[U-Boot] [PATCH] net: usb: r8152: Add DM support
Stefan Roese
sr at denx.de
Tue Jun 28 16:28:47 CEST 2016
Hi Simon,
On 26.06.2016 04:53, Simon Glass wrote:
> On 22 June 2016 at 01:18, Stefan Roese <sr at denx.de> wrote:
>> Add support for driver model, so that CONFIG_DM_ETH can be defined and
>> used with this driver.
>>
>> This patch also adds the read_rom_hwaddr() callback so that the ROM MAC
>> address will be used to the DM part of this driver.
>>
>> Signed-off-by: Stefan Roese <sr at denx.de>
>> Cc: Stephen Warren <swarren at nvidia.com>
>> Cc: Ted Chen <tedchen at realtek.com>
>> Cc: Simon Glass <sjg at chromium.org>
>> Cc: Joe Hershberger <joe.hershberger at ni.com>
>> ---
>> drivers/usb/eth/r8152.c | 235 ++++++++++++++++++++++++++++++++++++++++-----
>> drivers/usb/eth/r8152.h | 4 +
>> drivers/usb/eth/r8152_fw.c | 2 +
>> 3 files changed, 219 insertions(+), 22 deletions(-)
>
> Reviewed-by: Simon Glass <sjg at chromium.org>
>
> With a few comments below.
>
>>
>> diff --git a/drivers/usb/eth/r8152.c b/drivers/usb/eth/r8152.c
>> index 325b70c..a148267 100644
>> --- a/drivers/usb/eth/r8152.c
>> +++ b/drivers/usb/eth/r8152.c
>> @@ -3,9 +3,10 @@
>> *
>> * SPDX-License-Identifier: GPL-2.0
>> *
>> - */
>> + */
>>
>> #include <common.h>
>> +#include <dm.h>
>> #include <errno.h>
>> #include <malloc.h>
>> #include <usb.h>
>> @@ -15,6 +16,7 @@
>> #include "usb_ether.h"
>> #include "r8152.h"
>>
>> +#ifndef CONFIG_DM_ETH
>> /* local vars */
>> static int curr_eth_dev; /* index for name of next device detected */
>>
>> @@ -23,12 +25,6 @@ struct r8152_dongle {
>> unsigned short product;
>> };
>>
>> -struct r8152_version {
>> - unsigned short tcr;
>> - unsigned short version;
>> - bool gmii;
>> -};
>> -
>> static const struct r8152_dongle const r8152_dongles[] = {
>> /* Realtek */
>> { 0x0bda, 0x8050 },
>> @@ -54,6 +50,13 @@ static const struct r8152_dongle const r8152_dongles[] = {
>> /* Nvidia */
>> { 0x0955, 0x09ff },
>> };
>> +#endif
>> +
>> +struct r8152_version {
>> + unsigned short tcr;
>> + unsigned short version;
>> + bool gmii;
>> +};
>>
>> static const struct r8152_version const r8152_versions[] = {
>> { 0x4c00, RTL_VER_01, 0 },
>> @@ -1176,11 +1179,8 @@ static int rtl_ops_init(struct r8152 *tp)
>> return ret;
>> }
>>
>> -static int r8152_init(struct eth_device *eth, bd_t *bd)
>> +static int r8152_init_common(struct r8152 *tp)
>> {
>> - struct ueth_data *dev = (struct ueth_data *)eth->priv;
>> - struct r8152 *tp = (struct r8152 *)dev->dev_priv;
>> -
>> u8 speed;
>> int timeout = 0;
>> int link_detected;
>> @@ -1210,14 +1210,11 @@ static int r8152_init(struct eth_device *eth, bd_t *bd)
>> return 0;
>> }
>>
>> -static int r8152_send(struct eth_device *eth, void *packet, int length)
>> +static int r8152_send_common(struct ueth_data *ueth, void *packet, int length)
>> {
>> - struct ueth_data *dev = (struct ueth_data *)eth->priv;
>> -
>> + struct usb_device *udev = ueth->pusb_dev;
>> u32 opts1, opts2 = 0;
>> -
>> int err;
>> -
>> int actual_len;
>> unsigned char msg[PKTSIZE + sizeof(struct tx_desc)];
>> struct tx_desc *tx_desc = (struct tx_desc *)msg;
>> @@ -1231,18 +1228,31 @@ static int r8152_send(struct eth_device *eth, void *packet, int length)
>>
>> memcpy(msg + sizeof(struct tx_desc), (void *)packet, length);
>>
>> - err = usb_bulk_msg(dev->pusb_dev,
>> - usb_sndbulkpipe(dev->pusb_dev, dev->ep_out),
>> - (void *)msg,
>> - length + sizeof(struct tx_desc),
>> - &actual_len,
>> - USB_BULK_SEND_TIMEOUT);
>> + err = usb_bulk_msg(udev, usb_sndbulkpipe(udev, ueth->ep_out),
>> + (void *)msg, length + sizeof(struct tx_desc),
>> + &actual_len, USB_BULK_SEND_TIMEOUT);
>> debug("Tx: len = %zu, actual = %u, err = %d\n",
>> length + sizeof(struct tx_desc), actual_len, err);
>>
>> return err;
>> }
>>
>> +#ifndef CONFIG_DM_ETH
>> +static int r8152_init(struct eth_device *eth, bd_t *bd)
>> +{
>> + struct ueth_data *dev = (struct ueth_data *)eth->priv;
>> + struct r8152 *tp = (struct r8152 *)dev->dev_priv;
>> +
>> + return r8152_init_common(tp);
>> +}
>> +
>> +static int r8152_send(struct eth_device *eth, void *packet, int length)
>> +{
>> + struct ueth_data *dev = (struct ueth_data *)eth->priv;
