release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/usb/host/ehci-ps3.c

   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 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
  55 static 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         .endpoint_reset         = ehci_endpoint_reset,
  69         .get_frame_number       = ehci_get_frame,
  70         .hub_status_data        = ehci_hub_status_data,
  71         .hub_control            = ehci_hub_control,
  72 #if defined(CONFIG_PM)
  73         .bus_suspend            = ehci_bus_suspend,
  74         .bus_resume             = ehci_bus_resume,
  75 #endif
  76         .relinquish_port        = ehci_relinquish_port,
  77         .port_handed_over       = ehci_port_handed_over,
  78
  79         .clear_tt_buffer_complete       = ehci_clear_tt_buffer_complete,
  80 };
  81
  82 static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev)
  83 {
  84         int result;
  85         struct usb_hcd *hcd;
  86         unsigned int virq;
  87         static u64 dummy_mask = DMA_BIT_MASK(32);
  88
  89         if (usb_disabled()) {
  90                 result = -ENODEV;
  91                 goto fail_start;
  92         }
  93
  94         result = ps3_open_hv_device(dev);
  95
  96         if (result) {
  97                 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n",
  98                         __func__, __LINE__);
  99                 goto fail_open;
 100         }
 101
 102         result = ps3_dma_region_create(dev->d_region);
 103
 104         if (result) {
 105                 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
 106                         "(%d)\n", __func__, __LINE__, result);
 107                 BUG_ON("check region type");
 108                 goto fail_dma_region;
 109         }
 110
 111         result = ps3_mmio_region_create(dev->m_region);
 112
 113         if (result) {
 114                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
 115                         __func__, __LINE__);
 116                 result = -EPERM;
 117                 goto fail_mmio_region;
 118         }
 119
 120         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
 121                 __LINE__, dev->m_region->lpar_addr);
 122
 123         result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
 124
 125         if (result) {
 126                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
 127                         __func__, __LINE__, virq);
 128                 result = -EPERM;
 129                 goto fail_irq;
 130         }
 131
 132         dev->core.dma_mask = &dummy_mask;
 133
 134         hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core));
 135
 136         if (!hcd) {
 137                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
 138                         __LINE__);
 139                 result = -ENOMEM;
 140                 goto fail_create_hcd;
 141         }
 142
 143         hcd->rsrc_start = dev->m_region->lpar_addr;
 144         hcd->rsrc_len = dev->m_region->len;
 145
 146         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
 147                 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
 148                         __func__, __LINE__);
 149
 150         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
 151
 152         if (!hcd->regs) {
 153                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
 154                         __LINE__);
 155                 result = -EPERM;
 156                 goto fail_ioremap;
 157         }
 158
 159         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
 160                 (unsigned long)hcd->rsrc_start);
 161         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
 162                 (unsigned long)hcd->rsrc_len);
 163         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
 164                 (unsigned long)hcd->regs);
 165         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
 166                 (unsigned long)virq);
 167
 168         ps3_system_bus_set_drvdata(dev, hcd);
 169
 170         result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
 171
 172         if (result) {
 173                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
 174                         __func__, __LINE__, result);
 175                 goto fail_add_hcd;
 176         }
 177
 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_ehci_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         ehci_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_ehci_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_ehci_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_EHCI);
 244
 245 static struct ps3_system_bus_driver ps3_ehci_driver = {
 246         .core.name = "ps3-ehci-driver",
 247         .core.owner = THIS_MODULE,
 248         .match_id = PS3_MATCH_ID_EHCI,
 249         .probe = ps3_ehci_probe,
 250         .remove = ps3_ehci_remove,
 251         .shutdown = ps3_ehci_remove,
 252 };