--- zzzz-none-000/linux-3.10.107/drivers/rapidio/devices/tsi721.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/rapidio/devices/tsi721.h	2021-02-04 17:41:59.000000000 +0000
@@ -72,8 +72,6 @@
 #define TSI721_MSIXPBA_OFFSET	0x2a000
 #define TSI721_PCIECFG_EPCTL	0x400
 
-#define MAX_READ_REQUEST_SZ_SHIFT	12
-
 /*
  * Event Management Registers
  */
@@ -644,23 +642,26 @@
 
 #ifdef CONFIG_RAPIDIO_DMA_ENGINE
 
+#define TSI721_BDMA_MAX_BCOUNT	(TSI721_DMAD_BCOUNT1 + 1)
+
 struct tsi721_tx_desc {
 	struct dma_async_tx_descriptor	txd;
-	struct tsi721_dma_desc		*hw_desc;
 	u16				destid;
 	/* low 64-bits of 66-bit RIO address */
 	u64				rio_addr;
 	/* upper 2-bits of 66-bit RIO address */
 	u8				rio_addr_u;
-	bool				interrupt;
+	enum dma_rtype			rtype;
 	struct list_head		desc_node;
-	struct list_head		tx_list;
+	struct scatterlist		*sg;
+	unsigned int			sg_len;
+	enum dma_status			status;
 };
 
 struct tsi721_bdma_chan {
 	int		id;
 	void __iomem	*regs;
-	int		bd_num;		/* number of buffer descriptors */
+	int		bd_num;		/* number of HW buffer descriptors */
 	void		*bd_base;	/* start of DMA descriptors */
 	dma_addr_t	bd_phys;
 	void		*sts_base;	/* start of DMA BD status FIFO */
@@ -676,7 +677,6 @@
 	struct list_head	active_list;
 	struct list_head	queue;
 	struct list_head	free_list;
-	dma_cookie_t		completed_cookie;
 	struct tasklet_struct	tasklet;
 	bool			active;
 };