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dm: net: Adjust designware driver to support driver model

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Add driver model support to the designware driver. This reuses most of the
existing code except for some duplication in the probe() method.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
master
Simon Glass 10 years ago
parent 64dcd25f55
commit 75577ba45a
2 changed files with 153 additions and 17 deletions
  1. 167
      drivers/net/designware.c
  2. 3
      drivers/net/designware.h

167
drivers/net/designware.c
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@ -10,6 +10,7 @@
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <miiphy.h>
#include <malloc.h>
@ -18,6 +19,8 @@
#include <asm/io.h>
#include "designware.h"
DECLARE_GLOBAL_DATA_PTR;
#if !defined(CONFIG_PHYLIB)
# error "DesignWare Ether MAC requires PHYLIB - missing CONFIG_PHYLIB"
#endif
@ -343,11 +346,11 @@ static int _dw_eth_send(struct dw_eth_dev *priv, void *packet, int length)
return 0;
}
static int _dw_eth_recv(struct dw_eth_dev *priv)
static int _dw_eth_recv(struct dw_eth_dev *priv, uchar **packetp)
{
u32 status, desc_num = priv->rx_currdescnum;
struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num];
int length = 0;
int length = -EAGAIN;
uint32_t desc_start = (uint32_t)desc_p;
uint32_t desc_end = desc_start +
roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN);
@ -368,26 +371,35 @@ static int _dw_eth_recv(struct dw_eth_dev *priv)
/* Invalidate received data */
data_end = data_start + roundup(length, ARCH_DMA_MINALIGN);
invalidate_dcache_range(data_start, data_end);
*packetp = desc_p->dmamac_addr;
}
net_process_received_packet(desc_p->dmamac_addr, length);
return length;
}
/*
* Make the current descriptor valid again and go to
* the next one
*/
desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA;
static int _dw_free_pkt(struct dw_eth_dev *priv)
{
u32 desc_num = priv->rx_currdescnum;
struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num];
uint32_t desc_start = (uint32_t)desc_p;
uint32_t desc_end = desc_start +
roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN);
/* Flush only status field - others weren't changed */
flush_dcache_range(desc_start, desc_end);
/*
* Make the current descriptor valid again and go to
* the next one
*/
desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA;
/* Test the wrap-around condition. */
if (++desc_num >= CONFIG_RX_DESCR_NUM)
desc_num = 0;
}
/* Flush only status field - others weren't changed */
flush_dcache_range(desc_start, desc_end);
/* Test the wrap-around condition. */
if (++desc_num >= CONFIG_RX_DESCR_NUM)
desc_num = 0;
priv->rx_currdescnum = desc_num;
return length;
return 0;
}
static int dw_phy_init(struct dw_eth_dev *priv, void *dev)
@ -414,6 +426,7 @@ static int dw_phy_init(struct dw_eth_dev *priv, void *dev)
return 0;
}
#ifndef CONFIG_DM_ETH
static int dw_eth_init(struct eth_device *dev, bd_t *bis)
{
return _dw_eth_init(dev->priv, dev->enetaddr);
@ -426,7 +439,17 @@ static int dw_eth_send(struct eth_device *dev, void *packet, int length)
static int dw_eth_recv(struct eth_device *dev)
{
return _dw_eth_recv(dev->priv);
uchar *packet;
int length;
length = _dw_eth_recv(dev->priv, &packet);
if (length == -EAGAIN)
return 0;
net_process_received_packet(packet, length);
_dw_free_pkt(dev->priv);
return 0;
}
static void dw_eth_halt(struct eth_device *dev)
@ -486,3 +509,115 @@ int designware_initialize(ulong base_addr, u32 interface)
return dw_phy_init(priv, dev);
}
#endif
#ifdef CONFIG_DM_ETH
static int designware_eth_start(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
return _dw_eth_init(dev->priv, pdata->enetaddr);
}
static int designware_eth_send(struct udevice *dev, void *packet, int length)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_eth_send(priv, packet, length);
}
static int designware_eth_recv(struct udevice *dev, uchar **packetp)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_eth_recv(priv, packetp);
}
static int designware_eth_free_pkt(struct udevice *dev, uchar *packet,
int length)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_free_pkt(priv);
}
static void designware_eth_stop(struct udevice *dev)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_eth_halt(priv);
}
static int designware_eth_write_hwaddr(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_write_hwaddr(priv, pdata->enetaddr);
}
static int designware_eth_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
struct dw_eth_dev *priv = dev_get_priv(dev);
int ret;
debug("%s, iobase=%lx, priv=%p\n", __func__, pdata->iobase, priv);
priv->mac_regs_p = (struct eth_mac_regs *)pdata->iobase;
priv->dma_regs_p = (struct eth_dma_regs *)(pdata->iobase +
DW_DMA_BASE_OFFSET);
priv->interface = pdata->phy_interface;
dw_mdio_init(dev->name, priv->mac_regs_p);
priv->bus = miiphy_get_dev_by_name(dev->name);
ret = dw_phy_init(priv, dev);
debug("%s, ret=%d\n", __func__, ret);
return ret;
}
static const struct eth_ops designware_eth_ops = {
.start = designware_eth_start,
.send = designware_eth_send,
.recv = designware_eth_recv,
.free_pkt = designware_eth_free_pkt,
.stop = designware_eth_stop,
.write_hwaddr = designware_eth_write_hwaddr,
};
static int designware_eth_ofdata_to_platdata(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
const char *phy_mode;
pdata->iobase = dev_get_addr(dev);
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;
}
return 0;
}
static const struct udevice_id designware_eth_ids[] = {
{ .compatible = "allwinner,sun7i-a20-gmac" },
{ }
};
U_BOOT_DRIVER(eth_sandbox) = {
.name = "eth_designware",
.id = UCLASS_ETH,
.of_match = designware_eth_ids,
.ofdata_to_platdata = designware_eth_ofdata_to_platdata,
.probe = designware_eth_probe,
.ops = &designware_eth_ops,
.priv_auto_alloc_size = sizeof(struct dw_eth_dev),
.platdata_auto_alloc_size = sizeof(struct eth_pdata),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
#endif

3
drivers/net/designware.h
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@ -228,8 +228,9 @@ struct dw_eth_dev {
struct eth_mac_regs *mac_regs_p;
struct eth_dma_regs *dma_regs_p;
#ifndef CONFIG_DM_ETH
struct eth_device *dev;
#endif
struct phy_device *phydev;
struct mii_dev *bus;
};

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