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linux/drivers/net/wireless/ath/ath10k/htt.c
Raja Mani d9156b5f68 ath10k: configure frag desc memory to target for qca99X0 
Pre qca99X0 chipsets follows the model where dynamically allocate
memory for frag desc on getting new skb for TX. But, this is not
going to be the case in qca99X0. It expects frag desc memory to be
allocated at boot time and let the driver to reuse allocated memory
after every TX completion. So there won't be any dynamic frag memory
memory allocation in qca99X0 during data transmission.

qca99X0 hardware doesn't need fragment desc address to be programmed
in msdu descriptor for every data transaction. It needs to know only
starting address of fragment descriptor at the time of the boot.
During data transmission, qca99X0 hardware can retrieve corresponding
frag addr by adding programmed frag desc base addr + msdu id.

Allocate continuous fragment descriptor memory (same size as number of
descriptor) at the time of target initialization and configure allocated
dma address to the target via HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG.

How this is allocated continuous memory is going to be used is not
covered in this patch. It just allocates memory and hand over to firmware.
If we don't do it at init time, qca99X0 will stall when firmware tries
to do TX.

Signed-off-by: Raja Mani <rmani@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2015-07-02 08:47:23 +03:00

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/*
* Copyright (c) 2005-2011 Atheros Communications Inc.
* Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/slab.h>
#include <linux/if_ether.h>
#include "htt.h"
#include "core.h"
#include "debug.h"
static const enum htt_t2h_msg_type htt_main_t2h_msg_types[] = {
[HTT_MAIN_T2H_MSG_TYPE_VERSION_CONF] = HTT_T2H_MSG_TYPE_VERSION_CONF,
[HTT_MAIN_T2H_MSG_TYPE_RX_IND] = HTT_T2H_MSG_TYPE_RX_IND,
[HTT_MAIN_T2H_MSG_TYPE_RX_FLUSH] = HTT_T2H_MSG_TYPE_RX_FLUSH,
[HTT_MAIN_T2H_MSG_TYPE_PEER_MAP] = HTT_T2H_MSG_TYPE_PEER_MAP,
[HTT_MAIN_T2H_MSG_TYPE_PEER_UNMAP] = HTT_T2H_MSG_TYPE_PEER_UNMAP,
[HTT_MAIN_T2H_MSG_TYPE_RX_ADDBA] = HTT_T2H_MSG_TYPE_RX_ADDBA,
[HTT_MAIN_T2H_MSG_TYPE_RX_DELBA] = HTT_T2H_MSG_TYPE_RX_DELBA,
[HTT_MAIN_T2H_MSG_TYPE_TX_COMPL_IND] = HTT_T2H_MSG_TYPE_TX_COMPL_IND,
[HTT_MAIN_T2H_MSG_TYPE_PKTLOG] = HTT_T2H_MSG_TYPE_PKTLOG,
[HTT_MAIN_T2H_MSG_TYPE_STATS_CONF] = HTT_T2H_MSG_TYPE_STATS_CONF,
[HTT_MAIN_T2H_MSG_TYPE_RX_FRAG_IND] = HTT_T2H_MSG_TYPE_RX_FRAG_IND,
[HTT_MAIN_T2H_MSG_TYPE_SEC_IND] = HTT_T2H_MSG_TYPE_SEC_IND,
[HTT_MAIN_T2H_MSG_TYPE_TX_INSPECT_IND] =
HTT_T2H_MSG_TYPE_TX_INSPECT_IND,
[HTT_MAIN_T2H_MSG_TYPE_MGMT_TX_COMPL_IND] =
HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION,
