| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008-2009 coresystems GmbH |
| * Copyright (C) 2013 Google Inc. |
| * Copyright (C) 2013-2014 Sage Electronic Engineering, LLC. |
| * |
| * 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 <stdint.h> |
| #include <arch/io.h> |
| #include <arch/ioapic.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_def.h> |
| #include <pc80/mc146818rtc.h> |
| #include <pc80/i8254.h> |
| #include <pc80/i8259.h> |
| #include <pc80/isa-dma.h> |
| |
| #include <baytrail/baytrail.h> |
| #include <baytrail/iomap.h> |
| #include <baytrail/irq.h> |
| #include <baytrail/lpc.h> |
| #include <baytrail/nvs.h> |
| #include <baytrail/pci_devs.h> |
| #include <baytrail/pmc.h> |
| #include <baytrail/ramstage.h> |
| #include "chip.h" |
| |
| #define ENABLE_ACPI_MODE_IN_COREBOOT 0 |
| #define TEST_SMM_FLASH_LOCKDOWN 0 |
| |
| typedef struct soc_intel_fsp_baytrail_config config_t; |
| |
| static inline void |
| add_mmio_resource(device_t dev, int i, unsigned long addr, unsigned long size) |
| { |
| mmio_resource(dev, i, addr >> 10, size >> 10); |
| } |
| |
| static void sc_add_mmio_resources(device_t dev) |
| { |
| #ifndef CONFIG_VIRTUAL_ROM_SIZE |
| #error CONFIG_VIRTUAL_ROM_SIZE must be set. |
| #endif |
| add_mmio_resource(dev, 0xfeb, ABORT_BASE_ADDRESS, ABORT_BASE_SIZE); |
| add_mmio_resource(dev, PBASE, PMC_BASE_ADDRESS, PMC_BASE_SIZE); |
| add_mmio_resource(dev, IOBASE, IO_BASE_ADDRESS, IO_BASE_SIZE); |
| add_mmio_resource(dev, IBASE, ILB_BASE_ADDRESS, ILB_BASE_SIZE); |
| add_mmio_resource(dev, SBASE, SPI_BASE_ADDRESS, SPI_BASE_SIZE); |
| add_mmio_resource(dev, MPBASE, MPHY_BASE_ADDRESS, MPHY_BASE_SIZE); |
| add_mmio_resource(dev, PUBASE, PUNIT_BASE_ADDRESS, PUNIT_BASE_SIZE); |
| add_mmio_resource(dev, RCBA, RCBA_BASE_ADDRESS, RCBA_BASE_SIZE); |
| add_mmio_resource(dev, 0xfff, 0xffffffff - CONFIG_VIRTUAL_ROM_SIZE + 1, |
| CONFIG_VIRTUAL_ROM_SIZE); /* BIOS ROM */ |
| add_mmio_resource(dev, 0xfec, IO_APIC_ADDR, 0x00001000); /* IOAPIC */ |
| } |
| |
| /* 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 void sc_enable_ioapic(struct device *dev) |
| { |
| int i; |
| u32 reg32; |
| volatile u32 *ioapic_index = (u32 *)(IO_APIC_ADDR); |
| volatile u32 *ioapic_data = (u32 *)(IO_APIC_ADDR + 0x10); |
| u8 *ilb_base = (u8 *)(pci_read_config32(dev, IBASE) & ~0x0f); |
| |
| /* |
| * Enable ACPI I/O and power management. |
| * Set SCI IRQ to IRQ9 |
| */ |
| write32(ilb_base + ILB_OIC, 0x100); /* AEN */ |
| reg32 = read32(ilb_base + ILB_OIC); /* Read back per BWG */ |
| write32(ilb_base + ILB_ACTL, 0); /* ACTL bit 2:0 SCIS IRQ9 */ |
| |
| *ioapic_index = 0; |
| *ioapic_data = (1 << 25); |
| |
| /* affirm full set of redirection table entries ("write once") */ |
| *ioapic_index = 1; |
| reg32 = *ioapic_data; |
| *ioapic_index = 1; |
| *ioapic_data = reg32; |
| |
| *ioapic_index = 0; |
| reg32 = *ioapic_data; |
