i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

added some comments about the NV18 speedfix and resetting registers on NV28.

Browse Source 
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13424 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2005-07-04 15:17:07 +00:00
parent 4fa9fc3439
commit 845faf5e8d
1 changed files with 11 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/add-ons/accelerants/nvidia/engine/nv_acc_dma.c
+11
View File
@@ -127,6 +127,17 @@ status_t nv_acc_init_dma()
NV_REG32(NV32_PWRUPCTRL) = 0x13111111;
/* don't try this on NV20 and later.. */
/* note:
* the specific register that's responsible for the speedfix on NV18 is
* $00400ed8: bit 6 needs to be zero for fastest rendering (confirmed). */
/* note also:
* on NV28 the following ranges could be reset (confirmed):
* $00400000 upto/incl. $004002fc;
* $00400400 upto/incl. $004017fc;
* $0040180c upto/incl. $00401948;
* $00401994 upto/incl. $00401a80;
* $00401a94 upto/incl. $00401ffc.
* The intermediate ranges hang the engine upon resetting. */
if (si->ps.card_arch < NV20A)
{
/* actively reset the PGRAPH registerset (acceleration engine) */