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Thu, 20 Feb 2025 14:28:39 +0900 (KST) Received: from epsmtrp1.samsung.com (unknown [182.195.40.13]) by epcas5p2.samsung.com (KnoxPortal) with ESMTPA id 20250220052734epcas5p2c0e082880350b5fa314c9062294bbc80~l02Nhs-9x2074720747epcas5p2v; Thu, 20 Feb 2025 05:27:34 +0000 (GMT) Received: from epsmgmc1p1new.samsung.com (unknown [182.195.42.40]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20250220052734epsmtrp1385e02993de9e0ac5d432c202b2a77c8~l02Ng5faI1160311603epsmtrp1J; Thu, 20 Feb 2025 05:27:34 +0000 (GMT) X-AuditID: b6c32a44-36bdd70000004cfe-35-67b6bd871651 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgmc1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 9E.BA.23488.64DB6B76; Thu, 20 Feb 2025 14:27:34 +0900 (KST) Received: from test-PowerEdge-R740xd.samsungds.net (unknown [107.99.41.79]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250220052733epsmtip2ab7287c3d7e346091badd88152e6002e~l02MGR0jj1496914969epsmtip2S; Thu, 20 Feb 2025 05:27:33 +0000 (GMT) From: Vinayak Holikatti To: qemu-devel@nongnu.org Cc: gost.dev@samsung.com, linux-cxl@vger.kernel.org, nifan.cxl@gmail.com, dave@stgolabs.net, vishak.g@samsung.com, krish.reddy@samsung.com, a.manzanares@samsung.com, alok.rathore@samsung.com, Vinayak Holikatti Subject: [PATCH v3 1/3] hw/cxl/cxl-mailbox-utils: Add support for Media operations discovery commands cxl r3.2 (8.2.10.9.5.3) Date: Thu, 20 Feb 2025 10:57:22 +0530 Message-Id: <20250220052724.1256642-2-vinayak.kh@samsung.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250220052724.1256642-1-vinayak.kh@samsung.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprNJsWRmVeSWpSXmKPExsWy7bCmhm773m3pBouPmFtMP6xo8eX0HjaL 1TfXMFrcPLCTyWLhxmVMFudnnWKx+LttL6PF8d4dLBYnTm5nB4rNYXfg8tg56y67x5Nrm5k8 +rasYvSYOrve4/MmuQDWqGybjNTElNQihdS85PyUzLx0WyXv4HjneFMzA0NdQ0sLcyWFvMTc VFslF58AXbfMHKCblBTKEnNKgUIBicXFSvp2NkX5pSWpChn5xSW2SqkFKTkFJgV6xYm5xaV5 6Xp5qSVWhgYGRqZAhQnZGZ9+/WQuuGJQcbV9O0sD41KlLkZODgkBE4nbNw+ydzFycQgJ7GaU 2Pb6GSOE84lR4sKeVSwgVUIC3xglTh/WgOnYPredBaJoL6PEg/5rbBBFDUwSd38lgdhsAgYS D5qPs4PYIgKSEr+7TjOD2MwCHxglFj3VBbGFBeol3rd2gC1gEVCV+Hv1LNgcXgFbiVWN3YwQ y+Ql9h88C9bLKWAnse/pdHaIGkGJkzOfsEDMlJdo3jqbGeQgCYGf7BJzJ31hgmh2kVh74yYr hC0s8er4FnYIW0riZX8blF0sce7iJ6hlNRKvu1YwQ9j2Eq2n+oFsDqAFmhLrd+lDhGUlpp5a xwSxl0+i9/cTqFW8EjvmgdgcQLaKxNK3mTCbvjxrhpruIXG/awczJNwmAoPh7B3mCYwKs5C8 MwvJO7MQNi9gZF7FKJlaUJybnppsWmCYl1oOj+Pk/NxNjOBUquWyg/HG/H96hxiZOBgPMUpw MCuJ8LbVb0kX4k1JrKxKLcqPLyrNSS0+xGgKDO+JzFKiyfnAZJ5XEm9oYmlgYmZmZmJpbGao JM7bvLMlXUggPbEkNTs1tSC1CKaPiYNTqoFp5+uIHe9Tfsbnnzvs8K8syT7PbeG2w8cnigtV 6r3bJF/wwPn8/dww1S+HN7mYXop+/m2S+fqbbJy3P/MlsfX2C5pE7rq3ZcOPyXruVebVszkv X6td71CgbWCwnUE4+Gpv4CnV8o/rV/pvvx2UpGpqnjNRo9RD0W2tsuUf9YuS0jVf3D9Fq2Vv 2T4n00BNzkhF20RVoV2pJex36wez2JsFZRmx0fLqxtHr3SfOfh3B80LuKuuy9S9vSDmuarwQ fULj9+fre47N5n/W9oxBcXXtjPiE72/NZi89VLcoIu20+sZ1ZxdqXF4w/Q3LYxWeRze9b1lO