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path: root/drivers/isdn/hisax/st5481_usb.c
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Diffstat (limited to 'drivers/isdn/hisax/st5481_usb.c')
-rw-r--r--drivers/isdn/hisax/st5481_usb.c659
1 files changed, 0 insertions, 659 deletions
diff --git a/drivers/isdn/hisax/st5481_usb.c b/drivers/isdn/hisax/st5481_usb.c
deleted file mode 100644
index f207fda691c7..000000000000
--- a/drivers/isdn/hisax/st5481_usb.c
+++ /dev/null
@@ -1,659 +0,0 @@
-/*
- * Driver for ST5481 USB ISDN modem
- *
- * Author Frode Isaksen
- * Copyright 2001 by Frode Isaksen <fisaksen@bewan.com>
- * 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
-
-#include <linux/init.h>
-#include <linux/usb.h>
-#include <linux/slab.h>
-#include "st5481.h"
-
-static int st5481_isoc_flatten(struct urb *urb);
-
-/* ======================================================================
- * control pipe
- */
-
-/*
- * Send the next endpoint 0 request stored in the FIFO.
- * Called either by the completion or by usb_ctrl_msg.
- */
-static void usb_next_ctrl_msg(struct urb *urb,
- struct st5481_adapter *adapter)
-{
- struct st5481_ctrl *ctrl = &adapter->ctrl;
- int r_index;
-
- if (test_and_set_bit(0, &ctrl->busy)) {
- return;
- }
-
- if ((r_index = fifo_remove(&ctrl->msg_fifo.f)) < 0) {
- test_and_clear_bit(0, &ctrl->busy);
- return;
- }
- urb->setup_packet =
- (unsigned char *)&ctrl->msg_fifo.data[r_index];
-
- DBG(1, "request=0x%02x,value=0x%04x,index=%x",
- ((struct ctrl_msg *)urb->setup_packet)->dr.bRequest,
- ((struct ctrl_msg *)urb->setup_packet)->dr.wValue,
- ((struct ctrl_msg *)urb->setup_packet)->dr.wIndex);
-
- // Prepare the URB
- urb->dev = adapter->usb_dev;
-
- SUBMIT_URB(urb, GFP_ATOMIC);
-}
-
-/*
- * Asynchronous endpoint 0 request (async version of usb_control_msg).
- * The request will be queued up in a FIFO if the endpoint is busy.
- */
-static void usb_ctrl_msg(struct st5481_adapter *adapter,
- u8 request, u8 requesttype, u16 value, u16 index,
- ctrl_complete_t complete, void *context)
-{
- struct st5481_ctrl *ctrl = &adapter->ctrl;
- int w_index;
- struct ctrl_msg *ctrl_msg;
-
- if ((w_index = fifo_add(&ctrl->msg_fifo.f)) < 0) {
- WARNING("control msg FIFO full");
- return;
- }
- ctrl_msg = &ctrl->msg_fifo.data[w_index];
-
- ctrl_msg->dr.bRequestType = requesttype;
- ctrl_msg->dr.bRequest = request;
- ctrl_msg->dr.wValue = cpu_to_le16p(&value);
- ctrl_msg->dr.wIndex = cpu_to_le16p(&index);
- ctrl_msg->dr.wLength = 0;
- ctrl_msg->complete = complete;
- ctrl_msg->context = context;
-
- usb_next_ctrl_msg(ctrl->urb, adapter);
-}
-
-/*
- * Asynchronous endpoint 0 device request.
- */
-void st5481_usb_device_ctrl_msg(struct st5481_adapter *adapter,
- u8 request, u16 value,
- ctrl_complete_t complete, void *context)
-{
- usb_ctrl_msg(adapter, request,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- value, 0, complete, context);
-}
-
-/*
- * Asynchronous pipe reset (async version of usb_clear_halt).
