Line data Source code
1 : /* $OpenBSD: if_gem_pci.c,v 1.39 2015/11/28 09:42:10 jmatthew Exp $ */
2 : /* $NetBSD: if_gem_pci.c,v 1.1 2001/09/16 00:11:42 eeh Exp $ */
3 :
4 : /*
5 : *
6 : * Copyright (C) 2001 Eduardo Horvath.
7 : * All rights reserved.
8 : *
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 AUTHOR ``AS IS'' AND
20 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 : * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
23 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 : * SUCH DAMAGE.
30 : *
31 : */
32 :
33 : /*
34 : * PCI bindings for Sun GEM ethernet controllers.
35 : */
36 :
37 : #include <sys/param.h>
38 : #include <sys/systm.h>
39 : #include <sys/malloc.h>
40 : #include <sys/kernel.h>
41 : #include <sys/socket.h>
42 : #include <sys/errno.h>
43 : #include <sys/device.h>
44 : #include <sys/endian.h>
45 :
46 : #include <net/if.h>
47 : #include <net/if_media.h>
48 :
49 : #include <netinet/in.h>
50 : #include <netinet/if_ether.h>
51 :
52 : #include <machine/bus.h>
53 : #include <machine/intr.h>
54 :
55 : #ifdef __sparc64__
56 : #include <dev/ofw/openfirm.h>
57 : #endif
58 :
59 : #include <dev/mii/miivar.h>
60 : #include <dev/mii/mii_bitbang.h>
61 :
62 : #include <dev/ic/gemreg.h>
63 : #include <dev/ic/gemvar.h>
64 :
65 : #include <dev/pci/pcivar.h>
66 : #include <dev/pci/pcireg.h>
67 : #include <dev/pci/pcidevs.h>
68 :
69 : struct gem_pci_softc {
70 : struct gem_softc gsc_gem; /* GEM device */
71 : bus_space_tag_t gsc_memt;
72 : bus_space_handle_t gsc_memh;
73 : bus_size_t gsc_memsize;
74 : pci_chipset_tag_t gsc_pc;
75 : };
76 :
77 : int gem_match_pci(struct device *, void *, void *);
78 : void gem_attach_pci(struct device *, struct device *, void *);
79 : int gem_detach_pci(struct device *, int);
80 : int gem_pci_enaddr(struct gem_softc *, struct pci_attach_args *);
81 :
82 : struct cfattach gem_pci_ca = {
83 : sizeof(struct gem_pci_softc), gem_match_pci, gem_attach_pci,
84 : gem_detach_pci
85 : };
86 :
87 : /*
88 : * Attach routines need to be split out to different bus-specific files.
89 : */
90 :
91 : const struct pci_matchid gem_pci_devices[] = {
92 : { PCI_VENDOR_SUN, PCI_PRODUCT_SUN_ERINETWORK },
93 : { PCI_VENDOR_SUN, PCI_PRODUCT_SUN_GEMNETWORK },
94 : { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_INTREPID2_GMAC },
95 : { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_K2_GMAC },
96 : { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_PANGEA_GMAC },
97 : { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_SHASTA_GMAC },
98 : { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_UNINORTHGMAC },
99 : { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_UNINORTH2GMAC },
100 : };
101 :
102 : int
103 0 : gem_match_pci(struct device *parent, void *cf, void *aux)
104 : {
105 0 : return (pci_matchbyid((struct pci_attach_args *)aux, gem_pci_devices,
106 : nitems(gem_pci_devices)));
107 : }
108 :
109 : #define PROMHDR_PTR_DATA 0x18
110 : #define PROMDATA_PTR_VPD 0x08
111 : #define PROMDATA_DATA2 0x0a
112 :
113 : static const u_int8_t gem_promhdr[] = { 0x55, 0xaa };
