Home | History | Annotate | Line # | Download | only in tlsb 
      1 /* $NetBSD: kftxx.c,v 1.19 2021/08/07 16:18:41 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1997 by Matthew Jacob
      5  * NASA AMES Research Center.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice immediately at the beginning of the file, without modification,
     13  *    this list of conditions, and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of the author 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 THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     24  * ANY 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  * KFTIA and KFTHA Bus Adapter Node for I/O hoses
     35  * found on AlphaServer 8200 and 8400 systems.
     36  *
     37  * i.e., handler for all TLSB I/O nodes.
     38  */
     39 
     40 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     41 
     42 __KERNEL_RCSID(0, "$NetBSD: kftxx.c,v 1.19 2021/08/07 16:18:41 thorpej Exp $");
     43 
     44 #include <sys/param.h>
     45 #include <sys/systm.h>
     46 #include <sys/device.h>
     47 
     48 #include <machine/autoconf.h>
     49 #include <machine/rpb.h>
     50 #include <machine/pte.h>
     51 
     52 #include <alpha/tlsb/tlsbreg.h>
     53 #include <alpha/tlsb/tlsbvar.h>
     54 #include <alpha/tlsb/kftxxreg.h>
     55 #include <alpha/tlsb/kftxxvar.h>
     56 #include <alpha/pci/dwlpxvar.h>
     57 
     58 struct kft_softc {
     59 	device_t	sc_dev;
     60 	int		sc_node;	/* TLSB node */
     61 	uint16_t	sc_dtype;	/* device type */
     62 };
     63 
     64 #define KV(_addr)	((void *)ALPHA_PHYS_TO_K0SEG((_addr)))
     65 
     66 static int	kftmatch(device_t, cfdata_t, void *);
     67 static void	kftattach(device_t, device_t, void *);
     68 
     69 CFATTACH_DECL_NEW(kft, sizeof(struct kft_softc),
     70     kftmatch, kftattach, NULL, NULL);
     71 
     72 static int	kftprint(void *, const char *);
     73 
     74 static int
     75 kftprint(void *aux, const char *pnp)
     76 {
     77 	register struct kft_dev_attach_args *ka = aux;
     78 	if (pnp)
     79 		 aprint_normal("%s at %s", ka->ka_name, pnp);
     80 	aprint_normal(" hose %d", ka->ka_hosenum);
     81 	return (UNCONF);
     82 }
     83 
     84 static int
     85 kftmatch(device_t parent, cfdata_t cf, void *aux)
     86 {
     87 	struct tlsb_dev_attach_args *ta = aux;
     88 	if (TLDEV_ISIOPORT(ta->ta_dtype))
     89 		return (1);
     90 	return (0);
     91 }
     92 
     93 static void
     94 kftattach(device_t parent, device_t self, void *aux)
     95 {
     96 	struct tlsb_dev_attach_args *ta = aux;
     97 	struct kft_softc *sc = device_private(self);
     98 	struct kft_dev_attach_args ka;
     99 	int hoseno;
    100 
    101 	sc->sc_dev = self;
    102 	sc->sc_node = ta->ta_node;
    103 	sc->sc_dtype = ta->ta_dtype;
    104 
    105 	aprint_normal("\n");
    106 
    107 	for (hoseno = 0; hoseno < MAXHOSE; hoseno++) {
    108 		uint32_t value =
    109 		    TLSB_GET_NODEREG(sc->sc_node, KFT_IDPNSEX(hoseno));
    110 		if (value & 0x0E000000) {
    111 			aprint_error_dev(self, "Hose %d IDPNSE has %x\n",
    112 			    hoseno, value);
    113 			continue;
    114 		}
    115 		if ((value & 0x1) != 0x0) {
    116 			aprint_error_dev(self,
    117 			    "Hose %d has a Bad Cable (0x%x)\n", hoseno, value);
    118 			continue;
    119 		}
    120 		if ((value & 0x6) != 0x6) {
    121 			if (value)
    122 				aprint_error_dev(self,
    123 				    "Hose %d is missing PWROK (0x%x)\n",
    124 				    hoseno, value);
    125 			continue;
    126 		}
    127 		ka.ka_name = "dwlpx";
    128 		ka.ka_node = sc->sc_node;
    129 		ka.ka_dtype = sc->sc_dtype;
    130 		ka.ka_hosenum = hoseno;
    131 		config_found(self, &ka, kftprint, CFARGS_NONE);
    132 	}
    133 }
    134