb);
+
+extern int capi_tdata_req(struct pcbit_chan* chan, struct sk_buff *skb);
+extern int capi_tdata_resp(struct pcbit_chan *chan, struct sk_buff ** skb);
+
+/* Connection Termination */
+extern int capi_disc_req(ushort callref, struct sk_buff **skb, u_char cause);
+extern int capi_decode_disc_conf(struct pcbit_chan *chan, struct sk_buff *skb);
+
+extern int capi_decode_disc_ind(struct pcbit_chan *chan, struct sk_buff *skb);
+extern int capi_disc_resp(struct pcbit_chan *chan, struct sk_buff **skb);
+
+#ifdef DEBUG
+extern int capi_decode_debug_188(u_char *hdr, ushort hdrlen);
+#endif
+
+static inline struct pcbit_chan *
+capi_channel(struct pcbit_dev *dev, struct sk_buff *skb)
+{
+ ushort callref;
+
+ callref = *((ushort*) skb->data);
+ skb_pull(skb, 2);
+
+ if (dev->b1->callref == callref)
+ return dev->b1;
+ else if (dev->b2->callref == callref)
+ return dev->b2;
+
+ return NULL;
+}
+
+#endif
+
+
+
+
+
+
diff --git a/drivers/isdn/pcbit/drv.c b/drivers/isdn/pcbit/drv.c
new file mode 100644
index 000000000000..e98f9c48c184
--- /dev/null
+++ b/drivers/isdn/pcbit/drv.c
@@ -0,0 +1,1088 @@
+/*
+ * PCBIT-D interface with isdn4linux
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+/*
+ * Fixes:
+ *
+ * Nuno Grilo <l38486@alfa.ist.utl.pt>
+ * fixed msn_list NULL pointer dereference.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/sched.h>
+
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/skbuff.h>
+
+#include <linux/isdnif.h>
+#include <asm/string.h>
+#include <asm/io.h>
+#include <linux/ioport.h>
+
+#include "pcbit.h"
+#include "edss1.h"
+#include "layer2.h"
+#include "capi.h"
+
+
+extern ushort last_ref_num;
+
+static int pcbit_ioctl(isdn_ctrl* ctl);
+
+static char* pcbit_devname[MAX_PCBIT_CARDS] = {
+ "pcbit0",
+ "pcbit1",
+ "pcbit2",
+ "pcbit3"
+};
+
+/*
+ * prototypes
+ */
+
+int pcbit_command(isdn_ctrl* ctl);
+int pcbit_stat(u_char __user * buf, int len, int, int);
+int pcbit_xmit(int driver, int chan, int ack, struct sk_buff *skb);
+int pcbit_writecmd(const u_char __user *, int, int, int);
+
+static int set_protocol_running(struct pcbit_dev * dev);
+
+static void pcbit_clear_msn(struct pcbit_dev *dev);
+static void pcbit_set_msn(struct pcbit_dev *dev, char *list);
+static int pcbit_check_msn(struct pcbit_dev *dev, char *msn);
+
+
+extern void pcbit_deliver(void * data);
+
+int pcbit_init_dev(int board, int mem_base, int irq)
+{
+ struct pcbit_dev *dev;
+ isdn_if *dev_if;
+
+ if ((dev=kmalloc(sizeof(struct pcbit_dev), GFP_KERNEL)) == NULL)
+ {
+ printk("pcbit_init: couldn't malloc pcbit_dev struct\n");
+ return -ENOMEM;
+ }
+
+ dev_pcbit[board] = dev;
+ memset(dev, 0, sizeof(struct pcbit_dev));
+ init_waitqueue_head(&dev->set_running_wq);
+ spin_lock_init(&dev->lock);
+
+ if (mem_base >= 0xA0000 && mem_base <= 0xFFFFF ) {
+ dev->ph_mem = mem_base;
+ if (!request_mem_region(dev->ph_mem, 4096, "PCBIT mem")) {
+ printk(KERN_WARNING
+ "PCBIT: memory region %lx-%lx already in use\n",
+ dev->ph_mem, dev->ph_mem + 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EACCES;
+ }
+ dev->sh_mem = ioremap(dev->ph_mem, 4096);
+ }
+ else
+ {
+ printk("memory address invalid");
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EACCES;
+ }
+
+ dev->b1 = kmalloc(sizeof(struct pcbit_chan), GFP_KERNEL);
+ if (!dev->b1) {
+ printk("pcbit_init: couldn't malloc pcbit_chan struct\n");
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ return -ENOMEM;
+ }
+
+ dev->b2 = kmalloc(sizeof(struct pcbit_chan), GFP_KERNEL);
+ if (!dev->b2) {
+ printk("pcbit_init: couldn't malloc pcbit_chan struct\n");
+ kfree(dev->b1);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ return -ENOMEM;
+ }
+
+ memset(dev->b1, 0, sizeof(struct pcbit_chan));
+ memset(dev->b2, 0, sizeof(struct pcbit_chan));
+ dev->b2->id = 1;
+
+ INIT_WORK(&dev->qdelivery, pcbit_deliver, dev);
+
+ /*
+ * interrupts
+ */
+
+ if (request_irq(irq, &pcbit_irq_handler, 0, pcbit_devname[board], dev) != 0)
+ {
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EIO;
+ }
+
+ dev->irq = irq;
+
+ /* next frame to be received */
+ dev->rcv_seq = 0;
+ dev->send_seq = 0;
+ dev->unack_seq = 0;
+
+ dev->hl_hdrlen = 16;
+
+ dev_if = kmalloc(sizeof(isdn_if), GFP_KERNEL);
+
+ if (!dev_if) {
+ free_irq(irq, dev);
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EIO;
+ }
+
+ dev->dev_if = dev_if;
+
+ dev_if->owner = THIS_MODULE;
+
+ dev_if->channels = 2;
+
+ dev_if->features = (ISDN_FEATURE_P_EURO | ISDN_FEATURE_L3_TRANS |
+ ISDN_FEATURE_L2_HDLC | ISDN_FEATURE_L2_TRANS );
+
+ dev_if->writebuf_skb = pcbit_xmit;
+ dev_if->hl_hdrlen = 16;
+
+ dev_if->maxbufsize = MAXBUFSIZE;
+ dev_if->command = pcbit_command;
+
+ dev_if->writecmd = pcbit_writecmd;
+ dev_if->readstat = pcbit_stat;
+
+
+ strcpy(dev_if->id, pcbit_devname[board]);
+
+ if (!register_isdn(dev_if)) {
+ free_irq(irq, dev);
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ dev_pcbit[board] = NULL;
+ return -EIO;
+ }
+
+ dev->id = dev_if->channels;
+
+
+ dev->l2_state = L2_DOWN;
+ dev->free = 511;
+
+ /*
+ * set_protocol_running(dev);
+ */
+
+ return 0;
+}
+
+#ifdef MODULE
+void pcbit_terminate(int board)
+{
+ struct pcbit_dev * dev;
+
+ dev = dev_pcbit[board];
+
+ if (dev) {
+ /* unregister_isdn(dev->dev_if); */
+ free_irq(dev->irq, dev);
+ pcbit_clear_msn(dev);
+ kfree(dev->dev_if);
+ if (dev->b1->fsm_timer.function)
+ del_timer(&dev->b1->fsm_timer);
+ if (dev->b2->fsm_timer.function)
+ del_timer(&dev->b2->fsm_timer);
+ kfree(dev->b1);
+ kfree(dev->b2);
+ iounmap(dev->sh_mem);
+ release_mem_region(dev->ph_mem, 4096);
+ kfree(dev);
+ }
+}
+#endif
+
+int pcbit_command(isdn_ctrl* ctl)
+{
+ struct pcbit_dev *dev;
+ struct pcbit_chan *chan;
+ struct callb_data info;
+
+ dev = finddev(ctl->driver);
+
+ if (!dev)
+ {
+ printk("pcbit_command: unknown device\n");
+ return -1;
+ }
+
+ chan = (ctl->arg & 0x0F) ? dev->b2 : dev->b1;
+
+
+ switch(ctl->command) {
+ case ISDN_CMD_IOCTL:
+ return pcbit_ioctl(ctl);
+ break;
+ case ISDN_CMD_DIAL:
+ info.type = EV_USR_SETUP_REQ;
+ info.data.setup.CalledPN = (char *) &ctl->parm.setup.phone;
+ pcbit_fsm_event(dev, chan, EV_USR_SETUP_REQ, &info);
+ break;
+ case ISDN_CMD_ACCEPTD:
+ pcbit_fsm_event(dev, chan, EV_USR_SETUP_RESP, NULL);
+ break;
+ case ISDN_CMD_ACCEPTB:
+ printk("ISDN_CMD_ACCEPTB - not really needed\n");
+ break;
+ case ISDN_CMD_HANGUP:
+ pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL);
+ break;
+ case ISDN_CMD_SETL2:
+ chan->proto = (ctl->arg >> 8);
+ break;
+ case ISDN_CMD_CLREAZ:
+ pcbit_clear_msn(dev);
+ break;
+ case ISDN_CMD_SETEAZ:
+ pcbit_set_msn(dev, ctl->parm.num);
+ break;
+ case ISDN_CMD_SETL3:
+ if ((ctl->arg >> 8) != ISDN_PROTO_L3_TRANS)
+ printk(KERN_DEBUG "L3 protocol unknown\n");
+ break;
+ default:
+ printk(KERN_DEBUG "pcbit_command: unknown command\n");
+ break;
+ };
+
+ return 0;
+}
+
+/*
+ * Another Hack :-(
+ * on some conditions the board stops sending TDATA_CONFs
+ * let's see if we can turn around the problem
+ */
+
+#ifdef BLOCK_TIMER
+static void pcbit_block_timer(unsigned long data)
+{
+ struct pcbit_chan *chan;
+ struct pcbit_dev * dev;
+ isdn_ctrl ictl;
+
+ chan = (struct pcbit_chan *) data;
+
+ dev = chan2dev(chan);
+
+ if (dev == NULL) {
+ printk(KERN_DEBUG "pcbit: chan2dev failed\n");
+ return;
+ }
+
+ del_timer(&chan->block_timer);
+ chan->block_timer.function = NULL;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "pcbit_block_timer\n");
+#endif
+ chan->queued = 0;
+ ictl.driver = dev->id;
+ ictl.command = ISDN_STAT_BSENT;
+ ictl.arg = chan->id;
+ dev->dev_if->statcallb(&ictl);
+}
+#endif
+
+int pcbit_xmit(int driver, int chnum, int ack, struct sk_buff *skb)
+{
+ ushort hdrlen;
+ int refnum, len;
+ struct pcbit_chan * chan;
+ struct pcbit_dev *dev;
+
+ dev = finddev(driver);
+ if (dev == NULL)
+ {
+ printk("finddev returned NULL");
+ return -1;
+ }
+
+ chan = chnum ? dev->b2 : dev->b1;
+
+
+ if (chan->fsm_state != ST_ACTIVE)
+ return -1;
+
+ if (chan->queued >= MAX_QUEUED )
+ {
+#ifdef DEBUG_QUEUE
+ printk(KERN_DEBUG
+ "pcbit: %d packets already in queue - write fails\n",
+ chan->queued);
+#endif
+ /*
+ * packet stays on the head of the device queue
+ * since dev_start_xmit will fail
+ * see net/core/dev.c
+ */
+#ifdef BLOCK_TIMER
+ if (chan->block_timer.function == NULL) {
+ init_timer(&chan->block_timer);
+ chan->block_timer.function = &pcbit_block_timer;
+ chan->block_timer.data = (long) chan;
+ chan->block_timer.expires = jiffies + 1 * HZ;
+ add_timer(&chan->block_timer);
+ }
+#endif
+ return 0;
+ }
+
+
+ chan->queued++;
+
+ len = skb->len;
+
+ hdrlen = capi_tdata_req(chan, skb);
+
+ refnum = last_ref_num++ & 0x7fffU;
+ chan->s_refnum = refnum;
+
+ pcbit_l2_write(dev, MSG_TDATA_REQ, refnum, skb, hdrlen);
+
+ return len;
+}
+
+int pcbit_writecmd(const u_char __user *buf, int len, int driver, int channel)
+{
+ struct pcbit_dev * dev;
+ int i, j;
+ const u_char * loadbuf;
+ u_char * ptr = NULL;
+ u_char *cbuf;
+
+ int errstat;
+
+ dev = finddev(driver);
+
+ if (!dev)
+ {
+ printk("pcbit_writecmd: couldn't find device");
+ return -ENODEV;
+ }
+
+ switch(dev->l2_state) {
+ case L2_LWMODE:
+ /* check (size <= rdp_size); write buf into board */
+ if (len < 0 || len > BANK4 + 1 || len > 1024)
+ {
+ printk("pcbit_writecmd: invalid length %d\n", len);
+ return -EINVAL;
+ }
+
+ cbuf = kmalloc(len, GFP_KERNEL);
+ if (!cbuf)
+ return -ENOMEM;
+
+ if (copy_from_user(cbuf, buf, len)) {
+ kfree(cbuf);
+ return -EFAULT;
+ }
+ memcpy_toio(dev->sh_mem, cbuf, len);
+ kfree(cbuf);
+ return len;
+ case L2_FWMODE:
+ /* this is the hard part */
+ /* dumb board */
+ /* get it into kernel space */
+ if ((ptr = kmalloc(len, GFP_KERNEL))==NULL)
+ return -ENOMEM;
+ if (copy_from_user(ptr, buf, len)) {
+ kfree(ptr);
+ return -EFAULT;
+ }
+ loadbuf = ptr;
+
+ errstat = 0;
+
+ for (i=0; i < len; i++)
+ {
+ for(j=0; j < LOAD_RETRY; j++)
+ if (!(readb(dev->sh_mem + dev->loadptr)))
+ break;
+
+ if (j == LOAD_RETRY)
+ {
+ errstat = -ETIME;
+ printk("TIMEOUT i=%d\n", i);
+ break;
+ }
+ writeb(loadbuf[i], dev->sh_mem + dev->loadptr + 1);
+ writeb(0x01, dev->sh_mem + dev->loadptr);
+
+ dev->loadptr += 2;
+ if (dev->loadptr > LOAD_ZONE_END)
+ dev->loadptr = LOAD_ZONE_START;
+ }
+ kfree(ptr);
+
+ return errstat ? errstat : len;
+ default:
+ return -EBUSY;
+ }
+}
+
+/*
+ * demultiplexing of messages
+ *
+ */
+
+void pcbit_l3_receive(struct pcbit_dev * dev, ulong msg,
+ struct sk_buff * skb,
+ ushort hdr_len, ushort refnum)
+{
+ struct pcbit_chan *chan;
+ struct sk_buff *skb2;
+ unsigned short len;
+ struct callb_data cbdata;
+ int complete, err;
+ isdn_ctrl ictl;
+
+ switch(msg) {
+
+ case MSG_TDATA_IND:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+ chan->r_refnum = skb->data[7];
+ skb_pull(skb, 8);
+
+ dev->dev_if->rcvcallb_skb(dev->id, chan->id, skb);
+
+ if (capi_tdata_resp(chan, &skb2) > 0)
+ pcbit_l2_write(dev, MSG_TDATA_RESP, refnum,
+ skb2, skb2->len);
+ return;
+ break;
+ case MSG_TDATA_CONF:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+#ifdef DEBUG
+ if ( (*((ushort *) (skb->data + 2) )) != 0) {
+ printk(KERN_DEBUG "TDATA_CONF error\n");
+ }
+#endif
+#ifdef BLOCK_TIMER
+ if (chan->queued == MAX_QUEUED) {
+ del_timer(&chan->block_timer);
+ chan->block_timer.function = NULL;
+ }
+
+#endif
+ chan->queued--;
+
+ ictl.driver = dev->id;
+ ictl.command = ISDN_STAT_BSENT;
+ ictl.arg = chan->id;
+ dev->dev_if->statcallb(&ictl);
+ break;
+
+ case MSG_CONN_IND:
+ /*
+ * channel: 1st not used will do
+ * if both are used we're in trouble
+ */
+
+ if (!dev->b1->fsm_state)
+ chan = dev->b1;
+ else if (!dev->b2->fsm_state)
+ chan = dev->b2;
+ else {
+ printk(KERN_INFO
+ "Incoming connection: no channels available");
+
+ if ((len = capi_disc_req(*(ushort*)(skb->data), &skb2, CAUSE_NOCHAN)) > 0)
+ pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb2, len);
+ break;
+ }
+
+ cbdata.data.setup.CalledPN = NULL;
+ cbdata.data.setup.CallingPN = NULL;
+
+ capi_decode_conn_ind(chan, skb, &cbdata);
+ cbdata.type = EV_NET_SETUP;
+
+ pcbit_fsm_event(dev, chan, EV_NET_SETUP, NULL);
+
+ if (pcbit_check_msn(dev, cbdata.data.setup.CallingPN))
+ pcbit_fsm_event(dev, chan, EV_USR_PROCED_REQ, &cbdata);
+ else
+ pcbit_fsm_event(dev, chan, EV_USR_RELEASE_REQ, NULL);
+
+ if (cbdata.data.setup.CalledPN)
+ kfree(cbdata.data.setup.CalledPN);
+ if (cbdata.data.setup.CallingPN)
+ kfree(cbdata.data.setup.CallingPN);
+ break;
+
+ case MSG_CONN_CONF:
+ /*
+ * We should be able to find the channel by the message
+ * reference number. The current version of the firmware
+ * doesn't sent the ref number correctly.
+ */
+#ifdef DEBUG
+ printk(KERN_DEBUG "refnum=%04x b1=%04x b2=%04x\n", refnum,
+ dev->b1->s_refnum,
+ dev->b2->s_refnum);
+#endif
+ /* We just try to find a channel in the right state */
+
+ if (dev->b1->fsm_state == ST_CALL_INIT)
+ chan = dev->b1;
+ else {
+ if (dev->b2->s_refnum == ST_CALL_INIT)
+ chan = dev->b2;
+ else {
+ chan = NULL;
+ printk(KERN_WARNING "Connection Confirm - no channel in Call Init state\n");
+ break;
+ }
+ }
+ if (capi_decode_conn_conf(chan, skb, &complete)) {
+ printk(KERN_DEBUG "conn_conf indicates error\n");
+ pcbit_fsm_event(dev, chan, EV_ERROR, NULL);
+ }
+ else
+ if (complete)
+ pcbit_fsm_event(dev, chan, EV_NET_CALL_PROC, NULL);
+ else
+ pcbit_fsm_event(dev, chan, EV_NET_SETUP_ACK, NULL);
+ break;
+ case MSG_CONN_ACTV_IND:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (capi_decode_conn_actv_ind(chan, skb)) {
+ printk("error in capi_decode_conn_actv_ind\n");
+ /* pcbit_fsm_event(dev, chan, EV_ERROR, NULL); */
+ break;
+ }
+ chan->r_refnum = refnum;
+ pcbit_fsm_event(dev, chan, EV_NET_CONN, NULL);
+ break;
+ case MSG_CONN_ACTV_CONF:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (capi_decode_conn_actv_conf(chan, skb) == 0)
+ pcbit_fsm_event(dev, chan, EV_NET_CONN_ACK, NULL);
+
+ else
+ printk(KERN_DEBUG "decode_conn_actv_conf failed\n");
+ break;
+
+ case MSG_SELP_CONF:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!(err = capi_decode_sel_proto_conf(chan, skb)))
+ pcbit_fsm_event(dev, chan, EV_NET_SELP_RESP, NULL);
+ else {
+ /* Error */
+ printk("error %d - capi_decode_sel_proto_conf\n", err);
+ }
+ break;
+ case MSG_ACT_TRANSP_CONF:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!capi_decode_actv_trans_conf(chan, skb))
+ pcbit_fsm_event(dev, chan, EV_NET_ACTV_RESP, NULL);
+ break;
+
+ case MSG_DISC_IND:
+
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!capi_decode_disc_ind(chan, skb))
+ pcbit_fsm_event(dev, chan, EV_NET_DISC, NULL);
+ else
+ printk(KERN_WARNING "capi_decode_disc_ind - error\n");
+ break;
+ case MSG_DISC_CONF:
+ if (!(chan = capi_channel(dev, skb))) {
+ printk(KERN_WARNING
+ "CAPI header: unknown channel id\n");
+ break;
+ }
+
+ if (!capi_decode_disc_ind(chan, skb))
+ pcbit_fsm_event(dev, chan, EV_NET_RELEASE, NULL);
+ else
+ printk(KERN_WARNING "capi_decode_disc_conf - error\n");
+ break;
+ case MSG_INFO_IND:
+#ifdef DEBUG
+ printk(KERN_DEBUG "received Info Indication - discarded\n");
+#endif
+ break;
+#ifdef DEBUG
+ case MSG_DEBUG_188:
+ capi_decode_debug_188(skb->data, skb->len);
+ break;
+
+ default:
+ printk(KERN_DEBUG "pcbit_l3_receive: unknown message %08lx\n",
+ msg);
+ break;
+#endif
+ }
+
+ kfree_skb(skb);
+
+}
+
+/*
+ * Single statbuf
+ * should be a statbuf per device
+ */
+
+static char statbuf[STATBUF_LEN];
+static int stat_st = 0;
+static int stat_end = 0;
+
+int pcbit_stat(u_char __user *buf, int len, int driver, int channel)
+{
+ int stat_count;
+ stat_count = stat_end - stat_st;
+
+ if (stat_count < 0)
+ stat_count = STATBUF_LEN - stat_st + stat_end;
+
+ /* FIXME: should we sleep and wait for more cookies ? */
