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Thu, 23 Nov 2023 17:44:05 +0000 From: To: , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 03/11] cxl/mbox: Add SET_FEATURE mailbox command Date: Fri, 24 Nov 2023 01:43:46 +0800 Message-ID: <20231123174355.1176-4-shiju.jose@huawei.com> X-Mailer: git-send-email 2.35.1.windows.2 In-Reply-To: <20231123174355.1176-1-shiju.jose@huawei.com> References: <20231123174355.1176-1-shiju.jose@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.234] X-ClientProxiedBy: lhrpeml100003.china.huawei.com (7.191.160.210) To lhrpeml500006.china.huawei.com (7.191.161.198) X-CFilter-Loop: Reflected X-Rspam-User: X-Stat-Signature: uwety91gfbx6hoy5uddp6jc75t8wnd33 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: E9A5D40009 X-HE-Tag: 1700761449-651207 X-HE-Meta: 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 Ieikhqh4 7rM1Q3TEjeLY8hyXxi+xIAstv8f4F1wr6mRnW10mg41o7ZQuiUggvzH/JzXt0ryTJaCTu4B/09kb/UiDjDGwnhXGoPsSrfT3k1Y/4T+77YbYfcSkqHmbjSliafFKOUfBPaZQL/Ju+eyjNoLdPmA77EnuFNdw4TQeM8mISxREV4BFOcj7m84rhsrQsGZN6nphrJN1pQaW8UIv1IViK5SwS9X4dUb1vFvkNI/VDmisCKArY7to= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Shiju Jose Add support for SET_FEATURE mailbox command. CXL spec 3.0 section 8.2.9.6 describes optional device specific features. CXL devices supports features with changeable attributes. The settings of a feature can be optionally modified using Set Feature command. Signed-off-by: Shiju Jose --- drivers/cxl/core/mbox.c | 14 ++++++++++++++ drivers/cxl/cxlmem.h | 27 +++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index 759b7e7e6a09..e8aecf038a6d 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -1348,6 +1348,20 @@ int cxl_get_feature(struct cxl_memdev_state *mds, } EXPORT_SYMBOL_NS_GPL(cxl_get_feature, CXL); +int cxl_set_feature(struct cxl_memdev_state *mds, void *feat_in, size_t size) +{ + struct cxl_mbox_cmd mbox_cmd; + + mbox_cmd = (struct cxl_mbox_cmd) { + .opcode = CXL_MBOX_OP_SET_FEATURE, + .size_in = size, + .payload_in = feat_in, + }; + + return cxl_internal_send_cmd(mds, &mbox_cmd); +} +EXPORT_SYMBOL_NS_GPL(cxl_set_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 92c1f2a44713..46131dcd0900 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -508,6 +508,7 @@ enum cxl_opcode { CXL_MBOX_OP_GET_LOG = 0x0401, CXL_MBOX_OP_GET_SUPPORTED_FEATURES = 0x0500, CXL_MBOX_OP_GET_FEATURE = 0x0501, + CXL_MBOX_OP_SET_FEATURE = 0x0502, CXL_MBOX_OP_IDENTIFY = 0x4000, CXL_MBOX_OP_GET_PARTITION_INFO = 0x4100, CXL_MBOX_OP_SET_PARTITION_INFO = 0x4101, @@ -817,6 +818,31 @@ struct cxl_mbox_get_feat_in { u8 selection; } __packed; +/* Set Feature CXL 3.0 Spec 8.2.9.6.3 */ +/* + * Set Feature input payload + * CXL rev 3.0 section 8.2.9.6.3; Table 8-81 + */ +/* Set Feature : Payload in flags */ +#define CXL_SET_FEAT_FLAG_DATA_TRANSFER_MASK GENMASK(2, 0) +enum cxl_set_feat_flag_data_transfer { + CXL_SET_FEAT_FLAG_FULL_DATA_TRANSFER = 0x0, + CXL_SET_FEAT_FLAG_INITIATE_DATA_TRANSFER = 0x1, + CXL_SET_FEAT_FLAG_CONTINUE_DATA_TRANSFER = 0x2, + CXL_SET_FEAT_FLAG_FINISH_DATA_TRANSFER = 0x3, + CXL_SET_FEAT_FLAG_ABORT_DATA_TRANSFER = 0x4, + CXL_SET_FEAT_FLAG_DATA_TRANSFER_MAX +}; +#define CXL_SET_FEAT_FLAG_MOD_VALUE_SAVED_ACROSS_RESET BIT(3) + +struct cxl_mbox_set_feat_in { + uuid_t uuid; + __le32 flags; + __le16 offset; + u8 version; + u8 rsvd[9]; +} __packed; + /* Get Poison List CXL 3.0 Spec 8.2.9.8.4.1 */ struct cxl_mbox_poison_in { __le64 offset; @@ -949,6 +975,7 @@ int cxl_get_supported_features(struct cxl_memdev_state *mds, void *feats_out); int cxl_get_feature(struct cxl_memdev_state *mds, struct cxl_mbox_get_feat_in *pi, void *feat_out); +int cxl_set_feature(struct cxl_memdev_state *mds, void *feat_in, size_t size); 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);