ioat: move to drivers/dma/ioat/

When first created the ioat driver was the only inhabitant of
drivers/dma/.  Now, it is the only multi-file (more than a .c and a .h)
driver in the directory.  Moving it to an ioat/ subdirectory allows the
naming convention to be cleaned up, and allows for future splitting of
the source files by hardware version (v1, v2, and v3).
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/dma/Makefile

 obj-$(CONFIG_DMA_ENGINE) += dmaengine.o
 obj-$(CONFIG_NET_DMA) += iovlock.o
 obj-$(CONFIG_DMATEST) += dmatest.o
-obj-$(CONFIG_INTEL_IOATDMA) += ioatdma.o
-ioatdma-objs := ioat.o ioat_dma.o ioat_dca.o
+obj-$(CONFIG_INTEL_IOATDMA) += ioat/
 obj-$(CONFIG_INTEL_IOP_ADMA) += iop-adma.o
 obj-$(CONFIG_FSL_DMA) += fsldma.o
 obj-$(CONFIG_MV_XOR) += mv_xor.o

drivers/dma/ioat/Makefile

+obj-$(CONFIG_INTEL_IOATDMA) += ioatdma.o
+ioatdma-objs := pci.o dma.o dca.o

drivers/dma/ioat_dca.c → drivers/dma/ioat/dca.c

@@ -33,8 +33,8 @@
 #define cpu_physical_id(cpu) (cpuid_ebx(1) >> 24)
 #endif
 
-#include "ioatdma.h"
-#include "ioatdma_registers.h"
+#include "dma.h"
+#include "registers.h"
 
 /*
  * Bit 7 of a tag map entry is the "valid" bit, if it is set then bits 0:6

drivers/dma/ioat_dma.c → drivers/dma/ioat/dma.c

@@ -34,9 +34,9 @@
 #include <linux/dma-mapping.h>
 #include <linux/workqueue.h>
 #include <linux/i7300_idle.h>
-#include "ioatdma.h"
-#include "ioatdma_registers.h"
-#include "ioatdma_hw.h"
+#include "dma.h"
+#include "registers.h"
+#include "hw.h"
 
 #define to_ioat_chan(chan) container_of(chan, struct ioat_dma_chan, common)
 #define to_ioatdma_device(dev) container_of(dev, struct ioatdma_device, common)

drivers/dma/ioatdma.h → drivers/dma/ioat/dma.h

@@ -22,7 +22,7 @@
 #define IOATDMA_H
 
 #include <linux/dmaengine.h>
-#include "ioatdma_hw.h"
+#include "hw.h"
 #include <linux/init.h>
 #include <linux/dmapool.h>
 #include <linux/cache.h>

drivers/dma/ioat.c → drivers/dma/ioat/pci.c

@@ -30,9 +30,9 @@
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/dca.h>
-#include "ioatdma.h"
-#include "ioatdma_registers.h"
-#include "ioatdma_hw.h"
+#include "dma.h"
+#include "registers.h"
+#include "hw.h"
 
 MODULE_VERSION(IOAT_DMA_VERSION);
 MODULE_LICENSE("GPL");

drivers/idle/i7300_idle.c

@@ -29,8 +29,8 @@
 
 #include <asm/idle.h>
 
-#include "../dma/ioatdma_hw.h"
-#include "../dma/ioatdma_registers.h"
+#include "../dma/ioat/hw.h"
+#include "../dma/ioat/registers.h"
 
 #define I7300_IDLE_DRIVER_VERSION	"1.55"
 #define I7300_PRINT			"i7300_idle:"