Merge branch 'master' into for-linus

1 files changed, 1156 insertions, 0 deletions

diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c
new file mode 100644
index 000000000000..6c1b164937a9
--- /dev/null
+++ b/drivers/isdn/hardware/mISDN/netjet.c
@@ -0,0 +1,1156 @@
+/*
+ * NETJet mISDN driver
+ *
+ * Author       Karsten Keil <keil@isdn4linux.de>
+ *
+ * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mISDNhw.h>
+#include "ipac.h"
+#include "iohelper.h"
+#include "netjet.h"
+#include <linux/isdn/hdlc.h>
+
+#define NETJET_REV	"2.0"
+
+enum nj_types {
+	NETJET_S_TJ300,
+	NETJET_S_TJ320,
+	ENTERNOW__TJ320,
+};
+
+struct tiger_dma {
+	size_t		size;
+	u32		*start;
+	int		idx;
+	u32		dmastart;
+	u32		dmairq;
+	u32		dmaend;
+	u32		dmacur;
+};
+
+struct tiger_hw;
+
+struct tiger_ch {
+	struct bchannel		bch;
+	struct tiger_hw		*nj;
+	int			idx;
+	int			free;
+	int			lastrx;
+	u16			rxstate;
+	u16			txstate;
+	struct isdnhdlc_vars	hsend;
+	struct isdnhdlc_vars	hrecv;
+	u8			*hsbuf;
+	u8			*hrbuf;
+};
+
+#define TX_INIT		0x0001
+#define TX_IDLE		0x0002
+#define TX_RUN		0x0004
+#define TX_UNDERRUN	0x0100
+#define RX_OVERRUN	0x0100
+
+#define LOG_SIZE	64
+
+struct tiger_hw {
+	struct list_head	list;
+	struct pci_dev		*pdev;
+	char			name[MISDN_MAX_IDLEN];
+	enum nj_types		typ;
+	int			irq;
+	u32			irqcnt;
+	u32			base;
+	size_t			base_s;
+	dma_addr_t		dma;
+	void			*dma_p;
+	spinlock_t		lock;	/* lock HW */
+	struct isac_hw		isac;
+	struct tiger_dma	send;
+	struct tiger_dma	recv;
+	struct tiger_ch		bc[2];
+	u8			ctrlreg;
+	u8			dmactrl;
+	u8			auxd;
+	u8			last_is0;
+	u8			irqmask0;
+	char			log[LOG_SIZE];
+};
+
+static LIST_HEAD(Cards);
+static DEFINE_RWLOCK(card_lock); /* protect Cards */
+static u32 debug;
+static int nj_cnt;
+
+static void
+_set_debug(struct tiger_hw *card)
+{
+	card->isac.dch.debug = debug;
+	card->bc[0].bch.debug = debug;
+	card->bc[1].bch.debug = debug;
+}
+
+static int
+set_debug(const char *val, struct kernel_param *kp)
+{
+	int ret;
+	struct tiger_hw *card;
+
+	ret = param_set_uint(val, kp);
+	if (!ret) {
+		read_lock(&card_lock);
+		list_for_each_entry(card, &Cards, list)
+			_set_debug(card);
+		read_unlock(&card_lock);
+	}
+	return ret;
+}
+
+MODULE_AUTHOR("Karsten Keil");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(NETJET_REV);
+module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Netjet debug mask");
+
+static void
+nj_disable_hwirq(struct tiger_hw *card)
+{
+	outb(0, card->base + NJ_IRQMASK0);
+	outb(0, card->base + NJ_IRQMASK1);
+}
+
+
+static u8
+ReadISAC_nj(void *p, u8 offset)
+{
+	struct tiger_hw *card = p;
+	u8 ret;
+
+	card->auxd &= 0xfc;
+	card->auxd |= (offset >> 4) & 3;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	ret = inb(card->base + NJ_ISAC_OFF + ((offset & 0x0f) << 2));
+	return ret;
+}
+
+static void
+WriteISAC_nj(void *p, u8 offset, u8 value)
+{
+	struct tiger_hw *card = p;
+
+	card->auxd &= 0xfc;
+	card->auxd |= (offset >> 4) & 3;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	outb(value, card->base + NJ_ISAC_OFF + ((offset & 0x0f) << 2));
+}
+
+static void
+ReadFiFoISAC_nj(void *p, u8 offset, u8 *data, int size)
+{
+	struct tiger_hw *card = p;
+
+	card->auxd &= 0xfc;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	insb(card->base + NJ_ISAC_OFF, data, size);
+}
+
+static void
+WriteFiFoISAC_nj(void *p, u8 offset, u8 *data, int size)
+{
+	struct tiger_hw *card = p;
+
+	card->auxd &= 0xfc;
+	outb(card->auxd, card->base + NJ_AUXDATA);
+	outsb(card->base + NJ_ISAC_OFF, data, size);
+}
+
+static void
+fill_mem(struct tiger_ch *bc, u32 idx, u32 cnt, u32 fill)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	u32 mask = 0xff, val;
+
+	pr_debug("%s: B%1d fill %02x len %d idx %d/%d\n", card->name,
