Message-Id: <201308272058.50345.linux@rainbow-software.org>
Date:	Tue, 27 Aug 2013 20:58:49 +0200
From:	Ondrej Zary <linux@...nbow-software.org>
To:	"Deucher, Alexander" <Alexander.Deucher@....com>
Cc:	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: Asus F5RL laptop unable to resume from S3 because of radeon module

On Monday 26 August 2013 23:55:27 Deucher, Alexander wrote:
> > -----Original Message-----
> > From: Ondrej Zary [mailto:linux@...nbow-software.org]
> > Sent: Monday, August 26, 2013 5:23 PM
> > To: Deucher, Alexander
> > Cc: Kernel development list
> > Subject: Re: Asus F5RL laptop unable to resume from S3 because of radeon
> > module
> >
> > On Monday 26 August 2013 00:01:11 Ondrej Zary wrote:
> > > On Sunday 25 August 2013 19:12:32 Ondrej Zary wrote:
> > > > On Sunday 25 August 2013 16:51:06 Deucher, Alexander wrote:
> > > > > > -----Original Message-----
> > > > > > From: Ondrej Zary [mailto:linux@...nbow-software.org]
> > > > > > Sent: Friday, August 23, 2013 1:55 PM
> > > > > > To: Deucher, Alexander
> > > > > > Cc: Kernel development list
> > > > > > Subject: Re: Asus F5RL laptop unable to resume from S3 because of
> > > > > > radeon module
> > > > > >
> > > > > > On Friday 23 August 2013 00:08:33 Ondrej Zary wrote:
> > > > > > > On Thursday 22 August 2013 22:56:03 Ondrej Zary wrote:
> > > > > > > > On Thursday 22 August 2013 22:24:17 Deucher, Alexander wrote:
> > > > > > > > > > -----Original Message-----
> > > > > > > > > > From: Ondrej Zary [mailto:linux@...nbow-software.org]
> > > > > > > > > > Sent: Thursday, August 22, 2013 4:00 PM
> > > > > > > > > > To: Deucher, Alexander
> > > > > > > > > > Cc: Kernel development list
> > > > > > > > > > Subject: Re: Asus F5RL laptop unable to resume from S3
> > > > > > > > > > because of radeon module
> > > > > > > > > >
> > > > > > > > > > On Thursday 22 August 2013 21:49:41 Deucher, Alexander
> >
> > wrote:
> > > > > > > > > > > > -----Original Message-----
> > > > > > > > > > > > From: Ondrej Zary [mailto:linux@...nbow-software.org]
> > > > > > > > > > > > Sent: Thursday, August 22, 2013 2:18 PM
> > > > > > > > > > > > To: Kernel development list
> > > > > > > > > > > > Cc: Deucher, Alexander
> > > > > > > > > > > > Subject: Asus F5RL laptop unable to resume from S3
> > > > > > > > > > > > because of radeon module
> > > > > > > > > > > >
> > > > > > > > > > > > Hello,
> > > > > > > > > > > > resume from suspend-to-RAM (S3) on Asus F5RL laptop
> >
> > does
> >
> > > > > > > > > > > > not work. According to many reports found by Google,
> > > > > > > > > > > > it was always been that and there
> > > > > > > > > > > > is no fix or workaround.
> > > > > > > > > > >
> > > > > > > > > > > Make sure your kernel has this patch:
> > > > > > > > > > > http://git.kernel.org/cgit/linux/kernel/git/torvalds/li
> > > > > > > > > > >nux. gi t/ comm it /? id=c
> > > > > > > > > > > ef1d00cd56f600121ad121875655ad410a001b8
> > > > > > > > > >
> > > > > > > > > > Just tried latest git (3.11-rc6+) and the problem
> > > > > > > > > > persists.
> > > > > > > > >
> > > > > > > > > You might try adding a quirk for your system in
> > > > > > > > > radeon_combios_asic_init() in radeon_combios.c.  You can
> > > > > > > > > try
> > > > > >
> > > > > > something
> > > > > >
> > > > > > > > > like this for testing:
> > > > > > > > >
> > > > > > > > > diff --git a/drivers/gpu/drm/radeon/radeon_combios.c
> > > > > > > > > b/drivers/gpu/drm/radeon/radeon_combios.c index
> > > > > > > > > 68ce360..0419a2c
> > > > > >
> > > > > > 100644
> > > > > >
> > > > > > > > > --- a/drivers/gpu/drm/radeon/radeon_combios.c
> > > > > > > > > +++ b/drivers/gpu/drm/radeon/radeon_combios.c
> > > > > > > > > @@ -3398,6 +3398,8 @@ void radeon_combios_asic_init(struct
> > > > > >
> > > > > > drm_device
> > > > > >
> > > > > > > > > *dev) rdev->pdev->subsystem_device == 0x30ae)
> > > > > > > > >                 return;
> > > > > > > > >
> > > > > > > > > +       return;
> > > > > > > > > +
> > > > > > > > >         /* DYN CLK 1 */
> > > > > > > > >         table = combios_get_table_offset(dev,
> > > > > >
> > > > > > COMBIOS_DYN_CLK_1_TABLE);
> > > > > >
> > > > > > > > >         if (table)
> > > > > > > > >
> > > > > > > > > If that doesn't work, you'll probably have to track down
> > > > > > > > > where it's hanging during resume, or compare registers
> > > > > > > > > before and after resume
> > > > > >
> > > > > > to
> > > > > >
> > > > > > > > > see if it's some particular state that's causing a problem.
> > > > > > > >
> > > > > > > > No change.
> > > > > > > >
> > > > > > > > Inserted "return -1;" before radeon_device_init() to
> > > > > > > > radeon_driver_load_kms() - driver fails to load and resume
> > > > > > > > works. Moved it (and changed to "r = -1; goto out;") a bit
> > > > > > > > down before radeon_modeset_init() - driver fails to load and
> > > > > > > > resume stopped
> > > > > >
> > > > > > working.
> > > > > >
> > > > > > > Going deeper... it works before rs400_startup() and does not
> > > > > > > work after that. Will continue later.
> > > > > >
> > > > > > Tracked the problem down to rs400_gart_enable(). When this
> >
> > "Disable
> >
> > > > > > AGP mode"
> > > > > > code is commented out, the machine resumes fine:
> > > > > >
> > > > > >         if ((rdev->family == CHIP_RS690) || (rdev->family ==
> > > > > > CHIP_RS740)) { WREG32_MC(RS480_MC_MISC_CNTL,
> > > > > >                         (RS480_GART_INDEX_REG_EN |
> > > > > > RS690_BLOCK_GFX_D3_EN)); } else {
> > > > > >               WREG32_MC(RS480_MC_MISC_CNTL,
> >
> > RS480_GART_INDEX_REG_EN);
> >
> > > > > >         }
> > > > >
> > > > > Does the driver work properly after resume with that part commented
> >
> > out
> >
> > > > > or does it just avoid the hang?
> > > >
> > > > Console seems to work fine, haven't tested X, 3D or video.
> > >
> > > Testing it right now - everything seems to work. X, accelerated video
> > > (mplayer), 3D (glxgears). Both before and after suspend.
> > > That code does something with GART so maybe I should test something
> >
> > like
> >
> > > OpenArena (have to download it first).
> >
> > OpenArena works fine with the code commented out. Both before and after
> > suspend.
>
> Does the attached patch also work?  I suspect we should be RMWing the
> register rather than only setting that bit.

Great, this patch works fine!

BTW. Value of the RS480_MC_MISC_CNTL register (before we change it) is 
0x3381100 on this system. Most of the bits are not documented in AMD register 
guide so they're probably reserved.

> Alex
>
> > > > > Alex
> > > > >
> > > > > > > > > Alex
> > > > > > > > >
> > > > > > > > > > > Alex
> > > > > > > > > > >
> > > > > > > > > > > > Did some tests:
> > > > > > > > > > > >
> > > > > > > > > > > > radeon module loaded (usual state):
> > > > > > > > > > > > After "echo mem>/sys/power/state", the laptop
> > > > > > > > > > > > suspends
> > > > > >
> > > > > > correctly
> > > > > >
> > > > > > > > > > (power
> > > > > > > > > >
> > > > > > > > > > > > LED
> > > > > > > > > > > > blinks). When power button is pressed, power LED goes
> > > > > > > > > > > > on and that's all. No more activity, machine is
> > > > > > > > > > > > frozen completely.
> > > > > > > > > > > >
> > > > > > > > > > > > radeon module not loaded at all:
> > > > > > > > > > > > Laptop resumes correctly (keyboard LED work, network
> > > > > > > > > > > > works),
> > > > > >
> > > > > > only
> > > > > >
> > > > > > > > > > > > the
> > > > > > > > > >
> > > > > > > > > > LCD
> > > > > > > > > >
> > > > > > > > > > > > is
> > > > > > > > > > > > blank (obviously). Loading radeon module now
> > > > > > > > > > > > initializes the card properly: LCD goes on and
> > > > > > > > > > > > console works.
