icu: Split out icu/icu.c
[dragonfly.git] / sys / platform / pc32 / acpica5 / acpi_wakeup.c
CommitLineData
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1/*-
2 * Copyright (c) 2001 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2001 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
49e48b8a 27 * $FreeBSD: src/sys/i386/acpica/acpi_wakeup.c,v 1.33 2004/05/06 02:18:58 njl Exp $
392b7745 28 * $DragonFly: src/sys/platform/pc32/acpica5/acpi_wakeup.c,v 1.15 2007/05/28 18:55:41 dillon Exp $
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29 */
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/bus.h>
35#include <sys/lock.h>
36#include <sys/proc.h>
37#include <sys/sysctl.h>
38
39#include <vm/vm.h>
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40#include <vm/pmap.h>
41#include <vm/vm_object.h>
42#include <vm/vm_page.h>
43#include <vm/vm_map.h>
5ed44076 44
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45#include <machine/cpufunc.h>
46#include <machine/segments.h>
1b505979 47#include <machine_base/icu/icu_var.h>
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48
49#include "acpi.h"
58c6428b 50#include <dev/acpica5/acpivar.h>
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51
52#include "acpi_wakecode.h"
53
54#if __FreeBSD_version < 500000
55#define vm_page_lock_queues()
56#define vm_page_unlock_queues()
57#endif
58
59extern uint32_t acpi_reset_video;
60extern void initializecpu(void);
61
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62static __attribute__((used)) struct region_descriptor r_idt, r_gdt, *p_gdt;
63static __attribute__((used)) uint16_t r_ldt;
5ed44076 64
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65static __attribute__((used)) uint32_t r_eax, r_ebx, r_ecx, r_edx, r_ebp,
66 r_esi, r_edi, r_efl, r_cr0, r_cr2,
67 r_cr3, r_cr4, ret_addr;
5ed44076 68
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69static __attribute__((used)) uint16_t r_cs, r_ds, r_es, r_fs, r_gs, r_ss,
70 r_tr;
71static __attribute__((used)) uint32_t r_esp;
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72
73static void acpi_printcpu(void);
74static void acpi_realmodeinst(void *arg, bus_dma_segment_t *segs,
75 int nsegs, int error);
76static void acpi_alloc_wakeup_handler(void);
77
78/* XXX shut gcc up */
79extern int acpi_savecpu(void);
80extern int acpi_restorecpu(void);
81
f9d8cd12 82#if defined(__GNUC__) || defined(__INTEL_COMPILER)
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83__asm__(" \n\
84 .text \n\
85 .p2align 2, 0x90 \n\
86 .type acpi_restorecpu, @function\n\
87acpi_restorecpu: \n\
88 .align 4 \n\
89 movl r_eax,%eax \n\
90 movl r_ebx,%ebx \n\
91 movl r_ecx,%ecx \n\
92 movl r_edx,%edx \n\
93 movl r_ebp,%ebp \n\
94 movl r_esi,%esi \n\
95 movl r_edi,%edi \n\
96 movl r_esp,%esp \n\
97 \n\
98 pushl r_efl \n\
99 popfl \n\
100 \n\
101 movl ret_addr,%eax \n\
102 movl %eax,(%esp) \n\
103 xorl %eax,%eax \n\
104 ret \n\
105 \n\
106 .text \n\
107 .p2align 2, 0x90 \n\
108 .type acpi_savecpu, @function \n\
109acpi_savecpu: \n\
110 movw %cs,r_cs \n\
111 movw %ds,r_ds \n\
112 movw %es,r_es \n\
113 movw %fs,r_fs \n\
114 movw %gs,r_gs \n\
115 movw %ss,r_ss \n\
116 \n\
117 movl %eax,r_eax \n\
118 movl %ebx,r_ebx \n\
119 movl %ecx,r_ecx \n\
120 movl %edx,r_edx \n\
121 movl %ebp,r_ebp \n\
122 movl %esi,r_esi \n\
123 movl %edi,r_edi \n\
124 \n\
125 movl %cr0,%eax \n\
126 movl %eax,r_cr0 \n\
127 movl %cr2,%eax \n\
128 movl %eax,r_cr2 \n\
129 movl %cr3,%eax \n\
130 movl %eax,r_cr3 \n\
131 movl %cr4,%eax \n\
132 movl %eax,r_cr4 \n\
133 \n\
134 pushfl \n\
135 popl r_efl \n\
136 \n\
137 movl %esp,r_esp \n\
138 \n\
139 sgdt r_gdt \n\
140 sidt r_idt \n\
141 sldt r_ldt \n\
142 str r_tr \n\
143 \n\
144 movl (%esp),%eax \n\
145 movl %eax,ret_addr \n\
