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Mon, 22 Sep 2025 19:22:24 -0700 (PDT) Received: from debian.domain.name ([223.181.114.100]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-27cc8b251f7sm5636835ad.8.2025.09.22.19.22.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Sep 2025 19:22:23 -0700 (PDT) From: I Viswanath To: petkan@nucleusys.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: linux-usb@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev, david.hunter.linux@gmail.com, I Viswanath Subject: [PATCH net] net: usb: remove rtl8150 driver Date: Tue, 23 Sep 2025 07:52:05 +0530 Message-ID: <20250923022205.9075-1-viswanathiyyappan@gmail.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Remove the rtl8150 driver, as the most recent device ID was added on 2006-12-04 Signed-off-by: I Viswanath --- Link to the relevant conversation: https://lore.kernel.org/netdev/202509221= 80742.6ef6e2d5@kernel.org/ =20 MAINTAINERS | 9 - drivers/net/usb/rtl8150.c | 980 -------------------------------------- 2 files changed, 989 deletions(-) delete mode 100644 drivers/net/usb/rtl8150.c diff --git a/MAINTAINERS b/MAINTAINERS index e94d68c980c5..3d41757da906 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -26150,15 +26150,6 @@ F: Documentation/usb/raw-gadget.rst F: drivers/usb/gadget/legacy/raw_gadget.c F: include/uapi/linux/usb/raw_gadget.h =20 -USB RTL8150 DRIVER -M: Petko Manolov -L: linux-usb@vger.kernel.org -L: netdev@vger.kernel.org -S: Maintained -W: https://github.com/petkan/rtl8150 -T: git https://github.com/petkan/rtl8150.git -F: drivers/net/usb/rtl8150.c - USB SERIAL SUBSYSTEM M: Johan Hovold L: linux-usb@vger.kernel.org diff --git a/drivers/net/usb/rtl8150.c b/drivers/net/usb/rtl8150.c deleted file mode 100644 index ddff6f19ff98..000000000000 --- a/drivers/net/usb/rtl8150.c +++ /dev/null @@ -1,980 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net) - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* Version Information */ -#define DRIVER_VERSION "v0.6.2 (2004/08/27)" -#define DRIVER_AUTHOR "Petko Manolov " -#define DRIVER_DESC "rtl8150 based usb-ethernet driver" - -#define IDR 0x0120 -#define MAR 0x0126 -#define CR 0x012e -#define TCR 0x012f -#define RCR 0x0130 -#define TSR 0x0132 -#define RSR 0x0133 -#define CON0 0x0135 -#define CON1 0x0136 -#define MSR 0x0137 -#define PHYADD 0x0138 -#define PHYDAT 0x0139 -#define PHYCNT 0x013b -#define GPPC 0x013d -#define BMCR 0x0140 -#define BMSR 0x0142 -#define ANAR 0x0144 -#define ANLP 0x0146 -#define AER 0x0148 -#define CSCR 0x014C /* This one has the link status */ -#define CSCR_LINK_STATUS (1 << 3) - -#define IDR_EEPROM 0x1202 - -#define PHY_READ 0 -#define PHY_WRITE 0x20 -#define PHY_GO 0x40 - -#define MII_TIMEOUT 10 -#define INTBUFSIZE 8 - -#define RTL8150_REQT_READ 0xc0 -#define RTL8150_REQT_WRITE 0x40 -#define RTL8150_REQ_GET_REGS 0x05 -#define RTL8150_REQ_SET_REGS 0x05 - - -/* Transmit status register errors */ -#define TSR_ECOL (1<<5) -#define TSR_LCOL (1<<4) -#define TSR_LOSS_CRS (1<<3) -#define TSR_JBR (1<<2) -#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) -/* Receive status register errors */ -#define RSR_CRC (1<<2) -#define RSR_FAE (1<<1) -#define