> > > > > > > > > > > >
> > > > > > > > > > > > radeon module loaded (but fbcon module not loaded)
> > > > > > > > > > > > and then
> > > > > > > > > >
> > > > > > > > > > unloaded:
> > > > > > > > > > > > Machine freezes the same way as when the module is
> > > > > > > > > > > > loaded.
> > > > > > > > > > > >
> > > > > > > > > > > > So it looks like the radeon module does some
> > > > > > > > > > > > initialization that prevents resume from working.
> > > > > > > > > > > >
> > > > > > > > > > > > Hibernation works fine.
> > > > > > > > > > > >
> > > > > > > > > > > > Any ideas what to test or how to debug this?
> > > > > > > > > > > >
> > > > > > > > > > > > Details:
> > > > > > > > > > > > 01:05.0 VGA compatible controller [0300]: Advanced
> > > > > > > > > > > > Micro
> > > > > >
> > > > > > Devices,
> > > > > >
> > > > > > > > > > > > Inc. [AMD/ATI] RC410M [Mobility Radeon Xpress 200M]
> > > > > >
> > > > > > [1002:5a62]
> > > > > >
> > > > > > > > > > > > (prog-if
> > > > > > > > > >
> > > > > > > > > > 00
> > > > > > > > > >
> > > > > > > > > > > > [VGA controller])
> > > > > > > > > > > >         Subsystem: ASUSTeK Computer Inc. Device
> > > > > > > > > > > > [1043:1402] Flags: bus master, 66MHz, medium devsel,
> > > > > > > > > > > > latency 64, IRQ 10 Memory at c0000000 (32-bit,
> > > > > > > > > > > > prefetchable) [size=256M] I/O ports at 9800
> > > > > > > > > > > > [size=256] Memory at fa8f0000 (32-bit,
> > > > > > > > > > > > non-prefetchable) [size=64K] Expansion ROM at
> > > > > > > > > > > > fa8c0000 [disabled] [size=128K] Capabilities: [50]
> > > > > > > > > > > > Power Management version 2 Capabilities: [80] MSI:
> > > > > > > > > > > > Enable- Count=1/1 Maskable- 64bit- Kernel driver in
> > > > > > > > > > > > use: radeon
> > > > > > > > > > > >
> > > > > > > > > > > > [    4.836009] [drm] radeon kernel modesetting
> > > > > > > > > > > > enabled. [    4.837169] [drm] initializing kernel
> > > > > > > > > > > > modesetting (RS400 0x1002:0x5A62 0x1043:0x1402).
> > > > > > > > > > > > [    4.837251] [drm] register mmio base: 0xFA8F0000
> > > > > > > > > > > > [    4.837302] [drm] register mmio size: 65536
> > > > > > > > > > > > [    4.837570] [drm] Generation 2 PCI interface,
> > > > > > > > > > > > using max accessible memory [    4.837653] radeon
> > > > > > > > > > > > 0000:01:05.0: VRAM:
> > > > > >
> > > > > > 128M
> > > > > >
> > > > > > > > > > 0x0000000078000000
> > > > > > > > > >
> > > > > > > > > > > > - 0x000000007FFFFFFF (128M used)
> > > > > > > > > > > > [    4.837714] radeon 0000:01:05.0: GTT: 512M
> > > > > > > > > > > > 0x0000000080000000 - 0x000000009FFFFFFF
> > > > > > > > > > > > [    4.837787] [drm] Detected VRAM RAM=128M,
> >
> > BAR=256M
> >
> > > > > > > > > > > > [    4.837839] [drm] RAM width 128bits DDR
> > > > > > > > > > > > [    4.839854] [TTM] Zone  kernel: Available graphics
> > > > > > > > > > > > memory: 444588 kiB [    4.839907] [TTM] Zone highmem:
> > > > > > > > > > > > Available graphics memory: 972784
> > > > > > > > > >
> > > > > > > > > > kiB
> > > > > > > > > >
> > > > > > > > > > > > [    4.839959] [TTM] Initializing pool allocator
> > > > > > > > > > > > [    4.840042] [drm] radeon: 128M of VRAM memory
> > > > > > > > > > > > ready [    4.840094] [drm] radeon: 512M of GTT memory
> > > > > > > > > > > > ready. [    4.840160] [drm] GART: num cpu pages
> > > > > > > > > > > > 131072, num gpu pages 131072 [    4.866905] [drm]
> > > > > > > > > > > > radeon: 2 quad pipes, 1 z pipes initialized. [   
> > > > > > > > > > > > 4.872945] [drm] PCIE GART of 512M enabled (table at
> > > > > > > > > > > > 0x0000000035A00000).
