a8a0447e0d
https://source.android.com/docs/security/bulletin/2023-06-01 * tag 'ASB-2023-06-05_11-5.4' of https://android.googlesource.com/kernel/common: UPSTREAM: io_uring: have io_kill_timeout() honor the request references UPSTREAM: io_uring: don't drop completion lock before timer is fully initialized UPSTREAM: io_uring: always grab lock in io_cancel_async_work() UPSTREAM: net: cdc_ncm: Deal with too low values of dwNtbOutMaxSize UPSTREAM: cdc_ncm: Fix the build warning UPSTREAM: cdc_ncm: Implement the 32-bit version of NCM Transfer Block UPSTREAM: ext4: avoid a potential slab-out-of-bounds in ext4_group_desc_csum UPSTREAM: ext4: fix invalid free tracking in ext4_xattr_move_to_block() Revert "Revert "mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse"" FROMLIST: binder: fix UAF caused by faulty buffer cleanup Linux 5.4.242 ASN.1: Fix check for strdup() success iio: adc: at91-sama5d2_adc: fix an error code in at91_adc_allocate_trigger() pwm: meson: Explicitly set .polarity in .get_state() xfs: fix forkoff miscalculation related to XFS_LITINO(mp) sctp: Call inet6_destroy_sock() via sk->sk_destruct(). dccp: Call inet6_destroy_sock() via sk->sk_destruct(). inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy(). tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct(). udp: Call inet6_destroy_sock() in setsockopt(IPV6_ADDRFORM). ext4: fix use-after-free in ext4_xattr_set_entry ext4: remove duplicate definition of ext4_xattr_ibody_inline_set() Revert "ext4: fix use-after-free in ext4_xattr_set_entry" x86/purgatory: Don't generate debug info for purgatory.ro MIPS: Define RUNTIME_DISCARD_EXIT in LD script mmc: sdhci_am654: Set HIGH_SPEED_ENA for SDR12 and SDR25 memstick: fix memory leak if card device is never registered nilfs2: initialize unused bytes in segment summary blocks iio: light: tsl2772: fix reading proximity-diodes from device tree xen/netback: use same error messages for same errors nvme-tcp: fix a possible UAF when failing to allocate an io queue s390/ptrace: fix PTRACE_GET_LAST_BREAK error handling net: dsa: b53: mmap: add phy ops scsi: core: Improve scsi_vpd_inquiry() checks scsi: megaraid_sas: Fix fw_crash_buffer_show() selftests: sigaltstack: fix -Wuninitialized Input: i8042 - add quirk for Fujitsu Lifebook A574/H f2fs: Fix f2fs_truncate_partial_nodes ftrace event e1000e: Disable TSO on i219-LM card to increase speed bpf: Fix incorrect verifier pruning due to missing register precision taints mlxfw: fix null-ptr-deref in mlxfw_mfa2_tlv_next() i40e: fix i40e_setup_misc_vector() error handling i40e: fix accessing vsi->active_filters without holding lock netfilter: nf_tables: fix ifdef to also consider nf_tables=m virtio_net: bugfix overflow inside xdp_linearize_page() net: sched: sch_qfq: prevent slab-out-of-bounds in qfq_activate_agg regulator: fan53555: Explicitly include bits header netfilter: br_netfilter: fix recent physdev match breakage arm64: dts: meson-g12-common: specify full DMC range ARM: dts: rockchip: fix a typo error for rk3288 spdif node Linux 5.4.241 xfs: force log and push AIL to clear pinned inodes when aborting mount xfs: don't reuse busy extents on extent trim xfs: consider shutdown in bmapbt cursor delete assert xfs: shut down the filesystem if we screw up quota reservation xfs: report corruption only as a regular error xfs: set inode size after creating symlink xfs: fix up non-directory creation in SGID directories xfs: remove the di_version field from struct icdinode xfs: simplify a check in xfs_ioctl_setattr_check_cowextsize xfs: simplify di_flags2 inheritance in xfs_ialloc xfs: only check the superblock version for dinode size calculation xfs: add a new xfs_sb_version_has_v3inode helper xfs: remove the kuid/kgid conversion wrappers xfs: remove the icdinode di_uid/di_gid members xfs: ensure that the inode uid/gid match values match the icdinode ones xfs: merge the projid fields in struct xfs_icdinode xfs: show the proper user quota options coresight-etm4: Fix for() loop drvdata->nr_addr_cmp range bug watchdog: sbsa_wdog: Make sure the timeout programming is within the limits i2c: ocores: generate stop condition after timeout in polling mode ubi: Fix deadlock caused by recursively holding work_sem mtd: ubi: wl: Fix a couple of kernel-doc issues ubi: Fix failure attaching when vid_hdr offset equals to (sub)page size asymmetric_keys: log on fatal failures in PE/pkcs7 verify_pefile: relax wrapper length check drm: panel-orientation-quirks: Add quirk for Lenovo Yoga Book X90F efi: sysfb_efi: Add quirk for Lenovo Yoga Book X91F/L i2c: imx-lpi2c: clean rx/tx buffers upon new message power: supply: cros_usbpd: reclassify "default case!" as debug net: macb: fix a memory corruption in extended buffer descriptor mode udp6: fix potential access to stale information RDMA/core: Fix GID entry ref leak when create_ah fails sctp: fix a potential overflow in sctp_ifwdtsn_skip qlcnic: check pci_reset_function result niu: Fix missing unwind goto in niu_alloc_channels() 9p/xen : Fix use after free bug in xen_9pfs_front_remove due to race condition mtd: rawnand: stm32_fmc2: remove unsupported EDO mode mtd: rawnand: meson: fix bitmask for length in command word mtdblock: tolerate corrected bit-flips btrfs: fix fast csum implementation detection btrfs: print checksum type and implementation at mount time Bluetooth: Fix race condition in hidp_session_thread Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} ALSA: hda/sigmatel: fix S/PDIF out on Intel D*45* motherboards ALSA: firewire-tascam: add missing unwind goto in snd_tscm_stream_start_duplex() ALSA: i2c/cs8427: fix iec958 mixer control deactivation ALSA: hda/sigmatel: add pin overrides for Intel DP45SG motherboard ALSA: emu10k1: fix capture interrupt handler unlinking Revert "pinctrl: amd: Disable and mask interrupts on resume" irqdomain: Fix mapping-creation race irqdomain: Refactor __irq_domain_alloc_irqs() irqdomain: Look for existing mapping only once mm/swap: fix swap_info_struct race between swapoff and get_swap_pages() ring-buffer: Fix race while reader and writer are on the same page drm/panfrost: Fix the panfrost_mmu_map_fault_addr() error path net_sched: prevent NULL dereference if default qdisc setup failed tracing: Free error logs of tracing instances can: j1939: j1939_tp_tx_dat_new(): fix out-of-bounds memory access ftrace: Mark get_lock_parent_ip() __always_inline perf/core: Fix the same task check in perf_event_set_output ALSA: hda/realtek: Add quirk for Clevo X370SNW nilfs2: fix sysfs interface lifetime nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() tty: serial: fsl_lpuart: avoid checking for transfer complete when UARTCTRL_SBK is asserted in lpuart32_tx_empty tty: serial: sh-sci: Fix Rx on RZ/G2L SCI tty: serial: sh-sci: Fix transmit end interrupt handler iio: dac: cio-dac: Fix max DAC write value check for 12-bit iio: adc: ti-ads7950: Set `can_sleep` flag for GPIO chip USB: serial: option: add Quectel RM500U-CN modem USB: serial: option: add Telit FE990 compositions usb: typec: altmodes/displayport: Fix configure initial pin assignment USB: serial: cp210x: add Silicon Labs IFS-USB-DATACABLE IDs xhci: also avoid the XHCI_ZERO_64B_REGS quirk with a passthrough iommu NFSD: callback request does not use correct credential for AUTH_SYS sunrpc: only free unix grouplist after RCU settles gpio: davinci: Add irq chip flag to skip set wake ipv6: Fix an uninit variable access bug in __ip6_make_skb() sctp: check send stream number after wait_for_sndbuf net: don't let netpoll invoke NAPI if in xmit context icmp: guard against too small mtu wifi: mac80211: fix invalid drv_sta_pre_rcu_remove calls for non-uploaded sta pwm: sprd: Explicitly set .polarity in .get_state() pwm: cros-ec: Explicitly set .polarity in .get_state() pinctrl: amd: Disable and mask interrupts on resume pinctrl: amd: disable and mask interrupts on probe pinctrl: amd: Use irqchip template smb3: fix problem with null cifs super block with previous patch treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD() Revert "treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()" cgroup/cpuset: Wake up cpuset_attach_wq tasks in cpuset_cancel_attach() x86/PCI: Add quirk for AMD XHCI controller that loses MSI-X state in D3hot scsi: ses: Handle enclosure with just a primary component gracefully Linux 5.4.240 gfs2: Always check inode size of inline inodes firmware: arm_scmi: Fix device node validation for mailbox transport net: sched: fix race condition in qdisc_graft() net_sched: add __rcu annotation to netdev->qdisc ext4: fix kernel BUG in 'ext4_write_inline_data_end()' btrfs: scan device in non-exclusive mode s390/uaccess: add missing earlyclobber annotations to __clear_user() drm/etnaviv: fix reference leak when mmaping imported buffer ALSA: usb-audio: Fix regression on detection of Roland VS-100 ALSA: hda/conexant: Partial revert of a quirk for Lenovo NFSv4: Fix hangs when recovering open state after a server reboot pinctrl: at91-pio4: fix domain name assignment xen/netback: don't do grant copy across page boundary Input: goodix - add Lenovo Yoga Book X90F to nine_bytes_report DMI table cifs: fix DFS traversal oops without CONFIG_CIFS_DFS_UPCALL cifs: prevent infinite recursion in CIFSGetDFSRefer() Input: focaltech - use explicitly signed char type Input: alps - fix compatibility with -funsigned-char pinctrl: ocelot: Fix alt mode for ocelot net: mvneta: make tx buffer array agnostic net: dsa: mv88e6xxx: Enable IGMP snooping on user ports only bnxt_en: Fix typo in PCI id to device description string mapping i40e: fix registers dump after run ethtool adapter self test s390/vfio-ap: fix memory leak in vfio_ap device driver can: bcm: bcm_tx_setup(): fix KMSAN uninit-value in vfs_write net/net_failover: fix txq exceeding warning regulator: Handle deferred clk regulator: fix spelling mistake "Cant" -> "Can't" ptp_qoriq: fix memory leak in probe() scsi: megaraid_sas: Fix crash after a double completion mtd: rawnand: meson: invalidate cache on polling ECC bit mips: bmips: BCM6358: disable RAC flush for TP1 dma-mapping: drop the dev argument to arch_sync_dma_for_* ca8210: Fix unsigned mac_len comparison with zero in ca8210_skb_tx() fbdev: au1200fb: Fix potential divide by zero fbdev: lxfb: Fix potential divide by zero fbdev: intelfb: Fix potential divide by zero fbdev: nvidia: Fix potential divide by zero sched_getaffinity: don't assume 'cpumask_size()' is fully initialized fbdev: tgafb: Fix potential divide by zero ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set() ALSA: asihpi: check pao in control_message() md: avoid signed overflow in slot_store() bus: imx-weim: fix branch condition evaluates to a garbage value fsverity: don't drop pagecache at end of FS_IOC_ENABLE_VERITY ocfs2: fix data corruption