1b2b3ffcdSSimon Schubert /*
2b2b3ffcdSSimon Schubert * Copyright 1998 Massachusetts Institute of Technology
3b2b3ffcdSSimon Schubert * Copyright (c) 2008 The DragonFly Project.
4b2b3ffcdSSimon Schubert *
5b2b3ffcdSSimon Schubert * Permission to use, copy, modify, and distribute this software and
6b2b3ffcdSSimon Schubert * its documentation for any purpose and without fee is hereby
7b2b3ffcdSSimon Schubert * granted, provided that both the above copyright notice and this
8b2b3ffcdSSimon Schubert * permission notice appear in all copies, that both the above
9b2b3ffcdSSimon Schubert * copyright notice and this permission notice appear in all
10b2b3ffcdSSimon Schubert * supporting documentation, and that the name of M.I.T. not be used
11b2b3ffcdSSimon Schubert * in advertising or publicity pertaining to distribution of the
12b2b3ffcdSSimon Schubert * software without specific, written prior permission. M.I.T. makes
13b2b3ffcdSSimon Schubert * no representations about the suitability of this software for any
14b2b3ffcdSSimon Schubert * purpose. It is provided "as is" without express or implied
15b2b3ffcdSSimon Schubert * warranty.
16b2b3ffcdSSimon Schubert *
17b2b3ffcdSSimon Schubert * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
18b2b3ffcdSSimon Schubert * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
19b2b3ffcdSSimon Schubert * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20b2b3ffcdSSimon Schubert * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
21b2b3ffcdSSimon Schubert * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22b2b3ffcdSSimon Schubert * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23b2b3ffcdSSimon Schubert * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
24b2b3ffcdSSimon Schubert * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25b2b3ffcdSSimon Schubert * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26b2b3ffcdSSimon Schubert * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
27b2b3ffcdSSimon Schubert * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28b2b3ffcdSSimon Schubert * SUCH DAMAGE.
29b2b3ffcdSSimon Schubert *
30b2b3ffcdSSimon Schubert * $FreeBSD: src/sys/i386/i386/nexus.c,v 1.26.2.10 2003/02/22 13:16:45 imp Exp $
31b2b3ffcdSSimon Schubert */
32b2b3ffcdSSimon Schubert
33b2b3ffcdSSimon Schubert /*
34b2b3ffcdSSimon Schubert * This code implements a `root nexus' for Intel Architecture
35b2b3ffcdSSimon Schubert * machines. The function of the root nexus is to serve as an
36b2b3ffcdSSimon Schubert * attachment point for both processors and buses, and to manage
37b2b3ffcdSSimon Schubert * resources which are common to all of them. In particular,
38b2b3ffcdSSimon Schubert * this code implements the core resource managers for interrupt
39b2b3ffcdSSimon Schubert * requests, DMA requests (which rightfully should be a part of the
40b2b3ffcdSSimon Schubert * ISA code but it's easier to do it here for now), I/O port addresses,
41b2b3ffcdSSimon Schubert * and I/O memory address space.
42b2b3ffcdSSimon Schubert */
43b2b3ffcdSSimon Schubert
44a6ae3d3bSSascha Wildner #include "use_pci.h"
45a6ae3d3bSSascha Wildner
46b2b3ffcdSSimon Schubert #include <sys/param.h>
47b2b3ffcdSSimon Schubert #include <sys/systm.h>
48b2b3ffcdSSimon Schubert #include <sys/bus.h>
49b2b3ffcdSSimon Schubert #include <sys/kernel.h>
50b2b3ffcdSSimon Schubert #include <sys/malloc.h>
51b2b3ffcdSSimon Schubert #include <sys/module.h>
52b2b3ffcdSSimon Schubert #include <sys/rman.h>
531b505979SSepherosa Ziehau #include <sys/interrupt.h>
54bef055abSSepherosa Ziehau #include <sys/machintr.h>
5597d69dfdSMarkus Pfeiffer #include <sys/linker.h>
56b2b3ffcdSSimon Schubert
57b2b3ffcdSSimon Schubert #include <machine/vmparam.h>
58b2b3ffcdSSimon Schubert #include <vm/vm.h>
59b2b3ffcdSSimon Schubert #include <vm/pmap.h>
60b2b3ffcdSSimon Schubert #include <machine/pmap.h>
61b2b3ffcdSSimon Schubert
62b2b3ffcdSSimon Schubert #include <machine/nexusvar.h>
63b2b3ffcdSSimon Schubert #include <machine/smp.h>
64451af8d9SSepherosa Ziehau #include <machine/intr_machdep.h>
657831621fSSepherosa Ziehau #include <machine_base/apic/lapic.h>
66ed4d621dSSepherosa Ziehau #include <machine_base/apic/ioapic.h>
6797d69dfdSMarkus Pfeiffer #include <machine/pc/bios.h>
6897d69dfdSMarkus Pfeiffer #include <machine/metadata.h>
69b2b3ffcdSSimon Schubert
70a6ae3d3bSSascha Wildner #if NPCI > 0
714234567cSSepherosa Ziehau #include "pcib_if.h"
72a6ae3d3bSSascha Wildner #endif
734234567cSSepherosa Ziehau
7497d69dfdSMarkus Pfeiffer #define ELF_KERN_STR ("elf"__XSTRING(__ELF_WORD_SIZE)" kernel")
7597d69dfdSMarkus Pfeiffer
76b2b3ffcdSSimon Schubert static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
77b2b3ffcdSSimon Schubert struct nexus_device {
78b2b3ffcdSSimon Schubert struct resource_list nx_resources;
79b2b3ffcdSSimon Schubert int nx_pcibus;
80b2b3ffcdSSimon Schubert };
81b2b3ffcdSSimon Schubert
82b2b3ffcdSSimon Schubert #define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
