diff options
Diffstat (limited to 'bsd_eth_drivers/if_le/if_le_lebuffer.c')
| -rw-r--r-- | bsd_eth_drivers/if_le/if_le_lebuffer.c | 408 |
1 files changed, 0 insertions, 408 deletions
diff --git a/bsd_eth_drivers/if_le/if_le_lebuffer.c b/bsd_eth_drivers/if_le/if_le_lebuffer.c deleted file mode 100644 index 5ad8d31..0000000 --- a/bsd_eth_drivers/if_le/if_le_lebuffer.c +++ /dev/null @@ -1,408 +0,0 @@ -/*- - * Copyright (c) 2006 Marius Strobl <marius@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: src/sys/dev/le/if_le_lebuffer.c,v 1.2 2007/02/23 12:18:45 piso Exp $"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bus.h> -#include <sys/endian.h> -#include <sys/kernel.h> -#include <sys/lock.h> -#include <sys/module.h> -#include <sys/mutex.h> -#include <sys/resource.h> -#include <sys/rman.h> -#include <sys/socket.h> - -#include <dev/ofw/ofw_bus.h> - -#include <machine/bus.h> -#include <machine/ofw_machdep.h> -#include <machine/resource.h> - -#include <net/ethernet.h> -#include <net/if.h> -#include <net/if_media.h> - -#include <dev/le/lancereg.h> -#include <dev/le/lancevar.h> -#include <dev/le/am7990reg.h> -#include <dev/le/am7990var.h> - -/* - * LANCE registers - */ -#define LEREG1_RDP 0 /* Register Data port */ -#define LEREG1_RAP 2 /* Register Address port */ - -struct le_lebuffer_softc { - struct am7990_softc sc_am7990; /* glue to MI code */ - - int sc_brid; - struct resource *sc_bres; - bus_space_tag_t sc_buft; - bus_space_handle_t sc_bufh; - - int sc_rrid; - struct resource *sc_rres; - bus_space_tag_t sc_regt; - bus_space_handle_t sc_regh; - - int sc_irid; - struct resource *sc_ires; - void *sc_ih; -}; - -static devclass_t le_lebuffer_devclass; - -static device_probe_t le_lebuffer_probe; -static device_attach_t le_lebuffer_attach; -static device_detach_t le_lebuffer_detach; -static device_resume_t le_buffer_resume; -static device_suspend_t le_buffer_suspend; - -static device_method_t le_lebuffer_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, le_lebuffer_probe), - DEVMETHOD(device_attach, le_lebuffer_attach), - DEVMETHOD(device_detach, le_lebuffer_detach), - /* We can just use the suspend method here. */ - DEVMETHOD(device_shutdown, le_buffer_suspend), - DEVMETHOD(device_suspend, le_buffer_suspend), - DEVMETHOD(device_resume, le_buffer_resume), - - { 0, 0 } -}; - -DEFINE_CLASS_0(le, le_lebuffer_driver, le_lebuffer_methods, - sizeof(struct le_lebuffer_softc)); -DRIVER_MODULE(le, lebuffer, le_lebuffer_driver, le_lebuffer_devclass, 0, 0); -MODULE_DEPEND(le, ether, 1, 1, 1); - -/* - * Media types supported - */ -static const int le_lebuffer_media[] = { - IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0) -}; -#define NLEMEDIA \ - (sizeof(le_lebuffer_media) / sizeof(le_lebuffer_media[0])) - -static void le_lebuffer_wrcsr(struct lance_softc *, uint16_t, uint16_t); -static uint16_t le_lebuffer_rdcsr(struct lance_softc *, uint16_t); -static void le_lebuffer_copytodesc(struct lance_softc *, void *, int, int); -static void le_lebuffer_copyfromdesc(struct lance_softc *, void *, int, int); -static void le_lebuffer_copytobuf(struct lance_softc *, void *, int, int); -static void le_lebuffer_copyfrombuf(struct lance_softc *, void *, int, int); -static void le_lebuffer_zerobuf(struct lance_softc *, int, int); - -static void -le_lebuffer_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) -{ - struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; - - bus_space_write_2(lesc->sc_regt, lesc->sc_regh, LEREG1_RAP, port); - bus_space_barrier(lesc->sc_regt, lesc->sc_regh, LEREG1_RAP, 2, - BUS_SPACE_BARRIER_WRITE); - bus_space_write_2(lesc->sc_regt, lesc->sc_regh, LEREG1_RDP, val); -} - -static uint16_t -le_lebuffer_rdcsr(struct lance_softc *sc, uint16_t port) -{ - struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; - - bus_space_write_2(lesc->sc_regt, lesc->sc_regh, LEREG1_RAP, port); - bus_space_barrier(lesc->sc_regt, lesc->sc_regh, LEREG1_RAP, 2, - BUS_SPACE_BARRIER_WRITE); - return (bus_space_read_2(lesc->sc_regt, lesc->sc_regh, LEREG1_RDP)); -} - -/* - * It turns out that using bus_space(9) to access the buffers and the - * descriptors yields way more throughput than accessing them via the - * KVA returned by rman_get_virtual(9). The descriptor rings can be - * accessed using 8-bit up to 64-bit operations while the buffers can - * be only accessed using 8-bit and 16-bit operations. - * NB: For whatever reason setting LE_C3_BSWP has no effect with at - * least the 501-2981 (although their 'busmaster-regval' property - * indicates to set LE_C3_BSWP also for these cards), so we need - * to manually byte swap access to the buffers, i.e. the accesses - * going through the RX/TX FIFOs. - */ - -static void -le_lebuffer_copytodesc(struct lance_softc *sc, void *fromv, int off, int len) -{ - struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; - caddr_t from = fromv; - - for (; len >= 8; len -= 8, off += 8, from += 8) - bus_space_write_8(lesc->sc_buft, lesc->sc_bufh, off, - be64dec(from)); - for (; len >= 4; len -= 4, off += 4, from += 4) - bus_space_write_4(lesc->sc_buft, lesc->sc_bufh, off, - be32dec(from)); - for (; len >= 2; len -= 2, off += 2, from += 2) - bus_space_write_2(lesc->sc_buft, lesc->sc_bufh, off, - be16dec(from)); - if (len == 1) - bus_space_write_1(lesc->sc_buft, lesc->sc_bufh, off, - *from); -} - -static void -le_lebuffer_copyfromdesc(struct lance_softc *sc, void *tov, int off, int len) -{ - struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; - caddr_t to = tov; - - for (; len >= 8; len -= 8, off += 8, to += 8) - be64enc(to, - bus_space_read_8(lesc->sc_buft, lesc->sc_bufh, off)); - for (; len >= 4; len -= 4, off += 4, to += 4) - be32enc(to, - bus_space_read_4(lesc->sc_buft, lesc->sc_bufh, off)); - for (; len >= 2; len -= 2, off += 2, to += 2) - be16enc(to, - bus_space_read_2(lesc->sc_buft, lesc->sc_bufh, off)); - if (len == 1) - *to = - bus_space_read_1(lesc->sc_buft, lesc->sc_bufh, off); -} - -static void -le_lebuffer_copytobuf(struct lance_softc *sc, void *fromv, int off, int len) -{ - struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; - caddr_t from = fromv; - - for (; len >= 2; len -= 2, off += 2, from += 2) - bus_space_write_2(lesc->sc_buft, lesc->sc_bufh, off, - le16dec(from)); - if (len == 1) - bus_space_write_1(lesc->sc_buft, lesc->sc_bufh, off + 1, - *from); -} - -static void -le_lebuffer_copyfrombuf(struct lance_softc *sc, void *tov, int off, int len) -{ - struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; - caddr_t to = tov; - - for (; len >= 2; len -= 2, off += 2, to += 2) - le16enc(to, - bus_space_read_2(lesc->sc_buft, lesc->sc_bufh, off)); - if (len == 1) - *to = - bus_space_read_1(lesc->sc_buft, lesc->sc_bufh, off + 1); -} - -static void -le_lebuffer_zerobuf(struct lance_softc *sc, int off, int len) -{ - struct le_lebuffer_softc *lesc = (struct le_lebuffer_softc *)sc; - - for (; len >= 2; len -= 2, off += 2) - bus_space_write_2(lesc->sc_buft, lesc->sc_bufh, off, 0); - if (len == 1) - bus_space_write_1(lesc->sc_buft, lesc->sc_bufh, off + 1, 0); -} - -static int -le_lebuffer_probe(device_t dev) -{ - - if (strcmp(ofw_bus_get_name(dev), "le") == 0) { - device_set_desc(dev, "LANCE Ethernet"); - return (BUS_PROBE_DEFAULT); - } - return (ENXIO); -} - -static int -le_lebuffer_attach(device_t dev) -{ - struct le_lebuffer_softc *lesc; - struct lance_softc *sc; - int error; - - lesc = device_get_softc(dev); - sc = &lesc->sc_am7990.lsc; - - LE_LOCK_INIT(sc, device_get_nameunit(dev)); - - /* - * The "register space" of the parent is just a buffer where the - * the LANCE descriptor rings and the RX/TX buffers can be stored. - */ - lesc->sc_brid = 0; - lesc->sc_bres = bus_alloc_resource_any(device_get_parent(dev), - SYS_RES_MEMORY, &lesc->sc_brid, RF_ACTIVE); - if (lesc->sc_bres == NULL) { - device_printf(dev, "cannot allocate LANCE buffer\n"); - error = ENXIO; - goto fail_mtx; - } - lesc->sc_buft = rman_get_bustag(lesc->sc_bres); - lesc->sc_bufh = rman_get_bushandle(lesc->sc_bres); - - /* Allocate LANCE registers. */ - lesc->sc_rrid = 0; - lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, - &lesc->sc_rrid, RF_ACTIVE); - if (lesc->sc_rres == NULL) { - device_printf(dev, "cannot allocate LANCE registers\n"); - error = ENXIO; - goto fail_bres; - } - lesc->sc_regt = rman_get_bustag(lesc->sc_rres); - lesc->sc_regh = rman_get_bushandle(lesc->sc_rres); - - /* Allocate LANCE interrupt. */ - lesc->sc_irid = 0; - if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, - &lesc->sc_irid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { - device_printf(dev, "cannot allocate interrupt\n"); - error = ENXIO; - goto fail_rres; - } - - /* - * LANCE view is offset by buffer location. - * Note that we don't use sc->sc_mem. - */ - sc->sc_addr = 0; - sc->sc_memsize = rman_get_size(lesc->sc_bres); - sc->sc_flags = 0; - - /* That old black magic... */ - if (OF_getprop(ofw_bus_get_node(dev), "busmaster-regval", - &sc->sc_conf3, sizeof(sc->sc_conf3)) == -1) - sc->sc_conf3 = LE_C3_ACON | LE_C3_BCON; - /* - * Make sure LE_C3_BSWP is cleared so that for cards where - * that flag actually works le_lebuffer_copy{from,to}buf() - * don't fail... - */ - sc->sc_conf3 &= ~LE_C3_BSWP; - - OF_getetheraddr(dev, sc->sc_enaddr); - - sc->sc_copytodesc = le_lebuffer_copytodesc; - sc->sc_copyfromdesc = le_lebuffer_copyfromdesc; - sc->sc_copytobuf = le_lebuffer_copytobuf; - sc->sc_copyfrombuf = le_lebuffer_copyfrombuf; - sc->sc_zerobuf = le_lebuffer_zerobuf; - - sc->sc_rdcsr = le_lebuffer_rdcsr; - sc->sc_wrcsr = le_lebuffer_wrcsr; - sc->sc_hwreset = NULL; - sc->sc_hwinit = NULL; - sc->sc_hwintr = NULL; - sc->sc_nocarrier = NULL; - sc->sc_mediachange = NULL; - sc->sc_mediastatus = NULL; - sc->sc_supmedia = le_lebuffer_media; - sc->sc_nsupmedia = NLEMEDIA; - sc->sc_defaultmedia = le_lebuffer_media[0]; - - error = am7990_config(&lesc->sc_am7990, device_get_name(dev), - device_get_unit(dev)); - if (error != 0) { - device_printf(dev, "cannot attach Am7990\n"); - goto fail_ires; - } - - error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE, - NULL, am7990_intr, sc, &lesc->sc_ih); - if (error != 0) { - device_printf(dev, "cannot set up interrupt\n"); - goto fail_am7990; - } - - return (0); - - fail_am7990: - am7990_detach(&lesc->sc_am7990); - fail_ires: - bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires); - fail_rres: - bus_release_resource(dev, SYS_RES_MEMORY, lesc->sc_rrid, lesc->sc_rres); - fail_bres: - bus_release_resource(device_get_parent(dev), SYS_RES_MEMORY, - lesc->sc_brid, lesc->sc_bres); - fail_mtx: - LE_LOCK_DESTROY(sc); - return (error); -} - -static int -le_lebuffer_detach(device_t dev) -{ - struct le_lebuffer_softc *lesc; - struct lance_softc *sc; - - lesc = device_get_softc(dev); - sc = &lesc->sc_am7990.lsc; - - bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); - am7990_detach(&lesc->sc_am7990); - bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires); - bus_release_resource(dev, SYS_RES_MEMORY, lesc->sc_rrid, lesc->sc_rres); - bus_release_resource(device_get_parent(dev), SYS_RES_MEMORY, - lesc->sc_brid, lesc->sc_bres); - LE_LOCK_DESTROY(sc); - - return (0); -} - -static int -le_buffer_suspend(device_t dev) -{ - struct le_lebuffer_softc *lesc; - - lesc = device_get_softc(dev); - - lance_suspend(&lesc->sc_am7990.lsc); - - return (0); -} - -static int -le_buffer_resume(device_t dev) -{ - struct le_lebuffer_softc *lesc; - - lesc = device_get_softc(dev); - - lance_resume(&lesc->sc_am7990.lsc); - - return (0); -} |