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Diffstat (limited to 'drivers/isdn/hardware/mISDN/hfcsusb.c')
-rw-r--r--drivers/isdn/hardware/mISDN/hfcsusb.c2148
1 files changed, 2148 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c
new file mode 100644
index 000000000..e8b37bd5e
--- /dev/null
+++ b/drivers/isdn/hardware/mISDN/hfcsusb.c
@@ -0,0 +1,2148 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* hfcsusb.c
+ * mISDN driver for Colognechip HFC-S USB chip
+ *
+ * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de)
+ * Copyright 2008 by Martin Bachem (info@bachem-it.com)
+ *
+ * module params
+ * debug=<n>, default=0, with n=0xHHHHGGGG
+ * H - l1 driver flags described in hfcsusb.h
+ * G - common mISDN debug flags described at mISDNhw.h
+ *
+ * poll=<n>, default 128
+ * n : burst size of PH_DATA_IND at transparent rx data
+ *
+ * Revision: 0.3.3 (socket), 2008-11-05
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/usb.h>
+#include <linux/mISDNhw.h>
+#include <linux/slab.h>
+#include "hfcsusb.h"
+
+static unsigned int debug;
+static int poll = DEFAULT_TRANSP_BURST_SZ;
+
+static LIST_HEAD(HFClist);
+static DEFINE_RWLOCK(HFClock);
+
+
+MODULE_AUTHOR("Martin Bachem");
+MODULE_LICENSE("GPL");
+module_param(debug, uint, S_IRUGO | S_IWUSR);
+module_param(poll, int, 0);
+
+static int hfcsusb_cnt;
+
+/* some function prototypes */
+static void hfcsusb_ph_command(struct hfcsusb *hw, u_char command);
+static void release_hw(struct hfcsusb *hw);
+static void reset_hfcsusb(struct hfcsusb *hw);
+static void setPortMode(struct hfcsusb *hw);
+static void hfcsusb_start_endpoint(struct hfcsusb *hw, int channel);
+static void hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel);
+static int hfcsusb_setup_bch(struct bchannel *bch, int protocol);
+static void deactivate_bchannel(struct bchannel *bch);
+static int hfcsusb_ph_info(struct hfcsusb *hw);
+
+/* start next background transfer for control channel */
+static void
+ctrl_start_transfer(struct hfcsusb *hw)
+{
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
+
+ if (hw->ctrl_cnt) {
+ hw->ctrl_urb->pipe = hw->ctrl_out_pipe;
+ hw->ctrl_urb->setup_packet = (u_char *)&hw->ctrl_write;
+ hw->ctrl_urb->transfer_buffer = NULL;
+ hw->ctrl_urb->transfer_buffer_length = 0;
+ hw->ctrl_write.wIndex =
+ cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].hfcs_reg);
+ hw->ctrl_write.wValue =
+ cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].reg_val);
+
+ usb_submit_urb(hw->ctrl_urb, GFP_ATOMIC);
+ }
+}
+
+/*
+ * queue a control transfer request to write HFC-S USB
+ * chip register using CTRL resuest queue
+ */
+static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val)
+{
+ struct ctrl_buf *buf;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s reg(0x%02x) val(0x%02x)\n",
+ hw->name, __func__, reg, val);
+
+ spin_lock(&hw->ctrl_lock);
+ if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) {
+ spin_unlock(&hw->ctrl_lock);
+ return 1;
+ }
+ buf = &hw->ctrl_buff[hw->ctrl_in_idx];
+ buf->hfcs_reg = reg;
+ buf->reg_val = val;
+ if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
+ hw->ctrl_in_idx = 0;
+ if (++hw->ctrl_cnt == 1)
+ ctrl_start_transfer(hw);
+ spin_unlock(&hw->ctrl_lock);
+
+ return 0;
+}
+
+/* control completion routine handling background control cmds */
+static void
+ctrl_complete(struct urb *urb)
+{
+ struct hfcsusb *hw = (struct hfcsusb *) urb->context;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
+
+ urb->dev = hw->dev;
+ if (hw->ctrl_cnt) {
+ hw->ctrl_cnt--; /* decrement actual count */
+ if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
+ hw->ctrl_out_idx = 0; /* pointer wrap */
+
+ ctrl_start_transfer(hw); /* start next transfer */
+ }
+}
+
+/* handle LED bits */
+static void
+set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on)
+{
+ if (set_on) {
+ if (led_bits < 0)
+ hw->led_state &= ~abs(led_bits);
+ else
+ hw->led_state |= led_bits;
+ } else {
+ if (led_bits < 0)
+ hw->led_state |= abs(led_bits);
+ else
+ hw->led_state &= ~led_bits;
+ }
+}
+
+/* handle LED requests */
+static void
+handle_led(struct hfcsusb *hw, int event)
+{
+ struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *)
+ hfcsusb_idtab[hw->vend_idx].driver_info;
+ __u8 tmpled;
+
+ if (driver_info->led_scheme == LED_OFF)
+ return;
+ tmpled = hw->led_state;
+
+ switch (event) {
+ case LED_POWER_ON:
+ set_led_bit(hw, driver_info->led_bits[0], 1);
+ set_led_bit(hw, driver_info->led_bits[1], 0);
+ set_led_bit(hw, driver_info->led_bits[2], 0);
+ set_led_bit(hw, driver_info->led_bits[3], 0);
+ break;
+ case LED_POWER_OFF:
+ set_led_bit(hw, driver_info->led_bits[0], 0);
+ set_led_bit(hw, driver_info->led_bits[1], 0);
+ set_led_bit(hw, driver_info->led_bits[2], 0);
+ set_led_bit(hw, driver_info->led_bits[3], 0);
+ break;
+ case LED_S0_ON:
+ set_led_bit(hw, driver_info->led_bits[1], 1);
+ break;
+ case LED_S0_OFF:
+ set_led_bit(hw, driver_info->led_bits[1], 0);
+ break;
+ case LED_B1_ON:
+ set_led_bit(hw, driver_info->led_bits[2], 1);
+ break;
+ case LED_B1_OFF:
+ set_led_bit(hw, driver_info->led_bits[2], 0);
+ break;
+ case LED_B2_ON:
+ set_led_bit(hw, driver_info->led_bits[3], 1);
+ break;
+ case LED_B2_OFF:
+ set_led_bit(hw, driver_info->led_bits[3], 0);
+ break;
+ }
+
+ if (hw->led_state != tmpled) {
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s reg(0x%02x) val(x%02x)\n",
+ hw->name, __func__,
+ HFCUSB_P_DATA, hw->led_state);
+
+ write_reg(hw, HFCUSB_P_DATA, hw->led_state);
+ }
+}
+
+/*
+ * Layer2 -> Layer 1 Bchannel data
+ */
+static int
+hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+ struct bchannel *bch = container_of(ch, struct bchannel, ch);
+ struct hfcsusb *hw = bch->hw;
+ int ret = -EINVAL;
+ struct mISDNhead *hh = mISDN_HEAD_P(skb);
+ u_long flags;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
+
+ switch (hh->prim) {
+ case PH_DATA_REQ:
+ spin_lock_irqsave(&hw->lock, flags);
+ ret = bchannel_senddata(bch, skb);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n",
+ hw->name, __func__, ret);
+ if (ret > 0)
+ ret = 0;
+ return ret;
+ case PH_ACTIVATE_REQ:
+ if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) {
+ hfcsusb_start_endpoint(hw, bch->nr - 1);
+ ret = hfcsusb_setup_bch(bch, ch->protocol);
+ } else
+ ret = 0;
+ if (!ret)
+ _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
+ 0, NULL, GFP_KERNEL);
+ break;
+ case PH_DEACTIVATE_REQ:
+ deactivate_bchannel(bch);
+ _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY,
+ 0, NULL, GFP_KERNEL);
+ ret = 0;
+ break;
+ }
+ if (!ret)
