#include <linux/skbuff.h>
#include <linux/ctype.h>
#include "debug.h"
#include "hif.h"
struct sk_buff *ath11k_htc_alloc_skb(struct ath11k_base *ab, int size)
{
struct sk_buff *skb;
skb = dev_alloc_skb(size + sizeof(struct ath11k_htc_hdr));
if (!skb)
return NULL;
skb_reserve(skb, sizeof(struct ath11k_htc_hdr));
if (!IS_ALIGNED((unsigned long)skb->data, 4))
ath11k_warn(ab, "Unaligned HTC tx skb\n");
return skb;
}
static void ath11k_htc_control_tx_complete(struct ath11k_base *ab,
struct sk_buff *skb)
{
kfree_skb(skb);
}
static struct sk_buff *ath11k_htc_build_tx_ctrl_skb(void *ab)
{
struct sk_buff *skb;
struct ath11k_skb_cb *skb_cb;
skb = dev_alloc_skb(ATH11K_HTC_CONTROL_BUFFER_SIZE);
if (!skb)
return NULL;
skb_reserve(skb, sizeof(struct ath11k_htc_hdr));
WARN_ON_ONCE(!IS_ALIGNED((unsigned long)skb->data, 4));
skb_cb = ATH11K_SKB_CB(skb);
memset(skb_cb, 0, sizeof(*skb_cb));
return skb;
}
static void ath11k_htc_prepare_tx_skb(struct ath11k_htc_ep *ep,
struct sk_buff *skb)
{
struct ath11k_htc_hdr *hdr;
hdr = (struct ath11k_htc_hdr *)skb->data;
memset(hdr, 0, sizeof(*hdr));
hdr->htc_info = FIELD_PREP(HTC_HDR_ENDPOINTID, ep->eid) |
FIELD_PREP(HTC_HDR_PAYLOADLEN,
(skb->len - sizeof(*hdr)));
if (ep->tx_credit_flow_enabled)
hdr->htc_info |= FIELD_PREP(HTC_HDR_FLAGS,
ATH11K_HTC_FLAG_NEED_CREDIT_UPDATE);
spin_lock_bh(&ep->htc->tx_lock);
hdr->ctrl_info = FIELD_PREP(HTC_HDR_CONTROLBYTES1, ep->seq_no++);
spin_unlock_bh(&ep->htc->tx_lock);
}
int ath11k_htc_send(struct ath11k_htc *htc,
enum ath11k_htc_ep_id eid,
struct sk_buff *skb)
{
struct ath11k_htc_ep *ep = &htc->endpoint[eid];
struct ath11k_skb_cb *skb_cb = ATH11K_SKB_CB(skb);
struct device *dev = htc->ab->dev;
struct ath11k_base *ab = htc->ab;
int credits = 0;
int ret;
bool credit_flow_enabled = (ab->hw_params.credit_flow &&
ep->tx_credit_flow_enabled);
if (eid >= ATH11K_HTC_EP_COUNT) {
ath11k_warn(ab, "Invalid endpoint id: %d\n", eid);
return -ENOENT;
}
skb_push(skb, sizeof(struct ath11k_htc_hdr));
if (credit_flow_enabled) {
credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);
spin_lock_bh(&htc->tx_lock);
if (ep->tx_credits < credits) {
ath11k_dbg(ab, ATH11K_DBG_HTC,
"ep %d insufficient credits required %d total %d\n",
eid, credits, ep->tx_credits);
spin_unlock_bh(&htc->tx_lock);
ret = -EAGAIN;
goto err_pull;
}
ep->tx_credits -= credits;
ath11k_dbg(ab, ATH11K_DBG_HTC,
"ep %d credits consumed %d total %d\n",
eid, credits, ep->tx_credits);
spin_unlock_bh(&htc->tx_lock);
}
ath11k_htc_prepare_tx_skb(ep, skb);
skb_cb->eid = eid;
skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE);
ret = dma_mapping_error(dev, skb_cb->paddr);
if (ret) {
ret = -EIO;
goto err_credits;
}
ath11k_dbg(ab, ATH11K_DBG_HTC, "tx skb %p eid %d paddr %pad\n",
skb, skb_cb->eid, &skb_cb->paddr);
ret = ath11k_ce_send(htc->ab, skb, ep->ul_pipe_id, ep->eid);
