v4.19.13 snapshot.
diff --git a/drivers/isdn/hisax/hfc_usb.c b/drivers/isdn/hisax/hfc_usb.c
new file mode 100644
index 0000000..1d4cd01
--- /dev/null
+++ b/drivers/isdn/hisax/hfc_usb.c
@@ -0,0 +1,1608 @@
+/*
+ * hfc_usb.c
+ *
+ * $Id: hfc_usb.c,v 2.3.2.24 2007/10/14 08:40:29 mbachem Exp $
+ *
+ * modular HiSax ISDN driver for Colognechip HFC-S USB chip
+ *
+ * Authors : Peter Sprenger (sprenger@moving-bytes.de)
+ * Martin Bachem (m.bachem@gmx.de, info@colognechip.com)
+ *
+ * based on the first hfc_usb driver of
+ * Werner Cornelius (werner@isdn-development.de)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * 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.
+ *
+ * See Version Histroy at the bottom of this file
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel_stat.h>
+#include <linux/usb.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include "hisax.h"
+#include "hisax_if.h"
+#include "hfc_usb.h"
+
+static const char *hfcusb_revision =
+ "$Revision: 2.3.2.24 $ $Date: 2007/10/14 08:40:29 $ ";
+
+/* Hisax debug support
+ * debug flags defined in hfc_usb.h as HFCUSB_DBG_[*]
+ */
+#define __debug_variable hfc_debug
+#include "hisax_debug.h"
+static u_int debug;
+module_param(debug, uint, 0);
+static int hfc_debug;
+
+
+/* private vendor specific data */
+typedef struct {
+ __u8 led_scheme; // led display scheme
+ signed short led_bits[8]; // array of 8 possible LED bitmask settings
+ char *vend_name; // device name
+} hfcsusb_vdata;
+
+/* VID/PID device list */
+static const struct usb_device_id hfcusb_idtab[] = {
+ {
+ USB_DEVICE(0x0959, 0x2bd0),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_OFF, {4, 0, 2, 1},
+ "ISDN USB TA (Cologne Chip HFC-S USB based)"}),
+ },
+ {
+ USB_DEVICE(0x0675, 0x1688),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {1, 2, 0, 0},
+ "DrayTek miniVigor 128 USB ISDN TA"}),
+ },
+ {
+ USB_DEVICE(0x07b0, 0x0007),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {0x80, -64, -32, -16},
+ "Billion tiny USB ISDN TA 128"}),
+ },
+ {
+ USB_DEVICE(0x0742, 0x2008),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {4, 0, 2, 1},
+ "Stollmann USB TA"}),
+ },
+ {
+ USB_DEVICE(0x0742, 0x2009),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {4, 0, 2, 1},
+ "Aceex USB ISDN TA"}),
+ },
+ {
+ USB_DEVICE(0x0742, 0x200A),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {4, 0, 2, 1},
+ "OEM USB ISDN TA"}),
+ },
+ {
+ USB_DEVICE(0x08e3, 0x0301),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {2, 0, 1, 4},
+ "Olitec USB RNIS"}),
+ },
+ {
+ USB_DEVICE(0x07fa, 0x0846),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {0x80, -64, -32, -16},
+ "Bewan Modem RNIS USB"}),
+ },
+ {
+ USB_DEVICE(0x07fa, 0x0847),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {0x80, -64, -32, -16},
+ "Djinn Numeris USB"}),
+ },
+ {
+ USB_DEVICE(0x07b0, 0x0006),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {0x80, -64, -32, -16},
+ "Twister ISDN TA"}),
+ },
+ {
+ USB_DEVICE(0x071d, 0x1005),
+ .driver_info = (unsigned long) &((hfcsusb_vdata)
+ {LED_SCHEME1, {0x02, 0, 0x01, 0x04},
+ "Eicon DIVA USB 4.0"}),
+ },
+ { }
+};
+
+/* structure defining input+output fifos (interrupt/bulk mode) */
+struct usb_fifo; /* forward definition */
+typedef struct iso_urb_struct {
+ struct urb *purb;
+ __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */
+ struct usb_fifo *owner_fifo; /* pointer to owner fifo */
+} iso_urb_struct;
+
+struct hfcusb_data; /* forward definition */
+
+typedef struct usb_fifo {
+ int fifonum; /* fifo index attached to this structure */
+ int active; /* fifo is currently active */
+ struct hfcusb_data *hfc; /* pointer to main structure */
+ int pipe; /* address of endpoint */
+ __u8 usb_packet_maxlen; /* maximum length for usb transfer */
+ unsigned int max_size; /* maximum size of receive/send packet */
+ __u8 intervall; /* interrupt interval */
+ struct sk_buff *skbuff; /* actual used buffer */
+ struct urb *urb; /* transfer structure for usb routines */
+ __u8 buffer[128]; /* buffer incoming/outgoing data */
+ int bit_line; /* how much bits are in the fifo? */
+
+ volatile __u8 usb_transfer_mode; /* switched between ISO and INT */
+ iso_urb_struct iso[2]; /* need two urbs to have one always for pending */
+ struct hisax_if *hif; /* hisax interface */
+ int delete_flg; /* only delete skbuff once */
+ int last_urblen; /* remember length of last packet */
+} usb_fifo;
+
+/* structure holding all data for one device */
+typedef struct hfcusb_data {
+ /* HiSax Interface for loadable Layer1 drivers */
+ struct hisax_d_if d_if; /* see hisax_if.h */
+ struct hisax_b_if b_if[2]; /* see hisax_if.h */
+ int protocol;
+
+ struct usb_device *dev; /* our device */
+ int if_used; /* used interface number */
+ int alt_used; /* used alternate config */
+ int ctrl_paksize; /* control pipe packet size */