114 : static const u_int8_t gem_promdat[] = {
115 : 'P', 'C', 'I', 'R',
116 : PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8,
117 : PCI_PRODUCT_SUN_GEMNETWORK & 0xff, PCI_PRODUCT_SUN_GEMNETWORK >> 8
118 : };
119 :
120 : static const u_int8_t gem_promdat2[] = {
121 : 0x18, 0x00, /* structure length */
122 : 0x00, /* structure revision */
123 : 0x00, /* interface revision */
124 : PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */
125 : PCI_CLASS_NETWORK /* class code */
126 : };
127 :
128 : int
129 0 : gem_pci_enaddr(struct gem_softc *sc, struct pci_attach_args *pa)
130 : {
131 : struct pci_vpd *vpd;
132 0 : bus_space_handle_t romh;
133 0 : bus_space_tag_t romt;
134 0 : bus_size_t romsize = 0;
135 0 : u_int8_t buf[32];
136 : pcireg_t address;
137 : int dataoff, vpdoff;
138 : int rv = -1;
139 :
140 0 : if (pci_mapreg_map(pa, PCI_ROM_REG, PCI_MAPREG_TYPE_MEM, 0,
141 : &romt, &romh, 0, &romsize, 0))
142 0 : return (-1);
143 :
144 0 : address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
145 0 : address |= PCI_ROM_ENABLE;
146 0 : pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
147 :
148 0 : bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf));
149 0 : if (bcmp(buf, gem_promhdr, sizeof(gem_promhdr)))
150 : goto fail;
151 :
152 0 : dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8);
153 0 : if (dataoff < 0x1c)
154 : goto fail;
155 :
156 0 : bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf));
157 0 : if (bcmp(buf, gem_promdat, sizeof(gem_promdat)) ||
158 0 : bcmp(buf + PROMDATA_DATA2, gem_promdat2, sizeof(gem_promdat2)))
159 : goto fail;
160 :
161 0 : vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8);
162 0 : if (vpdoff < 0x1c)
163 : goto fail;
164 :
165 0 : bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf));
166 :
167 : /*
168 : * The VPD of gem is not in PCI 2.2 standard format. The length
169 : * in the resource header is in big endian.
170 : */
171 0 : vpd = (struct pci_vpd *)(buf + 3);
172 0 : if (!PCI_VPDRES_ISLARGE(buf[0]) ||
173 0 : PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD)
174 : goto fail;
175 0 : if (vpd->vpd_key0 != 'N' || vpd->vpd_key1 != 'A')
176 : goto fail;
177 :
178 0 : bcopy(buf + 6, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN);
179 0 : rv = 0;
180 :
181 : fail:
182 0 : if (romsize != 0)
183 0 : bus_space_unmap(romt, romh, romsize);
184 :
185 0 : address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
186 0 : address &= ~PCI_ROM_ENABLE;
187 0 : pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
188 :
189 0 : return (rv);
190 0 : }
191 :
192 : void
193 0 : gem_attach_pci(struct device *parent, struct device *self, void *aux)
194 : {
195 0 : struct pci_attach_args *pa = aux;
196 0 : struct gem_pci_softc *gsc = (void *)self;
197 0 : struct gem_softc *sc = &gsc->gsc_gem;
198 0 : pci_intr_handle_t ih;
199 : #ifdef __sparc64__
200 : /* XXX the following declarations should be elsewhere */
201 : extern void myetheraddr(u_char *);
202 : #endif
203 : const char *intrstr = NULL;
204 : int type, gotenaddr = 0;
205 :
206 0 : gsc->gsc_pc = pa->pa_pc;
207 :
