[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / ti / wlcore / rx.c

/*
 * 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/gfp.h>
#include <linux/sched.h>

#include "wlcore.h"
#include "debug.h"
#include "acx.h"
#include "rx.h"
#include "tx.h"
#include "io.h"
#include "hw_ops.h"

/*
 * TODO: this is here just for now, it must be removed when the data
 * operations are in place.
 */
#include "../wl12xx/reg.h"

static u32 wlcore_rx_get_buf_size(struct wl1271 *wl,
				  u32 rx_pkt_desc)
{
	if (wl->quirks & WLCORE_QUIRK_RX_BLOCKSIZE_ALIGN)
		return (rx_pkt_desc & ALIGNED_RX_BUF_SIZE_MASK) >>
		       ALIGNED_RX_BUF_SIZE_SHIFT;

	return (rx_pkt_desc & RX_BUF_SIZE_MASK) >> RX_BUF_SIZE_SHIFT_DIV;
}

static u32 wlcore_rx_get_align_buf_size(struct wl1271 *wl, u32 pkt_len)
{
	if (wl->quirks & WLCORE_QUIRK_RX_BLOCKSIZE_ALIGN)
		return ALIGN(pkt_len, WL12XX_BUS_BLOCK_SIZE);

	return pkt_len;
}

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;
	else
		status->band = IEEE80211_BAND_5GHZ;

	status->rate_idx = wlcore_rate_to_idx(wl, desc->rate, status->band);

	/* 11n support */
	if (desc->rate <= wl->hw_min_ht_rate)
		status->flag |= RX_FLAG_HT;

	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.
	 */
	wl->noise = desc->rssi - (desc->snr >> 1);

	status->freq = ieee80211_channel_to_frequency(desc->channel,
						      status->band);

	if (desc->flags & WL1271_RX_DESC_ENCRYPT_MASK) {
		u8 desc_err_code = desc->status & WL1271_RX_DESC_STATUS_MASK;

		status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED |
				RX_FLAG_DECRYPTED;

		if (unlikely(desc_err_code == WL1271_RX_DESC_MIC_FAIL)) {
			status->flag |= RX_FLAG_MMIC_ERROR;
			wl1271_warning("Michael MIC error");
		}
	}
}

static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length,
				 enum wl_rx_buf_align rx_align, u8 *hlid)
{
	struct wl1271_rx_descriptor *desc;
	struct sk_buff *skb;
	struct ieee80211_hdr *hdr;
	u8 *buf;
	u8 beacon = 0;
	u8 is_data = 0;
	u8 reserved = 0;
	u16 seq_num;
	u32 pkt_data_len;

	/*
	 * In PLT mode we seem to get frames and mac80211 warns about them,
	 * workaround this by not retrieving them at all.
	 */
	if (unlikely(wl->plt))
		return -EINVAL;

	pkt_data_len = wlcore_hw_get_rx_packet_len(wl, data, length);
	if (!pkt_data_len) {
		wl1271_error("Invalid packet arrived from HW. length %d",
			     length);
		return -EINVAL;
	}

	if (rx_align == WLCORE_RX_BUF_UNALIGNED)
		reserved = RX_BUF_ALIGN;

	/* the data read starts with the descriptor */
	desc = (struct wl1271_rx_descriptor *) data;

	if (desc->packet_class == WL12XX_RX_CLASS_LOGGER) {
		size_t len = length - sizeof(*desc);
		wl12xx_copy_fwlog(wl, data + sizeof(*desc), len);
		wake_up_interruptible(&wl->fwlog_waitq);
		return 0;
	}

	switch (desc->status & WL1271_RX_DESC_STATUS_MASK) {
	/* discard corrupted packets */
	case WL1271_RX_DESC_DRIVER_RX_Q_FAIL:
	case WL1271_RX_DESC_DECRYPT_FAIL:
		wl1271_warning("corrupted packet in RX with status: 0x%x",
			       desc->status & WL1271_RX_DESC_STATUS_MASK);
		return -EINVAL;
	case WL1271_RX_DESC_SUCCESS:
	case WL1271_RX_DESC_MIC_FAIL:
		break;
	default:
		wl1271_error("invalid RX descriptor status: 0x%x",
			     desc->status & WL1271_RX_DESC_STATUS_MASK);
		return -EINVAL;
	}

