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* 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>
* | 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: host: ehci-atmel: unregister host on device removeSascha Hauer2018-10-291-1/+5
| | | | | | | The ehci code does DMA and really must be properly stopped when we leave barebox, so call ehci_unregister on device removal. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: host: ehci: do not use dev->privSascha Hauer2018-10-292-6/+19
| | | | | | | | | | | | | | An ehci can be registered with ehci_register which is passed a struct device_d *. In that case the priv pointer may already be used by the caller, so we must not use it in the ehci code. At least for the Atmel ehci driver this fixes a bug, here dev->priv is set two times to different values. Since we need dev->priv in the ehci code to get the controller in ehci_detect() we can no longer implement that without the help of the caller, hence we eport ehci_detect() and epect it to be called by the code which registers a ehci host. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: host: ehci: add ehci_unregister()Sascha Hauer2018-10-292-5/+28
| | | | | | | | | ehci_register() allocates data and registers a ehci host. Add ehci_unregister() to properly halt the controller and to free the memory again.. To do so, change ehci_register() to return the ehci host rather than an error code. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: host: ehci: rename ehci_priv to ehci_hostSascha Hauer2018-10-261-21/+21
| | | | | | | As we are going to export the structure as a cookie to others rename it to ehci_host. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: echi-atmel: Add DT supportAndrey Smirnov2017-03-301-1/+10
| | | | | | Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb/host: Allow USB_OHCI_AT91 even if USB_OHCI is disabledAndrey Smirnov2017-03-301-4/+1
| | | | | | | | | | | When probing devices from DT, AT91 SoCs rely on OHCI driver to setup various GPIO (e.g. VBUS enabled) for EHCI block as well. So enable USB_OHCI_AT91 to be selected even if USB_OHCI is unavailible (due to its dependency on !MMU). Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ohci-at91: Add DT supportAndrey Smirnov2017-03-301-2/+91
| | | | | | Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: echi-atmel: Check result of ehci_register()Andrey Smirnov2017-03-091-3/+1
| | | | | Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-atmel: Zero ehci_data before using itAndrey Smirnov2017-03-091-1/+1
| | | | | | | | | Zero ehci_data before using it as an argument for echi_register, otherwise bogus values (some of which are interpreted as callbacks) will be passed through, resulting in illegal memory accesses. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: echi-atmel: Convert global variables to private dataAndrey Smirnov2017-03-091-16/+26
| | | | | Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-atmel: Check result of clk_enable()Andrey Smirnov2017-03-091-4/+17
| | | | | Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ohci-at91: Check result of clk_enable()Andrey Smirnov2017-03-091-4/+20
| | | | | Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ohci-at91: Convert global variables to private dataAndrey Smirnov2017-03-091-22/+37
| | | | | | | | Store driver data in per-device private variable as opposed to storing it in global vairables. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ohci-at91: Check result of clk_get()Andrey Smirnov2017-03-091-0/+9
| | | | | Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci: pass full speed devices to companion controllerPeter Mamonov2017-01-301-6/+21
| | | | | | | | | | | | | | | According to the "Enhanced Host Controller Interface Specification for Universal Serial Bus" after a USB port reset the EHCI Driver checks the PortEnable bit in the PORTSC register. If set to a one, the connected device is a high-speed device [...]. At the time the EHCI Driver receives the port reset and enable request the LineStatus bits might indicate a low-speed device. Additionally, when the port reset process is complete, the PortEnable field may indicate that a full-speed device is attached. In either case the EHCI driver sets the PortOwner bit in the PORTSC register to a one to release port ownership to a companion host controller. Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci: forward phy given in registration data to hostSascha Hauer2016-09-291-0/+1
| | | | | | | Allow to pass a phy in the registration data and forward it to the usb_host structure. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci: honour timeout valueSascha Hauer2016-07-061-4/+4
| | | | | | | usb_control_msg() and usb_bulk_msg() have a timeout parameter. Honour this in the ehci driver instead of using a default timeout. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/misc'Sascha Hauer2016-03-111-19/+2
