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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MAC802154_DRIVER_OPS
#define __MAC802154_DRIVER_OPS
#include <linux/types.h>
#include <linux/rtnetlink.h>
#include <net/mac802154.h>
#include "ieee802154_i.h"
#include "trace.h"
static inline int
drv_xmit_async(struct ieee802154_local *local, struct sk_buff *skb)
{
return local->ops->xmit_async(&local->hw, skb);
}
static inline int
drv_xmit_sync(struct ieee802154_local *local, struct sk_buff *skb)
{
might_sleep();
return local->ops->xmit_sync(&local->hw, skb);
}
static inline int drv_set_pan_id(struct ieee802154_local *local, __le16 pan_id)
{
struct ieee802154_hw_addr_filt filt;
int ret;
might_sleep();
if (!local->ops->set_hw_addr_filt) {
WARN_ON(1);
return -EOPNOTSUPP;
}
filt.pan_id = pan_id;
trace_802154_drv_set_pan_id(local, pan_id);
ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
IEEE802154_AFILT_PANID_CHANGED);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int
drv_set_extended_addr(struct ieee802154_local *local, __le64 extended_addr)
{
struct ieee802154_hw_addr_filt filt;
int ret;
might_sleep();
if (!local->ops->set_hw_addr_filt) {
WARN_ON(1);
return -EOPNOTSUPP;
}
filt.ieee_addr = extended_addr;
trace_802154_drv_set_extended_addr(local, extended_addr);
ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
IEEE802154_AFILT_IEEEADDR_CHANGED);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int
drv_set_short_addr(struct ieee802154_local *local, __le16 short_addr)
{
struct ieee802154_hw_addr_filt filt;
int ret;
might_sleep();
if (!local->ops->set_hw_addr_filt) {
WARN_ON(1);
return -EOPNOTSUPP;
}
filt.short_addr = short_addr;
trace_802154_drv_set_short_addr(local, short_addr);
ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
IEEE802154_AFILT_SADDR_CHANGED);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int
drv_set_pan_coord(struct ieee802154_local *local, bool is_coord)
{
struct ieee802154_hw_addr_filt filt;
int ret;
might_sleep();
if (!local->ops->set_hw_addr_filt) {
WARN_ON(1);
return -EOPNOTSUPP;
}
filt.pan_coord = is_coord;
trace_802154_drv_set_pan_coord(local, is_coord);
ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
IEEE802154_AFILT_PANC_CHANGED);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int
drv_set_promiscuous_mode(struct ieee802154_local *local, bool on)
{
int ret;
might_sleep();
if (!local->ops->set_promiscuous_mode) {
WARN_ON(1);
return -EOPNOTSUPP;
}
trace_802154_drv_set_promiscuous_mode(local, on);
ret = local->ops->set_promiscuous_mode(&local->hw, on);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int drv_start(struct ieee802154_local *local,
enum ieee802154_filtering_level level,
const struct ieee802154_hw_addr_filt *addr_filt)
{
int ret;
might_sleep();
/* setup receive mode parameters e.g. address mode */
if (local->hw.flags & IEEE802154_HW_AFILT) {
ret = drv_set_pan_id(local, addr_filt->pan_id);
if (ret < 0)
return ret;
ret = drv_set_short_addr(local, addr_filt->short_addr);
if (ret < 0)
return ret;
ret = drv_set_extended_addr(local, addr_filt->ieee_addr);
if (ret < 0)
return ret;
}
switch (level) {
case IEEE802154_FILTERING_NONE:
fallthrough;
case IEEE802154_FILTERING_1_FCS:
fallthrough;
case IEEE802154_FILTERING_2_PROMISCUOUS:
/* TODO: Requires a different receive mode setup e.g.
* at86rf233 hardware.
*/
fallthrough;
case IEEE802154_FILTERING_3_SCAN:
if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
ret = drv_set_promiscuous_mode(local, true);
if (ret < 0)
return ret;
} else {
return -EOPNOTSUPP;
}
/* In practice other filtering levels can be requested, but as
* for now most hardware/drivers only support
* IEEE802154_FILTERING_NONE, we fallback to this actual
* filtering level in hardware and make our own additional
* filtering in mac802154 receive path.
