1 /* 2 * $Id: iforce-usb.c,v 1.1.1.1 2007/08/03 18:52:33 Exp $ 3 * 4 * Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz> 5 * Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com> 6 * 7 * USB/RS232 I-Force joysticks and wheels. 8 */ 9 10/* 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 24 * 25 * Should you need to contact me, the author, you can do so either by 26 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 27 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 28 */ 29 30#include "iforce.h" 31 32void iforce_usb_xmit(struct iforce *iforce) 33{ 34 int n, c; 35 unsigned long flags; 36 37 spin_lock_irqsave(&iforce->xmit_lock, flags); 38 39 if (iforce->xmit.head == iforce->xmit.tail) { 40 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 41 spin_unlock_irqrestore(&iforce->xmit_lock, flags); 42 return; 43 } 44 45 ((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail]; 46 XMIT_INC(iforce->xmit.tail, 1); 47 n = iforce->xmit.buf[iforce->xmit.tail]; 48 XMIT_INC(iforce->xmit.tail, 1); 49 50 iforce->out->transfer_buffer_length = n + 1; 51 iforce->out->dev = iforce->usbdev; 52 53 /* Copy rest of data then */ 54 c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE); 55 if (n < c) c=n; 56 57 memcpy(iforce->out->transfer_buffer + 1, 58 &iforce->xmit.buf[iforce->xmit.tail], 59 c); 60 if (n != c) { 61 memcpy(iforce->out->transfer_buffer + 1 + c, 62 &iforce->xmit.buf[0], 63 n-c); 64 } 65 XMIT_INC(iforce->xmit.tail, n); 66 67 if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) { 68 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 69 warn("usb_submit_urb failed %d\n", n); 70 } 71 72 /* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended. 73 * As long as the urb completion handler is not called, the transmiting 74 * is considered to be running */ 75 spin_unlock_irqrestore(&iforce->xmit_lock, flags); 76} 77 78static void iforce_usb_irq(struct urb *urb) 79{ 80 struct iforce *iforce = urb->context; 81 int status; 82 83 switch (urb->status) { 84 case 0: 85 /* success */ 86 break; 87 case -ECONNRESET: 88 case -ENOENT: 89 case -ESHUTDOWN: 90 /* this urb is terminated, clean up */ 91 dbg("%s - urb shutting down with status: %d", 92 __FUNCTION__, urb->status); 93 return; 94 default: 95 dbg("%s - urb has status of: %d", __FUNCTION__, urb->status); 96 goto exit; 97 } 98 99 iforce_process_packet(iforce, 100 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1); 101 102exit: 103 status = usb_submit_urb (urb, GFP_ATOMIC); 104 if (status) 105 err ("%s - usb_submit_urb failed with result %d", 106 __FUNCTION__, status); 107} 108 109static void iforce_usb_out(struct urb *urb) 110{ 111 struct iforce *iforce = urb->context; 112 113 if (urb->status) { 114 dbg("urb->status %d, exiting", urb->status); 115 return; 116 } 117 118 iforce_usb_xmit(iforce); 119 120 wake_up(&iforce->wait); 121} 122 123static void iforce_usb_ctrl(struct urb *urb) 124{ 125 struct iforce *iforce = urb->context; 126 if (urb->status) return; 127 iforce->ecmd = 0xff00 | urb->actual_length; 128 wake_up(&iforce->wait); 129} 130 131static int iforce_usb_probe(struct usb_interface *intf, 132 const struct usb_device_id *id) 133{ 134 struct usb_device *dev = interface_to_usbdev(intf); 135 struct usb_host_interface *interface; 136 struct usb_endpoint_descriptor *epirq, *epout; 137 struct iforce *iforce; 138 int err = -ENOMEM; 139 140 interface = intf->cur_altsetting; 141 142 epirq = &interface->endpoint[0].desc; 143 epout = &interface->endpoint[1].desc; 144 145 if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL))) 146 goto fail; 147 148 if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL))) 149 goto fail; 150 151 if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL))) 152 goto fail; 153 154 if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL))) 155 goto fail; 156 157 iforce->bus = IFORCE_USB; 158 iforce->usbdev = dev; 159 160 iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE; 161 iforce->cr.wIndex = 0; 162 iforce->cr.wLength = 16; 163 164 usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress), 165 iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval); 166 167 usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress), 168 iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval); 169 170 usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0), 171 (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce); 172 173 err = iforce_init_device(iforce); 174 if (err) 175 goto fail; 176 177 usb_set_intfdata(intf, iforce); 178 return 0; 179 180fail: 181 if (iforce) { 182 usb_free_urb(iforce->irq); 183 usb_free_urb(iforce->out); 184 usb_free_urb(iforce->ctrl); 185 kfree(iforce); 186 } 187 188 return err; 189} 190 191/* Called by iforce_delete() */ 192void iforce_usb_delete(struct iforce* iforce) 193{ 194 usb_kill_urb(iforce->irq); 195 usb_kill_urb(iforce->out); 196 usb_kill_urb(iforce->ctrl); 197 198 usb_free_urb(iforce->irq); 199 usb_free_urb(iforce->out); 200 usb_free_urb(iforce->ctrl); 201} 202 203static void iforce_usb_disconnect(struct usb_interface *intf) 204{ 205 struct iforce *iforce = usb_get_intfdata(intf); 206 int open = 0; 207 208 usb_set_intfdata(intf, NULL); 209 if (iforce) { 210 iforce->usbdev = NULL; 211 input_unregister_device(iforce->dev); 212 213 if (!open) { 214 iforce_delete_device(iforce); 215 kfree(iforce); 216 } 217 } 218} 219 220static struct usb_device_id iforce_usb_ids [] = { 221 { USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */ 222 { USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */ 223 { USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */ 224 { USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */ 225 { USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */ 226 { USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */ 227 { USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */ 228 { USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */ 229 { USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */ 230 { USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */ 231 { } /* Terminating entry */ 232}; 233 234MODULE_DEVICE_TABLE (usb, iforce_usb_ids); 235 236struct usb_driver iforce_usb_driver = { 237 .name = "iforce", 238 .probe = iforce_usb_probe, 239 .disconnect = iforce_usb_disconnect, 240 .id_table = iforce_usb_ids, 241}; 242