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/spi/spi-dw-pci.c | 215 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 drivers/spi/spi-dw-pci.c (limited to 'drivers/spi/spi-dw-pci.c') diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c new file mode 100644 index 000000000..7c8279d13 --- /dev/null +++ b/drivers/spi/spi-dw-pci.c @@ -0,0 +1,215 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PCI interface driver for DW SPI Core + * + * Copyright (c) 2009, 2014 Intel Corporation. + */ + +#include +#include +#include +#include +#include + +#include "spi-dw.h" + +#define DRIVER_NAME "dw_spi_pci" + +/* HW info for MRST Clk Control Unit, 32b reg per controller */ +#define MRST_SPI_CLK_BASE 100000000 /* 100m */ +#define MRST_CLK_SPI_REG 0xff11d86c +#define CLK_SPI_BDIV_OFFSET 0 +#define CLK_SPI_BDIV_MASK 0x00000007 +#define CLK_SPI_CDIV_OFFSET 9 +#define CLK_SPI_CDIV_MASK 0x00000e00 +#define CLK_SPI_DISABLE_OFFSET 8 + +struct dw_spi_pci_desc { + int (*setup)(struct dw_spi *); + u16 num_cs; + u16 bus_num; + u32 max_freq; +}; + +static int dw_spi_pci_mid_init(struct dw_spi *dws) +{ + void __iomem *clk_reg; + u32 clk_cdiv; + + clk_reg = ioremap(MRST_CLK_SPI_REG, 16); + if (!clk_reg) + return -ENOMEM; + + /* Get SPI controller operating freq info */ + clk_cdiv = readl(clk_reg + dws->bus_num * sizeof(u32)); + clk_cdiv &= CLK_SPI_CDIV_MASK; + clk_cdiv >>= CLK_SPI_CDIV_OFFSET; + dws->max_freq = MRST_SPI_CLK_BASE / (clk_cdiv + 1); + + iounmap(clk_reg); + + dw_spi_dma_setup_mfld(dws); + + return 0; +} + +static int dw_spi_pci_generic_init(struct dw_spi *dws) +{ + dw_spi_dma_setup_generic(dws); + + return 0; +} + +static struct dw_spi_pci_desc dw_spi_pci_mid_desc_1 = { + .setup = dw_spi_pci_mid_init, + .num_cs = 5, + .bus_num = 0, +}; + +static struct dw_spi_pci_desc dw_spi_pci_mid_desc_2 = { + .setup = dw_spi_pci_mid_init, + .num_cs = 2, + .bus_num = 1, +}; + +static struct dw_spi_pci_desc dw_spi_pci_ehl_desc = { + .setup = dw_spi_pci_generic_init, + .num_cs = 2, + .bus_num = -1, + .max_freq = 100000000, +}; + +static int dw_spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct dw_spi_pci_desc *desc = (struct dw_spi_pci_desc *)ent->driver_data; + struct dw_spi *dws; + int pci_bar = 0; + int ret; + + ret = pcim_enable_device(pdev); + if (ret) + return ret; + + dws = devm_kzalloc(&pdev->dev, sizeof(*dws), GFP_KERNEL); + if (!dws) + return -ENOMEM; + + /* Get basic io resource and map it */ + dws->paddr = pci_resource_start(pdev, pci_bar); + pci_set_master(pdev); + + ret = pcim_iomap_regions(pdev, 1 << pci_bar, pci_name(pdev)); + if (ret) + return ret; + + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); + if (ret < 0) + return ret; + + dws->regs = pcim_iomap_table(pdev)[pci_bar]; + dws->irq = pci_irq_vector(pdev, 0); + + /* + * Specific handling for platforms, like dma setup, + * clock rate, FIFO depth. + */ + if (desc) { + dws->num_cs = desc->num_cs; + dws->bus_num = desc->bus_num; + dws->max_freq = desc->max_freq; + + if (desc->setup) { + ret = desc->setup(dws); + if (ret) + goto err_free_irq_vectors; + } + } else { + ret = -ENODEV; + goto err_free_irq_vectors; + } + + ret = dw_spi_add_host(&pdev->dev, dws); + if (ret) + goto err_free_irq_vectors; + + /* PCI hook and SPI hook use the same drv data */ + pci_set_drvdata(pdev, dws); + + dev_info(&pdev->dev, "found PCI SPI controller(ID: %04x:%04x)\n", + pdev->vendor, pdev->device); + + pm_runtime_set_autosuspend_delay(&pdev->dev, 1000); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + pm_runtime_allow(&pdev->dev); + + return 0; + +err_free_irq_vectors: + pci_free_irq_vectors(pdev); + return ret; +} + +static void dw_spi_pci_remove(struct pci_dev *pdev) +{ + struct dw_spi *dws = pci_get_drvdata(pdev); + + pm_runtime_forbid(&pdev->dev); + pm_runtime_get_noresume(&pdev->dev); + + dw_spi_remove_host(dws); + pci_free_irq_vectors(pdev); +} + +#ifdef CONFIG_PM_SLEEP +static int dw_spi_pci_suspend(struct device *dev) +{ + struct dw_spi *dws = dev_get_drvdata(dev); + + return dw_spi_suspend_host(dws); +} + +static int dw_spi_pci_resume(struct device *dev) +{ + struct dw_spi *dws = dev_get_drvdata(dev); + + return dw_spi_resume_host(dws); +} +#endif + +static SIMPLE_DEV_PM_OPS(dw_spi_pci_pm_ops, dw_spi_pci_suspend, dw_spi_pci_resume); + +static const struct pci_device_id dw_spi_pci_ids[] = { + /* Intel MID platform SPI controller 0 */ + /* + * The access to the device 8086:0801 is disabled by HW, since it's + * exclusively used by SCU to communicate with MSIC. + */ + /* Intel MID platform SPI controller 1 */ + { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&dw_spi_pci_mid_desc_1}, + /* Intel MID platform SPI controller 2 */ + { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&dw_spi_pci_mid_desc_2}, + /* Intel Elkhart Lake PSE SPI controllers */ + { PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&dw_spi_pci_ehl_desc}, + { PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&dw_spi_pci_ehl_desc}, + { PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&dw_spi_pci_ehl_desc}, + { PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&dw_spi_pci_ehl_desc}, + {}, +}; +MODULE_DEVICE_TABLE(pci, dw_spi_pci_ids); + +static struct pci_driver dw_spi_pci_driver = { + .name = DRIVER_NAME, + .id_table = dw_spi_pci_ids, + .probe = dw_spi_pci_probe, + .remove = dw_spi_pci_remove, + .driver = { + .pm = &dw_spi_pci_pm_ops, + }, +}; +module_pci_driver(dw_spi_pci_driver); + +MODULE_AUTHOR("Feng Tang "); +MODULE_DESCRIPTION("PCI interface driver for DW SPI Core"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(SPI_DW_CORE); -- cgit v1.2.3