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, 393 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc
new file mode 100644
index 000000000..757dda700
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/fuc/i2c_.fuc
@@ -0,0 +1,393 @@
+/*
+ * Copyright 2013 Red Hat 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: Ben Skeggs
+ */
+
+#define T_TIMEOUT  2200000
+#define T_RISEFALL 1000
+#define T_HOLD     5000
+
+#ifdef INCLUDE_PROC
+process(PROC_I2C_, #i2c_init, #i2c_recv)
+#endif
+
+/******************************************************************************
+ * I2C_ data segment
+ *****************************************************************************/
+#ifdef INCLUDE_DATA
+i2c_scl_map:
+.b32 NV_PPWR_OUTPUT_I2C_0_SCL
+.b32 NV_PPWR_OUTPUT_I2C_1_SCL
+.b32 NV_PPWR_OUTPUT_I2C_2_SCL
+.b32 NV_PPWR_OUTPUT_I2C_3_SCL
+.b32 NV_PPWR_OUTPUT_I2C_4_SCL
+.b32 NV_PPWR_OUTPUT_I2C_5_SCL
+.b32 NV_PPWR_OUTPUT_I2C_6_SCL
+.b32 NV_PPWR_OUTPUT_I2C_7_SCL
+.b32 NV_PPWR_OUTPUT_I2C_8_SCL
+.b32 NV_PPWR_OUTPUT_I2C_9_SCL
+i2c_sda_map:
+.b32 NV_PPWR_OUTPUT_I2C_0_SDA
+.b32 NV_PPWR_OUTPUT_I2C_1_SDA
+.b32 NV_PPWR_OUTPUT_I2C_2_SDA
+.b32 NV_PPWR_OUTPUT_I2C_3_SDA
+.b32 NV_PPWR_OUTPUT_I2C_4_SDA
+.b32 NV_PPWR_OUTPUT_I2C_5_SDA
+.b32 NV_PPWR_OUTPUT_I2C_6_SDA
+.b32 NV_PPWR_OUTPUT_I2C_7_SDA
+.b32 NV_PPWR_OUTPUT_I2C_8_SDA
+.b32 NV_PPWR_OUTPUT_I2C_9_SDA
+#if NVKM_PPWR_CHIPSET < GF119
+i2c_ctrl:
+.b32 0x00e138
+.b32 0x00e150
+.b32 0x00e168
+.b32 0x00e180
+.b32 0x00e254
+.b32 0x00e274
+.b32 0x00e764
+.b32 0x00e780
+.b32 0x00e79c
+.b32 0x00e7b8
+#endif
+#endif
+
+/******************************************************************************
+ * I2C_ code segment
+ *****************************************************************************/
+#ifdef INCLUDE_CODE
+
+// $r3  - value
+// $r2  - sda line
+// $r1  - scl line
+// $r0  - zero
+i2c_drive_scl:
+	cmp b32 $r3 0
+	bra e #i2c_drive_scl_lo
+	nv_iowr(NV_PPWR_OUTPUT_SET, $r1)
+	ret
+	i2c_drive_scl_lo:
+	nv_iowr(NV_PPWR_OUTPUT_CLR, $r1)
+	ret
+
+i2c_drive_sda:
+	cmp b32 $r3 0
+	bra e #i2c_drive_sda_lo
+	nv_iowr(NV_PPWR_OUTPUT_SET, $r2)
+	ret
+	i2c_drive_sda_lo:
+	nv_iowr(NV_PPWR_OUTPUT_CLR, $r2)
+	ret
+
+i2c_sense_scl:
+	bclr $flags $p1
+	nv_iord($r3, NV_PPWR_INPUT)
+	and $r3 $r1
+	bra z #i2c_sense_scl_done
+		bset $flags $p1
+	i2c_sense_scl_done:
+	ret
+
+i2c_sense_sda:
+	bclr $flags $p1
+	nv_iord($r3, NV_PPWR_INPUT)
+	and $r3 $r2
+	bra z #i2c_sense_sda_done
+		bset $flags $p1
+	i2c_sense_sda_done:
+	ret
+
+#define i2c_drive_scl(v) /*
+*/	mov $r3 (v) /*
+*/	call(i2c_drive_scl)
+#define i2c_drive_sda(v) /*
