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path: root/drivers/net/wireless/cw1200/wsm.c
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Diffstat (limited to 'drivers/net/wireless/cw1200/wsm.c')
-rw-r--r--drivers/net/wireless/cw1200/wsm.c1822
1 files changed, 0 insertions, 1822 deletions
diff --git a/drivers/net/wireless/cw1200/wsm.c b/drivers/net/wireless/cw1200/wsm.c
deleted file mode 100644
index 9e0ca3048..000000000
--- a/drivers/net/wireless/cw1200/wsm.c
+++ /dev/null
@@ -1,1822 +0,0 @@
-/*
- * WSM host interface (HI) implementation for
- * ST-Ericsson CW1200 mac80211 drivers.
- *
- * Copyright (c) 2010, ST-Ericsson
- * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
- *
- * 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.
- */
-
-#include <linux/skbuff.h>
-#include <linux/wait.h>
-#include <linux/delay.h>
-#include <linux/sched.h>
-#include <linux/random.h>
-
-#include "cw1200.h"
-#include "wsm.h"
-#include "bh.h"
-#include "sta.h"
-#include "debug.h"
-
-#define WSM_CMD_TIMEOUT (2 * HZ) /* With respect to interrupt loss */
-#define WSM_CMD_START_TIMEOUT (7 * HZ)
-#define WSM_CMD_RESET_TIMEOUT (3 * HZ) /* 2 sec. timeout was observed. */
-#define WSM_CMD_MAX_TIMEOUT (3 * HZ)
-
-#define WSM_SKIP(buf, size) \
- do { \
- if ((buf)->data + size > (buf)->end) \
- goto underflow; \
- (buf)->data += size; \
- } while (0)
-
-#define WSM_GET(buf, ptr, size) \
- do { \
- if ((buf)->data + size > (buf)->end) \
- goto underflow; \
- memcpy(ptr, (buf)->data, size); \
- (buf)->data += size; \
- } while (0)
-
-#define __WSM_GET(buf, type, type2, cvt) \
- ({ \
- type val; \
- if ((buf)->data + sizeof(type) > (buf)->end) \
- goto underflow; \
- val = cvt(*(type2 *)(buf)->data); \
- (buf)->data += sizeof(type); \
- val; \
- })
-
-#define WSM_GET8(buf) __WSM_GET(buf, u8, u8, (u8))
-#define WSM_GET16(buf) __WSM_GET(buf, u16, __le16, __le16_to_cpu)
-#define WSM_GET32(buf) __WSM_GET(buf, u32, __le32, __le32_to_cpu)
-
-#define WSM_PUT(buf, ptr, size) \
- do { \
- if ((buf)->data + size > (buf)->end) \
- if (wsm_buf_reserve((buf), size)) \
- goto nomem; \
- memcpy((buf)->data, ptr, size); \
- (buf)->data += size; \
- } while (0)
-
-#define __WSM_PUT(buf, val, type, type2, cvt) \
- do { \
- if ((buf)->data + sizeof(type) > (buf)->end) \
- if (wsm_buf_reserve((buf), sizeof(type))) \
- goto nomem; \
- *(type2 *)(buf)->data = cvt(val); \
- (buf)->data += sizeof(type); \
- } while (0)
-
-#define WSM_PUT8(buf, val) __WSM_PUT(buf, val, u8, u8, (u8))
-#define WSM_PUT16(buf, val) __WSM_PUT(buf, val, u16, __le16, __cpu_to_le16)
-#define WSM_PUT32(buf, val) __WSM_PUT(buf, val, u32, __le32, __cpu_to_le32)
-
-static void wsm_buf_reset(struct wsm_buf *buf);
-static int wsm_buf_reserve(struct wsm_buf *buf, size_t extra_size);
-
-static int wsm_cmd_send(struct cw1200_common *priv,
- struct wsm_buf *buf,
- void *arg, u16 cmd, long tmo);
-
-#define wsm_cmd_lock(__priv) mutex_lock(&((__priv)->wsm_cmd_mux))
-#define wsm_cmd_unlock(__priv) mutex_unlock(&((__priv)->wsm_cmd_mux))
-
-/* ******************************************************************** */
-/* WSM API implementation */
-
-static int wsm_generic_confirm(struct cw1200_common *priv,
- void *arg,
- struct wsm_buf *buf)
-{
- u32 status = WSM_GET32(buf);
- if (status != WSM_STATUS_SUCCESS)
- return -EINVAL;
- return 0;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-int wsm_configuration(struct cw1200_common *priv, struct wsm_configuration *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT32(buf, arg->dot11MaxTransmitMsduLifeTime);
- WSM_PUT32(buf, arg->dot11MaxReceiveLifeTime);
- WSM_PUT32(buf, arg->dot11RtsThreshold);
-
- /* DPD block. */
- WSM_PUT16(buf, arg->dpdData_size + 12);
- WSM_PUT16(buf, 1); /* DPD version */
- WSM_PUT(buf, arg->dot11StationId, ETH_ALEN);
- WSM_PUT16(buf, 5); /* DPD flags */
- WSM_PUT(buf, arg->dpdData, arg->dpdData_size);
-
- ret = wsm_cmd_send(priv, buf, arg,
- WSM_CONFIGURATION_REQ_ID, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-static int wsm_configuration_confirm(struct cw1200_common *priv,
- struct wsm_configuration *arg,
- struct wsm_buf *buf)
-{
- int i;
- int status;
-
- status = WSM_GET32(buf);
- if (WARN_ON(status != WSM_STATUS_SUCCESS))
- return -EINVAL;
-
- WSM_GET(buf, arg->dot11StationId, ETH_ALEN);
- arg->dot11FrequencyBandsSupported = WSM_GET8(buf);
- WSM_SKIP(buf, 1);
- arg->supportedRateMask = WSM_GET32(buf);
- for (i = 0; i < 2; ++i) {
- arg->txPowerRange[i].min_power_level = WSM_GET32(buf);
- arg->txPowerRange[i].max_power_level = WSM_GET32(buf);
- arg->txPowerRange[i].stepping = WSM_GET32(buf);
- }
- return 0;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-/* ******************************************************************** */
-
-int wsm_reset(struct cw1200_common *priv, const struct wsm_reset *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- u16 cmd = WSM_RESET_REQ_ID | WSM_TX_LINK_ID(arg->link_id);
-
- wsm_cmd_lock(priv);
-
- WSM_PUT32(buf, arg->reset_statistics ? 0 : 1);
- ret = wsm_cmd_send(priv, buf, NULL, cmd, WSM_CMD_RESET_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-struct wsm_mib {
- u16 mib_id;
- void *buf;
- size_t buf_size;
-};
-
-int wsm_read_mib(struct cw1200_common *priv, u16 mib_id, void *_buf,
- size_t buf_size)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- struct wsm_mib mib_buf = {