if (ret)
goto err_unmap;
return 0;
err_unmap:
dma_unmap_single(dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE);
err_credits:
if (credit_flow_enabled) {
spin_lock_bh(&htc->tx_lock);
ep->tx_credits += credits;
ath11k_dbg(ab, ATH11K_DBG_HTC,
"ep %d credits reverted %d total %d\n",
eid, credits, ep->tx_credits);
spin_unlock_bh(&htc->tx_lock);
if (ep->ep_ops.ep_tx_credits)
ep->ep_ops.ep_tx_credits(htc->ab);
}
err_pull:
skb_pull(skb, sizeof(struct ath11k_htc_hdr));
return ret;
}
static void
ath11k_htc_process_credit_report(struct ath11k_htc *htc,
const struct ath11k_htc_credit_report *report,
int len,
enum ath11k_htc_ep_id eid)
{
struct ath11k_base *ab = htc->ab;
struct ath11k_htc_ep *ep;
int i, n_reports;
if (len % sizeof(*report))
ath11k_warn(ab, "Uneven credit report len %d", len);
n_reports = len / sizeof(*report);
spin_lock_bh(&htc->tx_lock);
for (i = 0; i < n_reports; i++, report++) {
if (report->eid >= ATH11K_HTC_EP_COUNT)
break;
ep = &htc->endpoint[report->eid];
ep->tx_credits += report->credits;
ath11k_dbg(ab, ATH11K_DBG_HTC, "ep %d credits got %d total %d\n",
report->eid, report->credits, ep->tx_credits);
if (ep->ep_ops.ep_tx_credits) {
spin_unlock_bh(&htc->tx_lock);
ep->ep_ops.ep_tx_credits(htc->ab);
spin_lock_bh(&htc->tx_lock);
}
}
spin_unlock_bh(&htc->tx_lock);
}
static int ath11k_htc_process_trailer(struct ath11k_htc *htc,
u8 *buffer,
int length,
enum ath11k_htc_ep_id src_eid)
{
struct ath11k_base *ab = htc->ab;
int status = 0;
struct ath11k_htc_record *record;
size_t len;
while (length > 0) {
record = (struct ath11k_htc_record *)buffer;
if (length < sizeof(record->hdr)) {
status = -EINVAL;
break;
}
if (record->hdr.len > length) {
ath11k_warn(ab, "Invalid record length: %d\n",
record->hdr.len);
status = -EINVAL;
break;
}
if (ab->hw_params.credit_flow) {
switch (record->hdr.id) {
case ATH11K_HTC_RECORD_CREDITS:
len = sizeof(struct ath11k_htc_credit_report);
if (record->hdr.len < len) {
ath11k_warn(ab, "Credit report too long\n");
status = -EINVAL;
break;
}
ath11k_htc_process_credit_report(htc,
record->credit_report,
record->hdr.len,
src_eid);
break;
default:
ath11k_warn(ab, "Unhandled record: id:%d length:%d\n",
record->hdr.id, record->hdr.len);
break;
}
}
if (status)
break;
buffer += sizeof(record->hdr) + record->hdr.len;
length -= sizeof(record->hdr) + record->hdr.len;
}
return status;
}
static void ath11k_htc_suspend_complete(struct ath11k_base *ab, bool ack)
{
ath11k_dbg(ab, ATH11K_DBG_BOOT, "suspend complete %d\n", ack);
if (ack)
set_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags);
else
clear_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags);
complete(&ab->htc_suspend);
}
void ath11k_htc_tx_completion_handler(struct ath11k_base *ab,
struct sk_buff *skb)
{
struct ath11k_htc *htc = &ab->htc;
