/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2012 Damjan Marion * Copyright (c) 2016 Rubicon Communications, LLC (Netgate) * 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 #include "opt_cpsw.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "syscon_if.h" #include #include #include #include #include #include #ifdef CPSW_ETHERSWITCH #include #include "etherswitch_if.h" #endif #include "if_cpswreg.h" #include "if_cpswvar.h" #include "miibus_if.h" /* Device probe/attach/detach. */ static int cpsw_probe(device_t); static int cpsw_attach(device_t); static int cpsw_detach(device_t); static int cpswp_probe(device_t); static int cpswp_attach(device_t); static int cpswp_detach(device_t); static phandle_t cpsw_get_node(device_t, device_t); /* Device Init/shutdown. */ static int cpsw_shutdown(device_t); static void cpswp_init(void *); static void cpswp_init_locked(void *); static void cpswp_stop_locked(struct cpswp_softc *); /* Device Suspend/Resume. */ static int cpsw_suspend(device_t); static int cpsw_resume(device_t); /* Ioctl. */ static int cpswp_ioctl(struct ifnet *, u_long command, caddr_t data); static int cpswp_miibus_readreg(device_t, int phy, int reg); static int cpswp_miibus_writereg(device_t, int phy, int reg, int value); static void cpswp_miibus_statchg(device_t); /* 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 cpswp_start(struct ifnet *); static void cpsw_intr_tx(void *); static void cpswp_tx_enqueue(struct cpswp_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 cpswp_tick(void *); static void cpswp_ifmedia_sts(struct ifnet *, struct ifmediareq *); static int cpswp_ifmedia_upd(struct ifnet *); static void cpsw_tx_watchdog(void *); /* ALE support */ static void cpsw_ale_read_entry(struct cpsw_softc *, uint16_t, uint32_t *); static void cpsw_ale_write_entry(struct cpsw_softc *, uint16_t, uint32_t *); static int cpsw_ale_mc_entry_set(struct cpsw_softc *, uint8_t, int, uint8_t *); static void cpsw_ale_dump_table(struct cpsw_softc *); static int cpsw_ale_update_vlan_table(struct cpsw_softc *, int, int, int, int, int); static int cpswp_ale_update_addresses(struct cpswp_softc *, int); /* Statistics and sysctls. */ static void cpsw_add_sysctls(struct cpsw_softc *); static void cpsw_stats_collect(struct cpsw_softc *); static int cpsw_stats_sysctl(SYSCTL_HANDLER_ARGS); #ifdef CPSW_ETHERSWITCH static etherswitch_info_t *cpsw_getinfo(device_t); static int cpsw_getport(device_t, etherswitch_port_t *); static int cpsw_setport(device_t, etherswitch_port_t *); static int cpsw_getconf(device_t, etherswitch_conf_t *); static int cpsw_getvgroup(device_t, etherswitch_vlangroup_t *); static int cpsw_setvgroup(device_t, etherswitch_vlangroup_t *); static int cpsw_readreg(device_t, int); static int cpsw_writereg(device_t, int, int); static int cpsw_readphy(device_t, int, int); static int cpsw_writephy(device_t, int, int, int); #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 16 /* Shared resources. */ 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), /* Bus interface */ DEVMETHOD(bus_add_child, device_add_child_ordered), /* OFW methods */ DEVMETHOD(ofw_bus_get_node, cpsw_get_node), #ifdef CPSW_ETHERSWITCH /* etherswitch interface */ DEVMETHOD(etherswitch_getinfo, cpsw_getinfo), DEVMETHOD(etherswitch_readreg, cpsw_readreg), DEVMETHOD(etherswitch_writereg, cpsw_writereg), DEVMETHOD(etherswitch_readphyreg, cpsw_readphy), DEVMETHOD(etherswitch_writephyreg, cpsw_writephy), DEVMETHOD(etherswitch_getport, cpsw_getport), DEVMETHOD(etherswitch_setport, cpsw_setport), DEVMETHOD(etherswitch_getvgroup, cpsw_getvgroup), DEVMETHOD(etherswitch_setvgroup, cpsw_setvgroup), DEVMETHOD(etherswitch_getconf, cpsw_getconf), #endif DEVMETHOD_END }; static driver_t cpsw_driver = { "cpswss", cpsw_methods, sizeof(struct cpsw_softc), }; static devclass_t cpsw_devclass; DRIVER_MODULE(cpswss, simplebus, cpsw_driver, cpsw_devclass, 0, 0); /* Port/Slave resources. */ static device_method_t cpswp_methods[] = { /* Device interface */ DEVMETHOD(device_probe, cpswp_probe), DEVMETHOD(device_attach, cpswp_attach), DEVMETHOD(device_detach, cpswp_detach), /* MII interface */ DEVMETHOD(miibus_readreg, cpswp_miibus_readreg), DEVMETHOD(miibus_writereg, cpswp_miibus_writereg), DEVMETHOD(miibus_statchg, cpswp_miibus_statchg), DEVMETHOD_END }; static driver_t cpswp_driver = { "cpsw", cpswp_methods, sizeof(struct cpswp_softc), }; static devclass_t cpswp_devclass; #ifdef CPSW_ETHERSWITCH DRIVER_MODULE(etherswitch, cpswss, etherswitch_driver, etherswitch_devclass, 0, 0); MODULE_DEPEND(cpswss, etherswitch, 1, 1, 1); #endif DRIVER_MODULE(cpsw, cpswss, cpswp_driver, cpswp_devclass, 0, 0); DRIVER_MODULE(miibus, cpsw, miibus_driver, miibus_devclass, 0, 0); MODULE_DEPEND(cpsw, ether, 1, 1, 1); MODULE_DEPEND(cpsw, miibus, 1, 1, 1); #ifdef CPSW_ETHERSWITCH static struct cpsw_vlangroups cpsw_vgroups[CPSW_VLANS]; #endif static uint32_t slave_mdio_addr[] = { 0x4a100200, 0x4a100300 }; static struct resource_spec irq_res_spec[] = { { 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 } }; static struct { void (*cb)(void *); } cpsw_intr_cb[] = { { cpsw_intr_rx_thresh }, { cpsw_intr_rx }, { cpsw_intr_tx }, { cpsw_intr_misc }, }; /* Number of entries here must match size of stats * array in struct cpswp_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"} }; /* * Basic debug support. */ 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); } 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(_sc, a) do { \ if ((_sc)->debug) { \ 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_PORT_LOCK(_sc) do { \ mtx_assert(&(_sc)->lock, MA_NOTOWNED); \ mtx_lock(&(_sc)->lock); \ } while (0) #define CPSW_PORT_UNLOCK(_sc) mtx_unlock(&(_sc)->lock) #define CPSW_PORT_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->lock, MA_OWNED) /* * Read/Write macros */ #define cpsw_read_4(_sc, _reg) bus_read_4((_sc)->mem_res, (_reg)) #define cpsw_write_4(_sc, _reg, _val) \ bus_write_4((_sc)->mem_res, (_reg), (_val)) #define cpsw_cpdma_bd_offset(i) (CPSW_CPPI_RAM_OFFSET + ((i)*16)) #define cpsw_cpdma_bd_paddr(sc, slot) \ BUS_SPACE_PHYSADDR(sc->mem_res, slot->bd_offset) #define cpsw_cpdma_read_bd(sc, slot, val) \ bus_read_region_4(sc->mem_res, slot->bd_offset, (uint32_t *) val, 4) #define cpsw_cpdma_write_bd(sc, slot, val) \ bus_write_region_4(sc->mem_res, 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_write_bd_flags(sc, slot, val) \ bus_write_2(sc->mem_res, slot->bd_offset + 14, val) #define cpsw_cpdma_read_bd_flags(sc, slot) \ bus_read_2(sc->mem_res, 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 > CPSW_TXFRAGS) ++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) 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 < nitems(sc->_slots); i++) { slot = &sc->_slots[i]; slot->bd_offset = cpsw_cpdma_bd_offset(i); STAILQ_INSERT_TAIL(&sc->avail, slot, next); } } static int cpsw_add_slots(struct cpsw_softc *sc, struct cpsw_queue *queue, int requested) { const int max_slots = nitems(sc->_slots); 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)) { device_printf(sc->dev, "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 void cpsw_free_slot(struct cpsw_softc *sc, struct cpsw_slot *slot) { int error; if (slot->dmamap) { if (slot->mbuf) bus_dmamap_unload(sc->mbuf_dtag, 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 void cpsw_reset(struct cpsw_softc *sc) { int i; callout_stop(&sc->watchdog.callout); /* 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(struct cpsw_softc *sc) { struct cpsw_slot *slot; uint32_t reg; /* Disable the interrupt pacing. */ reg = cpsw_read_4(sc, CPSW_WR_INT_CONTROL); reg &= ~(CPSW_WR_INT_PACE_EN | CPSW_WR_INT_PRESCALE_MASK); cpsw_write_4(sc, CPSW_WR_INT_CONTROL, reg); /* Clear ALE */ cpsw_write_4(sc, CPSW_ALE_CONTROL, CPSW_ALE_CTL_CLEAR_TBL); /* Enable ALE */ reg = CPSW_ALE_CTL_ENABLE; if (sc->dualemac) reg |= CPSW_ALE_CTL_VLAN_AWARE; cpsw_write_4(sc, CPSW_ALE_CONTROL, reg); /* 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: set host port to forwarding(3). */ cpsw_write_4(sc, CPSW_ALE_PORTCTL(0), ALE_PORTCTL_INGRESS | ALE_PORTCTL_FORWARD); 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); /* Turn off flow control. */ 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_PENDTHRESH(0), 0); 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_TX_EN(0), 0xFF); cpsw_write_4(sc, CPSW_WR_C_MISC_EN(0), 0x1F); /* Enable host Error Interrupt */ cpsw_write_4(sc, CPSW_CPDMA_DMA_INTMASK_SET, 3); /* Enable interrupts for RX and TX on Channel 0 */ cpsw_write_4(sc, CPSW_CPDMA_RX_INTMASK_SET, CPSW_CPDMA_RX_INT(0) | CPSW_CPDMA_RX_INT_THRESH(0)); cpsw_write_4(sc, CPSW_CPDMA_TX_INTMASK_SET, 1); /* Initialze MDIO - ENABLE, PREAMBLE=0, FAULTENB, CLKDIV=0xFF */ /* TODO Calculate MDCLK=CLK/(CLKDIV+1) */ cpsw_write_4(sc, MDIOCONTROL, MDIOCTL_ENABLE | MDIOCTL_FAULTENB | 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); cpsw_write_4(sc, CPSW_CPDMA_RX_FREEBUFFER(0), sc->rx.active_queue_len); cpsw_write_4(sc, CPSW_CPDMA_RX_PENDTHRESH(0), CPSW_TXFRAGS); /* Activate network interface. */ sc->rx.running = 1; sc->tx.running = 1; sc->watchdog.timer = 0; callout_init(&sc->watchdog.callout, 0); callout_reset(&sc->watchdog.callout, hz, cpsw_tx_watchdog, sc); } /* * * Device Probe, Attach, Detach. * */ static int cpsw_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (!ofw_bus_is_compatible(dev, "ti,cpsw")) return (ENXIO); device_set_desc(dev, "3-port Switch Ethernet Subsystem"); return (BUS_PROBE_DEFAULT); } static int cpsw_intr_attach(struct cpsw_softc *sc) { int i; for (i = 0; i < CPSW_INTR_COUNT; i++) { if (bus_setup_intr(sc->dev, sc->irq_res[i], INTR_TYPE_NET | INTR_MPSAFE, NULL, cpsw_intr_cb[i].cb, sc, &sc->ih_cookie[i]) != 0) { return (-1); } } return (0); } static void cpsw_intr_detach(struct cpsw_softc *sc) { int i; for (i = 0; i < CPSW_INTR_COUNT; i++) { if (sc->ih_cookie[i]) { bus_teardown_intr(sc->dev, sc->irq_res[i], sc->ih_cookie[i]); } } } static int cpsw_get_fdt_data(struct cpsw_softc *sc, int port) { char *name; int len, phy, vlan; pcell_t phy_id[3], vlan_id; phandle_t child; unsigned long mdio_child_addr; /* Find any slave with phy-handle/phy_id */ phy = -1; vlan = -1; for (child = OF_child(sc->node); child != 0; child = OF_peer(child)) { if (OF_getprop_alloc(child, "name", (void **)&name) < 0) continue; if (sscanf(name, "slave@%lx", &mdio_child_addr) != 1) { OF_prop_free(name); continue; } OF_prop_free(name); if (mdio_child_addr != slave_mdio_addr[port] && mdio_child_addr != (slave_mdio_addr[port] & 0xFFF)) continue; if (fdt_get_phyaddr(child, NULL, &phy, NULL) != 0){ /* Users with old DTB will have phy_id instead */ phy = -1; len = OF_getproplen(child, "phy_id"); if (len / sizeof(pcell_t) == 2) { /* Get phy address from fdt */ if (OF_getencprop(child, "phy_id", phy_id, len) > 0) phy = phy_id[1]; } } len = OF_getproplen(child, "dual_emac_res_vlan"); if (len / sizeof(pcell_t) == 1) { /* Get phy address from fdt */ if (OF_getencprop(child, "dual_emac_res_vlan", &vlan_id, len) > 0) { vlan = vlan_id; } } break; } if (phy == -1) return (ENXIO); sc->port[port].phy = phy; sc->port[port].vlan = vlan; return (0); } static int cpsw_attach(device_t dev) { int error, i; struct cpsw_softc *sc; uint32_t reg; sc = device_get_softc(dev); sc->dev = dev; sc->node = ofw_bus_get_node(dev); getbinuptime(&sc->attach_uptime); if (OF_getencprop(sc->node, "active_slave", &sc->active_slave, sizeof(sc->active_slave)) <= 0) { sc->active_slave = 0; } if (sc->active_slave > 1) sc->active_slave = 1; if (OF_hasprop(sc->node, "dual_emac")) sc->dualemac = 1; for (i = 0; i < CPSW_PORTS; i++) { if (!sc->dualemac && i != sc->active_slave) continue; if (cpsw_get_fdt_data(sc, i) != 0) { device_printf(dev, "failed to get PHY address from FDT\n"); return (ENXIO); } } /* 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 IRQ resources */ error = bus_alloc_resources(dev, irq_res_spec, sc->irq_res); if (error) { device_printf(dev, "could not allocate IRQ resources\n"); cpsw_detach(dev); return (ENXIO); } sc->mem_rid = 0; sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, RF_ACTIVE); if (sc->mem_res == NULL) { device_printf(sc->dev, "failed to allocate memory resource\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); cpsw_add_sysctls(sc); /* 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 a NULL buffer for padding. */ sc->nullpad = malloc(ETHER_MIN_LEN, M_DEVBUF, M_WAITOK | M_ZERO); 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); sc->tx.hdp_offset = CPSW_CPDMA_TX_HDP(0); sc->rx.hdp_offset = CPSW_CPDMA_RX_HDP(0); if (cpsw_intr_attach(sc) == -1) { device_printf(dev, "failed to setup interrupts\n"); cpsw_detach(dev); return (ENXIO); } #ifdef CPSW_ETHERSWITCH for (i = 0; i < CPSW_VLANS; i++) cpsw_vgroups[i].vid = -1; #endif /* Reset the controller. */ cpsw_reset(sc); cpsw_init(sc); for (i = 0; i < CPSW_PORTS; i++) { if (!sc->dualemac && i != sc->active_slave) continue; sc->port[i].dev = device_add_child(dev, "cpsw", i); if (sc->port[i].dev == NULL) { cpsw_detach(dev); return (ENXIO); } } bus_generic_probe(dev); bus_generic_attach(dev); return (0); } static int cpsw_detach(device_t dev) { struct cpsw_softc *sc; int error, i; bus_generic_detach(dev); sc = device_get_softc(dev); for (i = 0; i < CPSW_PORTS; i++) { if (sc->port[i].dev) device_delete_child(dev, sc->port[i].dev); } if (device_is_attached(dev)) { callout_stop(&sc->watchdog.callout); callout_drain(&sc->watchdog.callout); } /* Stop and release all