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_gtt_mgr.c | 324 ++++++++++++++++++++++++++++ 1 file changed, 324 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c new file mode 100644 index 000000000..44367f033 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c @@ -0,0 +1,324 @@ +/* + * Copyright 2016 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. + * + * Authors: Christian König + */ + +#include + +#include "amdgpu.h" + +static inline struct amdgpu_gtt_mgr * +to_gtt_mgr(struct ttm_resource_manager *man) +{ + return container_of(man, struct amdgpu_gtt_mgr, manager); +} + +/** + * DOC: mem_info_gtt_total + * + * The amdgpu driver provides a sysfs API for reporting current total size of + * the GTT. + * The file mem_info_gtt_total is used for this, and returns the total size of + * the GTT block, in bytes + */ +static ssize_t amdgpu_mem_info_gtt_total_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + struct ttm_resource_manager *man; + + man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT); + return sysfs_emit(buf, "%llu\n", man->size); +} + +/** + * DOC: mem_info_gtt_used + * + * The amdgpu driver provides a sysfs API for reporting current total amount of + * used GTT. + * The file mem_info_gtt_used is used for this, and returns the current used + * size of the GTT block, in bytes + */ +static ssize_t amdgpu_mem_info_gtt_used_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + struct ttm_resource_manager *man = &adev->mman.gtt_mgr.manager; + + return sysfs_emit(buf, "%llu\n", ttm_resource_manager_usage(man)); +} + +static DEVICE_ATTR(mem_info_gtt_total, S_IRUGO, + amdgpu_mem_info_gtt_total_show, NULL); +static DEVICE_ATTR(mem_info_gtt_used, S_IRUGO, + amdgpu_mem_info_gtt_used_show, NULL); + +static struct attribute *amdgpu_gtt_mgr_attributes[] = { + &dev_attr_mem_info_gtt_total.attr, + &dev_attr_mem_info_gtt_used.attr, + NULL +}; + +const struct attribute_group amdgpu_gtt_mgr_attr_group = { + .attrs = amdgpu_gtt_mgr_attributes +}; + +/** + * amdgpu_gtt_mgr_has_gart_addr - Check if mem has address space + * + * @res: the mem object to check + * + * Check if a mem object has already address space allocated. + */ +bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *res) +{ + struct ttm_range_mgr_node *node = to_ttm_range_mgr_node(res); + + return drm_mm_node_allocated(&node->mm_nodes[0]); +} + +/** + * amdgpu_gtt_mgr_new - allocate a new node + * + * @man: TTM memory type manager + * @tbo: TTM BO we need this range for + * @place: placement flags and restrictions + * @res: the resulting mem object + * + * Dummy, allocate the node but no space for it yet. + */ +static int amdgpu_gtt_mgr_new(struct ttm_resource_manager *man, + struct ttm_buffer_object *tbo, + const struct ttm_place *place, + struct ttm_resource **res) +{ + struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man); + uint32_t num_pages = PFN_UP(tbo->base.size); + struct ttm_range_mgr_node *node; + int r; + + node = kzalloc(struct_size(node, mm_nodes, 1), GFP_KERNEL); + if (!node) + return -ENOMEM; + + ttm_resource_init(tbo, place, &node->base); + if (!(place->flags & TTM_PL_FLAG_TEMPORARY) && + ttm_resource_manager_usage(man) > man->size) { + r = -ENOSPC; + goto err_free; + } + + if (place->lpfn) { + spin_lock(&mgr->lock); + r = drm_mm_insert_node_in_range(&mgr->mm, &node->mm_nodes[0], + num_pages, tbo->page_alignment, + 0, place->fpfn, place->lpfn, + DRM_MM_INSERT_BEST); + spin_unlock(&mgr->lock); + if (unlikely(r)) + goto err_free; + + node->base.start = node->mm_nodes[0].start; + } else { + node->mm_nodes[0].start = 0; + node->mm_nodes[0].size = PFN_UP(node->base.size); + node->base.start = AMDGPU_BO_INVALID_OFFSET; + } + + *res = &node->base; + return 0; + +err_free: + ttm_resource_fini(man, &node->base); + kfree(node); + return r; +} + +/** + * amdgpu_gtt_mgr_del - free ranges + * + * @man: TTM memory type manager + * @res: TTM memory object + * + * Free the allocated GTT again. + */ +static void