mirror of https://github.com/hak5/openwrt-owl.git
309 lines
8.0 KiB
Diff
309 lines
8.0 KiB
Diff
|
|
--- a/drivers/usb/host/Kconfig
|
|
+++ b/drivers/usb/host/Kconfig
|
|
@@ -645,3 +645,15 @@ config USB_HCD_BCMA
|
|
for ehci and ohci.
|
|
|
|
If unsure, say N.
|
|
+
|
|
+config USB_HCD_SSB
|
|
+ tristate "SSB usb host driver"
|
|
+ depends on SSB && EXPERIMENTAL
|
|
+ select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
|
|
+ select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
|
|
+ help
|
|
+ Enbale support for the EHCI and OCHI host controller on an bcma bus.
|
|
+ It converts the bcma driver into two platform device drivers
|
|
+ for ehci and ohci.
|
|
+
|
|
+ If unsure, say N.
|
|
--- a/drivers/usb/host/Makefile
|
|
+++ b/drivers/usb/host/Makefile
|
|
@@ -38,3 +38,4 @@ obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-m
|
|
obj-$(CONFIG_USB_OCTEON2_COMMON) += octeon2-common.o
|
|
obj-$(CONFIG_MIPS_ALCHEMY) += alchemy-common.o
|
|
obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
|
|
+obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
|
|
--- /dev/null
|
|
+++ b/drivers/usb/host/ssb-hcd.c
|
|
@@ -0,0 +1,279 @@
|
|
+/*
|
|
+ * Sonics Silicon Backplane
|
|
+ * Broadcom USB-core driver (SSB bus glue)
|
|
+ *
|
|
+ * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
|
|
+ *
|
|
+ * Based on ssb-ohci driver
|
|
+ * Copyright 2007 Michael Buesch <m@bues.ch>
|
|
+ *
|
|
+ * Derived from the OHCI-PCI driver
|
|
+ * Copyright 1999 Roman Weissgaerber
|
|
+ * Copyright 2000-2002 David Brownell
|
|
+ * Copyright 1999 Linus Torvalds
|
|
+ * Copyright 1999 Gregory P. Smith
|
|
+ *
|
|
+ * Derived from the USBcore related parts of Broadcom-SB
|
|
+ * Copyright 2005-2011 Broadcom Corporation
|
|
+ *
|
|
+ * Licensed under the GNU/GPL. See COPYING for details.
|
|
+ */
|
|
+#include <linux/ssb/ssb.h>
|
|
+#include <linux/delay.h>
|
|
+#include <linux/platform_device.h>
|
|
+#include <linux/module.h>
|
|
+#include <linux/usb/ehci_pdriver.h>
|
|
+#include <linux/usb/ohci_pdriver.h>
|
|
+
|
|
+MODULE_AUTHOR("Hauke Mehrtens");
|
|
+MODULE_DESCRIPTION("Common USB driver for SSB Bus");
|
|
+MODULE_LICENSE("GPL");
|
|
+
|
|
+#define SSB_HCD_TMSLOW_HOSTMODE (1 << 29)
|
|
+
|
|
+struct ssb_hcd_device {
|
|
+ struct platform_device *ehci_dev;
|
|
+ struct platform_device *ohci_dev;
|
|
+
|
|
+ u32 enable_flags;
|
|
+};
|
|
+
|
|
+static void __devinit ssb_hcd_5354wa(struct ssb_device *dev)
|
|
+{
|
|
+#ifdef CONFIG_SSB_DRIVER_MIPS
|
|
+ /* Work around for 5354 failures */
|
|
+ if (dev->id.revision == 2 && dev->bus->chip_id == 0x5354) {
|
|
+ /* Change syn01 reg */
|
|
+ ssb_write32(dev, 0x894, 0x00fe00fe);
|
|
+
|
|
+ /* Change syn03 reg */
|
|
+ ssb_write32(dev, 0x89c, ssb_read32(dev, 0x89c) | 0x1);
|
|
+ }
|
|
+#endif
|
|
+}
|
|
+
|
|
+static void __devinit ssb_hcd_usb20wa(struct ssb_device *dev)
|
|
+{
|
|
+ if (dev->id.coreid == SSB_DEV_USB20_HOST) {
|
|
+ /*
|
|
+ * USB 2.0 special considerations:
|
|
+ *
|
|
+ * In addition to the standard SSB reset sequence, the Host
|
|
+ * Control Register must be programmed to bring the USB core
|
|
+ * and various phy components out of reset.
