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/mfd/intel_quark_i2c_gpio.c | 309 +++++++++++++++++++++++++++++++++++++ 1 file changed, 309 insertions(+) create mode 100644 drivers/mfd/intel_quark_i2c_gpio.c (limited to 'drivers/mfd/intel_quark_i2c_gpio.c') diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c new file mode 100644 index 000000000..9b9c76bd0 --- /dev/null +++ b/drivers/mfd/intel_quark_i2c_gpio.c @@ -0,0 +1,309 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Intel Quark MFD PCI driver for I2C & GPIO + * + * Copyright(c) 2014 Intel Corporation. + * + * Intel Quark PCI device for I2C and GPIO controller sharing the same + * PCI function. This PCI driver will split the 2 devices into their + * respective drivers. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* PCI BAR for register base address */ +#define MFD_I2C_BAR 0 +#define MFD_GPIO_BAR 1 + +/* ACPI _ADR value to match the child node */ +#define MFD_ACPI_MATCH_GPIO 0ULL +#define MFD_ACPI_MATCH_I2C 1ULL + +#define INTEL_QUARK_IORES_MEM 0 +#define INTEL_QUARK_IORES_IRQ 1 + +#define INTEL_QUARK_I2C_CONTROLLER_CLK "i2c_designware.0" + +/* The Quark I2C controller source clock */ +#define INTEL_QUARK_I2C_CLK_HZ 33000000 + +struct intel_quark_mfd { + struct clk *i2c_clk; + struct clk_lookup *i2c_clk_lookup; +}; + +static const struct property_entry intel_quark_i2c_controller_standard_properties[] = { + PROPERTY_ENTRY_U32("clock-frequency", I2C_MAX_STANDARD_MODE_FREQ), + { } +}; + +static const struct software_node intel_quark_i2c_controller_standard_node = { + .name = "intel-quark-i2c-controller", + .properties = intel_quark_i2c_controller_standard_properties, +}; + +static const struct property_entry intel_quark_i2c_controller_fast_properties[] = { + PROPERTY_ENTRY_U32("clock-frequency", I2C_MAX_FAST_MODE_FREQ), + { } +}; + +static const struct software_node intel_quark_i2c_controller_fast_node = { + .name = "intel-quark-i2c-controller", + .properties = intel_quark_i2c_controller_fast_properties, +}; + +static const struct dmi_system_id dmi_platform_info[] = { + { + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Galileo"), + }, + .driver_data = (void *)&intel_quark_i2c_controller_standard_node, + }, + { + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_NAME, "GalileoGen2"), + }, + .driver_data = (void *)&intel_quark_i2c_controller_fast_node, + }, + { + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"), + }, + .driver_data = (void *)&intel_quark_i2c_controller_fast_node, + }, + {} +}; + +/* This is used as a place holder and will be modified at run-time */ +static struct resource intel_quark_i2c_res[] = { + [INTEL_QUARK_IORES_MEM] = { + .flags = IORESOURCE_MEM, + }, + [INTEL_QUARK_IORES_IRQ] = { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mfd_cell_acpi_match intel_quark_acpi_match_i2c = { + .adr = MFD_ACPI_MATCH_I2C, +}; + +/* This is used as a place holder and will be modified at run-time */ +static struct resource intel_quark_gpio_res[] = { + [INTEL_QUARK_IORES_MEM] = { + .flags = IORESOURCE_MEM, + }, + [INTEL_QUARK_IORES_IRQ] = { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mfd_cell_acpi_match intel_quark_acpi_match_gpio = { + .adr = MFD_ACPI_MATCH_GPIO, +}; + +static const struct software_node intel_quark_gpio_controller_node = { + .name = "intel-quark-gpio-controller", +}; + +static const struct property_entry intel_quark_gpio_portA_properties[] = { + PROPERTY_ENTRY_U32("reg", 0), + PROPERTY_ENTRY_U32("snps,nr-gpios", 8), + PROPERTY_ENTRY_U32("gpio-base", 8), + { } +}; + +static const struct software_node intel_quark_gpio_portA_node = { + .name = "portA", + .parent = &intel_quark_gpio_controller_node, + .properties = intel_quark_gpio_portA_properties, +}; + +static const struct software_node *intel_quark_gpio_node_group[] = { + &intel_quark_gpio_controller_node, + &intel_quark_gpio_portA_node, + NULL +}; + +static struct mfd_cell intel_quark_mfd_cells[] = { + [MFD_I2C_BAR] = { + .id = MFD_I2C_BAR, + .name = "i2c_designware", + .acpi_match = &intel_quark_acpi_match_i2c, + .num_resources = ARRAY_SIZE(intel_quark_i2c_res), + .resources = intel_quark_i2c_res, + .ignore_resource_conflicts = true, + }, + [MFD_GPIO_BAR] = { + .id = MFD_GPIO_BAR, + .name = "gpio-dwapb", + .acpi_match = &intel_quark_acpi_match_gpio, + .num_resources = ARRAY_SIZE(intel_quark_gpio_res), + .resources = intel_quark_gpio_res, + .ignore_resource_conflicts = true, + }, +}; + +static const struct pci_device_id intel_quark_mfd_ids[] = { + { PCI_VDEVICE(INTEL, 0x0934), }, + {}, +}; +MODULE_DEVICE_TABLE(pci, intel_quark_mfd_ids); + +static int intel_quark_register_i2c_clk(struct device *dev) +{ + struct intel_quark_mfd *quark_mfd = dev_get_drvdata(dev); + struct clk *i2c_clk; + + i2c_clk = clk_register_fixed_rate(dev, + INTEL_QUARK_I2C_CONTROLLER_CLK, NULL, + 0, INTEL_QUARK_I2C_CLK_HZ); + if (IS_ERR(i2c_clk)) + return PTR_ERR(i2c_clk); + + quark_mfd->i2c_clk = i2c_clk; + quark_mfd->i2c_clk_lookup = clkdev_create(i2c_clk, NULL, + INTEL_QUARK_I2C_CONTROLLER_CLK); + + if (!quark_mfd->i2c_clk_lookup) { + clk_unregister(quark_mfd->i2c_clk); + dev_err(dev, "Fixed clk register failed\n"); + return -ENOMEM; + } + + return 0; +} + +static void intel_quark_unregister_i2c_clk(struct device *dev) +{ + struct intel_quark_mfd *quark_mfd = dev_get_drvdata(dev); + + if (!quark_mfd->i2c_clk_lookup) + return; + + clkdev_drop(quark_mfd->i2c_clk_lookup); + clk_unregister(quark_mfd->i2c_clk); +} + +static int intel_quark_i2c_setup(struct pci_dev *pdev) +{ + struct mfd_cell *cell = &intel_quark_mfd_cells[MFD_I2C_BAR]; + struct resource *res = intel_quark_i2c_res; + const struct dmi_system_id *dmi_id; + + res[INTEL_QUARK_IORES_MEM].start = pci_resource_start(pdev, MFD_I2C_BAR); + res[INTEL_QUARK_IORES_MEM].end = pci_resource_end(pdev, MFD_I2C_BAR); + + res[INTEL_QUARK_IORES_IRQ].start = pci_irq_vector(pdev, 0); + res[INTEL_QUARK_IORES_IRQ].end = pci_irq_vector(pdev, 0); + + /* Normal mode by default */ + cell->swnode = &intel_quark_i2c_controller_standard_node; + + dmi_id = dmi_first_match(dmi_platform_info); + if (dmi_id) + cell->swnode = (struct software_node *)dmi_id->driver_data; + + return 0; +} + +static int intel_quark_gpio_setup(struct pci_dev *pdev) +{ + struct mfd_cell *cell = &intel_quark_mfd_cells[MFD_GPIO_BAR]; + struct resource *res = intel_quark_gpio_res; + int ret; + + res[INTEL_QUARK_IORES_MEM].start = pci_resource_start(pdev, MFD_GPIO_BAR); + res[INTEL_QUARK_IORES_MEM].end = pci_resource_end(pdev, MFD_GPIO_BAR); + + res[INTEL_QUARK_IORES_IRQ].start = pci_irq_vector(pdev, 0); + res[INTEL_QUARK_IORES_IRQ].end = pci_irq_vector(pdev, 0); + + ret = software_node_register_node_group(intel_quark_gpio_node_group); + if (ret) + return ret; + + cell->swnode = &intel_quark_gpio_controller_node; + return 0; +} + +static int intel_quark_mfd_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct intel_quark_mfd *quark_mfd; + int ret; + + ret = pcim_enable_device(pdev); + if (ret) + return ret; + + quark_mfd = devm_kzalloc(&pdev->dev, sizeof(*quark_mfd), GFP_KERNEL); + if (!quark_mfd) + return -ENOMEM; + + dev_set_drvdata(&pdev->dev, quark_mfd); + + ret = intel_quark_register_i2c_clk(&pdev->dev); + if (ret) + return ret; + + pci_set_master(pdev); + + /* This driver only requires 1 IRQ vector */ + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); + if (ret < 0) + goto err_unregister_i2c_clk; + + ret = intel_quark_i2c_setup(pdev); + if (ret) + goto err_free_irq_vectors; + + ret = intel_quark_gpio_setup(pdev); + if (ret) + goto err_free_irq_vectors; + + ret = mfd_add_devices(&pdev->dev, 0, intel_quark_mfd_cells, + ARRAY_SIZE(intel_quark_mfd_cells), NULL, 0, + NULL); + if (ret) + goto err_unregister_gpio_node_group; + + return 0; + +err_unregister_gpio_node_group: + software_node_unregister_node_group(intel_quark_gpio_node_group); +err_free_irq_vectors: + pci_free_irq_vectors(pdev); +err_unregister_i2c_clk: + intel_quark_unregister_i2c_clk(&pdev->dev); + return ret; +} + +static void intel_quark_mfd_remove(struct pci_dev *pdev) +{ + mfd_remove_devices(&pdev->dev); + software_node_unregister_node_group(intel_quark_gpio_node_group); + pci_free_irq_vectors(pdev); + intel_quark_unregister_i2c_clk(&pdev->dev); +} + +static struct pci_driver intel_quark_mfd_driver = { + .name = "intel_quark_mfd_i2c_gpio", + .id_table = intel_quark_mfd_ids, + .probe = intel_quark_mfd_probe, + .remove = intel_quark_mfd_remove, +}; + +module_pci_driver(intel_quark_mfd_driver); + +MODULE_AUTHOR("Raymond Tan "); +MODULE_DESCRIPTION("Intel Quark MFD PCI driver for I2C & GPIO"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3