+		bc->bch.nr, fill, cnt, idx, card->send.idx);
+	if (bc->bch.nr & 2) {
+		fill  <<= 8;
+		mask <<= 8;
+	}
+	mask ^= 0xffffffff;
+	while (cnt--) {
+		val = card->send.start[idx];
+		val &= mask;
+		val |= fill;
+		card->send.start[idx++] = val;
+		if (idx >= card->send.size)
+			idx = 0;
+	}
+}
+
+static int
+mode_tiger(struct tiger_ch *bc, u32 protocol)
+{
+	struct tiger_hw *card = bc->bch.hw;
+
+	pr_debug("%s: B%1d protocol %x-->%x\n", card->name,
+		bc->bch.nr, bc->bch.state, protocol);
+	switch (protocol) {
+	case ISDN_P_NONE:
+		if (bc->bch.state == ISDN_P_NONE)
+			break;
+		fill_mem(bc, 0, card->send.size, 0xff);
+		bc->bch.state = protocol;
+		/* only stop dma and interrupts if both channels NULL */
+		if ((card->bc[0].bch.state == ISDN_P_NONE) &&
+		    (card->bc[1].bch.state == ISDN_P_NONE)) {
+			card->dmactrl = 0;
+			outb(card->dmactrl, card->base + NJ_DMACTRL);
+			outb(0, card->base + NJ_IRQMASK0);
+		}
+		test_and_clear_bit(FLG_HDLC, &bc->bch.Flags);
+		test_and_clear_bit(FLG_TRANSPARENT, &bc->bch.Flags);
+		bc->txstate = 0;
+		bc->rxstate = 0;
+		bc->lastrx = -1;
+		break;
+	case ISDN_P_B_RAW:
+		test_and_set_bit(FLG_TRANSPARENT, &bc->bch.Flags);
+		bc->bch.state = protocol;
+		bc->idx = 0;
+		bc->free = card->send.size/2;
+		bc->rxstate = 0;
+		bc->txstate = TX_INIT | TX_IDLE;
+		bc->lastrx = -1;
+		if (!card->dmactrl) {
+			card->dmactrl = 1;
+			outb(card->dmactrl, card->base + NJ_DMACTRL);
+			outb(0x0f, card->base + NJ_IRQMASK0);
+		}
+		break;
+	case ISDN_P_B_HDLC:
+		test_and_set_bit(FLG_HDLC, &bc->bch.Flags);
+		bc->bch.state = protocol;
+		bc->idx = 0;
+		bc->free = card->send.size/2;
+		bc->rxstate = 0;
+		bc->txstate = TX_INIT | TX_IDLE;
+		isdnhdlc_rcv_init(&bc->hrecv, 0);
+		isdnhdlc_out_init(&bc->hsend, 0);
+		bc->lastrx = -1;
+		if (!card->dmactrl) {
+			card->dmactrl = 1;
+			outb(card->dmactrl, card->base + NJ_DMACTRL);
+			outb(0x0f, card->base + NJ_IRQMASK0);
+		}
+		break;
+	default:
+		pr_info("%s: %s protocol %x not handled\n", card->name,
+			__func__, protocol);
+		return -ENOPROTOOPT;
+	}
+	card->send.dmacur = inl(card->base + NJ_DMA_READ_ADR);
+	card->recv.dmacur = inl(card->base + NJ_DMA_WRITE_ADR);
+	card->send.idx = (card->send.dmacur - card->send.dmastart) >> 2;
+	card->recv.idx = (card->recv.dmacur - card->recv.dmastart) >> 2;
+	pr_debug("%s: %s ctrl %x irq  %02x/%02x idx %d/%d\n",
+		card->name, __func__,
+		inb(card->base + NJ_DMACTRL),
+		inb(card->base + NJ_IRQMASK0),
+		inb(card->base + NJ_IRQSTAT0),
+		card->send.idx,
+		card->recv.idx);
+	return 0;
+}
+
+static void
+nj_reset(struct tiger_hw *card)
+{
+	outb(0xff, card->base + NJ_CTRL); /* Reset On */
+	mdelay(1);
+
+	/* now edge triggered for TJ320 GE 13/07/00 */
+	/* see comment in IRQ function */
+	if (card->typ == NETJET_S_TJ320) /* TJ320 */
+		card->ctrlreg = 0x40;  /* Reset Off and status read clear */
+	else
+		card->ctrlreg = 0x00;  /* Reset Off and status read clear */
+	outb(card->ctrlreg, card->base + NJ_CTRL);
+	mdelay(10);
+
+	/* configure AUX pins (all output except ISAC IRQ pin) */
+	card->auxd = 0;
+	card->dmactrl = 0;
+	outb(~NJ_ISACIRQ, card->base + NJ_AUXCTRL);
+	outb(NJ_ISACIRQ,  card->base + NJ_IRQMASK1);
+	outb(card->auxd, card->base + NJ_AUXDATA);
+}
+
+static int
+inittiger(struct tiger_hw *card)
+{
+	int i;
+
+	card->dma_p = pci_alloc_consistent(card->pdev, NJ_DMA_SIZE,
+			&card->dma);
+	if (!card->dma_p) {
+		pr_info("%s: No DMA memory\n", card->name);
+		return -ENOMEM;
+	}
+	if ((u64)card->dma > 0xffffffff) {
+		pr_info("%s: DMA outside 32 bit\n", card->name);
+		return -ENOMEM;
+	}
+	for (i = 0; i < 2; i++) {
+		card->bc[i].hsbuf = kmalloc(NJ_DMA_TXSIZE, GFP_KERNEL);
