usb:cdns3 Add Cadence USB3 DRD Driver
This patch introduce new Cadence USBSS DRD driver to Linux kernel. The Cadence USBSS 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 specification, so it works with standard XHCI Linux driver. Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Pawel Laszczak
Felipe Balbi
Родитель
c2af6b0780
Коммит
8bc1901ca7
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@ -113,6 +113,8 @@ source "drivers/usb/usbip/Kconfig"
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endif
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source "drivers/usb/cdns3/Kconfig"
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source "drivers/usb/mtu3/Kconfig"
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source "drivers/usb/musb/Kconfig"
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@ -13,6 +13,8 @@ obj-$(CONFIG_USB_DWC3) += dwc3/
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obj-$(CONFIG_USB_DWC2) += dwc2/
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obj-$(CONFIG_USB_ISP1760) += isp1760/
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obj-$(CONFIG_USB_CDNS3) += cdns3/
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obj-$(CONFIG_USB_MON) += mon/
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obj-$(CONFIG_USB_MTU3) += mtu3/
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@ -0,0 +1,44 @@
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config USB_CDNS3
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tristate "Cadence USB3 Dual-Role Controller"
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depends on USB_SUPPORT && (USB || USB_GADGET) && HAS_DMA
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help
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Say Y here if your system has a Cadence USB3 dual-role controller.
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It supports: dual-role switch, Host-only, and Peripheral-only.
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If you choose to build this driver is a dynamically linked
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as module, the module will be called cdns3.ko.
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if USB_CDNS3
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config USB_CDNS3_GADGET
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bool "Cadence USB3 device controller"
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depends on USB_GADGET
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help
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Say Y here to enable device controller functionality of the
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Cadence USBSS-DEV driver.
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This controller supports FF, HS and SS mode. It doesn't support
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LS and SSP mode.
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config USB_CDNS3_HOST
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bool "Cadence USB3 host controller"
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depends on USB_XHCI_HCD
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help
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Say Y here to enable host controller functionality of the
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Cadence driver.
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Host controller is compliant with XHCI so it will use
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standard XHCI driver.
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config USB_CDNS3_PCI_WRAP
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tristate "Cadence USB3 support on PCIe-based platforms"
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depends on USB_PCI && ACPI
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default USB_CDNS3
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help
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If you're using the USBSS Core IP with a PCIe, please say
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'Y' or 'M' here.
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If you choose to build this driver as module it will
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be dynamically linked and module will be called cdns3-pci.ko
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endif
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@ -0,0 +1,14 @@
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# SPDX-License-Identifier: GPL-2.0
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# define_trace.h needs to know how to find our header
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CFLAGS_trace.o := -I$(src)
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cdns3-y := core.o drd.o
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obj-$(CONFIG_USB_CDNS3) += cdns3.o
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ifneq ($(CONFIG_DEBUG_FS),)
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cdns3-y += debugfs.o
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endif
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cdns3-$(CONFIG_USB_CDNS3_GADGET) += gadget.o ep0.o trace.o
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cdns3-$(CONFIG_USB_CDNS3_HOST) += host.o
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obj-$(CONFIG_USB_CDNS3_PCI_WRAP) += cdns3-pci-wrap.o
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@ -0,0 +1,157 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Cadence USBSS PCI Glue driver
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*
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* Copyright (C) 2018-2019 Cadence.
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*
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* Author: Pawel Laszczak <pawell@cadence.com>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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struct cdns3_wrap {
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struct platform_device *plat_dev;
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struct pci_dev *hg_dev;
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struct resource dev_res[6];
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};
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#define RES_IRQ_HOST_ID 0
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#define RES_IRQ_PERIPHERAL_ID 1
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#define RES_IRQ_OTG_ID 2
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#define RES_HOST_ID 3
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#define RES_DEV_ID 4
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#define RES_DRD_ID 5
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#define PCI_BAR_HOST 0
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#define PCI_BAR_DEV 2
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#define PCI_BAR_OTG 4
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#define PCI_DEV_FN_HOST_DEVICE 0
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#define PCI_DEV_FN_OTG 1
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#define PCI_DRIVER_NAME "cdns3-pci-usbss"
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#define PLAT_DRIVER_NAME "cdns-usb3"
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#define CDNS_VENDOR_ID 0x17cd
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#define CDNS_DEVICE_ID 0x0100
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static int cdns3_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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struct platform_device_info plat_info;
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struct cdns3_wrap *wrap;
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struct resource *res;
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int err;
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/*
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* for GADGET/HOST PCI (devfn) function number is 0,
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* for OTG PCI (devfn) function number is 1
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*/
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if (!id || pdev->devfn != PCI_DEV_FN_HOST_DEVICE)
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return -EINVAL;
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err = pcim_enable_device(pdev);
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if (err) {
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dev_err(&pdev->dev, "Enabling PCI device has failed %d\n", err);
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return err;
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}
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pci_set_master(pdev);
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wrap = devm_kzalloc(&pdev->dev, sizeof(*wrap), GFP_KERNEL);
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if (!wrap) {
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pci_disable_device(pdev);
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return -ENOMEM;
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}
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/* function 0: host(BAR_0) + device(BAR_1) + otg(BAR_2)). */
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dev_dbg(&pdev->dev, "Initialize Device resources\n");
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res = wrap->dev_res;
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res[RES_DEV_ID].start = pci_resource_start(pdev, PCI_BAR_DEV);
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res[RES_DEV_ID].end = pci_resource_end(pdev, PCI_BAR_DEV);
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res[RES_DEV_ID].name = "dev";
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res[RES_DEV_ID].flags = IORESOURCE_MEM;
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dev_dbg(&pdev->dev, "USBSS-DEV physical base addr: %pa\n",
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&res[RES_DEV_ID].start);
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res[RES_HOST_ID].start = pci_resource_start(pdev, PCI_BAR_HOST);
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res[RES_HOST_ID].end = pci_resource_end(pdev, PCI_BAR_HOST);
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res[RES_HOST_ID].name = "xhci";
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res[RES_HOST_ID].flags = IORESOURCE_MEM;
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dev_dbg(&pdev->dev, "USBSS-XHCI physical base addr: %pa\n",
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&res[RES_HOST_ID].start);
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res[RES_DRD_ID].start = pci_resource_start(pdev, PCI_BAR_OTG);
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res[RES_DRD_ID].end = pci_resource_end(pdev, PCI_BAR_OTG);
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res[RES_DRD_ID].name = "otg";
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res[RES_DRD_ID].flags = IORESOURCE_MEM;
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dev_dbg(&pdev->dev, "USBSS-DRD physical base addr: %pa\n",
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&res[RES_DRD_ID].start);
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/* Interrupt for XHCI */
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wrap->dev_res[RES_IRQ_HOST_ID].start = pdev->irq;
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wrap->dev_res[RES_IRQ_HOST_ID].name = "host";
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wrap->dev_res[RES_IRQ_HOST_ID].flags = IORESOURCE_IRQ;
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/* Interrupt device. It's the same as for HOST. */
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wrap->dev_res[RES_IRQ_PERIPHERAL_ID].start = pdev->irq;
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wrap->dev_res[RES_IRQ_PERIPHERAL_ID].name = "peripheral";
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wrap->dev_res[RES_IRQ_PERIPHERAL_ID].flags = IORESOURCE_IRQ;
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/* Interrupt for OTG/DRD. */
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wrap->dev_res[RES_IRQ_OTG_ID].start = pdev->irq;
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wrap->dev_res[RES_IRQ_OTG_ID].name = "otg";
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wrap->dev_res[RES_IRQ_OTG_ID].flags = IORESOURCE_IRQ;
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/* set up platform device info */
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memset(&plat_info, 0, sizeof(plat_info));
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plat_info.parent = &pdev->dev;
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plat_info.fwnode = pdev->dev.fwnode;
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plat_info.name = PLAT_DRIVER_NAME;
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plat_info.id = pdev->devfn;
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plat_info.res = wrap->dev_res;
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plat_info.num_res = ARRAY_SIZE(wrap->dev_res);
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plat_info.dma_mask = pdev->dma_mask;
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/* register platform device */
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wrap->plat_dev = platform_device_register_full(&plat_info);
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if (IS_ERR(wrap->plat_dev)) {
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pci_disable_device(pdev);
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return PTR_ERR(wrap->plat_dev);
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}
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pci_set_drvdata(pdev, wrap);
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return err;
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}
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static void cdns3_pci_remove(struct pci_dev *pdev)
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{
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struct cdns3_wrap *wrap = (struct cdns3_wrap *)pci_get_drvdata(pdev);
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platform_device_unregister(wrap->plat_dev);
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}
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static const struct pci_device_id cdns3_pci_ids[] = {
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{ PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), },
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{ 0, }
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};
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static struct pci_driver cdns3_pci_driver = {
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.name = PCI_DRIVER_NAME,
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.id_table = cdns3_pci_ids,
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.probe = cdns3_pci_probe,
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.remove = cdns3_pci_remove,
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};
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module_pci_driver(cdns3_pci_driver);
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MODULE_DEVICE_TABLE(pci, cdns3_pci_ids);
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MODULE_AUTHOR("Pawel Laszczak <pawell@cadence.com>");
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("Cadence USBSS PCI wrapperr");
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@ -0,0 +1,543 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Cadence USBSS DRD Driver.
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*
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* Copyright (C) 2018-2019 Cadence.
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* Copyright (C) 2017-2018 NXP
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* Copyright (C) 2019 Texas Instruments
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*
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* Author: Peter Chen <peter.chen@nxp.com>
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* Pawel Laszczak <pawell@cadence.com>
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* Roger Quadros <rogerq@ti.com>
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*/
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#include <linux/dma-mapping.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/pm_runtime.h>
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#include "gadget.h"
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#include "core.h"
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#include "host-export.h"
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#include "gadget-export.h"
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#include "drd.h"
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#include "debug.h"
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/**
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* cdns3_handshake - spin reading until handshake completes or fails
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* @ptr: address of device controller register to be read
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* @mask: bits to look at in result of read
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* @done: value of those bits when handshake succeeds
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* @usec: timeout in microseconds
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*
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* Returns negative errno, or zero on success
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*
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* Success happens when the "mask" bits have the specified value (hardware
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* handshake done). There are two failure modes: "usec" have passed (major
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* hardware flakeout), or the register reads as all-ones (hardware removed).
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*/
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int cdns3_handshake(void __iomem *ptr, u32 mask, u32 done, int usec)
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{
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u32 result;
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do {
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result = readl(ptr);
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if (result == ~(u32)0) /* card removed */
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return -ENODEV;
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result &= mask;
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if (result == done)
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return 0;
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udelay(1);
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usec--;
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} while (usec > 0);
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return -ETIMEDOUT;
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}
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static inline
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struct cdns3_role_driver *cdns3_get_current_role_driver(struct cdns3 *cdns)
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{
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WARN_ON(cdns->role >= CDNS3_ROLE_END || !cdns->roles[cdns->role]);
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return cdns->roles[cdns->role];
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}
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static int cdns3_role_start(struct cdns3 *cdns, enum cdns3_roles role)
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{
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int ret;
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if (WARN_ON(role >= CDNS3_ROLE_END))
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return 0;
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if (!cdns->roles[role])
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return -ENXIO;
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if (cdns->roles[role]->state == CDNS3_ROLE_STATE_ACTIVE)
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return 0;
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mutex_lock(&cdns->mutex);
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cdns->role = role;
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ret = cdns->roles[role]->start(cdns);
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if (!ret)
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cdns->roles[role]->state = CDNS3_ROLE_STATE_ACTIVE;
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mutex_unlock(&cdns->mutex);
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return ret;
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}
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void cdns3_role_stop(struct cdns3 *cdns)
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{
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enum cdns3_roles role = cdns->role;
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if (role >= CDNS3_ROLE_END) {
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WARN_ON(role > CDNS3_ROLE_END);
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return;
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}
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if (cdns->roles[role]->state == CDNS3_ROLE_STATE_INACTIVE)
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return;
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mutex_lock(&cdns->mutex);
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cdns->roles[role]->stop(cdns);
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cdns->roles[role]->state = CDNS3_ROLE_STATE_INACTIVE;
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mutex_unlock(&cdns->mutex);
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}
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static void cdns3_exit_roles(struct cdns3 *cdns)
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{
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cdns3_role_stop(cdns);
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cdns3_drd_exit(cdns);
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}
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enum cdns3_roles cdsn3_get_real_role(struct cdns3 *cdns);
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static int cdns3_idle_role_start(struct cdns3 *cnds)
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{ /* Hold PHY in RESET */
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return 0;
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}
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static void cdns3_idle_role_stop(struct cdns3 *cnds)
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{
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/* Program Lane swap and bring PHY out of RESET */
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}
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static int cdns3_idle_init(struct cdns3 *cdns)
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{
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struct cdns3_role_driver *rdrv;
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rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
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if (!rdrv)
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return -ENOMEM;
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rdrv->start = cdns3_idle_role_start;
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rdrv->stop = cdns3_idle_role_stop;
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rdrv->state = CDNS3_ROLE_STATE_INACTIVE;
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rdrv->suspend = NULL;
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rdrv->resume = NULL;
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rdrv->name = "idle";
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cdns->roles[CDNS3_ROLE_IDLE] = rdrv;
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return 0;
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}
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/**
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* cdns3_core_init_role - initialize role of operation
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* @cdns: Pointer to cdns3 structure
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*
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* Returns 0 on success otherwise negative errno
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*/
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static int cdns3_core_init_role(struct cdns3 *cdns)
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{
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struct device *dev = cdns->dev;
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enum usb_dr_mode best_dr_mode;
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enum usb_dr_mode dr_mode;
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int ret = 0;
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dr_mode = usb_get_dr_mode(dev);
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cdns->role = CDNS3_ROLE_END;
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/*
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* If driver can't read mode by means of usb_get_dr_mode function then
|
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* chooses mode according with Kernel configuration. This setting
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* can be restricted later depending on strap pin configuration.
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*/
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if (dr_mode == USB_DR_MODE_UNKNOWN) {
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if (IS_ENABLED(CONFIG_USB_CDNS3_HOST) &&
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IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
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dr_mode = USB_DR_MODE_OTG;
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else if (IS_ENABLED(CONFIG_USB_CDNS3_HOST))
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dr_mode = USB_DR_MODE_HOST;
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else if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET))
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dr_mode = USB_DR_MODE_PERIPHERAL;
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}
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/*
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* At this point cdns->dr_mode contains strap configuration.
