Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 215 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
new file mode 100644
index 000000000..26291db0a
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
@@ -0,0 +1,215 @@
+/*
+ * Copyright 2021 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: AMD
+ *
+ */
+
+#include "amdgpu_dm_psr.h"
+#include "dc.h"
+#include "dm_helpers.h"
+#include "amdgpu_dm.h"
+#include "modules/power/power_helpers.h"
+
+static bool link_supports_psrsu(struct dc_link *link)
+{
+	struct dc *dc = link->ctx->dc;
+
+	if (!dc->caps.dmcub_support)
+		return false;
+
+	if (dc->ctx->dce_version < DCN_VERSION_3_1)
+		return false;
+
+	if (!is_psr_su_specific_panel(link))
+		return false;
+
+	if (!link->dpcd_caps.alpm_caps.bits.AUX_WAKE_ALPM_CAP ||
+	    !link->dpcd_caps.psr_info.psr_dpcd_caps.bits.Y_COORDINATE_REQUIRED)
+		return false;
+
+	if (link->dpcd_caps.psr_info.psr_dpcd_caps.bits.SU_GRANULARITY_REQUIRED &&
+	    !link->dpcd_caps.psr_info.psr2_su_y_granularity_cap)
+		return false;
+
+	return true;
+}
+
+/*
+ * amdgpu_dm_set_psr_caps() - set link psr capabilities
+ * @link: link
+ *
+ */
+void amdgpu_dm_set_psr_caps(struct dc_link *link)
+{
+	if (!(link->connector_signal & SIGNAL_TYPE_EDP)) {
+		link->psr_settings.psr_feature_enabled = false;
+		return;
+	}
+
+	if (link->type == dc_connection_none) {
+		link->psr_settings.psr_feature_enabled = false;
+		return;
+	}
+
+	if (link->dpcd_caps.psr_info.psr_version == 0) {
+		link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
+		link->psr_settings.psr_feature_enabled = false;
+
+	} else {
+		if (link_supports_psrsu(link))
+			link->psr_settings.psr_version = DC_PSR_VERSION_SU_1;
+		else
+			link->psr_settings.psr_version = DC_PSR_VERSION_1;
+
+		link->psr_settings.psr_feature_enabled = true;
+	}
+
+	DRM_INFO("PSR support %d, DC PSR ver %d, sink PSR ver %d DPCD caps 0x%x su_y_granularity %d\n",
+		link->psr_settings.psr_feature_enabled,
+		link->psr_settings.psr_version,
+		link->dpcd_caps.psr_info.psr_version,
+		link->dpcd_caps.psr_info.psr_dpcd_caps.raw,
+		link->dpcd_caps.psr_info.psr2_su_y_granularity_cap);
+
+}
+
+/*
+ * amdgpu_dm_link_setup_psr() - configure psr link
+ * @stream: stream state
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream)
+{
+	struct dc_link *link = NULL;
+	struct psr_config psr_config = {0};
+	struct psr_context psr_context = {0};
+	struct dc *dc = NULL;
+	bool ret = false;
+
+	if (stream == NULL)
+		return false;
+
+	link = stream->link;
+	dc = link->ctx->dc;
+
+	if (link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED) {
+		mod_power_calc_psr_configs(&psr_config, link, stream);
+
+		/* linux DM specific updating for psr config fields */
+		psr_config.allow_smu_optimizations =
+			(amdgpu_dc_feature_mask & DC_PSR_ALLOW_SMU_OPT) &&
+			mod_power_only_edp(dc->current_state, stream);
+		psr_config.allow_multi_disp_optimizations =
+			(amdgpu_dc_feature_mask & DC_PSR_ALLOW_MULTI_DISP_OPT);
+
+		ret = dc_link_setup_psr(link, stream, &psr_config, &psr_context);
+
+	}
+	DRM_DEBUG_DRIVER("PSR link: %d\n",	link->psr_settings.psr_feature_enabled);
+
+	return ret;
+}
+
+/*
+ * amdgpu_dm_psr_enable() - enable psr f/w
+ * @stream: stream state
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_psr_enable(struct dc_stream_state *stream)
+{
+	struct dc_link *link = stream->link;
+	unsigned int vsync_rate_hz = 0;
+	struct dc_static_screen_params params = {0};
+	/* Calculate number of static frames before generating interrupt to
+	 * enter PSR.
+	 */
+	// Init fail safe of 2 frames static
+	unsigned int num_frames_static = 2;
+	unsigned int power_opt = 0;
+	bool psr_enable = true;
+
+	DRM_DEBUG_DRIVER("Enabling psr...\n");
+
+	vsync_rate_hz = div64_u64(div64_u64((
+			stream->timing.pix_clk_100hz * 100),
+			stream->timing.v_total),
+			stream->timing.h_total);
+
+	/* Round up
+	 * Calculate number of frames such that at least 30 ms of time has
+	 * passed.
+	 */
+	if (vsync_rate_hz != 0) {
+		unsigned int frame_time_microsec = 1000000 / vsync_rate_hz;
+		num_frames_static = (30000 / frame_time_microsec) + 1;
+	}
+
+	params.triggers.cursor_update = true;
+	params.triggers.overlay_update = true;
+	params.triggers.surface_update = true;
+	params.num_frames = num_frames_static;
+
+	dc_stream_set_static_screen_params(link->ctx->dc,
+					   &stream, 1,
+					   &params);
+
+	/*
+	 * Only enable static-screen optimizations for PSR1. For PSR SU, this
+	 * causes vstartup interrupt issues, used by amdgpu_dm to send vblank
+	 * events.
+	 */
+	if (link->psr_settings.psr_version < DC_PSR_VERSION_SU_1)
+		power_opt |= psr_power_opt_z10_static_screen;
+
+	return dc_link_set_psr_allow_active(link, &psr_enable, false, false, &power_opt);
+}
+
+/*
+ * amdgpu_dm_psr_disable() - disable psr f/w
+ * @stream:  stream state
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_psr_disable(struct dc_stream_state *stream)
+{
+	unsigned int power_opt = 0;
+	bool psr_enable = false;
+
+	DRM_DEBUG_DRIVER("Disabling psr...\n");
+
+	return dc_link_set_psr_allow_active(stream->link, &psr_enable, true, false, &power_opt);
+}
+
+/*
+ * amdgpu_dm_psr_disable() - disable psr f/w
+ * if psr is enabled on any stream
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm)
+{
+	DRM_DEBUG_DRIVER("Disabling psr if psr is enabled on any stream\n");
+	return dc_set_psr_allow_active(dm->dc, false);
+}
+