#include <assert.h>
#include <console/console.h>
#include <device/pci.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <intelblocks/gpio.h>
#include <intelblocks/irq.h>
#include <intelblocks/lpc_lib.h>
#include <soc/pci_devs.h>
#include <southbridge/intel/common/acpi_pirq_gen.h>
#include <stdlib.h>
#include <types.h>

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Data Structures
struct	pin_info

Macros
#define	MIN_SHARED_IRQ 16

#define	MAX_SHARED_IRQ 23

#define	TOTAL_SHARED_IRQ (MAX_SHARED_IRQ - MIN_SHARED_IRQ + 1)

#define	MAX_IRQS 120

#define	IDX2PIN(i) (enum pci_pin)((i) + PCI_INT_A)

#define	PIN2IDX(p) (size_t)((p) - PCI_INT_A)

Functions
static int	find_free_unique_irq (void)

static enum pci_pin	find_free_pin (const struct pin_info pin_info[PCI_INT_MAX])

static enum pci_pin	find_shareable_pin (const struct pin_info pin_info[PCI_INT_MAX])

static enum pirq	find_global_least_used_pirq (void)

static int	pirq_to_irq (enum pirq pirq)

static bool	assign_pirq (struct pin_info pin_info[PCI_INT_MAX], enum pci_pin pin, enum pirq pirq)

static bool	assign_pin (enum pci_pin pin, unsigned int fn, enum pin_state state, struct pin_info *pin_info, enum pci_pin fn_pin_map[MAX_FNS])

static bool	assign_fixed_pins (const struct slot_irq_constraints constraints, struct pin_info pin_info, enum pci_pin fn_pin_map[MAX_FNS])

static bool	assign_fixed_pirqs (const struct slot_irq_constraints constraints, struct pin_info pin_info, enum pci_pin fn_pin_map[MAX_FNS])

static bool	assign_direct_irqs (const struct slot_irq_constraints constraints, struct pin_info pin_info, enum pci_pin fn_pin_map[MAX_FNS])

static bool	assign_shareable_pins (const struct slot_irq_constraints constraints, struct pin_info pin_info, enum pci_pin fn_pin_map[MAX_FNS])

static bool	assign_pirqs (struct pin_info pin_info[PCI_INT_MAX])

static void	add_entry (struct pci_irq_entry **head, pci_devfn_t devfn, enum pci_pin pin, unsigned int irq)

static void	add_slot_entries (struct pci_irq_entry **head, unsigned int slot, struct pin_info pin_info[PCI_INT_MAX], const enum pci_pin fn_pin_map[MAX_FNS])

static bool	assign_slot (struct pci_irq_entry *head, const struct slot_irq_constraints constraints)

bool	assign_pci_irqs (const struct slot_irq_constraints *constraints, size_t num_slots)

const struct pci_irq_entry *	get_cached_pci_irqs (void)

static enum pirq	irq_to_pirq (unsigned int irq)

bool	generate_pin_irq_map (void)

bool	irq_program_non_pch (void)

int	get_pci_devfn_irq (unsigned int devfn)

Variables
static unsigned int	irq_share_count [TOTAL_SHARED_IRQ]

static struct pci_irq_entry *	cached_entries

Macro Definition Documentation

◆ IDX2PIN

#define IDX2PIN ( i ) (enum pci_pin)((i) + PCI_INT_A)

Definition at line 21 of file irq.c.

◆ MAX_IRQS

#define MAX_IRQS 120

Definition at line 19 of file irq.c.

◆ MAX_SHARED_IRQ

#define MAX_SHARED_IRQ 23

Definition at line 17 of file irq.c.

◆ MIN_SHARED_IRQ

#define MIN_SHARED_IRQ 16

Definition at line 16 of file irq.c.

◆ PIN2IDX

#define PIN2IDX ( p ) (size_t)((p) - PCI_INT_A)

Definition at line 22 of file irq.c.

◆ TOTAL_SHARED_IRQ

#define TOTAL_SHARED_IRQ (MAX_SHARED_IRQ - MIN_SHARED_IRQ + 1)

Definition at line 18 of file irq.c.

