Home | History | Annotate | Line # | Download | only in usb
usbnet.c revision 1.25.2.3 
      1  1.25.2.3  martin /*	$NetBSD: usbnet.c,v 1.25.2.3 2019/09/13 06:51:58 martin Exp $	*/
      2  1.25.2.2  martin 
      3  1.25.2.2  martin /*
      4  1.25.2.2  martin  * Copyright (c) 2019 Matthew R. Green
      5  1.25.2.2  martin  * All rights reserved.
      6  1.25.2.2  martin  *
      7  1.25.2.2  martin  * Redistribution and use in source and binary forms, with or without
      8  1.25.2.2  martin  * modification, are permitted provided that the following conditions
      9  1.25.2.2  martin  * are met:
     10  1.25.2.2  martin  * 1. Redistributions of source code must retain the above copyright
     11  1.25.2.2  martin  *    notice, this list of conditions and the following disclaimer.
     12  1.25.2.2  martin  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.25.2.2  martin  *    notice, this list of conditions and the following disclaimer in the
     14  1.25.2.2  martin  *    documentation and/or other materials provided with the distribution.
     15  1.25.2.2  martin  * 3. The name of the author may not be used to endorse or promote products
     16  1.25.2.2  martin  *    derived from this software without specific prior written permission.
     17  1.25.2.2  martin  *
     18  1.25.2.2  martin  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  1.25.2.2  martin  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  1.25.2.2  martin  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  1.25.2.2  martin  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  1.25.2.2  martin  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  1.25.2.2  martin  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  1.25.2.2  martin  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  1.25.2.2  martin  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  1.25.2.2  martin  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  1.25.2.2  martin  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  1.25.2.2  martin  * SUCH DAMAGE.
     29  1.25.2.2  martin  */
     30  1.25.2.2  martin 
     31  1.25.2.2  martin /*
     32  1.25.2.2  martin  * Common code shared between USB network drivers.
     33  1.25.2.2  martin  */
     34  1.25.2.2  martin 
     35  1.25.2.2  martin #include <sys/cdefs.h>
     36  1.25.2.3  martin __KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.25.2.3 2019/09/13 06:51:58 martin Exp $");
     37  1.25.2.2  martin 
     38  1.25.2.2  martin #include <sys/param.h>
     39  1.25.2.2  martin #include <sys/kernel.h>
     40  1.25.2.2  martin #include <sys/kmem.h>
     41  1.25.2.2  martin #include <sys/module.h>
     42  1.25.2.2  martin #include <sys/atomic.h>
     43  1.25.2.2  martin 
     44  1.25.2.2  martin #include <dev/usb/usbnet.h>
     45  1.25.2.2  martin #include <dev/usb/usbhist.h>
     46  1.25.2.2  martin 
     47  1.25.2.2  martin struct usbnet_cdata {
     48  1.25.2.2  martin 	struct usbnet_chain	*uncd_tx_chain;
     49  1.25.2.2  martin 	struct usbnet_chain	*uncd_rx_chain;
     50  1.25.2.2  martin 
     51  1.25.2.2  martin 	int			uncd_tx_prod;
     52  1.25.2.2  martin 	int			uncd_tx_cnt;
     53  1.25.2.2  martin };
     54  1.25.2.2  martin 
     55  1.25.2.2  martin struct usbnet_private {
     56  1.25.2.2  martin 	/*
     57  1.25.2.2  martin 	 * - unp_lock protects most of the structure, and the public one
     58  1.25.2.2  martin 	 * - unp_miilock must be held to access this device's MII bus
     59  1.25.2.2  martin 	 * - unp_rxlock protects the rx path and its data
     60  1.25.2.2  martin 	 * - unp_txlock protects the tx path and its data
     61  1.25.2.2  martin 	 * - unp_detachcv handles detach vs open references
     62  1.25.2.3  martin 	 *
     63  1.25.2.3  martin 	 * the lock ordering is:
     64  1.25.2.3  martin 	 *	ifnet lock -> unp_lock -> unp_rxlock -> unp_txlock
     65  1.25.2.3  martin 	 *      unp_lock -> unp_miilock
     66  1.25.2.3  martin 	 * and unp_lock may be dropped after taking unp_miilock.
     67  1.25.2.2  martin 	 */
     68  1.25.2.2  martin 	kmutex_t		unp_lock;
     69  1.25.2.2  martin 	kmutex_t		unp_miilock;
     70  1.25.2.2  martin 	kmutex_t		unp_rxlock;
     71  1.25.2.2  martin 	kmutex_t		unp_txlock;
     72  1.25.2.2  martin 	kcondvar_t		unp_detachcv;
     73  1.25.2.2  martin 
     74  1.25.2.2  martin 	struct usbnet_cdata	unp_cdata;
     75  1.25.2.2  martin 
     76  1.25.2.2  martin 	struct ethercom		unp_ec;
     77  1.25.2.2  martin 	struct mii_data		unp_mii;
     78  1.25.2.2  martin 	struct usb_task		unp_ticktask;
     79  1.25.2.2  martin 	struct callout		unp_stat_ch;
     80  1.25.2.2  martin 	struct usbd_pipe	*unp_ep[USBNET_ENDPT_MAX];
     81  1.25.2.2  martin 
     82  1.25.2.2  martin 	bool			unp_dying;
     83  1.25.2.2  martin 	bool			unp_stopping;
     84  1.25.2.2  martin 	bool			unp_attached;
     85  1.25.2.2  martin 	bool			unp_link;
     86  1.25.2.2  martin 
     87  1.25.2.2  martin 	int			unp_refcnt;
     88  1.25.2.2  martin 	int			unp_timer;
     89  1.25.2.2  martin 	int			unp_if_flags;
     90  1.25.2.2  martin 	unsigned		unp_number;
     91  1.25.2.2  martin 
     92  1.25.2.2  martin 	krndsource_t		unp_rndsrc;
     93  1.25.2.2  martin 
     94  1.25.2.2  martin 	struct timeval		unp_rx_notice;
     95  1.25.2.2  martin 	struct timeval		unp_tx_notice;
     96  1.25.2.2  martin 	struct timeval		unp_intr_notice;
     97  1.25.2.2  martin };
     98  1.25.2.2  martin 
     99  1.25.2.2  martin #define un_cdata(un)	(&(un)->un_pri->unp_cdata)
    100  1.25.2.2  martin 
    101  1.25.2.2  martin volatile unsigned usbnet_number;
    102  1.25.2.2  martin 
    103  1.25.2.2  martin static int usbnet_modcmd(modcmd_t, void *);
    104  1.25.2.2  martin 
    105  1.25.2.2  martin #ifdef USB_DEBUG
    106  1.25.2.2  martin #ifndef USBNET_DEBUG
    107  1.25.2.2  martin #define usbnetdebug 0
    108  1.25.2.2  martin #else
    109  1.25.2.3  martin static int usbnetdebug = 0;
    110  1.25.2.2  martin 
    111  1.25.2.2  martin SYSCTL_SETUP(sysctl_hw_usbnet_setup, "sysctl hw.usbnet setup")
    112  1.25.2.2  martin {
    113  1.25.2.2  martin 	int err;
    114  1.25.2.2  martin 	const struct sysctlnode *rnode;
    115  1.25.2.2  martin 	const struct sysctlnode *cnode;
    116  1.25.2.2  martin 
    117  1.25.2.2  martin 	err = sysctl_createv(clog, 0, NULL, &rnode,
    118  1.25.2.2  martin 	    CTLFLAG_PERMANENT, CTLTYPE_NODE, "usbnet",
    119  1.25.2.2  martin 	    SYSCTL_DESCR("usbnet global controls"),
    120  1.25.2.2  martin 	    NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL);
    121  1.25.2.2  martin 
    122  1.25.2.2  martin 	if (err)
    123  1.25.2.2  martin 		goto fail;
    124  1.25.2.2  martin 
    125  1.25.2.2  martin 	/* control debugging printfs */
    126  1.25.2.2  martin 	err = sysctl_createv(clog, 0, &rnode, &cnode,
    127  1.25.2.2  martin 	    CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT,
    128  1.25.2.2  martin 	    "debug", SYSCTL_DESCR("Enable debugging output"),
    129  1.25.2.2  martin 	    NULL, 0, &usbnetdebug, sizeof(usbnetdebug), CTL_CREATE, CTL_EOL);
    130  1.25.2.2  martin 	if (err)
    131  1.25.2.2  martin 		goto fail;
    132  1.25.2.2  martin 
    133  1.25.2.2  martin 	return;
    134  1.25.2.2  martin fail:
    135  1.25.2.2  martin 	aprint_error("%s: sysctl_createv failed (err = %d)\n", __func__, err);
    136  1.25.2.2  martin }
    137  1.25.2.2  martin 
    138  1.25.2.2  martin #endif /* USBNET_DEBUG */
    139  1.25.2.2  martin #endif /* USB_DEBUG */
    140  1.25.2.2  martin 
    141  1.25.2.2  martin #define DPRINTF(FMT,A,B,C,D)	USBHIST_LOGN(usbnetdebug,1,FMT,A,B,C,D)
    142  1.25.2.2  martin #define DPRINTFN(N,FMT,A,B,C,D)	USBHIST_LOGN(usbnetdebug,N,FMT,A,B,C,D)
    143  1.25.2.2  martin #define USBNETHIST_FUNC()	USBHIST_FUNC()
    144  1.25.2.2  martin #define USBNETHIST_CALLED(name)	USBHIST_CALLED(usbnetdebug)
    145  1.25.2.2  martin #define USBNETHIST_CALLARGS(FMT,A,B,C,D) \
    146  1.25.2.2  martin 				USBHIST_CALLARGS(usbnetdebug,FMT,A,B,C,D)
    147  1.25.2.2  martin #define USBNETHIST_CALLARGSN(N,FMT,A,B,C,D) \
    148  1.25.2.2  martin 				USBHIST_CALLARGSN(usbnetdebug,N,FMT,A,B,C,D)
    149  1.25.2.2  martin 
    150  1.25.2.2  martin /* Callback vectors. */
    151  1.25.2.2  martin 
    152  1.25.2.2  martin static void
    153  1.25.2.2  martin uno_stop(struct usbnet *un, struct ifnet *ifp, int disable)
    154  1.25.2.2  martin {
    155  1.25.2.2  martin 	if (un->un_ops->uno_stop)
    156  1.25.2.2  martin 		(*un->un_ops->uno_stop)(ifp, disable);
    157  1.25.2.2  martin }
    158  1.25.2.2  martin 
    159  1.25.2.2  martin static int
    160  1.25.2.2  martin uno_ioctl(struct usbnet *un, struct ifnet *ifp, u_long cmd, void *data)
    161  1.25.2.2  martin {
    162  1.25.2.2  martin 	if (un->un_ops->uno_ioctl)
    163  1.25.2.2  martin 		return (*un->un_ops->uno_ioctl)(ifp, cmd, data);
    164  1.25.2.2  martin 	return 0;
    165  1.25.2.2  martin }
    166  1.25.2.2  martin 
    167  1.25.2.2  martin static int
    168  1.25.2.2  martin uno_override_ioctl(struct usbnet *un, struct ifnet *ifp, u_long cmd, void *data)
    169  1.25.2.2  martin {
    170  1.25.2.2  martin 	return (*un->un_ops->uno_override_ioctl)(ifp, cmd, data);
    171  1.25.2.2  martin }
    172  1.25.2.2  martin 
    173  1.25.2.2  martin static int
    174  1.25.2.2  martin uno_init(struct usbnet *un, struct ifnet *ifp)
    175  1.25.2.2  martin {
    176  1.25.2.2  martin 	return (*un->un_ops->uno_init)(ifp);
    177  1.25.2.2  martin }
    178  1.25.2.2  martin 
    179  1.25.2.2  martin static int
    180  1.25.2.2  martin uno_read_reg(struct usbnet *un, int phy, int reg, uint16_t *val)
    181  1.25.2.2  martin {
    182  1.25.2.2  martin 	return (*un->un_ops->uno_read_reg)(un, phy, reg, val);
    183  1.25.2.2  martin }
    184  1.25.2.2  martin 
    185  1.25.2.2  martin static int
    186  1.25.2.2  martin uno_write_reg(struct usbnet *un, int phy, int reg, uint16_t val)
    187  1.25.2.2  martin {
    188  1.25.2.2  martin 	return (*un->un_ops->uno_write_reg)(un, phy, reg, val);
    189  1.25.2.2  martin }
    190  1.25.2.2  martin 
    191  1.25.2.2  martin static void
    192  1.25.2.2  martin uno_mii_statchg(struct usbnet *un, struct ifnet *ifp)
    193  1.25.2.2  martin {
    194  1.25.2.2  martin 	(*un->un_ops->uno_statchg)(ifp);
    195  1.25.2.2  martin }
    196  1.25.2.2  martin 
    197  1.25.2.2  martin static unsigned
    198  1.25.2.2  martin uno_tx_prepare(struct usbnet *un, struct mbuf *m, struct usbnet_chain *c)
    199  1.25.2.2  martin {
    200  1.25.2.2  martin 	return (*un->un_ops->uno_tx_prepare)(un, m, c);
    201  1.25.2.2  martin }
    202  1.25.2.2  martin 
    203  1.25.2.2  martin static void
    204  1.25.2.2  martin uno_rx_loop(struct usbnet *un, struct usbnet_chain *c, uint32_t total_len)
    205  1.25.2.2  martin {
    206  1.25.2.2  martin 	(*un->un_ops->uno_rx_loop)(un, c, total_len);
    207  1.25.2.2  martin }
    208  1.25.2.2  martin 
    209  1.25.2.2  martin static void
    210  1.25.2.2  martin uno_tick(struct usbnet *un)
    211  1.25.2.2  martin {
    212  1.25.2.2  martin 	if (un->un_ops->uno_tick)
    213  1.25.2.2  martin 		(*un->un_ops->uno_tick)(un);
    214  1.25.2.2  martin }
    215  1.25.2.2  martin 
    216  1.25.2.2  martin static void
    217  1.25.2.2  martin uno_intr(struct usbnet *un, usbd_status status)
    218  1.25.2.2  martin {
    219  1.25.2.2  martin 	if (un->un_ops->uno_intr)
    220  1.25.2.2  martin 		(*un->un_ops->uno_intr)(un, status);
    221  1.25.2.2  martin }
    222  1.25.2.2  martin 
    223  1.25.2.2  martin /* Interrupt handling. */
    224  1.25.2.2  martin 
    225  1.25.2.2  martin static struct mbuf *
    226  1.25.2.2  martin usbnet_newbuf(size_t buflen)
    227  1.25.2.2  martin {
    228  1.25.2.2  martin 	struct mbuf *m;
    229  1.25.2.2  martin 
    230  1.25.2.2  martin 	MGETHDR(m, M_DONTWAIT, MT_DATA);
    231  1.25.2.2  martin 	if (m == NULL)
    232  1.25.2.2  martin 		return NULL;
    233  1.25.2.2  martin 
    234  1.25.2.2  martin 	if (buflen > MHLEN - ETHER_ALIGN) {
    235  1.25.2.2  martin 		MCLGET(m, M_DONTWAIT);
    236  1.25.2.2  martin 		if (!(m->m_flags & M_EXT)) {
    237  1.25.2.2  martin 			m_freem(m);
    238  1.25.2.2  martin 			return NULL;
    239  1.25.2.2  martin 		}
    240  1.25.2.2  martin 	}
    241  1.25.2.2  martin 
    242  1.25.2.2  martin 	m_adj(m, ETHER_ALIGN);
    243  1.25.2.2  martin 	m->m_len = m->m_pkthdr.len = buflen;
    244  1.25.2.2  martin 
    245  1.25.2.2  martin 	return m;
    246  1.25.2.2  martin }
    247  1.25.2.2  martin 
    248  1.25.2.2  martin /*
    249  1.25.2.2  martin  * usbnet_rxeof() is designed to be the done callback for rx completion.