+		if (!card->bc[i].hsbuf) {
+			pr_info("%s: no B%d send buffer\n", card->name, i + 1);
+			return -ENOMEM;
+		}
+		card->bc[i].hrbuf = kmalloc(NJ_DMA_RXSIZE, GFP_KERNEL);
+		if (!card->bc[i].hrbuf) {
+			pr_info("%s: no B%d recv buffer\n", card->name, i + 1);
+			return -ENOMEM;
+		}
+	}
+	memset(card->dma_p, 0xff, NJ_DMA_SIZE);
+
+	card->send.start = card->dma_p;
+	card->send.dmastart = (u32)card->dma;
+	card->send.dmaend = card->send.dmastart +
+		(4 * (NJ_DMA_TXSIZE - 1));
+	card->send.dmairq = card->send.dmastart +
+		(4 * ((NJ_DMA_TXSIZE / 2) - 1));
+	card->send.size = NJ_DMA_TXSIZE;
+
+	if (debug & DEBUG_HW)
+		pr_notice("%s: send buffer phy %#x - %#x - %#x  virt %p"
+			" size %zu u32\n", card->name,
+			card->send.dmastart, card->send.dmairq,
+			card->send.dmaend, card->send.start, card->send.size);
+
+	outl(card->send.dmastart, card->base + NJ_DMA_READ_START);
+	outl(card->send.dmairq, card->base + NJ_DMA_READ_IRQ);
+	outl(card->send.dmaend, card->base + NJ_DMA_READ_END);
+
+	card->recv.start = card->dma_p + (NJ_DMA_SIZE / 2);
+	card->recv.dmastart = (u32)card->dma  + (NJ_DMA_SIZE / 2);
+	card->recv.dmaend = card->recv.dmastart +
+		(4 * (NJ_DMA_RXSIZE - 1));
+	card->recv.dmairq = card->recv.dmastart +
+		(4 * ((NJ_DMA_RXSIZE / 2) - 1));
+	card->recv.size = NJ_DMA_RXSIZE;
+
+	if (debug & DEBUG_HW)
+		pr_notice("%s: recv buffer phy %#x - %#x - %#x  virt %p"
+			" size %zu u32\n", card->name,
+			card->recv.dmastart, card->recv.dmairq,
+			card->recv.dmaend, card->recv.start, card->recv.size);
+
+	outl(card->recv.dmastart, card->base + NJ_DMA_WRITE_START);
+	outl(card->recv.dmairq, card->base + NJ_DMA_WRITE_IRQ);
+	outl(card->recv.dmaend, card->base + NJ_DMA_WRITE_END);
+	return 0;
+}
+
+static void
+read_dma(struct tiger_ch *bc, u32 idx, int cnt)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	int i, stat;
+	u32 val;
+	u8 *p, *pn;
+
+	if (bc->lastrx == idx) {
+		bc->rxstate |= RX_OVERRUN;
+		pr_info("%s: B%1d overrun at idx %d\n", card->name,
+			bc->bch.nr, idx);
+	}
+	bc->lastrx = idx;
+	if (!bc->bch.rx_skb) {
+		bc->bch.rx_skb = mI_alloc_skb(bc->bch.maxlen, GFP_ATOMIC);
+		if (!bc->bch.rx_skb) {
+			pr_info("%s: B%1d receive out of memory\n",
+				card->name, bc->bch.nr);
+			return;
+		}
+	}
+
+	if (test_bit(FLG_TRANSPARENT, &bc->bch.Flags)) {
+		if ((bc->bch.rx_skb->len + cnt) > bc->bch.maxlen) {
+			pr_debug("%s: B%1d overrun %d\n", card->name,
+				bc->bch.nr, bc->bch.rx_skb->len + cnt);
+			skb_trim(bc->bch.rx_skb, 0);
+			return;
+		}
+		p = skb_put(bc->bch.rx_skb, cnt);
+	} else
+		p = bc->hrbuf;
+
+	for (i = 0; i < cnt; i++) {
+		val = card->recv.start[idx++];
+		if (bc->bch.nr & 2)
+			val >>= 8;
+		if (idx >= card->recv.size)
+			idx = 0;
+		p[i] = val & 0xff;
+	}
+	pn = bc->hrbuf;
+next_frame:
+	if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+		stat = isdnhdlc_decode(&bc->hrecv, pn, cnt, &i,
+			bc->bch.rx_skb->data, bc->bch.maxlen);
+		if (stat > 0) /* valid frame received */ 
+			p = skb_put(bc->bch.rx_skb, stat);
+		else if (stat == -HDLC_CRC_ERROR)
+			pr_info("%s: B%1d receive frame CRC error\n",
+				card->name, bc->bch.nr);
+		else if (stat == -HDLC_FRAMING_ERROR)
+			pr_info("%s: B%1d receive framing error\n",
+				card->name, bc->bch.nr);
+		else if (stat == -HDLC_LENGTH_ERROR)
+			pr_info("%s: B%1d receive frame too long (> %d)\n",
+				card->name, bc->bch.nr, bc->bch.maxlen);
+	} else
+		stat = cnt;	
+
+	if (stat > 0) {
+		if (debug & DEBUG_HW_BFIFO) {
+			snprintf(card->log, LOG_SIZE, "B%1d-recv %s %d ",
+				bc->bch.nr, card->name, stat);
+			print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET,
+				p, stat);
+		}
+		recv_Bchannel(&bc->bch, 0);
+	}
+	if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+		pn += i;