- */
-void st5481_usb_pipe_reset(struct st5481_adapter *adapter,
- u_char pipe,
- ctrl_complete_t complete, void *context)
-{
- DBG(1, "pipe=%02x", pipe);
-
- usb_ctrl_msg(adapter,
- USB_REQ_CLEAR_FEATURE, USB_DIR_OUT | USB_RECIP_ENDPOINT,
- 0, pipe, complete, context);
-}
-
-
-/*
- Physical level functions
-*/
-
-void st5481_ph_command(struct st5481_adapter *adapter, unsigned int command)
-{
- DBG(8, "command=%s", ST5481_CMD_string(command));
-
- st5481_usb_device_ctrl_msg(adapter, TXCI, command, NULL, NULL);
-}
-
-/*
- * The request on endpoint 0 has completed.
- * Call the user provided completion routine and try
- * to send the next request.
- */
-static void usb_ctrl_complete(struct urb *urb)
-{
- struct st5481_adapter *adapter = urb->context;
- struct st5481_ctrl *ctrl = &adapter->ctrl;
- struct ctrl_msg *ctrl_msg;
-
- if (unlikely(urb->status < 0)) {
- switch (urb->status) {
- case -ENOENT:
- case -ESHUTDOWN:
- case -ECONNRESET:
- DBG(1, "urb killed status %d", urb->status);
- return; // Give up
- default:
- WARNING("urb status %d", urb->status);
- break;
- }
- }
-
- ctrl_msg = (struct ctrl_msg *)urb->setup_packet;
-
- if (ctrl_msg->dr.bRequest == USB_REQ_CLEAR_FEATURE) {
- /* Special case handling for pipe reset */
- le16_to_cpus(&ctrl_msg->dr.wIndex);
- usb_reset_endpoint(adapter->usb_dev, ctrl_msg->dr.wIndex);
- }
-
- if (ctrl_msg->complete)
- ctrl_msg->complete(ctrl_msg->context);
-
- clear_bit(0, &ctrl->busy);
-
- // Try to send next control message
- usb_next_ctrl_msg(urb, adapter);
- return;
-}
-
-/* ======================================================================
- * interrupt pipe
- */
-
-/*
- * The interrupt endpoint will be called when any
- * of the 6 registers changes state (depending on masks).
- * Decode the register values and schedule a private event.
- * Called at interrupt.
- */
-static void usb_int_complete(struct urb *urb)
-{
- u8 *data = urb->transfer_buffer;
- u8 irqbyte;
- struct st5481_adapter *adapter = urb->context;
- int j;
- int status;
-
- switch (urb->status) {
- case 0:
- /* success */
- break;
- case -ECONNRESET:
- case -ENOENT:
- case -ESHUTDOWN:
- /* this urb is terminated, clean up */
- DBG(2, "urb shutting down with status: %d", urb->status);
- return;
- default:
- WARNING("nonzero urb status received: %d", urb->status);
- goto exit;
- }
-
-
- DBG_PACKET(2, data, INT_PKT_SIZE);
-
- if (urb->actual_length == 0) {
- goto exit;
- }
-
- irqbyte = data[MPINT];
- if (irqbyte & DEN_INT)
- FsmEvent(&adapter->d_out.fsm, EV_DOUT_DEN, NULL);
-
- if (irqbyte & DCOLL_INT)
- FsmEvent(&adapter->d_out.fsm, EV_DOUT_COLL, NULL);
-
- irqbyte = data[FFINT_D];
- if (irqbyte & OUT_UNDERRUN)
- FsmEvent(&adapter->d_out.fsm, EV_DOUT_UNDERRUN, NULL);
-
- if (irqbyte & OUT_DOWN)
- ;// printk("OUT_DOWN\n");
-
- irqbyte = data[MPINT];
- if (irqbyte & RXCI_INT)
- FsmEvent(&adapter->l1m, data[CCIST] & 0x0f, NULL);
-
- for (j = 0; j < 2; j++)
- adapter->bcs[j].b_out.flow_event |= data[FFINT_B1 + j];
-
- urb->actual_length = 0;
-
-exit:
- status = usb_submit_urb(urb, GFP_ATOMIC);
- if (status)
- WARNING("usb_submit_urb failed with result %d", status);
-}
-
-/* ======================================================================
- * initialization
- */
-
-int st5481_setup_usb(struct st5481_adapter *adapter)
-{
- struct usb_device *dev = adapter->usb_dev;
- struct st5481_ctrl *ctrl = &adapter->ctrl;
- struct st5481_intr *intr = &adapter->intr;
- struct usb_interface *intf;
- struct usb_host_interface *altsetting = NULL;
- struct usb_host_endpoint *endpoint;
- int status;
- struct urb *urb;
- u8 *buf;
-
- DBG(2, "");
-
- if ((status = usb_reset_configuration(dev)) < 0) {
- WARNING("reset_configuration failed,status=%d", status);
- return status;
- }
-
- intf = usb_ifnum_to_if(dev, 0);
- if (intf)
- altsetting = usb_altnum_to_altsetting(intf, 3);
- if (!altsetting)
- return -ENXIO;
-
- // Check if the config is sane
- if (altsetting->desc.bNumEndpoints != 7) {
- WARNING("expecting 7 got %d endpoints!", altsetting->desc.bNumEndpoints);
- return -EINVAL;
- }
-
- // The descriptor is wrong for some early samples of the ST5481 chip
- altsetting->endpoint[3].desc.wMaxPacketSize = cpu_to_le16(32);
- altsetting->endpoint[4].desc.wMaxPacketSize = cpu_to_le16(32);
-
- // Use alternative setting 3 on interface 0 to have 2B+D
- if ((status = usb_set_interface(dev, 0, 3)) < 0) {
- WARNING("usb_set_interface failed,status=%d", status);
- return status;
- }
-
- // Allocate URB for control endpoint
- urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb) {
- return -ENOMEM;
- }
- ctrl->urb = urb;
-
- // Fill the control URB
- usb_fill_control_urb(urb, dev,
- usb_sndctrlpipe(dev, 0),
- NULL, NULL, 0, usb_ctrl_complete, adapter);
-
-
- fifo_init(&ctrl->msg_fifo.f, ARRAY_SIZE(ctrl->msg_fifo.data));
-
- // Allocate URBs and buffers for interrupt endpoint
- urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb) {
- goto err1;
- }
- intr->urb = urb;
-
- buf = kmalloc(INT_PKT_SIZE, GFP_KERNEL);
- if (!buf) {
- goto err2;
- }
-
- endpoint = &altsetting->endpoint[EP_INT-1];
-
- // Fill the interrupt URB
- usb_fill_int_urb(urb, dev,
- usb_rcvintpipe(dev, endpoint->desc.bEndpointAddress),
- buf, INT_PKT_SIZE,
- usb_int_complete, adapter,
- endpoint->desc.bInterval);
-
- return 0;
-err2:
- usb_free_urb(intr->urb);
- intr->urb = NULL;
-err1:
- usb_free_urb(ctrl->urb);
- ctrl->urb = NULL;
-
- return -ENOMEM;
-}
-
-/*
- * Release buffers and URBs for the interrupt and control
- * endpoint.
- */
-void st5481_release_usb(struct st5481_adapter *adapter)
-{
- struct st5481_intr *intr = &adapter->intr;
- struct st5481_ctrl *ctrl = &adapter->ctrl;
-
- DBG(1, "");
-
- // Stop and free Control and Interrupt URBs
- usb_kill_urb(ctrl->urb);
- kfree(ctrl->urb->transfer_buffer);
- usb_free_urb(ctrl->urb);
- ctrl->urb = NULL;
-
- usb_kill_urb(intr->urb);
- kfree(intr->urb->transfer_buffer);
- usb_free_urb(intr->urb);
- intr->urb = NULL;
-}
-
-/*
- * Initialize the adapter.
- */
-void st5481_start(struct st5481_adapter *adapter)
-{
- static const u8 init_cmd_table[] = {
- SET_DEFAULT, 0,
- STT, 0,
- SDA_MIN, 0x0d,
- SDA_MAX, 0x29,
- SDELAY_VALUE, 0x14,
- GPIO_DIR, 0x01,
- GPIO_OUT, RED_LED,
-// FFCTRL_OUT_D,4,
-// FFCTRH_OUT_D,12,
- FFCTRL_OUT_B1, 6,
- FFCTRH_OUT_B1, 20,
- FFCTRL_OUT_B2, 6,
- FFCTRH_OUT_B2, 20,
- MPMSK, RXCI_INT + DEN_INT + DCOLL_INT,
- 0
- };
- struct st5481_intr *intr = &adapter->intr;
- int i = 0;
- u8 request, value;
-
- DBG(8, "");
-
- adapter->leds = RED_LED;
-
- // Start receiving on the interrupt endpoint
- SUBMIT_URB(intr->urb, GFP_KERNEL);
-
- while ((request = init_cmd_table[i++])) {
- value = init_cmd_table[i++];
- st5481_usb_device_ctrl_msg(adapter, request, value, NULL, NULL);
- }
- st5481_ph_command(adapter, ST5481_CMD_PUP);
-}
-
-/*
- * Reset the adapter to default values.
