Author: bz
Date: Thu Apr 17 12:33:26 2014
New Revision: 264601
URL: http://svnweb.freebsd.org/changeset/base/264601
Log:
Add the initial version of if_nf10bmac(4), a driver to support an
NetFPGA-10G Embedded CPU Ethernet Core.
The current version operates on a simple PIO based interface connected
to a NetFPGA-10G port.
To avoid confusion: this driver operates on a CPU running on the FPGA,
e.g. BERI/mips, and is not suited for the PCI host interface.
MFC after: 1 week
Relnotes: yes
Sponsored by: DARPA/AFRL
Added:
head/share/man/man4/netfpga10g_nf10bmac.4 (contents, props changed)
head/sys/dev/netfpga10g/
head/sys/dev/netfpga10g/nf10bmac/
head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac.c (contents, props changed)
head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c (contents, props changed)
head/sys/dev/netfpga10g/nf10bmac/if_nf10bmacreg.h (contents, props changed)
head/sys/modules/netfpga10g/
head/sys/modules/netfpga10g/Makefile (contents, props changed)
head/sys/modules/netfpga10g/nf10bmac/
head/sys/modules/netfpga10g/nf10bmac/Makefile (contents, props changed)
Modified:
head/share/man/man4/Makefile
head/sys/boot/fdt/dts/mips/beri-netfpga.dts
head/sys/mips/beri/files.beri
head/sys/mips/conf/BERI_NETFPGA_MDROOT
head/sys/modules/Makefile
Modified: head/share/man/man4/Makefile
==============================================================================
--- head/share/man/man4/Makefile Thu Apr 17 12:22:08 2014
(r264600)
+++ head/share/man/man4/Makefile Thu Apr 17 12:33:26 2014
(r264601)
@@ -280,6 +280,7 @@ MAN= aac.4 \
ncv.4 \
${_ndis.4} \
net80211.4 \
+ netfpga10g_nf10bmac.4 \
netgraph.4 \
netintro.4 \
netmap.4 \
@@ -675,6 +676,7 @@ MLINKS+=mwl.4 if_mwl.4
MLINKS+=mxge.4 if_mxge.4
MLINKS+=my.4 if_my.4
MLINKS+=${_ndis.4} ${_if_ndis.4}
+MLINKS+=netfpga10g_nf10bmac.4 if_nf10bmac.4
MLINKS+=netintro.4 net.4 \
netintro.4 networking.4
MLINKS+=${_nfe.4} ${_if_nfe.4}
Added: head/share/man/man4/netfpga10g_nf10bmac.4
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/share/man/man4/netfpga10g_nf10bmac.4 Thu Apr 17 12:33:26 2014
(r264601)
@@ -0,0 +1,70 @@
+.\"-
+.\" Copyright (c) 2014 Bjoern A. Zeeb
+.\" All rights reserved.
+.\"
+.\" This software was developed by SRI International and the University of
+.\" Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249
+.\" ("MRC2"), as part of the DARPA MRC research programme.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd April 17, 2014
+.Dt NETFPGA10G_NF10BMAC 4
+.Os
+.Sh NAME
+.Nm netfpga10g_nf10bmac
+.Nd driver for the NetFPGA-10G Embedded CPU Ethernet Core
+.Sh SYNOPSIS
+.Cd "device netfpga10g_nf10bmac"
+.Sh DESCRIPTION
+The
+.Nm
+device driver provides support for the NetFPGA-10G Embedded CPU Ethernet
+Core.
+.Sh HARDWARE
+The current version of the
+.Nm
+driver works with one PIO mode interface of the
+NetFPGA-10G Embedded CPU Ethernet Core version 1.00a.
+.Sh SEE ALSO
+.Xr netintro 4 ,
+.Xr ifconfig 8
+.Rs
+.%T NetFPGA-10G Wiki
+.%U https://github.com/NetFPGA/NetFPGA-public/wiki
+.Re
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 11.0 .
+.Sh AUTHORS
+This software and this manual page were
+developed by SRI International and the University of Cambridge Computer
+Laboratory under DARPA/AFRL contract
+.Pq FA8750-11-C-0249
+.Pq Do MRC2 Dc ,
+as part of the DARPA MRC research programme.
+The device driver was written by
+.An Bjoern A. Zeeb .
