177 lines
4.4 KiB
C
177 lines
4.4 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 <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/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 <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 <net80211/ieee80211_radiotap.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/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_reg.h>
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static int rtwn_do_request(struct rtwn_softc *,
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struct usb_device_request *, void *);
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static int rtwn_usb_read_region_1(struct rtwn_softc *,
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uint16_t, uint8_t *, int);
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/* USB Requests. */
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#define R92C_REQ_REGS 0x05
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static int
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rtwn_do_request(struct rtwn_softc *sc, struct usb_device_request *req,
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void *data)
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{
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struct rtwn_usb_softc *uc = RTWN_USB_SOFTC(sc);
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usb_error_t err;
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int ntries = 10;
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RTWN_ASSERT_LOCKED(sc);
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while (ntries--) {
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err = usbd_do_request_flags(uc->uc_udev, &sc->sc_mtx,
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req, data, 0, NULL, 250 /* ms */);
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if (err == USB_ERR_NORMAL_COMPLETION)
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return (0);
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RTWN_DPRINTF(sc, RTWN_DEBUG_USB,
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"%s: control request failed, %s (retries left: %d)\n",
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__func__, usbd_errstr(err), ntries);
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if (err == USB_ERR_NOT_CONFIGURED)
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return (ENXIO);
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usb_pause_mtx(&sc->sc_mtx, hz / 100);
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}
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return (EIO);
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}
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/* export for rtwn_fw_write_block() */
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int
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rtwn_usb_write_region_1(struct rtwn_softc *sc, uint16_t addr, uint8_t *buf,
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int len)
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{
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usb_device_request_t req;
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = R92C_REQ_REGS;
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USETW(req.wValue, addr);
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USETW(req.wIndex, 0);
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USETW(req.wLength, len);
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return (rtwn_do_request(sc, &req, buf));
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}
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int
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rtwn_usb_write_1(struct rtwn_softc *sc, uint16_t addr, uint8_t val)
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{
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return (rtwn_usb_write_region_1(sc, addr, &val, sizeof(val)));
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}
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int
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rtwn_usb_write_2(struct rtwn_softc *sc, uint16_t addr, uint16_t val)
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{
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val = htole16(val);
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return (rtwn_usb_write_region_1(sc, addr, (uint8_t *)&val, sizeof(val)));
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}
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int
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rtwn_usb_write_4(struct rtwn_softc *sc, uint16_t addr, uint32_t val)
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{
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val = htole32(val);
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return (rtwn_usb_write_region_1(sc, addr, (uint8_t *)&val, sizeof(val)));
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}
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static int
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rtwn_usb_read_region_1(struct rtwn_softc *sc, uint16_t addr, uint8_t *buf,
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int len)
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{
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usb_device_request_t req;
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = R92C_REQ_REGS;
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USETW(req.wValue, addr);
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USETW(req.wIndex, 0);
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USETW(req.wLength, len);
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return (rtwn_do_request(sc, &req, buf));
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}
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uint8_t
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rtwn_usb_read_1(struct rtwn_softc *sc, uint16_t addr)
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{
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uint8_t val;
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if (rtwn_usb_read_region_1(sc, addr, &val, 1) != 0)
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return (0xff);
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return (val);
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}
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uint16_t
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rtwn_usb_read_2(struct rtwn_softc *sc, uint16_t addr)
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{
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uint16_t val;
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if (rtwn_usb_read_region_1(sc, addr, (uint8_t *)&val, 2) != 0)
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return (0xffff);
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return (le16toh(val));
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}
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uint32_t
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rtwn_usb_read_4(struct rtwn_softc *sc, uint16_t addr)
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{
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uint32_t val;
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if (rtwn_usb_read_region_1(sc, addr, (uint8_t *)&val, 4) != 0)
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return (0xffffffff);
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return (le32toh(val));
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}
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void
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rtwn_usb_delay(struct rtwn_softc *sc, int usec)
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{
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/* 1ms delay as default is too big. */
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if (usec < 1000)
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DELAY(usec);
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else
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usb_pause_mtx(&sc->sc_mtx, msecs_to_ticks(usec / 1000));
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}
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