diff options
| -rw-r--r-- | drivers/usb/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/usb/Makefile | 2 | ||||
| -rw-r--r-- | drivers/usb/cdns3/Kconfig | 44 | ||||
| -rw-r--r-- | drivers/usb/cdns3/Makefile | 14 | ||||
| -rw-r--r-- | drivers/usb/cdns3/cdns3-pci-wrap.c | 157 | ||||
| -rw-r--r-- | drivers/usb/cdns3/core.c | 543 | ||||
| -rw-r--r-- | drivers/usb/cdns3/core.h | 121 | ||||
| -rw-r--r-- | drivers/usb/cdns3/debug.h | 173 | ||||
| -rw-r--r-- | drivers/usb/cdns3/debugfs.c | 153 | ||||
| -rw-r--r-- | drivers/usb/cdns3/drd.c | 379 | ||||
| -rw-r--r-- | drivers/usb/cdns3/drd.h | 166 | ||||
| -rw-r--r-- | drivers/usb/cdns3/ep0.c | 920 | ||||
| -rw-r--r-- | drivers/usb/cdns3/gadget-export.h | 28 | ||||
| -rw-r--r-- | drivers/usb/cdns3/gadget.c | 2319 | ||||
| -rw-r--r-- | drivers/usb/cdns3/gadget.h | 1321 | ||||
| -rw-r--r-- | drivers/usb/cdns3/host-export.h | 28 | ||||
| -rw-r--r-- | drivers/usb/cdns3/host.c | 76 | ||||
| -rw-r--r-- | drivers/usb/cdns3/trace.c | 23 | ||||
| -rw-r--r-- | drivers/usb/cdns3/trace.h | 447 |
19 files changed, 0 insertions, 6916 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 42a5b1ac5aea..94573fb68304 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -113,8 +113,6 @@ source "drivers/usb/usbip/Kconfig" endif -source "drivers/usb/cdns3/Kconfig" - source "drivers/usb/mtu3/Kconfig" source "drivers/usb/musb/Kconfig" diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 09fc9f2448ce..ecc2de1ffaae 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -13,8 +13,6 @@ obj-$(CONFIG_USB_DWC3) += dwc3/ obj-$(CONFIG_USB_DWC2) += dwc2/ obj-$(CONFIG_USB_ISP1760) += isp1760/ -obj-$(CONFIG_USB_CDNS3) += cdns3/ - obj-$(CONFIG_USB_MON) += mon/ obj-$(CONFIG_USB_MTU3) += mtu3/ diff --git a/drivers/usb/cdns3/Kconfig b/drivers/usb/cdns3/Kconfig deleted file mode 100644 index 118ec91c4c70..000000000000 --- a/drivers/usb/cdns3/Kconfig +++ /dev/null @@ -1,44 +0,0 @@ -config USB_CDNS3 - tristate "Cadence USB3 Dual-Role Controller" - depends on USB_SUPPORT && (USB || USB_GADGET) && HAS_DMA - help - Say Y here if your system has a Cadence USB3 dual-role controller. - It supports: dual-role switch, Host-only, and Peripheral-only. - - If you choose to build this driver is a dynamically linked - as module, the module will be called cdns3.ko. - -if USB_CDNS3 - -config USB_CDNS3_GADGET - bool "Cadence USB3 device controller" - depends on USB_GADGET - help - Say Y here to enable device controller functionality of the - Cadence USBSS-DEV driver. - - This controller supports FF, HS and SS mode. It doesn't support - LS and SSP mode. - -config USB_CDNS3_HOST - bool "Cadence USB3 host controller" - depends on USB_XHCI_HCD - help - Say Y here to enable host controller functionality of the - Cadence driver. - - Host controller is compliant with XHCI so it will use - standard XHCI driver. - -config USB_CDNS3_PCI_WRAP - tristate "Cadence USB3 support on PCIe-based platforms" - depends on USB_PCI && ACPI - default USB_CDNS3 - help - If you're using the USBSS Core IP with a PCIe, please say - 'Y' or 'M' here. - - If you choose to build this driver as module it will - be dynamically linked and module will be called cdns3-pci.ko - -endif diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile deleted file mode 100644 index 46c27b94b94b..000000000000 --- a/drivers/usb/cdns3/Makefile +++ /dev/null @@ -1,14 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# define_trace.h needs to know how to find our header -CFLAGS_trace.o := -I$(src) - -cdns3-y := core.o drd.o - -obj-$(CONFIG_USB_CDNS3) += cdns3.o -ifneq ($(CONFIG_DEBUG_FS),) - cdns3-y += debugfs.o -endif - -cdns3-$(CONFIG_USB_CDNS3_GADGET) += gadget.o ep0.o trace.o -cdns3-$(CONFIG_USB_CDNS3_HOST) += host.o -obj-$(CONFIG_USB_CDNS3_PCI_WRAP) += cdns3-pci-wrap.o diff --git a/drivers/usb/cdns3/cdns3-pci-wrap.c b/drivers/usb/cdns3/cdns3-pci-wrap.c deleted file mode 100644 index 65b61ea246b1..000000000000 --- a/drivers/usb/cdns3/cdns3-pci-wrap.c +++ /dev/null @@ -1,157 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Cadence USBSS PCI Glue driver - * - * Copyright (C) 2018-2019 Cadence. - * - * Author: Pawel Laszczak <pawell@cadence.com> - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/slab.h> - -struct cdns3_wrap { - struct platform_device *plat_dev; - struct pci_dev *hg_dev; - struct resource dev_res[6]; -}; - -#define RES_IRQ_HOST_ID 0 -#define RES_IRQ_PERIPHERAL_ID 1 -#define RES_IRQ_OTG_ID 2 -#define RES_HOST_ID 3 -#define RES_DEV_ID 4 -#define RES_DRD_ID 5 - -#define PCI_BAR_HOST 0 -#define PCI_BAR_DEV 2 -#define PCI_BAR_OTG 4 - -#define PCI_DEV_FN_HOST_DEVICE 0 -#define PCI_DEV_FN_OTG 1 - -#define PCI_DRIVER_NAME "cdns3-pci-usbss" -#define PLAT_DRIVER_NAME "cdns-usb3" - -#define CDNS_VENDOR_ID 0x17cd -#define CDNS_DEVICE_ID 0x0100 - -static int cdns3_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - struct platform_device_info plat_info; - struct cdns3_wrap *wrap; - struct resource *res; - int err; - - /* - * for GADGET/HOST PCI (devfn) function number is 0, - * for OTG PCI (devfn) function number is 1 - */ - if (!id || pdev->devfn != PCI_DEV_FN_HOST_DEVICE) - return -EINVAL; - - err = pcim_enable_device(pdev); - if (err) { - dev_err(&pdev->dev, "Enabling PCI device has failed %d\n", err); - return err; - } - - pci_set_master(pdev); - wrap = devm_kzalloc(&pdev->dev, sizeof(*wrap), GFP_KERNEL); - if (!wrap) { - pci_disable_device(pdev); - return -ENOMEM; - } - - /* function 0: host(BAR_0) + device(BAR_1) + otg(BAR_2)). */ - dev_dbg(&pdev->dev, "Initialize Device resources\n"); - res = wrap->dev_res; - - res[RES_DEV_ID].start = pci_resource_start(pdev, PCI_BAR_DEV); - res[RES_DEV_ID].end = pci_resource_end(pdev, PCI_BAR_DEV); - res[RES_DEV_ID].name = "dev"; - res[RES_DEV_ID].flags = IORESOURCE_MEM; - dev_dbg(&pdev->dev, "USBSS-DEV physical base addr: %pa\n", - &res[RES_DEV_ID].start); - - res[RES_HOST_ID].start = pci_resource_start(pdev, PCI_BAR_HOST); - res[RES_HOST_ID].end = pci_resource_end(pdev, PCI_BAR_HOST); - res[RES_HOST_ID].name = "xhci"; - res[RES_HOST_ID].flags = IORESOURCE_MEM; - dev_dbg(&pdev->dev, "USBSS-XHCI physical base addr: %pa\n", - &res[RES_HOST_ID].start); - - res[RES_DRD_ID].start = pci_resource_start(pdev, PCI_BAR_OTG); - res[RES_DRD_ID].end = pci_resource_end(pdev, PCI_BAR_OTG); - res[RES_DRD_ID].name = "otg"; - res[RES_DRD_ID].flags = IORESOURCE_MEM; - dev_dbg(&pdev->dev, "USBSS-DRD physical base addr: %pa\n", - &res[RES_DRD_ID].start); - - /* Interrupt for XHCI */ - wrap->dev_res[RES_IRQ_HOST_ID].start = pdev->irq; - wrap->dev_res[RES_IRQ_HOST_ID].name = "host"; - wrap->dev_res[RES_IRQ_HOST_ID].flags = IORESOURCE_IRQ; - - /* Interrupt device. It's the same as for HOST. */ - wrap->dev_res[RES_IRQ_PERIPHERAL_ID].start = pdev->irq; - wrap->dev_res[RES_IRQ_PERIPHERAL_ID].name = "peripheral"; - wrap->dev_res[RES_IRQ_PERIPHERAL_ID].flags = IORESOURCE_IRQ; - - /* Interrupt for OTG/DRD. */ - wrap->dev_res[RES_IRQ_OTG_ID].start = pdev->irq; - wrap->dev_res[RES_IRQ_OTG_ID].name = "otg"; - wrap->dev_res[RES_IRQ_OTG_ID].flags = IORESOURCE_IRQ; - - /* set up platform device info */ - memset(&plat_info, 0, sizeof(plat_info)); - plat_info.parent = &pdev->dev; - plat_info.fwnode = pdev->dev.fwnode; - plat_info.name = PLAT_DRIVER_NAME; - plat_info.id = pdev->devfn; - plat_info.res = wrap->dev_res; - plat_info.num_res = ARRAY_SIZE(wrap->dev_res); - plat_info.dma_mask = pdev->dma_mask; - - /* register platform device */ - wrap->plat_dev = platform_device_register_full(&plat_info); - if (IS_ERR(wrap->plat_dev)) { - pci_disable_device(pdev); - return PTR_ERR(wrap->plat_dev); - } - - pci_set_drvdata(pdev, wrap); - - return err; -} - -static void cdns3_pci_remove(struct pci_dev *pdev) -{ - struct cdns3_wrap *wrap = (struct cdns3_wrap *)pci_get_drvdata(pdev); - - platform_device_unregister(wrap->plat_dev); -} - -static const struct pci_device_id cdns3_pci_ids[] = { - { PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), }, - { 0, } -}; - -static struct pci_driver cdns3_pci_driver = { - .name = PCI_DRIVER_NAME, - .id_table = cdns3_pci_ids, - .probe = cdns3_pci_probe, - .remove = cdns3_pci_remove, -}; - -module_pci_driver(cdns3_pci_driver); -MODULE_DEVICE_TABLE(pci, cdns3_pci_ids); - -MODULE_AUTHOR("Pawel Laszczak <pawell@cadence.com>"); -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("Cadence USBSS PCI wrapperr"); diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c deleted file mode 100644 index ddc73f1c87c5..000000000000 --- a/drivers/usb/cdns3/core.c +++ /dev/null @@ -1,543 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Cadence USBSS DRD Driver. - * - * Copyright (C) 2018-2019 Cadence. - * Copyright (C) 2017-2018 NXP - * Copyright (C) 2019 Texas Instruments - * - * Author: Peter Chen <peter.chen@nxp.com> - * Pawel Laszczak <pawell@cadence.com> - * Roger Quadros <rogerq@ti.com> - */ - -#include <linux/dma-mapping.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/pm_runtime.h> - -#include "gadget.h" -#include "core.h" -#include "host-export.h" -#include "gadget-export.h" -#include "drd.h" -#include "debug.h" - -/** - * cdns3_handshake - spin reading until handshake completes or fails - * @ptr: address of device controller register to be read - * @mask: bits to look at in result of read - * @done: value of those bits when handshake succeeds - * @usec: timeout in microseconds - * - * Returns negative errno, or zero on success - * - * Success happens when the "mask" bits have the specified value (hardware - * handshake done). There are two failure modes: "usec" have passed (major - * hardware flakeout), or the register reads as all-ones (hardware removed). - */ -int cdns3_handshake(void __iomem *ptr, u32 mask, u32 done, int usec) -{ - u32 result; - - do { - result = readl(ptr); - if (result == ~(u32)0) /* card removed */ - return -ENODEV; - - result &= mask; - if (result == done) - return 0; - - udelay(1); - usec--; - } while (usec > 0); - - return -ETIMEDOUT; -} - -static inline -struct cdns3_role_driver *cdns3_get_current_role_driver(struct cdns3 *cdns) -{ - WARN_ON(cdns->role >= CDNS3_ROLE_END || !cdns->roles[cdns->role]); - return cdns->roles[cdns->role]; -} - -static int cdns3_role_start(struct cdns3 *cdns, enum cdns3_roles role) -{ - int ret; - - if (WARN_ON(role >= CDNS3_ROLE_END)) - return 0; - - if (!cdns->roles[role]) - return -ENXIO; - - if (cdns->roles[role]->state == CDNS3_ROLE_STATE_ACTIVE) - return 0; - - mutex_lock(&cdns->mutex); - cdns->role = role; - ret = cdns->roles[role]->start(cdns); - if (!ret) - cdns->roles[role]->state = CDNS3_ROLE_STATE_ACTIVE; - mutex_unlock(&cdns->mutex); - return ret; -} - -void cdns3_role_stop(struct cdns3 *cdns) -{ - enum cdns3_roles role = cdns->role; - - if (role >= CDNS3_ROLE_END) { - WARN_ON(role > CDNS3_ROLE_END); - return; - } - - if (cdns->roles[role]->state == CDNS3_ROLE_STATE_INACTIVE) - return; - - mutex_lock(&cdns->mutex); - cdns->roles[role]->stop(cdns); - cdns->roles[role]->state = CDNS3_ROLE_STATE_INACTIVE; - mutex_unlock(&cdns->mutex); -} - -static void cdns3_exit_roles(struct cdns3 *cdns) -{ - cdns3_role_stop(cdns); - cdns3_drd_exit(cdns); -} - -enum cdns3_roles cdsn3_get_real_role(struct cdns3 *cdns); - -static int cdns3_idle_role_start(struct cdns3 *cnds) -{ /* Hold PHY in RESET */ - return 0; -} - -static void cdns3_idle_role_stop(struct cdns3 *cnds) -{ - /* Program Lane swap and bring PHY out of RESET */ -} - -static int cdns3_idle_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_idle_role_start; - rdrv->stop = cdns3_idle_role_stop; - rdrv->state = CDNS3_ROLE_STATE_INACTIVE; - rdrv->suspend = NULL; - rdrv->resume = NULL; - rdrv->name = "idle"; - - cdns->roles[CDNS3_ROLE_IDLE] = rdrv; - - return 0; -} - -/** - * cdns3_core_init_role - initialize role of operation - * @cdns: Pointer to cdns3 structure - * - * Returns 0 on success otherwise negative errno - */ -static int cdns3_core_init_role(struct cdns3 *cdns) -{ - struct device *dev = cdns->dev; - enum usb_dr_mode best_dr_mode; - enum usb_dr_mode dr_mode; - int ret = 0; - - dr_mode = usb_get_dr_mode(dev); - cdns->role = CDNS3_ROLE_END; - - /* - * If driver can't read mode by means of usb_get_dr_mode function then - * chooses mode according with Kernel configuration. This setting - * can be restricted later depending on strap pin configuration. - */ - if (dr_mode == USB_DR_MODE_UNKNOWN) { - if (IS_ENABLED(CONFIG_USB_CDNS3_HOST) && - IS_ENABLED(CONFIG_USB_CDNS3_GADGET)) - dr_mode = USB_DR_MODE_OTG; - else if (IS_ENABLED(CONFIG_USB_CDNS3_HOST)) - dr_mode = USB_DR_MODE_HOST; - else if (IS_ENABLED(CONFIG_USB_CDNS3_GADGET)) - dr_mode = USB_DR_MODE_PERIPHERAL; - } - - /* - * At this point cdns->dr_mode contains strap configuration. - * Driver try update this setting considering kernel configuration - */ - best_dr_mode = cdns->dr_mode; - - ret = cdns3_idle_init(cdns); - if (ret) - return ret; - - if (dr_mode == USB_DR_MODE_OTG) { - best_dr_mode = cdns->dr_mode; - } else if (cdns->dr_mode == USB_DR_MODE_OTG) { - best_dr_mode = dr_mode; - } else if (cdns->dr_mode != dr_mode) { - dev_err(dev, "Incorrect DRD configuration\n"); - return -EINVAL; - } - - dr_mode = best_dr_mode; - - if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_HOST) { - ret = cdns3_host_init(cdns); - if (ret) { - dev_err(dev, "Host initialization failed with %d\n", - ret); - goto err; - } - } - - if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) { - ret = cdns3_gadget_init(cdns); - 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"); diff --git a/drivers/usb/cdns3/core.h b/drivers/usb/cdns3/core.h deleted file mode 100644 index be95696ab17e..000000000000 --- a/drivers/usb/cdns3/core.h +++ /dev/null @@ -1,121 +0,0 @@ -/* 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 */ diff --git a/drivers/usb/cdns3/debug.h b/drivers/usb/cdns3/debug.h deleted file mode 100644 index 65c3d8a6cd62..000000000000 --- a/drivers/usb/cdns3/debug.h +++ /dev/null @@ -1,173 +0,0 @@ -/* 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*/ diff --git a/drivers/usb/cdns3/debugfs.c b/drivers/usb/cdns3/debugfs.c deleted file mode 100644 index 44ee78a10eb8..000000000000 --- a/drivers/usb/cdns3/debugfs.c +++ /dev/null @@ -1,153 +0,0 @@ -// 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); -} diff --git a/drivers/usb/cdns3/drd.c b/drivers/usb/cdns3/drd.c deleted file mode 100644 index b06929fe1175..000000000000 --- a/drivers/usb/cdns3/drd.c +++ /dev/null @@ -1,379 +0,0 @@ -// 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; -} diff --git a/drivers/usb/cdns3/drd.h b/drivers/usb/cdns3/drd.h deleted file mode 100644 index bf6c7bc41b58..000000000000 --- a/drivers/usb/cdns3/drd.h +++ /dev/null @@ -1,166 +0,0 @@ -/* 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 */ diff --git a/drivers/usb/cdns3/ep0.c b/drivers/usb/cdns3/ep0.c deleted file mode 100644 index 6fa711ead6d0..000000000000 --- a/drivers/usb/cdns3/ep0.c +++ /dev/null @@ -1,920 +0,0 @@ -// 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); -} diff --git a/drivers/usb/cdns3/gadget-export.h b/drivers/usb/cdns3/gadget-export.h deleted file mode 100644 index 577469eee961..000000000000 --- a/drivers/usb/cdns3/gadget-export.h +++ /dev/null @@ -1,28 +0,0 @@ -/* 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 */ diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c deleted file mode 100644 index 4e9e8e43f634..000000000000 --- a/drivers/usb/cdns3/gadget.c +++ /dev/null @@ -1,2319 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Cadence USBSS DRD Driver - gadget side. - * - * Copyright (C) 2018-2019 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> - */ - -/* - * Work around 1: - * At some situations, the controller may get stale data address in TRB - * at below sequences: - * 1. Controller read TRB includes data address - * 2. Software updates TRBs includes data address and Cycle bit - * 3. Controller read TRB which includes Cycle bit - * 4. DMA run with stale data address - * - * To fix this problem, driver needs to make the first TRB in TD as invalid. - * After preparing all TRBs driver needs to check the position of DMA and - * if the DMA point to the first just added TRB and doorbell is 1, - * then driver must defer making this TRB as valid. This TRB will be make - * as valid during adding next TRB only if DMA is stopped or at TRBERR - * interrupt. - * - * Issue has been fixed in DEV_VER_V3 version of controller. - * - */ - -#include <linux/dma-mapping.h> -#include <linux/usb/gadget.h> -#include <linux/module.h> - -#include "core.h" -#include "gadget-export.h" -#include "gadget.h" -#include "trace.h" -#include "drd.h" - -static int __cdns3_gadget_ep_queue(struct usb_ep *ep, - struct usb_request *request, - gfp_t gfp_flags); - -/** - * cdns3_set_register_bit - set bit in given register. - * @ptr: address of device controller register to be read and changed - * @mask: bits requested to set - */ -void cdns3_set_register_bit(void __iomem *ptr, u32 mask) -{ - mask = readl(ptr) | mask; - writel(mask, ptr); -} - -/** - * cdns3_ep_addr_to_index - Macro converts endpoint address to - * index of endpoint object in cdns3_device.eps[] container - * @ep_addr: endpoint address for which endpoint object is required - * - */ -u8 cdns3_ep_addr_to_index(u8 ep_addr) -{ - return (((ep_addr & 0x7F)) + ((ep_addr & USB_DIR_IN) ? 