83b2b3ffcdSSimon Schubert
847e370202SSepherosa Ziehau static struct rman irq_rman[MAXCPU], drq_rman, port_rman, mem_rman;
85b2b3ffcdSSimon Schubert
86b2b3ffcdSSimon Schubert static int nexus_probe(device_t);
87b2b3ffcdSSimon Schubert static int nexus_attach(device_t);
88b2b3ffcdSSimon Schubert static int nexus_print_all_resources(device_t dev);
89b2b3ffcdSSimon Schubert static int nexus_print_child(device_t, device_t);
90b2b3ffcdSSimon Schubert static device_t nexus_add_child(device_t bus, device_t parent, int order,
91b2b3ffcdSSimon Schubert const char *name, int unit);
92b2b3ffcdSSimon Schubert static struct resource *nexus_alloc_resource(device_t, device_t, int, int *,
934f7fe8c7SSepherosa Ziehau u_long, u_long, u_long, u_int, int);
94b2b3ffcdSSimon Schubert static int nexus_read_ivar(device_t, device_t, int, uintptr_t *);
95b2b3ffcdSSimon Schubert static int nexus_write_ivar(device_t, device_t, int, uintptr_t);
96b2b3ffcdSSimon Schubert static int nexus_activate_resource(device_t, device_t, int, int,
97b2b3ffcdSSimon Schubert struct resource *);
98b2b3ffcdSSimon Schubert static int nexus_deactivate_resource(device_t, device_t, int, int,
99b2b3ffcdSSimon Schubert struct resource *);
100b2b3ffcdSSimon Schubert static int nexus_release_resource(device_t, device_t, int, int,
101b2b3ffcdSSimon Schubert struct resource *);
102bef055abSSepherosa Ziehau static int nexus_config_intr(device_t, device_t, int, enum intr_trigger,
103bef055abSSepherosa Ziehau enum intr_polarity);
104b2b3ffcdSSimon Schubert static int nexus_setup_intr(device_t, device_t, struct resource *, int flags,
1050e6f0e28SSepherosa Ziehau void (*)(void *), void *, void **, lwkt_serialize_t,
1060e6f0e28SSepherosa Ziehau const char *);
107b2b3ffcdSSimon Schubert static int nexus_teardown_intr(device_t, device_t, struct resource *,
108b2b3ffcdSSimon Schubert void *);
109b47b3275SSepherosa Ziehau static int nexus_set_resource(device_t, device_t, int, int, u_long, u_long,
110b47b3275SSepherosa Ziehau int);
111b2b3ffcdSSimon Schubert static int nexus_get_resource(device_t, device_t, int, int, u_long *, u_long *);
112b2b3ffcdSSimon Schubert static void nexus_delete_resource(device_t, device_t, int, int);
113b2b3ffcdSSimon Schubert
114a6ae3d3bSSascha Wildner #if NPCI > 0
1154234567cSSepherosa Ziehau static int nexus_alloc_msi(device_t, device_t, int, int, int *, int);
1164234567cSSepherosa Ziehau static int nexus_release_msi(device_t, device_t, int, int *, int);
1174234567cSSepherosa Ziehau static int nexus_map_msi(device_t, device_t, int, uint64_t *, uint32_t *, int);
118f7c8efd4SSepherosa Ziehau static int nexus_alloc_msix(device_t, device_t, int *, int);
119f7c8efd4SSepherosa Ziehau static int nexus_release_msix(device_t, device_t, int, int);
120a6ae3d3bSSascha Wildner #endif
1214234567cSSepherosa Ziehau
122b2b3ffcdSSimon Schubert /*
123b2b3ffcdSSimon Schubert * The device_identify method will cause nexus to automatically associate
124b2b3ffcdSSimon Schubert * and attach to the root bus.
125b2b3ffcdSSimon Schubert */
126b2b3ffcdSSimon Schubert static device_method_t nexus_methods[] = {
127b2b3ffcdSSimon Schubert /* Device interface */
128b2b3ffcdSSimon Schubert DEVMETHOD(device_identify, bus_generic_identify),
129b2b3ffcdSSimon Schubert DEVMETHOD(device_probe, nexus_probe),
130b2b3ffcdSSimon Schubert DEVMETHOD(device_attach, nexus_attach),
131b2b3ffcdSSimon Schubert DEVMETHOD(device_detach, bus_generic_detach),
132b2b3ffcdSSimon Schubert DEVMETHOD(device_shutdown, bus_generic_shutdown),
133b2b3ffcdSSimon Schubert DEVMETHOD(device_suspend, bus_generic_suspend),
134b2b3ffcdSSimon Schubert DEVMETHOD(device_resume, bus_generic_resume),
135b2b3ffcdSSimon Schubert
136b2b3ffcdSSimon Schubert /* Bus interface */
137b2b3ffcdSSimon Schubert DEVMETHOD(bus_print_child, nexus_print_child),
138b2b3ffcdSSimon Schubert DEVMETHOD(bus_add_child, nexus_add_child),
139b2b3ffcdSSimon Schubert DEVMETHOD(bus_read_ivar, nexus_read_ivar),
140b2b3ffcdSSimon Schubert DEVMETHOD(bus_write_ivar, nexus_write_ivar),
141b2b3ffcdSSimon Schubert DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
142b2b3ffcdSSimon Schubert DEVMETHOD(bus_release_resource, nexus_release_resource),
143b2b3ffcdSSimon Schubert DEVMETHOD(bus_activate_resource, nexus_activate_resource),
144b2b3ffcdSSimon Schubert DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
145bef055abSSepherosa Ziehau DEVMETHOD(bus_config_intr, nexus_config_intr),
146b2b3ffcdSSimon Schubert DEVMETHOD(bus_setup_intr, nexus_setup_intr),
147b2b3ffcdSSimon Schubert DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
148b2b3ffcdSSimon Schubert DEVMETHOD(bus_set_resource, nexus_set_resource),
149b2b3ffcdSSimon Schubert DEVMETHOD(bus_get_resource, nexus_get_resource),
150b2b3ffcdSSimon Schubert DEVMETHOD(bus_delete_resource, nexus_delete_resource),
151b2b3ffcdSSimon Schubert
152a6ae3d3bSSascha Wildner #if NPCI > 0
1534234567cSSepherosa Ziehau DEVMETHOD(pcib_alloc_msi, nexus_alloc_msi),
