aboutsummaryrefslogtreecommitdiff
path: root/sys/dev/neta/if_mvneta.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/dev/neta/if_mvneta.c')
-rw-r--r--sys/dev/neta/if_mvneta.c3570
1 files changed, 3570 insertions, 0 deletions
diff --git a/sys/dev/neta/if_mvneta.c b/sys/dev/neta/if_mvneta.c
new file mode 100644
index 000000000000..84b3420f28de
--- /dev/null
+++ b/sys/dev/neta/if_mvneta.c
@@ -0,0 +1,3570 @@
+/*
+ * Copyright (c) 2017 Stormshield.
+ * Copyright (c) 2017 Semihalf.
+ * 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 "opt_platform.h"
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/endian.h>
+#include <sys/mbuf.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/socket.h>
+#include <sys/sysctl.h>
+#include <sys/smp.h>
+#include <sys/taskqueue.h>
+#ifdef MVNETA_KTR
+#include <sys/ktr.h>
+#endif
+
+#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_vlan_var.h>
+
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp_lro.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>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/mdio/mdio.h>
+
+#include <arm/mv/mvreg.h>
+#include <arm/mv/mvvar.h>
+#include <arm/mv/mvwin.h>
+
+#include "if_mvnetareg.h"
+#include "if_mvnetavar.h"
+
+#include "miibus_if.h"
+#include "mdio_if.h"
+
+#ifdef MVNETA_DEBUG
+#define STATIC /* nothing */
+#else
+#define STATIC static
+#endif
+
+#define DASSERT(x) KASSERT((x), (#x))
+
+/* Device Register Initialization */
+STATIC int mvneta_initreg(struct ifnet *);
+
+/* Descriptor Ring Control for each of queues */
+STATIC int mvneta_ring_alloc_rx_queue(struct mvneta_softc *, int);
+STATIC int mvneta_ring_alloc_tx_queue(struct mvneta_softc *, int);
+STATIC void mvneta_ring_dealloc_rx_queue(struct mvneta_softc *, int);
+STATIC void mvneta_ring_dealloc_tx_queue(struct mvneta_softc *, int);
+STATIC int mvneta_ring_init_rx_queue(struct mvneta_softc *, int);
+STATIC int mvneta_ring_init_tx_queue(struct mvneta_softc *, int);
+STATIC void mvneta_ring_flush_rx_queue(struct mvneta_softc *, int);
+STATIC void mvneta_ring_flush_tx_queue(struct mvneta_softc *, int);
+STATIC void mvneta_dmamap_cb(void *, bus_dma_segment_t *, int, int);
+STATIC int mvneta_dma_create(struct mvneta_softc *);
+
+/* Rx/Tx Queue Control */
+STATIC int mvneta_rx_queue_init(struct ifnet *, int);
+STATIC int mvneta_tx_queue_init(struct ifnet *, int);
+STATIC int mvneta_rx_queue_enable(struct ifnet *, int);
+STATIC int mvneta_tx_queue_enable(struct ifnet *, int);
+STATIC void mvneta_rx_lockq(struct mvneta_softc *, int);
+STATIC void mvneta_rx_unlockq(struct mvneta_softc *, int);
+STATIC void mvneta_tx_lockq(struct mvneta_softc *, int);
+STATIC void mvneta_tx_unlockq(struct mvneta_softc *, int);
+
+/* Interrupt Handlers */
+STATIC void mvneta_disable_intr(struct mvneta_softc *);
+STATIC void mvneta_enable_intr(struct mvneta_softc *);
+STATIC void mvneta_rxtxth_intr(void *);
+STATIC int mvneta_misc_intr(struct mvneta_softc *);
+STATIC void mvneta_tick(void *);
+/* struct ifnet and mii callbacks*/
+STATIC int mvneta_xmitfast_locked(struct mvneta_softc *, int, struct mbuf **);
+STATIC int mvneta_xmit_locked(struct mvneta_softc *, int);
+#ifdef MVNETA_MULTIQUEUE
+STATIC int mvneta_transmit(struct ifnet *, struct mbuf *);
+#else /* !MVNETA_MULTIQUEUE */
+STATIC void mvneta_start(struct ifnet *);
+#endif
+STATIC void mvneta_qflush(struct ifnet *);
+STATIC void mvneta_tx_task(void *, int);
+STATIC int mvneta_ioctl(struct ifnet *, u_long, caddr_t);
+STATIC void mvneta_init(void *);
+STATIC void mvneta_init_locked(void *);
+STATIC void mvneta_stop(struct mvneta_softc *);
+STATIC void mvneta_stop_locked(struct mvneta_softc *);
+STATIC int mvneta_mediachange(struct ifnet *);
+STATIC void mvneta_mediastatus(struct ifnet *, struct ifmediareq *);
+STATIC void mvneta_portup(struct mvneta_softc *);
+STATIC void mvneta_portdown(struct mvneta_softc *);
+
+/* Link State Notify */
+STATIC void mvneta_update_autoneg(struct mvneta_softc *, int);
+STATIC int mvneta_update_media(struct mvneta_softc *, int);
+STATIC void mvneta_adjust_link(struct mvneta_softc *);
+STATIC void mvneta_update_eee(struct mvneta_softc *);
+STATIC void mvneta_update_fc(struct mvneta_softc *);
+STATIC void mvneta_link_isr(struct mvneta_softc *);
+STATIC void mvneta_linkupdate(struct mvneta_softc *, boolean_t);
+STATIC void mvneta_linkup(struct mvneta_softc *);
+STATIC void mvneta_linkdown(struct mvneta_softc *);
+STATIC void mvneta_linkreset(struct mvneta_softc *);
+
+/* Tx Subroutines */
+STATIC int mvneta_tx_queue(struct mvneta_softc *, struct mbuf **, int);
+STATIC void mvneta_tx_set_csumflag(struct ifnet *,
+ struct mvneta_tx_desc *, struct mbuf *);
+STATIC void mvneta_tx_queue_complete(struct mvneta_softc *, int);
+STATIC void mvneta_tx_drain(struct mvneta_softc *);
+
+/* Rx Subroutines */
+STATIC int mvneta_rx(struct mvneta_softc *, int, int);
+STATIC void mvneta_rx_queue(struct mvneta_softc *, int, int);
+STATIC void mvneta_rx_queue_refill(struct mvneta_softc *, int);
+STATIC void mvneta_rx_set_csumflag(struct ifnet *,
+ struct mvneta_rx_desc *, struct mbuf *);
+STATIC void mvneta_rx_buf_free(struct mvneta_softc *, struct mvneta_buf *);
+
+/* MAC address filter */
+STATIC void mvneta_filter_setup(struct mvneta_softc *);
+
+/* sysctl(9) */
+STATIC int sysctl_read_mib(SYSCTL_HANDLER_ARGS);
+STATIC int sysctl_clear_mib(SYSCTL_HANDLER_ARGS);
+STATIC int sysctl_set_queue_rxthtime(SYSCTL_HANDLER_ARGS);
+STATIC void sysctl_mvneta_init(struct mvneta_softc *);
+
+/* MIB */
+STATIC void mvneta_clear_mib(struct mvneta_softc *);
+STATIC void mvneta_update_mib(struct mvneta_softc *);
+
+/* Switch */
+STATIC boolean_t mvneta_has_switch(device_t);
+
+#define mvneta_sc_lock(sc) mtx_lock(&sc->mtx)
+#define mvneta_sc_unlock(sc) mtx_unlock(&sc->mtx)
+
+STATIC struct mtx mii_mutex;
+STATIC int mii_init = 0;
+
+/* Device */
+STATIC int mvneta_detach(device_t);
+/* MII */
+STATIC int mvneta_miibus_readreg(device_t, int, int);
+STATIC int mvneta_miibus_writereg(device_t, int, int, int);
+
+static device_method_t mvneta_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_detach, mvneta_detach),
+ /* MII interface */
+ DEVMETHOD(miibus_readreg, mvneta_miibus_readreg),
+ DEVMETHOD(miibus_writereg, mvneta_miibus_writereg),
+ /* MDIO interface */
+ DEVMETHOD(mdio_readreg, mvneta_miibus_readreg),
+ DEVMETHOD(mdio_writereg, mvneta_miibus_writereg),
+
+ /* End */
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_0(mvneta, mvneta_driver, mvneta_methods, sizeof(struct mvneta_softc));
+
+DRIVER_MODULE(miibus, mvneta, miibus_driver, miibus_devclass, 0, 0);
+DRIVER_MODULE(mdio, mvneta, mdio_driver, mdio_devclass, 0, 0);
+MODULE_DEPEND(mvneta, mdio, 1, 1, 1);
+MODULE_DEPEND(mvneta, ether, 1, 1, 1);
+MODULE_DEPEND(mvneta, miibus, 1, 1, 1);
+MODULE_DEPEND(mvneta, mvxpbm, 1, 1, 1);
+
+/*
+ * List of MIB register and names
+ */
+enum mvneta_mib_idx
+{
+ MVNETA_MIB_RX_GOOD_OCT_IDX,
+ MVNETA_MIB_RX_BAD_OCT_IDX,
+ MVNETA_MIB_TX_MAC_TRNS_ERR_IDX,
+ MVNETA_MIB_RX_GOOD_FRAME_IDX,
+ MVNETA_MIB_RX_BAD_FRAME_IDX,
+ MVNETA_MIB_RX_BCAST_FRAME_IDX,
+ MVNETA_MIB_RX_MCAST_FRAME_IDX,
+ MVNETA_MIB_RX_FRAME64_OCT_IDX,
+ MVNETA_MIB_RX_FRAME127_OCT_IDX,
+ MVNETA_MIB_RX_FRAME255_OCT_IDX,
+ MVNETA_MIB_RX_FRAME511_OCT_IDX,
+ MVNETA_MIB_RX_FRAME1023_OCT_IDX,
+ MVNETA_MIB_RX_FRAMEMAX_OCT_IDX,
+ MVNETA_MIB_TX_GOOD_OCT_IDX,
+ MVNETA_MIB_TX_GOOD_FRAME_IDX,
+ MVNETA_MIB_TX_EXCES_COL_IDX,
+ MVNETA_MIB_TX_MCAST_FRAME_IDX,
+ MVNETA_MIB_TX_BCAST_FRAME_IDX,
+ MVNETA_MIB_TX_MAC_CTL_ERR_IDX,
+ MVNETA_MIB_FC_SENT_IDX,
+ MVNETA_MIB_FC_GOOD_IDX,
+ MVNETA_MIB_FC_BAD_IDX,
+ MVNETA_MIB_PKT_UNDERSIZE_IDX,
+ MVNETA_MIB_PKT_FRAGMENT_IDX,
+ MVNETA_MIB_PKT_OVERSIZE_IDX,
+ MVNETA_MIB_PKT_JABBER_IDX,
+ MVNETA_MIB_MAC_RX_ERR_IDX,
+ MVNETA_MIB_MAC_CRC_ERR_IDX,
+ MVNETA_MIB_MAC_COL_IDX,
+ MVNETA_MIB_MAC_LATE_COL_IDX,
+};
+
+STATIC struct mvneta_mib_def {
+ uint32_t regnum;
+ int reg64;
+ const char *sysctl_name;
+ const char *desc;
+} mvneta_mib_list[] = {
+ [MVNETA_MIB_RX_GOOD_OCT_IDX] = {MVNETA_MIB_RX_GOOD_OCT, 1,
+ "rx_good_oct", "Good Octets Rx"},
+ [MVNETA_MIB_RX_BAD_OCT_IDX] = {MVNETA_MIB_RX_BAD_OCT, 0,
+ "rx_bad_oct", "Bad Octets Rx"},
+ [MVNETA_MIB_TX_MAC_TRNS_ERR_IDX] = {MVNETA_MIB_TX_MAC_TRNS_ERR, 0,
+ "tx_mac_err", "MAC Transmit Error"},
+ [MVNETA_MIB_RX_GOOD_FRAME_IDX] = {MVNETA_MIB_RX_GOOD_FRAME, 0,
+ "rx_good_frame", "Good Frames Rx"},
+ [MVNETA_MIB_RX_BAD_FRAME_IDX] = {MVNETA_MIB_RX_BAD_FRAME, 0,
+ "rx_bad_frame", "Bad Frames Rx"},
+ [MVNETA_MIB_RX_BCAST_FRAME_IDX] = {MVNETA_MIB_RX_BCAST_FRAME, 0,
+ "rx_bcast_frame", "Broadcast Frames Rx"},
+ [MVNETA_MIB_RX_MCAST_FRAME_IDX] = {MVNETA_MIB_RX_MCAST_FRAME, 0,
+ "rx_mcast_frame", "Multicast Frames Rx"},
+ [MVNETA_MIB_RX_FRAME64_OCT_IDX] = {MVNETA_MIB_RX_FRAME64_OCT, 0,
+ "rx_frame_1_64", "Frame Size 1 - 64"},
+ [MVNETA_MIB_RX_FRAME127_OCT_IDX] = {MVNETA_MIB_RX_FRAME127_OCT, 0,
+ "rx_frame_65_127", "Frame Size 65 - 127"},
+ [MVNETA_MIB_RX_FRAME255_OCT_IDX] = {MVNETA_MIB_RX_FRAME255_OCT, 0,
+ "rx_frame_128_255", "Frame Size 128 - 255"},
+ [MVNETA_MIB_RX_FRAME511_OCT_IDX] = {MVNETA_MIB_RX_FRAME511_OCT, 0,
+ "rx_frame_256_511", "Frame Size 256 - 511"},
+ [MVNETA_MIB_RX_FRAME1023_OCT_IDX] = {MVNETA_MIB_RX_FRAME1023_OCT, 0,
+ "rx_frame_512_1023", "Frame Size 512 - 1023"},
+ [MVNETA_MIB_RX_FRAMEMAX_OCT_IDX] = {MVNETA_MIB_RX_FRAMEMAX_OCT, 0,
+ "rx_fame_1024_max", "Frame Size 1024 - Max"},
+ [MVNETA_MIB_TX_GOOD_OCT_IDX] = {MVNETA_MIB_TX_GOOD_OCT, 1,
+ "tx_good_oct", "Good Octets Tx"},
+ [MVNETA_MIB_TX_GOOD_FRAME_IDX] = {MVNETA_MIB_TX_GOOD_FRAME, 0,
+ "tx_good_frame", "Good Frames Tx"},
+ [MVNETA_MIB_TX_EXCES_COL_IDX] = {MVNETA_MIB_TX_EXCES_COL, 0,
+ "tx_exces_collision", "Excessive Collision"},
+ [MVNETA_MIB_TX_MCAST_FRAME_IDX] = {MVNETA_MIB_TX_MCAST_FRAME, 0,
+ "tx_mcast_frame", "Multicast Frames Tx"},
+ [MVNETA_MIB_TX_BCAST_FRAME_IDX] = {MVNETA_MIB_TX_BCAST_FRAME, 0,
+ "tx_bcast_frame", "Broadcast Frames Tx"},
+ [MVNETA_MIB_TX_MAC_CTL_ERR_IDX] = {MVNETA_MIB_TX_MAC_CTL_ERR, 0,
+ "tx_mac_ctl_err", "Unknown MAC Control"},
+ [MVNETA_MIB_FC_SENT_IDX] = {MVNETA_MIB_FC_SENT, 0,
+ "fc_tx", "Flow Control Tx"},
+ [MVNETA_MIB_FC_GOOD_IDX] = {MVNETA_MIB_FC_GOOD, 0,
+ "fc_rx_good", "Good Flow Control Rx"},
+ [MVNETA_MIB_FC_BAD_IDX] = {MVNETA_MIB_FC_BAD, 0,
+ "fc_rx_bad", "Bad Flow Control Rx"},
+ [MVNETA_MIB_PKT_UNDERSIZE_IDX] = {MVNETA_MIB_PKT_UNDERSIZE, 0,
+ "pkt_undersize", "Undersized Packets Rx"},
+ [MVNETA_MIB_PKT_FRAGMENT_IDX] = {MVNETA_MIB_PKT_FRAGMENT, 0,
+ "pkt_fragment", "Fragmented Packets Rx"},
+ [MVNETA_MIB_PKT_OVERSIZE_IDX] = {MVNETA_MIB_PKT_OVERSIZE, 0,
+ "pkt_oversize", "Oversized Packets Rx"},
+ [MVNETA_MIB_PKT_JABBER_IDX] = {MVNETA_MIB_PKT_JABBER, 0,
+ "pkt_jabber", "Jabber Packets Rx"},
+ [MVNETA_MIB_MAC_RX_ERR_IDX] = {MVNETA_MIB_MAC_RX_ERR, 0,
+ "mac_rx_err", "MAC Rx Errors"},
+ [MVNETA_MIB_MAC_CRC_ERR_IDX] = {MVNETA_MIB_MAC_CRC_ERR, 0,
+ "mac_crc_err", "MAC CRC Errors"},
+ [MVNETA_MIB_MAC_COL_IDX] = {MVNETA_MIB_MAC_COL, 0,
+ "mac_collision", "MAC Collision"},
+ [MVNETA_MIB_MAC_LATE_COL_IDX] = {MVNETA_MIB_MAC_LATE_COL, 0,
+ "mac_late_collision", "MAC Late Collision"},
+};
+
+static struct resource_spec res_spec[] = {
+ { SYS_RES_MEMORY, 0, RF_ACTIVE },
+ { SYS_RES_IRQ, 0, RF_ACTIVE },
+ { -1, 0}
+};
+
+static struct {
+ driver_intr_t *handler;
+ char * description;
+} mvneta_intrs[] = {
+ { mvneta_rxtxth_intr, "MVNETA aggregated interrupt" },
+};
+
+static int
+mvneta_set_mac_address(struct mvneta_softc *sc, uint8_t *addr)
+{
+ unsigned int mac_h;
+ unsigned int mac_l;
+
+ mac_l = (addr[4] << 8) | (addr[5]);
+ mac_h = (addr[0] << 24) | (addr[1] << 16) |
+ (addr[2] << 8) | (addr[3] << 0);
+
+ MVNETA_WRITE(sc, MVNETA_MACAL, mac_l);
+ MVNETA_WRITE(sc, MVNETA_MACAH, mac_h);
+ return (0);
+}
+
+static int
+mvneta_get_mac_address(struct mvneta_softc *sc, uint8_t *addr)
+{
+ uint32_t mac_l, mac_h;
+
+#ifdef FDT
+ if (mvneta_fdt_mac_address(sc, addr) == 0)
+ return (0);
+#endif
+ /*
+ * Fall back -- use the currently programmed address.
