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, 734 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_hfi.c b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
new file mode 100644
index 000000000..2cc83e049
--- /dev/null
+++ b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
@@ -0,0 +1,734 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2017-2018 The Linux Foundation. All rights reserved. */
+
+#include <linux/completion.h>
+#include <linux/circ_buf.h>
+#include <linux/list.h>
+
+#include "a6xx_gmu.h"
+#include "a6xx_gmu.xml.h"
+#include "a6xx_gpu.h"
+
+#define HFI_MSG_ID(val) [val] = #val
+
+static const char * const a6xx_hfi_msg_id[] = {
+	HFI_MSG_ID(HFI_H2F_MSG_INIT),
+	HFI_MSG_ID(HFI_H2F_MSG_FW_VERSION),
+	HFI_MSG_ID(HFI_H2F_MSG_BW_TABLE),
+	HFI_MSG_ID(HFI_H2F_MSG_PERF_TABLE),
+	HFI_MSG_ID(HFI_H2F_MSG_TEST),
+	HFI_MSG_ID(HFI_H2F_MSG_START),
+	HFI_MSG_ID(HFI_H2F_MSG_CORE_FW_START),
+	HFI_MSG_ID(HFI_H2F_MSG_GX_BW_PERF_VOTE),
+	HFI_MSG_ID(HFI_H2F_MSG_PREPARE_SLUMBER),
+};
+
+static int a6xx_hfi_queue_read(struct a6xx_gmu *gmu,
+	struct a6xx_hfi_queue *queue, u32 *data, u32 dwords)
+{
+	struct a6xx_hfi_queue_header *header = queue->header;
+	u32 i, hdr, index = header->read_index;
+
+	if (header->read_index == header->write_index) {
+		header->rx_request = 1;
+		return 0;
+	}
+
+	hdr = queue->data[index];
+
+	queue->history[(queue->history_idx++) % HFI_HISTORY_SZ] = index;
+
+	/*
+	 * If we are to assume that the GMU firmware is in fact a rational actor
+	 * and is programmed to not send us a larger response than we expect
+	 * then we can also assume that if the header size is unexpectedly large
+	 * that it is due to memory corruption and/or hardware failure. In this
+	 * case the only reasonable course of action is to BUG() to help harden
+	 * the failure.
+	 */
+
+	BUG_ON(HFI_HEADER_SIZE(hdr) > dwords);
+
+	for (i = 0; i < HFI_HEADER_SIZE(hdr); i++) {
+		data[i] = queue->data[index];
+		index = (index + 1) % header->size;
+	}
+
+	if (!gmu->legacy)
+		index = ALIGN(index, 4) % header->size;
+
+	header->read_index = index;
+	return HFI_HEADER_SIZE(hdr);
+}
+
+static int a6xx_hfi_queue_write(struct a6xx_gmu *gmu,
+	struct a6xx_hfi_queue *queue, u32 *data, u32 dwords)
+{
+	struct a6xx_hfi_queue_header *header = queue->header;
+	u32 i, space, index = header->write_index;
+
+	spin_lock(&queue->lock);
+
+	space = CIRC_SPACE(header->write_index, header->read_index,
+		header->size);
+	if (space < dwords) {
+		header->dropped++;
+		spin_unlock(&queue->lock);
+		return -ENOSPC;
+	}
+
+	queue->history[(queue->history_idx++) % HFI_HISTORY_SZ] = index;
+
+	for (i = 0; i < dwords; i++) {
+		queue->data[index] = data[i];
+		index = (index + 1) % header->size;
+	}
+
+	/* Cookify any non used data at the end of the write buffer */
+	if (!gmu->legacy) {
+		for (; index % 4; index = (index + 1) % header->size)
+			queue->data[index] = 0xfafafafa;
