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Onion: /* Patch/Kernel */

2010-10-08T06:59:48Z

‎Patch/Kernel

Dmvo: /* Locations */

2008-12-16T17:51:07Z

‎Locations

Dmvo: /* Locations */

2008-12-15T11:59:22Z

‎Locations

Onion: Add a link to experimental kernels with XZ "support"

2005-08-18T06:38:07Z

Add a link to experimental kernels with XZ "support"

Onion: Fixes

2005-02-14T22:52:06Z

Fixes

Show changes

Onion: Add some ZX information

2005-02-09T21:36:44Z

Add some ZX information

New page

Thanks to NetBSDs GR2 driver we have out that [[HQ2.1]] is a kind of successor of the [[HQ2]] found in the Indigo([[IP12]]), and at least partialy compatible. Version information can be read in the same way and tests have shown that drawing colored rectangles work just like on GR2.

==Current headers==
Current development extreme.h looks like this:

typedef volatile unsigned int exreg_t;

struct hq2 {
exreg_t attrjmp[16];
exreg_t version;
exreg_t numge;
exreg_t fin1;
exreg_t fin2;
exreg_t dmasync;
exreg_t fifo_full_timeout;
exreg_t fifo_empty_timeout;
exreg_t fifo_full;
exreg_t fifo_empty;
exreg_t ge_loaducode;
exreg_t gedma;
exreg_t hq_gepc;
exreg_t gepc;
exreg_t intr;
exreg_t unstall;
exreg_t mystery;
exreg_t refresh;
volatile unsigned char pad[3964];
exreg_t fin3;

};

struct ge {
volatile unsigned int ram0[256];
};

struct clock {
volatile unsigned char write;
unsigned char pad0[31];
};

struct vc1 {
volatile unsigned short cmd0;
unsigned char pad0[2];
volatile unsigned char xmapmode;
unsigned char pad1[3];
volatile unsigned short sram;
unsigned char pad2[2];
volatile unsigned char testreg;
unsigned char pad3[3];
volatile unsigned char addrlo;
unsigned char pad4[3];
volatile unsigned char addrhi;
unsigned char pad5[3];
volatile unsigned char sysctl;
unsigned char pad6[7];
};

struct bdversion {
volatile unsigned char rd0;
unsigned char pad0[3];
volatile unsigned char rd1;
unsigned char pad1[3];
volatile unsigned char rd2;
unsigned char pad2[3];
volatile unsigned char rd3;
unsigned char pad3[19];
};

struct extreme_regs {
volatile unsigned int shram[32768];
unsigned char padding[131072];
volatile unsigned int fifo[32768];
volatile unsigned int ucode[8192];
struct ge ge[8];
struct hq2 hq;
unsigned char pad0[4092];
struct bdversion bdversion;
struct clock clock;
struct vc1 vc1;

};

#define HQ2_FIN1 0x04;
#define HQ2_FIN2 0x02;
#define HQ2_FIN3 0x01;

#define HQ2_FAST_SHRAM_CNT 0x10;

#define HQ2_FIFO_MAX 63;
#define HQ2_FIFO_HI 40;
#define HQ2_FIFO_LO 35;

#define GR2_FIFO_INIT 0x644/4
#define GR2_FIFO_COLOR 0x648/4
#define GR2_FIFO_FINISH 0x64c/4
#define GR2_FIFO_PNT2I 0x650/4
#define GR2_FIFO_RECTI2D 0x654/4
#define GR2_FIFO_CMOV2I 0x658/4
#define GR2_FIFO_LINE2I 0x65c/4
#define GR2_FIFO_DRAWCHAR 0x660/4
#define GR2_FIFO_RECTCOPY 0x664/4
#define GR2_FIFO_DATA 0x77c/4

#define HQ2_VERSION_MASK 0xff000000
#define HQ2_VERSION_SHIFT 23

#define GE7_REVISION_MASK 0xf0

#define GR2_REVISION_RD1_BACKEND_REV 0x03
#define GR2_REVISION_RD1_ZBUFFER 0x0c

#define GR2_REVISION_RD0_VERSION_MASK 0x0f
#define GR2_REVISION4_RD0_MONITOR_MASK 0xf0

#define GR2_REVISION_RD2_BACKEND_REV 0x000c

#define GR_PHYS_BASE1 0x1f000000
#define GR_PHYS_BASE2 0x1f400000
#define GR_PHYS_BASE3 0x1f600000

==Operations==
Currently know operations that work are the following:

===Reading version===

rev0=ex_regs->bdversion.rd0 & GR2_REVISION_RD0_VERSION_MASK;
rev1=ex_regs->bdversion.rd1 & 0x03;
hqv=(ex_regs->hq.version & HQ2_VERSION_MASK) >> HQ2_VERSION_SHIFT;

===Setting color===

You probably need to set the color to draw with before doing any actual drawing.

ex_regs->fifo[GR2_FIFO_COLOR]=color;

===Drawing a rectangle===

First you must set the color and then:

ex_regs->fifo[GR2_FIFO_RECTI2D]=x1;
ex_regs->fifo[GR2_FIFO_DATA]=y1;
ex_regs->fifo[GR2_FIFO_DATA]=x2;
ex_regs->fifo[GR2_FIFO_DATA]=y2;

NetBSD GR2 drivers says that 0,0 is lower left corner.

===Other===
Other operations will be added when we figure them out.

← Older revision		Revision as of 06:59, 8 October 2010
Line 101:		Line 101:

	No patches just yet. Kernel with sort-of-maybe-working-console can be found from time to time at [http://home.tal.org/~milang/o2/kernels/ onion's kernels page.]		No patches just yet. Kernel with sort-of-maybe-working-console can be found from time to time at [http://home.tal.org/~milang/o2/kernels/ onion's kernels page.]
		+
		+	[[Category:SGI]]

@@ Line 10: / Line 10: @@
 * 0x1f400000
 * 0x1f600000
 =Commands=

@@ Line 10: / Line 10: @@
 * 0x1f400000
 * 0x1f600000
 =Commands=

@@ Line 4: / Line 4: @@
 * Copying rectangles "work" but the board gets stuck
-==Locations==
+=Locations=
 * 0x1f000000
 * 0x1f400000
 * 0x1f600000
-==Commands==
+=Commands=
 Known commands locations into the engine FIFO are:
@@ Line 31: / Line 33: @@
   DATA=paramX
-==Operations==
+=Operations=
 Currently know operations that work are the following:
-===Reading version===
+==Reading version==
   rev0=ex_regs->bdversion.rd0 & GR2_REVISION_RD0_VERSION_MASK;
@@ Line 40: / Line 42: @@
   hqv=(ex_regs->hq.version & HQ2_VERSION_MASK) >> HQ2_VERSION_SHIFT;
-===Setting color===
+==Setting color==
 All drawing operations need a color that it should use:
@@ Line 46: / Line 48: @@
   [GR2_FIFO_COLOR]=color;
-===Drawing a rectangle===
+=== Palette ===
 First you must set the color and then:
@@ Line 57: / Line 62: @@
 Y needs to be flipped as 0,0 is lower left corner.
-===Character draw===
+==Character drawing==
 Set color, then:
@@ Line 86: / Line 91: @@
 Be sure to padd up to 18, probably the max font height.
-===Moving blocks===
+==Moving blocks==
 This is giving a headache right now as all of the above seems to work just fine.
-===Other===
+==Other==
 Other operations will be added when we figure them out.