* Copyright (c) 2000-2005 ZyDAS Technology Corporation
* Copyright (c) 2007-2009 Atheros Communications, Inc.
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009, 2010 Christian Lamparter <chunkeey@googlemail.com>
+ * 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
* 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.
+ * with this program; If not, see <http://www.gnu.org/licenses/>.
*/
#include "carl9170.h"
#include "wl.h"
#include "printf.h"
-struct ar9170_dma_memory dma_mem __section(sram);
+struct ar9170_dma_memory dma_mem __in_section(sram);
static void copy_dma_desc(struct dma_desc *dst,
struct dma_desc *src)
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.
/* Assign terminators to DMA queues */
i = 0;
- fw.pta.up_queue.head = fw.pta.up_queue.terminator = &dma_mem.terminator[i++];
- fw.pta.down_queue.head = fw.pta.down_queue.terminator = &dma_mem.terminator[i++];
+ 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++)
- fw.wlan.tx_queue[j].head = fw.wlan.tx_queue[j].terminator = &dma_mem.terminator[i++];
- fw.wlan.rx_queue.head = fw.wlan.rx_queue.terminator = &dma_mem.terminator[i++];
+ 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
- fw.wlan.cab_queue.head = fw.wlan.cab_queue.terminator = &dma_mem.terminator[i++];
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
- fw.wlan.ba_desc = &dma_mem.terminator[i++];
-#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
+ for (j = 0; j < CARL9170_INTF_NUM; j++)
+ init_queue(&fw.wlan.cab_queue[j], &dma_mem.terminator[i++]);
-#ifdef CONFIG_CARL9170FW_DELAYED_TX
- fw.wlan.tx_retry.head = fw.wlan.tx_retry.terminator = &dma_mem.terminator[i++];
-
- for (j = 0; j < __AR9170_NUM_TX_QUEUES; j++)
- fw.wlan.tx_delay[j].head = fw.wlan.tx_delay[j].terminator = &dma_mem.terminator[i++];
-#endif /* CONFIG_CARL9170FW_DELAYED_TX */
+ BUG_ON(AR9170_TERMINATOR_NUMBER != i);
DBG("Blocks:%d [tx:%d, rx:%d] Terminators:%d/%d\n",
AR9170_BLOCK_NUMBER, AR9170_TX_BLOCK_NUMBER,
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->status = AR9170_OWN_BITS_SW;
- fw.usb.int_desc->ctrl = (AR9170_CTRL_LS_BIT | AR9170_CTRL_FS_BIT);
fw.usb.int_desc->dataSize = AR9170_BLOCK_SIZE;
- fw.usb.int_desc->totalLen = 0;
- fw.usb.int_desc->lastAddr = fw.usb.int_desc;
fw.usb.int_desc->dataAddr = (void *) &dma_mem.reserved.rsp;
- fw.usb.int_desc->nextAddr = (void *) 0;
memset(DESC_PAYLOAD(fw.usb.int_desc), 0xff,
AR9170_INT_MAGIC_HEADER_SIZE);
/* rsp is now available for use */
fw.usb.int_desc_available = 1;
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
- fw.wlan.ba_desc->status = AR9170_OWN_BITS_SW;
- fw.wlan.ba_desc->ctrl = (AR9170_CTRL_LS_BIT | AR9170_CTRL_FS_BIT);
- fw.wlan.ba_desc->dataSize = fw.wlan.ba_desc->totalLen =
- sizeof(struct carl9170_tx_superdesc) +
- sizeof(struct ar9170_tx_hwdesc) +
- sizeof(struct ieee80211_ba) + FCS_LEN;
- fw.wlan.ba_desc->lastAddr = fw.wlan.ba_desc;
- fw.wlan.ba_desc->nextAddr = fw.wlan.ba_desc;
- fw.wlan.ba_desc->dataAddr = (void *) &dma_mem.reserved.ba;
-
- memset(DESC_PAYLOAD(fw.wlan.ba_desc), 0, 128);
-
- fw.wlan.ba_desc_available = 1;
-#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
+ memset(DESC_PAYLOAD(fw.wlan.fw_desc), 0, 128);
+ fw.wlan.fw_desc_available = 1;
}
/*
*/
void dma_reclaim(struct dma_queue *q, struct dma_desc *desc)
{
- struct dma_desc *tmpDesc;
+ 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;
/* TODO : Exception handle */
- if (desc->lastAddr == tmpDesc)
+ tmpDesc->lastAddr = tmpDesc;
+
+ if (tmpDesc == last)
break;
- tmpDesc->lastAddr = desc->lastAddr;
tmpDesc = tmpDesc->nextAddr;
}
/* 2. Next address of Last TD to be added = first TD */
- desc->lastAddr->nextAddr = desc;
+ 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. set first TD OWN bit to SW */
- desc->status = AR9170_OWN_BITS_SW;
+ /* 4. Initialize new terminator */
+ clear_descriptor(desc);
/* 5. Copy TTD to last TD */
- tdesc.status &= (~AR9170_OWN_BITS);
+ tdesc.status = 0;
copy_dma_desc((void *)q->terminator, (void *)&tdesc);
q->terminator->status |= AR9170_OWN_BITS_HW;
/* 3. Copy first TD to be added to TTD */
copy_dma_desc(&tdesc, desc);
- /* 4. set first TD OWN bit to SW */
- desc->status = AR9170_OWN_BITS_SW;
- desc->ctrl = 0;
- desc->totalLen = 0;
- desc->dataSize = 0;
- desc->lastAddr = desc;
- desc->nextAddr = desc;
- desc->dataAddr = NULL;
+ /* 4. Initialize new terminator */
+ clear_descriptor(desc);
/* 5. Copy TTD to last TD */
tdesc.status &= (~AR9170_OWN_BITS);
projects / carl9170fw.git / blobdiff