interrupts */ cpsw_intr_detach(sc); /* Free dmamaps and mbufs */ for (i = 0; i < nitems(sc->_slots); ++i) cpsw_free_slot(sc, &sc->_slots[i]); /* Free null padding buffer. */ if (sc->nullpad) free(sc->nullpad, M_DEVBUF); /* Free DMA tag */ if (sc->mbuf_dtag) { error = bus_dma_tag_destroy(sc->mbuf_dtag); KASSERT(error == 0, ("Unable to destroy DMA tag")); } /* Free IO memory handler */ if (sc->mem_res != NULL) bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem_res); bus_release_resources(dev, irq_res_spec, sc->irq_res); /* Destroy mutexes */ mtx_destroy(&sc->rx.lock); mtx_destroy(&sc->tx.lock); /* Detach the switch device, if present. */ error = bus_generic_detach(dev); if (error != 0) return (error); return (device_delete_children(dev)); } static phandle_t cpsw_get_node(device_t bus, device_t dev) { /* Share controller node with port device. */ return (ofw_bus_get_node(bus)); } static int cpswp_probe(device_t dev) { if (device_get_unit(dev) > 1) { device_printf(dev, "Only two ports are supported.\n"); return (ENXIO); } device_set_desc(dev, "Ethernet Switch Port"); return (BUS_PROBE_DEFAULT); } static int cpswp_attach(device_t dev) { int error; struct ifnet *ifp; struct cpswp_softc *sc; uint32_t reg; uint8_t mac_addr[ETHER_ADDR_LEN]; phandle_t opp_table; struct syscon *syscon; sc = device_get_softc(dev); sc->dev = dev; sc->pdev = device_get_parent(dev); sc->swsc = device_get_softc(sc->pdev); sc->unit = device_get_unit(dev); sc->phy = sc->swsc->port[sc->unit].phy; sc->vlan = sc->swsc->port[sc->unit].vlan; if (sc->swsc->dualemac && sc->vlan == -1) sc->vlan = sc->unit + 1; if (sc->unit == 0) { sc->physel = MDIOUSERPHYSEL0; sc->phyaccess = MDIOUSERACCESS0; } else { sc->physel = MDIOUSERPHYSEL1; sc->phyaccess = MDIOUSERACCESS1; } mtx_init(&sc->lock, device_get_nameunit(dev), "cpsw port lock", MTX_DEF); /* Allocate network interface */ ifp = sc->ifp = if_alloc(IFT_ETHER); if_initname(ifp, device_get_name(sc->dev), sc->unit); 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 = cpswp_init; ifp->if_start = cpswp_start; ifp->if_ioctl = cpswp_ioctl; ifp->if_snd.ifq_drv_maxlen = sc->swsc->tx.queue_slots; IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen); IFQ_SET_READY(&ifp->if_snd); /* FIXME: For now; Go and kidnap syscon from opp-table */ /* ti,cpsw actually have an optional syscon reference but only for am33xx?? */ opp_table = OF_finddevice("/opp-table"); if (opp_table == -1) { device_printf(dev, "Cant find /opp-table\n"); cpswp_detach(dev); return (ENXIO); } if (!OF_hasprop(opp_table, "syscon")) { device_printf(dev, "/opp-table doesnt have required syscon property\n"); cpswp_detach(dev); return (ENXIO); } if (syscon_get_by_ofw_property(dev, opp_table, "syscon", &syscon) != 0) { device_printf(dev, "Failed to get syscon\n"); cpswp_detach(dev); return (ENXIO); } /* Get high part of MAC address from control module (mac_id[0|1]_hi) */ reg = SYSCON_READ_4(syscon, SCM_MAC_ID0_HI + sc->unit * 8); mac_addr[0] = reg & 0xFF; mac_addr[1] = (reg >> 8) & 0xFF; mac_addr[2] = (reg >> 16) & 0xFF; mac_addr[3] = (reg >> 24) & 0xFF; /* Get low part of MAC address from control module (mac_id[0|1]_lo) */ reg = SYSCON_READ_4(syscon, SCM_MAC_ID0_LO + sc->unit * 8); mac_addr[4] = reg & 0xFF; mac_addr[5] = (reg >> 8) & 0xFF; error = mii_attach(dev, &sc->miibus, ifp, cpswp_ifmedia_upd, cpswp_ifmedia_sts, BMSR_DEFCAPMASK, sc->phy, MII_OFFSET_ANY, 0); if (error) { device_printf(dev, "attaching PHYs failed\n"); cpswp_detach(dev); return (error); } sc->mii = device_get_softc(sc->miibus); /* Select PHY and enable interrupts */ cpsw_write_4(sc->swsc, sc->physel, MDIO_PHYSEL_LINKINTENB | (sc->phy & 0x1F)); ether_ifattach(sc->ifp, mac_addr); callout_init(&sc->mii_callout, 0); return (0); } static int cpswp_detach(device_t dev) { struct cpswp_softc *sc; sc = device_get_softc(dev); CPSW_DEBUGF(sc->swsc, ("")); if (device_is_attached(dev)) { ether_ifdetach(sc->ifp); CPSW_PORT_LOCK(sc); cpswp_stop_locked(sc); CPSW_PORT_UNLOCK(sc); callout_drain(&sc->mii_callout); } bus_generic_detach(dev); if_free(sc->ifp); mtx_destroy(&sc->lock); return (0); } /* * * Init/Shutdown. * */ static int cpsw_ports_down(struct cpsw_softc *sc) { struct cpswp_softc *psc; struct ifnet *ifp1, *ifp2; if (!sc->dualemac) return (1); psc = device_get_softc(sc->port[0].dev); ifp1 = psc->ifp; psc = device_get_softc(sc->port[1].dev); ifp2 = psc->ifp; if ((ifp1->if_flags & IFF_UP) == 0 && (ifp2->if_flags & IFF_UP) == 0) return (1); return (0); } static void cpswp_init(void *arg) { struct cpswp_softc *sc = arg; CPSW_DEBUGF(sc->swsc, ("")); CPSW_PORT_LOCK(sc); cpswp_init_locked(arg); CPSW_PORT_UNLOCK(sc); } static void cpswp_init_locked(void *arg) { #ifdef CPSW_ETHERSWITCH int i; #endif struct cpswp_softc *sc = arg; struct ifnet *ifp; uint32_t reg; CPSW_DEBUGF(sc->swsc, ("")); CPSW_PORT_LOCK_ASSERT(sc); ifp = sc->ifp; if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) return; getbinuptime(&sc->init_uptime); if (!sc->swsc->rx.running && !sc->swsc->tx.running) { /* Reset the controller. */ cpsw_reset(sc->swsc); cpsw_init(sc->swsc); } /* Set Slave Mapping. */ cpsw_write_4(sc->swsc, CPSW_SL_RX_PRI_MAP(sc->unit), 0x76543210); cpsw_write_4(sc->swsc, CPSW_PORT_P_TX_PRI_MAP(sc->unit + 1), 0x33221100); cpsw_write_4(sc->swsc, CPSW_SL_RX_MAXLEN(sc->unit), 0x5f2); /* Enable MAC RX/TX modules. */ /* TODO: Docs claim that IFCTL_B and IFCTL_A do the same thing? */ /* Huh? Docs call bit 0 "Loopback" some places, "FullDuplex" others. */ reg = cpsw_read_4(sc->swsc, CPSW_SL_MACCONTROL(sc->unit)); reg |= CPSW_SL_MACTL_GMII_ENABLE; cpsw_write_4(sc->swsc, CPSW_SL_MACCONTROL(sc->unit), reg); /* Initialize ALE: set port to forwarding, initialize addrs */ cpsw_write_4(sc->swsc, CPSW_ALE_PORTCTL(sc->unit + 1), ALE_PORTCTL_INGRESS | ALE_PORTCTL_FORWARD); cpswp_ale_update_addresses(sc, 1); if (sc->swsc->dualemac) { /* Set Port VID. */ cpsw_write_4(sc->swsc, CPSW_PORT_P_VLAN(sc->unit + 1), sc->vlan & 0xfff); cpsw_ale_update_vlan_table(sc->swsc, sc->vlan, (1 << (sc->unit + 1)) | (1 << 0), /* Member list */ (1 << (sc->unit + 1)) | (1 << 0), /* Untagged egress */ (1 << (sc->unit + 1)) | (1 << 0), 0); /* mcast reg flood */ #ifdef CPSW_ETHERSWITCH for (i = 0; i < CPSW_VLANS; i++) { if (cpsw_vgroups[i].vid != -1) continue; cpsw_vgroups[i].vid = sc->vlan; break; } #endif } mii_mediachg(sc->mii); callout_reset(&sc->mii_callout, hz, cpswp_tick, sc); ifp->if_drv_flags |= IFF_DRV_RUNNING; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; } static int cpsw_shutdown(device_t dev) { struct cpsw_softc *sc; struct cpswp_softc *psc; int i; sc = device_get_softc(dev); CPSW_DEBUGF(sc, ("")); for (i = 0; i < CPSW_PORTS; i++) { if (!sc->dualemac && i != sc->active_slave) continue; psc = device_get_softc(sc->port[i].dev); CPSW_PORT_LOCK(psc); cpswp_stop_locked(psc); CPSW_PORT_UNLOCK(psc); } return (0); } static void cpsw_rx_teardown(struct cpsw_softc *sc) { int i = 0; CPSW_RX_LOCK(sc); CPSW_DEBUGF(sc, ("starting RX teardown")); sc->rx.teardown = 1; cpsw_write_4(sc, CPSW_CPDMA_RX_TEARDOWN, 0); CPSW_RX_UNLOCK(sc); while (sc->rx.running) { if (++i > 10) { device_printf(sc->dev, "Unable to cleanly shutdown receiver\n"); return; } DELAY(200); } if (!sc->rx.running) CPSW_DEBUGF(sc, ("finished RX teardown (%d retries)", i)); } static void cpsw_tx_teardown(struct cpsw_softc *sc) { int i = 0; CPSW_TX_LOCK(sc); CPSW_DEBUGF(sc, ("starting TX teardown")); /* Start the TX queue teardown if queue is not empty. */ if (STAILQ_FIRST(&sc->tx.active) != NULL) cpsw_write_4(sc, CPSW_CPDMA_TX_TEARDOWN, 0); else sc->tx.teardown = 1; cpsw_tx_dequeue(sc); while (sc->tx.running && ++i < 10) { DELAY(200); cpsw_tx_dequeue(sc); } if (sc->tx.running) { device_printf(sc->dev, "Unable to cleanly shutdown transmitter\n"); } CPSW_DEBUGF(sc, ("finished TX teardown (%d retries, %d idle buffers)", i, sc->tx.active_queue_len)); CPSW_TX_UNLOCK(sc); } static void cpswp_stop_locked(struct cpswp_softc *sc) { struct ifnet *ifp; uint32_t reg; ifp = sc->ifp; CPSW_DEBUGF(sc->swsc, ("")); CPSW_PORT_LOCK_ASSERT(sc); 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->mii_callout); /* Tear down the RX/TX queues. */ if (cpsw_ports_down(sc->swsc)) { cpsw_rx_teardown(sc->swsc); cpsw_tx_teardown(sc->swsc); } /* Stop MAC RX/TX modules. */ reg = cpsw_read_4(sc->swsc, CPSW_SL_MACCONTROL(sc->unit)); reg &= ~CPSW_SL_MACTL_GMII_ENABLE; cpsw_write_4(sc->swsc, CPSW_SL_MACCONTROL(sc->unit), reg); if (cpsw_ports_down(sc->swsc)) { /* Capture stats before we reset controller. */ cpsw_stats_collect(sc->swsc); cpsw_reset(sc->swsc); cpsw_init(sc->swsc); } } /* * Suspend/Resume. */ static int cpsw_suspend(device_t dev) { struct cpsw_softc *sc; struct cpswp_softc *psc; int i; sc = device_get_softc(dev); CPSW_DEBUGF(sc, ("")); for (i = 0; i < CPSW_PORTS; i++) { if (!sc->dualemac && i != sc->active_slave) continue; psc = device_get_softc(sc->port[i].dev); CPSW_PORT_LOCK(psc); cpswp_stop_locked(psc); CPSW_PORT_UNLOCK(psc); } return (0); } static int cpsw_resume(device_t dev) { struct cpsw_softc *sc; sc = device_get_softc(dev); CPSW_DEBUGF(sc, ("UNIMPLEMENTED")); return (0); } /* * * IOCTL * */ static void cpsw_set_promisc(struct cpswp_softc *sc, int set) { uint32_t reg; /* * Enabling promiscuous mode requires ALE_BYPASS to be enabled. * That disables the ALE forwarding logic and causes every * packet to be sent only to the host port. In bypass mode, * the ALE processes host port transmit packets the same as in * normal mode. */ reg = cpsw_read_4(sc->swsc, CPSW_ALE_CONTROL); reg &= ~CPSW_ALE_CTL_BYPASS; if (set) reg |= CPSW_ALE_CTL_BYPASS; cpsw_write_4(sc->swsc, CPSW_ALE_CONTROL, reg); } static void cpsw_set_allmulti(struct cpswp_softc *sc, int set) { if (set) { printf("All-multicast mode unimplemented\n"); } } static int cpswp_ioctl(struct ifnet *ifp, u_long command, caddr_t data) { struct cpswp_softc *sc; struct ifreq *ifr; int error; uint32_t changed; error = 0; sc = ifp->if_softc; ifr = (struct ifreq *)data; switch (command) { case SIOCSIFCAP: changed = ifp->if_capenable ^ ifr->ifr_reqcap; if (changed & IFCAP_HWCSUM) { if ((ifr->ifr_reqcap & changed) & IFCAP_HWCSUM) ifp->if_capenable |= IFCAP_HWCSUM; else ifp->if_capenable &= ~IFCAP_HWCSUM; } error = 0; break; case SIOCSIFFLAGS: CPSW_PORT_LOCK(sc); if (ifp->if_flags & IFF_UP) { if (ifp->if_drv_flags & IFF_DRV_RUNNING) { changed = ifp->if_flags ^ sc->if_flags; CPSW_DEBUGF(sc->swsc, ("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(sc->swsc, ("SIOCSIFFLAGS: starting up")); cpswp_init_locked(sc); } } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) { CPSW_DEBUGF(sc->swsc, ("SIOCSIFFLAGS: shutting down")); cpswp_stop_locked(sc); } sc->if_flags = ifp->if_flags; CPSW_PORT_UNLOCK(sc); break; case SIOCADDMULTI: cpswp_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. */ cpswp_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 cpswp_miibus_ready(struct cpsw_softc *sc, uint32_t reg) { uint32_t r, retries = CPSW_MIIBUS_RETRIES; while (--retries) { r = cpsw_read_4(sc, reg); if ((r & MDIO_PHYACCESS_GO) == 0) return (1); DELAY(CPSW_MIIBUS_DELAY); } return (0); } static int cpswp_miibus_readreg(device_t dev, int phy, int reg) { struct cpswp_softc *sc; uint32_t cmd, r; sc = device_get_softc(dev); if (!cpswp_miibus_ready(sc->swsc, sc->phyaccess)) { device_printf(dev, "MDIO not ready to read\n"); return (0); } /* Set GO, reg, phy */ cmd = MDIO_PHYACCESS_GO | (reg & 0x1F) << 21 | (phy & 0x1F) << 16; cpsw_write_4(sc->swsc, sc->phyaccess, cmd); if (!cpswp_miibus_ready(sc->swsc, sc->phyaccess)) { device_printf(dev, "MDIO timed out during read\n"); return (0); } r = cpsw_read_4(sc->swsc, sc->phyaccess); if ((r & MDIO_PHYACCESS_ACK) == 0) { device_printf(dev, "Failed to read from PHY.\n"); r = 0; } return (r & 0xFFFF); } static int cpswp_miibus_writereg(device_t dev, int phy, int reg, int value) { struct cpswp_softc *sc; uint32_t cmd; sc = device_get_softc(dev); if (!cpswp_miibus_ready(sc->swsc, sc->phyaccess)) { device_printf(dev, "MDIO not ready to write\n"); return (0); } /* Set GO, WRITE, reg, phy, and value */ cmd = MDIO_PHYACCESS_GO | MDIO_PHYACCESS_WRITE | (reg & 0x1F) << 21 | (phy & 0x1F) << 16 | (value & 0xFFFF); cpsw_write_4(sc->swsc, sc->phyaccess, cmd); if (!cpswp_miibus_ready(sc->swsc, sc->phyaccess)) { device_printf(dev, "MDIO timed out during write\n"); return (0); } return (0); } static void cpswp_miibus_statchg(device_t dev) { struct cpswp_softc *sc; uint32_t mac_control, reg; sc = device_get_softc(dev); CPSW_DEBUGF(sc->swsc, ("")); reg = CPSW_SL_MACCONTROL(sc->unit); mac_control = cpsw_read_4(sc->swsc, reg); mac_control &= ~(CPSW_SL_MACTL_GIG | CPSW_SL_MACTL_IFCTL_A | CPSW_SL_MACTL_IFCTL_B | CPSW_SL_MACTL_FULLDUPLEX); switch(IFM_SUBTYPE(sc->mii->mii_media_active)) { case IFM_1000_SX: case IFM_1000_LX: case IFM_1000_CX: case IFM_1000_T: mac_control |= CPSW_SL_MACTL_GIG; break; case IFM_100_TX: mac_control |= CPSW_SL_MACTL_IFCTL_A; break; } if (sc->mii->mii_media_active & IFM_FDX) mac_control |= CPSW_SL_MACTL_FULLDUPLEX; cpsw_write_4(sc->swsc, reg, mac_control); } /* * * Transmit/Receive Packets. * */ static void cpsw_intr_rx(void *arg) { struct cpsw_softc *sc; struct ifnet *ifp; struct mbuf *received, *next; sc = (struct cpsw_softc *)arg; CPSW_RX_LOCK(sc); if (sc->rx.teardown) { sc->rx.running = 0; sc->rx.teardown = 0; cpsw_write_cp(sc, &sc->rx, 0xfffffffc); } 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; ifp = received->m_pkthdr.rcvif; (*ifp->if_input)(ifp, received); if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); received = next; } } static struct mbuf * cpsw_rx_dequeue(struct cpsw_softc *sc) { int nsegs, port, removed; struct cpsw_cpdma_bd bd; struct cpsw_slot *last, *slot; struct cpswp_softc *psc; struct mbuf *m, *m0, *mb_head, *mb_tail; uint16_t m0_flags; nsegs = 0; m0 = NULL; last = NULL; mb_head = NULL; mb_tail = NULL; removed = 0; /* Pull completed packets off hardware RX queue. */ while ((slot = STAILQ_FIRST(&sc->rx.active)) != NULL) { cpsw_cpdma_read_bd(sc, slot, &bd); /* * Stop on packets still in use by hardware, but do not stop * on packets with the teardown complete flag, they will be * discarded later. */ if ((bd.flags & (CPDMA_BD_OWNER | CPDMA_BD_TDOWNCMPLT)) == CPDMA_BD_OWNER) break; last = slot; ++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); m = slot->mbuf; slot->mbuf = NULL; if (bd.flags & CPDMA_BD_TDOWNCMPLT) { CPSW_DEBUGF(sc, ("RX teardown is complete")); m_freem(m); sc->rx.running = 0; sc->rx.teardown = 0; break; } port = (bd.flags & CPDMA_BD_PORT_MASK) - 1; KASSERT(port >= 0 && port <= 1, ("patcket received with invalid port: %d", port)); psc = device_get_softc(sc->port[port].dev); /* Set up mbuf */ m->m_data += bd.bufoff; m->m_len = bd.buflen; if (bd.flags & CPDMA_BD_SOP) { m->m_pkthdr.len = bd.pktlen; m->m_pkthdr.rcvif = psc->ifp; m->m_flags |= M_PKTHDR; m0_flags = bd.flags; m0 = m; } nsegs++; m->m_next = NULL; m->m_nextpkt = NULL; if (bd.flags & CPDMA_BD_EOP && m0 != NULL) { if (m0_flags & CPDMA_BD_PASS_CRC) m_adj(m0, -ETHER_CRC_LEN); m0_flags = 0; m0 = NULL; if (nsegs > sc->rx.longest_chain) sc->rx.longest_chain = nsegs; nsegs = 0; } if ((psc->ifp->if_capenable & IFCAP_RXCSUM) != 0) { /* check for valid CRC by looking into pkt_err[5:4] */ if ((bd.flags & (CPDMA_BD_SOP | CPDMA_BD_PKT_ERR_MASK)) == CPDMA_BD_SOP) { m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; m->m_pkthdr.csum_flags |= CSUM_IP_VALID; m->m_pkthdr.csum_data = 0xffff; } } if (STAILQ_FIRST(&sc->rx.active) != NULL && (bd.flags & (CPDMA_BD_EOP | CPDMA_BD_EOQ)) == (CPDMA_BD_EOP | CPDMA_BD_EOQ)) { cpsw_write_hdp_slot(sc, &sc->rx, STAILQ_FIRST(&sc->rx.active)); sc->rx.queue_restart++; } /* Add mbuf to packet list to be returned. */ if (mb_tail != NULL && (bd.flags & CPDMA_BD_SOP)) { mb_tail->m_nextpkt = m; } else if (mb_tail != NULL) { mb_tail->m_next = m; } else if (mb_tail == NULL && (bd.flags & CPDMA_BD_SOP) == 0) { if (bootverbose) printf( "%s: %s: discanding fragment packet w/o header\n", __func__, psc->ifp->if_xname); m_freem(m); continue; } else { mb_head = m; } mb_tail = m; } if (removed != 0) { cpsw_write_cp_slot(sc, &sc->rx, last); sc->rx.queue_removes += removed; sc->rx.avail_queue_len += removed; sc->rx.active_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; CPSW_DEBUGF(sc, ("Removed %d received packet(s) from RX queue", removed)); } return (mb_head); } static void cpsw_rx_enqueue(struct cpsw_softc *sc) { bus_dma_segment_t seg[1]; struct cpsw_cpdma_bd bd; struct cpsw_slot *first_new_slot, *last_old_slot, *next, *slot; int error, nsegs, added = 0; /* Register new mbufs with hardware. */ first_new_slot = NULL; last_old_slot = STAILQ_LAST(&sc->rx.active, cpsw_slot, next); while ((slot = STAILQ_FIRST(&sc->rx.avail)) != NULL) { if (first_new_slot == NULL) first_new_slot = slot; if (slot->mbuf == NULL) { slot->mbuf = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); if (slot->mbuf == NULL) { device_printf(sc->dev, "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) { device_printf(sc->dev, "%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. */ if ((next = STAILQ_NEXT(slot, next)) != NULL) bd.next = cpsw_cpdma_bd_paddr(sc, next); else 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; STAILQ_REMOVE_HEAD(&sc->rx.avail, next); STAILQ_INSERT_TAIL(&sc->rx.active, slot, next); } if (added == 0 || first_new_slot == NULL) return; CPSW_DEBUGF(sc, ("Adding %d buffers to RX queue", added)); /* Link new entries to hardware RX queue. */ 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); } sc->rx.queue_adds += added; sc->rx.avail_queue_len -= added; sc->rx.active_queue_len += added; cpsw_write_4(sc, CPSW_CPDMA_RX_FREEBUFFER(0), 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 cpswp_start(struct ifnet *ifp) { struct cpswp_softc *sc; sc = ifp->if_softc; if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->swsc->tx.running == 0) { return; } CPSW_TX_LOCK(sc->swsc); cpswp_tx_enqueue(sc); cpsw_tx_dequeue(sc->swsc); CPSW_TX_UNLOCK(sc->swsc); } static void cpsw_intr_tx(void *arg) { struct cpsw_softc *sc; sc = (struct cpsw_softc *)arg; CPSW_TX_LOCK(sc); if (cpsw_read_4(sc, CPSW_CPDMA_TX_CP(0)) == 0xfffffffc) cpsw_write_cp(sc, &sc->tx, 0xfffffffc); cpsw_tx_dequeue(sc); cpsw_write_4(sc, CPSW_CPDMA_CPDMA_EOI_VECTOR, 2); CPSW_TX_UNLOCK(sc); } static void cpswp_tx_enqueue(struct cpswp_softc *sc) { bus_dma_segment_t segs[CPSW_TXFRAGS]; struct cpsw_cpdma_bd bd; struct cpsw_slot *first_new_slot, *last, *last_old_slot, *next, *slot; struct mbuf *m0; int error, nsegs, seg, added = 0, padlen; /* Pull pending packets from IF queue and prep them for DMA. */ last = NULL; first_new_slot = NULL; last_old_slot = STAILQ_LAST(&sc->swsc->tx.active, cpsw_slot, next); while ((slot = STAILQ_FIRST(&sc->swsc->tx.avail)) != NULL) { IF_DEQUEUE(&sc->ifp->if_snd, m0); if (m0 == NULL) break; slot->mbuf = m0; padlen = ETHER_MIN_LEN - ETHER_CRC_LEN - m0->m_pkthdr.len; if (padlen < 0) padlen = 0; else if (padlen > 0) m_append(slot->mbuf, padlen, sc->swsc->nullpad); /* Create mapping in DMA memory */ error = bus_dmamap_load_mbuf_sg(sc->swsc->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 > sc->swsc->tx.avail_queue_len)) { bus_dmamap_unload(sc->swsc->mbuf_dtag, slot->dmamap); m0 = m_defrag(slot->mbuf, M_NOWAIT); if (m0 == NULL) { device_printf(sc->dev, "Can't defragment packet; dropping\n"); m_freem(slot->mbuf); } else { CPSW_DEBUGF(sc->swsc, ("Requeueing defragmented packet")); IF_PREPEND(&sc->ifp->if_snd, m0); } slot->mbuf = NULL; continue; } if (error != 0) { device_printf(sc->dev, "%s: Can't setup DMA (error=%d), dropping packet\n", __func__, error); bus_dmamap_unload(sc->swsc->mbuf_dtag, slot->dmamap); m_freem(slot->mbuf); slot->mbuf = NULL; break; } bus_dmamap_sync(sc->swsc->mbuf_dtag, slot->dmamap, BUS_DMASYNC_PREWRITE); CPSW_DEBUGF(sc->swsc, ("Queueing TX packet: %d segments + %d pad bytes", nsegs, padlen)); if (first_new_slot == NULL) first_new_slot = slot; /* Link from the previous descriptor. */ if (last != NULL) cpsw_cpdma_write_bd_next(sc->swsc, last, slot); slot->ifp = sc->ifp; /* If there is only one segment, the for() loop * gets skipped and the single buffer gets set up * as both SOP and EOP. */ if (nsegs > 1) { next = STAILQ_NEXT(slot, next); bd.next = cpsw_cpdma_bd_paddr(sc->swsc, next); } else bd.next = 0; /* Start by setting up the first buffer. */ bd.bufptr = segs[0].ds_addr; bd.bufoff = 0; bd.buflen = segs[0].ds_len; bd.pktlen = m_length(slot->mbuf, NULL); bd.flags = CPDMA_BD_SOP | CPDMA_BD_OWNER; if (sc->swsc->dualemac) { bd.flags |= CPDMA_BD_TO_PORT; bd.flags |= ((sc->unit + 1) & CPDMA_BD_PORT_MASK); } for (seg = 1; seg < nsegs; ++seg) { /* Save the previous buffer (which isn't EOP) */ cpsw_cpdma_write_bd(sc->swsc, slot, &bd); STAILQ_REMOVE_HEAD(&sc->swsc->tx.avail, next); STAILQ_INSERT_TAIL(&sc->swsc->tx.active, slot, next); slot = STAILQ_FIRST(&sc->swsc->tx.avail); /* Setup next buffer (which isn't SOP) */ if (nsegs > seg + 1) { next = STAILQ_NEXT(slot, next); bd.next = cpsw_cpdma_bd_paddr(sc->swsc, next); } else 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. */ bd.flags |= CPDMA_BD_EOP; cpsw_cpdma_write_bd(sc->swsc, slot, &bd); STAILQ_REMOVE_HEAD(&sc->swsc->tx.avail, next); STAILQ_INSERT_TAIL(&sc->swsc->tx.active, slot, next); last = slot; added += nsegs; if (nsegs > sc->swsc->tx.longest_chain) sc->swsc->tx.longest_chain = nsegs; BPF_MTAP(sc->ifp, m0); } if (first_new_slot == NULL) return; /* Attach the list of new buffers to the hardware TX queue. */ if (last_old_slot != NULL && (cpsw_cpdma_read_bd_flags(sc->swsc, last_old_slot) & CPDMA_BD_EOQ) == 0) { /* Add buffers to end of current queue. */ cpsw_cpdma_write_bd_next(sc->swsc, last_old_slot, first_new_slot); } else { /* Start a fresh queue. */ cpsw_write_hdp_slot(sc->swsc, &sc->swsc->tx, first_new_slot); } sc->swsc->tx.queue_adds += added; sc->swsc->tx.avail_queue_len -= added; sc->swsc->tx.active_queue_len += added; if (sc->swsc->tx.active_queue_len > sc->swsc->tx.max_active_queue_len) { sc->swsc->tx.max_active_queue_len = sc->swsc->tx.active_queue_len; } CPSW_DEBUGF(sc->swsc, ("Queued %d TX packet(s)", added)); } static int cpsw_tx_dequeue(struct cpsw_softc *sc) { struct cpsw_slot *slot, *last_removed_slot = NULL; struct cpsw_cpdma_bd bd; uint32_t flags, removed = 0; /* Pull completed buffers off the hardware TX queue. */ slot = STAILQ_FIRST(&sc->tx.active); while (slot != NULL) { flags = cpsw_cpdma_read_bd_flags(sc, slot); /* TearDown complete is only marked on the SOP for the packet. */ if ((flags & (CPDMA_BD_SOP | CPDMA_BD_TDOWNCMPLT)) == (CPDMA_BD_SOP | CPDMA_BD_TDOWNCMPLT)) { sc->tx.teardown = 1; } if ((flags & (CPDMA_BD_SOP | CPDMA_BD_OWNER)) == (CPDMA_BD_SOP | CPDMA_BD_OWNER) && sc->tx.teardown == 0) break; /* Hardware is still using this 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; if (slot->ifp) { if (sc->tx.teardown == 0) if_inc_counter(slot->ifp, IFCOUNTER_OPACKETS, 1); else if_inc_counter(slot->ifp, IFCOUNTER_OQDROPS, 1); } /* 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); } cpsw_write_cp_slot(sc, &sc->tx, last_removed_slot); /* Restart the TX queue if necessary. */ cpsw_cpdma_read_bd(sc, last_removed_slot, &bd); if (slot != NULL && bd.next != 0 && (bd.flags & (CPDMA_BD_EOP | CPDMA_BD_OWNER | CPDMA_BD_EOQ)) == (CPDMA_BD_EOP | CPDMA_BD_EOQ)) { cpsw_write_hdp_slot(sc, &sc->tx, slot); sc->tx.queue_restart++; break; } } if (removed != 0) { 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; CPSW_DEBUGF(sc, ("TX removed %d completed packet(s)", removed)); } if (sc->tx.teardown && STAILQ_EMPTY(&sc->tx.active)) { CPSW_DEBUGF(sc, ("TX teardown is complete")); sc->tx.teardown = 0; sc->tx.running = 0; } return (removed); } /* * * Miscellaneous interrupts. * */ static void cpsw_intr_rx_thresh(void *arg) { struct cpsw_softc *sc; struct ifnet *ifp; struct mbuf *received, *next; sc = (struct cpsw_softc *)arg; CPSW_RX_LOCK(sc); received = cpsw_rx_dequeue(sc); cpsw_rx_enqueue(sc); cpsw_write_4(sc, CPSW_CPDMA_CPDMA_EOI_VECTOR, 0); CPSW_RX_UNLOCK(sc); while (received != NULL) { next = received->m_nextpkt; received->m_nextpkt = NULL; ifp = received->m_pkthdr.rcvif; (*ifp->if_input)(ifp, received); if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); received = next; } } 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 & CPSW_WR_C_MISC_EVNT_PEND) CPSW_DEBUGF(sc, ("Time sync event interrupt unimplemented")); if (stat & CPSW_WR_C_MISC_STAT_PEND) cpsw_stats_collect(sc); if (stat & CPSW_WR_C_MISC_HOST_PEND) cpsw_intr_misc_host_error(sc); if (stat & CPSW_WR_C_MISC_MDIOLINK) { cpsw_write_4(sc, MDIOLINKINTMASKED, cpsw_read_4(sc, MDIOLINKINTMASKED)); } if (stat & CPSW_WR_C_MISC_MDIOUSER) { CPSW_DEBUGF(sc, ("MDIO operation completed interrupt unimplemented")); } cpsw_write_4(sc, CPSW_CPDMA_CPDMA_EOI_VECTOR, 3); } /* * * Periodic Checks and Watchdog. * */ static void cpswp_tick(void *msc) { struct cpswp_softc *sc = msc; /* Check for media type change */ mii_tick(sc->mii); if (sc->media_status != sc->mii->mii_media.ifm_media) { printf("%s: media type changed (ifm_media=%x)\n", __func__, sc->mii->mii_media.ifm_media); cpswp_ifmedia_upd(sc->ifp); } /* Schedule another timeout one second from now */ callout_reset(&sc->mii_callout, hz, cpswp_tick, sc); } static void cpswp_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct cpswp_softc *sc; struct mii_data *mii; sc = ifp->if_softc; CPSW_DEBUGF(sc->swsc, ("")); CPSW_PORT_LOCK(sc); mii = sc->mii; mii_pollstat(mii); ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; CPSW_PORT_UNLOCK(sc); } static int cpswp_ifmedia_upd(struct ifnet *ifp) { struct cpswp_softc *sc; sc = ifp->if_softc; CPSW_DEBUGF(sc->swsc, ("")); CPSW_PORT_LOCK(sc); mii_mediachg(sc->mii); sc->media_status = sc->mii->mii_media.ifm_media; CPSW_PORT_UNLOCK(sc); return (0); } static void cpsw_tx_watchdog_full_reset(struct cpsw_softc *sc) { struct cpswp_softc *psc; int i; cpsw_debugf_head("CPSW watchdog"); device_printf(sc->dev, "watchdog timeout\n"); printf("CPSW_CPDMA_TX%d_HDP=0x%x\n", 0, cpsw_read_4(sc, CPSW_CPDMA_TX_HDP(0))); printf("CPSW_CPDMA_TX%d_CP=0x%x\n", 0, cpsw_read_4(sc, CPSW_CPDMA_TX_CP(0))); cpsw_dump_queue(sc, &sc->tx.active); for (i = 0; i < CPSW_PORTS; i++) { if (!sc->dualemac && i != sc->active_slave) continue; psc = device_get_softc(sc->port[i].dev); CPSW_PORT_LOCK(psc); cpswp_stop_locked(psc); CPSW_PORT_UNLOCK(psc); } } static void cpsw_tx_watchdog(void *msc) { struct cpsw_softc *sc; sc = msc; CPSW_TX_LOCK(sc); if (sc->tx.active_queue_len == 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 > 5) { sc->watchdog.timer = 0; ++sc->watchdog.resets; cpsw_tx_watchdog_full_reset(sc); } } sc->tx.queue_removes_at_last_tick = sc->tx.queue_removes; CPSW_TX_UNLOCK(sc); /* Schedule another timeout one second from now */ callout_reset(&sc->watchdog.callout, hz, cpsw_tx_watchdog, 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 void cpsw_ale_remove_all_mc_entries(struct cpsw_softc *sc) { int i; uint32_t ale_entry[3]; /* First four entries are link address