Commit Graph

21 Commits

Author SHA1 Message Date
mycroft 97de30ff26 Several things:
* Rearrange the speed mapping table and adjust the code so that the highest
  rate can actually be used.  Previously we ended up rounding up slightly
  lower speeds and then losing because set_params couldn't set the mode
  back to the current one.
* Allow 260 as a valid I/O address, since the SB1 can be jumpered to this.
* Change the MPU-401 code so it can be attached as a separate device.
  (XXX Really, the SB code ought to just attach a subdevice itself.)
* Do not attach an OPL on the SB1.  Writing to the OPL registers at
  SB_base+0 on this card wedges my machine.
  (XXX Should we access it at 388 instead?  The Creative web site claims
  that this board *does* have an OPL2, but I haven't played with this
  extensively.)
* Allocate the SB DMA channels at open time, rather than attach time, so
  that a single DRQ can be used for multiple cards (if only one is in use
  at a given time).
  (XXX Let me tell you why this is a horrible hack.  If the ISA DMA code
  tries to allocate a bounce buffer after boot time, it will generally fail,
  because there is no contiguous memory below 16MB and the code to allocate
  contiguous pages doesn't know how to move things around.  Now, we
  shouldn't ever be using bounce buffers here, because we use
  isa_dmamem_alloc().  So we just turn off BUS_DMA_ALLOCNOW and we don't
  actually try to.  That's cool, and it even works, but isa_dmamem_alloc()
  has the same problem.  It just happens that we allocate the ring buffers
  at boot time, and whenever we reallocate them (due to the buffer size
  changing), we just deallocated the previous (contiguous) buffer, so we get
  lucky.  This is absolutely disgusting and needs to be fixed.)
1999-03-22 07:37:35 +00:00
mycroft 4822d3d0b0 Move IRQ setup into frontend. Need to move DRQ handling as well. 1999-02-19 16:10:44 +00:00
augustss cd09067eb4 * Redo the way the way the MIDI driver attaches to audio devices.
* Improve the midisyn layer a little.
* Add a driver for the Yamaha OPL[23] FM synths.
  The opl driver is not finished yet; it sounds pretty awful.

For some strange reason I cannot get any FM sound from my SB64 cards,
but a regular SB16 works fine.
1998-08-17 21:16:09 +00:00
thorpej ad9b5bf5f0 Interrupt share type is EDGE. 1998-06-29 22:42:09 +00:00
thorpej 5bc2217a49 Nuke __BROKEN_INDIRECT_CONFIG. 1998-06-09 07:24:55 +00:00
thorpej 5f97398507 Adjust for changes to the ISA DMA API. 1998-06-09 00:05:44 +00:00
drochner 123570c713 fix inconsistent declaration in non-"__BROKEN_INDIRECT_CONFIG" case 1997-11-30 15:32:25 +00:00
augustss 5752a55af4 Zap drq2 if unused. 1997-08-28 00:02:12 +00:00
augustss a50d4ba893 XXX Add a drq2 locator for the ISA bus. Many sound cards need
two DMA channels to do e.g. full-duplex.  This allows
a way of specifying the second channel in a sane way.
THIS IS TEMPORARY.  The drq2 locator will go away when
the locator system has been changed to allow multiple
values per locator.
1997-08-26 19:26:38 +00:00
augustss 9de64894e9 Fix the "non-broken" indirect configuration so it might actually work. 1997-08-25 22:17:25 +00:00
augustss 785dcbd7f5 Remove indirect brokenness. 1997-08-24 20:06:34 +00:00
augustss a425e37505 Add a 'return 1' that got lost in the last commit. 1997-08-07 12:14:39 +00:00
augustss 3bcc377a4c Implement a function to test if a drq is taken and use it
in two drivers.  There are still many drivers left to fix...
1997-08-04 22:13:32 +00:00
augustss 9745684ebe Changes to the sudio system:
- It is now possible to handle devices that want "looping" DMA,
    e.g. the SoundBlaster correctly.  The WSS and SB drivers use this.
    To do this several new methods were introduced in audio_hw_if.
  - Different silence handling (forced by previous change).
  - The audio driver can now be mmap()-ed, but due to problems in
    the VM system only for writing for now.
  - The OSS (Linux) audio emulation takes advantage of some of the
    new features.
1997-07-27 01:16:32 +00:00
thorpej 11e78a6b0d Pull thorpej-bus-dma branch into mainline. 1997-06-06 23:43:45 +00:00
augustss 72b5ba3901 Redo the way selecting the mode for SB cards is done completely.
It is now table driven since there are so many different variations
of SB cards out there.
Also fix a bug that stopped SB2 and SBPro from working.
1997-05-23 21:19:59 +00:00
augustss d7a82223f4 Change lowater calculation a little.
Fix mixer setting bug and add some missing splaudio().
Set SB drq16 to 5 and don't pretend to be SB v1.0.
1997-05-17 23:26:33 +00:00
augustss 37be371415 Clean up emulation code, SB, and GUS drivers and add some more encoding
emulation to SB.
1997-05-13 19:02:11 +00:00
mycroft 95abb133dc Add 16-bit DRQ support on PnP, and enable 16-bit output. 1997-03-20 11:03:10 +00:00
thorpej 2953a0ce90 Pass the i/o handle, not bus PA, to bus_space_unmap().
From Matthias Drochner <drochner@zelz28.zel.kfa-juelich.de>,
in PR #3216.
1997-02-12 23:37:38 +00:00
christos e6717c0bc9 - convert to bus_space_*
- split attachment code to sb_isa.c
1997-01-16 21:03:30 +00:00