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|
/*
* Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
* flexcop-usb.c - covers the USB part
* see flexcop.c for copyright information
*/
#define FC_LOG_PREFIX "flexcop_usb"
#include "flexcop-usb.h"
#include "flexcop-common.h"
/* Version information */
#define DRIVER_VERSION "0.1"
#define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver"
#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de>"
/* debug */
#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
#define dprintk(level,args...) \
do { if ((debug & level)) printk(args); } while (0)
#define debug_dump(b, l, method) do {\
int i; \
for (i = 0; i < l; i++) \
method("%02x ", b[i]); \
method("\n"); \
} while (0)
#define DEBSTATUS ""
#else
#define dprintk(level, args...)
#define debug_dump(b, l, method)
#define DEBSTATUS " (debugging is not enabled)"
#endif
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,ctrl=4,i2c=8,v8mem=16 (or-able))." DEBSTATUS);
#undef DEBSTATUS
#define deb_info(args...) dprintk(0x01, args)
#define deb_ts(args...) dprintk(0x02, args)
#define deb_ctrl(args...) dprintk(0x04, args)
#define deb_i2c(args...) dprintk(0x08, args)
#define deb_v8(args...) dprintk(0x10, args)
/* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
* in the IBI address, to make the V8 code simpler.
* PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (the six bits used)
* in general: 0000 0HHH 000L LL00
* IBI ADDRESS FORMAT: RHHH BLLL
*
* where R is the read(1)/write(0) bit, B is the busy bit
* and HHH and LLL are the two sets of three bits from the PCI address.
*/
#define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) \
(((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
#define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) \
(((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
/*
* DKT 020228
* - forget about this VENDOR_BUFFER_SIZE, read and write register
* deal with DWORD or 4 bytes, that should be should from now on
* - from now on, we don't support anything older than firm 1.00
* I eliminated the write register as a 2 trip of writing hi word and lo word
* and force this to write only 4 bytes at a time.
* NOTE: this should work with all the firmware from 1.00 and newer
*/
static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
{
struct flexcop_usb *fc_usb = fc->bus_specific;
u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) |
(read ? 0x80 : 0);
int ret;
mutex_lock(&fc_usb->data_mutex);
if (!read)
memcpy(fc_usb->data, val, sizeof(*val));
ret = usb_control_msg(fc_usb->udev,
read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
request,
request_type, /* 0xc0 read or 0x40 write */
wAddress,
0,
fc_usb->data,
sizeof(u32),
B2C2_WAIT_FOR_OPERATION_RDW * HZ);
if (ret != sizeof(u32)) {
err("error while %s dword from %d (%d).", read ? "reading" :
"writing", wAddress, wRegOffsPCI);
if (ret >= 0)
ret = -EIO;
}
if (read && ret >= 0)
memcpy(val, fc_usb->data, sizeof(*val));
mutex_unlock(&fc_usb->data_mutex);
return ret;
}
/*
* DKT 010817 - add support for V8 memory read/write and flash update
*/
static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
flexcop_usb_request_t req, u8 page, u16 wAddress,
u8 *pbBuffer, u32 buflen)
{
u8 request_type = USB_TYPE_VENDOR;
u16 wIndex;
int nWaitTime, pipe, ret;
wIndex = page << 8;
if (buflen > sizeof(fc_usb->data)) {
err("Buffer size bigger than max URB control message\n");
return -EIO;
}
switch (req) {
case B2C2_USB_READ_V8_MEM:
nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
request_type |= USB_DIR_IN;
pipe = B2C2_USB_CTRL_PIPE_IN;
break;
case B2C2_USB_WRITE_V8_MEM:
wIndex |= pbBuffer[0];
request_type |= USB_DIR_OUT;
nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
pipe = B2C2_USB_CTRL_PIPE_OUT;
break;
case B2C2_USB_FLASH_BLOCK:
request_type |= USB_DIR_OUT;
nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
pipe = B2C2_USB_CTRL_PIPE_OUT;
break;
default:
deb_info("unsupported request for v8_mem_req %x.\n", req);
return -EINVAL;
}
deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n", request_type, req,
wAddress, wIndex, buflen);
mutex_lock(&fc_usb->data_mutex);
if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
memcpy(fc_usb->data, pbBuffer, buflen);
ret = usb_control_msg(fc_usb->udev, pipe,
req,
request_type,
wAddress,
wIndex,
fc_usb->data,
buflen,
nWaitTime * HZ);
if (ret != buflen)
ret = -EIO;
if (ret >= 0) {
ret = 0;
if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
memcpy(pbBuffer, fc_usb->data, buflen);
}
mutex_unlock(&fc_usb->data_mutex);
debug_dump(pbBuffer, ret, deb_v8);
return ret;
}
#define bytes_left_to_read_on_page(paddr,buflen) \
((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,
flexcop_usb_request_t req, flexcop_usb_mem_page_t page_start,
u32 addr, int extended, u8 *buf, u32 len)
{
int i,ret = 0;
u16 wMax;
u32 pagechunk = 0;
switch(req) {
case B2C2_USB_READ_V8_MEM:
wMax = USB_MEM_READ_MAX;
break;
case B2C2_USB_WRITE_V8_MEM:
wMax = USB_MEM_WRITE_MAX;
break;
case B2C2_USB_FLASH_BLOCK:
wMax = USB_FLASH_MAX;
break;
default:
return -EINVAL;
break;
}
for (i = 0; i < len;) {
pagechunk =
wMax < bytes_left_to_read_on_page(addr, len) ?
wMax :
bytes_left_to_read_on_page(addr, len);
deb_info("%x\n",
(addr & V8_MEMORY_PAGE_MASK) |
(V8_MEMORY_EXTENDED*extended));
ret = flexcop_usb_v8_memory_req(fc_usb, req,
page_start + (addr / V8_MEMORY_PAGE_SIZE),
(addr & V8_MEMORY_PAGE_MASK) |
(V8_MEMORY_EXTENDED*extended),
&buf[i], pagechunk);
if (ret < 0)
return ret;
addr += pagechunk;
len -= pagechunk;
}
return 0;
}
static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
{
return flexcop_usb_memory_req(fc->bus_specific, B2C2_USB_READ_V8_MEM,
V8_MEMORY_PAGE_FLASH, 0x1f010, 1,
fc->dvb_adapter.proposed_mac, 6);
}
/* usb i2c stuff */
static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
{
struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
u16 wValue, wIndex;
int nWaitTime, pipe, ret;
u8 request_type = USB_TYPE_VENDOR;
if (buflen > sizeof(fc_usb->data)) {
err("Buffer size bigger than max URB control message\n");
return -EIO;
}
switch (func) {
case USB_FUNC_I2C_WRITE:
case USB_FUNC_I2C_MULTIWRITE:
case USB_FUNC_I2C_REPEATWRITE:
/* DKT 020208 - add this to support special case of DiSEqC */
case USB_FUNC_I2C_CHECKWRITE:
pipe = B2C2_USB_CTRL_PIPE_OUT;
nWaitTime = 2;
request_type |= USB_DIR_OUT;
break;
case USB_FUNC_I2C_READ:
case USB_FUNC_I2C_REPEATREAD:
pipe = B2C2_USB_CTRL_PIPE_IN;
nWaitTime = 2;
request_type |= USB_DIR_IN;
break;
default:
deb_info("unsupported function for i2c_req %x\n", func);
return -EINVAL;
}
wValue = (func << 8) | (i2c->port << 4);
wIndex = (chipaddr << 8 ) | addr;
deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",
func, request_type, req,
wValue & 0xff, wValue >> 8,
wIndex & 0xff, wIndex >> 8);
mutex_lock(&fc_usb->data_mutex);
if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
memcpy(fc_usb->data, buf, buflen);
ret = usb_control_msg(fc_usb->udev, pipe,
req,
request_type,
wValue,
wIndex,
fc_usb->data,
buflen,
nWaitTime * HZ);
if (ret != buflen)
ret = -EIO;
if (ret >= 0) {
ret = 0;
if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
memcpy(buf, fc_usb->data, buflen);
}
mutex_unlock(&fc_usb->data_mutex);
return 0;
}
/* actual bus specific access functions,
