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path: root/drivers/usb/cdns3/cdnsp-ring.c
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2023-01-17usb: cdnsp: : add scatter gather support for ISOC endpointPawel Laszczak1-50/+60
Patch implements scatter gather support for isochronous endpoint. This fix is forced by 'commit e81e7f9a0eb9 ("usb: gadget: uvc: add scatter gather support")'. After this fix CDNSP driver stop working with UVC class. Signed-off-by: Pawel Laszczak <[email protected]> Reviewed-by: Peter Chen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-11-29usb: cdnsp: fix lack of ZLP for ep0Pawel Laszczak1-10/+32
Patch implements the handling of ZLP for control transfer. To send the ZLP driver must prepare the extra TRB in TD with length set to zero and TRB type to TRB_NORMAL. The first TRB must have set TRB_CHAIN flag, TD_SIZE = 1 and TRB type to TRB_DATA. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") cc: <[email protected]> Reviewed-by: Peter Chen <[email protected]> Signed-off-by: Pawel Laszczak <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-11-22usb: cdnsp: fix issue with ZLP - added TD_SIZE = 1Pawel Laszczak1-4/+10
Patch modifies the TD_SIZE in TRB before ZLP TRB. The TD_SIZE in TRB before ZLP TRB must be set to 1 to force processing ZLP TRB by controller. cc: <[email protected]> Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <[email protected]> Reviewed-by: Peter Chen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-11-22usb: cdnsp: Fix issue with Clear Feature Halt EndpointPawel Laszczak1-1/+2
During handling Clear Halt Endpoint Feature request, driver invokes Reset Endpoint command. Because this command has some issue with transition endpoint from Running to Idle state the driver must stop the endpoint by using Stop Endpoint command. cc: <[email protected]> Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Reviewed-by: Peter Chen <[email protected]> Signed-off-by: Pawel Laszczak <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-06-10usb: cdnsp: Fixed setting last_trb incorrectlyJing Leng1-8/+11
When ZLP occurs in bulk transmission, currently cdnsp will set last_trb for the last two TRBs, it will trigger an error "ERROR Transfer event TRB DMA ptr not part of current TD ...". Fixes: e913aada0683 ("usb: cdnsp: Fixed issue with ZLP") Cc: stable <[email protected]> Acked-by: Pawel Laszczak <[email protected]> Signed-off-by: Jing Leng <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-13usb: cdnsp: Fix incorrect status for control requestPawel Laszczak1-0/+2
Patch fixes incorrect status for control request. Without this fix all usb_request objects were returned to upper drivers with usb_reqest->status field set to -EINPROGRESS. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") cc: <[email protected]> Reported-by: Ken (Jian) He <[email protected]> Reviewed-by: Peter Chen <[email protected]> Signed-off-by: Pawel Laszczak <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-13usb: cdnsp: Fix incorrect calling of cdnsp_died functionPawel Laszczak1-1/+8
Patch restrict calling of cdnsp_died function during removing modules or software disconnect. This function was called because after transition controller to HALT state the driver starts handling the deferred interrupt. In this case such interrupt can be simple ignored. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") cc: <[email protected]> Reviewed-by: Peter Chen <[email protected]> Signed-off-by: Pawel Laszczak <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-07-29usb: cdnsp: Fixed issue with ZLPPawel Laszczak1-10/+8
The condition "if (need_zero_pkt && zero_len_trb)" was always false and it caused that TRB for ZLP was not prepared. Fix causes that after preparing last TRB in TD, the driver prepares additional TD with ZLP when a ZLP is required. Cc: <[email protected]> Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Peter Chen <[email protected]>
2021-05-27usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handlerPawel Laszczak1-3/+4
Patch fixes the following critical issue caused by deadlock which has been detected during testing NCM class: smp: csd: Detected non-responsive CSD lock (#1) on CPU#0 smp: csd: CSD lock (#1) unresponsive. .... RIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0 RSP: 0018:ffffbc494011cde0 EFLAGS: 00000002 RAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0 Call Trace: <IRQ> do_raw_spin_lock+0xc0/0xd0 _raw_spin_lock_irqsave+0x95/0xa0 cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci] usb_ep_queue+0x35/0x110 eth_start_xmit+0x220/0x3d0 [u_ether] ncm_tx_timeout+0x34/0x40 [usb_f_ncm] ? ncm_free_inst+0x50/0x50 [usb_f_ncm] __hrtimer_run_queues+0xac/0x440 hrtimer_run_softirq+0x8c/0xb0 __do_softirq+0xcf/0x428 asm_call_irq_on_stack+0x12/0x20 </IRQ> do_softirq_own_stack+0x61/0x70 irq_exit_rcu+0xc1/0xd0 sysvec_apic_timer_interrupt+0x52/0xb0 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:do_raw_spin_trylock+0x18/0x40 RSP: 0018:ffffbc494138bda8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658 RBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000 R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658 R13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000 _raw_spin_lock+0x3d/0x70 ? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci] ? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci] ? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci] ? irq_thread+0xa0/0x1c0 irq_thread_fn+0x28/0x60 irq_thread+0x105/0x1c0 ? __kthread_parkme+0x42/0x90 ? irq_forced_thread_fn+0x90/0x90 ? wake_threads_waitq+0x30/0x30 ? irq_thread_check_affinity+0xe0/0xe0 kthread+0x12a/0x160 ? kthread_park+0x90/0x90 ret_from_fork+0x22/0x30 The root cause of issue is spin_lock/spin_unlock instruction instead spin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler function. Cc: [email protected] Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Peter Chen <[email protected]>
2021-03-13usb: cdnsp: Fixes incorrect value in ISOC TRBPawel Laszczak1-1/+4
Fixes issue with priority of operator. Operator "|" priority is higher then "? :". To improve the readability the operator "? :" has been replaced with "if ()" statement. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Reviewed-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: Pawel Laszczak <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2021-02-06usb: cdnsp: Removes some useless trace eventsPawel Laszczak1-1/+0
Patch removes some useless trace events that can be replaced by ftrace. Acked-by: Greg Kroah-Hartman <[email protected]> Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Pawel Laszczak <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2020-12-29usb: cdnsp: Fixes for sparse warningsPawel Laszczak1-2/+2
Patch fixes all sparse warnings in cdsnp driver. It fixes the following warnings: cdnsp-ring.c:1441: warning: incorrect type in assignment cdnsp-ring.c:1444: warning: restricted __le32 degrades to integer cdnsp-ring.c:2200: warning: dubious: x | !y cdnsp-gadget.c:501: warning: incorrect type in assignment cdnsp-gadget.c:504: warning: restricted __le32 degrades to integer cdnsp-gadget.c:507: warning: restricted __le32 degrades to integer cdnsp-gadget.c:508: warning: restricted __le32 degrades to integer cdnsp-gadget.c:509: warning: invalid assignment: |= cdnsp-gadget.c:510: warning: cast from restricted __le32 cdnsp-gadget.c:558: warning: incorrect type in assignment cdnsp-gadget.c:561: warning: restricted __le32 degrades to integer cdnsp-gadget.c:570: warning: restricted __le32 degrades to integer cdnsp-gadget.c:1571: warning: incorrect type in argument 1 cdnsp-gadget.c:1602: warning: restricted __le32 degrades to integer cdnsp-gadget.c:1760: warning: incorrect type in assignment cdnsp-gadget.c:1762: warning: incorrect type in assignment cdnsp-gadget.c:1763: warning: incorrect type in assignment cdnsp-gadget.c:1764: warning: incorrect type in assignment cdnsp-gadget.c:1765: warning: incorrect type in assignment cdnsp-gadget.c:1766: warning: incorrect type in assignment cdnsp-gadget.c:1767: warning: incorrect type in assignment cdnsp-gadget.c:458: warning: cast truncates bits from constant value (ffffffff07ffffff becomes 7ffffff) cdnsp-gadget.c:666: warning: cast truncates bits from constant value (ffffffff07ffffff becomes 7ffffff) cdnsp-mem.c:762: warning: incorrect type in assignment cdnsp-mem.c:763: warning: incorrect type in assignment cdnsp-mem.c:928: warning: cast from restricted __le16 cdnsp-mem.c:1187: warning: incorrect type in assignment cdnsp-mem.c:1191: warning: incorrect type in assignment cdnsp-ep0.c:142: warning: incorrect type in assignment cdnsp-ep0.c:144: warning: restricted __le32 degrades to integer cdnsp-ep0.c:147: warning: restricted __le32 degrades to integer cdnsp-ep0.c:148: warning: restricted __le32 degrades to integer cdnsp-ep0.c:179: warning: incorrect type in argument 1 cdnsp-ep0.c:311: warning: incorrect type in argument 1 cdnsp-ep0.c:469: warning: incorrect type in assignment cdnsp-trace.h:611:1: warning: cast from restricted __le32 Reported-by: kernel test robot <[email protected]> Signed-off-by: Pawel Laszczak <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2020-12-29usb: cdnsp: Add tracepoints for CDNSP driverPawel Laszczak1-6/+69
Patch adds the series of tracepoints that can be used for debugging issues detected in driver. Signed-off-by: Pawel Laszczak <[email protected]> Reviewed-by: Peter Chen <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2020-12-29usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD DriverPawel Laszczak1-0/+2376
This patch introduces the main part of Cadence USBSSP DRD driver to Linux kernel. To reduce the patch size a little bit, the header file gadget.h was intentionally added as separate patch. The Cadence USBSSP DRD Controller is a highly configurable IP Core which can be instantiated as Dual-Role Device (DRD), Peripheral Only and Host Only (XHCI)configurations. The current driver has been validated with FPGA platform. We have support for PCIe bus, which is used on FPGA prototyping. The host side of USBSS DRD controller is compliant with XHCI. The architecture for device side is almost the same as for host side, and most of the XHCI specification can be used to understand how this controller operates. Signed-off-by: Pawel Laszczak <[email protected]> Signed-off-by: Peter Chen <[email protected]>
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