RSR_ERRORS (RSR_CRC | RSR_FAE) - -/* Media status register definitions */ -#define MSR_DUPLEX (1<<4) -#define MSR_SPEED (1<<3) -#define MSR_LINK (1<<2) - -/* USB endpoints */ -enum rtl8150_usb_ep { - RTL8150_USB_EP_CONTROL =3D 0, - RTL8150_USB_EP_BULK_IN =3D 1, - RTL8150_USB_EP_BULK_OUT =3D 2, - RTL8150_USB_EP_INT_IN =3D 3, -}; - -/* Interrupt pipe data */ -#define INT_TSR 0x00 -#define INT_RSR 0x01 -#define INT_MSR 0x02 -#define INT_WAKSR 0x03 -#define INT_TXOK_CNT 0x04 -#define INT_RXLOST_CNT 0x05 -#define INT_CRERR_CNT 0x06 -#define INT_COL_CNT 0x07 - - -#define RTL8150_MTU 1540 -#define RTL8150_TX_TIMEOUT (HZ) -#define RX_SKB_POOL_SIZE 4 - -/* rtl8150 flags */ -#define RTL8150_HW_CRC 0 -#define RX_REG_SET 1 -#define RTL8150_UNPLUG 2 -#define RX_URB_FAIL 3 - -/* Define these values to match your device */ -#define VENDOR_ID_REALTEK 0x0bda -#define VENDOR_ID_MELCO 0x0411 -#define VENDOR_ID_MICRONET 0x3980 -#define VENDOR_ID_LONGSHINE 0x07b8 -#define VENDOR_ID_OQO 0x1557 -#define VENDOR_ID_ZYXEL 0x0586 - -#define PRODUCT_ID_RTL8150 0x8150 -#define PRODUCT_ID_LUAKTX 0x0012 -#define PRODUCT_ID_LCS8138TX 0x401a -#define PRODUCT_ID_SP128AR 0x0003 -#define PRODUCT_ID_PRESTIGE 0x401a - -#undef EEPROM_WRITE - -/* table of devices that work with this driver */ -static const struct usb_device_id rtl8150_table[] =3D { - {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, - {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, - {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, - {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, - {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, - {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, - {} -}; - -MODULE_DEVICE_TABLE(usb, rtl8150_table); - -struct rtl8150 { - unsigned long flags; - struct usb_device *udev; - struct tasklet_struct tl; - struct net_device *netdev; - struct urb *rx_urb, *tx_urb, *intr_urb; - struct sk_buff *tx_skb, *rx_skb; - struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; - spinlock_t rx_pool_lock; - struct usb_ctrlrequest dr; - int intr_interval; - u8 *intr_buff; - u8 phy; -}; - -typedef struct rtl8150 rtl8150_t; - -struct async_req { - struct usb_ctrlrequest dr; - u16 rx_creg; -}; - -static const char driver_name [] =3D "rtl8150"; - -/* -** -** device related part of the code -** -*/ -static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) -{ - return usb_control_msg_recv(dev->udev, 0, RTL8150_REQ_GET_REGS, - RTL8150_REQT_READ, indx, 0, data, size, - 1000, GFP_NOIO); -} - -static int set_registers(rtl8150_t * dev, u16 indx, u16 size, const void *= data) -{ - return usb_control_msg_send(dev->udev, 0, RTL8150_REQ_SET_REGS, - RTL8150_REQT_WRITE, indx, 0, data, size, - 1000, GFP_NOIO); -} - -static void async_set_reg_cb(struct urb *urb) -{ - struct async_req *req =3D (struct async_req *)urb->context; - int status =3D urb->status; - - if (status < 0) - dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); - kfree(req); - usb_free_urb(urb); -} - -static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) -{ - int res =3D -ENOMEM; - struct urb *async_urb; - struct async_req *req; - - req =3D kmalloc(sizeof(struct async_req), GFP_ATOMIC); - if (req =3D=3D