>> +
>> + return r8152_send_common(dev, packet, length);
>> +}
>> +
>> static int r8152_recv(struct eth_device *eth)
>> {
>> struct ueth_data *dev = (struct ueth_data *)eth->priv;
>> @@ -1454,3 +1464,184 @@ int r8152_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
>> debug("MAC %pM\n", eth->enetaddr);
>> return 1;
>> }
>> +#endif /* !CONFIG_DM_ETH */
>> +
>> +#ifdef CONFIG_DM_ETH
>> +static int r8152_eth_start(struct udevice *dev)
>> +{
>> + struct r8152 *tp = dev_get_priv(dev);
>> +
>> + debug("** %s (%d)\n", __func__, __LINE__);
>> +
>> + return r8152_init_common(tp);
>> +}
>> +
>> +void r8152_eth_stop(struct udevice *dev)
>> +{
>> + struct r8152 *tp = dev_get_priv(dev);
>> +
>> + debug("** %s (%d)\n", __func__, __LINE__);
>> +
>> + tp->rtl_ops.disable(tp);
>> +}
>> +
>> +int r8152_eth_send(struct udevice *dev, void *packet, int length)
>> +{
>> + struct r8152 *tp = dev_get_priv(dev);
>> +
>> + return r8152_send_common(&tp->ueth, packet, length);
>> +}
>> +
>> +int r8152_eth_recv(struct udevice *dev, int flags, uchar **packetp)
>> +{
>> + struct r8152 *tp = dev_get_priv(dev);
>> + struct ueth_data *ueth = &tp->ueth;
>> + uint8_t *ptr;
>> + int ret, len;
>> + struct rx_desc *rx_desc;
>> + u16 packet_len;
>> +
>> + len = usb_ether_get_rx_bytes(ueth, &ptr);
>> + debug("%s: first try, len=%d\n", __func__, len);
>> + if (!len) {
>> + if (!(flags & ETH_RECV_CHECK_DEVICE))
>> + return -EAGAIN;
>> + ret = usb_ether_receive(ueth, RTL8152_AGG_BUF_SZ);
>> + if (ret == -EAGAIN)
>> + return ret;
>
> What about if ret returns some other error?
Good catch. Will fix in v2.
BTW: I've cloned this part from other drivers (e.g. smsc95xx.c
and asix.c). So they would need some additional error handling here
as well.
>> +
>> + len = usb_ether_get_rx_bytes(ueth, &ptr);
>> + debug("%s: second try, len=%d\n", __func__, len);
>> + }
>> +
>> + rx_desc = (struct rx_desc *)ptr;
>> + packet_len = le32_to_cpu(rx_desc->opts1) & RX_LEN_MASK;
>> + packet_len -= CRC_SIZE;
>> +
>> + if (packet_len > len - (sizeof(struct rx_desc) + CRC_SIZE)) {
>> + debug("Rx: too large packet: %d\n", packet_len);
>> + goto err;
>> + }
>> +
>> + *packetp = ptr + sizeof(struct rx_desc);
>> + return packet_len;
>> +
>> +err:
>> + usb_ether_advance_rxbuf(ueth, -1);
>> + return -EINVAL;
>
> -E2BIG?
Hmmm. This does not seem appropriate here:
#define E2BIG 7 /* Argument list too long */
Or is it commonly used also for non argument list return failure?
>> +}
>> +
>> +static int r8152_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
>> +{
>> + struct r8152 *tp = dev_get_priv(dev);
>> +
>> + packet_len += sizeof(struct rx_desc) + CRC_SIZE;
>> + packet_len = ALIGN(packet_len, 8);
>> + usb_ether_advance_rxbuf(&tp->ueth, packet_len);
>> +
>> + return 0;
>> +}
>> +
>> +static int r8152_write_hwaddr(struct udevice *dev)
>> +{
>> + struct eth_pdata *pdata = dev_get_platdata(dev);
>> + struct r8152 *tp = dev_get_priv(dev);
>> +
>> + unsigned char enetaddr[8] = { 0 };
>> +
>> + debug("** %s (%d)\n", __func__, __LINE__);
>> + memcpy(enetaddr, pdata->enetaddr, ETH_ALEN);
>> +
>> + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);
>> + pla_ocp_write(tp, PLA_IDR, BYTE_EN_SIX_BYTES, 8, enetaddr);
>> + ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);
>> +
>> + debug("MAC %pM\n", pdata->enetaddr);
>> + return 0;
>> +}
>> +
>> +int r8152_read_rom_hwaddr(struct udevice *dev)
>> +{
>> + struct eth_pdata *pdata = dev_get_platdata(dev);
>> + struct r8152 *tp = dev_get_priv(dev);
>> +
>> + debug("** %s (%d)\n", __func__, __LINE__);
>> + r8152_read_mac(tp, pdata->enetaddr);
>> + return 0;
>> +}
>> +
>> +static int r8152_eth_probe(struct udevice *dev)
>> +{
>> + struct usb_device *udev = dev_get_parent_priv(dev);
>> + struct eth_pdata *pdata = dev_get_platdata(dev);
>> + struct r8152 *tp = dev_get_priv(dev);
>> + struct ueth_data *ueth = &tp->ueth;
>> +
>> + tp->udev = udev;
>> + r8152_read_mac(tp, pdata->enetaddr);
>> +
>> + r8152b_get_version(tp);
>> +
>> + if (rtl_ops_init(tp))
>> + return 0;
>
> Why 0? Isn't this an error?
Right. Will fix in v2.
Thanks for the review,
Stefan
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