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b7e626109c
The glue layer provides the necessary function so that the Tsi148 driver in the BSP can use the PCI functionality from libbsd.
146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2022 embedded brains GmbH (http://www.embedded-brains.de)
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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 COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY 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 BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/rtems-bsd-kernel-space.h>
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#include <bsp.h>
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#ifdef LIBBSP_POWERPC_QORIQ_BSP_H
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#include <bsp/VMEConfig.h>
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <stdio.h>
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struct tsi148 {
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device_t dev;
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int mem_rid;
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struct resource *mem_res;
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int irq_rid;
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struct resource *irq_res;
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void *irq_cookie;
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};
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static void
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tsi148_intr(void *arg)
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{
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struct tsi148 *sc;
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sc = arg;
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/*
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* Note: This interrupt is never used. It would be used in case of MSIs.
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* But the Tsi148 can't generate them. So this interrupt must never
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* happen.
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*/
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puts("tsi148_intr: Unexpected interrupt. Should never happen.\n");
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}
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static int
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tsi148_probe(device_t dev)
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{
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if (pci_get_devid(dev) == 0x014810e3) {
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device_set_desc(dev, "Tundra Tsi148 PCI-VME bridge");
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return (BUS_PROBE_GENERIC);
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}
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return (ENXIO);
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}
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static int
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tsi148_attach(device_t dev)
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{
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struct tsi148 *sc;
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if (bsp_vme_pcie_base_address != 0) {
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puts("tsi148: Another instance is already attached.\n");
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return (ENXIO);
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}
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sc = device_get_softc(dev);
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sc->dev = dev;
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sc->mem_rid = PCIR_BAR(0);
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sc->mem_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
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&sc->mem_rid, RF_ACTIVE);
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if (sc->mem_res == NULL) {
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return (ENOMEM);
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}
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sc->irq_rid = 0;
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sc->irq_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
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&sc->irq_rid, RF_SHAREABLE | RF_ACTIVE);
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if (sc->irq_res == NULL) {
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return (ENOMEM);
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}
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bus_setup_intr(sc->dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
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NULL, tsi148_intr, sc, &sc->irq_cookie);
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if (sc->irq_cookie == NULL) {
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return (ENOMEM);
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}
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bsp_vme_pcie_base_address = sc->mem_res->r_bushandle;
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BSP_vme_config();
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return 0;
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}
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static int
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tsi148_detach(device_t dev)
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{
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BSD_ASSERT(0);
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return (ENXIO);
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}
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static device_method_t tsi148_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, tsi148_probe),
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DEVMETHOD(device_attach, tsi148_attach),
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DEVMETHOD(device_detach, tsi148_detach),
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DEVMETHOD_END
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};
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static driver_t tsi148_driver = {
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"tsi148",
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tsi148_methods,
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sizeof(struct tsi148),
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};
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static devclass_t tsi148_devclass;
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DRIVER_MODULE(tsi148, pci, tsi148_driver, tsi148_devclass, NULL, 0);
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#endif /* LIBBSP_POWERPC_QORIQ_BSP_H */
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