[alsa-devel] [PATCH] ALSA: Support Media Vision Jazz16 chips

[Rask Ingemann Lambertsen]

On Wed, Mar 28, 2007 at 01:11:35AM +0200, Rene Herman wrote:
> 
> Nothing much I'd say. As far as I know, the card's half-duplex.

   It is clearly only half-duplex when the DSP is in high-speed mode. It is
less clear what will happen in low-speed mode if one tries to capture during
playback or vice versa. I don't know if the Jazz16 needs high-speed mode at
all, so I'll do some testing.

> I just 
> now installed the Media Vision DOS driver (*) and it allows the 
> following settings. Defaults starred:
> 
> Jazz I/O Port:		210, *220, 230, 240, 250, 260 (<-- align 10?)
> Jazz IRQ:		2, 3, *5, 7, 10, 15
> 8 bit DMA:		*1, 3
> 16 bit DMA:		1, 3, *5, 7
> MPU-401 Enable:		Yes (<-- yes, no "No")
> MPU-401 I/O Port:	300, 310, 320, *330
> MPU-401 IRQ:		*2, 3, 5, 7 (<-- you're also listing 10 and 15?)

   I don't recall having ever managed to generate an MPU interrupt. I have
no MIDI hardware.

> CD ROM Port:		320, *340
> 
> That "CD ROM Port" seems to be a version glitch; mine only has an NCR 
> SCSI chip with a 2x8 pin connector but the install asked  me if I had a 
> Sony, Panasonic or Mitsumi CD-ROM (those old proprietary CD-ROM interfaces).

   Mine has an IDE port, jumper A for 0x1f0/0x3f6, jumper B for 0x1f0/0x376,
jumper "CDROM IRQ" for 10, 11, 14 or 15. J9 & J10: 1-2 AMP OFF, 2-3: AMP ON.

   Note that my board is rather anonymous. For all I know, it could be an
OEM one.
 
> Not much idea what that 1 and 3 are doing under "16-bit DMA". Things do 
> seem to work when I pick 1 for the 8-bit and 3 for the 16-bit. But the 
> DOS drivers at least don't list 5 and 7 as valid 8-bit DMAs...

   Here goes (following a change of DMA maps in the PnP driver):

# echo 'set irq 10 dma 5 dma 1' > /sys/bus/pnp/devices/03\:01/resources
# modprobe snd-jazz16
$ cat /proc/asound/cards
 0 [CMI8738        ]: CMI8738 - C-Media PCI CMI8738
                      C-Media PCI CMI8738 (model 37) at 0xd800, irq 9
 1 [Jazz16         ]: Jazz16 - Media Vision Jazz16
                      Sound Blaster Pro (Jazz16) at 0x220, irq 10, dma8 5, dma16 1

$ aplay -v -D hw:Jazz16,0 /tmp/jazz16ting/TESTDMA.WAV
Playing WAVE '/tmp/jazz16ting/TESTDMA.WAV' : Unsigned 8 bit, Rate 11025 Hz, Mono
Hardware PCM card 1 'Media Vision Jazz16' device 0 subdevice 0
Its setup is:
  stream       : PLAYBACK
  access       : RW_INTERLEAVED
  format       : U8
  subformat    : STD
  channels     : 1
  rate         : 10989
  exact rate   : 10989 (1000000/91)
  msbits       : 8
  buffer_size  : 5495
  period_size  : 1374
  period_time  : 125022
  tick_time    : 4000
  tstamp_mode  : NONE
  period_step  : 1
  sleep_min    : 0
  avail_min    : 1374
  xfer_align   : 1374
  start_threshold  : 4122
  stop_threshold   : 5495
  silence_threshold: 0
  silence_size : 0
  boundary     : 1440481280
pointer (0x1578) for DMA #5 is greater than transfer size (0x1577)
(repeats four times - note 0x1577 = 5495 = buffer size above)

   Playback sounds normal except for a click for each "pointer ..." message.
Any ideas? /proc/interrupts increments by 11.

$ aplay -v -D hw:Jazz16,0 /tmp/male.wav
Playing WAVE '/tmp/male.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono
Hardware PCM card 1 'Media Vision Jazz16' device 0 subdevice 0
Its setup is:
  stream       : PLAYBACK
  access       : RW_INTERLEAVED
  format       : S16_LE
  subformat    : STD
  channels     : 1
  rate         : 8000
  exact rate   : 8000 (1000000/125)
  msbits       : 16
  buffer_size  : 4000
  period_size  : 1000
  period_time  : 125000
  tick_time    : 4000
  tstamp_mode  : NONE
  period_step  : 1
  sleep_min    : 0
  avail_min    : 1000
  xfer_align   : 1000
  start_threshold  : 4000
  stop_threshold   : 4000
  silence_threshold: 0
  silence_size : 0
  boundary     : 2097152000
aplay: pcm_write:1257: write error: Ind/ud-fejl

   No sound, no interrupts and this message from /var/log/kernel:
kernel: playback write error (DMA or IRQ trouble?)

> Would you happen to have a description of the DIP switches/jumpers? On 
> mine, there's a red block of 8 DIP switches marked
> 
> MAB0 | MAB1 | DISMPU | DAB2 | DAB1 | DAB0 | DISJS | <empty>
> 
> which with the exception of the two DIS switches isn't completely 
> self-evident;

   Guesswork: MAB0/1 to select SCSI BIOS memory address, DAB0-2 to select
NCR chip SCSI device ID - does it happen to be set to 7? DAB0-2 could also
tbe the NCR chip base address.

> especially not since the chip's not on the bus before 
> being programmed to be through software.

   Does that also include the SCSI part?

> There's also two 2x3 jumper 
> blocks J10 and J11 that I've no idea about.

   Line out left/right amplifier on/off, I guess.

-- 
Rask Ingemann Lambertsen