460 lines
11 KiB
C
460 lines
11 KiB
C
/*
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* Driver for the Siano SMS1xxx USB dongle
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*
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* author: Anatoly Greenblat
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*
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* Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
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*
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include "smscoreapi.h"
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#include "sms-cards.h"
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#define USB1_BUFFER_SIZE 0x1000
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#define USB2_BUFFER_SIZE 0x4000
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#define MAX_BUFFERS 50
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#define MAX_URBS 10
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struct smsusb_device_t;
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struct smsusb_urb_t {
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struct smscore_buffer_t *cb;
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struct smsusb_device_t *dev;
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struct urb urb;
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};
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struct smsusb_device_t {
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struct usb_device *udev;
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struct smscore_device_t *coredev;
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struct smsusb_urb_t surbs[MAX_URBS];
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int response_alignment;
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int buffer_size;
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};
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static int smsusb_submit_urb(struct smsusb_device_t *dev,
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struct smsusb_urb_t *surb);
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static void smsusb_onresponse(struct urb *urb)
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{
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struct smsusb_urb_t *surb = (struct smsusb_urb_t *) urb->context;
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struct smsusb_device_t *dev = surb->dev;
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if (urb->status < 0) {
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sms_err("error, urb status %d, %d bytes",
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urb->status, urb->actual_length);
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return;
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}
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if (urb->actual_length > 0) {
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struct SmsMsgHdr_ST *phdr = (struct SmsMsgHdr_ST *) surb->cb->p;
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if (urb->actual_length >= phdr->msgLength) {
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surb->cb->size = phdr->msgLength;
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if (dev->response_alignment &&
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(phdr->msgFlags & MSG_HDR_FLAG_SPLIT_MSG)) {
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surb->cb->offset =
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dev->response_alignment +
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((phdr->msgFlags >> 8) & 3);
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/* sanity check */
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if (((int) phdr->msgLength +
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surb->cb->offset) > urb->actual_length) {
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sms_err("invalid response "
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"msglen %d offset %d "
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"size %d",
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phdr->msgLength,
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surb->cb->offset,
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urb->actual_length);
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goto exit_and_resubmit;
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}
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/* move buffer pointer and
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* copy header to its new location */
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memcpy((char *) phdr + surb->cb->offset,
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phdr, sizeof(struct SmsMsgHdr_ST));
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} else
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surb->cb->offset = 0;
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smscore_onresponse(dev->coredev, surb->cb);
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surb->cb = NULL;
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} else {
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sms_err("invalid response "
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"msglen %d actual %d",
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phdr->msgLength, urb->actual_length);
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}
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}
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exit_and_resubmit:
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smsusb_submit_urb(dev, surb);
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}
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static int smsusb_submit_urb(struct smsusb_device_t *dev,
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struct smsusb_urb_t *surb)
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{
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if (!surb->cb) {
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surb->cb = smscore_getbuffer(dev->coredev);
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if (!surb->cb) {
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sms_err("smscore_getbuffer(...) returned NULL");
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return -ENOMEM;
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}
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}
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usb_fill_bulk_urb(
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&surb->urb,
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dev->udev,
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usb_rcvbulkpipe(dev->udev, 0x81),
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surb->cb->p,
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dev->buffer_size,
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smsusb_onresponse,
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surb
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);
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surb->urb.transfer_dma = surb->cb->phys;
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surb->urb.transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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return usb_submit_urb(&surb->urb, GFP_ATOMIC);
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}
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static void smsusb_stop_streaming(struct smsusb_device_t *dev)
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{
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int i;
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for (i = 0; i < MAX_URBS; i++) {
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usb_kill_urb(&dev->surbs[i].urb);
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if (dev->surbs[i].cb) {
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smscore_putbuffer(dev->coredev, dev->surbs[i].cb);
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dev->surbs[i].cb = NULL;
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}
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}
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}
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static int smsusb_start_streaming(struct smsusb_device_t *dev)
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{
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int i, rc;
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for (i = 0; i < MAX_URBS; i++) {
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rc = smsusb_submit_urb(dev, &dev->surbs[i]);
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if (rc < 0) {
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sms_err("smsusb_submit_urb(...) failed");
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smsusb_stop_streaming(dev);
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break;
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}
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}
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return rc;
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}
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static int smsusb_sendrequest(void *context, void *buffer, size_t size)
