dmaengine: ioatdma: remove dma_v2.*

Clean out dma_v2 and remove ioat2 calls since we are moving everything
to just ioat.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 116 insertions, 3 deletions

diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 11bbcf27f86f..2566ec6ae8a4 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -18,13 +18,14 @@
 #define IOATDMA_H
 
 #include <linux/dmaengine.h>
-#include "hw.h"
-#include "registers.h"
 #include <linux/init.h>
 #include <linux/dmapool.h>
 #include <linux/cache.h>
 #include <linux/pci_ids.h>
-#include <net/tcp.h>
+#include <linux/circ_buf.h>
+#include <linux/interrupt.h>
+#include "registers.h"
+#include "hw.h"
 
 #define IOAT_DMA_VERSION  "4.00"
 
@@ -154,6 +155,41 @@ struct ioat_sed_ent {
 	unsigned int hw_pool;
 };
 
+/**
+ * struct ioat_ring_ent - wrapper around hardware descriptor
+ * @hw: hardware DMA descriptor (for memcpy)
+ * @fill: hardware fill descriptor
+ * @xor: hardware xor descriptor
+ * @xor_ex: hardware xor extension descriptor
+ * @pq: hardware pq descriptor
+ * @pq_ex: hardware pq extension descriptor
+ * @pqu: hardware pq update descriptor
+ * @raw: hardware raw (un-typed) descriptor
+ * @txd: the generic software descriptor for all engines
+ * @len: total transaction length for unmap
+ * @result: asynchronous result of validate operations
+ * @id: identifier for debug
+ */
+
+struct ioat_ring_ent {
+	union {
+		struct ioat_dma_descriptor *hw;
+		struct ioat_xor_descriptor *xor;
+		struct ioat_xor_ext_descriptor *xor_ex;
+		struct ioat_pq_descriptor *pq;
+		struct ioat_pq_ext_descriptor *pq_ex;
+		struct ioat_pq_update_descriptor *pqu;
+		struct ioat_raw_descriptor *raw;
+	};
+	size_t len;
+	struct dma_async_tx_descriptor txd;
+	enum sum_check_flags *result;
+	#ifdef DEBUG
+	int id;
+	#endif
+	struct ioat_sed_ent *sed;
+};
+
 static inline struct ioatdma_chan *to_ioat_chan(struct dma_chan *c)
 {
 	return container_of(c, struct ioatdma_chan, dma_chan);
@@ -291,6 +327,60 @@ static inline bool is_ioat_bug(unsigned long err)
 	return !!err;
 }
 
+#define IOAT_MAX_ORDER 16
+#define ioat_get_alloc_order() \
+	(min(ioat_ring_alloc_order, IOAT_MAX_ORDER))
+#define ioat_get_max_alloc_order() \
+	(min(ioat_ring_max_alloc_order, IOAT_MAX_ORDER))
+
+static inline u32 ioat_ring_size(struct ioatdma_chan *ioat_chan)
+{
+	return 1 << ioat_chan->alloc_order;
+}
+
+/* count of descriptors in flight with the engine */
+static inline u16 ioat_ring_active(struct ioatdma_chan *ioat_chan)
+{
+	return CIRC_CNT(ioat_chan->head, ioat_chan->tail,
+			ioat_ring_size(ioat_chan));
+}
+
+/* count of descriptors pending submission to hardware */
+static inline u16 ioat_ring_pending(struct ioatdma_chan *ioat_chan)
+{
+	return CIRC_CNT(ioat_chan->head, ioat_chan->issued,
+			ioat_ring_size(ioat_chan));
+}
+
+static inline u32 ioat_ring_space(struct ioatdma_chan *ioat_chan)
+{
+	return ioat_ring_size(ioat_chan) - ioat_ring_active(ioat_chan);
+}
+
+static inline u16
+ioat_xferlen_to_descs(struct ioatdma_chan *ioat_chan, size_t len)
+{
+	u16 num_descs = len >> ioat_chan->xfercap_log;
+
+	num_descs += !!(len & ((1 << ioat_chan->xfercap_log) - 1));
+	return num_descs;
+}
+
+static inline struct ioat_ring_ent *
+ioat_get_ring_ent(struct ioatdma_chan *ioat_chan, u16 idx)
+{
+	return ioat_chan->ring[idx & (ioat_ring_size(ioat_chan) - 1)];
+}
+
+static inline void
+ioat_set_chainaddr(struct ioatdma_chan *ioat_chan, u64 addr)
+{
+	writel(addr & 0x00000000FFFFFFFF,
+	       ioat_chan->reg_base + IOAT2_CHAINADDR_OFFSET_LOW);
+	writel(addr >> 32,
+	       ioat_chan->reg_base + IOAT2_CHAINADDR_OFFSET_HIGH);
+}
+
 int ioat_probe(struct ioatdma_device *ioat_dma);
 int ioat_register(struct ioatdma_device *ioat_dma);
 int ioat_dma_self_test(struct ioatdma_device *ioat_dma);
@@ -306,7 +396,30 @@ void ioat_kobject_add(struct ioatdma_device *ioat_dma, struct kobj_type *type);
 void ioat_kobject_del(struct ioatdma_device *ioat_dma);
 int ioat_dma_setup_interrupts(struct ioatdma_device *ioat_dma);
 void ioat_stop(struct ioatdma_chan *ioat_chan);
+int ioat_dma_probe(struct ioatdma_device *ioat_dma, int dca);
+int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca);
+struct dca_provider *ioat3_dca_init(struct pci_dev *pdev, void __iomem *iobase);
+int ioat_check_space_lock(struct ioatdma_chan *ioat_chan, int num_descs);
+int ioat_enumerate_channels(struct ioatdma_device *ioat_dma);
+struct dma_async_tx_descriptor *
+ioat_dma_prep_memcpy_lock(struct dma_chan *c, dma_addr_t dma_dest,
+			   dma_addr_t dma_src, size_t len, unsigned long flags);
+void ioat_issue_pending(struct dma_chan *chan);
+int ioat_alloc_chan_resources(struct dma_chan *c);
+void ioat_free_chan_resources(struct dma_chan *c);
+void __ioat_restart_chan(struct ioatdma_chan *ioat_chan);
+bool reshape_ring(struct ioatdma_chan *ioat, int order);
+void __ioat_issue_pending(struct ioatdma_chan *ioat_chan);
+void ioat_timer_event(unsigned long data);
+int ioat_quiesce(struct ioatdma_chan *ioat_chan, unsigned long tmo);
+int ioat_reset_sync(struct ioatdma_chan *ioat_chan, unsigned long tmo);
+
 extern const struct sysfs_ops ioat_sysfs_ops;
 extern struct ioat_sysfs_entry ioat_version_attr;
 extern struct ioat_sysfs_entry ioat_cap_attr;
+extern int ioat_pending_level;
+extern int ioat_ring_alloc_order;
+extern struct kobj_type ioat_ktype;
+extern struct kmem_cache *ioat_cache;
+
 #endif /* IOATDMA_H */