16 : 0)); -} - -static int cdns3_get_dma_pos(struct cdns3_device *priv_dev, - struct cdns3_endpoint *priv_ep) -{ - int dma_index; - - dma_index = readl(&priv_dev->regs->ep_traddr) - priv_ep->trb_pool_dma; - - return dma_index / TRB_SIZE; -} - -/** - * cdns3_next_request - returns next request from list - * @list: list containing requests - * - * Returns request or NULL if no requests in list - */ -struct usb_request *cdns3_next_request(struct list_head *list) -{ - return list_first_entry_or_null(list, struct usb_request, list); -} - -/** - * cdns3_next_align_buf - returns next buffer from list - * @list: list containing buffers - * - * Returns buffer or NULL if no buffers in list - */ -struct cdns3_aligned_buf *cdns3_next_align_buf(struct list_head *list) -{ - return list_first_entry_or_null(list, struct cdns3_aligned_buf, list); -} - -/** - * select_ep - selects endpoint - * @priv_dev: extended gadget object - * @ep: endpoint address - */ -void cdns3_select_ep(struct cdns3_device *priv_dev, u32 ep) -{ - if (priv_dev->selected_ep == ep) - return; - - priv_dev->selected_ep = ep; - writel(ep, &priv_dev->regs->ep_sel); -} - -dma_addr_t cdns3_trb_virt_to_dma(struct cdns3_endpoint *priv_ep, - struct cdns3_trb *trb) -{ - u32 offset = (char *)trb - (char *)priv_ep->trb_pool; - - return priv_ep->trb_pool_dma + offset; -} - -int cdns3_ring_size(struct cdns3_endpoint *priv_ep) -{ - switch (priv_ep->type) { - case USB_ENDPOINT_XFER_ISOC: - return TRB_ISO_RING_SIZE; - case USB_ENDPOINT_XFER_CONTROL: - return TRB_CTRL_RING_SIZE; - default: - return TRB_RING_SIZE; - } -} - -/** - * cdns3_allocate_trb_pool - Allocates TRB's pool for selected endpoint - * @priv_ep: endpoint object - * - * Function will return 0 on success or -ENOMEM on allocation error - */ -int cdns3_allocate_trb_pool(struct cdns3_endpoint *priv_ep) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - int ring_size = cdns3_ring_size(priv_ep); - struct cdns3_trb *link_trb; - - if (!priv_ep->trb_pool) { - priv_ep->trb_pool = dma_alloc_coherent(priv_dev->sysdev, - ring_size, - &priv_ep->trb_pool_dma, - GFP_DMA32 | GFP_ATOMIC); - if (!priv_ep->trb_pool) - return -ENOMEM; - } else { - memset(priv_ep->trb_pool, 0, ring_size); - } - - if (!priv_ep->num) - return 0; - - priv_ep->num_trbs = ring_size / TRB_SIZE; - /* Initialize the last TRB as Link TRB */ - link_trb = (priv_ep->trb_pool + (priv_ep->num_trbs - 1)); - link_trb->buffer = TRB_BUFFER(priv_ep->trb_pool_dma); - link_trb->control = TRB_CYCLE | TRB_TYPE(TRB_LINK) | TRB_TOGGLE; - - return 0; -} - -static void cdns3_free_trb_pool(struct cdns3_endpoint *priv_ep) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - - if (priv_ep->trb_pool) { - dma_free_coherent(priv_dev->sysdev, - cdns3_ring_size(priv_ep), - priv_ep->trb_pool, priv_ep->trb_pool_dma); - priv_ep->trb_pool = NULL; - } -} - -/** - * cdns3_ep_stall_flush - Stalls and flushes selected endpoint - * @priv_ep: endpoint object - * - * Endpoint must be selected before call to this function - */ -static void cdns3_ep_stall_flush(struct cdns3_endpoint *priv_ep) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - - cdns3_dbg(priv_ep->cdns3_dev, "Stall & flush endpoint %s\n", - priv_ep->name); - - writel(EP_CMD_DFLUSH | EP_CMD_ERDY | EP_CMD_SSTALL, - &priv_dev->regs->ep_cmd); - - /* wait for DFLUSH cleared */ - cdns3_handshake(&priv_dev->regs->ep_cmd, EP_CMD_DFLUSH, 0, 1000); - priv_ep->flags |= EP_STALL; -} - -/** - * cdns3_hw_reset_eps_config - reset endpoints configuration kept by controller. - * @priv_dev: extended gadget object - */ -void cdns3_hw_reset_eps_config(struct cdns3_device *priv_dev) -{ - writel(USB_CONF_CFGRST, &priv_dev->regs->usb_conf); - - cdns3_allow_enable_l1(priv_dev, 0); - priv_dev->hw_configured_flag = 0; - priv_dev->onchip_used_size = 0; - priv_dev->out_mem_is_allocated = 0; - priv_dev->wait_for_setup = 0; -} - -/** - * cdns3_ep_inc_trb - increment a trb index. - * @index: Pointer to the TRB index to increment. - * @cs: Cycle state - * @trb_in_seg: number of TRBs in segment - * - * The index should never point to the link TRB. After incrementing, - * if it is point to the link TRB, wrap around to the beginning and revert - * cycle state bit The - * link TRB is always at the last TRB entry. - */ -static void cdns3_ep_inc_trb(int *index, u8 *cs, int trb_in_seg) -{ - (*index)++; - if (*index == (trb_in_seg - 1)) { - *index = 0; - *cs ^= 1; - } -} - -/** - * cdns3_ep_inc_enq - increment endpoint's enqueue pointer - * @priv_ep: The endpoint whose enqueue pointer we're incrementing - */ -static void cdns3_ep_inc_enq(struct cdns3_endpoint *priv_ep) -{ - priv_ep->free_trbs--; - cdns3_ep_inc_trb(&priv_ep->enqueue, &priv_ep->pcs, priv_ep->num_trbs); -} - -/** - * cdns3_ep_inc_deq - increment endpoint's dequeue pointer - * @priv_ep: The endpoint whose dequeue pointer we're incrementing - */ -static void cdns3_ep_inc_deq(struct cdns3_endpoint *priv_ep) -{ - priv_ep->free_trbs++; - cdns3_ep_inc_trb(&priv_ep->dequeue, &priv_ep->ccs, priv_ep->num_trbs); -} - -void cdns3_move_deq_to_next_trb(struct cdns3_request *priv_req) -{ - struct cdns3_endpoint *priv_ep = priv_req->priv_ep; - int current_trb = priv_req->start_trb; - - while (current_trb != priv_req->end_trb) { - cdns3_ep_inc_deq(priv_ep); - current_trb = priv_ep->dequeue; - } - - cdns3_ep_inc_deq(priv_ep); -} - -/** - * cdns3_allow_enable_l1 - enable/disable permits to transition to L1. - * @priv_dev: Extended gadget object - * @enable: Enable/disable permit to transition to L1. - * - * If bit USB_CONF_L1EN is set and device receive Extended Token packet, - * then controller answer with ACK handshake. - * If bit USB_CONF_L1DS is set and device receive Extended Token packet, - * then controller answer with NYET handshake. - */ -void cdns3_allow_enable_l1(struct cdns3_device *priv_dev, int enable) -{ - if (enable) - writel(USB_CONF_L1EN, &priv_dev->regs->usb_conf); - else - writel(USB_CONF_L1DS, &priv_dev->regs->usb_conf); -} - -enum usb_device_speed cdns3_get_speed(struct cdns3_device *priv_dev) -{ - u32 reg; - - reg = readl(&priv_dev->regs->usb_sts); - - if (DEV_SUPERSPEED(reg)) - return USB_SPEED_SUPER; - else if (DEV_HIGHSPEED(reg)) - return USB_SPEED_HIGH; - else if (DEV_FULLSPEED(reg)) - return USB_SPEED_FULL; - else if (DEV_LOWSPEED(reg)) - return USB_SPEED_LOW; - return USB_SPEED_UNKNOWN; -} - -/** - * cdns3_start_all_request - add to ring all request not started - * @priv_dev: Extended gadget object - * @priv_ep: The endpoint for whom request will be started. - * - * Returns return ENOMEM if transfer ring i not enough TRBs to start - * all requests. - */ -static int cdns3_start_all_request(struct cdns3_device *priv_dev, - struct cdns3_endpoint *priv_ep) -{ - struct cdns3_request *priv_req; - struct usb_request *request; - int ret = 0; - - while (!list_empty(&priv_ep->deferred_req_list)) { - request = cdns3_next_request(&priv_ep->deferred_req_list); - priv_req = to_cdns3_request(request); - - ret = cdns3_ep_run_transfer(priv_ep, request); - if (ret) - return ret; - - list_del(&request->list); - list_add_tail(&request->list, - &priv_ep->pending_req_list); - } - - priv_ep->flags &= ~EP_RING_FULL; - return ret; -} - -/** - * cdns3_gadget_giveback - call struct usb_request's ->complete callback - * @priv_ep: The endpoint to whom the request belongs to - * @priv_req: The request we're giving back - * @status: completion code for the request - * - * Must be called with controller's lock held and interrupts disabled. This - * function will unmap @req and call its ->complete() callback to notify upper - * layers that it has completed. - */ -void cdns3_gadget_giveback(struct cdns3_endpoint *priv_ep, - struct cdns3_request *priv_req, - int status) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - struct usb_request *request = &priv_req->request; - - list_del_init(&request->list); - - if (request->status == -EINPROGRESS) - request->status = status; - - usb_gadget_unmap_request_by_dev(priv_dev->sysdev, request, - priv_ep->dir); - - if ((priv_req->flags & REQUEST_UNALIGNED) && - priv_ep->dir == USB_DIR_OUT && !request->status) - memcpy(request->buf, priv_req->aligned_buf->buf, - request->length); - - priv_req->flags &= ~(REQUEST_PENDING | REQUEST_UNALIGNED); - trace_cdns3_gadget_giveback(priv_req); - - if (request->complete) { - spin_unlock(&priv_dev->lock); - usb_gadget_giveback_request(&priv_ep->endpoint, - request); - spin_lock(&priv_dev->lock); - } - - if (request->buf == priv_dev->zlp_buf) - cdns3_gadget_ep_free_request(&priv_ep->endpoint, request); -} - -void cdns3_wa1_restore_cycle_bit(struct cdns3_endpoint *priv_ep) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - - /* Work around for stale data address in TRB*/ - if (priv_ep->wa1_set) { - cdns3_dbg(priv_dev, "WA1: update cycle bit\n"); - priv_ep->wa1_set = 0; - priv_ep->wa1_trb_index = 0xFFFF; - if (priv_ep->wa1_cycle_bit) { - priv_ep->wa1_trb->control = - priv_ep->wa1_trb->control | 0x1; - } else { - priv_ep->wa1_trb->control = - priv_ep->wa1_trb->control & ~0x1; - } - } -} - -static int cdns3_prepare_aligned_request_buf(struct cdns3_request *priv_req) -{ - struct cdns3_endpoint *priv_ep = priv_req->priv_ep; - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - struct cdns3_aligned_buf *buf; - - /* check if buffer is aligned to 8. */ - if (!((uintptr_t)priv_req->request.buf & 0x7)) - return 0; - - buf = priv_req->aligned_buf; - - if (!buf || priv_req->request.length > buf->size) { - buf = kzalloc(sizeof(*buf), GFP_ATOMIC); - if (!buf) - return -ENOMEM; - - buf->size = priv_req->request.length; - - buf->buf = dma_alloc_coherent(priv_dev->sysdev, - buf->size, - &buf->dma, - GFP_ATOMIC); - if (!buf->buf) { - kfree(buf); - return -ENOMEM; - } - - if (priv_req->aligned_buf) { - trace_cdns3_free_aligned_request(priv_req); - priv_req->aligned_buf->in_use = 0; - priv_dev->run_garbage_colector = 1; - } - - buf->in_use = 1; - priv_req->aligned_buf = buf; - - list_add_tail(&buf->list, - &priv_dev->aligned_buf_list); - } - - if (priv_ep->dir == USB_DIR_IN) { - memcpy(buf->buf, priv_req->request.buf, - priv_req->request.length); - } - - priv_req->flags |= REQUEST_UNALIGNED; - trace_cdns3_prepare_aligned_request(priv_req); - - return 0; -} - -static int cdns3_wa1_update_guard(struct cdns3_endpoint *priv_ep, - struct cdns3_trb *trb) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - - if (!priv_ep->wa1_set) { - u32 doorbell; - - doorbell = !!(readl(&priv_dev->regs->ep_cmd) & EP_CMD_DRDY); - - if (doorbell) { - priv_ep->wa1_cycle_bit = priv_ep->pcs ? TRB_CYCLE : 0; - priv_ep->wa1_set = 1; - priv_ep->wa1_trb = trb; - priv_ep->wa1_trb_index = priv_ep->enqueue; - cdns3_dbg(priv_dev, "WA1 set guard\n"); - return 0; - } - } - return 1; -} - -static void cdns3_wa1_tray_restore_cycle_bit(struct cdns3_device *priv_dev, - struct cdns3_endpoint *priv_ep) -{ - int dma_index; - u32 doorbell; - - doorbell = !!(readl(&priv_dev->regs->ep_cmd) & EP_CMD_DRDY); - dma_index = cdns3_get_dma_pos(priv_dev, priv_ep); - - if (!doorbell || dma_index != priv_ep->wa1_trb_index) - cdns3_wa1_restore_cycle_bit(priv_ep); -} - -/** - * cdns3_ep_run_transfer - start transfer on no-default endpoint hardware - * @priv_ep: endpoint object - * - * Returns zero on success or negative value on failure - */ -int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, - struct usb_request *request) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - struct cdns3_request *priv_req; - struct cdns3_trb *trb; - dma_addr_t trb_dma; - u32 togle_pcs = 1; - int sg_iter = 0; - int num_trb; - int address; - u32 control; - int pcs; - - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC) - num_trb = priv_ep->interval; - else - num_trb = request->num_sgs ? request->num_sgs : 1; - - if (num_trb > priv_ep->free_trbs) { - priv_ep->flags |= EP_RING_FULL; - return -ENOBUFS; - } - - priv_req = to_cdns3_request(request); - address = priv_ep->endpoint.desc->bEndpointAddress; - - priv_ep->flags |= EP_PENDING_REQUEST; - - /* must allocate buffer aligned to 8 */ - if (priv_req->flags & REQUEST_UNALIGNED) - trb_dma = priv_req->aligned_buf->dma; - else - trb_dma = request->dma; - - trb = priv_ep->trb_pool + priv_ep->enqueue; - priv_req->start_trb = priv_ep->enqueue; - priv_req->trb = trb; - - cdns3_select_ep(priv_ep->cdns3_dev, address); - - /* prepare ring */ - if ((priv_ep->enqueue + num_trb) >= (priv_ep->num_trbs - 1)) { - struct cdns3_trb *link_trb; - int doorbell, dma_index; - u32 ch_bit = 0; - - doorbell = !!(readl(&priv_dev->regs->ep_cmd) & EP_CMD_DRDY); - dma_index = cdns3_get_dma_pos(priv_dev, priv_ep); - - /* Driver can't update LINK TRB if it is current processed. */ - if (doorbell && dma_index == priv_ep->num_trbs - 1) { - priv_ep->flags |= EP_DEFERRED_DRDY; - return -ENOBUFS; - } - - /*updating C bt in Link TRB before starting DMA*/ - link_trb = priv_ep->trb_pool + (priv_ep->num_trbs - 1); - /* - * For TRs size equal 2 enabling TRB_CHAIN for epXin causes - * that DMA stuck at the LINK TRB. - * On the other hand, removing TRB_CHAIN for longer TRs for - * epXout cause that DMA stuck after handling LINK TRB. - * To eliminate this strange behavioral driver set TRB_CHAIN - * bit only for TR size > 2. - */ - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC || - TRBS_PER_SEGMENT > 2) - ch_bit = TRB_CHAIN; - - link_trb->control = ((priv_ep->pcs) ? TRB_CYCLE : 0) | - TRB_TYPE(TRB_LINK) | TRB_TOGGLE | ch_bit; - } - - if (priv_dev->dev_ver <= DEV_VER_V2) - togle_pcs = cdns3_wa1_update_guard(priv_ep, trb); - - /* set incorrect Cycle Bit for first trb*/ - control = priv_ep->pcs ? 