NULL) - return res; - async_urb =3D usb_alloc_urb(0, GFP_ATOMIC); - if (async_urb =3D=3D NULL) { - kfree(req); - return res; - } - req->rx_creg =3D cpu_to_le16(reg); - req->dr.bRequestType =3D RTL8150_REQT_WRITE; - req->dr.bRequest =3D RTL8150_REQ_SET_REGS; - req->dr.wIndex =3D 0; - req->dr.wValue =3D cpu_to_le16(indx); - req->dr.wLength =3D cpu_to_le16(size); - usb_fill_control_urb(async_urb, dev->udev, - usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, - &req->rx_creg, size, async_set_reg_cb, req); - res =3D usb_submit_urb(async_urb, GFP_ATOMIC); - if (res) { - if (res =3D=3D -ENODEV) - netif_device_detach(dev->netdev); - dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); - } - return res; -} - -static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) -{ - int i; - u8 data[3], tmp; - - data[0] =3D phy; - data[1] =3D data[2] =3D 0; - tmp =3D indx | PHY_READ | PHY_GO; - i =3D 0; - - set_registers(dev, PHYADD, sizeof(data), data); - set_registers(dev, PHYCNT, 1, &tmp); - do { - get_registers(dev, PHYCNT, 1, data); - } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); - - if (i <=3D MII_TIMEOUT) { - get_registers(dev, PHYDAT, 2, data); - *reg =3D data[0] | (data[1] << 8); - return 0; - } else - return 1; -} - -static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) -{ - int i; - u8 data[3], tmp; - - data[0] =3D phy; - data[1] =3D reg & 0xff; - data[2] =3D (reg >> 8) & 0xff; - tmp =3D indx | PHY_WRITE | PHY_GO; - i =3D 0; - - set_registers(dev, PHYADD, sizeof(data), data); - set_registers(dev, PHYCNT, 1, &tmp); - do { - get_registers(dev, PHYCNT, 1, data); - } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); - - if (i <=3D MII_TIMEOUT) - return 0; - else - return 1; -} - -static void set_ethernet_addr(rtl8150_t *dev) -{ - u8 node_id[ETH_ALEN]; - int ret; - - ret =3D get_registers(dev, IDR, sizeof(node_id), node_id); - - if (!ret) { - eth_hw_addr_set(dev->netdev, node_id); - } else { - eth_hw_addr_random(dev->netdev); - netdev_notice(dev->netdev, "Assigned a random MAC address: %pM\n", - dev->netdev->dev_addr); - } -} - -static int rtl8150_set_mac_address(struct net_device *netdev, void *p) -{ - struct sockaddr *addr =3D p; - rtl8150_t *dev =3D netdev_priv(netdev); - - if (netif_running(netdev)) - return -EBUSY; - - eth_hw_addr_set(netdev, addr->sa_data); - netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); - /* Set the IDR registers. */ - set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); -#ifdef EEPROM_WRITE - { - int i; - u8 cr; - /* Get the CR contents. */ - get_registers(dev, CR, 1, &cr); - /* Set the WEPROM bit (eeprom write enable). */ - cr |=3D 0x20; - set_registers(dev, CR, 1, &cr); - /* Write the MAC address into eeprom. Eeprom writes must be word-sized, - so we need to split them up. */ - for (i =3D 0; i * 2 < netdev->addr_len; i++) { - set_registers(dev, IDR_EEPROM + (i * 2), 2, - netdev->dev_addr + (i * 2)); - } - /* Clear the WEPROM bit (preventing accidental eeprom writes). */ - cr &=3D 0xdf; - set_registers(dev, CR, 1, &cr); - } -#endif - return 0; -} - -static int rtl8150_reset(rtl8150_t * dev) -{ - u8 data =3D 0x10; - int i =3D HZ; - - set_registers(dev, CR, 1, &data); - do { - get_registers(dev, CR, 1, &data); - } while ((data & 0x10) && --i); - - return (i > 0) ? 