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, 463 insertions, 0 deletions

diff --git a/drivers/media/platform/amphion/vpu_cmds.c b/drivers/media/platform/amphion/vpu_cmds.c
new file mode 100644
index 000000000..fa581ba6b
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_cmds.c
@@ -0,0 +1,463 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#include <linux/init.h>
+#include <linux/interconnect.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/vmalloc.h>
+#include "vpu.h"
+#include "vpu_defs.h"
+#include "vpu_cmds.h"
+#include "vpu_rpc.h"
+#include "vpu_mbox.h"
+
+struct vpu_cmd_request {
+	u32 request;
+	u32 response;
+	u32 handled;
+};
+
+struct vpu_cmd_t {
+	struct list_head list;
+	u32 id;
+	struct vpu_cmd_request *request;
+	struct vpu_rpc_event *pkt;
+	unsigned long key;
+};
+
+static struct vpu_cmd_request vpu_cmd_requests[] = {
+	{
+		.request = VPU_CMD_ID_CONFIGURE_CODEC,
+		.response = VPU_MSG_ID_MEM_REQUEST,
+		.handled = 1,
+	},
+	{
+		.request = VPU_CMD_ID_START,
+		.response = VPU_MSG_ID_START_DONE,
+		.handled = 0,
+	},
+	{
+		.request = VPU_CMD_ID_STOP,
+		.response = VPU_MSG_ID_STOP_DONE,
+		.handled = 0,
+	},
+	{
+		.request = VPU_CMD_ID_ABORT,
+		.response = VPU_MSG_ID_ABORT_DONE,
+		.handled = 0,
+	},
+	{
+		.request = VPU_CMD_ID_RST_BUF,
+		.response = VPU_MSG_ID_BUF_RST,
+		.handled = 1,
+	},
+};
+
+static int vpu_cmd_send(struct vpu_core *core, struct vpu_rpc_event *pkt)
+{
+	int ret = 0;
+
+	ret = vpu_iface_send_cmd(core, pkt);
+	if (ret)
+		return ret;
+
+	/*write cmd data to cmd buffer before trigger a cmd interrupt*/
+	mb();
+	vpu_mbox_send_type(core, COMMAND);
+
+	return ret;
+}
+
+static struct vpu_cmd_t *vpu_alloc_cmd(struct vpu_inst *inst, u32 id, void *data)
+{
+	struct vpu_cmd_t *cmd;
+	int i;
+	int ret;
+
+	cmd = vzalloc(sizeof(*cmd));
+	if (!cmd)
+		return NULL;
+
+	cmd->pkt = vzalloc(sizeof(*cmd->pkt));
+	if (!cmd->pkt) {
+		vfree(cmd);
+		return NULL;
+	}
+
+	cmd->id = id;
+	ret = vpu_iface_pack_cmd(inst->core, cmd->pkt, inst->id, id, data);
+	if (ret) {
+		dev_err(inst->dev, "iface pack cmd(%d) fail\n", id);
+		vfree(cmd->pkt);
+		vfree(cmd);
+		return NULL;
+	}
+	for (i = 0; i < ARRAY_SIZE(vpu_cmd_requests); i++) {
+		if (vpu_cmd_requests[i].request == id) {
+			cmd->request = &vpu_cmd_requests[i];
+			break;
+		}
+	}
+
+	return cmd;
+}
+
+static void vpu_free_cmd(struct vpu_cmd_t *cmd)
+{
+	if (!cmd)
+		return;
+	vfree(cmd->pkt);
+	vfree(cmd);
+}
+
+static int vpu_session_process_cmd(struct vpu_inst *inst, struct vpu_cmd_t *cmd)
+{
+	int ret;
+
+	dev_dbg(inst->dev, "[%d]send cmd(0x%x)\n", inst->id, cmd->id);
+	vpu_iface_pre_send_cmd(inst);
+	ret = vpu_cmd_send(inst->core, cmd->pkt);
+	if (!ret) {
+		vpu_iface_post_send_cmd(inst);
+		vpu_inst_record_flow(inst, cmd->id);
+	} else {
+		dev_err(inst->dev, "[%d] iface send cmd(0x%x) fail\n", inst->id, cmd->id);
+	}
+
+	return ret;
+}
+
+static void vpu_process_cmd_request(struct vpu_inst *inst)
+{
+	struct vpu_cmd_t *cmd;
+	struct vpu_cmd_t *tmp;
+
+	if (!inst || inst->pending)
+		return;
+
+	list_for_each_entry_safe(cmd, tmp, &inst->cmd_q, list) {
+		list_del_init(&cmd->list);
+		if (vpu_session_process_cmd(inst, cmd))
+			dev_err(inst->dev, "[%d] process cmd(%d) fail\n", inst->id, cmd->id);
+		if (cmd->request) {
+			inst->pending = (void *)cmd;
+			break;
+		}
+		vpu_free_cmd(cmd);
+	}
+}
+
+static int vpu_request_cmd(struct vpu_inst *inst, u32 id, void *data,
+			   unsigned long *key, int *sync)
+{
+	struct vpu_core *core;
+	struct vpu_cmd_t *cmd;
+
+	if (!inst || !inst->core)