    250  1.25.2.2  martin  * it provides generic setup and finalisation, calls a different usbnet
    251  1.25.2.2  martin  * rx_loop callback in the middle, which can use usbnet_enqueue() to
    252  1.25.2.2  martin  * enqueue a packet for higher levels (or usbnet_input() if previously
    253  1.25.2.2  martin  * using if_input() path.)
    254  1.25.2.2  martin  */
    255  1.25.2.2  martin void
    256  1.25.2.2  martin usbnet_enqueue(struct usbnet * const un, uint8_t *buf, size_t buflen,
    257  1.25.2.2  martin 	       int csum_flags, uint32_t csum_data, int mbuf_flags)
    258  1.25.2.2  martin {
    259  1.25.2.2  martin 	USBNETHIST_FUNC();
    260  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
    261  1.25.2.2  martin 	struct usbnet_private * const unp __unused = un->un_pri;
    262  1.25.2.2  martin 	struct mbuf *m;
    263  1.25.2.2  martin 
    264  1.25.2.2  martin 	USBNETHIST_CALLARGSN(5, "%d: enter: len=%zu csf %x mbf %x",
    265  1.25.2.2  martin 	    unp->unp_number, buflen, csum_flags, mbuf_flags);
    266  1.25.2.2  martin 
    267  1.25.2.2  martin 	usbnet_isowned_rx(un);
    268  1.25.2.2  martin 
    269  1.25.2.2  martin 	m = usbnet_newbuf(buflen);
    270  1.25.2.2  martin 	if (m == NULL) {
    271  1.25.2.2  martin 		DPRINTF("%d: no memory", unp->unp_number, 0, 0, 0);
    272  1.25.2.2  martin 		ifp->if_ierrors++;
    273  1.25.2.2  martin 		return;
    274  1.25.2.2  martin 	}
    275  1.25.2.2  martin 
    276  1.25.2.2  martin 	m_set_rcvif(m, ifp);
    277  1.25.2.2  martin 	m->m_pkthdr.csum_flags = csum_flags;
    278  1.25.2.2  martin 	m->m_pkthdr.csum_data = csum_data;
    279  1.25.2.2  martin 	m->m_flags |= mbuf_flags;
    280  1.25.2.2  martin 	memcpy(mtod(m, uint8_t *), buf, buflen);
    281  1.25.2.2  martin 
    282  1.25.2.2  martin 	/* push the packet up */
    283  1.25.2.2  martin 	if_percpuq_enqueue(ifp->if_percpuq, m);
    284  1.25.2.2  martin }
    285  1.25.2.2  martin 
    286  1.25.2.2  martin void
    287  1.25.2.2  martin usbnet_input(struct usbnet * const un, uint8_t *buf, size_t buflen)
    288  1.25.2.2  martin {
    289  1.25.2.2  martin 	USBNETHIST_FUNC();
    290  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
    291  1.25.2.2  martin 	struct usbnet_private * const unp __unused = un->un_pri;
    292  1.25.2.2  martin 	struct mbuf *m;
    293  1.25.2.2  martin 
    294  1.25.2.2  martin 	USBNETHIST_CALLARGSN(5, "%d: enter: buf %jx len %ju",
    295  1.25.2.2  martin 	    unp->unp_number, (uintptr_t)buf, buflen, 0);
    296  1.25.2.2  martin 
    297  1.25.2.2  martin 	usbnet_isowned_rx(un);
    298  1.25.2.2  martin 
    299  1.25.2.2  martin 	m = usbnet_newbuf(buflen);
    300  1.25.2.2  martin 	if (m == NULL) {
    301  1.25.2.2  martin 		ifp->if_ierrors++;
    302  1.25.2.2  martin 		return;
    303  1.25.2.2  martin 	}
    304  1.25.2.2  martin 
    305  1.25.2.2  martin 	m_set_rcvif(m, ifp);
    306  1.25.2.2  martin 	memcpy(mtod(m, char *), buf, buflen);
    307  1.25.2.2  martin 
    308  1.25.2.2  martin 	/* push the packet up */
    309  1.25.2.2  martin 	if_input(ifp, m);
    310  1.25.2.2  martin }
    311  1.25.2.2  martin 
    312  1.25.2.2  martin /*
    313  1.25.2.2  martin  * A frame has been uploaded: pass the resulting mbuf chain up to
    314  1.25.2.2  martin  * the higher level protocols.
    315  1.25.2.2  martin  */
    316  1.25.2.2  martin static void
    317  1.25.2.2  martin usbnet_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status)
    318  1.25.2.2  martin {
    319  1.25.2.2  martin 	USBNETHIST_FUNC();
    320  1.25.2.2  martin 	struct usbnet_chain * const c = priv;
    321  1.25.2.2  martin 	struct usbnet * const un = c->unc_un;
    322  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    323  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
    324  1.25.2.2  martin 	uint32_t total_len;
    325  1.25.2.2  martin 
    326  1.25.2.2  martin 	USBNETHIST_CALLARGSN(5, "%d: enter: status %x xfer %jx",
    327  1.25.2.2  martin 	    unp->unp_number, status, (uintptr_t)xfer, 0);
    328  1.25.2.2  martin 
    329  1.25.2.2  martin 	mutex_enter(&unp->unp_rxlock);
    330  1.25.2.2  martin 
    331  1.25.2.2  martin 	if (unp->unp_dying || unp->unp_stopping ||
    332  1.25.2.2  martin 	    status == USBD_INVAL || status == USBD_NOT_STARTED ||
    333  1.25.2.2  martin 	    status == USBD_CANCELLED || !(ifp->if_flags & IFF_RUNNING))
    334  1.25.2.2  martin 		goto out;
    335  1.25.2.2  martin 
    336  1.25.2.2  martin 	if (status != USBD_NORMAL_COMPLETION) {
    337  1.25.2.2  martin 		if (usbd_ratecheck(&unp->unp_rx_notice))
    338  1.25.2.2  martin 			aprint_error_dev(un->un_dev, "usb errors on rx: %s\n",
    339  1.25.2.2  martin 			    usbd_errstr(status));
    340  1.25.2.2  martin 		if (status == USBD_STALLED)
    341  1.25.2.2  martin 			usbd_clear_endpoint_stall_async(unp->unp_ep[USBNET_ENDPT_RX]);
    342  1.25.2.2  martin 		goto done;
    343  1.25.2.2  martin 	}
    344  1.25.2.2  martin 
    345  1.25.2.2  martin 	usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
    346  1.25.2.2  martin 
    347  1.25.2.2  martin 	if (total_len > un->un_rx_bufsz) {
    348  1.25.2.2  martin 		aprint_error_dev(un->un_dev,
    349  1.25.2.2  martin 		    "rxeof: too large transfer (%u > %u)\n",
    350  1.25.2.2  martin 		    total_len, un->un_rx_bufsz);
    351  1.25.2.2  martin 		goto done;
    352  1.25.2.2  martin 	}
    353  1.25.2.2  martin 
    354  1.25.2.2  martin 	uno_rx_loop(un, c, total_len);
    355  1.25.2.2  martin 	usbnet_isowned_rx(un);
    356  1.25.2.2  martin 
    357  1.25.2.2  martin done:
    358  1.25.2.2  martin 	if (unp->unp_dying || unp->unp_stopping)
    359  1.25.2.2  martin 		goto out;
    360  1.25.2.2  martin 
    361  1.25.2.2  martin 	mutex_exit(&unp->unp_rxlock);
    362  1.25.2.2  martin 
    363  1.25.2.2  martin 	/* Setup new transfer. */
    364  1.25.2.2  martin 	usbd_setup_xfer(xfer, c, c->unc_buf, un->un_rx_bufsz,
    365  1.25.2.2  martin 	    un->un_rx_xfer_flags, USBD_NO_TIMEOUT, usbnet_rxeof);
    366  1.25.2.2  martin 	usbd_transfer(xfer);
    367  1.25.2.2  martin 	return;
    368  1.25.2.2  martin 
    369  1.25.2.2  martin out:
    370  1.25.2.2  martin 	mutex_exit(&unp->unp_rxlock);
    371  1.25.2.2  martin }
    372  1.25.2.2  martin 
    373  1.25.2.2  martin static void
    374  1.25.2.2  martin usbnet_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status)
    375  1.25.2.2  martin {
    376  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
    377  1.25.2.2  martin 	struct usbnet_chain * const c = priv;
    378  1.25.2.2  martin 	struct usbnet * const un = c->unc_un;
    379  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    380  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    381  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
    382  1.25.2.2  martin 
    383  1.25.2.2  martin 	USBNETHIST_CALLARGSN(5, "%d: enter: status %x xfer %jx",
    384  1.25.2.2  martin 	    unp->unp_number, status, (uintptr_t)xfer, 0);
    385  1.25.2.2  martin 
    386  1.25.2.2  martin 	mutex_enter(&unp->unp_txlock);
    387  1.25.2.2  martin 	if (unp->unp_stopping || unp->unp_dying) {
    388  1.25.2.2  martin 		mutex_exit(&unp->unp_txlock);
    389  1.25.2.2  martin 		return;
    390  1.25.2.2  martin 	}
    391  1.25.2.2  martin 
    392  1.25.2.2  martin 	KASSERT(cd->uncd_tx_cnt > 0);
    393  1.25.2.2  martin 	cd->uncd_tx_cnt--;
    394  1.25.2.2  martin 
    395  1.25.2.2  martin 	unp->unp_timer = 0;
    396  1.25.2.2  martin 
    397  1.25.2.2  martin 	switch (status) {
    398  1.25.2.2  martin 	case USBD_NOT_STARTED:
    399  1.25.2.2  martin 	case USBD_CANCELLED:
    400  1.25.2.2  martin 		break;
    401  1.25.2.2  martin 
    402  1.25.2.2  martin 	case USBD_NORMAL_COMPLETION:
    403  1.25.2.2  martin 		ifp->if_opackets++;
    404  1.25.2.2  martin 		break;
    405  1.25.2.2  martin 
    406  1.25.2.2  martin 	default:
    407  1.25.2.2  martin 
    408  1.25.2.2  martin 		ifp->if_oerrors++;
    409  1.25.2.2  martin 		if (usbd_ratecheck(&unp->unp_tx_notice))
