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308 lines
7.3 KiB
Diff
308 lines
7.3 KiB
Diff
--- a/drivers/usb/host/Kconfig
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+++ b/drivers/usb/host/Kconfig
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@@ -96,6 +96,19 @@ config USB_EHCI_HCD_PPC_OF
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Enables support for the USB controller present on the PowerPC
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OpenFirmware platform bus.
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+config USB_EHCI_HCD_SSB
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+ bool "EHCI support for Broadcom SSB EHCI core"
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+ depends on USB_EHCI_HCD && SSB && EXPERIMENTAL
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+ default n
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+ ---help---
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+ Support for the Sonics Silicon Backplane (SSB) attached
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+ Broadcom USB EHCI core.
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+
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+ This device is present in some embedded devices with
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+ Broadcom based SSB bus.
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+
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+ If unsure, say N.
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+
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config USB_ISP116X_HCD
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tristate "ISP116X HCD support"
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depends on USB
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--- a/drivers/usb/host/ehci-hcd.c
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+++ b/drivers/usb/host/ehci-hcd.c
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@@ -1034,8 +1034,16 @@ MODULE_LICENSE ("GPL");
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#define PLATFORM_DRIVER ixp4xx_ehci_driver
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#endif
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-#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
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- !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER)
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+#ifdef CONFIG_USB_EHCI_HCD_SSB
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+#include "ehci-ssb.c"
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+#define SSB_EHCI_DRIVER ssb_ehci_driver
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+#endif
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+
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+#if !defined(PCI_DRIVER) && \
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+ !defined(PLATFORM_DRIVER) && \
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+ !defined(PS3_SYSTEM_BUS_DRIVER) && \
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+ !defined(OF_PLATFORM_DRIVER) && \
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+ !defined(SSB_EHCI_DRIVER)
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#error "missing bus glue for ehci-hcd"
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#endif
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--- /dev/null
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+++ b/drivers/usb/host/ehci-ssb.c
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@@ -0,0 +1,201 @@
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+/*
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+ * Sonics Silicon Backplane
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+ * Broadcom USB-core EHCI driver (SSB bus glue)
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+ *
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+ * Copyright 2007 Steven Brown <sbrown@cortland.com>
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+ *
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+ * Derived from the OHCI-SSB driver
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+ * Copyright 2007 Michael Buesch <mb@bu3sch.de>
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+ *
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+ * Derived from the EHCI-PCI driver
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+ * Copyright (c) 2000-2004 by David Brownell
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+ *
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+ * Derived from the OHCI-PCI driver
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+ * Copyright 1999 Roman Weissgaerber
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+ * Copyright 2000-2002 David Brownell
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+ * Copyright 1999 Linus Torvalds
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+ * Copyright 1999 Gregory P. Smith
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+ *
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+ * Derived from the USBcore related parts of Broadcom-SB
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+ * Copyright 2005 Broadcom Corporation
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+ *
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+ * Licensed under the GNU/GPL. See COPYING for details.
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+ */
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+#include <linux/ssb/ssb.h>
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+
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+#define SSB_OHCI_TMSLOW_HOSTMODE (1 << 29)
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+
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+struct ssb_ehci_device {
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+ struct ehci_hcd ehci; /* _must_ be at the beginning. */
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+
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+ u32 enable_flags;
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+};
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+
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+static inline
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+struct ssb_ehci_device *hcd_to_ssb_ehci(struct usb_hcd *hcd)
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+{
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+ return (struct ssb_ehci_device *)(hcd->hcd_priv);
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+}
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+
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+
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+static int ssb_ehci_reset(struct usb_hcd *hcd)
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+{
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+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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+ int err;
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+
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+ ehci->caps = hcd->regs;
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+ ehci->regs = hcd->regs +
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+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
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+
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+ dbg_hcs_params(ehci, "reset");
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+ dbg_hcc_params(ehci, "reset");
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+
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+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
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+
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+ err = ehci_halt(ehci);
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+
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+ if (err)
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+ return err;
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+
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+ err = ehci_init(hcd);
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+
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+ if (err)
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+ return err;
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+
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+ ehci_port_power(ehci, 0);
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+
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+ return err;
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+}
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+
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+static int ssb_ehci_start(struct usb_hcd *hcd)
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+{
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+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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+ int err;
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+
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+ err = ehci_run(hcd);
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+ if (err < 0) {
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+ ehci_err(ehci, "can't start\n");
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+ ehci_stop(hcd);
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+ }
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+
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+ return err;
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+}
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+
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+#ifdef CONFIG_PM
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+static int ssb_ehci_hcd_suspend(struct usb_hcd *hcd, pm_message_t message)
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+{
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+ struct ssb_ehci_device *ehcidev = hcd_to_ssb_ehci(hcd);
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+ struct ehci_hcd *ehci = &ehcidev->ehci;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&ehci->lock, flags);
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+
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+ ehci_writel(ehci, EHCI_INTR_MIE, &ehci->regs->intrdisable);
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+ ehci_readl(ehci, &ehci->regs->intrdisable); /* commit write */
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+
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+ /* make sure snapshot being resumed re-enumerates everything */
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+ if (message.event == PM_EVENT_PRETHAW)
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+ ehci_usb_reset(ehci);
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+
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+ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
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+
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+ spin_unlock_irqrestore(&ehci->lock, flags);
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+ return 0;
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+}
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+
