forked from Minki/linux
net/usb: add relative mii functions for r815x
Base on cdc_ether, add the mii functions for RTL8152 and RTL8153. The RTL8152 and RTL8153 support ECM mode which use the driver of cdc_ether. Add the mii functions. Then, the basic PHY access is possible. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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d77e41e127
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@ -11,7 +11,7 @@ obj-$(CONFIG_USB_HSO) += hso.o
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obj-$(CONFIG_USB_NET_AX8817X) += asix.o
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asix-y := asix_devices.o asix_common.o ax88172a.o
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obj-$(CONFIG_USB_NET_AX88179_178A) += ax88179_178a.o
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obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o
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obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o r815x.o
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obj-$(CONFIG_USB_NET_CDC_EEM) += cdc_eem.o
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obj-$(CONFIG_USB_NET_DM9601) += dm9601.o
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obj-$(CONFIG_USB_NET_SMSC75XX) += smsc75xx.o
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@ -646,13 +646,18 @@ static const struct usb_device_id products [] = {
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},
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/* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
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#if defined(CONFIG_USB_RTL8152) || defined(CONFIG_USB_RTL8152_MODULE)
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{
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USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
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USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
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.driver_info = 0,
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},
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#endif
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/* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
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{
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USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
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USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
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.driver_info = 0,
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},
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/*
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* WHITELIST!!!
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231
drivers/net/usb/r815x.c
Normal file
231
drivers/net/usb/r815x.c
Normal file
@ -0,0 +1,231 @@
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/mii.h>
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#include <linux/usb.h>
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#include <linux/usb/cdc.h>
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#include <linux/usb/usbnet.h>
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#define RTL815x_REQT_READ 0xc0
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#define RTL815x_REQT_WRITE 0x40
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#define RTL815x_REQ_GET_REGS 0x05
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#define RTL815x_REQ_SET_REGS 0x05
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#define MCU_TYPE_PLA 0x0100
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#define OCP_BASE 0xe86c
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#define BASE_MII 0xa400
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#define BYTE_EN_DWORD 0xff
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#define BYTE_EN_WORD 0x33
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#define BYTE_EN_BYTE 0x11
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#define R815x_PHY_ID 32
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#define REALTEK_VENDOR_ID 0x0bda
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static int pla_read_word(struct usb_device *udev, u16 index)
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{
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int data, ret;
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u8 shift = index & 2;
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index &= ~3;
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ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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RTL815x_REQ_GET_REGS, RTL815x_REQT_READ,
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index, MCU_TYPE_PLA, &data, sizeof(data), 500);
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if (ret < 0)
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return ret;
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data = __le32_to_cpu(data);
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data >>= (shift * 8);
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data &= 0xffff;
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return data;
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}
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static int pla_write_word(struct usb_device *udev, u16 index, u32 data)
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{
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u32 tmp, mask = 0xffff;
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u16 byen = BYTE_EN_WORD;
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u8 shift = index & 2;
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int ret;
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data &= mask;
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if (shift) {
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byen <<= shift;
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mask <<= (shift * 8);
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data <<= (shift * 8);
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index &= ~3;
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}
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ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
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RTL815x_REQ_GET_REGS, RTL815x_REQT_READ,
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index, MCU_TYPE_PLA, &tmp, sizeof(tmp), 500);
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if (ret < 0)
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return ret;
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tmp = __le32_to_cpu(tmp) & ~mask;
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tmp |= data;
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tmp = __cpu_to_le32(tmp);
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ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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RTL815x_REQ_SET_REGS, RTL815x_REQT_WRITE,
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index, MCU_TYPE_PLA | byen, &tmp,
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sizeof(tmp), 500);
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return ret;
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}
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static int ocp_reg_read(struct usbnet *dev, u16 addr)
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{
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u16 ocp_base, ocp_index;
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int ret;
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ocp_base = addr & 0xf000;
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ret = pla_write_word(dev->udev, OCP_BASE, ocp_base);
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if (ret < 0)
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goto out;
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ocp_index = (addr & 0x0fff) | 0xb000;
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ret = pla_read_word(dev->udev, ocp_index);
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out:
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return ret;
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}
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static int ocp_reg_write(struct usbnet *dev, u16 addr, u16 data)
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{
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u16 ocp_base, ocp_index;
