2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Thomas Skibo
5 * Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 /* Generic driver to attach sdhci controllers on simplebus.
30 * Derived mainly from sdhci_pci.c
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
37 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <sys/module.h>
42 #include <sys/mutex.h>
43 #include <sys/resource.h>
45 #include <sys/sysctl.h>
46 #include <sys/taskqueue.h>
48 #include <machine/bus.h>
49 #include <machine/resource.h>
51 #include <dev/fdt/fdt_common.h>
52 #include <dev/ofw/ofw_bus.h>
53 #include <dev/ofw/ofw_bus_subr.h>
55 #include <dev/mmc/bridge.h>
57 #include <dev/sdhci/sdhci.h>
62 #include "opt_mmccam.h"
65 #define SDHCI_FDT_ARMADA38X 1
66 #define SDHCI_FDT_GENERIC 2
67 #define SDHCI_FDT_XLNX_ZY7 3
68 #define SDHCI_FDT_QUALCOMM 4
70 static struct ofw_compat_data compat_data[] = {
71 { "marvell,armada-380-sdhci", SDHCI_FDT_ARMADA38X },
72 { "sdhci_generic", SDHCI_FDT_GENERIC },
73 { "qcom,sdhci-msm-v4", SDHCI_FDT_QUALCOMM },
74 { "xlnx,zy7_sdhci", SDHCI_FDT_XLNX_ZY7 },
78 struct sdhci_fdt_softc {
79 device_t dev; /* Controller device */
80 u_int quirks; /* Chip specific quirks */
81 u_int caps; /* If we override SDHCI_CAPABILITIES */
82 uint32_t max_clk; /* Max possible freq */
83 struct resource *irq_res; /* IRQ resource */
84 void *intrhand; /* Interrupt handle */
86 int num_slots; /* Number of slots on this controller*/
87 struct sdhci_slot slots[MAX_SLOTS];
88 struct resource *mem_res[MAX_SLOTS]; /* Memory resource */
90 bool wp_inverted; /* WP pin is inverted */
91 bool no_18v; /* No 1.8V support */
95 sdhci_fdt_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off)
97 struct sdhci_fdt_softc *sc = device_get_softc(dev);
99 return (bus_read_1(sc->mem_res[slot->num], off));
103 sdhci_fdt_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off,
106 struct sdhci_fdt_softc *sc = device_get_softc(dev);
108 bus_write_1(sc->mem_res[slot->num], off, val);
112 sdhci_fdt_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off)
114 struct sdhci_fdt_softc *sc = device_get_softc(dev);
116 return (bus_read_2(sc->mem_res[slot->num], off));
120 sdhci_fdt_write_2(device_t dev, struct sdhci_slot *slot, bus_size_t off,
123 struct sdhci_fdt_softc *sc = device_get_softc(dev);
125 bus_write_2(sc->mem_res[slot->num], off, val);
129 sdhci_fdt_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off)
131 struct sdhci_fdt_softc *sc = device_get_softc(dev);
134 val32 = bus_read_4(sc->mem_res[slot->num], off);
135 if (off == SDHCI_CAPABILITIES && sc->no_18v)
136 val32 &= ~SDHCI_CAN_VDD_180;
142 sdhci_fdt_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off,
145 struct sdhci_fdt_softc *sc = device_get_softc(dev);
147 bus_write_4(sc->mem_res[slot->num], off, val);
151 sdhci_fdt_read_multi_4(device_t dev, struct sdhci_slot *slot,
152 bus_size_t off, uint32_t *data, bus_size_t count)
154 struct sdhci_fdt_softc *sc = device_get_softc(dev);
156 bus_read_multi_4(sc->mem_res[slot->num], off, data, count);
160 sdhci_fdt_write_multi_4(device_t dev, struct sdhci_slot *slot,
161 bus_size_t off, uint32_t *data, bus_size_t count)
163 struct sdhci_fdt_softc *sc = device_get_softc(dev);
165 bus_write_multi_4(sc->mem_res[slot->num], off, data, count);
169 sdhci_fdt_intr(void *arg)
171 struct sdhci_fdt_softc *sc = (struct sdhci_fdt_softc *)arg;
174 for (i = 0; i < sc->num_slots; i++)
175 sdhci_generic_intr(&sc->slots[i]);
179 sdhci_fdt_get_ro(device_t bus, device_t dev)
181 struct sdhci_fdt_softc *sc = device_get_softc(bus);
183 return (sdhci_generic_get_ro(bus, dev) ^ sc->wp_inverted);
187 sdhci_fdt_probe(device_t dev)
189 struct sdhci_fdt_softc *sc = device_get_softc(dev);
197 if (!ofw_bus_status_okay(dev))
200 switch (ofw_bus_search_compatible(dev, compat_data)->ocd_data) {