+ dev_kfree_skb(skb);
+ return ret;
+}
+
+/*
+ * send full D/B channel status information
+ * as MPH_INFORMATION_IND
+ */
+static int
+hfcsusb_ph_info(struct hfcsusb *hw)
+{
+ struct ph_info *phi;
+ struct dchannel *dch = &hw->dch;
+ int i;
+
+ phi = kzalloc(struct_size(phi, bch, dch->dev.nrbchan), GFP_ATOMIC);
+ if (!phi)
+ return -ENOMEM;
+
+ phi->dch.ch.protocol = hw->protocol;
+ phi->dch.ch.Flags = dch->Flags;
+ phi->dch.state = dch->state;
+ phi->dch.num_bch = dch->dev.nrbchan;
+ for (i = 0; i < dch->dev.nrbchan; i++) {
+ phi->bch[i].protocol = hw->bch[i].ch.protocol;
+ phi->bch[i].Flags = hw->bch[i].Flags;
+ }
+ _queue_data(&dch->dev.D, MPH_INFORMATION_IND, MISDN_ID_ANY,
+ struct_size(phi, bch, dch->dev.nrbchan), phi, GFP_ATOMIC);
+ kfree(phi);
+
+ return 0;
+}
+
+/*
+ * Layer2 -> Layer 1 Dchannel data
+ */
+static int
+hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
+{
+ struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
+ struct dchannel *dch = container_of(dev, struct dchannel, dev);
+ struct mISDNhead *hh = mISDN_HEAD_P(skb);
+ struct hfcsusb *hw = dch->hw;
+ int ret = -EINVAL;
+ u_long flags;
+
+ switch (hh->prim) {
+ case PH_DATA_REQ:
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n",
+ hw->name, __func__);
+
+ spin_lock_irqsave(&hw->lock, flags);
+ ret = dchannel_senddata(dch, skb);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ if (ret > 0) {
+ ret = 0;
+ queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL);
+ }
+ break;
+
+ case PH_ACTIVATE_REQ:
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n",
+ hw->name, __func__,
+ (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE");
+
+ if (hw->protocol == ISDN_P_NT_S0) {
+ ret = 0;
+ if (test_bit(FLG_ACTIVE, &dch->Flags)) {
+ _queue_data(&dch->dev.D,
+ PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
+ NULL, GFP_ATOMIC);
+ } else {
+ hfcsusb_ph_command(hw,
+ HFC_L1_ACTIVATE_NT);
+ test_and_set_bit(FLG_L2_ACTIVATED,
+ &dch->Flags);
+ }
+ } else {
+ hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE);
+ ret = l1_event(dch->l1, hh->prim);
+ }
+ break;
+
+ case PH_DEACTIVATE_REQ:
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n",
+ hw->name, __func__);
+ test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
+
+ if (hw->protocol == ISDN_P_NT_S0) {
+ struct sk_buff_head free_queue;
+
+ __skb_queue_head_init(&free_queue);
+ hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT);
+ spin_lock_irqsave(&hw->lock, flags);
+ skb_queue_splice_init(&dch->squeue, &free_queue);
+ if (dch->tx_skb) {
+ __skb_queue_tail(&free_queue, dch->tx_skb);
+ dch->tx_skb = NULL;
+ }
+ dch->tx_idx = 0;
+ if (dch->rx_skb) {
+ __skb_queue_tail(&free_queue, dch->rx_skb);
+ dch->rx_skb = NULL;
+ }
+ test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ __skb_queue_purge(&free_queue);
+#ifdef FIXME
+ if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
+ dchannel_sched_event(&hc->dch, D_CLEARBUSY);
+#endif
+ ret = 0;
+ } else
+ ret = l1_event(dch->l1, hh->prim);
+ break;
+ case MPH_INFORMATION_REQ:
+ ret = hfcsusb_ph_info(hw);
+ break;
+ }
+
+ return ret;
+}
+
+/*
+ * Layer 1 callback function
+ */
+static int
+hfc_l1callback(struct dchannel *dch, u_int cmd)
+{
+ struct hfcsusb *hw = dch->hw;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s cmd 0x%x\n",
+ hw->name, __func__, cmd);
+
+ switch (cmd) {
+ case INFO3_P8:
+ case INFO3_P10:
+ case HW_RESET_REQ:
+ case HW_POWERUP_REQ:
+ break;
+
+ case HW_DEACT_REQ:
+ skb_queue_purge(&dch->squeue);
+ if (dch->tx_skb) {
+ dev_kfree_skb(dch->tx_skb);
+ dch->tx_skb = NULL;
+ }
+ dch->tx_idx = 0;
+ if (dch->rx_skb) {
+ dev_kfree_skb(dch->rx_skb);
+ dch->rx_skb = NULL;
+ }
+ test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
+ break;
+ case PH_ACTIVATE_IND:
+ test_and_set_bit(FLG_ACTIVE, &dch->Flags);
+ _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
+ GFP_ATOMIC);
+ break;
+ case PH_DEACTIVATE_IND:
+ test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
+ _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
+ GFP_ATOMIC);
+ break;
+ default:
+ if (dch->debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: unknown cmd %x\n",
+ hw->name, __func__, cmd);
+ return -1;
+ }
+ return hfcsusb_ph_info(hw);
+}
+
+static int
+open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch,
+ struct channel_req *rq)
+{
+ int err = 0;
+
+ if (debug & DEBUG_HW_OPEN)
+ printk(KERN_DEBUG "%s: %s: dev(%d) open addr(%i) from %p\n",
+ hw->name, __func__, hw->dch.dev.id, rq->adr.channel,
+ __builtin_return_address(0));
+ if (rq->protocol == ISDN_P_NONE)
+ return -EINVAL;
+
+ test_and_clear_bit(FLG_ACTIVE, &hw->dch.Flags);
+ test_and_clear_bit(FLG_ACTIVE, &hw->ech.Flags);
+ hfcsusb_start_endpoint(hw, HFC_CHAN_D);
+
+ /* E-Channel logging */
+ if (rq->adr.channel == 1) {
+ if (hw->fifos[HFCUSB_PCM_RX].pipe) {
+ hfcsusb_start_endpoint(hw, HFC_CHAN_E);
+ set_bit(FLG_ACTIVE, &hw->ech.Flags);
+ _queue_data(&hw->ech.dev.D, PH_ACTIVATE_IND,
+ MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
+ } else
+ return -EINVAL;
+ }
+
+ if (!hw->initdone) {
+ hw->protocol = rq->protocol;
+ if (rq->protocol == ISDN_P_TE_S0) {
+ err = create_l1(&hw->dch, hfc_l1callback);
+ if (err)
+ return err;
+ }
+ setPortMode(hw);
+ ch->protocol = rq->protocol;
+ hw->initdone = 1;
+ } else {
+ if (rq->protocol != ch->protocol)
+ return -EPROTONOSUPPORT;
+ }
+
+ if (((ch->protocol == ISDN_P_NT_S0) && (hw->dch.state == 3)) ||
+ ((ch->protocol == ISDN_P_TE_S0) && (hw->dch.state == 7)))
+ _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
+ 0, NULL, GFP_KERNEL);
+ rq->ch = ch;
+ if (!try_module_get(THIS_MODULE))
+ printk(KERN_WARNING "%s: %s: cannot get module\n",
+ hw->name, __func__);
+ return 0;
+}
+
+static int
+open_bchannel(struct hfcsusb *hw, struct channel_req *rq)
+{
+ struct bchannel *bch;
+
+ if (rq->adr.channel == 0 || rq->adr.channel > 2)
+ return -EINVAL;
+ if (rq->protocol == ISDN_P_NONE)
+ return -EINVAL;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s B%i\n",
+ hw->name, __func__, rq->adr.channel);
+
+ bch = &hw->bch[rq->adr.channel - 1];
+ if (test_and_set_bit(FLG_OPEN, &bch->Flags))
+ return -EBUSY; /* b-channel can be only open once */
+ bch->ch.protocol = rq->protocol;
+ rq->ch = &bch->ch;
+
+ if (!try_module_get(THIS_MODULE))
+ printk(KERN_WARNING "%s: %s:cannot get module\n",
+ hw->name, __func__);
+ return 0;
+}
+
+static int
+channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq)
+{
+ int ret = 0;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s op(0x%x) channel(0x%x)\n",