    410  1.25.2.2  martin 			aprint_error_dev(un->un_dev, "usb error on tx: %s\n",
    411  1.25.2.2  martin 			    usbd_errstr(status));
    412  1.25.2.2  martin 		if (status == USBD_STALLED)
    413  1.25.2.2  martin 			usbd_clear_endpoint_stall_async(unp->unp_ep[USBNET_ENDPT_TX]);
    414  1.25.2.2  martin 		break;
    415  1.25.2.2  martin 	}
    416  1.25.2.2  martin 
    417  1.25.2.2  martin 	mutex_exit(&unp->unp_txlock);
    418  1.25.2.2  martin 
    419  1.25.2.2  martin 	if (status == USBD_NORMAL_COMPLETION && !IFQ_IS_EMPTY(&ifp->if_snd))
    420  1.25.2.2  martin 		(*ifp->if_start)(ifp);
    421  1.25.2.2  martin }
    422  1.25.2.2  martin 
    423  1.25.2.2  martin static void
    424  1.25.2.2  martin usbnet_pipe_intr(struct usbd_xfer *xfer, void *priv, usbd_status status)
    425  1.25.2.2  martin {
    426  1.25.2.3  martin 	USBNETHIST_FUNC();
    427  1.25.2.2  martin 	struct usbnet * const un = priv;
    428  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    429  1.25.2.2  martin 	struct usbnet_intr * const uni = un->un_intr;
    430  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
    431  1.25.2.2  martin 
    432  1.25.2.2  martin 	if (uni == NULL || unp->unp_dying || unp->unp_stopping ||
    433  1.25.2.2  martin 	    status == USBD_INVAL || status == USBD_NOT_STARTED ||
    434  1.25.2.3  martin 	    status == USBD_CANCELLED || !(ifp->if_flags & IFF_RUNNING)) {
    435  1.25.2.3  martin 		USBNETHIST_CALLARGS("%d: uni %jx d/s %x status %x",
    436  1.25.2.3  martin 		    unp->unp_number, (uintptr_t)uni,
    437  1.25.2.3  martin 		    (unp->unp_dying << 8) | unp->unp_stopping, status);
    438  1.25.2.2  martin 		return;
    439  1.25.2.3  martin 	}
    440  1.25.2.2  martin 
    441  1.25.2.2  martin 	if (status != USBD_NORMAL_COMPLETION) {
    442  1.25.2.2  martin 		if (usbd_ratecheck(&unp->unp_intr_notice)) {
    443  1.25.2.2  martin 			aprint_error_dev(un->un_dev, "usb error on intr: %s\n",
    444  1.25.2.2  martin 			    usbd_errstr(status));
    445  1.25.2.2  martin 		}
    446  1.25.2.2  martin 		if (status == USBD_STALLED)
    447  1.25.2.2  martin 			usbd_clear_endpoint_stall_async(unp->unp_ep[USBNET_ENDPT_INTR]);
    448  1.25.2.3  martin 		USBNETHIST_CALLARGS("%d: not normal status %x",
    449  1.25.2.3  martin 		    unp->unp_number, status, 0, 0);
    450  1.25.2.2  martin 		return;
    451  1.25.2.2  martin 	}
    452  1.25.2.2  martin 
    453  1.25.2.2  martin 	uno_intr(un, status);
    454  1.25.2.2  martin }
    455  1.25.2.2  martin 
    456  1.25.2.2  martin static void
    457  1.25.2.2  martin usbnet_start_locked(struct ifnet *ifp)
    458  1.25.2.2  martin {
    459  1.25.2.3  martin 	USBNETHIST_FUNC();
    460  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
    461  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    462  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    463  1.25.2.2  martin 	struct mbuf *m;
    464  1.25.2.2  martin 	unsigned length;
    465  1.25.2.3  martin 	bool done_transmit = false;
    466  1.25.2.2  martin 	int idx;
    467  1.25.2.2  martin 
    468  1.25.2.3  martin 	USBNETHIST_CALLARGS("%d: tx_cnt %d list_cnt %d link %d",
    469  1.25.2.3  martin 	    unp->unp_number, cd->uncd_tx_cnt, un->un_tx_list_cnt,
    470  1.25.2.3  martin 	    unp->unp_link);
    471  1.25.2.3  martin 
    472  1.25.2.2  martin 	usbnet_isowned_tx(un);
    473  1.25.2.2  martin 	KASSERT(cd->uncd_tx_cnt <= un->un_tx_list_cnt);
    474  1.25.2.2  martin 
    475  1.25.2.2  martin 	if (!unp->unp_link || (ifp->if_flags & IFF_RUNNING) == 0) {
    476  1.25.2.2  martin 		DPRINTF("start called no link (%x) or running (flags %x)",
    477  1.25.2.2  martin 		    unp->unp_link, ifp->if_flags, 0, 0);
    478  1.25.2.2  martin 		return;
    479  1.25.2.2  martin 	}
    480  1.25.2.2  martin 
    481  1.25.2.2  martin 	if (cd->uncd_tx_cnt == un->un_tx_list_cnt) {
    482  1.25.2.2  martin 		DPRINTF("start called, tx busy (%jx == %jx)",
    483  1.25.2.2  martin 		    cd->uncd_tx_cnt, un->un_tx_list_cnt, 0, 0);
    484  1.25.2.2  martin 		return;
    485  1.25.2.2  martin 	}
    486  1.25.2.2  martin 
    487  1.25.2.2  martin 	idx = cd->uncd_tx_prod;
    488  1.25.2.2  martin 	while (cd->uncd_tx_cnt < un->un_tx_list_cnt) {
    489  1.25.2.2  martin 		IFQ_POLL(&ifp->if_snd, m);
    490  1.25.2.2  martin 		if (m == NULL) {
    491  1.25.2.2  martin 			DPRINTF("start called, queue empty", 0, 0, 0, 0);
    492  1.25.2.2  martin 			break;
    493  1.25.2.2  martin 		}
    494  1.25.2.2  martin 		KASSERT(m->m_pkthdr.len <= un->un_tx_bufsz);
    495  1.25.2.2  martin 
    496  1.25.2.2  martin 		struct usbnet_chain *c = &cd->uncd_tx_chain[idx];
    497  1.25.2.2  martin 
    498  1.25.2.2  martin 		length = uno_tx_prepare(un, m, c);
    499  1.25.2.2  martin 		if (length == 0) {
    500  1.25.2.2  martin 			DPRINTF("uno_tx_prepare gave zero length", 0, 0, 0, 0);
    501  1.25.2.2  martin 			ifp->if_oerrors++;
    502  1.25.2.2  martin 			break;
    503  1.25.2.2  martin 		}
    504  1.25.2.2  martin 
    505  1.25.2.2  martin 		if (__predict_false(c->unc_xfer == NULL)) {
    506  1.25.2.2  martin 			DPRINTF("unc_xfer is NULL", 0, 0, 0, 0);
    507  1.25.2.2  martin 			ifp->if_oerrors++;
    508  1.25.2.2  martin 			break;
    509  1.25.2.2  martin 		}
    510  1.25.2.2  martin 
    511  1.25.2.2  martin 		usbd_setup_xfer(c->unc_xfer, c, c->unc_buf, length,
    512  1.25.2.2  martin 		    un->un_tx_xfer_flags, 10000, usbnet_txeof);
    513  1.25.2.2  martin 
    514  1.25.2.2  martin 		/* Transmit */
    515  1.25.2.2  martin 		usbd_status err = usbd_transfer(c->unc_xfer);
    516  1.25.2.2  martin 		if (err != USBD_IN_PROGRESS) {
    517  1.25.2.2  martin 			DPRINTF("usbd_transfer on %jx for %ju bytes: %d",
    518  1.25.2.2  martin 			    (uintptr_t)c->unc_buf, length, err, 0);
    519  1.25.2.2  martin 			ifp->if_oerrors++;
    520  1.25.2.2  martin 			break;
    521  1.25.2.2  martin 		}
    522  1.25.2.3  martin 		done_transmit = true;
    523  1.25.2.2  martin 
    524  1.25.2.2  martin 		IFQ_DEQUEUE(&ifp->if_snd, m);
    525  1.25.2.2  martin 
    526  1.25.2.2  martin 		/*
    527  1.25.2.2  martin 		 * If there's a BPF listener, bounce a copy of this frame
    528  1.25.2.2  martin 		 * to him.
    529  1.25.2.2  martin 		 */
    530  1.25.2.2  martin 		bpf_mtap(ifp, m, BPF_D_OUT);
    531  1.25.2.2  martin 		m_freem(m);
    532  1.25.2.2  martin 
    533  1.25.2.2  martin 		idx = (idx + 1) % un->un_tx_list_cnt;
    534  1.25.2.2  martin 		cd->uncd_tx_cnt++;
    535  1.25.2.2  martin 	}
    536  1.25.2.2  martin 	cd->uncd_tx_prod = idx;
    537  1.25.2.2  martin 
    538  1.25.2.3  martin 	DPRINTF("finished with start; tx_cnt %d list_cnt %d link %d",
    539  1.25.2.3  martin 	    cd->uncd_tx_cnt, un->un_tx_list_cnt, unp->unp_link, 0);
    540  1.25.2.3  martin 
    541  1.25.2.2  martin 	/*
    542  1.25.2.2  martin 	 * Set a timeout in case the chip goes out to lunch.
    543  1.25.2.2  martin 	 */
    544  1.25.2.3  martin 	if (done_transmit)
    545  1.25.2.3  martin 		unp->unp_timer = 5;
    546  1.25.2.2  martin }
    547  1.25.2.2  martin 
    548  1.25.2.2  martin static void
    549  1.25.2.2  martin usbnet_start(struct ifnet *ifp)
    550  1.25.2.2  martin {
    551  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
    552  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    553  1.25.2.2  martin 
    554  1.25.2.3  martin 	USBNETHIST_FUNC();
    555  1.25.2.3  martin 	USBNETHIST_CALLARGS("%d, stopping %d",
    556  1.25.2.3  martin 	    unp->unp_number, unp->unp_stopping, 0, 0);
    557  1.25.2.3  martin 
    558  1.25.2.2  martin 	mutex_enter(&unp->unp_txlock);
    559  1.25.2.2  martin 	if (!unp->unp_stopping)
    560  1.25.2.2  martin 		usbnet_start_locked(ifp);
    561  1.25.2.2  martin 	mutex_exit(&unp->unp_txlock);
    562  1.25.2.2  martin }
    563  1.25.2.2  martin 
    564  1.25.2.2  martin /*
    565  1.25.2.2  martin  * Chain management.
    566  1.25.2.2  martin  *
    567  1.25.2.2  martin  * RX and TX are identical. Keep them that way.
