diff options
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/acpi/pch.asl | 5 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/acpi/serialio.asl | 470 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/chip.h | 7 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/pch.h | 31 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/serialio.c | 267 |
6 files changed, 781 insertions, 0 deletions
diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc index 04fa2f83b9..7d1f894385 100644 --- a/src/southbridge/intel/lynxpoint/Makefile.inc +++ b/src/southbridge/intel/lynxpoint/Makefile.inc @@ -32,6 +32,7 @@ ramstage-y += sata.c ramstage-y += usb_ehci.c ramstage-y += me_9.x.c ramstage-y += smbus.c +ramstage-$(CONFIG_INTEL_LYNXPOINT_LP) += serialio.c ramstage-y += rcba.c ramstage-y += me_status.c diff --git a/src/southbridge/intel/lynxpoint/acpi/pch.asl b/src/southbridge/intel/lynxpoint/acpi/pch.asl index ce8f0e0e81..f5cf6aecf2 100644 --- a/src/southbridge/intel/lynxpoint/acpi/pch.asl +++ b/src/southbridge/intel/lynxpoint/acpi/pch.asl @@ -267,6 +267,11 @@ Scope(\) // SMBus 0:1f.3 #include "smbus.asl" +// Serial IO +#if CONFIG_INTEL_LYNXPOINT_LP +#include "serialio.asl" +#endif + Method (_OSC, 4) { /* Check for proper GUID */ diff --git a/src/southbridge/intel/lynxpoint/acpi/serialio.asl b/src/southbridge/intel/lynxpoint/acpi/serialio.asl new file mode 100644 index 0000000000..6ea23c69ea --- /dev/null +++ b/src/southbridge/intel/lynxpoint/acpi/serialio.asl @@ -0,0 +1,470 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 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 + */ + +// Intel LynxPoint Serial IO Devices in ACPI Mode + +// Serial IO Device BAR0 and BAR1 is 4KB +#define SIO_BAR_LEN 0x1000 + +// Serial IO Resource Consumption for BAR1 +Device (SIOR) +{ + Name (_HID, EISAID("PNP0C02")) + Name (_UID, 4) + + Name (RBUF, ResourceTemplate() + { + // Serial IO BAR1 (PCI config space) resources + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D0) // SDMA + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D1) // I2C0 + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D2) // I2C1 + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D3) // SPI0 + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D4) // SPI1 + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D5) // UART0 + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D6) // UART1 + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, B1D7) // SDIO + }) + + // Update BAR1 address and length if set in NVS + Method (_CRS, 0, NotSerialized) + { + // SDMA + If (LNotEqual (\S0B1, Zero)) { + CreateDwordField (^RBUF, ^B1D0._BAS, B0AD) + CreateDwordField (^RBUF, ^B1D0._LEN, B0LN) + Store (\S0B1, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + // I2C0 + If (LNotEqual (\S1B1, Zero)) { + CreateDwordField (^RBUF, ^B1D1._BAS, B1AD) + CreateDwordField (^RBUF, ^B1D1._LEN, B1LN) + Store (\S1B1, B1AD) + Store (SIO_BAR_LEN, B1LN) + } + + // I2C1 + If (LNotEqual (\S2B1, Zero)) { + CreateDwordField (^RBUF, ^B1D2._BAS, B2AD) + CreateDwordField (^RBUF, ^B1D2._LEN, B2LN) + Store (\S2B1, B2AD) + Store (SIO_BAR_LEN, B2LN) + } + + // SPI0 + If (LNotEqual (\S3B1, Zero)) { + CreateDwordField (^RBUF, ^B1D3._BAS, B3AD) + CreateDwordField (^RBUF, ^B1D3._LEN, B3LN) + Store (\S3B1, B3AD) + Store (SIO_BAR_LEN, B3LN) + } + + // SPI1 + If (LNotEqual (\S4B1, Zero)) { + CreateDwordField (^RBUF, ^B1D4._BAS, B4AD) + CreateDwordField (^RBUF, ^B1D4._LEN, B4LN) + Store (\S4B1, B4AD) + Store (SIO_BAR_LEN, B4LN) + } + + // UART0 + If (LNotEqual (\S5B1, Zero)) { + CreateDwordField (^RBUF, ^B1D5._BAS, B5AD) + CreateDwordField (^RBUF, ^B1D5._LEN, B5LN) + Store (\S5B1, B5AD) + Store (SIO_BAR_LEN, B5LN) + } + + // UART1 + If (LNotEqual (\S6B1, Zero)) { + CreateDwordField (^RBUF, ^B1D6._BAS, B6AD) + CreateDwordField (^RBUF, ^B1D6._LEN, B6LN) + Store (\S6B1, B6AD) + Store (SIO_BAR_LEN, B6LN) + } + + // SDIO + If (LNotEqual (\S7B1, Zero)) { + CreateDwordField (^RBUF, ^B1D7._BAS, B7AD) + CreateDwordField (^RBUF, ^B1D7._LEN, B7LN) + Store (\S7B1, B7AD) + Store (SIO_BAR_LEN, B7LN) + } + + Return (RBUF) + } +} + +Device (SDMA) +{ + // Serial IO DMA Controller + Name (_HID, "INTL9C60") + Name (_UID, 1) + Name (_ADR, 0x00150000) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7} + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S0B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S0B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + Return (RBUF) + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S0B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} + +Device (I2C0) +{ + // Serial IO I2C0 Controller + Name (_HID, "INT33C2") + Name (_CID, "INT33C2") + Name (_UID, 1) + Name (_ADR, 0x00150001) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7} + }) + + // DMA channels are only used if Serial IO DMA controller is enabled + Name (DBUF, ResourceTemplate () + { + // TODO: Need to update IASL to support FixedDMA + //FixedDMA (0x18, 4, Width32Bit, DMA1) // Tx + //FixedDMA (0x19, 5, Width32Bit, DMA2) // Rx + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S1B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S1B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + // Check if Serial IO DMA Controller is enabled + If (LNotEqual (\_SB.PCI0.SDMA._STA, Zero)) { + Return (ConcatenateResTemplate (RBUF, DBUF)) + } Else { + Return (RBUF) + } + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S1B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} + +Device (I2C1) +{ + // Serial IO I2C1 Controller + Name (_HID, "INT33C3") + Name (_CID, "INT33C3") + Name (_UID, 1) + Name (_ADR, 0x00150002) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7} + }) + + // DMA channels are only used if Serial IO DMA controller is enabled + Name (DBUF, ResourceTemplate () + { + // TODO: Need to update IASL to support FixedDMA + //FixedDMA (0x1A, 6, Width32Bit, DMA1) // Tx + //FixedDMA (0x1B, 7, Width32Bit, DMA2) // Rx + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S2B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S2B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + // Check if Serial IO DMA Controller is enabled + If (LNotEqual (\_SB.PCI0.SDMA._STA, Zero)) { + Return (ConcatenateResTemplate (RBUF, DBUF)) + } Else { + Return (RBUF) + } + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S2B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} + +Device (SPI0) +{ + // Serial IO SPI0 Controller + Name (_HID, "INT33C0") + Name (_CID, "INT33C0") + Name (_UID, 1) + Name (_ADR, 