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* Driver try update this setting considering kernel configuration
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*/
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best_dr_mode = cdns->dr_mode;
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ret = cdns3_idle_init(cdns);
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if (ret)
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return ret;
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if (dr_mode == USB_DR_MODE_OTG) {
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best_dr_mode = cdns->dr_mode;
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} else if (cdns->dr_mode == USB_DR_MODE_OTG) {
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best_dr_mode = dr_mode;
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} else if (cdns->dr_mode != dr_mode) {
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dev_err(dev, "Incorrect DRD configuration\n");
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return -EINVAL;
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}
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dr_mode = best_dr_mode;
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if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_HOST) {
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ret = cdns3_host_init(cdns);
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if (ret) {
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dev_err(dev, "Host initialization failed with %d\n",
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ret);
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goto err;
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}
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}
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|
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if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) {
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ret = cdns3_gadget_init(cdns);
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if (ret) {
|
||||
dev_err(dev, "Device initialization failed with %d\n",
|
||||
ret);
|
||||
goto err;
|
||||
}
|
||||
}
|
||||
|
||||
cdns->desired_dr_mode = dr_mode;
|
||||
cdns->dr_mode = dr_mode;
|
||||
|
||||
/*
|
||||
* desired_dr_mode might have changed so we need to update
|
||||
* the controller configuration"?
|
||||
*/
|
||||
ret = cdns3_drd_update_mode(cdns);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
cdns->role = cdsn3_get_real_role(cdns);
|
||||
|
||||
ret = cdns3_role_start(cdns, cdns->role);
|
||||
if (ret) {
|
||||
dev_err(dev, "can't start %s role\n",
|
||||
cdns3_get_current_role_driver(cdns)->name);
|
||||
goto err;
|
||||
}
|
||||
|
||||
return ret;
|
||||
err:
|
||||
cdns3_exit_roles(cdns);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdsn3_get_real_role - get real role of controller based on hardware settings.
|
||||
* @cdns: Pointer to cdns3 structure
|
||||
*
|
||||
* Returns role
|
||||
*/
|
||||
enum cdns3_roles cdsn3_get_real_role(struct cdns3 *cdns)
|
||||
{
|
||||
enum cdns3_roles role;
|
||||
int id, vbus;
|
||||
|
||||
if (cdns->current_dr_mode != USB_DR_MODE_OTG)
|
||||
goto not_otg;
|
||||
|
||||
id = cdns3_get_id(cdns);
|
||||
vbus = cdns3_get_vbus(cdns);
|
||||
|
||||
/*
|
||||
* Role change state machine
|
||||
* Inputs: ID, VBUS
|
||||
* Previous state: cdns->role
|
||||
* Next state: role
|
||||
*/
|
||||
role = cdns->role;
|
||||
|
||||
switch (role) {
|
||||
case CDNS3_ROLE_IDLE: /* from IDLE, we can change to HOST or GADGET */
|
||||
if (!id)
|
||||
role = CDNS3_ROLE_HOST;
|
||||
else if (vbus)
|
||||
role = CDNS3_ROLE_GADGET;
|
||||
break;
|
||||
case CDNS3_ROLE_HOST: /* from HOST, we can only change to IDLE */
|
||||
if (id)
|
||||
role = CDNS3_ROLE_IDLE;
|
||||
break;
|
||||
case CDNS3_ROLE_GADGET: /* from GADGET, we can only change to IDLE */
|
||||
if (!vbus)
|
||||
role = CDNS3_ROLE_IDLE;
|
||||
break;
|
||||
case CDNS3_ROLE_END: /* only at initialization, move to IDLE */
|
||||
role = CDNS3_ROLE_IDLE;
|
||||
break;
|
||||
}
|
||||
|
||||
dev_dbg(cdns->dev, "role %d -> %d\n", cdns->role, role);
|
||||
|
||||
return role;
|
||||
|
||||
not_otg:
|
||||
if (cdns3_is_host(cdns))
|
||||
role = CDNS3_ROLE_HOST;
|
||||
if (cdns3_is_device(cdns))
|
||||
role = CDNS3_ROLE_GADGET;
|
||||
|
||||
return role;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_role_switch - work queue handler for role switch
|
||||
*
|
||||
* @work: work queue item structure
|
||||
*
|
||||
* Handles below events:
|
||||
* - Role switch for dual-role devices
|
||||
* - CDNS3_ROLE_GADGET <--> CDNS3_ROLE_END for peripheral-only devices
|
||||
*/
|
||||
static void cdns3_role_switch(struct work_struct *work)
|
||||
{
|
||||
enum cdns3_roles role = CDNS3_ROLE_END;
|
||||
struct cdns3_role_driver *role_drv;
|
||||
enum cdns3_roles current_role;
|
||||
struct cdns3 *cdns;
|
||||
int ret = 0;
|
||||
|
||||
cdns = container_of(work, struct cdns3, role_switch_wq);
|
||||
|
||||
pm_runtime_get_sync(cdns->dev);
|
||||
|
||||
role = cdsn3_get_real_role(cdns);
|
||||
|
||||
role_drv = cdns3_get_current_role_driver(cdns);
|
||||
|
||||
/* Disable current role if requested from debugfs */
|
||||
if (cdns->debug_disable && role_drv->state == CDNS3_ROLE_STATE_ACTIVE) {
|
||||
cdns3_role_stop(cdns);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/* Do nothing if nothing changed */
|
||||
if (cdns->role == role && role_drv->state == CDNS3_ROLE_STATE_ACTIVE)
|
||||
goto exit;
|
||||
|
||||
cdns3_role_stop(cdns);
|
||||
|
||||
role = cdsn3_get_real_role(cdns);
|
||||
|
||||
current_role = cdns->role;
|
||||
dev_dbg(cdns->dev, "Switching role");
|
||||
|
||||
ret = cdns3_role_start(cdns, role);
|
||||
if (ret) {
|
||||
/* Back to current role */
|
||||
dev_err(cdns->dev, "set %d has failed, back to %d\n",
|
||||
role, current_role);
|
||||
ret = cdns3_role_start(cdns, current_role);
|
||||
if (ret)
|
||||
dev_err(cdns->dev, "back to %d failed too\n",
|
||||
current_role);
|
||||
}
|
||||
exit:
|
||||
pm_runtime_put_sync(cdns->dev);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_probe - probe for cdns3 core device
|
||||
* @pdev: Pointer to cdns3 core platform device
|
||||
*
|
||||
* Returns 0 on success otherwise negative errno
|
||||
*/
|
||||
static int cdns3_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct resource *res;
|
||||
struct cdns3 *cdns;
|
||||
void __iomem *regs;
|
||||
int ret;
|
||||
|
||||
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
|
||||
if (ret) {
|
||||
dev_err(dev, "error setting dma mask: %d\n", ret);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
cdns = devm_kzalloc(dev, sizeof(*cdns), GFP_KERNEL);
|
||||
if (!cdns)
|
||||
return -ENOMEM;
|
||||
|
||||
cdns->dev = dev;
|
||||
|
||||
platform_set_drvdata(pdev, cdns);
|
||||
|
||||
res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "host");
|
||||
if (!res) {
|
||||
dev_err(dev, "missing host IRQ\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
cdns->xhci_res[0] = *res;
|
||||
|
||||
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "xhci");
|
||||
if (!res) {
|
||||
dev_err(dev, "couldn't get xhci resource\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
cdns->xhci_res[1] = *res;
|
||||
|
||||
cdns->dev_irq = platform_get_irq_byname(pdev, "peripheral");
|
||||
if (cdns->dev_irq == -EPROBE_DEFER)
|
||||
return cdns->dev_irq;
|
||||
|
||||
if (cdns->dev_irq < 0)
|
||||
dev_err(dev, "couldn't get peripheral irq\n");
|
||||
|
||||
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dev");
|
||||
regs = devm_ioremap_resource(dev, res);
|
||||
if (IS_ERR(regs)) {
|
||||
dev_err(dev, "couldn't iomap dev resource\n");
|
||||
return PTR_ERR(regs);
|
||||
}
|
||||
cdns->dev_regs = regs;
|
||||
|
||||
cdns->otg_irq = platform_get_irq_byname(pdev, "otg");
|
||||
if (cdns->otg_irq == -EPROBE_DEFER)
|
||||
return cdns->otg_irq;
|
||||
|
||||
if (cdns->otg_irq < 0) {
|
||||
dev_err(dev, "couldn't get otg irq\n");
|
||||
return cdns->otg_irq;
|
||||
}
|
||||
|
||||
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otg");
|
||||
if (!res) {
|
||||
dev_err(dev, "couldn't get otg resource\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
cdns->otg_res = *res;
|
||||
|
||||
mutex_init(&cdns->mutex);
|
||||
|
||||
cdns->usb2_phy = devm_phy_optional_get(dev, "cdns3,usb2-phy");
|
||||
if (IS_ERR(cdns->usb2_phy))
|
||||
return PTR_ERR(cdns->usb2_phy);
|
||||
|
||||
phy_init(cdns->usb2_phy);
|
||||
ret = phy_init(cdns->usb2_phy);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
cdns->usb3_phy = devm_phy_optional_get(dev, "cdns3,usb3-phy");
|
||||
if (IS_ERR(cdns->usb3_phy))
|
||||
return PTR_ERR(cdns->usb3_phy);
|
||||
|
||||
phy_init(cdns->usb3_phy);
|
||||
ret = phy_init(cdns->usb3_phy);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = phy_power_on(cdns->usb2_phy);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = phy_power_on(cdns->usb3_phy);
|
||||
if (ret)
|
||||
goto err1;
|
||||
|
||||
INIT_WORK(&cdns->role_switch_wq, cdns3_role_switch);
|
||||
|
||||
ret = cdns3_drd_init(cdns);
|
||||
if (ret)
|
||||
goto err2;
|
||||
|
||||
ret = cdns3_core_init_role(cdns);
|
||||
if (ret)
|
||||
goto err2;
|
||||
|
||||
cdns3_debugfs_init(cdns);
|
||||
device_set_wakeup_capable(dev, true);
|
||||
pm_runtime_set_active(dev);
|
||||
pm_runtime_enable(dev);
|
||||
|
||||
/*
|
||||
* The controller needs less time between bus and controller suspend,
|
||||
* and we also needs a small delay to avoid frequently entering low
|
||||
* power mode.
|
||||
*/
|
||||
pm_runtime_set_autosuspend_delay(dev, 20);
|
||||
pm_runtime_mark_last_busy(dev);
|
||||
pm_runtime_use_autosuspend(dev);
|
||||
dev_dbg(dev, "Cadence USB3 core: probe succeed\n");
|
||||
|
||||
return 0;
|
||||
|
||||
err2:
|
||||
phy_power_off(cdns->usb3_phy);
|
||||
|
||||
err1:
|
||||
phy_power_off(cdns->usb2_phy);
|
||||
phy_exit(cdns->usb2_phy);
|
||||
phy_exit(cdns->usb3_phy);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_remove - unbind drd driver and clean up
|
||||
* @pdev: Pointer to Linux platform device
|
||||
*
|
||||
* Returns 0 on success otherwise negative errno
|
||||
*/
|
||||
static int cdns3_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct cdns3 *cdns = platform_get_drvdata(pdev);
|
||||
|
||||
pm_runtime_get_sync(&pdev->dev);
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
pm_runtime_put_noidle(&pdev->dev);
|
||||
cdns3_debugfs_exit(cdns);
|
||||
cdns3_exit_roles(cdns);
|
||||
phy_power_off(cdns->usb2_phy);
|
||||
phy_power_off(cdns->usb3_phy);
|
||||
phy_exit(cdns->usb2_phy);
|
||||
phy_exit(cdns->usb3_phy);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static const struct of_device_id of_cdns3_match[] = {
|
||||
{ .compatible = "cdns,usb3" },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, of_cdns3_match);
|
||||
#endif
|
||||
|
||||
static struct platform_driver cdns3_driver = {
|
||||
.probe = cdns3_probe,
|
||||
.remove = cdns3_remove,
|
||||
.driver = {
|
||||
.name = "cdns-usb3",
|
||||
.of_match_table = of_match_ptr(of_cdns3_match),
|
||||
},
|
||||
};
|
||||
|
||||
module_platform_driver(cdns3_driver);
|
||||
|
||||
MODULE_ALIAS("platform:cdns3");
|
||||
MODULE_AUTHOR("Pawel Laszczak <pawell@cadence.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_DESCRIPTION("Cadence USB3 DRD Controller Driver");
|
||||
|
|
@ -0,0 +1,121 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Cadence USBSS DRD Header File.
|
||||
*
|
||||
* Copyright (C) 2017-2018 NXP
|
||||
* Copyright (C) 2018-2019 Cadence.
|
||||
*
|
||||
* Authors: Peter Chen <peter.chen@nxp.com>
|
||||
* Pawel Laszczak <pawell@cadence.com>
|
||||
*/
|
||||
#include <linux/usb/otg.h>
|
||||
|
||||
#ifndef __LINUX_CDNS3_CORE_H
|
||||
#define __LINUX_CDNS3_CORE_H
|
||||
|
||||
struct cdns3;
|
||||
enum cdns3_roles {
|
||||
CDNS3_ROLE_IDLE = 0,
|
||||
CDNS3_ROLE_HOST,
|
||||
CDNS3_ROLE_GADGET,
|
||||
CDNS3_ROLE_END,
|
||||
};
|
||||
|
||||
/**
|
||||
* struct cdns3_role_driver - host/gadget role driver
|
||||
* @start: start this role
|
||||
* @stop: stop this role
|
||||
* @suspend: suspend callback for this role
|
||||
* @resume: resume callback for this role
|
||||
* @irq: irq handler for this role
|
||||
* @name: role name string (host/gadget)
|
||||
* @state: current state
|
||||
*/
|
||||
struct cdns3_role_driver {
|
||||
int (*start)(struct cdns3 *cdns);
|
||||
void (*stop)(struct cdns3 *cdns);
|
||||
int (*suspend)(struct cdns3 *cdns, bool do_wakeup);
|
||||
int (*resume)(struct cdns3 *cdns, bool hibernated);
|
||||
const char *name;
|
||||
#define CDNS3_ROLE_STATE_INACTIVE 0
|
||||
#define CDNS3_ROLE_STATE_ACTIVE 1
|
||||
int state;
|
||||
};
|
||||
|
||||
#define CDNS3_XHCI_RESOURCES_NUM 2
|
||||
/**
|
||||
* struct cdns3 - Representation of Cadence USB3 DRD controller.
|
||||
* @dev: pointer to Cadence device struct
|
||||
* @xhci_regs: pointer to base of xhci registers
|
||||
* @xhci_res: the resource for xhci
|
||||
* @dev_regs: pointer to base of dev registers
|
||||
* @otg_res: the resource for otg
|
||||
* @otg_v0_regs: pointer to base of v0 otg registers
|
||||
* @otg_v1_regs: pointer to base of v1 otg registers
|
||||
* @otg_regs: pointer to base of otg registers
|
||||
* @otg_irq: irq number for otg controller
|
||||
* @dev_irq: irq number for device controller
|
||||
* @roles: array of supported roles for this controller
|
||||
* @role: current role
|
||||
* @host_dev: the child host device pointer for cdns3 core
|
||||
* @gadget_dev: the child gadget device pointer for cdns3 core
|
||||
* @usb2_phy: pointer to USB2 PHY
|
||||
* @usb3_phy: pointer to USB3 PHY
|
||||
* @role_switch_wq: work queue item for role switch
|
||||
* @wakeup_int: the wakeup interrupt
|
||||
* @mutex: the mutex for concurrent code at driver
|
||||
* @dr_mode: supported mode of operation it can be only Host, only Device
|
||||
* or OTG mode that allow to switch between Device and Host mode.
|
||||
* This field based on firmware setting, kernel configuration
|
||||
* and hardware configuration.
|
||||
* @current_dr_mode: current mode of operation when in dual-role mode
|
||||
* @desired_dr_mode: desired mode of operation when in dual-role mode.
|
||||
* This value can be changed during runtime.
|
||||
* Available options depends on dr_mode:
|
||||
* dr_mode | desired_dr_mode and current_dr_mode
|
||||
* ----------------------------------------------------------------
|
||||
* USB_DR_MODE_HOST | only USB_DR_MODE_HOST
|
||||
* USB_DR_MODE_PERIPHERAL | only USB_DR_MODE_PERIPHERAL
|
||||
* USB_DR_MODE_OTG | USB_DR_MODE_OTG or USB_DR_MODE_HOST or
|
||||
* | USB_DR_MODE_PERIPHERAL
|
||||
* Desired_dr_role can be changed by means of debugfs.
|
||||
* @root: debugfs root folder pointer
|
||||
* @debug_disable:
|
||||
*/
|
||||
struct cdns3 {
|
||||
struct device *dev;
|
||||
void __iomem *xhci_regs;
|
||||
struct resource xhci_res[CDNS3_XHCI_RESOURCES_NUM];
|
||||
struct cdns3_usb_regs __iomem *dev_regs;
|
||||
|
||||
struct resource otg_res;
|
||||
struct cdns3_otg_legacy_regs *otg_v0_regs;
|
||||
struct cdns3_otg_regs *otg_v1_regs;
|
||||
struct cdns3_otg_common_regs *otg_regs;
|
||||
#define CDNS3_CONTROLLER_V0 0
|
||||
#define CDNS3_CONTROLLER_V1 1
|
||||
u32 version;
|
||||
|
||||
int otg_irq;
|
||||
int dev_irq;
|
||||
struct cdns3_role_driver *roles[CDNS3_ROLE_END];
|
||||
enum cdns3_roles role;
|
||||
struct platform_device *host_dev;
|
||||
struct cdns3_device *gadget_dev;
|
||||
struct phy *usb2_phy;
|
||||
struct phy *usb3_phy;
|
||||
struct work_struct role_switch_wq;
|
||||
int wakeup_int:1;
|
||||
/* mutext used in workqueue*/
|
||||
struct mutex mutex;
|
||||
enum usb_dr_mode dr_mode;
|
||||
enum usb_dr_mode current_dr_mode;
|
||||
enum usb_dr_mode desired_dr_mode;
|
||||
struct dentry *root;
|
||||
int debug_disable:1;
|
||||
};
|
||||
|
||||
void cdns3_role_stop(struct cdns3 *cdns);
|
||||
int cdns3_handshake(void __iomem *ptr, u32 mask, u32 done, int usec);
|
||||
|
||||
#endif /* __LINUX_CDNS3_CORE_H */
|
||||
|
|
@ -0,0 +1,173 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Cadence USBSS DRD Driver.