    568  1.25.2.2  martin  */
    569  1.25.2.2  martin 
    570  1.25.2.2  martin /* Start of common RX functions */
    571  1.25.2.2  martin 
    572  1.25.2.2  martin static size_t
    573  1.25.2.2  martin usbnet_rx_list_size(struct usbnet_cdata * const cd, struct usbnet * const un)
    574  1.25.2.2  martin {
    575  1.25.2.2  martin 	return sizeof(*cd->uncd_rx_chain) * un->un_rx_list_cnt;
    576  1.25.2.2  martin }
    577  1.25.2.2  martin 
    578  1.25.2.2  martin static void
    579  1.25.2.2  martin usbnet_rx_list_alloc(struct usbnet * const un)
    580  1.25.2.2  martin {
    581  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    582  1.25.2.2  martin 
    583  1.25.2.2  martin 	cd->uncd_rx_chain = kmem_zalloc(usbnet_rx_list_size(cd, un), KM_SLEEP);
    584  1.25.2.2  martin }
    585  1.25.2.2  martin 
    586  1.25.2.2  martin static void
    587  1.25.2.2  martin usbnet_rx_list_free(struct usbnet * const un)
    588  1.25.2.2  martin {
    589  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    590  1.25.2.2  martin 
    591  1.25.2.2  martin 	if (cd->uncd_rx_chain) {
    592  1.25.2.2  martin 		kmem_free(cd->uncd_rx_chain, usbnet_rx_list_size(cd, un));
    593  1.25.2.2  martin 		cd->uncd_rx_chain = NULL;
    594  1.25.2.2  martin 	}
    595  1.25.2.2  martin }
    596  1.25.2.2  martin 
    597  1.25.2.2  martin static int
    598  1.25.2.2  martin usbnet_rx_list_init(struct usbnet * const un)
    599  1.25.2.2  martin {
    600  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    601  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    602  1.25.2.2  martin 
    603  1.25.2.2  martin 	for (size_t i = 0; i < un->un_rx_list_cnt; i++) {
    604  1.25.2.2  martin 		struct usbnet_chain *c = &cd->uncd_rx_chain[i];
    605  1.25.2.2  martin 
    606  1.25.2.2  martin 		c->unc_un = un;
    607  1.25.2.2  martin 		if (c->unc_xfer == NULL) {
    608  1.25.2.2  martin 			int err = usbd_create_xfer(unp->unp_ep[USBNET_ENDPT_RX],
    609  1.25.2.2  martin 			    un->un_rx_bufsz, un->un_rx_xfer_flags, 0,
    610  1.25.2.2  martin 			    &c->unc_xfer);
    611  1.25.2.2  martin 			if (err)
    612  1.25.2.2  martin 				return err;
    613  1.25.2.2  martin 			c->unc_buf = usbd_get_buffer(c->unc_xfer);
    614  1.25.2.2  martin 		}
    615  1.25.2.2  martin 	}
    616  1.25.2.2  martin 
    617  1.25.2.2  martin 	return 0;
    618  1.25.2.2  martin }
    619  1.25.2.2  martin 
    620  1.25.2.2  martin static void
    621  1.25.2.2  martin usbnet_rx_list_fini(struct usbnet * const un)
    622  1.25.2.2  martin {
    623  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    624  1.25.2.2  martin 
    625  1.25.2.2  martin 	for (size_t i = 0; i < un->un_rx_list_cnt; i++) {
    626  1.25.2.2  martin 		struct usbnet_chain *c = &cd->uncd_rx_chain[i];
    627  1.25.2.2  martin 
    628  1.25.2.2  martin 		if (c->unc_xfer != NULL) {
    629  1.25.2.2  martin 			usbd_destroy_xfer(c->unc_xfer);
    630  1.25.2.2  martin 			c->unc_xfer = NULL;
    631  1.25.2.2  martin 			c->unc_buf = NULL;
    632  1.25.2.2  martin 		}
    633  1.25.2.2  martin 	}
    634  1.25.2.2  martin }
    635  1.25.2.2  martin 
    636  1.25.2.2  martin /* End of common RX functions */
    637  1.25.2.2  martin 
    638  1.25.2.2  martin static void
    639  1.25.2.2  martin usbnet_rx_start_pipes(struct usbnet * const un)
    640  1.25.2.2  martin {
    641  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    642  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    643  1.25.2.2  martin 
    644  1.25.2.2  martin 	mutex_enter(&unp->unp_rxlock);
    645  1.25.2.2  martin 	mutex_enter(&unp->unp_txlock);
    646  1.25.2.2  martin 	unp->unp_stopping = false;
    647  1.25.2.2  martin 
    648  1.25.2.2  martin 	for (size_t i = 0; i < un->un_rx_list_cnt; i++) {
    649  1.25.2.2  martin 		struct usbnet_chain *c = &cd->uncd_rx_chain[i];
    650  1.25.2.2  martin 
    651  1.25.2.2  martin 		usbd_setup_xfer(c->unc_xfer, c, c->unc_buf, un->un_rx_bufsz,
    652  1.25.2.2  martin 		    un->un_rx_xfer_flags, USBD_NO_TIMEOUT, usbnet_rxeof);
    653  1.25.2.2  martin 		usbd_transfer(c->unc_xfer);
    654  1.25.2.2  martin 	}
    655  1.25.2.2  martin 
    656  1.25.2.2  martin 	mutex_exit(&unp->unp_txlock);
    657  1.25.2.2  martin 	mutex_exit(&unp->unp_rxlock);
    658  1.25.2.2  martin }
    659  1.25.2.2  martin 
    660  1.25.2.2  martin /* Start of common TX functions */
    661  1.25.2.2  martin 
    662  1.25.2.2  martin static size_t
    663  1.25.2.2  martin usbnet_tx_list_size(struct usbnet_cdata * const cd, struct usbnet * const un)
    664  1.25.2.2  martin {
    665  1.25.2.2  martin 	return sizeof(*cd->uncd_tx_chain) * un->un_tx_list_cnt;
    666  1.25.2.2  martin }
    667  1.25.2.2  martin 
    668  1.25.2.2  martin static void
    669  1.25.2.2  martin usbnet_tx_list_alloc(struct usbnet * const un)
    670  1.25.2.2  martin {
    671  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    672  1.25.2.2  martin 
    673  1.25.2.2  martin 	cd->uncd_tx_chain = kmem_zalloc(usbnet_tx_list_size(cd, un), KM_SLEEP);
    674  1.25.2.2  martin }
    675  1.25.2.2  martin 
    676  1.25.2.2  martin static void
    677  1.25.2.2  martin usbnet_tx_list_free(struct usbnet * const un)
    678  1.25.2.2  martin {
    679  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    680  1.25.2.2  martin 
    681  1.25.2.2  martin 	if (cd->uncd_tx_chain) {
    682  1.25.2.2  martin 		kmem_free(cd->uncd_tx_chain, usbnet_tx_list_size(cd, un));
    683  1.25.2.2  martin 		cd->uncd_tx_chain = NULL;
    684  1.25.2.2  martin 	}
    685  1.25.2.2  martin }
    686  1.25.2.2  martin 
    687  1.25.2.2  martin static int
    688  1.25.2.2  martin usbnet_tx_list_init(struct usbnet * const un)
    689  1.25.2.2  martin {
    690  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    691  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    692  1.25.2.2  martin 
    693  1.25.2.2  martin 	for (size_t i = 0; i < un->un_tx_list_cnt; i++) {
    694  1.25.2.2  martin 		struct usbnet_chain *c = &cd->uncd_tx_chain[i];
    695  1.25.2.2  martin 
    696  1.25.2.2  martin 		c->unc_un = un;
    697  1.25.2.2  martin 		if (c->unc_xfer == NULL) {
    698  1.25.2.2  martin 			int err = usbd_create_xfer(unp->unp_ep[USBNET_ENDPT_TX],
    699  1.25.2.2  martin 			    un->un_tx_bufsz, un->un_tx_xfer_flags, 0,
    700  1.25.2.2  martin 			    &c->unc_xfer);
    701  1.25.2.2  martin 			if (err)
    702  1.25.2.2  martin 				return err;
    703  1.25.2.2  martin 			c->unc_buf = usbd_get_buffer(c->unc_xfer);
    704  1.25.2.2  martin 		}
    705  1.25.2.2  martin 	}
    706  1.25.2.2  martin 
    707  1.25.2.2  martin 	return 0;
    708  1.25.2.2  martin }
    709  1.25.2.2  martin 
    710  1.25.2.2  martin static void
    711  1.25.2.2  martin usbnet_tx_list_fini(struct usbnet * const un)
    712  1.25.2.2  martin {
    713  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
    714  1.25.2.2  martin 
    715  1.25.2.2  martin 	for (size_t i = 0; i < un->un_tx_list_cnt; i++) {
    716  1.25.2.2  martin 		struct usbnet_chain *c = &cd->uncd_tx_chain[i];
    717  1.25.2.2  martin 
    718  1.25.2.2  martin 		if (c->unc_xfer != NULL) {
    719  1.25.2.2  martin 			usbd_destroy_xfer(c->unc_xfer);
    720  1.25.2.2  martin 			c->unc_xfer = NULL;
    721  1.25.2.2  martin 			c->unc_buf = NULL;
    722  1.25.2.2  martin 		}
    723  1.25.2.2  martin 	}
    724  1.25.2.2  martin 	cd->uncd_tx_prod = cd->uncd_tx_cnt = 0;
    725  1.25.2.2  martin }
    726  1.25.2.2  martin 
    727  1.25.2.2  martin /* End of common TX functions */
    728  1.25.2.2  martin 
    729  1.25.2.2  martin /* Endpoint pipe management. */
    730  1.25.2.2  martin 
    731  1.25.2.2  martin static void
    732  1.25.2.2  martin usbnet_ep_close_pipes(struct usbnet * const un)
    733  1.25.2.2  martin {
    734  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    735  1.25.2.2  martin 
    736  1.25.2.2  martin 	for (size_t i = 0; i < __arraycount(unp->unp_ep); i++) {
    737  1.25.2.2  martin 		if (unp->unp_ep[i] == NULL)
    738  1.25.2.2  martin 			continue;
    739  1.25.2.2  martin 		usbd_status err = usbd_close_pipe(unp->unp_ep[i]);
    740  1.25.2.2  martin 		if (err)
    741  1.25.2.2  martin 			aprint_error_dev(un->un_dev, "close pipe %zu: %s\n", i,
    742  1.25.2.2  martin 			    usbd_errstr(err));
    743  1.25.2.2  martin 		unp->unp_ep[i] = NULL;
    744  1.25.2.2  martin 	}
    745  1.25.2.2  martin }
    746  1.25.2.2  martin 
    747  1.25.2.2  martin static usbd_status
    748  1.25.2.2  martin usbnet_ep_open_pipes(struct usbnet * const un)
    749  1.25.2.2  martin {
    750  1.25.2.2  martin 	struct usbnet_intr * const uni = un->un_intr;
    751  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    752  1.25.2.2  martin 
    753  1.25.2.2  martin 	for (size_t i = 0; i < __arraycount(unp->unp_ep); i++) {
    754  1.25.2.2  martin 		usbd_status err;
    755  1.25.2.2  martin 
    756  1.25.2.2  martin 		if (un->un_ed[i] == 0)
    757  1.25.2.2  martin 			continue;
    758  1.25.2.2  martin 
    759  1.25.2.2  martin 		if (i == USBNET_ENDPT_INTR && uni) {
    760  1.25.2.2  martin 			err = usbd_open_pipe_intr(un->un_iface, un->un_ed[i],
    761  1.25.2.2  martin 			    USBD_EXCLUSIVE_USE | USBD_MPSAFE, &unp->unp_ep[i], un,
    762  1.25.2.2  martin 			    uni->uni_buf, uni->uni_bufsz, usbnet_pipe_intr,
    763  1.25.2.2  martin 			    uni->uni_interval);
    764  1.25.2.2  martin 		} else {
    765  1.25.2.2  martin 			err = usbd_open_pipe(un->un_iface, un->un_ed[i],
    766  1.25.2.2  martin 			    USBD_EXCLUSIVE_USE | USBD_MPSAFE, &unp->unp_ep[i]);
    767  1.25.2.2  martin 		}
    768  1.25.2.2  martin 		if (err) {
    769  1.25.2.2  martin 			usbnet_ep_close_pipes(un);
    770  1.25.2.2  martin 			return err;
    771  1.25.2.2  martin 		}
    772  1.25.2.2  martin 	}
    773  1.25.2.2  martin 
    774  1.25.2.2  martin 	return USBD_NORMAL_COMPLETION;
    775  1.25.2.2  martin }
    776  1.25.2.2  martin 
    777  1.25.2.2  martin static usbd_status
    778  1.25.2.2  martin usbnet_ep_stop_pipes(struct usbnet * const un)
    779  1.25.2.2  martin {
    780  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    781  1.25.2.2  martin 	usbd_status err = USBD_NORMAL_COMPLETION;
    782  1.25.2.2  martin 
    783  1.25.2.2  martin 	for (size_t i = 0; i < __arraycount(unp->unp_ep); i++) {
    784  1.25.2.2  martin 		if (unp->unp_ep[i] == NULL)
    785  1.25.2.2  martin 			continue;
    786  1.25.2.2  martin 		usbd_status err2 = usbd_abort_pipe(unp->unp_ep[i]);
    787  1.25.2.2  martin 		if (err == USBD_NORMAL_COMPLETION && err2)
    788  1.25.2.2  martin 			err = err2;
    789  1.25.2.2  martin 	}
    790  1.25.2.2  martin 
    791  1.25.2.2  martin 	return err;
    792  1.25.2.2  martin }
    793  1.25.2.2  martin 
    794  1.25.2.2  martin int
    795  1.25.2.2  martin usbnet_init_rx_tx(struct usbnet * const un)
    796  1.25.2.2  martin {
    797  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
    798  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    799  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
    800  1.25.2.2  martin 	usbd_status err;
    801  1.25.2.2  martin 	int error = 0;
    802  1.25.2.2  martin 
    803  1.25.2.2  martin 	usbnet_isowned(un);
    804  1.25.2.2  martin 
    805  1.25.2.2  martin 	if (unp->unp_dying) {
    806  1.25.2.2  martin 		return EIO;
    807  1.25.2.2  martin 	}
    808  1.25.2.2  martin 	unp->unp_refcnt++;
    809  1.25.2.2  martin 
    810  1.25.2.2  martin 	/* Open RX and TX pipes. */
