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0bc202b3bb
Move the functions into a separate module, in order to make those usable from other modules. Also move the TX descriptor related defines from rt2800pci.h into rt2800mmio.h. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/* Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
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* Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
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* Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
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* Copyright (C) 2009 Mattias Nissler <mattias.nissler@gmx.de>
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* Copyright (C) 2009 Mark Asselstine <asselsm@gmail.com>
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* Copyright (C) 2009 Xose Vazquez Perez <xose.vazquez@gmail.com>
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* Copyright (C) 2009 Bart Zolnierkiewicz <bzolnier@gmail.com>
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* <http://rt2x00.serialmonkey.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* Module: rt2800mmio
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* Abstract: rt2800 MMIO device routines.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/export.h>
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#include "rt2x00.h"
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#include "rt2x00mmio.h"
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#include "rt2800mmio.h"
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/*
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* TX descriptor initialization
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*/
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__le32 *rt2800mmio_get_txwi(struct queue_entry *entry)
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{
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return (__le32 *) entry->skb->data;
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}
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EXPORT_SYMBOL_GPL(rt2800mmio_get_txwi);
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void rt2800mmio_write_tx_desc(struct queue_entry *entry,
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struct txentry_desc *txdesc)
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{
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struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
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struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
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__le32 *txd = entry_priv->desc;
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u32 word;
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const unsigned int txwi_size = entry->queue->winfo_size;
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/*
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* The buffers pointed by SD_PTR0/SD_LEN0 and SD_PTR1/SD_LEN1
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* must contains a TXWI structure + 802.11 header + padding + 802.11
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* data. We choose to have SD_PTR0/SD_LEN0 only contains TXWI and
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* SD_PTR1/SD_LEN1 contains 802.11 header + padding + 802.11
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* data. It means that LAST_SEC0 is always 0.
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*/
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/*
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* Initialize TX descriptor
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*/
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word = 0;
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rt2x00_set_field32(&word, TXD_W0_SD_PTR0, skbdesc->skb_dma);
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rt2x00_desc_write(txd, 0, word);
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word = 0;
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rt2x00_set_field32(&word, TXD_W1_SD_LEN1, entry->skb->len);
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rt2x00_set_field32(&word, TXD_W1_LAST_SEC1,
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!test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
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rt2x00_set_field32(&word, TXD_W1_BURST,
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test_bit(ENTRY_TXD_BURST, &txdesc->flags));
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rt2x00_set_field32(&word, TXD_W1_SD_LEN0, txwi_size);
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rt2x00_set_field32(&word, TXD_W1_LAST_SEC0, 0);
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rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 0);
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rt2x00_desc_write(txd, 1, word);
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word = 0;
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rt2x00_set_field32(&word, TXD_W2_SD_PTR1,
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skbdesc->skb_dma + txwi_size);
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rt2x00_desc_write(txd, 2, word);
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word = 0;
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rt2x00_set_field32(&word, TXD_W3_WIV,
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!test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags));
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rt2x00_set_field32(&word, TXD_W3_QSEL, 2);
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rt2x00_desc_write(txd, 3, word);
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/*
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* Register descriptor details in skb frame descriptor.
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*/
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skbdesc->desc = txd;
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skbdesc->desc_len = TXD_DESC_SIZE;
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}
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EXPORT_SYMBOL_GPL(rt2800mmio_write_tx_desc);
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#include "rt2x00.h"
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MODULE_AUTHOR(DRV_PROJECT);
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MODULE_VERSION(DRV_VERSION);
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MODULE_DESCRIPTION("rt2800 MMIO library");
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MODULE_LICENSE("GPL");
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