|
||||
* Debug header file.
|
||||
*
|
||||
* Copyright (C) 2018-2019 Cadence.
|
||||
*
|
||||
* Author: Pawel Laszczak <pawell@cadence.com>
|
||||
*/
|
||||
#ifndef __LINUX_CDNS3_DEBUG
|
||||
#define __LINUX_CDNS3_DEBUG
|
||||
|
||||
#include "core.h"
|
||||
|
||||
static inline char *cdns3_decode_usb_irq(char *str,
|
||||
enum usb_device_speed speed,
|
||||
u32 usb_ists)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = sprintf(str, "IRQ %08x = ", usb_ists);
|
||||
|
||||
if (usb_ists & (USB_ISTS_CON2I | USB_ISTS_CONI)) {
|
||||
ret += sprintf(str + ret, "Connection %s\n",
|
||||
usb_speed_string(speed));
|
||||
}
|
||||
if (usb_ists & USB_ISTS_DIS2I || usb_ists & USB_ISTS_DISI)
|
||||
ret += sprintf(str + ret, "Disconnection ");
|
||||
if (usb_ists & USB_ISTS_L2ENTI)
|
||||
ret += sprintf(str + ret, "suspended ");
|
||||
if (usb_ists & USB_ISTS_L1ENTI)
|
||||
ret += sprintf(str + ret, "L1 enter ");
|
||||
if (usb_ists & USB_ISTS_L1EXTI)
|
||||
ret += sprintf(str + ret, "L1 exit ");
|
||||
if (usb_ists & USB_ISTS_L2ENTI)
|
||||
ret += sprintf(str + ret, "L2 enter ");
|
||||
if (usb_ists & USB_ISTS_L2EXTI)
|
||||
ret += sprintf(str + ret, "L2 exit ");
|
||||
if (usb_ists & USB_ISTS_U3EXTI)
|
||||
ret += sprintf(str + ret, "U3 exit ");
|
||||
if (usb_ists & USB_ISTS_UWRESI)
|
||||
ret += sprintf(str + ret, "Warm Reset ");
|
||||
if (usb_ists & USB_ISTS_UHRESI)
|
||||
ret += sprintf(str + ret, "Hot Reset ");
|
||||
if (usb_ists & USB_ISTS_U2RESI)
|
||||
ret += sprintf(str + ret, "Reset");
|
||||
|
||||
return str;
|
||||
}
|
||||
|
||||
static inline char *cdns3_decode_ep_irq(char *str,
|
||||
u32 ep_sts,
|
||||
const char *ep_name)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = sprintf(str, "IRQ for %s: %08x ", ep_name, ep_sts);
|
||||
|
||||
if (ep_sts & EP_STS_SETUP)
|
||||
ret += sprintf(str + ret, "SETUP ");
|
||||
if (ep_sts & EP_STS_IOC)
|
||||
ret += sprintf(str + ret, "IOC ");
|
||||
if (ep_sts & EP_STS_ISP)
|
||||
ret += sprintf(str + ret, "ISP ");
|
||||
if (ep_sts & EP_STS_DESCMIS)
|
||||
ret += sprintf(str + ret, "DESCMIS ");
|
||||
if (ep_sts & EP_STS_STREAMR)
|
||||
ret += sprintf(str + ret, "STREAMR ");
|
||||
if (ep_sts & EP_STS_MD_EXIT)
|
||||
ret += sprintf(str + ret, "MD_EXIT ");
|
||||
if (ep_sts & EP_STS_TRBERR)
|
||||
ret += sprintf(str + ret, "TRBERR ");
|
||||
if (ep_sts & EP_STS_NRDY)
|
||||
ret += sprintf(str + ret, "NRDY ");
|
||||
if (ep_sts & EP_STS_PRIME)
|
||||
ret += sprintf(str + ret, "PRIME ");
|
||||
if (ep_sts & EP_STS_SIDERR)
|
||||
ret += sprintf(str + ret, "SIDERRT ");
|
||||
if (ep_sts & EP_STS_OUTSMM)
|
||||
ret += sprintf(str + ret, "OUTSMM ");
|
||||
if (ep_sts & EP_STS_ISOERR)
|
||||
ret += sprintf(str + ret, "ISOERR ");
|
||||
if (ep_sts & EP_STS_IOT)
|
||||
ret += sprintf(str + ret, "IOT ");
|
||||
|
||||
return str;
|
||||
}
|
||||
|
||||
static inline char *cdns3_decode_epx_irq(char *str,
|
||||
char *ep_name,
|
||||
u32 ep_sts)
|
||||
{
|
||||
return cdns3_decode_ep_irq(str, ep_sts, ep_name);
|
||||
}
|
||||
|
||||
static inline char *cdns3_decode_ep0_irq(char *str,
|
||||
int dir,
|
||||
u32 ep_sts)
|
||||
{
|
||||
return cdns3_decode_ep_irq(str, ep_sts,
|
||||
dir ? "ep0IN" : "ep0OUT");
|
||||
}
|
||||
|
||||
/**
|
||||
* Debug a transfer ring.
|
||||
*
|
||||
* Prints out all TRBs in the endpoint ring, even those after the Link TRB.
|
||||
*.
|
||||
*/
|
||||
static inline char *cdns3_dbg_ring(struct cdns3_endpoint *priv_ep,
|
||||
struct cdns3_trb *ring, char *str)
|
||||
{
|
||||
dma_addr_t addr = priv_ep->trb_pool_dma;
|
||||
struct cdns3_trb *trb;
|
||||
int trb_per_sector;
|
||||
int ret = 0;
|
||||
int i;
|
||||
|
||||
trb_per_sector = GET_TRBS_PER_SEGMENT(priv_ep->type);
|
||||
|
||||
trb = &priv_ep->trb_pool[priv_ep->dequeue];
|
||||
ret += sprintf(str + ret, "\n\t\tRing contents for %s:", priv_ep->name);
|
||||
|
||||
ret += sprintf(str + ret,
|
||||
"\n\t\tRing deq index: %d, trb: %p (virt), 0x%llx (dma)\n",
|
||||
priv_ep->dequeue, trb,
|
||||
(unsigned long long)cdns3_trb_virt_to_dma(priv_ep, trb));
|
||||
|
||||
trb = &priv_ep->trb_pool[priv_ep->enqueue];
|
||||
ret += sprintf(str + ret,
|
||||
"\t\tRing enq index: %d, trb: %p (virt), 0x%llx (dma)\n",
|
||||
priv_ep->enqueue, trb,
|
||||
(unsigned long long)cdns3_trb_virt_to_dma(priv_ep, trb));
|
||||
|
||||
ret += sprintf(str + ret,
|
||||
"\t\tfree trbs: %d, CCS=%d, PCS=%d\n",
|
||||
priv_ep->free_trbs, priv_ep->ccs, priv_ep->pcs);
|
||||
|
||||
if (trb_per_sector > TRBS_PER_SEGMENT)
|
||||
trb_per_sector = TRBS_PER_SEGMENT;
|
||||
|
||||
if (trb_per_sector > TRBS_PER_SEGMENT) {
|
||||
sprintf(str + ret, "\t\tTo big transfer ring %d\n",
|
||||
trb_per_sector);
|
||||
return str;
|
||||
}
|
||||
|
||||
for (i = 0; i < trb_per_sector; ++i) {
|
||||
trb = &ring[i];
|
||||
ret += sprintf(str + ret,
|
||||
"\t\t@%pad %08x %08x %08x\n", &addr,
|
||||
le32_to_cpu(trb->buffer),
|
||||
le32_to_cpu(trb->length),
|
||||
le32_to_cpu(trb->control));
|
||||
addr += sizeof(*trb);
|
||||
}
|
||||
|
||||
return str;
|
||||
}
|
||||
|
||||
void cdns3_dbg(struct cdns3_device *priv_dev, const char *fmt, ...);
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
void cdns3_debugfs_init(struct cdns3 *cdns);
|
||||
void cdns3_debugfs_exit(struct cdns3 *cdns);
|
||||
#else
|
||||
void cdns3_debugfs_init(struct cdns3 *cdns);
|
||||
{ }
|
||||
void cdns3_debugfs_exit(struct cdns3 *cdns);
|
||||
{ }
|
||||
#endif
|
||||
|
||||
#endif /*__LINUX_CDNS3_DEBUG*/
|
||||
|
|
@ -0,0 +1,153 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Cadence USBSS DRD Controller DebugFS filer.
|
||||
*
|
||||
* Copyright (C) 2018-2019 Cadence.
|
||||
*
|
||||
* Author: Pawel Laszczak <pawell@cadence.com>
|
||||
*/
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/debugfs.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <linux/uaccess.h>
|
||||
|
||||
#include "core.h"
|
||||
#include "gadget.h"
|
||||
#include "drd.h"
|
||||
|
||||
static const char *const cdns3_mode[] = {
|
||||
[USB_DR_MODE_UNKNOWN] = "unknown",
|
||||
[USB_DR_MODE_OTG] = "otg",
|
||||
[USB_DR_MODE_HOST] = "host",
|
||||
[USB_DR_MODE_PERIPHERAL] = "device",
|
||||
};
|
||||
|
||||
static int cdns3_mode_show(struct seq_file *s, void *unused)
|
||||
{
|
||||
struct cdns3 *cdns = s->private;
|
||||
|
||||
seq_puts(s, cdns3_mode[cdns->current_dr_mode]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cdns3_mode_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, cdns3_mode_show, inode->i_private);
|
||||
}
|
||||
|
||||
static ssize_t cdns3_mode_write(struct file *file,
|
||||
const char __user *ubuf,
|
||||
size_t count, loff_t *ppos)
|
||||
{
|
||||
struct seq_file *s = file->private_data;
|
||||
struct cdns3 *cdns = s->private;
|
||||
char buf[32];
|
||||
int ret;
|
||||
|
||||
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
|
||||
return -EFAULT;
|
||||
|
||||
if (cdns->debug_disable) {
|
||||
dev_err(cdns->dev,
|
||||
"Mode can't be changed when disable is set\n");
|
||||
return -EPERM;
|
||||
}
|
||||
|
||||
ret = match_string(cdns3_mode, ARRAY_SIZE(cdns3_mode), buf);
|
||||
if (ret < 0 || ret == USB_DR_MODE_UNKNOWN) {
|
||||
dev_err(cdns->dev, "Failed: incorrect mode setting\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (cdns->current_dr_mode != ret) {
|
||||
cdns->desired_dr_mode = ret;
|
||||
cdns3_role_stop(cdns);
|
||||
ret = cdns3_drd_update_mode(cdns);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
queue_work(system_freezable_wq, &cdns->role_switch_wq);
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static const struct file_operations cdns3_mode_fops = {
|
||||
.open = cdns3_mode_open,
|
||||
.write = cdns3_mode_write,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
static int cdns3_disable_show(struct seq_file *s, void *unused)
|
||||
{
|
||||
struct cdns3 *cdns = s->private;
|
||||
|
||||
if (!cdns->debug_disable)
|
||||
seq_puts(s, "0\n");
|
||||
else
|
||||
seq_puts(s, "1\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t cdns3_disable_write(struct file *file,
|
||||
const char __user *ubuf,
|
||||
size_t count, loff_t *ppos)
|
||||
{
|
||||
struct seq_file *s = file->private_data;
|
||||
struct cdns3 *cdns = s->private;
|
||||
bool disable;
|
||||
char buf[16];
|
||||
|
||||
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
|
||||
return -EFAULT;
|
||||
|
||||
if (kstrtobool(buf, &disable)) {
|
||||
dev_err(cdns->dev, "wrong setting\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (disable != cdns->debug_disable) {
|
||||
cdns->debug_disable = disable;
|
||||
queue_work(system_freezable_wq, &cdns->role_switch_wq);
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static int cdns3_disable_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, cdns3_disable_show, inode->i_private);
|
||||
}
|
||||
|
||||
static const struct file_operations cdns3_disable_fops = {
|
||||
.open = cdns3_disable_open,
|
||||
.write = cdns3_disable_write,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
void cdns3_debugfs_init(struct cdns3 *cdns)
|
||||
{
|
||||
struct dentry *root;
|
||||
|
||||
root = debugfs_create_dir(dev_name(cdns->dev), NULL);
|
||||
cdns->root = root;
|
||||
if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET) &&
|
||||
IS_ENABLED(CONFIG_USB_CDNS3_HOST))
|
||||
debugfs_create_file("mode", 0644, root, cdns,
|
||||
&cdns3_mode_fops);
|
||||
|
||||
debugfs_create_file("disable", 0644, root, cdns,
|
||||
&cdns3_disable_fops);
|
||||
}
|
||||
|
||||
void cdns3_debugfs_exit(struct cdns3 *cdns)
|
||||
{
|
||||
debugfs_remove_recursive(cdns->root);
|
||||
}
|
||||
|
|
@ -0,0 +1,379 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Cadence USBSS DRD Driver.
|
||||
*
|
||||
* Copyright (C) 2018-2019 Cadence.
|
||||
* Copyright (C) 2019 Texas Instruments
|
||||
*
|
||||
* Author: Pawel Laszczak <pawell@cadence.com>
|
||||
* Roger Quadros <rogerq@ti.com>
|
||||
*
|
||||
*
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/usb/otg.h>
|
||||
|
||||
#include "gadget.h"
|
||||
#include "drd.h"
|
||||
#include "core.h"
|
||||
|
||||
/**
|
||||
* cdns3_set_mode - change mode of OTG Core
|
||||
* @cdns: pointer to context structure
|
||||
* @mode: selected mode from cdns_role
|
||||
*
|
||||
* Returns 0 on success otherwise negative errno
|
||||
*/
|
||||
int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
|
||||
{
|
||||
int ret = 0;
|
||||
u32 reg;
|
||||
|
||||
cdns->current_dr_mode = mode;
|
||||
|
||||
switch (mode) {
|
||||
case USB_DR_MODE_PERIPHERAL:
|
||||
break;
|
||||
case USB_DR_MODE_HOST:
|
||||
break;
|
||||
case USB_DR_MODE_OTG:
|
||||
dev_dbg(cdns->dev, "Set controller to OTG mode\n");
|
||||
if (cdns->version == CDNS3_CONTROLLER_V1) {
|
||||
reg = readl(&cdns->otg_v1_regs->override);
|
||||
reg |= OVERRIDE_IDPULLUP;
|
||||
writel(reg, &cdns->otg_v1_regs->override);
|
||||
} else {
|
||||
reg = readl(&cdns->otg_v0_regs->ctrl1);
|
||||
reg |= OVERRIDE_IDPULLUP_V0;
|
||||
writel(reg, &cdns->otg_v0_regs->ctrl1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Hardware specification says: "ID_VALUE must be valid within
|
||||
* 50ms after idpullup is set to '1" so driver must wait
|
||||
* 50ms before reading this pin.