+		cnt -= i;
+		if (!bc->bch.rx_skb) {
+			bc->bch.rx_skb = mI_alloc_skb(bc->bch.maxlen,
+				GFP_ATOMIC);
+			if (!bc->bch.rx_skb) {
+				pr_info("%s: B%1d receive out of memory\n",
+					card->name, bc->bch.nr);
+				return;
+			}
+		}
+		if (cnt > 0)
+			goto next_frame;
+	}
+}
+
+static void
+recv_tiger(struct tiger_hw *card, u8 irq_stat)
+{
+	u32 idx;
+	int cnt = card->recv.size / 2;
+
+	/* Note receive is via the WRITE DMA channel */
+	card->last_is0 &= ~NJ_IRQM0_WR_MASK;
+	card->last_is0 |= (irq_stat & NJ_IRQM0_WR_MASK);
+
+	if (irq_stat & NJ_IRQM0_WR_END)
+		idx = cnt - 1;
+	else
+		idx = card->recv.size - 1;
+
+	if (test_bit(FLG_ACTIVE, &card->bc[0].bch.Flags))
+		read_dma(&card->bc[0], idx, cnt);
+	if (test_bit(FLG_ACTIVE, &card->bc[1].bch.Flags))
+		read_dma(&card->bc[1], idx, cnt);
+}
+
+/* sync with current DMA address at start or after exception */
+static void
+resync(struct tiger_ch *bc, struct tiger_hw *card)
+{
+	card->send.dmacur = inl(card->base | NJ_DMA_READ_ADR);
+	card->send.idx = (card->send.dmacur - card->send.dmastart) >> 2;
+	if (bc->free > card->send.size / 2)
+		bc->free = card->send.size / 2;
+	/* currently we simple sync to the next complete free area
+	 * this hast the advantage that we have always maximum time to
+	 * handle TX irq
+	 */
+	if (card->send.idx < ((card->send.size / 2) - 1))
+		bc->idx = (card->recv.size / 2) - 1;
+	else
+		bc->idx = card->recv.size - 1;
+	bc->txstate = TX_RUN;
+	pr_debug("%s: %s B%1d free %d idx %d/%d\n", card->name,
+		__func__, bc->bch.nr, bc->free, bc->idx, card->send.idx);
+}
+
+static int bc_next_frame(struct tiger_ch *);
+
+static void
+fill_hdlc_flag(struct tiger_ch *bc)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	int count, i;
+	u32 m, v;
+	u8  *p;
+
+	if (bc->free == 0)
+		return;
+	pr_debug("%s: %s B%1d %d state %x idx %d/%d\n", card->name,
+		__func__, bc->bch.nr, bc->free, bc->txstate,
+		bc->idx, card->send.idx);
+	if (bc->txstate & (TX_IDLE | TX_INIT | TX_UNDERRUN))
+		resync(bc, card);
+	count = isdnhdlc_encode(&bc->hsend, NULL, 0, &i,
+			bc->hsbuf, bc->free);
+	pr_debug("%s: B%1d hdlc encoded %d flags\n", card->name,
+			bc->bch.nr, count);
+	bc->free -= count;
+	p = bc->hsbuf;
+	m = (bc->bch.nr & 1) ? 0xffffff00 : 0xffff00ff;
+	for (i = 0; i < count; i++) {
+		if (bc->idx >= card->send.size)
+			bc->idx = 0;
+		v = card->send.start[bc->idx];
+		v &= m;
+		v |= (bc->bch.nr & 1) ? (u32)(p[i]) : ((u32)(p[i])) << 8;
+		card->send.start[bc->idx++] = v;
+	}
+	if (debug & DEBUG_HW_BFIFO) {
+		snprintf(card->log, LOG_SIZE, "B%1d-send %s %d ",
+			bc->bch.nr, card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+}
+
+static void
+fill_dma(struct tiger_ch *bc)
+{
+	struct tiger_hw *card = bc->bch.hw;
+	int count, i;
+	u32 m, v;
+	u8  *p;
+
+	if (bc->free == 0)
+		return;
+	count = bc->bch.tx_skb->len - bc->bch.tx_idx;
+	if (count <= 0)
+		return;
+	pr_debug("%s: %s B%1d %d/%d/%d/%d state %x idx %d/%d\n", card->name,
+		__func__, bc->bch.nr, count, bc->free, bc->bch.tx_idx,
+		bc->bch.tx_skb->len, bc->txstate, bc->idx, card->send.idx);
+	if (bc->txstate & (TX_IDLE | TX_INIT | TX_UNDERRUN))
+		resync(bc, card);
+	p = bc->bch.tx_skb->data + bc->bch.tx_idx;
+	if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+		count = isdnhdlc_encode(&bc->hsend, p, count, &i,
+			bc->hsbuf, bc->free);
+		pr_debug("%s: B%1d hdlc encoded %d in %d\n", card->name,
+			bc->bch.nr, i, count);
+		bc->bch.tx_idx += i;
+		bc->free -= count;
+		p = bc->hsbuf;
+	} else {
+		if (count > bc->free)
+			count = bc->free;
+		bc->bch.tx_idx += count;
+		bc->free -= count;
+	}
+	m = (bc->bch.nr & 1) ? 0xffffff00 : 0xffff00ff;
+	for (i = 0; i < count; i++) {