0 : TRB_CYCLE; - - do { - u32 length; - u16 td_size = 0; - - /* fill TRB */ - control |= TRB_TYPE(TRB_NORMAL); - trb->buffer = TRB_BUFFER(request->num_sgs == 0 - ? trb_dma : request->sg[sg_iter].dma_address); - - if (likely(!request->num_sgs)) - length = request->length; - else - length = request->sg[sg_iter].length; - - if (likely(priv_dev->dev_ver >= DEV_VER_V2)) - td_size = DIV_ROUND_UP(length, - priv_ep->endpoint.maxpacket); - - trb->length = TRB_BURST_LEN(priv_ep->trb_burst_size) | - TRB_LEN(length); - if (priv_dev->gadget.speed == USB_SPEED_SUPER) - trb->length |= TRB_TDL_SS_SIZE(td_size); - else - control |= TRB_TDL_HS_SIZE(td_size); - - pcs = priv_ep->pcs ? TRB_CYCLE : 0; - - /* - * first trb should be prepared as last to avoid processing - * transfer to early - */ - if (sg_iter != 0) - control |= pcs; - - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && !priv_ep->dir) { - control |= TRB_IOC | TRB_ISP; - } else { - /* for last element in TD or in SG list */ - if (sg_iter == (num_trb - 1) && sg_iter != 0) - control |= pcs | TRB_IOC | TRB_ISP; - } - - if (sg_iter) - trb->control = control; - else - priv_req->trb->control = control; - - control = 0; - ++sg_iter; - priv_req->end_trb = priv_ep->enqueue; - cdns3_ep_inc_enq(priv_ep); - trb = priv_ep->trb_pool + priv_ep->enqueue; - } while (sg_iter < num_trb); - - trb = priv_req->trb; - - priv_req->flags |= REQUEST_PENDING; - - if (sg_iter == 1) - trb->control |= TRB_IOC | TRB_ISP; - /* - * Memory barrier - cycle bit must be set before other filds in trb. - */ - wmb(); - - /* give the TD to the consumer*/ - if (togle_pcs) - trb->control = trb->control ^ 1; - - if (priv_dev->dev_ver <= DEV_VER_V2) - cdns3_wa1_tray_restore_cycle_bit(priv_dev, priv_ep); - - trace_cdns3_prepare_trb(priv_ep, priv_req->trb); - - /* - * Memory barrier - Cycle Bit must be set before trb->length and - * trb->buffer fields. - */ - wmb(); - - /* - * For DMULT mode we can set address to transfer ring only once after - * enabling endpoint. - */ - if (priv_ep->flags & EP_UPDATE_EP_TRBADDR) { - /* - * Until SW is not ready to handle the OUT transfer the ISO OUT - * Endpoint should be disabled (EP_CFG.ENABLE = 0). - * EP_CFG_ENABLE must be set before updating ep_traddr. - */ - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && !priv_ep->dir && - !(priv_ep->flags & EP_QUIRK_ISO_OUT_EN)) { - priv_ep->flags |= EP_QUIRK_ISO_OUT_EN; - cdns3_set_register_bit(&priv_dev->regs->ep_cfg, - EP_CFG_ENABLE); - } - - writel(EP_TRADDR_TRADDR(priv_ep->trb_pool_dma + - priv_req->start_trb * TRB_SIZE), - &priv_dev->regs->ep_traddr); - - cdns3_dbg(priv_ep->cdns3_dev, "Update ep_trbaddr for %s to %08x\n", - priv_ep->name, readl(&priv_dev->regs->ep_traddr)); - - priv_ep->flags &= ~EP_UPDATE_EP_TRBADDR; - } - - if (!priv_ep->wa1_set && !(priv_ep->flags & EP_STALL)) { - trace_cdns3_ring(priv_ep); - /*clearing TRBERR and EP_STS_DESCMIS before seting DRDY*/ - writel(EP_STS_TRBERR | EP_STS_DESCMIS, &priv_dev->regs->ep_sts); - writel(EP_CMD_DRDY, &priv_dev->regs->ep_cmd); - trace_cdns3_doorbell_epx(priv_ep->name, - readl(&priv_dev->regs->ep_traddr)); - } - - /* WORKAROUND for transition to L0 */ - __cdns3_gadget_wakeup(priv_dev); - - return 0; -} - -void cdns3_set_hw_configuration(struct cdns3_device *priv_dev) -{ - struct cdns3_endpoint *priv_ep; - struct usb_ep *ep; - int result = 0; - - if (priv_dev->hw_configured_flag) - return; - - writel(USB_CONF_CFGSET, &priv_dev->regs->usb_conf); - writel(EP_CMD_ERDY | EP_CMD_REQ_CMPL, &priv_dev->regs->ep_cmd); - - cdns3_set_register_bit(&priv_dev->regs->usb_conf, - USB_CONF_U1EN | USB_CONF_U2EN); - - /* wait until configuration set */ - result = cdns3_handshake(&priv_dev->regs->usb_sts, - USB_STS_CFGSTS_MASK, 1, 100); - - priv_dev->hw_configured_flag = 1; - - list_for_each_entry(ep, &priv_dev->gadget.ep_list, ep_list) { - if (ep->enabled) { - priv_ep = ep_to_cdns3_ep(ep); - cdns3_start_all_request(priv_dev, priv_ep); - } - } -} - -/** - * cdns3_request_handled - check whether request has been handled by DMA - * - * @priv_ep: extended endpoint object. - * @priv_req: request object for checking - * - * Endpoint must be selected before invoking this function. - * - * Returns false if request has not been handled by DMA, else returns true. - * - * SR - start ring - * ER - end ring - * DQ = priv_ep->dequeue - dequeue position - * EQ = priv_ep->enqueue - enqueue position - * ST = priv_req->start_trb - index of first TRB in transfer ring - * ET = priv_req->end_trb - index of last TRB in transfer ring - * CI = current_index - index of processed TRB by DMA. - * - * As first step, function checks if cycle bit for priv_req->start_trb is - * correct. - * - * some rules: - * 1. priv_ep->dequeue never exceed current_index. - * 2 priv_ep->enqueue never exceed priv_ep->dequeue - * 3. exception: priv_ep->enqueue == priv_ep->dequeue - * and priv_ep->free_trbs is zero. - * This case indicate that TR is full. - * - * Then We can split recognition into two parts: - * Case 1 - priv_ep->dequeue < current_index - * SR ... EQ ... DQ ... CI ... ER - * SR ... DQ ... CI ... EQ ... ER - * - * Request has been handled by DMA if ST and ET is between DQ and CI. - * - * Case 2 - priv_ep->dequeue > current_index - * This situation take place when CI go through the LINK TRB at the end of - * transfer ring. - * SR ... CI ... EQ ... DQ ... ER - * - * Request has been handled by DMA if ET is less then CI or - * ET is greater or equal DQ. - */ -static bool cdns3_request_handled(struct cdns3_endpoint *priv_ep, - struct cdns3_request *priv_req) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - struct cdns3_trb *trb = priv_req->trb; - int current_index = 0; - int handled = 0; - int doorbell; - - current_index = cdns3_get_dma_pos(priv_dev, priv_ep); - doorbell = !!(readl(&priv_dev->regs->ep_cmd) & EP_CMD_DRDY); - - trb = &priv_ep->trb_pool[priv_req->start_trb]; - - if ((trb->control & TRB_CYCLE) != priv_ep->ccs) - goto finish; - - if (doorbell == 1 && current_index == priv_ep->dequeue) - goto finish; - - /* The corner case for TRBS_PER_SEGMENT equal 2). */ - if (TRBS_PER_SEGMENT == 2 && priv_ep->type != USB_ENDPOINT_XFER_ISOC) { - handled = 1; - goto finish; - } - - if (priv_ep->enqueue == priv_ep->dequeue && - priv_ep->free_trbs == 0) { - handled = 1; - } else if (priv_ep->dequeue < current_index) { - if ((current_index == (priv_ep->num_trbs - 1)) && - !priv_ep->dequeue) - goto finish; - - if (priv_req->end_trb >= priv_ep->dequeue && - priv_req->end_trb < current_index) - handled = 1; - } else if (priv_ep->dequeue > current_index) { - if (priv_req->end_trb < current_index || - priv_req->end_trb >= priv_ep->dequeue) - handled = 1; - } - -finish: - trace_cdns3_request_handled(priv_req, current_index, handled); - - return handled; -} - -static void cdns3_transfer_completed(struct cdns3_device *priv_dev, - struct cdns3_endpoint *priv_ep) -{ - struct cdns3_request *priv_req; - struct usb_request *request; - struct cdns3_trb *trb; - - while (!list_empty(&priv_ep->pending_req_list)) { - request = cdns3_next_request(&priv_ep->pending_req_list); - priv_req = to_cdns3_request(request); - - /* Re-select endpoint. It could be changed by other CPU during - * handling usb_gadget_giveback_request. - */ - cdns3_select_ep(priv_dev, priv_ep->endpoint.address); - - if (!cdns3_request_handled(priv_ep, priv_req)) - goto prepare_next_td; - - trb = priv_ep->trb_pool + priv_ep->dequeue; - trace_cdns3_complete_trb(priv_ep, trb); - - if (trb != priv_req->trb) - dev_warn(priv_dev->dev, - "request_trb=0x%p, queue_trb=0x%p\n", - priv_req->trb, trb); - - request->actual = TRB_LEN(le32_to_cpu(trb->length)); - cdns3_move_deq_to_next_trb(priv_req); - cdns3_gadget_giveback(priv_ep, priv_req, 0); - - if (priv_ep->type != USB_ENDPOINT_XFER_ISOC && - TRBS_PER_SEGMENT == 2) - break; - } - priv_ep->flags &= ~EP_PENDING_REQUEST; - -prepare_next_td: - cdns3_start_all_request(priv_dev, priv_ep); -} - -void cdns3_rearm_transfer(struct cdns3_endpoint *priv_ep, u8 rearm) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - - cdns3_wa1_restore_cycle_bit(priv_ep); - - if (rearm) { - trace_cdns3_ring(priv_ep); - - /* Cycle Bit must be updated before arming DMA. */ - wmb(); - writel(EP_CMD_DRDY, &priv_dev->regs->ep_cmd); - - __cdns3_gadget_wakeup(priv_dev); - - trace_cdns3_doorbell_epx(priv_ep->name, - readl(&priv_dev->regs->ep_traddr)); - } -} - -/** - * cdns3_check_ep_interrupt_proceed - Processes interrupt related to endpoint - * @priv_ep: endpoint object - * - * Returns 0 - */ -static int cdns3_check_ep_interrupt_proceed(struct cdns3_endpoint *priv_ep) -{ - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - u32 ep_sts_reg; - - cdns3_select_ep(priv_dev, priv_ep->endpoint.address); - - trace_cdns3_epx_irq(priv_dev, priv_ep); - - ep_sts_reg = readl(&priv_dev->regs->ep_sts); - writel(ep_sts_reg, &priv_dev->regs->ep_sts); - - if (ep_sts_reg & EP_STS_TRBERR) { - /* - * For isochronous transfer driver completes request on - * IOC or on TRBERR. IOC appears only when device receive - * OUT data packet. If host disable stream or lost some packet - * then the only way to finish all queued transfer is to do it - * on TRBERR event. - */ - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && - !priv_ep->wa1_set) { - if (!priv_ep->dir) { - u32 ep_cfg = readl(&priv_dev->regs->ep_cfg); - - ep_cfg &= ~EP_CFG_ENABLE; - writel(ep_cfg, &priv_dev->regs->ep_cfg); - priv_ep->flags &= ~EP_QUIRK_ISO_OUT_EN; - } - cdns3_transfer_completed(priv_dev, priv_ep); - } else { - if (priv_ep->flags & EP_DEFERRED_DRDY) { - priv_ep->flags &= ~EP_DEFERRED_DRDY; - cdns3_start_all_request(priv_dev, priv_ep); - } else { - cdns3_rearm_transfer(priv_ep, priv_ep->wa1_set); - } - } - } - - if ((ep_sts_reg & EP_STS_IOC) || (ep_sts_reg & EP_STS_ISP)) - cdns3_transfer_completed(priv_dev, priv_ep); - - return 0; -} - -/** - * cdns3_check_usb_interrupt_proceed - Processes interrupt related to device - * @priv_dev: extended gadget object - * @usb_ists: bitmap representation of device's reported interrupts - * (usb_ists register value) - */ -static void cdns3_check_usb_interrupt_proceed(struct cdns3_device *priv_dev, - u32 usb_ists) -{ - int speed = 0; - - trace_cdns3_usb_irq(priv_dev, usb_ists); - if (usb_ists & USB_ISTS_L1ENTI) { - /* - * WORKAROUND: CDNS3 controller has issue with hardware resuming - * from L1. To fix it, if any DMA transfer is pending driver - * must starts driving resume signal immediately. - */ - if (readl(&priv_dev->regs->drbl)) - __cdns3_gadget_wakeup(priv_dev); - } - - /* Connection detected */ - if (usb_ists & (USB_ISTS_CON2I | USB_ISTS_CONI)) { - speed = cdns3_get_speed(priv_dev); - priv_dev->gadget.speed = speed; - usb_gadget_set_state(&priv_dev->gadget, USB_STATE_POWERED); - cdns3_ep0_config(priv_dev); - } - - /* Disconnection detected */ - if (usb_ists & (USB_ISTS_DIS2I | USB_ISTS_DISI)) { - if (priv_dev->gadget_driver && - priv_dev->gadget_driver->disconnect) { - spin_unlock(&priv_dev->lock); - priv_dev->gadget_driver->disconnect(&priv_dev->gadget); - spin_lock(&priv_dev->lock); - } - - priv_dev->gadget.speed = USB_SPEED_UNKNOWN; - usb_gadget_set_state(&priv_dev->gadget, USB_STATE_NOTATTACHED); - cdns3_hw_reset_eps_config(priv_dev); - } - - if (usb_ists & (USB_ISTS_L2ENTI | USB_ISTS_U3ENTI)) { - if (priv_dev->gadget_driver && - priv_dev->gadget_driver->suspend) { - spin_unlock(&priv_dev->lock); - priv_dev->gadget_driver->suspend(&priv_dev->gadget); - spin_lock(&priv_dev->lock); - } - } - - if (usb_ists & (USB_ISTS_L2EXTI | USB_ISTS_U3EXTI)) { - if (priv_dev->gadget_driver && - priv_dev->gadget_driver->resume) { - spin_unlock(&priv_dev->lock); - priv_dev->gadget_driver->resume(&priv_dev->gadget); - spin_lock(&priv_dev->lock); - } - } - - /* reset*/ - if (usb_ists & (USB_ISTS_UWRESI | USB_ISTS_UHRESI | USB_ISTS_U2RESI)) { - if (priv_dev->gadget_driver) { - spin_unlock(&priv_dev->lock); - usb_gadget_udc_reset(&priv_dev->gadget, - priv_dev->gadget_driver); - spin_lock(&priv_dev->lock); - - /*read again to check the actual speed*/ - speed = cdns3_get_speed(priv_dev); - priv_dev->gadget.speed = speed; - cdns3_hw_reset_eps_config(priv_dev); - cdns3_ep0_config(priv_dev); - } - } -} - -/** - * cdns3_device_irq_handler- interrupt handler for device part of controller - * - * @irq: irq number for cdns3 core device - * @data: structure of cdns3 - * - * Returns IRQ_HANDLED or IRQ_NONE - */ -static irqreturn_t cdns3_device_irq_handler(int irq, void *data) -{ - struct cdns3_device *priv_dev; - struct cdns3 *cdns = data; - irqreturn_t ret = IRQ_NONE; - unsigned long flags; - u32 reg; - - priv_dev = cdns->gadget_dev; - spin_lock_irqsave(&priv_dev->lock, flags); - - /* check USB device interrupt */ - reg = readl(&priv_dev->regs->usb_ists); - - if (reg) { - writel(reg, &priv_dev->regs->usb_ists); - cdns3_check_usb_interrupt_proceed(priv_dev, reg); - ret = IRQ_HANDLED; - } - - /* check endpoint interrupt */ - reg = readl(&priv_dev->regs->ep_ists); - - if (reg) { - priv_dev->shadow_ep_en |= reg; - reg = ~reg & readl(&priv_dev->regs->ep_ien); - /* mask deferred interrupt. */ - writel(reg, &priv_dev->regs->ep_ien); - ret = IRQ_WAKE_THREAD; - } - - spin_unlock_irqrestore(&priv_dev->lock, flags); - return ret; -} - -/** - * cdns3_device_thread_irq_handler- interrupt handler for device part - * of controller - * - * @irq: irq number for cdns3 core device - * @data: structure of cdns3 - * - * Returns IRQ_HANDLED or IRQ_NONE - */ -static irqreturn_t cdns3_device_thread_irq_handler(int irq, void *data) -{ - struct cdns3_device *priv_dev; - struct cdns3 *cdns = data; - irqreturn_t ret = IRQ_NONE; - unsigned long flags; - u32 ep_ien; - int bit; - u32 reg; - - priv_dev = cdns->gadget_dev; - spin_lock_irqsave(&priv_dev->lock, flags); - - reg = readl(&priv_dev->regs->ep_ists); - - /* handle default endpoint OUT */ - if (reg & EP_ISTS_EP_OUT0) { - cdns3_check_ep0_interrupt_proceed(priv_dev, USB_DIR_OUT); - ret = IRQ_HANDLED; - } - - /* handle default endpoint IN */ - if (reg & EP_ISTS_EP_IN0) { - cdns3_check_ep0_interrupt_proceed(priv_dev, USB_DIR_IN); - ret = IRQ_HANDLED; - } - - /* check if interrupt from non default endpoint, if no exit */ - reg &= ~(EP_ISTS_EP_OUT0 | EP_ISTS_EP_IN0); - if (!reg) - goto irqend; - - for_each_set_bit(bit, (unsigned long *)®, - sizeof(u32) * BITS_PER_BYTE) { - priv_dev->shadow_ep_en |= BIT(bit); - cdns3_check_ep_interrupt_proceed(priv_dev->eps[bit]); - ret = IRQ_HANDLED; - } - - if (priv_dev->run_garbage_colector) { - struct cdns3_aligned_buf *buf, *tmp; - - list_for_each_entry_safe(buf, tmp, &priv_dev->aligned_buf_list, - list) { - if (!buf->in_use) { - list_del(&buf->list); - - spin_unlock_irqrestore(&priv_dev->lock, flags); - dma_free_coherent(priv_dev->sysdev, buf->size, - buf->buf, - buf->dma); - spin_lock_irqsave(&priv_dev->lock, flags); - - kfree(buf); - } - } - - priv_dev->run_garbage_colector = 0; - } - -irqend: - ep_ien = readl(&priv_dev->regs->ep_ien) | priv_dev->shadow_ep_en; - priv_dev->shadow_ep_en = 0; - /* Unmask all handled EP interrupts */ - writel(ep_ien, &priv_dev->regs->ep_ien); - spin_unlock_irqrestore(&priv_dev->lock, flags); - return ret; -} - -/** - * cdns3_ep_onchip_buffer_reserve - Try to reserve onchip buf for EP - * - * The real reservation will occur during write to EP_CFG register, - * this function is used to check if the 'size' reservation is allowed. - * - * @priv_dev: extended gadget object - * @size: the size (KB) for EP would like to allocate - * @is_in: endpoint direction - * - * Return 0 if