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+static int ssb_ehci_hcd_resume(struct usb_hcd *hcd)
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+{
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+ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
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+ usb_hcd_resume_root_hub(hcd);
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+ return 0;
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+}
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+#endif /* CONFIG_PM */
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+
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+static const struct hc_driver ssb_ehci_hc_driver = {
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+ .description = "ssb-usb-ehci",
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+ .product_desc = "SSB EHCI Controller",
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+ .hcd_priv_size = sizeof(struct ssb_ehci_device),
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+
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+ .irq = ehci_irq,
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+ .flags = HCD_MEMORY | HCD_USB2,
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+
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+ .reset = ssb_ehci_reset,
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+ .start = ssb_ehci_start,
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+ .stop = ehci_stop,
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+ .shutdown = ehci_shutdown,
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+
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+#ifdef CONFIG_PM
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+ .suspend = ssb_ehci_hcd_suspend,
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+ .resume = ssb_ehci_hcd_resume,
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+#endif
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+
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+ .urb_enqueue = ehci_urb_enqueue,
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+ .urb_dequeue = ehci_urb_dequeue,
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+ .endpoint_disable = ehci_endpoint_disable,
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+
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+ .get_frame_number = ehci_get_frame,
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+
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+ .hub_status_data = ehci_hub_status_data,
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+ .hub_control = ehci_hub_control,
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+#ifdef CONFIG_PM
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+ .bus_suspend = ehci_bus_suspend,
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+ .bus_resume = ehci_bus_resume,
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+#endif
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+
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+};
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+
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+static void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd)
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+{
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+
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+ usb_remove_hcd(hcd);
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+ iounmap(hcd->regs);
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+ usb_put_hcd(hcd);
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+}
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+EXPORT_SYMBOL_GPL(ssb_ehci_detach);
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+
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+static int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **ehci_hcd)
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+{
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+ struct ssb_ehci_device *ehcidev;
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+ struct usb_hcd *hcd;
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+ int err = -ENOMEM;
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+ u32 tmp, flags = 0;
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+
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+ hcd = usb_create_hcd(&ssb_ehci_hc_driver, dev->dev,
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+ dev->dev->bus_id);
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+ if (!hcd)
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+ goto err_dev_disable;
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+
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+ ehcidev = hcd_to_ssb_ehci(hcd);
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+ ehcidev->enable_flags = flags;
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+ tmp = ssb_read32(dev, SSB_ADMATCH0);
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+ hcd->rsrc_start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
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+ hcd->rsrc_len = 0x100; /* ehci reg block size */
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+ /*
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+ * start & size modified per sbutils.c
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+ */
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+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
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+ if (!hcd->regs)
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+ goto err_put_hcd;
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+ err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED | IRQF_DISABLED);
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+ if (err)
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+ goto err_iounmap;
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+
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+ *ehci_hcd = hcd;
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+
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+ return err;
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+
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+err_iounmap:
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+ iounmap(hcd->regs);
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+err_put_hcd:
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+ usb_put_hcd(hcd);
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+err_dev_disable:
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+ ssb_device_disable(dev, flags);
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+ return err;
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+}
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+EXPORT_SYMBOL_GPL(ssb_ehci_attach);
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+
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+static const struct ssb_device_id ssb_ehci_table[] = {
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+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
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+ SSB_DEVTABLE_END
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+};
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+MODULE_DEVICE_TABLE(ssb, ssb_ehci_table);
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--- a/drivers/usb/host/ohci-ssb.c
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+++ b/drivers/usb/host/ohci-ssb.c
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@@ -17,6 +17,8 @@
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*/
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#include <linux/ssb/ssb.h>
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+extern int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **hcd);
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+extern void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd);
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#define SSB_OHCI_TMSLOW_HOSTMODE (1 << 29)
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@@ -24,6 +26,7 @@ struct ssb_ohci_device {
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struct ohci_hcd ohci; /* _must_ be at the beginning. */
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u32 enable_flags;
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+ struct usb_hcd *ehci_hcd;
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};
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static inline
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@@ -92,13 +95,25 @@ static const struct hc_driver ssb_ohci_h
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static void ssb_ohci_detach(struct ssb_device *dev)
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{
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struct usb_hcd *hcd = ssb_get_drvdata(dev);
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+#ifdef CONFIG_USB_EHCI_HCD_SSB
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+ struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
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+#endif
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usb_remove_hcd(hcd);
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iounmap(hcd->regs);
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usb_put_hcd(hcd);
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+
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+#ifdef CONFIG_USB_EHCI_HCD_SSB
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+ /*
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+ * Also detach ehci function
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+ */
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+ if (dev->id.coreid == SSB_DEV_USB20_HOST)
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+ ssb_ehci_detach(dev, ohcidev->ehci_hcd);
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+#endif
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ssb_device_disable(dev, 0);
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}
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+
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static int ssb_ohci_attach(struct ssb_device *dev)
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{
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struct ssb_ohci_device *ohcidev;
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@@ -184,6 +199,14 @@ static int ssb_ohci_attach(struct ssb_de
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ssb_set_drvdata(dev, hcd);
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+#ifdef CONFIG_USB_EHCI_HCD_SSB
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+ /*
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+ * attach ehci function in this core
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+ */
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+ if (dev->id.coreid == SSB_DEV_USB20_HOST)
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+ err = ssb_ehci_attach(dev, &(ohcidev->ehci_hcd));
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+#endif
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+
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return err;
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err_iounmap:
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