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 24 static 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_port_power(ehci, 0); 51 52 return result; 53 } 54 55 static 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 .get_frame_number = ehci_get_frame, 69 .hub_status_data = ehci_hub_status_data, 70 .hub_control = ehci_hub_control, 71 #if defined(CONFIG_PM) 72 .bus_suspend = ehci_bus_suspend, 73 .bus_resume = ehci_bus_resume, 74 #endif 75 }; 76 77 static int ps3_ehci_probe(struct ps3_system_bus_device *dev) 78 { 79 int result; 80 struct usb_hcd *hcd; 81 unsigned int virq; 82 static u64 dummy_mask = DMA_32BIT_MASK; 83 84 if (usb_disabled()) { 85 result = -ENODEV; 86 goto fail_start; 87 } 88 89 result = ps3_open_hv_device(dev); 90 91 if (result) { 92 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n", 93 __func__, __LINE__); 94 goto fail_open; 95 } 96 97 result = ps3_dma_region_create(dev->d_region); 98 99 if (result) { 100 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " 101 "(%d)\n", __func__, __LINE__, result); 102 BUG_ON("check region type"); 103 goto fail_dma_region; 104 } 105 106 result = ps3_mmio_region_create(dev->m_region); 107 108 if (result) { 109 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 110 __func__, __LINE__); 111 result = -EPERM; 112 goto fail_mmio_region; 113 } 114 115 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 116 __LINE__, dev->m_region->lpar_addr); 117 118 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 119 120 if (result) { 121 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 122 __func__, __LINE__, virq); 123 result = -EPERM; 124 goto fail_irq; 125 } 126 127 dev->core.power.power_state = PMSG_ON; 128 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 129 130 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id); 131 132 if (!hcd) { 133 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 134 __LINE__); 135 result = -ENOMEM; 136 goto fail_create_hcd; 137 } 138 139 hcd->rsrc_start = dev->m_region->lpar_addr; 140 hcd->rsrc_len = dev->m_region->len; 141 142 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) 143 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", 144 __func__, __LINE__); 145 146 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 147 148 if (!hcd->regs) { 149 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 150 __LINE__); 151 result = -EPERM; 152 goto fail_ioremap; 153 } 154 155 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 156 (unsigned long)hcd->rsrc_start); 157 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 158 (unsigned long)hcd->rsrc_len); 159 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 160 (unsigned long)hcd->regs); 161 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 162 (unsigned long)virq); 163 164 ps3_system_bus_set_driver_data(dev, hcd); 165 166 result = usb_add_hcd(hcd, virq, IRQF_DISABLED); 167 168 if (result) { 169 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 170 __func__, __LINE__, result); 171 goto fail_add_hcd; 172 } 173 174 return result; 175 176 fail_add_hcd: 177 iounmap(hcd->regs); 178 fail_ioremap: 179 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 180 usb_put_hcd(hcd); 181 fail_create_hcd: 182 ps3_io_irq_destroy(virq); 183 fail_irq: 184 ps3_free_mmio_region(dev->m_region); 185 fail_mmio_region: 186 ps3_dma_region_free(dev->d_region); 187 fail_dma_region: 188 ps3_close_hv_device(dev); 189 fail_open: 190 fail_start: 191 return result; 192 } 193 194 static int ps3_ehci_remove(struct ps3_system_bus_device *dev) 195 { 196 unsigned int tmp; 197 struct usb_hcd *hcd = 198 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); 199 200 BUG_ON(!hcd); 201 202 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs); 203 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq); 204 205 tmp = hcd->irq; 206 207 usb_remove_hcd(hcd); 208 209 ps3_system_bus_set_driver_data(dev, NULL); 210 211 BUG_ON(!hcd->regs); 212 iounmap(hcd->regs); 213 214 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 215 usb_put_hcd(hcd); 216 217 ps3_io_irq_destroy(tmp); 218 ps3_free_mmio_region(dev->m_region); 219 220 ps3_dma_region_free(dev->d_region); 221 ps3_close_hv_device(dev); 222 223 return 0; 224 } 225 226 static int ps3_ehci_driver_register(struct ps3_system_bus_driver *drv) 227 { 228 return firmware_has_feature(FW_FEATURE_PS3_LV1) 229 ? ps3_system_bus_driver_register(drv) 230 : 0; 231 } 232 233 static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv) 234 { 235 if (firmware_has_feature(FW_FEATURE_PS3_LV1)) 236 ps3_system_bus_driver_unregister(drv); 237 } 238 239 MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI); 240 241 static struct ps3_system_bus_driver ps3_ehci_driver = { 242 .core.name = "ps3-ehci-driver", 243 .core.owner = THIS_MODULE, 244 .match_id = PS3_MATCH_ID_EHCI, 245 .probe = ps3_ehci_probe, 246 .remove = ps3_ehci_remove, 247 .shutdown = ps3_ehci_remove, 248 }; 249