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/i915/i915_params.c | 285 +++++++++++++++++++++++++++++++++++++ 1 file changed, 285 insertions(+) create mode 100644 drivers/gpu/drm/i915/i915_params.c (limited to 'drivers/gpu/drm/i915/i915_params.c') diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c new file mode 100644 index 000000000..d1e4d528c --- /dev/null +++ b/drivers/gpu/drm/i915/i915_params.c @@ -0,0 +1,285 @@ +/* + * Copyright © 2014 Intel Corporation + * + * 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, sub license, 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 (including the + * next paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 + +#include + +#include "i915_params.h" +#include "i915_drv.h" + +DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, + "DRM_UT_CORE", + "DRM_UT_DRIVER", + "DRM_UT_KMS", + "DRM_UT_PRIME", + "DRM_UT_ATOMIC", + "DRM_UT_VBL", + "DRM_UT_STATE", + "DRM_UT_LEASE", + "DRM_UT_DP", + "DRM_UT_DRMRES"); + +#define i915_param_named(name, T, perm, desc) \ + module_param_named(name, i915_modparams.name, T, perm); \ + MODULE_PARM_DESC(name, desc) +#define i915_param_named_unsafe(name, T, perm, desc) \ + module_param_named_unsafe(name, i915_modparams.name, T, perm); \ + MODULE_PARM_DESC(name, desc) + +struct i915_params i915_modparams __read_mostly = { +#define MEMBER(T, member, value, ...) .member = (value), + I915_PARAMS_FOR_EACH(MEMBER) +#undef MEMBER +}; + +/* + * Note: As a rule, keep module parameter sysfs permissions read-only + * 0400. Runtime changes are only supported through i915 debugfs. + * + * For any exceptions requiring write access and runtime changes through module + * parameter sysfs, prevent debugfs file creation by setting the parameter's + * debugfs mode to 0. + */ + +i915_param_named(modeset, int, 0400, + "Use kernel modesetting [KMS] (0=disable, " + "1=on, -1=force vga console preference [default])"); + +i915_param_named_unsafe(enable_dc, int, 0400, + "Enable power-saving display C-states. " + "(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6; " + "3=up to DC5 with DC3CO; 4=up to DC6 with DC3CO)"); + +i915_param_named_unsafe(enable_fbc, int, 0400, + "Enable frame buffer compression for power savings " + "(default: -1 (use per-chip default))"); + +i915_param_named_unsafe(lvds_channel_mode, int, 0400, + "Specify LVDS channel mode " + "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)"); + +i915_param_named_unsafe(panel_use_ssc, int, 0400, + "Use Spread Spectrum Clock with panels [LVDS/eDP] " + "(default: auto from VBT)"); + +i915_param_named_unsafe(vbt_sdvo_panel_type, int, 0400, + "Override/Ignore selection of SDVO panel mode in the VBT " + "(-2=ignore, -1=auto [default], index in VBT BIOS table)"); + +i915_param_named_unsafe(reset, uint, 0400, + "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])"); + +i915_param_named_unsafe(vbt_firmware, charp, 0400, + "Load VBT from specified file under /lib/firmware"); + +#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) +i915_param_named(error_capture, bool, 0400, + "Record the GPU state following a hang. " + "This information in /sys/class/drm/card/error is vital for " + "triaging and debugging hangs."); +#endif + +i915_param_named_unsafe(enable_hangcheck, bool, 0400, + "Periodically check GPU activity for detecting hangs. " + "WARNING: Disabling this can cause system wide hangs. " + "(default: true)"); + +i915_param_named_unsafe(enable_psr, int, 0400, + "Enable PSR " + "(0=disabled, 1=enable up to PSR1, 2=enable up to PSR2) " + "Default: -1 (use per-chip default)"); + +i915_param_named(psr_safest_params, bool, 0400, + "Replace PSR VBT parameters by the safest and not optimal ones. This " + "is helpful to detect if PSR issues are related to bad values set in " + " VBT. (0=use VBT parameters, 1=use safest parameters)"); + +i915_param_named_unsafe(enable_psr2_sel_fetch, bool, 0400, + "Enable PSR2 selective fetch " + "(0=disabled, 1=enabled) " + "Default: 0"); + +i915_param_named_unsafe(force_probe, charp, 0400, + "Force probe the driver for specified devices. " + "See CONFIG_DRM_I915_FORCE_PROBE for details."); + +i915_param_named_unsafe(disable_power_well, int, 0400, + "Disable display power wells when possible " + "(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)"); + +i915_param_named_unsafe(enable_ips, int, 0400, "Enable IPS (default: true)"); + +i915_param_named(fastboot, int, 0400, + "Try to skip unnecessary mode sets at boot time " + "(0=disabled, 1=enabled) " + "Default: -1 (use per-chip default)"); + +i915_param_named_unsafe(load_detect_test, bool, 0400, + "Force-enable the VGA load detect code for testing (default:false). " + "For developers only."); + +i915_param_named_unsafe(force_reset_modeset_test, bool, 0400, + "Force a modeset during gpu reset for testing (default:false). " + "For developers only."); + +i915_param_named_unsafe(invert_brightness, int, 0400, + "Invert backlight brightness " + "(-1 