> > > > > > > > > > > > [    4.873213] radeon 0000:01:05.0: WB enabled
> > > > > > > > > > > > [    4.873301] radeon 0000:01:05.0: fence driver on
> > > > > > > > > > > > ring 0 use gpu addr 0x0000000080000000 and cpu addr
> >
> > 0xf592c000
> >
> > > > > > > > > > > > [    4.874929] [drm] Supports vblank timestamp
> > > > > > > > > > > > caching Rev 1 (10.10.2010). [    4.874988] [drm]
> > > > > > > > > > > > Driver supports precise vblank timestamp query. [   
> > > > > > > > > > > > 4.875055] [drm] radeon: irq initialized. [   
> > > > > > > > > > > > 4.875119] [drm] Loading R300 Microcode [    4.962083]
> > > > > > > > > > > > ohci_hcd: USB 1.1 'Open' Host Controller (OHCI)
> > > > > > > > > > > > Driver [    5.088150] ohci-pci: OHCI PCI platform
> > > > > > > > > > > > driver [    5.141799] [drm] radeon: ring at
> > > > > > > > > > > > 0x0000000080001000 [    5.141883] [drm] ring test
> > > > > > > > > > > > succeeded in 2 usecs
> > > > > > > > > > > > [    5.142064] spurious 8259A interrupt: IRQ7.
> > > > > > > > > > > > [    5.142073] [drm] ib test succeeded in 0 usecs
> > > > > > > > > > > > [    5.142317] [drm] Panel ID String: LPL
> > > > > > > > > > > > [    5.142370] [drm] Panel Size 1280x800
> > > > > > > > > > > > [    5.166305] [drm] radeon legacy LVDS backlight
> > > > > > > > > > > > initialized [    5.166358] [drm] Radeon Display
> > > > > > > > > > > > Connectors [    5.166408] [drm] Connector 0:
> > > > > > > > > > > > [    5.166458] [drm]   VGA-1
> > > > > > > > > > > > [    5.166509] [drm]   DDC: 0x68 0x68 0x68 0x68 0x68
> > > > > > > > > > > > 0x68 0x68 0x68 [    5.166560] [drm]   Encoders:
> > > > > > > > > > > > [    5.166610] [drm]     CRT1: INTERNAL_DAC2
> > > > > > > > > > > > [    5.166660] [drm] Connector 1:
> > > > > > > > > > > > [    5.166710] [drm]   LVDS-1
> > > > > > > > > > > > [    5.166760] [drm]   DDC: 0x198 0x198 0x19c 0x19c
> > > > > > > > > > > > 0x1a0 0x1a0 0x1a4 0x1a4 [    5.166812] [drm]  
> > > > > > > > > > > > Encoders: [    5.166862] [drm]     LCD1:
> > > > > > > > > > > > INTERNAL_LVDS [    5.426968] [drm] fb mappable at
> > > > > > > > > > > > 0xC0040000 [    5.427026] [drm] vram apper at
> > > > > > > > > > > > 0xC0000000 [    5.427076] [drm] size 4096000
> > > > > > > > > > > > [    5.427126] [drm] fb depth is 24
> > > > > > > > > > > > [    5.427176] [drm]    pitch is 5120
> > > > > > > > > > > > [    5.427388] radeon 0000:01:05.0: fb0: radeondrmfb
> > > > > > > > > > > > frame buffer device [    5.427442] radeon
> > > > > > > > > > > > 0000:01:05.0: registered panic notifier [   
> > > > > > > > > > > > 5.427501] [drm] Initialized radeon 2.34.0 20080528
> > > > > > > > > > > > for 0000:01:05.0 on minor 0
> > > > > > > > > > > >
> > > > > > > > > > > > --
> > > > > > > > > > > > Ondrej Zary
> > > > > > > > > >
> > > > > > > > > > --
> > > > > > > > > > Ondrej Zary
> > > > > >
> > > > > > --
> > > > > > Ondrej Zary
> > > > >
> > > > > --
> > > > > To unsubscribe from this list: send the line "unsubscribe
> > > > > linux-kernel" in the body of a message to majordomo@...r.kernel.org
> > > > > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > > > > Please read the FAQ at  http://www.tux.org/lkml/
> >
> > --
> > Ondrej Zary


-- 
Ondrej Zary
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