| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <option.h> |
| #include <pc80/isa-dma.h> |
| #include <pc80/i8259.h> |
| #include <arch/io.h> |
| #include <arch/ioapic.h> |
| #include <acpi/acpi.h> |
| #include <cpu/x86/smm.h> |
| #include <string.h> |
| #include "chip.h" |
| #include "iobp.h" |
| #include "pch.h" |
| #include <acpi/acpigen.h> |
| #include <southbridge/intel/common/acpi_pirq_gen.h> |
| #include <southbridge/intel/common/rtc.h> |
| #include <southbridge/intel/common/spi.h> |
| |
| #define NMI_OFF 0 |
| |
| typedef struct southbridge_intel_lynxpoint_config config_t; |
| |
| /** |
| * Set miscellanous static southbridge features. |
| * |
| * @param dev PCI device with I/O APIC control registers |
| */ |
| static void pch_enable_ioapic(struct device *dev) |
| { |
| u32 reg32; |
| |
| /* Assign unique bus/dev/fn for I/O APIC */ |
| pci_write_config16(dev, LPC_IBDF, |
| PCH_IOAPIC_PCI_BUS << 8 | PCH_IOAPIC_PCI_SLOT << 3); |
| |
| set_ioapic_id(VIO_APIC_VADDR, 0x02); |
| |
| /* affirm full set of redirection table entries ("write once") */ |
| reg32 = io_apic_read(VIO_APIC_VADDR, 0x01); |
| if (pch_is_lp()) { |
| /* PCH-LP has 39 redirection entries */ |
| reg32 &= ~0x00ff0000; |
| reg32 |= 0x00270000; |
| } |
| io_apic_write(VIO_APIC_VADDR, 0x01, reg32); |
| |
| /* |
| * Select Boot Configuration register (0x03) and |
| * use Processor System Bus (0x01) to deliver interrupts. |
| */ |
| io_apic_write(VIO_APIC_VADDR, 0x03, 0x01); |
| } |
| |
| static void pch_enable_serial_irqs(struct device *dev) |
| { |
| /* Set packet length and toggle silent mode bit for one frame. */ |
| pci_write_config8(dev, SERIRQ_CNTL, |
| (1 << 7) | (1 << 6) | ((21 - 17) << 2) | (0 << 0)); |
| #if !CONFIG(SERIRQ_CONTINUOUS_MODE) |
| pci_write_config8(dev, SERIRQ_CNTL, |
| (1 << 7) | (0 << 6) | ((21 - 17) << 2) | (0 << 0)); |
| #endif |
| } |
| |
| static void enable_hpet(struct device *const dev) |
| { |
| u32 reg32; |
| size_t i; |
| |
| /* Assign unique bus/dev/fn for each HPET */ |
| for (i = 0; i < 8; ++i) |
| pci_write_config16(dev, LPC_HnBDF(i), |
| PCH_HPET_PCI_BUS << 8 | PCH_HPET_PCI_SLOT << 3 | i); |
| |
| /* Move HPET to default address 0xfed00000 and enable it */ |
| reg32 = RCBA32(HPTC); |
| reg32 |= (1 << 7); // HPET Address Enable |
| reg32 &= ~(3 << 0); |
| RCBA32(HPTC) = reg32; |
| /* Read it back to stick. It's affected by posted write syndrome. */ |
| RCBA32(HPTC); |
| } |
| |
| /* PIRQ[n]_ROUT[3:0] - PIRQ Routing Control |
| * 0x00 - 0000 = Reserved |
| * 0x01 - 0001 = Reserved |
| * 0x02 - 0010 = Reserved |
| * 0x03 - 0011 = IRQ3 |
| * 0x04 - 0100 = IRQ4 |
| * 0x05 - 0101 = IRQ5 |
| * 0x06 - 0110 = IRQ6 |
| * 0x07 - 0111 = IRQ7 |
| * 0x08 - 1000 = Reserved |
| * 0x09 - 1001 = IRQ9 |
| * 0x0A - 1010 = IRQ10 |
