From mboxrd@z Thu Jan 1 00:00:00 1970 From: Randolph Chung Subject: Re: [parisc-linux] Re: 2.6.4-rc1-pa3 siimage/NS87415 IDE progess (and another mystery)! Date: Sun, 11 Jul 2004 16:34:39 -0700 Message-ID: <20040711233439.GX546@tausq.org> References: <20040309063629.GM1113@tausq.org> <20040309072917.GN1113@tausq.org> <20040711221829.GA27835@colo.lackof.org> <20040711231401.GW546@tausq.org> Reply-To: Randolph Chung Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: parisc-linux@lists.parisc-linux.org To: Grant Grundler Return-Path: In-Reply-To: <20040711231401.GW546@tausq.org> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org > don't have an IDE drive to try it with, but if it works, shouldn't it be > done as a pcibios fixup instead? We already have a fixup routine in > drivers/parisc/superio.c:superio_fixup_pci(), so you can probably just > add it there. i.e. (the progif write was removed since it's redundant): Index: drivers/parisc/superio.c =================================================================== RCS file: /var/cvs/linux-2.6/drivers/parisc/superio.c,v retrieving revision 1.9 diff -u -p -r1.9 superio.c --- drivers/parisc/superio.c 18 May 2004 13:08:56 -0000 1.9 +++ drivers/parisc/superio.c 11 Jul 2004 23:33:06 -0000 @@ -482,6 +482,16 @@ void superio_fixup_pci(struct pci_dev *p pci_write_config_byte(pdev, PCI_CLASS_PROG, pdev->class); pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); + + /* IODC clobbers the CTRL registers with: + * CTRL1 = 0xf0 = "ATAPI buffer mode (no prefetching)" for everyone + * CTRL2 = 0x03 = mask chan1/2 interrupts + * CTRL3 = 0x00 = "disable prefetch buffer"/"Master Wait States" + */ + pci_write_config_byte(pdev, 0x40, 0xf0); /* IDE_CTRL1 */ + pci_write_config_byte(pdev, 0x41, 0x00); /* IDE_CTRL2 */ + pci_write_config_byte(pdev, 0x42, 0x00); /* IDE_CTRL3 */ + printk("PCI: Enabled native mode for NS87415 (pif=0x%x)\n", prog); } works fine on my c3750 with a cdrom drive too! Great job Grant :) randolph -- Randolph Chung Debian GNU/Linux Developer, hppa/ia64 ports http://www.tausq.org/ _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux