diff options
Diffstat (limited to 'freebsd/sys/arm/lpc/if_lpe.c')
| -rwxr-xr-x | freebsd/sys/arm/lpc/if_lpe.c | 1414 |
1 files changed, 0 insertions, 1414 deletions
diff --git a/freebsd/sys/arm/lpc/if_lpe.c b/freebsd/sys/arm/lpc/if_lpe.c deleted file mode 100755 index 99016be3..00000000 --- a/freebsd/sys/arm/lpc/if_lpe.c +++ /dev/null @@ -1,1414 +0,0 @@ -#include <machine/rtems-bsd-kernel-space.h> - -/*- - * SPDX-License-Identifier: BSD-2-Clause-FreeBSD - * - * Copyright (c) 2011 Jakub Wojciech Klama <jceel@FreeBSD.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#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/module.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/rman.h> -#include <sys/bus.h> -#include <sys/socket.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_dl.h> -#include <net/if_media.h> -#include <net/if_types.h> -#include <net/if_var.h> - -#include <net/bpf.h> - -#ifndef __rtems__ -#include <dev/ofw/ofw_bus.h> -#include <dev/ofw/ofw_bus_subr.h> -#endif /* __rtems__ */ - -#include <dev/mii/mii.h> -#include <dev/mii/miivar.h> - -#include <arm/lpc/lpcreg.h> -#include <arm/lpc/lpcvar.h> -#include <arm/lpc/if_lpereg.h> - -#include <rtems/bsd/local/miibus_if.h> -#ifdef __rtems__ -#include <machine/rtems-bsd-cache.h> -#endif /* __rtems__ */ - -#ifdef DEBUG -#define debugf(fmt, args...) do { printf("%s(): ", __func__); \ - printf(fmt,##args); } while (0) -#else -#define debugf(fmt, args...) -#endif - -struct lpe_dmamap_arg { - bus_addr_t lpe_dma_busaddr; -}; - -struct lpe_rxdesc { - struct mbuf * lpe_rxdesc_mbuf; -#ifndef __rtems__ - bus_dmamap_t lpe_rxdesc_dmamap; -#endif /* __rtems__ */ -}; - -struct lpe_txdesc { - int lpe_txdesc_first; - struct mbuf * lpe_txdesc_mbuf; -#ifndef __rtems__ - bus_dmamap_t lpe_txdesc_dmamap; -#endif /* __rtems__ */ -}; - -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; -}; - -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; -}; - -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; -}; - -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); - - if (!ofw_bus_is_compatible(dev, "lpc,ethernet")) - return (ENXIO); -#endif /* __rtems__ */ - - device_set_desc(dev, "LPC32x0 10/100 Ethernet"); - return (BUS_PROBE_DEFAULT); -} - -static int -lpe_attach(device_t dev) -{ - struct lpe_softc *sc = device_get_softc(dev); - struct ifnet *ifp; - int rid, i; - uint32_t val; - - 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); -} - -static int -lpe_detach(device_t dev) -{ - struct lpe_softc *sc = device_get_softc(dev); - - lpe_stop(sc); - - 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); - - return (0); -} - -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; - - 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); - - val = lpe_read_4(sc, LPE_MIND); - - /* Wait until request is completed */ - while (val & LPE_MIND_BUSY) { - val = lpe_read_4(sc, LPE_MIND); - DELAY(10); - } - - if (val & LPE_MIND_INVALID) - return (0); - - 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); - - return (result); -} - -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; - - debugf("phy=%d reg=%d data=0x%04x\n", phy, reg, data); - - 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); - - lpe_write_4(sc, LPE_MWTD, (data & LPE_MWTD_DATAMASK)); - - val = lpe_read_4(sc, LPE_MIND); - - /* Wait until request is completed */ - while (val & LPE_MIND_BUSY) { - val = lpe_read_4(sc, LPE_MIND); - DELAY(10); - } - - return (0); -} - -static void -lpe_miibus_statchg(device_t dev) -{ - 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__ */ -} - -static void -lpe_reset(struct lpe_softc *sc) -{ - 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__ */ -} - -static void -lpe_init(void *arg) -{ - struct lpe_softc *sc = (struct lpe_softc *)arg; - - lpe_lock(sc); - lpe_init_locked(sc); - lpe_unlock(sc); -} - -static void -lpe_init_locked(struct lpe_softc *sc) -{ - struct ifnet *ifp = sc->lpe_ifp; - uint32_t cmd, mac1; - - lpe_lock_assert(sc); - - if (ifp->if_drv_flags & IFF_DRV_RUNNING) - return; - - /* 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); - - /* Enable receive */ - mac1 = lpe_read_4(sc, LPE_MAC1); - lpe_write_4(sc, LPE_MAC1, /*mac1 |*/ LPE_MAC1_RXENABLE | LPE_MAC1_PASSALL); - - lpe_write_4(sc, LPE_MAC2, LPE_MAC2_CRCENABLE | LPE_MAC2_PADCRCENABLE | - LPE_MAC2_FULLDUPLEX); - - lpe_write_4(sc, LPE_MCFG, LPE_MCFG_CLKSEL(7)); - - /* Set up Rx filter */ - lpe_set_rxmode(sc); - - /* 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); - - sc->lpe_cdata.lpe_tx_prod = 0; - sc->lpe_cdata.lpe_tx_last = 0; - sc->lpe_cdata.lpe_tx_used = 0; - - lpe_init_rx(sc); - - /* 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); - - /* 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); - - ifp->if_drv_flags |= IFF_DRV_RUNNING; - ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; - - callout_reset(&sc->lpe_tick, hz, lpe_tick, sc); -} - -static void -lpe_start(struct ifnet *ifp) -{ - struct lpe_softc *sc = (struct lpe_softc *)ifp->if_softc; - - lpe_lock(sc); - lpe_start_locked(ifp); - lpe_unlock(sc); -} - -static void -lpe_start_locked(struct ifnet *ifp) -{ - struct lpe_softc *sc = (struct lpe_softc *)ifp->if_softc; - struct mbuf *m_head; - int encap = 0; - - lpe_lock_assert(sc); - - 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; - - /* Dequeue first packet */ - IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); - if (!m_head) - break; - - lpe_encap(sc, &m_head); - - 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; - } - -} - -#ifdef __rtems__ -static int -lpe_get_segs_for_tx(struct mbuf *m, bus_dma_segment_t segs[LPE_MAXFRAGS], - int *nsegs) -{ - 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); -} -#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); - - sc->lpe_cdata.lpe_tx_used += nsegs; - sc->lpe_cdata.lpe_tx_prod = prod; - - return (0); -} - -static void -lpe_stop(struct lpe_softc *sc) -{ - lpe_lock(sc); - lpe_stop_locked(sc); - lpe_unlock(sc); -} - -static void -lpe_stop_locked(struct lpe_softc *sc) -{ - lpe_lock_assert(sc); - - callout_stop(&sc->lpe_tick); - - /* Disable interrupts */ - lpe_write_4(sc, LPE_INTCLEAR, 0xffffffff); - - /* Stop EMAC */ - lpe_write_4(sc, LPE_MAC1, 0); - lpe_write_4(sc, LPE_MAC2, 0); - lpe_write_4(sc, LPE_COMMAND, 0); - - sc->lpe_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; - sc->lpe_ifp->if_drv_flags &= ~IFF_DRV_RUNNING; -} - -static int -lpe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) -{ - 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); -} - -static void lpe_set_rxmode(struct lpe_softc *sc) -{ - struct ifnet *ifp = sc->lpe_ifp; - uint32_t rxfilt; - - rxfilt = LPE_RXFILTER_UNIHASH | LPE_RXFILTER_MULTIHASH | LPE_RXFILTER_PERFECT; - - if (ifp->if_flags & IFF_BROADCAST) - rxfilt |= LPE_RXFILTER_BROADCAST; - - if (ifp->if_flags & IFF_PROMISC) - rxfilt |= LPE_RXFILTER_UNICAST | LPE_RXFILTER_MULTICAST; - - if (ifp->if_flags & IFF_ALLMULTI) - rxfilt |= LPE_RXFILTER_MULTICAST; - - lpe_write_4(sc, LPE_RXFILTER_CTRL, rxfilt); -} - -static void lpe_set_rxfilter(struct lpe_softc *sc) -{ - struct ifnet *ifp = sc->lpe_ifp; - struct ifmultiaddr *ifma; - int index; - uint32_t hashl, hashh; - - hashl = 0; - hashh = 0; - - if_maddr_rlock(ifp); - TAILQ_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); -} - -static void -lpe_intr(void *arg) -{ - 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); -} - -static void -lpe_rxintr(struct lpe_softc *sc) -{ - 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); - } -} - -static void -lpe_txintr(struct lpe_softc *sc) -{ - 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)); - - 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; - } - - sc->lpe_cdata.lpe_tx_used--; - LPE_INC(sc->lpe_cdata.lpe_tx_last, LPE_TXDESC_NUM); - } - - if (!sc->lpe_cdata.lpe_tx_used) - sc->lpe_watchdog_timer = 0; -} - -static void -lpe_tick(void *arg) -{ - struct lpe_softc *sc = (struct lpe_softc *)arg; - struct mii_data *mii = device_get_softc(sc->lpe_miibus); - - lpe_lock_assert(sc); - - mii_tick(mii); - lpe_watchdog(sc); - - callout_reset(&sc->lpe_tick, hz, lpe_tick, sc); -} - -static void -lpe_watchdog(struct lpe_softc *sc) -{ - struct ifnet *ifp = sc->lpe_ifp; - - lpe_lock_assert(sc); - - if (sc->lpe_watchdog_timer == 0 || sc->lpe_watchdog_timer--) - return; - - /* Chip has stopped responding */ - device_printf(sc->lpe_dev, "WARNING: chip hangup, restarting...\n"); - lpe_stop_locked(sc); - lpe_init_locked(sc); - - /* Try to resend packets */ - if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) - lpe_start_locked(ifp); -} - -static int -lpe_dma_alloc(struct lpe_softc *sc) -{ - 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); -} - -static int -lpe_dma_alloc_rx(struct lpe_softc *sc) -{ - 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); -} - -static int -lpe_dma_alloc_tx(struct lpe_softc *sc) -{ - 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); -} - -static int -lpe_init_rx(struct lpe_softc *sc) -{ - int i, err; - - for (i = 0; i < LPE_RXDESC_NUM; i++) { - err = lpe_init_rxbuf(sc, i); - if (err) - return (err); - } - - return (0); -} - -static int -lpe_init_rxbuf(struct lpe_softc *sc, int n) -{ - struct lpe_rxdesc *rxd; - struct lpe_hwdesc *hwd; - struct lpe_hwstatus *hws; - struct mbuf *m; - bus_dma_segment_t segs[1]; - int nsegs; - - rxd = &sc->lpe_cdata.lpe_rx_desc[n]; - hwd = &sc->lpe_rdata.lpe_rx_ring[n]; - hws = &sc->lpe_rdata.lpe_rx_status[n]; - 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); -} - -static void -lpe_discard_rxbuf(struct lpe_softc *sc, int n) -{ - 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; - } -} - -static void -lpe_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) -{ - struct lpe_dmamap_arg *ctx; - - if (error) - return; - - ctx = (struct lpe_dmamap_arg *)arg; - ctx->lpe_dma_busaddr = segs[0].ds_addr; -} - -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); -} - -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 } -}; - -static driver_t lpe_driver = { - "lpe", - lpe_methods, - sizeof(struct lpe_softc), -}; - -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); -MODULE_DEPEND(lpe, ether, 1, 1, 1); |