| * 0x0B - 1011 = IRQ11 |
| * 0x0C - 1100 = IRQ12 |
| * 0x0D - 1101 = Reserved |
| * 0x0E - 1110 = IRQ14 |
| * 0x0F - 1111 = IRQ15 |
| * PIRQ[n]_ROUT[7] - PIRQ Routing Control |
| * 0x80 - The PIRQ is not routed. |
| */ |
| |
| static void pch_pirq_init(struct device *dev) |
| { |
| struct device *irq_dev; |
| |
| const uint8_t pirq = 0x80; |
| |
| pci_write_config8(dev, PIRQA_ROUT, pirq); |
| pci_write_config8(dev, PIRQB_ROUT, pirq); |
| pci_write_config8(dev, PIRQC_ROUT, pirq); |
| pci_write_config8(dev, PIRQD_ROUT, pirq); |
| |
| pci_write_config8(dev, PIRQE_ROUT, pirq); |
| pci_write_config8(dev, PIRQF_ROUT, pirq); |
| pci_write_config8(dev, PIRQG_ROUT, pirq); |
| pci_write_config8(dev, PIRQH_ROUT, pirq); |
| |
| /* Eric Biederman once said we should let the OS do this. |
| * I am not so sure anymore he was right. |
| */ |
| |
| for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { |
| u8 int_pin = 0, int_line = 0; |
| |
| if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI) |
| continue; |
| |
| int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); |
| |
| switch (int_pin) { |
| case 1: /* INTA# */ |
| case 2: /* INTB# */ |
| case 3: /* INTC# */ |
| case 4: /* INTD# */ |
| int_line = pirq; |
| break; |
| } |
| |
| if (!int_line) |
| continue; |
| |
| pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line); |
| } |
| } |
| |
| static void pch_gpi_routing(struct device *dev, config_t *config) |
| { |
| u32 reg32 = 0; |
| |
| /* An array would be much nicer here, or some |
| * other method of doing this. |
| */ |
| reg32 |= (config->gpi0_routing & 0x03) << 0; |
| reg32 |= (config->gpi1_routing & 0x03) << 2; |
| reg32 |= (config->gpi2_routing & 0x03) << 4; |
| reg32 |= (config->gpi3_routing & 0x03) << 6; |
| reg32 |= (config->gpi4_routing & 0x03) << 8; |
| reg32 |= (config->gpi5_routing & 0x03) << 10; |
| reg32 |= (config->gpi6_routing & 0x03) << 12; |
| reg32 |= (config->gpi7_routing & 0x03) << 14; |
| reg32 |= (config->gpi8_routing & 0x03) << 16; |
| reg32 |= (config->gpi9_routing & 0x03) << 18; |
| reg32 |= (config->gpi10_routing & 0x03) << 20; |
| reg32 |= (config->gpi11_routing & 0x03) << 22; |
| reg32 |= (config->gpi12_routing & 0x03) << 24; |
| reg32 |= (config->gpi13_routing & 0x03) << 26; |
| reg32 |= (config->gpi14_routing & 0x03) << 28; |
| reg32 |= (config->gpi15_routing & 0x03) << 30; |
| |
| pci_write_config32(dev, GPIO_ROUT, reg32); |
| } |
| |
| static void pch_power_options(struct device *dev) |
| { |
| u8 reg8; |
| u16 reg16; |
| u32 reg32; |
| const char *state; |
| u16 pmbase = get_pmbase(); |
| int pwr_on = CONFIG_MAINBOARD_POWER_FAILURE_STATE; |
| int nmi_option; |
| |
| /* Which state do we want to goto after g3 (power restored)? |
| * 0 == S0 Full On |
| * 1 == S5 Soft Off |
| * |
