ndctl/0038-libcxl-add-support-for-the-GET_LSA-command.patch
Jeff Moyer 2c91dc1bcd Backport changes up to v74, excluding the config file changes
This includes support for the CXL commands, and adds the following
packages: cxl-cli, cxl-devel, cxl-libs.

Resolves: rhbz#2132167
2022-10-13 16:55:42 -04:00

114 lines
3.3 KiB
Diff

From c7ae078f1050ed54e254377404af2ae0879f2a39 Mon Sep 17 00:00:00 2001
From: Vishal Verma <vishal.l.verma@intel.com>
Date: Thu, 7 Oct 2021 02:21:30 -0600
Subject: [PATCH 038/217] libcxl: add support for the 'GET_LSA' command
Add a command allocator and accessor APIs for the 'GET_LSA' mailbox
command.
Cc: Ben Widawsky <ben.widawsky@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
---
cxl/lib/libcxl.c | 36 ++++++++++++++++++++++++++++++++++++
cxl/lib/libcxl.sym | 2 ++
cxl/lib/private.h | 5 +++++
cxl/libcxl.h | 4 ++++
4 files changed, 47 insertions(+)
diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c
index 065824d..76913a2 100644
--- a/cxl/lib/libcxl.c
+++ b/cxl/lib/libcxl.c
@@ -1036,6 +1036,42 @@ CXL_EXPORT struct cxl_cmd *cxl_cmd_new_raw(struct cxl_memdev *memdev,
return cmd;
}
+CXL_EXPORT struct cxl_cmd *cxl_cmd_new_read_label(struct cxl_memdev *memdev,
+ unsigned int offset, unsigned int length)
+{
+ struct cxl_cmd_get_lsa_in *get_lsa;
+ struct cxl_cmd *cmd;
+
+ cmd = cxl_cmd_new_generic(memdev, CXL_MEM_COMMAND_ID_GET_LSA);
+ if (!cmd)
+ return NULL;
+
+ get_lsa = (struct cxl_cmd_get_lsa_in *)cmd->send_cmd->in.payload;
+ get_lsa->offset = cpu_to_le32(offset);
+ get_lsa->length = cpu_to_le32(length);
+ return cmd;
+}
+
+CXL_EXPORT ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd,
+ void *buf, unsigned int length)
+{
+ struct cxl_cmd_get_lsa_in *get_lsa;
+ void *payload;
+ int rc;
+
+ rc = cxl_cmd_validate_status(cmd, CXL_MEM_COMMAND_ID_GET_LSA);
+ if (rc)
+ return rc;
+
+ get_lsa = (struct cxl_cmd_get_lsa_in *)cmd->send_cmd->in.payload;
+ if (length > le32_to_cpu(get_lsa->length))
+ return -EINVAL;
+
+ payload = (void *)cmd->send_cmd->out.payload;
+ memcpy(buf, payload, length);
+ return length;
+}
+
CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd)
{
struct cxl_memdev *memdev = cmd->memdev;
diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym
index c83bc28..629322c 100644
--- a/cxl/lib/libcxl.sym
+++ b/cxl/lib/libcxl.sym
@@ -62,6 +62,8 @@ global:
cxl_cmd_health_info_get_dirty_shutdowns;
cxl_cmd_health_info_get_volatile_errors;
cxl_cmd_health_info_get_pmem_errors;
+ cxl_cmd_new_read_label;
+ cxl_cmd_read_label_get_payload;
local:
*;
};
diff --git a/cxl/lib/private.h b/cxl/lib/private.h
index 885553a..bf3a897 100644
--- a/cxl/lib/private.h
+++ b/cxl/lib/private.h
@@ -73,6 +73,11 @@ struct cxl_cmd_identify {
u8 qos_telemetry_caps;
} __attribute__((packed));
+struct cxl_cmd_get_lsa_in {
+ le32 offset;
+ le32 length;
+} __attribute__((packed));
+
struct cxl_cmd_get_health_info {
u8 health_status;
u8 media_status;
diff --git a/cxl/libcxl.h b/cxl/libcxl.h
index eae2db8..7408745 100644
--- a/cxl/libcxl.h
+++ b/cxl/libcxl.h
@@ -95,6 +95,10 @@ int cxl_cmd_health_info_get_temperature(struct cxl_cmd *cmd);
int cxl_cmd_health_info_get_dirty_shutdowns(struct cxl_cmd *cmd);
int cxl_cmd_health_info_get_volatile_errors(struct cxl_cmd *cmd);
int cxl_cmd_health_info_get_pmem_errors(struct cxl_cmd *cmd);
+struct cxl_cmd *cxl_cmd_new_read_label(struct cxl_memdev *memdev,
+ unsigned int offset, unsigned int length);
+ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, void *buf,
+ unsigned int length);
#ifdef __cplusplus
} /* extern "C" */
--
2.27.0