diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/pch.h | 7 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/smihandler.c | 98 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/usb_ehci.c | 31 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/usb_xhci.c | 175 |
5 files changed, 303 insertions, 9 deletions
diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc index 370e017fd5..4d96edfd5f 100644 --- a/src/southbridge/intel/lynxpoint/Makefile.inc +++ b/src/southbridge/intel/lynxpoint/Makefile.inc @@ -30,6 +30,7 @@ ramstage-y += pci.c ramstage-y += pcie.c ramstage-y += sata.c ramstage-y += usb_ehci.c +ramstage-y += usb_xhci.c ramstage-y += me_9.x.c ramstage-y += smbus.c ramstage-$(CONFIG_INTEL_LYNXPOINT_LP) += serialio.c diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h index b01fdc04cb..6ee81d1f4b 100644 --- a/src/southbridge/intel/lynxpoint/pch.h +++ b/src/southbridge/intel/lynxpoint/pch.h @@ -224,6 +224,7 @@ void set_gpio(int gpio_num, int value); #define PCH_EHCI1_DEV PCI_DEV(0, 0x1d, 0) #define PCH_EHCI2_DEV PCI_DEV(0, 0x1a, 0) +#define PCH_XHCI_DEV PCI_DEV(0, 0x14, 0) #define PCH_ME_DEV PCI_DEV(0, 0x16, 0) #define PCH_PCIE_DEV_SLOT 28 @@ -335,6 +336,12 @@ void set_gpio(int gpio_num, int value); #define SATA_IOBP_SP0G3IR 0xea000151 #define SATA_IOBP_SP1G3IR 0xea000051 +/* USB Registers */ +#define EHCI_PWR_CNTL_STS 0x54 +#define EHCI_PWR_STS_MASK 0x3 +#define EHCI_PWR_STS_SET_D0 0x0 +#define EHCI_PWR_STS_SET_D3 0x3 + /* Serial IO IOBP Registers */ #define SIO_IOBP_PORTCTRL0 0xcb000000 /* SDIO D23:F0 */ #define SIO_IOBP_PORTCTRL0_ACPI_IRQ_EN (1 << 5) diff --git a/src/southbridge/intel/lynxpoint/smihandler.c b/src/southbridge/intel/lynxpoint/smihandler.c index 203a1bbfb5..add53ed5a9 100644 --- a/src/southbridge/intel/lynxpoint/smihandler.c +++ b/src/southbridge/intel/lynxpoint/smihandler.c @@ -20,6 +20,7 @@ * MA 02110-1301 USA */ +#include <delay.h> #include <types.h> #include <arch/hlt.h> #include <arch/io.h> @@ -105,6 +106,98 @@ static void busmaster_disable_on_bus(int bus) } } +/* Handler for EHCI controller on entry to S3/S4/S5 */ +static void 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_CNTL_STS); + if ((pwr_state & EHCI_PWR_STS_MASK) == EHCI_PWR_STS_SET_D3) { + /* Put in D0 */ + pwr_state &= ~EHCI_PWR_STS_MASK; + pwr_state |= EHCI_PWR_STS_SET_D0; + pci_write_config16(dev, EHCI_PWR_CNTL_STS, pwr_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 + 0x20); + if (reg32 & (1 << 0)) { + reg32 &= ~((1 << 5) | (1 << 4)); + reg32 |= (1 << 0); + write32(bar0_base + 0x20, reg32); + } + + /* Check for Port Enabled in PORTSC */ + reg32 = read32(bar0_base + 0x64); + if (reg32 & (1 << 2)) { + /* Set suspend bit in PORTSC if not already set */ + if (!