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/char/tpm/tpm_atmel.c | 235 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 235 insertions(+) create mode 100644 drivers/char/tpm/tpm_atmel.c (limited to 'drivers/char/tpm/tpm_atmel.c') diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c new file mode 100644 index 000000000..54a6750a6 --- /dev/null +++ b/drivers/char/tpm/tpm_atmel.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2004 IBM Corporation + * + * Authors: + * Leendert van Doorn + * Dave Safford + * Reiner Sailer + * Kylene Hall + * + * Maintained by: + * + * Device driver for TCG/TCPA TPM (trusted platform module). + * Specifications at www.trustedcomputinggroup.org + */ + +#include "tpm.h" +#include "tpm_atmel.h" + +/* write status bits */ +enum tpm_atmel_write_status { + ATML_STATUS_ABORT = 0x01, + ATML_STATUS_LASTBYTE = 0x04 +}; +/* read status bits */ +enum tpm_atmel_read_status { + ATML_STATUS_BUSY = 0x01, + ATML_STATUS_DATA_AVAIL = 0x02, + ATML_STATUS_REWRITE = 0x04, + ATML_STATUS_READY = 0x08 +}; + +static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count) +{ + struct tpm_atmel_priv *priv = dev_get_drvdata(&chip->dev); + u8 status, *hdr = buf; + u32 size; + int i; + __be32 *native_size; + + /* start reading header */ + if (count < 6) + return -EIO; + + for (i = 0; i < 6; i++) { + status = ioread8(priv->iobase + 1); + if ((status & ATML_STATUS_DATA_AVAIL) == 0) { + dev_err(&chip->dev, "error reading header\n"); + return -EIO; + } + *buf++ = ioread8(priv->iobase); + } + + /* size of the data received */ + native_size = (__force __be32 *) (hdr + 2); + size = be32_to_cpu(*native_size); + + if (count < size) { + dev_err(&chip->dev, + "Recv size(%d) less than available space\n", size); + for (; i < size; i++) { /* clear the waiting data anyway */ + status = ioread8(priv->iobase + 1); + if ((status & ATML_STATUS_DATA_AVAIL) == 0) { + dev_err(&chip->dev, "error reading data\n"); + return -EIO; + } + } + return -EIO; + } + + /* read all the data available */ + for (; i < size; i++) { + status = ioread8(priv->iobase + 1); + if ((status & ATML_STATUS_DATA_AVAIL) == 0) { + dev_err(&chip->dev, "error reading data\n"); + return -EIO; + } + *buf++ = ioread8(priv->iobase); + } + + /* make sure data available is gone */ + status = ioread8(priv->iobase + 1); + + if (status & ATML_STATUS_DATA_AVAIL) { + dev_err(&chip->dev, "data available is stuck\n"); + return -EIO; + } + + return size; +} + +static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count) +{ + struct tpm_atmel_priv *priv = dev_get_drvdata(&chip->dev); + int i; + + dev_dbg(&chip->dev, "tpm_atml_send:\n"); + for (i = 0; i < count; i++) { + dev_dbg(&chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]); + iowrite8(buf[i], priv->iobase); + } + + return 0; +} + +static void tpm_atml_cancel(struct tpm_chip *chip) +{ + struct tpm_atmel_priv *priv = dev_get_drvdata(&chip->dev); + + iowrite8(ATML_STATUS_ABORT, priv->iobase + 1); +} + +static u8 tpm_atml_status(struct tpm_chip *chip) +{ + struct tpm_atmel_priv *priv = dev_get_drvdata(&chip->dev); + + return ioread8(priv->iobase + 1); +} + +static bool tpm_atml_req_canceled(struct tpm_chip *chip, u8 status) +{ + return (status == ATML_STATUS_READY); +} + +static const struct tpm_class_ops tpm_atmel = { + .recv = tpm_atml_recv, + .send = tpm_atml_send, + .cancel = tpm_atml_cancel, + .status = tpm_atml_status, + .req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL, + .req_complete_val = ATML_STATUS_DATA_AVAIL, + .req_canceled = tpm_atml_req_canceled, +}; + +static struct platform_device *pdev; + +static void atml_plat_remove(void) +{ + struct tpm_chip *chip = dev_get_drvdata(&pdev->dev); + struct tpm_atmel_priv *priv = dev_get_drvdata(&chip->dev); + + tpm_chip_unregister(chip); + if (priv->have_region) + atmel_release_region(priv->base, priv->region_size); + atmel_put_base_addr(priv->iobase); + platform_device_unregister(pdev); +} + +static SIMPLE_DEV_PM_OPS(tpm_atml_pm, tpm_pm_suspend, tpm_pm_resume); + +static struct platform_driver atml_drv = { + .driver = { + .name = "tpm_atmel", + .pm = &tpm_atml_pm, + }, +}; + +static int __init init_atmel(void) +{ + int rc = 0; + void __iomem *iobase = NULL; + int have_region, region_size; + unsigned long base; + struct tpm_chip *chip; + struct tpm_atmel_priv *priv; + + rc = platform_driver_register(&atml_drv); + if (rc) + return rc; + + if ((iobase = atmel_get_base_addr(&base, ®ion_size)) == NULL) { + rc = -ENODEV; + goto err_unreg_drv; + } + + have_region = + (atmel_request_region + (base, region_size, "tpm_atmel0") == NULL) ? 0 : 1; + + pdev = platform_device_register_simple("tpm_atmel", -1, NULL, 0); + if (IS_ERR(pdev)) { + rc = PTR_ERR(pdev); + goto err_rel_reg; + } + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + rc = -ENOMEM; + goto err_unreg_dev; + } + + priv->iobase = iobase; + priv->base = base; + priv->have_region = have_region; + priv->region_size = region_size; + + chip = tpmm_chip_alloc(&pdev->dev, &tpm_atmel); + if (IS_ERR(chip)) { + rc = PTR_ERR(chip); + goto err_unreg_dev; + } + + dev_set_drvdata(&chip->dev, priv); + + rc = tpm_chip_register(chip); + if (rc) + goto err_unreg_dev; + + return 0; + +err_unreg_dev: + platform_device_unregister(pdev); +err_rel_reg: + atmel_put_base_addr(iobase); + if (have_region) + atmel_release_region(base, + region_size); +err_unreg_drv: + platform_driver_unregister(&atml_drv); + return rc; +} + +static void __exit cleanup_atmel(void) +{ + platform_driver_unregister(&atml_drv); + atml_plat_remove(); +} + +module_init(init_atmel); +module_exit(cleanup_atmel); + +MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)"); +MODULE_DESCRIPTION("TPM Driver"); +MODULE_VERSION("2.0"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3