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tools/testing/cxl: Mock support for Get Poison List

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Make mock memdevs support the Get Poison List mailbox command.
Return a fake poison error record when the get poison list command
is issued.

This supports testing the kernel tracing and cxl list capabilities
for media errors.

Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/14d661ce3e3a32b7d8e76b8ecc5eb88343b3d09c.1681838292.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 10:39:09 -07:00 committed by Dan Williams
parent 28a3ae4ff6
commit f8d22bf50c
1 changed files with 42 additions and 0 deletions
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42
tools/testing/cxl/test/mem.c
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@ -7,6 +7,7 @@
#include <linux/delay.h>
#include <linux/sizes.h>
#include <linux/bits.h>
#include <asm/unaligned.h>
#include <cxlmem.h>
#include "trace.h"
@ -40,6 +41,10 @@ static struct cxl_cel_entry mock_cel[] = {
.opcode = cpu_to_le16(CXL_MBOX_OP_GET_HEALTH_INFO),
.effect = cpu_to_le16(0),
},
{
.opcode = cpu_to_le16(CXL_MBOX_OP_GET_POISON),
.effect = cpu_to_le16(0),
},
};
/* See CXL 2.0 Table 181 Get Health Info Output Payload */
@ -471,6 +476,8 @@ static int mock_id(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
cpu_to_le64(DEV_SIZE / CXL_CAPACITY_MULTIPLIER),
};
put_unaligned_le24(CXL_POISON_LIST_MAX, id.poison_list_max_mer);
if (cmd->size_out < sizeof(id))
return -EINVAL;
@ -888,6 +895,34 @@ static int mock_health_info(struct cxl_dev_state *cxlds,
return 0;
}
static int mock_get_poison(struct cxl_dev_state *cxlds,
struct cxl_mbox_cmd *cmd)
{
struct cxl_mbox_poison_in *pi = cmd->payload_in;
/* Mock one poison record at pi.offset for 64 bytes */
struct {
struct cxl_mbox_poison_out po;
struct cxl_poison_record record;
} __packed mock_plist = {
.po = {
.count = cpu_to_le16(1),
},
.record = {
.length = cpu_to_le32(1),
.address = cpu_to_le64(le64_to_cpu(pi->offset) +
CXL_POISON_SOURCE_INJECTED),
},
};
if (cmd->size_out < sizeof(mock_plist))
return -EINVAL;
memcpy(cmd->payload_out, &mock_plist, sizeof(mock_plist));
cmd->size_out = sizeof(mock_plist);
return 0;
}
static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
{
struct device *dev = cxlds->dev;
@ -942,6 +977,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *
case CXL_MBOX_OP_PASSPHRASE_SECURE_ERASE:
rc = mock_passphrase_secure_erase(cxlds, cmd);
break;
case CXL_MBOX_OP_GET_POISON:
rc = mock_get_poison(cxlds, cmd);
break;
default:
break;
}
@ -1010,6 +1048,10 @@ static int cxl_mock_mem_probe(struct platform_device *pdev)
if (rc)
return rc;
rc = cxl_poison_state_init(cxlds);
if (rc)
return rc;
rc = cxl_dev_state_identify(cxlds);
if (rc)
return rc;