after failed write tun: avoid double free in tun_free_netdev sched/fair: Sanitize vruntime of entity being migrated sched/fair: sanitize vruntime of entity being placed dm crypt: add cond_resched() to dmcrypt_write() dm stats: check for and propagate alloc_percpu failure i2c: xgene-slimpro: Fix out-of-bounds bug in xgene_slimpro_i2c_xfer() nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy() wifi: mac80211: fix qos on mesh interfaces usb: chipidea: core: fix possible concurrent when switch role usb: chipdea: core: fix return -EINVAL if request role is the same with current role usb: cdns3: Fix issue with using incorrect PCI device function dm thin: fix deadlock when swapping to thin device igb: revert rtnl_lock() that causes deadlock fsverity: Remove WQ_UNBOUND from fsverity read workqueue usb: gadget: u_audio: don't let userspace block driver unbind scsi: core: Add BLIST_SKIP_VPD_PAGES for SKhynix H28U74301AMR cifs: empty interface list when server doesn't support query interfaces sh: sanitize the flags on sigreturn net: usb: qmi_wwan: add Telit 0x1080 composition net: usb: cdc_mbim: avoid altsetting toggling for Telit FE990 scsi: lpfc: Avoid usage of list iterator variable after loop scsi: ufs: core: Add soft dependency on governor_simpleondemand scsi: target: iscsi: Fix an error message in iscsi_check_key() selftests/bpf: check that modifier resolves after pointer m68k: Only force 030 bus error if PC not in exception table ca8210: fix mac_len negative array access riscv: Bump COMMAND_LINE_SIZE value to 1024 thunderbolt: Use const qualifier for `ring_interrupt_index` uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS583Gen 2 scsi: qla2xxx: Perform lockless command completion in abort path hwmon (it87): Fix voltage scaling for chips with 10.9mV ADCs platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work Bluetooth: btqcomsmd: Fix command timeout after setting BD address net: mdio: thunder: Add missing fwnode_handle_put() hvc/xen: prevent concurrent accesses to the shared ring nvme-tcp: fix nvme_tcp_term_pdu to match spec net/sonic: use dma_mapping_error() for error check erspan: do not use skb_mac_header() in ndo_start_xmit() atm: idt77252: fix kmemleak when rmmod idt77252 net/mlx5: Read the TC mapping of all priorities on ETS query bpf: Adjust insufficient default bpf_jit_limit keys: Do not cache key in task struct if key is requested from kernel thread net/ps3_gelic_net: Use dma_mapping_error net/ps3_gelic_net: Fix RX sk_buff length net: qcom/emac: Fix use after free bug in emac_remove due to race condition xirc2ps_cs: Fix use after free bug in xirc2ps_detach qed/qed_sriov: guard against NULL derefs from qed_iov_get_vf_info net: usb: smsc95xx: Limit packet length to skb->len scsi: scsi_dh_alua: Fix memleak for 'qdata' in alua_activate() i2c: imx-lpi2c: check only for enabled interrupt flags igbvf: Regard vf reset nack as success intel/igbvf: free irq on the error path in igbvf_request_msix() iavf: fix non-tunneled IPv6 UDP packet type and hashing iavf: fix inverted Rx hash condition leading to disabled hash power: supply: da9150: Fix use after free bug in da9150_charger_remove due to race condition net: tls: fix possible race condition between do_tls_getsockopt_conf() and do_tls_setsockopt_conf() Linux 5.4.239 selftests: Fix the executable permissions for fib_tests.sh BACKPORT: mac80211_hwsim: notify wmediumd of used MAC addresses FROMGIT: mac80211_hwsim: add concurrent channels scanning support over virtio Revert "HID: core: Provide new max_buffer_size attribute to over-ride the default" Revert "HID: uhid: Over-ride the default maximum data buffer value with our own" Linux 5.4.238 HID: uhid: Over-ride the default maximum data buffer value with our own HID: core: Provide new max_buffer_size attribute to over-ride the default PCI: Unify delay handling for reset and resume s390/ipl: add missing intersection check to ipl_report handling serial: 8250_em: Fix UART port type drm/i915: Don't use stolen memory for ring buffers with LLC x86/mm: Fix use of uninitialized buffer in sme_enable() fbdev: stifb: Provide valid pixelclock and add fb_check_var() checks ftrace: Fix invalid address access in lookup_rec() when index is 0 KVM: nVMX: add missing consistency checks for CR0 and CR4 tracing: Make tracepoint lockdep check actually test something tracing: Check field value in hist_field_name() interconnect: fix mem leak when freeing nodes tty: serial: fsl_lpuart: skip waiting for transmission complete when UARTCTRL_SBK is asserted ext4: fix possible double unlock when moving a directory sh: intc: Avoid spurious sizeof-pointer-div warning drm/amdkfd: Fix an illegal memory access ext4: fix task hung in ext4_xattr_delete_inode ext4: fail ext4_iget if special inode unallocated jffs2: correct logic when creating a hole in jffs2_write_begin mmc: atmel-mci: fix race between stop command and start of next command media: m5mols: fix off-by-one loop termination error hwmon: (ina3221) return prober error code hwmon: (xgene) Fix use after free bug in xgene_hwmon_remove due to race condition hwmon: (adt7475) Fix masking of hysteresis registers hwmon: (adt7475) Display smoothing attributes in correct order ethernet: sun: add check for the mdesc_grab() net/iucv: Fix size of interrupt data net: usb: smsc75xx: Move packet length check to prevent kernel panic in skb_pull ipv4: Fix incorrect table ID in IOCTL path block: sunvdc: add check for mdesc_grab() returning NULL nvmet: avoid potential UAF in nvmet_req_complete() net: usb: smsc75xx: Limit packet length to skb->len nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition net: phy: smsc: bail out in lan87xx_read_status if genphy_read_status fails net: tunnels: annotate lockless accesses to dev->needed_headroom qed/qed_dev: guard against a possible division by zero i40e: Fix kernel crash during reboot when adapter is in recovery mode ipvlan: Make skb->skb_iif track skb->dev for l3s mode nfc: pn533: initialize struct pn533_out_arg properly tcp: tcp_make_synack() can be called from process context scsi: core: Fix a procfs host directory removal regression scsi: core: Fix a comment in function scsi_host_dev_release() netfilter: nft_redir: correct value of inet type `.maxattrs` ALSA: hda: Match only Intel devices with CONTROLLER_IN_GPU() ALSA: hda: Add Intel DG2 PCI ID and HDMI codec vid ALSA: hda: Add Alderlake-S PCI ID and HDMI codec vid ALSA: hda - controller is in GPU on the DG1 ALSA: hda - add Intel DG1 PCI and HDMI ids scsi: mpt3sas: Fix NULL pointer access in mpt3sas_transport_port_add() docs: Correct missing "d_" prefix for dentry_operations member d_weak_revalidate clk: HI655X: select REGMAP instead of depending on it drm/meson: fix 1px pink line on GXM when scaling video overlay cifs: Move the in_send statistic to __smb_send_rqst() drm/panfrost: Don't sync rpm suspension after mmu flushing xfrm: Allow transport-mode states with AF_UNSPEC selector ext4: fix cgroup writeback accounting with fs-layer encryption ANDROID: preserve CRC for __irq_domain_add() Revert "drm/exynos: Don't reset bridge->next" Revert "drm/bridge: Rename bridge helpers targeting a bridge chain" Revert "drm/bridge: Introduce drm_bridge_get_next_bridge()" Revert "drm: Initialize struct drm_crtc_state.no_vblank from device settings" Revert "drm/msm/mdp5: Add check for kzalloc" Linux 5.4.237 s390/dasd: add missing discipline function UML: define RUNTIME_DISCARD_EXIT sh: define RUNTIME_DISCARD_EXIT s390: define RUNTIME_DISCARD_EXIT to fix link error with GNU ld < 2.36 powerpc/vmlinux.lds: Don't discard .rela* for relocatable builds powerpc/vmlinux.lds: Define RUNTIME_DISCARD_EXIT arch: fix broken BuildID for arm64 and riscv x86, vmlinux.lds: Add RUNTIME_DISCARD_EXIT to generic DISCARDS drm/i915: Don't use BAR mappings for ring buffers with LLC ipmi:watchdog: Set panic count to proper value on a panic ipmi/watchdog: replace atomic_add() and atomic_sub() media: ov5640: Fix analogue gain control PCI: Add SolidRun vendor ID macintosh: windfarm: Use unsigned type for 1-bit bitfields alpha: fix R_ALPHA_LITERAL reloc for large modules MIPS: Fix a compilation issue ext4: Fix deadlock during directory rename riscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode net/smc: fix fallback failed while sendmsg with fastopen scsi: megaraid_sas: Update max supported LD IDs to 240 btf: fix resolving BTF_KIND_VAR after ARRAY, STRUCT, UNION, PTR netfilter: tproxy: fix deadlock due to missing BH disable bnxt_en: Avoid order-5 memory allocation for TPA data net: caif: Fix use-after-free in cfusbl_device_notify() net: lan78xx: fix accessing the LAN7800's internal phy specific registers from the MAC driver net: usb: lan78xx: Remove lots of set but unused 'ret' variables selftests: nft_nat: ensuring the listening side is up before starting the client ila: do not generate empty messages in ila_xlat_nl_cmd_get_mapping() nfc: fdp: add null check of devm_kmalloc_array in fdp_nci_i2c_read_device_properties drm/msm/a5xx: fix setting of the CP_PREEMPT_ENABLE_LOCAL register ext4: Fix possible corruption when moving a directory scsi: core: Remove the /proc/scsi/${proc_name} directory earlier cifs: Fix uninitialized memory read in smb3_qfs_tcon() SMB3: Backup intent flag missing from some more ops iommu/vt-d: Fix PASID directory pointer coherency irqdomain: Fix domain registration race irqdomain: Change the type of 'size' in __irq_domain_add() to be consistent ipmi:ssif: Add a timer between request retries ipmi:ssif: Increase the message retry time ipmi:ssif: Remove rtc_us_timer ipmi:ssif: resend_msg() cannot fail ipmi:ssif: make ssif_i2c_send() void iommu/amd: Add a length limitation for the ivrs_acpihid command-line parameter iommu/amd: Fix ill-formed ivrs_ioapic, ivrs_hpet and ivrs_acpihid options iommu/amd: Add PCI segment support for ivrs_[ioapic/hpet/acpihid] commands nfc: change order inside nfc_se_io error path ext4: zero i_disksize when initializing the bootloader inode ext4: fix WARNING in ext4_update_inline_data ext4: move where set the MAY_INLINE_DATA flag is set ext4: fix another off-by-one fsmap error on 1k block filesystems ext4: fix RENAME_WHITEOUT handling for inline directories drm/connector: print max_requested_bpc in state debugfs x86/CPU/AMD: Disable XSAVES on AMD family 0x17 fs: prevent out-of-bounds array speculation when closing a file descriptor Linux 5.4.236 staging: rtl8192e: Remove call_usermodehelper starting RadioPower.sh staging: rtl8192e: Remove function ..dm_check_ac_dc_power calling a script wifi: cfg80211: Partial revert "wifi: cfg80211: Fix use after free for wext" Linux 5.4.235 dt-bindings: rtc: sun6i-a31-rtc: Loosen the requirements on the clocks media: uvcvideo: Fix race condition with usb_kill_urb media: uvcvideo: Provide sync and async uvc_ctrl_status_event tcp: Fix listen() regression in 5.4.229. Bluetooth: hci_sock: purge socket queues in the destruct() callback x86/resctl: fix scheduler confusion with 'current' x86/resctrl: Apply READ_ONCE/WRITE_ONCE to task_struct.