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/selftests/intel_uncore.c | 354 ++++++++++++++++++++++++++ 1 file changed, 354 insertions(+) create mode 100644 drivers/gpu/drm/i915/selftests/intel_uncore.c (limited to 'drivers/gpu/drm/i915/selftests/intel_uncore.c') diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c new file mode 100644 index 000000000..e4281508d --- /dev/null +++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c @@ -0,0 +1,354 @@ +/* + * Copyright © 2016 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, 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 (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 "../i915_selftest.h" + +static int intel_fw_table_check(const struct intel_forcewake_range *ranges, + unsigned int num_ranges, + bool is_watertight) +{ + unsigned int i; + s32 prev; + + for (i = 0, prev = -1; i < num_ranges; i++, ranges++) { + /* Check that the table is watertight */ + if (is_watertight && (prev + 1) != (s32)ranges->start) { + pr_err("%s: entry[%d]:(%x, %x) is not watertight to previous (%x)\n", + __func__, i, ranges->start, ranges->end, prev); + return -EINVAL; + } + + /* Check that the table never goes backwards */ + if (prev >= (s32)ranges->start) { + pr_err("%s: entry[%d]:(%x, %x) is less than the previous (%x)\n", + __func__, i, ranges->start, ranges->end, prev); + return -EINVAL; + } + + /* Check that the entry is valid */ + if (ranges->start >= ranges->end) { + pr_err("%s: entry[%d]:(%x, %x) has negative length\n", + __func__, i, ranges->start, ranges->end); + return -EINVAL; + } + + prev = ranges->end; + } + + return 0; +} + +static int intel_shadow_table_check(void) +{ + struct { + const struct i915_range *regs; + unsigned int size; + } range_lists[] = { + { gen8_shadowed_regs, ARRAY_SIZE(gen8_shadowed_regs) }, + { gen11_shadowed_regs, ARRAY_SIZE(gen11_shadowed_regs) }, + { gen12_shadowed_regs, ARRAY_SIZE(gen12_shadowed_regs) }, + { dg2_shadowed_regs, ARRAY_SIZE(dg2_shadowed_regs) }, + { pvc_shadowed_regs, ARRAY_SIZE(pvc_shadowed_regs) }, + { mtl_shadowed_regs, ARRAY_SIZE(mtl_shadowed_regs) }, + { xelpmp_shadowed_regs, ARRAY_SIZE(xelpmp_shadowed_regs) }, + }; + const struct i915_range *range; + unsigned int i, j; + s32 prev; + + for (j = 0; j < ARRAY_SIZE(range_lists); ++j) { + range = range_lists[j].regs; + for (i = 0, prev = -1; i < range_lists[j].size; i++, range++) { + if (range->end < range->start) { + pr_err("%s: range[%d]:(%06x-%06x) has end before start\n", + __func__, i, range->start, range->end); + return -EINVAL; + } + + if (prev >= (s32)range->start) { + pr_err("%s: range[%d]:(%06x-%06x) is before end of previous (%06x)\n", + __func__, i, range->start, range->end, prev); + return -EINVAL; + } + + if (range->start % 4) { + pr_err("%s: range[%d]:(%06x-%06x) has non-dword-aligned start\n", + __func__, i, range->start, range->end); + return -EINVAL; + } + + prev = range->end; + } + } + + return 0; +} + +int intel_uncore_mock_selftests(void) +{ + struct { + const struct intel_forcewake_range *ranges; + unsigned int num_ranges; + bool is_watertight; + } fw[] = { + { __vlv_fw_ranges, ARRAY_SIZE(__vlv_fw_ranges), false }, + { __chv_fw_ranges, ARRAY_SIZE(__chv_fw_ranges), false }, + { __gen9_fw_ranges, ARRAY_SIZE(__gen9_fw_ranges), true }, + { __gen11_fw_ranges, ARRAY_SIZE(__gen11_fw_ranges), true }, + { __gen12_fw_ranges, ARRAY_SIZE(__gen12_fw_ranges), true }, + { __xehp_fw_ranges, ARRAY_SIZE(__xehp_fw_ranges), true }, + { __pvc_fw_ranges, ARRAY_SIZE(__pvc_fw_ranges), true }, + { __mtl_fw_ranges, ARRAY_SIZE(__mtl_fw_ranges), true }, + { __xelpmp_fw_ranges, ARRAY_SIZE(__xelpmp_fw_ranges), true }, + }; + int err, i; + + for (i = 0; i < ARRAY_SIZE(fw); i++) { + err = intel_fw_table_check(fw[i].ranges, + fw[i].num_ranges, + fw[i].is_watertight); + if (err) + return err; + } + + err = intel_shadow_table_check(); + if (err) + return err; + + return 0; +} + +static int live_forcewake_ops(void *arg) +{ + static const struct reg { + const char *name; + u8 min_graphics_ver; + u8 max_graphics_ver; + unsigned long platforms; + unsigned int offset; + } registers[] = { + { + "RING_START", + 6, 7, + 0x38, + }, + { + "RING_MI_MODE", + 8, U8_MAX, + 0x9c, + } + }; + const struct reg *r; + struct intel_gt *gt = arg; + struct intel_uncore_forcewake_domain *domain; + struct intel_uncore *uncore = gt->uncore; + struct intel_engine_cs *engine; + enum intel_engine_id id; + intel_wakeref_t wakeref; + unsigned int tmp; + int err = 0; + + GEM_BUG_ON(gt->awake); + + /* vlv/chv with their pcu behave differently wrt reads */ + if (IS_VALLEYVIEW(gt->i915) || IS_CHERRYVIEW(gt->i915)) { + pr_debug("PCU fakes forcewake badly; skipping\n"); + return 0; + } + + /* + * Not quite as reliable across the gen as one would hope. + * + * Either our theory of operation is incorrect, or there remain + * external parties interfering with the powerwells. + * + * https://bugs.freedesktop.org/show_bug.cgi?id=110210 + */ + if (!IS_ENABLED(CONFIG_DRM_I915_SELFTEST_BROKEN)) + return 0; + + /* We have to pick carefully to get the exact behaviour we need */ + for (r = registers; r->name; r++) + if (IS_GRAPHICS_VER(gt->i915, r->min_graphics_ver, r->max_graphics_ver)) + break; + if (!r->name) { + pr_debug("Forcewaked register not known for %s; skipping\n", + intel_platform_name(INTEL_INFO(gt->i915)->platform)); + return 0; + } + + wakeref = intel_runtime_pm_get(uncore->rpm); + + for_each_fw_domain(domain, uncore, tmp) { + smp_store_mb(domain->active, false); + if (!hrtimer_cancel(&domain->timer)) + continue; + + intel_uncore_fw_release_timer(&domain->timer); + } + + for_each_engine(engine, gt, id) { + i915_reg_t mmio = _MMIO(engine->mmio_base + r->offset); + u32 __iomem *reg = uncore->regs + engine->mmio_base + r->offset; + enum forcewake_domains fw_domains; + u32 val; + + if (!engine->default_state) + continue; + + fw_domains = intel_uncore_forcewake_for_reg(uncore, mmio, + FW_REG_READ); + if (!fw_domains) + continue; + + for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) { + if (!domain->wake_count) + continue; + + pr_err("fw_domain %s still active, aborting test!\n", + intel_uncore_forcewake_domain_to_str(domain->id)); + err = -EINVAL; + goto out_rpm; + } + + intel_uncore_forcewake_get(uncore, fw_domains); + val = readl(reg); + intel_uncore_forcewake_put(uncore, fw_domains); + + /* Flush the forcewake release (delayed onto a timer) */ + for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) { + smp_store_mb(domain->active, false); + if (hrtimer_cancel(&domain->timer)) + intel_uncore_fw_release_timer(&domain->timer); + + preempt_disable(); + err = wait_ack_clear(domain, FORCEWAKE_KERNEL); + preempt_enable(); + if (err) { + pr_err("Failed to clear fw_domain %s\n", + intel_uncore_forcewake_domain_to_str(domain->id)); + goto out_rpm; + } + } + + if (!val) { + pr_err("%s:%s was zero while fw was held!\n", + engine->name, r->name); + err = -EINVAL; + goto out_rpm; + } + + /* We then expect the read to return 0 outside of the fw */ + if (wait_for(readl(reg) == 0, 100)) { + pr_err("%s:%s=%0x, fw_domains 0x%x still up after 100ms!\n", + engine->name, r->name, readl(reg), fw_domains); + err = -ETIMEDOUT; + goto out_rpm; + } + } + +out_rpm: + intel_runtime_pm_put(uncore->rpm, wakeref); + return err; +} + +static int live_forcewake_domains(void *arg) +{ +#define FW_RANGE 0x40000 + struct intel_gt *gt = arg; + struct intel_uncore *uncore = gt->uncore; + unsigned long *valid; + u32 offset; + int err; + + if (!HAS_FPGA_DBG_UNCLAIMED(gt->i915) && + !IS_VALLEYVIEW(gt->i915) && + !IS_CHERRYVIEW(gt->i915)) + return 0; + + /* + * This test may lockup the machine or cause GPU hangs afterwards. + */ + if (!IS_ENABLED(CONFIG_DRM_I915_SELFTEST_BROKEN)) + return 0; + + valid = bitmap_zalloc(FW_RANGE, GFP_KERNEL); + if (!valid) + return -ENOMEM; + + intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); + + check_for_unclaimed_mmio(uncore); + for (offset = 0; offset < FW_RANGE; offset += 4) { + i915_reg_t reg = { offset }; + + intel_uncore_posting_read_fw(uncore, reg); + if (!check_for_unclaimed_mmio(uncore)) + set_bit(offset, valid); + } + + intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL); + + err = 0; + for_each_set_bit(offset, valid, FW_RANGE) { + i915_reg_t reg = { offset }; + + iosf_mbi_punit_acquire(); + intel_uncore_forcewake_reset(uncore); + iosf_mbi_punit_release(); + + check_for_unclaimed_mmio(uncore); + + intel_uncore_posting_read_fw(uncore, reg); + if (check_for_unclaimed_mmio(uncore)) { + pr_err("Unclaimed mmio read to register 0x%04x\n", + offset); + err = -EINVAL; + } + } + + bitmap_free(valid); + return err; +} + +static int live_fw_table(void *arg) +{ + struct intel_gt *gt = arg; + + /* Confirm the table we load is still valid */ + return intel_fw_table_check(gt->uncore->fw_domains_table, + gt->uncore->fw_domains_table_entries, + GRAPHICS_VER(gt->i915) >= 9); +} + +int intel_uncore_live_selftests(struct drm_i915_private *i915) +{ + static const struct i915_subtest tests[] = { + SUBTEST(live_fw_table), + SUBTEST(live_forcewake_ops), + SUBTEST(live_forcewake_domains), + }; + + return intel_gt_live_subtests(tests, to_gt(i915)); +} -- cgit v1.2.3