| printk(BIOS_DEBUG, "Southbridge APIC ID = %x\n", (reg32 >> 24) & 0x0f); |
| if (reg32 != (1 << 25)) |
| die("APIC Error\n"); |
| |
| printk(BIOS_SPEW, "Dumping IOAPIC registers\n"); |
| for (i=0; i<3; i++) { |
| *ioapic_index = i; |
| printk(BIOS_SPEW, " reg 0x%04x:", i); |
| reg32 = *ioapic_data; |
| printk(BIOS_SPEW, " 0x%08x\n", reg32); |
| } |
| |
| *ioapic_index = 3; /* Select Boot Configuration register. */ |
| *ioapic_data = 1; /* Use Processor System Bus to deliver interrupts. */ |
| } |
| |
| static void sc_enable_serial_irqs(struct device *dev) |
| { |
| #ifdef SETUPSERIQ /* NOT defined. Remove when the TODO is done. */ |
| /* |
| * TODO: SERIRQ seems to have a number of problems on baytrail. |
| * With it enabled, we get some spurious interrupts (ps2) |
| * in seabios. It also caused IOCHK# NMIs. Remove it |
| * until we understand how it needs to be configured. |
| */ |
| u8 reg8; |
| u8 *ibase = (u8 *)(pci_read_config32(dev, IBASE) & ~0xF); |
| |
| /* |
| * Disable the IOCHK# NMI. Let the NMI handler enable it if it needs. |
| */ |
| reg8 = inb(0x61); |
| reg8 &= 0x0f; /* Higher Nibble must be 0 */ |
| reg8 |= (1 << 3); /* IOCHK# NMI Disable for now */ |
| outb(reg8, 0x61); |
| |
| write32(ibase + ILB_OIC, read32(ibase + ILB_OIC) | SIRQEN); |
| write8(ibase + ILB_SERIRQ_CNTL, SCNT_CONTINUOUS_MODE); |
| |
| #if !IS_ENABLED(CONFIG_SERIRQ_CONTINUOUS_MODE) |
| /* |
| * SoC requires that the System BIOS first set the SERIRQ logic to |
| * continuous mode operation for at least one frame before switching |
| * it into quiet mode operation. |
| */ |
| outb(0x00, 0xED); /* I/O Delay to get the 1 frame */ |
| write8(ibase + ILB_SERIRQ_CNTL, SCNT_QUIET_MODE); |
| #endif |
| #endif /* DON'T SET UP IRQS */ |
| } |
| |
| /* |
| * Write PCI config space IRQ assignments. PCI devices have the INT_LINE |
| * (0x3C) and INT_PIN (0x3D) registers which report interrupt routing |
| * information to operating systems and drivers. The INT_PIN register is |
| * generally read only and reports which interrupt pin A - D it uses. The |
| * INT_LINE register is configurable and reports which IRQ (generally the |
| * PIC IRQs 1 - 15) it will use. This needs to take interrupt pin swizzling |
| * on devices that are downstream on a PCI bridge into account. |
| * |
| * This function will loop through all enabled PCI devices and program the |
| * INT_LINE register with the correct PIC IRQ number for the INT_PIN that it |
| * uses. It then configures each interrupt in the pic to be level triggered. |
| */ |
| static void write_pci_config_irqs(void) |
| { |
| device_t irq_dev; |
| device_t targ_dev; |
| uint8_t int_line = 0; |
| uint8_t original_int_pin = 0; |
| uint8_t new_int_pin = 0; |
| uint16_t current_bdf = 0; |
| uint16_t parent_bdf = 0; |
| uint8_t pirq = 0; |
| uint8_t device_num = 0; |
| const struct baytrail_irq_route *ir = &global_baytrail_irq_route; |
| |
| if (ir == NULL) { |
