linux-stable.git/arch/mips/include, branch v5.16.3

MIPS: Octeon: Fix build errors using clang

2022-01-27T11:02:36+00:00

[ Upstream commit 95339b70677dc6f9a2d669c4716058e71b8dc1c7 ]

A large number of the following errors is reported when compiling
with clang:

  cvmx-bootinfo.h:326:3: error: adding 'int' to a string does not append to the string [-Werror,-Wstring-plus-int]
                  ENUM_BRD_TYPE_CASE(CVMX_BOARD_TYPE_NULL)
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  cvmx-bootinfo.h:321:20: note: expanded from macro 'ENUM_BRD_TYPE_CASE'
          case x: return(#x + 16);        /* Skip CVMX_BOARD_TYPE_ */
                         ~~~^~~~
  cvmx-bootinfo.h:326:3: note: use array indexing to silence this warning
  cvmx-bootinfo.h:321:20: note: expanded from macro 'ENUM_BRD_TYPE_CASE'
          case x: return(#x + 16);        /* Skip CVMX_BOARD_TYPE_ */
                          ^

Follow the prompts to use the address operator '&' to fix this error.

Signed-off-by: Tianjia Zhang 
Reviewed-by: Nathan Chancellor 
Reviewed-by: Philippe Mathieu-Daudé 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: Loongson64: Use three arguments for slti

2022-01-27T11:02:34+00:00

[ Upstream commit f2c6c22fa83ab2577619009057b3ebcb5305bb03 ]

LLVM's integrated assembler does not support 'slti , ':

:16:12: error: invalid operand for instruction
 slti $12, (0x6300 | 0x0008)
           ^
arch/mips/kernel/head.S:86:2: note: while in macro instantiation
 kernel_entry_setup # cpu specific setup
 ^
:16:12: error: invalid operand for instruction
 slti $12, (0x6300 | 0x0008)
           ^
arch/mips/kernel/head.S:150:2: note: while in macro instantiation
 smp_slave_setup
 ^

To increase compatibility with LLVM's integrated assembler, use the full
form of 'slti , , ', which matches the rest of
arch/mips/. This does not result in any change for GNU as.

Link: https://github.com/ClangBuiltLinux/linux/issues/1526
Reported-by: Ryutaroh Matsumoto 
Signed-off-by: Nathan Chancellor 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: fix local_{add,sub}_return on MIPS64

2022-01-27T11:02:10+00:00

[ Upstream commit 277c8cb3e8ac199f075bf9576ad286687ed17173 ]

Use "daddu/dsubu" for long int on MIPS64 instead of "addu/subu"

Fixes: 7232311ef14c ("local_t: mips extension")
Signed-off-by: Huang Pei 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: Only define pci_remap_iospace() for Ralink

2021-12-09T09:22:24+00:00

After commit 9f76779f2418 ("MIPS: implement architecture-specific
'pci_remap_iospace()'"), there exists the following warning on the
Loongson64 platform:

    loongson-pci 1a000000.pci:       IO 0x0018020000..0x001803ffff -> 0x0000020000
    loongson-pci 1a000000.pci:      MEM 0x0040000000..0x007fffffff -> 0x0040000000
    ------------[ cut here ]------------
    WARNING: CPU: 2 PID: 1 at arch/mips/pci/pci-generic.c:55 pci_remap_iospace+0x84/0x90
    resource start address is not zero
    ...
    Call Trace:
    [] show_stack+0x40/0x120
    [] dump_stack_lvl+0x58/0x74
    [] __warn+0xe0/0x110
    [] warn_slowpath_fmt+0xa4/0xd0
    [] pci_remap_iospace+0x84/0x90
    [] devm_pci_remap_iospace+0x5c/0xb8
    [] devm_of_pci_bridge_init+0x178/0x1f8
    [] devm_pci_alloc_host_bridge+0x78/0x98
    [] loongson_pci_probe+0x34/0x160
    [] platform_probe+0x6c/0xe0
    [] really_probe+0xbc/0x340
    [] __driver_probe_device+0x98/0x110
    [] driver_probe_device+0x50/0x118
    [] __driver_attach+0x80/0x118
    [] bus_for_each_dev+0x80/0xc8
    [] bus_add_driver+0x130/0x210
    [] driver_register+0x8c/0x150
    [] do_one_initcall+0x54/0x288
    [] kernel_init_freeable+0x27c/0x2e4
    [] kernel_init+0x2c/0x134
    [] ret_from_kernel_thread+0x14/0x1c
    ---[ end trace e4a0efe10aa5cce6 ]---
    loongson-pci 1a000000.pci: error -19: failed to map resource [io  0x20000-0x3ffff]

We can see that the resource start address is 0x0000020000, because
the ISA Bridge used the zero address which is defined in the dts file
arch/mips/boot/dts/loongson/ls7a-pch.dtsi:

    ISA Bridge: /bus@10000000/isa@18000000
    IO 0x0000000018000000..0x000000001801ffff  ->  0x0000000000000000

Based on the above analysis, the architecture-specific pci_remap_iospace()
is not suitable for Loongson64, we should only define pci_remap_iospace()
for Ralink on MIPS based on the commit background.