{rmid,closid} net: tls: avoid hanging tasks on the tx_lock phy: rockchip-typec: Fix unsigned comparison with less than zero PCI: Add ACS quirk for Wangxun NICs kernel/fail_function: fix memory leak with using debugfs_lookup() usb: uvc: Enumerate valid values for color matching USB: ene_usb6250: Allocate enough memory for full object usb: host: xhci: mvebu: Iterate over array indexes instead of using pointer math iio: accel: mma9551_core: Prevent uninitialized variable in mma9551_read_config_word() iio: accel: mma9551_core: Prevent uninitialized variable in mma9551_read_status_word() tools/iio/iio_utils:fix memory leak mei: bus-fixup:upon error print return values of send and receive tty: serial: fsl_lpuart: disable the CTS when send break signal tty: fix out-of-bounds access in tty_driver_lookup_tty() staging: emxx_udc: Add checks for dma_alloc_coherent() media: uvcvideo: Silence memcpy() run-time false positive warnings media: uvcvideo: Quirk for autosuspend in Logitech B910 and C910 media: uvcvideo: Handle errors from calls to usb_string media: uvcvideo: Handle cameras with invalid descriptors mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak firmware/efi sysfb_efi: Add quirk for Lenovo IdeaPad Duet 3 tracing: Add NULL checks for buffer in ring_buffer_free_read_page() thermal: intel: BXT_PMIC: select REGMAP instead of depending on it thermal: intel: quark_dts: fix error pointer dereference scsi: ipr: Work around fortify-string warning rtc: sun6i: Always export the internal oscillator rtc: sun6i: Make external 32k oscillator optional vc_screen: modify vcs_size() handling in vcs_read() tcp: tcp_check_req() can be called from process context ARM: dts: spear320-hmi: correct STMPE GPIO compatible net/sched: act_sample: fix action bind logic nfc: fix memory leak of se_io context in nfc_genl_se_io net/mlx5: Geneve, Fix handling of Geneve object id as error code 9p/rdma: unmap receive dma buffer in rdma_request()/post_recv() 9p/xen: fix connection sequence 9p/xen: fix version parsing net: fix __dev_kfree_skb_any() vs drop monitor sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop ipv6: Add lwtunnel encap size of all siblings in nexthop calculation netfilter: ctnetlink: fix possible refcount leak in ctnetlink_create_conntrack() watchdog: pcwd_usb: Fix attempting to access uninitialized memory watchdog: Fix kmemleak in watchdog_cdev_register watchdog: at91sam9_wdt: use devm_request_irq to avoid missing free_irq() in error path x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show() ubifs: ubifs_writepage: Mark page dirty after writing inode failed ubifs: dirty_cow_znode: Fix memleak in error handling path ubifs: Re-statistic cleaned znode count if commit failed ubi: Fix possible null-ptr-deref in ubi_free_volume() ubifs: Fix memory leak in alloc_wbufs() ubi: Fix unreferenced object reported by kmemleak in ubi_resize_volume() ubi: Fix use-after-free when volume resizing failed ubifs: Reserve one leb for each journal head while doing budget ubifs: do_rename: Fix wrong space budget when target inode's nlink > 1 ubifs: Fix wrong dirty space budget for dirty inode ubifs: Rectify space budget for ubifs_xrename() ubifs: Rectify space budget for ubifs_symlink() if symlink is encrypted ubifs: Fix build errors as symbol undefined ubi: ensure that VID header offset + VID header size <= alloc, size um: vector: Fix memory leak in vector_config fs: f2fs: initialize fsdata in pagecache_write() f2fs: use memcpy_{to,from}_page() where possible pwm: stm32-lp: fix the check on arr and cmp registers update pwm: sifive: Always let the first pwm_apply_state succeed pwm: sifive: Reduce time the controller lock is held fs/jfs: fix shift exponent db_agl2size negative net/sched: Retire tcindex classifier kbuild: Port silent mode detection to future gnu make. wifi: ath9k: use proper statements in conditionals drm/radeon: Fix eDP for single-display iMac11,2 drm/i915/quirks: Add inverted backlight quirk for HP 14-r206nv PCI: Avoid FLR for AMD FCH AHCI adapters PCI: hotplug: Allow marking devices as disconnected during bind/unbind PCI/PM: Observe reset delay irrespective of bridge_d3 scsi: ses: Fix slab-out-of-bounds in ses_intf_remove() scsi: ses: Fix possible desc_ptr out-of-bounds accesses scsi: ses: Fix possible addl_desc_ptr out-of-bounds accesses scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() scsi: ses: Don't attach if enclosure has no components scsi: qla2xxx: Fix erroneous link down scsi: qla2xxx: Fix DMA-API call trace on NVMe LS requests scsi: qla2xxx: Fix link failure in NPIV environment ktest.pl: Add RUN_TIMEOUT option with default unlimited ktest.pl: Fix missing "end_monitor" when machine check fails ktest.pl: Give back console on Ctrt^C on monitor mm/thp: check and bail out if page in deferred queue already mm: memcontrol: deprecate charge moving media: ipu3-cio2: Fix PM runtime usage_count in driver unbind mips: fix syscall_get_nr alpha: fix FEN fault handling rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails ARM: dts: exynos: correct TMU phandle in Odroid XU ARM: dts: exynos: correct TMU phandle in Exynos4 dm flakey: don't corrupt the zero page dm flakey: fix logic when corrupting a bio thermal: intel: powerclamp: Fix cur_state for multi package system wifi: cfg80211: Fix use after free for wext wifi: rtl8xxxu: Use a longer retry limit of 48 ext4: refuse to create ea block when umounted ext4: optimize ea_inode block expansion ALSA: hda/realtek: Add quirk for HP EliteDesk 800 G6 Tower PC ALSA: ice1712: Do not left ice->gpio_mutex locked in aureon_add_controls() irqdomain: Drop bogus fwspec-mapping error handling irqdomain: Fix disassociation race irqdomain: Fix association race ima: Align ima_file_mmap() parameters with mmap_file LSM hook Documentation/hw-vuln: Document the interaction between IBRS and STIBP x86/speculation: Allow enabling STIBP with legacy IBRS x86/microcode/AMD: Fix mixed steppings support x86/microcode/AMD: Add a @cpu parameter to the reloading functions x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range x86/kprobes: Fix __recover_optprobed_insn check optimizing logic x86/reboot: Disable SVM, not just VMX, when stopping CPUs x86/reboot: Disable virtualization in an emergency if SVM is supported x86/crash: Disable virt in core NMI crash handler to avoid double shootdown x86/virt: Force GIF=1 prior to disabling SVM (for reboot flows) KVM: s390: disable migration mode when dirty tracking is disabled KVM: Destroy target device if coalesced MMIO unregistration fails udf: Fix file corruption when appending just after end of preallocated extent udf: Detect system inodes linked into directory hierarchy udf: Preserve link count of system files udf: Do not update file length for failed writes to inline files udf: Do not bother merging very long extents udf: Truncate added extents on failed expansion ocfs2: fix non-auto defrag path not working issue ocfs2: fix defrag path triggering jbd2 ASSERT f2fs: fix cgroup writeback accounting with fs-layer encryption f2fs: fix information leak in f2fs_move_inline_dirents() fs: hfsplus: fix UAF issue in hfsplus_put_super hfs: fix missing hfs_bnode_get() in __hfs_bnode_create ARM: dts: exynos: correct HDMI phy compatible in Exynos4 s390/kprobes: fix current_kprobe never cleared after kprobes reenter s390/kprobes: fix irq mask clobbering on kprobe reenter from post_handler s390: discard .interp section ipmi_ssif: Rename idle state and check rtc: pm8xxx: fix set-alarm race firmware: coreboot: framebuffer: Ignore reserved pixel color bits wifi: rtl8xxxu: fixing transmisison failure for rtl8192eu nfsd: zero out pointers after putting nfsd_files on COPY setup error dm cache: add cond_resched() to various workqueue loops dm thin: add cond_resched() to various workqueue loops drm: panel-orientation-quirks: Add quirk for Lenovo IdeaPad Duet 3 10IGL5 pinctrl: at91: use devm_kasprintf() to avoid potential leaks hwmon: (coretemp) Simplify platform device handling regulator: s5m8767: Bounds check id indexing into arrays regulator: max77802: Bounds check regulator id against opmode ASoC: kirkwood: Iterate over array indexes instead of using pointer math docs/scripts/gdb: add necessary make scripts_gdb step drm/msm/dsi: Add missing check for alloc_ordered_workqueue drm/radeon: free iio for atombios when driver shutdown HID: Add Mapping for System Microphone Mute drm/omap: dsi: Fix excessive stack usage drm/amd/display: Fix potential null-deref in dm_resume uaccess: Add minimum bounds check on kernel buffer size coda: Avoid partial allocation of sig_inputArgs net/mlx5: fw_tracer: Fix debug print ACPI: video: Fix Lenovo Ideapad Z570 DMI match wifi: mt76: dma: free rx_head in mt76_dma_rx_cleanup m68k: Check syscall_trace_enter() return code net: bcmgenet: Add a check for oversized packets ACPI: Don't build ACPICA with '-Os' ice: add missing checks for PF vsi type inet: fix fast path in __inet_hash_connect() wifi: mt7601u: fix an integer underflow wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds x86/bugs: Reset speculation control settings on init timers: Prevent union confusion from unexpected restart_syscall() thermal: intel: Fix unsigned comparison with less than zero rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait() wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds() blk-iocost: fix divide by 0 error in calc_lcoefs() ARM: dts: exynos: Use Exynos5420 compatible for the MIPI video phy udf: Define EFSCORRUPTED error code rpmsg: glink: Avoid infinite loop on intent for missing channel media: usb: siano: Fix use after free bugs caused by do_submit_urb media: i2c: ov7670: 0 instead of -EINVAL was returned media: rc: Fix use-after-free bugs caused by ene_tx_irqsim() media: i2c: ov772x: Fix memleak in ov772x_probe() media: ov5675: Fix memleak in ov5675_init_controls() powerpc: Remove linker flag from KBUILD_AFLAGS media: platform: ti: Add missing check for devm_regulator_get remoteproc: qcom_q6v5_mss: Use a carveout to authenticate modem headers MIPS: vpe-mt: drop physical_memsize MIPS: SMP-CPS: fix build error when HOTPLUG_CPU not set powerpc/eeh: Set channel state after notifying the drivers powerpc/eeh: Small refactor of eeh_handle_normal_event() powerpc/rtas: ensure 4KB alignment for rtas_data_buf powerpc/rtas: make all exports GPL powerpc/pseries/lparcfg: add missing RTAS retry status handling powerpc/pseries/lpar: add missing RTAS retry status handling clk: Honor CLK_OPS_PARENT_ENABLE in clk_core_is_enabled() powerpc/powernv/ioda: Skip unallocated