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      1 /*	$NetBSD: pci_at_mainbus.c,v 1.11 2022/03/31 19:30:17 pgoyette Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: pci_at_mainbus.c,v 1.11 2022/03/31 19:30:17 pgoyette Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/conf.h>
     33 #include <sys/device.h>
     34 #include <sys/mbuf.h>
     35 #include <sys/stat.h>
     36 #include <sys/bus.h>
     37 
     38 #include <dev/pci/pcivar.h>
     39 #include <machine/bus_private.h>
     40 
     41 #include "ioconf.c"
     42 
     43 #include <rump-sys/kern.h>
     44 #include <rump-sys/vfs.h>
     45 
     46 #include "pci_user.h"
     47 
     48 RUMP_COMPONENT(RUMP_COMPONENT_DEV)
     49 {
     50 	extern const struct cdevsw pci_cdevsw;
     51 	devmajor_t cmaj, bmaj;
     52 	int error;
     53 
     54 	bmaj = cmaj = -1;
     55 	if ((error = devsw_attach("pci", NULL, &bmaj,
     56 	    &pci_cdevsw, &cmaj)) != 0) {
     57 		printf("pci: devsw_attach failed: %d\n", error);
     58 		return;
     59 	}
     60 
     61 	config_init_component(cfdriver_ioconf_pci,
     62 	    cfattach_ioconf_pci, cfdata_ioconf_pci);
     63 
     64 	if ((error = rump_vfs_makedevnodes(S_IFCHR, "/dev/pci", '0',
     65 	    cmaj, 0, 4)) != 0)
     66 		printf("pci: failed to create /dev/pci nodes: %d\n", error);
     67 }
     68 
     69 RUMP_COMPONENT(RUMP_COMPONENT_DEV_AFTERMAINBUS)
     70 {
     71 	struct pcibus_attach_args pba;
     72 	device_t mainbus;
     73 
     74 	/* XXX: attach args should come from elsewhere */
     75 	memset(&pba, 0, sizeof(pba));
     76 	pba.pba_bus = 0;
     77 	pba.pba_iot = (bus_space_tag_t)0;
     78 	pba.pba_memt = (bus_space_tag_t)1;
     79 	pba.pba_dmat = (void *)0x20;
     80 #ifdef _LP64
     81 	pba.pba_dmat64 = (void *)0x40;
     82 #endif
     83 	pba.pba_flags = PCI_FLAGS_MEM_OKAY |
     84 	    PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
     85 
     86 #ifdef RUMPCOMP_USERFEATURE_PCI_IOSPACE
     87 	int error;
     88 
     89 	error = rumpcomp_pci_iospace_init();
     90 	if (!error) {
     91 		pba.pba_flags |= PCI_FLAGS_IO_OKAY;
     92 	} else {
     93 		aprint_error("pci: I/O space init error %d, I/O space not "
     94 		    "available\n", error);
     95 	}
     96 #endif
     97 
     98 	mainbus = device_find_by_driver_unit("mainbus", 0);
     99 	if (!mainbus)
    100 		panic("no mainbus.  use maintaxi instead?");
    101 	config_found(mainbus, &pba, pcibusprint,
    102 	    CFARGS(.iattr = "pcibus"));
    103 }
    104