1 /* 2 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 6 * as published by the Free Software Foundation 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 14 #include <linux/kernel.h> 15 #include <linux/module.h> 16 #include <linux/usb.h> 17 18 #include "mt76x0.h" 19 #include "usb.h" 20 #include "trace.h" 21 22 static struct usb_device_id mt76x0_device_table[] = { 23 { USB_DEVICE(0x148F, 0x7610) }, /* MT7610U */ 24 { USB_DEVICE(0x13B1, 0x003E) }, /* Linksys AE6000 */ 25 { USB_DEVICE(0x0E8D, 0x7610) }, /* Sabrent NTWLAC */ 26 { USB_DEVICE(0x7392, 0xa711) }, /* Edimax 7711mac */ 27 { USB_DEVICE(0x7392, 0xb711) }, /* Edimax / Elecom */ 28 { USB_DEVICE(0x148f, 0x761a) }, /* TP-Link TL-WDN5200 */ 29 { USB_DEVICE(0x148f, 0x760a) }, /* TP-Link unknown */ 30 { USB_DEVICE(0x0b05, 0x17d1) }, /* Asus USB-AC51 */ 31 { USB_DEVICE(0x0b05, 0x17db) }, /* Asus USB-AC50 */ 32 { USB_DEVICE(0x0df6, 0x0075) }, /* Sitecom WLA-3100 */ 33 { USB_DEVICE(0x2019, 0xab31) }, /* Planex GW-450D */ 34 { USB_DEVICE(0x2001, 0x3d02) }, /* D-LINK DWA-171 rev B1 */ 35 { USB_DEVICE(0x0586, 0x3425) }, /* Zyxel NWD6505 */ 36 { USB_DEVICE(0x07b8, 0x7610) }, /* AboCom AU7212 */ 37 { USB_DEVICE(0x04bb, 0x0951) }, /* I-O DATA WN-AC433UK */ 38 { USB_DEVICE(0x057c, 0x8502) }, /* AVM FRITZ!WLAN USB Stick AC 430 */ 39 { USB_DEVICE(0x293c, 0x5702) }, /* Comcast Xfinity KXW02AAA */ 40 { USB_DEVICE(0x20f4, 0x806b) }, /* TRENDnet TEW-806UBH */ 41 { USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */ 42 { USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac Stick */ 43 { USB_DEVICE(0x2357, 0x0105) }, /* TP-LINK Archer T1U */ 44 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)}, /* MT7630U */ 45 { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)}, /* MT7650U */ 46 { 0, } 47 }; 48 49 bool mt76x0_usb_alloc_buf(struct mt76x0_dev *dev, size_t len, 50 struct mt76x0_dma_buf *buf) 51 { 52 struct usb_device *usb_dev = mt76x0_to_usb_dev(dev); 53 54 buf->len = len; 55 buf->urb = usb_alloc_urb(0, GFP_KERNEL); 56 buf->buf = usb_alloc_coherent(usb_dev, buf->len, GFP_KERNEL, &buf->dma); 57 58 return !buf->urb || !buf->buf; 59 } 60 61 void mt76x0_usb_free_buf(struct mt76x0_dev *dev, struct mt76x0_dma_buf *buf) 62 { 63 struct usb_device *usb_dev = mt76x0_to_usb_dev(dev); 64 65 usb_free_coherent(usb_dev, buf->len, buf->buf, buf->dma); 66 usb_free_urb(buf->urb); 67 } 68 69 int mt76x0_usb_submit_buf(struct mt76x0_dev *dev, int dir, int ep_idx, 70 struct mt76x0_dma_buf *buf, gfp_t gfp, 71 usb_complete_t complete_fn, void *context) 72 { 73 struct usb_device *usb_dev = mt76x0_to_usb_dev(dev); 74 unsigned pipe; 75 int ret; 76 77 if (dir == USB_DIR_IN) 78 pipe = usb_rcvbulkpipe(usb_dev, dev->in_ep[ep_idx]); 79 else 80 pipe = usb_sndbulkpipe(usb_dev, dev->out_ep[ep_idx]); 81 82 usb_fill_bulk_urb(buf->urb, usb_dev, pipe, buf->buf, buf->len, 