	/* skb length not including rx descriptor */
	skb = __dev_alloc_skb(pkt_data_len + reserved, GFP_KERNEL);
	if (!skb) {
		wl1271_error("Couldn't allocate RX frame");
		return -ENOMEM;
	}

	/* reserve the unaligned payload(if any) */
	skb_reserve(skb, reserved);

	buf = skb_put(skb, pkt_data_len);

	/*
	 * Copy packets from aggregation buffer to the skbs without rx
	 * descriptor and with packet payload aligned care. In case of unaligned
	 * packets copy the packets in offset of 2 bytes guarantee IP header
	 * payload aligned to 4 bytes.
	 */
	memcpy(buf, data + sizeof(*desc), pkt_data_len);
	if (rx_align == WLCORE_RX_BUF_PADDED)
		skb_pull(skb, RX_BUF_ALIGN);

	*hlid = desc->hlid;

	hdr = (struct ieee80211_hdr *)skb->data;
	if (ieee80211_is_beacon(hdr->frame_control))
		beacon = 1;
	if (ieee80211_is_data_present(hdr->frame_control))
		is_data = 1;

	wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon);
	wlcore_hw_set_rx_csum(wl, desc, skb);

	seq_num = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
	wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s seq %d hlid %d", skb,
		     skb->len - desc->pad_len,
		     beacon ? "beacon" : "",
		     seq_num, *hlid);

	skb_queue_tail(&wl->deferred_rx_queue, skb);
	queue_work(wl->freezable_wq, &wl->netstack_work);

	return is_data;
}

int wlcore_rx(struct wl1271 *wl, struct wl_fw_status_1 *status)
{
	unsigned long active_hlids[BITS_TO_LONGS(WL12XX_MAX_LINKS)] = {0};
	u32 buf_size;
	u32 fw_rx_counter = status->fw_rx_counter % wl->num_rx_desc;
	u32 drv_rx_counter = wl->rx_counter % wl->num_rx_desc;
	u32 rx_counter;
	u32 pkt_len, align_pkt_len;
	u32 pkt_offset, des;
	u8 hlid;
	enum wl_rx_buf_align rx_align;
	int ret = 0;

	while (drv_rx_counter != fw_rx_counter) {
		buf_size = 0;
		rx_counter = drv_rx_counter;
		while (rx_counter != fw_rx_counter) {
			des = le32_to_cpu(status->rx_pkt_descs[rx_counter]);
			pkt_len = wlcore_rx_get_buf_size(wl, des);
			align_pkt_len = wlcore_rx_get_align_buf_size(wl,
								     pkt_len);
			if (buf_size + align_pkt_len > WL1271_AGGR_BUFFER_SIZE)
				break;
			buf_size += align_pkt_len;
			rx_counter++;
			rx_counter %= wl->num_rx_desc;
		}

		if (buf_size == 0) {
			wl1271_warning("received empty data");
			break;
		}

		/* Read all available packets at once */
		des = le32_to_cpu(status->rx_pkt_descs[drv_rx_counter]);
		wlcore_hw_prepare_read(wl, des, buf_size);

		ret = wlcore_read_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf,
				       buf_size, true);
		if (ret < 0)
			goto out;

		/* Split data into separate packets */
		pkt_offset = 0;
		while (pkt_offset < buf_size) {
			des = le32_to_cpu(status->rx_pkt_descs[drv_rx_counter]);
			pkt_len = wlcore_rx_get_buf_size(wl, des);
			rx_align = wlcore_hw_get_rx_buf_align(wl, des);

			/*
			 * the handle data call can only fail in memory-outage
			 * conditions, in that case the received frame will just
			 * be dropped.
			 */
			if (wl1271_rx_handle_data(wl,
						  wl->aggr_buf + pkt_offset,
						  pkt_len, rx_align,
						  &hlid) == 1) {
				if (hlid < WL12XX_MAX_LINKS)
					__set_bit(hlid, active_hlids);
				else
					WARN(1,
					     "hlid exceeded WL12XX_MAX_LINKS "
					     "(%d)\n", hlid);
			}

			wl->rx_counter++;
			drv_rx_counter++;
			drv_rx_counter %= wl->num_rx_desc;
			pkt_offset += wlcore_rx_get_align_buf_size(wl, pkt_len);
		}
	}