+ hw->name, __func__, (cq->op), (cq->channel));
+
+ switch (cq->op) {
+ case MISDN_CTRL_GETOP:
+ cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT |
+ MISDN_CTRL_DISCONNECT;
+ break;
+ default:
+ printk(KERN_WARNING "%s: %s: unknown Op %x\n",
+ hw->name, __func__, cq->op);
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+/*
+ * device control function
+ */
+static int
+hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
+{
+ struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
+ struct dchannel *dch = container_of(dev, struct dchannel, dev);
+ struct hfcsusb *hw = dch->hw;
+ struct channel_req *rq;
+ int err = 0;
+
+ if (dch->debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: cmd:%x %p\n",
+ hw->name, __func__, cmd, arg);
+ switch (cmd) {
+ case OPEN_CHANNEL:
+ rq = arg;
+ if ((rq->protocol == ISDN_P_TE_S0) ||
+ (rq->protocol == ISDN_P_NT_S0))
+ err = open_dchannel(hw, ch, rq);
+ else
+ err = open_bchannel(hw, rq);
+ if (!err)
+ hw->open++;
+ break;
+ case CLOSE_CHANNEL:
+ hw->open--;
+ if (debug & DEBUG_HW_OPEN)
+ printk(KERN_DEBUG
+ "%s: %s: dev(%d) close from %p (open %d)\n",
+ hw->name, __func__, hw->dch.dev.id,
+ __builtin_return_address(0), hw->open);
+ if (!hw->open) {
+ hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
+ if (hw->fifos[HFCUSB_PCM_RX].pipe)
+ hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
+ handle_led(hw, LED_POWER_ON);
+ }
+ module_put(THIS_MODULE);
+ break;
+ case CONTROL_CHANNEL:
+ err = channel_ctrl(hw, arg);
+ break;
+ default:
+ if (dch->debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: unknown command %x\n",
+ hw->name, __func__, cmd);
+ return -EINVAL;
+ }
+ return err;
+}
+
+/*
+ * S0 TE state change event handler
+ */
+static void
+ph_state_te(struct dchannel *dch)
+{
+ struct hfcsusb *hw = dch->hw;
+
+ if (debug & DEBUG_HW) {
+ if (dch->state <= HFC_MAX_TE_LAYER1_STATE)
+ printk(KERN_DEBUG "%s: %s: %s\n", hw->name, __func__,
+ HFC_TE_LAYER1_STATES[dch->state]);
+ else
+ printk(KERN_DEBUG "%s: %s: TE F%d\n",
+ hw->name, __func__, dch->state);
+ }
+
+ switch (dch->state) {
+ case 0:
+ l1_event(dch->l1, HW_RESET_IND);
+ break;
+ case 3:
+ l1_event(dch->l1, HW_DEACT_IND);
+ break;
+ case 5:
+ case 8:
+ l1_event(dch->l1, ANYSIGNAL);
+ break;
+ case 6:
+ l1_event(dch->l1, INFO2);
+ break;
+ case 7:
+ l1_event(dch->l1, INFO4_P8);
+ break;
+ }
+ if (dch->state == 7)
+ handle_led(hw, LED_S0_ON);
+ else
+ handle_led(hw, LED_S0_OFF);
+}
+
+/*
+ * S0 NT state change event handler
+ */
+static void
+ph_state_nt(struct dchannel *dch)
+{
+ struct hfcsusb *hw = dch->hw;
+
+ if (debug & DEBUG_HW) {
+ if (dch->state <= HFC_MAX_NT_LAYER1_STATE)
+ printk(KERN_DEBUG "%s: %s: %s\n",
+ hw->name, __func__,
+ HFC_NT_LAYER1_STATES[dch->state]);
+
+ else
+ printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n",
+ hw->name, __func__, dch->state);
+ }
+
+ switch (dch->state) {
+ case (1):
+ test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
+ test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
+ hw->nt_timer = 0;
+ hw->timers &= ~NT_ACTIVATION_TIMER;
+ handle_led(hw, LED_S0_OFF);
+ break;
+
+ case (2):
+ if (hw->nt_timer < 0) {
+ hw->nt_timer = 0;
+ hw->timers &= ~NT_ACTIVATION_TIMER;
+ hfcsusb_ph_command(dch->hw, HFC_L1_DEACTIVATE_NT);
+ } else {
+ hw->timers |= NT_ACTIVATION_TIMER;
+ hw->nt_timer = NT_T1_COUNT;
+ /* allow G2 -> G3 transition */
+ write_reg(hw, HFCUSB_STATES, 2 | HFCUSB_NT_G2_G3);
+ }
+ break;
+ case (3):
+ hw->nt_timer = 0;
+ hw->timers &= ~NT_ACTIVATION_TIMER;
+ test_and_set_bit(FLG_ACTIVE, &dch->Flags);
+ _queue_data(&dch->dev.D, PH_ACTIVATE_IND,
+ MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
+ handle_led(hw, LED_S0_ON);
+ break;
+ case (4):
+ hw->nt_timer = 0;
+ hw->timers &= ~NT_ACTIVATION_TIMER;
+ break;
+ default:
+ break;
+ }
+ hfcsusb_ph_info(hw);
+}
+
+static void
+ph_state(struct dchannel *dch)
+{
+ struct hfcsusb *hw = dch->hw;
+
+ if (hw->protocol == ISDN_P_NT_S0)
+ ph_state_nt(dch);
+ else if (hw->protocol == ISDN_P_TE_S0)
+ ph_state_te(dch);
+}
+
+/*
+ * disable/enable BChannel for desired protocoll
+ */
+static int
+hfcsusb_setup_bch(struct bchannel *bch, int protocol)
+{
+ struct hfcsusb *hw = bch->hw;
+ __u8 conhdlc, sctrl, sctrl_r;
+
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n",
+ hw->name, __func__, bch->state, protocol,
+ bch->nr);
+
+ /* setup val for CON_HDLC */
+ conhdlc = 0;
+ if (protocol > ISDN_P_NONE)
+ conhdlc = 8; /* enable FIFO */
+
+ switch (protocol) {
+ case (-1): /* used for init */
+ bch->state = -1;
+ fallthrough;
+ case (ISDN_P_NONE):
+ if (bch->state == ISDN_P_NONE)
+ return 0; /* already in idle state */
+ bch->state = ISDN_P_NONE;
+ clear_bit(FLG_HDLC, &bch->Flags);
+ clear_bit(FLG_TRANSPARENT, &bch->Flags);
+ break;
+ case (ISDN_P_B_RAW):
+ conhdlc |= 2;
+ bch->state = protocol;
+ set_bit(FLG_TRANSPARENT, &bch->Flags);
+ break;
+ case (ISDN_P_B_HDLC):
+ bch->state = protocol;
+ set_bit(FLG_HDLC, &bch->Flags);
+ break;
+ default:
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: prot not known %x\n",
+ hw->name, __func__, protocol);
+ return -ENOPROTOOPT;
+ }
+
+ if (protocol >= ISDN_P_NONE) {
+ write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 0 : 2);
+ write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
+ write_reg(hw, HFCUSB_INC_RES_F, 2);
+ write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 1 : 3);
+ write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
+ write_reg(hw, HFCUSB_INC_RES_F, 2);
+
+ sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04);
+ sctrl_r = 0x0;
+ if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) {
+ sctrl |= 1;
+ sctrl_r |= 1;
+ }
+ if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) {
+ sctrl |= 2;
+ sctrl_r |= 2;
+ }
+ write_reg(hw, HFCUSB_SCTRL, sctrl);
+ write_reg(hw, HFCUSB_SCTRL_R, sctrl_r);
+
+ if (protocol > ISDN_P_NONE)
+ handle_led(hw, (bch->nr == 1) ? LED_B1_ON : LED_B2_ON);
+ else
+ handle_led(hw, (bch->nr == 1) ? LED_B1_OFF :
+ LED_B2_OFF);
+ }
+ return hfcsusb_ph_info(hw);
+}
+
+static void
+hfcsusb_ph_command(struct hfcsusb *hw, u_char command)
+{
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: %x\n",
+ hw->name, __func__, command);
+
+ switch (command) {
+ case HFC_L1_ACTIVATE_TE:
+ /* force sending sending INFO1 */
+ write_reg(hw, HFCUSB_STATES, 0x14);
+ /* start l1 activation */
+ write_reg(hw, HFCUSB_STATES, 0x04);
+ break;
+
+ case HFC_L1_FORCE_DEACTIVATE_TE:
+ write_reg(hw, HFCUSB_STATES, 0x10);
+ write_reg(hw, HFCUSB_STATES, 0x03);
+ break;
+
+ case HFC_L1_ACTIVATE_NT:
+ if (hw->dch.state == 3)
+ _queue_data(&hw->dch.dev.D, PH_ACTIVATE_IND,
+ MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
+ else
+ write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE |
+ HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3);
+ break;
+
+ case HFC_L1_DEACTIVATE_NT:
+ write_reg(hw, HFCUSB_STATES,
+ HFCUSB_DO_ACTION);
+ break;
+ }
+}
+
+/*
+ * Layer 1 B-channel hardware access
+ */
+static int
+channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
+{
+ return mISDN_ctrl_bchannel(bch, cq);
+}
+
+/* collect data from incoming interrupt or isochron USB data */
+static void
+hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len,
+ int finish)
+{
+ struct hfcsusb *hw = fifo->hw;
+ struct sk_buff *rx_skb = NULL;
+ int maxlen = 0;
+ int fifon = fifo->fifonum;
+ int i;
+ int hdlc = 0;
+ unsigned long flags;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s: fifo(%i) len(%i) "
+ "dch(%p) bch(%p) ech(%p)\n",
+ hw->name, __func__, fifon, len,
+ fifo->dch, fifo->bch, fifo->ech);
+
+ if (!len)
+ return;
+
+ if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) {
+ printk(KERN_DEBUG "%s: %s: undefined channel\n",
+ hw->name, __func__);
+ return;
+ }
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (fifo->dch) {
+ rx_skb = fifo->dch->rx_skb;
+ maxlen = fifo->dch->maxlen;
+ hdlc = 1;
+ }
+ if (fifo->bch) {
+ if (test_bit(FLG_RX_OFF, &fifo->bch->Flags)) {
+ fifo->bch->dropcnt += len;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+ maxlen = bchannel_get_rxbuf(fifo->bch, len);
+ rx_skb = fifo->bch->rx_skb;
+ if (maxlen < 0) {
+ if (rx_skb)
+ skb_trim(rx_skb, 0);
+ pr_warn("%s.B%d: No bufferspace for %d bytes\n",
+ hw->name, fifo->bch->nr, len);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+ maxlen = fifo->bch->maxlen;
+ hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
+ }
+ if (fifo->ech) {
+ rx_skb = fifo->ech->rx_skb;
+ maxlen = fifo->ech->maxlen;
+ hdlc = 1;
+ }
+
+ if (fifo->dch || fifo->ech) {
+ if (!rx_skb) {
+ rx_skb = mI_alloc_skb(maxlen, GFP_ATOMIC);
+ if (rx_skb) {
+ if (fifo->dch)
+ fifo->dch->rx_skb = rx_skb;
+ if (fifo->ech)
+ fifo->ech->rx_skb = rx_skb;
+ skb_trim(rx_skb, 0);
+ } else {
+ printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n",
+ hw->name, __func__);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+ }
+ /* D/E-Channel SKB range check */
+ if ((rx_skb->len + len) >= MAX_DFRAME_LEN_L1) {
+ printk(KERN_DEBUG "%s: %s: sbk mem exceeded "
+ "for fifo(%d) HFCUSB_D_RX\n",
+ hw->name, __func__, fifon);
+ skb_trim(rx_skb, 0);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+ }
+
+ skb_put_data(rx_skb, data, len);
+
+ if (hdlc) {
+ /* we have a complete hdlc packet */
+ if (finish) {
+ if ((rx_skb->len > 3) &&
+ (!(rx_skb->data[rx_skb->len - 1]))) {
+ if (debug & DBG_HFC_FIFO_VERBOSE) {
+ printk(KERN_DEBUG "%s: %s: fifon(%i)"
+ " new RX len(%i): ",
+ hw->name, __func__, fifon,
+ rx_skb->len);
+ i = 0;
+ while (i < rx_skb->len)
+ printk("%02x ",
+ rx_skb->data[i++]);
+ printk("\n");
+ }
+
+ /* remove CRC & status */
+ skb_trim(rx_skb, rx_skb->len - 3);
+
+ if (fifo->dch)
+ recv_Dchannel(fifo->dch);
+ if (fifo->bch)
+ recv_Bchannel(fifo->bch, MISDN_ID_ANY,
+ 0);
+ if (fifo->ech)
+ recv_Echannel(fifo->ech,
+ &hw->dch);
+ } else {
+ if (debug & DBG_HFC_FIFO_VERBOSE) {
+ printk(KERN_DEBUG
+ "%s: CRC or minlen ERROR fifon(%i) "
+ "RX len(%i): ",
+ hw->name, fifon, rx_skb->len);
+ i = 0;
+ while (i < rx_skb->len)
+ printk("%02x ",
+ rx_skb->data[i++]);
+ printk("\n");
+ }
+ skb_trim(rx_skb, 0);
+ }
+ }
+ } else {
+ /* deliver transparent data to layer2 */
+ recv_Bchannel(fifo->bch, MISDN_ID_ANY, false);
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+}
+
+static void
+fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
+ void *buf, int num_packets, int packet_size, int interval,
+ usb_complete_t complete, void *context)
+{
+ int k;
+
+ usb_fill_bulk_urb(urb, dev, pipe, buf, packet_size * num_packets,
+ complete, context);
+
+ urb->number_of_packets = num_packets;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->actual_length = 0;
+ urb->interval = interval;
+
+ for (k = 0; k < num_packets; k++) {
+ urb->iso_frame_desc[k].offset = packet_size * k;
+ urb->iso_frame_desc[k].length = packet_size;
+ urb->iso_frame_desc[k].actual_length = 0;
+ }
+}
+
+/* receive completion routine for all ISO tx fifos */
+static void
+rx_iso_complete(struct urb *urb)
+{
+ struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
+ struct usb_fifo *fifo = context_iso_urb->owner_fifo;
+ struct hfcsusb *hw = fifo->hw;
+ int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
+ status, iso_status, i;
+ __u8 *buf;
+ static __u8 eof[8];
+ __u8 s0_state;
+ unsigned long flags;
+
+ fifon = fifo->fifonum;
+ status = urb->status;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (fifo->stop_gracefull) {
+ fifo->stop_gracefull = 0;
+ fifo->active = 0;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ /*
+ * ISO transfer only partially completed,
+ * look at individual frame status for details
+ */
+ if (status == -EXDEV) {
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: with -EXDEV "
+ "urb->status %d, fifonum %d\n",
+ hw->name, __func__, status, fifon);
+
+ /* clear status, so go on with ISO transfers */
+ status = 0;
+ }
+
+ s0_state = 0;
+ if (fifo->active && !status) {
+ num_isoc_packets = iso_packets[fifon];
+ maxlen = fifo->usb_packet_maxlen;
+
+ for (k = 0; k < num_isoc_packets; ++k) {
+ len = urb->iso_frame_desc[k].actual_length;
+ offset = urb->iso_frame_desc[k].offset;
+ buf = context_iso_urb->buffer + offset;
+ iso_status = urb->iso_frame_desc[k].status;
+
+ if (iso_status && (debug & DBG_HFC_FIFO_VERBOSE)) {
+ printk(KERN_DEBUG "%s: %s: "
+ "ISO packet %i, status: %i\n",
+ hw->name, __func__, k, iso_status);
+ }
+
+ /* USB data log for every D ISO in */
+ if ((fifon == HFCUSB_D_RX) &&
+ (debug & DBG_HFC_USB_VERBOSE)) {
+ printk(KERN_DEBUG
+ "%s: %s: %d (%d/%d) len(%d) ",
+ hw->name, __func__, urb->start_frame,
+ k, num_isoc_packets - 1,
+ len);
+ for (i = 0; i < len; i++)
+ printk("%x ", buf[i]);
+ printk("\n");
+ }
+
+ if (!iso_status) {
+ if (fifo->last_urblen != maxlen) {
+ /*
+ * save fifo fill-level threshold bits
+ * to use them later in TX ISO URB
+ * completions
+ */
+ hw->threshold_mask = buf[1];
+
+ if (fifon == HFCUSB_D_RX)
+ s0_state = (buf[0] >> 4);
+
+ eof[fifon] = buf[0] & 1;
+ if (len > 2)
+ hfcsusb_rx_frame(fifo, buf + 2,
+ len - 2, (len < maxlen)
+ ? eof[fifon] : 0);
+ } else
+ hfcsusb_rx_frame(fifo, buf, len,
+ (len < maxlen) ?