83 complete_fn, context); 84 buf->urb->transfer_dma = buf->dma; 85 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 86 87 trace_mt76x0_submit_urb(&dev->mt76, buf->urb); 88 ret = usb_submit_urb(buf->urb, gfp); 89 if (ret) 90 dev_err(dev->mt76.dev, "Error: submit URB dir:%d ep:%d failed:%d\n", 91 dir, ep_idx, ret); 92 return ret; 93 } 94 95 void mt76x0_complete_urb(struct urb *urb) 96 { 97 struct completion *cmpl = urb->context; 98 99 complete(cmpl); 100 } 101 102 int mt76x0_vendor_request(struct mt76x0_dev *dev, const u8 req, 103 const u8 direction, const u16 val, const u16 offset, 104 void *buf, const size_t buflen) 105 { 106 int i, ret; 107 struct usb_device *usb_dev = mt76x0_to_usb_dev(dev); 108 const u8 req_type = direction | USB_TYPE_VENDOR | USB_RECIP_DEVICE; 109 const unsigned int pipe = (direction == USB_DIR_IN) ? 110 usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0); 111 112 for (i = 0; i < MT_VEND_REQ_MAX_RETRY; i++) { 113 ret = usb_control_msg(usb_dev, pipe, req, req_type, 114 val, offset, buf, buflen, 115 MT_VEND_REQ_TOUT_MS); 116 trace_mt76x0_vend_req(&dev->mt76, pipe, req, req_type, val, offset, 117 buf, buflen, ret); 118 119 if (ret == -ENODEV) 120 set_bit(MT76_REMOVED, &dev->mt76.state); 121 if (ret >= 0 || ret == -ENODEV) 122 return ret; 123 124 msleep(5); 125 } 126 127 dev_err(dev->mt76.dev, "Vendor request req:%02x off:%04x failed:%d\n", 128 req, offset, ret); 129 130 return ret; 131 } 132 133 void mt76x0_vendor_reset(struct mt76x0_dev *dev) 134 { 135 mt76x0_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT, 136 MT_VEND_DEV_MODE_RESET, 0, NULL, 0); 137 } 138 139 static u32 mt76x0_rr(struct mt76_dev *dev, u32 offset) 140 { 141 struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev; 142 int ret; 143 u32 val = ~0; 144 145 WARN_ONCE(offset > USHRT_MAX, "read high off:%08x", offset); 146 147 mutex_lock(&mdev->usb_ctrl_mtx); 148 149 ret = mt76x0_vendor_request((struct mt76x0_dev *)dev, MT_VEND_MULTI_READ, USB_DIR_IN, 150 0, offset, mdev->data, MT_VEND_BUF); 151 if (ret == MT_VEND_BUF) 152 val = get_unaligned_le32(mdev->data); 153 else if (ret > 0) 154 dev_err(dev->dev, "Error: wrong size read:%d off:%08x\n", 155 ret, offset); 156 157 mutex_unlock(&mdev->usb_ctrl_mtx); 158 159 trace_mt76x0_reg_read(dev, offset, val); 160 return val; 161 } 162 163 int mt76x0_vendor_single_wr(struct mt76x0_dev *dev, const u8 req, 164 const u16 offset, const u32 val) 165 { 166 struct mt76x0_dev *mdev = dev; 167 int ret; 168 169 mutex_lock(&mdev->usb_ctrl_mtx); 170 171 ret = mt76x0_vendor_request(dev, req, USB_DIR_OUT, 172 val & 0xffff, offset, NULL, 0); 173 if (!ret) 174 ret = mt76x0_vendor_request(dev, req, USB_DIR_OUT, 175 val >> 16, offset + 2, NULL, 0); 176 177 mutex_unlock(&mdev->usb_ctrl_mtx); 178 179 return ret; 180 } 181 182 static void mt76x0_wr(struct