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freebsd-dev/sys/dev/usb/wlan/if_rsu.c

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/* $OpenBSD: if_rsu.c,v 1.17 2013/04/15 09:23:01 mglocker Exp $ */
/*-
* Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
*
* 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("$FreeBSD$");
/*
* Driver for Realtek RTL8188SU/RTL8191SU/RTL8192SU.
*
* TODO:
* o 11n support
* o h/w crypto
* o hostap / ibss / mesh
*/
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/firmware.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_radiotap.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include "usbdevs.h"
#define USB_DEBUG_VAR rsu_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/wlan/if_rsureg.h>
#ifdef USB_DEBUG
static int rsu_debug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, rsu, CTLFLAG_RW, 0, "USB rsu");
SYSCTL_INT(_hw_usb_rsu, OID_AUTO, debug, CTLFLAG_RW, &rsu_debug, 0,
"Debug level");
#endif
static const STRUCT_USB_HOST_ID rsu_devs[] = {
#define RSU_HT_NOT_SUPPORTED 0
#define RSU_HT_SUPPORTED 1
#define RSU_DEV_HT(v,p) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, \
RSU_HT_SUPPORTED) }
#define RSU_DEV(v,p) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, \
RSU_HT_NOT_SUPPORTED) }
RSU_DEV(ASUS, RTL8192SU),
RSU_DEV(AZUREWAVE, RTL8192SU_4),
RSU_DEV_HT(ACCTON, RTL8192SU),
RSU_DEV_HT(ASUS, USBN10),
RSU_DEV_HT(AZUREWAVE, RTL8192SU_1),
RSU_DEV_HT(AZUREWAVE, RTL8192SU_2),
RSU_DEV_HT(AZUREWAVE, RTL8192SU_3),
RSU_DEV_HT(AZUREWAVE, RTL8192SU_5),
RSU_DEV_HT(BELKIN, RTL8192SU_1),
RSU_DEV_HT(BELKIN, RTL8192SU_2),
RSU_DEV_HT(BELKIN, RTL8192SU_3),
RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_1),
RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_2),
RSU_DEV_HT(CONCEPTRONIC2, RTL8192SU_3),
RSU_DEV_HT(COREGA, RTL8192SU),
RSU_DEV_HT(DLINK2, DWA131A1),
RSU_DEV_HT(DLINK2, RTL8192SU_1),
RSU_DEV_HT(DLINK2, RTL8192SU_2),
RSU_DEV_HT(EDIMAX, RTL8192SU_1),
RSU_DEV_HT(EDIMAX, RTL8192SU_2),
RSU_DEV_HT(EDIMAX, EW7622UMN),
RSU_DEV_HT(GUILLEMOT, HWGUN54),
RSU_DEV_HT(GUILLEMOT, HWNUM300),
RSU_DEV_HT(HAWKING, RTL8192SU_1),
RSU_DEV_HT(HAWKING, RTL8192SU_2),
RSU_DEV_HT(PLANEX2, GWUSNANO),
RSU_DEV_HT(REALTEK, RTL8171),
RSU_DEV_HT(REALTEK, RTL8172),
RSU_DEV_HT(REALTEK, RTL8173),
RSU_DEV_HT(REALTEK, RTL8174),
RSU_DEV_HT(REALTEK, RTL8192SU),
RSU_DEV_HT(REALTEK, RTL8712),
RSU_DEV_HT(REALTEK, RTL8713),
RSU_DEV_HT(SENAO, RTL8192SU_1),
RSU_DEV_HT(SENAO, RTL8192SU_2),
RSU_DEV_HT(SITECOMEU, WL349V1),
RSU_DEV_HT(SITECOMEU, WL353),
RSU_DEV_HT(SWEEX2, LW154),
#undef RSU_DEV_HT
#undef RSU_DEV
};
static device_probe_t rsu_match;
static device_attach_t rsu_attach;
static device_detach_t rsu_detach;
static usb_callback_t rsu_bulk_tx_callback;
static usb_callback_t rsu_bulk_rx_callback;
static usb_error_t rsu_do_request(struct rsu_softc *,
struct usb_device_request *, void *);
static struct ieee80211vap *
rsu_vap_create(struct ieee80211com *, const char name[],
int, enum ieee80211_opmode, int, const uint8_t bssid[],
const uint8_t mac[]);
static void rsu_vap_delete(struct ieee80211vap *);
static void rsu_scan_start(struct ieee80211com *);
static void rsu_scan_end(struct ieee80211com *);
static void rsu_set_channel(struct ieee80211com *);
static void rsu_update_mcast(struct ifnet *);
static int rsu_alloc_rx_list(struct rsu_softc *);
static void rsu_free_rx_list(struct rsu_softc *);
static int rsu_alloc_tx_list(struct rsu_softc *);
static void rsu_free_tx_list(struct rsu_softc *);
static void rsu_free_list(struct rsu_softc *, struct rsu_data [], int);
static struct rsu_data *_rsu_getbuf(struct rsu_softc *);
static struct rsu_data *rsu_getbuf(struct rsu_softc *);
static int rsu_write_region_1(struct rsu_softc *, uint16_t, uint8_t *,
int);
static void rsu_write_1(struct rsu_softc *, uint16_t, uint8_t);
static void rsu_write_2(struct rsu_softc *, uint16_t, uint16_t);
static void rsu_write_4(struct rsu_softc *, uint16_t, uint32_t);
static int rsu_read_region_1(struct rsu_softc *, uint16_t, uint8_t *,
int);
static uint8_t rsu_read_1(struct rsu_softc *, uint16_t);
static uint16_t rsu_read_2(struct rsu_softc *, uint16_t);
static uint32_t rsu_read_4(struct rsu_softc *, uint16_t);
static int rsu_fw_iocmd(struct rsu_softc *, uint32_t);
static uint8_t rsu_efuse_read_1(struct rsu_softc *, uint16_t);
static int rsu_read_rom(struct rsu_softc *);
static int rsu_fw_cmd(struct rsu_softc *, uint8_t, void *, int);
static void rsu_calib_task(void *, int);
static int rsu_newstate(struct ieee80211vap *, enum ieee80211_state, int);
#ifdef notyet
static void rsu_set_key(struct rsu_softc *, const struct ieee80211_key *);
static void rsu_delete_key(struct rsu_softc *, const struct ieee80211_key *);
#endif
static int rsu_site_survey(struct rsu_softc *, struct ieee80211vap *);
static int rsu_join_bss(struct rsu_softc *, struct ieee80211_node *);
static int rsu_disconnect(struct rsu_softc *);
static void rsu_event_survey(struct rsu_softc *, uint8_t *, int);
static void rsu_event_join_bss(struct rsu_softc *, uint8_t *, int);
static void rsu_rx_event(struct rsu_softc *, uint8_t, uint8_t *, int);
static void rsu_rx_multi_event(struct rsu_softc *, uint8_t *, int);
static int8_t rsu_get_rssi(struct rsu_softc *, int, void *);
static struct mbuf *
rsu_rx_frame(struct rsu_softc *, uint8_t *, int, int *);
static struct mbuf *
rsu_rx_multi_frame(struct rsu_softc *, uint8_t *, int, int *);
static struct mbuf *
rsu_rxeof(struct usb_xfer *, struct rsu_data *, int *);
static void rsu_txeof(struct usb_xfer *, struct rsu_data *);
static int rsu_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
static void rsu_init(void *);
static void rsu_init_locked(struct rsu_softc *);
static void rsu_watchdog(void *);
static int rsu_tx_start(struct rsu_softc *, struct ieee80211_node *,
struct mbuf *, struct rsu_data *);
static void rsu_start(struct ifnet *);
static void rsu_start_locked(struct ifnet *);
static int rsu_ioctl(struct ifnet *, u_long, caddr_t);
static void rsu_stop(struct ifnet *, int);
static void rsu_stop_locked(struct ifnet *, int);
static device_method_t rsu_methods[] = {
DEVMETHOD(device_probe, rsu_match),
DEVMETHOD(device_attach, rsu_attach),
DEVMETHOD(device_detach, rsu_detach),
DEVMETHOD_END
};
static driver_t rsu_driver = {
.name = "rsu",
.methods = rsu_methods,
.size = sizeof(struct rsu_softc)
};
static devclass_t rsu_devclass;
DRIVER_MODULE(rsu, uhub, rsu_driver, rsu_devclass, NULL, 0);
MODULE_DEPEND(rsu, wlan, 1, 1, 1);
MODULE_DEPEND(rsu, usb, 1, 1, 1);
MODULE_DEPEND(rsu, firmware, 1, 1, 1);
MODULE_VERSION(rsu, 1);
static const struct usb_config rsu_config[RSU_N_TRANSFER] = {
[RSU_BULK_RX] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = RSU_RXBUFSZ,
.flags = {
.pipe_bof = 1,
.short_xfer_ok = 1
},
.callback = rsu_bulk_rx_callback
},
[RSU_BULK_TX_BE] = {
.type = UE_BULK,
.endpoint = 0x06,
.direction = UE_DIR_OUT,
.bufsize = RSU_TXBUFSZ,
.flags = {
.ext_buffer = 1,
.pipe_bof = 1,
.force_short_xfer = 1
},
.callback = rsu_bulk_tx_callback,
.timeout = RSU_TX_TIMEOUT
},
[RSU_BULK_TX_BK] = {
.type = UE_BULK,
.endpoint = 0x06,
.direction = UE_DIR_OUT,
.bufsize = RSU_TXBUFSZ,
.flags = {
.ext_buffer = 1,
.pipe_bof = 1,
.force_short_xfer = 1
},
.callback = rsu_bulk_tx_callback,
.timeout = RSU_TX_TIMEOUT
},
[RSU_BULK_TX_VI] = {
.type = UE_BULK,
.endpoint = 0x04,
.direction = UE_DIR_OUT,
.bufsize = RSU_TXBUFSZ,
.flags = {
.ext_buffer = 1,
.pipe_bof = 1,
.force_short_xfer = 1
},
.callback = rsu_bulk_tx_callback,
.timeout = RSU_TX_TIMEOUT
},
[RSU_BULK_TX_VO] = {
.type = UE_BULK,
.endpoint = 0x04,
.direction = UE_DIR_OUT,
.bufsize = RSU_TXBUFSZ,