+ int ctrl_in_pipe, /* handles for control pipe */
+ ctrl_out_pipe;
+ int cfg_used; /* configuration index used */
+ int vend_idx; /* vendor found */
+ int b_mode[2]; /* B-channel mode */
+ int l1_activated; /* layer 1 activated */
+ int disc_flag; /* TRUE if device was disonnected to avoid some USB actions */
+ int packet_size, iso_packet_size;
+
+ /* control pipe background handling */
+ ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */
+ volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */
+ struct urb *ctrl_urb; /* transfer structure for control channel */
+
+ struct usb_ctrlrequest ctrl_write; /* buffer for control write request */
+ struct usb_ctrlrequest ctrl_read; /* same for read request */
+
+ __u8 old_led_state, led_state;
+
+ volatile __u8 threshold_mask; /* threshold actually reported */
+ volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */
+
+ usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */
+
+ volatile __u8 l1_state; /* actual l1 state */
+ struct timer_list t3_timer; /* timer 3 for activation/deactivation */
+ struct timer_list t4_timer; /* timer 4 for activation/deactivation */
+} hfcusb_data;
+
+
+static void collect_rx_frame(usb_fifo *fifo, __u8 *data, int len,
+ int finish);
+
+static inline const char *
+symbolic(struct hfcusb_symbolic_list list[], const int num)
+{
+ int i;
+ for (i = 0; list[i].name != NULL; i++)
+ if (list[i].num == num)
+ return (list[i].name);
+ return "<unknown ERROR>";
+}
+
+static void
+ctrl_start_transfer(hfcusb_data *hfc)
+{
+ if (hfc->ctrl_cnt) {
+ hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe;
+ hfc->ctrl_urb->setup_packet = (u_char *)&hfc->ctrl_write;
+ hfc->ctrl_urb->transfer_buffer = NULL;
+ hfc->ctrl_urb->transfer_buffer_length = 0;
+ hfc->ctrl_write.wIndex =
+ cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg);
+ hfc->ctrl_write.wValue =
+ cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val);
+
+ usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */
+ }
+} /* ctrl_start_transfer */
+
+static int
+queue_control_request(hfcusb_data *hfc, __u8 reg, __u8 val, int action)
+{
+ ctrl_buft *buf;
+
+ if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE)
+ return (1); /* no space left */
+ buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */
+ buf->hfc_reg = reg;
+ buf->reg_val = val;
+ buf->action = action;
+ if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
+ hfc->ctrl_in_idx = 0; /* pointer wrap */
+ if (++hfc->ctrl_cnt == 1)
+ ctrl_start_transfer(hfc);
+ return (0);
+}
+
+static void
+ctrl_complete(struct urb *urb)
+{
+ hfcusb_data *hfc = (hfcusb_data *) urb->context;
+
+ urb->dev = hfc->dev;
+ if (hfc->ctrl_cnt) {
+ hfc->ctrl_cnt--; /* decrement actual count */
+ if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
+ hfc->ctrl_out_idx = 0; /* pointer wrap */
+
+ ctrl_start_transfer(hfc); /* start next transfer */
+ }
+}
+
+/* write led data to auxport & invert if necessary */
+static void
+write_led(hfcusb_data *hfc, __u8 led_state)
+{
+ if (led_state != hfc->old_led_state) {
+ hfc->old_led_state = led_state;
+ queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1);
+ }
+}
+
+static void
+set_led_bit(hfcusb_data *hfc, signed short led_bits, int on)
+{
+ if (on) {
+ if (led_bits < 0)
+ hfc->led_state &= ~abs(led_bits);
+ else
+ hfc->led_state |= led_bits;
+ } else {
+ if (led_bits < 0)
+ hfc->led_state |= abs(led_bits);
+ else
+ hfc->led_state &= ~led_bits;
+ }
+}
+
+/* handle LED requests */
+static void
+handle_led(hfcusb_data *hfc, int event)
+{
+ hfcsusb_vdata *driver_info =
+ (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info;
+
+ /* if no scheme -> no LED action */
+ if (driver_info->led_scheme == LED_OFF)
+ return;
+
+ switch (event) {
+ case LED_POWER_ON:
+ set_led_bit(hfc, driver_info->led_bits[0], 1);
+ set_led_bit(hfc, driver_info->led_bits[1], 0);
+ set_led_bit(hfc, driver_info->led_bits[2], 0);
+ set_led_bit(hfc, driver_info->led_bits[3], 0);
+ break;
+ case LED_POWER_OFF:
+ set_led_bit(hfc, driver_info->led_bits[0], 0);
+ set_led_bit(hfc, driver_info->led_bits[1], 0);
+ set_led_bit(hfc, driver_info->led_bits[2], 0);
+ set_led_bit(hfc, driver_info->led_bits[3], 0);
+ break;
+ case LED_S0_ON:
+ set_led_bit(hfc, driver_info->led_bits[1], 1);
+ break;
+ case LED_S0_OFF:
+ set_led_bit(hfc, driver_info->led_bits[1], 0);
+ break;
+ case LED_B1_ON:
+ set_led_bit(hfc, driver_info->led_bits[2], 1);
+ break;
+ case LED_B1_OFF:
+ set_led_bit(hfc, driver_info->led_bits[2], 0);
+ break;
+ case LED_B2_ON:
+ set_led_bit(hfc, driver_info->led_bits[3], 1);
+ break;
+ case LED_B2_OFF:
+ set_led_bit(hfc, driver_info->led_bits[3], 0);
+ break;
+ }
+ write_led(hfc, hfc->led_state);
+}
+
+/* ISDN l1 timer T3 expires */
+static void
+l1_timer_expire_t3(struct timer_list *t)
+{