struct ath11k_htc_ep *ep;
void (*ep_tx_complete)(struct ath11k_base *, struct sk_buff *);
u8 eid;
eid = ATH11K_SKB_CB(skb)->eid;
if (eid >= ATH11K_HTC_EP_COUNT) {
dev_kfree_skb_any(skb);
return;
}
ep = &htc->endpoint[eid];
spin_lock_bh(&htc->tx_lock);
ep_tx_complete = ep->ep_ops.ep_tx_complete;
spin_unlock_bh(&htc->tx_lock);
if (!ep_tx_complete) {
dev_kfree_skb_any(skb);
return;
}
ep_tx_complete(htc->ab, skb);
}
static void ath11k_htc_wakeup_from_suspend(struct ath11k_base *ab)
{
ath11k_dbg(ab, ATH11K_DBG_BOOT, "wakeup from suspend is received\n");
}
void ath11k_htc_rx_completion_handler(struct ath11k_base *ab,
struct sk_buff *skb)
{
int status = 0;
struct ath11k_htc *htc = &ab->htc;
struct ath11k_htc_hdr *hdr;
struct ath11k_htc_ep *ep;
u16 payload_len;
u32 message_id, trailer_len = 0;
size_t min_len;
u8 eid;
bool trailer_present;
hdr = (struct ath11k_htc_hdr *)skb->data;
skb_pull(skb, sizeof(*hdr));
eid = FIELD_GET(HTC_HDR_ENDPOINTID, hdr->htc_info);
if (eid >= ATH11K_HTC_EP_COUNT) {
ath11k_warn(ab, "HTC Rx: invalid eid %d\n", eid);
goto out;
}
ep = &htc->endpoint[eid];
payload_len = FIELD_GET(HTC_HDR_PAYLOADLEN, hdr->htc_info);
if (payload_len + sizeof(*hdr) > ATH11K_HTC_MAX_LEN) {
ath11k_warn(ab, "HTC rx frame too long, len: %zu\n",
payload_len + sizeof(*hdr));
goto out;
}
if (skb->len < payload_len) {
ath11k_warn(ab, "HTC Rx: insufficient length, got %d, expected %d\n",
skb->len, payload_len);
goto out;
}
trailer_present = (FIELD_GET(HTC_HDR_FLAGS, hdr->htc_info)) &
ATH11K_HTC_FLAG_TRAILER_PRESENT;
ath11k_dbg(ab, ATH11K_DBG_HTC, "rx ep %d skb %p trailer_present %d\n",
eid, skb, trailer_present);
if (trailer_present) {
u8 *trailer;
trailer_len = FIELD_GET(HTC_HDR_CONTROLBYTES0, hdr->ctrl_info);
min_len = sizeof(struct ath11k_htc_record_hdr);
if ((trailer_len < min_len) ||
(trailer_len > payload_len)) {
ath11k_warn(ab, "Invalid trailer length: %d\n",
trailer_len);
goto out;
}
trailer = (u8 *)hdr;
trailer += sizeof(*hdr);
trailer += payload_len;
trailer -= trailer_len;
status = ath11k_htc_process_trailer(htc, trailer,
trailer_len, eid);
if (status)
goto out;
skb_trim(skb, skb->len - trailer_len);
}
if (trailer_len >= payload_len)
goto out;
if (eid == ATH11K_HTC_EP_0) {
struct ath11k_htc_msg *msg = (struct ath11k_htc_msg *)skb->data;
message_id = FIELD_GET(HTC_MSG_MESSAGEID, msg->msg_svc_id);
ath11k_dbg(ab, ATH11K_DBG_HTC, "rx ep %d skb %p message_id %d\n",
eid, skb, message_id);
switch (message_id) {
case ATH11K_HTC_MSG_READY_ID:
case ATH11K_HTC_MSG_CONNECT_SERVICE_RESP_ID:
if (completion_done(&htc->ctl_resp)) {
ath11k_warn(ab, "HTC rx ctrl still processing\n");
complete(&htc->ctl_resp);
goto out;
}
htc->control_resp_len =
min_t(int, skb->len,
ATH11K_HTC_MAX_CTRL_MSG_LEN);
memcpy(htc->control_resp_buffer, skb->data,
htc->control_resp_len);