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int ret;
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ocp_base = addr & 0xf000;
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ret = pla_write_word(dev->udev, OCP_BASE, ocp_base);
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if (ret < 0)
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goto out1;
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ocp_index = (addr & 0x0fff) | 0xb000;
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ret = pla_write_word(dev->udev, ocp_index, data);
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out1:
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return ret;
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}
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static int r815x_mdio_read(struct net_device *netdev, int phy_id, int reg)
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{
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struct usbnet *dev = netdev_priv(netdev);
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if (phy_id != R815x_PHY_ID)
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return -EINVAL;
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return ocp_reg_read(dev, BASE_MII + reg * 2);
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}
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static
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void r815x_mdio_write(struct net_device *netdev, int phy_id, int reg, int val)
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{
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struct usbnet *dev = netdev_priv(netdev);
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if (phy_id != R815x_PHY_ID)
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return;
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ocp_reg_write(dev, BASE_MII + reg * 2, val);
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}
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static int r8153_bind(struct usbnet *dev, struct usb_interface *intf)
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{
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int status;
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status = usbnet_cdc_bind(dev, intf);
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if (status < 0)
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return status;
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dev->mii.dev = dev->net;
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dev->mii.mdio_read = r815x_mdio_read;
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dev->mii.mdio_write = r815x_mdio_write;
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dev->mii.phy_id_mask = 0x3f;
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dev->mii.reg_num_mask = 0x1f;
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dev->mii.phy_id = R815x_PHY_ID;
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dev->mii.supports_gmii = 1;
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return 0;
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}
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static int r8152_bind(struct usbnet *dev, struct usb_interface *intf)
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{
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int status;
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status = usbnet_cdc_bind(dev, intf);
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if (status < 0)
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return status;
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dev->mii.dev = dev->net;
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dev->mii.mdio_read = r815x_mdio_read;
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dev->mii.mdio_write = r815x_mdio_write;
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dev->mii.phy_id_mask = 0x3f;
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dev->mii.reg_num_mask = 0x1f;
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dev->mii.phy_id = R815x_PHY_ID;
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dev->mii.supports_gmii = 0;
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return 0;
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}
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static const struct driver_info r8152_info = {
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.description = "RTL8152 ECM Device",
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.flags = FLAG_ETHER | FLAG_POINTTOPOINT,
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.bind = r8152_bind,
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.unbind = usbnet_cdc_unbind,
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.status = usbnet_cdc_status,
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.manage_power = usbnet_manage_power,
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};
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static const struct driver_info r8153_info = {
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.description = "RTL8153 ECM Device",
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.flags = FLAG_ETHER | FLAG_POINTTOPOINT,
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.bind = r8153_bind,
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.unbind = usbnet_cdc_unbind,
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.status = usbnet_cdc_status,
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.manage_power = usbnet_manage_power,
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};
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static const struct usb_device_id products[] = {
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{
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USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
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USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
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#if defined(CONFIG_USB_RTL8152) || defined(CONFIG_USB_RTL8152_MODULE)
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.driver_info = 0,
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#else
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.driver_info = (unsigned long) &r8152_info,
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#endif
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},
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{
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USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
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USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
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#if defined(CONFIG_USB_RTL8153) || defined(CONFIG_USB_RTL8153_MODULE)
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.driver_info = 0,
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#else
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.driver_info = (unsigned long) &r8153_info,
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#endif
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},
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{ }, /* END */
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};
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MODULE_DEVICE_TABLE(usb, products);
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static struct usb_driver r815x_driver = {
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.name = "r815x",
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.id_table = products,
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.probe = usbnet_probe,
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.disconnect = usbnet_disconnect,
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.suspend = usbnet_suspend,
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.resume = usbnet_resume,
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.reset_resume = usbnet_resume,
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.supports_autosuspend = 1,
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.disable_hub_initiated_lpm = 1,
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};
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module_usb_driver(r815x_driver);
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MODULE_AUTHOR("Hayes Wang");
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MODULE_DESCRIPTION("Realtek USB ECM device");
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MODULE_LICENSE("GPL");
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