--- /dev/null
+/*
+ * Copyright (c) 2013 Qualcomm Atheros, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted (subject to the limitations in the
+ * disclaimer below) provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * 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.
+ *
+ * * Neither the name of Qualcomm Atheros nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
+ * GRANTED BY THIS LICENSE. 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.
+ */
+/************************************************************************/
+/* Copyright (c) 2013 Qualcomm Atheros, All Rights Reserved. */
+/* */
+/* Module Name : desc.c */
+/* */
+/* Abstract */
+/* This module contains DMA descriptors handle functions. */
+/* */
+/* ROUTINES */
+/* */
+/* zfDmaInitDescriptor */
+/* zfDmaGetPacket */
+/* zfDmaReclaimPacket */
+/* zfDmaPutPacket */
+/* */
+/* NOTES */
+/* None */
+/* */
+/************************************************************************/
+#include "dt_defs.h"
+#include "string.h"
+//#include "gv_extr.h"
+#include "reg_defs.h"
+//#include "uart_extr.h"
+#include <osapi.h>
+//#include <HIF_api.h>
+//#include "HIF_usb.h"
+#include <Magpie_api.h>
+#include <vdesc_api.h>
+#include "desc.h"
+
+/* Function prototypes */
+//void zfDmaInitDescriptor(void);
+struct zsDmaDesc* zfDmaGetPacket(struct zsDmaQueue* q);
+void zfDmaReclaimPacket(struct zsDmaQueue* q, struct zsDmaDesc* desc);
+void zfDmaPutPacket(struct zsDmaQueue* q, struct zsDmaDesc* desc);
+
+/************************************************************************/
+/* */
+/* FUNCTION DESCRIPTION zfDmaGetPacket */
+/* Get a completed packet with # descriptors. Return the first */
+/* descriptor and pointer the head directly by lastAddr->nextAddr */
+/* */
+/* ROUTINES CALLED */
+/* */
+/* INPUTS */
+/* struct zsDmaQueue* q */
+/* */
+/* OUTPUTS */
+/* struct zsDmaDesc* desc */
+/* */
+/* AUTHOR */
+/* Stephen Chen ZyDAS Communication Corporation 2005.10 */
+/* */
+/* NOTES */
+/* */
+/************************************************************************/
+struct zsDmaDesc* zfDmaGetPacket(struct zsDmaQueue* q)
+{
+ struct zsDmaDesc* desc = NULL;
+
+ if(q->head == q->terminator)
+ return NULL;
+
+ if (((q->head->status & ZM_OWN_BITS_MASK) == ZM_OWN_BITS_SW)
+ || ((q->head->status & ZM_OWN_BITS_MASK) == ZM_OWN_BITS_SE))
+
+ //if ( (((q->head->status & ZM_OWN_BITS_MASK) == ZM_OWN_BITS_SW) && ((u32_t)q != (u32_t)&zgDnQ))
+ // || (((q->head->status & ZM_OWN_BITS_MASK) == ZM_OWN_BITS_SE) && ((u32_t)q == (u32_t)&zgDnQ)) )
+
+ {
+ desc = q->head;
+
+ q->head = desc->lastAddr->nextAddr;
+ }
+ return desc;
+}
+
+/************************************************************************/
+/* */
+/* FUNCTION DESCRIPTION zfDmaReclaimPacket */
+/* Free descriptor. */
+/* Exchange the terminator and the first descriptor of the packet */
+/* for hardware ascy... . */
+/* */
+/* ROUTINES CALLED */
+/* */
+/* INPUTS */
+/* struct zsDmaQueue* q */
+/* struct zsDmaDesc* desc */
+/* */
+/* OUTPUTS */
+/* */
+/* AUTHOR */
+/* Stephen Chen ZyDAS Communication Corporation 2005.10 */
+/* */
+/* NOTES */
+/* */
+/************************************************************************/
+void zfDmaReclaimPacket(struct zsDmaQueue* q, struct zsDmaDesc* desc)
+{
+ struct zsDmaDesc* tmpDesc;
+ struct zsDmaDesc tdesc;
+ VDESC *vdesc;
+ VDESC *vtermdesc;
