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hw/cxl/cxl-mailbox-utils: Add mailbox commands to support add/release dynamic capacity response

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Per CXL spec 3.1, two mailbox commands are implemented:
Add Dynamic Capacity Response (Opcode 4802h) 8.2.9.9.9.3, and
Release Dynamic Capacity (Opcode 4803h) 8.2.9.9.9.4.

For the process of the above two commands, we use two-pass approach.
Pass 1: Check whether the input payload is valid or not; if not, skip
        Pass 2 and return mailbox process error.
Pass 2: Do the real work--add or release extents, respectively.

Tested-by: Svetly Todorov <svetly.todorov@memverge.com>
Reviewed-by: Gregory Price <gregory.price@memverge.com>
Signed-off-by: Fan Ni <fan.ni@samsung.com>
Message-Id: <20240523174651.1089554-11-nifan.cxl@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Fan Ni 2024-05-23 10:44:50 -07:00 • committed by Michael S. Tsirkin
parent 1c9221f19e
commit 16fd1b1216
3 changed files with 409 additions and 0 deletions
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4
include/hw/cxl/cxl_device.h
View file

@ -551,4 +551,8 @@ void cxl_event_irq_assert(CXLType3Dev *ct3d);
void cxl_set_poison_list_overflowed(CXLType3Dev *ct3d);
CXLDCRegion *cxl_find_dc_region(CXLType3Dev *ct3d, uint64_t dpa, uint64_t len);
void cxl_remove_extent_from_extent_list(CXLDCExtentList *list,
CXLDCExtent *extent);
#endif