+ if (len > stat_count)
+ len = stat_count;
+
+ if (stat_st < stat_end)
+ {
+ copy_to_user(buf, statbuf + stat_st, len);
+ stat_st += len;
+ }
+ else
+ {
+ if (len > STATBUF_LEN - stat_st)
+ {
+ copy_to_user(buf, statbuf + stat_st,
+ STATBUF_LEN - stat_st);
+ copy_to_user(buf, statbuf,
+ len - (STATBUF_LEN - stat_st));
+
+ stat_st = len - (STATBUF_LEN - stat_st);
+ }
+ else
+ {
+ copy_to_user(buf, statbuf + stat_st, len);
+
+ stat_st += len;
+
+ if (stat_st == STATBUF_LEN)
+ stat_st = 0;
+ }
+ }
+
+ if (stat_st == stat_end)
+ stat_st = stat_end = 0;
+
+ return len;
+}
+
+static void pcbit_logstat(struct pcbit_dev *dev, char *str)
+{
+ int i;
+ isdn_ctrl ictl;
+
+ for (i=stat_end; i<strlen(str); i++)
+ {
+ statbuf[i]=str[i];
+ stat_end = (stat_end + 1) % STATBUF_LEN;
+ if (stat_end == stat_st)
+ stat_st = (stat_st + 1) % STATBUF_LEN;
+ }
+
+ ictl.command=ISDN_STAT_STAVAIL;
+ ictl.driver=dev->id;
+ ictl.arg=strlen(str);
+ dev->dev_if->statcallb(&ictl);
+}
+
+extern char * isdn_state_table[];
+extern char * strisdnevent(unsigned short);
+
+
+void pcbit_state_change(struct pcbit_dev * dev, struct pcbit_chan * chan,
+ unsigned short i, unsigned short ev, unsigned short f)
+{
+ char buf[256];
+
+ sprintf(buf, "change on device: %d channel:%d\n%s -> %s -> %s\n",
+ dev->id, chan->id,
+ isdn_state_table[i], strisdnevent(ev), isdn_state_table[f]
+ );
+
+#ifdef DEBUG
+ printk("%s", buf);
+#endif
+
+ pcbit_logstat(dev, buf);
+}
+
+static void set_running_timeout(unsigned long ptr)
+{
+ struct pcbit_dev * dev;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "set_running_timeout\n");
+#endif
+ dev = (struct pcbit_dev *) ptr;
+
+ wake_up_interruptible(&dev->set_running_wq);
+}
+
+static int set_protocol_running(struct pcbit_dev * dev)
+{
+ isdn_ctrl ctl;
+
+ init_timer(&dev->set_running_timer);
+
+ dev->set_running_timer.function = &set_running_timeout;
+ dev->set_running_timer.data = (ulong) dev;
+ dev->set_running_timer.expires = jiffies + SET_RUN_TIMEOUT;
+
+ /* kick it */
+
+ dev->l2_state = L2_STARTING;
+
+ writeb((0x80U | ((dev->rcv_seq & 0x07) << 3) | (dev->send_seq & 0x07)),
+ dev->sh_mem + BANK4);
+
+ add_timer(&dev->set_running_timer);
+
+ interruptible_sleep_on(&dev->set_running_wq);
+
+ del_timer(&dev->set_running_timer);
+
+ if (dev->l2_state == L2_RUNNING)
+ {
+ printk(KERN_DEBUG "pcbit: running\n");
+
+ dev->unack_seq = dev->send_seq;
+
+ dev->writeptr = dev->sh_mem;
+ dev->readptr = dev->sh_mem + BANK2;
+
+ /* tell the good news to the upper layer */
+ ctl.driver = dev->id;
+ ctl.command = ISDN_STAT_RUN;
+
+ dev->dev_if->statcallb(&ctl);
+ }
+ else
+ {
+ printk(KERN_DEBUG "pcbit: initialization failed\n");
+ printk(KERN_DEBUG "pcbit: firmware not loaded\n");
+
+ dev->l2_state = L2_DOWN;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "Bank3 = %02x\n",
+ readb(dev->sh_mem + BANK3));
+#endif
+ writeb(0x40, dev->sh_mem + BANK4);
+
+ /* warn the upper layer */
+ ctl.driver = dev->id;
+ ctl.command = ISDN_STAT_STOP;
+
+ dev->dev_if->statcallb(&ctl);
+
+ return -EL2HLT; /* Level 2 halted */
+ }
+
+ return 0;
+}
+
+static int pcbit_ioctl(isdn_ctrl* ctl)
+{
+ struct pcbit_dev * dev;
+ struct pcbit_ioctl *cmd;
+
+ dev = finddev(ctl->driver);
+
+ if (!dev)
+ {
+ printk(KERN_DEBUG "pcbit_ioctl: unknown device\n");
+ return -ENODEV;
+ }
+
+ cmd = (struct pcbit_ioctl *) ctl->parm.num;
+
+ switch(ctl->arg) {
+ case PCBIT_IOCTL_GETSTAT:
+ cmd->info.l2_status = dev->l2_state;
+ break;
+
+ case PCBIT_IOCTL_STRLOAD:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+
+ dev->unack_seq = dev->send_seq = dev->rcv_seq = 0;
+
+ dev->writeptr = dev->sh_mem;
+ dev->readptr = dev->sh_mem + BANK2;
+
+ dev->l2_state = L2_LOADING;
+ break;
+
+ case PCBIT_IOCTL_LWMODE:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+
+ dev->l2_state = L2_LWMODE;
+ break;
+
+ case PCBIT_IOCTL_FWMODE:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+ dev->loadptr = LOAD_ZONE_START;
+ dev->l2_state = L2_FWMODE;
+
+ break;
+ case PCBIT_IOCTL_ENDLOAD:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+ dev->l2_state = L2_DOWN;
+ break;
+
+ case PCBIT_IOCTL_SETBYTE:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+
+ /* check addr */
+ if (cmd->info.rdp_byte.addr > BANK4)
+ return -EFAULT;
+
+ writeb(cmd->info.rdp_byte.value, dev->sh_mem + cmd->info.rdp_byte.addr);
+ break;
+ case PCBIT_IOCTL_GETBYTE:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+
+ /* check addr */
+
+ if (cmd->info.rdp_byte.addr > BANK4)
+ {
+ printk("getbyte: invalid addr %04x\n", cmd->info.rdp_byte.addr);
+ return -EFAULT;
+ }
+
+ cmd->info.rdp_byte.value = readb(dev->sh_mem + cmd->info.rdp_byte.addr);
+ break;
+ case PCBIT_IOCTL_RUNNING:
+ if (dev->l2_state == L2_RUNNING)
+ return -EBUSY;
+ return set_protocol_running(dev);
+ break;
+ case PCBIT_IOCTL_WATCH188:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+ pcbit_l2_write(dev, MSG_WATCH188, 0x0001, NULL, 0);
+ break;
+ case PCBIT_IOCTL_PING188:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+ pcbit_l2_write(dev, MSG_PING188_REQ, 0x0001, NULL, 0);
+ break;
+ case PCBIT_IOCTL_APION:
+ if (dev->l2_state != L2_LOADING)
+ return -EINVAL;
+ pcbit_l2_write(dev, MSG_API_ON, 0x0001, NULL, 0);
+ break;
+ case PCBIT_IOCTL_STOP:
+ dev->l2_state = L2_DOWN;
+ writeb(0x40, dev->sh_mem + BANK4);
+ dev->rcv_seq = 0;
+ dev->send_seq = 0;
+ dev->unack_seq = 0;
+ break;
+ default:
+ printk("error: unknown ioctl\n");
+ break;
+ };
+ return 0;
+}
+
+/*
+ * MSN list handling
+ *
+ * if null reject all calls
+ * if first entry has null MSN accept all calls
+ */
+
+static void pcbit_clear_msn(struct pcbit_dev *dev)
+{
+ struct msn_entry *ptr, *back;
+
+ for (ptr=dev->msn_list; ptr; )
+ {
+ back = ptr->next;
+ kfree(ptr);
+ ptr = back;
+ }
+
+ dev->msn_list = NULL;
+}
+
+static void pcbit_set_msn(struct pcbit_dev *dev, char *list)
+{
+ struct msn_entry *ptr;
+ struct msn_entry *back = NULL;
+ char *cp, *sp;
+ int len;
+
+ if (strlen(list) == 0) {
+ ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC);
+ if (!ptr) {
+ printk(KERN_WARNING "kmalloc failed\n");
+ return;
+ }
+
+ ptr->msn = NULL;
+
+ ptr->next = dev->msn_list;
+ dev->msn_list = ptr;
+
+ return;
+ }
+
+ if (dev->msn_list)
+ for (back=dev->msn_list; back->next; back=back->next);
+
+ sp = list;
+
+ do {
+ cp=strchr(sp, ',');
+ if (cp)
+ len = cp - sp;
+ else
+ len = strlen(sp);
+
+ ptr = kmalloc(sizeof(struct msn_entry), GFP_ATOMIC);
+
+ if (!ptr) {
+ printk(KERN_WARNING "kmalloc failed\n");
+ return;
+ }
+ ptr->next = NULL;
+
+ ptr->msn = kmalloc(len, GFP_ATOMIC);
+ if (!ptr->msn) {
+ printk(KERN_WARNING "kmalloc failed\n");
+ kfree(ptr);
+ return;
+ }
+
+ memcpy(ptr->msn, sp, len - 1);
+ ptr->msn[len] = 0;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "msn: %s\n", ptr->msn);
+#endif
+ if (dev->msn_list == NULL)
+ dev->msn_list = ptr;
+ else
+ back->next = ptr;
+ back = ptr;
+ sp += len;
+ } while(cp);
+}
+
+/*
+ * check if we do signal or reject an incoming call
+ */
+static int pcbit_check_msn(struct pcbit_dev *dev, char *msn)
+{
+ struct msn_entry *ptr;
+
+ for (ptr=dev->msn_list; ptr; ptr=ptr->next) {
+
+ if (ptr->msn == NULL)
+ return 1;
+
+ if (strcmp(ptr->msn, msn) == 0)
+ return 1;
+ }
+
+ return 0;
+}
diff --git a/drivers/isdn/pcbit/edss1.c b/drivers/isdn/pcbit/edss1.c
new file mode 100644
index 000000000000..93ca7de5670b
--- /dev/null
+++ b/drivers/isdn/pcbit/edss1.c
@@ -0,0 +1,325 @@
+/*
+ * DSS.1 Finite State Machine
+ * base: ITU-T Rec Q.931
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+/*
+ * TODO: complete the FSM
+ * move state/event descriptions to a user space logger
+ */
+
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/skbuff.h>
+
+#include <linux/timer.h>
+#include <asm/io.h>
+
+#include <linux/isdnif.h>
