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 #include "opt_wlan.h" 23 24 #include <sys/param.h> 25 #include <sys/lock.h> 26 #include <sys/mutex.h> 27 #include <sys/condvar.h> 28 #include <sys/mbuf.h> 29 #include <sys/kernel.h> 30 #include <sys/socket.h> 31 #include <sys/systm.h> 32 #include <sys/malloc.h> 33 #include <sys/queue.h> 34 #include <sys/taskqueue.h> 35 #include <sys/bus.h> 36 #include <sys/endian.h> 37 38 #include <dev/usb/usb.h> 39 #include <dev/usb/usbdi.h> 40 #include <dev/usb/usb_device.h> 41 42 #include <net/if.h> 43 #include <net/ethernet.h> 44 #include <net/if_media.h> 45 46 #include <net80211/ieee80211_var.h> 47 48 #include <dev/rtwn/if_rtwnvar.h> 49 #include <dev/rtwn/if_rtwn_debug.h> 50 51 #include <dev/rtwn/usb/rtwn_usb_var.h> 52 #include <dev/rtwn/usb/rtwn_usb_ep.h> 53 #include <dev/rtwn/usb/rtwn_usb_rx.h> 54 #include <dev/rtwn/usb/rtwn_usb_tx.h> 55 56 #include <dev/rtwn/rtl8192c/usb/r92cu_reg.h> 57 58 static const struct usb_config rtwn_config_common[RTWN_N_TRANSFER] = { 59 [RTWN_BULK_RX] = { 60 .type = UE_BULK, 61 .endpoint = UE_ADDR_ANY, 62 .direction = UE_DIR_IN, 63 .flags = { 64 .pipe_bof = 1, 65 .short_xfer_ok = 1 66 }, 67 .callback = rtwn_bulk_rx_callback, 68 }, 69 [RTWN_BULK_TX_BE] = { 70 .type = UE_BULK, 71 .endpoint = UE_ADDR_ANY, 72 .direction = UE_DIR_OUT, 73 .bufsize = RTWN_USB_TXBUFSZ, 74 .flags = { 75 .ext_buffer = 1, 76 .pipe_bof = 1, 77 .force_short_xfer = 1, 78 }, 79 .callback = rtwn_bulk_tx_callback, 80 .timeout = RTWN_TX_TIMEOUT, /* ms */ 81 }, 82 [RTWN_BULK_TX_BK] = { 83 .type = UE_BULK, 84 .endpoint = UE_ADDR_ANY, 85 .direction = UE_DIR_OUT, 86 .bufsize = RTWN_USB_TXBUFSZ, 87 .flags = { 88 .ext_buffer = 1, 89 .pipe_bof = 1, 90 .force_short_xfer = 1, 91 }, 92 .callback = rtwn_bulk_tx_callback, 93 .timeout = RTWN_TX_TIMEOUT, /* ms */ 94 }, 95 [RTWN_BULK_TX_VI] = { 96 .type = UE_BULK, 97 .endpoint = UE_ADDR_ANY, 98 .direction = UE_DIR_OUT, 99 .bufsize = RTWN_USB_TXBUFSZ, 100 .flags = { 101 .ext_buffer = 1, 102 .pipe_bof = 1, 103 .force_short_xfer = 1 104 }, 105 .callback = rtwn_bulk_tx_callback, 106 .timeout = RTWN_TX_TIMEOUT, /* ms */ 107 }, 108 [RTWN_BULK_TX_VO] = { 109 .type = UE_BULK, 110 .endpoint = UE_ADDR_ANY, 111 .direction = UE_DIR_OUT, 112 .bufsize = RTWN_USB_TXBUFSZ, 113 .flags = { 114 .ext_buffer = 1, 115 .pipe_bof = 1, 116 .force_short_xfer = 1 117 }, 118 .callback = rtwn_bulk_tx_callback, 119 .timeout = RTWN_TX_TIMEOUT, /* ms */ 120 }, 121 }; 122 123 static void 124 rtwn_usb_setup_queues(struct rtwn_usb_softc *uc) 125 { 126 struct rtwn_softc *sc = &uc->uc_sc; 127 int hasnq, haslq, nqueues, nqpages, nrempages; 128 129 /* Get Tx queues to USB endpoints mapping. */ 130 hasnq = haslq = 0; 131 switch (uc->ntx) { 132 case 4: 133 case 3: 134 haslq = 1; 135 /* FALLTHROUGH */ 136 case 2: 137 hasnq = 1; 138 /* FALLTHROUGH */ 139 default: 140 break; 141 } 142 nqueues = 1 + hasnq + haslq; 143 144 /* Get the number of pages for each queue. */ 145 nqpages = (sc->page_count - sc->npubqpages) / nqueues; 146 147 /* 148 * The remaining pages are assigned to the high priority 149 * queue. 