+	}
+
+	header->write_index = index;
+	spin_unlock(&queue->lock);
+
+	gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 0x01);
+	return 0;
+}
+
+static int a6xx_hfi_wait_for_ack(struct a6xx_gmu *gmu, u32 id, u32 seqnum,
+		u32 *payload, u32 payload_size)
+{
+	struct a6xx_hfi_queue *queue = &gmu->queues[HFI_RESPONSE_QUEUE];
+	u32 val;
+	int ret;
+
+	/* Wait for a response */
+	ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO, val,
+		val & A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ, 100, 5000);
+
+	if (ret) {
+		DRM_DEV_ERROR(gmu->dev,
+			"Message %s id %d timed out waiting for response\n",
+			a6xx_hfi_msg_id[id], seqnum);
+		return -ETIMEDOUT;
+	}
+
+	/* Clear the interrupt */
+	gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR,
+		A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ);
+
+	for (;;) {
+		struct a6xx_hfi_msg_response resp;
+
+		/* Get the next packet */
+		ret = a6xx_hfi_queue_read(gmu, queue, (u32 *) &resp,
+			sizeof(resp) >> 2);
+
+		/* If the queue is empty our response never made it */
+		if (!ret) {
+			DRM_DEV_ERROR(gmu->dev,
+				"The HFI response queue is unexpectedly empty\n");
+
+			return -ENOENT;
+		}
+
+		if (HFI_HEADER_ID(resp.header) == HFI_F2H_MSG_ERROR) {
+			struct a6xx_hfi_msg_error *error =
+				(struct a6xx_hfi_msg_error *) &resp;
+
+			DRM_DEV_ERROR(gmu->dev, "GMU firmware error %d\n",
+				error->code);
+			continue;
+		}
+
+		if (seqnum != HFI_HEADER_SEQNUM(resp.ret_header)) {
+			DRM_DEV_ERROR(gmu->dev,
+				"Unexpected message id %d on the response queue\n",
+				HFI_HEADER_SEQNUM(resp.ret_header));
+			continue;
+		}
+
+		if (resp.error) {
+			DRM_DEV_ERROR(gmu->dev,
+				"Message %s id %d returned error %d\n",
+				a6xx_hfi_msg_id[id], seqnum, resp.error);
+			return -EINVAL;
+		}
+
+		/* All is well, copy over the buffer */
+		if (payload && payload_size)
+			memcpy(payload, resp.payload,
+				min_t(u32, payload_size, sizeof(resp.payload)));
+
+		return 0;
+	}
+}
+
+static int a6xx_hfi_send_msg(struct a6xx_gmu *gmu, int id,
+		void *data, u32 size, u32 *payload, u32 payload_size)
+{
+	struct a6xx_hfi_queue *queue = &gmu->queues[HFI_COMMAND_QUEUE];
+	int ret, dwords = size >> 2;
+	u32 seqnum;
+
+	seqnum = atomic_inc_return(&queue->seqnum) % 0xfff;
+
+	/* First dword of the message is the message header - fill it in */
+	*((u32 *) data) = (seqnum << 20) | (HFI_MSG_CMD << 16) |
+		(dwords << 8) | id;
+
+	ret = a6xx_hfi_queue_write(gmu, queue, data, dwords);
+	if (ret) {
+		DRM_DEV_ERROR(gmu->dev, "Unable to send message %s id %d\n",
+			a6xx_hfi_msg_id[id], seqnum);
+		return ret;
+	}
+
+	return a6xx_hfi_wait_for_ack(gmu, id, seqnum, payload, payload_size);
+}
+
+static int a6xx_hfi_send_gmu_init(struct a6xx_gmu *gmu, int boot_state)
+{
+	struct a6xx_hfi_msg_gmu_init_cmd msg = { 0 };
+
+	msg.dbg_buffer_addr = (u32) gmu->debug.iova;
