1 files changed, 0 insertions, 398 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.c b/drivers/net/wireless/wl12xx/wl1271_tx.c
deleted file mode 100644
index 00af065c77c..00000000000
--- a/drivers/net/wireless/wl12xx/wl1271_tx.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/*
- * This file is part of wl1271
- *
- * Copyright (C) 2009 Nokia Corporation
- *
- * Contact: Luciano Coelho <luciano.coelho@nokia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * 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 St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-
-#include "wl1271.h"
-#include "wl1271_spi.h"
-#include "wl1271_reg.h"
-#include "wl1271_ps.h"
-#include "wl1271_tx.h"
-
-static int wl1271_tx_id(struct wl1271 *wl, struct sk_buff *skb)
-{
-	int i;
-	for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
-		if (wl->tx_frames[i] == NULL) {
-			wl->tx_frames[i] = skb;
-			return i;
-		}
-
-	return -EBUSY;
-}
-
-static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra)
-{
-	struct wl1271_tx_hw_descr *desc;
-	u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra;
-	u32 total_blocks, excluded;
-	int id, ret = -EBUSY;
-
-	/* allocate free identifier for the packet */
-	id = wl1271_tx_id(wl, skb);
-	if (id < 0)
-		return id;
-
-	/* approximate the number of blocks required for this packet
-	   in the firmware */
-	/* FIXME: try to figure out what is done here and make it cleaner */
-	total_blocks = (total_len + 20) >> TX_HW_BLOCK_SHIFT_DIV;
-	excluded = (total_blocks << 2) + ((total_len + 20) & 0xff) + 34;
-	total_blocks += (excluded > 252) ? 2 : 1;
-	total_blocks += TX_HW_BLOCK_SPARE;
-
-	if (total_blocks <= wl->tx_blocks_available) {
-		desc = (struct wl1271_tx_hw_descr *)skb_push(
-			skb, total_len - skb->len);
-
-		desc->extra_mem_blocks = TX_HW_BLOCK_SPARE;
-		desc->total_mem_blocks = total_blocks;
-		desc->id = id;
-
-		wl->tx_blocks_available -= total_blocks;
-
-		ret = 0;
-
-		wl1271_debug(DEBUG_TX,
-			     "tx_allocate: size: %d, blocks: %d, id: %d",
-			     total_len, total_blocks, id);
-	} else
-		wl->tx_frames[id] = NULL;
-
-	return ret;
-}
-
-static int wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
-			      u32 extra, struct ieee80211_tx_info *control)
-{
-	struct wl1271_tx_hw_descr *desc;
-	int pad;
-	u16 tx_attr;
-
-	desc = (struct wl1271_tx_hw_descr *) skb->data;
-
-	/* relocate space for security header */
-	if (extra) {
-		void *framestart = skb->data + sizeof(*desc);
-		u16 fc = *(u16 *)(framestart + extra);
-		int hdrlen = ieee80211_hdrlen(cpu_to_le16(fc));
-		memmove(framestart, framestart + extra, hdrlen);
-	}
-
-	/* configure packet life time */
-	desc->start_time = cpu_to_le32(jiffies_to_usecs(jiffies) -
-				       wl->time_offset);
-	desc->life_time = cpu_to_le16(TX_HW_MGMT_PKT_LIFETIME_TU);
-
-	/* configure the tx attributes */
-	tx_attr = wl->session_counter << TX_HW_ATTR_OFST_SESSION_COUNTER;
-	/* FIXME: do we know the packet priority? can we identify mgmt
-	   packets, and use max prio for them at least? */
-	desc->tid = 0;
-	desc->aid = TX_HW_DEFAULT_AID;
-	desc->reserved = 0;
-
-	/* align the length (and store in terms of words) */
-	pad = WL1271_TX_ALIGN(skb->len);
-	desc->length = cpu_to_le16(pad >> 2);
-
-	/* calculate number of padding bytes */
-	pad = pad - skb->len;
-	tx_attr |= pad << TX_HW_ATTR_OFST_LAST_WORD_PAD;
-
-	desc->tx_attr = cpu_to_le16(tx_attr);
-
-	wl1271_debug(DEBUG_TX, "tx_fill_hdr: pad: %d", pad);
-	return 0;
-}
-
-static int wl1271_tx_send_packet(struct wl1271 *wl, struct sk_buff *skb,
-				 struct ieee80211_tx_info *control)
-{
-
-	struct wl1271_tx_hw_descr *desc;
-	int len;
-
-	/* FIXME: This is a workaround for getting non-aligned packets.
-	   This happens at least with EAPOL packets from the user space.
