1 /* 2 * $Id: iforce-usb.c,v 1.16 2002/06/09 11:08:04 jdeneux Exp $ 3 * 4 * Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz> 5 * Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.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 32 void 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 printk(KERN_WARNING "iforce-usb.c: iforce_usb_xmit: usb_submit_urb failed %d\n", n); 69 } 70 71 /* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended. 72 * As long as the urb completion handler is not called, the transmiting 73 * is considered to be running */ 74 spin_unlock_irqrestore(&iforce->xmit_lock, flags); 75 } 76 77 static void iforce_usb_irq(struct urb *urb, struct pt_regs *regs) 78 { 79 struct iforce *iforce = urb->context; 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 dbg("%s - urb shutting down with status: %d", 91 __FUNCTION__, urb->status); 92 return; 93 default: 94 dbg("%s - urb has status of: %d", __FUNCTION__, urb->status); 95 goto exit; 96 } 97 98 wake_up(&iforce->wait); 99 iforce_process_packet(iforce, 100 (iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1, regs); 101 102 exit: 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 } 108 109 static void iforce_usb_out(struct urb *urb, struct pt_regs *regs) 110 { 111 struct iforce *iforce = urb->context; 112 113 if (urb->status) { 114 printk(KERN_DEBUG "iforce_usb_out: urb->status %d, exiting", urb->status); 115 return; 116 } 117 118 iforce_usb_xmit(iforce); 119 120 wake_up(&iforce->wait); 121 } 122 123 static void iforce_usb_ctrl(struct urb *urb, struct pt_regs *regs) 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 } 130 131 static 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; 138 139 interface = intf->cur_altsetting; 140 141 epirq = &interface->endpoint[0].desc; 142 epout = &interface->endpoint[1].desc; 143 144 if (!(iforce = kmalloc(sizeof(struct iforce) + 32, GFP_KERNEL))) 145 goto fail; 146 147 memset(iforce, 0, sizeof(struct iforce)); 148 149 if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL))) { 150 goto fail; 151 } 152 153 if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL))) { 154 goto fail; 155 } 156 157 if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL))) { 158 goto fail; 159 } 160 161 iforce->bus = IFORCE_USB; 162 iforce->usbdev = dev; 163 164 iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE; 165 iforce->cr.wIndex = 0; 166 iforce->cr.wLength = 16; 167 168 usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress), 169 iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval); 170 171 usb_fill_bulk_urb(iforce->out, dev, usb_sndbulkpipe(dev, epout->bEndpointAddress), 172 iforce + 1, 32, iforce_usb_out, iforce); 173 174 usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0), 175 (void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce); 176 177 if (iforce_init_device(iforce)) goto fail; 178 179 usb_set_intfdata(intf, iforce); 180 return 0; 181 182 fail: 183 if (iforce) { 184 if (iforce->irq) usb_free_urb(iforce->irq); 185 if (iforce->out) usb_free_urb(iforce->out); 186 if (iforce->ctrl) usb_free_urb(iforce->ctrl); 187 kfree(iforce); 188 } 189 190 return -ENODEV; 191 } 192 193 /* Called by iforce_delete() */ 194 void iforce_usb_delete(struct iforce* iforce) 195 { 196 usb_unlink_urb(iforce->irq); 197 /* Is it ok to unlink those ? */ 198 usb_unlink_urb(iforce->out); 199 usb_unlink_urb(iforce->ctrl); 200 201 usb_free_urb(iforce->irq); 202 usb_free_urb(iforce->out); 203 usb_free_urb(iforce->ctrl); 204 } 205 206 static void iforce_usb_disconnect(struct usb_interface *intf) 207 { 208 struct iforce *iforce = usb_get_intfdata(intf); 209 int open = 0; /* FIXME! iforce->dev.handle->open; */ 210 211 usb_set_intfdata(intf, NULL); 212 if (iforce) { 213 iforce->usbdev = NULL; 214 input_unregister_device(&iforce->dev); 215 216 if (!open) { 217 iforce_delete_device(iforce); 218 kfree(iforce); 219 } 220 } 221 } 222 223 static struct usb_device_id iforce_usb_ids [] = { 224 { USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */ 225 { USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */ 226 { USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */ 227 { USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */ 228 { USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */ 229 { USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */ 230 { USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */ 231 { USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */ 232 { USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */ 233 { USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */ 234 { } /* Terminating entry */ 235 }; 236 237 MODULE_DEVICE_TABLE (usb, iforce_usb_ids); 238 239 struct usb_driver iforce_usb_driver = { 240 .owner = THIS_MODULE, 241 .name = "iforce", 242 .probe = iforce_usb_probe, 243 .disconnect = iforce_usb_disconnect, 244 .id_table = iforce_usb_ids, 245 }; 246