| /* |
| * This file is part of the libpayload project. |
| * |
| * Copyright (C) 2008-2010 coresystems GmbH |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| //#define USB_DEBUG |
| #include <libpayload-config.h> |
| #include <usb/usb.h> |
| #include "uhci.h" |
| #include "ohci.h" |
| #include "ehci.h" |
| #include "xhci.h" |
| #include <usb/usbdisk.h> |
| |
| #ifdef CONFIG_LP_USB_PCI |
| /** |
| * Initializes USB controller attached to PCI |
| * |
| * @param bus PCI bus number |
| * @param dev PCI device id at bus |
| * @param func function id of the controller |
| */ |
| static int usb_controller_initialize(int bus, int dev, int func) |
| { |
| u32 class; |
| u32 devclass; |
| u32 prog_if; |
| pcidev_t pci_device; |
| u32 pciid; |
| |
| pci_device = PCI_DEV (bus, dev, func); |
| class = pci_read_config32(pci_device, 8); |
| pciid = pci_read_config32(pci_device, 0); |
| |
| devclass = class >> 16; |
| prog_if = (class >> 8) & 0xff; |
| |
| /* enable busmaster */ |
| if (devclass == 0xc03) { |
| u32 pci_command; |
| |
| pci_command = pci_read_config32(pci_device, PCI_COMMAND); |
| pci_command |= PCI_COMMAND_MASTER; |
| pci_write_config32(pci_device, PCI_COMMAND, pci_command); |
| |
| usb_debug("%02x:%02x.%x %04x:%04x.%d ", bus, dev, func, |
| pciid >> 16, pciid & 0xFFFF, func); |
| switch (prog_if) { |
| case 0x00: |
| #ifdef CONFIG_LP_USB_UHCI |
| usb_debug("UHCI controller\n"); |
| uhci_pci_init (pci_device); |
| #else |
| usb_debug("UHCI controller (not supported)\n"); |
| #endif |
| break; |
| |
| case 0x10: |
| #ifdef CONFIG_LP_USB_OHCI |
| usb_debug("OHCI controller\n"); |
| ohci_pci_init(pci_device); |
| #else |
| usb_debug("OHCI controller (not supported)\n"); |
| #endif |
| break; |
| |
| case 0x20: |
| #ifdef CONFIG_LP_USB_EHCI |
| usb_debug("EHCI controller\n"); |
| ehci_pci_init(pci_device); |
| #else |
| usb_debug("EHCI controller (not supported)\n"); |
| #endif |
| break; |
| |
| case 0x30: |
| #ifdef CONFIG_LP_USB_XHCI |
| usb_debug("xHCI controller\n"); |
| xhci_pci_init(pci_device); |
| #else |
| usb_debug("xHCI controller (not supported)\n"); |
| #endif |
| break; |
| |
| default: |
| usb_debug("unknown controller %x not supported\n", |
| prog_if); |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void usb_scan_pci_bus(int bus) |
| { |
| int dev, func; |
| for (dev = 0; dev < 32; dev++) { |
| u8 header_type; |
| pcidev_t pci_device = PCI_DEV(bus, dev, 0); |
| |
| /* Check if there's a device here at all. */ |
| if (pci_read_config32(pci_device, REG_VENDOR_ID) == 0xffffffff) |
| continue; |
| |
| /* |
| * EHCI is defined by standards to be at a higher function |
| * than the USB1 controllers. We don't want to init USB1 + |
| * devices just to "steal" those for USB2, so make sure USB2 |
| * comes first by scanning multifunction devices from 7 to 0. |
| */ |
| |
| /* Check for a multifunction device. */ |
| header_type = pci_read_config8(pci_device, REG_HEADER_TYPE); |
| if (header_type & HEADER_TYPE_MULTIFUNCTION) |
| func = 7; |
| else |
| func = 0; |
| |
| for (; func >= 0; func--) { |
| pci_device = PCI_DEV(bus, dev, func); |
| header_type = pci_read_config8(pci_device, REG_HEADER_TYPE); |
| /* If this is a bridge, scan the other side. */ |
| if ((header_type & ~HEADER_TYPE_MULTIFUNCTION) == |
| HEADER_TYPE_BRIDGE) |
| usb_scan_pci_bus(pci_read_config8(pci_device, |
| REG_SECONDARY_BUS)); |
| else |
| usb_controller_initialize(bus, dev, func); |
| } |
| } |
| } |
| #endif |
| |
| /** |
| * Initialize all USB controllers attached to PCI. |
| */ |
| int usb_initialize(void) |
| { |
| #ifdef CONFIG_LP_USB_PCI |
| usb_scan_pci_bus(0); |
| #endif |
| return 0; |
| } |
| |
| hci_t *usb_add_mmio_hc(hc_type type, void *bar) |
| { |
| switch (type) { |
| #ifdef CONFIG_LP_USB_OHCI |
| case OHCI: |
| return ohci_init(bar); |
| #endif |
| #ifdef CONFIG_LP_USB_EHCI |
| case EHCI: |
| return ehci_init(bar); |
| #endif |
| #ifdef CONFIG_LP_USB_XHCI |
| case XHCI: |
| return xhci_init(bar); |
| #endif |
| default: |
| usb_debug("HC type %d (at %p) is not supported!\n", type, bar); |
| return NULL; |
| } |
| } |