Line data Source code
1 : /* $OpenBSD: if_hme_pci.c,v 1.21 2015/11/24 17:11:39 mpi Exp $ */
2 : /* $NetBSD: if_hme_pci.c,v 1.3 2000/12/28 22:59:13 sommerfeld Exp $ */
3 :
4 : /*
5 : * Copyright (c) 2000 Matthew R. Green
6 : * All rights reserved.
7 : *
8 : * Redistribution and use in source and binary forms, with or without
9 : * modification, are permitted provided that the following conditions
10 : * are met:
11 : * 1. Redistributions of source code must retain the above copyright
12 : * notice, this list of conditions and the following disclaimer.
13 : * 2. Redistributions in binary form must reproduce the above copyright
14 : * notice, this list of conditions and the following disclaimer in the
15 : * documentation and/or other materials provided with the distribution.
16 : * 3. The name of the author may not be used to endorse or promote products
17 : * derived from this software without specific prior written permission.
18 : *
19 : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 : * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 : * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 : * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 : * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 : * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 : * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 : * 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 : * PCI front-end device driver for the HME ethernet device.
34 : */
35 :
36 : #include <sys/param.h>
37 : #include <sys/systm.h>
38 : #include <sys/syslog.h>
39 : #include <sys/device.h>
40 : #include <sys/malloc.h>
41 : #include <sys/socket.h>
42 :
43 : #include <net/if.h>
44 : #include <net/if_media.h>
45 :
46 : #include <netinet/in.h>
47 : #include <netinet/if_ether.h>
48 :
49 : #include <dev/mii/miivar.h>
50 :
51 : #ifdef __sparc64__
52 : #include <machine/autoconf.h>
53 : #include <dev/ofw/openfirm.h>
54 : #endif
55 : #include <machine/cpu.h>
56 :
57 : #include <dev/pci/pcivar.h>
58 : #include <dev/pci/pcireg.h>
59 : #include <dev/pci/pcidevs.h>
60 :
61 : #include <dev/ic/hmevar.h>
62 :
63 : struct hme_pci_softc {
64 : struct hme_softc hsc_hme; /* HME device */
65 : bus_space_tag_t hsc_memt;
66 : bus_space_handle_t hsc_memh;
67 : bus_size_t hsc_memsize;
68 : void *hsc_ih;
69 : pci_chipset_tag_t hsc_pc;
70 : };
71 :
72 : int hmematch_pci(struct device *, void *, void *);
73 : void hmeattach_pci(struct device *, struct device *, void *);
74 : int hmedetach_pci(struct device *, int);
75 : int hme_pci_enaddr(struct hme_softc *, struct pci_attach_args *);
76 :
77 : struct cfattach hme_pci_ca = {
78 : sizeof(struct hme_pci_softc), hmematch_pci, hmeattach_pci, hmedetach_pci
79 : };
80 :
81 : int
82 0 : hmematch_pci(parent, vcf, aux)
83 : struct device *parent;
84 : void *vcf;
85 : void *aux;
86 : {
87 0 : struct pci_attach_args *pa = aux;
88 :
89 0 : if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
90 0 : PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HME)
91 0 : return (1);
92 :
93 0 : return (0);
94 0 : }
95 :
96 : #define PCI_EBUS2_BOOTROM 0x10
97 : #define PCI_EBUS2_BOOTROM_SIZE 0x20000
98 : #define PROMHDR_PTR_DATA 0x18
99 : #define PROMDATA_PTR_VPD 0x08
100 : #define PROMDATA_LENGTH 0x0a
101 : #define PROMDATA_REVISION 0x0c
102 : #define PROMDATA_SUBCLASS 0x0e
103 : #define PROMDATA_CLASS 0x0f
104 :
105 : static const u_int8_t hme_promhdr[] = { 0x55, 0xaa };
106 : static const u_int8_t hme_promdat[] = {
107 : 'P', 'C', 'I', 'R',
108 : PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8,
109 : PCI_PRODUCT_SUN_HME & 0xff, PCI_PRODUCT_SUN_HME >> 8
110 : };
111 :
112 : int
113 0 : hme_pci_enaddr(struct hme_softc *sc, struct pci_attach_args *hpa)
114 : {
115 0 : struct pci_attach_args epa;
116 : struct pci_vpd *vpd;
117 : pcireg_t cl, id;
118 0 : bus_space_handle_t romh;
119 0 : bus_space_tag_t romt;
120 0 : bus_size_t romsize = 0;
121 0 : u_int8_t buf[32];
122 : int dataoff, vpdoff, length;
123 :
124 : /*
125 : * Dig out VPD (vital product data) and acquire Ethernet address.