201 case SDHCI_FDT_ARMADA38X:
202 sc->quirks = SDHCI_QUIRK_BROKEN_AUTO_STOP;
203 device_set_desc(dev, "ARMADA38X SDHCI controller");
205 case SDHCI_FDT_GENERIC:
206 device_set_desc(dev, "generic fdt SDHCI controller");
208 case SDHCI_FDT_QUALCOMM:
209 sc->quirks = SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE;
210 device_set_desc(dev, "Qualcomm FDT SDHCI controller");
212 case SDHCI_FDT_XLNX_ZY7:
213 sc->quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK;
214 device_set_desc(dev, "Zynq-7000 generic fdt SDHCI controller");
220 node = ofw_bus_get_node(dev);
222 /* Allow dts to patch quirks, slots, and max-frequency. */
223 if ((OF_getencprop(node, "quirks", &cid, sizeof(cid))) > 0)
225 if ((OF_getencprop(node, "num-slots", &cid, sizeof(cid))) > 0)
227 if ((OF_getencprop(node, "max-frequency", &cid, sizeof(cid))) > 0)
229 if (OF_hasprop(node, "no-1-8-v"))
231 if (OF_hasprop(node, "wp-inverted"))
232 sc->wp_inverted = true;
238 sdhci_fdt_attach(device_t dev)
240 struct sdhci_fdt_softc *sc = device_get_softc(dev);
241 struct sdhci_slot *slot;
242 int err, slots, rid, i;
248 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
250 if (sc->irq_res == NULL) {
251 device_printf(dev, "Can't allocate IRQ\n");
255 /* Scan all slots. */
256 slots = sc->num_slots; /* number of slots determined in probe(). */
258 for (i = 0; i < slots; i++) {
259 slot = &sc->slots[sc->num_slots];
261 /* Allocate memory. */
263 sc->mem_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
265 if (sc->mem_res[i] == NULL) {
267 "Can't allocate memory for slot %d\n", i);
271 slot->quirks = sc->quirks;
272 slot->caps = sc->caps;
273 slot->max_clk = sc->max_clk;
275 if (sdhci_init_slot(dev, slot, i) != 0)
280 device_printf(dev, "%d slot(s) allocated\n", sc->num_slots);
282 /* Activate the interrupt */
283 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
284 NULL, sdhci_fdt_intr, sc, &sc->intrhand);
286 device_printf(dev, "Cannot setup IRQ\n");
290 /* Process cards detection. */
291 for (i = 0; i < sc->num_slots; i++)
292 sdhci_start_slot(&sc->slots[i]);
298 sdhci_fdt_detach(device_t dev)
300 struct sdhci_fdt_softc *sc = device_get_softc(dev);
303 bus_generic_detach(dev);
304 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
305 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res),
308 for (i = 0; i < sc->num_slots; i++) {
309 sdhci_cleanup_slot(&sc->slots[i]);
310 bus_release_resource(dev, SYS_RES_MEMORY,
311 rman_get_rid(sc->mem_res[i]), sc->mem_res[i]);
317 static device_method_t sdhci_fdt_methods[] = {
319 DEVMETHOD(device_probe, sdhci_fdt_probe),
320 DEVMETHOD(device_attach, sdhci_fdt_attach),
321 DEVMETHOD(device_detach, sdhci_fdt_detach),
324 DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar),
325 DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar),
328 DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios),
329 DEVMETHOD(mmcbr_request, sdhci_generic_request),
330 DEVMETHOD(mmcbr_get_ro, sdhci_fdt_get_ro),
331 DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host),
332 DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host),
334 /* SDHCI registers accessors */
335 DEVMETHOD(sdhci_read_1, sdhci_fdt_read_1),
336 DEVMETHOD(sdhci_read_2, sdhci_fdt_read_2),
337 DEVMETHOD(sdhci_read_4, sdhci_fdt_read_4),
338 DEVMETHOD(sdhci_read_multi_4, sdhci_fdt_read_multi_4),
339 DEVMETHOD(sdhci_write_1, sdhci_fdt_write_1),
340 DEVMETHOD(sdhci_write_2, sdhci_fdt_write_2),
341 DEVMETHOD(sdhci_write_4, sdhci_fdt_write_4),
342 DEVMETHOD(sdhci_write_multi_4, sdhci_fdt_write_multi_4),
347 static driver_t sdhci_fdt_driver = {
350 sizeof(struct sdhci_fdt_softc),
352 static devclass_t sdhci_fdt_devclass;
354 DRIVER_MODULE(sdhci_fdt, simplebus, sdhci_fdt_driver, sdhci_fdt_devclass,
356 MODULE_DEPEND(sdhci_fdt, sdhci, 1, 1, 1);
358 MMC_DECLARE_BRIDGE(sdhci_fdt);