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* usb: Drop usb_disable_asynch()Andrey Smirnov2019-03-112-33/+7
| | | | | | | | | | There are no users of usb_control_msg() in the codebase that pass timeout of 0, so it doesn't look like usb_disable_asynch() has any effect on USB operation. Drop that function and remove all of its uses to simplify things. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Use put_unaligned_be* helpersAndrey Smirnov2019-03-111-11/+7
| | | | | | | Replace explicit endianness casts with put_unaligned_be* helpers. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Introduce usb_stor_transport()Andrey Smirnov2019-03-111-96/+117
| | | | | | | | | Move retry logic found in all of the low-level usb_stor_* functions into a standalone subroutine and convert the rest of the code to use it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Drop unused us_blkdev_listAndrey Smirnov2019-03-111-3/+0
| | | | | | | There are no users of us_blkdev_list in the file. Drop it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Drop unused fields in struct us_dataAndrey Smirnov2019-03-112-16/+2
| | | | | | | | | | Only bulk-only transport is supported by the currennt codebase, so ep_bInterval and recv_intr_ep are not really used. Remove them and all related code. While at it remove flags and subclass as well since they are not really used anywhere in the codebase. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: hub: Do not include <scsi.h>Andrey Smirnov2019-03-111-1/+0
| | | | | | | No symbols found in <scsi.h> are used in this file. Drop it. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Drop struct SCSI_cmd_blockAndrey Smirnov2019-03-114-75/+65
| | | | | | | | | | | All the info we need to pass to transport function can be captured in a struct us_blk_dev and two byte arrays, so having a dedicated struct with many unused fields doesn't really buy us anything. Drop the struct and convert the rest of the code to pass needed data explicitly. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Remove unused variablesAndrey Smirnov2019-03-111-8/+0
| | | | | | | Drop a number of variables no longer used in the code. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Make usb_stor_request_sense() a standalone functionAndrey Smirnov2019-03-111-15/+18
| | | | | | | | | Don't try to re-use caller's "ccb" and instead convert usb_stor_request_sense() to use its own for clarity and to allow futher code improvements. No functional change intended. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Share code for READ(10) and WRITE(10)Andrey Smirnov2019-03-111-51/+9
| | | | | | | | | Both usb_stor_read_10() and usb_stor_write_10() do almost exactly the same thing, so merge them into a signle routine and adjust all of the users accordingly. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Drop extra call to transport in usb_stor_write_10()Andrey Smirnov2019-03-111-1/+1
| | | | | | | | | There doesn't seem to be a particularly good reason to call ->trasport() one last time after 2 failures. Drop the call so allow sharing this code with usb_stor_read_10() in the following commit. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Make usb_stor_write_10() a standalone functionAndrey Smirnov2019-03-111-18/+25
| | | | | | | | | Move special preparation steps done before the call to usb_stor_write_10() inside the function itself for clarity and to allow futher code improvements. No functional change intended. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Make usb_stor_read_10() a standalone functionAndrey Smirnov2019-03-111-16/+25
| | | | | | | | | Move special preparation steps done before the call to usb_stor_read_10() inside the function itself for clarity and to allow futher code improvements. No functional change intended. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Make usb_stor_test_unit_ready() a standalone functionAndrey Smirnov2019-03-111-12/+16
| | | | | | | | | Move special preparation steps done before the call to usb_stor_test_unit_ready() inside the function itself for clarity and to allow futher code improvements. No functional change intended. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Make usb_stor_inquiry() a standalone functionAndrey Smirnov2019-03-111-22/+30
| | | | | | | | | Move special preparation steps done before and after call to usb_stor_inquiry() inside the function itself for clarity and to allow futher code improvements. No functional change intended. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Make usb_stor_read_capacity() a standalone functionAndrey Smirnov2019-03-111-22/+31
| | | | | | | | | Move special preparation steps done before and after call to usb_stor_read_capacity() inside the function itself for clarity and to allow futher code improvements. No functional change intended. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Don't use "unsigned long" for 32-bit valuesAndrey Smirnov2019-03-111-3/+3
| | | | | | | | | | Unsignled long will expand to 64-bit unsigned integer on 64-bit CPUs. This will break current code using it to read out two 32-bit values returned by READ_CAPACITY. Fix the proble by using "u32" explicitly. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Replace custom debug tracing with dev_dbgAndrey Smirnov2019-03-113-90/+94
