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>
diff --git a/drivers/net/wireless/wl12xx/wl1251_rx.c b/drivers/net/wireless/wl12xx/wl1251_rx.c
new file mode 100644
index 0000000..d73e014
--- /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;
+}