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2011-12-20memory: temporarily add memory_region_get_ram_addr()Avi Kivity1-0/+10
This is a layering violation, but needed while the code contains naked calls to qemu_get_ram_ptr() and the like. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-20memory: add API for observing updates to the physical memory mapAvi Kivity1-0/+47
Add an API that allows a client to observe changes in the global memory map: - region added (possibly with logging enabled) - region removed (possibly with logging enabled) - logging started on a region - logging stopped on a region - global logging started - global logging removed This API will eventually replace cpu_register_physical_memory_client(). Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-20memory: replace cpu_physical_sync_dirty_bitmap() with a memory APIAvi Kivity1-0/+10
The function is still used as the implementation. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-20memory: introduce memory_region_find()Avi Kivity1-0/+39
Given an address space (represented by the top-level memory region), returns the memory region that maps a given range. Useful for implementing DMA. The implementation is a simplistic binary search. Once we have a tree representation this can be optimized. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-20memory: add memory_region_is_logging()Avi Kivity1-0/+9
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-20memory: add memory_region_is_rom()Avi Kivity1-0/+9
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-20memory: add memory_region_is_ram()Avi Kivity1-0/+10
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-19Merge remote-tracking branch 'qemu-kvm/memory/mutators' into stagingAnthony Liguori1-0/+39
Conflicts: memory.h
2011-12-06memory: minor documentation fixes/enhancementsAdemar de Souza Reis Jr1-16/+22
Fix typos and minor documentation errors in both memory.h and docs/memory.txt. Also add missing documentation formatting tags to transaction functions. Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Ademar de Souza Reis Jr <areis@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-05memory: introduce memory_region_set_alias_offset()Avi Kivity1-0/+12
Add an API to update an alias offset of an active alias. This can be used to simplify implementation of dynamic memory banks. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-04memory: introduce memory_region_set_address()Avi Kivity1-0/+11
Allow changing the address of a memory region while it is in the memory hierarchy. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-12-04memory: introduce memory_region_set_enabled()Avi Kivity1-0/+17
This allows users to disable a memory region without removing it from the hierarchy, simplifying the implementation of memory routers. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-24memory: add MemoryRegionOps::valid.acceptsAvi Kivity1-0/+7
MemoryRegionOps::valid tries to declaratively specify which transactions are accepted by the device/bus, however it is not completely generic. Add a callback for special cases. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-10-16memory: use 128-bit integers for sizes and intermediatesAvi Kivity1-1/+2
Since the memory API supports 64-bit buses, it needs a larger type to represent intermediate results. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-10-02memory: simple memory tree printerBlue Swirl1-0/+2
Add a monitor command 'info mtree' to show the memory hierarchy much like /proc/iomem in Linux. Signed-off-by: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-09-25memory: implement memory_region_set_readonly()Avi Kivity1-0/+1
The property is inheritable, but only if set to true. This is so that memory routers can mark sections of RAM as read-only via aliases. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-08-26memory: add opaque parameter to memory_region_init_rom_device()Avi Kivity1-0/+1
The MemoryRegionOps callbacks expect it. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-08-12memory: add API for creating ROM/device regionsAvi Kivity1-0/+34
ROM/device regions act as mapped RAM for reads, can I/O memory for writes. This allow emulation of flash devices. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-12memory: reclaim resources when a memory region is destroyed for goodAvi Kivity1-0/+1
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-08memory: rename PORTIO_END to PORTIO_END_OF_LISTAvi Kivity1-1/+1
For consistency with other _END_OF_LIST macros. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: transaction APIAvi Kivity1-0/+8
Allow changes to the memory hierarchy to be accumulated and made visible all at once. This reduces computational effort, especially when an accelerator (e.g. kvm) is involved. Useful when a single register update causes multiple changes to an address space. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: add ioeventfd supportAvi Kivity1-0/+45
As with the rest of the memory API, the caller associates an eventfd with an address, and the memory API takes care of registering or unregistering when the address is made visible or invisible to the guest. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: add backward compatibility for old mmio registrationAvi Kivity1-0/+10
This eases the transition to the new API. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: add backward compatibility for old portio registrationAvi Kivity1-0/+17
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: I/O address space supportAvi Kivity1-0/+2
Allow registering I/O ports via the same mechanism as mmio ranges. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: late initialization of ram_addrAvi Kivity1-0/+1
For non-RAM memory regions, we cannot tell whether this is an I/O region or an MMIO region. Since the qemu backing registration is different for the two, we have to defer initialization until we know which address space we are in. These shenanigans will be removed once the backing registration is unified with the memory API. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: rename MemoryRegion::has_ram_addr to ::terminatesAvi Kivity1-1/+1
I/O regions will not have ram_addrs, so this is a better name. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29memory: implement dirty trackingAvi Kivity1-0/+1
Currently dirty tracking is implemented by passing through all calls to the underlying cpu_physical_memory_*() calls. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29Hierarchical memory region APIAvi Kivity1-0/+385
The memory API separates the attributes of a memory region (its size, how reads or writes are handled, dirty logging, and coalescing) from where it is mapped and whether it is enabled. This allows a device to configure a memory region once, then hand it off to its parent bus to map it according to the bus configuration. Hierarchical registration also allows a device to compose a region out of a number of sub-regions with different properties; for example some may be RAM while others may be MMIO. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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