Initial implementation of IPEDMA, dummy driver for KAPTURE, start of API changes

1 files changed, 67 insertions, 0 deletions

diff --git a/dma/nwl_private.h b/dma/nwl_private.h
new file mode 100644
index 0000000..756e6ca
--- /dev/null
+++ b/dma/nwl_private.h
@@ -0,0 +1,67 @@
+#ifndef _PCILIB_DMA_NWL_PRIVATE_H
+#define _PCILIB_DMA_NWL_PRIVATE_H
+
+typedef struct nwl_dma_s nwl_dma_t;
+typedef struct pcilib_nwl_engine_description_s pcilib_nwl_engine_description_t;
+
+#define NWL_DMA_IRQ_SOURCE 0
+
+#define NWL_XAUI_ENGINE 0
+#define NWL_XRAWDATA_ENGINE 1
+#define NWL_MAX_PACKET_SIZE 4096 //16384
+//#define NWL_GENERATE_DMA_IRQ
+
+#define PCILIB_NWL_ALIGNMENT 			64  // in bytes
+#define PCILIB_NWL_DMA_DESCRIPTOR_SIZE		64  // in bytes
+#define PCILIB_NWL_DMA_PAGES			256 // 1024
+
+//#define DEBUG_HARDWARE
+//#define DEBUG_NWL
+
+#include "nwl.h"
+#include "nwl_irq.h"
+#include "nwl_register.h"
+#include "nwl_engine.h"
+#include "nwl_loopback.h"
+
+#define nwl_read_register(var, ctx, base, reg) pcilib_datacpy(&var, base + reg, 4, 1, ctx->dma_bank->raw_endianess)
+#define nwl_write_register(var, ctx, base, reg) pcilib_datacpy(base + reg, &var, 4, 1, ctx->dma_bank->raw_endianess)
+
+struct pcilib_nwl_engine_description_s {
+    pcilib_dma_engine_description_t desc;
+    char *base_addr;
+    
+    size_t ring_size, page_size;
+    size_t head, tail;
+    pcilib_kmem_handle_t *ring;
+    pcilib_kmem_handle_t *pages;
+    
+    int started;			/**< indicates that DMA buffers are initialized and reading is allowed */
+    int writting;			/**< indicates that we are in middle of writting packet */
+    int reused;				/**< indicates that DMA was found intialized, buffers were reused, and no additional initialization is needed */
+    int preserve;			/**< indicates that DMA should not be stopped during clean-up */
+};
+
+
+struct nwl_dma_s {
+    struct pcilib_dma_context_s dmactx;
+    
+    pcilib_t *pcilib;
+    
+    pcilib_dma_modification_t type;
+    
+    pcilib_register_bank_description_t *dma_bank;
+    char *base_addr;
+
+    pcilib_irq_type_t irq_enabled;	/**< indicates that IRQs are enabled */
+    pcilib_irq_type_t irq_preserve;	/**< indicates that IRQs should not be disabled during clean-up */
+    int started;			/**< indicates that DMA subsystem is initialized and DMA engine can start */
+    int irq_started;			/**< indicates that IRQ subsystem is initialized (detecting which types should be preserverd) */    
+    int loopback_started;		/**< indicates that benchmarking subsystem is initialized */
+
+    pcilib_dma_engine_t n_engines;
+    pcilib_nwl_engine_description_t engines[PCILIB_MAX_DMA_ENGINES + 1];
+};
+
+
+#endif /* _PCILIB_DMA_NWL_PRIVATE_H */