+ hfcusb_data *hfc = from_timer(hfc, t, t3_timer);
+ hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
+ NULL);
+
+ DBG(HFCUSB_DBG_STATES,
+ "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)");
+
+ hfc->l1_activated = 0;
+ handle_led(hfc, LED_S0_OFF);
+ /* deactivate : */
+ queue_control_request(hfc, HFCUSB_STATES, 0x10, 1);
+ queue_control_request(hfc, HFCUSB_STATES, 3, 1);
+}
+
+/* ISDN l1 timer T4 expires */
+static void
+l1_timer_expire_t4(struct timer_list *t)
+{
+ hfcusb_data *hfc = from_timer(hfc, t, t4_timer);
+ hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
+ NULL);
+
+ DBG(HFCUSB_DBG_STATES,
+ "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)");
+
+ hfc->l1_activated = 0;
+ handle_led(hfc, LED_S0_OFF);
+}
+
+/* S0 state changed */
+static void
+s0_state_handler(hfcusb_data *hfc, __u8 state)
+{
+ __u8 old_state;
+
+ old_state = hfc->l1_state;
+ if (state == old_state || state < 1 || state > 8)
+ return;
+
+ DBG(HFCUSB_DBG_STATES, "HFC-S USB: S0 statechange(%d -> %d)",
+ old_state, state);
+
+ if (state < 4 || state == 7 || state == 8) {
+ if (timer_pending(&hfc->t3_timer))
+ del_timer(&hfc->t3_timer);
+ DBG(HFCUSB_DBG_STATES, "HFC-S USB: T3 deactivated");
+ }
+ if (state >= 7) {
+ if (timer_pending(&hfc->t4_timer))
+ del_timer(&hfc->t4_timer);
+ DBG(HFCUSB_DBG_STATES, "HFC-S USB: T4 deactivated");
+ }
+
+ if (state == 7 && !hfc->l1_activated) {
+ hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
+ PH_ACTIVATE | INDICATION, NULL);
+ DBG(HFCUSB_DBG_STATES, "HFC-S USB: PH_ACTIVATE | INDICATION sent");
+ hfc->l1_activated = 1;
+ handle_led(hfc, LED_S0_ON);
+ } else if (state <= 3 /* && activated */) {
+ if (old_state == 7 || old_state == 8) {
+ DBG(HFCUSB_DBG_STATES, "HFC-S USB: T4 activated");
+ if (!timer_pending(&hfc->t4_timer)) {
+ hfc->t4_timer.expires =
+ jiffies + (HFC_TIMER_T4 * HZ) / 1000;
+ add_timer(&hfc->t4_timer);
+ }
+ } else {
+ hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
+ PH_DEACTIVATE | INDICATION,
+ NULL);
+ DBG(HFCUSB_DBG_STATES,
+ "HFC-S USB: PH_DEACTIVATE | INDICATION sent");
+ hfc->l1_activated = 0;
+ handle_led(hfc, LED_S0_OFF);
+ }
+ }
+ hfc->l1_state = state;
+}
+
+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_int_urb(urb, dev, pipe, buf, packet_size * num_packets,
+ complete, context, interval);
+
+ urb->number_of_packets = num_packets;
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->actual_length = 0;
+ 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;
+ }
+}
+
+/* allocs urbs and start isoc transfer with two pending urbs to avoid
+ * gaps in the transfer chain
+ */
+static int
+start_isoc_chain(usb_fifo *fifo, int num_packets_per_urb,
+ usb_complete_t complete, int packet_size)
+{
+ int i, k, errcode;
+
+ DBG(HFCUSB_DBG_INIT, "HFC-S USB: starting ISO-URBs for fifo:%d\n",
+ fifo->fifonum);
+
+ /* allocate Memory for Iso out Urbs */
+ for (i = 0; i < 2; i++) {
+ if (!(fifo->iso[i].purb)) {
+ fifo->iso[i].purb =
+ usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
+ if (!(fifo->iso[i].purb)) {
+ printk(KERN_INFO
+ "alloc urb for fifo %i failed!!!",
+ fifo->fifonum);
+ }
+ fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
+
+ /* Init the first iso */
+ if (ISO_BUFFER_SIZE >=
+ (fifo->usb_packet_maxlen *
+ num_packets_per_urb)) {
+ fill_isoc_urb(fifo->iso[i].purb,
+ fifo->hfc->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));
+ /* defining packet delimeters in fifo->buffer */
+ for (k = 0; k < num_packets_per_urb; k++) {
+ fifo->iso[i].purb->
+ iso_frame_desc[k].offset =
+ k * packet_size;
+ fifo->iso[i].purb->
+ iso_frame_desc[k].length =
+ packet_size;
+ }
+ } else {
+ printk(KERN_INFO
+ "HFC-S USB: ISO Buffer size to small!\n");
+ }
+ }
+ fifo->bit_line = BITLINE_INF;
+
+ errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL);
+ fifo->active = (errcode >= 0) ? 1 : 0;
+ if (errcode < 0)
+ printk(KERN_INFO "HFC-S USB: usb_submit_urb URB nr:%d, error(%i): '%s'\n",
+ i, errcode, symbolic(urb_errlist, errcode));
+ }
+ return (fifo->active);
+}
+
+/* stops running iso chain and frees their pending urbs */
+static void
+stop_isoc_chain(usb_fifo *fifo)
+{
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ if (fifo->iso[i].purb) {
+ DBG(HFCUSB_DBG_INIT,
+ "HFC-S USB: Stopping iso chain for fifo %i.%i",
+ fifo->fifonum, i);
+ usb_kill_urb(fifo->iso[i].purb);
+ usb_free_urb(fifo->iso[i].purb);
+ fifo->iso[i].purb = NULL;
+ }
+ }
+
+ usb_kill_urb(fifo->urb);
+ usb_free_urb(fifo->urb);
+ fifo->urb = NULL;
+ fifo->active = 0;
+}
+
+/* defines how much ISO packets are handled in one URB */
+static int iso_packets[8] =
+{ ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
+ ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
+};
+
+static void
+tx_iso_complete(struct urb *urb)
+{
+ iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
