1a3da9792SAttilio Rao /*-
24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause
3ebf5747bSPedro F. Giffuni *
4a3da9792SAttilio Rao * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
5a3da9792SAttilio Rao *
6a3da9792SAttilio Rao * Redistribution and use in source and binary forms, with or without
7a3da9792SAttilio Rao * modification, are permitted provided that the following conditions
8a3da9792SAttilio Rao * are met:
9a3da9792SAttilio Rao * 1. Redistributions of source code must retain the above copyright
10a3da9792SAttilio Rao * notice, this list of conditions and the following disclaimer.
11a3da9792SAttilio Rao * 2. Redistributions in binary form must reproduce the above copyright
12a3da9792SAttilio Rao * notice, this list of conditions and the following disclaimer in the
13a3da9792SAttilio Rao * documentation and/or other materials provided with the distribution.
14a3da9792SAttilio Rao *
15a3da9792SAttilio Rao * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16a3da9792SAttilio Rao * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17a3da9792SAttilio Rao * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18a3da9792SAttilio Rao * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19a3da9792SAttilio Rao * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20a3da9792SAttilio Rao * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21a3da9792SAttilio Rao * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22a3da9792SAttilio Rao * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23a3da9792SAttilio Rao * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24a3da9792SAttilio Rao * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25a3da9792SAttilio Rao * SUCH DAMAGE.
26a3da9792SAttilio Rao */
27a3da9792SAttilio Rao
28a3da9792SAttilio Rao /*
29a3da9792SAttilio Rao * Host to PCI and PCI to PCI bridge drivers that use the MP Table to route
30a3da9792SAttilio Rao * interrupts from PCI devices to I/O APICs.
31a3da9792SAttilio Rao */
32a3da9792SAttilio Rao
33a3da9792SAttilio Rao #include <sys/param.h>
34a3da9792SAttilio Rao #include <sys/systm.h>
35a3da9792SAttilio Rao #include <sys/bus.h>
36a3da9792SAttilio Rao #include <sys/kernel.h>
37a3da9792SAttilio Rao #include <sys/module.h>
3883c41143SJohn Baldwin #include <sys/rman.h>
39a3da9792SAttilio Rao
40a3da9792SAttilio Rao #include <dev/pci/pcireg.h>
41a3da9792SAttilio Rao #include <dev/pci/pcivar.h>
42a3da9792SAttilio Rao #include <dev/pci/pcib_private.h>
43fcb250f3SAttilio Rao #include <x86/mptable.h>
44435803f3SJohn Baldwin #include <x86/legacyvar.h>
45a3da9792SAttilio Rao #include <machine/pci_cfgreg.h>
46a3da9792SAttilio Rao
47a3da9792SAttilio Rao #include "pcib_if.h"
48a3da9792SAttilio Rao
49a3da9792SAttilio Rao /* Host to PCI bridge driver. */
50a3da9792SAttilio Rao
51a3da9792SAttilio Rao static int
mptable_hostb_probe(device_t dev)52a3da9792SAttilio Rao mptable_hostb_probe(device_t dev)
53a3da9792SAttilio Rao {
54a3da9792SAttilio Rao
55a3da9792SAttilio Rao if (pci_cfgregopen() == 0)
56a3da9792SAttilio Rao return (ENXIO);
57b076d8d5SJohn Baldwin if (mptable_pci_probe_table(legacy_get_pcibus(dev)) != 0)
58a3da9792SAttilio Rao return (ENXIO);