0x00150003) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7} + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S3B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S3B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + Return (RBUF) + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S3B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} + +Device (SPI1) +{ + // Serial IO SPI1 Controller + Name (_HID, "INT33C1") + Name (_CID, "INT33C1") + Name (_UID, 1) + Name (_ADR, 0x00150004) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {7} + }) + + // DMA channels are only used if Serial IO DMA controller is enabled + Name (DBUF, ResourceTemplate () + { + // TODO: Need to update IASL to support FixedDMA + //FixedDMA (0x10, 0, Width32Bit, DMA1) // Tx + //FixedDMA (0x11, 1, Width32Bit, DMA2) // Rx + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S4B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S4B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + // Check if Serial IO DMA Controller is enabled + If (LNotEqual (\_SB.PCI0.SDMA._STA, Zero)) { + Return (ConcatenateResTemplate (RBUF, DBUF)) + } Else { + Return (RBUF) + } + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S4B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} + +Device (UAR0) +{ + // Serial IO UART0 Controller + Name (_HID, "INT33C4") + Name (_CID, "INT33C4") + Name (_UID, 1) + Name (_ADR, 0x00150005) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {13} + }) + + // DMA channels are only used if Serial IO DMA controller is enabled + Name (DBUF, ResourceTemplate () + { + // TODO: Need to update IASL to support FixedDMA + //FixedDMA (0x16, 2, Width32Bit, DMA1) // Tx + //FixedDMA (0x17, 3, Width32Bit, DMA2) // Rx + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S5B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S5B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + // Check if Serial IO DMA Controller is enabled + If (LNotEqual (\_SB.PCI0.SDMA._STA, Zero)) { + Return (ConcatenateResTemplate (RBUF, DBUF)) + } Else { + Return (RBUF) + } + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S5B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} + +Device (UAR1) +{ + // Serial IO UART1 Controller + Name (_HID, "INT33C5") + Name (_CID, "INT33C5") + Name (_UID, 1) + Name (_ADR, 0x00150006) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {13} + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S6B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S6B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + Return (RBUF) + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S6B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} + +Device (SDIO) +{ + // Serial IO SDIO Controller + Name (_HID, "INT33C6") + Name (_CID, "PNP0D40") + Name (_UID, 1) + Name (_ADR, 0x00170000) + + // BAR0 is assigned during PCI enumeration and saved into NVS + Name (RBUF, ResourceTemplate () + { + Memory32Fixed (ReadWrite, 0x00000000, 0x00000000, BAR0) + Interrupt (ResourceConsumer, Level, ActiveLow, Shared, , , ) {5} + }) + + Method (_CRS, 0, NotSerialized) + { + // Update BAR0 address and length if set in NVS + If (LNotEqual (\S7B0, Zero)) { + CreateDwordField (^RBUF, ^BAR0._BAS, B0AD) + CreateDwordField (^RBUF, ^BAR0._LEN, B0LN) + Store (\S7B0, B0AD) + Store (SIO_BAR_LEN, B0LN) + } + + Return (RBUF) + } + + Method (_STA, 0, NotSerialized) + { + If (LEqual (\S7B0, 0)) { + Return (0x0) + } Else { + Return (0xF) + } + } +} diff --git a/src/southbridge/intel/lynxpoint/chip.h b/src/southbridge/intel/lynxpoint/chip.h index 95bd087bdb..70f3e63a63 100644 --- a/src/southbridge/intel/lynxpoint/chip.h +++ b/src/southbridge/intel/lynxpoint/chip.h @@ -85,6 +85,13 @@ struct southbridge_intel_lynxpoint_config { /* Enable linear PCIe Root Port function numbers starting at zero */ uint8_t pcie_port_coalesce; + + /* Serial IO configuration */ + /* Put devices into ACPI mode instead of a PCI device */ + uint8_t sio_acpi_mode; + /* I2C voltage select: 0=3.3V 1=1.8V */ + uint8_t sio_i2c0_voltage; + uint8_t sio_i2c1_voltage; }; extern struct chip_operations southbridge_intel_lynxpoint_ops; diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h index 659ddb65b3..7246739bb5 100644 --- a/src/southbridge/intel/lynxpoint/pch.h +++ b/src/southbridge/intel/lynxpoint/pch.h @@ -345,11 +345,13 @@ unsigned get_gpios(const int *gpio_num_array); #define SIO_IOBP_PORTCTRL6 0xcb000260 /* SPI1 D21:F4 */ #define SIO_IOBP_PORTCTRL7 0xcb000268 /* UART0 D21:F5 */ #define SIO_IOBP_PORTCTRL8 0xcb000270 /* UART1 D21:F6 */ +#define SIO_IOBP_PORTCTRLX(x) (0xcb000240 + ((x) * 8)) /* PORTCTRL 2-8 have the same layout */ #define SIO_IOBP_PORTCTRL_ACPI_IRQ_EN (1 << 21) #define SIO_IOBP_PORTCTRL_PCI_CONF_DIS (1 << 20) #define SIO_IOBP_PORTCTRL_SNOOP_SELECT(x) (((x) & 3) << 18) #define SIO_IOBP_PORTCTRL_INT_PIN(x) (((x) & 0xf) << 2) +#define SIO_IOBP_PORTCTRL_PM_CAP_PRSNT (1 << 1) #define SIO_IOBP_FUNCDIS0 0xce00aa07 /* DMA D21:F0 */ #define SIO_IOBP_FUNCDIS1 0xce00aa47 /* I2C0 D21:F1 */ #define SIO_IOBP_FUNCDIS2 0xce00aa87 /* I2C1 D21:F2 */ @@ -360,6 +362,34 @@ unsigned get_gpios(const int *gpio_num_array); #define SIO_IOBP_FUNCDIS7 0xce00ae07 /* SDIO D23:F0 */ #define SIO_IOBP_FUNCDIS_DIS (1 << 8) +/* Serial IO Devices */ +#define SIO_ID_SDMA 0 /* D21:F0 */ +#define SIO_ID_I2C0 1 /* D21:F1 */ +#define SIO_ID_I2C1 2 /* D21:F2 */ +#define SIO_ID_SPI0 3 /* D21:F3 */ +#define SIO_ID_SPI1 4 /* D21:F4 */ +#define SIO_ID_UART0 5 /* D21:F5 */ +#define SIO_ID_UART1 6 /* D21:F6 */ +#define SIO_ID_SDIO 7 /* D23:F0 */ + +#define SIO_REG_PPR_RST 0x804 +#define SIO_REG_PPR_RST_ASSERT 0x3 +#define SIO_REG_PPR_GEN 0x808 +#define SIO_REG_PPR_GEN_LTR_MODE_MASK (1 << 2) +#define SIO_REG_PPR_GEN_VOLTAGE_MASK (1 << 3) +#define SIO_REG_PPR_GEN_VOLTAGE(x) ((x & 1) << 3) +#define SIO_REG_AUTO_LTR 0x814 + +#define SIO_REG_SDIO_PPR_GEN 0x1008 +#define SIO_REG_SDIO_PPR_SW_LTR 0x1010 +#define SIO_REG_SDIO_PPR_CMD12 0x3c +#define SIO_REG_SDIO_PPR_CMD12_B30 (1 << 30) + +#define SIO_PIN_INTA 1 /* IRQ5 in ACPI mode */ +#define SIO_PIN_INTB 2 /* IRQ6 in ACPI mode */ +#define SIO_PIN_INTC 3 /* IRQ7 in ACPI mode */ +#define SIO_PIN_INTD 4 /* IRQ13 in ACPI mode */ + /* PCI Configuration Space (D31:F3): SMBus */ #define PCH_SMBUS_DEV PCI_DEV(0, 0x1f, 3) #define SMB_BASE 0x20 @@ -538,6 +568,7 @@ unsigned get_gpios(const int *gpio_num_array); #define D20IR 0x3160 /* 16bit */ #define D21IR 0x3164 /* 16bit */ #define D19IR 0x3168 /* 16bit */ +#define ACPIIRQEN 0x31e0 /* 32bit */ #define OIC 0x31fe /* 16bit */ #define SOFT_RESET_CTRL 0x38f4 #define SOFT_RESET_DATA 0x38f8 diff --git a/src/southbridge/intel/lynxpoint/serialio.c b/src/southbridge/intel/lynxpoint/serialio.c new file mode 100644 index 0000000000..11d6a36b44 --- /dev/null +++ b/src/southbridge/intel/lynxpoint/serialio.c @@ -0,0 +1,267 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 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 <arch/io.h> +#include <cbmem.h> +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pciexp.h> +#include <device/pci_ids.h> +#include <stdlib.h> +#include "pch.h" +#include "nvs.h" + +/* Put Serial IO D21:F0-F6 device into desired mode. */ +static void serialio_d21_mode(int sio_index, int int_pin, int acpi_mode) +{ + u32 portctrl = SIO_IOBP_PORTCTRL_PM_CAP_PRSNT; + + /* Snoop select 1. */ + portctrl |= SIO_IOBP_PORTCTRL_SNOOP_SELECT(1); + + /* Set interrupt pin. */ + portctrl |= SIO_IOBP_PORTCTRL_INT_PIN(int_pin); + + if (acpi_mode) { + /* Enable ACPI interrupt mode. */ + portctrl |= SIO_IOBP_PORTCTRL_ACPI_IRQ_EN; + + /* Disable PCI config space. */ + portctrl |= SIO_IOBP_PORTCTRL_PCI_CONF_DIS; + } + + pch_iobp_update(SIO_IOBP_PORTCTRLX(sio_index), 0, portctrl); +} + +/* Put Serial IO D23:F0 device into desired mode. */ +static void serialio_d23_mode(int acpi_mode) +{ + u32 portctrl = 0; + + /* Snoop select 1. */ + pch_iobp_update(SIO_IOBP_PORTCTRL1, 0, + SIO_IOBP_PORTCTRL1_SNOOP_SELECT(1)); + + if (acpi_mode) { + /* Enable ACPI interrupt mode. */ + portctrl |= SIO_IOBP_PORTCTRL0_ACPI_IRQ_EN; + + /* Disable PCI config space. */ + portctrl |= SIO_IOBP_PORTCTRL0_PCI_CONF_DIS; + } + + pch_iobp_update(SIO_IOBP_PORTCTRL0, 0, portctrl); +} + +/* Enable LTR Auto Mode for D21:F1-F6. */ +static void serialio_d21_ltr(struct resource *bar0) +{ + u32 reg; + + /* 1. Program BAR0 + 808h[2] = 0b */ + reg = read32(bar0->base + SIO_REG_PPR_GEN); + reg &= ~SIO_REG_PPR_GEN_LTR_MODE_MASK; + write32(bar0->base + SIO_REG_PPR_GEN, reg); + + /* 2. Program BAR0 + 804h[1:0] = 00b */ + reg = read32(bar0->base + SIO_REG_PPR_RST); + reg &= ~SIO_REG_PPR_RST_ASSERT; + write32(bar0->base + SIO_REG_PPR_RST, reg); + + /* 3. Program BAR0 + 804h[1:0] = 11b */ + reg = read32(bar0->base + SIO_REG_PPR_RST); + reg |= SIO_REG_PPR_RST_ASSERT; + write32(bar0->base + SIO_REG_PPR_RST, reg); + + /* 4. Program BAR0 + 814h[31:0] = 00000000h */ + write32(bar0->base + SIO_REG_AUTO_LTR, 0); +} + +/* Enable LTR Auto Mode for D23:F0. */ +static void serialio_d23_ltr(struct resource *bar0) +{ + u32 reg; + + /* Program BAR0 + 1008h[2] = 1b */ + reg = read32(bar0->base + SIO_REG_SDIO_PPR_GEN); + reg |= SIO_REG_PPR_GEN_LTR_MODE_MASK; + write32(bar0->base + SIO_REG_SDIO_PPR_GEN, reg); + + /* Program BAR0 + 1010h = 0x00000000 */ + write32(bar0->base + SIO_REG_SDIO_PPR_SW_LTR, 0); + + /* Program BAR0 + 3Ch[30] = 1b */ + reg = read32(bar0->base + SIO_REG_SDIO_PPR_CMD12); + reg |= SIO_REG_SDIO_PPR_CMD12_B30; + write32(bar0->base + SIO_REG_SDIO_PPR_CMD12, reg); +} + +/* Select I2C voltage of 1.8V or 3.3V. */ +static void serialio_i2c_voltage_sel(struct resource *bar0, u8 voltage) +{ + u32 reg32 = read32(bar0->base + SIO_REG_PPR_GEN); + reg32 &= ~SIO_REG_PPR_GEN_VOLTAGE_MASK; + reg32 |= SIO_REG_PPR_GEN_VOLTAGE(voltage); + write32(bar0->base + SIO_REG_PPR_GEN, reg32); +} + +/* Init sequence to be run once, done as part of D21:F0 (SDMA) init. */ +static void serialio_init_once(int acpi_mode) +{ + if (acpi_mode) { + /* Enable ACPI IRQ for IRQ13, IRQ7, IRQ6, IRQ5 in RCBA. */ + RCBA32_OR(ACPIIRQEN, (1 << 13)|(1 << 7)|(1 << 6)|(1 << 5)); + } + + /* Program IOBP