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tools/testing/cxl: Mock the Clear Poison mailbox command

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Mock the clear of poison by deleting the device:address entry from
the mock_poison_list[]. Behave like a real CXL device and do not fail
if the address is not in the poison list, but offer a dev_dbg()
message.

Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/ecf19743c6572e60971bbd078f67d520cf5bca5d.1681874357.git.alison.schofield@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Alison Schofield
2023-04-18 20:26:31 -07:00
committed by Dan Williams
parent 371c16101e
commit 6ec4b6d23e
1 changed files with 36 additions and 0 deletions
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tools/testing/cxl/test/mem.c
+36
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@@ -52,6 +52,10 @@ static struct cxl_cel_entry mock_cel[] = {
.opcode = cpu_to_le16(CXL_MBOX_OP_INJECT_POISON),
.effect = cpu_to_le16(0),
},
{
.opcode = cpu_to_le16(CXL_MBOX_OP_CLEAR_POISON),
.effect = cpu_to_le16(0),
},
};
/* See CXL 2.0 Table 181 Get Health Info Output Payload */
@@ -997,6 +1001,35 @@ static int mock_inject_poison(struct cxl_dev_state *cxlds,
return 0;
}
static bool mock_poison_del(struct cxl_dev_state *cxlds, u64 dpa)
{
for (int i = 0; i < MOCK_INJECT_TEST_MAX; i++) {
if (mock_poison_list[i].cxlds == cxlds &&
mock_poison_list[i].dpa == dpa) {
mock_poison_list[i].cxlds = NULL;
return true;
}
}
return false;
}
static int mock_clear_poison(struct cxl_dev_state *cxlds,
struct cxl_mbox_cmd *cmd)
{
struct cxl_mbox_clear_poison *pi = cmd->payload_in;
u64 dpa = le64_to_cpu(pi->address);
/*
* A real CXL device will write pi->write_data to the address
* being cleared. In this mock, just delete this address from
* the mock poison list.
*/
if (!mock_poison_del(cxlds, dpa))
dev_dbg(cxlds->dev, "DPA: 0x%llx not in poison list\n", dpa);
return 0;
}
static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
{
struct device *dev = cxlds->dev;
@@ -1057,6 +1090,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *
case CXL_MBOX_OP_INJECT_POISON:
rc = mock_inject_poison(cxlds, cmd);
break;
case CXL_MBOX_OP_CLEAR_POISON:
rc = mock_clear_poison(cxlds, cmd);
break;
default:
break;
}