126 : * The VPD of hme resides in the Boot PROM (PCI FCode) attached
127 : * to the EBus interface.
128 : * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later)
129 : * chapter 2 describes the data structure.
130 : */
131 :
132 : /* get a PCI tag for the EBus bridge (function 0 of the same device) */
133 0 : epa = *hpa;
134 0 : epa.pa_tag = pci_make_tag(hpa->pa_pc, hpa->pa_bus, hpa->pa_device, 0);
135 0 : cl = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_CLASS_REG);
136 0 : id = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_ID_REG);
137 :
138 0 : if (PCI_CLASS(cl) != PCI_CLASS_BRIDGE ||
139 0 : PCI_PRODUCT(id) != PCI_PRODUCT_SUN_EBUS)
140 : goto fail;
141 :
142 0 : if (pci_mapreg_map(&epa, PCI_EBUS2_BOOTROM, PCI_MAPREG_TYPE_MEM, 0,
143 : &romt, &romh, 0, &romsize, PCI_EBUS2_BOOTROM_SIZE))
144 : goto fail;
145 :
146 0 : bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf));
147 0 : if (bcmp(buf, hme_promhdr, sizeof(hme_promhdr)))
148 : goto fail;
149 :
150 0 : dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8);
151 0 : if (dataoff < 0x1c)
152 : goto fail;
153 :
154 0 : bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf));
155 0 : if (bcmp(buf, hme_promdat, sizeof(hme_promdat)))
156 : goto fail;
157 :
158 : /*
159 : * Don't check the interface part of the class code, since
160 : * some cards have a bogus value there.
161 : */
162 0 : length = buf[PROMDATA_LENGTH] | (buf[PROMDATA_LENGTH + 1] << 8);
163 0 : if (length != 0x18 || buf[PROMDATA_REVISION] != 0x00 ||
164 0 : buf[PROMDATA_SUBCLASS] != PCI_SUBCLASS_NETWORK_ETHERNET ||
165 0 : buf[PROMDATA_CLASS] != PCI_CLASS_NETWORK)
166 : goto fail;
167 :
168 0 : vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8);
169 0 : if (vpdoff < 0x1c)
170 : goto fail;
171 :
172 : /*
173 : * The VPD of hme is not in PCI 2.2 standard format. The length
174 : * in the resource header is in big endian, and resources are not
175 : * properly terminated (only one resource and no end tag).
176 : */
177 0 : bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf));
178 :
179 : /* XXX TODO: Get the data from VPD */
180 0 : vpd = (struct pci_vpd *)(buf + 3);
181 0 : if (!PCI_VPDRES_ISLARGE(buf[0]) ||
182 0 : PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD)
183 : goto fail;
184 0 : if (vpd->vpd_key0 != 'N' || vpd->vpd_key1 != 'A')
185 : goto fail;
186 :
187 0 : bcopy(buf + 6, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN);
188 0 : sc->sc_arpcom.ac_enaddr[5] += hpa->pa_device;
189 0 : bus_space_unmap(romt, romh, romsize);
190 0 : return (0);
191 :
192 : fail:
193 0 : if (romsize != 0)
194 0 : bus_space_unmap(romt, romh, romsize);
195 0 : return (-1);
196 0 : }
197 :
198 : void
199 0 : hmeattach_pci(parent, self, aux)
200 : struct device *parent, *self;
201 : void *aux;
202 : {
203 0 : struct pci_attach_args *pa = aux;
204 0 : struct hme_pci_softc *hsc = (void *)self;
205 0 : struct hme_softc *sc = &hsc->hsc_hme;
206 0 : pci_intr_handle_t ih;
207 : /* XXX the following declarations should be elsewhere */
208 : extern void myetheraddr(u_char *);
209 : pcireg_t csr;
210 : const char *intrstr = NULL;
211 : int type, gotenaddr = 0;
212 :
213 0 : hsc->hsc_pc = pa->pa_pc;
214 :
215 : /*
216 : * enable io/memory-space accesses. this is kinda of gross; but
217 : * the hme comes up with neither IO space enabled, or memory space.
218 : */
219 0 : if (pa->pa_memt)
220 0 : pa->pa_flags |= PCI_FLAGS_MEM_ENABLED;
221 0 : if (pa->pa_iot)
222 0 : pa->pa_flags |= PCI_FLAGS_IO_ENABLED;
223 0 : csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
224 0 : if (pa->pa_memt) {
225 : type = PCI_MAPREG_TYPE_MEM;
226 0 : csr |= PCI_COMMAND_MEM_ENABLE;
227 0 : sc->sc_bustag = pa->pa_memt;
228 0 : } else {
229 : type = PCI_MAPREG_TYPE_IO;
230 0 : csr |= PCI_COMMAND_IO_ENABLE;
231 0 : sc->sc_bustag = pa->pa_iot;
232 : }
233 0 : pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
234 0 : csr | PCI_COMMAND_MEM_ENABLE);
235 :
236 0 : sc->sc_dmatag = pa->pa_dmat;
237 :
238 0 : sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */
239 : /*
240 : * Map five register banks:
241 : *
242 : * bank 0: HME SEB registers: +0x0000
243 : * bank 1: HME ETX registers: +0x2000
244 : * bank 2: HME ERX registers: +0x4000
245 : * bank 3: HME MAC registers: +0x6000
246 : * bank 4: HME MIF registers: +0x7000
247 : *
248 : */
249 :
250 : #define PCI_HME_BASEADDR 0x10
251 0 : if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0,
252 0 : &hsc->hsc_memt, &hsc->hsc_memh, NULL, &hsc->hsc_memsize, 0) != 0) {
253 0 : printf(": can't map registers\n");
254 0 : return;
255 : }
256 0 : sc->sc_seb = hsc->hsc_memh;
257 0 : bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x2000, 0x2000,
258 0 : &sc->sc_etx);
259 0 : bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x4000, 0x2000,
260 0 : &sc->sc_erx);
261 0 : bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x6000, 0x1000,
262 0 : &sc->sc_mac);
263 0 : bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x7000, 0x1000,
264 0 : &sc->sc_mif);
265 :
266 0 : if (hme_pci_enaddr(sc, pa) == 0)
267 0 : gotenaddr = 1;
268 :
269 : #ifdef __sparc64__
270 : if (!gotenaddr) {
271 : if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address",
272 : sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN) <= 0)
273 : myetheraddr(sc->sc_arpcom.ac_enaddr);
274 : gotenaddr = 1;
275 : }
276 : #endif
277 : #ifdef __powerpc__
278 : if (!gotenaddr) {
279 : pci_ether_hw_addr(pa->pa_pc, sc->sc_arpcom.ac_enaddr);
280 : gotenaddr = 1;
281 : }
282 : #endif
283 :
284 0 : sc->sc_burst = 16; /* XXX */
285 :
286 0 : if (pci_intr_map(pa, &ih) != 0) {
287 0 : printf(": couldn't map interrupt\n");
288 0 : bus_space_unmap(hsc->hsc_memt, hsc->hsc_memh, hsc->hsc_memsize);
289 0 : return;
290 : }
291 0 : intrstr = pci_intr_string(pa->pa_pc, ih);
292 0 : hsc->hsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET,
293 0 : hme_intr, sc, self->dv_xname);
294 0 : if (hsc->hsc_ih == NULL) {
295 0 : printf(": couldn't establish interrupt");
296 0 : if (intrstr != NULL)
297 0 : printf(" at %s", intrstr);
298 0 : printf("\n");
299 0 : bus_space_unmap(hsc->hsc_memt, hsc->hsc_memh, hsc->hsc_memsize);
300 0 : return;
301 : }
302 :
303 0 : printf(": %s", intrstr);
304 :
305 : /*
306 : * call the main configure
307 : */
308 0 : hme_config(sc);
309 0 : }
310 :
311 : int
312 0 : hmedetach_pci(struct device *self, int flags)
313 : {
314 0 : struct hme_pci_softc *hsc = (void *)self;
315 0 : struct hme_softc *sc = &hsc->hsc_hme;
316 :
317 0 : timeout_del(&sc->sc_tick_ch);
318 0 : pci_intr_disestablish(hsc->hsc_pc, hsc->hsc_ih);
319 :
320 0 : hme_unconfig(sc);
321 0 : bus_space_unmap(hsc->hsc_memt, hsc->hsc_memh, hsc->hsc_memsize);
322 0 : return (0);
323 : }
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