[U-Boot] [PATCH v6 2/5] net: fec_mxc: Convert into driver model

Jagan Teki
2016-10-17T08:31:01Z

This patch add driver model support for fec_mxc driver.

Cc: Simon Glass <sjg@chromium.org>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
drivers/net/fec_mxc.c | 314 ++++++++++++++++++++++++++++++++++++++++++--------
drivers/net/fec_mxc.h | 4 +
2 files changed, 271 insertions(+), 47 deletions(-)

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 0838d58..c0ec976 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -9,6 +9,7 @@
*/

#include <common.h>
+#include <dm.h>
#include <malloc.h>
#include <memalign.h>
#include <net.h>
@@ -368,11 +369,8 @@ static int fec_get_hwaddr(int dev_id, unsigned char *mac)
return !is_valid_ethaddr(mac);
}

-static int fec_set_hwaddr(struct eth_device *dev)
+static int _fec_set_hwaddr(struct fec_priv *fec, uchar *mac)
{
- uchar *mac = dev->enetaddr;
- struct fec_priv *fec = (struct fec_priv *)dev->priv;
-
writel(0, &fec->eth->iaddr1);
writel(0, &fec->eth->iaddr2);
writel(0, &fec->eth->gaddr1);
@@ -426,9 +424,8 @@ static void fec_reg_setup(struct fec_priv *fec)
* Start the FEC engine
* @param[in] dev Our device to handle
*/
-static int fec_open(struct eth_device *edev)
+static int fec_open(struct fec_priv *fec)
{
- struct fec_priv *fec = (struct fec_priv *)edev->priv;
int speed;
uint32_t addr, size;
int i;
@@ -534,14 +531,13 @@ static int fec_open(struct eth_device *edev)
return 0;
}

-static int fec_init(struct eth_device *dev, bd_t* bd)
+static int _fec_init(struct fec_priv *fec, uchar *mac)
{
- struct fec_priv *fec = (struct fec_priv *)dev->priv;
uint32_t mib_ptr = (uint32_t)&fec->eth->rmon_t_drop;
int i;

/* Initialize MAC address */
- fec_set_hwaddr(dev);
+ _fec_set_hwaddr(fec, mac);

/*
* Setup transmit descriptors, there are two in total.
@@ -587,7 +583,7 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
if (fec->xcv_type != SEVENWIRE)
miiphy_restart_aneg(dev);
#endif
- fec_open(dev);
+ fec_open(fec);
return 0;
}

@@ -595,9 +591,8 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
* Halt the FEC engine
* @param[in] dev Our device to handle
*/
-static void fec_halt(struct eth_device *dev)
+static void _fec_halt(struct fec_priv *fec)
{
- struct fec_priv *fec = (struct fec_priv *)dev->priv;
int counter = 0xffff;

/*
@@ -637,7 +632,7 @@ static void fec_halt(struct eth_device *dev)
* @param[in] length Data count in bytes
* @return 0 on success
*/
-static int fec_send(struct eth_device *dev, void *packet, int length)
+static int _fec_send(struct fec_priv *fec, void *packet, int length)
{
unsigned int status;
uint32_t size, end;
@@ -649,8 +644,6 @@ static int fec_send(struct eth_device *dev, void *packet, int length)
* This routine transmits one frame. This routine only accepts
* 6-byte Ethernet addresses.
*/
- struct fec_priv *fec = (struct fec_priv *)dev->priv;
-
/*
* Check for valid length of data.
*/
@@ -777,14 +770,14 @@ out:
return ret;
}

+
/**
* Pull one frame from the card
* @param[in] dev Our ethernet device to handle
* @return Length of packet read
*/
-static int fec_recv(struct eth_device *dev)
+static int _fec_recv(struct fec_priv *fec, uchar *mac)
{
- struct fec_priv *fec = (struct fec_priv *)dev->priv;
struct fec_bd *rbd = &fec->rbd_base[fec->rbd_index];
unsigned long ievent;
int frame_length, len = 0;
@@ -800,8 +793,8 @@ static int fec_recv(struct eth_device *dev)
writel(ievent, &fec->eth->ievent);
debug("fec_recv: ievent 0x%lx\n", ievent);
if (ievent & FEC_IEVENT_BABR) {
- fec_halt(dev);
- fec_init(dev, fec->bd);
+ _fec_halt(fec);
+ _fec_init(fec, mac);
printf("some error: 0x%08lx\n", ievent);
return 0;
}
@@ -813,10 +806,10 @@ static int fec_recv(struct eth_device *dev)
if (ievent & FEC_IEVENT_GRA) {
/* Graceful stop complete */
if (readl(&fec->eth->x_cntrl) & 0x00000001) {
- fec_halt(dev);
+ _fec_halt(fec);
writel(~0x00000001 & readl(&fec->eth->x_cntrl),
&fec->eth->x_cntrl);
- fec_init(dev, fec->bd);
+ _fec_init(fec, mac);
}
}

