Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / usb / host / ohci-ps3.c
diff --git a/kernel/drivers/usb/host/ohci-ps3.c b/kernel/drivers/usb/host/ohci-ps3.c
new file mode 100644 (file)
index 0000000..71d8bc4
--- /dev/null
@@ -0,0 +1,251 @@
+/*
+ *  PS3 OHCI Host Controller driver
+ *
+ *  Copyright (C) 2006 Sony Computer Entertainment Inc.
+ *  Copyright 2006 Sony Corp.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <asm/firmware.h>
+#include <asm/ps3.h>
+
+static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
+{
+       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+       ohci->flags |= OHCI_QUIRK_BE_MMIO;
+       ohci_hcd_init(ohci);
+       return ohci_init(ohci);
+}
+
+static int ps3_ohci_hc_start(struct usb_hcd *hcd)
+{
+       int result;
+       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+       /* Handle root hub init quirk in spider south bridge. */
+       /* Also set PwrOn2PwrGood to 0x7f (254ms). */
+
+       ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
+               &ohci->regs->roothub.a);
+       ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
+
+       result = ohci_run(ohci);
+
+       if (result < 0) {
+               dev_err(hcd->self.controller, "can't start %s\n",
+                       hcd->self.bus_name);
+               ohci_stop(hcd);
+       }
+
+       return result;
+}
+
+static const struct hc_driver ps3_ohci_hc_driver = {
+       .description            = hcd_name,
+       .product_desc           = "PS3 OHCI Host Controller",
+       .hcd_priv_size          = sizeof(struct ohci_hcd),
+       .irq                    = ohci_irq,
+       .flags                  = HCD_MEMORY | HCD_USB11,
+       .reset                  = ps3_ohci_hc_reset,
+       .start                  = ps3_ohci_hc_start,
+       .stop                   = ohci_stop,
+       .shutdown               = ohci_shutdown,
+       .urb_enqueue            = ohci_urb_enqueue,
+       .urb_dequeue            = ohci_urb_dequeue,
+       .endpoint_disable       = ohci_endpoint_disable,
+       .get_frame_number       = ohci_get_frame,
+       .hub_status_data        = ohci_hub_status_data,
+       .hub_control            = ohci_hub_control,
+       .start_port_reset       = ohci_start_port_reset,
+#if defined(CONFIG_PM)
+       .bus_suspend            = ohci_bus_suspend,
+       .bus_resume             = ohci_bus_resume,
+#endif
+};
+
+static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
+{
+       int result;
+       struct usb_hcd *hcd;
+       unsigned int virq;
+       static u64 dummy_mask = DMA_BIT_MASK(32);
+
+       if (usb_disabled()) {
+               result = -ENODEV;
+               goto fail_start;
+       }
+
+       result = ps3_open_hv_device(dev);
+
+       if (result) {
+               dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
+                       __func__, __LINE__, ps3_result(result));
+               result = -EPERM;
+               goto fail_open;
+       }
+
+       result = ps3_dma_region_create(dev->d_region);
+
+       if (result) {
+               dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
+                       "(%d)\n", __func__, __LINE__, result);
+               BUG_ON("check region type");
+               goto fail_dma_region;
+       }
+
+       result = ps3_mmio_region_create(dev->m_region);
+
+       if (result) {
+               dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
+                       __func__, __LINE__);
+               result = -EPERM;
+               goto fail_mmio_region;
+       }
+
+       dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
+               __LINE__, dev->m_region->lpar_addr);
+
+       result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
+
+       if (result) {
+               dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
+                       __func__, __LINE__, virq);
+               result = -EPERM;
+               goto fail_irq;
+       }
+
+       dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
+
+       hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
+
+       if (!hcd) {
+               dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
+                       __LINE__);
+               result = -ENOMEM;
+               goto fail_create_hcd;
+       }
+
+       hcd->rsrc_start = dev->m_region->lpar_addr;
+       hcd->rsrc_len = dev->m_region->len;
+
+       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
+               dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
+                       __func__, __LINE__);
+
+       hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
+
+       if (!hcd->regs) {
+               dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
+                       __LINE__);
+               result = -EPERM;
+               goto fail_ioremap;
+       }
+
+       dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
+               (unsigned long)hcd->rsrc_start);
+       dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
+               (unsigned long)hcd->rsrc_len);
+       dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
+               (unsigned long)hcd->regs);
+       dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
+               (unsigned long)virq);
+
+       ps3_system_bus_set_drvdata(dev, hcd);
+
+       result = usb_add_hcd(hcd, virq, 0);
+
+       if (result) {
+               dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
+                       __func__, __LINE__, result);
+               goto fail_add_hcd;
+       }
+
+       device_wakeup_enable(hcd->self.controller);
+       return result;
+
+fail_add_hcd:
+       iounmap(hcd->regs);
+fail_ioremap:
+       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+       usb_put_hcd(hcd);
+fail_create_hcd:
+       ps3_io_irq_destroy(virq);
+fail_irq:
+       ps3_free_mmio_region(dev->m_region);
+fail_mmio_region:
+       ps3_dma_region_free(dev->d_region);
+fail_dma_region:
+       ps3_close_hv_device(dev);
+fail_open:
+fail_start:
+       return result;
+}
+
+static int ps3_ohci_remove(struct ps3_system_bus_device *dev)
+{
+       unsigned int tmp;
+       struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
+
+       BUG_ON(!hcd);
+
+       dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
+       dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
+
+       tmp = hcd->irq;
+
+       ohci_shutdown(hcd);
+       usb_remove_hcd(hcd);
+
+       ps3_system_bus_set_drvdata(dev, NULL);
+
+       BUG_ON(!hcd->regs);
+       iounmap(hcd->regs);
+
+       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+       usb_put_hcd(hcd);
+
+       ps3_io_irq_destroy(tmp);
+       ps3_free_mmio_region(dev->m_region);
+
+       ps3_dma_region_free(dev->d_region);
+       ps3_close_hv_device(dev);
+
+       return 0;
+}
+
+static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
+{
+       return firmware_has_feature(FW_FEATURE_PS3_LV1)
+               ? ps3_system_bus_driver_register(drv)
+               : 0;
+}
+
+static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
+{
+       if (firmware_has_feature(FW_FEATURE_PS3_LV1))
+               ps3_system_bus_driver_unregister(drv);
+}
+
+MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);
+
+static struct ps3_system_bus_driver ps3_ohci_driver = {
+       .core.name = "ps3-ohci-driver",
+       .core.owner = THIS_MODULE,
+       .match_id = PS3_MATCH_ID_OHCI,
+       .probe = ps3_ohci_probe,
+       .remove = ps3_ohci_remove,
+       .shutdown = ps3_ohci_remove,
+};