8b338e2310
* aosp/android-4.19-stable: Revert "xhci: Add grace period after xHC start to prevent premature runtime suspend." Revert "USB: core: Prevent nested device-reset calls" Revert "mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse" Revert "sched/deadline: Fix priority inheritance with multiple scheduling classes" Revert "kernel/sched: Remove dl_boosted flag comment" Revert "fs: check FMODE_LSEEK to control internal pipe splicing" Linux 4.19.259 tracefs: Only clobber mode/uid/gid on remount if asked net: dp83822: disable rx error interrupt mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region() usb: storage: Add ASUS <0x0b05:0x1932> to IGNORE_UAS platform/x86: acer-wmi: Acer Aspire One AOD270/Packard Bell Dot keymap fixes perf/arm_pmu_platform: fix tests for platform_get_irq() failure Input: iforce - add support for Boeder Force Feedback Wheel ieee802154: cc2520: add rc code in cc2520_tx() tg3: Disable tg3 device on system reboot to avoid triggering AER HID: ishtp-hid-clientHID: ishtp-hid-client: Fix comment typo drm/msm/rd: Fix FIFO-full deadlock Linux 4.19.258 SUNRPC: use _bh spinlocking on ->transport_lock MIPS: loongson32: ls1c: Fix hang during startup x86/nospec: Fix i386 RSB stuffing usb: dwc3: qcom: fix use-after-free on runtime-PM wakeup USB: serial: ch341: fix disabled rx timer on older devices USB: serial: ch341: fix lost character on LCR updates usb: dwc3: fix PHY disable sequence sch_sfb: Also store skb len before calling child enqueue tcp: fix early ETIMEDOUT after spurious non-SACK RTO RDMA/mlx5: Set local port to one when accessing counters ipv6: sr: fix out-of-bounds read when setting HMAC data. i40e: Fix kernel crash during module removal tipc: fix shift wrapping bug in map_get() sch_sfb: Don't assume the skb is still around after enqueueing to child netfilter: nf_conntrack_irc: Fix forged IP logic netfilter: br_netfilter: Drop dst references before setting. soc: brcmstb: pm-arm: Fix refcount leak and __iomem leak bugs scsi: mpt3sas: Fix use-after-free warning debugfs: add debugfs_lookup_and_remove() kprobes: Prohibit probes in gate area ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface() ALSA: aloop: Fix random zeros in capture data when using jiffies timer ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc() drm/amdgpu: mmVM_L2_CNTL3 register not initialized correctly fbdev: chipsfb: Add missing pci_disable_device() in chipsfb_pci_init() arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level parisc: Add runtime check to prevent PA2.0 kernels on PA1.x machines parisc: ccio-dma: Handle kmalloc failure in ccio_init_resources() drm/radeon: add a force flush to delay work when radeon drm/amdgpu: Check num_gfx_rings for gfx v9_0 rb setup. ALSA: seq: Fix data-race at module auto-loading ALSA: seq: oss: Fix data-race for max_midi_devs access net: mac802154: Fix a condition in the receive path wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected usb: gadget: mass_storage: Fix cdrom data transfers on MAC-OS USB: core: Prevent nested device-reset calls s390: fix nospec table alignments s390/hugetlb: fix prepare_hugepage_range() check for 2 GB hugepages usb-storage: Add ignore-residue quirk for NXP PN7462AU USB: cdc-acm: Add Icom PMR F3400 support (0c26:0020) usb: dwc2: fix wrong order of phy_power_on and phy_init usb: typec: altmodes/displayport: correct pin assignment for UFP receptacles USB: serial: option: add support for Cinterion MV32-WA/WB RmNet mode USB: serial: option: add Quectel EM060K modem USB: serial: option: add support for OPPO R11 diag port USB: serial: cp210x: add Decagon UCA device id xhci: Add grace period after xHC start to prevent premature runtime suspend. thunderbolt: Use the actual buffer in tb_async_error() hwmon: (gpio-fan) Fix array out of bounds access Input: rk805-pwrkey - fix module autoloading clk: core: Fix runtime PM sequence in clk_core_unprepare() Revert "clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops" clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops drm/i915/reg: Fix spelling mistake "Unsupport" -> "Unsupported" binder: fix UAF of ref->proc caused by race condition USB: serial: ftdi_sio: add Omron CS1W-CIF31 device id vt: Clear selection before changing the font staging: rtl8712: fix use after free bugs serial: fsl_lpuart: RS485 RTS polariy is inverse net/smc: Remove redundant refcount increase Revert "sch_cake: Return __NET_XMIT_STOLEN when consuming enqueued skb" tcp: annotate data-race around challenge_timestamp sch_cake: Return __NET_XMIT_STOLEN when consuming enqueued skb kcm: fix strp_init() order and cleanup ethernet: rocker: fix sleep in atomic context bug in neigh_timer_handler Revert "xhci: turn off port power in shutdown" wifi: cfg80211: debugfs: fix return type in ht40allow_map_read() ieee802154/adf7242: defer destroy_workqueue call platform/x86: pmc_atom: Fix SLP_TYPx bitfield mask drm/msm/dsi: Fix number of regulators for msm8996_dsi_cfg drm/msm/dsi: fix the inconsistent indenting net: dp83822: disable false carrier interrupt Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()" fs: only do a memory barrier for the first set_buffer_uptodate() wifi: iwlegacy: 4965: corrected fix for potential off-by-one overflow in il4965_rs_fill_link_cmd() efi: capsule-loader: Fix use-after-free in efi_capsule_write driver core: Don't probe devices after bus_type.match() probe deferral Linux 4.19.257 net: neigh: don't call kfree_skb() under spin_lock_irqsave() kprobes: don't call disarm_kprobe() for disabled kprobes netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y s390/hypfs: avoid error message under KVM neigh: fix possible DoS due to net iface start/stop loop drm/amd/display: clear optc underflow before turn off odm clock mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead fbdev: fb_pm2fb: Avoid potential divide by zero error HID: hidraw: fix memory leak in hidraw_release() media: pvrusb2: fix memory leak in pvr_probe HID: steam: Prevent NULL pointer dereference in steam_{recv,send}_report Bluetooth: L2CAP: Fix build errors in some archs kbuild: Fix include path in scripts/Makefile.modpost x86/bugs: Add "unknown" reporting for MMIO Stale Data s390/mm: do not trigger write fault when vma does not allow VM_WRITE selftests/bpf: Fix test_align verifier log patterns bpf: Fix the off-by-two error in range markings arm64: map FDT as RW for early_init_dt_scan() mm: Force TLB flush for PFNMAP mappings before unlink_file_vma() scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq md: call __md_stop_writes in md_stop mm/hugetlb: fix hugetlb not supporting softdirty tracking s390: fix double free of GS and RI CBs on fork() failure asm-generic: sections: refactor memory_intersects loop: Check for overflow while configuring loop x86/unwind/orc: Unwind ftrace trampolines with correct ORC entry btrfs: check if root is readonly while setting security xattr ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter net: Fix a data-race around sysctl_somaxconn. net: Fix a data-race around netdev_budget_usecs. net: Fix a data-race around netdev_budget. net: Fix a data-race around sysctl_net_busy_read. net: Fix a data-race around sysctl_net_busy_poll. net: Fix a data-race around sysctl_tstamp_allow_data. ratelimit: Fix data-races in ___ratelimit(). net: Fix data-races around netdev_tstamp_prequeue. net: Fix data-races around weight_p and dev_weight_[rt]x_bias. netfilter: nft_tunnel: restrict it to netdev family netfilter: nft_osf: restrict osf to ipv4, ipv6 and inet families netfilter: nft_payload: do not truncate csum_offset and csum_type netfilter: nft_payload: report ERANGE for too long offset and length netfilter: ebtables: reject blobs that don't provide all entry points net: ipvtap - add __init/__exit annotations to module init/exit funcs bonding: 802.3ad: fix no transmission of LACPDUs rose: check NULL rose_loopback_neigh->loopback af_key: Do not call xfrm_probe_algs in parallel xfrm: fix refcount leak in __xfrm_policy_check() kernel/sched: Remove dl_boosted flag comment sched/deadline: Fix priority inheritance with multiple scheduling classes sched/deadline: Fix stale throttling on de-/boosted tasks sched/deadline: Unthrottle PI boosted threads while enqueuing pinctrl: amd: Don't save/restore interrupt status and wake status bits kernel/sys_ni: add compat entry for fadvise64_64 parisc: Fix exception handler for fldw and fstw instructions audit: fix potential double free on error path from fsnotify_add_inode_mark Linux 4.19.256 btrfs: raid56: don't trust any cached sector in __raid56_parity_recover() btrfs: only write the sectors in the vertical stripe which has data stripes tracing/probes: Have kprobes and uprobes use $COMM too tee: add overflow check in register_shm_helper() MIPS: tlbex: Explicitly compare _PAGE_NO_EXEC against 0 video: fbdev: i740fb: Check the argument of i740_calc_vclk() powerpc/64: Init jump labels before parse_early_param() smb3: check xattr value length earlier f2fs: fix to avoid use f2fs_bug_on() in f2fs_new_node_page() ALSA: timer: Use deferred fasync helper ALSA: core: Add async signal helpers watchdog: export lockup_detector_reconfigure RISC-V: Add fast call path of crash_kexec() riscv: mmap with PROT_WRITE but no PROT_READ is invalid mips: cavium-octeon: Fix missing of_node_put() in octeon2_usb_clocks_start vfio: Clear the caps->buf to NULL after free tty: serial: Fix refcount leak bug in ucc_uart.c lib/list_debug.c: Detect uninitialized lists ext4: avoid resizing to a partial cluster size ext4: avoid remove directory when directory is corrupted drivers:md:fix a potential use-after-free bug dmaengine: sprd: Cleanup in .remove() after pm_runtime_get_sync() failed cxl: Fix a memory leak in an error handling path gadgetfs: ep_io - wait until IRQ finishes clk: qcom: ipq8074: dont disable gcc_sleep_clk_src vboxguest: Do not use devm for irq usb: renesas: Fix refcount leak bug usb: host: ohci-ppc-of: Fix refcount leak bug irqchip/tegra: Fix overflow implicit truncation warnings PCI: Add ACS quirk for Broadcom BCM5750x NICs drm/meson: Fix refcount bugs in meson_vpu_has_available_connectors() locking/atomic: Make test_and_*_bit() ordered on failure gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file igb: Add lock to avoid data race fec: Fix timer capture timing in `fec_ptp_enable_pps()` i40e: Fix to stop tx_timeout recovery if GLOBR fails powerpc/pci: Fix get_phb_number() locking netfilter: nf_tables: really skip inactive sets when allocating name nios2: add force_successful_syscall_return() nios2: restarts apply only to the first sigframe we build... nios2: fix syscall restart checks nios2: traced syscall does need to check the syscall number nios2: don't leave NULLs in sys_call_table[] nios2: page fault et.al. are *not* restartable syscalls... atm: idt77252: fix use-after-free bugs caused by tst_timer xen/xenbus: fix return type in xenbus_file_read() NTB: ntb_tool: uninitialized heap data in tool_fn_write() tools build: Switch to new openssl API for test-libcrypto vsock: Set socket state back to SS_UNCONNECTED in vsock_connect_timeout() vsock: Fix memory leak in vsock_connect() geneve: do not use RT_TOS for IPv6 flowlabel ACPI: property: Return type of acpi_add_nondev_subnodes() should be bool pinctrl: qcom: msm8916: Allow CAMSS GP clocks to be muxed pinctrl: nomadik: Fix refcount leak in nmk_pinctrl_dt_subnode_to_map SUNRPC: Reinitialise the backchannel request buffers before reuse NFSv4/pnfs: Fix a use-after-free bug in open NFSv4.1: RECLAIM_COMPLETE must handle EACCES NFSv4: Fix races in the legacy idmapper upcall apparmor: Fix memleak in aa_simple_write_to_buffer() apparmor: fix reference count leak in aa_pivotroot() apparmor: fix overlapping attachment computation apparmor: fix aa_label_asxprint return check apparmor: Fix failed mount permission check error message apparmor: fix absroot causing audited secids to begin with = apparmor: fix quiet_denied for file rules can: ems_usb: fix clang's -Wunaligned-access warning tracing: Have filter accept "common_cpu" to be consistent btrfs: fix lost error handling when looking up extended ref on log replay mmc: pxamci: Fix an error handling path in pxamci_probe() mmc: pxamci: Fix another error handling path in pxamci_probe() ata: libata-eh: Add missing command name rds: add missing barrier to release_refill ALSA: info: Fix llseek return value when using callback powerpc/ptdump: Fix display of RW pages on FSL_BOOK3E powerpc/mm: Split dump_pagelinuxtables flag_array table firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails net_sched: cls_route: disallow handle of 0 net/9p: Initialize the iounit field during fid creation Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression Revert "net: usb: ax88179_178a needs FLAG_SEND_ZLP" scsi: sg: Allow waiting for commands to complete on removed device tcp: fix over estimation in sk_forced_mem_schedule() KVM: x86: Avoid theoretical NULL pointer dereference in kvm_irq_delivery_to_apic_fast() KVM: x86: Check lapic_in_kernel() before attempting to set a SynIC irq KVM: Add infrastructure and macro to mark VM as bugged btrfs: reject log replay if there is unsupported RO compat flag net_sched: cls_route: remove from list when handle is 0 ACPI: CPPC: Do not prevent CPPC from working in the future dm writecache: set a default MAX_WRITEBACK_JOBS dm raid: fix address sanitizer warning in raid_status dm raid: fix address sanitizer warning in raid_resume intel_th: pci: Add Meteor Lake-P support intel_th: pci: Add Raptor Lake-S PCH support intel_th: pci: Add Raptor Lake-S CPU support ext4: correct the misjudgment in ext4_iget_extra_inode ext4: correct max_inline_xattr_value_size computing ext4: fix extent status tree race in writeback error recovery path ext4: update s_overhead_clusters in the superblock during an on-line resize ext4: fix use-after-free in ext4_xattr_set_entry ext4: make sure ext4_append() always allocates new block ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h spmi: trace: fix stack-out-of-bound access in SPMI tracing functions x86/olpc: fix 'logical not is only applied to the left hand side' scsi: zfcp: Fix missing auto port scan and thus missing target ports video: fbdev: s3fb: Check the size of screen before memset_io() video: fbdev: arkfb: Check the size of screen before memset_io() video: fbdev: vt8623fb: Check the size of screen before memset_io() tools/thermal: Fix possible path truncations video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock() x86/numa: Use cpumask_available instead of hardcoded NULL check scripts/faddr2line: Fix vmlinux detection on arm64 genelf: Use HAVE_LIBCRYPTO_SUPPORT, not the never defined HAVE_LIBCRYPTO powerpc/pci: Fix PHB numbering when using opal-phbid kprobes: Forbid probing on trampoline and BPF code areas powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address powerpc/xive: Fix refcount leak in xive_get_max_prio powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader powerpc/pci: Prefer PCI domain assignment via DT 'linux,pci-domain' and alias powerpc/32: Do not allow selection of e5500 or e6500 CPUs on PPC32 video: fbdev: sis: fix typos in SiS_GetModeID() video: fbdev: amba-clcd: Fix refcount leak bugs ASoC: qcom: q6dsp: Fix an off-by-one in q6adm_alloc_copp() s390/zcore: fix race when reading from hardware system area iommu/arm-smmu: qcom_iommu: Add of_node_put() when breaking out of loop mfd: t7l66xb: Drop platform disable callback kfifo: fix kfifo_to_user() return type rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge iommu/exynos: Handle failed IOMMU device registration properly tty: n_gsm: fix missing corner cases in gsmld_poll() tty: n_gsm: fix DM command tty: n_gsm: fix wrong T1 retry count handling vfio/ccw: Do not change FSM state in subchannel event remoteproc: qcom: wcnss: Fix handling of IRQs tty: n_gsm: fix race condition in gsmld_write() tty: n_gsm: fix packet re-transmission without open control channel tty: n_gsm: fix non flow control frames during mux flow off profiling: fix shift too large makes kernel panic serial: 8250_dw: Store LSR into lsr_saved_flags in dw8250_tx_wait_empty() ASoC: mediatek: mt8173-rt5650: Fix refcount leak in mt8173_rt5650_dev_probe ASoC: codecs: da7210: add check for i2c_add_driver ASoC: mt6797-mt6351: Fix refcount leak in mt6797_mt6351_dev_probe ASoC: mediatek: mt8173: Fix refcount leak in mt8173_rt5650_rt5676_dev_probe jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted ext4: recover csum seed of tmp_inode after migrating to extents null_blk: fix ida error handling in null_add_dev() RDMA/rxe: Fix error unwind in rxe_create_qp() mm/mmap.c: fix missing call to vm_unacct_memory in mmap_region platform/olpc: Fix uninitialized data in debugfs write USB: serial: fix tty-port initialized comments HID: alps: Declare U1_UNICORN_LEGACY support mmc: cavium-thunderx: Add of_node_put() when breaking out of loop mmc: cavium-octeon: Add of_node_put() when breaking out of loop gpio: gpiolib-of: Fix refcount bugs in of_mm_gpiochip_add_data() RDMA/hfi1: fix potential memory leak in setup_base_ctxt() usb: gadget: udc: amd5536 depends on HAS_DMA scsi: smartpqi: Fix DMA direction for RAID requests mmc: sdhci-of-at91: fix set_uhs_signaling rewriting of MC1R memstick/ms_block: Fix a memory leak memstick/ms_block: Fix some incorrect memory allocation mmc: sdhci-of-esdhc: Fix refcount leak in esdhc_signal_voltage_switch staging: rtl8192u: Fix sleep in atomic context bug in dm_fsync_timer_callback soundwire: bus_type: fix remove and shutdown support clk: qcom: ipq8074: set BRANCH_HALT_DELAY flag for UBI clocks clk: qcom: ipq8074: fix NSS port frequency tables misc: rtsx: Fix an error handling path in rtsx_pci_probe() usb: ohci-nxp: Fix refcount leak in ohci_hcd_nxp_probe usb: host: Fix refcount leak in ehci_hcd_ppc_of_probe fpga: altera-pr-ip: fix unsigned comparison with less than zero mtd: st_spi_fsm: Add a clk_disable_unprepare() in .probe()'s error path mtd: sm_ftl: Fix deadlock caused by cancel_work_sync in sm_release HID: cp2112: prevent a buffer overflow in cp2112_xfer() mtd: maps: Fix refcount leak in ap_flash_init mtd: maps: Fix refcount leak in of_flash_probe_versatile clk: renesas: r9a06g032: Fix UART clkgrp bitsel dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock net: rose: fix netdev reference changes netdevsim: Avoid allocation warnings triggered from user space net/mlx5e: Fix the value of MLX5E_MAX_RQ_NUM_MTTS wifi: libertas: Fix possible refcount leak in if_usb_probe() wifi: wil6210: debugfs: fix uninitialized variable use in `wil_write_file_wmi()` i2c: mux-gpmux: Add of_node_put() when breaking out of loop i2c: cadence: Support PEC for SMBus block read Bluetooth: hci_intel: Add check for platform_driver_register can: pch_can: pch_can_error(): initialize errc before using it can: error: specify the values of data[5..7] of CAN error frames can: usb_8dev: do not report txerr and rxerr during bus-off can: kvaser_usb_leaf: do not report txerr and rxerr during bus-off can: kvaser_usb_hydra: do not report txerr and rxerr during bus-off can: sun4i_can: do not report txerr and rxerr during bus-off can: hi311x: do not report txerr and rxerr during bus-off can: sja1000: do not report txerr and rxerr during bus-off can: rcar_can: do not report txerr and rxerr during bus-off can: pch_can: do not report txerr and rxerr during bus-off wifi: p54: add missing parentheses in p54_flush() wifi: p54: Fix an error handling path in p54spi_probe() selftests: timers: clocksource-switch: fix passing errors from child wifi: wil6210: debugfs: fix info leak in wil_write_file_wmi() selftests: timers: valid-adjtimex: build fix for newer toolchains fs: check FMODE_LSEEK to control internal pipe splicing libbpf: Fix the name of a reused map tcp: make retransmitted SKB fit into the send window mediatek: mt76: mac80211: Fix missing of_node_put() in mt76_led_init() media: platform: mtk-mdp: Fix mdp_ipi_comm structure alignment crypto: hisilicon - Kunpeng916 crypto driver don't sleep when in softirq Change-Id: I1a4bb33f07f7ac850e069a5ac664d668f42b377f Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com> Conflicts: drivers/usb/dwc3/core.c
1937 lines
56 KiB
C
1937 lines
56 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* xHCI host controller driver
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*
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* Copyright (C) 2008 Intel Corp.
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*
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* Author: Sarah Sharp
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* Some code borrowed from the Linux EHCI driver.
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*/
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#include <linux/gfp.h>
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#include <linux/slab.h>
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#include <asm/unaligned.h>
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#include "xhci.h"
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#include "xhci-trace.h"
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#define PORT_WAKE_BITS (PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E)
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#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \
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PORT_RC | PORT_PLC | PORT_PE)
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/* USB 3 BOS descriptor and a capability descriptors, combined.
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* Fields will be adjusted and added later in xhci_create_usb3_bos_desc()
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*/
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static u8 usb_bos_descriptor [] = {
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USB_DT_BOS_SIZE, /* __u8 bLength, 5 bytes */
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USB_DT_BOS, /* __u8 bDescriptorType */
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0x0F, 0x00, /* __le16 wTotalLength, 15 bytes */
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0x1, /* __u8 bNumDeviceCaps */
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/* First device capability, SuperSpeed */
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USB_DT_USB_SS_CAP_SIZE, /* __u8 bLength, 10 bytes */
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USB_DT_DEVICE_CAPABILITY, /* Device Capability */
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USB_SS_CAP_TYPE, /* bDevCapabilityType, SUPERSPEED_USB */
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0x00, /* bmAttributes, LTM off by default */
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USB_5GBPS_OPERATION, 0x00, /* wSpeedsSupported, 5Gbps only */
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0x03, /* bFunctionalitySupport,
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USB 3.0 speed only */
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0x00, /* bU1DevExitLat, set later. */
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0x00, 0x00, /* __le16 bU2DevExitLat, set later. */
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/* Second device capability, SuperSpeedPlus */
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0x1c, /* bLength 28, will be adjusted later */
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USB_DT_DEVICE_CAPABILITY, /* Device Capability */
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USB_SSP_CAP_TYPE, /* bDevCapabilityType SUPERSPEED_PLUS */
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0x00, /* bReserved 0 */
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0x23, 0x00, 0x00, 0x00, /* bmAttributes, SSAC=3 SSIC=1 */
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0x01, 0x00, /* wFunctionalitySupport */
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0x00, 0x00, /* wReserved 0 */
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/* Default Sublink Speed Attributes, overwrite if custom PSI exists */
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0x34, 0x00, 0x05, 0x00, /* 5Gbps, symmetric, rx, ID = 4 */
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0xb4, 0x00, 0x05, 0x00, /* 5Gbps, symmetric, tx, ID = 4 */
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0x35, 0x40, 0x0a, 0x00, /* 10Gbps, SSP, symmetric, rx, ID = 5 */
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0xb5, 0x40, 0x0a, 0x00, /* 10Gbps, SSP, symmetric, tx, ID = 5 */
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};
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static int xhci_create_usb3_bos_desc(struct xhci_hcd *xhci, char *buf,
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u16 wLength)
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{
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struct xhci_port_cap *port_cap = NULL;
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int i, ssa_count;
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u32 temp;
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u16 desc_size, ssp_cap_size, ssa_size = 0;
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bool usb3_1 = false;
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desc_size = USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
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ssp_cap_size = sizeof(usb_bos_descriptor) - desc_size;
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/* does xhci support USB 3.1 Enhanced SuperSpeed */
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for (i = 0; i < xhci->num_port_caps; i++) {
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if (xhci->port_caps[i].maj_rev == 0x03 &&
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xhci->port_caps[i].min_rev >= 0x01) {
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usb3_1 = true;
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port_cap = &xhci->port_caps[i];
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break;
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}
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}
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if (usb3_1) {
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/* does xhci provide a PSI table for SSA speed attributes? */
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if (port_cap->psi_count) {
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/* two SSA entries for each unique PSI ID, RX and TX */
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ssa_count = port_cap->psi_uid_count * 2;
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ssa_size = ssa_count * sizeof(u32);
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ssp_cap_size -= 16; /* skip copying the default SSA */
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}
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desc_size += ssp_cap_size;
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}
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memcpy(buf, &usb_bos_descriptor, min(desc_size, wLength));
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if (usb3_1) {
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/* modify bos descriptor bNumDeviceCaps and wTotalLength */
|
||
buf[4] += 1;
|
||
put_unaligned_le16(desc_size + ssa_size, &buf[2]);
|
||
}
|
||
|
||
if (wLength < USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE)
|
||
return wLength;
|
||
|
||
/* Indicate whether the host has LTM support. */
|
||
temp = readl(&xhci->cap_regs->hcc_params);
|
||
if (HCC_LTC(temp))
|
||
buf[8] |= USB_LTM_SUPPORT;
|
||
|
||
/* Set the U1 and U2 exit latencies. */
|
||
if ((xhci->quirks & XHCI_LPM_SUPPORT)) {
|
||
temp = readl(&xhci->cap_regs->hcs_params3);
|
||
buf[12] = HCS_U1_LATENCY(temp);
|
||
put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
|
||
}
|
||
|
||
/* If PSI table exists, add the custom speed attributes from it */
|
||
if (usb3_1 && port_cap->psi_count) {
|
||
u32 ssp_cap_base, bm_attrib, psi, psi_mant, psi_exp;
|
||
int offset;
|
||
|
||
ssp_cap_base = USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
|
||
|
||
if (wLength < desc_size)
|
||
return wLength;
|
||
buf[ssp_cap_base] = ssp_cap_size + ssa_size;
|
||
|
||
/* attribute count SSAC bits 4:0 and ID count SSIC bits 8:5 */
|
||
bm_attrib = (ssa_count - 1) & 0x1f;
|
||
bm_attrib |= (port_cap->psi_uid_count - 1) << 5;
|
||
put_unaligned_le32(bm_attrib, &buf[ssp_cap_base + 4]);
|
||
|
||
if (wLength < desc_size + ssa_size)
|
||
return wLength;
|
||
/*
|
||
* Create the Sublink Speed Attributes (SSA) array.
