From: <shiju.jose@huawei.com>
To: <linux-cxl@vger.kernel.org>, <linux-acpi@vger.kernel.org>,
<linux-mm@kvack.org>, <dan.j.williams@intel.com>,
<dave@stgolabs.net>, <jonathan.cameron@huawei.com>,
<dave.jiang@intel.com>, <alison.schofield@intel.com>,
<vishal.l.verma@intel.com>, <ira.weiny@intel.com>
Cc: <linux-edac@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<david@redhat.com>, <Vilas.Sridharan@amd.com>,
<leo.duran@amd.com>, <Yazen.Ghannam@amd.com>,
<rientjes@google.com>, <jiaqiyan@google.com>,
<tony.luck@intel.com>, <Jon.Grimm@amd.com>,
<dave.hansen@linux.intel.com>, <rafael@kernel.org>,
<lenb@kernel.org>, <naoya.horiguchi@nec.com>,
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<tanxiaofei@huawei.com>, <prime.zeng@hisilicon.com>,
<kangkang.shen@futurewei.com>, <wanghuiqiang@huawei.com>,
<linuxarm@huawei.com>, <shiju.jose@huawei.com>
Subject: [RFC PATCH v6 02/12] cxl/mbox: Add GET_FEATURE mailbox command
Date: Thu, 15 Feb 2024 19:14:44 +0800 [thread overview]
Message-ID: <20240215111455.1462-3-shiju.jose@huawei.com> (raw)
In-Reply-To: <20240215111455.1462-1-shiju.jose@huawei.com>
From: Shiju Jose <shiju.jose@huawei.com>
Add support for GET_FEATURE mailbox command.
CXL spec 3.1 section 8.2.9.6 describes optional device specific features.
The settings of a feature can be retrieved using Get Feature command.
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
---
drivers/cxl/core/mbox.c | 22 ++++++++++++++++++++++
drivers/cxl/cxlmem.h | 23 +++++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index 191f51f3df0e..f43189b6859a 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -1313,6 +1313,28 @@ int cxl_get_supported_features(struct cxl_memdev_state *mds,
}
EXPORT_SYMBOL_NS_GPL(cxl_get_supported_features, CXL);
+int cxl_get_feature(struct cxl_memdev_state *mds,
+ struct cxl_mbox_get_feat_in *pi, void *feat_out)
+{
+ struct cxl_mbox_cmd mbox_cmd;
+ int rc;
+
+ mbox_cmd = (struct cxl_mbox_cmd) {
+ .opcode = CXL_MBOX_OP_GET_FEATURE,
+ .size_in = sizeof(*pi),
+ .payload_in = pi,
+ .size_out = le16_to_cpu(pi->count),
+ .payload_out = feat_out,
+ .min_out = le16_to_cpu(pi->count),
+ };
+ rc = cxl_internal_send_cmd(mds, &mbox_cmd);
+ if (rc < 0)
+ return rc;
+
+ return 0;
+}
+EXPORT_SYMBOL_NS_GPL(cxl_get_feature, CXL);
+
int cxl_mem_get_poison(struct cxl_memdev *cxlmd, u64 offset, u64 len,
struct cxl_region *cxlr)
{
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h
index 23e4d98b9bae..eaecc3234cfd 100644
--- a/drivers/cxl/cxlmem.h
+++ b/drivers/cxl/cxlmem.h
@@ -530,6 +530,7 @@ enum cxl_opcode {
CXL_MBOX_OP_GET_SUPPORTED_LOGS = 0x0400,
CXL_MBOX_OP_GET_LOG = 0x0401,
CXL_MBOX_OP_GET_SUPPORTED_FEATURES = 0x0500,
+ CXL_MBOX_OP_GET_FEATURE = 0x0501,
CXL_MBOX_OP_IDENTIFY = 0x4000,
CXL_MBOX_OP_GET_PARTITION_INFO = 0x4100,
CXL_MBOX_OP_SET_PARTITION_INFO = 0x4101,
@@ -757,6 +758,26 @@ struct cxl_mbox_get_supp_feats_out {
struct cxl_mbox_supp_feat_entry feat_entries[];
} __packed;
+/* Get Feature CXL 3.1 Spec 8.2.9.6.2 */
+/*
+ * Get Feature input payload
+ * CXL rev 3.1 section 8.2.9.6.2 Table 8-99
+ */
+/* Get Feature : Payload in selection */
+enum cxl_get_feat_selection {
+ CXL_GET_FEAT_SEL_CURRENT_VALUE,
+ CXL_GET_FEAT_SEL_DEFAULT_VALUE,