cOfKXm2vLLiqJ/uWuVMLJ9/Fn3fsPfdXM09SYinOSDTUYi4qTgQAxsK14i4EAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrKLMWRmVeSWpSXmKPExsWy7bCSvK7b3m3pBl/m61lMP6xo8eX0HjaL 1TfXMFrcPLCTyWLhxmVMFudnnWKx+LttL6PF8d4dLBYnTm5nB4rNYXfg8tg56y67x5Nrm5k8 +rasYvSYOrve4/MmuQDWKC6blNSczLLUIn27BK6MT79+MhdcMai42r6dpYFxqVIXIyeHhICJ xPa57SxdjFwcQgK7GSW27Z/MDpGQkji28ycbhC0ssfLfc3aIon+MEg/vdzOCJNgEDCQeNB8H axARkJT43XWaGaSIWeAXo8TT3ffBEsICtRILN3xlArFZBFQl/l49CzaVV8BWYlUjxCAJAXmJ /QfPMoPYnAJ2EvueTgfrFQKqWdJ/GqpeUOLkzCcsIDYzUH3z1tnMExgFZiFJzUKSWsDItIpR MrWgODc9N9mwwDAvtVyvODG3uDQvXS85P3cTIzjktTR2ML771qR/iJGJg/EQowQHs5IIb1v9 lnQh3pTEyqrUovz4otKc1OJDjNIcLErivCsNI9KFBNITS1KzU1MLUotgskwcnFINTJrfRFVt SisbxPj4Xmw9c/eewu1jeb0PI6edbHyS1XL/mofpywuNvFkGqXwrOt3nRMr90HTsVOuye7vP 3vXpSstgseV/Em92f37KrvvdqUj7iHp9RTXf0xXtx7gMPpR+4rRLyttRW2cxNTF160TL5GxL 97N7v4QXPJ7km6C/eF5xWIzHDI6rXAX+TyXO18m/iuVdzxi/wl9a1/L4tevvFyjva79pZjeH mSnvyLzFHw9pOhYGpf4Ic3+wjP+Near5i4tFj/v96pTX+R6Qu7BA8eaPg2JzcoJU38z7z9yk X6LsOOuune0ThYDGvvL8mRYnSxOPH3d6tql+WSqjQOhP7rnTn5hHH68LS37FwB6kxFKckWio xVxUnAgAdDrZpegCAAA= X-CMS-MailID: 20250220052734epcas5p2c0e082880350b5fa314c9062294bbc80 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250220052734epcas5p2c0e082880350b5fa314c9062294bbc80 References: <20250220052724.1256642-1-vinayak.kh@samsung.com> CXL spec 3.2 section 8.2.10.9.5.3 describes media operations commands. CXL devices supports media operations discovery command. Signed-off-by: Vinayak Holikatti --- hw/cxl/cxl-mailbox-utils.c | 133 +++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 9c7ea5bc35..f55a2fe614 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -89,6 +89,7 @@ enum { SANITIZE = 0x44, #define OVERWRITE 0x0 #define SECURE_ERASE 0x1 + #define MEDIA_OPERATIONS 0x2 PERSISTENT_MEM = 0x45, #define GET_SECURITY_STATE 0x0 MEDIA_AND_POISON = 0x43, @@ -1721,6 +1722,134 @@ static CXLRetCode cmd_sanitize_overwrite(const struct cxl_cmd *cmd, return CXL_MBOX_BG_STARTED; } +enum { + MEDIA_OP_CLASS_GENERAL = 0x0, + #define MEDIA_OP_GEN_SUBC_DISCOVERY 0x0 + MEDIA_OP_CLASS_SANITIZE = 0x1, + #define MEDIA_OP_SAN_SUBC_SANITIZE 0x0 + #define MEDIA_OP_SAN_SUBC_ZERO 0x1 + MEDIA_OP_CLASS_MAX +}; + +struct media_op_supported_list_entry { + uint8_t media_op_class; + uint8_t media_op_subclass; +}; + +struct media_op_discovery_out_pl { + uint64_t dpa_range_granularity; + uint16_t total_supported_operations; + uint16_t num_of_supported_operations; + struct media_op_supported_list_entry entry[]; +} QEMU_PACKED; + +static const struct media_op_supported_list_entry media_op_matrix[] = { + { MEDIA_OP_CLASS_GENERAL, MEDIA_OP_GEN_SUBC_DISCOVERY }, + { MEDIA_OP_CLASS_SANITIZE, MEDIA_OP_SAN_SUBC_SANITIZE }, + { MEDIA_OP_CLASS_SANITIZE, MEDIA_OP_SAN_SUBC_ZERO }, +}; + +static CXLRetCode media_operations_discovery(uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out) +{ + struct { + uint8_t media_operation_class; + uint8_t media_operation_subclass; + uint8_t rsvd[2]; + uint32_t dpa_range_count; + struct { + uint16_t start_index; + uint16_t