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/ata/pata_buddha.c | 299 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 299 insertions(+) create mode 100644 drivers/ata/pata_buddha.c (limited to 'drivers/ata/pata_buddha.c') diff --git a/drivers/ata/pata_buddha.c b/drivers/ata/pata_buddha.c new file mode 100644 index 000000000..27d4c417f --- /dev/null +++ b/drivers/ata/pata_buddha.c @@ -0,0 +1,299 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Buddha, Catweasel and X-Surf PATA controller driver + * + * Copyright (c) 2018 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Based on buddha.c: + * + * Copyright (C) 1997, 2001 by Geert Uytterhoeven and others + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define DRV_NAME "pata_buddha" +#define DRV_VERSION "0.1.1" + +#define BUDDHA_BASE1 0x800 +#define BUDDHA_BASE2 0xa00 +#define BUDDHA_BASE3 0xc00 +#define XSURF_BASE1 0xb000 /* 2.5" interface */ +#define XSURF_BASE2 0xd000 /* 3.5" interface */ +#define BUDDHA_CONTROL 0x11a +#define BUDDHA_IRQ 0xf00 +#define XSURF_IRQ 0x7e +#define BUDDHA_IRQ_MR 0xfc0 /* master interrupt enable */ + +enum { + BOARD_BUDDHA = 0, + BOARD_CATWEASEL, + BOARD_XSURF +}; + +static unsigned int buddha_bases[3] = { + BUDDHA_BASE1, BUDDHA_BASE2, BUDDHA_BASE3 +}; + +static unsigned int xsurf_bases[2] = { + XSURF_BASE1, XSURF_BASE2 +}; + +static struct scsi_host_template pata_buddha_sht = { + ATA_PIO_SHT(DRV_NAME), +}; + +/* FIXME: is this needed? */ +static unsigned int pata_buddha_data_xfer(struct ata_queued_cmd *qc, + unsigned char *buf, + unsigned int buflen, int rw) +{ + struct ata_device *dev = qc->dev; + struct ata_port *ap = dev->link->ap; + void __iomem *data_addr = ap->ioaddr.data_addr; + unsigned int words = buflen >> 1; + + /* Transfer multiple of 2 bytes */ + if (rw == READ) + raw_insw((u16 *)data_addr, (u16 *)buf, words); + else + raw_outsw((u16 *)data_addr, (u16 *)buf, words); + + /* Transfer trailing byte, if any. */ + if (unlikely(buflen & 0x01)) { + unsigned char pad[2] = { }; + + /* Point buf to the tail of buffer */ + buf += buflen - 1; + + if (rw == READ) { + raw_insw((u16 *)data_addr, (u16 *)pad, 1); + *buf = pad[0]; + } else { + pad[0] = *buf; + raw_outsw((u16 *)data_addr, (u16 *)pad, 1); + } + words++; + } + + return words << 1; +} + +/* + * Provide our own set_mode() as we don't want to change anything that has + * already been configured.. + */ +static int pata_buddha_set_mode(struct ata_link *link, + struct ata_device **unused) +{ + struct ata_device *dev; + + ata_for_each_dev(dev, link, ENABLED) { + /* We don't really care */ + dev->pio_mode = dev->xfer_mode = XFER_PIO_0; + dev->xfer_shift = ATA_SHIFT_PIO; + dev->flags |= ATA_DFLAG_PIO; + ata_dev_info(dev, "configured for PIO\n"); + } + return 0; +} + +static bool pata_buddha_irq_check(struct ata_port *ap) +{ + u8 ch; + + ch = z_readb((unsigned long)ap->private_data); + + return !!(ch & 0x80); +} + +static void pata_xsurf_irq_clear(struct ata_port *ap) +{ + z_writeb(0, (unsigned long)ap->private_data); +} + +static struct ata_port_operations pata_buddha_ops = { + .inherits = &ata_sff_port_ops, + .sff_data_xfer = pata_buddha_data_xfer, + .sff_irq_check = pata_buddha_irq_check, + .cable_detect = ata_cable_unknown, + .set_mode = pata_buddha_set_mode, +}; + +static struct ata_port_operations pata_xsurf_ops = { + .inherits = &ata_sff_port_ops, + .sff_data_xfer = pata_buddha_data_xfer, + .sff_irq_check = pata_buddha_irq_check, + .sff_irq_clear = pata_xsurf_irq_clear, + .cable_detect = ata_cable_unknown, + .set_mode = pata_buddha_set_mode, +}; + +static int pata_buddha_probe(struct zorro_dev *z, + const struct zorro_device_id *ent) +{ + static const char * const board_name[] = { + "Buddha", "Catweasel", "X-Surf" + }; + struct ata_host *host; + void __iomem *buddha_board; + unsigned long board; + unsigned int type = ent->driver_data; + unsigned int nr_ports = (type == BOARD_CATWEASEL) ? 