| printk(BIOS_WARNING, "Warning: Can't write PCI IRQ assignments because" |
| " 'global_baytrail_irq_route' structure does not exist\n"); |
| return; |
| } |
| |
| /* |
| * Loop through all enabled devices and program their |
| * INT_LINE, INT_PIN registers from values taken from |
| * the Interrupt Route registers in the ILB |
| */ |
| printk(BIOS_DEBUG, "PCI_CFG IRQ: Write PCI config space IRQ assignments\n"); |
| for(irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { |
| |
| if ((irq_dev->path.type != DEVICE_PATH_PCI) || |
| (!irq_dev->enabled)) |
| continue; |
| |
| current_bdf = irq_dev->path.pci.devfn | |
| irq_dev->bus->secondary << 8; |
| |
| /* |
| * Step 1: Get the INT_PIN and device structure to look for |
| * in the pirq_data table defined in the mainboard directory. |
| */ |
| targ_dev = NULL; |
| new_int_pin = get_pci_irq_pins(irq_dev, &targ_dev); |
| if (targ_dev == NULL || new_int_pin < 1) |
| continue; |
| |
| /* Get the original INT_PIN for record keeping */ |
| original_int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); |
| |
| parent_bdf = targ_dev->path.pci.devfn |
| | targ_dev->bus->secondary << 8; |
| device_num = PCI_SLOT(parent_bdf); |
| |
| if (ir->pcidev[device_num] == 0) { |
| printk(BIOS_WARNING, |
| "Warning: PCI Device %d does not have an IRQ entry, skipping it\n", |
| device_num); |
| continue; |
| } |
| |
| /* Find the PIRQ that is attached to the INT_PIN this device uses */ |
| pirq = (ir->pcidev[device_num] >> ((new_int_pin - 1) * 4)) & 0xF; |
| |
| /* Get the INT_LINE this device/function will use */ |
| int_line = ir->pic[pirq]; |
| |
| if (int_line != PIRQ_PIC_IRQDISABLE) { |
| /* Set this IRQ to level triggered since it is used by a PCI device */ |
| i8259_configure_irq_trigger(int_line, IRQ_LEVEL_TRIGGERED); |
| /* Set the Interrupt Line register in PCI config space */ |
| pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line); |
| } else { |
| /* Set the Interrupt line register as "unknown or unused" */ |
| pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, |
| PIRQ_PIC_UNKNOWN_UNUSED); |
| } |
| |
| printk(BIOS_SPEW, "\tINT_PIN\t\t: %d (%s)\n", |
| original_int_pin, pin_to_str(original_int_pin)); |
| if (parent_bdf != current_bdf) |
| printk(BIOS_SPEW, "\tSwizzled to\t: %d (%s)\n", |
| new_int_pin, pin_to_str(new_int_pin)); |
| printk(BIOS_SPEW, "\tPIRQ\t\t: %c\n" |
| "\tINT_LINE\t: 0x%X (IRQ %d)\n", |
| 'A' + pirq, int_line, int_line); |
| } |
| printk(BIOS_DEBUG, "PCI_CFG IRQ: Finished writing PCI config space IRQ assignments\n"); |
| } |
| |
| static void sc_pirq_init(device_t dev) |
| { |
| int i, j; |
| int pirq; |
| u8 *pr_base = (u8 *)(ILB_BASE_ADDRESS + 0x08); |
| u16 *ir_base = (u16 *)(ILB_BASE_ADDRESS + 0x20); |
| u32 *actl = (u32 *)(ILB_BASE_ADDRESS + ACTL); |
| const struct baytrail_irq_route *ir = &global_baytrail_irq_route; |
| |
| /* Set up the PIRQ PIC routing based on static config. */ |