59a3da9792SAttilio Rao device_set_desc(dev, "MPTable Host-PCI bridge");
60a3da9792SAttilio Rao return (0);
61a3da9792SAttilio Rao }
62a3da9792SAttilio Rao
63a3da9792SAttilio Rao static int
mptable_hostb_attach(device_t dev)64a3da9792SAttilio Rao mptable_hostb_attach(device_t dev)
65a3da9792SAttilio Rao {
66a3da9792SAttilio Rao
6734ff71eeSJohn Baldwin #ifdef NEW_PCIB
6834ff71eeSJohn Baldwin mptable_pci_host_res_init(dev);
6934ff71eeSJohn Baldwin #endif
7018c72666SZbigniew Bodek device_add_child(dev, "pci", -1);
71a3da9792SAttilio Rao return (bus_generic_attach(dev));
72a3da9792SAttilio Rao }
73a3da9792SAttilio Rao
7434ff71eeSJohn Baldwin #ifdef NEW_PCIB
7534ff71eeSJohn Baldwin static int
mptable_is_isa_range(rman_res_t start,rman_res_t end)762dd1bdf1SJustin Hibbits mptable_is_isa_range(rman_res_t start, rman_res_t end)
7734ff71eeSJohn Baldwin {
7834ff71eeSJohn Baldwin
7934ff71eeSJohn Baldwin if (end >= 0x10000)
8034ff71eeSJohn Baldwin return (0);
8134ff71eeSJohn Baldwin if ((start & 0xfc00) != (end & 0xfc00))
8234ff71eeSJohn Baldwin return (0);
8334ff71eeSJohn Baldwin start &= ~0xfc00;
8434ff71eeSJohn Baldwin end &= ~0xfc00;
8534ff71eeSJohn Baldwin return (start >= 0x100 && end <= 0x3ff);
8634ff71eeSJohn Baldwin }
8734ff71eeSJohn Baldwin
8834ff71eeSJohn Baldwin static int
mptable_is_vga_range(rman_res_t start,rman_res_t end)892dd1bdf1SJustin Hibbits mptable_is_vga_range(rman_res_t start, rman_res_t end)
9034ff71eeSJohn Baldwin {
9134ff71eeSJohn Baldwin if (end >= 0x10000)
9234ff71eeSJohn Baldwin return (0);
9334ff71eeSJohn Baldwin if ((start & 0xfc00) != (end & 0xfc00))
9434ff71eeSJohn Baldwin return (0);
9534ff71eeSJohn Baldwin start &= ~0xfc00;
9634ff71eeSJohn Baldwin end &= ~0xfc00;
9734ff71eeSJohn Baldwin return (pci_is_vga_ioport_range(start, end));
9834ff71eeSJohn Baldwin }
9934ff71eeSJohn Baldwin
10034ff71eeSJohn Baldwin static struct resource *
mptable_hostb_alloc_resource(device_t dev,device_t child,int type,int * rid,rman_res_t start,rman_res_t end,rman_res_t count,u_int flags)10134ff71eeSJohn Baldwin mptable_hostb_alloc_resource(device_t dev, device_t child, int type, int *rid,
1022dd1bdf1SJustin Hibbits rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
10334ff71eeSJohn Baldwin {
10434ff71eeSJohn Baldwin struct mptable_hostb_softc *sc;
10534ff71eeSJohn Baldwin
1064edef187SJohn Baldwin #ifdef PCI_RES_BUS
1074edef187SJohn Baldwin if (type == PCI_RES_BUS)
1084edef187SJohn Baldwin return (pci_domain_alloc_bus(0, child, rid, start, end, count,
1094edef187SJohn Baldwin flags));
1104edef187SJohn Baldwin #endif
11134ff71eeSJohn Baldwin sc = device_get_softc(dev);
11234ff71eeSJohn Baldwin if (type == SYS_RES_IOPORT && start + count - 1 == end) {
11334ff71eeSJohn Baldwin if (mptable_is_isa_range(start, end)) {
11434ff71eeSJohn Baldwin switch (sc->sc_decodes_isa_io) {
11534ff71eeSJohn Baldwin case -1:
11634ff71eeSJohn Baldwin return (NULL);
11734ff71eeSJohn Baldwin case 1:
11834ff71eeSJohn Baldwin return (bus_generic_alloc_resource(dev, child,
11934ff71eeSJohn Baldwin type, rid, start, end, count, flags));
12034ff71eeSJohn Baldwin default:
12134ff71eeSJohn Baldwin break;
12234ff71eeSJohn Baldwin }