.flags = {
.ext_buffer = 1,
.pipe_bof = 1,
.force_short_xfer = 1
},
.callback = rsu_bulk_tx_callback,
.timeout = RSU_TX_TIMEOUT
},
};
static int
rsu_match(device_t self)
{
struct usb_attach_arg *uaa = device_get_ivars(self);
if (uaa->usb_mode != USB_MODE_HOST ||
uaa->info.bIfaceIndex != 0 ||
uaa->info.bConfigIndex != 0)
return (ENXIO);
return (usbd_lookup_id_by_uaa(rsu_devs, sizeof(rsu_devs), uaa));
}
static int
rsu_attach(device_t self)
{
struct usb_attach_arg *uaa = device_get_ivars(self);
struct rsu_softc *sc = device_get_softc(self);
struct ifnet *ifp;
struct ieee80211com *ic;
int error;
uint8_t iface_index, bands;
device_set_usb_desc(self);
sc->sc_udev = uaa->device;
sc->sc_dev = self;
mtx_init(&sc->sc_mtx, device_get_nameunit(self), MTX_NETWORK_LOCK,
MTX_DEF);
TIMEOUT_TASK_INIT(taskqueue_thread, &sc->calib_task, 0,
rsu_calib_task, sc);
callout_init(&sc->sc_watchdog_ch, 0);
iface_index = 0;
error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
rsu_config, RSU_N_TRANSFER, sc, &sc->sc_mtx);
if (error) {
device_printf(sc->sc_dev,
"could not allocate USB transfers, err=%s\n",
usbd_errstr(error));
goto fail_usb;
}
RSU_LOCK(sc);
/* Read chip revision. */
sc->cut = MS(rsu_read_4(sc, R92S_PMC_FSM), R92S_PMC_FSM_CUT);
if (sc->cut != 3)
sc->cut = (sc->cut >> 1) + 1;
error = rsu_read_rom(sc);
if (error != 0) {
device_printf(self, "could not read ROM\n");
goto fail_rom;
}
RSU_UNLOCK(sc);
IEEE80211_ADDR_COPY(sc->sc_bssid, &sc->rom[0x12]);
device_printf(self, "MAC/BB RTL8712 cut %d\n", sc->cut);
ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
if (ifp == NULL) {
device_printf(self, "cannot allocate interface\n");
goto fail_ifalloc;
}
ic = ifp->if_l2com;
ifp->if_softc = sc;
if_initname(ifp, "rsu", device_get_unit(self));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_init = rsu_init;
ifp->if_ioctl = rsu_ioctl;
ifp->if_start = rsu_start;
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
IFQ_SET_READY(&ifp->if_snd);
ifp->if_capabilities |= IFCAP_RXCSUM;
ifp->if_capenable |= IFCAP_RXCSUM;
ifp->if_hwassist = CSUM_TCP;
ic->ic_ifp = ifp;
ic->ic_phytype = IEEE80211_T_OFDM; /* Not only, but not used. */
ic->ic_opmode = IEEE80211_M_STA; /* Default to BSS mode. */
/* Set device capabilities. */
ic->ic_caps =
IEEE80211_C_STA | /* station mode */
IEEE80211_C_BGSCAN | /* Background scan. */
IEEE80211_C_SHPREAMBLE | /* Short preamble supported. */
IEEE80211_C_SHSLOT | /* Short slot time supported. */
IEEE80211_C_WPA; /* WPA/RSN. */
#if 0
/* Check if HT support is present. */
if (usb_lookup(rsu_devs_noht, uaa->vendor, uaa->product) == NULL) {
/* Set HT capabilities. */
ic->ic_htcaps =
IEEE80211_HTCAP_CBW20_40 |
IEEE80211_HTCAP_DSSSCCK40;
/* Set supported HT rates. */
for (i = 0; i < 2; i++)
ic->ic_sup_mcs[i] = 0xff;
}
#endif
/* Set supported .11b and .11g rates. */
bands = 0;
setbit(&bands, IEEE80211_MODE_11B);
setbit(&bands, IEEE80211_MODE_11G);
ieee80211_init_channels(ic, NULL, &bands);
ieee80211_ifattach(ic, sc->sc_bssid);
ic->ic_raw_xmit = rsu_raw_xmit;
ic->ic_scan_start = rsu_scan_start;
ic->ic_scan_end = rsu_scan_end;
ic->ic_set_channel = rsu_set_channel;
ic->ic_vap_create = rsu_vap_create;
ic->ic_vap_delete = rsu_vap_delete;
ic->ic_update_mcast = rsu_update_mcast;
ieee80211_radiotap_attach(ic, &sc->sc_txtap.wt_ihdr,
sizeof(sc->sc_txtap), RSU_TX_RADIOTAP_PRESENT,
&sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
RSU_RX_RADIOTAP_PRESENT);
if (bootverbose)
ieee80211_announce(ic);
return (0);
fail_ifalloc:
fail_rom:
usbd_transfer_unsetup(sc->sc_xfer, RSU_N_TRANSFER);
fail_usb:
mtx_destroy(&sc->sc_mtx);
return (ENXIO);
}
static int
rsu_detach(device_t self)
{
struct rsu_softc *sc = device_get_softc(self);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
if (!device_is_attached(self))
return (0);
rsu_stop(ifp, 1);
usbd_transfer_unsetup(sc->sc_xfer, RSU_N_TRANSFER);
ieee80211_ifdetach(ic);
callout_drain(&sc->sc_watchdog_ch);
taskqueue_drain_timeout(taskqueue_thread, &sc->calib_task);
/* Free Tx/Rx buffers. */
rsu_free_tx_list(sc);
rsu_free_rx_list(sc);
if_free(ifp);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static usb_error_t
rsu_do_request(struct rsu_softc *sc, struct usb_device_request *req,
void *data)
{
usb_error_t err;
int ntries = 10;
RSU_ASSERT_LOCKED(sc);
while (ntries--) {
err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx,
req, data, 0, NULL, 250 /* ms */);
if (err == 0 || !device_is_attached(sc->sc_dev))
break;
DPRINTFN(1, "Control request failed, %s (retrying)\n",
usbd_errstr(err));
usb_pause_mtx(&sc->sc_mtx, hz / 100);
}
return (err);
}
static struct ieee80211vap *
rsu_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
enum ieee80211_opmode opmode, int flags,
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct rsu_vap *uvp;
struct ieee80211vap *vap;
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
return (NULL);
uvp = (struct rsu_vap *) malloc(sizeof(struct rsu_vap),
M_80211_VAP, M_NOWAIT | M_ZERO);
if (uvp == NULL)
return (NULL);
vap = &uvp->vap;
if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
flags, bssid, mac) != 0) {
/* out of memory */
free(uvp, M_80211_VAP);
return (NULL);
}
/* override state transition machine */
uvp->newstate = vap->iv_newstate;
vap->iv_newstate = rsu_newstate;
/* complete setup */
ieee80211_vap_attach(vap, ieee80211_media_change,
ieee80211_media_status);
ic->ic_opmode = opmode;
return (vap);
}
static void
rsu_vap_delete(struct ieee80211vap *vap)
{
struct rsu_vap *uvp = RSU_VAP(vap);
ieee80211_vap_detach(vap);
free(uvp, M_80211_VAP);
}
static void
rsu_scan_start(struct ieee80211com *ic)
{
int error;
struct ifnet *ifp = ic->ic_ifp;
struct rsu_softc *sc = ifp->if_softc;
/* Scanning is done by the firmware. */
RSU_LOCK(sc);
error = rsu_site_survey(sc, TAILQ_FIRST(&ic->ic_vaps));
RSU_UNLOCK(sc);
if (error != 0)
device_printf(sc->sc_dev,
"could not send site survey command\n");
}
static void
rsu_scan_end(struct ieee80211com *ic)
{
/* Nothing to do here. */
}
static void
rsu_set_channel(struct ieee80211com *ic __unused)
{
/* We are unable to switch channels, yet. */
}
static void
rsu_update_mcast(struct ifnet *ifp)
{
/* XXX do nothing? */
}
static int
rsu_alloc_list(struct rsu_softc *sc, struct rsu_data data[],
int ndata, int maxsz)
{
int i, error;
for (i = 0; i < ndata; i++) {
struct rsu_data *dp = &data[i];
dp->sc = sc;
dp->m = NULL;
dp->buf = malloc(maxsz, M_USBDEV, M_NOWAIT);
if (dp->buf == NULL) {
device_printf(sc->sc_dev,
"could not allocate buffer\n");
error = ENOMEM;
goto fail;
}
dp->ni = NULL;
}
return (0);
fail:
rsu_free_list(sc, data, ndata);
return (error);
}
static int
rsu_alloc_rx_list(struct rsu_softc *sc)
{
int error, i;
error = rsu_alloc_list(sc, sc->sc_rx, RSU_RX_LIST_COUNT,
RSU_RXBUFSZ);
if (error != 0)
return (error);
STAILQ_INIT(&sc->sc_rx_active);
STAILQ_INIT(&sc->sc_rx_inactive);
for (i = 0; i < RSU_RX_LIST_COUNT; i++)
STAILQ_INSERT_HEAD(&sc->sc_rx_inactive, &sc->sc_rx[i], next);
return (0);
}
static int
rsu_alloc_tx_list(struct rsu_softc *sc)
{
int error, i;
error = rsu_alloc_list(sc, sc->sc_tx, RSU_TX_LIST_COUNT,
RSU_TXBUFSZ);
if (error != 0)
return (error);
STAILQ_INIT(&sc->sc_tx_active);
STAILQ_INIT(&sc->sc_tx_inactive);
STAILQ_INIT(&sc->sc_tx_pending);
for (i = 0; i < RSU_TX_LIST_COUNT; i++) {
STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, &sc->sc_tx[i], next);
}
return (0);
}
static void
rsu_free_tx_list(struct rsu_softc *sc)
{
rsu_free_list(sc, sc->sc_tx, RSU_TX_LIST_COUNT);
}
static void
rsu_free_rx_list(struct rsu_softc *sc)
{
rsu_free_list(sc, sc->sc_rx, RSU_RX_LIST_COUNT);
}
static void
rsu_free_list(struct rsu_softc *sc, struct rsu_data data[], int ndata)
