From: Bharat Kumar Reddy Gooty bharat.gooty@broadcom.com
Base driver for Broadcom xHCI controllers
Signed-off-by: Bharat Kumar Reddy Gooty bharat.gooty@broadcom.com Signed-off-by: Vladimir Olovyannikov vladimir.olovyannikov@broadcom.com --- drivers/usb/host/Kconfig | 8 +++ drivers/usb/host/Makefile | 1 + drivers/usb/host/xhci-brcm.c | 103 +++++++++++++++++++++++++++++++++++ 3 files changed, 112 insertions(+) create mode 100644 drivers/usb/host/xhci-brcm.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 0987ff25b1..94ac969058 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -88,6 +88,14 @@ config USB_XHCI_FSL depends on !SPL_NO_USB help Enables support for the on-chip xHCI controller on NXP Layerscape SoCs. + +config USB_XHCI_BRCM + bool "Broadcom USB3 Host XHCI controller" + depends on DM_USB + help + USB controller based on the Broadcom USB3 IP Core. + Supports USB2/3 functionality. + endif # USB_XHCI_HCD
config USB_EHCI_HCD diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 7feeff679c..b62f346094 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -44,6 +44,7 @@ obj-$(CONFIG_USB_EHCI_RMOBILE) += ehci-rmobile.o obj-$(CONFIG_USB_EHCI_ZYNQ) += ehci-zynq.o
# xhci +obj-$(CONFIG_USB_XHCI_BRCM) += xhci-brcm.o obj-$(CONFIG_USB_XHCI_HCD) += xhci.o xhci-mem.o xhci-ring.o obj-$(CONFIG_USB_XHCI_DWC3) += xhci-dwc3.o obj-$(CONFIG_USB_XHCI_DWC3_OF_SIMPLE) += dwc3-of-simple.o diff --git a/drivers/usb/host/xhci-brcm.c b/drivers/usb/host/xhci-brcm.c new file mode 100644 index 0000000000..84ec95f804 --- /dev/null +++ b/drivers/usb/host/xhci-brcm.c @@ -0,0 +1,103 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2019 Broadcom. + */ + +#include <common.h> +#include <dm.h> +#include <fdtdec.h> +#include <usb.h> +#include <asm/io.h> +#include "xhci.h" + +#define DRD2U3H_XHC_REGS_AXIWRA 0xC08 +#define DRD2U3H_XHC_REGS_AXIRDA 0xC0C + +#define USBAXI_AWCACHE 0xF +#define USBAXI_ARCACHE 0xF +#define USBAXI_AWPROT 0x8 +#define USBAXI_ARPROT 0x8 +#define USBAXIWR_SA_VAL ((USBAXI_AWCACHE << 4 | USBAXI_AWPROT) << 0) +#define USBAXIWR_SA_MASK (0xff) +#define USBAXIWR_UA_VAL ((USBAXI_AWCACHE << 4 | USBAXI_AWPROT) << 16) +#define USBAXIWR_UA_MASK ((0xff) << 16) +#define USBAXIRD_SA_VAL ((USBAXI_ARCACHE << 4 | USBAXI_ARPROT) << 0) +#define USBAXIRD_SA_MASK (0xff) +#define USBAXIRD_UA_VAL ((USBAXI_ARCACHE << 4 | USBAXI_ARPROT) << 16) +#define USBAXIRD_UA_MASK ((0xff) << 16) + +struct brcm_xhci_platdata { + unsigned int arcache; + unsigned int awcache; +}; + +static int xhci_brcm_probe(struct udevice *dev) +{ + struct xhci_hccr *hcd; + struct xhci_hcor *hcor; + struct brcm_xhci_platdata *plat = dev_get_platdata(dev); + int len, ret = 0; + + if (!plat) { + dev_err(dev, "Can't get xHCI Plat data\n"); + return -ENOMEM; + } + + hcd = dev_read_addr_ptr(dev); + if (!hcd) { + dev_err(dev, "Can't get the xHCI register base address\n"); + return -ENXIO; + } + + len = HC_LENGTH(xhci_readl(&(hcd)->cr_capbase)); + hcor = (struct xhci_hcor *)((uintptr_t)hcd + len); + + /* Save the default values of AXI read and write attributes */ + plat->awcache = readl((uintptr_t)hcd + DRD2U3H_XHC_REGS_AXIWRA); + plat->arcache = readl((uintptr_t)hcd + DRD2U3H_XHC_REGS_AXIRDA); + + /* Enable AXI read and write attributes. */ + clrsetbits_le32(((uintptr_t)hcd + DRD2U3H_XHC_REGS_AXIWRA), + (USBAXIWR_UA_MASK | USBAXIWR_SA_MASK), + (USBAXIWR_UA_VAL | USBAXIWR_SA_VAL)); + clrsetbits_le32(((uintptr_t)hcd + DRD2U3H_XHC_REGS_AXIRDA), + (USBAXIRD_UA_MASK | USBAXIRD_SA_MASK), + (USBAXIRD_UA_VAL | USBAXIRD_SA_VAL)); + + ret = xhci_register(dev, hcd, hcor); + if (ret) + dev_err(dev, "Failed to register xHCI\n"); + + return ret; +} + +static int xhci_brcm_deregister(struct udevice *dev) +{ + struct xhci_hccr *hcd; + struct brcm_xhci_platdata *plat = dev_get_platdata(dev); + + hcd = (struct xhci_hccr *)((uintptr_t)dev_read_addr(dev)); + + /* Restore the default values for AXI read and write attributes */ + writel(plat->awcache, ((uintptr_t)hcd + DRD2U3H_XHC_REGS_AXIWRA)); + writel(plat->arcache, ((uintptr_t)hcd + DRD2U3H_XHC_REGS_AXIRDA)); + + return xhci_deregister(dev); +} + +static const struct udevice_id xhci_brcm_ids[] = { + { .compatible = "brcm,generic-xhci" }, + { } +}; + +U_BOOT_DRIVER(usb_xhci) = { + .name = "xhci_brcm", + .id = UCLASS_USB, + .probe = xhci_brcm_probe, + .remove = xhci_brcm_deregister, + .ops = &xhci_usb_ops, + .of_match = xhci_brcm_ids, + .platdata_auto_alloc_size = sizeof(struct brcm_xhci_platdata), + .priv_auto_alloc_size = sizeof(struct xhci_ctrl), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +};