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Thu, 20 Feb 2025 14:02:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stgolabs.net; s=dreamhost; t=1740088962; bh=72sYCn7I+OYIEe3d08oE4hyDAJIRHvAK/V8mex0RX5Y=; h=From:To:Cc:Subject:Date:Content-Transfer-Encoding; b=DVn4nOsFruUWRF4MhZ5n4l00/TJz5Naq/aMUE1DT1gvdI9lZMh8BjLfFdCzM+YizP ZrtRwVAzJaxGc9t0PSx5SppTvk+UWnEuHcF73ZADHxveSMz62CoN2EGm5N/LMK+uFC ibBjBQGQvKA+io2saY7AXxT24VpBqA40Xp+xjqBWQmsmzFNXrQTVIuCRneMwpgpCaX dOt7ljLGvNL6MXH8II+wKqp/AbB9MtjCuVlWo1A3CyilZ0qgSMgHgkcPRpFPlK0/F9 42scsWTU2ljCGPqWBUGL/PvcquUP+JZO/CJqhOiME0EzExdyvCb3YT/65+yxeFPkAU fvtYvWT3iDshA== From: Davidlohr Bueso To: dave.jiang@intel.com, dan.j.williams@intel.com Cc: jonathan.cameron@huawei.com, alison.schofield@intel.com, ira.weiny@intel.com, vishal.l.verma@intel.com, seven.yi.lee@gmail.com, ming.li@zohomail.com, a.manzanares@samsung.com, fan.ni@samsung.com, anisa.su@samsung.com, dave@stgolabs.net, linux-cxl@vger.kernel.org Subject: [PATCH 1/4] cxl/pci: Introduce cxl_gpf_get_dvsec() Date: Thu, 20 Feb 2025 14:02:32 -0800 Message-Id: <20250220220235.276831-2-dave@stgolabs.net> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250220220235.276831-1-dave@stgolabs.net> References: <20250220220235.276831-1-dave@stgolabs.net> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a helper to fetch the port/device GPF dvsecs. This is currently only used for ports, but a later patch to export dirty count to users will make use of the device one. Signed-off-by: Davidlohr Bueso Reviewed-by: Li Ming Reviewed-by: Dave Jiang Reviewed-by: Ira Weiny Reviewed-by: Jonathan Cameron --- drivers/cxl/core/pci.c | 30 ++++++++++++++++++++---------- drivers/cxl/cxl.h | 2 ++ 2 files changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c index a5c65f79db18..96fecb799cbc 100644 --- a/drivers/cxl/core/pci.c +++ b/drivers/cxl/core/pci.c @@ -1072,6 +1072,22 @@ int cxl_pci_get_bandwidth(struct pci_dev *pdev, struct access_coordinate *c) #define GPF_TIMEOUT_BASE_MAX 2 #define GPF_TIMEOUT_SCALE_MAX 7 /* 10 seconds */ +u16 cxl_gpf_get_dvsec(struct device *dev, bool is_port) +{ + u16 dvsec; + + if (!dev_is_pci(dev)) + return 0; + + dvsec = pci_find_dvsec_capability(to_pci_dev(dev), PCI_VENDOR_ID_CXL, + is_port ? CXL_DVSEC_PORT_GPF : CXL_DVSEC_DEVICE_GPF); + if (!dvsec) + dev_warn(dev, "%s GPF DVSEC not present\n", + is_port ? "Port" : "Device"); + return dvsec; +} +EXPORT_SYMBOL_NS_GPL(cxl_gpf_get_dvsec, "CXL"); + static int update_gpf_port_dvsec(struct pci_dev *pdev, int dvsec, int phase) { u64 base, scale; @@ -1116,26 +1132,20 @@ int cxl_gpf_port_setup(struct device *dport_dev, struct cxl_port *port) { struct pci_dev *pdev; - if (!dev_is_pci(dport_dev)) - return 0; - - pdev = to_pci_dev(dport_dev); - if (!pdev || !port) + if (!port) return -EINVAL; if (!port->gpf_dvsec) { int dvsec; - dvsec = pci_find_dvsec_capability(pdev, PCI_VENDOR_ID_CXL, - CXL_DVSEC_PORT_GPF); - if (!dvsec) { - pci_warn(pdev, "Port GPF DVSEC not present\n"); + dvsec = cxl_gpf_get_dvsec(dport_dev, true); + if (!dvsec) return -EINVAL; - } port->gpf_dvsec = dvsec; } + pdev = to_pci_dev(dport_dev); update_gpf_port_dvsec(pdev, port->gpf_dvsec, 1); update_gpf_port_dvsec(pdev, port->gpf_dvsec, 2); diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 6baec4ba9141..29f2ab0d5bf6 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -901,4 +901,6 @@ bool cxl_endpoint_decoder_reset_detected(struct cxl_port *port); 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Thu, 20 Feb 2025 14:02:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stgolabs.net; s=dreamhost; t=1740088963; bh=A+Z+pjkn06zjAUF9YWa+SCCQMAmkJ3ZA5ItluKtMwLo=; h=From:To:Cc:Subject:Date:Content-Transfer-Encoding; b=SyT/riCwLvGyjIXNwxm0xuCk5x99VHf6jvRghOO5489cu376zRJlfuNivhIyhehsZ pH5oie/ekLHEaa37XjG1mm1d7gUKKa9hzhHQZWdbk50kJ/D5yKpOpTZFzx5fheO5RL tS659LuQJtuQEhl99xrDOUgiCArvYkED7yORcm+cvW/6qCrv3qQSa5dLV4MCPk42C2 2gzwgvTvXopYWviddZcZ8GLXvkRbAaqlOkkRH63u0MabH1A0D5BWi2hmAHGtpjj0NH FPSq2rFpp5rxPlcPLb2U2vl0Xyhgh6hcl9HD5uFnqITfYEkIAUcQxZWGgsabEYNSsY ApU+l2de1UUVA== From: Davidlohr Bueso To: dave.jiang@intel.com, dan.j.williams@intel.com Cc: jonathan.cameron@huawei.com, alison.schofield@intel.com, ira.weiny@intel.com, vishal.l.verma@intel.com, seven.yi.lee@gmail.com, ming.li@zohomail.com, a.manzanares@samsung.com, fan.ni@samsung.com, anisa.su@samsung.com, dave@stgolabs.net, linux-cxl@vger.kernel.org Subject: [PATCH 2/4] cxl/pmem: Rename cxl_dirty_shutdown_state() Date: Thu, 20 Feb 2025 14:02:33 -0800 Message-Id: <20250220220235.276831-3-dave@stgolabs.net> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250220220235.276831-1-dave@stgolabs.net> References: <20250220220235.276831-1-dave@stgolabs.net> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 ... to a better suited 'cxl_arm_dirty_shutdown()'. Signed-off-by: Davidlohr Bueso Reviewed-by: Dave Jiang Reviewed-by: Li Ming Reviewed-by: Ira Weiny Reviewed-by: Jonathan Cameron --- drivers/cxl/core/mbox.c | 4 ++-- drivers/cxl/cxlmem.h | 2 +- drivers/cxl/pmem.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index c5eedcae3b02..86d13f4a1c18 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -1281,7 +1281,7 @@ int cxl_mem_dpa_fetch(struct cxl_memdev_state *mds, struct cxl_dpa_info *info) } EXPORT_SYMBOL_NS_GPL(cxl_mem_dpa_fetch, "CXL"); -int cxl_dirty_shutdown_state(struct cxl_memdev_state *mds) +int cxl_arm_dirty_shutdown(struct cxl_memdev_state *mds) { struct cxl_mailbox *cxl_mbox = &mds->cxlds.cxl_mbox; struct cxl_mbox_cmd mbox_cmd; @@ -1297,7 +1297,7 @@ int cxl_dirty_shutdown_state(struct cxl_memdev_state *mds) return cxl_internal_send_cmd(cxl_mbox, &mbox_cmd); } -EXPORT_SYMBOL_NS_GPL(cxl_dirty_shutdown_state, "CXL"); +EXPORT_SYMBOL_NS_GPL(cxl_arm_dirty_shutdown, "CXL"); int cxl_set_timestamp(struct cxl_memdev_state *mds) { diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index 8e1e46c348f5..6d60030139df 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -822,7 +822,7 @@ void cxl_event_trace_record(const struct cxl_memdev *cxlmd, enum cxl_event_log_type type, enum cxl_event_type event_type, const uuid_t *uuid, union cxl_event *evt); -int cxl_dirty_shutdown_state(struct cxl_memdev_state *mds); +int cxl_arm_dirty_shutdown(struct cxl_memdev_state *mds); int cxl_set_timestamp(struct cxl_memdev_state *mds); int cxl_poison_state_init(struct cxl_memdev_state *mds); int cxl_mem_get_poison(struct cxl_memdev *cxlmd, u64 offset, u64 len, diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index bd0b6533d863..5afd9ca9a944 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -90,7 +90,7 @@ static int cxl_nvdimm_probe(struct device *dev) * clear it upon a successful GPF flow. 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Thu, 20 Feb 2025 14:02:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stgolabs.net; s=dreamhost; t=1740088964; bh=RsfkvAwiCx2zBCrgQV2dFAleKoPYQi4096YjWGa5L5o=; h=From:To:Cc:Subject:Date:Content-Transfer-Encoding; b=n4KFngdC7nASqIwWCEG4FI6yr6kQ4krQTRha1p8x/J4ig+WTvaPJ6B+wQxlE7J+xe hEcDpu5bKYxHsWCz2kbXyJ5+d3p/UoUvD0xx6HDRGNcw2GElsYcVHie8+UwSpFfqLX M51JpASe4lnZ5t6clstV2VYzAle990/DyLDVacF+e3T8eXT0pbNt9ymkuB8ORMHvcf eI65h9Brq8e9x3we6x2hUjI4L49m+BS9R5E3+ssbKjdA58bdEyObiz+Lg8BvTsmzzr WMImwNpF+IC7zl/GvKd3AuFSaxsHkNfxmnFdIu13ERj1EdRg5avE0JEglyFQHkbDE4 tWsvXhq5X4jCw== From: Davidlohr Bueso To: dave.jiang@intel.com, dan.j.williams@intel.com Cc: jonathan.cameron@huawei.com, alison.schofield@intel.com, ira.weiny@intel.com, vishal.l.verma@intel.com, seven.yi.lee@gmail.com, ming.li@zohomail.com, a.manzanares@samsung.com, fan.ni@samsung.com, anisa.su@samsung.com, dave@stgolabs.net, linux-cxl@vger.kernel.org, Jonathan Cameron Subject: [PATCH 3/4] cxl/pmem: Export dirty shutdown count via sysfs Date: Thu, 20 Feb 2025 14:02:34 -0800 Message-Id: <20250220220235.276831-4-dave@stgolabs.net> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250220220235.276831-1-dave@stgolabs.net> References: <20250220220235.276831-1-dave@stgolabs.net> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Similar to how the acpi_nfit driver exports Optane dirty shutdown count, introduce: /sys/bus/cxl/devices/nvdimm-bridge0/ndbusX/nmemY/cxl/dirty_shutdown Under the conditions that 1) dirty shutdown can be set, 2) Device GPF DVSEC exists, and 3) the count itself can be retrieved. Suggested-by: Dan Williams Signed-off-by: Davidlohr Bueso Reviewed-by: Dave Jiang Reviewed-by: Ira Weiny Reviewed-by: Jonathan Cameron --- Documentation/ABI/testing/sysfs-bus-cxl | 12 +++ Documentation/driver-api/cxl/maturity-map.rst | 2 +- drivers/cxl/core/mbox.c | 21 +++++ drivers/cxl/cxl.h | 1 + drivers/cxl/cxlmem.h | 13 ++++ drivers/cxl/pmem.c | 77 +++++++++++++++++-- 6 files changed, 117 insertions(+), 9 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-bus-cxl b/Documentation/ABI/testing/sysfs-bus-cxl index 04a880bd1dde..6d911f046a78 100644 --- a/Documentation/ABI/testing/sysfs-bus-cxl +++ b/Documentation/ABI/testing/sysfs-bus-cxl @@ -604,3 +604,15 @@ Description: See Documentation/ABI/stable/sysfs-devices-node. access0 provides the number to the closest initiator and access1 provides the number to the closest CPU. + + +What: /sys/bus/cxl/devices/nvdimm-bridge0/ndbusX/nmemY/cxl/dirty_shutdown +Date: Feb, 2025 +KernelVersion: v6.15 +Contact: linux-cxl@vger.kernel.org +Description: + (RO) The device dirty shutdown count value, which is the number + of times the device could have incurred in potential data loss. + The count is persistent across power loss and wraps back to 0 + upon overflow. If this file is not present, the device does not + have the necessary support for dirty tracking. diff --git a/Documentation/driver-api/cxl/maturity-map.rst b/Documentation/driver-api/cxl/maturity-map.rst index 99dd2c841e69..a2288f9df658 100644 --- a/Documentation/driver-api/cxl/maturity-map.rst +++ b/Documentation/driver-api/cxl/maturity-map.rst @@ -130,7 +130,7 @@ Mailbox commands * [0] Switch CCI * [3] Timestamp * [1] PMEM labels -* [1] PMEM GPF / Dirty Shutdown +* [3] PMEM GPF / Dirty Shutdown * [0] Scan Media PMU diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index 86d13f4a1c18..6bc398182a5d 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -1281,6 +1281,27 @@ int cxl_mem_dpa_fetch(struct cxl_memdev_state *mds, struct cxl_dpa_info *info) } EXPORT_SYMBOL_NS_GPL(cxl_mem_dpa_fetch, "CXL"); +int cxl_get_dirty_count(struct cxl_memdev_state *mds, u32 *count) +{ + struct cxl_mailbox *cxl_mbox = &mds->cxlds.cxl_mbox; + struct cxl_mbox_get_health_info_out hi; + struct cxl_mbox_cmd mbox_cmd; + int rc; + + mbox_cmd = (struct cxl_mbox_cmd) { + .opcode = CXL_MBOX_OP_GET_HEALTH_INFO, + .size_out = sizeof(hi), + .payload_out = &hi, + }; + + rc = cxl_internal_send_cmd(cxl_mbox, &mbox_cmd); + if (!rc) + *count = le32_to_cpu(hi.dirty_shutdown_cnt); + + return rc; +} +EXPORT_SYMBOL_NS_GPL(cxl_get_dirty_count, "CXL"); + int cxl_arm_dirty_shutdown(struct cxl_memdev_state *mds) { struct cxl_mailbox *cxl_mbox = &mds->cxlds.cxl_mbox; diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 29f2ab0d5bf6..8bdfa536262e 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -542,6 +542,7 @@ struct cxl_nvdimm { struct device dev; struct cxl_memdev *cxlmd; u8 dev_id[CXL_DEV_ID_LEN]; /* for nvdimm, string of 'serial' */ + u64 dirty_shutdowns; }; struct cxl_pmem_region_mapping { diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index 6d60030139df..3b6ef9e936c3 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -681,6 +681,18 @@ struct cxl_mbox_set_partition_info { #define CXL_SET_PARTITION_IMMEDIATE_FLAG BIT(0) +/* Get Health Info Output Payload CXL 3.2 Spec 8.2.10.9.3.1 Table 8-148 */ +struct cxl_mbox_get_health_info_out { + u8 health_status; + u8 media_status; + u8 additional_status; + u8 life_used; + __le16 device_temperature; + __le32 dirty_shutdown_cnt; + __le32 corrected_volatile_error_cnt; + __le32 corrected_persistent_error_cnt; +} __packed; + /* Set Shutdown State Input Payload CXL 3.2 Spec 8.2.10.9.3.5 Table 8-152 */ struct cxl_mbox_set_shutdown_state_in { u8 state; @@ -822,6 +834,7 @@ void cxl_event_trace_record(const struct cxl_memdev *cxlmd, enum cxl_event_log_type type, enum cxl_event_type event_type, const uuid_t *uuid, union cxl_event *evt); +int cxl_get_dirty_count(struct cxl_memdev_state *mds, u32 *count); int cxl_arm_dirty_shutdown(struct cxl_memdev_state *mds); int cxl_set_timestamp(struct cxl_memdev_state *mds); int cxl_poison_state_init(struct cxl_memdev_state *mds); diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index 5afd9ca9a944..d061fe3d2b86 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -42,15 +42,44 @@ static ssize_t id_show(struct device *dev, struct device_attribute *attr, char * } static DEVICE_ATTR_RO(id); +static ssize_t dirty_shutdown_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nvdimm *nvdimm = to_nvdimm(dev); + struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm); + + return sysfs_emit(buf, "%llu\n", cxl_nvd->dirty_shutdowns); +} +static DEVICE_ATTR_RO(dirty_shutdown); + static struct attribute *cxl_dimm_attributes[] = { &dev_attr_id.attr, &dev_attr_provider.attr, + &dev_attr_dirty_shutdown.attr, NULL }; +#define CXL_INVALID_DIRTY_SHUTDOWN_COUNT ULLONG_MAX +static umode_t cxl_dimm_visible(struct kobject *kobj, + struct attribute *a, int n) +{ + if (a == &dev_attr_dirty_shutdown.attr) { + struct device *dev = kobj_to_dev(kobj); + struct nvdimm *nvdimm = to_nvdimm(dev); + struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm); + + if (cxl_nvd->dirty_shutdowns == + CXL_INVALID_DIRTY_SHUTDOWN_COUNT) + return 0; + } + + return a->mode; +} + static const struct attribute_group cxl_dimm_attribute_group = { .name = "cxl", .attrs = cxl_dimm_attributes, + .is_visible = cxl_dimm_visible }; static const struct attribute_group *cxl_dimm_attribute_groups[] = { @@ -58,6 +87,38 @@ static const struct attribute_group *cxl_dimm_attribute_groups[] = { NULL }; +static void cxl_nvdimm_arm_dirty_shutdown_tracking(struct cxl_nvdimm *cxl_nvd) +{ + struct cxl_memdev *cxlmd = cxl_nvd->cxlmd; + struct cxl_dev_state *cxlds = cxlmd->cxlds; + struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds); + struct device *dev = &cxl_nvd->dev; + u32 count; + + /* + * Dirty tracking is enabled and exposed to the user, only when: + * - dirty shutdown on the device can be set, and, + * - the device has a Device GPF DVSEC (albeit unused), and, + * - the Get Health Info cmd can retrieve the device's dirty count. + */ + cxl_nvd->dirty_shutdowns = CXL_INVALID_DIRTY_SHUTDOWN_COUNT; + + if (cxl_arm_dirty_shutdown(mds)) { + dev_warn(dev, "GPF: could not set dirty shutdown state\n"); + return; + } + + if (!cxl_gpf_get_dvsec(cxlds->dev, false)) + return; + + if (cxl_get_dirty_count(mds, &count)) { + dev_warn(dev, "GPF: could not retrieve dirty count\n"); + return; + } + + cxl_nvd->dirty_shutdowns = count; +} + static int cxl_nvdimm_probe(struct device *dev) { struct cxl_nvdimm *cxl_nvd = to_cxl_nvdimm(dev); @@ -78,20 +139,20 @@ static int cxl_nvdimm_probe(struct device *dev) set_bit(ND_CMD_GET_CONFIG_SIZE, &cmd_mask); set_bit(ND_CMD_GET_CONFIG_DATA, &cmd_mask); set_bit(ND_CMD_SET_CONFIG_DATA, &cmd_mask); - nvdimm = __nvdimm_create(cxl_nvb->nvdimm_bus, cxl_nvd, - cxl_dimm_attribute_groups, flags, - cmd_mask, 0, NULL, cxl_nvd->dev_id, - cxl_security_ops, NULL); - if (!nvdimm) - return -ENOMEM; /* * Set dirty shutdown now, with the expectation that the device * clear it upon a successful GPF flow. 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Thu, 20 Feb 2025 22:02:45 +0000 Received: from localhost.localdomain (unknown [104.36.25.240]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dave@stgolabs.net) by pdx1-sub0-mail-a229.dreamhost.com (Postfix) with ESMTPSA id 4YzS1J3PPlzJG; Thu, 20 Feb 2025 14:02:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stgolabs.net; s=dreamhost; t=1740088965; bh=Hm/em4gW8zM4TNeuCgUrGpyltdUqxN8G9uB47IjUj4Q=; h=From:To:Cc:Subject:Date:Content-Transfer-Encoding; b=DDauWsHxojhLWQCYRZnyCM4sQD4lJr5j9mzPc+TWTWsB0hUw32v58y3obkSaDr/K4 6waGAkARi7g0dhX5REm2ff5fZeWKqsRp7/7dOrU4/bTzzH1UQtvKiMetJl8+aCWQ6k E+PWE9aAluE8BK50Wh2gfo2kyC/fHFBZE8VZ24km1lrK7C4mmj/W+0MwP4DN+l7TQ4 m+2vn64q+rbMhylnpca44UJScoce90Uy7f1jxEttj1qs+MxgasY9oVl4cIi5JHBm0S 3ejBwnfmP6JxGe4dRhe8Uwgua7ZEmMLx8esPib0wNUdzXB9dKqiu6+zse5ang8SE9i NnWhl4f8pl9TA== From: Davidlohr Bueso To: dave.jiang@intel.com, dan.j.williams@intel.com Cc: jonathan.cameron@huawei.com, alison.schofield@intel.com, ira.weiny@intel.com, vishal.l.verma@intel.com, seven.yi.lee@gmail.com, ming.li@zohomail.com, a.manzanares@samsung.com, fan.ni@samsung.com, anisa.su@samsung.com, dave@stgolabs.net, linux-cxl@vger.kernel.org, Jonathan Cameron Subject: [PATCH 4/4] tools/testing/cxl: Set Shutdown State support Date: Thu, 20 Feb 2025 14:02:35 -0800 Message-Id: <20250220220235.276831-5-dave@stgolabs.net> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250220220235.276831-1-dave@stgolabs.net> References: <20250220220235.276831-1-dave@stgolabs.net> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add support to emulate the CXL Set Shutdown State operation. Signed-off-by: Davidlohr Bueso Reviewed-by: Dave Jiang Reviewed-by: Li Ming Reviewed-by: Ira Weiny Reviewed-by: Jonathan Cameron --- tools/testing/cxl/test/mem.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index 4cbfafdf5371..9c4fee78b729 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -65,6 +65,10 @@ static struct cxl_cel_entry mock_cel[] = { .opcode = cpu_to_le16(CXL_MBOX_OP_GET_HEALTH_INFO), .effect = CXL_CMD_EFFECT_NONE, }, + { + .opcode = cpu_to_le16(CXL_MBOX_OP_SET_SHUTDOWN_STATE), + .effect = POLICY_CHANGE_IMMEDIATE, + }, { .opcode = cpu_to_le16(CXL_MBOX_OP_GET_POISON), .effect = CXL_CMD_EFFECT_NONE, @@ -161,6 +165,7 @@ struct cxl_mockmem_data { u8 event_buf[SZ_4K]; u64 timestamp; unsigned long sanitize_timeout; + u8 shutdown_state; }; static struct mock_event_log *event_find_log(struct device *dev, int log_type) @@ -1088,6 +1093,21 @@ static int mock_health_info(struct cxl_mbox_cmd *cmd) return 0; } +static int mock_set_shutdown_state(struct cxl_mockmem_data *mdata, + struct cxl_mbox_cmd *cmd) +{ + struct cxl_mbox_set_shutdown_state_in *ss = cmd->payload_in; + + if (cmd->size_in != sizeof(*ss)) + return -EINVAL; + + if (cmd->size_out != 0) + return -EINVAL; + + mdata->shutdown_state = ss->state; + return 0; +} + static struct mock_poison { struct cxl_dev_state *cxlds; u64 dpa; @@ -1421,6 +1441,9 @@ static int cxl_mock_mbox_send(struct cxl_mailbox *cxl_mbox, case CXL_MBOX_OP_PASSPHRASE_SECURE_ERASE: rc = mock_passphrase_secure_erase(mdata, cmd); break; + case CXL_MBOX_OP_SET_SHUTDOWN_STATE: + rc = mock_set_shutdown_state(mdata, cmd); + break; case CXL_MBOX_OP_GET_POISON: rc = mock_get_poison(cxlds, cmd); break;