| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008-2009 coresystems GmbH |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include "pch.h" |
| #include <usbdebug.h> |
| #include <arch/io.h> |
| |
| #ifdef __SMM__ |
| |
| void usb_ehci_disable(device_t dev) |
| { |
| u16 reg16; |
| u32 reg32; |
| |
| /* Set 0xDC[0]=1 */ |
| pci_or_config32(dev, 0xdc, (1 << 0)); |
| |
| /* Set D3Hot state and disable PME */ |
| reg16 = pci_read_config16(dev, EHCI_PWR_CTL_STS); |
| reg16 &= ~(PWR_CTL_ENABLE_PME | PWR_CTL_SET_MASK); |
| reg16 |= PWR_CTL_SET_D3; |
| pci_write_config16(dev, EHCI_PWR_CTL_STS, reg16); |
| |
| /* Clear memory and bus master */ |
| pci_write_config32(dev, PCI_BASE_ADDRESS_0, 0); |
| reg32 = pci_read_config32(dev, PCI_COMMAND); |
| reg32 &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); |
| pci_write_config32(dev, PCI_COMMAND, reg32); |
| |
| /* Disable device */ |
| switch (dev) { |
| case PCH_EHCI1_DEV: |
| RCBA32_OR(FD, PCH_DISABLE_EHCI1); |
| break; |
| case PCH_EHCI2_DEV: |
| RCBA32_OR(FD, PCH_DISABLE_EHCI2); |
| break; |
| } |
| } |
| |
| /* Handler for EHCI controller on entry to S3/S4/S5 */ |
| void usb_ehci_sleep_prepare(device_t dev, u8 slp_typ) |
| { |
| u32 reg32; |
| u32 bar0_base; |
| u16 pwr_state; |
| u16 pci_cmd; |
| |
| /* Check if the controller is disabled or not present */ |
| bar0_base = pci_read_config32(dev, PCI_BASE_ADDRESS_0); |
| if (bar0_base == 0 || bar0_base == 0xffffffff) |
| return; |
| pci_cmd = pci_read_config32(dev, PCI_COMMAND); |
| |
| switch (slp_typ) { |
| case SLP_TYP_S4: |
| case SLP_TYP_S5: |
| /* Check if controller is in D3 power state */ |
| pwr_state = pci_read_config16(dev, EHCI_PWR_CTL_STS); |
| if ((pwr_state & PWR_CTL_SET_MASK) == PWR_CTL_SET_D3) { |
| /* Put in D0 */ |
| u32 new_state = pwr_state & ~PWR_CTL_SET_MASK; |
| new_state |= PWR_CTL_SET_D0; |
| pci_write_config16(dev, EHCI_PWR_CTL_STS, new_state); |
| |
| /* Make sure memory bar is set */ |
| pci_write_config32(dev, PCI_BASE_ADDRESS_0, bar0_base); |
| |
| /* Make sure memory space is enabled */ |
| pci_write_config16(dev, PCI_COMMAND, pci_cmd | |
| PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); |
| } |
| |
| /* |
| * If Run/Stop (bit0) is clear in USB2.0_CMD: |
| * - Clear Async Schedule Enable (bit5) and |
| * - Clear Periodic Schedule Enable (bit4) and |
| * - Set Run/Stop (bit0) |
| */ |
| reg32 = read32(bar0_base + EHCI_USB_CMD); |
| if (reg32 & EHCI_USB_CMD_RUN) { |
| reg32 &= ~(EHCI_USB_CMD_PSE | EHCI_USB_CMD_ASE); |
| reg32 |= EHCI_USB_CMD_RUN; |
| write32(bar0_base + EHCI_USB_CMD, reg32); |
| } |
| |
| /* Check for Port Enabled in PORTSC(0) (RMH) */ |
| reg32 = read32(bar0_base + EHCI_PORTSC(0)); |
| if (reg32 & EHCI_PORTSC_ENABLED) { |
| /* Set suspend bit in PORTSC if not already set */ |
| if (!(reg32 & EHCI_PORTSC_SUSPEND)) { |
| reg32 |= EHCI_PORTSC_SUSPEND; |
| write32(bar0_base + EHCI_PORTSC(0), reg32); |
| } |
| |
| /* Delay 25ms !! */ |
| udelay(25 * 1000); |
| |
| /* Clear Run/Stop bit */ |
