diff options
Diffstat (limited to 'hw/cxl/cxl-mailbox-utils.c')
| -rw-r--r-- | hw/cxl/cxl-mailbox-utils.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 702e16ca20..1f74b26ea2 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -62,6 +62,8 @@ enum { #define GET_PARTITION_INFO 0x0 #define GET_LSA 0x2 #define SET_LSA 0x3 + MEDIA_AND_POISON = 0x43, + #define GET_POISON_LIST 0x0 }; /* 8.2.8.4.5.1 Command Return Codes */ @@ -295,6 +297,10 @@ static CXLRetCode cmd_identify_memory_device(struct cxl_cmd *cmd, stq_le_p(&id->persistent_capacity, cxl_dstate->pmem_size / CXL_CAPACITY_MULTIPLIER); stq_le_p(&id->volatile_capacity, cxl_dstate->vmem_size / CXL_CAPACITY_MULTIPLIER); stl_le_p(&id->lsa_size, cvc->get_lsa_size(ct3d)); + /* 256 poison records */ + st24_le_p(id->poison_list_max_mer, 256); + /* No limit - so limited by main poison record limit */ + stw_le_p(&id->inject_poison_limit, 0); *len = sizeof(*id); return CXL_MBOX_SUCCESS; @@ -384,6 +390,88 @@ static CXLRetCode cmd_ccls_set_lsa(struct cxl_cmd *cmd, return CXL_MBOX_SUCCESS; } +/* + * This is very inefficient, but good enough for now! + * Also the payload will always fit, so no need to handle the MORE flag and + * make this stateful. We may want to allow longer poison lists to aid + * testing that kernel functionality. + */ +static CXLRetCode cmd_media_get_poison_list(struct cxl_cmd *cmd, + CXLDeviceState *cxl_dstate, + uint16_t *len) +{ + struct get_poison_list_pl { + uint64_t pa; + uint64_t length; + } QEMU_PACKED; + + struct get_poison_list_out_pl { + uint8_t flags; + uint8_t rsvd1; + uint64_t overflow_timestamp; + uint16_t count; + uint8_t rsvd2[0x14]; + struct { + uint64_t addr; + uint32_t length; + uint32_t resv; + } QEMU_PACKED records[]; + } QEMU_PACKED; + + struct get_poison_list_pl *in = (void *)cmd->payload; + struct get_poison_list_out_pl *out = (void *)cmd->payload; + CXLType3Dev *ct3d = container_of(cxl_dstate, CXLType3Dev, cxl_dstate); + uint16_t record_count = 0, i = 0; + uint64_t query_start, query_length; + CXLPoisonList *poison_list = &ct3d->poison_list; + CXLPoison *ent; + uint16_t out_pl_len; + + query_start = ldq_le_p(&in->pa); + /* 64 byte alignemnt required */ + if (query_start & 0x3f) { + return CXL_MBOX_INVALID_INPUT; + } + query_length = ldq_le_p(&in->length) * CXL_CACHE_LINE_SIZE; + + QLIST_FOREACH(ent, poison_list, node) { + /* Check for no overlap */ + if (ent->start >= query_start + query_length || + ent->start + ent->length <= query_start) { + continue; + } + record_count++; + } + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); + assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE); + + memset(out, 0, out_pl_len); + QLIST_FOREACH(ent, poison_list, node) { + uint64_t start, stop; + + /* Check for no overlap */ + if (ent->start >= query_start + query_length || + ent->start + ent->length <= query_start) { + continue; + } + + /* Deal with overlap */ + start = MAX(ROUND_DOWN(ent->start, 64ull), query_start); + stop = MIN(ROUND_DOWN(ent->start, 64ull) + ent->length, + query_start + query_length); + stq_le_p(&out->records[i].addr, start | (ent->type & 0x7)); + stl_le_p(&out->records[i].length, (stop - start) / CXL_CACHE_LINE_SIZE); + i++; + } + if (ct3d->poison_list_overflowed) { + out->flags = (1 << 1); + stq_le_p(&out->overflow_timestamp, ct3d->poison_list_overflow_ts); + } + stw_le_p(&out->count, record_count); + *len = out_pl_len; + return CXL_MBOX_SUCCESS; +} + #define IMMEDIATE_CONFIG_CHANGE (1 << 1) #define IMMEDIATE_DATA_CHANGE (1 << 2) #define IMMEDIATE_POLICY_CHANGE (1 << 3) @@ -411,6 +499,8 @@ static struct cxl_cmd cxl_cmd_set[256][256] = { [CCLS][GET_LSA] = { "CCLS_GET_LSA", cmd_ccls_get_lsa, 8, 0 }, [CCLS][SET_LSA] = { "CCLS_SET_LSA", cmd_ccls_set_lsa, ~0, IMMEDIATE_CONFIG_CHANGE | IMMEDIATE_DATA_CHANGE }, + [MEDIA_AND_POISON][GET_POISON_LIST] = { "MEDIA_AND_POISON_GET_POISON_LIST", + cmd_media_get_poison_list, 16, 0 }, }; void cxl_process_mailbox(CXLDeviceState *cxl_dstate) |