mt76_dev *dev, u32 offset, u32 val) 183 { 184 struct mt76x0_dev *mdev = (struct mt76x0_dev *) dev; 185 int ret; 186 187 WARN_ONCE(offset > USHRT_MAX, "write high off:%08x", offset); 188 189 mutex_lock(&mdev->usb_ctrl_mtx); 190 191 put_unaligned_le32(val, mdev->data); 192 ret = mt76x0_vendor_request(mdev, MT_VEND_MULTI_WRITE, USB_DIR_OUT, 193 0, offset, mdev->data, MT_VEND_BUF); 194 trace_mt76x0_reg_write(dev, offset, val); 195 196 mutex_unlock(&mdev->usb_ctrl_mtx); 197 } 198 199 static u32 mt76x0_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val) 200 { 201 val |= mt76x0_rr(dev, offset) & ~mask; 202 mt76x0_wr(dev, offset, val); 203 return val; 204 } 205 206 static void mt76x0_wr_copy(struct mt76_dev *dev, u32 offset, 207 const void *data, int len) 208 { 209 WARN_ONCE(offset & 3, "unaligned write copy off:%08x", offset); 210 WARN_ONCE(len & 3, "short write copy off:%08x", offset); 211 212 mt76x0_burst_write_regs((struct mt76x0_dev *) dev, offset, data, len / 4); 213 } 214 215 void mt76x0_addr_wr(struct mt76x0_dev *dev, const u32 offset, const u8 *addr) 216 { 217 mt76_wr(dev, offset, get_unaligned_le32(addr)); 218 mt76_wr(dev, offset + 4, addr[4] | addr[5] << 8); 219 } 220 221 static int mt76x0_assign_pipes(struct usb_interface *usb_intf, 222 struct mt76x0_dev *dev) 223 { 224 struct usb_endpoint_descriptor *ep_desc; 225 struct usb_host_interface *intf_desc = usb_intf->cur_altsetting; 226 unsigned i, ep_i = 0, ep_o = 0; 227 228 BUILD_BUG_ON(sizeof(dev->in_ep) < __MT_EP_IN_MAX); 229 BUILD_BUG_ON(sizeof(dev->out_ep) < __MT_EP_OUT_MAX); 230 231 for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) { 232 ep_desc = &intf_desc->endpoint[i].desc; 233 234 if (usb_endpoint_is_bulk_in(ep_desc) && 235 ep_i++ < __MT_EP_IN_MAX) { 236 dev->in_ep[ep_i - 1] = usb_endpoint_num(ep_desc); 237 dev->in_max_packet = usb_endpoint_maxp(ep_desc); 238 /* Note: this is ignored by usb sub-system but vendor 239 * code does it. We can drop this at some point. 240 */ 241 dev->in_ep[ep_i - 1] |= USB_DIR_IN; 242 } else if (usb_endpoint_is_bulk_out(ep_desc) && 243 ep_o++ < __MT_EP_OUT_MAX) { 244 dev->out_ep[ep_o - 1] = usb_endpoint_num(ep_desc); 245 dev->out_max_packet = usb_endpoint_maxp(ep_desc); 246 } 247 } 248 249 if (ep_i != __MT_EP_IN_MAX || ep_o != __MT_EP_OUT_MAX) { 250 dev_err(dev->mt76.dev, "Error: wrong pipe number in:%d out:%d\n", 251 ep_i, ep_o); 252 return -EINVAL; 253 } 254 255 return 0; 256 } 257 258 static int mt76x0_probe(struct usb_interface *usb_intf, 259 const struct usb_device_id *id) 260 { 261 struct usb_device *usb_dev = interface_to_usbdev(usb_intf); 262 struct mt76x0_dev *dev; 263 u32 asic_rev, mac_rev; 264 int ret; 265 static const struct mt76_bus_ops usb_ops = { 266 .rr = mt76x0_rr, 267 .wr = mt76x0_wr, 268 .rmw = mt76x0_rmw, 269 .copy = mt76x0_wr_copy, 270 }; 271 272 dev = mt76x0_alloc_device(&usb_intf->dev); 273 if (!dev) 274 return -ENOMEM; 275 276 usb_dev = usb_get_dev(usb_dev); 277 usb_reset_device(usb_dev); 278 279 usb_set_intfdata(usb_intf, dev); 280 281 dev->mt76.bus = &usb_ops; 282 283 ret = mt76x0_assign_pipes(usb_intf, dev); 284 if (ret) 285 goto err; 286 287 /* Disable the HW, otherwise MCU fail to initalize on hot reboot */ 288 mt76x0_chip_onoff(dev, false, false); 289 290 ret = mt76x0_wait_asic_ready(dev); 291 if (ret) 292 goto err; 293 294 asic_rev = mt76_rr(dev, MT_ASIC_VERSION); 295 mac_rev = mt76_rr(dev, MT_MAC_CSR0); 296 dev_info(dev->mt76.dev, "ASIC revision: %08x MAC revision: %08x\n", 297 asic_rev, mac_rev); 298 299 /* Note: vendor driver skips this check for MT76X0U */ 300 if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL)) 301 dev_warn(dev->mt76.dev, "Warning: eFUSE not present\n"); 302 303 ret = mt76x0_init_hardware(dev); 304 if (ret) 305 goto err; 306 307 ret = mt76x0_register_device(dev); 308 if (ret) 309 goto err_hw; 310 311 set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state); 312 313 return 0; 314 err_hw: 315 mt76x0_cleanup(dev); 316 err: 317 usb_set_intfdata(usb_intf, NULL); 318 usb_put_dev(interface_to_usbdev(usb_intf)); 319 320 destroy_workqueue(dev->stat_wq); 321 ieee80211_free_hw(dev->mt76.hw); 322 return ret; 323 } 324 325 static void mt76x0_disconnect(struct usb_interface *usb_intf) 326 { 327 struct mt76x0_dev *dev = usb_get_intfdata(usb_intf); 328 bool initalized = test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state); 329 330 if (!initalized) 331 return; 332 333 ieee80211_unregister_hw(dev->mt76.hw); 334 mt76x0_cleanup(dev); 335 336 usb_set_intfdata(usb_intf, NULL); 337 usb_put_dev(interface_to_usbdev(usb_intf)); 338 339 destroy_workqueue(dev->stat_wq); 340 ieee80211_free_hw(dev->mt76.hw); 341 } 342 343 static int mt76x0_suspend(struct usb_interface *usb_intf, pm_message_t state) 344 { 345 struct mt76x0_dev *dev = usb_get_intfdata(usb_intf); 346 347 mt76x0_cleanup(dev); 348 349 return 0; 350 } 351 352 static int mt76x0_resume(struct usb_interface *usb_intf) 353 { 354 struct mt76x0_dev *dev = usb_get_intfdata(usb_intf); 355 int ret; 356 357 ret = mt76x0_init_hardware(dev); 358 if (ret) 359 return ret; 360 361 set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state); 362 363 return 0; 364 } 365 366 MODULE_DEVICE_TABLE(usb, mt76x0_device_table); 367 MODULE_FIRMWARE(MT7610_FIRMWARE); 368 MODULE_LICENSE("GPL"); 369 370 static struct usb_driver mt76x0_driver = { 371 .name = KBUILD_MODNAME, 372 .id_table = mt76x0_device_table, 373 .probe = mt76x0_probe, 374 .disconnect = mt76x0_disconnect, 375 .suspend = mt76x0_suspend, 376 .resume = mt76x0_resume, 377 .reset_resume = mt76x0_resume, 378 .soft_unbind = 1, 379 .disable_hub_initiated_lpm = 1, 380 }; 381 module_usb_driver(mt76x0_driver); 382