Home | History | Annotate | Line # | Download | only in pci
tsp_pci.c revision 1.1.6.1 
      1 /* $NetBSD: tsp_pci.c,v 1.1.6.1 2000/11/20 19:57:19 bouyer Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999 by Ross Harvey.  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  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Ross Harvey.
     17  * 4. The name of Ross Harvey may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS
     21  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     22  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
     24  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  *
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 
     36 __KERNEL_RCSID(0, "$NetBSD");
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/kernel.h>
     41 #include <sys/device.h>
     42 
     43 #include <uvm/uvm_extern.h>
     44 
     45 #include <dev/pci/pcireg.h>
     46 #include <dev/pci/pcivar.h>
     47 
     48 #include <machine/autoconf.h>
     49 #include <machine/rpb.h>
     50 
     51 #include <alpha/pci/tsreg.h>
     52 #include <alpha/pci/tsvar.h>
     53 
     54 #define tsp_pci() { Generate ctags(1) key. }
     55 
     56 void		tsp_attach_hook __P((struct device *, struct device *,
     57 		    struct pcibus_attach_args *));
     58 int		tsp_bus_maxdevs __P((void *, int));
     59 pcitag_t	tsp_make_tag __P((void *, int, int, int));
     60 void		tsp_decompose_tag __P((void *, pcitag_t, int *, int *,
     61 		    int *));
     62 pcireg_t	tsp_conf_read __P((void *, pcitag_t, int));
     63 void		tsp_conf_write __P((void *, pcitag_t, int, pcireg_t));
     64 
     65 void
     66 tsp_pci_init(pc, v)
     67 	pci_chipset_tag_t pc;
     68 	void *v;
     69 {
     70 	pc->pc_conf_v = v;
     71 	pc->pc_attach_hook = tsp_attach_hook;
     72 	pc->pc_bus_maxdevs = tsp_bus_maxdevs;
     73 	pc->pc_make_tag = tsp_make_tag;
     74 	pc->pc_decompose_tag = tsp_decompose_tag;
     75 	pc->pc_conf_read = tsp_conf_read;
     76 	pc->pc_conf_write = tsp_conf_write;
     77 }
     78 
     79 void
     80 tsp_attach_hook(parent, self, pba)
     81 	struct device *parent, *self;
     82 	struct pcibus_attach_args *pba;
     83 {
     84 }
     85 
     86 int
     87 tsp_bus_maxdevs(cpv, busno)
     88 	void *cpv;
     89 	int busno;
     90 {
     91 	return 32;
     92 }
     93 
     94 pcitag_t
     95 tsp_make_tag(cpv, b, d, f)
     96 	void *cpv;
     97 	int b, d, f;
     98 {
     99 	return b << 16 | d << 11 | f << 8;
    100 }
    101 
    102 void
    103 tsp_decompose_tag(cpv, tag, bp, dp, fp)
    104 	void *cpv;
    105 	pcitag_t tag;
    106 	int *bp, *dp, *fp;
    107 {
    108 	if (bp != NULL)
    109 		*bp = (tag >> 16) & 0xff;
    110 	if (dp != NULL)
    111 		*dp = (tag >> 11) & 0x1f;
    112 	if (fp != NULL)
    113 		*fp = (tag >> 8) & 0x7;
    114 }
    115 /*
    116  * Tsunami makes this a lot easier than it used to be, automatically
    117  * generating type 0 or type 1 cycles, and quietly returning -1 with
    118  * no errors on unanswered probes.
    119  */
    120 pcireg_t
    121 tsp_conf_read(cpv, tag, offset)
    122 	void *cpv;
    123 	pcitag_t tag;
    124 	int offset;
    125 {
    126 	pcireg_t *datap, data;
    127 	struct tsp_config *pcp = cpv;
    128 
    129 	datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
    130 	alpha_mb();
    131 	data = *datap;
    132 	alpha_mb();
    133 	return data;
    134 }
    135 
    136 void
    137 tsp_conf_write(cpv, tag, offset, data)
    138 	void *cpv;
    139 	pcitag_t tag;
    140 	int offset;
    141 	pcireg_t data;
    142 {
    143 	pcireg_t *datap;
    144 	struct tsp_config *pcp = cpv;
    145 
    146 	datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
    147 	alpha_mb();
    148 	*datap = data;
    149 	alpha_mb();
    150 }
    151