resources when mapping to PE clk: qcom: gpucc-sdm845: fix clk_dis_wait being programmed for CX GDSC Input: ads7846 - don't check penirq immediately for 7845 Input: ads7846 - don't report pressure for ads7845 clk: renesas: cpg-mssr: Remove superfluous check in resume code clk: renesas: cpg-mssr: Use enum clk_reg_layout instead of a boolean flag clk: renesas: cpg-mssr: Fix use after free if cpg_mssr_common_init() failed mtd: rawnand: sunxi: Fix the size of the last OOB region clk: qcom: gcc-qcs404: fix names of the DSI clocks used as parents clk: qcom: gcc-qcs404: disable gpll[04]_out_aux parents mfd: pcf50633-adc: Fix potential memleak in pcf50633_adc_async_read() selftests/ftrace: Fix bash specific "==" operator sparc: allow PM configs for sparc32 COMPILE_TEST perf tools: Fix auto-complete on aarch64 perf llvm: Fix inadvertent file creation gfs2: jdata writepage fix cifs: Fix warning and UAF when destroy the MR list cifs: Fix lost destroy smbd connection when MR allocate failed nfsd: fix race to check ls_layouts hid: bigben_probe(): validate report count HID: asus: Fix mute and touchpad-toggle keys on Medion Akoya E1239T HID: asus: Add support for multi-touch touchpad on Medion Akoya E1239T HID: asus: Add report_size to struct asus_touchpad_info HID: asus: Only set EV_REP if we are adding a mapping HID: bigben: use spinlock to safely schedule workers HID: bigben_worker() remove unneeded check on report_field HID: bigben: use spinlock to protect concurrent accesses ASoC: soc-dapm.h: fixup warning struct snd_pcm_substream not declared ASoC: dapm: declare missing structure prototypes spi: synquacer: Fix timeout handling in synquacer_spi_transfer_one() dm: remove flush_scheduled_work() during local_exit() hwmon: (mlxreg-fan) Return zero speed for broken fan spi: bcm63xx-hsspi: Fix multi-bit mode setting spi: bcm63xx-hsspi: fix pm_runtime scsi: aic94xx: Add missing check for dma_map_single() hwmon: (ltc2945) Handle error case in ltc2945_value_store gpio: vf610: connect GPIO label to dev name ASoC: soc-compress.c: fixup private_data on snd_soc_new_compress() drm/mediatek: Clean dangling pointer on bind error path drm/mediatek: Drop unbalanced obj unref drm/mediatek: Use NULL instead of 0 for NULL pointer drm/mediatek: remove cast to pointers passed to kfree gpu: host1x: Don't skip assigning syncpoints to channels drm/msm/mdp5: Add check for kzalloc drm: Initialize struct drm_crtc_state.no_vblank from device settings drm/bridge: Introduce drm_bridge_get_next_bridge() drm/bridge: Rename bridge helpers targeting a bridge chain drm/exynos: Don't reset bridge->next drm/msm/dpu: Add check for pstates drm/msm/dpu: Add check for cstate drm/msm: use strscpy instead of strncpy drm/mipi-dsi: Fix byte order of 16-bit DCS set/get brightness ALSA: hda/ca0132: minor fix for allocation size ASoC: fsl_sai: initialize is_dsp_mode flag pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain drm/msm/hdmi: Add missing check for alloc_ordered_workqueue gpu: ipu-v3: common: Add of_node_put() for reference returned by of_graph_get_port_by_id() drm/vc4: dpi: Fix format mapping for RGB565 drm/vc4: dpi: Add option for inverting pixel clock and output enable drm/bridge: megachips: Fix error handling in i2c_register_driver() drm: mxsfb: DRM_MXSFB should depend on ARCH_MXS || ARCH_MXC drm/fourcc: Add missing big-endian XRGB1555 and RGB565 formats selftest: fib_tests: Always cleanup before exit selftests/net: Interpret UDP_GRO cmsg data as an int value irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts irqchip/irq-brcmstb-l2: Set IRQ_LEVEL for level triggered interrupts can: esd_usb: Move mislocated storage of SJA1000_ECC_SEG bits in case of a bus error thermal/drivers/hisi: Drop second sensor hi3660 wifi: mac80211: make rate u32 in sta_set_rate_info_rx() crypto: crypto4xx - Call dma_unmap_page when done wifi: mwifiex: fix loop iterator in mwifiex_update_ampdu_txwinsize() wifi: iwl4965: Add missing check for create_singlethread_workqueue() wifi: iwl3945: Add missing check for create_singlethread_workqueue treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD() usb: gadget: udc: Avoid tasklet passing a global RISC-V: time: initialize hrtimer based broadcast clock event device m68k: /proc/hardware should depend on PROC_FS crypto: rsa-pkcs1pad - Use akcipher_request_complete rds: rds_rm_zerocopy_callback() correct order for list_add_tail() libbpf: Fix alen calculation in libbpf_nla_dump_errormsg() Bluetooth: L2CAP: Fix potential user-after-free OPP: fix error checking in opp_migrate_dentry() tap: tap_open(): correctly initialize socket uid tun: tun_chr_open(): correctly initialize socket uid net: add sock_init_data_uid() mptcp: add sk_stop_timer_sync helper irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain_probe irqchip/irq-mvebu-gicp: Fix refcount leak in mvebu_gicp_probe irqchip/alpine-msi: Fix refcount leak in alpine_msix_init_domains net/mlx5: Enhance debug print in page allocation failure powercap: fix possible name leak in powercap_register_zone() crypto: seqiv - Handle EBUSY correctly crypto: essiv - Handle EBUSY correctly crypto: essiv - remove redundant null pointer check before kfree crypto: ccp - Failure on re-initialization due to duplicate sysfs filename ACPI: battery: Fix missing NUL-termination with large strings wifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback() wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails ath9k: htc: clean up statistics macros ath9k: hif_usb: simplify if-if to if-else wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function wifi: orinoco: check return value of hermes_write_wordrec() ACPICA: nsrepair: handle cases without a return value correctly lib/mpi: Fix buffer overrun when SG is too long genirq: Fix the return type of kstat_cpu_irqs_sum() ACPICA: Drop port I/O validation for some regions crypto: x86/ghash - fix unaligned access in ghash_setkey() wifi: wl3501_cs: don't call kfree_skb() under spin_lock_irqsave() wifi: libertas: cmdresp: don't call kfree_skb() under spin_lock_irqsave() wifi: libertas: main: don't call kfree_skb() under spin_lock_irqsave() wifi: libertas: if_usb: don't call kfree_skb() under spin_lock_irqsave() wifi: libertas_tf: don't call kfree_skb() under spin_lock_irqsave() wifi: brcmfmac: unmap dma buffer in brcmf_msgbuf_alloc_pktid() wifi: brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit() wifi: wilc1000: fix potential memory leak in wilc_mac_xmit() wilc1000: let wilc_mac_xmit() return NETDEV_TX_OK wifi: ipw2200: fix memory leak in ipw_wdev_init() wifi: ipw2x00: don't call dev_kfree_skb() under spin_lock_irqsave() ipw2x00: switch from 'pci_' to 'dma_' API wifi: rtlwifi: Fix global-out-of-bounds bug in _rtl8812ae_phy_set_txpower_limit() rtlwifi: fix -Wpointer-sign warning wifi: rtl8xxxu: don't call dev_kfree_skb() under spin_lock_irqsave() wifi: libertas: fix memory leak in lbs_init_adapter() wifi: iwlegacy: common: don't call dev_kfree_skb() under spin_lock_irqsave() net/wireless: Delete unnecessary checks before the macro call “dev_kfree_skb” wifi: rsi: Fix memory leak in rsi_coex_attach() block: bio-integrity: Copy flags when bio_integrity_payload is cloned sched/rt: pick_next_rt_entity(): check list_entry sched/deadline,rt: Remove unused parameter from pick_next_[rt|dl]_entity() s390/dasd: Fix potential memleak in dasd_eckd_init() s390/dasd: Prepare for additional path event handling blk-mq: correct stale comment of .get_budget blk-mq: wait on correct sbitmap_queue in blk_mq_mark_tag_wait blk-mq: remove stale comment for blk_mq_sched_mark_restart_hctx block: Limit number of items taken from the I/O scheduler in one go Revert "scsi: core: run queue if SCSI device queue isn't ready and queue is idle" arm64: dts: mediatek: mt7622: Add missing pwm-cells to pwm node ARM: dts: imx7s: correct iomuxc gpr mux controller cells arm64: dts: amlogic: meson-gxl-s905d-phicomm-n1: fix led node name arm64: dts: amlogic: meson-gxl: add missing unit address to eth-phy-mux node name arm64: dts: amlogic: meson-gx: add missing unit address to rng node name arm64: dts: amlogic: meson-gx: add missing SCPI sensors compatible arm64: dts: amlogic: meson-axg: fix SCPI clock dvfs node name arm64: dts: amlogic: meson-gx: fix SCPI clock dvfs node name ARM: imx: Call ida_simple_remove() for ida_simple_get ARM: dts: exynos: correct wr-active property in Exynos3250 Rinato ARM: OMAP1: call platform_device_put() in error case in omap1_dm_timer_init() arm64: dts: meson: remove CPU opps below 1GHz for G12A boards arm64: dts: meson-gx: Fix the SCPI DVFS node name and unit address arm64: dts: meson-g12a: Fix internal Ethernet PHY unit name arm64: dts: meson-gx: Fix Ethernet MAC address unit name ARM: zynq: Fix refcount leak in zynq_early_slcr_init arm64: dts: qcom: qcs404: use symbol names for PCIe resets ARM: OMAP2+: Fix memory leak in realtime_counter_init() HID: asus: use spinlock to safely schedule workers HID: asus: use spinlock to protect concurrent accesses HID: asus: Remove check for same LED brightness on set Linux 5.4.234 USB: core: Don't hold device lock while reading the "descriptors" sysfs file USB: serial: option: add support for VW/Skoda "Carstick LTE" dmaengine: sh: rcar-dmac: Check for error num after dma_set_max_seg_size vc_screen: don't clobber return value in vcs_read net: Remove WARN_ON_ONCE(sk->sk_forward_alloc) from sk_stream_kill_queues(). bpf: bpf_fib_lookup should not return neigh in NUD_FAILED state HID: core: Fix deadloop in hid_apply_multiplier. neigh: make sure used and confirmed times are valid IB/hfi1: Assign npages earlier btrfs: send: limit number of clones and allocated memory size ACPI: NFIT: fix a potential deadlock during NFIT teardown ARM: dts: rockchip: add power-domains property to dp node on rk3288 arm64: dts: rockchip: drop unused LED mode property from rk3328-roc-cc Conflicts: Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml Documentation/devicetree/bindings~HEAD arch/arm/mm/dma-mapping.c drivers/clk/qcom/gcc-qcs404.c drivers/iommu/dma-iommu.c drivers/mtd/ubi/wl.c kernel/dma/direct.c Change-Id: I804ccb5552f305c49ec17b323c6c933cc99e6d39
1045 lines
28 KiB
C
1045 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* System Control and Management Interface (SCMI) Message Protocol driver
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*
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* SCMI Message Protocol is used between the System Control Processor(SCP)
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* and the Application Processors(AP). The Message Handling Unit(MHU)
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* provides a mechanism for inter-processor communication between SCP's
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* Cortex M3 and AP.