	/*
	 * Write the driver's packet counter to the FW. This is only required
	 * for older hardware revisions
	 */
	if (wl->quirks & WLCORE_QUIRK_END_OF_TRANSACTION)
		wl1271_write32(wl, WL12XX_REG_RX_DRIVER_COUNTER,
			       wl->rx_counter);

	wl12xx_rearm_rx_streaming(wl, active_hlids);

out:
	return ret;
}

#ifdef CONFIG_PM
int wl1271_rx_filter_enable(struct wl1271 *wl,
			    int index, bool enable,
			    struct wl12xx_rx_filter *filter)
{
	int ret;

	if (wl->rx_filter_enabled[index] == enable) {
		wl1271_warning("Request to enable an already "
			     "enabled rx filter %d", index);
		return 0;
	}

	ret = wl1271_acx_set_rx_filter(wl, index, enable, filter);

	if (ret) {
		wl1271_error("Failed to %s rx data filter %d (err=%d)",
			     enable ? "enable" : "disable", index, ret);
		return ret;
	}

	wl->rx_filter_enabled[index] = enable;

	return 0;
}

void wl1271_rx_filter_clear_all(struct wl1271 *wl)
{
	int i;

	for (i = 0; i < WL1271_MAX_RX_FILTERS; i++) {
		if (!wl->rx_filter_enabled[i])
			continue;
		wl1271_rx_filter_enable(wl, i, 0, NULL);
	}
}
#endif /* CONFIG_PM */
Commit	Line	Data
f5fc0f86 LC	1	/*
	2	* This file is part of wl1271
	3	*
	4	* Copyright (C) 2009 Nokia Corporation
	5	*
	6	* Contact: Luciano Coelho <luciano.coelho@nokia.com>
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* version 2 as published by the Free Software Foundation.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	20	* 02110-1301 USA
	21	*
	22	*/
	23
5a0e3ad6	24	#include <linux/gfp.h>
95dac04f	25	#include <linux/sched.h>
5a0e3ad6	26
c31be25a	27	#include "wlcore.h"
0f4e3122	28	#include "debug.h"
00d20100	29	#include "acx.h"
00d20100	30	#include "rx.h"
9eb599e9	31	#include "tx.h"
00d20100	32	#include "io.h"
cd70f6a4	33	#include "hw_ops.h"
f5fc0f86	34
00782136 LC	35	/*
	36	* TODO: this is here just for now, it must be removed when the data
	37	* operations are in place.
	38	*/
	39	#include "../wl12xx/reg.h"
	40
5766435e AN	41	static u32 wlcore_rx_get_buf_size(struct wl1271 *wl,
5766435e AN	42	u32 rx_pkt_desc)
f5fc0f86	43	{
5766435e AN	44	if (wl->quirks & WLCORE_QUIRK_RX_BLOCKSIZE_ALIGN)
	45	return (rx_pkt_desc & ALIGNED_RX_BUF_SIZE_MASK) >>
	46	ALIGNED_RX_BUF_SIZE_SHIFT;
	47
	48	return (rx_pkt_desc & RX_BUF_SIZE_MASK) >> RX_BUF_SIZE_SHIFT_DIV;
	49	}
	50
	51	static u32 wlcore_rx_get_align_buf_size(struct wl1271 *wl, u32 pkt_len)
	52	{
	53	if (wl->quirks & WLCORE_QUIRK_RX_BLOCKSIZE_ALIGN)
	54	return ALIGN(pkt_len, WL12XX_BUS_BLOCK_SIZE);
	55
	56	return pkt_len;
f5fc0f86 LC	57	}
f5fc0f86 LC	58
f5fc0f86 LC	59	static void wl1271_rx_status(struct wl1271 *wl,
	60	struct wl1271_rx_descriptor *desc,
	61	struct ieee80211_rx_status *status,
	62	u8 beacon)
	63	{
	64	memset(status, 0, sizeof(struct ieee80211_rx_status));
	65
6a2de93b	66	if ((desc->flags & WL1271_RX_DESC_BAND_MASK) == WL1271_RX_DESC_BAND_BG)
0af0467f	67	status->band = IEEE80211_BAND_2GHZ;
6a2de93b	68	else
0af0467f	69	status->band = IEEE80211_BAND_5GHZ;
6a2de93b	70
43a8bc5a	71	status->rate_idx = wlcore_rate_to_idx(wl, desc->rate, status->band);
a4102645	72
18357850	73	/* 11n support */
43a8bc5a	74	if (desc->rate <= wl->hw_min_ht_rate)
18357850	75	status->flag \|= RX_FLAG_HT;
18357850	76
f5fc0f86 LC	77	status->signal = desc->rssi;
f5fc0f86 LC	78
ece550d0 JL	79	/*
	80	* FIXME: In wl1251, the SNR should be divided by two. In wl1271 we
	81	* need to divide by two for now, but TI has been discussing about
	82	* changing it. This needs to be rechecked.
	83	*/
	84	wl->noise = desc->rssi - (desc->snr >> 1);
	85
0af0467f JO	86	status->freq = ieee80211_channel_to_frequency(desc->channel,
0af0467f JO	87	status->band);
f5fc0f86 LC	88
f5fc0f86 LC	89	if (desc->flags & WL1271_RX_DESC_ENCRYPT_MASK) {
34c8e3d2	90	u8 desc_err_code = desc->status & WL1271_RX_DESC_STATUS_MASK;
f5fc0f86	91
34c8e3d2 AN	92	status->flag \|= RX_FLAG_IV_STRIPPED \| RX_FLAG_MMIC_STRIPPED \|
	93	RX_FLAG_DECRYPTED;
	94
	95	if (unlikely(desc_err_code == WL1271_RX_DESC_MIC_FAIL)) {
5d07b668	96	status->flag \|= RX_FLAG_MMIC_ERROR;
34c8e3d2 AN	97	wl1271_warning("Michael MIC error");
34c8e3d2 AN	98	}
f5fc0f86	99	}
f5fc0f86 LC	100	}
f5fc0f86 LC	101
0a1d3abc	102	static int wl1271_rx_handle_data(struct wl1271 wl, u8 data, u32 length,
cd70f6a4	103	enum wl_rx_buf_align rx_align, u8 *hlid)
f5fc0f86	104	{
f5fc0f86 LC	105	struct wl1271_rx_descriptor *desc;
f5fc0f86 LC	106	struct sk_buff *skb;
92fe9b5f	107	struct ieee80211_hdr *hdr;
f5fc0f86 LC	108	u8 *buf;
f5fc0f86 LC	109	u8 beacon = 0;
77ddaa10	110	u8 is_data = 0;
cd70f6a4	111	u8 reserved = 0;
5c472148	112	u16 seq_num;
4158149c	113	u32 pkt_data_len;
f5fc0f86	114
93c5bb68 KV	115	/*
	116	* In PLT mode we seem to get frames and mac80211 warns about them,
	117	* workaround this by not retrieving them at all.
	118	*/
3fcdab70	119	if (unlikely(wl->plt))
1f37cbc9	120	return -EINVAL;
93c5bb68	121
4158149c AN	122	pkt_data_len = wlcore_hw_get_rx_packet_len(wl, data, length);
	123	if (!pkt_data_len) {
	124	wl1271_error("Invalid packet arrived from HW. length %d",
	125	length);
	126	return -EINVAL;
	127	}
	128
cd70f6a4	129	if (rx_align == WLCORE_RX_BUF_UNALIGNED)
04414e2a	130	reserved = RX_BUF_ALIGN;
cd70f6a4	131
34c8e3d2 AN	132	/* the data read starts with the descriptor */
	133	desc = (struct wl1271_rx_descriptor *) data;
	134
95dac04f IY	135	if (desc->packet_class == WL12XX_RX_CLASS_LOGGER) {
	136	size_t len = length - sizeof(*desc);
	137	wl12xx_copy_fwlog(wl, data + sizeof(*desc), len);
	138	wake_up_interruptible(&wl->fwlog_waitq);
	139	return 0;
	140	}
	141
34c8e3d2 AN	142	switch (desc->status & WL1271_RX_DESC_STATUS_MASK) {
	143	/* discard corrupted packets */
	144	case WL1271_RX_DESC_DRIVER_RX_Q_FAIL:
	145	case WL1271_RX_DESC_DECRYPT_FAIL:
	146	wl1271_warning("corrupted packet in RX with status: 0x%x",
	147	desc->status & WL1271_RX_DESC_STATUS_MASK);
	148	return -EINVAL;
	149	case WL1271_RX_DESC_SUCCESS:
	150	case WL1271_RX_DESC_MIC_FAIL:
	151	break;
	152	default:
