On Sunday 01 Aug 2004 00:22, Alan Cox wrote:

There is a messy scsi faking vendor driver for this card but this instead
is a standard Linux IDE layer driver.
+ *  Documentation available from
+ *     http://www.ite.com.tw/pc/IT8212F_V04.pdf

A newer version than the one I have.  Looks like there's at least one newer 
chip revision than the 0x11 that I have too.

Just need to add something like this to get it to compile.

--- linux-2.6.8-rc2/include/linux/pci_ids.h.it8212	2004-08-01 

18:44:08.000000000 +0100

+++ linux-2.6.8-rc2/include/linux/pci_ids.h	2004-08-01 19:14:44.000000000 
+0100

@@ -1634,6 +1634,7 @@
 #define PCI_VENDOR_ID_ITE		0x1283
 #define PCI_DEVICE_ID_ITE_IT8172G	0x8172
 #define PCI_DEVICE_ID_ITE_IT8172G_AUDIO 0x0801
+#define	PCI_DEVICE_ID_ITE_8212		0x8212
 #define PCI_DEVICE_ID_ITE_8872		0x8872
 #define PCI_DEVICE_ID_ITE_IT8330G_0	0xe886
 
---

Some quick test results I just got.  My set up is a IT8212 PCI card running 
two UDMA133 discs in software RAID0.  I'd like to test the smart RAID some 
time, but that isn't really practical at the moment.

    IT8212: IDE controller at PCI slot 0000:00:0c.0
    ACPI: PCI interrupt 0000:00:0c.0[A] -> GSI 17 (level, low) -> IRQ 17
    IT8212: chipset revision 17
    IT8212: 100% native mode on irq 17

That makes sense.

        ide2: BM-DMA at 0xec00-0xec07, BIOS settings: hde:pio, hdf:pio
    it8212: controller in RAID mode.

That doesn't.  I have no RAID sets defined in the IT8212 card BIOS.  BTW, the 
BIOS is an old one and should be updated.  However when I tried the updater 
claimed success, but on reboot it hadn't changed.

        ide3: BM-DMA at 0xec08-0xec0f, BIOS settings: hdg:pio, hdh:pio
    hde: Maxtor 6Y120P0, ATA DISK drive
    it8212: selected 50MHz clock.

Nor does this as it really should be using the 66MHz clock setting.

    ide2 at 0xb000-0xb007,0xa802 on irq 17
    hde: max request size: 128KiB
    hde: recal_intr: status=0x51 { DriveReady SeekComplete Error }
    hde: recal_intr: error=0x04 { DriveStatusError }

Any idea what could be causing this?  My hacked driver doesn't get this in 
2.6.7, but then it could be a 2.6.8 problem.

    hde: 240121728 sectors (122942 MB) w/7936KiB Cache, CHS=65535/16/63, 
UDMA(33)

Oddly my driver reports UDMA(33) too, but that's probably bad coding as it is 
definitely running faster than that.

     /dev/ide/host2/bus0/target0/lun0: p1 p2
    hdg: Maxtor 6Y120P0, ATA DISK drive
    it8212: selected 50MHz clock.
    ide3 at 0xa400-0xa407,0xa002 on irq 17
    hdg: max request size: 128KiB
    hdg: recal_intr: status=0x51 { DriveReady SeekComplete Error }
    hdg: recal_intr: error=0x04 { DriveStatusError }
    hdg: 240121728 sectors (122942 MB) w/7936KiB Cache, CHS=65535/16/63, 
UDMA(33)
     /dev/ide/host2/bus1/target0/lun0: p1 p2

And the same speed problems again.

Now some speed tests with hdparm

# hdparm -Tt /dev/hd[eg] /dev/md[01]

/dev/hde:
 Timing buffer-cache reads:   3016 MB in  2.00 seconds = 1505.97 MB/sec
 Timing buffered disk reads:   86 MB in  3.02 seconds =  28.49 MB/sec

/dev/hdg:
 Timing buffer-cache reads:   3012 MB in  2.00 seconds = 1504.72 MB/sec
 Timing buffered disk reads:   86 MB in  3.02 seconds =  28.46 MB/sec

/dev/md0:
 Timing buffer-cache reads:   2928 MB in  2.00 seconds = 1462.03 MB/sec
 Timing buffered disk reads:  156 MB in  3.01 seconds =  51.90 MB/sec

/dev/md1:
 Timing buffer-cache reads:   2996 MB in  2.00 seconds = 1495.98 MB/sec
 Timing buffered disk reads:  156 MB in  3.01 seconds =  51.77 MB/sec

So I guess it actually is running at 33MHz!

Current results with my hack

# hdparm -Tt /dev/hd[eg] /dev/md[01]

/dev/hde:
 Timing buffer-cache reads:   2980 MB in  2.00 seconds = 1488.74 MB/sec
 Timing buffered disk reads:  172 MB in  3.02 seconds =  57.04 MB/sec

/dev/hdg:
 Timing buffer-cache reads:   2988 MB in  2.00 seconds = 1493.48 MB/sec
 Timing buffered disk reads:  170 MB in  3.03 seconds =  56.15 MB/sec

/dev/md0:
 Timing buffer-cache reads:   2964 MB in  2.00 seconds = 1480.74 MB/sec
 Timing buffered disk reads:  286 MB in  3.00 seconds =  95.25 MB/sec

/dev/md1:
 Timing buffer-cache reads:   2924 MB in  2.00 seconds = 1460.03 MB/sec
 Timing buffered disk reads:  290 MB in  3.01 seconds =  96.33 MB/sec

-- 
Ian.