Re: strange character display in XFree86 4.4.0 on Linux/MIPS
On Tue, 27 Jul 2004, Youlin Feng wrote: Hello, I am trying to run the XFree86 4.4.0 on Linux 2.4.21 on an embedded MIPS platform. Having overcome problems with USB keyboard/mouse and mmap() of /dev/mem of PCI space, etc., I am able to run the X server via the ATI Rage XL card. X clients with no characters are fine, such as xlogo, xbiff, etc. Here is the problem, in XTERM, characters displayed are hardly recognizable. But anything typed in, such as commands, are ok. For example, echo 1 command is ok, but the output 1 is distorted. And in XCALC, each character is very clear but the combination is wrong, e.g. INV was displayed as IVN, sin becomes sni, log becomes lgo, etc. Now due to HW platform issue, the big-endian based OS/SW must do byte-swapping to do PIO access to the PCI space inclusing the ATI card. HW handles the byte-swapping for the DMA. I programmed the byte-swapping for the ATI card MMIO aperture and the linear aperture. But the probem persists. I am new to the Xfree86 and would really appreciate it if you can give me some hint on what could be wrong. The driver should be handling endianness correctly, without changes, assuming that compiler.h is correct for this platform. Marc. +--+---+ | Marc Aurele La France | work: 1-780-492-9310 | | Computing and Network Services | fax:1-780-492-1729 | | 352 General Services Building | email: [EMAIL PROTECTED] | | University of Alberta +---+ | Edmonton, Alberta | | | T6G 2H1 | Standard disclaimers apply| | CANADA | | +--+---+ XFree86 developer and VP. ATI driver and X server internals. ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
RE: strange character display in XFree86 4.4.0 on Linux/MIPS
Thank you for your reply. The original compiler.h doesn't do byte-swapping for MIPS platforms, assuming that the HW would handle it. So I added byte-swapping to MMIO_INxx, MMIO_OUTxx, MMIO_MOVE32 for the MIPS. BTW, if I used the fbdev driver instead of ati, the problem is gone. Youlin Feng -Original Message- From: Marc Aurele La France [mailto:[EMAIL PROTECTED] Sent: Thursday, July 29, 2004 7:28 AM To: Youlin Feng Cc: '[EMAIL PROTECTED]' Subject: Re: strange character display in XFree86 4.4.0 on Linux/MIPS On Tue, 27 Jul 2004, Youlin Feng wrote: Hello, I am trying to run the XFree86 4.4.0 on Linux 2.4.21 on an embedded MIPS platform. Having overcome problems with USB keyboard/mouse and mmap() of /dev/mem of PCI space, etc., I am able to run the X server via the ATI Rage XL card. X clients with no characters are fine, such as xlogo, xbiff, etc. Here is the problem, in XTERM, characters displayed are hardly recognizable. But anything typed in, such as commands, are ok. For example, echo 1 command is ok, but the output 1 is distorted. And in XCALC, each character is very clear but the combination is wrong, e.g. INV was displayed as IVN, sin becomes sni, log becomes lgo, etc. Now due to HW platform issue, the big-endian based OS/SW must do byte-swapping to do PIO access to the PCI space inclusing the ATI card. HW handles the byte-swapping for the DMA. I programmed the byte-swapping for the ATI card MMIO aperture and the linear aperture. But the probem persists. I am new to the Xfree86 and would really appreciate it if you can give me some hint on what could be wrong. The driver should be handling endianness correctly, without changes, assuming that compiler.h is correct for this platform. Marc. +--+-- -+ | Marc Aurele La France | work: 1-780-492-9310 | | Computing and Network Services | fax:1-780-492-1729 | | 352 General Services Building | email: [EMAIL PROTECTED] | | University of Alberta +---+ | Edmonton, Alberta | | | T6G 2H1 | Standard disclaimers apply| | CANADA | | +--+-- -+ XFree86 developer and VP. ATI driver and X server internals. ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
strange character display in XFree86 4.4.0 on Linux/MIPS
Hello, I am trying to run the XFree86 4.4.0 on Linux 2.4.21 on an embedded MIPS platform. Having overcome problems with USB keyboard/mouse and mmap() of /dev/mem of PCI space, etc., I am able to run the X server via the ATI Rage XL card. X clients with no characters are fine, such as xlogo, xbiff, etc. Here is the problem, in XTERM, characters displayed are hardly recognizable. But anything typed in, such as commands, are ok. For example, echo 1 command is ok, but the output 1 is distorted. And in XCALC, each character is very clear but the combination is wrong, e.g. INV was displayed as IVN, sin becomes sni, log becomes lgo, etc. Now due to HW platform issue, the big-endian based OS/SW must do byte-swapping to do PIO access to the PCI space inclusing the ATI card. HW handles the byte-swapping for the DMA. I programmed the byte-swapping for the ATI card MMIO aperture and the linear aperture. But the probem persists. I am new to the Xfree86 and would really appreciate it if you can give me some hint on what could be wrong. Thank you very much. Youlin Feng ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