- */
-void st5481_stop(struct st5481_adapter *adapter)
-{
- DBG(8, "");
-
- st5481_usb_device_ctrl_msg(adapter, SET_DEFAULT, 0, NULL, NULL);
-}
-
-/* ======================================================================
- * isochronous USB helpers
- */
-
-static void
-fill_isoc_urb(struct urb *urb, struct usb_device *dev,
- unsigned int pipe, void *buf, int num_packets,
- int packet_size, usb_complete_t complete,
- void *context)
-{
- int k;
-
- usb_fill_int_urb(urb, dev, pipe, buf, num_packets * packet_size,
- complete, context, 1);
-
- urb->number_of_packets = num_packets;
- urb->transfer_flags = URB_ISO_ASAP;
- 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;
- }
-}
-
-int
-st5481_setup_isocpipes(struct urb *urb[2], struct usb_device *dev,
- unsigned int pipe, int num_packets,
- int packet_size, int buf_size,
- usb_complete_t complete, void *context)
-{
- int j, retval;
- unsigned char *buf;
-
- for (j = 0; j < 2; j++) {
- retval = -ENOMEM;
- urb[j] = usb_alloc_urb(num_packets, GFP_KERNEL);
- if (!urb[j])
- goto err;
-
- // Allocate memory for 2000bytes/sec (16Kb/s)
- buf = kmalloc(buf_size, GFP_KERNEL);
- if (!buf)
- goto err;
-
- // Fill the isochronous URB
- fill_isoc_urb(urb[j], dev, pipe, buf,
- num_packets, packet_size, complete,
- context);
- }
- return 0;
-
-err:
- for (j = 0; j < 2; j++) {
- if (urb[j]) {
- kfree(urb[j]->transfer_buffer);
- urb[j]->transfer_buffer = NULL;
- usb_free_urb(urb[j]);
- urb[j] = NULL;
- }
- }
- return retval;
-}
-
-void st5481_release_isocpipes(struct urb *urb[2])
-{
- int j;
-
- for (j = 0; j < 2; j++) {
- usb_kill_urb(urb[j]);
- kfree(urb[j]->transfer_buffer);
- usb_free_urb(urb[j]);
- urb[j] = NULL;
- }
-}
-
-/*
- * Decode frames received on the B/D channel.
- * Note that this function will be called continuously
- * with 64Kbit/s / 16Kbit/s of data and hence it will be
- * called 50 times per second with 20 ISOC descriptors.
- * Called at interrupt.