- .mib_id = mib_id,
- .buf = _buf,
- .buf_size = buf_size,
- };
- wsm_cmd_lock(priv);
-
- WSM_PUT16(buf, mib_id);
- WSM_PUT16(buf, 0);
-
- ret = wsm_cmd_send(priv, buf, &mib_buf,
- WSM_READ_MIB_REQ_ID, WSM_CMD_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-static int wsm_read_mib_confirm(struct cw1200_common *priv,
- struct wsm_mib *arg,
- struct wsm_buf *buf)
-{
- u16 size;
- if (WARN_ON(WSM_GET32(buf) != WSM_STATUS_SUCCESS))
- return -EINVAL;
-
- if (WARN_ON(WSM_GET16(buf) != arg->mib_id))
- return -EINVAL;
-
- size = WSM_GET16(buf);
- if (size > arg->buf_size)
- size = arg->buf_size;
-
- WSM_GET(buf, arg->buf, size);
- arg->buf_size = size;
- return 0;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-/* ******************************************************************** */
-
-int wsm_write_mib(struct cw1200_common *priv, u16 mib_id, void *_buf,
- size_t buf_size)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- struct wsm_mib mib_buf = {
- .mib_id = mib_id,
- .buf = _buf,
- .buf_size = buf_size,
- };
-
- wsm_cmd_lock(priv);
-
- WSM_PUT16(buf, mib_id);
- WSM_PUT16(buf, buf_size);
- WSM_PUT(buf, _buf, buf_size);
-
- ret = wsm_cmd_send(priv, buf, &mib_buf,
- WSM_WRITE_MIB_REQ_ID, WSM_CMD_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-static int wsm_write_mib_confirm(struct cw1200_common *priv,
- struct wsm_mib *arg,
- struct wsm_buf *buf)
-{
- int ret;
-
- ret = wsm_generic_confirm(priv, arg, buf);
- if (ret)
- return ret;
-
- if (arg->mib_id == WSM_MIB_ID_OPERATIONAL_POWER_MODE) {
- /* OperationalMode: update PM status. */
- const char *p = arg->buf;
- cw1200_enable_powersave(priv, (p[0] & 0x0F) ? true : false);
- }
- return 0;
-}
-
-/* ******************************************************************** */
-
-int wsm_scan(struct cw1200_common *priv, const struct wsm_scan *arg)
-{
- int i;
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- if (arg->num_channels > 48)
- return -EINVAL;
-
- if (arg->num_ssids > 2)
- return -EINVAL;
-
- if (arg->band > 1)
- return -EINVAL;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, arg->band);
- WSM_PUT8(buf, arg->type);
- WSM_PUT8(buf, arg->flags);
- WSM_PUT8(buf, arg->max_tx_rate);
- WSM_PUT32(buf, arg->auto_scan_interval);
- WSM_PUT8(buf, arg->num_probes);
- WSM_PUT8(buf, arg->num_channels);
- WSM_PUT8(buf, arg->num_ssids);
- WSM_PUT8(buf, arg->probe_delay);
-
- for (i = 0; i < arg->num_channels; ++i) {
- WSM_PUT16(buf, arg->ch[i].number);
- WSM_PUT16(buf, 0);
- WSM_PUT32(buf, arg->ch[i].min_chan_time);
- WSM_PUT32(buf, arg->ch[i].max_chan_time);
- WSM_PUT32(buf, 0);
- }
-
- for (i = 0; i < arg->num_ssids; ++i) {
- WSM_PUT32(buf, arg->ssids[i].length);
- WSM_PUT(buf, &arg->ssids[i].ssid[0],
- sizeof(arg->ssids[i].ssid));
- }
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_START_SCAN_REQ_ID, WSM_CMD_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_stop_scan(struct cw1200_common *priv)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- wsm_cmd_lock(priv);
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_STOP_SCAN_REQ_ID, WSM_CMD_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-}
-
-
-static int wsm_tx_confirm(struct cw1200_common *priv,
- struct wsm_buf *buf,
- int link_id)
-{
- struct wsm_tx_confirm tx_confirm;
-
- tx_confirm.packet_id = WSM_GET32(buf);
- tx_confirm.status = WSM_GET32(buf);
- tx_confirm.tx_rate = WSM_GET8(buf);
- tx_confirm.ack_failures = WSM_GET8(buf);
- tx_confirm.flags = WSM_GET16(buf);
- tx_confirm.media_delay = WSM_GET32(buf);
- tx_confirm.tx_queue_delay = WSM_GET32(buf);
-
- cw1200_tx_confirm_cb(priv, link_id, &tx_confirm);
- return 0;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-static int wsm_multi_tx_confirm(struct cw1200_common *priv,
- struct wsm_buf *buf, int link_id)
-{
- int ret;
- int count;
- int i;
-
- count = WSM_GET32(buf);
- if (WARN_ON(count <= 0))
- return -EINVAL;
-
- if (count > 1) {
- /* We already released one buffer, now for the rest */
- ret = wsm_release_tx_buffer(priv, count - 1);
- if (ret < 0)
- return ret;
- else if (ret > 0)
- cw1200_bh_wakeup(priv);
- }
-
- cw1200_debug_txed_multi(priv, count);
- for (i = 0; i < count; ++i) {
- ret = wsm_tx_confirm(priv, buf, link_id);
- if (ret)
- return ret;
- }
- return ret;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-/* ******************************************************************** */
-
-static int wsm_join_confirm(struct cw1200_common *priv,
- struct wsm_join_cnf *arg,
- struct wsm_buf *buf)
-{
- arg->status = WSM_GET32(buf);
- if (WARN_ON(arg->status) != WSM_STATUS_SUCCESS)
- return -EINVAL;
-
- arg->min_power_level = WSM_GET32(buf);
- arg->max_power_level = WSM_GET32(buf);
-
- return 0;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-int wsm_join(struct cw1200_common *priv, struct wsm_join *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- struct wsm_join_cnf resp;
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, arg->mode);
- WSM_PUT8(buf, arg->band);
- WSM_PUT16(buf, arg->channel_number);
- WSM_PUT(buf, &arg->bssid[0], sizeof(arg->bssid));
- WSM_PUT16(buf, arg->atim_window);
- WSM_PUT8(buf, arg->preamble_type);
- WSM_PUT8(buf, arg->probe_for_join);
- WSM_PUT8(buf, arg->dtim_period);
- WSM_PUT8(buf, arg->flags);
- WSM_PUT32(buf, arg->ssid_len);
- WSM_PUT(buf, &arg->ssid[0], sizeof(arg->ssid));
