[PATCH] Ethernet driver For BBB ported from FreeBSD
ragu nath
ragunath3252 at gmail.com
Thu Jun 25 17:20:15 UTC 2015
Hi Gedare,
I will send them separately.
Thanks,
Ragunath
On Thu, Jun 25, 2015 at 10:29 PM, Gedare Bloom <gedare at gwu.edu> wrote:
> Can you split the commits so that the import from BSD is separate from
> your modifications to it?
>
> On Thu, Jun 25, 2015 at 12:18 PM, ragunath <ragunath3252 at gmail.com> wrote:
>> This patch includes changes for porting cpsw ethernet driver for Beaglebone black from Freebsd.
>> It also includes smsc phy ported from FreeBSD. Corresponding nexus devices are added.
>> For networking to work properly, two additional changes are needed on the RTEMS side.
>>
>> ---
>> Makefile | 3 +
>> freebsd/sys/arm/ti/cpsw/if_cpsw.c | 2239 ++++++++++++++++++++
>> freebsd/sys/arm/ti/cpsw/if_cpswreg.h | 137 ++
>> freebsd/sys/arm/ti/cpsw/if_cpswvar.h | 126 ++
>> freebsd/sys/dev/mii/smscphy.c | 227 ++
>> rtemsbsd/include/bsp/nexus-devices.h | 34 +
>> rtemsbsd/include/machine/rtems-bsd-cache.h | 2 +-
>> .../include/rtems/bsd/test/network-config.h.in | 2 +
>> 8 files changed, 2769 insertions(+), 1 deletion(-)
>> create mode 100644 freebsd/sys/arm/ti/cpsw/if_cpsw.c
>> create mode 100644 freebsd/sys/arm/ti/cpsw/if_cpswreg.h
>> create mode 100644 freebsd/sys/arm/ti/cpsw/if_cpswvar.h
>> create mode 100644 freebsd/sys/dev/mii/smscphy.c
>>
>> diff --git a/Makefile b/Makefile
>> index f747106..e215a07 100644
>> --- a/Makefile
>> +++ b/Makefile
>> @@ -26,6 +26,7 @@ COMMON_FLAGS += -Ifreebsd/contrib/tcpdump
>> COMMON_FLAGS += -Ifreebsd/lib/libmemstat
>> COMMON_FLAGS += -Ifreebsd/lib/libipsec
>> COMMON_FLAGS += -Irtemsbsd/sys
>> +COMMON_FLAGS += -Irtemsbsd/include/rtems/bsd/local
>> COMMON_FLAGS += -ImDNSResponder/mDNSCore
>> COMMON_FLAGS += -ImDNSResponder/mDNSShared
>> COMMON_FLAGS += -ImDNSResponder/mDNSPosix
>> @@ -185,10 +186,12 @@ LIB_C_FILES += freebsd/sys/dev/mii/brgphy.c
>> LIB_C_FILES += freebsd/sys/dev/mii/micphy.c
>> LIB_C_FILES += freebsd/sys/dev/mii/ukphy.c
>> LIB_C_FILES += freebsd/sys/dev/mii/ukphy_subr.c
>> +LIB_C_FILES += freebsd/sys/dev/mii/smscphy.c
>> LIB_C_FILES += freebsd/sys/dev/tsec/if_tsec.c
>> LIB_C_FILES += freebsd/sys/dev/cadence/if_cgem.c
>> LIB_C_FILES += freebsd/sys/dev/dwc/if_dwc.c
>> LIB_C_FILES += freebsd/sys/arm/xilinx/zy7_slcr.c
>> +LIB_C_FILES += freebsd/sys/arm/ti/cpsw/if_cpsw.c
>> LIB_C_FILES += freebsd/sys/dev/random/harvest.c
>> LIB_C_FILES += freebsd/sys/netinet/tcp_hostcache.c
>> LIB_C_FILES += freebsd/sys/dev/led/led.c
>> diff --git a/freebsd/sys/arm/ti/cpsw/if_cpsw.c b/freebsd/sys/arm/ti/cpsw/if_cpsw.c
>> new file mode 100644
>> index 0000000..0eb73ee
>> --- /dev/null
>> +++ b/freebsd/sys/arm/ti/cpsw/if_cpsw.c
>> @@ -0,0 +1,2239 @@
>> +#include <machine/rtems-bsd-kernel-space.h>
>> +/*-
>> + * Copyright (c) 2012 Damjan Marion <dmarion at Freebsd.org>
>> + * All rights reserved.
>> + *
>> + * 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.
>> + */
>> +
>> +/*
>> + * TI Common Platform Ethernet Switch (CPSW) Driver
>> + * Found in TI8148 "DaVinci" and AM335x "Sitara" SoCs.
>> + *
>> + * This controller is documented in the AM335x Technical Reference
>> + * Manual, in the TMS320DM814x DaVinci Digital Video Processors TRM
>> + * and in the TMS320C6452 3 Port Switch Ethernet Subsystem TRM.
>> + *
>> + * It is basically a single Ethernet port (port 0) wired internally to
>> + * a 3-port store-and-forward switch connected to two independent
>> + * "sliver" controllers (port 1 and port 2). You can operate the
>> + * controller in a variety of different ways by suitably configuring
>> + * the slivers and the Address Lookup Engine (ALE) that routes packets
>> + * between the ports.
>> + *
>> + * This code was developed and tested on a BeagleBone with
>> + * an AM335x SoC.
>> + */
>> +
>> +#include <sys/cdefs.h>
>> +__FBSDID("$FreeBSD$");
>> +
>> +#include <sys/param.h>
>> +#include <sys/systm.h>
>> +#include <sys/endian.h>
>> +#include <sys/mbuf.h>
>> +#ifndef __rtems__
>> +#include <sys/lock.h>
>> +#else
>> +#include <rtems/bsd/sys/lock.h>
>> +#endif
>> +#include <sys/mutex.h>
>> +#include <sys/kernel.h>
>> +#include <sys/module.h>
>> +#include <sys/socket.h>
>> +#include <sys/sysctl.h>
>> +
>> +#include <net/ethernet.h>
>> +#include <net/bpf.h>
>> +#include <net/if.h>
>> +#include <net/if_arp.h>
>> +#include <net/if_dl.h>
>> +#include <net/if_media.h>
>> +#include <net/if_types.h>
>> +#include <net/if_var.h>
>> +#include <net/if_vlan_var.h>
>> +
>> +#include <netinet/in_systm.h>
>> +#include <netinet/in.h>
>> +#include <netinet/ip.h>
>> +
>> +#include <sys/sockio.h>
>> +#include <sys/bus.h>
>> +#include <machine/bus.h>
>> +#include <sys/rman.h>
>> +#include <machine/resource.h>
>> +
>> +#include <dev/mii/mii.h>
>> +#include <dev/mii/miivar.h>
>> +#ifndef __rtems__
>> +#include <dev/fdt/fdt_common.h>
>> +#include <dev/ofw/ofw_bus.h>
>> +#include <dev/ofw/ofw_bus_subr.h>
>> +#endif
>> +#include "if_cpswreg.h"
>> +#include "if_cpswvar.h"
>> +#ifndef __rtems__
>> +#include <arm/ti/ti_scm.h>
>> +#endif
>> +#include "miibus_if.h"
>> +
>> +/* Device probe/attach/detach. */
>> +static int cpsw_probe(device_t);
>> +static void cpsw_init_slots(struct cpsw_softc *);
>> +static int cpsw_attach(device_t);
>> +static void cpsw_free_slot(struct cpsw_softc *, struct cpsw_slot *);
>> +static int cpsw_detach(device_t);
>> +
>> +/* Device Init/shutdown. */
>> +static void cpsw_init(void *);
>> +static void cpsw_init_locked(void *);
>> +static int cpsw_shutdown(device_t);
>> +static void cpsw_shutdown_locked(struct cpsw_softc *);
>> +
>> +/* Device Suspend/Resume. */
>> +static int cpsw_suspend(device_t);
>> +static int cpsw_resume(device_t);
>> +
>> +/* Ioctl. */
>> +static int cpsw_ioctl(struct ifnet *, u_long command, caddr_t data);
>> +
>> +static int cpsw_miibus_readreg(device_t, int phy, int reg);
>> +static int cpsw_miibus_writereg(device_t, int phy, int reg, int value);
>> +
>> +/* Send/Receive packets. */
>> +static void cpsw_intr_rx(void *arg);
>> +static struct mbuf *cpsw_rx_dequeue(struct cpsw_softc *);
>> +static void cpsw_rx_enqueue(struct cpsw_softc *);
>> +static void cpsw_start(struct ifnet *);
>> +static void cpsw_tx_enqueue(struct cpsw_softc *);
>> +static int cpsw_tx_dequeue(struct cpsw_softc *);
>> +
>> +/* Misc interrupts and watchdog. */
>> +static void cpsw_intr_rx_thresh(void *);
>> +static void cpsw_intr_misc(void *);
>> +static void cpsw_tick(void *);
>> +static void cpsw_ifmedia_sts(struct ifnet *, struct ifmediareq *);
>> +static int cpsw_ifmedia_upd(struct ifnet *);
>> +static void cpsw_tx_watchdog(struct cpsw_softc *);
>> +
>> +/* ALE support */
>> +static void cpsw_ale_read_entry(struct cpsw_softc *, uint16_t idx, uint32_t *ale_entry);
>> +static void cpsw_ale_write_entry(struct cpsw_softc *, uint16_t idx, uint32_t *ale_entry);
>> +static int cpsw_ale_mc_entry_set(struct cpsw_softc *, uint8_t portmap, uint8_t *mac);
>> +static int cpsw_ale_update_addresses(struct cpsw_softc *, int purge);
>> +static void cpsw_ale_dump_table(struct cpsw_softc *);
>> +
>> +/* Statistics and sysctls. */
>> +#ifndef __rtems__
>> +static void cpsw_add_sysctls(struct cpsw_softc *);
>> +static void cpsw_stats_collect(struct cpsw_softc *);
>> +static int cpsw_stats_sysctl(SYSCTL_HANDLER_ARGS);
>> +#endif
>> +
>> +/*
>> + * Arbitrary limit on number of segments in an mbuf to be transmitted.
>> + * Packets with more segments than this will be defragmented before
>> + * they are queued.
>> + */
>> +#define CPSW_TXFRAGS 8
>> +
>> +
>> +/*
>> + * TODO: The CPSW subsystem (CPSW_SS) can drive two independent PHYs
>> + * as separate Ethernet ports. To properly support this, we should
>> + * break this into two separate devices: a CPSW_SS device that owns
>> + * the interrupts and actually talks to the CPSW hardware, and a
>> + * separate CPSW Ethernet child device for each Ethernet port. The RX
>> + * interrupt, for example, would be part of CPSW_SS; it would receive
>> + * a packet, note the input port, and then dispatch it to the child
>> + * device's interface queue. Similarly for transmit.
>> + *
>> + * It's not clear to me whether the device tree should be restructured
>> + * with a cpsw_ss node and two child nodes. That would allow specifying
>> + * MAC addresses for each port, for example, but might be overkill.
>> + *
>> + * Unfortunately, I don't have hardware right now that supports two
>> + * Ethernet ports via CPSW.
>> + */
>> +
>> +static device_method_t cpsw_methods[] = {
>> + /* Device interface */
>> + DEVMETHOD(device_probe, cpsw_probe),
>> + DEVMETHOD(device_attach, cpsw_attach),
>> + DEVMETHOD(device_detach, cpsw_detach),
>> + DEVMETHOD(device_shutdown, cpsw_shutdown),
>> + DEVMETHOD(device_suspend, cpsw_suspend),
>> + DEVMETHOD(device_resume, cpsw_resume),
>> + /* MII interface */
>> + DEVMETHOD(miibus_readreg, cpsw_miibus_readreg),
>> + DEVMETHOD(miibus_writereg, cpsw_miibus_writereg),
>> + { 0, 0 }
>> +};
>> +
>> +static driver_t cpsw_driver = {
>> + "cpsw",
>> + cpsw_methods,
>> + sizeof(struct cpsw_softc),
>> +};
>> +
>> +static devclass_t cpsw_devclass;
>> +
>> +#ifndef __rtems__
>> +DRIVER_MODULE(cpsw, simplebus, cpsw_driver, cpsw_devclass, 0, 0);
>> +#else
>> +DRIVER_MODULE(cpsw, nexus, cpsw_driver, cpsw_devclass, 0, 0);
>> +#endif
>> +DRIVER_MODULE(miibus, cpsw, miibus_driver, miibus_devclass, 0, 0);
>> +MODULE_DEPEND(cpsw, ether, 1, 1, 1);
>> +MODULE_DEPEND(cpsw, miibus, 1, 1, 1);
>> +
>> +static struct resource_spec res_spec[] = {
>> + { SYS_RES_MEMORY, 0, RF_ACTIVE },
>> + { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
>> + { SYS_RES_IRQ, 1, RF_ACTIVE | RF_SHAREABLE },
>> + { SYS_RES_IRQ, 2, RF_ACTIVE | RF_SHAREABLE },
>> + { SYS_RES_IRQ, 3, RF_ACTIVE | RF_SHAREABLE },
>> + { -1, 0 }
>> +};
>> +
>> +#ifndef __rtems__
>> +/* Number of entries here must match size of stats
>> + * array in struct cpsw_softc. */
>> +static struct cpsw_stat {
>> + int reg;
>> + char *oid;
>> +} cpsw_stat_sysctls[CPSW_SYSCTL_COUNT] = {
>> + {0x00, "GoodRxFrames"},
>> + {0x04, "BroadcastRxFrames"},
>> + {0x08, "MulticastRxFrames"},
>> + {0x0C, "PauseRxFrames"},
>> + {0x10, "RxCrcErrors"},
>> + {0x14, "RxAlignErrors"},
>> + {0x18, "OversizeRxFrames"},
>> + {0x1c, "RxJabbers"},
>> + {0x20, "ShortRxFrames"},
>> + {0x24, "RxFragments"},
>> + {0x30, "RxOctets"},
>> + {0x34, "GoodTxFrames"},
>> + {0x38, "BroadcastTxFrames"},
>> + {0x3c, "MulticastTxFrames"},
>> + {0x40, "PauseTxFrames"},
>> + {0x44, "DeferredTxFrames"},
>> + {0x48, "CollisionsTxFrames"},
>> + {0x4c, "SingleCollisionTxFrames"},
>> + {0x50, "MultipleCollisionTxFrames"},
>> + {0x54, "ExcessiveCollisions"},
>> + {0x58, "LateCollisions"},
>> + {0x5c, "TxUnderrun"},
>> + {0x60, "CarrierSenseErrors"},
>> + {0x64, "TxOctets"},
>> + {0x68, "RxTx64OctetFrames"},
>> + {0x6c, "RxTx65to127OctetFrames"},
>> + {0x70, "RxTx128to255OctetFrames"},
>> + {0x74, "RxTx256to511OctetFrames"},
>> + {0x78, "RxTx512to1024OctetFrames"},
>> + {0x7c, "RxTx1024upOctetFrames"},
>> + {0x80, "NetOctets"},
>> + {0x84, "RxStartOfFrameOverruns"},
>> + {0x88, "RxMiddleOfFrameOverruns"},
>> + {0x8c, "RxDmaOverruns"}
>> +};
>> +#endif
>> +
>> +/*
>> + * Basic debug support.
>> + */
>> +
>> +#define IF_DEBUG(sc) if (sc->cpsw_if_flags & IFF_DEBUG)
>> +
>> +static void
>> +cpsw_debugf_head(const char *funcname)
>> +{
>> + int t = (int)(time_second % (24 * 60 * 60));
>> +
>> + printf("%02d:%02d:%02d %s ", t / (60 * 60), (t / 60) % 60, t % 60, funcname);
>> +}
>> +
>> +#include <machine/stdarg.h>
>> +static void
>> +cpsw_debugf(const char *fmt, ...)