Modified: head/sys/boot/fdt/dts/mips/beri-netfpga.dts
==============================================================================
--- head/sys/boot/fdt/dts/mips/beri-netfpga.dts Thu Apr 17 12:22:08 2014
(r264600)
+++ head/sys/boot/fdt/dts/mips/beri-netfpga.dts Thu Apr 17 12:33:26 2014
(r264601)
@@ -1,7 +1,7 @@
/*-
* Copyright (c) 2012-2013 Robert N. M. Watson
* Copyright (c) 2013 SRI International
- * Copyright (c) 2013 Bjoern A. Zeeb
+ * Copyright (c) 2013-2014 Bjoern A. Zeeb
* All rights reserved.
*
* This software was developed by SRI International and the University of
@@ -132,6 +132,17 @@
interrupt-parent = <&beripic>;
};
*/
+
+ ethernet@7f005000 {
+ compatible = "netfpag10g,nf10bmac";
+ // TX, RX, LOOP
+ reg = <0x7f005010 0xc
+ 0x7f005020 0xc
+ 0x7f005030 0x4>;
+ // RX
+ #interrupts = <1>;
+ #interrupt-parent = <&beripic>;
+ };
};
aliases {
Added: head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac.c Thu Apr 17 12:33:26
2014 (r264601)
@@ -0,0 +1,816 @@
+/*-
+ * Copyright (c) 2012-2014 Bjoern A. Zeeb
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249
+ * ("MRC2"), as part of the DARPA MRC research programme.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This driver is modelled after atse(4). We need to seriously reduce the
+ * per-driver code we have to write^wcopy & paste.
+ *
+ * TODO:
+ * - figure out on the HW side why some data is LE and some is BE.
+ * - general set of improvements possible (e.g., reduce times of copying,
+ * do on-the-copy checksum calculations)
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "opt_device_polling.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/endian.h>
+#include <sys/lock.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/types.h>
+
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#include <net/if_types.h>
+#include <net/if_vlan_var.h>
+
+#include <net/bpf.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <sys/rman.h>
+
+#include "if_nf10bmacreg.h"
+
+#ifndef NF10BMAC_MAX_PKTS
+/*
+ * We have a 4k buffer in HW, so do not try to send more than 3 packets.
+ * At the time of writing HW is orders of magnitude faster than we can
+ * enqueue so it would not matter but need an escape.
+ */
+#define NF10BMAC_MAX_PKTS 3
+#endif
+
+#ifndef NF10BMAC_WATCHDOG_TIME
+#define NF10BMAC_WATCHDOG_TIME 5 /* seconds */
+#endif
+
+#ifdef DEVICE_POLLING
+static poll_handler_t nf10bmac_poll;
+#endif
+
+#define NF10BMAC_LOCK(_sc) mtx_lock(&(_sc)->nf10bmac_mtx)
+#define NF10BMAC_UNLOCK(_sc) mtx_unlock(&(_sc)->nf10bmac_mtx)
+#define NF10BMAC_LOCK_ASSERT(_sc) \
+ mtx_assert(&(_sc)->nf10bmac_mtx, MA_OWNED)
+
+#define NF10BMAC_TX_LEN 0x08
+#define NF10BMAC_TX_META 0x04
+#define NF10BMAC_TX_DATA 0x00
+#define NF10BMAC_RX_LEN 0x08
+#define NF10BMAC_RX_META 0x04
+#define NF10BMAC_RX_DATA 0x00
+#define NF10BMAC_CTRL0 0x00
+
+#define NF10BMAC_TUSER_MAC0 (1 << 0)
+#define NF10BMAC_TUSER_CPU0 (1 << 1)
+#define NF10BMAC_TUSER_MAC1 (1 << 2)
+#define NF10BMAC_TUSER_CPU1 (1 << 3)
+#define NF10BMAC_TUSER_MAC2 (1 << 4)
+#define NF10BMAC_TUSER_CPU2 (1 << 5)
+#define NF10BMAC_TUSER_MAC3 (1 << 6)
+#define NF10BMAC_TUSER_CPU3 (1 << 7)
+
+#define NF10BMAC_DATA_DPORT_MASK 0xff000000
+#define NF10BMAC_DATA_DPORT_SHIFT 24
+#define NF10BMAC_DATA_SPORT_MASK 0x00ff0000
+#define NF10BMAC_DATA_SPORT_SHIFT 16
+#define NF10BMAC_DATA_LAST 0x00000080
+#define NF10BMAC_DATA_STRB 0x0000000f