complete(&htc->ctl_resp);
break;
case ATH11K_HTC_MSG_SEND_SUSPEND_COMPLETE:
ath11k_htc_suspend_complete(ab, true);
break;
case ATH11K_HTC_MSG_NACK_SUSPEND:
ath11k_htc_suspend_complete(ab, false);
break;
case ATH11K_HTC_MSG_WAKEUP_FROM_SUSPEND_ID:
ath11k_htc_wakeup_from_suspend(ab);
break;
default:
ath11k_warn(ab, "ignoring unsolicited htc ep0 event %ld\n",
FIELD_GET(HTC_MSG_MESSAGEID, msg->msg_svc_id));
break;
}
goto out;
}
ep->ep_ops.ep_rx_complete(ab, skb);
ath11k_ce_poll_send_completed(ab, ep->ul_pipe_id);
skb = NULL;
out:
kfree_skb(skb);
}
static void ath11k_htc_control_rx_complete(struct ath11k_base *ab,
struct sk_buff *skb)
{
ath11k_warn(ab, "unexpected htc rx\n");
kfree_skb(skb);
}
static const char *htc_service_name(enum ath11k_htc_svc_id id)
{
switch (id) {
case ATH11K_HTC_SVC_ID_RESERVED:
return "Reserved";
case ATH11K_HTC_SVC_ID_RSVD_CTRL:
return "Control";
case ATH11K_HTC_SVC_ID_WMI_CONTROL:
return "WMI";
case ATH11K_HTC_SVC_ID_WMI_DATA_BE:
return "DATA BE";
case ATH11K_HTC_SVC_ID_WMI_DATA_BK:
return "DATA BK";
case ATH11K_HTC_SVC_ID_WMI_DATA_VI:
return "DATA VI";
case ATH11K_HTC_SVC_ID_WMI_DATA_VO:
return "DATA VO";
case ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC1:
return "WMI MAC1";
case ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC2:
return "WMI MAC2";
case ATH11K_HTC_SVC_ID_NMI_CONTROL:
return "NMI Control";
case ATH11K_HTC_SVC_ID_NMI_DATA:
return "NMI Data";
case ATH11K_HTC_SVC_ID_HTT_DATA_MSG:
return "HTT Data";
case ATH11K_HTC_SVC_ID_TEST_RAW_STREAMS:
return "RAW";
case ATH11K_HTC_SVC_ID_IPA_TX:
return "IPA TX";
case ATH11K_HTC_SVC_ID_PKT_LOG:
return "PKT LOG";
}
return "Unknown";
}
static void ath11k_htc_reset_endpoint_states(struct ath11k_htc *htc)
{
struct ath11k_htc_ep *ep;
int i;
for (i = ATH11K_HTC_EP_0; i < ATH11K_HTC_EP_COUNT; i++) {
ep = &htc->endpoint[i];
ep->service_id = ATH11K_HTC_SVC_ID_UNUSED;
ep->max_ep_message_len = 0;
ep->max_tx_queue_depth = 0;
ep->eid = i;
ep->htc = htc;
ep->tx_credit_flow_enabled = true;
}
}
static u8 ath11k_htc_get_credit_allocation(struct ath11k_htc *htc,
u16 service_id)
{
u8 i, allocation = 0;
for (i = 0; i < ATH11K_HTC_MAX_SERVICE_ALLOC_ENTRIES; i++) {
if (htc->service_alloc_table[i].service_id == service_id) {
allocation =
htc->service_alloc_table[i].credit_allocation;
}
}
return allocation;
}
static int ath11k_htc_setup_target_buffer_assignments(struct ath11k_htc *htc)
{
struct ath11k_htc_svc_tx_credits *serv_entry;
static const u32 svc_id[] = {
ATH11K_HTC_SVC_ID_WMI_CONTROL,
ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC1,
ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC2,
};
int i, credits;
credits = htc->total_transmit_credits;
serv_entry = htc->service_alloc_table;
if ((htc->wmi_ep_count == 0) ||
(htc->wmi_ep_count > ARRAY_SIZE(svc_id)))
