add fpga_test

2016-07-30 09:55:11 +00:00
parent 2fbbbcc072
commit 1c64feb4cb
38 changed files with 6644 additions and 1 deletions
--- a/tos/fpga_test/include/driver_vec.h
+++ b/tos/fpga_test/include/driver_vec.h
@@ -0,0 +1,125 @@
+/*
+ * driver_vec.h
+ *
+ * Interface for exposure of BaS drivers to the OS
+ *
+ * This file is part of BaS_gcc.
+ *
+ * BaS_gcc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BaS_gcc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with BaS_gcc.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  Created on: 24.10.2013
+ *      Author: Markus Fröschle
+ */
+
+#ifndef _DRIVER_VEC_H_
+#define _DRIVER_VEC_H_
+
+
+enum driver_type
+{
+	END_OF_DRIVERS,		/* marks end of driver list */
+	BLOCKDEV_DRIVER,
+	CHARDEV_DRIVER,
+	VIDEO_DRIVER,
+	XHDI_DRIVER,
+	MCD_DRIVER,
+};
+
+struct generic_driver_interface
+{
+	uint32_t (*init)(void);
+	uint32_t (*read)(void *buf, size_t count);
+	uint32_t (*write)(const void *buf, size_t count);
+	uint32_t (*ioctl)(uint32_t request, ...);
+};
+
+
+/* Chained buffer descriptor */
+typedef volatile struct MCD_bufDesc_struct MCD_bufDesc;
+struct MCD_bufDesc_struct {
+	uint32_t flags;         /* flags describing the DMA */
+    uint32_t csumResult;    /* checksum from checksumming performed since last checksum reset */
+	int8_t  *srcAddr;      /* the address to move data from */
+	int8_t  *destAddr;     /* the address to move data to */
+	int8_t  *lastDestAddr; /* the last address written to */
+    uint32_t dmaSize;       /* the number of bytes to transfer independent of the transfer size */
+    MCD_bufDesc *next; /* next buffer descriptor in chain */
+    uint32_t info;          /* private information about this descriptor;  DMA does not affect it */
+};
+
+/* Progress Query struct */
+typedef volatile struct MCD_XferProg_struct {
+	int8_t *lastSrcAddr;         /* the most-recent or last, post-increment source address */
+	int8_t *lastDestAddr;        /* the most-recent or last, post-increment destination address */
+	uint32_t  dmaSize;            /* the amount of data transferred for the current buffer */
+	MCD_bufDesc *currBufDesc;/* pointer to the current buffer descriptor being DMAed */
+} MCD_XferProg;
+
+struct dma_driver_interface
+{
+	int32_t version;
+	int32_t magic;
+	int32_t (*dma_set_initiator)(int initiator);
+	uint32_t (*dma_get_initiator)(int requestor);
+	void (*dma_free_initiator)(int requestor);
+	int32_t (*dma_set_channel)(int requestor, void (*handler)(void));
+	int (*dma_get_channel)(int requestor);
+	void (*dma_free_channel)(int requestor);
+	void (*dma_clear_channel)(int channel);
+	int (*MCD_startDma)(int channel, int8_t *srcAddr, int16_t srcIncr, int8_t *destAddr, int16_t destIncr,
+						uint32_t dmaSize, uint32_t xferSize, uint32_t initiator, int32_t priority, uint32_t flags,
+						uint32_t funcDesc);
+	int (*MCD_dmaStatus)(int channel);
+	int (*MCD_XferProgrQuery)(int channel, MCD_XferProg *progRep);
+	int (*MCD_killDma)(int channel);
+	int (*MCD_continDma)(int channel);
+	int (*MCD_pauseDma)(int channel);
+	int (*MCD_resumeDma)(int channel);
+	int (*MCD_csumQuery)(int channel, uint32_t *csum);
+	void *(*dma_malloc)(long amount);
+	int (*dma_free)(void *addr);
+};
+	
+struct xhdi_driver_interface
+{
+	uint32_t (*xhdivec)();
+};
+
+union interface
+{
+	struct generic_driver_interface *gdi;
+	struct xhdi_driver_interface *xhdi;
+	struct dma_driver_interface *dma;
+};
+
+struct generic_interface
+{
+	enum driver_type type;
+	char name[16];
+	char description[64];
+	int version;
+	int revision;
+	union interface interface;
+};
+
+struct driver_table
+{
+	uint32_t bas_version;
+	uint32_t bas_revision;
+	uint32_t (*remove_handler)();			/* calling this will disable the BaS' hook into trap #0 */
+	struct generic_interface *interfaces;
+};
+
+
+#endif /* _DRIVER_VEC_H_ */