1 /* $NetBSD: if_tlp_ap.c,v 1.16 2023/12/20 04:30:27 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Atsushi Onoe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: if_tlp_ap.c,v 1.16 2023/12/20 04:30:27 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/device.h>
37 #include <sys/errno.h>
38 #include <sys/ioctl.h>
39 #include <sys/socket.h>
40 #include <sys/syslog.h>
41 #include <sys/systm.h>
42
43 #include <net/if.h>
44 #include <net/if_dl.h>
45 #include <net/if_media.h>
46 #include <net/if_ether.h>
47
48 #include <machine/bus.h>
49 #include <machine/intr.h>
50
51 #include <mips/cache.h>
52
53 #include <dev/mii/miivar.h>
54 #include <dev/mii/mii_bitbang.h>
55
56 #include <dev/ic/tulipreg.h>
57 #include <dev/ic/tulipvar.h>
58
59 #include <newsmips/apbus/apbusvar.h>
60
61 #define TLP_AP_ROM 0x00000000 /* AProm entry address */
62 #define TLP_AP_CFG 0x00040000 /* PCI configuration registers */
63 #define TLP_AP_CFG_CFID 0x00 /* Identification */
64 #define TLP_AP_CFG_CFCS 0x04 /* Command and status */
65 #define TLP_AP_CFG_CFRV 0x08 /* Revision */
66 #define TLP_AP_CFG_CFLT 0x0c /* Latency timer */
67 #define TLP_AP_CFG_CBIO 0x10 /* Base I/O address */
68 #define TLP_AP_CFG_CBMA 0x14 /* Base memory address */
69 #define TLP_AP_CFG_CFIT 0x3c /* Interrupt */
70 #define TLP_AP_CSR 0x00080000 /* CSR base address */
71 #define TLP_AP_RST 0x00100000 /* Board Reset */
72
73
74 struct tulip_ap_softc {
75 struct tulip_softc sc_tulip; /* real Tulip softc */
76 bus_space_tag_t sc_cfst;
77 bus_space_handle_t sc_cfsh;
78 };
79
80 static int tlp_ap_match(device_t, cfdata_t, void *);
81 static void tlp_ap_attach(device_t, device_t, void *);
82
83 CFATTACH_DECL_NEW(tlp_ap, sizeof(struct tulip_ap_softc),
84 tlp_ap_match, tlp_ap_attach, NULL, NULL);
85
86 static void tlp_ap_preinit(struct tulip_softc *);
87 static void tlp_ap_tmsw_init(struct tulip_softc *);
88 static void tlp_ap_getmedia(struct tulip_softc *, struct ifmediareq *);
89 static int tlp_ap_setmedia(struct tulip_softc *);
90
91 const struct tulip_mediasw tlp_ap_mediasw = {
92 tlp_ap_tmsw_init, tlp_ap_getmedia, tlp_ap_setmedia
93 };
94
95 static int
tlp_ap_match(device_t parent,cfdata_t cf,void * aux)96 tlp_ap_match(device_t parent, cfdata_t cf, void *aux)
97 {
98 struct apbus_attach_args *apa = aux;
99
100 if (strcmp(apa->apa_name, "cbasetx") != 0)
101 return 0;
102
103 return 1;
104 }
105
106 /*
107 * Install interface into kernel networking data structures
108 */
109 static void
tlp_ap_attach(device_t parent,device_t self,void * aux)110 tlp_ap_attach(device_t parent, device_t self, void *aux)
111 {
112 struct tulip_ap_softc *psc = device_private(self);
113 struct tulip_softc *sc = &psc->sc_tulip;
114 struct apbus_attach_args *apa = aux;
115 uint8_t enaddr[ETHER_ADDR_LEN];
116 u_int intrmask;
117 int i;
118
119 sc->sc_dev = self;
120
121 aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);
122
123 /* PCI configuration register */
124 psc->sc_cfst = 0;
125 psc->sc_cfsh = apa->apa_hwbase + TLP_AP_CFG;
126 sc->sc_devno = apa->apa_slotno;
127 sc->sc_rev = bus_space_read_4(psc->sc_cfst, psc->sc_cfsh,
128 TLP_AP_CFG_CFRV);
129 switch (bus_space_read_4(psc->sc_cfst, psc->sc_cfsh, TLP_AP_CFG_CFID)) {
130 case 0x00091011:
131 if (sc->sc_rev >= 0x20)
132 sc->sc_chip = TULIP_CHIP_21140A;
133 else
134 sc->sc_chip = TULIP_CHIP_21140;
135 break;
136 default:
137 aprint_error(": unable to handle your board\n");
138 return;
139 }
140
141 aprint_normal(": %s Ethernet, pass %d.%d\n",
142 tlp_chip_name(sc->sc_chip),
143 (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf);
144
145 /* CSR */
146 sc->sc_st = 0;
147 sc->sc_sh = apa->apa_hwbase + TLP_AP_CSR;
148 sc->sc_dmat = apbus_dmatag_init(apa);
149 if (sc->sc_dmat == NULL) {
150 aprint_error_dev(self, "cannot allocate memory\n");
151 return;
152 }
153
154 /*
155 * Initialize bus specific parameters.
156 */
157 if (mips_cache_info.mci_sdcache_line_size > 0)
158 sc->sc_cacheline = mips_cache_info.mci_sdcache_line_size / 4;
159 else if (mips_cache_info.mci_pdcache_line_size > 0)
160 sc->sc_cacheline = mips_cache_info.mci_pdcache_line_size / 4;
161 else
162 sc->sc_cacheline = 4;
163 sc->sc_maxburst = sc->sc_cacheline; /* XXX */
164 sc->sc_regshift = 3;
165 sc->sc_flags |= TULIPF_DBO | TULIPF_BLE; /* Big Endian BUS */
166 sc->sc_flags |= TULIPF_ENABLED; /* No Power Mgmt */
167
168 /*
169 * Reset hardware.
