1 /* 2 * Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz> 3 * Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com> 4 * 5 * USB/RS232 I-Force joysticks and wheels. 6 */ 7 8 /* 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 * Should you need to contact me, the author, you can do so either by 24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 26 */ 27 28 #include "iforce.h" 29 30 void iforce_usb_xmit(struct iforce *iforce) 31 { 32 int n, c; 33 unsigned long flags; 34 35 spin_lock_irqsave(&iforce->xmit_lock, flags); 36 37 if (iforce->xmit.head == iforce->xmit.tail) { 38 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 39 spin_unlock_irqrestore(&iforce->xmit_lock, flags); 40 return; 41 } 42 43 ((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail]; 44 XMIT_INC(iforce->xmit.tail, 1); 45 n = iforce->xmit.buf[iforce->xmit.tail]; 46 XMIT_INC(iforce->xmit.tail, 1); 47 48 iforce->out->transfer_buffer_length = n + 1; 49 iforce->out->dev = iforce->usbdev; 50 51 /* Copy rest of data then */ 52 c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE); 53 if (n < c) c=n; 54 55 memcpy(iforce->out->transfer_buffer + 1, 56 &iforce->xmit.buf[iforce->xmit.tail], 57 c); 58 if (n != c) { 59 memcpy(iforce->out->transfer_buffer + 1 + c, 60 &iforce->xmit.buf[0], 61 n-c); 62 } 63 XMIT_INC(iforce->xmit.tail, n); 64 65 if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) { 66 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 67 dev_warn(&iforce->intf->dev, "usb_submit_urb failed %d\n", n); 68 } 69 70 /* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended. 71 * As long as the urb completion handler is not called, the transmiting 72 * is considered to be running */ 73 spin_unlock_irqrestore(&iforce->xmit_lock, flags); 74 } 75 76 static void iforce_usb_irq(struct urb *urb) 77 { 78 struct iforce *iforce = urb->context; 79 struct device *dev = &iforce->intf->dev; 80 int status; 81 82 switch (urb->status) { 83 case 0: 84 /* success */ 85 break; 86 case -ECONNRESET: 87 case -ENOENT: 88 case -ESHUTDOWN: 89 /* this urb is terminated, clean up */ 90 dev_dbg(dev, "%s - urb shutting down with status: %d\n", 91 __func__, urb->status); 92 return; 93 default: 94 dev_dbg(dev, "%s - urb has status of: %d\n", 95 __func__, urb->status); 96 goto exit; 97 } 98 99 iforce_process_packet(iforce, 100 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1); 101 102 exit: 103 status = usb_submit_urb (urb, GFP_ATOMIC); 104 if (status) 105 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", 106 __func__, status); 107 } 108 109 static void iforce_usb_out(struct urb *urb) 110 { 111 struct iforce *iforce = urb->context; 112 113 if (urb->status) { 114 clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags); 115 dev_dbg(&iforce->intf->dev, "urb->status %d, exiting\n", 116 urb->status); 117 return; 118 } 119 120 iforce_usb_xmit(iforce); 121 122 wake_up(&iforce->wait); 123 } 124 125 static void iforce_usb_ctrl(struct urb *urb) 126 { 127 struct iforce *iforce = urb->context; 128 if (urb->status) return; 129 iforce->ecmd = 0xff00 | urb->actual_length; 130 wake_up(&iforce->wait); 131 } 132 133 static int iforce_usb_probe(struct usb_interface *intf, 134 const struct usb_device_id *id) 135 { 136 struct usb_device *dev = interface_to_usbdev(intf); 137 struct usb_host_interface *interface; 138 struct usb_endpoint_descriptor *epirq, *epout; 139 struct iforce *iforce; 140 int err = -ENOMEM; 141 142 interface = intf->cur_altsetting; 143 144 if (interface->desc.bNumEndpoints < 2) 145 return -ENODEV; 146 147 epirq = &interface->endpoint[0].desc; 148 epout = &interface->endpoint[1].desc; 149 150 if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL))) 151 goto fail; 152 153 if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL))) 154 goto fail; 155 156 if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL))) 157 goto fail; 158 159 if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL))) 160 goto fail; 161 162 iforce->bus = IFORCE_USB; 163 iforce->usbdev = dev; 164 iforce->intf = intf; 165 166 iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE; 167 iforce->cr.wIndex = 0; 168 iforce->cr.wLength = cpu_to_le16(16); 169 170 usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress), 171 iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval); 172 173 usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress), 174 iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval); 175 176 usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0), 177 (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce); 178 179 err = iforce_init_device(iforce); 180 if (err) 181 goto fail; 182 183 usb_set_intfdata(intf, iforce); 184 return 0; 185 186 fail: 187 if (iforce) { 188 usb_free_urb(iforce->irq); 189 usb_free_urb(iforce->out); 190 usb_free_urb(iforce->ctrl); 191 kfree(iforce); 192 } 193 194 return err; 195 } 196 197 static void iforce_usb_disconnect(struct usb_interface *intf) 198 { 199 struct iforce *iforce = usb_get_intfdata(intf); 200 201 usb_set_intfdata(intf, NULL); 202 203 input_unregister_device(iforce->dev); 204 205 usb_free_urb(iforce->irq); 206 usb_free_urb(iforce->out); 207 usb_free_urb(iforce->ctrl); 208 209 kfree(iforce); 210 } 211 212 static const struct usb_device_id iforce_usb_ids[] = { 213 { USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */ 214 { USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */ 215 { USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */ 216 { USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */ 217 { USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */ 218 { USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */ 219 { USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */ 220 { USB_DEVICE(0x061c, 0xc084) }, /* ACT LABS Force RS */ 221 { USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */ 222 { USB_DEVICE(0x06f8, 0x0003) }, /* Guillemot Jet Leader Force Feedback */ 223 { USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */ 224 { USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */ 225 { } /* Terminating entry */ 226 }; 227 228 MODULE_DEVICE_TABLE (usb, iforce_usb_ids); 229 230 struct usb_driver iforce_usb_driver = { 231 .name = "iforce", 232 .probe = iforce_usb_probe, 233 .disconnect = iforce_usb_disconnect, 234 .id_table = iforce_usb_ids, 235 }; 236