1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr> 5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org> 6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/cdefs.h> 22 __FBSDID("$FreeBSD$"); 23 24 #include "opt_wlan.h" 25 26 #include <sys/param.h> 27 #include <sys/lock.h> 28 #include <sys/mutex.h> 29 #include <sys/condvar.h> 30 #include <sys/mbuf.h> 31 #include <sys/kernel.h> 32 #include <sys/socket.h> 33 #include <sys/systm.h> 34 #include <sys/malloc.h> 35 #include <sys/queue.h> 36 #include <sys/taskqueue.h> 37 #include <sys/bus.h> 38 #include <sys/endian.h> 39 40 #include <dev/usb/usb.h> 41 #include <dev/usb/usbdi.h> 42 #include <dev/usb/usb_device.h> 43 44 #include <net/if.h> 45 #include <net/ethernet.h> 46 #include <net/if_media.h> 47 48 #include <net80211/ieee80211_var.h> 49 50 #include <dev/rtwn/if_rtwnvar.h> 51 #include <dev/rtwn/if_rtwn_debug.h> 52 53 #include <dev/rtwn/usb/rtwn_usb_var.h> 54 #include <dev/rtwn/usb/rtwn_usb_ep.h> 55 #include <dev/rtwn/usb/rtwn_usb_rx.h> 56 #include <dev/rtwn/usb/rtwn_usb_tx.h> 57 58 #include <dev/rtwn/rtl8192c/usb/r92cu_reg.h> 59 60 61 static const struct usb_config rtwn_config_common[RTWN_N_TRANSFER] = { 62 [RTWN_BULK_RX] = { 63 .type = UE_BULK, 64 .endpoint = UE_ADDR_ANY, 65 .direction = UE_DIR_IN, 66 .flags = { 67 .pipe_bof = 1, 68 .short_xfer_ok = 1 69 }, 70 .callback = rtwn_bulk_rx_callback, 71 }, 72 [RTWN_BULK_TX_BE] = { 73 .type = UE_BULK, 74 .endpoint = UE_ADDR_ANY, 75 .direction = UE_DIR_OUT, 76 .bufsize = RTWN_USB_TXBUFSZ, 77 .flags = { 78 .ext_buffer = 1, 79 .pipe_bof = 1, 80 .force_short_xfer = 1, 81 }, 82 .callback = rtwn_bulk_tx_callback, 83 .timeout = RTWN_TX_TIMEOUT, /* ms */ 84 }, 85 [RTWN_BULK_TX_BK] = { 86 .type = UE_BULK, 87 .endpoint = UE_ADDR_ANY, 88 .direction = UE_DIR_OUT, 89 .bufsize = RTWN_USB_TXBUFSZ, 90 .flags = { 91 .ext_buffer = 1, 92 .pipe_bof = 1, 93 .force_short_xfer = 1, 94 }, 95 .callback = rtwn_bulk_tx_callback, 96 .timeout = RTWN_TX_TIMEOUT, /* ms */ 97 }, 98 [RTWN_BULK_TX_VI] = { 99 .type = UE_BULK, 100 .endpoint = UE_ADDR_ANY, 101 .direction = UE_DIR_OUT, 102 .bufsize = RTWN_USB_TXBUFSZ, 103 .flags = { 104 .ext_buffer = 1, 105 .pipe_bof = 1, 106 .force_short_xfer = 1 107 }, 108 .callback = rtwn_bulk_tx_callback, 109 .timeout = RTWN_TX_TIMEOUT, /* ms */ 110 }, 111 [RTWN_BULK_TX_VO] = { 112 .type = UE_BULK, 113 .endpoint = UE_ADDR_ANY, 114 .direction = UE_DIR_OUT, 115 .bufsize = RTWN_USB_TXBUFSZ, 116 .flags = { 117 .ext_buffer = 1, 118 .pipe_bof = 1, 119 .force_short_xfer = 1 120 }, 121 .callback = rtwn_bulk_tx_callback, 122 .timeout = RTWN_TX_TIMEOUT, /* ms */ 123 }, 124 }; 125 126 static void 127 rtwn_usb_setup_queues(struct rtwn_usb_softc *uc) 128 { 129 struct rtwn_softc *sc = &uc->uc_sc; 130 int hasnq, haslq, nqueues, nqpages, nrempages; 131 132 /* Get Tx queues to USB endpoints mapping. */ 133 hasnq = haslq = 0; 134 switch (uc->ntx) { 135 case 4: 136 case 3: 137 haslq = 1; 138 /* FALLTHROUGH */ 139 case 2: 140 hasnq = 1; 141 /* FALLTHROUGH */ 142 default: 143 break; 144 } 145 nqueues = 1 + hasnq + haslq; 146 147 /* Get the number of pages for each queue. */ 148 nqpages = (sc->page_count - sc->npubqpages) / nqueues; 149 150 /* 151 * The remaining pages are assigned to the high priority 152 * queue. 