[HTT_MAIN_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND] =
HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND,
[HTT_MAIN_T2H_MSG_TYPE_RX_PN_IND] = HTT_T2H_MSG_TYPE_RX_PN_IND,
[HTT_MAIN_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND] =
HTT_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND,
[HTT_MAIN_T2H_MSG_TYPE_TEST] = HTT_T2H_MSG_TYPE_TEST,
};
static const enum htt_t2h_msg_type htt_10x_t2h_msg_types[] = {
[HTT_10X_T2H_MSG_TYPE_VERSION_CONF] = HTT_T2H_MSG_TYPE_VERSION_CONF,
[HTT_10X_T2H_MSG_TYPE_RX_IND] = HTT_T2H_MSG_TYPE_RX_IND,
[HTT_10X_T2H_MSG_TYPE_RX_FLUSH] = HTT_T2H_MSG_TYPE_RX_FLUSH,
[HTT_10X_T2H_MSG_TYPE_PEER_MAP] = HTT_T2H_MSG_TYPE_PEER_MAP,
[HTT_10X_T2H_MSG_TYPE_PEER_UNMAP] = HTT_T2H_MSG_TYPE_PEER_UNMAP,
[HTT_10X_T2H_MSG_TYPE_RX_ADDBA] = HTT_T2H_MSG_TYPE_RX_ADDBA,
[HTT_10X_T2H_MSG_TYPE_RX_DELBA] = HTT_T2H_MSG_TYPE_RX_DELBA,
[HTT_10X_T2H_MSG_TYPE_TX_COMPL_IND] = HTT_T2H_MSG_TYPE_TX_COMPL_IND,
[HTT_10X_T2H_MSG_TYPE_PKTLOG] = HTT_T2H_MSG_TYPE_PKTLOG,
[HTT_10X_T2H_MSG_TYPE_STATS_CONF] = HTT_T2H_MSG_TYPE_STATS_CONF,
[HTT_10X_T2H_MSG_TYPE_RX_FRAG_IND] = HTT_T2H_MSG_TYPE_RX_FRAG_IND,
[HTT_10X_T2H_MSG_TYPE_SEC_IND] = HTT_T2H_MSG_TYPE_SEC_IND,
[HTT_10X_T2H_MSG_TYPE_RC_UPDATE_IND] = HTT_T2H_MSG_TYPE_RC_UPDATE_IND,
[HTT_10X_T2H_MSG_TYPE_TX_INSPECT_IND] = HTT_T2H_MSG_TYPE_TX_INSPECT_IND,
[HTT_10X_T2H_MSG_TYPE_TEST] = HTT_T2H_MSG_TYPE_TEST,
[HTT_10X_T2H_MSG_TYPE_CHAN_CHANGE] = HTT_T2H_MSG_TYPE_CHAN_CHANGE,
[HTT_10X_T2H_MSG_TYPE_AGGR_CONF] = HTT_T2H_MSG_TYPE_AGGR_CONF,
[HTT_10X_T2H_MSG_TYPE_STATS_NOUPLOAD] = HTT_T2H_MSG_TYPE_STATS_NOUPLOAD,
[HTT_10X_T2H_MSG_TYPE_MGMT_TX_COMPL_IND] =
HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION,
};
static const enum htt_t2h_msg_type htt_tlv_t2h_msg_types[] = {
[HTT_TLV_T2H_MSG_TYPE_VERSION_CONF] = HTT_T2H_MSG_TYPE_VERSION_CONF,
[HTT_TLV_T2H_MSG_TYPE_RX_IND] = HTT_T2H_MSG_TYPE_RX_IND,
[HTT_TLV_T2H_MSG_TYPE_RX_FLUSH] = HTT_T2H_MSG_TYPE_RX_FLUSH,
[HTT_TLV_T2H_MSG_TYPE_PEER_MAP] = HTT_T2H_MSG_TYPE_PEER_MAP,
[HTT_TLV_T2H_MSG_TYPE_PEER_UNMAP] = HTT_T2H_MSG_TYPE_PEER_UNMAP,
[HTT_TLV_T2H_MSG_TYPE_RX_ADDBA] = HTT_T2H_MSG_TYPE_RX_ADDBA,
[HTT_TLV_T2H_MSG_TYPE_RX_DELBA] = HTT_T2H_MSG_TYPE_RX_DELBA,
[HTT_TLV_T2H_MSG_TYPE_TX_COMPL_IND] = HTT_T2H_MSG_TYPE_TX_COMPL_IND,
[HTT_TLV_T2H_MSG_TYPE_PKTLOG] = HTT_T2H_MSG_TYPE_PKTLOG,
[HTT_TLV_T2H_MSG_TYPE_STATS_CONF] = HTT_T2H_MSG_TYPE_STATS_CONF,
[HTT_TLV_T2H_MSG_TYPE_RX_FRAG_IND] = HTT_T2H_MSG_TYPE_RX_FRAG_IND,
[HTT_TLV_T2H_MSG_TYPE_SEC_IND] = HTT_T2H_MSG_TYPE_SEC_IND,
[HTT_TLV_T2H_MSG_TYPE_RC_UPDATE_IND] = HTT_T2H_MSG_TYPE_RC_UPDATE_IND,
[HTT_TLV_T2H_MSG_TYPE_TX_INSPECT_IND] = HTT_T2H_MSG_TYPE_TX_INSPECT_IND,
[HTT_TLV_T2H_MSG_TYPE_MGMT_TX_COMPL_IND] =
HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION,