+		return -EINVAL;
+
+	core = inst->core;
+	cmd = vpu_alloc_cmd(inst, id, data);
+	if (!cmd)
+		return -ENOMEM;
+
+	mutex_lock(&core->cmd_lock);
+	cmd->key = core->cmd_seq++;
+	if (key)
+		*key = cmd->key;
+	if (sync)
+		*sync = cmd->request ? true : false;
+	list_add_tail(&cmd->list, &inst->cmd_q);
+	vpu_process_cmd_request(inst);
+	mutex_unlock(&core->cmd_lock);
+
+	return 0;
+}
+
+static void vpu_clear_pending(struct vpu_inst *inst)
+{
+	if (!inst || !inst->pending)
+		return;
+
+	vpu_free_cmd(inst->pending);
+	wake_up_all(&inst->core->ack_wq);
+	inst->pending = NULL;
+}
+
+static bool vpu_check_response(struct vpu_cmd_t *cmd, u32 response, u32 handled)
+{
+	struct vpu_cmd_request *request;
+
+	if (!cmd || !cmd->request)
+		return false;
+
+	request = cmd->request;
+	if (request->response != response)
+		return false;
+	if (request->handled != handled)
+		return false;
+
+	return true;
+}
+
+int vpu_response_cmd(struct vpu_inst *inst, u32 response, u32 handled)
+{
+	struct vpu_core *core;
+
+	if (!inst || !inst->core)
+		return -EINVAL;
+
+	core = inst->core;
+	mutex_lock(&core->cmd_lock);
+	if (vpu_check_response(inst->pending, response, handled))
+		vpu_clear_pending(inst);
+
+	vpu_process_cmd_request(inst);
+	mutex_unlock(&core->cmd_lock);
+
+	return 0;
+}
+
+void vpu_clear_request(struct vpu_inst *inst)
+{
+	struct vpu_cmd_t *cmd;
+	struct vpu_cmd_t *tmp;
+
+	mutex_lock(&inst->core->cmd_lock);
+	if (inst->pending)
+		vpu_clear_pending(inst);
+
+	list_for_each_entry_safe(cmd, tmp, &inst->cmd_q, list) {
+		list_del_init(&cmd->list);
+		vpu_free_cmd(cmd);
+	}
+	mutex_unlock(&inst->core->cmd_lock);
+}
+
+static bool check_is_responsed(struct vpu_inst *inst, unsigned long key)
+{
+	struct vpu_core *core = inst->core;
+	struct vpu_cmd_t *cmd;
+	bool flag = true;
+
+	mutex_lock(&core->cmd_lock);
+	cmd = inst->pending;
+	if (cmd && key == cmd->key) {
+		flag = false;
+		goto exit;
+	}
+	list_for_each_entry(cmd, &inst->cmd_q, list) {
+		if (key == cmd->key) {
+			flag = false;
+			break;
+		}
+	}
+exit:
+	mutex_unlock(&core->cmd_lock);
+
+	return flag;
+}
+
+static int sync_session_response(struct vpu_inst *inst, unsigned long key, long timeout, int try)
+{
+	struct vpu_core *core;
+
+	if (!inst || !inst->core)
+		return -EINVAL;
+
+	core = inst->core;
+
+	call_void_vop(inst, wait_prepare);
+	wait_event_timeout(core->ack_wq, check_is_responsed(inst, key), timeout);
+	call_void_vop(inst, wait_finish);
+
+	if (!check_is_responsed(inst, key)) {
+		if (try)
+			return -EINVAL;
+		dev_err(inst->dev, "[%d] sync session timeout\n", inst->id);
+		set_bit(inst->id, &core->hang_mask);
+		mutex_lock(&inst->core->cmd_lock);
+		vpu_clear_pending(inst);
+		mutex_unlock(&inst->core->cmd_lock);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void vpu_core_keep_active(struct vpu_core *core)
+{
+	struct vpu_rpc_event pkt;
+
+	memset(&pkt, 0, sizeof(pkt));
+	vpu_iface_pack_cmd(core, &pkt, 0, VPU_CMD_ID_NOOP, NULL);
+
+	dev_dbg(core->dev, "try to wake up\n");
+	mutex_lock(&core->cmd_lock);
+	vpu_cmd_send(core, &pkt);
+	mutex_unlock(&core->cmd_lock);
+}
+
+static int vpu_session_send_cmd(struct vpu_inst *inst, u32 id, void *data)
+{
+	unsigned long key;
+	int sync = false;
+	int ret = -EINVAL;
+
+	if (inst->id < 0)
+		return -EINVAL;
+
+	ret = vpu_request_cmd(inst, id, data, &key, &sync);
+	if (ret)
+		goto exit;
+
+	/* workaround for a firmware issue,
+	 * firmware should be waked up by start or configure command,
+	 * but there is a very small change that firmware failed to wakeup.
