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hdlg_pci.c revision 1.1 
      1 /*	$NetBSD: hdlg_pci.c,v 1.1 2006/04/16 02:22:33 nonaka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, 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. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: hdlg_pci.c,v 1.1 2006/04/16 02:22:33 nonaka Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 
     45 #include <machine/autoconf.h>
     46 #include <machine/bus.h>
     47 
     48 #include <evbarm/hdl_g/hdlgreg.h>
     49 #include <evbarm/hdl_g/hdlgvar.h>
     50 
     51 #include <arm/xscale/i80321reg.h>
     52 #include <arm/xscale/i80321var.h>
     53 
     54 #include <dev/pci/pcidevs.h>
     55 #include <dev/pci/ppbreg.h>
     56 
     57 int	hdlg_pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
     58 const char *hdlg_pci_intr_string(void *, pci_intr_handle_t);
     59 const struct evcnt *hdlg_pci_intr_evcnt(void *, pci_intr_handle_t);
     60 void	*hdlg_pci_intr_establish(void *, pci_intr_handle_t,
     61 	    int, int (*func)(void *), void *);
     62 void	hdlg_pci_intr_disestablish(void *, void *);
     63 
     64 void
     65 hdlg_pci_init(pci_chipset_tag_t pc, void *cookie)
     66 {
     67 
     68 	pc->pc_intr_v = cookie;		/* the i80321 softc */
     69 	pc->pc_intr_map = hdlg_pci_intr_map;
     70 	pc->pc_intr_string = hdlg_pci_intr_string;
     71 	pc->pc_intr_evcnt = hdlg_pci_intr_evcnt;
     72 	pc->pc_intr_establish = hdlg_pci_intr_establish;
     73 	pc->pc_intr_disestablish = hdlg_pci_intr_disestablish;
     74 }
     75 
     76 int
     77 hdlg_pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
     78 {
     79 	struct i80321_softc *sc = pa->pa_pc->pc_intr_v;
     80 	uint32_t busno;
     81 	int b, d, f;
     82 
     83 	/*
     84 	 * GigaLANDISK's interrupts are routed like so:
     85 	 *
     86 	 *	XINT0	Intel i82541PI Gig-E
     87 	 *
     88 	 *	XINT1	ACARD ATP875-A
     89 	 *
     90 	 *	XINT2	NEC echi/ochi
     91 	 *
     92 	 *	XINT3	UART
     93 	 */
     94 
     95 	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
     96 	busno = PCIXSR_BUSNO(busno);
     97 	if (busno == 0xff)
     98 		busno = 0;
     99 
    100 	pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f);
    101 
    102 	/* No mappings for devices not on our bus. */
    103 	if (b != busno)
    104 		goto no_mapping;
    105 
    106 	switch (d) {
    107 	case 1:			/* i82541PI Gig-E */
    108 		if (pa->pa_intrpin == 1) {
    109 			*ihp = ICU_INT_XINT(0);
    110 			return 0;
    111 		}
    112 		goto no_mapping;
    113 
    114 	case 2:			/* ATP875-A */
    115 		if (pa->pa_intrpin == 1) {
    116 			*ihp = ICU_INT_XINT(1);
    117 			return 0;
    118 		}
    119 		goto no_mapping;
    120 
    121 	case 3:			/* echi/ochi */
    122 		switch (pa->pa_intrpin) {
    123 		case 1:	/* ohci */
    124 		case 2:	/* ohci */
    125 		case 3:	/* ehci */
    126 			*ihp = ICU_INT_XINT(2);
    127 			return 0;
    128 		}
    129 		goto no_mapping;
    130 
    131 	default:
    132  no_mapping:
    133 		printf("hdlg_pci_intr_map: no mapping for %d/%d/%d\n",
    134 		    pa->pa_bus, pa->pa_device, pa->pa_function);
    135 		return 1;
    136 	}
    137 
    138 	return 0;
    139 }
    140 
    141 const char *
    142 hdlg_pci_intr_string(void *v, pci_intr_handle_t ih)
    143 {
    144 
    145 	return i80321_irqnames[ih];
    146 }
    147 
    148 const struct evcnt *
    149 hdlg_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
    150 {
    151 
    152 	/* XXX For now. */
    153 	return NULL;
    154 }
    155 
    156 void *
    157 hdlg_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
    158     int (*func)(void *), void *arg)
    159 {
    160 
    161 	return i80321_intr_establish(ih, ipl, func, arg);
    162 }
    163 
    164 void
    165 hdlg_pci_intr_disestablish(void *v, void *cookie)
    166 {
    167 
    168 	i80321_intr_disestablish(cookie);
    169 }
    170