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/usb/gadget/udc/net2280.h | 390 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 390 insertions(+) create mode 100644 drivers/usb/gadget/udc/net2280.h (limited to 'drivers/usb/gadget/udc/net2280.h') diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h new file mode 100644 index 000000000..34716a9f4 --- /dev/null +++ b/drivers/usb/gadget/udc/net2280.h @@ -0,0 +1,390 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * NetChip 2280 high/full speed USB device controller. + * Unlike many such controllers, this one talks PCI. + */ + +/* + * Copyright (C) 2002 NetChip Technology, Inc. (http://www.netchip.com) + * Copyright (C) 2003 David Brownell + * Copyright (C) 2014 Ricardo Ribalda - Qtechnology/AS + */ + +#include +#include + +/*-------------------------------------------------------------------------*/ + +#ifdef __KERNEL__ + +/* indexed registers [11.10] are accessed indirectly + * caller must own the device lock. + */ + +static inline u32 get_idx_reg(struct net2280_regs __iomem *regs, u32 index) +{ + writel(index, ®s->idxaddr); + /* NOTE: synchs device/cpu memory views */ + return readl(®s->idxdata); +} + +static inline void +set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value) +{ + writel(index, ®s->idxaddr); + writel(value, ®s->idxdata); + /* posted, may not be visible yet */ +} + +#endif /* __KERNEL__ */ + +#define PCI_VENDOR_ID_PLX_LEGACY 0x17cc + +#define PLX_LEGACY BIT(0) +#define PLX_2280 BIT(1) +#define PLX_SUPERSPEED BIT(2) +#define PLX_PCIE BIT(3) + +#define REG_DIAG 0x0 +#define RETRY_COUNTER 16 +#define FORCE_PCI_SERR 11 +#define FORCE_PCI_INTERRUPT 10 +#define FORCE_USB_INTERRUPT 9 +#define FORCE_CPU_INTERRUPT 8 +#define ILLEGAL_BYTE_ENABLES 5 +#define FAST_TIMES 4 +#define FORCE_RECEIVE_ERROR 2 +#define FORCE_TRANSMIT_CRC_ERROR 0 +#define REG_FRAME 0x02 /* from last sof */ +#define REG_CHIPREV 0x03 /* in bcd */ +#define REG_HS_NAK_RATE 0x0a /* NAK per N uframes */ + +#define CHIPREV_1 0x0100 +#define CHIPREV_1A 0x0110 + +/* DEFECT 7374 */ +#define DEFECT_7374_NUMBEROF_MAX_WAIT_LOOPS 200 +#define DEFECT_7374_PROCESSOR_WAIT_TIME 10 + +/* ep0 max packet size */ +#define EP0_SS_MAX_PACKET_SIZE 0x200 +#define EP0_HS_MAX_PACKET_SIZE 0x40 +#ifdef __KERNEL__ + +/*-------------------------------------------------------------------------*/ + +/* [8.3] for scatter/gather i/o + * use struct net2280_dma_regs bitfields + */ +struct net2280_dma { + __le32 dmacount; + __le32 dmaaddr; /* the buffer */ + __le32 dmadesc; /* next dma descriptor */ + __le32 _reserved; +} __aligned(16); + +/*-------------------------------------------------------------------------*/ + +/* DRIVER DATA STRUCTURES and UTILITIES */ + +struct net2280_ep { + struct usb_ep ep; + struct net2280_ep_regs __iomem *cfg; + struct net2280_ep_regs __iomem *regs; + struct net2280_dma_regs __iomem *dma; + struct net2280_dma *dummy; + dma_addr_t td_dma; /* of dummy */ + struct net2280 *dev; + unsigned long irqs; + + /* analogous to a host-side qh */ + struct list_head queue; + const struct usb_endpoint_descriptor *desc; + unsigned num : 8, + fifo_size : 12, + in_fifo_validate : 1, + out_overflow : 1, + stopped : 1, + wedged : 1, + is_in : 1, + is_iso : 1, + responded : 1; +}; + +static inline void allow_status(struct net2280_ep *ep) +{ + /* ep0 only */ + writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) | + BIT(CLEAR_NAK_OUT_PACKETS) | + BIT(CLEAR_NAK_OUT_PACKETS_MODE), + &ep->regs->ep_rsp); + ep->stopped = 1; +} + +static inline void allow_status_338x(struct net2280_ep *ep) +{ + /* + * Control Status Phase Handshake