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Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_rx.c')
-rw-r--r--drivers/net/wireless/wl12xx/wl1271_rx.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_rx.c b/drivers/net/wireless/wl12xx/wl1271_rx.c
deleted file mode 100644
index ca645f38109..00000000000
--- a/drivers/net/wireless/wl12xx/wl1271_rx.c
+++ /dev/null
@@ -1,224 +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 "wl1271.h"
-#include "wl1271_acx.h"
-#include "wl1271_reg.h"
-#include "wl1271_rx.h"
-#include "wl1271_spi.h"
-
-static u8 wl1271_rx_get_mem_block(struct wl1271_fw_status *status,
- u32 drv_rx_counter)
-{
- return le32_to_cpu(status->rx_pkt_descs[drv_rx_counter]) &
- RX_MEM_BLOCK_MASK;
-}
-
-static u32 wl1271_rx_get_buf_size(struct wl1271_fw_status *status,
- u32 drv_rx_counter)
-{
- return (le32_to_cpu(status->rx_pkt_descs[drv_rx_counter]) &
- RX_BUF_SIZE_MASK) >> RX_BUF_SIZE_SHIFT_DIV;
-}
-
-/* The values of this table must match the wl1271_rates[] array */
-static u8 wl1271_rx_rate_to_idx[] = {
- /* MCS rates are used only with 11n */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS7 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS6 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS5 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS4 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS3 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS2 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS1 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS0 */
-
- 11, /* WL1271_RATE_54 */
- 10, /* WL1271_RATE_48 */
- 9, /* WL1271_RATE_36 */
- 8, /* WL1271_RATE_24 */
-
- /* TI-specific rate */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_22 */
-
- 7, /* WL1271_RATE_18 */
- 6, /* WL1271_RATE_12 */
- 3, /* WL1271_RATE_11 */
- 5, /* WL1271_RATE_9 */
- 4, /* WL1271_RATE_6 */
- 2, /* WL1271_RATE_5_5 */
- 1, /* WL1271_RATE_2 */
- 0 /* WL1271_RATE_1 */
-};
-
-/* The values of this table must match the wl1271_rates[] array */
-static u8 wl1271_5_ghz_rx_rate_to_idx[] = {
- /* MCS rates are used only with 11n */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS7 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS6 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS5 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS4 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS3 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS2 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS1 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_MCS0 */
-
- 7, /* WL1271_RATE_54 */
- 6, /* WL1271_RATE_48 */
- 5, /* WL1271_RATE_36 */
- 4, /* WL1271_RATE_24 */
-
- /* TI-specific rate */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_22 */
-
- 3, /* WL1271_RATE_18 */
- 2, /* WL1271_RATE_12 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_11 */
- 1, /* WL1271_RATE_9 */
- 0, /* WL1271_RATE_6 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_5_5 */
- WL1271_RX_RATE_UNSUPPORTED, /* WL1271_RATE_2 */
- WL1271_RX_RATE_UNSUPPORTED /* WL1271_RATE_1 */
-};
-
-static void wl1271_rx_status(struct wl1271 *wl,
- struct wl1271_rx_descriptor *desc,
- struct ieee80211_rx_status *status,
- u8 beacon)
-{
- memset(status, 0, sizeof(struct ieee80211_rx_status));
-
- if ((desc->flags & WL1271_RX_DESC_BAND_MASK) ==
- WL1271_RX_DESC_BAND_BG) {
- status->band = IEEE80211_BAND_2GHZ;
- status->rate_idx = wl1271_rx_rate_to_idx[desc->rate];
- } else if ((desc->flags & WL1271_RX_DESC_BAND_MASK) ==
- WL1271_RX_DESC_BAND_A) {
- status->band = IEEE80211_BAND_5GHZ;
- status->rate_idx = wl1271_5_ghz_rx_rate_to_idx[desc->rate];
- } else
- wl1271_warning("unsupported band 0x%x",
- desc->flags & WL1271_RX_DESC_BAND_MASK);
-
- if (unlikely(status->rate_idx == WL1271_RX_RATE_UNSUPPORTED))
- wl1271_warning("unsupported rate");
-
- /*
- * FIXME: Add mactime handling. For IBSS (ad-hoc) we need to get the
- * timestamp from the beacon (acx_tsf_info). In BSS mode (infra) we
- * only need the mactime for monitor mode. For now the mactime is
- * not valid, so RX_FLAG_TSFT should not be set
- */
- status->signal = desc->rssi;
-
- /*
- * FIXME: In wl1251, the SNR should be divided by two. In wl1271 we
- * need to divide by two for now, but TI has been discussing about
- * changing it. This needs to be rechecked.
