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 #if !defined(DEBUG)
  77 #undef dev_dbg
  78 static inline int __attribute__ ((format (printf, 2, 3))) dev_dbg(
  79         const struct device *_dev, const char *fmt, ...) {return 0;}
  80 #endif
  81
  82
  83 static int ps3_ehci_sb_probe(struct ps3_system_bus_device *dev)
  84 {
  85         int result;
  86         struct usb_hcd *hcd;
  87         unsigned int virq;
  88         static u64 dummy_mask = DMA_32BIT_MASK;
  89
  90         if (usb_disabled()) {
  91                 result = -ENODEV;
  92                 goto fail_start;
  93         }
  94
  95         result = ps3_mmio_region_create(dev->m_region);
  96
  97         if (result) {
  98                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
  99                         __func__, __LINE__);
 100                 result = -EPERM;
 101                 goto fail_mmio;
 102         }
 103
 104         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
 105                 __LINE__, dev->m_region->lpar_addr);
 106
 107         result = ps3_alloc_io_irq(dev->interrupt_id, &virq);
 108
 109         if (result) {
 110                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
 111                         __func__, __LINE__, virq);
 112                 result = -EPERM;
 113                 goto fail_irq;
 114         }
 115
 116         dev->core.power.power_state = PMSG_ON;
 117         dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
 118
 119         hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id);
 120
 121         if (!hcd) {
 122                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
 123                         __LINE__);
 124                 result = -ENOMEM;
 125                 goto fail_create_hcd;
 126         }
 127
 128         hcd->rsrc_start = dev->m_region->lpar_addr;
 129         hcd->rsrc_len = dev->m_region->len;
 130         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
 131
 132         if (!hcd->regs) {
 133                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
 134                         __LINE__);
 135                 result = -EPERM;
 136                 goto fail_ioremap;
 137         }
 138
 139         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
 140                 (unsigned long)hcd->rsrc_start);
 141         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
 142                 (unsigned long)hcd->rsrc_len);
 143         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
 144                 (unsigned long)hcd->regs);
 145         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
 146                 (unsigned long)virq);
 147
 148         ps3_system_bus_set_driver_data(dev, hcd);
 149
 150         result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
 151
 152         if (result) {
 153                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
 154                         __func__, __LINE__, result);
 155                 goto fail_add_hcd;
 156         }
 157
 158         return result;
 159
 160 fail_add_hcd:
 161         iounmap(hcd->regs);
 162 fail_ioremap:
 163         usb_put_hcd(hcd);
 164 fail_create_hcd:
 165         ps3_free_io_irq(virq);
 166 fail_irq:
 167         ps3_free_mmio_region(dev->m_region);
 168 fail_mmio:
 169 fail_start:
 170         return result;
 171 }
 172
 173 static int ps3_ehci_sb_remove(struct ps3_system_bus_device *dev)
 174 {
 175         struct usb_hcd *hcd =
 176                 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev);
 177
 178         usb_put_hcd(hcd);
 179         ps3_system_bus_set_driver_data(dev, NULL);
 180
 181         return 0;
 182 }
 183
 184 MODULE_ALIAS("ps3-ehci");
 185
 186 static struct ps3_system_bus_driver ps3_ehci_sb_driver = {
 187         .match_id = PS3_MATCH_ID_EHCI,
 188         .core = {
 189                 .name = "ps3-ehci-driver",
 190         },
 191         .probe = ps3_ehci_sb_probe,
 192         .remove = ps3_ehci_sb_remove,
 193 };