|
||
* The xhci PSI field and USB 3.1 SSA fields are very similar,
|
||
* but link type bits 7:6 differ for values 01b and 10b.
|
||
* xhci has also only one PSI entry for a symmetric link when
|
||
* USB 3.1 requires two SSA entries (RX and TX) for every link
|
||
*/
|
||
offset = desc_size;
|
||
for (i = 0; i < port_cap->psi_count; i++) {
|
||
psi = port_cap->psi[i];
|
||
psi &= ~USB_SSP_SUBLINK_SPEED_RSVD;
|
||
psi_exp = XHCI_EXT_PORT_PSIE(psi);
|
||
psi_mant = XHCI_EXT_PORT_PSIM(psi);
|
||
|
||
/* Shift to Gbps and set SSP Link BIT(14) if 10Gpbs */
|
||
for (; psi_exp < 3; psi_exp++)
|
||
psi_mant /= 1000;
|
||
if (psi_mant >= 10)
|
||
psi |= BIT(14);
|
||
|
||
if ((psi & PLT_MASK) == PLT_SYM) {
|
||
/* Symmetric, create SSA RX and TX from one PSI entry */
|
||
put_unaligned_le32(psi, &buf[offset]);
|
||
psi |= 1 << 7; /* turn entry to TX */
|
||
offset += 4;
|
||
if (offset >= desc_size + ssa_size)
|
||
return desc_size + ssa_size;
|
||
} else if ((psi & PLT_MASK) == PLT_ASYM_RX) {
|
||
/* Asymetric RX, flip bits 7:6 for SSA */
|
||
psi ^= PLT_MASK;
|
||
}
|
||
put_unaligned_le32(psi, &buf[offset]);
|
||
offset += 4;
|
||
if (offset >= desc_size + ssa_size)
|
||
return desc_size + ssa_size;
|
||
}
|
||
}
|
||
/* ssa_size is 0 for other than usb 3.1 hosts */
|
||
return desc_size + ssa_size;
|
||
}
|
||
|
||
static void xhci_common_hub_descriptor(struct xhci_hcd *xhci,
|
||
struct usb_hub_descriptor *desc, int ports)
|
||
{
|
||
u16 temp;
|
||
|
||
desc->bHubContrCurrent = 0;
|
||
|
||
desc->bNbrPorts = ports;
|
||
temp = 0;
|
||
/* Bits 1:0 - support per-port power switching, or power always on */
|
||
if (HCC_PPC(xhci->hcc_params))
|
||
temp |= HUB_CHAR_INDV_PORT_LPSM;
|
||
else
|
||
temp |= HUB_CHAR_NO_LPSM;
|
||
/* Bit 2 - root hubs are not part of a compound device */
|
||
/* Bits 4:3 - individual port over current protection */
|
||
temp |= HUB_CHAR_INDV_PORT_OCPM;
|
||
/* Bits 6:5 - no TTs in root ports */
|
||
/* Bit 7 - no port indicators */
|
||
desc->wHubCharacteristics = cpu_to_le16(temp);
|
||
}
|
||
|
||
/* Fill in the USB 2.0 roothub descriptor */
|
||
static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
|
||
struct usb_hub_descriptor *desc)
|
||
{
|
||
int ports;
|
||
u16 temp;
|
||
__u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8];
|
||
u32 portsc;
|
||
unsigned int i;
|
||
struct xhci_hub *rhub;
|
||
|
||
rhub = &xhci->usb2_rhub;
|
||
ports = rhub->num_ports;
|
||
xhci_common_hub_descriptor(xhci, desc, ports);
|
||
desc->bDescriptorType = USB_DT_HUB;
|
||
temp = 1 + (ports / 8);
|
||
desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp;
|
||
desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.8 says 20ms */
|
||
|
||
/* The Device Removable bits are reported on a byte granularity.
|
||
* If the port doesn't exist within that byte, the bit is set to 0.
|
||
*/
|
||
memset(port_removable, 0, sizeof(port_removable));
|
||
for (i = 0; i < ports; i++) {
|
||
portsc = readl(rhub->ports[i]->addr);
|
||
/* If a device is removable, PORTSC reports a 0, same as in the
|
||
* hub descriptor DeviceRemovable bits.
|
||
*/
|
||
if (portsc & PORT_DEV_REMOVE)
|
||
/* This math is hairy because bit 0 of DeviceRemovable
|
||
* is reserved, and bit 1 is for port 1, etc.
|
||
*/
|
||
port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8);
|
||
}
|
||
|
||
/* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN
|
||
* ports on it. The USB 2.0 specification says that there are two
|
||
* variable length fields at the end of the hub descriptor:
|
||
* DeviceRemovable and PortPwrCtrlMask. But since we can have less than
|
||
* USB_MAXCHILDREN ports, we may need to use the DeviceRemovable array
|
||
* to set PortPwrCtrlMask bits. PortPwrCtrlMask must always be set to
|
||
* 0xFF, so we initialize the both arrays (DeviceRemovable and
|
||
* PortPwrCtrlMask) to 0xFF. Then we set the DeviceRemovable for each
|
||
* set of ports that actually exist.
|
||
*/
|
||
memset(desc->u.hs.DeviceRemovable, 0xff,
|
||
sizeof(desc->u.hs.DeviceRemovable));
|
||
memset(desc->u.hs.PortPwrCtrlMask, 0xff,
|
||
sizeof(desc->u.hs.PortPwrCtrlMask));
|
||
|
||
for (i = 0; i < (ports + 1 + 7) / 8; i++)
|
||
memset(&desc->u.hs.DeviceRemovable[i], port_removable[i],
|
||
sizeof(__u8));
|
||
}
|
||
|
||
/* Fill in the USB 3.0 roothub descriptor */
|
||
static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
|
||
struct usb_hub_descriptor *desc)
|
||
{
|
||
int ports;
|
||
u16 port_removable;
|
||
u32 portsc;
|
||
unsigned int i;
|
||
struct xhci_hub *rhub;
|
||
|
||
rhub = &xhci->usb3_rhub;
|
||
ports = rhub->num_ports;
|
||
xhci_common_hub_descriptor(xhci, desc, ports);
|
||
desc->bDescriptorType = USB_DT_SS_HUB;
|
||
desc->bDescLength = USB_DT_SS_HUB_SIZE;
|
||
desc->bPwrOn2PwrGood = 50; /* usb 3.1 may fail if less than 100ms */
|
||
|
||
/* header decode latency should be zero for roothubs,
|
||
* see section 4.23.5.2.
|
||
*/
|
||
desc->u.ss.bHubHdrDecLat = 0;
|
||
desc->u.ss.wHubDelay = 0;
|
||
|
||
port_removable = 0;
|
||
/* bit 0 is reserved, bit 1 is for port 1, etc. */
|
||
for (i = 0; i < ports; i++) {
|
||
portsc = readl(rhub->ports[i]->addr);
|
||
if (portsc & PORT_DEV_REMOVE)
|
||
port_removable |= 1 << (i + 1);
|
||
}
|
||
|
||
desc->u.ss.DeviceRemovable = cpu_to_le16(port_removable);
|
||
}
|
||
|
||
static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
|
||
struct usb_hub_descriptor *desc)
|
||
{
|
||
|
||
if (hcd->speed >= HCD_USB3)
|
||
xhci_usb3_hub_descriptor(hcd, xhci, desc);
|
||
else
|
||
xhci_usb2_hub_descriptor(hcd, xhci, desc);
|
||
|
||
}
|
||
|
||
static unsigned int xhci_port_speed(unsigned int port_status)
|
||
{
|
||
if (DEV_LOWSPEED(port_status))
|
||
return USB_PORT_STAT_LOW_SPEED;
|
||
if (DEV_HIGHSPEED(port_status))
|
||
return USB_PORT_STAT_HIGH_SPEED;
|
||
/*
|
||
* FIXME: Yes, we should check for full speed, but the core uses that as
|
||
* a default in portspeed() in usb/core/hub.c (which is the only place
|
||
* USB_PORT_STAT_*_SPEED is used).
|
||
*/
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* These bits are Read Only (RO) and should be saved and written to the
|
||
* registers: 0, 3, 10:13, 30
|
||
* connect status, over-current status, port speed, and device removable.
|
||
* connect status and port speed are also sticky - meaning they're in
|
||
* the AUX well and they aren't changed by a hot, warm, or cold reset.
|
||
*/
|
||
#define XHCI_PORT_RO ((1<<0) | (1<<3) | (0xf<<10) | (1<<30))
|
||
/*
|
||
* These bits are RW; writing a 0 clears the bit, writing a 1 sets the bit:
|
||
* bits 5:8, 9, 14:15, 25:27
|
||
* link state, port power, port indicator state, "wake on" enable state
|
||
*/
|
||
#define XHCI_PORT_RWS ((0xf<<5) | (1<<9) | (0x3<<14) | (0x7<<25))
|
||
/*
|
||
* These bits are RW; writing a 1 sets the bit, writing a 0 has no effect:
|
||
* bit 4 (port reset)
|
||
*/
|
||
#define XHCI_PORT_RW1S ((1<<4))
|
||
/*
|
||
* These bits are RW; writing a 1 clears the bit, writing a 0 has no effect:
|
||
* bits 1, 17, 18, 19, 20, 21, 22, 23
|
||
* port enable/disable, and
|
||
* change bits: connect, PED, warm port reset changed (reserved zero for USB 2.0 ports),
|
||
* over-current, reset, link state, and L1 change
|
||
*/
|
||
#define XHCI_PORT_RW1CS ((1<<1) | (0x7f<<17))
|
||
/*
|
||
* Bit 16 is RW, and writing a '1' to it causes the link state control to be
|
||
* latched in
|
||
*/
|
||
#define XHCI_PORT_RW ((1<<16))
|
||
/*
|
||
* These bits are Reserved Zero (RsvdZ) and zero should be written to them:
|
||
* bits 2, 24, 28:31
|
||
*/
|
||
#define XHCI_PORT_RZ ((1<<2) | (1<<24) | (0xf<<28))
|
||
|
||
/*
|
||
* Given a port state, this function returns a value that would result in the
|
||
* port being in the same state, if the value was written to the port status
|
||
* control register.
|
||
* Save Read Only (RO) bits and save read/write bits where
|
||
* writing a 0 clears the bit and writing a 1 sets the bit (RWS).
|
||
* For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect.
|
||
*/
|
||
u32 xhci_port_state_to_neutral(u32 state)
|
||
{
|
||
/* Save read-only status and port state */
|
||
return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS);
|
||
}
|
||
|
||
/*
|
||
* find slot id based on port number.
|
||
* @port: The one-based port number from one of the two split roothubs.
|
||
*/
|
||
int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
|
||
u16 port)
|
||
{
|
||
int slot_id;
|
||
int i;
|
||
enum usb_device_speed speed;
|
||
|
||
slot_id = 0;
|
||
for (i = 0; i < MAX_HC_SLOTS; i++) {
|
||
if (!xhci->devs[i] || !xhci->devs[i]->udev)
|
||
continue;
|
||
speed = xhci->devs[i]->udev->speed;
|
||
if (((speed >= USB_SPEED_SUPER) == (hcd->speed >= HCD_USB3))
|
||
&& xhci->devs[i]->fake_port == port) {
|
||
slot_id = i;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return slot_id;
|
||
}
|
||
|
||
/*
|
||
* Stop device
|
||
* It issues stop endpoint command for EP 0 to 30. And wait the last command
|
||
* to complete.
|
||
* suspend will set to 1, if suspend bit need to set in command.