{
int i;
for (i = 0; i < ndata; i++) {
struct rsu_data *dp = &data[i];
if (dp->buf != NULL) {
free(dp->buf, M_USBDEV);
dp->buf = NULL;
}
if (dp->ni != NULL) {
ieee80211_free_node(dp->ni);
dp->ni = NULL;
}
}
}
static struct rsu_data *
_rsu_getbuf(struct rsu_softc *sc)
{
struct rsu_data *bf;
bf = STAILQ_FIRST(&sc->sc_tx_inactive);
if (bf != NULL)
STAILQ_REMOVE_HEAD(&sc->sc_tx_inactive, next);
else
bf = NULL;
if (bf == NULL)
DPRINTF("out of xmit buffers\n");
return (bf);
}
static struct rsu_data *
rsu_getbuf(struct rsu_softc *sc)
{
struct rsu_data *bf;
RSU_ASSERT_LOCKED(sc);
bf = _rsu_getbuf(sc);
if (bf == NULL) {
struct ifnet *ifp = sc->sc_ifp;
DPRINTF("stop queue\n");
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
}
return (bf);
}
static int
rsu_write_region_1(struct rsu_softc *sc, uint16_t addr, uint8_t *buf,
int len)
{
usb_device_request_t req;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = R92S_REQ_REGS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
return (rsu_do_request(sc, &req, buf));
}
static void
rsu_write_1(struct rsu_softc *sc, uint16_t addr, uint8_t val)
{
rsu_write_region_1(sc, addr, &val, 1);
}
static void
rsu_write_2(struct rsu_softc *sc, uint16_t addr, uint16_t val)
{
val = htole16(val);
rsu_write_region_1(sc, addr, (uint8_t *)&val, 2);
}
static void
rsu_write_4(struct rsu_softc *sc, uint16_t addr, uint32_t val)
{
val = htole32(val);
rsu_write_region_1(sc, addr, (uint8_t *)&val, 4);
}
static int
rsu_read_region_1(struct rsu_softc *sc, uint16_t addr, uint8_t *buf,
int len)
{
usb_device_request_t req;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = R92S_REQ_REGS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
return (rsu_do_request(sc, &req, buf));
}
static uint8_t
rsu_read_1(struct rsu_softc *sc, uint16_t addr)
{
uint8_t val;
if (rsu_read_region_1(sc, addr, &val, 1) != 0)
return (0xff);
return (val);
}
static uint16_t
rsu_read_2(struct rsu_softc *sc, uint16_t addr)
{
uint16_t val;
if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 2) != 0)
return (0xffff);
return (le16toh(val));
}
static uint32_t
rsu_read_4(struct rsu_softc *sc, uint16_t addr)
{
uint32_t val;
if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 4) != 0)
return (0xffffffff);
return (le32toh(val));
}
static int
rsu_fw_iocmd(struct rsu_softc *sc, uint32_t iocmd)
{
int ntries;
rsu_write_4(sc, R92S_IOCMD_CTRL, iocmd);
DELAY(100);
for (ntries = 0; ntries < 50; ntries++) {
if (rsu_read_4(sc, R92S_IOCMD_CTRL) == 0)
return (0);
DELAY(10);
}
return (ETIMEDOUT);
}
static uint8_t
rsu_efuse_read_1(struct rsu_softc *sc, uint16_t addr)
{
uint32_t reg;
int ntries;
reg = rsu_read_4(sc, R92S_EFUSE_CTRL);
reg = RW(reg, R92S_EFUSE_CTRL_ADDR, addr);
reg &= ~R92S_EFUSE_CTRL_VALID;
rsu_write_4(sc, R92S_EFUSE_CTRL, reg);
/* Wait for read operation to complete. */
for (ntries = 0; ntries < 100; ntries++) {
reg = rsu_read_4(sc, R92S_EFUSE_CTRL);
if (reg & R92S_EFUSE_CTRL_VALID)
return (MS(reg, R92S_EFUSE_CTRL_DATA));
DELAY(5);
}
device_printf(sc->sc_dev,
"could not read efuse byte at address 0x%x\n", addr);
return (0xff);
}
static int
rsu_read_rom(struct rsu_softc *sc)
{
uint8_t *rom = sc->rom;
uint16_t addr = 0;
uint32_t reg;
uint8_t off, msk;
int i;
/* Make sure that ROM type is eFuse and that autoload succeeded. */
reg = rsu_read_1(sc, R92S_EE_9346CR);
if ((reg & (R92S_9356SEL | R92S_EEPROM_EN)) != R92S_EEPROM_EN)
return (EIO);
/* Turn on 2.5V to prevent eFuse leakage. */
reg = rsu_read_1(sc, R92S_EFUSE_TEST + 3);
rsu_write_1(sc, R92S_EFUSE_TEST + 3, reg | 0x80);
DELAY(1000);
rsu_write_1(sc, R92S_EFUSE_TEST + 3, reg & ~0x80);
/* Read full ROM image. */
memset(&sc->rom, 0xff, sizeof(sc->rom));
while (addr < 512) {
reg = rsu_efuse_read_1(sc, addr);
if (reg == 0xff)
break;
addr++;
off = reg >> 4;
msk = reg & 0xf;
for (i = 0; i < 4; i++) {
if (msk & (1 << i))
continue;
rom[off * 8 + i * 2 + 0] =
rsu_efuse_read_1(sc, addr);
addr++;
rom[off * 8 + i * 2 + 1] =
rsu_efuse_read_1(sc, addr);
addr++;
}
}
#ifdef USB_DEBUG
if (rsu_debug >= 5) {
/* Dump ROM content. */
printf("\n");
for (i = 0; i < sizeof(sc->rom); i++)
printf("%02x:", rom[i]);
printf("\n");
}
#endif
return (0);
}
static int
rsu_fw_cmd(struct rsu_softc *sc, uint8_t code, void *buf, int len)
{
struct rsu_data *data;
struct r92s_tx_desc *txd;
struct r92s_fw_cmd_hdr *cmd;
int cmdsz, xferlen;
data = rsu_getbuf(sc);
if (data == NULL)
return (ENOMEM);
/* Round-up command length to a multiple of 8 bytes. */
cmdsz = (len + 7) & ~7;
xferlen = sizeof(*txd) + sizeof(*cmd) + cmdsz;
KASSERT(xferlen <= RSU_TXBUFSZ, ("%s: invalid length", __func__));
memset(data->buf, 0, xferlen);
/* Setup Tx descriptor. */
txd = (struct r92s_tx_desc *)data->buf;
txd->txdw0 = htole32(
SM(R92S_TXDW0_OFFSET, sizeof(*txd)) |
SM(R92S_TXDW0_PKTLEN, sizeof(*cmd) + cmdsz) |
R92S_TXDW0_OWN | R92S_TXDW0_FSG | R92S_TXDW0_LSG);
txd->txdw1 = htole32(SM(R92S_TXDW1_QSEL, R92S_TXDW1_QSEL_H2C));
/* Setup command header. */
cmd = (struct r92s_fw_cmd_hdr *)&txd[1];
cmd->len = htole16(cmdsz);
cmd->code = code;
cmd->seq = sc->cmd_seq;
sc->cmd_seq = (sc->cmd_seq + 1) & 0x7f;
/* Copy command payload. */
memcpy(&cmd[1], buf, len);
DPRINTFN(2, "Tx cmd code=0x%x len=0x%x\n", code, cmdsz);
data->buflen = xferlen;
STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
usbd_transfer_start(sc->sc_xfer[RSU_BULK_TX_VO]);
return (0);
}
/* ARGSUSED */
static void
rsu_calib_task(void *arg, int pending __unused)
{
struct rsu_softc *sc = arg;
uint32_t reg;
DPRINTFN(6, "running calibration task\n");
RSU_LOCK(sc);
#ifdef notyet
/* Read WPS PBC status. */
rsu_write_1(sc, R92S_MAC_PINMUX_CTRL,
R92S_GPIOMUX_EN | SM(R92S_GPIOSEL_GPIO, R92S_GPIOSEL_GPIO_JTAG));
rsu_write_1(sc, R92S_GPIO_IO_SEL,
rsu_read_1(sc, R92S_GPIO_IO_SEL) & ~R92S_GPIO_WPS);
reg = rsu_read_1(sc, R92S_GPIO_CTRL);
if (reg != 0xff && (reg & R92S_GPIO_WPS))
DPRINTF(("WPS PBC is pushed\n"));
#endif
/* Read current signal level. */
if (rsu_fw_iocmd(sc, 0xf4000001) == 0) {
reg = rsu_read_4(sc, R92S_IOCMD_DATA);
DPRINTFN(8, "RSSI=%d%%\n", reg >> 4);
}
if (sc->sc_calibrating) {
RSU_UNLOCK(sc);
taskqueue_enqueue_timeout(taskqueue_thread, &sc->calib_task,
hz * 2);
} else
RSU_UNLOCK(sc);
}
static int
rsu_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct rsu_vap *uvp = RSU_VAP(vap);
struct ieee80211com *ic = vap->iv_ic;
struct rsu_softc *sc = ic->ic_ifp->if_softc;
struct ieee80211_node *ni;
struct ieee80211_rateset *rs;
enum ieee80211_state ostate;
int error, startcal = 0;
ostate = vap->iv_state;
DPRINTF("%s -> %s\n", ieee80211_state_name[ostate],
ieee80211_state_name[nstate]);
IEEE80211_UNLOCK(ic);
if (ostate == IEEE80211_S_RUN) {
RSU_LOCK(sc);
/* Stop calibration. */
sc->sc_calibrating = 0;
RSU_UNLOCK(sc);
taskqueue_drain_timeout(taskqueue_thread, &sc->calib_task);
/* Disassociate from our current BSS. */
RSU_LOCK(sc);
rsu_disconnect(sc);
} else
RSU_LOCK(sc);
switch (nstate) {
case IEEE80211_S_INIT:
break;
case IEEE80211_S_AUTH:
ni = ieee80211_ref_node(vap->iv_bss);
error = rsu_join_bss(sc, ni);
ieee80211_free_node(ni);
if (error != 0) {
device_printf(sc->sc_dev,
"could not send join command\n");
}
break;
case IEEE80211_S_RUN:
ni = ieee80211_ref_node(vap->iv_bss);
rs = &ni->ni_rates;
/* Indicate highest supported rate. */
ni->ni_txrate = rs->rs_rates[rs->rs_nrates - 1];
ieee80211_free_node(ni);
startcal = 1;
break;
default:
break;
}
sc->sc_calibrating = 1;
RSU_UNLOCK(sc);
IEEE80211_LOCK(ic);
/* Start periodic calibration. */
taskqueue_enqueue_timeout(taskqueue_thread, &sc->calib_task, hz * 2);
return (uvp->newstate(vap, nstate, arg));
}
#ifdef notyet
static void