+		if (bc->idx >= card->send.size)
+			bc->idx = 0;
+		v = card->send.start[bc->idx];
+		v &= m;
+		v |= (bc->bch.nr & 1) ? (u32)(p[i]) : ((u32)(p[i])) << 8;
+		card->send.start[bc->idx++] = v;
+	}
+	if (debug & DEBUG_HW_BFIFO) {
+		snprintf(card->log, LOG_SIZE, "B%1d-send %s %d ",
+			bc->bch.nr, card->name, count);
+		print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, p, count);
+	}
+	if (bc->free)
+		bc_next_frame(bc);
+}
+
+
+static int
+bc_next_frame(struct tiger_ch *bc)
+{
+	if (bc->bch.tx_skb && bc->bch.tx_idx < bc->bch.tx_skb->len)
+		fill_dma(bc);
+	else {
+		if (bc->bch.tx_skb) {
+			/* send confirm, on trans, free on hdlc. */
+			if (test_bit(FLG_TRANSPARENT, &bc->bch.Flags))
+				confirm_Bsend(&bc->bch);
+			dev_kfree_skb(bc->bch.tx_skb);
+		}
+		if (get_next_bframe(&bc->bch))
+			fill_dma(bc);
+		else
+			return 0;
+	}
+	return 1;
+}
+
+static void
+send_tiger_bc(struct tiger_hw *card, struct tiger_ch *bc)
+{
+	int ret;
+
+	bc->free += card->send.size / 2;
+	if (bc->free >= card->send.size) {
+		if (!(bc->txstate & (TX_UNDERRUN | TX_INIT))) {
+			pr_info("%s: B%1d TX underrun state %x\n", card->name,
+				bc->bch.nr, bc->txstate);
+			bc->txstate |= TX_UNDERRUN;
+		}
+		bc->free = card->send.size;
+	}
+	ret = bc_next_frame(bc);
+	if (!ret) {
+		if (test_bit(FLG_HDLC, &bc->bch.Flags)) {
+			fill_hdlc_flag(bc);
+			return;
+		}
+		pr_debug("%s: B%1d TX no data free %d idx %d/%d\n", card->name,
+			bc->bch.nr, bc->free, bc->idx, card->send.idx);
+		if (!(bc->txstate & (TX_IDLE | TX_INIT))) {
+			fill_mem(bc, bc->idx, bc->free, 0xff);
+			if (bc->free == card->send.size)
+				bc->txstate |= TX_IDLE;
+		}
+	}
+}
+
+static void
+send_tiger(struct tiger_hw *card, u8 irq_stat)
+{
+	int i;
+
+	/* Note send is via the READ DMA channel */
+	if ((irq_stat & card->last_is0) & NJ_IRQM0_RD_MASK) {
+		pr_info("%s: tiger warn write double dma %x/%x\n",
+			card->name, irq_stat, card->last_is0);
+		return;
+	} else {
+		card->last_is0 &= ~NJ_IRQM0_RD_MASK;
+		card->last_is0 |= (irq_stat & NJ_IRQM0_RD_MASK);
+	}
+	for (i = 0; i < 2; i++) {
+		if (test_bit(FLG_ACTIVE, &card->bc[i].bch.Flags))
+			send_tiger_bc(card, &card->bc[i]);
+	}
+}
+
+static irqreturn_t
+nj_irq(int intno, void *dev_id)
+{
+	struct tiger_hw *card = dev_id;
+	u8 val, s1val, s0val;
+
+	spin_lock(&card->lock);
+	s0val = inb(card->base | NJ_IRQSTAT0);
+	s1val = inb(card->base | NJ_IRQSTAT1);
+	if ((s1val & NJ_ISACIRQ) && (s0val == 0)) {
+		/* shared IRQ */
+		spin_unlock(&card->lock);
+		return IRQ_NONE;
+	}
+	pr_debug("%s: IRQSTAT0 %02x IRQSTAT1 %02x\n", card->name, s0val, s1val);
+	card->irqcnt++;
+	if (!(s1val & NJ_ISACIRQ)) {
+		val = ReadISAC_nj(card, ISAC_ISTA);
+		if (val)
+			mISDNisac_irq(&card->isac, val);
+	}
+
+	if (s0val)
+		/* write to clear */
+		outb(s0val, card->base | NJ_IRQSTAT0);
+	else
+		goto end;
+	s1val = s0val;
+	/* set bits in sval to indicate which page is free */
+	card->recv.dmacur = inl(card->base | NJ_DMA_WRITE_ADR);
+	card->recv.idx = (card->recv.dmacur - card->recv.dmastart) >> 2;
+	if (card->recv.dmacur < card->recv.dmairq)
+		s0val = 0x08;	/* the 2nd write area is free */
+	else
+		s0val = 0x04;	/* the 1st write area is free */
+
+	card->send.dmacur = inl(card->base | NJ_DMA_READ_ADR);
+	card->send.idx = (card->send.dmacur - card->send.dmastart) >> 2;
+	if (card->send.dmacur < card->send.dmairq)
+		s0val |= 0x02;	/* the 2nd read area is free */
+	else
+		s0val |= 0x01;	/* the 1st read area is free */
+
+	pr_debug("%s: DMA Status %02x/%02x/%02x %d/%d\n", card->name,
+		s1val, s0val, card->last_is0,
+		card->recv.idx, card->send.idx);
+	/* test if we have a DMA interrupt */
+	if (s0val != card->last_is0) {
+		if ((s0val & NJ_IRQM0_RD_MASK) !=