Function Documentation

◆ add_entry()

static void add_entry	(	struct pci_irq_entry **	head,
		pci_devfn_t	devfn,
		enum pci_pin	pin,
		unsigned int	irq
	)

static

Definition at line 267 of file irq.c.

References pci_irq_entry::devfn, pci_irq_entry::irq, malloc(), pci_irq_entry::next, NULL, and pci_irq_entry::pin.

Referenced by add_slot_entries().

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◆ add_slot_entries()

static void add_slot_entries	(	struct pci_irq_entry **	head,
		unsigned int	slot,
		struct pin_info	pin_info[PCI_INT_MAX],
		const enum pci_pin	fn_pin_map[MAX_FNS]
	)

static

Definition at line 284 of file irq.c.

References add_entry(), pci_irq_entry::irq, MAX_FNS, PCI_DEVFN, PCI_INT_NONE, and PIN2IDX.

Referenced by assign_slot().

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◆ assign_direct_irqs()

static bool assign_direct_irqs	(	const struct slot_irq_constraints *	constraints,
		struct pin_info *	pin_info,
		enum pci_pin	fn_pin_map[MAX_FNS]
	)

static

Definition at line 197 of file irq.c.

References assign_pin(), BIOS_ERR, find_free_pin(), find_free_unique_irq(), INVALID_IRQ, pin_info::irq, MAX_FNS, PCI_INT_NONE, PIN2IDX, and printk.

Referenced by assign_slot().

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◆ assign_fixed_pins()

static bool assign_fixed_pins	(	const struct slot_irq_constraints *	constraints,
		struct pin_info *	pin_info,
		enum pci_pin	fn_pin_map[MAX_FNS]
	)

static

Definition at line 158 of file irq.c.

References assign_pin(), MAX_FNS, and PCI_INT_NONE.

Referenced by assign_slot().

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◆ assign_fixed_pirqs()

static bool assign_fixed_pirqs	(	const struct slot_irq_constraints *	constraints,
		struct pin_info *	pin_info,
		enum pci_pin	fn_pin_map[MAX_FNS]
	)

static

Definition at line 173 of file irq.c.

References assign_pirq(), BIOS_ERR, MAX_FNS, PCI_INT_NONE, PIRQ_INVALID, and printk.

Referenced by assign_slot().

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◆ assign_pci_irqs()

bool assign_pci_irqs	(	const struct slot_irq_constraints *	constraints,
		size_t	num_slots
	)

Definition at line 328 of file irq.c.

References assign_slot(), BIOS_INFO, cached_entries, pci_irq_entry::devfn, pci_irq_entry::irq, pci_irq_entry::next, PCI_FUNC, PCI_SLOT, pci_irq_entry::pin, pin_to_str(), and printk.

Referenced by fill_fsps_irq_params(), and platform_fsp_silicon_init_params_cb().

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◆ assign_pin()

static bool assign_pin	(	enum pci_pin	pin,
		unsigned int	fn,
		enum pin_state	state,
		struct pin_info *	pin_info,
		enum pci_pin	fn_pin_map[MAX_FNS]
	)

static

Definition at line 141 of file irq.c.

References BIOS_ERR, PCI_INT_D, PIN2IDX, printk, and pin_info::usage_count.

Referenced by assign_direct_irqs(), assign_fixed_pins(), and assign_shareable_pins().

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◆ assign_pirq()

static bool assign_pirq	(	struct pin_info	pin_info[PCI_INT_MAX],
		enum pci_pin	pin,
		enum pirq	pirq
	)

static

Definition at line 128 of file irq.c.

References BIOS_ERR, pin_info::irq, irq_share_count, PIN2IDX, PIRQ_H, pirq_idx(), pirq_to_irq(), and printk.

Referenced by assign_fixed_pirqs(), and assign_pirqs().

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◆ assign_pirqs()

static bool assign_pirqs ( struct pin_info pin_info[PCI_INT_MAX] )

static

Definition at line 250 of file irq.c.

References assign_pirq(), find_global_least_used_pirq(), IDX2PIN, PCI_INT_MAX, and PIRQ_INVALID.

Referenced by assign_slot().