+
+#include "pcbit.h"
+#include "edss1.h"
+#include "layer2.h"
+#include "callbacks.h"
+
+
+extern void pcbit_state_change(struct pcbit_dev *, struct pcbit_chan *,
+ unsigned short i, unsigned short ev,
+ unsigned short f);
+
+extern struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];
+
+char * isdn_state_table[] = {
+ "Closed",
+ "Call initiated",
+ "Overlap sending",
+ "Outgoing call proceeding",
+ "NOT DEFINED",
+ "Call delivered",
+ "Call present",
+ "Call received",
+ "Connect request",
+ "Incoming call proceeding",
+ "Active",
+ "Disconnect request",
+ "Disconnect indication",
+ "NOT DEFINED",
+ "NOT DEFINED",
+ "Suspend request",
+ "NOT DEFINED",
+ "Resume request",
+ "NOT DEFINED",
+ "Release Request",
+ "NOT DEFINED",
+ "NOT DEFINED",
+ "NOT DEFINED",
+ "NOT DEFINED",
+ "NOT DEFINED",
+ "Overlap receiving",
+ "Select protocol on B-Channel",
+ "Activate B-channel protocol"
+};
+
+#ifdef DEBUG_ERRS
+static
+struct CauseValue {
+ byte nr;
+ char *descr;
+} cvlist[]={
+ {0x01,"Unallocated (unassigned) number"},
+ {0x02,"No route to specified transit network"},
+ {0x03,"No route to destination"},
+ {0x04,"Send special information tone"},
+ {0x05,"Misdialled trunk prefix"},
+ {0x06,"Channel unacceptable"},
+ {0x07,"Channel awarded and being delivered in an established channel"},
+ {0x08,"Preemption"},
+ {0x09,"Preemption - circuit reserved for reuse"},
+ {0x10,"Normal call clearing"},
+ {0x11,"User busy"},
+ {0x12,"No user responding"},
+ {0x13,"No answer from user (user alerted)"},
+ {0x14,"Subscriber absent"},
+ {0x15,"Call rejected"},
+ {0x16,"Number changed"},
+ {0x1a,"non-selected user clearing"},
+ {0x1b,"Destination out of order"},
+ {0x1c,"Invalid number format (address incomplete)"},
+ {0x1d,"Facility rejected"},
+ {0x1e,"Response to Status enquiry"},
+ {0x1f,"Normal, unspecified"},
+ {0x22,"No circuit/channel available"},
+ {0x26,"Network out of order"},
+ {0x27,"Permanent frame mode connection out-of-service"},
+ {0x28,"Permanent frame mode connection operational"},
+ {0x29,"Temporary failure"},
+ {0x2a,"Switching equipment congestion"},
+ {0x2b,"Access information discarded"},
+ {0x2c,"Requested circuit/channel not available"},
+ {0x2e,"Precedence call blocked"},
+ {0x2f,"Resource unavailable, unspecified"},
+ {0x31,"Quality of service unavailable"},
+ {0x32,"Requested facility not subscribed"},
+ {0x35,"Outgoing calls barred within CUG"},
+ {0x37,"Incoming calls barred within CUG"},
+ {0x39,"Bearer capability not authorized"},
+ {0x3a,"Bearer capability not presently available"},
+ {0x3e,"Inconsistency in designated outgoing access information and subscriber class"},
+ {0x3f,"Service or option not available, unspecified"},
+ {0x41,"Bearer capability not implemented"},
+ {0x42,"Channel type not implemented"},
+ {0x43,"Requested facility not implemented"},
+ {0x44,"Only restricted digital information bearer capability is available"},
+ {0x4f,"Service or option not implemented"},
+ {0x51,"Invalid call reference value"},
+ {0x52,"Identified channel does not exist"},
+ {0x53,"A suspended call exists, but this call identity does not"},
+ {0x54,"Call identity in use"},
+ {0x55,"No call suspended"},
+ {0x56,"Call having the requested call identity has been cleared"},
+ {0x57,"User not member of CUG"},
+ {0x58,"Incompatible destination"},
+ {0x5a,"Non-existent CUG"},
+ {0x5b,"Invalid transit network selection"},
+ {0x5f,"Invalid message, unspecified"},
+ {0x60,"Mandatory information element is missing"},
+ {0x61,"Message type non-existent or not implemented"},
+ {0x62,"Message not compatible with call state or message type non-existent or not implemented"},
+ {0x63,"Information element/parameter non-existent or not implemented"},
+ {0x64,"Invalid information element contents"},
+ {0x65,"Message not compatible with call state"},
+ {0x66,"Recovery on timer expiry"},
+ {0x67,"Parameter non-existent or not implemented - passed on"},
+ {0x6e,"Message with unrecognized parameter discarded"},
+ {0x6f,"Protocol error, unspecified"},
+ {0x7f,"Interworking, unspecified"}
+};
+
+#endif
+
+static struct isdn_event_desc {
+ unsigned short ev;
+ char * desc;
+} isdn_event_table [] = {
+ {EV_USR_SETUP_REQ, "CC->L3: Setup Request"},
+ {EV_USR_SETUP_RESP, "CC->L3: Setup Response"},
+ {EV_USR_PROCED_REQ, "CC->L3: Proceeding Request"},
+ {EV_USR_RELEASE_REQ, "CC->L3: Release Request"},
+
+ {EV_NET_SETUP, "NET->TE: setup "},
+ {EV_NET_CALL_PROC, "NET->TE: call proceeding"},
+ {EV_NET_SETUP_ACK, "NET->TE: setup acknowledge (more info needed)"},
+ {EV_NET_CONN, "NET->TE: connect"},
+ {EV_NET_CONN_ACK, "NET->TE: connect acknowledge"},
+ {EV_NET_DISC, "NET->TE: disconnect indication"},
+ {EV_NET_RELEASE, "NET->TE: release"},
+ {EV_NET_RELEASE_COMP, "NET->TE: release complete"},
+ {EV_NET_SELP_RESP, "Board: Select B-channel protocol ack"},
+ {EV_NET_ACTV_RESP, "Board: Activate B-channel protocol ack"},
+ {EV_TIMER, "Timeout"},
+ {0, "NULL"}
+};
+
+char * strisdnevent(ushort ev)
+{
+ struct isdn_event_desc * entry;
+
+ for (entry = isdn_event_table; entry->ev; entry++)
+ if (entry->ev == ev)
+ break;
+
+ return entry->desc;
+}
+
+/*
+ * Euro ISDN finite state machine
+ */
+
+static struct fsm_timer_entry fsm_timers[] = {
+ {ST_CALL_PROC, 10},
+ {ST_DISC_REQ, 2},
+ {ST_ACTIVE_SELP, 5},
+ {ST_ACTIVE_ACTV, 5},
+ {ST_INCM_PROC, 10},
+ {ST_CONN_REQ, 2},
+ {0xff, 0}
+};
+
+static struct fsm_entry fsm_table[] = {
+/* Connect Phase */
+ /* Outgoing */
+ {ST_NULL, ST_CALL_INIT, EV_USR_SETUP_REQ, cb_out_1},
+
+ {ST_CALL_INIT, ST_OVER_SEND, EV_NET_SETUP_ACK, cb_notdone},
+ {ST_CALL_INIT, ST_CALL_PROC, EV_NET_CALL_PROC, NULL},
+ {ST_CALL_INIT, ST_NULL, EV_NET_DISC, cb_out_2},
+
+ {ST_CALL_PROC, ST_ACTIVE_SELP, EV_NET_CONN, cb_out_2},
+ {ST_CALL_PROC, ST_NULL, EV_NET_DISC, cb_disc_1},
+ {ST_CALL_PROC, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2},
+
+ /* Incoming */
+ {ST_NULL, ST_CALL_PRES, EV_NET_SETUP, NULL},
+
+ {ST_CALL_PRES, ST_INCM_PROC, EV_USR_PROCED_REQ, cb_in_1},
+ {ST_CALL_PRES, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2},
+
+ {ST_INCM_PROC, ST_CONN_REQ, EV_USR_SETUP_RESP, cb_in_2},
+ {ST_INCM_PROC, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2},
+
+ {ST_CONN_REQ, ST_ACTIVE_SELP, EV_NET_CONN_ACK, cb_in_3},
+
+ /* Active */
+ {ST_ACTIVE, ST_NULL, EV_NET_DISC, cb_disc_1},
+ {ST_ACTIVE, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2},
+ {ST_ACTIVE, ST_NULL, EV_NET_RELEASE, cb_disc_3},
+
+ /* Disconnect */
+
+ {ST_DISC_REQ, ST_NULL, EV_NET_DISC, cb_disc_1},
+ {ST_DISC_REQ, ST_NULL, EV_NET_RELEASE, cb_disc_3},
+
+ /* protocol selection */
+ {ST_ACTIVE_SELP, ST_ACTIVE_ACTV, EV_NET_SELP_RESP, cb_selp_1},
+ {ST_ACTIVE_SELP, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2},
+
+ {ST_ACTIVE_ACTV, ST_ACTIVE, EV_NET_ACTV_RESP, cb_open},
+ {ST_ACTIVE_ACTV, ST_DISC_REQ, EV_USR_RELEASE_REQ, cb_disc_2},
+
+ /* Timers */
+ {ST_CALL_PROC, ST_DISC_REQ, EV_TIMER, cb_disc_2},
+ {ST_DISC_REQ, ST_NULL, EV_TIMER, cb_disc_3},
+ {ST_ACTIVE_SELP, ST_DISC_REQ, EV_TIMER, cb_disc_2},
+ {ST_ACTIVE_ACTV, ST_DISC_REQ, EV_TIMER, cb_disc_2},
+ {ST_INCM_PROC, ST_DISC_REQ, EV_TIMER, cb_disc_2},
+ {ST_CONN_REQ, ST_CONN_REQ, EV_TIMER, cb_in_2},
+
+ {0xff, 0, 0, NULL}
+};
+
+
+static void pcbit_fsm_timer(unsigned long data)
+{
+ struct pcbit_dev *dev;
+ struct pcbit_chan *chan;
+
+ chan = (struct pcbit_chan *) data;
+
+ del_timer(&chan->fsm_timer);
+ chan->fsm_timer.function = NULL;
+
+ dev = chan2dev(chan);
+
+ if (dev == NULL) {
+ printk(KERN_WARNING "pcbit: timer for unknown device\n");
+ return;
+ }
+
+ pcbit_fsm_event(dev, chan, EV_TIMER, NULL);
+}
+
+
+void pcbit_fsm_event(struct pcbit_dev *dev, struct pcbit_chan *chan,
+ unsigned short event, struct callb_data *data)
+{
+ struct fsm_entry * action;