|
||
*/
|
||
static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend)
|
||
{
|
||
struct xhci_virt_device *virt_dev;
|
||
struct xhci_command *cmd;
|
||
unsigned long flags;
|
||
int ret;
|
||
int i;
|
||
|
||
ret = 0;
|
||
virt_dev = xhci->devs[slot_id];
|
||
if (!virt_dev)
|
||
return -ENODEV;
|
||
|
||
trace_xhci_stop_device(virt_dev);
|
||
|
||
cmd = xhci_alloc_command(xhci, true, GFP_NOIO);
|
||
if (!cmd)
|
||
return -ENOMEM;
|
||
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
for (i = LAST_EP_INDEX; i > 0; i--) {
|
||
if (virt_dev->eps[i].ring && virt_dev->eps[i].ring->dequeue) {
|
||
struct xhci_ep_ctx *ep_ctx;
|
||
struct xhci_command *command;
|
||
|
||
ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->out_ctx, i);
|
||
|
||
/* Check ep is running, required by AMD SNPS 3.1 xHC */
|
||
if (GET_EP_CTX_STATE(ep_ctx) != EP_STATE_RUNNING)
|
||
continue;
|
||
|
||
command = xhci_alloc_command(xhci, false, GFP_NOWAIT);
|
||
if (!command) {
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
ret = -ENOMEM;
|
||
goto cmd_cleanup;
|
||
}
|
||
|
||
ret = xhci_queue_stop_endpoint(xhci, command, slot_id,
|
||
i, suspend);
|
||
if (ret) {
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
xhci_free_command(xhci, command);
|
||
goto cmd_cleanup;
|
||
}
|
||
}
|
||
}
|
||
ret = xhci_queue_stop_endpoint(xhci, cmd, slot_id, 0, suspend);
|
||
if (ret) {
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
goto cmd_cleanup;
|
||
}
|
||
|
||
xhci_ring_cmd_db(xhci);
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
|
||
/* Wait for last stop endpoint command to finish */
|
||
wait_for_completion(cmd->completion);
|
||
|
||
if (cmd->status == COMP_COMMAND_ABORTED ||
|
||
cmd->status == COMP_COMMAND_RING_STOPPED) {
|
||
xhci_warn(xhci, "Timeout while waiting for stop endpoint command\n");
|
||
ret = -ETIME;
|
||
}
|
||
|
||
cmd_cleanup:
|
||
xhci_free_command(xhci, cmd);
|
||
return ret;
|
||
}
|
||
|
||
/*
|
||
* Ring device, it rings the all doorbells unconditionally.
|
||
*/
|
||
void xhci_ring_device(struct xhci_hcd *xhci, int slot_id)
|
||
{
|
||
int i, s;
|
||
struct xhci_virt_ep *ep;
|
||
|
||
for (i = 0; i < LAST_EP_INDEX + 1; i++) {
|
||
ep = &xhci->devs[slot_id]->eps[i];
|
||
|
||
if (ep->ep_state & EP_HAS_STREAMS) {
|
||
for (s = 1; s < ep->stream_info->num_streams; s++)
|
||
xhci_ring_ep_doorbell(xhci, slot_id, i, s);
|
||
} else if (ep->ring && ep->ring->dequeue) {
|
||
xhci_ring_ep_doorbell(xhci, slot_id, i, 0);
|
||
}
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
|
||
u16 wIndex, __le32 __iomem *addr, u32 port_status)
|
||
{
|
||
/* Don't allow the USB core to disable SuperSpeed ports. */
|
||
if (hcd->speed >= HCD_USB3) {
|
||
xhci_dbg(xhci, "Ignoring request to disable "
|
||
"SuperSpeed port.\n");
|
||
return;
|
||
}
|
||
|
||
if (xhci->quirks & XHCI_BROKEN_PORT_PED) {
|
||
xhci_dbg(xhci,
|
||
"Broken Port Enabled/Disabled, ignoring port disable request.\n");
|
||
return;
|
||
}
|
||
|
||
/* Write 1 to disable the port */
|
||
writel(port_status | PORT_PE, addr);
|
||
port_status = readl(addr);
|
||
xhci_dbg(xhci, "disable port, actual port %d status = 0x%x\n",
|
||
wIndex, port_status);
|
||
}
|
||
|
||
static void xhci_clear_port_change_bit(struct xhci_hcd *xhci, u16 wValue,
|
||
u16 wIndex, __le32 __iomem *addr, u32 port_status)
|
||
{
|
||
char *port_change_bit;
|
||
u32 status;
|
||
|
||
switch (wValue) {
|
||
case USB_PORT_FEAT_C_RESET:
|
||
status = PORT_RC;
|
||
port_change_bit = "reset";
|
||
break;
|
||
case USB_PORT_FEAT_C_BH_PORT_RESET:
|
||
status = PORT_WRC;
|
||
port_change_bit = "warm(BH) reset";
|
||
break;
|
||
case USB_PORT_FEAT_C_CONNECTION:
|
||
status = PORT_CSC;
|
||
port_change_bit = "connect";
|
||
break;
|
||
case USB_PORT_FEAT_C_OVER_CURRENT:
|
||
status = PORT_OCC;
|
||
port_change_bit = "over-current";
|
||
break;
|
||
case USB_PORT_FEAT_C_ENABLE:
|
||
status = PORT_PEC;
|
||
port_change_bit = "enable/disable";
|
||
break;
|
||
case USB_PORT_FEAT_C_SUSPEND:
|
||
status = PORT_PLC;
|
||
port_change_bit = "suspend/resume";
|
||
break;
|
||
case USB_PORT_FEAT_C_PORT_LINK_STATE:
|
||
status = PORT_PLC;
|
||
port_change_bit = "link state";
|
||
break;
|
||
case USB_PORT_FEAT_C_PORT_CONFIG_ERROR:
|
||
status = PORT_CEC;
|
||
port_change_bit = "config error";
|
||
break;
|
||
default:
|
||
/* Should never happen */
|
||
return;
|
||
}
|
||
/* Change bits are all write 1 to clear */
|
||
writel(port_status | status, addr);
|
||
port_status = readl(addr);
|
||
xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n",
|
||
port_change_bit, wIndex, port_status);
|
||
}
|
||
|
||
struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd)
|
||
{
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
|
||
if (hcd->speed >= HCD_USB3)
|
||
return &xhci->usb3_rhub;
|
||
return &xhci->usb2_rhub;
|
||
}
|
||
|
||
/*
|
||
* xhci_set_port_power() must be called with xhci->lock held.
|
||
* It will release and re-aquire the lock while calling ACPI
|
||
* method.
|
||
*/
|
||
static void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd,
|
||
u16 index, bool on, unsigned long *flags)
|
||
{
|
||
struct xhci_hub *rhub;
|
||
struct xhci_port *port;
|
||
u32 temp;
|
||
|
||
rhub = xhci_get_rhub(hcd);
|
||
port = rhub->ports[index];
|
||
temp = readl(port->addr);
|
||
temp = xhci_port_state_to_neutral(temp);
|
||
if (on) {
|
||
/* Power on */
|
||
writel(temp | PORT_POWER, port->addr);
|
||
temp = readl(port->addr);
|
||
xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n",
|
||
index, temp);
|
||
} else {
|
||
/* Power off */
|
||
writel(temp & ~PORT_POWER, port->addr);
|
||
}
|
||
|
||
spin_unlock_irqrestore(&xhci->lock, *flags);
|
||
temp = usb_acpi_power_manageable(hcd->self.root_hub,
|
||
index);
|
||
if (temp)
|
||
usb_acpi_set_power_state(hcd->self.root_hub,
|
||
index, on);
|
||
spin_lock_irqsave(&xhci->lock, *flags);
|
||
}
|
||
|
||
static void xhci_port_set_test_mode(struct xhci_hcd *xhci,
|
||
u16 test_mode, u16 wIndex)
|
||
{
|
||
u32 temp;
|
||
struct xhci_port *port;
|
||
|
||
/* xhci only supports test mode for usb2 ports */
|
||
port = xhci->usb2_rhub.ports[wIndex];
|
||
temp = readl(port->addr + PORTPMSC);
|
||
temp |= test_mode << PORT_TEST_MODE_SHIFT;
|
||
writel(temp, port->addr + PORTPMSC);
|
||
xhci->test_mode = test_mode;
|
||
if (test_mode == TEST_FORCE_EN)
|
||
xhci_start(xhci);
|
||
}
|
||
|
||
static int xhci_enter_test_mode(struct xhci_hcd *xhci,
|
||
u16 test_mode, u16 wIndex, unsigned long *flags)
|
||
{
|
||
int i, retval;
|
||
|
||
/* Disable all Device Slots */
|
||
xhci_dbg(xhci, "Disable all slots\n");
|
||
spin_unlock_irqrestore(&xhci->lock, *flags);
|
||
for (i = 1; i <= HCS_MAX_SLOTS(xhci->hcs_params1); i++) {
|
||
if (!xhci->devs[i])
|
||
continue;
|
||
|
||
retval = xhci_disable_slot(xhci, i);
|
||
xhci_free_virt_device(xhci, i);
|
||
if (retval)
|
||
xhci_err(xhci, "Failed to disable slot %d, %d. Enter test mode anyway\n",
|
||
i, retval);
|
||
}
|
||
spin_lock_irqsave(&xhci->lock, *flags);
|
||
/* Put all ports to the Disable state by clear PP */
|
||
xhci_dbg(xhci, "Disable all port (PP = 0)\n");
|
||
/* Power off USB3 ports*/
|
||
for (i = 0; i < xhci->usb3_rhub.num_ports; i++)
|
||
xhci_set_port_power(xhci, xhci->shared_hcd, i, false, flags);
|
||
/* Power off USB2 ports*/
|
||
for (i = 0; i < xhci->usb2_rhub.num_ports; i++)
|
||
xhci_set_port_power(xhci, xhci->main_hcd, i, false, flags);
|
||
/* Stop the controller */
|
||
xhci_dbg(xhci, "Stop controller\n");
|
||
retval = xhci_halt(xhci);
|
||
if (retval)
|
||
return retval;
|
||
/* Disable runtime PM for test mode */
|
||
pm_runtime_forbid(xhci_to_hcd(xhci)->self.controller);
|
||
/* Set PORTPMSC.PTC field to enter selected test mode */
|
||
/* Port is selected by wIndex. port_id = wIndex + 1 */
|
||
xhci_dbg(xhci, "Enter Test Mode: %d, Port_id=%d\n",
|
||
test_mode, wIndex + 1);
|
||
xhci_port_set_test_mode(xhci, test_mode, wIndex);
|
||
return retval;
|
||
}
|
||
|
||
static int xhci_exit_test_mode(struct xhci_hcd *xhci)
|
||
{
|
||
int retval;
|
||
|
||
if (!xhci->test_mode) {
|
||
xhci_err(xhci, "Not in test mode, do nothing.\n");
|
||
return 0;
|
||
}
|
||
if (xhci->test_mode == TEST_FORCE_EN &&
|
||
!(xhci->xhc_state & XHCI_STATE_HALTED)) {
|
||
retval = xhci_halt(xhci);
|
||
if (retval)
|
||
return retval;
|
||
}
|
||
pm_runtime_allow(xhci_to_hcd(xhci)->self.controller);
|
||
xhci->test_mode = 0;
|
||
return xhci_reset(xhci, XHCI_RESET_SHORT_USEC);
|
||
}
|
||
|
||
void xhci_set_link_state(struct xhci_hcd *xhci, struct xhci_port *port,
|
||
u32 link_state)
|
||
{
|
||
u32 temp;
|
||
|
||
temp = readl(port->addr);
|
||
temp = xhci_port_state_to_neutral(temp);
|
||
temp &= ~PORT_PLS_MASK;
|
||
temp |= PORT_LINK_STROBE | link_state;
|
||
writel(temp, port->addr);
|
||
}
|
||
|
||
static void xhci_set_remote_wake_mask(struct xhci_hcd *xhci,
|
||
struct xhci_port *port, u16 wake_mask)
|
||
{
|
||
u32 temp;
|
||
|
||
temp = readl(port->addr);
|
||
temp = xhci_port_state_to_neutral(temp);
|
||
|
||
if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_CONNECT)
|
||
temp |= PORT_WKCONN_E;
|
||
else
|
||
temp &= ~PORT_WKCONN_E;
|
||
|
||
if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_DISCONNECT)
|
||
temp |= PORT_WKDISC_E;
|
||
else
|
||
temp &= ~PORT_WKDISC_E;
|
||
|
||
if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_OVER_CURRENT)
|
||
temp |= PORT_WKOC_E;
|
||
else
|
||
temp &= ~PORT_WKOC_E;
|
||
|
||
writel(temp, port->addr);
|
||
}
|
||
|
||
/* Test and clear port RWC bit */
|
||
void xhci_test_and_clear_bit(struct xhci_hcd *xhci, struct xhci_port *port,
|
||
u32 port_bit)
|
||
{
|
||
u32 temp;
|
||
|
||
temp = readl(port->addr);
|
||
if (temp & port_bit) {
|
||
temp = xhci_port_state_to_neutral(temp);
|
||
temp |= port_bit;
|
||
writel(temp, port->addr);
|
||
}
|
||
}
|
||
|
||
/* Updates Link Status for USB 2.1 port */
|
||
static void xhci_hub_report_usb2_link_state(u32 *status, u32 status_reg)
|
||
{
|
||
if ((status_reg & PORT_PLS_MASK) == XDEV_U2)
|
||
*status |= USB_PORT_STAT_L1;
|
||
}
|
||
|
||
/* Updates Link Status for super Speed port */
|
||
static void xhci_hub_report_usb3_link_state(struct xhci_hcd *xhci,
|
||
u32 *status, u32 status_reg)
|
||
{
|
||
u32 pls = status_reg & PORT_PLS_MASK;
|
||
|
||
/* When the CAS bit is set then warm reset
|
||
* should be performed on port
|
||
*/
|
||
if (status_reg & PORT_CAS) {
|
||
/* The CAS bit can be set while the port is
|
||
* in any link state.