1544234567cSSepherosa Ziehau DEVMETHOD(pcib_release_msi, nexus_release_msi),
1554234567cSSepherosa Ziehau DEVMETHOD(pcib_map_msi, nexus_map_msi),
156f7c8efd4SSepherosa Ziehau DEVMETHOD(pcib_alloc_msix, nexus_alloc_msix),
157f7c8efd4SSepherosa Ziehau DEVMETHOD(pcib_release_msix, nexus_release_msix),
158a6ae3d3bSSascha Wildner #endif
1594234567cSSepherosa Ziehau
160d3c9c58eSSascha Wildner DEVMETHOD_END
161b2b3ffcdSSimon Schubert };
162b2b3ffcdSSimon Schubert
163b2b3ffcdSSimon Schubert static driver_t nexus_driver = {
164b2b3ffcdSSimon Schubert "nexus",
165b2b3ffcdSSimon Schubert nexus_methods,
166b2b3ffcdSSimon Schubert 1, /* no softc */
167b2b3ffcdSSimon Schubert };
168b2b3ffcdSSimon Schubert static devclass_t nexus_devclass;
169b2b3ffcdSSimon Schubert
170aa2b9d05SSascha Wildner DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, NULL, NULL);
171b2b3ffcdSSimon Schubert
172b2b3ffcdSSimon Schubert static int
nexus_probe(device_t dev)173b2b3ffcdSSimon Schubert nexus_probe(device_t dev)
174b2b3ffcdSSimon Schubert {
1757e370202SSepherosa Ziehau int cpuid;
1767e370202SSepherosa Ziehau
177b2b3ffcdSSimon Schubert device_quiet(dev); /* suppress attach message for neatness */
178b2b3ffcdSSimon Schubert
1797e370202SSepherosa Ziehau for (cpuid = 0; cpuid < ncpus; ++cpuid) {
1807e370202SSepherosa Ziehau struct rman *rm = &irq_rman[cpuid];
1817e370202SSepherosa Ziehau
1827e370202SSepherosa Ziehau rm->rm_start = 0;
183b3cf468eSSepherosa Ziehau rm->rm_end = IDT_HWI_VECTORS - 1;
1847e370202SSepherosa Ziehau rm->rm_type = RMAN_ARRAY;
1857e370202SSepherosa Ziehau rm->rm_descr = "Interrupt request lines";
1869a4bd8f3SSepherosa Ziehau
187981239a7SSepherosa Ziehau if (rman_init(rm, cpuid))
188293ad79aSSascha Wildner panic("%s rman_init", __func__);
189981239a7SSepherosa Ziehau MachIntrABI.rman_setup(rm);
1907e370202SSepherosa Ziehau }
191b2b3ffcdSSimon Schubert
192b2b3ffcdSSimon Schubert /*
193b2b3ffcdSSimon Schubert * ISA DMA on PCI systems is implemented in the ISA part of each
194b2b3ffcdSSimon Schubert * PCI->ISA bridge and the channels can be duplicated if there are
195b2b3ffcdSSimon Schubert * multiple bridges. (eg: laptops with docking stations)
196b2b3ffcdSSimon Schubert */
197b2b3ffcdSSimon Schubert drq_rman.rm_start = 0;
198b2b3ffcdSSimon Schubert drq_rman.rm_end = 7;
199b2b3ffcdSSimon Schubert drq_rman.rm_type = RMAN_ARRAY;
200b2b3ffcdSSimon Schubert drq_rman.rm_descr = "DMA request lines";
201b2b3ffcdSSimon Schubert /* XXX drq 0 not available on some machines */
20265cd6ac8SSepherosa Ziehau if (rman_init(&drq_rman, -1)
203b2b3ffcdSSimon Schubert || rman_manage_region(&drq_rman,
204b2b3ffcdSSimon Schubert drq_rman.rm_start, drq_rman.rm_end))
205293ad79aSSascha Wildner panic("%s drq_rman", __func__);
206b2b3ffcdSSimon Schubert
207b2b3ffcdSSimon Schubert /*
208b2b3ffcdSSimon Schubert * However, IO ports and Memory truely are global at this level,
209b2b3ffcdSSimon Schubert * as are APIC interrupts (however many IO APICS there turn out
210b2b3ffcdSSimon Schubert * to be on large systems..)
211b2b3ffcdSSimon Schubert */
212b2b3ffcdSSimon Schubert port_rman.rm_start = 0;
213b2b3ffcdSSimon Schubert port_rman.rm_end = 0xffff;
214b2b3ffcdSSimon Schubert port_rman.rm_type = RMAN_ARRAY;
215b2b3ffcdSSimon Schubert port_rman.rm_descr = "I/O ports";
21665cd6ac8SSepherosa Ziehau if (rman_init(&port_rman, -1)
217b2b3ffcdSSimon Schubert || rman_manage_region(&port_rman, 0, 0xffff))
218293ad79aSSascha Wildner panic("%s port_rman", __func__);
219b2b3ffcdSSimon Schubert
220b2b3ffcdSSimon Schubert mem_rman.rm_start = 0;
221b2b3ffcdSSimon Schubert mem_rman.rm_end = ~0u;
222b2b3ffcdSSimon Schubert mem_rman.rm_type = RMAN_ARRAY;
223b2b3ffcdSSimon Schubert mem_rman.rm_descr = "I/O memory addresses";
22465cd6ac8SSepherosa Ziehau if (rman_init(&mem_rman, -1)
225b2b3ffcdSSimon Schubert || rman_manage_region(&mem_rman, 0, ~0))
226293ad79aSSascha Wildner panic("%s mem_rman", __func__);
227b2b3ffcdSSimon Schubert
228b2b3ffcdSSimon Schubert return bus_generic_probe(dev);
229b2b3ffcdSSimon Schubert }
230b2b3ffcdSSimon Schubert
231b2b3ffcdSSimon Schubert static int
nexus_attach(device_t dev)232b2b3ffcdSSimon Schubert nexus_attach(device_t dev)
233b2b3ffcdSSimon Schubert {
234b2b3ffcdSSimon Schubert device_t child;
235b2b3ffcdSSimon Schubert
236b2b3ffcdSSimon Schubert /*
237b2b3ffcdSSimon Schubert * First, let our child driver's identify any child devices that
238b2b3ffcdSSimon Schubert * they can find. Once that is done attach any devices that we
239b2b3ffcdSSimon Schubert * found.
240b2b3ffcdSSimon Schubert */
241b2b3ffcdSSimon Schubert #if 0 /* FUTURE */
242b2b3ffcdSSimon Schubert bus_generic_probe(dev);
243b2b3ffcdSSimon Schubert #endif
244b2b3ffcdSSimon Schubert bus_generic_attach(dev);
245b2b3ffcdSSimon Schubert
246b2b3ffcdSSimon Schubert /*
2476311ed9eSSascha Wildner * And if we didn't see ISA on a pci bridge, create a
2486311ed9eSSascha Wildner * connection point now so it shows up "on motherboard".
