1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * PS3 OHCI Host Controller driver 4 * 5 * Copyright (C) 2006 Sony Computer Entertainment Inc. 6 * Copyright 2006 Sony Corp. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; version 2 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22 #include <asm/firmware.h> 23 #include <asm/ps3.h> 24 25 static int ps3_ohci_hc_reset(struct usb_hcd *hcd) 26 { 27 struct ohci_hcd *ohci = hcd_to_ohci(hcd); 28 29 ohci->flags |= OHCI_QUIRK_BE_MMIO; 30 ohci_hcd_init(ohci); 31 return ohci_init(ohci); 32 } 33 34 static int ps3_ohci_hc_start(struct usb_hcd *hcd) 35 { 36 int result; 37 struct ohci_hcd *ohci = hcd_to_ohci(hcd); 38 39 /* Handle root hub init quirk in spider south bridge. */ 40 /* Also set PwrOn2PwrGood to 0x7f (254ms). */ 41 42 ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM, 43 &ohci->regs->roothub.a); 44 ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b); 45 46 result = ohci_run(ohci); 47 48 if (result < 0) { 49 dev_err(hcd->self.controller, "can't start %s\n", 50 hcd->self.bus_name); 51 ohci_stop(hcd); 52 } 53 54 return result; 55 } 56 57 static const struct hc_driver ps3_ohci_hc_driver = { 58 .description = hcd_name, 59 .product_desc = "PS3 OHCI Host Controller", 60 .hcd_priv_size = sizeof(struct ohci_hcd), 61 .irq = ohci_irq, 62 .flags = HCD_MEMORY | HCD_USB11, 63 .reset = ps3_ohci_hc_reset, 64 .start = ps3_ohci_hc_start, 65 .stop = ohci_stop, 66 .shutdown = ohci_shutdown, 67 .urb_enqueue = ohci_urb_enqueue, 68 .urb_dequeue = ohci_urb_dequeue, 69 .endpoint_disable = ohci_endpoint_disable, 70 .get_frame_number = ohci_get_frame, 71 .hub_status_data = ohci_hub_status_data, 72 .hub_control = ohci_hub_control, 73 .start_port_reset = ohci_start_port_reset, 74 #if defined(CONFIG_PM) 75 .bus_suspend = ohci_bus_suspend, 76 .bus_resume = ohci_bus_resume, 77 #endif 78 }; 79 80 static int ps3_ohci_probe(struct ps3_system_bus_device *dev) 81 { 82 int result; 83 struct usb_hcd *hcd; 84 unsigned int virq; 85 static u64 dummy_mask = DMA_BIT_MASK(32); 86 87 if (usb_disabled()) { 88 result = -ENODEV; 89 goto fail_start; 90 } 91 92 result = ps3_open_hv_device(dev); 93 94 if (result) { 95 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n", 96 __func__, __LINE__, ps3_result(result)); 97 result = -EPERM; 98 goto fail_open; 99 } 100 101 result = ps3_dma_region_create(dev->d_region); 102 103 if (result) { 104 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " 105 "(%d)\n", __func__, __LINE__, result); 106 BUG_ON("check region type"); 107 goto fail_dma_region; 108 } 109 110 result = ps3_mmio_region_create(dev->m_region); 111 112 if (result) { 113 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 114 __func__, __LINE__); 115 result = -EPERM; 116 goto fail_mmio_region; 117 } 118 119 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 120 __LINE__, dev->m_region->lpar_addr); 121 122 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 123 124 if (result) { 125 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 126 __func__, __LINE__, virq); 127 result = -EPERM; 128 goto fail_irq; 129 } 130 131 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 132 133 hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core)); 134 135 if (!hcd) { 136 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 137 __LINE__); 138 result = -ENOMEM; 139 goto fail_create_hcd; 140 } 141 142 hcd->rsrc_start = dev->m_region->lpar_addr; 143 hcd->rsrc_len = dev->m_region->len; 144 145 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) 146 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", 147 __func__, __LINE__); 148 149 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 150 151 if (!hcd->regs) { 152 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 153 __LINE__); 154 result = -EPERM; 155 goto fail_ioremap; 156 } 157 158 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 159 (unsigned long)hcd->rsrc_start); 160 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 161 (unsigned long)hcd->rsrc_len); 162 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 163 (unsigned long)hcd->regs); 164 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 165 (unsigned long)virq); 166 167 ps3_system_bus_set_drvdata(dev, hcd); 168 169 result = usb_add_hcd(hcd, virq, 0); 170 171 if (result) { 172 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 173 __func__, __LINE__, result); 174 goto fail_add_hcd; 175 } 176 177 device_wakeup_enable(hcd->self.controller); 178 return result; 179 180 fail_add_hcd: 181 iounmap(hcd->regs); 182 fail_ioremap: 183 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 184 usb_put_hcd(hcd); 185 fail_create_hcd: 186 ps3_io_irq_destroy(virq); 187 fail_irq: 188 ps3_free_mmio_region(dev->m_region); 189 fail_mmio_region: 190 ps3_dma_region_free(dev->d_region); 191 fail_dma_region: 192 ps3_close_hv_device(dev); 193 fail_open: 194 fail_start: 195 return result; 196 } 197 198 static int ps3_ohci_remove(struct ps3_system_bus_device *dev) 199 { 200 unsigned int tmp; 201 struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev); 202 203 BUG_ON(!hcd); 204 205 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs); 206 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq); 207 208 tmp = hcd->irq; 209 210 ohci_shutdown(hcd); 211 usb_remove_hcd(hcd); 212 213 ps3_system_bus_set_drvdata(dev, NULL); 214 215 BUG_ON(!hcd->regs); 216 iounmap(hcd->regs); 217 218 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 219 usb_put_hcd(hcd); 220 221 ps3_io_irq_destroy(tmp); 222 ps3_free_mmio_region(dev->m_region); 223 224 ps3_dma_region_free(dev->d_region); 225 ps3_close_hv_device(dev); 226 227 return 0; 228 } 229 230 static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv) 231 { 232 return firmware_has_feature(FW_FEATURE_PS3_LV1) 233 ? ps3_system_bus_driver_register(drv) 234 : 0; 235 } 236 237 static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv) 238 { 239 if (firmware_has_feature(FW_FEATURE_PS3_LV1)) 240 ps3_system_bus_driver_unregister(drv); 241 } 242 243 MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI); 244 245 static struct ps3_system_bus_driver ps3_ohci_driver = { 246 .core.name = "ps3-ohci-driver", 247 .core.owner = THIS_MODULE, 248 .match_id = PS3_MATCH_ID_OHCI, 249 .probe = ps3_ohci_probe, 250 .remove = ps3_ohci_remove, 251 .shutdown = ps3_ohci_remove, 252 }; 253