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*
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* SCP offers control and management of the core/cluster power states,
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* various power domain DVFS including the core/cluster, certain system
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* clocks configuration, thermal sensors and many others.
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*
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* Copyright (C) 2018 ARM Ltd.
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*/
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#include <linux/bitmap.h>
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#include <linux/export.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/ktime.h>
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#include <linux/mailbox_client.h>
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#include <linux/module.h>
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#include <linux/of_address.h>
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#include <linux/of_device.h>
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#include <linux/processor.h>
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#include <linux/semaphore.h>
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#include <linux/slab.h>
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#include "common.h"
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#define MSG_ID_MASK GENMASK(7, 0)
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#define MSG_XTRACT_ID(hdr) FIELD_GET(MSG_ID_MASK, (hdr))
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#define MSG_TYPE_MASK GENMASK(9, 8)
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#define MSG_XTRACT_TYPE(hdr) FIELD_GET(MSG_TYPE_MASK, (hdr))
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#define MSG_TYPE_COMMAND 0
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#define MSG_TYPE_DELAYED_RESP 2
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#define MSG_TYPE_NOTIFICATION 3
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#define MSG_PROTOCOL_ID_MASK GENMASK(17, 10)
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#define MSG_XTRACT_PROT_ID(hdr) FIELD_GET(MSG_PROTOCOL_ID_MASK, (hdr))
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#define MSG_TOKEN_ID_MASK GENMASK(27, 18)
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#define MSG_XTRACT_TOKEN(hdr) FIELD_GET(MSG_TOKEN_ID_MASK, (hdr))
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#define MSG_TOKEN_MAX (MSG_XTRACT_TOKEN(MSG_TOKEN_ID_MASK) + 1)
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enum scmi_error_codes {
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SCMI_SUCCESS = 0, /* Success */
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SCMI_ERR_SUPPORT = -1, /* Not supported */
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SCMI_ERR_PARAMS = -2, /* Invalid Parameters */
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SCMI_ERR_ACCESS = -3, /* Invalid access/permission denied */
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SCMI_ERR_ENTRY = -4, /* Not found */
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SCMI_ERR_RANGE = -5, /* Value out of range */
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SCMI_ERR_BUSY = -6, /* Device busy */
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SCMI_ERR_COMMS = -7, /* Communication Error */
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SCMI_ERR_GENERIC = -8, /* Generic Error */
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SCMI_ERR_HARDWARE = -9, /* Hardware Error */
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SCMI_ERR_PROTOCOL = -10,/* Protocol Error */
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};
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/* List of all SCMI devices active in system */
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static LIST_HEAD(scmi_list);
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/* Protection for the entire list */
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static DEFINE_MUTEX(scmi_list_mutex);
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/**
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* struct scmi_xfers_info - Structure to manage transfer information
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*
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* @xfer_block: Preallocated Message array
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* @xfer_alloc_table: Bitmap table for allocated messages.
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* Index of this bitmap table is also used for message
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* sequence identifier.
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* @xfer_lock: Protection for message allocation
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*/
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struct scmi_xfers_info {
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struct scmi_xfer *xfer_block;
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unsigned long *xfer_alloc_table;
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spinlock_t xfer_lock;
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};
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/**
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* struct scmi_desc - Description of SoC integration
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*
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* @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds)
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* @max_msg: Maximum number of messages that can be pending
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* simultaneously in the system
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* @max_msg_size: Maximum size of data per message that can be handled.
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*/
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struct scmi_desc {
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int max_rx_timeout_ms;
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int max_msg;
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int max_msg_size;
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};
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/**
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* struct scmi_chan_info - Structure representing a SCMI channel information
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*
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* @cl: Mailbox Client
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* @chan: Transmit/Receive mailbox channel
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* @payload: Transmit/Receive mailbox channel payload area
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* @dev: Reference to device in the SCMI hierarchy corresponding to this
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* channel
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* @handle: Pointer to SCMI entity handle
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*/
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struct scmi_chan_info {
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struct mbox_client cl;
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struct mbox_chan *chan;
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void __iomem *payload;
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struct device *dev;
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struct scmi_handle *handle;
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};
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/**
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* struct scmi_info - Structure representing a SCMI instance
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*
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* @dev: Device pointer
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* @desc: SoC description for this instance
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* @handle: Instance of SCMI handle to send to clients
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* @version: SCMI revision information containing protocol version,
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* implementation version and (sub-)vendor identification.
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* @tx_minfo: Universal Transmit Message management info
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* @tx_idr: IDR object to map protocol id to Tx channel info pointer
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* @rx_idr: IDR object to map protocol id to Rx channel info pointer
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* @protocols_imp: List of protocols implemented, currently maximum of
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* MAX_PROTOCOLS_IMP elements allocated by the base protocol
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* @node: List head
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* @users: Number of users of this instance
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*/
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struct scmi_info {
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struct device *dev;
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const struct scmi_desc *desc;
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struct scmi_revision_info version;
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struct scmi_handle handle;
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struct scmi_xfers_info tx_minfo;
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struct idr tx_idr;
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struct idr rx_idr;
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u8 *protocols_imp;
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struct list_head node;
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int users;
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};
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#define client_to_scmi_chan_info(c) container_of(c, struct scmi_chan_info, cl)
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#define handle_to_scmi_info(h) container_of(h, struct scmi_info, handle)
|
|
|
|
/*
|
|
* SCMI specification requires all parameters, message headers, return
|
|
* arguments or any protocol data to be expressed in little endian
|
|
* format only.
|
|
*/
|
|
struct scmi_shared_mem {
|
|
__le32 reserved;
|
|
__le32 channel_status;
|
|
#define SCMI_SHMEM_CHAN_STAT_CHANNEL_ERROR BIT(1)
|
|
#define SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE BIT(0)
|
|
__le32 reserved1[2];
|
|
__le32 flags;
|
|
#define SCMI_SHMEM_FLAG_INTR_ENABLED BIT(0)
|
|
__le32 length;
|
|
__le32 msg_header;
|
|
u8 msg_payload[0];
|
|
};
|
|
|
|
static const int scmi_linux_errmap[] = {
|
|
/* better than switch case as long as return value is continuous */
|
|
0, /* SCMI_SUCCESS */
|
|
-EOPNOTSUPP, /* SCMI_ERR_SUPPORT */
|
|
-EINVAL, /* SCMI_ERR_PARAM */
|
|
-EACCES, /* SCMI_ERR_ACCESS */
|
|
-ENOENT, /* SCMI_ERR_ENTRY */
|
|
-ERANGE, /* SCMI_ERR_RANGE */
|
|
-EBUSY, /* SCMI_ERR_BUSY */
|
|
-ECOMM, /* SCMI_ERR_COMMS */
|
|
-EIO, /* SCMI_ERR_GENERIC */
|
|
-EREMOTEIO, /* SCMI_ERR_HARDWARE */
|
|
-EPROTO, /* SCMI_ERR_PROTOCOL */
|
|
};
|
|
|
|
static int scmi_mbox_free_channel(int id, void *p, void *data);
|
|
|
|
static inline int scmi_to_linux_errno(int errno)
|
|
{
|
|
int err_idx = -errno;
|
|
|
|
if (err_idx >= SCMI_SUCCESS && err_idx < ARRAY_SIZE(scmi_linux_errmap))
|
|
return scmi_linux_errmap[err_idx];
|
|
return -EIO;
|
|
}
|
|
|
|
/**
|
|
* scmi_dump_header_dbg() - Helper to dump a message header.
|
|
*
|
|
* @dev: Device pointer corresponding to the SCMI entity
|
|
* @hdr: pointer to header.
|
|
*/
|
|
static inline void scmi_dump_header_dbg(struct device *dev,
|
|
struct scmi_msg_hdr *hdr)
|
|
{
|
|
dev_dbg(dev, "Message ID: %x Sequence ID: %x Protocol: %x\n",
|
|
hdr->id, hdr->seq, hdr->protocol_id);
|
|
}
|
|
|
|
static void scmi_fetch_response(struct scmi_xfer *xfer,
|
|
struct scmi_shared_mem __iomem *mem)
|
|
{
|
|
xfer->hdr.status = ioread32(mem->msg_payload);
|
|
/* Skip the length of header and status in payload area i.e 8 bytes */
|
|
xfer->rx.len = min_t(size_t, xfer->rx.len, ioread32(&mem->length) - 8);
|
|
|
|
/* Take a copy to the rx buffer.. */
|
|
memcpy_fromio(xfer->rx.buf, mem->msg_payload + 4, xfer->rx.len);
|
|
}
|
|
|
|
/**
|
|
* pack_scmi_header() - packs and returns 32-bit header
|
|
*
|
|
* @hdr: pointer to header containing all the information on message id,
|
|
* protocol id and sequence id.