+	msg.dbg_buffer_size = (u32) gmu->debug.size;
+	msg.boot_state = boot_state;
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_INIT, &msg, sizeof(msg),
+		NULL, 0);
+}
+
+static int a6xx_hfi_get_fw_version(struct a6xx_gmu *gmu, u32 *version)
+{
+	struct a6xx_hfi_msg_fw_version msg = { 0 };
+
+	/* Currently supporting version 1.10 */
+	msg.supported_version = (1 << 28) | (1 << 19) | (1 << 17);
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_FW_VERSION, &msg, sizeof(msg),
+		version, sizeof(*version));
+}
+
+static int a6xx_hfi_send_perf_table_v1(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_msg_perf_table_v1 msg = { 0 };
+	int i;
+
+	msg.num_gpu_levels = gmu->nr_gpu_freqs;
+	msg.num_gmu_levels = gmu->nr_gmu_freqs;
+
+	for (i = 0; i < gmu->nr_gpu_freqs; i++) {
+		msg.gx_votes[i].vote = gmu->gx_arc_votes[i];
+		msg.gx_votes[i].freq = gmu->gpu_freqs[i] / 1000;
+	}
+
+	for (i = 0; i < gmu->nr_gmu_freqs; i++) {
+		msg.cx_votes[i].vote = gmu->cx_arc_votes[i];
+		msg.cx_votes[i].freq = gmu->gmu_freqs[i] / 1000;
+	}
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_PERF_TABLE, &msg, sizeof(msg),
+		NULL, 0);
+}
+
+static int a6xx_hfi_send_perf_table(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_msg_perf_table msg = { 0 };
+	int i;
+
+	msg.num_gpu_levels = gmu->nr_gpu_freqs;
+	msg.num_gmu_levels = gmu->nr_gmu_freqs;
+
+	for (i = 0; i < gmu->nr_gpu_freqs; i++) {
+		msg.gx_votes[i].vote = gmu->gx_arc_votes[i];
+		msg.gx_votes[i].acd = 0xffffffff;
+		msg.gx_votes[i].freq = gmu->gpu_freqs[i] / 1000;
+	}
+
+	for (i = 0; i < gmu->nr_gmu_freqs; i++) {
+		msg.cx_votes[i].vote = gmu->cx_arc_votes[i];
+		msg.cx_votes[i].freq = gmu->gmu_freqs[i] / 1000;
+	}
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_PERF_TABLE, &msg, sizeof(msg),
+		NULL, 0);
+}
+
+static void a618_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	/* Send a single "off" entry since the 618 GMU doesn't do bus scaling */
+	msg->bw_level_num = 1;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x01;
+
+	msg->ddr_cmds_addrs[0] = 0x50000;
+	msg->ddr_cmds_addrs[1] = 0x5003c;
+	msg->ddr_cmds_addrs[2] = 0x5000c;
+
+	msg->ddr_cmds_data[0][0] =  0x40000000;
+	msg->ddr_cmds_data[0][1] =  0x40000000;
+	msg->ddr_cmds_data[0][2] =  0x40000000;
+
+	/*
+	 * These are the CX (CNOC) votes - these are used by the GMU but the
+	 * votes are known and fixed for the target
+	 */
+	msg->cnoc_cmds_num = 1;
+	msg->cnoc_wait_bitmask = 0x01;
+
+	msg->cnoc_cmds_addrs[0] = 0x5007c;
+	msg->cnoc_cmds_data[0][0] =  0x40000000;
+	msg->cnoc_cmds_data[1][0] =  0x60000001;
+}
+
+static void a619_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	msg->bw_level_num = 13;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x0;
+
+	msg->ddr_cmds_addrs[0] = 0x50000;
+	msg->ddr_cmds_addrs[1] = 0x50004;
+	msg->ddr_cmds_addrs[2] = 0x50080;
+
+	msg->ddr_cmds_data[0][0]  = 0x40000000;
+	msg->ddr_cmds_data[0][1]  = 0x40000000;