+*/	mov $r3 (v) /*
+*/	call(i2c_drive_sda)
+#define i2c_sense_scl() /*
+*/	call(i2c_sense_scl)
+#define i2c_sense_sda() /*
+*/	call(i2c_sense_sda)
+#define i2c_delay(v) /*
+*/	mov $r14 (v) /*
+*/	call(nsec)
+
+#define i2c_trace_init() /*
+*/	imm32($r6, 0x10000000) /*
+*/	sub b32 $r7 $r6 1 /*
+*/
+#define i2c_trace_down() /*
+*/	shr b32 $r6 4 /*
+*/	push $r5 /*
+*/	shl b32 $r5 $r6 4 /*
+*/	sub b32 $r5 $r6 /*
+*/	not b32 $r5 /*
+*/	and $r7 $r5 /*
+*/	pop $r5 /*
+*/
+#define i2c_trace_exit() /*
+*/	shl b32 $r6 4 /*
+*/
+#define i2c_trace_next() /*
+*/	add b32 $r7 $r6 /*
+*/
+#define i2c_trace_call(func) /*
+*/	i2c_trace_next() /*
+*/	i2c_trace_down() /*
+*/	call(func) /*
+*/	i2c_trace_exit() /*
+*/
+
+i2c_raise_scl:
+	push $r4
+	mov $r4 (T_TIMEOUT / T_RISEFALL)
+	i2c_drive_scl(1)
+	i2c_raise_scl_wait:
+		i2c_delay(T_RISEFALL)
+		i2c_sense_scl()
+		bra $p1 #i2c_raise_scl_done
+		sub b32 $r4 1
+		bra nz #i2c_raise_scl_wait
+	i2c_raise_scl_done:
+	pop $r4
+	ret
+
+i2c_start:
+	i2c_sense_scl()
+	bra not $p1 #i2c_start_rep
+	i2c_sense_sda()
+	bra not $p1 #i2c_start_rep
+	bra #i2c_start_send
+	i2c_start_rep:
+		i2c_drive_scl(0)
+		i2c_drive_sda(1)
+		i2c_trace_call(i2c_raise_scl)
+		bra not $p1 #i2c_start_out
+	i2c_start_send:
+	i2c_drive_sda(0)
+	i2c_delay(T_HOLD)
+	i2c_drive_scl(0)
+	i2c_delay(T_HOLD)
+	i2c_start_out:
+	ret
+
+i2c_stop:
+	i2c_drive_scl(0)
+	i2c_drive_sda(0)
+	i2c_delay(T_RISEFALL)
+	i2c_drive_scl(1)
+	i2c_delay(T_HOLD)
+	i2c_drive_sda(1)
+	i2c_delay(T_HOLD)
+	ret
+
+// $r3  - value
+// $r2  - sda line
+// $r1  - scl line
+// $r0  - zero
+i2c_bitw:
+	call(i2c_drive_sda)
+	i2c_delay(T_RISEFALL)
+	i2c_trace_call(i2c_raise_scl)
+	bra not $p1 #i2c_bitw_out
+	i2c_delay(T_HOLD)
+	i2c_drive_scl(0)
+	i2c_delay(T_HOLD)
+	i2c_bitw_out:
+	ret
+
+// $r3  - value (out)
+// $r2  - sda line
+// $r1  - scl line
+// $r0  - zero
+i2c_bitr:
+	i2c_drive_sda(1)
+	i2c_delay(T_RISEFALL)
+	i2c_trace_call(i2c_raise_scl)
+	bra not $p1 #i2c_bitr_done
+	i2c_sense_sda()
+	i2c_drive_scl(0)
+	i2c_delay(T_HOLD)
+	xbit $r3 $flags $p1
+	bset $flags $p1
+	i2c_bitr_done:
+	ret
+
+i2c_get_byte:
+	mov $r5 0
+	mov $r4 8
+	i2c_get_byte_next:
+		shl b32 $r5 1
+		i2c_trace_call(i2c_bitr)
+		bra not $p1 #i2c_get_byte_done
+		or $r5 $r3
+		sub b32 $r4 1
+		bra nz #i2c_get_byte_next
+	mov $r3 1
+	i2c_trace_call(i2c_bitw)
+	i2c_get_byte_done:
+	ret
+
+i2c_put_byte:
+	mov $r4 8
+	i2c_put_byte_next:
+		sub b32 $r4 1
+		xbit $r3 $r5 $r4
+		i2c_trace_call(i2c_bitw)
+		bra not $p1 #i2c_put_byte_done
+		cmp b32 $r4 0
+		bra ne #i2c_put_byte_next
+	i2c_trace_call(i2c_bitr)
