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authorTill Straumann <strauman@slac.stanford.edu>2009-04-22 22:06:58 +0000
committerTill Straumann <strauman@slac.stanford.edu>2009-04-22 22:06:58 +0000
commita8bf95d0249565f4210ccab5c13232d501ce0c2d (patch)
treee01f2eca98add8dba13eec23a95fa22120638890 /bsd_eth_drivers/if_le/if_le_cbus.c
parenta90d1ed6c9cbdf2f899d13178fd589f80c5ab0e6 (diff)
downloadlibbsdport-a8bf95d0249565f4210ccab5c13232d501ce0c2d.tar.bz2
- importing updated version from SLAC as of 20090422
Diffstat (limited to 'bsd_eth_drivers/if_le/if_le_cbus.c')
-rw-r--r--bsd_eth_drivers/if_le/if_le_cbus.c451
1 files changed, 451 insertions, 0 deletions
diff --git a/bsd_eth_drivers/if_le/if_le_cbus.c b/bsd_eth_drivers/if_le/if_le_cbus.c
new file mode 100644
index 0000000..40d0e19
--- /dev/null
+++ b/bsd_eth_drivers/if_le/if_le_cbus.c
@@ -0,0 +1,451 @@
+/*-
+ * Copyright (c) 1994-2000
+ * Paul Richards. All rights reserved.
+ *
+ * PC-98 port by Chiharu Shibata & FreeBSD(98) porting team.
+ *
+ * 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,
+ * verbatim and that no modifications are made prior to this
+ * point in the file.
+ * 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.
+ * 3. The name Paul Richards may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``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 PAUL RICHARDS 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.
+ *
+ * from: FreeBSD: src/sys/dev/lnc/if_lnc_cbus.c,v 1.12 2005/11/12 19:14:21
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/sys/dev/le/if_le_cbus.c,v 1.5 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 <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_media.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <isa/isavar.h>
+
+#include <dev/le/lancereg.h>
+#include <dev/le/lancevar.h>
+#include <dev/le/am7990var.h>
+
+#define LE_CBUS_MEMSIZE (16*1024)
+#define CNET98S_IOSIZE 32
+#define CNET98S_RDP 0x10
+#define CNET98S_RAP 0x12
+#define CNET98S_RESET 0x14
+#define CNET98S_BDP 0x16
+
+struct le_cbus_softc {
+ struct am7990_softc sc_am7990; /* glue to MI code */
+
+ 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;
+
+ bus_dma_tag_t sc_pdmat;
+ bus_dma_tag_t sc_dmat;
+ bus_dmamap_t sc_dmam;
+};
+
+static device_probe_t le_cbus_probe;
+static device_attach_t le_cbus_attach;
+static device_detach_t le_cbus_detach;
+static device_resume_t le_cbus_resume;
+static device_suspend_t le_cbus_suspend;
+
+static device_method_t le_cbus_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, le_cbus_probe),
+ DEVMETHOD(device_attach, le_cbus_attach),
+ DEVMETHOD(device_detach, le_cbus_detach),
+ /* We can just use the suspend method here. */
+ DEVMETHOD(device_shutdown, le_cbus_suspend),
+ DEVMETHOD(device_suspend, le_cbus_suspend),
+ DEVMETHOD(device_resume, le_cbus_resume),
+
+ { 0, 0 }
+};
+
+DEFINE_CLASS_0(le, le_cbus_driver, le_cbus_methods, sizeof(struct le_cbus_softc));
+DRIVER_MODULE(le, isa, le_cbus_driver, le_devclass, 0, 0);
+MODULE_DEPEND(le, ether, 1, 1, 1);
+
+static bus_addr_t le_ioaddr_cnet98s[CNET98S_IOSIZE] = {
+ 0x000, 0x001, 0x002, 0x003, 0x004, 0x005, 0x006, 0x007,
+ 0x008, 0x009, 0x00a, 0x00b, 0x00c, 0x00d, 0x00e, 0x00f,
+ 0x400, 0x401, 0x402, 0x403, 0x404, 0x405, 0x406, 0x407,
+ 0x408, 0x409, 0x40a, 0x40b, 0x40c, 0x40d, 0x40e, 0x40f,
+};
+
+static void le_cbus_wrbcr(struct lance_softc *, uint16_t, uint16_t);
+#ifdef LEDEBUG
+static uint16_t le_cbus_rdbcr(struct lance_softc *, uint16_t);
+#endif
+static void le_cbus_wrcsr(struct lance_softc *, uint16_t, uint16_t);
+static uint16_t le_cbus_rdcsr(struct lance_softc *, uint16_t);
+static void le_cbus_hwreset(struct lance_softc *);
+static bus_dmamap_callback_t le_cbus_dma_callback;
+
+static void
+le_cbus_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val)
+{
+ struct le_cbus_softc *lesc = (struct le_cbus_softc *)sc;
+
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, port);
+ bus_space_barrier(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, 2,
+ BUS_SPACE_BARRIER_WRITE);
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_BDP, val);
+}
+
+#ifdef LEDEBUG
+static uint16_t
+le_cbus_rdbcr(struct lance_softc *sc, uint16_t port)
+{
+ struct le_cbus_softc *lesc = (struct le_cbus_softc *)sc;
+
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, port);
+ bus_space_barrier(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, 2,
+ BUS_SPACE_BARRIER_WRITE);
+ return (bus_space_read_2(lesc->sc_regt, lesc->sc_regh, CNET98S_BDP));
+}
+#endif
+
+static void
+le_cbus_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
+{
+ struct le_cbus_softc *lesc = (struct le_cbus_softc *)sc;
+
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, port);
+ bus_space_barrier(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, 2,
+ BUS_SPACE_BARRIER_WRITE);
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RDP, val);
+}
+
+static uint16_t
+le_cbus_rdcsr(struct lance_softc *sc, uint16_t port)
+{
+ struct le_cbus_softc *lesc = (struct le_cbus_softc *)sc;
+
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, port);
+ bus_space_barrier(lesc->sc_regt, lesc->sc_regh, CNET98S_RAP, 2,
+ BUS_SPACE_BARRIER_WRITE);
+ return (bus_space_read_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RDP));
+}
+
+static void
+le_cbus_hwreset(struct lance_softc *sc)
+{
+ struct le_cbus_softc *lesc = (struct le_cbus_softc *)sc;
+
+ /*
+ * NB: These are Contec C-NET(98)S only.