+	msg->ddr_cmds_data[0][2]  = 0x40000000;
+	msg->ddr_cmds_data[1][0]  = 0x6000030c;
+	msg->ddr_cmds_data[1][1]  = 0x600000db;
+	msg->ddr_cmds_data[1][2]  = 0x60000008;
+	msg->ddr_cmds_data[2][0]  = 0x60000618;
+	msg->ddr_cmds_data[2][1]  = 0x600001b6;
+	msg->ddr_cmds_data[2][2]  = 0x60000008;
+	msg->ddr_cmds_data[3][0]  = 0x60000925;
+	msg->ddr_cmds_data[3][1]  = 0x60000291;
+	msg->ddr_cmds_data[3][2]  = 0x60000008;
+	msg->ddr_cmds_data[4][0]  = 0x60000dc1;
+	msg->ddr_cmds_data[4][1]  = 0x600003dc;
+	msg->ddr_cmds_data[4][2]  = 0x60000008;
+	msg->ddr_cmds_data[5][0]  = 0x600010ad;
+	msg->ddr_cmds_data[5][1]  = 0x600004ae;
+	msg->ddr_cmds_data[5][2]  = 0x60000008;
+	msg->ddr_cmds_data[6][0]  = 0x600014c3;
+	msg->ddr_cmds_data[6][1]  = 0x600005d4;
+	msg->ddr_cmds_data[6][2]  = 0x60000008;
+	msg->ddr_cmds_data[7][0]  = 0x6000176a;
+	msg->ddr_cmds_data[7][1]  = 0x60000693;
+	msg->ddr_cmds_data[7][2]  = 0x60000008;
+	msg->ddr_cmds_data[8][0]  = 0x60001f01;
+	msg->ddr_cmds_data[8][1]  = 0x600008b5;
+	msg->ddr_cmds_data[8][2]  = 0x60000008;
+	msg->ddr_cmds_data[9][0]  = 0x60002940;
+	msg->ddr_cmds_data[9][1]  = 0x60000b95;
+	msg->ddr_cmds_data[9][2]  = 0x60000008;
+	msg->ddr_cmds_data[10][0] = 0x60002f68;
+	msg->ddr_cmds_data[10][1] = 0x60000d50;
+	msg->ddr_cmds_data[10][2] = 0x60000008;
+	msg->ddr_cmds_data[11][0] = 0x60003700;
+	msg->ddr_cmds_data[11][1] = 0x60000f71;
+	msg->ddr_cmds_data[11][2] = 0x60000008;
+	msg->ddr_cmds_data[12][0] = 0x60003fce;
+	msg->ddr_cmds_data[12][1] = 0x600011ea;
+	msg->ddr_cmds_data[12][2] = 0x60000008;
+
+	msg->cnoc_cmds_num = 1;
+	msg->cnoc_wait_bitmask = 0x0;
+
+	msg->cnoc_cmds_addrs[0] = 0x50054;
+
+	msg->cnoc_cmds_data[0][0] = 0x40000000;
+}
+
+static void a640_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	/*
+	 * Send a single "off" entry just to get things running
+	 * TODO: bus scaling
+	 */
+	msg->bw_level_num = 1;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x01;
+
+	msg->ddr_cmds_addrs[0] = 0x50000;
+	msg->ddr_cmds_addrs[1] = 0x5003c;
+	msg->ddr_cmds_addrs[2] = 0x5000c;
+
+	msg->ddr_cmds_data[0][0] =  0x40000000;
+	msg->ddr_cmds_data[0][1] =  0x40000000;
+	msg->ddr_cmds_data[0][2] =  0x40000000;
+
+	/*
+	 * These are the CX (CNOC) votes - these are used by the GMU but the
+	 * votes are known and fixed for the target
+	 */
+	msg->cnoc_cmds_num = 3;
+	msg->cnoc_wait_bitmask = 0x01;
+
+	msg->cnoc_cmds_addrs[0] = 0x50034;
+	msg->cnoc_cmds_addrs[1] = 0x5007c;
+	msg->cnoc_cmds_addrs[2] = 0x5004c;
+
+	msg->cnoc_cmds_data[0][0] =  0x40000000;
+	msg->cnoc_cmds_data[0][1] =  0x00000000;
+	msg->cnoc_cmds_data[0][2] =  0x40000000;
+
+	msg->cnoc_cmds_data[1][0] =  0x60000001;
+	msg->cnoc_cmds_data[1][1] =  0x20000001;
+	msg->cnoc_cmds_data[1][2] =  0x60000001;
+}
+
+static void a650_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	/*
+	 * Send a single "off" entry just to get things running