-	   Our DMA requires packets to be aligned on a 4-byte boundary.
-	*/
-	if (unlikely((long)skb->data & 0x03)) {
-		int offset = (4 - (long)skb->data) & 0x03;
-		wl1271_debug(DEBUG_TX, "skb offset %d", offset);
-
-		/* check whether the current skb can be used */
-		if (!skb_cloned(skb) && (skb_tailroom(skb) >= offset)) {
-			unsigned char *src = skb->data;
-
-			/* align the buffer on a 4-byte boundary */
-			skb_reserve(skb, offset);
-			memmove(skb->data, src, skb->len);
-		} else {
-			wl1271_info("No handler, fixme!");
-			return -EINVAL;
-		}
-	}
-
-	len = WL1271_TX_ALIGN(skb->len);
-
-	/* perform a fixed address block write with the packet */
-	wl1271_spi_write(wl, WL1271_SLV_MEM_DATA, skb->data, len, true);
-
-	/* write packet new counter into the write access register */
-	wl->tx_packets_count++;
-	wl1271_spi_write32(wl, WL1271_HOST_WR_ACCESS, wl->tx_packets_count);
-
-	desc = (struct wl1271_tx_hw_descr *) skb->data;
-	wl1271_debug(DEBUG_TX, "tx id %u skb 0x%p payload %u (%u words)",
-		     desc->id, skb, len, desc->length);
-
-	return 0;
-}
-
-/* caller must hold wl->mutex */
-static int wl1271_tx_frame(struct wl1271 *wl, struct sk_buff *skb)
-{
-	struct ieee80211_tx_info *info;
-	u32 extra = 0;
-	int ret = 0;
-	u8 idx;
-
-	if (!skb)
-		return -EINVAL;
-
-	info = IEEE80211_SKB_CB(skb);
-
-	if (info->control.hw_key &&
-	    info->control.hw_key->alg == ALG_TKIP)
-		extra = WL1271_TKIP_IV_SPACE;
-
-	if (info->control.hw_key) {
-		idx = info->control.hw_key->hw_key_idx;
-
-		/* FIXME: do we have to do this if we're not using WEP? */
-		if (unlikely(wl->default_key != idx)) {
-			ret = wl1271_cmd_set_default_wep_key(wl, idx);
-			if (ret < 0)
-				return ret;
-		}
-	}
-
-	ret = wl1271_tx_allocate(wl, skb, extra);
-	if (ret < 0)
-		return ret;
-
-	ret = wl1271_tx_fill_hdr(wl, skb, extra, info);
-	if (ret < 0)
-		return ret;
-
-	ret = wl1271_tx_send_packet(wl, skb, info);
-	if (ret < 0)
-		return ret;
-
-	return ret;
-}
-
-void wl1271_tx_work(struct work_struct *work)
-{
-	struct wl1271 *wl = container_of(work, struct wl1271, tx_work);
-	struct sk_buff *skb;
-	bool woken_up = false;
-	int ret;
-
-	mutex_lock(&wl->mutex);
-
-	if (unlikely(wl->state == WL1271_STATE_OFF))
-		goto out;
-
-	while ((skb = skb_dequeue(&wl->tx_queue))) {
-		if (!woken_up) {
-			ret = wl1271_ps_elp_wakeup(wl, false);
-			if (ret < 0)
-				goto out;
-			woken_up = true;
-		}
-
-		ret = wl1271_tx_frame(wl, skb);
-		if (ret == -EBUSY) {
-			/* firmware buffer is full, stop queues */
-			wl1271_debug(DEBUG_TX, "tx_work: fw buffer full, "
-				     "stop queues");
-			ieee80211_stop_queues(wl->hw);
-			wl->tx_queue_stopped = true;
-			skb_queue_head(&wl->tx_queue, skb);
-			goto out;
-		} else if (ret < 0) {
-			dev_kfree_skb(skb);
-			goto out;
-		} else if (wl->tx_queue_stopped) {
-			/* firmware buffer has space, restart queues */
-			wl1271_debug(DEBUG_TX,
-				     "complete_packet: waking queues");
-			ieee80211_wake_queues(wl->hw);
-			wl->tx_queue_stopped = false;
-		}
-	}
-
-out:
-	if (woken_up)
-		wl1271_ps_elp_sleep(wl);
-
-	mutex_unlock(&wl->mutex);
-}
-
-static void wl1271_tx_complete_packet(struct wl1271 *wl,
-				      struct wl1271_tx_hw_res_descr *result)
-{
-	struct ieee80211_tx_info *info;
-	struct sk_buff *skb;
-	u16 seq;
-	int id = result->id;
-
-	/* check for id legality */
-	if (id >= ACX_TX_DESCRIPTORS || wl->tx_frames[id] == NULL) {
-		wl1271_warning("TX result illegal id: %d", id);
-		return;
-	}
-
-	skb = wl->tx_frames[id];
