From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/net/usb/asix_common.c | 781 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 781 insertions(+) create mode 100644 drivers/net/usb/asix_common.c (limited to 'drivers/net/usb/asix_common.c') diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c new file mode 100644 index 000000000..72ffc89b4 --- /dev/null +++ b/drivers/net/usb/asix_common.c @@ -0,0 +1,781 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * ASIX AX8817X based USB 2.0 Ethernet Devices + * Copyright (C) 2003-2006 David Hollis + * Copyright (C) 2005 Phil Chang + * Copyright (C) 2006 James Painter + * Copyright (c) 2002-2003 TiVo Inc. + */ + +#include "asix.h" + +#define AX_HOST_EN_RETRIES 30 + +int __must_check asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data, int in_pm) +{ + int ret; + int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); + + BUG_ON(!dev); + + if (!in_pm) + fn = usbnet_read_cmd; + else + fn = usbnet_read_cmd_nopm; + + ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, index, data, size); + + if (unlikely(ret < size)) { + ret = ret < 0 ? ret : -ENODATA; + + netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n", + index, ret); + } + + return ret; +} + +int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data, int in_pm) +{ + int ret; + int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); + + BUG_ON(!dev); + + if (!in_pm) + fn = usbnet_write_cmd; + else + fn = usbnet_write_cmd_nopm; + + ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, index, data, size); + + if (unlikely(ret < 0)) + netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n", + index, ret); + + return ret; +} + +void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data) +{ + usbnet_write_cmd_async(dev, cmd, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, index, data, size); +} + +static int asix_set_sw_mii(struct usbnet *dev, int in_pm) +{ + int ret; + + ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm); + + if (ret < 0) + netdev_err(dev->net, "Failed to enable software MII access\n"); + return ret; +} + +static int asix_set_hw_mii(struct usbnet *dev, int in_pm) +{ + int ret; + + ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm); + if (ret < 0) + netdev_err(dev->net, "Failed to enable hardware MII access\n"); + return ret; +} + +static int asix_check_host_enable(struct usbnet *dev, int in_pm) +{ + int i, ret; + u8 smsr; + + for (i = 0; i < AX_HOST_EN_RETRIES; ++i) { + ret = asix_set_sw_mii(dev, in_pm); + if (ret == -ENODEV || ret == -ETIMEDOUT) + break; + usleep_range(1000, 1100); + ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, + 0, 0, 1, &smsr, in_pm); + if (ret == -ENODEV) + break; + else if (ret < 0) + continue; + else if (smsr & AX_HOST_EN) + break; + } + + return i >= AX_HOST_EN_RETRIES ? -ETIMEDOUT : ret; +} + +static void reset_asix_rx_fixup_info(struct asix_rx_fixup_info *rx) +{ + /* Reset the variables that have a lifetime outside of + * asix_rx_fixup_internal() so that future processing starts from a + * known set of initial conditions. + */ + + if (rx->ax_skb) { + /* Discard any incomplete Ethernet frame in the netdev buffer */ + kfree_skb(rx->ax_skb); + rx->ax_skb = NULL; + } + + /* Assume the Data header 32-bit word is at the start of the current + * or next URB socket buffer so reset all the state variables. + */ + rx->remaining = 0; + rx->split_head = false; + rx->header = 0; +} + +int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb, + struct asix_rx_fixup_info *rx) +{ + int offset = 0; + u16 size; + + /* When an Ethernet frame spans multiple URB socket buffers, + * do a sanity test for the Data header synchronisation. + * Attempt to detect the situation of the previous socket buffer having + * been truncated or a socket buffer was missing. These situations + * cause a discontinuity in the data stream and therefore need to avoid + * appending bad data to the end of the current netdev socket buffer. + * Also avoid unnecessarily discarding a good current netdev socket + * buffer. + */ + if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) { + offset = ((rx->remaining + 1) & 0xfffe); + rx->header = get_unaligned_le32(skb->data + offset); + offset = 0; + + size = (u16)(rx->header & 0x7ff); + if (size != ((~rx->header >> 16) & 0x7ff)) { + netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n", + rx->remaining); + reset_asix_rx_fixup_info(rx); + } + } + + while (offset + sizeof(u16) <= skb->len) { + u16 copy_length; + + if (!rx->remaining) { + if (skb->len - offset == sizeof(u16)) { + rx->header = get_unaligned_le16( + skb->data + offset); + rx->split_head = true; + offset += sizeof(u16); + break; + } + + if (rx->split_head == true) { + rx->header |= (get_unaligned_le16( + skb->data + offset) << 