Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S272804AbTGaHXy (ORCPT ); Thu, 31 Jul 2003 03:23:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S272813AbTGaHXy (ORCPT ); Thu, 31 Jul 2003 03:23:54 -0400 Received: from lindsey.linux-systeme.com ([80.190.48.67]:16656 "EHLO mx00.linux-systeme.com") by vger.kernel.org with ESMTP id S272804AbTGaHXv (ORCPT ); Thu, 31 Jul 2003 03:23:51 -0400 From: Marc-Christian Petersen Organization: Working Overloaded Linux Kernel To: Marc Heckmann , linux-kernel@vger.kernel.org, Marcelo Tosatti Subject: Re: UP IO-APIC fix in 2.4.22-pre? Date: Thu, 31 Jul 2003 09:08:27 +0200 User-Agent: KMail/1.5.2 References: <20030731002847.GA3549@nadir.org> In-Reply-To: <20030731002847.GA3549@nadir.org> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200307310821.27648.m.c.p@wolk-project.de> X-PRIORITY: 2 (High) Content-Type: Multipart/Mixed; boundary="Boundary-00=_rBMK/BrgcqgJPfe" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2723 Lines: 92 --Boundary-00=_rBMK/BrgcqgJPfe Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline On Thursday 31 July 2003 02:28, Marc Heckmann wrote: Hi Marc, > I was just wondering about the bugfix for UP IO-APIC that is in 2.4-ac > and that went into 2.5: > http://linux.bkbits.net:8080/linux-2.5/cset@1.1455.1.9 > Will it make it into 2.4.22? From what I understand this fixes the > following problem that many of us are seeing: > hda: dma_timer_expiry: dma status == 0x24 > hda: lost interrupt > hda: dma_intr: bad DMA status (dma_stat=30) > hda: dma_intr: status=0x50 { DriveReady SeekComplete } I sent it to Marcelo yesterday. In the meantime you might want to try out the attached patch ontop of 2.4.22-pre9 and see if it fixes the problems for you. ciao, Marc --Boundary-00=_rBMK/BrgcqgJPfe Content-Type: text/x-diff; charset="iso-8859-1"; name="IO-APIC-edge-IRQs-on-UP-fix.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="IO-APIC-edge-IRQs-on-UP-fix.patch" --- a/arch/i386/kernel/io_apic.c 2003-07-30 11:18:50.000000000 +0200 +++ b/arch/i386/kernel/io_apic.c 2003-07-31 01:40:36.000000000 +0200 @@ -1343,6 +1343,25 @@ static void clear_IO_APIC (void) static void mask_and_ack_level_ioapic_irq (unsigned int irq) { /* nothing */ } +#ifndef CONFIG_SMP + +void send_IPI_self(int vector) +{ + unsigned int cfg; + + /* + * Wait for idle. + */ + apic_wait_icr_idle(); + cfg = APIC_DM_FIXED | APIC_DEST_SELF | vector | APIC_DEST_LOGICAL; + /* + * Send the IPI. The write to APIC_ICR fires this off. + */ + apic_write_around(APIC_ICR, cfg); +} + +#endif /* CONFIG_SMP */ + static void set_ioapic_affinity (unsigned int irq, unsigned long mask) { unsigned long flags; --- a/include/asm-i386/hw_irq.h 2003-07-17 13:42:13.000000000 +0100 +++ b/include/asm-i386/hw_irq.h 2003-07-17 15:49:58.000000000 +0100 @@ -13,8 +13,10 @@ */ #include +#include #include #include +#include /* * IDT vectors usable for external interrupt sources start @@ -213,7 +215,7 @@ atomic_inc((atomic_t *)&prof_buffer[eip]); } -#ifdef CONFIG_SMP /*more of this file should probably be ifdefed SMP */ +#if defined(CONFIG_X86_IO_APIC) static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) { if (IO_APIC_IRQ(i)) send_IPI_self(IO_APIC_VECTOR(i)); --Boundary-00=_rBMK/BrgcqgJPfe-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/