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         .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
  78 static 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.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
 129
 130         hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id);
 131
 132         if (!hcd) {
 133                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
 134                         __LINE__);
 135                 result = -ENOMEM;
 136                 goto fail_create_hcd;
 137         }
 138
 139         hcd->rsrc_start = dev->m_region->lpar_addr;
 140         hcd->rsrc_len = dev->m_region->len;
 141
 142         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
 143                 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
 144                         __func__, __LINE__);
 145
 146         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
 147
 148         if (!hcd->regs) {
 149                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
 150                         __LINE__);
 151                 result = -EPERM;
 152                 goto fail_ioremap;
 153         }
 154
 155         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
 156                 (unsigned long)hcd->rsrc_start);
 157         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
 158                 (unsigned long)hcd->rsrc_len);
 159         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
 160                 (unsigned long)hcd->regs);
 161         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
 162                 (unsigned long)virq);
 163
 164         ps3_system_bus_set_driver_data(dev, hcd);
 165
 166         result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
 167
 168         if (result) {
 169                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
 170                         __func__, __LINE__, result);
 171                 goto fail_add_hcd;
 172         }
 173
 174         return result;
 175
 176 fail_add_hcd:
 177         iounmap(hcd->regs);
 178 fail_ioremap:
 179         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 180         usb_put_hcd(hcd);
 181 fail_create_hcd:
 182         ps3_io_irq_destroy(virq);
 183 fail_irq:
 184         ps3_free_mmio_region(dev->m_region);
 185 fail_mmio_region:
 186         ps3_dma_region_free(dev->d_region);
 187 fail_dma_region:
 188         ps3_close_hv_device(dev);
 189 fail_open:
 190 fail_start:
 191         return result;
 192 }
 193
 194 static int ps3_ehci_remove(struct ps3_system_bus_device *dev)
 195 {
 196         unsigned int tmp;
 197         struct usb_hcd *hcd =
 198                 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev);
 199
 200         BUG_ON(!hcd);
 201
 202         dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
 203         dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
 204
 205         tmp = hcd->irq;
 206
 207         usb_remove_hcd(hcd);
 208
 209         ps3_system_bus_set_driver_data(dev, NULL);
 210
 211         BUG_ON(!hcd->regs);
 212         iounmap(hcd->regs);
 213
 214         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 215         usb_put_hcd(hcd);
 216
 217         ps3_io_irq_destroy(tmp);
 218         ps3_free_mmio_region(dev->m_region);
 219
 220         ps3_dma_region_free(dev->d_region);
 221         ps3_close_hv_device(dev);
 222
 223         return 0;
 224 }
 225
 226 static int ps3_ehci_driver_register(struct ps3_system_bus_driver *drv)
 227 {
 228         return firmware_has_feature(FW_FEATURE_PS3_LV1)
 229                 ? ps3_system_bus_driver_register(drv)
 230                 : 0;
 231 }
 232
 233 static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv)
 234 {
 235         if (firmware_has_feature(FW_FEATURE_PS3_LV1))
 236                 ps3_system_bus_driver_unregister(drv);
 237 }
 238
 239 MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI);
 240
 241 static struct ps3_system_bus_driver ps3_ehci_driver = {
 242         .core.name = "ps3-ehci-driver",
 243         .core.owner = THIS_MODULE,
 244         .match_id = PS3_MATCH_ID_EHCI,
 245         .probe = ps3_ehci_probe,
 246         .remove = ps3_ehci_remove,
 247         .shutdown = ps3_ehci_remove,
 248 };