1/* $NetBSD: if_esh_pci.c,v 1.32 2016/07/07 06:55:41 msaitoh Exp $ */
2
3/*
4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code contributed to The NetBSD Foundation by Kevin M. Lahey
8 * of the Numerical Aerospace Simulation Facility, NASA Ames Research
9 * Center.
10 *
11 * Partially based on a HIPPI driver written by Essential Communications
12 * Corporation.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37__KERNEL_RCSID(0, "$NetBSD: if_esh_pci.c,v 1.32 2016/07/07 06:55:41 msaitoh Exp $");
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/mbuf.h>
42#include <sys/socket.h>
43#include <sys/ioctl.h>
44#include <sys/errno.h>
45#include <sys/syslog.h>
46#include <sys/select.h>
47#include <sys/device.h>
48#include <sys/buf.h>
49#include <sys/bufq.h>
50
51#include <net/if.h>
52#include <net/if_dl.h>
53#include <net/if_hippi.h>
54#include <net/if_media.h>
55
56#include <sys/cpu.h>
57#include <sys/bus.h>
58#include <sys/intr.h>
59
60#include <dev/ic/rrunnerreg.h>
61#include <dev/ic/rrunnervar.h>
62
63#include <dev/pci/pcivar.h>
64#include <dev/pci/pcireg.h>
65#include <dev/pci/pcidevs.h>
66
67/*
68 * PCI constants.
69 * XXX These should be in a common file!
70 */
71#define PCI_CONN 0x48 /* Connector type */
72#define PCI_CBIO PCI_BAR(0) /* Configuration Base IO Address */
73
74#define MEM_MAP_REG PCI_BAR(0)
75
76static int esh_pci_match(device_t, cfdata_t, void *);
77static void esh_pci_attach(device_t, device_t, void *);
78static u_int8_t esh_pci_bist_read(struct esh_softc *);
79static void esh_pci_bist_write(struct esh_softc *, u_int8_t);
80
81
82CFATTACH_DECL_NEW(esh_pci, sizeof(struct esh_softc),
83 esh_pci_match, esh_pci_attach, NULL, NULL);
84
85static int
86esh_pci_match(device_t parent, cfdata_t match, void *aux)
87{
88 struct pci_attach_args *pa = (struct pci_attach_args *) aux;
89
90 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ESSENTIAL)
91 return 0;
92
93 switch (PCI_PRODUCT(pa->pa_id)) {
94 case PCI_PRODUCT_ESSENTIAL_RR_HIPPI:
95 case PCI_PRODUCT_ESSENTIAL_RR_GIGE:
96 break;
97 default:
98 return 0;
99 }
100 return 1;
101}
102
103static void
104esh_pci_attach(device_t parent, device_t self, void *aux)
105{
106 struct esh_softc *sc = device_private(self);
107 struct pci_attach_args *pa = aux;
108 pci_chipset_tag_t pc = pa->pa_pc;
109 pci_intr_handle_t ih;
110 const char *model;
111 const char *intrstr = NULL;
112 char intrbuf[PCI_INTRSTR_LEN];
113
114 aprint_naive(": HIPPI controller\n");
115
116 if (pci_mapreg_map(pa, MEM_MAP_REG,
117 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, &sc->sc_iot,
118 &sc->sc_ioh, NULL, NULL) != 0) {
119 aprint_error(": unable to map memory device registers\n");
120 return;
121 }
122
123 sc->sc_dev = self;
124 sc->sc_dmat = pa->pa_dmat;
125
126 switch (PCI_PRODUCT(pa->pa_id)) {
127 case PCI_PRODUCT_ESSENTIAL_RR_HIPPI:
128 model = "RoadRunner HIPPI";
129 break;
130 case PCI_PRODUCT_ESSENTIAL_RR_GIGE:
131 model = "RoadRunner Gig-E";
132 break;
133 default:
134 model = "unknown model";
135 break;
136 }
137
138 aprint_normal(": %s\n", model);
139
140 sc->sc_bist_read = esh_pci_bist_read;
141 sc->sc_bist_write = esh_pci_bist_write;
142
143 eshconfig(sc);
144
145 /* Enable the card. */
146 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
147 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
148 PCI_COMMAND_MASTER_ENABLE);
149
150 /* Map and establish the interrupt. */
151 if (pci_intr_map(pa, &ih)) {
152 aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
153 return;
154 }
155 intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
156 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, eshintr, sc);
157 if (sc->sc_ih == NULL) {
158 aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
159 if (intrstr != NULL)
160 aprint_error(" at %s", intrstr);
161 aprint_error("\n");
162 return;
163 }
164 aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
165}
166
167static u_int8_t
168esh_pci_bist_read(struct esh_softc *sc)
169{
170 bus_space_tag_t iot = sc->sc_iot;
171 bus_space_handle_t ioh = sc->sc_ioh;
172 u_int32_t pci_bist;
173
174 pci_bist = bus_space_read_4(iot, ioh, RR_PCI_BIST);
175
176 return ((u_int8_t) (pci_bist >> 24));
177}
178
179static void
180esh_pci_bist_write(struct esh_softc *sc, u_int8_t value)
181{
182 bus_space_tag_t iot = sc->sc_iot;
183 bus_space_handle_t ioh = sc->sc_ioh;
184 u_int32_t pci_bist;
185 u_int32_t new_bist;
186
187 pci_bist = bus_space_read_4(iot, ioh, RR_PCI_BIST);
188 new_bist = ((u_int32_t) value << 24) | (pci_bist & 0x00ffffff);
189
190 bus_space_write_4(iot, ioh, RR_PCI_BIST, new_bist);
191}
192