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 static int ps3_ohci_sb_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_mmio_region_create(dev->m_region);
  91
  92         if (result) {
  93                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
  94                         __func__, __LINE__);
  95                 result = -EPERM;
  96                 goto fail_mmio;
  97         }
  98
  99         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
 100                 __LINE__, dev->m_region->lpar_addr);
 101
 102         result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
 103
 104         if (result) {
 105                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
 106                         __func__, __LINE__, virq);
 107                 result = -EPERM;
 108                 goto fail_irq;
 109         }
 110
 111         dev->core.power.power_state = PMSG_ON;
 112         dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
 113
 114         hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev->core.bus_id);
 115
 116         if (!hcd) {
 117                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
 118                         __LINE__);
 119                 result = -ENOMEM;
 120                 goto fail_create_hcd;
 121         }
 122
 123         hcd->rsrc_start = dev->m_region->lpar_addr;
 124         hcd->rsrc_len = dev->m_region->len;
 125         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
 126
 127         if (!hcd->regs) {
 128                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
 129                         __LINE__);
 130                 result = -EPERM;
 131                 goto fail_ioremap;
 132         }
 133
 134         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
 135                 (unsigned long)hcd->rsrc_start);
 136         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
 137                 (unsigned long)hcd->rsrc_len);
 138         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
 139                 (unsigned long)hcd->regs);
 140         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
 141                 (unsigned long)virq);
 142
 143         ps3_system_bus_set_driver_data(dev, hcd);
 144
 145         result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
 146
 147         if (result) {
 148                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
 149                         __func__, __LINE__, result);
 150                 goto fail_add_hcd;
 151         }
 152
 153         return result;
 154
 155 fail_add_hcd:
 156         iounmap(hcd->regs);
 157 fail_ioremap:
 158         usb_put_hcd(hcd);
 159 fail_create_hcd:
 160         ps3_io_irq_destroy(virq);
 161 fail_irq:
 162         ps3_free_mmio_region(dev->m_region);
 163 fail_mmio:
 164 fail_start:
 165         return result;
 166 }
 167
 168 static int ps3_ohci_sb_remove (struct ps3_system_bus_device *dev)
 169 {
 170         struct usb_hcd *hcd =
 171                 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev);
 172
 173         usb_put_hcd(hcd);
 174         ps3_system_bus_set_driver_data(dev, NULL);
 175
 176         return 0;
 177 }
 178
 179 MODULE_ALIAS("ps3-ohci");
 180
 181 static struct ps3_system_bus_driver ps3_ohci_sb_driver = {
 182         .match_id = PS3_MATCH_ID_OHCI,
 183         .core = {
 184                 .name = "ps3-ohci-driver",
 185         },
 186         .probe = ps3_ohci_sb_probe,
 187         .remove = ps3_ohci_sb_remove,
 188 };