--- /dev/null
+/*
+ * 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@desy.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 len = 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,
+ val,
+ sizeof(u32),
+ B2C2_WAIT_FOR_OPERATION_RDW * HZ);
+
+ if (len != sizeof(u32)) {
+ err("error while %s dword from %d (%d).", read ? "reading" :
+ "writing", wAddress, wRegOffsPCI);
+ return -EIO;
+ }
+ return 0;
+}
+/*
+ * 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, len;
+ wIndex = page << 8;
+
+ 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);
+
+ len = usb_control_msg(fc_usb->udev, pipe,
+ req,
+ request_type,
+ wAddress,
+ wIndex,
+ pbBuffer,
+ buflen,
+ nWaitTime * HZ);
+
+ debug_dump(pbBuffer, len, deb_v8);
+ return len == buflen ? 0 : -EIO;
+}
+
+#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);
+}
+
+#if 0
+static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
+ flexcop_usb_utility_function_t func, u8 extra, u16 wIndex,
+ u16 buflen, u8 *pvBuffer)
+{
+ u16 wValue;
+ u8 request_type = (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR;
+ int nWaitTime = 2,
+ pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN, len;
+ wValue = (func << 8) | extra;
+
+ len = usb_control_msg(fc_usb->udev,pipe,
+ B2C2_USB_UTILITY,
+ request_type,
+ wValue,
+ wIndex,
+ pvBuffer,
+ buflen,
+ nWaitTime * HZ);
+ return len == buflen ? 0 : -EIO;
+}
+#endif
+
+/* 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,len;
+ u8 request_type = USB_TYPE_VENDOR;
+
+ 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);
+
+ len = usb_control_msg(fc_usb->udev,pipe,
+ req,
+ request_type,
+ wValue,
+ wIndex,
+ buf,
+ buflen,
+ nWaitTime * HZ);
+ return len == buflen ? 0 : -EREMOTEIO;
+}
+
+/* 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;
+
+ 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");
Code Review / kvmfornfv.git / blobdiff