+	 * TODO: bus scaling
+	 */
+	msg->bw_level_num = 1;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x01;
+
+	msg->ddr_cmds_addrs[0] = 0x50000;
+	msg->ddr_cmds_addrs[1] = 0x50004;
+	msg->ddr_cmds_addrs[2] = 0x5007c;
+
+	msg->ddr_cmds_data[0][0] =  0x40000000;
+	msg->ddr_cmds_data[0][1] =  0x40000000;
+	msg->ddr_cmds_data[0][2] =  0x40000000;
+
+	/*
+	 * These are the CX (CNOC) votes - these are used by the GMU but the
+	 * votes are known and fixed for the target
+	 */
+	msg->cnoc_cmds_num = 1;
+	msg->cnoc_wait_bitmask = 0x01;
+
+	msg->cnoc_cmds_addrs[0] = 0x500a4;
+	msg->cnoc_cmds_data[0][0] =  0x40000000;
+	msg->cnoc_cmds_data[1][0] =  0x60000001;
+}
+
+static void a660_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	/*
+	 * Send a single "off" entry just to get things running
+	 * TODO: bus scaling
+	 */
+	msg->bw_level_num = 1;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x01;
+
+	msg->ddr_cmds_addrs[0] = 0x50004;
+	msg->ddr_cmds_addrs[1] = 0x500a0;
+	msg->ddr_cmds_addrs[2] = 0x50000;
+
+	msg->ddr_cmds_data[0][0] =  0x40000000;
+	msg->ddr_cmds_data[0][1] =  0x40000000;
+	msg->ddr_cmds_data[0][2] =  0x40000000;
+
+	/*
+	 * These are the CX (CNOC) votes - these are used by the GMU but the
+	 * votes are known and fixed for the target
+	 */
+	msg->cnoc_cmds_num = 1;
+	msg->cnoc_wait_bitmask = 0x01;
+
+	msg->cnoc_cmds_addrs[0] = 0x50070;
+	msg->cnoc_cmds_data[0][0] =  0x40000000;
+	msg->cnoc_cmds_data[1][0] =  0x60000001;
+}
+
+static void adreno_7c3_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	/*
+	 * Send a single "off" entry just to get things running
+	 * TODO: bus scaling
+	 */
+	msg->bw_level_num = 1;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x07;
+
+	msg->ddr_cmds_addrs[0] = 0x50004;
+	msg->ddr_cmds_addrs[1] = 0x50000;
+	msg->ddr_cmds_addrs[2] = 0x50088;
+
+	msg->ddr_cmds_data[0][0] =  0x40000000;
+	msg->ddr_cmds_data[0][1] =  0x40000000;
+	msg->ddr_cmds_data[0][2] =  0x40000000;
+
+	/*
+	 * These are the CX (CNOC) votes - these are used by the GMU but the
+	 * votes are known and fixed for the target
+	 */
+	msg->cnoc_cmds_num = 1;
+	msg->cnoc_wait_bitmask = 0x01;
+
+	msg->cnoc_cmds_addrs[0] = 0x5006c;
+	msg->cnoc_cmds_data[0][0] =  0x40000000;
+	msg->cnoc_cmds_data[1][0] =  0x60000001;
+}
+static void a6xx_build_bw_table(struct a6xx_hfi_msg_bw_table *msg)
+{
+	/* Send a single "off" entry since the 630 GMU doesn't do bus scaling */
+	msg->bw_level_num = 1;
+
+	msg->ddr_cmds_num = 3;
+	msg->ddr_wait_bitmask = 0x07;
+
+	msg->ddr_cmds_addrs[0] = 0x50000;
+	msg->ddr_cmds_addrs[1] = 0x5005c;
+	msg->ddr_cmds_addrs[2] = 0x5000c;
+
+	msg->ddr_cmds_data[0][0] =  0x40000000;
+	msg->ddr_cmds_data[0][1] =  0x40000000;
+	msg->ddr_cmds_data[0][2] =  0x40000000;
+
+	/*
+	 * These are the CX (CNOC) votes.  This is used but the values for the
+	 * sdm845 GMU are known and fixed so we can hard code them.