+		    (card->last_is0 & NJ_IRQM0_RD_MASK))
+			/* got a write dma int */
+			send_tiger(card, s0val);
+		if ((s0val & NJ_IRQM0_WR_MASK) !=
+		    (card->last_is0 & NJ_IRQM0_WR_MASK))
+			/* got a read dma int */
+			recv_tiger(card, s0val);
+	}
+end:
+	spin_unlock(&card->lock);
+	return IRQ_HANDLED;
+}
+
+static int
+nj_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+	int ret = -EINVAL;
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct tiger_ch *bc = container_of(bch, struct tiger_ch, bch);
+	struct tiger_hw *card = bch->hw;
+	struct mISDNhead *hh = mISDN_HEAD_P(skb);
+	u32 id;
+	u_long flags;
+
+	switch (hh->prim) {
+	case PH_DATA_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		ret = bchannel_senddata(bch, skb);
+		if (ret > 0) { /* direct TX */
+			id = hh->id; /* skb can be freed */
+			fill_dma(bc);
+			ret = 0;
+			spin_unlock_irqrestore(&card->lock, flags);
+			if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
+				queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
+		} else
+			spin_unlock_irqrestore(&card->lock, flags);
+		return ret;
+	case PH_ACTIVATE_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
+			ret = mode_tiger(bc, ch->protocol);
+		else
+			ret = 0;
+		spin_unlock_irqrestore(&card->lock, flags);
+		if (!ret)
+			_queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
+				NULL, GFP_KERNEL);
+		break;
+	case PH_DEACTIVATE_REQ:
+		spin_lock_irqsave(&card->lock, flags);
+		mISDN_clear_bchannel(bch);
+		mode_tiger(bc, ISDN_P_NONE);
+		spin_unlock_irqrestore(&card->lock, flags);
+		_queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
+			NULL, GFP_KERNEL);
+		ret = 0;
+		break;
+	}
+	if (!ret)
+		dev_kfree_skb(skb);
+	return ret;
+}
+
+static int
+channel_bctrl(struct tiger_ch *bc, struct mISDN_ctrl_req *cq)
+{
+	int ret = 0;
+	struct tiger_hw *card  = bc->bch.hw;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = 0;
+		break;
+	/* Nothing implemented yet */
+	case MISDN_CTRL_FILL_EMPTY:
+	default:
+		pr_info("%s: %s unknown Op %x\n", card->name, __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+nj_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct bchannel *bch = container_of(ch, struct bchannel, ch);
+	struct tiger_ch *bc = container_of(bch, struct tiger_ch, bch);
+	struct tiger_hw *card  = bch->hw;
+	int ret = -EINVAL;
+	u_long flags;
+
+	pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
+	switch (cmd) {
+	case CLOSE_CHANNEL:
+		test_and_clear_bit(FLG_OPEN, &bch->Flags);
+		if (test_bit(FLG_ACTIVE, &bch->Flags)) {
+			spin_lock_irqsave(&card->lock, flags);
+			mISDN_freebchannel(bch);
+			test_and_clear_bit(FLG_TX_BUSY, &bch->Flags);
+			test_and_clear_bit(FLG_ACTIVE, &bch->Flags);
+			mode_tiger(bc, ISDN_P_NONE);
+			spin_unlock_irqrestore(&card->lock, flags);
+		}
+		ch->protocol = ISDN_P_NONE;
+		ch->peer = NULL;
+		module_put(THIS_MODULE);
+		ret = 0;
+		break;
+	case CONTROL_CHANNEL:
+		ret = channel_bctrl(bc, arg);
+		break;
+	default:
+		pr_info("%s: %s unknown prim(%x)\n", card->name, __func__, cmd);
+	}
+	return ret;
+}
+
+static int
+channel_ctrl(struct tiger_hw *card, struct mISDN_ctrl_req *cq)
+{
+	int	ret = 0;
+
+	switch (cq->op) {
+	case MISDN_CTRL_GETOP:
+		cq->op = MISDN_CTRL_LOOP;
+		break;
+	case MISDN_CTRL_LOOP:
+		/* cq->channel: 0 disable, 1 B1 loop 2 B2 loop, 3 both */
+		if (cq->channel < 0 || cq->channel > 3) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = card->isac.ctrl(&card->isac, HW_TESTLOOP, cq->channel);
+		break;
+	default:
+		pr_info("%s: %s unknown Op %x\n", card->name, __func__, cq->op);
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static int
+open_bchannel(struct tiger_hw *card, struct channel_req *rq)
+{