was set by the chip when the setup + * packet arrived. While set, the chip automatically NAKs the host's + * Status Phase tokens. + */ + writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE), &ep->regs->ep_rsp); + + ep->stopped = 1; + + /* TD 9.9 Halt Endpoint test. TD 9.22 set feature test. */ + ep->responded = 0; +} + +struct net2280_request { + struct usb_request req; + struct net2280_dma *td; + dma_addr_t td_dma; + struct list_head queue; + unsigned mapped : 1, + valid : 1; +}; + +struct net2280 { + /* each pci device provides one gadget, several endpoints */ + struct usb_gadget gadget; + spinlock_t lock; + struct net2280_ep ep[9]; + struct usb_gadget_driver *driver; + unsigned enabled : 1, + protocol_stall : 1, + softconnect : 1, + got_irq : 1, + region:1, + added:1, + u1_enable:1, + u2_enable:1, + ltm_enable:1, + wakeup_enable:1, + addressed_state:1, + async_callbacks:1, + bug7734_patched:1; + u16 chiprev; + int enhanced_mode; + int n_ep; + kernel_ulong_t quirks; + + + /* pci state used to access those endpoints */ + struct pci_dev *pdev; + struct net2280_regs __iomem *regs; + struct net2280_usb_regs __iomem *usb; + struct usb338x_usb_ext_regs __iomem *usb_ext; + struct net2280_pci_regs __iomem *pci; + struct net2280_dma_regs __iomem *dma; + struct net2280_dep_regs __iomem *dep; + struct net2280_ep_regs __iomem *epregs; + struct usb338x_ll_regs __iomem *llregs; + struct usb338x_pl_regs __iomem *plregs; + + struct dma_pool *requests; + /* statistics...*/ +}; + +static inline void set_halt(struct net2280_ep *ep) +{ + /* ep0 and bulk/intr endpoints */ + writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) | + /* set NAK_OUT for erratum 0114 */ + ((ep->dev->chiprev == CHIPREV_1) << SET_NAK_OUT_PACKETS) | + BIT(SET_ENDPOINT_HALT), + &ep->regs->ep_rsp); +} + +static inline void clear_halt(struct net2280_ep *ep) +{ + /* ep0 and bulk/intr endpoints */ + writel(BIT(CLEAR_ENDPOINT_HALT) | + BIT(CLEAR_ENDPOINT_TOGGLE) | + /* + * unless the gadget driver left a short packet in the + * fifo, this reverses the erratum 0114 workaround. + */ + ((ep->dev->chiprev == CHIPREV_1) << CLEAR_NAK_OUT_PACKETS), + &ep->regs->ep_rsp); +} + +/* + * FSM value for Defect 7374 (U1U2 Test) is managed in + * chip's SCRATCH register: + */ +#define DEFECT7374_FSM_FIELD 28 + +/* Waiting for Control Read: + * - A transition to this state indicates a fresh USB connection, + * before the first Setup Packet. The connection speed is not + * known. Firmware is waiting for the first Control Read. + * - Starting state: This state can be thought of as the FSM's typical + * starting state. + * - Tip: Upon the first SS Control Read the FSM never + * returns to this state. + */ +#define DEFECT7374_FSM_WAITING_FOR_CONTROL_READ BIT(DEFECT7374_FSM_FIELD) + +/* Non-SS Control Read: + * - A transition to this state indicates detection of the first HS + * or FS Control Read. + * - Tip: Upon the first SS Control Read the FSM never + * returns to this state. + */ +#define DEFECT7374_FSM_NON_SS_CONTROL_READ (2 << DEFECT7374_FSM_FIELD) + +/* SS Control Read: + * - A transition to this state indicates detection of the + * first SS Control Read. + * - This state indicates workaround completion. Workarounds no longer + * need to be applied (as long as the chip remains powered up). + * - Tip: Once in this state the FSM state does not change (until + * the chip's power is lost and restored). + * - This can be thought of as the final state of the FSM; + * the FSM 'locks-up' in this state until the chip loses power. + */ +#define DEFECT7374_FSM_SS_CONTROL_READ (3 << DEFECT7374_FSM_FIELD) + +#ifdef