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/arm/display/komeda/komeda_kms.c | 351 ++++++++++++++++++++++++ 1 file changed, 351 insertions(+) create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_kms.c (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_kms.c') diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c new file mode 100644 index 000000000..62dc64550 --- /dev/null +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c @@ -0,0 +1,351 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) COPYRIGHT 2018 ARM Limited. All rights reserved. + * Author: James.Qian.Wang + * + */ +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "komeda_dev.h" +#include "komeda_framebuffer.h" +#include "komeda_kms.h" + +DEFINE_DRM_GEM_DMA_FOPS(komeda_cma_fops); + +static int komeda_gem_dma_dumb_create(struct drm_file *file, + struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + struct komeda_dev *mdev = dev->dev_private; + u32 pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + + args->pitch = ALIGN(pitch, mdev->chip.bus_width); + + return drm_gem_dma_dumb_create_internal(file, dev, args); +} + +static irqreturn_t komeda_kms_irq_handler(int irq, void *data) +{ + struct drm_device *drm = data; + struct komeda_dev *mdev = drm->dev_private; + struct komeda_kms_dev *kms = to_kdev(drm); + struct komeda_events evts; + irqreturn_t status; + u32 i; + + /* Call into the CHIP to recognize events */ + memset(&evts, 0, sizeof(evts)); + status = mdev->funcs->irq_handler(mdev, &evts); + + komeda_print_events(&evts, drm); + + /* Notify the crtc to handle the events */ + for (i = 0; i < kms->n_crtcs; i++) + komeda_crtc_handle_event(&kms->crtcs[i], &evts); + + return status; +} + +static const struct drm_driver komeda_kms_driver = { + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, + DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(komeda_gem_dma_dumb_create), + .fops = &komeda_cma_fops, + .name = "komeda", + .desc = "Arm Komeda Display Processor driver", + .date = "20181101", + .major = 0, + .minor = 1, +}; + +static void komeda_kms_atomic_commit_hw_done(struct drm_atomic_state *state) +{ + struct drm_device *dev = state->dev; + struct komeda_kms_dev *kms = to_kdev(dev); + int i; + + for (i = 0; i < kms->n_crtcs; i++) { + struct komeda_crtc *kcrtc = &kms->crtcs[i]; + + if (kcrtc->base.state->active) { + struct completion *flip_done = NULL; + if (kcrtc->base.state->event) + flip_done = kcrtc->base.state->event->base.completion; + komeda_crtc_flush_and_wait_for_flip_done(kcrtc, flip_done); + } + } + drm_atomic_helper_commit_hw_done(state); +} + +static void komeda_kms_commit_tail(struct drm_atomic_state *old_state) +{ + struct drm_device *dev = old_state->dev; + bool fence_cookie = dma_fence_begin_signalling(); + + drm_atomic_helper_commit_modeset_disables(dev, old_state); + + drm_atomic_helper_commit_planes(dev, old_state, + DRM_PLANE_COMMIT_ACTIVE_ONLY); + + drm_atomic_helper_commit_modeset_enables(dev, old_state); + + komeda_kms_atomic_commit_hw_done(old_state); + + drm_atomic_helper_wait_for_flip_done(dev, old_state); + + dma_fence_end_signalling(fence_cookie); + + drm_atomic_helper_cleanup_planes(dev, old_state); +} + +static const struct drm_mode_config_helper_funcs komeda_mode_config_helpers = { + .atomic_commit_tail = komeda_kms_commit_tail, +}; + +static int komeda_plane_state_list_add(struct drm_plane_state *plane_st, + struct list_head *zorder_list) +{ + struct komeda_plane_state *new = to_kplane_st(plane_st); + struct komeda_plane_state *node, *last; + + last = list_empty(zorder_list) ? + NULL : list_last_entry(zorder_list, typeof(*last), zlist_node); + + /* Considering the list sequence is zpos increasing, so if list is empty + * or the zpos of new node bigger than the last node in list, no need + * loop and just insert the new one to the tail of the list. + */ + if (!last || (new->base.zpos > last->base.zpos)) { + list_add_tail(&new->zlist_node, zorder_list); + return 0; + } + + /* Build the list by zpos increasing */ + list_for_each_entry(node, zorder_list, zlist_node) { + if (new->base.zpos < node->base.zpos) { + list_add_tail(&new->zlist_node, &node->zlist_node); + break; + } else if (node->base.zpos == new->base.zpos) { + struct drm_plane *a = node->base.plane; + struct drm_plane *b = new->base.plane; + + /* Komeda doesn't support setting a same zpos for + * different planes. + */ + DRM_DEBUG_ATOMIC("PLANE: %s and PLANE: %s are configured same zpos: %d.\n", + a->name, b->name, node->base.zpos); + return -EINVAL; + } + } + + return 0; +} + +static int komeda_crtc_normalize_zpos(struct drm_crtc *crtc, + struct drm_crtc_state *crtc_st) +{ + struct drm_atomic_state *state = crtc_st->state; + struct komeda_crtc *kcrtc = to_kcrtc(crtc); + struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(crtc_st); + struct komeda_plane_state *kplane_st; + struct drm_plane_state *plane_st; + struct drm_plane *plane; + struct list_head zorder_list; + int order = 0, err; + + DRM_DEBUG_ATOMIC("[CRTC:%d:%s] calculating normalized zpos values\n", + crtc->base.id, crtc->name); + + INIT_LIST_HEAD(&zorder_list); + + /* This loop also added all effected planes into the new state */ + drm_for_each_plane_mask(plane, crtc->dev, crtc_st->plane_mask) { + plane_st = drm_atomic_get_plane_state(state, plane); + if (IS_ERR(plane_st)) + return PTR_ERR(plane_st); + + /* Build a list by zpos increasing */ + err = komeda_plane_state_list_add(plane_st, &zorder_list); + if (err) + return err; + } + + kcrtc_st->max_slave_zorder = 0; + + list_for_each_entry(kplane_st, &zorder_list, zlist_node) { + plane_st = &kplane_st->base; + plane = plane_st->plane; + + plane_st->normalized_zpos = order++; + /* When layer_split has been enabled, one plane will be handled + * by two separated komeda layers (left/right), which may needs + * two zorders. + * - zorder: for left_layer for left display part. + * - zorder + 1: will be reserved for right layer. + */ + if (to_kplane_st(plane_st)->layer_split) + order++; + + DRM_DEBUG_ATOMIC("[PLANE:%d:%s] zpos:%d, normalized zpos: %d\n", + plane->base.id, plane->name, + plane_st->zpos, plane_st->normalized_zpos); + + /* calculate max slave zorder */ + if (has_bit(drm_plane_index(plane), kcrtc->slave_planes)) + kcrtc_st->max_slave_zorder = + max(plane_st->normalized_zpos, + kcrtc_st->max_slave_zorder); + } + + crtc_st->zpos_changed = true; + + return 0; +} + +static int komeda_kms_check(struct drm_device *dev, + struct drm_atomic_state *state) +{ + struct drm_crtc *crtc; + struct drm_crtc_state *new_crtc_st; + int i, err; + + err = drm_atomic_helper_check_modeset(dev, state); + if (err) + return err; + + /* Komeda need to re-calculate resource assumption in every commit + * so need to add all affected_planes (even unchanged) to + * drm_atomic_state. + */ + for_each_new_crtc_in_state(state, crtc, new_crtc_st, i) { + err = drm_atomic_add_affected_planes(state, crtc); + if (err) + return err; + + err = komeda_crtc_normalize_zpos(crtc, new_crtc_st); + if (err) + return err; + } + + err = drm_atomic_helper_check_planes(dev, state); + if (err) + return err; + + return 0; +} + +static const struct drm_mode_config_funcs komeda_mode_config_funcs = { + .fb_create = komeda_fb_create, + .atomic_check = komeda_kms_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static void komeda_kms_mode_config_init(struct komeda_kms_dev *kms, + struct komeda_dev *mdev) +{ + struct drm_mode_config *config = &kms->base.mode_config; + + drm_mode_config_init(&kms->base); + + komeda_kms_setup_crtcs(kms, mdev); + + /* Get value from dev */ + config->min_width = 0; + config->min_height = 0; + config->max_width = 4096; + config->max_height = 4096; + + config->funcs = &komeda_mode_config_funcs; + config->helper_private = &komeda_mode_config_helpers; +} + +struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev) +{ + struct komeda_kms_dev *kms; + struct drm_device *drm; + int err; + + kms = devm_drm_dev_alloc(mdev->dev, &komeda_kms_driver, + struct komeda_kms_dev, base); + if (IS_ERR(kms)) + return kms; + + drm = &kms->base; + + drm->dev_private = mdev; + + komeda_kms_mode_config_init(kms, mdev); + + err = komeda_kms_add_private_objs(kms, mdev); + if (err) + goto cleanup_mode_config; + + err = komeda_kms_add_planes(kms, mdev); + if (err) + goto cleanup_mode_config; + + err = drm_vblank_init(drm, kms->n_crtcs); + if (err) + goto cleanup_mode_config; + + err = komeda_kms_add_crtcs(kms, mdev); + if (err) + goto cleanup_mode_config; + + err = komeda_kms_add_wb_connectors(kms, mdev); + if (err) + goto cleanup_mode_config; + + err = component_bind_all(mdev->dev, kms); + if (err) + goto cleanup_mode_config; + + drm_mode_config_reset(drm); + + err = devm_request_irq(drm->dev, mdev->irq, + komeda_kms_irq_handler, IRQF_SHARED, + drm->driver->name, drm); + if (err) + goto free_component_binding; + + drm_kms_helper_poll_init(drm); + + err = drm_dev_register(drm, 0); + if (err) + goto free_interrupts; + + return kms; + +free_interrupts: + drm_kms_helper_poll_fini(drm); +free_component_binding: + component_unbind_all(mdev->dev, drm); +cleanup_mode_config: + drm_mode_config_cleanup(drm); + komeda_kms_cleanup_private_objs(kms); + drm->dev_private = NULL; + return ERR_PTR(err); +} + +void komeda_kms_detach(struct komeda_kms_dev *kms) +{ + struct drm_device *drm = &kms->base; + struct komeda_dev *mdev = drm->dev_private; + + drm_dev_unregister(drm); + drm_kms_helper_poll_fini(drm); + drm_atomic_helper_shutdown(drm); + component_unbind_all(mdev->dev, drm); + drm_mode_config_cleanup(drm); + komeda_kms_cleanup_private_objs(kms); + drm->dev_private = NULL; +} -- cgit v1.2.3