Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * xHCI host controller driver PCI Bus Glue. |
| 3 | * |
| 4 | * Copyright (C) 2008 Intel Corp. |
| 5 | * |
| 6 | * Author: Sarah Sharp |
| 7 | * Some code borrowed from the Linux EHCI driver. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 16 | * for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software Foundation, |
| 20 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | */ |
| 22 | |
| 23 | #include <linux/pci.h> |
| 24 | |
| 25 | #include "xhci.h" |
| 26 | |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 27 | /* Device for a quirk */ |
| 28 | #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73 |
| 29 | #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000 |
| 30 | |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 31 | static const char hcd_name[] = "xhci_hcd"; |
| 32 | |
| 33 | /* called after powerup, by probe or system-pm "wakeup" */ |
| 34 | static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) |
| 35 | { |
| 36 | /* |
| 37 | * TODO: Implement finding debug ports later. |
| 38 | * TODO: see if there are any quirks that need to be added to handle |
| 39 | * new extended capabilities. |
| 40 | */ |
| 41 | |
| 42 | /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */ |
| 43 | if (!pci_set_mwi(pdev)) |
| 44 | xhci_dbg(xhci, "MWI active\n"); |
| 45 | |
| 46 | xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); |
| 47 | return 0; |
| 48 | } |
| 49 | |
| 50 | /* called during probe() after chip reset completes */ |
| 51 | static int xhci_pci_setup(struct usb_hcd *hcd) |
| 52 | { |
| 53 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 54 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
| 55 | int retval; |
| 56 | |
Sarah Sharp | bc88d2e | 2010-05-18 16:05:21 -0700 | [diff] [blame] | 57 | hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 2; |
David Vrabel | 4c1bd3d | 2009-08-24 14:44:30 +0100 | [diff] [blame] | 58 | |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 59 | xhci->cap_regs = hcd->regs; |
| 60 | xhci->op_regs = hcd->regs + |
| 61 | HC_LENGTH(xhci_readl(xhci, &xhci->cap_regs->hc_capbase)); |
| 62 | xhci->run_regs = hcd->regs + |
| 63 | (xhci_readl(xhci, &xhci->cap_regs->run_regs_off) & RTSOFF_MASK); |
| 64 | /* Cache read-only capability registers */ |
| 65 | xhci->hcs_params1 = xhci_readl(xhci, &xhci->cap_regs->hcs_params1); |
| 66 | xhci->hcs_params2 = xhci_readl(xhci, &xhci->cap_regs->hcs_params2); |
| 67 | xhci->hcs_params3 = xhci_readl(xhci, &xhci->cap_regs->hcs_params3); |
Sarah Sharp | ac1c1b7 | 2009-09-04 10:53:20 -0700 | [diff] [blame] | 68 | xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hc_capbase); |
| 69 | xhci->hci_version = HC_VERSION(xhci->hcc_params); |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 70 | xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params); |
| 71 | xhci_print_registers(xhci); |
| 72 | |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 73 | /* Look for vendor-specific quirks */ |
| 74 | if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && |
| 75 | pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK && |
| 76 | pdev->revision == 0x0) { |
| 77 | xhci->quirks |= XHCI_RESET_EP_QUIRK; |
| 78 | xhci_dbg(xhci, "QUIRK: Fresco Logic xHC needs configure" |
| 79 | " endpoint cmd after reset endpoint\n"); |
| 80 | } |
Sarah Sharp | 0238634 | 2010-05-24 13:25:28 -0700 | [diff] [blame] | 81 | if (pdev->vendor == PCI_VENDOR_ID_NEC) |
| 82 | xhci->quirks |= XHCI_NEC_HOST; |
Sarah Sharp | ac9d8fe | 2009-08-07 14:04:55 -0700 | [diff] [blame] | 83 | |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 84 | /* Make sure the HC is halted. */ |
| 85 | retval = xhci_halt(xhci); |
| 86 | if (retval) |
| 87 | return retval; |
| 88 | |
| 89 | xhci_dbg(xhci, "Resetting HCD\n"); |
| 90 | /* Reset the internal HC memory state and registers. */ |
| 91 | retval = xhci_reset(xhci); |
| 92 | if (retval) |
| 93 | return retval; |
| 94 | xhci_dbg(xhci, "Reset complete\n"); |
| 95 | |
| 96 | xhci_dbg(xhci, "Calling HCD init\n"); |
| 97 | /* Initialize HCD and host controller data structures. */ |
| 98 | retval = xhci_init(hcd); |
| 99 | if (retval) |
| 100 | return retval; |
| 101 | xhci_dbg(xhci, "Called HCD init\n"); |
| 102 | |