CB000154h[12,9:8,4:0] = 1001100011111b. */ + pch_iobp_update(SIO_IOBP_GPIODF, ~0x0000131f, 0x0000131f); + + /* Program IOBP CB000180h[5:0] = 111111b (undefined register) */ + pch_iobp_update(0xcb000180, ~0x0000003f, 0x0000003f); +} + +static void serialio_init(struct device *dev) +{ + struct southbridge_intel_lynxpoint_config *config = dev->chip_info; + struct resource *bar0, *bar1; + int sio_index = -1; + + printk(BIOS_DEBUG, "Initializing Serial IO device\n"); + + /* Find BAR0 and BAR1 */ + bar0 = find_resource(dev, PCI_BASE_ADDRESS_0); + if (!bar0) + return; + bar1 = find_resource(dev, PCI_BASE_ADDRESS_1); + if (!bar1) + return; + + switch (dev->path.pci.devfn) { + case PCI_DEVFN(21, 0): /* SDMA */ + sio_index = SIO_ID_SDMA; + serialio_init_once(config->sio_acpi_mode); + serialio_d21_mode(sio_index, SIO_PIN_INTB, + config->sio_acpi_mode); + break; + case PCI_DEVFN(21, 1): /* I2C0 */ + sio_index = SIO_ID_I2C0; + serialio_d21_ltr(bar0); + serialio_i2c_voltage_sel(bar0, config->sio_i2c0_voltage); + serialio_d21_mode(sio_index, SIO_PIN_INTC, + config->sio_acpi_mode); + break; + case PCI_DEVFN(21, 2): /* I2C1 */ + sio_index = SIO_ID_I2C1; + serialio_d21_ltr(bar0); + serialio_i2c_voltage_sel(bar0, config->sio_i2c1_voltage); + serialio_d21_mode(sio_index, SIO_PIN_INTC, + config->sio_acpi_mode); + break; + case PCI_DEVFN(21, 3): /* SPI0 */ + sio_index = SIO_ID_SPI0; + serialio_d21_ltr(bar0); + serialio_d21_mode(sio_index, SIO_PIN_INTC, + config->sio_acpi_mode); + break; + case PCI_DEVFN(21, 4): /* SPI1 */ + sio_index = SIO_ID_SPI1; + serialio_d21_ltr(bar0); + serialio_d21_mode(sio_index, SIO_PIN_INTC, + config->sio_acpi_mode); + break; + case PCI_DEVFN(21, 5): /* UART0 */ + sio_index = SIO_ID_UART0; + serialio_d21_ltr(bar0); + serialio_d21_mode(sio_index, SIO_PIN_INTD, + config->sio_acpi_mode); + break; + case PCI_DEVFN(21, 6): /* UART1 */ + sio_index = SIO_ID_UART1; + serialio_d21_ltr(bar0); + serialio_d21_mode(sio_index, SIO_PIN_INTD, + config->sio_acpi_mode); + break; + case PCI_DEVFN(23, 0): /* SDIO */ + sio_index = SIO_ID_SDIO; + serialio_d23_ltr(bar0); + serialio_d23_mode(config->sio_acpi_mode); + break; + default: + return; + } + + if (config->sio_acpi_mode) { + global_nvs_t *gnvs; + + /* Find ACPI NVS to update BARs */ + gnvs = (global_nvs_t *)cbmem_find(CBMEM_ID_ACPI_GNVS); + if (!gnvs) { + printk(BIOS_ERR, "Unable to locate Global NVS\n"); + return; + } + + /* Save BAR0 and BAR1 to ACPI NVS */ + gnvs->s0b[sio_index] = (u32)bar0->base; + gnvs->s1b[sio_index] = (u32)bar1->base; + } +} + +static void serialio_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 pci_ops = { + .set_subsystem = serialio_set_subsystem, +}; + +static struct device_operations device_ops = { + .read_resources = pci_bus_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_bus_enable_resources, + .init = serialio_init, + .ops_pci = &pci_ops, +}; + +static const unsigned short pci_device_ids[] = { + 0x9c60, /* 0:15.0 - SDMA */ + 0x9c61, /* 0:15.1 - I2C0 */ + 0x9c62, /* 0:15.2 - I2C1 */ + 0x9c65, /* 0:15.3 - SPI0 */ + 0x9c66, /* 0:15.4 - SPI1 */ + 0x9c63, /* 0:15.5 - UART0 */ + 0x9c64, /* 0:15.6 - UART1 */ + 0x9c35, /* 0:17.0 - SDIO */ + 0 +}; + +static const struct pci_driver pch_pcie __pci_driver = { + .ops = &device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = pci_device_ids, +}; |