+	 */
+
+	msg->cnoc_cmds_num = 3;
+	msg->cnoc_wait_bitmask = 0x05;
+
+	msg->cnoc_cmds_addrs[0] = 0x50034;
+	msg->cnoc_cmds_addrs[1] = 0x5007c;
+	msg->cnoc_cmds_addrs[2] = 0x5004c;
+
+	msg->cnoc_cmds_data[0][0] =  0x40000000;
+	msg->cnoc_cmds_data[0][1] =  0x00000000;
+	msg->cnoc_cmds_data[0][2] =  0x40000000;
+
+	msg->cnoc_cmds_data[1][0] =  0x60000001;
+	msg->cnoc_cmds_data[1][1] =  0x20000001;
+	msg->cnoc_cmds_data[1][2] =  0x60000001;
+}
+
+
+static int a6xx_hfi_send_bw_table(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_msg_bw_table msg = { 0 };
+	struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu);
+	struct adreno_gpu *adreno_gpu = &a6xx_gpu->base;
+
+	if (adreno_is_a618(adreno_gpu))
+		a618_build_bw_table(&msg);
+	else if (adreno_is_a619(adreno_gpu))
+		a619_build_bw_table(&msg);
+	else if (adreno_is_a640_family(adreno_gpu))
+		a640_build_bw_table(&msg);
+	else if (adreno_is_a650(adreno_gpu))
+		a650_build_bw_table(&msg);
+	else if (adreno_is_7c3(adreno_gpu))
+		adreno_7c3_build_bw_table(&msg);
+	else if (adreno_is_a660(adreno_gpu))
+		a660_build_bw_table(&msg);
+	else
+		a6xx_build_bw_table(&msg);
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_BW_TABLE, &msg, sizeof(msg),
+		NULL, 0);
+}
+
+static int a6xx_hfi_send_test(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_msg_test msg = { 0 };
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_TEST, &msg, sizeof(msg),
+		NULL, 0);
+}
+
+static int a6xx_hfi_send_start(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_msg_start msg = { 0 };
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_START, &msg, sizeof(msg),
+		NULL, 0);
+}
+
+static int a6xx_hfi_send_core_fw_start(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_msg_core_fw_start msg = { 0 };
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_CORE_FW_START, &msg,
+		sizeof(msg), NULL, 0);
+}
+
+int a6xx_hfi_set_freq(struct a6xx_gmu *gmu, int index)
+{
+	struct a6xx_hfi_gx_bw_perf_vote_cmd msg = { 0 };
+
+	msg.ack_type = 1; /* blocking */
+	msg.freq = index;
+	msg.bw = 0; /* TODO: bus scaling */
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_GX_BW_PERF_VOTE, &msg,
+		sizeof(msg), NULL, 0);
+}
+
+int a6xx_hfi_send_prep_slumber(struct a6xx_gmu *gmu)
+{
+	struct a6xx_hfi_prep_slumber_cmd msg = { 0 };
+
+	/* TODO: should freq and bw fields be non-zero ? */
+
+	return a6xx_hfi_send_msg(gmu, HFI_H2F_MSG_PREPARE_SLUMBER, &msg,
+		sizeof(msg), NULL, 0);
+}
+
+static int a6xx_hfi_start_v1(struct a6xx_gmu *gmu, int boot_state)
+{
+	int ret;
+
+	ret = a6xx_hfi_send_gmu_init(gmu, boot_state);
+	if (ret)
+		return ret;
+
+	ret = a6xx_hfi_get_fw_version(gmu, NULL);
+	if (ret)
+		return ret;
+
+	/*
+	 * We have to get exchange version numbers per the sequence but at this
+	 * point th kernel driver doesn't need to know the exact version of
+	 * the GMU firmware
+	 */
+
+	ret = a6xx_hfi_send_perf_table_v1(gmu);
+	if (ret)
+		return ret;
+
+	ret = a6xx_hfi_send_bw_table(gmu);
+	if (ret)
+		return ret;
