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hw/cxl: Add clear poison mailbox command support.

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Current implementation is very simple so many of the corner
cases do not exist (e.g. fragmenting larger poison list entries)

Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230526170010.574-5-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jonathan Cameron 2023-05-26 18:00:10 +01:00 • committed by Michael S. Tsirkin
parent ff04b207a0
commit 6bda41a69b
3 changed files with 120 additions and 0 deletions
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37
hw/mem/cxl_type3.c
View file

@ -947,6 +947,42 @@ static void set_lsa(CXLType3Dev *ct3d, const void *buf, uint64_t size,
*/
}
static bool set_cacheline(CXLType3Dev *ct3d, uint64_t dpa_offset, uint8_t *data)
{
MemoryRegion *vmr = NULL, *pmr = NULL;
AddressSpace *as;
if (ct3d->hostvmem) {
vmr = host_memory_backend_get_memory(ct3d->hostvmem);
}
if (ct3d->hostpmem) {
pmr = host_memory_backend_get_memory(ct3d->hostpmem);
}
if (!vmr && !pmr) {
return false;
}
if (dpa_offset + CXL_CACHE_LINE_SIZE > ct3d->cxl_dstate.mem_size) {
return false;
}
if (vmr) {
if (dpa_offset < memory_region_size(vmr)) {
as = &ct3d->hostvmem_as;
} else {
as = &ct3d->hostpmem_as;
dpa_offset -= memory_region_size(vmr);
}
} else {
as = &ct3d->hostpmem_as;
}
address_space_write(as, dpa_offset, MEMTXATTRS_UNSPECIFIED, &data,
CXL_CACHE_LINE_SIZE);
return true;
}
void cxl_set_poison_list_overflowed(CXLType3Dev *ct3d)
{
ct3d->poison_list_overflowed = true;
@ -1168,6 +1204,7 @@ static void ct3_class_init(ObjectClass *oc, void *data)
cvc->get_lsa_size = get_lsa_size;
cvc->get_lsa = get_lsa;
cvc->set_lsa = set_lsa;
cvc->set_cacheline = set_cacheline;
}
static const TypeInfo ct3d_info = {