Fixes: 9f76779f2418 ("MIPS: implement architecture-specific 'pci_remap_iospace()'")
Suggested-by: Thomas Bogendoerfer 
Signed-off-by: Tiezhu Yang 
Tested-by: Sergio Paracuellos 
Acked-by: Sergio Paracuellos 
Signed-off-by: Thomas Bogendoerfer

Add linux/cacheflush.h

2021-11-17T15:36:15+00:00

Many architectures do not include asm-generic/cacheflush.h, so turn
the includes on their head and add linux/cacheflush.h which includes
asm/cacheflush.h.

Move the flush_dcache_folio() declaration from asm-generic/cacheflush.h
to linux/cacheflush.h and change linux/highmem.h to include
linux/cacheflush.h instead of asm/cacheflush.h so that all necessary
places will see flush_dcache_folio().

More functions should have their default implementations moved in the
future, but those are for follow-on patches.  This fixes csky, sparc and
sparc64 which were missed in the commit which added flush_dcache_folio().

Fixes: 08b0b0059bf1 ("mm: Add flush_dcache_folio()")
Suggested-by: Christoph Hellwig 
Signed-off-by: Matthew Wilcox (Oracle) 
Acked-by: Geert Uytterhoeven

Merge tag 'mips_5.16_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2021-11-13T17:11:33+00:00

Pull more MIPS updates from Thomas Bogendoerfer:

 - Config updates for BMIPS platform

 - Build fixes

 - Makefile cleanups

* tag 'mips_5.16_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mips: decompressor: do not copy source files while building
  MIPS: boot/compressed/: add __bswapdi2() to target for ZSTD decompression
  MIPS: fix duplicated slashes for Platform file path
  MIPS: fix *-pkg builds for loongson2ef platform
  PCI: brcmstb: Allow building for BMIPS_GENERIC
  MIPS: BMIPS: Enable PCI Kconfig
  MIPS: VDSO: remove -nostdlib compiler flag
  mips: BCM63XX: ensure that CPU_SUPPORTS_32BIT_KERNEL is set
  MIPS: Update bmips_stb_defconfig
  MIPS: Allow modules to set board_be_handler

MIPS: Allow modules to set board_be_handler

2021-11-09T15:07:26+00:00

After making the brcmstb_gisb driver modular with 707a4cdf86e5 ("bus:
brcmstb_gisb: Allow building as module") Guenter reported that mips
allmodconfig failed to link because board_be_handler was referenced.

Thomas indicated that if we were to continue making the brcmstb_gisb
driver modular for MIPS we would need to introduce a function that
allows setting the board_be_handler and export that function towards
modules.

This is what is being done here: board_be_handler is made static and is
now settable with a mips_set_be_handler() function which is exported.

Reported-by: Guenter Roeck 
Suggested-by: Thomas Bogendoerfer 
Fixes: 707a4cdf86e5 ("bus: brcmstb_gisb: Allow building as module")
Signed-off-by: Florian Fainelli 
Tested-by: Guenter Roeck 
Signed-off-by: Thomas Bogendoerfer

Merge tag 'mips_5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2021-11-05T15:13:19+00:00

Pull MIPS updates from Thomas Bogendoerfer:

 - added printing of CPU options for /proc/cpuinfo

 - removed support for Netlogic SOCs

 - fixes and cleanup

* tag 'mips_5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: Cobalt: Explain GT64111 early PCI fixup
  mips: fix HUGETLB function without THP enabled
  mips: cm: Convert to bitfield API to fix out-of-bounds access
  MIPS: Remove NETLOGIC support
  MIPS: kernel: proc: add CPU option reporting
  MIPS: kernel: proc: use seq_puts instead of seq_printf
  MIPS: kernel: proc: fix trivial style errors
  MIPS: Fix assembly error from MIPSr2 code used within MIPS_ISA_ARCH_LEVEL
  MIPS: octeon: Remove unused functions
  MIPS: Loongson64: Add of_node_put() before break
  bcm47xx: Replace printk(KERN_ALERT ... pci_devname(dev)) with pci_alert()
  bcm47xx: Get rid of redundant 'else'
  MIPS: sni: Fix the build
  MIPS: Avoid macro redefinitions
  MIPS: loongson64: Fix no screen display during boot-up
  MIPS: loongson64: make CPU_LOONGSON64 depends on MIPS_FP_SUPPORT

Merge tag 'staging-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

2021-11-04T14:56:22+00:00

Pull staging driver updates from Greg KH:
 "Here is the big set of staging driver updates and cleanups for
  5.16-rc1.