+
+
+static inline void
+nf10bmac_write_4(struct resource *res, uint32_t reg, uint32_t val4,
+ const char *f __unused, const int l __unused)
+{
+
+ bus_write_4(res, reg, htole32(val4));
+}
+
+static inline uint32_t
+nf10bmac_read_4(struct resource *res, uint32_t reg,
+ const char *f __unused, const int l __unused)
+{
+
+ return (le32toh(bus_read_4(res, reg)));
+}
+
+static inline void
+nf10bmac_write_4_be(struct resource *res, uint32_t reg, uint32_t val4,
+ const char *f __unused, const int l __unused)
+{
+
+ bus_write_4(res, reg, htobe32(val4));
+}
+
+
+static inline uint32_t
+nf10bmac_read_4_be(struct resource *res, uint32_t reg,
+ const char *f __unused, const int l __unused)
+{
+
+ return (be32toh(bus_read_4(res, reg)));
+}
+
+#define NF10BMAC_WRITE_CTRL_4(sc, reg, val)
\
+ nf10bmac_write_4((sc)->nf10bmac_mem_res, (reg), (val), \
+ __func__, __LINE__)
+#define NF10BMAC_WRITE_4(sc, reg, val)
\
+ nf10bmac_write_4((sc)->nf10bmac_tx_mem_res, (reg), (val), \
+ __func__, __LINE__)
+#define NF10BMAC_READ_4(sc, reg)
\
+ nf10bmac_read_4((sc)->nf10bmac_rx_mem_res, (reg), \
+ __func__, __LINE__)
+#define NF10BMAC_WRITE_4_BE(sc, reg, val)
\
+ nf10bmac_write_4_be((sc)->nf10bmac_tx_mem_res, (reg), (val), \
+ __func__, __LINE__)
+#define NF10BMAC_READ_4_BE(sc, reg)
\
+ nf10bmac_read_4_be((sc)->nf10bmac_rx_mem_res, (reg), \
+ __func__, __LINE__)
+
+#ifdef ENABLE_WATCHDOG
+static void nf10bmac_tick(void *);
+#endif
+static int nf10bmac_detach(device_t);
+
+devclass_t nf10bmac_devclass;
+
+
+static int
+nf10bmac_tx_locked(struct nf10bmac_softc *sc, struct mbuf *m)
+{
+ int32_t len, l, ml;
+ uint32_t m4, val4;
+
+ NF10BMAC_LOCK_ASSERT(sc);
+
+ KASSERT(m != NULL, ("%s: m is null: sc=%p", __func__, sc));
+ KASSERT(m->m_flags & M_PKTHDR, ("%s: not a pkthdr: m=%p", __func__, m));
+ /*
+ * Copy to buffer to minimize our pain as we can only store
+ * double words which, after the first mbuf gets out of alignment
+ * quite quickly.
+ */
+ m_copydata(m, 0, m->m_pkthdr.len, sc->nf10bmac_tx_buf);
+ len = m->m_pkthdr.len;
+
+ /* Write the length at start of packet. */
+ NF10BMAC_WRITE_4(sc, NF10BMAC_TX_LEN, len);
+
+ /* Write the meta data and data. */
+ ml = len / sizeof(val4);
+ len -= (ml * sizeof(val4));
+ for (l = 0; l <= ml; l++) {
+ int32_t cl;
+
+ cl = sizeof(val4);
+ m4 = (NF10BMAC_TUSER_CPU0 << NF10BMAC_DATA_SPORT_SHIFT);
+ if (l == ml || (len == 0 && l == (ml - 1))) {
+ if (l == ml && len == 0) {
+ break;
+ } else {
+ uint8_t s;
+ int sl;
+
+ if (l == (ml - 1))
+ len = 4;
+ cl = len;
+
+ for (s = 0, sl = len; sl > 0; sl--)
+ s |= (1 << (sl - 1));
+ m4 |= (s & NF10BMAC_DATA_STRB);
+ m4 |= NF10BMAC_DATA_LAST;
+ }
+ } else {
+ m4 |= NF10BMAC_DATA_STRB;
+ }
+ NF10BMAC_WRITE_4(sc, NF10BMAC_TX_META, m4);
+ bcopy(&sc->nf10bmac_tx_buf[l*sizeof(val4)], &val4, cl);
+ NF10BMAC_WRITE_4_BE(sc, NF10BMAC_TX_DATA, val4);
+ }
+
+ /* If anyone is interested give them a copy. */
+ BPF_MTAP(sc->nf10bmac_ifp, m);
+
+ m_freem(m);
+
+ return (0);
+}
+
+static void
+nf10bmac_start_locked(struct ifnet *ifp)
+{
+ struct nf10bmac_softc *sc;
+ int count, error;
+
+ sc = ifp->if_softc;
+ NF10BMAC_LOCK_ASSERT(sc);
+
+ if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
+ IFF_DRV_RUNNING || (sc->nf10bmac_flags & NF10BMAC_FLAGS_LINK) == 0)
+ return;
+
+#ifdef ENABLE_WATCHDOG
+ /*
+ * Disable the watchdog while sending, we are batching packets.