the required size can met or negative value on failure - */ -static int cdns3_ep_onchip_buffer_reserve(struct cdns3_device *priv_dev, - int size, int is_in) -{ - int remained; - - /* 2KB are reserved for EP0*/ - remained = priv_dev->onchip_buffers - priv_dev->onchip_used_size - 2; - - if (is_in) { - if (remained < size) - return -EPERM; - - priv_dev->onchip_used_size += size; - } else { - int required; - - /** - * ALL OUT EPs are shared the same chunk onchip memory, so - * driver checks if it already has assigned enough buffers - */ - if (priv_dev->out_mem_is_allocated >= size) - return 0; - - required = size - priv_dev->out_mem_is_allocated; - - if (required > remained) - return -EPERM; - - priv_dev->out_mem_is_allocated += required; - priv_dev->onchip_used_size += required; - } - - return 0; -} - -void cdns3_configure_dmult(struct cdns3_device *priv_dev, - struct cdns3_endpoint *priv_ep) -{ - struct cdns3_usb_regs __iomem *regs = priv_dev->regs; - - /* For dev_ver > DEV_VER_V2 DMULT is configured per endpoint */ - if (priv_dev->dev_ver <= DEV_VER_V2) - writel(USB_CONF_DMULT, ®s->usb_conf); - - if (priv_dev->dev_ver == DEV_VER_V2) - writel(USB_CONF2_EN_TDL_TRB, ®s->usb_conf2); - - if (priv_dev->dev_ver >= DEV_VER_V3 && priv_ep) { - u32 mask; - - if (priv_ep->dir) - mask = BIT(priv_ep->num + 16); - else - mask = BIT(priv_ep->num); - - if (priv_ep->type != USB_ENDPOINT_XFER_ISOC) { - cdns3_set_register_bit(®s->tdl_from_trb, mask); - cdns3_set_register_bit(®s->tdl_beh, mask); - cdns3_set_register_bit(®s->tdl_beh2, mask); - cdns3_set_register_bit(®s->dma_adv_td, mask); - } - - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && !priv_ep->dir) - cdns3_set_register_bit(®s->tdl_from_trb, mask); - - cdns3_set_register_bit(®s->dtrans, mask); - } -} - -/** - * cdns3_ep_config Configure hardware endpoint - * @priv_ep: extended endpoint object - */ -void cdns3_ep_config(struct cdns3_endpoint *priv_ep) -{ - bool is_iso_ep = (priv_ep->type == USB_ENDPOINT_XFER_ISOC); - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - u32 bEndpointAddress = priv_ep->num | priv_ep->dir; - u32 max_packet_size = 0; - u8 maxburst = 0; - u32 ep_cfg = 0; - u8 buffering; - u8 mult = 0; - int ret; - - buffering = CDNS3_EP_BUF_SIZE - 1; - - cdns3_configure_dmult(priv_dev, priv_ep); - - switch (priv_ep->type) { - case USB_ENDPOINT_XFER_INT: - ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_INT); - - if ((priv_dev->dev_ver == DEV_VER_V2 && !priv_ep->dir) || - priv_dev->dev_ver > DEV_VER_V2) - ep_cfg |= EP_CFG_TDL_CHK; - break; - case USB_ENDPOINT_XFER_BULK: - ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_BULK); - - if ((priv_dev->dev_ver == DEV_VER_V2 && !priv_ep->dir) || - priv_dev->dev_ver > DEV_VER_V2) - ep_cfg |= EP_CFG_TDL_CHK; - break; - default: - ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_ISOC); - mult = CDNS3_EP_ISO_HS_MULT - 1; - buffering = mult + 1; - } - - switch (priv_dev->gadget.speed) { - case USB_SPEED_FULL: - max_packet_size = is_iso_ep ? 1023 : 64; - break; - case USB_SPEED_HIGH: - max_packet_size = is_iso_ep ? 1024 : 512; - break; - case USB_SPEED_SUPER: - /* It's limitation that driver assumes in driver. */ - mult = 0; - max_packet_size = 1024; - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC) { - maxburst = CDNS3_EP_ISO_SS_BURST - 1; - buffering = (mult + 1) * - (maxburst + 1); - - if (priv_ep->interval > 1) - buffering++; - } else { - maxburst = CDNS3_EP_BUF_SIZE - 1; - } - break; - default: - /* all other speed are not supported */ - return; - } - - if (max_packet_size == 1024) - priv_ep->trb_burst_size = 128; - else if (max_packet_size >= 512) - priv_ep->trb_burst_size = 64; - else - priv_ep->trb_burst_size = 16; - - ret = cdns3_ep_onchip_buffer_reserve(priv_dev, buffering + 1, - !!priv_ep->dir); - if (ret) { - dev_err(priv_dev->dev, "onchip mem is full, ep is invalid\n"); - return; - } - - ep_cfg |= EP_CFG_MAXPKTSIZE(max_packet_size) | - EP_CFG_MULT(mult) | - EP_CFG_BUFFERING(buffering) | - EP_CFG_MAXBURST(maxburst); - - cdns3_select_ep(priv_dev, bEndpointAddress); - writel(ep_cfg, &priv_dev->regs->ep_cfg); - - dev_dbg(priv_dev->dev, "Configure %s: with val %08x\n", - priv_ep->name, ep_cfg); -} - -/* Find correct direction for HW endpoint according to description */ -static int cdns3_ep_dir_is_correct(struct usb_endpoint_descriptor *desc, - struct cdns3_endpoint *priv_ep) -{ - return (priv_ep->endpoint.caps.dir_in && usb_endpoint_dir_in(desc)) || - (priv_ep->endpoint.caps.dir_out && usb_endpoint_dir_out(desc)); -} - -static struct -cdns3_endpoint *cdns3_find_available_ep(struct cdns3_device *priv_dev, - struct usb_endpoint_descriptor *desc) -{ - struct usb_ep *ep; - struct cdns3_endpoint *priv_ep; - - list_for_each_entry(ep, &priv_dev->gadget.ep_list, ep_list) { - unsigned long num; - int ret; - /* ep name pattern likes epXin or epXout */ - char c[2] = {ep->name[2], '\0'}; - - ret = kstrtoul(c, 10, &num); - if (ret) - return ERR_PTR(ret); - - priv_ep = ep_to_cdns3_ep(ep); - if (cdns3_ep_dir_is_correct(desc, priv_ep)) { - if (!(priv_ep->flags & EP_CLAIMED)) { - priv_ep->num = num; - return priv_ep; - } - } - } - - return ERR_PTR(-ENOENT); -} - -/* - * Cadence IP has one limitation that all endpoints must be configured - * (Type & MaxPacketSize) before setting configuration through hardware - * register, it means we can't change endpoints configuration after - * set_configuration. - * - * This function set EP_CLAIMED flag which is added when the gadget driver - * uses usb_ep_autoconfig to configure specific endpoint; - * When the udc driver receives set_configurion request, - * it goes through all claimed endpoints, and configure all endpoints - * accordingly. - * - * At usb_ep_ops.enable/disable, we only enable and disable endpoint through - * ep_cfg register which can be changed after set_configuration, and do - * some software operation accordingly. - */ -static struct -usb_ep *cdns3_gadget_match_ep(struct usb_gadget *gadget, - struct usb_endpoint_descriptor *desc, - struct usb_ss_ep_comp_descriptor *comp_desc) -{ - struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget); - struct cdns3_endpoint *priv_ep; - unsigned long flags; - - priv_ep = cdns3_find_available_ep(priv_dev, desc); - if (IS_ERR(priv_ep)) { - dev_err(priv_dev->dev, "no available ep\n"); - return NULL; - } - - dev_dbg(priv_dev->dev, "match endpoint: %s\n", priv_ep->name); - - spin_lock_irqsave(&priv_dev->lock, flags); - priv_ep->endpoint.desc = desc; - priv_ep->dir = usb_endpoint_dir_in(desc) ? USB_DIR_IN : USB_DIR_OUT; - priv_ep->type = usb_endpoint_type(desc); - priv_ep->flags |= EP_CLAIMED; - priv_ep->interval = desc->bInterval ? BIT(desc->bInterval - 1) : 0; - - spin_unlock_irqrestore(&priv_dev->lock, flags); - return &priv_ep->endpoint; -} - -/** - * cdns3_gadget_ep_alloc_request Allocates request - * @ep: endpoint object associated with request - * @gfp_flags: gfp flags - * - * Returns allocated request address, NULL on allocation error - */ -struct usb_request *cdns3_gadget_ep_alloc_request(struct usb_ep *ep, - gfp_t gfp_flags) -{ - struct cdns3_endpoint *priv_ep = ep_to_cdns3_ep(ep); - struct cdns3_request *priv_req; - - priv_req = kzalloc(sizeof(*priv_req), gfp_flags); - if (!priv_req) - return NULL; - - priv_req->priv_ep = priv_ep; - - trace_cdns3_alloc_request(priv_req); - return &priv_req->request; -} - -/** - * cdns3_gadget_ep_free_request Free memory occupied by request - * @ep: endpoint object associated with request - * @request: request to free memory - */ -void cdns3_gadget_ep_free_request(struct usb_ep *ep, - struct usb_request *request) -{ - struct cdns3_request *priv_req = to_cdns3_request(request); - - if (priv_req->aligned_buf) - priv_req->aligned_buf->in_use = 0; - - trace_cdns3_free_request(priv_req); - kfree(priv_req); -} - -/** - * cdns3_gadget_ep_enable Enable endpoint - * @ep: endpoint object - * @desc: endpoint descriptor - * - * Returns 0 on success, error code elsewhere - */ -static int cdns3_gadget_ep_enable(struct usb_ep *ep, - const struct usb_endpoint_descriptor *desc) -{ - struct cdns3_endpoint *priv_ep; - struct cdns3_device *priv_dev; - u32 reg = EP_STS_EN_TRBERREN; - u32 bEndpointAddress; - unsigned long flags; - int enable = 1; - int ret; - - priv_ep = ep_to_cdns3_ep(ep); - priv_dev = priv_ep->cdns3_dev; - - if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) { - dev_dbg(priv_dev->dev, "usbss: invalid parameters\n"); - return -EINVAL; - } - - if (!desc->wMaxPacketSize) { - dev_err(priv_dev->dev, "usbss: missing wMaxPacketSize\n"); - return -EINVAL; - } - - if (dev_WARN_ONCE(priv_dev->dev, priv_ep->flags & EP_ENABLED, - "%s is already enabled\n", priv_ep->name)) - return 0; - - spin_lock_irqsave(&priv_dev->lock, flags); - - priv_ep->endpoint.desc = desc; - priv_ep->type = usb_endpoint_type(desc); - priv_ep->interval = desc->bInterval ? BIT(desc->bInterval - 1) : 0; - - if (priv_ep->interval > ISO_MAX_INTERVAL && - priv_ep->type == USB_ENDPOINT_XFER_ISOC) { - dev_err(priv_dev->dev, "Driver is limited to %d period\n", - ISO_MAX_INTERVAL); - - ret = -EINVAL; - goto exit; - } - - ret = cdns3_allocate_trb_pool(priv_ep); - - if (ret) - goto exit; - - bEndpointAddress = priv_ep->num | priv_ep->dir; - cdns3_select_ep(priv_dev, bEndpointAddress); - - trace_cdns3_gadget_ep_enable(priv_ep); - - writel(EP_CMD_EPRST, &priv_dev->regs->ep_cmd); - - ret = cdns3_handshake(&priv_dev->regs->ep_cmd, - EP_CMD_CSTALL | EP_CMD_EPRST, 0, 1000); - - if (unlikely(ret)) { - cdns3_free_trb_pool(priv_ep); - ret = -EINVAL; - goto exit; - } - - /* enable interrupt for selected endpoint */ - cdns3_set_register_bit(&priv_dev->regs->ep_ien, - BIT(cdns3_ep_addr_to_index(bEndpointAddress))); - - writel(reg, &priv_dev->regs->ep_sts_en); - - /* - * For some versions of controller at some point during ISO OUT traffic - * DMA reads Transfer Ring for the EP which has never got doorbell. - * This issue was detected only on simulation, but to avoid this issue - * driver add protection against it. To fix it driver enable ISO OUT - * endpoint before setting DRBL. This special treatment of ISO OUT - * endpoints are recommended by controller specification. - */ - if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && !priv_ep->dir) - enable = 0; - - if (enable) - cdns3_set_register_bit(&priv_dev->regs->ep_cfg, EP_CFG_ENABLE); - - ep->desc = desc; - priv_ep->flags &= ~(EP_PENDING_REQUEST | EP_STALL | - EP_QUIRK_ISO_OUT_EN); - priv_ep->flags |= EP_ENABLED | EP_UPDATE_EP_TRBADDR; - priv_ep->wa1_set = 0; - priv_ep->enqueue = 0; - priv_ep->dequeue = 0; - reg = readl(&priv_dev->regs->ep_sts); - priv_ep->pcs = !!EP_STS_CCS(reg); - priv_ep->ccs = !!EP_STS_CCS(reg); - /* one TRB is reserved for link TRB used in DMULT mode*/ - priv_ep->free_trbs = priv_ep->num_trbs - 1; -exit: - spin_unlock_irqrestore(&priv_dev->lock, flags); - - return ret; -} - -/** - * cdns3_gadget_ep_disable Disable endpoint - * @ep: endpoint object - * - * Returns 0 on success, error code elsewhere - */ -static int cdns3_gadget_ep_disable(struct usb_ep *ep) -{ - struct cdns3_endpoint *priv_ep; - struct cdns3_device *priv_dev; - struct usb_request *request; - unsigned long flags; - int ret = 0; - u32 ep_cfg; - - if (!ep) { - pr_err("usbss: invalid parameters\n"); - return -EINVAL; - } - - priv_ep = ep_to_cdns3_ep(ep); - priv_dev = priv_ep->cdns3_dev; - - if (dev_WARN_ONCE(priv_dev->dev, !(priv_ep->flags & EP_ENABLED), - "%s is already disabled\n", priv_ep->name)) - return 0; - - spin_lock_irqsave(&priv_dev->lock, flags); - - trace_cdns3_gadget_ep_disable(priv_ep); - - cdns3_select_ep(priv_dev, ep->desc->bEndpointAddress); - - ep_cfg = readl(&priv_dev->regs->ep_cfg); - ep_cfg &= ~EP_CFG_ENABLE; - writel(ep_cfg, &priv_dev->regs->ep_cfg); - - /** - * Driver needs some time before resetting endpoint. - * It need waits for clearing DBUSY bit or for timeout expired. - * 10us is enough time for controller to stop transfer. - */ - cdns3_handshake(&priv_dev->regs->ep_sts, - EP_STS_DBUSY, 0, 10); - - writel(EP_CMD_EPRST, &priv_dev->regs->ep_cmd); - - ret = cdns3_handshake(&priv_dev->regs->ep_cmd, - EP_CMD_CSTALL | EP_CMD_EPRST, 0, 1000); - - if (unlikely(ret)) - dev_err(priv_dev->dev, "Timeout: %s resetting failed.\n", - priv_ep->name); - - while (!list_empty(&priv_ep->pending_req_list)) { - request = cdns3_next_request(&priv_ep->pending_req_list); - - cdns3_gadget_giveback(priv_ep, to_cdns3_request(request), - -ESHUTDOWN); - } - - while (!list_empty(&priv_ep->deferred_req_list)) { - request = cdns3_next_request(&priv_ep->deferred_req_list); - - cdns3_gadget_giveback(priv_ep, to_cdns3_request(request), - -ESHUTDOWN); - } - - ep->desc = NULL; - priv_ep->flags &= ~EP_ENABLED; - - spin_unlock_irqrestore(&priv_dev->lock, flags); - - return ret; -} - -/** - * cdns3_gadget_ep_queue Transfer data on endpoint - * @ep: endpoint object - * @request: request object - * @gfp_flags: gfp flags - * - * Returns 0 on success, error code elsewhere - */ -static int __cdns3_gadget_ep_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; - struct cdns3_request *priv_req; - int ret = 0; - - request->actual = 0; - request->status = -EINPROGRESS; - priv_req = to_cdns3_request(request); - trace_cdns3_ep_queue(priv_req); - - ret = cdns3_prepare_aligned_request_buf(priv_req); - if (ret < 0) - return ret; - - ret = usb_gadget_map_request_by_dev(priv_dev->sysdev, request, - usb_endpoint_dir_in(ep->desc)); - if (ret) - return ret; - - list_add_tail(&request->list, &priv_ep->deferred_req_list); - - /* - * If hardware endpoint configuration has not been set yet then - * just queue request in deferred list. Transfer will be started in - * cdns3_set_hw_configuration. - */ - if (priv_dev->hw_configured_flag) - cdns3_start_all_request(priv_dev, priv_ep); - - return 0; -} - -static int cdns3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, - gfp_t gfp_flags) -{ - struct usb_request *zlp_request; - struct cdns3_endpoint *priv_ep; - struct cdns3_device *priv_dev; - unsigned long flags; - int ret; - - if (!request || !ep) - return -EINVAL; - - priv_ep = ep_to_cdns3_ep(ep); - priv_dev = priv_ep->cdns3_dev; - - spin_lock_irqsave(&priv_dev->lock, flags); - - ret = __cdns3_gadget_ep_queue(ep, request, gfp_flags); - - if (ret == 0 && request->zero && request->length && - (request->length % ep->maxpacket == 0)) { - struct cdns3_request *priv_req; - - zlp_request = cdns3_gadget_ep_alloc_request(ep, GFP_ATOMIC); - zlp_request->buf = priv_dev->zlp_buf; - zlp_request->length = 0; - - priv_req = to_cdns3_request(zlp_request); - priv_req->flags |= REQUEST_ZLP; - - dev_dbg(priv_dev->dev, "Queuing ZLP for endpoint: %s\n", - priv_ep->name); - ret = __cdns3_gadget_ep_queue(ep, zlp_request, gfp_flags); - } - - spin_unlock_irqrestore(&priv_dev->lock, flags); - return ret; -} - -/** - * cdns3_gadget_ep_dequeue Remove request from transfer queue - * @ep: endpoint object associated with request - * @request: request object - * - * Returns 0 on success, error code elsewhere - */ -int cdns3_gadget_ep_dequeue(struct usb_ep *ep, - struct usb_request *request) -{ - struct cdns3_endpoint *priv_ep = ep_to_cdns3_ep(ep); - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - struct usb_request *req, *req_temp; - struct cdns3_request *priv_req; - struct cdns3_trb *link_trb; - unsigned long flags; - int ret = 0; - - if (!ep || !request || !ep->desc) - return -EINVAL; - - spin_lock_irqsave(&priv_dev->lock, flags); - - priv_req = to_cdns3_request(request); - - trace_cdns3_ep_dequeue(priv_req); - - cdns3_select_ep(priv_dev, ep->desc->bEndpointAddress); - - list_for_each_entry_safe(req, req_temp, &priv_ep->pending_req_list, - list) { - if (request == req) - goto found; - } - - list_for_each_entry_safe(req, req_temp, &priv_ep->deferred_req_list, - list) { - if (request == req) - goto found; - } - - goto not_found; - -found: - - if (priv_ep->wa1_trb == priv_req->trb) - cdns3_wa1_restore_cycle_bit(priv_ep); - - link_trb = priv_req->trb; - cdns3_move_deq_to_next_trb(priv_req); - cdns3_gadget_giveback(priv_ep, priv_req, -ECONNRESET); - - /* Update ring */ - request = cdns3_next_request(&priv_ep->deferred_req_list); - if (request) { - priv_req = to_cdns3_request(request); - - link_trb->buffer = TRB_BUFFER(priv_ep->trb_pool_dma + - (priv_req->start_trb * TRB_SIZE)); - link_trb->control = (link_trb->control & TRB_CYCLE) | - TRB_TYPE(TRB_LINK) | TRB_CHAIN | TRB_TOGGLE; - } else { - priv_ep->flags |= EP_UPDATE_EP_TRBADDR; - } - -not_found: - spin_unlock_irqrestore(&priv_dev->lock, flags); - return ret; -} - -/** - * cdns3_gadget_ep_set_halt Sets/clears stall on selected endpoint - * @ep: endpoint object to set/clear stall on - * @value: 1 for set stall, 0 for clear stall - * - * Returns 0 on success, error code elsewhere - */ -int cdns3_gadget_ep_set_halt(struct usb_ep *ep, int value) -{ - struct cdns3_endpoint *priv_ep = ep_to_cdns3_ep(ep); - struct cdns3_device *priv_dev = priv_ep->cdns3_dev; - unsigned long flags; - int ret = 0; - - if (!