- WSM_PUT32(buf, arg->beacon_interval);
- WSM_PUT32(buf, arg->basic_rate_set);
-
- priv->tx_burst_idx = -1;
- ret = wsm_cmd_send(priv, buf, &resp,
- WSM_JOIN_REQ_ID, WSM_CMD_TIMEOUT);
- /* TODO: Update state based on resp.min|max_power_level */
-
- priv->join_complete_status = resp.status;
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_set_bss_params(struct cw1200_common *priv,
- const struct wsm_set_bss_params *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, (arg->reset_beacon_loss ? 0x1 : 0));
- WSM_PUT8(buf, arg->beacon_lost_count);
- WSM_PUT16(buf, arg->aid);
- WSM_PUT32(buf, arg->operational_rate_set);
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_SET_BSS_PARAMS_REQ_ID, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_add_key(struct cw1200_common *priv, const struct wsm_add_key *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT(buf, arg, sizeof(*arg));
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_ADD_KEY_REQ_ID, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_remove_key(struct cw1200_common *priv, const struct wsm_remove_key *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, arg->index);
- WSM_PUT8(buf, 0);
- WSM_PUT16(buf, 0);
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_REMOVE_KEY_REQ_ID, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_set_tx_queue_params(struct cw1200_common *priv,
- const struct wsm_set_tx_queue_params *arg, u8 id)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- u8 queue_id_to_wmm_aci[] = {3, 2, 0, 1};
-
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, queue_id_to_wmm_aci[id]);
- WSM_PUT8(buf, 0);
- WSM_PUT8(buf, arg->ackPolicy);
- WSM_PUT8(buf, 0);
- WSM_PUT32(buf, arg->maxTransmitLifetime);
- WSM_PUT16(buf, arg->allowedMediumTime);
- WSM_PUT16(buf, 0);
-
- ret = wsm_cmd_send(priv, buf, NULL, 0x0012, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_set_edca_params(struct cw1200_common *priv,
- const struct wsm_edca_params *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- /* Implemented according to specification. */
-
- WSM_PUT16(buf, arg->params[3].cwmin);
- WSM_PUT16(buf, arg->params[2].cwmin);
- WSM_PUT16(buf, arg->params[1].cwmin);
- WSM_PUT16(buf, arg->params[0].cwmin);
-
- WSM_PUT16(buf, arg->params[3].cwmax);
- WSM_PUT16(buf, arg->params[2].cwmax);
- WSM_PUT16(buf, arg->params[1].cwmax);
- WSM_PUT16(buf, arg->params[0].cwmax);
-
- WSM_PUT8(buf, arg->params[3].aifns);
- WSM_PUT8(buf, arg->params[2].aifns);
- WSM_PUT8(buf, arg->params[1].aifns);
- WSM_PUT8(buf, arg->params[0].aifns);
-
- WSM_PUT16(buf, arg->params[3].txop_limit);
- WSM_PUT16(buf, arg->params[2].txop_limit);
- WSM_PUT16(buf, arg->params[1].txop_limit);
- WSM_PUT16(buf, arg->params[0].txop_limit);
-
- WSM_PUT32(buf, arg->params[3].max_rx_lifetime);
- WSM_PUT32(buf, arg->params[2].max_rx_lifetime);
- WSM_PUT32(buf, arg->params[1].max_rx_lifetime);
- WSM_PUT32(buf, arg->params[0].max_rx_lifetime);
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_EDCA_PARAMS_REQ_ID, WSM_CMD_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_switch_channel(struct cw1200_common *priv,
- const struct wsm_switch_channel *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, arg->mode);
- WSM_PUT8(buf, arg->switch_count);
- WSM_PUT16(buf, arg->channel_number);
-
- priv->channel_switch_in_progress = 1;
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_SWITCH_CHANNEL_REQ_ID, WSM_CMD_TIMEOUT);
- if (ret)
- priv->channel_switch_in_progress = 0;
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- priv->ps_mode_switch_in_progress = 1;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, arg->mode);
- WSM_PUT8(buf, arg->fast_psm_idle_period);
- WSM_PUT8(buf, arg->ap_psm_change_period);
- WSM_PUT8(buf, arg->min_auto_pspoll_period);
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_SET_PM_REQ_ID, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_start(struct cw1200_common *priv, const struct wsm_start *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT8(buf, arg->mode);
- WSM_PUT8(buf, arg->band);
- WSM_PUT16(buf, arg->channel_number);
- WSM_PUT32(buf, arg->ct_window);
- WSM_PUT32(buf, arg->beacon_interval);
- WSM_PUT8(buf, arg->dtim_period);
- WSM_PUT8(buf, arg->preamble);
- WSM_PUT8(buf, arg->probe_delay);
- WSM_PUT8(buf, arg->ssid_len);
- WSM_PUT(buf, arg->ssid, sizeof(arg->ssid));
- WSM_PUT32(buf, arg->basic_rate_set);
-
- priv->tx_burst_idx = -1;
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_START_REQ_ID, WSM_CMD_START_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_beacon_transmit(struct cw1200_common *priv,
- const struct wsm_beacon_transmit *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT32(buf, arg->enable_beaconing ? 1 : 0);
-
- ret = wsm_cmd_send(priv, buf, NULL,
- WSM_BEACON_TRANSMIT_REQ_ID, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_start_find(struct cw1200_common *priv)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
- ret = wsm_cmd_send(priv, buf, NULL, 0x0019, WSM_CMD_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-}
-
-/* ******************************************************************** */
-
-int wsm_stop_find(struct cw1200_common *priv)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
- ret = wsm_cmd_send(priv, buf, NULL, 0x001A, WSM_CMD_TIMEOUT);
- wsm_cmd_unlock(priv);
- return ret;
-}
-
