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/firmware.h> 22#include <asm/ps3.h> 23 24static int ps3_ehci_hc_reset(struct usb_hcd *hcd) 25{ 26 int result; 27 struct ehci_hcd *ehci = hcd_to_ehci(hcd); 28 29 ehci->big_endian_mmio = 1; 30 31 ehci->caps = hcd->regs; 32 ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci, 33 &ehci->caps->hc_capbase)); 34 35 dbg_hcs_params(ehci, "reset"); 36 dbg_hcc_params(ehci, "reset"); 37 38 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); 39 40 result = ehci_halt(ehci); 41 42 if (result) 43 return result; 44 45 result = ehci_init(hcd); 46 47 if (result) 48 return result; 49 50 ehci_reset(ehci); 51 52 return result; 53} 54 55static const struct hc_driver ps3_ehci_hc_driver = { 56 .description = hcd_name, 57 .product_desc = "PS3 EHCI Host Controller", 58 .hcd_priv_size = sizeof(struct ehci_hcd), 59 .irq = ehci_irq, 60 .flags = HCD_MEMORY | HCD_USB2, 61 .reset = ps3_ehci_hc_reset, 62 .start = ehci_run, 63 .stop = ehci_stop, 64 .shutdown = ehci_shutdown, 65 .urb_enqueue = ehci_urb_enqueue, 66 .urb_dequeue = ehci_urb_dequeue, 67 .endpoint_disable = ehci_endpoint_disable, 68 .endpoint_reset = ehci_endpoint_reset, 69 .get_frame_number = ehci_get_frame, 70 .hub_status_data = ehci_hub_status_data, 71 .hub_control = ehci_hub_control, 72#if defined(CONFIG_PM) 73 .bus_suspend = ehci_bus_suspend, 74 .bus_resume = ehci_bus_resume, 75#endif 76 .relinquish_port = ehci_relinquish_port, 77 .port_handed_over = ehci_port_handed_over, 78 79 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, 80}; 81 82static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev) 83{ 84 int result; 85 struct usb_hcd *hcd; 86 unsigned int virq; 87 static u64 dummy_mask = DMA_BIT_MASK(32); 88 89 if (usb_disabled()) { 90 result = -ENODEV; 91 goto fail_start; 92 } 93 94 result = ps3_open_hv_device(dev); 95 96 if (result) { 97 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n", 98 __func__, __LINE__); 99 goto fail_open; 100 } 101 102 result = ps3_dma_region_create(dev->d_region); 103 104 if (result) { 105 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " 106 "(%d)\n", __func__, __LINE__, result); 107 BUG_ON("check region type"); 108 goto fail_dma_region; 109 } 110 111 result = ps3_mmio_region_create(dev->m_region); 112 113 if (result) { 114 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 115 __func__, __LINE__); 116 result = -EPERM; 117 goto fail_mmio_region; 118 } 119 120 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 121 __LINE__, dev->m_region->lpar_addr); 122 123 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 124 125 if (result) { 126 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 127 __func__, __LINE__, virq); 128 result = -EPERM; 129 goto fail_irq; 130 } 131 132 dev->core.dma_mask = &dummy_mask; 133 134 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core)); 135 136 if (!hcd) { 137 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 138 __LINE__); 139 result = -ENOMEM; 140 goto fail_create_hcd; 141 } 142 143 hcd->rsrc_start = dev->m_region->lpar_addr; 144 hcd->rsrc_len = dev->m_region->len; 145 146 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) 147 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", 148 __func__, __LINE__); 149 150 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 151 152 if (!hcd->regs) { 153 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 154 __LINE__); 155 result = -EPERM; 156 goto fail_ioremap; 157 } 158 159 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 160 (unsigned long)hcd->rsrc_start); 161 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 162 (unsigned long)hcd->rsrc_len); 163 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 164 (unsigned long)hcd->regs); 165 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 166 (unsigned long)virq); 167 168 ps3_system_bus_set_drvdata(dev, hcd); 169 170 result = usb_add_hcd(hcd, virq, IRQF_DISABLED); 171 172 if (result) { 173 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 174 __func__, __LINE__, result); 175 goto fail_add_hcd; 176 } 177 178 return result; 179 180fail_add_hcd: 181 iounmap(hcd->regs); 182fail_ioremap: 183 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 184 usb_put_hcd(hcd); 185fail_create_hcd: 186 ps3_io_irq_destroy(virq); 187fail_irq: 188 ps3_free_mmio_region(dev->m_region); 189fail_mmio_region: 190 ps3_dma_region_free(dev->d_region); 191fail_dma_region: 192 ps3_close_hv_device(dev); 193fail_open: 194fail_start: 195 return result; 196} 197 198static int ps3_ehci_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 ehci_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 230static int __init ps3_ehci_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 237static void ps3_ehci_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 243MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI); 244 245static struct ps3_system_bus_driver ps3_ehci_driver = { 246 .core.name = "ps3-ehci-driver", 247 .core.owner = THIS_MODULE, 248 .match_id = PS3_MATCH_ID_EHCI, 249 .probe = ps3_ehci_probe, 250 .remove = ps3_ehci_remove, 251 .shutdown = ps3_ehci_remove, 252}; 253