3 : 2; + void *old_drvdata; + int i; + + dev_info(&z->dev, "%s IDE controller\n", board_name[type]); + + board = z->resource.start; + + if (type != BOARD_XSURF) { + if (!devm_request_mem_region(&z->dev, + board + BUDDHA_BASE1, + 0x800, DRV_NAME)) + return -ENXIO; + } else { + if (!devm_request_mem_region(&z->dev, + board + XSURF_BASE1, + 0x1000, DRV_NAME)) + return -ENXIO; + if (!devm_request_mem_region(&z->dev, + board + XSURF_BASE2, + 0x1000, DRV_NAME)) { + } + } + + /* Workaround for X-Surf: Save drvdata in case zorro8390 has set it */ + if (type == BOARD_XSURF) + old_drvdata = dev_get_drvdata(&z->dev); + + /* allocate host */ + host = ata_host_alloc(&z->dev, nr_ports); + if (type == BOARD_XSURF) + dev_set_drvdata(&z->dev, old_drvdata); + if (!host) + return -ENXIO; + + buddha_board = ZTWO_VADDR(board); + + /* enable the board IRQ on Buddha/Catweasel */ + if (type != BOARD_XSURF) + z_writeb(0, buddha_board + BUDDHA_IRQ_MR); + + for (i = 0; i < nr_ports; i++) { + struct ata_port *ap = host->ports[i]; + void __iomem *base, *irqport; + unsigned long ctl = 0; + + if (type != BOARD_XSURF) { + ap->ops = &pata_buddha_ops; + base = buddha_board + buddha_bases[i]; + ctl = BUDDHA_CONTROL; + irqport = buddha_board + BUDDHA_IRQ + i * 0x40; + } else { + ap->ops = &pata_xsurf_ops; + base = buddha_board + xsurf_bases[i]; + /* X-Surf has no CS1* (Control/AltStat) */ + irqport = buddha_board + XSURF_IRQ; + } + + ap->pio_mask = ATA_PIO4; + ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY; + + ap->ioaddr.data_addr = base; + ap->ioaddr.error_addr = base + 2 + 1 * 4; + ap->ioaddr.feature_addr = base + 2 + 1 * 4; + ap->ioaddr.nsect_addr = base + 2 + 2 * 4; + ap->ioaddr.lbal_addr = base + 2 + 3 * 4; + ap->ioaddr.lbam_addr = base + 2 + 4 * 4; + ap->ioaddr.lbah_addr = base + 2 + 5 * 4; + ap->ioaddr.device_addr = base + 2 + 6 * 4; + ap->ioaddr.status_addr = base + 2 + 7 * 4; + ap->ioaddr.command_addr = base + 2 + 7 * 4; + + if (ctl) { + ap->ioaddr.altstatus_addr = base + ctl; + ap->ioaddr.ctl_addr = base + ctl; + } + + ap->private_data = (void *)irqport; + + ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", board, + ctl ? board + buddha_bases[i] + ctl : 0); + } + + ata_host_activate(host, IRQ_AMIGA_PORTS, ata_sff_interrupt, + IRQF_SHARED, &pata_buddha_sht); + + return 0; +} + +static void pata_buddha_remove(struct zorro_dev *z) +{ + struct ata_host *host = dev_get_drvdata(&z->dev); + + ata_host_detach(host); +} + +static const struct zorro_device_id pata_buddha_zorro_tbl[] = { + { ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA, BOARD_BUDDHA}, + { ZORRO_PROD_INDIVIDUAL_COMPUTERS_CATWEASEL, BOARD_CATWEASEL}, + { 0 } +}; +MODULE_DEVICE_TABLE(zorro, pata_buddha_zorro_tbl); + +static struct zorro_driver pata_buddha_driver = { + .name = "pata_buddha", + .id_table = pata_buddha_zorro_tbl, + .probe = pata_buddha_probe, + .remove = pata_buddha_remove, +}; + +/* + * We cannot have a modalias for X-Surf boards, as it competes with the + * zorro8390 network driver. As a stopgap measure until we have proper + * MFD support for this board, we manually attach to it late after Zorro + * has enumerated its boards. + */ +static int __init pata_buddha_late_init(void) +{ + struct zorro_dev *z = NULL; + + /* Auto-bind to regular boards */ + zorro_register_driver(&pata_buddha_driver); + + /* Manually bind to all X-Surf boards */ + while ((z = zorro_find_device(ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, z))) { + static struct zorro_device_id xsurf_ent = { + ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, BOARD_XSURF + }; + + pata_buddha_probe(z, &xsurf_ent); + } + + return 0; +} +late_initcall(pata_buddha_late_init); + +MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); +MODULE_DESCRIPTION("low-level driver for Buddha/Catweasel/X-Surf PATA"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(DRV_VERSION); -- cgit v1.2.3