+ usb_fifo *fifo = context_iso_urb->owner_fifo;
+ hfcusb_data *hfc = fifo->hfc;
+ int k, tx_offset, num_isoc_packets, sink, len, current_len,
+ errcode;
+ int frame_complete, transp_mode, fifon, status;
+ __u8 threshbit;
+
+ fifon = fifo->fifonum;
+ status = urb->status;
+
+ tx_offset = 0;
+
+ /* ISO transfer only partially completed,
+ look at individual frame status for details */
+ if (status == -EXDEV) {
+ DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: tx_iso_complete with -EXDEV"
+ ", urb->status %d, fifonum %d\n",
+ status, fifon);
+
+ for (k = 0; k < iso_packets[fifon]; ++k) {
+ errcode = urb->iso_frame_desc[k].status;
+ if (errcode)
+ DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: tx_iso_complete "
+ "packet %i, status: %i\n",
+ k, errcode);
+ }
+
+ // clear status, so go on with ISO transfers
+ status = 0;
+ }
+
+ if (fifo->active && !status) {
+ transp_mode = 0;
+ if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
+ transp_mode = 1;
+
+ /* is FifoFull-threshold set for our channel? */
+ threshbit = (hfc->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->hfc->dev, fifo->pipe,
+ context_iso_urb->buffer, num_isoc_packets,
+ fifo->usb_packet_maxlen, fifo->intervall,
+ tx_iso_complete, urb->context);
+ memset(context_iso_urb->buffer, 0,
+ sizeof(context_iso_urb->buffer));
+ frame_complete = 0;
+
+ /* Generate next ISO Packets */
+ for (k = 0; k < num_isoc_packets; ++k) {
+ if (fifo->skbuff) {
+ len = fifo->skbuff->len;
+ /* we lower data margin every msec */
+ fifo->bit_line -= sink;
+ current_len = (0 - fifo->bit_line) / 8;
+ /* maximum 15 byte for every ISO packet makes our life easier */
+ if (current_len > 14)
+ current_len = 14;
+ current_len =
+ (len <=
+ current_len) ? len : current_len;
+ /* 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 == len) {
+ if (!transp_mode) {
+ /* here 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;
+ }
+
+ memcpy(context_iso_urb->buffer +
+ tx_offset + 1, fifo->skbuff->data,
+ current_len);
+ skb_pull(fifo->skbuff, current_len);
+
+ /* define packet delimeters within the URB buffer */
+ urb->iso_frame_desc[k].offset = tx_offset;
+ urb->iso_frame_desc[k].length =
+ current_len + 1;
+
+ tx_offset += (current_len + 1);
+ } else {
+ urb->iso_frame_desc[k].offset =
+ tx_offset++;
+
+ urb->iso_frame_desc[k].length = 1;
+ fifo->bit_line -= sink; /* we lower data margin every msec */
+
+ if (fifo->bit_line < BITLINE_INF) {
+ fifo->bit_line = BITLINE_INF;
+ }
+ }
+
+ if (frame_complete) {
+ fifo->delete_flg = 1;
+ fifo->hif->l1l2(fifo->hif,
+ PH_DATA | CONFIRM,
+ (void *) (unsigned long) fifo->skbuff->
+ truesize);
+ if (fifo->skbuff && fifo->delete_flg) {
+ dev_kfree_skb_any(fifo->skbuff);
+ fifo->skbuff = NULL;
+ fifo->delete_flg = 0;
+ }
+ frame_complete = 0;
+ }
+ }
+ errcode = usb_submit_urb(urb, GFP_ATOMIC);
+ if (errcode < 0) {
+ printk(KERN_INFO
+ "HFC-S USB: error submitting ISO URB: %d\n",
+ errcode);
+ }
+ } else {
+ if (status && !hfc->disc_flag) {
+ printk(KERN_INFO
+ "HFC-S USB: tx_iso_complete: error(%i): '%s', fifonum=%d\n",
+ status, symbolic(urb_errlist, status), fifon);
+ }
+ }
+}
+
+static void
+rx_iso_complete(struct urb *urb)
+{
+ iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
+ usb_fifo *fifo = context_iso_urb->owner_fifo;
+ hfcusb_data *hfc = fifo->hfc;
+ int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
+ status;
+ unsigned int iso_status;
+ __u8 *buf;
+ static __u8 eof[8];
+
+ fifon = fifo->fifonum;
+ status = urb->status;
+
+ if (urb->status == -EOVERFLOW) {
+ DBG(HFCUSB_DBG_VERBOSE_USB,
+ "HFC-USB: ignoring USB DATAOVERRUN fifo(%i)", fifon);
+ status = 0;
+ }
+
+ /* ISO transfer only partially completed,
+ look at individual frame status for details */
+ if (status == -EXDEV) {
+ DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: rx_iso_complete with -EXDEV "
+ "urb->status %d, fifonum %d\n",
+ status, fifon);
+ status = 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 && !hfc->disc_flag)
+ DBG(HFCUSB_DBG_VERBOSE_USB,
+ "HFC-S USB: rx_iso_complete "
+ "ISO packet %i, status: %i\n",
+ k, iso_status);
+
+ if (fifon == HFCUSB_D_RX) {
+ DBG(HFCUSB_DBG_VERBOSE_USB,
+ "HFC-S USB: ISO-D-RX lst_urblen:%2d "
+ "act_urblen:%2d max-urblen:%2d EOF:0x%0x",
+ fifo->last_urblen, len, maxlen,
+ eof[5]);
+
+ DBG_PACKET(HFCUSB_DBG_VERBOSE_USB, buf, len);
+ }
+
+ if (fifo->last_urblen != maxlen) {
+ /* the threshold mask is in the 2nd status byte */
+ hfc->threshold_mask = buf[1];
+ /* care for L1 state only for D-Channel
+ to avoid overlapped iso completions */
+ if (fifon == HFCUSB_D_RX) {
+ /* the S0 state is in the upper half
+ of the 1st status byte */
+ s0_state_handler(hfc, buf[0] >> 4);
+ }
+ eof[fifon] = buf[0] & 1;
+ if (len > 2)
+ collect_rx_frame(fifo, buf + 2,
+ len - 2,
+ (len < maxlen) ?