150 */ 151 nrempages = (sc->page_count - sc->npubqpages) % nqueues; 152 153 sc->nhqpages = nqpages + nrempages; 154 sc->nnqpages = (hasnq ? nqpages : 0); 155 sc->nlqpages = (haslq ? nqpages : 0); 156 } 157 158 int 159 rtwn_usb_setup_endpoints(struct rtwn_usb_softc *uc) 160 { 161 struct usb_config *rtwn_config; 162 struct rtwn_softc *sc = &uc->uc_sc; 163 const uint8_t iface_index = RTWN_IFACE_INDEX; 164 struct usb_endpoint *ep, *ep_end; 165 uint8_t addr[RTWN_MAX_EPOUT]; 166 int error; 167 168 /* Determine the number of bulk-out pipes. */ 169 uc->ntx = 0; 170 ep = uc->uc_udev->endpoints; 171 ep_end = uc->uc_udev->endpoints + uc->uc_udev->endpoints_max; 172 for (; ep != ep_end; ep++) { 173 uint8_t eaddr; 174 175 if ((ep->edesc == NULL) || (ep->iface_index != iface_index)) 176 continue; 177 178 eaddr = ep->edesc->bEndpointAddress; 179 RTWN_DPRINTF(sc, RTWN_DEBUG_USB, 180 "%s: endpoint: addr %u, direction %s\n", __func__, 181 UE_GET_ADDR(eaddr), UE_GET_DIR(eaddr) == UE_DIR_OUT ? 182 "output" : "input"); 183 184 if (UE_GET_DIR(eaddr) == UE_DIR_OUT) { 185 if (uc->ntx == RTWN_MAX_EPOUT) 186 break; 187 188 addr[uc->ntx++] = UE_GET_ADDR(eaddr); 189 } 190 } 191 if (uc->ntx == 0 || uc->ntx > RTWN_MAX_EPOUT) { 192 device_printf(sc->sc_dev, 193 "%s: invalid number of Tx bulk pipes (%d)\n", __func__, 194 uc->ntx); 195 return (EINVAL); 196 } 197 198 rtwn_config = malloc(sizeof(rtwn_config_common), M_TEMP, M_WAITOK); 199 memcpy(rtwn_config, rtwn_config_common, sizeof(rtwn_config_common)); 200 201 /* NB: keep in sync with rtwn_dma_init(). */ 202 rtwn_config[RTWN_BULK_TX_VO].endpoint = addr[0]; 203 switch (uc->ntx) { 204 case 4: 205 case 3: 206 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[2]; 207 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[2]; 208 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[1]; 209 break; 210 case 2: 211 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[1]; 212 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[1]; 213 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0]; 214 break; 215 case 1: 216 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[0]; 217 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[0]; 218 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0]; 219 break; 220 default: 221 KASSERT(0, ("unhandled number of endpoints %d\n", uc->ntx)); 222 break; 223 } 224 225 rtwn_config[RTWN_BULK_RX].bufsize = 226 uc->uc_rx_buf_size * RTWN_USB_RXBUFSZ_UNIT; 227 error = usbd_transfer_setup(uc->uc_udev, &iface_index, 228 uc->uc_xfer, rtwn_config, RTWN_N_TRANSFER, uc, &sc->sc_mtx); 229 free(rtwn_config, M_TEMP); 230 231 if (error) { 232 device_printf(sc->sc_dev, "could not allocate USB transfers, " 233 "err=%s\n", usbd_errstr(error)); 234 return (error); 235 } 236 237 /* Assign pages for each queue (if not done). */ 238 if (sc->nhqpages == 0 && sc->nnqpages == 0 && sc->nlqpages == 0) 239 rtwn_usb_setup_queues(uc); 240 241 return (0); 242 } 243 244 uint16_t 245 rtwn_usb_get_qmap(struct rtwn_softc *sc) 246 { 247 struct rtwn_usb_softc *uc = RTWN_USB_SOFTC(sc); 248 249 switch (uc->ntx) { 250 case 1: 251 return (R92C_TRXDMA_CTRL_QMAP_HQ); 252 case 2: 253 return (R92C_TRXDMA_CTRL_QMAP_HQ_NQ); 254 default: 255 return (R92C_TRXDMA_CTRL_QMAP_3EP); 256 } 257 } 258