    811  1.25.2.2  martin 	err = usbnet_ep_open_pipes(un);
    812  1.25.2.2  martin 	if (err) {
    813  1.25.2.2  martin 		aprint_error_dev(un->un_dev, "open rx/tx pipes failed: %s\n",
    814  1.25.2.2  martin 		    usbd_errstr(err));
    815  1.25.2.2  martin 		error = EIO;
    816  1.25.2.2  martin 		goto out;
    817  1.25.2.2  martin 	}
    818  1.25.2.2  martin 
    819  1.25.2.2  martin 	/* Init RX ring. */
    820  1.25.2.2  martin 	if (usbnet_rx_list_init(un)) {
    821  1.25.2.2  martin 		aprint_error_dev(un->un_dev, "rx list init failed\n");
    822  1.25.2.2  martin 		error = ENOBUFS;
    823  1.25.2.2  martin 		goto out;
    824  1.25.2.2  martin 	}
    825  1.25.2.2  martin 
    826  1.25.2.2  martin 	/* Init TX ring. */
    827  1.25.2.2  martin 	if (usbnet_tx_list_init(un)) {
    828  1.25.2.2  martin 		aprint_error_dev(un->un_dev, "tx list init failed\n");
    829  1.25.2.2  martin 		error = ENOBUFS;
    830  1.25.2.2  martin 		goto out;
    831  1.25.2.2  martin 	}
    832  1.25.2.2  martin 
    833  1.25.2.2  martin 	/* Start up the receive pipe(s). */
    834  1.25.2.2  martin 	usbnet_rx_start_pipes(un);
    835  1.25.2.2  martin 
    836  1.25.2.2  martin 	/* Indicate we are up and running. */
    837  1.25.2.2  martin #if 0
    838  1.25.2.2  martin 	/* XXX if_mcast_op() can call this without ifnet locked */
    839  1.25.2.2  martin 	KASSERT(ifp->if_softc == NULL || IFNET_LOCKED(ifp));
    840  1.25.2.2  martin #endif
    841  1.25.2.2  martin 	ifp->if_flags |= IFF_RUNNING;
    842  1.25.2.2  martin 
    843  1.25.2.2  martin 	callout_schedule(&unp->unp_stat_ch, hz);
    844  1.25.2.2  martin 
    845  1.25.2.2  martin out:
    846  1.25.2.2  martin 	if (error) {
    847  1.25.2.2  martin 		usbnet_rx_list_fini(un);
    848  1.25.2.2  martin 		usbnet_tx_list_fini(un);
    849  1.25.2.2  martin 		usbnet_ep_close_pipes(un);
    850  1.25.2.2  martin 	}
    851  1.25.2.2  martin 	if (--unp->unp_refcnt < 0)
    852  1.25.2.2  martin 		cv_broadcast(&unp->unp_detachcv);
    853  1.25.2.2  martin 
    854  1.25.2.2  martin 	usbnet_isowned(un);
    855  1.25.2.2  martin 
    856  1.25.2.2  martin 	return error;
    857  1.25.2.2  martin }
    858  1.25.2.2  martin 
    859  1.25.2.2  martin /* MII management. */
    860  1.25.2.2  martin 
    861  1.25.2.2  martin /*
    862  1.25.2.2  martin  * Access functions for MII.  Take the MII lock to call access MII regs.
    863  1.25.2.2  martin  * Two forms: usbnet (softc) lock currently held or not.
    864  1.25.2.2  martin  */
    865  1.25.2.2  martin void
    866  1.25.2.2  martin usbnet_lock_mii(struct usbnet *un)
    867  1.25.2.2  martin {
    868  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    869  1.25.2.2  martin 
    870  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
    871  1.25.2.2  martin 	unp->unp_refcnt++;
    872  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
    873  1.25.2.2  martin 
    874  1.25.2.2  martin 	mutex_enter(&unp->unp_miilock);
    875  1.25.2.2  martin }
    876  1.25.2.2  martin 
    877  1.25.2.2  martin void
    878  1.25.2.2  martin usbnet_lock_mii_un_locked(struct usbnet *un)
    879  1.25.2.2  martin {
    880  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    881  1.25.2.2  martin 
    882  1.25.2.2  martin 	usbnet_isowned(un);
    883  1.25.2.2  martin 
    884  1.25.2.2  martin 	unp->unp_refcnt++;
    885  1.25.2.2  martin 	mutex_enter(&unp->unp_miilock);
    886  1.25.2.2  martin }
    887  1.25.2.2  martin 
    888  1.25.2.2  martin void
    889  1.25.2.2  martin usbnet_unlock_mii(struct usbnet *un)
    890  1.25.2.2  martin {
    891  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    892  1.25.2.2  martin 
    893  1.25.2.2  martin 	mutex_exit(&unp->unp_miilock);
    894  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
    895  1.25.2.2  martin 	if (--unp->unp_refcnt < 0)
    896  1.25.2.2  martin 		cv_broadcast(&unp->unp_detachcv);
    897  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
    898  1.25.2.2  martin }
    899  1.25.2.2  martin 
    900  1.25.2.2  martin void
    901  1.25.2.2  martin usbnet_unlock_mii_un_locked(struct usbnet *un)
    902  1.25.2.2  martin {
    903  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    904  1.25.2.2  martin 
    905  1.25.2.2  martin 	usbnet_isowned(un);
    906  1.25.2.2  martin 
    907  1.25.2.2  martin 	mutex_exit(&unp->unp_miilock);
    908  1.25.2.2  martin 	if (--unp->unp_refcnt < 0)
    909  1.25.2.2  martin 		cv_broadcast(&unp->unp_detachcv);
    910  1.25.2.2  martin }
    911  1.25.2.2  martin 
    912  1.25.2.2  martin kmutex_t *
    913  1.25.2.2  martin usbnet_mutex_mii(struct usbnet *un)
    914  1.25.2.2  martin {
    915  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    916  1.25.2.2  martin 
    917  1.25.2.2  martin 	return &unp->unp_miilock;
    918  1.25.2.2  martin }
    919  1.25.2.2  martin 
    920  1.25.2.2  martin int
    921  1.25.2.2  martin usbnet_mii_readreg(device_t dev, int phy, int reg, uint16_t *val)
    922  1.25.2.2  martin {
    923  1.25.2.2  martin 	USBNETHIST_FUNC();
    924  1.25.2.2  martin 	struct usbnet * const un = device_private(dev);
    925  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    926  1.25.2.2  martin 	int err;
    927  1.25.2.2  martin 
    928  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
    929  1.25.2.2  martin 	if (unp->unp_dying) {
    930  1.25.2.2  martin 		mutex_exit(&unp->unp_lock);
    931  1.25.2.2  martin 		return EIO;
    932  1.25.2.2  martin 	}
    933  1.25.2.2  martin 
    934  1.25.2.2  martin 	usbnet_lock_mii_un_locked(un);
    935  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
    936  1.25.2.2  martin 	err = uno_read_reg(un, phy, reg, val);
    937  1.25.2.2  martin 	usbnet_unlock_mii(un);
    938  1.25.2.2  martin 
    939  1.25.2.2  martin 	if (err) {
    940  1.25.2.2  martin 		USBNETHIST_CALLARGS("read PHY failed: %d", err, 0, 0, 0);
    941  1.25.2.2  martin 		return err;
    942  1.25.2.2  martin 	}
    943  1.25.2.2  martin 
    944  1.25.2.2  martin 	return 0;
    945  1.25.2.2  martin }
    946  1.25.2.2  martin 
    947  1.25.2.2  martin int
    948  1.25.2.2  martin usbnet_mii_writereg(device_t dev, int phy, int reg, uint16_t val)
    949  1.25.2.2  martin {
    950  1.25.2.2  martin 	USBNETHIST_FUNC();
    951  1.25.2.2  martin 	struct usbnet * const un = device_private(dev);
    952  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    953  1.25.2.2  martin 	int err;
    954  1.25.2.2  martin 
    955  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
    956  1.25.2.2  martin 	if (unp->unp_dying) {
    957  1.25.2.2  martin 		mutex_exit(&unp->unp_lock);
    958  1.25.2.2  martin 		return EIO;
    959  1.25.2.2  martin 	}
    960  1.25.2.2  martin 
    961  1.25.2.2  martin 	usbnet_lock_mii_un_locked(un);
    962  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
    963  1.25.2.2  martin 	err = uno_write_reg(un, phy, reg, val);
    964  1.25.2.2  martin 	usbnet_unlock_mii(un);
    965  1.25.2.2  martin 
    966  1.25.2.2  martin 	if (err) {
    967  1.25.2.2  martin 		USBNETHIST_CALLARGS("write PHY failed: %d", err, 0, 0, 0);
    968  1.25.2.2  martin 		return err;
    969  1.25.2.2  martin 	}
    970  1.25.2.2  martin 
    971  1.25.2.2  martin 	return 0;
    972  1.25.2.2  martin }
    973  1.25.2.2  martin 
    974  1.25.2.2  martin void
    975  1.25.2.2  martin usbnet_mii_statchg(struct ifnet *ifp)
    976  1.25.2.2  martin {
    977  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
    978  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
    979  1.25.2.2  martin 
    980  1.25.2.2  martin 	uno_mii_statchg(un, ifp);
    981  1.25.2.2  martin }
    982  1.25.2.2  martin 
    983  1.25.2.2  martin static int
    984  1.25.2.2  martin usbnet_media_upd(struct ifnet *ifp)
    985  1.25.2.2  martin {
    986  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
    987  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
    988  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
    989  1.25.2.2  martin 	struct mii_data * const mii = usbnet_mii(un);
    990  1.25.2.2  martin 
    991  1.25.2.2  martin 	if (unp->unp_dying)
    992  1.25.2.2  martin 		return EIO;
    993  1.25.2.2  martin 
    994  1.25.2.2  martin 	unp->unp_link = false;
    995  1.25.2.2  martin 
    996  1.25.2.2  martin 	if (mii->mii_instance) {
    997  1.25.2.2  martin 		struct mii_softc *miisc;
    998  1.25.2.2  martin 
    999  1.25.2.2  martin 		LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
   1000  1.25.2.2  martin 			mii_phy_reset(miisc);
   1001  1.25.2.2  martin 	}
   1002  1.25.2.2  martin 
   1003  1.25.2.2  martin 	return ether_mediachange(ifp);
   1004  1.25.2.2  martin }
   1005  1.25.2.2  martin 
   1006  1.25.2.2  martin /* ioctl */
   1007  1.25.2.2  martin 
   1008  1.25.2.2  martin static int
   1009  1.25.2.2  martin usbnet_ifflags_cb(struct ethercom *ec)
   1010  1.25.2.2  martin {
   1011  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1012  1.25.2.2  martin 	struct ifnet *ifp = &ec->ec_if;
   1013  1.25.2.2  martin 	struct usbnet *un = ifp->if_softc;
   1014  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1015  1.25.2.2  martin 	int rv = 0;
   1016  1.25.2.2  martin 
   1017  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
   1018  1.25.2.2  martin 
   1019  1.25.2.2  martin 	const int changed = ifp->if_flags ^ unp->unp_if_flags;
   1020  1.25.2.2  martin 	if ((changed & ~(IFF_CANTCHANGE | IFF_DEBUG)) == 0) {
   1021  1.25.2.2  martin 		unp->unp_if_flags = ifp->if_flags;
   1022  1.25.2.2  martin 		if ((changed & IFF_PROMISC) != 0)
   1023  1.25.2.2  martin 			rv = ENETRESET;
   1024  1.25.2.2  martin 	} else {
   1025  1.25.2.2  martin 		rv = ENETRESET;
   1026  1.25.2.2  martin 	}
   1027  1.25.2.2  martin 
   1028  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
   1029  1.25.2.2  martin 
   1030  1.25.2.2  martin 	return rv;
   1031  1.25.2.2  martin }
   1032  1.25.2.2  martin 
   1033  1.25.2.2  martin static int
   1034  1.25.2.2  martin usbnet_ioctl(struct ifnet *ifp, u_long cmd, void *data)
   1035  1.25.2.2  martin {
   1036  1.25.2.2  martin 	USBNETHIST_FUNC();
   1037  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
   1038  1.25.2.2  martin 	struct usbnet_private * const unp __unused = un->un_pri;
   1039  1.25.2.2  martin 	int error;
   1040  1.25.2.2  martin 
   1041  1.25.2.2  martin 	USBNETHIST_CALLARGSN(11, "%d: enter %jx data %x",
   1042  1.25.2.2  martin 	    unp->unp_number, cmd, (uintptr_t)data, 0);
   1043  1.25.2.2  martin 
   1044  1.25.2.2  martin 	if (un->un_ops->uno_override_ioctl)
   1045  1.25.2.2  martin 		return uno_override_ioctl(un, ifp, cmd, data);
   1046  1.25.2.2  martin 
   1047  1.25.2.2  martin 	error = ether_ioctl(ifp, cmd, data);
   1048  1.25.2.2  martin 	if (error == ENETRESET)
   1049  1.25.2.2  martin 		error = uno_ioctl(un, ifp, cmd, data);
   1050  1.25.2.2  martin 
   1051  1.25.2.2  martin 	return error;
   1052  1.25.2.2  martin }
   1053  1.25.2.2  martin 
   1054  1.25.2.2  martin /*
   1055  1.25.2.2  martin  * Generic stop network function:
   1056  1.25.2.2  martin  *	- mark as stopping
   1057  1.25.2.2  martin  *	- call DD routine to stop the device
   1058  1.25.2.2  martin  *	- turn off running, timer, statchg callout, link
   1059  1.25.2.2  martin  *	- stop transfers
   1060  1.25.2.2  martin  *	- free RX and TX resources
   1061  1.25.2.2  martin  *	- close pipes
   1062  1.25.2.2  martin  *
   1063  1.25.2.2  martin  * usbnet_stop() is exported for drivers to use, expects lock held.
