From 013507e321b972f2b026766a281aaf0a9d13c97c Mon Sep 17 00:00:00 2001 From: drochner Date: Sun, 22 Mar 1998 15:16:18 +0000 Subject: [PATCH] PCI frontend for sys/dev/ic/vga.c --- sys/dev/pci/vga_pci.c | 141 +++++++++++++++++++++++++++++++++++++++ sys/dev/pci/vga_pcivar.h | 37 ++++++++++ 2 files changed, 178 insertions(+) create mode 100644 sys/dev/pci/vga_pci.c create mode 100644 sys/dev/pci/vga_pcivar.h diff --git a/sys/dev/pci/vga_pci.c b/sys/dev/pci/vga_pci.c new file mode 100644 index 000000000000..2f0f66f351ed --- /dev/null +++ b/sys/dev/pci/vga_pci.c @@ -0,0 +1,141 @@ +/* $NetBSD: vga_pci.c,v 1.1 1998/03/22 15:16:18 drochner Exp $ */ + +/* + * Copyright (c) 1995, 1996 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include +#include + +#include +#include + +struct vga_pci_softc { + struct device sc_dev; + + pcitag_t sc_pcitag; /* PCI tag, in case we need it. */ +#if 0 + struct vga_config *sc_vc; /* VGA configuration */ +#endif +}; + +#ifdef __BROKEN_INDIRECT_CONFIG +int vga_pci_match __P((struct device *, void *, void *)); +#else +int vga_pci_match __P((struct device *, struct cfdata *, void *)); +#endif +void vga_pci_attach __P((struct device *, struct device *, void *)); + +struct cfattach vga_pci_ca = { + sizeof(struct vga_pci_softc), vga_pci_match, vga_pci_attach, +}; + +int +vga_pci_match(parent, match, aux) + struct device *parent; +#ifdef __BROKEN_INDIRECT_CONFIG + void *match; +#else + struct cfdata *match; +#endif + void *aux; +{ + struct pci_attach_args *pa = aux; + int potential; + + potential = 0; + + /* + * If it's prehistoric/vga or display/vga, we might match. + * For the console device, this is jut a sanity check. + */ + if (PCI_CLASS(pa->pa_class) == PCI_CLASS_PREHISTORIC && + PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_PREHISTORIC_VGA) + potential = 1; + if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY && + PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_DISPLAY_VGA) + potential = 1; + + if (!potential) + return (0); + + /* check whether it is disabled by firmware */ + if ((pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) + & (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE)) + != (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE)) + return (0); + + /* If it's the console, we have a winner! */ + if (vga_is_console(pa->pa_iot, WSDISPLAY_TYPE_PCIVGA)) + return (1); + + /* + * If we might match, make sure that the card actually looks OK. + */ + if (!vga_common_probe(pa->pa_iot, pa->pa_memt)) + return (0); + + return (1); +} + +void +vga_pci_attach(parent, self, aux) + struct device *parent, *self; + void *aux; +{ + struct pci_attach_args *pa = aux; + struct vga_pci_softc *sc = (struct vga_pci_softc *)self; + char devinfo[256]; + + sc->sc_pcitag = pa->pa_tag; + + pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); + printf(": %s (rev. 0x%02x)\n", devinfo, + PCI_REVISION(pa->pa_class)); + + vga_common_attach(self, pa->pa_iot, pa->pa_memt, + WSDISPLAY_TYPE_PCIVGA); +} + +int +vga_pci_cnattach(iot, memt, pc, bus, device, function) + bus_space_tag_t iot, memt; + pci_chipset_tag_t pc; + int bus, device, function; +{ + return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_PCIVGA, 0)); +} diff --git a/sys/dev/pci/vga_pcivar.h b/sys/dev/pci/vga_pcivar.h new file mode 100644 index 000000000000..22d3cd1c1a94 --- /dev/null +++ b/sys/dev/pci/vga_pcivar.h @@ -0,0 +1,37 @@ +/* $NetBSD: vga_pcivar.h,v 1.1 1998/03/22 15:16:19 drochner Exp $ */ + +/* + * Copyright (c) 1995, 1996 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#define DEVICE_IS_VGA_PCI(class, id) \ + (((PCI_CLASS(class) == PCI_CLASS_DISPLAY && \ + PCI_SUBCLASS(class) == PCI_SUBCLASS_DISPLAY_VGA) || \ + (PCI_CLASS(class) == PCI_CLASS_PREHISTORIC && \ + PCI_SUBCLASS(class) == PCI_SUBCLASS_PREHISTORIC_VGA)) ? 1 : 0) + +int vga_pci_cnattach __P((bus_space_tag_t, bus_space_tag_t, + pci_chipset_tag_t, int, int, int));