0866194cab
Use device-specific Rx buffer size to ensure that data will not be truncated + add a warning if truncation was detected (the driver cannot handle this case correctly yet). Tested with: - RTL8188CUS, RTL8188EU and RTL8821AU, STA / AP modes.
254 lines
6.3 KiB
C
254 lines
6.3 KiB
C
/* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
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/*-
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* Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
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* Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
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* Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/queue.h>
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#include <sys/taskqueue.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usb_device.h>
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#include <net/if.h>
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#include <net/ethernet.h>
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#include <net/if_media.h>
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#include <net80211/ieee80211_var.h>
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#include <dev/rtwn/if_rtwnvar.h>
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#include <dev/rtwn/if_rtwn_debug.h>
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#include <dev/rtwn/usb/rtwn_usb_var.h>
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#include <dev/rtwn/usb/rtwn_usb_ep.h>
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#include <dev/rtwn/usb/rtwn_usb_rx.h>
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#include <dev/rtwn/usb/rtwn_usb_tx.h>
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#include <dev/rtwn/rtl8192c/usb/r92cu_reg.h>
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static struct usb_config rtwn_config[RTWN_N_TRANSFER] = {
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[RTWN_BULK_RX] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_IN,
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.flags = {
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.pipe_bof = 1,
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.short_xfer_ok = 1
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},
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.callback = rtwn_bulk_rx_callback,
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},
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[RTWN_BULK_TX_BE] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_OUT,
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.bufsize = RTWN_TXBUFSZ,
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.flags = {
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.ext_buffer = 1,
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.pipe_bof = 1,
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.force_short_xfer = 1,
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},
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.callback = rtwn_bulk_tx_callback,
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.timeout = RTWN_TX_TIMEOUT, /* ms */
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},
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[RTWN_BULK_TX_BK] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_OUT,
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.bufsize = RTWN_TXBUFSZ,
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.flags = {
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.ext_buffer = 1,
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.pipe_bof = 1,
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.force_short_xfer = 1,
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},
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.callback = rtwn_bulk_tx_callback,
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.timeout = RTWN_TX_TIMEOUT, /* ms */
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},
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[RTWN_BULK_TX_VI] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_OUT,
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.bufsize = RTWN_TXBUFSZ,
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.flags = {
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.ext_buffer = 1,
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.pipe_bof = 1,
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.force_short_xfer = 1
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},
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.callback = rtwn_bulk_tx_callback,
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.timeout = RTWN_TX_TIMEOUT, /* ms */
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},
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[RTWN_BULK_TX_VO] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_OUT,
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.bufsize = RTWN_TXBUFSZ,
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.flags = {
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.ext_buffer = 1,
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.pipe_bof = 1,
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.force_short_xfer = 1
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},
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.callback = rtwn_bulk_tx_callback,
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.timeout = RTWN_TX_TIMEOUT, /* ms */
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},
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};
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static void
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rtwn_usb_setup_queues(struct rtwn_usb_softc *uc)
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{
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struct rtwn_softc *sc = &uc->uc_sc;
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int hasnq, haslq, nqueues, nqpages, nrempages;
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/* Get Tx queues to USB endpoints mapping. */
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hasnq = haslq = 0;
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switch (uc->ntx) {
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case 4:
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case 3:
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haslq = 1;
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/* FALLTHROUGH */
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case 2:
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hasnq = 1;
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/* FALLTHROUGH */
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default:
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break;
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}
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nqueues = 1 + hasnq + haslq;
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/* Get the number of pages for each queue. */
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nqpages = (sc->page_count - sc->npubqpages) / nqueues;
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/*
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* The remaining pages are assigned to the high priority
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* queue.
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*/
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nrempages = (sc->page_count - sc->npubqpages) % nqueues;
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sc->nhqpages = nqpages + nrempages;
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sc->nnqpages = (hasnq ? nqpages : 0);
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sc->nlqpages = (haslq ? nqpages : 0);
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}
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int
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rtwn_usb_setup_endpoints(struct rtwn_usb_softc *uc)
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{
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struct rtwn_softc *sc = &uc->uc_sc;
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const uint8_t iface_index = RTWN_IFACE_INDEX;
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struct usb_endpoint *ep, *ep_end;
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uint8_t addr[RTWN_MAX_EPOUT];
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int error;
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/* Determine the number of bulk-out pipes. */
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uc->ntx = 0;
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ep = uc->uc_udev->endpoints;
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ep_end = uc->uc_udev->endpoints + uc->uc_udev->endpoints_max;
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for (; ep != ep_end; ep++) {
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uint8_t eaddr;
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if ((ep->edesc == NULL) || (ep->iface_index != iface_index))
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continue;
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eaddr = ep->edesc->bEndpointAddress;
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RTWN_DPRINTF(sc, RTWN_DEBUG_USB,
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"%s: endpoint: addr %u, direction %s\n", __func__,
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UE_GET_ADDR(eaddr), UE_GET_DIR(eaddr) == UE_DIR_OUT ?
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"output" : "input");
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if (UE_GET_DIR(eaddr) == UE_DIR_OUT) {
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if (uc->ntx == RTWN_MAX_EPOUT)
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break;
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addr[uc->ntx++] = UE_GET_ADDR(eaddr);
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}
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}
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if (uc->ntx == 0 || uc->ntx > RTWN_MAX_EPOUT) {
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device_printf(sc->sc_dev,
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"%s: invalid number of Tx bulk pipes (%d)\n", __func__,
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uc->ntx);
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return (EINVAL);
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}
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/* NB: keep in sync with rtwn_dma_init(). */
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rtwn_config[RTWN_BULK_TX_VO].endpoint = addr[0];
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switch (uc->ntx) {
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case 4:
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case 3:
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rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[2];
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rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[2];
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rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[1];
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break;
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case 2:
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rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[1];
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rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[1];
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rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0];
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break;
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case 1:
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rtwn_config[RTWN_BULK_TX_BE].endpoint = addr[0];
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rtwn_config[RTWN_BULK_TX_BK].endpoint = addr[0];
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rtwn_config[RTWN_BULK_TX_VI].endpoint = addr[0];
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break;
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default:
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KASSERT(0, ("unhandled number of endpoints %d\n", uc->ntx));
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break;
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}
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rtwn_config[RTWN_BULK_RX].bufsize = sc->rx_dma_size + 1024;
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error = usbd_transfer_setup(uc->uc_udev, &iface_index,
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uc->uc_xfer, rtwn_config, RTWN_N_TRANSFER, uc, &sc->sc_mtx);
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if (error) {
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device_printf(sc->sc_dev, "could not allocate USB transfers, "
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"err=%s\n", usbd_errstr(error));
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return (error);
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}
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/* Assign pages for each queue (if not done). */
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if (sc->nhqpages == 0 && sc->nnqpages == 0 && sc->nlqpages == 0)
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rtwn_usb_setup_queues(uc);
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return (0);
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}
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uint16_t
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rtwn_usb_get_qmap(struct rtwn_softc *sc)
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{
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struct rtwn_usb_softc *uc = RTWN_USB_SOFTC(sc);
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switch (uc->ntx) {
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case 1:
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return (R92C_TRXDMA_CTRL_QMAP_HQ);
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case 2:
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return (R92C_TRXDMA_CTRL_QMAP_HQ_NQ);
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default:
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return (R92C_TRXDMA_CTRL_QMAP_3EP);
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}
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}
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