| | | | | | | | Replace custom debug tracing macros with a call to dev_dbg to simplify code and add device info into degug output. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: storage: Simplify memory allocation in usb_stor_probe()Andrey Smirnov2019-03-111-4/+1
| | | | | | | | Replace explicit malloc() + OOM check and memset() with a single call to xzalloc(). Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/nvme'Sascha Hauer2019-03-071-6/+1
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| * drivers: Make use of device_pci_driver()Andrey Smirnov2019-02-181-6/+1
| | | | | | | | | | | | | | Replace all of the generic PCI boilerplate with device_pci_driver(). Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | Merge branch 'for-next/imx8-usb'Sascha Hauer2019-03-0714-228/+3861
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| * | usb: usb251xb: add usb data lane port swap featureAndrey Smirnov2019-02-221-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Port of Linux patch https://patchwork.kernel.org/patch/10766235/ The HW can swap the USB differential-pair (D+/D-) for each port separately. So the USB signals can be re-aligned with a misplaced USB connector on the PCB. Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Reviewed-by: Richard Leitner <richard.leitner@skidata.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: Port Microchip USB251x USB hub driver from LinuxAndrey Smirnov2019-02-225-0/+695
| | | | | | | | | | | | | | | | | | | | | | | | Port Microchip USB251x USB hub driver from Linux. Needed by ZII's i.MX8MQ boards. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: Import DWC3 USB controller driver from LinuxAndrey Smirnov2019-02-229-0/+2783
| | | | | | | | | | | | | | | | | | | | | | | | | | | Import DWC3 USB controller driver from Linux. This is a bare minimum port of the code needed to support USB host functionality on i.MX8MQ. No other use-case is explicitly supported. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Make use of lo_hi_readq/writeq()Andrey Smirnov2019-02-221-10/+4
| | | | | | | | | | | | | | | | | | | | | | | | Make use of lo_hi_readq/writeq() to implement xhci_read/write_64() helpers, same as it is done in the Linux kernel. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Simplify route string building loopAndrey Smirnov2019-02-221-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | Simplify route string building loop by avoiding checking top_dev->parent->descriptor->bDeviceClass twice. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Initialize TRT flag for xHCI >= 1.0Andrey Smirnov2019-02-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Initialize TRT flag for xHCI >= 1.0, not just == 1.0. This is what Linux xHCI driver does. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Check usb_pipein(pipe) only once in xhci_submit_normal()Andrey Smirnov2019-02-221-12/+16
| | | | | | | | | | | | | | | | | | | | | | | | Simplfy xhci_submit_normal()'s logic a bit by using helper variables and making sure that usb_pipein(pipe) is only called once. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Drop 'dma' field from struct xhci_hcdAndrey Smirnov2019-02-222-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | Drop 'dma' field from struct xhci_hcd since it is not really used anywhere. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Simplify TRB initialization codeAndrey Smirnov2019-02-221-50/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current TRB initialization code in xHCI driver is: a) Somewhat inconsistent in endianness correctness: LE is insured in some places whereas in some places it isn't b) Somewhat inconsistent in how DMA buffer address is being written: some places utilize xhci_write_64, whereas others just assing cmd_trb field directly c) A bit wasetful since in a number of codepaths where TRB is used it is memset to zero first only to have 80+% of its fields changed to something else right after. To fix all of the above introduce xhci_init_event_cmd_trb(), that will initialize all of the fileds to desired values only once as well as taking care of endianness. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Convert xhci_submit_control() to use dma_map_single()Andrey Smirnov2019-02-221-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Convert xhci_submit_control() to use dma_(un)map_single(). These functions both allow us to handle potential physical/virtual address differences as well as allowing to drop a number of typecasts. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Convert xhci_submit_normal() to use dma_map_single()Andrey Smirnov2019-02-221-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Convert xhci_submit_normal() to use dma_(un)map_single(). These functions both allow us to handle potential physical/virtual address differences as well as allowing to drop a number of typecasts. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Don't try to DMA sync if buffer is NULLAndrey Smirnov2019-02-221-8/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Driver's .submit_control() callback can and will be called with buffer set to NULL (and length set to 0), so we need to make sure that we don't try to DMA sync the buffer in that case. Add appropriate gurads to make sure that doesn't happen. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Always wait for "Response Data" completionAndrey Smirnov2019-02-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Xhci_submit_control() submits TRB_DATA with TRB_IOC flag regardless of the vlaue of req->requesttype, so we shouldn't gate waiting for the event that will result from it with "req->requesttype & USB_DIR_IN". Failing to do this will result in unstable USB performance and will eventually cause the controller to fail completely. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Add support for 64-byte context sizeAndrey Smirnov2019-02-222-81/+188
