Initial import

1 files changed, 266 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
new file mode 100644
index 000000000..7934ff9b3
--- /dev/null
+++ b/drivers/usb/host/ehci-ps3.c
@@ -0,0 +1,266 @@
+/*
+ *  PS3 EHCI 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 void ps3_ehci_setup_insnreg(struct ehci_hcd *ehci)
+{
+	/* PS3 HC internal setup register offsets. */
+
+	enum ps3_ehci_hc_insnreg {
+		ps3_ehci_hc_insnreg01 = 0x084,
+		ps3_ehci_hc_insnreg02 = 0x088,
+		ps3_ehci_hc_insnreg03 = 0x08c,
+	};
+
+	/* PS3 EHCI HC errata fix 316 - The PS3 EHCI HC will reset its
+	 * internal INSNREGXX setup regs back to the chip default values
+	 * on Host Controller Reset (CMD_RESET) or Light Host Controller
+	 * Reset (CMD_LRESET).  The work-around for this is for the HC
+	 * driver to re-initialise these regs when ever the HC is reset.
+	 */
+
+	/* Set burst transfer counts to 256 out, 32 in. */
+
+	writel_be(0x01000020, (void __iomem *)ehci->regs +
+		ps3_ehci_hc_insnreg01);
+
+	/* Enable burst transfer counts. */
+
+	writel_be(0x00000001, (void __iomem *)ehci->regs +
+		ps3_ehci_hc_insnreg03);
+}
+
+static int ps3_ehci_hc_reset(struct usb_hcd *hcd)
+{
+	int result;
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+	ehci->big_endian_mmio = 1;
+	ehci->caps = hcd->regs;
+
+	result = ehci_setup(hcd);
+	if (result)
+		return result;
+
+	ps3_ehci_setup_insnreg(ehci);
+
+	return result;
+}
+
+static const struct hc_driver ps3_ehci_hc_driver = {
+	.description		= hcd_name,
+	.product_desc		= "PS3 EHCI Host Controller",
+	.hcd_priv_size		= sizeof(struct ehci_hcd),
+	.irq			= ehci_irq,
+	.flags			= HCD_MEMORY | HCD_USB2 | HCD_BH,
+	.reset			= ps3_ehci_hc_reset,
+	.start			= ehci_run,
+	.stop			= ehci_stop,
+	.shutdown		= ehci_shutdown,
+	.urb_enqueue		= ehci_urb_enqueue,
+	.urb_dequeue		= ehci_urb_dequeue,
+	.endpoint_disable	= ehci_endpoint_disable,
+	.endpoint_reset		= ehci_endpoint_reset,
+	.get_frame_number	= ehci_get_frame,
+	.hub_status_data	= ehci_hub_status_data,
+	.hub_control		= ehci_hub_control,
+#if defined(CONFIG_PM)
+	.bus_suspend		= ehci_bus_suspend,
+	.bus_resume		= ehci_bus_resume,
+#endif
+	.relinquish_port	= ehci_relinquish_port,
+	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
+};
+
+static int ps3_ehci_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\n",
+			__func__, __LINE__);
+		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_ehci_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_ehci_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;
+
+	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_ehci_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_ehci_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_EHCI);
+
+static struct ps3_system_bus_driver ps3_ehci_driver = {
+	.core.name = "ps3-ehci-driver",
+	.core.owner = THIS_MODULE,
+	.match_id = PS3_MATCH_ID_EHCI,
+	.probe = ps3_ehci_probe,
+	.remove = ps3_ehci_remove,
+	.shutdown = ps3_ehci_remove,
+};