4 * Copyright (c) 2006 Fabrice Bellard
5 * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
6 * VA Linux Systems Japan K.K.
7 * Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
9 * This is based on acpi.c.
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License version 2 as published by the Free Software Foundation.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, see <http://www.gnu.org/licenses/>
23 * Contributions after 2012-01-13 are licensed under the terms of the
24 * GNU GPL, version 2 or (at your option) any later version.
26 #include "qemu/osdep.h"
28 #include "qapi/error.h"
29 #include "qapi/visitor.h"
30 #include "hw/i386/pc.h"
31 #include "hw/pci/pci.h"
32 #include "qemu/timer.h"
33 #include "sysemu/sysemu.h"
34 #include "hw/acpi/acpi.h"
35 #include "hw/acpi/tco.h"
36 #include "sysemu/kvm.h"
37 #include "exec/address-spaces.h"
39 #include "hw/i386/ich9.h"
40 #include "hw/mem/pc-dimm.h"
45 #define ICH9_DEBUG(fmt, ...) \
46 do { printf("%s "fmt, __func__, ## __VA_ARGS__); } while (0)
48 #define ICH9_DEBUG(fmt, ...) do { } while (0)
51 static void ich9_pm_update_sci_fn(ACPIREGS
*regs
)
53 ICH9LPCPMRegs
*pm
= container_of(regs
, ICH9LPCPMRegs
, acpi_regs
);
54 acpi_update_sci(&pm
->acpi_regs
, pm
->irq
);
57 static uint64_t ich9_gpe_readb(void *opaque
, hwaddr addr
, unsigned width
)
59 ICH9LPCPMRegs
*pm
= opaque
;
60 return acpi_gpe_ioport_readb(&pm
->acpi_regs
, addr
);
63 static void ich9_gpe_writeb(void *opaque
, hwaddr addr
, uint64_t val
,
66 ICH9LPCPMRegs
*pm
= opaque
;
67 acpi_gpe_ioport_writeb(&pm
->acpi_regs
, addr
, val
);
68 acpi_update_sci(&pm
->acpi_regs
, pm
->irq
);
71 static const MemoryRegionOps ich9_gpe_ops
= {
72 .read
= ich9_gpe_readb
,
73 .write
= ich9_gpe_writeb
,
74 .valid
.min_access_size
= 1,
75 .valid
.max_access_size
= 4,
76 .impl
.min_access_size
= 1,
77 .impl
.max_access_size
= 1,
78 .endianness
= DEVICE_LITTLE_ENDIAN
,
81 static uint64_t ich9_smi_readl(void *opaque
, hwaddr addr
, unsigned width
)
83 ICH9LPCPMRegs
*pm
= opaque
;
94 static void ich9_smi_writel(void *opaque
, hwaddr addr
, uint64_t val
,
97 ICH9LPCPMRegs
*pm
= opaque
;
98 TCOIORegs
*tr
= &pm
->tco_regs
;
103 tco_en
= pm
->smi_en
& ICH9_PMIO_SMI_EN_TCO_EN
;
104 /* once TCO_LOCK bit is set, TCO_EN bit cannot be overwritten */
105 if (tr
->tco
.cnt1
& TCO_LOCK
) {
106 val
= (val
& ~ICH9_PMIO_SMI_EN_TCO_EN
) | tco_en
;
108 pm
->smi_en
&= ~pm
->smi_en_wmask
;
109 pm
->smi_en
|= (val
& pm
->smi_en_wmask
);
114 static const MemoryRegionOps ich9_smi_ops
= {
115 .read
= ich9_smi_readl
,
116 .write
= ich9_smi_writel
,
117 .valid
.min_access_size
= 4,
118 .valid
.max_access_size
= 4,
119 .endianness
= DEVICE_LITTLE_ENDIAN
,
122 void ich9_pm_iospace_update(ICH9LPCPMRegs
*pm
, uint32_t pm_io_base
)
124 ICH9_DEBUG("to 0x%x\n", pm_io_base
);
126 assert((pm_io_base
& ICH9_PMIO_MASK
) == 0);
128 pm
->pm_io_base
= pm_io_base
;
129 memory_region_transaction_begin();
130 memory_region_set_enabled(&pm
->io
, pm
->pm_io_base
!= 0);
131 memory_region_set_address(&pm
->io
, pm
->pm_io_base
);
132 memory_region_transaction_commit();
135 static int ich9_pm_post_load(void *opaque
