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Message-Id: <a900845e56617edc005fd8f35bfd5a407aaf96c8.1248546896.git.keil@b1-systems.de>
Date: Thu, 23 Jul 2009 10:03:05 +0200
From: Karsten Keil <keil@...systems.de>
To: linux-kernel@...r.kernel.org
Cc: netdev@...r.kernel.org, David Miller <davem@...emloft.net>,
i4ldeveloper@...tserv.isdn4linux.de
Subject: [PATCH 10/13] mISDN: Add support for Traverse Technologies NETJet PCI cards
Add support for cards based on the Tiger 300 and Tiger 320
ISDN PCI chip.
Currently only the ISAC ISDN line interface is supported.
Signed-off-by: Karsten Keil <keil@...systems.de>
---
drivers/isdn/hardware/mISDN/Kconfig | 9 +
drivers/isdn/hardware/mISDN/Makefile | 1 +
drivers/isdn/hardware/mISDN/netjet.c | 1156 ++++++++++++++++++++++++++++++++++
drivers/isdn/hardware/mISDN/netjet.h | 58 ++
4 files changed, 1224 insertions(+), 0 deletions(-)
create mode 100644 drivers/isdn/hardware/mISDN/netjet.c
create mode 100644 drivers/isdn/hardware/mISDN/netjet.h
diff --git a/drivers/isdn/hardware/mISDN/Kconfig b/drivers/isdn/hardware/mISDN/Kconfig
index d72586e..bde55d7 100644
--- a/drivers/isdn/hardware/mISDN/Kconfig
+++ b/drivers/isdn/hardware/mISDN/Kconfig
@@ -72,6 +72,15 @@ config MISDN_W6692
help
Enable support for Winbond 6692 PCI chip based cards.
+config MISDN_NETJET
+ tristate "Support for NETJet cards"
+ depends on MISDN
+ depends on PCI
+ select MISDN_IPAC
+ select ISDN_HDLC
+ help
+ Enable support for Traverse Technologies NETJet PCI cards.
+
config MISDN_IPAC
tristate
diff --git a/drivers/isdn/hardware/mISDN/Makefile b/drivers/isdn/hardware/mISDN/Makefile
index 61dd5a5..2987d99 100644
--- a/drivers/isdn/hardware/mISDN/Makefile
+++ b/drivers/isdn/hardware/mISDN/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_MISDN_AVMFRITZ) += avmfritz.o
obj-$(CONFIG_MISDN_SPEEDFAX) += speedfax.o
obj-$(CONFIG_MISDN_INFINEON) += mISDNinfineon.o
obj-$(CONFIG_MISDN_W6692) += w6692.o
+obj-$(CONFIG_MISDN_NETJET) += netjet.o
# chip modules
obj-$(CONFIG_MISDN_IPAC) += mISDNipac.o
obj-$(CONFIG_MISDN_ISAR) += mISDNisar.o
diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c
new file mode 100644
index 0000000..6c1b164
--- /dev/null
+++ b/drivers/isdn/hardware/mISDN/netjet.c
@@ -0,0 +1,1156 @@
+/*
+ * NETJet mISDN driver
+ *
+ * Author Karsten Keil <keil@...n4linux.de>
+ *
+ * Copyright 2009 by Karsten Keil <keil@...n4linux.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);
diff --git a/drivers/isdn/hardware/mISDN/netjet.h b/drivers/isdn/hardware/mISDN/netjet.h
new file mode 100644
index 0000000..d061ff9
--- /dev/null
+++ b/drivers/isdn/hardware/mISDN/netjet.h
@@ -0,0 +1,58 @@
+/*
+ * NETjet common header file
+ *
+ * Author Karsten Keil
+ * based on work of Matt Henderson and Daniel Potts,
+ * Traverse Technologies P/L www.traverse.com.au
+ *
+ * Copyright 2009 by Karsten Keil <keil@...n4linux.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.
+ *
+ */
+
+#define NJ_CTRL 0x00
+#define NJ_DMACTRL 0x01
+#define NJ_AUXCTRL 0x02
+#define NJ_AUXDATA 0x03
+#define NJ_IRQMASK0 0x04
+#define NJ_IRQMASK1 0x05
+#define NJ_IRQSTAT0 0x06
+#define NJ_IRQSTAT1 0x07
+#define NJ_DMA_READ_START 0x08
+#define NJ_DMA_READ_IRQ 0x0c
+#define NJ_DMA_READ_END 0x10
+#define NJ_DMA_READ_ADR 0x14
+#define NJ_DMA_WRITE_START 0x18
+#define NJ_DMA_WRITE_IRQ 0x1c
+#define NJ_DMA_WRITE_END 0x20
+#define NJ_DMA_WRITE_ADR 0x24
+#define NJ_PULSE_CNT 0x28
+
+#define NJ_ISAC_OFF 0xc0
+#define NJ_ISACIRQ 0x10
+
+#define NJ_IRQM0_RD_MASK 0x03
+#define NJ_IRQM0_RD_IRQ 0x01
+#define NJ_IRQM0_RD_END 0x02
+#define NJ_IRQM0_WR_MASK 0x0c
+#define NJ_IRQM0_WR_IRQ 0x04
+#define NJ_IRQM0_WR_END 0x08
+
+/* one page here is no need to be smaller */
+#define NJ_DMA_SIZE 4096
+/* 2 * 64 byte is a compromise between IRQ count and latency */
+#define NJ_DMA_RXSIZE 128 /* 2 * 64 */
+#define NJ_DMA_TXSIZE 128 /* 2 * 64 */
+
--
1.6.0.2
--
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