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/mtd/nand/raw/sharpsl.c | 246 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 246 insertions(+) create mode 100644 drivers/mtd/nand/raw/sharpsl.c (limited to 'drivers/mtd/nand/raw/sharpsl.c') diff --git a/drivers/mtd/nand/raw/sharpsl.c b/drivers/mtd/nand/raw/sharpsl.c new file mode 100644 index 000000000..52ce51625 --- /dev/null +++ b/drivers/mtd/nand/raw/sharpsl.c @@ -0,0 +1,246 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2004 Richard Purdie + * Copyright (C) 2008 Dmitry Baryshkov + * + * Based on Sharp's NAND driver sharp_sl.c + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct sharpsl_nand { + struct nand_controller controller; + struct nand_chip chip; + + void __iomem *io; +}; + +static inline struct sharpsl_nand *mtd_to_sharpsl(struct mtd_info *mtd) +{ + return container_of(mtd_to_nand(mtd), struct sharpsl_nand, chip); +} + +/* register offset */ +#define ECCLPLB 0x00 /* line parity 7 - 0 bit */ +#define ECCLPUB 0x04 /* line parity 15 - 8 bit */ +#define ECCCP 0x08 /* column parity 5 - 0 bit */ +#define ECCCNTR 0x0C /* ECC byte counter */ +#define ECCCLRR 0x10 /* cleare ECC */ +#define FLASHIO 0x14 /* Flash I/O */ +#define FLASHCTL 0x18 /* Flash Control */ + +/* Flash control bit */ +#define FLRYBY (1 << 5) +#define FLCE1 (1 << 4) +#define FLWP (1 << 3) +#define FLALE (1 << 2) +#define FLCLE (1 << 1) +#define FLCE0 (1 << 0) + +/* + * hardware specific access to control-lines + * ctrl: + * NAND_CNE: bit 0 -> ! bit 0 & 4 + * NAND_CLE: bit 1 -> bit 1 + * NAND_ALE: bit 2 -> bit 2 + * + */ +static void sharpsl_nand_hwcontrol(struct nand_chip *chip, int cmd, + unsigned int ctrl) +{ + struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip)); + + if (ctrl & NAND_CTRL_CHANGE) { + unsigned char bits = ctrl & 0x07; + + bits |= (ctrl & 0x01) << 4; + + bits ^= 0x11; + + writeb((readb(sharpsl->io + FLASHCTL) & ~0x17) | bits, sharpsl->io + FLASHCTL); + } + + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->legacy.IO_ADDR_W); +} + +static int sharpsl_nand_dev_ready(struct nand_chip *chip) +{ + struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip)); + return !((readb(sharpsl->io + FLASHCTL) & FLRYBY) == 0); +} + +static void sharpsl_nand_enable_hwecc(struct nand_chip *chip, int mode) +{ + struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip)); + writeb(0, sharpsl->io + ECCCLRR); +} + +static int sharpsl_nand_calculate_ecc(struct nand_chip *chip, + const u_char * dat, u_char * ecc_code) +{ + struct sharpsl_nand *sharpsl = mtd_to_sharpsl(nand_to_mtd(chip)); + ecc_code[0] = ~readb(sharpsl->io + ECCLPUB); + ecc_code[1] = ~readb(sharpsl->io + ECCLPLB); + ecc_code[2] = (~readb(sharpsl->io + ECCCP) << 2) | 0x03; + return readb(sharpsl->io + ECCCNTR) != 0; +} + +static int sharpsl_attach_chip(struct nand_chip *chip) +{ + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) + return 0; + + chip->ecc.size = 256; + chip->ecc.bytes = 3; + chip->ecc.strength = 1; + chip->ecc.hwctl = sharpsl_nand_enable_hwecc; + chip->ecc.calculate = sharpsl_nand_calculate_ecc; + chip->ecc.correct = rawnand_sw_hamming_correct; + + return 0; +} + +static const struct nand_controller_ops sharpsl_ops = { + .attach_chip = sharpsl_attach_chip, +}; + +/* + * Main initialization routine + */ +static int sharpsl_nand_probe(struct platform_device *pdev) +{ + struct nand_chip *this; + struct mtd_info *mtd; + struct resource *r; + int err = 0; + struct sharpsl_nand *sharpsl; + struct sharpsl_nand_platform_data *data = dev_get_platdata(&pdev->dev); + + if (!data) { + dev_err(&pdev->dev, "no platform data!