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net: ethernet: mtk_wed: add reset/reset_complete callbacks

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Introduce reset and reset_complete wlan callback to schedule WLAN driver
reset when ethernet/wed driver is resetting.

Tested-by: Daniel Golle <daniel@makrotopia.org>
Co-developed-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Lorenzo Bianconi 2023-01-14 18:01:32 +01:00 committed by Paolo Abeni
parent 93b2591ad0
commit 08a764a7c5
4 changed files with 60 additions and 0 deletions
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7
drivers/net/ethernet/mediatek/mtk_eth_soc.c
View File

@ -3970,6 +3970,11 @@ static void mtk_pending_work(struct work_struct *work)
set_bit(MTK_RESETTING, &eth->state);
mtk_prepare_for_reset(eth);
mtk_wed_fe_reset();
/* Run again reset preliminary configuration in order to avoid any
* possible race during FE reset since it can run releasing RTNL lock.
*/
mtk_prepare_for_reset(eth);
/* stop all devices to make sure that dma is properly shut down */
for (i = 0; i < MTK_MAC_COUNT; i++) {
@ -4007,6 +4012,8 @@ static void mtk_pending_work(struct work_struct *work)
clear_bit(MTK_RESETTING, &eth->state);
mtk_wed_fe_reset_complete();
rtnl_unlock();
}

42
drivers/net/ethernet/mediatek/mtk_wed.c
View File

@ -206,6 +206,48 @@ mtk_wed_wo_reset(struct mtk_wed_device *dev)
iounmap(reg);
}
void mtk_wed_fe_reset(void)
{
int i;
mutex_lock(&hw_lock);
for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
struct mtk_wed_hw *hw = hw_list[i];
struct mtk_wed_device *dev = hw->wed_dev;
int err;
if (!dev || !dev->wlan.reset)
continue;
/* reset callback blocks until WLAN reset is completed */
err = dev->wlan.reset(dev);
if (err)
dev_err(dev->dev, "wlan reset failed: %d\n", err);
}
mutex_unlock(&hw_lock);
}
void mtk_wed_fe_reset_complete(void)
{
int i;
mutex_lock(&hw_lock);
for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
struct mtk_wed_hw *hw = hw_list[i];
struct mtk_wed_device *dev = hw->wed_dev;
if (!dev || !dev->wlan.reset_complete)
continue;
dev->wlan.reset_complete(dev);
}
mutex_unlock(&hw_lock);
}
static struct mtk_wed_hw *
mtk_wed_assign(struct mtk_wed_device *dev)
{

9
drivers/net/ethernet/mediatek/mtk_wed.h
View File

@ -128,6 +128,8 @@ void mtk_wed_add_hw(struct device_node *np, struct mtk_eth *eth,
void mtk_wed_exit(void);
int mtk_wed_flow_add(int index);
void mtk_wed_flow_remove(int index);
void mtk_wed_fe_reset(void);
void mtk_wed_fe_reset_complete(void);
#else
static inline void
mtk_wed_add_hw(struct device_node *np, struct mtk_eth *eth,
@ -147,6 +149,13 @@ static inline void mtk_wed_flow_remove(int index)
{
}
static inline void mtk_wed_fe_reset(void)
{
}
static inline void mtk_wed_fe_reset_complete(void)
{
}
#endif
#ifdef CONFIG_DEBUG_FS

2
include/linux/soc/mediatek/mtk_wed.h
View File

@ -151,6 +151,8 @@ struct mtk_wed_device {
void (*release_rx_buf)(struct mtk_wed_device *wed);
void (*update_wo_rx_stats)(struct mtk_wed_device *wed,
struct mtk_wed_wo_rx_stats *stats);
int (*reset)(struct mtk_wed_device *wed);
void (*reset_complete)(struct mtk_wed_device *wed);
} wlan;
#endif
};