- */
- status->noise = desc->rssi - (desc->snr >> 1);
-
- status->freq = ieee80211_channel_to_frequency(desc->channel);
-
- if (desc->flags & WL1271_RX_DESC_ENCRYPT_MASK) {
- status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED;
-
- if (likely(!(desc->status & WL1271_RX_DESC_DECRYPT_FAIL)))
- status->flag |= RX_FLAG_DECRYPTED;
- if (unlikely(desc->status & WL1271_RX_DESC_MIC_FAIL))
- status->flag |= RX_FLAG_MMIC_ERROR;
- }
-}
-
-static void wl1271_rx_handle_data(struct wl1271 *wl, u32 length)
-{
- struct ieee80211_rx_status rx_status;
- struct wl1271_rx_descriptor *desc;
- struct sk_buff *skb;
- u16 *fc;
- u8 *buf;
- u8 beacon = 0;
-
- skb = __dev_alloc_skb(length, GFP_KERNEL);
- if (!skb) {
- wl1271_error("Couldn't allocate RX frame");
- return;
- }
-
- buf = skb_put(skb, length);
- wl1271_spi_read(wl, WL1271_SLV_MEM_DATA, buf, length, true);
-
- /* the data read starts with the descriptor */
- desc = (struct wl1271_rx_descriptor *) buf;
-
- /* now we pull the descriptor out of the buffer */
- skb_pull(skb, sizeof(*desc));
-
- fc = (u16 *)skb->data;
- if ((*fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON)
- beacon = 1;
-
- wl1271_rx_status(wl, desc, &rx_status, beacon);
-
- wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s", skb, skb->len,
- beacon ? "beacon" : "");
-
- memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
- ieee80211_rx_ni(wl->hw, skb);
-}
-
-void wl1271_rx(struct wl1271 *wl, struct wl1271_fw_status *status)
-{
- struct wl1271_acx_mem_map *wl_mem_map = wl->target_mem_map;
- u32 buf_size;
- u32 fw_rx_counter = status->fw_rx_counter & NUM_RX_PKT_DESC_MOD_MASK;
- u32 drv_rx_counter = wl->rx_counter & NUM_RX_PKT_DESC_MOD_MASK;
- u32 mem_block;
-
- while (drv_rx_counter != fw_rx_counter) {
- mem_block = wl1271_rx_get_mem_block(status, drv_rx_counter);
- buf_size = wl1271_rx_get_buf_size(status, drv_rx_counter);
-
- if (buf_size == 0) {
- wl1271_warning("received empty data");
- break;
- }
-
- wl->rx_mem_pool_addr.addr = (mem_block << 8) +
- le32_to_cpu(wl_mem_map->packet_memory_pool_start);
- wl->rx_mem_pool_addr.addr_extra =
- wl->rx_mem_pool_addr.addr + 4;
-
- /* Choose the block we want to read */
- wl1271_spi_write(wl, WL1271_SLV_REG_DATA,
- &wl->rx_mem_pool_addr,
- sizeof(wl->rx_mem_pool_addr), false);
-
- wl1271_rx_handle_data(wl, buf_size);
-
- wl->rx_counter++;
- drv_rx_counter = wl->rx_counter & NUM_RX_PKT_DESC_MOD_MASK;
- }
-
- wl1271_spi_write32(wl, RX_DRIVER_COUNTER_ADDRESS, wl->rx_counter);
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-15 03:11:59 +0000