| printk(BIOS_SPEW, "Start writing IRQ assignments\n" |
| "PIRQ\tA \tB \tC \tD \tE \tF \tG \tH\n" |
| "IRQ "); |
| for (i = 0; i < NUM_PIRQS; i++) { |
| write8(pr_base + i, ir->pic[i]); |
| printk(BIOS_SPEW, "\t%d", ir->pic[i]); |
| } |
| printk(BIOS_SPEW, "\n\n"); |
| |
| /* Set up the per device PIRQ routing based on static config. */ |
| printk(BIOS_SPEW, "\t\t\tPIRQ[A-H] routed to each INT_PIN[A-D]\n" |
| "Dev\tINTA (IRQ)\tINTB (IRQ)\tINTC (IRQ)\tINTD (IRQ)\n"); |
| for (i = 0; i < NUM_OF_PCI_DEVS; i++) { |
| write16(ir_base + i, ir->pcidev[i]); |
| |
| /* If the entry is more than just 0, print it out */ |
| if(ir->pcidev[i]) { |
| printk(BIOS_SPEW, " %d: ", i); |
| for (j = 0; j < 4; j++) { |
| pirq = (ir->pcidev[i] >> (j * 4)) & 0xF; |
| printk(BIOS_SPEW, "\t%-4c (%d)", 'A' + pirq, ir->pic[pirq]); |
| } |
| printk(BIOS_SPEW, "\n"); |
| } |
| } |
| |
| /* Route SCI to IRQ9 */ |
| write32(actl, (read32(actl) & ~SCIS_MASK) | SCIS_IRQ9); |
| printk(BIOS_SPEW, "Finished writing IRQ assignments\n"); |
| |
| /* Write IRQ assignments to PCI config space */ |
| write_pci_config_irqs(); |
| } |
| |
| static inline int 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 sc_add_io_resource(device_t dev, int base, int size, int index) |
| { |
| struct resource *res; |
| |
| if (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 sc_add_io_resources(device_t dev) |
| { |
| struct resource *res; |
| u8 io_index = 0; |
| |
| /* |
| * Add the default claimed IO range for the LPC device |
| * and mark it as subtractive decode. |
| */ |
| res = new_resource(dev, IOINDEX_SUBTRACTIVE(io_index++, 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_SUBTRACTIVE | |
| IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| |
| /* GPIO */ |
| sc_add_io_resource(dev, GPIO_BASE_ADDRESS, GPIO_BASE_SIZE, GBASE); |
| |
| /* ACPI */ |
| sc_add_io_resource(dev, ACPI_BASE_ADDRESS, ACPI_BASE_SIZE, ABASE); |
| } |
| |
| static void sc_read_resources(device_t dev) |
| { |
| /* Get the normal PCI resources of this device. */ |
| pci_dev_read_resources(dev); |
| |
| /* Add non-standard MMIO resources. */ |
| sc_add_mmio_resources(dev); |
| |
| /* Add IO resources. */ |
| sc_add_io_resources(dev); |
| } |
| |
| static void enable_hpet(void) |
| { |
| } |
| |
| static void sc_init(struct device *dev) |
| { |
| u8 *ibase; |
| |
| printk(BIOS_DEBUG, "soc: southcluster_init\n"); |
| |
| ibase = (u8 *)(pci_read_config32(dev, IBASE) & ~0xF); |
| |
| write8(ibase + ILB_MC, 0); |
| |
| /* Set the value for PCI command register. */ |
| pci_write_config16(dev, PCI_COMMAND, |
| PCI_COMMAND_IO | PCI_COMMAND_MEMORY | |
| PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL); |
| |
| /* IO APIC initialization. */ |
| sc_enable_ioapic(dev); |
| |
| sc_enable_serial_irqs(dev); |
| |
| /* Setup the PIRQ. */ |
| sc_pirq_init(dev); |
| |