+ struct fsm_timer_entry *tentry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ for (action = fsm_table; action->init != 0xff; action++)
+ if (action->init == chan->fsm_state && action->event == event)
+ break;
+
+ if (action->init == 0xff) {
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+ printk(KERN_DEBUG "fsm error: event %x on state %x\n",
+ event, chan->fsm_state);
+ return;
+ }
+
+ if (chan->fsm_timer.function) {
+ del_timer(&chan->fsm_timer);
+ chan->fsm_timer.function = NULL;
+ }
+
+ chan->fsm_state = action->final;
+
+ pcbit_state_change(dev, chan, action->init, event, action->final);
+
+ for (tentry = fsm_timers; tentry->init != 0xff; tentry++)
+ if (tentry->init == chan->fsm_state)
+ break;
+
+ if (tentry->init != 0xff) {
+ init_timer(&chan->fsm_timer);
+ chan->fsm_timer.function = &pcbit_fsm_timer;
+ chan->fsm_timer.data = (ulong) chan;
+ chan->fsm_timer.expires = jiffies + tentry->timeout * HZ;
+ add_timer(&chan->fsm_timer);
+ }
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ if (action->callb)
+ action->callb(dev, chan, data);
+
+}
+
+
+
+
diff --git a/drivers/isdn/pcbit/edss1.h b/drivers/isdn/pcbit/edss1.h
new file mode 100644
index 000000000000..6bb587005b86
--- /dev/null
+++ b/drivers/isdn/pcbit/edss1.h
@@ -0,0 +1,99 @@
+/*
+ * DSS.1 module definitions
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+#ifndef EDSS1_H
+#define EDSS1_H
+
+/* ISDN states */
+
+#define ST_NULL 0
+#define ST_CALL_INIT 1 /* Call initiated */
+#define ST_OVER_SEND 2 /* Overlap sending - Requests More Info 4 call */
+#define ST_CALL_PROC 3 /* Call Proceeding */
+#define ST_CALL_DELV 4
+#define ST_CALL_PRES 6 /* Call Present - Received CONN.IND */
+#define ST_CALL_RECV 7 /* Alerting sent */
+#define ST_CONN_REQ 8 /* Answered - waiting 4 CONN.CONF */
+#define ST_INCM_PROC 9
+#define ST_ACTIVE 10
+#define ST_DISC_REQ 11
+#define ST_DISC_IND 12
+#define ST_SUSP_REQ 15
+#define ST_RESM_REQ 17
+#define ST_RELS_REQ 19
+#define ST_OVER_RECV 25
+
+#define ST_ACTIVE_SELP 26 /* Select protocol on B-Channel */
+#define ST_ACTIVE_ACTV 27 /* Activate B-channel protocol */
+
+#define MAX_STATE ST_ACTIVE_ACTV
+
+#define EV_NULL 0
+#define EV_USR_SETUP_REQ 1
+#define EV_USR_SETUP_RESP 2
+#define EV_USR_PROCED_REQ 3
+#define EV_USR_RELEASE_REQ 4
+#define EV_USR_REJECT_REQ 4
+
+#define EV_NET_SETUP 16
+#define EV_NET_CALL_PROC 17
+#define EV_NET_SETUP_ACK 18
+#define EV_NET_CONN 19
+#define EV_NET_CONN_ACK 20
+
+#define EV_NET_SELP_RESP 21
+#define EV_NET_ACTV_RESP 22
+
+#define EV_NET_DISC 23
+#define EV_NET_RELEASE 24
+#define EV_NET_RELEASE_COMP 25
+
+#define EV_TIMER 26
+#define EV_ERROR 32
+
+/*
+ * Cause values
+ * only the ones we use
+ */
+
+#define CAUSE_NORMAL 0x10U
+#define CAUSE_NOCHAN 0x22U
+
+struct callb_data {
+ unsigned short type;
+ union {
+ struct ConnInfo {
+ char *CalledPN;
+ char *CallingPN;
+ } setup;
+ unsigned short cause;
+ } data;
+};
+
+struct fsm_entry {
+ unsigned short init;
+ unsigned short final;
+ unsigned short event;
+ void (*callb)(struct pcbit_dev *, struct pcbit_chan *, struct callb_data*);
+};
+
+struct fsm_timer_entry {
+ unsigned short init;
+ unsigned long timeout; /* in seconds */
+};
+
+
+extern void pcbit_fsm_event(struct pcbit_dev *, struct pcbit_chan *,
+ unsigned short event, struct callb_data *);
+#endif
+
+
+
diff --git a/drivers/isdn/pcbit/layer2.c b/drivers/isdn/pcbit/layer2.c
new file mode 100644
index 000000000000..ba766930f088
--- /dev/null
+++ b/drivers/isdn/pcbit/layer2.c
@@ -0,0 +1,732 @@
+/*
+ * PCBIT-D low-layer interface
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+/*
+ * 19991203 - Fernando Carvalho - takion@superbofh.org
+ * Hacked to compile with egcs and run with current version of isdn modules
+*/
+
+/*
+ * Based on documentation provided by Inesc:
+ * - "Interface com bus do PC para o PCBIT e PCBIT-D", Inesc, Jan 93
+ */
+
+/*
+ * TODO: better handling of errors
+ * re-write/remove debug printks
+ */
+
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/mm.h>
+#include <linux/skbuff.h>
+
+#include <linux/isdnif.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+
+#include "pcbit.h"
+#include "layer2.h"
+#include "edss1.h"
+
+#undef DEBUG_FRAG
+
+
+
+/*
+ * task queue struct
+ */
+
+
+
+/*
+ * Layer 3 packet demultiplexer
+ * drv.c
+ */
+
+extern void pcbit_l3_receive(struct pcbit_dev *dev, ulong msg,
+ struct sk_buff *skb,
+ ushort hdr_len, ushort refnum);
+
+/*
+ * Prototypes
+ */
+
+void pcbit_deliver(void *data);
+static void pcbit_transmit(struct pcbit_dev *dev);
+
+static void pcbit_recv_ack(struct pcbit_dev *dev, unsigned char ack);
+
+static void pcbit_l2_error(struct pcbit_dev *dev);
+static void pcbit_l2_active_conf(struct pcbit_dev *dev, u_char info);
+static void pcbit_l2_err_recover(unsigned long data);
+
+static void pcbit_firmware_bug(struct pcbit_dev *dev);
+
+static __inline__ void
+pcbit_sched_delivery(struct pcbit_dev *dev)
+{
+ schedule_work(&dev->qdelivery);
+}
+
+
+/*
+ * Called from layer3
+ */
+
+int
+pcbit_l2_write(struct pcbit_dev *dev, ulong msg, ushort refnum,
+ struct sk_buff *skb, unsigned short hdr_len)
+{
+ struct frame_buf *frame,
+ *ptr;
+ unsigned long flags;
+
+ if (dev->l2_state != L2_RUNNING && dev->l2_state != L2_LOADING) {
+ dev_kfree_skb(skb);
+ return -1;
+ }
+ if ((frame = (struct frame_buf *) kmalloc(sizeof(struct frame_buf),
+ GFP_ATOMIC)) == NULL) {
+ printk(KERN_WARNING "pcbit_2_write: kmalloc failed\n");
+ dev_kfree_skb(skb);
+ return -1;
+ }
+ frame->msg = msg;
+ frame->refnum = refnum;
+ frame->copied = 0;
+ frame->hdr_len = hdr_len;
+
+ if (skb)
+ frame->dt_len = skb->len - hdr_len;
+ else
+ frame->dt_len = 0;
+
+ frame->skb = skb;
+
+ frame->next = NULL;
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ if (dev->write_queue == NULL) {
+ dev->write_queue = frame;
+ spin_unlock_irqrestore(&dev->lock, flags);
+ pcbit_transmit(dev);
+ } else {
+ for (ptr = dev->write_queue; ptr->next; ptr = ptr->next);
+ ptr->next = frame;
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+ }
+ return 0;
+}
+
+static __inline__ void
+pcbit_tx_update(struct pcbit_dev *dev, ushort len)
+{
+ u_char info;
+
+ dev->send_seq = (dev->send_seq + 1) % 8;
+
+ dev->fsize[dev->send_seq] = len;
+ info = 0;
+ info |= dev->rcv_seq << 3;
+ info |= dev->send_seq;
+
+ writeb(info, dev->sh_mem + BANK4);
+
+}
+
+/*
+ * called by interrupt service routine or by write_2
+ */
+
+static void
+pcbit_transmit(struct pcbit_dev *dev)
+{
+ struct frame_buf *frame = NULL;
+ unsigned char unacked;
+ int flen; /* fragment frame length including all headers */
+ int free;
+ int count,
+ cp_len;
+ unsigned long flags;
+ unsigned short tt;
+
+ if (dev->l2_state != L2_RUNNING && dev->l2_state != L2_LOADING)
+ return;
+
+ unacked = (dev->send_seq + (8 - dev->unack_seq)) & 0x07;
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ if (dev->free > 16 && dev->write_queue && unacked < 7) {
+
+ if (!dev->w_busy)
+ dev->w_busy = 1;
+ else {
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return;
+ }
+
+
+ frame = dev->write_queue;
+ free = dev->free;
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ if (frame->copied == 0) {
+
+ /* Type 0 frame */
+
+ ulong msg;
+
+ if (frame->skb)
+ flen = FRAME_HDR_LEN + PREHDR_LEN + frame->skb->len;
+ else
+ flen = FRAME_HDR_LEN + PREHDR_LEN;
+
+ if (flen > free)
+ flen = free;
+
+ msg = frame->msg;
+
+ /*
+ * Board level 2 header
+ */
+
+ pcbit_writew(dev, flen - FRAME_HDR_LEN);
+
+ pcbit_writeb(dev, GET_MSG_CPU(msg));
+
+ pcbit_writeb(dev, GET_MSG_PROC(msg));
+
+ /* TH */
+ pcbit_writew(dev, frame->hdr_len + PREHDR_LEN);
+
+ /* TD */
+ pcbit_writew(dev, frame->dt_len);
+
+
+ /*
+ * Board level 3 fixed-header
+ */
+
+ /* LEN = TH */
+ pcbit_writew(dev, frame->hdr_len + PREHDR_LEN);
+
+ /* XX */
+ pcbit_writew(dev, 0);
