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/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c | 395 +++++++++++++++++++++++++++++ 1 file changed, 395 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c new file mode 100644 index 000000000..468a67b30 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c @@ -0,0 +1,395 @@ +/* + * Copyright 2022 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include "amdgpu.h" +#include "amdgpu_psp_ta.h" + +#if defined(CONFIG_DEBUG_FS) + +static ssize_t ta_if_load_debugfs_write(struct file *fp, const char *buf, + size_t len, loff_t *off); +static ssize_t ta_if_unload_debugfs_write(struct file *fp, const char *buf, + size_t len, loff_t *off); +static ssize_t ta_if_invoke_debugfs_write(struct file *fp, const char *buf, + size_t len, loff_t *off); + +static uint32_t get_bin_version(const uint8_t *bin) +{ + const struct common_firmware_header *hdr = + (const struct common_firmware_header *)bin; + + return hdr->ucode_version; +} + +static int prep_ta_mem_context(struct ta_mem_context *mem_context, + uint8_t *shared_buf, + uint32_t shared_buf_len) +{ + if (mem_context->shared_mem_size < shared_buf_len) + return -EINVAL; + memset(mem_context->shared_buf, 0, mem_context->shared_mem_size); + memcpy((void *)mem_context->shared_buf, shared_buf, shared_buf_len); + + return 0; +} + +static bool is_ta_type_valid(enum ta_type_id ta_type) +{ + switch (ta_type) { + case TA_TYPE_RAS: + return true; + default: + return false; + } +} + +static const struct ta_funcs ras_ta_funcs = { + .fn_ta_initialize = psp_ras_initialize, + .fn_ta_invoke = psp_ras_invoke, + .fn_ta_terminate = psp_ras_terminate +}; + +static void set_ta_context_funcs(struct psp_context *psp, + enum ta_type_id ta_type, + struct ta_context **pcontext) +{ + switch (ta_type) { + case TA_TYPE_RAS: + *pcontext = &psp->ras_context.context; + psp->ta_funcs = &ras_ta_funcs; + break; + default: + break; + } +} + +static const struct file_operations ta_load_debugfs_fops = { + .write = ta_if_load_debugfs_write, + .llseek = default_llseek, + .owner = THIS_MODULE +}; + +static const struct file_operations ta_unload_debugfs_fops = { + .write = ta_if_unload_debugfs_write, + .llseek = default_llseek, + .owner = THIS_MODULE +}; + +static const struct file_operations ta_invoke_debugfs_fops = { + .write = ta_if_invoke_debugfs_write, + .llseek = default_llseek, + .owner = THIS_MODULE +}; + +/* + * DOC: AMDGPU TA debugfs interfaces + * + * Three debugfs interfaces can be opened by a program to + * load/invoke/unload TA, + * + * - /sys/kernel/debug/dri//ta_if/ta_load + * - /sys/kernel/debug/dri//ta_if/ta_invoke + * - /sys/kernel/debug/dri//ta_if/ta_unload + * + * How to use the interfaces in a program? + * + * A program needs to provide transmit buffer to the interfaces + * and will receive buffer from the interfaces below, + * + * - For TA load debugfs interface: + * Transmit buffer: + * - TA type (4bytes) + * - TA bin length (4bytes) + * - TA bin + * Receive buffer: + * - TA ID (4bytes) + * + * - For TA invoke debugfs interface: + * Transmit buffer: + * - TA type (4bytes) + * - TA ID (4bytes) + * - TA CMD ID (4bytes) + * - TA shard buf length + * (4bytes, value not beyond TA shared memory size) + * - TA shared buf + * Receive buffer: + * - TA shared buf + * + * - For TA unload debugfs