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90 lines
3.0 KiB
C
90 lines
3.0 KiB
C
/* $NetBSD: sbpcihb.c,v 1.3 2011/07/10 23:32:03 matt Exp $ */
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/*
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* Copyright 2000, 2001
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* Broadcom Corporation. All rights reserved.
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*
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* This software is furnished under license and may be used and copied only
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* in accordance with the following terms and conditions. Subject to these
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* conditions, you may download, copy, install, use, modify and distribute
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* modified or unmodified copies of this software in source and/or binary
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* form. No title or ownership is transferred hereby.
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*
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* 1) Any source code used, modified or distributed must reproduce and
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* retain this copyright notice and list of conditions as they appear in
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* the source file.
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*
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* 2) No right is granted to use any trade name, trademark, or logo of
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* Broadcom Corporation. Neither the "Broadcom Corporation" name nor any
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* trademark or logo of Broadcom Corporation may be used to endorse or
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* promote products derived from this software without the prior written
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* permission of Broadcom Corporation.
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*
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* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
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* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
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* FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
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* LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Driver for SB-1250 PCI Host Bridge.
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*
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* Doesn't have to do much at all.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/ppbreg.h>
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#include <dev/pci/pcidevs.h>
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#include <mips/locore.h>
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#include <mips/sibyte/include/sb1250_regs.h>
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#include <mips/sibyte/include/sb1250_scd.h>
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static int sbpcihb_match(device_t, cfdata_t, void *);
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static void sbpcihb_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(sbpcihb, 0,
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sbpcihb_match, sbpcihb_attach, NULL, NULL);
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static int
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sbpcihb_match(device_t parent, cfdata_t match, void *aux)
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{
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struct pci_attach_args *pa = aux;
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int bus, device;
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pci_decompose_tag(pa->pa_pc, pa->pa_tag, &bus, &device, NULL);
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/* Check for a vendor/device match. */
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if (bus == 0 && device == 0
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&& PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIBYTE
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&& PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIBYTE_BCM1250_PCIHB)
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return 1;
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return 0;
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}
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static void
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sbpcihb_attach(device_t parent, device_t self, void *aux)
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{
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uint64_t regval;
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bool host;
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/* Tell the user whether it's host or device mode. */
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regval = mips3_ld((void *)MIPS_PHYS_TO_KSEG0(A_SCD_SYSTEM_CFG));
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host = (regval & M_SYS_PCI_HOST) != 0;
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aprint_normal(": %s mode\n", host ? "host" : "device");
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}
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