[POWERPC] iSeries: Move viodasd probing

This way we only have entries in the device tree for disks that actually
exist.  A slight complication is that disks may be attached to LPARs
at runtime.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/include/asm-powerpc/iseries/vio.h b/include/asm-powerpc/iseries/vio.h
index 2555dfd6fac6..f9ac0d00b951 100644
--- a/include/asm-powerpc/iseries/vio.h
+++ b/include/asm-powerpc/iseries/vio.h
@@ -51,6 +51,51 @@
  */
 #define VIO_MAX_SUBTYPES 8
 
+#define VIOMAXBLOCKDMA  12
+
+struct open_data {
+        u64     disk_size;
+        u16     max_disk;
+        u16     cylinders;
+        u16     tracks;
+        u16     sectors;
+        u16     bytes_per_sector;
+};
+
+struct rw_data {
+        u64     offset;
+        struct {
+                u32     token;
+                u32     reserved;
+                u64     len;
+        } dma_info[VIOMAXBLOCKDMA];
+};
+
+struct vioblocklpevent {
+        struct HvLpEvent        event;
+        u32                     reserved;
+        u16                     version;
+        u16                     sub_result;
+        u16                     disk;
+        u16                     flags;
+        union {
+                struct open_data        open_data;
+                struct rw_data          rw_data;
+                u64                     changed;
+        } u;
+};
+
+#define vioblockflags_ro   0x0001
+
+enum vioblocksubtype {
+        vioblockopen = 0x0001,
+        vioblockclose = 0x0002,
+        vioblockread = 0x0003,
+        vioblockwrite = 0x0004,
+        vioblockflush = 0x0005,
+        vioblockcheck = 0x0007
+};
+
 struct viocdlpevent {
         struct HvLpEvent        event;
         u32                     reserved;
@@ -133,6 +178,8 @@ extern void vio_set_hostlp(void);
 extern void *vio_get_event_buffer(int subtype);
 extern void vio_free_event_buffer(int subtype, void *buffer);
 
+extern struct vio_dev *vio_create_viodasd(u32 unit);
+
 extern HvLpIndex viopath_hostLp;
 extern HvLpIndex viopath_ourLp;