-/* ******************************************************************** */
-
-int wsm_map_link(struct cw1200_common *priv, const struct wsm_map_link *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
- u16 cmd = 0x001C | WSM_TX_LINK_ID(arg->link_id);
-
- wsm_cmd_lock(priv);
-
- WSM_PUT(buf, &arg->mac_addr[0], sizeof(arg->mac_addr));
- WSM_PUT16(buf, 0);
-
- ret = wsm_cmd_send(priv, buf, NULL, cmd, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-
-int wsm_update_ie(struct cw1200_common *priv,
- const struct wsm_update_ie *arg)
-{
- int ret;
- struct wsm_buf *buf = &priv->wsm_cmd_buf;
-
- wsm_cmd_lock(priv);
-
- WSM_PUT16(buf, arg->what);
- WSM_PUT16(buf, arg->count);
- WSM_PUT(buf, arg->ies, arg->length);
-
- ret = wsm_cmd_send(priv, buf, NULL, 0x001B, WSM_CMD_TIMEOUT);
-
- wsm_cmd_unlock(priv);
- return ret;
-
-nomem:
- wsm_cmd_unlock(priv);
- return -ENOMEM;
-}
-
-/* ******************************************************************** */
-int wsm_set_probe_responder(struct cw1200_common *priv, bool enable)
-{
- priv->rx_filter.probeResponder = enable;
- return wsm_set_rx_filter(priv, &priv->rx_filter);
-}
-
-/* ******************************************************************** */
-/* WSM indication events implementation */
-const char * const cw1200_fw_types[] = {
- "ETF",
- "WFM",
- "WSM",
- "HI test",
- "Platform test"
-};
-
-static int wsm_startup_indication(struct cw1200_common *priv,
- struct wsm_buf *buf)
-{
- priv->wsm_caps.input_buffers = WSM_GET16(buf);
- priv->wsm_caps.input_buffer_size = WSM_GET16(buf);
- priv->wsm_caps.hw_id = WSM_GET16(buf);
- priv->wsm_caps.hw_subid = WSM_GET16(buf);
- priv->wsm_caps.status = WSM_GET16(buf);
- priv->wsm_caps.fw_cap = WSM_GET16(buf);
- priv->wsm_caps.fw_type = WSM_GET16(buf);
- priv->wsm_caps.fw_api = WSM_GET16(buf);
- priv->wsm_caps.fw_build = WSM_GET16(buf);
- priv->wsm_caps.fw_ver = WSM_GET16(buf);
- WSM_GET(buf, priv->wsm_caps.fw_label, sizeof(priv->wsm_caps.fw_label));
- priv->wsm_caps.fw_label[sizeof(priv->wsm_caps.fw_label) - 1] = 0; /* Do not trust FW too much... */
-
- if (WARN_ON(priv->wsm_caps.status))
- return -EINVAL;
-
- if (WARN_ON(priv->wsm_caps.fw_type > 4))
- return -EINVAL;
-
- pr_info("CW1200 WSM init done.\n"
- " Input buffers: %d x %d bytes\n"
- " Hardware: %d.%d\n"
- " %s firmware [%s], ver: %d, build: %d,"
- " api: %d, cap: 0x%.4X\n",
- priv->wsm_caps.input_buffers,
- priv->wsm_caps.input_buffer_size,
- priv->wsm_caps.hw_id, priv->wsm_caps.hw_subid,
- cw1200_fw_types[priv->wsm_caps.fw_type],
- priv->wsm_caps.fw_label, priv->wsm_caps.fw_ver,
- priv->wsm_caps.fw_build,
- priv->wsm_caps.fw_api, priv->wsm_caps.fw_cap);
-
- /* Disable unsupported frequency bands */
- if (!(priv->wsm_caps.fw_cap & 0x1))
- priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
- if (!(priv->wsm_caps.fw_cap & 0x2))
- priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
-
- priv->firmware_ready = 1;
- wake_up(&priv->wsm_startup_done);
- return 0;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-static int wsm_receive_indication(struct cw1200_common *priv,
- int link_id,
- struct wsm_buf *buf,
- struct sk_buff **skb_p)
-{
- struct wsm_rx rx;
- struct ieee80211_hdr *hdr;
- size_t hdr_len;
- __le16 fctl;
-
- rx.status = WSM_GET32(buf);
- rx.channel_number = WSM_GET16(buf);
- rx.rx_rate = WSM_GET8(buf);
- rx.rcpi_rssi = WSM_GET8(buf);
- rx.flags = WSM_GET32(buf);
-
- /* FW Workaround: Drop probe resp or
- beacon when RSSI is 0
- */
- hdr = (struct ieee80211_hdr *)(*skb_p)->data;
-
- if (!rx.rcpi_rssi &&
- (ieee80211_is_probe_resp(hdr->frame_control) ||
- ieee80211_is_beacon(hdr->frame_control)))
- return 0;
-
- /* If no RSSI subscription has been made,
- * convert RCPI to RSSI here
- */
- if (!priv->cqm_use_rssi)
- rx.rcpi_rssi = rx.rcpi_rssi / 2 - 110;
-
- fctl = *(__le16 *)buf->data;
- hdr_len = buf->data - buf->begin;
- skb_pull(*skb_p, hdr_len);
- if (!rx.status && ieee80211_is_deauth(fctl)) {
- if (priv->join_status == CW1200_JOIN_STATUS_STA) {
- /* Shedule unjoin work */
- pr_debug("[WSM] Issue unjoin command (RX).\n");
- wsm_lock_tx_async(priv);
- if (queue_work(priv->workqueue,
- &priv->unjoin_work) <= 0)
- wsm_unlock_tx(priv);
- }
- }
- cw1200_rx_cb(priv, &rx, link_id, skb_p);
- if (*skb_p)
- skb_push(*skb_p, hdr_len);
-
- return 0;
-
-underflow:
- return -EINVAL;
-}
-
-static int wsm_event_indication(struct cw1200_common *priv, struct wsm_buf *buf)
-{
- int first;
- struct cw1200_wsm_event *event;
-
- if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) {
- /* STA is stopped. */
- return 0;
- }
-
- event = kzalloc(sizeof(struct cw1200_wsm_event), GFP_KERNEL);
- if (!event)
- return -ENOMEM;
-
- event->evt.id = WSM_GET32(buf);
- event->evt.data = WSM_GET32(buf);
-
- pr_debug("[WSM] Event: %d(%d)\n",
- event->evt.id, event->evt.data);
-
- spin_lock(&priv->event_queue_lock);
- first = list_empty(&priv->event_queue);
- list_add_tail(&event->link, &priv->event_queue);
- spin_unlock(&priv->event_queue_lock);
-
- if (first)
- queue_work(priv->workqueue, &priv->event_handler);
-
- return 0;
-
-underflow:
- kfree(event);
- return -EINVAL;
-}
-
-static int wsm_channel_switch_indication(struct cw1200_common *priv,
- struct wsm_buf *buf)
-{
- WARN_ON(WSM_GET32(buf));
-
- priv->channel_switch_in_progress = 0;
- wake_up(&priv->channel_switch_done);
-
- wsm_unlock_tx(priv);
-
- return 0;
-
-underflow:
- return -EINVAL;
-}
-
-static int wsm_set_pm_indication(struct cw1200_common *priv,
- struct wsm_buf *buf)
-{
- /* TODO: Check buf (struct wsm_set_pm_complete) for validity */
- if (priv->ps_mode_switch_in_progress) {
- priv->ps_mode_switch_in_progress = 0;
- wake_up(&priv->ps_mode_switch_done);
- }
- return 0;
-}
-
-static int wsm_scan_started(struct cw1200_common *priv, void *arg,
- struct wsm_buf *buf)
-{
- u32 status = WSM_GET32(buf);
- if (status != WSM_STATUS_SUCCESS) {
- cw1200_scan_failed_cb(priv);
- return -EINVAL;
- }
- return 0;
-
-underflow:
- WARN_ON(1);
- return -EINVAL;
-}
-
-static int wsm_scan_complete_indication(struct cw1200_common *priv,
- struct wsm_buf *buf)
-{
- struct wsm_scan_complete arg;
- arg.status = WSM_GET32(buf);
- arg.psm = WSM_GET8(buf);
- arg.num_channels = WSM_GET8(buf);
- cw1200_scan_complete_cb(priv, &arg);
-
- return 0;
-
-underflow:
- return -EINVAL;
-}
-
-static int wsm_join_complete_indication(struct cw1200_common *priv,
- struct wsm_buf *buf)
-{
- struct wsm_join_complete arg;
- arg.status = WSM_GET32(buf);
- pr_debug("[WSM] Join complete indication, status: %d\n", arg.status);
- cw1200_join_complete_cb(priv, &arg);
-
- return 0;
-
-underflow:
- return -EINVAL;
-}
-
-static int wsm_find_complete_indication(struct cw1200_common *priv,
- struct wsm_buf *buf)
-{
- pr_warn("Implement find_complete_indication\n");
- return 0;
-}
-
-static int wsm_ba_timeout_indication(struct cw1200_common *priv,
- struct wsm_buf *buf)
-{
- u32 dummy;
- u8 tid;
- u8 dummy2;
- u8 addr[ETH_ALEN];
-
- dummy = WSM_GET32(buf);
- tid = WSM_GET8(buf);
- dummy2 = WSM_GET8(buf);
- WSM_GET(buf, addr, ETH_ALEN);
-
- pr_info("BlockACK timeout, tid %d, addr %pM\n",
- tid, addr);
-
- return 0;
-
-underflow:
- return -EINVAL;
-}
-
-static int wsm_suspend_resume_indication(struct cw1200_common *priv,
- int link_id, struct wsm_buf *buf)
-{
- u32 flags;
- struct wsm_suspend_resume arg;
-
- flags = WSM_GET32(buf);
- arg.link_id = link_id;
- arg.stop = !(flags & 1);
- arg.multicast = !!(flags & 8);
- arg.queue = (flags >> 1) & 3;
-
- cw1200_suspend_resume(priv, &arg);
-
- return 0;
-
-underflow:
- return -EINVAL;
-}
-
-
-/* ******************************************************************** */
-/* WSM TX */
-
-static int wsm_cmd_send(struct cw1200_common *priv,
- struct wsm_buf *buf,
- void *arg, u16 cmd, long tmo)
-{
- size_t buf_len = buf->data - buf->begin;
- int ret;
-
- /* Don't bother if we're dead. */
- if (priv->bh_error) {
- ret = 0;
- goto done;
- }
-
- /* Block until the cmd buffer is completed. Tortuous. */
- spin_lock(&priv->wsm_cmd.lock);
- while (!priv->wsm_cmd.done) {
- spin_unlock(&priv->wsm_cmd.lock);
- spin_lock(&priv->wsm_cmd.lock);
- }
- priv->wsm_cmd.done = 0;
- spin_unlock(&priv->wsm_cmd.lock);
-
- if (cmd == WSM_WRITE_MIB_REQ_ID ||
- cmd == WSM_READ_MIB_REQ_ID)
- pr_debug("[WSM] >>> 0x%.4X [MIB: 0x%.4X] (%zu)\n",
- cmd, __le16_to_cpu(((__le16 *)buf->begin)[2]),
- buf_len);
- else
- pr_debug("[WSM] >>> 0x%.4X (%zu)\n", cmd, buf_len);
-
- /* Due to buggy SPI on CW1200, we need to
- * pad the message by a few bytes to ensure
- * that it's completely received.
- */
- buf_len += 4;
-
- /* Fill HI message header */
- /* BH will add sequence number */
- ((__le16 *)buf->begin)[0] = __cpu_to_le16(buf_len);
- ((__le16 *)buf->begin)[1] = __cpu_to_le16(cmd);
-
- spin_lock(&priv->wsm_cmd.lock);
- BUG_ON(priv->wsm_cmd.ptr);
- priv->wsm_cmd.ptr = buf->begin;
- priv->wsm_cmd.len = buf_len;
- priv->wsm_cmd.arg = arg;
- priv->wsm_cmd.cmd = cmd;
- spin_unlock(&priv->wsm_cmd.lock);
-
- cw1200_bh_wakeup(priv);
-
- /* Wait for command completion */
- ret = wait_event_timeout(priv->wsm_cmd_wq,
- priv->wsm_cmd.done, tmo);
-
- if (!ret && !priv->wsm_cmd.done) {
- spin_lock(&priv->wsm_cmd.lock);
- priv->wsm_cmd.done = 1;
- priv->wsm_cmd.ptr = NULL;
- spin_unlock(&priv->wsm_cmd.lock);
- if (priv->bh_error) {
- /* Return ok to help system cleanup */
- ret = 0;
- } else {
- pr_err("CMD req (0x%04x) stuck in firmware, killing BH\n", priv->wsm_cmd.cmd);
- print_hex_dump_bytes("REQDUMP: ", DUMP_PREFIX_NONE,
- buf->begin, buf_len);
- pr_err("Outstanding outgoing frames: %d\n", priv->hw_bufs_used);
-
- /* Kill BH thread to report the error to the top layer. */
- atomic_add(1, &priv->bh_term);
- wake_up(&priv->bh_wq);
- ret = -ETIMEDOUT;
- }
- } else {
- spin_lock(&priv->wsm_cmd.lock);
- BUG_ON(!priv->wsm_cmd.done);
- ret = priv->wsm_cmd.ret;
- spin_unlock(&priv->wsm_cmd.lock);
- }
-done:
- wsm_buf_reset(buf);
- return ret;
-}
-
-/* ******************************************************************** */
-/* WSM TX port control */
-
-void wsm_lock_tx(struct cw1200_common *priv)
-{
- wsm_cmd_lock(priv);
- if (atomic_add_return(1, &priv->tx_lock) == 1) {
- if (wsm_flush_tx(priv))
- pr_debug("[WSM] TX is locked.\n");
- }
- wsm_cmd_unlock(priv);
-}
-
-void wsm_lock_tx_async(struct cw1200_common *priv)
-{
- if (atomic_add_return(1, &priv->tx_lock) == 1)
- pr_debug("[WSM] TX is locked (async).\n");
-}
-
-bool wsm_flush_tx(struct cw1200_common *priv)
-{
- unsigned long timestamp = jiffies;
- bool pending = false;
- long timeout;
- int i;
-
- /* Flush must be called with TX lock held. */
- BUG_ON(!atomic_read(&priv->tx_lock));
-
- /* First check if we really need to do something.
- * It is safe to use unprotected access, as hw_bufs_used
- * can only decrements.