|
|
+ */
|
|
+ ssb_write32(dev, 0x200, 0x7ff);
|
|
+
|
|
+ /* Change Flush control reg */
|
|
+ ssb_write32(dev, 0x400, ssb_read32(dev, 0x400) & ~8);
|
|
+ ssb_read32(dev, 0x400);
|
|
+
|
|
+ /* Change Shim control reg */
|
|
+ ssb_write32(dev, 0x304, ssb_read32(dev, 0x304) & ~0x100);
|
|
+ ssb_read32(dev, 0x304);
|
|
+
|
|
+ udelay(1);
|
|
+
|
|
+ ssb_hcd_5354wa(dev);
|
|
+ }
|
|
+}
|
|
+
|
|
+/* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
|
|
+static u32 __devinit ssb_hcd_init_chip(struct ssb_device *dev)
|
|
+{
|
|
+ u32 flags = 0;
|
|
+
|
|
+ if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV)
|
|
+ /* Put the device into host-mode. */
|
|
+ flags |= SSB_HCD_TMSLOW_HOSTMODE;
|
|
+
|
|
+ ssb_device_enable(dev, flags);
|
|
+
|
|
+ ssb_hcd_usb20wa(dev);
|
|
+
|
|
+ return flags;
|
|
+}
|
|
+
|
|
+static const struct usb_ehci_pdata ehci_pdata = {
|
|
+};
|
|
+
|
|
+static const struct usb_ohci_pdata ohci_pdata = {
|
|
+};
|
|
+
|
|
+static struct platform_device * __devinit
|
|
+ssb_hcd_create_pdev(struct ssb_device *dev, bool ohci, u32 addr, u32 len)
|
|
+{
|
|
+ struct platform_device *hci_dev;
|
|
+ struct resource hci_res[2];
|
|
+ int ret = -ENOMEM;
|
|
+
|
|
+ memset(hci_res, 0, sizeof(hci_res));
|
|
+
|
|
+ hci_res[0].start = addr;
|
|
+ hci_res[0].end = hci_res[0].start + len - 1;
|
|
+ hci_res[0].flags = IORESOURCE_MEM;
|
|
+
|
|
+ hci_res[1].start = dev->irq;
|
|
+ hci_res[1].flags = IORESOURCE_IRQ;
|
|
+
|
|
+ hci_dev = platform_device_alloc(ohci ? "ohci-platform" :
|
|
+ "ehci-platform" , 0);
|
|
+ if (!hci_dev)
|
|
+ return NULL;
|
|
+
|
|
+ hci_dev->dev.parent = dev->dev;
|
|
+ hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
|
|
+
|
|
+ ret = platform_device_add_resources(hci_dev, hci_res,
|
|
+ ARRAY_SIZE(hci_res));
|
|
+ if (ret)
|
|
+ goto err_alloc;
|
|
+ if (ohci)
|
|
+ ret = platform_device_add_data(hci_dev, &ohci_pdata,
|
|
+ sizeof(ohci_pdata));
|
|
+ else
|
|
+ ret = platform_device_add_data(hci_dev, &ehci_pdata,
|
|
+ sizeof(ehci_pdata));
|
|
+ if (ret)
|
|
+ goto err_alloc;
|
|
+ ret = platform_device_add(hci_dev);
|
|
+ if (ret)
|
|
+ goto err_alloc;
|
|
+
|
|
+ return hci_dev;
|
|
+
|
|
+err_alloc:
|
|
+ platform_device_put(hci_dev);
|
|
+ return ERR_PTR(ret);
|
|
+}
|
|
+
|
|
+static int __devinit ssb_hcd_probe(struct ssb_device *dev,
|
|
+ const struct ssb_device_id *id)
|
|
+{
|
|
+ int err, tmp;
|
|
+ int start, len;
|
|
+ u16 chipid_top;
|
|
+ u16 coreid = dev->id.coreid;
|
|
+ struct ssb_hcd_device *usb_dev;
|
|
+
|
|
+ /* USBcores are only connected on embedded devices. */
|
|
+ chipid_top = (dev->bus->chip_id & 0xFF00);
|
|
+ if (chipid_top != 0x4700 && chipid_top != 0x5300)
|
|
+ return -ENODEV;
|
|
+
|
|
+ /* TODO: Probably need checks here; is the core connected? */
|
|
+
|
|
+ if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
|
|
+ dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
|
|
+ return -EOPNOTSUPP;
|
|
+
|
|
+ usb_dev = kzalloc(sizeof(struct ssb_hcd_device), GFP_KERNEL);
|
|
+ if (!usb_dev)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ /* We currently always attach SSB_DEV_USB11_HOSTDEV
|
|