| /* Initialize the High Precision Event Timers, if present. */ |
| enable_hpet(); |
| |
| /* Initialize ISA DMA. */ |
| isa_dma_init(); |
| |
| setup_i8259(); |
| |
| setup_i8254(); |
| } |
| |
| /* |
| * Common code for the south cluster devices. |
| */ |
| |
| /* Set bit in function disable register to hide this device. */ |
| static void sc_disable_devfn(device_t dev) |
| { |
| u32 *func_dis = (u32 *)(PMC_BASE_ADDRESS + FUNC_DIS); |
| u32 *func_dis2 = (u32 *)(PMC_BASE_ADDRESS + FUNC_DIS2); |
| uint32_t fd_mask = 0; |
| uint32_t fd2_mask = 0; |
| |
| #define SET_DIS_MASK(name_) \ |
| case PCI_DEVFN(name_ ## _DEV, name_ ## _FUNC): \ |
| fd_mask |= name_ ## _DIS |
| #define SET_DIS_MASK2(name_) \ |
| case PCI_DEVFN(name_ ## _DEV, name_ ## _FUNC): \ |
| fd2_mask |= name_ ## _DIS |
| |
| switch (dev->path.pci.devfn) { |
| SET_DIS_MASK(LPE); |
| break; |
| SET_DIS_MASK(TXE); |
| break; |
| SET_DIS_MASK(PCIE_PORT1); |
| break; |
| SET_DIS_MASK(PCIE_PORT2); |
| break; |
| SET_DIS_MASK(PCIE_PORT3); |
| break; |
| SET_DIS_MASK(PCIE_PORT4); |
| break; |
| SET_DIS_MASK2(SMBUS); |
| break; |
| SET_DIS_MASK(OTG); |
| /* Disable OTG PHY when OTG is not available. */ |
| fd2_mask |= OTG_SS_PHY_DIS; |
| break; |
| } |
| |
| if (fd_mask != 0) { |
| write32(func_dis, read32(func_dis) | fd_mask); |
| /* Ensure posted write hits. */ |
| read32(func_dis); |
| } |
| |
| if (fd2_mask != 0) { |
| write32(func_dis2, read32(func_dis2) | fd2_mask); |
| /* Ensure posted write hits. */ |
| read32(func_dis2); |
| } |
| } |
| |
| static inline void set_d3hot_bits(device_t dev, int offset) |
| { |
| uint32_t reg8; |
| printk(BIOS_DEBUG, "Power management CAP offset 0x%x.\n", offset); |
| reg8 = pci_read_config8(dev, offset + 4); |
| reg8 |= 0x3; |
| pci_write_config8(dev, offset + 4, reg8); |
| } |
| |
| /* Parts of the audio subsystem are powered by the HDA device. Therefore, one |
| * cannot put HDA into D3Hot. Instead perform this workaround to make some of |
| * the audio paths work for LPE audio. */ |
| static void hda_work_around(device_t dev) |
| { |
| u32 *gctl = (u32 *)(TEMP_BASE_ADDRESS + 0x8); |
| |
| /* Need to set magic register 0x43 to 0xd7 in config space. */ |
| pci_write_config8(dev, 0x43, 0xd7); |
| |
| /* Need to set bit 0 of GCTL to take the device out of reset. However, |
| * that requires setting up the 64-bit BAR. */ |
| pci_write_config32(dev, PCI_BASE_ADDRESS_0, TEMP_BASE_ADDRESS); |
| pci_write_config32(dev, PCI_BASE_ADDRESS_1, 0); |
| pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY); |
| write32(gctl, read32(gctl) | 0x1); |
| pci_write_config8(dev, PCI_COMMAND, 0); |
| pci_write_config32(dev, PCI_BASE_ADDRESS_0, 0); |
| } |
| |
| static int place_device_in_d3hot(device_t dev) |
| { |
| unsigned offset; |
| |
| /* Parts of the HDA block are used for LPE audio as well. |
| * Therefore assume the HDA will never be put into D3Hot. */ |
| if (dev->path.pci.devfn == PCI_DEVFN(HDA_DEV, HDA_FUNC)) { |