| * If the option is not existent (Laptops), use Kconfig setting. |
| */ |
| get_option(&pwr_on, "power_on_after_fail"); |
| |
| reg16 = pci_read_config16(dev, GEN_PMCON_3); |
| reg16 &= 0xfffe; |
| switch (pwr_on) { |
| case MAINBOARD_POWER_OFF: |
| reg16 |= 1; |
| state = "off"; |
| break; |
| case MAINBOARD_POWER_ON: |
| reg16 &= ~1; |
| state = "on"; |
| break; |
| case MAINBOARD_POWER_KEEP: |
| reg16 &= ~1; |
| state = "state keep"; |
| break; |
| default: |
| state = "undefined"; |
| } |
| |
| reg16 &= ~(3 << 4); /* SLP_S4# Assertion Stretch 4s */ |
| reg16 |= (1 << 3); /* SLP_S4# Assertion Stretch Enable */ |
| |
| reg16 &= ~(1 << 10); |
| reg16 |= (1 << 11); /* SLP_S3# Min Assertion Width 50ms */ |
| |
| reg16 |= (1 << 12); /* Disable SLP stretch after SUS well */ |
| |
| pci_write_config16(dev, GEN_PMCON_3, reg16); |
| printk(BIOS_INFO, "Set power %s after power failure.\n", state); |
| |
| /* Set up NMI on errors. */ |
| reg8 = inb(0x61); |
| reg8 &= 0x0f; /* Higher Nibble must be 0 */ |
| reg8 &= ~(1 << 3); /* IOCHK# NMI Enable */ |
| // reg8 &= ~(1 << 2); /* PCI SERR# Enable */ |
| reg8 |= (1 << 2); /* PCI SERR# Disable for now */ |
| outb(reg8, 0x61); |
| |
| reg8 = inb(0x70); |
| nmi_option = NMI_OFF; |
| get_option(&nmi_option, "nmi"); |
| if (nmi_option) { |
| printk(BIOS_INFO, "NMI sources enabled.\n"); |
| reg8 &= ~(1 << 7); /* Set NMI. */ |
| } else { |
| printk(BIOS_INFO, "NMI sources disabled.\n"); |
| reg8 |= (1 << 7); /* Can't mask NMI from PCI-E and NMI_NOW */ |
| } |
| outb(reg8, 0x70); |
| |
| /* Enable CPU_SLP# and Intel Speedstep, set SMI# rate down */ |
| reg16 = pci_read_config16(dev, GEN_PMCON_1); |
| reg16 &= ~(3 << 0); // SMI# rate 1 minute |
| reg16 &= ~(1 << 10); // Disable BIOS_PCI_EXP_EN for native PME |
| pci_write_config16(dev, GEN_PMCON_1, reg16); |
| |
| if (dev->chip_info) { |
| config_t *config = dev->chip_info; |
| |
| /* |
| * Set the board's GPI routing on LynxPoint-H. |
| * This is done as part of GPIO configuration on LynxPoint-LP. |
| */ |
| if (!pch_is_lp()) |
| pch_gpi_routing(dev, config); |
| |
| /* GPE setup based on device tree configuration */ |
| enable_all_gpe(config->gpe0_en_1, config->gpe0_en_2, |
| config->gpe0_en_3, config->gpe0_en_4); |
| |
| /* SMI setup based on device tree configuration */ |
| enable_alt_smi(config->alt_gp_smi_en); |
| } |
| |
| /* Set up power management block and determine sleep mode */ |
| reg32 = inl(pmbase + 0x04); // PM1_CNT |
| reg32 &= ~(7 << 10); // SLP_TYP |
| reg32 |= (1 << 0); // SCI_EN |
| outl(reg32, pmbase + 0x04); |
| |
| /* Clear magic status bits to prevent unexpected wake */ |
| reg32 = RCBA32(0x3310); |
| reg32 |= (1 << 4) | (1 << 5) | (1 << 0); |
| RCBA32(0x3310) = reg32; |
| |
| reg16 = RCBA16(0x3f02); |
| reg16 &= ~0xf; |