+
+	/*
+	 * Let the GMU know that there won't be any more HFI messages until next
+	 * boot
+	 */
+	a6xx_hfi_send_test(gmu);
+
+	return 0;
+}
+
+int a6xx_hfi_start(struct a6xx_gmu *gmu, int boot_state)
+{
+	int ret;
+
+	if (gmu->legacy)
+		return a6xx_hfi_start_v1(gmu, boot_state);
+
+
+	ret = a6xx_hfi_send_perf_table(gmu);
+	if (ret)
+		return ret;
+
+	ret = a6xx_hfi_send_bw_table(gmu);
+	if (ret)
+		return ret;
+
+	ret = a6xx_hfi_send_core_fw_start(gmu);
+	if (ret)
+		return ret;
+
+	/*
+	 * Downstream driver sends this in its "a6xx_hw_init" equivalent,
+	 * but seems to be no harm in sending it here
+	 */
+	ret = a6xx_hfi_send_start(gmu);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+void a6xx_hfi_stop(struct a6xx_gmu *gmu)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(gmu->queues); i++) {
+		struct a6xx_hfi_queue *queue = &gmu->queues[i];
+
+		if (!queue->header)
+			continue;
+
+		if (queue->header->read_index != queue->header->write_index)
+			DRM_DEV_ERROR(gmu->dev, "HFI queue %d is not empty\n", i);
+
+		queue->header->read_index = 0;
+		queue->header->write_index = 0;
+
+		memset(&queue->history, 0xff, sizeof(queue->history));
+		queue->history_idx = 0;
+	}
+}
+
+static void a6xx_hfi_queue_init(struct a6xx_hfi_queue *queue,
+		struct a6xx_hfi_queue_header *header, void *virt, u64 iova,
+		u32 id)
+{
+	spin_lock_init(&queue->lock);
+	queue->header = header;
+	queue->data = virt;
+	atomic_set(&queue->seqnum, 0);
+
+	memset(&queue->history, 0xff, sizeof(queue->history));
+	queue->history_idx = 0;
+
+	/* Set up the shared memory header */
+	header->iova = iova;
+	header->type =  10 << 8 | id;
+	header->status = 1;
+	header->size = SZ_4K >> 2;
+	header->msg_size = 0;
+	header->dropped = 0;
+	header->rx_watermark = 1;
+	header->tx_watermark = 1;
+	header->rx_request = 1;
+	header->tx_request = 0;
+	header->read_index = 0;
+	header->write_index = 0;
+}
+
+void a6xx_hfi_init(struct a6xx_gmu *gmu)
+{
+	struct a6xx_gmu_bo *hfi = &gmu->hfi;
+	struct a6xx_hfi_queue_table_header *table = hfi->virt;
+	struct a6xx_hfi_queue_header *headers = hfi->virt + sizeof(*table);
+	u64 offset;
+	int table_size;
+
+	/*
+	 * The table size is the size of the table header plus all of the queue
+	 * headers
+	 */
+	table_size = sizeof(*table);
+	table_size += (ARRAY_SIZE(gmu->queues) *
+		sizeof(struct a6xx_hfi_queue_header));
+
+	table->version = 0;
+	table->size = table_size;
+	/* First queue header is located immediately after the table header */
+	table->qhdr0_offset = sizeof(*table) >> 2;
+	table->qhdr_size = sizeof(struct a6xx_hfi_queue_header) >> 2;
+	table->num_queues = ARRAY_SIZE(gmu->queues);
+	table->active_queues = ARRAY_SIZE(gmu->queues);
+
+	/* Command queue */
+	offset = SZ_4K;
+	a6xx_hfi_queue_init(&gmu->queues[0], &headers[0], hfi->virt + offset,
+		hfi->iova + offset, 0);
+
+	/* GMU response queue */
+	offset += SZ_4K;
+	a6xx_hfi_queue_init(&gmu->queues[1], &headers[1], hfi->virt + offset,
+		hfi->iova + offset, gmu->legacy ? 4 : 1);
+}