Messages in this thread | | | Date | Sat, 24 Feb 2001 16:31:42 +0200 (EET) | From | Pekka Savola <> | Subject | 2.2.19pre14 VP3 + Quantum: dma on hangs |
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Hello all,
Using 2.2.19pre14 with: * software raid * raid1 readbalancing * i2c * lm_sensors * ipsec
My drives are as follows:
hda: QUANTUM FIREBALLP AS20.5, 19595MB w/1902kB Cache, CHS=2498/255/63 hdc: QUANTUM FIREBALLP AS20.5, 19595MB w/1902kB Cache, CHS=39813/16/63 hdd: IBM-DTTA-350840, 8063MB w/467kB Cache, CHS=16383/16/63 hdb: ATAPI 4X CD-ROM drive, 256kB Cache
[ Bios sees: HDA & HDC : udma5, HDD: udma2 ]
And the mainboard related stuff in lspci:
00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev 04) 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP] 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] (rev 47) 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev 06) 00:07.2 USB Controller: VIA Technologies, Inc. VT82C586B USB (rev 02) 00:07.3 Bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10)
Now, if I turn on dma on hdd, and run hdparm benchmark, everything works fine.
If I turn on dma with hdparm on hda or hdc, next disk activity will freeze the system completely. No keyboard interaction, not anything. Only reset helps.
Also, if I disable UDMA in bios completely on hda and hdc, hdparm will work, but the speed is awful (only ~6 MB/s) even if DMA is enabled.
The most relevant kernel settings are, I think:
CONFIG_BLK_DEV_IDEDMA=y # CONFIG_BLK_DEV_OFFBOARD is not set CONFIG_IDEDMA_AUTO=y # CONFIG_BLK_DEV_OPTI621 is not set # CONFIG_BLK_DEV_ALI15X3 is not set # CONFIG_BLK_DEV_TRM290 is not set # CONFIG_BLK_DEV_NS87415 is not set CONFIG_BLK_DEV_VIA82C586=y # CONFIG_BLK_DEV_CMD646 is not set # CONFIG_BLK_DEV_CS5530 is not set # CONFIG_IDE_CHIPSETS is not set
Any ideas?
Please Cc: -- Pekka Savola "Tell me of difficulties surmounted, Netcore Oy not those you stumble over and fall" Systems. Networks. Security. -- Robert Jordan: A Crown of Swords
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