2 * Copyright (c) 2011 Nathan Whitehorn
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/module.h>
34 #include <sys/kernel.h>
36 #include <dev/ofw/openfirm.h>
37 #include <dev/ofw/ofw_pci.h>
38 #include <dev/ofw/ofw_bus.h>
39 #include <dev/ofw/ofw_bus_subr.h>
41 #include <dev/pci/pcivar.h>
42 #include <dev/pci/pcireg.h>
44 #include <machine/bus.h>
45 #include <machine/intr_machdep.h>
46 #include <machine/md_var.h>
47 #include <machine/pio.h>
48 #include <machine/resource.h>
55 #include <powerpc/ofw/ofw_pci.h>
62 static int ofw_pci_read_ivar(device_t, device_t, int,
64 static struct resource * ofw_pci_alloc_resource(device_t bus,
65 device_t child, int type, int *rid, u_long start,
66 u_long end, u_long count, u_int flags);
67 static int ofw_pci_release_resource(device_t bus, device_t child,
68 int type, int rid, struct resource *res);
69 static int ofw_pci_activate_resource(device_t bus, device_t child,
70 int type, int rid, struct resource *res);
71 static int ofw_pci_deactivate_resource(device_t bus,
72 device_t child, int type, int rid,
73 struct resource *res);
74 static int ofw_pci_adjust_resource(device_t bus, device_t child,
75 int type, struct resource *res, u_long start,
81 static int ofw_pci_maxslots(device_t);
82 static int ofw_pci_route_interrupt(device_t, device_t, int);
87 static phandle_t ofw_pci_get_node(device_t bus, device_t dev);
93 static int ofw_pci_nranges(phandle_t node);
94 static int ofw_pci_fill_ranges(phandle_t node, struct ofw_pci_range *ranges);
99 static device_method_t ofw_pci_methods[] = {
100 /* Device interface */
101 DEVMETHOD(device_attach, ofw_pci_attach),
104 DEVMETHOD(bus_print_child, bus_generic_print_child),
105 DEVMETHOD(bus_read_ivar, ofw_pci_read_ivar),
106 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
107 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
108 DEVMETHOD(bus_alloc_resource, ofw_pci_alloc_resource),
109 DEVMETHOD(bus_release_resource, ofw_pci_release_resource),
110 DEVMETHOD(bus_activate_resource, ofw_pci_activate_resource),
111 DEVMETHOD(bus_deactivate_resource, ofw_pci_deactivate_resource),
112 DEVMETHOD(bus_adjust_resource, ofw_pci_adjust_resource),
115 DEVMETHOD(pcib_maxslots, ofw_pci_maxslots),
116 DEVMETHOD(pcib_route_interrupt, ofw_pci_route_interrupt),
118 /* ofw_bus interface */
119 DEVMETHOD(ofw_bus_get_node, ofw_pci_get_node),
124 DEFINE_CLASS_0(ofw_pci, ofw_pci_driver, ofw_pci_methods, 0);
127 ofw_pci_init(device_t dev)
129 struct ofw_pci_softc *sc;
131 u_int32_t busrange[2];
132 struct ofw_pci_range *rp;
135 node = ofw_bus_get_node(dev);
136 sc = device_get_softc(dev);
137 sc->sc_initialized = 1;
139 if (OF_getprop(node, "reg", &sc->sc_pcir, sizeof(sc->sc_pcir)) == -1)
142 if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
147 sc->sc_bus = busrange[0];
149 if (sc->sc_quirks & OFW_PCI_QUIRK_RANGES_ON_CHILDREN) {
154 for (c = OF_child(node); c != 0; c = OF_peer(c)) {
155 n = ofw_pci_nranges(c);
159 if (sc->sc_nrange == 0)
161 sc->sc_range = malloc(sc->sc_nrange * sizeof(sc->sc_range[0]),
164 for (c = OF_child(node); c != 0; c = OF_peer(c)) {
165 n = ofw_pci_fill_ranges(c, &sc->sc_range[i]);
169 KASSERT(i == sc->sc_nrange, ("range count mismatch"));
171 sc->sc_nrange = ofw_pci_nranges(node);
172 if (sc->sc_nrange <= 0) {
173 device_printf(dev, "could not get ranges\n");
176 sc->sc_range = malloc(sc->sc_nrange * sizeof(sc->sc_range[0]),
178 ofw_pci_fill_ranges(node, sc->sc_range);
181 sc->sc_io_rman.rm_type = RMAN_ARRAY;
182 sc->sc_io_rman.rm_descr = "PCI I/O Ports";
183 error = rman_init(&sc->sc_io_rman);
185 device_printf(dev, "rman_init() failed. error = %d\n", error);
189 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
190 sc->sc_mem_rman.rm_descr = "PCI Memory";
191 error = rman_init(&sc->sc_mem_rman);
193 device_printf(dev, "rman_init() failed. error = %d\n", error);
197 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange &&
198 rp->pci_hi != 0; rp++) {
201 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
202 case OFW_PCI_PHYS_HI_SPACE_CONFIG:
204 case OFW_PCI_PHYS_HI_SPACE_IO:
205 error = rman_manage_region(&sc->sc_io_rman, rp->pci,
206 rp->pci + rp->size - 1);
