svn commit: r266505 - head/sys/dev/usb/wlan
Hans Petter Selasky
hselasky at FreeBSD.org
Wed May 21 16:52:55 UTC 2014
Author: hselasky
Date: Wed May 21 16:52:55 2014
New Revision: 266505
URL: http://svnweb.freebsd.org/changeset/base/266505
Log:
- Split transmit queue into one for each type. Apparently there will
be a race when using a single active queue for all transmit types.
- Last argument of usb_pause_mtx() is ticks and not milliseconds.
- Remove unused watchdog.
- Remove some unused fields from the RSU softc structure.
- Workaround usbd_transfer_start() recursion from inside of completion
callback.
MFC after: 3 days
Modified:
head/sys/dev/usb/wlan/if_rsu.c
head/sys/dev/usb/wlan/if_rsureg.h
Modified: head/sys/dev/usb/wlan/if_rsu.c
==============================================================================
--- head/sys/dev/usb/wlan/if_rsu.c Wed May 21 16:50:22 2014 (r266504)
+++ head/sys/dev/usb/wlan/if_rsu.c Wed May 21 16:52:55 2014 (r266505)
@@ -128,7 +128,10 @@ static const STRUCT_USB_HOST_ID rsu_devs
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_tx_callback_0;
+static usb_callback_t rsu_bulk_tx_callback_1;
+static usb_callback_t rsu_bulk_tx_callback_2;
+static usb_callback_t rsu_bulk_tx_callback_3;
static usb_callback_t rsu_bulk_rx_callback;
static usb_error_t rsu_do_request(struct rsu_softc *,
struct usb_device_request *, void *);
@@ -187,11 +190,10 @@ static int rsu_raw_xmit(struct ieee80211
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 *, struct usb_xfer *);
+ struct mbuf *, struct rsu_data *);
static void rsu_start(struct ifnet *);
-static void rsu_start_locked(struct ifnet *, struct usb_xfer *);
+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);
@@ -241,7 +243,7 @@ static const struct usb_config rsu_confi
.pipe_bof = 1,
.force_short_xfer = 1
},
- .callback = rsu_bulk_tx_callback,
+ .callback = rsu_bulk_tx_callback_0,
.timeout = RSU_TX_TIMEOUT
},
[RSU_BULK_TX_BK] = {
@@ -254,7 +256,7 @@ static const struct usb_config rsu_confi
.pipe_bof = 1,
.force_short_xfer = 1
},
- .callback = rsu_bulk_tx_callback,
+ .callback = rsu_bulk_tx_callback_1,
.timeout = RSU_TX_TIMEOUT
},
[RSU_BULK_TX_VI] = {
@@ -267,7 +269,7 @@ static const struct usb_config rsu_confi
.pipe_bof = 1,
.force_short_xfer = 1
},
- .callback = rsu_bulk_tx_callback,
+ .callback = rsu_bulk_tx_callback_2,
.timeout = RSU_TX_TIMEOUT
},
[RSU_BULK_TX_VO] = {
@@ -280,7 +282,7 @@ static const struct usb_config rsu_confi
.pipe_bof = 1,
.force_short_xfer = 1
},
- .callback = rsu_bulk_tx_callback,
+ .callback = rsu_bulk_tx_callback_3,
.timeout = RSU_TX_TIMEOUT
},
};
@@ -316,7 +318,6 @@ rsu_attach(device_t self)
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,
@@ -428,7 +429,6 @@ rsu_detach(device_t self)
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. */
@@ -598,9 +598,12 @@ rsu_alloc_tx_list(struct rsu_softc *sc)
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_MAX_TX_EP; i++) {
+ STAILQ_INIT(&sc->sc_tx_active[i]);
+ STAILQ_INIT(&sc->sc_tx_pending[i]);
+ }
for (i = 0; i < RSU_TX_LIST_COUNT; i++) {
STAILQ_INSERT_HEAD(&sc->sc_tx_inactive, &sc->sc_tx[i], next);
@@ -843,10 +846,12 @@ rsu_read_rom(struct rsu_softc *sc)
static int
rsu_fw_cmd(struct rsu_softc *sc, uint8_t code, void *buf, int len)
{
+ const uint8_t which = RSU_BULK_TX_VO - RSU_BULK_TX_BE;
struct rsu_data *data;
struct r92s_tx_desc *txd;
struct r92s_fw_cmd_hdr *cmd;
- int cmdsz, xferlen;
+ int cmdsz;
+ int xferlen;
data = rsu_getbuf(sc);
if (data == NULL)
@@ -879,8 +884,8 @@ rsu_fw_cmd(struct rsu_softc *sc, uint8_t
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]);
+ STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
+ usbd_transfer_start(sc->sc_xfer[which + RSU_BULK_TX_BE]);
return (0);
}
@@ -1574,13 +1579,13 @@ rsu_txeof(struct usb_xfer *xfer, struct
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)
+rsu_bulk_tx_callback_sub(struct usb_xfer *xfer, usb_error_t error,
+ uint8_t which)
{
struct rsu_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = sc->sc_ifp;
@@ -1590,37 +1595,36 @@ rsu_bulk_tx_callback(struct usb_xfer *xf
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
- data = STAILQ_FIRST(&sc->sc_tx_active);
+ data = STAILQ_FIRST(&sc->sc_tx_active[which]);
if (data == NULL)
goto tr_setup;
DPRINTF("transfer done %p\n", data);
- STAILQ_REMOVE_HEAD(&sc->sc_tx_active, next);
+ STAILQ_REMOVE_HEAD(&sc->sc_tx_active[which], 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);
+ data = STAILQ_FIRST(&sc->sc_tx_pending[which]);
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);
+ STAILQ_REMOVE_HEAD(&sc->sc_tx_pending[which], next);
+ STAILQ_INSERT_TAIL(&sc->sc_tx_active[which], 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, xfer);
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++;
+ data = STAILQ_FIRST(&sc->sc_tx_active[which]);
+ if (data != NULL) {
+ STAILQ_REMOVE_HEAD(&sc->sc_tx_active[which], next);
+ rsu_txeof(xfer, data);
+ STAILQ_INSERT_TAIL(&sc->sc_tx_inactive, data, next);
}
+ ifp->if_oerrors++;
+
if (error != USB_ERR_CANCELLED) {
usbd_xfer_set_stall(xfer);
goto tr_setup;
@@ -1629,9 +1633,33 @@ tr_setup:
}
}
+static void
+rsu_bulk_tx_callback_0(struct usb_xfer *xfer, usb_error_t error)
+{
+ rsu_bulk_tx_callback_sub(xfer, error, 0);
+}
+
+static void
+rsu_bulk_tx_callback_1(struct usb_xfer *xfer, usb_error_t error)
+{
+ rsu_bulk_tx_callback_sub(xfer, error, 1);
+}
+
+static void
+rsu_bulk_tx_callback_2(struct usb_xfer *xfer, usb_error_t error)
+{
+ rsu_bulk_tx_callback_sub(xfer, error, 2);
+}
+
+static void
+rsu_bulk_tx_callback_3(struct usb_xfer *xfer, usb_error_t error)
+{
+ rsu_bulk_tx_callback_sub(xfer, error, 3);
+}
+
static int
rsu_tx_start(struct rsu_softc *sc, struct ieee80211_node *ni,
- struct mbuf *m0, struct rsu_data *data, struct usb_xfer *xfer_self)
+ struct mbuf *m0, struct rsu_data *data)
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211com *ic = ifp->if_l2com;
@@ -1639,15 +1667,11 @@ rsu_tx_start(struct rsu_softc *sc, struc
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]
- };
+ uint8_t type;
+ uint8_t tid = 0;
+ uint8_t which;
+ int hasqos;
+ int xferlen;
RSU_ASSERT_LOCKED(sc);
@@ -1668,12 +1692,12 @@ rsu_tx_start(struct rsu_softc *sc, struc
switch (type) {
case IEEE80211_FC0_TYPE_CTL:
case IEEE80211_FC0_TYPE_MGT:
- xfer = sc->sc_xfer[RSU_BULK_TX_VO];
+ which = RSU_BULK_TX_VO - RSU_BULK_TX_BE;
break;
default:
KASSERT(M_WME_GETAC(m0) < 4,
("unsupported WME pipe %d", M_WME_GETAC(m0)));
- xfer = rsu_pipes[M_WME_GETAC(m0)];
+ which = M_WME_GETAC(m0) + RSU_BULK_TX_BE;
break;
}
hasqos = 0;
@@ -1735,10 +1759,10 @@ rsu_tx_start(struct rsu_softc *sc, struc
data->buflen = xferlen;
data->ni = ni;
data->m = m0;
- STAILQ_INSERT_TAIL(&sc->sc_tx_pending, data, next);
+ STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
- if (xfer != xfer_self)
- usbd_transfer_start(xfer);
+ /* start transfer, if any */
+ usbd_transfer_start(sc->sc_xfer[which + RSU_BULK_TX_BE]);
return (0);
}
@@ -1751,17 +1775,17 @@ rsu_start(struct ifnet *ifp)
return;
RSU_LOCK(sc);
- rsu_start_locked(ifp, NULL);
+ rsu_start_locked(ifp);
RSU_UNLOCK(sc);
}
static void
-rsu_start_locked(struct ifnet *ifp, struct usb_xfer *xfer_self)
+rsu_start_locked(struct ifnet *ifp)
{
struct rsu_softc *sc = ifp->if_softc;
struct ieee80211_node *ni;
- struct mbuf *m;
struct rsu_data *bf;
+ struct mbuf *m;
RSU_ASSERT_LOCKED(sc);
@@ -1769,39 +1793,19 @@ rsu_start_locked(struct ifnet *ifp, stru
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, xfer_self) != 0) {
+ bf = rsu_getbuf(sc);
+ if (bf == NULL) {
+ ifp->if_iqdrops++;
+ m_freem(m);
+ ieee80211_free_node(ni);
+ } else 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);
}
}
@@ -1933,7 +1937,7 @@ rsu_power_on_bcut(struct rsu_softc *sc)
/* Prevent eFuse leakage. */
rsu_write_1(sc, 0x37, 0xb0);
- usb_pause_mtx(&sc->sc_mtx, 10);
+ usb_pause_mtx(&sc->sc_mtx, hz / 100);
rsu_write_1(sc, 0x37, 0x30);
/* Switch the control path to hardware. */
@@ -2045,7 +2049,7 @@ 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);
+ usb_pause_mtx(&sc->sc_mtx, hz / 200);
/* Turn MAC off. */
/* Switch control path. */
@@ -2073,6 +2077,7 @@ rsu_power_off(struct rsu_softc *sc)
static int
rsu_fw_loadsection(struct rsu_softc *sc, const uint8_t *buf, int len)
{
+ const uint8_t which = RSU_BULK_TX_VO - RSU_BULK_TX_BE;
struct rsu_data *data;
struct r92s_tx_desc *txd;
int mlen;
@@ -2093,12 +2098,11 @@ rsu_fw_loadsection(struct rsu_softc *sc,
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);
+ STAILQ_INSERT_TAIL(&sc->sc_tx_pending[which], data, next);
buf += mlen;
len -= mlen;
}
- usbd_transfer_start(sc->sc_xfer[RSU_BULK_TX_VO]);
-
+ usbd_transfer_start(sc->sc_xfer[RSU_BULK_TX_BE + which]);
return (0);
}
@@ -2169,7 +2173,7 @@ rsu_load_firmware(struct rsu_softc *sc)
}
/* Wait for load to complete. */
for (ntries = 0; ntries < 10; ntries++) {
- usb_pause_mtx(&sc->sc_mtx, 10);
+ usb_pause_mtx(&sc->sc_mtx, hz / 100);
reg = rsu_read_2(sc, R92S_TCR);
if (reg & R92S_TCR_IMEM_CODE_DONE)
break;
@@ -2190,7 +2194,7 @@ rsu_load_firmware(struct rsu_softc *sc)
}
/* Wait for load to complete. */
for (ntries = 0; ntries < 10; ntries++) {
- usb_pause_mtx(&sc->sc_mtx, 10);
+ usb_pause_mtx(&sc->sc_mtx, hz / 100);
reg = rsu_read_2(sc, R92S_TCR);
if (reg & R92S_TCR_EMEM_CODE_DONE)
break;
@@ -2235,7 +2239,7 @@ rsu_load_firmware(struct rsu_softc *sc)
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->nendpoints = 0;