+ */
+ mac_l = MVNETA_READ(sc, MVNETA_MACAL);
+ mac_h = MVNETA_READ(sc, MVNETA_MACAH);
+ if (mac_l == 0 && mac_h == 0) {
+ /*
+ * Generate pseudo-random MAC.
+ * Set lower part to random number | unit number.
+ */
+ mac_l = arc4random() & ~0xff;
+ mac_l |= device_get_unit(sc->dev) & 0xff;
+ mac_h = arc4random();
+ mac_h &= ~(3 << 24); /* Clear multicast and LAA bits */
+ if (bootverbose) {
+ device_printf(sc->dev,
+ "Could not acquire MAC address. "
+ "Using randomized one.\n");
+ }
+ }
+
+ addr[0] = (mac_h & 0xff000000) >> 24;
+ addr[1] = (mac_h & 0x00ff0000) >> 16;
+ addr[2] = (mac_h & 0x0000ff00) >> 8;
+ addr[3] = (mac_h & 0x000000ff);
+ addr[4] = (mac_l & 0x0000ff00) >> 8;
+ addr[5] = (mac_l & 0x000000ff);
+ return (0);
+}
+
+STATIC boolean_t
+mvneta_has_switch(device_t self)
+{
+ phandle_t node, switch_node, switch_eth, switch_eth_handle;
+
+ node = ofw_bus_get_node(self);
+ switch_node =
+ ofw_bus_find_compatible(OF_finddevice("/"), "marvell,dsa");
+ switch_eth = 0;
+
+ OF_getencprop(switch_node, "dsa,ethernet",
+ (void*)&switch_eth_handle, sizeof(switch_eth_handle));
+
+ if (switch_eth_handle > 0)
+ switch_eth = OF_node_from_xref(switch_eth_handle);
+
+ /* Return true if dsa,ethernet cell points to us */
+ return (node == switch_eth);
+}
+
+STATIC int
+mvneta_dma_create(struct mvneta_softc *sc)
+{
+ size_t maxsize, maxsegsz;
+ size_t q;
+ int error;
+
+ /*
+ * Create Tx DMA
+ */
+ maxsize = maxsegsz = sizeof(struct mvneta_tx_desc) * MVNETA_TX_RING_CNT;
+
+ error = bus_dma_tag_create(
+ bus_get_dma_tag(sc->dev), /* parent */
+ 16, 0, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filtfunc, filtfuncarg */
+ maxsize, /* maxsize */
+ 1, /* nsegments */
+ maxsegsz, /* maxsegsz */
+ 0, /* flags */
+ NULL, NULL, /* lockfunc, lockfuncarg */
+ &sc->tx_dtag); /* dmat */
+ if (error != 0) {
+ device_printf(sc->dev,
+ "Failed to create DMA tag for Tx descriptors.\n");
+ goto fail;
+ }
+ 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 */
+ MVNETA_PACKET_SIZE, /* maxsize */
+ MVNETA_TX_SEGLIMIT, /* nsegments */
+ MVNETA_PACKET_SIZE, /* maxsegsz */
+ BUS_DMA_ALLOCNOW, /* flags */
+ NULL, NULL, /* lockfunc, lockfuncarg */
+ &sc->txmbuf_dtag);
+ if (error != 0) {
+ device_printf(sc->dev,
+ "Failed to create DMA tag for Tx mbufs.\n");
+ goto fail;
+ }
+
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ error = mvneta_ring_alloc_tx_queue(sc, q);
+ if (error != 0) {
+ device_printf(sc->dev,
+ "Failed to allocate DMA safe memory for TxQ: %d\n", q);
+ goto fail;
+ }
+ }
+
+ /*
+ * Create Rx DMA.
+ */
+ /* Create tag for Rx descripors */
+ error = bus_dma_tag_create(
+ bus_get_dma_tag(sc->dev), /* parent */
+ 32, 0, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filtfunc, filtfuncarg */
+ sizeof(struct mvneta_rx_desc) * MVNETA_RX_RING_CNT, /* maxsize */
+ 1, /* nsegments */
+ sizeof(struct mvneta_rx_desc) * MVNETA_RX_RING_CNT, /* maxsegsz */
+ 0, /* flags */
+ NULL, NULL, /* lockfunc, lockfuncarg */
+ &sc->rx_dtag); /* dmat */
+ if (error != 0) {
+ device_printf(sc->dev,
+ "Failed to create DMA tag for Rx descriptors.\n");
+ goto fail;
+ }
+
+ /* Create tag for Rx buffers */
+ error = bus_dma_tag_create(
+ bus_get_dma_tag(sc->dev), /* parent */
+ 32, 0, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filtfunc, filtfuncarg */
+ MVNETA_PACKET_SIZE, 1, /* maxsize, nsegments */
+ MVNETA_PACKET_SIZE, /* maxsegsz */
+ 0, /* flags */
+ NULL, NULL, /* lockfunc, lockfuncarg */
+ &sc->rxbuf_dtag); /* dmat */
+ if (error != 0) {
+ device_printf(sc->dev,
+ "Failed to create DMA tag for Rx buffers.\n");
+ goto fail;
+ }
+
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ if (mvneta_ring_alloc_rx_queue(sc, q) != 0) {
+ device_printf(sc->dev,
+ "Failed to allocate DMA safe memory for RxQ: %d\n", q);
+ goto fail;
+ }
+ }
+
+ return (0);
+fail:
+ mvneta_detach(sc->dev);
+
+ return (error);
+}
+
+/* ARGSUSED */
+int
+mvneta_attach(device_t self)
+{
+ struct mvneta_softc *sc;
+ struct ifnet *ifp;
+ device_t child;
+ int ifm_target;
+ int q, error;
+ uint32_t reg;
+
+ sc = device_get_softc(self);
+ sc->dev = self;
+
+ mtx_init(&sc->mtx, "mvneta_sc", NULL, MTX_DEF);
+
+ error = bus_alloc_resources(self, res_spec, sc->res);
+ if (error) {
+ device_printf(self, "could not allocate resources\n");
+ return (ENXIO);
+ }
+
+ sc->version = MVNETA_READ(sc, MVNETA_PV);
+ device_printf(self, "version is %x\n", sc->version);
+ callout_init(&sc->tick_ch, 0);
+
+ /*
+ * make sure DMA engines are in reset state
+ */
+ MVNETA_WRITE(sc, MVNETA_PRXINIT, 0x00000001);
+ MVNETA_WRITE(sc, MVNETA_PTXINIT, 0x00000001);
+
+ /*
+ * Disable port snoop for buffers and descriptors
+ * to avoid L2 caching of both without DRAM copy.
+ * Obtain coherency settings from the first MBUS
+ * window attribute.
+ */
+ if ((MVNETA_READ(sc, MV_WIN_NETA_BASE(0)) & IO_WIN_COH_ATTR_MASK) == 0) {
+ reg = MVNETA_READ(sc, MVNETA_PSNPCFG);
+ reg &= ~MVNETA_PSNPCFG_DESCSNP_MASK;
+ reg &= ~MVNETA_PSNPCFG_BUFSNP_MASK;
+ MVNETA_WRITE(sc, MVNETA_PSNPCFG, reg);
+ }
+
+ /*
+ * MAC address
+ */
+ if (mvneta_get_mac_address(sc, sc->enaddr)) {
+ device_printf(self, "no mac address.\n");
+ return (ENXIO);
+ }
+ mvneta_set_mac_address(sc, sc->enaddr);
+
+ mvneta_disable_intr(sc);
+
+ /* Allocate network interface */
+ ifp = sc->ifp = if_alloc(IFT_ETHER);
+ if (ifp == NULL) {
+ device_printf(self, "if_alloc() failed\n");
+ mvneta_detach(self);
+ return (ENOMEM);
+ }
+ if_initname(ifp, device_get_name(self), device_get_unit(self));
+
+ /*
+ * We can support 802.1Q VLAN-sized frames and jumbo
+ * Ethernet frames.
+ */
+ ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_JUMBO_MTU;
+
+ ifp->if_softc = sc;
+ ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+#ifdef MVNETA_MULTIQUEUE
+ ifp->if_transmit = mvneta_transmit;
+ ifp->if_qflush = mvneta_qflush;
+#else /* !MVNETA_MULTIQUEUE */
+ ifp->if_start = mvneta_start;
+ ifp->if_snd.ifq_drv_maxlen = MVNETA_TX_RING_CNT - 1;
+ IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
+ IFQ_SET_READY(&ifp->if_snd);
+#endif
+ ifp->if_init = mvneta_init;
+ ifp->if_ioctl = mvneta_ioctl;
+
+ /*
+ * We can do IPv4/TCPv4/UDPv4/TCPv6/UDPv6 checksums in hardware.
+ */
+ ifp->if_capabilities |= IFCAP_HWCSUM;
+
+ /*
+ * As VLAN hardware tagging is not supported
+ * but is necessary to perform VLAN hardware checksums,
+ * it is done in the driver
+ */
+ ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM;
+
+ /*
+ * Currently IPv6 HW checksum is broken, so make sure it is disabled.
+ */
+ ifp->if_capabilities &= ~IFCAP_HWCSUM_IPV6;
+ ifp->if_capenable = ifp->if_capabilities;
+
+ /*
+ * Disabled option(s):
+ * - Support for Large Receive Offload
+ */
+ ifp->if_capabilities |= IFCAP_LRO;
+
+ ifp->if_hwassist = CSUM_IP | CSUM_TCP | CSUM_UDP;
+
+ /*
+ * Device DMA Buffer allocation.
+ * Handles resource deallocation in case of failure.
+ */
+ error = mvneta_dma_create(sc);
+ if (error != 0) {
+ mvneta_detach(self);
+ return (error);
+ }
+
+ /* Initialize queues */
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ error = mvneta_ring_init_tx_queue(sc, q);
+ if (error != 0) {
+ mvneta_detach(self);
+ return (error);
+ }
+ }
+
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ error = mvneta_ring_init_rx_queue(sc, q);
+ if (error != 0) {
+ mvneta_detach(self);
+ return (error);
+ }
+ }
+
+ ether_ifattach(ifp, sc->enaddr);
+
+ /*
+ * Enable DMA engines and Initialize Device Registers.
+ */
+ MVNETA_WRITE(sc, MVNETA_PRXINIT, 0x00000000);
+ MVNETA_WRITE(sc, MVNETA_PTXINIT, 0x00000000);
+ MVNETA_WRITE(sc, MVNETA_PACC, MVNETA_PACC_ACCELERATIONMODE_EDM);
+ mvneta_sc_lock(sc);
+ mvneta_filter_setup(sc);
+ mvneta_sc_unlock(sc);
+ mvneta_initreg(ifp);
+
+ /*
+ * Now MAC is working, setup MII.
+ */
+ if (mii_init == 0) {
+ /*
+ * MII bus is shared by all MACs and all PHYs in SoC.
+ * serializing the bus access should be safe.
+ */
+ mtx_init(&mii_mutex, "mvneta_mii", NULL, MTX_DEF);
+ mii_init = 1;
+ }
+
+ /* Attach PHY(s) */
+ if ((sc->phy_addr != MII_PHY_ANY) && (!sc->use_inband_status)) {
+ error = mii_attach(self, &sc->miibus, ifp, mvneta_mediachange,
+ mvneta_mediastatus, BMSR_DEFCAPMASK, sc->phy_addr,
+ MII_OFFSET_ANY, 0);
+ if (error != 0) {
+ if (bootverbose) {
+ device_printf(self,
+ "MII attach failed, error: %d\n", error);
+ }
+ ether_ifdetach(sc->ifp);
+ mvneta_detach(self);
+ return (error);
+ }
+ sc->mii = device_get_softc(sc->miibus);
+ sc->phy_attached = 1;
+
+ /* Disable auto-negotiation in MAC - rely on PHY layer */
+ mvneta_update_autoneg(sc, FALSE);
+ } else if (sc->use_inband_status == TRUE) {
+ /* In-band link status */
+ ifmedia_init(&sc->mvneta_ifmedia, 0, mvneta_mediachange,
+ mvneta_mediastatus);
+
+ /* Configure media */
+ ifmedia_add(&sc->mvneta_ifmedia, IFM_ETHER | IFM_1000_T | IFM_FDX,
+ 0, NULL);
+ ifmedia_add(&sc->mvneta_ifmedia, IFM_ETHER | IFM_100_TX, 0, NULL);
+ ifmedia_add(&sc->mvneta_ifmedia, IFM_ETHER | IFM_100_TX | IFM_FDX,
+ 0, NULL);
+ ifmedia_add(&sc->mvneta_ifmedia, IFM_ETHER | IFM_10_T, 0, NULL);
+ ifmedia_add(&sc->mvneta_ifmedia, IFM_ETHER | IFM_10_T | IFM_FDX,
+ 0, NULL);
+ ifmedia_add(&sc->mvneta_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL);
+ ifmedia_set(&sc->mvneta_ifmedia, IFM_ETHER | IFM_AUTO);
+
+ /* Enable auto-negotiation */
+ mvneta_update_autoneg(sc, TRUE);
+
+ mvneta_sc_lock(sc);
+ if (MVNETA_IS_LINKUP(sc))
+ mvneta_linkup(sc);
+ else
+ mvneta_linkdown(sc);
+ mvneta_sc_unlock(sc);
+
+ } else {
+ /* Fixed-link, use predefined values */
+ ifmedia_init(&sc->mvneta_ifmedia, 0, mvneta_mediachange,
+ mvneta_mediastatus);
+
+ ifm_target = IFM_ETHER;
+ switch (sc->phy_speed) {
+ case 2500:
+ if (sc->phy_mode != MVNETA_PHY_SGMII &&
+ sc->phy_mode != MVNETA_PHY_QSGMII) {
+ device_printf(self,
+ "2.5G speed can work only in (Q)SGMII mode\n");
+ ether_ifdetach(sc->ifp);
+ mvneta_detach(self);
+ return (ENXIO);
+ }
+ ifm_target |= IFM_2500_T;
+ break;
+ case 1000:
+ ifm_target |= IFM_1000_T;
+ break;
+ case 100:
+ ifm_target |= IFM_100_TX;
+ break;
+ case 10:
+ ifm_target |= IFM_10_T;
+ break;
+ default:
+ ether_ifdetach(sc->ifp);
+ mvneta_detach(self);
+ return (ENXIO);
+ }
+
+ if (sc->phy_fdx)
+ ifm_target |= IFM_FDX;
+ else
+ ifm_target |= IFM_HDX;
+
+ ifmedia_add(&sc->mvneta_ifmedia, ifm_target, 0, NULL);
+ ifmedia_set(&sc->mvneta_ifmedia, ifm_target);
+ if_link_state_change(sc->ifp, LINK_STATE_UP);
+
+ if (mvneta_has_switch(self)) {
+ child = device_add_child(sc->dev, "mdio", -1);
+ if (child == NULL) {
+ ether_ifdetach(sc->ifp);
+ mvneta_detach(self);
+ return (ENXIO);
+ }
+ bus_generic_attach(sc->dev);
+ bus_generic_attach(child);
+ }
+
+ /* Configure MAC media */
+ mvneta_update_media(sc, ifm_target);
+ }
+
+ sysctl_mvneta_init(sc);
+
+ callout_reset(&sc->tick_ch, 0, mvneta_tick, sc);
+
+ error = bus_setup_intr(self, sc->res[1],
+ INTR_TYPE_NET | INTR_MPSAFE, NULL, mvneta_intrs[0].handler, sc,
+ &sc->ih_cookie[0]);
+ if (error) {
+ device_printf(self, "could not setup %s\n",
+ mvneta_intrs[0].description);
+ ether_ifdetach(sc->ifp);
+ mvneta_detach(self);
+ return (error);
+ }
+
+ return (0);
+}
+
+STATIC int
+mvneta_detach(device_t dev)
+{
+ struct mvneta_softc *sc;
+ struct ifnet *ifp;
+ int q;
+
+ sc = device_get_softc(dev);
+ ifp = sc->ifp;
+
+ mvneta_stop(sc);
+ /* Detach network interface */
+ if (sc->ifp)
+ if_free(sc->ifp);
+
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++)
+ mvneta_ring_dealloc_rx_queue(sc, q);
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++)