(priv_ep->flags & EP_ENABLED)) - return -EPERM; - - spin_lock_irqsave(&priv_dev->lock, flags); - - cdns3_select_ep(priv_dev, ep->desc->bEndpointAddress); - if (value) { - cdns3_ep_stall_flush(priv_ep); - } else { - priv_ep->flags &= ~EP_WEDGE; - - 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 (unlikely(ret)) { - dev_err(priv_dev->dev, - "Clearing halt condition failed for %s\n", - priv_ep->name); - goto finish; - - } else { - priv_ep->flags &= ~EP_STALL; - } - } - - priv_ep->flags &= ~EP_PENDING_REQUEST; -finish: - spin_unlock_irqrestore(&priv_dev->lock, flags); - - return ret; -} - -extern const struct usb_ep_ops cdns3_gadget_ep0_ops; - -static const struct usb_ep_ops cdns3_gadget_ep_ops = { - .enable = cdns3_gadget_ep_enable, - .disable = cdns3_gadget_ep_disable, - .alloc_request = cdns3_gadget_ep_alloc_request, - .free_request = cdns3_gadget_ep_free_request, - .queue = cdns3_gadget_ep_queue, - .dequeue = cdns3_gadget_ep_dequeue, - .set_halt = cdns3_gadget_ep_set_halt, - .set_wedge = cdns3_gadget_ep_set_wedge, -}; - -/** - * cdns3_gadget_get_frame Returns number of actual ITP frame - * @gadget: gadget object - * - * Returns number of actual ITP frame - */ -static int cdns3_gadget_get_frame(struct usb_gadget *gadget) -{ - struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget); - - return readl(&priv_dev->regs->usb_itpn); -} - -int __cdns3_gadget_wakeup(struct cdns3_device *priv_dev) -{ - enum usb_device_speed speed; - - speed = cdns3_get_speed(priv_dev); - - if (speed >= USB_SPEED_SUPER) - return 0; - - /* Start driving resume signaling to indicate remote wakeup. */ - writel(USB_CONF_LGO_L0, &priv_dev->regs->usb_conf); - - return 0; -} - -static int cdns3_gadget_wakeup(struct usb_gadget *gadget) -{ - struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget); - unsigned long flags; - int ret = 0; - - spin_lock_irqsave(&priv_dev->lock, flags); - ret = __cdns3_gadget_wakeup(priv_dev); - spin_unlock_irqrestore(&priv_dev->lock, flags); - return ret; -} - -static int cdns3_gadget_set_selfpowered(struct usb_gadget *gadget, - int is_selfpowered) -{ - struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget); - unsigned long flags; - - spin_lock_irqsave(&priv_dev->lock, flags); - priv_dev->is_selfpowered = !!is_selfpowered; - spin_unlock_irqrestore(&priv_dev->lock, flags); - return 0; -} - -static int cdns3_gadget_pullup(struct usb_gadget *gadget, int is_on) -{ - struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget); - - if (is_on) - writel(USB_CONF_DEVEN, &priv_dev->regs->usb_conf); - else - writel(USB_CONF_DEVDS, &priv_dev->regs->usb_conf); - - return 0; -} - -static void cdns3_gadget_config(struct cdns3_device *priv_dev) -{ - struct cdns3_usb_regs __iomem *regs = priv_dev->regs; - u32 reg; - - cdns3_ep0_config(priv_dev); - - /* enable interrupts for endpoint 0 (in and out) */ - writel(EP_IEN_EP_OUT0 | EP_IEN_EP_IN0, ®s->ep_ien); - - /* - *Driver need modify LFPS minimal U1 Exit time for 0x00024505 revision - * of controller - */ - if (priv_dev->dev_ver == DEV_VER_TI_V1) { - reg = readl(®s->dbg_link1); - - reg &= ~DBG_LINK1_LFPS_MIN_GEN_U1_EXIT_MASK; - reg |= DBG_LINK1_LFPS_MIN_GEN_U1_EXIT(0x55) | - DBG_LINK1_LFPS_MIN_GEN_U1_EXIT_SET; - writel(reg, ®s->dbg_link1); - } - - /* - * By default some platforms has set protected access to memory. - * This cause problem with cache, so driver restore non-secure - * access to memory. - */ - reg = readl(®s->dma_axi_ctrl); - reg = DMA_AXI_CTRL_MARPROT(DMA_AXI_CTRL_NON_SECURE) | - DMA_AXI_CTRL_MAWPROT(DMA_AXI_CTRL_NON_SECURE); - writel(reg, ®s->dma_axi_ctrl); - - /* enable generic interrupt*/ - writel(USB_IEN_INIT, ®s->usb_ien); - writel(USB_CONF_CLK2OFFDS | USB_CONF_L1DS, ®s->usb_conf); - - cdns3_configure_dmult(priv_dev, NULL); - - cdns3_gadget_pullup(&priv_dev->gadget, 1); -} - -/** - * cdns3_gadget_udc_start Gadget start - * @gadget: gadget object - * @driver: driver which operates on this gadget - * - * Returns 0 on success, error code elsewhere - */ -static int cdns3_gadget_udc_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget); - unsigned long flags; - - spin_lock_irqsave(&priv_dev->lock, flags); - priv_dev->gadget_driver = driver; - cdns3_gadget_config(priv_dev); - spin_unlock_irqrestore(&priv_dev->lock, flags); - return 0; -} - -/** - * cdns3_gadget_udc_stop Stops gadget - * @gadget: gadget object - * - * Returns 0 - */ -static int cdns3_gadget_udc_stop(struct usb_gadget *gadget) -{ - struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget); - struct cdns3_endpoint *priv_ep; - u32 bEndpointAddress; - struct usb_ep *ep; - int ret = 0; - - priv_dev->gadget_driver = NULL; - - priv_dev->onchip_used_size = 0; - priv_dev->out_mem_is_allocated = 0; - priv_dev->gadget.speed = USB_SPEED_UNKNOWN; - - list_for_each_entry(ep, &priv_dev->gadget.ep_list, ep_list) { - priv_ep = ep_to_cdns3_ep(ep); - bEndpointAddress = priv_ep->num | priv_ep->dir; - cdns3_select_ep(priv_dev, bEndpointAddress); - writel(EP_CMD_EPRST, &priv_dev->regs->ep_cmd); - ret = cdns3_handshake(&priv_dev->regs->ep_cmd, - EP_CMD_EPRST, 0, 100); - cdns3_free_trb_pool(priv_ep); - } - - /* disable interrupt for device */ - writel(0, &priv_dev->regs->usb_ien); - writel(USB_CONF_DEVDS, &priv_dev->regs->usb_conf); - - return ret; -} - -static const struct usb_gadget_ops cdns3_gadget_ops = { - .get_frame = cdns3_gadget_get_frame, - .wakeup = cdns3_gadget_wakeup, - .set_selfpowered = cdns3_gadget_set_selfpowered, - .pullup = cdns3_gadget_pullup, - .udc_start = cdns3_gadget_udc_start, - .udc_stop = cdns3_gadget_udc_stop, - .match_ep = cdns3_gadget_match_ep, -}; - -static void cdns3_free_all_eps(struct cdns3_device *priv_dev) -{ - int i; - - /*ep0 OUT point to ep0 IN*/ - priv_dev->eps[16] = NULL; - - cdns3_free_trb_pool(priv_dev->eps[0]); - - for (i = 0; i < CDNS3_ENDPOINTS_MAX_COUNT; i++) - if (priv_dev->eps[i]) - devm_kfree(priv_dev->dev, priv_dev->eps[i]); -} - -/** - * cdns3_init_eps Initializes software endpoints of gadget - * @cdns3: extended gadget object - * - * Returns 0 on success, error code elsewhere - */ -static int cdns3_init_eps(struct cdns3_device *priv_dev) -{ - u32 ep_enabled_reg, iso_ep_reg; - struct cdns3_endpoint *priv_ep; - int ep_dir, ep_number; - u32 ep_mask; - int ret = 0; - int i; - - /* Read it from USB_CAP3 to USB_CAP5 */ - ep_enabled_reg = readl(&priv_dev->regs->usb_cap3); - iso_ep_reg = readl(&priv_dev->regs->usb_cap4); - - dev_dbg(priv_dev->dev, "Initializing non-zero endpoints\n"); - - for (i = 0; i < CDNS3_ENDPOINTS_MAX_COUNT; i++) { - ep_dir = i >> 4; /* i div 16 */ - ep_number = i & 0xF; /* i % 16 */ - ep_mask = BIT(i); - - if (!(ep_enabled_reg & ep_mask)) - continue; - - if (ep_dir && !ep_number) { - priv_dev->eps[i] = priv_dev->eps[0]; - continue; - } - - priv_ep = devm_kzalloc(priv_dev->dev, sizeof(*priv_ep), - GFP_KERNEL); - if (!priv_ep) { - ret = -ENOMEM; - goto err; - } - - /* set parent of endpoint object */ - priv_ep->cdns3_dev = priv_dev; - priv_dev->eps[i] = priv_ep; - priv_ep->num = ep_number; - priv_ep->dir = ep_dir ? USB_DIR_IN : USB_DIR_OUT; - - if (!ep_number) { - ret = cdns3_init_ep0(priv_dev, priv_ep); - if (ret) { - dev_err(priv_dev->dev, "Failed to init ep0\n"); - goto err; - } - } else { - snprintf(priv_ep->name, sizeof(priv_ep->name), "ep%d%s", - ep_number, !!ep_dir ? "in" : "out"); - priv_ep->endpoint.name = priv_ep->name; - - usb_ep_set_maxpacket_limit(&priv_ep->endpoint, - CDNS3_EP_MAX_PACKET_LIMIT); - priv_ep->endpoint.max_streams = CDNS3_EP_MAX_STREAMS; - priv_ep->endpoint.ops = &cdns3_gadget_ep_ops; - if (ep_dir) - priv_ep->endpoint.caps.dir_in = 1; - else - priv_ep->endpoint.caps.dir_out = 1; - - if (iso_ep_reg & ep_mask) - priv_ep->endpoint.caps.type_iso = 1; - - priv_ep->endpoint.caps.type_bulk = 1; - priv_ep->endpoint.caps.type_int = 1; - - list_add_tail(&priv_ep->endpoint.ep_list, - &priv_dev->gadget.ep_list); - } - - priv_ep->flags = 0; - - dev_info(priv_dev->dev, "Initialized %s support: %s %s\n", - priv_ep->name, - priv_ep->endpoint.caps.type_bulk ? "BULK, INT" : "", - priv_ep->endpoint.caps.type_iso ? "ISO" : ""); - - INIT_LIST_HEAD(&priv_ep->pending_req_list); - INIT_LIST_HEAD(&priv_ep->deferred_req_list); - } - - return 0; -err: - cdns3_free_all_eps(priv_dev); - return -ENOMEM; -} - -void cdns3_gadget_exit(struct cdns3 *cdns) -{ - struct cdns3_device *priv_dev; - - priv_dev = cdns->gadget_dev; - - devm_free_irq(cdns->dev, cdns->dev_irq, cdns); - - pm_runtime_mark_last_busy(cdns->dev); - pm_runtime_put_autosuspend(cdns->dev); - - usb_del_gadget_udc(&priv_dev->gadget); - - cdns3_free_all_eps(priv_dev); - - while (!list_empty(&priv_dev->aligned_buf_list)) { - struct cdns3_aligned_buf *buf; - - buf = cdns3_next_align_buf(&priv_dev->aligned_buf_list); - dma_free_coherent(priv_dev->sysdev, buf->size, - buf->buf, - buf->dma); - - list_del(&buf->list); - kfree(buf); - } - - dma_free_coherent(priv_dev->sysdev, 8, priv_dev->setup_buf, - priv_dev->setup_dma); - - kfree(priv_dev->zlp_buf); - kfree(priv_dev); - cdns->gadget_dev = NULL; - cdns3_drd_switch_gadget(cdns, 0); -} - -static int cdns3_gadget_start(struct cdns3 *cdns) -{ - struct cdns3_device *priv_dev; - u32 max_speed; - int ret; - - priv_dev = kzalloc(sizeof(*priv_dev), GFP_KERNEL); - if (!priv_dev) - return -ENOMEM; - - cdns->gadget_dev = priv_dev; - priv_dev->sysdev = cdns->dev; - priv_dev->dev = cdns->dev; - priv_dev->regs = cdns->dev_regs; - - device_property_read_u16(priv_dev->dev, "cdns,on-chip-buff-size", - &priv_dev->onchip_buffers); - - if (priv_dev->onchip_buffers <= 0) { - u32 reg = readl(&priv_dev->regs->usb_cap2); - - priv_dev->onchip_buffers = USB_CAP2_ACTUAL_MEM_SIZE(reg); - } - - if (!priv_dev->onchip_buffers) - priv_dev->onchip_buffers = 256; - - max_speed = usb_get_maximum_speed(cdns->dev); - - /* Check the maximum_speed parameter */ - switch (max_speed) { - case USB_SPEED_FULL: - case USB_SPEED_HIGH: - case USB_SPEED_SUPER: - break; - default: - dev_err(cdns->dev, "invalid maximum_speed parameter %d\n", - max_speed); - /* fall through */ - case USB_SPEED_UNKNOWN: - /* default to superspeed */ - max_speed = USB_SPEED_SUPER; - break; - } - - /* fill gadget fields */ - priv_dev->gadget.max_speed = max_speed; - priv_dev->gadget.speed = USB_SPEED_UNKNOWN; - priv_dev->gadget.ops = &cdns3_gadget_ops; - priv_dev->gadget.name = "usb-ss-gadget"; - priv_dev->gadget.sg_supported = 1; - - spin_lock_init(&priv_dev->lock); - INIT_WORK(&priv_dev->pending_status_wq, - cdns3_pending_setup_status_handler); - - /* initialize endpoint container */ - INIT_LIST_HEAD(&priv_dev->gadget.ep_list); - INIT_LIST_HEAD(&priv_dev->aligned_buf_list); - - ret = cdns3_init_eps(priv_dev); - if (ret) { - dev_err(priv_dev->dev, "Failed to create endpoints\n"); - goto err1; - } - - /* allocate memory for setup packet buffer */ - priv_dev->setup_buf = dma_alloc_coherent(priv_dev->sysdev, 8, - &priv_dev->setup_dma, GFP_DMA); - if (!priv_dev->setup_buf) { - ret = -ENOMEM; - goto err2; - } - - priv_dev->dev_ver = readl(&priv_dev->regs->usb_cap6); - - dev_dbg(priv_dev->dev, "Device Controller version: %08x\n", - readl(&priv_dev->regs->usb_cap6)); - dev_dbg(priv_dev->dev, "USB Capabilities:: %08x\n", - readl(&priv_dev->regs->usb_cap1)); - dev_dbg(priv_dev->dev, "On-Chip memory cnfiguration: %08x\n", - readl(&priv_dev->regs->usb_cap2)); - - priv_dev->dev_ver = GET_DEV_BASE_VERSION(priv_dev->dev_ver); - - priv_dev->zlp_buf = kzalloc(CDNS3_EP_ZLP_BUF_SIZE, GFP_KERNEL); - if (!priv_dev->zlp_buf) { - ret = -ENOMEM; - goto err3; - } - - /* add USB gadget device */ - ret = usb_add_gadget_udc(priv_dev->dev, &priv_dev->gadget); - if (ret < 0) { - dev_err(priv_dev->dev, - "Failed to register USB device controller\n"); - goto err4; - } - - return 0; -err4: - kfree(priv_dev->zlp_buf); -err3: - dma_free_coherent(priv_dev->sysdev, 8, priv_dev->setup_buf, - priv_dev->setup_dma); -err2: - cdns3_free_all_eps(priv_dev); -err1: - cdns->gadget_dev = NULL; - return ret; -} - -static int __cdns3_gadget_init(struct cdns3 *cdns) -{ - struct cdns3_device *priv_dev; - int ret = 0; - - cdns3_drd_switch_gadget(cdns, 1); - pm_runtime_get_sync(cdns->dev); - - ret = cdns3_gadget_start(cdns); - if (ret) - return ret; - - priv_dev = cdns->gadget_dev; - ret = devm_request_threaded_irq(cdns->dev, cdns->dev_irq, - cdns3_device_irq_handler, - cdns3_device_thread_irq_handler, - IRQF_SHARED, dev_name(cdns->dev), cdns); - - if (ret) - goto err0; - - return 0; -err0: - cdns3_gadget_exit(cdns); - return ret; -} - -static int cdns3_gadget_suspend(struct cdns3 *cdns, bool do_wakeup) -{ - cdns3_gadget_exit(cdns); - return 0; -} - -static int cdns3_gadget_resume(struct cdns3 *cdns, bool hibernated) -{ - return cdns3_gadget_start(cdns); -} - -/** - * cdns3_gadget_init - initialize device structure - * - * cdns: cdns3 instance - * - * This function initializes the gadget. - */ -int cdns3_gadget_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_gadget_init; - rdrv->stop = cdns3_gadget_exit; - rdrv->suspend = cdns3_gadget_suspend; - rdrv->resume = cdns3_gadget_resume; - rdrv->state = CDNS3_ROLE_STATE_INACTIVE; - rdrv->name = "gadget"; - cdns->roles[CDNS3_ROLE_GADGET] = rdrv; - - return 0; -} diff --git a/drivers/usb/cdns3/gadget.h b/drivers/usb/cdns3/gadget.h deleted file mode 100644 index 64cead1aee32..000000000000 --- a/drivers/usb/cdns3/gadget.h +++ /dev/null @@ -1,1321 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * USBSS device controller driver header file - * - * Copyright (C) 2018-2019 Cadence. - * Copyright (C) 2017-2018 NXP - * - * Author: Pawel Laszczak <pawell@cadence.com> - * Pawel Jez <pjez@cadence.com> - * Peter Chen <peter.chen@nxp.com> - */ -#ifndef __LINUX_CDNS3_GADGET -#define __LINUX_CDNS3_GADGET -#include <linux/usb/gadget.h> - -/* - * USBSS-DEV register interface. - * This corresponds to the USBSS Device Controller Interface - */ - -/** - * struct cdns3_usb_regs - device controller registers. - * @usb_conf: Global Configuration Register. - * @usb_sts: Global Status