DMA ring test failure on Radeon HD 8970M

[Alex Deucher]

On Tue, Dec 3, 2013 at 8:20 AM, Joe Julian <joe at julianfamily.org> wrote:
>
>
> Alex Deucher <alexdeucher at gmail.com> wrote:
>>On Fri, Nov 29, 2013 at 7:30 PM, Joe Julian <joe at julianfamily.org>
>>wrote:
>>>
>>> This MSI laptop has two crossfire connected video processors in it,
>>> 00:01.0 has a HD 8650G that seems to initialize properly, and at
>>01:00.0
>>> an HD 8970M that fails the ring 3 test, "radeon: ring 3 test failed
>>(0xDFCFFBFF)".
>>
>>It looks like there's a problem with the rom for the dGPU:
>>
>>[   61.008250] ACPI Error: Field [TEMP] at 524288 exceeds Buffer
>>[TVGA] size 512000 (bits) (20130927/dsopcode-236)
>>[   61.008749] ACPI Error: Method parse/execution failed
>>[\_SB_.PCI0.VGA_.ATRM] (Node ffff880233ad1e30), AE_AML_BUFFER_LIMIT
>>(20130927/psparse-536)
>>[   61.009991] failed to evaluate ATRM got AE_AML_BUFFER_LIMIT
>>[   61.010204] ATOM BIOS: MSI
>>[   61.010270] [drm] GPU not posted. posting now...
>>[   61.018737] radeon 0000:01:00.0: limiting VRAM
>>[   61.018765] radeon 0000:01:00.0: VRAM: 1047552M 0x0000000000000000
>>- 0x000000FFBFFFFFFF (1047552M used)
>>[   61.018814] radeon 0000:01:00.0: GTT: 1024M 0x000000FFC0000000 -
>>0x000000FFFFFFFFFF
>>[   61.018853] [drm] Detected VRAM RAM=1047552M, BAR=256M
>>
>>1047552M of vram is obviously wrong.  How much vram is supposed to be
>>on the card?
>
> According to Windows, 2GB:
> Name    AMD Radeon(TM) HD8970M
> PNP Device ID    PCI\VEN_1002&DEV_6801&SUBSYS_10F11462&REV_00\4&99EBB28&0&0018
> Adapter Type    AMD Radeon Graphics Processor (0x6801), Advanced Micro Devices, Inc. compatible
> Adapter Description    AMD Radeon(TM) HD8970M
> Adapter RAM    (2,147,483,648) bytes
> Installed Drivers    aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
> Driver Version    13.200.11.0
> INF File    oem17.inf (ati2mtag_R576B section)
> Color Planes    Not Available
> Color Table Entries    4294967296
> Resolution    1920 x 1080 x 60 hertz
> Bits/Pixel    32
> Memory Address    0xD0000000-0xDFFFFFFF
> Memory Address    0xFEAC0000-0xFEAFFFFF
> I/O Port    0x0000EF00-0x0000EFFF
> IRQ Channel    IRQ 4294967283
>>
>>Can you send me the output from this patch?
>>
>>diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
>>index 6a64cca..84a7e26 100644
>>--- a/drivers/gpu/drm/radeon/si.c
>>+++ b/drivers/gpu/drm/radeon/si.c
>>@@ -3884,6 +3884,7 @@ static int si_mc_init(struct radeon_device *rdev)
>>        /* size in MB on si */
>>    rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
>>  rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
>>+       DRM_INFO("CONFIG_MEMSIZE: 0x%08x\n", RREG32(CONFIG_MEMSIZE));
>>        rdev->mc.visible_vram_size = rdev->mc.aper_size;
>>        si_vram_gtt_location(rdev, &rdev->mc);
>>        radeon_update_bandwidth_info(rdev);
>>
>>
> CONFIG_MEMSIZE=0X03800800

Does this patch fix the issues?

Alex


>>>
>>> Throwing in some writel and readl tests before even trying the dma
>>test,
>>> I see that the memory isn't being changed with writel in the first
>>> place.
>>>
>>> ----
>>>         tmp = 0xDEADBEEF;
>>>         writel(tmp, ptr);
>>>         tmp = readl(ptr);
>>>         if (tmp != 0xDEADBEEF)
>>>                 DRM_ERROR("radeon: ring %d memory write failed (0x%
>>> 08X)\n", ring->idx, tmp);
>>> ----
>>>
>>> radeon: ring 3 memory write failed (0xDFCFFBFF)
>>>
>>> Looks to me like we're trying to write to a rom address, but I'm a
>>> complete novice at this so I could be completely off.
>>>
>>>
>>> I'm using kernel 3.13.0-0.rc1.git3
>>>
>>> What else could I look at?
>>>
>>>
>>> _______________________________________________
>>> xorg-driver-ati mailing list
>>> xorg-driver-ati at lists.x.org
>>> http://lists.x.org/mailman/listinfo/xorg-driver-ati
>>>
>
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