>> +{
>> + va_list ap;
>> +
>> + va_start(ap, fmt);
>> + vprintf(fmt, ap);
>> + va_end(ap);
>> + printf("\n");
>> +
>> +}
>> +
>> +#define CPSW_DEBUGF(a) do { \
>> + IF_DEBUG(sc) { \
>> + cpsw_debugf_head(__func__); \
>> + cpsw_debugf a; \
>> + } \
>> +} while (0)
>> +
>> +
>> +/*
>> + * Locking macros
>> + */
>> +#define CPSW_TX_LOCK(sc) do { \
>> + mtx_assert(&(sc)->rx.lock, MA_NOTOWNED); \
>> + mtx_lock(&(sc)->tx.lock); \
>> +} while (0)
>> +
>> +#define CPSW_TX_UNLOCK(sc) mtx_unlock(&(sc)->tx.lock)
>> +#define CPSW_TX_LOCK_ASSERT(sc) mtx_assert(&(sc)->tx.lock, MA_OWNED)
>> +
>> +#define CPSW_RX_LOCK(sc) do { \
>> + mtx_assert(&(sc)->tx.lock, MA_NOTOWNED); \
>> + mtx_lock(&(sc)->rx.lock); \
>> +} while (0)
>> +
>> +#define CPSW_RX_UNLOCK(sc) mtx_unlock(&(sc)->rx.lock)
>> +#define CPSW_RX_LOCK_ASSERT(sc) mtx_assert(&(sc)->rx.lock, MA_OWNED)
>> +
>> +#define CPSW_GLOBAL_LOCK(sc) do { \
>> + if ((mtx_owned(&(sc)->tx.lock) ? 1 : 0) != \
>> + (mtx_owned(&(sc)->rx.lock) ? 1 : 0)) { \
>> + panic("cpsw deadlock possibility detection!"); \
>> + } \
>> + mtx_lock(&(sc)->tx.lock); \
>> + mtx_lock(&(sc)->rx.lock); \
>> +} while (0)
>> +
>> +#define CPSW_GLOBAL_UNLOCK(sc) do { \
>> + CPSW_RX_UNLOCK(sc); \
>> + CPSW_TX_UNLOCK(sc); \
>> +} while (0)
>> +
>> +#define CPSW_GLOBAL_LOCK_ASSERT(sc) do { \
>> + CPSW_TX_LOCK_ASSERT(sc); \
>> + CPSW_RX_LOCK_ASSERT(sc); \
>> +} while (0)
>> +
>> +/*
>> + * Read/Write macros
>> + */
>> +#define cpsw_read_4(sc, reg) bus_read_4(sc->res[0], reg)
>> +#define cpsw_write_4(sc, reg, val) bus_write_4(sc->res[0], reg, val)
>> +#define BUS_SPACE_PHYSADDR(res, offs) \
>> + ((u_int)(rman_get_start(res)+(offs)))
>> +#define CONTROL_MOD_BASE 0x44E10000
>> +#define cm_read(a) (*(volatile uint32_t *)(a))
>> +#define cm_write(a,v) (*(volatile uint32_t *)(a) = (v))
>> +
>> +
>> +#define cpsw_cpdma_bd_offset(i) (CPSW_CPPI_RAM_OFFSET + ((i)*16))
>> +
>> +#define cpsw_cpdma_bd_paddr(sc, slot) \
>> + BUS_SPACE_PHYSADDR(sc->res[0], slot->bd_offset)
>> +#define cpsw_cpdma_read_bd(sc, slot, val) \
>> + bus_read_region_4(sc->res[0], slot->bd_offset, (uint32_t *) val, 4)
>> +#define cpsw_cpdma_write_bd(sc, slot, val) \
>> + bus_write_region_4(sc->res[0], slot->bd_offset, (uint32_t *) val, 4)
>> +#define cpsw_cpdma_write_bd_next(sc, slot, next_slot) \
>> + cpsw_write_4(sc, slot->bd_offset, cpsw_cpdma_bd_paddr(sc, next_slot))
>> +#define cpsw_cpdma_read_bd_flags(sc, slot) \
>> + bus_read_2(sc->res[0], slot->bd_offset + 14)
>> +#define cpsw_write_hdp_slot(sc, queue, slot) \
>> + cpsw_write_4(sc, (queue)->hdp_offset, cpsw_cpdma_bd_paddr(sc, slot))
>> +#define CP_OFFSET (CPSW_CPDMA_TX_CP(0) - CPSW_CPDMA_TX_HDP(0))
>> +#define cpsw_read_cp(sc, queue) \
>> + cpsw_read_4(sc, (queue)->hdp_offset + CP_OFFSET)
>> +#define cpsw_write_cp(sc, queue, val) \
>> + cpsw_write_4(sc, (queue)->hdp_offset + CP_OFFSET, (val))
>> +#define cpsw_write_cp_slot(sc, queue, slot) \
>> + cpsw_write_cp(sc, queue, cpsw_cpdma_bd_paddr(sc, slot))
>> +
>> +#if 0
>> +/* XXX temporary function versions for debugging. */
>> +static void
>> +cpsw_write_hdp_slotX(struct cpsw_softc *sc, struct cpsw_queue *queue, struct cpsw_slot *slot)
>> +{
>> + uint32_t reg = queue->hdp_offset;
>> + uint32_t v = cpsw_cpdma_bd_paddr(sc, slot);
>> + CPSW_DEBUGF(("HDP <=== 0x%08x (was 0x%08x)", v, cpsw_read_4(sc, reg)));
>> + cpsw_write_4(sc, reg, v);
>> +}
>> +
>> +static void
>> +cpsw_write_cp_slotX(struct cpsw_softc *sc, struct cpsw_queue *queue, struct cpsw_slot *slot)
>> +{
>> + uint32_t v = cpsw_cpdma_bd_paddr(sc, slot);
>> + CPSW_DEBUGF(("CP <=== 0x%08x (expecting 0x%08x)", v, cpsw_read_cp(sc, queue)));
>> + cpsw_write_cp(sc, queue, v);
>> +}
>> +#endif
>> +
>> +/*
>> + * Expanded dump routines for verbose debugging.
>> + */
>> +static void
>> +cpsw_dump_slot(struct cpsw_softc *sc, struct cpsw_slot *slot)
>> +{
>> + static const char *flags[] = {"SOP", "EOP", "Owner", "EOQ",
>> + "TDownCmplt", "PassCRC", "Long", "Short", "MacCtl", "Overrun",
>> + "PktErr1", "PortEn/PktErr0", "RxVlanEncap", "Port2", "Port1",
>> + "Port0"};
>> + struct cpsw_cpdma_bd bd;
>> + const char *sep;
>> + int i;
>> +
>> + cpsw_cpdma_read_bd(sc, slot, &bd);
>> + printf("BD Addr: 0x%08x Next: 0x%08x\n", cpsw_cpdma_bd_paddr(sc, slot), bd.next);
>> + printf(" BufPtr: 0x%08x BufLen: 0x%08x\n", bd.bufptr, bd.buflen);
>> + printf(" BufOff: 0x%08x PktLen: 0x%08x\n", bd.bufoff, bd.pktlen);
>> + printf(" Flags: ");
>> + sep = "";
>> + for (i = 0; i < 16; ++i) {
>> + if (bd.flags & (1 << (15 - i))) {
>> + printf("%s%s", sep, flags[i]);
>> + sep = ",";
>> + }
>> + }
>> + printf("\n");
>> + if (slot->mbuf) {
>> + printf(" Ether: %14D\n",
>> + (char *)(slot->mbuf->m_data), " ");
>> + printf(" Packet: %16D\n",
>> + (char *)(slot->mbuf->m_data) + 14, " ");
>> + }
>> +}
>> +
>> +#define CPSW_DUMP_SLOT(cs, slot) do { \
>> + IF_DEBUG(sc) { \
>> + cpsw_dump_slot(sc, slot); \
>> + } \
>> +} while (0)
>> +
>> +
>> +static void
>> +cpsw_dump_queue(struct cpsw_softc *sc, struct cpsw_slots *q)
>> +{
>> + struct cpsw_slot *slot;
>> + int i = 0;
>> + int others = 0;
>> +
>> + STAILQ_FOREACH(slot, q, next) {
>> + if (i > 4)
>> + ++others;
>> + else
>> + cpsw_dump_slot(sc, slot);
>> + ++i;
>> + }
>> + if (others)
>> + printf(" ... and %d more.\n", others);
>> + printf("\n");
>> +}
>> +
>> +#define CPSW_DUMP_QUEUE(sc, q) do { \
>> + IF_DEBUG(sc) { \
>> + cpsw_dump_queue(sc, q); \
>> + } \
>> +} while (0)
>> +
>> +
>> +/*
>> + *
>> + * Device Probe, Attach, Detach.
>> + *
>> + */
>> +
>> +static int
>> +cpsw_probe(device_t dev)
>> +{
>> +#ifndef __rtems__
>> + if (!ofw_bus_status_okay(dev))
>> + return (ENXIO);
>> +
>> + if (!ofw_bus_is_compatible(dev, "ti,cpsw"))
>> + return (ENXIO);
>> +#endif
>> + device_set_desc(dev, "3-port Switch Ethernet Subsystem");
>> + return (BUS_PROBE_DEFAULT);
>> +}
>> +
>> +
>> +static void
>> +cpsw_init_slots(struct cpsw_softc *sc)
>> +{
>> + struct cpsw_slot *slot;
>> + int i;
>> +
>> + STAILQ_INIT(&sc->avail);
>> +
>> + /* Put the slot descriptors onto the global avail list. */
>> + for (i = 0; i < sizeof(sc->_slots) / sizeof(sc->_slots[0]); i++) {
>> + slot = &sc->_slots[i];
>> + slot->bd_offset = cpsw_cpdma_bd_offset(i);
>> + STAILQ_INSERT_TAIL(&sc->avail, slot, next);
>> + }
>> +}
>> +
>> +/*
>> + * bind an interrupt, add the relevant info to sc->interrupts
>> + */
>> +static int
>> +cpsw_attach_interrupt(struct cpsw_softc *sc, struct resource *res, driver_intr_t *handler, const char *description)
>> +{
>> + void **pcookie;
>> + int error;
>> +
>> + sc->interrupts[sc->interrupt_count].res = res;
>> + sc->interrupts[sc->interrupt_count].description = description;
>> + pcookie = &sc->interrupts[sc->interrupt_count].ih_cookie;
>> +
>> + error = bus_setup_intr(sc->dev, res, INTR_TYPE_NET | INTR_MPSAFE,
>> + NULL, *handler, sc, pcookie);
>> + if (error)
>> + device_printf(sc->dev,
>> + "could not setup %s\n", description);
>> + else
>> + ++sc->interrupt_count;
>> + return (error);
>> +}
>> +
>> +/*
>> + * teardown everything in sc->interrupts.
>> + */
>> +static void
>> +cpsw_detach_interrupts(struct cpsw_softc *sc)
>> +{
>> + int error;
>> + int i;
>> +
>> + for (i = 0; i < sizeof(sc->interrupts) / sizeof(sc->interrupts[0]); ++i) {
>> + if (!sc->interrupts[i].ih_cookie)
>> + continue;
>> + error = bus_teardown_intr(sc->dev,
>> + sc->interrupts[i].res, sc->interrupts[i].ih_cookie);
>> + if (error)
>> + device_printf(sc->dev, "could not release %s\n",
>> + sc->interrupts[i].description);
>> + sc->interrupts[i].ih_cookie = NULL;
>> + }
>> +}
>> +
>> +static int
>> +cpsw_add_slots(struct cpsw_softc *sc, struct cpsw_queue *queue, int requested)
>> +{
>> + const int max_slots = sizeof(sc->_slots) / sizeof(sc->_slots[0]);
>> + struct cpsw_slot *slot;
>> + int i;
>> +
>> + if (requested < 0)
>> + requested = max_slots;
>> +
>> + for (i = 0; i < requested; ++i) {
>> + slot = STAILQ_FIRST(&sc->avail);
>> + if (slot == NULL)
>> + return (0);
>> + if (bus_dmamap_create(sc->mbuf_dtag, 0, &slot->dmamap)) {
>> + if_printf(sc->ifp, "failed to create dmamap\n");
>> + return (ENOMEM);
>> + }
>> + STAILQ_REMOVE_HEAD(&sc->avail, next);
>> + STAILQ_INSERT_TAIL(&queue->avail, slot, next);
>> + ++queue->avail_queue_len;
>> + ++queue->queue_slots;
>> + }
>> + return (0);
>> +}
>> +
>> +static int
>> +cpsw_attach(device_t dev)
>> +{
>> + bus_dma_segment_t segs[1];
>> + struct cpsw_softc *sc = device_get_softc(dev);
>> + struct mii_softc *miisc;
>> + struct ifnet *ifp;
>> +#ifndef __rtems__
>> + void *phy_sc;
>> + int phy;
>> +#endif
>> + int error, nsegs;
>> + uint32_t reg;
>> +
>> + CPSW_DEBUGF((""));
>> +
>> + getbinuptime(&sc->attach_uptime);
>> + sc->dev = dev;
>> +#ifndef __rtems__
>> + sc->node = ofw_bus_get_node(dev);
>> + /* Get phy address from fdt */
>> + if (fdt_get_phyaddr(sc->node, sc->dev, &phy, &phy_sc) != 0) {
>> + device_printf(dev, "failed to get PHY address from FDT\n");
>> + return (ENXIO);
>> + }
>> +#endif
>> + /* Initialize mutexes */
>> + mtx_init(&sc->tx.lock, device_get_nameunit(dev),
>> + "cpsw TX lock", MTX_DEF);
>> + mtx_init(&sc->rx.lock, device_get_nameunit(dev),
>> + "cpsw RX lock", MTX_DEF);
>> +
>> + /* Allocate IO and IRQ resources */
>> + error = bus_alloc_resources(dev, res_spec, sc->res);
>> + if (error) {
>> + device_printf(dev, "could not allocate resources\n");
>> + cpsw_detach(dev);
>> + return (ENXIO);
>> + }
>> +
>> + reg = cpsw_read_4(sc, CPSW_SS_IDVER);
>> + device_printf(dev, "CPSW SS Version %d.%d (%d)\n", (reg >> 8 & 0x7),
>> + reg & 0xFF, (reg >> 11) & 0x1F);
>> +
>> +#ifndef __rtems__
>> + cpsw_add_sysctls(sc);
>> +#endif
>> +
>> + /* Allocate a busdma tag and DMA safe memory for mbufs. */
>> + error = bus_dma_tag_create(
>> + bus_get_dma_tag(sc->dev), /* parent */
>> + 1, 0, /* alignment, boundary */
>> + BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
>> + BUS_SPACE_MAXADDR, /* highaddr */
>> + NULL, NULL, /* filtfunc, filtfuncarg */
>> + MCLBYTES, CPSW_TXFRAGS, /* maxsize, nsegments */
>> + MCLBYTES, 0, /* maxsegsz, flags */
>> + NULL, NULL, /* lockfunc, lockfuncarg */
>> + &sc->mbuf_dtag); /* dmatag */
>> + if (error) {
>> + device_printf(dev, "bus_dma_tag_create failed\n");
>> + cpsw_detach(dev);
>> + return (error);
>> + }
>> +
>> + /* Allocate network interface */
>> + ifp = sc->ifp = if_alloc(IFT_ETHER);
>> + if (ifp == NULL) {
>> + device_printf(dev, "if_alloc() failed\n");
>> + cpsw_detach(dev);
>> + return (ENOMEM);
>> + }
>> +
>> + /* Allocate the null mbuf and pre-sync it. */
>> + sc->null_mbuf = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
>> + memset(sc->null_mbuf->m_data, 0, sc->null_mbuf->m_ext.ext_size);
>> + bus_dmamap_create(sc->mbuf_dtag, 0, &sc->null_mbuf_dmamap);
>> + bus_dmamap_load_mbuf_sg(sc->mbuf_dtag, sc->null_mbuf_dmamap,
>> + sc->null_mbuf, segs, &nsegs, BUS_DMA_NOWAIT);
>> + bus_dmamap_sync(sc->mbuf_dtag, sc->null_mbuf_dmamap,
>> + BUS_DMASYNC_PREWRITE);
>> + sc->null_mbuf_paddr = segs[0].ds_addr;
>> +
>> + if_initname(ifp, device_get_name(dev), device_get_unit(dev));
>> + ifp->if_softc = sc;
>> + ifp->if_flags = IFF_SIMPLEX | IFF_MULTICAST | IFF_BROADCAST;
>> + ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_HWCSUM; //FIXME VLAN?