+ eof[fifon] : 0);
+ fifo->last_urblen = len;
+ }
+ }
+
+ /* signal S0 layer1 state change */
+ if ((s0_state) && (hw->initdone) &&
+ (s0_state != hw->dch.state)) {
+ hw->dch.state = s0_state;
+ schedule_event(&hw->dch, FLG_PHCHANGE);
+ }
+
+ fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
+ context_iso_urb->buffer, num_isoc_packets,
+ fifo->usb_packet_maxlen, fifo->intervall,
+ (usb_complete_t)rx_iso_complete, urb->context);
+ errcode = usb_submit_urb(urb, GFP_ATOMIC);
+ if (errcode < 0) {
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: error submitting "
+ "ISO URB: %d\n",
+ hw->name, __func__, errcode);
+ }
+ } else {
+ if (status && (debug & DBG_HFC_URB_INFO))
+ printk(KERN_DEBUG "%s: %s: rx_iso_complete : "
+ "urb->status %d, fifonum %d\n",
+ hw->name, __func__, status, fifon);
+ }
+}
+
+/* receive completion routine for all interrupt rx fifos */
+static void
+rx_int_complete(struct urb *urb)
+{
+ int len, status, i;
+ __u8 *buf, maxlen, fifon;
+ struct usb_fifo *fifo = (struct usb_fifo *) urb->context;
+ struct hfcsusb *hw = fifo->hw;
+ static __u8 eof[8];
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (fifo->stop_gracefull) {
+ fifo->stop_gracefull = 0;
+ fifo->active = 0;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ fifon = fifo->fifonum;
+ if ((!fifo->active) || (urb->status)) {
+ if (debug & DBG_HFC_URB_ERROR)
+ printk(KERN_DEBUG
+ "%s: %s: RX-Fifo %i is going down (%i)\n",
+ hw->name, __func__, fifon, urb->status);
+
+ fifo->urb->interval = 0; /* cancel automatic rescheduling */
+ return;
+ }
+ len = urb->actual_length;
+ buf = fifo->buffer;
+ maxlen = fifo->usb_packet_maxlen;
+
+ /* USB data log for every D INT in */
+ if ((fifon == HFCUSB_D_RX) && (debug & DBG_HFC_USB_VERBOSE)) {
+ printk(KERN_DEBUG "%s: %s: D RX INT len(%d) ",
+ hw->name, __func__, len);
+ for (i = 0; i < len; i++)
+ printk("%02x ", buf[i]);
+ printk("\n");
+ }
+
+ if (fifo->last_urblen != fifo->usb_packet_maxlen) {
+ /* the threshold mask is in the 2nd status byte */
+ hw->threshold_mask = buf[1];
+
+ /* signal S0 layer1 state change */
+ if (hw->initdone && ((buf[0] >> 4) != hw->dch.state)) {
+ hw->dch.state = (buf[0] >> 4);
+ schedule_event(&hw->dch, FLG_PHCHANGE);
+ }
+
+ eof[fifon] = buf[0] & 1;
+ /* if we have more than the 2 status bytes -> collect data */
+ if (len > 2)
+ hfcsusb_rx_frame(fifo, buf + 2,
+ urb->actual_length - 2,
+ (len < maxlen) ? eof[fifon] : 0);
+ } else {
+ hfcsusb_rx_frame(fifo, buf, urb->actual_length,
+ (len < maxlen) ? eof[fifon] : 0);
+ }
+ fifo->last_urblen = urb->actual_length;
+
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ if (status) {
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: error resubmitting USB\n",
+ hw->name, __func__);
+ }
+}
+
+/* transmit completion routine for all ISO tx fifos */
+static void
+tx_iso_complete(struct urb *urb)
+{
+ struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
+ struct usb_fifo *fifo = context_iso_urb->owner_fifo;
+ struct hfcsusb *hw = fifo->hw;
+ struct sk_buff *tx_skb;
+ int k, tx_offset, num_isoc_packets, sink, remain, current_len,
+ errcode, hdlc, i;
+ int *tx_idx;
+ int frame_complete, fifon, status, fillempty = 0;
+ __u8 threshbit, *p;
+ unsigned long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (fifo->stop_gracefull) {
+ fifo->stop_gracefull = 0;
+ fifo->active = 0;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+
+ if (fifo->dch) {
+ tx_skb = fifo->dch->tx_skb;
+ tx_idx = &fifo->dch->tx_idx;
+ hdlc = 1;
+ } else if (fifo->bch) {
+ tx_skb = fifo->bch->tx_skb;
+ tx_idx = &fifo->bch->tx_idx;
+ hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
+ if (!tx_skb && !hdlc &&
+ test_bit(FLG_FILLEMPTY, &fifo->bch->Flags))
+ fillempty = 1;
+ } else {
+ printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n",
+ hw->name, __func__);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ return;
+ }
+
+ fifon = fifo->fifonum;
+ status = urb->status;
+
+ tx_offset = 0;
+
+ /*
+ * ISO transfer only partially completed,
+ * look at individual frame status for details
+ */
+ if (status == -EXDEV) {
+ if (debug & DBG_HFC_URB_ERROR)
+ printk(KERN_DEBUG "%s: %s: "
+ "-EXDEV (%i) fifon (%d)\n",
+ hw->name, __func__, status, fifon);
+
+ /* clear status, so go on with ISO transfers */
+ status = 0;
+ }
+
+ if (fifo->active && !status) {
+ /* is FifoFull-threshold set for our channel? */
+ threshbit = (hw->threshold_mask & (1 << fifon));
+ num_isoc_packets = iso_packets[fifon];
+
+ /* predict dataflow to avoid fifo overflow */
+ if (fifon >= HFCUSB_D_TX)
+ sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
+ else
+ sink = (threshbit) ? SINK_MIN : SINK_MAX;
+ fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
+ context_iso_urb->buffer, num_isoc_packets,
+ fifo->usb_packet_maxlen, fifo->intervall,
+ (usb_complete_t)tx_iso_complete, urb->context);
+ memset(context_iso_urb->buffer, 0,
+ sizeof(context_iso_urb->buffer));
+ frame_complete = 0;
+
+ for (k = 0; k < num_isoc_packets; ++k) {
+ /* analyze tx success of previous ISO packets */
+ if (debug & DBG_HFC_URB_ERROR) {
+ errcode = urb->iso_frame_desc[k].status;
+ if (errcode) {
+ printk(KERN_DEBUG "%s: %s: "
+ "ISO packet %i, status: %i\n",
+ hw->name, __func__, k, errcode);
+ }
+ }
+
+ /* Generate next ISO Packets */
+ if (tx_skb)
+ remain = tx_skb->len - *tx_idx;
+ else if (fillempty)
+ remain = 15; /* > not complete */
+ else
+ remain = 0;
+
+ if (remain > 0) {
+ fifo->bit_line -= sink;
+ current_len = (0 - fifo->bit_line) / 8;
+ if (current_len > 14)
+ current_len = 14;
+ if (current_len < 0)
+ current_len = 0;
+ if (remain < current_len)
+ current_len = remain;
+
+ /* how much bit do we put on the line? */
+ fifo->bit_line += current_len * 8;
+
+ context_iso_urb->buffer[tx_offset] = 0;
+ if (current_len == remain) {
+ if (hdlc) {
+ /* signal frame completion */
+ context_iso_urb->
+ buffer[tx_offset] = 1;
+ /* add 2 byte flags and 16bit
+ * CRC at end of ISDN frame */
+ fifo->bit_line += 32;
+ }
+ frame_complete = 1;
+ }
+
+ /* copy tx data to iso-urb buffer */
+ p = context_iso_urb->buffer + tx_offset + 1;
+ if (fillempty) {
+ memset(p, fifo->bch->fill[0],
+ current_len);
+ } else {
+ memcpy(p, (tx_skb->data + *tx_idx),
+ current_len);
+ *tx_idx += current_len;
+ }
+ urb->iso_frame_desc[k].offset = tx_offset;
+ urb->iso_frame_desc[k].length = current_len + 1;
+
+ /* USB data log for every D ISO out */
+ if ((fifon == HFCUSB_D_RX) && !fillempty &&
+ (debug & DBG_HFC_USB_VERBOSE)) {
+ printk(KERN_DEBUG
+ "%s: %s (%d/%d) offs(%d) len(%d) ",
+ hw->name, __func__,
+ k, num_isoc_packets - 1,
+ urb->iso_frame_desc[k].offset,
+ urb->iso_frame_desc[k].length);
+
+ for (i = urb->iso_frame_desc[k].offset;
+ i < (urb->iso_frame_desc[k].offset
+ + urb->iso_frame_desc[k].length);
+ i++)
+ printk("%x ",
+ context_iso_urb->buffer[i]);
+
+ printk(" skb->len(%i) tx-idx(%d)\n",
+ tx_skb->len, *tx_idx);
+ }
+
+ tx_offset += (current_len + 1);
+ } else {
+ urb->iso_frame_desc[k].offset = tx_offset++;
+ urb->iso_frame_desc[k].length = 1;
+ /* we lower data margin every msec */
+ fifo->bit_line -= sink;
+ if (fifo->bit_line < BITLINE_INF)
+ fifo->bit_line = BITLINE_INF;
+ }
+
+ if (frame_complete) {
+ frame_complete = 0;
+
+ if (debug & DBG_HFC_FIFO_VERBOSE) {