12334ff71eeSJohn Baldwin }
12434ff71eeSJohn Baldwin if (mptable_is_vga_range(start, end)) {
12534ff71eeSJohn Baldwin switch (sc->sc_decodes_vga_io) {
12634ff71eeSJohn Baldwin case -1:
12734ff71eeSJohn Baldwin return (NULL);
12834ff71eeSJohn Baldwin case 1:
12934ff71eeSJohn Baldwin return (bus_generic_alloc_resource(dev, child,
13034ff71eeSJohn Baldwin type, rid, start, end, count, flags));
13134ff71eeSJohn Baldwin default:
13234ff71eeSJohn Baldwin break;
13334ff71eeSJohn Baldwin }
13434ff71eeSJohn Baldwin }
13534ff71eeSJohn Baldwin }
13634ff71eeSJohn Baldwin start = hostb_alloc_start(type, start, end, count);
13734ff71eeSJohn Baldwin return (pcib_host_res_alloc(&sc->sc_host_res, child, type, rid, start,
13834ff71eeSJohn Baldwin end, count, flags));
13934ff71eeSJohn Baldwin }
14034ff71eeSJohn Baldwin
14134ff71eeSJohn Baldwin static int
mptable_hostb_adjust_resource(device_t dev,device_t child,struct resource * r,rman_res_t start,rman_res_t end)142*fef01f04SJohn Baldwin mptable_hostb_adjust_resource(device_t dev, device_t child,
1432dd1bdf1SJustin Hibbits struct resource *r, rman_res_t start, rman_res_t end)
14434ff71eeSJohn Baldwin {
14534ff71eeSJohn Baldwin struct mptable_hostb_softc *sc;
14634ff71eeSJohn Baldwin
1474edef187SJohn Baldwin #ifdef PCI_RES_BUS
148*fef01f04SJohn Baldwin if (rman_get_type(r) == PCI_RES_BUS)
1494edef187SJohn Baldwin return (pci_domain_adjust_bus(0, child, r, start, end));
1504edef187SJohn Baldwin #endif
15134ff71eeSJohn Baldwin sc = device_get_softc(dev);
152*fef01f04SJohn Baldwin return (pcib_host_res_adjust(&sc->sc_host_res, child, r, start, end));
15334ff71eeSJohn Baldwin }
15434ff71eeSJohn Baldwin #endif
15534ff71eeSJohn Baldwin
156a3da9792SAttilio Rao static device_method_t mptable_hostb_methods[] = {
157a3da9792SAttilio Rao /* Device interface */
158a3da9792SAttilio Rao DEVMETHOD(device_probe, mptable_hostb_probe),
159a3da9792SAttilio Rao DEVMETHOD(device_attach, mptable_hostb_attach),
160a3da9792SAttilio Rao DEVMETHOD(device_shutdown, bus_generic_shutdown),
161a3da9792SAttilio Rao DEVMETHOD(device_suspend, bus_generic_suspend),
162a3da9792SAttilio Rao DEVMETHOD(device_resume, bus_generic_resume),
163a3da9792SAttilio Rao
164a3da9792SAttilio Rao /* Bus interface */
165a3da9792SAttilio Rao DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar),
166a3da9792SAttilio Rao DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar),
16734ff71eeSJohn Baldwin #ifdef NEW_PCIB
16834ff71eeSJohn Baldwin DEVMETHOD(bus_alloc_resource, mptable_hostb_alloc_resource),
16934ff71eeSJohn Baldwin DEVMETHOD(bus_adjust_resource, mptable_hostb_adjust_resource),
17034ff71eeSJohn Baldwin #else
171a3da9792SAttilio Rao DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource),
172d2c9344fSJohn Baldwin DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
17334ff71eeSJohn Baldwin #endif
1744edef187SJohn Baldwin #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
1754edef187SJohn Baldwin DEVMETHOD(bus_release_resource, legacy_pcib_release_resource),
17631e15e53SJohn Baldwin DEVMETHOD(bus_activate_resource, legacy_pcib_activate_resource),
17731e15e53SJohn Baldwin DEVMETHOD(bus_deactivate_resource, legacy_pcib_deactivate_resource),