|
|
*
|
|
* Return: 32-bit packed message header to be sent to the platform.
|
|
*/
|
|
static inline u32 pack_scmi_header(struct scmi_msg_hdr *hdr)
|
|
{
|
|
return FIELD_PREP(MSG_ID_MASK, hdr->id) |
|
|
FIELD_PREP(MSG_TOKEN_ID_MASK, hdr->seq) |
|
|
FIELD_PREP(MSG_PROTOCOL_ID_MASK, hdr->protocol_id);
|
|
}
|
|
|
|
/**
|
|
* unpack_scmi_header() - unpacks and records message and protocol id
|
|
*
|
|
* @msg_hdr: 32-bit packed message header sent from the platform
|
|
* @hdr: pointer to header to fetch message and protocol id.
|
|
*/
|
|
static inline void unpack_scmi_header(u32 msg_hdr, struct scmi_msg_hdr *hdr)
|
|
{
|
|
hdr->id = MSG_XTRACT_ID(msg_hdr);
|
|
hdr->protocol_id = MSG_XTRACT_PROT_ID(msg_hdr);
|
|
}
|
|
|
|
/**
|
|
* scmi_tx_prepare() - mailbox client callback to prepare for the transfer
|
|
*
|
|
* @cl: client pointer
|
|
* @m: mailbox message
|
|
*
|
|
* This function prepares the shared memory which contains the header and the
|
|
* payload.
|
|
*/
|
|
static void scmi_tx_prepare(struct mbox_client *cl, void *m)
|
|
{
|
|
struct scmi_xfer *t = m;
|
|
struct scmi_chan_info *cinfo = client_to_scmi_chan_info(cl);
|
|
struct scmi_shared_mem __iomem *mem = cinfo->payload;
|
|
|
|
/*
|
|
* Ideally channel must be free by now unless OS timeout last
|
|
* request and platform continued to process the same, wait
|
|
* until it releases the shared memory, otherwise we may endup
|
|
* overwriting its response with new message payload or vice-versa
|
|
*/
|
|
spin_until_cond(ioread32(&mem->channel_status) &
|
|
SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE);
|
|
/* Mark channel busy + clear error */
|
|
iowrite32(0x0, &mem->channel_status);
|
|
iowrite32(t->hdr.poll_completion ? 0 : SCMI_SHMEM_FLAG_INTR_ENABLED,
|
|
&mem->flags);
|
|
iowrite32(sizeof(mem->msg_header) + t->tx.len, &mem->length);
|
|
iowrite32(pack_scmi_header(&t->hdr), &mem->msg_header);
|
|
if (t->tx.buf)
|
|
memcpy_toio(mem->msg_payload, t->tx.buf, t->tx.len);
|
|
}
|
|
|
|
/**
|
|
* scmi_xfer_get() - Allocate one message
|
|
*
|
|
* @handle: Pointer to SCMI entity handle
|
|
* @minfo: Pointer to Tx/Rx Message management info based on channel type
|
|
*
|
|
* Helper function which is used by various message functions that are
|
|
* exposed to clients of this driver for allocating a message traffic event.
|
|
*
|
|
* This function can sleep depending on pending requests already in the system
|
|
* for the SCMI entity. Further, this also holds a spinlock to maintain
|
|
* integrity of internal data structures.
|
|
*
|
|
* Return: 0 if all went fine, else corresponding error.
|
|
*/
|
|
static struct scmi_xfer *scmi_xfer_get(const struct scmi_handle *handle,
|
|
struct scmi_xfers_info *minfo)
|
|
{
|
|
u16 xfer_id;
|
|
struct scmi_xfer *xfer;
|
|
unsigned long flags, bit_pos;
|
|
struct scmi_info *info = handle_to_scmi_info(handle);
|
|
|
|
/* Keep the locked section as small as possible */
|
|
spin_lock_irqsave(&minfo->xfer_lock, flags);
|
|
bit_pos = find_first_zero_bit(minfo->xfer_alloc_table,
|
|
info->desc->max_msg);
|
|
if (bit_pos == info->desc->max_msg) {
|
|
spin_unlock_irqrestore(&minfo->xfer_lock, flags);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
set_bit(bit_pos, minfo->xfer_alloc_table);
|
|
spin_unlock_irqrestore(&minfo->xfer_lock, flags);
|
|
|
|
xfer_id = bit_pos;
|
|
|
|
xfer = &minfo->xfer_block[xfer_id];
|
|
xfer->hdr.seq = xfer_id;
|
|
reinit_completion(&xfer->done);
|
|
|
|
return xfer;
|
|
}
|
|
|
|
/**
|
|
* __scmi_xfer_put() - Release a message
|
|
*
|
|
* @minfo: Pointer to Tx/Rx Message management info based on channel type
|
|
* @xfer: message that was reserved by scmi_xfer_get
|
|
*
|
|
* This holds a spinlock to maintain integrity of internal data structures.
|
|
*/
|
|
static void
|
|
__scmi_xfer_put(struct scmi_xfers_info *minfo, struct scmi_xfer *xfer)
|
|
{
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* Keep the locked section as small as possible
|
|
* NOTE: we might escape with smp_mb and no lock here..
|
|
* but just be conservative and symmetric.
|
|
*/
|
|
spin_lock_irqsave(&minfo->xfer_lock, flags);
|
|
clear_bit(xfer->hdr.seq, minfo->xfer_alloc_table);
|
|
spin_unlock_irqrestore(&minfo->xfer_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* scmi_rx_callback() - mailbox client callback for receive messages
|
|
*
|
|
* @cl: client pointer
|
|
* @m: mailbox message
|
|
*
|
|
* Processes one received message to appropriate transfer information and
|
|
* signals completion of the transfer.
|
|
*
|
|
* NOTE: This function will be invoked in IRQ context, hence should be
|
|
* as optimal as possible.
|
|
*/
|
|
static void scmi_rx_callback(struct mbox_client *cl, void *m)
|
|
{
|
|
u8 msg_type;
|
|
u32 msg_hdr;
|
|
u16 xfer_id;
|
|
struct scmi_xfer *xfer;
|
|
struct scmi_chan_info *cinfo = client_to_scmi_chan_info(cl);
|
|
struct device *dev = cinfo->dev;
|
|
struct scmi_info *info = handle_to_scmi_info(cinfo->handle);
|
|
struct scmi_xfers_info *minfo = &info->tx_minfo;
|
|
struct scmi_shared_mem __iomem *mem = cinfo->payload;
|
|
|
|
msg_hdr = ioread32(&mem->msg_header);
|
|
msg_type = MSG_XTRACT_TYPE(msg_hdr);
|
|
xfer_id = MSG_XTRACT_TOKEN(msg_hdr);
|
|
|
|
if (msg_type == MSG_TYPE_NOTIFICATION)
|
|
return; /* Notifications not yet supported */
|
|
|
|
/* Are we even expecting this? */
|
|
if (!test_bit(xfer_id, minfo->xfer_alloc_table)) {
|
|
dev_err(dev, "message for %d is not expected!\n", xfer_id);
|
|
return;
|
|
}
|
|
|
|
xfer = &minfo->xfer_block[xfer_id];
|
|
|
|
/* rx.len could be shrunk in the sync do_xfer, so reset to maxsz */
|
|
if (msg_type == MSG_TYPE_DELAYED_RESP)
|
|
xfer->rx.len = info->desc->max_msg_size;
|
|
|
|
scmi_dump_header_dbg(dev, &xfer->hdr);
|
|
|
|
scmi_fetch_response(xfer, mem);
|
|
|
|
if (msg_type == MSG_TYPE_DELAYED_RESP)
|
|
complete(xfer->async_done);
|
|
else
|
|
complete(&xfer->done);
|
|
}
|
|
|
|
/**
|
|
* scmi_xfer_put() - Release a transmit message
|
|
*
|
|
* @handle: Pointer to SCMI entity handle
|
|
* @xfer: message that was reserved by scmi_xfer_get
|
|
*/
|
|
void scmi_xfer_put(const struct scmi_handle *handle, struct scmi_xfer *xfer)
|
|
{
|
|
struct scmi_info *info = handle_to_scmi_info(handle);
|
|
|
|
__scmi_xfer_put(&info->tx_minfo, xfer);
|
|
}
|
|
|
|
static bool
|
|
scmi_xfer_poll_done(const struct scmi_chan_info *cinfo, struct scmi_xfer *xfer)
|
|
{
|
|
struct scmi_shared_mem __iomem *mem = cinfo->payload;
|
|
u16 xfer_id = MSG_XTRACT_TOKEN(ioread32(&mem->msg_header));
|
|
|
|
if (xfer->hdr.seq != xfer_id)
|
|
return false;
|
|
|
|
return ioread32(&mem->channel_status) &
|
|
(SCMI_SHMEM_CHAN_STAT_CHANNEL_ERROR |
|
|
SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE);
|
|
}
|
|
|
|
#define SCMI_MAX_POLL_TO_NS (100 * NSEC_PER_USEC)
|
|
|
|
static bool scmi_xfer_done_no_timeout(const struct scmi_chan_info *cinfo,
|
|
struct scmi_xfer *xfer, ktime_t stop)
|
|
{
|
|
ktime_t __cur = ktime_get();
|
|
|
|
return scmi_xfer_poll_done(cinfo, xfer) || ktime_after(__cur, stop);
|
|
}
|
|
|
|
/**
|
|
* scmi_do_xfer() - Do one transfer
|
|
*
|
|
* @handle: Pointer to SCMI entity handle
|
|
* @xfer: Transfer to initiate and wait for response
|
|
*
|
|
* Return: -ETIMEDOUT in case of no response, if transmit error,
|
|
* return corresponding error, else if all goes well,
|
|
* return 0.
