2 * Copyright (C) 2001 Eduardo Horvath.
3 * Copyright (c) 2007 Marius Strobl <marius@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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
28 * from: NetBSD: if_gem_pci.c,v 1.7 2001/10/18 15:09:15 thorpej Exp
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 * PCI bindings for Apple GMAC, Sun ERI and Sun GEM Ethernet controllers
38 #include <sys/param.h>
39 #include <sys/systm.h>
41 #include <sys/kernel.h>
43 #include <sys/malloc.h>
44 #include <sys/module.h>
45 #include <sys/mutex.h>
46 #include <sys/resource.h>
48 #include <sys/socket.h>
50 #include <net/ethernet.h>
53 #include <machine/bus.h>
54 #if defined(__powerpc__) || defined(__sparc64__)
55 #include <dev/ofw/openfirm.h>
56 #include <machine/ofw_machdep.h>
58 #include <machine/resource.h>
60 #include <dev/gem/if_gemreg.h>
61 #include <dev/gem/if_gemvar.h>
63 #include <dev/pci/pcireg.h>
64 #include <dev/pci/pcivar.h>
66 #include "miibus_if.h"
68 static int gem_pci_attach(device_t dev);
69 static int gem_pci_detach(device_t dev);
70 static int gem_pci_probe(device_t dev);
71 static int gem_pci_resume(device_t dev);
72 static int gem_pci_suspend(device_t dev);
74 static device_method_t gem_pci_methods[] = {
75 /* Device interface */
76 DEVMETHOD(device_probe, gem_pci_probe),
77 DEVMETHOD(device_attach, gem_pci_attach),
78 DEVMETHOD(device_detach, gem_pci_detach),
79 DEVMETHOD(device_suspend, gem_pci_suspend),
80 DEVMETHOD(device_resume, gem_pci_resume),
81 /* Use the suspend handler here, it is all that is required. */
82 DEVMETHOD(device_shutdown, gem_pci_suspend),
85 DEVMETHOD(bus_print_child, bus_generic_print_child),
86 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
89 DEVMETHOD(miibus_readreg, gem_mii_readreg),
90 DEVMETHOD(miibus_writereg, gem_mii_writereg),
91 DEVMETHOD(miibus_statchg, gem_mii_statchg),
96 static driver_t gem_pci_driver = {
99 sizeof(struct gem_softc)
102 DRIVER_MODULE(gem, pci, gem_pci_driver, gem_devclass, 0, 0);
103 MODULE_DEPEND(gem, pci, 1, 1, 1);
104 MODULE_DEPEND(gem, ether, 1, 1, 1);
106 static const struct gem_pci_dev {
109 const char *gpd_desc;
110 } const gem_pci_devlist[] = {
111 { 0x1101108e, GEM_SUN_ERI, "Sun ERI 10/100 Ethernet" },
112 { 0x2bad108e, GEM_SUN_GEM, "Sun GEM Gigabit Ethernet" },
113 { 0x0021106b, GEM_APPLE_GMAC, "Apple UniNorth GMAC Ethernet" },
114 { 0x0024106b, GEM_APPLE_GMAC, "Apple Pangea GMAC Ethernet" },
115 { 0x0032106b, GEM_APPLE_GMAC, "Apple UniNorth2 GMAC Ethernet" },
116 { 0x004c106b, GEM_APPLE_K2_GMAC,"Apple K2 GMAC Ethernet" },
117 { 0x0051106b, GEM_APPLE_GMAC, "Apple Shasta GMAC Ethernet" },
118 { 0x006b106b, GEM_APPLE_GMAC, "Apple Intrepid 2 GMAC Ethernet" },
123 gem_pci_probe(device_t dev)
127 for (i = 0; gem_pci_devlist[i].gpd_desc != NULL; i++) {
128 if (pci_get_devid(dev) == gem_pci_devlist[i].gpd_devid) {
129 device_set_desc(dev, gem_pci_devlist[i].gpd_desc);
130 return (BUS_PROBE_DEFAULT);
137 static struct resource_spec gem_pci_res_spec[] = {
138 { SYS_RES_IRQ, 0, RF_SHAREABLE | RF_ACTIVE }, /* GEM_RES_INTR */
139 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE }, /* GEM_RES_BANK1 */
144 gem_pci_attach(device_t dev)
146 struct gem_softc *sc;
148 #if !(defined(__powerpc__) || defined(__sparc64__))
152 sc = device_get_softc(dev);
153 sc->sc_variant = GEM_UNKNOWN;
154 for (i = 0; gem_pci_devlist[i].gpd_desc != NULL; i++) {
155 if (pci_get_devid(dev) == gem_pci_devlist[i].gpd_devid) {
156 sc->sc_variant = gem_pci_devlist[i].gpd_variant;
160 if (sc->sc_variant == GEM_UNKNOWN) {
161 device_printf(dev, "unknown adaptor\n");
165 pci_enable_busmaster(dev);
168 * Some Sun GEMs/ERIs do have their intpin register bogusly set to 0,
169 * although it should be 1. Correct that.