| hda_work_around(dev); |
| return 0; |
| } |
| |
| offset = pci_find_capability(dev, PCI_CAP_ID_PM); |
| |
| if (offset != 0) { |
| set_d3hot_bits(dev, offset); |
| return 0; |
| } |
| |
| /* For some reason some of the devices don't have the capability |
| * pointer set correctly. Work around this by hard coding the offset. */ |
| #define DEV_CASE(name_) \ |
| case PCI_DEVFN(name_ ## _DEV, name_ ## _FUNC) |
| |
| switch (dev->path.pci.devfn) { |
| DEV_CASE(MIPI): |
| DEV_CASE(SDIO): |
| DEV_CASE(EMMC): |
| DEV_CASE(SD): |
| DEV_CASE(MMC45): |
| DEV_CASE(LPE): |
| DEV_CASE(SIO_DMA1): |
| DEV_CASE(I2C1): |
| DEV_CASE(I2C2): |
| DEV_CASE(I2C3): |
| DEV_CASE(I2C4): |
| DEV_CASE(I2C5): |
| DEV_CASE(I2C6): |
| DEV_CASE(I2C7): |
| DEV_CASE(SIO_DMA2): |
| DEV_CASE(PWM1): |
| DEV_CASE(PWM2): |
| DEV_CASE(HSUART1): |
| DEV_CASE(HSUART2): |
| DEV_CASE(SPI): |
| DEV_CASE(OTG): |
| offset = 0x80; |
| break; |
| DEV_CASE(SATA): |
| DEV_CASE(XHCI): |
| DEV_CASE(EHCI): |
| offset = 0x70; |
| break; |
| DEV_CASE(HDA): |
| DEV_CASE(SMBUS): |
| offset = 0x50; |
| break; |
| DEV_CASE(TXE): |
| /* TXE cannot be placed in D3Hot. */ |
| return 0; |
| break; |
| DEV_CASE(PCIE_PORT1): |
| DEV_CASE(PCIE_PORT2): |
| DEV_CASE(PCIE_PORT3): |
| DEV_CASE(PCIE_PORT4): |
| offset = 0xa0; |
| break; |
| } |
| |
| if (offset != 0) { |
| set_d3hot_bits(dev, offset); |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| /* Common PCI device function disable. */ |
| void southcluster_enable_dev(device_t dev) |
| { |
| uint32_t reg32; |
| |
| if (!dev->enabled) { |
| int slot = PCI_SLOT(dev->path.pci.devfn); |
| int func = PCI_FUNC(dev->path.pci.devfn); |
| printk(BIOS_DEBUG, "%s: Disabling device: %02x.%01x\n", |
| dev_path(dev), slot, func); |
| |
| /* Ensure memory, io, and bus master are all disabled */ |
| reg32 = pci_read_config32(dev, PCI_COMMAND); |
| reg32 &= ~(PCI_COMMAND_MASTER | |
| PCI_COMMAND_MEMORY | PCI_COMMAND_IO); |
| pci_write_config32(dev, PCI_COMMAND, reg32); |
| |
| /* Place device in D3Hot */ |
| if (place_device_in_d3hot(dev) < 0) { |
| printk(BIOS_WARNING, |
| "Could not place %02x.%01x into D3Hot. " |
| "Keeping device visible.\n", slot, func); |
| return; |
| } |
| /* Disable this device if possible */ |
| sc_disable_devfn(dev); |
| } else { |
| /* Enable SERR */ |
| reg32 = pci_read_config32(dev, PCI_COMMAND); |
| reg32 |= PCI_COMMAND_SERR; |
| pci_write_config32(dev, PCI_COMMAND, reg32); |
| } |
| } |
| |
| static struct device_operations device_ops = { |
| .read_resources = sc_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = NULL, |
| .init = sc_init, |
| .enable = southcluster_enable_dev, |
| .scan_bus = scan_static_bus, |
| .ops_pci = &soc_pci_ops, |
| }; |
| |
| static const struct pci_driver southcluster __pci_driver = { |
| .ops = &device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = LPC_DEVID, |
| }; |