1 /* 2 * PS3 EHCI Host Controller driver 3 * 4 * Copyright (C) 2006 Sony Computer Entertainment Inc. 5 * Copyright 2006 Sony Corp. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; version 2 of the License. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #include <asm/ps3.h> 22 23 static int ps3_ehci_hc_reset(struct usb_hcd *hcd) 24 { 25 int result; 26 struct ehci_hcd *ehci = hcd_to_ehci(hcd); 27 28 ehci->big_endian_mmio = 1; 29 30 ehci->caps = hcd->regs; 31 ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci, 32 &ehci->caps->hc_capbase)); 33 34 dbg_hcs_params(ehci, "reset"); 35 dbg_hcc_params(ehci, "reset"); 36 37 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); 38 39 result = ehci_halt(ehci); 40 41 if (result) 42 return result; 43 44 result = ehci_init(hcd); 45 46 if (result) 47 return result; 48 49 ehci_port_power(ehci, 0); 50 51 return result; 52 } 53 54 static const struct hc_driver ps3_ehci_hc_driver = { 55 .description = hcd_name, 56 .product_desc = "PS3 EHCI Host Controller", 57 .hcd_priv_size = sizeof(struct ehci_hcd), 58 .irq = ehci_irq, 59 .flags = HCD_MEMORY | HCD_USB2, 60 .reset = ps3_ehci_hc_reset, 61 .start = ehci_run, 62 .stop = ehci_stop, 63 .shutdown = ehci_shutdown, 64 .urb_enqueue = ehci_urb_enqueue, 65 .urb_dequeue = ehci_urb_dequeue, 66 .endpoint_disable = ehci_endpoint_disable, 67 .get_frame_number = ehci_get_frame, 68 .hub_status_data = ehci_hub_status_data, 69 .hub_control = ehci_hub_control, 70 #if defined(CONFIG_PM) 71 .bus_suspend = ehci_bus_suspend, 72 .bus_resume = ehci_bus_resume, 73 #endif 74 }; 75 76 static int ps3_ehci_sb_probe(struct ps3_system_bus_device *dev) 77 { 78 int result; 79 struct usb_hcd *hcd; 80 unsigned int virq; 81 static u64 dummy_mask = DMA_32BIT_MASK; 82 83 if (usb_disabled()) { 84 result = -ENODEV; 85 goto fail_start; 86 } 87 88 result = ps3_mmio_region_create(dev->m_region); 89 90 if (result) { 91 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 92 __func__, __LINE__); 93 result = -EPERM; 94 goto fail_mmio; 95 } 96 97 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 98 __LINE__, dev->m_region->lpar_addr); 99 100 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 101 102 if (result) { 103 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 104 __func__, __LINE__, virq); 105 result = -EPERM; 106 goto fail_irq; 107 } 108 109 dev->core.power.power_state = PMSG_ON; 110 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 111 112 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id); 113 114 if (!hcd) { 115 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 116 __LINE__); 117 result = -ENOMEM; 118 goto fail_create_hcd; 119 } 120 121 hcd->rsrc_start = dev->m_region->lpar_addr; 122 hcd->rsrc_len = dev->m_region->len; 123 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 124 125 if (!hcd->regs) { 126 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 127 __LINE__); 128 result = -EPERM; 129 goto fail_ioremap; 130 } 131 132 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 133 (unsigned long)hcd->rsrc_start); 134 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 135 (unsigned long)hcd->rsrc_len); 136 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 137 (unsigned long)hcd->regs); 138 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 139 (unsigned long)virq); 140 141 ps3_system_bus_set_driver_data(dev, hcd); 142 143 result = usb_add_hcd(hcd, virq, IRQF_DISABLED); 144 145 if (result) { 146 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 147 __func__, __LINE__, result); 148 goto fail_add_hcd; 149 } 150 151 return result; 152 153 fail_add_hcd: 154 iounmap(hcd->regs); 155 fail_ioremap: 156 usb_put_hcd(hcd); 157 fail_create_hcd: 158 ps3_io_irq_destroy(virq); 159 fail_irq: 160 ps3_free_mmio_region(dev->m_region); 161 fail_mmio: 162 fail_start: 163 return result; 164 } 165 166 static int ps3_ehci_sb_remove(struct ps3_system_bus_device *dev) 167 { 168 struct usb_hcd *hcd = 169 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); 170 171 usb_put_hcd(hcd); 172 ps3_system_bus_set_driver_data(dev, NULL); 173 174 return 0; 175 } 176 177 MODULE_ALIAS("ps3-ehci"); 178 179 static struct ps3_system_bus_driver ps3_ehci_sb_driver = { 180 .match_id = PS3_MATCH_ID_EHCI, 181 .core = { 182 .name = "ps3-ehci-driver", 183 }, 184 .probe = ps3_ehci_sb_probe, 185 .remove = ps3_ehci_sb_remove, 186 }; 187