>> + ifp->if_capenable = ifp->if_capabilities;
>> +
>> + ifp->if_init = cpsw_init;
>> + ifp->if_start = cpsw_start;
>> + ifp->if_ioctl = cpsw_ioctl;
>> +
>> + cpsw_init_slots(sc);
>> +
>> + /* Allocate slots to TX and RX queues. */
>> + STAILQ_INIT(&sc->rx.avail);
>> + STAILQ_INIT(&sc->rx.active);
>> + STAILQ_INIT(&sc->tx.avail);
>> + STAILQ_INIT(&sc->tx.active);
>> + // For now: 128 slots to TX, rest to RX.
>> + // XXX TODO: start with 32/64 and grow dynamically based on demand.
>> + if (cpsw_add_slots(sc, &sc->tx, 128) || cpsw_add_slots(sc, &sc->rx, -1)) {
>> + device_printf(dev, "failed to allocate dmamaps\n");
>> + cpsw_detach(dev);
>> + return (ENOMEM);
>> + }
>> + device_printf(dev, "Initial queue size TX=%d RX=%d\n",
>> + sc->tx.queue_slots, sc->rx.queue_slots);
>> +
>> + ifp->if_snd.ifq_drv_maxlen = sc->tx.queue_slots;
>> + IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
>> + IFQ_SET_READY(&ifp->if_snd);
>> +
>> + sc->tx.hdp_offset = CPSW_CPDMA_TX_HDP(0);
>> + sc->rx.hdp_offset = CPSW_CPDMA_RX_HDP(0);
>> +
>> + /* Get high part of MAC address from control module (mac_id0_hi) */
>> + /* TODO: Get MAC ID1 as well as MAC ID0. */
>> +#ifndef __rtems__
>> + ti_scm_reg_read_4(0x634, ®);
>> +#else
>> + reg = cm_read(CONTROL_MOD_BASE+0x634);
>> +#endif
>> + sc->mac_addr[0] = reg & 0xFF;
>> + sc->mac_addr[1] = (reg >> 8) & 0xFF;
>> + sc->mac_addr[2] = (reg >> 16) & 0xFF;
>> + sc->mac_addr[3] = (reg >> 24) & 0xFF;
>> +
>> + /* Get low part of MAC address from control module (mac_id0_lo) */
>> +#ifndef __rtems__
>> + ti_scm_reg_read_4(0x630, ®);
>> +#else
>> + reg = cm_read(CONTROL_MOD_BASE+0x630);
>> +#endif
>> + sc->mac_addr[4] = reg & 0xFF;
>> + sc->mac_addr[5] = (reg >> 8) & 0xFF;
>> +
>> + /* Initialze MDIO - ENABLE, PREAMBLE=0, FAULTENB, CLKDIV=0xFF */
>> + /* TODO Calculate MDCLK=CLK/(CLKDIV+1) */
>> + cpsw_write_4(sc, MDIOCONTROL, 1 << 30 | 1 << 18 | 0xFF);
>> +
>> + /* Clear ALE */
>> + cpsw_write_4(sc, CPSW_ALE_CONTROL, 1 << 30);
>> +
>> + /* Attach PHY(s) */
>> + error = mii_attach(dev, &sc->miibus, ifp, cpsw_ifmedia_upd,
>> + cpsw_ifmedia_sts, BMSR_DEFCAPMASK,MII_PHY_ANY, MII_OFFSET_ANY, 0);
>> + if (error) {
>> + device_printf(dev, "attaching PHYs failed\n");
>> + cpsw_detach(dev);
>> + return (error);
>> + }
>> + sc->mii = device_get_softc(sc->miibus);
>> +
>> + /* Tell the MAC where to find the PHY so autoneg works */
>> + miisc = LIST_FIRST(&sc->mii->mii_phys);
>> +
>> + /* Select PHY and enable interrupts */
>> + cpsw_write_4(sc, MDIOUSERPHYSEL0, 1 << 6 | (miisc->mii_phy & 0x1F));
>> +
>> + /* Note: We don't use sc->res[3] (TX interrupt) */
>> + if (cpsw_attach_interrupt(sc, sc->res[1],
>> + cpsw_intr_rx_thresh, "CPSW RX threshold interrupt") ||
>> + cpsw_attach_interrupt(sc, sc->res[2],
>> + cpsw_intr_rx, "CPSW RX interrupt") ||
>> + cpsw_attach_interrupt(sc, sc->res[4],
>> + cpsw_intr_misc, "CPSW misc interrupt")) {
>> + cpsw_detach(dev);
>> + return (ENXIO);
>> + }
>> +
>> + ether_ifattach(ifp, sc->mac_addr);
>> + callout_init(&sc->watchdog.callout, 0);
>> +
>> + return (0);
>> +}
>> +
>> +static void
>> +cpsw_free_slot(struct cpsw_softc *sc, struct cpsw_slot *slot)
>> +{
>> + int error;
>> +
>> + if (slot->dmamap) {
>> + error = bus_dmamap_destroy(sc->mbuf_dtag, slot->dmamap);
>> + KASSERT(error == 0, ("Mapping still active"));
>> + slot->dmamap = NULL;
>> + }
>> + if (slot->mbuf) {
>> + m_freem(slot->mbuf);
>> + slot->mbuf = NULL;
>> + }
>> +}
>> +
>> +static int
>> +cpsw_detach(device_t dev)
>> +{
>> + struct cpsw_softc *sc = device_get_softc(dev);
>> + int error, i;
>> +
>> + CPSW_DEBUGF((""));
>> +
>> + /* Stop controller and free TX queue */
>> + if (device_is_attached(dev)) {
>> + ether_ifdetach(sc->ifp);
>> + CPSW_GLOBAL_LOCK(sc);
>> + cpsw_shutdown_locked(sc);
>> + CPSW_GLOBAL_UNLOCK(sc);
>> + callout_drain(&sc->watchdog.callout);
>> + }
>> +
>> + bus_generic_detach(dev);
>> + if (sc->miibus)
>> + device_delete_child(dev, sc->miibus);
>> +
>> + /* Stop and release all interrupts */
>> + cpsw_detach_interrupts(sc);
>> +
>> + /* Free dmamaps and mbufs */
>> + for (i = 0; i < sizeof(sc->_slots) / sizeof(sc->_slots[0]); ++i)
>> + cpsw_free_slot(sc, &sc->_slots[i]);
>> + if (sc->null_mbuf_dmamap) {
>> + error = bus_dmamap_destroy(sc->mbuf_dtag, sc->null_mbuf_dmamap);
>> + KASSERT(error == 0, ("Mapping still active"));
>> + }
>> + if (sc->null_mbuf)
>> + m_freem(sc->null_mbuf);
>> +
>> + /* Free DMA tag */
>> + error = bus_dma_tag_destroy(sc->mbuf_dtag);
>> + KASSERT(error == 0, ("Unable to destroy DMA tag"));
>> +
>> + /* Free IO memory handler */
>> + bus_release_resources(dev, res_spec, sc->res);
>> +
>> + if (sc->ifp != NULL)
>> + if_free(sc->ifp);
>> +
>> + /* Destroy mutexes */
>> + mtx_destroy(&sc->rx.lock);
>> + mtx_destroy(&sc->tx.lock);
>> +
>> + return (0);
>> +}
>> +
>> +/*
>> + *
>> + * Init/Shutdown.
>> + *
>> + */
>> +
>> +static void
>> +cpsw_reset(struct cpsw_softc *sc)
>> +{
>> + int i;
>> +
>> + /* Reset RMII/RGMII wrapper. */
>> + cpsw_write_4(sc, CPSW_WR_SOFT_RESET, 1);
>> + while (cpsw_read_4(sc, CPSW_WR_SOFT_RESET) & 1)
>> + ;
>> +
>> + /* Disable TX and RX interrupts for all cores. */
>> + for (i = 0; i < 3; ++i) {
>> + cpsw_write_4(sc, CPSW_WR_C_RX_THRESH_EN(i), 0x00);
>> + cpsw_write_4(sc, CPSW_WR_C_TX_EN(i), 0x00);
>> + cpsw_write_4(sc, CPSW_WR_C_RX_EN(i), 0x00);
>> + cpsw_write_4(sc, CPSW_WR_C_MISC_EN(i), 0x00);
>> + }
>> +
>> + /* Reset CPSW subsystem. */
>> + cpsw_write_4(sc, CPSW_SS_SOFT_RESET, 1);
>> + while (cpsw_read_4(sc, CPSW_SS_SOFT_RESET) & 1)
>> + ;
>> +
>> + /* Reset Sliver port 1 and 2 */
>> + for (i = 0; i < 2; i++) {
>> + /* Reset */
>> + cpsw_write_4(sc, CPSW_SL_SOFT_RESET(i), 1);
>> + while (cpsw_read_4(sc, CPSW_SL_SOFT_RESET(i)) & 1)
>> + ;
>> + }
>> +
>> + /* Reset DMA controller. */
>> + cpsw_write_4(sc, CPSW_CPDMA_SOFT_RESET, 1);
>> + while (cpsw_read_4(sc, CPSW_CPDMA_SOFT_RESET) & 1)
>> + ;
>> +
>> + /* Disable TX & RX DMA */
>> + cpsw_write_4(sc, CPSW_CPDMA_TX_CONTROL, 0);
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_CONTROL, 0);
>> +
>> + /* Clear all queues. */
>> + for (i = 0; i < 8; i++) {
>> + cpsw_write_4(sc, CPSW_CPDMA_TX_HDP(i), 0);
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_HDP(i), 0);
>> + cpsw_write_4(sc, CPSW_CPDMA_TX_CP(i), 0);
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_CP(i), 0);
>> + }
>> +
>> + /* Clear all interrupt Masks */
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_INTMASK_CLEAR, 0xFFFFFFFF);
>> + cpsw_write_4(sc, CPSW_CPDMA_TX_INTMASK_CLEAR, 0xFFFFFFFF);
>> +}
>> +
>> +static void
>> +cpsw_init(void *arg)
>> +{
>> + struct cpsw_softc *sc = arg;
>> +
>> + CPSW_DEBUGF((""));
>> + CPSW_GLOBAL_LOCK(sc);
>> + cpsw_init_locked(arg);
>> + CPSW_GLOBAL_UNLOCK(sc);
>> +}
>> +
>> +static void
>> +cpsw_init_locked(void *arg)
>> +{
>> + struct ifnet *ifp;
>> + struct cpsw_softc *sc = arg;
>> + struct cpsw_slot *slot;
>> + uint32_t i;
>> +
>> + CPSW_DEBUGF((""));
>> + ifp = sc->ifp;
>> + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
>> + return;
>> +
>> + getbinuptime(&sc->init_uptime);
>> +
>> + /* Reset the controller. */
>> + cpsw_reset(sc);
>> +
>> + /* Enable ALE */
>> + cpsw_write_4(sc, CPSW_ALE_CONTROL, 1 << 31 | 1 << 4);
>> +
>> + /* Init Sliver port 1 and 2 */
>> + for (i = 0; i < 2; i++) {
>> + /* Set Slave Mapping */
>> + cpsw_write_4(sc, CPSW_SL_RX_PRI_MAP(i), 0x76543210);
>> + cpsw_write_4(sc, CPSW_PORT_P_TX_PRI_MAP(i + 1), 0x33221100);
>> + cpsw_write_4(sc, CPSW_SL_RX_MAXLEN(i), 0x5f2);
>> + /* Set MACCONTROL for ports 0,1: IFCTL_B(16), IFCTL_A(15),
>> + GMII_EN(5), FULLDUPLEX(1) */
>> + /* TODO: Docs claim that IFCTL_B and IFCTL_A do the same thing? */
>> + /* Huh? Docs call bit 0 "Loopback" some places, "FullDuplex" others. */
>> + cpsw_write_4(sc, CPSW_SL_MACCONTROL(i), 1 << 15 | 1 << 5 | 1);
>> + }
>> +
>> + /* Set Host Port Mapping */
>> + cpsw_write_4(sc, CPSW_PORT_P0_CPDMA_TX_PRI_MAP, 0x76543210);
>> + cpsw_write_4(sc, CPSW_PORT_P0_CPDMA_RX_CH_MAP, 0);
>> +
>> + /* Initialize ALE: all ports set to forwarding(3), initialize addrs */
>> + for (i = 0; i < 3; i++)
>> + cpsw_write_4(sc, CPSW_ALE_PORTCTL(i), 3);
>> + cpsw_ale_update_addresses(sc, 1);
>> +
>> + cpsw_write_4(sc, CPSW_SS_PTYPE, 0);
>> +
>> + /* Enable statistics for ports 0, 1 and 2 */
>> + cpsw_write_4(sc, CPSW_SS_STAT_PORT_EN, 7);
>> +
>> + /* Experiment: Turn off flow control */
>> + /* This seems to fix the watchdog resets that have plagued
>> + earlier versions of this driver; I'm not yet sure if there
>> + are negative effects yet. */
>> + cpsw_write_4(sc, CPSW_SS_FLOW_CONTROL, 0);
>> +
>> + /* Make IP hdr aligned with 4 */
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_BUFFER_OFFSET, 2);
>> +
>> + /* Initialize RX Buffer Descriptors */
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_FREEBUFFER(0), 0);
>> +
>> + /* Enable TX & RX DMA */
>> + cpsw_write_4(sc, CPSW_CPDMA_TX_CONTROL, 1);
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_CONTROL, 1);
>> +
>> + /* Enable Interrupts for core 0 */
>> + cpsw_write_4(sc, CPSW_WR_C_RX_THRESH_EN(0), 0xFF);
>> + cpsw_write_4(sc, CPSW_WR_C_RX_EN(0), 0xFF);
>> + cpsw_write_4(sc, CPSW_WR_C_MISC_EN(0), 0x3F);
>> +
>> + /* Enable host Error Interrupt */
>> + cpsw_write_4(sc, CPSW_CPDMA_DMA_INTMASK_SET, 3);
>> +
>> + /* Enable interrupts for RX Channel 0 */
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_INTMASK_SET, 1);
>> +
>> + /* Initialze MDIO - ENABLE, PREAMBLE=0, FAULTENB, CLKDIV=0xFF */
>> + /* TODO Calculate MDCLK=CLK/(CLKDIV+1) */
>> + cpsw_write_4(sc, MDIOCONTROL, 1 << 30 | 1 << 18 | 0xFF);
>> +
>> + /* Select MII in GMII_SEL, Internal Delay mode */
>> + //ti_scm_reg_write_4(0x650, 0);
>> +
>> + /* Initialize active queues. */
>> + slot = STAILQ_FIRST(&sc->tx.active);
>> + if (slot != NULL)
>> + cpsw_write_hdp_slot(sc, &sc->tx, slot);
>> + slot = STAILQ_FIRST(&sc->rx.active);
>> + if (slot != NULL)
>> + cpsw_write_hdp_slot(sc, &sc->rx, slot);
>> + cpsw_rx_enqueue(sc);
>> +
>> + /* Activate network interface */
>> + sc->rx.running = 1;
>> + sc->tx.running = 1;
>> + sc->watchdog.timer = 0;
>> + callout_reset(&sc->watchdog.callout, hz, cpsw_tick, sc);
>> + sc->ifp->if_drv_flags |= IFF_DRV_RUNNING;
>> + sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
>> +
>> +}
>> +
>> +static int
>> +cpsw_shutdown(device_t dev)
>> +{
>> + struct cpsw_softc *sc = device_get_softc(dev);
>> +
>> + CPSW_DEBUGF((""));
>> + CPSW_GLOBAL_LOCK(sc);
>> + cpsw_shutdown_locked(sc);
>> + CPSW_GLOBAL_UNLOCK(sc);
>> + return (0);
>> +}
>> +
>> +static void
>> +cpsw_rx_teardown_locked(struct cpsw_softc *sc)
>> +{
>> + struct mbuf *received, *next;
>> + int i = 0;
>> +
>> + CPSW_DEBUGF(("starting RX teardown"));
>> + cpsw_write_4(sc, CPSW_CPDMA_RX_TEARDOWN, 0);
>> + for (;;) {
>> + received = cpsw_rx_dequeue(sc);
>> + CPSW_GLOBAL_UNLOCK(sc);
>> + while (received != NULL) {
>> + next = received->m_nextpkt;
>> + received->m_nextpkt = NULL;
>> + (*sc->ifp->if_input)(sc->ifp, received);
>> + received = next;
>> + }
>> + CPSW_GLOBAL_LOCK(sc);
>> + if (!sc->rx.running) {
>> + CPSW_DEBUGF(("finished RX teardown (%d retries)", i));
>> + return;
>> + }
>> + if (++i > 10) {
>> + if_printf(sc->ifp, "Unable to cleanly shutdown receiver\n");
>> + return;
>> + }
>> + DELAY(10);
>> + }
>> +}
>> +
>> +static void
>> +cpsw_tx_teardown_locked(struct cpsw_softc *sc)
>> +{
>> + int i = 0;
>> +
>> + CPSW_DEBUGF(("starting TX teardown"));
>> + cpsw_write_4(sc, CPSW_CPDMA_TX_TEARDOWN, 0);
>> + cpsw_tx_dequeue(sc);
>> + while (sc->tx.running && ++i < 10) {
>> + DELAY(10);
>> + cpsw_tx_dequeue(sc);
>> + }
>> + if (sc->tx.running)
>> + if_printf(sc->ifp, "Unable to cleanly shutdown transmitter\n");
>> + CPSW_DEBUGF(("finished TX teardown (%d retries, %d idle buffers)",
>> + i, sc->tx.active_queue_len));
>> +}
>> +
>> +static void
>> +cpsw_shutdown_locked(struct cpsw_softc *sc)
>> +{
>> + struct ifnet *ifp;
>> +
>> + CPSW_DEBUGF((""));
>> + CPSW_GLOBAL_LOCK_ASSERT(sc);
>> + ifp = sc->ifp;
>> +
>> + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
>> + return;
>> +
>> + /* Disable interface */
>> + ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
>> + ifp->if_drv_flags |= IFF_DRV_OACTIVE;
>> +
>> + /* Stop ticker */
>> + callout_stop(&sc->watchdog.callout);
>> +
>> + /* Tear down the RX/TX queues. */
>> + cpsw_rx_teardown_locked(sc);
>> + cpsw_tx_teardown_locked(sc);
>> +
>> +#ifndef __rtems__
>> + /* Capture stats before we reset controller. */
>> + cpsw_stats_collect(sc);
>> +#endif
>> +
>> + cpsw_reset(sc);
>> +}
>> +
>> +/*
>> + * Suspend/Resume.
