d8e1a7b61a
where it looks straightforward, and pci_aprint_devinfo_fancy in a few
others where drivers want to supply their own device names instead
of the pcidevs generated one. More complicated cases, where names
are composed at runtime, are left alone for now. It certainly makes
sense to simplify the drivers here rather than inventing a catch-all API.
This should serve as as example for new drivers, and also ensure
consistent output in the AB_QUIET ("boot -q") case. Also, it avoids
excessive stack usage where drivers attach child devices because the
buffer for the device name is not kept on the local stack anymore.
159 lines
4.8 KiB
C
159 lines
4.8 KiB
C
/* $NetBSD: chipsfb.c,v 1.31 2012/01/30 19:41:18 drochner Exp $ */
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/*
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* Copyright (c) 2006 Michael Lorenz
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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, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* A console driver for Chips & Technologies 65550 graphics controllers
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* tested on macppc only so far
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: chipsfb.c,v 1.31 2012/01/30 19:41:18 drochner Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/kauth.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/pci/pciio.h>
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#include <dev/pci/wsdisplay_pci.h>
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#include <dev/ic/ct65550reg.h>
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#include <dev/ic/ct65550var.h>
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#include "opt_wsemul.h"
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#include "opt_chipsfb.h"
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struct chipsfb_pci_softc {
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struct chipsfb_softc sc_chips;
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pci_chipset_tag_t sc_pc;
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pcitag_t sc_pcitag;
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};
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static int chipsfb_pci_match(device_t, cfdata_t, void *);
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static void chipsfb_pci_attach(device_t, device_t, void *);
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static int chipsfb_pci_ioctl(void *, void *, u_long, void *, int,
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struct lwp *);
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CFATTACH_DECL_NEW(chipsfb_pci, sizeof(struct chipsfb_pci_softc),
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chipsfb_pci_match, chipsfb_pci_attach, NULL, NULL);
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static int
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chipsfb_pci_match(device_t parent, cfdata_t match, void *aux)
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{
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const struct pci_attach_args *pa = (const struct pci_attach_args *)aux;
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if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY ||
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PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA)
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return 0;
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if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CHIPS) &&
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(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CHIPS_65550))
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return 100;
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if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CHIPS) &&
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(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CHIPS_65554))
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return 100;
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return 0;
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}
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static void
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chipsfb_pci_attach(device_t parent, device_t self, void *aux)
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{
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struct chipsfb_pci_softc *scp = device_private(self);
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struct chipsfb_softc *sc = &scp->sc_chips;
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const struct pci_attach_args *pa = aux;
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pcireg_t screg;
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scp->sc_pc = pa->pa_pc;
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scp->sc_pcitag = pa->pa_tag;
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sc->sc_dev = self;
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screg = pci_conf_read(scp->sc_pc, scp->sc_pcitag,
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PCI_COMMAND_STATUS_REG);
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screg |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE;
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pci_conf_write(scp->sc_pc, scp->sc_pcitag, PCI_COMMAND_STATUS_REG,
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screg);
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pci_aprint_devinfo(pa, NULL);
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sc->sc_memt = pa->pa_memt;
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sc->sc_iot = pa->pa_iot;
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sc->sc_ioctl = chipsfb_pci_ioctl;
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sc->sc_mmap = NULL;
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/* the framebuffer */
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sc->sc_fb = (pci_conf_read(scp->sc_pc, scp->sc_pcitag, PCI_BAR0) &
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~PCI_MAPREG_MEM_TYPE_MASK);
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sc->sc_fbsize = 0x01000000; /* 16MB aperture */
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if (bus_space_map(sc->sc_memt, sc->sc_fb, 0x400000,
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BUS_SPACE_MAP_LINEAR, &sc->sc_fbh)) {
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aprint_error_dev(sc->sc_dev,
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"failed to map the frame buffer.\n");
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}
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if (bus_space_map(sc->sc_memt, sc->sc_fb + CT_OFF_BITBLT, 0x20000,
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BUS_SPACE_MAP_LINEAR, &sc->sc_mmregh)) {
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aprint_error_dev(sc->sc_dev,
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"failed to map MMIO registers.\n");
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}
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/* IO-mapped registers */
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if (bus_space_map(sc->sc_iot, 0x0, 0x400, 0, &sc->sc_ioregh) != 0) {
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aprint_error_dev(sc->sc_dev, "failed to map IO registers.\n");
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}
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sc->memsize = chipsfb_probe_vram(sc);
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chipsfb_do_attach(sc);
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}
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static int
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chipsfb_pci_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
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struct lwp *l)
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{
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struct vcons_data *vd = v;
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struct chipsfb_softc *sc = vd->cookie;
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struct chipsfb_pci_softc *scp = vd->cookie;
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switch (cmd) {
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/* PCI config read/write passthrough. */
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case PCI_IOC_CFGREAD:
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case PCI_IOC_CFGWRITE:
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return pci_devioctl(scp->sc_pc, scp->sc_pcitag,
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cmd, data, flag, l);
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case WSDISPLAYIO_GET_BUSID:
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return wsdisplayio_busid_pci(sc->sc_dev, scp->sc_pc,
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scp->sc_pcitag, data);
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}
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return EPASSTHROUGH;
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}
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