|
||||
*/
|
||||
usleep_range(50000, 60000);
|
||||
break;
|
||||
default:
|
||||
cdns->current_dr_mode = USB_DR_MODE_UNKNOWN;
|
||||
dev_err(cdns->dev, "Unsupported mode of operation %d\n", mode);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int cdns3_get_id(struct cdns3 *cdns)
|
||||
{
|
||||
int id;
|
||||
|
||||
id = readl(&cdns->otg_regs->sts) & OTGSTS_ID_VALUE;
|
||||
dev_dbg(cdns->dev, "OTG ID: %d", id);
|
||||
|
||||
return id;
|
||||
}
|
||||
|
||||
int cdns3_get_vbus(struct cdns3 *cdns)
|
||||
{
|
||||
int vbus;
|
||||
|
||||
vbus = !!(readl(&cdns->otg_regs->sts) & OTGSTS_VBUS_VALID);
|
||||
dev_dbg(cdns->dev, "OTG VBUS: %d", vbus);
|
||||
return vbus;
|
||||
}
|
||||
|
||||
int cdns3_is_host(struct cdns3 *cdns)
|
||||
{
|
||||
if (cdns->current_dr_mode == USB_DR_MODE_HOST)
|
||||
return 1;
|
||||
else if (!cdns3_get_id(cdns))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int cdns3_is_device(struct cdns3 *cdns)
|
||||
{
|
||||
if (cdns->current_dr_mode == USB_DR_MODE_PERIPHERAL)
|
||||
return 1;
|
||||
else if (cdns->current_dr_mode == USB_DR_MODE_OTG)
|
||||
if (cdns3_get_id(cdns))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_otg_disable_irq - Disable all OTG interrupts
|
||||
* @cdns: Pointer to controller context structure
|
||||
*/
|
||||
static void cdns3_otg_disable_irq(struct cdns3 *cdns)
|
||||
{
|
||||
writel(0, &cdns->otg_regs->ien);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_otg_enable_irq - enable id and sess_valid interrupts
|
||||
* @cdns: Pointer to controller context structure
|
||||
*/
|
||||
static void cdns3_otg_enable_irq(struct cdns3 *cdns)
|
||||
{
|
||||
writel(OTGIEN_ID_CHANGE_INT | OTGIEN_VBUSVALID_RISE_INT |
|
||||
OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_regs->ien);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_drd_switch_host - start/stop host
|
||||
* @cdns: Pointer to controller context structure
|
||||
* @on: 1 for start, 0 for stop
|
||||
*
|
||||
* Returns 0 on success otherwise negative errno
|
||||
*/
|
||||
int cdns3_drd_switch_host(struct cdns3 *cdns, int on)
|
||||
{
|
||||
int ret;
|
||||
u32 reg = OTGCMD_OTG_DIS;
|
||||
|
||||
/* switch OTG core */
|
||||
if (on) {
|
||||
writel(OTGCMD_HOST_BUS_REQ | reg, &cdns->otg_regs->cmd);
|
||||
|
||||
dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");
|
||||
ret = cdns3_handshake(&cdns->otg_regs->sts, OTGSTS_XHCI_READY,
|
||||
OTGSTS_XHCI_READY, 100000);
|
||||
|
||||
if (ret) {
|
||||
dev_err(cdns->dev, "timeout waiting for xhci_ready\n");
|
||||
return ret;
|
||||
}
|
||||
} else {
|
||||
writel(OTGCMD_HOST_BUS_DROP | OTGCMD_DEV_BUS_DROP |
|
||||
OTGCMD_DEV_POWER_OFF | OTGCMD_HOST_POWER_OFF,
|
||||
&cdns->otg_regs->cmd);
|
||||
/* Waiting till H_IDLE state.*/
|
||||
cdns3_handshake(&cdns->otg_regs->state,
|
||||
OTGSTATE_HOST_STATE_MASK,
|
||||
0, 2000000);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_drd_switch_gadget - start/stop gadget
|
||||
* @cdns: Pointer to controller context structure
|
||||
* @on: 1 for start, 0 for stop
|
||||
*
|
||||
* Returns 0 on success otherwise negative errno
|
||||
*/
|
||||
int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on)
|
||||
{
|
||||
int ret;
|
||||
u32 reg = OTGCMD_OTG_DIS;
|
||||
|
||||
/* switch OTG core */
|
||||
if (on) {
|
||||
writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd);
|
||||
|
||||
dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n");
|
||||
|
||||
ret = cdns3_handshake(&cdns->otg_regs->sts, OTGSTS_DEV_READY,
|
||||
OTGSTS_DEV_READY, 100000);
|
||||
|
||||
if (ret) {
|
||||
dev_err(cdns->dev, "timeout waiting for dev_ready\n");
|
||||
return ret;
|
||||
}
|
||||
} else {
|
||||
/*
|
||||
* driver should wait at least 10us after disabling Device
|
||||
* before turning-off Device (DEV_BUS_DROP)
|
||||
*/
|
||||
usleep_range(20, 30);
|
||||
writel(OTGCMD_HOST_BUS_DROP | OTGCMD_DEV_BUS_DROP |
|
||||
OTGCMD_DEV_POWER_OFF | OTGCMD_HOST_POWER_OFF,
|
||||
&cdns->otg_regs->cmd);
|
||||
/* Waiting till DEV_IDLE state.*/
|
||||
cdns3_handshake(&cdns->otg_regs->state, OTGSTATE_DEV_STATE_MASK,
|
||||
0, 2000000);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_init_otg_mode - initialize drd controller
|
||||
* @cdns: Pointer to controller context structure
|
||||
*
|
||||
* Returns 0 on success otherwise negative errno
|
||||
*/
|
||||
static int cdns3_init_otg_mode(struct cdns3 *cdns)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
cdns3_otg_disable_irq(cdns);
|
||||
/* clear all interrupts */
|
||||
writel(~0, &cdns->otg_regs->ivect);
|
||||
|
||||
ret = cdns3_set_mode(cdns, USB_DR_MODE_OTG);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
cdns3_otg_enable_irq(cdns);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_drd_update_mode - initialize mode of operation
|
||||
* @cdns: Pointer to controller context structure
|
||||
*
|
||||
* Returns 0 on success otherwise negative errno
|
||||
*/
|
||||
int cdns3_drd_update_mode(struct cdns3 *cdns)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (cdns->desired_dr_mode == cdns->current_dr_mode)
|
||||
return ret;
|
||||
|
||||
switch (cdns->desired_dr_mode) {
|
||||
case USB_DR_MODE_PERIPHERAL:
|
||||
ret = cdns3_set_mode(cdns, USB_DR_MODE_PERIPHERAL);
|
||||
break;
|
||||
case USB_DR_MODE_HOST:
|
||||
ret = cdns3_set_mode(cdns, USB_DR_MODE_HOST);
|
||||
break;
|
||||
case USB_DR_MODE_OTG:
|
||||
ret = cdns3_init_otg_mode(cdns);
|
||||
break;
|
||||
default:
|
||||
dev_err(cdns->dev, "Unsupported mode of operation %d\n",
|
||||
cdns->dr_mode);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_drd_irq - interrupt handler for OTG events
|
||||
*
|
||||
* @irq: irq number for cdns3 core device
|
||||
* @data: structure of cdns3
|
||||
*
|
||||
* Returns IRQ_HANDLED or IRQ_NONE
|
||||
*/
|
||||
static irqreturn_t cdns3_drd_irq(int irq, void *data)
|
||||
{
|
||||
irqreturn_t ret = IRQ_NONE;
|
||||
struct cdns3 *cdns = data;
|
||||
u32 reg;
|
||||
|
||||
if (cdns->dr_mode != USB_DR_MODE_OTG)
|
||||
return ret;
|
||||
|
||||
reg = readl(&cdns->otg_regs->ivect);
|
||||
|
||||
if (!reg)
|
||||
return ret;
|
||||
|
||||
if (reg & OTGIEN_ID_CHANGE_INT) {
|
||||
dev_dbg(cdns->dev, "OTG IRQ: new ID: %d\n",
|
||||
cdns3_get_id(cdns));
|
||||
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
if (reg & (OTGIEN_VBUSVALID_RISE_INT | OTGIEN_VBUSVALID_FALL_INT)) {
|
||||
dev_dbg(cdns->dev, "OTG IRQ: new VBUS: %d\n",
|
||||
cdns3_get_vbus(cdns));
|
||||
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
if (ret == IRQ_HANDLED)
|
||||
queue_work(system_freezable_wq, &cdns->role_switch_wq);
|
||||
|
||||
writel(~0, &cdns->otg_regs->ivect);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int cdns3_drd_init(struct cdns3 *cdns)
|
||||
{
|
||||
void __iomem *regs;
|
||||
int ret = 0;
|
||||
u32 state;
|
||||
|
||||
regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);
|
||||
if (IS_ERR(regs))
|
||||
return PTR_ERR(regs);
|
||||
|
||||
/* Detection of DRD version. Controller has been released
|
||||
* in two versions. Both are similar, but they have same changes
|
||||
* in register maps.
|
||||
* The first register in old version is command register and it's read
|
||||
* only, so driver should read 0 from it. On the other hand, in v1
|
||||
* the first register contains device ID number which is not set to 0.
|
||||
* Driver uses this fact to detect the proper version of
|
||||
* controller.
|
||||
*/
|
||||
cdns->otg_v0_regs = regs;
|
||||
if (!readl(&cdns->otg_v0_regs->cmd)) {
|
||||
cdns->version = CDNS3_CONTROLLER_V0;
|
||||
cdns->otg_v1_regs = NULL;
|
||||
cdns->otg_regs = regs;
|
||||
writel(1, &cdns->otg_v0_regs->simulate);
|
||||
dev_info(cdns->dev, "DRD version v0 (%08x)\n",
|
||||
readl(&cdns->otg_v0_regs->version));
|
||||
} else {
|
||||
cdns->otg_v0_regs = NULL;
|
||||
cdns->otg_v1_regs = regs;
|
||||
cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd;
|
||||
cdns->version = CDNS3_CONTROLLER_V1;
|
||||
writel(1, &cdns->otg_v1_regs->simulate);
|
||||
dev_info(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n",
|
||||
readl(&cdns->otg_v1_regs->did),
|
||||
readl(&cdns->otg_v1_regs->rid));
|
||||
}
|
||||
|
||||
state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts));
|
||||
|
||||
/* Update dr_mode according to STRAP configuration. */
|
||||
cdns->dr_mode = USB_DR_MODE_OTG;
|
||||
if (state == OTGSTS_STRAP_HOST) {
|
||||
dev_dbg(cdns->dev, "Controller strapped to HOST\n");
|
||||
cdns->dr_mode = USB_DR_MODE_HOST;
|
||||
} else if (state == OTGSTS_STRAP_GADGET) {
|
||||
dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n");
|
||||
cdns->dr_mode = USB_DR_MODE_PERIPHERAL;
|
||||
}
|
||||
|
||||
cdns->desired_dr_mode = cdns->dr_mode;
|
||||
cdns->current_dr_mode = USB_DR_MODE_UNKNOWN;
|
||||
|
||||
ret = devm_request_threaded_irq(cdns->dev, cdns->otg_irq,
|
||||
cdns3_drd_irq,
|
||||
NULL, IRQF_SHARED,
|
||||
dev_name(cdns->dev), cdns);
|
||||
|
||||
if (ret) {
|
||||
dev_err(cdns->dev, "couldn't get otg_irq\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
state = readl(&cdns->otg_regs->sts);
|
||||
if (OTGSTS_OTG_NRDY(state) != 0) {
|
||||
dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int cdns3_drd_exit(struct cdns3 *cdns)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,166 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Cadence USB3 DRD header file.
|
||||
*
|
||||
* Copyright (C) 2018-2019 Cadence.
|
||||
*
|
||||
* Author: Pawel Laszczak <pawell@cadence.com>
|
||||
*/
|
||||
#ifndef __LINUX_CDNS3_DRD
|
||||
#define __LINUX_CDNS3_DRD
|
||||
|
||||
#include <linux/usb/otg.h>
|
||||
#include <linux/phy/phy.h>
|
||||
#include "core.h"
|
||||
|
||||
/* DRD register interface for version v1. */
|
||||
struct cdns3_otg_regs {
|
||||
__le32 did;
|
||||
__le32 rid;
|
||||
__le32 capabilities;
|
||||
__le32 reserved1;
|
||||
__le32 cmd;
|
||||
__le32 sts;
|
||||
__le32 state;
|
||||
__le32 reserved2;
|
||||
__le32 ien;
|
||||
__le32 ivect;
|
||||
__le32 refclk;
|
||||
__le32 tmr;
|
||||
__le32 reserved3[4];
|
||||
__le32 simulate;
|
||||
__le32 override;
|
||||
__le32 susp_ctrl;
|
||||
__le32 reserved4;
|
||||
__le32 anasts;
|
||||
__le32 adp_ramp_time;
|
||||
__le32 ctrl1;
|
||||
__le32 ctrl2;
|
||||
};
|
||||
|
||||
/* DRD register interface for version v0. */
|
||||
struct cdns3_otg_legacy_regs {
|
||||
__le32 cmd;
|
||||
__le32 sts;
|
||||
__le32 state;
|
||||
__le32 refclk;
|
||||
__le32 ien;
|
||||
__le32 ivect;
|
||||
__le32 reserved1[3];
|
||||
__le32 tmr;
|
||||
__le32 reserved2[2];
|
||||
__le32 version;
|
||||
__le32 capabilities;
|
||||
__le32 reserved3[2];
|
||||
__le32 simulate;
|
||||
__le32 reserved4[5];
|
||||
__le32 ctrl1;
|
||||
};
|
||||
|
||||
/*
|
||||
* Common registers interface for both version of DRD.
|
||||
*/
|
||||
struct cdns3_otg_common_regs {
|
||||
__le32 cmd;
|
||||
__le32 sts;
|
||||
__le32 state;
|
||||
__le32 different1;
|
||||
__le32 ien;
|
||||
__le32 ivect;
|
||||
};
|
||||
|
||||
/* CDNS_RID - bitmasks */
|
||||
#define CDNS_RID(p) ((p) & GENMASK(15, 0))
|
||||
|
||||
/* CDNS_VID - bitmasks */
|
||||
#define CDNS_DID(p) ((p) & GENMASK(31, 0))
|
||||
|
||||
/* OTGCMD - bitmasks */
|
||||
/* "Request the bus for Device mode. */
|
||||
#define OTGCMD_DEV_BUS_REQ BIT(0)
|
||||
/* Request the bus for Host mode */
|
||||
#define OTGCMD_HOST_BUS_REQ BIT(1)
|
||||
/* Enable OTG mode. */
|
||||
#define OTGCMD_OTG_EN BIT(2)
|
||||
/* Disable OTG mode */
|
||||
#define OTGCMD_OTG_DIS BIT(3)
|
||||
/*"Configure OTG as A-Device. */
|
||||
#define OTGCMD_A_DEV_EN BIT(4)
|
||||
/*"Configure OTG as A-Device. */
|
||||
#define OTGCMD_A_DEV_DIS BIT(5)
|
||||
/* Drop the bus for Device mod e. */
|
||||
#define OTGCMD_DEV_BUS_DROP BIT(8)
|
||||
/* Drop the bus for Host mode*/
|
||||
#define OTGCMD_HOST_BUS_DROP BIT(9)
|
||||
/* Power Down USBSS-DEV. */
|
||||
#define OTGCMD_DEV_POWER_OFF BIT(11)
|
||||
/* Power Down CDNSXHCI. */
|
||||
#define OTGCMD_HOST_POWER_OFF BIT(12)
|
||||
|
||||
/* OTGIEN - bitmasks */
|
||||
/* ID change interrupt enable */
|
||||
#define OTGIEN_ID_CHANGE_INT BIT(0)
|
||||
/* Vbusvalid fall detected interrupt enable.*/
|
||||
#define OTGIEN_VBUSVALID_RISE_INT BIT(4)
|
||||
/* Vbusvalid fall detected interrupt enable */
|
||||
#define OTGIEN_VBUSVALID_FALL_INT BIT(5)
|
||||
|
||||
/* OTGSTS - bitmasks */
|
||||
/*
|
||||
* Current value of the ID pin. It is only valid when idpullup in
|
||||
* OTGCTRL1_TYPE register is set to '1'.