+ mvneta_ring_dealloc_tx_queue(sc, q);
+
+ if (sc->tx_dtag != NULL)
+ bus_dma_tag_destroy(sc->tx_dtag);
+ if (sc->rx_dtag != NULL)
+ bus_dma_tag_destroy(sc->rx_dtag);
+ if (sc->txmbuf_dtag != NULL)
+ bus_dma_tag_destroy(sc->txmbuf_dtag);
+
+ bus_release_resources(dev, res_spec, sc->res);
+ return (0);
+}
+
+/*
+ * MII
+ */
+STATIC int
+mvneta_miibus_readreg(device_t dev, int phy, int reg)
+{
+ struct mvneta_softc *sc;
+ struct ifnet *ifp;
+ uint32_t smi, val;
+ int i;
+
+ sc = device_get_softc(dev);
+ ifp = sc->ifp;
+
+ mtx_lock(&mii_mutex);
+
+ for (i = 0; i < MVNETA_PHY_TIMEOUT; i++) {
+ if ((MVNETA_READ(sc, MVNETA_SMI) & MVNETA_SMI_BUSY) == 0)
+ break;
+ DELAY(1);
+ }
+ if (i == MVNETA_PHY_TIMEOUT) {
+ if_printf(ifp, "SMI busy timeout\n");
+ mtx_unlock(&mii_mutex);
+ return (-1);
+ }
+
+ smi = MVNETA_SMI_PHYAD(phy) |
+ MVNETA_SMI_REGAD(reg) | MVNETA_SMI_OPCODE_READ;
+ MVNETA_WRITE(sc, MVNETA_SMI, smi);
+
+ for (i = 0; i < MVNETA_PHY_TIMEOUT; i++) {
+ if ((MVNETA_READ(sc, MVNETA_SMI) & MVNETA_SMI_BUSY) == 0)
+ break;
+ DELAY(1);
+ }
+
+ if (i == MVNETA_PHY_TIMEOUT) {
+ if_printf(ifp, "SMI busy timeout\n");
+ mtx_unlock(&mii_mutex);
+ return (-1);
+ }
+ for (i = 0; i < MVNETA_PHY_TIMEOUT; i++) {
+ smi = MVNETA_READ(sc, MVNETA_SMI);
+ if (smi & MVNETA_SMI_READVALID)
+ break;
+ DELAY(1);
+ }
+
+ if (i == MVNETA_PHY_TIMEOUT) {
+ if_printf(ifp, "SMI busy timeout\n");
+ mtx_unlock(&mii_mutex);
+ return (-1);
+ }
+
+ mtx_unlock(&mii_mutex);
+
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s i=%d, timeout=%d\n", ifp->if_xname, i,
+ MVNETA_PHY_TIMEOUT);
+#endif
+
+ val = smi & MVNETA_SMI_DATA_MASK;
+
+#ifdef MVNETA_KTR
+ CTR4(KTR_SPARE2, "%s phy=%d, reg=%#x, val=%#x\n", ifp->if_xname, phy,
+ reg, val);
+#endif
+ return (val);
+}
+
+STATIC int
+mvneta_miibus_writereg(device_t dev, int phy, int reg, int val)
+{
+ struct mvneta_softc *sc;
+ struct ifnet *ifp;
+ uint32_t smi;
+ int i;
+
+ sc = device_get_softc(dev);
+ ifp = sc->ifp;
+#ifdef MVNETA_KTR
+ CTR4(KTR_SPARE2, "%s phy=%d, reg=%#x, val=%#x\n", ifp->if_xname,
+ phy, reg, val);
+#endif
+
+ mtx_lock(&mii_mutex);
+
+ for (i = 0; i < MVNETA_PHY_TIMEOUT; i++) {
+ if ((MVNETA_READ(sc, MVNETA_SMI) & MVNETA_SMI_BUSY) == 0)
+ break;
+ DELAY(1);
+ }
+ if (i == MVNETA_PHY_TIMEOUT) {
+ if_printf(ifp, "SMI busy timeout\n");
+ mtx_unlock(&mii_mutex);
+ return (0);
+ }
+
+ smi = MVNETA_SMI_PHYAD(phy) | MVNETA_SMI_REGAD(reg) |
+ MVNETA_SMI_OPCODE_WRITE | (val & MVNETA_SMI_DATA_MASK);
+ MVNETA_WRITE(sc, MVNETA_SMI, smi);
+
+ for (i = 0; i < MVNETA_PHY_TIMEOUT; i++) {
+ if ((MVNETA_READ(sc, MVNETA_SMI) & MVNETA_SMI_BUSY) == 0)
+ break;
+ DELAY(1);
+ }
+
+ mtx_unlock(&mii_mutex);
+
+ if (i == MVNETA_PHY_TIMEOUT)
+ if_printf(ifp, "phy write timed out\n");
+
+ return (0);
+}
+
+STATIC void
+mvneta_portup(struct mvneta_softc *sc)
+{
+ int q;
+
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ mvneta_rx_lockq(sc, q);
+ mvneta_rx_queue_enable(sc->ifp, q);
+ mvneta_rx_unlockq(sc, q);
+ }
+
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ mvneta_tx_lockq(sc, q);
+ mvneta_tx_queue_enable(sc->ifp, q);
+ mvneta_tx_unlockq(sc, q);
+ }
+
+}
+
+STATIC void
+mvneta_portdown(struct mvneta_softc *sc)
+{
+ struct mvneta_rx_ring *rx;
+ struct mvneta_tx_ring *tx;
+ int q, cnt;
+ uint32_t reg;
+
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ rx = MVNETA_RX_RING(sc, q);
+ mvneta_rx_lockq(sc, q);
+ rx->queue_status = MVNETA_QUEUE_DISABLED;
+ mvneta_rx_unlockq(sc, q);
+ }
+
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ tx = MVNETA_TX_RING(sc, q);
+ mvneta_tx_lockq(sc, q);
+ tx->queue_status = MVNETA_QUEUE_DISABLED;
+ mvneta_tx_unlockq(sc, q);
+ }
+
+ /* Wait for all Rx activity to terminate. */
+ reg = MVNETA_READ(sc, MVNETA_RQC) & MVNETA_RQC_EN_MASK;
+ reg = MVNETA_RQC_DIS(reg);
+ MVNETA_WRITE(sc, MVNETA_RQC, reg);
+ cnt = 0;
+ do {
+ if (cnt >= RX_DISABLE_TIMEOUT) {
+ if_printf(sc->ifp,
+ "timeout for RX stopped. rqc 0x%x\n", reg);
+ break;
+ }
+ cnt++;
+ reg = MVNETA_READ(sc, MVNETA_RQC);
+ } while ((reg & MVNETA_RQC_EN_MASK) != 0);
+
+ /* Wait for all Tx activity to terminate. */
+ reg = MVNETA_READ(sc, MVNETA_PIE);
+ reg &= ~MVNETA_PIE_TXPKTINTRPTENB_MASK;
+ MVNETA_WRITE(sc, MVNETA_PIE, reg);
+
+ reg = MVNETA_READ(sc, MVNETA_PRXTXTIM);
+ reg &= ~MVNETA_PRXTXTI_TBTCQ_MASK;
+ MVNETA_WRITE(sc, MVNETA_PRXTXTIM, reg);
+
+ reg = MVNETA_READ(sc, MVNETA_TQC) & MVNETA_TQC_EN_MASK;
+ reg = MVNETA_TQC_DIS(reg);
+ MVNETA_WRITE(sc, MVNETA_TQC, reg);
+ cnt = 0;
+ do {
+ if (cnt >= TX_DISABLE_TIMEOUT) {
+ if_printf(sc->ifp,
+ "timeout for TX stopped. tqc 0x%x\n", reg);
+ break;
+ }
+ cnt++;
+ reg = MVNETA_READ(sc, MVNETA_TQC);
+ } while ((reg & MVNETA_TQC_EN_MASK) != 0);
+
+ /* Wait for all Tx FIFO is empty */
+ cnt = 0;
+ do {
+ if (cnt >= TX_FIFO_EMPTY_TIMEOUT) {
+ if_printf(sc->ifp,
+ "timeout for TX FIFO drained. ps0 0x%x\n", reg);
+ break;
+ }
+ cnt++;
+ reg = MVNETA_READ(sc, MVNETA_PS0);
+ } while (((reg & MVNETA_PS0_TXFIFOEMP) == 0) &&
+ ((reg & MVNETA_PS0_TXINPROG) != 0));
+}
+
+/*
+ * Device Register Initialization
+ * reset device registers to device driver default value.
+ * the device is not enabled here.
+ */
+STATIC int
+mvneta_initreg(struct ifnet *ifp)
+{
+ struct mvneta_softc *sc;
+ int q, i;
+ uint32_t reg;
+
+ sc = ifp->if_softc;
+#ifdef MVNETA_KTR
+ CTR1(KTR_SPARE2, "%s initializing device register", ifp->if_xname);
+#endif
+
+ /* Disable Legacy WRR, Disable EJP, Release from reset. */
+ MVNETA_WRITE(sc, MVNETA_TQC_1, 0);
+ /* Enable mbus retry. */
+ MVNETA_WRITE(sc, MVNETA_MBUS_CONF, MVNETA_MBUS_RETRY_EN);
+
+ /* Init TX/RX Queue Registers */
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ mvneta_rx_lockq(sc, q);
+ if (mvneta_rx_queue_init(ifp, q) != 0) {
+ device_printf(sc->dev,
+ "initialization failed: cannot initialize queue\n");
+ mvneta_rx_unlockq(sc, q);
+ return (ENOBUFS);
+ }
+ mvneta_rx_unlockq(sc, q);
+ }
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ mvneta_tx_lockq(sc, q);
+ if (mvneta_tx_queue_init(ifp, q) != 0) {
+ device_printf(sc->dev,
+ "initialization failed: cannot initialize queue\n");
+ mvneta_tx_unlockq(sc, q);
+ return (ENOBUFS);
+ }
+ mvneta_tx_unlockq(sc, q);
+ }
+
+ /*
+ * Ethernet Unit Control - disable automatic PHY management by HW.
+ * In case the port uses SMI-controlled PHY, poll its status with
+ * mii_tick() and update MAC settings accordingly.
+ */
+ reg = MVNETA_READ(sc, MVNETA_EUC);
+ reg &= ~MVNETA_EUC_POLLING;
+ MVNETA_WRITE(sc, MVNETA_EUC, reg);
+
+ /* EEE: Low Power Idle */
+ reg = MVNETA_LPIC0_LILIMIT(MVNETA_LPI_LI);
+ reg |= MVNETA_LPIC0_TSLIMIT(MVNETA_LPI_TS);
+ MVNETA_WRITE(sc, MVNETA_LPIC0, reg);
+
+ reg = MVNETA_LPIC1_TWLIMIT(MVNETA_LPI_TW);
+ MVNETA_WRITE(sc, MVNETA_LPIC1, reg);
+
+ reg = MVNETA_LPIC2_MUSTSET;
+ MVNETA_WRITE(sc, MVNETA_LPIC2, reg);
+
+ /* Port MAC Control set 0 */
+ reg = MVNETA_PMACC0_MUSTSET; /* must write 0x1 */
+ reg &= ~MVNETA_PMACC0_PORTEN; /* port is still disabled */
+ reg |= MVNETA_PMACC0_FRAMESIZELIMIT(MVNETA_MAX_FRAME);
+ MVNETA_WRITE(sc, MVNETA_PMACC0, reg);
+
+ /* Port MAC Control set 2 */
+ reg = MVNETA_READ(sc, MVNETA_PMACC2);
+ switch (sc->phy_mode) {
+ case MVNETA_PHY_QSGMII:
+ reg |= (MVNETA_PMACC2_PCSEN | MVNETA_PMACC2_RGMIIEN);
+ MVNETA_WRITE(sc, MVNETA_PSERDESCFG, MVNETA_PSERDESCFG_QSGMII);
+ break;
+ case MVNETA_PHY_SGMII:
+ reg |= (MVNETA_PMACC2_PCSEN | MVNETA_PMACC2_RGMIIEN);
+ MVNETA_WRITE(sc, MVNETA_PSERDESCFG, MVNETA_PSERDESCFG_SGMII);
+ break;
+ case MVNETA_PHY_RGMII:
+ case MVNETA_PHY_RGMII_ID:
+ reg |= MVNETA_PMACC2_RGMIIEN;
+ break;
+ }
+ reg |= MVNETA_PMACC2_MUSTSET;
+ reg &= ~MVNETA_PMACC2_PORTMACRESET;
+ MVNETA_WRITE(sc, MVNETA_PMACC2, reg);
+
+ /* Port Configuration Extended: enable Tx CRC generation */
+ reg = MVNETA_READ(sc, MVNETA_PXCX);
+ reg &= ~MVNETA_PXCX_TXCRCDIS;
+ MVNETA_WRITE(sc, MVNETA_PXCX, reg);
+
+ /* clear MIB counter registers(clear by read) */
+ for (i = 0; i < nitems(mvneta_mib_list); i++) {
+ if (mvneta_mib_list[i].reg64)
+ MVNETA_READ_MIB_8(sc, mvneta_mib_list[i].regnum);
+ else
+ MVNETA_READ_MIB_4(sc, mvneta_mib_list[i].regnum);
+ }
+ MVNETA_READ(sc, MVNETA_PDFC);
+ MVNETA_READ(sc, MVNETA_POFC);
+
+ /* Set SDC register except IPGINT bits */
+ reg = MVNETA_SDC_RXBSZ_16_64BITWORDS;
+ reg |= MVNETA_SDC_TXBSZ_16_64BITWORDS;
+ reg |= MVNETA_SDC_BLMR;
+ reg |= MVNETA_SDC_BLMT;
+ MVNETA_WRITE(sc, MVNETA_SDC, reg);
+
+ return (0);
+}
+
+STATIC void
+mvneta_dmamap_cb(void *arg, bus_dma_segment_t * segs, int nseg, int error)
+{
+
+ if (error != 0)
+ return;
+ *(bus_addr_t *)arg = segs->ds_addr;
+}
+
+STATIC int
+mvneta_ring_alloc_rx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_rx_ring *rx;
+ struct mvneta_buf *rxbuf;
+ bus_dmamap_t dmap;
+ int i, error;
+
+ if (q >= MVNETA_RX_QNUM_MAX)
+ return (EINVAL);
+
+ rx = MVNETA_RX_RING(sc, q);
+ mtx_init(&rx->ring_mtx, "mvneta_rx", NULL, MTX_DEF);
+ /* Allocate DMA memory for Rx descriptors */
+ error = bus_dmamem_alloc(sc->rx_dtag,
+ (void**)&(rx->desc),
+ BUS_DMA_NOWAIT | BUS_DMA_ZERO,
+ &rx->desc_map);
+ if (error != 0 || rx->desc == NULL)
+ goto fail;
+ error = bus_dmamap_load(sc->rx_dtag, rx->desc_map,
+ rx->desc,
+ sizeof(struct mvneta_rx_desc) * MVNETA_RX_RING_CNT,
+ mvneta_dmamap_cb, &rx->desc_pa, BUS_DMA_NOWAIT);
+ if (error != 0)
+ goto fail;
+
+ for (i = 0; i < MVNETA_RX_RING_CNT; i++) {
+ error = bus_dmamap_create(sc->rxbuf_dtag, 0, &dmap);
+ if (error != 0) {
+ device_printf(sc->dev,
+ "Failed to create DMA map for Rx buffer num: %d\n", i);
+ goto fail;
+ }
+ rxbuf = &rx->rxbuf[i];
+ rxbuf->dmap = dmap;
+ rxbuf->m = NULL;
+ }
+
+ return (0);
+fail:
+ mvneta_ring_dealloc_rx_queue(sc, q);
+ device_printf(sc->dev, "DMA Ring buffer allocation failure.\n");
+ return (error);
+}
+
+STATIC int
+mvneta_ring_alloc_tx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_tx_ring *tx;
+ int error;
+
+ if (q >= MVNETA_TX_QNUM_MAX)
+ return (EINVAL);
+ tx = MVNETA_TX_RING(sc, q);
+ mtx_init(&tx->ring_mtx, "mvneta_tx", NULL, MTX_DEF);
+ error = bus_dmamem_alloc(sc->tx_dtag,
+ (void**)&(tx->desc),
+ BUS_DMA_NOWAIT | BUS_DMA_ZERO,
+ &tx->desc_map);
+ if (error != 0 || tx->desc == NULL)
+ goto fail;
+ error = bus_dmamap_load(sc->tx_dtag, tx->desc_map,
+ tx->desc,
+ sizeof(struct mvneta_tx_desc) * MVNETA_TX_RING_CNT,
+ mvneta_dmamap_cb, &tx->desc_pa, BUS_DMA_NOWAIT);
+ if (error != 0)
+ goto fail;
+
+#ifdef MVNETA_MULTIQUEUE
+ tx->br = buf_ring_alloc(MVNETA_BUFRING_SIZE, M_DEVBUF, M_NOWAIT,
+ &tx->ring_mtx);
+ if (tx->br == NULL) {
+ device_printf(sc->dev,
+ "Could not setup buffer ring for TxQ(%d)\n", q);
+ error = ENOMEM;
+ goto fail;
+ }
+#endif
+
+ return (0);
+fail:
+ mvneta_ring_dealloc_tx_queue(sc, q);
+ device_printf(sc->dev, "DMA Ring buffer allocation failure.\n");
+ return (error);
+}
+
+STATIC void
+mvneta_ring_dealloc_tx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_tx_ring *tx;
+ struct mvneta_buf *txbuf;
+ void *kva;
+ int error;
+ int i;
+
+ if (q >= MVNETA_TX_QNUM_MAX)
+ return;
+ tx = MVNETA_TX_RING(sc, q);
+
+ if (tx->taskq != NULL) {
+ /* Remove task */
+ while (taskqueue_cancel(tx->taskq, &tx->task, NULL) != 0)
+ taskqueue_drain(tx->taskq, &tx->task);
+ }
+#ifdef MVNETA_MULTIQUEUE
+ if (tx->br != NULL)
+ drbr_free(tx->br, M_DEVBUF);
+#endif
+
+ if (sc->txmbuf_dtag != NULL) {
+ if (mtx_name(&tx->ring_mtx) != NULL) {
+ /*
+ * It is assumed that maps are being loaded after mutex
+ * is initialized. Therefore we can skip unloading maps
+ * when mutex is empty.