   1064  1.25.2.2  martin  *
   1065  1.25.2.2  martin  * usbnet_stop_ifp() is for the if_stop handler.
   1066  1.25.2.2  martin  */
   1067  1.25.2.2  martin void
   1068  1.25.2.2  martin usbnet_stop(struct usbnet *un, struct ifnet *ifp, int disable)
   1069  1.25.2.2  martin {
   1070  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1071  1.25.2.2  martin 
   1072  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1073  1.25.2.2  martin 
   1074  1.25.2.2  martin 	usbnet_isowned(un);
   1075  1.25.2.2  martin 
   1076  1.25.2.2  martin 	mutex_enter(&unp->unp_rxlock);
   1077  1.25.2.2  martin 	mutex_enter(&unp->unp_txlock);
   1078  1.25.2.2  martin 	unp->unp_stopping = true;
   1079  1.25.2.2  martin 	mutex_exit(&unp->unp_txlock);
   1080  1.25.2.2  martin 	mutex_exit(&unp->unp_rxlock);
   1081  1.25.2.2  martin 
   1082  1.25.2.2  martin 	uno_stop(un, ifp, disable);
   1083  1.25.2.2  martin 
   1084  1.25.2.2  martin 	/*
   1085  1.25.2.2  martin 	 * XXXSMP Would like to
   1086  1.25.2.2  martin 	 *	KASSERT(IFNET_LOCKED(ifp))
   1087  1.25.2.2  martin 	 * here but the locking order is:
   1088  1.25.2.2  martin 	 *	ifnet -> unlock -> rxlock -> txlock
   1089  1.25.2.2  martin 	 * and unlock is already held.
   1090  1.25.2.2  martin 	 */
   1091  1.25.2.2  martin 	ifp->if_flags &= ~IFF_RUNNING;
   1092  1.25.2.2  martin 	unp->unp_timer = 0;
   1093  1.25.2.2  martin 
   1094  1.25.2.3  martin 	callout_halt(&unp->unp_stat_ch, &unp->unp_lock);
   1095  1.25.2.3  martin 	usb_rem_task_wait(un->un_udev, &unp->unp_ticktask, USB_TASKQ_DRIVER,
   1096  1.25.2.3  martin 	    &unp->unp_lock);
   1097  1.25.2.2  martin 
   1098  1.25.2.2  martin 	/* Stop transfers. */
   1099  1.25.2.2  martin 	usbnet_ep_stop_pipes(un);
   1100  1.25.2.2  martin 
   1101  1.25.2.2  martin 	/* Free RX/TX resources. */
   1102  1.25.2.2  martin 	usbnet_rx_list_fini(un);
   1103  1.25.2.2  martin 	usbnet_tx_list_fini(un);
   1104  1.25.2.2  martin 
   1105  1.25.2.2  martin 	/* Close pipes. */
   1106  1.25.2.2  martin 	usbnet_ep_close_pipes(un);
   1107  1.25.2.2  martin }
   1108  1.25.2.2  martin 
   1109  1.25.2.2  martin static void
   1110  1.25.2.2  martin usbnet_stop_ifp(struct ifnet *ifp, int disable)
   1111  1.25.2.2  martin {
   1112  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
   1113  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1114  1.25.2.2  martin 
   1115  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
   1116  1.25.2.2  martin 	usbnet_stop(un, ifp, disable);
   1117  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
   1118  1.25.2.2  martin }
   1119  1.25.2.2  martin 
   1120  1.25.2.2  martin /*
   1121  1.25.2.2  martin  * Generic tick task function.
   1122  1.25.2.2  martin  *
   1123  1.25.2.2  martin  * usbnet_tick() is triggered from a callout, and triggers a call to
   1124  1.25.2.2  martin  * usbnet_tick_task() from the usb_task subsystem.
   1125  1.25.2.2  martin  */
   1126  1.25.2.2  martin static void
   1127  1.25.2.2  martin usbnet_tick(void *arg)
   1128  1.25.2.2  martin {
   1129  1.25.2.3  martin 	USBNETHIST_FUNC();
   1130  1.25.2.2  martin 	struct usbnet * const un = arg;
   1131  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1132  1.25.2.2  martin 
   1133  1.25.2.3  martin 	USBNETHIST_CALLARGSN(10, "%d: enter", unp->unp_number, 0, 0, 0);
   1134  1.25.2.3  martin 
   1135  1.25.2.3  martin 	if (unp != NULL && !unp->unp_stopping && !unp->unp_dying) {
   1136  1.25.2.2  martin 		/* Perform periodic stuff in process context */
   1137  1.25.2.2  martin 		usb_add_task(un->un_udev, &unp->unp_ticktask, USB_TASKQ_DRIVER);
   1138  1.25.2.2  martin 	}
   1139  1.25.2.2  martin }
   1140  1.25.2.2  martin 
   1141  1.25.2.2  martin static void
   1142  1.25.2.2  martin usbnet_watchdog(struct ifnet *ifp)
   1143  1.25.2.2  martin {
   1144  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1145  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
   1146  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1147  1.25.2.2  martin 	struct usbnet_cdata * const cd = un_cdata(un);
   1148  1.25.2.2  martin 	usbd_status err;
   1149  1.25.2.2  martin 
   1150  1.25.2.2  martin 	ifp->if_oerrors++;
   1151  1.25.2.2  martin 	aprint_error_dev(un->un_dev, "watchdog timeout\n");
   1152  1.25.2.2  martin 
   1153  1.25.2.2  martin 	if (cd->uncd_tx_cnt > 0) {
   1154  1.25.2.2  martin 		DPRINTF("uncd_tx_cnt=%u non zero, aborting pipe", 0, 0, 0, 0);
   1155  1.25.2.2  martin 		err = usbd_abort_pipe(unp->unp_ep[USBNET_ENDPT_TX]);
   1156  1.25.2.2  martin 		if (err)
   1157  1.25.2.2  martin 			aprint_error_dev(un->un_dev, "pipe abort failed: %s\n",
   1158  1.25.2.2  martin 			    usbd_errstr(err));
   1159  1.25.2.2  martin 		if (cd->uncd_tx_cnt != 0)
   1160  1.25.2.2  martin 			DPRINTF("uncd_tx_cnt now %u", cd->uncd_tx_cnt, 0, 0, 0);
   1161  1.25.2.2  martin 	}
   1162  1.25.2.2  martin 
   1163  1.25.2.2  martin 	if (!IFQ_IS_EMPTY(&ifp->if_snd))
   1164  1.25.2.2  martin 		(*ifp->if_start)(ifp);
   1165  1.25.2.2  martin }
   1166  1.25.2.2  martin 
   1167  1.25.2.2  martin static void
   1168  1.25.2.2  martin usbnet_tick_task(void *arg)
   1169  1.25.2.2  martin {
   1170  1.25.2.3  martin 	USBNETHIST_FUNC();
   1171  1.25.2.2  martin 	struct usbnet * const un = arg;
   1172  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1173  1.25.2.2  martin 
   1174  1.25.2.3  martin 	if (unp == NULL)
   1175  1.25.2.3  martin 		return;
   1176  1.25.2.3  martin 
   1177  1.25.2.3  martin 	USBNETHIST_CALLARGSN(8, "%d: enter", unp->unp_number, 0, 0, 0);
   1178  1.25.2.3  martin 
   1179  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
   1180  1.25.2.2  martin 	if (unp->unp_stopping || unp->unp_dying) {
   1181  1.25.2.2  martin 		mutex_exit(&unp->unp_lock);
   1182  1.25.2.2  martin 		return;
   1183  1.25.2.2  martin 	}
   1184  1.25.2.2  martin 
   1185  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
   1186  1.25.2.2  martin 	struct mii_data * const mii = usbnet_mii(un);
   1187  1.25.2.2  martin 
   1188  1.25.2.2  martin 	unp->unp_refcnt++;
   1189  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
   1190  1.25.2.2  martin 
   1191  1.25.2.2  martin 	if (ifp && unp->unp_timer != 0 && --unp->unp_timer == 0)
   1192  1.25.2.2  martin 		usbnet_watchdog(ifp);
   1193  1.25.2.2  martin 
   1194  1.25.2.2  martin 	if (mii && ifp) {
   1195  1.25.2.3  martin 		DPRINTFN(8, "mii %jx ifp %jx", (uintptr_t)mii, (uintptr_t)ifp, 0, 0);
   1196  1.25.2.2  martin 		mii_tick(mii);
   1197  1.25.2.2  martin 
   1198  1.25.2.2  martin 		if (!unp->unp_link)
   1199  1.25.2.2  martin 			(*mii->mii_statchg)(ifp);
   1200  1.25.2.2  martin 	}
   1201  1.25.2.2  martin 
   1202  1.25.2.2  martin 	/* Call driver if requested. */
   1203  1.25.2.2  martin 	uno_tick(un);
   1204  1.25.2.2  martin 
   1205  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
   1206  1.25.2.2  martin 	if (--unp->unp_refcnt < 0)
   1207  1.25.2.2  martin 		cv_broadcast(&unp->unp_detachcv);
   1208  1.25.2.2  martin 	if (!unp->unp_stopping && !unp->unp_dying)
   1209  1.25.2.2  martin 		callout_schedule(&unp->unp_stat_ch, hz);
   1210  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
   1211  1.25.2.2  martin }
   1212  1.25.2.2  martin 
   1213  1.25.2.2  martin static int
   1214  1.25.2.2  martin usbnet_init(struct ifnet *ifp)
   1215  1.25.2.2  martin {
   1216  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1217  1.25.2.2  martin 	struct usbnet * const un = ifp->if_softc;
   1218  1.25.2.2  martin 
   1219  1.25.2.2  martin 	return uno_init(un, ifp);
   1220  1.25.2.2  martin }
   1221  1.25.2.2  martin 
   1222  1.25.2.2  martin 
   1223  1.25.2.2  martin /* Various accessors. */
   1224  1.25.2.2  martin 
   1225  1.25.2.2  martin void
   1226  1.25.2.2  martin usbnet_set_link(struct usbnet *un, bool link)
   1227  1.25.2.2  martin {
   1228  1.25.2.2  martin 	un->un_pri->unp_link = link;
   1229  1.25.2.2  martin }
   1230  1.25.2.2  martin 
   1231  1.25.2.2  martin void
   1232  1.25.2.2  martin usbnet_set_dying(struct usbnet *un, bool link)
   1233  1.25.2.2  martin {
   1234  1.25.2.2  martin 	un->un_pri->unp_dying = link;
   1235  1.25.2.2  martin }
   1236  1.25.2.2  martin 
   1237  1.25.2.2  martin struct ifnet *
   1238  1.25.2.2  martin usbnet_ifp(struct usbnet *un)
   1239  1.25.2.2  martin {
   1240  1.25.2.2  martin 	return &un->un_pri->unp_ec.ec_if;
   1241  1.25.2.2  martin }
   1242  1.25.2.2  martin 
   1243  1.25.2.2  martin struct ethercom *
   1244  1.25.2.2  martin usbnet_ec(struct usbnet *un)
   1245  1.25.2.2  martin {
   1246  1.25.2.2  martin 	return &un->un_pri->unp_ec;
   1247  1.25.2.2  martin }
   1248  1.25.2.2  martin 
   1249  1.25.2.2  martin struct mii_data *
   1250  1.25.2.2  martin usbnet_mii(struct usbnet *un)
   1251  1.25.2.2  martin {
   1252  1.25.2.2  martin 	return un->un_pri->unp_ec.ec_mii;
   1253  1.25.2.2  martin }
   1254  1.25.2.2  martin 
   1255  1.25.2.2  martin krndsource_t *
   1256  1.25.2.2  martin usbnet_rndsrc(struct usbnet *un)
   1257  1.25.2.2  martin {
   1258  1.25.2.2  martin 	return &un->un_pri->unp_rndsrc;
   1259  1.25.2.2  martin }
   1260  1.25.2.2  martin 
   1261  1.25.2.2  martin void *
   1262  1.25.2.2  martin usbnet_softc(struct usbnet *un)
   1263  1.25.2.2  martin {
   1264  1.25.2.2  martin 	return un->un_sc;
   1265  1.25.2.2  martin }
   1266  1.25.2.2  martin 
   1267  1.25.2.2  martin bool
   1268  1.25.2.2  martin usbnet_havelink(struct usbnet *un)
   1269  1.25.2.2  martin {
   1270  1.25.2.2  martin 	return un->un_pri->unp_link;
   1271  1.25.2.2  martin }
   1272  1.25.2.2  martin 
   1273  1.25.2.2  martin bool
   1274  1.25.2.2  martin usbnet_isdying(struct usbnet *un)
   1275  1.25.2.2  martin {