+ eof[fifon] : 0);
+ } else {
+ collect_rx_frame(fifo, buf, len,
+ (len <
+ maxlen) ? eof[fifon] :
+ 0);
+ }
+ fifo->last_urblen = len;
+ }
+
+ fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
+ context_iso_urb->buffer, num_isoc_packets,
+ fifo->usb_packet_maxlen, fifo->intervall,
+ rx_iso_complete, urb->context);
+ errcode = usb_submit_urb(urb, GFP_ATOMIC);
+ if (errcode < 0) {
+ printk(KERN_ERR
+ "HFC-S USB: error submitting ISO URB: %d\n",
+ errcode);
+ }
+ } else {
+ if (status && !hfc->disc_flag) {
+ printk(KERN_ERR
+ "HFC-S USB: rx_iso_complete : "
+ "urb->status %d, fifonum %d\n",
+ status, fifon);
+ }
+ }
+}
+
+/* collect rx data from INT- and ISO-URBs */
+static void
+collect_rx_frame(usb_fifo *fifo, __u8 *data, int len, int finish)
+{
+ hfcusb_data *hfc = fifo->hfc;
+ int transp_mode, fifon;
+
+ fifon = fifo->fifonum;
+ transp_mode = 0;
+ if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
+ transp_mode = 1;
+
+ if (!fifo->skbuff) {
+ fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
+ if (!fifo->skbuff) {
+ printk(KERN_ERR
+ "HFC-S USB: cannot allocate buffer for fifo(%d)\n",
+ fifon);
+ return;
+ }
+ }
+ if (len) {
+ if (fifo->skbuff->len + len < fifo->max_size) {
+ skb_put_data(fifo->skbuff, data, len);
+ } else {
+ DBG(HFCUSB_DBG_FIFO_ERR,
+ "HCF-USB: got frame exceeded fifo->max_size(%d) fifo(%d)",
+ fifo->max_size, fifon);
+ DBG_SKB(HFCUSB_DBG_VERBOSE_USB, fifo->skbuff);
+ skb_trim(fifo->skbuff, 0);
+ }
+ }
+ if (transp_mode && fifo->skbuff->len >= 128) {
+ fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION,
+ fifo->skbuff);
+ fifo->skbuff = NULL;
+ return;
+ }
+ /* we have a complete hdlc packet */
+ if (finish) {
+ if (fifo->skbuff->len > 3 &&
+ !fifo->skbuff->data[fifo->skbuff->len - 1]) {
+
+ if (fifon == HFCUSB_D_RX) {
+ DBG(HFCUSB_DBG_DCHANNEL,
+ "HFC-S USB: D-RX len(%d)", fifo->skbuff->len);
+ DBG_SKB(HFCUSB_DBG_DCHANNEL, fifo->skbuff);
+ }
+
+ /* remove CRC & status */
+ skb_trim(fifo->skbuff, fifo->skbuff->len - 3);
+ if (fifon == HFCUSB_PCM_RX) {
+ fifo->hif->l1l2(fifo->hif,
+ PH_DATA_E | INDICATION,
+ fifo->skbuff);
+ } else
+ fifo->hif->l1l2(fifo->hif,
+ PH_DATA | INDICATION,
+ fifo->skbuff);
+ fifo->skbuff = NULL; /* buffer was freed from upper layer */
+ } else {
+ DBG(HFCUSB_DBG_FIFO_ERR,
+ "HFC-S USB: ERROR frame len(%d) fifo(%d)",
+ fifo->skbuff->len, fifon);
+ DBG_SKB(HFCUSB_DBG_VERBOSE_USB, fifo->skbuff);
+ skb_trim(fifo->skbuff, 0);
+ }
+ }
+}
+
+static void
+rx_int_complete(struct urb *urb)
+{
+ int len;
+ int status;
+ __u8 *buf, maxlen, fifon;
+ usb_fifo *fifo = (usb_fifo *) urb->context;
+ hfcusb_data *hfc = fifo->hfc;
+ static __u8 eof[8];
+
+ urb->dev = hfc->dev; /* security init */
+
+ fifon = fifo->fifonum;
+ if ((!fifo->active) || (urb->status)) {
+ DBG(HFCUSB_DBG_INIT, "HFC-S USB: RX-Fifo %i is going down (%i)",
+ fifon, urb->status);
+
+ fifo->urb->interval = 0; /* cancel automatic rescheduling */
+ if (fifo->skbuff) {
+ dev_kfree_skb_any(fifo->skbuff);
+ fifo->skbuff = NULL;
+ }
+ return;
+ }
+ len = urb->actual_length;
+ buf = fifo->buffer;
+ maxlen = fifo->usb_packet_maxlen;
+
+ if (fifon == HFCUSB_D_RX) {
+ DBG(HFCUSB_DBG_VERBOSE_USB,
+ "HFC-S USB: INT-D-RX lst_urblen:%2d "
+ "act_urblen:%2d max-urblen:%2d EOF:0x%0x",
+ fifo->last_urblen, len, maxlen,
+ eof[5]);
+ DBG_PACKET(HFCUSB_DBG_VERBOSE_USB, buf, len);
+ }
+
+ if (fifo->last_urblen != fifo->usb_packet_maxlen) {
+ /* the threshold mask is in the 2nd status byte */
+ hfc->threshold_mask = buf[1];
+ /* the S0 state is in the upper half of the 1st status byte */
+ s0_state_handler(hfc, buf[0] >> 4);
+ eof[fifon] = buf[0] & 1;
+ /* if we have more than the 2 status bytes -> collect data */
+ if (len > 2)
+ collect_rx_frame(fifo, buf + 2,
+ urb->actual_length - 2,
+ (len < maxlen) ? eof[fifon] : 0);
+ } else {
+ collect_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) {
+ printk(KERN_INFO
+ "HFC-S USB: %s error resubmitting URB fifo(%d)\n",
+ __func__, fifon);
+ }
+}
+
+/* start initial INT-URB for certain fifo */
+static void
+start_int_fifo(usb_fifo *fifo)
+{
+ int errcode;
+
+ DBG(HFCUSB_DBG_INIT, "HFC-S USB: starting RX INT-URB for fifo:%d\n",
+ fifo->fifonum);
+
+ if (!fifo->urb) {
+ fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!fifo->urb)
+ return;
+ }
+ usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe,
+ fifo->buffer, fifo->usb_packet_maxlen,
+ rx_int_complete, fifo, fifo->intervall);
+ fifo->active = 1; /* must be marked active */
+ errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
+ if (errcode) {
+ printk(KERN_ERR "HFC-S USB: submit URB error(%s): status:%i\n",
+ __func__, errcode);
+ fifo->active = 0;
+ fifo->skbuff = NULL;
+ }
+}
+
+static void
+setup_bchannel(hfcusb_data *hfc, int channel, int mode)
+{
+ __u8 val, idx_table[2] = { 0, 2 };
+
+ if (hfc->disc_flag) {
+ return;
+ }
+ DBG(HFCUSB_DBG_STATES, "HFC-S USB: setting channel %d to mode %d",
+ channel, mode);
+ hfc->b_mode[channel] = mode;
+
+ /* setup CON_HDLC */
+ val = 0;
+ if (mode != L1_MODE_NULL)
+ val = 8; /* enable fifo? */
+ if (mode == L1_MODE_TRANS)
+ val |= 2; /* set transparent bit */
+
+ /* set FIFO to transmit register */
+ queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
+ queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
+ /* reset fifo */
+ queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
+ /* set FIFO to receive register */
+ queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
+ queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
+ /* reset fifo */
+ queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
+
+ val = 0x40;
+ if (hfc->b_mode[0])
+ val |= 1;
+ if (hfc->b_mode[1])
+ val |= 2;
+ queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
+
+ val = 0;
+ if (hfc->b_mode[0])
+ val |= 1;
+ if (hfc->b_mode[1])
+ val |= 2;
+ queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
+
+ if (mode == L1_MODE_NULL) {
+ if (channel)
+ handle_led(hfc, LED_B2_OFF);
+ else
+ handle_led(hfc, LED_B1_OFF);
+ } else {
+ if (channel)
+ handle_led(hfc, LED_B2_ON);
+ else
+ handle_led(hfc, LED_B1_ON);
+ }
+}
+
+static void
+hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
+{
+ usb_fifo *fifo = my_hisax_if->priv;
+ hfcusb_data *hfc = fifo->hfc;
+
+ switch (pr) {
+ case PH_ACTIVATE | REQUEST:
+ if (fifo->fifonum == HFCUSB_D_TX) {
+ DBG(HFCUSB_DBG_STATES,
+ "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
+
+ if (hfc->l1_state != 3
+ && hfc->l1_state != 7) {
+ hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
+ PH_DEACTIVATE |
+ INDICATION,
+ NULL);
+ DBG(HFCUSB_DBG_STATES,
+ "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
+ } else {
+ if (hfc->l1_state == 7) { /* l1 already active */
+ hfc->d_if.ifc.l1l2(&hfc->
+ d_if.