+ * Though we should never reach 5 seconds, and are holding the lock,
+ * but who knows.
+ */
+ sc->nf10bmac_watchdog_timer = 0;
+#endif
+
+ /* Send up to MAX_PKTS_PER_TX_LOOP packets. */
+ for (count = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) &&
+ count < NF10BMAC_MAX_PKTS; count++) {
+ struct mbuf *m;
+
+ IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
+ if (m == NULL)
+ break;
+ error = nf10bmac_tx_locked(sc, m);
+ if (error != 0)
+ break;
+ }
+
+#ifdef ENABLE_WATCHDOG
+done:
+ /* If the IP core walks into Nekromanteion try to bail out. */
+ /* XXX-BZ useless until we have direct FIFO fill status feedback. */
+ if (count > 0)
+ sc->nf10bmac_watchdog_timer = NF10BMAC_WATCHDOG_TIME;
+#endif
+}
+
+static void
+nf10bmac_start(struct ifnet *ifp)
+{
+ struct nf10bmac_softc *sc;
+
+ sc = ifp->if_softc;
+ NF10BMAC_LOCK(sc);
+ nf10bmac_start_locked(ifp);
+ NF10BMAC_UNLOCK(sc);
+}
+
+static void
+nf10bmac_eat_packet_munch_munch(struct nf10bmac_softc *sc)
+{
+ uint32_t m4, val4;
+
+ do {
+ m4 = NF10BMAC_READ_4_BE(sc, NF10BMAC_RX_META);
+ if ((m4 & NF10BMAC_DATA_STRB) != 0)
+ val4 = NF10BMAC_READ_4_BE(sc, NF10BMAC_RX_DATA);
+ } while ((m4 & NF10BMAC_DATA_STRB) != 0 &&
+ (m4 & NF10BMAC_DATA_LAST) == 0);
+}
+
+static int
+nf10bmac_rx_locked(struct nf10bmac_softc *sc)
+{
+ struct ifnet *ifp;
+ struct mbuf *m;
+ uint32_t m4, val4;
+ int32_t len, l;
+
+ /*
+ * General problem here in case we need to sync ourselves to the
+ * beginning of a packet. Length will only be set for the first
+ * read, and together with strb we can detect the begining (or
+ * skip to tlast).
+ */
+
+ len = NF10BMAC_READ_4(sc, NF10BMAC_RX_LEN);
+ if (len > (MCLBYTES - ETHER_ALIGN)) {
+ nf10bmac_eat_packet_munch_munch(sc);
+ return (0);
+ }
+
+ m4 = NF10BMAC_READ_4(sc, NF10BMAC_RX_META);
+ if (len == 0 && (m4 & NF10BMAC_DATA_STRB) == 0) {
+ /* No packet data available. */
+ return (0);
+ } else if (len == 0 && (m4 & NF10BMAC_DATA_STRB) != 0) {
+ /* We are in the middle of a packet. */
+ nf10bmac_eat_packet_munch_munch(sc);
+ return (0);
+ } else if ((m4 & NF10BMAC_DATA_STRB) == 0) {
+ /* Invalid length "hint". */
+ device_printf(sc->nf10bmac_dev,
+ "Unexpected length %d on zero strb\n", len);
+ return (0);
+ }
+
+ /* Assume at this point that we have data and a full packet. */
+ if ((len + ETHER_ALIGN) >= MINCLSIZE) {
+ /* Get a cluster. */
+ m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
+ if (m == NULL)
+ return (0);
+ m->m_len = m->m_pkthdr.len = MCLBYTES;
+ } else {
+ /* Hey this still fits into the mbuf+pkthdr. */
+ m = m_gethdr(M_NOWAIT, MT_DATA);
+ if (m == NULL)
+ return (0);
+ m->m_len = m->m_pkthdr.len = MHLEN;
+ }
+ /* Make sure upper layers will be aligned. */
+ m_adj(m, ETHER_ALIGN);
+
+ ifp = sc->nf10bmac_ifp;
+ l = 0;
+/*
+ while ((m4 & NF10BMAC_DATA_STRB) != 0 && l < len) {
+*/
+ while (l < len) {
+ size_t cl;
+
+ if ((m4 & NF10BMAC_DATA_LAST) == 0 &&
+ (len - l) < sizeof(val4)) {
+ /*
+ * Our length and LAST disagree. We have a valid STRB.