1 : 0; -} - -static int alloc_all_urbs(rtl8150_t * dev) -{ - dev->rx_urb =3D usb_alloc_urb(0, GFP_KERNEL); - if (!dev->rx_urb) - return 0; - dev->tx_urb =3D usb_alloc_urb(0, GFP_KERNEL); - if (!dev->tx_urb) { - usb_free_urb(dev->rx_urb); - return 0; - } - dev->intr_urb =3D usb_alloc_urb(0, GFP_KERNEL); - if (!dev->intr_urb) { - usb_free_urb(dev->rx_urb); - usb_free_urb(dev->tx_urb); - return 0; - } - - return 1; -} - -static void free_all_urbs(rtl8150_t * dev) -{ - usb_free_urb(dev->rx_urb); - usb_free_urb(dev->tx_urb); - usb_free_urb(dev->intr_urb); -} - -static void unlink_all_urbs(rtl8150_t * dev) -{ - usb_kill_urb(dev->rx_urb); - usb_kill_urb(dev->tx_urb); - usb_kill_urb(dev->intr_urb); -} - -static inline struct sk_buff *pull_skb(rtl8150_t *dev) -{ - struct sk_buff *skb; - int i; - - for (i =3D 0; i < RX_SKB_POOL_SIZE; i++) { - if (dev->rx_skb_pool[i]) { - skb =3D dev->rx_skb_pool[i]; - dev->rx_skb_pool[i] =3D NULL; - return skb; - } - } - return NULL; -} - -static void read_bulk_callback(struct urb *urb) -{ - rtl8150_t *dev; - unsigned pkt_len, res; - struct sk_buff *skb; - struct net_device *netdev; - int status =3D urb->status; - int result; - unsigned long flags; - - dev =3D urb->context; - if (!dev) - return; - if (test_bit(RTL8150_UNPLUG, &dev->flags)) - return; - netdev =3D dev->netdev; - if (!netif_device_present(netdev)) - return; - - switch (status) { - case 0: - break; - case -ENOENT: - return; /* the urb is in unlink state */ - case -ETIME: - if (printk_ratelimit()) - dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); - goto goon; - default: - if (printk_ratelimit()) - dev_warn(&urb->dev->dev, "Rx status %d\n", status); - goto goon; - } - - if (!dev->rx_skb) - goto resched; - /* protect against short packets (tell me why we got some?!?) */ - if (urb->actual_length < 4) - goto goon; - - res =3D urb->actual_length; - pkt_len =3D res - 4; - - skb_put(dev->rx_skb, pkt_len); - dev->rx_skb->protocol =3D eth_type_trans(dev->rx_skb, netdev); - netif_rx(dev->rx_skb); - netdev->stats.rx_packets++; - netdev->stats.rx_bytes +=3D pkt_len; - - spin_lock_irqsave(&dev->rx_pool_lock, flags); - skb =3D pull_skb(dev); - spin_unlock_irqrestore(&dev->rx_pool_lock, flags); - if (!skb) - goto resched; - - dev->rx_skb =3D skb; -goon: - usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), - dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); - result =3D usb_submit_urb(dev->rx_urb, GFP_ATOMIC); - if (result =3D=3D -ENODEV) - netif_device_detach(dev->netdev); - else if (result) { - set_bit(RX_URB_FAIL, &dev->flags); - goto resched; - } else { - clear_bit(RX_URB_FAIL, &dev->flags); - } - - return; -resched: - tasklet_schedule(&dev->tl); -} - -static void write_bulk_callback(struct urb *urb) -{ - rtl8150_t *dev; - int status =3D urb->status; - - dev =3D urb->context; - if (!dev) - return; - dev_kfree_skb_irq(dev->tx_skb); - if (!netif_device_present(dev->netdev)) - return; - if (status) - dev_info(&urb->dev->dev, "%s: Tx status %d\n", - dev->netdev->name, status); - netif_trans_update(dev->netdev); - netif_wake_queue(dev->netdev); -} - -static void