171 if (pci_get_intpin(dev) == 0)
172 pci_set_intpin(dev, 1);
175 sc->sc_flags |= GEM_PCI;
177 if (bus_alloc_resources(dev, gem_pci_res_spec, sc->sc_res)) {
178 device_printf(dev, "failed to allocate resources\n");
179 bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);
183 GEM_LOCK_INIT(sc, device_get_nameunit(dev));
186 * Derive GEM_RES_BANK2 from GEM_RES_BANK1. This seemed cleaner
187 * with the old way of using copies of the bus tag and handle in
188 * the softc along with bus_space_*()...
190 sc->sc_res[GEM_RES_BANK2] = malloc(sizeof(*sc->sc_res[GEM_RES_BANK2]),
191 M_DEVBUF, M_NOWAIT | M_ZERO);
192 if (sc->sc_res[GEM_RES_BANK2] == NULL) {
193 device_printf(dev, "failed to allocate bank2 resource\n");
196 rman_set_bustag(sc->sc_res[GEM_RES_BANK2],
197 rman_get_bustag(sc->sc_res[GEM_RES_BANK1]));
198 bus_space_subregion(rman_get_bustag(sc->sc_res[GEM_RES_BANK1]),
199 rman_get_bushandle(sc->sc_res[GEM_RES_BANK1]),
200 GEM_PCI_BANK2_OFFSET, GEM_PCI_BANK2_SIZE,
201 &sc->sc_res[GEM_RES_BANK2]->r_bushandle);
203 /* Determine whether we're running at 66MHz. */
204 if ((GEM_BANK2_READ_4(sc, GEM_PCI_BIF_CONFIG) &
205 GEM_PCI_BIF_CNF_M66EN) != 0)
206 sc->sc_flags |= GEM_PCI66;
208 #if defined(__powerpc__) || defined(__sparc64__)
209 OF_getetheraddr(dev, sc->sc_enaddr);
212 * Dig out VPD (vital product data) and read NA (network address).
213 * The VPD resides in the PCI Expansion ROM (PCI FCode) and can't
214 * be accessed via the PCI capability pointer.
215 * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later)
216 * chapter 2 describes the data structure.
