Date: Mon, 14 Jan 2013 15:02:58 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hardware@freebsd.org Subject: Re: ppc fails to attach to puc on 9.1-STABLE, 7.4-STABLE works Message-ID: <201301141502.58550.jhb@freebsd.org> In-Reply-To: <20130110074052.GA8922@bali> References: <20130110074052.GA8922@bali>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday, January 10, 2013 2:40:52 am Andre Albsmeier wrote: > [Retrying here, maybe anyone can help...} > > I want my printer port back on 9.1 ;-( > > I have this card: > > puc0@pci0:4:1:0: class=0x078000 card=0x00121000 chip=0x98359710 rev=0x01 hdr=0x00 > vendor = 'NetMos Technology' > device = 'PCI 9835 Multi-I/O Controller' > class = simple comms > > It attached and worked under 7.4-STABLE (as long as I disabled > the interrupt using hint.ppc.0.irq=""): > > puc0: <NetMos NM9835 Dual UART and 1284 Printer port> port 0xdf00-0xdf07,0xde00-0xde07,0xdd00-0xdd07 > ,0xdc00-0xdc07,0xdb00-0xdb07,0xda00-0xda0f irq 17 at device 1.0 on pci4 > puc0: [FILTER] > uart0: <Non-standard ns8250 class UART with FIFOs> on puc0 > uart0: [FILTER] > uart1: <Non-standard ns8250 class UART with FIFOs> on puc0 > uart1: [FILTER] > ppc0: <Parallel port> on puc0 > ppc0: Generic chipset (ECP/EPP/PS2/NIBBLE) in ECP+EPP mode (EPP 1.9) > ppbus0: <Parallel port bus> on ppc0 > lpt0: <Printer> on ppbus0 > lpt0: Polled port > > > Under 9.1 the card does not attach the ppc anymore. The hint entries > > hint.ppc.0.at=puc0 > hint.ppc.0.irq="" > hint.ppc.0.flags=0x2F > > get ignored and so it probes as ppc1 (failing due to the interrupt > problem as it was in 7.4 without hints): > > puc0: <NetMos NM9835 Dual UART and 1284 Printer port> port 0xdf00-0xdf07,0xde00-0xde07,0xdd00-0xdd07 > ,0xdc00-0xdc07,0xdb00-0xdb07,0xda00-0xda0f irq 17 at device 1.0 on pci4 > uart2: <Non-standard ns8250 class UART with FIFOs> at port 1 on puc0 > uart3: <16550 or compatible> at port 2 on puc0 > ppc1: <Parallel port> at port 3 on puc0 > ppc1: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode > ppc1: failed to register interrupt handler: 6 > device_attach: ppc1 attach returned 6 > > Any ideas? How do I construct the hint entries under 9.1 so that > > 1. it does not want to use the interrupt (which made it attach under 7.4) > 2. it takes the flags 0x2F as it did before. > > I have also never understood if ppc itself needs to attach to > the irq as well (I thought this all would be handled by puc). Well, ppc wants to use puc's interrupt, and it should be finding puc's interrupt. Ah, I think I found the bug. Try this patch to sys/dev/puc/puc.c: Index: puc.c =================================================================== --- puc.c (revision 245225) +++ puc.c (working copy) @@ -622,7 +628,7 @@ puc_bus_setup_intr(device_t dev, device_t child, s if (cookiep == NULL || res != port->p_ires) return (EINVAL); /* We demand that serdev devices use filter_only interrupts. */ - if (ihand != NULL) + if (port->p_type == PUC_TYPE_SERIAL && ihand != NULL) return (ENXIO); if (rman_get_device(port->p_ires) != originator) return (ENXIO); This should let your ppc device re-use IRQ 17 from your puc device. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201301141502.58550.jhb>