diff options
Diffstat (limited to 'kernel/drivers/isdn/hisax/hfc_usb.c')
| -rw-r--r-- | kernel/drivers/isdn/hisax/hfc_usb.c | 1614 |
1 files changed, 1614 insertions, 0 deletions
diff --git a/kernel/drivers/isdn/hisax/hfc_usb.c b/kernel/drivers/isdn/hisax/hfc_usb.c new file mode 100644 index 000000000..678bd5224 --- /dev/null +++ b/kernel/drivers/isdn/hisax/hfc_usb.c @@ -0,0 +1,1614 @@ +/* + * 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 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(hfcusb_data *hfc) +{ + 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(hfcusb_data *hfc) +{ + 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; + + urb->dev = dev; + urb->pipe = pipe; + urb->complete = complete; + urb->number_of_packets = num_packets; + urb->transfer_buffer_length = packet_size * num_packets; + urb->context = context; + urb->transfer_buffer = buf; + 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; + } +} + +/* 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) { + memcpy(skb_put(fifo->skbuff, len), 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 */ + init_timer(&hfc->t3_timer); + hfc->t3_timer.data = (long) hfc; + hfc->t3_timer.function = (void *) l1_timer_expire_t3; + + /* init the t4 timer */ + init_timer(&hfc->t4_timer); + hfc->t4_timer.data = (long) hfc; + hfc->t4_timer.function = (void *) l1_timer_expire_t4; + + /* 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); |