170 */
171 bus_space_write_4(0, apa->apa_hwbase + TLP_AP_RST, 0, 1);
172 delay(100);
173
174 /*
175 * Initialize PCI configuration register
176 */
177 bus_space_write_4(psc->sc_cfst, psc->sc_cfsh,
178 TLP_AP_CFG_CFCS, 0x00000005); /* Master, IO */
179 bus_space_write_4(psc->sc_cfst, psc->sc_cfsh,
180 TLP_AP_CFG_CFLT, 0x00000100);
181 bus_space_write_4(psc->sc_cfst, psc->sc_cfsh,
182 TLP_AP_CFG_CBIO, MIPS_KSEG1_TO_PHYS(sc->sc_sh));
183 bus_space_write_4(psc->sc_cfst, psc->sc_cfsh,
184 TLP_AP_CFG_CFIT, 0x00000101);
185
186 /*
187 * Initialize general purpose port register.
188 */
189 TULIP_WRITE(sc, CSR_GPP, GPP_GPC | 0xc0); /* read */
190 TULIP_WRITE(sc, CSR_GPP, 0x40); /* dipsw port on */
191 i = TULIP_READ(sc, CSR_GPP) & GPP_MD; /* dipsw contents */
192 TULIP_WRITE(sc, CSR_GPP, 0xc0); /* dipsw port off */
193 TULIP_WRITE(sc, CSR_GPP, GPP_GPC | 0xcf); /* read write */
194 if (sc->sc_maxburst == 16) {
195 TULIP_WRITE(sc, CSR_GPP, 0x8f); /* 16word burst */
196 TULIP_WRITE(sc, CSR_GPP, 0xcf);
197 } else {
198 TULIP_WRITE(sc, CSR_GPP, 0x8e); /* 8word burst */
199 TULIP_WRITE(sc, CSR_GPP, 0xce);
200 }
201 TULIP_WRITE(sc, CSR_GPP, GPP_GPC | 0xcf); /* read write */
202 TULIP_WRITE(sc, CSR_GPP, 0xc3); /* mask abort/DMA err */
203 TULIP_WRITE(sc, CSR_GPP, 0xcf); /* mask abort/DMA err */
204
205 if (tlp_read_srom(sc) == 0) {
206 aprint_error_dev(self, "srom read failed\n");
207 free(sc->sc_dmat, M_DEVBUF);
208 return;
209 }
210 for (i = 0; i < ETHER_ADDR_LEN; i++)
211 enaddr[i] = sc->sc_srom[0x11 + i * 2];
212
213 sc->sc_mediasw = &tlp_ap_mediasw;
214
215 /*
216 * Finish off the attach.
217 */
218 tlp_attach(sc, enaddr);
219
220 intrmask = SLOTTOMASK(apa->apa_slotno);
221 apbus_intr_establish(0, /* interrupt level (0 or 1) */
222 intrmask,
223 0, /* priority */
224 tlp_intr, sc, device_xname(self), apa->apa_ctlnum);
225 }
226
227 static void
tlp_ap_preinit(struct tulip_softc * sc)228 tlp_ap_preinit(struct tulip_softc *sc)
229 {
230
231 sc->sc_opmode |= OPMODE_MBO | OPMODE_SCR | OPMODE_PCS | OPMODE_HBD |
232 OPMODE_PS;
233 TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode);
234 }
235
236 static void
tlp_ap_tmsw_init(struct tulip_softc * sc)237 tlp_ap_tmsw_init(struct tulip_softc *sc)
238 {
239 struct ifnet *ifp = &sc->sc_ethercom.ec_if;
240 struct mii_data *mii = &sc->sc_mii;
241
242 sc->sc_preinit = tlp_ap_preinit;
243
244 mii->mii_ifp = ifp;
245 mii->mii_readreg = NULL;
246 mii->mii_writereg = NULL;
247 mii->mii_statchg = sc->sc_statchg;
248 ifmedia_init(&mii->mii_media, 0, tlp_mediachange, tlp_mediastatus);
249 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_100_TX, 0, NULL);
250 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_100_TX | IFM_FDX, 0,
251 NULL);
252 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_100_TX);
253 }
254
255 static void
tlp_ap_getmedia(struct tulip_softc * sc,struct ifmediareq * ifmr)256 tlp_ap_getmedia(struct tulip_softc *sc, struct ifmediareq *ifmr)
257 {
258 struct ifnet *ifp = &sc->sc_ethercom.ec_if;
259
260 ifmr->ifm_status = IFM_AVALID;
261 if (ifp->if_flags & IFF_RUNNING)
262 ifmr->ifm_status |= IFM_ACTIVE;
263 ifmr->ifm_active = sc->sc_mii.mii_media_active;
264 }
265
266 static int
tlp_ap_setmedia(struct tulip_softc * sc)267 tlp_ap_setmedia(struct tulip_softc *sc)
268 {
269 struct ifnet *ifp = &sc->sc_ethercom.ec_if;
270
271 sc->sc_mii.mii_media_active = sc->sc_mii.mii_media.ifm_cur->ifm_media;
272
273 if (ifp->if_flags & IFF_UP)
274 tlp_idle(sc, OPMODE_ST | OPMODE_SR);
275 if (sc->sc_mii.mii_media_active & IFM_FDX)
276 sc->sc_opmode |= OPMODE_FD;
277 else
278 sc->sc_opmode &= ~OPMODE_FD;
279 if (ifp->if_flags & IFF_UP)
280 TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode);
281 return 0;
282 }
283