  Overall we ended up removing a lot of code this time, a bit over
  20,000 lines are now gone thanks to a lot of cleanup work by many
  developers.

  Nothing huge in here functionality wise, just loads of cleanups:

   - r8188eu driver major cleanups and removal of unused and dead code

   - wlan-ng minor cleanups

   - fbtft driver cleanups

   - most driver cleanups

   - rtl8* drivers cleanups

   - rts5208 driver cleanups

   - vt6655 driver cleanups

   - vc04_services drivers cleanups

   - wfx cleanups on the way to almost getting this merged out of
     staging (it's close!)

   - tiny mips changes needed for the mt7621 drivers, they have been
     acked by the respective subsystem maintainers to go through this
     tree.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (622 commits)
  staging: r8188eu: hal: remove goto statement and local variable
  staging: rtl8723bs: hal remove the assignment to itself
  staging: rtl8723bs: fix unmet dependency on CRYPTO for CRYPTO_LIB_ARC4
  staging: vchiq_core: get rid of typedef
  staging: fieldbus: anybus: reframe comment to avoid warning
  staging: r8188eu: fix missing unlock in rtw_resume()
  staging: r8188eu: core: remove the goto from rtw_IOL_accquire_xmit_frame
  staging: r8188eu: core: remove goto statement
  staging: vt6655: Rename `dwAL7230InitTable` array
  staging: vt6655: Rename `dwAL2230PowerTable` array
  staging: vt6655: Rename `dwAL7230InitTableAMode` array
  staging: vt6655: Rename `dwAL7230ChannelTable2` array
  staging: vt6655: Rename `dwAL7230ChannelTable1` array
  staging: vt6655: Rename `dwAL7230ChannelTable0` array
  staging: vt6655: Rename `dwAL2230ChannelTable1` array
  staging: vt6655: Rename `dwAL2230ChannelTable0` array
  staging: r8712u: fix control-message timeout
  staging: rtl8192u: fix control-message timeouts
  staging: mt7621-dts: add missing SPDX license to files
  staging: vchiq_core: fix quoted strings split across lines
  ...

Merge tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2021-11-02T13:20:58+00:00

Pull networking updates from Jakub Kicinski:
 "Core:

   - Remove socket skb caches

   - Add a SO_RESERVE_MEM socket op to forward allocate buffer space and
     avoid memory accounting overhead on each message sent

   - Introduce managed neighbor entries - added by control plane and
     resolved by the kernel for use in acceleration paths (BPF / XDP
     right now, HW offload users will benefit as well)

   - Make neighbor eviction on link down controllable by userspace to
     work around WiFi networks with bad roaming implementations

   - vrf: Rework interaction with netfilter/conntrack

   - fq_codel: implement L4S style ce_threshold_ect1 marking

   - sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()

  BPF:

   - Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
     as implemented in LLVM14

   - Introduce bpf_get_branch_snapshot() to capture Last Branch Records

   - Implement variadic trace_printk helper

   - Add a new Bloomfilter map type

   - Track <8-byte scalar spill and refill

   - Access hw timestamp through BPF's __sk_buff

   - Disallow unprivileged BPF by default

   - Document BPF licensing

  Netfilter:

   - Introduce egress hook for looking at raw outgoing packets

   - Allow matching on and modifying inner headers / payload data

   - Add NFT_META_IFTYPE to match on the interface type either from
     ingress or egress

  Protocols:

   - Multi-Path TCP:
      - increase default max additional subflows to 2
      - rework forward memory allocation
      - add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS

   - MCTP flow support allowing lower layer drivers to configure msg
     muxing as needed

   - Automatic Multicast Tunneling (AMT) driver based on RFC7450

   - HSR support the redbox supervision frames (IEC-62439-3:2018)

   - Support for the ip6ip6 encapsulation of IOAM

   - Netlink interface for CAN-FD's Transmitter Delay Compensation

   - Support SMC-Rv2 eliminating the current same-subnet restriction, by
     exploiting the UDP encapsulation feature of RoCE adapters