, int version_id
)
137 ICH9LPCPMRegs
*pm
= opaque
;
138 uint32_t pm_io_base
= pm
->pm_io_base
;
140 ich9_pm_iospace_update(pm
, pm_io_base
);
144 #define VMSTATE_GPE_ARRAY(_field, _state) \
146 .name = (stringify(_field)), \
148 .num = ICH9_PMIO_GPE0_LEN, \
149 .info = &vmstate_info_uint8, \
150 .size = sizeof(uint8_t), \
151 .flags = VMS_ARRAY | VMS_POINTER, \
152 .offset = vmstate_offset_pointer(_state, _field, uint8_t), \
155 static bool vmstate_test_use_memhp(void *opaque
)
157 ICH9LPCPMRegs
*s
= opaque
;
158 return s
->acpi_memory_hotplug
.is_enabled
;
161 static const VMStateDescription vmstate_memhp_state
= {
162 .name
= "ich9_pm/memhp",
164 .minimum_version_id
= 1,
165 .minimum_version_id_old
= 1,
166 .needed
= vmstate_test_use_memhp
,
167 .fields
= (VMStateField
[]) {
168 VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug
, ICH9LPCPMRegs
),
169 VMSTATE_END_OF_LIST()
173 static bool vmstate_test_use_tco(void *opaque
)
175 ICH9LPCPMRegs
*s
= opaque
;
176 return s
->enable_tco
;
179 static const VMStateDescription vmstate_tco_io_state
= {
180 .name
= "ich9_pm/tco",
182 .minimum_version_id
= 1,
183 .minimum_version_id_old
= 1,
184 .needed
= vmstate_test_use_tco
,
185 .fields
= (VMStateField
[]) {
186 VMSTATE_STRUCT(tco_regs
, ICH9LPCPMRegs
, 1, vmstate_tco_io_sts
,
188 VMSTATE_END_OF_LIST()
192 const VMStateDescription vmstate_ich9_pm
= {
195 .minimum_version_id
= 1,
196 .post_load
= ich9_pm_post_load
,
197 .fields
= (VMStateField
[]) {
198 VMSTATE_UINT16(acpi_regs
.pm1
.evt
.sts
, ICH9LPCPMRegs
),
199 VMSTATE_UINT16(acpi_regs
.pm1
.evt
.en
, ICH9LPCPMRegs
),
200 VMSTATE_UINT16(acpi_regs
.pm1
.cnt
.cnt
, ICH9LPCPMRegs
),
201 VMSTATE_TIMER_PTR(acpi_regs
.tmr
.timer
, ICH9LPCPMRegs
),
202 VMSTATE_INT64(acpi_regs
.tmr
.overflow_time
, ICH9LPCPMRegs
),
203 VMSTATE_GPE_ARRAY(acpi_regs
.gpe
.sts
, ICH9LPCPMRegs
),
204 VMSTATE_GPE_ARRAY(acpi_regs
.gpe
.en
, ICH9LPCPMRegs
),
205 VMSTATE_UINT32(smi_en
, ICH9LPCPMRegs
),
206 VMSTATE_UINT32(smi_sts
, ICH9LPCPMRegs
),
207 VMSTATE_END_OF_LIST()
209 .subsections
= (const VMStateDescription
*[]) {
210 &vmstate_memhp_state
,
211 &vmstate_tco_io_state
,
216 static void pm_reset(void *opaque
)
218 ICH9LPCPMRegs
*pm
= opaque
;
219 ich9_pm_iospace_update(pm
, 0);
221 acpi_pm1_evt_reset(&pm
->acpi_regs
);
222 acpi_pm1_cnt_reset(&pm
->acpi_regs
);
223 acpi_pm_tmr_reset(&pm
->acpi_regs
);
224 acpi_gpe_reset(&pm
->acpi_regs
);
227 if (!pm
->smm_enabled
) {
228 /* Mark SMM as already inited to prevent SMM from running. */
229 pm
->smi_en
|= ICH9_PMIO_SMI_EN_APMC_EN
;
231 pm
->smi_en_wmask
= ~0;
233 acpi_update_sci(&pm
->acpi_regs
, pm
->irq
);
236 static void pm_powerdown_req(Notifier
*n
, void *opaque
)
238 ICH9LPCPMRegs
*pm
= container_of(n
, ICH9LPCPMRegs
, powerdown_notifier
);
240 acpi_pm1_evt_power_down(&pm
->acpi_regs
);
243 void ich9_pm_init(PCIDevice
*lpc_pci
, ICH9LPCPMRegs
*pm
,
247 memory_region_init(&pm
->io
, OBJECT(lpc_pci
), "ich9-pm", ICH9_PMIO_SIZE
);
248 memory_region_set_enabled(&pm
->io
, false);
249 memory_region_add_subregion(pci_address_space_io(lpc_pci
),
252 acpi_pm_tmr_init(&pm
->acpi_regs
, ich9_pm_update_sci_fn
, &pm
->io