return -EINVAL;
credits = credits / htc->wmi_ep_count;
for (i = 0; i < htc->wmi_ep_count; i++) {
serv_entry[i].service_id = svc_id[i];
serv_entry[i].credit_allocation = credits;
}
return 0;
}
int ath11k_htc_wait_target(struct ath11k_htc *htc)
{
int i, status = 0;
struct ath11k_base *ab = htc->ab;
unsigned long time_left;
struct ath11k_htc_ready *ready;
u16 message_id;
u16 credit_count;
u16 credit_size;
time_left = wait_for_completion_timeout(&htc->ctl_resp,
ATH11K_HTC_WAIT_TIMEOUT_HZ);
if (!time_left) {
ath11k_warn(ab, "failed to receive control response completion, polling..\n");
for (i = 0; i < ab->hw_params.ce_count; i++)
ath11k_ce_per_engine_service(htc->ab, i);
time_left =
wait_for_completion_timeout(&htc->ctl_resp,
ATH11K_HTC_WAIT_TIMEOUT_HZ);
if (!time_left)
status = -ETIMEDOUT;
}
if (status < 0) {
ath11k_warn(ab, "ctl_resp never came in (%d)\n", status);
return status;
}
if (htc->control_resp_len < sizeof(*ready)) {
ath11k_warn(ab, "Invalid HTC ready msg len:%d\n",
htc->control_resp_len);
return -ECOMM;
}
ready = (struct ath11k_htc_ready *)htc->control_resp_buffer;
message_id = FIELD_GET(HTC_MSG_MESSAGEID, ready->id_credit_count);
credit_count = FIELD_GET(HTC_READY_MSG_CREDITCOUNT,
ready->id_credit_count);
credit_size = FIELD_GET(HTC_READY_MSG_CREDITSIZE, ready->size_ep);
if (message_id != ATH11K_HTC_MSG_READY_ID) {
ath11k_warn(ab, "Invalid HTC ready msg: 0x%x\n", message_id);
return -ECOMM;
}
htc->total_transmit_credits = credit_count;
htc->target_credit_size = credit_size;
ath11k_dbg(ab, ATH11K_DBG_HTC,
"target ready total_transmit_credits %d target_credit_size %d\n",
htc->total_transmit_credits, htc->target_credit_size);
if ((htc->total_transmit_credits == 0) ||
(htc->target_credit_size == 0)) {
ath11k_warn(ab, "Invalid credit size received\n");
return -ECOMM;
}
if (ab->hw_params.supports_shadow_regs)
htc->total_transmit_credits = 1;
ath11k_htc_setup_target_buffer_assignments(htc);
return 0;
}
int ath11k_htc_connect_service(struct ath11k_htc *htc,
struct ath11k_htc_svc_conn_req *conn_req,
struct ath11k_htc_svc_conn_resp *conn_resp)
{
struct ath11k_base *ab = htc->ab;
struct ath11k_htc_conn_svc *req_msg;
struct ath11k_htc_conn_svc_resp resp_msg_dummy;
struct ath11k_htc_conn_svc_resp *resp_msg = &resp_msg_dummy;
enum ath11k_htc_ep_id assigned_eid = ATH11K_HTC_EP_COUNT;
struct ath11k_htc_ep *ep;
struct sk_buff *skb;
unsigned int max_msg_size = 0;
int length, status;
unsigned long time_left;
bool disable_credit_flow_ctrl = false;
u16 message_id, service_id, flags = 0;
u8 tx_alloc = 0;
if (conn_req->service_id == ATH11K_HTC_SVC_ID_RSVD_CTRL) {
disable_credit_flow_ctrl = true;
assigned_eid = ATH11K_HTC_EP_0;
max_msg_size = ATH11K_HTC_MAX_CTRL_MSG_LEN;
memset(&resp_msg_dummy, 0, sizeof(resp_msg_dummy));
goto setup;
}
