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net: stmmac: add support for platform specific reset

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This patch adds support for platform-specific reset logic in the
stmmac driver. Some SoCs require a different reset mechanism than
the standard dwmac IP reset. To support these platforms, a new function
pointer 'fix_soc_reset' is added to the plat_stmmacenet_data structure.
The stmmac_reset in hwif.h is modified to call the 'fix_soc_reset'
function if it exists. This enables the driver to use the platform-specific
reset logic when necessary.

Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230403222302.328262-1-shenwei.wang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Shenwei Wang 2023-04-03 17:23:01 -05:00 committed by Jakub Kicinski
parent 8b0f256530
commit 10739ea313
3 changed files with 15 additions and 2 deletions
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13
drivers/net/ethernet/stmicro/stmmac/hwif.c
View file

@ -87,6 +87,19 @@ static int stmmac_dwxlgmac_quirks(struct stmmac_priv *priv)
return 0;
}
int stmmac_reset(struct stmmac_priv *priv, void __iomem *ioaddr)
{
struct plat_stmmacenet_data *plat = priv ? priv->plat : NULL;
if (!priv)
return -EINVAL;
if (plat && plat->fix_soc_reset)
return plat->fix_soc_reset(plat, ioaddr);
return stmmac_do_callback(priv, dma, reset, ioaddr);
}
static const struct stmmac_hwif_entry {
bool gmac;
bool gmac4;

3
drivers/net/ethernet/stmicro/stmmac/hwif.h
View file

@ -214,8 +214,6 @@ struct stmmac_dma_ops {
int (*enable_tbs)(void __iomem *ioaddr, bool en, u32 chan);
};
#define stmmac_reset(__priv, __args...) \
stmmac_do_callback(__priv, dma, reset, __args)
#define stmmac_dma_init(__priv, __args...) \
stmmac_do_void_callback(__priv, dma, init, __args)
#define stmmac_init_chan(__priv, __args...) \
@ -640,6 +638,7 @@ extern const struct stmmac_mmc_ops dwxgmac_mmc_ops;
#define GMAC_VERSION 0x00000020 /* GMAC CORE Version */
#define GMAC4_VERSION 0x00000110 /* GMAC4+ CORE Version */
int stmmac_reset(struct stmmac_priv *priv, void __iomem *ioaddr);
int stmmac_hwif_init(struct stmmac_priv *priv);
#endif /* __STMMAC_HWIF_H__ */

1
include/linux/stmmac.h
View file

@ -223,6 +223,7 @@ struct plat_stmmacenet_data {
struct stmmac_rxq_cfg rx_queues_cfg[MTL_MAX_RX_QUEUES];
struct stmmac_txq_cfg tx_queues_cfg[MTL_MAX_TX_QUEUES];
void (*fix_mac_speed)(void *priv, unsigned int speed);
int (*fix_soc_reset)(void *priv, void __iomem *ioaddr);
int (*serdes_powerup)(struct net_device *ndev, void *priv);
void (*serdes_powerdown)(struct net_device *ndev, void *priv);
void (*speed_mode_2500)(struct net_device *ndev, void *priv);