|
|
*/
|
|
int scmi_do_xfer(const struct scmi_handle *handle, struct scmi_xfer *xfer)
|
|
{
|
|
int ret;
|
|
int timeout;
|
|
struct scmi_info *info = handle_to_scmi_info(handle);
|
|
struct device *dev = info->dev;
|
|
struct scmi_chan_info *cinfo;
|
|
|
|
cinfo = idr_find(&info->tx_idr, xfer->hdr.protocol_id);
|
|
if (unlikely(!cinfo))
|
|
return -EINVAL;
|
|
|
|
ret = mbox_send_message(cinfo->chan, xfer);
|
|
if (ret < 0) {
|
|
dev_dbg(dev, "mbox send fail %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* mbox_send_message returns non-negative value on success, so reset */
|
|
ret = 0;
|
|
|
|
if (xfer->hdr.poll_completion) {
|
|
ktime_t stop = ktime_add_ns(ktime_get(), SCMI_MAX_POLL_TO_NS);
|
|
|
|
spin_until_cond(scmi_xfer_done_no_timeout(cinfo, xfer, stop));
|
|
|
|
if (ktime_before(ktime_get(), stop))
|
|
scmi_fetch_response(xfer, cinfo->payload);
|
|
else
|
|
ret = -ETIMEDOUT;
|
|
} else {
|
|
/* And we wait for the response. */
|
|
timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms);
|
|
if (!wait_for_completion_timeout(&xfer->done, timeout)) {
|
|
dev_err(dev, "mbox timed out in resp(caller: %pS)\n",
|
|
(void *)_RET_IP_);
|
|
ret = -ETIMEDOUT;
|
|
}
|
|
}
|
|
|
|
if (!ret && xfer->hdr.status)
|
|
ret = scmi_to_linux_errno(xfer->hdr.status);
|
|
|
|
/*
|
|
* NOTE: we might prefer not to need the mailbox ticker to manage the
|
|
* transfer queueing since the protocol layer queues things by itself.
|
|
* Unfortunately, we have to kick the mailbox framework after we have
|
|
* received our message.
|
|
*/
|
|
mbox_client_txdone(cinfo->chan, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void scmi_reset_rx_to_maxsz(const struct scmi_handle *handle,
|
|
struct scmi_xfer *xfer)
|
|
{
|
|
struct scmi_info *info = handle_to_scmi_info(handle);
|
|
|
|
xfer->rx.len = info->desc->max_msg_size;
|
|
}
|
|
|
|
#define SCMI_MAX_RESPONSE_TIMEOUT (2 * MSEC_PER_SEC)
|
|
|
|
/**
|
|
* scmi_do_xfer_with_response() - Do one transfer and wait until the delayed
|
|
* response is received
|
|
*
|
|
* @handle: Pointer to SCMI entity handle
|
|
* @xfer: Transfer to initiate and wait for response
|
|
*
|
|
* Return: -ETIMEDOUT in case of no delayed response, if transmit error,
|
|
* return corresponding error, else if all goes well, return 0.
|
|
*/
|
|
int scmi_do_xfer_with_response(const struct scmi_handle *handle,
|
|
struct scmi_xfer *xfer)
|
|
{
|
|
int ret, timeout = msecs_to_jiffies(SCMI_MAX_RESPONSE_TIMEOUT);
|
|
DECLARE_COMPLETION_ONSTACK(async_response);
|
|
|
|
xfer->async_done = &async_response;
|
|
|
|
ret = scmi_do_xfer(handle, xfer);
|
|
if (!ret) {
|
|
if (!wait_for_completion_timeout(xfer->async_done, timeout))
|
|
ret = -ETIMEDOUT;
|
|
else if (xfer->hdr.status)
|
|
ret = scmi_to_linux_errno(xfer->hdr.status);
|
|
}
|
|
|
|
xfer->async_done = NULL;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* scmi_xfer_get_init() - Allocate and initialise one message for transmit
|
|
*
|
|
* @handle: Pointer to SCMI entity handle
|
|
* @msg_id: Message identifier
|
|
* @prot_id: Protocol identifier for the message
|
|
* @tx_size: transmit message size
|
|
* @rx_size: receive message size
|
|
* @p: pointer to the allocated and initialised message
|
|
*
|
|
* This function allocates the message using @scmi_xfer_get and
|
|
* initialise the header.
|
|
*
|
|
* Return: 0 if all went fine with @p pointing to message, else
|
|
* corresponding error.
|
|
*/
|
|
int scmi_xfer_get_init(const struct scmi_handle *handle, u8 msg_id, u8 prot_id,
|
|
size_t tx_size, size_t rx_size, struct scmi_xfer **p)
|
|
{
|
|
int ret;
|
|
struct scmi_xfer *xfer;
|
|
struct scmi_info *info = handle_to_scmi_info(handle);
|
|
struct scmi_xfers_info *minfo = &info->tx_minfo;
|
|
struct device *dev = info->dev;
|
|
|
|
/* Ensure we have sane transfer sizes */
|
|
if (rx_size > info->desc->max_msg_size ||
|
|
tx_size > info->desc->max_msg_size)
|
|
return -ERANGE;
|
|
|
|
xfer = scmi_xfer_get(handle, minfo);
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "failed to get free message slot(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
xfer->tx.len = tx_size;
|
|
xfer->rx.len = rx_size ? : info->desc->max_msg_size;
|
|
xfer->hdr.id = msg_id;
|
|
xfer->hdr.protocol_id = prot_id;
|
|
xfer->hdr.poll_completion = false;
|
|
|
|
*p = xfer;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* scmi_version_get() - command to get the revision of the SCMI entity
|
|
*
|
|
* @handle: Pointer to SCMI entity handle
|
|
* @protocol: Protocol identifier for the message
|
|
* @version: Holds returned version of protocol.
|
|
*
|
|
* Updates the SCMI information in the internal data structure.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
int scmi_version_get(const struct scmi_handle *handle, u8 protocol,
|
|
u32 *version)
|
|
{
|
|
int ret;
|
|
__le32 *rev_info;
|
|
struct scmi_xfer *t;
|
|
|
|
ret = scmi_xfer_get_init(handle, PROTOCOL_VERSION, protocol, 0,
|
|
sizeof(*version), &t);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = scmi_do_xfer(handle, t);
|
|
if (!ret) {
|
|
rev_info = t->rx.buf;
|
|
*version = le32_to_cpu(*rev_info);
|
|
}
|
|
|
|
scmi_xfer_put(handle, t);
|
|
return ret;
|
|
}
|
|
|
|
void scmi_setup_protocol_implemented(const struct scmi_handle *handle,
|
|
u8 *prot_imp)
|
|
{
|
|
struct scmi_info *info = handle_to_scmi_info(handle);
|
|
|
|
info->protocols_imp = prot_imp;
|
|
}
|
|
|
|
static bool
|
|
scmi_is_protocol_implemented(const struct scmi_handle *handle, u8 prot_id)
|
|
{
|
|
int i;
|
|
struct scmi_info *info = handle_to_scmi_info(handle);
|
|
|
|
if (!info->protocols_imp)
|
|
return false;
|
|
|
|
for (i = 0; i < MAX_PROTOCOLS_IMP; i++)
|
|
if (info->protocols_imp[i] == prot_id)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* scmi_handle_get() - Get the SCMI handle for a device
|
|
*
|
|
* @dev: pointer to device for which we want SCMI handle
|
|
*
|
|
* NOTE: The function does not track individual clients of the framework
|
|
* and is expected to be maintained by caller of SCMI protocol library.
|
|
* scmi_handle_put must be balanced with successful scmi_handle_get
|
|
*
|
|
* Return: pointer to handle if successful, NULL on error
|
|
*/
|
|
struct scmi_handle *scmi_handle_get(struct device *dev)
|
|
{
|
|
struct list_head *p;
|
|
struct scmi_info *info;
|
|
struct scmi_handle *handle = NULL;
|
|
|
|
mutex_lock(&scmi_list_mutex);
|
|
list_for_each(p, &scmi_list) {
|
|
info = list_entry(p, struct scmi_info, node);
|
|
if (dev->parent == info->dev) {
|
|
handle = &info->handle;
|
|
info->users++;
|
|
break;
|
|
}
|
|
}
|
|
mutex_unlock(&scmi_list_mutex);
|
|
|
|
return handle;
|
|
}
|
|
|
|
/**
|
|
* scmi_handle_put() - Release the handle acquired by scmi_handle_get
|
|
*
|
|
* @handle: handle acquired by scmi_handle_get
|
|
*
|
|
* NOTE: The function does not track individual clients of the framework
|
|
* and is expected to be maintained by caller of SCMI protocol library.