);
253 acpi_pm1_evt_init(&pm
->acpi_regs
, ich9_pm_update_sci_fn
, &pm
->io
);
254 acpi_pm1_cnt_init(&pm
->acpi_regs
, &pm
->io
, pm
->disable_s3
, pm
->disable_s4
,
257 acpi_gpe_init(&pm
->acpi_regs
, ICH9_PMIO_GPE0_LEN
);
258 memory_region_init_io(&pm
->io_gpe
, OBJECT(lpc_pci
), &ich9_gpe_ops
, pm
,
259 "acpi-gpe0", ICH9_PMIO_GPE0_LEN
);
260 memory_region_add_subregion(&pm
->io
, ICH9_PMIO_GPE0_STS
, &pm
->io_gpe
);
262 memory_region_init_io(&pm
->io_smi
, OBJECT(lpc_pci
), &ich9_smi_ops
, pm
,
264 memory_region_add_subregion(&pm
->io
, ICH9_PMIO_SMI_EN
, &pm
->io_smi
);
266 pm
->smm_enabled
= smm_enabled
;
268 pm
->enable_tco
= true;
269 acpi_pm_tco_init(&pm
->tco_regs
, &pm
->io
);
272 qemu_register_reset(pm_reset
, pm
);
273 pm
->powerdown_notifier
.notify
= pm_powerdown_req
;
274 qemu_register_powerdown_notifier(&pm
->powerdown_notifier
);
276 acpi_cpu_hotplug_init(pci_address_space_io(lpc_pci
), OBJECT(lpc_pci
),
277 &pm
->gpe_cpu
, ICH9_CPU_HOTPLUG_IO_BASE
);
279 if (pm
->acpi_memory_hotplug
.is_enabled
) {
280 acpi_memory_hotplug_init(pci_address_space_io(lpc_pci
), OBJECT(lpc_pci
),
281 &pm
->acpi_memory_hotplug
);
285 static void ich9_pm_get_gpe0_blk(Object
*obj
, Visitor
*v
, const char *name
,
286 void *opaque
, Error
**errp
)
288 ICH9LPCPMRegs
*pm
= opaque
;
289 uint32_t value
= pm
->pm_io_base
+ ICH9_PMIO_GPE0_STS
;
291 visit_type_uint32(v
, name
, &value
, errp
);
294 static bool ich9_pm_get_memory_hotplug_support(Object
*obj
, Error
**errp
)
296 ICH9LPCState
*s
= ICH9_LPC_DEVICE(obj
);
298 return s
->pm
.acpi_memory_hotplug
.is_enabled
;
301 static void ich9_pm_set_memory_hotplug_support(Object
*obj
, bool value
,
304 ICH9LPCState
*s
= ICH9_LPC_DEVICE(obj
);
306 s
->pm
.acpi_memory_hotplug
.is_enabled
= value
;
309 static void ich9_pm_get_disable_s3(Object
*obj
, Visitor
*v
, const char *name
,
310 void *opaque
, Error
**errp
)
312 ICH9LPCPMRegs
*pm
= opaque
;
313 uint8_t value
= pm
->disable_s3
;
315 visit_type_uint8(v
, name
, &value
, errp
);
318 static void ich9_pm_set_disable_s3(Object
*obj
, Visitor
*v
, const char *name
,
319 void *opaque
, Error
**errp
)
321 ICH9LPCPMRegs
*pm
= opaque
;
322 Error
*local_err
= NULL
;
325 visit_type_uint8(v
, name
, &value
, &local_err
);
329 pm
->disable_s3
= value
;
331 error_propagate(errp
, local_err
);
334 static void ich9_pm_get_disable_s4(Object
*obj
, Visitor
*v
, const char *name
,
335 void *opaque
, Error
**errp
)
337 ICH9LPCPMRegs
*pm
= opaque
;
338 uint8_t value
= pm
->disable_s4
;
340 visit_type_uint8(v
, name
, &value
, errp
);
343 static void ich9_pm_set_disable_s4(Object
*obj
, Visitor
*v
, const char *name
,
344 void *opaque
, Error
**errp
)
346 ICH9LPCPMRegs
*pm
= opaque
;
347 Error
*local_err
= NULL
;
350 visit_type_uint8(v
, name
, &value
, &local_err
);
354 pm
->disable_s4
= value
;
356 error_propagate(errp
, local_err
);
359 static void ich9_pm_get_s4_val(Object
*obj
, Visitor
*v
, const char *name
,
360 void *opaque
, Error
**errp
)
362 ICH9LPCPMRegs
*pm
= opaque
;
363 uint8_t value
= pm
->s4_val
;
365 visit_type_uint8(v
, name
, &value
, errp
);
368 static void ich9_pm_set_s4_val(Object
*obj
, Visitor
