Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the libpayload project. |
| 3 | * |
Stefan Reinauer | b56f2d0 | 2010-03-25 22:17:36 +0000 | [diff] [blame] | 4 | * Copyright (C) 2008-2010 coresystems GmbH |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
Jordan Crouse | db8c0ab | 2008-11-24 17:54:46 +0000 | [diff] [blame] | 30 | #include <libpayload-config.h> |
Jordan Crouse | 29061a5 | 2008-09-11 17:29:00 +0000 | [diff] [blame] | 31 | #include <usb/usb.h> |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 32 | #include "uhci.h" |
Patrick Georgi | 6615ef3 | 2010-08-13 09:18:58 +0000 | [diff] [blame] | 33 | #include "ohci.h" |
Patrick Georgi | 7f43dc1 | 2010-09-25 17:01:13 +0000 | [diff] [blame] | 34 | #include "ehci.h" |
Patrick Georgi | 6615ef3 | 2010-08-13 09:18:58 +0000 | [diff] [blame] | 35 | #include "xhci.h" |
Jordan Crouse | 29061a5 | 2008-09-11 17:29:00 +0000 | [diff] [blame] | 36 | #include <usb/usbdisk.h> |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 37 | |
| 38 | /** |
| 39 | * Initializes USB controller attached to PCI |
| 40 | * |
| 41 | * @param bus PCI bus number |
| 42 | * @param dev PCI device id at bus |
| 43 | * @param func function id of the controller |
| 44 | */ |
Nico Huber | ba22e4c | 2012-11-23 11:34:20 +0100 | [diff] [blame] | 45 | static int usb_controller_initialize(int bus, int dev, int func) |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 46 | { |
| 47 | u32 class; |
| 48 | u32 devclass; |
| 49 | u32 prog_if; |
| 50 | pcidev_t addr; |
| 51 | u32 pciid; |
| 52 | |
| 53 | addr = PCI_DEV (bus, dev, func); |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 54 | class = pci_read_config32(addr, 8); |
| 55 | pciid = pci_read_config32(addr, 0); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 56 | |
| 57 | devclass = class >> 16; |
| 58 | prog_if = (class >> 8) & 0xff; |
| 59 | |
| 60 | /* enable busmaster */ |
| 61 | #define PCI_COMMAND 4 |
| 62 | #define PCI_COMMAND_MASTER 4 |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 63 | if (devclass == 0xc03) { |
Stefan Reinauer | b56f2d0 | 2010-03-25 22:17:36 +0000 | [diff] [blame] | 64 | u32 pci_command; |
| 65 | |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 66 | pci_command = pci_read_config32(addr, PCI_COMMAND); |
Stefan Reinauer | b56f2d0 | 2010-03-25 22:17:36 +0000 | [diff] [blame] | 67 | pci_command |= PCI_COMMAND_MASTER; |
| 68 | pci_write_config32(addr, PCI_COMMAND, pci_command); |
| 69 | |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 70 | usb_debug("%02x:%02x.%x %04x:%04x.%d ", bus, dev, func, |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 71 | pciid >> 16, pciid & 0xFFFF, func); |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 72 | switch (prog_if) { |
| 73 | case 0x00: |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 74 | #ifdef CONFIG_USB_UHCI |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 75 | usb_debug("UHCI controller\n"); |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 76 | uhci_init (addr); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 77 | #else |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 78 | usb_debug("UHCI controller (not supported)\n"); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 79 | #endif |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 80 | break; |
Steven A. Falco | 25f23f1 | 2011-07-13 21:59:31 -0400 | [diff] [blame] | 81 | |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 82 | case 0x10: |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 83 | #ifdef CONFIG_USB_OHCI |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 84 | usb_debug("OHCI controller\n"); |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 85 | ohci_init(addr); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 86 | #else |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 87 | usb_debug("OHCI controller (not supported)\n"); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 88 | #endif |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 89 | break; |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 90 | |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 91 | case 0x20: |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 92 | #ifdef CONFIG_USB_EHCI |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 93 | usb_debug("EHCI controller\n"); |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 94 | ehci_init(addr); |
Stefan Reinauer | b56f2d0 | 2010-03-25 22:17:36 +0000 | [diff] [blame] | 95 | #else |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 96 | usb_debug("EHCI controller (not supported)\n"); |
Stefan Reinauer | b56f2d0 | 2010-03-25 22:17:36 +0000 | [diff] [blame] | 97 | #endif |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 98 | break; |
Stefan Reinauer | b56f2d0 | 2010-03-25 22:17:36 +0000 | [diff] [blame] | 99 | |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 100 | case 0x30: |
Stefan Reinauer | b56f2d0 | 2010-03-25 22:17:36 +0000 | [diff] [blame] | 101 | #ifdef CONFIG_USB_XHCI |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 102 | usb_debug("xHCI controller\n"); |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 103 | xhci_init(addr); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 104 | #else |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 105 | usb_debug("xHCI controller (not supported)\n"); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 106 | #endif |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 107 | break; |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 108 | |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 109 | default: |
Dave Frodin | 6bf11cf | 2012-12-11 13:08:07 -0700 | [diff] [blame^] | 110 | usb_debug("unknown controller %x not supported\n", |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 111 | prog_if); |
| 112 | break; |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 113 | } |
| 114 | } |
| 115 | |
| 116 | return 0; |
| 117 | } |
| 118 | |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 119 | static void usb_scan_pci_bus(int bus) |
| 120 | { |
| 121 | int dev, func; |
| 122 | for (dev = 0; dev < 32; dev++) { |
| 123 | u8 header_type; |
| 124 | pcidev_t addr = PCI_DEV(bus, dev, 0); |
| 125 | /* Check if there's a device here at all. */ |
| 126 | if (pci_read_config32(addr, REG_VENDOR_ID) == 0xffff) |
| 127 | continue; |
| 128 | header_type = pci_read_config8(addr, REG_HEADER_TYPE); |
| 129 | /* If this is a bridge, scan the bus on the other side. */ |
| 130 | if ((header_type & ~HEADER_TYPE_MULTIFUNCTION) == |
| 131 | HEADER_TYPE_BRIDGE) { |
| 132 | int sub_bus = |
| 133 | pci_read_config8(addr, REG_SECONDARY_BUS); |
| 134 | usb_scan_pci_bus(sub_bus); |
| 135 | continue; |
| 136 | } |
| 137 | /* |
| 138 | * EHCI is defined by standards to be at a higher function |
| 139 | * than the USB1 controllers. We don't want to init USB1 + |
| 140 | * devices just to "steal" those for USB2, so make sure USB2 |
| 141 | * comes first. |
| 142 | */ |
| 143 | /* Check for a multifunction device. */ |
| 144 | if (header_type & HEADER_TYPE_MULTIFUNCTION) |
| 145 | for (func = 7; func > 0; func--) |
| 146 | usb_controller_initialize(bus, dev, func); |
| 147 | /* Initialize function 0. */ |
| 148 | usb_controller_initialize(bus, dev, 0); |
| 149 | } |
| 150 | } |
| 151 | |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 152 | /** |
| 153 | * Initialize all USB controllers attached to PCI. |
| 154 | */ |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 155 | int usb_initialize(void) |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 156 | { |
Gabe Black | 1b33c31 | 2012-10-08 01:58:37 -0700 | [diff] [blame] | 157 | usb_scan_pci_bus(0); |
Patrick Georgi | d21f68b | 2008-09-02 16:06:22 +0000 | [diff] [blame] | 158 | return 0; |
| 159 | } |