|
|
* scmi_handle_put must be balanced with successful scmi_handle_get
|
|
*
|
|
* Return: 0 is successfully released
|
|
* if null was passed, it returns -EINVAL;
|
|
*/
|
|
int scmi_handle_put(const struct scmi_handle *handle)
|
|
{
|
|
struct scmi_info *info;
|
|
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_scmi_info(handle);
|
|
mutex_lock(&scmi_list_mutex);
|
|
if (!WARN_ON(!info->users))
|
|
info->users--;
|
|
mutex_unlock(&scmi_list_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int scmi_xfer_info_init(struct scmi_info *sinfo)
|
|
{
|
|
int i;
|
|
struct scmi_xfer *xfer;
|
|
struct device *dev = sinfo->dev;
|
|
const struct scmi_desc *desc = sinfo->desc;
|
|
struct scmi_xfers_info *info = &sinfo->tx_minfo;
|
|
|
|
/* Pre-allocated messages, no more than what hdr.seq can support */
|
|
if (WARN_ON(!desc->max_msg || desc->max_msg > MSG_TOKEN_MAX)) {
|
|
dev_err(dev,
|
|
"Invalid maximum messages %d, not in range [1 - %lu]\n",
|
|
desc->max_msg, MSG_TOKEN_MAX);
|
|
return -EINVAL;
|
|
}
|
|
|
|
info->xfer_block = devm_kcalloc(dev, desc->max_msg,
|
|
sizeof(*info->xfer_block), GFP_KERNEL);
|
|
if (!info->xfer_block)
|
|
return -ENOMEM;
|
|
|
|
info->xfer_alloc_table = devm_kcalloc(dev, BITS_TO_LONGS(desc->max_msg),
|
|
sizeof(long), GFP_KERNEL);
|
|
if (!info->xfer_alloc_table)
|
|
return -ENOMEM;
|
|
|
|
/* Pre-initialize the buffer pointer to pre-allocated buffers */
|
|
for (i = 0, xfer = info->xfer_block; i < desc->max_msg; i++, xfer++) {
|
|
xfer->rx.buf = devm_kcalloc(dev, sizeof(u8), desc->max_msg_size,
|
|
GFP_KERNEL);
|
|
if (!xfer->rx.buf)
|
|
return -ENOMEM;
|
|
|
|
xfer->tx.buf = xfer->rx.buf;
|
|
init_completion(&xfer->done);
|
|
}
|
|
|
|
spin_lock_init(&info->xfer_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int scmi_mailbox_check(struct device_node *np, int idx)
|
|
{
|
|
return of_parse_phandle_with_args(np, "mboxes", "#mbox-cells",
|
|
idx, NULL);
|
|
}
|
|
|
|
static int scmi_mailbox_chan_validate(struct device *cdev)
|
|
{
|
|
int num_mb, num_sh, ret = 0;
|
|
struct device_node *np = cdev->of_node;
|
|
|
|
num_mb = of_count_phandle_with_args(np, "mboxes", "#mbox-cells");
|
|
num_sh = of_count_phandle_with_args(np, "shmem", NULL);
|
|
/* Bail out if mboxes and shmem descriptors are inconsistent */
|
|
if (num_mb <= 0 || num_sh > 2 || num_mb != num_sh) {
|
|
dev_warn(cdev, "Invalid channel descriptor for '%s'\n",
|
|
of_node_full_name(np));
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (num_sh > 1) {
|
|
struct device_node *np_tx, *np_rx;
|
|
|
|
np_tx = of_parse_phandle(np, "shmem", 0);
|
|
np_rx = of_parse_phandle(np, "shmem", 1);
|
|
/* SCMI Tx and Rx shared mem areas have to be distinct */
|
|
if (!np_tx || !np_rx || np_tx == np_rx) {
|
|
dev_warn(cdev, "Invalid shmem descriptor for '%s'\n",
|
|
of_node_full_name(np));
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
of_node_put(np_tx);
|
|
of_node_put(np_rx);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int scmi_mbox_chan_setup(struct scmi_info *info, struct device *dev,
|
|
int prot_id, bool tx)
|
|
{
|
|
int ret, idx;
|
|
struct resource res;
|
|
resource_size_t size;
|
|
struct device_node *shmem, *np = dev->of_node;
|
|
struct scmi_chan_info *cinfo;
|
|
struct mbox_client *cl;
|
|
struct idr *idr;
|
|
const char *desc = tx ? "Tx" : "Rx";
|
|
|
|
/* Transmit channel is first entry i.e. index 0 */
|
|
idx = tx ? 0 : 1;
|
|
idr = tx ? &info->tx_idr : &info->rx_idr;
|
|
|
|
if (scmi_mailbox_check(np, idx)) {
|
|
cinfo = idr_find(idr, SCMI_PROTOCOL_BASE);
|
|
if (unlikely(!cinfo)) /* Possible only if platform has no Rx */
|
|
return -EINVAL;
|
|
goto idr_alloc;
|
|
}
|
|
|
|
ret = scmi_mailbox_chan_validate(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
cinfo = devm_kzalloc(info->dev, sizeof(*cinfo), GFP_KERNEL);
|
|
if (!cinfo)
|
|
return -ENOMEM;
|
|
|
|
cinfo->dev = dev;
|
|
|
|
cl = &cinfo->cl;
|
|
cl->dev = dev;
|
|
cl->rx_callback = scmi_rx_callback;
|
|
cl->tx_prepare = tx ? scmi_tx_prepare : NULL;
|
|
cl->tx_block = false;
|
|
cl->knows_txdone = tx;
|
|
|
|
shmem = of_parse_phandle(np, "shmem", idx);
|
|
ret = of_address_to_resource(shmem, 0, &res);
|
|
of_node_put(shmem);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get SCMI %s payload memory\n", desc);
|
|
return ret;
|
|
}
|
|
|
|
size = resource_size(&res);
|
|
cinfo->payload = devm_ioremap(info->dev, res.start, size);
|
|
if (!cinfo->payload) {
|
|
dev_err(dev, "failed to ioremap SCMI %s payload\n", desc);
|
|
return -EADDRNOTAVAIL;
|
|
}
|
|
|
|
cinfo->chan = mbox_request_channel(cl, idx);
|
|
if (IS_ERR(cinfo->chan)) {
|
|
ret = PTR_ERR(cinfo->chan);
|
|
if (ret != -EPROBE_DEFER)
|
|
dev_err(dev, "failed to request SCMI %s mailbox\n",
|
|
desc);
|
|
return ret;
|
|
}
|
|
|
|
idr_alloc:
|
|
ret = idr_alloc(idr, cinfo, prot_id, prot_id + 1, GFP_KERNEL);
|
|
if (ret != prot_id) {
|
|
dev_err(dev, "unable to allocate SCMI idr slot err %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
cinfo->handle = &info->handle;
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
scmi_mbox_txrx_setup(struct scmi_info *info, struct device *dev, int prot_id)
|
|
{
|
|
int ret = scmi_mbox_chan_setup(info, dev, prot_id, true);
|
|
|
|
if (!ret) /* Rx is optional, hence no error check */
|
|
scmi_mbox_chan_setup(info, dev, prot_id, false);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline void
|
|
scmi_create_protocol_device(struct device_node *np, struct scmi_info *info,
|
|
int prot_id)
|
|
{
|
|
struct scmi_device *sdev;
|
|
|
|
sdev = scmi_device_create(np, info->dev, prot_id);
|
|
if (!sdev) {
|
|
dev_err(info->dev, "failed to create %d protocol device\n",
|
|
prot_id);
|
|
return;
|
|
}
|
|
|
|
if (scmi_mbox_txrx_setup(info, &sdev->dev, prot_id)) {
|
|
dev_err(&sdev->dev, "failed to setup transport\n");
|
|
scmi_device_destroy(sdev);
|
|
return;
|
|
}
|
|
|
|
/* setup handle now as the transport is ready */
|
|
scmi_set_handle(sdev);
|
|
}
|
|
|
|
static void scmi_cleanup_mbox_channels(struct scmi_info *info)
|
|
{
|
|
struct idr *idr;
|
|
|
|
/* free tx channels */
|
|
idr = &info->tx_idr;
|
|
idr_for_each(idr, scmi_mbox_free_channel, idr);
|
|
idr_destroy(&info->tx_idr);
|
|
|
|
/* free rx channels */
|
|
idr = &info->rx_idr;
|
|
idr_for_each(idr, scmi_mbox_free_channel, idr);
|
|
idr_destroy(&info->rx_idr);
|
|
}
|
|
|
|
static int scmi_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
struct scmi_handle *handle;
|
|
const struct scmi_desc *desc;
|
|
struct scmi_info *info;
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *child, *np = dev->of_node;
|
|
|
|
/* Only mailbox method supported, check for the presence of one */
|
|
if (scmi_mailbox_check(np, 0)) {
|
|
dev_err(dev, "no mailbox found in %pOF\n", np);
|
|
return -EINVAL;
|
|
}
|
|
|
|
desc = of_device_get_match_data(dev);
|
|
if (!desc)
|
|
return -EINVAL;
|
|
|
|
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
info->dev = dev;
|
|
info->desc = desc;
|
|
INIT_LIST_HEAD(&info->node);
|
|
|
|
ret = scmi_xfer_info_init(info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
platform_set_drvdata(pdev, info);
|
|
idr_init(&info->tx_idr);
|
|
idr_init(&info->rx_idr);
|
|
|
|
handle = &info->handle;
|
|
handle->dev = info->dev;
|
|
handle->version = &info->version;
|
|
|
|
ret = scmi_mbox_txrx_setup(info, dev, SCMI_PROTOCOL_BASE);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = scmi_base_protocol_init(handle);
|
|
if (ret) {
|
|
dev_err(dev, "unable to communicate with SCMI(%d)\n", ret);
|
|
scmi_cleanup_mbox_channels(info);
|
|
return ret;
|
|
}
|
|
|
|
mutex_lock(&scmi_list_mutex);
|
|
list_add_tail(&info->node, &scmi_list);
|
|
mutex_unlock(&scmi_list_mutex);
|
|
|
|
for_each_available_child_of_node(np, child) {
|
|
u32 prot_id;
|
|
|
|
if (of_property_read_u32(child, "reg", &prot_id))
|
|
continue;
|
|
|
|
if (!FIELD_FIT(MSG_PROTOCOL_ID_MASK, prot_id))
|
|
dev_err(dev, "Out of range protocol %d\n", prot_id);
|
|
|
|
if (!scmi_is_protocol_implemented(handle, prot_id)) {
|
|
dev_err(dev, "SCMI protocol %d not implemented\n",
|
|
prot_id);
|
|
continue;
|
|
}
|
|
|
|
scmi_create_protocol_device(child, info, prot_id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int scmi_mbox_free_channel(int id, void *p, void *data)
|
|
{
|
|
struct scmi_chan_info *cinfo = p;
|
|
struct idr *idr = data;
|
|
|
|
if (!IS_ERR_OR_NULL(cinfo->chan)) {
|
|
mbox_free_channel(cinfo->chan);
|
|
cinfo->chan = NULL;
|
|
}
|
|
|
|
idr_remove(idr, id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int scmi_remove(struct platform_device *pdev)
|
|
{
|
|
int ret = 0;
|
|
struct scmi_info *info = platform_get_drvdata(pdev);
|
|
struct idr *idr = &info->tx_idr;
|
|
|
|
mutex_lock(&scmi_list_mutex);
|
|
if (info->users)
|
|
ret = -EBUSY;
|
|
else
|
|
list_del(&info->node);
|
|
mutex_unlock(&scmi_list_mutex);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Safe to free channels since no more users */
|
|
ret = idr_for_each(idr, scmi_mbox_free_channel, idr);
|
|
idr_destroy(&info->tx_idr);
|
|
|
|
idr = &info->rx_idr;
|
|
ret = idr_for_each(idr, scmi_mbox_free_channel, idr);
|
|
idr_destroy(&info->rx_idr);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct scmi_desc scmi_generic_desc = {
|
|
.max_rx_timeout_ms = 1000, /* We may increase this if required */
|
|
.max_msg = 20, /* Limited by MBOX_TX_QUEUE_LEN */
|
|
.max_msg_size = 128,
|
|
};
|
|
|
|
/* Each compatible listed below must have descriptor associated with it */
|
|
static const struct of_device_id scmi_of_match[] = {
|
|
{ .compatible = "arm,scmi", .data = &scmi_generic_desc },
|
|
{ /* Sentinel */ },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, scmi_of_match);
|
|
|
|
static struct platform_driver scmi_driver = {
|
|
.driver = {
|
|
.name = "arm-scmi",
|
|
.of_match_table = scmi_of_match,
|
|
},
|
|
.probe = scmi_probe,
|
|
.remove = scmi_remove,
|
|
};
|
|
|
|
module_platform_driver(scmi_driver);
|
|
|
|
MODULE_ALIAS("platform:arm-scmi");
|
|
MODULE_AUTHOR("Sudeep Holla <sudeep.holla@arm.com>");
|
|
MODULE_DESCRIPTION("ARM SCMI protocol driver");
|
|
MODULE_LICENSE("GPL v2");
|