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#include <machine/rtems-bsd-kernel-space.h>
/* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
/*-
* Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
* Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
* Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <rtems/bsd/sys/lock.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <net/if_media.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/rtwn/if_rtwnvar.h>
#include <dev/rtwn/if_rtwn_debug.h>
#include <dev/rtwn/usb/rtwn_usb_var.h>
#include <dev/rtwn/usb/rtwn_usb_reg.h>
static int rtwn_do_request(struct rtwn_softc *,
struct usb_device_request *, void *);
static int rtwn_usb_read_region_1(struct rtwn_softc *,
uint16_t, uint8_t *, int);
/* USB Requests. */
#define R92C_REQ_REGS 0x05
static int
rtwn_do_request(struct rtwn_softc *sc, struct usb_device_request *req,
void *data)
{
struct rtwn_usb_softc *uc = RTWN_USB_SOFTC(sc);
usb_error_t err;
int ntries = 10;
RTWN_ASSERT_LOCKED(sc);
while (ntries--) {
err = usbd_do_request_flags(uc->uc_udev, &sc->sc_mtx,
req, data, 0, NULL, 250 /* ms */);
if (err == USB_ERR_NORMAL_COMPLETION)
return (0);
RTWN_DPRINTF(sc, RTWN_DEBUG_USB,
"%s: control request failed, %s (retries left: %d)\n",
__func__, usbd_errstr(err), ntries);
if (err == USB_ERR_NOT_CONFIGURED)
return (ENXIO);
usb_pause_mtx(&sc->sc_mtx, hz / 100);
}
return (EIO);
}
/* export for rtwn_fw_write_block() */
int
rtwn_usb_write_region_1(struct rtwn_softc *sc, uint16_t addr, uint8_t *buf,
int len)
{
usb_device_request_t req;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = R92C_REQ_REGS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
return (rtwn_do_request(sc, &req, buf));
}
int
rtwn_usb_write_1(struct rtwn_softc *sc, uint16_t addr, uint8_t val)
{
return (rtwn_usb_write_region_1(sc, addr, &val, sizeof(val)));
}
int
rtwn_usb_write_2(struct rtwn_softc *sc, uint16_t addr, uint16_t val)
{
val = htole16(val);
return (rtwn_usb_write_region_1(sc, addr, (uint8_t *)&val, sizeof(val)));
}
int
rtwn_usb_write_4(struct rtwn_softc *sc, uint16_t addr, uint32_t val)
{
val = htole32(val);
return (rtwn_usb_write_region_1(sc, addr, (uint8_t *)&val, sizeof(val)));
}
static int
rtwn_usb_read_region_1(struct rtwn_softc *sc, uint16_t addr, uint8_t *buf,
int len)
{
usb_device_request_t req;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = R92C_REQ_REGS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
return (rtwn_do_request(sc, &req, buf));
}
uint8_t
rtwn_usb_read_1(struct rtwn_softc *sc, uint16_t addr)
{
uint8_t val;
if (rtwn_usb_read_region_1(sc, addr, &val, 1) != 0)
return (0xff);
return (val);
}
uint16_t
rtwn_usb_read_2(struct rtwn_softc *sc, uint16_t addr)
{
uint16_t val;
if (rtwn_usb_read_region_1(sc, addr, (uint8_t *)&val, 2) != 0)
return (0xffff);
return (le16toh(val));
}
uint32_t
rtwn_usb_read_4(struct rtwn_softc *sc, uint16_t addr)
{
uint32_t val;
if (rtwn_usb_read_region_1(sc, addr, (uint8_t *)&val, 4) != 0)
return (0xffffffff);
return (le32toh(val));
}
void
rtwn_usb_delay(struct rtwn_softc *sc, int usec)
{
/* 1ms delay as default is too big. */
if (usec < 1000)
DELAY(usec);
else {
usb_pause_mtx(&sc->sc_mtx,
MAX(msecs_to_ticks(usec / 1000), 1));
}
}
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