+	struct bchannel *bch;
+
+	if (rq->adr.channel > 2)
+		return -EINVAL;
+	if (rq->protocol == ISDN_P_NONE)
+		return -EINVAL;
+	bch = &card->bc[rq->adr.channel - 1].bch;
+	if (test_and_set_bit(FLG_OPEN, &bch->Flags))
+		return -EBUSY; /* b-channel can be only open once */
+	test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
+	bch->ch.protocol = rq->protocol;
+	rq->ch = &bch->ch;
+	return 0;
+}
+
+/*
+ * device control function
+ */
+static int
+nj_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
+{
+	struct mISDNdevice	*dev = container_of(ch, struct mISDNdevice, D);
+	struct dchannel		*dch = container_of(dev, struct dchannel, dev);
+	struct tiger_hw	*card = dch->hw;
+	struct channel_req	*rq;
+	int			err = 0;
+
+	pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
+	switch (cmd) {
+	case OPEN_CHANNEL:
+		rq = arg;
+		if (rq->protocol == ISDN_P_TE_S0)
+			err = card->isac.open(&card->isac, rq);
+		else
+			err = open_bchannel(card, rq);
+		if (err)
+			break;
+		if (!try_module_get(THIS_MODULE))
+			pr_info("%s: cannot get module\n", card->name);
+		break;
+	case CLOSE_CHANNEL:
+		pr_debug("%s: dev(%d) close from %p\n", card->name, dch->dev.id,
+			__builtin_return_address(0));
+		module_put(THIS_MODULE);
+		break;
+	case CONTROL_CHANNEL:
+		err = channel_ctrl(card, arg);
+		break;
+	default:
+		pr_debug("%s: %s unknown command %x\n",
+			card->name, __func__, cmd);
+		return -EINVAL;
+	}
+	return err;
+}
+
+static int
+nj_init_card(struct tiger_hw *card)
+{
+	u_long flags;
+	int ret;
+
+	spin_lock_irqsave(&card->lock, flags);
+	nj_disable_hwirq(card);
+	spin_unlock_irqrestore(&card->lock, flags);
+
+	card->irq = card->pdev->irq;
+	if (request_irq(card->irq, nj_irq, IRQF_SHARED, card->name, card)) {
+		pr_info("%s: couldn't get interrupt %d\n",
+			card->name, card->irq);
+		card->irq = -1;
+		return -EIO;
+	}
+
+	spin_lock_irqsave(&card->lock, flags);
+	nj_reset(card);
+	ret = card->isac.init(&card->isac);
+	if (ret)
+		goto error;
+	ret = inittiger(card);
+	if (ret)
+		goto error;
+	mode_tiger(&card->bc[0], ISDN_P_NONE);
+	mode_tiger(&card->bc[1], ISDN_P_NONE);
+error:
+	spin_unlock_irqrestore(&card->lock, flags);
+	return ret;
+}
+
+
+static void
+nj_release(struct tiger_hw *card)
+{
+	u_long flags;
+	int i;
+
+	if (card->base_s) {
+		spin_lock_irqsave(&card->lock, flags);
+		nj_disable_hwirq(card);
+		mode_tiger(&card->bc[0], ISDN_P_NONE);
+		mode_tiger(&card->bc[1], ISDN_P_NONE);
+		card->isac.release(&card->isac);
+		spin_unlock_irqrestore(&card->lock, flags);
+		release_region(card->base, card->base_s);
+		card->base_s = 0;
+	}
+	if (card->irq > 0)
+		free_irq(card->irq, card);
+	if (card->isac.dch.dev.dev.class)
+		mISDN_unregister_device(&card->isac.dch.dev);
+	
+	for (i = 0; i < 2; i++) {
+		mISDN_freebchannel(&card->bc[i].bch);
+		kfree(card->bc[i].hsbuf);
+		kfree(card->bc[i].hrbuf);
+	}
+	if (card->dma_p)
+		pci_free_consistent(card->pdev, NJ_DMA_SIZE,
+			card->dma_p, card->dma);
+	write_lock_irqsave(&card_lock, flags);
+	list_del(&card->list);
+	write_unlock_irqrestore(&card_lock, flags);
+	pci_clear_master(card->pdev);
+	pci_disable_device(card->pdev);
+	pci_set_drvdata(card->pdev, NULL);
+	kfree(card);
+}
+
+
+static int
+nj_setup(struct tiger_hw *card)
+{
+	card->base = pci_resource_start(card->pdev, 0);
+	card->base_s = pci_resource_len(card->pdev, 0);
+	if (!request_region(card->base, card->base_s, card->name)) {
+		pr_info("%s: NETjet config port %#x-%#x already in use\n",
+			card->name, card->base,
+			(u32)(card->base + card->base_s - 1));
+		card->base_s = 0;
+		return -EIO;
+	}
+	ASSIGN_FUNC(nj, ISAC, card->isac);
+	return 0;
+}
+
+
+static int __devinit
+setup_instance(struct tiger_hw *card)
+{
+	int i, err;
