2 * Copyright (C) 2007-2008 Semihalf, Rafal Jaworowski
3 * Copyright (C) 2006-2007 Semihalf, Piotr Kruszynski
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
20 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
22 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
23 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * From: FreeBSD: head/sys/dev/tsec/if_tsec_ocp.c 188712 2009-02-17 14:59:47Z raj
30 * FDT 'simple-bus' attachment for Freescale TSEC controller.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/endian.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
41 #include <sys/socket.h>
42 #include <sys/sysctl.h>
45 #include <machine/bus.h>
47 #include <machine/resource.h>
49 #include <net/ethernet.h>
51 #include <net/if_dl.h>
52 #include <net/if_media.h>
53 #include <net/if_arp.h>
55 #include <dev/fdt/fdt_common.h>
56 #include <dev/mii/mii.h>
57 #include <dev/mii/miivar.h>
58 #include <dev/ofw/ofw_bus.h>
59 #include <dev/ofw/ofw_bus_subr.h>
60 #include <dev/ofw/openfirm.h>
62 #include <dev/tsec/if_tsec.h>
63 #include <dev/tsec/if_tsecreg.h>
65 #include "miibus_if.h"
67 #define TSEC_RID_TXIRQ 0
68 #define TSEC_RID_RXIRQ 1
69 #define TSEC_RID_ERRIRQ 2
71 static int tsec_fdt_probe(device_t dev);
72 static int tsec_fdt_attach(device_t dev);
73 static int tsec_fdt_detach(device_t dev);
74 static int tsec_setup_intr(struct tsec_softc *sc, struct resource **ires,
75 void **ihand, int *irid, driver_intr_t handler, const char *iname);
76 static void tsec_release_intr(struct tsec_softc *sc, struct resource *ires,
77 void *ihand, int irid, const char *iname);
79 static device_method_t tsec_methods[] = {
80 /* Device interface */
81 DEVMETHOD(device_probe, tsec_fdt_probe),
82 DEVMETHOD(device_attach, tsec_fdt_attach),
83 DEVMETHOD(device_detach, tsec_fdt_detach),
85 DEVMETHOD(device_shutdown, tsec_shutdown),
86 DEVMETHOD(device_suspend, tsec_suspend),
87 DEVMETHOD(device_resume, tsec_resume),
90 DEVMETHOD(miibus_readreg, tsec_miibus_readreg),
91 DEVMETHOD(miibus_writereg, tsec_miibus_writereg),
92 DEVMETHOD(miibus_statchg, tsec_miibus_statchg),
97 static driver_t tsec_fdt_driver = {
100 sizeof(struct tsec_softc),
103 DRIVER_MODULE(tsec, simplebus, tsec_fdt_driver, tsec_devclass, 0, 0);
104 MODULE_DEPEND(tsec, simplebus, 1, 1, 1);
105 MODULE_DEPEND(tsec, ether, 1, 1, 1);
108 tsec_fdt_probe(device_t dev)
110 struct tsec_softc *sc;
113 if (!ofw_bus_is_compatible(dev, "gianfar"))
116 sc = device_get_softc(dev);
119 sc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rrid,
121 if (sc->sc_rres == NULL)
124 sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres);
125 sc->sc_bas.bst = rman_get_bustag(sc->sc_rres);
127 /* Check if we are eTSEC (enhanced TSEC) */
128 id = TSEC_READ(sc, TSEC_REG_ID);
129 sc->is_etsec = ((id >> 16) == TSEC_ETSEC_ID) ? 1 : 0;
130 id |= TSEC_READ(sc, TSEC_REG_ID2);
132 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid, sc->sc_rres);
135 device_printf(dev, "could not identify TSEC type\n");
140 device_set_desc(dev, "Enhanced Three-Speed Ethernet Controller");
142 device_set_desc(dev, "Three-Speed Ethernet Controller");
144 return (BUS_PROBE_DEFAULT);
148 tsec_fdt_attach(device_t dev)
150 struct tsec_softc *sc;
153 sc = device_get_softc(dev);
155 sc->node = ofw_bus_get_node(dev);
157 /* Get phy address from fdt */
158 if (fdt_get_phyaddr(sc->node, sc->dev, &sc->phyaddr,
159 (void **)&sc->phy_sc) != 0)
163 callout_init(&sc->tsec_callout, 1);
166 mtx_init(&sc->transmit_lock, device_get_nameunit(dev), "TSEC TX lock",
168 mtx_init(&sc->receive_lock, device_get_nameunit(dev), "TSEC RX lock",
170 mtx_init(&sc->ic_lock, device_get_nameunit(dev), "TSEC IC lock",
173 /* Allocate IO memory for TSEC registers */