USE_RDK_LEDS + +static inline void net2280_led_init(struct net2280 *dev) +{ + /* LED3 (green) is on during USB activity. note erratum 0113. */ + writel(BIT(GPIO3_LED_SELECT) | + BIT(GPIO3_OUTPUT_ENABLE) | + BIT(GPIO2_OUTPUT_ENABLE) | + BIT(GPIO1_OUTPUT_ENABLE) | + BIT(GPIO0_OUTPUT_ENABLE), + &dev->regs->gpioctl); +} + +/* indicate speed with bi-color LED 0/1 */ +static inline +void net2280_led_speed(struct net2280 *dev, enum usb_device_speed speed) +{ + u32 val = readl(&dev->regs->gpioctl); + switch (speed) { + case USB_SPEED_SUPER: /* green + red */ + val |= BIT(GPIO0_DATA) | BIT(GPIO1_DATA); + break; + case USB_SPEED_HIGH: /* green */ + val &= ~BIT(GPIO0_DATA); + val |= BIT(GPIO1_DATA); + break; + case USB_SPEED_FULL: /* red */ + val &= ~BIT(GPIO1_DATA); + val |= BIT(GPIO0_DATA); + break; + default: /* (off/black) */ + val &= ~(BIT(GPIO1_DATA) | BIT(GPIO0_DATA)); + break; + } + writel(val, &dev->regs->gpioctl); +} + +/* indicate power with LED 2 */ +static inline void net2280_led_active(struct net2280 *dev, int is_active) +{ + u32 val = readl(&dev->regs->gpioctl); + + /* FIXME this LED never seems to turn on.*/ + if (is_active) + val |= GPIO2_DATA; + else + val &= ~GPIO2_DATA; + writel(val, &dev->regs->gpioctl); +} + +static inline void net2280_led_shutdown(struct net2280 *dev) +{ + /* turn off all four GPIO*_DATA bits */ + writel(readl(&dev->regs->gpioctl) & ~0x0f, + &dev->regs->gpioctl); +} + +#else + +#define net2280_led_init(dev) do { } while (0) +#define net2280_led_speed(dev, speed) do { } while (0) +#define net2280_led_shutdown(dev) do { } while (0) + +#endif + +/*-------------------------------------------------------------------------*/ + +#define ep_dbg(ndev, fmt, args...) \ + dev_dbg((&((ndev)->pdev->dev)), fmt, ##args) + +#define ep_vdbg(ndev, fmt, args...) \ + dev_vdbg((&((ndev)->pdev->dev)), fmt, ##args) + +#define ep_info(ndev, fmt, args...) \ + dev_info((&((ndev)->pdev->dev)), fmt, ##args) + +#define ep_warn(ndev, fmt, args...) \ + dev_warn((&((ndev)->pdev->dev)), fmt, ##args) + +#define ep_err(ndev, fmt, args...) \ + dev_err((&((ndev)->pdev->dev)), fmt, ##args) + +/*-------------------------------------------------------------------------*/ + +static inline void set_fifo_bytecount(struct net2280_ep *ep, unsigned count) +{ + if (ep->dev->pdev->vendor == 0x17cc) + writeb(count, 2 + (u8 __iomem *) &ep->regs->ep_cfg); + else{ + u32 tmp = readl(&ep->cfg->ep_cfg) & + (~(0x07 << EP_FIFO_BYTE_COUNT)); + writel(tmp | (count << EP_FIFO_BYTE_COUNT), &ep->cfg->ep_cfg); + } +} + +static inline void start_out_naking(struct net2280_ep *ep) +{ + /* NOTE: hardware races lurk here, and PING protocol issues */ + writel(BIT(SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp); + /* synch with device */ + readl(&ep->regs->ep_rsp); +} + +static inline void stop_out_naking(struct net2280_ep *ep) +{ + u32 tmp; + + tmp = readl(&ep->regs->ep_stat); + if ((tmp & BIT(NAK_OUT_PACKETS)) != 0) + writel(BIT(CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp); +} + + +static inline void set_max_speed(struct net2280_ep *ep, u32 max) +{ + u32 reg; + static const u32 ep_enhanced[9] = { 0x10, 0x60, 0x30, 0x80, + 0x50, 0x20, 0x70, 0x40, 0x90 }; + + if (ep->dev->enhanced_mode) { + reg = ep_enhanced[ep->num]; + switch (ep->dev->gadget.speed) { + case USB_SPEED_SUPER: + reg += 2; + break; + case USB_SPEED_FULL: + reg += 1; + break; + case USB_SPEED_HIGH: + default: + break; + } + } else { + reg = (ep->num + 1) * 0x10; + if (ep->dev->gadget.speed != USB_SPEED_HIGH) + reg += 1; + } + + set_idx_reg(ep->dev->regs, reg, max); +} + +#endif /* __KERNEL__ */ -- cgit v1.2.3