|
||||
*/
|
||||
#define OTGSTS_ID_VALUE BIT(0)
|
||||
/* Current value of the vbus_valid */
|
||||
#define OTGSTS_VBUS_VALID BIT(1)
|
||||
/* Current value of the b_sess_vld */
|
||||
#define OTGSTS_SESSION_VALID BIT(2)
|
||||
/*Device mode is active*/
|
||||
#define OTGSTS_DEV_ACTIVE BIT(3)
|
||||
/* Host mode is active. */
|
||||
#define OTGSTS_HOST_ACTIVE BIT(4)
|
||||
/* OTG Controller not ready. */
|
||||
#define OTGSTS_OTG_NRDY_MASK BIT(11)
|
||||
#define OTGSTS_OTG_NRDY(p) ((p) & OTGSTS_OTG_NRDY_MASK)
|
||||
/*
|
||||
* Value of the strap pins.
|
||||
* 000 - no default configuration
|
||||
* 010 - Controller initiall configured as Host
|
||||
* 100 - Controller initially configured as Device
|
||||
*/
|
||||
#define OTGSTS_STRAP(p) (((p) & GENMASK(14, 12)) >> 12)
|
||||
#define OTGSTS_STRAP_NO_DEFAULT_CFG 0x00
|
||||
#define OTGSTS_STRAP_HOST_OTG 0x01
|
||||
#define OTGSTS_STRAP_HOST 0x02
|
||||
#define OTGSTS_STRAP_GADGET 0x04
|
||||
/* Host mode is turned on. */
|
||||
#define OTGSTS_XHCI_READY BIT(26)
|
||||
/* "Device mode is turned on .*/
|
||||
#define OTGSTS_DEV_READY BIT(27)
|
||||
|
||||
/* OTGSTATE- bitmasks */
|
||||
#define OTGSTATE_DEV_STATE_MASK GENMASK(2, 0)
|
||||
#define OTGSTATE_HOST_STATE_MASK GENMASK(5, 3)
|
||||
#define OTGSTATE_HOST_STATE_IDLE 0x0
|
||||
#define OTGSTATE_HOST_STATE_VBUS_FALL 0x7
|
||||
#define OTGSTATE_HOST_STATE(p) (((p) & OTGSTATE_HOST_STATE_MASK) >> 3)
|
||||
|
||||
/* OTGREFCLK - bitmasks */
|
||||
#define OTGREFCLK_STB_CLK_SWITCH_EN BIT(31)
|
||||
|
||||
/* OVERRIDE - bitmasks */
|
||||
#define OVERRIDE_IDPULLUP BIT(0)
|
||||
/* Only for CDNS3_CONTROLLER_V0 version */
|
||||
#define OVERRIDE_IDPULLUP_V0 BIT(24)
|
||||
|
||||
int cdns3_is_host(struct cdns3 *cdns);
|
||||
int cdns3_is_device(struct cdns3 *cdns);
|
||||
int cdns3_get_id(struct cdns3 *cdns);
|
||||
int cdns3_get_vbus(struct cdns3 *cdns);
|
||||
int cdns3_drd_init(struct cdns3 *cdns);
|
||||
int cdns3_drd_exit(struct cdns3 *cdns);
|
||||
int cdns3_drd_update_mode(struct cdns3 *cdns);
|
||||
int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on);
|
||||
int cdns3_drd_switch_host(struct cdns3 *cdns, int on);
|
||||
|
||||
#endif /* __LINUX_CDNS3_DRD */
|
||||
|
|
@ -0,0 +1,920 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Cadence USBSS DRD Driver - gadget side.
|
||||
*
|
||||
* Copyright (C) 2018 Cadence Design Systems.
|
||||
* Copyright (C) 2017-2018 NXP
|
||||
*
|
||||
* Authors: Pawel Jez <pjez@cadence.com>,
|
||||
* Pawel Laszczak <pawell@cadence.com>
|
||||
* Peter Chen <peter.chen@nxp.com>
|
||||
*/
|
||||
|
||||
#include <linux/usb/composite.h>
|
||||
|
||||
#include "gadget.h"
|
||||
#include "trace.h"
|
||||
|
||||
static struct usb_endpoint_descriptor cdns3_gadget_ep0_desc = {
|
||||
.bLength = USB_DT_ENDPOINT_SIZE,
|
||||
.bDescriptorType = USB_DT_ENDPOINT,
|
||||
.bmAttributes = USB_ENDPOINT_XFER_CONTROL,
|
||||
};
|
||||
|
||||
/**
|
||||
* cdns3_ep0_run_transfer - Do transfer on default endpoint hardware
|
||||
* @priv_dev: extended gadget object
|
||||
* @dma_addr: physical address where data is/will be stored
|
||||
* @length: data length
|
||||
* @erdy: set it to 1 when ERDY packet should be sent -
|
||||
* exit from flow control state
|
||||
*/
|
||||
static void cdns3_ep0_run_transfer(struct cdns3_device *priv_dev,
|
||||
dma_addr_t dma_addr,
|
||||
unsigned int length, int erdy, int zlp)
|
||||
{
|
||||
struct cdns3_usb_regs __iomem *regs = priv_dev->regs;
|
||||
struct cdns3_endpoint *priv_ep = priv_dev->eps[0];
|
||||
|
||||
priv_ep->trb_pool[0].buffer = TRB_BUFFER(dma_addr);
|
||||
priv_ep->trb_pool[0].length = TRB_LEN(length);
|
||||
|
||||
if (zlp) {
|
||||
priv_ep->trb_pool[0].control = TRB_CYCLE | TRB_TYPE(TRB_NORMAL);
|
||||
priv_ep->trb_pool[1].buffer = TRB_BUFFER(dma_addr);
|
||||
priv_ep->trb_pool[1].length = TRB_LEN(0);
|
||||
priv_ep->trb_pool[1].control = TRB_CYCLE | TRB_IOC |
|
||||
TRB_TYPE(TRB_NORMAL);
|
||||
} else {
|
||||
priv_ep->trb_pool[0].control = TRB_CYCLE | TRB_IOC |
|
||||
TRB_TYPE(TRB_NORMAL);
|
||||
priv_ep->trb_pool[1].control = 0;
|
||||
}
|
||||
|
||||
trace_cdns3_prepare_trb(priv_ep, priv_ep->trb_pool);
|
||||
|
||||
cdns3_select_ep(priv_dev, priv_dev->ep0_data_dir);
|
||||
|
||||
writel(EP_STS_TRBERR, ®s->ep_sts);
|
||||
writel(EP_TRADDR_TRADDR(priv_ep->trb_pool_dma), ®s->ep_traddr);
|
||||
trace_cdns3_doorbell_ep0(priv_dev->ep0_data_dir ? "ep0in" : "ep0out",
|
||||
readl(®s->ep_traddr));
|
||||
|
||||
/* TRB should be prepared before starting transfer. */
|
||||
writel(EP_CMD_DRDY, ®s->ep_cmd);
|
||||
|
||||
/* Resume controller before arming transfer. */
|
||||
__cdns3_gadget_wakeup(priv_dev);
|
||||
|
||||
if (erdy)
|
||||
writel(EP_CMD_ERDY, &priv_dev->regs->ep_cmd);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_ep0_delegate_req - Returns status of handling setup packet
|
||||
* Setup is handled by gadget driver
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
*
|
||||
* Returns zero on success or negative value on failure
|
||||
*/
|
||||
static int cdns3_ep0_delegate_req(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl_req)
|
||||
{
|
||||
int ret;
|
||||
|
||||
spin_unlock(&priv_dev->lock);
|
||||
priv_dev->setup_pending = 1;
|
||||
ret = priv_dev->gadget_driver->setup(&priv_dev->gadget, ctrl_req);
|
||||
priv_dev->setup_pending = 0;
|
||||
spin_lock(&priv_dev->lock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void cdns3_prepare_setup_packet(struct cdns3_device *priv_dev)
|
||||
{
|
||||
priv_dev->ep0_data_dir = 0;
|
||||
priv_dev->ep0_stage = CDNS3_SETUP_STAGE;
|
||||
cdns3_ep0_run_transfer(priv_dev, priv_dev->setup_dma,
|
||||
sizeof(struct usb_ctrlrequest), 0, 0);
|
||||
}
|
||||
|
||||
static void cdns3_ep0_complete_setup(struct cdns3_device *priv_dev,
|
||||
u8 send_stall, u8 send_erdy)
|
||||
{
|
||||
struct cdns3_endpoint *priv_ep = priv_dev->eps[0];
|
||||
struct usb_request *request;
|
||||
|
||||
request = cdns3_next_request(&priv_ep->pending_req_list);
|
||||
if (request)
|
||||
list_del_init(&request->list);
|
||||
|
||||
if (send_stall) {
|
||||
cdns3_dbg(priv_ep->cdns3_dev, "STALL for ep0\n");
|
||||
/* set_stall on ep0 */
|
||||
cdns3_select_ep(priv_dev, 0x00);
|
||||
writel(EP_CMD_SSTALL, &priv_dev->regs->ep_cmd);
|
||||
} else {
|
||||
cdns3_prepare_setup_packet(priv_dev);
|
||||
}
|
||||
|
||||
priv_dev->ep0_stage = CDNS3_SETUP_STAGE;
|
||||
writel((send_erdy ? EP_CMD_ERDY : 0) | EP_CMD_REQ_CMPL,
|
||||
&priv_dev->regs->ep_cmd);
|
||||
|
||||
cdns3_allow_enable_l1(priv_dev, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_req_ep0_set_configuration - Handling of SET_CONFIG standard USB request
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
*
|
||||
* Returns 0 if success, USB_GADGET_DELAYED_STATUS on deferred status stage,
|
||||
* error code on error
|
||||
*/
|
||||
static int cdns3_req_ep0_set_configuration(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl_req)
|
||||
{
|
||||
enum usb_device_state device_state = priv_dev->gadget.state;
|
||||
struct cdns3_endpoint *priv_ep;
|
||||
u32 config = le16_to_cpu(ctrl_req->wValue);
|
||||
int result = 0;
|
||||
int i;
|
||||
|
||||
switch (device_state) {
|
||||
case USB_STATE_ADDRESS:
|
||||
/* Configure non-control EPs */
|
||||
for (i = 0; i < CDNS3_ENDPOINTS_MAX_COUNT; i++) {
|
||||
priv_ep = priv_dev->eps[i];
|
||||
if (!priv_ep)
|
||||
continue;
|
||||
|
||||
if (priv_ep->flags & EP_CLAIMED)
|
||||
cdns3_ep_config(priv_ep);
|
||||
}
|
||||
|
||||
result = cdns3_ep0_delegate_req(priv_dev, ctrl_req);
|
||||
|
||||
if (result)
|
||||
return result;
|
||||
|
||||
if (config) {
|
||||
cdns3_set_hw_configuration(priv_dev);
|
||||
} else {
|
||||
cdns3_hw_reset_eps_config(priv_dev);
|
||||
usb_gadget_set_state(&priv_dev->gadget,
|
||||
USB_STATE_ADDRESS);
|
||||
}
|
||||
break;
|
||||
case USB_STATE_CONFIGURED:
|
||||
result = cdns3_ep0_delegate_req(priv_dev, ctrl_req);
|
||||
|
||||
if (!config && !result) {
|
||||
cdns3_hw_reset_eps_config(priv_dev);
|
||||
usb_gadget_set_state(&priv_dev->gadget,
|
||||
USB_STATE_ADDRESS);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
result = -EINVAL;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_req_ep0_set_address - Handling of SET_ADDRESS standard USB request
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
*
|
||||
* Returns 0 if success, error code on error
|
||||
*/
|
||||
static int cdns3_req_ep0_set_address(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl_req)
|
||||
{
|
||||
enum usb_device_state device_state = priv_dev->gadget.state;
|
||||
u32 reg;
|
||||
u32 addr;
|
||||
|
||||
addr = le16_to_cpu(ctrl_req->wValue);
|
||||
|
||||
if (addr > USB_DEVICE_MAX_ADDRESS) {
|
||||
dev_err(priv_dev->dev,
|
||||
"Device address (%d) cannot be greater than %d\n",
|
||||
addr, USB_DEVICE_MAX_ADDRESS);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (device_state == USB_STATE_CONFIGURED) {
|
||||
dev_err(priv_dev->dev,
|
||||
"can't set_address from configured state\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
reg = readl(&priv_dev->regs->usb_cmd);
|
||||
|
||||
writel(reg | USB_CMD_FADDR(addr) | USB_CMD_SET_ADDR,
|
||||
&priv_dev->regs->usb_cmd);
|
||||
|
||||
usb_gadget_set_state(&priv_dev->gadget,
|
||||
(addr ? USB_STATE_ADDRESS : USB_STATE_DEFAULT));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_req_ep0_get_status - Handling of GET_STATUS standard USB request
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
*
|
||||
* Returns 0 if success, error code on error
|
||||
*/
|
||||
static int cdns3_req_ep0_get_status(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl)
|
||||
{
|
||||
__le16 *response_pkt;
|
||||
u16 usb_status = 0;
|
||||
u32 recip;
|
||||
u32 reg;
|
||||
|
||||
recip = ctrl->bRequestType & USB_RECIP_MASK;
|
||||
|
||||
switch (recip) {
|
||||
case USB_RECIP_DEVICE:
|
||||
/* self powered */
|
||||
if (priv_dev->is_selfpowered)
|
||||
usb_status = BIT(USB_DEVICE_SELF_POWERED);
|
||||
|
||||
if (priv_dev->wake_up_flag)
|
||||
usb_status |= BIT(USB_DEVICE_REMOTE_WAKEUP);
|
||||
|
||||
if (priv_dev->gadget.speed != USB_SPEED_SUPER)
|
||||
break;
|
||||
|
||||
reg = readl(&priv_dev->regs->usb_sts);
|
||||
|
||||
if (priv_dev->u1_allowed)
|
||||
usb_status |= BIT(USB_DEV_STAT_U1_ENABLED);
|
||||
|
||||
if (priv_dev->u2_allowed)
|
||||
usb_status |= BIT(USB_DEV_STAT_U2_ENABLED);
|
||||
|
||||
break;
|
||||
case USB_RECIP_INTERFACE:
|
||||
return cdns3_ep0_delegate_req(priv_dev, ctrl);
|
||||
case USB_RECIP_ENDPOINT:
|
||||
/* check if endpoint is stalled */
|
||||
cdns3_select_ep(priv_dev, ctrl->wIndex);
|
||||
if (EP_STS_STALL(readl(&priv_dev->regs->ep_sts)))
|
||||
usb_status = BIT(USB_ENDPOINT_HALT);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
response_pkt = (__le16 *)priv_dev->setup_buf;
|
||||
*response_pkt = cpu_to_le16(usb_status);
|
||||
|
||||
cdns3_ep0_run_transfer(priv_dev, priv_dev->setup_dma,
|
||||
sizeof(*response_pkt), 1, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cdns3_ep0_feature_handle_device(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl,
|
||||
int set)
|
||||
{
|
||||
enum usb_device_state state;
|
||||
enum usb_device_speed speed;
|
||||
int ret = 0;
|
||||
u32 wValue;
|
||||
u32 wIndex;
|
||||
u16 tmode;
|
||||
|
||||
wValue = le16_to_cpu(ctrl->wValue);
|
||||
wIndex = le16_to_cpu(ctrl->wIndex);
|
||||
state = priv_dev->gadget.state;
|
||||
speed = priv_dev->gadget.speed;
|
||||
|
||||
switch (ctrl->wValue) {
|
||||
case USB_DEVICE_REMOTE_WAKEUP:
|
||||
priv_dev->wake_up_flag = !!set;
|
||||
break;
|
||||
case USB_DEVICE_U1_ENABLE:
|
||||
if (state != USB_STATE_CONFIGURED || speed != USB_SPEED_SUPER)
|
||||
return -EINVAL;
|
||||
|
||||
priv_dev->u1_allowed = !!set;
|
||||
break;
|
||||
case USB_DEVICE_U2_ENABLE:
|
||||
if (state != USB_STATE_CONFIGURED || speed != USB_SPEED_SUPER)
|
||||
return -EINVAL;
|
||||
|
||||
priv_dev->u2_allowed = !!set;
|
||||
break;
|
||||
case USB_DEVICE_LTM_ENABLE:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
case USB_DEVICE_TEST_MODE:
|
||||
if (state != USB_STATE_CONFIGURED || speed > USB_SPEED_HIGH)
|
||||
return -EINVAL;
|
||||
|
||||
tmode = le16_to_cpu(ctrl->wIndex);
|
||||
|
||||
if (!set || (tmode & 0xff) != 0)
|
||||
return -EINVAL;
|
||||
|
||||
switch (tmode >> 8) {
|
||||
case TEST_J:
|
||||
case TEST_K:
|
||||
case TEST_SE0_NAK:
|
||||
case TEST_PACKET:
|
||||
cdns3_ep0_complete_setup(priv_dev, 0, 1);
|
||||
/**
|
||||
* Little delay to give the controller some time
|
||||
* for sending status stage.