>> + */
>> +
>> +static int
>> +cpsw_suspend(device_t dev)
>> +{
>> + struct cpsw_softc *sc = device_get_softc(dev);
>> +
>> + CPSW_DEBUGF((""));
>> + CPSW_GLOBAL_LOCK(sc);
>> + cpsw_shutdown_locked(sc);
>> + CPSW_GLOBAL_UNLOCK(sc);
>> + return (0);
>> +}
>> +
>> +static int
>> +cpsw_resume(device_t dev)
>> +{
>> + struct cpsw_softc *sc = device_get_softc(dev);
>> +
>> + CPSW_DEBUGF(("UNIMPLEMENTED"));
>> + return (0);
>> +}
>> +
>> +/*
>> + *
>> + * IOCTL
>> + *
>> + */
>> +
>> +static void
>> +cpsw_set_promisc(struct cpsw_softc *sc, int set)
>> +{
>> + /*
>> + * Enabling promiscuous mode requires two bits of work: First,
>> + * ALE_BYPASS needs to be enabled. That disables the ALE
>> + * forwarding logic and causes every packet to be sent to the
>> + * host port. That makes us promiscuous wrt received packets.
>> + *
>> + * With ALE forwarding disabled, the transmitter needs to set
>> + * an explicit output port on every packet to route it to the
>> + * correct egress. This should be doable for systems such as
>> + * BeagleBone where only one egress port is actually wired to
>> + * a PHY. If you have both egress ports wired up, life gets a
>> + * lot more interesting.
>> + *
>> + * Hmmm.... NetBSD driver uses ALE_BYPASS always and doesn't
>> + * seem to set explicit egress ports. Does that mean they
>> + * are always promiscuous?
>> + */
>> + if (set) {
>> + printf("Promiscuous mode unimplemented\n");
>> + }
>> +}
>> +
>> +static void
>> +cpsw_set_allmulti(struct cpsw_softc *sc, int set)
>> +{
>> + if (set) {
>> + printf("All-multicast mode unimplemented\n");
>> + }
>> +}
>> +
>> +static int
>> +cpsw_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
>> +{
>> + struct cpsw_softc *sc = ifp->if_softc;
>> + struct ifreq *ifr = (struct ifreq *)data;
>> + int error;
>> + uint32_t changed;
>> +
>> + error = 0;
>> +
>> + switch (command) {
>> + case SIOCSIFFLAGS:
>> + CPSW_GLOBAL_LOCK(sc);
>> + if (ifp->if_flags & IFF_UP) {
>> + if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
>> + changed = ifp->if_flags ^ sc->cpsw_if_flags;
>> + CPSW_DEBUGF(("SIOCSIFFLAGS: UP & RUNNING (changed=0x%x)", changed));
>> + if (changed & IFF_PROMISC)
>> + cpsw_set_promisc(sc,
>> + ifp->if_flags & IFF_PROMISC);
>> + if (changed & IFF_ALLMULTI)
>> + cpsw_set_allmulti(sc,
>> + ifp->if_flags & IFF_ALLMULTI);
>> + } else {
>> + CPSW_DEBUGF(("SIOCSIFFLAGS: UP but not RUNNING; starting up"));
>> + cpsw_init_locked(sc);
>> + }
>> + } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
>> + CPSW_DEBUGF(("SIOCSIFFLAGS: not UP but RUNNING; shutting down"));
>> + cpsw_shutdown_locked(sc);
>> + }
>> +
>> + sc->cpsw_if_flags = ifp->if_flags;
>> + CPSW_GLOBAL_UNLOCK(sc);
>> + break;
>> + case SIOCADDMULTI:
>> + cpsw_ale_update_addresses(sc, 0);
>> + break;
>> + case SIOCDELMULTI:
>> + /* Ugh. DELMULTI doesn't provide the specific address
>> + being removed, so the best we can do is remove
>> + everything and rebuild it all. */
>> + cpsw_ale_update_addresses(sc, 1);
>> + break;
>> + case SIOCGIFMEDIA:
>> + case SIOCSIFMEDIA:
>> + error = ifmedia_ioctl(ifp, ifr, &sc->mii->mii_media, command);
>> + break;
>> + default:
>> + error = ether_ioctl(ifp, command, data);
>> + }
>> + return (error);
>> +}
>> +
>> +/*
>> + *
>> + * MIIBUS
>> + *
>> + */
>> +static int
>> +cpsw_miibus_ready(struct cpsw_softc *sc)
>> +{
>> + uint32_t r, retries = CPSW_MIIBUS_RETRIES;
>> +
>> + while (--retries) {
>> + r = cpsw_read_4(sc, MDIOUSERACCESS0);
>> + if ((r & 1 << 31) == 0)
>> + return 1;
>> + DELAY(CPSW_MIIBUS_DELAY);
>> + }
>> + return 0;
>> +}
>> +
>> +static int
>> +cpsw_miibus_readreg(device_t dev, int phy, int reg)
>> +{
>> + struct cpsw_softc *sc = device_get_softc(dev);
>> + uint32_t cmd, r;
>> +
>> + if (!cpsw_miibus_ready(sc)) {
>> + device_printf(dev, "MDIO not ready to read\n");
>> + return 0;
>> + }
>> +
>> + /* Set GO, reg, phy */
>> + cmd = 1 << 31 | (reg & 0x1F) << 21 | (phy & 0x1F) << 16;
>> + cpsw_write_4(sc, MDIOUSERACCESS0, cmd);
>> +
>> + if (!cpsw_miibus_ready(sc)) {
>> + device_printf(dev, "MDIO timed out during read\n");
>> + return 0;
>> + }
>> +
>> + r = cpsw_read_4(sc, MDIOUSERACCESS0);
>> + if((r & 1 << 29) == 0) {
>> + CPSW_DEBUGF(("Failed to read from PHY.\n"));
>> + r = 0;
>> + }
>> + return (r & 0xFFFF);
>> +}
>> +
>> +static int
>> +cpsw_miibus_writereg(device_t dev, int phy, int reg, int value)
>> +{
>> + struct cpsw_softc *sc = device_get_softc(dev);
>> + uint32_t cmd;
>> +
>> + if (!cpsw_miibus_ready(sc)) {
>> + device_printf(dev, "MDIO not ready to write\n");
>> + return 0;
>> + }
>> +
>> + /* Set GO, WRITE, reg, phy, and value */
>> + cmd = 3 << 30 | (reg & 0x1F) << 21 | (phy & 0x1F) << 16
>> + | (value & 0xFFFF);
>> + cpsw_write_4(sc, MDIOUSERACCESS0, cmd);
>> +
>> + if (!cpsw_miibus_ready(sc)) {
>> + device_printf(dev, "MDIO timed out during write\n");
>> + return 0;
>> + }
>> +
>> + if((cpsw_read_4(sc, MDIOUSERACCESS0) & (1 << 29)) == 0)
>> + CPSW_DEBUGF(("Failed to write to PHY.\n"));
>> +
>> + return 0;
>> +}
>> +
>> +/*
>> + *
>> + * Transmit/Receive Packets.
>> + *
>> + */
>> +
>> +
>> +static void
>> +cpsw_intr_rx(void *arg)
>> +{
>> + struct cpsw_softc *sc = arg;
>> + struct mbuf *received, *next;
>> +
>> + CPSW_RX_LOCK(sc);
>> + received = cpsw_rx_dequeue(sc);
>> + cpsw_rx_enqueue(sc);
>> + cpsw_write_4(sc, CPSW_CPDMA_CPDMA_EOI_VECTOR, 1);
>> + CPSW_RX_UNLOCK(sc);
>> +
>> + while (received != NULL) {
>> + next = received->m_nextpkt;
>> + received->m_nextpkt = NULL;
>> + (*sc->ifp->if_input)(sc->ifp, received);
>> + received = next;
>> + }
>> +}
>> +
>> +static struct mbuf *
>> +cpsw_rx_dequeue(struct cpsw_softc *sc)
>> +{
>> + struct cpsw_cpdma_bd bd;
>> + struct cpsw_slot *slot;
>> + struct ifnet *ifp;
>> + struct mbuf *mb_head, *mb_tail;
>> + int removed = 0;
>> +
>> + ifp = sc->ifp;
>> + mb_head = mb_tail = NULL;
>> +
>> + /* Pull completed packets off hardware RX queue. */
>> + while ((slot = STAILQ_FIRST(&sc->rx.active)) != NULL) {
>> + cpsw_cpdma_read_bd(sc, slot, &bd);
>> + if (bd.flags & CPDMA_BD_OWNER)
>> + break; /* Still in use by hardware */
>> +
>> + CPSW_DEBUGF(("Removing received packet from RX queue"));
>> + ++removed;
>> + STAILQ_REMOVE_HEAD(&sc->rx.active, next);
>> + STAILQ_INSERT_TAIL(&sc->rx.avail, slot, next);
>> +
>> + bus_dmamap_sync(sc->mbuf_dtag, slot->dmamap, BUS_DMASYNC_POSTREAD);
>> + bus_dmamap_unload(sc->mbuf_dtag, slot->dmamap);
>> +
>> + if (bd.flags & CPDMA_BD_TDOWNCMPLT) {
>> + CPSW_DEBUGF(("RX teardown in progress"));
>> + m_freem(slot->mbuf);
>> + slot->mbuf = NULL;
>> + cpsw_write_cp(sc, &sc->rx, 0xfffffffc);
>> + sc->rx.running = 0;
>> + break;
>> + }
>> +
>> + cpsw_write_cp_slot(sc, &sc->rx, slot);
>> +
>> + /* Set up mbuf */
>> + /* TODO: track SOP/EOP bits to assemble a full mbuf
>> + out of received fragments. */
>> + slot->mbuf->m_data += bd.bufoff;
>> + slot->mbuf->m_len = bd.pktlen - 4;
>> + slot->mbuf->m_pkthdr.len = bd.pktlen - 4;
>> + slot->mbuf->m_flags |= M_PKTHDR;
>> + slot->mbuf->m_pkthdr.rcvif = ifp;
>> + slot->mbuf->m_nextpkt = NULL;
>> +
>> + if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) {
>> + /* check for valid CRC by looking into pkt_err[5:4] */
>> + if ((bd.flags & CPDMA_BD_PKT_ERR_MASK) == 0) {
>> + slot->mbuf->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
>> + slot->mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID;
>> + slot->mbuf->m_pkthdr.csum_data = 0xffff;
>> + }
>> + }
>> +
>> + /* Add mbuf to packet list to be returned. */
>> + if (mb_tail) {
>> + mb_tail->m_nextpkt = slot->mbuf;
>> + } else {
>> + mb_head = slot->mbuf;
>> + }
>> + mb_tail = slot->mbuf;
>> + slot->mbuf = NULL;
>> + }
>> +
>> + if (removed != 0) {
>> + sc->rx.queue_removes += removed;
>> + sc->rx.active_queue_len -= removed;
>> + sc->rx.avail_queue_len += removed;
>> + if (sc->rx.avail_queue_len > sc->rx.max_avail_queue_len)
>> + sc->rx.max_avail_queue_len = sc->rx.avail_queue_len;
>> + }
>> + return (mb_head);
>> +}
>> +
>> +static void
>> +cpsw_rx_enqueue(struct cpsw_softc *sc)
>> +{
>> + bus_dma_segment_t seg[1];
>> + struct cpsw_cpdma_bd bd;
>> + struct ifnet *ifp = sc->ifp;
>> + struct cpsw_slots tmpqueue = STAILQ_HEAD_INITIALIZER(tmpqueue);
>> + struct cpsw_slot *slot, *prev_slot = NULL;
>> + struct cpsw_slot *last_old_slot, *first_new_slot;
>> + int error, nsegs, added = 0;
>> +
>> + /* Register new mbufs with hardware. */
>> + while ((slot = STAILQ_FIRST(&sc->rx.avail)) != NULL) {
>> + if (slot->mbuf == NULL) {
>> + slot->mbuf = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
>> + if (slot->mbuf == NULL) {
>> + if_printf(sc->ifp, "Unable to fill RX queue\n");
>> + break;
>> + }
>> + slot->mbuf->m_len =
>> + slot->mbuf->m_pkthdr.len =
>> + slot->mbuf->m_ext.ext_size;
>> + }
>> +
>> + error = bus_dmamap_load_mbuf_sg(sc->mbuf_dtag, slot->dmamap,
>> + slot->mbuf, seg, &nsegs, BUS_DMA_NOWAIT);
>> +
>> + KASSERT(nsegs == 1, ("More than one segment (nsegs=%d)", nsegs));
>> + KASSERT(error == 0, ("DMA error (error=%d)", error));
>> + if (error != 0 || nsegs != 1) {
>> + if_printf(ifp,
>> + "%s: Can't prep RX buf for DMA (nsegs=%d, error=%d)\n",
>> + __func__, nsegs, error);
>> + bus_dmamap_unload(sc->mbuf_dtag, slot->dmamap);
>> + m_freem(slot->mbuf);
>> + slot->mbuf = NULL;
>> + break;
>> + }
>> +
>> + bus_dmamap_sync(sc->mbuf_dtag, slot->dmamap, BUS_DMASYNC_PREREAD);
>> +
>> + /* Create and submit new rx descriptor*/
>> + bd.next = 0;
>> + bd.bufptr = seg->ds_addr;
>> + bd.bufoff = 0;
>> + bd.buflen = MCLBYTES - 1;
>> + bd.pktlen = bd.buflen;
>> + bd.flags = CPDMA_BD_OWNER;
>> + cpsw_cpdma_write_bd(sc, slot, &bd);
>> + ++added;
>> +
>> + if (prev_slot != NULL)
>> + cpsw_cpdma_write_bd_next(sc, prev_slot, slot);
>> + prev_slot = slot;
>> + STAILQ_REMOVE_HEAD(&sc->rx.avail, next);
>> + sc->rx.avail_queue_len--;
>> + STAILQ_INSERT_TAIL(&tmpqueue, slot, next);
>> + }
>> +
>> + if (added == 0)
>> + return;
>> +
>> + CPSW_DEBUGF(("Adding %d buffers to RX queue", added));
>> +
>> + /* Link new entries to hardware RX queue. */
>> + last_old_slot = STAILQ_LAST(&sc->rx.active, cpsw_slot, next);
>> + first_new_slot = STAILQ_FIRST(&tmpqueue);
>> + STAILQ_CONCAT(&sc->rx.active, &tmpqueue);
>> + if (first_new_slot == NULL) {
>> + return;
>> + } else if (last_old_slot == NULL) {
>> + /* Start a fresh queue. */
>> + cpsw_write_hdp_slot(sc, &sc->rx, first_new_slot);
>> + } else {
>> + /* Add buffers to end of current queue. */
>> + cpsw_cpdma_write_bd_next(sc, last_old_slot, first_new_slot);