- */
-static void usb_in_complete(struct urb *urb)
-{
- struct st5481_in *in = urb->context;
- unsigned char *ptr;
- struct sk_buff *skb;
- int len, count, status;
-
- if (unlikely(urb->status < 0)) {
- switch (urb->status) {
- case -ENOENT:
- case -ESHUTDOWN:
- case -ECONNRESET:
- DBG(1, "urb killed status %d", urb->status);
- return; // Give up
- default:
- WARNING("urb status %d", urb->status);
- break;
- }
- }
-
- DBG_ISO_PACKET(0x80, urb);
-
- len = st5481_isoc_flatten(urb);
- ptr = urb->transfer_buffer;
- while (len > 0) {
- if (in->mode == L1_MODE_TRANS) {
- memcpy(in->rcvbuf, ptr, len);
- status = len;
- len = 0;
- } else {
- status = isdnhdlc_decode(&in->hdlc_state, ptr, len, &count,
- in->rcvbuf, in->bufsize);
- ptr += count;
- len -= count;
- }
-
- if (status > 0) {
- // Good frame received
- DBG(4, "count=%d", status);
- DBG_PACKET(0x400, in->rcvbuf, status);
- if (!(skb = dev_alloc_skb(status))) {
- WARNING("receive out of memory\n");
- break;
- }
- skb_put_data(skb, in->rcvbuf, status);
- in->hisax_if->l1l2(in->hisax_if, PH_DATA | INDICATION, skb);
- } else if (status == -HDLC_CRC_ERROR) {
- INFO("CRC error");
- } else if (status == -HDLC_FRAMING_ERROR) {
- INFO("framing error");
- } else if (status == -HDLC_LENGTH_ERROR) {
- INFO("length error");
- }
- }
-
- // Prepare URB for next transfer
- urb->dev = in->adapter->usb_dev;
- urb->actual_length = 0;
-
- SUBMIT_URB(urb, GFP_ATOMIC);
-}
-
-int st5481_setup_in(struct st5481_in *in)
-{
- struct usb_device *dev = in->adapter->usb_dev;
- int retval;
-
- DBG(4, "");
-
- in->rcvbuf = kmalloc(in->bufsize, GFP_KERNEL);
- retval = -ENOMEM;
- if (!in->rcvbuf)
- goto err;
-
- retval = st5481_setup_isocpipes(in->urb, dev,
- usb_rcvisocpipe(dev, in->ep),
- in->num_packets, in->packet_size,
- in->num_packets * in->packet_size,
- usb_in_complete, in);
- if (retval)
- goto err_free;
- return 0;
-
-err_free:
- kfree(in->rcvbuf);
-err:
- return retval;
-}
-
-void st5481_release_in(struct st5481_in *in)
-{
- DBG(2, "");
-
- st5481_release_isocpipes(in->urb);
-}
-
-/*
- * Make the transfer_buffer contiguous by
- * copying from the iso descriptors if necessary.
- */
-static int st5481_isoc_flatten(struct urb *urb)
-{
- struct usb_iso_packet_descriptor *pipd, *pend;
- unsigned char *src, *dst;
- unsigned int len;
-
- if (urb->status < 0) {
- return urb->status;
- }
- for (pipd = &urb->iso_frame_desc[0],
- pend = &urb->iso_frame_desc[urb->number_of_packets],
- dst = urb->transfer_buffer;
- pipd < pend;
- pipd++) {
-
- if (pipd->status < 0) {
- return (pipd->status);
- }
-
- len = pipd->actual_length;
- pipd->actual_length = 0;
- src = urb->transfer_buffer + pipd->offset;
-
- if (src != dst) {
- // Need to copy since isoc buffers not full
- while (len--) {
- *dst++ = *src++;
- }
- } else {
- // No need to copy, just update destination buffer
- dst += len;
- }
- }
- // Return size of flattened buffer
- return (dst - (unsigned char *)urb->transfer_buffer);
-}
-
-static void st5481_start_rcv(void *context)
-{
- struct st5481_in *in = context;
- struct st5481_adapter *adapter = in->adapter;
-
- DBG(4, "");
-
- in->urb[0]->dev = adapter->usb_dev;
- SUBMIT_URB(in->urb[0], GFP_KERNEL);
-
- in->urb[1]->dev = adapter->usb_dev;
- SUBMIT_URB(in->urb[1], GFP_KERNEL);
-}
-
-void st5481_in_mode(struct st5481_in *in, int mode)
-{
- if (in->mode == mode)
- return;
-
- in->mode = mode;
-
- usb_unlink_urb(in->urb[0]);
- usb_unlink_urb(in->urb[1]);
-
- if (in->mode != L1_MODE_NULL) {
- if (in->mode != L1_MODE_TRANS) {
- u32 features = HDLC_BITREVERSE;
-
- if (in->mode == L1_MODE_HDLC_56K)
- features |= HDLC_56KBIT;
- isdnhdlc_rcv_init(&in->hdlc_state, features);
- }
- st5481_usb_pipe_reset(in->adapter, in->ep, NULL, NULL);
- st5481_usb_device_ctrl_msg(in->adapter, in->counter,
- in->packet_size,
- NULL, NULL);
- st5481_start_rcv(in);
- } else {
- st5481_usb_device_ctrl_msg(in->adapter, in->counter,
- 0, NULL, NULL);
- }
-}