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xHCI spec allows for various context to be either 32 or 64 bytes in size, so we can't rely on struct definitions to correctly reflect data layout. Port varios context accessors from Linux kernel and convert the rest of the code to use them in order to be able to support both context sizes. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Drop pointless bitwise orAndrey Smirnov2019-02-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | On_hs_hub is a boolean, not a bitfiled, so usage of bitwise or is unnecessary. Replace it with a regular assignement operator. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Make sure to initialize xhci->rings_listAndrey Smirnov2019-02-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Make sure to initialize xhci->rings_list, otherwise any use of the driver will result in a crash. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Cast ~XHCI_IRQS to u32Andrey Smirnov2019-02-221-1/+1
| | | | | | | | | | | | | | | | | | | | | Cast ~XHCI_IRQS to u32 to avoid getting a warning on 64-bit builds. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Do not zero out DMA coherent memoryAndrey Smirnov2019-02-221-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | Memory returned by dma_alloc_coherent() should already be zeroed out, so there's no need to do this explicitly. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * | usb: xhci-hcd: Tabify the fileAndrey Smirnov2019-02-221-68/+68
| |/ | | | | | | | | | | | | | | Replace occasional all-whiltespace indentation with tabs for consistency. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* / usb: imx: Do not disable VBUS on ehci_register()'s successAndrey Smirnov2019-02-271-3/+3
|/ | | | | | | | | | | | | Original code was written to exit early on ehci_register()'s success. As a part of e3eb0c729b, however, it was modified to to early exit on failure instead. This resulted in VBUS being erroneously disabled after EHCI controller was added, thus breaking USB on some i.MX boards (confirmed on ZII's RDU2). Fixes: e3eb0c729b ("usb: host: ehci: add ehci_unregister()") Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Cc: Vivien Didelot <vivien.didelot@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/misc'Sascha Hauer2019-01-151-5/+0
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| * usbgadget: dfu: remove useless break in the switch statementLadislav Michl2019-01-101-5/+0
| | | | | | | | | | Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | Merge branch 'for-next/fastboot'Sascha Hauer2019-01-151-83/+153
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| * usb: gadget: fastboot: print fastboot messages also to the logsSascha Hauer2018-12-071-2/+5
| | | | | | | | | | | | | | It's nice to also see on the barebox side what is going on with fastboot, so print the messages to the logs also. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * usb: gadget: fastboot: simplify rebootSascha Hauer2018-12-071-7/+1
| | | | | | | | | | | | | | | | Now that we end the fastboot session when shutting down barebox we can call restart_machine() directly and not in the completion callback of the answer request. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * usb: gadget: fastboot: be more informative on bootingSascha Hauer2018-12-071-9/+7
| | | | | | | | | | | | | | | | | | We used to end the fastboot session once we received the boot command. Now that we end the session during shutdown we can do better: We can end the session once we actually shutdown, or more importantly in the case of an error. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * usb: gadget: fastboot: tell host that we are going to shutdownSascha Hauer2018-12-071-0/+43
| | | | | | | | | | | | | | | | | | Some commands like booting a kernel will trigger a shutdown of barebox, but the host will never notice and timeout later. Be more friendly and tell the host we are going to shutdown and end the current fastboot session. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * usb: gadget: fastboot: remove unnecessary context settingSascha Hauer2018-12-071-1/+0
| | | | | | | | | | | | | | | | | | Instead of setting the context for in_req we have set the context for out_req twice. This didn't trigger an error because we haven't used the context. So instead of fixing it we can equally well just remove it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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