| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2006 Eric Biederman (ebiederm@xmission.com) |
| * Copyright (C) 2007 AMD |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <stddef.h> |
| #include <console/console.h> |
| #include <device/pci_ehci.h> |
| #include <arch/io.h> |
| #include <device/pci.h> |
| #include <device/pci_def.h> |
| #include <string.h> |
| |
| #include "ehci_debug.h" |
| #include "ehci.h" |
| |
| #if ENV_RAMSTAGE |
| static struct device_operations *ehci_drv_ops; |
| static struct device_operations ehci_dbg_ops; |
| #endif |
| |
| int ehci_debug_hw_enable(unsigned int *base, unsigned int *dbg_offset) |
| { |
| pci_devfn_t dbg_dev = pci_ehci_dbg_dev(CONFIG_USBDEBUG_HCD_INDEX); |
| |
| /* We only support controllers on bus 0. */ |
| if (PCI_DEV2SEGBUS(dbg_dev) != 0) |
| return -1; |
| |
| #ifdef __SIMPLE_DEVICE__ |
| pci_devfn_t dev = dbg_dev; |
| #else |
| struct device *dev = pcidev_path_on_root(PCI_DEV2DEVFN(dbg_dev)); |
| #endif |
| |
| u32 class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8; |
| if (class != PCI_EHCI_CLASSCODE) |
| return -1; |
| |
| u8 pm_cap = pci_find_capability(dev, PCI_CAP_ID_PM); |
| if (pm_cap) { |
| u16 pm_ctrl = pci_read_config16(dev, pm_cap + PCI_PM_CTRL); |
| /* Set to D0 and disable PM events. */ |
| pm_ctrl &= ~PCI_PM_CTRL_PME_ENABLE; |
| pm_ctrl &= ~PCI_PM_CTRL_STATE_MASK; |
| pci_write_config16(dev, pm_cap + PCI_PM_CTRL, pm_ctrl); |
| } |
| |
| u8 pos = pci_find_capability(dev, PCI_CAP_ID_EHCI_DEBUG); |
| if (!pos) |
| return -1; |
| |
| u32 cap = pci_read_config32(dev, pos); |
| |
| /* FIXME: We should remove static EHCI_BAR_INDEX. */ |
| u8 ehci_bar = 0x10 + 4 * ((cap >> 29) - 1); |
| if (ehci_bar != EHCI_BAR_INDEX) |
| return -1; |
| |
| pci_write_config32(dev, ehci_bar, CONFIG_EHCI_BAR); |
| |
| pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY | |
| PCI_COMMAND_MASTER); |
| |
| *base = CONFIG_EHCI_BAR; |
| *dbg_offset = (cap>>16) & 0x1ffc; |
| |
| return 0; |
| } |
| |
| void ehci_debug_select_port(unsigned int port) |
| { |
| pci_devfn_t dbg_dev = pci_ehci_dbg_dev(CONFIG_USBDEBUG_HCD_INDEX); |
| pci_ehci_dbg_set_port(dbg_dev, port); |
| } |
| |
| #if ENV_RAMSTAGE |
| static void pci_ehci_set_resources(struct device *dev) |
| { |
| struct resource *res; |
| |
| printk(BIOS_DEBUG, "%s EHCI Debug Port hook triggered\n", dev_path(dev)); |
| usbdebug_disable(); |
| |
| if (ehci_drv_ops->set_resources) |
| ehci_drv_ops->set_resources(dev); |
| res = find_resource(dev, EHCI_BAR_INDEX); |
| if (!res) |
| return; |
| |
| usbdebug_re_enable((u32)res->base); |
| report_resource_stored(dev, res, ""); |
| printk(BIOS_DEBUG, "%s EHCI Debug Port relocated\n", dev_path(dev)); |
| } |
| |
| void pci_ehci_read_resources(struct device *dev) |
| { |
| pci_devfn_t dbg_dev = pci_ehci_dbg_dev(CONFIG_USBDEBUG_HCD_INDEX); |
| |
| if (!ehci_drv_ops && pci_match_simple_dev(dev, dbg_dev)) { |
| memcpy(&ehci_dbg_ops, dev->ops, sizeof(ehci_dbg_ops)); |
| ehci_drv_ops = dev->ops; |
| ehci_dbg_ops.set_resources = pci_ehci_set_resources; |
| dev->ops = &ehci_dbg_ops; |
| printk(BIOS_DEBUG, "%s EHCI BAR hook registered\n", dev_path(dev)); |
| } else { |
| printk(BIOS_DEBUG, "More than one caller of %s from %s\n", __func__, dev_path(dev)); |
| } |
| |
| pci_dev_read_resources(dev); |
| } |
| #endif |
| |
| u8 *pci_ehci_base_regs(pci_devfn_t sdev) |
| { |
| #ifdef __SIMPLE_DEVICE__ |
| u8 *base = (u8 *)(pci_read_config32(sdev, EHCI_BAR_INDEX) & ~0x0f); |
| #else |
| struct device *dev = pcidev_path_on_root(PCI_DEV2DEVFN(sdev)); |
| u8 *base = (u8 *)(pci_read_config32(dev, EHCI_BAR_INDEX) & ~0x0f); |
| #endif |
| return base + HC_LENGTH(read32(base)); |
| } |