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Annotation of sys/arch/alpha/pci/pci_machdep.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: pci_machdep.c,v 1.16 2002/03/14 01:26:27 millert Exp $        */
        !             2: /*     $NetBSD: pci_machdep.c,v 1.7 1996/11/19 04:57:32 cgd Exp $      */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Author: Chris G. Demetriou
        !             9:  *
        !            10:  * Permission to use, copy, modify and distribute this software and
        !            11:  * its documentation is hereby granted, provided that both the copyright
        !            12:  * notice and this permission notice appear in all copies of the
        !            13:  * software, derivative works or modified versions, and any portions
        !            14:  * thereof, and that both notices appear in supporting documentation.
        !            15:  *
        !            16:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            17:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
        !            18:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            19:  *
        !            20:  * Carnegie Mellon requests users of this software to return to
        !            21:  *
        !            22:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            23:  *  School of Computer Science
        !            24:  *  Carnegie Mellon University
        !            25:  *  Pittsburgh PA 15213-3890
        !            26:  *
        !            27:  * any improvements or extensions that they make and grant Carnegie the
        !            28:  * rights to redistribute these changes.
        !            29:  */
        !            30:
        !            31: /*
        !            32:  * Machine-specific functions for PCI autoconfiguration.
        !            33:  */
        !            34:
        !            35: #include <sys/types.h>
        !            36: #include <sys/param.h>
        !            37: #include <sys/time.h>
        !            38: #include <sys/systm.h>
        !            39: #include <sys/errno.h>
        !            40: #include <sys/device.h>
        !            41: #include <uvm/uvm_extern.h>
        !            42: #include <machine/cpu.h>
        !            43: #include <sys/sysctl.h>
        !            44:
        !            45: #include <dev/isa/isavar.h>
        !            46: #include <dev/pci/pcireg.h>
        !            47: #include <dev/pci/pcivar.h>
        !            48: #include <dev/pci/pcidevs.h>
        !            49:
        !            50: #include "vga.h"
        !            51: #if NVGA_PCI
        !            52: #include <dev/pci/vga_pcivar.h>
        !            53: #endif
        !            54:
        !            55: #include "tga.h"
        !            56: #if NTGA
        !            57: #include <dev/pci/tgavar.h>
        !            58: #endif
        !            59:
        !            60: struct alpha_pci_chipset *alpha_pci_chipset;
        !            61:
        !            62: void
        !            63: pci_display_console(iot, memt, pc, bus, device, function)
        !            64:        bus_space_tag_t iot, memt;
        !            65:        pci_chipset_tag_t pc;
        !            66:        int bus, device, function;
        !            67: {
        !            68:        pcitag_t tag;
        !            69:        pcireg_t id, class;
        !            70:        int match;
        !            71: #if NVGA_PCI || NTGA
        !            72:        int nmatch;
        !            73: #endif
        !            74:        int (*fn)(bus_space_tag_t, bus_space_tag_t, pci_chipset_tag_t,
        !            75:            int, int, int);
        !            76:
        !            77:        tag = pci_make_tag(pc, bus, device, function);
        !            78:        id = pci_conf_read(pc, tag, PCI_ID_REG);
        !            79:        if (id == 0 || id == 0xffffffff)
        !            80:                panic("pci_display_console: no device at %d/%d/%d",
        !            81:                    bus, device, function);
        !            82:        class = pci_conf_read(pc, tag, PCI_CLASS_REG);
        !            83:
        !            84:        match = 0;
        !            85:        fn = NULL;
        !            86:
        !            87: #if NVGA_PCI
        !            88:        nmatch = DEVICE_IS_VGA_PCI(class, id);
        !            89:        if (nmatch > match) {
        !            90:                match = nmatch;
        !            91:                fn = vga_pci_cnattach;
        !            92:        }
        !            93: #endif
        !            94: #if NTGA
        !            95:        nmatch = DEVICE_IS_TGA(class, id);
        !            96:        if (nmatch > match) {
        !            97:                match = nmatch;
        !            98:                fn = tga_cnattach;
        !            99:        }
        !           100: #endif
        !           101:
        !           102:        if (fn != NULL)
        !           103:                (*fn)(iot, memt, pc, bus, device, function);
        !           104:        else
        !           105:                panic("pci_display_console: unconfigured device at %d/%d/%d",
        !           106:                    bus, device, function);
        !           107: }
        !           108:
        !           109: int
        !           110: alpha_sysctl_chipset(int *name, u_int namelen, char *where, size_t *sizep)
        !           111: {
        !           112:        if (namelen != 1)
        !           113:                return (ENOTDIR);
        !           114:
        !           115:        if (alpha_pci_chipset == NULL)
        !           116:                return (EOPNOTSUPP);
        !           117:
        !           118:        switch (name[0]) {
        !           119:        case CPU_CHIPSET_TYPE:
        !           120:                return (sysctl_rdstring(where, sizep, NULL,
        !           121:                    alpha_pci_chipset->pc_name));
        !           122:        case CPU_CHIPSET_BWX:
        !           123:                return (sysctl_rdint(where, sizep, NULL,
        !           124:                    alpha_pci_chipset->pc_bwx));
        !           125:        case CPU_CHIPSET_MEM:
        !           126:                return (sysctl_rdquad(where, sizep, NULL,
        !           127:                    alpha_pci_chipset->pc_mem));
        !           128:        case CPU_CHIPSET_DENSE:
        !           129:                return (sysctl_rdquad(where, sizep, NULL,
        !           130:                    alpha_pci_chipset->pc_dense));
        !           131:        case CPU_CHIPSET_PORTS:
        !           132:                return (sysctl_rdquad(where, sizep, NULL,
        !           133:                    alpha_pci_chipset->pc_ports));
        !           134:        case CPU_CHIPSET_HAE_MASK:
        !           135:                return (sysctl_rdquad(where, sizep, NULL,
        !           136:                    alpha_pci_chipset->pc_hae_mask));
        !           137:        default:
        !           138:                return (EOPNOTSUPP);
        !           139:        }
        !           140:        /* NOTREACHED */
        !           141: }