Register. - * @usb_cmd: Global Command Register. - * @usb_itpn: ITP/SOF number Register. - * @usb_lpm: Global Command Register. - * @usb_ien: USB Interrupt Enable Register. - * @usb_ists: USB Interrupt Status Register. - * @ep_sel: Endpoint Select Register. - * @ep_traddr: Endpoint Transfer Ring Address Register. - * @ep_cfg: Endpoint Configuration Register. - * @ep_cmd: Endpoint Command Register. - * @ep_sts: Endpoint Status Register. - * @ep_sts_sid: Endpoint Status Register. - * @ep_sts_en: Endpoint Status Register Enable. - * @drbl: Doorbell Register. - * @ep_ien: EP Interrupt Enable Register. - * @ep_ists: EP Interrupt Status Register. - * @usb_pwr: Global Power Configuration Register. - * @usb_conf2: Global Configuration Register 2. - * @usb_cap1: Capability Register 1. - * @usb_cap2: Capability Register 2. - * @usb_cap3: Capability Register 3. - * @usb_cap4: Capability Register 4. - * @usb_cap5: Capability Register 5. - * @usb_cap6: Capability Register 6. - * @usb_cpkt1: Custom Packet Register 1. - * @usb_cpkt2: Custom Packet Register 2. - * @usb_cpkt3: Custom Packet Register 3. - * @ep_dma_ext_addr: Upper address for DMA operations Register. - * @buf_addr: Address for On-chip Buffer operations Register. - * @buf_data: Data for On-chip Buffer operations Register. - * @buf_ctrl: On-chip Buffer Access Control Registe. - * @dtrans: DMA Transfer Mode Register. - * @tdl_from_trb: Source of TD Configuration Register. - * @tdl_beh: TDL Behavior Configuration Register. - * @ep_tdl: Endpoint TDL Register. - * @tdl_beh2: TDL Behavior 2 Configuration Register. - * @dma_adv_td: DMA Advance TD Configuration Register. - * @reserved1: Reserved. - * @cfg_regs: Configuration registers. - * @reserved2: Reserved. - * @dma_axi_ctrl: AXI Control register. - * @dma_axi_id: AXI ID register. - * @dma_axi_cap: AXI Capability register. - * @dma_axi_ctrl0: AXI Control 0 register. - * @dma_axi_ctrl1: AXI Control 1 register. - */ -struct cdns3_usb_regs { - __le32 usb_conf; - __le32 usb_sts; - __le32 usb_cmd; - __le32 usb_itpn; - __le32 usb_lpm; - __le32 usb_ien; - __le32 usb_ists; - __le32 ep_sel; - __le32 ep_traddr; - __le32 ep_cfg; - __le32 ep_cmd; - __le32 ep_sts; - __le32 ep_sts_sid; - __le32 ep_sts_en; - __le32 drbl; - __le32 ep_ien; - __le32 ep_ists; - __le32 usb_pwr; - __le32 usb_conf2; - __le32 usb_cap1; - __le32 usb_cap2; - __le32 usb_cap3; - __le32 usb_cap4; - __le32 usb_cap5; - __le32 usb_cap6; - __le32 usb_cpkt1; - __le32 usb_cpkt2; - __le32 usb_cpkt3; - __le32 ep_dma_ext_addr; - __le32 buf_addr; - __le32 buf_data; - __le32 buf_ctrl; - __le32 dtrans; - __le32 tdl_from_trb; - __le32 tdl_beh; - __le32 ep_tdl; - __le32 tdl_beh2; - __le32 dma_adv_td; - __le32 reserved1[26]; - __le32 cfg_reg1; - __le32 dbg_link1; - __le32 dbg_link2; - __le32 cfg_regs[74]; - __le32 reserved2[34]; - __le32 dma_axi_ctrl; - __le32 dma_axi_id; - __le32 dma_axi_cap; - __le32 dma_axi_ctrl0; - __le32 dma_axi_ctrl1; -}; - -/* USB_CONF - bitmasks */ -/* Reset USB device configuration. */ -#define USB_CONF_CFGRST BIT(0) -/* Set Configuration. */ -#define USB_CONF_CFGSET BIT(1) -/* Disconnect USB device in SuperSpeed. */ -#define USB_CONF_USB3DIS BIT(3) -/* Disconnect USB device in HS/FS */ -#define USB_CONF_USB2DIS BIT(4) -/* Little Endian access - default */ -#define USB_CONF_LENDIAN BIT(5) -/* - * Big Endian access. Driver assume that byte order for - * SFRs access always is as Little Endian so this bit - * is not used. - */ -#define USB_CONF_BENDIAN BIT(6) -/* Device software reset. */ -#define USB_CONF_SWRST BIT(7) -/* Singular DMA transfer mode. Only for VER < DEV_VER_V3*/ -#define USB_CONF_DSING BIT(8) -/* Multiple DMA transfers mode. Only for VER < DEV_VER_V3 */ -#define USB_CONF_DMULT BIT(9) -/* DMA clock turn-off enable. */ -#define USB_CONF_DMAOFFEN BIT(10) -/* DMA clock turn-off disable. */ -#define USB_CONF_DMAOFFDS BIT(11) -/* Clear Force Full Speed. */ -#define USB_CONF_CFORCE_FS BIT(12) -/* Set Force Full Speed. */ -#define USB_CONF_SFORCE_FS BIT(13) -/* Device enable. */ -#define USB_CONF_DEVEN BIT(14) -/* Device disable. */ -#define USB_CONF_DEVDS BIT(15) -/* L1 LPM state entry enable (used in HS/FS mode). */ -#define USB_CONF_L1EN BIT(16) -/* L1 LPM state entry disable (used in HS/FS mode). */ -#define USB_CONF_L1DS BIT(17) -/* USB 2.0 clock gate disable. */ -#define USB_CONF_CLK2OFFEN BIT(18) -/* USB 2.0 clock gate enable. */ -#define USB_CONF_CLK2OFFDS BIT(19) -/* L0 LPM state entry request (used in HS/FS mode). */ -#define USB_CONF_LGO_L0 BIT(20) -/* USB 3.0 clock gate disable. */ -#define USB_CONF_CLK3OFFEN BIT(21) -/* USB 3.0 clock gate enable. */ -#define USB_CONF_CLK3OFFDS BIT(22) -/* Bit 23 is reserved*/ -/* U1 state entry enable (used in SS mode). */ -#define USB_CONF_U1EN BIT(24) -/* U1 state entry disable (used in SS mode). */ -#define USB_CONF_U1DS BIT(25) -/* U2 state entry enable (used in SS mode). */ -#define USB_CONF_U2EN BIT(26) -/* U2 state entry disable (used in SS mode). */ -#define USB_CONF_U2DS BIT(27) -/* U0 state entry request (used in SS mode). */ -#define USB_CONF_LGO_U0 BIT(28) -/* U1 state entry request (used in SS mode). */ -#define USB_CONF_LGO_U1 BIT(29) -/* U2 state entry request (used in SS mode). */ -#define USB_CONF_LGO_U2 BIT(30) -/* SS.Inactive state entry request (used in SS mode) */ -#define USB_CONF_LGO_SSINACT BIT(31) - -/* USB_STS - bitmasks */ -/* - * Configuration status. - * 1 - device is in the configured state. - * 0 - device is not configured. - */ -#define USB_STS_CFGSTS_MASK BIT(0) -#define USB_STS_CFGSTS(p) ((p) & USB_STS_CFGSTS_MASK) -/* - * On-chip memory overflow. - * 0 - On-chip memory status OK. - * 1 - On-chip memory overflow. - */ -#define USB_STS_OV_MASK BIT(1) -#define USB_STS_OV(p) ((p) & USB_STS_OV_MASK) -/* - * SuperSpeed connection status. - * 0 - USB in SuperSpeed mode disconnected. - * 1 - USB in SuperSpeed mode connected. - */ -#define USB_STS_USB3CONS_MASK BIT(2) -#define USB_STS_USB3CONS(p) ((p) & USB_STS_USB3CONS_MASK) -/* - * DMA transfer configuration status. - * 0 - single request. - * 1 - multiple TRB chain - * Supported only for controller version < DEV_VER_V3 - */ -#define USB_STS_DTRANS_MASK BIT(3) -#define USB_STS_DTRANS(p) ((p) & USB_STS_DTRANS_MASK) -/* - * Device speed. - * 0 - Undefined (value after reset). - * 1 - Low speed - * 2 - Full speed - * 3 - High speed - * 4 - Super speed - */ -#define USB_STS_USBSPEED_MASK GENMASK(6, 4) -#define USB_STS_USBSPEED(p) (((p) & USB_STS_USBSPEED_MASK) >> 4) -#define USB_STS_LS (0x1 << 4) -#define USB_STS_FS (0x2 << 4) -#define USB_STS_HS (0x3 << 4) -#define USB_STS_SS (0x4 << 4) -#define DEV_UNDEFSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == (0x0 << 4)) -#define DEV_LOWSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_LS) -#define DEV_FULLSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_FS) -#define DEV_HIGHSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_HS) -#define DEV_SUPERSPEED(p) (((p) & USB_STS_USBSPEED_MASK) == USB_STS_SS) -/* - * Endianness for SFR access. - * 0 - Little Endian order (default after hardware reset). - * 1 - Big Endian order - */ -#define USB_STS_ENDIAN_MASK BIT(7) -#define USB_STS_ENDIAN(p) ((p) & USB_STS_ENDIAN_MASK) -/* - * HS/FS clock turn-off status. - * 0 - hsfs clock is always on. - * 1 - hsfs clock turn-off in L2 (HS/FS mode) is enabled - * (default after hardware reset). - */ -#define USB_STS_CLK2OFF_MASK BIT(8) -#define USB_STS_CLK2OFF(p) ((p) & USB_STS_CLK2OFF_MASK) -/* - * PCLK clock turn-off status. - * 0 - pclk clock is always on. - * 1 - pclk clock turn-off in U3 (SS mode) is enabled - * (default after hardware reset). - */ -#define USB_STS_CLK3OFF_MASK BIT(9) -#define USB_STS_CLK3OFF(p) ((p) & USB_STS_CLK3OFF_MASK) -/* - * Controller in reset state. - * 0 - Internal reset is active. - * 1 - Internal reset is not active and controller is fully operational. - */ -#define USB_STS_IN_RST_MASK BIT(10) -#define USB_STS_IN_RST(p) ((p) & USB_STS_IN_RST_MASK) -/* - * Status of the "TDL calculation basing on TRB" feature. - * 0 - disabled - * 1 - enabled - * Supported only for DEV_VER_V2 controller version. - */ -#define USB_STS_TDL_TRB_ENABLED BIT(11) -/* - * Device enable Status. - * 0 - USB device is disabled (VBUS input is disconnected from internal logic). - * 1 - USB device is enabled (VBUS input is connected to the internal logic). - */ -#define USB_STS_DEVS_MASK BIT(14) -#define USB_STS_DEVS(p) ((p) & USB_STS_DEVS_MASK) -/* - * Address status. - * 0 - USB device is default state. - * 1 - USB device is at least in address state. - */ -#define USB_STS_ADDRESSED_MASK BIT(15) -#define USB_STS_ADDRESSED(p) ((p) & USB_STS_ADDRESSED_MASK) -/* - * L1 LPM state enable status (used in HS/FS mode). - * 0 - Entering to L1 LPM state disabled. - * 1 - Entering to L1 LPM state enabled. - */ -#define USB_STS_L1ENS_MASK BIT(16) -#define USB_STS_L1ENS(p) ((p) & USB_STS_L1ENS_MASK) -/* - * Internal VBUS connection status (used both in HS/FS and SS mode). - * 0 - internal VBUS is not detected. - * 1 - internal VBUS is detected. - */ -#define USB_STS_VBUSS_MASK BIT(17) -#define USB_STS_VBUSS(p) ((p) & USB_STS_VBUSS_MASK) -/* - * HS/FS LPM state (used in FS/HS mode). - * 0 - L0 State - * 1 - L1 State - * 2 - L2 State - * 3 - L3 State - */ -#define USB_STS_LPMST_MASK GENMASK(19, 18) -#define DEV_L0_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x0 << 18)) -#define DEV_L1_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x1 << 18)) -#define DEV_L2_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x2 << 18)) -#define DEV_L3_STATE(p) (((p) & USB_STS_LPMST_MASK) == (0x3 << 18)) -/* - * Disable HS status (used in FS/HS mode). - * 0 - the disconnect bit for HS/FS mode is set . - * 1 - the disconnect bit for HS/FS mode is not set. - */ -#define USB_STS_USB2CONS_MASK BIT(20) -#define USB_STS_USB2CONS(p) ((p) & USB_STS_USB2CONS_MASK) -/* - * HS/FS mode connection status (used in FS/HS mode). - * 0 - High Speed operations in USB2.0 (FS/HS) mode not disabled. - * 1 - High Speed operations in USB2.0 (FS/HS). - */ -#define USB_STS_DISABLE_HS_MASK BIT(21) -#define USB_STS_DISABLE_HS(p) ((p) & USB_STS_DISABLE_HS_MASK) -/* - * U1 state enable status (used in SS mode). - * 0 - Entering to U1 state disabled. - * 1 - Entering to U1 state enabled. - */ -#define USB_STS_U1ENS_MASK BIT(24) -#define USB_STS_U1ENS(p) ((p) & USB_STS_U1ENS_MASK) -/* - * U2 state enable status (used in SS mode). - * 0 - Entering to U2 state disabled. - * 1 - Entering to U2 state enabled. - */ -#define USB_STS_U2ENS_MASK BIT(25) -#define USB_STS_U2ENS(p) ((p) & USB_STS_U2ENS_MASK) -/* - * SuperSpeed Link LTSSM state. This field reflects USBSS-DEV current - * SuperSpeed link state - */ -#define USB_STS_LST_MASK GENMASK(29, 26) -#define DEV_LST_U0 (((p) & USB_STS_LST_MASK) == (0x0 << 26)) -#define DEV_LST_U1 (((p) & USB_STS_LST_MASK) == (0x1 << 26)) -#define DEV_LST_U2 (((p) & USB_STS_LST_MASK) == (0x2 << 26)) -#define DEV_LST_U3 (((p) & USB_STS_LST_MASK) == (0x3 << 26)) -#define DEV_LST_DISABLED (((p) & USB_STS_LST_MASK) == (0x4 << 26)) -#define DEV_LST_RXDETECT (((p) & USB_STS_LST_MASK) == (0x5 << 26)) -#define DEV_LST_INACTIVE (((p) & USB_STS_LST_MASK) == (0x6 << 26)) -#define DEV_LST_POLLING (((p) & USB_STS_LST_MASK) == (0x7 << 26)) -#define DEV_LST_RECOVERY (((p) & USB_STS_LST_MASK) == (0x8 << 26)) -#define DEV_LST_HOT_RESET (((p) & USB_STS_LST_MASK) == (0x9 << 26)) -#define DEV_LST_COMP_MODE (((p) & USB_STS_LST_MASK) == (0xa << 26)) -#define DEV_LST_LB_STATE (((p) & USB_STS_LST_MASK) == (0xb << 26)) -/* - * DMA clock turn-off status. - * 0 - DMA clock is always on (default after hardware reset). - * 1 - DMA clock turn-off in U1, U2 and U3 (SS mode) is enabled. - */ -#define USB_STS_DMAOFF_MASK BIT(30) -#define USB_STS_DMAOFF(p) ((p) & USB_STS_DMAOFF_MASK) -/* - * SFR Endian status. - * 0 - Little Endian order (default after hardware reset). - * 1 - Big Endian order. - */ -#define USB_STS_ENDIAN2_MASK BIT(31) -#define USB_STS_ENDIAN2(p) ((p) & USB_STS_ENDIAN2_MASK) - -/* USB_CMD - bitmasks */ -/* Set Function Address */ -#define USB_CMD_SET_ADDR BIT(0) -/* - * Function Address This field is saved to the device only when the field - * SET_ADDR is set '1 ' during write to USB_CMD register. - * Software is responsible for entering the address of the device during - * SET_ADDRESS request service. This field should be set immediately after - * the SETUP packet is decoded, and prior to confirmation of the status phase - */ -#define USB_CMD_FADDR_MASK GENMASK(7, 1) -#define USB_CMD_FADDR(p) (((p) << 1) & USB_CMD_FADDR_MASK) -/* Send Function Wake Device Notification TP (used only in SS mode). */ -#define USB_CMD_SDNFW BIT(8) -/* Set Test Mode (used only in HS/FS mode). */ -#define USB_CMD_STMODE BIT(9) -/* Test mode selector (used only in HS/FS mode) */ -#define USB_STS_TMODE_SEL_MASK GENMASK(11, 10) -#define USB_STS_TMODE_SEL(p) (((p) << 10) & USB_STS_TMODE_SEL_MASK) -/* - * Send Latency Tolerance Message Device Notification TP (used only - * in SS mode). - */ -#define USB_CMD_SDNLTM BIT(12) -/* Send Custom Transaction Packet (used only in SS mode) */ -#define USB_CMD_SPKT BIT(13) -/*Device Notification 'Function Wake' - Interface value (only in SS mode. */ -#define USB_CMD_DNFW_INT_MASK GENMASK(23, 16) -#define USB_STS_DNFW_INT(p) (((p) << 16) & USB_CMD_DNFW_INT_MASK) -/* - * Device Notification 'Latency Tolerance Message' -373 BELT value [7:0] - * (used only in SS mode). - */ -#define USB_CMD_DNLTM_BELT_MASK GENMASK(27, 16) -#define USB_STS_DNLTM_BELT(p) (((p) << 16) & USB_CMD_DNLTM_BELT_MASK) - -/* USB_ITPN - bitmasks */ -/* - * ITP(SS) / SOF (HS/FS) number - * In SS mode this field represent number of last ITP received from host. - * In HS/FS mode this field represent number of last SOF received from host. - */ -#define USB_ITPN_MASK GENMASK(13, 0) -#define USB_ITPN(p) ((p) & USB_ITPN_MASK) - -/* USB_LPM - bitmasks */ -/* Host Initiated Resume Duration. */ -#define USB_LPM_HIRD_MASK GENMASK(3, 0) -#define USB_LPM_HIRD(p) ((p) & USB_LPM_HIRD_MASK) -/* Remote Wakeup Enable (bRemoteWake). */ -#define USB_LPM_BRW BIT(4) - -/* USB_IEN - bitmasks */ -/* SS connection interrupt enable */ -#define USB_IEN_CONIEN BIT(0) -/* SS disconnection interrupt enable. */ -#define USB_IEN_DISIEN BIT(1) -/* USB SS warm reset interrupt enable. */ -#define USB_IEN_UWRESIEN BIT(2) -/* USB SS hot reset interrupt enable */ -#define USB_IEN_UHRESIEN BIT(3) -/* SS link U3 state enter interrupt enable (suspend).*/ -#define USB_IEN_U3ENTIEN BIT(4) -/* SS link U3 state exit interrupt enable (wakeup). */ -#define USB_IEN_U3EXTIEN BIT(5) -/* SS link U2 state enter interrupt enable.*/ -#define USB_IEN_U2ENTIEN BIT(6) -/* SS link U2 state exit interrupt enable.*/ -#define USB_IEN_U2EXTIEN BIT(7) -/* SS link U1 state enter interrupt enable.*/ -#define USB_IEN_U1ENTIEN BIT(8) -/* SS link U1 state exit interrupt enable.*/ -#define USB_IEN_U1EXTIEN BIT(9) -/* ITP/SOF packet detected interrupt enable.*/ -#define USB_IEN_ITPIEN BIT(10) -/* Wakeup interrupt enable.*/ -#define USB_IEN_WAKEIEN BIT(11) -/* Send Custom Packet interrupt enable.*/ -#define USB_IEN_SPKTIEN BIT(12) -/* HS/FS mode connection interrupt enable.*/ -#define USB_IEN_CON2IEN BIT(16) -/* HS/FS mode disconnection interrupt enable.*/ -#define USB_IEN_DIS2IEN BIT(17) -/* USB reset (HS/FS mode) interrupt enable.*/ -#define USB_IEN_U2RESIEN BIT(18) -/* LPM L2 state enter interrupt enable.