	153	wl1271_error("invalid RX descriptor status: 0x%x",
	154	desc->status & WL1271_RX_DESC_STATUS_MASK);
	155	return -EINVAL;
	156	}
	157
4158149c AN	158	/* skb length not including rx descriptor */
4158149c AN	159	skb = __dev_alloc_skb(pkt_data_len + reserved, GFP_KERNEL);
f5fc0f86 LC	160	if (!skb) {
f5fc0f86 LC	161	wl1271_error("Couldn't allocate RX frame");
1f37cbc9	162	return -ENOMEM;
f5fc0f86 LC	163	}
f5fc0f86 LC	164
0a1d3abc SL	165	/* reserve the unaligned payload(if any) */
	166	skb_reserve(skb, reserved);
	167
4158149c	168	buf = skb_put(skb, pkt_data_len);
f5fc0f86	169
0a1d3abc SL	170	/*
	171	* Copy packets from aggregation buffer to the skbs without rx
	172	* descriptor and with packet payload aligned care. In case of unaligned
	173	* packets copy the packets in offset of 2 bytes guarantee IP header
	174	* payload aligned to 4 bytes.
	175	*/
4158149c	176	memcpy(buf, data + sizeof(*desc), pkt_data_len);
cd70f6a4	177	if (rx_align == WLCORE_RX_BUF_PADDED)
04414e2a	178	skb_pull(skb, RX_BUF_ALIGN);
cd70f6a4	179
9eb599e9	180	*hlid = desc->hlid;
f5fc0f86	181
92fe9b5f EP	182	hdr = (struct ieee80211_hdr *)skb->data;
92fe9b5f EP	183	if (ieee80211_is_beacon(hdr->frame_control))
f5fc0f86	184	beacon = 1;
77ddaa10 EP	185	if (ieee80211_is_data_present(hdr->frame_control))
77ddaa10 EP	186	is_data = 1;
f5fc0f86	187
58be4607	188	wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon);
169da04f	189	wlcore_hw_set_rx_csum(wl, desc, skb);
f5fc0f86	190
5c472148	191	seq_num = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
9eb599e9	192	wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s seq %d hlid %d", skb,
a20a5b7e	193	skb->len - desc->pad_len,
5c472148	194	beacon ? "beacon" : "",
9eb599e9	195	seq_num, *hlid);
f5fc0f86	196
a620865e	197	skb_queue_tail(&wl->deferred_rx_queue, skb);
92ef8960	198	queue_work(wl->freezable_wq, &wl->netstack_work);
1f37cbc9	199
77ddaa10	200	return is_data;
f5fc0f86 LC	201	}
f5fc0f86 LC	202
045b9b5f	203	int wlcore_rx(struct wl1271 wl, struct wl_fw_status_1 status)
f5fc0f86	204	{
9eb599e9	205	unsigned long active_hlids[BITS_TO_LONGS(WL12XX_MAX_LINKS)] = {0};
f5fc0f86	206	u32 buf_size;
0afd04e5 AN	207	u32 fw_rx_counter = status->fw_rx_counter % wl->num_rx_desc;
0afd04e5 AN	208	u32 drv_rx_counter = wl->rx_counter % wl->num_rx_desc;
1f37cbc9	209	u32 rx_counter;
5766435e AN	210	u32 pkt_len, align_pkt_len;
5766435e AN	211	u32 pkt_offset, des;
9eb599e9	212	u8 hlid;
cd70f6a4	213	enum wl_rx_buf_align rx_align;
045b9b5f	214	int ret = 0;
f5fc0f86 LC	215
f5fc0f86 LC	216	while (drv_rx_counter != fw_rx_counter) {
1f37cbc9 IY	217	buf_size = 0;
	218	rx_counter = drv_rx_counter;
	219	while (rx_counter != fw_rx_counter) {
5766435e AN	220	des = le32_to_cpu(status->rx_pkt_descs[rx_counter]);
	221	pkt_len = wlcore_rx_get_buf_size(wl, des);
	222	align_pkt_len = wlcore_rx_get_align_buf_size(wl,
	223	pkt_len);
	224	if (buf_size + align_pkt_len > WL1271_AGGR_BUFFER_SIZE)
1f37cbc9	225	break;
5766435e	226	buf_size += align_pkt_len;
