修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/include/uapi/linux/vfio_ccw.h
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@@ -12,6 +12,7 @@
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 #include <linux/types.h>
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+/* used for START SUBCHANNEL, always present */
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 struct ccw_io_region {
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 #define ORB_AREA_SIZE 12
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 	__u8	orb_area[ORB_AREA_SIZE];
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@@ -22,4 +23,34 @@
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 	__u32	ret_code;
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 } __packed;
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+/*
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+ * used for processing commands that trigger asynchronous actions
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+ * Note: this is controlled by a capability
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+ */
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+#define VFIO_CCW_ASYNC_CMD_HSCH (1 << 0)
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+#define VFIO_CCW_ASYNC_CMD_CSCH (1 << 1)
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+struct ccw_cmd_region {
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+	__u32 command;
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+	__u32 ret_code;
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+} __packed;
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+
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+/*
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+ * Used for processing commands that read the subchannel-information block
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+ * Reading this region triggers a stsch() to hardware
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+ * Note: this is controlled by a capability
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+ */
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+struct ccw_schib_region {
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+#define SCHIB_AREA_SIZE 52
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+	__u8 schib_area[SCHIB_AREA_SIZE];
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+} __packed;
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+
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+/*
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+ * Used for returning a Channel Report Word to userspace.
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+ * Note: this is controlled by a capability
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+ */
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+struct ccw_crw_region {
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+	__u32 crw;
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+	__u32 pad;
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+} __packed;
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+
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 #endif