+ */
+ mvneta_tx_lockq(sc, q);
+ mvneta_ring_flush_tx_queue(sc, q);
+ mvneta_tx_unlockq(sc, q);
+ }
+ for (i = 0; i < MVNETA_TX_RING_CNT; i++) {
+ txbuf = &tx->txbuf[i];
+ if (txbuf->dmap != NULL) {
+ error = bus_dmamap_destroy(sc->txmbuf_dtag,
+ txbuf->dmap);
+ if (error != 0) {
+ panic("%s: map busy for Tx descriptor (Q%d, %d)",
+ __func__, q, i);
+ }
+ }
+ }
+ }
+
+ if (tx->desc_pa != 0)
+ bus_dmamap_unload(sc->tx_dtag, tx->desc_map);
+
+ kva = (void *)tx->desc;
+ if (kva != NULL)
+ bus_dmamem_free(sc->tx_dtag, tx->desc, tx->desc_map);
+
+ if (mtx_name(&tx->ring_mtx) != NULL)
+ mtx_destroy(&tx->ring_mtx);
+
+ memset(tx, 0, sizeof(*tx));
+}
+
+STATIC void
+mvneta_ring_dealloc_rx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_rx_ring *rx;
+ struct lro_ctrl *lro;
+ void *kva;
+
+ if (q >= MVNETA_RX_QNUM_MAX)
+ return;
+
+ rx = MVNETA_RX_RING(sc, q);
+
+ mvneta_ring_flush_rx_queue(sc, q);
+
+ if (rx->desc_pa != 0)
+ bus_dmamap_unload(sc->rx_dtag, rx->desc_map);
+
+ kva = (void *)rx->desc;
+ if (kva != NULL)
+ bus_dmamem_free(sc->rx_dtag, rx->desc, rx->desc_map);
+
+ lro = &rx->lro;
+ tcp_lro_free(lro);
+
+ if (mtx_name(&rx->ring_mtx) != NULL)
+ mtx_destroy(&rx->ring_mtx);
+
+ memset(rx, 0, sizeof(*rx));
+}
+
+STATIC int
+mvneta_ring_init_rx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_rx_ring *rx;
+ struct lro_ctrl *lro;
+ int error;
+
+ if (q >= MVNETA_RX_QNUM_MAX)
+ return (0);
+
+ rx = MVNETA_RX_RING(sc, q);
+ rx->dma = rx->cpu = 0;
+ rx->queue_th_received = MVNETA_RXTH_COUNT;
+ rx->queue_th_time = (get_tclk() / 1000) / 10; /* 0.1 [ms] */
+
+ /* Initialize LRO */
+ rx->lro_enabled = FALSE;
+ if ((sc->ifp->if_capenable & IFCAP_LRO) != 0) {
+ lro = &rx->lro;
+ error = tcp_lro_init(lro);
+ if (error != 0)
+ device_printf(sc->dev, "LRO Initialization failed!\n");
+ else {
+ rx->lro_enabled = TRUE;
+ lro->ifp = sc->ifp;
+ }
+ }
+
+ return (0);
+}
+
+STATIC int
+mvneta_ring_init_tx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_tx_ring *tx;
+ struct mvneta_buf *txbuf;
+ int i, error;
+
+ if (q >= MVNETA_TX_QNUM_MAX)
+ return (0);
+
+ tx = MVNETA_TX_RING(sc, q);
+
+ /* Tx handle */
+ for (i = 0; i < MVNETA_TX_RING_CNT; i++) {
+ txbuf = &tx->txbuf[i];
+ txbuf->m = NULL;
+ /* Tx handle needs DMA map for busdma_load_mbuf() */
+ error = bus_dmamap_create(sc->txmbuf_dtag, 0,
+ &txbuf->dmap);
+ if (error != 0) {
+ device_printf(sc->dev,
+ "can't create dma map (tx ring %d)\n", i);
+ return (error);
+ }
+ }
+ tx->dma = tx->cpu = 0;
+ tx->used = 0;
+ tx->drv_error = 0;
+ tx->queue_status = MVNETA_QUEUE_DISABLED;
+ tx->queue_hung = FALSE;
+
+ tx->ifp = sc->ifp;
+ tx->qidx = q;
+ TASK_INIT(&tx->task, 0, mvneta_tx_task, tx);
+ tx->taskq = taskqueue_create_fast("mvneta_tx_taskq", M_WAITOK,
+ taskqueue_thread_enqueue, &tx->taskq);
+ taskqueue_start_threads(&tx->taskq, 1, PI_NET, "%s: tx_taskq(%d)",
+ device_get_nameunit(sc->dev), q);
+
+ return (0);
+}
+
+STATIC void
+mvneta_ring_flush_tx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_tx_ring *tx;
+ struct mvneta_buf *txbuf;
+ int i;
+
+ tx = MVNETA_TX_RING(sc, q);
+ KASSERT_TX_MTX(sc, q);
+
+ /* Tx handle */
+ for (i = 0; i < MVNETA_TX_RING_CNT; i++) {
+ txbuf = &tx->txbuf[i];
+ bus_dmamap_unload(sc->txmbuf_dtag, txbuf->dmap);
+ if (txbuf->m != NULL) {
+ m_freem(txbuf->m);
+ txbuf->m = NULL;
+ }
+ }
+ tx->dma = tx->cpu = 0;
+ tx->used = 0;
+}
+
+STATIC void
+mvneta_ring_flush_rx_queue(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_rx_ring *rx;
+ struct mvneta_buf *rxbuf;
+ int i;
+
+ rx = MVNETA_RX_RING(sc, q);
+ KASSERT_RX_MTX(sc, q);
+
+ /* Rx handle */
+ for (i = 0; i < MVNETA_RX_RING_CNT; i++) {
+ rxbuf = &rx->rxbuf[i];
+ mvneta_rx_buf_free(sc, rxbuf);
+ }
+ rx->dma = rx->cpu = 0;
+}
+
+/*
+ * Rx/Tx Queue Control
+ */
+STATIC int
+mvneta_rx_queue_init(struct ifnet *ifp, int q)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_rx_ring *rx;
+ uint32_t reg;
+
+ sc = ifp->if_softc;
+ KASSERT_RX_MTX(sc, q);
+ rx = MVNETA_RX_RING(sc, q);
+ DASSERT(rx->desc_pa != 0);
+
+ /* descriptor address */
+ MVNETA_WRITE(sc, MVNETA_PRXDQA(q), rx->desc_pa);
+
+ /* Rx buffer size and descriptor ring size */
+ reg = MVNETA_PRXDQS_BUFFERSIZE(MVNETA_PACKET_SIZE >> 3);
+ reg |= MVNETA_PRXDQS_DESCRIPTORSQUEUESIZE(MVNETA_RX_RING_CNT);
+ MVNETA_WRITE(sc, MVNETA_PRXDQS(q), reg);
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s PRXDQS(%d): %#x", ifp->if_xname, q,
+ MVNETA_READ(sc, MVNETA_PRXDQS(q)));
+#endif
+ /* Rx packet offset address */
+ reg = MVNETA_PRXC_PACKETOFFSET(MVNETA_PACKET_OFFSET >> 3);
+ MVNETA_WRITE(sc, MVNETA_PRXC(q), reg);
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s PRXC(%d): %#x", ifp->if_xname, q,
+ MVNETA_READ(sc, MVNETA_PRXC(q)));
+#endif
+
+ /* if DMA is not working, register is not updated */
+ DASSERT(MVNETA_READ(sc, MVNETA_PRXDQA(q)) == rx->desc_pa);
+ return (0);
+}
+
+STATIC int
+mvneta_tx_queue_init(struct ifnet *ifp, int q)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_tx_ring *tx;
+ uint32_t reg;
+
+ sc = ifp->if_softc;
+ KASSERT_TX_MTX(sc, q);
+ tx = MVNETA_TX_RING(sc, q);
+ DASSERT(tx->desc_pa != 0);
+
+ /* descriptor address */
+ MVNETA_WRITE(sc, MVNETA_PTXDQA(q), tx->desc_pa);
+
+ /* descriptor ring size */
+ reg = MVNETA_PTXDQS_DQS(MVNETA_TX_RING_CNT);
+ MVNETA_WRITE(sc, MVNETA_PTXDQS(q), reg);
+
+ /* if DMA is not working, register is not updated */
+ DASSERT(MVNETA_READ(sc, MVNETA_PTXDQA(q)) == tx->desc_pa);
+ return (0);
+}
+
+STATIC int
+mvneta_rx_queue_enable(struct ifnet *ifp, int q)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_rx_ring *rx;
+ uint32_t reg;
+
+ sc = ifp->if_softc;
+ rx = MVNETA_RX_RING(sc, q);
+ KASSERT_RX_MTX(sc, q);
+
+ /* Set Rx interrupt threshold */
+ reg = MVNETA_PRXDQTH_ODT(rx->queue_th_received);
+ MVNETA_WRITE(sc, MVNETA_PRXDQTH(q), reg);
+
+ reg = MVNETA_PRXITTH_RITT(rx->queue_th_time);
+ MVNETA_WRITE(sc, MVNETA_PRXITTH(q), reg);
+
+ /* Unmask RXTX_TH Intr. */
+ reg = MVNETA_READ(sc, MVNETA_PRXTXTIM);
+ reg |= MVNETA_PRXTXTI_RBICTAPQ(q); /* Rx Buffer Interrupt Coalese */
+ MVNETA_WRITE(sc, MVNETA_PRXTXTIM, reg);
+
+ /* Enable Rx queue */
+ reg = MVNETA_READ(sc, MVNETA_RQC) & MVNETA_RQC_EN_MASK;
+ reg |= MVNETA_RQC_ENQ(q);
+ MVNETA_WRITE(sc, MVNETA_RQC, reg);
+
+ rx->queue_status = MVNETA_QUEUE_WORKING;
+ return (0);
+}
+
+STATIC int
+mvneta_tx_queue_enable(struct ifnet *ifp, int q)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_tx_ring *tx;
+
+ sc = ifp->if_softc;
+ tx = MVNETA_TX_RING(sc, q);
+ KASSERT_TX_MTX(sc, q);
+
+ /* Enable Tx queue */
+ MVNETA_WRITE(sc, MVNETA_TQC, MVNETA_TQC_ENQ(q));
+
+ tx->queue_status = MVNETA_QUEUE_IDLE;
+ tx->queue_hung = FALSE;
+ return (0);
+}
+
+STATIC __inline void
+mvneta_rx_lockq(struct mvneta_softc *sc, int q)
+{
+
+ DASSERT(q >= 0);
+ DASSERT(q < MVNETA_RX_QNUM_MAX);
+ mtx_lock(&sc->rx_ring[q].ring_mtx);
+}
+
+STATIC __inline void
+mvneta_rx_unlockq(struct mvneta_softc *sc, int q)
+{
+
+ DASSERT(q >= 0);
+ DASSERT(q < MVNETA_RX_QNUM_MAX);
+ mtx_unlock(&sc->rx_ring[q].ring_mtx);
+}
+
+STATIC __inline int __unused
+mvneta_tx_trylockq(struct mvneta_softc *sc, int q)
+{
+
+ DASSERT(q >= 0);
+ DASSERT(q < MVNETA_TX_QNUM_MAX);
+ return (mtx_trylock(&sc->tx_ring[q].ring_mtx));
+}
+
+STATIC __inline void
+mvneta_tx_lockq(struct mvneta_softc *sc, int q)
+{
+
+ DASSERT(q >= 0);
+ DASSERT(q < MVNETA_TX_QNUM_MAX);
+ mtx_lock(&sc->tx_ring[q].ring_mtx);
+}
+
+STATIC __inline void
+mvneta_tx_unlockq(struct mvneta_softc *sc, int q)
+{
+
+ DASSERT(q >= 0);
+ DASSERT(q < MVNETA_TX_QNUM_MAX);
+ mtx_unlock(&sc->tx_ring[q].ring_mtx);
+}
+
+/*
+ * Interrupt Handlers
+ */
+STATIC void
+mvneta_disable_intr(struct mvneta_softc *sc)
+{
+
+ MVNETA_WRITE(sc, MVNETA_EUIM, 0);
+ MVNETA_WRITE(sc, MVNETA_EUIC, 0);
+ MVNETA_WRITE(sc, MVNETA_PRXTXTIM, 0);
+ MVNETA_WRITE(sc, MVNETA_PRXTXTIC, 0);
+ MVNETA_WRITE(sc, MVNETA_PRXTXIM, 0);
+ MVNETA_WRITE(sc, MVNETA_PRXTXIC, 0);
+ MVNETA_WRITE(sc, MVNETA_PMIM, 0);
+ MVNETA_WRITE(sc, MVNETA_PMIC, 0);
+ MVNETA_WRITE(sc, MVNETA_PIE, 0);
+}
+
+STATIC void
+mvneta_enable_intr(struct mvneta_softc *sc)
+{
+ uint32_t reg;
+
+ /* Enable Summary Bit to check all interrupt cause. */
+ reg = MVNETA_READ(sc, MVNETA_PRXTXTIM);
+ reg |= MVNETA_PRXTXTI_PMISCICSUMMARY;
+ MVNETA_WRITE(sc, MVNETA_PRXTXTIM, reg);
+
+ if (sc->use_inband_status) {
+ /* Enable Port MISC Intr. (via RXTX_TH_Summary bit) */
+ MVNETA_WRITE(sc, MVNETA_PMIM, MVNETA_PMI_PHYSTATUSCHNG |
+ MVNETA_PMI_LINKCHANGE | MVNETA_PMI_PSCSYNCCHANGE);
+ }
+
+ /* Enable All Queue Interrupt */
+ reg = MVNETA_READ(sc, MVNETA_PIE);
+ reg |= MVNETA_PIE_RXPKTINTRPTENB_MASK;
+ reg |= MVNETA_PIE_TXPKTINTRPTENB_MASK;
+ MVNETA_WRITE(sc, MVNETA_PIE, reg);
+}
+
+STATIC void
+mvneta_rxtxth_intr(void *arg)
+{
+ struct mvneta_softc *sc;
+ struct ifnet *ifp;
+ uint32_t ic, queues;
+
+ sc = arg;
+ ifp = sc->ifp;
+#ifdef MVNETA_KTR
+ CTR1(KTR_SPARE2, "%s got RXTX_TH_Intr", ifp->if_xname);
+#endif
+ ic = MVNETA_READ(sc, MVNETA_PRXTXTIC);
+ if (ic == 0)
+ return;
+ MVNETA_WRITE(sc, MVNETA_PRXTXTIC, ~ic);
+
+ /* Ack maintance interrupt first */
+ if (__predict_false((ic & MVNETA_PRXTXTI_PMISCICSUMMARY) &&
+ sc->use_inband_status)) {
+ mvneta_sc_lock(sc);
+ mvneta_misc_intr(sc);
+ mvneta_sc_unlock(sc);
+ }
+ if (__predict_false(!(ifp->if_drv_flags & IFF_DRV_RUNNING)))
+ return;
+ /* RxTxTH interrupt */
+ queues = MVNETA_PRXTXTI_GET_RBICTAPQ(ic);
+ if (__predict_true(queues)) {
+#ifdef MVNETA_KTR
+ CTR1(KTR_SPARE2, "%s got PRXTXTIC: +RXEOF", ifp->if_xname);
+#endif
+ /* At the moment the driver support only one RX queue. */
+ DASSERT(MVNETA_IS_QUEUE_SET(queues, 0));
+ mvneta_rx(sc, 0, 0);
+ }
+}
+
+STATIC int
+mvneta_misc_intr(struct mvneta_softc *sc)
+{
+ uint32_t ic;
+ int claimed = 0;
+
+#ifdef MVNETA_KTR
+ CTR1(KTR_SPARE2, "%s got MISC_INTR", sc->ifp->if_xname);
+#endif
+ KASSERT_SC_MTX(sc);
+
+ for (;;) {
+ ic = MVNETA_READ(sc, MVNETA_PMIC);
+ ic &= MVNETA_READ(sc, MVNETA_PMIM);
+ if (ic == 0)
+ break;
+ MVNETA_WRITE(sc, MVNETA_PMIC, ~ic);
+ claimed = 1;
+
+ if (ic & (MVNETA_PMI_PHYSTATUSCHNG |
+ MVNETA_PMI_LINKCHANGE | MVNETA_PMI_PSCSYNCCHANGE))
+ mvneta_link_isr(sc);
+ }
+ return (claimed);
+}
+
+STATIC void
+mvneta_tick(void *arg)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_tx_ring *tx;
+ struct mvneta_rx_ring *rx;
+ int q;
+ uint32_t fc_prev, fc_curr;
+
+ sc = arg;
+
+ /*
+ * This is done before mib update to get the right stats
+ * for this tick.
