diff options
| author | Ian Munsie <imunsie@au1.ibm.com> | 2014-10-08 19:55:05 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2014-10-08 20:16:19 +1100 |
| commit | a9282d01cf357379ce29103cec5e7651a53c634d (patch) | |
| tree | efbc02a23f5dbc8453cdb4584c0ac2cef1316ba0 /include/uapi/misc | |
| parent | 881632c905f29fd7173250fd1d5b3a9a769d02be (diff) | |
cxl: Add documentation for userspace APIs
This documentation gives an overview of the hardware architecture, userspace
APIs via /dev/cxl/afuM.N and the syfs files. It also adds a MAINTAINERS file
entry for cxl.
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/uapi/misc')
| -rw-r--r-- | include/uapi/misc/cxl.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/uapi/misc/cxl.h b/include/uapi/misc/cxl.h index c232be6ae21f..cd6d789b73ec 100644 --- a/include/uapi/misc/cxl.h +++ b/include/uapi/misc/cxl.h @@ -13,7 +13,7 @@ #include <linux/types.h> #include <linux/ioctl.h> -/* Structs for IOCTLS for userspace to talk to the kernel */ + struct cxl_ioctl_start_work { __u64 flags; __u64 work_element_descriptor; @@ -26,19 +26,20 @@ struct cxl_ioctl_start_work { __u64 reserved5; __u64 reserved6; }; + #define CXL_START_WORK_AMR 0x0000000000000001ULL #define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL #define CXL_START_WORK_ALL (CXL_START_WORK_AMR |\ CXL_START_WORK_NUM_IRQS) -/* IOCTL numbers */ +/* ioctl numbers */ #define CXL_MAGIC 0xCA #define CXL_IOCTL_START_WORK _IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work) #define CXL_IOCTL_GET_PROCESS_ELEMENT _IOR(CXL_MAGIC, 0x01, __u32) -/* Events from read() */ #define CXL_READ_MIN_SIZE 0x1000 /* 4K */ +/* Events from read() */ enum cxl_event_type { CXL_EVENT_RESERVED = 0, CXL_EVENT_AFU_INTERRUPT = 1, |