drivers/staging/ft1000/ft1000-usb/ft1000_usb.c

   1 /*=====================================================
   2  * CopyRight (C) 2007 Qualcomm Inc. All Rights Reserved.
   3  *
   4  *
   5  * This file is part of Express Card USB Driver
   6  *
   7  * $Id:
   8  *====================================================
   9  */
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/usb.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/firmware.h>
  16 #include "ft1000_usb.h"
  17
  18 #include <linux/kthread.h>
  19
  20 MODULE_DESCRIPTION("FT1000 EXPRESS CARD DRIVER");
  21 MODULE_LICENSE("Dual MPL/GPL");
  22 MODULE_SUPPORTED_DEVICE("QFT FT1000 Express Cards");
  23
  24 void *pFileStart;
  25 size_t FileLength;
  26
  27 #define VENDOR_ID 0x1291        /* Qualcomm vendor id */
  28 #define PRODUCT_ID 0x11         /* fake product id */
  29
  30 /* table of devices that work with this driver */
  31 static struct usb_device_id id_table[] = {
  32         {USB_DEVICE(VENDOR_ID, PRODUCT_ID)},
  33         {},
  34 };
  35
  36 MODULE_DEVICE_TABLE(usb, id_table);
  37
  38 static bool gPollingfailed;
  39 static int ft1000_poll_thread(void *arg)
  40 {
  41         int ret;
  42
  43         while (!kthread_should_stop()) {
  44                 usleep_range(10000, 11000);
  45                 if (!gPollingfailed) {
  46                         ret = ft1000_poll(arg);
  47                         if (ret != 0) {
  48                                 DEBUG("ft1000_poll_thread: polling failed\n");
  49                                 gPollingfailed = true;
  50                         }
  51                 }
  52         }
  53         return 0;
  54 }
  55
  56 static int ft1000_probe(struct usb_interface *interface,
  57                         const struct usb_device_id *id)
  58 {
  59         struct usb_host_interface *iface_desc;
  60         struct usb_endpoint_descriptor *endpoint;
  61         struct usb_device *dev;
  62         unsigned numaltsetting;
  63         int i, ret = 0, size;
  64
  65         struct ft1000_usb *ft1000dev;
  66         struct ft1000_info *pft1000info = NULL;
  67         const struct firmware *dsp_fw;
  68
  69         ft1000dev = kzalloc(sizeof(struct ft1000_usb), GFP_KERNEL);
  70         if (!ft1000dev)
  71                 return -ENOMEM;
  72
  73         dev = interface_to_usbdev(interface);
  74         DEBUG("ft1000_probe: usb device descriptor info:\n");
  75         DEBUG("ft1000_probe: number of configuration is %d\n",
  76               dev->descriptor.bNumConfigurations);
  77
  78         ft1000dev->dev = dev;
  79         ft1000dev->status = 0;
  80         ft1000dev->net = NULL;
  81         ft1000dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
  82         ft1000dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
  83         if (!ft1000dev->tx_urb || !ft1000dev->rx_urb) {
  84                 ret = -ENOMEM;
  85                 goto err_fw;
  86         }
  87
  88         DEBUG("ft1000_probe is called\n");
  89         numaltsetting = interface->num_altsetting;
  90         DEBUG("ft1000_probe: number of alt settings is :%d\n", numaltsetting);
  91         iface_desc = interface->cur_altsetting;
  92         DEBUG("ft1000_probe: number of endpoints is %d\n",
  93               iface_desc->desc.bNumEndpoints);
  94         DEBUG("ft1000_probe: descriptor type is %d\n",
  95               iface_desc->desc.bDescriptorType);
  96         DEBUG("ft1000_probe: interface number is %d\n",
  97               iface_desc->desc.bInterfaceNumber);
  98         DEBUG("ft1000_probe: alternatesetting is %d\n",
  99               iface_desc->desc.bAlternateSetting);
 100         DEBUG("ft1000_probe: interface class is %d\n",
 101               iface_desc->desc.bInterfaceClass);
 102         DEBUG("ft1000_probe: control endpoint info:\n");
 103         DEBUG("ft1000_probe: descriptor0 type -- %d\n",
 104               iface_desc->endpoint[0].desc.bmAttributes);
 105         DEBUG("ft1000_probe: descriptor1 type -- %d\n",
 106               iface_desc->endpoint[1].desc.bmAttributes);
 107         DEBUG("ft1000_probe: descriptor2 type -- %d\n",
 108               iface_desc->endpoint[2].desc.bmAttributes);
 109
 110         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
 111                 endpoint =
 112                         (struct usb_endpoint_descriptor *)&iface_desc->
 113                         endpoint[i].desc;
 114                 DEBUG("endpoint %d\n", i);
 115                 DEBUG("bEndpointAddress=%x, bmAttributes=%x\n",
 116                       endpoint->bEndpointAddress, endpoint->bmAttributes);
 117                 if ((endpoint->bEndpointAddress & USB_DIR_IN)
 118                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 119                         USB_ENDPOINT_XFER_BULK)) {
 120                         ft1000dev->bulk_in_endpointAddr =