>> + /* If underrun, restart queue. */
>> + if (cpsw_cpdma_read_bd_flags(sc, last_old_slot) & CPDMA_BD_EOQ) {
>> + cpsw_write_hdp_slot(sc, &sc->rx, first_new_slot);
>> + }
>> + }
>> + sc->rx.queue_adds += added;
>> + sc->rx.active_queue_len += added;
>> + if (sc->rx.active_queue_len > sc->rx.max_active_queue_len) {
>> + sc->rx.max_active_queue_len = sc->rx.active_queue_len;
>> + }
>> +}
>> +
>> +static void
>> +cpsw_start(struct ifnet *ifp)
>> +{
>> + struct cpsw_softc *sc = ifp->if_softc;
>> +
>> + CPSW_TX_LOCK(sc);
>> + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && sc->tx.running) {
>> + cpsw_tx_enqueue(sc);
>> + cpsw_tx_dequeue(sc);
>> + }
>> + CPSW_TX_UNLOCK(sc);
>> +}
>> +
>> +static void
>> +cpsw_tx_enqueue(struct cpsw_softc *sc)
>> +{
>> + bus_dma_segment_t segs[CPSW_TXFRAGS];
>> + struct cpsw_cpdma_bd bd;
>> + struct cpsw_slots tmpqueue = STAILQ_HEAD_INITIALIZER(tmpqueue);
>> + struct cpsw_slot *slot, *prev_slot = NULL;
>> + struct cpsw_slot *last_old_slot, *first_new_slot;
>> + struct mbuf *m0;
>> + int error, nsegs, seg, added = 0, padlen;
>> +
>> + /* Pull pending packets from IF queue and prep them for DMA. */
>> + while ((slot = STAILQ_FIRST(&sc->tx.avail)) != NULL) {
>> + IF_DEQUEUE(&sc->ifp->if_snd, m0);
>> + if (m0 == NULL)
>> + break;
>> +
>> + slot->mbuf = m0;
>> + padlen = ETHER_MIN_LEN - slot->mbuf->m_pkthdr.len;
>> + if (padlen < 0)
>> + padlen = 0;
>> +
>> + /* Create mapping in DMA memory */
>> + error = bus_dmamap_load_mbuf_sg(sc->mbuf_dtag, slot->dmamap,
>> + slot->mbuf, segs, &nsegs, BUS_DMA_NOWAIT);
>> + /* If the packet is too fragmented, try to simplify. */
>> + if (error == EFBIG ||
>> + (error == 0 &&
>> + nsegs + (padlen > 0 ? 1 : 0) > sc->tx.avail_queue_len)) {
>> + bus_dmamap_unload(sc->mbuf_dtag, slot->dmamap);
>> + if (padlen > 0) /* May as well add padding. */
>> + m_append(slot->mbuf, padlen,
>> + sc->null_mbuf->m_data);
>> + m0 = m_defrag(slot->mbuf, M_NOWAIT);
>> + if (m0 == NULL) {
>> + if_printf(sc->ifp,
>> + "Can't defragment packet; dropping\n");
>> + m_freem(slot->mbuf);
>> + } else {
>> + CPSW_DEBUGF(("Requeueing defragmented packet"));
>> + IF_PREPEND(&sc->ifp->if_snd, m0);
>> + }
>> + slot->mbuf = NULL;
>> + continue;
>> + }
>> + if (error != 0) {
>> + if_printf(sc->ifp,
>> + "%s: Can't setup DMA (error=%d), dropping packet\n",
>> + __func__, error);
>> + bus_dmamap_unload(sc->mbuf_dtag, slot->dmamap);
>> + m_freem(slot->mbuf);
>> + slot->mbuf = NULL;
>> + break;
>> + }
>> +
>> + bus_dmamap_sync(sc->mbuf_dtag, slot->dmamap,
>> + BUS_DMASYNC_PREWRITE);
>> +
>> +
>> + CPSW_DEBUGF(("Queueing TX packet: %d segments + %d pad bytes",
>> + nsegs, padlen));
>> +
>> + /* If there is only one segment, the for() loop
>> + * gets skipped and the single buffer gets set up
>> + * as both SOP and EOP. */
>> + /* Start by setting up the first buffer */
>> + bd.next = 0;
>> + bd.bufptr = segs[0].ds_addr;
>> + bd.bufoff = 0;
>> + bd.buflen = segs[0].ds_len;
>> + bd.pktlen = m_length(slot->mbuf, NULL) + padlen;
>> + bd.flags = CPDMA_BD_SOP | CPDMA_BD_OWNER;
>> + for (seg = 1; seg < nsegs; ++seg) {
>> + /* Save the previous buffer (which isn't EOP) */
>> + cpsw_cpdma_write_bd(sc, slot, &bd);
>> + if (prev_slot != NULL)
>> + cpsw_cpdma_write_bd_next(sc, prev_slot, slot);
>> + prev_slot = slot;
>> + STAILQ_REMOVE_HEAD(&sc->tx.avail, next);
>> + sc->tx.avail_queue_len--;
>> + STAILQ_INSERT_TAIL(&tmpqueue, slot, next);
>> + ++added;
>> + slot = STAILQ_FIRST(&sc->tx.avail);
>> +
>> + /* Setup next buffer (which isn't SOP) */
>> + bd.next = 0;
>> + bd.bufptr = segs[seg].ds_addr;
>> + bd.bufoff = 0;
>> + bd.buflen = segs[seg].ds_len;
>> + bd.pktlen = 0;
>> + bd.flags = CPDMA_BD_OWNER;
>> + }
>> + /* Save the final buffer. */
>> + if (padlen <= 0)
>> + bd.flags |= CPDMA_BD_EOP;
>> + cpsw_cpdma_write_bd(sc, slot, &bd);
>> + if (prev_slot != NULL)
>> + cpsw_cpdma_write_bd_next(sc, prev_slot, slot);
>> + prev_slot = slot;
>> + STAILQ_REMOVE_HEAD(&sc->tx.avail, next);
>> + sc->tx.avail_queue_len--;
>> + STAILQ_INSERT_TAIL(&tmpqueue, slot, next);
>> + ++added;
>> +
>> + if (padlen > 0) {
>> + slot = STAILQ_FIRST(&sc->tx.avail);
>> + STAILQ_REMOVE_HEAD(&sc->tx.avail, next);
>> + sc->tx.avail_queue_len--;
>> + STAILQ_INSERT_TAIL(&tmpqueue, slot, next);
>> + ++added;
>> +
>> + /* Setup buffer of null pad bytes (definitely EOP) */
>> + cpsw_cpdma_write_bd_next(sc, prev_slot, slot);
>> + prev_slot = slot;
>> + bd.next = 0;
>> + bd.bufptr = sc->null_mbuf_paddr;
>> + bd.bufoff = 0;
>> + bd.buflen = padlen;
>> + bd.pktlen = 0;
>> + bd.flags = CPDMA_BD_EOP | CPDMA_BD_OWNER;
>> + cpsw_cpdma_write_bd(sc, slot, &bd);
>> + ++nsegs;
>> + }
>> +
>> + if (nsegs > sc->tx.longest_chain)
>> + sc->tx.longest_chain = nsegs;
>> +
>> + // TODO: Should we defer the BPF tap until
>> + // after all packets are queued?
>> + BPF_MTAP(sc->ifp, m0);
>> + }
>> +
>> + /* Attach the list of new buffers to the hardware TX queue. */
>> + last_old_slot = STAILQ_LAST(&sc->tx.active, cpsw_slot, next);
>> + first_new_slot = STAILQ_FIRST(&tmpqueue);
>> + STAILQ_CONCAT(&sc->tx.active, &tmpqueue);
>> + if (first_new_slot == NULL) {
>> + return;
>> + } else if (last_old_slot == NULL) {
>> + /* Start a fresh queue. */
>> + cpsw_write_hdp_slot(sc, &sc->tx, first_new_slot);
>> + } else {
>> + /* Add buffers to end of current queue. */
>> + cpsw_cpdma_write_bd_next(sc, last_old_slot, first_new_slot);
>> + /* If underrun, restart queue. */
>> + if (cpsw_cpdma_read_bd_flags(sc, last_old_slot) & CPDMA_BD_EOQ) {
>> + cpsw_write_hdp_slot(sc, &sc->tx, first_new_slot);
>> + }
>> + }
>> + sc->tx.queue_adds += added;
>> + sc->tx.active_queue_len += added;
>> + if (sc->tx.active_queue_len > sc->tx.max_active_queue_len) {
>> + sc->tx.max_active_queue_len = sc->tx.active_queue_len;
>> + }
>> +}
>> +
>> +static int
>> +cpsw_tx_dequeue(struct cpsw_softc *sc)
>> +{
>> + struct cpsw_slot *slot, *last_removed_slot = NULL;
>> + uint32_t flags, removed = 0;
>> +
>> + slot = STAILQ_FIRST(&sc->tx.active);
>> + if (slot == NULL && cpsw_read_cp(sc, &sc->tx) == 0xfffffffc) {
>> + CPSW_DEBUGF(("TX teardown of an empty queue"));
>> + cpsw_write_cp(sc, &sc->tx, 0xfffffffc);
>> + sc->tx.running = 0;
>> + return (0);
>> + }
>> +
>> + /* Pull completed buffers off the hardware TX queue. */
>> + while (slot != NULL) {
>> + flags = cpsw_cpdma_read_bd_flags(sc, slot);
>> + if (flags & CPDMA_BD_OWNER)
>> + break; /* Hardware is still using this packet. */
>> +
>> + CPSW_DEBUGF(("TX removing completed packet"));
>> + bus_dmamap_sync(sc->mbuf_dtag, slot->dmamap, BUS_DMASYNC_POSTWRITE);
>> + bus_dmamap_unload(sc->mbuf_dtag, slot->dmamap);
>> + m_freem(slot->mbuf);
>> + slot->mbuf = NULL;
>> +
>> + /* Dequeue any additional buffers used by this packet. */
>> + while (slot != NULL && slot->mbuf == NULL) {
>> + STAILQ_REMOVE_HEAD(&sc->tx.active, next);
>> + STAILQ_INSERT_TAIL(&sc->tx.avail, slot, next);
>> + ++removed;
>> + last_removed_slot = slot;
>> + slot = STAILQ_FIRST(&sc->tx.active);
>> + }
>> +
>> + /* TearDown complete is only marked on the SOP for the packet. */
>> + if (flags & CPDMA_BD_TDOWNCMPLT) {
>> + CPSW_DEBUGF(("TX teardown in progress"));
>> + cpsw_write_cp(sc, &sc->tx, 0xfffffffc);
>> + // TODO: Increment a count of dropped TX packets
>> + sc->tx.running = 0;
>> + break;
>> + }
>> + }
>> +
>> + if (removed != 0) {
>> + cpsw_write_cp_slot(sc, &sc->tx, last_removed_slot);
>> + sc->tx.queue_removes += removed;
>> + sc->tx.active_queue_len -= removed;
>> + sc->tx.avail_queue_len += removed;
>> + if (sc->tx.avail_queue_len > sc->tx.max_avail_queue_len)
>> + sc->tx.max_avail_queue_len = sc->tx.avail_queue_len;
>> + }
>> + return (removed);
>> +}
>> +
>> +/*
>> + *
>> + * Miscellaneous interrupts.
>> + *
>> + */
>> +
>> +static void
>> +cpsw_intr_rx_thresh(void *arg)
>> +{
>> + struct cpsw_softc *sc = arg;
>> + uint32_t stat = cpsw_read_4(sc, CPSW_WR_C_RX_THRESH_STAT(0));
>> +
>> + CPSW_DEBUGF(("stat=%x", stat));
>> + cpsw_write_4(sc, CPSW_CPDMA_CPDMA_EOI_VECTOR, 0);
>> +}
>> +
>> +static void
>> +cpsw_intr_misc_host_error(struct cpsw_softc *sc)
>> +{
>> + uint32_t intstat;
>> + uint32_t dmastat;
>> + int txerr, rxerr, txchan, rxchan;
>> +
>> + printf("\n\n");
>> + device_printf(sc->dev,
>> + "HOST ERROR: PROGRAMMING ERROR DETECTED BY HARDWARE\n");
>> + printf("\n\n");
>> + intstat = cpsw_read_4(sc, CPSW_CPDMA_DMA_INTSTAT_MASKED);
>> + device_printf(sc->dev, "CPSW_CPDMA_DMA_INTSTAT_MASKED=0x%x\n", intstat);
>> + dmastat = cpsw_read_4(sc, CPSW_CPDMA_DMASTATUS);
>> + device_printf(sc->dev, "CPSW_CPDMA_DMASTATUS=0x%x\n", dmastat);
>> +
>> + txerr = (dmastat >> 20) & 15;
>> + txchan = (dmastat >> 16) & 7;
>> + rxerr = (dmastat >> 12) & 15;
>> + rxchan = (dmastat >> 8) & 7;
>> +
>> + switch (txerr) {
>> + case 0: break;
>> + case 1: printf("SOP error on TX channel %d\n", txchan);
>> + break;
>> + case 2: printf("Ownership bit not set on SOP buffer on TX channel %d\n", txchan);
>> + break;
>> + case 3: printf("Zero Next Buffer but not EOP on TX channel %d\n", txchan);
>> + break;
>> + case 4: printf("Zero Buffer Pointer on TX channel %d\n", txchan);
>> + break;
>> + case 5: printf("Zero Buffer Length on TX channel %d\n", txchan);
>> + break;
>> + case 6: printf("Packet length error on TX channel %d\n", txchan);
>> + break;
>> + default: printf("Unknown error on TX channel %d\n", txchan);
>> + break;
>> + }
>> +
>> + if (txerr != 0) {
>> + printf("CPSW_CPDMA_TX%d_HDP=0x%x\n",
>> + txchan, cpsw_read_4(sc, CPSW_CPDMA_TX_HDP(txchan)));
>> + printf("CPSW_CPDMA_TX%d_CP=0x%x\n",
>> + txchan, cpsw_read_4(sc, CPSW_CPDMA_TX_CP(txchan)));
>> + cpsw_dump_queue(sc, &sc->tx.active);
>> + }
>> +
>> + switch (rxerr) {
>> + case 0: break;
>> + case 2: printf("Ownership bit not set on RX channel %d\n", rxchan);
>> + break;
>> + case 4: printf("Zero Buffer Pointer on RX channel %d\n", rxchan);
>> + break;
>> + case 5: printf("Zero Buffer Length on RX channel %d\n", rxchan);
>> + break;
>> + case 6: printf("Buffer offset too big on RX channel %d\n", rxchan);
>> + break;
>> + default: printf("Unknown RX error on RX channel %d\n", rxchan);
>> + break;
>> + }
>> +
>> + if (rxerr != 0) {
>> + printf("CPSW_CPDMA_RX%d_HDP=0x%x\n",
>> + rxchan, cpsw_read_4(sc,CPSW_CPDMA_RX_HDP(rxchan)));
>> + printf("CPSW_CPDMA_RX%d_CP=0x%x\n",
>> + rxchan, cpsw_read_4(sc, CPSW_CPDMA_RX_CP(rxchan)));
>> + cpsw_dump_queue(sc, &sc->rx.active);
>> + }
>> +
>> + printf("\nALE Table\n");
>> + cpsw_ale_dump_table(sc);
>> +
>> + // XXX do something useful here??