+ */
+
+ /* Reset the chip. */
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RESET,
+ bus_space_read_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RESET));
+ DELAY(500);
+
+ /* ISA bus configuration */
+ /* ISACSR0 - set Master Mode Read Active time to 300ns. */
+ le_cbus_wrbcr(sc, LE_BCR0, 0x0006);
+ /* ISACSR1 - set Master Mode Write Active time to 300ns. */
+ le_cbus_wrbcr(sc, LE_BCR1, 0x0006);
+#ifdef LEDEBUG
+ device_printf(dev, "ISACSR2=0x%x\n", le_cbus_rdbcr(sc, LE_BCR2));
+#endif
+ /* ISACSR5 - LED1 */
+ le_cbus_wrbcr(sc, LE_BCR5, LE_B4_PSE | LE_B4_XMTE);
+ /* ISACSR6 - LED2 */
+ le_cbus_wrbcr(sc, LE_BCR6, LE_B4_PSE | LE_B4_RCVE);
+ /* ISACSR7 - LED3 */
+ le_cbus_wrbcr(sc, LE_BCR7, LE_B4_PSE | LE_B4_COLE);
+}
+
+static void
+le_cbus_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
+{
+ struct lance_softc *sc = (struct lance_softc *)xsc;
+
+ if (error != 0)
+ return;
+ KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__));
+ sc->sc_addr = segs[0].ds_addr;
+}
+
+static int
+le_cbus_probe(device_t dev)
+{
+ struct le_cbus_softc *lesc;
+ struct lance_softc *sc;
+ int error;
+
+ /*
+ * Skip PnP devices as some wedge when trying to probe them as
+ * C-NET(98)S.
+ */
+ if (isa_get_vendorid(dev))
+ return (ENXIO);
+
+ lesc = device_get_softc(dev);
+ sc = &lesc->sc_am7990.lsc;
+
+ lesc->sc_rrid = 0;
+ lesc->sc_rres = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &lesc->sc_rrid,
+ le_ioaddr_cnet98s, CNET98S_IOSIZE, RF_ACTIVE);
+ if (lesc->sc_rres == NULL)
+ return (ENXIO);
+ isa_load_resourcev(lesc->sc_rres, le_ioaddr_cnet98s, CNET98S_IOSIZE);
+ lesc->sc_regt = rman_get_bustag(lesc->sc_rres);
+ lesc->sc_regh = rman_get_bushandle(lesc->sc_rres);
+
+ /* Reset the chip. */
+ bus_space_write_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RESET,
+ bus_space_read_2(lesc->sc_regt, lesc->sc_regh, CNET98S_RESET));
+ DELAY(500);
+
+ /* Stop the chip and put it in a known state. */
+ le_cbus_wrcsr(sc, LE_CSR0, LE_C0_STOP);
+ DELAY(100);
+ if (le_cbus_rdcsr(sc, LE_CSR0) != LE_C0_STOP) {
+ error = ENXIO;
+ goto fail;
+ }
+ le_cbus_wrcsr(sc, LE_CSR3, 0);
+ device_set_desc(dev, "C-NET(98)S");
+ error = BUS_PROBE_DEFAULT;
+
+ fail:
+ bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres);
+ return (error);
+}
+
+static int
+le_cbus_attach(device_t dev)
+{
+ struct le_cbus_softc *lesc;
+ struct lance_softc *sc;
+ int error, i;
+
+ lesc = device_get_softc(dev);
+ sc = &lesc->sc_am7990.lsc;
+
+ LE_LOCK_INIT(sc, device_get_nameunit(dev));
+
+ lesc->sc_rrid = 0;
+ lesc->sc_rres = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &lesc->sc_rrid,
+ le_ioaddr_cnet98s, CNET98S_IOSIZE, RF_ACTIVE);
+ if (lesc->sc_rres == NULL) {
+ device_printf(dev, "cannot allocate registers\n");
+ error = ENXIO;
+ goto fail_mtx;
+ }
+ isa_load_resourcev(lesc->sc_rres, le_ioaddr_cnet98s, CNET98S_IOSIZE);
+ lesc->sc_regt = rman_get_bustag(lesc->sc_rres);
+ lesc->sc_regh = rman_get_bushandle(lesc->sc_rres);
+
+ 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;
+ }
+
+ error = bus_dma_tag_create(
+ bus_get_dma_tag(dev), /* parent */
+ 1, 0, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_24BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filter, filterarg */
+ BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
+ 0, /* nsegments */
+ BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
+ 0, /* flags */
+ NULL, NULL, /* lockfunc, lockarg */
+ &lesc->sc_pdmat);
+ if (error != 0) {
+ device_printf(dev, "cannot allocate parent DMA tag\n");
+ goto fail_ires;
+ }
+
+ sc->sc_memsize = LE_CBUS_MEMSIZE;
+ /*
+ * For Am79C90, Am79C961 and Am79C961A the init block must be 2-byte
+ * aligned and the ring descriptors must be 8-byte aligned.
