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SubjectRe: acpi: broken suspend to RAM with v4.7-rc1
On 15 Jun, Zheng, Lv wrote:
> Hi, Rafael
>
> > From: rjwysocki@gmail.com [mailto:rjwysocki@gmail.com] On Behalf Of
> > Rafael J. Wysocki
> > Subject: Re: acpi: broken suspend to RAM with v4.7-rc1
> >
> > On Mon, Jun 13, 2016 at 12:07 PM, Andrey Skvortsov
> > <andrej.skvortzov@gmail.com> wrote:
> > > Hi Lv,
> > >
> > > On 13 Jun, Zheng, Lv wrote:
> > >> > From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-
> > >> > owner@vger.kernel.org] On Behalf Of Rafael J. Wysocki
> > >> > Subject: Re: acpi: broken suspend to RAM with v4.7-rc1
> > >> >
> > >> > On Saturday, June 11, 2016 01:49:22 PM Andrey Skvortsov wrote:
> > >> > > On 10 Jun, Rafael J. Wysocki wrote:
> > >> > > > On Friday, June 10, 2016 11:32:10 PM Andrey Skvortsov wrote:
> > >> > > > > Hi,
> > >> > > > >
> > >> > > > > On my laptop (DELL Vostro 1500) in v4.7-rc1 is broken suspend
> > to RAM.
> > >> > > > > Laptop doesn't finish suspend to RAM process (disks are off, but
> > >> > > > > WiFi and Power LEDs are still on). The only way to get it out of
> > >> > > > > this state, is to turn the power off.
> > >> > > > >
> > >> > > > > I've bisected the issue to commit 66b1ed5aa8dd25
> > >> > > > > [ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset
> > support
> > >> > > > > for acpi_hw_write()].
> > >> > > > >
> > >> > > > > If I revert this commit in v4.7-rc1 (or v4.7-rc2), suspend to RAM
> > >> > > > > is working again.
> > >> > > > >
> > >> > > > > The cause of this problem is that after this commit write to
> > PM1A
> > >> > > > > Control Block (16-bit register) is done using two 8-bit writes.
> > >> > > > > If I force this write to be 16-bit, then all is working as before.
> > >> > > > >
> > >> > > > > To get it working 'access_width' for PM1A Control Block needs
> > to
> > >> > > > > be 2 (16-bit), but it's 1 (8-bit).
> > >> [Lv Zheng]
> > >> Could you send me the acpidump of the machine?
> > > Here it is
> > >
> > https://dl.dropboxusercontent.com/u/24023626/dell_vostro_1500.acpid
> > ump.bin
> > >
> > >> > > > >
> > >> > > > > The root of the problem seems to be not the commit
> > >> > 66b1ed5aa8dd25
> > >> > > > > itself, but the ACPI tables in BIOS where wrong access_width
> > >> > > > > comes from. I fixed problem in FACP table, put it in initrd to
> > >> > > > > override FACP table from BIOS. This fixed the issue, suspend to
> > >> > > > > RAM is working now again.
> > >> > > > >
> > >> > > > > But I'm not sure whether is this proper fix for this problem.
> > >> > > > > Is there any place in the kernel, where such ACPI quirks are
> > placed?
> > >> [Lv Zheng]
> > >> My question would be:
> > >> Does Windows behave correctly for this table?
> > > Yes, suspend to RAM is working under Windows Vista.
> > > IIRC it worked under Windows XP too.
> > >
> > >> However there is a real case showing that there are real tables need us
> > to correctly support BitWidth/BitOffset.
> > >> Here is the information for you to refer:
> > >> http://permalink.gmane.org/gmane.linux.kernel.commits.head/313870
> > >>
> > >> > > >
> > >> > > > Well, if the commit in question caused a problem to happen for
> > you,
> > >> > > > it also might cause similar problems to happen elsewhere.
> > >> > > >
> > >> > > > It looks like we'll need to revert that commit.
> > >> > > Hi,
> > >> > >
> > >> > > or maybe to reset access_width AnyAcc from FACP table only for
> > PM1A
> > >> > > control register or even for all registers? This will fix the issue too.
> > >> >
> > >> > That's a good idea actually.
> > >> >
> > >> > > diff --git a/drivers/acpi/acpica/tbfadt.c
> > >> > > b/drivers/acpi/acpica/tbfadt.c index 6208069..a476e94 100644
> > >> > > --- a/drivers/acpi/acpica/tbfadt.c
> > >> > > +++ b/drivers/acpi/acpica/tbfadt.c
> > >> > > @@ -714,7 +714,14 @@ static void
> > acpi_tb_setup_fadt_registers(void)
> > >> > > }
> > >> > > }
> > >> > > }
> > >> > >
> > >> > > + /*
> > >> > > + * Reset access_width in the GAS for PM1A control register to
> > >> > > + * undefined value. Because in some cases this field contains
> > >> > > + * wrong value.
> > >> > > + */
> > >> > > + acpi_gbl_FADT.xpm1a_control_block.access_width = 0;
> > >> >
> > >> > OK, let's see what Bob and Lv think about that.
> > >> [Lv Zheng]
> > >> There is a commit in 4.7-rc2:
> > >>
> > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=
> > 7f9bef9d
> > >> Have you tried if the problem still exists in 4.7-rc2?
> > > I've just tried v4.7-rc3. It contains commit 7f9bef9d and the problem
> > > exists there too.
> >
> > I have decided to revert commit 66b1ed5aa8dd25 as in principle other
> > registers may be similarly affected on other systems.
> [Lv Zheng]
> Yes.
> I didn't prepare fallback mechanism for this support.
> It seems we have to do the reversion.
> Please revert it.
> Next time I'll prepare a quirk mechanism when this is upstreamed.
Lv, Could you CC me, when you'll upstream quirk mechanism?