|
||
* Only roothubs have CAS bit, so we
|
||
* pretend to be in compliance mode
|
||
* unless we're already in compliance
|
||
* or the inactive state.
|
||
*/
|
||
if (pls != USB_SS_PORT_LS_COMP_MOD &&
|
||
pls != USB_SS_PORT_LS_SS_INACTIVE) {
|
||
pls = USB_SS_PORT_LS_COMP_MOD;
|
||
}
|
||
/* Return also connection bit -
|
||
* hub state machine resets port
|
||
* when this bit is set.
|
||
*/
|
||
pls |= USB_PORT_STAT_CONNECTION;
|
||
} else {
|
||
/*
|
||
* Resume state is an xHCI internal state. Do not report it to
|
||
* usb core, instead, pretend to be U3, thus usb core knows
|
||
* it's not ready for transfer.
|
||
*/
|
||
if (pls == XDEV_RESUME) {
|
||
*status |= USB_SS_PORT_LS_U3;
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* If CAS bit isn't set but the Port is already at
|
||
* Compliance Mode, fake a connection so the USB core
|
||
* notices the Compliance state and resets the port.
|
||
* This resolves an issue generated by the SN65LVPE502CP
|
||
* in which sometimes the port enters compliance mode
|
||
* caused by a delay on the host-device negotiation.
|
||
*/
|
||
if ((xhci->quirks & XHCI_COMP_MODE_QUIRK) &&
|
||
(pls == USB_SS_PORT_LS_COMP_MOD))
|
||
pls |= USB_PORT_STAT_CONNECTION;
|
||
}
|
||
|
||
/* update status field */
|
||
*status |= pls;
|
||
}
|
||
|
||
/*
|
||
* Function for Compliance Mode Quirk.
|
||
*
|
||
* This Function verifies if all xhc USB3 ports have entered U0, if so,
|
||
* the compliance mode timer is deleted. A port won't enter
|
||
* compliance mode if it has previously entered U0.
|
||
*/
|
||
static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status,
|
||
u16 wIndex)
|
||
{
|
||
u32 all_ports_seen_u0 = ((1 << xhci->usb3_rhub.num_ports) - 1);
|
||
bool port_in_u0 = ((status & PORT_PLS_MASK) == XDEV_U0);
|
||
|
||
if (!(xhci->quirks & XHCI_COMP_MODE_QUIRK))
|
||
return;
|
||
|
||
if ((xhci->port_status_u0 != all_ports_seen_u0) && port_in_u0) {
|
||
xhci->port_status_u0 |= 1 << wIndex;
|
||
if (xhci->port_status_u0 == all_ports_seen_u0) {
|
||
del_timer_sync(&xhci->comp_mode_recovery_timer);
|
||
xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
|
||
"All USB3 ports have entered U0 already!");
|
||
xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
|
||
"Compliance Mode Recovery Timer Deleted.");
|
||
}
|
||
}
|
||
}
|
||
|
||
static u32 xhci_get_ext_port_status(u32 raw_port_status, u32 port_li)
|
||
{
|
||
u32 ext_stat = 0;
|
||
int speed_id;
|
||
|
||
/* only support rx and tx lane counts of 1 in usb3.1 spec */
|
||
speed_id = DEV_PORT_SPEED(raw_port_status);
|
||
ext_stat |= speed_id; /* bits 3:0, RX speed id */
|
||
ext_stat |= speed_id << 4; /* bits 7:4, TX speed id */
|
||
|
||
ext_stat |= PORT_RX_LANES(port_li) << 8; /* bits 11:8 Rx lane count */
|
||
ext_stat |= PORT_TX_LANES(port_li) << 12; /* bits 15:12 Tx lane count */
|
||
|
||
return ext_stat;
|
||
}
|
||
|
||
/*
|
||
* Converts a raw xHCI port status into the format that external USB 2.0 or USB
|
||
* 3.0 hubs use.
|
||
*
|
||
* Possible side effects:
|
||
* - Mark a port as being done with device resume,
|
||
* and ring the endpoint doorbells.
|
||
* - Stop the Synopsys redriver Compliance Mode polling.
|
||
* - Drop and reacquire the xHCI lock, in order to wait for port resume.
|
||
*/
|
||
static u32 xhci_get_port_status(struct usb_hcd *hcd,
|
||
struct xhci_bus_state *bus_state,
|
||
u16 wIndex, u32 raw_port_status,
|
||
unsigned long *flags)
|
||
__releases(&xhci->lock)
|
||
__acquires(&xhci->lock)
|
||
{
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
u32 status = 0;
|
||
int slot_id;
|
||
struct xhci_hub *rhub;
|
||
struct xhci_port *port;
|
||
|
||
rhub = xhci_get_rhub(hcd);
|
||
port = rhub->ports[wIndex];
|
||
|
||
/* wPortChange bits */
|
||
if (raw_port_status & PORT_CSC)
|
||
status |= USB_PORT_STAT_C_CONNECTION << 16;
|
||
if (raw_port_status & PORT_PEC)
|
||
status |= USB_PORT_STAT_C_ENABLE << 16;
|
||
if ((raw_port_status & PORT_OCC))
|
||
status |= USB_PORT_STAT_C_OVERCURRENT << 16;
|
||
if ((raw_port_status & PORT_RC))
|
||
status |= USB_PORT_STAT_C_RESET << 16;
|
||
/* USB3.0 only */
|
||
if (hcd->speed >= HCD_USB3) {
|
||
/* Port link change with port in resume state should not be
|
||
* reported to usbcore, as this is an internal state to be
|
||
* handled by xhci driver. Reporting PLC to usbcore may
|
||
* cause usbcore clearing PLC first and port change event
|
||
* irq won't be generated.
|
||
*/
|
||
if ((raw_port_status & PORT_PLC) &&
|
||
(raw_port_status & PORT_PLS_MASK) != XDEV_RESUME)
|
||
status |= USB_PORT_STAT_C_LINK_STATE << 16;
|
||
if ((raw_port_status & PORT_WRC))
|
||
status |= USB_PORT_STAT_C_BH_RESET << 16;
|
||
if ((raw_port_status & PORT_CEC))
|
||
status |= USB_PORT_STAT_C_CONFIG_ERROR << 16;
|
||
|
||
/* USB3 remote wake resume signaling completed */
|
||
if (bus_state->port_remote_wakeup & (1 << wIndex) &&
|
||
(raw_port_status & PORT_PLS_MASK) != XDEV_RESUME &&
|
||
(raw_port_status & PORT_PLS_MASK) != XDEV_RECOVERY) {
|
||
bus_state->port_remote_wakeup &= ~(1 << wIndex);
|
||
usb_hcd_end_port_resume(&hcd->self, wIndex);
|
||
}
|
||
}
|
||
|
||
if (hcd->speed < HCD_USB3) {
|
||
if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3
|
||
&& (raw_port_status & PORT_POWER))
|
||
status |= USB_PORT_STAT_SUSPEND;
|
||
}
|
||
if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME &&
|
||
!DEV_SUPERSPEED_ANY(raw_port_status) && hcd->speed < HCD_USB3) {
|
||
if ((raw_port_status & PORT_RESET) ||
|
||
!(raw_port_status & PORT_PE))
|
||
return 0xffffffff;
|
||
/* did port event handler already start resume timing? */
|
||
if (!bus_state->resume_done[wIndex]) {
|
||
/* If not, maybe we are in a host initated resume? */
|
||
if (test_bit(wIndex, &bus_state->resuming_ports)) {
|
||
/* Host initated resume doesn't time the resume
|
||
* signalling using resume_done[].
|
||
* It manually sets RESUME state, sleeps 20ms
|
||
* and sets U0 state. This should probably be
|
||
* changed, but not right now.
|
||
*/
|
||
} else {
|
||
/* port resume was discovered now and here,
|
||
* start resume timing
|
||
*/
|
||
unsigned long timeout = jiffies +
|
||
msecs_to_jiffies(USB_RESUME_TIMEOUT);
|
||
|
||
set_bit(wIndex, &bus_state->resuming_ports);
|
||
bus_state->resume_done[wIndex] = timeout;
|
||
mod_timer(&hcd->rh_timer, timeout);
|
||
usb_hcd_start_port_resume(&hcd->self, wIndex);
|
||
}
|
||
/* Has resume been signalled for USB_RESUME_TIME yet? */
|
||
} else if (time_after_eq(jiffies,
|
||
bus_state->resume_done[wIndex])) {
|
||
int time_left;
|
||
|
||
xhci_dbg(xhci, "Resume USB2 port %d\n",
|
||
wIndex + 1);
|
||
bus_state->resume_done[wIndex] = 0;
|
||
clear_bit(wIndex, &bus_state->resuming_ports);
|
||
|
||
set_bit(wIndex, &bus_state->rexit_ports);
|
||
|
||
xhci_test_and_clear_bit(xhci, port, PORT_PLC);
|
||
xhci_set_link_state(xhci, port, XDEV_U0);
|
||
|
||
spin_unlock_irqrestore(&xhci->lock, *flags);
|
||
time_left = wait_for_completion_timeout(
|
||
&bus_state->rexit_done[wIndex],
|
||
msecs_to_jiffies(
|
||
XHCI_MAX_REXIT_TIMEOUT_MS));
|
||
spin_lock_irqsave(&xhci->lock, *flags);
|
||
|
||
if (time_left) {
|
||
slot_id = xhci_find_slot_id_by_port(hcd,
|
||
xhci, wIndex + 1);
|
||
if (!slot_id) {
|
||
xhci_dbg(xhci, "slot_id is zero\n");
|
||
return 0xffffffff;
|
||
}
|
||
xhci_ring_device(xhci, slot_id);
|
||
} else {
|
||
int port_status = readl(port->addr);
|
||
xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n",
|
||
XHCI_MAX_REXIT_TIMEOUT_MS,
|
||
port_status);
|
||
status |= USB_PORT_STAT_SUSPEND;
|
||
clear_bit(wIndex, &bus_state->rexit_ports);
|
||
}
|
||
|
||
usb_hcd_end_port_resume(&hcd->self, wIndex);
|
||
bus_state->port_c_suspend |= 1 << wIndex;
|
||
bus_state->suspended_ports &= ~(1 << wIndex);
|
||
} else {
|
||
/*
|
||
* The resume has been signaling for less than
|
||
* USB_RESUME_TIME. Report the port status as SUSPEND,
|
||
* let the usbcore check port status again and clear
|
||
* resume signaling later.