-	info = IEEE80211_SKB_CB(skb);
-
-	/* update packet status */
-	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
-		if (result->status == TX_SUCCESS)
-			info->flags |= IEEE80211_TX_STAT_ACK;
-		if (result->status & TX_RETRY_EXCEEDED) {
-			/* FIXME */
-			/* info->status.excessive_retries = 1; */
-			wl->stats.excessive_retries++;
-		}
-	}
-
-	/* FIXME */
-	/* info->status.retry_count = result->ack_failures; */
-	wl->stats.retry_count += result->ack_failures;
-
-	/* update security sequence number */
-	seq = wl->tx_security_seq_16 +
-		(result->lsb_security_sequence_number -
-		 wl->tx_security_last_seq);
-	wl->tx_security_last_seq = result->lsb_security_sequence_number;
-
-	if (seq < wl->tx_security_seq_16)
-		wl->tx_security_seq_32++;
-	wl->tx_security_seq_16 = seq;
-
-	/* remove private header from packet */
-	skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
-
-	/* remove TKIP header space if present */
-	if (info->control.hw_key &&
-	    info->control.hw_key->alg == ALG_TKIP) {
-		int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
-		memmove(skb->data + WL1271_TKIP_IV_SPACE, skb->data, hdrlen);
-		skb_pull(skb, WL1271_TKIP_IV_SPACE);
-	}
-
-	wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p failures %u rate 0x%x"
-		     " status 0x%x",
-		     result->id, skb, result->ack_failures,
-		     result->rate_class_index, result->status);
-
-	/* return the packet to the stack */
-	ieee80211_tx_status(wl->hw, skb);
-	wl->tx_frames[result->id] = NULL;
-}
-
-/* Called upon reception of a TX complete interrupt */
-void wl1271_tx_complete(struct wl1271 *wl, u32 count)
-{
-	struct wl1271_acx_mem_map *memmap =
-		(struct wl1271_acx_mem_map *)wl->target_mem_map;
-	u32 i;
-
-	wl1271_debug(DEBUG_TX, "tx_complete received, packets: %d", count);
-
-	/* read the tx results from the chipset */
-	wl1271_spi_read(wl, le32_to_cpu(memmap->tx_result),
-			wl->tx_res_if, sizeof(*wl->tx_res_if), false);
-
-	/* verify that the result buffer is not getting overrun */
-	if (count > TX_HW_RESULT_QUEUE_LEN) {
-		wl1271_warning("TX result overflow from chipset: %d", count);
-		count = TX_HW_RESULT_QUEUE_LEN;
-	}
-
-	/* process the results */
-	for (i = 0; i < count; i++) {
-		struct wl1271_tx_hw_res_descr *result;
-		u8 offset = wl->tx_results_count & TX_HW_RESULT_QUEUE_LEN_MASK;
-
-		/* process the packet */
-		result =  &(wl->tx_res_if->tx_results_queue[offset]);
-		wl1271_tx_complete_packet(wl, result);
-
-		wl->tx_results_count++;
-	}
-
-	/* write host counter to chipset (to ack) */
-	wl1271_spi_write32(wl, le32_to_cpu(memmap->tx_result) +
-			   offsetof(struct wl1271_tx_hw_res_if,
-				    tx_result_host_counter),
-			   le32_to_cpu(wl->tx_res_if->tx_result_fw_counter));
-}
-
-/* caller must hold wl->mutex */
-void wl1271_tx_flush(struct wl1271 *wl)
-{
-	int i;
-	struct sk_buff *skb;
-	struct ieee80211_tx_info *info;
-
-	/* TX failure */
-/* 	control->flags = 0; FIXME */
-
-	while ((skb = skb_dequeue(&wl->tx_queue))) {
-		info = IEEE80211_SKB_CB(skb);
-
-		wl1271_debug(DEBUG_TX, "flushing skb 0x%p", skb);
-
-		if (!(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS))
-				continue;
-
-		ieee80211_tx_status(wl->hw, skb);
-	}
-
-	for (i = 0; i < ACX_TX_DESCRIPTORS; i++)
-		if (wl->tx_frames[i] != NULL) {
-			skb = wl->tx_frames[i];
-			info = IEEE80211_SKB_CB(skb);
-
-			if (!(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS))
-				continue;
-
-			ieee80211_tx_status(wl->hw, skb);
-			wl->tx_frames[i] = NULL;
-		}
-}