tx_alloc = ath11k_htc_get_credit_allocation(htc,
conn_req->service_id);
if (!tx_alloc)
ath11k_dbg(ab, ATH11K_DBG_BOOT,
"htc service %s does not allocate target credits\n",
htc_service_name(conn_req->service_id));
skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);
if (!skb) {
ath11k_warn(ab, "Failed to allocate HTC packet\n");
return -ENOMEM;
}
length = sizeof(*req_msg);
skb_put(skb, length);
memset(skb->data, 0, length);
req_msg = (struct ath11k_htc_conn_svc *)skb->data;
req_msg->msg_svc_id = FIELD_PREP(HTC_MSG_MESSAGEID,
ATH11K_HTC_MSG_CONNECT_SERVICE_ID);
flags |= FIELD_PREP(ATH11K_HTC_CONN_FLAGS_RECV_ALLOC, tx_alloc);
if (!(conn_req->service_id == ATH11K_HTC_SVC_ID_WMI_CONTROL ||
conn_req->service_id == ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC1 ||
conn_req->service_id == ATH11K_HTC_SVC_ID_WMI_CONTROL_MAC2)) {
flags |= ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL;
disable_credit_flow_ctrl = true;
}
if (!ab->hw_params.credit_flow) {
flags |= ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL;
disable_credit_flow_ctrl = true;
}
req_msg->flags_len = FIELD_PREP(HTC_SVC_MSG_CONNECTIONFLAGS, flags);
req_msg->msg_svc_id |= FIELD_PREP(HTC_SVC_MSG_SERVICE_ID,
conn_req->service_id);
reinit_completion(&htc->ctl_resp);
status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);
if (status) {
kfree_skb(skb);
return status;
}
time_left = wait_for_completion_timeout(&htc->ctl_resp,
ATH11K_HTC_CONN_SVC_TIMEOUT_HZ);
if (!time_left) {
ath11k_err(ab, "Service connect timeout\n");
return -ETIMEDOUT;
}
resp_msg = (struct ath11k_htc_conn_svc_resp *)htc->control_resp_buffer;
message_id = FIELD_GET(HTC_MSG_MESSAGEID, resp_msg->msg_svc_id);
service_id = FIELD_GET(HTC_SVC_RESP_MSG_SERVICEID,
resp_msg->msg_svc_id);
if ((message_id != ATH11K_HTC_MSG_CONNECT_SERVICE_RESP_ID) ||
(htc->control_resp_len < sizeof(*resp_msg))) {
ath11k_err(ab, "Invalid resp message ID 0x%x", message_id);
return -EPROTO;
}
ath11k_dbg(ab, ATH11K_DBG_HTC,
"service %s connect response status 0x%lx assigned ep 0x%lx\n",
htc_service_name(service_id),
FIELD_GET(HTC_SVC_RESP_MSG_STATUS, resp_msg->flags_len),
FIELD_GET(HTC_SVC_RESP_MSG_ENDPOINTID, resp_msg->flags_len));
conn_resp->connect_resp_code = FIELD_GET(HTC_SVC_RESP_MSG_STATUS,
resp_msg->flags_len);
if (conn_resp->connect_resp_code != ATH11K_HTC_CONN_SVC_STATUS_SUCCESS) {
ath11k_err(ab, "HTC Service %s connect request failed: 0x%x)\n",
htc_service_name(service_id),
conn_resp->connect_resp_code);
return -EPROTO;
}
assigned_eid = (enum ath11k_htc_ep_id)FIELD_GET(
HTC_SVC_RESP_MSG_ENDPOINTID,
resp_msg->flags_len);
max_msg_size = FIELD_GET(HTC_SVC_RESP_MSG_MAXMSGSIZE,
resp_msg->flags_len);
setup:
if (assigned_eid >= ATH11K_HTC_EP_COUNT)
return -EPROTO;
if (max_msg_size == 0)
return -EPROTO;
ep = &htc->endpoint[assigned_eid];