amdgpu_gtt_mgr_del(struct ttm_resource_manager *man, + struct ttm_resource *res) +{ + struct ttm_range_mgr_node *node = to_ttm_range_mgr_node(res); + struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man); + + spin_lock(&mgr->lock); + if (drm_mm_node_allocated(&node->mm_nodes[0])) + drm_mm_remove_node(&node->mm_nodes[0]); + spin_unlock(&mgr->lock); + + ttm_resource_fini(man, res); + kfree(node); +} + +/** + * amdgpu_gtt_mgr_recover - re-init gart + * + * @mgr: amdgpu_gtt_mgr pointer + * + * Re-init the gart for each known BO in the GTT. + */ +void amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr) +{ + struct ttm_range_mgr_node *node; + struct drm_mm_node *mm_node; + struct amdgpu_device *adev; + + adev = container_of(mgr, typeof(*adev), mman.gtt_mgr); + spin_lock(&mgr->lock); + drm_mm_for_each_node(mm_node, &mgr->mm) { + node = container_of(mm_node, typeof(*node), mm_nodes[0]); + amdgpu_ttm_recover_gart(node->base.bo); + } + spin_unlock(&mgr->lock); + + amdgpu_gart_invalidate_tlb(adev); +} + +/** + * amdgpu_gtt_mgr_intersects - test for intersection + * + * @man: Our manager object + * @res: The resource to test + * @place: The place for the new allocation + * @size: The size of the new allocation + * + * Simplified intersection test, only interesting if we need GART or not. + */ +static bool amdgpu_gtt_mgr_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res); +} + +/** + * amdgpu_gtt_mgr_compatible - test for compatibility + * + * @man: Our manager object + * @res: The resource to test + * @place: The place for the new allocation + * @size: The size of the new allocation + * + * Simplified compatibility test. + */ +static bool amdgpu_gtt_mgr_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res); +} + +/** + * amdgpu_gtt_mgr_debug - dump VRAM table + * + * @man: TTM memory type manager + * @printer: DRM printer to use + * + * Dump the table content using printk. + */ +static void amdgpu_gtt_mgr_debug(struct ttm_resource_manager *man, + struct drm_printer *printer) +{ + struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man); + + spin_lock(&mgr->lock); + drm_mm_print(&mgr->mm, printer); + spin_unlock(&mgr->lock); +} + +static const struct ttm_resource_manager_func amdgpu_gtt_mgr_func = { + .alloc = amdgpu_gtt_mgr_new, + .free = amdgpu_gtt_mgr_del, + .intersects = amdgpu_gtt_mgr_intersects, + .compatible = amdgpu_gtt_mgr_compatible, + .debug = amdgpu_gtt_mgr_debug +}; + +/** + * amdgpu_gtt_mgr_init - init GTT manager and DRM MM + * + * @adev: amdgpu_device pointer + * @gtt_size: maximum size of GTT + * + * Allocate and initialize the GTT manager. + */ +int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size) +{ + struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr; + struct ttm_resource_manager *man = &mgr->manager; + uint64_t start, size; + + man->use_tt = true; + man->func = &amdgpu_gtt_mgr_func; + + ttm_resource_manager_init(man, &adev->mman.bdev, gtt_size); + + start = AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS; + size = (adev->gmc.gart_size >> PAGE_SHIFT) - start; + drm_mm_init(&mgr->mm, start, size); + spin_lock_init(&mgr->lock); + + ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, &mgr->manager); + ttm_resource_manager_set_used(man, true); + return 0; +} + +/** + * amdgpu_gtt_mgr_fini - free and destroy GTT manager + * + * @adev: amdgpu_device pointer + * + * Destroy and free the GTT manager, returns -EBUSY if ranges are still + * allocated inside it. + */ +void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev) +{ + struct amdgpu_gtt_mgr *mgr = &adev->mman.gtt_mgr; + struct ttm_resource_manager *man = &mgr->manager; + int ret; + + ttm_resource_manager_set_used(man, false); + + ret = ttm_resource_manager_evict_all(&adev->mman.bdev, man); + if (ret) + return; + + spin_lock(&mgr->lock); + drm_mm_takedown(&mgr->mm); + spin_unlock(&mgr->lock); + + ttm_resource_manager_cleanup(man); + ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_TT, NULL); +} -- cgit v1.2.3