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-rw-r--r--carl9170fw/carlfw/src/dma.c255
1 files changed, 0 insertions, 255 deletions
diff --git a/carl9170fw/carlfw/src/dma.c b/carl9170fw/carlfw/src/dma.c
deleted file mode 100644
index 9b83fcf..0000000
--- a/carl9170fw/carlfw/src/dma.c
+++ /dev/null
@@ -1,255 +0,0 @@
-/*
- * carl9170 firmware - used by the ar9170 wireless device
- *
- * DMA descriptor handling functions
- *
- * Copyright (c) 2000-2005 ZyDAS Technology Corporation
- * Copyright (c) 2007-2009 Atheros Communications, Inc.
- * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
- *
- * 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 program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "carl9170.h"
-#include "wl.h"
-#include "printf.h"
-
-struct ar9170_dma_memory dma_mem __section(sram);
-
-static void copy_dma_desc(struct dma_desc *dst,
- struct dma_desc *src)
-{
- memcpy(dst, src, sizeof(struct dma_desc));
-}
-
-static void clear_descriptor(struct dma_desc *d)
-{
- d->status = AR9170_OWN_BITS_SW;
- d->ctrl = 0;
- d->dataSize = 0;
- d->totalLen = 0;
- d->lastAddr = d;
- d->dataAddr = NULL;
- d->nextAddr = d;
-}
-
-static void fill_descriptor(struct dma_desc *d, uint16_t size, uint8_t *data)
-{
- d->status = AR9170_OWN_BITS_SW;
- d->ctrl = 0;
- d->dataSize = size;
- d->totalLen = 0;
- d->lastAddr = d;
- d->dataAddr = data;
- d->nextAddr = NULL;
-}
-
-static void init_queue(struct dma_queue *q, struct dma_desc *d)
-{
- q->head = q->terminator = d;
-}
-
-/*
- * - Init up_queue, down_queue, tx_queue[5], rx_queue.
- * - Setup descriptors and data buffer address.
- * - Ring descriptors rx_queue and down_queue by dma_reclaim().
- *
- * NOTE: LastAddr tempary point (same) to nextAddr after initialize.
- * Because LastAddr is don't care in function dma_reclaim().
- */
-void dma_init_descriptors(void)
-{
- unsigned int i, j;
-
- for (i = 0; i < ARRAY_SIZE(dma_mem.terminator); i++)
- clear_descriptor(&dma_mem.terminator[i]);
-
- /* Assign terminators to DMA queues */
- i = 0;
- init_queue(&fw.pta.up_queue, &dma_mem.terminator[i++]);
- init_queue(&fw.pta.down_queue, &dma_mem.terminator[i++]);
- for (j = 0; j < __AR9170_NUM_TX_QUEUES; j++)
- init_queue(&fw.wlan.tx_queue[j], &dma_mem.terminator[i++]);
- init_queue(&fw.wlan.tx_retry, &dma_mem.terminator[i++]);
- init_queue(&fw.wlan.rx_queue, &dma_mem.terminator[i++]);
- fw.usb.int_desc = &dma_mem.terminator[i++];
- fw.wlan.fw_desc = &dma_mem.terminator[i++];
-
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
- for (j = 0; j < CARL9170_INTF_NUM; j++)
- init_queue(&fw.wlan.cab_queue[j], &dma_mem.terminator[i++]);
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
- BUG_ON(AR9170_TERMINATOR_NUMBER != i);
-
- DBG("Blocks:%d [tx:%d, rx:%d] Terminators:%d/%d\n",
- AR9170_BLOCK_NUMBER, AR9170_TX_BLOCK_NUMBER,
- AR9170_RX_BLOCK_NUMBER, AR9170_TERMINATOR_NUMBER, i);
-
- /* Init descriptors and memory blocks */
- for (i = 0; i < AR9170_BLOCK_NUMBER; i++) {
- fill_descriptor(&dma_mem.block[i], AR9170_BLOCK_SIZE, dma_mem.data[i].data);
-
- if (i < AR9170_TX_BLOCK_NUMBER)
- dma_reclaim(&fw.pta.down_queue, &dma_mem.block[i]);
- else
- dma_reclaim(&fw.wlan.rx_queue, &dma_mem.block[i]);
- }
-
- /* Set DMA address registers */
- set(AR9170_PTA_REG_DN_DMA_ADDRH, (uint32_t) fw.pta.down_queue.head >> 16);
- set(AR9170_PTA_REG_DN_DMA_ADDRL, (uint32_t) fw.pta.down_queue.head & 0xffff);
- set(AR9170_PTA_REG_UP_DMA_ADDRH, (uint32_t) fw.pta.up_queue.head >> 16);
- set(AR9170_PTA_REG_UP_DMA_ADDRL, (uint32_t) fw.pta.up_queue.head & 0xffff);
-
- for (i = 0; i < __AR9170_NUM_TX_QUEUES; i++)
- set_wlan_txq_dma_addr(i, (uint32_t) fw.wlan.tx_queue[i].head);
-
- set(AR9170_MAC_REG_DMA_RXQ_ADDR, (uint32_t) fw.wlan.rx_queue.head);
- fw.usb.int_desc->dataSize = AR9170_BLOCK_SIZE;
- fw.usb.int_desc->dataAddr = (void *) &dma_mem.reserved.rsp;
-
- memset(DESC_PAYLOAD(fw.usb.int_desc), 0xff,
- AR9170_INT_MAGIC_HEADER_SIZE);
- memset(DESC_PAYLOAD_OFF(fw.usb.int_desc, AR9170_INT_MAGIC_HEADER_SIZE),
- 0, AR9170_BLOCK_SIZE - AR9170_INT_MAGIC_HEADER_SIZE);
-
- /* rsp is now available for use */
- fw.usb.int_desc_available = 1;
-
- memset(DESC_PAYLOAD(fw.wlan.fw_desc), 0, 128);
- fw.wlan.fw_desc_available = 1;
-}
-
-/*
- * Free descriptor.
