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/*-
* 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: release/9.1.0/sys/dev/le/if_le_cbus.c 183337 2008-09-24 21:26:46Z marius $");
#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 */
struct resource *sc_rres;
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_write_2(lesc->sc_rres, CNET98S_RAP, port);
bus_barrier(lesc->sc_rres, CNET98S_RAP, 2, BUS_SPACE_BARRIER_WRITE);
bus_write_2(lesc->sc_rres, 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_write_2(lesc->sc_rres, CNET98S_RAP, port);
bus_barrier(lesc->sc_rres, CNET98S_RAP, 2, BUS_SPACE_BARRIER_WRITE);
return (bus_read_2(lesc->sc_rres, 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_write_2(lesc->sc_rres, CNET98S_RAP, port);
bus_barrier(lesc->sc_rres, CNET98S_RAP, 2, BUS_SPACE_BARRIER_WRITE);
bus_write_2(lesc->sc_rres, 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_write_2(lesc->sc_rres, CNET98S_RAP, port);
bus_barrier(lesc->sc_rres, CNET98S_RAP, 2, BUS_SPACE_BARRIER_WRITE);
return (bus_read_2(lesc->sc_rres, 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_write_2(lesc->sc_rres, CNET98S_RESET,
bus_read_2(lesc->sc_rres, 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, i;
/*
* 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;
i = 0;
lesc->sc_rres = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &i,
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);
/* Reset the chip. */
bus_write_2(lesc->sc_rres, CNET98S_RESET,
bus_read_2(lesc->sc_rres, 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,
rman_get_rid(lesc->sc_rres), 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));
i = 0;
lesc->sc_rres = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &i,
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);
i = 0;
if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&i, 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_read_1(lesc->sc_rres, 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,
rman_get_rid(lesc->sc_ires), lesc->sc_ires);
fail_rres:
bus_release_resource(dev, SYS_RES_IOPORT,
rman_get_rid(lesc->sc_rres), 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,
rman_get_rid(lesc->sc_ires), lesc->sc_ires);
bus_release_resource(dev, SYS_RES_IOPORT,
rman_get_rid(lesc->sc_rres), 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);
}