ep->eid = assigned_eid;
if (ep->service_id != ATH11K_HTC_SVC_ID_UNUSED)
return -EPROTO;
conn_resp->eid = assigned_eid;
conn_resp->max_msg_len = FIELD_GET(HTC_SVC_RESP_MSG_MAXMSGSIZE,
resp_msg->flags_len);
ep->service_id = conn_req->service_id;
ep->max_tx_queue_depth = conn_req->max_send_queue_depth;
ep->max_ep_message_len = FIELD_GET(HTC_SVC_RESP_MSG_MAXMSGSIZE,
resp_msg->flags_len);
ep->tx_credits = tx_alloc;
ep->ep_ops = conn_req->ep_ops;
status = ath11k_hif_map_service_to_pipe(htc->ab,
ep->service_id,
&ep->ul_pipe_id,
&ep->dl_pipe_id);
if (status)
return status;
ath11k_dbg(ab, ATH11K_DBG_BOOT,
"htc service '%s' ul pipe %d dl pipe %d eid %d ready\n",
htc_service_name(ep->service_id), ep->ul_pipe_id,
ep->dl_pipe_id, ep->eid);
if (disable_credit_flow_ctrl && ep->tx_credit_flow_enabled) {
ep->tx_credit_flow_enabled = false;
ath11k_dbg(ab, ATH11K_DBG_BOOT,
"htc service '%s' eid %d tx flow control disabled\n",
htc_service_name(ep->service_id), assigned_eid);
}
return status;
}
int ath11k_htc_start(struct ath11k_htc *htc)
{
struct sk_buff *skb;
int status = 0;
struct ath11k_base *ab = htc->ab;
struct ath11k_htc_setup_complete_extended *msg;
skb = ath11k_htc_build_tx_ctrl_skb(htc->ab);
if (!skb)
return -ENOMEM;
skb_put(skb, sizeof(*msg));
memset(skb->data, 0, skb->len);
msg = (struct ath11k_htc_setup_complete_extended *)skb->data;
msg->msg_id = FIELD_PREP(HTC_MSG_MESSAGEID,
ATH11K_HTC_MSG_SETUP_COMPLETE_EX_ID);
if (ab->hw_params.credit_flow)
ath11k_dbg(ab, ATH11K_DBG_HTC, "using tx credit flow control\n");
else
msg->flags |= ATH11K_GLOBAL_DISABLE_CREDIT_FLOW;
status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);
if (status) {
kfree_skb(skb);
return status;
}
return 0;
}
int ath11k_htc_init(struct ath11k_base *ab)
{
struct ath11k_htc *htc = &ab->htc;
struct ath11k_htc_svc_conn_req conn_req;
struct ath11k_htc_svc_conn_resp conn_resp;
int ret;
spin_lock_init(&htc->tx_lock);
ath11k_htc_reset_endpoint_states(htc);
htc->ab = ab;
switch (ab->wmi_ab.preferred_hw_mode) {
case WMI_HOST_HW_MODE_SINGLE:
htc->wmi_ep_count = 1;
break;
case WMI_HOST_HW_MODE_DBS:
case WMI_HOST_HW_MODE_DBS_OR_SBS:
htc->wmi_ep_count = 2;
break;
case WMI_HOST_HW_MODE_DBS_SBS:
htc->wmi_ep_count = 3;
break;
default:
htc->wmi_ep_count = ab->hw_params.max_radios;
break;
}
memset(&conn_req, 0, sizeof(conn_req));
memset(&conn_resp, 0, sizeof(conn_resp));
conn_req.ep_ops.ep_tx_complete = ath11k_htc_control_tx_complete;
conn_req.ep_ops.ep_rx_complete = ath11k_htc_control_rx_complete;
conn_req.max_send_queue_depth = ATH11K_NUM_CONTROL_TX_BUFFERS;
conn_req.service_id = ATH11K_HTC_SVC_ID_RSVD_CTRL;
ret = ath11k_htc_connect_service(htc, &conn_req, &conn_resp);
if (ret) {
ath11k_err(ab, "could not connect to htc service (%d)\n", ret);
return ret;
}
init_completion(&htc->ctl_resp);
return 0;
}