+ //int tmp;
+ //u8_t *tmpAddr;
+
+ /* 1. Set OWN bit to 1 for all TDs to be added, clear ctrl and size */
+ tmpDesc = desc;
+ while (1)
+ {
+ tmpDesc->status = ZM_OWN_BITS_HW;
+ tmpDesc->ctrl = 0;
+ tmpDesc->totalLen = 0;
+
+#if ZM_FM_LOOPBACK == 1
+ vdesc = VDESC_HW_TO_VDESC(tmpDesc);
+ tmpDesc->dataSize = vdesc->buf_size;
+#endif
+
+ //A_PRINTF("tmpDesc->dataSize = %d\n", (u32_t)tmpDesc->dataSize);
+
+ /* TODO : Exception handle */
+ if (desc->lastAddr == tmpDesc)
+ {
+ break;
+ }
+ tmpDesc = tmpDesc->nextAddr;
+ }
+
+ /* 3. Next address of Last TD to be added = first TD */
+ desc->lastAddr->nextAddr = desc;
+
+ /* 2. Copy first TD to be added to TTD */
+ //zfMemoryCopyInWord(&tdesc, desc, sizeof(struct zsDmaDesc));
+ A_MEMCPY(&tdesc, desc, sizeof(struct zsDmaDesc));
+
+ /* 4. set first TD OWN bit to 0 */
+ desc->status &= (~ZM_OWN_BITS_MASK);
+
+ /* 5. Copy TTD to last TD */
+ tdesc.status &= (~ZM_OWN_BITS_MASK);
+
+ vdesc = VDESC_HW_TO_VDESC(desc);
+ vtermdesc = VDESC_HW_TO_VDESC(q->terminator);
+
+ VDESC_swap_vdesc(vtermdesc, vdesc);
+
+ //zfMemoryCopyInWord((void*)q->terminator, (void*)&tdesc, sizeof(struct zsDmaDesc));
+ A_MEMCPY((void*)q->terminator, (void*)&tdesc, sizeof(struct zsDmaDesc));
+
+ //desc->dataSize = 0;
+ //desc->dataAddr = 0;
+ q->terminator->status |= ZM_OWN_BITS_HW;
+
+ /* Update terminator pointer */
+ q->terminator = desc;
+}
+
+/************************************************************************/
+/* */
+/* FUNCTION DESCRIPTION zfDmaPutPacket */
+/* Put a complete packet into the tail of the Queue q. */
+/* Exchange the terminator and the first descriptor of the packet */
+/* for hardware ascy... . */
+/* */
+/* ROUTINES CALLED */
+/* */
+/* INPUTS */
+/* struct zsDmaQueue* q */
+/* struct zsDmaDesc* desc */
+/* */
+/* OUTPUTS */
+/* */
+/* AUTHOR */
+/* Stephen Chen ZyDAS Communication Corporation 2005.10 */
+/* */
+/* NOTES */
+/* */
+/************************************************************************/
+void zfDmaPutPacket(struct zsDmaQueue* q, struct zsDmaDesc* desc)
+{
+ struct zsDmaDesc* tmpDesc;
+ struct zsDmaDesc tdesc;
+ VDESC *vdesc;
+ VDESC *vtermdesc;
+ //u32_t tmp;
+ //u8_t *tmpAddr;
+
+ /* 1. Set OWN bit to 1 for all TDs to be added */
+ tmpDesc = desc;
+ while (1)
+ {
+ tmpDesc->status =
+ ((tmpDesc->status & (~ZM_OWN_BITS_MASK)) | ZM_OWN_BITS_HW);
+ /* TODO : Exception handle */
+
+ if (desc->lastAddr == tmpDesc)
+ {
+ break;
+ }
+ tmpDesc = tmpDesc->nextAddr;
+ }
+
+ /* 3. Next address of Last TD to be added = first TD */
+ desc->lastAddr->nextAddr = desc;
+
+ /* If there is only one descriptor, update pointer of last descriptor */
+ if (desc->lastAddr == desc)
+ {
+ desc->lastAddr = q->terminator;
+ }
+
+ /* 2. Copy first TD to be added to TTD */
+ A_MEMCPY(&tdesc, desc, sizeof(struct zsDmaDesc));
+ //tdesc.dataSize = 0;
+ //tdesc.dataAddr = 0;
+
+ /* 4. set first TD OWN bit to 0 */
+ desc->status &= (~ZM_OWN_BITS_MASK);
+
+ /* 5. Copy TTD to last TD */
+ tdesc.status &= (~ZM_OWN_BITS_MASK);
+
+ vdesc = VDESC_HW_TO_VDESC(desc);
+ vtermdesc = VDESC_HW_TO_VDESC(q->terminator);
+
+ VDESC_swap_vdesc(vtermdesc, vdesc);
+
+ A_MEMCPY((void*)q->terminator, (void*)&tdesc, sizeof(struct zsDmaDesc));
+ q->terminator->status |= ZM_OWN_BITS_HW;
+ /* Update terminator pointer */
+ q->terminator = desc;
+}
+
projects / open-ath9k-htc-firmware.git / blobdiff