146 movl $1,%eax \n\
147 ret \n\
148");
f9d8cd12 149#endif /* __GNUC__ || __INTEL_COMPILER */
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150
151static void
152acpi_printcpu(void)
153{
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154 kprintf("======== acpi_printcpu() debug dump ========\n");
155 kprintf("gdt[%04x:%08x] idt[%04x:%08x] ldt[%04x] tr[%04x] efl[%08x]\n",
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156 r_gdt.rd_limit, r_gdt.rd_base, r_idt.rd_limit, r_idt.rd_base,
157 r_ldt, r_tr, r_efl);
26be20a0 158 kprintf("eax[%08x] ebx[%08x] ecx[%08x] edx[%08x]\n",
5ed44076 159 r_eax, r_ebx, r_ecx, r_edx);
26be20a0 160 kprintf("esi[%08x] edi[%08x] ebp[%08x] esp[%08x]\n",
5ed44076 161 r_esi, r_edi, r_ebp, r_esp);
26be20a0 162 kprintf("cr0[%08x] cr2[%08x] cr3[%08x] cr4[%08x]\n",
5ed44076 163 r_cr0, r_cr2, r_cr3, r_cr4);
26be20a0 164 kprintf("cs[%04x] ds[%04x] es[%04x] fs[%04x] gs[%04x] ss[%04x]\n",
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165 r_cs, r_ds, r_es, r_fs, r_gs, r_ss);
166}
167
168#define WAKECODE_FIXUP(offset, type, val) do { \
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169 type *addr; \
170 addr = (type *)(sc->acpi_wakeaddr + offset); \
171 *addr = val; \
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172} while (0)
173
174#define WAKECODE_BCOPY(offset, type, val) do { \
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175 void *addr; \
176 addr = (void *)(sc->acpi_wakeaddr + offset); \
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177 bcopy(&(val), addr, sizeof(type)); \
178} while (0)
179
180int
181acpi_sleep_machdep(struct acpi_softc *sc, int state)
182{
183 ACPI_STATUS status;
184 vm_paddr_t oldphys;
185 struct pmap *pm;
186 vm_page_t page;
187 static vm_page_t opage = NULL;
188 int ret = 0;
8ee795b8 189 int pteobj_allocated = 0;
f9d8cd12 190 uint32_t cr3;
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191 u_long ef;
192 struct proc *p;
193
194 if (sc->acpi_wakeaddr == 0)
195 return (0);
196
197 AcpiSetFirmwareWakingVector(sc->acpi_wakephys);
198
199 ef = read_eflags();
200 ACPI_DISABLE_IRQS();
201
202 /* Create Identity Mapping */
203 if ((p = curproc) == NULL)
204 p = &proc0;
205 pm = vmspace_pmap(p->p_vmspace);
206 cr3 = rcr3();
207#ifdef PAE
208 load_cr3(vtophys(pm->pm_pdpt));
209#else
210 load_cr3(vtophys(pm->pm_pdir));
211#endif
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212 /*
213 * note: DragonFly still uses the VM object (FreeBSD-5 no longer uses
214 * the VM object).
215 */
216 if (pm->pm_pteobj == NULL) {
217 pm->pm_pteobj = vm_object_allocate(OBJT_DEFAULT, PTDPTDI + 1);
218 pteobj_allocated = 1;
219 }
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220
221 oldphys = pmap_extract(pm, sc->acpi_wakephys);
222 if (oldphys)
223 opage = PHYS_TO_VM_PAGE(oldphys);
224 page = PHYS_TO_VM_PAGE(sc->acpi_wakephys);
225 pmap_enter(pm, sc->acpi_wakephys, page,
226 VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE, 1);
227
228 ret_addr = 0;
229 if (acpi_savecpu()) {
230 /* Execute Sleep */
231 cpu_disable_intr();
232
233 p_gdt = (struct region_descriptor *)
234 (sc->acpi_wakeaddr + physical_gdt);
235 p_gdt->rd_limit = r_gdt.rd_limit;
236 p_gdt->rd_base = vtophys(r_gdt.rd_base);
237
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238 WAKECODE_FIXUP(physical_esp, uint32_t, vtophys(r_esp));
239 WAKECODE_FIXUP(previous_cr0, uint32_t, r_cr0);
240 WAKECODE_FIXUP(previous_cr2, uint32_t, r_cr2);
241 WAKECODE_FIXUP(previous_cr3, uint32_t, r_cr3);
242 WAKECODE_FIXUP(previous_cr4, uint32_t, r_cr4);
5ed44076 243
f9d8cd12 244 WAKECODE_FIXUP(reset_video, uint32_t, acpi_reset_video);
5ed44076 245
f9d8cd12 246 WAKECODE_FIXUP(previous_tr, uint16_t, r_tr);