> For Andrey:
> Could you provide me the DMIdecode output of the machine?
DMI binary dump is available here:
https://dl.dropboxusercontent.com/u/24023626/dell-vostro-1500.dmidecode.dump

And here is dmidecode output:

# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.4 present.
45 structures occupying 1977 bytes.
Table at 0x000F7180.

Handle 0xDA00, DMI type 218, 251 bytes
OEM-specific Type
Header and Data:
DA FB 00 DA B2 00 0D 5F 1F 37 40 7D 00 00 00 00
00 7E 00 02 00 00 00 40 00 04 00 01 00 41 00 04
00 00 00 65 00 05 00 00 00 66 00 05 00 01 00 5E
00 06 00 01 00 5F 00 06 00 00 00 89 01 07 00 00
00 8A 01 07 00 01 00 42 00 08 00 01 00 43 00 08
00 00 00 55 00 09 00 00 00 6D 00 09 00 01 00 2D
00 0A 00 02 00 6E 00 0A 00 01 00 2E 00 0A 00 00
00 11 01 0B 00 00 00 10 01 0B 00 01 00 F0 00 0C
00 01 00 ED 00 0C 00 00 00 41 01 0D 00 01 00 40
01 0D 00 00 00 47 01 0E 00 01 00 46 01 0E 00 00
00 4A 01 0F 00 00 00 4B 01 0F 00 01 00 52 01 10
00 01 00 53 01 10 00 00 00 80 01 11 00 01 00 7F
01 11 00 00 00 7C 01 12 00 01 00 7B 01 12 00 00
00 7E 01 13 00 01 00 7D 01 13 00 00 00 92 01 14
00 00 00 91 01 14 00 01 00 94 01 15 00 00 00 93
01 15 00 01 00 FF FF 00 00 00 00

Handle 0xDA01, DMI type 218, 251 bytes
OEM-specific Type
Header and Data:
DA FB 01 DA B2 00 0D 5F 1F 37 40 86 01 16 00 01
00 85 01 16 00 00 00 82 01 17 00 01 00 81 01 17
00 00 00 84 01 18 00 01 00 83 01 18 00 00 00 9B
01 19 00 00 00 9C 01 19 00 01 00 9D 01 19 00 02
00 9E 01 19 00 03 00 8B 01 1A 00 00 00 8C 01 1A
00 01 00 EA 00 1B 00 00 00 EB 00 1B 00 01 00 EC
00 1B 00 02 00 28 00 1C 00 00 00 29 00 1C 00 01
00 2A 00 1C 00 02 00 2B 00 1D 00 00 00 2C 00 1E
00 00 00 E7 00 1F 00 01 00 E6 00 1F 00 00 00 0E
01 20 00 01 00 0F 01 20 00 00 00 9B 00 21 00 01
00 9C 00 21 00 00 00 4D 01 22 00 01 00 4C 01 22
00 00 00 01 01 23 00 00 00 02 01 23 00 01 00 04
01 23 00 02 00 37 01 24 00 00 00 38 01 24 00 01
00 D9 01 25 00 01 00 D8 01 25 00 00 00 EA 01 26
00 00 00 EB 01 26 00 01 00 EC 01 27 00 00 00 ED
01 27 00 01 00 FF FF 00 00 00 00

Handle 0xDA02, DMI type 218, 53 bytes
OEM-specific Type
Header and Data:
DA 35 02 DA B2 00 0D 5F 1F 37 40 76 01 76 01 01
00 75 01 75 01 01 00 01 F0 01 F0 00 00 02 F0 02
F0 00 00 03 F0 03 F0 00 00 04 F0 04 F0 00 00 FF
FF 00 00 00 00

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Dell Inc.
Version: A06
Release Date: 04/21/2008
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 1024 kB
Characteristics:
ISA is supported
PCI is supported
PC Card (PCMCIA) is supported
PNP is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
3.5"/720 kB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
AGP is supported
Smart battery is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
BIOS Revision: 0.6
Firmware Revision: 0.6

Handle 0x0100, DMI type 1, 27 bytes
System Information
Manufacturer: Dell Inc.
Product Name: Vostro 1500
Version: Not Specified
Serial Number: 2KPDQF1
UUID: 44454C4C-4B00-1050-8044-B2C04F514631
Wake-up Type: Power Switch
SKU Number: Not Specified
Family:

Handle 0x0200, DMI type 2, 9 bytes
Base Board Information
Manufacturer: Dell Inc.
Product Name: 0NX907
Version:
Serial Number: .2KPDQF1.CN486438228200.
Asset Tag:

Handle 0x0300, DMI type 3, 13 bytes
Chassis Information
Manufacturer: Dell Inc.
Type: Portable
Lock: Not Present
Version: Not Specified
Serial Number: 2KPDQF1
Asset Tag: Not Specified
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None

Handle 0x0400, DMI type 4, 40 bytes
Processor Information
Socket Designation: Microprocessor
Type: Central Processor
Family: Core 2 Duo
Manufacturer: Intel
ID: 76 06 01 00 FF FB EB BF
Signature: Type 0, Family 6, Model 23, Stepping 6
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Not Specified
Voltage: 3.3 V
External Clock: 200 MHz
Max Speed: 2600 MHz
Current Speed: 2600 MHz
Status: Populated, Enabled
Upgrade: None
L1 Cache Handle: 0x0700
L2 Cache Handle: 0x0701
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Core Count: 2
Core Enabled: 2
Thread Count: 2
Characteristics:
64-bit capable

Handle 0x0700, DMI type 7, 19 bytes
Cache Information
Socket Designation: Not Specified
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
Supported SRAM Types:
Unknown
Installed SRAM Type: Unknown
Speed: Unknown
Error Correction Type: None
System Type: Data
Associativity: 4-way Set-associative

Handle 0x0701, DMI type 7, 19 bytes
Cache Information
Socket Designation: Not Specified
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Varies With Memory Address
Location: Internal
Installed Size: 6144 kB
Maximum Size: 6144 kB
Supported SRAM Types:
Pipeline Burst
Installed SRAM Type: Pipeline Burst
Speed: 15 ns
Error Correction Type: None
System Type: Unified
Associativity: Other

Handle 0x0804, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB

Handle 0x0806, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: MONITOR
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: DB-15 female
Port Type: Video Port

Handle 0x080B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: FireWire
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: IEEE 1394
Port Type: Firewire (IEEE P1394)

Handle 0x080C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: Modem
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: RJ-11
Port Type: Modem Port

Handle 0x080D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: Ethernet
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: RJ-45
Port Type: Network Port

Handle 0x0A00, DMI type 10, 6 bytes
On Board Device Information
Type: Video
Status: Enabled
Description: Intel Crestline Graphics

Handle 0x0A01, DMI type 10, 6 bytes
On Board Device Information
Type: Sound
Status: Enabled
Description: Sigmatel 9205

Handle 0x0B00, DMI type 11, 5 bytes
OEM Strings
String 1: Dell System
String 2: 5[0003]
String 3: 13[PP22L]

Handle 0x0D00, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 1
en|US|iso8859-1
Currently Installed Language: en|US|iso8859-1

Handle 0x1000, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 4 GB
Error Information Handle: Not Provided
Number Of Devices: 2

Handle 0x1100, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: DIMM_A
Bank Locator: Not Specified
Type: DDR
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: 7F98000000000000
Serial Number: 453E7A84
Asset Tag: 000B05
Part Number:

Handle 0x1101, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 256 MB
Form Factor: DIMM
Set: None
Locator: DIMM_B
Bank Locator: Not Specified
Type: DDR
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: 7F7F7F7F7F020000
Serial Number: 00000000
Asset Tag: 000000
Part Number: PSD24G8002S

