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/radeon/radeon_sa.c | 424 +++++++++++++++++++++++++++++++++++++ 1 file changed, 424 insertions(+) create mode 100644 drivers/gpu/drm/radeon/radeon_sa.c (limited to 'drivers/gpu/drm/radeon/radeon_sa.c') diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c new file mode 100644 index 000000000..0981948bd --- /dev/null +++ b/drivers/gpu/drm/radeon/radeon_sa.c @@ -0,0 +1,424 @@ +/* + * Copyright 2011 Red Hat Inc. + * All Rights Reserved. + * + * 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + */ +/* + * Authors: + * Jerome Glisse + */ +/* Algorithm: + * + * We store the last allocated bo in "hole", we always try to allocate + * after the last allocated bo. Principle is that in a linear GPU ring + * progression was is after last is the oldest bo we allocated and thus + * the first one that should no longer be in use by the GPU. + * + * If it's not the case we skip over the bo after last to the closest + * done bo if such one exist. If none exist and we are not asked to + * block we report failure to allocate. + * + * If we are asked to block we wait on all the oldest fence of all + * rings. We just wait for any of those fence to complete. + */ + +#include "radeon.h" + +static void radeon_sa_bo_remove_locked(struct radeon_sa_bo *sa_bo); +static void radeon_sa_bo_try_free(struct radeon_sa_manager *sa_manager); + +int radeon_sa_bo_manager_init(struct radeon_device *rdev, + struct radeon_sa_manager *sa_manager, + unsigned size, u32 align, u32 domain, u32 flags) +{ + int i, r; + + init_waitqueue_head(&sa_manager->wq); + sa_manager->bo = NULL; + sa_manager->size = size; + sa_manager->domain = domain; + sa_manager->align = align; + sa_manager->hole = &sa_manager->olist; + INIT_LIST_HEAD(&sa_manager->olist); + for (i = 0; i < RADEON_NUM_RINGS; ++i) { + INIT_LIST_HEAD(&sa_manager->flist[i]); + } + + r = radeon_bo_create(rdev, size, align, true, + domain, flags, NULL, NULL, &sa_manager->bo); + if (r) { + dev_err(rdev->dev, "(%d) failed to allocate bo for manager\n", r); + return r; + } + + return r; +} + +void radeon_sa_bo_manager_fini(struct radeon_device *rdev, + struct radeon_sa_manager *sa_manager) +{ + struct radeon_sa_bo *sa_bo, *tmp; + + if (!list_empty(&sa_manager->olist)) { + sa_manager->hole = &sa_manager->olist, + radeon_sa_bo_try_free(sa_manager); + if (!list_empty(&sa_manager->olist)) { + dev_err(rdev->dev, "sa_manager is not empty, clearing anyway\n"); + } + } + list_for_each_entry_safe(sa_bo, tmp, &sa_manager->olist, olist) { + radeon_sa_bo_remove_locked(sa_bo); + } + radeon_bo_unref(&sa_manager->bo); + sa_manager->size = 0; +} + +int radeon_sa_bo_manager_start(struct radeon_device *rdev, + struct radeon_sa_manager *sa_manager) +{ + int r; + + if (sa_manager->bo == NULL) { + dev_err(rdev->dev, "no bo for sa manager\n"); + return -EINVAL; + } + + /* map the buffer */ + r = radeon_bo_reserve(sa_manager->bo, false); + if (r) { + dev_err(rdev->dev, "(%d) failed to reserve manager bo\n", r); + return r; + } + r = radeon_bo_pin(sa_manager->bo, sa_manager->domain, &sa_manager->gpu_addr); + if (r) { + radeon_bo_unreserve(sa_manager->bo); + dev_err(rdev->dev, "(%d) failed to pin manager bo\n", r); + return r; + } + r = radeon_bo_kmap(sa_manager->bo, &sa_manager->cpu_ptr); + radeon_bo_unreserve(sa_manager->bo); + return r; +} + +int radeon_sa_bo_manager_suspend(struct radeon_device *rdev, + struct radeon_sa_manager *sa_manager) +{ + int r; + + if (sa_manager->bo == NULL) { + dev_err(rdev->dev, "no bo for sa manager\n"); + return -EINVAL; + } + + r = radeon_bo_reserve(sa_manager->bo, false); + if (!r) { + radeon_bo_kunmap(sa_manager->bo); + radeon_bo_unpin(sa_manager->bo); + radeon_bo_unreserve(sa_manager->bo); + } + return r; +} + +static void radeon_sa_bo_remove_locked(struct radeon_sa_bo *sa_bo) +{ + struct radeon_sa_manager *sa_manager = sa_bo->manager; + if (sa_manager->hole == &sa_bo->olist) { + sa_manager->hole = sa_bo->olist.prev; + } + list_del_init(&sa_bo->olist); + list_del_init(&sa_bo->flist); + radeon_fence_unref(&sa_bo->fence); + kfree(sa_bo); +} + +static void radeon_sa_bo_try_free(struct radeon_sa_manager *sa_manager) +{ + struct radeon_sa_bo *sa_bo, *tmp; + + if (sa_manager->hole->next == &sa_manager->olist) + return; + + sa_bo = list_entry(sa_manager->hole->next, struct radeon_sa_bo, olist); + list_for_each_entry_safe_from(sa_bo, tmp, &sa_manager->olist, olist) { + if (sa_bo->fence == NULL || !radeon_fence_signaled(sa_bo->fence)) { + return; + } + radeon_sa_bo_remove_locked(sa_bo); + } +} + +static inline unsigned radeon_sa_bo_hole_soffset(struct radeon_sa_manager *sa_manager) +{ + struct list_head *hole = sa_manager->hole; + + if (hole != &sa_manager->olist) { + return list_entry(hole, struct radeon_sa_bo, olist)->eoffset; + } + return 0; +} + +static inline unsigned radeon_sa_bo_hole_eoffset(struct radeon_sa_manager *sa_manager) +{ + struct list_head *hole = sa_manager->hole; + + if (hole->next != &sa_manager->olist) { + return list_entry(hole->next, struct radeon_sa_bo, olist)->soffset; + } + return sa_manager->size; +} + +static bool radeon_sa_bo_try_alloc(struct radeon_sa_manager *sa_manager, + struct radeon_sa_bo *sa_bo, + unsigned size, unsigned align) +{ + unsigned soffset, eoffset, wasted; + + soffset = radeon_sa_bo_hole_soffset(sa_manager); + eoffset = radeon_sa_bo_hole_eoffset(sa_manager); + wasted = (align - (soffset % align)) % align; + + if ((eoffset - soffset) >= (size + wasted)) { + soffset += wasted; + + sa_bo->manager = sa_manager; + sa_bo->soffset = soffset; + sa_bo->eoffset = soffset + size; + list_add(&sa_bo->olist, sa_manager->hole); + INIT_LIST_HEAD(&sa_bo->flist); + sa_manager->hole = &sa_bo->olist; + return true; + } + return false; +} + +/** + * radeon_sa_event - Check if we can stop waiting + * + * @sa_manager: pointer to the sa_manager + * @size: number of bytes we want to allocate + * @align: alignment we need to match + * + * Check if either there is a fence we can wait for or + * enough free memory to satisfy the allocation directly + */ +static bool radeon_sa_event(struct radeon_sa_manager *sa_manager, + unsigned size, unsigned align) +{ + unsigned soffset, eoffset, wasted; + int i; + + for (i = 0; i < RADEON_NUM_RINGS; ++i) { + if (!list_empty(&sa_manager->flist[i])) { + return true; + } + } + + soffset = radeon_sa_bo_hole_soffset(sa_manager); + eoffset = radeon_sa_bo_hole_eoffset(sa_manager); + wasted = (align - (soffset % align)) % align; + + if ((eoffset - soffset) >= (size + wasted)) { + return true; + } + + return false; +} + +static bool radeon_sa_bo_next_hole(struct radeon_sa_manager *sa_manager, + struct radeon_fence **fences, + unsigned *tries) +{ + struct radeon_sa_bo *best_bo = NULL; + unsigned i, soffset, best, tmp; + + /* if hole points to the end of the buffer */ + if (sa_manager->hole->next == &sa_manager->olist) { + /* try again with its beginning */ + sa_manager->hole = &sa_manager->olist; + return true; + } + + soffset = radeon_sa_bo_hole_soffset(sa_manager); + /* to handle wrap around we add sa_manager->size */ + best = sa_manager->size * 2; + /* go over all fence list and try to find the closest sa_bo + * of the current last + */ + for (i = 0; i < RADEON_NUM_RINGS; ++i) { + struct radeon_sa_bo *sa_bo; + + fences[i] = NULL; + + if (list_empty(&sa_manager->flist[i])) { + continue; + } + + sa_bo = list_first_entry(&sa_manager->flist[i], + struct radeon_sa_bo, flist); + + if (!radeon_fence_signaled(sa_bo->fence)) { + fences[i] = sa_bo->fence; + continue; + } + + /* limit the number of tries each ring gets */ + if (tries[i] > 2) { + continue; + } + + tmp = sa_bo->soffset; + if (tmp < soffset) { + /* wrap around, pretend it's after */ + tmp += sa_manager->size; + } + tmp -= soffset; + if (tmp < best) { + /* this sa bo is the closest one */ + best = tmp; + best_bo = sa_bo; + } + } + + if (best_bo) { + ++tries[best_bo->fence->ring]; + sa_manager->hole = best_bo->olist.prev; + + /* we knew that this one is signaled, + so it's save to remote it */ + radeon_sa_bo_remove_locked(best_bo); + return true; + } + return false; +} + +int radeon_sa_bo_new(struct radeon_device *rdev, + struct radeon_sa_manager *sa_manager, + struct radeon_sa_bo **sa_bo, + unsigned size, unsigned align) +{ + struct radeon_fence *fences[RADEON_NUM_RINGS]; + unsigned tries[RADEON_NUM_RINGS]; + int i, r; + + BUG_ON(align > sa_manager->align); + BUG_ON(size > sa_manager->size); + + *sa_bo = kmalloc(sizeof(struct radeon_sa_bo), GFP_KERNEL); + if ((*sa_bo) == NULL) { + return -ENOMEM; + } + (*sa_bo)->manager = sa_manager; + (*sa_bo)->fence = NULL; + INIT_LIST_HEAD(&(*sa_bo)->olist); + INIT_LIST_HEAD(&(*sa_bo)->flist); + + spin_lock(&sa_manager->wq.lock); + do { + for (i = 0; i < RADEON_NUM_RINGS; ++i) + tries[i] = 0; + + do { + radeon_sa_bo_try_free(sa_manager); + + if (radeon_sa_bo_try_alloc(sa_manager, *sa_bo, + size, align)) { + spin_unlock(&sa_manager->wq.lock); + return 0; + } + + /* see if we can skip over some allocations */ + } while (radeon_sa_bo_next_hole(sa_manager, fences, tries)); + + for (i = 0; i < RADEON_NUM_RINGS; ++i) + radeon_fence_ref(fences[i]); + + spin_unlock(&sa_manager->wq.lock); + r = radeon_fence_wait_any(rdev, fences, false); + for (i = 0; i < RADEON_NUM_RINGS; ++i) + radeon_fence_unref(&fences[i]); + spin_lock(&sa_manager->wq.lock); + /* if we have nothing to wait for block */ + if (r == -ENOENT) { + r = wait_event_interruptible_locked( + sa_manager->wq, + radeon_sa_event(sa_manager, size, align) + ); + } + + } while (!r); + + spin_unlock(&sa_manager->wq.lock); + kfree(*sa_bo); + *sa_bo = NULL; + return r; +} + +void radeon_sa_bo_free(struct radeon_device *rdev, struct radeon_sa_bo **sa_bo, + struct radeon_fence *fence) +{ + struct radeon_sa_manager *sa_manager; + + if (sa_bo == NULL || *sa_bo == NULL) { + return; + } + + sa_manager = (*sa_bo)->manager; + spin_lock(&sa_manager->wq.lock); + if (fence && !radeon_fence_signaled(fence)) { + (*sa_bo)->fence = radeon_fence_ref(fence); + list_add_tail(&(*sa_bo)->flist, + &sa_manager->flist[fence->ring]); + } else { + radeon_sa_bo_remove_locked(*sa_bo); + } + wake_up_all_locked(&sa_manager->wq); + spin_unlock(&sa_manager->wq.lock); + *sa_bo = NULL; +} + +#if defined(CONFIG_DEBUG_FS) +void radeon_sa_bo_dump_debug_info(struct radeon_sa_manager *sa_manager, + struct seq_file *m) +{ + struct radeon_sa_bo *i; + + spin_lock(&sa_manager->wq.lock); + list_for_each_entry(i, &sa_manager->olist, olist) { + uint64_t soffset = i->soffset + sa_manager->gpu_addr; + uint64_t eoffset = i->eoffset + sa_manager->gpu_addr; + if (&i->olist == sa_manager->hole) { + seq_printf(m, ">"); + } else { + seq_printf(m, " "); + } + seq_printf(m, "[0x%010llx 0x%010llx] size %8lld", + soffset, eoffset, eoffset - soffset); + if (i->fence) { + seq_printf(m, " protected by 0x%016llx on ring %d", + i->fence->seq, i->fence->ring); + } + seq_printf(m, "\n"); + } + spin_unlock(&sa_manager->wq.lock); +} +#endif -- cgit v1.2.3