- */
- if (!priv->hw_bufs_used)
- return true;
-
- if (priv->bh_error) {
- /* In case of failure do not wait for magic. */
- pr_err("[WSM] Fatal error occurred, will not flush TX.\n");
- return false;
- } else {
- /* Get a timestamp of "oldest" frame */
- for (i = 0; i < 4; ++i)
- pending |= cw1200_queue_get_xmit_timestamp(
- &priv->tx_queue[i],
- &timestamp, 0xffffffff);
- /* If there's nothing pending, we're good */
- if (!pending)
- return true;
-
- timeout = timestamp + WSM_CMD_LAST_CHANCE_TIMEOUT - jiffies;
- if (timeout < 0 || wait_event_timeout(priv->bh_evt_wq,
- !priv->hw_bufs_used,
- timeout) <= 0) {
- /* Hmmm... Not good. Frame had stuck in firmware. */
- priv->bh_error = 1;
- wiphy_err(priv->hw->wiphy, "[WSM] TX Frames (%d) stuck in firmware, killing BH\n", priv->hw_bufs_used);
- wake_up(&priv->bh_wq);
- return false;
- }
-
- /* Ok, everything is flushed. */
- return true;
- }
-}
-
-void wsm_unlock_tx(struct cw1200_common *priv)
-{
- int tx_lock;
- tx_lock = atomic_sub_return(1, &priv->tx_lock);
- BUG_ON(tx_lock < 0);
-
- if (tx_lock == 0) {
- if (!priv->bh_error)
- cw1200_bh_wakeup(priv);
- pr_debug("[WSM] TX is unlocked.\n");
- }
-}
-
-/* ******************************************************************** */
-/* WSM RX */
-
-int wsm_handle_exception(struct cw1200_common *priv, u8 *data, size_t len)
-{
- struct wsm_buf buf;
- u32 reason;
- u32 reg[18];
- char fname[48];
- unsigned int i;
-
- static const char * const reason_str[] = {
- "undefined instruction",
- "prefetch abort",
- "data abort",
- "unknown error",
- };
-
- buf.begin = buf.data = data;
- buf.end = &buf.begin[len];
-
- reason = WSM_GET32(&buf);
- for (i = 0; i < ARRAY_SIZE(reg); ++i)
- reg[i] = WSM_GET32(&buf);
- WSM_GET(&buf, fname, sizeof(fname));
-
- if (reason < 4)
- wiphy_err(priv->hw->wiphy,
- "Firmware exception: %s.\n",
- reason_str[reason]);
- else
- wiphy_err(priv->hw->wiphy,
- "Firmware assert at %.*s, line %d\n",
- (int) sizeof(fname), fname, reg[1]);
-
- for (i = 0; i < 12; i += 4)
- wiphy_err(priv->hw->wiphy,
- "R%d: 0x%.8X, R%d: 0x%.8X, R%d: 0x%.8X, R%d: 0x%.8X,\n",
- i + 0, reg[i + 0], i + 1, reg[i + 1],
- i + 2, reg[i + 2], i + 3, reg[i + 3]);
- wiphy_err(priv->hw->wiphy,
- "R12: 0x%.8X, SP: 0x%.8X, LR: 0x%.8X, PC: 0x%.8X,\n",
- reg[i + 0], reg[i + 1], reg[i + 2], reg[i + 3]);
- i += 4;
- wiphy_err(priv->hw->wiphy,
- "CPSR: 0x%.8X, SPSR: 0x%.8X\n",
- reg[i + 0], reg[i + 1]);
-
- print_hex_dump_bytes("R1: ", DUMP_PREFIX_NONE,
- fname, sizeof(fname));
- return 0;
-
-underflow:
- wiphy_err(priv->hw->wiphy, "Firmware exception.\n");
- print_hex_dump_bytes("Exception: ", DUMP_PREFIX_NONE,
- data, len);
- return -EINVAL;
-}
-
-int wsm_handle_rx(struct cw1200_common *priv, u16 id,
- struct wsm_hdr *wsm, struct sk_buff **skb_p)
-{
- int ret = 0;
- struct wsm_buf wsm_buf;
- int link_id = (id >> 6) & 0x0F;
-
- /* Strip link id. */
- id &= ~WSM_TX_LINK_ID(WSM_TX_LINK_ID_MAX);
-
- wsm_buf.begin = (u8 *)&wsm[0];
- wsm_buf.data = (u8 *)&wsm[1];
- wsm_buf.end = &wsm_buf.begin[__le16_to_cpu(wsm->len)];
-
- pr_debug("[WSM] <<< 0x%.4X (%td)\n", id,
- wsm_buf.end - wsm_buf.begin);
-
- if (id == WSM_TX_CONFIRM_IND_ID) {
- ret = wsm_tx_confirm(priv, &wsm_buf, link_id);
- } else if (id == WSM_MULTI_TX_CONFIRM_ID) {
- ret = wsm_multi_tx_confirm(priv, &wsm_buf, link_id);
- } else if (id & 0x0400) {
- void *wsm_arg;
- u16 wsm_cmd;
-
- /* Do not trust FW too much. Protection against repeated
- * response and race condition removal (see above).
- */
- spin_lock(&priv->wsm_cmd.lock);
- wsm_arg = priv->wsm_cmd.arg;
- wsm_cmd = priv->wsm_cmd.cmd &
- ~WSM_TX_LINK_ID(WSM_TX_LINK_ID_MAX);
- priv->wsm_cmd.cmd = 0xFFFF;
- spin_unlock(&priv->wsm_cmd.lock);
-
- if (WARN_ON((id & ~0x0400) != wsm_cmd)) {
- /* Note that any non-zero is a fatal retcode. */
- ret = -EINVAL;
- goto out;
- }
-
- /* Note that wsm_arg can be NULL in case of timeout in
- * wsm_cmd_send().
- */
-
- switch (id) {
- case WSM_READ_MIB_RESP_ID:
- if (wsm_arg)
- ret = wsm_read_mib_confirm(priv, wsm_arg,
- &wsm_buf);
- break;
- case WSM_WRITE_MIB_RESP_ID:
- if (wsm_arg)
- ret = wsm_write_mib_confirm(priv, wsm_arg,
- &wsm_buf);
- break;
- case WSM_START_SCAN_RESP_ID:
- if (wsm_arg)
- ret = wsm_scan_started(priv, wsm_arg, &wsm_buf);
- break;
- case WSM_CONFIGURATION_RESP_ID:
- if (wsm_arg)
- ret = wsm_configuration_confirm(priv, wsm_arg,
- &wsm_buf);
- break;
- case WSM_JOIN_RESP_ID:
- if (wsm_arg)
- ret = wsm_join_confirm(priv, wsm_arg, &wsm_buf);
- break;
- case WSM_STOP_SCAN_RESP_ID:
- case WSM_RESET_RESP_ID:
- case WSM_ADD_KEY_RESP_ID:
- case WSM_REMOVE_KEY_RESP_ID:
- case WSM_SET_PM_RESP_ID:
- case WSM_SET_BSS_PARAMS_RESP_ID:
- case 0x0412: /* set_tx_queue_params */
- case WSM_EDCA_PARAMS_RESP_ID:
- case WSM_SWITCH_CHANNEL_RESP_ID:
- case WSM_START_RESP_ID:
- case WSM_BEACON_TRANSMIT_RESP_ID:
- case 0x0419: /* start_find */
- case 0x041A: /* stop_find */
- case 0x041B: /* update_ie */
- case 0x041C: /* map_link */
- WARN_ON(wsm_arg != NULL);
- ret = wsm_generic_confirm(priv, wsm_arg, &wsm_buf);
- if (ret) {
- wiphy_warn(priv->hw->wiphy,
- "wsm_generic_confirm failed for request 0x%04x.\n",
- id & ~0x0400);
-
- /* often 0x407 and 0x410 occur, this means we're dead.. */
- if (priv->join_status >= CW1200_JOIN_STATUS_JOINING) {
- wsm_lock_tx(priv);