+ CXL_GET_FEAT_SEL_SAVED_VALUE,
+ CXL_GET_FEAT_SEL_MAX
+};
+
+struct cxl_mbox_get_feat_in {
+ uuid_t uuid;
+ __le16 offset;
+ __le16 count;
+ u8 selection;
+} __packed;
+
/* Get Poison List CXL 3.0 Spec 8.2.9.8.4.1 */
struct cxl_mbox_poison_in {
__le64 offset;
@@ -891,6 +912,8 @@ int cxl_set_timestamp(struct cxl_memdev_state *mds);
int cxl_get_supported_features(struct cxl_memdev_state *mds,
struct cxl_mbox_get_supp_feats_in *pi,
void *feats_out);
+int cxl_get_feature(struct cxl_memdev_state *mds,
+ struct cxl_mbox_get_feat_in *pi, void *feat_out);
int cxl_poison_state_init(struct cxl_memdev_state *mds);
int cxl_mem_get_poison(struct cxl_memdev *cxlmd, u64 offset, u64 len,
struct cxl_region *cxlr);
--
2.34.1
next prev parent reply other threads:[~2024-02-15 11:15 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-15 11:14 [RFC PATCH v6 00/12] cxl: Add support for CXL feature commands, CXL device patrol scrub control and DDR5 ECS control features shiju.jose
2024-02-15 11:14 ` [RFC PATCH v6 01/12] cxl/mbox: Add GET_SUPPORTED_FEATURES mailbox command shiju.jose
2024-02-20 11:02 ` Jonathan Cameron
2024-03-05 23:57 ` fan
2024-02-15 11:14 ` shiju.jose [this message]
2024-02-20 11:14 ` [RFC PATCH v6 02/12] cxl/mbox: Add GET_FEATURE " Jonathan Cameron
2024-02-23 12:23 ` Shiju Jose
2024-02-15 11:14 ` [RFC PATCH v6 03/12] cxl/mbox: Add SET_FEATURE " shiju.jose
2024-02-20 11:27 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 04/12] cxl/memscrub: Add CXL device patrol scrub control feature shiju.jose
2024-02-20 11:59 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 05/12] cxl/memscrub: Add CXL device ECS " shiju.jose
2024-02-20 12:17 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 06/12] memory: scrub: Add scrub subsystem driver supports configuring memory scrubs in the system shiju.jose
2024-02-20 12:39 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 07/12] cxl/memscrub: Register CXL device patrol scrub with scrub configure driver shiju.jose
2024-02-20 12:43 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 08/12] cxl/memscrub: Register CXL device ECS " shiju.jose
2024-02-20 13:39 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 09/12] ACPI:RASF: Add common library for RASF and RAS2 PCC interfaces shiju.jose
2024-02-20 13:53 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 10/12] ACPICA: ACPI 6.5: Add support for RAS2 table shiju.jose
2024-02-20 13:58 ` Jonathan Cameron
2024-02-15 11:14 ` [RFC PATCH v6 11/12] ACPI:RAS2: Add driver for ACPI RAS2 feature table (RAS2) shiju.jose
2024-02-15 11:14 ` [RFC PATCH v6 12/12] memory: RAS2: Add memory RAS2 driver shiju.jose
2024-02-20 16:12 ` Jonathan Cameron
2024-02-22 0:20 ` [RFC PATCH v6 00/12] cxl: Add support for CXL feature commands, CXL device patrol scrub control and DDR5 ECS control features Dan Williams
2024-02-23 12:16 ` Shiju Jose
2024-02-23 19:42 ` Dan Williams
2024-02-26 10:29 ` Jonathan Cameron
2024-02-29 19:51 ` Dan Williams
2024-03-01 14:41 ` Jonathan Cameron
2024-03-05 0:52 ` Jiaqi Yan
2024-02-29 20:41 ` Tony Luck
2024-03-01 13:19 ` Jonathan Cameron
2024-02-28 22:26 ` John Groves
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