208 case OFW_PCI_PHYS_HI_SPACE_MEM32:
209 case OFW_PCI_PHYS_HI_SPACE_MEM64:
210 error = rman_manage_region(&sc->sc_mem_rman, rp->pci,
211 rp->pci + rp->size - 1);
217 "rman_manage_region(%x, %#jx, %#jx) failed. "
218 "error = %d\n", rp->pci_hi &
219 OFW_PCI_PHYS_HI_SPACEMASK, rp->pci,
220 rp->pci + rp->size - 1, error);
225 ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(cell_t));
231 ofw_pci_attach(device_t dev)
233 struct ofw_pci_softc *sc;
236 sc = device_get_softc(dev);
237 if (!sc->sc_initialized) {
238 error = ofw_pci_init(dev);
243 device_add_child(dev, "pci", device_get_unit(dev));
244 return (bus_generic_attach(dev));
248 ofw_pci_maxslots(device_t dev)
251 return (PCI_SLOTMAX);
255 ofw_pci_route_interrupt(device_t bus, device_t dev, int pin)
257 struct ofw_pci_softc *sc;
258 struct ofw_pci_register reg;
259 uint32_t pintr, mintr[2];
263 sc = device_get_softc(bus);
266 /* Fabricate imap information in case this isn't an OFW device */
267 bzero(®, sizeof(reg));
268 reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) |
269 (pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) |
270 (pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT);
272 intrcells = ofw_bus_lookup_imap(ofw_bus_get_node(dev),
273 &sc->sc_pci_iinfo, ®, sizeof(reg), &pintr, sizeof(pintr),
274 mintr, sizeof(mintr), &iparent);
276 pintr = ofw_bus_map_intr(dev, iparent, intrcells, mintr);
280 /* Maybe it's a real interrupt, not an intpin */
284 device_printf(bus, "could not route pin %d for device %d.%d\n",
285 pin, pci_get_slot(dev), pci_get_function(dev));
286 return (PCI_INVALID_IRQ);
290 ofw_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
292 struct ofw_pci_softc *sc;
294 sc = device_get_softc(dev);
297 case PCIB_IVAR_DOMAIN:
298 *result = device_get_unit(dev);
301 *result = sc->sc_bus;
308 static struct resource *
309 ofw_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
310 u_long start, u_long end, u_long count, u_int flags)
312 struct ofw_pci_softc *sc;
317 needactivate = flags & RF_ACTIVE;
320 sc = device_get_softc(bus);
324 rm = &sc->sc_mem_rman;
328 rm = &sc->sc_io_rman;
332 return (bus_alloc_resource(bus, type, rid, start, end, count,
336 device_printf(bus, "unknown resource request from %s\n",
337 device_get_nameunit(child));
341 rv = rman_reserve_resource(rm, start, end, count, flags, child);
343 device_printf(bus, "failed to reserve resource for %s\n",
344 device_get_nameunit(child));
348 rman_set_rid(rv, *rid);
351 if (bus_activate_resource(child, type, *rid, rv) != 0) {
353 "failed to activate resource for %s\n",
354 device_get_nameunit(child));
355 rman_release_resource(rv);
364 ofw_pci_release_resource(device_t bus, device_t child, int type, int rid,
365 struct resource *res)
367 if (rman_get_flags(res) & RF_ACTIVE) {
368 int error = bus_deactivate_resource(child, type, rid, res);
373 return (rman_release_resource(res));
377 ofw_pci_activate_resource(device_t bus, device_t child, int type, int rid,
378 struct resource *res)
380 struct ofw_pci_softc *sc;
383 sc = device_get_softc(bus);
385 if (type == SYS_RES_IRQ) {
386 return (bus_activate_resource(bus, type, rid, res));
388 if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) {
389 struct ofw_pci_range *rp;
393 start = (vm_offset_t)rman_get_start(res);
396 * Map this through the ranges list
398 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange &&
399 rp->pci_hi != 0; rp++) {
400 if (start < rp->pci || start >= rp->pci + rp->size)
403 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
404 case OFW_PCI_PHYS_HI_SPACE_IO:
405 space = SYS_RES_IOPORT;
407 case OFW_PCI_PHYS_HI_SPACE_MEM32:
408 case OFW_PCI_PHYS_HI_SPACE_MEM64:
409 space = SYS_RES_MEMORY;
416 start += (rp->host - rp->pci);
422 printf("ofw_pci mapdev: start %zx, len %ld\n", start,
425 p = pmap_mapdev(start, (vm_size_t)rman_get_size(res));
429 rman_set_virtual(res, p);
430 rman_set_bustag(res, &bs_le_tag);
431 rman_set_bushandle(res, (u_long)p);
434 return (rman_activate_resource(res));
438 ofw_pci_deactivate_resource(device_t bus, device_t child, int type, int rid,
439 struct resource *res)
442 * If this is a memory resource, unmap it.