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| * ehci-hcd: preserve DTC in QH for interrupt transactionsAleksey Kuleshov2016-03-101-11/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | In Linux ehci-q Data Toggle Control bit for interrupt transactions is preserved in Queue Head (EHCI 3.6.2). So don't set 14's bit in qh_endpt1 and don't manage toggle bit anywhere in int transactions. This fixes an idle issue for USB keyboards, where keys were physically changed but barebox haven't seen them in polling until the next USB keyboard polling occurs. Signed-off-by: Aleksey Kuleshov <rndfax@yandex.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * ehci-hcd: remove useless timeoutAleksey Kuleshov2016-03-101-8/+0
| | | | | | | | | | | | | | This is just a regular iteration loop so no timeout needed Signed-off-by: Aleksey Kuleshov <rndfax@yandex.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | driver: replace dev_request_mem_region with dev_request_mem_resourceSascha Hauer2016-03-074-10/+26
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_request_mem_region doesn't work properly one some SoCs on which PTR_ERR() values clash with valid return values from dev_request_mem_region. Replace them with dev_request_mem_resource where possible. This patch has been generated with the following semantic patch: // <smpl> @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { ... - return PTR_ERR(io); -} + return PTR_ERR(iores); +} +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) - return PTR_ERR(io); -} + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { - ret = PTR_ERR(io); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { + ret = PTR_ERR(iores); ... } +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ identifier func; @@ func(...) { <+... struct resource *iores; -struct resource *iores; ...+> } // </smpl> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-hcd: Use regular mdelay()Sascha Hauer2015-10-141-1/+3
| | | | | | | The USB core will make sure we do not re-enter the ehci driver, so we can use regular mdelay instead of mdelay_non_interruptible(). Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Revert "usb: ehci-hcd: detect re-entrance"Sascha Hauer2015-10-141-38/+4
| | | | | | | Now that the USB core makes sure that we do not re-enter USB drivers we no longer have to detect re-entrancy in the ehci driver. This reverts commit 8426cc641dbd9c4e948ae4b5f3f89463e969eb1e.
* Revert "usb: ehci-hcd: use mdelay_non_interruptible()"Sascha Hauer2015-10-141-3/+3
| | | | | | | | Now that the USB core makes sure that we do not re-enter USB drivers we no longer need mdelay_non_interruptible() but can use regular mdelay() again. This reverts commit 4cfd909412e6ecfcef21c1ffabc8d515b39a0f85.
* usb: ehci-hcd: use mdelay_non_interruptible()Peter Mamonov2015-10-021-3/+3
| | | | | Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-hcd: detect re-entrancePeter Mamonov2015-10-021-4/+38
| | | | | Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-hcd: port periodic transactions implementation from the u-bootPeter Mamonov2015-10-022-2/+415
| | | | | Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-hcd: use is_timeout_non_interruptible()Peter Mamonov2015-09-101-2/+2
| | | | | | | | | Use is_timeout_non_interruptible() intead of is_timeout() to avoid re-entering ehci-hcd functions from pollers, registered by usb drivers. Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-hcd: add OF bindingsPeter Mamonov2015-09-041-4/+18
| | | | | Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci: prevent bad PORTSC register accessKuo-Jung Su2015-08-261-6/+15
| | | | | | | | | | | | | | | | | 1. The 'index' of ehci_submit_root() is not always > 0. e.g. While it gets invoked from usb_get_descriptor(), the 'index' is always a '0'. (See ch.9 of USB2.0) 2. The PORTSC register is not always required, and thus it should only report a port error when necessary. It would cause a port scan failure if the ehci_submit_root() always gets terminated by a port error. Signed-off-by: Kuo-Jung Su <dantesu@faraday-tech.com> Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci: replace multiple use of le16_to_cpu(req->index) with variableKuo-Jung Su2015-08-261-9/+10
| | | | | | | | This is part of U-Boot commit: 7d9aa8f usb: Add new command to set USB 2.0 port test modes Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* usb: ehci-hcd: initialize ehci->qh_list[] with zerosPeter Mamonov2015-08-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Without this initialization ehci->qh_list[0].qh_endpt2 is left uninitialized, which causes problems with some EHCI host controllers. Das u-boot uses the same strategy: static int ehci_common_init(struct ehci_ctrl *ctrl, uint tweaks) { ... qh_list = &ctrl->qh_list; /* Set head of reclaim list */ memset(qh_list, 0, sizeof(*qh_list)); qh_list->qh_link = cpu_to_hc32((unsigned long)qh_list | QH_LINK_TYPE_QH); qh_list->qh_endpt1 = cpu_to_hc32(QH_ENDPT1_H(1) | QH_ENDPT1_EPS(USB_SPEED_HIGH)); qh_list->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); qh_list->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); qh_list->qh_overlay.qt_token = cpu_to_hc32(QT_TOKEN_STATUS(QT_TOKEN_STATUS_HALTED)); ... } Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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