Mesa for Linux PPC

[xeno74]

FYI:

Hello Christian,

Well some time past, I would like to inform you that I managed to make it work, well no longer with a HD6970 but with another card, I would like to warn you about Mesa 24.2.x, it's causing problems in big endian related to not having 3D acceleration, I suggest not updating and staying on mesa 24.1.x, we had more analysis into it https://gitlab.freedesktop.org/mesa/mesa/-/issues/11933 and https://gitlab.freedesktop.org/mesa/mesa/-/issues/12048

Have a great week, best regards,
Link.

[sailorMH]

Hello,
after a longer time I installed Debian 3.11 on Sam460LE. Mesa version is 10.3.2-1.

I tested HD6870 (r600_dri.so) and receive error: radeon: ring 0 test failed,disabling GPU acceleration:

Code: Select all

[  +0.005330] [drm] Initialized
[  +0.003243] [drm] radeon kernel modesetting enabled.
[  +0.005809] [drm] initializing kernel modesetting (BARTS 0x1002:0x6738 0x1682:0x3103 0x00).
[  +0.008574] [drm] register mmio base: 0xe90000000
[  +0.004734] [drm] register mmio size: 131072
[  +0.180043] ATOM BIOS: BARTS
[  +0.003124] radeon 0001:81:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
[  +0.008926] radeon 0001:81:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
[  +0.007688] [drm] Detected VRAM RAM=1024M, BAR=256M
[  +0.004892] [drm] RAM width 256bits DDR
[  +0.003999] [TTM] Zone  kernel: Available graphics memory: 376164 kiB
[  +0.006470] [TTM] Zone highmem: Available graphics memory: 1031524 kiB
[  +0.006546] [TTM] Initializing pool allocator
[  +0.004397] [TTM] Initializing DMA pool allocator
[  +0.004815] [drm] radeon: 1024M of VRAM memory ready
[  +0.004994] [drm] radeon: 1024M of GTT memory ready.
[  +0.005026] [drm] Loading BARTS Microcode
[  +0.004063] [drm] Internal thermal controller with fan control
[  +0.011376] [drm] radeon: dpm initialized
[  +0.004147] [drm] GART: num cpu pages 262144, num gpu pages 262144
[  +0.051834] [drm] PCIE GART of 1024M enabled (table at 0x0000000000162000).
[  +0.007212] radeon 0001:81:00.0: WB enabled
[  +0.004230] radeon 0001:81:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0xffc01c00
[  +0.010120] radeon 0001:81:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0xffc01c0c
[  +0.026922] radeon 0001:81:00.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0xf9032118
[  +0.010135] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[  +0.006631] [drm] Driver supports precise vblank timestamp query.
[  +0.006114] radeon 0001:81:00.0: radeon: MSI limited to 32-bit
[  +0.005866] ppc4xx_setup_msi_irqs: fail allocating msi interrupt
[  +0.006082] [drm] radeon: irq initialized.
[  +0.221024] [drm:r600_ring_test] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)
[  +0.008832] radeon 0001:81:00.0: disabling GPU acceleration

I am using custom kernel from Spectre660, https://www.amigans.net/modules/newbb/v ... post151556

Please, do you know if this error is repairable?
Using of r600_dri.so from Debian 7 ( like in Pegasos 2 case some year ago ) not works. Also error is different thanthe Pegaos 2 one ( that time r_300 ring test succeeded ).
I will be glad for every idea.

Many thanks!

P.S. Spectre660 said, that there was no working graphics hardware acceleration on Sam460
P.P.S. Now I will Try Debian 8 on A1222+

[xeno74]

FYI: Mesa 24.3.1 Released With Many Graphics Driver Bug Fixes --phoronix.com (including Radeon R600 driver fixes)