*/ -#define USB_IEN_L2ENTIEN BIT(20) -/* LPM L2 state exit interrupt enable.*/ -#define USB_IEN_L2EXTIEN BIT(21) -/* LPM L1 state enter interrupt enable.*/ -#define USB_IEN_L1ENTIEN BIT(24) -/* LPM L1 state exit interrupt enable.*/ -#define USB_IEN_L1EXTIEN BIT(25) -/* Configuration reset interrupt enable.*/ -#define USB_IEN_CFGRESIEN BIT(26) -/* Start of the USB SS warm reset interrupt enable.*/ -#define USB_IEN_UWRESSIEN BIT(28) -/* End of the USB SS warm reset interrupt enable.*/ -#define USB_IEN_UWRESEIEN BIT(29) - -#define USB_IEN_INIT (USB_IEN_U2RESIEN | USB_ISTS_DIS2I | USB_IEN_CON2IEN \ - | USB_IEN_UHRESIEN | USB_IEN_UWRESIEN | USB_IEN_DISIEN \ - | USB_IEN_CONIEN | USB_IEN_U3EXTIEN | USB_IEN_L2ENTIEN \ - | USB_IEN_L2EXTIEN | USB_IEN_L1ENTIEN) - -/* USB_ISTS - bitmasks */ -/* SS Connection detected. */ -#define USB_ISTS_CONI BIT(0) -/* SS Disconnection detected. */ -#define USB_ISTS_DISI BIT(1) -/* UUSB warm reset detectede. */ -#define USB_ISTS_UWRESI BIT(2) -/* USB hot reset detected. */ -#define USB_ISTS_UHRESI BIT(3) -/* U3 link state enter detected (suspend).*/ -#define USB_ISTS_U3ENTI BIT(4) -/* U3 link state exit detected (wakeup). */ -#define USB_ISTS_U3EXTI BIT(5) -/* U2 link state enter detected.*/ -#define USB_ISTS_U2ENTI BIT(6) -/* U2 link state exit detected.*/ -#define USB_ISTS_U2EXTI BIT(7) -/* U1 link state enter detected.*/ -#define USB_ISTS_U1ENTI BIT(8) -/* U1 link state exit detected.*/ -#define USB_ISTS_U1EXTI BIT(9) -/* ITP/SOF packet detected.*/ -#define USB_ISTS_ITPI BIT(10) -/* Wakeup detected.*/ -#define USB_ISTS_WAKEI BIT(11) -/* Send Custom Packet detected.*/ -#define USB_ISTS_SPKTI BIT(12) -/* HS/FS mode connection detected.*/ -#define USB_ISTS_CON2I BIT(16) -/* HS/FS mode disconnection detected.*/ -#define USB_ISTS_DIS2I BIT(17) -/* USB reset (HS/FS mode) detected.*/ -#define USB_ISTS_U2RESI BIT(18) -/* LPM L2 state enter detected.*/ -#define USB_ISTS_L2ENTI BIT(20) -/* LPM L2 state exit detected.*/ -#define USB_ISTS_L2EXTI BIT(21) -/* LPM L1 state enter detected.*/ -#define USB_ISTS_L1ENTI BIT(24) -/* LPM L1 state exit detected.*/ -#define USB_ISTS_L1EXTI BIT(25) -/* USB configuration reset detected.*/ -#define USB_ISTS_CFGRESI BIT(26) -/* Start of the USB warm reset detected.*/ -#define USB_ISTS_UWRESSI BIT(28) -/* End of the USB warm reset detected.*/ -#define USB_ISTS_UWRESEI BIT(29) - -/* USB_SEL - bitmasks */ -#define EP_SEL_EPNO_MASK GENMASK(3, 0) -/* Endpoint number. */ -#define EP_SEL_EPNO(p) ((p) & EP_SEL_EPNO_MASK) -/* Endpoint direction bit - 0 - OUT, 1 - IN. */ -#define EP_SEL_DIR BIT(7) - -#define select_ep_in(nr) (EP_SEL_EPNO(p) | EP_SEL_DIR) -#define select_ep_out (EP_SEL_EPNO(p)) - -/* EP_TRADDR - bitmasks */ -/* Transfer Ring address. */ -#define EP_TRADDR_TRADDR(p) ((p)) - -/* EP_CFG - bitmasks */ -/* Endpoint enable */ -#define EP_CFG_ENABLE BIT(0) -/* - * Endpoint type. - * 1 - isochronous - * 2 - bulk - * 3 - interrupt - */ -#define EP_CFG_EPTYPE_MASK GENMASK(2, 1) -#define EP_CFG_EPTYPE(p) (((p) << 1) & EP_CFG_EPTYPE_MASK) -/* Stream support enable (only in SS mode). */ -#define EP_CFG_STREAM_EN BIT(3) -/* TDL check (only in SS mode for BULK EP). */ -#define EP_CFG_TDL_CHK BIT(4) -/* SID check (only in SS mode for BULK OUT EP). */ -#define EP_CFG_SID_CHK BIT(5) -/* DMA transfer endianness. */ -#define EP_CFG_EPENDIAN BIT(7) -/* Max burst size (used only in SS mode). */ -#define EP_CFG_MAXBURST_MASK GENMASK(11, 8) -#define EP_CFG_MAXBURST(p) (((p) << 8) & EP_CFG_MAXBURST_MASK) -/* ISO max burst. */ -#define EP_CFG_MULT_MASK GENMASK(15, 14) -#define EP_CFG_MULT(p) (((p) << 14) & EP_CFG_MULT_MASK) -/* ISO max burst. */ -#define EP_CFG_MAXPKTSIZE_MASK GENMASK(26, 16) -#define EP_CFG_MAXPKTSIZE(p) (((p) << 16) & EP_CFG_MAXPKTSIZE_MASK) -/* Max number of buffered packets. */ -#define EP_CFG_BUFFERING_MASK GENMASK(31, 27) -#define EP_CFG_BUFFERING(p) (((p) << 27) & EP_CFG_BUFFERING_MASK) - -/* EP_CMD - bitmasks */ -/* Endpoint reset. */ -#define EP_CMD_EPRST BIT(0) -/* Endpoint STALL set. */ -#define EP_CMD_SSTALL BIT(1) -/* Endpoint STALL clear. */ -#define EP_CMD_CSTALL BIT(2) -/* Send ERDY TP. */ -#define EP_CMD_ERDY BIT(3) -/* Request complete. */ -#define EP_CMD_REQ_CMPL BIT(5) -/* Transfer descriptor ready. */ -#define EP_CMD_DRDY BIT(6) -/* Data flush. */ -#define EP_CMD_DFLUSH BIT(7) -/* - * Transfer Descriptor Length write (used only for Bulk Stream capable - * endpoints in SS mode). - * Bit Removed from DEV_VER_V3 controller version. - */ -#define EP_CMD_STDL BIT(8) -/* - * Transfer Descriptor Length (used only in SS mode for bulk endpoints). - * Bits Removed from DEV_VER_V3 controller version. - */ -#define EP_CMD_TDL_MASK GENMASK(15, 9) -#define EP_CMD_TDL(p) (((p) << 9) & EP_CMD_TDL_MASK) -/* ERDY Stream ID value (used in SS mode). */ -#define EP_CMD_ERDY_SID_MASK GENMASK(31, 16) -#define EP_CMD_ERDY_SID(p) (((p) << 16) & EP_CMD_SID_MASK) - -/* EP_STS - bitmasks */ -/* Setup transfer complete. */ -#define EP_STS_SETUP BIT(0) -/* Endpoint STALL status. */ -#define EP_STS_STALL(p) ((p) & BIT(1)) -/* Interrupt On Complete. */ -#define EP_STS_IOC BIT(2) -/* Interrupt on Short Packet. */ -#define EP_STS_ISP BIT(3) -/* Transfer descriptor missing. */ -#define EP_STS_DESCMIS BIT(4) -/* Stream Rejected (used only in SS mode) */ -#define EP_STS_STREAMR BIT(5) -/* EXIT from MOVE DATA State (used only for stream transfers in SS mode). */ -#define EP_STS_MD_EXIT BIT(6) -/* TRB error. */ -#define EP_STS_TRBERR BIT(7) -/* Not ready (used only in SS mode). */ -#define EP_STS_NRDY BIT(8) -/* DMA busy bit. */ -#define EP_STS_DBUSY BIT(9) -/* Endpoint Buffer Empty */ -#define EP_STS_BUFFEMPTY(p) ((p) & BIT(10)) -/* Current Cycle Status */ -#define EP_STS_CCS(p) ((p) & BIT(11)) -/* Prime (used only in SS mode. */ -#define EP_STS_PRIME BIT(12) -/* Stream error (used only in SS mode). */ -#define EP_STS_SIDERR BIT(13) -/* OUT size mismatch. */ -#define EP_STS_OUTSMM BIT(14) -/* ISO transmission error. */ -#define EP_STS_ISOERR BIT(15) -/* Host Packet Pending (only for SS mode). */ -#define EP_STS_HOSTPP(p) ((p) & BIT(16)) -/* Stream Protocol State Machine State (only for Bulk stream endpoints). */ -#define EP_STS_SPSMST_MASK GENMASK(18, 17) -#define EP_STS_SPSMST_DISABLED(p) (((p) & EP_STS_SPSMST_MASK) >> 17) -#define EP_STS_SPSMST_IDLE(p) (((p) & EP_STS_SPSMST_MASK) >> 17) -#define EP_STS_SPSMST_START_STREAM(p) (((p) & EP_STS_SPSMST_MASK) >> 17) -#define EP_STS_SPSMST_MOVE_DATA(p) (((p) & EP_STS_SPSMST_MASK) >> 17) -/* Interrupt On Transfer complete. */ -#define EP_STS_IOT BIT(19) -/* OUT queue endpoint number. */ -#define EP_STS_OUTQ_NO_MASK GENMASK(27, 24) -#define EP_STS_OUTQ_NO(p) (((p) & EP_STS_OUTQ_NO_MASK) >> 24) -/* OUT queue valid flag. */ -#define EP_STS_OUTQ_VAL_MASK BIT(28) -#define EP_STS_OUTQ_VAL(p) ((p) & EP_STS_OUTQ_VAL_MASK) -/* SETUP WAIT. */ -#define EP_STS_STPWAIT BIT(31) - -/* EP_STS_SID - bitmasks */ -/* Stream ID (used only in SS mode). */ -#define EP_STS_SID_MASK GENMASK(15, 0) -#define EP_STS_SID(p) ((p) & EP_STS_SID_MASK) - -/* EP_STS_EN - bitmasks */ -/* SETUP interrupt enable. */ -#define EP_STS_EN_SETUPEN BIT(0) -/* OUT transfer missing descriptor enable. */ -#define EP_STS_EN_DESCMISEN BIT(4) -/* Stream Rejected enable. */ -#define EP_STS_EN_STREAMREN BIT(5) -/* Move Data Exit enable.*/ -#define EP_STS_EN_MD_EXITEN BIT(6) -/* TRB enable. */ -#define EP_STS_EN_TRBERREN BIT(7) -/* NRDY enable. */ -#define EP_STS_EN_NRDYEN BIT(8) -/* Prime enable. */ -#define EP_STS_EN_PRIMEEEN BIT(12) -/* Stream error enable. */ -#define EP_STS_EN_SIDERREN BIT(13) -/* OUT size mismatch enable. */ -#define EP_STS_EN_OUTSMMEN BIT(14) -/* ISO transmission error enable. */ -#define EP_STS_EN_ISOERREN BIT(15) -/* Interrupt on Transmission complete enable. */ -#define EP_STS_EN_IOTEN BIT(19) -/* Setup Wait interrupt enable. */ -#define EP_STS_EN_STPWAITEN BIT(31) - -/* DRBL- bitmasks */ -#define DB_VALUE_BY_INDEX(index) (1 << (index)) -#define DB_VALUE_EP0_OUT BIT(0) -#define DB_VALUE_EP0_IN BIT(16) - -/* EP_IEN - bitmasks */ -#define EP_IEN(index) (1 << (index)) -#define EP_IEN_EP_OUT0 BIT(0) -#define EP_IEN_EP_IN0 BIT(16) - -/* EP_ISTS - bitmasks */ -#define EP_ISTS(index) (1 << (index)) -#define EP_ISTS_EP_OUT0 BIT(0) -#define EP_ISTS_EP_IN0 BIT(16) - -/* USB_PWR- bitmasks */ -/*Power Shut Off capability enable*/ -#define PUSB_PWR_PSO_EN BIT(0) -/*Power Shut Off capability disable*/ -#define PUSB_PWR_PSO_DS BIT(1) -/* - * Enables turning-off Reference Clock. - * This bit is optional and implemented only when support for OTG is - * implemented (indicated by OTG_READY bit set to '1'). - */ -#define PUSB_PWR_STB_CLK_SWITCH_EN BIT(8) -/* - * Status bit indicating that operation required by STB_CLK_SWITCH_EN write - * is completed - */ -#define PUSB_PWR_STB_CLK_SWITCH_DONE BIT(9) -/* This bit informs if Fast Registers Access is enabled. */ -#define PUSB_PWR_FST_REG_ACCESS_STAT BIT(30) -/* Fast Registers Access Enable. */ -#define PUSB_PWR_FST_REG_ACCESS BIT(31) - -/* USB_CONF2- bitmasks */ -/* - * Writing 1 disables TDL calculation basing on TRB feature in controller - * for DMULT mode. - * Bit supported only for DEV_VER_V2 version. - */ -#define USB_CONF2_DIS_TDL_TRB BIT(1) -/* - * Writing 1 enables TDL calculation basing on TRB feature in controller - * for DMULT mode. - * Bit supported only for DEV_VER_V2 version. - */ -#define USB_CONF2_EN_TDL_TRB BIT(2) - -/* USB_CAP1- bitmasks */ -/* - * SFR Interface type - * These field reflects type of SFR interface implemented: - * 0x0 - OCP - * 0x1 - AHB, - * 0x2 - PLB - * 0x3 - AXI - * 0x4-0xF - reserved - */ -#define USB_CAP1_SFR_TYPE_MASK GENMASK(3, 0) -#define DEV_SFR_TYPE_OCP(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x0) -#define DEV_SFR_TYPE_AHB(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x1) -#define DEV_SFR_TYPE_PLB(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x2) -#define DEV_SFR_TYPE_AXI(p) (((p) & USB_CAP1_SFR_TYPE_MASK) == 0x3) -/* - * SFR Interface width - * These field reflects width of SFR interface implemented: - * 0x0 - 8 bit interface, - * 0x1 - 16 bit interface, - * 0x2 - 32 bit interface - * 0x3 - 64 bit interface - * 0x4-0xF - reserved - */ -#define USB_CAP1_SFR_WIDTH_MASK GENMASK(7, 4) -#define DEV_SFR_WIDTH_8(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x0 << 4)) -#define DEV_SFR_WIDTH_16(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x1 << 4)) -#define DEV_SFR_WIDTH_32(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x2 << 4)) -#define DEV_SFR_WIDTH_64(p) (((p) & USB_CAP1_SFR_WIDTH_MASK) == (0x3 << 4)) -/* - * DMA Interface type - * These field reflects type of DMA interface implemented: - * 0x0 - OCP - * 0x1 - AHB, - * 0x2 - PLB - * 0x3 - AXI - * 0x4-0xF - reserved - */ -#define USB_CAP1_DMA_TYPE_MASK GENMASK(11, 8) -#define DEV_DMA_TYPE_OCP(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x0 << 8)) -#define DEV_DMA_TYPE_AHB(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x1 << 8)) -#define DEV_DMA_TYPE_PLB(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x2 << 8)) -#define DEV_DMA_TYPE_AXI(p) (((p) & USB_CAP1_DMA_TYPE_MASK) == (0x3 << 8)) -/* - * DMA Interface width - * These field reflects width of DMA interface implemented: - * 0x0 - reserved, - * 0x1 - reserved, - * 0x2 - 32 bit interface - * 0x3 - 64 bit interface - * 0x4-0xF - reserved - */ -#define USB_CAP1_DMA_WIDTH_MASK GENMASK(15, 12) -#define DEV_DMA_WIDTH_32(p) (((p) & USB_CAP1_DMA_WIDTH_MASK) == (0x2 << 12)) -#define DEV_DMA_WIDTH_64(p) (((p) & USB_CAP1_DMA_WIDTH_MASK) == (0x3 << 12)) -/* - * USB3 PHY Interface type - * These field reflects type of USB3 PHY interface implemented: - * 0x0 - USB PIPE, - * 0x1 - RMMI, - * 0x2-0xF - reserved - */ -#define USB_CAP1_U3PHY_TYPE_MASK GENMASK(19, 16) -#define DEV_U3PHY_PIPE(p) (((p) & USB_CAP1_U3PHY_TYPE_MASK) == (0x0 << 16)) -#define DEV_U3PHY_RMMI(p) (((p) & USB_CAP1_U3PHY_TYPE_MASK) == (0x1 << 16)) -/* - * USB3 PHY Interface width - * These field reflects width of USB3 PHY interface implemented: - * 0x0 - 8 bit PIPE interface, - * 0x1 - 16 bit PIPE interface, - * 0x2 - 32 bit PIPE interface, - * 0x3 - 64 bit PIPE interface - * 0x4-0xF - reserved - * Note: When SSIC interface is implemented this field shows the width of - * internal PIPE interface. The RMMI interface is always 20bit wide. - */ -#define USB_CAP1_U3PHY_WIDTH_MASK GENMASK(23, 20) -#define DEV_U3PHY_WIDTH_8(p) \ - (((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x0 << 20)) -#define DEV_U3PHY_WIDTH_16(p) \ - (((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x1 << 16)) -#define DEV_U3PHY_WIDTH_32(p) \ - (((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x2 << 20)) -#define DEV_U3PHY_WIDTH_64(p) \ - (((p) & USB_CAP1_U3PHY_WIDTH_MASK) == (0x3 << 16)) - -/* - * USB2 PHY Interface enable - * These field informs if USB2 PHY interface is implemented: - * 0x0 - interface NOT implemented, - * 0x1 - interface implemented - */ -#define USB_CAP1_U2PHY_EN(p) ((p) & BIT(24)) -/* - * USB2 PHY Interface type - * These field reflects type of USB2 PHY interface implemented: - * 0x0 - UTMI, - * 0x1 - ULPI - */ -#define DEV_U2PHY_ULPI(p) ((p) & BIT(25)) -/* - * USB2 PHY Interface width - * These field reflects width of USB2 PHY interface implemented: - * 0x0 - 8 bit interface, - * 0x1 - 16 bit interface, - * Note: The ULPI interface is always 8bit wide. - */ -#define DEV_U2PHY_WIDTH_16(p) ((p) & BIT(26)) -/* - * OTG Ready - * 0x0 - pure device mode - * 0x1 - some features and ports for CDNS USB OTG controller are implemented. - */ -#define USB_CAP1_OTG_READY(p) ((p) & BIT(27)) - -/* - * When set, indicates that controller supports automatic internal TDL - * calculation basing on the size provided in TRB (TRB[22:17]) for DMULT mode - * Supported only for DEV_VER_V2 controller version. - */ -#define USB_CAP1_TDL_FROM_TRB(p) ((p) & BIT(28)) - -/* USB_CAP2- bitmasks */ -/* - * The actual size of the connected On-chip RAM memory in kB: - * - 0 means 256 kB (max supported mem size) - * - value other than 0 reflects the mem size in kB - */ -#define USB_CAP2_ACTUAL_MEM_SIZE(p) ((p) & GENMASK(7, 0)) -/* - * Max supported mem size - * These field reflects width of on-chip RAM address bus width, - * which determines max supported mem size: - * 0x0-0x7 - reserved, - * 0x8 - support for 4kB mem, - * 0x9 - support for 8kB mem, - * 0xA - support for 16kB mem, - * 0xB - support for 32kB mem, - * 0xC - support for 64kB mem, - * 0xD - support for 128kB mem, - * 0xE - support for 256kB mem, - * 0xF - reserved - */ -#define USB_CAP2_MAX_MEM_SIZE(p) ((p) & GENMASK(11, 8)) - -/* USB_CAP3- bitmasks */ -#define EP_IS_IMPLEMENTED(reg, index) ((reg) & (1 << (index))) - -/* USB_CAP4- bitmasks */ -#define EP_SUPPORT_ISO(reg, index) ((reg) & (1 << (index))) - -/* USB_CAP5- bitmasks */ -#define EP_SUPPORT_STREAM(reg, index) ((reg) & (1 << (index))) - -/* USB_CAP6- bitmasks */ -/* The USBSS-DEV Controller Internal build number. */ -#define GET_DEV_BASE_VERSION(p) ((p) & GENMASK(23, 0)) -/* The USBSS-DEV Controller version number. */ -#define GET_DEV_CUSTOM_VERSION(p) ((p) & GENMASK(31, 24)) - -#define DEV_VER_NXP_V1 0x00024502 -#define DEV_VER_TI_V1 0x00024509 -#define DEV_VER_V2 0x0002450C -#define DEV_VER_V3 0x0002450d - -/* DBG_LINK1- bitmasks */ -/* - * LFPS_MIN_DET_U1_EXIT value This parameter configures the minimum - * time required for decoding the received LFPS as an LFPS.U1_Exit. - */ -#define DBG_LINK1_LFPS_MIN_DET_U1_EXIT(p) ((p) & GENMASK(7, 0)) -/* - * LFPS_MIN_GEN_U1_EXIT