- if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
- wsm_unlock_tx(priv);
- }
- }
- break;
- default:
- wiphy_warn(priv->hw->wiphy,
- "Unrecognized confirmation 0x%04x\n",
- id & ~0x0400);
- }
-
- spin_lock(&priv->wsm_cmd.lock);
- priv->wsm_cmd.ret = ret;
- priv->wsm_cmd.done = 1;
- spin_unlock(&priv->wsm_cmd.lock);
-
- ret = 0; /* Error response from device should ne stop BH. */
-
- wake_up(&priv->wsm_cmd_wq);
- } else if (id & 0x0800) {
- switch (id) {
- case WSM_STARTUP_IND_ID:
- ret = wsm_startup_indication(priv, &wsm_buf);
- break;
- case WSM_RECEIVE_IND_ID:
- ret = wsm_receive_indication(priv, link_id,
- &wsm_buf, skb_p);
- break;
- case 0x0805:
- ret = wsm_event_indication(priv, &wsm_buf);
- break;
- case WSM_SCAN_COMPLETE_IND_ID:
- ret = wsm_scan_complete_indication(priv, &wsm_buf);
- break;
- case 0x0808:
- ret = wsm_ba_timeout_indication(priv, &wsm_buf);
- break;
- case 0x0809:
- ret = wsm_set_pm_indication(priv, &wsm_buf);
- break;
- case 0x080A:
- ret = wsm_channel_switch_indication(priv, &wsm_buf);
- break;
- case 0x080B:
- ret = wsm_find_complete_indication(priv, &wsm_buf);
- break;
- case 0x080C:
- ret = wsm_suspend_resume_indication(priv,
- link_id, &wsm_buf);
- break;
- case 0x080F:
- ret = wsm_join_complete_indication(priv, &wsm_buf);
- break;
- default:
- pr_warn("Unrecognised WSM ID %04x\n", id);
- }
- } else {
- WARN_ON(1);
- ret = -EINVAL;
- }
-out:
- return ret;
-}
-
-static bool wsm_handle_tx_data(struct cw1200_common *priv,
- struct wsm_tx *wsm,
- const struct ieee80211_tx_info *tx_info,
- const struct cw1200_txpriv *txpriv,
- struct cw1200_queue *queue)
-{
- bool handled = false;
- const struct ieee80211_hdr *frame =
- (struct ieee80211_hdr *)&((u8 *)wsm)[txpriv->offset];
- __le16 fctl = frame->frame_control;
- enum {
- do_probe,
- do_drop,
- do_wep,
- do_tx,
- } action = do_tx;
-
- switch (priv->mode) {
- case NL80211_IFTYPE_STATION:
- if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
- action = do_tx;
- else if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA)
- action = do_drop;
- break;
- case NL80211_IFTYPE_AP:
- if (!priv->join_status) {
- action = do_drop;
- } else if (!(BIT(txpriv->raw_link_id) &
- (BIT(0) | priv->link_id_map))) {
- wiphy_warn(priv->hw->wiphy,
- "A frame with expired link id is dropped.\n");
- action = do_drop;
- }
- if (cw1200_queue_get_generation(wsm->packet_id) >
- CW1200_MAX_REQUEUE_ATTEMPTS) {
- /* HACK!!! WSM324 firmware has tendency to requeue
- * multicast frames in a loop, causing performance
- * drop and high power consumption of the driver.
- * In this situation it is better just to drop
- * the problematic frame.
- */
- wiphy_warn(priv->hw->wiphy,
- "Too many attempts to requeue a frame; dropped.\n");
- action = do_drop;
- }
- break;
- case NL80211_IFTYPE_ADHOC:
- if (priv->join_status != CW1200_JOIN_STATUS_IBSS)
- action = do_drop;
- break;
- case NL80211_IFTYPE_MESH_POINT:
- action = do_tx; /* TODO: Test me! */
- break;
- case NL80211_IFTYPE_MONITOR:
- default:
- action = do_drop;
- break;
- }
-
- if (action == do_tx) {
- if (ieee80211_is_nullfunc(fctl)) {
- spin_lock(&priv->bss_loss_lock);
- if (priv->bss_loss_state) {
- priv->bss_loss_confirm_id = wsm->packet_id;
- wsm->queue_id = WSM_QUEUE_VOICE;
- }
- spin_unlock(&priv->bss_loss_lock);
- } else if (ieee80211_is_probe_req(fctl)) {
- action = do_probe;
- } else if (ieee80211_is_deauth(fctl) &&
- priv->mode != NL80211_IFTYPE_AP) {
- pr_debug("[WSM] Issue unjoin command due to tx deauth.\n");
- wsm_lock_tx_async(priv);
- if (queue_work(priv->workqueue,
- &priv->unjoin_work) <= 0)
- wsm_unlock_tx(priv);
- } else if (ieee80211_has_protected(fctl) &&
- tx_info->control.hw_key &&
- tx_info->control.hw_key->keyidx != priv->wep_default_key_id &&
- (tx_info->control.hw_key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
- tx_info->control.hw_key->cipher == WLAN_CIPHER_SUITE_WEP104)) {
- action = do_wep;
- }
- }
-
- switch (action) {
- case do_probe:
- /* An interesting FW "feature". Device filters probe responses.
- * The easiest way to get it back is to convert
- * probe request into WSM start_scan command.
- */
- pr_debug("[WSM] Convert probe request to scan.\n");
- wsm_lock_tx_async(priv);
- priv->pending_frame_id = wsm->packet_id;
- if (queue_delayed_work(priv->workqueue,
- &priv->scan.probe_work, 0) <= 0)
- wsm_unlock_tx(priv);
- handled = true;
- break;
- case do_drop:
- pr_debug("[WSM] Drop frame (0x%.4X).\n", fctl);
- BUG_ON(cw1200_queue_remove(queue, wsm->packet_id));
- handled = true;
- break;
- case do_wep:
- pr_debug("[WSM] Issue set_default_wep_key.\n");
- wsm_lock_tx_async(priv);
- priv->wep_default_key_id = tx_info->control.hw_key->keyidx;
- priv->pending_frame_id = wsm->packet_id;
- if (queue_work(priv->workqueue, &priv->wep_key_work) <= 0)
- wsm_unlock_tx(priv);
- handled = true;
- break;
- case do_tx:
- pr_debug("[WSM] Transmit frame.\n");
- break;
- default:
- /* Do nothing */
- break;
- }
- return handled;
-}
-
-static int cw1200_get_prio_queue(struct cw1200_common *priv,
- u32 link_id_map, int *total)
-{
- static const int urgent = BIT(CW1200_LINK_ID_AFTER_DTIM) |
- BIT(CW1200_LINK_ID_UAPSD);
- struct wsm_edca_queue_params *edca;
- unsigned score, best = -1;
- int winner = -1;
- int queued;
- int i;
-
- /* search for a winner using edca params */
- for (i = 0; i < 4; ++i) {
