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 void ps3_ehci_setup_insnreg(struct ehci_hcd *ehci) 25 { 26 /* PS3 HC internal setup register offsets. */ 27 28 enum ps3_ehci_hc_insnreg { 29 ps3_ehci_hc_insnreg01 = 0x084, 30 ps3_ehci_hc_insnreg02 = 0x088, 31 ps3_ehci_hc_insnreg03 = 0x08c, 32 }; 33 34 /* PS3 EHCI HC errata fix 316 - The PS3 EHCI HC will reset its 35 * internal INSNREGXX setup regs back to the chip default values 36 * on Host Controller Reset (CMD_RESET) or Light Host Controller 37 * Reset (CMD_LRESET). The work-around for this is for the HC 38 * driver to re-initialise these regs when ever the HC is reset. 39 */ 40 41 /* Set burst transfer counts to 256 out, 32 in. */ 42 43 writel_be(0x01000020, (void __iomem *)ehci->regs + 44 ps3_ehci_hc_insnreg01); 45 46 /* Enable burst transfer counts. */ 47 48 writel_be(0x00000001, (void __iomem *)ehci->regs + 49 ps3_ehci_hc_insnreg03); 50 } 51 52 static int ps3_ehci_hc_reset(struct usb_hcd *hcd) 53 { 54 int result; 55 struct ehci_hcd *ehci = hcd_to_ehci(hcd); 56 57 ehci->big_endian_mmio = 1; 58 ehci->caps = hcd->regs; 59 60 result = ehci_setup(hcd); 61 if (result) 62 return result; 63 64 ps3_ehci_setup_insnreg(ehci); 65 66 return result; 67 } 68 69 static const struct hc_driver ps3_ehci_hc_driver = { 70 .description = hcd_name, 71 .product_desc = "PS3 EHCI Host Controller", 72 .hcd_priv_size = sizeof(struct ehci_hcd), 73 .irq = ehci_irq, 74 .flags = HCD_MEMORY | HCD_USB2, 75 .reset = ps3_ehci_hc_reset, 76 .start = ehci_run, 77 .stop = ehci_stop, 78 .shutdown = ehci_shutdown, 79 .urb_enqueue = ehci_urb_enqueue, 80 .urb_dequeue = ehci_urb_dequeue, 81 .endpoint_disable = ehci_endpoint_disable, 82 .endpoint_reset = ehci_endpoint_reset, 83 .get_frame_number = ehci_get_frame, 84 .hub_status_data = ehci_hub_status_data, 85 .hub_control = ehci_hub_control, 86 #if defined(CONFIG_PM) 87 .bus_suspend = ehci_bus_suspend, 88 .bus_resume = ehci_bus_resume, 89 #endif 90 .relinquish_port = ehci_relinquish_port, 91 .port_handed_over = ehci_port_handed_over, 92 93 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, 94 }; 95 96 static int ps3_ehci_probe(struct ps3_system_bus_device *dev) 97 { 98 int result; 99 struct usb_hcd *hcd; 100 unsigned int virq; 101 static u64 dummy_mask = DMA_BIT_MASK(32); 102 103 if (usb_disabled()) { 104 result = -ENODEV; 105 goto fail_start; 106 } 107 108 result = ps3_open_hv_device(dev); 109 110 if (result) { 111 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n", 112 __func__, __LINE__); 113 goto fail_open; 114 } 115 116 result = ps3_dma_region_create(dev->d_region); 117 118 if (result) { 119 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " 120 "(%d)\n", __func__, __LINE__, result); 121 BUG_ON("check region type"); 122 goto fail_dma_region; 123 } 124 125 result = ps3_mmio_region_create(dev->m_region); 126 127 if (result) { 128 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 129 __func__, __LINE__); 130 result = -EPERM; 131 goto fail_mmio_region; 132 } 133 134 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 135 __LINE__, dev->m_region->lpar_addr); 136 137 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 138 139 if (result) { 140 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 141 __func__, __LINE__, virq); 142 result = -EPERM; 143 goto fail_irq; 144 } 145 146 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 147 148 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core)); 149 150 if (!hcd) { 151 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 152 __LINE__); 153 result = -ENOMEM; 154 goto fail_create_hcd; 155 } 156 157 hcd->rsrc_start = dev->m_region->lpar_addr; 158 hcd->rsrc_len = dev->m_region->len; 159 160 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) 161 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", 162 __func__, __LINE__); 163 164 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 165 166 if (!hcd->regs) { 167 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 168 __LINE__); 169 result = -EPERM; 170 goto fail_ioremap; 171 } 172 173 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 174 (unsigned long)hcd->rsrc_start); 175 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 176 (unsigned long)hcd->rsrc_len); 177 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 178 (unsigned long)hcd->regs); 179 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 180 (unsigned long)virq); 181 182 ps3_system_bus_set_drvdata(dev, hcd); 183 184 result = usb_add_hcd(hcd, virq, 0); 185 186 if (result) { 187 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 188 __func__, __LINE__, result); 189 goto fail_add_hcd; 190 } 191 192 return result; 193 194 fail_add_hcd: 195 iounmap(hcd->regs); 196 fail_ioremap: 197 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 198 usb_put_hcd(hcd); 199 fail_create_hcd: 200 ps3_io_irq_destroy(virq); 201 fail_irq: 202 ps3_free_mmio_region(dev->m_region); 203 fail_mmio_region: 204 ps3_dma_region_free(dev->d_region); 205 fail_dma_region: 206 ps3_close_hv_device(dev); 207 fail_open: 208 fail_start: 209 return result; 210 } 211 212 static int ps3_ehci_remove(struct ps3_system_bus_device *dev) 213 { 214 unsigned int tmp; 215 struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev); 216 217 BUG_ON(!hcd); 218 219 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs); 220 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq); 221 222 tmp = hcd->irq; 223 224 usb_remove_hcd(hcd); 225 226 ps3_system_bus_set_drvdata(dev, NULL); 227 228 BUG_ON(!hcd->regs); 229 iounmap(hcd->regs); 230 231 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 232 usb_put_hcd(hcd); 233 234 ps3_io_irq_destroy(tmp); 235 ps3_free_mmio_region(dev->m_region); 236 237 ps3_dma_region_free(dev->d_region); 238 ps3_close_hv_device(dev); 239 240 return 0; 241 } 242 243 static int __init ps3_ehci_driver_register(struct ps3_system_bus_driver *drv) 244 { 245 return firmware_has_feature(FW_FEATURE_PS3_LV1) 246 ? ps3_system_bus_driver_register(drv) 247 : 0; 248 } 249 250 static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv) 251 { 252 if (firmware_has_feature(FW_FEATURE_PS3_LV1)) 253 ps3_system_bus_driver_unregister(drv); 254 } 255 256 MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI); 257 258 static struct ps3_system_bus_driver ps3_ehci_driver = { 259 .core.name = "ps3-ehci-driver", 260 .core.owner = THIS_MODULE, 261 .match_id = PS3_MATCH_ID_EHCI, 262 .probe = ps3_ehci_probe, 263 .remove = ps3_ehci_remove, 264 .shutdown = ps3_ehci_remove, 265 }; 266