| RCBA16(0x3f02) = reg16; |
| } |
| |
| /* LynxPoint PCH Power Management init */ |
| static void lpt_pm_init(struct device *dev) |
| { |
| printk(BIOS_DEBUG, "LynxPoint PM init\n"); |
| } |
| |
| /* LynxPoint LP PCH Power Management init */ |
| static void lpt_lp_pm_init(struct device *dev) |
| { |
| struct southbridge_intel_lynxpoint_config *config = dev->chip_info; |
| u32 data; |
| |
| printk(BIOS_DEBUG, "LynxPoint LP PM init\n"); |
| |
| pci_write_config8(dev, 0xa9, 0x46); |
| |
| RCBA32_AND_OR(0x232c, ~1, 0); |
| |
| RCBA32_AND_OR(0x1100, ~0xc000, 0xc000); |
| RCBA32_OR(0x1100, 0x00000100); |
| RCBA32_OR(0x1100, 0x0000003f); |
| |
| RCBA32_AND_OR(0x2320, ~0x60, 0x10); |
| |
| RCBA32(0x3314) = 0x00012fff; |
| RCBA32(0x3318) = 0x0dcf0400; |
| RCBA32(0x3324) = 0x04000000; |
| RCBA32(0x3368) = 0x00041400; |
| RCBA32(0x3388) = 0x3f8ddbff; |
| RCBA32(0x33ac) = 0x00007001; |
| RCBA32(0x33b0) = 0x00181900; |
| RCBA32(0x33c0) = 0x00060A00; |
| RCBA32(0x33d0) = 0x06200840; |
| RCBA32(0x3a28) = 0x01010101; |
| RCBA32(0x3a2c) = 0x04040404; |
| RCBA32(0x2b1c) = 0x03808033; |
| RCBA32(0x2b34) = 0x80000009; |
| RCBA32(0x3348) = 0x022ddfff; |
| RCBA32(0x334c) = 0x00000001; |
| RCBA32(0x3358) = 0x0001c000; |
| RCBA32(0x3380) = 0x3f8ddbff; |
| RCBA32(0x3384) = 0x0001c7e1; |
| RCBA32(0x338c) = 0x0001c7e1; |
| RCBA32(0x3398) = 0x0001c000; |
| RCBA32(0x33a8) = 0x00181900; |
| RCBA32(0x33dc) = 0x00080000; |
| RCBA32(0x33e0) = 0x00000001; |
| RCBA32(0x3a20) = 0x00000404; |
| RCBA32(0x3a24) = 0x01010101; |
| RCBA32(0x3a30) = 0x01010101; |
| |
| RCBA32_OR(0x0410, 0x00000003); |
| RCBA32_OR(0x2618, 0x08000000); |
| RCBA32_OR(0x2300, 0x00000002); |
| RCBA32_OR(0x2600, 0x00000008); |
| |
| RCBA32(0x33b4) = 0x00007001; |
| RCBA32(0x3350) = 0x022ddfff; |
| RCBA32(0x3354) = 0x00000001; |
| |
| /* Power Optimizer */ |
| RCBA32_OR(0x33d4, 0x08000000); |
| RCBA32_OR(0x33c8, 0x00000080); |
| |
| RCBA32(0x2b10) = 0x0000883c; |
| RCBA32(0x2b14) = 0x1e0a4616; |
| RCBA32(0x2b24) = 0x40000005; |
| RCBA32(0x2b20) = 0x0005db01; |
| RCBA32(0x3a80) = 0x05145005; |
| |
| pci_or_config32(dev, 0xac, 1 << 21); |
| |
| pch_iobp_update(0xED00015C, ~(1 << 11), 0x00003700); |
| pch_iobp_update(0xED000118, ~0, 0x00c00000); |
| pch_iobp_update(0xED000120, ~0, 0x00240000); |
| pch_iobp_update(0xCA000000, ~0, 0x00000009); |
| |
| /* Set RCBA CIR28 0x3A84 based on SATA port enables */ |
| data = 0x00001005; |
| /* Port 3 and 2 disabled */ |
| if (config && (config->sata_port_map & ((1 << 3) | (1 << 2))) == 0) |
| data |= (1 << 24) | (1 << 26); |
| /* Port 1 and 0 disabled */ |
| if (config && (config->sata_port_map & ((1 << 1) | (1 << 0))) == 0) |
| data |= (1 << 20) | (1 << 18); |
| RCBA32(0x3a84) = data; |
| |
| /* Set RCBA 0x2b1c[29]=1 if DSP disabled */ |
| if (RCBA32(FD) & PCH_DISABLE_ADSPD) |
