From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 14 May 2003 12:09:05 -0400 Message-Id: <200305141209.AA2923954376@intrex.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii From: "Ralph Blach" Reply-To: To: Eugene Surovegin , , Xupei Liang Subject: Re: IDE driver support in PPC440 Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: I am using the MontaVista 2.1 port and the Promise IDE works perfectly. I just plugged it in and it just ran. Chip ---------- Original Message ---------------------------------- From: Xupei Liang Date: Wed, 14 May 2003 08:20:11 -0700 (PDT) > >Hi, Eugene, > >The IRQ7 is setup as level trigger and active low. > >I think what happened is that when the ISR is >serving the first interrupt, which is external >interrupt 7 (number 50), it is interrupted again. >This time, ppc405_pic_get_irq() returns irq 64 because >the routine knows that all interrupts have been >disabled (I have looked at UIC_ER0 and UIC_ER1 >and verified that is the case). So the question is, >if all interrupts are disabled, why the code is stuck >inside the ISR? > >I am using the lastest 2.4.19 code. > >Thank you for your help again. > >Regards, > >Terry L. > > >--- Eugene Surovegin wrote: >> >> At 10:15 PM 5/13/2003, Xupei Liang wrote: >> >> >> >I am working on a PPC440 board that supports >> >a PCI-IDE device, and I am experiencing an >> >interrupt handling problem. >> > >> >The PCI-IDE controller uses External Interrupt 7 >> and >> >the controller interrupt line is wired to the >> >processor directly. When the IDE device is >> >being initialized, I can see that the interrupt >> >goes off. But the code is stuck in the >> >ISR and can not get out. Here are the screen >> >debug messages: >> > >> > >> >ide1: CMD649 Bus-Master DMA disabled (BIOS) >> >disabling irq 50 defensively >> >ppc405_uic_disable - irq 50 word 1 bit 0x12 >> >hda: SanDisk SDCFB-128, ATA DISK drive >> >ppc405_uic_enable - irq 50 word 1 bit 0x12 >> >ppc405_uic_enable - irq 50 word 1 bit 0x12 >> >ide0 at 0x2000-0x2007,0x3002 on irq 50 >> >hda: 250880 sectors (128 MB) w/1KiB Cache, >> >CHS=980/8/32 >> >Partition check: >> > hda:ppc405_pic_get_irq - irq 50 bit 0x2000 >> >ppc405_uic_disable_and_ack - irq 50 word 1 bit 0x12 >> >ppc405_pic_get_irq - irq 64 bit 0x0 >> >ppc405_pic_get_irq - irq 64 bit 0x0 >> >------------- >> >> Well, "irq 64" bothers me. >> You shouldn't see this message. Real external >> interrupts are in the range 0-63 >> >> Please, check that you are using latest code from >> 2.4 devel tree >> (in particular file arch/ppc/kernel/ppc4xx_pic.c) >> >> BTW, how did you setup trigger and polarity settings >> for IRQ7 ? >> >> Eugene. >> >> >> > > > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/