value This parameter configures the minimum time for - * phytxelecidle deassertion when LFPS.U1_Exit - */ -#define DBG_LINK1_LFPS_MIN_GEN_U1_EXIT_MASK GENMASK(15, 8) -#define DBG_LINK1_LFPS_MIN_GEN_U1_EXIT(p) (((p) << 8) & GENMASK(15, 8)) -/* - * RXDET_BREAK_DIS value This parameter configures terminating the Far-end - * Receiver termination detection sequence: - * 0: it is possible that USBSS_DEV will terminate Farend receiver - * termination detection sequence - * 1: USBSS_DEV will not terminate Far-end receiver termination - * detection sequence - */ -#define DBG_LINK1_RXDET_BREAK_DIS BIT(16) -/* LFPS_GEN_PING value This parameter configures the LFPS.Ping generation */ -#define DBG_LINK1_LFPS_GEN_PING(p) (((p) << 17) & GENMASK(21, 17)) -/* - * Set the LFPS_MIN_DET_U1_EXIT value Writing '1' to this bit writes the - * LFPS_MIN_DET_U1_EXIT field value to the device. This bit is automatically - * cleared. Writing '0' has no effect - */ -#define DBG_LINK1_LFPS_MIN_DET_U1_EXIT_SET BIT(24) -/* - * Set the LFPS_MIN_GEN_U1_EXIT value. Writing '1' to this bit writes the - * LFPS_MIN_GEN_U1_EXIT field value to the device. This bit is automatically - * cleared. Writing '0' has no effect - */ -#define DBG_LINK1_LFPS_MIN_GEN_U1_EXIT_SET BIT(25) -/* - * Set the RXDET_BREAK_DIS value Writing '1' to this bit writes - * the RXDET_BREAK_DIS field value to the device. This bit is automatically - * cleared. Writing '0' has no effect - */ -#define DBG_LINK1_RXDET_BREAK_DIS_SET BIT(26) -/* - * Set the LFPS_GEN_PING_SET value Writing '1' to this bit writes - * the LFPS_GEN_PING field value to the device. This bit is automatically - * cleared. Writing '0' has no effect." - */ -#define DBG_LINK1_LFPS_GEN_PING_SET BIT(27) - -/* DMA_AXI_CTRL- bitmasks */ -/* The mawprot pin configuration. */ -#define DMA_AXI_CTRL_MARPROT(p) ((p) & GENMASK(2, 0)) -/* The marprot pin configuration. */ -#define DMA_AXI_CTRL_MAWPROT(p) (((p) < 16) & GENMASK(18, 16)) -#define DMA_AXI_CTRL_NON_SECURE 0x02 - -#define gadget_to_cdns3_device(g) (container_of(g, struct cdns3_device, gadget)) - -#define ep_to_cdns3_ep(ep) (container_of(ep, struct cdns3_endpoint, endpoint)) - -/*-------------------------------------------------------------------------*/ -/* - * USBSS-DEV DMA interface. - */ -#define TRBS_PER_SEGMENT 40 - -#define ISO_MAX_INTERVAL 10 - -#if TRBS_PER_SEGMENT < 2 -#error "Incorrect TRBS_PER_SEGMENT. Minimal Transfer Ring size is 2." -#endif - -/* - *Only for ISOC endpoints - maximum number of TRBs is calculated as - * pow(2, bInterval-1) * number of usb requests. It is limitation made by - * driver to save memory. Controller must prepare TRB for each ITP even - * if bInterval > 1. It's the reason why driver needs so many TRBs for - * isochronous endpoints. - */ -#define TRBS_PER_ISOC_SEGMENT (ISO_MAX_INTERVAL * 8) - -#define GET_TRBS_PER_SEGMENT(ep_type) ((ep_type) == USB_ENDPOINT_XFER_ISOC ? \ - TRBS_PER_ISOC_SEGMENT : TRBS_PER_SEGMENT) -/** - * struct cdns3_trb - represent Transfer Descriptor block. - * @buffer: pointer to buffer data - * @length: length of data - * @control: control flags. - * - * This structure describes transfer block serviced by DMA module. - */ -struct cdns3_trb { - __le32 buffer; - __le32 length; - __le32 control; -}; - -#define TRB_SIZE (sizeof(struct cdns3_trb)) -#define TRB_RING_SIZE (TRB_SIZE * TRBS_PER_SEGMENT) -#define TRB_ISO_RING_SIZE (TRB_SIZE * TRBS_PER_ISOC_SEGMENT) -#define TRB_CTRL_RING_SIZE (TRB_SIZE * 2) - -/* TRB bit mask */ -#define TRB_TYPE_BITMASK GENMASK(15, 10) -#define TRB_TYPE(p) ((p) << 10) -#define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10) - -/* TRB type IDs */ -/* bulk, interrupt, isoc , and control data stage */ -#define TRB_NORMAL 1 -/* TRB for linking ring segments */ -#define TRB_LINK 6 - -/* Cycle bit - indicates TRB ownership by driver or hw*/ -#define TRB_CYCLE BIT(0) -/* - * When set to '1', the device will toggle its interpretation of the Cycle bit - */ -#define TRB_TOGGLE BIT(1) - -/* - * Short Packet (SP). OUT EPs at DMULT=1 only. Indicates if the TRB was - * processed while USB short packet was received. No more buffers defined by - * the TD will be used. DMA will automatically advance to next TD. - * - Shall be set to 0 by Software when putting TRB on the Transfer Ring - * - Shall be set to 1 by Controller when Short Packet condition for this TRB - * is detected independent if ISP is set or not. - */ -#define TRB_SP BIT(1) - -/* Interrupt on short packet*/ -#define TRB_ISP BIT(2) -/*Setting this bit enables FIFO DMA operation mode*/ -#define TRB_FIFO_MODE BIT(3) -/* Set PCIe no snoop attribute */ -#define TRB_CHAIN BIT(4) -/* Interrupt on completion */ -#define TRB_IOC BIT(5) - -/* stream ID bitmasks. */ -#define TRB_STREAM_ID(p) ((p) & GENMASK(31, 16)) - -/* Size of TD expressed in USB packets for HS/FS mode. */ -#define TRB_TDL_HS_SIZE(p) (((p) << 16) & GENMASK(31, 16)) -#define TRB_TDL_HS_SIZE_GET(p) (((p) & GENMASK(31, 16)) >> 16) - -/* transfer_len bitmasks. */ -#define TRB_LEN(p) ((p) & GENMASK(16, 0)) - -/* Size of TD expressed in USB packets for SS mode. */ -#define TRB_TDL_SS_SIZE(p) (((p) << 17) & GENMASK(23, 17)) -#define TRB_TDL_SS_SIZE_GET(p) (((p) & GENMASK(23, 17)) >> 17) - -/* transfer_len bitmasks - bits 31:24 */ -#define TRB_BURST_LEN(p) (((p) << 24) & GENMASK(31, 24)) -#define TRB_BURST_LEN_GET(p) (((p) & GENMASK(31, 24)) >> 24) - -/* Data buffer pointer bitmasks*/ -#define TRB_BUFFER(p) ((p) & GENMASK(31, 0)) - -/*-------------------------------------------------------------------------*/ -/* Driver numeric constants */ - -/* Such declaration should be added to ch9.h */ -#define USB_DEVICE_MAX_ADDRESS 127 - -/* Endpoint init values */ -#define CDNS3_EP_MAX_PACKET_LIMIT 1024 -#define CDNS3_EP_MAX_STREAMS 15 -#define CDNS3_EP0_MAX_PACKET_LIMIT 512 - -/* All endpoints including EP0 */ -#define CDNS3_ENDPOINTS_MAX_COUNT 32 -#define CDNS3_EP_ZLP_BUF_SIZE 1024 - -#define CDNS3_EP_BUF_SIZE 2 /* KB */ -#define CDNS3_EP_ISO_HS_MULT 3 -#define CDNS3_EP_ISO_SS_BURST 3 -#define CDNS3_MAX_NUM_DESCMISS_BUF 32 -#define CDNS3_DESCMIS_BUF_SIZE 2048 /* Bytes */ -/*-------------------------------------------------------------------------*/ -/* Used structs */ - -struct cdns3_device; - -/** - * struct cdns3_endpoint - extended device side representation of USB endpoint. - * @endpoint: usb endpoint - * @pending_req_list: list of requests queuing on transfer ring. - * @deferred_req_list: list of requests waiting for queuing on transfer ring. - * @trb_pool: transfer ring - array of transaction buffers - * @trb_pool_dma: dma address of transfer ring - * @cdns3_dev: device associated with this endpoint - * @name: a human readable name e.g. ep1out - * @flags: specify the current state of endpoint - * @dir: endpoint direction - * @num: endpoint number (1 - 15) - * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK - * @interval: interval between packets used for ISOC endpoint. - * @free_trbs: number of free TRBs in transfer ring - * @num_trbs: number of all TRBs in transfer ring - * @pcs: producer cycle state - * @ccs: consumer cycle state - * @enqueue: enqueue index in transfer ring - * @dequeue: dequeue index in transfer ring - * @trb_burst_size: number of burst used in trb. - */ -struct cdns3_endpoint { - struct usb_ep endpoint; - struct list_head pending_req_list; - struct list_head deferred_req_list; - - struct cdns3_trb *trb_pool; - dma_addr_t trb_pool_dma; - - struct cdns3_device *cdns3_dev; - char name[20]; - -#define EP_ENABLED BIT(0) -#define EP_STALL BIT(1) -#define EP_WEDGE BIT(2) -#define EP_TRANSFER_STARTED BIT(3) -#define EP_UPDATE_EP_TRBADDR BIT(4) -#define EP_PENDING_REQUEST BIT(5) -#define EP_RING_FULL BIT(6) -#define EP_CLAIMED BIT(7) -#define EP_DEFERRED_DRDY BIT(8) -#define EP_QUIRK_ISO_OUT_EN BIT(9) - u32 flags; - - u8 dir; - u8 num; - u8 type; - int interval; - - int free_trbs; - int num_trbs; - u8 pcs; - u8 ccs; - int enqueue; - int dequeue; - u8 trb_burst_size; - - unsigned int wa1_set:1; - struct cdns3_trb *wa1_trb; - unsigned int wa1_trb_index; - unsigned int wa1_cycle_bit:1; -}; - -/** - * struct cdns3_aligned_buf - represent aligned buffer used for DMA transfer - * @buf: aligned to 8 bytes data buffer. Buffer address used in - * TRB shall be aligned to 8. - * @dma: dma address - * @size: size of buffer - * @in_use: inform if this buffer is associated with usb_request - * @list: used to adding instance of this object to list - */ -struct cdns3_aligned_buf { - void *buf; - dma_addr_t dma; - u32 size; - int in_use:1; - struct list_head list; -}; - -/** - * struct cdns3_request - extended device side representation of usb_request - * object . - * @request: generic usb_request object describing single I/O request. - * @priv_ep: extended representation of usb_ep object - * @trb: the first TRB association with this request - * @start_trb: number of the first TRB in transfer ring - * @end_trb: number of the last TRB in transfer ring - * @aligned_buf: object holds information about aligned buffer associated whit - * this endpoint - * @flags: flag specifying special usage of request - */ -struct cdns3_request { - struct usb_request request; - struct cdns3_endpoint *priv_ep; - struct cdns3_trb *trb; - int start_trb; - int end_trb; - struct cdns3_aligned_buf *aligned_buf; -#define REQUEST_PENDING BIT(0) -#define REQUEST_INTERNAL BIT(1) -#define REQUEST_INTERNAL_CH BIT(2) -#define REQUEST_ZLP BIT(3) -#define REQUEST_UNALIGNED BIT(4) - u32 flags; - struct list_head list; -}; - -#define to_cdns3_request(r) (container_of(r, struct cdns3_request, request)) - -/*Stages used during enumeration process.*/ -#define CDNS3_SETUP_STAGE 0x0 -#define CDNS3_DATA_STAGE 0x1 -#define CDNS3_STATUS_STAGE 0x2 - -/** - * struct cdns3_device - represent USB device. - * @dev: pointer to device structure associated whit this controller - * @sysdev: pointer to the DMA capable device - * @gadget: device side representation of the peripheral controller - * @gadget_driver: pointer to the gadget driver - * @dev_ver: device controller version. - * @lock: for synchronizing - * @regs: base address for device side registers - * @setup_buf: used while processing usb control requests - * @setup_dma: dma address for setup_buf - * @zlp_buf - zlp buffer - * @ep0_stage: ep0 stage during enumeration process. - * @ep0_data_dir: direction for control transfer - * @eps: array of pointers to all endpoints with exclusion ep0 - * @aligned_buf_list: list of aligned buffers internally allocated by driver - * @run_garbage_colector: infroms that at least one element of aligned_buf_list - * can be freed - * @selected_ep: actually selected endpoint. It's used only to improve - * performance. - * @isoch_delay: value from Set Isoch Delay request. Only valid on SS/SSP. - * @u1_allowed: allow device transition to u1 state - * @u2_allowed: allow device transition to u2 state - * @is_selfpowered: device is self powered - * @setup_pending: setup packet is processing by gadget driver - * @hw_configured_flag: hardware endpoint configuration was set. - * @wake_up_flag: allow device to remote up the host - * @status_completion_no_call: indicate that driver is waiting for status s - * stage completion. It's used in deferred SET_CONFIGURATION request. - * @onchip_buffers: number of available on-chip buffers. - * @onchip_used_size: actual size of on-chip memory assigned to endpoints. - * @pending_status_wq: workqueue handling status stage for deferred requests. - * @shadow_ep_en: hold information about endpoints that will be enabled - * in soft irq. - * @pending_status_request: request for which status stage was deferred - */ -struct cdns3_device { - struct device *dev; - struct device *sysdev; - - struct usb_gadget gadget; - struct usb_gadget_driver *gadget_driver; - -#define CDNS_REVISION_V0 0x00024501 -#define CDNS_REVISION_V1 0x00024509 - u32 dev_ver; - - /* generic spin-lock for drivers */ - spinlock_t lock; - - struct cdns3_usb_regs __iomem *regs; - - struct usb_ctrlrequest *setup_buf; - dma_addr_t setup_dma; - void *zlp_buf; - - u8 ep0_stage; - int ep0_data_dir; - - struct cdns3_endpoint *eps[CDNS3_ENDPOINTS_MAX_COUNT]; - - struct list_head aligned_buf_list; - unsigned run_garbage_colector:1; - - u32 selected_ep; - u16 isoch_delay; - - unsigned wait_for_setup:1; - unsigned u1_allowed:1; - unsigned u2_allowed:1; - unsigned is_selfpowered:1; - unsigned setup_pending:1; - int hw_configured_flag:1; - int wake_up_flag:1; - unsigned status_completion_no_call:1; - int out_mem_is_allocated; - - struct work_struct pending_status_wq; - struct usb_request *pending_status_request; - u32 shadow_ep_en; - /*in KB */ - u16 onchip_buffers; - u16 onchip_used_size; -}; - -void cdns3_set_register_bit(void __iomem *ptr, u32 mask); -dma_addr_t cdns3_trb_virt_to_dma(struct cdns3_endpoint *priv_ep, - struct cdns3_trb *trb); -enum usb_device_speed cdns3_get_speed(struct cdns3_device *priv_dev); -void cdns3_pending_setup_status_handler(struct work_struct *work); -void cdns3_hw_reset_eps_config(struct cdns3_device *priv_dev); -void cdns3_set_hw_configuration(struct cdns3_device *priv_dev); -void cdns3_select_ep(struct cdns3_device *priv_dev, u32 ep); -void cdns3_allow_enable_l1(struct cdns3_device *priv_dev, int enable); -struct usb_request *cdns3_next_request(struct list_head *list); -int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, - struct usb_request *request); -void cdns3_rearm_transfer(struct cdns3_endpoint *priv_ep, u8 rearm); -int cdns3_allocate_trb_pool(struct cdns3_endpoint *priv_ep); -u8 cdns3_ep_addr_to_index(u8 ep_addr); -int cdns3_gadget_ep_set_wedge(struct usb_ep *ep); -int cdns3_gadget_ep_set_halt(struct usb_ep *ep, int value); -struct usb_request *cdns3_gadget_ep_alloc_request(struct usb_ep *ep, - gfp_t gfp_flags); -void cdns3_gadget_ep_free_request(struct usb_ep *ep, - struct usb_request *request); -int cdns3_gadget_ep_dequeue(struct usb_ep *ep, struct usb_request *request); -void cdns3_gadget_giveback(struct cdns3_endpoint *priv_ep, - struct cdns3_request *priv_req, - int status); - -int cdns3_init_ep0(struct cdns3_device *priv_dev, - struct cdns3_endpoint *priv_ep); -void cdns3_ep0_config(struct cdns3_device *priv_dev); -void cdns3_ep_config(struct cdns3_endpoint *priv_ep); -void cdns3_check_ep0_interrupt_proceed(struct cdns3_device *priv_dev, int dir); -int __cdns3_gadget_wakeup(struct cdns3_device *priv_dev); - -#endif /* __LINUX_CDNS3_GADGET */ diff --git a/drivers/usb/cdns3/host-export.h b/drivers/usb/cdns3/host-export.h deleted file mode 100644 index b498a170b7e8..000000000000 --- a/drivers/usb/cdns3/host-export.h +++ /dev/null @@ -1,28 +0,0 @@ -/* 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 */ diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c deleted file mode 100644 index df41ba7c6726..000000000000 --- a/drivers/usb/cdns3/host.c +++ /dev/null @@ -1,76 +0,0 @@ -// 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; -} diff --git a/drivers/usb/cdns3/trace.c b/drivers/usb/cdns3/trace.c deleted file mode 100644 index 9431eb86d4ff..000000000000 --- a/drivers/usb/cdns3/trace.c +++ /dev/null @@ -1,23 +0,0 @@ -// 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); -} diff --git a/drivers/usb/cdns3/trace.h b/drivers/usb/cdns3/trace.h deleted file mode 100644 index 1cc2abca320c..000000000000 --- a/drivers/usb/cdns3/trace.h +++ /dev/null @@ -1,447 +0,0 @@ -/* 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> |