@@ -970,6 +963,71 @@ static void fec_free_descs(struct fec_priv *fec)
free(fec->tbd_base);
}

+struct mii_dev *fec_get_miibus(uint32_t base_addr, int dev_id)
+{
+ struct ethernet_regs *eth = (struct ethernet_regs *)base_addr;
+ struct mii_dev *bus;
+ int ret;
+
+ bus = mdio_alloc();
+ if (!bus) {
+ printf("mdio_alloc failed\n");
+ return NULL;
+ }
+ bus->read = fec_phy_read;
+ bus->write = fec_phy_write;
+ bus->priv = eth;
+ fec_set_dev_name(bus->name, dev_id);
+
+ ret = mdio_register(bus);
+ if (ret) {
+ printf("mdio_register failed\n");
+ free(bus);
+ return NULL;
+ }
+ fec_mii_setspeed(eth);
+ return bus;
+}
+
+#ifndef CONFIG_DM_ETH
+static int fec_recv(struct eth_device *dev)
+{
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ uchar *mac = dev->enetaddr;
+
+ return _fec_recv(fec, mac);
+}
+
+static int fec_send(struct eth_device *dev, void *packet, int length)
+{
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+
+ return _fec_send(fec, packet, length);
+}
+
+static void fec_halt(struct eth_device *dev)
+{
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+
+ _fec_halt(fec);
+}
+
+static int fec_set_hwaddr(struct eth_device *dev)
+{
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ uchar *mac = dev->enetaddr;
+
+ return _fec_set_hwaddr(fec, mac);
+}
+
+static int fec_init(struct eth_device *dev, bd_t *bd)
+{
+ struct fec_priv *fec = (struct fec_priv *)dev->priv;
+ uchar *mac = dev->enetaddr;
+
+ return _fec_init(fec, mac);
+}
+
#ifdef CONFIG_PHYLIB
int fec_probe(bd_t *bd, int dev_id, uint32_t base_addr,
struct mii_dev *bus, struct phy_device *phydev)
@@ -1061,32 +1119,6 @@ err1:
return ret;
}

