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 59 ehci->caps = hcd->regs; 60 ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci, 61 &ehci->caps->hc_capbase)); 62 63 dbg_hcs_params(ehci, "reset"); 64 dbg_hcc_params(ehci, "reset"); 65 66 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); 67 68 result = ehci_halt(ehci); 69 70 if (result) 71 return result; 72 73 result = ehci_init(hcd); 74 75 if (result) 76 return result; 77 78 ehci_reset(ehci); 79 80 ps3_ehci_setup_insnreg(ehci); 81 82 return result; 83 } 84 85 static const struct hc_driver ps3_ehci_hc_driver = { 86 .description = hcd_name, 87 .product_desc = "PS3 EHCI Host Controller", 88 .hcd_priv_size = sizeof(struct ehci_hcd), 89 .irq = ehci_irq, 90 .flags = HCD_MEMORY | HCD_USB2, 91 .reset = ps3_ehci_hc_reset, 92 .start = ehci_run, 93 .stop = ehci_stop, 94 .shutdown = ehci_shutdown, 95 .urb_enqueue = ehci_urb_enqueue, 96 .urb_dequeue = ehci_urb_dequeue, 97 .endpoint_disable = ehci_endpoint_disable, 98 .endpoint_reset = ehci_endpoint_reset, 99 .get_frame_number = ehci_get_frame, 100 .hub_status_data = ehci_hub_status_data, 101 .hub_control = ehci_hub_control, 102 #if defined(CONFIG_PM) 103 .bus_suspend = ehci_bus_suspend, 104 .bus_resume = ehci_bus_resume, 105 #endif 106 .relinquish_port = ehci_relinquish_port, 107 .port_handed_over = ehci_port_handed_over, 108 109 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, 110 }; 111 112 static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev) 113 { 114 int result; 115 struct usb_hcd *hcd; 116 unsigned int virq; 117 static u64 dummy_mask = DMA_BIT_MASK(32); 118 119 if (usb_disabled()) { 120 result = -ENODEV; 121 goto fail_start; 122 } 123 124 result = ps3_open_hv_device(dev); 125 126 if (result) { 127 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n", 128 __func__, __LINE__); 129 goto fail_open; 130 } 131 132 result = ps3_dma_region_create(dev->d_region); 133 134 if (result) { 135 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " 136 "(%d)\n", __func__, __LINE__, result); 137 BUG_ON("check region type"); 138 goto fail_dma_region; 139 } 140 141 result = ps3_mmio_region_create(dev->m_region); 142 143 if (result) { 144 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 145 __func__, __LINE__); 146 result = -EPERM; 147 goto fail_mmio_region; 148 } 149 150 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 151 __LINE__, dev->m_region->lpar_addr); 152 153 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 154 155 if (result) { 156 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 157 __func__, __LINE__, virq); 158 result = -EPERM; 159 goto fail_irq; 160 } 161 162 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 163 164 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core)); 165 166 if (!hcd) { 167 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 168 __LINE__); 169 result = -ENOMEM; 170 goto fail_create_hcd; 171 } 172 173 hcd->rsrc_start = dev->m_region->lpar_addr; 174 hcd->rsrc_len = dev->m_region->len; 175 176 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) 177 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", 178 __func__, __LINE__); 179 180 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 181 182 if (!hcd->regs) { 183 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 184 __LINE__); 185 result = -EPERM; 186 goto fail_ioremap; 187 } 188 189 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 190 (unsigned long)hcd->rsrc_start); 191 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 192 (unsigned long)hcd->rsrc_len); 193 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 194 (unsigned long)hcd->regs); 195 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 196 (unsigned long)virq); 197 198 ps3_system_bus_set_drvdata(dev, hcd); 199 200 result = usb_add_hcd(hcd, virq, 0); 201 202 if (result) { 203 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 204 __func__, __LINE__, result); 205 goto fail_add_hcd; 206 } 207 208 return result; 209 210 fail_add_hcd: 211 iounmap(hcd->regs); 212 fail_ioremap: 213 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 214 usb_put_hcd(hcd); 215 fail_create_hcd: 216 ps3_io_irq_destroy(virq); 217 fail_irq: 218 ps3_free_mmio_region(dev->m_region); 219 fail_mmio_region: 220 ps3_dma_region_free(dev->d_region); 221 fail_dma_region: 222 ps3_close_hv_device(dev); 223 fail_open: 224 fail_start: 225 return result; 226 } 227 228 static int ps3_ehci_remove(struct ps3_system_bus_device *dev) 229 { 230 unsigned int tmp; 231 struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev); 232 233 BUG_ON(!hcd); 234 235 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs); 236 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq); 237 238 tmp = hcd->irq; 239 240 ehci_shutdown(hcd); 241 usb_remove_hcd(hcd); 242 243 ps3_system_bus_set_drvdata(dev, NULL); 244 245 BUG_ON(!hcd->regs); 246 iounmap(hcd->regs); 247 248 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 249 usb_put_hcd(hcd); 250 251 ps3_io_irq_destroy(tmp); 252 ps3_free_mmio_region(dev->m_region); 253 254 ps3_dma_region_free(dev->d_region); 255 ps3_close_hv_device(dev); 256 257 return 0; 258 } 259 260 static int __init ps3_ehci_driver_register(struct ps3_system_bus_driver *drv) 261 { 262 return firmware_has_feature(FW_FEATURE_PS3_LV1) 263 ? ps3_system_bus_driver_register(drv) 264 : 0; 265 } 266 267 static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv) 268 { 269 if (firmware_has_feature(FW_FEATURE_PS3_LV1)) 270 ps3_system_bus_driver_unregister(drv); 271 } 272 273 MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI); 274 275 static struct ps3_system_bus_driver ps3_ehci_driver = { 276 .core.name = "ps3-ehci-driver", 277 .core.owner = THIS_MODULE, 278 .match_id = PS3_MATCH_ID_EHCI, 279 .probe = ps3_ehci_probe, 280 .remove = ps3_ehci_remove, 281 .shutdown = ps3_ehci_remove, 282 }; 283