| RCBA32_OR(0x2b1c, (1 << 29)); |
| |
| /* Lock */ |
| RCBA32_OR(0x3a6c, 0x00000001); |
| |
| /* Set RCBA 0x33D4 after other setup */ |
| RCBA32_OR(0x33d4, 0x2fff2fb1); |
| |
| /* Set RCBA 0x33C8[15]=1 as last step */ |
| RCBA32_OR(0x33c8, (1 << 15)); |
| } |
| |
| static void enable_clock_gating(struct device *dev) |
| { |
| /* LynxPoint Mobile */ |
| u32 reg32; |
| u16 reg16; |
| |
| /* DMI */ |
| RCBA32_AND_OR(0x2234, ~0, 0xf); |
| reg16 = pci_read_config16(dev, GEN_PMCON_1); |
| reg16 |= (1 << 11) | (1 << 12) | (1 << 14); |
| reg16 |= (1 << 2); // PCI CLKRUN# Enable |
| pci_write_config16(dev, GEN_PMCON_1, reg16); |
| RCBA32_OR(0x900, (1 << 14)); |
| |
| reg32 = RCBA32(CG); |
| reg32 |= (1 << 22); // HDA Dynamic |
| reg32 |= (1 << 31); // LPC Dynamic |
| reg32 |= (1 << 16); // PCIe Dynamic |
| reg32 |= (1 << 27); // HPET Dynamic |
| reg32 |= (1 << 28); // GPIO Dynamic |
| RCBA32(CG) = reg32; |
| |
| RCBA32_OR(0x38c0, 0x7); // SPI Dynamic |
| } |
| |
| static void enable_lp_clock_gating(struct device *dev) |
| { |
| /* LynxPoint LP */ |
| u32 reg32; |
| u16 reg16; |
| |
| /* DMI */ |
| RCBA32_AND_OR(0x2234, ~0, 0xf); |
| reg16 = pci_read_config16(dev, GEN_PMCON_1); |
| reg16 &= ~((1 << 11) | (1 << 14)); |
| reg16 |= (1 << 5) | (1 << 6) | (1 << 7) | (1 << 12) | (1 << 13); |
| reg16 |= (1 << 2); // PCI CLKRUN# Enable |
| pci_write_config16(dev, GEN_PMCON_1, reg16); |
| |
| pci_or_config32(dev, 0x64, 1 << 6); |
| |
| /* |
| * RCBA + 0x2614[27:25,14:13,10,8] = 101,11,1,1 |
| * RCBA + 0x2614[23:16] = 0x20 |
| * RCBA + 0x2614[30:28] = 0x0 |
| * RCBA + 0x2614[26] = 1 (IF 0:2.0@0x08 >= 0x0b) |
| */ |
| RCBA32_AND_OR(0x2614, ~0x74000000, 0x0a206500); |
| |
| /* Check for LPT-LP B2 stepping and 0:31.0@0xFA > 4 */ |
| struct device *const gma = pcidev_on_root(2, 0); |
| if (gma && pci_read_config8(gma, 0x8) >= 0x0b) |
| RCBA32_OR(0x2614, (1 << 26)); |
| |
| RCBA32_OR(0x900, 0x0000031f); |
| |
| reg32 = RCBA32(CG); |
| if (RCBA32(0x3454) & (1 << 4)) |
| reg32 &= ~(1 << 29); // LPC Dynamic |
| else |
| reg32 |= (1 << 29); // LPC Dynamic |
| reg32 |= (1 << 31); // LP LPC |
| reg32 |= (1 << 30); // LP BLA |
| reg32 |= (1 << 28); // GPIO Dynamic |
| reg32 |= (1 << 27); // HPET Dynamic |
| reg32 |= (1 << 26); // Generic Platform Event Clock |
| if (RCBA32(BUC) & PCH_DISABLE_GBE) |
| reg32 |= (1 << 23); // GbE Static |
| reg32 |= (1 << 22); // HDA Dynamic |
| reg32 |= (1 << 16); // PCI Dynamic |
| RCBA32(CG) = reg32; |
| |
| RCBA32_OR(0x3434, 0x7); // LP LPC |
| |
| RCBA32_AND_OR(0x333c, 0xffcfffff, 0x00c00000); // SATA |
| |
| RCBA32_OR(0x38c0, 0x3c07); // SPI Dynamic |
| |
| pch_iobp_update(0xCF000000, ~0, 0x00007001); |
| pch_iobp_update(0xCE00C000, ~1, 0x00000000); // bit0=0 in BWG 1.4.0 |
| } |
| |
| static void pch_set_acpi_mode(void) |
