[src/trunk]: src/sys/dev/usb couple of minor API updates:

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/305642799be8
branches:  trunk
changeset: 462923:305642799be8
user:      mrg <mrg%NetBSD.org@localhost>
date:      Wed Jul 31 23:47:16 2019 +0000

description:
couple of minor API updates:
- change the read/write register callbacks to have the same phy/reg
  order as the MII code.
- add "mii_flags" param to usbnet_attach_ifp().  axe(4) wants it.

also:
- add usbnet debug code, sysctl node support
- remove commented DPRINTF()s accidentally left in place
- add usbnet_softc()
- reorder some attach code to be consistent
- re-add USBD_FORCE_SHORT_XFER for axen rx chain

ride 9.99.2 bump.

diffstat:

 sys/dev/usb/if_axen.c |  37 ++++++++++++----------------
 sys/dev/usb/if_cdce.c |   6 ++--
 sys/dev/usb/usbnet.c  |  66 +++++++++++++++++++++++++++++++++++++-------------
 sys/dev/usb/usbnet.h  |   8 +++--
 4 files changed, 73 insertions(+), 44 deletions(-)

diffs (truncated from 382 to 300 lines):

diff -r 29ed169cc6f7 -r 305642799be8 sys/dev/usb/if_axen.c
--- a/sys/dev/usb/if_axen.c     Wed Jul 31 21:50:25 2019 +0000
+++ b/sys/dev/usb/if_axen.c     Wed Jul 31 23:47:16 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_axen.c,v 1.51 2019/07/31 09:13:16 mrg Exp $ */
+/*     $NetBSD: if_axen.c,v 1.52 2019/07/31 23:47:16 mrg Exp $ */
 /*     $OpenBSD: if_axen.c,v 1.3 2013/10/21 10:10:22 yuo Exp $ */
 
 /*
@@ -23,7 +23,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_axen.c,v 1.51 2019/07/31 09:13:16 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_axen.c,v 1.52 2019/07/31 23:47:16 mrg Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -127,9 +127,9 @@
 }
 
 static usbd_status
-axen_mii_read_reg(struct usbnet *un, int reg, int phy, uint16_t *val)
+axen_mii_read_reg(struct usbnet *un, int phy, int reg, uint16_t *val)
 {
-       struct axen_softc * const sc = un->un_sc;
+       struct axen_softc * const sc = usbnet_softc(un);
        uint16_t data;
        usbd_status err = axen_cmd(sc, AXEN_CMD_MII_READ_REG, reg, phy, &data);
 
@@ -144,9 +144,9 @@
 }
 
 static usbd_status
-axen_mii_write_reg(struct usbnet *un, int reg, int phy, uint16_t val)
+axen_mii_write_reg(struct usbnet *un, int phy, int reg, uint16_t val)
 {
-       struct axen_softc * const sc = un->un_sc;
+       struct axen_softc * const sc = usbnet_softc(un);
        uint16_t uval = htole16(val);
 
        return axen_cmd(sc, AXEN_CMD_MII_WRITE_REG, reg, phy, &uval);
@@ -156,7 +156,7 @@
 axen_miibus_statchg(struct ifnet *ifp)
 {
        struct usbnet * const un = ifp->if_softc;
-       struct axen_softc * const sc = un->un_sc;
+       struct axen_softc * const sc = usbnet_softc(un);
        struct mii_data * const mii = usbnet_mii(un);
        int err;
        uint16_t val;
@@ -215,7 +215,7 @@
 static void
 axen_setiff_locked(struct usbnet *un)
 {
-       struct axen_softc * const sc = un->un_sc;
+       struct axen_softc * const sc = usbnet_softc(un);
        struct ifnet * const ifp = usbnet_ifp(un);
        struct ethercom *ec = &un->un_ec;
        struct ether_multi *enm;
@@ -519,7 +519,7 @@
 static void
 axen_setoe_locked(struct usbnet *un)
 {
-       struct axen_softc * const sc = un->un_sc;
+       struct axen_softc * const sc = usbnet_softc(un);
        struct ifnet * const ifp = usbnet_ifp(un);
        uint64_t enabled = ifp->if_capenable;
        uint8_t val;
@@ -612,6 +612,9 @@
 