- *
- * Exchange the terminator and the first descriptor of the packet
- * for hardware ascy...
- */
-void dma_reclaim(struct dma_queue *q, struct dma_desc *desc)
-{
- struct dma_desc *tmpDesc, *last;
- struct dma_desc tdesc;
-
- /* 1. Set OWN bit to HW for all TDs to be added, clear ctrl and size */
- tmpDesc = desc;
- last = desc->lastAddr;
-
- while (1) {
- tmpDesc->status = AR9170_OWN_BITS_HW;
- tmpDesc->ctrl = 0;
- tmpDesc->totalLen = 0;
- tmpDesc->dataSize = AR9170_BLOCK_SIZE;
-
- /* TODO : Exception handle */
-
- tmpDesc->lastAddr = tmpDesc;
-
- if (tmpDesc == last)
- break;
-
- tmpDesc = tmpDesc->nextAddr;
- }
-
- /* 2. Next address of Last TD to be added = first TD */
- tmpDesc->nextAddr = desc;
-
- /* Link first TD to self */
- desc->lastAddr = q->terminator;
-
- /* 3. Copy first TD to be added to TTD */
- copy_dma_desc(&tdesc, desc);
-
- /* 4. Initialize new terminator */
- clear_descriptor(desc);
-
- /* 5. Copy TTD to last TD */
- tdesc.status = 0;
- copy_dma_desc((void *)q->terminator, (void *)&tdesc);
- q->terminator->status |= AR9170_OWN_BITS_HW;
-
- /* Update terminator pointer */
- q->terminator = desc;
-}
-
-/*
- * Put a complete packet into the tail of the Queue q.
- * Exchange the terminator and the first descriptor of the packet
- * for hardware ascy...
- */
-void dma_put(struct dma_queue *q, struct dma_desc *desc)
-{
- struct dma_desc *tmpDesc;
- struct dma_desc tdesc;
-
- tmpDesc = desc;
-
- while (1) {
- /* update totalLen */
- tmpDesc->totalLen = desc->totalLen;
-
- /* 1. Set OWN bit to HW for all TDs to be added */
- tmpDesc->status = AR9170_OWN_BITS_HW;
- /* TODO : Exception handle */
-
- tmpDesc->lastAddr = desc->lastAddr;
-
- if (desc->lastAddr == tmpDesc)
- break;
-
- tmpDesc = tmpDesc->nextAddr;
- }
-
- /* 2. 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;
-
- /* 3. Copy first TD to be added to TTD */
- copy_dma_desc(&tdesc, desc);
-
- /* 4. Initialize new terminator */
- clear_descriptor(desc);
-
- /* 5. Copy TTD to last TD */
- tdesc.status &= (~AR9170_OWN_BITS);
- copy_dma_desc((void *)q->terminator, (void *)&tdesc);
- q->terminator->status |= AR9170_OWN_BITS_HW;
-
- /* Update terminator pointer */
- q->terminator = desc;
-}
-
-struct dma_desc *dma_unlink_head(struct dma_queue *queue)
-{
- struct dma_desc *desc;
-
- if (queue_empty(queue))
- return NULL;
-
- desc = queue->head;
-
- queue->head = desc->lastAddr->nextAddr;
-
- /* poison nextAddr address */
- desc->lastAddr->nextAddr = desc->lastAddr;
- desc->lastAddr->lastAddr = desc->lastAddr;
-
- return desc;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 09:42:08 +0000