rsu_set_key(struct rsu_softc *sc, const struct ieee80211_key *k)
{
struct r92s_fw_cmd_set_key key;
memset(&key, 0, sizeof(key));
/* Map net80211 cipher to HW crypto algorithm. */
switch (k->wk_cipher->ic_cipher) {
case IEEE80211_CIPHER_WEP:
if (k->wk_keylen < 8)
key.algo = R92S_KEY_ALGO_WEP40;
else
key.algo = R92S_KEY_ALGO_WEP104;
break;
case IEEE80211_CIPHER_TKIP:
key.algo = R92S_KEY_ALGO_TKIP;
break;
case IEEE80211_CIPHER_AES_CCM:
key.algo = R92S_KEY_ALGO_AES;
break;
default:
return;
}
key.id = k->wk_keyix;
key.grpkey = (k->wk_flags & IEEE80211_KEY_GROUP) != 0;
memcpy(key.key, k->wk_key, MIN(k->wk_keylen, sizeof(key.key)));
(void)rsu_fw_cmd(sc, R92S_CMD_SET_KEY, &key, sizeof(key));
}
static void
rsu_delete_key(struct rsu_softc *sc, const struct ieee80211_key *k)
{
struct r92s_fw_cmd_set_key key;
memset(&key, 0, sizeof(key));
key.id = k->wk_keyix;
(void)rsu_fw_cmd(sc, R92S_CMD_SET_KEY, &key, sizeof(key));
}
#endif
static int
rsu_site_survey(struct rsu_softc *sc, struct ieee80211vap *vap)
{
struct r92s_fw_cmd_sitesurvey cmd;
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
memset(&cmd, 0, sizeof(cmd));
if ((ic->ic_flags & IEEE80211_F_ASCAN) || sc->scan_pass == 1)
cmd.active = htole32(1);
cmd.limit = htole32(48);
if (sc->scan_pass == 1 && vap->iv_des_nssid > 0) {
/* Do a directed scan for second pass. */
cmd.ssidlen = htole32(vap->iv_des_ssid[0].len);
memcpy(cmd.ssid, vap->iv_des_ssid[0].ssid,
vap->iv_des_ssid[0].len);
}
DPRINTF("sending site survey command, pass=%d\n", sc->scan_pass);
return (rsu_fw_cmd(sc, R92S_CMD_SITE_SURVEY, &cmd, sizeof(cmd)));
}
static int
rsu_join_bss(struct rsu_softc *sc, struct ieee80211_node *ni)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = ni->ni_vap;
struct ndis_wlan_bssid_ex *bss;
struct ndis_802_11_fixed_ies *fixed;
struct r92s_fw_cmd_auth auth;
uint8_t buf[sizeof(*bss) + 128], *frm;
uint8_t opmode;
int error;
/* Let the FW decide the opmode based on the capinfo field. */
opmode = NDIS802_11AUTOUNKNOWN;
DPRINTF("setting operating mode to %d\n", opmode);
error = rsu_fw_cmd(sc, R92S_CMD_SET_OPMODE, &opmode, sizeof(opmode));
if (error != 0)
return (error);
memset(&auth, 0, sizeof(auth));
if (vap->iv_flags & IEEE80211_F_WPA) {
auth.mode = R92S_AUTHMODE_WPA;
auth.dot1x = ni->ni_authmode == IEEE80211_AUTH_8021X;
} else
auth.mode = R92S_AUTHMODE_OPEN;
DPRINTF("setting auth mode to %d\n", auth.mode);
error = rsu_fw_cmd(sc, R92S_CMD_SET_AUTH, &auth, sizeof(auth));
if (error != 0)
return (error);
memset(buf, 0, sizeof(buf));
bss = (struct ndis_wlan_bssid_ex *)buf;
IEEE80211_ADDR_COPY(bss->macaddr, ni->ni_bssid);
bss->ssid.ssidlen = htole32(ni->ni_esslen);
memcpy(bss->ssid.ssid, ni->ni_essid, ni->ni_esslen);
if (vap->iv_flags & (IEEE80211_F_PRIVACY | IEEE80211_F_WPA))
bss->privacy = htole32(1);
bss->rssi = htole32(ni->ni_avgrssi);
if (ic->ic_curmode == IEEE80211_MODE_11B)
bss->networktype = htole32(NDIS802_11DS);
else
bss->networktype = htole32(NDIS802_11OFDM24);
bss->config.len = htole32(sizeof(bss->config));
bss->config.bintval = htole32(ni->ni_intval);
bss->config.dsconfig = htole32(ieee80211_chan2ieee(ic, ni->ni_chan));
bss->inframode = htole32(NDIS802_11INFRASTRUCTURE);
memcpy(bss->supprates, ni->ni_rates.rs_rates,
ni->ni_rates.rs_nrates);
/* Write the fixed fields of the beacon frame. */
fixed = (struct ndis_802_11_fixed_ies *)&bss[1];
memcpy(&fixed->tstamp, ni->ni_tstamp.data, 8);
fixed->bintval = htole16(ni->ni_intval);
fixed->capabilities = htole16(ni->ni_capinfo);
/* Write IEs to be included in the association request. */
frm = (uint8_t *)&fixed[1];
frm = ieee80211_add_rsn(frm, vap);
frm = ieee80211_add_wpa(frm, vap);
frm = ieee80211_add_qos(frm, ni);
if (ni->ni_flags & IEEE80211_NODE_HT)
frm = ieee80211_add_htcap(frm, ni);
bss->ieslen = htole32(frm - (uint8_t *)fixed);
bss->len = htole32(((frm - buf) + 3) & ~3);
DPRINTF("sending join bss command to %s chan %d\n",
ether_sprintf(bss->macaddr), le32toh(bss->config.dsconfig));
return (rsu_fw_cmd(sc, R92S_CMD_JOIN_BSS, buf, sizeof(buf)));
}
static int
rsu_disconnect(struct rsu_softc *sc)
{
uint32_t zero = 0; /* :-) */
/* Disassociate from our current BSS. */
DPRINTF("sending disconnect command\n");
return (rsu_fw_cmd(sc, R92S_CMD_DISCONNECT, &zero, sizeof(zero)));
}
static void
rsu_event_survey(struct rsu_softc *sc, uint8_t *buf, int len)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211_frame *wh;
struct ieee80211_channel *c;
struct ndis_wlan_bssid_ex *bss;
struct mbuf *m;
int pktlen;
if (__predict_false(len < sizeof(*bss)))
return;
bss = (struct ndis_wlan_bssid_ex *)buf;
if (__predict_false(len < sizeof(*bss) + le32toh(bss->ieslen)))
return;
DPRINTFN(2, "found BSS %s: len=%d chan=%d inframode=%d "
"networktype=%d privacy=%d\n",
ether_sprintf(bss->macaddr), le32toh(bss->len),
le32toh(bss->config.dsconfig), le32toh(bss->inframode),
le32toh(bss->networktype), le32toh(bss->privacy));
/* Build a fake beacon frame to let net80211 do all the parsing. */
pktlen = sizeof(*wh) + le32toh(bss->ieslen);
if (__predict_false(pktlen > MCLBYTES))
return;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (__predict_false(m == NULL))
return;
if (pktlen > MHLEN) {
MCLGET(m, M_DONTWAIT);
if (!(m->m_flags & M_EXT)) {
m_free(m);
return;
}
}
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
IEEE80211_FC0_SUBTYPE_BEACON;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
USETW(wh->i_dur, 0);
IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
IEEE80211_ADDR_COPY(wh->i_addr2, bss->macaddr);
IEEE80211_ADDR_COPY(wh->i_addr3, bss->macaddr);
*(uint16_t *)wh->i_seq = 0;
memcpy(&wh[1], (uint8_t *)&bss[1], le32toh(bss->ieslen));
/* Finalize mbuf. */
m->m_pkthdr.len = m->m_len = pktlen;
m->m_pkthdr.rcvif = ifp;
/* Fix the channel. */
c = ieee80211_find_channel_byieee(ic,
le32toh(bss->config.dsconfig),
IEEE80211_CHAN_G);
if (c) {
ic->ic_curchan = c;
ieee80211_radiotap_chan_change(ic);
}
/* XXX avoid a LOR */
RSU_UNLOCK(sc);
ieee80211_input_all(ic, m, le32toh(bss->rssi), 0);
RSU_LOCK(sc);
}
static void
rsu_event_join_bss(struct rsu_softc *sc, uint8_t *buf, int len)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ieee80211_node *ni = vap->iv_bss;
struct r92s_event_join_bss *rsp;
int res;
if (__predict_false(len < sizeof(*rsp)))
return;
rsp = (struct r92s_event_join_bss *)buf;
res = (int)le32toh(rsp->join_res);
DPRINTF("Rx join BSS event len=%d res=%d\n", len, res);
if (res <= 0) {
RSU_UNLOCK(sc);
ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
RSU_LOCK(sc);
return;
}
DPRINTF("associated with %s associd=%d\n",
ether_sprintf(rsp->bss.macaddr), le32toh(rsp->associd));
ni->ni_associd = le32toh(rsp->associd) | 0xc000;
RSU_UNLOCK(sc);
ieee80211_new_state(vap, IEEE80211_S_RUN,
IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
RSU_LOCK(sc);
}
static void
rsu_rx_event(struct rsu_softc *sc, uint8_t code, uint8_t *buf, int len)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
DPRINTFN(4, "Rx event code=%d len=%d\n", code, len);
switch (code) {
case R92S_EVT_SURVEY:
if (vap->iv_state == IEEE80211_S_SCAN)
rsu_event_survey(sc, buf, len);
break;
case R92S_EVT_SURVEY_DONE:
DPRINTF("site survey pass %d done, found %d BSS\n",
sc->scan_pass, le32toh(*(uint32_t *)buf));
if (vap->iv_state != IEEE80211_S_SCAN)
break; /* Ignore if not scanning. */
if (sc->scan_pass == 0 && vap->iv_des_nssid != 0) {
/* Schedule a directed scan for hidden APs. */
sc->scan_pass = 1;
RSU_UNLOCK(sc);
ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
RSU_LOCK(sc);
break;
}
sc->scan_pass = 0;
break;
case R92S_EVT_JOIN_BSS:
if (vap->iv_state == IEEE80211_S_AUTH)
rsu_event_join_bss(sc, buf, len);
break;
case R92S_EVT_DEL_STA:
DPRINTF("disassociated from %s\n", ether_sprintf(buf));
if (vap->iv_state == IEEE80211_S_RUN &&
IEEE80211_ADDR_EQ(vap->iv_bss->ni_bssid, buf)) {
RSU_UNLOCK(sc);
ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
RSU_LOCK(sc);
}
break;
case R92S_EVT_WPS_PBC:
DPRINTF("WPS PBC pushed.\n");
break;
case R92S_EVT_FWDBG:
if (ifp->if_flags & IFF_DEBUG) {
buf[60] = '\0';
printf("FWDBG: %s\n", (char *)buf);
}
break;
}
}
static void
rsu_rx_multi_event(struct rsu_softc *sc, uint8_t *buf, int len)
{
struct r92s_fw_cmd_hdr *cmd;
int cmdsz;
DPRINTFN(6, "Rx events len=%d\n", len);
/* Skip Rx status. */
buf += sizeof(struct r92s_rx_stat);
len -= sizeof(struct r92s_rx_stat);
/* Process all events. */
for (;;) {
/* Check that command header fits. */
if (__predict_false(len < sizeof(*cmd)))
break;
cmd = (struct r92s_fw_cmd_hdr *)buf;
/* Check that command payload fits. */
cmdsz = le16toh(cmd->len);
if (__predict_false(len < sizeof(*cmd) + cmdsz))
break;
/* Process firmware event. */
rsu_rx_event(sc, cmd->code, (uint8_t *)&cmd[1], cmdsz);
if (!(cmd->seq & R92S_FW_CMD_MORE))
break;
buf += sizeof(*cmd) + cmdsz;
len -= sizeof(*cmd) + cmdsz;
}
}
static int8_t
rsu_get_rssi(struct rsu_softc *sc, int rate, void *physt)
{
static const int8_t cckoff[] = { 14, -2, -20, -40 };
struct r92s_rx_phystat *phy;
struct r92s_rx_cck *cck;
uint8_t rpt;
int8_t rssi;
if (rate <= 3) {
cck = (struct r92s_rx_cck *)physt;
rpt = (cck->agc_rpt >> 6) & 0x3;
rssi = cck->agc_rpt & 0x3e;
rssi = cckoff[rpt] - rssi;
} else { /* OFDM/HT. */
phy = (struct r92s_rx_phystat *)physt;
rssi = ((le32toh(phy->phydw1) >> 1) & 0x7f) - 106;
}
return (rssi);
}
static struct mbuf *
rsu_rx_frame(struct rsu_softc *sc, uint8_t *buf, int pktlen, int *rssi)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211_frame *wh;
struct r92s_rx_stat *stat;
uint32_t rxdw0, rxdw3;
struct mbuf *m;
uint8_t rate;
int infosz;
stat = (struct r92s_rx_stat *)buf;
rxdw0 = le32toh(stat->rxdw0);
rxdw3 = le32toh(stat->rxdw3);
if (__predict_false(rxdw0 & R92S_RXDW0_CRCERR)) {
ifp->if_ierrors++;
return NULL;
}
if (__predict_false(pktlen < sizeof(*wh) || pktlen > MCLBYTES)) {
ifp->if_ierrors++;
return NULL;
}
rate = MS(rxdw3, R92S_RXDW3_RATE);
infosz = MS(rxdw0, R92S_RXDW0_INFOSZ) * 8;
/* Get RSSI from PHY status descriptor if present. */
if (infosz != 0)
*rssi = rsu_get_rssi(sc, rate, &stat[1]);
else
*rssi = 0;
DPRINTFN(5, "Rx frame len=%d rate=%d infosz=%d rssi=%d\n",
pktlen, rate, infosz, *rssi);
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (__predict_false(m == NULL)) {
ifp->if_ierrors++;
return NULL;
}
if (pktlen > MHLEN) {
MCLGET(m, M_DONTWAIT);
if (__predict_false(!(m->m_flags & M_EXT))) {
ifp->if_ierrors++;
m_freem(m);
return NULL;
}
}
/* Finalize mbuf. */
m->m_pkthdr.rcvif = ifp;
/* Hardware does Rx TCP checksum offload. */
if (rxdw3 & R92S_RXDW3_TCPCHKVALID) {
if (__predict_true(rxdw3 & R92S_RXDW3_TCPCHKRPT))
m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
}
wh = (struct ieee80211_frame *)((uint8_t *)&stat[1] + infosz);
memcpy(mtod(m, uint8_t *), wh, pktlen);
m->m_pkthdr.len = m->m_len = pktlen;
if (ieee80211_radiotap_active(ic)) {
struct rsu_rx_radiotap_header *tap = &sc->sc_rxtap;
/* Map HW rate index to 802.11 rate. */
tap->wr_flags = 2;
if (!(rxdw3 & R92S_RXDW3_HTC)) {
switch (rate) {
/* CCK. */
case 0: tap->wr_rate = 2; break;
case 1: tap->wr_rate = 4; break;
case 2: tap->wr_rate = 11; break;
case 3: tap->wr_rate = 22; break;
/* OFDM. */
case 4: tap->wr_rate = 12; break;
case 5: tap->wr_rate = 18; break;
case 6: tap->wr_rate = 24; break;
case 7: tap->wr_rate = 36; break;
case 8: tap->wr_rate = 48; break;
case 9: tap->wr_rate = 72; break;
case 10: tap->wr_rate = 96; break;
case 11: tap->wr_rate = 108; break;
}
} else if (rate >= 12) { /* MCS0~15. */
/* Bit 7 set means HT MCS instead of rate. */
tap->wr_rate = 0x80 | (rate - 12);
}
tap->wr_dbm_antsignal = *rssi;
tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
}
return (m);
}
static struct mbuf *
rsu_rx_multi_frame(struct rsu_softc *sc, uint8_t *buf, int len, int *rssi)
{
struct r92s_rx_stat *stat;
uint32_t rxdw0;
int totlen, pktlen, infosz, npkts;
struct mbuf *m, *m0 = NULL, *prevm = NULL;
/* Get the number of encapsulated frames. */
stat = (struct r92s_rx_stat *)buf;
npkts = MS(le32toh(stat->rxdw2), R92S_RXDW2_PKTCNT);
DPRINTFN(6, "Rx %d frames in one chunk\n", npkts);
/* Process all of them. */
while (npkts-- > 0) {
if (__predict_false(len < sizeof(*stat)))
break;
stat = (struct r92s_rx_stat *)buf;
rxdw0 = le32toh(stat->rxdw0);
pktlen = MS(rxdw0, R92S_RXDW0_PKTLEN);
if (__predict_false(pktlen == 0))
break;
infosz = MS(rxdw0, R92S_RXDW0_INFOSZ) * 8;
/* Make sure everything fits in xfer. */
totlen = sizeof(*stat) + infosz + pktlen;
if (__predict_false(totlen > len))
break;
/* Process 802.11 frame. */
m = rsu_rx_frame(sc, buf, pktlen, rssi);
if (m0 == NULL)
m0 = m;
if (prevm == NULL)
prevm = m;
else {
prevm->m_next = m;
prevm = m;
}
/* Next chunk is 128-byte aligned. */
totlen = (totlen + 127) & ~127;
buf += totlen;
len -= totlen;
}
return (m0);
}
static struct mbuf *
rsu_rxeof(struct usb_xfer *xfer, struct rsu_data *data, int *rssi)
{
struct rsu_softc *sc = data->sc;
struct r92s_rx_stat *stat;
int len;
usbd_xfer_status(xfer, &len, NULL, NULL, NULL);
if (__predict_false(len < sizeof(*stat))) {
DPRINTF("xfer too short %d\n", len);
sc->sc_ifp->if_ierrors++;
return (NULL);
}
/* Determine if it is a firmware C2H event or an 802.11 frame. */
stat = (struct r92s_rx_stat *)data->buf;
if ((le32toh(stat->rxdw1) & 0x1ff) == 0x1ff) {
rsu_rx_multi_event(sc, data->buf, len);
/* No packets to process. */
return (NULL);
} else
return (rsu_rx_multi_frame(sc, data->buf, len, rssi));
}
static void
rsu_bulk_rx_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct rsu_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211_frame *wh;
struct ieee80211_node *ni;
struct mbuf *m = NULL, *next;
struct rsu_data *data;
int rssi = 1;
RSU_ASSERT_LOCKED(sc);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
data = STAILQ_FIRST(&sc->sc_rx_active);
if (data == NULL)
goto tr_setup;
STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
m = rsu_rxeof(xfer, data, &rssi);
STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
data = STAILQ_FIRST(&sc->sc_rx_inactive);
if (data == NULL) {
KASSERT(m == NULL, ("mbuf isn't NULL"));
return;
}
STAILQ_REMOVE_HEAD(&sc->sc_rx_inactive, next);
STAILQ_INSERT_TAIL(&sc->sc_rx_active, data, next);
usbd_xfer_set_frame_data(xfer, 0, data->buf,
usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
/*
* To avoid LOR we should unlock our private mutex here to call
* ieee80211_input() because here is at the end of a USB
* callback and safe to unlock.
*/
RSU_UNLOCK(sc);
while (m != NULL) {
next = m->m_next;
m->m_next = NULL;
wh = mtod(m, struct ieee80211_frame *);
ni = ieee80211_find_rxnode(ic,
(struct ieee80211_frame_min *)wh);
if (ni != NULL) {
(void)ieee80211_input(ni, m, rssi, 0);
ieee80211_free_node(ni);
} else
(void)ieee80211_input_all(ic, m, rssi, 0);
m = next;
}
RSU_LOCK(sc);
break;
default:
/* needs it to the inactive queue due to a error. */
data = STAILQ_FIRST(&sc->sc_rx_active);
if (data != NULL) {
STAILQ_REMOVE_HEAD(&sc->sc_rx_active, next);
STAILQ_INSERT_TAIL(&sc->sc_rx_inactive, data, next);
}
if (error != USB_ERR_CANCELLED) {
usbd_xfer_set_stall(xfer);
ifp->if_ierrors++;
goto tr_setup;
}
break;
}
}
static void
rsu_txeof(struct usb_xfer *xfer, struct rsu_data *data)
{
struct rsu_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
RSU_ASSERT_LOCKED(sc);
/*
* Do any tx complete callback. Note this must be done before releasing
* the node reference.