+ * as HOST OHCI. If we want to attach it as Client device,
|
|
+ * we must branch here and call into the (yet to
|
|
+ * be written) Client mode driver. Same for remove(). */
|
|
+ usb_dev->enable_flags = ssb_hcd_init_chip(dev);
|
|
+
|
|
+ tmp = ssb_read32(dev, SSB_ADMATCH0);
|
|
+
|
|
+ start = ssb_admatch_base(tmp);
|
|
+ len = (coreid == SSB_DEV_USB20_HOST) ? 0x800 : ssb_admatch_size(tmp);
|
|
+ usb_dev->ohci_dev = ssb_hcd_create_pdev(dev, true, start, len);
|
|
+ if (IS_ERR(usb_dev->ohci_dev)) {
|
|
+ err = PTR_ERR(usb_dev->ohci_dev);
|
|
+ goto err_free_usb_dev;
|
|
+ }
|
|
+
|
|
+ if (coreid == SSB_DEV_USB20_HOST) {
|
|
+ start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
|
|
+ usb_dev->ehci_dev = ssb_hcd_create_pdev(dev, false, start, len);
|
|
+ if (IS_ERR(usb_dev->ehci_dev)) {
|
|
+ err = PTR_ERR(usb_dev->ehci_dev);
|
|
+ goto err_unregister_ohci_dev;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ ssb_set_drvdata(dev, usb_dev);
|
|
+ return 0;
|
|
+
|
|
+err_unregister_ohci_dev:
|
|
+ platform_device_unregister(usb_dev->ohci_dev);
|
|
+err_free_usb_dev:
|
|
+ kfree(usb_dev);
|
|
+ return err;
|
|
+}
|
|
+
|
|
+static void __devexit ssb_hcd_remove(struct ssb_device *dev)
|
|
+{
|
|
+ struct ssb_hcd_device *usb_dev = ssb_get_drvdata(dev);
|
|
+ struct platform_device *ohci_dev = usb_dev->ohci_dev;
|
|
+ struct platform_device *ehci_dev = usb_dev->ehci_dev;
|
|
+
|
|
+ if (ohci_dev)
|
|
+ platform_device_unregister(ohci_dev);
|
|
+ if (ehci_dev)
|
|
+ platform_device_unregister(ehci_dev);
|
|
+
|
|
+ ssb_device_disable(dev, 0);
|
|
+}
|
|
+
|
|
+static void __devexit ssb_hcd_shutdown(struct ssb_device *dev)
|
|
+{
|
|
+ ssb_device_disable(dev, 0);
|
|
+}
|
|
+
|
|
+#ifdef CONFIG_PM
|
|
+
|
|
+static int ssb_hcd_suspend(struct ssb_device *dev, pm_message_t state)
|
|
+{
|
|
+ ssb_device_disable(dev, 0);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int ssb_hcd_resume(struct ssb_device *dev)
|
|
+{
|
|
+ struct ssb_hcd_device *usb_dev = ssb_get_drvdata(dev);
|
|
+
|
|
+ ssb_device_enable(dev, usb_dev->enable_flags);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#else /* !CONFIG_PM */
|
|
+#define ssb_hcd_suspend NULL
|
|
+#define ssb_hcd_resume NULL
|
|
+#endif /* CONFIG_PM */
|
|
+
|
|
+static const struct ssb_device_id ssb_hcd_table[] __devinitconst = {
|
|
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV),
|
|
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV),
|
|
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
|
|
+ SSB_DEVTABLE_END
|
|
+};
|
|
+MODULE_DEVICE_TABLE(ssb, ssb_hcd_table);
|
|
+
|
|
+static struct ssb_driver ssb_hcd_driver = {
|
|
+ .name = KBUILD_MODNAME,
|
|
+ .id_table = ssb_hcd_table,
|
|
+ .probe = ssb_hcd_probe,
|
|
+ .remove = __devexit_p(ssb_hcd_remove),
|
|
+ .shutdown = ssb_hcd_shutdown,
|
|
+ .suspend = ssb_hcd_suspend,
|
|
+ .resume = ssb_hcd_resume,
|
|
+};
|
|
+
|
|
+static int __init ssb_hcd_init(void)
|
|
+{
|
|
+ return ssb_driver_register(&ssb_hcd_driver);
|
|
+}
|
|
+module_init(ssb_hcd_init);
|
|
+
|
|
+static void __exit ssb_hcd_exit(void)
|
|
+{
|
|
+ ssb_driver_unregister(&ssb_hcd_driver);
|
|
+}
|
|
+module_exit(ssb_hcd_exit);
|