+ printk(KERN_DEBUG "%s: %s: "
+ "fifon(%i) new TX len(%i): ",
+ hw->name, __func__,
+ fifon, tx_skb->len);
+ i = 0;
+ while (i < tx_skb->len)
+ printk("%02x ",
+ tx_skb->data[i++]);
+ printk("\n");
+ }
+
+ dev_consume_skb_irq(tx_skb);
+ tx_skb = NULL;
+ if (fifo->dch && get_next_dframe(fifo->dch))
+ tx_skb = fifo->dch->tx_skb;
+ else if (fifo->bch &&
+ get_next_bframe(fifo->bch))
+ tx_skb = fifo->bch->tx_skb;
+ }
+ }
+ errcode = usb_submit_urb(urb, GFP_ATOMIC);
+ if (errcode < 0) {
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG
+ "%s: %s: error submitting ISO URB: %d \n",
+ hw->name, __func__, errcode);
+ }
+
+ /*
+ * abuse DChannel tx iso completion to trigger NT mode state
+ * changes tx_iso_complete is assumed to be called every
+ * fifo->intervall (ms)
+ */
+ if ((fifon == HFCUSB_D_TX) && (hw->protocol == ISDN_P_NT_S0)
+ && (hw->timers & NT_ACTIVATION_TIMER)) {
+ if ((--hw->nt_timer) < 0)
+ schedule_event(&hw->dch, FLG_PHCHANGE);
+ }
+
+ } else {
+ if (status && (debug & DBG_HFC_URB_ERROR))
+ printk(KERN_DEBUG "%s: %s: urb->status %s (%i)"
+ "fifonum=%d\n",
+ hw->name, __func__,
+ symbolic(urb_errlist, status), status, fifon);
+ }
+ spin_unlock_irqrestore(&hw->lock, flags);
+}
+
+/*
+ * allocs urbs and start isoc transfer with two pending urbs to avoid
+ * gaps in the transfer chain
+ */
+static int
+start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb,
+ usb_complete_t complete, int packet_size)
+{
+ struct hfcsusb *hw = fifo->hw;
+ int i, k, errcode;
+
+ if (debug)
+ printk(KERN_DEBUG "%s: %s: fifo %i\n",
+ hw->name, __func__, fifo->fifonum);
+
+ /* allocate Memory for Iso out Urbs */
+ for (i = 0; i < 2; i++) {
+ if (!(fifo->iso[i].urb)) {
+ fifo->iso[i].urb =
+ usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
+ if (!(fifo->iso[i].urb)) {
+ printk(KERN_DEBUG
+ "%s: %s: alloc urb for fifo %i failed",
+ hw->name, __func__, fifo->fifonum);
+ continue;
+ }
+ fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
+ fifo->iso[i].indx = i;
+
+ /* Init the first iso */
+ if (ISO_BUFFER_SIZE >=
+ (fifo->usb_packet_maxlen *
+ num_packets_per_urb)) {
+ fill_isoc_urb(fifo->iso[i].urb,
+ fifo->hw->dev, fifo->pipe,
+ fifo->iso[i].buffer,
+ num_packets_per_urb,
+ fifo->usb_packet_maxlen,
+ fifo->intervall, complete,
+ &fifo->iso[i]);
+ memset(fifo->iso[i].buffer, 0,
+ sizeof(fifo->iso[i].buffer));
+
+ for (k = 0; k < num_packets_per_urb; k++) {
+ fifo->iso[i].urb->
+ iso_frame_desc[k].offset =
+ k * packet_size;
+ fifo->iso[i].urb->
+ iso_frame_desc[k].length =
+ packet_size;
+ }
+ } else {
+ printk(KERN_DEBUG
+ "%s: %s: ISO Buffer size to small!\n",
+ hw->name, __func__);
+ }
+ }
+ fifo->bit_line = BITLINE_INF;
+
+ errcode = usb_submit_urb(fifo->iso[i].urb, GFP_KERNEL);
+ fifo->active = (errcode >= 0) ? 1 : 0;
+ fifo->stop_gracefull = 0;
+ if (errcode < 0) {
+ printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n",
+ hw->name, __func__,
+ symbolic(urb_errlist, errcode), i);
+ }
+ }
+ return fifo->active;
+}
+
+static void
+stop_iso_gracefull(struct usb_fifo *fifo)
+{
+ struct hfcsusb *hw = fifo->hw;
+ int i, timeout;
+ u_long flags;
+
+ for (i = 0; i < 2; i++) {
+ spin_lock_irqsave(&hw->lock, flags);
+ if (debug)
+ printk(KERN_DEBUG "%s: %s for fifo %i.%i\n",
+ hw->name, __func__, fifo->fifonum, i);
+ fifo->stop_gracefull = 1;
+ spin_unlock_irqrestore(&hw->lock, flags);
+ }
+
+ for (i = 0; i < 2; i++) {
+ timeout = 3;
+ while (fifo->stop_gracefull && timeout--)
+ schedule_timeout_interruptible((HZ / 1000) * 16);
+ if (debug && fifo->stop_gracefull)
+ printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n",
+ hw->name, __func__, fifo->fifonum, i);
+ }
+}
+
+static void
+stop_int_gracefull(struct usb_fifo *fifo)
+{
+ struct hfcsusb *hw = fifo->hw;
+ int timeout;
+ u_long flags;
+
+ spin_lock_irqsave(&hw->lock, flags);
+ if (debug)
+ printk(KERN_DEBUG "%s: %s for fifo %i\n",
+ hw->name, __func__, fifo->fifonum);
+ fifo->stop_gracefull = 1;
+ spin_unlock_irqrestore(&hw->lock, flags);
+
+ timeout = 3;
+ while (fifo->stop_gracefull && timeout--)
+ schedule_timeout_interruptible((HZ / 1000) * 3);
+ if (debug && fifo->stop_gracefull)
+ printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n",
+ hw->name, __func__, fifo->fifonum);
+}
+
+/* start the interrupt transfer for the given fifo */
+static void
+start_int_fifo(struct usb_fifo *fifo)
+{
+ struct hfcsusb *hw = fifo->hw;
+ int errcode;
+
+ if (debug)
+ printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n",
+ hw->name, __func__, fifo->fifonum);
+
+ if (!fifo->urb) {
+ fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!fifo->urb)
+ return;
+ }
+ usb_fill_int_urb(fifo->urb, fifo->hw->dev, fifo->pipe,
+ fifo->buffer, fifo->usb_packet_maxlen,
+ (usb_complete_t)rx_int_complete, fifo, fifo->intervall);
+ fifo->active = 1;
+ fifo->stop_gracefull = 0;
+ errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
+ if (errcode) {
+ printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n",
+ hw->name, __func__, errcode);
+ fifo->active = 0;
+ }
+}
+
+static void
+setPortMode(struct hfcsusb *hw)
+{
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s %s\n", hw->name, __func__,
+ (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT");
+
+ if (hw->protocol == ISDN_P_TE_S0) {
+ write_reg(hw, HFCUSB_SCTRL, 0x40);
+ write_reg(hw, HFCUSB_SCTRL_E, 0x00);
+ write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE);
+ write_reg(hw, HFCUSB_STATES, 3 | 0x10);
+ write_reg(hw, HFCUSB_STATES, 3);
+ } else {
+ write_reg(hw, HFCUSB_SCTRL, 0x44);
+ write_reg(hw, HFCUSB_SCTRL_E, 0x09);
+ write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT);
+ write_reg(hw, HFCUSB_STATES, 1 | 0x10);
+ write_reg(hw, HFCUSB_STATES, 1);
+ }
+}
+
+static void
+reset_hfcsusb(struct hfcsusb *hw)
+{
+ struct usb_fifo *fifo;
+ int i;
+
+ if (debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
+
+ /* do Chip reset */
+ write_reg(hw, HFCUSB_CIRM, 8);
+
+ /* aux = output, reset off */
+ write_reg(hw, HFCUSB_CIRM, 0x10);
+
+ /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */
+ write_reg(hw, HFCUSB_USB_SIZE, (hw->packet_size / 8) |
+ ((hw->packet_size / 8) << 4));
+
+ /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */
+ write_reg(hw, HFCUSB_USB_SIZE_I, hw->iso_packet_size);
+
+ /* enable PCM/GCI master mode */
+ write_reg(hw, HFCUSB_MST_MODE1, 0); /* set default values */
+ write_reg(hw, HFCUSB_MST_MODE0, 1); /* enable master mode */
+
+ /* init the fifos */
+ write_reg(hw, HFCUSB_F_THRES,
+ (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
+
+ fifo = hw->fifos;
+ for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
+ write_reg(hw, HFCUSB_FIFO, i); /* select the desired fifo */
+ fifo[i].max_size =
+ (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
+ fifo[i].last_urblen = 0;
+
+ /* set 2 bit for D- & E-channel */
+ write_reg(hw, HFCUSB_HDLC_PAR, ((i <= HFCUSB_B2_RX) ? 0 : 2));
+
+ /* enable all fifos */
+ if (i == HFCUSB_D_TX)
+ write_reg(hw, HFCUSB_CON_HDLC,
+ (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09);
+ else
+ write_reg(hw, HFCUSB_CON_HDLC, 0x08);
+ write_reg(hw, HFCUSB_INC_RES_F, 2); /* reset the fifo */
+ }
+
+ write_reg(hw, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
