xref: /netbsd-src/sys/dev/pci/dpt_pci.c (revision 481fca6e59249d8ffcf24fef7cfbe7b131bfb080)
1 /*	$NetBSD: dpt_pci.c,v 1.6 2000/06/13 13:36:50 ad Exp $	*/
2 
3 /*
4  * Copyright (c) 1999 Andrew Doran <ad@NetBSD.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  */
29 
30 /*
31  * PCI front-end for DPT EATA SCSI driver.
32  */
33 
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: dpt_pci.c,v 1.6 2000/06/13 13:36:50 ad Exp $");
36 
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/device.h>
41 #include <sys/queue.h>
42 #include <sys/proc.h>
43 
44 #include <machine/endian.h>
45 #include <machine/bus.h>
46 
47 #include <dev/scsipi/scsi_all.h>
48 #include <dev/scsipi/scsipi_all.h>
49 #include <dev/scsipi/scsiconf.h>
50 
51 #include <dev/pci/pcidevs.h>
52 #include <dev/pci/pcivar.h>
53 
54 #include <dev/ic/dptreg.h>
55 #include <dev/ic/dptvar.h>
56 
57 #define	PCI_CBMA	0x14	/* Configuration base memory address */
58 #define	PCI_CBIO	0x10	/* Configuration base I/O address */
59 
60 int	dpt_pci_match __P((struct device *, struct cfdata *, void *));
61 void	dpt_pci_attach __P((struct device *, struct device *, void *));
62 
63 struct cfattach dpt_pci_ca = {
64 	sizeof(struct dpt_softc), dpt_pci_match, dpt_pci_attach
65 };
66 
67 int
68 dpt_pci_match(parent, match, aux)
69 	struct device *parent;
70 	struct cfdata *match;
71 	void *aux;
72 {
73 	struct pci_attach_args *pa;
74 
75 	pa = (struct pci_attach_args *)aux;
76 
77 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DPT &&
78 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_SC_RAID)
79 		return (1);
80 
81 	return (0);
82 }
83 
84 void
85 dpt_pci_attach(parent, self, aux)
86 	struct device *parent;
87 	struct device *self;
88 	void *aux;
89 {
90 	struct pci_attach_args *pa;
91 	struct dpt_softc *sc;
92 	pci_chipset_tag_t pc;
93 	pci_intr_handle_t ih;
94 	bus_space_handle_t ioh;
95 	const char *intrstr;
96 	pcireg_t csr;
97 
98 	sc = (struct dpt_softc *)self;
99 	pa = (struct pci_attach_args *)aux;
100 	pc = pa->pa_pc;
101 	printf(": ");
102 
103 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &sc->sc_iot,
104 	    &ioh, NULL, NULL)) {
105 		printf("can't map i/o space\n");
106 		return;
107 	}
108 
109 	/* Need to map in by 16 registers */
110 	if (bus_space_subregion(sc->sc_iot, ioh, 16, 16, &sc->sc_ioh)) {
111 		printf("can't map i/o subregion\n");
112 		return;
113 	}
114 
115 	sc->sc_dmat = pa->pa_dmat;
116 
117 	/* Enable the device. */
118 	csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
119 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
120 		       csr | PCI_COMMAND_MASTER_ENABLE);
121 
122 	/* Map and establish the interrupt. */
123 	if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin,
124 	    pa->pa_intrline, &ih)) {
125 		printf("can't map interrupt\n");
126 		return;
127 	}
128 	intrstr = pci_intr_string(pc, ih);
129 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, dpt_intr, sc);
130 	if (sc->sc_ih == NULL) {
131 		printf("can't establish interrupt");
132 		if (intrstr != NULL)
133 			printf(" at %s", intrstr);
134 		printf("\n");
135 		return;
136 	}
137 
138 	/* Read the EATA configuration */
139 	if (dpt_readcfg(sc)) {
140 		printf("%s: readcfg failed - see dpt(4)\n",
141 		    sc->sc_dv.dv_xname);
142 		return;
143 	}
144 
145 	/* Now attach to the bus-independent code */
146 	dpt_init(sc, intrstr);
147 }
148