Commit Graph

19 Commits

Author SHA1 Message Date
Markus Armbruster bd36a618cc isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.h
DMA_transfer_handler is actually an ISA thing, and as such has no
business in qemu-common.h.  Move it to hw/isa/isa.h, and rename it to
IsaDmaTransferHandler.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00
Hervé Poussineau bb8f32c031 i8257: fix Terminal Count status
When a DMA transfer is done (ie all bytes have been transfered), the corresponding
Terminal Count bit must be set in the status register.
This bit is already cleared in i8257_read_cont and i8257_write_cont when required.

This fixes (at least) floppy transfer in IBM 40p firmware, which checks in DMA
controller if everything went fine.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-Id: <1456404332-31556-1-git-send-email-hpoussin@reactos.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-07 13:18:28 +01:00
Hervé Poussineau ba0a71022c dma: remove now useless DMA_* functions
Keep only DMA_init function as a wrapper around DMA controllers creation.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-20-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:58 -05:00
Hervé Poussineau 16ffe36360 i8257: implement the IsaDma interface
Rewrite the global DMA_*() functions to use the IsaDma interface.
Note that these functions will be deleted in a few commits.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-12-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:57 -05:00
Hervé Poussineau f5f19ee2e4 i8257: move state definition to new independent header
We will now be able to embed the i8257 interrupt controller in another object.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-10-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:56 -05:00
Hervé Poussineau 340e19ebf2 i8257: QOM'ify
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-9-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:56 -05:00
Hervé Poussineau 8d3c4c81f3 i8257: add missing const
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-8-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:56 -05:00
Hervé Poussineau b9ebd28c62 i8257: make the DMA running method per controller
This removes some static/global variables, and we're now running only the
required controller (master or slave)

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-7-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:56 -05:00
Hervé Poussineau 74c47de010 i8257: rename functions to start with i8257_ prefix
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-6-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:56 -05:00
Hervé Poussineau 0eee6d6262 i8257: rename struct dma_regs to I8257Regs
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-5-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:55 -05:00
Hervé Poussineau 6a128b1330 i8257: rename struct dma_cont to I8257State
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-4-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:55 -05:00
Hervé Poussineau 5714694192 i8257: pass ISA bus to DMA_init() function
i8257 DMA controller exists on one ISA bus, so let's specify it at initialization.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 1453843944-26833-3-git-send-email-hpoussin@reactos.org
Signed-off-by: John Snow <jsnow@redhat.com>
2016-02-03 11:28:55 -05:00
Peter Maydell b6a0aa0537 x86: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-11-git-send-email-peter.maydell@linaro.org
2016-01-29 15:07:22 +00:00
Paolo Bonzini 5039d6e235 i8257: remove cpu_request_exit irq
This is unused.  cpu_exit now is almost exclusively an internal function
to the CPU execution loop.  In a few patches, we'll change the remaining
occurrences to qemu_cpu_kick, making it truly internal.

Reviewed-by: Richard henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09 15:34:53 +02:00
Paolo Bonzini 19d2b5e6ff i8257: rewrite DMA_schedule to avoid hooking into the CPU loop
The i8257 DMA controller uses an idle bottom half, which by default
does not cause the main loop to exit.  Therefore, the DMA_schedule
function is there to ensure that the CPU relinquishes the iothread
mutex to the iothread.

However, this is not enough since the iothread will call
aio_compute_timeout() and go to sleep again.  In the iothread
world, forcing execution of the idle bottom half is much simpler,
and only requires a call to qemu_notify_event().  Do it, removing
the need for the "cpu_request_exit" pseudo-irq.  The next patch
will remove it.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09 15:34:53 +02:00
Philipp Hahn 7dbb4c49bf hw/dma/i8257: Silence phony error message
Convert into trace event. Otherwise the message
	dma: unregistered DMA channel used nchan=0 dma_pos=0 dma_len=1
gets printed every time and fills up the log-file with 50 MiB / minute.

Signed-off-by: Philipp Hahn <hahn@univention.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-16 12:35:02 +02:00
Juan Quintela d49805aeea savevm: Remove all the unneeded version_minimum_id_old (x86)
After previous Peter patch, they are redundant.  This way we don't
assign them except when needed.  Once there, there were lots of case
where the ".fields" indentation was wrong:

     .fields = (VMStateField []) {
and
     .fields =      (VMStateField []) {

Change all the combinations to:

     .fields = (VMStateField[]){

The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Acked-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-16 04:55:26 +02:00
Paolo Bonzini 2c9b15cab1 memory: add owner argument to initialization functions
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-07-04 17:42:44 +02:00
Paolo Bonzini 49ab747f66 hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:12 +02:00