5ed44076 247 WAKECODE_BCOPY(previous_gdt, struct region_descriptor, r_gdt);
f9d8cd12 248 WAKECODE_FIXUP(previous_ldt, uint16_t, r_ldt);
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249 WAKECODE_BCOPY(previous_idt, struct region_descriptor, r_idt);
250
601f68aa 251 WAKECODE_FIXUP(where_to_recover, void *, acpi_restorecpu);
5ed44076 252
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253 WAKECODE_FIXUP(previous_ds, uint16_t, r_ds);
254 WAKECODE_FIXUP(previous_es, uint16_t, r_es);
255 WAKECODE_FIXUP(previous_fs, uint16_t, r_fs);
256 WAKECODE_FIXUP(previous_gs, uint16_t, r_gs);
257 WAKECODE_FIXUP(previous_ss, uint16_t, r_ss);
5ed44076 258
f9d8cd12 259 if (bootverbose)
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260 acpi_printcpu();
261
262 /* Call ACPICA to enter the desired sleep state */
263 if (state == ACPI_STATE_S4 && sc->acpi_s4bios)
264 status = AcpiEnterSleepStateS4bios();
265 else
266 status = AcpiEnterSleepState(state);
267
268 if (status != AE_OK) {
269 device_printf(sc->acpi_dev,
270 "AcpiEnterSleepState failed - %s\n",
271 AcpiFormatException(status));
272 ret = -1;
273 goto out;
274 }
275
276 for (;;) ;
277 } else {
278 /* Execute Wakeup */
279#if 0
280 initializecpu();
281#endif
94fb7962 282 icu_reinit();
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283 cpu_enable_intr();
284
f9d8cd12 285 if (bootverbose) {
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286 acpi_savecpu();
287 acpi_printcpu();
288 }
289 }
290
291out:
292 vm_page_lock_queues();
293 pmap_remove(pm, sc->acpi_wakephys, sc->acpi_wakephys + PAGE_SIZE);
294 vm_page_unlock_queues();
295 if (opage) {
296 pmap_enter(pm, sc->acpi_wakephys, page,
297 VM_PROT_READ | VM_PROT_WRITE, 0);
298 }
299
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300 if (pteobj_allocated) {
301 vm_object_deallocate(pm->pm_pteobj);
302 pm->pm_pteobj = NULL;
303 }
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304 load_cr3(cr3);
305
306 write_eflags(ef);
307
308 return (ret);
309}
310
311static bus_dma_tag_t acpi_waketag;
312static bus_dmamap_t acpi_wakemap;
313static vm_offset_t acpi_wakeaddr = 0;
314
315static void
316acpi_alloc_wakeup_handler(void)
317{
318 if (!cold)
319 return;
320
321 if (bus_dma_tag_create(/* parent */ NULL, /* alignment */ 2, 0,
322 /* lowaddr below 1MB */ 0x9ffff,
323 /* highaddr */ BUS_SPACE_MAXADDR, NULL, NULL,
324 PAGE_SIZE, 1, PAGE_SIZE, 0, &acpi_waketag) != 0) {
26be20a0 325 kprintf("acpi_alloc_wakeup_handler: can't create wake tag\n");
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326 return;
327 }
328
329 if (bus_dmamem_alloc(acpi_waketag, (void **)&acpi_wakeaddr,
330 BUS_DMA_NOWAIT, &acpi_wakemap)) {
26be20a0 331 kprintf("acpi_alloc_wakeup_handler: can't alloc wake memory\n");
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332 return;
333 }
334}
335
ba39e2e0 336SYSINIT(acpiwakeup, SI_BOOT1_POST, SI_ORDER_ANY, acpi_alloc_wakeup_handler, 0)
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337
338static void
339acpi_realmodeinst(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
340{
341 struct acpi_softc *sc = arg;
f9d8cd12 342 uint32_t *addr;
5ed44076 343
f9d8cd12 344 addr = (uint32_t *)&wakecode[wakeup_sw32 + 2];
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345 *addr = segs[0].ds_addr + wakeup_32;
346 bcopy(wakecode, (void *)sc->acpi_wakeaddr, sizeof(wakecode));
347 sc->acpi_wakephys = segs[0].ds_addr;
348}
349
350void
351acpi_install_wakeup_handler(struct acpi_softc *sc)
352{
353 if (acpi_wakeaddr == 0)
354 return;
355
356 sc->acpi_waketag = acpi_waketag;
357 sc->acpi_wakeaddr = acpi_wakeaddr;
358 sc->acpi_wakemap = acpi_wakemap;
359
360 bus_dmamap_load(sc->acpi_waketag, sc->acpi_wakemap,
361 (void *)sc->acpi_wakeaddr, PAGE_SIZE,
362 acpi_realmodeinst, sc, 0);
363}