+ ifc,
+ PH_ACTIVATE
+ |
+ INDICATION,
+ NULL);
+ DBG(HFCUSB_DBG_STATES,
+ "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
+ } else {
+ /* force sending sending INFO1 */
+ queue_control_request(hfc,
+ HFCUSB_STATES,
+ 0x14,
+ 1);
+ mdelay(1);
+ /* start l1 activation */
+ queue_control_request(hfc,
+ HFCUSB_STATES,
+ 0x04,
+ 1);
+ if (!timer_pending
+ (&hfc->t3_timer)) {
+ hfc->t3_timer.
+ expires =
+ jiffies +
+ (HFC_TIMER_T3 *
+ HZ) / 1000;
+ add_timer(&hfc->
+ t3_timer);
+ }
+ }
+ }
+ } else {
+ DBG(HFCUSB_DBG_STATES,
+ "HFC_USB: hfc_usb_d_l2l1 B-chan: PH_ACTIVATE | REQUEST");
+ setup_bchannel(hfc,
+ (fifo->fifonum ==
+ HFCUSB_B1_TX) ? 0 : 1,
+ (long) arg);
+ fifo->hif->l1l2(fifo->hif,
+ PH_ACTIVATE | INDICATION,
+ NULL);
+ }
+ break;
+ case PH_DEACTIVATE | REQUEST:
+ if (fifo->fifonum == HFCUSB_D_TX) {
+ DBG(HFCUSB_DBG_STATES,
+ "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
+ } else {
+ DBG(HFCUSB_DBG_STATES,
+ "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
+ setup_bchannel(hfc,
+ (fifo->fifonum ==
+ HFCUSB_B1_TX) ? 0 : 1,
+ (int) L1_MODE_NULL);
+ fifo->hif->l1l2(fifo->hif,
+ PH_DEACTIVATE | INDICATION,
+ NULL);
+ }
+ break;
+ case PH_DATA | REQUEST:
+ if (fifo->skbuff && fifo->delete_flg) {
+ dev_kfree_skb_any(fifo->skbuff);
+ fifo->skbuff = NULL;
+ fifo->delete_flg = 0;
+ }
+ fifo->skbuff = arg; /* we have a new buffer */
+ break;
+ default:
+ DBG(HFCUSB_DBG_STATES,
+ "HFC_USB: hfc_usb_d_l2l1: unknown state : %#x", pr);
+ break;
+ }
+}
+
+/* initial init HFC-S USB chip registers, HiSax interface, USB URBs */
+static int
+hfc_usb_init(hfcusb_data *hfc)
+{
+ usb_fifo *fifo;
+ int i;
+ u_char b;
+ struct hisax_b_if *p_b_if[2];
+
+ /* check the chip id */
+ if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
+ printk(KERN_INFO "HFC-USB: cannot read chip id\n");
+ return (1);
+ }
+ if (b != HFCUSB_CHIPID) {
+ printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
+ return (1);
+ }
+
+ /* first set the needed config, interface and alternate */
+ usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
+
+ /* do Chip reset */
+ write_usb(hfc, HFCUSB_CIRM, 8);
+ /* aux = output, reset off */
+ write_usb(hfc, HFCUSB_CIRM, 0x10);
+
+ /* set USB_SIZE to match wMaxPacketSize for INT or BULK transfers */
+ write_usb(hfc, HFCUSB_USB_SIZE,
+ (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
+
+ /* set USB_SIZE_I to match wMaxPacketSize for ISO transfers */
+ write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
+
+ /* enable PCM/GCI master mode */
+ write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
+ write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
+
+ /* init the fifos */
+ write_usb(hfc, HFCUSB_F_THRES,
+ (HFCUSB_TX_THRESHOLD /
+ 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
+
+ fifo = hfc->fifos;
+ for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
+ write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
+ fifo[i].skbuff = NULL; /* init buffer pointer */
+ 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_usb(hfc, HFCUSB_HDLC_PAR,
+ ((i <= HFCUSB_B2_RX) ? 0 : 2));
+ /* rx hdlc, enable IFF for D-channel */
+ write_usb(hfc, HFCUSB_CON_HDLC,
+ ((i == HFCUSB_D_TX) ? 0x09 : 0x08));
+ write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
+ }
+
+ write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
+ write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
+ write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
+
+ write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
+ write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
+
+ /* set both B-channel to not connected */
+ hfc->b_mode[0] = L1_MODE_NULL;
+ hfc->b_mode[1] = L1_MODE_NULL;
+
+ hfc->l1_activated = 0;
+ hfc->disc_flag = 0;
+ hfc->led_state = 0;
+ hfc->old_led_state = 0;
+
+ /* init the t3 timer */
+ timer_setup(&hfc->t3_timer, l1_timer_expire_t3, 0);
+
+ /* init the t4 timer */
+ timer_setup(&hfc->t4_timer, l1_timer_expire_t4, 0);
+
+ /* init the background machinery for control requests */
+ hfc->ctrl_read.bRequestType = 0xc0;
+ hfc->ctrl_read.bRequest = 1;
+ hfc->ctrl_read.wLength = cpu_to_le16(1);
+ hfc->ctrl_write.bRequestType = 0x40;
+ hfc->ctrl_write.bRequest = 0;
+ hfc->ctrl_write.wLength = 0;
+ usb_fill_control_urb(hfc->ctrl_urb,
+ hfc->dev,
+ hfc->ctrl_out_pipe,
+ (u_char *)&hfc->ctrl_write,
+ NULL, 0, ctrl_complete, hfc);
+ /* Init All Fifos */
+ for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
+ hfc->fifos[i].iso[0].purb = NULL;
+ hfc->fifos[i].iso[1].purb = NULL;
+ hfc->fifos[i].active = 0;
+ }
+ /* register Modul to upper Hisax Layers */
+ hfc->d_if.owner = THIS_MODULE;
+ hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
+ hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
