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authorFrederic Barrat <fbarrat@linux.vnet.ibm.com>2018-01-23 12:31:42 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2018-01-24 11:42:58 +1100
commitaeddad1760aeb206d912b27b230269407efd5b06 (patch)
treee7931bbe8259c93bb8928bf4b95caa4c075e94ed /include/uapi/misc
parent5ef3166e8a32d78dfa985a323aa45ed485ff663a (diff)
ocxl: Add AFU interrupt support
Add user APIs through ioctl to allocate, free, and be notified of an AFU interrupt. For opencapi, an AFU can trigger an interrupt on the host by sending a specific command targeting a 64-bit object handle. On POWER9, this is implemented by mapping a special page in the address space of a process and a write to that page will trigger an interrupt. Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/uapi/misc')
-rw-r--r--include/uapi/misc/ocxl.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/uapi/misc/ocxl.h b/include/uapi/misc/ocxl.h
index a37e34edf52f..4b0b0b756f3e 100644
--- a/include/uapi/misc/ocxl.h
+++ b/include/uapi/misc/ocxl.h
@@ -32,9 +32,18 @@ struct ocxl_ioctl_attach {
__u64 reserved3;
};
+struct ocxl_ioctl_irq_fd {
+ __u64 irq_offset;
+ __s32 eventfd;
+ __u32 reserved;
+};
+
/* ioctl numbers */
#define OCXL_MAGIC 0xCA
/* AFU devices */
#define OCXL_IOCTL_ATTACH _IOW(OCXL_MAGIC, 0x10, struct ocxl_ioctl_attach)
+#define OCXL_IOCTL_IRQ_ALLOC _IOR(OCXL_MAGIC, 0x11, __u64)
+#define OCXL_IOCTL_IRQ_FREE _IOW(OCXL_MAGIC, 0x12, __u64)
+#define OCXL_IOCTL_IRQ_SET_FD _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)
#endif /* _UAPI_MISC_OCXL_H */

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