force normal, 0 machine defaults, 1 force inversion), please " + "report PCI device ID, subsystem vendor and subsystem device ID " + "to dri-devel@lists.freedesktop.org, if your machine needs it. " + "It will then be included in an upcoming module version."); + +i915_param_named(disable_display, bool, 0400, + "Disable display (default: false)"); + +i915_param_named(memtest, bool, 0400, + "Perform a read/write test of all device memory on module load (default: off)"); + +i915_param_named(mmio_debug, int, 0400, + "Enable the MMIO debug code for the first N failures (default: off). " + "This may negatively affect performance."); + +/* Special case writable file */ +i915_param_named(verbose_state_checks, bool, 0600, + "Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions."); + +i915_param_named_unsafe(nuclear_pageflip, bool, 0400, + "Force enable atomic functionality on platforms that don't have full support yet."); + +/* WA to get away with the default setting in VBT for early platforms.Will be removed */ +i915_param_named_unsafe(edp_vswing, int, 0400, + "Ignore/Override vswing pre-emph table selection from VBT " + "(0=use value from vbt [default], 1=low power swing(200mV)," + "2=default swing(400mV))"); + +i915_param_named_unsafe(enable_guc, int, 0400, + "Enable GuC load for GuC submission and/or HuC load. " + "Required functionality can be selected using bitmask values. " + "(-1=auto [default], 0=disable, 1=GuC submission, 2=HuC load)"); + +i915_param_named(guc_log_level, int, 0400, + "GuC firmware logging level. Requires GuC to be loaded. " + "(-1=auto [default], 0=disable, 1..4=enable with verbosity min..max)"); + +i915_param_named_unsafe(guc_firmware_path, charp, 0400, + "GuC firmware path to use instead of the default one"); + +i915_param_named_unsafe(huc_firmware_path, charp, 0400, + "HuC firmware path to use instead of the default one"); + +i915_param_named_unsafe(dmc_firmware_path, charp, 0400, + "DMC firmware path to use instead of the default one"); + +i915_param_named_unsafe(enable_dp_mst, bool, 0400, + "Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)"); + +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG) +i915_param_named_unsafe(inject_probe_failure, uint, 0400, + "Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)"); +#endif + +i915_param_named(enable_dpcd_backlight, int, 0400, + "Enable support for DPCD backlight control" + "(-1=use per-VBT LFP backlight type setting [default], 0=disabled, 1=enable, 2=force VESA interface, 3=force Intel interface)"); + +#if IS_ENABLED(CONFIG_DRM_I915_GVT) +i915_param_named(enable_gvt, bool, 0400, + "Enable support for Intel GVT-g graphics virtualization host support(default:false)"); +#endif + +#if CONFIG_DRM_I915_REQUEST_TIMEOUT +i915_param_named_unsafe(request_timeout_ms, uint, 0600, + "Default request/fence/batch buffer expiration timeout."); +#endif + +i915_param_named_unsafe(lmem_size, uint, 0400, + "Set the lmem size(in MiB) for each region. (default: 0, all memory)"); +i915_param_named_unsafe(lmem_bar_size, uint, 0400, + "Set the lmem bar size(in MiB)."); + +static __always_inline void _print_param(struct drm_printer *p, + const char *name, + const char *type, + const void *x) +{ + if (!__builtin_strcmp(type, "bool")) + drm_printf(p, "i915.%s=%s\n", name, + str_yes_no(*(const bool *)x)); + else if (!__builtin_strcmp(type, "int")) + drm_printf(p, "i915.%s=%d\n", name, *(const int *)x); + else if (!__builtin_strcmp(type, "unsigned int")) + drm_printf(p, "i915.%s=%u\n", name, *(const unsigned int *)x); + else if (!__builtin_strcmp(type, "unsigned long")) + drm_printf(p, "i915.%s=%lu\n", name, *(const unsigned long *)x); + else if (!__builtin_strcmp(type, "char *")) + drm_printf(p, "i915.%s=%s\n", name, *(const char **)x); + else + WARN_ONCE(1, "no printer defined for param type %s (i915.%s)\n", + type, name); +} + +/** + * i915_params_dump - dump i915 modparams + * @params: i915 modparams + * @p: the &drm_printer + * + * Pretty printer for i915 modparams. + */ +void i915_params_dump(const struct i915_params *params, struct drm_printer *p) +{ +#define PRINT(T, x, ...) _print_param(p, #x, #T, ¶ms->x); + I915_PARAMS_FOR_EACH(PRINT); +#undef PRINT +} + +static __always_inline void dup_param(const char *type, void *x) +{ + if (!__builtin_strcmp(type, "char *")) + *(void **)x = kstrdup(*(void **)x, GFP_ATOMIC); +} + +void i915_params_copy(struct i915_params *dest, const struct i915_params *src) +{ + *dest = *src; +#define DUP(T, x, ...) dup_param(#T, &dest->x); + I915_PARAMS_FOR_EACH(DUP); +#undef DUP +} + +static __always_inline void free_param(const char *type, void *x) +{ + if (!__builtin_strcmp(type, "char *")) { + kfree(*(void **)x); + *(void **)x = NULL; + } +} + +/* free the allocated members, *not* the passed in params itself */ +void i915_params_free(struct i915_params *params) +{ +#define FREE(T, x, ...) free_param(#T, ¶ms->x); + I915_PARAMS_FOR_EACH(FREE); +#undef FREE +} -- cgit v1.2.3