XFree86 4.1.0 and CyberstormPPC

[Giorgio T. <de...@ip...>]

Hello all,

as i said time ago i had problems with XFree86 some still remain
but one i think i have solved:
I had a problem of bad addressing during Xdm (Kdm-Gdm) loading
that trashed all the graphics with these symptoms: background sometimes
trashed, graphics and widgets in the greetings window become invisible
but selectable.
Note that these problems was found also before the CyberstormPPC
firmware upgrading.
After firmware upgrading i have seen that there was some differences between
the PCI addressing declaration in apus_pci.c & pm2fb.c files and what the new
ROM firmware reported.
I attack my dmesg file where is possible to see this adresses difference
and some (i think) non-influent Zorro vs. PCI address space conflicts.

I have tried the modifies below and now seems that this problem is solved:

diff -urN orig/apus_pci.c modif/apus_pci.c
--- orig/apus_pci.c	Sun Oct 28 12:44:01 2001
+++ modif/apus_pci.c	Sun Sep  1 11:46:07 2002
@@ -167,7 +167,9 @@
 	DEFW();
 	writel(CVPPC_FB_APERTURE_ONE, apus_hose->cfg_data + PCI_BASE_ADDRESS_1);
 	DEFW();
-	writel(CVPPC_FB_APERTURE_TWO, apus_hose->cfg_data + PCI_BASE_ADDRESS_2);
+	writel(0xe0800000, apus_hose->cfg_data + PCI_BASE_ADDRESS_2);
+	DEFW();
+	writel(CVPPC_FB_APERTURE_TWO, apus_hose->cfg_data + PCI_BASE_ADDRESS_3);
 	DEFW();
 	writel(CVPPC_ROM_ADDRESS, apus_hose->cfg_data + PCI_ROM_ADDRESS);
 	DEFW();
diff -urN orig/pm2fb.c modif/pm2fb.c
--- orig/pm2fb.c	Tue Aug 20 14:47:29 2002
+++ modif/pm2fb.c	Sun Sep  1 11:47:22 2002
@@ -998,7 +998,8 @@
 		WR32(p->pci_config, PCI_CACHE_LINE_SIZE, 0xff00);
 	WR32(p->pci_config, PCI_BASE_ADDRESS_0, CVPPC_REGS_REGION);
 	WR32(p->pci_config, PCI_BASE_ADDRESS_1, CVPPC_FB_APERTURE_ONE);
-	WR32(p->pci_config, PCI_BASE_ADDRESS_2, CVPPC_FB_APERTURE_TWO);
+	WR32(p->pci_config, PCI_BASE_ADDRESS_2, 0xe0800000);
+	WR32(p->pci_config, PCI_BASE_ADDRESS_3, CVPPC_FB_APERTURE_TWO);
 	WR32(p->pci_config, PCI_ROM_ADDRESS, CVPPC_ROM_ADDRESS);
 	DEFW();
 	WR32(p->pci_config, PCI_COMMAND, 0xef000000 |

I wish to submit these modifies if you think they have "a sense" .

Remaining problems:

Note also that the vterminal exchange problem is still present as i wrote 
time ago. 
The warbled text problem i signaled succedes only in the X text windows as
Xterm or Mozilla and so on. I think this is a driver's limitation because 
with 1024x768x16 resolution this succedes only when the machine is very 
stressed but with 1152x864x16 and over this succedes everytime i open a 
window. With these high resolutions it warbles also the graphics.

Every suggestion is welcome.

Regards,

	Giorgio Terzi