1 /* 2 * PS3 OHCI 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/ps3.h> 22 23 static int ps3_ohci_hc_reset(struct usb_hcd *hcd) 24 { 25 struct ohci_hcd *ohci = hcd_to_ohci(hcd); 26 27 ohci->flags |= OHCI_QUIRK_BE_MMIO; 28 ohci_hcd_init(ohci); 29 return ohci_init(ohci); 30 } 31 32 static int __devinit ps3_ohci_hc_start(struct usb_hcd *hcd) 33 { 34 int result; 35 struct ohci_hcd *ohci = hcd_to_ohci(hcd); 36 37 /* Handle root hub init quirk in spider south bridge. */ 38 /* Also set PwrOn2PwrGood to 0x7f (254ms). */ 39 40 ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM, 41 &ohci->regs->roothub.a); 42 ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b); 43 44 result = ohci_run(ohci); 45 46 if (result < 0) { 47 err("can't start %s", hcd->self.bus_name); 48 ohci_stop(hcd); 49 } 50 51 return result; 52 } 53 54 static const struct hc_driver ps3_ohci_hc_driver = { 55 .description = hcd_name, 56 .product_desc = "PS3 OHCI Host Controller", 57 .hcd_priv_size = sizeof(struct ohci_hcd), 58 .irq = ohci_irq, 59 .flags = HCD_MEMORY | HCD_USB11, 60 .reset = ps3_ohci_hc_reset, 61 .start = ps3_ohci_hc_start, 62 .stop = ohci_stop, 63 .shutdown = ohci_shutdown, 64 .urb_enqueue = ohci_urb_enqueue, 65 .urb_dequeue = ohci_urb_dequeue, 66 .endpoint_disable = ohci_endpoint_disable, 67 .get_frame_number = ohci_get_frame, 68 .hub_status_data = ohci_hub_status_data, 69 .hub_control = ohci_hub_control, 70 .hub_irq_enable = ohci_rhsc_enable, 71 .start_port_reset = ohci_start_port_reset, 72 #if defined(CONFIG_PM) 73 .bus_suspend = ohci_bus_suspend, 74 .bus_resume = ohci_bus_resume, 75 #endif 76 }; 77 78 /* redefine dev_dbg to do a syntax check */ 79 80 #if !defined(DEBUG) 81 #undef dev_dbg 82 static inline int __attribute__ ((format (printf, 2, 3))) dev_dbg( 83 const struct device *_dev, const char *fmt, ...) {return 0;} 84 #endif 85 86 static int ps3_ohci_sb_probe(struct ps3_system_bus_device *dev) 87 { 88 int result; 89 struct usb_hcd *hcd; 90 unsigned int virq; 91 static u64 dummy_mask = DMA_32BIT_MASK; 92 93 if (usb_disabled()) { 94 result = -ENODEV; 95 goto fail_start; 96 } 97 98 result = ps3_mmio_region_create(dev->m_region); 99 100 if (result) { 101 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 102 __func__, __LINE__); 103 result = -EPERM; 104 goto fail_mmio; 105 } 106 107 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 108 __LINE__, dev->m_region->lpar_addr); 109 110 result = ps3_alloc_io_irq(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 111 112 if (result) { 113 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 114 __func__, __LINE__, virq); 115 result = -EPERM; 116 goto fail_irq; 117 } 118 119 dev->core.power.power_state = PMSG_ON; 120 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 121 122 hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev->core.bus_id); 123 124 if (!hcd) { 125 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 126 __LINE__); 127 result = -ENOMEM; 128 goto fail_create_hcd; 129 } 130 131 hcd->rsrc_start = dev->m_region->lpar_addr; 132 hcd->rsrc_len = dev->m_region->len; 133 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 134 135 if (!hcd->regs) { 136 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 137 __LINE__); 138 result = -EPERM; 139 goto fail_ioremap; 140 } 141 142 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 143 (unsigned long)hcd->rsrc_start); 144 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 145 (unsigned long)hcd->rsrc_len); 146 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 147 (unsigned long)hcd->regs); 148 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 149 (unsigned long)virq); 150 151 ps3_system_bus_set_driver_data(dev, hcd); 152 153 result = usb_add_hcd(hcd, virq, IRQF_DISABLED); 154 155 if (result) { 156 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 157 __func__, __LINE__, result); 158 goto fail_add_hcd; 159 } 160 161 return result; 162 163 fail_add_hcd: 164 iounmap(hcd->regs); 165 fail_ioremap: 166 usb_put_hcd(hcd); 167 fail_create_hcd: 168 ps3_free_io_irq(virq); 169 fail_irq: 170 ps3_free_mmio_region(dev->m_region); 171 fail_mmio: 172 fail_start: 173 return result; 174 } 175 176 static int ps3_ohci_sb_remove (struct ps3_system_bus_device *dev) 177 { 178 struct usb_hcd *hcd = 179 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); 180 181 usb_put_hcd(hcd); 182 ps3_system_bus_set_driver_data(dev, NULL); 183 184 return 0; 185 } 186 187 MODULE_ALIAS("ps3-ohci"); 188 189 static struct ps3_system_bus_driver ps3_ohci_sb_driver = { 190 .match_id = PS3_MATCH_ID_OHCI, 191 .core = { 192 .name = "ps3-ohci-driver", 193 }, 194 .probe = ps3_ohci_sb_probe, 195 .remove = ps3_ohci_sb_remove, 196 }; 197