(reg32 & (1 << 7))) { + reg32 |= (1 << 7); + write32(bar0_base + 0x64, reg32); + } + + /* Delay 25ms !! */ + udelay(25 * 1000); + + /* Clear Run/Stop bit */ + reg32 = read32(bar0_base + 0x20); + reg32 &= (1 << 0); + write32(bar0_base + 0x20, reg32); + } + + pwr_state = pci_read_config16(dev, EHCI_PWR_CNTL_STS); + if ((pwr_state & EHCI_PWR_STS_MASK) == EHCI_PWR_STS_SET_D3) { + /* Restore pci command reg */ + pci_write_config16(dev, PCI_COMMAND, pci_cmd); + + /* Enable D3 */ + pwr_state |= EHCI_PWR_STS_SET_D3; + pci_write_config16(dev, EHCI_PWR_CNTL_STS, pwr_state); + } + } +} + +/* Handler for XHCI controller on entry to S3/S4/S5 */ +static void xhci_sleep_prepare(device_t dev, u8 slp_typ) +{ + u16 reg16; + + switch (slp_typ) { + case SLP_TYP_S3: + case SLP_TYP_S4: + case SLP_TYP_S5: + /* Set D3Hot state and PME enable bit */ + reg16 = pci_read_config16(dev, 0x74); + reg16 |= (1 << 8) | (1 << 1) | (1 << 0); + pci_write_config16(dev, 0x74, reg16); + } +} + static void southbridge_smi_sleep(void) { u8 reg8; @@ -132,6 +225,11 @@ static void southbridge_smi_sleep(void) /* Do any mainboard sleep handling */ mainboard_smi_sleep(slp_typ-2); + /* USB sleep preparations */ + ehci_sleep_prepare(PCH_EHCI1_DEV, slp_typ); + ehci_sleep_prepare(PCH_EHCI2_DEV, slp_typ); + xhci_sleep_prepare(PCH_XHCI_DEV, slp_typ); + #if CONFIG_ELOG_GSMI /* Log S3, S4, and S5 entry */ if (slp_typ >= 5) diff --git a/src/southbridge/intel/lynxpoint/usb_ehci.c b/src/southbridge/intel/lynxpoint/usb_ehci.c index fd7c659edd..f06151b138 100644 --- a/src/southbridge/intel/lynxpoint/usb_ehci.c +++ b/src/southbridge/intel/lynxpoint/usb_ehci.c @@ -26,20 +26,33 @@ #include <usbdebug.h> #include <arch/io.h> -static void usb_ehci_init(struct device *dev) +static void usb_ehci_clock_gating(struct device *dev) { u32 reg32; - /* Disable Wake on Disconnect in RMH */ - reg32 = RCBA32(0x35b0); - reg32 |= 0x22; - RCBA32(0x35b0) = 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.. "); - reg32 = pci_read_config32(dev, PCI_COMMAND); - reg32 |= PCI_COMMAND_MASTER; - //reg32 |= PCI_COMMAND_SERR; - pci_write_config32(dev, PCI_COMMAND, reg32); + + usb_ehci_clock_gating(dev); + + /* Disable Wake on Disconnect in RMH */ + RCBA32_OR(0x35b0, 0x00000022); printk(BIOS_DEBUG, "done.\n"); } diff --git a/src/southbridge/intel/lynxpoint/usb_xhci.c b/src/southbridge/intel/lynxpoint/usb_xhci.c new file mode 100644 index 0000000000..33f33f4d70 --- /dev/null +++ b/src/southbridge/intel/lynxpoint/usb_xhci.c @@ -0,0 +1,175 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * 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 <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <arch/io.h> +#include "pch.h" + +static void usb_xhci_clock_gating(device_t dev) +{ + u32 reg32; + + /* IOBP 0xE5004001[7:6] = 11b */ + pch_iobp_update(0xe5004001, ~0, (1 << 7)|(1 << 6)); + + reg32 = pci_read_config32(dev, 0x40); + reg32 &= ~(1 << 23); /* unsupported request */ + + if (pch_is_lp()) { + /* D20:F0:40h[18,17,8] = 111b */ + reg32 |= (1 << 18) | (1 << 17) | (1 << 8); + /* D20:F0:40h[21,20,19] = 110b to enable XHCI Idle L1 */ + reg32 &= ~(1 << 19); + reg32 |= (1 << 21) | (1 << 20); + } else { + /* D20:F0:40h[21,20,18,17,8] = 11111b */ + reg32 |= (1 << 21)|(1 << 20)|(1 << 18)|(1 << 17)|(1 << 8); + } + + /* Avoid writing upper byte as it is write-once */ + pci_write_config16(dev, 0x40, (u16)(reg32 & 0xffff)); + pci_write_config8(dev, 0x40 + 