+	bra not $p1 #i2c_put_byte_done
+	i2c_trace_next()
+	cmp b32 $r3 1
+	bra ne #i2c_put_byte_done
+	bclr $flags $p1	// nack
+	i2c_put_byte_done:
+	ret
+
+i2c_addr:
+	i2c_trace_call(i2c_start)
+	bra not $p1 #i2c_addr_done
+	extr $r3 $r12 I2C__MSG_DATA0_ADDR
+	shl b32 $r3 1
+	or $r5 $r3
+	i2c_trace_call(i2c_put_byte)
+	i2c_addr_done:
+	ret
+
+i2c_acquire_addr:
+	extr $r14 $r12 I2C__MSG_DATA0_PORT
+#if NVKM_PPWR_CHIPSET < GF119
+	shl b32 $r14 2
+	add b32 $r14 #i2c_ctrl
+	ld b32 $r14 D[$r14]
+#else
+	shl b32 $r14 5
+	add b32 $r14 0x00d014
+#endif
+	ret
+
+i2c_acquire:
+	call(i2c_acquire_addr)
+	call(rd32)
+	bset $r13 3
+	call(wr32)
+	ret
+
+i2c_release:
+	call(i2c_acquire_addr)
+	call(rd32)
+	bclr $r13 3
+	call(wr32)
+	ret
+
+// description
+//
+// $r15 - current (i2c)
+// $r14 - sender process name
+// $r13 - message
+// $r12 - data0
+// $r11 - data1
+// $r0  - zero
+i2c_recv:
+	bclr $flags $p1
+	extr $r1 $r12 I2C__MSG_DATA0_PORT
+	shl b32 $r1 2
+	cmp b32 $r1 (#i2c_sda_map - #i2c_scl_map)
+	bra ge #i2c_recv_done
+	add b32 $r3 $r1 #i2c_sda_map
+	ld b32 $r2 D[$r3]
+	add b32 $r3 $r1 #i2c_scl_map
+	ld b32 $r1 D[$r3]
+
+	bset $flags $p2
+	push $r13
+	push $r14
+
+	push $r13
+	i2c_trace_init()
+	i2c_trace_call(i2c_acquire)
+	pop $r13
+
+	cmp b32 $r13 I2C__MSG_RD08
+	bra ne #i2c_recv_not_rd08
+		mov $r5 0
+		i2c_trace_call(i2c_addr)
+		bra not $p1 #i2c_recv_done
+		extr $r5 $r12 I2C__MSG_DATA0_RD08_REG
+		i2c_trace_call(i2c_put_byte)
+		bra not $p1 #i2c_recv_done
+		mov $r5 1
+		i2c_trace_call(i2c_addr)
+		bra not $p1 #i2c_recv_done
+		i2c_trace_call(i2c_get_byte)
+		bra not $p1 #i2c_recv_done
+		ins $r11 $r5 I2C__MSG_DATA1_RD08_VAL
+		i2c_trace_call(i2c_stop)
+		mov b32 $r11 $r5
+		clear b32 $r7
+		bra #i2c_recv_done
+
+	i2c_recv_not_rd08:
+	cmp b32 $r13 I2C__MSG_WR08
+	bra ne #i2c_recv_not_wr08
+		mov $r5 0
+		call(i2c_addr)
+		bra not $p1 #i2c_recv_done
+		extr $r5 $r12 I2C__MSG_DATA0_WR08_REG
+		call(i2c_put_byte)
+		bra not $p1 #i2c_recv_done
+		mov $r5 0
+		call(i2c_addr)
+		bra not $p1 #i2c_recv_done
+		extr $r5 $r11 I2C__MSG_DATA1_WR08_VAL
+		call(i2c_put_byte)
+		bra not $p1 #i2c_recv_done
+		call(i2c_stop)
+		clear b32 $r7
+		extr $r5 $r12 I2C__MSG_DATA0_WR08_SYNC
+		bra nz #i2c_recv_done
+		bclr $flags $p2
+		bra #i2c_recv_done
+
+	i2c_recv_not_wr08:
+
+	i2c_recv_done:
+	extr $r14 $r12 I2C__MSG_DATA0_PORT
+	call(i2c_release)
+
+	pop $r14
+	pop $r13
+	bra not $p2 #i2c_recv_exit
+	mov b32 $r12 $r7
+	call(send)
+
+	i2c_recv_exit:
+	ret
+
+// description
+//
+// $r15 - current (i2c)
+// $r0  - zero
+i2c_init:
+	ret
+#endif