-struct mii_dev *fec_get_miibus(uint32_t base_addr, int dev_id)
-{
- struct ethernet_regs *eth = (struct ethernet_regs *)base_addr;
- struct mii_dev *bus;
- int ret;
-
- bus = mdio_alloc();
- if (!bus) {
- printf("mdio_alloc failed\n");
- return NULL;
- }
- bus->read = fec_phy_read;
- bus->write = fec_phy_write;
- bus->priv = eth;
- fec_set_dev_name(bus->name, dev_id);
-
- ret = mdio_register(bus);
- if (ret) {
- printf("mdio_register failed\n");
- free(bus);
- return NULL;
- }
- fec_mii_setspeed(eth);
- return bus;
-}
-
int fecmxc_initialize_multi(bd_t *bd, int dev_id, int phy_id, uint32_t addr)
{
uint32_t base_mii;
@@ -1146,3 +1178,191 @@ int fecmxc_register_mii_postcall(struct eth_device *dev, int (*cb)(int))
return 0;
}
#endif
+
+#else
+
+static int fec_set_hwaddr(struct udevice *dev)
+{
+ struct fec_priv *fec = dev_get_priv(dev);
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ uchar *mac = pdata->enetaddr;
+
+ return _fec_set_hwaddr(fec, mac);
+}
+
+static void fec_halt(struct udevice *dev)
+{
+ struct fec_priv *fec = dev_get_priv(dev);
+
+ _fec_halt(fec);
+}
+
+static int fec_recv(struct udevice *dev, int flags, uchar **packetp)
+{
+ struct fec_priv *fec = dev_get_priv(dev);
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ uchar *mac = pdata->enetaddr;
+
+ return _fec_recv(fec, mac);
+}
+
+static int fec_send(struct udevice *dev, void *packet, int length)
+{
+ struct fec_priv *fec = dev_get_priv(dev);
+
+ return _fec_send(fec, packet, length);
+}
+
+static int fec_init(struct udevice *dev)
+{
+ struct fec_priv *fec = dev_get_priv(dev);
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ uchar *mac = pdata->enetaddr;
+
+ return _fec_init(fec, mac);
+}
+
+static const struct eth_ops fecmxc_ops = {
+ .start = fec_init,
+ .send = fec_send,
+ .recv = fec_recv,
+ .stop = fec_halt,
+ .write_hwaddr = fec_set_hwaddr,
+};
+
+static int fec_phy_init(struct fec_priv *priv, struct udevice *dev)
+{
+ struct phy_device *phydev;
+ int mask = 0xffffffff;
+
+#ifdef CONFIG_PHYLIB
+ mask = 1 << CONFIG_FEC_MXC_PHYADDR;
+#endif
+
+ phydev = phy_find_by_mask(priv->bus, mask, priv->interface);
+ if (!phydev)
+ return -ENODEV;
+
+ phy_connect_dev(phydev, dev);
+
+ priv->phydev = phydev;
+ phy_config(phydev);
+
+ return 0;
+}
+
+static int fecmxc_probe(struct udevice *dev)
+{
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct fec_priv *priv = dev_get_priv(dev);
+ struct mii_dev *bus = NULL;
+ int dev_id = -1;
+ unsigned char ethaddr[6];
+ uint32_t start;
+ int ret;
+
+ ret = fec_alloc_descs(priv);
+ if (ret)
+ return ret;
+
+ bus = fec_get_miibus((uint32_t)priv->eth, dev_id);
+ if (!bus)
+ goto err_mii;
+
+ priv->bus = bus;
+ priv->xcv_type = CONFIG_FEC_XCV_TYPE;
+ priv->interface = pdata->phy_interface;
+ ret = fec_phy_init(priv, dev);
+ if (ret)
+ goto err_phy;
+
+ /* Reset chip. */
+ writel(readl(&priv->eth->ecntrl) | FEC_ECNTRL_RESET, &priv->eth->ecntrl);
+ start = get_timer(0);
+ while (readl(&priv->eth->ecntrl) & FEC_ECNTRL_RESET) {
+ if (get_timer(start) > (CONFIG_SYS_HZ * 5)) {
+ printf("FEC MXC: Timeout reseting chip\n");
+ goto err_timeout;
+ }
+ udelay(10);
+ }
+
+ fec_reg_setup(priv);
+ fec_set_dev_name((char *)dev->name, dev_id);
+ priv->dev_id = (dev_id == -1) ? 0 : dev_id;
+
+ ret = fec_get_hwaddr(dev_id, ethaddr);
+ if (!ret) {
+ debug("got MAC%d address from fuse: %pM\n", dev_id, ethaddr);
+ memcpy(pdata->enetaddr, ethaddr, 6);
+ if (!getenv("ethaddr"))
+ eth_setenv_enetaddr("ethaddr", ethaddr);
+ }
+
+ return 0;
+
+err_timeout:
+ free(priv->phydev);
+err_phy:
+ mdio_unregister(bus);
+ free(bus);
+err_mii:
+ fec_free_descs(priv);
+ return ret;
+}
+
+static int fecmxc_remove(struct udevice *dev)
+{
+ struct fec_priv *priv = dev_get_priv(dev);
+
+ free(priv->phydev);
+ fec_free_descs(priv);
+ mdio_unregister(priv->bus);
+ mdio_free(priv->bus);
+
+ return 0;
+}
+
+static int fecmxc_ofdata_to_platdata(struct udevice *dev)
+{
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct fec_priv *priv = dev_get_priv(dev);
+ const char *phy_mode;
+
+ pdata->iobase = (phys_addr_t)dev_get_addr(dev);
+ priv->eth = (struct ethernet_regs *)pdata->iobase;
+
+ pdata->phy_interface = -1;
+ phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL);
+ if (phy_mode)
+ pdata->phy_interface = phy_get_interface_by_name(phy_mode);
+ if (pdata->phy_interface == -1) {
+ debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
+ return -EINVAL;
+ }
+
+ /* TODO
+ * Need to get the reset-gpio and related properties from DT
+ * and implemet the enet reset code on .probe call
+ */
+
+ return 0;
+}
+
+static const struct udevice_id fecmxc_ids[] = {
+ { .compatible = "fsl,imx6q-fec" },
+ { }
+};
+
+U_BOOT_DRIVER(fec_gem) = {
+ .name = "fecmxc",
+ .id = UCLASS_ETH,
+ .of_match = fecmxc_ids,
+ .ofdata_to_platdata = fecmxc_ofdata_to_platdata,
+ .probe = fecmxc_probe,
+ .remove = fecmxc_remove,
+ .ops = &fecmxc_ops,
+ .priv_auto_alloc_size = sizeof(struct fec_priv),
+ .platdata_auto_alloc_size = sizeof(struct eth_pdata),
+};
+#endif
diff --git a/drivers/net/fec_mxc.h b/drivers/net/fec_mxc.h
index 0717cc6..9fc6153 100644
--- a/drivers/net/fec_mxc.h
+++ b/drivers/net/fec_mxc.h
@@ -264,6 +264,10 @@ struct fec_priv {
int phy_id;
int (*mii_postcall)(int);
#endif
+
+#ifdef CONFIG_DM_ETH
+ u32 interface;
+#endif
};

/**
--
2.7.4