+ for (i = 0; i < 2; i++) {
+ hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
+ hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
+ p_b_if[i] = &hfc->b_if[i];
+ }
+ /* default Prot: EURO ISDN, should be a module_param */
+ hfc->protocol = 2;
+ i = hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
+ if (i) {
+ printk(KERN_INFO "HFC-S USB: hisax_register -> %d\n", i);
+ return i;
+ }
+
+#ifdef CONFIG_HISAX_DEBUG
+ hfc_debug = debug;
+#endif
+
+ for (i = 0; i < 4; i++)
+ hfc->fifos[i].hif = &p_b_if[i / 2]->ifc;
+ for (i = 4; i < 8; i++)
+ hfc->fifos[i].hif = &hfc->d_if.ifc;
+
+ /* 3 (+1) INT IN + 3 ISO OUT */
+ if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) {
+ start_int_fifo(hfc->fifos + HFCUSB_D_RX);
+ if (hfc->fifos[HFCUSB_PCM_RX].pipe)
+ start_int_fifo(hfc->fifos + HFCUSB_PCM_RX);
+ start_int_fifo(hfc->fifos + HFCUSB_B1_RX);
+ start_int_fifo(hfc->fifos + HFCUSB_B2_RX);
+ }
+ /* 3 (+1) ISO IN + 3 ISO OUT */
+ if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) {
+ start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D,
+ rx_iso_complete, 16);
+ if (hfc->fifos[HFCUSB_PCM_RX].pipe)
+ start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX,
+ ISOC_PACKETS_D, rx_iso_complete,
+ 16);
+ start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B,
+ rx_iso_complete, 16);
+ start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B,
+ rx_iso_complete, 16);
+ }
+
+ start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D,
+ tx_iso_complete, 1);
+ start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B,
+ tx_iso_complete, 1);
+ start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B,
+ tx_iso_complete, 1);
+
+ handle_led(hfc, LED_POWER_ON);
+
+ return (0);
+}
+
+/* initial callback for each plugged USB device */
+static int
+hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ hfcusb_data *context;
+ struct usb_host_interface *iface = intf->cur_altsetting;
+ struct usb_host_interface *iface_used = NULL;
+ struct usb_host_endpoint *ep;
+ int ifnum = iface->desc.bInterfaceNumber;
+ int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf,
+ attr, cfg_found, cidx, ep_addr;
+ int cmptbl[16], small_match, iso_packet_size, packet_size,
+ alt_used = 0;
+ hfcsusb_vdata *driver_info;
+
+ vend_idx = 0xffff;
+ for (i = 0; hfcusb_idtab[i].idVendor; i++) {
+ if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor)
+ && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) {
+ vend_idx = i;
+ continue;
+ }
+ }
+
+ printk(KERN_INFO
+ "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
+ ifnum, iface->desc.bAlternateSetting, intf->minor);
+
+ if (vend_idx != 0xffff) {
+ /* if vendor and product ID is OK, start probing alternate settings */
+ alt_idx = 0;
+ small_match = 0xffff;
+
+ /* 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;
+
+ /* check for config EOL element */
+ while (validconf[cfg_used][0]) {
+ cfg_found = 1;
+ vcf = validconf[cfg_used];
+ /* first endpoint descriptor */
+ 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 (ep_addr & 0x80)
+ idx++;
+ attr = ep->desc.bmAttributes;
+ 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;
+
+ /* check if all INT endpoints match minimum interval */
+ if ((attr == USB_ENDPOINT_XFER_INT)
+ && (ep->desc.bInterval < vcf[17])) {
+ cfg_found = 0;
+ }
+ ep++;
+ }
+ for (i = 0; i < 16; i++) {
+ /* all entries must be EP_NOP or EP_NUL for a valid config */
+ if (cmptbl[i] != EP_NOP
+ && cmptbl[i] != EP_NUL)
+ cfg_found = 0;
+ }
+ if (cfg_found) {
+ if (cfg_used < small_match) {
+ small_match = cfg_used;
+ alt_used =
+ probe_alt_setting;
+ iface_used = iface;
+ }
+ }
+ cfg_used++;
+ }
+ alt_idx++;
+ } /* (alt_idx < intf->num_altsetting) */
+
+ /* found a valid USB Ta Endpint config */
+ if (small_match != 0xffff) {
+ iface = iface_used;
+ if (!(context = kzalloc(sizeof(hfcusb_data), GFP_KERNEL)))
+ return (-ENOMEM); /* got no mem */
+
+ ep = iface->endpoint;
+ vcf = validconf[small_match];
+
+ for (i = 0; i < iface->desc.bNumEndpoints; i++) {
+ ep_addr = ep->desc.bEndpointAddress;
+ /* get endpoint base */
+ idx = ((ep_addr & 0x7f) - 1) * 2;
+ if (ep_addr & 0x80)
+ idx++;
+ cidx = idx & 7;
+ attr = ep->desc.bmAttributes;
+
+ /* init Endpoints */
+ if (vcf[idx] != EP_NOP
+ && vcf[idx] != EP_NUL) {
+ switch (attr) {
+ case USB_ENDPOINT_XFER_INT:
+ context->
+ fifos[cidx].
+ pipe =
+ usb_rcvintpipe
+ (dev,
+ ep->desc.
+ bEndpointAddress);
+ context->
+ fifos[cidx].
+ usb_transfer_mode
+ = USB_INT;
+ packet_size =
+ le16_to_cpu(ep->desc.wMaxPacketSize);
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ if (ep_addr & 0x80)
+ context->
+ fifos
+ [cidx].
+ pipe =
+ usb_rcvbulkpipe
+ (dev,
+ ep->
+ desc.
+ bEndpointAddress);
+ else
+ context->
+ fifos
+ [cidx].
