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arch/risc-v/litex/litex-emac: Add support for phy interrupts.

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Add support for PHY interrupts in the architecture layer of the Litex emac driver. Boards need to add handling for interrupt lines, if supported.
This commit is contained in:
Stuart Ianna 2023-10-25 14:21:57 +11:00 committed by Xiang Xiao
parent fe468b276e
commit 5fa1819492
1 changed files with 52 additions and 5 deletions
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57
arch/risc-v/src/litex/litex_emac.c
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@ -43,6 +43,10 @@
#include <nuttx/net/netdev.h>
#include <nuttx/net/ioctl.h>
#if defined(CONFIG_ARCH_PHY_INTERRUPT)
# include <nuttx/net/phy.h>
#endif
#ifdef CONFIG_NET_PKT
# include <nuttx/net/pkt.h>
#endif
@ -87,7 +91,7 @@
/* PHY Reset Timeout - in ms */
#define LITEX_PHY_RESETTIMEOUT (20)
#define LITEX_PHY_RESETTIMEOUT (20 * 1000)
/* LITEX MDIO register bit definitions */
@ -208,6 +212,9 @@ static int litex_phyread(struct litex_emac_s *priv, uint8_t phyaddr,
static int litex_phywrite(struct litex_emac_s *priv, uint8_t phyaddr,
uint8_t regaddr, uint16_t phyval);
#endif
#ifdef CONFIG_ARCH_PHY_INTERRUPT
static int litex_phyintenable(struct litex_emac_s *priv);
#endif
#if defined(CONFIG_DEBUG_NET) && defined(CONFIG_DEBUG_INFO)
static void litex_phydump(struct litex_emac_s *priv);
#else
@ -832,7 +839,7 @@ static int litex_ifup(struct net_driver_s *dev)
ret = litex_linkup(priv);
if (ret != 0)
{
nerr("ERROR: Failed to wait LINK UP error=%d\n", ret);
nerr("ERROR: Failed to wait LINK UP error= %d\n", ret);
return ret;
}
@ -885,9 +892,6 @@ static int litex_ifdown(struct net_driver_s *dev)
wd_cancel(&priv->txpoll);
wd_cancel(&priv->txtimeout);
/* Hold the PHY device in reset and mark the interface as "down" */
putreg32(1, LITEX_ETHPHY_CRG_RESET);
priv->ifup = false;
leave_critical_section(flags);
@ -1238,6 +1242,31 @@ static int litex_phyfind(struct litex_emac_s *priv, uint8_t phyaddr)
return OK;
}
/****************************************************************************
* Function: litex_phyintenable
*
* Description:
* Enable link up/down PHY interrupts.
*
* Input Parameters:
* priv - A reference to the private driver state structure
*
* Returned Value:
* Can currenly only return OK
*
****************************************************************************/
#ifdef CONFIG_ARCH_PHY_INTERRUPT
static int litex_phyintenable(struct litex_emac_s *priv)
{
uint16_t value;
litex_phyread(priv, priv->phyaddr, BOARD_PHY_INT_REG, &value);
value |= BOARD_PHY_SETEN;
litex_phywrite(priv, priv->phyaddr, BOARD_PHY_INT_REG, value);
return OK;
}
#endif
/****************************************************************************
* Function: litex_phyinit
*
@ -1341,6 +1370,24 @@ static int litex_ioctl(struct net_driver_s *dev, int cmd, unsigned long arg)
req->reg_num, req->val_in);
}
break;
#ifdef CONFIG_ARCH_PHY_INTERRUPT
case SIOCMIINOTIFY:
{
struct mii_ioctl_notify_s *req =
(struct mii_ioctl_notify_s *)((uintptr_t)arg);
ret = phy_notify_subscribe(dev->d_ifname, req->pid, &req->event);
if (ret == OK)
{
/* Enable PHY link up/down interrupts */
ret = litex_phyintenable(priv);
}
}
break;
#endif
#endif /* ifdef CONFIG_NETDEV_PHY_IOCTL */
default: