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|
/*
* Driver for the Siano SMS1xxx USB dongle
*
* author: Anatoly Greenblat
*
* Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include "smscoreapi.h"
#include "sms-cards.h"
#define USB1_BUFFER_SIZE 0x1000
#define USB2_BUFFER_SIZE 0x4000
#define MAX_BUFFERS 50
#define MAX_URBS 10
struct smsusb_device_t;
struct smsusb_urb_t {
struct smscore_buffer_t *cb;
struct smsusb_device_t *dev;
struct urb urb;
};
struct smsusb_device_t {
struct usb_device *udev;
struct smscore_device_t *coredev;
struct smsusb_urb_t surbs[MAX_URBS];
int response_alignment;
int buffer_size;
};
static int smsusb_submit_urb(struct smsusb_device_t *dev,
struct smsusb_urb_t *surb);
static void smsusb_onresponse(struct urb *urb)
{
struct smsusb_urb_t *surb = (struct smsusb_urb_t *) urb->context;
struct smsusb_device_t *dev = surb->dev;
if (urb->status < 0) {
sms_err("error, urb status %d, %d bytes",
urb->status, urb->actual_length);
return;
}
if (urb->actual_length > 0) {
struct SmsMsgHdr_ST *phdr = (struct SmsMsgHdr_ST *) surb->cb->p;
if (urb->actual_length >= phdr->msgLength) {
surb->cb->size = phdr->msgLength;
if (dev->response_alignment &&
(phdr->msgFlags & MSG_HDR_FLAG_SPLIT_MSG)) {
surb->cb->offset =
dev->response_alignment +
((phdr->msgFlags >> 8) & 3);
/* sanity check */
if (((int) phdr->msgLength +
surb->cb->offset) > urb->actual_length) {
sms_err("invalid response "
"msglen %d offset %d "
"size %d",
phdr->msgLength,
surb->cb->offset,
urb->actual_length);
goto exit_and_resubmit;
}
/* move buffer pointer and
* copy header to its new location */
memcpy((char *) phdr + surb->cb->offset,
phdr, sizeof(struct SmsMsgHdr_ST));
} else
surb->cb->offset = 0;
smscore_onresponse(dev->coredev, surb->cb);
surb->cb = NULL;
} else {
sms_err("invalid response "
"msglen %d actual %d",
phdr->msgLength, urb->actual_length);
}
}
exit_and_resubmit:
smsusb_submit_urb(dev, surb);
}
static int smsusb_submit_urb(struct smsusb_device_t *dev,
struct smsusb_urb_t *surb)
{
if (!surb->cb) {
surb->cb = smscore_getbuffer(dev->coredev);
if (!surb->cb) {
sms_err("smscore_getbuffer(...) returned NULL");
return -ENOMEM;
}
}
usb_fill_bulk_urb(
&surb->urb,
dev->udev,
usb_rcvbulkpipe(dev->udev, 0x81),
surb->cb->p,
dev->buffer_size,
smsusb_onresponse,
surb
);
surb->urb.transfer_dma = surb->cb->phys;
surb->urb.transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
return usb_submit_urb(&surb->urb, GFP_ATOMIC);
}
static void smsusb_stop_streaming(struct smsusb_device_t *dev)
{
int i;
for (i = 0; i < MAX_URBS; i++) {
usb_kill_urb(&dev->surbs[i].urb);
if (dev->surbs[i].cb) {
smscore_putbuffer(dev->coredev, dev->surbs[i].cb);
dev->surbs[i].cb = NULL;
}
}
}
static int smsusb_start_streaming(struct smsusb_device_t *dev)
{
int i, rc;
for (i = 0; i < MAX_URBS; i++) {
rc = smsusb_submit_urb(dev, &dev->surbs[i]);
if (rc < 0) {
sms_err("smsusb_submit_urb(...) failed");
smsusb_stop_streaming(dev);
break;
}
}
return rc;
}
static int smsusb_sendrequest(void *context, void *buffer, size_t size)
{
struct smsusb_device_t *dev = (struct smsusb_device_t *) context;
int dummy;
return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
buffer, size, &dummy, 1000);
}
static char *smsusb1_fw_lkup[] = {
"dvbt_stellar_usb.inp",
"dvbh_stellar_usb.inp",
"tdmb_stellar_usb.inp",
"none",
"dvbt_bda_stellar_usb.inp",
};
static inline char *sms_get_fw_name(int mode, int board_id)
{
char **fw = sms_get_board(board_id)->fw;
return (fw && fw[mode]) ? fw[mode] : smsusb1_fw_lkup[mode];
}
static int smsusb1_load_firmware(struct usb_device *udev, int id, int board_id)
{
const struct firmware *fw;
u8 *fw_buffer;
int rc, dummy;
char *fw_filename;
if (id < DEVICE_MODE_DVBT || id > DEVICE_MODE_DVBT_BDA) {
sms_err("invalid firmware id specified %d", id);
return -EINVAL;
}
fw_filename = sms_get_fw_name(id, board_id);
rc = request_firmware(&fw, fw_filename, &udev->dev);
if (rc < 0) {
sms_warn("failed to open \"%s\" mode %d, "
"trying again with default firmware", fw_filename, id);
fw_filename = smsusb1_fw_lkup[id];
rc = request_firmware(&fw, fw_filename, &udev->dev);
if (rc < 0) {
sms_warn("failed to open \"%s\" mode %d",
fw_filename, id);
return rc;
}
}
fw_buffer = kmalloc(fw->size, GFP_KERNEL);
if (fw_buffer) {
memcpy(fw_buffer, fw->data, fw->size);
rc = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 2),
fw_buffer, fw->size, &dummy, 1000);
sms_info("sent %zd(%d) bytes, rc %d", fw->size, dummy, rc);
kfree(fw_buffer);
} else {
sms_err("failed to allocate firmware buffer");
rc = -ENOMEM;
}
sms_info("read FW %s, size=%zd", fw_filename, fw->size);
release_firmware(fw);
return rc;
}
static void smsusb1_detectmode(void *context, int *mode)
{
char *product_string =
((struct smsusb_device_t *) context)->udev->product;
*mode = DEVICE_MODE_NONE;
if (!product_string) {
product_string = "none";
sms_err("product string not found");
} else if (strstr(product_string, "DVBH"))
*mode = 1;
else if (strstr(product_string, "BDA"))
*mode = 4;
else if<
|