[HTT_TLV_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND] =
HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND,
[HTT_TLV_T2H_MSG_TYPE_RX_PN_IND] = HTT_T2H_MSG_TYPE_RX_PN_IND,
[HTT_TLV_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND] =
HTT_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND,
[HTT_TLV_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND] =
HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND,
[HTT_TLV_T2H_MSG_TYPE_WDI_IPA_OP_RESPONSE] =
HTT_T2H_MSG_TYPE_WDI_IPA_OP_RESPONSE,
[HTT_TLV_T2H_MSG_TYPE_CHAN_CHANGE] = HTT_T2H_MSG_TYPE_CHAN_CHANGE,
[HTT_TLV_T2H_MSG_TYPE_RX_OFLD_PKT_ERR] =
HTT_T2H_MSG_TYPE_RX_OFLD_PKT_ERR,
[HTT_TLV_T2H_MSG_TYPE_TEST] = HTT_T2H_MSG_TYPE_TEST,
};
static const enum htt_t2h_msg_type htt_10_4_t2h_msg_types[] = {
[HTT_10_4_T2H_MSG_TYPE_VERSION_CONF] = HTT_T2H_MSG_TYPE_VERSION_CONF,
[HTT_10_4_T2H_MSG_TYPE_RX_IND] = HTT_T2H_MSG_TYPE_RX_IND,
[HTT_10_4_T2H_MSG_TYPE_RX_FLUSH] = HTT_T2H_MSG_TYPE_RX_FLUSH,
[HTT_10_4_T2H_MSG_TYPE_PEER_MAP] = HTT_T2H_MSG_TYPE_PEER_MAP,
[HTT_10_4_T2H_MSG_TYPE_PEER_UNMAP] = HTT_T2H_MSG_TYPE_PEER_UNMAP,
[HTT_10_4_T2H_MSG_TYPE_RX_ADDBA] = HTT_T2H_MSG_TYPE_RX_ADDBA,
[HTT_10_4_T2H_MSG_TYPE_RX_DELBA] = HTT_T2H_MSG_TYPE_RX_DELBA,
[HTT_10_4_T2H_MSG_TYPE_TX_COMPL_IND] = HTT_T2H_MSG_TYPE_TX_COMPL_IND,
[HTT_10_4_T2H_MSG_TYPE_PKTLOG] = HTT_T2H_MSG_TYPE_PKTLOG,
[HTT_10_4_T2H_MSG_TYPE_STATS_CONF] = HTT_T2H_MSG_TYPE_STATS_CONF,
[HTT_10_4_T2H_MSG_TYPE_RX_FRAG_IND] = HTT_T2H_MSG_TYPE_RX_FRAG_IND,
[HTT_10_4_T2H_MSG_TYPE_SEC_IND] = HTT_T2H_MSG_TYPE_SEC_IND,
[HTT_10_4_T2H_MSG_TYPE_RC_UPDATE_IND] = HTT_T2H_MSG_TYPE_RC_UPDATE_IND,
[HTT_10_4_T2H_MSG_TYPE_TX_INSPECT_IND] =
HTT_T2H_MSG_TYPE_TX_INSPECT_IND,
[HTT_10_4_T2H_MSG_TYPE_MGMT_TX_COMPL_IND] =
HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION,
[HTT_10_4_T2H_MSG_TYPE_CHAN_CHANGE] = HTT_T2H_MSG_TYPE_CHAN_CHANGE,
[HTT_10_4_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND] =
HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND,
[HTT_10_4_T2H_MSG_TYPE_RX_PN_IND] = HTT_T2H_MSG_TYPE_RX_PN_IND,
[HTT_10_4_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND] =
HTT_T2H_MSG_TYPE_RX_OFFLOAD_DELIVER_IND,
[HTT_10_4_T2H_MSG_TYPE_TEST] = HTT_T2H_MSG_TYPE_TEST,
[HTT_10_4_T2H_MSG_TYPE_EN_STATS] = HTT_T2H_MSG_TYPE_EN_STATS,
[HTT_10_4_T2H_MSG_TYPE_AGGR_CONF] = HTT_T2H_MSG_TYPE_AGGR_CONF,
[HTT_10_4_T2H_MSG_TYPE_TX_FETCH_IND] =
HTT_T2H_MSG_TYPE_TX_FETCH_IND,
[HTT_10_4_T2H_MSG_TYPE_TX_FETCH_CONF] =
HTT_T2H_MSG_TYPE_TX_FETCH_CONF,
[HTT_10_4_T2H_MSG_TYPE_STATS_NOUPLOAD] =
HTT_T2H_MSG_TYPE_STATS_NOUPLOAD,
[HTT_10_4_T2H_MSG_TYPE_TX_LOW_LATENCY_IND] =
HTT_T2H_MSG_TYPE_TX_LOW_LATENCY_IND,
};
int ath10k_htt_connect(struct ath10k_htt *htt)
{