16); + rx->split_head = false; + offset += sizeof(u16); + } else { + rx->header = get_unaligned_le32(skb->data + + offset); + offset += sizeof(u32); + } + + /* take frame length from Data header 32-bit word */ + size = (u16)(rx->header & 0x7ff); + if (size != ((~rx->header >> 16) & 0x7ff)) { + netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n", + rx->header, offset); + reset_asix_rx_fixup_info(rx); + return 0; + } + if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) { + netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n", + size); + reset_asix_rx_fixup_info(rx); + return 0; + } + + /* Sometimes may fail to get a netdev socket buffer but + * continue to process the URB socket buffer so that + * synchronisation of the Ethernet frame Data header + * word is maintained. + */ + rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size); + + rx->remaining = size; + } + + if (rx->remaining > skb->len - offset) { + copy_length = skb->len - offset; + rx->remaining -= copy_length; + } else { + copy_length = rx->remaining; + rx->remaining = 0; + } + + if (rx->ax_skb) { + skb_put_data(rx->ax_skb, skb->data + offset, + copy_length); + if (!rx->remaining) { + usbnet_skb_return(dev, rx->ax_skb); + rx->ax_skb = NULL; + } + } + + offset += (copy_length + 1) & 0xfffe; + } + + if (skb->len != offset) { + netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n", + skb->len, offset); + reset_asix_rx_fixup_info(rx); + return 0; + } + + return 1; +} + +int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb) +{ + struct asix_common_private *dp = dev->driver_priv; + struct asix_rx_fixup_info *rx = &dp->rx_fixup_info; + + return asix_rx_fixup_internal(dev, skb, rx); +} + +void asix_rx_fixup_common_free(struct asix_common_private *dp) +{ + struct asix_rx_fixup_info *rx; + + if (!dp) + return; + + rx = &dp->rx_fixup_info; + + if (rx->ax_skb) { + kfree_skb(rx->ax_skb); + rx->ax_skb = NULL; + } +} + +struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb, + gfp_t flags) +{ + int padlen; + int headroom = skb_headroom(skb); + int tailroom = skb_tailroom(skb); + u32 packet_len; + u32 padbytes = 0xffff0000; + void *ptr; + + padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4; + + /* We need to push 4 bytes in front of frame (packet_len) + * and maybe add 4 bytes after the end (if padlen is 4) + * + * Avoid skb_copy_expand() expensive call, using following rules : + * - We are allowed to push 4 bytes in headroom if skb_header_cloned() + * is false (and if we have 4 bytes of headroom) + * - We are allowed to put 4 bytes at tail if skb_cloned() + * is false (and if we have 4 bytes of tailroom) + * + * TCP packets for example are cloned, but __skb_header_release() + * was called in tcp stack, allowing us to use headroom for our needs. + */ + if (!skb_header_cloned(skb) && + !(padlen && skb_cloned(skb)) && + headroom + tailroom >= 4 + padlen) { + /* following should not happen, but better be safe */ + if (headroom < 4 || + tailroom < padlen) { + skb->data = memmove(skb->head + 4, skb->data, skb->len); + skb_set_tail_pointer(skb, skb->len); + } + } else { + struct sk_buff *skb2; + + skb2 = skb_copy_expand(skb, 4, padlen, flags); + dev_kfree_skb_any(skb); + skb = skb2; + if (!skb) + return NULL; + } + + packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len; + ptr = skb_push(skb, 4); + put_unaligned_le32(packet_len, ptr); + + if (padlen) { + put_unaligned_le32(padbytes, skb_tail_pointer(skb)); + skb_put(skb, sizeof(padbytes)); + } + + usbnet_set_skb_tx_stats(skb, 1, 0); + return skb; +} + +int asix_read_phy_addr(struct usbnet *dev, bool internal) +{ + int ret, offset; + u8 buf[2]; + + ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0); + if (ret < 0) + goto error; + + if (ret < 2) { + ret = -EIO; + goto error; + } + + offset = (internal ? 1 : 0); + ret = buf[offset]; + + netdev_dbg(dev->net, "%s PHY address 0x%x\n", + internal ? "internal" : "external", ret); + + return ret; + +error: + netdev_err(dev->net, "Error reading PHY_ID register: %02x\n", ret); + + return ret; +} + +int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm) +{ + int ret; + + ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm); + if (ret < 0) + netdev_err(dev->net, "Failed to send software reset: %02x\n", ret); + + return ret; +} + +u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm) +{ + __le16 v; + int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm); + + if (ret < 0) { + netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret); + goto out; + } + ret = le16_to_cpu(v); +out: + return ret; +} + +int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm) +{ + int ret; + + netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode); + ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm); + if (ret < 0) + netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n", + mode, ret); + + return ret; +} + +u16 asix_read_medium_status(struct usbnet *dev, int in_pm) +{ + __le16 v; + int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, + 0, 0, 2, &v, in_pm); + + if (ret < 0) { + netdev_err(dev->net, "Error reading Medium Status register: %02x\n", + ret); + return ret; /* TODO: callers not checking for error ret */ + } + + return le16_to_cpu(v); + +} + +int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm) +{ + int ret; + + netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode); + ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, + mode, 0, 0, NULL, in_pm); + if (ret < 0) + netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n", + mode, ret); + + return ret; +} + +/* set MAC link settings according to information from phylib */ +void asix_adjust_link(struct net_device *netdev) +{ + struct phy_device *phydev = netdev->phydev; + struct usbnet *dev = netdev_priv(netdev); + u16 mode = 0; + + if (phydev->link) { + mode = AX88772_MEDIUM_DEFAULT; + + if (phydev->duplex == DUPLEX_HALF) + mode &= ~AX_MEDIUM_FD; + + if (phydev->speed != SPEED_100) + mode &= ~AX_MEDIUM_PS; + } + + asix_write_medium_mode(dev, mode, 0); + phy_print_status(phydev); + usbnet_link_change(dev, phydev->link, 0); +} + +int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm) +{ + int ret; + + netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value); + ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm); + if (ret < 0) + netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n", + value, ret); + + if (sleep) + msleep(sleep); + + return ret; +} + +/* + * AX88772 & AX88178 have a 16-bit RX_CTL value + */ +void asix_set_multicast(struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + struct asix_data *data = (struct asix_data *)&dev->data; + u16 rx_ctl = AX_DEFAULT_RX_CTL; + + if (net->flags & IFF_PROMISC) { + rx_ctl |= AX_RX_CTL_PRO; + } else if (net->flags & IFF_ALLMULTI || + netdev_mc_count(net) > AX_MAX_MCAST) { + rx_ctl |= AX_RX_CTL_AMALL; + } else if (netdev_mc_empty(net)) { + /* just broadcast and directed */ + } else { + /* We use the 20 byte dev->data + * for our 8 byte filter buffer + * to avoid allocating memory that + * is tricky to free later */ + struct netdev_hw_addr *ha; + u32 crc_bits; + + memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE); + + /* Build the multicast hash filter. */ + netdev_for_each_mc_addr(ha, net) { + crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; + data->multi_filter[crc_bits >> 3] |= + 1 << (crc_bits & 7); + } + + asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0, + AX_MCAST_FILTER_SIZE, data->multi_filter); + + rx_ctl |= AX_RX_CTL_AM; + } + + asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL); +} + +static int __asix_mdio_read(struct net_device *netdev, int phy_id, int loc, + bool in_pm) +{ + struct usbnet *dev = netdev_priv(netdev); + __le16 res; + int ret; + + mutex_lock(&dev->phy_mutex); + + ret = asix_check_host_enable(dev, in_pm); + if (ret == -ENODEV || ret == -ETIMEDOUT) { + mutex_unlock(&dev->phy_mutex); + return ret; + } + + ret = asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, + &res, in_pm); + if (ret < 0) + goto out; + + ret = asix_set_hw_mii(dev, in_pm); +out: + mutex_unlock(&dev->phy_mutex); + + netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", + phy_id, loc, le16_to_cpu(res)); + + return ret < 0 ? ret : le16_to_cpu(res); +} + +int asix_mdio_read(struct net_device *netdev, int phy_id, int loc) +{ + return __asix_mdio_read(netdev, phy_id, loc, false); +} + +static int __asix_mdio_write(struct net_device *netdev, int phy_id, int loc, + int val, bool in_pm) +{ + struct usbnet *dev = netdev_priv(netdev); + __le16 res = cpu_to_le16(val); + int ret; + + netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", + phy_id, loc, val); + + mutex_lock(&dev->phy_mutex); + + ret = asix_check_host_enable(dev, in_pm); + if (ret == -ENODEV) + goto out; + + ret = asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, + &res, in_pm); + if (ret < 0) + goto out; + + ret = asix_set_hw_mii(dev, in_pm); +out: + mutex_unlock(&dev->phy_mutex); + + return ret < 0 ? ret : 0; +} + +void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val) +{ + __asix_mdio_write(netdev, phy_id, loc, val, false); +} + +/* MDIO read and write wrappers for phylib */ +int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum) +{ + struct usbnet *priv = bus->priv; + + return __asix_mdio_read(priv->net, phy_id, regnum, false); +} + +int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val) +{ + struct usbnet *priv = bus->priv; + + return __asix_mdio_write(priv->net, phy_id, regnum, val, false); +} + +int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc) +{ + return __asix_mdio_read(netdev, phy_id, loc, true); +} + +void +asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val) +{ + __asix_mdio_write(netdev, phy_id, loc, val, true); +} + +void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + u8 opt; + + if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, + 0, 0, 1, &opt, 0) < 0) { + wolinfo->supported = 0; + wolinfo->wolopts = 0; + return; + } + wolinfo->supported = WAKE_PHY | WAKE_MAGIC; + wolinfo->wolopts = 0; + if (opt & AX_MONITOR_LINK) + wolinfo->wolopts |= WAKE_PHY; + if (opt & AX_MONITOR_MAGIC) + wolinfo->wolopts |= WAKE_MAGIC; +} + +int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + u8 opt = 0; + + if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC)) + return -EINVAL; + + if (wolinfo->wolopts & WAKE_PHY) + opt |= AX_MONITOR_LINK; + if (wolinfo->wolopts & WAKE_MAGIC) + opt |= AX_MONITOR_MAGIC; + + if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE, + opt, 0, 0, NULL, 0) < 0) + return -EINVAL; + + return 0; +} + +int asix_get_eeprom_len(struct net_device *net) +{ + return AX_EEPROM_LEN; +} + +int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, + u8 *data) +{ + struct usbnet *dev = netdev_priv(net); + u16 *eeprom_buff; + int first_word, last_word; + int i; + + if (eeprom->len == 0) + return -EINVAL; + + eeprom->magic = AX_EEPROM_MAGIC; + + first_word = eeprom->offset >> 1; + last_word = (eeprom->offset + eeprom->len - 1) >> 1; + + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); + if (!eeprom_buff) + return -ENOMEM; + + /* ax8817x returns 2 bytes from eeprom on read */ + for (i = first_word; i <= last_word; i++) { + if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2, + &eeprom_buff[i - first_word], 0) < 0) { + kfree(eeprom_buff); + return -EIO; + } + } + + memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len); + kfree(eeprom_buff); + return 0; +} + +int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, + u8 *data) +{ + struct usbnet *dev = netdev_priv(net); + u16 *eeprom_buff; + int first_word, last_word; + int i; + int ret; + + netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n", + eeprom->len, eeprom->offset, eeprom->magic); + + if (eeprom->len == 0) + return -EINVAL; + + if (eeprom->magic != AX_EEPROM_MAGIC) + return -EINVAL; + + first_word = eeprom->offset >> 1; + last_word = (eeprom->offset + eeprom->len - 1) >> 1; + + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); + if (!eeprom_buff) + return -ENOMEM; + + /* align data to 16 bit boundaries, read the missing data from + the EEPROM */ + if (eeprom->offset & 1) { + ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2, + &eeprom_buff[0], 0); + if (ret < 0) { + netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word); + goto free; + } + } + + if ((eeprom->offset + eeprom->len) & 1) { + ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2, + &eeprom_buff[last_word - first_word], 0); + if (ret < 0) { + netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word); + goto free; + } + } + + memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len); + + /* write data to EEPROM */ + ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0); + if (ret < 0) { + netdev_err(net, "Failed to enable EEPROM write\n"); + goto free; + } + msleep(20); + + for (i = first_word; i <= last_word; i++) { + netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n", + i, eeprom_buff[i - first_word]); + ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i, + eeprom_buff[i - first_word], 0, NULL, 0); + if (ret < 0) { + netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n", + i); + goto free; + } + msleep(20); + } + + ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0); + if (ret < 0) { + netdev_err(net, "Failed to disable EEPROM write\n"); + goto free; + } + + ret = 0; +free: + kfree(eeprom_buff); + return ret; +} + +void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) +{ + /* Inherit standard device info */ + usbnet_get_drvinfo(net, info); + strscpy(info->driver, DRIVER_NAME, sizeof(info->driver)); + strscpy(info->version, DRIVER_VERSION, sizeof(info->version)); +} + +int asix_set_mac_address(struct net_device *net, void *p) +{ + struct usbnet *dev = netdev_priv(net); + struct asix_data *data = (struct asix_data *)&dev->data; + struct sockaddr *addr = p; + + if (netif_running(net)) + return -EBUSY; + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + eth_hw_addr_set(net, addr->sa_data); + + /* We use the 20 byte dev->data + * for our 6 byte mac buffer + * to avoid allocating memory that + * is tricky to free later */ + memcpy(data->mac_addr, addr->sa_data, ETH_ALEN); + asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN, + data->mac_addr); + + return 0; +} -- cgit v1.2.3