+	u_long flags;
+
+	snprintf(card->name, MISDN_MAX_IDLEN - 1, "netjet.%d", nj_cnt + 1);
+	write_lock_irqsave(&card_lock, flags);
+	list_add_tail(&card->list, &Cards);
+	write_unlock_irqrestore(&card_lock, flags);
+
+	_set_debug(card);
+	card->isac.name = card->name;
+	spin_lock_init(&card->lock);
+	card->isac.hwlock = &card->lock;
+	mISDNisac_init(&card->isac, card);
+
+	card->isac.dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
+		(1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
+	card->isac.dch.dev.D.ctrl = nj_dctrl;
+	for (i = 0; i < 2; i++) {
+		card->bc[i].bch.nr = i + 1;
+		set_channelmap(i + 1, card->isac.dch.dev.channelmap);
+		mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM);
+		card->bc[i].bch.hw = card;
+		card->bc[i].bch.ch.send = nj_l2l1B;
+		card->bc[i].bch.ch.ctrl = nj_bctrl;
+		card->bc[i].bch.ch.nr = i + 1;
+		list_add(&card->bc[i].bch.ch.list,
+			&card->isac.dch.dev.bchannels);
+		card->bc[i].bch.hw = card;
+	}
+	err = nj_setup(card);
+	if (err)
+		goto error;
+	err = mISDN_register_device(&card->isac.dch.dev, &card->pdev->dev,
+		card->name);
+	if (err)
+		goto error;
+	err = nj_init_card(card);
+	if (!err)  {
+		nj_cnt++;
+		pr_notice("Netjet %d cards installed\n", nj_cnt);
+		return 0;
+	}
+error:
+	nj_release(card);
+	return err;
+}
+
+static int __devinit
+nj_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	int err = -ENOMEM;
+	int cfg;
+	struct tiger_hw *card;
+
+	if (pdev->subsystem_vendor == 0x8086 &&
+	    pdev->subsystem_device == 0x0003) {
+		pr_notice("Netjet: Digium X100P/X101P not handled\n");
+		return -ENODEV;
+	}
+
+	if (pdev->subsystem_vendor == 0x55 &&
+	    pdev->subsystem_device == 0x02) {
+		pr_notice("Netjet: Enter!Now not handled yet\n");
+		return -ENODEV;
+	}
+
+	card = kzalloc(sizeof(struct tiger_hw), GFP_ATOMIC);
+	if (!card) {
+		pr_info("No kmem for Netjet\n");
+		return err;
+	}
+
+	card->pdev = pdev;
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		kfree(card);
+		return err;
+	}
+
+	printk(KERN_INFO "nj_probe(mISDN): found adapter at %s\n",
+		pci_name(pdev));
+
+	pci_set_master(pdev);
+
+	/* the TJ300 and TJ320 must be detected, the IRQ handling is different
+	 * unfortunately the chips use the same device ID, but the TJ320 has
+	 * the bit20 in status PCI cfg register set
+	 */
+	pci_read_config_dword(pdev, 0x04, &cfg);
+	if (cfg & 0x00100000)
+		card->typ = NETJET_S_TJ320;
+	else
+		card->typ = NETJET_S_TJ300;
+
+	card->base = pci_resource_start(pdev, 0);
+	card->irq = pdev->irq;
+	pci_set_drvdata(pdev, card);
+	err = setup_instance(card);
+	if (err)
+		pci_set_drvdata(pdev, NULL);
+
+	return err;
+}
+
+
+static void __devexit nj_remove(struct pci_dev *pdev)
+{
+	struct tiger_hw *card = pci_get_drvdata(pdev);
+
+	if (card)
+		nj_release(card);
+	else
+		pr_info("%s drvdata already removed\n", __func__);
+}
+
+/* We cannot select cards with PCI_SUB... IDs, since here are cards with
+ * SUB IDs set to PCI_ANY_ID, so we need to match all and reject
+ * known other cards which not work with this driver - see probe function */
+static struct pci_device_id nj_pci_ids[] __devinitdata = {
+	{ PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_300,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, nj_pci_ids);
+
+static struct pci_driver nj_driver = {
+	.name = "netjet",
+	.probe = nj_probe,
+	.remove = __devexit_p(nj_remove),
+	.id_table = nj_pci_ids,
+};
+
+static int __init nj_init(void)
+{
+	int err;
+
+	pr_notice("Netjet PCI driver Rev. %s\n", NETJET_REV);
+	err = pci_register_driver(&nj_driver);
+	return err;
+}
+
+static void __exit nj_cleanup(void)
+{
+	pci_unregister_driver(&nj_driver);
+}
+
+module_init(nj_init);
+module_exit(nj_cleanup);