|
||||
* This time should be less then 3ms.
|
||||
*/
|
||||
usleep_range(1000, 2000);
|
||||
cdns3_set_register_bit(&priv_dev->regs->usb_cmd,
|
||||
USB_CMD_STMODE |
|
||||
USB_STS_TMODE_SEL(tmode - 1));
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int cdns3_ep0_feature_handle_intf(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl,
|
||||
int set)
|
||||
{
|
||||
u32 wValue;
|
||||
int ret = 0;
|
||||
|
||||
wValue = le16_to_cpu(ctrl->wValue);
|
||||
|
||||
switch (wValue) {
|
||||
case USB_INTRF_FUNC_SUSPEND:
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int cdns3_ep0_feature_handle_endpoint(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl,
|
||||
int set)
|
||||
{
|
||||
struct cdns3_endpoint *priv_ep;
|
||||
int ret = 0;
|
||||
u8 index;
|
||||
|
||||
if (le16_to_cpu(ctrl->wValue) != USB_ENDPOINT_HALT)
|
||||
return -EINVAL;
|
||||
|
||||
if (!(ctrl->wIndex & ~USB_DIR_IN))
|
||||
return 0;
|
||||
|
||||
index = cdns3_ep_addr_to_index(ctrl->wIndex);
|
||||
priv_ep = priv_dev->eps[index];
|
||||
|
||||
cdns3_select_ep(priv_dev, ctrl->wIndex);
|
||||
|
||||
if (set) {
|
||||
cdns3_dbg(priv_ep->cdns3_dev, "Stall endpoint %s\n",
|
||||
priv_ep->name);
|
||||
writel(EP_CMD_SSTALL, &priv_dev->regs->ep_cmd);
|
||||
priv_ep->flags |= EP_STALL;
|
||||
} else {
|
||||
struct usb_request *request;
|
||||
|
||||
if (priv_dev->eps[index]->flags & EP_WEDGE) {
|
||||
cdns3_select_ep(priv_dev, 0x00);
|
||||
return 0;
|
||||
}
|
||||
|
||||
cdns3_dbg(priv_ep->cdns3_dev, "Clear Stalled endpoint %s\n",
|
||||
priv_ep->name);
|
||||
|
||||
writel(EP_CMD_CSTALL | EP_CMD_EPRST, &priv_dev->regs->ep_cmd);
|
||||
|
||||
/* wait for EPRST cleared */
|
||||
ret = cdns3_handshake(&priv_dev->regs->ep_cmd,
|
||||
EP_CMD_EPRST, 0, 100);
|
||||
if (ret)
|
||||
return -EINVAL;
|
||||
|
||||
priv_ep->flags &= ~EP_STALL;
|
||||
|
||||
request = cdns3_next_request(&priv_ep->pending_req_list);
|
||||
if (request) {
|
||||
cdns3_dbg(priv_ep->cdns3_dev, "Resume transfer for %s\n",
|
||||
priv_ep->name);
|
||||
|
||||
cdns3_rearm_transfer(priv_ep, 1);
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_req_ep0_handle_feature -
|
||||
* Handling of GET/SET_FEATURE standard USB request
|
||||
*
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
* @set: must be set to 1 for SET_FEATURE request
|
||||
*
|
||||
* Returns 0 if success, error code on error
|
||||
*/
|
||||
static int cdns3_req_ep0_handle_feature(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl,
|
||||
int set)
|
||||
{
|
||||
int ret = 0;
|
||||
u32 recip;
|
||||
|
||||
recip = ctrl->bRequestType & USB_RECIP_MASK;
|
||||
|
||||
switch (recip) {
|
||||
case USB_RECIP_DEVICE:
|
||||
ret = cdns3_ep0_feature_handle_device(priv_dev, ctrl, set);
|
||||
break;
|
||||
case USB_RECIP_INTERFACE:
|
||||
ret = cdns3_ep0_feature_handle_intf(priv_dev, ctrl, set);
|
||||
break;
|
||||
case USB_RECIP_ENDPOINT:
|
||||
ret = cdns3_ep0_feature_handle_endpoint(priv_dev, ctrl, set);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_req_ep0_set_sel - Handling of SET_SEL standard USB request
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
*
|
||||
* Returns 0 if success, error code on error
|
||||
*/
|
||||
static int cdns3_req_ep0_set_sel(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl_req)
|
||||
{
|
||||
if (priv_dev->gadget.state < USB_STATE_ADDRESS)
|
||||
return -EINVAL;
|
||||
|
||||
if (ctrl_req->wLength != 6) {
|
||||
dev_err(priv_dev->dev, "Set SEL should be 6 bytes, got %d\n",
|
||||
ctrl_req->wLength);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
cdns3_ep0_run_transfer(priv_dev, priv_dev->setup_dma, 6, 1, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_req_ep0_set_isoch_delay -
|
||||
* Handling of GET_ISOCH_DELAY standard USB request
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
*
|
||||
* Returns 0 if success, error code on error
|
||||
*/
|
||||
static int cdns3_req_ep0_set_isoch_delay(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl_req)
|
||||
{
|
||||
if (ctrl_req->wIndex || ctrl_req->wLength)
|
||||
return -EINVAL;
|
||||
|
||||
priv_dev->isoch_delay = ctrl_req->wValue;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_ep0_standard_request - Handling standard USB requests
|
||||
* @priv_dev: extended gadget object
|
||||
* @ctrl_req: pointer to received setup packet
|
||||
*
|
||||
* Returns 0 if success, error code on error
|
||||
*/
|
||||
static int cdns3_ep0_standard_request(struct cdns3_device *priv_dev,
|
||||
struct usb_ctrlrequest *ctrl_req)
|
||||
{
|
||||
int ret;
|
||||
|
||||
switch (ctrl_req->bRequest) {
|
||||
case USB_REQ_SET_ADDRESS:
|
||||
ret = cdns3_req_ep0_set_address(priv_dev, ctrl_req);
|
||||
break;
|
||||
case USB_REQ_SET_CONFIGURATION:
|
||||
ret = cdns3_req_ep0_set_configuration(priv_dev, ctrl_req);
|
||||
break;
|
||||
case USB_REQ_GET_STATUS:
|
||||
ret = cdns3_req_ep0_get_status(priv_dev, ctrl_req);
|
||||
break;
|
||||
case USB_REQ_CLEAR_FEATURE:
|
||||
ret = cdns3_req_ep0_handle_feature(priv_dev, ctrl_req, 0);
|
||||
break;
|
||||
case USB_REQ_SET_FEATURE:
|
||||
ret = cdns3_req_ep0_handle_feature(priv_dev, ctrl_req, 1);
|
||||
break;
|
||||
case USB_REQ_SET_SEL:
|
||||
ret = cdns3_req_ep0_set_sel(priv_dev, ctrl_req);
|
||||
break;
|
||||
case USB_REQ_SET_ISOCH_DELAY:
|
||||
ret = cdns3_req_ep0_set_isoch_delay(priv_dev, ctrl_req);
|
||||
break;
|
||||
default:
|
||||
ret = cdns3_ep0_delegate_req(priv_dev, ctrl_req);
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __pending_setup_status_handler(struct cdns3_device *priv_dev)
|
||||
{
|
||||
struct usb_request *request = priv_dev->pending_status_request;
|
||||
|
||||
if (priv_dev->status_completion_no_call && request &&
|
||||
request->complete) {
|
||||
request->complete(&priv_dev->eps[0]->endpoint, request);
|
||||
priv_dev->status_completion_no_call = 0;
|
||||
}
|
||||
}
|
||||
|
||||
void cdns3_pending_setup_status_handler(struct work_struct *work)
|
||||
{
|
||||
struct cdns3_device *priv_dev = container_of(work, struct cdns3_device,
|
||||
pending_status_wq);
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&priv_dev->lock, flags);
|
||||
__pending_setup_status_handler(priv_dev);
|
||||
spin_unlock_irqrestore(&priv_dev->lock, flags);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_ep0_setup_phase - Handling setup USB requests
|
||||
* @priv_dev: extended gadget object
|
||||
*/
|
||||
static void cdns3_ep0_setup_phase(struct cdns3_device *priv_dev)
|
||||
{
|
||||
struct usb_ctrlrequest *ctrl = priv_dev->setup_buf;
|
||||
struct cdns3_endpoint *priv_ep = priv_dev->eps[0];
|
||||
int result;
|
||||
|
||||
priv_dev->ep0_data_dir = ctrl->bRequestType & USB_DIR_IN;
|
||||
|
||||
trace_cdns3_ctrl_req(ctrl);
|
||||
|
||||
if (!list_empty(&priv_ep->pending_req_list)) {
|
||||
struct usb_request *request;
|
||||
|
||||
request = cdns3_next_request(&priv_ep->pending_req_list);
|
||||
priv_ep->dir = priv_dev->ep0_data_dir;
|
||||
cdns3_gadget_giveback(priv_ep, to_cdns3_request(request),
|
||||
-ECONNRESET);
|
||||
}
|
||||
|
||||
if (le16_to_cpu(ctrl->wLength))
|
||||
priv_dev->ep0_stage = CDNS3_DATA_STAGE;
|
||||
else
|
||||
priv_dev->ep0_stage = CDNS3_STATUS_STAGE;
|
||||
|
||||
if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD)
|
||||
result = cdns3_ep0_standard_request(priv_dev, ctrl);
|
||||
else
|
||||
result = cdns3_ep0_delegate_req(priv_dev, ctrl);
|
||||
|
||||
if (result == USB_GADGET_DELAYED_STATUS)
|
||||
return;
|
||||
|
||||
if (result < 0)
|
||||
cdns3_ep0_complete_setup(priv_dev, 1, 1);
|
||||
else if (priv_dev->ep0_stage == CDNS3_STATUS_STAGE)
|
||||
cdns3_ep0_complete_setup(priv_dev, 0, 1);
|
||||
}
|
||||
|
||||
static void cdns3_transfer_completed(struct cdns3_device *priv_dev)
|
||||
{
|
||||
struct cdns3_endpoint *priv_ep = priv_dev->eps[0];
|
||||
|
||||
if (!list_empty(&priv_ep->pending_req_list)) {
|
||||
struct usb_request *request;
|
||||
|
||||
trace_cdns3_complete_trb(priv_ep, priv_ep->trb_pool);
|
||||
request = cdns3_next_request(&priv_ep->pending_req_list);
|
||||
|
||||
request->actual =
|
||||
TRB_LEN(le32_to_cpu(priv_ep->trb_pool->length));
|
||||
|
||||
priv_ep->dir = priv_dev->ep0_data_dir;
|
||||
cdns3_gadget_giveback(priv_ep, to_cdns3_request(request), 0);
|
||||
}
|
||||
|
||||
cdns3_ep0_complete_setup(priv_dev, 0, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_check_new_setup - Check if controller receive new SETUP packet.
|
||||
* @priv_dev: extended gadget object
|
||||
*
|
||||
* The SETUP packet can be kept in on-chip memory or in system memory.
|
||||
*/
|
||||
static bool cdns3_check_new_setup(struct cdns3_device *priv_dev)
|
||||
{
|
||||
u32 ep_sts_reg;
|
||||
|
||||
cdns3_select_ep(priv_dev, 0 | USB_DIR_OUT);
|
||||
ep_sts_reg = readl(&priv_dev->regs->ep_sts);
|
||||
|
||||
return !!(ep_sts_reg & (EP_STS_SETUP | EP_STS_STPWAIT));
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_check_ep0_interrupt_proceed - Processes interrupt related to endpoint 0
|
||||
* @priv_dev: extended gadget object
|
||||
* @dir: USB_DIR_IN for IN direction, USB_DIR_OUT for OUT direction
|
||||
*/
|
||||
void cdns3_check_ep0_interrupt_proceed(struct cdns3_device *priv_dev, int dir)
|
||||
{
|
||||
u32 ep_sts_reg;
|
||||
|
||||
cdns3_select_ep(priv_dev, dir);
|
||||
|
||||
ep_sts_reg = readl(&priv_dev->regs->ep_sts);
|
||||
writel(ep_sts_reg, &priv_dev->regs->ep_sts);
|
||||
|
||||
trace_cdns3_ep0_irq(priv_dev, ep_sts_reg);
|
||||
|
||||
__pending_setup_status_handler(priv_dev);
|
||||
|
||||
if (ep_sts_reg & EP_STS_SETUP)
|
||||
priv_dev->wait_for_setup = 1;
|
||||
|
||||
if (priv_dev->wait_for_setup && ep_sts_reg & EP_STS_IOC) {
|
||||
priv_dev->wait_for_setup = 0;
|
||||
cdns3_allow_enable_l1(priv_dev, 0);
|
||||
cdns3_ep0_setup_phase(priv_dev);
|
||||
} else if ((ep_sts_reg & EP_STS_IOC) || (ep_sts_reg & EP_STS_ISP)) {
|
||||
priv_dev->ep0_data_dir = dir;
|
||||
cdns3_transfer_completed(priv_dev);
|
||||
}
|
||||
|
||||
if (ep_sts_reg & EP_STS_DESCMIS) {
|
||||
if (dir == 0 && !priv_dev->setup_pending)
|
||||
cdns3_prepare_setup_packet(priv_dev);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_gadget_ep0_enable
|
||||
* Function shouldn't be called by gadget driver,
|
||||
* endpoint 0 is allways active
|
||||
*/
|
||||
static int cdns3_gadget_ep0_enable(struct usb_ep *ep,
|
||||
const struct usb_endpoint_descriptor *desc)
|
||||
{
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_gadget_ep0_disable
|
||||
* Function shouldn't be called by gadget driver,
|
||||
* endpoint 0 is allways active
|
||||
*/
|
||||
static int cdns3_gadget_ep0_disable(struct usb_ep *ep)
|
||||
{
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_gadget_ep0_set_halt
|
||||
* @ep: pointer to endpoint zero object
|
||||
* @value: 1 for set stall, 0 for clear stall
|
||||
*
|
||||
* Returns 0
|
||||
*/
|
||||
static int cdns3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
|
||||
{
|
||||
/* TODO */
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_gadget_ep0_queue Transfer data on endpoint zero
|
||||
* @ep: pointer to endpoint zero object
|
||||
* @request: pointer to request object
|
||||
* @gfp_flags: gfp flags
|
||||
*
|
||||
* Returns 0 on success, error code elsewhere
|
||||
*/
|
||||
static int cdns3_gadget_ep0_queue(struct usb_ep *ep,
|
||||
struct usb_request *request,
|
||||
gfp_t gfp_flags)
|
||||
{
|
||||
struct cdns3_endpoint *priv_ep = ep_to_cdns3_ep(ep);
|
||||
struct cdns3_device *priv_dev = priv_ep->cdns3_dev;
|
||||
unsigned long flags;
|
||||
int erdy_sent = 0;
|
||||
int ret = 0;
|
||||
u8 zlp = 0;
|
||||
|
||||
cdns3_dbg(priv_ep->cdns3_dev, "Queue to Ep0%s L: %d\n",
|
||||
priv_dev->ep0_data_dir ? "IN" : "OUT",
|
||||
request->length);
|
||||
|
||||
/* cancel the request if controller receive new SETUP packet. */
|
||||
if (cdns3_check_new_setup(priv_dev))
|
||||
return -ECONNRESET;
|
||||
|
||||
/* send STATUS stage. Should be called only for SET_CONFIGURATION */
|
||||
if (priv_dev->ep0_stage == CDNS3_STATUS_STAGE) {
|
||||
spin_lock_irqsave(&priv_dev->lock, flags);
|
||||
cdns3_select_ep(priv_dev, 0x00);
|
||||
|
||||
erdy_sent = !priv_dev->hw_configured_flag;
|
||||
cdns3_set_hw_configuration(priv_dev);
|
||||
|
||||
if (!erdy_sent)
|
||||
cdns3_ep0_complete_setup(priv_dev, 0, 1);
|
||||
|
||||
cdns3_allow_enable_l1(priv_dev, 1);
|
||||
|
||||
request->actual = 0;
|
||||
priv_dev->status_completion_no_call = true;
|
||||
priv_dev->pending_status_request = request;
|
||||
spin_unlock_irqrestore(&priv_dev->lock, flags);
|
||||
|
||||
/*
|
||||
* Since there is no completion interrupt for status stage,
|
||||
* it needs to call ->completion in software after
|
||||
* ep0_queue is back.