   1276  1.25.2.3  martin 	return un->un_pri == NULL || un->un_pri->unp_dying;
   1277  1.25.2.2  martin }
   1278  1.25.2.2  martin 
   1279  1.25.2.2  martin 
   1280  1.25.2.2  martin /* Locking. */
   1281  1.25.2.2  martin 
   1282  1.25.2.2  martin void
   1283  1.25.2.2  martin usbnet_lock(struct usbnet *un)
   1284  1.25.2.2  martin {
   1285  1.25.2.2  martin 	mutex_enter(&un->un_pri->unp_lock);
   1286  1.25.2.2  martin }
   1287  1.25.2.2  martin 
   1288  1.25.2.2  martin void
   1289  1.25.2.2  martin usbnet_unlock(struct usbnet *un)
   1290  1.25.2.2  martin {
   1291  1.25.2.2  martin 	mutex_exit(&un->un_pri->unp_lock);
   1292  1.25.2.2  martin }
   1293  1.25.2.2  martin 
   1294  1.25.2.2  martin kmutex_t *
   1295  1.25.2.2  martin usbnet_mutex(struct usbnet *un)
   1296  1.25.2.2  martin {
   1297  1.25.2.2  martin 	return &un->un_pri->unp_lock;
   1298  1.25.2.2  martin }
   1299  1.25.2.2  martin 
   1300  1.25.2.2  martin void
   1301  1.25.2.2  martin usbnet_lock_rx(struct usbnet *un)
   1302  1.25.2.2  martin {
   1303  1.25.2.2  martin 	mutex_enter(&un->un_pri->unp_rxlock);
   1304  1.25.2.2  martin }
   1305  1.25.2.2  martin 
   1306  1.25.2.2  martin void
   1307  1.25.2.2  martin usbnet_unlock_rx(struct usbnet *un)
   1308  1.25.2.2  martin {
   1309  1.25.2.2  martin 	mutex_exit(&un->un_pri->unp_rxlock);
   1310  1.25.2.2  martin }
   1311  1.25.2.2  martin 
   1312  1.25.2.2  martin kmutex_t *
   1313  1.25.2.2  martin usbnet_mutex_rx(struct usbnet *un)
   1314  1.25.2.2  martin {
   1315  1.25.2.2  martin 	return &un->un_pri->unp_rxlock;
   1316  1.25.2.2  martin }
   1317  1.25.2.2  martin 
   1318  1.25.2.2  martin void
   1319  1.25.2.2  martin usbnet_lock_tx(struct usbnet *un)
   1320  1.25.2.2  martin {
   1321  1.25.2.2  martin 	mutex_enter(&un->un_pri->unp_txlock);
   1322  1.25.2.2  martin }
   1323  1.25.2.2  martin 
   1324  1.25.2.2  martin void
   1325  1.25.2.2  martin usbnet_unlock_tx(struct usbnet *un)
   1326  1.25.2.2  martin {
   1327  1.25.2.2  martin 	mutex_exit(&un->un_pri->unp_txlock);
   1328  1.25.2.2  martin }
   1329  1.25.2.2  martin 
   1330  1.25.2.2  martin kmutex_t *
   1331  1.25.2.2  martin usbnet_mutex_tx(struct usbnet *un)
   1332  1.25.2.2  martin {
   1333  1.25.2.2  martin 	return &un->un_pri->unp_txlock;
   1334  1.25.2.2  martin }
   1335  1.25.2.2  martin 
   1336  1.25.2.2  martin /* Autoconf management. */
   1337  1.25.2.2  martin 
   1338  1.25.2.2  martin static bool
   1339  1.25.2.2  martin usbnet_empty_eaddr(struct usbnet * const un)
   1340  1.25.2.2  martin {
   1341  1.25.2.2  martin 	return (un->un_eaddr[0] == 0 && un->un_eaddr[1] == 0 &&
   1342  1.25.2.2  martin 		un->un_eaddr[2] == 0 && un->un_eaddr[3] == 0 &&
   1343  1.25.2.2  martin 		un->un_eaddr[4] == 0 && un->un_eaddr[5] == 0);
   1344  1.25.2.2  martin }
   1345  1.25.2.2  martin 
   1346  1.25.2.2  martin /*
   1347  1.25.2.2  martin  * usbnet_attach() and usbnet_attach_ifp() perform setup of the relevant
   1348  1.25.2.2  martin  * 'usbnet'.  The first is enough to enable device access (eg, endpoints
   1349  1.25.2.2  martin  * are connected and commands can be sent), and the second connects the
   1350  1.25.2.2  martin  * device to the system networking.
   1351  1.25.2.2  martin  *
   1352  1.25.2.2  martin  * Always call usbnet_detach(), even if usbnet_attach_ifp() is skippped.
   1353  1.25.2.2  martin  * Also usable as driver detach directly.
   1354  1.25.2.2  martin  *
   1355  1.25.2.2  martin  * To skip ethernet configuration (eg, point-to-point), make sure that
   1356  1.25.2.2  martin  * the un_eaddr[] is fully zero.
   1357  1.25.2.2  martin  */
   1358  1.25.2.2  martin 
   1359  1.25.2.2  martin void
   1360  1.25.2.2  martin usbnet_attach(struct usbnet *un,
   1361  1.25.2.2  martin 	      const char *detname)	/* detach cv name */
   1362  1.25.2.2  martin {
   1363  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1364  1.25.2.2  martin 
   1365  1.25.2.2  martin 	/* Required inputs.  */
   1366  1.25.2.2  martin 	KASSERT(un->un_ops->uno_tx_prepare);
   1367  1.25.2.2  martin 	KASSERT(un->un_ops->uno_rx_loop);
   1368  1.25.2.2  martin 	KASSERT(un->un_ops->uno_init);
   1369  1.25.2.2  martin 	KASSERT(un->un_rx_bufsz);
   1370  1.25.2.2  martin 	KASSERT(un->un_tx_bufsz);
   1371  1.25.2.2  martin 	KASSERT(un->un_rx_list_cnt);
   1372  1.25.2.2  martin 	KASSERT(un->un_tx_list_cnt);
   1373  1.25.2.2  martin 
   1374  1.25.2.2  martin 	/* Unfortunate fact.  */
   1375  1.25.2.2  martin 	KASSERT(un == device_private(un->un_dev));
   1376  1.25.2.2  martin 
   1377  1.25.2.2  martin 	un->un_pri = kmem_zalloc(sizeof(*un->un_pri), KM_SLEEP);
   1378  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1379  1.25.2.2  martin 
   1380  1.25.2.2  martin 	usb_init_task(&unp->unp_ticktask, usbnet_tick_task, un, USB_TASKQ_MPSAFE);
   1381  1.25.2.2  martin 	callout_init(&unp->unp_stat_ch, CALLOUT_MPSAFE);
   1382  1.25.2.2  martin 	callout_setfunc(&unp->unp_stat_ch, usbnet_tick, un);
   1383  1.25.2.2  martin 
   1384  1.25.2.2  martin 	mutex_init(&unp->unp_miilock, MUTEX_DEFAULT, IPL_NONE);
   1385  1.25.2.2  martin 	mutex_init(&unp->unp_txlock, MUTEX_DEFAULT, IPL_SOFTUSB);
   1386  1.25.2.2  martin 	mutex_init(&unp->unp_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB);
   1387  1.25.2.2  martin 	mutex_init(&unp->unp_lock, MUTEX_DEFAULT, IPL_NONE);
   1388  1.25.2.2  martin 	cv_init(&unp->unp_detachcv, detname);
   1389  1.25.2.2  martin 
   1390  1.25.2.2  martin 	rnd_attach_source(&unp->unp_rndsrc, device_xname(un->un_dev),
   1391  1.25.2.2  martin 	    RND_TYPE_NET, RND_FLAG_DEFAULT);
   1392  1.25.2.2  martin 
   1393  1.25.2.2  martin 	usbnet_rx_list_alloc(un);
   1394  1.25.2.2  martin 	usbnet_tx_list_alloc(un);
   1395  1.25.2.2  martin 
   1396  1.25.2.2  martin 	unp->unp_number = atomic_inc_uint_nv(&usbnet_number);
   1397  1.25.2.2  martin 
   1398  1.25.2.2  martin 	unp->unp_attached = true;
   1399  1.25.2.2  martin }
   1400  1.25.2.2  martin 
   1401  1.25.2.2  martin static void
   1402  1.25.2.2  martin usbnet_attach_mii(struct usbnet *un, const struct usbnet_mii *unm)
   1403  1.25.2.2  martin {
   1404  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1405  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1406  1.25.2.2  martin 	struct mii_data * const mii = &unp->unp_mii;
   1407  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
   1408  1.25.2.2  martin 
   1409  1.25.2.2  martin 	KASSERT(un->un_ops->uno_read_reg);
   1410  1.25.2.2  martin 	KASSERT(un->un_ops->uno_write_reg);
   1411  1.25.2.2  martin 	KASSERT(un->un_ops->uno_statchg);
   1412  1.25.2.2  martin 
   1413  1.25.2.2  martin 	mii->mii_ifp = ifp;
   1414  1.25.2.2  martin 	mii->mii_readreg = usbnet_mii_readreg;
   1415  1.25.2.2  martin 	mii->mii_writereg = usbnet_mii_writereg;
   1416  1.25.2.2  martin 	mii->mii_statchg = usbnet_mii_statchg;
   1417  1.25.2.2  martin 	mii->mii_flags = MIIF_AUTOTSLEEP;
   1418  1.25.2.2  martin 
   1419  1.25.2.2  martin 	usbnet_ec(un)->ec_mii = mii;
   1420  1.25.2.2  martin 	ifmedia_init(&mii->mii_media, 0, usbnet_media_upd, ether_mediastatus);
   1421  1.25.2.2  martin 	mii_attach(un->un_dev, mii, unm->un_mii_capmask, unm->un_mii_phyloc,
   1422  1.25.2.2  martin 		   unm->un_mii_offset, unm->un_mii_flags);
   1423  1.25.2.2  martin 
   1424  1.25.2.2  martin 	if (LIST_FIRST(&mii->mii_phys) == NULL) {
   1425  1.25.2.2  martin 		ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL);
   1426  1.25.2.2  martin 		ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE);
   1427  1.25.2.2  martin 	} else
   1428  1.25.2.2  martin 		ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO);
   1429  1.25.2.2  martin }
   1430  1.25.2.2  martin 
   1431  1.25.2.2  martin void
   1432  1.25.2.2  martin usbnet_attach_ifp(struct usbnet *un,
   1433  1.25.2.2  martin 		  unsigned if_flags,		/* additional if_flags */
   1434  1.25.2.2  martin 		  unsigned if_extflags,		/* additional if_extflags */
   1435  1.25.2.2  martin 		  const struct usbnet_mii *unm)	/* additional mii_attach flags */
   1436  1.25.2.2  martin {
   1437  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1438  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1439  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
   1440  1.25.2.2  martin 
   1441  1.25.2.2  martin 	KASSERT(unp->unp_attached);
   1442  1.25.2.2  martin 
   1443  1.25.2.2  martin 	strlcpy(ifp->if_xname, device_xname(un->un_dev), IFNAMSIZ);
   1444  1.25.2.2  martin 	ifp->if_flags = if_flags;
   1445  1.25.2.2  martin 	ifp->if_extflags = IFEF_MPSAFE | if_extflags;
   1446  1.25.2.2  martin 	ifp->if_ioctl = usbnet_ioctl;
   1447  1.25.2.2  martin 	ifp->if_start = usbnet_start;
   1448  1.25.2.2  martin 	ifp->if_init = usbnet_init;
   1449  1.25.2.2  martin 	ifp->if_stop = usbnet_stop_ifp;
   1450  1.25.2.2  martin 
   1451  1.25.2.2  martin 	if (unm)
   1452  1.25.2.2  martin 		usbnet_attach_mii(un, unm);
   1453  1.25.2.2  martin 	else
   1454  1.25.2.2  martin 		unp->unp_link = true;
   1455  1.25.2.2  martin 
   1456  1.25.2.2  martin 	/* Attach the interface. */
   1457  1.25.2.2  martin 	int rv = if_initialize(ifp);
   1458  1.25.2.2  martin 	if (rv != 0) {
   1459  1.25.2.3  martin 		aprint_error_dev(un->un_dev, "if_initialize failed: %d\n", rv);
   1460  1.25.2.2  martin 		return;
   1461  1.25.2.2  martin 	}
   1462  1.25.2.2  martin 	if (ifp->_if_input == NULL)
   1463  1.25.2.2  martin 		ifp->if_percpuq = if_percpuq_create(ifp);
   1464  1.25.2.2  martin 	if_register(ifp);
   1465  1.25.2.2  martin 
   1466  1.25.2.2  martin 	/*
   1467  1.25.2.2  martin 	 * If ethernet address is all zero, skip ether_ifattach() and
   1468  1.25.2.2  martin 	 * instead attach bpf here..