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{
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struct smsusb_device_t *dev = (struct smsusb_device_t *) context;
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int dummy;
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return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
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buffer, size, &dummy, 1000);
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}
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static char *smsusb1_fw_lkup[] = {
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"dvbt_stellar_usb.inp",
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"dvbh_stellar_usb.inp",
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"tdmb_stellar_usb.inp",
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"none",
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"dvbt_bda_stellar_usb.inp",
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};
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static inline char *sms_get_fw_name(int mode, int board_id)
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{
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char **fw = sms_get_board(board_id)->fw;
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return (fw && fw[mode]) ? fw[mode] : smsusb1_fw_lkup[mode];
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}
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static int smsusb1_load_firmware(struct usb_device *udev, int id, int board_id)
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{
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const struct firmware *fw;
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u8 *fw_buffer;
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int rc, dummy;
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char *fw_filename;
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if (id < DEVICE_MODE_DVBT || id > DEVICE_MODE_DVBT_BDA) {
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sms_err("invalid firmware id specified %d", id);
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return -EINVAL;
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}
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fw_filename = sms_get_fw_name(id, board_id);
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rc = request_firmware(&fw, fw_filename, &udev->dev);
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if (rc < 0) {
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sms_warn("failed to open \"%s\" mode %d, "
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"trying again with default firmware", fw_filename, id);
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fw_filename = smsusb1_fw_lkup[id];
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rc = request_firmware(&fw, fw_filename, &udev->dev);
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if (rc < 0) {
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sms_warn("failed to open \"%s\" mode %d",
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fw_filename, id);
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return rc;
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}
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}
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fw_buffer = kmalloc(fw->size, GFP_KERNEL);
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if (fw_buffer) {
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memcpy(fw_buffer, fw->data, fw->size);
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rc = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 2),
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fw_buffer, fw->size, &dummy, 1000);
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sms_info("sent %zd(%d) bytes, rc %d", fw->size, dummy, rc);
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kfree(fw_buffer);
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} else {
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sms_err("failed to allocate firmware buffer");
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rc = -ENOMEM;
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}
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sms_info("read FW %s, size=%zd", fw_filename, fw->size);
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release_firmware(fw);
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return rc;
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}
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static void smsusb1_detectmode(void *context, int *mode)
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{
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char *product_string =
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((struct smsusb_device_t *) context)->udev->product;
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*mode = DEVICE_MODE_NONE;
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if (!product_string) {
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product_string = "none";
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sms_err("product string not found");
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} else if (strstr(product_string, "DVBH"))
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*mode = 1;
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else if (strstr(product_string, "BDA"))
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*mode = 4;
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else if (strstr(product_string, "DVBT"))
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*mode = 0;
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else if (strstr(product_string, "TDMB"))
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*mode = 2;
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sms_info("%d \"%s\"", *mode, product_string);
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}
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static int smsusb1_setmode(void *context, int mode)
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{
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struct SmsMsgHdr_ST Msg = { MSG_SW_RELOAD_REQ, 0, HIF_TASK,
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sizeof(struct SmsMsgHdr_ST), 0 };
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if (mode < DEVICE_MODE_DVBT || mode > DEVICE_MODE_DVBT_BDA) {
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sms_err("invalid firmware id specified %d", mode);
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return -EINVAL;
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}
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return smsusb_sendrequest(context, &Msg, sizeof(Msg));
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}
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static void smsusb_term_device(struct usb_interface *intf)
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{
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struct smsusb_device_t *dev =
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(struct smsusb_device_t *) usb_get_intfdata(intf);
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if (dev) {
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smsusb_stop_streaming(dev);
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/* unregister from smscore */
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if (dev->coredev)
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smscore_unregister_device(dev->coredev);
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kfree(dev);
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sms_info("device %p destroyed", dev);
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}
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usb_set_intfdata(intf, NULL);
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}
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static int smsusb_init_device(struct usb_interface *intf, int board_id)
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{
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struct smsdevice_params_t params;
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struct smsusb_device_t *dev;
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int i, rc;
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/* create device object */
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dev = kzalloc(sizeof(struct smsusb_device_t), GFP_KERNEL);
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if (!dev) {
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sms_err("kzalloc(sizeof(struct smsusb_device_t) failed");
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return -ENOMEM;
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}
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memset(¶ms, 0, sizeof(params));
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usb_set_intfdata(intf, dev);
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dev->udev = interface_to_usbdev(intf);
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params.device_type = sms_get_board(board_id)->type;
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switch (params.device_type) {
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case SMS_STELLAR:
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dev->buffer_size = USB1_BUFFER_SIZE;
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params.setmode_handler = smsusb1_setmode;
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params.detectmode_handler = smsusb1_detectmode;
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break;
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default:
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sms_err("Unspecified sms device type!");
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/* fall-thru */
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case SMS_NOVA_A0:
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case SMS_NOVA_B0:
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case SMS_VEGA:
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dev->buffer_size = USB2_BUFFER_SIZE;
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dev->response_alignment =
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dev->udev->ep_in[1]->desc.wMaxPacketSize -
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sizeof(struct SmsMsgHdr_ST);
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params.flags |= SMS_DEVICE_FAMILY2;
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break;
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}
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params.device = &dev->udev->dev;
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params.buffer_size = dev->buffer_size;
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params.num_buffers = MAX_BUFFERS;
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params.sendrequest_handler = smsusb_sendrequest;
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params.context = dev;
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snprintf(params.devpath, sizeof(params.devpath),
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"usb\\%d-%s", dev->udev->bus->busnum, dev->udev->devpath);
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/* register in smscore */
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rc = smscore_register_device(¶ms, &dev->coredev);
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if (rc < 0) {
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sms_err("smscore_register_device(...) failed, rc %d", rc);
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smsusb_term_device(intf);
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return rc;
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}
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smscore_set_board_id(dev->coredev, board_id);
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/* initialize urbs */
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for (i = 0; i < MAX_URBS; i++) {
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dev->surbs[i].dev = dev;
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usb_init_urb(&dev->surbs[i].urb);
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}
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sms_info("smsusb_start_streaming(...).");
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rc = smsusb_start_streaming(dev);
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if (rc < 0) {
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sms_err("smsusb_start_streaming(...) failed");
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smsusb_term_device(intf);
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return rc;
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}
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rc = smscore_start_device(dev->coredev);
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if (rc < 0) {
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sms_err("smscore_start_device(...) failed");
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smsusb_term_device(intf);
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return rc;
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}
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sms_info("device %p created", dev);
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return rc;
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}
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static int smsusb_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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struct usb_device *udev = interface_to_usbdev(intf);
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char devpath[32];
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int i, rc;
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rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x81));
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rc = usb_clear_halt(udev, usb_rcvbulkpipe(udev, 0x02));
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if (intf->num_altsetting > 0) {
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rc = usb_set_interface(
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udev, intf->cur_altsetting->desc.bInterfaceNumber, 0);
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if (rc < 0) {
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sms_err("usb_set_interface failed, rc %d", rc);
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return rc;
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}
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}
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sms_info("smsusb_probe %d",
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intf->cur_altsetting->desc.bInterfaceNumber);
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for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++)
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sms_info("endpoint %d %02x %02x %d", i,
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intf->cur_altsetting->endpoint[i].desc.bEndpointAddress,
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intf->cur_altsetting->endpoint[i].desc.bmAttributes,
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intf->cur_altsetting->endpoint[i].desc.wMaxPacketSize);
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if ((udev->actconfig->desc.bNumInterfaces == 2) &&
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(intf->cur_altsetting->desc.bInterfaceNumber == 0)) {
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sms_err("rom interface 0 is not used");
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return -ENODEV;
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}
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if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
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snprintf(devpath, sizeof(devpath), "usb\\%d-%s",
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udev->bus->busnum, udev->devpath);
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sms_info("stellar device was found.");
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return smsusb1_load_firmware(
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udev, smscore_registry_getmode(devpath),
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id->driver_info);
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}
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rc = smsusb_init_device(intf, id->driver_info);
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sms_info("rc %d", rc);
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return rc;
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}
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static void smsusb_disconnect(struct usb_interface *intf)
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{
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smsusb_term_device(intf);
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}
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static struct usb_driver smsusb_driver = {
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.name = "sms1xxx",
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.probe = smsusb_probe,
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.disconnect = smsusb_disconnect,
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.id_table = smsusb_id_table,
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};
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int smsusb_register(void)
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{
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int rc = usb_register(&smsusb_driver);
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if (rc)
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sms_err("usb_register failed. Error number %d", rc);
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sms_debug("");
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return rc;
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}
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void smsusb_unregister(void)
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{
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sms_debug("");
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/* Regular USB Cleanup */
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usb_deregister(&smsusb_driver);
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}
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