|
||||
*/
|
||||
queue_work(system_freezable_wq, &priv_dev->pending_status_wq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&priv_dev->lock, flags);
|
||||
if (!list_empty(&priv_ep->pending_req_list)) {
|
||||
dev_err(priv_dev->dev,
|
||||
"can't handle multiple requests for ep0\n");
|
||||
spin_unlock_irqrestore(&priv_dev->lock, flags);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
ret = usb_gadget_map_request_by_dev(priv_dev->sysdev, request,
|
||||
priv_dev->ep0_data_dir);
|
||||
if (ret) {
|
||||
spin_unlock_irqrestore(&priv_dev->lock, flags);
|
||||
dev_err(priv_dev->dev, "failed to map request\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
request->status = -EINPROGRESS;
|
||||
list_add_tail(&request->list, &priv_ep->pending_req_list);
|
||||
|
||||
if (request->zero && request->length &&
|
||||
(request->length % ep->maxpacket == 0))
|
||||
zlp = 1;
|
||||
|
||||
cdns3_ep0_run_transfer(priv_dev, request->dma, request->length, 1, zlp);
|
||||
|
||||
spin_unlock_irqrestore(&priv_dev->lock, flags);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_gadget_ep_set_wedge Set wedge on selected endpoint
|
||||
* @ep: endpoint object
|
||||
*
|
||||
* Returns 0
|
||||
*/
|
||||
int cdns3_gadget_ep_set_wedge(struct usb_ep *ep)
|
||||
{
|
||||
struct cdns3_endpoint *priv_ep = ep_to_cdns3_ep(ep);
|
||||
struct cdns3_device *priv_dev = priv_ep->cdns3_dev;
|
||||
|
||||
dev_dbg(priv_dev->dev, "Wedge for %s\n", ep->name);
|
||||
cdns3_gadget_ep_set_halt(ep, 1);
|
||||
priv_ep->flags |= EP_WEDGE;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
const struct usb_ep_ops cdns3_gadget_ep0_ops = {
|
||||
.enable = cdns3_gadget_ep0_enable,
|
||||
.disable = cdns3_gadget_ep0_disable,
|
||||
.alloc_request = cdns3_gadget_ep_alloc_request,
|
||||
.free_request = cdns3_gadget_ep_free_request,
|
||||
.queue = cdns3_gadget_ep0_queue,
|
||||
.dequeue = cdns3_gadget_ep_dequeue,
|
||||
.set_halt = cdns3_gadget_ep0_set_halt,
|
||||
.set_wedge = cdns3_gadget_ep_set_wedge,
|
||||
};
|
||||
|
||||
/**
|
||||
* cdns3_ep0_config - Configures default endpoint
|
||||
* @priv_dev: extended gadget object
|
||||
*
|
||||
* Functions sets parameters: maximal packet size and enables interrupts
|
||||
*/
|
||||
void cdns3_ep0_config(struct cdns3_device *priv_dev)
|
||||
{
|
||||
struct cdns3_usb_regs __iomem *regs;
|
||||
struct cdns3_endpoint *priv_ep;
|
||||
u32 max_packet_size = 64;
|
||||
|
||||
regs = priv_dev->regs;
|
||||
|
||||
if (priv_dev->gadget.speed == USB_SPEED_SUPER)
|
||||
max_packet_size = 512;
|
||||
|
||||
priv_ep = priv_dev->eps[0];
|
||||
|
||||
if (!list_empty(&priv_ep->pending_req_list)) {
|
||||
struct usb_request *request;
|
||||
|
||||
request = cdns3_next_request(&priv_ep->pending_req_list);
|
||||
list_del_init(&request->list);
|
||||
}
|
||||
|
||||
priv_dev->u1_allowed = 0;
|
||||
priv_dev->u2_allowed = 0;
|
||||
|
||||
priv_dev->gadget.ep0->maxpacket = max_packet_size;
|
||||
cdns3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(max_packet_size);
|
||||
|
||||
/* init ep out */
|
||||
cdns3_select_ep(priv_dev, USB_DIR_OUT);
|
||||
|
||||
if (priv_dev->dev_ver >= DEV_VER_V3) {
|
||||
cdns3_set_register_bit(&priv_dev->regs->dtrans,
|
||||
BIT(0) | BIT(16));
|
||||
cdns3_set_register_bit(&priv_dev->regs->tdl_from_trb,
|
||||
BIT(0) | BIT(16));
|
||||
}
|
||||
|
||||
writel(EP_CFG_ENABLE | EP_CFG_MAXPKTSIZE(max_packet_size),
|
||||
®s->ep_cfg);
|
||||
|
||||
writel(EP_STS_EN_SETUPEN | EP_STS_EN_DESCMISEN | EP_STS_EN_TRBERREN,
|
||||
®s->ep_sts_en);
|
||||
|
||||
/* init ep in */
|
||||
cdns3_select_ep(priv_dev, USB_DIR_IN);
|
||||
|
||||
writel(EP_CFG_ENABLE | EP_CFG_MAXPKTSIZE(max_packet_size),
|
||||
®s->ep_cfg);
|
||||
|
||||
writel(EP_STS_EN_SETUPEN | EP_STS_EN_TRBERREN, ®s->ep_sts_en);
|
||||
|
||||
cdns3_set_register_bit(®s->usb_conf, USB_CONF_U1DS | USB_CONF_U2DS);
|
||||
}
|
||||
|
||||
/**
|
||||
* cdns3_init_ep0 Initializes software endpoint 0 of gadget
|
||||
* @priv_dev: extended gadget object
|
||||
* @ep_priv: extended endpoint object
|
||||
*
|
||||
* Returns 0 on success else error code.
|
||||
*/
|
||||
int cdns3_init_ep0(struct cdns3_device *priv_dev,
|
||||
struct cdns3_endpoint *priv_ep)
|
||||
{
|
||||
sprintf(priv_ep->name, "ep0");
|
||||
|
||||
/* fill linux fields */
|
||||
priv_ep->endpoint.ops = &cdns3_gadget_ep0_ops;
|
||||
priv_ep->endpoint.maxburst = 1;
|
||||
usb_ep_set_maxpacket_limit(&priv_ep->endpoint,
|
||||
CDNS3_EP0_MAX_PACKET_LIMIT);
|
||||
priv_ep->endpoint.address = 0;
|
||||
priv_ep->endpoint.caps.type_control = 1;
|
||||
priv_ep->endpoint.caps.dir_in = 1;
|
||||
priv_ep->endpoint.caps.dir_out = 1;
|
||||
priv_ep->endpoint.name = priv_ep->name;
|
||||
priv_ep->endpoint.desc = &cdns3_gadget_ep0_desc;
|
||||
priv_dev->gadget.ep0 = &priv_ep->endpoint;
|
||||
priv_ep->type = USB_ENDPOINT_XFER_CONTROL;
|
||||
|
||||
return cdns3_allocate_trb_pool(priv_ep);
|
||||
}
|
||||
|
|
@ -0,0 +1,28 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Cadence USBSS DRD Driver - Gadget Export APIs.
|
||||
*
|
||||
* Copyright (C) 2017 NXP
|
||||
* Copyright (C) 2017-2018 NXP
|
||||
*
|
||||
* Authors: Peter Chen <peter.chen@nxp.com>
|
||||
*/
|
||||
#ifndef __LINUX_CDNS3_GADGET_EXPORT
|
||||
#define __LINUX_CDNS3_GADGET_EXPORT
|
||||
|
||||
#ifdef CONFIG_USB_CDNS3_GADGET
|
||||
|
||||
int cdns3_gadget_init(struct cdns3 *cdns);
|
||||
void cdns3_gadget_exit(struct cdns3 *cdns);
|
||||
#else
|
||||
|
||||
static inline int cdns3_gadget_init(struct cdns3 *cdns)
|
||||
{
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
static inline void cdns3_gadget_exit(struct cdns3 *cdns) { }
|
||||
|
||||
#endif
|
||||
|
||||
#endif /* __LINUX_CDNS3_GADGET_EXPORT */
|
||||
Разница между файлами не показана из-за своего большого размера
Загрузить разницу
Разница между файлами не показана из-за своего большого размера
Загрузить разницу
|
|
@ -0,0 +1,28 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Cadence USBSS DRD Driver - Host Export APIs
|
||||
*
|
||||
* Copyright (C) 2017-2018 NXP
|
||||
*
|
||||
* Authors: Peter Chen <peter.chen@nxp.com>
|
||||
*/
|
||||
#ifndef __LINUX_CDNS3_HOST_EXPORT
|
||||
#define __LINUX_CDNS3_HOST_EXPORT
|
||||
|
||||
#ifdef CONFIG_USB_CDNS3_HOST
|
||||
|
||||
int cdns3_host_init(struct cdns3 *cdns);
|
||||
void cdns3_host_exit(struct cdns3 *cdns);
|
||||
|
||||
#else
|
||||
|
||||
static inline int cdns3_host_init(struct cdns3 *cdns)
|
||||
{
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
static inline void cdns3_host_exit(struct cdns3 *cdns) { }
|
||||
|
||||
#endif /* CONFIG_USB_CDNS3_HOST */
|
||||
|
||||
#endif /* __LINUX_CDNS3_HOST_EXPORT */
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Cadence USBSS DRD Driver - host side
|
||||
*
|
||||
* Copyright (C) 2018 Cadence Design Systems.
|
||||
* Copyright (C) 2017-2018 NXP
|
||||
*
|
||||
* Authors: Peter Chen <peter.chen@nxp.com>
|
||||
* Pawel Laszczak <pawell@cadence.com>
|
||||
*/
|
||||
|
||||
#include <linux/platform_device.h>
|
||||
#include "core.h"
|
||||
#include "drd.h"
|
||||
|
||||
static int __cdns3_host_init(struct cdns3 *cdns)
|
||||
{
|
||||
struct platform_device *xhci;
|
||||
int ret;
|
||||
|
||||
cdns3_drd_switch_host(cdns, 1);
|
||||
|
||||
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
|
||||
if (!xhci) {
|
||||
dev_err(cdns->dev, "couldn't allocate xHCI device\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
xhci->dev.parent = cdns->dev;
|
||||
cdns->host_dev = xhci;
|
||||
|
||||
ret = platform_device_add_resources(xhci, cdns->xhci_res,
|
||||
CDNS3_XHCI_RESOURCES_NUM);
|
||||
if (ret) {
|
||||
dev_err(cdns->dev, "couldn't add resources to xHCI device\n");
|
||||
goto err1;
|
||||
}
|
||||
|
||||
ret = platform_device_add(xhci);
|
||||
if (ret) {
|
||||
dev_err(cdns->dev, "failed to register xHCI device\n");
|
||||
goto err1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
err1:
|
||||
platform_device_put(xhci);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void cdns3_host_exit(struct cdns3 *cdns)
|
||||
{
|
||||
platform_device_unregister(cdns->host_dev);
|
||||
cdns->host_dev = NULL;
|
||||
cdns3_drd_switch_host(cdns, 0);
|
||||
}
|
||||
|
||||
int cdns3_host_init(struct cdns3 *cdns)
|
||||
{
|
||||
struct cdns3_role_driver *rdrv;
|
||||
|
||||
rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
|
||||
if (!rdrv)
|
||||
return -ENOMEM;
|
||||
|
||||
rdrv->start = __cdns3_host_init;
|
||||
rdrv->stop = cdns3_host_exit;
|
||||
rdrv->state = CDNS3_ROLE_STATE_INACTIVE;
|
||||
rdrv->suspend = NULL;
|
||||
rdrv->resume = NULL;
|
||||
rdrv->name = "host";
|
||||
|
||||
cdns->roles[CDNS3_ROLE_HOST] = rdrv;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* USBSS device controller driver Trace Support
|
||||
*
|
||||
* Copyright (C) 2018 Cadence.
|
||||
*
|
||||
* Author: Pawel Laszczak <pawell@cadence.com>
|
||||
*/
|
||||
|
||||
#define CREATE_TRACE_POINTS
|
||||
#include "trace.h"
|
||||
|
||||
void cdns3_dbg(struct cdns3_device *priv_dev, const char *fmt, ...)
|
||||
{
|
||||
struct va_format vaf;
|
||||
va_list args;
|
||||
|
||||
va_start(args, fmt);
|
||||
vaf.fmt = fmt;
|
||||
vaf.va = &args;
|
||||
trace_cdns3_log(priv_dev, &vaf);
|
||||
va_end(args);
|
||||
}
|
||||
|
|
@ -0,0 +1,447 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* USBSS device controller driver.
|
||||
* Trace support header file.
|
||||
*
|
||||
* Copyright (C) 2018 Cadence.