 121                                 endpoint->bEndpointAddress;
 122                         DEBUG("ft1000_probe: in: %d\n",
 123                               endpoint->bEndpointAddress);
 124                 }
 125
 126                 if (!(endpoint->bEndpointAddress & USB_DIR_IN)
 127                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 128                         USB_ENDPOINT_XFER_BULK)) {
 129                         ft1000dev->bulk_out_endpointAddr =
 130                                 endpoint->bEndpointAddress;
 131                         DEBUG("ft1000_probe: out: %d\n",
 132                               endpoint->bEndpointAddress);
 133                 }
 134         }
 135
 136         DEBUG("bulk_in=%d, bulk_out=%d\n", ft1000dev->bulk_in_endpointAddr,
 137               ft1000dev->bulk_out_endpointAddr);
 138
 139         ret = request_firmware(&dsp_fw, "ft3000.img", &dev->dev);
 140         if (ret < 0) {
 141                 pr_err("Error request_firmware().\n");
 142                 goto err_fw;
 143         }
 144
 145         size = max_t(uint, dsp_fw->size, 4096);
 146         pFileStart = kmalloc(size, GFP_KERNEL);
 147
 148         if (!pFileStart) {
 149                 release_firmware(dsp_fw);
 150                 ret = -ENOMEM;
 151                 goto err_fw;
 152         }
 153
 154         memcpy(pFileStart, dsp_fw->data, dsp_fw->size);
 155         FileLength = dsp_fw->size;
 156         release_firmware(dsp_fw);
 157
 158         DEBUG("ft1000_probe: start downloading dsp image...\n");
 159
 160         ret = init_ft1000_netdev(ft1000dev);
 161         if (ret)
 162                 goto err_load;
 163
 164         pft1000info = netdev_priv(ft1000dev->net);
 165
 166         DEBUG("In probe: pft1000info=%p\n", pft1000info);
 167         ret = dsp_reload(ft1000dev);
 168         if (ret) {
 169                 pr_err("Problem with DSP image loading\n");
 170                 goto err_load;
 171         }
 172
 173         gPollingfailed = false;
 174         ft1000dev->pPollThread =
 175                 kthread_run(ft1000_poll_thread, ft1000dev, "ft1000_poll");
 176
 177         if (IS_ERR(ft1000dev->pPollThread)) {
 178                 ret = PTR_ERR(ft1000dev->pPollThread);
 179                 goto err_load;
 180         }
 181
 182         msleep(500);
 183
 184         while (!pft1000info->CardReady) {
 185                 if (gPollingfailed) {
 186                         ret = -EIO;
 187                         goto err_thread;
 188                 }
 189                 msleep(100);
 190                 DEBUG("ft1000_probe::Waiting for Card Ready\n");
 191         }
 192
 193         DEBUG("ft1000_probe::Card Ready!!!! Registering network device\n");
 194
 195         ret = reg_ft1000_netdev(ft1000dev, interface);
 196         if (ret)
 197                 goto err_thread;
 198
 199         ft1000dev->NetDevRegDone = 1;
 200
 201         return 0;
 202
 203 err_thread:
 204         kthread_stop(ft1000dev->pPollThread);
 205 err_load:
 206         kfree(pFileStart);
 207 err_fw:
 208         usb_free_urb(ft1000dev->rx_urb);
 209         usb_free_urb(ft1000dev->tx_urb);
 210         kfree(ft1000dev);
 211         return ret;
 212 }
 213
 214 static void ft1000_disconnect(struct usb_interface *interface)
 215 {
 216         struct ft1000_info *pft1000info;
 217         struct ft1000_usb *ft1000dev;
 218
 219         DEBUG("ft1000_disconnect is called\n");
 220
 221         pft1000info = (struct ft1000_info *)usb_get_intfdata(interface);
 222         DEBUG("In disconnect pft1000info=%p\n", pft1000info);
 223
 224         if (pft1000info) {
 225                 ft1000dev = pft1000info->priv;
 226                 if (ft1000dev->pPollThread)
 227                         kthread_stop(ft1000dev->pPollThread);
 228
 229                 DEBUG("ft1000_disconnect: threads are terminated\n");
 230
 231                 if (ft1000dev->net) {
 232                         DEBUG("ft1000_disconnect: destroy char driver\n");
 233                         ft1000_destroy_dev(ft1000dev->net);
 234                         unregister_netdev(ft1000dev->net);
 235                         DEBUG
 236                                 ("ft1000_disconnect: network device unregistered\n");
 237                         free_netdev(ft1000dev->net);
 238
 239                 }
 240
 241                 usb_free_urb(ft1000dev->rx_urb);
 242                 usb_free_urb(ft1000dev->tx_urb);
 243
 244                 DEBUG("ft1000_disconnect: urb freed\n");
 245
 246                 kfree(ft1000dev);
 247         }
 248         kfree(pFileStart);
 249 }
 250
 251 static struct usb_driver ft1000_usb_driver = {
 252         .name = "ft1000usb",
 253         .probe = ft1000_probe,
 254         .disconnect = ft1000_disconnect,
 255         .id_table = id_table,
 256 };
 257
 258 module_usb_driver(ft1000_usb_driver);