*v
, const char *name
,
369 void *opaque
, Error
**errp
)
371 ICH9LPCPMRegs
*pm
= opaque
;
372 Error
*local_err
= NULL
;
375 visit_type_uint8(v
, name
, &value
, &local_err
);
381 error_propagate(errp
, local_err
);
384 static bool ich9_pm_get_enable_tco(Object
*obj
, Error
**errp
)
386 ICH9LPCState
*s
= ICH9_LPC_DEVICE(obj
);
387 return s
->pm
.enable_tco
;
390 static void ich9_pm_set_enable_tco(Object
*obj
, bool value
, Error
**errp
)
392 ICH9LPCState
*s
= ICH9_LPC_DEVICE(obj
);
393 s
->pm
.enable_tco
= value
;
396 void ich9_pm_add_properties(Object
*obj
, ICH9LPCPMRegs
*pm
, Error
**errp
)
398 static const uint32_t gpe0_len
= ICH9_PMIO_GPE0_LEN
;
399 pm
->acpi_memory_hotplug
.is_enabled
= true;
404 object_property_add_uint32_ptr(obj
, ACPI_PM_PROP_PM_IO_BASE
,
405 &pm
->pm_io_base
, errp
);
406 object_property_add(obj
, ACPI_PM_PROP_GPE0_BLK
, "uint32",
407 ich9_pm_get_gpe0_blk
,
408 NULL
, NULL
, pm
, NULL
);
409 object_property_add_uint32_ptr(obj
, ACPI_PM_PROP_GPE0_BLK_LEN
,
411 object_property_add_bool(obj
, "memory-hotplug-support",
412 ich9_pm_get_memory_hotplug_support
,
413 ich9_pm_set_memory_hotplug_support
,
415 object_property_add(obj
, ACPI_PM_PROP_S3_DISABLED
, "uint8",
416 ich9_pm_get_disable_s3
,
417 ich9_pm_set_disable_s3
,
419 object_property_add(obj
, ACPI_PM_PROP_S4_DISABLED
, "uint8",
420 ich9_pm_get_disable_s4
,
421 ich9_pm_set_disable_s4
,
423 object_property_add(obj
, ACPI_PM_PROP_S4_VAL
, "uint8",
427 object_property_add_bool(obj
, ACPI_PM_PROP_TCO_ENABLED
,
428 ich9_pm_get_enable_tco
,
429 ich9_pm_set_enable_tco
,
433 void ich9_pm_device_plug_cb(ICH9LPCPMRegs
*pm
, DeviceState
*dev
, Error
**errp
)
435 if (pm
->acpi_memory_hotplug
.is_enabled
&&
436 object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
)) {
437 acpi_memory_plug_cb(&pm
->acpi_regs
, pm
->irq
, &pm
->acpi_memory_hotplug
,
439 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_CPU
)) {
440 acpi_cpu_plug_cb(&pm
->acpi_regs
, pm
->irq
, &pm
->gpe_cpu
, dev
, errp
);
442 error_setg(errp
, "acpi: device plug request for not supported device"
443 " type: %s", object_get_typename(OBJECT(dev
)));
447 void ich9_pm_device_unplug_request_cb(ICH9LPCPMRegs
*pm
, DeviceState
*dev
,
450 if (pm
->acpi_memory_hotplug
.is_enabled
&&
451 object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
)) {
452 acpi_memory_unplug_request_cb(&pm
->acpi_regs
, pm
->irq
,
453 &pm
->acpi_memory_hotplug
, dev
, errp
);
455 error_setg(errp
, "acpi: device unplug request for not supported device"
456 " type: %s", object_get_typename(OBJECT(dev
)));
460 void ich9_pm_device_unplug_cb(ICH9LPCPMRegs
*pm
, DeviceState
*dev
,
463 if (pm
->acpi_memory_hotplug
.is_enabled
&&
464 object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
)) {
465 acpi_memory_unplug_cb(&pm
->acpi_memory_hotplug
, dev
, errp
);
467 error_setg(errp
, "acpi: device unplug for not supported device"
468 " type: %s", object_get_typename(OBJECT(dev
)));
472 void ich9_pm_ospm_status(AcpiDeviceIf
*adev
, ACPIOSTInfoList
***list
)
474 ICH9LPCState
*s
= ICH9_LPC_DEVICE(adev
);
476 acpi_memory_ospm_status(&s
->pm
.acpi_memory_hotplug
, list
);