diff options
| author | Fan Ni <fan.ni@samsung.com> | 2024-05-23 10:44:50 -0700 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-07-01 17:16:04 -0400 |
| commit | 16fd1b1216a2895a7995345ad6630151954c43a3 (patch) | |
| tree | 31e45eece94725a5c888f902bd9cdb1a69029585 /hw/mem | |
| parent | 1c9221f19e62e448a9ca71a2d5c8a369102a0c38 (diff) | |
hw/cxl/cxl-mailbox-utils: Add mailbox commands to support add/release dynamic capacity response
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>
Diffstat (limited to 'hw/mem')
| -rw-r--r-- | hw/mem/cxl_type3.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index 2075846b1b..db5191b3b7 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -678,6 +678,15 @@ static bool cxl_create_dc_regions(CXLType3Dev *ct3d, Error **errp) return true; } +static void cxl_destroy_dc_regions(CXLType3Dev *ct3d) +{ + CXLDCExtent *ent, *ent_next; + + QTAILQ_FOREACH_SAFE(ent, &ct3d->dc.extents, node, ent_next) { + cxl_remove_extent_from_extent_list(&ct3d->dc.extents, ent); + } +} + static bool cxl_setup_memory(CXLType3Dev *ct3d, Error **errp) { DeviceState *ds = DEVICE(ct3d); @@ -874,6 +883,7 @@ err_free_special_ops: g_free(regs->special_ops); err_address_space_free: if (ct3d->dc.host_dc) { + cxl_destroy_dc_regions(ct3d); address_space_destroy(&ct3d->dc.host_dc_as); } if (ct3d->hostpmem) { @@ -895,6 +905,7 @@ static void ct3_exit(PCIDevice *pci_dev) cxl_doe_cdat_release(cxl_cstate); g_free(regs->special_ops); if (ct3d->dc.host_dc) { + cxl_destroy_dc_regions(ct3d); address_space_destroy(&ct3d->dc.host_dc_as); } if (ct3d->hostpmem) { |