+ */
+ error = bus_dma_tag_create(
+ lesc->sc_pdmat, /* parent */
+ 8, 0, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_24BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filter, filterarg */
+ sc->sc_memsize, /* maxsize */
+ 1, /* nsegments */
+ sc->sc_memsize, /* maxsegsize */
+ 0, /* flags */
+ NULL, NULL, /* lockfunc, lockarg */
+ &lesc->sc_dmat);
+ if (error != 0) {
+ device_printf(dev, "cannot allocate buffer DMA tag\n");
+ goto fail_pdtag;
+ }
+
+ error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem,
+ BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam);
+ if (error != 0) {
+ device_printf(dev, "cannot allocate DMA buffer memory\n");
+ goto fail_dtag;
+ }
+
+ sc->sc_addr = 0;
+ error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem,
+ sc->sc_memsize, le_cbus_dma_callback, sc, 0);
+ if (error != 0 || sc->sc_addr == 0) {
+ device_printf(dev, "cannot load DMA buffer map\n");
+ goto fail_dmem;
+ }
+
+ sc->sc_flags = 0;
+ sc->sc_conf3 = 0;
+
+ /*
+ * Extract the physical MAC address from the ROM.
+ */
+ for (i = 0; i < sizeof(sc->sc_enaddr); i++)
+ sc->sc_enaddr[i] = bus_space_read_1(lesc->sc_regt,
+ lesc->sc_regh, i * 2);
+
+ sc->sc_copytodesc = lance_copytobuf_contig;
+ sc->sc_copyfromdesc = lance_copyfrombuf_contig;
+ sc->sc_copytobuf = lance_copytobuf_contig;
+ sc->sc_copyfrombuf = lance_copyfrombuf_contig;
+ sc->sc_zerobuf = lance_zerobuf_contig;
+
+ sc->sc_rdcsr = le_cbus_rdcsr;
+ sc->sc_wrcsr = le_cbus_wrcsr;
+ sc->sc_hwreset = le_cbus_hwreset;
+ sc->sc_hwinit = NULL;
+ sc->sc_hwintr = NULL;
+ sc->sc_nocarrier = NULL;
+ sc->sc_mediachange = NULL;
+ sc->sc_mediastatus = NULL;
+ sc->sc_supmedia = NULL;
+
+ 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_dmap;
+ }
+
+ 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_dmap:
+ bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
+ fail_dmem:
+ bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
+ fail_dtag:
+ bus_dma_tag_destroy(lesc->sc_dmat);
+ fail_pdtag:
+ bus_dma_tag_destroy(lesc->sc_pdmat);
+ fail_ires:
+ bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires);
+ fail_rres:
+ bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres);
+ fail_mtx:
+ LE_LOCK_DESTROY(sc);
+ return (error);
+}
+
+static int
+le_cbus_detach(device_t dev)
+{
+ struct le_cbus_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_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
+ bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
+ bus_dma_tag_destroy(lesc->sc_dmat);
+ bus_dma_tag_destroy(lesc->sc_pdmat);
+ bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires);
+ bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres);
+ LE_LOCK_DESTROY(sc);
+
+ return (0);
+}
+
+static int
+le_cbus_suspend(device_t dev)
+{
+ struct le_cbus_softc *lesc;
+
+ lesc = device_get_softc(dev);
+
+ lance_suspend(&lesc->sc_am7990.lsc);
+
+ return (0);
+}
+
+static int
+le_cbus_resume(device_t dev)
+{
+ struct le_cbus_softc *lesc;
+
+ lesc = device_get_softc(dev);
+
+ lance_resume(&lesc->sc_am7990.lsc);
+
+ return (0);
+}