memory: include MemoryListener documentation and some missing function parameters
These cover the remaining warnings from kernel-doc. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20191029162248.13383-7-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Paolo Bonzini
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f3224c5285
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5d24821318
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@ -423,30 +423,232 @@ struct IOMMUMemoryRegion {
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* Use with memory_listener_register() and memory_listener_unregister().
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*/
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struct MemoryListener {
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/**
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* @begin:
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*
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* Called at the beginning of an address space update transaction.
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* Followed by calls to #MemoryListener.region_add(),
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* #MemoryListener.region_del(), #MemoryListener.region_nop(),
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* #MemoryListener.log_start() and #MemoryListener.log_stop() in
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* increasing address order.
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*
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* @listener: The #MemoryListener.
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*/
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void (*begin)(MemoryListener *listener);
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/**
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* @commit:
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*
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* Called at the end of an address space update transaction,
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* after the last call to #MemoryListener.region_add(),
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* #MemoryListener.region_del() or #MemoryListener.region_nop(),
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* #MemoryListener.log_start() and #MemoryListener.log_stop().
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*
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* @listener: The #MemoryListener.
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*/
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void (*commit)(MemoryListener *listener);
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/**
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* @region_add:
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*
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* Called during an address space update transaction,
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* for a section of the address space that is new in this address space
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* space since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The new #MemoryRegionSection.
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*/
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void (*region_add)(MemoryListener *listener, MemoryRegionSection *section);
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/**
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* @region_del:
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*
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* Called during an address space update transaction,
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* for a section of the address space that has disappeared in the address
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* space since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The old #MemoryRegionSection.
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*/
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void (*region_del)(MemoryListener *listener, MemoryRegionSection *section);
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/**
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* @region_nop:
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*
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* Called during an address space update transaction,
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* for a section of the address space that is in the same place in the address
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* space as in the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The #MemoryRegionSection.
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*/
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void (*region_nop)(MemoryListener *listener, MemoryRegionSection *section);
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/**
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* @log_start:
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*
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* Called during an address space update transaction, after
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* one of #MemoryListener.region_add(),#MemoryListener.region_del() or
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* #MemoryListener.region_nop(), if dirty memory logging clients have
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* become active since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The #MemoryRegionSection.
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* @old: A bitmap of dirty memory logging clients that were active in
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* the previous transaction.
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* @new: A bitmap of dirty memory logging clients that are active in
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* the current transaction.
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*/
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void (*log_start)(MemoryListener *listener, MemoryRegionSection *section,
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int old, int new);
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/**
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* @log_stop:
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*
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* Called during an address space update transaction, after
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* one of #MemoryListener.region_add(), #MemoryListener.region_del() or
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* #MemoryListener.region_nop() and possibly after
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* #MemoryListener.log_start(), if dirty memory logging clients have
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* become inactive since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The #MemoryRegionSection.
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* @old: A bitmap of dirty memory logging clients that were active in
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* the previous transaction.
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* @new: A bitmap of dirty memory logging clients that are active in
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* the current transaction.
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*/
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void (*log_stop)(MemoryListener *listener, MemoryRegionSection *section,
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int old, int new);
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/**
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* @log_sync:
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*
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* Called by memory_region_snapshot_and_clear_dirty() and
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* memory_global_dirty_log_sync(), before accessing QEMU's "official"
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* copy of the dirty memory bitmap for a #MemoryRegionSection.
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*
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* @listener: The #MemoryListener.
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* @section: The #MemoryRegionSection.
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*/
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void (*log_sync)(MemoryListener *listener, MemoryRegionSection *section);
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/**
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* @log_clear:
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*
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* Called before reading the dirty memory bitmap for a
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* #MemoryRegionSection.
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*
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* @listener: The #MemoryListener.
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* @section: The #MemoryRegionSection.
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*/
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void (*log_clear)(MemoryListener *listener, MemoryRegionSection *section);
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/**
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* @log_global_start:
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*
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* Called by memory_global_dirty_log_start(), which
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* enables the %DIRTY_LOG_MIGRATION client on all memory regions in
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* the address space. #MemoryListener.log_global_start() is also
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* called when a #MemoryListener is added, if global dirty logging is
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* active at that time.
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*
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* @listener: The #MemoryListener.
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*/
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void (*log_global_start)(MemoryListener *listener);
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/**
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* @log_global_stop:
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*
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* Called by memory_global_dirty_log_stop(), which
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* disables the %DIRTY_LOG_MIGRATION client on all memory regions in
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* the address space.
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*
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* @listener: The #MemoryListener.
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*/
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void (*log_global_stop)(MemoryListener *listener);
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/**
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* @log_global_after_sync:
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*
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* Called after reading the dirty memory bitmap
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* for any #MemoryRegionSection.
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*
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* @listener: The #MemoryListener.
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*/
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void (*log_global_after_sync)(MemoryListener *listener);
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/**
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* @eventfd_add:
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*
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* Called during an address space update transaction,
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* for a section of the address space that has had a new ioeventfd
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* registration since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The new #MemoryRegionSection.