175 sc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_rrid,
177 if (sc->sc_rres == NULL) {
178 device_printf(dev, "could not allocate IO memory range!\n");
181 sc->sc_bas.bsh = rman_get_bushandle(sc->sc_rres);
182 sc->sc_bas.bst = rman_get_bustag(sc->sc_rres);
185 if (tsec_attach(sc) != 0) {
186 device_printf(dev, "could not be configured\n");
190 /* Set up interrupts (TX/RX/ERR) */
191 sc->sc_transmit_irid = TSEC_RID_TXIRQ;
192 error = tsec_setup_intr(sc, &sc->sc_transmit_ires,
193 &sc->sc_transmit_ihand, &sc->sc_transmit_irid,
194 tsec_transmit_intr, "TX");
198 sc->sc_receive_irid = TSEC_RID_RXIRQ;
199 error = tsec_setup_intr(sc, &sc->sc_receive_ires,
200 &sc->sc_receive_ihand, &sc->sc_receive_irid,
201 tsec_receive_intr, "RX");
205 sc->sc_error_irid = TSEC_RID_ERRIRQ;
206 error = tsec_setup_intr(sc, &sc->sc_error_ires,
207 &sc->sc_error_ihand, &sc->sc_error_irid,
208 tsec_error_intr, "ERR");
215 tsec_release_intr(sc, sc->sc_receive_ires, sc->sc_receive_ihand,
216 sc->sc_receive_irid, "RX");
218 tsec_release_intr(sc, sc->sc_transmit_ires, sc->sc_transmit_ihand,
219 sc->sc_transmit_irid, "TX");
221 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid, sc->sc_rres);
223 mtx_destroy(&sc->receive_lock);
224 mtx_destroy(&sc->transmit_lock);
229 tsec_setup_intr(struct tsec_softc *sc, struct resource **ires, void **ihand,
230 int *irid, driver_intr_t handler, const char *iname)
234 *ires = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ, irid, RF_ACTIVE);
236 device_printf(sc->dev, "could not allocate %s IRQ\n", iname);
239 error = bus_setup_intr(sc->dev, *ires, INTR_TYPE_NET | INTR_MPSAFE,
240 NULL, handler, sc, ihand);
242 device_printf(sc->dev, "failed to set up %s IRQ\n", iname);
243 if (bus_release_resource(sc->dev, SYS_RES_IRQ, *irid, *ires))
244 device_printf(sc->dev, "could not release %s IRQ\n", iname);
252 tsec_release_intr(struct tsec_softc *sc, struct resource *ires, void *ihand,
253 int irid, const char *iname)
260 error = bus_teardown_intr(sc->dev, ires, ihand);
262 device_printf(sc->dev, "bus_teardown_intr() failed for %s intr"
263 ", error %d\n", iname, error);
265 error = bus_release_resource(sc->dev, SYS_RES_IRQ, irid, ires);
267 device_printf(sc->dev, "bus_release_resource() failed for %s "
268 "intr, error %d\n", iname, error);
272 tsec_fdt_detach(device_t dev)
274 struct tsec_softc *sc;
277 sc = device_get_softc(dev);
279 /* Wait for stopping watchdog */
280 callout_drain(&sc->tsec_callout);
282 /* Stop and release all interrupts */
283 tsec_release_intr(sc, sc->sc_transmit_ires, sc->sc_transmit_ihand,
284 sc->sc_transmit_irid, "TX");
285 tsec_release_intr(sc, sc->sc_receive_ires, sc->sc_receive_ihand,
286 sc->sc_receive_irid, "RX");
287 tsec_release_intr(sc, sc->sc_error_ires, sc->sc_error_ihand,
288 sc->sc_error_irid, "ERR");
293 /* Free IO memory handler */
295 error = bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_rrid,
298 device_printf(dev, "bus_release_resource() failed for"
299 " IO memory, error %d\n", error);
303 mtx_destroy(&sc->receive_lock);
304 mtx_destroy(&sc->transmit_lock);
305 mtx_destroy(&sc->ic_lock);
310 tsec_get_hwaddr(struct tsec_softc *sc, uint8_t *addr)
318 hw.reg[0] = hw.reg[1] = 0;
320 /* Retrieve the hardware address from the device tree. */
321 i = OF_getprop(sc->node, "local-mac-address", (void *)hw.addr, 6);
322 if (i == 6 && (hw.reg[0] != 0 || hw.reg[1] != 0)) {
323 bcopy(hw.addr, addr, 6);
328 * Fall back -- use the currently programmed address in the hope that
329 * it was set be firmware...
331 hw.reg[0] = TSEC_READ(sc, TSEC_REG_MACSTNADDR1);
332 hw.reg[1] = TSEC_READ(sc, TSEC_REG_MACSTNADDR2);
333 for (i = 0; i < 6; i++)
334 addr[5-i] = hw.addr[i];