Hi,
matthieu castet wrote:
Hi,
Alan Cox wrote:
On Llu, 2006-05-08 at 23:57 +0200, Matthieu CASTET wrote:
PS : any idea in order to allow to work my cdrw drive, that don't return
interrupt when setting xfermode ?
The real question is "why is it not returning an interrupt", as it is
required to do so unless nIEN masking is active. Handling that is a
matter for the libata core itself and depends on what Jeff has planned,
but I'm still a bit bothered that it may not be a drive problem but a
bug in the via pata driver.
You seem right : I tried the drive on the sil680 and it works [1].
The same config (only one slave drive channel 1) fails [2].
What is strange it that there is the same problem with the old via ide
driver and hdparm -X [3].
Have you any hint what could I try ?
It seems there is really a bug in the timing code.
I attach the lspci diff (from ide to pata) and the viaideinfo one
Matthieu
00: 06 11 71 05 07 00 90 02 06 8a 01 01 00 20 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 01 fc 00 00 00 00 00 00 00 00 00 00 06 11 71 05
30: 00 00 00 00 c0 00 00 00 00 00 00 00 ff 01 00 00
40: 0b f2 09 35 18 1c c0 00 20 20 20 20 ff 00 20 20
-50: e6 e6 e1 e1 0c 00 00 00 a8 a8 a8 a8 00 00 00 00
+50: 27 27 27 27 0c 00 00 00 a8 a8 a8 a8 00 00 00 00
60: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
70: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
-80: 00 40 ed 3f 00 00 00 00 00 00 00 00 00 00 00 00
+80: 00 f0 b9 01 00 00 00 00 00 50 a9 01 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
@@ -16,7 +16,7 @@
Post Write Buffer: yes yes
Enabled: yes yes
Simplex only: no no
-Cable Type: 80w 40w
+Cable Type: 40w 40w
-------------------drive0----drive1----drive2----drive3-----
Transfer Mode: UDMA UDMA UDMA UDMA
Address Setup: 120ns 120ns 120ns 120ns
@@ -24,5 +24,5 @@
Cmd Recovery: 30ns 30ns 30ns 30ns
Data Active: 90ns 90ns 90ns 90ns
Data Recovery: 30ns 30ns 30ns 30ns
-Cycle Time: 22ns 22ns 60ns 60ns
-Transfer Rate: 88.8MB/s 88.8MB/s 33.3MB/s 33.3MB/s
+Cycle Time: 67ns 67ns 67ns 67ns
+Transfer Rate: 29.6MB/s 29.6MB/s 29.6MB/s 29.6MB/s
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