[PATCH 1/2] net: ethernet: cavium: octeon: use phydev from struct net_device

From: Philippe Reynes
Date: Sat Jul 02 2016 - 17:37:45 EST

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The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phy in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@xxxxxxxxx>
---
drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 86 ++++++++++------------
1 files changed, 40 insertions(+), 46 deletions(-)

diff --git a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
index 388cd79..de678e6 100644
--- a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
+++ b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
@@ -146,7 +146,6 @@ struct octeon_mgmt {
struct device *dev;
struct napi_struct napi;
struct tasklet_struct tx_clean_tasklet;
- struct phy_device *phydev;
struct device_node *phy_np;
resource_size_t mix_phys;
resource_size_t mix_size;
@@ -787,14 +786,12 @@ static int octeon_mgmt_ioctl_hwtstamp(struct net_device *netdev,
static int octeon_mgmt_ioctl(struct net_device *netdev,
struct ifreq *rq, int cmd)
{
- struct octeon_mgmt *p = netdev_priv(netdev);
-
switch (cmd) {
case SIOCSHWTSTAMP:
return octeon_mgmt_ioctl_hwtstamp(netdev, rq, cmd);
default:
- if (p->phydev)
- return phy_mii_ioctl(p->phydev, rq, cmd);
+ if (netdev->phydev)
+ return phy_mii_ioctl(netdev->phydev, rq, cmd);
return -EINVAL;
}
}
@@ -836,16 +833,18 @@ static void octeon_mgmt_enable_link(struct octeon_mgmt *p)

static void octeon_mgmt_update_link(struct octeon_mgmt *p)
{
+ struct net_device *ndev = p->netdev;
+ struct phy_device *phydev = ndev->phydev;
union cvmx_agl_gmx_prtx_cfg prtx_cfg;

prtx_cfg.u64 = cvmx_read_csr(p->agl + AGL_GMX_PRT_CFG);

- if (!p->phydev->link)
+ if (!phydev->link)
prtx_cfg.s.duplex = 1;
else
- prtx_cfg.s.duplex = p->phydev->duplex;
+ prtx_cfg.s.duplex = phydev->duplex;

- switch (p->phydev->speed) {
+ switch (phydev->speed) {
case 10:
prtx_cfg.s.speed = 0;
prtx_cfg.s.slottime = 0;
@@ -871,7 +870,7 @@ static void octeon_mgmt_update_link(struct octeon_mgmt *p)
prtx_cfg.s.speed_msb = 0;
/* Only matters for half-duplex */
prtx_cfg.s.slottime = 1;
- prtx_cfg.s.burst = p->phydev->duplex;
+ prtx_cfg.s.burst = phydev->duplex;
}
break;
case 0: /* No link */
@@ -894,9 +893,9 @@ static void octeon_mgmt_update_link(struct octeon_mgmt *p)
/* MII (both speeds) and RGMII 1000 speed. */
agl_clk.s.clk_cnt = 1;
if (prtx_ctl.s.mode == 0) { /* RGMII mode */
- if (p->phydev->speed == 10)
+ if (phydev->speed == 10)
agl_clk.s.clk_cnt = 50;
- else if (p->phydev->speed == 100)
+ else if (phydev->speed == 100)
agl_clk.s.clk_cnt = 5;
}
cvmx_write_csr(p->agl + AGL_GMX_TX_CLK, agl_clk.u64);
@@ -906,39 +905,40 @@ static void octeon_mgmt_update_link(struct octeon_mgmt *p)
static void octeon_mgmt_adjust_link(struct net_device *netdev)
{
struct octeon_mgmt *p = netdev_priv(netdev);
+ struct phy_device *phydev = netdev->phydev;
unsigned long flags;
int link_changed = 0;

- if (!p->phydev)
+ if (!phydev)
return;

spin_lock_irqsave(&p->lock, flags);

- if (!p->phydev->link && p->last_link)
+ if (!phydev->link && p->last_link)
link_changed = -1;

- if (p->phydev->link
- && (p->last_duplex != p->phydev->duplex
- || p->last_link != p->phydev->link
- || p->last_speed != p->phydev->speed)) {
+ if (phydev->link &&
+ (p->last_duplex != phydev->duplex ||
+ p->last_link != phydev->link ||
+ p->last_speed != phydev->speed)) {
octeon_mgmt_disable_link(p);
link_changed = 1;
octeon_mgmt_update_link(p);
octeon_mgmt_enable_link(p);
}