249b2b3ffcdSSimon Schubert */
250b2b3ffcdSSimon Schubert if (!devclass_get_device(devclass_find("isa"), 0)) {
251b2b3ffcdSSimon Schubert child = BUS_ADD_CHILD(dev, dev, 0, "isa", 0);
252b2b3ffcdSSimon Schubert if (child == NULL)
253293ad79aSSascha Wildner panic("%s isa", __func__);
254b2b3ffcdSSimon Schubert device_probe_and_attach(child);
255b2b3ffcdSSimon Schubert }
256b2b3ffcdSSimon Schubert
257b2b3ffcdSSimon Schubert return 0;
258b2b3ffcdSSimon Schubert }
259b2b3ffcdSSimon Schubert
260b2b3ffcdSSimon Schubert static int
nexus_print_all_resources(device_t dev)261b2b3ffcdSSimon Schubert nexus_print_all_resources(device_t dev)
262b2b3ffcdSSimon Schubert {
263b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(dev);
264b2b3ffcdSSimon Schubert struct resource_list *rl = &ndev->nx_resources;
265b2b3ffcdSSimon Schubert int retval = 0;
266b2b3ffcdSSimon Schubert
267b2b3ffcdSSimon Schubert if (SLIST_FIRST(rl) || ndev->nx_pcibus != -1)
268b2b3ffcdSSimon Schubert retval += kprintf(" at");
269b2b3ffcdSSimon Schubert
270b2b3ffcdSSimon Schubert retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
271b2b3ffcdSSimon Schubert retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
272b2b3ffcdSSimon Schubert retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
273b2b3ffcdSSimon Schubert
274b2b3ffcdSSimon Schubert return retval;
275b2b3ffcdSSimon Schubert }
276b2b3ffcdSSimon Schubert
277b2b3ffcdSSimon Schubert static int
nexus_print_child(device_t bus,device_t child)278b2b3ffcdSSimon Schubert nexus_print_child(device_t bus, device_t child)
279b2b3ffcdSSimon Schubert {
280b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(child);
281b2b3ffcdSSimon Schubert int retval = 0;
282b2b3ffcdSSimon Schubert
283b2b3ffcdSSimon Schubert retval += bus_print_child_header(bus, child);
284b2b3ffcdSSimon Schubert retval += nexus_print_all_resources(child);
285b2b3ffcdSSimon Schubert if (ndev->nx_pcibus != -1)
286b2b3ffcdSSimon Schubert retval += kprintf(" pcibus %d", ndev->nx_pcibus);
287b2b3ffcdSSimon Schubert retval += kprintf(" on motherboard\n");
288b2b3ffcdSSimon Schubert
289b2b3ffcdSSimon Schubert return (retval);
290b2b3ffcdSSimon Schubert }
291b2b3ffcdSSimon Schubert
292b2b3ffcdSSimon Schubert static device_t
nexus_add_child(device_t bus,device_t parent,int order,const char * name,int unit)293b2b3ffcdSSimon Schubert nexus_add_child(device_t bus, device_t parent, int order,
294b2b3ffcdSSimon Schubert const char *name, int unit)
295b2b3ffcdSSimon Schubert {
296b2b3ffcdSSimon Schubert device_t child;
297b2b3ffcdSSimon Schubert struct nexus_device *ndev;
298b2b3ffcdSSimon Schubert
299b2b3ffcdSSimon Schubert ndev = kmalloc(sizeof(struct nexus_device), M_NEXUSDEV, M_INTWAIT|M_ZERO);
300b2b3ffcdSSimon Schubert resource_list_init(&ndev->nx_resources);
301b2b3ffcdSSimon Schubert ndev->nx_pcibus = -1;
302b2b3ffcdSSimon Schubert
303b2b3ffcdSSimon Schubert child = device_add_child_ordered(parent, order, name, unit);
304b2b3ffcdSSimon Schubert
305b2b3ffcdSSimon Schubert /* should we free this in nexus_child_detached? */
306b2b3ffcdSSimon Schubert device_set_ivars(child, ndev);
307b2b3ffcdSSimon Schubert
308b2b3ffcdSSimon Schubert return(child);
309b2b3ffcdSSimon Schubert }
310b2b3ffcdSSimon Schubert
311b2b3ffcdSSimon Schubert static int
nexus_read_ivar(device_t dev,device_t child,int which,uintptr_t * result)312b2b3ffcdSSimon Schubert nexus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
313b2b3ffcdSSimon Schubert {
314b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(child);
315b2b3ffcdSSimon Schubert
316b2b3ffcdSSimon Schubert switch (which) {
317b2b3ffcdSSimon Schubert case NEXUS_IVAR_PCIBUS:
318b2b3ffcdSSimon Schubert *result = ndev->nx_pcibus;
319b2b3ffcdSSimon Schubert break;
320b2b3ffcdSSimon Schubert default:
321b2b3ffcdSSimon Schubert return ENOENT;
322b2b3ffcdSSimon Schubert }
323b2b3ffcdSSimon Schubert return 0;
324b2b3ffcdSSimon Schubert }
325b2b3ffcdSSimon Schubert
326b2b3ffcdSSimon Schubert static int
nexus_write_ivar(device_t dev,device_t child,int which,uintptr_t value)327b2b3ffcdSSimon Schubert nexus_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
328b2b3ffcdSSimon Schubert {
329b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(child);
330b2b3ffcdSSimon Schubert
331b2b3ffcdSSimon Schubert switch (which) {
332b2b3ffcdSSimon Schubert case NEXUS_IVAR_PCIBUS:
333b2b3ffcdSSimon Schubert ndev->nx_pcibus = value;
334b2b3ffcdSSimon Schubert break;
335b2b3ffcdSSimon Schubert default:
336b2b3ffcdSSimon Schubert return ENOENT;
337b2b3ffcdSSimon Schubert }
338b2b3ffcdSSimon Schubert return 0;
339b2b3ffcdSSimon Schubert }
340b2b3ffcdSSimon Schubert
341b2b3ffcdSSimon Schubert /*
342b2b3ffcdSSimon Schubert * Allocate a resource on behalf of child. NB: child is usually going to be a
343b2b3ffcdSSimon Schubert * child of one of our descendants, not a direct child of nexus0.
344b2b3ffcdSSimon Schubert * (Exceptions include npx.)
345b2b3ffcdSSimon Schubert */
346b2b3ffcdSSimon Schubert static struct resource *
nexus_alloc_resource(device_t bus,device_t child,int type,int * rid,u_long start,u_long end,u_long count,u_int flags,int cpuid)347b2b3ffcdSSimon Schubert nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
3484f7fe8c7SSepherosa Ziehau u_long start, u_long end, u_long count, u_int flags, int cpuid)
349b2b3ffcdSSimon Schubert {
350b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(child);
351b2b3ffcdSSimon Schubert struct resource *rv;
352b2b3ffcdSSimon Schubert struct resource_list_entry *rle;
353b2b3ffcdSSimon Schubert struct rman *rm;
354b2b3ffcdSSimon Schubert int needactivate = flags & RF_ACTIVE;
355b2b3ffcdSSimon Schubert
356b2b3ffcdSSimon Schubert /*
357b2b3ffcdSSimon Schubert * If this is an allocation of the "default" range for a given RID, and
358b2b3ffcdSSimon Schubert * we know what the resources for this device are (ie. they aren't maintained
359b2b3ffcdSSimon Schubert * by a child bus), then work out the start/end values.
360b2b3ffcdSSimon Schubert */
361b2b3ffcdSSimon Schubert if ((start == 0UL) && (end == ~0UL) && (count == 1)) {
362b2b3ffcdSSimon Schubert if (ndev == NULL)
363b2b3ffcdSSimon Schubert return(NULL);
364b2b3ffcdSSimon Schubert rle = resource_list_find(&ndev->nx_resources, type, *rid);
365b2b3ffcdSSimon Schubert if (rle == NULL)
366b2b3ffcdSSimon Schubert return(NULL);
367b2b3ffcdSSimon Schubert start = rle->start;
368b2b3ffcdSSimon Schubert end = rle->end;
369b2b3ffcdSSimon Schubert count = rle->count;
3704f7fe8c7SSepherosa Ziehau cpuid = rle->cpuid;
371b2b3ffcdSSimon Schubert }
372b2b3ffcdSSimon Schubert
373b2b3ffcdSSimon Schubert flags &= ~RF_ACTIVE;
374b2b3ffcdSSimon Schubert
375b2b3ffcdSSimon Schubert switch (type) {
376b2b3ffcdSSimon Schubert case SYS_RES_IRQ:
3770f58fbd9SSepherosa Ziehau KASSERT(cpuid >= 0 && cpuid < ncpus,
378ed20d0e3SSascha Wildner ("nexus invalid cpuid: %d", cpuid));
3797e370202SSepherosa Ziehau rm = &irq_rman[cpuid];
380b2b3ffcdSSimon Schubert break;
381b2b3ffcdSSimon Schubert
382b2b3ffcdSSimon Schubert case SYS_RES_DRQ:
383b2b3ffcdSSimon Schubert rm = &drq_rman;
384b2b3ffcdSSimon Schubert break;
385b2b3ffcdSSimon Schubert
386b2b3ffcdSSimon Schubert case SYS_RES_IOPORT:
387b2b3ffcdSSimon Schubert rm = &port_rman;
388b2b3ffcdSSimon Schubert break;
389b2b3ffcdSSimon Schubert
390b2b3ffcdSSimon Schubert case SYS_RES_MEMORY:
391b2b3ffcdSSimon Schubert rm = &mem_rman;
392b2b3ffcdSSimon Schubert break;
393b2b3ffcdSSimon Schubert
394b2b3ffcdSSimon Schubert default:
395b2b3ffcdSSimon Schubert return 0;
396b2b3ffcdSSimon Schubert }
397b2b3ffcdSSimon Schubert
398b2b3ffcdSSimon Schubert rv = rman_reserve_resource(rm, start, end, count, flags, child);
3994090d6ffSSascha Wildner if (rv == NULL)
400b2b3ffcdSSimon Schubert return 0;
401a4e4d72fSSepherosa Ziehau rman_set_rid(rv, *rid);
402b2b3ffcdSSimon Schubert
403b2b3ffcdSSimon Schubert if (type == SYS_RES_MEMORY) {
404*03594fd8SSascha Wildner rman_set_bustag(rv, X86_64_BUS_SPACE_MEM);
405b2b3ffcdSSimon Schubert } else if (type == SYS_RES_IOPORT) {
406*03594fd8SSascha Wildner rman_set_bustag(rv, X86_64_BUS_SPACE_IO);
407b2b3ffcdSSimon Schubert rman_set_bushandle(rv, rv->r_start);
408b2b3ffcdSSimon Schubert }
409b2b3ffcdSSimon Schubert
410b2b3ffcdSSimon Schubert if (needactivate) {
411b2b3ffcdSSimon Schubert if (bus_activate_resource(child, type, *rid, rv)) {
412b2b3ffcdSSimon Schubert rman_release_resource(rv);
413b2b3ffcdSSimon Schubert return 0;
414b2b3ffcdSSimon Schubert }
415b2b3ffcdSSimon Schubert }
416b2b3ffcdSSimon Schubert
417b2b3ffcdSSimon Schubert return rv;
418b2b3ffcdSSimon Schubert }
419b2b3ffcdSSimon Schubert
420b2b3ffcdSSimon Schubert static int
nexus_activate_resource(device_t bus,device_t child,int type,int rid,struct resource * r)421b2b3ffcdSSimon Schubert nexus_activate_resource(device_t bus, device_t child, int type, int rid,
422b2b3ffcdSSimon Schubert struct resource *r)
423b2b3ffcdSSimon Schubert {
424b2b3ffcdSSimon Schubert /*
425b2b3ffcdSSimon Schubert * If this is a memory resource, map it into the kernel.
426b2b3ffcdSSimon Schubert */
427*03594fd8SSascha Wildner if (rman_get_bustag(r) == X86_64_BUS_SPACE_MEM) {
428b2b3ffcdSSimon Schubert caddr_t vaddr = 0;
429b2b3ffcdSSimon Schubert
430b2b3ffcdSSimon Schubert if (rman_get_end(r) < 1024 * 1024) {
431b2b3ffcdSSimon Schubert /*
432b2b3ffcdSSimon Schubert * The first 1Mb is mapped at KERNBASE.
433b2b3ffcdSSimon Schubert */
434b2b3ffcdSSimon Schubert vaddr = (caddr_t)(uintptr_t)(KERNBASE + rman_get_start(r));
435b2b3ffcdSSimon Schubert } else {
436b2b3ffcdSSimon Schubert u_int64_t paddr;
437b2b3ffcdSSimon Schubert u_int64_t psize;
438b2b3ffcdSSimon Schubert u_int32_t poffs;
439b2b3ffcdSSimon Schubert
440b2b3ffcdSSimon Schubert paddr = rman_get_start(r);
441b2b3ffcdSSimon Schubert psize = rman_get_size(r);
442b2b3ffcdSSimon Schubert
443b2b3ffcdSSimon Schubert poffs = paddr - trunc_page(paddr);
444b2b3ffcdSSimon Schubert vaddr = (caddr_t) pmap_mapdev(paddr-poffs, psize+poffs) + poffs;
445b2b3ffcdSSimon Schubert }
446b2b3ffcdSSimon Schubert rman_set_virtual(r, vaddr);
447b2b3ffcdSSimon Schubert /* IBM-PC: the type of bus_space_handle_t is u_int */
448b2b3ffcdSSimon Schubert rman_set_bushandle(r, (bus_space_handle_t) vaddr);
449b2b3ffcdSSimon Schubert }
450b2b3ffcdSSimon Schubert return (rman_activate_resource(r));
451b2b3ffcdSSimon Schubert }
452b2b3ffcdSSimon Schubert
453b2b3ffcdSSimon Schubert static int
nexus_deactivate_resource(device_t bus,device_t child,int type,int rid,struct resource * r)454b2b3ffcdSSimon Schubert nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
455b2b3ffcdSSimon Schubert struct resource *r)
456b2b3ffcdSSimon Schubert {
457b2b3ffcdSSimon Schubert /*
458b2b3ffcdSSimon Schubert * If this is a memory resource, unmap it.