1f37cbc9	227	rx_counter++;
0afd04e5	228	rx_counter %= wl->num_rx_desc;
1f37cbc9	229	}
f5fc0f86 LC	230
	231	if (buf_size == 0) {
	232	wl1271_warning("received empty data");
	233	break;
	234	}
	235
1f37cbc9	236	/* Read all available packets at once */
b14684a0 LC	237	des = le32_to_cpu(status->rx_pkt_descs[drv_rx_counter]);
b14684a0 LC	238	wlcore_hw_prepare_read(wl, des, buf_size);
045b9b5f IY	239
	240	ret = wlcore_read_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf,
	241	buf_size, true);
	242	if (ret < 0)
	243	goto out;
1f37cbc9 IY	244
	245	/* Split data into separate packets */
	246	pkt_offset = 0;
	247	while (pkt_offset < buf_size) {
5766435e AN	248	des = le32_to_cpu(status->rx_pkt_descs[drv_rx_counter]);
5766435e AN	249	pkt_len = wlcore_rx_get_buf_size(wl, des);
cd70f6a4	250	rx_align = wlcore_hw_get_rx_buf_align(wl, des);
0a1d3abc	251
fb2382c7 JO	252	/*
	253	* the handle data call can only fail in memory-outage
	254	* conditions, in that case the received frame will just
	255	* be dropped.
	256	*/
77ddaa10 EP	257	if (wl1271_rx_handle_data(wl,
77ddaa10 EP	258	wl->aggr_buf + pkt_offset,
cd70f6a4	259	pkt_len, rx_align,
9eb599e9	260	&hlid) == 1) {
f414218e LC	261	if (hlid < WL12XX_MAX_LINKS)
	262	__set_bit(hlid, active_hlids);
	263	else
	264	WARN(1,
	265	"hlid exceeded WL12XX_MAX_LINKS "
	266	"(%d)\n", hlid);
9eb599e9	267	}
77ddaa10	268
1f37cbc9 IY	269	wl->rx_counter++;
1f37cbc9 IY	270	drv_rx_counter++;
0afd04e5	271	drv_rx_counter %= wl->num_rx_desc;
5766435e	272	pkt_offset += wlcore_rx_get_align_buf_size(wl, pkt_len);
1f37cbc9	273	}
f5fc0f86	274	}
606ea9fa IY	275
	276	/*
	277	* Write the driver's packet counter to the FW. This is only required
	278	* for older hardware revisions
	279	*/
6f7dd16c	280	if (wl->quirks & WLCORE_QUIRK_END_OF_TRANSACTION)
00782136 LC	281	wl1271_write32(wl, WL12XX_REG_RX_DRIVER_COUNTER,
00782136 LC	282	wl->rx_counter);
77ddaa10	283
9eb599e9	284	wl12xx_rearm_rx_streaming(wl, active_hlids);
045b9b5f IY	285
	286	out:
	287	return ret;
f5fc0f86	288	}
dbe0a8cd	289
4161923a	290	#ifdef CONFIG_PM
dbe0a8cd ES	291	int wl1271_rx_filter_enable(struct wl1271 *wl,
	292	int index, bool enable,
	293	struct wl12xx_rx_filter *filter)
	294	{
	295	int ret;
	296
	297	if (wl->rx_filter_enabled[index] == enable) {
	298	wl1271_warning("Request to enable an already "
	299	"enabled rx filter %d", index);
	300	return 0;
	301	}
	302
	303	ret = wl1271_acx_set_rx_filter(wl, index, enable, filter);
	304
	305	if (ret) {
	306	wl1271_error("Failed to %s rx data filter %d (err=%d)",
	307	enable ? "enable" : "disable", index, ret);
	308	return ret;
	309	}
	310
	311	wl->rx_filter_enabled[index] = enable;
	312
	313	return 0;
	314	}
	315
	316	void wl1271_rx_filter_clear_all(struct wl1271 *wl)
	317	{
	318	int i;
	319
	320	for (i = 0; i < WL1271_MAX_RX_FILTERS; i++) {
	321	if (!wl->rx_filter_enabled[i])
	322	continue;
	323	wl1271_rx_filter_enable(wl, i, 0, NULL);
	324	}
	325	}
4161923a	326	#endif /* CONFIG_PM */