>> + panic("CPSW HOST ERROR INTERRUPT");
>> +
>> + // Suppress this interrupt in the future.
>> + cpsw_write_4(sc, CPSW_CPDMA_DMA_INTMASK_CLEAR, intstat);
>> + printf("XXX HOST ERROR INTERRUPT SUPPRESSED\n");
>> + // The watchdog will probably reset the controller
>> + // in a little while. It will probably fail again.
>> +}
>> +
>> +static void
>> +cpsw_intr_misc(void *arg)
>> +{
>> + struct cpsw_softc *sc = arg;
>> + uint32_t stat = cpsw_read_4(sc, CPSW_WR_C_MISC_STAT(0));
>> +
>> + if (stat & 16)
>> + CPSW_DEBUGF(("Time sync event interrupt unimplemented"));
>> +#ifndef __rtems__
>> + if (stat & 8)
>> + cpsw_stats_collect(sc);
>> +#endif
>> + if (stat & 4)
>> + cpsw_intr_misc_host_error(sc);
>> + if (stat & 2)
>> + CPSW_DEBUGF(("MDIO link change interrupt unimplemented"));
>> + if (stat & 1)
>> + CPSW_DEBUGF(("MDIO operation completed interrupt unimplemented"));
>> + cpsw_write_4(sc, CPSW_CPDMA_CPDMA_EOI_VECTOR, 3);
>> +}
>> +
>> +/*
>> + *
>> + * Periodic Checks and Watchdog.
>> + *
>> + */
>> +
>> +static void
>> +cpsw_tick(void *msc)
>> +{
>> + struct cpsw_softc *sc = msc;
>> +
>> + /* Check for TX timeout */
>> + cpsw_tx_watchdog(sc);
>> +
>> + /* Check for media type change */
>> + mii_tick(sc->mii);
>> + if(sc->cpsw_media_status != sc->mii->mii_media.ifm_media) {
>> + printf("%s: media type changed (ifm_media=%x)\n", __func__,
>> + sc->mii->mii_media.ifm_media);
>> + cpsw_ifmedia_upd(sc->ifp);
>> + }
>> +
>> + /* Schedule another timeout one second from now */
>> + callout_reset(&sc->watchdog.callout, hz, cpsw_tick, sc);
>> +}
>> +
>> +static void
>> +cpsw_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
>> +{
>> + struct cpsw_softc *sc = ifp->if_softc;
>> + struct mii_data *mii;
>> +
>> + CPSW_DEBUGF((""));
>> + CPSW_TX_LOCK(sc);
>> +
>> + mii = sc->mii;
>> + mii_pollstat(mii);
>> +
>> + ifmr->ifm_active = mii->mii_media_active;
>> + ifmr->ifm_status = mii->mii_media_status;
>> +
>> + CPSW_TX_UNLOCK(sc);
>> +}
>> +
>> +static int
>> +cpsw_ifmedia_upd(struct ifnet *ifp)
>> +{
>> + struct cpsw_softc *sc = ifp->if_softc;
>> +
>> + CPSW_DEBUGF((""));
>> + if (ifp->if_flags & IFF_UP) {
>> + CPSW_GLOBAL_LOCK(sc);
>> + sc->cpsw_media_status = sc->mii->mii_media.ifm_media;
>> + mii_mediachg(sc->mii);
>> + cpsw_init_locked(sc);
>> + CPSW_GLOBAL_UNLOCK(sc);
>> + }
>> +
>> + return (0);
>> +}
>> +
>> +static void
>> +cpsw_tx_watchdog_full_reset(struct cpsw_softc *sc)
>> +{
>> + cpsw_debugf_head("CPSW watchdog");
>> + if_printf(sc->ifp, "watchdog timeout\n");
>> + cpsw_shutdown_locked(sc);
>> + cpsw_init_locked(sc);
>> +}
>> +
>> +static void
>> +cpsw_tx_watchdog(struct cpsw_softc *sc)
>> +{
>> + struct ifnet *ifp = sc->ifp;
>> +
>> + CPSW_GLOBAL_LOCK(sc);
>> + if (sc->tx.active_queue_len == 0 || (ifp->if_flags & IFF_UP) == 0 ||
>> + (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || !sc->tx.running) {
>> + sc->watchdog.timer = 0; /* Nothing to do. */
>> + } else if (sc->tx.queue_removes > sc->tx.queue_removes_at_last_tick) {
>> + sc->watchdog.timer = 0; /* Stuff done while we weren't looking. */
>> + } else if (cpsw_tx_dequeue(sc) > 0) {
>> + sc->watchdog.timer = 0; /* We just did something. */
>> + } else {
>> + /* There was something to do but it didn't get done. */
>> + ++sc->watchdog.timer;
>> + if (sc->watchdog.timer > 2) {
>> + sc->watchdog.timer = 0;
>> +#ifndef __rtems__
>> + if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
>> +#else
>> + sc->ifp->if_oerrors++;
>> +#endif
>> + ++sc->watchdog.resets;
>> + cpsw_tx_watchdog_full_reset(sc);
>> + }
>> + }
>> + sc->tx.queue_removes_at_last_tick = sc->tx.queue_removes;
>> + CPSW_GLOBAL_UNLOCK(sc);
>> +}
>> +
>> +/*
>> + *
>> + * ALE support routines.
>> + *
>> + */
>> +
>> +static void
>> +cpsw_ale_read_entry(struct cpsw_softc *sc, uint16_t idx, uint32_t *ale_entry)
>> +{
>> + cpsw_write_4(sc, CPSW_ALE_TBLCTL, idx & 1023);
>> + ale_entry[0] = cpsw_read_4(sc, CPSW_ALE_TBLW0);
>> + ale_entry[1] = cpsw_read_4(sc, CPSW_ALE_TBLW1);
>> + ale_entry[2] = cpsw_read_4(sc, CPSW_ALE_TBLW2);
>> +}
>> +
>> +static void
>> +cpsw_ale_write_entry(struct cpsw_softc *sc, uint16_t idx, uint32_t *ale_entry)
>> +{
>> + cpsw_write_4(sc, CPSW_ALE_TBLW0, ale_entry[0]);
>> + cpsw_write_4(sc, CPSW_ALE_TBLW1, ale_entry[1]);
>> + cpsw_write_4(sc, CPSW_ALE_TBLW2, ale_entry[2]);
>> + cpsw_write_4(sc, CPSW_ALE_TBLCTL, 1 << 31 | (idx & 1023));
>> +}
>> +
>> +static int
>> +cpsw_ale_remove_all_mc_entries(struct cpsw_softc *sc)
>> +{
>> + int i;
>> + uint32_t ale_entry[3];
>> +
>> + /* First two entries are link address and broadcast. */
>> + for (i = 2; i < CPSW_MAX_ALE_ENTRIES; i++) {
>> + cpsw_ale_read_entry(sc, i, ale_entry);
>> + if (((ale_entry[1] >> 28) & 3) == 1 && /* Address entry */
>> + ((ale_entry[1] >> 8) & 1) == 1) { /* MCast link addr */
>> + ale_entry[0] = ale_entry[1] = ale_entry[2] = 0;
>> + cpsw_ale_write_entry(sc, i, ale_entry);
>> + }
>> + }
>> + return CPSW_MAX_ALE_ENTRIES;
>> +}
>> +
>> +static int
>> +cpsw_ale_mc_entry_set(struct cpsw_softc *sc, uint8_t portmap, uint8_t *mac)
>> +{
>> + int free_index = -1, matching_index = -1, i;
>> + uint32_t ale_entry[3];
>> +
>> + /* Find a matching entry or a free entry. */
>> + for (i = 0; i < CPSW_MAX_ALE_ENTRIES; i++) {
>> + cpsw_ale_read_entry(sc, i, ale_entry);
>> +
>> + /* Entry Type[61:60] is 0 for free entry */
>> + if (free_index < 0 && ((ale_entry[1] >> 28) & 3) == 0) {
>> + free_index = i;
>> + }
>> +
>> + if ((((ale_entry[1] >> 8) & 0xFF) == mac[0]) &&
>> + (((ale_entry[1] >> 0) & 0xFF) == mac[1]) &&
>> + (((ale_entry[0] >>24) & 0xFF) == mac[2]) &&
>> + (((ale_entry[0] >>16) & 0xFF) == mac[3]) &&
>> + (((ale_entry[0] >> 8) & 0xFF) == mac[4]) &&
>> + (((ale_entry[0] >> 0) & 0xFF) == mac[5])) {
>> + matching_index = i;
>> + break;
>> + }
>> + }
>> +
>> + if (matching_index < 0) {
>> + if (free_index < 0)
>> + return (ENOMEM);
>> + i = free_index;
>> + }
>> +
>> + /* Set MAC address */
>> + ale_entry[0] = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
>> + ale_entry[1] = mac[0] << 8 | mac[1];
>> +
>> + /* Entry type[61:60] is addr entry(1), Mcast fwd state[63:62] is fw(3)*/
>> + ale_entry[1] |= 0xd0 << 24;
>> +
>> + /* Set portmask [68:66] */
>> + ale_entry[2] = (portmap & 7) << 2;
>> +
>> + cpsw_ale_write_entry(sc, i, ale_entry);
>> +
>> + return 0;
>> +}
>> +
>> +static void
>> +cpsw_ale_dump_table(struct cpsw_softc *sc) {
>> + int i;
>> + uint32_t ale_entry[3];
>> + for (i = 0; i < CPSW_MAX_ALE_ENTRIES; i++) {
>> + cpsw_ale_read_entry(sc, i, ale_entry);
>> + if (ale_entry[0] || ale_entry[1] || ale_entry[2]) {
>> + printf("ALE[%4u] %08x %08x %08x ", i, ale_entry[0],
>> + ale_entry[1], ale_entry[2]);
>> + printf("mac: %02x:%02x:%02x:%02x:%02x:%02x ",
>> + (ale_entry[1] >> 8) & 0xFF,
>> + (ale_entry[1] >> 0) & 0xFF,
>> + (ale_entry[0] >>24) & 0xFF,
>> + (ale_entry[0] >>16) & 0xFF,
>> + (ale_entry[0] >> 8) & 0xFF,
>> + (ale_entry[0] >> 0) & 0xFF);
>> + printf(((ale_entry[1] >> 8) & 1) ? "mcast " : "ucast ");
>> + printf("type: %u ", (ale_entry[1] >> 28) & 3);
>> + printf("port: %u ", (ale_entry[2] >> 2) & 7);
>> + printf("\n");
>> + }
>> + }
>> + printf("\n");
>> +}
>> +
>> +static int
>> +cpsw_ale_update_addresses(struct cpsw_softc *sc, int purge)
>> +{
>> + uint8_t *mac;
>> + uint32_t ale_entry[3];
>> + struct ifnet *ifp = sc->ifp;
>> + struct ifmultiaddr *ifma;
>> + int i;
>> +
>> + /* Route incoming packets for our MAC address to Port 0 (host). */
>> + /* For simplicity, keep this entry at table index 0 in the ALE. */
>> + if_addr_rlock(ifp);
>> + mac = LLADDR((struct sockaddr_dl *)ifp->if_addr->ifa_addr);
>> + ale_entry[0] = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
>> + ale_entry[1] = 0x10 << 24 | mac[0] << 8 | mac[1]; /* addr entry + mac */
>> + ale_entry[2] = 0; /* port = 0 */
>> + cpsw_ale_write_entry(sc, 0, ale_entry);
>> +
>> + /* Set outgoing MAC Address for Ports 1 and 2. */
>> + for (i = 1; i < 3; ++i) {
>> + cpsw_write_4(sc, CPSW_PORT_P_SA_HI(i),
>> + mac[3] << 24 | mac[2] << 16 | mac[1] << 8 | mac[0]);
>> + cpsw_write_4(sc, CPSW_PORT_P_SA_LO(i),
>> + mac[5] << 8 | mac[4]);
>> + }
>> + if_addr_runlock(ifp);
>> +
>> + /* Keep the broadcast address at table entry 1. */
>> + ale_entry[0] = 0xffffffff; /* Lower 32 bits of MAC */
>> + ale_entry[1] = 0xd000ffff; /* FW (3 << 30), Addr entry (1 << 24), upper 16 bits of Mac */
>> + ale_entry[2] = 0x0000001c; /* Forward to all ports */
>> + cpsw_ale_write_entry(sc, 1, ale_entry);
>> +
>> + /* SIOCDELMULTI doesn't specify the particular address
>> + being removed, so we have to remove all and rebuild. */
>> + if (purge)
>> + cpsw_ale_remove_all_mc_entries(sc);
>> +
>> + /* Set other multicast addrs desired. */
>> + if_maddr_rlock(ifp);
>> + TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
>> + if (ifma->ifma_addr->sa_family != AF_LINK)
>> + continue;
>> + cpsw_ale_mc_entry_set(sc, 7,
>> + LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
>> + }
>> + if_maddr_runlock(ifp);
>> +
>> + return (0);
>> +}
>> +
>> +/*
>> + *
>> + * Statistics and Sysctls.