+ * We could continue until we fill the mbuf and just
+ * log the invlid length "hint". For now drop the
+ * packet on the floor and count the error.
+ */
+ nf10bmac_eat_packet_munch_munch(sc);
+ ifp->if_ierrors++;
+ m_freem(m);
+ return (0);
+ } else if ((len - l) <= sizeof(val4)) {
+ cl = len - l;
+ } else {
+ cl = sizeof(val4);
+ }
+
+ /* Read the first bytes of data as well. */
+ val4 = NF10BMAC_READ_4_BE(sc, NF10BMAC_RX_DATA);
+ bcopy(&val4, (uint8_t *)(m->m_data + l), cl);
+ l += cl;
+
+ if ((m4 & NF10BMAC_DATA_LAST) != 0 || l >= len)
+ break;
+ else {
+ DELAY(50);
+ m4 = NF10BMAC_READ_4(sc, NF10BMAC_RX_META);
+ }
+
+ cl = 10;
+ while ((m4 & NF10BMAC_DATA_STRB) == 0 && cl-- > 0) {
+ DELAY(10);
+ m4 = NF10BMAC_READ_4(sc, NF10BMAC_RX_META);
+ }
+ }
+ /* We should get out of this loop with tlast and tsrb. */
+ if ((m4 & NF10BMAC_DATA_LAST) == 0 || (m4 & NF10BMAC_DATA_STRB) == 0) {
+ device_printf(sc->nf10bmac_dev, "Unexpected rx loop end state: "
+ "m4=0x%08x len=%d l=%d\n", m4, len, l);
+ ifp->if_ierrors++;
+ m_freem(m);
+ return (0);
+ }
+
+ m->m_pkthdr.len = m->m_len = len;
+ m->m_pkthdr.rcvif = ifp;
+ ifp->if_ipackets++;
+
+ NF10BMAC_UNLOCK(sc);
+ (*ifp->if_input)(ifp, m);
+ NF10BMAC_LOCK(sc);
+
+ return (1);
+}
+
+
+static int
+nf10bmac_stop_locked(struct nf10bmac_softc *sc)
+{
+ struct ifnet *ifp;
+
+ NF10BMAC_LOCK_ASSERT(sc);
+
+#ifdef ENABLE_WATCHDOG
+ sc->nf10bmac_watchdog_timer = 0;
+ callout_stop(&sc->nf10bmac_tick);
+#endif
+
+ ifp = sc->nf10bmac_ifp;
+ ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
+
+ sc->nf10bmac_flags &= ~NF10BMAC_FLAGS_LINK;
+ if_link_state_change(ifp, LINK_STATE_DOWN);
+
+ return (0);
+}
+
+static int
+nf10bmac_reset(struct nf10bmac_softc *sc)
+{
+
+ /* Currently we cannot do anything. */
+ return (0);
+}
+
+static void
+nf10bmac_init_locked(struct nf10bmac_softc *sc)
+{
+ struct ifnet *ifp;
+ uint8_t *eaddr;
+
+ NF10BMAC_LOCK_ASSERT(sc);
+ ifp = sc->nf10bmac_ifp;
+
+ if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
+ return;
+
+ /*
+ * Must update the ether address if changed. Given we do not handle
+ * in nf10bmac_ioctl() but it's in the general framework, just always
+ * do it here before nf10bmac_reset().
