drivers/usb/host/ohci-ps3.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  PS3 OHCI Host Controller driver
   4  *
   5  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   6  *  Copyright 2006 Sony Corp.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; version 2 of the License.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <asm/firmware.h>
  23 #include <asm/ps3.h>
  24
  25 static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
  26 {
  27         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  28
  29         ohci->flags |= OHCI_QUIRK_BE_MMIO;
  30         ohci_hcd_init(ohci);
  31         return ohci_init(ohci);
  32 }
  33
  34 static int ps3_ohci_hc_start(struct usb_hcd *hcd)
  35 {
  36         int result;
  37         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  38
  39         /* Handle root hub init quirk in spider south bridge. */
  40         /* Also set PwrOn2PwrGood to 0x7f (254ms). */
  41
  42         ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
  43                 &ohci->regs->roothub.a);
  44         ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
  45
  46         result = ohci_run(ohci);
  47
  48         if (result < 0) {
  49                 dev_err(hcd->self.controller, "can't start %s\n",
  50                         hcd->self.bus_name);
  51                 ohci_stop(hcd);
  52         }
  53
  54         return result;
  55 }
  56
  57 static const struct hc_driver ps3_ohci_hc_driver = {
  58         .description            = hcd_name,
  59         .product_desc           = "PS3 OHCI Host Controller",
  60         .hcd_priv_size          = sizeof(struct ohci_hcd),
  61         .irq                    = ohci_irq,
  62         .flags                  = HCD_MEMORY | HCD_USB11,
  63         .reset                  = ps3_ohci_hc_reset,
  64         .start                  = ps3_ohci_hc_start,
  65         .stop                   = ohci_stop,
  66         .shutdown               = ohci_shutdown,
  67         .urb_enqueue            = ohci_urb_enqueue,
  68         .urb_dequeue            = ohci_urb_dequeue,
  69         .endpoint_disable       = ohci_endpoint_disable,
  70         .get_frame_number       = ohci_get_frame,
  71         .hub_status_data        = ohci_hub_status_data,
  72         .hub_control            = ohci_hub_control,
  73         .start_port_reset       = ohci_start_port_reset,
  74 #if defined(CONFIG_PM)
  75         .bus_suspend            = ohci_bus_suspend,
  76         .bus_resume             = ohci_bus_resume,
  77 #endif
  78 };
  79
  80 static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
  81 {
  82         int result;
  83         struct usb_hcd *hcd;
  84         unsigned int virq;
  85         static u64 dummy_mask = DMA_BIT_MASK(32);
  86
  87         if (usb_disabled()) {
  88                 result = -ENODEV;
  89                 goto fail_start;
  90         }
  91
  92         result = ps3_open_hv_device(dev);
  93
  94         if (result) {
  95                 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
  96                         __func__, __LINE__, ps3_result(result));
  97                 result = -EPERM;
  98                 goto fail_open;
  99         }
 100
 101         result = ps3_dma_region_create(dev->d_region);
 102
 103         if (result) {
 104                 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
 105                         "(%d)\n", __func__, __LINE__, result);
 106                 BUG_ON("check region type");
 107                 goto fail_dma_region;
 108         }
 109
 110         result = ps3_mmio_region_create(dev->m_region);
 111
 112         if (result) {
 113                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
 114                         __func__, __LINE__);
 115                 result = -EPERM;
 116                 goto fail_mmio_region;
 117         }
 118
 119         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
 120                 __LINE__, dev->m_region->lpar_addr);
 121
 122         result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
 123
 124         if (result) {
 125                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
 126                         __func__, __LINE__, virq);
 127                 result = -EPERM;
 128                 goto fail_irq;
 129         }
 130
 131         dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
 132
 133         hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
 134
 135         if (!hcd) {
 136                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
 137                         __LINE__);
 138                 result = -ENOMEM;
 139                 goto fail_create_hcd;
 140         }
 141
 142         hcd->rsrc_start = dev->m_region->lpar_addr;
 143         hcd->rsrc_len = dev->m_region->len;
 144
 145         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
 146                 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
 147                         __func__, __LINE__);
 148
 149         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
 150
 151         if (!hcd->regs) {
 152                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
 153                         __LINE__);
 154                 result = -EPERM;
 155                 goto fail_ioremap;
 156         }
 157
 158         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
 159                 (unsigned long)hcd->rsrc_start);
 160         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
 161                 (unsigned long)hcd->rsrc_len);
 162         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
 163                 (unsigned long)hcd->regs);
 164         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
 165                 (unsigned long)virq);
 166
 167         ps3_system_bus_set_drvdata(dev, hcd);
 168
 169         result = usb_add_hcd(hcd, virq, 0);
 170
 171         if (result) {
 172                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
 173                         __func__, __LINE__, result);
 174                 goto fail_add_hcd;
 175         }
 176
 177         device_wakeup_enable(hcd->self.controller);
 178         return result;
 179
 180 fail_add_hcd:
 181         iounmap(hcd->regs);
 182 fail_ioremap:
 183         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 184         usb_put_hcd(hcd);
 185 fail_create_hcd:
 186         ps3_io_irq_destroy(virq);
 187 fail_irq:
 188         ps3_free_mmio_region(dev->m_region);
 189 fail_mmio_region:
 190         ps3_dma_region_free(dev->d_region);
 191 fail_dma_region:
 192         ps3_close_hv_device(dev);
 193 fail_open:
 194 fail_start:
 195         return result;
 196 }
 197
 198 static int ps3_ohci_remove(struct ps3_system_bus_device *dev)
 199 {
 200         unsigned int tmp;
 201         struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
 202
 203         BUG_ON(!hcd);
 204
 205         dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
 206         dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
 207
 208         tmp = hcd->irq;
 209
 210         ohci_shutdown(hcd);
 211         usb_remove_hcd(hcd);
 212
 213         ps3_system_bus_set_drvdata(dev, NULL);
 214
 215         BUG_ON(!hcd->regs);
 216         iounmap(hcd->regs);
 217
 218         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 219         usb_put_hcd(hcd);
 220
 221         ps3_io_irq_destroy(tmp);
 222         ps3_free_mmio_region(dev->m_region);
 223
 224         ps3_dma_region_free(dev->d_region);
 225         ps3_close_hv_device(dev);
 226
 227         return 0;
 228 }
 229
 230 static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
 231 {
 232         return firmware_has_feature(FW_FEATURE_PS3_LV1)
 233                 ? ps3_system_bus_driver_register(drv)
 234                 : 0;
 235 }
 236
 237 static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
 238 {
 239         if (firmware_has_feature(FW_FEATURE_PS3_LV1))
 240                 ps3_system_bus_driver_unregister(drv);
 241 }
 242
 243 MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);
 244
 245 static struct ps3_system_bus_driver ps3_ohci_driver = {
 246         .core.name = "ps3-ohci-driver",
 247         .core.owner = THIS_MODULE,
 248         .match_id = PS3_MATCH_ID_OHCI,
 249         .probe = ps3_ohci_probe,
 250         .remove = ps3_ohci_remove,
 251         .shutdown = ps3_ohci_remove,
 252 };