intr_callback(struct urb *urb) -{ - rtl8150_t *dev; - __u8 *d; - int status =3D urb->status; - int res; - - dev =3D urb->context; - if (!dev) - return; - switch (status) { - case 0: /* success */ - break; - case -ECONNRESET: /* unlink */ - case -ENOENT: - case -ESHUTDOWN: - return; - /* -EPIPE: should clear the halt */ - default: - dev_info(&urb->dev->dev, "%s: intr status %d\n", - dev->netdev->name, status); - goto resubmit; - } - - d =3D urb->transfer_buffer; - if (d[0] & TSR_ERRORS) { - dev->netdev->stats.tx_errors++; - if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) - dev->netdev->stats.tx_aborted_errors++; - if (d[INT_TSR] & TSR_LCOL) - dev->netdev->stats.tx_window_errors++; - if (d[INT_TSR] & TSR_LOSS_CRS) - dev->netdev->stats.tx_carrier_errors++; - } - /* Report link status changes to the network stack */ - if ((d[INT_MSR] & MSR_LINK) =3D=3D 0) { - if (netif_carrier_ok(dev->netdev)) { - netif_carrier_off(dev->netdev); - netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); - } - } else { - if (!netif_carrier_ok(dev->netdev)) { - netif_carrier_on(dev->netdev); - netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); - } - } - -resubmit: - res =3D usb_submit_urb (urb, GFP_ATOMIC); - if (res =3D=3D -ENODEV) - netif_device_detach(dev->netdev); - else if (res) - dev_err(&dev->udev->dev, - "can't resubmit intr, %s-%s/input0, status %d\n", - dev->udev->bus->bus_name, dev->udev->devpath, res); -} - -static int rtl8150_suspend(struct usb_interface *intf, pm_message_t messag= e) -{ - rtl8150_t *dev =3D usb_get_intfdata(intf); - - netif_device_detach(dev->netdev); - - if (netif_running(dev->netdev)) { - usb_kill_urb(dev->rx_urb); - usb_kill_urb(dev->intr_urb); - } - return 0; -} - -static int rtl8150_resume(struct usb_interface *intf) -{ - rtl8150_t *dev =3D usb_get_intfdata(intf); - - netif_device_attach(dev->netdev); - if (netif_running(dev->netdev)) { - dev->rx_urb->status =3D 0; - dev->rx_urb->actual_length =3D 0; - read_bulk_callback(dev->rx_urb); - - dev->intr_urb->status =3D 0; - dev->intr_urb->actual_length =3D 0; - intr_callback(dev->intr_urb); - } - return 0; -} - -/* -** -** network related part of the code -** -*/ - -static void fill_skb_pool(rtl8150_t *dev) -{ - struct sk_buff *skb; - int i; - - for (i =3D 0; i < RX_SKB_POOL_SIZE; i++) { - if (dev->rx_skb_pool[i]) - continue; - skb =3D dev_alloc_skb(RTL8150_MTU + 2); - if (!skb) { - return; - } - skb_reserve(skb, 2); - dev->rx_skb_pool[i] =3D skb; - } -} - -static void free_skb_pool(rtl8150_t *dev) -{ - int i; - - for (i =3D 0; i < RX_SKB_POOL_SIZE; i++) - dev_kfree_skb(dev->rx_skb_pool[i]); -} - -static void rx_fixup(struct tasklet_struct *t) -{ - struct rtl8150 *dev =3D from_tasklet(dev, t, tl); - struct sk_buff *skb; - int status; - - spin_lock_irq(&dev->rx_pool_lock); - fill_skb_pool(dev); - spin_unlock_irq(&dev->rx_pool_lock); - if (test_bit(RX_URB_FAIL, &dev->flags)) - if (dev->rx_skb) - goto try_again; - spin_lock_irq(&dev->rx_pool_lock); - skb =3D pull_skb(dev); - spin_unlock_irq(&dev->rx_pool_lock); - if (skb =3D=3D NULL) - goto tlsched; - dev->rx_skb =3D skb; - usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), - dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); -try_again: - status =3D usb_submit_urb(dev->rx_urb, GFP_ATOMIC); - if (status =3D=3D -ENODEV) { - netif_device_detach(dev->netdev); - } else if (status) { - set_bit(RX_URB_FAIL, &dev->flags); - goto tlsched; - } else { - clear_bit(RX_URB_FAIL, &dev->flags); - } - - return; -tlsched: - tasklet_schedule(&dev->tl); -} - -static int enable_net_traffic(rtl8150_t * dev) -{ - u8 cr, tcr, rcr, msr; - - if (!rtl8150_reset(dev)) { - dev_warn(&dev->udev->dev, "device reset failed\n"); - } - /* RCR bit7=3D1 attach Rx info at the end; =3D0 HW CRC (which is broken)= */ - rcr =3D 0x9e; - tcr =3D 0xd8; - cr =3D 0x0c; - if (!(rcr & 0x80)) - set_bit(RTL8150_HW_CRC, &dev->flags); - set_registers(dev, RCR, 1, &rcr); - set_registers(dev, TCR, 1, &tcr); - set_registers(dev, CR, 1, &cr); - get_registers(dev, MSR, 1, &msr); - - return 0; -} - -static void disable_net_traffic(rtl8150_t * dev) -{ - u8 cr; - - get_registers(dev, CR, 1, &cr); - cr &=3D 0xf3; - set_registers(dev, CR, 1, &cr); -} - -static void rtl8150_tx_timeout(struct net_device *netdev, unsigned int txq= ueue) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - dev_warn(&netdev->dev, "Tx timeout.\n"); - usb_unlink_urb(dev->tx_urb); - netdev->stats.tx_errors++; -} - -static void rtl8150_set_multicast(struct net_device *netdev) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - u16 rx_creg =3D 0x9e; - - netif_stop_queue(netdev); - if (netdev->flags & IFF_PROMISC) { - rx_creg |=3D 0x0001; - dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); - } else if (!netdev_mc_empty(netdev) || - (netdev->flags & IFF_ALLMULTI)) { - rx_creg &=3D 0xfffe; - rx_creg |=3D 0x0002; - dev_dbg(&netdev->dev, "%s: allmulti set\n", netdev->name); - } else { - /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ - rx_creg &=3D 0x00fc; - } - async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); - netif_wake_queue(netdev); -} - -static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, - struct net_device *netdev) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - int count, res; - - netif_stop_queue(netdev); - count =3D (skb->len < 60) ? 60 : skb->len; - count =3D (count & 0x3f) ? count : count + 1; - dev->tx_skb =3D skb; - usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), - skb->data, count, write_bulk_callback, dev); - if ((res =3D usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { - /* Can we get/handle EPIPE here? */ - if (res =3D=3D -ENODEV) - netif_device_detach(dev->netdev); - else { - dev_warn(&netdev->dev, "failed tx_urb %d\n", res); - netdev->stats.tx_errors++; - netif_start_queue(netdev); - } - } else { - netdev->stats.tx_packets++; - netdev->stats.tx_bytes +=3D skb->len; - netif_trans_update(netdev); - } - - return NETDEV_TX_OK; -} - - -static void set_carrier(struct net_device *netdev) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - short tmp; - - get_registers(dev, CSCR, 2, &tmp); - if (tmp & CSCR_LINK_STATUS) - netif_carrier_on(netdev); - else - netif_carrier_off(netdev); -} - -static int rtl8150_open(struct net_device *netdev) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - int res; - - if (dev->rx_skb =3D=3D NULL) - dev->rx_skb =3D pull_skb(dev); - if (!dev->rx_skb) - return -ENOMEM; - - set_registers(dev, IDR, 6, netdev->dev_addr); - - usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), - dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); - if ((res =3D usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { - if (res =3D=3D -ENODEV) - netif_device_detach(dev->netdev); - dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); - return res; - } - usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), - dev->intr_buff, INTBUFSIZE, intr_callback, - dev, dev->intr_interval); - if ((res =3D usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { - if (res =3D=3D -ENODEV) - netif_device_detach(dev->netdev); - dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); - usb_kill_urb(dev->rx_urb); - return res; - } - enable_net_traffic(dev); - set_carrier(netdev); - netif_start_queue(netdev); - - return res; -} - -static int rtl8150_close(struct net_device *netdev) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - - netif_stop_queue(netdev); - if (!test_bit(RTL8150_UNPLUG, &dev->flags)) - disable_net_traffic(dev); - unlink_all_urbs(dev); - - return 0; -} - -static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_= drvinfo *info) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - - strscpy(info->driver, driver_name, sizeof(info->driver)); - strscpy(info->version, DRIVER_VERSION, sizeof(info->version)); - usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); -} - -static int rtl8150_get_link_ksettings(struct net_device *netdev, - struct ethtool_link_ksettings *ecmd) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - short lpa =3D 0; - short bmcr =3D 0; - u32 supported; - - supported =3D (SUPPORTED_10baseT_Half | - SUPPORTED_10baseT_Full | - SUPPORTED_100baseT_Half | - SUPPORTED_100baseT_Full | - SUPPORTED_Autoneg | - SUPPORTED_TP | SUPPORTED_MII); - ecmd->base.port =3D PORT_TP; - ecmd->base.phy_address =3D dev->phy; - get_registers(dev, BMCR, 2, &bmcr); - get_registers(dev, ANLP, 2, &lpa); - if (bmcr & BMCR_ANENABLE) { - u32 speed =3D ((lpa & (LPA_100HALF | LPA_100FULL)) ? - SPEED_100 : SPEED_10); - ecmd->base.speed =3D speed; - ecmd->base.autoneg =3D AUTONEG_ENABLE; - if (speed =3D=3D SPEED_100) - ecmd->base.duplex =3D (lpa & LPA_100FULL) ? - DUPLEX_FULL : DUPLEX_HALF; - else - ecmd->base.duplex =3D (lpa & LPA_10FULL) ? - DUPLEX_FULL : DUPLEX_HALF; - } else { - ecmd->base.autoneg =3D AUTONEG_DISABLE; - ecmd->base.speed =3D ((bmcr & BMCR_SPEED100) ? - SPEED_100 : SPEED_10); - ecmd->base.duplex =3D (bmcr & BMCR_FULLDPLX) ? - DUPLEX_FULL : DUPLEX_HALF; - } - - ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported, - supported); - - return 0; -} - -static const struct ethtool_ops ops =3D { - .get_drvinfo =3D rtl8150_get_drvinfo, - .get_link =3D ethtool_op_get_link, - .get_link_ksettings =3D rtl8150_get_link_ksettings, -}; - -static int rtl8150_siocdevprivate(struct net_device *netdev, struct ifreq = *rq, - void __user *udata, int cmd) -{ - rtl8150_t *dev =3D netdev_priv(netdev); - u16 *data =3D (u16 *) & rq->ifr_ifru; - int res =3D 0; - - switch (cmd) { - case SIOCDEVPRIVATE: - data[0] =3D dev->phy; - fallthrough; - case SIOCDEVPRIVATE + 1: - read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); - break; - case SIOCDEVPRIVATE + 2: - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); - break; - default: - res =3D -EOPNOTSUPP; - } - - return res; -} - -static const struct net_device_ops rtl8150_netdev_ops =3D { - .ndo_open =3D rtl8150_open, - .ndo_stop =3D rtl8150_close, - .ndo_siocdevprivate =3D rtl8150_siocdevprivate, - .ndo_start_xmit =3D rtl8150_start_xmit, - .ndo_tx_timeout =3D rtl8150_tx_timeout, - .ndo_set_rx_mode =3D rtl8150_set_multicast, - .ndo_set_mac_address =3D rtl8150_set_mac_address, - - .ndo_validate_addr =3D eth_validate_addr, -}; - -static int rtl8150_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct usb_device *udev =3D interface_to_usbdev(intf); - rtl8150_t *dev; - struct net_device *netdev; - static const u8 bulk_ep_addr[] =3D { - RTL8150_USB_EP_BULK_IN | USB_DIR_IN, - RTL8150_USB_EP_BULK_OUT | USB_DIR_OUT, - 0}; - static const u8 int_ep_addr[] =3D { - RTL8150_USB_EP_INT_IN | USB_DIR_IN, - 0}; - - netdev =3D alloc_etherdev(sizeof(rtl8150_t)); - if (!netdev) - return -ENOMEM; - - dev =3D netdev_priv(netdev); - - dev->intr_buff =3D kmalloc(INTBUFSIZE, GFP_KERNEL); - if (!dev->intr_buff) { - free_netdev(netdev); - return -ENOMEM; - } - - /* Verify that all required endpoints are present */ - if (!usb_check_bulk_endpoints(intf, bulk_ep_addr) || - !usb_check_int_endpoints(intf, int_ep_addr)) { - dev_err(&intf->dev, "couldn't find required endpoints\n"); - goto out; - } - - tasklet_setup(&dev->tl, rx_fixup); - spin_lock_init(&dev->rx_pool_lock); - - dev->udev =3D udev; - dev->netdev =3D netdev; - netdev->netdev_ops =3D &rtl8150_netdev_ops; - netdev->watchdog_timeo =3D RTL8150_TX_TIMEOUT; - netdev->ethtool_ops =3D &ops; - dev->intr_interval =3D 100; /* 100ms */ - - if (!alloc_all_urbs(dev)) { - dev_err(&intf->dev, "out of memory\n"); - goto out; - } - if (!rtl8150_reset(dev)) { - dev_err(&intf->dev, "couldn't reset the device\n"); - goto out1; - } - fill_skb_pool(dev); - set_ethernet_addr(dev); - - usb_set_intfdata(intf, dev); - SET_NETDEV_DEV(netdev, &intf->dev); - if (register_netdev(netdev) !=3D 0) { - dev_err(&intf->dev, "couldn't register the device\n"); - goto out2; - } - - dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); - - return 0; - -out2: - usb_set_intfdata(intf, NULL); - free_skb_pool(dev); -out1: - free_all_urbs(dev); -out: - kfree(dev->intr_buff); - free_netdev(netdev); - return -EIO; -} - -static void rtl8150_disconnect(struct usb_interface *intf) -{ - rtl8150_t *dev =3D usb_get_intfdata(intf); - - usb_set_intfdata(intf, NULL); - if (dev) { - set_bit(RTL8150_UNPLUG, &dev->flags); - tasklet_kill(&dev->tl); - unregister_netdev(dev->netdev); - unlink_all_urbs(dev); - free_all_urbs(dev); - free_skb_pool(dev); - dev_kfree_skb(dev->rx_skb); - kfree(dev->intr_buff); - free_netdev(dev->netdev); - } -} - -static struct usb_driver rtl8150_driver =3D { - .name =3D driver_name, - .probe =3D rtl8150_probe, - .disconnect =3D rtl8150_disconnect, - .id_table =3D rtl8150_table, - .suspend =3D rtl8150_suspend, - .resume =3D rtl8150_resume, - .disable_hub_initiated_lpm =3D 1, -}; - -module_usb_driver(rtl8150_driver); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); --=20 2.47.3