Comment # 21
on bug 88868
from Dmitriy
for example some debug in function "nouveau_bios_shadow_pramin" in kernel
3.18.5:
if (device->card_type >= NV_50) {
if (device->card_type >= NV_C0 && device->card_type < GM100) {
printk ("%s(%d)\n",__FUNCTION__,__LINE__);
if (nv_rd32(bios, 0x022500) & 0x00000001)
return;
} else
if (device->card_type >= GM100) {
printk ("##%s(%d)\n",__FUNCTION__,__LINE__);
if (nv_rd32(bios, 0x021c04) & 0x00000001)
return;
}
addr = nv_rd32(bios, 0x619f04);
printk ("addr0=%x\n",addr);
.....
bar0 = nv_mask(bios, 0x001700, 0xffffffff, addr >> 16);
printk ("bar0=%x\n",bar0);
log from x86_64:
[ 0.279595] [drm] Initialized drm 1.1.0 20060810
[ 0.280027] nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0d90a0a1
[ 0.280196] nouveau [ DEVICE][0000:01:00.0] Chipset: GF119 (NVD9)
[ 0.280361] nouveau [ DEVICE][0000:01:00.0] Family : NVC0
[ 0.280533] nouveau [ VBIOS][0000:01:00.0] checking PRAMIN for image...
[ 0.280723] nouveau_bios_shadow_pramin(94)
[ 0.280881] addr=3ffe09
[ 0.281032] bar0=3ff0
[ 0.358740] nouveau [ VBIOS][0000:01:00.0] ... appears to be valid
[ 0.358913] nouveau [ VBIOS][0000:01:00.0] using image from PRAMIN
[ 0.359161] nouveau [ VBIOS][0000:01:00.0] BIT signature found
[ 0.359333] nouveau [ VBIOS][0000:01:00.0] version 75.19.55.00.02
[ 0.359705] nouveau 0000:01:00.0: irq 25 for MSI/MSI-X
[ 0.359712] nouveau [ PMC][0000:01:00.0] MSI interrupts enabled
[ 0.359974] nouveau W[ PFB][0000:01:00.0][0x00000000][ffff88021385e800]
reclocking of this ram type unsupported
[ 0.360322] nouveau [ PFB][0000:01:00.0] RAM type: DDR3
[ 0.360542] nouveau [ PFB][0000:01:00.0] RAM size: 1024 MiB
[ 0.360794] nouveau [ PFB][0000:01:00.0] ZCOMP: 0 tags
[ 0.362663] nouveau [ VOLT][0000:01:00.0] GPU voltage: 900000uv
[ 0.412297] nouveau [ PTHERM][0000:01:00.0] FAN control: PWM
[ 0.412543] nouveau [ PTHERM][0000:01:00.0] fan management: automatic
[ 0.412822] nouveau [ PTHERM][0000:01:00.0] internal sensor: yes
[ 0.413119] nouveau [ CLK][0000:01:00.0] 07: core 270 MHz memory 405
MHz
[ 0.413454] nouveau [ CLK][0000:01:00.0] 0f: core 810 MHz memory 500
MHz
[ 0.413951] nouveau [ CLK][0000:01:00.0] --: core 270 MHz memory 405
MHz
log from powerpc e5500 64bit:
[drm] Initialized drm 1.1.0 20060810
nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0d90a0a1
nouveau [ DEVICE][0000:01:00.0] Chipset: GF119 (NVD9)
nouveau [ DEVICE][0000:01:00.0] Family : NVC0
nouveau [ VBIOS][0000:01:00.0] checking OpenFirmware for image...
nouveau [ VBIOS][0000:01:00.0] Unable to get the OF node
nouveau [ VBIOS][0000:01:00.0] ... signature not found
nouveau [ VBIOS][0000:01:00.0] checking PRAMIN for image...
nouveau_bios_shadow_pramin(94)
addr0=1
nouveau [ VBIOS][0000:01:00.0] ... signature not found
nouveau [ VBIOS][0000:01:00.0] checking PROM for image...
nouveau [ VBIOS][0000:01:00.0] ... appears to be valid
nouveau [ VBIOS][0000:01:00.0] using image from PROM
nouveau [ VBIOS][0000:01:00.0] BIT signature found
nouveau [ VBIOS][0000:01:00.0] version 75.19.55.00.02
nouveau [ DEVINIT][0000:01:00.0] adaptor not initialised
nouveau [ VBIOS][0000:01:00.0] running init tables
nouveau [ PMC][0000:01:00.0] MSI interrupts enabled
nouveau W[ PFB][0000:01:00.0][0x00000000][c0000001fe53c000] reclocking of
this ram type unsupported
nouveau [ PFB][0000:01:00.0] RAM type: DDR3
nouveau [ PFB][0000:01:00.0] RAM size: 1024 MiB
nouveau [ PFB][0000:01:00.0] ZCOMP: 0 tags
nouveau [ VOLT][0000:01:00.0] GPU voltage: 900000uv
nouveau [ PTHERM][0000:01:00.0] FAN control: PWM
nouveau [ PTHERM][0000:01:00.0] fan management: automatic
nouveau [ PTHERM][0000:01:00.0] internal sensor: yes
nouveau [ CLK][0000:01:00.0] 07: core 270 MHz memory 405 MHz
nouveau [ CLK][0000:01:00.0] 0f: core 810 MHz memory 500 MHz
nouveau [ CLK][0000:01:00.0] --: core 270 MHz memory 405 MHz
result of operation:
addr = nv_rd32(bios, 0x619f04);
for x86: addr=3ffe09
for ppc: addr0=1
Why do the results of reading operation differ from each other?