|
||
*/
|
||
status |= USB_PORT_STAT_SUSPEND;
|
||
}
|
||
}
|
||
/*
|
||
* Clear stale usb2 resume signalling variables in case port changed
|
||
* state during resume signalling. For example on error
|
||
*/
|
||
if ((bus_state->resume_done[wIndex] ||
|
||
test_bit(wIndex, &bus_state->resuming_ports)) &&
|
||
(raw_port_status & PORT_PLS_MASK) != XDEV_U3 &&
|
||
(raw_port_status & PORT_PLS_MASK) != XDEV_RESUME) {
|
||
bus_state->resume_done[wIndex] = 0;
|
||
clear_bit(wIndex, &bus_state->resuming_ports);
|
||
usb_hcd_end_port_resume(&hcd->self, wIndex);
|
||
}
|
||
|
||
|
||
if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 &&
|
||
(raw_port_status & PORT_POWER)) {
|
||
if (bus_state->suspended_ports & (1 << wIndex)) {
|
||
bus_state->suspended_ports &= ~(1 << wIndex);
|
||
if (hcd->speed < HCD_USB3)
|
||
bus_state->port_c_suspend |= 1 << wIndex;
|
||
}
|
||
bus_state->resume_done[wIndex] = 0;
|
||
clear_bit(wIndex, &bus_state->resuming_ports);
|
||
}
|
||
if (raw_port_status & PORT_CONNECT) {
|
||
status |= USB_PORT_STAT_CONNECTION;
|
||
status |= xhci_port_speed(raw_port_status);
|
||
}
|
||
if (raw_port_status & PORT_PE)
|
||
status |= USB_PORT_STAT_ENABLE;
|
||
if (raw_port_status & PORT_OC)
|
||
status |= USB_PORT_STAT_OVERCURRENT;
|
||
if (raw_port_status & PORT_RESET)
|
||
status |= USB_PORT_STAT_RESET;
|
||
if (raw_port_status & PORT_POWER) {
|
||
if (hcd->speed >= HCD_USB3)
|
||
status |= USB_SS_PORT_STAT_POWER;
|
||
else
|
||
status |= USB_PORT_STAT_POWER;
|
||
}
|
||
/* Update Port Link State */
|
||
if (hcd->speed >= HCD_USB3) {
|
||
xhci_hub_report_usb3_link_state(xhci, &status, raw_port_status);
|
||
/*
|
||
* Verify if all USB3 Ports Have entered U0 already.
|
||
* Delete Compliance Mode Timer if so.
|
||
*/
|
||
xhci_del_comp_mod_timer(xhci, raw_port_status, wIndex);
|
||
} else {
|
||
xhci_hub_report_usb2_link_state(&status, raw_port_status);
|
||
}
|
||
if (bus_state->port_c_suspend & (1 << wIndex))
|
||
status |= USB_PORT_STAT_C_SUSPEND << 16;
|
||
|
||
return status;
|
||
}
|
||
|
||
static void xhci_single_step_completion(struct urb *urb)
|
||
{
|
||
struct completion *done = urb->context;
|
||
|
||
complete(done);
|
||
}
|
||
|
||
/*
|
||
* Allocate a URB and initialize the various fields of it.
|
||
* This API is used by the single_step_set_feature test of
|
||
* EHSET where IN packet of the GetDescriptor request is
|
||
* sent 15secs after the SETUP packet.
|
||
* Return NULL if failed.
|
||
*/
|
||
static struct urb *xhci_request_single_step_set_feature_urb(
|
||
struct usb_device *udev,
|
||
void *dr,
|
||
void *buf,
|
||
struct completion *done)
|
||
{
|
||
struct urb *urb;
|
||
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
|
||
struct usb_host_endpoint *ep;
|
||
|
||
urb = usb_alloc_urb(0, GFP_KERNEL);
|
||
if (!urb)
|
||
return NULL;
|
||
|
||
urb->pipe = usb_rcvctrlpipe(udev, 0);
|
||
ep = udev->ep_in[usb_pipeendpoint(urb->pipe)];
|
||
if (!ep) {
|
||
usb_free_urb(urb);
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
* Initialize the various URB fields as these are used by the HCD
|
||
* driver to queue it and as well as when completion happens.
|
||
*/
|
||
urb->ep = ep;
|
||
urb->dev = udev;
|
||
urb->setup_packet = dr;
|
||
urb->transfer_buffer = buf;
|
||
urb->transfer_buffer_length = USB_DT_DEVICE_SIZE;
|
||
urb->complete = xhci_single_step_completion;
|
||
urb->status = -EINPROGRESS;
|
||
urb->actual_length = 0;
|
||
urb->transfer_flags = URB_DIR_IN;
|
||
usb_get_urb(urb);
|
||
atomic_inc(&urb->use_count);
|
||
atomic_inc(&urb->dev->urbnum);
|
||
usb_hcd_map_urb_for_dma(hcd, urb, GFP_KERNEL);
|
||
urb->context = done;
|
||
return urb;
|
||
}
|
||
|
||
/*
|
||
* This function implements the USB_PORT_FEAT_TEST handling of the
|
||
* SINGLE_STEP_SET_FEATURE test mode as defined in the Embedded
|
||
* High-Speed Electrical Test (EHSET) specification. This simply
|
||
* issues a GetDescriptor control transfer, with an inserted 15-second
|
||
* delay after the end of the SETUP stage and before the IN token of
|
||
* the DATA stage is set. The idea is that this gives the test operator
|
||
* enough time to configure the oscilloscope to perform a measurement
|
||
* of the response time between the DATA and ACK packets that follow.
|
||
*/
|
||
static int xhci_ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
|
||
{
|
||
int retval;
|
||
struct usb_ctrlrequest *dr;
|
||
struct urb *urb;
|
||
struct usb_device *udev;
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
struct usb_device_descriptor *buf;
|
||
unsigned long flags;
|
||
DECLARE_COMPLETION_ONSTACK(done);
|
||
|
||
/* Obtain udev of the rhub's child port */
|
||
udev = usb_hub_find_child(hcd->self.root_hub, port);
|
||
if (!udev) {
|
||
xhci_err(xhci, "No device attached to the RootHub\n");
|
||
return -ENODEV;
|
||
}
|
||
buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL);
|
||
if (!buf)
|
||
return -ENOMEM;
|
||
|
||
dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
|
||
if (!dr) {
|
||
kfree(buf);
|
||
return -ENOMEM;
|
||
}
|
||
|
||
/* Fill Setup packet for GetDescriptor */
|
||
dr->bRequestType = USB_DIR_IN;
|
||
dr->bRequest = USB_REQ_GET_DESCRIPTOR;
|
||
dr->wValue = cpu_to_le16(USB_DT_DEVICE << 8);
|
||
dr->wIndex = 0;
|
||
dr->wLength = cpu_to_le16(USB_DT_DEVICE_SIZE);
|
||
urb = xhci_request_single_step_set_feature_urb(udev, dr, buf, &done);
|
||
if (!urb) {
|
||
retval = -ENOMEM;
|
||
goto cleanup;
|
||
}
|
||
|
||
/* Now complete just the SETUP stage */
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
retval = xhci_submit_single_step_set_feature(hcd, urb, 1);
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
if (retval)
|
||
goto out1;
|
||
|
||
if (!wait_for_completion_timeout(&done, msecs_to_jiffies(2000))) {
|
||
usb_kill_urb(urb);
|
||
retval = -ETIMEDOUT;
|
||
xhci_err(xhci, "%s SETUP stage timed out on ep0\n", __func__);
|
||
goto out1;
|
||
}
|
||
|
||
/* Sleep for 15 seconds; HC will send SOFs during this period */
|
||
msleep(15 * 1000);
|
||
|
||
/* Complete remaining DATA and status stages. Re-use same URB */
|
||
urb->status = -EINPROGRESS;
|
||
usb_get_urb(urb);
|
||
atomic_inc(&urb->use_count);
|
||
atomic_inc(&urb->dev->urbnum);
|
||
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
retval = xhci_submit_single_step_set_feature(hcd, urb, 0);
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
if (!retval && !wait_for_completion_timeout(&done,
|
||
msecs_to_jiffies(2000))) {
|
||
usb_kill_urb(urb);
|
||
retval = -ETIMEDOUT;
|
||
xhci_err(xhci, "%s IN stage timed out on ep0\n", __func__);
|
||
}
|
||
out1:
|
||
usb_free_urb(urb);
|
||
cleanup:
|
||
kfree(dr);
|
||
kfree(buf);
|
||
return retval;
|
||
}
|
||
|
||
int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
|
||
u16 wIndex, char *buf, u16 wLength)
|
||
{
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
int max_ports;
|
||
unsigned long flags;
|
||
u32 temp, status;
|
||
int retval = 0;
|
||
int slot_id;
|
||
struct xhci_bus_state *bus_state;
|
||
u16 link_state = 0;
|
||
u16 wake_mask = 0;
|
||
u16 timeout = 0;
|
||
u16 test_mode = 0;
|
||
struct xhci_hub *rhub;
|
||
struct xhci_port **ports;
|
||
|
||
rhub = xhci_get_rhub(hcd);
|
||
ports = rhub->ports;
|
||
max_ports = rhub->num_ports;
|
||
bus_state = &xhci->bus_state[hcd_index(hcd)];
|
||
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
switch (typeReq) {
|
||
case GetHubStatus:
|
||
/* No power source, over-current reported per port */
|
||
memset(buf, 0, 4);
|
||
break;
|
||
case GetHubDescriptor:
|
||
/* Check to make sure userspace is asking for the USB 3.0 hub
|
||
* descriptor for the USB 3.0 roothub. If not, we stall the
|
||
* endpoint, like external hubs do.
|
||
*/
|
||
if (hcd->speed >= HCD_USB3 &&
|
||
(wLength < USB_DT_SS_HUB_SIZE ||
|
||
wValue != (USB_DT_SS_HUB << 8))) {
|
||
xhci_dbg(xhci, "Wrong hub descriptor type for "
|
||
"USB 3.0 roothub.\n");
|
||
goto error;
|
||
}
|
||
xhci_hub_descriptor(hcd, xhci,
|
||
(struct usb_hub_descriptor *) buf);
|
||
break;
|
||
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
||
if ((wValue & 0xff00) != (USB_DT_BOS << 8))
|
||
goto error;
|
||
|
||
if (hcd->speed < HCD_USB3)
|
||
goto error;
|
||
|
||
retval = xhci_create_usb3_bos_desc(xhci, buf, wLength);
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
return retval;
|
||
case GetPortStatus:
|
||
if (!wIndex || wIndex > max_ports)
|
||
goto error;
|
||
wIndex--;
|
||
temp = readl(ports[wIndex]->addr);
|
||
if (temp == ~(u32)0) {
|
||
xhci_hc_died(xhci);
|
||
retval = -ENODEV;
|
||
break;
|
||
}
|
||
trace_xhci_get_port_status(wIndex, temp);
|
||
status = xhci_get_port_status(hcd, bus_state, wIndex, temp,
|
||
&flags);
|
||
if (status == 0xffffffff)
|
||
goto error;
|
||
|
||
xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n",
|
||
wIndex, temp);
|
||
xhci_dbg(xhci, "Get port status returned 0x%x\n", status);
|
||
|
||
put_unaligned(cpu_to_le32(status), (__le32 *) buf);
|
||
/* if USB 3.1 extended port status return additional 4 bytes */
|
||
if (wValue == 0x02) {
|
||
u32 port_li;
|
||
|
||
if (hcd->speed < HCD_USB31 || wLength != 8) {
|
||
xhci_err(xhci, "get ext port status invalid parameter\n");
|
||
retval = -EINVAL;
|
||
break;
|
||
}
|
||
port_li = readl(ports[wIndex]->addr + PORTLI);
|
||
status = xhci_get_ext_port_status(temp, port_li);
|
||
put_unaligned_le32(status, &buf[4]);
|
||
}
|
||
break;
|
||
case SetPortFeature:
|
||
if (wValue == USB_PORT_FEAT_LINK_STATE)
|
||
link_state = (wIndex & 0xff00) >> 3;
|
||
if (wValue == USB_PORT_FEAT_REMOTE_WAKE_MASK)
|
||
wake_mask = wIndex & 0xff00;
|
||
if (wValue == USB_PORT_FEAT_TEST)
|
||
test_mode = (wIndex & 0xff00) >> 8;
|
||
/* The MSB of wIndex is the U1/U2 timeout */
|
||
timeout = (wIndex & 0xff00) >> 8;
|
||
wIndex &= 0xff;
|
||
if (!wIndex || wIndex > max_ports)
|
||
goto error;
|
||
wIndex--;
|
||
temp = readl(ports[wIndex]->addr);
|
||
if (temp == ~(u32)0) {
|
||
xhci_hc_died(xhci);
|
||
retval = -ENODEV;
|
||
break;
|
||
}
|
||
temp = xhci_port_state_to_neutral(temp);
|
||
/* FIXME: What new port features do we need to support? */
|
||
switch (wValue) {
|
||
case USB_PORT_FEAT_SUSPEND:
|
||
temp = readl(ports[wIndex]->addr);
|
||
if ((temp & PORT_PLS_MASK) != XDEV_U0) {
|
||
/* Resume the port to U0 first */
|
||
xhci_set_link_state(xhci, ports[wIndex],
|
||
XDEV_U0);
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
msleep(10);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
}
|
||
/* In spec software should not attempt to suspend
|
||
* a port unless the port reports that it is in the
|
||
* enabled (PED = ‘1’,PLS < ‘3’) state.
|
||
*/
|
||
temp = readl(ports[wIndex]->addr);
|
||
if ((temp & PORT_PE) == 0 || (temp & PORT_RESET)
|
||
|| (temp & PORT_PLS_MASK) >= XDEV_U3) {
|
||
xhci_warn(xhci, "USB core suspending device not in U0/U1/U2.\n");
|
||
goto error;
|
||
}
|
||
|
||
slot_id = xhci_find_slot_id_by_port(hcd, xhci,
|
||
wIndex + 1);
|
||
if (!slot_id) {
|
||
xhci_warn(xhci, "slot_id is zero\n");
|
||
goto error;
|
||
}
|
||
/* unlock to execute stop endpoint commands */
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
xhci_stop_device(xhci, slot_id, 1);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
|
||
xhci_set_link_state(xhci, ports[wIndex], XDEV_U3);
|
||
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
msleep(10); /* wait device to enter */
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
|
||
temp = readl(ports[wIndex]->addr);
|
||
bus_state->suspended_ports |= 1 << wIndex;
|
||
break;
|
||
case USB_PORT_FEAT_LINK_STATE:
|
||
temp = readl(ports[wIndex]->addr);
|
||
/* Disable port */
|
||
if (link_state == USB_SS_PORT_LS_SS_DISABLED) {
|
||
xhci_dbg(xhci, "Disable port %d\n", wIndex);
|
||
temp = xhci_port_state_to_neutral(temp);
|
||
/*
|
||
* Clear all change bits, so that we get a new
|
||
* connection event.
|
||
*/
|
||
temp |= PORT_CSC | PORT_PEC | PORT_WRC |
|
||
PORT_OCC | PORT_RC | PORT_PLC |
|
||
PORT_CEC;
|
||
writel(temp | PORT_PE, ports[wIndex]->addr);
|
||
temp = readl(ports[wIndex]->addr);
|
||
break;
|
||
}
|
||
|
||
/* Put link in RxDetect (enable port) */
|
||
if (link_state == USB_SS_PORT_LS_RX_DETECT) {
|
||
xhci_dbg(xhci, "Enable port %d\n", wIndex);
|
||
xhci_set_link_state(xhci, ports[wIndex],
|
||
link_state);
|
||
temp = readl(ports[wIndex]->addr);
|
||
break;
|
||
}
|
||
|
||
/*
|
||
* For xHCI 1.1 according to section 4.19.1.2.4.1 a
|
||
* root hub port's transition to compliance mode upon
|
||
* detecting LFPS timeout may be controlled by an
|
||
* Compliance Transition Enabled (CTE) flag (not
|
||
* software visible). This flag is set by writing 0xA
|
||
* to PORTSC PLS field which will allow transition to
|
||
* compliance mode the next time LFPS timeout is
|
||
* encountered. A warm reset will clear it.
|
||
*
|
||
* The CTE flag is only supported if the HCCPARAMS2 CTC
|
||
* flag is set, otherwise, the compliance substate is
|
||
* automatically entered as on 1.0 and prior.
|
||
*/
|
||
if (link_state == USB_SS_PORT_LS_COMP_MOD) {
|
||
if (!HCC2_CTC(xhci->hcc_params2)) {
|
||
xhci_dbg(xhci, "CTC flag is 0, port already supports entering compliance mode\n");
|
||
break;
|
||
}
|
||
|
||
if ((temp & PORT_CONNECT)) {
|
||
xhci_warn(xhci, "Can't set compliance mode when port is connected\n");
|
||
goto error;
|
||
}
|
||
|
||
xhci_dbg(xhci, "Enable compliance mode transition for port %d\n",
|
||
wIndex);
|
||
xhci_set_link_state(xhci, ports[wIndex],
|
||
link_state);
|
||
|
||
temp = readl(ports[wIndex]->addr);
|
||
break;
|
||
}
|
||
/* Port must be enabled */
|
||
if (!(temp & PORT_PE)) {
|
||
retval = -ENODEV;
|
||
break;
|
||
}
|
||
/* Can't set port link state above '3' (U3) */
|
||
if (link_state > USB_SS_PORT_LS_U3) {
|
||
xhci_warn(xhci, "Cannot set port %d link state %d\n",
|
||
wIndex, link_state);
|
||
goto error;
|
||
}
|
||
if (link_state == USB_SS_PORT_LS_U3) {
|
||
slot_id = xhci_find_slot_id_by_port(hcd, xhci,
|
||
wIndex + 1);
|
||
if (slot_id) {
|
||
/* unlock to execute stop endpoint
|
||
* commands */
|
||
spin_unlock_irqrestore(&xhci->lock,
|
||
flags);
|
||
xhci_stop_device(xhci, slot_id, 1);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
}
|
||
}
|
||
|
||
xhci_set_link_state(xhci, ports[wIndex], link_state);
|
||
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
if (link_state == USB_SS_PORT_LS_U3) {
|
||
int retries = 16;
|
||
|
||
while (retries--) {
|
||
usleep_range(4000, 8000);
|
||
temp = readl(ports[wIndex]->addr);
|
||
if ((temp & PORT_PLS_MASK) == XDEV_U3)
|
||
break;
|
||
}
|
||
}
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
|
||
temp = readl(ports[wIndex]->addr);
|
||
if (link_state == USB_SS_PORT_LS_U3)
|
||
bus_state->suspended_ports |= 1 << wIndex;
|
||
break;
|
||
case USB_PORT_FEAT_POWER:
|
||
/*
|
||
* Turn on ports, even if there isn't per-port switching.
|
||
* HC will report connect events even before this is set.
|
||
* However, hub_wq will ignore the roothub events until
|
||
* the roothub is registered.
|
||
*/
|
||
xhci_set_port_power(xhci, hcd, wIndex, true, &flags);
|
||
break;
|
||
case USB_PORT_FEAT_RESET:
|
||
temp = (temp | PORT_RESET);
|
||
writel(temp, ports[wIndex]->addr);
|
||
|
||
temp = readl(ports[wIndex]->addr);
|
||
xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp);
|
||
break;
|
||
case USB_PORT_FEAT_REMOTE_WAKE_MASK:
|
||
xhci_set_remote_wake_mask(xhci, ports[wIndex],
|
||
wake_mask);
|
||
temp = readl(ports[wIndex]->addr);
|
||
xhci_dbg(xhci, "set port remote wake mask, "
|
||
"actual port %d status = 0x%x\n",
|
||
wIndex, temp);
|
||
break;
|
||
case USB_PORT_FEAT_BH_PORT_RESET:
|
||
temp |= PORT_WR;
|
||
writel(temp, ports[wIndex]->addr);
|
||
temp = readl(ports[wIndex]->addr);
|
||
break;
|
||
case USB_PORT_FEAT_U1_TIMEOUT:
|
||
if (hcd->speed < HCD_USB3)
|
||
goto error;
|
||
temp = readl(ports[wIndex]->addr + PORTPMSC);
|
||
temp &= ~PORT_U1_TIMEOUT_MASK;
|
||
temp |= PORT_U1_TIMEOUT(timeout);
|
||
writel(temp, ports[wIndex]->addr + PORTPMSC);
|
||
break;
|
||
case USB_PORT_FEAT_U2_TIMEOUT:
|
||
if (hcd->speed < HCD_USB3)
|
||
goto error;
|
||
temp = readl(ports[wIndex]->addr + PORTPMSC);
|
||
temp &= ~PORT_U2_TIMEOUT_MASK;
|
||
temp |= PORT_U2_TIMEOUT(timeout);
|
||
writel(temp, ports[wIndex]->addr + PORTPMSC);
|
||
break;
|
||
case USB_PORT_FEAT_TEST:
|
||
/* 4.19.6 Port Test Modes (USB2 Test Mode) */
|
||
if (hcd->speed != HCD_USB2)
|
||
goto error;
|
||
if (test_mode == 6) { /* TEST_SINGLE_STEP_SET_FEATURE */
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
retval = xhci_ehset_single_step_set_feature(hcd,
|
||
wIndex);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
break;
|
||
}
|
||
if (test_mode > TEST_FORCE_EN || test_mode < TEST_J)
|
||
goto error;
|
||
retval = xhci_enter_test_mode(xhci, test_mode, wIndex,
|
||
&flags);
|
||
break;
|
||
default:
|
||
goto error;
|
||
}
|
||
/* unblock any posted writes */
|
||
temp = readl(ports[wIndex]->addr);
|
||
break;
|
||
case ClearPortFeature:
|
||
if (!wIndex || wIndex > max_ports)
|
||
goto error;
|
||
wIndex--;
|
||
temp = readl(ports[wIndex]->addr);
|
||
if (temp == ~(u32)0) {
|
||
xhci_hc_died(xhci);
|
||
retval = -ENODEV;
|
||
break;
|
||
}
|
||
/* FIXME: What new port features do we need to support? */
|
||
temp = xhci_port_state_to_neutral(temp);
|
||
switch (wValue) {
|
||
case USB_PORT_FEAT_SUSPEND:
|
||
temp = readl(ports[wIndex]->addr);
|
||
xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n");
|
||
xhci_dbg(xhci, "PORTSC %04x\n", temp);
|
||
if (temp & PORT_RESET)
|
||
goto error;
|
||
if ((temp & PORT_PLS_MASK) == XDEV_U3) {
|
||
if ((temp & PORT_PE) == 0)
|
||
goto error;
|
||
|
||
set_bit(wIndex, &bus_state->resuming_ports);
|
||
usb_hcd_start_port_resume(&hcd->self, wIndex);
|
||
xhci_set_link_state(xhci, ports[wIndex],
|
||
XDEV_RESUME);
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
usleep_range(21000, 21500);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
xhci_set_link_state(xhci, ports[wIndex],
|
||
XDEV_U0);
|
||
clear_bit(wIndex, &bus_state->resuming_ports);
|
||
usb_hcd_end_port_resume(&hcd->self, wIndex);
|
||
}
|
||
bus_state->port_c_suspend |= 1 << wIndex;
|
||
|
||
slot_id = xhci_find_slot_id_by_port(hcd, xhci,
|
||
wIndex + 1);
|
||
if (!slot_id) {
|
||
xhci_dbg(xhci, "slot_id is zero\n");
|
||
goto error;
|
||
}
|
||
xhci_ring_device(xhci, slot_id);
|
||
break;
|
||
case USB_PORT_FEAT_C_SUSPEND:
|
||
bus_state->port_c_suspend &= ~(1 << wIndex);
|
||
/* fall through */
|
||
case USB_PORT_FEAT_C_RESET:
|
||
case USB_PORT_FEAT_C_BH_PORT_RESET:
|
||
case USB_PORT_FEAT_C_CONNECTION:
|
||
case USB_PORT_FEAT_C_OVER_CURRENT:
|
||
case USB_PORT_FEAT_C_ENABLE:
|
||
case USB_PORT_FEAT_C_PORT_LINK_STATE:
|
||
case USB_PORT_FEAT_C_PORT_CONFIG_ERROR:
|
||
xhci_clear_port_change_bit(xhci, wValue, wIndex,
|
||
ports[wIndex]->addr, temp);
|
||
break;
|
||
case USB_PORT_FEAT_ENABLE:
|
||
xhci_disable_port(hcd, xhci, wIndex,
|
||
ports[wIndex]->addr, temp);
|
||
break;
|
||
case USB_PORT_FEAT_POWER:
|
||
xhci_set_port_power(xhci, hcd, wIndex, false, &flags);
|
||
break;
|
||
case USB_PORT_FEAT_TEST:
|
||
retval = xhci_exit_test_mode(xhci);
|
||
break;
|
||
default:
|
||
goto error;
|
||
}
|
||
break;
|
||
default:
|
||
error:
|
||
/* "stall" on error */
|
||
retval = -EPIPE;
|
||
}
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
return retval;
|
||
}
|
||
|
||
/*
|
||
* Returns 0 if the status hasn't changed, or the number of bytes in buf.
|
||
* Ports are 0-indexed from the HCD point of view,
|
||
* and 1-indexed from the USB core pointer of view.
|
||
*
|
||
* Note that the status change bits will be cleared as soon as a port status
|
||
* change event is generated, so we use the saved status from that event.
|
||
*/
|
||
int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
|
||
{
|
||
unsigned long flags;
|
||
u32 temp, status;
|
||
u32 mask;
|
||
int i, retval;
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
int max_ports;
|
||
struct xhci_bus_state *bus_state;
|
||
bool reset_change = false;
|
||
struct xhci_hub *rhub;
|
||
struct xhci_port **ports;
|
||
|
||
rhub = xhci_get_rhub(hcd);
|
||
ports = rhub->ports;
|
||
max_ports = rhub->num_ports;
|
||
bus_state = &xhci->bus_state[hcd_index(hcd)];
|
||
|
||
/* Initial status is no changes */
|
||
retval = (max_ports + 8) / 8;
|
||
memset(buf, 0, retval);
|
||
|
||
/*
|
||
* Inform the usbcore about resume-in-progress by returning
|
||
* a non-zero value even if there are no status changes.