+	 * in such case, try to wakeup firmware again by sending a noop command
+	 */
+	if (sync && (id == VPU_CMD_ID_CONFIGURE_CODEC || id == VPU_CMD_ID_START)) {
+		if (sync_session_response(inst, key, VPU_TIMEOUT_WAKEUP, 1))
+			vpu_core_keep_active(inst->core);
+		else
+			goto exit;
+	}
+
+	if (sync)
+		ret = sync_session_response(inst, key, VPU_TIMEOUT, 0);
+
+exit:
+	if (ret)
+		dev_err(inst->dev, "[%d] send cmd(0x%x) fail\n", inst->id, id);
+
+	return ret;
+}
+
+int vpu_session_configure_codec(struct vpu_inst *inst)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_CONFIGURE_CODEC, NULL);
+}
+
+int vpu_session_start(struct vpu_inst *inst)
+{
+	vpu_trace(inst->dev, "[%d]\n", inst->id);
+
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_START, NULL);
+}
+
+int vpu_session_stop(struct vpu_inst *inst)
+{
+	int ret;
+
+	vpu_trace(inst->dev, "[%d]\n", inst->id);
+
+	ret = vpu_session_send_cmd(inst, VPU_CMD_ID_STOP, NULL);
+	/* workaround for a firmware bug,
+	 * if the next command is too close after stop cmd,
+	 * the firmware may enter wfi wrongly.
+	 */
+	usleep_range(3000, 5000);
+	return ret;
+}
+
+int vpu_session_encode_frame(struct vpu_inst *inst, s64 timestamp)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_FRAME_ENCODE, &timestamp);
+}
+
+int vpu_session_alloc_fs(struct vpu_inst *inst, struct vpu_fs_info *fs)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_FS_ALLOC, fs);
+}
+
+int vpu_session_release_fs(struct vpu_inst *inst, struct vpu_fs_info *fs)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_FS_RELEASE, fs);
+}
+
+int vpu_session_abort(struct vpu_inst *inst)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_ABORT, NULL);
+}
+
+int vpu_session_rst_buf(struct vpu_inst *inst)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_RST_BUF, NULL);
+}
+
+int vpu_session_fill_timestamp(struct vpu_inst *inst, struct vpu_ts_info *info)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_TIMESTAMP, info);
+}
+
+int vpu_session_update_parameters(struct vpu_inst *inst, void *arg)
+{
+	if (inst->type & VPU_CORE_TYPE_DEC)
+		vpu_iface_set_decode_params(inst, arg, 1);
+	else
+		vpu_iface_set_encode_params(inst, arg, 1);
+
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_UPDATE_PARAMETER, arg);
+}
+
+int vpu_session_debug(struct vpu_inst *inst)
+{
+	return vpu_session_send_cmd(inst, VPU_CMD_ID_DEBUG, NULL);
+}
+
+int vpu_core_snapshot(struct vpu_core *core)
+{
+	struct vpu_inst *inst;
+	int ret;
+
+	if (!core || list_empty(&core->instances))
+		return 0;
+
+	inst = list_first_entry(&core->instances, struct vpu_inst, list);
+
+	reinit_completion(&core->cmp);
+	ret = vpu_session_send_cmd(inst, VPU_CMD_ID_SNAPSHOT, NULL);
+	if (ret)
+		return ret;
+	ret = wait_for_completion_timeout(&core->cmp, VPU_TIMEOUT);
+	if (!ret) {
+		dev_err(core->dev, "snapshot timeout\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+int vpu_core_sw_reset(struct vpu_core *core)
+{
+	struct vpu_rpc_event pkt;
+	int ret;
+
+	memset(&pkt, 0, sizeof(pkt));
+	vpu_iface_pack_cmd(core, &pkt, 0, VPU_CMD_ID_FIRM_RESET, NULL);
+
+	reinit_completion(&core->cmp);
+	mutex_lock(&core->cmd_lock);
+	ret = vpu_cmd_send(core, &pkt);
+	mutex_unlock(&core->cmd_lock);
+	if (ret)
+		return ret;
+	ret = wait_for_completion_timeout(&core->cmp, VPU_TIMEOUT);
+	if (!ret) {
+		dev_err(core->dev, "sw reset timeout\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}