drivers/usb/host/ohci-ps3.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  PS3 OHCI Host Controller driver
   4  *
   5  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   6  *  Copyright 2006 Sony Corp.
   7  */
   8
   9 #include <asm/firmware.h>
  10 #include <asm/ps3.h>
  11
  12 static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
  13 {
  14         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  15
  16         ohci->flags |= OHCI_QUIRK_BE_MMIO;
  17         ohci_hcd_init(ohci);
  18         return ohci_init(ohci);
  19 }
  20
  21 static int ps3_ohci_hc_start(struct usb_hcd *hcd)
  22 {
  23         int result;
  24         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  25
  26         /* Handle root hub init quirk in spider south bridge. */
  27         /* Also set PwrOn2PwrGood to 0x7f (254ms). */
  28
  29         ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
  30                 &ohci->regs->roothub.a);
  31         ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
  32
  33         result = ohci_run(ohci);
  34
  35         if (result < 0) {
  36                 dev_err(hcd->self.controller, "can't start %s\n",
  37                         hcd->self.bus_name);
  38                 ohci_stop(hcd);
  39         }
  40
  41         return result;
  42 }
  43
  44 static const struct hc_driver ps3_ohci_hc_driver = {
  45         .description            = hcd_name,
  46         .product_desc           = "PS3 OHCI Host Controller",
  47         .hcd_priv_size          = sizeof(struct ohci_hcd),
  48         .irq                    = ohci_irq,
  49         .flags                  = HCD_MEMORY | HCD_USB11,
  50         .reset                  = ps3_ohci_hc_reset,
  51         .start                  = ps3_ohci_hc_start,
  52         .stop                   = ohci_stop,
  53         .shutdown               = ohci_shutdown,
  54         .urb_enqueue            = ohci_urb_enqueue,
  55         .urb_dequeue            = ohci_urb_dequeue,
  56         .endpoint_disable       = ohci_endpoint_disable,
  57         .get_frame_number       = ohci_get_frame,
  58         .hub_status_data        = ohci_hub_status_data,
  59         .hub_control            = ohci_hub_control,
  60         .start_port_reset       = ohci_start_port_reset,
  61 #if defined(CONFIG_PM)
  62         .bus_suspend            = ohci_bus_suspend,
  63         .bus_resume             = ohci_bus_resume,
  64 #endif
  65 };
  66
  67 static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
  68 {
  69         int result;
  70         struct usb_hcd *hcd;
  71         unsigned int virq;
  72         static u64 dummy_mask;
  73
  74         if (usb_disabled()) {
  75                 result = -ENODEV;
  76                 goto fail_start;
  77         }
  78
  79         result = ps3_open_hv_device(dev);
  80
  81         if (result) {
  82                 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
  83                         __func__, __LINE__, ps3_result(result));
  84                 result = -EPERM;
  85                 goto fail_open;
  86         }
  87
  88         result = ps3_dma_region_create(dev->d_region);
  89
  90         if (result) {
  91                 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
  92                         "(%d)\n", __func__, __LINE__, result);
  93                 BUG_ON("check region type");
  94                 goto fail_dma_region;
  95         }
  96
  97         result = ps3_mmio_region_create(dev->m_region);
  98
  99         if (result) {
 100                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
 101                         __func__, __LINE__);
 102                 result = -EPERM;
 103                 goto fail_mmio_region;
 104         }
 105
 106         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
 107                 __LINE__, dev->m_region->lpar_addr);
 108
 109         result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
 110
 111         if (result) {
 112                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
 113                         __func__, __LINE__, virq);
 114                 result = -EPERM;
 115                 goto fail_irq;
 116         }
 117
 118         dummy_mask = DMA_BIT_MASK(32);
 119         dev->core.dma_mask = &dummy_mask;
 120         dma_set_coherent_mask(&dev->core, dummy_mask);
 121
 122         hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
 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
 134         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
 135                 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
 136                         __func__, __LINE__);
 137
 138         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
 139
 140         if (!hcd->regs) {
 141                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
 142                         __LINE__);
 143                 result = -EPERM;
 144                 goto fail_ioremap;
 145         }
 146
 147         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
 148                 (unsigned long)hcd->rsrc_start);
 149         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
 150                 (unsigned long)hcd->rsrc_len);
 151         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
 152                 (unsigned long)hcd->regs);
 153         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
 154                 (unsigned long)virq);
 155
 156         ps3_system_bus_set_drvdata(dev, hcd);
 157
 158         result = usb_add_hcd(hcd, virq, 0);
 159
 160         if (result) {
 161                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
 162                         __func__, __LINE__, result);
 163                 goto fail_add_hcd;
 164         }
 165
 166         device_wakeup_enable(hcd->self.controller);
 167         return result;
 168
 169 fail_add_hcd:
 170         iounmap(hcd->regs);
 171 fail_ioremap:
 172         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 173         usb_put_hcd(hcd);
 174 fail_create_hcd:
 175         ps3_io_irq_destroy(virq);
 176 fail_irq:
 177         ps3_free_mmio_region(dev->m_region);
 178 fail_mmio_region:
 179         ps3_dma_region_free(dev->d_region);
 180 fail_dma_region:
 181         ps3_close_hv_device(dev);
 182 fail_open:
 183 fail_start:
 184         return result;
 185 }
 186
 187 static int ps3_ohci_remove(struct ps3_system_bus_device *dev)
 188 {
 189         unsigned int tmp;
 190         struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
 191
 192         BUG_ON(!hcd);
 193
 194         dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
 195         dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
 196
 197         tmp = hcd->irq;
 198
 199         ohci_shutdown(hcd);
 200         usb_remove_hcd(hcd);
 201
 202         ps3_system_bus_set_drvdata(dev, NULL);
 203
 204         BUG_ON(!hcd->regs);
 205         iounmap(hcd->regs);
 206
 207         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 208         usb_put_hcd(hcd);
 209
 210         ps3_io_irq_destroy(tmp);
 211         ps3_free_mmio_region(dev->m_region);
 212
 213         ps3_dma_region_free(dev->d_region);
 214         ps3_close_hv_device(dev);
 215
 216         return 0;
 217 }
 218
 219 static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
 220 {
 221         return firmware_has_feature(FW_FEATURE_PS3_LV1)
 222                 ? ps3_system_bus_driver_register(drv)
 223                 : 0;
 224 }
 225
 226 static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
 227 {
 228         if (firmware_has_feature(FW_FEATURE_PS3_LV1))
 229                 ps3_system_bus_driver_unregister(drv);
 230 }
 231
 232 MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);
 233
 234 static struct ps3_system_bus_driver ps3_ohci_driver = {
 235         .core.name = "ps3-ohci-driver",
 236         .core.owner = THIS_MODULE,
 237         .match_id = PS3_MATCH_ID_OHCI,
 238         .probe = ps3_ohci_probe,
 239         .remove = ps3_ohci_remove,
 240         .shutdown = ps3_ohci_remove,
 241 };