   - TLS: add SM4 GCM/CCM crypto support

   - Bluetooth: initial support for link quality and audio/codec offload

  Driver APIs:

   - Add a batched interface for RX buffer allocation in AF_XDP buffer
     pool

   - ethtool: Add ability to control transceiver modules' power mode

   - phy: Introduce supported interfaces bitmap to express MAC
     capabilities and simplify PHY code

   - Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks

  New drivers:

   - WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)

   - Ethernet driver for ASIX AX88796C SPI device (x88796c)

  Drivers:

   - Broadcom PHYs
      - support 72165, 7712 16nm PHYs
      - support IDDQ-SR for additional power savings

   - PHY support for QCA8081, QCA9561 PHYs

   - NXP DPAA2: support for IRQ coalescing

   - NXP Ethernet (enetc): support for software TCP segmentation

   - Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
     Gigabit-capable IP found on RZ/G2L SoC

   - Intel 100G Ethernet
      - support for eswitch offload of TC/OvS flow API, including
        offload of GRE, VxLAN, Geneve tunneling
      - support application device queues - ability to assign Rx and Tx
        queues to application threads
      - PTP and PPS (pulse-per-second) extensions

   - Broadcom Ethernet (bnxt)
      - devlink health reporting and device reload extensions

   - Mellanox Ethernet (mlx5)
      - offload macvlan interfaces
      - support HW offload of TC rules involving OVS internal ports
      - support HW-GRO and header/data split
      - support application device queues

   - Marvell OcteonTx2:
      - add XDP support for PF
      - add PTP support for VF

   - Qualcomm Ethernet switch (qca8k): support for QCA8328

   - Realtek Ethernet DSA switch (rtl8366rb)
      - support bridge offload
      - support STP, fast aging, disabling address learning
      - support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch

   - Mellanox Ethernet/IB switch (mlxsw)
      - multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
      - offload root TBF qdisc as port shaper
      - support multiple routing interface MAC address prefixes
      - support for IP-in-IP with IPv6 underlay

   - MediaTek WiFi (mt76)
      - mt7921 - ASPM, 6GHz, SDIO and testmode support
      - mt7915 - LED and TWT support

   - Qualcomm WiFi (ath11k)
      - include channel rx and tx time in survey dump statistics
      - support for 80P80 and 160 MHz bandwidths
      - support channel 2 in 6 GHz band
      - spectral scan support for QCN9074
      - support for rx decapsulation offload (data frames in 802.3
        format)

   - Qualcomm phone SoC WiFi (wcn36xx)
      - enable Idle Mode Power Save (IMPS) to reduce power consumption
        during idle

   - Bluetooth driver support for MediaTek MT7922 and MT7921

   - Enable support for AOSP Bluetooth extension in Qualcomm WCN399x and
     Realtek 8822C/8852A

   - Microsoft vNIC driver (mana)
      - support hibernation and kexec

   - Google vNIC driver (gve)
      - support for jumbo frames
      - implement Rx page reuse

  Refactor:

   - Make all writes to netdev->dev_addr go thru helpers, so that we can
     add this address to the address rbtree and handle the updates

   - Various TCP cleanups and optimizations including improvements to
     CPU cache use

   - Simplify the gnet_stats, Qdisc stats' handling and remove
     qdisc->running sequence counter

   - Driver changes and API updates to address devlink locking
     deficiencies"

* tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2122 commits)
  Revert "net: avoid double accounting for pure zerocopy skbs"
  selftests: net: add arp_ndisc_evict_nocarrier
  net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter
  net: arp: introduce arp_evict_nocarrier sysctl parameter
  libbpf: Deprecate AF_XDP support
  kbuild: Unify options for BTF generation for vmlinux and modules
  selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
  bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
  bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
  net: vmxnet3: remove multiple false checks in vmxnet3_ethtool.c
  net: avoid double accounting for pure zerocopy skbs
  tcp: rename sk_wmem_free_skb
  netdevsim: fix uninit value in nsim_drv_configure_vfs()
  selftests/bpf: Fix also no-alu32 strobemeta selftest
  bpf: Add missing map_delete_elem method to bloom filter map
  selftests/bpf: Add bloom map success test for userspace calls
  bpf: Add alignment padding for "map_extra" + consolidate holes
  bpf: Bloom filter map naming fixups
  selftests/bpf: Add test cases for struct_ops prog
  bpf: Add dummy BPF STRUCT_OPS for test purpose
  ...