+
+ /* C + S */
+ pcbit_writeb(dev, GET_MSG_CMD(msg));
+ pcbit_writeb(dev, GET_MSG_SCMD(msg));
+
+ /* NUM */
+ pcbit_writew(dev, frame->refnum);
+
+ count = FRAME_HDR_LEN + PREHDR_LEN;
+ } else {
+ /* Type 1 frame */
+
+ flen = 2 + (frame->skb->len - frame->copied);
+
+ if (flen > free)
+ flen = free;
+
+ /* TT */
+ tt = ((ushort) (flen - 2)) | 0x8000U; /* Type 1 */
+ pcbit_writew(dev, tt);
+
+ count = 2;
+ }
+
+ if (frame->skb) {
+ cp_len = frame->skb->len - frame->copied;
+ if (cp_len > flen - count)
+ cp_len = flen - count;
+
+ memcpy_topcbit(dev, frame->skb->data + frame->copied,
+ cp_len);
+ frame->copied += cp_len;
+ }
+ /* bookkeeping */
+ dev->free -= flen;
+ pcbit_tx_update(dev, flen);
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ if (frame->skb == NULL || frame->copied == frame->skb->len) {
+
+ dev->write_queue = frame->next;
+
+ if (frame->skb != NULL) {
+ /* free frame */
+ dev_kfree_skb(frame->skb);
+ }
+ kfree(frame);
+ }
+ dev->w_busy = 0;
+ spin_unlock_irqrestore(&dev->lock, flags);
+ } else {
+ spin_unlock_irqrestore(&dev->lock, flags);
+#ifdef DEBUG
+ printk(KERN_DEBUG "unacked %d free %d write_queue %s\n",
+ unacked, dev->free, dev->write_queue ? "not empty" :
+ "empty");
+#endif
+ }
+}
+
+
+/*
+ * deliver a queued frame to the upper layer
+ */
+
+void
+pcbit_deliver(void *data)
+{
+ struct frame_buf *frame;
+ unsigned long flags, msg;
+ struct pcbit_dev *dev = (struct pcbit_dev *) data;
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ while ((frame = dev->read_queue)) {
+ dev->read_queue = frame->next;
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ SET_MSG_CPU(msg, 0);
+ SET_MSG_PROC(msg, 0);
+ SET_MSG_CMD(msg, frame->skb->data[2]);
+ SET_MSG_SCMD(msg, frame->skb->data[3]);
+
+ frame->refnum = *((ushort *) frame->skb->data + 4);
+ frame->msg = *((ulong *) & msg);
+
+ skb_pull(frame->skb, 6);
+
+ pcbit_l3_receive(dev, frame->msg, frame->skb, frame->hdr_len,
+ frame->refnum);
+
+ kfree(frame);
+
+ spin_lock_irqsave(&dev->lock, flags);
+ }
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+}
+
+/*
+ * Reads BANK 2 & Reassembles
+ */
+
+static void
+pcbit_receive(struct pcbit_dev *dev)
+{
+ unsigned short tt;
+ u_char cpu,
+ proc;
+ struct frame_buf *frame = NULL;
+ unsigned long flags;
+ u_char type1;
+
+ if (dev->l2_state != L2_RUNNING && dev->l2_state != L2_LOADING)
+ return;
+
+ tt = pcbit_readw(dev);
+
+ if ((tt & 0x7fffU) > 511) {
+ printk(KERN_INFO "pcbit: invalid frame length -> TT=%04x\n",
+ tt);
+ pcbit_l2_error(dev);
+ return;
+ }
+ if (!(tt & 0x8000U)) { /* Type 0 */
+ type1 = 0;
+
+ if (dev->read_frame) {
+ printk(KERN_DEBUG "pcbit_receive: Type 0 frame and read_frame != NULL\n");
+ /* discard previous queued frame */
+ if (dev->read_frame->skb)
+ kfree_skb(dev->read_frame->skb);
+ kfree(dev->read_frame);
+ dev->read_frame = NULL;
+ }
+ frame = kmalloc(sizeof(struct frame_buf), GFP_ATOMIC);
+
+ if (frame == NULL) {
+ printk(KERN_WARNING "kmalloc failed\n");
+ return;
+ }
+ memset(frame, 0, sizeof(struct frame_buf));
+
+ cpu = pcbit_readb(dev);
+ proc = pcbit_readb(dev);
+
+
+ if (cpu != 0x06 && cpu != 0x02) {
+ printk(KERN_DEBUG "pcbit: invalid cpu value\n");
+ kfree(frame);
+ pcbit_l2_error(dev);
+ return;
+ }
+ /*
+ * we discard cpu & proc on receiving
+ * but we read it to update the pointer
+ */
+
+ frame->hdr_len = pcbit_readw(dev);
+ frame->dt_len = pcbit_readw(dev);
+
+ /*
+ * 0 sized packet
+ * I don't know if they are an error or not...
+ * But they are very frequent
+ * Not documented
+ */
+
+ if (frame->hdr_len == 0) {
+ kfree(frame);
+#ifdef DEBUG
+ printk(KERN_DEBUG "0 sized frame\n");
+#endif
+ pcbit_firmware_bug(dev);
+ return;
+ }
+ /* sanity check the length values */
+ if (frame->hdr_len > 1024 || frame->dt_len > 2048) {
+#ifdef DEBUG
+ printk(KERN_DEBUG "length problem: ");
+ printk(KERN_DEBUG "TH=%04x TD=%04x\n",
+ frame->hdr_len,
+ frame->dt_len);
+#endif
+ pcbit_l2_error(dev);
+ kfree(frame);
+ return;
+ }
+ /* minimum frame read */
+
+ frame->skb = dev_alloc_skb(frame->hdr_len + frame->dt_len +
+ ((frame->hdr_len + 15) & ~15));
+
+ if (!frame->skb) {
+ printk(KERN_DEBUG "pcbit_receive: out of memory\n");
+ kfree(frame);
+ return;
+ }
+ /* 16 byte alignment for IP */
+ if (frame->dt_len)
+ skb_reserve(frame->skb, (frame->hdr_len + 15) & ~15);
+
+ } else {
+ /* Type 1 */
+ type1 = 1;
+ tt &= 0x7fffU;
+
+ if (!(frame = dev->read_frame)) {
+ printk("Type 1 frame and no frame queued\n");
+ /* usually after an error: toss frame */
+ dev->readptr += tt;
+ if (dev->readptr > dev->sh_mem + BANK2 + BANKLEN)
+ dev->readptr -= BANKLEN;
+ return;
+
+ }
+ }
+
+ memcpy_frompcbit(dev, skb_put(frame->skb, tt), tt);
+
+ frame->copied += tt;
+ spin_lock_irqsave(&dev->lock, flags);
+ if (frame->copied == frame->hdr_len + frame->dt_len) {
+
+ if (type1) {
+ dev->read_frame = NULL;
+ }
+ if (dev->read_queue) {
+ struct frame_buf *ptr;
+ for (ptr = dev->read_queue; ptr->next; ptr = ptr->next);
+ ptr->next = frame;
+ } else
+ dev->read_queue = frame;
+
+ } else {
+ dev->read_frame = frame;
+ }
+ spin_unlock_irqrestore(&dev->lock, flags);
+}
+
+/*
+ * The board sends 0 sized frames
+ * They are TDATA_CONFs that get messed up somehow
+ * gotta send a fake acknowledgment to the upper layer somehow
+ */
+
+static __inline__ void
+pcbit_fake_conf(struct pcbit_dev *dev, struct pcbit_chan *chan)
+{
+ isdn_ctrl ictl;
+
+ if (chan->queued) {
+ chan->queued--;
+
+ ictl.driver = dev->id;
+ ictl.command = ISDN_STAT_BSENT;
+ ictl.arg = chan->id;
+ dev->dev_if->statcallb(&ictl);
+ }
+}
+
+static void
+pcbit_firmware_bug(struct pcbit_dev *dev)
+{
+ struct pcbit_chan *chan;
+
+ chan = dev->b1;
+
+ if (chan->fsm_state == ST_ACTIVE) {
+ pcbit_fake_conf(dev, chan);
+ }
+ chan = dev->b2;
+
+ if (chan->fsm_state == ST_ACTIVE) {
+ pcbit_fake_conf(dev, chan);
+ }
+}
+
+irqreturn_t
+pcbit_irq_handler(int interrupt, void *devptr, struct pt_regs *regs)
+{
+ struct pcbit_dev *dev;
+ u_char info,
+ ack_seq,
+ read_seq;
+
+ dev = (struct pcbit_dev *) devptr;
+
+ if (!dev) {
+ printk(KERN_WARNING "pcbit_irq_handler: wrong device\n");
+ return IRQ_NONE;
+ }
+ if (dev->interrupt) {
+ printk(KERN_DEBUG "pcbit: reentering interrupt hander\n");
+ return IRQ_HANDLED;
+ }
+ dev->interrupt = 1;
+
+ info = readb(dev->sh_mem + BANK3);
+
+ if (dev->l2_state == L2_STARTING || dev->l2_state == L2_ERROR) {
+ pcbit_l2_active_conf(dev, info);
+ dev->interrupt = 0;
+ return IRQ_HANDLED;
+ }
+ if (info & 0x40U) { /* E bit set */
+#ifdef DEBUG
+ printk(KERN_DEBUG "pcbit_irq_handler: E bit on\n");
+#endif
+ pcbit_l2_error(dev);
+ dev->interrupt = 0;
+ return IRQ_HANDLED;
+ }
+ if (dev->l2_state != L2_RUNNING && dev->l2_state != L2_LOADING) {
+ dev->interrupt = 0;
+ return IRQ_HANDLED;
+ }
+ ack_seq = (info >> 3) & 0x07U;
+ read_seq = (info & 0x07U);
+
+ dev->interrupt = 0;
+
+ if (read_seq != dev->rcv_seq) {
+ while (read_seq != dev->rcv_seq) {
+ pcbit_receive(dev);
+ dev->rcv_seq = (dev->rcv_seq + 1) % 8;
+ }
+ pcbit_sched_delivery(dev);
+ }
+ if (ack_seq != dev->unack_seq) {
+ pcbit_recv_ack(dev, ack_seq);
+ }
+ info = dev->rcv_seq << 3;
+ info |= dev->send_seq;
+
+ writeb(info, dev->sh_mem + BANK4);
+ return IRQ_HANDLED;
+}
+
+
+static void
+pcbit_l2_active_conf(struct pcbit_dev *dev, u_char info)
+{
+ u_char state;
+
+ state = dev->l2_state;
+
+#ifdef DEBUG
+ printk(KERN_DEBUG "layer2_active_confirm\n");
+#endif
+
+
+ if (info & 0x80U) {
+ dev->rcv_seq = info & 0x07U;
+ dev->l2_state = L2_RUNNING;
+ } else
+ dev->l2_state = L2_DOWN;
+
+ if (state == L2_STARTING)
+ wake_up_interruptible(&dev->set_running_wq);
+
+ if (state == L2_ERROR && dev->l2_state == L2_RUNNING) {
+ pcbit_transmit(dev);
+ }
+}
+
+static void
+pcbit_l2_err_recover(unsigned long data)
+{
+
+ struct pcbit_dev *dev;
+ struct frame_buf *frame;
+