*
* TODO: Move this logic to the device drivers as hardware may
* support more higher level filters. Hardware may also require
* a different order how register are set, which could currently
* be buggy, so all received parameters need to be moved to the
* start() callback and let the driver go into the mode before
* it will turn on receive handling.
*/
local->phy->filtering = IEEE802154_FILTERING_NONE;
break;
case IEEE802154_FILTERING_4_FRAME_FIELDS:
/* Do not error out if IEEE802154_HW_PROMISCUOUS because we
* expect the hardware to operate at the level
* IEEE802154_FILTERING_4_FRAME_FIELDS anyway.
*/
if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
ret = drv_set_promiscuous_mode(local, false);
if (ret < 0)
return ret;
}
local->phy->filtering = IEEE802154_FILTERING_4_FRAME_FIELDS;
break;
default:
WARN_ON(1);
return -EINVAL;
}
trace_802154_drv_start(local);
local->started = true;
smp_mb();
ret = local->ops->start(&local->hw);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline void drv_stop(struct ieee802154_local *local)
{
might_sleep();
trace_802154_drv_stop(local);
local->ops->stop(&local->hw);
trace_802154_drv_return_void(local);
/* sync away all work on the tasklet before clearing started */
tasklet_disable(&local->tasklet);
tasklet_enable(&local->tasklet);
barrier();
local->started = false;
}
static inline int
drv_set_channel(struct ieee802154_local *local, u8 page, u8 channel)
{
int ret;
might_sleep();
trace_802154_drv_set_channel(local, page, channel);
ret = local->ops->set_channel(&local->hw, page, channel);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int drv_set_tx_power(struct ieee802154_local *local, s32 mbm)
{
int ret;
might_sleep();
if (!local->ops->set_txpower) {
WARN_ON(1);
return -EOPNOTSUPP;
}
trace_802154_drv_set_tx_power(local, mbm);
ret = local->ops->set_txpower(&local->hw, mbm);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int drv_set_cca_mode(struct ieee802154_local *local,
const struct wpan_phy_cca *cca)
{
int ret;
might_sleep();
if (!local->ops->set_cca_mode) {
WARN_ON(1);
return -EOPNOTSUPP;
}
trace_802154_drv_set_cca_mode(local, cca);
ret = local->ops->set_cca_mode(&local->hw, cca);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int drv_set_lbt_mode(struct ieee802154_local *local, bool mode)
{
int ret;
might_sleep();
if (!local->ops->set_lbt) {
WARN_ON(1);
return -EOPNOTSUPP;
}
trace_802154_drv_set_lbt_mode(local, mode);
ret = local->ops->set_lbt(&local->hw, mode);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int
drv_set_cca_ed_level(struct ieee802154_local *local, s32 mbm)
{
int ret;
might_sleep();
if (!local->ops->set_cca_ed_level) {
WARN_ON(1);
return -EOPNOTSUPP;
}
trace_802154_drv_set_cca_ed_level(local, mbm);
ret = local->ops->set_cca_ed_level(&local->hw, mbm);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int
drv_set_csma_params(struct ieee802154_local *local, u8 min_be, u8 max_be,
u8 max_csma_backoffs)
{
int ret;
might_sleep();
if (!local->ops->set_csma_params) {
WARN_ON(1);
return -EOPNOTSUPP;
}
trace_802154_drv_set_csma_params(local, min_be, max_be,
max_csma_backoffs);
ret = local->ops->set_csma_params(&local->hw, min_be, max_be,
max_csma_backoffs);
trace_802154_drv_return_int(local, ret);
return ret;
}
static inline int
drv_set_max_frame_retries(struct ieee802154_local *local, s8 max_frame_retries)
{
int ret;
might_sleep();
if (!local->ops->set_frame_retries) {
WARN_ON(1);
return -EOPNOTSUPP;
}
trace_802154_drv_set_max_frame_retries(local, max_frame_retries);
ret = local->ops->set_frame_retries(&local->hw, max_frame_retries);
trace_802154_drv_return_int(local, ret);
return ret;
}
#endif /* __MAC802154_DRIVER_OPS */
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