+ */
+ eaddr = IF_LLADDR(sc->nf10bmac_ifp);
+ bcopy(eaddr, &sc->nf10bmac_eth_addr, ETHER_ADDR_LEN);
+ /* XXX-BZ we do not have any way to tell the NIC our ether address. */
+
+ /* Make things frind to halt, cleanup, ... */
+ nf10bmac_stop_locked(sc);
+ /* ... reset, ... */
+ nf10bmac_reset(sc);
+
+ /* Memory rings? DMA engine? MC filter? MII? */
+ /* Instead drain the FIFO; or at least a possible first packet.. */
+ nf10bmac_eat_packet_munch_munch(sc);
+
+ ifp->if_drv_flags |= IFF_DRV_RUNNING;
+ ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+
+ /* We have no underlying media, fake link state. */
+ sc->nf10bmac_flags = NF10BMAC_FLAGS_LINK; /* Always up. */
+ if_link_state_change(sc->nf10bmac_ifp, LINK_STATE_UP);
+
+#ifdef ENABLE_WATCHDOG
+ callout_reset(&sc->nf10bmac_tick, hz, nf10bmac_tick, sc);
+#endif
+}
+
+static void
+nf10bmac_init(void *xsc)
+{
+ struct nf10bmac_softc *sc;
+
+ sc = (struct nf10bmac_softc *)xsc;
+ NF10BMAC_LOCK(sc);
+ nf10bmac_init_locked(sc);
+ NF10BMAC_UNLOCK(sc);
+}
+
+#ifdef ENABLE_WATCHDOG
+static void
+nf10bmac_watchdog(struct nf10bmac_softc *sc)
+{
+
+ NF10BMAC_LOCK_ASSERT(sc);
+
+ if (sc->nf10bmac_watchdog_timer == 0 || --sc->nf10bmac_watchdog_timer >
0)
+ return;
+
+ device_printf(sc->nf10bmac_dev, "watchdog timeout\n");
+ sc->nf10bmac_ifp->if_oerrors++;
+
+ sc->nf10bmac_ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
+ nf10bmac_init_locked(sc);
+
+ if (!IFQ_DRV_IS_EMPTY(&sc->nf10bmac_ifp->if_snd))
+ nf10bmac_start_locked(sc->nf10bmac_ifp);
+}
+
+static void
+nf10bmac_tick(void *xsc)
+{
+ struct nf10bmac_softc *sc;
+ struct ifnet *ifp;
+
+ sc = (struct nf10bmac_softc *)xsc;
+ NF10BMAC_LOCK_ASSERT(sc);
+ ifp = sc->nf10bmac_ifp;
+
+ nf10bmac_watchdog(sc);
+ callout_reset(&sc->nf10bmac_tick, hz, nf10bmac_tick, sc);
+}
+#endif
+
+#ifdef DEVICE_POLLING
+static int
+nf10bmac_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
+{
+ struct nf10bmac_softc *sc;
+ int rx_npkts = 0;
+
+ sc = ifp->if_softc;
+ NF10BMAC_LOCK(sc);
+ if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
+ NF10BMAC_UNLOCK(sc);
+ return (rx_npkts);
+ }
+
+ while (rx_npkts < count) {
+ int c;
+
+ c = nf10bmac_rx_locked(sc);
+ rx_npkts += c;
+ if (c == 0)
+ break;
+ }
+ nf10bmac_start_locked(ifp);
+
+ if (rx_npkts > 0 || cmd == POLL_AND_CHECK_STATUS) {
+ /* We currently cannot do much. */
+ ;
+ }
+
+ NF10BMAC_UNLOCK(sc);
+ return (rx_npkts);
+}
+#else
+#error We only support polling mode
+#endif /* DEVICE_POLLING */
+
+static int
+nf10bmac_media_change(struct ifnet *ifp __unused)
+{
+
+ /* Do nothing. */
+ return (0);
+}
+
+static void
+nf10bmac_media_status(struct ifnet *ifp __unused, struct ifmediareq *imr)
+{
+
+ imr->ifm_status = IFM_AVALID | IFM_ACTIVE;
+ imr->ifm_active = IFM_ETHER | IFM_10G_T | IFM_FDX;
+}
+
+static int
+nf10bmac_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
+{
+ struct nf10bmac_softc *sc;
+ struct ifreq *ifr;
+ int error, mask;
+
+ error = 0;
+ sc = ifp->if_softc;
+ ifr = (struct ifreq *)data;
+