- queued = cw1200_queue_get_num_queued(&priv->tx_queue[i],
- link_id_map);
- if (!queued)
- continue;
- *total += queued;
- edca = &priv->edca.params[i];
- score = ((edca->aifns + edca->cwmin) << 16) +
- ((edca->cwmax - edca->cwmin) *
- (get_random_int() & 0xFFFF));
- if (score < best && (winner < 0 || i != 3)) {
- best = score;
- winner = i;
- }
- }
-
- /* override winner if bursting */
- if (winner >= 0 && priv->tx_burst_idx >= 0 &&
- winner != priv->tx_burst_idx &&
- !cw1200_queue_get_num_queued(
- &priv->tx_queue[winner],
- link_id_map & urgent) &&
- cw1200_queue_get_num_queued(
- &priv->tx_queue[priv->tx_burst_idx],
- link_id_map))
- winner = priv->tx_burst_idx;
-
- return winner;
-}
-
-static int wsm_get_tx_queue_and_mask(struct cw1200_common *priv,
- struct cw1200_queue **queue_p,
- u32 *tx_allowed_mask_p,
- bool *more)
-{
- int idx;
- u32 tx_allowed_mask;
- int total = 0;
-
- /* Search for a queue with multicast frames buffered */
- if (priv->tx_multicast) {
- tx_allowed_mask = BIT(CW1200_LINK_ID_AFTER_DTIM);
- idx = cw1200_get_prio_queue(priv,
- tx_allowed_mask, &total);
- if (idx >= 0) {
- *more = total > 1;
- goto found;
- }
- }
-
- /* Search for unicast traffic */
- tx_allowed_mask = ~priv->sta_asleep_mask;
- tx_allowed_mask |= BIT(CW1200_LINK_ID_UAPSD);
- if (priv->sta_asleep_mask) {
- tx_allowed_mask |= priv->pspoll_mask;
- tx_allowed_mask &= ~BIT(CW1200_LINK_ID_AFTER_DTIM);
- } else {
- tx_allowed_mask |= BIT(CW1200_LINK_ID_AFTER_DTIM);
- }
- idx = cw1200_get_prio_queue(priv,
- tx_allowed_mask, &total);
- if (idx < 0)
- return -ENOENT;
-
-found:
- *queue_p = &priv->tx_queue[idx];
- *tx_allowed_mask_p = tx_allowed_mask;
- return 0;
-}
-
-int wsm_get_tx(struct cw1200_common *priv, u8 **data,
- size_t *tx_len, int *burst)
-{
- struct wsm_tx *wsm = NULL;
- struct ieee80211_tx_info *tx_info;
- struct cw1200_queue *queue = NULL;
- int queue_num;
- u32 tx_allowed_mask = 0;
- const struct cw1200_txpriv *txpriv = NULL;
- int count = 0;
-
- /* More is used only for broadcasts. */
- bool more = false;
-
- if (priv->wsm_cmd.ptr) { /* CMD request */
- ++count;
- spin_lock(&priv->wsm_cmd.lock);
- BUG_ON(!priv->wsm_cmd.ptr);
- *data = priv->wsm_cmd.ptr;
- *tx_len = priv->wsm_cmd.len;
- *burst = 1;
- spin_unlock(&priv->wsm_cmd.lock);
- } else {
- for (;;) {
- int ret;
-
- if (atomic_add_return(0, &priv->tx_lock))
- break;
-
- spin_lock_bh(&priv->ps_state_lock);
-
- ret = wsm_get_tx_queue_and_mask(priv, &queue,
- &tx_allowed_mask, &more);
- queue_num = queue - priv->tx_queue;
-
- if (priv->buffered_multicasts &&
- (ret || !more) &&
- (priv->tx_multicast || !priv->sta_asleep_mask)) {
- priv->buffered_multicasts = false;
- if (priv->tx_multicast) {
- priv->tx_multicast = false;
- queue_work(priv->workqueue,
- &priv->multicast_stop_work);
- }
- }
-
- spin_unlock_bh(&priv->ps_state_lock);
-
- if (ret)
- break;
-
- if (cw1200_queue_get(queue,
- tx_allowed_mask,
- &wsm, &tx_info, &txpriv))
- continue;
-
- if (wsm_handle_tx_data(priv, wsm,
- tx_info, txpriv, queue))
- continue; /* Handled by WSM */
-
- wsm->hdr.id &= __cpu_to_le16(
- ~WSM_TX_LINK_ID(WSM_TX_LINK_ID_MAX));
- wsm->hdr.id |= cpu_to_le16(
- WSM_TX_LINK_ID(txpriv->raw_link_id));
- priv->pspoll_mask &= ~BIT(txpriv->raw_link_id);
-
- *data = (u8 *)wsm;
- *tx_len = __le16_to_cpu(wsm->hdr.len);
-
- /* allow bursting if txop is set */
- if (priv->edca.params[queue_num].txop_limit)
- *burst = min(*burst,
- (int)cw1200_queue_get_num_queued(queue, tx_allowed_mask) + 1);
- else
- *burst = 1;
-
- /* store index of bursting queue */
- if (*burst > 1)
- priv->tx_burst_idx = queue_num;
- else
- priv->tx_burst_idx = -1;
-
- if (more) {
- struct ieee80211_hdr *hdr =
- (struct ieee80211_hdr *)
- &((u8 *)wsm)[txpriv->offset];
- /* more buffered multicast/broadcast frames
- * ==> set MoreData flag in IEEE 802.11 header
- * to inform PS STAs
- */
- hdr->frame_control |=
- cpu_to_le16(IEEE80211_FCTL_MOREDATA);
- }
-
- pr_debug("[WSM] >>> 0x%.4X (%zu) %p %c\n",
- 0x0004, *tx_len, *data,
- wsm->more ? 'M' : ' ');
- ++count;
- break;
- }
- }
-
- return count;
-}
-
-void wsm_txed(struct cw1200_common *priv, u8 *data)
-{
- if (data == priv->wsm_cmd.ptr) {
- spin_lock(&priv->wsm_cmd.lock);
- priv->wsm_cmd.ptr = NULL;
- spin_unlock(&priv->wsm_cmd.lock);
- }
-}
-
-/* ******************************************************************** */
-/* WSM buffer */
-
-void wsm_buf_init(struct wsm_buf *buf)
-{
- BUG_ON(buf->begin);
- buf->begin = kmalloc(FWLOAD_BLOCK_SIZE, GFP_KERNEL | GFP_DMA);
- buf->end = buf->begin ? &buf->begin[FWLOAD_BLOCK_SIZE] : buf->begin;
- wsm_buf_reset(buf);
-}
-
-void wsm_buf_deinit(struct wsm_buf *buf)
-{
- kfree(buf->begin);
- buf->begin = buf->data = buf->end = NULL;
-}
-
-static void wsm_buf_reset(struct wsm_buf *buf)
-{
- if (buf->begin) {
- buf->data = &buf->begin[4];
- *(u32 *)buf->begin = 0;
- } else {
- buf->data = buf->begin;
- }
-}
-
-static int wsm_buf_reserve(struct wsm_buf *buf, size_t extra_size)
-{
- size_t pos = buf->data - buf->begin;
- size_t size = pos + extra_size;
-
- size = round_up(size, FWLOAD_BLOCK_SIZE);
-
- buf->begin = krealloc(buf->begin, size, GFP_KERNEL | GFP_DMA);
- if (buf->begin) {
- buf->data = &buf->begin[pos];
- buf->end = &buf->begin[size];
- return 0;
- } else {
- buf->end = buf->data = buf->begin;
- return -ENOMEM;
- }
-}