NetBSD/sys/dev/pci/if_mtd_pci.c

143 lines
4.5 KiB
C

/* $NetBSD: if_mtd_pci.c,v 1.16 2011/07/26 20:51:24 dyoung Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Peter Bex <Peter.Bex@student.kun.nl>.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* PCI interface for MTD803 cards
* Written by Peter Bex (peter.bex@student.kun.nl)
*/
/* TODO: Check why in IO space, the MII won't work. Memory mapped works */
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_mtd_pci.c,v 1.16 2011/07/26 20:51:24 dyoung Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <sys/bus.h>
#include <dev/mii/miivar.h>
#include <dev/ic/mtd803reg.h>
#include <dev/ic/mtd803var.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#define PCI_IO_MAP_REG PCI_BAR(0)
#define PCI_MEM_MAP_REG PCI_BAR(1)
struct mtd_pci_device_id {
pci_vendor_id_t vendor; /* PCI vendor ID */
pci_product_id_t product; /* PCI product ID */
};
static struct mtd_pci_device_id mtd_ids[] = {
{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 },
{ 0, 0 }
};
static int mtd_pci_match(device_t, cfdata_t, void *);
static void mtd_pci_attach(device_t, device_t, void *);
CFATTACH_DECL(mtd_pci, sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach,
NULL, NULL);
static int
mtd_pci_match(device_t parent, cfdata_t match, void *aux)
{
struct pci_attach_args *pa = aux;
struct mtd_pci_device_id *id;
for (id = mtd_ids; id->vendor != 0; ++id) {
if (PCI_VENDOR(pa->pa_id) == id->vendor &&
PCI_PRODUCT(pa->pa_id) == id->product)
return (1);
}
return (0);
}
static void
mtd_pci_attach(device_t parent, device_t self, void *aux)
{
struct pci_attach_args * const pa = aux;
struct mtd_softc * const sc = device_private(self);
pci_intr_handle_t ih;
const char *intrstring = NULL;
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh;
int io_valid, mem_valid;
char devinfo[256];
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
io_valid = (pci_mapreg_map(pa, PCI_IO_MAP_REG, PCI_MAPREG_TYPE_IO,
0, &iot, &ioh, NULL, NULL) == 0);
mem_valid = (pci_mapreg_map(pa, PCI_MEM_MAP_REG, PCI_MAPREG_TYPE_MEM
| PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh,
NULL, NULL) == 0);
if (mem_valid) {
sc->bus_tag = memt;
sc->bus_handle = memh;
} else if (io_valid) {
sc->bus_tag = iot;
sc->bus_handle = ioh;
} else {
aprint_error_dev(&sc->dev, "could not map memory or i/o space\n");
return;
}
sc->dma_tag = pa->pa_dmat;
/* Do generic attach. Seems this must be done before setting IRQ */
mtd_config(sc);
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(&sc->dev, "could not map interrupt\n");
return;
}
intrstring = pci_intr_string(pa->pa_pc, ih);
if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_irq_h, sc) == NULL) {
aprint_error_dev(&sc->dev, "could not establish interrupt");
if (intrstring != NULL)
aprint_error(" at %s", intrstring);
aprint_error("\n");
return;
} else {
aprint_normal_dev(&sc->dev, "using %s for interrupt\n",
intrstring ? intrstring : "unknown interrupt");
}
}