and broadcast. */ for (i = 10; i < CPSW_MAX_ALE_ENTRIES; i++) { cpsw_ale_read_entry(sc, i, ale_entry); if ((ALE_TYPE(ale_entry) == ALE_TYPE_ADDR || ALE_TYPE(ale_entry) == ALE_TYPE_VLAN_ADDR) && ALE_MCAST(ale_entry) == 1) { /* MCast link addr */ ale_entry[0] = ale_entry[1] = ale_entry[2] = 0; cpsw_ale_write_entry(sc, i, ale_entry); } } } static int cpsw_ale_mc_entry_set(struct cpsw_softc *sc, uint8_t portmap, int vlan, uint8_t *mac) { int free_index = -1, matching_index = -1, i; uint32_t ale_entry[3], ale_type; /* Find a matching entry or a free entry. */ for (i = 10; 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_TYPE(ale_entry) == 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; } if (vlan != -1) ale_type = ALE_TYPE_VLAN_ADDR << 28 | vlan << 16; else ale_type = ALE_TYPE_ADDR << 28; /* 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] and Mcast fwd state[63:62] is fw(3). */ ale_entry[1] |= ALE_MCAST_FWD | ale_type; /* 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); switch (ALE_TYPE(ale_entry)) { case ALE_TYPE_VLAN: printf("ALE[%4u] %08x %08x %08x ", i, ale_entry[2], ale_entry[1], ale_entry[0]); printf("type: %u ", ALE_TYPE(ale_entry)); printf("vlan: %u ", ALE_VLAN(ale_entry)); printf("untag: %u ", ALE_VLAN_UNTAG(ale_entry)); printf("reg flood: %u ", ALE_VLAN_REGFLOOD(ale_entry)); printf("unreg flood: %u ", ALE_VLAN_UNREGFLOOD(ale_entry)); printf("members: %u ", ALE_VLAN_MEMBERS(ale_entry)); printf("\n"); break; case ALE_TYPE_ADDR: case ALE_TYPE_VLAN_ADDR: printf("ALE[%4u] %08x %08x %08x ", i, ale_entry[2], ale_entry[1], ale_entry[0]); printf("type: %u ", ALE_TYPE(ale_entry)); 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_MCAST(ale_entry) ? "mcast " : "ucast "); if (ALE_TYPE(ale_entry) == ALE_TYPE_VLAN_ADDR) printf("vlan: %u ", ALE_VLAN(ale_entry)); printf("port: %u ", ALE_PORTS(ale_entry)); printf("\n"); break; } } printf("\n"); } static u_int cpswp_set_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt) { struct cpswp_softc *sc = arg; uint32_t portmask; if (sc->swsc->dualemac) portmask = 1 << (sc->unit + 1) | 1 << 0; else portmask = 7; cpsw_ale_mc_entry_set(sc->swsc, portmask, sc->vlan, LLADDR(sdl)); return (1); } static int cpswp_ale_update_addresses(struct cpswp_softc *sc, int purge) { uint8_t *mac; uint32_t ale_entry[3], ale_type, portmask; if (sc->swsc->dualemac) { ale_type = ALE_TYPE_VLAN_ADDR << 28 | sc->vlan << 16; portmask = 1 << (sc->unit + 1) | 1 << 0; } else { ale_type = ALE_TYPE_ADDR << 28; portmask = 7; } /* * Route incoming packets for our MAC address to Port 0 (host). * For simplicity, keep this entry at table index 0 for port 1 and * at index 2 for port 2 in the ALE. */ mac = LLADDR((struct sockaddr_dl *)sc->ifp->if_addr->ifa_addr); ale_entry[0] = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5]; ale_entry[1] = ale_type | mac[0] << 8 | mac[1]; /* addr entry + mac */ ale_entry[2] = 0; /* port = 0 */ cpsw_ale_write_entry(sc->swsc, 0 + 2 * sc->unit, ale_entry); /* Set outgoing MAC Address for slave port. */ cpsw_write_4(sc->swsc, CPSW_PORT_P_SA_HI(sc->unit + 1), mac[3] << 24 | mac[2] << 16 | mac[1] << 8 | mac[0]); cpsw_write_4(sc->swsc, CPSW_PORT_P_SA_LO(sc->unit + 1), mac[5] << 8 | mac[4]); /* Keep the broadcast address at table entry 1 (or 3). */ ale_entry[0] = 0xffffffff; /* Lower 32 bits of MAC */ /* ALE_MCAST_FWD, Addr type, upper 16 bits of Mac */ ale_entry[1] = ALE_MCAST_FWD | ale_type | 0xffff; ale_entry[2] = portmask << 2; cpsw_ale_write_entry(sc->swsc, 1 + 2 * sc->unit, 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->swsc); /* Set other multicast addrs desired. */ if_foreach_llmaddr(sc->ifp, cpswp_set_maddr, sc); return (0); } static int cpsw_ale_update_vlan_table(struct cpsw_softc *sc, int vlan, int ports, int untag, int mcregflood, int mcunregflood) { int free_index, i, matching_index; uint32_t ale_entry[3]; free_index = matching_index = -1; /* Find a matching entry or a free entry. */ for (i = 5; 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_TYPE(ale_entry) == 0) free_index = i; if (ALE_VLAN(ale_entry) == vlan) { matching_index = i; break; } } if (matching_index < 0) { if (free_index < 0) return (-1); i = free_index; } ale_entry[0] = (untag & 7) << 24 | (mcregflood & 7) << 16 | (mcunregflood & 7) << 8 | (ports & 7); ale_entry[1] = ALE_TYPE_VLAN << 28 | vlan << 16; ale_entry[2] = 0; cpsw_ale_write_entry(sc, i, ale_entry); 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(sc, ("%s: %ju + %u = %ju", cpsw_stat_sysctls[i].oid, (intmax_t)sc->shadow_stats[i], r, (intmax_t)sc->shadow_stats[i] + r)); } } #endif static void cpsw_stats_collect(struct cpsw_softc *sc) { int i; uint32_t r; CPSW_DEBUGF(sc, ("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_intr_coalesce(SYSCTL_HANDLER_ARGS) { int error; struct cpsw_softc *sc; uint32_t ctrl, intr_per_ms; sc = (struct cpsw_softc *)arg1; error = sysctl_handle_int(oidp, &sc->coal_us, 0, req); if (error != 0 || req->newptr == NULL) return (error); ctrl = cpsw_read_4(sc, CPSW_WR_INT_CONTROL); ctrl &= ~(CPSW_WR_INT_PACE_EN | CPSW_WR_INT_PRESCALE_MASK); if (sc->coal_us == 0) { /* Disable the interrupt pace hardware. */ cpsw_write_4(sc, CPSW_WR_INT_CONTROL, ctrl); cpsw_write_4(sc, CPSW_WR_C_RX_IMAX(0), 0); cpsw_write_4(sc, CPSW_WR_C_TX_IMAX(0), 0); return (0); } if (sc->coal_us > CPSW_WR_C_IMAX_US_MAX) sc->coal_us = CPSW_WR_C_IMAX_US_MAX; if (sc->coal_us < CPSW_WR_C_IMAX_US_MIN) sc->coal_us = CPSW_WR_C_IMAX_US_MIN; intr_per_ms = 1000 / sc->coal_us; /* Just to make sure... */ if (intr_per_ms > CPSW_WR_C_IMAX_MAX) intr_per_ms = CPSW_WR_C_IMAX_MAX; if (intr_per_ms < CPSW_WR_C_IMAX_MIN) intr_per_ms = CPSW_WR_C_IMAX_MIN; /* Set the prescale to produce 4us pulses from the 125 Mhz clock. */ ctrl |= (125 * 4) & CPSW_WR_INT_PRESCALE_MASK; /* Enable the interrupt pace hardware. */ cpsw_write_4(sc, CPSW_WR_C_RX_IMAX(0), intr_per_ms); cpsw_write_4(sc, CPSW_WR_C_TX_IMAX(0), intr_per_ms); ctrl |= CPSW_WR_INT_C0_RX_PULSE | CPSW_WR_INT_C0_TX_PULSE; cpsw_write_4(sc, CPSW_WR_INT_CONTROL, ctrl); return (0); } static int cpsw_stat_uptime(SYSCTL_HANDLER_ARGS) { struct cpsw_softc *swsc; struct cpswp_softc *sc; struct bintime t; unsigned result; swsc = arg1; sc = device_get_softc(swsc->port[arg2].dev); 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, "queueRestart", CTLFLAG_RD, &queue->queue_restart, 0, "Total times the queue has been restarted"); 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; struct sysctl_oid_list *ports_parent, *port_parent; char port[16]; int i; ctx = device_get_sysctl_ctx(sc->dev); parent = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)); SYSCTL_ADD_INT(ctx, parent, OID_AUTO, "debug", CTLFLAG_RW, &sc->debug, 0, "Enable switch debug messages"); SYSCTL_ADD_PROC(ctx, parent, OID_AUTO, "attachedSecs", CTLTYPE_UINT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0, cpsw_stat_attached, "IU", "Time since driver attach"); SYSCTL_ADD_PROC(ctx, parent, OID_AUTO, "intr_coalesce_us", CTLTYPE_UINT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0, cpsw_intr_coalesce, "IU", "minimum time between interrupts"); node = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "ports", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "CPSW Ports Statistics"); ports_parent = SYSCTL_CHILDREN(node); for (i = 0; i < CPSW_PORTS; i++) { if (!sc->dualemac && i != sc->active_slave) continue; port[0] = '0' + i; port[1] = '\0'; node = SYSCTL_ADD_NODE(ctx, ports_parent, OID_AUTO, port, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "CPSW Port Statistics"); port_parent = SYSCTL_CHILDREN(node); SYSCTL_ADD_PROC(ctx, port_parent, OID_AUTO, "uptime", CTLTYPE_UINT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, i, cpsw_stat_uptime, "IU", "Seconds since driver init"); } stats_node = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "stats", CTLFLAG_RD | CTLFLAG_MPSAFE, 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 | CTLFLAG_NEEDGIANT, sc, 0, cpsw_stats_sysctl, "IU", cpsw_stat_sysctls[i].oid); } queue_node = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "queue", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "CPSW Queue Statistics"); queue_parent = SYSCTL_CHILDREN(queue_node); node = SYSCTL_ADD_NODE(ctx, queue_parent, OID_AUTO, "tx", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "TX Queue Statistics"); cpsw_add_queue_sysctls(ctx, node, &sc->tx); node = SYSCTL_ADD_NODE(ctx, queue_parent, OID_AUTO, "rx", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "RX Queue Statistics"); cpsw_add_queue_sysctls(ctx, node, &sc->rx); node = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "watchdog", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Watchdog Statistics"); cpsw_add_watchdog_sysctls(ctx, node, sc); } #ifdef CPSW_ETHERSWITCH static etherswitch_info_t etherswitch_info = { .es_nports = CPSW_PORTS + 1, .es_nvlangroups = CPSW_VLANS, .es_name = "TI Common Platform Ethernet Switch (CPSW)", .es_vlan_caps = ETHERSWITCH_VLAN_DOT1Q, }; static etherswitch_info_t * cpsw_getinfo(device_t dev) { return (ðerswitch_info); } static int cpsw_getport(device_t dev, etherswitch_port_t *p) { int err; struct cpsw_softc *sc; struct cpswp_softc *psc; struct ifmediareq *ifmr; uint32_t reg; if (p->es_port < 0 || p->es_port > CPSW_PORTS) return (ENXIO); err = 0; sc = device_get_softc(dev); if (p->es_port == CPSW_CPU_PORT) { p->es_flags |= ETHERSWITCH_PORT_CPU; ifmr = &p->es_ifmr; ifmr->ifm_current = ifmr->ifm_active = IFM_ETHER | IFM_1000_T | IFM_FDX; ifmr->ifm_mask = 0; ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID; ifmr->ifm_count = 0; } else { psc = device_get_softc(sc->port[p->es_port - 1].dev); err = ifmedia_ioctl(psc->ifp, &p->es_ifr, &psc->mii->mii_media, SIOCGIFMEDIA); } reg = cpsw_read_4(sc, CPSW_PORT_P_VLAN(p->es_port)); p->es_pvid = reg & ETHERSWITCH_VID_MASK; reg = cpsw_read_4(sc, CPSW_ALE_PORTCTL(p->es_port)); if (reg & ALE_PORTCTL_DROP_UNTAGGED) p->es_flags |= ETHERSWITCH_PORT_DROPUNTAGGED; if (reg & ALE_PORTCTL_INGRESS) p->es_flags |= ETHERSWITCH_PORT_INGRESS; return (err); } static int cpsw_setport(device_t dev, etherswitch_port_t *p) { struct cpsw_softc *sc; struct cpswp_softc *psc; struct ifmedia *ifm; uint32_t reg; if (p->es_port < 0 || p->es_port > CPSW_PORTS) return (ENXIO); sc = device_get_softc(dev); if (p->es_pvid != 0) { cpsw_write_4(sc, CPSW_PORT_P_VLAN(p->es_port), p->es_pvid & ETHERSWITCH_VID_MASK); } reg = cpsw_read_4(sc, CPSW_ALE_PORTCTL(p->es_port)); if (p->es_flags & ETHERSWITCH_PORT_DROPUNTAGGED) reg |= ALE_PORTCTL_DROP_UNTAGGED; else reg &= ~ALE_PORTCTL_DROP_UNTAGGED; if (p->es_flags & ETHERSWITCH_PORT_INGRESS) reg |= ALE_PORTCTL_INGRESS; else reg &= ~ALE_PORTCTL_INGRESS; cpsw_write_4(sc, CPSW_ALE_PORTCTL(p->es_port), reg); /* CPU port does not allow media settings. */ if (p->es_port == CPSW_CPU_PORT) return (0); psc = device_get_softc(sc->port[p->es_port - 1].dev); ifm = &psc->mii->mii_media; return (ifmedia_ioctl(psc->ifp, &p->es_ifr, ifm, SIOCSIFMEDIA)); } static int cpsw_getconf(device_t dev, etherswitch_conf_t *conf) { /* Return the VLAN mode. */ conf->cmd = ETHERSWITCH_CONF_VLAN_MODE; conf->vlan_mode = ETHERSWITCH_VLAN_DOT1Q; return (0); } static int cpsw_getvgroup(device_t dev, etherswitch_vlangroup_t *vg) { int i, vid; uint32_t ale_entry[3]; struct cpsw_softc *sc; sc = device_get_softc(dev); if (vg->es_vlangroup >= CPSW_VLANS) return (EINVAL); vg->es_vid = 0; vid = cpsw_vgroups[vg->es_vlangroup].vid; if (vid == -1) return (0); for (i = 0; i < CPSW_MAX_ALE_ENTRIES; i++) { cpsw_ale_read_entry(sc, i, ale_entry); if (ALE_TYPE(ale_entry) != ALE_TYPE_VLAN) continue; if (vid != ALE_VLAN(ale_entry)) continue; vg->es_fid = 0; vg->es_vid = ALE_VLAN(ale_entry) | ETHERSWITCH_VID_VALID; vg->es_member_ports = ALE_VLAN_MEMBERS(ale_entry); vg->es_untagged_ports = ALE_VLAN_UNTAG(ale_entry); } return (0); } static void cpsw_remove_vlan(struct cpsw_softc *sc, int vlan) { 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_TYPE(ale_entry) != ALE_TYPE_VLAN) continue; if (vlan != ALE_VLAN(ale_entry)) continue; ale_entry[0] = ale_entry[1] = ale_entry[2] = 0; cpsw_ale_write_entry(sc, i, ale_entry); break; } } static int cpsw_setvgroup(device_t dev, etherswitch_vlangroup_t *vg) { int i; struct cpsw_softc *sc; sc = device_get_softc(dev); for (i = 0; i < CPSW_VLANS; i++) { /* Is this Vlan ID in use by another vlangroup ? */ if (vg->es_vlangroup != i && cpsw_vgroups[i].vid == vg->es_vid) return (EINVAL); } if (vg->es_vid == 0) { if (cpsw_vgroups[vg->es_vlangroup].vid == -1) return (0); cpsw_remove_vlan(sc, cpsw_vgroups[vg->es_vlangroup].vid); cpsw_vgroups[vg->es_vlangroup].vid = -1; vg->es_untagged_ports = 0; vg->es_member_ports = 0; vg->es_vid = 0; return (0); } vg->es_vid &= ETHERSWITCH_VID_MASK; vg->es_member_ports &= CPSW_PORTS_MASK; vg->es_untagged_ports &= CPSW_PORTS_MASK; if (cpsw_vgroups[vg->es_vlangroup].vid != -1 && cpsw_vgroups[vg->es_vlangroup].vid != vg->es_vid) return (EINVAL); cpsw_vgroups[vg->es_vlangroup].vid = vg->es_vid; cpsw_ale_update_vlan_table(sc, vg->es_vid, vg->es_member_ports, vg->es_untagged_ports, vg->es_member_ports, 0); return (0); } static int cpsw_readreg(device_t dev, int addr) { /* Not supported. */ return (0); } static int cpsw_writereg(device_t dev, int addr, int value) { /* Not supported. */ return (0); } static int cpsw_readphy(device_t dev, int phy, int reg) { /* Not supported. */ return (0); } static int cpsw_writephy(device_t dev, int phy, int reg, int data) { /* Not supported. */ return (0); } #endif