+ handle_led(hw, LED_POWER_ON);
+}
+
+/* start USB data pipes dependand on device's endpoint configuration */
+static void
+hfcsusb_start_endpoint(struct hfcsusb *hw, int channel)
+{
+ /* quick check if endpoint already running */
+ if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active))
+ return;
+ if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active))
+ return;
+ if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active))
+ return;
+ if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active))
+ return;
+
+ /* start rx endpoints using USB INT IN method */
+ if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
+ start_int_fifo(hw->fifos + channel * 2 + 1);
+
+ /* start rx endpoints using USB ISO IN method */
+ if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) {
+ switch (channel) {
+ case HFC_CHAN_D:
+ start_isoc_chain(hw->fifos + HFCUSB_D_RX,
+ ISOC_PACKETS_D,
+ (usb_complete_t)rx_iso_complete,
+ 16);
+ break;
+ case HFC_CHAN_E:
+ start_isoc_chain(hw->fifos + HFCUSB_PCM_RX,
+ ISOC_PACKETS_D,
+ (usb_complete_t)rx_iso_complete,
+ 16);
+ break;
+ case HFC_CHAN_B1:
+ start_isoc_chain(hw->fifos + HFCUSB_B1_RX,
+ ISOC_PACKETS_B,
+ (usb_complete_t)rx_iso_complete,
+ 16);
+ break;
+ case HFC_CHAN_B2:
+ start_isoc_chain(hw->fifos + HFCUSB_B2_RX,
+ ISOC_PACKETS_B,
+ (usb_complete_t)rx_iso_complete,
+ 16);
+ break;
+ }
+ }
+
+ /* start tx endpoints using USB ISO OUT method */
+ switch (channel) {
+ case HFC_CHAN_D:
+ start_isoc_chain(hw->fifos + HFCUSB_D_TX,
+ ISOC_PACKETS_B,
+ (usb_complete_t)tx_iso_complete, 1);
+ break;
+ case HFC_CHAN_B1:
+ start_isoc_chain(hw->fifos + HFCUSB_B1_TX,
+ ISOC_PACKETS_D,
+ (usb_complete_t)tx_iso_complete, 1);
+ break;
+ case HFC_CHAN_B2:
+ start_isoc_chain(hw->fifos + HFCUSB_B2_TX,
+ ISOC_PACKETS_B,
+ (usb_complete_t)tx_iso_complete, 1);
+ break;
+ }
+}
+
+/* stop USB data pipes dependand on device's endpoint configuration */
+static void
+hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel)
+{
+ /* quick check if endpoint currently running */
+ if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active))
+ return;
+ if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active))
+ return;
+ if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active))
+ return;
+ if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active))
+ return;
+
+ /* rx endpoints using USB INT IN method */
+ if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
+ stop_int_gracefull(hw->fifos + channel * 2 + 1);
+
+ /* rx endpoints using USB ISO IN method */
+ if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO)
+ stop_iso_gracefull(hw->fifos + channel * 2 + 1);
+
+ /* tx endpoints using USB ISO OUT method */
+ if (channel != HFC_CHAN_E)
+ stop_iso_gracefull(hw->fifos + channel * 2);
+}
+
+
+/* Hardware Initialization */
+static int
+setup_hfcsusb(struct hfcsusb *hw)
+{
+ void *dmabuf = kmalloc(sizeof(u_char), GFP_KERNEL);
+ u_char b;
+ int ret;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
+
+ if (!dmabuf)
+ return -ENOMEM;
+
+ ret = read_reg_atomic(hw, HFCUSB_CHIP_ID, dmabuf);
+
+ memcpy(&b, dmabuf, sizeof(u_char));
+ kfree(dmabuf);
+
+ /* check the chip id */
+ if (ret != 1) {
+ printk(KERN_DEBUG "%s: %s: cannot read chip id\n",
+ hw->name, __func__);
+ return 1;
+ }
+ if (b != HFCUSB_CHIPID) {
+ printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n",
+ hw->name, __func__, b);
+ return 1;
+ }
+
+ /* first set the needed config, interface and alternate */
+ (void) usb_set_interface(hw->dev, hw->if_used, hw->alt_used);
+
+ hw->led_state = 0;
+
+ /* init the background machinery for control requests */
+ hw->ctrl_read.bRequestType = 0xc0;
+ hw->ctrl_read.bRequest = 1;
+ hw->ctrl_read.wLength = cpu_to_le16(1);
+ hw->ctrl_write.bRequestType = 0x40;
+ hw->ctrl_write.bRequest = 0;
+ hw->ctrl_write.wLength = 0;
+ usb_fill_control_urb(hw->ctrl_urb, hw->dev, hw->ctrl_out_pipe,
+ (u_char *)&hw->ctrl_write, NULL, 0,
+ (usb_complete_t)ctrl_complete, hw);
+
+ reset_hfcsusb(hw);
+ return 0;
+}
+
+static void
+release_hw(struct hfcsusb *hw)
+{
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
+
+ /*
+ * stop all endpoints gracefully
+ * TODO: mISDN_core should generate CLOSE_CHANNEL
+ * signals after calling mISDN_unregister_device()
+ */
+ hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
+ hfcsusb_stop_endpoint(hw, HFC_CHAN_B1);
+ hfcsusb_stop_endpoint(hw, HFC_CHAN_B2);
+ if (hw->fifos[HFCUSB_PCM_RX].pipe)
+ hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
+ if (hw->protocol == ISDN_P_TE_S0)
+ l1_event(hw->dch.l1, CLOSE_CHANNEL);
+
+ mISDN_unregister_device(&hw->dch.dev);
+ mISDN_freebchannel(&hw->bch[1]);
+ mISDN_freebchannel(&hw->bch[0]);
+ mISDN_freedchannel(&hw->dch);
+
+ if (hw->ctrl_urb) {
+ usb_kill_urb(hw->ctrl_urb);
+ usb_free_urb(hw->ctrl_urb);
+ hw->ctrl_urb = NULL;
+ }
+
+ if (hw->intf)
+ usb_set_intfdata(hw->intf, NULL);
+ list_del(&hw->list);
+ kfree(hw);
+ hw = NULL;
+}
+
+static void
+deactivate_bchannel(struct bchannel *bch)
+{
+ struct hfcsusb *hw = bch->hw;
+ u_long flags;
+
+ if (bch->debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n",
+ hw->name, __func__, bch->nr);
+
+ spin_lock_irqsave(&hw->lock, flags);
+ mISDN_clear_bchannel(bch);
+ spin_unlock_irqrestore(&hw->lock, flags);
+ hfcsusb_setup_bch(bch, ISDN_P_NONE);
+ hfcsusb_stop_endpoint(hw, bch->nr - 1);
+}
+
+/*
+ * Layer 1 B-channel hardware access
+ */
+static int
+hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
+{
+ struct bchannel *bch = container_of(ch, struct bchannel, ch);
+ int ret = -EINVAL;
+
+ if (bch->debug & DEBUG_HW)
+ printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg);
+
+ switch (cmd) {
+ case HW_TESTRX_RAW:
+ case HW_TESTRX_HDLC:
+ case HW_TESTRX_OFF:
+ ret = -EINVAL;
+ break;
+
+ case CLOSE_CHANNEL:
+ test_and_clear_bit(FLG_OPEN, &bch->Flags);
+ deactivate_bchannel(bch);
+ ch->protocol = ISDN_P_NONE;
+ ch->peer = NULL;
+ module_put(THIS_MODULE);
+ ret = 0;
+ break;
+ case CONTROL_CHANNEL:
+ ret = channel_bctrl(bch, arg);
+ break;
+ default:
+ printk(KERN_WARNING "%s: unknown prim(%x)\n",
+ __func__, cmd);
+ }
+ return ret;
+}
+
+static int
+setup_instance(struct hfcsusb *hw, struct device *parent)
+{
+ u_long flags;
+ int err, i;
+
+ if (debug & DBG_HFC_CALL_TRACE)
+ printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
+
+ spin_lock_init(&hw->ctrl_lock);
+ spin_lock_init(&hw->lock);
+
+ mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state);
+ hw->dch.debug = debug & 0xFFFF;
+ hw->dch.hw = hw;
+ hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0);
+ hw->dch.dev.D.send = hfcusb_l2l1D;
+ hw->dch.dev.D.ctrl = hfc_dctrl;
+
+ /* enable E-Channel logging */
+ if (hw->fifos[HFCUSB_PCM_RX].pipe)
+ mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL);
+
+ hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
+ (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
+ hw->dch.dev.nrbchan = 2;
+ for (i = 0; i < 2; i++) {
+ hw->bch[i].nr = i + 1;
+ set_channelmap(i + 1, hw->dch.dev.channelmap);
+ hw->bch[i].debug = debug;
+ mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1);
+ hw->bch[i].hw = hw;
+ hw->bch[i].ch.send = hfcusb_l2l1B;
+ hw->bch[i].ch.ctrl = hfc_bctrl;
+ hw->bch[i].ch.nr = i + 1;