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* @match_data: The @match_data parameter for the new ioeventfd.
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* @data: The @data parameter for the new ioeventfd.
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* @e: The #EventNotifier parameter for the new ioeventfd.
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*/
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void (*eventfd_add)(MemoryListener *listener, MemoryRegionSection *section,
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bool match_data, uint64_t data, EventNotifier *e);
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/**
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* @eventfd_del:
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*
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* Called during an address space update transaction,
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* for a section of the address space that has dropped an ioeventfd
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* registration since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The new #MemoryRegionSection.
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* @match_data: The @match_data parameter for the dropped ioeventfd.
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* @data: The @data parameter for the dropped ioeventfd.
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* @e: The #EventNotifier parameter for the dropped ioeventfd.
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*/
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void (*eventfd_del)(MemoryListener *listener, MemoryRegionSection *section,
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bool match_data, uint64_t data, EventNotifier *e);
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/**
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* @coalesced_io_add:
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*
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* Called during an address space update transaction,
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* for a section of the address space that has had a new coalesced
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* MMIO range registration since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The new #MemoryRegionSection.
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* @addr: The starting address for the coalesced MMIO range.
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* @len: The length of the coalesced MMIO range.
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*/
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void (*coalesced_io_add)(MemoryListener *listener, MemoryRegionSection *section,
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hwaddr addr, hwaddr len);
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/**
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* @coalesced_io_del:
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*
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* Called during an address space update transaction,
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* for a section of the address space that has dropped a coalesced
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* MMIO range since the last transaction.
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*
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* @listener: The #MemoryListener.
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* @section: The new #MemoryRegionSection.
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* @addr: The starting address for the coalesced MMIO range.
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* @len: The length of the coalesced MMIO range.
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*/
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void (*coalesced_io_del)(MemoryListener *listener, MemoryRegionSection *section,
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hwaddr addr, hwaddr len);
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/* Lower = earlier (during add), later (during del) */
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/**
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* @priority:
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*
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* Govern the order in which memory listeners are invoked. Lower priorities
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* are invoked earlier for "add" or "start" callbacks, and later for "delete"
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* or "stop" callbacks.
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*/
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unsigned priority;
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/* private: */
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AddressSpace *address_space;
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QTAILQ_ENTRY(MemoryListener) link;
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QTAILQ_ENTRY(MemoryListener) link_as;
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@ -940,6 +1142,7 @@ void memory_region_init_rom(MemoryRegion *mr,
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* @mr: the #MemoryRegion to be initialized.
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* @owner: the object that tracks the region's reference count
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* @ops: callbacks for write access handling (must not be NULL).
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* @opaque: passed to the read and write callbacks of the @ops structure.
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* @name: Region name, becomes part of RAMBlock name used in migration stream
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* must be unique within any device
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* @size: size of the region.
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@ -1028,7 +1231,7 @@ static inline IOMMUMemoryRegion *memory_region_get_iommu(MemoryRegion *mr)
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* Returns pointer to IOMMUMemoryRegionClass if a memory region is an iommu,
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* otherwise NULL. This is fast path avoiding QOM checking, use with caution.
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*
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* @mr: the memory region being queried
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* @iommu_mr: the memory region being queried
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*/
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static inline IOMMUMemoryRegionClass *memory_region_get_iommu_class_nocheck(
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IOMMUMemoryRegion *iommu_mr)
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@ -1098,6 +1301,7 @@ void memory_region_notify_one(IOMMUNotifier *notifier,
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* @n: the IOMMUNotifier to be added; the notify callback receives a
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* pointer to an #IOMMUTLBEntry as the opaque value; the pointer
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* ceases to be valid on exit from the notifier.
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* @errp: pointer to Error*, to store an error if it happens.
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*/
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int memory_region_register_iommu_notifier(MemoryRegion *mr,
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IOMMUNotifier *n, Error **errp);
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@ -1270,9 +1474,12 @@ void *memory_region_get_ram_ptr(MemoryRegion *mr);
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void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize,
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Error **errp);
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/**
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* memory_region_do_writeback: Trigger writeback for selected address range
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* [addr, addr + size]
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* memory_region_do_writeback: Trigger cache writeback or msync for
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* selected address range
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*
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* @mr: the memory region to be updated
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* @addr: the initial address of the range to be written back
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* @size: the size of the range to be written back
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*/
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void memory_region_do_writeback(MemoryRegion *mr, hwaddr addr, hwaddr size);
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@ -1591,6 +1798,8 @@ void memory_region_add_subregion_overlap(MemoryRegion *mr,
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/**
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* memory_region_get_ram_addr: Get the ram address associated with a memory
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* region
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*
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* @mr: the region to be queried
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*/
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ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr);
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@ -2161,6 +2370,7 @@ static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write)
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* @addr: address within that address space
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* @attrs: memory transaction attributes
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* @buf: buffer with the data transferred
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* @len: length of the data transferred
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*/
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static inline __attribute__((__always_inline__))
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MemTxResult address_space_read(AddressSpace *as, hwaddr addr,
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