444 if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
447 psize = rman_get_size(res);
448 pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
451 return (rman_deactivate_resource(res));
455 ofw_pci_adjust_resource(device_t bus, device_t child, int type,
456 struct resource *res, u_long start, u_long end)
458 struct rman *rm = NULL;
459 struct ofw_pci_softc *sc = device_get_softc(bus);
461 KASSERT(!(rman_get_flags(res) & RF_ACTIVE),
462 ("active resources cannot be adjusted"));
463 if (rman_get_flags(res) & RF_ACTIVE)
468 rm = &sc->sc_mem_rman;
471 rm = &sc->sc_io_rman;
477 if (!rman_is_region_manager(res, rm))
480 return (rman_adjust_resource(res, start, end));
485 ofw_pci_get_node(device_t bus, device_t dev)
487 struct ofw_pci_softc *sc;
489 sc = device_get_softc(bus);
490 /* We only have one child, the PCI bus, which needs our own node. */
492 return (sc->sc_node);
496 ofw_pci_nranges(phandle_t node)
498 int host_address_cells = 1, pci_address_cells = 3, size_cells = 2;
499 ssize_t nbase_ranges;
501 OF_getprop(OF_parent(node), "#address-cells", &host_address_cells,
502 sizeof(host_address_cells));
503 OF_getprop(node, "#address-cells", &pci_address_cells,
504 sizeof(pci_address_cells));
505 OF_getprop(node, "#size-cells", &size_cells, sizeof(size_cells));
507 nbase_ranges = OF_getproplen(node, "ranges");
508 if (nbase_ranges <= 0)
511 return (nbase_ranges / sizeof(cell_t) /
512 (pci_address_cells + host_address_cells + size_cells));
516 ofw_pci_fill_ranges(phandle_t node, struct ofw_pci_range *ranges)
518 int host_address_cells = 1, pci_address_cells = 3, size_cells = 2;
520 ssize_t nbase_ranges;
524 OF_getprop(OF_parent(node), "#address-cells", &host_address_cells,
525 sizeof(host_address_cells));
526 OF_getprop(node, "#address-cells", &pci_address_cells,
527 sizeof(pci_address_cells));
528 OF_getprop(node, "#size-cells", &size_cells, sizeof(size_cells));
530 nbase_ranges = OF_getproplen(node, "ranges");
531 if (nbase_ranges <= 0)
533 nranges = nbase_ranges / sizeof(cell_t) /
534 (pci_address_cells + host_address_cells + size_cells);
536 base_ranges = malloc(nbase_ranges, M_DEVBUF, M_WAITOK);
537 OF_getprop(node, "ranges", base_ranges, nbase_ranges);
539 for (i = 0, j = 0; i < nranges; i++) {
540 ranges[i].pci_hi = base_ranges[j++];
542 for (k = 0; k < pci_address_cells - 1; k++) {
543 ranges[i].pci <<= 32;
544 ranges[i].pci |= base_ranges[j++];
547 for (k = 0; k < host_address_cells; k++) {
548 ranges[i].host <<= 32;
549 ranges[i].host |= base_ranges[j++];
552 for (k = 0; k < size_cells; k++) {
553 ranges[i].size <<= 32;
554 ranges[i].size |= base_ranges[j++];
558 free(base_ranges, M_DEVBUF);