459b2b3ffcdSSimon Schubert */
460*03594fd8SSascha Wildner if ((rman_get_bustag(r) == X86_64_BUS_SPACE_MEM) &&
461b2b3ffcdSSimon Schubert (rman_get_end(r) >= 1024 * 1024)) {
462b2b3ffcdSSimon Schubert u_int32_t psize;
463b2b3ffcdSSimon Schubert
464b2b3ffcdSSimon Schubert psize = rman_get_size(r);
465b2b3ffcdSSimon Schubert pmap_unmapdev((vm_offset_t)rman_get_virtual(r), psize);
466b2b3ffcdSSimon Schubert }
467b2b3ffcdSSimon Schubert
468b2b3ffcdSSimon Schubert return (rman_deactivate_resource(r));
469b2b3ffcdSSimon Schubert }
470b2b3ffcdSSimon Schubert
471b2b3ffcdSSimon Schubert static int
nexus_release_resource(device_t bus,device_t child,int type,int rid,struct resource * r)472b2b3ffcdSSimon Schubert nexus_release_resource(device_t bus, device_t child, int type, int rid,
473b2b3ffcdSSimon Schubert struct resource *r)
474b2b3ffcdSSimon Schubert {
475b2b3ffcdSSimon Schubert if (rman_get_flags(r) & RF_ACTIVE) {
476b2b3ffcdSSimon Schubert int error = bus_deactivate_resource(child, type, rid, r);
477b2b3ffcdSSimon Schubert if (error)
478b2b3ffcdSSimon Schubert return error;
479b2b3ffcdSSimon Schubert }
480b2b3ffcdSSimon Schubert return (rman_release_resource(r));
481b2b3ffcdSSimon Schubert }
482b2b3ffcdSSimon Schubert
483bef055abSSepherosa Ziehau static int
nexus_config_intr(device_t bus,device_t chile,int irq,enum intr_trigger trig,enum intr_polarity pola)484bef055abSSepherosa Ziehau nexus_config_intr(device_t bus, device_t chile, int irq,
485bef055abSSepherosa Ziehau enum intr_trigger trig, enum intr_polarity pola)
486bef055abSSepherosa Ziehau {
487bec969afSSepherosa Ziehau machintr_legacy_intr_config(irq, trig, pola);
488bef055abSSepherosa Ziehau return 0;
489bef055abSSepherosa Ziehau }
490bef055abSSepherosa Ziehau
491b2b3ffcdSSimon Schubert /*
492b2b3ffcdSSimon Schubert * Currently this uses the really grody interface from kern/kern_intr.c
493b2b3ffcdSSimon Schubert * (which really doesn't belong in kern/anything.c). Eventually, all of
494b2b3ffcdSSimon Schubert * the code in kern_intr.c and machdep_intr.c should get moved here, since
495b2b3ffcdSSimon Schubert * this is going to be the official interface.
496b2b3ffcdSSimon Schubert */
497b2b3ffcdSSimon Schubert static int
nexus_setup_intr(device_t bus,device_t child,struct resource * irq,int flags,void (* ihand)(void *),void * arg,void ** cookiep,lwkt_serialize_t serializer,const char * desc)498b2b3ffcdSSimon Schubert nexus_setup_intr(device_t bus, device_t child, struct resource *irq,
4990e6f0e28SSepherosa Ziehau int flags, void (*ihand)(void *), void *arg, void **cookiep,
5000e6f0e28SSepherosa Ziehau lwkt_serialize_t serializer, const char *desc)
501b2b3ffcdSSimon Schubert {
502b2b3ffcdSSimon Schubert int error, icflags;
503b2b3ffcdSSimon Schubert
504b2b3ffcdSSimon Schubert /* somebody tried to setup an irq that failed to allocate! */
505b2b3ffcdSSimon Schubert if (irq == NULL)
506293ad79aSSascha Wildner panic("%s: NULL irq resource!", __func__);
507b2b3ffcdSSimon Schubert
5084090d6ffSSascha Wildner *cookiep = NULL;
509b2b3ffcdSSimon Schubert icflags = flags;
510b2b3ffcdSSimon Schubert if ((irq->r_flags & RF_SHAREABLE) == 0)
511b2b3ffcdSSimon Schubert icflags |= INTR_EXCL;
512b2b3ffcdSSimon Schubert
513b2b3ffcdSSimon Schubert /*
514b2b3ffcdSSimon Schubert * We depend here on rman_activate_resource() being idempotent.
515b2b3ffcdSSimon Schubert */
516b2b3ffcdSSimon Schubert error = rman_activate_resource(irq);
517b2b3ffcdSSimon Schubert if (error)
518b2b3ffcdSSimon Schubert return (error);
519b2b3ffcdSSimon Schubert
5200e6f0e28SSepherosa Ziehau /* Use device name, if description is not specified */
5210e6f0e28SSepherosa Ziehau if (desc == NULL)
5220e6f0e28SSepherosa Ziehau desc = device_get_nameunit(child);
5230e6f0e28SSepherosa Ziehau
524b2b3ffcdSSimon Schubert /*
525b2b3ffcdSSimon Schubert * XXX cast the interrupt handler function to an inthand2_t. The
526b2b3ffcdSSimon Schubert * difference is that an additional frame argument is passed which
527b2b3ffcdSSimon Schubert * we do not currently want to expose the BUS subsystem to.
528b2b3ffcdSSimon Schubert */
529b2b3ffcdSSimon Schubert *cookiep = register_int(irq->r_start, (inthand2_t *)ihand, arg,
5300e6f0e28SSepherosa Ziehau desc, serializer, icflags, rman_get_cpuid(irq));
531b2b3ffcdSSimon Schubert if (*cookiep == NULL)
532b2b3ffcdSSimon Schubert error = EINVAL;
533b2b3ffcdSSimon Schubert return (error);
534b2b3ffcdSSimon Schubert }
535b2b3ffcdSSimon Schubert
536b2b3ffcdSSimon Schubert static int
nexus_teardown_intr(device_t dev,device_t child,struct resource * r,void * ih)537b2b3ffcdSSimon Schubert nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih)
538b2b3ffcdSSimon Schubert {
539b2b3ffcdSSimon Schubert if (ih) {
5406355d931SSepherosa Ziehau unregister_int(ih, rman_get_cpuid(r));
541b2b3ffcdSSimon Schubert return (0);
542b2b3ffcdSSimon Schubert }
543b2b3ffcdSSimon Schubert return(-1);
544b2b3ffcdSSimon Schubert }
545b2b3ffcdSSimon Schubert
546b2b3ffcdSSimon Schubert static int
nexus_set_resource(device_t dev,device_t child,int type,int rid,u_long start,u_long count,int cpuid)547b47b3275SSepherosa Ziehau nexus_set_resource(device_t dev, device_t child, int type, int rid,
548b47b3275SSepherosa Ziehau u_long start, u_long count, int cpuid)
549b2b3ffcdSSimon Schubert {
550b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(child);
551b2b3ffcdSSimon Schubert struct resource_list *rl = &ndev->nx_resources;
552b2b3ffcdSSimon Schubert
553b2b3ffcdSSimon Schubert /* XXX this should return a success/failure indicator */
554b47b3275SSepherosa Ziehau resource_list_add(rl, type, rid, start, start + count - 1, count,
555b47b3275SSepherosa Ziehau cpuid);
556b2b3ffcdSSimon Schubert return(0);
557b2b3ffcdSSimon Schubert }
558b2b3ffcdSSimon Schubert
559b2b3ffcdSSimon Schubert static int
nexus_get_resource(device_t dev,device_t child,int type,int rid,u_long * startp,u_long * countp)560b2b3ffcdSSimon Schubert nexus_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp)
561b2b3ffcdSSimon Schubert {
562b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(child);
563b2b3ffcdSSimon Schubert struct resource_list *rl = &ndev->nx_resources;
564b2b3ffcdSSimon Schubert struct resource_list_entry *rle;
565b2b3ffcdSSimon Schubert
566b2b3ffcdSSimon Schubert rle = resource_list_find(rl, type, rid);
567b2b3ffcdSSimon Schubert device_printf(child, "type %d rid %d startp %p countp %p - got %p\n",
568b2b3ffcdSSimon Schubert type, rid, startp, countp, rle);
569b2b3ffcdSSimon Schubert if (!rle)
570b2b3ffcdSSimon Schubert return(ENOENT);
571b2b3ffcdSSimon Schubert if (startp)
572b2b3ffcdSSimon Schubert *startp = rle->start;
573b2b3ffcdSSimon Schubert if (countp)
574b2b3ffcdSSimon Schubert *countp = rle->count;
575b2b3ffcdSSimon Schubert return(0);
576b2b3ffcdSSimon Schubert }
577b2b3ffcdSSimon Schubert
578b2b3ffcdSSimon Schubert static void
nexus_delete_resource(device_t dev,device_t child,int type,int rid)579b2b3ffcdSSimon Schubert nexus_delete_resource(device_t dev, device_t child, int type, int rid)
580b2b3ffcdSSimon Schubert {
581b2b3ffcdSSimon Schubert struct nexus_device *ndev = DEVTONX(child);
582b2b3ffcdSSimon Schubert struct resource_list *rl = &ndev->nx_resources;
583b2b3ffcdSSimon Schubert
584b2b3ffcdSSimon Schubert resource_list_delete(rl, type, rid);
585b2b3ffcdSSimon Schubert }
586b2b3ffcdSSimon Schubert
587a6ae3d3bSSascha Wildner #if NPCI > 0
5884234567cSSepherosa Ziehau static int
nexus_alloc_msi(device_t dev,device_t child,int count,int maxcount,int * irqs,int cpuid)5894234567cSSepherosa Ziehau nexus_alloc_msi(device_t dev, device_t child, int count, int maxcount,
5904234567cSSepherosa Ziehau int *irqs, int cpuid)
5914234567cSSepherosa Ziehau {
5927831621fSSepherosa Ziehau if (!lapic_enable)
5937831621fSSepherosa Ziehau return ENODEV;
5947831621fSSepherosa Ziehau
5954234567cSSepherosa Ziehau return MachIntrABI.msi_alloc(irqs, count, cpuid);
5964234567cSSepherosa Ziehau }
5974234567cSSepherosa Ziehau
5984234567cSSepherosa Ziehau static int
nexus_release_msi(device_t dev,device_t child,int count,int * irqs,int cpuid)5994234567cSSepherosa Ziehau nexus_release_msi(device_t dev, device_t child, int count, int *irqs, int cpuid)
6004234567cSSepherosa Ziehau {
6017831621fSSepherosa Ziehau KKASSERT(lapic_enable);
6024234567cSSepherosa Ziehau MachIntrABI.msi_release(irqs, count, cpuid);
6034234567cSSepherosa Ziehau return 0;
6044234567cSSepherosa Ziehau }
6054234567cSSepherosa Ziehau
6064234567cSSepherosa Ziehau static int
nexus_map_msi(device_t dev,device_t child,int irq,uint64_t * addr,uint32_t * data,int cpuid)6074234567cSSepherosa Ziehau nexus_map_msi(device_t dev, device_t child, int irq, uint64_t *addr,
6084234567cSSepherosa Ziehau uint32_t *data, int cpuid)
6094234567cSSepherosa Ziehau {
6107831621fSSepherosa Ziehau KKASSERT(lapic_enable);
6114234567cSSepherosa Ziehau MachIntrABI.msi_map(irq, addr, data, cpuid);
6124234567cSSepherosa Ziehau return 0;
6134234567cSSepherosa Ziehau }
614f7c8efd4SSepherosa Ziehau
615f7c8efd4SSepherosa Ziehau static int
nexus_alloc_msix(device_t dev,device_t child,int * irq,int cpuid)616f7c8efd4SSepherosa Ziehau nexus_alloc_msix(device_t dev, device_t child, int *irq, int cpuid)
617f7c8efd4SSepherosa Ziehau {
618f7c8efd4SSepherosa Ziehau if (!lapic_enable)
619f7c8efd4SSepherosa Ziehau return ENODEV;
620f7c8efd4SSepherosa Ziehau
621f7c8efd4SSepherosa Ziehau return MachIntrABI.msix_alloc(irq, cpuid);
622f7c8efd4SSepherosa Ziehau }
623f7c8efd4SSepherosa Ziehau
624f7c8efd4SSepherosa Ziehau static int
nexus_release_msix(device_t dev,device_t child,int irq,int cpuid)625f7c8efd4SSepherosa Ziehau nexus_release_msix(device_t dev, device_t child, int irq, int cpuid)
626f7c8efd4SSepherosa Ziehau {
627f7c8efd4SSepherosa Ziehau KKASSERT(lapic_enable);
628f7c8efd4SSepherosa Ziehau MachIntrABI.msix_release(irq, cpuid);
629f7c8efd4SSepherosa Ziehau return 0;
630f7c8efd4SSepherosa Ziehau }
631a6ae3d3bSSascha Wildner #endif
63297d69dfdSMarkus Pfeiffer
63397d69dfdSMarkus Pfeiffer /* Placeholder for system RAM. */
63497d69dfdSMarkus Pfeiffer static void
ram_identify(driver_t * driver,device_t parent)63597d69dfdSMarkus Pfeiffer ram_identify(driver_t *driver, device_t parent)
63697d69dfdSMarkus Pfeiffer {
63797d69dfdSMarkus Pfeiffer if (resource_disabled("ram", 0))
63897d69dfdSMarkus Pfeiffer return;
63997d69dfdSMarkus Pfeiffer if (BUS_ADD_CHILD(parent, parent, 0, "ram", 0) == NULL)
640293ad79aSSascha Wildner panic("%s", __func__);
64197d69dfdSMarkus Pfeiffer }