| { |
| if (!acpi_is_wakeup_s3()) |
| apm_control(APM_CNT_ACPI_DISABLE); |
| } |
| |
| static void pch_disable_smm_only_flashing(struct device *dev) |
| { |
| printk(BIOS_SPEW, "Enabling BIOS updates outside of SMM... "); |
| |
| pci_and_config8(dev, BIOS_CNTL, ~(1 << 5)); |
| } |
| |
| static void pch_fixups(struct device *dev) |
| { |
| /* Indicate DRAM init done for MRC S3 to know it can resume */ |
| pci_or_config8(dev, GEN_PMCON_2, 1 << 7); |
| |
| /* |
| * Enable DMI ASPM in the PCH |
| */ |
| RCBA32_AND_OR(0x2304, ~(1 << 10), 0); |
| RCBA32_OR(0x21a4, (1 << 11) | (1 << 10)); |
| RCBA32_OR(0x21a8, 0x3); |
| } |
| |
| static void lpc_init(struct device *dev) |
| { |
| printk(BIOS_DEBUG, "pch: %s\n", __func__); |
| |
| /* IO APIC initialization. */ |
| pch_enable_ioapic(dev); |
| |
| pch_enable_serial_irqs(dev); |
| |
| /* Setup the PIRQ. */ |
| pch_pirq_init(dev); |
| |
| /* Setup power options. */ |
| pch_power_options(dev); |
| |
| /* Initialize power management */ |
| if (pch_is_lp()) { |
| lpt_lp_pm_init(dev); |
| enable_lp_clock_gating(dev); |
| } else { |
| lpt_pm_init(dev); |
| enable_clock_gating(dev); |
| } |
| |
| /* Initialize the real time clock. */ |
| sb_rtc_init(); |
| |
| /* Initialize ISA DMA. */ |
| isa_dma_init(); |
| |
| /* Initialize the High Precision Event Timers, if present. */ |
| enable_hpet(dev); |
| |
| setup_i8259(); |
| |
| /* Interrupt 9 should be level triggered (SCI) */ |
| i8259_configure_irq_trigger(9, 1); |
| |
| pch_disable_smm_only_flashing(dev); |
| |
| pch_set_acpi_mode(); |
| |
| pch_fixups(dev); |
| } |
| |
| static void pch_lpc_add_mmio_resources(struct device *dev) |
| { |
| u32 reg; |
| struct resource *res; |
| const u32 default_decode_base = IO_APIC_ADDR; |
| |
| /* |
| * Just report all resources from IO-APIC base to 4GiB. Don't mark |
| * them reserved as that may upset the OS if this range is marked |
| * as reserved in the e820. |
| */ |
| res = new_resource(dev, OIC); |
| res->base = default_decode_base; |
| res->size = 0 - default_decode_base; |
| res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| |
| /* RCBA */ |
| if ((uintptr_t)DEFAULT_RCBA < default_decode_base) { |
| res = new_resource(dev, RCBA); |
| res->base = (resource_t)(uintptr_t)DEFAULT_RCBA; |
| res->size = 16 * 1024; |
| res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | |
| IORESOURCE_FIXED | IORESOURCE_RESERVE; |
| } |
| |
| /* Check LPC Memory Decode register. */ |
| reg = pci_read_config32(dev, LGMR); |
| if (reg & 1) { |
| reg &= ~0xffff; |
| if (reg < default_decode_base) { |
| res = new_resource(dev, LGMR); |
| res->base = reg; |
| res->size = 16 * 1024; |
| res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | |
| IORESOURCE_FIXED | IORESOURCE_RESERVE; |
| } |
| } |
| } |