219 #define PCI_ROMHDR_SIZE 0x1c
220 #define PCI_ROMHDR_SIG 0x00
221 #define PCI_ROMHDR_SIG_MAGIC 0xaa55 /* little endian */
222 #define PCI_ROMHDR_PTR_DATA 0x18
223 #define PCI_ROM_SIZE 0x18
224 #define PCI_ROM_SIG 0x00
225 #define PCI_ROM_SIG_MAGIC 0x52494350 /* "PCIR", endian */
227 #define PCI_ROM_VENDOR 0x04
228 #define PCI_ROM_DEVICE 0x06
229 #define PCI_ROM_PTR_VPD 0x08
230 #define PCI_VPDRES_BYTE0 0x00
231 #define PCI_VPDRES_ISLARGE(x) ((x) & 0x80)
232 #define PCI_VPDRES_LARGE_NAME(x) ((x) & 0x7f)
233 #define PCI_VPDRES_LARGE_LEN_LSB 0x01
234 #define PCI_VPDRES_LARGE_LEN_MSB 0x02
235 #define PCI_VPDRES_LARGE_SIZE 0x03
236 #define PCI_VPDRES_TYPE_VPD 0x10 /* large */
237 #define PCI_VPD_KEY0 0x00
238 #define PCI_VPD_KEY1 0x01
239 #define PCI_VPD_LEN 0x02
240 #define PCI_VPD_SIZE 0x03
242 #define GEM_ROM_READ_1(sc, offs) \
243 GEM_BANK1_READ_1((sc), GEM_PCI_ROM_OFFSET + (offs))
244 #define GEM_ROM_READ_2(sc, offs) \
245 GEM_BANK1_READ_2((sc), GEM_PCI_ROM_OFFSET + (offs))
246 #define GEM_ROM_READ_4(sc, offs) \
247 GEM_BANK1_READ_4((sc), GEM_PCI_ROM_OFFSET + (offs))
249 /* Read PCI Expansion ROM header. */
250 if (GEM_ROM_READ_2(sc, PCI_ROMHDR_SIG) != PCI_ROMHDR_SIG_MAGIC ||
251 (i = GEM_ROM_READ_2(sc, PCI_ROMHDR_PTR_DATA)) <
253 device_printf(dev, "unexpected PCI Expansion ROM header\n");
257 /* Read PCI Expansion ROM data. */
258 if (GEM_ROM_READ_4(sc, i + PCI_ROM_SIG) != PCI_ROM_SIG_MAGIC ||
259 GEM_ROM_READ_2(sc, i + PCI_ROM_VENDOR) != pci_get_vendor(dev) ||
260 GEM_ROM_READ_2(sc, i + PCI_ROM_DEVICE) != pci_get_device(dev) ||
261 (j = GEM_ROM_READ_2(sc, i + PCI_ROM_PTR_VPD)) <
263 device_printf(dev, "unexpected PCI Expansion ROM data\n");
269 * SUNW,pci-gem cards have a single large resource VPD-R tag
270 * containing one NA. The VPD used is not in PCI 2.2 standard
271 * format however. The length in the resource header is in big
272 * endian and the end tag is non-standard (0x79) and followed
273 * by an all-zero "checksum" byte. Sun calls this a "Fresh
274 * Choice Ethernet" VPD...
276 if (PCI_VPDRES_ISLARGE(GEM_ROM_READ_1(sc,
277 j + PCI_VPDRES_BYTE0)) == 0 ||
278 PCI_VPDRES_LARGE_NAME(GEM_ROM_READ_1(sc,
279 j + PCI_VPDRES_BYTE0)) != PCI_VPDRES_TYPE_VPD ||
280 ((GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_LEN_LSB) << 8) |
281 GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_LEN_MSB)) !=
282 PCI_VPD_SIZE + ETHER_ADDR_LEN ||
283 GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_KEY0) !=
285 GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_KEY1) !=
287 GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_LEN) !=
289 GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_SIZE +
290 ETHER_ADDR_LEN) != 0x79) {
291 device_printf(dev, "unexpected PCI VPD\n");
294 bus_read_region_1(sc->sc_res[GEM_RES_BANK1],
295 GEM_PCI_ROM_OFFSET + j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_SIZE,
296 sc->sc_enaddr, ETHER_ADDR_LEN);
299 if (gem_attach(sc) != 0) {
300 device_printf(dev, "could not be attached\n");
304 if (bus_setup_intr(dev, sc->sc_res[GEM_RES_INTR], INTR_TYPE_NET |
305 INTR_MPSAFE, NULL, gem_intr, sc, &sc->sc_ih) != 0) {
306 device_printf(dev, "failed to set up interrupt\n");
313 if (sc->sc_res[GEM_RES_BANK2] != NULL)
314 free(sc->sc_res[GEM_RES_BANK2], M_DEVBUF);
315 GEM_LOCK_DESTROY(sc);
316 bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);
321 gem_pci_detach(device_t dev)
323 struct gem_softc *sc;
325 sc = device_get_softc(dev);
326 bus_teardown_intr(dev, sc->sc_res[GEM_RES_INTR], sc->sc_ih);
328 free(sc->sc_res[GEM_RES_BANK2], M_DEVBUF);
329 GEM_LOCK_DESTROY(sc);
330 bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);
335 gem_pci_suspend(device_t dev)
338 gem_suspend(device_get_softc(dev));
343 gem_pci_resume(device_t dev)
346 gem_resume(device_get_softc(dev));