+ list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels);
+ }
+
+ hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0];
+ hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0];
+ hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1];
+ hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1];
+ hw->fifos[HFCUSB_D_TX].dch = &hw->dch;
+ hw->fifos[HFCUSB_D_RX].dch = &hw->dch;
+ hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech;
+ hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech;
+
+ err = setup_hfcsusb(hw);
+ if (err)
+ goto out;
+
+ snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME,
+ hfcsusb_cnt + 1);
+ printk(KERN_INFO "%s: registered as '%s'\n",
+ DRIVER_NAME, hw->name);
+
+ err = mISDN_register_device(&hw->dch.dev, parent, hw->name);
+ if (err)
+ goto out;
+
+ hfcsusb_cnt++;
+ write_lock_irqsave(&HFClock, flags);
+ list_add_tail(&hw->list, &HFClist);
+ write_unlock_irqrestore(&HFClock, flags);
+ return 0;
+
+out:
+ mISDN_freebchannel(&hw->bch[1]);
+ mISDN_freebchannel(&hw->bch[0]);
+ mISDN_freedchannel(&hw->dch);
+ kfree(hw);
+ return err;
+}
+
+static int
+hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct hfcsusb *hw;
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct usb_host_interface *iface = intf->cur_altsetting;
+ struct usb_host_interface *iface_used = NULL;
+ struct usb_host_endpoint *ep;
+ struct hfcsusb_vdata *driver_info;
+ int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx,
+ probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found,
+ ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size,
+ alt_used = 0;
+
+ vend_idx = 0xffff;
+ for (i = 0; hfcsusb_idtab[i].idVendor; i++) {
+ if ((le16_to_cpu(dev->descriptor.idVendor)
+ == hfcsusb_idtab[i].idVendor) &&
+ (le16_to_cpu(dev->descriptor.idProduct)
+ == hfcsusb_idtab[i].idProduct)) {
+ vend_idx = i;
+ continue;
+ }
+ }
+
+ printk(KERN_DEBUG
+ "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n",
+ __func__, ifnum, iface->desc.bAlternateSetting,
+ intf->minor, vend_idx);
+
+ if (vend_idx == 0xffff) {
+ printk(KERN_WARNING
+ "%s: no valid vendor found in USB descriptor\n",
+ __func__);
+ return -EIO;
+ }
+ /* if vendor and product ID is OK, start probing alternate settings */
+ alt_idx = 0;
+ small_match = -1;
+
+ /* default settings */
+ iso_packet_size = 16;
+ packet_size = 64;
+
+ while (alt_idx < intf->num_altsetting) {
+ iface = intf->altsetting + alt_idx;
+ probe_alt_setting = iface->desc.bAlternateSetting;
+ cfg_used = 0;
+
+ while (validconf[cfg_used][0]) {
+ cfg_found = 1;
+ vcf = validconf[cfg_used];
+ ep = iface->endpoint;
+ memcpy(cmptbl, vcf, 16 * sizeof(int));
+
+ /* check for all endpoints in this alternate setting */
+ for (i = 0; i < iface->desc.bNumEndpoints; i++) {
+ ep_addr = ep->desc.bEndpointAddress;
+
+ /* get endpoint base */
+ idx = ((ep_addr & 0x7f) - 1) * 2;
+ if (idx > 15)
+ return -EIO;
+
+ if (ep_addr & 0x80)
+ idx++;
+ attr = ep->desc.bmAttributes;
+
+ if (cmptbl[idx] != EP_NOP) {
+ if (cmptbl[idx] == EP_NUL)
+ cfg_found = 0;
+ if (attr == USB_ENDPOINT_XFER_INT
+ && cmptbl[idx] == EP_INT)
+ cmptbl[idx] = EP_NUL;
+ if (attr == USB_ENDPOINT_XFER_BULK
+ && cmptbl[idx] == EP_BLK)
+ cmptbl[idx] = EP_NUL;
+ if (attr == USB_ENDPOINT_XFER_ISOC
+ && cmptbl[idx] == EP_ISO)
+ cmptbl[idx] = EP_NUL;
+
+ if (attr == USB_ENDPOINT_XFER_INT &&
+ ep->desc.bInterval < vcf[17]) {
+ cfg_found = 0;
+ }
+ }
+ ep++;
+ }
+
+ for (i = 0; i < 16; i++)
+ if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL)
+ cfg_found = 0;
+
+ if (cfg_found) {
+ if (small_match < cfg_used) {
+ small_match = cfg_used;
+ alt_used = probe_alt_setting;
+ iface_used = iface;
+ }
+ }
+ cfg_used++;
+ }
+ alt_idx++;
+ } /* (alt_idx < intf->num_altsetting) */
+
+ /* not found a valid USB Ta Endpoint config */
+ if (small_match == -1)
+ return -EIO;
+
+ iface = iface_used;
+ hw = kzalloc(sizeof(struct hfcsusb), GFP_KERNEL);
+ if (!hw)
+ return -ENOMEM; /* got no mem */
+ snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s", DRIVER_NAME);
+
+ ep = iface->endpoint;
+ vcf = validconf[small_match];
+
+ for (i = 0; i < iface->desc.bNumEndpoints; i++) {
+ struct usb_fifo *f;
+
+ ep_addr = ep->desc.bEndpointAddress;
+ /* get endpoint base */
+ idx = ((ep_addr & 0x7f) - 1) * 2;
+ if (ep_addr & 0x80)
+ idx++;
+ f = &hw->fifos[idx & 7];
+
+ /* init Endpoints */
+ if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) {
+ ep++;
+ continue;
+ }
+ switch (ep->desc.bmAttributes) {
+ case USB_ENDPOINT_XFER_INT:
+ f->pipe = usb_rcvintpipe(dev,
+ ep->desc.bEndpointAddress);
+ f->usb_transfer_mode = USB_INT;
+ packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ if (ep_addr & 0x80)
+ f->pipe = usb_rcvbulkpipe(dev,
+ ep->desc.bEndpointAddress);
+ else
+ f->pipe = usb_sndbulkpipe(dev,
+ ep->desc.bEndpointAddress);
+ f->usb_transfer_mode = USB_BULK;
+ packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (ep_addr & 0x80)
+ f->pipe = usb_rcvisocpipe(dev,
+ ep->desc.bEndpointAddress);
+ else
+ f->pipe = usb_sndisocpipe(dev,
+ ep->desc.bEndpointAddress);
+ f->usb_transfer_mode = USB_ISOC;
+ iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
+ break;
+ default:
+ f->pipe = 0;
+ }
+
+ if (f->pipe) {
+ f->fifonum = idx & 7;
+ f->hw = hw;
+ f->usb_packet_maxlen =
+ le16_to_cpu(ep->desc.wMaxPacketSize);
+ f->intervall = ep->desc.bInterval;
+ }
+ ep++;
+ }
+ hw->dev = dev; /* save device */
+ hw->if_used = ifnum; /* save used interface */
+ hw->alt_used = alt_used; /* and alternate config */
+ hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
+ hw->cfg_used = vcf[16]; /* store used config */
+ hw->vend_idx = vend_idx; /* store found vendor */
+ hw->packet_size = packet_size;
+ hw->iso_packet_size = iso_packet_size;
+
+ /* create the control pipes needed for register access */
+ hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0);
+ hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0);
+
+ driver_info = (struct hfcsusb_vdata *)
+ hfcsusb_idtab[vend_idx].driver_info;
+
+ hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!hw->ctrl_urb) {
+ pr_warn("%s: No memory for control urb\n",
+ driver_info->vend_name);
+ kfree(hw);
+ return -ENOMEM;
+ }
+
+ pr_info("%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n",
+ hw->name, __func__, driver_info->vend_name,
+ conf_str[small_match], ifnum, alt_used);
+
+ if (setup_instance(hw, dev->dev.parent))
+ return -EIO;
+
+ hw->intf = intf;
+ usb_set_intfdata(hw->intf, hw);
+ return 0;
+}
+
+/* function called when an active device is removed */
+static void
+hfcsusb_disconnect(struct usb_interface *intf)
+{
+ struct hfcsusb *hw = usb_get_intfdata(intf);
+ struct hfcsusb *next;
+ int cnt = 0;
+
+ printk(KERN_INFO "%s: device disconnected\n", hw->name);
+
+ handle_led(hw, LED_POWER_OFF);
+ release_hw(hw);
+
+ list_for_each_entry_safe(hw, next, &HFClist, list)
+ cnt++;
+ if (!cnt)
+ hfcsusb_cnt = 0;
+
+ usb_set_intfdata(intf, NULL);
+}
+
+static struct usb_driver hfcsusb_drv = {
+ .name = DRIVER_NAME,
+ .id_table = hfcsusb_idtab,
+ .probe = hfcsusb_probe,
+ .disconnect = hfcsusb_disconnect,
+ .disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(hfcsusb_drv);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 00:06:48 +0000