2, (u8)((reg32 >> 16) & 0xff)); + + /* D20:F0:44h[9,7,3] = 111b */ + reg32 = pci_read_config32(dev, 0x44); + reg32 |= (1 << 9) | (1 << 7) | (1 << 3); + pci_write_config32(dev, 0x44, reg32); + + reg32 = pci_read_config32(dev, 0xa0); + if (pch_is_lp()) { + /* D20:F0:A0h[18] = 1 */ + reg32 |= (1 << 18); + } else { + /* D20:F0:A0h[6] = 1 */ + reg32 |= (1 << 6); + } + pci_write_config32(dev, 0xa0, reg32); + + /* D20:F0:A4h[13] = 0 */ + reg32 = pci_read_config32(dev, 0xa4); + reg32 &= ~(1 << 13); + pci_write_config32(dev, 0xa4, reg32); +} + +static void usb_xhci_init(device_t dev) +{ + struct resource *bar0 = find_resource(dev, PCI_BASE_ADDRESS_0); + u32 reg32; + + if (!bar0 || bar0->base == 0 || bar0->base == 0xffffffff) + return; + + /* Enable clock gating first */ + usb_xhci_clock_gating(dev); + + /* D20:F0:74h[1:0] = 11b (set D3Hot state) */ + reg32 = pci_read_config16(dev, 0x74); + reg32 |= (1 << 1) | (1 << 0); + pci_write_config16(dev, 0x74, reg32); + + reg32 = read32(bar0->base + 0x8144); + if (pch_is_lp()) { + /* XHCIBAR + 8144h[8,7,6] = 111b */ + reg32 |= (1 << 8) | (1 << 7) | (1 << 6); + } else { + /* XHCIBAR + 8144h[8,7,6] = 100b */ + reg32 &= ~((1 << 7) | (1 << 6)); + reg32 |= (1 << 8); + } + write32(bar0->base + 0x8144, reg32); + + if (pch_is_lp()) { + /* XHCIBAR + 816Ch[19:0] = 000f0038h */ + reg32 = read32(bar0->base + 0x816c); + reg32 &= ~0x000fffff; + reg32 |= 0x000f0038; + write32(bar0->base + 0x816c, reg32); + + /* D20:F0:B0h[17,14,13] = 100b */ + reg32 = pci_read_config32(dev, 0xb0); + reg32 &= ~((1 << 14) | (1 << 13)); + reg32 |= (1 << 17); + pci_write_config32(dev, 0xb0, reg32); + + /* XHCIBAR + 818Ch[7:0] = FFh */ + reg32 = read32(bar0->base + 0x818c); + reg32 |= 0xff; + write32(bar0->base + 0x818c, reg32); + } + + reg32 = pci_read_config32(dev, 0x50); + if (pch_is_lp()) { + /* D20:F0:50h[28:0] = 0FCE2E5Fh */ + reg32 &= ~0x1fffffff; + reg32 |= 0x0fce2e5f; + } else { + /* D20:F0:50h[26:0] = 07886E9Fh */ + reg32 &= ~0x07ffffff; + reg32 |= 0x07886e9f; + } + pci_write_config32(dev, 0x50, reg32); + + /* D20:F0:44h[31] = 1 (Access Control Bit) */ + reg32 = pci_read_config32(dev, 0x40); + reg32 |= (1 << 31); + pci_write_config32(dev, 0x40, reg32); + + /* D20:F0:40h[31,23] = 10b (OC Configuration Done) */ + reg32 = pci_read_config32(dev, 0x40); + reg32 &= ~(1 << 23); /* unsupported request */ + reg32 |= (1 << 31); + pci_write_config32(dev, 0x40, reg32); +} + +static void usb_xhci_set_subsystem(device_t dev, unsigned vendor, + unsigned device) +{ + 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)); + } +} + +static struct pci_operations lops_pci = { + .set_subsystem = &usb_xhci_set_subsystem, +}; + +static struct device_operations usb_xhci_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = usb_xhci_init, + .ops_pci = &lops_pci, +}; + +static const unsigned short pci_device_ids[] = { 0x8c31, /* LynxPoint-H */ + 0x9c31, /* LynxPoint-LP */ + 0 }; + +static const struct pci_driver pch_usb_xhci __pci_driver = { + .ops = &usb_xhci_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = pci_device_ids, +}; |