*/
if (data->m) {
m = data->m;
if (m->m_flags & M_TXCB) {
/* XXX status? */
ieee80211_process_callback(data->ni, m, 0);
}
m_freem(m);
data->m = NULL;
}
if (data->ni) {
ieee80211_free_node(data->ni);
data->ni = NULL;
}
sc->sc_tx_timer = 0;
ifp->if_opackets++;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
static void
rsu_bulk_tx_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct rsu_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = sc->sc_ifp;
struct rsu_data *data;
RSU_ASSERT_LOCKED(sc);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
data = STAILQ_FIRST(&sc->sc_tx_active);
if (data == NULL)
goto tr_setup;
DPRINTF("transfer done %p\n", data);
STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
rsu_txeof(xfer, data);
STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
data = STAILQ_FIRST(&sc->sc_tx_pending);
if (data == NULL) {
DPRINTF("empty pending queue sc %p\n", sc);
return;
}
STAILQ_REMOVE_HEAD(&sc->sc_tx_pending, next);
STAILQ_INSERT_TAIL(&sc->sc_tx_active, data, next);
usbd_xfer_set_frame_data(xfer, 0, data->buf, data->buflen);
DPRINTF("submitting transfer %p\n", data);
usbd_transfer_submit(xfer);
rsu_start_locked(ifp);
break;
default:
data = STAILQ_FIRST(&sc->sc_tx_active);
if (data == NULL)
goto tr_setup;
if (data->ni != NULL) {
ieee80211_free_node(data->ni);
data->ni = NULL;
ifp->if_oerrors++;
}
if (error != USB_ERR_CANCELLED) {
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
break;
}
}
static int
rsu_tx_start(struct rsu_softc *sc, struct ieee80211_node *ni,
struct mbuf *m0, struct rsu_data *data)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211_frame *wh;
struct ieee80211_key *k = NULL;
struct r92s_tx_desc *txd;
struct usb_xfer *xfer;
uint8_t type, tid = 0;
int hasqos, xferlen;
struct usb_xfer *rsu_pipes[4] = {
sc->sc_xfer[RSU_BULK_TX_BE],
sc->sc_xfer[RSU_BULK_TX_BK],
sc->sc_xfer[RSU_BULK_TX_VI],
sc->sc_xfer[RSU_BULK_TX_VO]
};
RSU_ASSERT_LOCKED(sc);
wh = mtod(m0, struct ieee80211_frame *);
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
k = ieee80211_crypto_encap(ni, m0);
if (k == NULL) {
device_printf(sc->sc_dev,
"ieee80211_crypto_encap returns NULL.\n");
/* XXX we don't expect the fragmented frames */
m_freem(m0);
return (ENOBUFS);
}
wh = mtod(m0, struct ieee80211_frame *);
}
switch (type) {
case IEEE80211_FC0_TYPE_CTL:
case IEEE80211_FC0_TYPE_MGT:
xfer = sc->sc_xfer[RSU_BULK_TX_VO];
break;
default:
KASSERT(M_WME_GETAC(m0) < 4,
("unsupported WME pipe %d", M_WME_GETAC(m0)));
xfer = rsu_pipes[M_WME_GETAC(m0)];
break;
}
hasqos = 0;
/* Fill Tx descriptor. */
txd = (struct r92s_tx_desc *)data->buf;
memset(txd, 0, sizeof(*txd));
txd->txdw0 |= htole32(
SM(R92S_TXDW0_PKTLEN, m0->m_pkthdr.len) |
SM(R92S_TXDW0_OFFSET, sizeof(*txd)) |
R92S_TXDW0_OWN | R92S_TXDW0_FSG | R92S_TXDW0_LSG);
txd->txdw1 |= htole32(
SM(R92S_TXDW1_MACID, R92S_MACID_BSS) |
SM(R92S_TXDW1_QSEL, R92S_TXDW1_QSEL_BE));
if (!hasqos)
txd->txdw1 |= htole32(R92S_TXDW1_NONQOS);
#ifdef notyet
if (k != NULL) {
switch (k->wk_cipher->ic_cipher) {
case IEEE80211_CIPHER_WEP:
cipher = R92S_TXDW1_CIPHER_WEP;
break;
case IEEE80211_CIPHER_TKIP:
cipher = R92S_TXDW1_CIPHER_TKIP;
break;
case IEEE80211_CIPHER_AES_CCM:
cipher = R92S_TXDW1_CIPHER_AES;
break;
default:
cipher = R92S_TXDW1_CIPHER_NONE;
}
txd->txdw1 |= htole32(
SM(R92S_TXDW1_CIPHER, cipher) |
SM(R92S_TXDW1_KEYIDX, k->k_id));
}
#endif
txd->txdw2 |= htole32(R92S_TXDW2_BK);
if (IEEE80211_IS_MULTICAST(wh->i_addr1))
txd->txdw2 |= htole32(R92S_TXDW2_BMCAST);
/*
* Firmware will use and increment the sequence number for the
* specified TID.
*/
txd->txdw3 |= htole32(SM(R92S_TXDW3_SEQ, tid));
if (ieee80211_radiotap_active_vap(vap)) {
struct rsu_tx_radiotap_header *tap = &sc->sc_txtap;
tap->wt_flags = 0;
tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
ieee80211_radiotap_tx(vap, m0);
}
xferlen = sizeof(*txd) + m0->m_pkthdr.len;
m_copydata(m0, 0, m0->m_pkthdr.len, (caddr_t)&txd[1]);
data->buflen = xferlen;
data->ni = ni;
data->m = m0;
STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
usbd_transfer_start(xfer);
return (0);
}
static void
rsu_start(struct ifnet *ifp)
{
struct rsu_softc *sc = ifp->if_softc;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
return;
RSU_LOCK(sc);
rsu_start_locked(ifp);
RSU_UNLOCK(sc);
}
static void
rsu_start_locked(struct ifnet *ifp)
{
struct rsu_softc *sc = ifp->if_softc;
struct ieee80211_node *ni;
struct mbuf *m;
struct rsu_data *bf;
RSU_ASSERT_LOCKED(sc);
for (;;) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
break;
bf = rsu_getbuf(sc);
if (bf == NULL) {
IFQ_DRV_PREPEND(&ifp->if_snd, m);
break;
}
ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
m->m_pkthdr.rcvif = NULL;
if (rsu_tx_start(sc, ni, m, bf) != 0) {
ifp->if_oerrors++;
STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
ieee80211_free_node(ni);
break;
}
sc->sc_tx_timer = 5;
callout_reset(&sc->sc_watchdog_ch, hz, rsu_watchdog, sc);
}
}
static void
rsu_watchdog(void *arg)
{
struct rsu_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
if (sc->sc_tx_timer > 0) {
if (--sc->sc_tx_timer == 0) {
device_printf(sc->sc_dev, "device timeout\n");
/* rsu_init(ifp); XXX needs a process context! */
ifp->if_oerrors++;
return;
}
callout_reset(&sc->sc_watchdog_ch, hz, rsu_watchdog, sc);
}
}
static int
rsu_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct ieee80211com *ic = ifp->if_l2com;
struct ifreq *ifr = (struct ifreq *) data;
int error = 0, startall = 0;
switch (cmd) {
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
rsu_init(ifp->if_softc);
startall = 1;
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
rsu_stop(ifp, 1);
}
if (startall)
ieee80211_start_all(ic);
break;
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
break;
case SIOCGIFADDR:
error = ether_ioctl(ifp, cmd, data);
break;
default:
error = EINVAL;
break;
}
return (error);
}
/*
* Power on sequence for A-cut adapters.
*/
static void
rsu_power_on_acut(struct rsu_softc *sc)
{
uint32_t reg;
rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x53);
rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x57);
/* Enable AFE macro block's bandgap and Mbias. */
rsu_write_1(sc, R92S_AFE_MISC,
rsu_read_1(sc, R92S_AFE_MISC) |
R92S_AFE_MISC_BGEN | R92S_AFE_MISC_MBEN);
/* Enable LDOA15 block. */
rsu_write_1(sc, R92S_LDOA15_CTRL,
rsu_read_1(sc, R92S_LDOA15_CTRL) | R92S_LDA15_EN);
rsu_write_1(sc, R92S_SPS1_CTRL,
rsu_read_1(sc, R92S_SPS1_CTRL) | R92S_SPS1_LDEN);
usb_pause_mtx(&sc->sc_mtx, 2 * hz);
/* Enable switch regulator block. */
rsu_write_1(sc, R92S_SPS1_CTRL,
rsu_read_1(sc, R92S_SPS1_CTRL) | R92S_SPS1_SWEN);
rsu_write_4(sc, R92S_SPS1_CTRL, 0x00a7b267);
rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) | 0x08);
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x20);
rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) & ~0x90);
/* Enable AFE clock. */
rsu_write_1(sc, R92S_AFE_XTAL_CTRL + 1,
rsu_read_1(sc, R92S_AFE_XTAL_CTRL + 1) & ~0x04);
/* Enable AFE PLL macro block. */
rsu_write_1(sc, R92S_AFE_PLL_CTRL,
rsu_read_1(sc, R92S_AFE_PLL_CTRL) | 0x11);
/* Attach AFE PLL to MACTOP/BB. */
rsu_write_1(sc, R92S_SYS_ISO_CTRL,
rsu_read_1(sc, R92S_SYS_ISO_CTRL) & ~0x11);
/* Switch to 40MHz clock instead of 80MHz. */
rsu_write_2(sc, R92S_SYS_CLKR,
rsu_read_2(sc, R92S_SYS_CLKR) & ~R92S_SYS_CLKSEL);
/* Enable MAC clock. */
rsu_write_2(sc, R92S_SYS_CLKR,
rsu_read_2(sc, R92S_SYS_CLKR) |
R92S_MAC_CLK_EN | R92S_SYS_CLK_EN);
rsu_write_1(sc, R92S_PMC_FSM, 0x02);
/* Enable digital core and IOREG R/W. */
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x08);
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x80);
/* Switch the control path to firmware. */
reg = rsu_read_2(sc, R92S_SYS_CLKR);
reg = (reg & ~R92S_SWHW_SEL) | R92S_FWHW_SEL;
rsu_write_2(sc, R92S_SYS_CLKR, reg);
rsu_write_2(sc, R92S_CR, 0x37fc);
/* Fix USB RX FIFO issue. */
rsu_write_1(sc, 0xfe5c,
rsu_read_1(sc, 0xfe5c) | 0x80);
rsu_write_1(sc, 0x00ab,
rsu_read_1(sc, 0x00ab) | 0xc0);
rsu_write_1(sc, R92S_SYS_CLKR,
rsu_read_1(sc, R92S_SYS_CLKR) & ~R92S_SYS_CPU_CLKSEL);
}
/*
* Power on sequence for B-cut and C-cut adapters.
