1 files changed, 144 insertions, 0 deletions

diff --git a/firmware/target/arm/tms320dm320/sansa-connect/tnetv105_cppi.h b/firmware/target/arm/tms320dm320/sansa-connect/tnetv105_cppi.h
new file mode 100644
index 0000000000..9d0ac37cd0
--- /dev/null
+++ b/firmware/target/arm/tms320dm320/sansa-connect/tnetv105_cppi.h
@@ -0,0 +1,144 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: $
+ *
+ * Copyright (C) 2021 by Tomasz Moń
+ * Copied with minor modifications from Sansa Connect Linux driver
+ * Copyright (c) 2005 Zermatt Systems, Inc.
+ * Written by: Ben Bostwick
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef TNETV105_CPPI_H
+#define TNETV105_CPPI_H
+
+#include <stdint.h>
+
+typedef uint32_t dma_addr_t;
+#define USB_CPPI_LOGGING   0
+#define EAGAIN             11 /* Try again */
+#define CPPI_RX_NUM_BUFS   129
+#define CPPI_INFO_MEM_SIZE (2 * CPPI_RX_NUM_BUFS * sizeof(cppi_rcb) + 4 * 2 * sizeof(cppi_tcb))
+
+#define CPPI_NUM_CHANNELS    4
+#define CPPI_MAX_FRAG        0xFE00
+
+struct cppi_info;
+
+typedef struct
+{
+    uint32_t HNext;      /*< Hardware's pointer to next buffer descriptor  */
+    uint32_t BufPtr;     /*< Pointer to the data buffer                    */
+    uint32_t Off_BLen;   /*< Contains buffer offset and buffer length      */
+    uint32_t mode;       /*< SOP, EOP, Ownership, EOQ, Teardown, Q Starv, Length */
+    void *Next;
+    void *Eop;
+    dma_addr_t dma_handle;
+    uint32_t dummy;
+
+} cppi_tcb;
+
+typedef struct
+{
+    uint32_t HNext;      /*< Hardware's pointer to next buffer descriptor     */
+    uint32_t BufPtr;     /*< Pointer to the data buffer                       */
+    uint32_t Off_BLen;   /*< Contains buffer offset and buffer length         */
+    uint32_t mode;       /*< SOP, EOP, Ownership, EOQ, Teardown Complete bits */
+    void *Next;
+    void *Eop;
+    dma_addr_t dma_handle;
+    uint32_t fake_bytes;
+
+} cppi_rcb;
+
+typedef struct cppi_txcntl
+{
+    cppi_tcb *TcbPool;
+    cppi_tcb *TxActQueueHead;
+    cppi_tcb *TxActQueueTail;
+    uint32_t   TxActQueueCount;
+    uint32_t   TxActive;
+    cppi_tcb *LastTcbProcessed;
+    char    *TcbStart;
+    dma_addr_t tcb_start_dma_addr;
+    int TxNumBuffers;
+
+#ifdef _CPHAL_STATS
+    uint32_t   TxMisQCnt;
+    uint32_t   TxEOQCnt;
+    uint32_t   TxPacketsServiced;
+    uint32_t   TxMaxServiced;
+    uint32_t  NumTxInt;
+#endif
+} cppi_txcntl;
+
+
+typedef struct cppi_rxcntl
+{
+    cppi_rcb *RcbPool;
+    cppi_rcb *RxActQueueHead;
+    cppi_rcb *RxActQueueTail;
+    uint32_t   RxActQueueCount;
+    uint32_t   RxActive;
+    char    *RcbStart;
+    dma_addr_t rcb_start_dma_addr;
+    int RxNumBuffers;
+
+    cppi_rcb *RxFakeRcvHead;
+    cppi_rcb *RxFakeRcvTail;
+
+#ifdef _CPHAL_STATS
+    uint32_t  RxMisQCnt;
+    uint32_t  RxEOQCnt;
+    uint32_t  RxMaxServiced;
+    uint32_t  RxPacketsServiced;
+    uint32_t  NumRxInt;
+#endif
+} cppi_rxcntl;
+
+typedef struct cppi_info
+{
+    struct cppi_txcntl tx_ctl[CPPI_NUM_CHANNELS];
+    struct cppi_rxcntl rx_ctl[CPPI_NUM_CHANNELS];
+
+    uint8_t dma_mem[CPPI_INFO_MEM_SIZE];
+    int dma_size;
+    dma_addr_t dma_handle;
+
+} cppi_info;
+
+#define tnetv_cppi_rx_int_recv_check(cppi, ch) (((cppi)->rx_ctl[(ch)].RxFakeRcvHead) ? 1 : 0)
+
+int tnetv_cppi_init_tcb(struct cppi_info *cppi, int ch);
+int tnetv_cppi_flush_tx_queue(struct cppi_info *cppi, int ch);
+int tnetv_cppi_send(struct cppi_info *cppi, int ch, dma_addr_t buf, unsigned length, int send_zlp);
+int tnetv_cppi_tx_int(struct cppi_info *cppi, int ch);
+void tnetv_cppi_free_tcb(struct cppi_info *cppi, int ch);
+
+int tnetv_cppi_init_rcb(struct cppi_info *cppi, int ch);
+int tnetv_cppi_flush_rx_queue(struct cppi_info *cppi, int ch);
+int tnetv_cppi_rx_return(struct cppi_info *cppi, int ch, cppi_rcb *done_rcb);
+int tnetv_cppi_rx_queue_add(struct cppi_info *cppi, int ch, dma_addr_t buf, unsigned length);
+int tnetv_cppi_rx_int(struct cppi_info *cppi, int ch);
+int tnetv_cppi_rx_int_recv(struct cppi_info *cppi, int ch, int *buf_size, void *buf, int maxpacket);
+void tnetv_cppi_free_rcb(struct cppi_info *cppi, int ch);
+
+void tnetv_cppi_init(struct cppi_info *cppi);
+void tnetv_cppi_cleanup(struct cppi_info *cppi);
+
+void tnetv_cppi_dump_info(struct cppi_info *cppi);
+
+#endif