208 0 : if (pa->pa_memt) {
209 : type = PCI_MAPREG_TYPE_MEM;
210 0 : sc->sc_bustag = pa->pa_memt;
211 0 : } else {
212 : type = PCI_MAPREG_TYPE_IO;
213 0 : sc->sc_bustag = pa->pa_iot;
214 : }
215 :
216 0 : sc->sc_dmatag = pa->pa_dmat;
217 :
218 0 : sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */
219 :
220 0 : switch (PCI_PRODUCT(pa->pa_id)) {
221 : case PCI_PRODUCT_SUN_GEMNETWORK:
222 0 : sc->sc_variant = GEM_SUN_GEM;
223 0 : break;
224 : case PCI_PRODUCT_SUN_ERINETWORK:
225 0 : sc->sc_variant = GEM_SUN_ERI;
226 0 : break;
227 : case PCI_PRODUCT_APPLE_K2_GMAC:
228 0 : sc->sc_variant = GEM_APPLE_K2_GMAC;
229 0 : break;
230 : default:
231 0 : sc->sc_variant = GEM_APPLE_GMAC;
232 0 : }
233 :
234 : #define PCI_GEM_BASEADDR 0x10
235 0 : if (pci_mapreg_map(pa, PCI_GEM_BASEADDR, type, 0,
236 0 : &gsc->gsc_memt, &gsc->gsc_memh, NULL, &gsc->gsc_memsize, 0) != 0) {
237 0 : printf(": can't map registers\n");
238 0 : return;
239 : }
240 :
241 0 : sc->sc_bustag = gsc->gsc_memt;
242 0 : sc->sc_h1 = gsc->gsc_memh;
243 :
244 0 : if (bus_space_subregion(sc->sc_bustag, sc->sc_h1,
245 0 : GEM_PCI_BANK2_OFFSET, GEM_PCI_BANK2_SIZE, &sc->sc_h2)) {
246 0 : printf(": unable to create bank 2 subregion\n");
247 0 : bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize);
248 0 : return;
249 : }
250 :
251 0 : if (gem_pci_enaddr(sc, pa) == 0)
252 0 : gotenaddr = 1;
253 :
254 : #ifdef __sparc64__
255 : if (!gotenaddr) {
256 : if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address",
257 : sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN) <= 0)
258 : myetheraddr(sc->sc_arpcom.ac_enaddr);
259 : gotenaddr = 1;
260 : }
261 : #endif
262 : #ifdef __powerpc__
263 : if (!gotenaddr) {
264 : pci_ether_hw_addr(pa->pa_pc, sc->sc_arpcom.ac_enaddr);
265 : gotenaddr = 1;
266 : }
267 : #endif
268 :
269 0 : sc->sc_burst = 16; /* XXX */
270 :
271 0 : if (pci_intr_map(pa, &ih) != 0) {
272 0 : printf(": couldn't map interrupt\n");
273 0 : bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize);
274 0 : return;
275 : }
276 0 : intrstr = pci_intr_string(pa->pa_pc, ih);
277 0 : sc->sc_ih = pci_intr_establish(pa->pa_pc,
278 0 : ih, IPL_NET | IPL_MPSAFE, gem_intr, sc, self->dv_xname);
279 0 : if (sc->sc_ih == NULL) {
280 0 : printf(": couldn't establish interrupt");
281 0 : if (intrstr != NULL)
282 0 : printf(" at %s", intrstr);
283 0 : printf("\n");
284 0 : bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize);
285 0 : return;
286 : }
287 :
288 0 : printf(": %s", intrstr);
289 :
290 : /*
291 : * call the main configure
292 : */
293 0 : gem_config(sc);
294 0 : }
295 :
296 : int
297 0 : gem_detach_pci(struct device *self, int flags)
298 : {
299 0 : struct gem_pci_softc *gsc = (void *)self;
300 0 : struct gem_softc *sc = &gsc->gsc_gem;
301 :
302 0 : timeout_del(&sc->sc_tick_ch);
303 0 : timeout_del(&sc->sc_rx_watchdog);
304 :
305 0 : gem_unconfig(sc);
306 0 : pci_intr_disestablish(gsc->gsc_pc, sc->sc_ih);
307 0 : bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, gsc->gsc_memsize);
308 :
309 0 : return (0);
310 : }
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