make sure prototype are/will be equal to pci */
static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc,
flexcop_ibi_register reg)
{
flexcop_ibi_value val;
val.raw = 0;
flexcop_usb_readwrite_dw(fc, reg, &val.raw, 1);
return val;
}
static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc,
flexcop_ibi_register reg, flexcop_ibi_value val)
{
return flexcop_usb_readwrite_dw(fc, reg, &val.raw, 0);
}
static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
{
if (op == FC_READ)
return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
else
return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
}
static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb,
u8 *buffer, int buffer_length)
{
u8 *b;
int l;
deb_ts("tmp_buffer_length=%d, buffer_length=%d\n",
fc_usb->tmp_buffer_length, buffer_length);
if (fc_usb->tmp_buffer_length > 0) {
memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer,
buffer_length);
fc_usb->tmp_buffer_length += buffer_length;
b = fc_usb->tmp_buffer;
l = fc_usb->tmp_buffer_length;
} else {
b=buffer;
l=buffer_length;
}
while (l >= 190) {
if (*b == 0xff) {
switch (*(b+1) & 0x03) {
case 0x01: /* media packet */
if (*(b+2) == 0x47)
flexcop_pass_dmx_packets(
fc_usb->fc_dev, b+2, 1);
else
deb_ts("not ts packet %*ph\n", 4, b+2);
b += 190;
l -= 190;
break;
default:
deb_ts("wrong packet type\n");
l = 0;
break;
}
} else {
deb_ts("wrong header\n");
l = 0;
}
}
if (l>0)
memcpy(fc_usb->tmp_buffer, b, l);
fc_usb->tmp_buffer_length = l;
}
static void flexcop_usb_urb_complete(struct urb *urb)
{
struct flexcop_usb *fc_usb = urb->context;
int i;
if (urb->actual_length > 0)
deb_ts("urb completed, bufsize: %d actlen; %d\n",
urb->transfer_buffer_length, urb->actual_length);
for (i = 0; i < urb->number_of_packets; i++) {
if (urb->iso_frame_desc[i].status < 0) {
err("iso frame descriptor %d has an error: %d\n", i,
urb->iso_frame_desc[i].status);
} else
if (urb->iso_frame_desc[i].actual_length > 0) {
deb_ts("passed %d bytes to the demux\n",
urb->iso_frame_desc[i].actual_length);
flexcop_usb_process_frame(fc_usb,
urb->transfer_buffer +
urb->iso_frame_desc[i].offset,
urb->iso_frame_desc[i].actual_length);
}
urb->iso_frame_desc[i].status = 0;
urb->iso_frame_desc[i].actual_length = 0;
}
usb_submit_urb(urb,GFP_ATOMIC);
}
static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
{
/* submit/kill iso packets */
return 0;
}
static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
{
int i;
for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
if (fc_usb->iso_urb[i] != NULL) {
deb_ts("unlinking/killing urb no. %d\n",i);
usb_kill_urb(fc_usb->iso_urb[i]);
usb_free_urb(fc_usb->iso_urb[i]);
}
if (fc_usb->iso_buffer != NULL)
usb_free_coherent(fc_usb->udev,
fc_usb->buffer_size, fc_usb->iso_buffer,
fc_usb->dma_addr);
}
static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
{
u16 frame_size = le16_to_cpu(
fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO *
frame_size, i, j, ret;
int buffer_offset = 0;
deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
B2C2_USB_NUM_ISO_URB,
B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize);
fc_usb->iso_buffer = usb_alloc_coherent(fc_usb->udev,
bufsize, GFP_KERNEL, &fc_usb->dma_addr);
if (fc_usb->iso_buffer == NULL)
return -ENOMEM;
memset(fc_usb->iso_buffer, 0, bufsize);
fc_usb->buffer_size = bufsize;
/* creating iso urbs */
for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,
GFP_ATOMIC);
if (fc_usb->iso_urb[i] == NULL) {
ret = -ENOMEM;
goto urb_error;
}
}
/* initialising and submitting iso urbs */
for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
int frame_offset = 0;
struct urb *urb = fc_usb->iso_urb[i];
deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",
i, buffer_offset);
urb->dev = fc_usb->udev;
urb->context = fc_usb;
urb->complete = flexcop_usb_urb_complete;
urb->pipe = B2C2_USB_DATA_PIPE;
urb->transfer_flags = URB_ISO_ASAP;
urb->interval = 1;
urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",
i, j, frame_offset);
urb->iso_frame_desc[j].offset = frame_offset;
urb->iso_frame_desc[j].length = frame_size;
frame_offset += frame_size;
}
if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
err("submitting urb %d failed with %d.", i, ret);
goto urb_error;
}
deb_ts("submitted urb no. %d.\n",i);
}
/* SRAM */
flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA |
FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI,
FC_SRAM_DEST_TARGET_WAN_USB);
flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS);
flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1);
return 0;
urb_error:
flexcop_usb_transfer_exit(fc_usb);
return ret;
}
static int flexcop_usb_init(struct flexcop_usb *fc_usb)
{
/* use the alternate setting with the larges buffer */
usb_set_interface(fc_usb->udev,0,1);
switch (fc_usb->udev->speed) {
case USB_SPEED_LOW:
err("cannot handle USB speed because it is too slow.");
return -ENODEV;
break;
case USB_SPEED_FULL:
info("running at FULL speed.");
break;
case USB_SPEED_HIGH:
info("running at HIGH speed.");
break;
case USB_SPEED_UNKNOWN: /* fall through */
default:
err("cannot handle USB speed because it is unknown.");
return -ENODEV;
}
usb_set_intfdata(fc_usb->uintf, fc_usb);
return 0;
}
static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
{
usb_set_intfdata(fc_usb->uintf, NULL);
}
static int flexcop_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct flexcop_usb *fc_usb = NULL;
struct flexcop_device *fc = NULL;
int ret;
if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
err("out of memory\n");
return -ENOMEM;
}
/* general flexcop init */
fc_usb = fc->bus_specific;
fc_usb->fc_dev = fc;
mutex_init(&fc_usb->data_mutex);
fc->read_ibi_reg = flexcop_usb_read_ibi_reg;
fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
fc->i2c_request = flexcop_usb_i2c_request;
fc->get_mac_addr = flexcop_usb_get_mac_addr;
fc->stream_control = flexcop_usb_stream_control;
fc->pid_filtering = 1;
fc->bus_type = FC_USB;
fc->dev = &udev->dev;
fc->owner = THIS_MODULE;
/* bus specific part */
fc_usb->udev = udev;
fc_usb->uintf = intf;
if ((ret = flexcop_usb_init(fc_usb)) != 0)
goto err_kfree;
/* init flexcop */
if ((ret = flexcop_device_initialize(fc)) != 0)
goto err_usb_exit;
/* xfer init */
if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
goto err_fc_exit;
info("%s successfully initialized and connected.", DRIVER_NAME);
return 0;
err_fc_exit:
flexcop_device_exit(fc);
err_usb_exit:
flexcop_usb_exit(fc_usb);
err_kfree:
flexcop_device_kfree(fc);
return ret;
}
static void flexcop_usb_disconnect(struct usb_interface *intf)
{
struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
flexcop_usb_transfer_exit(fc_usb);
flexcop_device_exit(fc_usb->fc_dev);
flexcop_usb_exit(fc_usb);
flexcop_device_kfree(fc_usb->fc_dev);
info("%s successfully deinitialized and disconnected.", DRIVER_NAME);
}
static struct usb_device_id flexcop_usb_table [] = {
{ USB_DEVICE(0x0af7, 0x0101) },
{ }
};
MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver flexcop_usb_driver = {
.name = "b2c2_flexcop_usb",
.probe = flexcop_usb_probe,
.disconnect = flexcop_usb_disconnect,
.id_table = flexcop_usb_table,
};
module_usb_driver(flexcop_usb_driver);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_NAME);
MODULE_LICENSE("GPL");
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