| reg32 = read32(bar0_base + EHCI_USB_CMD); |
| reg32 &= EHCI_USB_CMD_RUN; |
| write32(bar0_base + EHCI_USB_CMD, reg32); |
| } |
| |
| /* Restore state to D3 if that is what it was at the start */ |
| if ((pwr_state & PWR_CTL_SET_MASK) == PWR_CTL_SET_D3) { |
| /* Restore pci command reg */ |
| pci_write_config16(dev, PCI_COMMAND, pci_cmd); |
| |
| /* Enable D3 */ |
| pci_write_config16(dev, EHCI_PWR_CTL_STS, pwr_state); |
| } |
| } |
| } |
| |
| #else /* !__SMM__ */ |
| |
| static void usb_ehci_clock_gating(struct device *dev) |
| { |
| u32 reg32; |
| |
| /* IOBP 0xE5004001[7:6] = 11b */ |
| pch_iobp_update(0xe5004001, ~0, (1 << 7)|(1 << 6)); |
| |
| /* Dx:F0:DCh[5,2,1] = 111b |
| * Dx:F0:DCh[0] = 1b when EHCI controller is disabled */ |
| reg32 = pci_read_config32(dev, 0xdc); |
| reg32 |= (1 << 5) | (1 << 2) | (1 << 1); |
| pci_write_config32(dev, 0xdc, reg32); |
| |
| /* Dx:F0:78h[1:0] = 11b */ |
| reg32 = pci_read_config32(dev, 0x78); |
| reg32 |= (1 << 1) | (1 << 0); |
| pci_write_config32(dev, 0x78, reg32); |
| } |
| |
| static void usb_ehci_init(struct device *dev) |
| { |
| printk(BIOS_DEBUG, "EHCI: Setting up controller.. "); |
| |
| usb_ehci_clock_gating(dev); |
| |
| /* Disable Wake on Disconnect in RMH */ |
| RCBA32_OR(0x35b0, 0x00000022); |
| |
| printk(BIOS_DEBUG, "done.\n"); |
| } |
| |
| static void usb_ehci_set_subsystem(device_t dev, unsigned vendor, unsigned device) |
| { |
| u8 access_cntl; |
| |
| access_cntl = pci_read_config8(dev, 0x80); |
| |
| /* Enable writes to protected registers. */ |
| pci_write_config8(dev, 0x80, access_cntl | 1); |
| |
| if (!vendor || !device) { |
| pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| pci_read_config32(dev, PCI_VENDOR_ID)); |
| } else { |
| pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| ((device & 0xffff) << 16) | (vendor & 0xffff)); |
| } |
| |
| /* Restore protection. */ |
| pci_write_config8(dev, 0x80, access_cntl); |
| } |
| |
| static void usb_ehci_set_resources(struct device *dev) |
| { |
| #if CONFIG_USBDEBUG |
| struct resource *res; |
| u32 base; |
| u32 usb_debug; |
| |
| usb_debug = get_ehci_debug(); |
| set_ehci_debug(0); |
| #endif |
| pci_dev_set_resources(dev); |
| |
| #if CONFIG_USBDEBUG |
| res = find_resource(dev, 0x10); |
| set_ehci_debug(usb_debug); |
| if (!res) return; |
| base = res->base; |
| set_ehci_base(base); |
| report_resource_stored(dev, res, ""); |
| #endif |
| } |
| |
| static struct pci_operations lops_pci = { |
| .set_subsystem = &usb_ehci_set_subsystem, |
| }; |
| |
| static struct device_operations usb_ehci_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = usb_ehci_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = usb_ehci_init, |
| .scan_bus = 0, |
| .ops_pci = &lops_pci, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { 0x9c26, 0x8c26, 0x8c2d, 0 }; |
| |
| static const struct pci_driver pch_usb_ehci __pci_driver = { |
| .ops = &usb_ehci_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |
| |
| #endif /* !__SMM__ */ |