+ switch (command) {
+ case SIOCSIFFLAGS:
+ NF10BMAC_LOCK(sc);
+ if (ifp->if_flags & IFF_UP) {
+ if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
+ ((ifp->if_flags ^ sc->nf10bmac_if_flags) &
+ (IFF_PROMISC | IFF_ALLMULTI)) != 0)
+ /* Nothing we can do. */ ;
+ else
+ nf10bmac_init_locked(sc);
+ } else if (ifp->if_drv_flags & IFF_DRV_RUNNING)
+ nf10bmac_stop_locked(sc);
+ sc->nf10bmac_if_flags = ifp->if_flags;
+ NF10BMAC_UNLOCK(sc);
+ break;
+ case SIOCSIFCAP:
+ NF10BMAC_LOCK(sc);
+ mask = ifr->ifr_reqcap ^ ifp->if_capenable;
+#ifdef DEVICE_POLLING
+ if ((mask & IFCAP_POLLING) != 0 &&
+ (IFCAP_POLLING & ifp->if_capabilities) != 0) {
+ ifp->if_capenable ^= IFCAP_POLLING;
+ if ((IFCAP_POLLING & ifp->if_capenable) != 0) {
+
+ error = ether_poll_register(nf10bmac_poll, ifp);
+ if (error != 0) {
+ NF10BMAC_UNLOCK(sc);
+ break;
+ }
+
+ /*
+ * Do not allow disabling of polling if we do
+ * not have interrupts.
+ */
+ } else {
+ ifp->if_capenable ^= IFCAP_POLLING;
+ error = EINVAL;
+ }
+ }
+#endif /* DEVICE_POLLING */
+ NF10BMAC_UNLOCK(sc);
+ break;
+ case SIOCGIFMEDIA:
+ case SIOCSIFMEDIA:
+ error = ifmedia_ioctl(ifp, ifr, &sc->nf10bmac_media, command);
+ break;
+ default:
+ error = ether_ioctl(ifp, command, data);
+ break;
+ }
+
+ return (error);
+}
+
+
+/*
+ * Generic device handling routines.
+ */
+int
+nf10bmac_attach(device_t dev)
+{
+ struct nf10bmac_softc *sc;
+ struct ifnet *ifp;
+ int error;
+
+ sc = device_get_softc(dev);
+
+ mtx_init(&sc->nf10bmac_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
+ MTX_DEF);
+
+#ifdef ENABLE_WATCHDOG
+ callout_init_mtx(&sc->nf10bmac_tick, &sc->nf10bmac_mtx, 0);
+#endif
+
+ sc->nf10bmac_tx_buf = malloc(ETHER_MAX_LEN_JUMBO, M_DEVBUF, M_WAITOK);
+
+ /* Reset the adapter. */
+ nf10bmac_reset(sc);
+
+ /* Setup interface. */
+ ifp = sc->nf10bmac_ifp = if_alloc(IFT_ETHER);
+ if (ifp == NULL) {
+ device_printf(dev, "if_alloc() failed\n");
+ error = ENOSPC;
+ goto err;
+ }
+ ifp->if_softc = sc;
+ if_initname(ifp, device_get_name(dev), device_get_unit(dev));
+ ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; /* | IFF_MULTICAST; */
+ ifp->if_ioctl = nf10bmac_ioctl;
+ ifp->if_start = nf10bmac_start;
+ ifp->if_init = nf10bmac_init;
+ IFQ_SET_MAXLEN(&ifp->if_snd, NF10BMAC_MAX_PKTS - 1);
+ ifp->if_snd.ifq_drv_maxlen = NF10BMAC_MAX_PKTS - 1;
+ IFQ_SET_READY(&ifp->if_snd);
+
+ /* Call media-indepedent attach routine. */
+ ether_ifattach(ifp, sc->nf10bmac_eth_addr);
+
+ /* Tell the upper layer(s) about vlan mtu support. */
+ ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
+ ifp->if_capabilities |= IFCAP_VLAN_MTU;
+ ifp->if_capenable = ifp->if_capabilities;
+#ifdef DEVICE_POLLING
+ /* We will enable polling by default if no irqs available. See below. */
+ ifp->if_capabilities |= IFCAP_POLLING;
+#endif
+
+ /* We need more media attention. Fake it! */
+ ifmedia_init(&sc->nf10bmac_media, 0, nf10bmac_media_change,
+ nf10bmac_media_status);
+ ifmedia_add(&sc->nf10bmac_media, IFM_ETHER | IFM_10G_T, 0, NULL);