*/
static void
rsu_power_on_bcut(struct rsu_softc *sc)
{
uint32_t reg;
int ntries;
/* Prevent eFuse leakage. */
rsu_write_1(sc, 0x37, 0xb0);
usb_pause_mtx(&sc->sc_mtx, 10);
rsu_write_1(sc, 0x37, 0x30);
/* Switch the control path to hardware. */
reg = rsu_read_2(sc, R92S_SYS_CLKR);
if (reg & R92S_FWHW_SEL) {
rsu_write_2(sc, R92S_SYS_CLKR,
reg & ~(R92S_SWHW_SEL | R92S_FWHW_SEL));
}
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) & ~0x8c);
DELAY(1000);
rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x53);
rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x57);
reg = rsu_read_1(sc, R92S_AFE_MISC);
rsu_write_1(sc, R92S_AFE_MISC, reg | R92S_AFE_MISC_BGEN);
rsu_write_1(sc, R92S_AFE_MISC, reg | R92S_AFE_MISC_BGEN |
R92S_AFE_MISC_MBEN | R92S_AFE_MISC_I32_EN);
/* Enable PLL. */
rsu_write_1(sc, R92S_LDOA15_CTRL,
rsu_read_1(sc, R92S_LDOA15_CTRL) | R92S_LDA15_EN);
rsu_write_1(sc, R92S_LDOV12D_CTRL,
rsu_read_1(sc, R92S_LDOV12D_CTRL) | R92S_LDV12_EN);
rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) | 0x08);
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x20);
/* Support 64KB IMEM. */
rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1,
rsu_read_1(sc, R92S_SYS_ISO_CTRL + 1) & ~0x97);
/* Enable AFE clock. */
rsu_write_1(sc, R92S_AFE_XTAL_CTRL + 1,
rsu_read_1(sc, R92S_AFE_XTAL_CTRL + 1) & ~0x04);
/* Enable AFE PLL macro block. */
reg = rsu_read_1(sc, R92S_AFE_PLL_CTRL);
rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x11);
DELAY(500);
rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x51);
DELAY(500);
rsu_write_1(sc, R92S_AFE_PLL_CTRL, reg | 0x11);
DELAY(500);
/* Attach AFE PLL to MACTOP/BB. */
rsu_write_1(sc, R92S_SYS_ISO_CTRL,
rsu_read_1(sc, R92S_SYS_ISO_CTRL) & ~0x11);
/* Switch to 40MHz clock. */
rsu_write_1(sc, R92S_SYS_CLKR, 0x00);
/* Disable CPU clock and 80MHz SSC. */
rsu_write_1(sc, R92S_SYS_CLKR,
rsu_read_1(sc, R92S_SYS_CLKR) | 0xa0);
/* Enable MAC clock. */
rsu_write_2(sc, R92S_SYS_CLKR,
rsu_read_2(sc, R92S_SYS_CLKR) |
R92S_MAC_CLK_EN | R92S_SYS_CLK_EN);
rsu_write_1(sc, R92S_PMC_FSM, 0x02);
/* Enable digital core and IOREG R/W. */
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x08);
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1,
rsu_read_1(sc, R92S_SYS_FUNC_EN + 1) | 0x80);
/* Switch the control path to firmware. */
reg = rsu_read_2(sc, R92S_SYS_CLKR);
reg = (reg & ~R92S_SWHW_SEL) | R92S_FWHW_SEL;
rsu_write_2(sc, R92S_SYS_CLKR, reg);
rsu_write_2(sc, R92S_CR, 0x37fc);
/* Fix USB RX FIFO issue. */
rsu_write_1(sc, 0xfe5c,
rsu_read_1(sc, 0xfe5c) | 0x80);
rsu_write_1(sc, R92S_SYS_CLKR,
rsu_read_1(sc, R92S_SYS_CLKR) & ~R92S_SYS_CPU_CLKSEL);
rsu_write_1(sc, 0xfe1c, 0x80);
/* Make sure TxDMA is ready to download firmware. */
for (ntries = 0; ntries < 20; ntries++) {
reg = rsu_read_1(sc, R92S_TCR);
if ((reg & (R92S_TCR_IMEM_CHK_RPT | R92S_TCR_EMEM_CHK_RPT)) ==
(R92S_TCR_IMEM_CHK_RPT | R92S_TCR_EMEM_CHK_RPT))
break;
DELAY(5);
}
if (ntries == 20) {
DPRINTF("TxDMA is not ready\n");
/* Reset TxDMA. */
reg = rsu_read_1(sc, R92S_CR);
rsu_write_1(sc, R92S_CR, reg & ~R92S_CR_TXDMA_EN);
DELAY(2);
rsu_write_1(sc, R92S_CR, reg | R92S_CR_TXDMA_EN);
}
}
static void
rsu_power_off(struct rsu_softc *sc)
{
/* Turn RF off. */
rsu_write_1(sc, R92S_RF_CTRL, 0x00);
usb_pause_mtx(&sc->sc_mtx, 5);
/* Turn MAC off. */
/* Switch control path. */
rsu_write_1(sc, R92S_SYS_CLKR + 1, 0x38);
/* Reset MACTOP. */
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1, 0x70);
rsu_write_1(sc, R92S_PMC_FSM, 0x06);
rsu_write_1(sc, R92S_SYS_ISO_CTRL + 0, 0xf9);
rsu_write_1(sc, R92S_SYS_ISO_CTRL + 1, 0xe8);
/* Disable AFE PLL. */
rsu_write_1(sc, R92S_AFE_PLL_CTRL, 0x00);
/* Disable A15V. */
rsu_write_1(sc, R92S_LDOA15_CTRL, 0x54);
/* Disable eFuse 1.2V. */
rsu_write_1(sc, R92S_SYS_FUNC_EN + 1, 0x50);
rsu_write_1(sc, R92S_LDOV12D_CTRL, 0x24);
/* Enable AFE macro block's bandgap and Mbias. */
rsu_write_1(sc, R92S_AFE_MISC, 0x30);
/* Disable 1.6V LDO. */
rsu_write_1(sc, R92S_SPS0_CTRL + 0, 0x56);
rsu_write_1(sc, R92S_SPS0_CTRL + 1, 0x43);
}
static int
rsu_fw_loadsection(struct rsu_softc *sc, const uint8_t *buf, int len)
{
struct rsu_data *data;
struct r92s_tx_desc *txd;
int mlen;
while (len > 0) {
data = rsu_getbuf(sc);
if (data == NULL)
return (ENOMEM);
txd = (struct r92s_tx_desc *)data->buf;
memset(txd, 0, sizeof(*txd));
if (len <= RSU_TXBUFSZ - sizeof(*txd)) {
/* Last chunk. */
txd->txdw0 |= htole32(R92S_TXDW0_LINIP);
mlen = len;
} else
mlen = RSU_TXBUFSZ - sizeof(*txd);
txd->txdw0 |= htole32(SM(R92S_TXDW0_PKTLEN, mlen));
memcpy(&txd[1], buf, mlen);
data->buflen = sizeof(*txd) + mlen;
DPRINTF("starting transfer %p\n", data);
STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
buf += mlen;
len -= mlen;
}
usbd_transfer_start(sc->sc_xfer[RSU_BULK_TX_VO]);
return (0);
}
static int
rsu_load_firmware(struct rsu_softc *sc)
{
const struct r92s_fw_hdr *hdr;
struct r92s_fw_priv *dmem;
const uint8_t *imem, *emem;
int imemsz, ememsz;
const struct firmware *fw;
size_t size;
uint32_t reg;
int ntries, error;
RSU_UNLOCK(sc);
/* Read firmware image from the filesystem. */
if ((fw = firmware_get("rsu-rtl8712fw")) == NULL) {
device_printf(sc->sc_dev,
"%s: failed load firmware of file rsu-rtl8712fw\n",
__func__);
RSU_LOCK(sc);
return (ENXIO);
}
RSU_LOCK(sc);
size = fw->datasize;
if (size < sizeof(*hdr)) {
device_printf(sc->sc_dev, "firmware too short\n");
error = EINVAL;
goto fail;
}
hdr = (const struct r92s_fw_hdr *)fw->data;
if (hdr->signature != htole16(0x8712) &&
hdr->signature != htole16(0x8192)) {
device_printf(sc->sc_dev,
"invalid firmware signature 0x%x\n",
le16toh(hdr->signature));
error = EINVAL;
goto fail;
}
DPRINTF("FW V%d %02x-%02x %02x:%02x\n", le16toh(hdr->version),
hdr->month, hdr->day, hdr->hour, hdr->minute);
/* Make sure that driver and firmware are in sync. */
if (hdr->privsz != htole32(sizeof(*dmem))) {
device_printf(sc->sc_dev, "unsupported firmware image\n");
error = EINVAL;
goto fail;
}
/* Get FW sections sizes. */
imemsz = le32toh(hdr->imemsz);
ememsz = le32toh(hdr->sramsz);
/* Check that all FW sections fit in image. */
if (size < sizeof(*hdr) + imemsz + ememsz) {
device_printf(sc->sc_dev, "firmware too short\n");
error = EINVAL;
goto fail;
}
imem = (const uint8_t *)&hdr[1];
emem = imem + imemsz;
/* Load IMEM section. */
error = rsu_fw_loadsection(sc, imem, imemsz);
if (error != 0) {
device_printf(sc->sc_dev,
"could not load firmware section %s\n", "IMEM");
goto fail;
}
/* Wait for load to complete. */
for (ntries = 0; ntries < 10; ntries++) {
usb_pause_mtx(&sc->sc_mtx, 10);
reg = rsu_read_2(sc, R92S_TCR);
if (reg & R92S_TCR_IMEM_CODE_DONE)
break;
}
if (ntries == 10 || !(reg & R92S_TCR_IMEM_CHK_RPT)) {
device_printf(sc->sc_dev, "timeout waiting for %s transfer\n",
"IMEM");
error = ETIMEDOUT;
goto fail;
}
/* Load EMEM section. */
