git.oblomov.eu Git - linux-2.6/blob - drivers/usb/host/ohci-ps3.c

   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(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 };