ehci-ps3.c revision 90da096ee46b682011b7d549e52b81cf9742e60b
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 .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 .relinquish_port = ehci_relinquish_port, 76}; 77 78static int ps3_ehci_probe(struct ps3_system_bus_device *dev) 79{ 80 int result; 81 struct usb_hcd *hcd; 82 unsigned int virq; 83 static u64 dummy_mask = DMA_32BIT_MASK; 84 85 if (usb_disabled()) { 86 result = -ENODEV; 87 goto fail_start; 88 } 89 90 result = ps3_open_hv_device(dev); 91 92 if (result) { 93 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n", 94 __func__, __LINE__); 95 goto fail_open; 96 } 97 98 result = ps3_dma_region_create(dev->d_region); 99 100 if (result) { 101 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " 102 "(%d)\n", __func__, __LINE__, result); 103 BUG_ON("check region type"); 104 goto fail_dma_region; 105 } 106 107 result = ps3_mmio_region_create(dev->m_region); 108 109 if (result) { 110 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 111 __func__, __LINE__); 112 result = -EPERM; 113 goto fail_mmio_region; 114 } 115 116 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 117 __LINE__, dev->m_region->lpar_addr); 118 119 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 120 121 if (result) { 122 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 123 __func__, __LINE__, virq); 124 result = -EPERM; 125 goto fail_irq; 126 } 127 128 dev->core.power.power_state = PMSG_ON; 129 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 130 131 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id); 132 133 if (!hcd) { 134 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 135 __LINE__); 136 result = -ENOMEM; 137 goto fail_create_hcd; 138 } 139 140 hcd->rsrc_start = dev->m_region->lpar_addr; 141 hcd->rsrc_len = dev->m_region->len; 142 143 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) 144 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", 145 __func__, __LINE__); 146 147 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 148 149 if (!hcd->regs) { 150 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 151 __LINE__); 152 result = -EPERM; 153 goto fail_ioremap; 154 } 155 156 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 157 (unsigned long)hcd->rsrc_start); 158 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 159 (unsigned long)hcd->rsrc_len); 160 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 161 (unsigned long)hcd->regs); 162 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 163 (unsigned long)virq); 164 165 ps3_system_bus_set_driver_data(dev, hcd); 166 167 result = usb_add_hcd(hcd, virq, IRQF_DISABLED); 168 169 if (result) { 170 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 171 __func__, __LINE__, result); 172 goto fail_add_hcd; 173 } 174 175 return result; 176 177fail_add_hcd: 178 iounmap(hcd->regs); 179fail_ioremap: 180 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 181 usb_put_hcd(hcd); 182fail_create_hcd: 183 ps3_io_irq_destroy(virq); 184fail_irq: 185 ps3_free_mmio_region(dev->m_region); 186fail_mmio_region: 187 ps3_dma_region_free(dev->d_region); 188fail_dma_region: 189 ps3_close_hv_device(dev); 190fail_open: 191fail_start: 192 return result; 193} 194 195static int ps3_ehci_remove(struct ps3_system_bus_device *dev) 196{ 197 unsigned int tmp; 198 struct usb_hcd *hcd = 199 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); 200 201 BUG_ON(!hcd); 202 203 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs); 204 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq); 205 206 tmp = hcd->irq; 207 208 usb_remove_hcd(hcd); 209 210 ps3_system_bus_set_driver_data(dev, NULL); 211 212 BUG_ON(!hcd->regs); 213 iounmap(hcd->regs); 214 215 release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 216 usb_put_hcd(hcd); 217 218 ps3_io_irq_destroy(tmp); 219 ps3_free_mmio_region(dev->m_region); 220 221 ps3_dma_region_free(dev->d_region); 222 ps3_close_hv_device(dev); 223 224 return 0; 225} 226 227static int ps3_ehci_driver_register(struct ps3_system_bus_driver *drv) 228{ 229 return firmware_has_feature(FW_FEATURE_PS3_LV1) 230 ? ps3_system_bus_driver_register(drv) 231 : 0; 232} 233 234static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv) 235{ 236 if (firmware_has_feature(FW_FEATURE_PS3_LV1)) 237 ps3_system_bus_driver_unregister(drv); 238} 239 240MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI); 241 242static struct ps3_system_bus_driver ps3_ehci_driver = { 243 .core.name = "ps3-ehci-driver", 244 .core.owner = THIS_MODULE, 245 .match_id = PS3_MATCH_ID_EHCI, 246 .probe = ps3_ehci_probe, 247 .remove = ps3_ehci_remove, 248 .shutdown = ps3_ehci_remove, 249}; 250