diff options
| author | Mahesh Rajashekhara | 2015-08-28 12:38:36 +0200 |
|---|---|---|
| committer | James Bottomley | 2015-11-10 01:01:29 +0100 |
| commit | c6992781d9e8086d592f95870092a59042d111a2 (patch) | |
| tree | 0d6dd0123e51a43d7bea3e5b7a8daa39d14d275c /drivers/scsi/aacraid/src.c | |
| parent | aacraid: Change interrupt mode to MSI for Series 6 (diff) | |
| download | kernel-qcow2-linux-c6992781d9e8086d592f95870092a59042d111a2.tar.gz kernel-qcow2-linux-c6992781d9e8086d592f95870092a59042d111a2.tar.xz kernel-qcow2-linux-c6992781d9e8086d592f95870092a59042d111a2.zip | |
aacraid: Enable 64bit write to controller register
If writeq() not supported, then do atomic two 32bit write
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/aacraid/src.c')
| -rw-r--r-- | drivers/scsi/aacraid/src.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c index eb07b3d4ed38..1409a0b945ea 100644 --- a/drivers/scsi/aacraid/src.c +++ b/drivers/scsi/aacraid/src.c @@ -447,6 +447,10 @@ static int aac_src_deliver_message(struct fib *fib) u32 fibsize; dma_addr_t address; struct aac_fib_xporthdr *pFibX; +#if !defined(writeq) + unsigned long flags; +#endif + u16 hdr_size = le16_to_cpu(fib->hw_fib_va->header.Size); atomic_inc(&q->numpending); @@ -511,10 +515,14 @@ static int aac_src_deliver_message(struct fib *fib) return -EINVAL; address |= fibsize; } - +#if defined(writeq) + src_writeq(dev, MUnit.IQ_L, (u64)address); +#else + spin_lock_irqsave(&fib->dev->iq_lock, flags); src_writel(dev, MUnit.IQ_H, upper_32_bits(address) & 0xffffffff); src_writel(dev, MUnit.IQ_L, address & 0xffffffff); - + spin_unlock_irqrestore(&fib->dev->iq_lock, flags); +#endif return 0; } |