Red Hat Bugzilla – Bug 176560
Southbridge SiS 0965 with driver SiS5513 has no working DMA
Last modified: 2015-01-04 17:23:55 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8) Gecko/20051201 Fedora/1.5-1.1.fc4.nr Firefox/1.5 Description of problem: The driver that comes with the kernel for the southbridge SiS 965 and suppose to work with the driver for SiS 5513 chipset does not include DMA support. It was tested with [hdparm -d <device>] and with the same application it is not possible to activated the DMA support. Version-Release number of selected component (if applicable): 2.6.14-1.1653_FC4 How reproducible: Always Steps to Reproduce: 1. In a system with SiS 965 Sothbridge and Chipset SiS 5513 install the corresponding kernel; 2. Verify with [hdparm], as root, if the DMA is enable for a give device (in my case a CD-ROM drive); 3. Try to activate the DMA support, using [hdparm]; It fails every time. Actual Results: The system respond with an error message that says that it is impossible to adjust the given parameter, DMA support to active. Expected Results: DMA should be always active. Additional info: I patched the kernel and it works. The above patch was inspired on: http://lkml.org/lkml/2005/10/5/293 1. Patch to [pci_ids.h], called [linux-2.6-pci_ids.patch]: --- a/include/linux/pci_ids.h 2005-12-26 09:00:09.000000000 +0100 +++ b/include/linux/pci_ids.h 2005-12-26 09:00:27.000000000 +0100 @@ -672,6 +672,7 @@ #define PCI_DEVICE_ID_SI_961 0x0961 #define PCI_DEVICE_ID_SI_962 0x0962 #define PCI_DEVICE_ID_SI_963 0x0963 +#define PCI_DEVICE_ID_SI_965 0x0965 #define PCI_DEVICE_ID_SI_5107 0x5107 #define PCI_DEVICE_ID_SI_5300 0x5300 #define PCI_DEVICE_ID_SI_5511 0x5511 2. Patch to [sis5513.c], called [linux-2.6-sis5513.patch]: --- a/drivers/ide/pci/sis5513.c 2005-12-26 08:59:29.000000000 +0100 +++ b/drivers/ide/pci/sis5513.c 2005-12-26 09:02:44.000000000 +0100 @@ -20,6 +20,7 @@ * ATA16/33 support from specs * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw> * ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz> + * ATA133 inspired on http://lkml.org/lkml/2005/10/5/293 * * Documentation: * SiS chipset documentation available under NDA to companies only @@ -74,7 +75,7 @@ #define ATA_100a 0x04 // SiS730/SiS550 is ATA100 with ATA66 layout #define ATA_100 0x05 #define ATA_133a 0x06 // SiS961b with 133 support -#define ATA_133 0x07 // SiS962/963 +#define ATA_133 0x07 // SiS962/963/965 static u8 chipset_family; @@ -87,6 +88,8 @@ static const struct { u8 chipset_family; u8 flags; } SiSHostChipInfo[] = { + { "SiS965", PCI_DEVICE_ID_SI_965, ATA_133 }, + { "SiS745", PCI_DEVICE_ID_SI_745, ATA_100 }, { "SiS735", PCI_DEVICE_ID_SI_735, ATA_100 }, { "SiS733", PCI_DEVICE_ID_SI_733, ATA_100 }, 3. Patch to {kernel-2.6.spec], called [kernel.kernel-2.6.spec.2.6.14.1-653.patch]: --- kernel-2.6.spec.orig 2005-12-26 09:04:38.000000000 +0100 +++ kernel-2.6.spec 2005-12-26 09:07:14.000000000 +0100 @@ -352,6 +352,8 @@ Patch1771: linux-2.6-sata-promise-pata-p Patch1780: linux-2.6-net-bonding-feature-consolidation.patch Patch1781: linux-2.6-net-bridge-feature-consolidation.patch Patch1782: linux-2.6-selinux-mls-compat.patch +Patch1783: linux-2.6-pci_ids.patch +Patch1784: linux-2.6-sis5513.patch # ACPI patches. @@ -813,6 +815,9 @@ cd linux-%{kversion} %patch1780 -p1 %patch1781 -p1 %patch1782 -p1 +# Fix DMA on SiS965 southbridge with SiS5513 driver +%patch1783 -p1 +%patch1784 -p1 # ACPI patches. # Enable EC burst 4. Build the rpm files and install it; 5. After that the system work as expected.
I have tryed the new kernel, but the driver for [sata_sis] in the kernel-2.6.14-1.1656_FC4 is the same as in kernel-2.6.14-1.1653_FC4, and the problem is still valid.
Oops, I meant [sis5513] and [pci_ids] on the above comment. Sorry!
Created attachment 122922 [details] Proposed patch to [sis5513.c]
Created attachment 122923 [details] Proposed patch to [pci_ids.c]
I got the same Problem with SIS965l and applied this patch to make it work: --- linux-2.6.14/drivers/ide/pci/sis5513.c~sis5513-support-sis-965l 2006-01-27 16:47:57.088109691 +0100 +++ linux-2.6.14/drivers/ide/pci/sis5513.c 2006-01-27 17:05:40.452482594 +0100 @@ -777,6 +777,10 @@ pci_write_config_dword(dev, 0x54, idemisc | 0x40000000); printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n"); } + } else if (trueid == 0x180) { /* sis965L */ + chipset_family = ATA_133; + printk(KERN_INFO "SIS5513: SiS 965 IDE " + "UDMA133 controller\n"); } } @@ -952,6 +956,7 @@ static struct pci_device_id sis5513_pci_tbl[] = { { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { PCI_VENDOR_ID_SI, 0x180, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, { 0, }, }; MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
My point is: why there is not yet a patch on Kernel tree. There are until now (thanks Frank) 2 solutions. I realy don't care much about which will be taken just that I don't need to make my own kernel to play a DVD without skips.
This is a mass-update to all currently open kernel bugs. A new kernel update has been released (Version: 2.6.15-1.1830_FC4) based upon a new upstream kernel release. Please retest against this new kernel, as a large number of patches go into each upstream release, possibly including changes that may address this problem. This bug has been placed in NEEDINFO_REPORTER state. Due to the large volume of inactive bugs in bugzilla, if this bug is still in this state in two weeks time, it will be closed. Should this bug still be relevant after this period, the reporter can reopen the bug at any time. Any other users on the Cc: list of this bug can request that the bug be reopened by adding a comment to the bug. If this bug is a problem preventing you from installing the release this version is filed against, please see bug 169613. Thank you.
The problem was resolved by the new kernel: 2.6.15-1.1830_FC4.