diff options
Diffstat (limited to 'drivers/cxl/cxlmem.h')
| -rw-r--r-- | drivers/cxl/cxlmem.h | 78 |
1 files changed, 60 insertions, 18 deletions
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index c142532db8cb..f5d3326a1d0b 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -2,6 +2,7 @@ /* Copyright(c) 2020-2021 Intel Corporation. */ #ifndef __CXL_MEM_H__ #define __CXL_MEM_H__ +#include <uapi/linux/cxl_mem.h> #include <linux/cdev.h> #include "cxl.h" @@ -29,21 +30,6 @@ CXLMDEV_RESET_NEEDED_NOT) /** - * struct cdevm_file_operations - devm coordinated cdev file operations - * @fops: file operations that are synchronized against @shutdown - * @shutdown: disconnect driver data - * - * @shutdown is invoked in the devres release path to disconnect any - * driver instance data from @dev. It assumes synchronization with any - * fops operation that requires driver data. After @shutdown an - * operation may only reference @device data. - */ -struct cdevm_file_operations { - struct file_operations fops; - void (*shutdown)(struct device *dev); -}; - -/** * struct cxl_memdev - CXL bus object representing a Type-3 Memory Device * @dev: driver core device object * @cdev: char dev core object for ioctl operations @@ -62,9 +48,7 @@ static inline struct cxl_memdev *to_cxl_memdev(struct device *dev) return container_of(dev, struct cxl_memdev, dev); } -struct cxl_memdev * -devm_cxl_add_memdev(struct cxl_mem *cxlm, - const struct cdevm_file_operations *cdevm_fops); +struct cxl_memdev *devm_cxl_add_memdev(struct cxl_mem *cxlm); /** * struct cxl_mbox_cmd - A command to be submitted to hardware. @@ -158,4 +142,62 @@ struct cxl_mem { int (*mbox_send)(struct cxl_mem *cxlm, struct cxl_mbox_cmd *cmd); }; + +enum cxl_opcode { + CXL_MBOX_OP_INVALID = 0x0000, + CXL_MBOX_OP_RAW = CXL_MBOX_OP_INVALID, + CXL_MBOX_OP_GET_FW_INFO = 0x0200, + CXL_MBOX_OP_ACTIVATE_FW = 0x0202, + CXL_MBOX_OP_GET_SUPPORTED_LOGS = 0x0400, + CXL_MBOX_OP_GET_LOG = 0x0401, + CXL_MBOX_OP_IDENTIFY = 0x4000, + CXL_MBOX_OP_GET_PARTITION_INFO = 0x4100, + CXL_MBOX_OP_SET_PARTITION_INFO = 0x4101, + CXL_MBOX_OP_GET_LSA = 0x4102, + CXL_MBOX_OP_SET_LSA = 0x4103, + CXL_MBOX_OP_GET_HEALTH_INFO = 0x4200, + CXL_MBOX_OP_GET_ALERT_CONFIG = 0x4201, + CXL_MBOX_OP_SET_ALERT_CONFIG = 0x4202, + CXL_MBOX_OP_GET_SHUTDOWN_STATE = 0x4203, + CXL_MBOX_OP_SET_SHUTDOWN_STATE = 0x4204, + CXL_MBOX_OP_GET_POISON = 0x4300, + CXL_MBOX_OP_INJECT_POISON = 0x4301, + CXL_MBOX_OP_CLEAR_POISON = 0x4302, + CXL_MBOX_OP_GET_SCAN_MEDIA_CAPS = 0x4303, + CXL_MBOX_OP_SCAN_MEDIA = 0x4304, + CXL_MBOX_OP_GET_SCAN_MEDIA = 0x4305, + CXL_MBOX_OP_MAX = 0x10000 +}; + +/** + * struct cxl_mem_command - Driver representation of a memory device command + * @info: Command information as it exists for the UAPI + * @opcode: The actual bits used for the mailbox protocol + * @flags: Set of flags effecting driver behavior. + * + * * %CXL_CMD_FLAG_FORCE_ENABLE: In cases of error, commands with this flag + * will be enabled by the driver regardless of what hardware may have + * advertised. + * + * The cxl_mem_command is the driver's internal representation of commands that + * are supported by the driver. Some of these commands may not be supported by + * the hardware. The driver will use @info to validate the fields passed in by + * the user then submit the @opcode to the hardware. + * + * See struct cxl_command_info. + */ +struct cxl_mem_command { + struct cxl_command_info info; + enum cxl_opcode opcode; + u32 flags; +#define CXL_CMD_FLAG_NONE 0 +#define CXL_CMD_FLAG_FORCE_ENABLE BIT(0) +}; + +int cxl_mem_mbox_send_cmd(struct cxl_mem *cxlm, u16 opcode, void *in, + size_t in_size, void *out, size_t out_size); +int cxl_mem_identify(struct cxl_mem *cxlm); +int cxl_mem_enumerate_cmds(struct cxl_mem *cxlm); +int cxl_mem_create_range_info(struct cxl_mem *cxlm); +struct cxl_mem *cxl_mem_create(struct device *dev); #endif /* __CXL_MEM_H__ */ |