struct ath10k_htc_svc_conn_req conn_req;
struct ath10k_htc_svc_conn_resp conn_resp;
int status;
memset(&conn_req, 0, sizeof(conn_req));
memset(&conn_resp, 0, sizeof(conn_resp));
conn_req.ep_ops.ep_tx_complete = ath10k_htt_htc_tx_complete;
conn_req.ep_ops.ep_rx_complete = ath10k_htt_t2h_msg_handler;
/* connect to control service */
conn_req.service_id = ATH10K_HTC_SVC_ID_HTT_DATA_MSG;
status = ath10k_htc_connect_service(&htt->ar->htc, &conn_req,
&conn_resp);
if (status)
return status;
htt->eid = conn_resp.eid;
return 0;
}
int ath10k_htt_init(struct ath10k *ar)
{
struct ath10k_htt *htt = &ar->htt;
htt->ar = ar;
/*
* Prefetch enough data to satisfy target
* classification engine.
* This is for LL chips. HL chips will probably
* transfer all frame in the tx fragment.
*/
htt->prefetch_len =
36 + /* 802.11 + qos + ht */
4 + /* 802.1q */
8 + /* llc snap */
2; /* ip4 dscp or ip6 priority */
switch (ar->htt.op_version) {
case ATH10K_FW_HTT_OP_VERSION_10_4:
ar->htt.t2h_msg_types = htt_10_4_t2h_msg_types;
ar->htt.t2h_msg_types_max = HTT_10_4_T2H_NUM_MSGS;
break;
case ATH10K_FW_HTT_OP_VERSION_10_1:
ar->htt.t2h_msg_types = htt_10x_t2h_msg_types;
ar->htt.t2h_msg_types_max = HTT_10X_T2H_NUM_MSGS;
break;
case ATH10K_FW_HTT_OP_VERSION_TLV:
ar->htt.t2h_msg_types = htt_tlv_t2h_msg_types;
ar->htt.t2h_msg_types_max = HTT_TLV_T2H_NUM_MSGS;
break;
case ATH10K_FW_HTT_OP_VERSION_MAIN:
ar->htt.t2h_msg_types = htt_main_t2h_msg_types;
ar->htt.t2h_msg_types_max = HTT_MAIN_T2H_NUM_MSGS;
break;
case ATH10K_FW_HTT_OP_VERSION_MAX:
case ATH10K_FW_HTT_OP_VERSION_UNSET:
WARN_ON(1);
return -EINVAL;
}
return 0;
}
#define HTT_TARGET_VERSION_TIMEOUT_HZ (3*HZ)
static int ath10k_htt_verify_version(struct ath10k_htt *htt)
{
struct ath10k *ar = htt->ar;
ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt target version %d.%d\n",
htt->target_version_major, htt->target_version_minor);
if (htt->target_version_major != 2 &&
htt->target_version_major != 3) {
ath10k_err(ar, "unsupported htt major version %d. supported versions are 2 and 3\n",
htt->target_version_major);
return -ENOTSUPP;
}
return 0;
}
int ath10k_htt_setup(struct ath10k_htt *htt)
{
struct ath10k *ar = htt->ar;
int status;
init_completion(&htt->target_version_received);
status = ath10k_htt_h2t_ver_req_msg(htt);
if (status)
return status;
status = wait_for_completion_timeout(&htt->target_version_received,
HTT_TARGET_VERSION_TIMEOUT_HZ);
if (status == 0) {
ath10k_warn(ar, "htt version request timed out\n");
return -ETIMEDOUT;
}
status = ath10k_htt_verify_version(htt);
if (status)
return status;
status = ath10k_htt_send_frag_desc_bank_cfg(htt);
if (status)
return status;
return ath10k_htt_send_rx_ring_cfg_ll(htt);
}
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