MIPS: Add some build support for the M14K and also for the PIC32MZ Starter Kit. Still a long way to go

1 files changed, 228 insertions, 0 deletions

diff --git a/nuttx/arch/mips/src/pic32mz/pic32mz-dma.h b/nuttx/arch/mips/src/pic32mz/pic32mz-dma.h
new file mode 100644
index 000000000..99cc6c47c
--- /dev/null
+++ b/nuttx/arch/mips/src/pic32mz/pic32mz-dma.h
@@ -0,0 +1,228 @@
+/************************************************************************************
+ * arch/mips/src/pic32mx/pic32mx-dma.h
+ *
+ *   Copyright (C) 2015 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_MIPS_SRC_PIC32MZ_PIC32MZ_DMA_H
+#define __ARCH_MIPS_SRC_PIC32MZ_PIC32MZ_DMA_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+typedef FAR void *DMA_HANDLE;
+typedef void (*dma_callback_t)(DMA_HANDLE handle, void *arg, int result);
+
+/* The following is used for sampling DMA registers when CONFIG DEBUG_DMA is selected */
+
+#ifdef CONFIG_DEBUG_DMA
+struct pic32mx_dmaglobalregs_s
+{
+  /* Global Registers */
+#warning "Missing definitions"
+};
+
+struct pic32mx_dmachanregs_s
+{
+  /* Channel Registers */
+#warning "Missing definitions"
+};
+
+struct pic32mx_dmaregs_s
+{
+  /* Global Registers */
+
+  struct pic32mx_dmaglobalregs_s gbl;
+
+  /* Channel Registers */
+
+  struct pic32mx_dmachanregs_s   ch;
+};
+#endif
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pic32mx_dmainitialize
+ *
+ * Description:
+ *   Initialize the GPDMA subsystem.
+ *
+ * Returned Value:
+ *   None
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+void pic32mx_dmainitilaize(void);
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_dmachannel
+ *
+ * Description:
+ *   Allocate a DMA channel.  This function sets aside a DMA channel and gives the
+ *  caller exclusive access to the DMA channel.
+ *
+ * Returned Value:
+ *   One success, this function returns a non-NULL, void* DMA channel handle.  NULL
+ *   is returned on any failure.  This function can fail only if no DMA channel is
+ *   available.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+DMA_HANDLE pic32mx_dmachannel(void);
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_dmafree
+ *
+ * Description:
+ *   Release a DMA channel.  NOTE:  The 'handle' used in this argument must NEVER be
+ *   used again until pic32mx_dmachannel() is called again to re-gain a valid handle.
+ *
+ * Returned Value:
+ *   None
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+void pic32mx_dmafree(DMA_HANDLE handle);
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_dmasetup
+ *
+ * Description:
+ *   Configure DMA for one transfer.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+int pic32mx_dmarxsetup(DMA_HANDLE handle, uint32_t control, uint32_t config,
+                       uint32_t srcaddr, uint32_t destaddr, size_t nbytes);
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_dmastart
+ *
+ * Description:
+ *   Start the DMA transfer
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+int pic32mx_dmastart(DMA_HANDLE handle, dma_callback_t callback, void *arg);
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_dmastop
+ *
+ * Description:
+ *   Cancel the DMA.  After pic32mx_dmastop() is called, the DMA channel is reset
+ *   and pic32mx_dmasetup() must be called before pic32mx_dmastart() can be called
+ *   again
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+void pic32mx_dmastop(DMA_HANDLE handle);
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_dmasample
+ *
+ * Description:
+ *   Sample DMA register contents
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+#ifdef CONFIG_DEBUG_DMA
+void pic32mx_dmasample(DMA_HANDLE handle, struct pic32mx_dmaregs_s *regs);
+#else
+#  define pic32mx_dmasample(handle,regs)
+#endif
+#endif
+
+/************************************************************************************
+ * Name: pic32mx_dmadump
+ *
+ * Description:
+ *   Dump previously sampled DMA register contents
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_PIC32MX_DMA
+#ifdef CONFIG_DEBUG_DMA
+void pic32mx_dmadump(DMA_HANDLE handle, const struct pic32mx_dmaregs_s *regs,
+                     const char *msg);
+#else
+#  define pic32mx_dmadump(handle,regs,msg)
+#endif
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_MIPS_SRC_PIC32MZ_PIC32MZ_DMA_H */