lkml.org 
[lkml]   [2022]   [Dec]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 5/5] tools/testing/cxl: Mock support for Get Poison List
Date
From: Alison Schofield <alison.schofield@intel.com>

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.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Alison Schofield <alison.schofield@intel.com>
---
tools/testing/cxl/test/mem.c | 42 ++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)

diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
index 5e4ecd93f1d2..9bbbad083ede 100644
--- a/tools/testing/cxl/test/mem.c
+++ b/tools/testing/cxl/test/mem.c
@@ -7,6 +7,7 @@
#include <linux/delay.h>
#include <linux/sizes.h>
#include <linux/bits.h>
+#include <asm/unaligned.h>
#include <cxlmem.h>

#define LSA_SIZE SZ_128K
@@ -38,6 +39,10 @@ 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 */
@@ -141,6 +146,8 @@ 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;

@@ -558,6 +565,34 @@ 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_payload_in *pi = cmd->payload_in;
+
+ /* Mock one poison record at pi.offset for 64 bytes */
+ struct {
+ struct cxl_mbox_poison_payload_out po;
+ struct cxl_poison_record record;
+ } mock_plist = {
+ .po = {
+ .count = cpu_to_le16(1),
+ },
+ .record = {
+ .length = cpu_to_le32(1),
+ .address = cpu_to_le64(pi->offset |
+ CXL_POISON_SOURCE_INTERNAL),
+ },
+ };
+
+ 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;
@@ -606,6 +641,9 @@ 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;
}
@@ -664,6 +702,10 @@ 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;
--
2.37.3
\
 
 \ /
  Last update: 2022-12-15 22:20    [W:0.201 / U:0.136 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site