interface: + * Transmit buffer: + * - TA type (4bytes) + * - TA ID (4bytes) + */ + +static ssize_t ta_if_load_debugfs_write(struct file *fp, const char *buf, size_t len, loff_t *off) +{ + uint32_t ta_type = 0; + uint32_t ta_bin_len = 0; + uint8_t *ta_bin = NULL; + uint32_t copy_pos = 0; + int ret = 0; + + struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(fp)->i_private; + struct psp_context *psp = &adev->psp; + struct ta_context *context = NULL; + + if (!buf) + return -EINVAL; + + ret = copy_from_user((void *)&ta_type, &buf[copy_pos], sizeof(uint32_t)); + if (ret || (!is_ta_type_valid(ta_type))) + return -EFAULT; + + copy_pos += sizeof(uint32_t); + + ret = copy_from_user((void *)&ta_bin_len, &buf[copy_pos], sizeof(uint32_t)); + if (ret) + return -EFAULT; + + copy_pos += sizeof(uint32_t); + + ta_bin = kzalloc(ta_bin_len, GFP_KERNEL); + if (!ta_bin) + return -ENOMEM; + if (copy_from_user((void *)ta_bin, &buf[copy_pos], ta_bin_len)) { + ret = -EFAULT; + goto err_free_bin; + } + + /* Set TA context and functions */ + set_ta_context_funcs(psp, ta_type, &context); + + if (!psp->ta_funcs || !psp->ta_funcs->fn_ta_terminate) { + dev_err(adev->dev, "Unsupported function to terminate TA\n"); + ret = -EOPNOTSUPP; + goto err_free_bin; + } + + /* + * Allocate TA shared buf in case shared buf was freed + * due to loading TA failed before. + */ + if (!context->mem_context.shared_buf) { + ret = psp_ta_init_shared_buf(psp, &context->mem_context); + if (ret) { + ret = -ENOMEM; + goto err_free_bin; + } + } + + ret = psp_fn_ta_terminate(psp); + if (ret || context->resp_status) { + dev_err(adev->dev, + "Failed to unload embedded TA (%d) and status (0x%X)\n", + ret, context->resp_status); + if (!ret) + ret = -EINVAL; + goto err_free_ta_shared_buf; + } + + /* Prepare TA context for TA initialization */ + context->ta_type = ta_type; + context->bin_desc.fw_version = get_bin_version(ta_bin); + context->bin_desc.size_bytes = ta_bin_len; + context->bin_desc.start_addr = ta_bin; + + if (!psp->ta_funcs->fn_ta_initialize) { + dev_err(adev->dev, "Unsupported function to initialize TA\n"); + ret = -EOPNOTSUPP; + goto err_free_ta_shared_buf; + } + + ret = psp_fn_ta_initialize(psp); + if (ret || context->resp_status) { + dev_err(adev->dev, "Failed to load TA via debugfs (%d) and status (0x%X)\n", + ret, context->resp_status); + if (!ret) + ret = -EINVAL; + goto err_free_ta_shared_buf; + } + + if (copy_to_user((char *)buf, (void *)&context->session_id, sizeof(uint32_t))) + ret = -EFAULT; + +err_free_ta_shared_buf: + /* Only free TA shared buf when returns error code */ + if (ret && context->mem_context.shared_buf) + psp_ta_free_shared_buf(&context->mem_context); +err_free_bin: + kfree(ta_bin); + + return ret; +} + +static ssize_t ta_if_unload_debugfs_write(struct file *fp, const char *buf, size_t len, loff_t *off) +{ + uint32_t ta_type = 0; + uint32_t ta_id = 0; + uint32_t copy_pos = 0; + int ret = 0; + + struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(fp)->i_private; + struct psp_context *psp = &adev->psp; + struct ta_context *context = NULL; + + if (!buf) + return -EINVAL; + + ret = copy_from_user((void *)&ta_type, &buf[copy_pos], sizeof(uint32_t)); + if (ret || (!is_ta_type_valid(ta_type))) + return -EFAULT; + + copy_pos += sizeof(uint32_t); + + ret = copy_from_user((void *)&ta_id, &buf[copy_pos], sizeof(uint32_t)); + if (ret) + return -EFAULT; + + set_ta_context_funcs(psp, ta_type, &context); + context->session_id = ta_id; + + if (!psp->ta_funcs || !psp->ta_funcs->fn_ta_terminate) { + dev_err(adev->dev, "Unsupported function to terminate TA\n"); + return -EOPNOTSUPP; + } + + ret = psp_fn_ta_terminate(psp); + if (ret || context->resp_status) { + dev_err(adev->dev, "Failed to unload TA via debugfs (%d) and status (0x%X)\n", + ret, context->resp_status); + if (!ret) + ret = -EINVAL; + } + + if (context->mem_context.shared_buf) + psp_ta_free_shared_buf(&context->mem_context); + + return ret; +} + +static ssize_t ta_if_invoke_debugfs_write(struct file *fp, const char *buf, size_t len, loff_t *off) +{ + uint32_t ta_type = 0; + uint32_t ta_id = 0; + uint32_t cmd_id = 0; + uint32_t shared_buf_len = 0; + uint8_t *shared_buf = NULL; + uint32_t copy_pos = 0; + int ret = 0; + + struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(fp)->i_private; + struct psp_context *psp = &adev->psp; + struct ta_context *context = NULL; + + if (!buf) + return -EINVAL; + + ret = copy_from_user((void *)&ta_type, &buf[copy_pos], sizeof(uint32_t)); + if (ret) + return -EFAULT; + copy_pos += sizeof(uint32_t); + + ret = copy_from_user((void *)&ta_id, &buf[copy_pos], sizeof(uint32_t)); + if (ret) + return -EFAULT; + copy_pos += sizeof(uint32_t); + + ret = copy_from_user((void *)&cmd_id, &buf[copy_pos], sizeof(uint32_t)); + if (ret) + return -EFAULT; + copy_pos += sizeof(uint32_t); + + ret = copy_from_user((void *)&shared_buf_len, &buf[copy_pos], sizeof(uint32_t)); + if (ret) + return -EFAULT; + copy_pos += sizeof(uint32_t); + + shared_buf = kzalloc(shared_buf_len, GFP_KERNEL); + if (!shared_buf) + return -ENOMEM; + if (copy_from_user((void *)shared_buf, &buf[copy_pos], shared_buf_len)) { + ret = -EFAULT; + goto err_free_shared_buf; + } + + set_ta_context_funcs(psp, ta_type, &context); + + if (!context->initialized) { + dev_err(adev->dev, "TA is not initialized\n"); + ret = -EINVAL; + goto err_free_shared_buf; + } + + if (!psp->ta_funcs || !psp->ta_funcs->fn_ta_invoke) { + dev_err(adev->dev, "Unsupported function to invoke TA\n"); + ret = -EOPNOTSUPP; + goto err_free_shared_buf; + } + + context->session_id = ta_id; + + ret = prep_ta_mem_context(&context->mem_context, shared_buf, shared_buf_len); + if (ret) + goto err_free_shared_buf; + + ret = psp_fn_ta_invoke(psp, cmd_id); + if (ret || context->resp_status) { + dev_err(adev->dev, "Failed to invoke TA via debugfs (%d) and status (0x%X)\n", + ret, context->resp_status); + if (!ret) { + ret = -EINVAL; + goto err_free_shared_buf; + } + } + + if (copy_to_user((char *)buf, context->mem_context.shared_buf, shared_buf_len)) + ret = -EFAULT; + +err_free_shared_buf: + kfree(shared_buf); + + return ret; +} + +void amdgpu_ta_if_debugfs_init(struct amdgpu_device *adev) +{ + struct drm_minor *minor = adev_to_drm(adev)->primary; + + struct dentry *dir = debugfs_create_dir("ta_if", minor->debugfs_root); + + debugfs_create_file("ta_load", 0200, dir, adev, + &ta_load_debugfs_fops); + + debugfs_create_file("ta_unload", 0200, dir, + adev, &ta_unload_debugfs_fops); + + debugfs_create_file("ta_invoke", 0200, dir, + adev, &ta_invoke_debugfs_fops); +} + +#else +void amdgpu_ta_if_debugfs_init(struct amdgpu_device *adev) +{ + +} +#endif -- cgit v1.2.3