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/ps3.h>
  22
  23 static int ps3_ehci_hc_reset(struct usb_hcd *hcd)
  24 {
  25         int result;
  26         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
  27
  28         ehci->big_endian_mmio = 1;
  29
  30         ehci->caps = hcd->regs;
  31         ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci,
  32                 &ehci->caps->hc_capbase));
  33
  34         dbg_hcs_params(ehci, "reset");
  35         dbg_hcc_params(ehci, "reset");
  36
  37         ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
  38
  39         result = ehci_halt(ehci);
  40
  41         if (result)
  42                 return result;
  43
  44         result = ehci_init(hcd);
  45
  46         if (result)
  47                 return result;
  48
  49         ehci_port_power(ehci, 0);
  50
  51         return result;
  52 }
  53
  54 static const struct hc_driver ps3_ehci_hc_driver = {
  55         .description            = hcd_name,
  56         .product_desc           = "PS3 EHCI Host Controller",
  57         .hcd_priv_size          = sizeof(struct ehci_hcd),
  58         .irq                    = ehci_irq,
  59         .flags                  = HCD_MEMORY | HCD_USB2,
  60         .reset                  = ps3_ehci_hc_reset,
  61         .start                  = ehci_run,
  62         .stop                   = ehci_stop,
  63         .shutdown               = ehci_shutdown,
  64         .urb_enqueue            = ehci_urb_enqueue,
  65         .urb_dequeue            = ehci_urb_dequeue,
  66         .endpoint_disable       = ehci_endpoint_disable,
  67         .get_frame_number       = ehci_get_frame,
  68         .hub_status_data        = ehci_hub_status_data,
  69         .hub_control            = ehci_hub_control,
  70 #if defined(CONFIG_PM)
  71         .bus_suspend            = ehci_bus_suspend,
  72         .bus_resume             = ehci_bus_resume,
  73 #endif
  74 };
  75
  76 static int ps3_ehci_sb_probe(struct ps3_system_bus_device *dev)
  77 {
  78         int result;
  79         struct usb_hcd *hcd;
  80         unsigned int virq;
  81         static u64 dummy_mask = DMA_32BIT_MASK;
  82
  83         if (usb_disabled()) {
  84                 result = -ENODEV;
  85                 goto fail_start;
  86         }
  87
  88         result = ps3_mmio_region_create(dev->m_region);
  89
  90         if (result) {
  91                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
  92                         __func__, __LINE__);
  93                 result = -EPERM;
  94                 goto fail_mmio;
  95         }
  96
  97         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
  98                 __LINE__, dev->m_region->lpar_addr);
  99
 100         result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
 101
 102         if (result) {
 103                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
 104                         __func__, __LINE__, virq);
 105                 result = -EPERM;
 106                 goto fail_irq;
 107         }
 108
 109         dev->core.power.power_state = PMSG_ON;
 110         dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
 111
 112         hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id);
 113
 114         if (!hcd) {
 115                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
 116                         __LINE__);
 117                 result = -ENOMEM;
 118                 goto fail_create_hcd;
 119         }
 120
 121         hcd->rsrc_start = dev->m_region->lpar_addr;
 122         hcd->rsrc_len = dev->m_region->len;
 123         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
 124
 125         if (!hcd->regs) {
 126                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
 127                         __LINE__);
 128                 result = -EPERM;
 129                 goto fail_ioremap;
 130         }
 131
 132         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
 133                 (unsigned long)hcd->rsrc_start);
 134         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
 135                 (unsigned long)hcd->rsrc_len);
 136         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
 137                 (unsigned long)hcd->regs);
 138         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
 139                 (unsigned long)virq);
 140
 141         ps3_system_bus_set_driver_data(dev, hcd);
 142
 143         result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
 144
 145         if (result) {
 146                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
 147                         __func__, __LINE__, result);
 148                 goto fail_add_hcd;
 149         }
 150
 151         return result;
 152
 153 fail_add_hcd:
 154         iounmap(hcd->regs);
 155 fail_ioremap:
 156         usb_put_hcd(hcd);
 157 fail_create_hcd:
 158         ps3_io_irq_destroy(virq);
 159 fail_irq:
 160         ps3_free_mmio_region(dev->m_region);
 161 fail_mmio:
 162 fail_start:
 163         return result;
 164 }
 165
 166 static int ps3_ehci_sb_remove(struct ps3_system_bus_device *dev)
 167 {
 168         struct usb_hcd *hcd =
 169                 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev);
 170
 171         usb_put_hcd(hcd);
 172         ps3_system_bus_set_driver_data(dev, NULL);
 173
 174         return 0;
 175 }
 176
 177 MODULE_ALIAS("ps3-ehci");
 178
 179 static struct ps3_system_bus_driver ps3_ehci_sb_driver = {
 180         .match_id = PS3_MATCH_ID_EHCI,
 181         .core = {
 182                 .name = "ps3-ehci-driver",
 183         },
 184         .probe = ps3_ehci_sb_probe,
 185         .remove = ps3_ehci_sb_remove,
 186 };