| |
| /* Default IO range claimed by the LPC device. The upper bound is exclusive. */ |
| #define LPC_DEFAULT_IO_RANGE_LOWER 0 |
| #define LPC_DEFAULT_IO_RANGE_UPPER 0x1000 |
| |
| static inline int pch_io_range_in_default(int base, int size) |
| { |
| /* Does it start above the range? */ |
| if (base >= LPC_DEFAULT_IO_RANGE_UPPER) |
| return 0; |
| |
| /* Is it entirely contained? */ |
| if (base >= LPC_DEFAULT_IO_RANGE_LOWER && |
| (base + size) < LPC_DEFAULT_IO_RANGE_UPPER) |
| return 1; |
| |
| /* This will return not in range for partial overlaps. */ |
| return 0; |
| } |
| |
| /* |
| * Note: this function assumes there is no overlap with the default LPC device's |
| * claimed range: LPC_DEFAULT_IO_RANGE_LOWER -> LPC_DEFAULT_IO_RANGE_UPPER. |
| */ |
| static void pch_lpc_add_io_resource(struct device *dev, u16 base, u16 size, |
| int index) |
| { |
| struct resource *res; |
| |
| if (pch_io_range_in_default(base, size)) |
| return; |
| |
| res = new_resource(dev, index); |
| res->base = base; |
| res->size = size; |
| res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| } |
| |
| static void pch_lpc_add_gen_io_resources(struct device *dev, int reg_value, |
| int index) |
| { |
| /* |
| * Check if the register is enabled. If so and the base exceeds the |
| * device's default, claim range and add the resource. |
| */ |
| if (reg_value & 1) { |
| u16 base = reg_value & 0xfffc; |
| u16 size = (0x3 | ((reg_value >> 16) & 0xfc)) + 1; |
| pch_lpc_add_io_resource(dev, base, size, index); |
| } |
| } |
| |
| static void pch_lpc_add_io_resources(struct device *dev) |
| { |
| struct resource *res; |
| |
| /* Add the default claimed IO range for the LPC device. */ |
| res = new_resource(dev, 0); |
| res->base = LPC_DEFAULT_IO_RANGE_LOWER; |
| res->size = LPC_DEFAULT_IO_RANGE_UPPER - LPC_DEFAULT_IO_RANGE_LOWER; |
| res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| |
| /* GPIOBASE */ |
| pch_lpc_add_io_resource(dev, get_gpiobase(), DEFAULT_GPIOSIZE, GPIO_BASE); |
| |
| /* PMBASE */ |
| pch_lpc_add_io_resource(dev, get_pmbase(), 256, PMBASE); |
| |
| /* LPC Generic IO Decode range. */ |
| if (dev->chip_info) { |
| config_t *config = dev->chip_info; |
| pch_lpc_add_gen_io_resources(dev, config->gen1_dec, LPC_GEN1_DEC); |
| pch_lpc_add_gen_io_resources(dev, config->gen2_dec, LPC_GEN2_DEC); |
| pch_lpc_add_gen_io_resources(dev, config->gen3_dec, LPC_GEN3_DEC); |
| pch_lpc_add_gen_io_resources(dev, config->gen4_dec, LPC_GEN4_DEC); |
| } |
| } |
| |
| static void pch_lpc_read_resources(struct device *dev) |
| { |
| /* Get the normal PCI resources of this device. */ |
| pci_dev_read_resources(dev); |
| |
| /* Add non-standard MMIO resources. */ |
| pch_lpc_add_mmio_resources(dev); |
| |
| /* Add IO resources. */ |
