wl1251: add wl1251 prefix to all 1251 files

Now that all 1271 files are split, we can add wl1251_ prefix to the files.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 195 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251_rx.c b/drivers/net/wireless/wl12xx/wl1251_rx.c
new file mode 100644
index 00000000000..d73e014d611
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1251_rx.c
@@ -0,0 +1,195 @@
+/*
+ * This file is part of wl12xx
+ *
+ * Copyright (c) 1998-2007 Texas Instruments Incorporated
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * Contact: Kalle Valo <kalle.valo@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/skbuff.h>
+#include <net/mac80211.h>
+
+#include "wl12xx.h"
+#include "reg.h"
+#include "wl1251_spi.h"
+#include "wl1251_rx.h"
+#include "wl1251_acx.h"
+
+static void wl12xx_rx_header(struct wl12xx *wl,
+			     struct wl12xx_rx_descriptor *desc)
+{
+	u32 rx_packet_ring_addr;
+
+	rx_packet_ring_addr = wl->data_path->rx_packet_ring_addr;
+	if (wl->rx_current_buffer)
+		rx_packet_ring_addr += wl->data_path->rx_packet_ring_chunk_size;
+
+	wl12xx_spi_mem_read(wl, rx_packet_ring_addr, desc, sizeof(*desc));
+}
+
+static void wl12xx_rx_status(struct wl12xx *wl,
+			     struct wl12xx_rx_descriptor *desc,
+			     struct ieee80211_rx_status *status,
+			     u8 beacon)
+{
+	u64 mactime;
+	int ret;
+
+	memset(status, 0, sizeof(struct ieee80211_rx_status));
+
+	status->band = IEEE80211_BAND_2GHZ;
+	status->mactime = desc->timestamp;
+
+	/*
+	 * The rx status timestamp is a 32 bits value while the TSF is a
+	 * 64 bits one.
+	 * For IBSS merging, TSF is mandatory, so we have to get it
+	 * somehow, so we ask for ACX_TSF_INFO.
+	 * That could be moved to the get_tsf() hook, but unfortunately,
+	 * this one must be atomic, while our SPI routines can sleep.
+	 */
+	if ((wl->bss_type == BSS_TYPE_IBSS) && beacon) {
+		ret = wl12xx_acx_tsf_info(wl, &mactime);
+		if (ret == 0)
+			status->mactime = mactime;
+	}
+
+	status->signal = desc->rssi;
+	status->qual = (desc->rssi - WL12XX_RX_MIN_RSSI) * 100 /
+		(WL12XX_RX_MAX_RSSI - WL12XX_RX_MIN_RSSI);
+	status->qual = min(status->qual, 100);
+	status->qual = max(status->qual, 0);
+
+	/*
+	 * FIXME: guessing that snr needs to be divided by two, otherwise
+	 * the values don't make any sense
+	 */
+	status->noise = desc->rssi - desc->snr / 2;
+
+	status->freq = ieee80211_channel_to_frequency(desc->channel);
+
+	status->flag |= RX_FLAG_TSFT;
+
+	if (desc->flags & RX_DESC_ENCRYPTION_MASK) {
+		status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED;
+
+		if (likely(!(desc->flags & RX_DESC_DECRYPT_FAIL)))
+			status->flag |= RX_FLAG_DECRYPTED;
+
+		if (unlikely(desc->flags & RX_DESC_MIC_FAIL))
+			status->flag |= RX_FLAG_MMIC_ERROR;
+	}
+
+	if (unlikely(!(desc->flags & RX_DESC_VALID_FCS)))
+		status->flag |= RX_FLAG_FAILED_FCS_CRC;
+
+
+	/* FIXME: set status->rate_idx */
+}
+
+static void wl12xx_rx_body(struct wl12xx *wl,
+			   struct wl12xx_rx_descriptor *desc)
+{
+	struct sk_buff *skb;
+	struct ieee80211_rx_status status;
+	u8 *rx_buffer, beacon = 0;
+	u16 length, *fc;
+	u32 curr_id, last_id_inc, rx_packet_ring_addr;
+
+	length = WL12XX_RX_ALIGN(desc->length  - PLCP_HEADER_LENGTH);
+	curr_id = (desc->flags & RX_DESC_SEQNUM_MASK) >> RX_DESC_PACKETID_SHIFT;
+	last_id_inc = (wl->rx_last_id + 1) % (RX_MAX_PACKET_ID + 1);
+
+	if (last_id_inc != curr_id) {
+		wl12xx_warning("curr ID:%d, last ID inc:%d",
+			       curr_id, last_id_inc);
+		wl->rx_last_id = curr_id;
+	} else {
+		wl->rx_last_id = last_id_inc;
+	}
+
+	rx_packet_ring_addr = wl->data_path->rx_packet_ring_addr +
+		sizeof(struct wl12xx_rx_descriptor) + 20;
+	if (wl->rx_current_buffer)
+		rx_packet_ring_addr += wl->data_path->rx_packet_ring_chunk_size;
+
+	skb = dev_alloc_skb(length);
+	if (!skb) {
+		wl12xx_error("Couldn't allocate RX frame");
+		return;
+	}
+
+	rx_buffer = skb_put(skb, length);
+	wl12xx_spi_mem_read(wl, rx_packet_ring_addr, rx_buffer, length);
+
+	/* The actual lenght doesn't include the target's alignment */
+	skb->len = desc->length  - PLCP_HEADER_LENGTH;
+
+	fc = (u16 *)skb->data;
+
+	if ((*fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)
+		beacon = 1;
+
+	wl12xx_rx_status(wl, desc, &status, beacon);
+
+	wl12xx_debug(DEBUG_RX, "rx skb 0x%p: %d B %s", skb, skb->len,
+		     beacon ? "beacon" : "");
+
+	ieee80211_rx(wl->hw, skb, &status);
+}
+
+static void wl12xx_rx_ack(struct wl12xx *wl)
+{
+	u32 data, addr;
+
+	if (wl->rx_current_buffer) {
+		addr = ACX_REG_INTERRUPT_TRIG_H;
+		data = INTR_TRIG_RX_PROC1;
+	} else {
+		addr = ACX_REG_INTERRUPT_TRIG;
+		data = INTR_TRIG_RX_PROC0;
+	}
+
+	wl12xx_reg_write32(wl, addr, data);
+
+	/* Toggle buffer ring */
+	wl->rx_current_buffer = !wl->rx_current_buffer;
+}
+
+
+void wl12xx_rx(struct wl12xx *wl)
+{
+	struct wl12xx_rx_descriptor *rx_desc;
+
+	if (wl->state != WL12XX_STATE_ON)
+		return;
+
+	rx_desc = wl->rx_descriptor;
+
+	/* We first read the frame's header */
+	wl12xx_rx_header(wl, rx_desc);
+
+	/* Now we can read the body */
+	wl12xx_rx_body(wl, rx_desc);
+
+	/* Finally, we need to ACK the RX */
+	wl12xx_rx_ack(wl);
+
+	return;
+}