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/omapdrm/dss/base.c | 295 +++++++++++++++++++++++++++++++++++++ 1 file changed, 295 insertions(+) create mode 100644 drivers/gpu/drm/omapdrm/dss/base.c (limited to 'drivers/gpu/drm/omapdrm/dss/base.c') diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c new file mode 100644 index 000000000..050ca7eaf --- /dev/null +++ b/drivers/gpu/drm/omapdrm/dss/base.c @@ -0,0 +1,295 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * OMAP Display Subsystem Base + * + * Copyright (C) 2015-2017 Texas Instruments Incorporated - https://www.ti.com/ + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "dss.h" +#include "omapdss.h" + +struct dispc_device *dispc_get_dispc(struct dss_device *dss) +{ + return dss->dispc; +} + +/* ----------------------------------------------------------------------------- + * OMAP DSS Devices Handling + */ + +static LIST_HEAD(omapdss_devices_list); +static DEFINE_MUTEX(omapdss_devices_lock); + +void omapdss_device_register(struct omap_dss_device *dssdev) +{ + mutex_lock(&omapdss_devices_lock); + list_add_tail(&dssdev->list, &omapdss_devices_list); + mutex_unlock(&omapdss_devices_lock); +} + +void omapdss_device_unregister(struct omap_dss_device *dssdev) +{ + mutex_lock(&omapdss_devices_lock); + list_del(&dssdev->list); + mutex_unlock(&omapdss_devices_lock); +} + +static bool omapdss_device_is_registered(struct device_node *node) +{ + struct omap_dss_device *dssdev; + bool found = false; + + mutex_lock(&omapdss_devices_lock); + + list_for_each_entry(dssdev, &omapdss_devices_list, list) { + if (dssdev->dev->of_node == node) { + found = true; + break; + } + } + + mutex_unlock(&omapdss_devices_lock); + return found; +} + +struct omap_dss_device *omapdss_device_get(struct omap_dss_device *dssdev) +{ + if (get_device(dssdev->dev) == NULL) + return NULL; + + return dssdev; +} + +void omapdss_device_put(struct omap_dss_device *dssdev) +{ + put_device(dssdev->dev); +} + +struct omap_dss_device *omapdss_find_device_by_node(struct device_node *node) +{ + struct omap_dss_device *dssdev; + + list_for_each_entry(dssdev, &omapdss_devices_list, list) { + if (dssdev->dev->of_node == node) + return omapdss_device_get(dssdev); + } + + return NULL; +} + +/* + * Search for the next output device starting at @from. Release the reference to + * the @from device, and acquire a reference to the returned device if found. + */ +struct omap_dss_device *omapdss_device_next_output(struct omap_dss_device *from) +{ + struct omap_dss_device *dssdev; + struct list_head *list; + + mutex_lock(&omapdss_devices_lock); + + if (list_empty(&omapdss_devices_list)) { + dssdev = NULL; + goto done; + } + + /* + * Start from the from entry if given or from omapdss_devices_list + * otherwise. + */ + list = from ? &from->list : &omapdss_devices_list; + + list_for_each_entry(dssdev, list, list) { + /* + * Stop if we reach the omapdss_devices_list, that's the end of + * the list. + */ + if (&dssdev->list == &omapdss_devices_list) { + dssdev = NULL; + goto done; + } + + if (dssdev->id && dssdev->bridge) + goto done; + } + + dssdev = NULL; + +done: + if (from) + omapdss_device_put(from); + if (dssdev) + omapdss_device_get(dssdev); + + mutex_unlock(&omapdss_devices_lock); + return dssdev; +} + +static bool omapdss_device_is_connected(struct omap_dss_device *dssdev) +{ + return dssdev->dss; +} + +int omapdss_device_connect(struct dss_device *dss, + struct omap_dss_device *src, + struct omap_dss_device *dst) +{ + dev_dbg(&dss->pdev->dev, "connect(%s, %s)\n", + src ? dev_name(src->dev) : "NULL", + dst ? dev_name(dst->dev) : "NULL"); + + if (!dst) { + /* + * The destination is NULL when the source is connected to a + * bridge instead of a DSS device. Stop here, we will attach + * the bridge later when we will have a DRM encoder. + */ + return src && src->bridge ? 0 : -EINVAL; + } + + if (omapdss_device_is_connected(dst)) + return -EBUSY; + + dst->dss = dss; + + return 0; +} + +void omapdss_device_disconnect(struct omap_dss_device *src, + struct omap_dss_device *dst) +{ + struct dss_device *dss = src ? src->dss : dst->dss; + + dev_dbg(&dss->pdev->dev, "disconnect(%s, %s)\n", + src ? dev_name(src->dev) : "NULL", + dst ? dev_name(dst->dev) : "NULL"); + + if (!dst) { + WARN_ON(!src->bridge); + return; + } + + if (!dst->id && !omapdss_device_is_connected(dst)) { + WARN_ON(1); + return; + } + + dst->dss = NULL; +} + +/* ----------------------------------------------------------------------------- + * Components Handling + */ + +static struct list_head omapdss_comp_list; + +struct omapdss_comp_node { + struct list_head list; + struct device_node *node; + bool dss_core_component; + const char *compat; +}; + +static bool omapdss_list_contains(const struct device_node *node) +{ + struct omapdss_comp_node *comp; + + list_for_each_entry(comp, &omapdss_comp_list, list) { + if (comp->node == node) + return true; + } + + return false; +} + +static void omapdss_walk_device(struct device *dev, struct device_node *node, + bool dss_core) +{ + struct omapdss_comp_node *comp; + struct device_node *n; + const char *compat; + int ret; + + ret = of_property_read_string(node, "compatible", &compat); + if (ret < 0) + return; + + comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL); + if (comp) { + comp->node = node; + comp->dss_core_component = dss_core; + comp->compat = compat; + list_add(&comp->list, &omapdss_comp_list); + } + + /* + * of_graph_get_remote_port_parent() prints an error if there is no + * port/ports node. To avoid that, check first that there's the node. + */ + n = of_get_child_by_name(node, "ports"); + if (!n) + n = of_get_child_by_name(node, "port"); + if (!n) + return; + + of_node_put(n); + + n = NULL; + while ((n = of_graph_get_next_endpoint(node, n)) != NULL) { + struct device_node *pn = of_graph_get_remote_port_parent(n); + + if (!pn) + continue; + + if (!of_device_is_available(pn) || omapdss_list_contains(pn)) { + of_node_put(pn); + continue; + } + + omapdss_walk_device(dev, pn, false); + } +} + +void omapdss_gather_components(struct device *dev) +{ + struct device_node *child; + + INIT_LIST_HEAD(&omapdss_comp_list); + + omapdss_walk_device(dev, dev->of_node, true); + + for_each_available_child_of_node(dev->of_node, child) + omapdss_walk_device(dev, child, true); +} + +static bool omapdss_component_is_loaded(struct omapdss_comp_node *comp) +{ + if (comp->dss_core_component) + return true; + if (!strstarts(comp->compat, "omapdss,")) + return true; + if (omapdss_device_is_registered(comp->node)) + return true; + + return false; +} + +bool omapdss_stack_is_ready(void) +{ + struct omapdss_comp_node *comp; + + list_for_each_entry(comp, &omapdss_comp_list, list) { + if (!omapdss_component_is_loaded(comp)) + return false; + } + + return true; +} -- cgit v1.2.3