dan@ece.arizona.edu (Dan Filiberti) (03/27/91)
We have a RasterOps SparcCard in our Sparcstation 1+ (24-bit fb)...At one time we were able to get X running using the cg8 server on the net...but then we installed the update to the RasterOps driver and it busted X..X is there, but the screen is black... After many attempts to get info, we were told the following... ------- Dan, I am assuming you have source for the server. If you do what you need to do is make an ioctl call (PIPIO_G_FB_INFO) to obtain the memory map offset for the various frame buffers on the card. This call is described in the file /usr/include/sun/pipio.h. The values returned are described in that file also. Rather than using the hardwired offset for the true color buffer (40000 hex, I e lieve) use the value returned in the mmap_offset field for the entry whose group fieldi s the value PIXPG_24BIT_COLOR (which is defined in /usr/include/pixrect/pr_plane groups.h). ------- Can anyone help me decipher this...where exactly do I put the calls in the cg8 server? All help greatly appreciated.[:)} Daniel Filiberti dan@helios.ece.arizona.edu
andy@research.canon.oz.au (Andy Newman) (03/27/91)
I had exactly this trouble. In the later release of the RasterOps card
the memory mapping (mmap) of the framebuffer has changed. There is now
an approximately 1Mb space between the monochrome fb and the colour fb.
The new CG8C strucuture for sunCG8C.c looks like this:
#define CG8_HEIGHT 900
#define CG8_WIDTH 1152
typedef struct cg8c {
u_char mpixel[128*1024]; /* bit-per-pixel memory */
u_char epixel[128*1024]; /* enable plane */
/* VVVVVVVVVVVVVVVVVVVVV */
u_char padding[1016*1024]; /* space in RasterOps board */
/* ^^^^^^^^^^^^^^^^^^^^^ */
u_long cpixel[CG8_HEIGHT][CG8_WIDTH]; /* word-per-pixel memory */
} CG8C, CG8CRec, *CG8CPtr;
I had to experiment a bit to find the correct values due to the
"fantastic" documentation supplied by RasterOps (at least in Oz).
Hope this helps.
--
Andy Newman (andy@research.canon.oz.au) Canon Info. Systems Research Australia
"X: 2. An over-sized, over-featured, over-engineered window system developed
at MIT and widely used on UNIX systems." from the jargon file.christos@theory.tn.cornell.edu (Christos S. Zoulas) (03/27/91)
In article <1991Mar26.223513.5306@research.canon.oz.au> andy@research.canon.oz.au (Andy Newman) writes: > >I had exactly this trouble. In the later release of the RasterOps card >the memory mapping (mmap) of the framebuffer has changed. There is now >an approximately 1Mb space between the monochrome fb and the colour fb. [stuff deleted] > And in addition, if you want to enable the double frame buffer sun hack you can apply the following patch.... [I added the sunCG9.c patch too] *** sunInit.c.dist Tue Mar 19 14:48:42 1991 --- sunInit.c Thu Mar 21 14:50:26 1991 *************** *** 639,645 **** } else if (name) { fd = open(name, O_RDWR, 0); if (fd < 0) { ! return (-1); } if (ioctl(fd, FBIOGATTR, &fbattr) < 0) { --- 639,652 ---- } else if (name) { fd = open(name, O_RDWR, 0); if (fd < 0) { ! /* ! * The rasterops cgeight0 has a bwtwo0 but does not ! * advertize it. ! */ ! if (strcmp(name, "/dev/bwtwo0") == 0) ! fd = open("/dev/cgeight0", O_RDWR, 0); ! if (fd < 0) ! return (-1); } if (ioctl(fd, FBIOGATTR, &fbattr) < 0) { *** sunCG9C.c.old Tue Mar 19 14:48:40 1991 --- sunCG9C.c Tue Mar 19 15:30:16 1991 *************** *** 58,70 **** */ #define CG9_HEIGHT 900 #define CG9_WIDTH 1152 - - typedef struct cg9c { - u_char mpixel[128*1024]; /* bit-per-pixel memory */ - u_char epixel[128*1024]; /* enable plane */ - u_long cpixel[CG9_HEIGHT][CG9_WIDTH]; /* word-per-pixel memory */ - } CG9C, CG9CRec, *CG9CPtr; - #define CG9C_IMAGE(fb) ((caddr_t)(&(fb)->cpixel)) #define CG9C_IMAGEOFF ((off_t)0x0) #define CG9C_IMAGELEN (((4*CG9_HEIGHT*CG9_WIDTH + 8191)/8192)*8192) --- 58,63 ---- *************** *** 72,78 **** --- 65,88 ---- #define CG9C_MONOLEN (128*1024) #define CG9C_ENABLE(fb) ((caddr_t)(&(fb)->epixel)) #define CG9C_ENBLEN CG9C_MONOLEN + #ifdef PIP_NFBS + /* RasterOps card */ + # define CG8C_PADLEN (CG9C_MONOLEN * 7 + 240 * 512) + #else + /* True cg8 */ + # define CG8C_PADLEN 0 + #endif + typedef struct cg9c { + u_char mpixel[128*1024]; /* bit-per-pixel memory */ + u_char epixel[128*1024]; /* enable plane */ + #ifdef PIP_NFBS + u_char ppixel[CG8C_PADLEN]; /* padding plane */ + #endif + u_long cpixel[CG9_HEIGHT][CG9_WIDTH]; /* word-per-pixel memory */ + } CG9C, CG9CRec, *CG9CPtr; + + static CG9CPtr CG9Cfb = NULL; static int sunCG9CScreenIndex; *************** *** 427,433 **** #ifdef _MAP_NEW if ((int)(CG9Cfb = (CG9CPtr) mmap((caddr_t) 0, ! CG9C_MONOLEN + CG9C_ENBLEN + CG9C_IMAGELEN, PROT_READ | PROT_WRITE, MAP_SHARED | _MAP_NEW, fd, 0)) == -1) { Error("Mapping cg8c"); --- 437,443 ---- #ifdef _MAP_NEW if ((int)(CG9Cfb = (CG9CPtr) mmap((caddr_t) 0, ! CG9C_MONOLEN + CG9C_ENBLEN + CG8C_PADLEN + CG9C_IMAGELEN, PROT_READ | PROT_WRITE, MAP_SHARED | _MAP_NEW, fd, 0)) == -1) { Error("Mapping cg8c"); -- +------------------------------------------------------------------------+ | Christos Zoulas | 389 Theory Center, Electrical Engineering, | | christos@ee.cornell.edu | Cornell University, Ithaca NY 14853. | | christos@crnlee.bitnet | Phone: (607) 255 0302 | Fax: (607) 254 4565 |