64297d69dfdSMarkus Pfeiffer
64397d69dfdSMarkus Pfeiffer static int
ram_probe(device_t dev)64497d69dfdSMarkus Pfeiffer ram_probe(device_t dev)
64597d69dfdSMarkus Pfeiffer {
64697d69dfdSMarkus Pfeiffer device_quiet(dev);
64797d69dfdSMarkus Pfeiffer device_set_desc(dev, "System RAM");
64897d69dfdSMarkus Pfeiffer return (0);
64997d69dfdSMarkus Pfeiffer }
65097d69dfdSMarkus Pfeiffer
65197d69dfdSMarkus Pfeiffer static int
ram_attach(device_t dev)65297d69dfdSMarkus Pfeiffer ram_attach(device_t dev)
65397d69dfdSMarkus Pfeiffer {
65497d69dfdSMarkus Pfeiffer struct bios_smap *smapbase, *smap, *smapend;
65597d69dfdSMarkus Pfeiffer struct resource *res;
65677c48adbSMatthew Dillon vm_phystable_t *p;
65797d69dfdSMarkus Pfeiffer caddr_t kmdp;
65897d69dfdSMarkus Pfeiffer uint32_t smapsize;
65997d69dfdSMarkus Pfeiffer int error, rid;
66097d69dfdSMarkus Pfeiffer
661fd1b5b2eSSascha Wildner device_quiet(dev);
662fd1b5b2eSSascha Wildner device_set_desc(dev, "System RAM");
663fd1b5b2eSSascha Wildner
66497d69dfdSMarkus Pfeiffer /* Retrieve the system memory map from the loader. */
66597d69dfdSMarkus Pfeiffer kmdp = preload_search_by_type("elf kernel");
66697d69dfdSMarkus Pfeiffer if (kmdp == NULL)
66797d69dfdSMarkus Pfeiffer kmdp = preload_search_by_type(ELF_KERN_STR);
66897d69dfdSMarkus Pfeiffer if (kmdp != NULL)
66997d69dfdSMarkus Pfeiffer smapbase = (struct bios_smap *)preload_search_info(kmdp,
67097d69dfdSMarkus Pfeiffer MODINFO_METADATA | MODINFOMD_SMAP);
67197d69dfdSMarkus Pfeiffer else
67297d69dfdSMarkus Pfeiffer smapbase = NULL;
67397d69dfdSMarkus Pfeiffer if (smapbase != NULL) {
67497d69dfdSMarkus Pfeiffer smapsize = *((u_int32_t *)smapbase - 1);
67597d69dfdSMarkus Pfeiffer smapend = (struct bios_smap *)((uintptr_t)smapbase + smapsize);
67697d69dfdSMarkus Pfeiffer
67797d69dfdSMarkus Pfeiffer rid = 0;
67897d69dfdSMarkus Pfeiffer for (smap = smapbase; smap < smapend; smap++) {
67997d69dfdSMarkus Pfeiffer if (smap->type != SMAP_TYPE_MEMORY ||
68097d69dfdSMarkus Pfeiffer smap->length == 0)
68197d69dfdSMarkus Pfeiffer continue;
68297d69dfdSMarkus Pfeiffer error = bus_set_resource(dev, SYS_RES_MEMORY, rid,
68397d69dfdSMarkus Pfeiffer smap->base, smap->length, -1);
68497d69dfdSMarkus Pfeiffer if (error)
685293ad79aSSascha Wildner panic("%s: resource %d failed set with %d",
686293ad79aSSascha Wildner __func__, rid, error);
68797d69dfdSMarkus Pfeiffer res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
68897d69dfdSMarkus Pfeiffer 0);
689fc4394d1SMatthew Dillon if (res == NULL) {
690fc4394d1SMatthew Dillon panic("%s: resource %d failed to "
691fc4394d1SMatthew Dillon "attach 0x%016jx/%jd",
692fc4394d1SMatthew Dillon __func__, rid,
693fc4394d1SMatthew Dillon (intmax_t)smap->base,
694fc4394d1SMatthew Dillon (intmax_t)smap->length);
695fc4394d1SMatthew Dillon }
69697d69dfdSMarkus Pfeiffer rid++;
69797d69dfdSMarkus Pfeiffer }
69897d69dfdSMarkus Pfeiffer return (0);
69997d69dfdSMarkus Pfeiffer }
70097d69dfdSMarkus Pfeiffer
70197d69dfdSMarkus Pfeiffer /*
70297d69dfdSMarkus Pfeiffer * If the system map is not available, fall back to using
70397d69dfdSMarkus Pfeiffer * dump_avail[]. We use the dump_avail[] array rather than
70497d69dfdSMarkus Pfeiffer * phys_avail[] for the memory map as phys_avail[] contains
70597d69dfdSMarkus Pfeiffer * holes for kernel memory, page 0, the message buffer, and
70697d69dfdSMarkus Pfeiffer * the dcons buffer. We test the end address in the loop
70797d69dfdSMarkus Pfeiffer * instead of the start since the start address for the first
70897d69dfdSMarkus Pfeiffer * segment is 0.
70997d69dfdSMarkus Pfeiffer */
71077c48adbSMatthew Dillon for (rid = 0, p = &dump_avail[0]; p->phys_end; ++rid, ++p) {
71177c48adbSMatthew Dillon error = bus_set_resource(dev, SYS_RES_MEMORY, rid,
71277c48adbSMatthew Dillon p->phys_beg,
71377c48adbSMatthew Dillon p->phys_end - p->phys_beg,
71477c48adbSMatthew Dillon -1);
71597d69dfdSMarkus Pfeiffer if (error)
716293ad79aSSascha Wildner panic("%s: resource %d failed set with %d", __func__,
717293ad79aSSascha Wildner rid, error);
71897d69dfdSMarkus Pfeiffer res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 0);
71997d69dfdSMarkus Pfeiffer if (res == NULL)
720293ad79aSSascha Wildner panic("%s: resource %d failed to attach", __func__,
721293ad79aSSascha Wildner rid);
72297d69dfdSMarkus Pfeiffer }
72397d69dfdSMarkus Pfeiffer return (0);
72497d69dfdSMarkus Pfeiffer }
72597d69dfdSMarkus Pfeiffer static device_method_t ram_methods[] = {
72697d69dfdSMarkus Pfeiffer /* Device interface */
72797d69dfdSMarkus Pfeiffer DEVMETHOD(device_identify, ram_identify),
72897d69dfdSMarkus Pfeiffer DEVMETHOD(device_probe, ram_probe),
72997d69dfdSMarkus Pfeiffer DEVMETHOD(device_attach, ram_attach),
73097d69dfdSMarkus Pfeiffer { 0, 0 }
73197d69dfdSMarkus Pfeiffer };
73297d69dfdSMarkus Pfeiffer
73397d69dfdSMarkus Pfeiffer static driver_t ram_driver = {
73497d69dfdSMarkus Pfeiffer "ram",
73597d69dfdSMarkus Pfeiffer ram_methods,
73697d69dfdSMarkus Pfeiffer 1, /* no softc */
73797d69dfdSMarkus Pfeiffer };
73897d69dfdSMarkus Pfeiffer
73997d69dfdSMarkus Pfeiffer static devclass_t ram_devclass;
7403a25be87SSascha Wildner DRIVER_MODULE(ram, nexus, ram_driver, ram_devclass, NULL, NULL);
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