| pch_lpc_add_io_resources(dev); |
| } |
| |
| static void pch_lpc_enable(struct device *dev) |
| { |
| /* Enable PCH Display Port */ |
| RCBA16(DISPBDF) = 0x0010; |
| RCBA32_OR(FD2, PCH_ENABLE_DBDF); |
| |
| pch_enable(dev); |
| } |
| |
| static const char *lpc_acpi_name(const struct device *dev) |
| { |
| return "LPCB"; |
| } |
| |
| static void southbridge_fill_ssdt(const struct device *dev) |
| { |
| intel_acpi_gen_def_acpi_pirq(dev); |
| } |
| |
| static unsigned long southbridge_write_acpi_tables(const struct device *device, |
| unsigned long start, |
| struct acpi_rsdp *rsdp) |
| { |
| unsigned long current; |
| acpi_header_t *ssdt; |
| |
| current = start; |
| |
| /* Align ACPI tables to 16byte */ |
| current = acpi_align_current(current); |
| |
| /* |
| * We explicitly add these tables later on: |
| */ |
| current = acpi_write_hpet(device, current, rsdp); |
| |
| current = acpi_align_current(current); |
| |
| printk(BIOS_DEBUG, "ACPI: * SSDT2\n"); |
| ssdt = (acpi_header_t *)current; |
| acpi_create_serialio_ssdt(ssdt); |
| current += ssdt->length; |
| acpi_add_table(rsdp, ssdt); |
| current = acpi_align_current(current); |
| |
| printk(BIOS_DEBUG, "current = %lx\n", current); |
| return current; |
| } |
| |
| static void lpc_final(struct device *dev) |
| { |
| spi_finalize_ops(); |
| |
| if (acpi_is_wakeup_s3() || CONFIG(INTEL_CHIPSET_LOCKDOWN)) |
| apm_control(APM_CNT_FINALIZE); |
| } |
| |
| static struct device_operations device_ops = { |
| .read_resources = pch_lpc_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .acpi_fill_ssdt = southbridge_fill_ssdt, |
| .acpi_name = lpc_acpi_name, |
| .write_acpi_tables = southbridge_write_acpi_tables, |
| .init = lpc_init, |
| .final = lpc_final, |
| .enable = pch_lpc_enable, |
| .scan_bus = scan_static_bus, |
| .ops_pci = &pci_dev_ops_pci, |
| }; |
| |
| /* IDs for LPC device of Intel 8 Series Chipset (Lynx Point) */ |
| static const unsigned short pci_device_ids[] = { |
| PCI_DEVICE_ID_INTEL_LPT_MOBILE_SAMPLE, |
| PCI_DEVICE_ID_INTEL_LPT_DESKTOP_SAMPLE, |
| PCI_DEVICE_ID_INTEL_LPT_Z87, |
| PCI_DEVICE_ID_INTEL_LPT_Z85, |
| PCI_DEVICE_ID_INTEL_LPT_HM86, |
| PCI_DEVICE_ID_INTEL_LPT_H87, |
| PCI_DEVICE_ID_INTEL_LPT_HM87, |
| PCI_DEVICE_ID_INTEL_LPT_Q85, |
| PCI_DEVICE_ID_INTEL_LPT_Q87, |
| PCI_DEVICE_ID_INTEL_LPT_QM87, |
| PCI_DEVICE_ID_INTEL_LPT_B85, |
| PCI_DEVICE_ID_INTEL_LPT_C222, |
| PCI_DEVICE_ID_INTEL_LPT_C224, |
| PCI_DEVICE_ID_INTEL_LPT_C226, |
| PCI_DEVICE_ID_INTEL_LPT_H81, |
| PCI_DEVICE_ID_INTEL_LPT_LP_SAMPLE, |
| PCI_DEVICE_ID_INTEL_LPT_LP_PREMIUM, |
| PCI_DEVICE_ID_INTEL_LPT_LP_MAINSTREAM, |
| PCI_DEVICE_ID_INTEL_LPT_LP_VALUE, |
| 0 |
| }; |
| |
| static const struct pci_driver pch_lpc __pci_driver = { |
| .ops = &device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |