155 lines
4.4 KiB
C
155 lines
4.4 KiB
C
/* $NetBSD: genet_acpi.c,v 1.1 2020/02/22 02:28:06 jmcneill Exp $ */
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/*-
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* Copyright (c) 2020 Jared McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "opt_net_mpsafe.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: genet_acpi.c,v 1.1 2020/02/22 02:28:06 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <dev/mii/miivar.h>
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#include <dev/ic/bcmgenetvar.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/acpi/acpi_intr.h>
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#ifdef NET_MPSAFE
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#define GENET_INTR_MPSAFE true
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#else
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#define GENET_INTR_MPSAFE false
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#endif
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static const char * const compatible[] = {
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"BCM6E4E", /* Broadcom GENET v5 */
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NULL
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};
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static int genet_acpi_match(device_t, cfdata_t, void *);
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static void genet_acpi_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(genet_acpi, sizeof(struct genet_softc),
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genet_acpi_match, genet_acpi_attach, NULL, NULL);
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static int
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genet_acpi_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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return acpi_match_hid(aa->aa_node->ad_devinfo, compatible);
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}
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static void
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genet_acpi_attach(device_t parent, device_t self, void *aux)
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{
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struct genet_softc * const sc = device_private(self);
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struct acpi_attach_args *aa = aux;
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ACPI_HANDLE handle = aa->aa_node->ad_handle;
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struct acpi_resources res;
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struct acpi_mem *mem;
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struct acpi_irq *irq;
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char *phy_mode;
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ACPI_STATUS rv;
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int error;
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void *ih;
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sc->sc_dev = self;
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rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS",
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&res, &acpi_resource_parse_ops_default);
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if (ACPI_FAILURE(rv))
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return;
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mem = acpi_res_mem(&res, 0);
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if (mem == NULL) {
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aprint_error_dev(self, "couldn't find mem resource\n");
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goto done;
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}
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irq = acpi_res_irq(&res, 0);
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if (irq == NULL) {
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aprint_error_dev(self, "couldn't find irq resource\n");
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goto done;
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}
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sc->sc_bst = aa->aa_memt;
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error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length,
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0, &sc->sc_bsh);
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if (error != 0) {
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aprint_error_dev(self, "couldn't map registers\n");
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goto done;
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}
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sc->sc_dmat = BUS_DMA_TAG_VALID(aa->aa_dmat64) ?
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aa->aa_dmat64 : aa->aa_dmat;
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sc->sc_phy_id = MII_PHY_ANY;
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rv = acpi_dsd_string(handle, "phy-mode", &phy_mode);
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if (ACPI_FAILURE(rv)) {
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aprint_error_dev(self, "missing 'phy-mode' property\n");
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goto done;
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}
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if (strcmp(phy_mode, "rgmii-rxid") == 0)
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sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID;
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else if (strcmp(phy_mode, "rgmii-txid") == 0)
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sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID;
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else if (strcmp(phy_mode, "rgmii") == 0)
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sc->sc_phy_mode = GENET_PHY_MODE_RGMII;
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else {
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aprint_error(": unsupported phy-mode '%s'\n", phy_mode);
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goto done;
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}
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aprint_normal("%s", device_xname(self));
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if (genet_attach(sc) != 0)
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goto done;
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ih = acpi_intr_establish(self, (uint64_t)handle, IPL_NET,
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GENET_INTR_MPSAFE, genet_intr, sc, device_xname(self));
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if (ih == NULL) {
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aprint_error_dev(self, "couldn't establish interrupt\n");
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goto done;
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}
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done:
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acpi_resource_cleanup(&res);
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}
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