- p->last_link = p->phydev->link;
- p->last_speed = p->phydev->speed;
- p->last_duplex = p->phydev->duplex;
+ p->last_link = phydev->link;
+ p->last_speed = phydev->speed;
+ p->last_duplex = phydev->duplex;

spin_unlock_irqrestore(&p->lock, flags);

if (link_changed != 0) {
if (link_changed > 0) {
pr_info("%s: Link is up - %d/%s\n", netdev->name,
- p->phydev->speed,
- DUPLEX_FULL == p->phydev->duplex ?
+ phydev->speed,
+ phydev->duplex == DUPLEX_FULL ?
"Full" : "Half");
} else {
pr_info("%s: Link is down\n", netdev->name);
@@ -949,6 +949,7 @@ static void octeon_mgmt_adjust_link(struct net_device *netdev)
static int octeon_mgmt_init_phy(struct net_device *netdev)
{
struct octeon_mgmt *p = netdev_priv(netdev);
+ struct phy_device *phydev = NULL;

if (octeon_is_simulation() || p->phy_np == NULL) {
/* No PHYs in the simulator. */
@@ -956,11 +957,11 @@ static int octeon_mgmt_init_phy(struct net_device *netdev)
return 0;
}

- p->phydev = of_phy_connect(netdev, p->phy_np,
- octeon_mgmt_adjust_link, 0,
- PHY_INTERFACE_MODE_MII);
+ phydev = of_phy_connect(netdev, p->phy_np,
+ octeon_mgmt_adjust_link, 0,
+ PHY_INTERFACE_MODE_MII);

- if (!p->phydev)
+ if (!phydev)
return -ENODEV;

return 0;
@@ -1080,9 +1081,9 @@ static int octeon_mgmt_open(struct net_device *netdev)
}

/* Set the mode of the interface, RGMII/MII. */
- if (OCTEON_IS_MODEL(OCTEON_CN6XXX) && p->phydev) {
+ if (OCTEON_IS_MODEL(OCTEON_CN6XXX) && netdev->phydev) {
union cvmx_agl_prtx_ctl agl_prtx_ctl;
- int rgmii_mode = (p->phydev->supported &
+ int rgmii_mode = (netdev->phydev->supported &
(SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)) != 0;

agl_prtx_ctl.u64 = cvmx_read_csr(p->agl_prt_ctl);
@@ -1205,7 +1206,7 @@ static int octeon_mgmt_open(struct net_device *netdev)

/* Configure the port duplex, speed and enables */
octeon_mgmt_disable_link(p);
- if (p->phydev)
+ if (netdev->phydev)
octeon_mgmt_update_link(p);
octeon_mgmt_enable_link(p);

@@ -1214,9 +1215,9 @@ static int octeon_mgmt_open(struct net_device *netdev)
/* PHY is not present in simulator. The carrier is enabled
* while initializing the phy for simulator, leave it enabled.
*/
- if (p->phydev) {
+ if (netdev->phydev) {
netif_carrier_off(netdev);
- phy_start_aneg(p->phydev);
+ phy_start_aneg(netdev->phydev);
}

netif_wake_queue(netdev);
@@ -1244,9 +1245,8 @@ static int octeon_mgmt_stop(struct net_device *netdev)
napi_disable(&p->napi);
netif_stop_queue(netdev);

- if (p->phydev)
- phy_disconnect(p->phydev);
- p->phydev = NULL;
+ if (netdev->phydev)
+ phy_disconnect(netdev->phydev);

netif_carrier_off(netdev);

@@ -1349,10 +1349,8 @@ static void octeon_mgmt_get_drvinfo(struct net_device *netdev,
static int octeon_mgmt_get_settings(struct net_device *netdev,
struct ethtool_cmd *cmd)
{
- struct octeon_mgmt *p = netdev_priv(netdev);
-
- if (p->phydev)
- return phy_ethtool_gset(p->phydev, cmd);
+ if (netdev->phydev)
+ return phy_ethtool_gset(netdev->phydev, cmd);

return -EOPNOTSUPP;
}
@@ -1360,26 +1358,22 @@ static int octeon_mgmt_get_settings(struct net_device *netdev,
static int octeon_mgmt_set_settings(struct net_device *netdev,
struct ethtool_cmd *cmd)
{
- struct octeon_mgmt *p = netdev_priv(netdev);
-
if (!capable(CAP_NET_ADMIN))
return -EPERM;

- if (p->phydev)
- return phy_ethtool_sset(p->phydev, cmd);
+ if (netdev->phydev)
+ return phy_ethtool_sset(netdev->phydev, cmd);

return -EOPNOTSUPP;
}

static int octeon_mgmt_nway_reset(struct net_device *dev)
{
- struct octeon_mgmt *p = netdev_priv(dev);
-
if (!capable(CAP_NET_ADMIN))
return -EPERM;

- if (p->phydev)
- return phy_start_aneg(p->phydev);
+ if (dev->phydev)
+ return phy_start_aneg(dev->phydev);

return -EOPNOTSUPP;
}
--
1.7.4.4

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