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/ps3.h> 22 23 static int ps3_ehci_hc_reset(struct usb_hcd *hcd) 24 { 25 int result; 26 struct ehci_hcd *ehci = hcd_to_ehci(hcd); 27 28 ehci->big_endian_mmio = 1; 29 30 ehci->caps = hcd->regs; 31 ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci, 32 &ehci->caps->hc_capbase)); 33 34 dbg_hcs_params(ehci, "reset"); 35 dbg_hcc_params(ehci, "reset"); 36 37 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); 38 39 result = ehci_halt(ehci); 40 41 if (result) 42 return result; 43 44 result = ehci_init(hcd); 45 46 if (result) 47 return result; 48 49 ehci_port_power(ehci, 0); 50 51 return result; 52 } 53 54 static const struct hc_driver ps3_ehci_hc_driver = { 55 .description = hcd_name, 56 .product_desc = "PS3 EHCI Host Controller", 57 .hcd_priv_size = sizeof(struct ehci_hcd), 58 .irq = ehci_irq, 59 .flags = HCD_MEMORY | HCD_USB2, 60 .reset = ps3_ehci_hc_reset, 61 .start = ehci_run, 62 .stop = ehci_stop, 63 .shutdown = ehci_shutdown, 64 .urb_enqueue = ehci_urb_enqueue, 65 .urb_dequeue = ehci_urb_dequeue, 66 .endpoint_disable = ehci_endpoint_disable, 67 .get_frame_number = ehci_get_frame, 68 .hub_status_data = ehci_hub_status_data, 69 .hub_control = ehci_hub_control, 70 #if defined(CONFIG_PM) 71 .bus_suspend = ehci_bus_suspend, 72 .bus_resume = ehci_bus_resume, 73 #endif 74 }; 75 76 #if !defined(DEBUG) 77 #undef dev_dbg 78 static inline int __attribute__ ((format (printf, 2, 3))) dev_dbg( 79 const struct device *_dev, const char *fmt, ...) {return 0;} 80 #endif 81 82 83 static int ps3_ehci_sb_probe(struct ps3_system_bus_device *dev) 84 { 85 int result; 86 struct usb_hcd *hcd; 87 unsigned int virq; 88 static u64 dummy_mask = DMA_32BIT_MASK; 89 90 if (usb_disabled()) { 91 result = -ENODEV; 92 goto fail_start; 93 } 94 95 result = ps3_mmio_region_create(dev->m_region); 96 97 if (result) { 98 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", 99 __func__, __LINE__); 100 result = -EPERM; 101 goto fail_mmio; 102 } 103 104 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, 105 __LINE__, dev->m_region->lpar_addr); 106 107 result = ps3_alloc_io_irq(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); 108 109 if (result) { 110 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", 111 __func__, __LINE__, virq); 112 result = -EPERM; 113 goto fail_irq; 114 } 115 116 dev->core.power.power_state = PMSG_ON; 117 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ 118 119 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id); 120 121 if (!hcd) { 122 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, 123 __LINE__); 124 result = -ENOMEM; 125 goto fail_create_hcd; 126 } 127 128 hcd->rsrc_start = dev->m_region->lpar_addr; 129 hcd->rsrc_len = dev->m_region->len; 130 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); 131 132 if (!hcd->regs) { 133 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, 134 __LINE__); 135 result = -EPERM; 136 goto fail_ioremap; 137 } 138 139 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, 140 (unsigned long)hcd->rsrc_start); 141 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, 142 (unsigned long)hcd->rsrc_len); 143 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, 144 (unsigned long)hcd->regs); 145 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, 146 (unsigned long)virq); 147 148 ps3_system_bus_set_driver_data(dev, hcd); 149 150 result = usb_add_hcd(hcd, virq, IRQF_DISABLED); 151 152 if (result) { 153 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", 154 __func__, __LINE__, result); 155 goto fail_add_hcd; 156 } 157 158 return result; 159 160 fail_add_hcd: 161 iounmap(hcd->regs); 162 fail_ioremap: 163 usb_put_hcd(hcd); 164 fail_create_hcd: 165 ps3_free_io_irq(virq); 166 fail_irq: 167 ps3_free_mmio_region(dev->m_region); 168 fail_mmio: 169 fail_start: 170 return result; 171 } 172 173 static int ps3_ehci_sb_remove(struct ps3_system_bus_device *dev) 174 { 175 struct usb_hcd *hcd = 176 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); 177 178 usb_put_hcd(hcd); 179 ps3_system_bus_set_driver_data(dev, NULL); 180 181 return 0; 182 } 183 184 MODULE_ALIAS("ps3-ehci"); 185 186 static struct ps3_system_bus_driver ps3_ehci_sb_driver = { 187 .match_id = PS3_MATCH_ID_EHCI, 188 .core = { 189 .name = "ps3-ehci-driver", 190 }, 191 .probe = ps3_ehci_sb_probe, 192 .remove = ps3_ehci_sb_remove, 193 }; 194