| // 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, |
| }; |