Handle 0x1301, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0008FFFFFFF
Range Size: 2304 MB
Physical Array Handle: 0x1000
Partition Width: 1

Handle 0x1401, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0001FFFFFFF
Range Size: 512 MB
Physical Device Handle: 0x1100
Memory Array Mapped Address Handle: 0x1301
Partition Row Position: 1
Interleave Position: 1
Interleaved Data Depth: 8

Handle 0x1411, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00020000000
Ending Address: 0x0008FFFFFFF
Range Size: 1792 MB
Physical Device Handle: 0x1100
Memory Array Mapped Address Handle: 0x1301
Partition Row Position: 1

Handle 0x1402, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0001FFFFFFF
Range Size: 512 MB
Physical Device Handle: 0x1101
Memory Array Mapped Address Handle: 0x1301
Partition Row Position: 1
Interleave Position: 2
Interleaved Data Depth: 8

Handle 0x1412, DMI type 126, 19 bytes
Inactive

Handle 0x1500, DMI type 21, 7 bytes
Built-in Pointing Device
Type: Touch Pad
Interface: Bus Mouse
Buttons: 2

Handle 0x1600, DMI type 22, 26 bytes
Portable Battery
Location: Sys. Battery Bay
Manufacturer: Sanyo
Name: DELL UW28082
Design Capacity: 78000 mWh
Design Voltage: 11100 mV
SBDS Version: 1.0
Maximum Error: 1%
SBDS Serial Number: 1019
SBDS Manufacture Date: 2008-02-15
SBDS Chemistry: LION
OEM-specific Information: 0x00000001

Handle 0x1B00, DMI type 27, 12 bytes
Cooling Device
Type: Fan
Status: OK
OEM-specific Information: 0x0000DD00

Handle 0x1C00, DMI type 28, 20 bytes
Temperature Probe
Description: CPU Internal Temperature
Location: Processor
Status: OK
Maximum Value: 127.0 deg C
Minimum Value: 0.0 deg C
Resolution: 1.000 deg C
Tolerance: 0.5 deg C
Accuracy: Unknown
OEM-specific Information: 0x0000DC00

Handle 0x2000, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected

Handle 0xB000, DMI type 176, 5 bytes
OEM-specific Type
Header and Data:
B0 05 00 B0 01

Handle 0xB100, DMI type 177, 12 bytes
OEM-specific Type
Header and Data:
B1 0C 00 B1 02 00 00 00 00 00 00 00

Handle 0xB200, DMI type 178, 6 bytes
OEM-specific Type
Header and Data:
B2 06 00 B2 99 99

Handle 0xD000, DMI type 208, 10 bytes
OEM-specific Type
Header and Data:
D0 0A 00 D0 01 04 FE 00 28 02

Handle 0xD800, DMI type 216, 9 bytes
OEM-specific Type
Header and Data:
D8 09 00 D8 01 03 01 F0 03
Strings:
Intel Corp.

1466


Handle 0xD900, DMI type 217, 8 bytes
OEM-specific Type
Header and Data:
D9 08 00 D9 01 02 01 03
Strings:
US-101
Proprietary

Handle 0xDB00, DMI type 219, 9 bytes
OEM-specific Type
Header and Data:
DB 09 00 DB 03 01 02 03 FF
Strings:
System Device Bay
Floppy, Battery, CD-ROM, CD-RW, DVD, DVD+RW, DVD+/-RW, Hard Disk, BLU-RAY
Hard-Disk

Handle 0xDC00, DMI type 220, 22 bytes
OEM-specific Type
Header and Data:
DC 16 00 DC 01 F0 00 00 02 F0 00 00 00 00 03 F0
04 F0 00 00 00 00

Handle 0xDD00, DMI type 221, 19 bytes
OEM-specific Type
Header and Data:
DD 13 00 DD 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00

Handle 0xD400, DMI type 212, 37 bytes
OEM-specific Type
Header and Data:
D4 25 00 D4 74 00 75 00 00 10 2D 2E 5C 00 78 BF
40 5D 00 78 BF 00 08 00 1D DF 00 03 00 1D DF 00
FF FF 00 00 00

Handle 0xD401, DMI type 212, 17 bytes
OEM-specific Type
Header and Data:
D4 11 01 D4 74 00 75 00 03 40 49 4A FF FF 00 00
00

Handle 0xDE00, DMI type 222, 16 bytes
OEM-specific Type
Header and Data:
DE 10 00 DE 01 02 FF FF 00 00 00 00 00 00 00 01

Handle 0x7F00, DMI type 127, 4 bytes
End Of Table



--
Best regards,
Andrey Skvortsov


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