This reverts commit 8ef9ea85, reversing
changes made to 444dc482.

From Avi:

  Please revert the entire pull (git revert 8ef9ea85) while I work this
  out - it isn't trivial.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Some gcc versions do not properly detect that all possible cases are
covered and base and size are always initialized. Please gcc by defining
a pseudo default case.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

cfi02 is annoying in that is ignores some address bits; we probably
want explicit support in the memory API for that.
Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

The code will remap all PAMs, even if just one is updated, resulting
in reduced performance.  Wrap in a transaction to detect that those
other PAMs have not changed.
Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

This prevents spurious unmapping and remapping of the vga windows,
which reduces performance.
Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Acked-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

ppc maps the escc mmio region both at a fixed offset (as a sysbus area) and as part of a PCI BAR.
This crashes, since a MemoryRegion may have only one parent.  Use an alias so we have a separate
MemoryRegion for the BAR.
Signed-off-by: NAvi Kivity <avi@redhat.com>

The map/unmap code was assymetric - unmap used the local MemoryRegion while
map used isa_mmio_init(), which cannot handle dynamic mappings.

Fix by using isa_mmio_setup() and the local MemoryRegion.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Remove a spurious second map of the OMAP GPMC CS0 region on reset.
This fixes an assertion failure when we try to add the region to
its container when it was already added. (The old code did not
complain about mismatched map/unmap calls, but the new MemoryRegion
implementation does.)
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

This is a microblaze target specific function that belongs outside
of xilinx.h (which is a collection of target independent device model
instantiator functions)
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Added some missing #includes for this file. Previously this file
relied on its clients to pre-include its dependencies.
Signed-off-by: NPeter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Memory region refactorings obsoleted them.

CC: Avi Kivity <avi@redhat.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Most VGA memory access modes require MMIO handling as they demand weird
logic to get a byte from or into the video RAM. However, there is one
exception: chain 4 mode with all memory planes enabled for writing. This
mode actually allows lineary mapping, which can then be combined with
dirty logging to accelerate KVM.

This patch accelerates specifically VBE accesses like they are used by
grub in graphical mode. Not only the standard VGA adapter benefits from
this, also vmware and spice in VGA mode.

CC: Gerd Hoffmann <kraxel@redhat.com>
CC: Avi Kivity <avi@redhat.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

After the conversion to the new Memory API, vga_dirty_log_restart became
seriously pointless. Remove it from vmware-vga and and then finally drop
the service.

CC: Andrzej Zaborowski <balrogg@gmail.com>
CC: Avi Kivity <avi@redhat.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The code was disabled since day 1 of vmware-vga, and now it does not
even build anymore. Time for a cleanup.

CC: Andrzej Zaborowski <balrogg@gmail.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Elimiates 'vmsvga_value_write: guest runs Linux.' messages from the
console.

CC: Andrzej Zaborowski <balrogg@gmail.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Fixes cold reset in vmware graphic modes. We need to split up the reset
function for this purpose, breaking out init-once bits.

Cc: Andrzej Zaborowski <balrogg@gmail.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

If the polarity bit is set in the redirection table, the input level
simply has to inverted as it is low active in this case.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Polarity of external interrupts needs to be handled in the IOAPIC.
Passing it to the APIC is pointless. So remove all these arguments.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The current implementation of PAM and the PCI holes is broken in several
ways:

  - PCI BARs are not restricted to the PCI hole (a BAR may hide memory)
  - PCI devices do not respect PAM (if a PCI device maps a region while
    PAM maps the region to RAM, the request will be honored)

This patch fixes things by introducing a pci address space, and using
memory region aliases to represent PAM regions, SMRAM, and PCI holes.

The memory hierarchy looks something like

system_memory
 |
 +--- low memory alias (0-0xe0000000)
 |      |
 |      +-- ram@0
 |
 +--- high memory alias (0x100000000-EOM)
 |      |
 |      +-- ram@0xe0000000
 |
 +--- pci hole alias (end of low memory-0x100000000)
 |      |
 |      +-- pci@end-of-low-memory
 |
 |
 +--- pam[n] (0xc0000-0xc3fff etc) (when set to pci, priority 1)
 |      |
 |      +-- pci@0xc4000 etc
 |
 +--- smram (0xa0000-0xbffff) (when set to pci/vga, priority 1)
        |
        +-- pci@0xa0000 etc

ram (simple ram region)

pci
 |
 +--- BARn
 |
 +--- VGA 0xa0000-0xbffff
 |
 +--- ROMs
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Instead, use the bus accessors, or get the address space directly
from the board constructor.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Returns the PCI address space.  Useful for bridges that can obscure
part of the PCI address space.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

A helper that returns the address space used by ISA devices.  Useful
for getting rid of isa_mem_base, multiple ISA buses, or ISA buses behind
bridges.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This problem with this function is that it is not reversible - it is
impossible to know where things are registered and unregister them
exactly.  As there are no more users, we can remove it.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>