num_ops; + } discovery_osa; + } QEMU_PACKED *media_op_in_disc_pl = (void *)payload_in; + int count = 0; + int num_ops = 0; + int start_index = 0; + int i = 0; + uint32_t dpa_range_count = 0; + struct media_op_discovery_out_pl *media_out_pl = NULL; + + if (len_in < sizeof(*media_op_in_disc_pl)) { + return CXL_MBOX_INVALID_PAYLOAD_LENGTH; + } + + media_out_pl = (struct media_op_discovery_out_pl *)payload_out; + num_ops = media_op_in_disc_pl->discovery_osa.num_ops; + start_index = media_op_in_disc_pl->discovery_osa.start_index; + dpa_range_count = media_op_in_disc_pl->dpa_range_count; + + /* + * As per spec CXL 3.2 8.2.10.9.5.3 dpa_range_count + * should be zero for discovery sub class command + */ + if (dpa_range_count) { + return CXL_MBOX_INVALID_INPUT; + } + + if (start_index + num_ops > ARRAY_SIZE(media_op_matrix)) { + return CXL_MBOX_INVALID_INPUT; + } + + media_out_pl->dpa_range_granularity = CXL_CACHE_LINE_SIZE; + media_out_pl->total_supported_operations = + ARRAY_SIZE(media_op_matrix); + if (num_ops > 0) { + for (i = start_index; i < start_index + num_ops; i++) { + media_out_pl->entry[count].media_op_class = + media_op_matrix[i].media_op_class; + media_out_pl->entry[count].media_op_subclass = + media_op_matrix[i].media_op_subclass; + count++; + if (count == num_ops) { + break; + } + } + } + + media_out_pl->num_of_supported_operations = count; + *len_out = sizeof(struct media_op_discovery_out_pl) + + (sizeof(struct media_op_supported_list_entry) * count); + return CXL_MBOX_SUCCESS; +} + +static CXLRetCode cmd_media_operations(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct { + uint8_t media_operation_class; + uint8_t media_operation_subclass; + uint8_t rsvd[2]; + uint32_t dpa_range_count; + } QEMU_PACKED *media_op_in_common_pl = (void *)payload_in; + uint8_t media_op_cl = 0; + uint8_t media_op_subclass = 0; + + if (len_in < sizeof(*media_op_in_common_pl)) { + return CXL_MBOX_INVALID_PAYLOAD_LENGTH; + } + + media_op_cl = media_op_in_common_pl->media_operation_class; + media_op_subclass = media_op_in_common_pl->media_operation_subclass; + + switch (media_op_cl) { + case MEDIA_OP_CLASS_GENERAL: + if (media_op_subclass != MEDIA_OP_GEN_SUBC_DISCOVERY) { + return CXL_MBOX_UNSUPPORTED; + } + + return media_operations_discovery(payload_in, len_in, payload_out, + len_out); + default: + return CXL_MBOX_UNSUPPORTED; + } +} + static CXLRetCode cmd_get_security_state(const struct cxl_cmd *cmd, uint8_t *payload_in, size_t len_in, @@ -2864,6 +2993,10 @@ static const struct cxl_cmd cxl_cmd_set[256][256] = { CXL_MBOX_SECURITY_STATE_CHANGE | CXL_MBOX_BACKGROUND_OPERATION | CXL_MBOX_BACKGROUND_OPERATION_ABORT)}, + [SANITIZE][MEDIA_OPERATIONS] = { "MEDIA_OPERATIONS", cmd_media_operations, + ~0, + (CXL_MBOX_IMMEDIATE_DATA_CHANGE | + CXL_MBOX_BACKGROUND_OPERATION)}, [PERSISTENT_MEM][GET_SECURITY_STATE] = { "GET_SECURITY_STATE", cmd_get_security_state, 0, 0 }, [MEDIA_AND_POISON][GET_POISON_LIST] = { "MEDIA_AND_POISON_GET_POISON_LIST",