| 103 | pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn); |
| 104 | xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn); |
| 105 | |
| 106 | /* Find any debug ports */ |
| 107 | return xhci_pci_reinit(xhci, pdev); |
| 108 | } |
| 109 | |
| 110 | static const struct hc_driver xhci_pci_hc_driver = { |
| 111 | .description = hcd_name, |
| 112 | .product_desc = "xHCI Host Controller", |
| 113 | .hcd_priv_size = sizeof(struct xhci_hcd), |
| 114 | |
| 115 | /* |
| 116 | * generic hardware linkage |
| 117 | */ |
Sarah Sharp | 7f84eef | 2009-04-27 19:53:56 -0700 | [diff] [blame] | 118 | .irq = xhci_irq, |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 119 | .flags = HCD_MEMORY | HCD_USB3, |
| 120 | |
| 121 | /* |
| 122 | * basic lifecycle operations |
| 123 | */ |
| 124 | .reset = xhci_pci_setup, |
| 125 | .start = xhci_run, |
| 126 | /* suspend and resume implemented later */ |
| 127 | .stop = xhci_stop, |
| 128 | .shutdown = xhci_shutdown, |
| 129 | |
| 130 | /* |
Sarah Sharp | 3ffbba9 | 2009-04-27 19:57:38 -0700 | [diff] [blame] | 131 | * managing i/o requests and associated device resources |
| 132 | */ |
Sarah Sharp | d0e96f5a | 2009-04-27 19:58:01 -0700 | [diff] [blame] | 133 | .urb_enqueue = xhci_urb_enqueue, |
| 134 | .urb_dequeue = xhci_urb_dequeue, |
Sarah Sharp | 3ffbba9 | 2009-04-27 19:57:38 -0700 | [diff] [blame] | 135 | .alloc_dev = xhci_alloc_dev, |
| 136 | .free_dev = xhci_free_dev, |
Sarah Sharp | eab1caf | 2010-04-05 10:55:58 -0700 | [diff] [blame] | 137 | .alloc_streams = xhci_alloc_streams, |
| 138 | .free_streams = xhci_free_streams, |
Sarah Sharp | f94e0186 | 2009-04-27 19:58:38 -0700 | [diff] [blame] | 139 | .add_endpoint = xhci_add_endpoint, |
| 140 | .drop_endpoint = xhci_drop_endpoint, |
Sarah Sharp | a1587d9 | 2009-07-27 12:03:15 -0700 | [diff] [blame] | 141 | .endpoint_reset = xhci_endpoint_reset, |
Sarah Sharp | f94e0186 | 2009-04-27 19:58:38 -0700 | [diff] [blame] | 142 | .check_bandwidth = xhci_check_bandwidth, |
| 143 | .reset_bandwidth = xhci_reset_bandwidth, |
Sarah Sharp | 3ffbba9 | 2009-04-27 19:57:38 -0700 | [diff] [blame] | 144 | .address_device = xhci_address_device, |
Sarah Sharp | b356b7c | 2009-09-04 10:53:24 -0700 | [diff] [blame] | 145 | .update_hub_device = xhci_update_hub_device, |
Sarah Sharp | a5f0efa | 2009-12-09 15:59:17 -0800 | [diff] [blame] | 146 | .reset_device = xhci_reset_device, |
Sarah Sharp | 3ffbba9 | 2009-04-27 19:57:38 -0700 | [diff] [blame] | 147 | |
| 148 | /* |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 149 | * scheduling support |
| 150 | */ |
| 151 | .get_frame_number = xhci_get_frame, |
| 152 | |
Sarah Sharp | 0f2a793 | 2009-04-27 19:57:12 -0700 | [diff] [blame] | 153 | /* Root hub support */ |
| 154 | .hub_control = xhci_hub_control, |
| 155 | .hub_status_data = xhci_hub_status_data, |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 156 | }; |
| 157 | |
| 158 | /*-------------------------------------------------------------------------*/ |
| 159 | |
| 160 | /* PCI driver selection metadata; PCI hotplugging uses this */ |
| 161 | static const struct pci_device_id pci_ids[] = { { |
| 162 | /* handle any USB 3.0 xHCI controller */ |
| 163 | PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0), |
| 164 | .driver_data = (unsigned long) &xhci_pci_hc_driver, |
| 165 | }, |
| 166 | { /* end: all zeroes */ } |
| 167 | }; |
| 168 | MODULE_DEVICE_TABLE(pci, pci_ids); |
| 169 | |
| 170 | /* pci driver glue; this is a "new style" PCI driver module */ |
| 171 | static struct pci_driver xhci_pci_driver = { |
| 172 | .name = (char *) hcd_name, |
| 173 | .id_table = pci_ids, |
| 174 | |
| 175 | .probe = usb_hcd_pci_probe, |
| 176 | .remove = usb_hcd_pci_remove, |
| 177 | /* suspend and resume implemented later */ |
| 178 | |
| 179 | .shutdown = usb_hcd_pci_shutdown, |
| 180 | }; |
| 181 | |
Randy Dunlap | 326b481 | 2010-04-19 08:53:50 -0700 | [diff] [blame] | 182 | int xhci_register_pci(void) |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 183 | { |
| 184 | return pci_register_driver(&xhci_pci_driver); |
| 185 | } |
| 186 | |
Randy Dunlap | 326b481 | 2010-04-19 08:53:50 -0700 | [diff] [blame] | 187 | void xhci_unregister_pci(void) |
Sarah Sharp | 66d4ead | 2009-04-27 19:52:28 -0700 | [diff] [blame] | 188 | { |
| 189 | pci_unregister_driver(&xhci_pci_driver); |
| 190 | } |