error = rsu_fw_loadsection(sc, emem, ememsz);
if (error != 0) {
device_printf(sc->sc_dev,
"could not load firmware section %s\n", "EMEM");
goto fail;
}
/* Wait for load to complete. */
for (ntries = 0; ntries < 10; ntries++) {
usb_pause_mtx(&sc->sc_mtx, 10);
reg = rsu_read_2(sc, R92S_TCR);
if (reg & R92S_TCR_EMEM_CODE_DONE)
break;
}
if (ntries == 10 || !(reg & R92S_TCR_EMEM_CHK_RPT)) {
device_printf(sc->sc_dev, "timeout waiting for %s transfer\n",
"EMEM");
error = ETIMEDOUT;
goto fail;
}
/* Enable CPU. */
rsu_write_1(sc, R92S_SYS_CLKR,
rsu_read_1(sc, R92S_SYS_CLKR) | R92S_SYS_CPU_CLKSEL);
if (!(rsu_read_1(sc, R92S_SYS_CLKR) & R92S_SYS_CPU_CLKSEL)) {
device_printf(sc->sc_dev, "could not enable system clock\n");
error = EIO;
goto fail;
}
rsu_write_2(sc, R92S_SYS_FUNC_EN,
rsu_read_2(sc, R92S_SYS_FUNC_EN) | R92S_FEN_CPUEN);
if (!(rsu_read_2(sc, R92S_SYS_FUNC_EN) & R92S_FEN_CPUEN)) {
device_printf(sc->sc_dev,
"could not enable microcontroller\n");
error = EIO;
goto fail;
}
/* Wait for CPU to initialize. */
for (ntries = 0; ntries < 100; ntries++) {
if (rsu_read_2(sc, R92S_TCR) & R92S_TCR_IMEM_RDY)
break;
DELAY(1000);
}
if (ntries == 100) {
device_printf(sc->sc_dev,
"timeout waiting for microcontroller\n");
error = ETIMEDOUT;
goto fail;
}
/* Update DMEM section before loading. */
dmem = __DECONST(struct r92s_fw_priv *, &hdr->priv);
memset(dmem, 0, sizeof(*dmem));
dmem->hci_sel = R92S_HCI_SEL_USB | R92S_HCI_SEL_8172;
dmem->nendpoints = sc->npipes;
dmem->rf_config = 0x12; /* 1T2R */
dmem->vcs_type = R92S_VCS_TYPE_AUTO;
dmem->vcs_mode = R92S_VCS_MODE_RTS_CTS;
#ifdef notyet
dmem->bw40_en = (ic->ic_htcaps & IEEE80211_HTCAP_CBW20_40) != 0;
#endif
dmem->turbo_mode = 1;
/* Load DMEM section. */
error = rsu_fw_loadsection(sc, (uint8_t *)dmem, sizeof(*dmem));
if (error != 0) {
device_printf(sc->sc_dev,
"could not load firmware section %s\n", "DMEM");
goto fail;
}
/* Wait for load to complete. */
for (ntries = 0; ntries < 100; ntries++) {
if (rsu_read_2(sc, R92S_TCR) & R92S_TCR_DMEM_CODE_DONE)
break;
DELAY(1000);
}
if (ntries == 100) {
device_printf(sc->sc_dev, "timeout waiting for %s transfer\n",
"DMEM");
error = ETIMEDOUT;
goto fail;
}
/* Wait for firmware readiness. */
for (ntries = 0; ntries < 60; ntries++) {
if (!(rsu_read_2(sc, R92S_TCR) & R92S_TCR_FWRDY))
break;
DELAY(1000);
}
if (ntries == 60) {
device_printf(sc->sc_dev,
"timeout waiting for firmware readiness\n");
error = ETIMEDOUT;
goto fail;
}
fail:
firmware_put(fw, FIRMWARE_UNLOAD);
return (error);
}
static int
rsu_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
const struct ieee80211_bpf_params *params)
{
struct ieee80211com *ic = ni->ni_ic;
struct ifnet *ifp = ic->ic_ifp;
struct rsu_softc *sc = ifp->if_softc;
struct rsu_data *bf;
/* prevent management frames from being sent if we're not ready */
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
m_freem(m);
ieee80211_free_node(ni);
return (ENETDOWN);
}
RSU_LOCK(sc);
bf = rsu_getbuf(sc);
if (bf == NULL) {
ieee80211_free_node(ni);
m_freem(m);
RSU_UNLOCK(sc);
return (ENOBUFS);
}
ifp->if_opackets++;
if (rsu_tx_start(sc, ni, m, bf) != 0) {
ieee80211_free_node(ni);
ifp->if_oerrors++;
STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, bf, next);
RSU_UNLOCK(sc);
return (EIO);
}
RSU_UNLOCK(sc);
sc->sc_tx_timer = 5;
return (0);
}
static void
rsu_init(void *arg)
{
struct rsu_softc *sc = arg;
RSU_LOCK(sc);
rsu_init_locked(arg);
RSU_UNLOCK(sc);
}
static void
rsu_init_locked(struct rsu_softc *sc)
{
struct ifnet *ifp = sc->sc_ifp;
struct r92s_set_pwr_mode cmd;
int error;
/* Init host async commands ring. */
sc->cmdq.cur = sc->cmdq.next = sc->cmdq.queued = 0;
/* Allocate Tx/Rx buffers. */
error = rsu_alloc_rx_list(sc);
if (error != 0) {
device_printf(sc->sc_dev, "could not allocate Rx buffers\n");
return;
}
error = rsu_alloc_tx_list(sc);
if (error != 0) {
device_printf(sc->sc_dev, "could not allocate Tx buffers\n");
rsu_free_rx_list(sc);
return;
}
/* Power on adapter. */
if (sc->cut == 1)
rsu_power_on_acut(sc);
else
rsu_power_on_bcut(sc);
/* Load firmware. */
error = rsu_load_firmware(sc);
if (error != 0)
goto fail;
/* Enable Rx TCP checksum offload. */
rsu_write_4(sc, R92S_RCR,
rsu_read_4(sc, R92S_RCR) | 0x04000000);
/* Append PHY status. */
rsu_write_4(sc, R92S_RCR,
rsu_read_4(sc, R92S_RCR) | 0x02000000);
rsu_write_4(sc, R92S_CR,
rsu_read_4(sc, R92S_CR) & ~0xff000000);
/* Use 128 bytes pages. */
rsu_write_1(sc, 0x00b5,
rsu_read_1(sc, 0x00b5) | 0x01);
/* Enable USB Rx aggregation. */
rsu_write_1(sc, 0x00bd,
rsu_read_1(sc, 0x00bd) | 0x80);
/* Set USB Rx aggregation threshold. */
rsu_write_1(sc, 0x00d9, 0x01);
/* Set USB Rx aggregation timeout (1.7ms/4). */
rsu_write_1(sc, 0xfe5b, 0x04);
/* Fix USB Rx FIFO issue. */
rsu_write_1(sc, 0xfe5c,
rsu_read_1(sc, 0xfe5c) | 0x80);
/* Set MAC address. */
rsu_write_region_1(sc, R92S_MACID, IF_LLADDR(ifp),
IEEE80211_ADDR_LEN);
/* NB: it really takes that long for firmware to boot. */
usb_pause_mtx(&sc->sc_mtx, 1500);
DPRINTF("setting MAC address to %s\n", ether_sprintf(IF_LLADDR(ifp)));
error = rsu_fw_cmd(sc, R92S_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp),
IEEE80211_ADDR_LEN);
if (error != 0) {
device_printf(sc->sc_dev, "could not set MAC address\n");
goto fail;
}
rsu_write_1(sc, R92S_USB_HRPWM,
R92S_USB_HRPWM_PS_ST_ACTIVE | R92S_USB_HRPWM_PS_ALL_ON);
memset(&cmd, 0, sizeof(cmd));
cmd.mode = R92S_PS_MODE_ACTIVE;
DPRINTF("setting ps mode to %d\n", cmd.mode);
error = rsu_fw_cmd(sc, R92S_CMD_SET_PWR_MODE, &cmd, sizeof(cmd));
if (error != 0) {
device_printf(sc->sc_dev, "could not set PS mode\n");
goto fail;
}
#if 0
if (ic->ic_htcaps & IEEE80211_HTCAP_CBW20_40) {
/* Enable 40MHz mode. */
error = rsu_fw_iocmd(sc,
SM(R92S_IOCMD_CLASS, 0xf4) |
SM(R92S_IOCMD_INDEX, 0x00) |
SM(R92S_IOCMD_VALUE, 0x0007));
if (error != 0) {
device_printf(sc->sc_dev,
"could not enable 40MHz mode\n");
goto fail;
}
}
/* Set default channel. */
ic->ic_bss->ni_chan = ic->ic_ibss_chan;
#endif
sc->scan_pass = 0;
usbd_transfer_start(sc->sc_xfer[RSU_BULK_RX]);
/* We're ready to go. */
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
callout_reset(&sc->sc_watchdog_ch, hz, rsu_watchdog, sc);
return;
fail:
rsu_free_rx_list(sc);
rsu_free_tx_list(sc);
return;
}
static void
rsu_stop(struct ifnet *ifp, int disable)
{
struct rsu_softc *sc = ifp->if_softc;
RSU_LOCK(sc);
rsu_stop_locked(ifp, disable);
RSU_UNLOCK(sc);
}
static void
rsu_stop_locked(struct ifnet *ifp, int disable __unused)
{
struct rsu_softc *sc = ifp->if_softc;
int i;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
callout_stop(&sc->sc_watchdog_ch);
sc->sc_calibrating = 0;
taskqueue_cancel_timeout(taskqueue_thread, &sc->calib_task, NULL);
/* Power off adapter. */
rsu_power_off(sc);
for (i = 0; i < RSU_N_TRANSFER; i++)
usbd_transfer_stop(sc->sc_xfer[i]);
}
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