|
||
*/
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
|
||
status = bus_state->resuming_ports;
|
||
|
||
mask = PORT_CSC | PORT_PEC | PORT_OCC | PORT_PLC | PORT_WRC | PORT_CEC;
|
||
|
||
/* For each port, did anything change? If so, set that bit in buf. */
|
||
for (i = 0; i < max_ports; i++) {
|
||
temp = readl(ports[i]->addr);
|
||
if (temp == ~(u32)0) {
|
||
xhci_hc_died(xhci);
|
||
retval = -ENODEV;
|
||
break;
|
||
}
|
||
trace_xhci_hub_status_data(i, temp);
|
||
|
||
if ((temp & mask) != 0 ||
|
||
(bus_state->port_c_suspend & 1 << i) ||
|
||
(bus_state->resume_done[i] && time_after_eq(
|
||
jiffies, bus_state->resume_done[i]))) {
|
||
buf[(i + 1) / 8] |= 1 << (i + 1) % 8;
|
||
status = 1;
|
||
}
|
||
if ((temp & PORT_RC))
|
||
reset_change = true;
|
||
if (temp & PORT_OC)
|
||
status = 1;
|
||
}
|
||
if (!status && !reset_change) {
|
||
xhci_dbg(xhci, "%s: stopping port polling.\n", __func__);
|
||
clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
|
||
}
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
return status ? retval : 0;
|
||
}
|
||
|
||
#ifdef CONFIG_PM
|
||
|
||
int xhci_bus_suspend(struct usb_hcd *hcd)
|
||
{
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
int max_ports, port_index;
|
||
struct xhci_bus_state *bus_state;
|
||
unsigned long flags;
|
||
struct xhci_hub *rhub;
|
||
struct xhci_port **ports;
|
||
u32 portsc_buf[USB_MAXCHILDREN];
|
||
bool wake_enabled;
|
||
|
||
rhub = xhci_get_rhub(hcd);
|
||
ports = rhub->ports;
|
||
max_ports = rhub->num_ports;
|
||
bus_state = &xhci->bus_state[hcd_index(hcd)];
|
||
wake_enabled = hcd->self.root_hub->do_remote_wakeup;
|
||
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
|
||
if (wake_enabled) {
|
||
if (bus_state->resuming_ports || /* USB2 */
|
||
bus_state->port_remote_wakeup) { /* USB3 */
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
xhci_dbg(xhci, "suspend failed because a port is resuming\n");
|
||
return -EBUSY;
|
||
}
|
||
}
|
||
/*
|
||
* Prepare ports for suspend, but don't write anything before all ports
|
||
* are checked and we know bus suspend can proceed
|
||
*/
|
||
bus_state->bus_suspended = 0;
|
||
port_index = max_ports;
|
||
while (port_index--) {
|
||
u32 t1, t2;
|
||
int retries = 10;
|
||
retry:
|
||
t1 = readl(ports[port_index]->addr);
|
||
t2 = xhci_port_state_to_neutral(t1);
|
||
portsc_buf[port_index] = 0;
|
||
|
||
/*
|
||
* Give a USB3 port in link training time to finish, but don't
|
||
* prevent suspend as port might be stuck
|
||
*/
|
||
if ((hcd->speed >= HCD_USB3) && retries-- &&
|
||
(t1 & PORT_PLS_MASK) == XDEV_POLLING) {
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
msleep(XHCI_PORT_POLLING_LFPS_TIME);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
xhci_dbg(xhci, "port %d polling in bus suspend, waiting\n",
|
||
port_index);
|
||
goto retry;
|
||
}
|
||
/* bail out if port detected a over-current condition */
|
||
if (t1 & PORT_OC) {
|
||
bus_state->bus_suspended = 0;
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
xhci_dbg(xhci, "Bus suspend bailout, port over-current detected\n");
|
||
return -EBUSY;
|
||
}
|
||
/* suspend ports in U0, or bail out for new connect changes */
|
||
if ((t1 & PORT_PE) && (t1 & PORT_PLS_MASK) == XDEV_U0) {
|
||
if ((t1 & PORT_CSC) && wake_enabled) {
|
||
bus_state->bus_suspended = 0;
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
xhci_dbg(xhci, "Bus suspend bailout, port connect change\n");
|
||
return -EBUSY;
|
||
}
|
||
xhci_dbg(xhci, "port %d not suspended\n", port_index);
|
||
t2 &= ~PORT_PLS_MASK;
|
||
t2 |= PORT_LINK_STROBE | XDEV_U3;
|
||
set_bit(port_index, &bus_state->bus_suspended);
|
||
}
|
||
/* USB core sets remote wake mask for USB 3.0 hubs,
|
||
* including the USB 3.0 roothub, but only if CONFIG_PM
|
||
* is enabled, so also enable remote wake here.
|
||
*/
|
||
if (wake_enabled) {
|
||
if (t1 & PORT_CONNECT) {
|
||
t2 |= PORT_WKOC_E | PORT_WKDISC_E;
|
||
t2 &= ~PORT_WKCONN_E;
|
||
} else {
|
||
t2 |= PORT_WKOC_E | PORT_WKCONN_E;
|
||
t2 &= ~PORT_WKDISC_E;
|
||
}
|
||
|
||
if ((xhci->quirks & XHCI_U2_DISABLE_WAKE) &&
|
||
(hcd->speed < HCD_USB3)) {
|
||
if (usb_amd_pt_check_port(hcd->self.controller,
|
||
port_index))
|
||
t2 &= ~PORT_WAKE_BITS;
|
||
}
|
||
} else
|
||
t2 &= ~PORT_WAKE_BITS;
|
||
|
||
t1 = xhci_port_state_to_neutral(t1);
|
||
if (t1 != t2)
|
||
portsc_buf[port_index] = t2;
|
||
}
|
||
|
||
/* write port settings, stopping and suspending ports if needed */
|
||
port_index = max_ports;
|
||
while (port_index--) {
|
||
if (!portsc_buf[port_index])
|
||
continue;
|
||
if (test_bit(port_index, &bus_state->bus_suspended)) {
|
||
int slot_id;
|
||
|
||
slot_id = xhci_find_slot_id_by_port(hcd, xhci,
|
||
port_index + 1);
|
||
if (slot_id) {
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
xhci_stop_device(xhci, slot_id, 1);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
}
|
||
}
|
||
writel(portsc_buf[port_index], ports[port_index]->addr);
|
||
}
|
||
hcd->state = HC_STATE_SUSPENDED;
|
||
bus_state->next_statechange = jiffies + msecs_to_jiffies(10);
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
|
||
if (bus_state->bus_suspended)
|
||
usleep_range(5000, 10000);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* Workaround for missing Cold Attach Status (CAS) if device re-plugged in S3.
|
||
* warm reset a USB3 device stuck in polling or compliance mode after resume.
|
||
* See Intel 100/c230 series PCH specification update Doc #332692-006 Errata #8
|
||
*/
|
||
static bool xhci_port_missing_cas_quirk(struct xhci_port *port)
|
||
{
|
||
u32 portsc;
|
||
|
||
portsc = readl(port->addr);
|
||
|
||
/* if any of these are set we are not stuck */
|
||
if (portsc & (PORT_CONNECT | PORT_CAS))
|
||
return false;
|
||
|
||
if (((portsc & PORT_PLS_MASK) != XDEV_POLLING) &&
|
||
((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE))
|
||
return false;
|
||
|
||
/* clear wakeup/change bits, and do a warm port reset */
|
||
portsc &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
|
||
portsc |= PORT_WR;
|
||
writel(portsc, port->addr);
|
||
/* flush write */
|
||
readl(port->addr);
|
||
return true;
|
||
}
|
||
|
||
int xhci_bus_resume(struct usb_hcd *hcd)
|
||
{
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
struct xhci_bus_state *bus_state;
|
||
unsigned long flags;
|
||
int max_ports, port_index;
|
||
int slot_id;
|
||
int sret;
|
||
u32 next_state;
|
||
u32 temp, portsc;
|
||
struct xhci_hub *rhub;
|
||
struct xhci_port **ports;
|
||
|
||
rhub = xhci_get_rhub(hcd);
|
||
ports = rhub->ports;
|
||
max_ports = rhub->num_ports;
|
||
bus_state = &xhci->bus_state[hcd_index(hcd)];
|
||
|
||
if (time_before(jiffies, bus_state->next_statechange))
|
||
msleep(5);
|
||
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
if (!HCD_HW_ACCESSIBLE(hcd)) {
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
return -ESHUTDOWN;
|
||
}
|
||
|
||
/* delay the irqs */
|
||
temp = readl(&xhci->op_regs->command);
|
||
temp &= ~CMD_EIE;
|
||
writel(temp, &xhci->op_regs->command);
|
||
|
||
/* bus specific resume for ports we suspended at bus_suspend */
|
||
if (hcd->speed >= HCD_USB3)
|
||
next_state = XDEV_U0;
|
||
else
|
||
next_state = XDEV_RESUME;
|
||
|
||
port_index = max_ports;
|
||
while (port_index--) {
|
||
portsc = readl(ports[port_index]->addr);
|
||
|
||
/* warm reset CAS limited ports stuck in polling/compliance */
|
||
if ((xhci->quirks & XHCI_MISSING_CAS) &&
|
||
(hcd->speed >= HCD_USB3) &&
|
||
xhci_port_missing_cas_quirk(ports[port_index])) {
|
||
xhci_dbg(xhci, "reset stuck port %d\n", port_index);
|
||
clear_bit(port_index, &bus_state->bus_suspended);
|
||
continue;
|
||
}
|
||
/* resume if we suspended the link, and it is still suspended */
|
||
if (test_bit(port_index, &bus_state->bus_suspended))
|
||
switch (portsc & PORT_PLS_MASK) {
|
||
case XDEV_U3:
|
||
portsc = xhci_port_state_to_neutral(portsc);
|
||
portsc &= ~PORT_PLS_MASK;
|
||
portsc |= PORT_LINK_STROBE | next_state;
|
||
break;
|
||
case XDEV_RESUME:
|
||
/* resume already initiated */
|
||
break;
|
||
default:
|
||
/* not in a resumeable state, ignore it */
|
||
clear_bit(port_index,
|
||
&bus_state->bus_suspended);
|
||
break;
|
||
}
|
||
/* disable wake for all ports, write new link state if needed */
|
||
portsc &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
|
||
writel(portsc, ports[port_index]->addr);
|
||
}
|
||
|
||
/* USB2 specific resume signaling delay and U0 link state transition */
|
||
if (hcd->speed < HCD_USB3) {
|
||
if (bus_state->bus_suspended) {
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
msleep(USB_RESUME_TIMEOUT);
|
||
spin_lock_irqsave(&xhci->lock, flags);
|
||
}
|
||
for_each_set_bit(port_index, &bus_state->bus_suspended,
|
||
BITS_PER_LONG) {
|
||
/* Clear PLC to poll it later for U0 transition */
|
||
xhci_test_and_clear_bit(xhci, ports[port_index],
|
||
PORT_PLC);
|
||
xhci_set_link_state(xhci, ports[port_index], XDEV_U0);
|
||
}
|
||
}
|
||
|
||
/* poll for U0 link state complete, both USB2 and USB3 */
|
||
for_each_set_bit(port_index, &bus_state->bus_suspended, BITS_PER_LONG) {
|
||
sret = xhci_handshake(ports[port_index]->addr, PORT_PLC,
|
||
PORT_PLC, 10 * 1000);
|
||
if (sret) {
|
||
xhci_warn(xhci, "port %d resume PLC timeout\n",
|
||
port_index);
|
||
continue;
|
||
}
|
||
xhci_test_and_clear_bit(xhci, ports[port_index], PORT_PLC);
|
||
slot_id = xhci_find_slot_id_by_port(hcd, xhci, port_index + 1);
|
||
if (slot_id)
|
||
xhci_ring_device(xhci, slot_id);
|
||
}
|
||
(void) readl(&xhci->op_regs->command);
|
||
|
||
bus_state->next_statechange = jiffies + msecs_to_jiffies(5);
|
||
/* re-enable irqs */
|
||
temp = readl(&xhci->op_regs->command);
|
||
temp |= CMD_EIE;
|
||
writel(temp, &xhci->op_regs->command);
|
||
temp = readl(&xhci->op_regs->command);
|
||
|
||
spin_unlock_irqrestore(&xhci->lock, flags);
|
||
return 0;
|
||
}
|
||
|
||
unsigned long xhci_get_resuming_ports(struct usb_hcd *hcd)
|
||
{
|
||
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
|
||
struct xhci_bus_state *bus_state;
|
||
|
||
bus_state = &xhci->bus_state[hcd_index(hcd)];
|
||
|
||
/* USB3 port wakeups are reported via usb_wakeup_notification() */
|
||
return bus_state->resuming_ports; /* USB2 ports only */
|
||
}
|
||
|
||
#endif /* CONFIG_PM */
|