|
||||
*
|
||||
* Author: Pawel Laszczak <pawell@cadence.com>
|
||||
*/
|
||||
|
||||
#undef TRACE_SYSTEM
|
||||
#define TRACE_SYSTEM cdns3
|
||||
|
||||
#if !defined(__LINUX_CDNS3_TRACE) || defined(TRACE_HEADER_MULTI_READ)
|
||||
#define __LINUX_CDNS3_TRACE
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/tracepoint.h>
|
||||
#include <asm/byteorder.h>
|
||||
#include <linux/usb/ch9.h>
|
||||
#include "core.h"
|
||||
#include "gadget.h"
|
||||
#include "debug.h"
|
||||
|
||||
#define CDNS3_MSG_MAX 500
|
||||
|
||||
TRACE_EVENT(cdns3_log,
|
||||
TP_PROTO(struct cdns3_device *priv_dev, struct va_format *vaf),
|
||||
TP_ARGS(priv_dev, vaf),
|
||||
TP_STRUCT__entry(
|
||||
__string(name, dev_name(priv_dev->dev))
|
||||
__dynamic_array(char, msg, CDNS3_MSG_MAX)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__assign_str(name, dev_name(priv_dev->dev));
|
||||
vsnprintf(__get_str(msg), CDNS3_MSG_MAX, vaf->fmt, *vaf->va);
|
||||
),
|
||||
TP_printk("%s: %s", __get_str(name), __get_str(msg))
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_doorbell,
|
||||
TP_PROTO(const char *ep_name, u32 ep_trbaddr),
|
||||
TP_ARGS(ep_name, ep_trbaddr),
|
||||
TP_STRUCT__entry(
|
||||
__string(name, ep_name)
|
||||
__field(u32, ep_trbaddr)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__assign_str(name, ep_name);
|
||||
__entry->ep_trbaddr = ep_trbaddr;
|
||||
),
|
||||
TP_printk("//Ding Dong %s, ep_trbaddr %08x", __get_str(name),
|
||||
__entry->ep_trbaddr)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_doorbell, cdns3_doorbell_ep0,
|
||||
TP_PROTO(const char *ep_name, u32 ep_trbaddr),
|
||||
TP_ARGS(ep_name, ep_trbaddr)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_doorbell, cdns3_doorbell_epx,
|
||||
TP_PROTO(const char *ep_name, u32 ep_trbaddr),
|
||||
TP_ARGS(ep_name, ep_trbaddr)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_usb_irq,
|
||||
TP_PROTO(struct cdns3_device *priv_dev, u32 usb_ists),
|
||||
TP_ARGS(priv_dev, usb_ists),
|
||||
TP_STRUCT__entry(
|
||||
__field(enum usb_device_speed, speed)
|
||||
__field(u32, usb_ists)
|
||||
__dynamic_array(char, str, CDNS3_MSG_MAX)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->speed = cdns3_get_speed(priv_dev);
|
||||
__entry->usb_ists = usb_ists;
|
||||
),
|
||||
TP_printk("%s", cdns3_decode_usb_irq(__get_str(str), __entry->speed,
|
||||
__entry->usb_ists))
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_usb_irq, cdns3_usb_irq,
|
||||
TP_PROTO(struct cdns3_device *priv_dev, u32 usb_ists),
|
||||
TP_ARGS(priv_dev, usb_ists)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_epx_irq,
|
||||
TP_PROTO(struct cdns3_device *priv_dev, struct cdns3_endpoint *priv_ep),
|
||||
TP_ARGS(priv_dev, priv_ep),
|
||||
TP_STRUCT__entry(
|
||||
__string(ep_name, priv_ep->name)
|
||||
__field(u32, ep_sts)
|
||||
__field(u32, ep_traddr)
|
||||
__dynamic_array(char, str, CDNS3_MSG_MAX)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__assign_str(ep_name, priv_ep->name);
|
||||
__entry->ep_sts = readl(&priv_dev->regs->ep_sts);
|
||||
__entry->ep_traddr = readl(&priv_dev->regs->ep_traddr);
|
||||
),
|
||||
TP_printk("%s, ep_traddr: %08x",
|
||||
cdns3_decode_epx_irq(__get_str(str),
|
||||
__get_str(ep_name),
|
||||
__entry->ep_sts),
|
||||
__entry->ep_traddr)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_epx_irq, cdns3_epx_irq,
|
||||
TP_PROTO(struct cdns3_device *priv_dev, struct cdns3_endpoint *priv_ep),
|
||||
TP_ARGS(priv_dev, priv_ep)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_ep0_irq,
|
||||
TP_PROTO(struct cdns3_device *priv_dev, u32 ep_sts),
|
||||
TP_ARGS(priv_dev, ep_sts),
|
||||
TP_STRUCT__entry(
|
||||
__field(int, ep_dir)
|
||||
__field(u32, ep_sts)
|
||||
__dynamic_array(char, str, CDNS3_MSG_MAX)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->ep_dir = priv_dev->ep0_data_dir;
|
||||
__entry->ep_sts = ep_sts;
|
||||
),
|
||||
TP_printk("%s", cdns3_decode_ep0_irq(__get_str(str),
|
||||
__entry->ep_dir,
|
||||
__entry->ep_sts))
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_ep0_irq, cdns3_ep0_irq,
|
||||
TP_PROTO(struct cdns3_device *priv_dev, u32 ep_sts),
|
||||
TP_ARGS(priv_dev, ep_sts)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_ctrl,
|
||||
TP_PROTO(struct usb_ctrlrequest *ctrl),
|
||||
TP_ARGS(ctrl),
|
||||
TP_STRUCT__entry(
|
||||
__field(u8, bRequestType)
|
||||
__field(u8, bRequest)
|
||||
__field(u16, wValue)
|
||||
__field(u16, wIndex)
|
||||
__field(u16, wLength)
|
||||
__dynamic_array(char, str, CDNS3_MSG_MAX)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->bRequestType = ctrl->bRequestType;
|
||||
__entry->bRequest = ctrl->bRequest;
|
||||
__entry->wValue = le16_to_cpu(ctrl->wValue);
|
||||
__entry->wIndex = le16_to_cpu(ctrl->wIndex);
|
||||
__entry->wLength = le16_to_cpu(ctrl->wLength);
|
||||
),
|
||||
TP_printk("%s", usb_decode_ctrl(__get_str(str), CDNS3_MSG_MAX,
|
||||
__entry->bRequestType,
|
||||
__entry->bRequest, __entry->wValue,
|
||||
__entry->wIndex, __entry->wLength)
|
||||
)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_ctrl, cdns3_ctrl_req,
|
||||
TP_PROTO(struct usb_ctrlrequest *ctrl),
|
||||
TP_ARGS(ctrl)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_request,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req),
|
||||
TP_STRUCT__entry(
|
||||
__string(name, req->priv_ep->name)
|
||||
__field(struct cdns3_request *, req)
|
||||
__field(void *, buf)
|
||||
__field(unsigned int, actual)
|
||||
__field(unsigned int, length)
|
||||
__field(int, status)
|
||||
__field(int, zero)
|
||||
__field(int, short_not_ok)
|
||||
__field(int, no_interrupt)
|
||||
__field(int, start_trb)
|
||||
__field(int, end_trb)
|
||||
__field(struct cdns3_trb *, start_trb_addr)
|
||||
__field(int, flags)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__assign_str(name, req->priv_ep->name);
|
||||
__entry->req = req;
|
||||
__entry->buf = req->request.buf;
|
||||
__entry->actual = req->request.actual;
|
||||
__entry->length = req->request.length;
|
||||
__entry->status = req->request.status;
|
||||
__entry->zero = req->request.zero;
|
||||
__entry->short_not_ok = req->request.short_not_ok;
|
||||
__entry->no_interrupt = req->request.no_interrupt;
|
||||
__entry->start_trb = req->start_trb;
|
||||
__entry->end_trb = req->end_trb;
|
||||
__entry->start_trb_addr = req->trb;
|
||||
__entry->flags = req->flags;
|
||||
),
|
||||
TP_printk("%s: req: %p, req buff %p, length: %u/%u %s%s%s, status: %d,"
|
||||
" trb: [start:%d, end:%d: virt addr %pa], flags:%x ",
|
||||
__get_str(name), __entry->req, __entry->buf, __entry->actual,
|
||||
__entry->length,
|
||||
__entry->zero ? "zero | " : "",
|
||||
__entry->short_not_ok ? "short | " : "",
|
||||
__entry->no_interrupt ? "no int" : "",
|
||||
__entry->status,
|
||||
__entry->start_trb,
|
||||
__entry->end_trb,
|
||||
__entry->start_trb_addr,
|
||||
__entry->flags
|
||||
)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_request, cdns3_alloc_request,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_request, cdns3_free_request,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_request, cdns3_ep_queue,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_request, cdns3_ep_dequeue,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_request, cdns3_gadget_giveback,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_aligned_request,
|
||||
TP_PROTO(struct cdns3_request *priv_req),
|
||||
TP_ARGS(priv_req),
|
||||
TP_STRUCT__entry(
|
||||
__string(name, priv_req->priv_ep->name)
|
||||
__field(struct usb_request *, req)
|
||||
__field(void *, buf)
|
||||
__field(dma_addr_t, dma)
|
||||
__field(void *, aligned_buf)
|
||||
__field(dma_addr_t, aligned_dma)
|
||||
__field(u32, aligned_buf_size)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__assign_str(name, priv_req->priv_ep->name);
|
||||
__entry->req = &priv_req->request;
|
||||
__entry->buf = priv_req->request.buf;
|
||||
__entry->dma = priv_req->request.dma;
|
||||
__entry->aligned_buf = priv_req->aligned_buf->buf;
|
||||
__entry->aligned_dma = priv_req->aligned_buf->dma;
|
||||
__entry->aligned_buf_size = priv_req->aligned_buf->size;
|
||||
),
|
||||
TP_printk("%s: req: %p, req buf %p, dma %pad a_buf %p a_dma %pad, size %d",
|
||||
__get_str(name), __entry->req, __entry->buf, &__entry->dma,
|
||||
__entry->aligned_buf, &__entry->aligned_dma,
|
||||
__entry->aligned_buf_size
|
||||
)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_aligned_request, cdns3_free_aligned_request,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_aligned_request, cdns3_prepare_aligned_request,
|
||||
TP_PROTO(struct cdns3_request *req),
|
||||
TP_ARGS(req)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_trb,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep, struct cdns3_trb *trb),
|
||||
TP_ARGS(priv_ep, trb),
|
||||
TP_STRUCT__entry(
|
||||
__string(name, priv_ep->name)
|
||||
__field(struct cdns3_trb *, trb)
|
||||
__field(u32, buffer)
|
||||
__field(u32, length)
|
||||
__field(u32, control)
|
||||
__field(u32, type)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__assign_str(name, priv_ep->name);
|
||||
__entry->trb = trb;
|
||||
__entry->buffer = trb->buffer;
|
||||
__entry->length = trb->length;
|
||||
__entry->control = trb->control;
|
||||
__entry->type = usb_endpoint_type(priv_ep->endpoint.desc);
|
||||
),
|
||||
TP_printk("%s: trb %p, dma buf: 0x%08x, size: %ld, burst: %d ctrl: 0x%08x (%s%s%s%s%s%s%s)",
|
||||
__get_str(name), __entry->trb, __entry->buffer,
|
||||
TRB_LEN(__entry->length),
|
||||
(u8)TRB_BURST_LEN_GET(__entry->length),
|
||||
__entry->control,
|
||||
__entry->control & TRB_CYCLE ? "C=1, " : "C=0, ",
|
||||
__entry->control & TRB_TOGGLE ? "T=1, " : "T=0, ",
|
||||
__entry->control & TRB_ISP ? "ISP, " : "",
|
||||
__entry->control & TRB_FIFO_MODE ? "FIFO, " : "",
|
||||
__entry->control & TRB_CHAIN ? "CHAIN, " : "",
|
||||
__entry->control & TRB_IOC ? "IOC, " : "",
|
||||
TRB_FIELD_TO_TYPE(__entry->control) == TRB_NORMAL ? "Normal" : "LINK"
|
||||
)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_trb, cdns3_prepare_trb,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep, struct cdns3_trb *trb),
|
||||
TP_ARGS(priv_ep, trb)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_trb, cdns3_complete_trb,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep, struct cdns3_trb *trb),
|
||||
TP_ARGS(priv_ep, trb)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_ring,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep),
|
||||
TP_ARGS(priv_ep),
|
||||
TP_STRUCT__entry(
|
||||
__dynamic_array(u8, ring, TRB_RING_SIZE)
|
||||
__dynamic_array(u8, priv_ep, sizeof(struct cdns3_endpoint))
|
||||
__dynamic_array(char, buffer,
|
||||
(TRBS_PER_SEGMENT * 65) + CDNS3_MSG_MAX)
|
||||
),
|
||||
TP_fast_assign(
|
||||
memcpy(__get_dynamic_array(priv_ep), priv_ep,
|
||||
sizeof(struct cdns3_endpoint));
|
||||
memcpy(__get_dynamic_array(ring), priv_ep->trb_pool,
|
||||
TRB_RING_SIZE);
|
||||
),
|
||||
|
||||
TP_printk("%s",
|
||||
cdns3_dbg_ring((struct cdns3_endpoint *)__get_str(priv_ep),
|
||||
(struct cdns3_trb *)__get_str(ring),
|
||||
__get_str(buffer)))
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_ring, cdns3_ring,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep),
|
||||
TP_ARGS(priv_ep)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_ep,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep),
|
||||
TP_ARGS(priv_ep),
|
||||
TP_STRUCT__entry(
|
||||
__string(name, priv_ep->name)
|
||||
__field(unsigned int, maxpacket)
|
||||
__field(unsigned int, maxpacket_limit)
|
||||
__field(unsigned int, max_streams)
|
||||
__field(unsigned int, maxburst)
|
||||
__field(unsigned int, flags)
|
||||
__field(unsigned int, dir)
|
||||
__field(u8, enqueue)
|
||||
__field(u8, dequeue)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__assign_str(name, priv_ep->name);
|
||||
__entry->maxpacket = priv_ep->endpoint.maxpacket;
|
||||
__entry->maxpacket_limit = priv_ep->endpoint.maxpacket_limit;
|
||||
__entry->max_streams = priv_ep->endpoint.max_streams;
|
||||
__entry->maxburst = priv_ep->endpoint.maxburst;
|
||||
__entry->flags = priv_ep->flags;
|
||||
__entry->dir = priv_ep->dir;
|
||||
__entry->enqueue = priv_ep->enqueue;
|
||||
__entry->dequeue = priv_ep->dequeue;
|
||||
),
|
||||
TP_printk("%s: mps: %d/%d. streams: %d, burst: %d, enq idx: %d, "
|
||||
"deq idx: %d, flags %s%s%s%s%s%s%s%s, dir: %s",
|
||||
__get_str(name), __entry->maxpacket,
|
||||
__entry->maxpacket_limit, __entry->max_streams,
|
||||
__entry->maxburst, __entry->enqueue,
|
||||
__entry->dequeue,
|
||||
__entry->flags & EP_ENABLED ? "EN | " : "",
|
||||
__entry->flags & EP_STALL ? "STALL | " : "",
|
||||
__entry->flags & EP_WEDGE ? "WEDGE | " : "",
|
||||
__entry->flags & EP_TRANSFER_STARTED ? "STARTED | " : "",
|
||||
__entry->flags & EP_UPDATE_EP_TRBADDR ? "UPD TRB | " : "",
|
||||
__entry->flags & EP_PENDING_REQUEST ? "REQ PEN | " : "",
|
||||
__entry->flags & EP_RING_FULL ? "RING FULL |" : "",
|
||||
__entry->flags & EP_CLAIMED ? "CLAIMED " : "",
|
||||
__entry->dir ? "IN" : "OUT"
|
||||
)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_ep, cdns3_gadget_ep_enable,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep),
|
||||
TP_ARGS(priv_ep)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_ep, cdns3_gadget_ep_disable,
|
||||
TP_PROTO(struct cdns3_endpoint *priv_ep),
|
||||
TP_ARGS(priv_ep)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(cdns3_log_request_handled,
|
||||
TP_PROTO(struct cdns3_request *priv_req, int current_index,
|
||||
int handled),
|
||||
TP_ARGS(priv_req, current_index, handled),
|
||||
TP_STRUCT__entry(
|
||||
__field(struct cdns3_request *, priv_req)
|
||||
__field(unsigned int, dma_position)
|
||||
__field(unsigned int, handled)
|
||||
__field(unsigned int, dequeue_idx)
|
||||
__field(unsigned int, enqueue_idx)
|
||||
__field(unsigned int, start_trb)
|
||||
__field(unsigned int, end_trb)
|
||||
),
|
||||
TP_fast_assign(
|
||||
__entry->priv_req = priv_req;
|
||||
__entry->dma_position = current_index;
|
||||
__entry->handled = handled;
|
||||
__entry->dequeue_idx = priv_req->priv_ep->dequeue;
|
||||
__entry->enqueue_idx = priv_req->priv_ep->enqueue;
|
||||
__entry->start_trb = priv_req->start_trb;
|
||||
__entry->end_trb = priv_req->end_trb;
|
||||
),
|
||||
TP_printk("Req: %p %s, DMA pos: %d, ep deq: %d, ep enq: %d,"
|
||||
" start trb: %d, end trb: %d",
|
||||
__entry->priv_req,
|
||||
__entry->handled ? "handled" : "not handled",
|
||||
__entry->dma_position, __entry->dequeue_idx,
|
||||
__entry->enqueue_idx, __entry->start_trb,
|
||||
__entry->end_trb
|
||||
)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(cdns3_log_request_handled, cdns3_request_handled,
|
||||
TP_PROTO(struct cdns3_request *priv_req, int current_index,
|
||||
int handled),
|
||||
TP_ARGS(priv_req, current_index, handled)
|
||||
);
|
||||
#endif /* __LINUX_CDNS3_TRACE */
|
||||
|
||||
/* this part must be outside header guard */
|
||||
|
||||
#undef TRACE_INCLUDE_PATH
|
||||
#define TRACE_INCLUDE_PATH .
|
||||
|
||||
#undef TRACE_INCLUDE_FILE
|
||||
#define TRACE_INCLUDE_FILE trace
|
||||
|
||||
#include <trace/define_trace.h>
|
||||
Загрузка…
Ссылка в новой задаче