153 */ 154 nrempages = (sc->page_count - sc->npubqpages) % nqueues; 155 156 sc->nhqpages = nqpages + nrempages; 157 sc->nnqpages = (hasnq ? nqpages : 0); 158 sc->nlqpages = (haslq ? nqpages : 0); 159 } 160 161 int 162 rtwn_usb_setup_endpoints(struct rtwn_usb_softc *uc) 163 { 164 struct usb_config *rtwn_config; 165 struct rtwn_softc *sc = &uc->uc_sc; 166 const uint8_t iface_index = RTWN_IFACE_INDEX; 167 struct usb_endpoint *ep, *ep_end; 168 uint8_t addr[RTWN_MAX_EPOUT]; 169 int error; 170 171 /* Determine the number of bulk-out pipes. */ 172 uc->ntx = 0; 173 ep = uc->uc_udev->endpoints; 174 ep_end = uc->uc_udev->endpoints + uc->uc_udev->endpoints_max; 175 for (; ep != ep_end; ep++) { 176 uint8_t eaddr; 177 178 if ((ep->edesc == NULL) || (ep->iface_index != iface_index)) 179 continue; 180 181 eaddr = ep->edesc->bEndpointAddress; 182 RTWN_DPRINTF(sc, RTWN_DEBUG_USB, 183 "%s: endpoint: addr %u, direction %s\n", __func__, 184 UE_GET_ADDR(eaddr), UE_GET_DIR(eaddr) == UE_DIR_OUT ? 185 "output" : "input"); 186 187 if (UE_GET_DIR(eaddr) == UE_DIR_OUT) { 188 if (uc->ntx == RTWN_MAX_EPOUT) 189 break; 190 191 addr[uc->ntx++] = UE_GET_ADDR(eaddr); 192 } 193 } 194 if (uc->ntx == 0 || uc->ntx > RTWN_MAX_EPOUT) { 195 device_printf(sc->sc_dev, 196 "%s: invalid number of Tx bulk pipes (%d)\n", __func__, 197 uc->ntx); 198 return (EINVAL); 199 } 200 201 rtwn_config = malloc(sizeof(rtwn_config_common), M_TEMP, M_WAITOK); 202 memcpy(rtwn_config, rtwn_config_common, sizeof(rtwn_config_common)); 203 204 /* NB: keep in sync with rtwn_dma_init(). */ 205 rtwn_config[RTWN_BULK_TX_VO].endpoint = addr[0]; 206 switch (uc->ntx) { 207 case 4: 208 case 3: 209 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[2]; 210 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[2]; 211 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[1]; 212 break; 213 case 2: 214 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[1]; 215 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[1]; 216 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0]; 217 break; 218 case 1: 219 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[0]; 220 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[0]; 221 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0]; 222 break; 223 default: 224 KASSERT(0, ("unhandled number of endpoints %d\n", uc->ntx)); 225 break; 226 } 227 228 rtwn_config[RTWN_BULK_RX].bufsize = sc->rx_dma_size + 1024; 229 error = usbd_transfer_setup(uc->uc_udev, &iface_index, 230 uc->uc_xfer, rtwn_config, RTWN_N_TRANSFER, uc, &sc->sc_mtx); 231 free(rtwn_config, M_TEMP); 232 233 if (error) { 234 device_printf(sc->sc_dev, "could not allocate USB transfers, " 235 "err=%s\n", usbd_errstr(error)); 236 return (error); 237 } 238 239 /* Assign pages for each queue (if not done). */ 240 if (sc->nhqpages == 0 && sc->nnqpages == 0 && sc->nlqpages == 0) 241 rtwn_usb_setup_queues(uc); 242 243 return (0); 244 } 245 246 uint16_t 247 rtwn_usb_get_qmap(struct rtwn_softc *sc) 248 { 249 struct rtwn_usb_softc *uc = RTWN_USB_SOFTC(sc); 250 251 switch (uc->ntx) { 252 case 1: 253 return (R92C_TRXDMA_CTRL_QMAP_HQ); 254 case 2: 255 return (R92C_TRXDMA_CTRL_QMAP_HQ_NQ); 256 default: 257 return (R92C_TRXDMA_CTRL_QMAP_3EP); 258 } 259 } 260