[SCSI] aacraid: Added Sync.mode to support series 7/8/9 controllers

[firefly-linux-kernel-4.4.55.git] / drivers / scsi / aacraid / commsup.c

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index e5f2d7d9002ec4df139d9db4260069d58d2fcfce..4b32ca442433036860bc819eff2909efc6155e46 100644 (file)
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -416,6 +416,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
        unsigned long flags = 0;
        unsigned long qflags;
        unsigned long mflags = 0;
+       unsigned long sflags = 0;
 
 
        if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
@@ -512,6 +513,31 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
                spin_lock_irqsave(&fibptr->event_lock, flags);
        }
 
+       if (dev->sync_mode) {
+               if (wait)
+                       spin_unlock_irqrestore(&fibptr->event_lock, flags);
+               spin_lock_irqsave(&dev->sync_lock, sflags);
+               if (dev->sync_fib) {
+                       list_add_tail(&fibptr->fiblink, &dev->sync_fib_list);
+                       spin_unlock_irqrestore(&dev->sync_lock, sflags);
+               } else {
+                       dev->sync_fib = fibptr;
+                       spin_unlock_irqrestore(&dev->sync_lock, sflags);
+                       aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB,
+                               (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0,
+                               NULL, NULL, NULL, NULL, NULL);
+               }
+               if (wait) {
+                       fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
+                       if (down_interruptible(&fibptr->event_wait)) {
+                               fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT;
+                               return -EFAULT;
+                       }
+                       return 0;
+               }
+               return -EINPROGRESS;
+       }
+
        if (aac_adapter_deliver(fibptr) != 0) {
                printk(KERN_ERR "aac_fib_send: returned -EBUSY\n");
                if (wait) {