+ dev = (struct pcbit_dev *) data;
+
+ del_timer(&dev->error_recover_timer);
+ if (dev->w_busy || dev->r_busy) {
+ init_timer(&dev->error_recover_timer);
+ dev->error_recover_timer.expires = jiffies + ERRTIME;
+ add_timer(&dev->error_recover_timer);
+ return;
+ }
+ dev->w_busy = dev->r_busy = 1;
+
+ if (dev->read_frame) {
+ if (dev->read_frame->skb)
+ kfree_skb(dev->read_frame->skb);
+ kfree(dev->read_frame);
+ dev->read_frame = NULL;
+ }
+ if (dev->write_queue) {
+ frame = dev->write_queue;
+#ifdef FREE_ON_ERROR
+ dev->write_queue = dev->write_queue->next;
+
+ if (frame->skb) {
+ dev_kfree_skb(frame->skb);
+ }
+ kfree(frame);
+#else
+ frame->copied = 0;
+#endif
+ }
+ dev->rcv_seq = dev->send_seq = dev->unack_seq = 0;
+ dev->free = 511;
+ dev->l2_state = L2_ERROR;
+
+ /* this is an hack... */
+ pcbit_firmware_bug(dev);
+
+ dev->writeptr = dev->sh_mem;
+ dev->readptr = dev->sh_mem + BANK2;
+
+ writeb((0x80U | ((dev->rcv_seq & 0x07) << 3) | (dev->send_seq & 0x07)),
+ dev->sh_mem + BANK4);
+ dev->w_busy = dev->r_busy = 0;
+
+}
+
+static void
+pcbit_l2_error(struct pcbit_dev *dev)
+{
+ if (dev->l2_state == L2_RUNNING) {
+
+ printk(KERN_INFO "pcbit: layer 2 error\n");
+
+#ifdef DEBUG
+ log_state(dev);
+#endif
+
+ dev->l2_state = L2_DOWN;
+
+ init_timer(&dev->error_recover_timer);
+ dev->error_recover_timer.function = &pcbit_l2_err_recover;
+ dev->error_recover_timer.data = (ulong) dev;
+ dev->error_recover_timer.expires = jiffies + ERRTIME;
+ add_timer(&dev->error_recover_timer);
+ }
+}
+
+/*
+ * Description:
+ * if board acks frames
+ * update dev->free
+ * call pcbit_transmit to write possible queued frames
+ */
+
+static void
+pcbit_recv_ack(struct pcbit_dev *dev, unsigned char ack)
+{
+ int i,
+ count;
+ int unacked;
+
+ unacked = (dev->send_seq + (8 - dev->unack_seq)) & 0x07;
+
+ /* dev->unack_seq < ack <= dev->send_seq; */
+
+ if (unacked) {
+
+ if (dev->send_seq > dev->unack_seq) {
+ if (ack <= dev->unack_seq || ack > dev->send_seq) {
+ printk(KERN_DEBUG
+ "layer 2 ack unacceptable - dev %d",
+ dev->id);
+
+ pcbit_l2_error(dev);
+ } else if (ack > dev->send_seq && ack <= dev->unack_seq) {
+ printk(KERN_DEBUG
+ "layer 2 ack unacceptable - dev %d",
+ dev->id);
+ pcbit_l2_error(dev);
+ }
+ }
+ /* ack is acceptable */
+
+
+ i = dev->unack_seq;
+
+ do {
+ dev->unack_seq = i = (i + 1) % 8;
+ dev->free += dev->fsize[i];
+ } while (i != ack);
+
+ count = 0;
+ while (count < 7 && dev->write_queue) {
+ u8 lsend_seq = dev->send_seq;
+
+ pcbit_transmit(dev);
+
+ if (dev->send_seq == lsend_seq)
+ break;
+ count++;
+ }
+ } else
+ printk(KERN_DEBUG "recv_ack: unacked = 0\n");
+}
diff --git a/drivers/isdn/pcbit/layer2.h b/drivers/isdn/pcbit/layer2.h
new file mode 100644
index 000000000000..0d99da3a3e2b
--- /dev/null
+++ b/drivers/isdn/pcbit/layer2.h
@@ -0,0 +1,288 @@
+/*
+ * PCBIT-D low-layer interface definitions
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+/*
+ * 19991203 - Fernando Carvalho - takion@superbofh.org
+ * Hacked to compile with egcs and run with current version of isdn modules
+*/
+
+#ifndef LAYER2_H
+#define LAYER2_H
+
+#include <linux/interrupt.h>
+
+#include <asm/byteorder.h>
+
+#define BANK1 0x0000U /* PC -> Board */
+#define BANK2 0x01ffU /* Board -> PC */
+#define BANK3 0x03feU /* Att Board */
+#define BANK4 0x03ffU /* Att PC */
+
+#define BANKLEN 0x01FFU
+
+#define LOAD_ZONE_START 0x03f8U
+#define LOAD_ZONE_END 0x03fdU
+
+#define LOAD_RETRY 18000000
+
+
+
+/* TAM - XX - C - S - NUM */
+#define PREHDR_LEN 8
+/* TT - M - I - TH - TD */
+#define FRAME_HDR_LEN 8
+
+#define MSG_CONN_REQ 0x08000100
+#define MSG_CONN_CONF 0x00000101
+#define MSG_CONN_IND 0x00000102
+#define MSG_CONN_RESP 0x08000103
+
+#define MSG_CONN_ACTV_REQ 0x08000300
+#define MSG_CONN_ACTV_CONF 0x00000301
+#define MSG_CONN_ACTV_IND 0x00000302
+#define MSG_CONN_ACTV_RESP 0x08000303
+
+#define MSG_DISC_REQ 0x08000400
+#define MSG_DISC_CONF 0x00000401
+#define MSG_DISC_IND 0x00000402
+#define MSG_DISC_RESP 0x08000403
+
+#define MSG_TDATA_REQ 0x0908E200
+#define MSG_TDATA_CONF 0x0000E201
+#define MSG_TDATA_IND 0x0000E202
+#define MSG_TDATA_RESP 0x0908E203
+
+#define MSG_SELP_REQ 0x09004000
+#define MSG_SELP_CONF 0x00004001
+
+#define MSG_ACT_TRANSP_REQ 0x0908E000
+#define MSG_ACT_TRANSP_CONF 0x0000E001
+
+#define MSG_STPROT_REQ 0x09004100
+#define MSG_STPROT_CONF 0x00004101
+
+#define MSG_PING188_REQ 0x09030500
+#define MSG_PING188_CONF 0x000005bc
+
+#define MSG_WATCH188 0x09030400
+
+#define MSG_API_ON 0x08020102
+#define MSG_POOL_PCBIT 0x08020400
+#define MSG_POOL_PCBIT_CONF 0x00000401
+
+#define MSG_INFO_IND 0x00002602
+#define MSG_INFO_RESP 0x08002603
+
+#define MSG_DEBUG_188 0x0000ff00
+
+/*
+
+ long 4 3 2 1
+ Intel 1 2 3 4
+*/
+
+#ifdef __LITTLE_ENDIAN
+#define SET_MSG_SCMD(msg, ch) (msg = (msg & 0xffffff00) | (((ch) & 0xff)))
+#define SET_MSG_CMD(msg, ch) (msg = (msg & 0xffff00ff) | (((ch) & 0xff) << 8))
+#define SET_MSG_PROC(msg, ch) (msg = (msg & 0xff00ffff) | (((ch) & 0xff) << 16))
+#define SET_MSG_CPU(msg, ch) (msg = (msg & 0x00ffffff) | (((ch) & 0xff) << 24))
+
+#define GET_MSG_SCMD(msg) ((msg) & 0xFF)
+#define GET_MSG_CMD(msg) ((msg) >> 8 & 0xFF)
+#define GET_MSG_PROC(msg) ((msg) >> 16 & 0xFF)
+#define GET_MSG_CPU(msg) ((msg) >> 24)
+
+#else
+#error "Non-Intel CPU"
+#endif
+
+#define MAX_QUEUED 7
+
+#define SCHED_READ 0x01
+#define SCHED_WRITE 0x02
+
+#define SET_RUN_TIMEOUT 2*HZ /* 2 seconds */
+
+struct frame_buf {
+ ulong msg;
+ unsigned int refnum;
+ unsigned int dt_len;
+ unsigned int hdr_len;
+ struct sk_buff *skb;
+ unsigned int copied;
+ struct frame_buf * next;
+};
+
+extern int pcbit_l2_write(struct pcbit_dev * dev, ulong msg, ushort refnum,
+ struct sk_buff *skb, unsigned short hdr_len);
+
+extern irqreturn_t pcbit_irq_handler(int interrupt, void *, struct pt_regs *regs);
+
+extern struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];
+
+#ifdef DEBUG
+static __inline__ void log_state(struct pcbit_dev *dev) {
+ printk(KERN_DEBUG "writeptr = %ld\n",
+ (ulong) (dev->writeptr - dev->sh_mem));
+ printk(KERN_DEBUG "readptr = %ld\n",
+ (ulong) (dev->readptr - (dev->sh_mem + BANK2)));
+ printk(KERN_DEBUG "{rcv_seq=%01x, send_seq=%01x, unack_seq=%01x}\n",
+ dev->rcv_seq, dev->send_seq, dev->unack_seq);
+}
+#endif
+
+static __inline__ struct pcbit_dev * chan2dev(struct pcbit_chan * chan)
+{
+ struct pcbit_dev * dev;
+ int i;
+
+
+ for (i=0; i<MAX_PCBIT_CARDS; i++)
+ if ((dev=dev_pcbit[i]))
+ if (dev->b1 == chan || dev->b2 == chan)
+ return dev;
+ return NULL;
+
+}
+
+static __inline__ struct pcbit_dev * finddev(int id)
+{
+ struct pcbit_dev * dev;
+ int i;
+
+ for (i=0; i<MAX_PCBIT_CARDS; i++)
+ if ((dev=dev_pcbit[i]))
+ if (dev->id == id)
+ return dev;
+ return NULL;
+}
+
+
+/*
+ * Support routines for reading and writing in the board
+ */
+
+static __inline__ void pcbit_writeb(struct pcbit_dev *dev, unsigned char dt)
+{
+ writeb(dt, dev->writeptr++);
+ if (dev->writeptr == dev->sh_mem + BANKLEN)
+ dev->writeptr = dev->sh_mem;
+}
+
+static __inline__ void pcbit_writew(struct pcbit_dev *dev, unsigned short dt)
+{
+ int dist;
+
+ dist = BANKLEN - (dev->writeptr - dev->sh_mem);
+ switch (dist) {
+ case 2:
+ writew(dt, dev->writeptr);
+ dev->writeptr = dev->sh_mem;
+ break;
+ case 1:
+ writeb((u_char) (dt & 0x00ffU), dev->writeptr);
+ dev->writeptr = dev->sh_mem;
+ writeb((u_char) (dt >> 8), dev->writeptr++);
+ break;
+ default:
+ writew(dt, dev->writeptr);
+ dev->writeptr += 2;
+ break;
+ };
+}
+
+static __inline__ void memcpy_topcbit(struct pcbit_dev * dev, u_char * data,
+ int len)
+{
+ int diff;
+
+ diff = len - (BANKLEN - (dev->writeptr - dev->sh_mem) );
+
+ if (diff > 0)
+ {
+ memcpy_toio(dev->writeptr, data, len - diff);
+ memcpy_toio(dev->sh_mem, data + (len - diff), diff);
+ dev->writeptr = dev->sh_mem + diff;
+ }
