finalized acc related stuff, did some tidbits, fixed cursor.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7093 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/accelerants/neomagic/GetAccelerantHook.c

@@ -219,15 +219,6 @@ status_t check_acc_capability(uint32 feature)
 	 * memory pitch.. */
 	if (si->acc_mode)
 	{
-		/* see if we support hardware rectangle fills in the current mode:
-		 * the Matrox card's acc engine can adress upto 16Mbyte memory for this cmd! */
-		if (fill &&
-			((si->fbc.bytes_per_row * si->dm.virtual_height) > (16 * 1024 * 1024)))
-		{
-			LOG(4, ("Acc: Not exporting hook %s.\n", msg));
-			return B_ERROR;
-		}
-
 		LOG(4, ("Acc: Exporting hook %s.\n", msg));
 		return B_OK;
 	}

src/add-ons/accelerants/neomagic/ProposeDisplayMode.c

@@ -3,7 +3,7 @@
 	This file may be used under the terms of the Be Sample Code License.
 
 	Other authors for nm driver:
-	Rudolf Cornelissen 4/2003-1/2004
+	Rudolf Cornelissen 4/2003-3/2004
 */
 
 #define MODULE_BIT 0x00400000
@@ -137,6 +137,13 @@ status_t PROPOSE_DISPLAY_MODE(display_mode *target, const display_mode *low, con
 	}	
 	#endif
 
+	/* NM2070 cannot do 24 bit color */
+	if ((si->ps.card_type == NM2070) && (target->space == B_RGB24_LITTLE))
+	{
+		LOG(4, ("PROPOSEMODE: 24bit color not supported on NM2070, aborted.\n"));
+		return B_ERROR;
+	}
+
 	/*find a nearby valid timing from that given*/
 	result = nm_crtc_validate_timing
 	(

src/add-ons/accelerants/neomagic/engine/nm_crtc.c

@@ -1,6 +1,6 @@
 /* CTRC functionality */
 /* Author:
-   Rudolf Cornelissen 4/2003-1/2004
+   Rudolf Cornelissen 4/2003-3/2004
 */
 
 #define MODULE_BIT 0x00040000
@@ -602,11 +602,16 @@ status_t nm_crtc_cursor_init()
 		CR1W(22CURFGCOLOR, 0x00ffffff);
 	}
 
-	/*clear cursor*/
+	/* we must set a valid colordepth to get full RAM access on Neomagic cards:
-	fb = (uint32 *) si->framebuffer + curadd;
+	 * in old pre 8-bit color VGA modes some planemask is in effect apparantly,
-	for (i=0;i<(1024/4);i++)
+	 * allowing access only to every 7th and 8th RAM byte across the entire RAM. */
+	nm_crtc_depth(BPP8);
+
+	/* clear cursor: so we need full RAM access! */
+	fb = ((uint32 *)(((uint32)si->framebuffer) + curadd));
+	for (i = 0; i < (1024/4); i++)
 	{
-		fb[i]=0;
+		fb[i] = 0;
 	}
 
 	/* activate hardware cursor */

src/add-ons/accelerants/neomagic/engine/nm_general.c

@@ -47,7 +47,7 @@ status_t nm_general_powerup()
 {
 	status_t status;
 
-	LOG(1,("POWERUP: Neomagic (open)BeOS Accelerant 0.06-4 running.\n"));
+	LOG(1,("POWERUP: Neomagic (open)BeOS Accelerant 0.06-5 running.\n"));
 
 	/* detect card type and power it up */
 	switch(CFGR(DEVID))
@@ -351,6 +351,10 @@ status_t nm_general_bios_to_powergraphics()
 	/* enable memory above 256Kb: set b4 (disables adress wraparound at 256Kb boundary) */
 	ISAGRPHW(FBSTADDE, 0x10);
 
+	/* this speeds up RAM writes according to XFree driver */
+//	fixme: don't touch until more is known: part of RAM or CORE PLL???
+//	ISAGRPHW(SPEED, 0xc0);
+
 	/* turn on display */
 	nm_crtc_dpms(true, true, true);