diff options
Diffstat (limited to 'drivers/usb/host/ehci-ps3.c')
| -rw-r--r-- | drivers/usb/host/ehci-ps3.c | 256 |
1 files changed, 256 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..454d8c624 --- /dev/null +++ b/drivers/usb/host/ehci-ps3.c @@ -0,0 +1,256 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PS3 EHCI Host Controller driver + * + * Copyright (C) 2006 Sony Computer Entertainment Inc. + * Copyright 2006 Sony Corp. + */ + +#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; + + 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; + } + + dummy_mask = DMA_BIT_MASK(32); + dev->core.dma_mask = &dummy_mask; + dma_set_coherent_mask(&dev->core, dummy_mask); + + 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, +}; 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