+ pipe =
+ usb_sndbulkpipe
+ (dev,
+ ep->
+ desc.
+ bEndpointAddress);
+ context->
+ fifos[cidx].
+ usb_transfer_mode
+ = USB_BULK;
+ packet_size =
+ le16_to_cpu(ep->desc.wMaxPacketSize);
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (ep_addr & 0x80)
+ context->
+ fifos
+ [cidx].
+ pipe =
+ usb_rcvisocpipe
+ (dev,
+ ep->
+ desc.
+ bEndpointAddress);
+ else
+ context->
+ fifos
+ [cidx].
+ pipe =
+ usb_sndisocpipe
+ (dev,
+ ep->
+ desc.
+ bEndpointAddress);
+ context->
+ fifos[cidx].
+ usb_transfer_mode
+ = USB_ISOC;
+ iso_packet_size =
+ le16_to_cpu(ep->desc.wMaxPacketSize);
+ break;
+ default:
+ context->
+ fifos[cidx].
+ pipe = 0;
+ } /* switch attribute */
+
+ if (context->fifos[cidx].pipe) {
+ context->fifos[cidx].
+ fifonum = cidx;
+ context->fifos[cidx].hfc =
+ context;
+ context->fifos[cidx].usb_packet_maxlen =
+ le16_to_cpu(ep->desc.wMaxPacketSize);
+ context->fifos[cidx].
+ intervall =
+ ep->desc.bInterval;
+ context->fifos[cidx].
+ skbuff = NULL;
+ }
+ }
+ ep++;
+ }
+ context->dev = dev; /* save device */
+ context->if_used = ifnum; /* save used interface */
+ context->alt_used = alt_used; /* and alternate config */
+ context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
+ context->cfg_used = vcf[16]; /* store used config */
+ context->vend_idx = vend_idx; /* store found vendor */
+ context->packet_size = packet_size;
+ context->iso_packet_size = iso_packet_size;
+
+ /* create the control pipes needed for register access */
+ context->ctrl_in_pipe =
+ usb_rcvctrlpipe(context->dev, 0);
+ context->ctrl_out_pipe =
+ usb_sndctrlpipe(context->dev, 0);
+
+ driver_info = (hfcsusb_vdata *)
+ hfcusb_idtab[vend_idx].driver_info;
+
+ context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
+
+ if (!context->ctrl_urb) {
+ pr_warn("%s: No memory for control urb\n",
+ driver_info->vend_name);
+ kfree(context);
+ return -ENOMEM;
+ }
+
+ pr_info("HFC-S USB: detected \"%s\"\n",
+ driver_info->vend_name);
+
+ DBG(HFCUSB_DBG_INIT,
+ "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d), E-Channel(%d)",
+ conf_str[small_match], context->if_used,
+ context->alt_used,
+ validconf[small_match][18]);
+
+ /* init the chip and register the driver */
+ if (hfc_usb_init(context)) {
+ usb_kill_urb(context->ctrl_urb);
+ usb_free_urb(context->ctrl_urb);
+ context->ctrl_urb = NULL;
+ kfree(context);
+ return (-EIO);
+ }
+ usb_set_intfdata(intf, context);
+ return (0);
+ }
+ } else {
+ printk(KERN_INFO
+ "HFC-S USB: no valid vendor found in USB descriptor\n");
+ }
+ return (-EIO);
+}
+
+/* callback for unplugged USB device */
+static void
+hfc_usb_disconnect(struct usb_interface *intf)
+{
+ hfcusb_data *context = usb_get_intfdata(intf);
+ int i;
+
+ handle_led(context, LED_POWER_OFF);
+ schedule_timeout(HZ / 100);
+
+ printk(KERN_INFO "HFC-S USB: device disconnect\n");
+ context->disc_flag = 1;
+ usb_set_intfdata(intf, NULL);
+
+ if (timer_pending(&context->t3_timer))
+ del_timer(&context->t3_timer);
+ if (timer_pending(&context->t4_timer))
+ del_timer(&context->t4_timer);
+
+ /* tell all fifos to terminate */
+ for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
+ if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
+ if (context->fifos[i].active > 0) {
+ stop_isoc_chain(&context->fifos[i]);
+ DBG(HFCUSB_DBG_INIT,
+ "HFC-S USB: %s stopping ISOC chain Fifo(%i)",
+ __func__, i);
+ }
+ } else {
+ if (context->fifos[i].active > 0) {
+ context->fifos[i].active = 0;
+ DBG(HFCUSB_DBG_INIT,
+ "HFC-S USB: %s unlinking URB for Fifo(%i)",
+ __func__, i);
+ }
+ usb_kill_urb(context->fifos[i].urb);
+ usb_free_urb(context->fifos[i].urb);
+ context->fifos[i].urb = NULL;
+ }
+ context->fifos[i].active = 0;
+ }
+ usb_kill_urb(context->ctrl_urb);
+ usb_free_urb(context->ctrl_urb);
+ context->ctrl_urb = NULL;
+ hisax_unregister(&context->d_if);
+ kfree(context); /* free our structure again */
+}
+
+static struct usb_driver hfc_drv = {
+ .name = "hfc_usb",
+ .id_table = hfcusb_idtab,
+ .probe = hfc_usb_probe,
+ .disconnect = hfc_usb_disconnect,
+ .disable_hub_initiated_lpm = 1,
+};
+
+static void __exit
+hfc_usb_mod_exit(void)
+{
+ usb_deregister(&hfc_drv); /* release our driver */
+ printk(KERN_INFO "HFC-S USB: module removed\n");
+}
+
+static int __init
+hfc_usb_mod_init(void)
+{
+ char revstr[30], datestr[30], dummy[30];
+#ifndef CONFIG_HISAX_DEBUG
+ hfc_debug = debug;
+#endif
+ sscanf(hfcusb_revision,
+ "%s %s $ %s %s %s $ ", dummy, revstr,
+ dummy, datestr, dummy);
+ printk(KERN_INFO
+ "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
+ revstr, datestr, debug);
+ if (usb_register(&hfc_drv)) {
+ printk(KERN_INFO
+ "HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
+ return (-1); /* unable to register */
+ }
+ return (0);
+}
+
+module_init(hfc_usb_mod_init);
+module_exit(hfc_usb_mod_exit);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, hfcusb_idtab);