From a640c40c6bcf4bad0b78e0ea6ea04f2a5f3f877f Mon Sep 17 00:00:00 2001 From: "Suren A. Chilingaryan" Date: Fri, 19 Dec 2014 00:14:21 +0100 Subject: Initial implementation of IPEDMA, dummy driver for KAPTURE, start of API changes --- dma/ipe_private.h | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 dma/ipe_private.h (limited to 'dma/ipe_private.h') diff --git a/dma/ipe_private.h b/dma/ipe_private.h new file mode 100644 index 0000000..e6e70c2 --- /dev/null +++ b/dma/ipe_private.h @@ -0,0 +1,56 @@ +#ifndef _PCILIB_DMA_IPE_PRIVATE_H +#define _PCILIB_DMA_IPE_PRIVATE_H + +#define IPEDMA_CORES 1 +#define IPEDMA_TLP_SIZE 32 +#define IPEDMA_PAGE_SIZE 4096 +#define IPEDMA_DMA_PAGES 16 /**< number of DMA pages in the ring buffer to allocate */ +#define IPEDMA_DMA_PROGRESS_THRESHOLD 1 /**< how many pages the DMA engine should fill before reporting progress */ +#define IPEDMA_DESCRIPTOR_SIZE 128 +#define IPEDMA_DESCRIPTOR_ALIGNMENT 64 + +//#define IPEDMA_DEBUG +#define IPEDMA_BUG_DMARD /**< No register read during DMA transfer */ + +#define IPEDMA_REG_RESET 0x00 +#define IPEDMA_REG_CONTROL 0x04 +#define IPEDMA_REG_TLP_SIZE 0x0C +#define IPEDMA_REG_TLP_COUNT 0x10 +#define IPEDMA_REG_PAGE_ADDR 0x50 +#define IPEDMA_REG_UPDATE_ADDR 0x54 +#define IPEDMA_REG_LAST_READ 0x58 +#define IPEDMA_REG_PAGE_COUNT 0x5C +#define IPEDMA_REG_UPDATE_THRESHOLD 0x60 + + + +typedef struct ipe_dma_s ipe_dma_t; + +struct ipe_dma_s { + struct pcilib_dma_context_s dmactx; + pcilib_dma_engine_description_t engine[2]; + + pcilib_t *pcilib; + + 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 irq_started; /**< indicates that IRQ subsystem is initialized (detecting which types should be preserverd) */ + + 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 */ + int mode64; /**< indicates 64-bit operation mode */ + + pcilib_kmem_handle_t *desc; /**< in-memory status descriptor written by DMA engine upon operation progess */ + pcilib_kmem_handle_t *pages; /**< collection of memory-locked pages for DMA operation */ + + size_t ring_size, page_size; + size_t last_read, last_read_addr, last_written; + +}; + +#endif /* _PCILIB_DMA_IPE_PRIVATE_H */ -- cgit v1.2.3