\n"); + return -EINVAL; + } + + /* Allocate memory for MTD device structure and private data */ + sharpsl = kzalloc(sizeof(struct sharpsl_nand), GFP_KERNEL); + if (!sharpsl) + return -ENOMEM; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + dev_err(&pdev->dev, "no io memory resource defined!\n"); + err = -ENODEV; + goto err_get_res; + } + + /* map physical address */ + sharpsl->io = ioremap(r->start, resource_size(r)); + if (!sharpsl->io) { + dev_err(&pdev->dev, "ioremap to access Sharp SL NAND chip failed\n"); + err = -EIO; + goto err_ioremap; + } + + /* Get pointer to private data */ + this = (struct nand_chip *)(&sharpsl->chip); + + nand_controller_init(&sharpsl->controller); + sharpsl->controller.ops = &sharpsl_ops; + this->controller = &sharpsl->controller; + + /* Link the private data with the MTD structure */ + mtd = nand_to_mtd(this); + mtd->dev.parent = &pdev->dev; + mtd_set_ooblayout(mtd, data->ecc_layout); + + platform_set_drvdata(pdev, sharpsl); + + /* + * PXA initialize + */ + writeb(readb(sharpsl->io + FLASHCTL) | FLWP, sharpsl->io + FLASHCTL); + + /* Set address of NAND IO lines */ + this->legacy.IO_ADDR_R = sharpsl->io + FLASHIO; + this->legacy.IO_ADDR_W = sharpsl->io + FLASHIO; + /* Set address of hardware control function */ + this->legacy.cmd_ctrl = sharpsl_nand_hwcontrol; + this->legacy.dev_ready = sharpsl_nand_dev_ready; + /* 15 us command delay time */ + this->legacy.chip_delay = 15; + this->badblock_pattern = data->badblock_pattern; + + /* Scan to find existence of the device */ + err = nand_scan(this, 1); + if (err) + goto err_scan; + + /* Register the partitions */ + mtd->name = "sharpsl-nand"; + + err = mtd_device_parse_register(mtd, data->part_parsers, NULL, + data->partitions, data->nr_partitions); + if (err) + goto err_add; + + /* Return happy */ + return 0; + +err_add: + nand_cleanup(this); + +err_scan: + iounmap(sharpsl->io); +err_ioremap: +err_get_res: + kfree(sharpsl); + return err; +} + +/* + * Clean up routine + */ +static int sharpsl_nand_remove(struct platform_device *pdev) +{ + struct sharpsl_nand *sharpsl = platform_get_drvdata(pdev); + struct nand_chip *chip = &sharpsl->chip; + int ret; + + /* Unregister device */ + ret = mtd_device_unregister(nand_to_mtd(chip)); + WARN_ON(ret); + + /* Release resources */ + nand_cleanup(chip); + + iounmap(sharpsl->io); + + /* Free the driver's structure */ + kfree(sharpsl); + + return 0; +} + +static struct platform_driver sharpsl_nand_driver = { + .driver = { + .name = "sharpsl-nand", + }, + .probe = sharpsl_nand_probe, + .remove = sharpsl_nand_remove, +}; + +module_platform_driver(sharpsl_nand_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Richard Purdie "); +MODULE_DESCRIPTION("Device specific logic for NAND flash on Sharp SL-C7xx Series"); -- cgit v1.2.3