        aprint_naive("\n");
        aprint_normal("\n");
+       devinfop = usbd_devinfo_alloc(dev, 0);
+       aprint_normal_dev(self, "%s\n", devinfop);
+       usbd_devinfo_free(devinfop);
 
        un->un_dev = self;
        un->un_udev = dev;
@@ -626,10 +629,6 @@
        un->un_init_cb = axen_init;
        un->un_rx_xfer_flags = USBD_SHORT_XFER_OK;
        un->un_tx_xfer_flags = USBD_FORCE_SHORT_XFER;
- 
-       devinfop = usbd_devinfo_alloc(dev, 0);
-       aprint_normal_dev(self, "%s\n", devinfop);
-       usbd_devinfo_free(devinfop);
 
        err = usbd_set_config_no(dev, AXEN_CONFIG_NO, 1);
        if (err) {
@@ -724,7 +723,7 @@
            IFCAP_CSUM_UDPv6_Rx | IFCAP_CSUM_UDPv6_Tx;
 
        usbnet_attach_ifp(un, true, IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST,
-           0);
+           0, 0);
 }
 
 static int
@@ -916,7 +915,7 @@
 axen_init_locked(struct ifnet *ifp)
 {
        struct usbnet * const un = ifp->if_softc;
-       struct axen_softc * const sc = un->un_sc;
+       struct axen_softc * const sc = usbnet_softc(un);
        uint16_t rxmode;
        uint16_t wval;
        uint8_t bval;
@@ -953,7 +952,7 @@
 
        usbnet_unlock_mii_un_locked(un);
 
-       return usbnet_init_rx_tx(un, 0, 0);
+       return usbnet_init_rx_tx(un, 0, USBD_FORCE_SHORT_XFER);
 }
 
 static int
@@ -968,15 +967,11 @@
        return ret;
 }
 
-/*
- * Stop the adapter and free any mbufs allocated to the
- * RX and TX lists.
- */
 static void
 axen_stop_cb(struct ifnet *ifp, int disable)
 {
        struct usbnet * const un = ifp->if_softc;
-       struct axen_softc * const sc = un->un_sc;
+       struct axen_softc * const sc = usbnet_softc(un);
        uint16_t rxmode, wval;
 
        axen_reset(sc);
diff -r 29ed169cc6f7 -r 305642799be8 sys/dev/usb/if_cdce.c
--- a/sys/dev/usb/if_cdce.c     Wed Jul 31 21:50:25 2019 +0000
+++ b/sys/dev/usb/if_cdce.c     Wed Jul 31 23:47:16 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_cdce.c,v 1.54 2019/07/31 09:13:16 mrg Exp $ */
+/*     $NetBSD: if_cdce.c,v 1.55 2019/07/31 23:47:16 mrg Exp $ */
 
 /*
  * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul%windriver.com@localhost>
@@ -40,7 +40,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_cdce.c,v 1.54 2019/07/31 09:13:16 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_cdce.c,v 1.55 2019/07/31 23:47:16 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -254,7 +254,7 @@
 
        usbnet_attach(un, "cdcedet", CDCE_RX_LIST_CNT, CDCE_TX_LIST_CNT);
        usbnet_attach_ifp(un, false, IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST,
-            0);
+            0, 0);
 }
 
 static int
diff -r 29ed169cc6f7 -r 305642799be8 sys/dev/usb/usbnet.c
--- a/sys/dev/usb/usbnet.c      Wed Jul 31 21:50:25 2019 +0000
+++ b/sys/dev/usb/usbnet.c      Wed Jul 31 23:47:16 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usbnet.c,v 1.1 2019/07/31 09:13:16 mrg Exp $   */
+/*     $NetBSD: usbnet.c,v 1.2 2019/07/31 23:47:16 mrg Exp $   */
 
 /*
  * Copyright (c) 2019 Matthew R. Green
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.1 2019/07/31 09:13:16 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.2 2019/07/31 23:47:16 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -44,8 +44,46 @@
 
 static int usbnet_modcmd(modcmd_t, void *);
 
