rtwn_usb_ep.c

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    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 static const struct usb_config rtwn_config_common[RTWN_N_TRANSFER] = {
   61         [RTWN_BULK_RX] = {
   62                 .type = UE_BULK,
   63                 .endpoint = UE_ADDR_ANY,
   64                 .direction = UE_DIR_IN,
   65                 .flags = {
   66                         .pipe_bof = 1,
   67                         .short_xfer_ok = 1
   68                 },
   69                 .callback = rtwn_bulk_rx_callback,
   70         },
   71         [RTWN_BULK_TX_BE] = {
   72                 .type = UE_BULK,
   73                 .endpoint = UE_ADDR_ANY,
   74                 .direction = UE_DIR_OUT,
   75                 .bufsize = RTWN_USB_TXBUFSZ,
   76                 .flags = {
   77                         .ext_buffer = 1,
   78                         .pipe_bof = 1,
   79                         .force_short_xfer = 1,
   80                 },
   81                 .callback = rtwn_bulk_tx_callback,
   82                 .timeout = RTWN_TX_TIMEOUT,     /* ms */
   83         },
   84         [RTWN_BULK_TX_BK] = {
   85                 .type = UE_BULK,
   86                 .endpoint = UE_ADDR_ANY,
   87                 .direction = UE_DIR_OUT,
   88                 .bufsize = RTWN_USB_TXBUFSZ,
   89                 .flags = {
   90                         .ext_buffer = 1,
   91                         .pipe_bof = 1,
   92                         .force_short_xfer = 1,
   93                 },
   94                 .callback = rtwn_bulk_tx_callback,
   95                 .timeout = RTWN_TX_TIMEOUT,     /* ms */
   96         },
   97         [RTWN_BULK_TX_VI] = {
   98                 .type = UE_BULK,
   99                 .endpoint = UE_ADDR_ANY,
  100                 .direction = UE_DIR_OUT,
  101                 .bufsize = RTWN_USB_TXBUFSZ,
  102                 .flags = {
  103                         .ext_buffer = 1,
  104                         .pipe_bof = 1,
  105                         .force_short_xfer = 1
  106                 },
  107                 .callback = rtwn_bulk_tx_callback,
  108                 .timeout = RTWN_TX_TIMEOUT,     /* ms */
  109         },
  110         [RTWN_BULK_TX_VO] = {
  111                 .type = UE_BULK,
  112                 .endpoint = UE_ADDR_ANY,
  113                 .direction = UE_DIR_OUT,
  114                 .bufsize = RTWN_USB_TXBUFSZ,
  115                 .flags = {
  116                         .ext_buffer = 1,
  117                         .pipe_bof = 1,
  118                         .force_short_xfer = 1
  119                 },
  120                 .callback = rtwn_bulk_tx_callback,
  121                 .timeout = RTWN_TX_TIMEOUT,     /* ms */
  122         },
  123 };
  124 
  125 static void
  126 rtwn_usb_setup_queues(struct rtwn_usb_softc *uc)
  127 {
  128         struct rtwn_softc *sc = &uc->uc_sc;
  129         int hasnq, haslq, nqueues, nqpages, nrempages;
  130 
  131         /* Get Tx queues to USB endpoints mapping. */
  132         hasnq = haslq = 0;
  133         switch (uc->ntx) {
  134         case 4:
  135         case 3:
  136                 haslq = 1;
  137                 /* FALLTHROUGH */
  138         case 2:
  139                 hasnq = 1;
  140                 /* FALLTHROUGH */
  141         default:
  142                 break;
  143         }
  144         nqueues = 1 + hasnq + haslq;
  145 
  146         /* Get the number of pages for each queue. */
  147         nqpages = (sc->page_count - sc->npubqpages) / nqueues;
  148 
  149         /*
  150          * The remaining pages are assigned to the high priority
  151          * queue.
  152          */
  153         nrempages = (sc->page_count - sc->npubqpages) % nqueues;
  154 
  155         sc->nhqpages = nqpages + nrempages;
  156         sc->nnqpages = (hasnq ? nqpages : 0);
  157         sc->nlqpages = (haslq ? nqpages : 0);
  158 }
  159 
  160 int
  161 rtwn_usb_setup_endpoints(struct rtwn_usb_softc *uc)
  162 {
  163         struct usb_config *rtwn_config;
  164         struct rtwn_softc *sc = &uc->uc_sc;
  165         const uint8_t iface_index = RTWN_IFACE_INDEX;
  166         struct usb_endpoint *ep, *ep_end;
  167         uint8_t addr[RTWN_MAX_EPOUT];
  168         int error;
  169 
  170         /* Determine the number of bulk-out pipes. */
  171         uc->ntx = 0;
  172         ep = uc->uc_udev->endpoints;
  173         ep_end = uc->uc_udev->endpoints + uc->uc_udev->endpoints_max;
  174         for (; ep != ep_end; ep++) {
  175                 uint8_t eaddr;
  176 
  177                 if ((ep->edesc == NULL) || (ep->iface_index != iface_index))
  178                         continue;
  179 
  180                 eaddr = ep->edesc->bEndpointAddress;
  181                 RTWN_DPRINTF(sc, RTWN_DEBUG_USB,
  182                     "%s: endpoint: addr %u, direction %s\n", __func__,
  183                     UE_GET_ADDR(eaddr), UE_GET_DIR(eaddr) == UE_DIR_OUT ?
  184                     "output" : "input");
  185 
  186                 if (UE_GET_DIR(eaddr) == UE_DIR_OUT) {
  187                         if (uc->ntx == RTWN_MAX_EPOUT)
  188                                 break;
  189 
  190                         addr[uc->ntx++] = UE_GET_ADDR(eaddr);
  191                 }
  192         }
  193         if (uc->ntx == 0 || uc->ntx > RTWN_MAX_EPOUT) {
  194                 device_printf(sc->sc_dev,
  195                     "%s: invalid number of Tx bulk pipes (%d)\n", __func__,
  196                     uc->ntx);
  197                 return (EINVAL);
  198         }
  199 
  200         rtwn_config = malloc(sizeof(rtwn_config_common), M_TEMP, M_WAITOK);
  201         memcpy(rtwn_config, rtwn_config_common, sizeof(rtwn_config_common));
  202 
  203         /* NB: keep in sync with rtwn_dma_init(). */
  204         rtwn_config[RTWN_BULK_TX_VO].endpoint = addr[0];
  205         switch (uc->ntx) {
  206         case 4:
  207         case 3:
  208                 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[2];
  209                 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[2];
  210                 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[1];
  211                 break;
  212         case 2:
  213                 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[1];
  214                 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[1];
  215                 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0];
  216                 break;
  217         case 1:
  218                 rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[0];
  219                 rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[0];
  220                 rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0];
  221                 break;
  222         default:
  223                 KASSERT(0, ("unhandled number of endpoints %d\n", uc->ntx));
  224                 break;
  225         }
  226 
  227         rtwn_config[RTWN_BULK_RX].bufsize =
  228             uc->uc_rx_buf_size * RTWN_USB_RXBUFSZ_UNIT;
  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 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/rtwn/usb/rtwn_usb_ep.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/rtwn/usb/rtwn_usb_ep.c