+ */
+ mvneta_tx_drain(sc);
+
+ /* Extract previous flow-control frame received counter. */
+ fc_prev = sc->sysctl_mib[MVNETA_MIB_FC_GOOD_IDX].counter;
+ /* Read mib registers (clear by read). */
+ mvneta_update_mib(sc);
+ /* Extract current flow-control frame received counter. */
+ fc_curr = sc->sysctl_mib[MVNETA_MIB_FC_GOOD_IDX].counter;
+
+
+ if (sc->phy_attached && sc->ifp->if_flags & IFF_UP) {
+ mvneta_sc_lock(sc);
+ mii_tick(sc->mii);
+
+ /* Adjust MAC settings */
+ mvneta_adjust_link(sc);
+ mvneta_sc_unlock(sc);
+ }
+
+ /*
+ * We were unable to refill the rx queue and left the rx func, leaving
+ * the ring without mbuf and no way to call the refill func.
+ */
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ rx = MVNETA_RX_RING(sc, q);
+ if (rx->needs_refill == TRUE) {
+ mvneta_rx_lockq(sc, q);
+ mvneta_rx_queue_refill(sc, q);
+ mvneta_rx_unlockq(sc, q);
+ }
+ }
+
+ /*
+ * Watchdog:
+ * - check if queue is mark as hung.
+ * - ignore hung status if we received some pause frame
+ * as hardware may have paused packet transmit.
+ */
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ /*
+ * We should take queue lock, but as we only read
+ * queue status we can do it without lock, we may
+ * only missdetect queue status for one tick.
+ */
+ tx = MVNETA_TX_RING(sc, q);
+
+ if (tx->queue_hung && (fc_curr - fc_prev) == 0)
+ goto timeout;
+ }
+
+ callout_schedule(&sc->tick_ch, hz);
+ return;
+
+timeout:
+ if_printf(sc->ifp, "watchdog timeout\n");
+
+ mvneta_sc_lock(sc);
+ sc->counter_watchdog++;
+ sc->counter_watchdog_mib++;
+ /* Trigger reinitialize sequence. */
+ mvneta_stop_locked(sc);
+ mvneta_init_locked(sc);
+ mvneta_sc_unlock(sc);
+}
+
+STATIC void
+mvneta_qflush(struct ifnet *ifp)
+{
+#ifdef MVNETA_MULTIQUEUE
+ struct mvneta_softc *sc;
+ struct mvneta_tx_ring *tx;
+ struct mbuf *m;
+ size_t q;
+
+ sc = ifp->if_softc;
+
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ tx = MVNETA_TX_RING(sc, q);
+ mvneta_tx_lockq(sc, q);
+ while ((m = buf_ring_dequeue_sc(tx->br)) != NULL)
+ m_freem(m);
+ mvneta_tx_unlockq(sc, q);
+ }
+#endif
+ if_qflush(ifp);
+}
+
+STATIC void
+mvneta_tx_task(void *arg, int pending)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_tx_ring *tx;
+ struct ifnet *ifp;
+ int error;
+
+ tx = arg;
+ ifp = tx->ifp;
+ sc = ifp->if_softc;
+
+ mvneta_tx_lockq(sc, tx->qidx);
+ error = mvneta_xmit_locked(sc, tx->qidx);
+ mvneta_tx_unlockq(sc, tx->qidx);
+
+ /* Try again */
+ if (__predict_false(error != 0 && error != ENETDOWN)) {
+ pause("mvneta_tx_task_sleep", 1);
+ taskqueue_enqueue(tx->taskq, &tx->task);
+ }
+}
+
+STATIC int
+mvneta_xmitfast_locked(struct mvneta_softc *sc, int q, struct mbuf **m)
+{
+ struct mvneta_tx_ring *tx;
+ struct ifnet *ifp;
+ int error;
+
+ KASSERT_TX_MTX(sc, q);
+ tx = MVNETA_TX_RING(sc, q);
+ error = 0;
+
+ ifp = sc->ifp;
+
+ /* Dont enqueue packet if the queue is disabled. */
+ if (__predict_false(tx->queue_status == MVNETA_QUEUE_DISABLED)) {
+ m_freem(*m);
+ *m = NULL;
+ return (ENETDOWN);
+ }
+
+ /* Reclaim mbuf if above threshold. */
+ if (__predict_true(tx->used > MVNETA_TX_RECLAIM_COUNT))
+ mvneta_tx_queue_complete(sc, q);
+
+ /* Do not call transmit path if queue is already too full. */
+ if (__predict_false(tx->used >
+ MVNETA_TX_RING_CNT - MVNETA_TX_SEGLIMIT))
+ return (ENOBUFS);
+
+ error = mvneta_tx_queue(sc, m, q);
+ if (__predict_false(error != 0))
+ return (error);
+
+ /* Send a copy of the frame to the BPF listener */
+ ETHER_BPF_MTAP(ifp, *m);
+
+ /* Set watchdog on */
+ tx->watchdog_time = ticks;
+ tx->queue_status = MVNETA_QUEUE_WORKING;
+
+ return (error);
+}
+
+#ifdef MVNETA_MULTIQUEUE
+STATIC int
+mvneta_transmit(struct ifnet *ifp, struct mbuf *m)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_tx_ring *tx;
+ int error;
+ int q;
+
+ sc = ifp->if_softc;
+
+ /* Use default queue if there is no flow id as thread can migrate. */
+ if (__predict_true(M_HASHTYPE_GET(m) != M_HASHTYPE_NONE))
+ q = m->m_pkthdr.flowid % MVNETA_TX_QNUM_MAX;
+ else
+ q = 0;
+
+ tx = MVNETA_TX_RING(sc, q);
+
+ /* If buf_ring is full start transmit immediatly. */
+ if (buf_ring_full(tx->br)) {
+ mvneta_tx_lockq(sc, q);
+ mvneta_xmit_locked(sc, q);
+ mvneta_tx_unlockq(sc, q);
+ }
+
+ /*
+ * If the buf_ring is empty we will not reorder packets.
+ * If the lock is available transmit without using buf_ring.
+ */
+ if (buf_ring_empty(tx->br) && mvneta_tx_trylockq(sc, q) != 0) {
+ error = mvneta_xmitfast_locked(sc, q, &m);
+ mvneta_tx_unlockq(sc, q);
+ if (__predict_true(error == 0))
+ return (0);
+
+ /* Transmit can fail in fastpath. */
+ if (__predict_false(m == NULL))
+ return (error);
+ }
+
+ /* Enqueue then schedule taskqueue. */
+ error = drbr_enqueue(ifp, tx->br, m);
+ if (__predict_false(error != 0))
+ return (error);
+
+ taskqueue_enqueue(tx->taskq, &tx->task);
+ return (0);
+}
+
+STATIC int
+mvneta_xmit_locked(struct mvneta_softc *sc, int q)
+{
+ struct ifnet *ifp;
+ struct mvneta_tx_ring *tx;
+ struct mbuf *m;
+ int error;
+
+ KASSERT_TX_MTX(sc, q);
+ ifp = sc->ifp;
+ tx = MVNETA_TX_RING(sc, q);
+ error = 0;
+
+ while ((m = drbr_peek(ifp, tx->br)) != NULL) {
+ error = mvneta_xmitfast_locked(sc, q, &m);
+ if (__predict_false(error != 0)) {
+ if (m != NULL)
+ drbr_putback(ifp, tx->br, m);
+ else
+ drbr_advance(ifp, tx->br);
+ break;
+ }
+ drbr_advance(ifp, tx->br);
+ }
+
+ return (error);
+}
+#else /* !MVNETA_MULTIQUEUE */
+STATIC void
+mvneta_start(struct ifnet *ifp)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_tx_ring *tx;
+ int error;
+
+ sc = ifp->if_softc;
+ tx = MVNETA_TX_RING(sc, 0);
+
+ mvneta_tx_lockq(sc, 0);
+ error = mvneta_xmit_locked(sc, 0);
+ mvneta_tx_unlockq(sc, 0);
+ /* Handle retransmit in the background taskq. */
+ if (__predict_false(error != 0 && error != ENETDOWN))
+ taskqueue_enqueue(tx->taskq, &tx->task);
+}
+
+STATIC int
+mvneta_xmit_locked(struct mvneta_softc *sc, int q)
+{
+ struct ifnet *ifp;
+ struct mvneta_tx_ring *tx;
+ struct mbuf *m;
+ int error;
+
+ KASSERT_TX_MTX(sc, q);
+ ifp = sc->ifp;
+ tx = MVNETA_TX_RING(sc, 0);
+ error = 0;
+
+ while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) {
+ IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
+ if (m == NULL)
+ break;
+
+ error = mvneta_xmitfast_locked(sc, q, &m);
+ if (__predict_false(error != 0)) {
+ if (m != NULL)
+ IFQ_DRV_PREPEND(&ifp->if_snd, m);
+ break;
+ }
+ }
+
+ return (error);
+}
+#endif
+
+STATIC int
+mvneta_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+ struct mvneta_softc *sc;
+ struct mvneta_rx_ring *rx;
+ struct ifreq *ifr;
+ int error, mask;
+ uint32_t flags;
+ int q;
+
+ error = 0;
+ sc = ifp->if_softc;
+ ifr = (struct ifreq *)data;
+ switch (cmd) {
+ case SIOCSIFFLAGS:
+ mvneta_sc_lock(sc);
+ if (ifp->if_flags & IFF_UP) {
+ if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
+ flags = ifp->if_flags ^ sc->mvneta_if_flags;
+
+ if (flags != 0)
+ sc->mvneta_if_flags = ifp->if_flags;
+
+ if ((flags & IFF_PROMISC) != 0)
+ mvneta_filter_setup(sc);
+ } else {
+ mvneta_init_locked(sc);
+ sc->mvneta_if_flags = ifp->if_flags;
+ if (sc->phy_attached)
+ mii_mediachg(sc->mii);
+ mvneta_sc_unlock(sc);
+ break;
+ }
+ } else if (ifp->if_drv_flags & IFF_DRV_RUNNING)
+ mvneta_stop_locked(sc);
+
+ sc->mvneta_if_flags = ifp->if_flags;
+ mvneta_sc_unlock(sc);
+ break;
+ case SIOCSIFCAP:
+ if (ifp->if_mtu > MVNETA_MAX_CSUM_MTU &&
+ ifr->ifr_reqcap & IFCAP_TXCSUM)
+ ifr->ifr_reqcap &= ~IFCAP_TXCSUM;
+ mask = ifp->if_capenable ^ ifr->ifr_reqcap;
+ if (mask & IFCAP_HWCSUM) {
+ ifp->if_capenable &= ~IFCAP_HWCSUM;
+ ifp->if_capenable |= IFCAP_HWCSUM & ifr->ifr_reqcap;
+ if (ifp->if_capenable & IFCAP_TXCSUM)
+ ifp->if_hwassist = CSUM_IP | CSUM_TCP |
+ CSUM_UDP;
+ else
+ ifp->if_hwassist = 0;
+ }
+ if (mask & IFCAP_LRO) {
+ mvneta_sc_lock(sc);
+ ifp->if_capenable ^= IFCAP_LRO;
+ if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ rx = MVNETA_RX_RING(sc, q);
+ rx->lro_enabled = !rx->lro_enabled;
+ }
+ }
+ mvneta_sc_unlock(sc);
+ }
+ VLAN_CAPABILITIES(ifp);
+ break;
+ case SIOCSIFMEDIA:
+ if ((IFM_SUBTYPE(ifr->ifr_media) == IFM_1000_T ||
+ IFM_SUBTYPE(ifr->ifr_media) == IFM_2500_T) &&
+ (ifr->ifr_media & IFM_FDX) == 0) {
+ device_printf(sc->dev,
+ "%s half-duplex unsupported\n",
+ IFM_SUBTYPE(ifr->ifr_media) == IFM_1000_T ?
+ "1000Base-T" :
+ "2500Base-T");
+ error = EINVAL;
+ break;
+ }
+ case SIOCGIFMEDIA: /* FALLTHROUGH */
+ if (!sc->phy_attached)
+ error = ifmedia_ioctl(ifp, ifr, &sc->mvneta_ifmedia,
+ cmd);
+ else
+ error = ifmedia_ioctl(ifp, ifr, &sc->mii->mii_media,
+ cmd);
+ break;
+ case SIOCSIFMTU:
+ if (ifr->ifr_mtu < 68 || ifr->ifr_mtu > MVNETA_MAX_FRAME -
+ MVNETA_ETHER_SIZE) {
+ error = EINVAL;
+ } else {
+ ifp->if_mtu = ifr->ifr_mtu;
+ mvneta_sc_lock(sc);
+ if (ifp->if_mtu > MVNETA_MAX_CSUM_MTU) {
+ ifp->if_capenable &= ~IFCAP_TXCSUM;
+ ifp->if_hwassist = 0;
+ } else {
+ ifp->if_capenable |= IFCAP_TXCSUM;
+ ifp->if_hwassist = CSUM_IP | CSUM_TCP |
+ CSUM_UDP;
+ }
+
+ if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
+ /* Trigger reinitialize sequence */
+ mvneta_stop_locked(sc);
+ mvneta_init_locked(sc);
+ }
+ mvneta_sc_unlock(sc);
+ }
+ break;
+
+ default:
+ error = ether_ioctl(ifp, cmd, data);
+ break;
+ }
+
+ return (error);
+}
+
+STATIC void
+mvneta_init_locked(void *arg)
+{
+ struct mvneta_softc *sc;
+ struct ifnet *ifp;
+ uint32_t reg;
+ int q, cpu;
+
+ sc = arg;
+ ifp = sc->ifp;
+
+ if (!device_is_attached(sc->dev) ||
+ (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
+ return;
+
+ mvneta_disable_intr(sc);
+ callout_stop(&sc->tick_ch);
+
+ /* Get the latest mac address */
+ bcopy(IF_LLADDR(ifp), sc->enaddr, ETHER_ADDR_LEN);
+ mvneta_set_mac_address(sc, sc->enaddr);
+ mvneta_filter_setup(sc);
+
+ /* Start DMA Engine */
+ MVNETA_WRITE(sc, MVNETA_PRXINIT, 0x00000000);
+ MVNETA_WRITE(sc, MVNETA_PTXINIT, 0x00000000);
+ MVNETA_WRITE(sc, MVNETA_PACC, MVNETA_PACC_ACCELERATIONMODE_EDM);
+
+ /* Enable port */
+ reg = MVNETA_READ(sc, MVNETA_PMACC0);
+ reg |= MVNETA_PMACC0_PORTEN;
+ MVNETA_WRITE(sc, MVNETA_PMACC0, reg);
+
+ /* Allow access to each TXQ/RXQ from both CPU's */
+ for (cpu = 0; cpu < mp_ncpus; ++cpu)
+ MVNETA_WRITE(sc, MVNETA_PCP2Q(cpu),
+ MVNETA_PCP2Q_TXQEN_MASK | MVNETA_PCP2Q_RXQEN_MASK);
+
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ mvneta_rx_lockq(sc, q);
+ mvneta_rx_queue_refill(sc, q);
+ mvneta_rx_unlockq(sc, q);
+ }
+
+ if (!sc->phy_attached)
+ mvneta_linkup(sc);
+
+ /* Enable interrupt */
+ mvneta_enable_intr(sc);
+
+ /* Set Counter */
+ callout_schedule(&sc->tick_ch, hz);
+
+ ifp->if_drv_flags |= IFF_DRV_RUNNING;
+}
+
+STATIC void
+mvneta_init(void *arg)
+{
+ struct mvneta_softc *sc;
+
+ sc = arg;
+ mvneta_sc_lock(sc);
+ mvneta_init_locked(sc);
+ if (sc->phy_attached)
+ mii_mediachg(sc->mii);
+ mvneta_sc_unlock(sc);
+}
+
+/* ARGSUSED */
+STATIC void
+mvneta_stop_locked(struct mvneta_softc *sc)
+{
+ struct ifnet *ifp;
+ struct mvneta_rx_ring *rx;
+ struct mvneta_tx_ring *tx;
+ uint32_t reg;
+ int q;
+
+ ifp = sc->ifp;
+ if (ifp == NULL || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+ return;
+
+ mvneta_disable_intr(sc);
+
+ callout_stop(&sc->tick_ch);
+
+ ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
+
+ /* Link down */
+ if (sc->linkup == TRUE)