1784edef187SJohn Baldwin #else
179a3da9792SAttilio Rao DEVMETHOD(bus_release_resource, bus_generic_release_resource),
180a3da9792SAttilio Rao DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
181a3da9792SAttilio Rao DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
18231e15e53SJohn Baldwin #endif
183a3da9792SAttilio Rao DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
184a3da9792SAttilio Rao DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
185a3da9792SAttilio Rao
186a3da9792SAttilio Rao /* pcib interface */
187a3da9792SAttilio Rao DEVMETHOD(pcib_maxslots, legacy_pcib_maxslots),
188a3da9792SAttilio Rao DEVMETHOD(pcib_read_config, legacy_pcib_read_config),
189a3da9792SAttilio Rao DEVMETHOD(pcib_write_config, legacy_pcib_write_config),
190a3da9792SAttilio Rao DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
19184ca9aadSJohn Baldwin DEVMETHOD(pcib_alloc_msi, legacy_pcib_alloc_msi),
192a3da9792SAttilio Rao DEVMETHOD(pcib_release_msi, pcib_release_msi),
19384ca9aadSJohn Baldwin DEVMETHOD(pcib_alloc_msix, legacy_pcib_alloc_msix),
194a3da9792SAttilio Rao DEVMETHOD(pcib_release_msix, pcib_release_msix),
1950d95597cSJohn Baldwin DEVMETHOD(pcib_map_msi, legacy_pcib_map_msi),
196a3da9792SAttilio Rao
1974b7ec270SMarius Strobl DEVMETHOD_END
198a3da9792SAttilio Rao };
199a3da9792SAttilio Rao
20034ff71eeSJohn Baldwin DEFINE_CLASS_0(pcib, mptable_hostb_driver, mptable_hostb_methods,
20134ff71eeSJohn Baldwin sizeof(struct mptable_hostb_softc));
20280d2b3deSJohn Baldwin DRIVER_MODULE(mptable_pcib, legacy, mptable_hostb_driver, 0, 0);
203a3da9792SAttilio Rao
204a3da9792SAttilio Rao /* PCI to PCI bridge driver. */
205a3da9792SAttilio Rao
206a3da9792SAttilio Rao static int
mptable_pcib_probe(device_t dev)207a3da9792SAttilio Rao mptable_pcib_probe(device_t dev)
208a3da9792SAttilio Rao {
209a3da9792SAttilio Rao int bus;
210a3da9792SAttilio Rao
211a3da9792SAttilio Rao if ((pci_get_class(dev) != PCIC_BRIDGE) ||
212a3da9792SAttilio Rao (pci_get_subclass(dev) != PCIS_BRIDGE_PCI))
213a3da9792SAttilio Rao return (ENXIO);
214a3da9792SAttilio Rao bus = pci_read_config(dev, PCIR_SECBUS_1, 1);
215a3da9792SAttilio Rao if (bus == 0)
216a3da9792SAttilio Rao return (ENXIO);
217a3da9792SAttilio Rao if (mptable_pci_probe_table(bus) != 0)
218a3da9792SAttilio Rao return (ENXIO);
219a3da9792SAttilio Rao device_set_desc(dev, "MPTable PCI-PCI bridge");
220a3da9792SAttilio Rao return (-1000);
221a3da9792SAttilio Rao }
222a3da9792SAttilio Rao
223a3da9792SAttilio Rao static device_method_t mptable_pcib_pci_methods[] = {
224a3da9792SAttilio Rao /* Device interface */
225a3da9792SAttilio Rao DEVMETHOD(device_probe, mptable_pcib_probe),
226a3da9792SAttilio Rao
227a3da9792SAttilio Rao /* pcib interface */
228a3da9792SAttilio Rao DEVMETHOD(pcib_route_interrupt, mptable_pci_route_interrupt),
229a3da9792SAttilio Rao {0, 0}
230a3da9792SAttilio Rao };
231a3da9792SAttilio Rao
232a3da9792SAttilio Rao DEFINE_CLASS_1(pcib, mptable_pcib_driver, mptable_pcib_pci_methods,
233a3da9792SAttilio Rao sizeof(struct pcib_softc), pcib_driver);
23480d2b3deSJohn Baldwin DRIVER_MODULE(mptable_pcib, pci, mptable_pcib_driver, 0, 0);
235