>> + *
>> + */
>> +
>> +#if 0
>> +static void
>> +cpsw_stats_dump(struct cpsw_softc *sc)
>> +{
>> + int i;
>> + uint32_t r;
>> +
>> + for (i = 0; i < CPSW_SYSCTL_COUNT; ++i) {
>> + r = cpsw_read_4(sc, CPSW_STATS_OFFSET +
>> + cpsw_stat_sysctls[i].reg);
>> + CPSW_DEBUGF(("%s: %ju + %u = %ju", cpsw_stat_sysctls[i].oid,
>> + (intmax_t)sc->shadow_stats[i], r,
>> + (intmax_t)sc->shadow_stats[i] + r));
>> + }
>> +}
>> +#endif
>> +
>> +#ifndef __rtems__
>> +static void
>> +cpsw_stats_collect(struct cpsw_softc *sc)
>> +{
>> + int i;
>> + uint32_t r;
>> +
>> + CPSW_DEBUGF(("Controller shadow statistics updated."));
>> +
>> + for (i = 0; i < CPSW_SYSCTL_COUNT; ++i) {
>> + r = cpsw_read_4(sc, CPSW_STATS_OFFSET +
>> + cpsw_stat_sysctls[i].reg);
>> + sc->shadow_stats[i] += r;
>> + cpsw_write_4(sc, CPSW_STATS_OFFSET + cpsw_stat_sysctls[i].reg, r);
>> + }
>> +}
>> +
>> +static int
>> +cpsw_stats_sysctl(SYSCTL_HANDLER_ARGS)
>> +{
>> + struct cpsw_softc *sc;
>> + struct cpsw_stat *stat;
>> + uint64_t result;
>> +
>> + sc = (struct cpsw_softc *)arg1;
>> + stat = &cpsw_stat_sysctls[oidp->oid_number];
>> + result = sc->shadow_stats[oidp->oid_number];
>> + result += cpsw_read_4(sc, CPSW_STATS_OFFSET + stat->reg);
>> + return (sysctl_handle_64(oidp, &result, 0, req));
>> +}
>> +
>> +static int
>> +cpsw_stat_attached(SYSCTL_HANDLER_ARGS)
>> +{
>> + struct cpsw_softc *sc;
>> + struct bintime t;
>> + unsigned result;
>> +
>> + sc = (struct cpsw_softc *)arg1;
>> + getbinuptime(&t);
>> + bintime_sub(&t, &sc->attach_uptime);
>> + result = t.sec;
>> + return (sysctl_handle_int(oidp, &result, 0, req));
>> +}
>> +
>> +static int
>> +cpsw_stat_uptime(SYSCTL_HANDLER_ARGS)
>> +{
>> + struct cpsw_softc *sc;
>> + struct bintime t;
>> + unsigned result;
>> +
>> + sc = (struct cpsw_softc *)arg1;
>> + if (sc->ifp->if_drv_flags & IFF_DRV_RUNNING) {
>> + getbinuptime(&t);
>> + bintime_sub(&t, &sc->init_uptime);
>> + result = t.sec;
>> + } else
>> + result = 0;
>> + return (sysctl_handle_int(oidp, &result, 0, req));
>> +}
>> +
>> +static void
>> +cpsw_add_queue_sysctls(struct sysctl_ctx_list *ctx, struct sysctl_oid *node, struct cpsw_queue *queue)
>> +{
>> + struct sysctl_oid_list *parent;
>> +
>> + parent = SYSCTL_CHILDREN(node);
>> + SYSCTL_ADD_INT(ctx, parent, OID_AUTO, "totalBuffers",
>> + CTLFLAG_RD, &queue->queue_slots, 0,
>> + "Total buffers currently assigned to this queue");
>> + SYSCTL_ADD_INT(ctx, parent, OID_AUTO, "activeBuffers",
>> + CTLFLAG_RD, &queue->active_queue_len, 0,
>> + "Buffers currently registered with hardware controller");
>> + SYSCTL_ADD_INT(ctx, parent, OID_AUTO, "maxActiveBuffers",
>> + CTLFLAG_RD, &queue->max_active_queue_len, 0,
>> + "Max value of activeBuffers since last driver reset");
>> + SYSCTL_ADD_INT(ctx, parent, OID_AUTO, "availBuffers",
>> + CTLFLAG_RD, &queue->avail_queue_len, 0,
>> + "Buffers allocated to this queue but not currently "
>> + "registered with hardware controller");
>> + SYSCTL_ADD_INT(ctx, parent, OID_AUTO, "maxAvailBuffers",
>> + CTLFLAG_RD, &queue->max_avail_queue_len, 0,
>> + "Max value of availBuffers since last driver reset");
>> + SYSCTL_ADD_UINT(ctx, parent, OID_AUTO, "totalEnqueued",
>> + CTLFLAG_RD, &queue->queue_adds, 0,
>> + "Total buffers added to queue");
>> + SYSCTL_ADD_UINT(ctx, parent, OID_AUTO, "totalDequeued",
>> + CTLFLAG_RD, &queue->queue_removes, 0,
>> + "Total buffers removed from queue");
>> + SYSCTL_ADD_UINT(ctx, parent, OID_AUTO, "longestChain",
>> + CTLFLAG_RD, &queue->longest_chain, 0,
>> + "Max buffers used for a single packet");
>> +}
>> +
>> +static void
>> +cpsw_add_watchdog_sysctls(struct sysctl_ctx_list *ctx, struct sysctl_oid *node, struct cpsw_softc *sc)
>> +{
>> + struct sysctl_oid_list *parent;
>> +
>> + parent = SYSCTL_CHILDREN(node);
>> + SYSCTL_ADD_INT(ctx, parent, OID_AUTO, "resets",
>> + CTLFLAG_RD, &sc->watchdog.resets, 0,
>> + "Total number of watchdog resets");
>> +}
>> +
>> +static void
>> +cpsw_add_sysctls(struct cpsw_softc *sc)
>> +{
>> + struct sysctl_ctx_list *ctx;
>> + struct sysctl_oid *stats_node, *queue_node, *node;
>> + struct sysctl_oid_list *parent, *stats_parent, *queue_parent;
>> + int i;
>> +
>> + ctx = device_get_sysctl_ctx(sc->dev);
>> + parent = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev));
>> +
>> + SYSCTL_ADD_PROC(ctx, parent, OID_AUTO, "attachedSecs",
>> + CTLTYPE_UINT | CTLFLAG_RD, sc, 0, cpsw_stat_attached, "IU",
>> + "Time since driver attach");
>> +
>> + SYSCTL_ADD_PROC(ctx, parent, OID_AUTO, "uptime",
>> + CTLTYPE_UINT | CTLFLAG_RD, sc, 0, cpsw_stat_uptime, "IU",
>> + "Seconds since driver init");
>> +
>> + stats_node = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "stats",
>> + CTLFLAG_RD, NULL, "CPSW Statistics");
>> + stats_parent = SYSCTL_CHILDREN(stats_node);
>> + for (i = 0; i < CPSW_SYSCTL_COUNT; ++i) {
>> + SYSCTL_ADD_PROC(ctx, stats_parent, i,
>> + cpsw_stat_sysctls[i].oid,
>> + CTLTYPE_U64 | CTLFLAG_RD, sc, 0,
>> + cpsw_stats_sysctl, "IU",
>> + cpsw_stat_sysctls[i].oid);
>> + }
>> +
>> + queue_node = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "queue",
>> + CTLFLAG_RD, NULL, "CPSW Queue Statistics");
>> + queue_parent = SYSCTL_CHILDREN(queue_node);
>> +
>> + node = SYSCTL_ADD_NODE(ctx, queue_parent, OID_AUTO, "tx",
>> + CTLFLAG_RD, NULL, "TX Queue Statistics");
>> + cpsw_add_queue_sysctls(ctx, node, &sc->tx);
>> +
>> + node = SYSCTL_ADD_NODE(ctx, queue_parent, OID_AUTO, "rx",
>> + CTLFLAG_RD, NULL, "RX Queue Statistics");
>> + cpsw_add_queue_sysctls(ctx, node, &sc->rx);
>> +
>> + node = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "watchdog",
>> + CTLFLAG_RD, NULL, "Watchdog Statistics");
>> + cpsw_add_watchdog_sysctls(ctx, node, sc);
>> +}
>> +#endif
>> diff --git a/freebsd/sys/arm/ti/cpsw/if_cpswreg.h b/freebsd/sys/arm/ti/cpsw/if_cpswreg.h
>> new file mode 100644
>> index 0000000..46f8417
>> --- /dev/null
>> +++ b/freebsd/sys/arm/ti/cpsw/if_cpswreg.h
>> @@ -0,0 +1,137 @@
>> +/*-
>> + * Copyright (c) 2012 Damjan Marion <dmarion at Freebsd.org>
>> + * All rights reserved.
>> + *
>> + * 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.
>> + *
>> + * $FreeBSD$
>> + */
>> +
>> +#ifndef _IF_CPSWREG_H
>> +#define _IF_CPSWREG_H
>> +
>> +#define CPSW_SS_OFFSET 0x0000
>> +#define CPSW_SS_IDVER (CPSW_SS_OFFSET + 0x00)
>> +#define CPSW_SS_SOFT_RESET (CPSW_SS_OFFSET + 0x08)
>> +#define CPSW_SS_STAT_PORT_EN (CPSW_SS_OFFSET + 0x0C)
>> +#define CPSW_SS_PTYPE (CPSW_SS_OFFSET + 0x10)
>> +#define CPSW_SS_FLOW_CONTROL (CPSW_SS_OFFSET + 0x24)
>> +
>> +#define CPSW_PORT_OFFSET 0x0100
>> +#define CPSW_PORT_P_MAX_BLKS(p) (CPSW_PORT_OFFSET + 0x08 + ((p) * 0x100))
>> +#define CPSW_PORT_P_BLK_CNT(p) (CPSW_PORT_OFFSET + 0x0C + ((p) * 0x100))
>> +#define CPSW_PORT_P_TX_PRI_MAP(p) (CPSW_PORT_OFFSET + 0x118 + ((p-1) * 0x100))
>> +#define CPSW_PORT_P0_CPDMA_TX_PRI_MAP (CPSW_PORT_OFFSET + 0x01C)
>> +#define CPSW_PORT_P0_CPDMA_RX_CH_MAP (CPSW_PORT_OFFSET + 0x020)
>> +#define CPSW_PORT_P_SA_LO(p) (CPSW_PORT_OFFSET + 0x120 + ((p-1) * 0x100))
>> +#define CPSW_PORT_P_SA_HI(p) (CPSW_PORT_OFFSET + 0x124 + ((p-1) * 0x100))
>> +
>> +#define CPSW_CPDMA_OFFSET 0x0800
>> +#define CPSW_CPDMA_TX_CONTROL (CPSW_CPDMA_OFFSET + 0x04)
>> +#define CPSW_CPDMA_TX_TEARDOWN (CPSW_CPDMA_OFFSET + 0x08)
>> +#define CPSW_CPDMA_RX_CONTROL (CPSW_CPDMA_OFFSET + 0x14)
>> +#define CPSW_CPDMA_RX_TEARDOWN (CPSW_CPDMA_OFFSET + 0x18)
>> +#define CPSW_CPDMA_SOFT_RESET (CPSW_CPDMA_OFFSET + 0x1c)
>> +#define CPSW_CPDMA_DMACONTROL (CPSW_CPDMA_OFFSET + 0x20)
>> +#define CPSW_CPDMA_DMASTATUS (CPSW_CPDMA_OFFSET + 0x24)
>> +#define CPSW_CPDMA_RX_BUFFER_OFFSET (CPSW_CPDMA_OFFSET + 0x28)
>> +#define CPSW_CPDMA_TX_INTSTAT_RAW (CPSW_CPDMA_OFFSET + 0x80)
>> +#define CPSW_CPDMA_TX_INTSTAT_MASKED (CPSW_CPDMA_OFFSET + 0x84)
>> +#define CPSW_CPDMA_TX_INTMASK_SET (CPSW_CPDMA_OFFSET + 0x88)
>> +#define CPSW_CPDMA_TX_INTMASK_CLEAR (CPSW_CPDMA_OFFSET + 0x8C)
>> +#define CPSW_CPDMA_CPDMA_EOI_VECTOR (CPSW_CPDMA_OFFSET + 0x94)
>> +#define CPSW_CPDMA_RX_INTSTAT_RAW (CPSW_CPDMA_OFFSET + 0xA0)
>> +#define CPSW_CPDMA_RX_INTSTAT_MASKED (CPSW_CPDMA_OFFSET + 0xA4)
>> +#define CPSW_CPDMA_RX_INTMASK_SET (CPSW_CPDMA_OFFSET + 0xA8)
>> +#define CPSW_CPDMA_RX_INTMASK_CLEAR (CPSW_CPDMA_OFFSET + 0xAc)
>> +#define CPSW_CPDMA_DMA_INTSTAT_RAW (CPSW_CPDMA_OFFSET + 0xB0)
>> +#define CPSW_CPDMA_DMA_INTSTAT_MASKED (CPSW_CPDMA_OFFSET + 0xB4)
>> +#define CPSW_CPDMA_DMA_INTMASK_SET (CPSW_CPDMA_OFFSET + 0xB8)
>> +#define CPSW_CPDMA_DMA_INTMASK_CLEAR (CPSW_CPDMA_OFFSET + 0xBC)
>> +#define CPSW_CPDMA_RX_FREEBUFFER(p) (CPSW_CPDMA_OFFSET + 0x0e0 + ((p) * 0x04))
>> +
>> +#define CPSW_STATS_OFFSET 0x0900
>> +
>> +#define CPSW_STATERAM_OFFSET 0x0A00
>> +#define CPSW_CPDMA_TX_HDP(p) (CPSW_STATERAM_OFFSET + 0x00 + ((p) * 0x04))
>> +#define CPSW_CPDMA_RX_HDP(p) (CPSW_STATERAM_OFFSET + 0x20 + ((p) * 0x04))
>> +#define CPSW_CPDMA_TX_CP(p) (CPSW_STATERAM_OFFSET + 0x40 + ((p) * 0x04))
>> +#define CPSW_CPDMA_RX_CP(p) (CPSW_STATERAM_OFFSET + 0x60 + ((p) * 0x04))
>> +
>> +#define CPSW_CPTS_OFFSET 0x0C00
>> +
>> +#define CPSW_ALE_OFFSET 0x0D00
>> +#define CPSW_ALE_CONTROL (CPSW_ALE_OFFSET + 0x08)
>> +#define CPSW_ALE_TBLCTL (CPSW_ALE_OFFSET + 0x20)
>> +#define CPSW_ALE_TBLW2 (CPSW_ALE_OFFSET + 0x34)
>> +#define CPSW_ALE_TBLW1 (CPSW_ALE_OFFSET + 0x38)
>> +#define CPSW_ALE_TBLW0 (CPSW_ALE_OFFSET + 0x3C)
>> +#define CPSW_ALE_PORTCTL(p) (CPSW_ALE_OFFSET + 0x40 + ((p) * 0x04))
>> +
>> +/* SL1 is at 0x0D80, SL2 is at 0x0DC0 */
>> +#define CPSW_SL_OFFSET 0x0D80
>> +#define CPSW_SL_MACCONTROL(p) (CPSW_SL_OFFSET + (0x40 * (p)) + 0x04)
>> +#define CPSW_SL_MACSTATUS(p) (CPSW_SL_OFFSET + (0x40 * (p)) + 0x08)
>> +#define CPSW_SL_SOFT_RESET(p) (CPSW_SL_OFFSET + (0x40 * (p)) + 0x0C)
>> +#define CPSW_SL_RX_MAXLEN(p) (CPSW_SL_OFFSET + (0x40 * (p)) + 0x10)
>> +#define CPSW_SL_RX_PAUSE(p) (CPSW_SL_OFFSET + (0x40 * (p)) + 0x18)
>> +#define CPSW_SL_TX_PAUSE(p) (CPSW_SL_OFFSET + (0x40 * (p)) + 0x1C)
>> +#define CPSW_SL_RX_PRI_MAP(p) (CPSW_SL_OFFSET + (0x40 * (p)) + 0x24)
>> +
>> +#define MDIO_OFFSET 0x1000
>> +#define MDIOCONTROL (MDIO_OFFSET + 0x04)
>> +#define MDIOUSERACCESS0 (MDIO_OFFSET + 0x80)
>> +#define MDIOUSERPHYSEL0 (MDIO_OFFSET + 0x84)
>> +
>> +#define CPSW_WR_OFFSET 0x1200
>> +#define CPSW_WR_SOFT_RESET (CPSW_WR_OFFSET + 0x04)
>> +#define CPSW_WR_CONTROL (CPSW_WR_OFFSET + 0x08)
>> +#define CPSW_WR_INT_CONTROL (CPSW_WR_OFFSET + 0x0c)
>> +#define CPSW_WR_C_RX_THRESH_EN(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x10)
>> +#define CPSW_WR_C_RX_EN(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x14)
>> +#define CPSW_WR_C_TX_EN(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x18)
>> +#define CPSW_WR_C_MISC_EN(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x1C)
>> +#define CPSW_WR_C_RX_THRESH_STAT(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x40)
>> +#define CPSW_WR_C_RX_STAT(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x44)
>> +#define CPSW_WR_C_TX_STAT(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x48)
>> +#define CPSW_WR_C_MISC_STAT(p) (CPSW_WR_OFFSET + (0x10 * (p)) + 0x4C)
>> +
>> +#define CPSW_CPPI_RAM_OFFSET 0x2000
>> +#define CPSW_CPPI_RAM_SIZE 0x2000
>> +
>> +#define CPDMA_BD_SOP (1<<15)
>> +#define CPDMA_BD_EOP (1<<14)
>> +#define CPDMA_BD_OWNER (1<<13)
>> +#define CPDMA_BD_EOQ (1<<12)
>> +#define CPDMA_BD_TDOWNCMPLT (1<<11)
>> +#define CPDMA_BD_PKT_ERR_MASK (3<< 4)
>> +
>> +struct cpsw_cpdma_bd {
>> + volatile uint32_t next;
>> + volatile uint32_t bufptr;
>> + volatile uint16_t buflen;
>> + volatile uint16_t bufoff;
>> + volatile uint16_t pktlen;
>> + volatile uint16_t flags;
>> +};
>> +
>> +#endif /*_IF_CPSWREG_H */
>> diff --git a/freebsd/sys/arm/ti/cpsw/if_cpswvar.h b/freebsd/sys/arm/ti/cpsw/if_cpswvar.h
>> new file mode 100644
>> index 0000000..7ca640f
>> --- /dev/null
>> +++ b/freebsd/sys/arm/ti/cpsw/if_cpswvar.h
>> @@ -0,0 +1,126 @@
>> +/*-
>> + * Copyright (c) 2012 Damjan Marion <dmarion at Freebsd.org>
>> + * All rights reserved.