-#define DPRINTF(fmt, ...) \
-        printf("%s:%d: " fmt "\n", __func__, __LINE__, ## __VA_ARGS__)
+#ifdef USB_DEBUG
+#ifndef USBNET_DEBUG
+#define usbnetdebug 0
+#else
+static int usbnetdebug = 20;
+
+SYSCTL_SETUP(sysctl_hw_usbnet_setup, "sysctl hw.usbnet setup")
+{
+       int err;
+       const struct sysctlnode *rnode;
+       const struct sysctlnode *cnode;
+
+       err = sysctl_createv(clog, 0, NULL, &rnode,
+           CTLFLAG_PERMANENT, CTLTYPE_NODE, "usbnet",
+           SYSCTL_DESCR("usbnet global controls"),
+           NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL);
+
+       if (err)
+               goto fail;
+
+       /* control debugging printfs */
+       err = sysctl_createv(clog, 0, &rnode, &cnode,
+           CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT,
+           "debug", SYSCTL_DESCR("Enable debugging output"),
+           NULL, 0, &usbnetdebug, sizeof(usbnetdebug), CTL_CREATE, CTL_EOL);
+       if (err)
+               goto fail;
+
+       return;
+fail:
+       aprint_error("%s: sysctl_createv failed (err = %d)\n", __func__, err);
+}
+
+#endif /* USBNET_DEBUG */
+#endif /* USB_DEBUG */
+
+#define DPRINTF(FMT,A,B,C,D)   USBHIST_LOGN(usbnetdebug,1,FMT,A,B,C,D)
+#define DPRINTFN(N,FMT,A,B,C,D)        USBHIST_LOGN(usbnetdebug,N,FMT,A,B,C,D)
+#define USBNETHIST_FUNC()      USBHIST_FUNC()
+#define USBNETHIST_CALLED(name)        USBHIST_CALLED(usbnetdebug)
 
 /* Interrupt handling. */
 
@@ -83,7 +121,6 @@
        struct ifnet *ifp = &un->un_ec.ec_if;
        struct mbuf *m;
 
-//DPRINTF("enter");
        KASSERT(mutex_owned(&un->un_rxlock));
 
        m = usbnet_newbuf();
@@ -113,7 +150,6 @@
        struct ifnet *ifp = &un->un_ec.ec_if;
        uint32_t total_len;
 
-//DPRINTF("enter");
        mutex_enter(&un->un_rxlock);
 
        if (un->un_dying || un->un_stopping ||
@@ -166,7 +202,6 @@
        struct usbnet_cdata *cd = &un->un_cdata;
        struct ifnet * const ifp = usbnet_ifp(un);
 
-//DPRINTF("enter");
        mutex_enter(&un->un_txlock);
        if (un->un_stopping || un->un_dying) {
                mutex_exit(&un->un_txlock);
@@ -213,7 +248,6 @@
        unsigned length;
        int idx;
 
-//DPRINTF("enter");
        KASSERT(mutex_owned(&un->un_txlock));
        KASSERT(cd->uncd_tx_cnt <= cd->uncd_tx_list_cnt);
 
@@ -221,7 +255,6 @@
                return;
 
        idx = cd->uncd_tx_prod;
-//DPRINTF("idx %d", idx);
        while (cd->uncd_tx_cnt < cd->uncd_tx_list_cnt) {
                IFQ_POLL(&ifp->if_snd, m);
                if (m == NULL)
@@ -262,7 +295,6 @@
                idx = (idx + 1) % cd->uncd_tx_list_cnt;
                cd->uncd_tx_cnt++;
        }
-//DPRINTF("idx %d", idx);
        cd->uncd_tx_prod = idx;
 
        /*
@@ -276,7 +308,6 @@
 {
        struct usbnet * const un = ifp->if_softc;
 
-//DPRINTF("enter");
        mutex_enter(&un->un_txlock);
        if (!un->un_stopping)
                usbnet_start_locked(ifp);
@@ -596,7 +627,7 @@
        mutex_exit(&un->un_lock);
 
        usbnet_lock_mii(un);
-       err = (*un->un_read_reg_cb)(un, reg, phy, val);
+       err = (*un->un_read_reg_cb)(un, phy, reg, val);
        usbnet_unlock_mii(un);
 
        if (err) {
@@ -621,7 +652,7 @@
        mutex_exit(&un->un_lock);
 
        usbnet_lock_mii(un);
-       err = (*un->un_write_reg_cb)(un, reg, phy, val);
+       err = (*un->un_write_reg_cb)(un, phy, reg, val);
        usbnet_unlock_mii(un);