diff options
Diffstat (limited to 'rtemsbsd/sys/arm/lpc/if_lpe.c')
| -rwxr-xr-x | rtemsbsd/sys/arm/lpc/if_lpe.c | 2855 |
1 files changed, 1598 insertions, 1257 deletions
diff --git a/rtemsbsd/sys/arm/lpc/if_lpe.c b/rtemsbsd/sys/arm/lpc/if_lpe.c index 40ac162e..87ca9ff7 100755 --- a/rtemsbsd/sys/arm/lpc/if_lpe.c +++ b/rtemsbsd/sys/arm/lpc/if_lpe.c @@ -1,1428 +1,1769 @@ -#include <machine/rtems-bsd-kernel-space.h> - -/*- - * SPDX-License-Identifier: BSD-2-Clause-FreeBSD +/** + * @file * - * Copyright (c) 2011 Jakub Wojciech Klama <jceel@FreeBSD.org> - * All rights reserved. + * @ingroup lpc_eth * - * 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. + * @brief Ethernet driver. + */ + +/* + * Copyright (C) 2009, 2022 embedded brains GmbH * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); + +#include <machine/rtems-bsd-kernel-space.h> + +#include <bsp.h> + +#if defined(LIBBSP_ARM_LPC24XX_BSP_H) || defined(LIBBSP_ARM_LPC32XX_BSP_H) #include <sys/param.h> -#include <sys/endian.h> -#include <sys/systm.h> -#include <sys/sockio.h> -#include <sys/mbuf.h> -#include <sys/malloc.h> #include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/mbuf.h> #include <sys/module.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/rman.h> -#include <sys/bus.h> #include <sys/socket.h> +#include <sys/sockio.h> + +#include <sys/bus.h> #include <machine/bus.h> -#ifndef __rtems__ -#include <machine/intr.h> -#endif /* __rtems__ */ #include <net/if.h> -#include <net/if_arp.h> #include <net/ethernet.h> +#include <net/if_arp.h> #include <net/if_dl.h> #include <net/if_media.h> #include <net/if_types.h> #include <net/if_var.h> -#include <net/bpf.h> +#include <dev/mii/mii.h> -#ifndef __rtems__ -#include <dev/ofw/ofw_bus.h> -#include <dev/ofw/ofw_bus_subr.h> -#endif /* __rtems__ */ +#include <rtems/bsd/bsd.h> -#include <dev/mii/mii.h> -#include <dev/mii/miivar.h> +#include <arm/lpc/probe.h> -#include <arm/lpc/lpcreg.h> -#include <arm/lpc/lpcvar.h> -#include <arm/lpc/if_lpereg.h> +#include <bsp.h> +#include <bsp/irq.h> +#include <bsp/lpc-ethernet-config.h> +#include <bsp/utility.h> -#include <rtems/bsd/local/miibus_if.h> -#ifdef __rtems__ -#include <machine/rtems-bsd-cache.h> -#include <rtems/bsd/bsd.h> -#endif /* __rtems__ */ +#if MCLBYTES > (2 * 1024) + #error "MCLBYTES to large" +#endif -#ifdef DEBUG -#define debugf(fmt, args...) do { printf("%s(): ", __func__); \ - printf(fmt,##args); } while (0) +#ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA + #define LPC_ETH_CONFIG_TX_BUF_SIZE sizeof(struct mbuf *) #else -#define debugf(fmt, args...) + #define LPC_ETH_CONFIG_TX_BUF_SIZE 1518U #endif -struct lpe_dmamap_arg { - bus_addr_t lpe_dma_busaddr; -}; +#define DEFAULT_PHY 0 +#define WATCHDOG_TIMEOUT 5 + +typedef struct { + uint32_t start; + uint32_t control; +} lpc_eth_transfer_descriptor; + +typedef struct { + uint32_t info; + uint32_t hash_crc; +} lpc_eth_receive_status; + +typedef struct { + uint32_t mac1; + uint32_t mac2; + uint32_t ipgt; + uint32_t ipgr; + uint32_t clrt; + uint32_t maxf; + uint32_t supp; + uint32_t test; + uint32_t mcfg; + uint32_t mcmd; + uint32_t madr; + uint32_t mwtd; + uint32_t mrdd; + uint32_t mind; + uint32_t reserved_0 [2]; + uint32_t sa0; + uint32_t sa1; + uint32_t sa2; + uint32_t reserved_1 [45]; + uint32_t command; + uint32_t status; + uint32_t rxdescriptor; + uint32_t rxstatus; + uint32_t rxdescriptornum; + uint32_t rxproduceindex; + uint32_t rxconsumeindex; + uint32_t txdescriptor; + uint32_t txstatus; + uint32_t txdescriptornum; + uint32_t txproduceindex; + uint32_t txconsumeindex; + uint32_t reserved_2 [10]; + uint32_t tsv0; + uint32_t tsv1; + uint32_t rsv; + uint32_t reserved_3 [3]; + uint32_t flowcontrolcnt; + uint32_t flowcontrolsts; + uint32_t reserved_4 [34]; + uint32_t rxfilterctrl; + uint32_t rxfilterwolsts; + uint32_t rxfilterwolclr; + uint32_t reserved_5 [1]; + uint32_t hashfilterl; + uint32_t hashfilterh; + uint32_t reserved_6 [882]; + uint32_t intstatus; + uint32_t intenable; + uint32_t intclear; + uint32_t intset; + uint32_t reserved_7 [1]; + uint32_t powerdown; +} lpc_eth_controller; + +#define LPE_LOCK(e) mtx_lock(&(e)->mtx) + +#define LPE_UNLOCK(e) mtx_unlock(&(e)->mtx) + +static volatile lpc_eth_controller *const lpc_eth = + (volatile lpc_eth_controller *) LPC_ETH_CONFIG_REG_BASE; + +/* ETH_RX_CTRL */ + +#define ETH_RX_CTRL_SIZE_MASK 0x000007ffU +#define ETH_RX_CTRL_INTERRUPT 0x80000000U + +/* ETH_RX_STAT */ + +#define ETH_RX_STAT_RXSIZE_MASK 0x000007ffU +#define ETH_RX_STAT_BYTES 0x00000100U +#define ETH_RX_STAT_CONTROL_FRAME 0x00040000U +#define ETH_RX_STAT_VLAN 0x00080000U +#define ETH_RX_STAT_FAIL_FILTER 0x00100000U +#define ETH_RX_STAT_MULTICAST 0x00200000U +#define ETH_RX_STAT_BROADCAST 0x00400000U +#define ETH_RX_STAT_CRC_ERROR 0x00800000U +#define ETH_RX_STAT_SYMBOL_ERROR 0x01000000U +#define ETH_RX_STAT_LENGTH_ERROR 0x02000000U +#define ETH_RX_STAT_RANGE_ERROR 0x04000000U +#define ETH_RX_STAT_ALIGNMENT_ERROR 0x08000000U +#define ETH_RX_STAT_OVERRUN 0x10000000U +#define ETH_RX_STAT_NO_DESCRIPTOR 0x20000000U +#define ETH_RX_STAT_LAST_FLAG 0x40000000U +#define ETH_RX_STAT_ERROR 0x80000000U + +/* ETH_TX_CTRL */ + +#define ETH_TX_CTRL_SIZE_MASK 0x7ffU +#define ETH_TX_CTRL_SIZE_SHIFT 0 +#define ETH_TX_CTRL_OVERRIDE 0x04000000U +#define ETH_TX_CTRL_HUGE 0x08000000U +#define ETH_TX_CTRL_PAD 0x10000000U +#define ETH_TX_CTRL_CRC 0x20000000U +#define ETH_TX_CTRL_LAST 0x40000000U +#define ETH_TX_CTRL_INTERRUPT 0x80000000U + +/* ETH_TX_STAT */ + +#define ETH_TX_STAT_COLLISION_COUNT_MASK 0x01e00000U +#define ETH_TX_STAT_DEFER 0x02000000U +#define ETH_TX_STAT_EXCESSIVE_DEFER 0x04000000U +#define ETH_TX_STAT_EXCESSIVE_COLLISION 0x08000000U +#define ETH_TX_STAT_LATE_COLLISION 0x10000000U +#define ETH_TX_STAT_UNDERRUN 0x20000000U +#define ETH_TX_STAT_NO_DESCRIPTOR 0x40000000U +#define ETH_TX_STAT_ERROR 0x80000000U + +/* ETH_INT */ + +#define ETH_INT_RX_OVERRUN 0x00000001U +#define ETH_INT_RX_ERROR 0x00000002U +#define ETH_INT_RX_FINISHED 0x00000004U +#define ETH_INT_RX_DONE 0x00000008U +#define ETH_INT_TX_UNDERRUN 0x00000010U +#define ETH_INT_TX_ERROR 0x00000020U +#define ETH_INT_TX_FINISHED 0x00000040U +#define ETH_INT_TX_DONE 0x00000080U +#define ETH_INT_SOFT 0x00001000U +#define ETH_INT_WAKEUP 0x00002000U + +/* ETH_RX_FIL_CTRL */ + +#define ETH_RX_FIL_CTRL_ACCEPT_UNICAST 0x00000001U +#define ETH_RX_FIL_CTRL_ACCEPT_BROADCAST 0x00000002U +#define ETH_RX_FIL_CTRL_ACCEPT_MULTICAST 0x00000004U +#define ETH_RX_FIL_CTRL_ACCEPT_UNICAST_HASH 0x00000008U +#define ETH_RX_FIL_CTRL_ACCEPT_MULTICAST_HASH 0x00000010U +#define ETH_RX_FIL_CTRL_ACCEPT_PERFECT 0x00000020U +#define ETH_RX_FIL_CTRL_MAGIC_PACKET_WOL 0x00001000U +#define ETH_RX_FIL_CTRL_RX_FILTER_WOL 0x00002000U + +/* ETH_CMD */ + +#define ETH_CMD_RX_ENABLE 0x00000001U +#define ETH_CMD_TX_ENABLE 0x00000002U +#define ETH_CMD_REG_RESET 0x00000008U +#define ETH_CMD_TX_RESET 0x00000010U +#define ETH_CMD_RX_RESET 0x00000020U +#define ETH_CMD_PASS_RUNT_FRAME 0x00000040U +#define ETH_CMD_PASS_RX_FILTER 0X00000080U +#define ETH_CMD_TX_FLOW_CONTROL 0x00000100U +#define ETH_CMD_RMII 0x00000200U +#define ETH_CMD_FULL_DUPLEX 0x00000400U -struct lpe_rxdesc { - struct mbuf * lpe_rxdesc_mbuf; -#ifndef __rtems__ - bus_dmamap_t lpe_rxdesc_dmamap; -#endif /* __rtems__ */ -}; +/* ETH_STAT */ -struct lpe_txdesc { - int lpe_txdesc_first; - struct mbuf * lpe_txdesc_mbuf; -#ifndef __rtems__ - bus_dmamap_t lpe_txdesc_dmamap; -#endif /* __rtems__ */ -}; +#define ETH_STAT_RX_ACTIVE 0x00000001U +#define ETH_STAT_TX_ACTIVE 0x00000002U -struct lpe_chain_data { - bus_dma_tag_t lpe_parent_tag; - bus_dma_tag_t lpe_tx_ring_tag; - bus_dmamap_t lpe_tx_ring_map; - bus_dma_tag_t lpe_tx_status_tag; - bus_dmamap_t lpe_tx_status_map; - bus_dma_tag_t lpe_tx_buf_tag; - bus_dma_tag_t lpe_rx_ring_tag; - bus_dmamap_t lpe_rx_ring_map; - bus_dma_tag_t lpe_rx_status_tag; - bus_dmamap_t lpe_rx_status_map; - bus_dma_tag_t lpe_rx_buf_tag; - struct lpe_rxdesc lpe_rx_desc[LPE_RXDESC_NUM]; - struct lpe_txdesc lpe_tx_desc[LPE_TXDESC_NUM]; - int lpe_tx_prod; - int lpe_tx_last; - int lpe_tx_used; -}; +/* ETH_MAC2 */ -struct lpe_ring_data { - struct lpe_hwdesc * lpe_rx_ring; - struct lpe_hwstatus * lpe_rx_status; - bus_addr_t lpe_rx_ring_phys; - bus_addr_t lpe_rx_status_phys; - struct lpe_hwdesc * lpe_tx_ring; - struct lpe_hwstatus * lpe_tx_status; - bus_addr_t lpe_tx_ring_phys; - bus_addr_t lpe_tx_status_phys; -}; +#define ETH_MAC2_FULL_DUPLEX BSP_BIT32(8) -struct lpe_softc { - struct ifnet * lpe_ifp; - struct mtx lpe_mtx; -#ifndef __rtems__ - phandle_t lpe_ofw; -#endif /* __rtems__ */ - device_t lpe_dev; - device_t lpe_miibus; - uint8_t lpe_enaddr[6]; - struct resource * lpe_mem_res; - struct resource * lpe_irq_res; - void * lpe_intrhand; - bus_space_tag_t lpe_bst; - bus_space_handle_t lpe_bsh; -#define LPE_FLAG_LINK (1 << 0) - uint32_t lpe_flags; - int lpe_watchdog_timer; - struct callout lpe_tick; - struct lpe_chain_data lpe_cdata; - struct lpe_ring_data lpe_rdata; -}; +/* ETH_SUPP */ -static int lpe_probe(device_t); -static int lpe_attach(device_t); -static int lpe_detach(device_t); -static int lpe_miibus_readreg(device_t, int, int); -static int lpe_miibus_writereg(device_t, int, int, int); -static void lpe_miibus_statchg(device_t); - -static void lpe_reset(struct lpe_softc *); -static void lpe_init(void *); -static void lpe_init_locked(struct lpe_softc *); -static void lpe_start(struct ifnet *); -static void lpe_start_locked(struct ifnet *); -static void lpe_stop(struct lpe_softc *); -static void lpe_stop_locked(struct lpe_softc *); -static int lpe_ioctl(struct ifnet *, u_long, caddr_t); -static void lpe_set_rxmode(struct lpe_softc *); -static void lpe_set_rxfilter(struct lpe_softc *); -static void lpe_intr(void *); -static void lpe_rxintr(struct lpe_softc *); -static void lpe_txintr(struct lpe_softc *); -static void lpe_tick(void *); -static void lpe_watchdog(struct lpe_softc *); -static int lpe_encap(struct lpe_softc *, struct mbuf **); -static int lpe_dma_alloc(struct lpe_softc *); -static int lpe_dma_alloc_rx(struct lpe_softc *); -static int lpe_dma_alloc_tx(struct lpe_softc *); -static int lpe_init_rx(struct lpe_softc *); -static int lpe_init_rxbuf(struct lpe_softc *, int); -static void lpe_discard_rxbuf(struct lpe_softc *, int); -static void lpe_dmamap_cb(void *, bus_dma_segment_t *, int, int); -static int lpe_ifmedia_upd(struct ifnet *); -static void lpe_ifmedia_sts(struct ifnet *, struct ifmediareq *); - -#define lpe_lock(_sc) mtx_lock(&(_sc)->lpe_mtx) -#define lpe_unlock(_sc) mtx_unlock(&(_sc)->lpe_mtx) -#define lpe_lock_assert(_sc) mtx_assert(&(_sc)->lpe_mtx, MA_OWNED) - -#define lpe_read_4(_sc, _reg) \ - bus_space_read_4((_sc)->lpe_bst, (_sc)->lpe_bsh, (_reg)) -#define lpe_write_4(_sc, _reg, _val) \ - bus_space_write_4((_sc)->lpe_bst, (_sc)->lpe_bsh, (_reg), (_val)) - -#define LPE_HWDESC_RXERRS (LPE_HWDESC_CRCERROR | LPE_HWDESC_SYMBOLERROR | \ - LPE_HWDESC_LENGTHERROR | LPE_HWDESC_ALIGNERROR | LPE_HWDESC_OVERRUN | \ - LPE_HWDESC_RXNODESCR) - -#define LPE_HWDESC_TXERRS (LPE_HWDESC_EXCDEFER | LPE_HWDESC_EXCCOLL | \ - LPE_HWDESC_LATECOLL | LPE_HWDESC_UNDERRUN | LPE_HWDESC_TXNODESCR) - -static int -lpe_probe(device_t dev) -{ - -#ifndef __rtems__ - if (!ofw_bus_status_okay(dev)) - return (ENXIO); +#define ETH_SUPP_SPEED BSP_BIT32(8) - if (!ofw_bus_is_compatible(dev, "lpc,ethernet")) - return (ENXIO); -#endif /* __rtems__ */ +/* ETH_MCFG */ - device_set_desc(dev, "LPC32x0 10/100 Ethernet"); - return (BUS_PROBE_DEFAULT); -} +#define ETH_MCFG_CLOCK_SELECT(val) BSP_FLD32(val, 2, 4) -static int -lpe_attach(device_t dev) -{ - struct lpe_softc *sc = device_get_softc(dev); - struct ifnet *ifp; -#ifndef __rtems__ - int rid, i; - uint32_t val; -#else /* __rtems__ */ - int rid; -#endif /* __rtems__ */ - - sc->lpe_dev = dev; -#ifndef __rtems__ - sc->lpe_ofw = ofw_bus_get_node(dev); - - i = OF_getprop(sc->lpe_ofw, "local-mac-address", (void *)&sc->lpe_enaddr, 6); - if (i != 6) { - sc->lpe_enaddr[0] = 0x00; - sc->lpe_enaddr[1] = 0x11; - sc->lpe_enaddr[2] = 0x22; - sc->lpe_enaddr[3] = 0x33; - sc->lpe_enaddr[4] = 0x44; - sc->lpe_enaddr[5] = 0x55; - } -#else /* __rtems__ */ - rtems_bsd_get_mac_address(device_get_name(sc->lpe_dev), device_get_unit(sc->lpe_dev), sc->lpe_enaddr); -#endif /* __rtems__ */ - - mtx_init(&sc->lpe_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, - MTX_DEF); - - callout_init_mtx(&sc->lpe_tick, &sc->lpe_mtx, 0); - - rid = 0; - sc->lpe_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, - RF_ACTIVE); - if (!sc->lpe_mem_res) { - device_printf(dev, "cannot allocate memory window\n"); - goto fail; - } - - sc->lpe_bst = rman_get_bustag(sc->lpe_mem_res); - sc->lpe_bsh = rman_get_bushandle(sc->lpe_mem_res); - - rid = 0; - sc->lpe_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, - RF_ACTIVE); - if (!sc->lpe_irq_res) { - device_printf(dev, "cannot allocate interrupt\n"); - goto fail; - } - - sc->lpe_ifp = if_alloc(IFT_ETHER); - if (!sc->lpe_ifp) { - device_printf(dev, "cannot allocated ifnet\n"); - goto fail; - } - - ifp = sc->lpe_ifp; - - if_initname(ifp, device_get_name(dev), device_get_unit(dev)); - ifp->if_softc = sc; - ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; - ifp->if_start = lpe_start; - ifp->if_ioctl = lpe_ioctl; - ifp->if_init = lpe_init; - IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); - ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; - IFQ_SET_READY(&ifp->if_snd); - - ether_ifattach(ifp, sc->lpe_enaddr); - - if (bus_setup_intr(dev, sc->lpe_irq_res, INTR_TYPE_NET, NULL, - lpe_intr, sc, &sc->lpe_intrhand)) { - device_printf(dev, "cannot establish interrupt handler\n"); - ether_ifdetach(ifp); - goto fail; - } - - /* Enable Ethernet clock */ -#ifndef __rtems__ - lpc_pwr_write(dev, LPC_CLKPWR_MACCLK_CTRL, - LPC_CLKPWR_MACCLK_CTRL_REG | - LPC_CLKPWR_MACCLK_CTRL_SLAVE | - LPC_CLKPWR_MACCLK_CTRL_MASTER | - LPC_CLKPWR_MACCLK_CTRL_HDWINF(3)); -#else /* __rtems__ */ -#ifdef LPC32XX_ETHERNET_RMII - lpc_pwr_write(dev, LPC_CLKPWR_MACCLK_CTRL, - LPC_CLKPWR_MACCLK_CTRL_REG | - LPC_CLKPWR_MACCLK_CTRL_SLAVE | - LPC_CLKPWR_MACCLK_CTRL_MASTER | - LPC_CLKPWR_MACCLK_CTRL_HDWINF(3)); -#else - lpc_pwr_write(dev, LPC_CLKPWR_MACCLK_CTRL, - LPC_CLKPWR_MACCLK_CTRL_REG | - LPC_CLKPWR_MACCLK_CTRL_SLAVE | - LPC_CLKPWR_MACCLK_CTRL_MASTER | - LPC_CLKPWR_MACCLK_CTRL_HDWINF(1)); -#endif -#endif /* __rtems__ */ - - /* Reset chip */ - lpe_reset(sc); - - /* Initialize MII */ -#ifndef __rtems__ - val = lpe_read_4(sc, LPE_COMMAND); - lpe_write_4(sc, LPE_COMMAND, val | LPE_COMMAND_RMII); - - if (mii_attach(dev, &sc->lpe_miibus, ifp, lpe_ifmedia_upd, - lpe_ifmedia_sts, BMSR_DEFCAPMASK, 0x01, - MII_OFFSET_ANY, 0)) { - device_printf(dev, "cannot find PHY\n"); - goto fail; - } -#else /* __rtems__ */ - if (mii_attach(dev, &sc->lpe_miibus, ifp, lpe_ifmedia_upd, - lpe_ifmedia_sts, BMSR_DEFCAPMASK, MII_PHY_ANY, - MII_OFFSET_ANY, 0)) { - device_printf(dev, "cannot find PHY\n"); - goto fail; - } -#endif /* __rtems__ */ - - lpe_dma_alloc(sc); - - return (0); - -fail: - if (sc->lpe_ifp) - if_free(sc->lpe_ifp); - if (sc->lpe_intrhand) - bus_teardown_intr(dev, sc->lpe_irq_res, sc->lpe_intrhand); - if (sc->lpe_irq_res) - bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lpe_irq_res); - if (sc->lpe_mem_res) - bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->lpe_mem_res); - return (ENXIO); -} +#define ETH_MCFG_RESETMIIMGMT BSP_BIT32(15) -static int -lpe_detach(device_t dev) -{ - struct lpe_softc *sc = device_get_softc(dev); +/* ETH_MCMD */ - lpe_stop(sc); +#define ETH_MCMD_READ BSP_BIT32(0) +#define ETH_MCMD_SCAN BSP_BIT32(1) - if_free(sc->lpe_ifp); - bus_teardown_intr(dev, sc->lpe_irq_res, sc->lpe_intrhand); - bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lpe_irq_res); - bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->lpe_mem_res); +/* ETH_MADR */ - return (0); -} +#define ETH_MADR_REG(val) BSP_FLD32(val, 0, 4) +#define ETH_MADR_PHY(val) BSP_FLD32(val, 8, 12) -static int -lpe_miibus_readreg(device_t dev, int phy, int reg) -{ - struct lpe_softc *sc = device_get_softc(dev); - uint32_t val; - int result; +/* ETH_MIND */ - lpe_write_4(sc, LPE_MCMD, LPE_MCMD_READ); - lpe_write_4(sc, LPE_MADR, - (reg & LPE_MADR_REGMASK) << LPE_MADR_REGSHIFT | - (phy & LPE_MADR_PHYMASK) << LPE_MADR_PHYSHIFT); +#define ETH_MIND_BUSY BSP_BIT32(0) +#define ETH_MIND_SCANNING BSP_BIT32(1) +#define ETH_MIND_NOT_VALID BSP_BIT32(2) +#define ETH_MIND_MII_LINK_FAIL BSP_BIT32(3) - val = lpe_read_4(sc, LPE_MIND); +/* Events */ - /* Wait until request is completed */ - while (val & LPE_MIND_BUSY) { - val = lpe_read_4(sc, LPE_MIND); - DELAY(10); - } +#define LPC_ETH_EVENT_INIT_RX RTEMS_EVENT_0 - if (val & LPE_MIND_INVALID) - return (0); +#define LPC_ETH_EVENT_INIT_TX RTEMS_EVENT_1 - lpe_write_4(sc, LPE_MCMD, 0); - result = (lpe_read_4(sc, LPE_MRDD) & LPE_MRDD_DATAMASK); - debugf("phy=%d reg=%d result=0x%04x\n", phy, reg, result); +#define LPC_ETH_EVENT_INTERRUPT RTEMS_EVENT_3 - return (result); -} +#define LPC_ETH_EVENT_STOP RTEMS_EVENT_4 -static int -lpe_miibus_writereg(device_t dev, int phy, int reg, int data) -{ - struct lpe_softc *sc = device_get_softc(dev); - uint32_t val; +/* Status */ - debugf("phy=%d reg=%d data=0x%04x\n", phy, reg, data); +#define LPC_ETH_INTERRUPT_RECEIVE \ + (ETH_INT_RX_ERROR | ETH_INT_RX_FINISHED | ETH_INT_RX_DONE) - lpe_write_4(sc, LPE_MCMD, LPE_MCMD_WRITE); - lpe_write_4(sc, LPE_MADR, - (reg & LPE_MADR_REGMASK) << LPE_MADR_REGSHIFT | - (phy & LPE_MADR_PHYMASK) << LPE_MADR_PHYSHIFT); +#define LPC_ETH_RX_STAT_ERRORS \ + (ETH_RX_STAT_CRC_ERROR \ + | ETH_RX_STAT_SYMBOL_ERROR \ + | ETH_RX_STAT_LENGTH_ERROR \ + | ETH_RX_STAT_ALIGNMENT_ERROR \ + | ETH_RX_STAT_OVERRUN \ + | ETH_RX_STAT_NO_DESCRIPTOR) - lpe_write_4(sc, LPE_MWTD, (data & LPE_MWTD_DATAMASK)); +#define LPC_ETH_LAST_FRAGMENT_FLAGS \ + (ETH_TX_CTRL_OVERRIDE \ + | ETH_TX_CTRL_PAD \ + | ETH_TX_CTRL_CRC \ + | ETH_TX_CTRL_INTERRUPT \ + | ETH_TX_CTRL_LAST) - val = lpe_read_4(sc, LPE_MIND); +/* Debug */ - /* Wait until request is completed */ - while (val & LPE_MIND_BUSY) { - val = lpe_read_4(sc, LPE_MIND); - DELAY(10); - } +#ifdef DEBUG + #define LPC_ETH_PRINTF(...) printf(__VA_ARGS__) + #define LPC_ETH_PRINTK(...) printk(__VA_ARGS__) +#else + #define LPC_ETH_PRINTF(...) + #define LPC_ETH_PRINTK(...) +#endif - return (0); +typedef enum { + LPC_ETH_STATE_NOT_INITIALIZED = 0, + LPC_ETH_STATE_DOWN, + LPC_ETH_STATE_UP +} lpc_eth_state; + +typedef struct { + device_t dev; + struct ifnet *ifp; + struct mtx mtx; + lpc_eth_state state; + uint32_t anlpar; + struct callout watchdog_callout; + rtems_id receive_task; + unsigned rx_unit_count; + unsigned tx_unit_count; + volatile lpc_eth_transfer_descriptor *rx_desc_table; + volatile lpc_eth_receive_status *rx_status_table; + struct mbuf **rx_mbuf_table; + volatile lpc_eth_transfer_descriptor *tx_desc_table; + volatile uint32_t *tx_status_table; + void *tx_buf_table; + uint32_t tx_produce_index; + uint32_t tx_consume_index; + unsigned received_frames; + unsigned receive_interrupts; + unsigned transmitted_frames; + unsigned receive_drop_errors; + unsigned receive_overrun_errors; + unsigned receive_fragment_errors; + unsigned receive_crc_errors; + unsigned receive_symbol_errors; + unsigned receive_length_errors; + unsigned receive_alignment_errors; + unsigned receive_no_descriptor_errors; + unsigned receive_fatal_errors; + unsigned transmit_underrun_errors; + unsigned transmit_late_collision_errors; + unsigned transmit_excessive_collision_errors; + unsigned transmit_excessive_defer_errors; + unsigned transmit_no_descriptor_errors; + unsigned transmit_overflow_errors; + unsigned transmit_fatal_errors; + uint32_t phy_id; + int phy; + rtems_vector_number interrupt_number; + rtems_id control_task; + int if_flags; + struct ifmedia ifmedia; +} lpc_eth_driver_entry; + +static void lpc_eth_interface_watchdog(void *arg); + +static void lpc_eth_setup_rxfilter(lpc_eth_driver_entry *e); + +static void lpc_eth_control_request_complete(const lpc_eth_driver_entry *e) +{ + rtems_status_code sc = rtems_event_transient_send(e->control_task); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); } -static void -lpe_miibus_statchg(device_t dev) +static void lpc_eth_control_request( + lpc_eth_driver_entry *e, + rtems_id task, + rtems_event_set event +) { - struct lpe_softc *sc = device_get_softc(dev); - struct mii_data *mii = device_get_softc(sc->lpe_miibus); - -#ifndef __rtems__ - lpe_lock(sc); -#endif /* __rtems__ */ - - if ((mii->mii_media_status & IFM_ACTIVE) && - (mii->mii_media_status & IFM_AVALID)) - sc->lpe_flags |= LPE_FLAG_LINK; - else - sc->lpe_flags &= ~LPE_FLAG_LINK; - -#ifndef __rtems__ - lpe_unlock(sc); -#endif /* __rtems__ */ + rtems_status_code sc = RTEMS_SUCCESSFUL; + + e->control_task = rtems_task_self(); + + sc = rtems_event_send(task, event); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); + + sc = rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); + + e->control_task = 0; } -static void -lpe_reset(struct lpe_softc *sc) +static inline uint32_t lpc_eth_increment( + uint32_t value, + uint32_t cycle +) { - uint32_t mac1; - -#ifndef __rtems__ - /* Enter soft reset mode */ - mac1 = lpe_read_4(sc, LPE_MAC1); - lpe_write_4(sc, LPE_MAC1, mac1 | LPE_MAC1_SOFTRESET | LPE_MAC1_RESETTX | - LPE_MAC1_RESETMCSTX | LPE_MAC1_RESETRX | LPE_MAC1_RESETMCSRX); - - /* Reset registers, Tx path and Rx path */ - lpe_write_4(sc, LPE_COMMAND, LPE_COMMAND_REGRESET | - LPE_COMMAND_TXRESET | LPE_COMMAND_RXRESET); - - /* Set station address */ - lpe_write_4(sc, LPE_SA2, sc->lpe_enaddr[1] << 8 | sc->lpe_enaddr[0]); - lpe_write_4(sc, LPE_SA1, sc->lpe_enaddr[3] << 8 | sc->lpe_enaddr[2]); - lpe_write_4(sc, LPE_SA0, sc->lpe_enaddr[5] << 8 | sc->lpe_enaddr[4]); - - /* Leave soft reset mode */ - mac1 = lpe_read_4(sc, LPE_MAC1); - lpe_write_4(sc, LPE_MAC1, mac1 & ~(LPE_MAC1_SOFTRESET | LPE_MAC1_RESETTX | - LPE_MAC1_RESETMCSTX | LPE_MAC1_RESETRX | LPE_MAC1_RESETMCSRX)); -#else /* __rtems__ */ - /* Reset registers, Tx path and Rx path */ - lpe_write_4(sc, LPE_COMMAND, LPE_COMMAND_REGRESET | LPE_COMMAND_TXRESET | LPE_COMMAND_RXRESET); - - /* Enter soft reset mode */ - mac1 = lpe_read_4(sc, LPE_MAC1); - lpe_write_4(sc, LPE_MAC1, mac1 | LPE_MAC1_SOFTRESET | LPE_MAC1_RESETTX | - LPE_MAC1_RESETMCSTX | LPE_MAC1_RESETRX | LPE_MAC1_RESETMCSRX); - - /* Leave soft reset mode */ - mac1 = lpe_read_4(sc, LPE_MAC1); - lpe_write_4(sc, LPE_MAC1, mac1 & ~(LPE_MAC1_SOFTRESET | LPE_MAC1_RESETTX | - LPE_MAC1_RESETMCSTX | LPE_MAC1_RESETRX | LPE_MAC1_RESETMCSRX)); - - /* Reinitialize registers */ - lpe_write_4(sc, LPE_MCFG, LPE_MCFG_CLKSEL(0x7)); - lpe_write_4(sc, LPE_MAC2, LPE_MAC2_PADCRCENABLE | LPE_MAC2_CRCENABLE | LPE_MAC2_FULLDUPLEX); - lpe_write_4(sc, LPE_IPGT, 0x15); - lpe_write_4(sc, LPE_IPGR, 0x12); - lpe_write_4(sc, LPE_CLRT, 0x370f); - lpe_write_4(sc, LPE_MAXF, 0x0600); - lpe_write_4(sc, LPE_SUPP, LPE_SUPP_SPEED); - lpe_write_4(sc, LPE_TEST, 0x0); -#ifdef LPC32XX_ETHERNET_RMII - lpe_write_4(sc, LPE_COMMAND, LPE_COMMAND_FULLDUPLEX | LPE_COMMAND_RMII); -#else - lpe_write_4(sc, LPE_COMMAND, LPE_COMMAND_FULLDUPLEX); -#endif - lpe_write_4(sc, LPE_INTENABLE, 0x0); - lpe_write_4(sc, LPE_INTCLEAR, 0x30ff); - lpe_write_4(sc, LPE_POWERDOWN, 0x0); - - /* Set station address */ - lpe_write_4(sc, LPE_SA2, sc->lpe_enaddr[1] << 8 | sc->lpe_enaddr[0]); - lpe_write_4(sc, LPE_SA1, sc->lpe_enaddr[3] << 8 | sc->lpe_enaddr[2]); - lpe_write_4(sc, LPE_SA0, sc->lpe_enaddr[5] << 8 | sc->lpe_enaddr[4]); -#endif /* __rtems__ */ + if (value < cycle) { + return ++value; + } else { + return 0; + } } -static void -lpe_init(void *arg) +static void lpc_eth_enable_promiscous_mode(bool enable) { - struct lpe_softc *sc = (struct lpe_softc *)arg; - - lpe_lock(sc); - lpe_init_locked(sc); - lpe_unlock(sc); + if (enable) { + lpc_eth->rxfilterctrl = ETH_RX_FIL_CTRL_ACCEPT_UNICAST + | ETH_RX_FIL_CTRL_ACCEPT_MULTICAST + | ETH_RX_FIL_CTRL_ACCEPT_BROADCAST; + } else { + lpc_eth->rxfilterctrl = ETH_RX_FIL_CTRL_ACCEPT_PERFECT + | ETH_RX_FIL_CTRL_ACCEPT_MULTICAST_HASH + | ETH_RX_FIL_CTRL_ACCEPT_BROADCAST; + } } -static void -lpe_init_locked(struct lpe_softc *sc) +static void lpc_eth_interrupt_handler(void *arg) { - struct ifnet *ifp = sc->lpe_ifp; - uint32_t cmd, mac1; - - lpe_lock_assert(sc); - - if (ifp->if_drv_flags & IFF_DRV_RUNNING) - return; + lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) arg; + rtems_event_set re = 0; + rtems_event_set te = 0; + uint32_t ie = 0; + + /* Get interrupt status */ + uint32_t im = lpc_eth->intenable; + uint32_t is = lpc_eth->intstatus & im; + + /* Check receive interrupts */ + if ((is & (ETH_INT_RX_OVERRUN | ETH_INT_TX_UNDERRUN)) != 0) { + if ((is & ETH_INT_RX_OVERRUN) != 0) { + re = LPC_ETH_EVENT_INIT_RX; + ++e->receive_fatal_errors; + } + + if ((is & ETH_INT_TX_UNDERRUN) != 0) { + re = LPC_ETH_EVENT_INIT_TX; + ++e->transmit_fatal_errors; + } + } else if ((is & LPC_ETH_INTERRUPT_RECEIVE) != 0) { + re = LPC_ETH_EVENT_INTERRUPT; + ie |= LPC_ETH_INTERRUPT_RECEIVE; + ++e->receive_interrupts; + } + + /* Send events to receive task */ + if (re != 0) { + (void) rtems_event_send(e->receive_task, re); + } + + LPC_ETH_PRINTK("interrupt: rx = 0x%08x, tx = 0x%08x\n", re, te); + + /* Update interrupt mask */ + lpc_eth->intenable = im & ~ie; + + /* Clear interrupts */ + lpc_eth->intclear = is; +} - /* Enable Tx and Rx */ - cmd = lpe_read_4(sc, LPE_COMMAND); - lpe_write_4(sc, LPE_COMMAND, cmd | LPE_COMMAND_RXENABLE | - LPE_COMMAND_TXENABLE | LPE_COMMAND_PASSRUNTFRAME); +static void lpc_eth_enable_receive_interrupts(void) +{ + rtems_interrupt_level level; - /* Enable receive */ - mac1 = lpe_read_4(sc, LPE_MAC1); -#ifdef __rtems__ - (void)mac1; -#endif /* __rtems__ */ - lpe_write_4(sc, LPE_MAC1, /*mac1 |*/ LPE_MAC1_RXENABLE | LPE_MAC1_PASSALL); + rtems_interrupt_disable(level); + lpc_eth->intenable |= LPC_ETH_INTERRUPT_RECEIVE; + rtems_interrupt_enable(level); +} - lpe_write_4(sc, LPE_MAC2, LPE_MAC2_CRCENABLE | LPE_MAC2_PADCRCENABLE | - LPE_MAC2_FULLDUPLEX); +static void lpc_eth_disable_receive_interrupts(void) +{ + rtems_interrupt_level level; - lpe_write_4(sc, LPE_MCFG, LPE_MCFG_CLKSEL(7)); + rtems_interrupt_disable(level); + lpc_eth->intenable &= ~LPC_ETH_INTERRUPT_RECEIVE; + rtems_interrupt_enable(level); +} - /* Set up Rx filter */ - lpe_set_rxmode(sc); +static void lpc_eth_initialize_transmit(lpc_eth_driver_entry *e) +{ + volatile uint32_t *const status = e->tx_status_table; + uint32_t const index_max = e->tx_unit_count - 1; + volatile lpc_eth_transfer_descriptor *const desc = e->tx_desc_table; + #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA + struct mbuf **const mbufs = e->tx_buf_table; + #else + char *const buf = e->tx_buf_table; + #endif + uint32_t produce_index; + + /* Disable transmitter */ + lpc_eth->command &= ~ETH_CMD_TX_ENABLE; + + /* Wait for inactive status */ + while ((lpc_eth->status & ETH_STAT_TX_ACTIVE) != 0) { + /* Wait */ + } + + /* Reset */ + lpc_eth->command |= ETH_CMD_TX_RESET; + + /* Transmit descriptors */ + lpc_eth->txdescriptornum = index_max; + lpc_eth->txdescriptor = (uint32_t) desc; + lpc_eth->txstatus = (uint32_t) status; + + #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA + /* Discard outstanding fragments (= data loss) */ + for (produce_index = 0; produce_index <= index_max; ++produce_index) { + m_freem(mbufs [produce_index]); + mbufs [produce_index] = NULL; + } + #else + /* Initialize descriptor table */ + for (produce_index = 0; produce_index <= index_max; ++produce_index) { + desc [produce_index].start = + (uint32_t) (buf + produce_index * LPC_ETH_CONFIG_TX_BUF_SIZE); + } + #endif + + /* Initialize indices */ + e->tx_produce_index = lpc_eth->txproduceindex; + e->tx_consume_index = lpc_eth->txconsumeindex; + + /* Enable transmitter */ + lpc_eth->command |= ETH_CMD_TX_ENABLE; +} - /* Enable interrupts */ - lpe_write_4(sc, LPE_INTENABLE, LPE_INT_RXOVERRUN | LPE_INT_RXERROR | - LPE_INT_RXFINISH | LPE_INT_RXDONE | LPE_INT_TXUNDERRUN | - LPE_INT_TXERROR | LPE_INT_TXFINISH | LPE_INT_TXDONE); +#define LPC_ETH_RX_DATA_OFFSET 2 - sc->lpe_cdata.lpe_tx_prod = 0; - sc->lpe_cdata.lpe_tx_last = 0; - sc->lpe_cdata.lpe_tx_used = 0; +static struct mbuf *lpc_eth_new_mbuf(struct ifnet *ifp, bool wait) +{ + struct mbuf *m = NULL; + int mw = wait ? M_WAITOK : M_NOWAIT; + + MGETHDR(m, mw, MT_DATA); + if (m != NULL) { + MCLGET(m, mw); + if ((m->m_flags & M_EXT) != 0) { + /* Set receive interface */ + m->m_pkthdr.rcvif = ifp; + + /* Adjust by two bytes for proper IP header alignment */ + m->m_data = mtod(m, char *) + LPC_ETH_RX_DATA_OFFSET; + + return m; + } else { + m_free(m); + } + } + + return NULL; +} - lpe_init_rx(sc); +static bool lpc_eth_add_new_mbuf( + struct ifnet *ifp, + volatile lpc_eth_transfer_descriptor *desc, + struct mbuf **mbufs, + uint32_t i, + bool wait +) +{ + /* New mbuf */ + struct mbuf *m = lpc_eth_new_mbuf(ifp, wait); + + /* Check mbuf */ + if (m != NULL) { + /* Cache invalidate */ + rtems_cache_invalidate_multiple_data_lines( + mtod(m, void *), + MCLBYTES - LPC_ETH_RX_DATA_OFFSET + ); + + /* Add mbuf to queue */ + desc [i].start = mtod(m, uint32_t); + desc [i].control = (MCLBYTES - LPC_ETH_RX_DATA_OFFSET - 1) + | ETH_RX_CTRL_INTERRUPT; + + /* Cache flush of descriptor */ + rtems_cache_flush_multiple_data_lines( + (void *) &desc [i], + sizeof(desc [0]) + ); + + /* Add mbuf to table */ + mbufs [i] = m; + + return true; + } else { + return false; + } +} - /* Initialize Rx packet and status descriptor heads */ - lpe_write_4(sc, LPE_RXDESC, sc->lpe_rdata.lpe_rx_ring_phys); - lpe_write_4(sc, LPE_RXSTATUS, sc->lpe_rdata.lpe_rx_status_phys); - lpe_write_4(sc, LPE_RXDESC_NUMBER, LPE_RXDESC_NUM - 1); - lpe_write_4(sc, LPE_RXDESC_CONS, 0); +static void lpc_eth_receive_task(rtems_task_argument arg) +{ + rtems_status_code sc = RTEMS_SUCCESSFUL; + rtems_event_set events = 0; + lpc_eth_driver_entry *const e = (lpc_eth_driver_entry *) arg; + struct ifnet *const ifp = e->ifp; + volatile lpc_eth_transfer_descriptor *const desc = e->rx_desc_table; + volatile lpc_eth_receive_status *const status = e->rx_status_table; + struct mbuf **const mbufs = e->rx_mbuf_table; + uint32_t const index_max = e->rx_unit_count - 1; + uint32_t produce_index = 0; + uint32_t consume_index = 0; + + LPC_ETH_PRINTF("%s\n", __func__); + + /* Main event loop */ + while (true) { + /* Wait for events */ + sc = rtems_event_receive( + LPC_ETH_EVENT_INIT_RX + | LPC_ETH_EVENT_INIT_TX + | LPC_ETH_EVENT_STOP + | LPC_ETH_EVENT_INTERRUPT, + RTEMS_EVENT_ANY | RTEMS_WAIT, + RTEMS_NO_TIMEOUT, + &events + ); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); + + LPC_ETH_PRINTF("rx: wake up: 0x%08" PRIx32 "\n", events); + + /* Stop receiver? */ + if ((events & LPC_ETH_EVENT_STOP) != 0) { + lpc_eth_control_request_complete(e); + + /* Wait for events */ + continue; + } + + /* Initialize receiver or transmitter? */ + if ((events & (LPC_ETH_EVENT_INIT_RX | LPC_ETH_EVENT_INIT_TX)) != 0) { + if ((events & LPC_ETH_EVENT_INIT_RX) != 0) { + /* Disable receive interrupts */ + lpc_eth_disable_receive_interrupts(); + + /* Disable receiver */ + lpc_eth->command &= ~ETH_CMD_RX_ENABLE; + + /* Wait for inactive status */ + while ((lpc_eth->status & ETH_STAT_RX_ACTIVE) != 0) { + /* Wait */ + } + + /* Reset */ + lpc_eth->command |= ETH_CMD_RX_RESET; + + /* Clear receive interrupts */ + lpc_eth->intclear = LPC_ETH_INTERRUPT_RECEIVE; + + /* Move existing mbufs to the front */ + consume_index = 0; + for (produce_index = 0; produce_index <= index_max; ++produce_index) { + if (mbufs [produce_index] != NULL) { + mbufs [consume_index] = mbufs [produce_index]; + ++consume_index; + } + } + + /* Fill receive queue */ + for ( + produce_index = consume_index; + produce_index <= index_max; + ++produce_index + ) { + lpc_eth_add_new_mbuf(ifp, desc, mbufs, produce_index, true); + } + + /* Receive descriptor table */ + lpc_eth->rxdescriptornum = index_max; + lpc_eth->rxdescriptor = (uint32_t) desc; + lpc_eth->rxstatus = (uint32_t) status; + + /* Initialize indices */ + produce_index = lpc_eth->rxproduceindex; + consume_index = lpc_eth->rxconsumeindex; + + /* Enable receiver */ + lpc_eth->command |= ETH_CMD_RX_ENABLE; + + /* Enable receive interrupts */ + lpc_eth_enable_receive_interrupts(); + + lpc_eth_control_request_complete(e); + } + + if ((events & LPC_ETH_EVENT_INIT_TX) != 0) { + LPE_LOCK(e); + lpc_eth_initialize_transmit(e); + LPE_UNLOCK(e); + } + + /* Wait for events */ + continue; + } + + while (true) { + /* Clear receive interrupt status */ + lpc_eth->intclear = LPC_ETH_INTERRUPT_RECEIVE; + + /* Get current produce index */ + produce_index = lpc_eth->rxproduceindex; + + if (consume_index != produce_index) { + uint32_t stat = 0; + + /* Fragment status */ + rtems_cache_invalidate_multiple_data_lines( + (void *) &status [consume_index], + sizeof(status [0]) + ); + stat = status [consume_index].info; + + if ( + (stat & ETH_RX_STAT_LAST_FLAG) != 0 + && (stat & LPC_ETH_RX_STAT_ERRORS) == 0 + ) { + /* Received mbuf */ + struct mbuf *m = mbufs [consume_index]; + + if (lpc_eth_add_new_mbuf(ifp, desc, mbufs, consume_index, false)) { + /* Discard Ethernet CRC */ + int sz = (int) (stat & ETH_RX_STAT_RXSIZE_MASK) + 1 - ETHER_CRC_LEN; + + /* Update mbuf */ + m->m_len = sz; + m->m_pkthdr.len = sz; + + LPC_ETH_PRINTF("rx: %02" PRIu32 ": %u\n", consume_index, sz); + + /* Hand over */ + (*ifp->if_input)(ifp, m); + + /* Increment received frames counter */ + ++e->received_frames; + } else { + ++e->receive_drop_errors; + } + } else { + /* Update error counters */ + if ((stat & ETH_RX_STAT_OVERRUN) != 0) { + ++e->receive_overrun_errors; + } + if ((stat & ETH_RX_STAT_LAST_FLAG) == 0) { + ++e->receive_fragment_errors; + } + if ((stat & ETH_RX_STAT_CRC_ERROR) != 0) { + ++e->receive_crc_errors; + } + if ((stat & ETH_RX_STAT_SYMBOL_ERROR) != 0) { + ++e->receive_symbol_errors; + } + if ((stat & ETH_RX_STAT_LENGTH_ERROR) != 0) { + ++e->receive_length_errors; + } + if ((stat & ETH_RX_STAT_ALIGNMENT_ERROR) != 0) { + ++e->receive_alignment_errors; + } + if ((stat & ETH_RX_STAT_NO_DESCRIPTOR) != 0) { + ++e->receive_no_descriptor_errors; + } + } + + /* Increment and update consume index */ + consume_index = lpc_eth_increment(consume_index, index_max); + lpc_eth->rxconsumeindex = consume_index; + } else { + /* Nothing to do, enable receive interrupts */ + lpc_eth_enable_receive_interrupts(); + break; + } + } + } +} - /* Initialize Tx packet and status descriptor heads */ - lpe_write_4(sc, LPE_TXDESC, sc->lpe_rdata.lpe_tx_ring_phys); - lpe_write_4(sc, LPE_TXSTATUS, sc->lpe_rdata.lpe_tx_status_phys); - lpe_write_4(sc, LPE_TXDESC_NUMBER, LPE_TXDESC_NUM - 1); - lpe_write_4(sc, LPE_TXDESC_PROD, 0); +static struct mbuf *lpc_eth_next_fragment( + struct ifnet *ifp, + struct mbuf *m, + uint32_t *ctrl +) +{ + struct mbuf *n; + int size; + + while (true) { + /* Get fragment size */ + size = m->m_len; + + if (size > 0) { + /* Now we have a not empty fragment */ + break; + } else { + /* Skip empty fragments */ + m = m->m_next; + + if (m == NULL) { + return NULL; + } + } + } + + /* Set fragment size */ + *ctrl = (uint32_t) (size - 1); + + /* Discard empty successive fragments */ + n = m->m_next; + while (n != NULL && n->m_len <= 0) { + n = m_free(n); + } + m->m_next = n; + + /* Is our fragment the last in the frame? */ + if (n == NULL) { + *ctrl |= LPC_ETH_LAST_FRAGMENT_FLAGS; + } + + return m; +} - ifp->if_drv_flags |= IFF_DRV_RUNNING; - ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; +static void lpc_eth_tx_reclaim(lpc_eth_driver_entry *e, struct ifnet *ifp) +{ + volatile uint32_t *const status = e->tx_status_table; + volatile lpc_eth_transfer_descriptor *const desc = e->tx_desc_table; + #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA + struct mbuf **const mbufs = e->tx_buf_table; + #else + char *const buf = e->tx_buf_table; + #endif + uint32_t const index_max = e->tx_unit_count - 1; + uint32_t consume_index = e->tx_consume_index; + + /* Free consumed fragments */ + while (true) { + /* Save last known consume index */ + uint32_t c = consume_index; + + /* Get new consume index */ + consume_index = lpc_eth->txconsumeindex; + + /* Nothing consumed in the meantime? */ + if (c == consume_index) { + break; + } + + while (c != consume_index) { + uint32_t s = status [c]; + + /* Update error counters */ + if ((s & (ETH_TX_STAT_ERROR | ETH_TX_STAT_NO_DESCRIPTOR)) != 0) { + if ((s & ETH_TX_STAT_UNDERRUN) != 0) { + ++e->transmit_underrun_errors; + } + if ((s & ETH_TX_STAT_LATE_COLLISION) != 0) { + ++e->transmit_late_collision_errors; + } + if ((s & ETH_TX_STAT_EXCESSIVE_COLLISION) != 0) { + ++e->transmit_excessive_collision_errors; + } + if ((s & ETH_TX_STAT_EXCESSIVE_DEFER) != 0) { + ++e->transmit_excessive_defer_errors; + } + if ((s & ETH_TX_STAT_NO_DESCRIPTOR) != 0) { + ++e->transmit_no_descriptor_errors; + } + } + + #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA + /* Release mbuf */ + m_freem(mbufs [c]); + mbufs [c] = NULL; + #endif + + /* Next consume index */ + c = lpc_eth_increment(c, index_max); + } + } + + e->tx_consume_index = consume_index; +} - callout_reset(&sc->lpe_tick, hz, lpe_tick, sc); +static int lpc_eth_tx_enqueue( + lpc_eth_driver_entry *e, + struct ifnet *ifp, + struct mbuf *m0 +) +{ + volatile lpc_eth_transfer_descriptor *const desc = e->tx_desc_table; + #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA + struct mbuf **const mbufs = e->tx_buf_table; + #else + char *const buf = e->tx_buf_table; + uint32_t frame_length; + char *frame_buffer; + #endif + uint32_t const index_max = e->tx_unit_count - 1; + uint32_t produce_index = e->tx_produce_index; + uint32_t consume_index = e->tx_consume_index; + struct mbuf *m = m0; + + while (true) { + uint32_t ctrl; + + /* Compute next produce index */ + uint32_t p = lpc_eth_increment(produce_index, index_max); + + /* Queue full? */ + if (p == consume_index) { + LPC_ETH_PRINTF("tx: full queue: 0x%08x\n", m); + + /* The queue is full */ + return ENOBUFS; + } + + /* Get next fragment and control value */ + m = lpc_eth_next_fragment(ifp, m, &ctrl); + + /* New fragment? */ + if (m != NULL) { + #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA + /* Set the transfer data */ + rtems_cache_flush_multiple_data_lines( + mtod(m, const void *), + (size_t) m->m_len + ); + desc [produce_index].start = mtod(m, uint32_t); + desc [produce_index].control = ctrl; + rtems_cache_flush_multiple_data_lines( + (void *) &desc [produce_index], + sizeof(desc [0]) + ); + + LPC_ETH_PRINTF( + "tx: %02" PRIu32 ": %u %s\n", + produce_index, m->m_len, + (ctrl & ETH_TX_CTRL_LAST) != 0 ? "L" : "" + ); + + /* Next produce index */ + produce_index = p; + + /* Last fragment of a frame? */ + if ((ctrl & ETH_TX_CTRL_LAST) != 0) { + /* Update the produce index */ + lpc_eth->txproduceindex = produce_index; + e->tx_produce_index = produce_index; + + mbufs [produce_index] = m0; + + /* Increment transmitted frames counter */ + ++e->transmitted_frames; + + return 0; + } + + /* Next fragment of the frame */ + m = m->m_next; + #else + size_t fragment_length = (size_t) m->m_len; + void *fragment_start = mtod(m, void *); + uint32_t new_frame_length = frame_length + fragment_length; + + /* Check buffer size */ + if (new_frame_length > LPC_ETH_CONFIG_TX_BUF_SIZE) { + LPC_ETH_PRINTF("tx: overflow\n"); + + /* Discard overflow data */ + new_frame_length = LPC_ETH_CONFIG_TX_BUF_SIZE; + fragment_length = new_frame_length - frame_length; + + /* Finalize frame */ + ctrl |= LPC_ETH_LAST_FRAGMENT_FLAGS; + + /* Update error counter */ + ++e->transmit_overflow_errors; + } + + LPC_ETH_PRINTF( + "tx: copy: %" PRIu32 "%s%s\n", + fragment_length, + (m->m_flags & M_EXT) != 0 ? ", E" : "", + (m->m_flags & M_PKTHDR) != 0 ? ", H" : "" + ); + + /* Copy fragment to buffer in Ethernet RAM */ + memcpy(frame_buffer, fragment_start, fragment_length); + + if ((ctrl & ETH_TX_CTRL_LAST) != 0) { + /* Finalize descriptor */ + desc [produce_index].control = (ctrl & ~ETH_TX_CTRL_SIZE_MASK) + | (new_frame_length - 1); + + LPC_ETH_PRINTF( + "tx: %02" PRIu32 ": %" PRIu32 "\n", + produce_index, + new_frame_length + ); + + /* Cache flush of data */ + rtems_cache_flush_multiple_data_lines( + (const void *) desc [produce_index].start, + new_frame_length + ); + + /* Cache flush of descriptor */ + rtems_cache_flush_multiple_data_lines( + (void *) &desc [produce_index], + sizeof(desc [0]) + ); + + /* Next produce index */ + produce_index = p; + + /* Update the produce index */ + lpc_eth->txproduceindex = produce_index; + + /* Fresh frame length and buffer start */ + frame_length = 0; + frame_buffer = (char *) desc [produce_index].start; + + /* Increment transmitted frames counter */ + ++e->transmitted_frames; + } else { + /* New frame length */ + frame_length = new_frame_length; + + /* Update current frame buffer start */ + frame_buffer += fragment_length; + } + + /* Free mbuf and get next */ + m = m_free(m); + #endif + } else { + /* Nothing to transmit */ + m_freem(m0); + return 0; + } + } } -static void -lpe_start(struct ifnet *ifp) +static int lpc_eth_mdio_wait_for_not_busy(void) { - struct lpe_softc *sc = (struct lpe_softc *)ifp->if_softc; + rtems_interval one_second = rtems_clock_get_ticks_per_second(); + rtems_interval i = 0; - lpe_lock(sc); - lpe_start_locked(ifp); - lpe_unlock(sc); + while ((lpc_eth->mind & ETH_MIND_BUSY) != 0 && i < one_second) { + rtems_task_wake_after(1); + ++i; + } + + LPC_ETH_PRINTK("tx: lpc_eth_mdio_wait %s after %d\n", + i != one_second? "succeed": "timeout", i); + + return i != one_second ? 0 : ETIMEDOUT; } -static void -lpe_start_locked(struct ifnet *ifp) +static uint32_t lpc_eth_mdio_read_anlpar(int phy) { - struct lpe_softc *sc = (struct lpe_softc *)ifp->if_softc; - struct mbuf *m_head; - int encap = 0; + uint32_t madr = ETH_MADR_REG(MII_ANLPAR) | ETH_MADR_PHY(phy); + uint32_t anlpar = 0; + int eno = 0; - lpe_lock_assert(sc); + if (lpc_eth->madr != madr) { + lpc_eth->madr = madr; + } - while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { - if (lpe_read_4(sc, LPE_TXDESC_PROD) == - lpe_read_4(sc, LPE_TXDESC_CONS) - 5) - break; + if (lpc_eth->mcmd != ETH_MCMD_READ) { + lpc_eth->mcmd = 0; + lpc_eth->mcmd = ETH_MCMD_READ; + } - /* Dequeue first packet */ - IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); - if (!m_head) - break; + eno = lpc_eth_mdio_wait_for_not_busy(); + if (eno == 0) { + anlpar = lpc_eth->mrdd; + } - lpe_encap(sc, &m_head); + /* Start next read */ + lpc_eth->mcmd = 0; + lpc_eth->mcmd = ETH_MCMD_READ; - encap++; - } - - /* Submit new descriptor list */ - if (encap) { - lpe_write_4(sc, LPE_TXDESC_PROD, sc->lpe_cdata.lpe_tx_prod); - sc->lpe_watchdog_timer = 5; - } - + return anlpar; } -#ifdef __rtems__ -static int -lpe_get_segs_for_tx(struct mbuf *m, bus_dma_segment_t segs[LPE_MAXFRAGS], - int *nsegs) +static int lpc_eth_mdio_read( + int phy, + void *arg RTEMS_UNUSED, + unsigned reg, + uint32_t *val +) { - int i = 0; - - do { - if (m->m_len > 0) { - segs[i].ds_addr = mtod(m, bus_addr_t); - segs[i].ds_len = m->m_len; -#ifdef CPU_DATA_CACHE_ALIGNMENT - rtems_cache_flush_multiple_data_lines(m->m_data, m->m_len); -#endif - ++i; - } - m = m->m_next; - if (m == NULL) { - *nsegs = i; - return (0); - } - } while (i < LPE_MAXFRAGS); - return (EFBIG); + int eno = 0; + + if (0 <= phy && phy <= 31) { + lpc_eth->madr = ETH_MADR_REG(reg) | ETH_MADR_PHY(phy); + lpc_eth->mcmd = 0; + lpc_eth->mcmd = ETH_MCMD_READ; + eno = lpc_eth_mdio_wait_for_not_busy(); + + if (eno == 0) { + *val = lpc_eth->mrdd; + } + } else { + eno = EINVAL; + } + + return eno; } -#endif /* __rtems__ */ -static int -lpe_encap(struct lpe_softc *sc, struct mbuf **m_head) -{ - struct lpe_txdesc *txd; - struct lpe_hwdesc *hwd; - bus_dma_segment_t segs[LPE_MAXFRAGS]; - int i, err, nsegs, prod; - - lpe_lock_assert(sc); - M_ASSERTPKTHDR((*m_head)); - - prod = sc->lpe_cdata.lpe_tx_prod; - txd = &sc->lpe_cdata.lpe_tx_desc[prod]; - - debugf("starting with prod=%d\n", prod); - -#ifndef __rtems__ - err = bus_dmamap_load_mbuf_sg(sc->lpe_cdata.lpe_tx_buf_tag, - txd->lpe_txdesc_dmamap, *m_head, segs, &nsegs, BUS_DMA_NOWAIT); -#else /* __rtems__ */ - err = lpe_get_segs_for_tx(*m_head, segs, &nsegs); -#endif /* __rtems__ */ - - if (err) - return (err); - - if (nsegs == 0) { - m_freem(*m_head); - *m_head = NULL; - return (EIO); - } - -#ifndef __rtems__ - bus_dmamap_sync(sc->lpe_cdata.lpe_tx_buf_tag, txd->lpe_txdesc_dmamap, - BUS_DMASYNC_PREREAD); -#endif /* __rtems__ */ - bus_dmamap_sync(sc->lpe_cdata.lpe_tx_ring_tag, sc->lpe_cdata.lpe_tx_ring_map, - BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); - - txd->lpe_txdesc_first = 1; - txd->lpe_txdesc_mbuf = *m_head; - - for (i = 0; i < nsegs; i++) { - hwd = &sc->lpe_rdata.lpe_tx_ring[prod]; - hwd->lhr_data = segs[i].ds_addr; - hwd->lhr_control = segs[i].ds_len - 1; - - if (i == nsegs - 1) { - hwd->lhr_control |= LPE_HWDESC_LASTFLAG; - hwd->lhr_control |= LPE_HWDESC_INTERRUPT; - hwd->lhr_control |= LPE_HWDESC_CRC; - hwd->lhr_control |= LPE_HWDESC_PAD; - } - -#ifdef __rtems__ -#ifdef CPU_DATA_CACHE_ALIGNMENT - rtems_cache_flush_multiple_data_lines(hwd, sizeof(*hwd)); -#endif -#endif /* __rtems__ */ - LPE_INC(prod, LPE_TXDESC_NUM); - } - bus_dmamap_sync(sc->lpe_cdata.lpe_tx_ring_tag, sc->lpe_cdata.lpe_tx_ring_map, - BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); +static int lpc_eth_mdio_write( + int phy, + void *arg RTEMS_UNUSED, + unsigned reg, + uint32_t val +) +{ + int eno = 0; - sc->lpe_cdata.lpe_tx_used += nsegs; - sc->lpe_cdata.lpe_tx_prod = prod; + if (0 <= phy && phy <= 31) { + lpc_eth->madr = ETH_MADR_REG(reg) | ETH_MADR_PHY(phy); + lpc_eth->mwtd = val; + eno = lpc_eth_mdio_wait_for_not_busy(); + } else { + eno = EINVAL; + } - return (0); + return eno; } -static void -lpe_stop(struct lpe_softc *sc) +static int lpc_eth_phy_get_id(int phy, uint32_t *id) { - lpe_lock(sc); - lpe_stop_locked(sc); - lpe_unlock(sc); -} + uint32_t id1 = 0; + int eno = lpc_eth_mdio_read(phy, NULL, MII_PHYIDR1, &id1); -static void -lpe_stop_locked(struct lpe_softc *sc) -{ - lpe_lock_assert(sc); + if (eno == 0) { + uint32_t id2 = 0; - callout_stop(&sc->lpe_tick); + eno = lpc_eth_mdio_read(phy, NULL, MII_PHYIDR2, &id2); + if (eno == 0) { + *id = (id1 << 16) | (id2 & 0xfff0); + } + } - /* Disable interrupts */ - lpe_write_4(sc, LPE_INTCLEAR, 0xffffffff); + return eno; +} - /* Stop EMAC */ - lpe_write_4(sc, LPE_MAC1, 0); - lpe_write_4(sc, LPE_MAC2, 0); - lpe_write_4(sc, LPE_COMMAND, 0); +#define PHY_KSZ80X1RNL 0x221550 +#define PHY_DP83848 0x20005c90 - sc->lpe_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; - sc->lpe_ifp->if_drv_flags &= ~IFF_DRV_RUNNING; -} +typedef struct { + unsigned reg; + uint32_t set; + uint32_t clear; +} lpc_eth_phy_action; -static int -lpe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) +static int lpc_eth_phy_set_and_clear( + lpc_eth_driver_entry *e, + const lpc_eth_phy_action *actions, + size_t n +) { - struct lpe_softc *sc = ifp->if_softc; - struct mii_data *mii = device_get_softc(sc->lpe_miibus); - struct ifreq *ifr = (struct ifreq *)data; - int err = 0; - - switch (cmd) { - case SIOCSIFFLAGS: - lpe_lock(sc); - if (ifp->if_flags & IFF_UP) { - if (ifp->if_drv_flags & IFF_DRV_RUNNING) { - lpe_set_rxmode(sc); - lpe_set_rxfilter(sc); - } else - lpe_init_locked(sc); - } else - lpe_stop(sc); - lpe_unlock(sc); - break; - case SIOCADDMULTI: - case SIOCDELMULTI: - if (ifp->if_drv_flags & IFF_DRV_RUNNING) { - lpe_lock(sc); - lpe_set_rxfilter(sc); - lpe_unlock(sc); - } - break; - case SIOCGIFMEDIA: - case SIOCSIFMEDIA: - err = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); - break; - default: - err = ether_ioctl(ifp, cmd, data); - break; - } - - return (err); + int eno = 0; + size_t i; + + for (i = 0; eno == 0 && i < n; ++i) { + const lpc_eth_phy_action *action = &actions [i]; + uint32_t val; + + eno = lpc_eth_mdio_read(e->phy, NULL, action->reg, &val); + if (eno == 0) { + val |= action->set; + val &= ~action->clear; + eno = lpc_eth_mdio_write(e->phy, NULL, action->reg, val); + } + } + + return eno; } -static void lpe_set_rxmode(struct lpe_softc *sc) -{ - struct ifnet *ifp = sc->lpe_ifp; - uint32_t rxfilt; +static const lpc_eth_phy_action lpc_eth_phy_up_action_default [] = { + { MII_BMCR, 0, BMCR_PDOWN }, + { MII_BMCR, BMCR_RESET, 0 }, + { MII_BMCR, BMCR_AUTOEN, 0 } +}; - rxfilt = LPE_RXFILTER_UNIHASH | LPE_RXFILTER_MULTIHASH | LPE_RXFILTER_PERFECT; +static const lpc_eth_phy_action lpc_eth_phy_up_pre_action_KSZ80X1RNL [] = { + /* Disable slow oscillator mode */ + { 0x11, 0, 0x10 } +}; - if (ifp->if_flags & IFF_BROADCAST) - rxfilt |= LPE_RXFILTER_BROADCAST; +static const lpc_eth_phy_action lpc_eth_phy_up_post_action_KSZ80X1RNL [] = { + /* Enable energy detect power down (EDPD) mode */ + { 0x18, 0x0800, 0 }, + /* Turn PLL of automatically in EDPD mode */ + { 0x10, 0x10, 0 } +}; - if (ifp->if_flags & IFF_PROMISC) - rxfilt |= LPE_RXFILTER_UNICAST | LPE_RXFILTER_MULTICAST; +static int lpc_eth_phy_up(lpc_eth_driver_entry *e) +{ + int eno; + int retries = 64; + uint32_t val; + + e->phy = DEFAULT_PHY - 1; + while (true) { + e->phy = (e->phy + 1) % 32; + + --retries; + eno = lpc_eth_phy_get_id(e->phy, &e->phy_id); + if ( + (eno == 0 && e->phy_id != 0xfffffff0 && e->phy_id != 0) + || retries <= 0 + ) { + break; + } + + rtems_task_wake_after(1); + } + + LPC_ETH_PRINTF("lpc_eth_phy_get_id: 0x%08" PRIx32 " from phy %d retries %d\n", + e->phy_id, e->phy, retries); + + if (eno == 0) { + switch (e->phy_id) { + case PHY_KSZ80X1RNL: + eno = lpc_eth_phy_set_and_clear( + e, + &lpc_eth_phy_up_pre_action_KSZ80X1RNL [0], + RTEMS_ARRAY_SIZE(lpc_eth_phy_up_pre_action_KSZ80X1RNL) + ); + break; + case PHY_DP83848: + eno = lpc_eth_mdio_read(e->phy, NULL, 0x17, &val); + LPC_ETH_PRINTF("phy PHY_DP83848 RBR 0x%08" PRIx32 "\n", val); + /* val = 0x21; */ + val = 0x32 ; + eno = lpc_eth_mdio_write(e->phy, NULL, 0x17, val); + break; + case 0: + case 0xfffffff0: + eno = EIO; + e->phy = DEFAULT_PHY; + break; + default: + break; + } + + if (eno == 0) { + eno = lpc_eth_phy_set_and_clear( + e, + &lpc_eth_phy_up_action_default [0], + RTEMS_ARRAY_SIZE(lpc_eth_phy_up_action_default) + ); + } + + if (eno == 0) { + switch (e->phy_id) { + case PHY_KSZ80X1RNL: + eno = lpc_eth_phy_set_and_clear( + e, + &lpc_eth_phy_up_post_action_KSZ80X1RNL [0], + RTEMS_ARRAY_SIZE(lpc_eth_phy_up_post_action_KSZ80X1RNL) + ); + break; + default: + break; + } + } + } else { + e->phy_id = 0; + } + + return eno; +} - if (ifp->if_flags & IFF_ALLMULTI) - rxfilt |= LPE_RXFILTER_MULTICAST; +static const lpc_eth_phy_action lpc_eth_phy_down_action_default [] = { + { MII_BMCR, BMCR_PDOWN, 0 } +}; - lpe_write_4(sc, LPE_RXFILTER_CTRL, rxfilt); -} +static const lpc_eth_phy_action lpc_eth_phy_down_post_action_KSZ80X1RNL [] = { + /* Enable slow oscillator mode */ + { 0x11, 0x10, 0 } +}; -static void lpe_set_rxfilter(struct lpe_softc *sc) +static void lpc_eth_phy_down(lpc_eth_driver_entry *e) { - struct ifnet *ifp = sc->lpe_ifp; - struct ifmultiaddr *ifma; - int index; - uint32_t hashl, hashh; - - hashl = 0; - hashh = 0; - - if_maddr_rlock(ifp); - CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { - if (ifma->ifma_addr->sa_family != AF_LINK) - continue; - - index = ether_crc32_be(LLADDR((struct sockaddr_dl *) - ifma->ifma_addr), ETHER_ADDR_LEN) >> 23 & 0x3f; - - if (index > 31) - hashh |= (1 << (index - 32)); - else - hashl |= (1 << index); - } - if_maddr_runlock(ifp); - - /* Program new hash filter */ - lpe_write_4(sc, LPE_HASHFILTER_L, hashl); - lpe_write_4(sc, LPE_HASHFILTER_H, hashh); + int eno = lpc_eth_phy_set_and_clear( + e, + &lpc_eth_phy_down_action_default [0], + RTEMS_ARRAY_SIZE(lpc_eth_phy_down_action_default) + ); + + if (eno == 0) { + switch (e->phy_id) { + case PHY_KSZ80X1RNL: + eno = lpc_eth_phy_set_and_clear( + e, + &lpc_eth_phy_down_post_action_KSZ80X1RNL [0], + RTEMS_ARRAY_SIZE(lpc_eth_phy_down_post_action_KSZ80X1RNL) + ); + break; + default: + break; + } + } } -static void -lpe_intr(void *arg) +static void lpc_eth_soft_reset(void) { - struct lpe_softc *sc = (struct lpe_softc *)arg; - uint32_t intstatus; - - debugf("status=0x%08x\n", lpe_read_4(sc, LPE_INTSTATUS)); - - lpe_lock(sc); - - while ((intstatus = lpe_read_4(sc, LPE_INTSTATUS))) { - if (intstatus & LPE_INT_RXDONE) - lpe_rxintr(sc); - -#ifndef __rtems__ - if (intstatus & LPE_INT_TXDONE) - lpe_txintr(sc); - -#else /* __rtems__ */ - if (intstatus & LPE_INT_TXUNDERRUN) { - if_inc_counter(sc->lpe_ifp, IFCOUNTER_OERRORS, 1); - lpe_stop_locked(sc); - lpe_init_locked(sc); - } - else if (intstatus & (LPE_INT_TXERROR | LPE_INT_TXFINISH | LPE_INT_TXDONE)) - lpe_txintr(sc); -#endif /* __rtems__ */ - lpe_write_4(sc, LPE_INTCLEAR, 0xffff); - } - - lpe_unlock(sc); + lpc_eth->command = 0x38; + lpc_eth->mac1 = 0xcf00; + lpc_eth->mac1 = 0x0; } -static void -lpe_rxintr(struct lpe_softc *sc) +static int lpc_eth_up_or_down(lpc_eth_driver_entry *e, bool up) { - struct ifnet *ifp = sc->lpe_ifp; - struct lpe_hwdesc *hwd; - struct lpe_hwstatus *hws; - struct lpe_rxdesc *rxd; - struct mbuf *m; - int prod, cons; - - for (;;) { - prod = lpe_read_4(sc, LPE_RXDESC_PROD); - cons = lpe_read_4(sc, LPE_RXDESC_CONS); - - if (prod == cons) - break; - - rxd = &sc->lpe_cdata.lpe_rx_desc[cons]; - hwd = &sc->lpe_rdata.lpe_rx_ring[cons]; - hws = &sc->lpe_rdata.lpe_rx_status[cons]; -#ifdef __rtems__ -#ifdef CPU_DATA_CACHE_ALIGNMENT - rtems_cache_invalidate_multiple_data_lines(rxd, sizeof(*rxd)); - rtems_cache_invalidate_multiple_data_lines(hwd, sizeof(*hwd)); - rtems_cache_invalidate_multiple_data_lines(hws, sizeof(*hws)); -#endif -#endif /* __rtems__ */ - - /* Check received frame for errors */ - if (hws->lhs_info & LPE_HWDESC_RXERRS) { - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - lpe_discard_rxbuf(sc, cons); - lpe_init_rxbuf(sc, cons); - goto skip; - } - - m = rxd->lpe_rxdesc_mbuf; -#ifdef __rtems__ -#ifdef CPU_DATA_CACHE_ALIGNMENT - rtems_cache_invalidate_multiple_data_lines(m->m_data, m->m_len); -#endif -#endif /* __rtems__ */ - m->m_pkthdr.rcvif = ifp; - m->m_data += 2; - - if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); - - lpe_unlock(sc); - (*ifp->if_input)(ifp, m); - lpe_lock(sc); - - lpe_init_rxbuf(sc, cons); -skip: - LPE_INC(cons, LPE_RXDESC_NUM); - lpe_write_4(sc, LPE_RXDESC_CONS, cons); - } + int eno = 0; + rtems_status_code sc = RTEMS_SUCCESSFUL; + struct ifnet *ifp = e->ifp; + + if (up && e->state == LPC_ETH_STATE_DOWN) { + lpc_eth_config_module_enable(); + + /* Enable RX/TX reset and disable soft reset */ + lpc_eth->mac1 = 0xf00; + + /* Initialize PHY */ + /* Clock value 10 (divide by 44 ) is safe on LPC178x up to 100 MHz AHB clock */ + lpc_eth->mcfg = ETH_MCFG_CLOCK_SELECT(10) | ETH_MCFG_RESETMIIMGMT; + rtems_task_wake_after(1); + lpc_eth->mcfg = ETH_MCFG_CLOCK_SELECT(10); + rtems_task_wake_after(1); + eno = lpc_eth_phy_up(e); + + if (eno == 0) { + const uint8_t *eaddr; + + /* + * We must have a valid external clock from the PHY at this point, + * otherwise the system bus hangs and only a watchdog reset helps. + */ + lpc_eth_soft_reset(); + + /* Reinitialize registers */ + lpc_eth->mac2 = 0x31; + lpc_eth->ipgt = 0x15; + lpc_eth->ipgr = 0x12; + lpc_eth->clrt = 0x370f; + lpc_eth->maxf = 0x0600; + lpc_eth->supp = ETH_SUPP_SPEED; + lpc_eth->test = 0; + #ifdef LPC_ETH_CONFIG_RMII + lpc_eth->command = 0x0600; + #else + lpc_eth->command = 0x0400; + #endif + lpc_eth->intenable = ETH_INT_RX_OVERRUN | ETH_INT_TX_UNDERRUN; + lpc_eth->intclear = 0x30ff; + lpc_eth->powerdown = 0; + + /* MAC address */ + eaddr = IF_LLADDR(e->ifp); + lpc_eth->sa0 = ((uint32_t) eaddr [5] << 8) | (uint32_t) eaddr [4]; + lpc_eth->sa1 = ((uint32_t) eaddr [3] << 8) | (uint32_t) eaddr [2]; + lpc_eth->sa2 = ((uint32_t) eaddr [1] << 8) | (uint32_t) eaddr [0]; + + lpc_eth_setup_rxfilter(e); + + /* Enable receiver */ + lpc_eth->mac1 = 0x03; + + /* Initialize tasks */ + lpc_eth_control_request(e, e->receive_task, LPC_ETH_EVENT_INIT_RX); + lpc_eth_initialize_transmit(e); + + /* Install interrupt handler */ + sc = rtems_interrupt_handler_install( + e->interrupt_number, + "Ethernet", + RTEMS_INTERRUPT_UNIQUE, + lpc_eth_interrupt_handler, + e + ); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); + + /* Start watchdog timer */ + callout_reset(&e->watchdog_callout, hz, lpc_eth_interface_watchdog, e); + + /* Change state */ + ifp->if_drv_flags |= IFF_DRV_RUNNING; + e->state = LPC_ETH_STATE_UP; + } + } else if (!up && e->state == LPC_ETH_STATE_UP) { + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; + + /* Remove interrupt handler */ + sc = rtems_interrupt_handler_remove( + e->interrupt_number, + lpc_eth_interrupt_handler, + e + ); + BSD_ASSERT(sc == RTEMS_SUCCESSFUL); + + /* Stop task */ + lpc_eth_control_request(e, e->receive_task, LPC_ETH_EVENT_STOP); + + lpc_eth_soft_reset(); + lpc_eth_phy_down(e); + lpc_eth_config_module_disable(); + + /* Stop watchdog timer */ + callout_stop(&e->watchdog_callout); + + /* Change state */ + e->state = LPC_ETH_STATE_DOWN; + } + + return eno; } -static void -lpe_txintr(struct lpe_softc *sc) +static void lpc_eth_interface_init(void *arg) { - struct ifnet *ifp = sc->lpe_ifp; - struct lpe_hwdesc *hwd; - struct lpe_hwstatus *hws; - struct lpe_txdesc *txd; - int cons, last; - - for (;;) { - cons = lpe_read_4(sc, LPE_TXDESC_CONS); - last = sc->lpe_cdata.lpe_tx_last; - - if (cons == last) - break; - - txd = &sc->lpe_cdata.lpe_tx_desc[last]; - hwd = &sc->lpe_rdata.lpe_tx_ring[last]; - hws = &sc->lpe_rdata.lpe_tx_status[last]; - -#ifndef __rtems__ - bus_dmamap_sync(sc->lpe_cdata.lpe_tx_buf_tag, - txd->lpe_txdesc_dmamap, BUS_DMASYNC_POSTWRITE); -#else /* __rtems__ */ -#ifdef CPU_DATA_CACHE_ALIGNMENT - rtems_cache_invalidate_multiple_data_lines(txd, sizeof(*txd)); - rtems_cache_invalidate_multiple_data_lines(hwd, sizeof(*hwd)); - rtems_cache_invalidate_multiple_data_lines(hws, sizeof(*hws)); -#endif -#endif /* __rtems__ */ - - if_inc_counter(ifp, IFCOUNTER_COLLISIONS, LPE_HWDESC_COLLISIONS(hws->lhs_info)); + lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) arg; - if (hws->lhs_info & LPE_HWDESC_TXERRS) - if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); - else - if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); - - if (txd->lpe_txdesc_first) { -#ifndef __rtems__ - bus_dmamap_unload(sc->lpe_cdata.lpe_tx_buf_tag, - txd->lpe_txdesc_dmamap); -#endif /* __rtems__ */ - - m_freem(txd->lpe_txdesc_mbuf); - txd->lpe_txdesc_mbuf = NULL; - txd->lpe_txdesc_first = 0; - } + (void) lpc_eth_up_or_down(e, true); +} - sc->lpe_cdata.lpe_tx_used--; - LPE_INC(sc->lpe_cdata.lpe_tx_last, LPE_TXDESC_NUM); - } +static void lpc_eth_setup_rxfilter(lpc_eth_driver_entry *e) +{ + struct ifnet *ifp = e->ifp; + + lpc_eth_enable_promiscous_mode((ifp->if_flags & IFF_PROMISC) != 0); + + if ((ifp->if_flags & IFF_ALLMULTI)) { + lpc_eth->hashfilterl = 0xffffffff; + lpc_eth->hashfilterh = 0xffffffff; + } else { + struct ifmultiaddr *ifma; + + lpc_eth->hashfilterl = 0x0; + lpc_eth->hashfilterh = 0x0; + + if_maddr_rlock(ifp); + CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { + uint32_t crc; + uint32_t index; + + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + + /* XXX: ether_crc32_le() does not work, why? */ + crc = ether_crc32_be( + LLADDR((struct sockaddr_dl *) ifma->ifma_addr), + ETHER_ADDR_LEN + ); + index = (crc >> 23) & 0x3f; + + if (index < 32) { + lpc_eth->hashfilterl |= 1U << index; + } else { + lpc_eth->hashfilterh |= 1U << (index - 32); + } + } + if_maddr_runlock(ifp); + } +} - if (!sc->lpe_cdata.lpe_tx_used) - sc->lpe_watchdog_timer = 0; +static int lpc_eth_interface_ioctl( + struct ifnet *ifp, + ioctl_command_t cmd, + caddr_t data +) +{ + lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) ifp->if_softc; + struct ifreq *ifr = (struct ifreq *) data; + int eno = 0; + + LPC_ETH_PRINTF("%s\n", __func__); + + switch (cmd) { + case SIOCGIFMEDIA: + case SIOCSIFMEDIA: + eno = ifmedia_ioctl(ifp, ifr, &e->ifmedia, cmd); + break; + case SIOCGIFADDR: + case SIOCSIFADDR: + ether_ioctl(ifp, cmd, data); + break; + case SIOCSIFFLAGS: + LPE_LOCK(e); + if (ifp->if_flags & IFF_UP) { + if (ifp->if_drv_flags & IFF_DRV_RUNNING) { + if ((ifp->if_flags ^ e->if_flags) & (IFF_PROMISC | IFF_ALLMULTI)) { + lpc_eth_setup_rxfilter(e); + } + } else { + eno = lpc_eth_up_or_down(e, true); + } + } else { + if (ifp->if_drv_flags & IFF_DRV_RUNNING) { + eno = lpc_eth_up_or_down(e, false); + } + } + e->if_flags = ifp->if_flags; + LPE_UNLOCK(e); + break; + case SIOCADDMULTI: + case SIOCDELMULTI: + if (ifp->if_drv_flags & IFF_DRV_RUNNING) { + LPE_LOCK(e); + lpc_eth_setup_rxfilter(e); + LPE_UNLOCK(e); + } + break; + default: + eno = ether_ioctl(ifp, cmd, data); + break; + } + + return eno; } -static void -lpe_tick(void *arg) +static int lpc_eth_interface_transmit(struct ifnet *ifp, struct mbuf *m) { - struct lpe_softc *sc = (struct lpe_softc *)arg; - struct mii_data *mii = device_get_softc(sc->lpe_miibus); + lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) ifp->if_softc; + int eno; - lpe_lock_assert(sc); - - mii_tick(mii); - lpe_watchdog(sc); + LPE_LOCK(e); - callout_reset(&sc->lpe_tick, hz, lpe_tick, sc); -} + if (e->state == LPC_ETH_STATE_UP) { + eno = lpc_eth_tx_enqueue(e, ifp, m); + lpc_eth_tx_reclaim(e, ifp); -static void -lpe_watchdog(struct lpe_softc *sc) -{ - struct ifnet *ifp = sc->lpe_ifp; + if (__predict_false(eno != 0)) { + struct mbuf *n; - lpe_lock_assert(sc); + n = m_defrag(m, M_NOWAIT); + if (n != NULL) { + m = n; + } - if (sc->lpe_watchdog_timer == 0 || sc->lpe_watchdog_timer--) - return; + eno = lpc_eth_tx_enqueue(e, ifp, m); + } + } else { + eno = ENETDOWN; + } - /* Chip has stopped responding */ - device_printf(sc->lpe_dev, "WARNING: chip hangup, restarting...\n"); - lpe_stop_locked(sc); - lpe_init_locked(sc); + if (eno != 0) { + m_freem(m); + if_inc_counter(ifp, IFCOUNTER_OQDROPS, 1); + } - /* Try to resend packets */ - if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) - lpe_start_locked(ifp); + LPE_UNLOCK(e); + return eno; } -static int -lpe_dma_alloc(struct lpe_softc *sc) +static void lpc_eth_interface_watchdog(void *arg) { - int err; - - /* Create parent DMA tag */ - err = bus_dma_tag_create( - bus_get_dma_tag(sc->lpe_dev), - 1, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ - BUS_SPACE_MAXADDR, /* highaddr */ - NULL, NULL, /* filter, filterarg */ - BUS_SPACE_MAXSIZE_32BIT, 0, /* maxsize, nsegments */ - BUS_SPACE_MAXSIZE_32BIT, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockarg */ - &sc->lpe_cdata.lpe_parent_tag); - - if (err) { - device_printf(sc->lpe_dev, "cannot create parent DMA tag\n"); - return (err); - } - - err = lpe_dma_alloc_rx(sc); - if (err) - return (err); - - err = lpe_dma_alloc_tx(sc); - if (err) - return (err); - - return (0); + lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) arg; + + if (e->state == LPC_ETH_STATE_UP) { + uint32_t anlpar = lpc_eth_mdio_read_anlpar(e->phy); + + if (e->anlpar != anlpar) { + bool full_duplex = false; + bool speed = false; + + e->anlpar = anlpar; + + if ((anlpar & ANLPAR_TX_FD) != 0) { + full_duplex = true; + speed = true; + } else if ((anlpar & ANLPAR_T4) != 0) { + speed = true; + } else if ((anlpar & ANLPAR_TX) != 0) { + speed = true; + } else if ((anlpar & ANLPAR_10_FD) != 0) { + full_duplex = true; + } + + if (full_duplex) { + lpc_eth->mac2 |= ETH_MAC2_FULL_DUPLEX; + } else { + lpc_eth->mac2 &= ~ETH_MAC2_FULL_DUPLEX; + } + + if (speed) { + lpc_eth->supp |= ETH_SUPP_SPEED; + } else { + lpc_eth->supp &= ~ETH_SUPP_SPEED; + } + } + + callout_reset(&e->watchdog_callout, WATCHDOG_TIMEOUT * hz, lpc_eth_interface_watchdog, e); + } } -static int -lpe_dma_alloc_rx(struct lpe_softc *sc) +static int lpc_eth_media_change(struct ifnet *ifp) { - struct lpe_rxdesc *rxd; - struct lpe_dmamap_arg ctx; - int err, i; - - /* Create tag for Rx ring */ - err = bus_dma_tag_create( - sc->lpe_cdata.lpe_parent_tag, - LPE_DESC_ALIGN, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR, /* lowaddr */ - BUS_SPACE_MAXADDR, /* highaddr */ - NULL, NULL, /* filter, filterarg */ - LPE_RXDESC_SIZE, 1, /* maxsize, nsegments */ - LPE_RXDESC_SIZE, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockarg */ - &sc->lpe_cdata.lpe_rx_ring_tag); - - if (err) { - device_printf(sc->lpe_dev, "cannot create Rx ring DMA tag\n"); - goto fail; - } - - /* Create tag for Rx status ring */ - err = bus_dma_tag_create( - sc->lpe_cdata.lpe_parent_tag, - LPE_DESC_ALIGN, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR, /* lowaddr */ - BUS_SPACE_MAXADDR, /* highaddr */ - NULL, NULL, /* filter, filterarg */ - LPE_RXSTATUS_SIZE, 1, /* maxsize, nsegments */ - LPE_RXSTATUS_SIZE, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockarg */ - &sc->lpe_cdata.lpe_rx_status_tag); - - if (err) { - device_printf(sc->lpe_dev, "cannot create Rx status ring DMA tag\n"); - goto fail; - } - - /* Create tag for Rx buffers */ - err = bus_dma_tag_create( - sc->lpe_cdata.lpe_parent_tag, - LPE_DESC_ALIGN, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR, /* lowaddr */ - BUS_SPACE_MAXADDR, /* highaddr */ - NULL, NULL, /* filter, filterarg */ - MCLBYTES * LPE_RXDESC_NUM, /* maxsize */ - LPE_RXDESC_NUM, /* segments */ - MCLBYTES, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockarg */ - &sc->lpe_cdata.lpe_rx_buf_tag); - - if (err) { - device_printf(sc->lpe_dev, "cannot create Rx buffers DMA tag\n"); - goto fail; - } - - /* Allocate Rx DMA ring */ - err = bus_dmamem_alloc(sc->lpe_cdata.lpe_rx_ring_tag, - (void **)&sc->lpe_rdata.lpe_rx_ring, BUS_DMA_WAITOK | BUS_DMA_COHERENT | - BUS_DMA_ZERO, &sc->lpe_cdata.lpe_rx_ring_map); - - err = bus_dmamap_load(sc->lpe_cdata.lpe_rx_ring_tag, - sc->lpe_cdata.lpe_rx_ring_map, sc->lpe_rdata.lpe_rx_ring, - LPE_RXDESC_SIZE, lpe_dmamap_cb, &ctx, 0); - - sc->lpe_rdata.lpe_rx_ring_phys = ctx.lpe_dma_busaddr; - - /* Allocate Rx status ring */ - err = bus_dmamem_alloc(sc->lpe_cdata.lpe_rx_status_tag, - (void **)&sc->lpe_rdata.lpe_rx_status, BUS_DMA_WAITOK | BUS_DMA_COHERENT | - BUS_DMA_ZERO, &sc->lpe_cdata.lpe_rx_status_map); - - err = bus_dmamap_load(sc->lpe_cdata.lpe_rx_status_tag, - sc->lpe_cdata.lpe_rx_status_map, sc->lpe_rdata.lpe_rx_status, - LPE_RXDESC_SIZE, lpe_dmamap_cb, &ctx, 0); - - sc->lpe_rdata.lpe_rx_status_phys = ctx.lpe_dma_busaddr; - - - /* Create Rx buffers DMA map */ - for (i = 0; i < LPE_RXDESC_NUM; i++) { - rxd = &sc->lpe_cdata.lpe_rx_desc[i]; - rxd->lpe_rxdesc_mbuf = NULL; -#ifndef __rtems__ - rxd->lpe_rxdesc_dmamap = NULL; - - err = bus_dmamap_create(sc->lpe_cdata.lpe_rx_buf_tag, 0, - &rxd->lpe_rxdesc_dmamap); - - if (err) { - device_printf(sc->lpe_dev, "cannot create Rx DMA map\n"); - return (err); - } -#endif /* __rtems__ */ - } - - return (0); -fail: - return (err); + (void) ifp; + return EINVAL; } -static int -lpe_dma_alloc_tx(struct lpe_softc *sc) +static void lpc_eth_media_status(struct ifnet *ifp, struct ifmediareq *imr) { - struct lpe_txdesc *txd; - struct lpe_dmamap_arg ctx; - int err, i; - - /* Create tag for Tx ring */ - err = bus_dma_tag_create( - sc->lpe_cdata.lpe_parent_tag, - LPE_DESC_ALIGN, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR, /* lowaddr */ - BUS_SPACE_MAXADDR, /* highaddr */ - NULL, NULL, /* filter, filterarg */ - LPE_TXDESC_SIZE, 1, /* maxsize, nsegments */ - LPE_TXDESC_SIZE, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockarg */ - &sc->lpe_cdata.lpe_tx_ring_tag); - - if (err) { - device_printf(sc->lpe_dev, "cannot create Tx ring DMA tag\n"); - goto fail; - } - - /* Create tag for Tx status ring */ - err = bus_dma_tag_create( - sc->lpe_cdata.lpe_parent_tag, - LPE_DESC_ALIGN, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR, /* lowaddr */ - BUS_SPACE_MAXADDR, /* highaddr */ - NULL, NULL, /* filter, filterarg */ - LPE_TXSTATUS_SIZE, 1, /* maxsize, nsegments */ - LPE_TXSTATUS_SIZE, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockarg */ - &sc->lpe_cdata.lpe_tx_status_tag); - - if (err) { - device_printf(sc->lpe_dev, "cannot create Tx status ring DMA tag\n"); - goto fail; - } - - /* Create tag for Tx buffers */ - err = bus_dma_tag_create( - sc->lpe_cdata.lpe_parent_tag, - LPE_DESC_ALIGN, 0, /* alignment, boundary */ - BUS_SPACE_MAXADDR, /* lowaddr */ - BUS_SPACE_MAXADDR, /* highaddr */ - NULL, NULL, /* filter, filterarg */ - MCLBYTES * LPE_TXDESC_NUM, /* maxsize */ - LPE_TXDESC_NUM, /* segments */ - MCLBYTES, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockarg */ - &sc->lpe_cdata.lpe_tx_buf_tag); - - if (err) { - device_printf(sc->lpe_dev, "cannot create Tx buffers DMA tag\n"); - goto fail; - } - - /* Allocate Tx DMA ring */ - err = bus_dmamem_alloc(sc->lpe_cdata.lpe_tx_ring_tag, - (void **)&sc->lpe_rdata.lpe_tx_ring, BUS_DMA_WAITOK | BUS_DMA_COHERENT | - BUS_DMA_ZERO, &sc->lpe_cdata.lpe_tx_ring_map); - - err = bus_dmamap_load(sc->lpe_cdata.lpe_tx_ring_tag, - sc->lpe_cdata.lpe_tx_ring_map, sc->lpe_rdata.lpe_tx_ring, - LPE_RXDESC_SIZE, lpe_dmamap_cb, &ctx, 0); - - sc->lpe_rdata.lpe_tx_ring_phys = ctx.lpe_dma_busaddr; - - /* Allocate Tx status ring */ - err = bus_dmamem_alloc(sc->lpe_cdata.lpe_tx_status_tag, - (void **)&sc->lpe_rdata.lpe_tx_status, BUS_DMA_WAITOK | BUS_DMA_COHERENT | - BUS_DMA_ZERO, &sc->lpe_cdata.lpe_tx_status_map); - - err = bus_dmamap_load(sc->lpe_cdata.lpe_tx_status_tag, - sc->lpe_cdata.lpe_tx_status_map, sc->lpe_rdata.lpe_tx_status, - LPE_RXDESC_SIZE, lpe_dmamap_cb, &ctx, 0); - - sc->lpe_rdata.lpe_tx_status_phys = ctx.lpe_dma_busaddr; - - - /* Create Tx buffers DMA map */ - for (i = 0; i < LPE_TXDESC_NUM; i++) { - txd = &sc->lpe_cdata.lpe_tx_desc[i]; - txd->lpe_txdesc_mbuf = NULL; -#ifndef __rtems__ - txd->lpe_txdesc_dmamap = NULL; -#endif /* __rtems__ */ - txd->lpe_txdesc_first = 0; - -#ifndef __rtems__ - err = bus_dmamap_create(sc->lpe_cdata.lpe_tx_buf_tag, 0, - &txd->lpe_txdesc_dmamap); -#endif /* __rtems__ */ - - if (err) { - device_printf(sc->lpe_dev, "cannot create Tx DMA map\n"); - return (err); - } - } - - return (0); -fail: - return (err); + (void) ifp; + + imr->ifm_status = IFM_AVALID | IFM_ACTIVE; + imr->ifm_active = IFM_ETHER; + + if ((lpc_eth->supp & ETH_SUPP_SPEED) != 0) { + imr->ifm_active |= IFM_100_TX; + } else { + imr->ifm_active |= IFM_10_T; + } + + if ((lpc_eth->mac2 & ETH_MAC2_FULL_DUPLEX) != 0) { + imr->ifm_active |= IFM_FDX; + } else { + imr->ifm_active |= IFM_HDX; + } } -static int -lpe_init_rx(struct lpe_softc *sc) +__weak_symbol int lpc_eth_probe(int unit) { - int i, err; + if (unit != 0) { + return ENXIO; + } - for (i = 0; i < LPE_RXDESC_NUM; i++) { - err = lpe_init_rxbuf(sc, i); - if (err) - return (err); - } - - return (0); + return BUS_PROBE_DEFAULT; } -static int -lpe_init_rxbuf(struct lpe_softc *sc, int n) +static int lpc_eth_do_probe(device_t dev) { - struct lpe_rxdesc *rxd; - struct lpe_hwdesc *hwd; -#ifndef __rtems__ - struct lpe_hwstatus *hws; -#endif /* __rtems__ */ - struct mbuf *m; - bus_dma_segment_t segs[1]; -#ifndef __rtems__ - int nsegs; -#endif /* __rtems__ */ - - rxd = &sc->lpe_cdata.lpe_rx_desc[n]; - hwd = &sc->lpe_rdata.lpe_rx_ring[n]; -#ifndef __rtems__ - hws = &sc->lpe_rdata.lpe_rx_status[n]; -#endif /* __rtems__ */ - m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); - - if (!m) { - device_printf(sc->lpe_dev, "WARNING: mbufs exhausted!\n"); - return (ENOBUFS); - } - - m->m_len = m->m_pkthdr.len = MCLBYTES; - -#ifndef __rtems__ - bus_dmamap_unload(sc->lpe_cdata.lpe_rx_buf_tag, rxd->lpe_rxdesc_dmamap); - - if (bus_dmamap_load_mbuf_sg(sc->lpe_cdata.lpe_rx_buf_tag, - rxd->lpe_rxdesc_dmamap, m, segs, &nsegs, 0)) { - m_freem(m); - return (ENOBUFS); - } - - bus_dmamap_sync(sc->lpe_cdata.lpe_rx_buf_tag, rxd->lpe_rxdesc_dmamap, - BUS_DMASYNC_PREREAD); -#else /* __rtems__ */ -#ifdef CPU_DATA_CACHE_ALIGNMENT - rtems_cache_invalidate_multiple_data_lines(m->m_data, m->m_len); -#endif - segs[0].ds_addr = mtod(m, bus_addr_t); -#endif /* __rtems__ */ - - rxd->lpe_rxdesc_mbuf = m; - hwd->lhr_data = segs[0].ds_addr + 2; - hwd->lhr_control = (segs[0].ds_len - 1) | LPE_HWDESC_INTERRUPT; -#ifdef __rtems__ -#ifdef CPU_DATA_CACHE_ALIGNMENT - rtems_cache_flush_multiple_data_lines(hwd, sizeof(*hwd)); -#endif -#endif /* __rtems__ */ - - return (0); + device_set_desc(dev, "LPC32x0 Ethernet controller"); + return lpc_eth_probe(device_get_unit(dev)); } -static void -lpe_discard_rxbuf(struct lpe_softc *sc, int n) +static int lpc_eth_attach(device_t dev) { - struct lpe_rxdesc *rxd; - struct lpe_hwdesc *hwd; - - rxd = &sc->lpe_cdata.lpe_rx_desc[n]; - hwd = &sc->lpe_rdata.lpe_rx_ring[n]; - -#ifndef __rtems__ - bus_dmamap_unload(sc->lpe_cdata.lpe_rx_buf_tag, rxd->lpe_rxdesc_dmamap); -#endif /* __rtems__ */ - - hwd->lhr_data = 0; - hwd->lhr_control = 0; - - if (rxd->lpe_rxdesc_mbuf) { - m_freem(rxd->lpe_rxdesc_mbuf); - rxd->lpe_rxdesc_mbuf = NULL; - } + lpc_eth_driver_entry *e = device_get_softc(dev); + struct ifnet *ifp = NULL; + char *unit_name = NULL; + int unit_index = device_get_unit(dev); + size_t table_area_size = 0; + char *table_area = NULL; + char *table_location = NULL; + rtems_status_code status; + uint8_t eaddr[ETHER_ADDR_LEN]; + + BSD_ASSERT(e->state == LPC_ETH_STATE_NOT_INITIALIZED); + + mtx_init(&e->mtx, device_get_nameunit(e->dev), MTX_NETWORK_LOCK, MTX_DEF); + + ifmedia_init(&e->ifmedia, 0, lpc_eth_media_change, lpc_eth_media_status); + ifmedia_add(&e->ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL); + ifmedia_set(&e->ifmedia, IFM_ETHER | IFM_AUTO); + + callout_init_mtx(&e->watchdog_callout, &e->mtx, 0); + + /* Receive unit count */ + e->rx_unit_count = LPC_ETH_CONFIG_RX_UNIT_COUNT_DEFAULT; + + /* Transmit unit count */ + e->tx_unit_count = LPC_ETH_CONFIG_TX_UNIT_COUNT_DEFAULT; + + /* Remember interrupt number */ + e->interrupt_number = LPC_ETH_CONFIG_INTERRUPT; + + /* Allocate and clear table area */ + table_area_size = + e->rx_unit_count + * (sizeof(lpc_eth_transfer_descriptor) + + sizeof(lpc_eth_receive_status) + + sizeof(struct mbuf *)) + + e->tx_unit_count + * (sizeof(lpc_eth_transfer_descriptor) + + sizeof(uint32_t) + + LPC_ETH_CONFIG_TX_BUF_SIZE); + table_area = lpc_eth_config_alloc_table_area(table_area_size); + if (table_area == NULL) { + return ENOMEM; + } + memset(table_area, 0, table_area_size); + + table_location = table_area; + + /* + * The receive status table must be the first one since it has the strictest + * alignment requirements. + */ + e->rx_status_table = (volatile lpc_eth_receive_status *) table_location; + table_location += e->rx_unit_count * sizeof(e->rx_status_table [0]); + + e->rx_desc_table = (volatile lpc_eth_transfer_descriptor *) table_location; + table_location += e->rx_unit_count * sizeof(e->rx_desc_table [0]); + + e->rx_mbuf_table = (struct mbuf **) table_location; + table_location += e->rx_unit_count * sizeof(e->rx_mbuf_table [0]); + + e->tx_desc_table = (volatile lpc_eth_transfer_descriptor *) table_location; + table_location += e->tx_unit_count * sizeof(e->tx_desc_table [0]); + + e->tx_status_table = (volatile uint32_t *) table_location; + table_location += e->tx_unit_count * sizeof(e->tx_status_table [0]); + + e->tx_buf_table = table_location; + + /* Set interface data */ + e->dev = dev; + e->ifp = ifp = if_alloc(IFT_ETHER); + ifp->if_softc = e; + if_initname(ifp, device_get_name(dev), device_get_unit(dev)); + ifp->if_init = lpc_eth_interface_init; + ifp->if_ioctl = lpc_eth_interface_ioctl; + ifp->if_transmit = lpc_eth_interface_transmit; + ifp->if_qflush = if_qflush; + ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX; + IFQ_SET_MAXLEN(&ifp->if_snd, LPC_ETH_CONFIG_TX_UNIT_COUNT_MAX - 1); + ifp->if_snd.ifq_drv_maxlen = LPC_ETH_CONFIG_TX_UNIT_COUNT_MAX - 1; + IFQ_SET_READY(&ifp->if_snd); + ifp->if_hdrlen = sizeof(struct ether_header); + + rtems_bsd_get_mac_address(device_get_name(e->dev), unit_index, eaddr); + + /* Create tasks */ + status = rtems_task_create( + rtems_build_name('n', 't', 'r', 'x'), + rtems_bsd_get_task_priority(device_get_name(e->dev)), + 4096, + RTEMS_DEFAULT_MODES, + RTEMS_DEFAULT_ATTRIBUTES, + &e->receive_task + ); + BSD_ASSERT(status == RTEMS_SUCCESSFUL); + status = rtems_task_start( + e->receive_task, + lpc_eth_receive_task, + (rtems_task_argument)e + ); + BSD_ASSERT(status == RTEMS_SUCCESSFUL); + + if_link_state_change(e->ifp, LINK_STATE_UP); + + /* Change status */ + e->state = LPC_ETH_STATE_DOWN; + + /* Attach the interface */ + ether_ifattach(ifp, eaddr); + + return 0; } -static void -lpe_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) +static int lpc_eth_detach(device_t dev) { - struct lpe_dmamap_arg *ctx; + /* FIXME: Detach the interface from the upper layers? */ - if (error) - return; + /* Module soft reset */ + lpc_eth->command = 0x38; + lpc_eth->mac1 = 0xcf00; - ctx = (struct lpe_dmamap_arg *)arg; - ctx->lpe_dma_busaddr = segs[0].ds_addr; -} + /* FIXME: More cleanup */ -static int -lpe_ifmedia_upd(struct ifnet *ifp) -{ - return (0); -} - -static void -lpe_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) -{ - struct lpe_softc *sc = ifp->if_softc; - struct mii_data *mii = device_get_softc(sc->lpe_miibus); - - lpe_lock(sc); - mii_pollstat(mii); - ifmr->ifm_active = mii->mii_media_active; - ifmr->ifm_status = mii->mii_media_status; - lpe_unlock(sc); + return ENXIO; } static device_method_t lpe_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, lpe_probe), - DEVMETHOD(device_attach, lpe_attach), - DEVMETHOD(device_detach, lpe_detach), - - /* Bus interface */ - DEVMETHOD(bus_print_child, bus_generic_print_child), - - /* MII interface */ - DEVMETHOD(miibus_readreg, lpe_miibus_readreg), - DEVMETHOD(miibus_writereg, lpe_miibus_writereg), - DEVMETHOD(miibus_statchg, lpe_miibus_statchg), - { 0, 0 } + DEVMETHOD(device_probe, lpc_eth_do_probe), + DEVMETHOD(device_attach, lpc_eth_attach), + DEVMETHOD(device_detach, lpc_eth_detach), + DEVMETHOD_END }; -static driver_t lpe_driver = { - "lpe", - lpe_methods, - sizeof(struct lpe_softc), +static driver_t lpe_nexus_driver = { + "lpe", + lpe_methods, + sizeof(lpc_eth_driver_entry) }; static devclass_t lpe_devclass; - -#ifndef __rtems__ -DRIVER_MODULE(lpe, simplebus, lpe_driver, lpe_devclass, 0, 0); -#else /* __rtems__ */ -DRIVER_MODULE(lpe, nexus, lpe_driver, lpe_devclass, 0, 0); -#endif /* __rtems__ */ -DRIVER_MODULE(miibus, lpe, miibus_driver, miibus_devclass, 0, 0); -MODULE_DEPEND(lpe, obio, 1, 1, 1); -MODULE_DEPEND(lpe, miibus, 1, 1, 1); +DRIVER_MODULE(lpe, nexus, lpe_nexus_driver, lpe_devclass, 0, 0); +MODULE_DEPEND(lpe, nexus, 1, 1, 1); MODULE_DEPEND(lpe, ether, 1, 1, 1); + +#endif /* LIBBSP_ARM_LPC24XX_BSP_H || LIBBSP_ARM_LPC32XX_BSP_H */ |