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/msm/msm_fbdev.c | 202 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 202 insertions(+) create mode 100644 drivers/gpu/drm/msm/msm_fbdev.c (limited to 'drivers/gpu/drm/msm/msm_fbdev.c') diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c new file mode 100644 index 000000000..31e1e30cb --- /dev/null +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -0,0 +1,202 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark + */ + +#include +#include +#include +#include +#include +#include + +#include "msm_drv.h" +#include "msm_gem.h" +#include "msm_kms.h" + +static int msm_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma); + +/* + * fbdev funcs, to implement legacy fbdev interface on top of drm driver + */ + +#define to_msm_fbdev(x) container_of(x, struct msm_fbdev, base) + +struct msm_fbdev { + struct drm_fb_helper base; + struct drm_framebuffer *fb; +}; + +static const struct fb_ops msm_fb_ops = { + .owner = THIS_MODULE, + DRM_FB_HELPER_DEFAULT_OPS, + + /* Note: to properly handle manual update displays, we wrap the + * basic fbdev ops which write to the framebuffer + */ + .fb_read = drm_fb_helper_sys_read, + .fb_write = drm_fb_helper_sys_write, + .fb_fillrect = drm_fb_helper_sys_fillrect, + .fb_copyarea = drm_fb_helper_sys_copyarea, + .fb_imageblit = drm_fb_helper_sys_imageblit, + .fb_mmap = msm_fbdev_mmap, +}; + +static int msm_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma) +{ + struct drm_fb_helper *helper = (struct drm_fb_helper *)info->par; + struct msm_fbdev *fbdev = to_msm_fbdev(helper); + struct drm_gem_object *bo = msm_framebuffer_bo(fbdev->fb, 0); + + return drm_gem_prime_mmap(bo, vma); +} + +static int msm_fbdev_create(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct msm_fbdev *fbdev = to_msm_fbdev(helper); + struct drm_device *dev = helper->dev; + struct msm_drm_private *priv = dev->dev_private; + struct drm_framebuffer *fb = NULL; + struct drm_gem_object *bo; + struct fb_info *fbi = NULL; + uint64_t paddr; + uint32_t format; + int ret, pitch; + + format = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth); + + DBG("create fbdev: %dx%d@%d (%dx%d)", sizes->surface_width, + sizes->surface_height, sizes->surface_bpp, + sizes->fb_width, sizes->fb_height); + + pitch = align_pitch(sizes->surface_width, sizes->surface_bpp); + fb = msm_alloc_stolen_fb(dev, sizes->surface_width, + sizes->surface_height, pitch, format); + + if (IS_ERR(fb)) { + DRM_DEV_ERROR(dev->dev, "failed to allocate fb\n"); + return PTR_ERR(fb); + } + + bo = msm_framebuffer_bo(fb, 0); + + /* + * NOTE: if we can be guaranteed to be able to map buffer + * in panic (ie. lock-safe, etc) we could avoid pinning the + * buffer now: + */ + ret = msm_gem_get_and_pin_iova(bo, priv->kms->aspace, &paddr); + if (ret) { + DRM_DEV_ERROR(dev->dev, "failed to get buffer obj iova: %d\n", ret); + goto fail; + } + + fbi = drm_fb_helper_alloc_info(helper); + if (IS_ERR(fbi)) { + DRM_DEV_ERROR(dev->dev, "failed to allocate fb info\n"); + ret = PTR_ERR(fbi); + goto fail; + } + + DBG("fbi=%p, dev=%p", fbi, dev); + + fbdev->fb = fb; + helper->fb = fb; + + fbi->fbops = &msm_fb_ops; + + drm_fb_helper_fill_info(fbi, helper, sizes); + + fbi->screen_base = msm_gem_get_vaddr(bo); + if (IS_ERR(fbi->screen_base)) { + ret = PTR_ERR(fbi->screen_base); + goto fail; + } + fbi->screen_size = bo->size; + fbi->fix.smem_start = paddr; + fbi->fix.smem_len = bo->size; + + DBG("par=%p, %dx%d", fbi->par, fbi->var.xres, fbi->var.yres); + DBG("allocated %dx%d fb", fbdev->fb->width, fbdev->fb->height); + + return 0; + +fail: + drm_framebuffer_remove(fb); + return ret; +} + +static const struct drm_fb_helper_funcs msm_fb_helper_funcs = { + .fb_probe = msm_fbdev_create, +}; + +/* initialize fbdev helper */ +struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + struct msm_fbdev *fbdev = NULL; + struct drm_fb_helper *helper; + int ret; + + fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL); + if (!fbdev) + goto fail; + + helper = &fbdev->base; + + drm_fb_helper_prepare(dev, helper, &msm_fb_helper_funcs); + + ret = drm_fb_helper_init(dev, helper); + if (ret) { + DRM_DEV_ERROR(dev->dev, "could not init fbdev: ret=%d\n", ret); + goto fail; + } + + /* the fw fb could be anywhere in memory */ + ret = drm_aperture_remove_framebuffers(false, dev->driver); + if (ret) + goto fini; + + ret = drm_fb_helper_initial_config(helper, 32); + if (ret) + goto fini; + + priv->fbdev = helper; + + return helper; + +fini: + drm_fb_helper_fini(helper); +fail: + kfree(fbdev); + return NULL; +} + +void msm_fbdev_free(struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + struct drm_fb_helper *helper = priv->fbdev; + struct msm_fbdev *fbdev; + + DBG(); + + drm_fb_helper_unregister_info(helper); + + drm_fb_helper_fini(helper); + + fbdev = to_msm_fbdev(priv->fbdev); + + /* this will free the backing object */ + if (fbdev->fb) { + struct drm_gem_object *bo = + msm_framebuffer_bo(fbdev->fb, 0); + msm_gem_put_vaddr(bo); + drm_framebuffer_remove(fbdev->fb); + } + + kfree(fbdev); + + priv->fbdev = NULL; +} -- cgit v1.2.3