dmem->rf_config = 0x12; /* 1T2R */
dmem->vcs_type = R92S_VCS_TYPE_AUTO;
dmem->vcs_mode = R92S_VCS_MODE_RTS_CTS;
@@ -2304,7 +2308,7 @@ rsu_raw_xmit(struct ieee80211_node *ni,
return (ENOBUFS);
}
ifp->if_opackets++;
- if (rsu_tx_start(sc, ni, m, bf, NULL) != 0) {
+ 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);
@@ -2312,7 +2316,6 @@ rsu_raw_xmit(struct ieee80211_node *ni,
return (EIO);
}
RSU_UNLOCK(sc);
- sc->sc_tx_timer = 5;
return (0);
}
@@ -2433,9 +2436,6 @@ rsu_init_locked(struct rsu_softc *sc)
/* 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);
@@ -2460,7 +2460,6 @@ rsu_stop_locked(struct ifnet *ifp, int d
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);
Modified: head/sys/dev/usb/wlan/if_rsureg.h
==============================================================================
--- head/sys/dev/usb/wlan/if_rsureg.h Wed May 21 16:50:22 2014 (r266504)
+++ head/sys/dev/usb/wlan/if_rsureg.h Wed May 21 16:52:55 2014 (r266505)
@@ -1,4 +1,3 @@
-
/*-
* Copyright (c) 2010 Damien Bergamini <damien.bergamini at free.fr>
*
@@ -18,9 +17,6 @@
* $FreeBSD$
*/
-/* Maximum number of pipes is 11. */
-#define R92S_MAX_EP 11
-
/* USB Requests. */
#define R92S_REQ_REGS 0x05
@@ -519,7 +515,7 @@ struct r92s_rx_stat {
uint32_t rxdw4;
uint32_t rxdw5;
-} __packed __attribute__((aligned(4)));
+} __packed __aligned(4);
/* Rx PHY descriptor. */
struct r92s_rx_phystat {
@@ -531,7 +527,7 @@ struct r92s_rx_phystat {
uint32_t phydw5;
uint32_t phydw6;
uint32_t phydw7;
-} __packed __attribute__((aligned(4)));
+} __packed __aligned(4);
/* Rx PHY CCK descriptor. */
struct r92s_rx_cck {
@@ -595,18 +591,14 @@ struct r92s_tx_desc {
uint16_t txbufsize;
uint16_t reserved1;
-} __packed __attribute__((aligned(4)));
+} __packed __aligned(4);
/*
* Driver definitions.
*/
#define RSU_RX_LIST_COUNT 1
-#ifdef __OpenBSD__
-#define RSU_TX_LIST_COUNT (8 + 1) /* NB: +1 for FW commands. */
-#else
#define RSU_TX_LIST_COUNT 32
-#endif
#define RSU_HOST_CMD_RING_COUNT 32
@@ -735,6 +727,8 @@ struct rsu_vap {
#define RSU_UNLOCK(sc) mtx_unlock(&(sc)->sc_mtx)
#define RSU_ASSERT_LOCKED(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED)
+#define RSU_MAX_TX_EP 4
+
struct rsu_softc {
struct ifnet *sc_ifp;
device_t sc_dev;
@@ -743,15 +737,11 @@ struct rsu_softc {
enum ieee80211_state, int);
struct usbd_interface *sc_iface;
struct timeout_task calib_task;
- struct callout sc_watchdog_ch;
- struct usbd_pipe *pipe[R92S_MAX_EP];
- int npipes;
const uint8_t *qid2idx;
struct mtx sc_mtx;
u_int cut;
int scan_pass;
- int sc_tx_timer;
struct rsu_host_cmd_ring cmdq;
struct rsu_data sc_rx[RSU_RX_LIST_COUNT];
struct rsu_data sc_tx[RSU_TX_LIST_COUNT];
@@ -764,9 +754,9 @@ struct rsu_softc {
STAILQ_HEAD(, rsu_data) sc_rx_active;
STAILQ_HEAD(, rsu_data) sc_rx_inactive;
- STAILQ_HEAD(, rsu_data) sc_tx_active;
+ STAILQ_HEAD(, rsu_data) sc_tx_active[RSU_MAX_TX_EP];
STAILQ_HEAD(, rsu_data) sc_tx_inactive;
- STAILQ_HEAD(, rsu_data) sc_tx_pending;
+ STAILQ_HEAD(, rsu_data) sc_tx_pending[RSU_MAX_TX_EP];
union {
struct rsu_rx_radiotap_header th;
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