>> + *
>> + * 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.
>> + *
>> + * $FreeBSD$
>> + */
>> +
>> +#ifndef _IF_CPSWVAR_H
>> +#define _IF_CPSWVAR_H
>> +
>> +#define CPSW_INTR_COUNT 4
>> +
>> +/* MII BUS */
>> +#define CPSW_MIIBUS_RETRIES 5
>> +#define CPSW_MIIBUS_DELAY 1000
>> +
>> +#define CPSW_MAX_ALE_ENTRIES 1024
>> +
>> +#define CPSW_SYSCTL_COUNT 34
>> +
>> +struct cpsw_slot {
>> + uint32_t bd_offset; /* Offset of corresponding BD within CPPI RAM. */
>> + bus_dmamap_t dmamap;
>> + struct mbuf *mbuf;
>> + STAILQ_ENTRY(cpsw_slot) next;
>> +};
>> +STAILQ_HEAD(cpsw_slots, cpsw_slot);
>> +
>> +struct cpsw_queue {
>> + struct mtx lock;
>> + int running;
>> + struct cpsw_slots active;
>> + struct cpsw_slots avail;
>> + uint32_t queue_adds; /* total bufs added */
>> + uint32_t queue_removes; /* total bufs removed */
>> + uint32_t queue_removes_at_last_tick; /* Used by watchdog */
>> + int queue_slots;
>> + int active_queue_len;
>> + int max_active_queue_len;
>> + int avail_queue_len;
>> + int max_avail_queue_len;
>> + int longest_chain; /* Largest # segments in a single packet. */
>> + int hdp_offset;
>> +};
>> +
>> +struct cpsw_softc {
>> + struct ifnet *ifp;
>> +#ifndef __rtems__
>> + phandle_t node;
>> +#endif
>> + device_t dev;
>> + struct bintime attach_uptime; /* system uptime when attach happened. */
>> + struct bintime init_uptime; /* system uptime when init happened. */
>> +
>> + /* TODO: We should set up a child structure for each port;
>> + store mac, phy information, etc, in that structure. */
>> + uint8_t mac_addr[ETHER_ADDR_LEN];
>> +
>> + device_t miibus;
>> + struct mii_data *mii;
>> + /* We expect 1 memory resource and 4 interrupts from the device tree. */
>> + struct resource *res[1 + CPSW_INTR_COUNT];
>> +
>> + /* Interrupts get recorded here as we initialize them. */
>> + /* Interrupt teardown just walks this list. */
>> + struct {
>> + struct resource *res;
>> + void *ih_cookie;
>> + const char *description;
>> + } interrupts[CPSW_INTR_COUNT];
>> + int interrupt_count;
>> +
>> + uint32_t cpsw_if_flags;
>> + int cpsw_media_status;
>> +
>> + struct {
>> + int resets;
>> + int timer;
>> + struct callout callout;
>> + } watchdog;
>> +
>> + bus_dma_tag_t mbuf_dtag;
>> +
>> + /* An mbuf full of nulls for TX padding. */
>> + bus_dmamap_t null_mbuf_dmamap;
>> + struct mbuf *null_mbuf;
>> + bus_addr_t null_mbuf_paddr;
>> +
>> + /* RX and TX buffer tracking */
>> + struct cpsw_queue rx, tx;
>> +
>> + /* 64-bit versions of 32-bit hardware statistics counters */
>> + uint64_t shadow_stats[CPSW_SYSCTL_COUNT];
>> +
>> + /* CPPI STATERAM has 512 slots for building TX/RX queues. */
>> + /* TODO: Size here supposedly varies with different versions
>> + of the controller. Check DaVinci specs and find a good
>> + way to adjust this. One option is to have a separate
>> + Device Tree parameter for number slots; another option
>> + is to calculate it from the memory size in the device tree. */
>> + struct cpsw_slot _slots[CPSW_CPPI_RAM_SIZE / sizeof(struct cpsw_cpdma_bd)];
>> + struct cpsw_slots avail;
>> +};
>> +
>> +#endif /*_IF_CPSWVAR_H */
>> diff --git a/freebsd/sys/dev/mii/smscphy.c b/freebsd/sys/dev/mii/smscphy.c
>> new file mode 100644
>> index 0000000..85893b2
>> --- /dev/null
>> +++ b/freebsd/sys/dev/mii/smscphy.c
>> @@ -0,0 +1,227 @@
>> +#include <machine/rtems-bsd-kernel-space.h>
>> +
>> +/*-
>> + * Copyright (c) 2006 Benno Rice. All rights reserved.
>> + *
>> + * 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 ``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 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.
>> + */
>> +
>> +#include <sys/cdefs.h>
>> +__FBSDID("$FreeBSD$");
>> +
>> +/*
>> + * Driver for the SMSC LAN8710A
>> + */
>> +
>> +#include <sys/param.h>
>> +#include <sys/systm.h>
>> +#include <sys/kernel.h>
>> +#include <sys/socket.h>
>> +#include <sys/errno.h>
>> +#include <sys/module.h>
>> +#include <sys/bus.h>
>> +#include <sys/malloc.h>
>> +
>> +#include <machine/bus.h>
>> +
>> +#include <net/if.h>
>> +#include <net/if_media.h>
>> +
>> +#include <dev/mii/mii.h>
>> +#include <dev/mii/miivar.h>
>> +#include "miidevs.h"
>> +
>> +#include "miibus_if.h"
>> +
>> +static int smscphy_probe(device_t);
>> +static int smscphy_attach(device_t);
>> +
>> +static int smscphy_service(struct mii_softc *, struct mii_data *, int);
>> +static void smscphy_auto(struct mii_softc *, int);
>> +static void smscphy_status(struct mii_softc *);
>> +
>> +static device_method_t smscphy_methods[] = {
>> + /* device interface */
>> + DEVMETHOD(device_probe, smscphy_probe),
>> + DEVMETHOD(device_attach, smscphy_attach),
>> + DEVMETHOD(device_detach, mii_phy_detach),
>> + DEVMETHOD(device_shutdown, bus_generic_shutdown),
>> + DEVMETHOD_END
>> +};
>> +
>> +static devclass_t smscphy_devclass;
>> +
>> +static driver_t smscphy_driver = {
>> + "smscphy",
>> + smscphy_methods,
>> + sizeof(struct mii_softc)
>> +};
>> +
>> +DRIVER_MODULE(smscphy, miibus, smscphy_driver, smscphy_devclass, 0, 0);
>> +
>> +static const struct mii_phydesc smscphys[] = {
>> + MII_PHY_DESC(SMC, LAN8710A),
>> + MII_PHY_END
>> +};
>> +
>> +static const struct mii_phy_funcs smscphy_funcs = {
>> + smscphy_service,
>> + smscphy_status,
>> + mii_phy_reset
>> +};
>> +
>> +static int
>> +smscphy_probe(device_t dev)
>> +{
>> +
>> + return (mii_phy_dev_probe(dev, smscphys, BUS_PROBE_DEFAULT));
>> +}
>> +
>> +static int
>> +smscphy_attach(device_t dev)
>> +{
>> + struct mii_softc *sc;
>> + const struct mii_phy_funcs *mpf;
>> +
>> + sc = device_get_softc(dev);
>> + mpf = &smscphy_funcs;
>> + mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, mpf, 1);
>> + mii_phy_setmedia(sc);
>> +
>> + return (0);
>> +}
>> +
>> +static int
>> +smscphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
>> +{
>> + struct ifmedia_entry *ife;
>> + int reg;
>> +
>> + ife = mii->mii_media.ifm_cur;
>> +
>> + switch (cmd) {
>> + case MII_POLLSTAT:
>> + break;
>> +
>> + case MII_MEDIACHG:
>> + switch (IFM_SUBTYPE(ife->ifm_media)) {
>> + case IFM_AUTO:
>> + smscphy_auto(sc, ife->ifm_media);
>> + break;
>> +
>> + default:
>> + mii_phy_setmedia(sc);
>> + break;
>> + }
>> +
>> + break;
>> +
>> + case MII_TICK:
>> + if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
>> + break;
>> + }
>> +
>> + /* I have no idea why BMCR_ISO gets set. */
>> + reg = PHY_READ(sc, MII_BMCR);
>> + if (reg & BMCR_ISO) {
>> + PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
>> + }
>> +
>> + reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
>> + if (reg & BMSR_LINK) {
>> + sc->mii_ticks = 0;
>> + break;
>> + }
>> +
>> + if (++sc->mii_ticks <= MII_ANEGTICKS) {
>> + break;
>> + }
>> +
>> + sc->mii_ticks = 0;
>> + PHY_RESET(sc);
>> + smscphy_auto(sc, ife->ifm_media);
>> + break;
>> + }
>> +
>> + /* Update the media status. */
>> + PHY_STATUS(sc);
>> +
>> + /* Callback if something changed. */
>> + mii_phy_update(sc, cmd);
>> + return (0);
>> +}
>> +
>> +static void
>> +smscphy_auto(struct mii_softc *sc, int media)
>> +{
>> + uint16_t anar;
>> +
>> + anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA;
>> + if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
>> + anar |= ANAR_FC;
>> + PHY_WRITE(sc, MII_ANAR, anar);
>> + /* Apparently this helps. */
>> + anar = PHY_READ(sc, MII_ANAR);
>> + PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
>> +}
>> +
>> +static void
>> +smscphy_status(struct mii_softc *sc)
>> +{
>> + struct mii_data *mii;
>> + uint32_t bmcr, bmsr, status;
>> +
>> + mii = sc->mii_pdata;
>> + mii->mii_media_status = IFM_AVALID;
>> + mii->mii_media_active = IFM_ETHER;
>> +
>> + bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
>> + if ((bmsr & BMSR_LINK) != 0)
>> + mii->mii_media_status |= IFM_ACTIVE;
>> +
>> + bmcr = PHY_READ(sc, MII_BMCR);
>> + if ((bmcr & BMCR_ISO) != 0) {
>> + mii->mii_media_active |= IFM_NONE;
>> + mii->mii_media_status = 0;
>> + return;
>> + }
>> +
>> + if ((bmcr & BMCR_LOOP) != 0)
>> + mii->mii_media_active |= IFM_LOOP;
>> +
>> + if ((bmcr & BMCR_AUTOEN) != 0) {
>> + if ((bmsr & BMSR_ACOMP) == 0) {
>> + /* Erg, still trying, I guess... */
>> + mii->mii_media_active |= IFM_NONE;
>> + return;
>> + }
>> + }
>> +
>> + status = PHY_READ(sc, 0x1F);
>> + if (status & 0x0008)
>> + mii->mii_media_active |= IFM_100_TX;
>> + else
>> + mii->mii_media_active |= IFM_10_T;
>> + if (status & 0x0010)
>> + mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
>> + else
>> + mii->mii_media_active |= IFM_HDX;
>> +}
>> diff --git a/rtemsbsd/include/bsp/nexus-devices.h b/rtemsbsd/include/bsp/nexus-devices.h
>> index fcd8775..5b3e811 100644
>> --- a/rtemsbsd/include/bsp/nexus-devices.h
>> +++ b/rtemsbsd/include/bsp/nexus-devices.h
>> @@ -52,6 +52,40 @@ static const rtems_bsd_device_resource smc0_res[] = {
>> RTEMS_BSD_DEFINE_NEXUS_DEVICE(smc, 0, RTEMS_ARRAY_SIZE(smc0_res),
>> &smc0_res[0]);
>>
>> +#elif defined(LIBBSP_ARM_BEAGLE_BSP_H)
>> +
>> +static const rtems_bsd_device_resource cpsw0_res[] = {
>> + {
>> + .type = RTEMS_BSD_RES_MEMORY,
>> + .start_request = 0,
>> + .start_actual = 0x4a100000
>> + }, {
>> + .type = RTEMS_BSD_RES_IRQ,
>> + .start_request = 0,
>> + .start_actual = 0x28
>> + },
>> + {
>> + .type = RTEMS_BSD_RES_IRQ,
>> + .start_request = 1,
>> + .start_actual = 0x29
>> + },
>> + {
>> + .type = RTEMS_BSD_RES_IRQ,
>> + .start_request = 2,
>> + .start_actual = 0x2a
>> + },
>> + {
>> + .type = RTEMS_BSD_RES_IRQ,
>> + .start_request = 3,
>> + .start_actual = 0x2b
>> + }
>> +};
>> +
>> +RTEMS_BSD_DEFINE_NEXUS_DEVICE(cpsw, 0, RTEMS_ARRAY_SIZE(cpsw0_res),
>> + &cpsw0_res[0]);
>> +
>> +SYSINIT_DRIVER_REFERENCE(smscphy, miibus);
>> +
>> #elif defined(__GENMCF548X_BSP_H)
>>
>> RTEMS_BSD_DEFINE_NEXUS_DEVICE(fec, 0, 0, NULL);
>> diff --git a/rtemsbsd/include/machine/rtems-bsd-cache.h b/rtemsbsd/include/machine/rtems-bsd-cache.h
>> index b8c4ce7..b8914ec 100644
>> --- a/rtemsbsd/include/machine/rtems-bsd-cache.h
>> +++ b/rtemsbsd/include/machine/rtems-bsd-cache.h
>> @@ -45,7 +45,7 @@
>> #if defined(LIBBSP_ARM_LPC24XX_BSP_H)
>> /* No cache */
>> #elif defined(LIBBSP_ARM_ALTERA_CYCLONE_V_BSP_H) || \
>> - defined(LIBBSP_ARM_XILINX_ZYNQ_BSP_H)
>> + defined(LIBBSP_ARM_XILINX_ZYNQ_BSP_H) || defined(LIBBSP_ARM_BEAGLE_BSP_H)
>> /* With cache, no coherency support in hardware */
>> #define CPU_DATA_CACHE_ALIGNMENT 32
>> #elif defined(LIBBSP_ARM_LPC32XX_BSP_H)
>> diff --git a/testsuite/include/rtems/bsd/test/network-config.h.in b/testsuite/include/rtems/bsd/test/network-config.h.in
>> index 30a9c5a..3169e76 100644
>> --- a/testsuite/include/rtems/bsd/test/network-config.h.in
>> +++ b/testsuite/include/rtems/bsd/test/network-config.h.in
>> @@ -42,6 +42,8 @@
>> #define NET_CFG_INTERFACE_0 "cgem0"
>> #elif defined(__GENMCF548X_BSP_H)
>> #define NET_CFG_INTERFACE_0 "fec0"
>> +#elif defined(LIBBSP_ARM_BEAGLE_BSP_H)
>> + #define NET_CFG_INTERFACE_0 "cpsw0"
>> #else
>> #define NET_CFG_INTERFACE_0 "lo0"
>> #endif
>> --
>> 1.9.1
>>
>> _______________________________________________
>> devel mailing list
>> devel at rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
--
ragu
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