+ else
+ {
+ memcpy_toio(dev->writeptr, data, len);
+
+ dev->writeptr += len;
+ if (diff == 0)
+ dev->writeptr = dev->sh_mem;
+ }
+}
+
+static __inline__ unsigned char pcbit_readb(struct pcbit_dev *dev)
+{
+ unsigned char val;
+
+ val = readb(dev->readptr++);
+ if (dev->readptr == dev->sh_mem + BANK2 + BANKLEN)
+ dev->readptr = dev->sh_mem + BANK2;
+
+ return val;
+}
+
+static __inline__ unsigned short pcbit_readw(struct pcbit_dev *dev)
+{
+ int dist;
+ unsigned short val;
+
+ dist = BANKLEN - ( dev->readptr - (dev->sh_mem + BANK2 ) );
+ switch (dist) {
+ case 2:
+ val = readw(dev->readptr);
+ dev->readptr = dev->sh_mem + BANK2;
+ break;
+ case 1:
+ val = readb(dev->readptr);
+ dev->readptr = dev->sh_mem + BANK2;
+ val = (readb(dev->readptr++) << 8) | val;
+ break;
+ default:
+ val = readw(dev->readptr);
+ dev->readptr += 2;
+ break;
+ };
+ return val;
+}
+
+static __inline__ void memcpy_frompcbit(struct pcbit_dev * dev, u_char * data, int len)
+{
+ int diff;
+
+ diff = len - (BANKLEN - (dev->readptr - (dev->sh_mem + BANK2) ) );
+ if (diff > 0)
+ {
+ memcpy_fromio(data, dev->readptr, len - diff);
+ memcpy_fromio(data + (len - diff), dev->sh_mem + BANK2 , diff);
+ dev->readptr = dev->sh_mem + BANK2 + diff;
+ }
+ else
+ {
+ memcpy_fromio(data, dev->readptr, len);
+ dev->readptr += len;
+ if (diff == 0)
+ dev->readptr = dev->sh_mem + BANK2;
+ }
+}
+
+
+#endif
+
+
+
+
+
+
+
diff --git a/drivers/isdn/pcbit/module.c b/drivers/isdn/pcbit/module.c
new file mode 100644
index 000000000000..282073a35d6a
--- /dev/null
+++ b/drivers/isdn/pcbit/module.c
@@ -0,0 +1,130 @@
+/*
+ * PCBIT-D module support
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+
+#include <linux/isdnif.h>
+#include "pcbit.h"
+
+MODULE_DESCRIPTION("ISDN4Linux: Driver for PCBIT-T card");
+MODULE_AUTHOR("Pedro Roque Marques");
+MODULE_LICENSE("GPL");
+
+static int mem[MAX_PCBIT_CARDS];
+static int irq[MAX_PCBIT_CARDS];
+
+module_param_array(mem, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+
+static int num_boards;
+struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];
+
+extern void pcbit_terminate(int board);
+extern int pcbit_init_dev(int board, int mem_base, int irq);
+
+static int __init pcbit_init(void)
+{
+ int board;
+
+ num_boards = 0;
+
+ printk(KERN_NOTICE
+ "PCBIT-D device driver v 0.5-fjpc0 19991204 - "
+ "Copyright (C) 1996 Universidade de Lisboa\n");
+
+ if (mem[0] || irq[0])
+ {
+ for (board=0; board < MAX_PCBIT_CARDS && mem[board] && irq[board]; board++)
+ {
+ if (!mem[board])
+ mem[board] = 0xD0000;
+ if (!irq[board])
+ irq[board] = 5;
+
+ if (pcbit_init_dev(board, mem[board], irq[board]) == 0)
+ num_boards++;
+
+ else
+ {
+ printk(KERN_WARNING
+ "pcbit_init failed for dev %d",
+ board + 1);
+ return -EIO;
+ }
+ }
+ }
+
+ /* Hardcoded default settings detection */
+
+ if (!num_boards)
+ {
+ printk(KERN_INFO
+ "Trying to detect board using default settings\n");
+ if (pcbit_init_dev(0, 0xD0000, 5) == 0)
+ num_boards++;
+ else
+ return -EIO;
+ }
+ return 0;
+}
+
+static void __exit pcbit_exit(void)
+{
+#ifdef MODULE
+ int board;
+
+ for (board = 0; board < num_boards; board++)
+ pcbit_terminate(board);
+ printk(KERN_NOTICE
+ "PCBIT-D module unloaded\n");
+#endif
+}
+
+#ifndef MODULE
+#define MAX_PARA (MAX_PCBIT_CARDS * 2)
+static int __init pcbit_setup(char *line)
+{
+ int i, j, argc;
+ char *str;
+ int ints[MAX_PARA+1];
+
+ str = get_options(line, MAX_PARA, ints);
+ argc = ints[0];
+ i = 0;
+ j = 1;
+
+ while (argc && (i<MAX_PCBIT_CARDS)) {
+
+ if (argc) {
+ mem[i] = ints[j];
+ j++; argc--;
+ }
+
+ if (argc) {
+ irq[i] = ints[j];
+ j++; argc--;
+ }
+
+ i++;
+ }
+ return(1);
+}
+__setup("pcbit=", pcbit_setup);
+#endif
+
+module_init(pcbit_init);
+module_exit(pcbit_exit);
+
diff --git a/drivers/isdn/pcbit/pcbit.h b/drivers/isdn/pcbit/pcbit.h
new file mode 100644
index 000000000000..388bacefd23a
--- /dev/null
+++ b/drivers/isdn/pcbit/pcbit.h
@@ -0,0 +1,169 @@
+/*
+ * PCBIT-D device driver definitions
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+#ifndef PCBIT_H
+#define PCBIT_H
+
+#include <linux/workqueue.h>
+
+#define MAX_PCBIT_CARDS 4
+
+
+#define BLOCK_TIMER
+
+#ifdef __KERNEL__
+
+struct pcbit_chan {
+ unsigned short id;
+ unsigned short callref; /* Call Reference */
+ unsigned char proto; /* layer2protocol */
+ unsigned char queued; /* unacked data messages */
+ unsigned char layer2link; /* used in TData */
+ unsigned char snum; /* used in TData */
+ unsigned short s_refnum;
+ unsigned short r_refnum;
+ unsigned short fsm_state;
+ struct timer_list fsm_timer;
+#ifdef BLOCK_TIMER
+ struct timer_list block_timer;
+#endif
+};
+
+struct msn_entry {
+ char *msn;
+ struct msn_entry * next;
+};
+
+struct pcbit_dev {
+ /* board */
+
+ volatile unsigned char __iomem *sh_mem; /* RDP address */
+ unsigned long ph_mem;
+ unsigned int irq;
+ unsigned int id;
+ unsigned int interrupt; /* set during interrupt
+ processing */
+ spinlock_t lock;
+ /* isdn4linux */
+
+ struct msn_entry * msn_list; /* ISDN address list */
+
+ isdn_if * dev_if;
+
+ ushort ll_hdrlen;
+ ushort hl_hdrlen;
+
+ /* link layer */
+ unsigned char l2_state;
+
+ struct frame_buf *read_queue;
+ struct frame_buf *read_frame;
+ struct frame_buf *write_queue;
+
+ /* Protocol start */
+ wait_queue_head_t set_running_wq;
+ struct timer_list set_running_timer;
+
+ struct timer_list error_recover_timer;
+
+ struct work_struct qdelivery;
+
+ u_char w_busy;
+ u_char r_busy;
+
+ volatile unsigned char __iomem *readptr;
+ volatile unsigned char __iomem *writeptr;
+
+ ushort loadptr;
+
+ unsigned short fsize[8]; /* sent layer2 frames size */
+
+ unsigned char send_seq;
+ unsigned char rcv_seq;
+ unsigned char unack_seq;
+
+ unsigned short free;
+
+ /* channels */
+
+ struct pcbit_chan *b1;
+ struct pcbit_chan *b2;
+};
+
+#define STATS_TIMER (10*HZ)
+#define ERRTIME (HZ/10)
+
+/* MRU */
+#define MAXBUFSIZE 1534
+#define MRU MAXBUFSIZE
+
+#define STATBUF_LEN 2048
+/*
+ *
+ */
+
+#endif /* __KERNEL__ */
+
+/* isdn_ctrl only allows a long sized argument */
+
+struct pcbit_ioctl {
+ union {
+ struct byte_op {
+ ushort addr;
+ ushort value;
+ } rdp_byte;
+ unsigned long l2_status;
+ } info;
+};
+
+
+
+#define PCBIT_IOCTL_GETSTAT 0x01 /* layer2 status */
+#define PCBIT_IOCTL_LWMODE 0x02 /* linear write mode */
+#define PCBIT_IOCTL_STRLOAD 0x03 /* start load mode */
+#define PCBIT_IOCTL_ENDLOAD 0x04 /* end load mode */
+#define PCBIT_IOCTL_SETBYTE 0x05 /* set byte */
+#define PCBIT_IOCTL_GETBYTE 0x06 /* get byte */
+#define PCBIT_IOCTL_RUNNING 0x07 /* set protocol running */
+#define PCBIT_IOCTL_WATCH188 0x08 /* set watch 188 */
+#define PCBIT_IOCTL_PING188 0x09 /* ping 188 */
+#define PCBIT_IOCTL_FWMODE 0x0A /* firmware write mode */
+#define PCBIT_IOCTL_STOP 0x0B /* stop protocol */
+#define PCBIT_IOCTL_APION 0x0C /* issue API_ON */
+
+#ifndef __KERNEL__
+
+#define PCBIT_GETSTAT (PCBIT_IOCTL_GETSTAT + IIOCDRVCTL)
+#define PCBIT_LWMODE (PCBIT_IOCTL_LWMODE + IIOCDRVCTL)
+#define PCBIT_STRLOAD (PCBIT_IOCTL_STRLOAD + IIOCDRVCTL)
+#define PCBIT_ENDLOAD (PCBIT_IOCTL_ENDLOAD + IIOCDRVCTL)
+#define PCBIT_SETBYTE (PCBIT_IOCTL_SETBYTE + IIOCDRVCTL)
+#define PCBIT_GETBYTE (PCBIT_IOCTL_GETBYTE + IIOCDRVCTL)
+#define PCBIT_RUNNING (PCBIT_IOCTL_RUNNING + IIOCDRVCTL)
+#define PCBIT_WATCH188 (PCBIT_IOCTL_WATCH188 + IIOCDRVCTL)
+#define PCBIT_PING188 (PCBIT_IOCTL_PING188 + IIOCDRVCTL)
+#define PCBIT_FWMODE (PCBIT_IOCTL_FWMODE + IIOCDRVCTL)
+#define PCBIT_STOP (PCBIT_IOCTL_STOP + IIOCDRVCTL)
+#define PCBIT_APION (PCBIT_IOCTL_APION + IIOCDRVCTL)
+
+#define MAXSUPERLINE 3000
+
+#endif
+
+#define L2_DOWN 0
+#define L2_LOADING 1
+#define L2_LWMODE 2
+#define L2_FWMODE 3
+#define L2_STARTING 4
+#define L2_RUNNING 5
+#define L2_ERROR 6
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 14:33:13 +0000