+ mvneta_linkdown(sc);
+
+ /* Reset the MAC Port Enable bit */
+ reg = MVNETA_READ(sc, MVNETA_PMACC0);
+ reg &= ~MVNETA_PMACC0_PORTEN;
+ MVNETA_WRITE(sc, MVNETA_PMACC0, reg);
+
+ /* Disable each of queue */
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ rx = MVNETA_RX_RING(sc, q);
+
+ mvneta_rx_lockq(sc, q);
+ mvneta_ring_flush_rx_queue(sc, q);
+ mvneta_rx_unlockq(sc, q);
+ }
+
+ /*
+ * Hold Reset state of DMA Engine
+ * (must write 0x0 to restart it)
+ */
+ MVNETA_WRITE(sc, MVNETA_PRXINIT, 0x00000001);
+ MVNETA_WRITE(sc, MVNETA_PTXINIT, 0x00000001);
+
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ tx = MVNETA_TX_RING(sc, q);
+
+ mvneta_tx_lockq(sc, q);
+ mvneta_ring_flush_tx_queue(sc, q);
+ mvneta_tx_unlockq(sc, q);
+ }
+}
+
+STATIC void
+mvneta_stop(struct mvneta_softc *sc)
+{
+
+ mvneta_sc_lock(sc);
+ mvneta_stop_locked(sc);
+ mvneta_sc_unlock(sc);
+}
+
+STATIC int
+mvneta_mediachange(struct ifnet *ifp)
+{
+ struct mvneta_softc *sc;
+
+ sc = ifp->if_softc;
+
+ if (!sc->phy_attached && !sc->use_inband_status) {
+ /* We shouldn't be here */
+ if_printf(ifp, "Cannot change media in fixed-link mode!\n");
+ return (0);
+ }
+
+ if (sc->use_inband_status) {
+ mvneta_update_media(sc, sc->mvneta_ifmedia.ifm_media);
+ return (0);
+ }
+
+ mvneta_sc_lock(sc);
+
+ /* Update PHY */
+ mii_mediachg(sc->mii);
+
+ mvneta_sc_unlock(sc);
+
+ return (0);
+}
+
+STATIC void
+mvneta_get_media(struct mvneta_softc *sc, struct ifmediareq *ifmr)
+{
+ uint32_t psr;
+
+ psr = MVNETA_READ(sc, MVNETA_PSR);
+
+ /* Speed */
+ if (psr & MVNETA_PSR_GMIISPEED)
+ ifmr->ifm_active = IFM_ETHER_SUBTYPE_SET(IFM_1000_T);
+ else if (psr & MVNETA_PSR_MIISPEED)
+ ifmr->ifm_active = IFM_ETHER_SUBTYPE_SET(IFM_100_TX);
+ else if (psr & MVNETA_PSR_LINKUP)
+ ifmr->ifm_active = IFM_ETHER_SUBTYPE_SET(IFM_10_T);
+
+ /* Duplex */
+ if (psr & MVNETA_PSR_FULLDX)
+ ifmr->ifm_active |= IFM_FDX;
+
+ /* Link */
+ ifmr->ifm_status = IFM_AVALID;
+ if (psr & MVNETA_PSR_LINKUP)
+ ifmr->ifm_status |= IFM_ACTIVE;
+}
+
+STATIC void
+mvneta_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+ struct mvneta_softc *sc;
+ struct mii_data *mii;
+
+ sc = ifp->if_softc;
+
+ if (!sc->phy_attached && !sc->use_inband_status) {
+ ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE;
+ return;
+ }
+
+ mvneta_sc_lock(sc);
+
+ if (sc->use_inband_status) {
+ mvneta_get_media(sc, ifmr);
+ mvneta_sc_unlock(sc);
+ return;
+ }
+
+ mii = sc->mii;
+ mii_pollstat(mii);
+
+ ifmr->ifm_active = mii->mii_media_active;
+ ifmr->ifm_status = mii->mii_media_status;
+
+ mvneta_sc_unlock(sc);
+}
+
+/*
+ * Link State Notify
+ */
+STATIC void
+mvneta_update_autoneg(struct mvneta_softc *sc, int enable)
+{
+ int reg;
+
+ if (enable) {
+ reg = MVNETA_READ(sc, MVNETA_PANC);
+ reg &= ~(MVNETA_PANC_FORCELINKFAIL | MVNETA_PANC_FORCELINKPASS |
+ MVNETA_PANC_ANFCEN);
+ reg |= MVNETA_PANC_ANDUPLEXEN | MVNETA_PANC_ANSPEEDEN |
+ MVNETA_PANC_INBANDANEN;
+ MVNETA_WRITE(sc, MVNETA_PANC, reg);
+
+ reg = MVNETA_READ(sc, MVNETA_PMACC2);
+ reg |= MVNETA_PMACC2_INBANDANMODE;
+ MVNETA_WRITE(sc, MVNETA_PMACC2, reg);
+
+ reg = MVNETA_READ(sc, MVNETA_PSOMSCD);
+ reg |= MVNETA_PSOMSCD_ENABLE;
+ MVNETA_WRITE(sc, MVNETA_PSOMSCD, reg);
+ } else {
+ reg = MVNETA_READ(sc, MVNETA_PANC);
+ reg &= ~(MVNETA_PANC_FORCELINKFAIL | MVNETA_PANC_FORCELINKPASS |
+ MVNETA_PANC_ANDUPLEXEN | MVNETA_PANC_ANSPEEDEN |
+ MVNETA_PANC_INBANDANEN);
+ MVNETA_WRITE(sc, MVNETA_PANC, reg);
+
+ reg = MVNETA_READ(sc, MVNETA_PMACC2);
+ reg &= ~MVNETA_PMACC2_INBANDANMODE;
+ MVNETA_WRITE(sc, MVNETA_PMACC2, reg);
+
+ reg = MVNETA_READ(sc, MVNETA_PSOMSCD);
+ reg &= ~MVNETA_PSOMSCD_ENABLE;
+ MVNETA_WRITE(sc, MVNETA_PSOMSCD, reg);
+ }
+}
+
+STATIC int
+mvneta_update_media(struct mvneta_softc *sc, int media)
+{
+ int reg, err;
+ boolean_t running;
+
+ err = 0;
+
+ mvneta_sc_lock(sc);
+
+ mvneta_linkreset(sc);
+
+ running = (sc->ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
+ if (running)
+ mvneta_stop_locked(sc);
+
+ sc->autoneg = (IFM_SUBTYPE(media) == IFM_AUTO);
+
+ if (sc->use_inband_status)
+ mvneta_update_autoneg(sc, IFM_SUBTYPE(media) == IFM_AUTO);
+
+ mvneta_update_eee(sc);
+ mvneta_update_fc(sc);
+
+ if (IFM_SUBTYPE(media) != IFM_AUTO) {
+ reg = MVNETA_READ(sc, MVNETA_PANC);
+ reg &= ~(MVNETA_PANC_SETGMIISPEED |
+ MVNETA_PANC_SETMIISPEED |
+ MVNETA_PANC_SETFULLDX);
+ if (IFM_SUBTYPE(media) == IFM_1000_T ||
+ IFM_SUBTYPE(media) == IFM_2500_T) {
+ if ((media & IFM_FDX) == 0) {
+ device_printf(sc->dev,
+ "%s half-duplex unsupported\n",
+ IFM_SUBTYPE(media) == IFM_1000_T ?
+ "1000Base-T" :
+ "2500Base-T");
+ err = EINVAL;
+ goto out;
+ }
+ reg |= MVNETA_PANC_SETGMIISPEED;
+ } else if (IFM_SUBTYPE(media) == IFM_100_TX)
+ reg |= MVNETA_PANC_SETMIISPEED;
+
+ if (media & IFM_FDX)
+ reg |= MVNETA_PANC_SETFULLDX;
+
+ MVNETA_WRITE(sc, MVNETA_PANC, reg);
+ }
+out:
+ if (running)
+ mvneta_init_locked(sc);
+ mvneta_sc_unlock(sc);
+ return (err);
+}
+
+STATIC void
+mvneta_adjust_link(struct mvneta_softc *sc)
+{
+ boolean_t phy_linkup;
+ int reg;
+
+ /* Update eee/fc */
+ mvneta_update_eee(sc);
+ mvneta_update_fc(sc);
+
+ /* Check for link change */
+ phy_linkup = (sc->mii->mii_media_status &
+ (IFM_AVALID | IFM_ACTIVE)) == (IFM_AVALID | IFM_ACTIVE);
+
+ if (sc->linkup != phy_linkup)
+ mvneta_linkupdate(sc, phy_linkup);
+
+ /* Don't update media on disabled link */
+ if (!phy_linkup )
+ return;
+
+ /* Check for media type change */
+ if (sc->mvneta_media != sc->mii->mii_media_active) {
+ sc->mvneta_media = sc->mii->mii_media_active;
+
+ reg = MVNETA_READ(sc, MVNETA_PANC);
+ reg &= ~(MVNETA_PANC_SETGMIISPEED |
+ MVNETA_PANC_SETMIISPEED |
+ MVNETA_PANC_SETFULLDX);
+ if (IFM_SUBTYPE(sc->mvneta_media) == IFM_1000_T ||
+ IFM_SUBTYPE(sc->mvneta_media) == IFM_2500_T) {
+ reg |= MVNETA_PANC_SETGMIISPEED;
+ } else if (IFM_SUBTYPE(sc->mvneta_media) == IFM_100_TX)
+ reg |= MVNETA_PANC_SETMIISPEED;
+
+ if (sc->mvneta_media & IFM_FDX)
+ reg |= MVNETA_PANC_SETFULLDX;
+
+ MVNETA_WRITE(sc, MVNETA_PANC, reg);
+ }
+}
+
+STATIC void
+mvneta_link_isr(struct mvneta_softc *sc)
+{
+ int linkup;
+
+ KASSERT_SC_MTX(sc);
+
+ linkup = MVNETA_IS_LINKUP(sc) ? TRUE : FALSE;
+ if (sc->linkup == linkup)
+ return;
+
+ if (linkup == TRUE)
+ mvneta_linkup(sc);
+ else
+ mvneta_linkdown(sc);
+
+#ifdef DEBUG
+ log(LOG_DEBUG,
+ "%s: link %s\n", device_xname(sc->dev), linkup ? "up" : "down");
+#endif
+}
+
+STATIC void
+mvneta_linkupdate(struct mvneta_softc *sc, boolean_t linkup)
+{
+
+ KASSERT_SC_MTX(sc);
+
+ if (linkup == TRUE)
+ mvneta_linkup(sc);
+ else
+ mvneta_linkdown(sc);
+
+#ifdef DEBUG
+ log(LOG_DEBUG,
+ "%s: link %s\n", device_xname(sc->dev), linkup ? "up" : "down");
+#endif
+}
+
+STATIC void
+mvneta_update_eee(struct mvneta_softc *sc)
+{
+ uint32_t reg;
+
+ KASSERT_SC_MTX(sc);
+
+ /* set EEE parameters */
+ reg = MVNETA_READ(sc, MVNETA_LPIC1);
+ if (sc->cf_lpi)
+ reg |= MVNETA_LPIC1_LPIRE;
+ else
+ reg &= ~MVNETA_LPIC1_LPIRE;
+ MVNETA_WRITE(sc, MVNETA_LPIC1, reg);
+}
+
+STATIC void
+mvneta_update_fc(struct mvneta_softc *sc)
+{
+ uint32_t reg;
+
+ KASSERT_SC_MTX(sc);
+
+ reg = MVNETA_READ(sc, MVNETA_PANC);
+ if (sc->cf_fc) {
+ /* Flow control negotiation */
+ reg |= MVNETA_PANC_PAUSEADV;
+ reg |= MVNETA_PANC_ANFCEN;
+ } else {
+ /* Disable flow control negotiation */
+ reg &= ~MVNETA_PANC_PAUSEADV;
+ reg &= ~MVNETA_PANC_ANFCEN;
+ }
+
+ MVNETA_WRITE(sc, MVNETA_PANC, reg);
+}
+
+STATIC void
+mvneta_linkup(struct mvneta_softc *sc)
+{
+ uint32_t reg;
+
+ KASSERT_SC_MTX(sc);
+
+ if (!sc->use_inband_status) {
+ reg = MVNETA_READ(sc, MVNETA_PANC);
+ reg |= MVNETA_PANC_FORCELINKPASS;
+ reg &= ~MVNETA_PANC_FORCELINKFAIL;
+ MVNETA_WRITE(sc, MVNETA_PANC, reg);
+ }
+
+ mvneta_qflush(sc->ifp);
+ mvneta_portup(sc);
+ sc->linkup = TRUE;
+ if_link_state_change(sc->ifp, LINK_STATE_UP);
+}
+
+STATIC void
+mvneta_linkdown(struct mvneta_softc *sc)
+{
+ uint32_t reg;
+
+ KASSERT_SC_MTX(sc);
+
+ if (!sc->use_inband_status) {
+ reg = MVNETA_READ(sc, MVNETA_PANC);
+ reg &= ~MVNETA_PANC_FORCELINKPASS;
+ reg |= MVNETA_PANC_FORCELINKFAIL;
+ MVNETA_WRITE(sc, MVNETA_PANC, reg);
+ }
+
+ mvneta_portdown(sc);
+ mvneta_qflush(sc->ifp);
+ sc->linkup = FALSE;
+ if_link_state_change(sc->ifp, LINK_STATE_DOWN);
+}
+
+STATIC void
+mvneta_linkreset(struct mvneta_softc *sc)
+{
+ struct mii_softc *mii;
+
+ if (sc->phy_attached) {
+ /* Force reset PHY */
+ mii = LIST_FIRST(&sc->mii->mii_phys);
+ if (mii)
+ mii_phy_reset(mii);
+ }
+}
+
+/*
+ * Tx Subroutines
+ */
+STATIC int
+mvneta_tx_queue(struct mvneta_softc *sc, struct mbuf **mbufp, int q)
+{
+ struct ifnet *ifp;
+ bus_dma_segment_t txsegs[MVNETA_TX_SEGLIMIT];
+ struct mbuf *mtmp, *mbuf;
+ struct mvneta_tx_ring *tx;
+ struct mvneta_buf *txbuf;
+ struct mvneta_tx_desc *t;
+ uint32_t ptxsu;
+ int start, used, error, i, txnsegs;
+
+ mbuf = *mbufp;
+ tx = MVNETA_TX_RING(sc, q);
+ DASSERT(tx->used >= 0);
+ DASSERT(tx->used <= MVNETA_TX_RING_CNT);
+ t = NULL;
+ ifp = sc->ifp;
+
+ if (__predict_false(mbuf->m_flags & M_VLANTAG)) {
+ mbuf = ether_vlanencap(mbuf, mbuf->m_pkthdr.ether_vtag);
+ if (mbuf == NULL) {
+ tx->drv_error++;
+ *mbufp = NULL;
+ return (ENOBUFS);
+ }
+ mbuf->m_flags &= ~M_VLANTAG;
+ *mbufp = mbuf;
+ }
+
+ if (__predict_false(mbuf->m_next != NULL &&
+ (mbuf->m_pkthdr.csum_flags &
+ (CSUM_IP | CSUM_TCP | CSUM_UDP)) != 0)) {
+ if (M_WRITABLE(mbuf) == 0) {
+ mtmp = m_dup(mbuf, M_NOWAIT);
+ m_freem(mbuf);
+ if (mtmp == NULL) {
+ tx->drv_error++;
+ *mbufp = NULL;
+ return (ENOBUFS);
+ }
+ *mbufp = mbuf = mtmp;
+ }
+ }
+
+ /* load mbuf using dmamap of 1st descriptor */
+ txbuf = &tx->txbuf[tx->cpu];
+ error = bus_dmamap_load_mbuf_sg(sc->txmbuf_dtag,
+ txbuf->dmap, mbuf, txsegs, &txnsegs,
+ BUS_DMA_NOWAIT);
+ if (__predict_false(error != 0)) {
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s:%u bus_dmamap_load_mbuf_sg error=%d", ifp->if_xname, q, error);
+#endif
+ /* This is the only recoverable error (except EFBIG). */
+ if (error != ENOMEM) {
+ tx->drv_error++;
+ m_freem(mbuf);
+ *mbufp = NULL;
+ return (ENOBUFS);
+ }
+ return (error);
+ }
+
+ if (__predict_false(txnsegs <= 0
+ || (txnsegs + tx->used) > MVNETA_TX_RING_CNT)) {
+ /* we have no enough descriptors or mbuf is broken */
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s:%u not enough descriptors txnsegs=%d",
+ ifp->if_xname, q, txnsegs);
+#endif
+ bus_dmamap_unload(sc->txmbuf_dtag, txbuf->dmap);
+ return (ENOBUFS);
+ }
+ DASSERT(txbuf->m == NULL);
+
+ /* remember mbuf using 1st descriptor */
+ txbuf->m = mbuf;
+ bus_dmamap_sync(sc->txmbuf_dtag, txbuf->dmap,
+ BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
+
+ /* load to tx descriptors */
+ start = tx->cpu;
+ used = 0;
+ for (i = 0; i < txnsegs; i++) {
+ t = &tx->desc[tx->cpu];
+ t->command = 0;
+ t->l4ichk = 0;
+ t->flags = 0;
+ if (__predict_true(i == 0)) {
+ /* 1st descriptor */
+ t->command |= MVNETA_TX_CMD_W_PACKET_OFFSET(0);
+ t->command |= MVNETA_TX_CMD_F;
+ mvneta_tx_set_csumflag(ifp, t, mbuf);
+ }
+ t->bufptr_pa = txsegs[i].ds_addr;
+ t->bytecnt = txsegs[i].ds_len;
+ tx->cpu = tx_counter_adv(tx->cpu, 1);
+
+ tx->used++;
+ used++;
+ }
+ /* t is last descriptor here */
+ DASSERT(t != NULL);
+ t->command |= MVNETA_TX_CMD_L|MVNETA_TX_CMD_PADDING;
+
+ bus_dmamap_sync(sc->tx_dtag, tx->desc_map,
+ BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
+
+ while (__predict_false(used > 255)) {
+ ptxsu = MVNETA_PTXSU_NOWD(255);
+ MVNETA_WRITE(sc, MVNETA_PTXSU(q), ptxsu);
+ used -= 255;
+ }
+ if (__predict_true(used > 0)) {
+ ptxsu = MVNETA_PTXSU_NOWD(used);
+ MVNETA_WRITE(sc, MVNETA_PTXSU(q), ptxsu);
+ }
+ return (0);
+}
+
+STATIC void
+mvneta_tx_set_csumflag(struct ifnet *ifp,
+ struct mvneta_tx_desc *t, struct mbuf *m)
+{
+ struct ether_header *eh;
+ int csum_flags;
+ uint32_t iphl, ipoff;
+ struct ip *ip;
+
+ iphl = ipoff = 0;
+ csum_flags = ifp->if_hwassist & m->m_pkthdr.csum_flags;
+ eh = mtod(m, struct ether_header *);
+ switch (ntohs(eh->ether_type)) {
+ case ETHERTYPE_IP:
+ ipoff = ETHER_HDR_LEN;
+ break;
+ case ETHERTYPE_IPV6:
+ return;
+ case ETHERTYPE_VLAN:
+ ipoff = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
+ break;
+ }
+
+ if (__predict_true(csum_flags & (CSUM_IP|CSUM_IP_TCP|CSUM_IP_UDP))) {
+ ip = (struct ip *)(m->m_data + ipoff);
+ iphl = ip->ip_hl<<2;
+ t->command |= MVNETA_TX_CMD_L3_IP4;
+ } else {
+ t->command |= MVNETA_TX_CMD_L4_CHECKSUM_NONE;
+ return;
+ }
+
+
+ /* L3 */
+ if (csum_flags & CSUM_IP) {
+ t->command |= MVNETA_TX_CMD_IP4_CHECKSUM;
+ }
+
+ /* L4 */
+ if (csum_flags & CSUM_IP_TCP) {
+ t->command |= MVNETA_TX_CMD_L4_CHECKSUM_NOFRAG;
+ t->command |= MVNETA_TX_CMD_L4_TCP;
+ } else if (csum_flags & CSUM_IP_UDP) {
+ t->command |= MVNETA_TX_CMD_L4_CHECKSUM_NOFRAG;
+ t->command |= MVNETA_TX_CMD_L4_UDP;
+ } else
+ t->command |= MVNETA_TX_CMD_L4_CHECKSUM_NONE;
+
+ t->l4ichk = 0;
+ t->command |= MVNETA_TX_CMD_IP_HEADER_LEN(iphl >> 2);
+ t->command |= MVNETA_TX_CMD_L3_OFFSET(ipoff);
+}
+
+STATIC void
+mvneta_tx_queue_complete(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_tx_ring *tx;
+ struct mvneta_buf *txbuf;
+ struct mvneta_tx_desc *t;
+ uint32_t ptxs, ptxsu, ndesc;
+ int i;
+
+ KASSERT_TX_MTX(sc, q);
+
+ tx = MVNETA_TX_RING(sc, q);
+ if (__predict_false(tx->queue_status == MVNETA_QUEUE_DISABLED))
+ return;
+
+ ptxs = MVNETA_READ(sc, MVNETA_PTXS(q));
+ ndesc = MVNETA_PTXS_GET_TBC(ptxs);
+
+ if (__predict_false(ndesc == 0)) {
+ if (tx->used == 0)
+ tx->queue_status = MVNETA_QUEUE_IDLE;
+ else if (tx->queue_status == MVNETA_QUEUE_WORKING &&
+ ((ticks - tx->watchdog_time) > MVNETA_WATCHDOG))
+ tx->queue_hung = TRUE;
+ return;
+ }
+
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s:%u tx_complete begin ndesc=%u",
+ sc->ifp->if_xname, q, ndesc);
+#endif
+
+ bus_dmamap_sync(sc->tx_dtag, tx->desc_map,
+ BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
+
+ for (i = 0; i < ndesc; i++) {
+ t = &tx->desc[tx->dma];
+#ifdef MVNETA_KTR
+ if (t->flags & MVNETA_TX_F_ES)
+ CTR3(KTR_SPARE2, "%s tx error queue %d desc %d",
+ sc->ifp->if_xname, q, tx->dma);
+#endif
+ txbuf = &tx->txbuf[tx->dma];
+ if (__predict_true(txbuf->m != NULL)) {
+ DASSERT((t->command & MVNETA_TX_CMD_F) != 0);
+ bus_dmamap_unload(sc->txmbuf_dtag, txbuf->dmap);
+ m_freem(txbuf->m);
+ txbuf->m = NULL;
+ }
+ else
+ DASSERT((t->flags & MVNETA_TX_CMD_F) == 0);
+ tx->dma = tx_counter_adv(tx->dma, 1);
+ tx->used--;
+ }
+ DASSERT(tx->used >= 0);
+ DASSERT(tx->used <= MVNETA_TX_RING_CNT);
+ while (__predict_false(ndesc > 255)) {
+ ptxsu = MVNETA_PTXSU_NORB(255);
+ MVNETA_WRITE(sc, MVNETA_PTXSU(q), ptxsu);
+ ndesc -= 255;
+ }
+ if (__predict_true(ndesc > 0)) {
+ ptxsu = MVNETA_PTXSU_NORB(ndesc);
+ MVNETA_WRITE(sc, MVNETA_PTXSU(q), ptxsu);
+ }
+#ifdef MVNETA_KTR
+ CTR5(KTR_SPARE2, "%s:%u tx_complete tx_cpu=%d tx_dma=%d tx_used=%d",
+ sc->ifp->if_xname, q, tx->cpu, tx->dma, tx->used);
+#endif
+
+ tx->watchdog_time = ticks;
+
+ if (tx->used == 0)
+ tx->queue_status = MVNETA_QUEUE_IDLE;
+}
+
+/*
+ * Do a final TX complete when TX is idle.
+ */
+STATIC void
+mvneta_tx_drain(struct mvneta_softc *sc)
+{
+ struct mvneta_tx_ring *tx;
+ int q;
+
+ /*
+ * Handle trailing mbuf on TX queue.
+ * Check is done lockess to avoid TX path contention.
+ */
+ for (q = 0; q < MVNETA_TX_QNUM_MAX; q++) {
+ tx = MVNETA_TX_RING(sc, q);
+ if ((ticks - tx->watchdog_time) > MVNETA_WATCHDOG_TXCOMP &&
+ tx->used > 0) {
+ mvneta_tx_lockq(sc, q);
+ mvneta_tx_queue_complete(sc, q);
+ mvneta_tx_unlockq(sc, q);
+ }
+ }
+}
+
+/*
+ * Rx Subroutines
+ */
+STATIC int
+mvneta_rx(struct mvneta_softc *sc, int q, int count)
+{
+ uint32_t prxs, npkt;
+ int more;
+
+ more = 0;
+ mvneta_rx_lockq(sc, q);
+ prxs = MVNETA_READ(sc, MVNETA_PRXS(q));
+ npkt = MVNETA_PRXS_GET_ODC(prxs);
+ if (__predict_false(npkt == 0))
+ goto out;
+
+ if (count > 0 && npkt > count) {
+ more = 1;
+ npkt = count;
+ }
+ mvneta_rx_queue(sc, q, npkt);
+out:
+ mvneta_rx_unlockq(sc, q);
+ return more;
+}
+
+/*
+ * Helper routine for updating PRXSU register of a given queue.
+ * Handles number of processed descriptors bigger than maximum acceptable value.
+ */
+STATIC __inline void
+mvneta_prxsu_update(struct mvneta_softc *sc, int q, int processed)
+{
+ uint32_t prxsu;
+
+ while (__predict_false(processed > 255)) {
+ prxsu = MVNETA_PRXSU_NOOFPROCESSEDDESCRIPTORS(255);
+ MVNETA_WRITE(sc, MVNETA_PRXSU(q), prxsu);
+ processed -= 255;
+ }
+ prxsu = MVNETA_PRXSU_NOOFPROCESSEDDESCRIPTORS(processed);
+ MVNETA_WRITE(sc, MVNETA_PRXSU(q), prxsu);
+}
+
+static __inline void
+mvneta_prefetch(void *p)
+{
+
+ __builtin_prefetch(p);
+}
+
+STATIC void
+mvneta_rx_queue(struct mvneta_softc *sc, int q, int npkt)
+{
+ struct ifnet *ifp;
+ struct mvneta_rx_ring *rx;
+ struct mvneta_rx_desc *r;
+ struct mvneta_buf *rxbuf;
+ struct mbuf *m;
+ struct lro_ctrl *lro;
+ struct lro_entry *queued;
+ void *pktbuf;
+ int i, pktlen, processed, ndma;
+
+ KASSERT_RX_MTX(sc, q);
+
+ ifp = sc->ifp;
+ rx = MVNETA_RX_RING(sc, q);
+ processed = 0;
+
+ if (__predict_false(rx->queue_status == MVNETA_QUEUE_DISABLED))
+ return;
+
+ bus_dmamap_sync(sc->rx_dtag, rx->desc_map,
+ BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
+
+ for (i = 0; i < npkt; i++) {
+ /* Prefetch next desc, rxbuf. */
+ ndma = rx_counter_adv(rx->dma, 1);
+ mvneta_prefetch(&rx->desc[ndma]);
+ mvneta_prefetch(&rx->rxbuf[ndma]);
+
+ /* get descriptor and packet */
+ r = &rx->desc[rx->dma];
+ rxbuf = &rx->rxbuf[rx->dma];
+ m = rxbuf->m;
+ rxbuf->m = NULL;
+ DASSERT(m != NULL);
+ bus_dmamap_sync(sc->rxbuf_dtag, rxbuf->dmap,
+ BUS_DMASYNC_POSTREAD);
+ bus_dmamap_unload(sc->rxbuf_dtag, rxbuf->dmap);
+ /* Prefetch mbuf header. */
+ mvneta_prefetch(m);
+
+ processed++;
+ /* Drop desc with error status or not in a single buffer. */
+ DASSERT((r->status & (MVNETA_RX_F|MVNETA_RX_L)) ==
+ (MVNETA_RX_F|MVNETA_RX_L));
+ if (__predict_false((r->status & MVNETA_RX_ES) ||
+ (r->status & (MVNETA_RX_F|MVNETA_RX_L)) !=
+ (MVNETA_RX_F|MVNETA_RX_L)))
+ goto rx_error;
+
+ /*
+ * [ OFF | MH | PKT | CRC ]
+ * bytecnt cover MH, PKT, CRC
+ */
+ pktlen = r->bytecnt - ETHER_CRC_LEN - MVNETA_HWHEADER_SIZE;
+ pktbuf = (uint8_t *)r->bufptr_va + MVNETA_PACKET_OFFSET +
+ MVNETA_HWHEADER_SIZE;
+
+ /* Prefetch mbuf data. */
+ mvneta_prefetch(pktbuf);
+
+ /* Write value to mbuf (avoid read). */
+ m->m_data = pktbuf;
+ m->m_len = m->m_pkthdr.len = pktlen;
+ m->m_pkthdr.rcvif = ifp;
+ mvneta_rx_set_csumflag(ifp, r, m);
+
+ /* Increase rx_dma before releasing the lock. */
+ rx->dma = ndma;
+
+ if (__predict_false(rx->lro_enabled &&
+ ((r->status & MVNETA_RX_L3_IP) != 0) &&
+ ((r->status & MVNETA_RX_L4_MASK) == MVNETA_RX_L4_TCP) &&
+ (m->m_pkthdr.csum_flags &
+ (CSUM_DATA_VALID | CSUM_PSEUDO_HDR)) ==
+ (CSUM_DATA_VALID | CSUM_PSEUDO_HDR))) {
+ if (rx->lro.lro_cnt != 0) {
+ if (tcp_lro_rx(&rx->lro, m, 0) == 0)
+ goto rx_done;
+ }
+ }
+
+ mvneta_rx_unlockq(sc, q);
+ (*ifp->if_input)(ifp, m);
+ mvneta_rx_lockq(sc, q);
+ /*
+ * Check whether this queue has been disabled in the
+ * meantime. If yes, then clear LRO and exit.
+ */
+ if(__predict_false(rx->queue_status == MVNETA_QUEUE_DISABLED))
+ goto rx_lro;
+rx_done:
+ /* Refresh receive ring to avoid stall and minimize jitter. */
+ if (processed >= MVNETA_RX_REFILL_COUNT) {
+ mvneta_prxsu_update(sc, q, processed);
+ mvneta_rx_queue_refill(sc, q);
+ processed = 0;
+ }
+ continue;
+rx_error:
+ m_freem(m);
+ rx->dma = ndma;
+ /* Refresh receive ring to avoid stall and minimize jitter. */
+ if (processed >= MVNETA_RX_REFILL_COUNT) {
+ mvneta_prxsu_update(sc, q, processed);
+ mvneta_rx_queue_refill(sc, q);
+ processed = 0;
+ }
+ }
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s:%u %u packets received", ifp->if_xname, q, npkt);
+#endif
+ /* DMA status update */
+ mvneta_prxsu_update(sc, q, processed);
+ /* Refill the rest of buffers if there are any to refill */
+ mvneta_rx_queue_refill(sc, q);
+
+rx_lro:
+ /*
+ * Flush any outstanding LRO work
+ */
+ lro = &rx->lro;
+ while (__predict_false((queued = LIST_FIRST(&lro->lro_active)) != NULL)) {
+ LIST_REMOVE(LIST_FIRST((&lro->lro_active)), next);
+ tcp_lro_flush(lro, queued);
+ }
+}
+
+STATIC void
+mvneta_rx_buf_free(struct mvneta_softc *sc, struct mvneta_buf *rxbuf)
+{
+
+ bus_dmamap_unload(sc->rxbuf_dtag, rxbuf->dmap);
+ /* This will remove all data at once */
+ m_freem(rxbuf->m);
+}
+
+STATIC void
+mvneta_rx_queue_refill(struct mvneta_softc *sc, int q)
+{
+ struct mvneta_rx_ring *rx;
+ struct mvneta_rx_desc *r;
+ struct mvneta_buf *rxbuf;
+ bus_dma_segment_t segs;
+ struct mbuf *m;
+ uint32_t prxs, prxsu, ndesc;
+ int npkt, refill, nsegs, error;
+
+ KASSERT_RX_MTX(sc, q);
+
+ rx = MVNETA_RX_RING(sc, q);
+ prxs = MVNETA_READ(sc, MVNETA_PRXS(q));
+ ndesc = MVNETA_PRXS_GET_NODC(prxs) + MVNETA_PRXS_GET_ODC(prxs);
+ refill = MVNETA_RX_RING_CNT - ndesc;
+#ifdef MVNETA_KTR
+ CTR3(KTR_SPARE2, "%s:%u refill %u packets", sc->ifp->if_xname, q,
+ refill);
+#endif
+ if (__predict_false(refill <= 0))
+ return;
+
+ for (npkt = 0; npkt < refill; npkt++) {
+ rxbuf = &rx->rxbuf[rx->cpu];
+ m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
+ if (__predict_false(m == NULL)) {
+ error = ENOBUFS;
+ break;
+ }
+ m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
+
+ error = bus_dmamap_load_mbuf_sg(sc->rxbuf_dtag, rxbuf->dmap,
+ m, &segs, &nsegs, BUS_DMA_NOWAIT);
+ if (__predict_false(error != 0 || nsegs != 1)) {
+ KASSERT(1, ("Failed to load Rx mbuf DMA map"));
+ m_freem(m);
+ break;
+ }
+
+ /* Add the packet to the ring */
+ rxbuf->m = m;
+ r = &rx->desc[rx->cpu];
+ r->bufptr_pa = segs.ds_addr;
+ r->bufptr_va = (uint32_t)m->m_data;
+
+ rx->cpu = rx_counter_adv(rx->cpu, 1);
+ }
+ if (npkt == 0) {
+ if (refill == MVNETA_RX_RING_CNT)
+ rx->needs_refill = TRUE;
+ return;
+ }
+
+ rx->needs_refill = FALSE;
+ bus_dmamap_sync(sc->rx_dtag, rx->desc_map, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
+
+ while (__predict_false(npkt > 255)) {
+ prxsu = MVNETA_PRXSU_NOOFNEWDESCRIPTORS(255);
+ MVNETA_WRITE(sc, MVNETA_PRXSU(q), prxsu);
+ npkt -= 255;
+ }
+ if (__predict_true(npkt > 0)) {
+ prxsu = MVNETA_PRXSU_NOOFNEWDESCRIPTORS(npkt);
+ MVNETA_WRITE(sc, MVNETA_PRXSU(q), prxsu);
+ }
+}
+
+STATIC __inline void
+mvneta_rx_set_csumflag(struct ifnet *ifp,
+ struct mvneta_rx_desc *r, struct mbuf *m)
+{
+ uint32_t csum_flags;
+
+ csum_flags = 0;
+ if (__predict_false((r->status &
+ (MVNETA_RX_IP_HEADER_OK|MVNETA_RX_L3_IP)) == 0))
+ return; /* not a IP packet */
+
+ /* L3 */
+ if (__predict_true((r->status & MVNETA_RX_IP_HEADER_OK) ==
+ MVNETA_RX_IP_HEADER_OK))
+ csum_flags |= CSUM_L3_CALC|CSUM_L3_VALID;
+
+ if (__predict_true((r->status & (MVNETA_RX_IP_HEADER_OK|MVNETA_RX_L3_IP)) ==
+ (MVNETA_RX_IP_HEADER_OK|MVNETA_RX_L3_IP))) {
+ /* L4 */
+ switch (r->status & MVNETA_RX_L4_MASK) {
+ case MVNETA_RX_L4_TCP:
+ case MVNETA_RX_L4_UDP:
+ csum_flags |= CSUM_L4_CALC;
+ if (__predict_true((r->status &
+ MVNETA_RX_L4_CHECKSUM_OK) == MVNETA_RX_L4_CHECKSUM_OK)) {
+ csum_flags |= CSUM_L4_VALID;
+ m->m_pkthdr.csum_data = htons(0xffff);
+ }
+ break;
+ case MVNETA_RX_L4_OTH:
+ default:
+ break;
+ }
+ }
+ m->m_pkthdr.csum_flags = csum_flags;
+}
+
+/*
+ * MAC address filter
+ */
+STATIC void
+mvneta_filter_setup(struct mvneta_softc *sc)
+{
+ struct ifnet *ifp;
+ uint32_t dfut[MVNETA_NDFUT], dfsmt[MVNETA_NDFSMT], dfomt[MVNETA_NDFOMT];
+ uint32_t pxc;
+ int i;
+
+ KASSERT_SC_MTX(sc);
+
+ memset(dfut, 0, sizeof(dfut));
+ memset(dfsmt, 0, sizeof(dfsmt));
+ memset(dfomt, 0, sizeof(dfomt));
+
+ ifp = sc->ifp;
+ ifp->if_flags |= IFF_ALLMULTI;
+ if (ifp->if_flags & (IFF_ALLMULTI|IFF_PROMISC)) {
+ for (i = 0; i < MVNETA_NDFSMT; i++) {
+ dfsmt[i] = dfomt[i] =
+ MVNETA_DF(0, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS) |
+ MVNETA_DF(1, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS) |
+ MVNETA_DF(2, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS) |
+ MVNETA_DF(3, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS);
+ }
+ }
+
+ pxc = MVNETA_READ(sc, MVNETA_PXC);
+ pxc &= ~(MVNETA_PXC_UPM | MVNETA_PXC_RXQ_MASK | MVNETA_PXC_RXQARP_MASK |
+ MVNETA_PXC_TCPQ_MASK | MVNETA_PXC_UDPQ_MASK | MVNETA_PXC_BPDUQ_MASK);
+ pxc |= MVNETA_PXC_RXQ(MVNETA_RX_QNUM_MAX-1);
+ pxc |= MVNETA_PXC_RXQARP(MVNETA_RX_QNUM_MAX-1);
+ pxc |= MVNETA_PXC_TCPQ(MVNETA_RX_QNUM_MAX-1);
+ pxc |= MVNETA_PXC_UDPQ(MVNETA_RX_QNUM_MAX-1);
+ pxc |= MVNETA_PXC_BPDUQ(MVNETA_RX_QNUM_MAX-1);
+ pxc |= MVNETA_PXC_RB | MVNETA_PXC_RBIP | MVNETA_PXC_RBARP;
+ if (ifp->if_flags & IFF_BROADCAST) {
+ pxc &= ~(MVNETA_PXC_RB | MVNETA_PXC_RBIP | MVNETA_PXC_RBARP);
+ }
+ if (ifp->if_flags & IFF_PROMISC) {
+ pxc |= MVNETA_PXC_UPM;
+ }
+ MVNETA_WRITE(sc, MVNETA_PXC, pxc);
+
+ /* Set Destination Address Filter Unicast Table */
+ if (ifp->if_flags & IFF_PROMISC) {
+ /* pass all unicast addresses */
+ for (i = 0; i < MVNETA_NDFUT; i++) {
+ dfut[i] =
+ MVNETA_DF(0, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS) |
+ MVNETA_DF(1, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS) |
+ MVNETA_DF(2, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS) |
+ MVNETA_DF(3, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS);
+ }
+ } else {
+ i = sc->enaddr[5] & 0xf; /* last nibble */
+ dfut[i>>2] = MVNETA_DF(i&3, MVNETA_DF_QUEUE(0) | MVNETA_DF_PASS);
+ }
+ MVNETA_WRITE_REGION(sc, MVNETA_DFUT(0), dfut, MVNETA_NDFUT);
+
+ /* Set Destination Address Filter Multicast Tables */
+ MVNETA_WRITE_REGION(sc, MVNETA_DFSMT(0), dfsmt, MVNETA_NDFSMT);
+ MVNETA_WRITE_REGION(sc, MVNETA_DFOMT(0), dfomt, MVNETA_NDFOMT);
+}
+
+/*
+ * sysctl(9)
+ */
+STATIC int
+sysctl_read_mib(SYSCTL_HANDLER_ARGS)
+{
+ struct mvneta_sysctl_mib *arg;
+ struct mvneta_softc *sc;
+ uint64_t val;
+
+ arg = (struct mvneta_sysctl_mib *)arg1;
+ if (arg == NULL)
+ return (EINVAL);
+
+ sc = arg->sc;
+ if (sc == NULL)
+ return (EINVAL);
+ if (arg->index < 0 || arg->index > MVNETA_PORTMIB_NOCOUNTER)
+ return (EINVAL);
+
+ mvneta_sc_lock(sc);
+ val = arg->counter;
+ mvneta_sc_unlock(sc);
+ return sysctl_handle_64(oidp, &val, 0, req);
+}
+
+
+STATIC int
+sysctl_clear_mib(SYSCTL_HANDLER_ARGS)
+{
+ struct mvneta_softc *sc;
+ int err, val;
+
+ val = 0;
+ sc = (struct mvneta_softc *)arg1;
+ if (sc == NULL)
+ return (EINVAL);
+
+ err = sysctl_handle_int(oidp, &val, 0, req);
+ if (err != 0)
+ return (err);
+
+ if (val < 0 || val > 1)
+ return (EINVAL);
+
+ if (val == 1) {
+ mvneta_sc_lock(sc);
+ mvneta_clear_mib(sc);
+ mvneta_sc_unlock(sc);
+ }
+
+ return (0);
+}
+
+STATIC int
+sysctl_set_queue_rxthtime(SYSCTL_HANDLER_ARGS)
+{
+ struct mvneta_sysctl_queue *arg;
+ struct mvneta_rx_ring *rx;
+ struct mvneta_softc *sc;
+ uint32_t reg, time_mvtclk;
+ int err, time_us;
+
+ rx = NULL;
+ arg = (struct mvneta_sysctl_queue *)arg1;
+ if (arg == NULL)
+ return (EINVAL);
+ if (arg->queue < 0 || arg->queue > MVNETA_RX_RING_CNT)
+ return (EINVAL);
+ if (arg->rxtx != MVNETA_SYSCTL_RX)
+ return (EINVAL);
+
+ sc = arg->sc;
+ if (sc == NULL)
+ return (EINVAL);
+
+ /* read queue length */
+ mvneta_sc_lock(sc);
+ mvneta_rx_lockq(sc, arg->queue);
+ rx = MVNETA_RX_RING(sc, arg->queue);
+ time_mvtclk = rx->queue_th_time;
+ time_us = ((uint64_t)time_mvtclk * 1000ULL * 1000ULL) / get_tclk();
+ mvneta_rx_unlockq(sc, arg->queue);
+ mvneta_sc_unlock(sc);
+
+ err = sysctl_handle_int(oidp, &time_us, 0, req);
+ if (err != 0)
+ return (err);
+
+ mvneta_sc_lock(sc);
+ mvneta_rx_lockq(sc, arg->queue);
+
+ /* update queue length (0[sec] - 1[sec]) */
+ if (time_us < 0 || time_us > (1000 * 1000)) {
+ mvneta_rx_unlockq(sc, arg->queue);
+ mvneta_sc_unlock(sc);
+ return (EINVAL);
+ }
+ time_mvtclk =
+ (uint64_t)get_tclk() * (uint64_t)time_us / (1000ULL * 1000ULL);
+ rx->queue_th_time = time_mvtclk;
+ reg = MVNETA_PRXITTH_RITT(rx->queue_th_time);
+ MVNETA_WRITE(sc, MVNETA_PRXITTH(arg->queue), reg);
+ mvneta_rx_unlockq(sc, arg->queue);
+ mvneta_sc_unlock(sc);
+
+ return (0);
+}
+
+STATIC void
+sysctl_mvneta_init(struct mvneta_softc *sc)
+{
+ struct sysctl_ctx_list *ctx;
+ struct sysctl_oid_list *children;
+ struct sysctl_oid_list *rxchildren;
+ struct sysctl_oid_list *qchildren, *mchildren;
+ struct sysctl_oid *tree;
+ int i, q;
+ struct mvneta_sysctl_queue *rxarg;
+#define MVNETA_SYSCTL_NAME(num) "queue" # num
+ static const char *sysctl_queue_names[] = {
+ MVNETA_SYSCTL_NAME(0), MVNETA_SYSCTL_NAME(1),
+ MVNETA_SYSCTL_NAME(2), MVNETA_SYSCTL_NAME(3),
+ MVNETA_SYSCTL_NAME(4), MVNETA_SYSCTL_NAME(5),
+ MVNETA_SYSCTL_NAME(6), MVNETA_SYSCTL_NAME(7),
+ };
+#undef MVNETA_SYSCTL_NAME
+
+#define MVNETA_SYSCTL_DESCR(num) "configuration parameters for queue " # num
+ static const char *sysctl_queue_descrs[] = {
+ MVNETA_SYSCTL_DESCR(0), MVNETA_SYSCTL_DESCR(1),
+ MVNETA_SYSCTL_DESCR(2), MVNETA_SYSCTL_DESCR(3),
+ MVNETA_SYSCTL_DESCR(4), MVNETA_SYSCTL_DESCR(5),
+ MVNETA_SYSCTL_DESCR(6), MVNETA_SYSCTL_DESCR(7),
+ };
+#undef MVNETA_SYSCTL_DESCR
+
+
+ ctx = device_get_sysctl_ctx(sc->dev);
+ children = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev));
+
+ tree = SYSCTL_ADD_NODE(ctx, children, OID_AUTO, "rx",
+ CTLFLAG_RD, 0, "NETA RX");
+ rxchildren = SYSCTL_CHILDREN(tree);
+ tree = SYSCTL_ADD_NODE(ctx, children, OID_AUTO, "mib",
+ CTLFLAG_RD, 0, "NETA MIB");
+ mchildren = SYSCTL_CHILDREN(tree);
+
+
+ SYSCTL_ADD_INT(ctx, children, OID_AUTO, "flow_control",
+ CTLFLAG_RW, &sc->cf_fc, 0, "flow control");
+ SYSCTL_ADD_INT(ctx, children, OID_AUTO, "lpi",
+ CTLFLAG_RW, &sc->cf_lpi, 0, "Low Power Idle");
+
+ /*
+ * MIB access
+ */
+ /* dev.mvneta.[unit].mib.<mibs> */
+ for (i = 0; i < MVNETA_PORTMIB_NOCOUNTER; i++) {
+ const char *name = mvneta_mib_list[i].sysctl_name;
+ const char *desc = mvneta_mib_list[i].desc;
+ struct mvneta_sysctl_mib *mib_arg = &sc->sysctl_mib[i];
+
+ mib_arg->sc = sc;
+ mib_arg->index = i;
+ SYSCTL_ADD_PROC(ctx, mchildren, OID_AUTO, name,
+ CTLTYPE_U64|CTLFLAG_RD, (void *)mib_arg, 0,
+ sysctl_read_mib, "I", desc);
+ }
+ SYSCTL_ADD_UQUAD(ctx, mchildren, OID_AUTO, "rx_discard",
+ CTLFLAG_RD, &sc->counter_pdfc, "Port Rx Discard Frame Counter");
+ SYSCTL_ADD_UQUAD(ctx, mchildren, OID_AUTO, "overrun",
+ CTLFLAG_RD, &sc->counter_pofc, "Port Overrun Frame Counter");
+ SYSCTL_ADD_UINT(ctx, mchildren, OID_AUTO, "watchdog",
+ CTLFLAG_RD, &sc->counter_watchdog, 0, "TX Watchdog Counter");
+
+ SYSCTL_ADD_PROC(ctx, mchildren, OID_AUTO, "reset",
+ CTLTYPE_INT|CTLFLAG_RW, (void *)sc, 0,
+ sysctl_clear_mib, "I", "Reset MIB counters");
+
+ for (q = 0; q < MVNETA_RX_QNUM_MAX; q++) {
+ rxarg = &sc->sysctl_rx_queue[q];
+
+ rxarg->sc = sc;
+ rxarg->queue = q;
+ rxarg->rxtx = MVNETA_SYSCTL_RX;
+
+ /* hw.mvneta.mvneta[unit].rx.[queue] */
+ tree = SYSCTL_ADD_NODE(ctx, rxchildren, OID_AUTO,
+ sysctl_queue_names[q], CTLFLAG_RD, 0,
+ sysctl_queue_descrs[q]);
+ qchildren = SYSCTL_CHILDREN(tree);
+
+ /* hw.mvneta.mvneta[unit].rx.[queue].threshold_timer_us */
+ SYSCTL_ADD_PROC(ctx, qchildren, OID_AUTO, "threshold_timer_us",
+ CTLTYPE_UINT | CTLFLAG_RW, rxarg, 0,
+ sysctl_set_queue_rxthtime, "I",
+ "interrupt coalescing threshold timer [us]");
+ }
+}
+
+/*
+ * MIB
+ */
+STATIC void
+mvneta_clear_mib(struct mvneta_softc *sc)
+{
+ int i;
+
+ KASSERT_SC_MTX(sc);
+
+ for (i = 0; i < nitems(mvneta_mib_list); i++) {
+ if (mvneta_mib_list[i].reg64)
+ MVNETA_READ_MIB_8(sc, mvneta_mib_list[i].regnum);
+ else
+ MVNETA_READ_MIB_4(sc, mvneta_mib_list[i].regnum);
+ sc->sysctl_mib[i].counter = 0;
+ }
+ MVNETA_READ(sc, MVNETA_PDFC);
+ sc->counter_pdfc = 0;
+ MVNETA_READ(sc, MVNETA_POFC);
+ sc->counter_pofc = 0;
+ sc->counter_watchdog = 0;
+}
+
+STATIC void
+mvneta_update_mib(struct mvneta_softc *sc)
+{
+ struct mvneta_tx_ring *tx;
+ int i;
+ uint64_t val;
+ uint32_t reg;
+
+ for (i = 0; i < nitems(mvneta_mib_list); i++) {
+
+ if (mvneta_mib_list[i].reg64)
+ val = MVNETA_READ_MIB_8(sc, mvneta_mib_list[i].regnum);
+ else
+ val = MVNETA_READ_MIB_4(sc, mvneta_mib_list[i].regnum);
+
+ if (val == 0)
+ continue;
+
+ sc->sysctl_mib[i].counter += val;
+ switch (mvneta_mib_list[i].regnum) {
+ case MVNETA_MIB_RX_GOOD_OCT:
+ if_inc_counter(sc->ifp, IFCOUNTER_IBYTES, val);
+ break;
+ case MVNETA_MIB_RX_BAD_FRAME:
+ if_inc_counter(sc->ifp, IFCOUNTER_IERRORS, val);
+ break;
+ case MVNETA_MIB_RX_GOOD_FRAME:
+ if_inc_counter(sc->ifp, IFCOUNTER_IPACKETS, val);
+ break;
+ case MVNETA_MIB_RX_MCAST_FRAME:
+ if_inc_counter(sc->ifp, IFCOUNTER_IMCASTS, val);
+ break;
+ case MVNETA_MIB_TX_GOOD_OCT:
+ if_inc_counter(sc->ifp, IFCOUNTER_OBYTES, val);
+ break;
+ case MVNETA_MIB_TX_GOOD_FRAME:
+ if_inc_counter(sc->ifp, IFCOUNTER_OPACKETS, val);
+ break;
+ case MVNETA_MIB_TX_MCAST_FRAME:
+ if_inc_counter(sc->ifp, IFCOUNTER_OMCASTS, val);
+ break;
+ case MVNETA_MIB_MAC_COL:
+ if_inc_counter(sc->ifp, IFCOUNTER_COLLISIONS, val);
+ break;
+ case MVNETA_MIB_TX_MAC_TRNS_ERR:
+ case MVNETA_MIB_TX_EXCES_COL:
+ case MVNETA_MIB_MAC_LATE_COL:
+ if_inc_counter(sc->ifp, IFCOUNTER_OERRORS, val);
+ break;
+ }
+ }
+
+ reg = MVNETA_READ(sc, MVNETA_PDFC);
+ sc->counter_pdfc += reg;
+ if_inc_counter(sc->ifp, IFCOUNTER_IQDROPS, reg);
+ reg = MVNETA_READ(sc, MVNETA_POFC);
+ sc->counter_pofc += reg;
+ if_inc_counter(sc->ifp, IFCOUNTER_IQDROPS, reg);
+
+ /* TX watchdog. */
+ if (sc->counter_watchdog_mib > 0 ) {
+ if_inc_counter(sc->ifp, IFCOUNTER_OERRORS, sc->counter_watchdog_mib);
+ sc->counter_watchdog_mib = 0;
+ }
+ /*
+ * TX driver errors:
+ * We do not take queue locks to not disrupt TX path.
+ * We may only miss one drv error which will be fixed at
+ * next mib update. We may also clear counter when TX path
+ * is incrementing it but we only do it if counter was not zero
+ * thus we may only loose one error.
+ */
+ for (i = 0; i < MVNETA_TX_QNUM_MAX; i++) {
+ tx = MVNETA_TX_RING(sc, i);
+
+ if (tx->drv_error > 0) {
+ if_inc_counter(sc->ifp, IFCOUNTER_OERRORS, tx->drv_error);
+ tx->drv_error = 0;
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-09 04:36:15 +0000