+ ifmedia_set(&sc->nf10bmac_media, IFM_ETHER | IFM_10G_T);
+
+ /* Interrupts would go here. */
+
+#ifdef DEVICE_POLLING
+ ifp->if_capenable |= IFCAP_POLLING;
+ device_printf(dev, "forcing to polling due to no interrupts\n");
+ error = ether_poll_register(nf10bmac_poll, ifp);
+ if (error != 0)
+ goto err;
+#else
+ device_printf(dev, "no DEVICE_POLLING in kernel and no IRQs\n");
+ error = ENXIO;
+#endif
+
+err:
+ if (error != 0)
+ nf10bmac_detach(dev);
+
+ return (error);
+}
+
+static int
+nf10bmac_detach(device_t dev)
+{
+ struct nf10bmac_softc *sc;
+ struct ifnet *ifp;
+
+ sc = device_get_softc(dev);
+ KASSERT(mtx_initialized(&sc->nf10bmac_mtx),
+ ("%s: mutex not initialized", device_get_nameunit(dev)));
+ ifp = sc->nf10bmac_ifp;
+
+#ifdef DEVICE_POLLING
+ if (ifp->if_capenable & IFCAP_POLLING)
+ ether_poll_deregister(ifp);
+#endif
+
+ /* Only cleanup if attach succeeded. */
+ if (device_is_attached(dev)) {
+ NF10BMAC_LOCK(sc);
+ nf10bmac_stop_locked(sc);
+ NF10BMAC_UNLOCK(sc);
+#ifdef ENABLE_WATCHDOG
+ callout_drain(&sc->nf10bmac_tick);
+#endif
+ ether_ifdetach(ifp);
+ }
+
+ if (ifp != NULL)
+ if_free(ifp);
+ ifmedia_removeall(&sc->nf10bmac_media);
+
+ mtx_destroy(&sc->nf10bmac_mtx);
+
+ return (0);
+}
+
+/* Shared with the attachment specific (e.g., fdt) implementation. */
+void
+nf10bmac_detach_resources(device_t dev)
+{
+ struct nf10bmac_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ if (sc->nf10bmac_mem_res != NULL) {
+ bus_release_resource(dev, SYS_RES_MEMORY,
+ sc->nf10bmac_mem_rid, sc->nf10bmac_mem_res);
+ sc->nf10bmac_mem_res = NULL;
+ }
+ if (sc->nf10bmac_rx_mem_res != NULL) {
+ bus_release_resource(dev, SYS_RES_MEMORY,
+ sc->nf10bmac_rx_mem_rid, sc->nf10bmac_rx_mem_res);
+ sc->nf10bmac_rx_mem_res = NULL;
+ }
+ if (sc->nf10bmac_tx_mem_res != NULL) {
+ bus_release_resource(dev, SYS_RES_MEMORY,
+ sc->nf10bmac_tx_mem_rid, sc->nf10bmac_tx_mem_res);
+ sc->nf10bmac_tx_mem_res = NULL;
+ }
+}
+
+int
+nf10bmac_detach_dev(device_t dev)
+{
+ int error;
+
+ error = nf10bmac_detach(dev);
+ if (error) {
+ /* We are basically in undefined state now. */
+ device_printf(dev, "nf10bmac_detach() failed: %d\n", error);
+ return (error);
+ }
+
+ nf10bmac_detach_resources(dev);
+
+ return (0);
+}
+
+/* end */
Added: head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/netfpga10g/nf10bmac/if_nf10bmac_fdt.c Thu Apr 17 12:33:26
2014 (r264601)
@@ -0,0 +1,179 @@
+/*-
+ * Copyright (c) 2013-2014 Bjoern A. Zeeb
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249
+ * ("MRC2"), as part of the DARPA MRC research programme.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This driver is modelled after atse(4). We need to seriously reduce the
+ * per-driver code we have to write^wcopy & paste.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_media.h>
+#include <net/if_var.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include "if_nf10bmacreg.h"
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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