   1469  1.25.2.2  martin 	 */
   1470  1.25.2.2  martin 	if (!usbnet_empty_eaddr(un)) {
   1471  1.25.2.2  martin 		ether_set_ifflags_cb(&unp->unp_ec, usbnet_ifflags_cb);
   1472  1.25.2.2  martin 		aprint_normal_dev(un->un_dev, "Ethernet address %s\n",
   1473  1.25.2.2  martin 		    ether_sprintf(un->un_eaddr));
   1474  1.25.2.2  martin 		ether_ifattach(ifp, un->un_eaddr);
   1475  1.25.2.2  martin 	} else {
   1476  1.25.2.2  martin 		if_alloc_sadl(ifp);
   1477  1.25.2.2  martin 		bpf_attach(ifp, DLT_RAW, 0);
   1478  1.25.2.2  martin 	}
   1479  1.25.2.2  martin 
   1480  1.25.2.2  martin 	/* Now ready, and attached. */
   1481  1.25.2.2  martin 	IFQ_SET_READY(&ifp->if_snd);
   1482  1.25.2.2  martin 	ifp->if_softc = un;
   1483  1.25.2.2  martin 
   1484  1.25.2.2  martin 	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, un->un_udev, un->un_dev);
   1485  1.25.2.2  martin 
   1486  1.25.2.2  martin 	if (!pmf_device_register(un->un_dev, NULL, NULL))
   1487  1.25.2.2  martin 		aprint_error_dev(un->un_dev, "couldn't establish power handler\n");
   1488  1.25.2.2  martin }
   1489  1.25.2.2  martin 
   1490  1.25.2.2  martin int
   1491  1.25.2.2  martin usbnet_detach(device_t self, int flags)
   1492  1.25.2.2  martin {
   1493  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1494  1.25.2.2  martin 	struct usbnet * const un = device_private(self);
   1495  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1496  1.25.2.2  martin 
   1497  1.25.2.2  martin 	/* Detached before attached finished, so just bail out. */
   1498  1.25.2.2  martin 	if (unp == NULL || !unp->unp_attached)
   1499  1.25.2.2  martin 		return 0;
   1500  1.25.2.2  martin 
   1501  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
   1502  1.25.2.2  martin 	struct mii_data * const mii = usbnet_mii(un);
   1503  1.25.2.2  martin 
   1504  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
   1505  1.25.2.2  martin 	unp->unp_dying = true;
   1506  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
   1507  1.25.2.2  martin 
   1508  1.25.2.2  martin 	if (ifp->if_flags & IFF_RUNNING) {
   1509  1.25.2.2  martin 		IFNET_LOCK(ifp);
   1510  1.25.2.2  martin 		usbnet_stop_ifp(ifp, 1);
   1511  1.25.2.2  martin 		IFNET_UNLOCK(ifp);
   1512  1.25.2.2  martin 	}
   1513  1.25.2.2  martin 
   1514  1.25.2.3  martin 	callout_halt(&unp->unp_stat_ch, NULL);
   1515  1.25.2.3  martin 	usb_rem_task_wait(un->un_udev, &unp->unp_ticktask, USB_TASKQ_DRIVER,
   1516  1.25.2.3  martin 	    NULL);
   1517  1.25.2.3  martin 
   1518  1.25.2.2  martin 	mutex_enter(&unp->unp_lock);
   1519  1.25.2.2  martin 	unp->unp_refcnt--;
   1520  1.25.2.2  martin 	while (unp->unp_refcnt > 0) {
   1521  1.25.2.2  martin 		/* Wait for processes to go away */
   1522  1.25.2.2  martin 		cv_wait(&unp->unp_detachcv, &unp->unp_lock);
   1523  1.25.2.2  martin 	}
   1524  1.25.2.2  martin 	mutex_exit(&unp->unp_lock);
   1525  1.25.2.2  martin 
   1526  1.25.2.2  martin 	usbnet_rx_list_free(un);
   1527  1.25.2.2  martin 	usbnet_tx_list_free(un);
   1528  1.25.2.2  martin 
   1529  1.25.2.2  martin 	callout_destroy(&unp->unp_stat_ch);
   1530  1.25.2.2  martin 	rnd_detach_source(&unp->unp_rndsrc);
   1531  1.25.2.2  martin 
   1532  1.25.2.2  martin 	if (mii) {
   1533  1.25.2.2  martin 		mii_detach(mii, MII_PHY_ANY, MII_OFFSET_ANY);
   1534  1.25.2.2  martin 		ifmedia_delete_instance(&mii->mii_media, IFM_INST_ANY);
   1535  1.25.2.3  martin 		usbnet_ec(un)->ec_mii = NULL;
   1536  1.25.2.2  martin 	}
   1537  1.25.2.2  martin 	if (ifp->if_softc) {
   1538  1.25.2.2  martin 		if (!usbnet_empty_eaddr(un))
   1539  1.25.2.2  martin 			ether_ifdetach(ifp);
   1540  1.25.2.2  martin 		else
   1541  1.25.2.2  martin 			bpf_detach(ifp);
   1542  1.25.2.2  martin 		if_detach(ifp);
   1543  1.25.2.2  martin 	}
   1544  1.25.2.2  martin 
   1545  1.25.2.2  martin 	cv_destroy(&unp->unp_detachcv);
   1546  1.25.2.2  martin 	mutex_destroy(&unp->unp_lock);
   1547  1.25.2.2  martin 	mutex_destroy(&unp->unp_rxlock);
   1548  1.25.2.2  martin 	mutex_destroy(&unp->unp_txlock);
   1549  1.25.2.2  martin 	mutex_destroy(&unp->unp_miilock);
   1550  1.25.2.2  martin 
   1551  1.25.2.2  martin 	pmf_device_deregister(un->un_dev);
   1552  1.25.2.2  martin 
   1553  1.25.2.2  martin 	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, un->un_udev, un->un_dev);
   1554  1.25.2.2  martin 
   1555  1.25.2.2  martin 	kmem_free(unp, sizeof(*unp));
   1556  1.25.2.3  martin 	un->un_pri = NULL;
   1557  1.25.2.2  martin 
   1558  1.25.2.2  martin 	return 0;
   1559  1.25.2.2  martin }
   1560  1.25.2.2  martin 
   1561  1.25.2.2  martin int
   1562  1.25.2.2  martin usbnet_activate(device_t self, devact_t act)
   1563  1.25.2.2  martin {
   1564  1.25.2.2  martin 	USBNETHIST_FUNC(); USBNETHIST_CALLED();
   1565  1.25.2.2  martin 	struct usbnet * const un = device_private(self);
   1566  1.25.2.2  martin 	struct usbnet_private * const unp = un->un_pri;
   1567  1.25.2.2  martin 	struct ifnet * const ifp = usbnet_ifp(un);
   1568  1.25.2.2  martin 
   1569  1.25.2.2  martin 	switch (act) {
   1570  1.25.2.2  martin 	case DVACT_DEACTIVATE:
   1571  1.25.2.2  martin 		if_deactivate(ifp);
   1572  1.25.2.2  martin 
   1573  1.25.2.2  martin 		mutex_enter(&unp->unp_lock);
   1574  1.25.2.2  martin 		unp->unp_dying = true;
   1575  1.25.2.2  martin 		mutex_exit(&unp->unp_lock);
   1576  1.25.2.2  martin 
   1577  1.25.2.2  martin 		mutex_enter(&unp->unp_rxlock);
   1578  1.25.2.2  martin 		mutex_enter(&unp->unp_txlock);
   1579  1.25.2.2  martin 		unp->unp_stopping = true;
   1580  1.25.2.2  martin 		mutex_exit(&unp->unp_txlock);
   1581  1.25.2.2  martin 		mutex_exit(&unp->unp_rxlock);
   1582  1.25.2.2  martin 
   1583  1.25.2.2  martin 		return 0;
   1584  1.25.2.2  martin 	default:
   1585  1.25.2.2  martin 		return EOPNOTSUPP;
   1586  1.25.2.2  martin 	}
   1587  1.25.2.2  martin }
   1588  1.25.2.2  martin 
   1589  1.25.2.2  martin MODULE(MODULE_CLASS_MISC, usbnet, NULL);
   1590  1.25.2.2  martin 
   1591  1.25.2.2  martin static int
   1592  1.25.2.2  martin usbnet_modcmd(modcmd_t cmd, void *arg)
   1593  1.25.2.2  martin {
   1594  1.25.2.2  martin 	switch (cmd) {
   1595  1.25.2.2  martin 	case MODULE_CMD_INIT:
   1596  1.25.2.2  martin 		return 0;
   1597  1.25.2.2  martin 	case MODULE_CMD_FINI:
   1598  1.25.2.2  martin 		return 0;
   1599  1.25.2.2  martin 	case MODULE_CMD_STAT:
   1600  1.25.2.2  martin 	case MODULE_CMD_AUTOUNLOAD:
   1601  1.25.2.2  martin 	default:
   1602  1.25.2.2  martin 		return ENOTTY;
   1603  1.25.2.2  martin 	}
   1604  1.25.2.2  martin }
   1605