Changeset 579 for trunk/modules/vci_spi/include

Timestamp:

Nov 23, 2013, 1:25:13 AM (11 years ago)

Author:

bouyer

Message:

Add some basic DMA capabilities. Passes basic read/write tests.
Can only do line-aligned transfers which are multiple of a cache line in size,
but shouldn't be a strong limitation for real use.

File:

• trunk/modules/vci_spi/include/soclib/vcispi.h (modified) (1 diff)

trunk/modules/vci_spi/include/soclib/vcispi.h

@@ -35 +35 @@
     SPI_CTRL,
     SPI_DIVIDER,
-    SPI_SS
+    SPI_SS,
+    SPI_DMA_BASE,
+    SPI_DMA_BASEH,
+    SPI_DMA_COUNT
 };
 
-#define SPI_CTRL_CPOL           (1 << 15) /* Clock polarity                */
-#define SPI_CTRL_CPHA           (1 << 14) /* Clock phase                   */
-#define SPI_CTRL_IE_EN          (1 << 12) /* Interrupt Enable              */
+#define SPI_CTRL_DMA_BSY        (1 << 16) /* R   DMA in progress              */
+#define SPI_CTRL_CPOL           (1 << 15) /* R/W Clock polarity               */
+#define SPI_CTRL_CPHA           (1 << 14) /* R/W Clock phase                  */
+#define SPI_CTRL_IE_EN          (1 << 12) /* R/W Interrupt Enable             */
 // 9-11 reserved
-#define SPI_CTRL_GO_BSY         (1 << 8 ) /* Start the transfer            */
-#define SPI_CTRL_CHAR_LEN_MASK  (0xFF   ) /* Bits transmited in 1 transfer */
+#define SPI_CTRL_GO_BSY         (1 << 8 ) /* R/W Start the transfer           */
+#define SPI_CTRL_CHAR_LEN_MASK  (0xFF   ) /* R/W Bits transmited in 1 transfer*/
+
+#define SPI_DMA_COUNT_READ      (1 << 0) /* operation is a read (else write) */
 
 #endif /* SPISD_H */