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Add support for a network device IOCTL to access PHY registers. Ioctls only implemented for STM32. From Lazlo

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This commit is contained in:
Gregory Nutt
2014-06-27 09:30:41 -06:00
parent 6a451baa51
commit f8e5e82402
1 changed files with 63 additions and 0 deletions
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arch/arm/src/stm32/stm32_eth.c
+63
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@@ -665,6 +665,9 @@ static void stm32_rxdescinit(FAR struct stm32_ethmac_s *priv);
/* PHY Initialization */
#ifdef CONFIG_NETDEV_PHY_IOCTL
static int stm32_ioctl(int cmd, struct mii_ioctl_data *req);
#endif
static int stm32_phyread(uint16_t phydevaddr, uint16_t phyregaddr, uint16_t *value);
static int stm32_phywrite(uint16_t phydevaddr, uint16_t phyregaddr, uint16_t value);
#ifdef CONFIG_ETH0_PHY_DM9161
@@ -2475,6 +2478,63 @@ static void stm32_rxdescinit(FAR struct stm32_ethmac_s *priv)
stm32_putreg((uint32_t)priv->rxtable, STM32_ETH_DMARDLAR);
}
/****************************************************************************
* Function: stm32_ioctl
*
* Description:
* Executes the SIOCxMIIxxx command and responds using the request struct
* that must be provided as its 2nd parameter.
*
* When called with SIOCGMIIPHY it will get the PHY address for the device
* and write it to the req->phy_id field of the request struct.
*
* When called with SIOCGMIIREG it will read a register of the PHY that is
* specified using the req->reg_no struct field and then write its output
* to the req->val_out field.
*
* When called with SIOCSMIIREG it will write to a register of the PHY that
* is specified using the req->reg_no struct field and use req->val_in as
* its input.
*
* Parameters:
* cmd - SIOCxMIIxxx command code
* req - request structure also used to return values
*
* Returned Value: Negated errno on failure.
*
* Assumptions:
*
****************************************************************************/
#ifdef CONFIG_NETDEV_PHY_IOCTL
static int stm32_ioctl(int cmd, struct mii_ioctl_data *req)
{
int ret = -ENOTTY;
switch (cmd)
{
case SIOCGMIIPHY: /* Get MII PHY address */
req->phy_id = CONFIG_STM32_PHYADDR;
ret = OK;
break;
case SIOCGMIIREG: /* Get register from MII PHY */
ret = stm32_phyread(req->phy_id, req->reg_num, &req->val_out);
break;
case SIOCSMIIREG: /* Set register in MII PHY */
ret = stm32_phywrite(req->phy_id, req->reg_num, req->val_in);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
#endif /* CONFIG_NETDEV_PHY_IOCTL */
/****************************************************************************
* Function: stm32_phyread
*
@@ -3460,6 +3520,9 @@ int stm32_ethinitialize(int intf)
#ifdef CONFIG_NET_IGMP
priv->dev.d_addmac = stm32_addmac; /* Add multicast MAC address */
priv->dev.d_rmmac = stm32_rmmac; /* Remove multicast MAC address */
#endif
#ifdef CONFIG_NETDEV_PHY_IOCTL
priv->dev.d_ioctl = stm32_ioctl; /* Support PHY ioctl() calls */
#endif
priv->dev.d_private = (void*)g_stm32ethmac; /* Used to recover private state from dev */