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◆ assign_shareable_pins()

static bool assign_shareable_pins	(	const struct slot_irq_constraints *	constraints,
		struct pin_info *	pin_info,
		enum pci_pin	fn_pin_map[MAX_FNS]
	)

static

Definition at line 224 of file irq.c.

References assign_pin(), BIOS_ERR, find_free_pin(), find_shareable_pin(), MAX_FNS, PCI_INT_NONE, and printk.

Referenced by assign_slot().

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◆ assign_slot()

static bool assign_slot	(	struct pci_irq_entry **	head,
		const struct slot_irq_constraints *	constraints
	)

static

Definition at line 297 of file irq.c.

References add_slot_entries(), assign_direct_irqs(), assign_fixed_pins(), assign_fixed_pirqs(), assign_pirqs(), assign_shareable_pins(), MAX_FNS, and PCI_INT_MAX.

Referenced by assign_pci_irqs().

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◆ find_free_pin()

static enum pci_pin find_free_pin ( const struct pin_info pin_info[PCI_INT_MAX] )

static

Definition at line 62 of file irq.c.

References gpio_routes_ioapic_irq(), INVALID_IRQ, MAX_IRQS, and MAX_SHARED_IRQ.

Referenced by assign_direct_irqs(), and assign_shareable_pins().

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◆ find_free_unique_irq()

static int find_free_unique_irq ( void )

static

Definition at line 62 of file irq.c.

Referenced by assign_direct_irqs().

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◆ find_global_least_used_pirq()

static enum pirq find_global_least_used_pirq ( void )

static

Definition at line 62 of file irq.c.

Referenced by assign_pirqs().

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◆ find_shareable_pin()

static enum pci_pin find_shareable_pin ( const struct pin_info pin_info[PCI_INT_MAX] )

static

Definition at line 62 of file irq.c.

Referenced by assign_shareable_pins().

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◆ generate_pin_irq_map()

bool generate_pin_irq_map ( void )

Definition at line 365 of file irq.c.

References slot_pin_irq_map::apic_gsi, cached_entries, calloc(), free(), pic_pirq_map::gsi, intel_write_pci0_PRT(), irq_to_pirq(), is_slot_pin_assigned(), lpc_get_pic_pirq_routing(), MAX_SLOTS, PCI_INT_MAX, PCI_SLOT, slot_pin_irq_map::pic_pirq, slot_pin_irq_map::pin, PIRQ_COUNT, PIRQ_GSI, slot_pin_irq_map::slot, and pic_pirq_map::type.

Referenced by cpu_fill_ssdt().

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◆ get_cached_pci_irqs()

const struct pci_irq_entry* get_cached_pci_irqs ( void )

Definition at line 347 of file irq.c.

References cached_entries.

Referenced by pci_irq_to_fsp().

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◆ get_pci_devfn_irq()

int get_pci_devfn_irq ( unsigned int devfn )

Definition at line 433 of file irq.c.

References cached_entries, pci_irq_entry::devfn, INVALID_IRQ, pci_irq_entry::irq, and pci_irq_entry::next.

◆ irq_program_non_pch()

bool irq_program_non_pch ( void )

Definition at line 407 of file irq.c.

References cached_entries, pci_irq_entry::devfn, pci_irq_entry::irq, MIN_PCH_SLOT, pci_irq_entry::next, PCI_DEV, PCI_FUNC, PCI_INTERRUPT_LINE, PCI_INTERRUPT_PIN, pci_s_write_config8(), PCI_SLOT, and pci_irq_entry::pin.

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◆ irq_to_pirq()

static enum pirq irq_to_pirq ( unsigned int irq )

static

Definition at line 347 of file irq.c.

Referenced by generate_pin_irq_map().

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◆ pirq_to_irq()

static int pirq_to_irq ( enum pirq pirq )

static

Definition at line 123 of file irq.c.

References MIN_SHARED_IRQ, and pirq_idx().

Referenced by assign_pirq().

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Variable Documentation

◆ cached_entries

struct pci_irq_entry* cached_entries

static

Definition at line 326 of file irq.c.

Referenced by assign_pci_irqs(), generate_pin_irq_map(), get_cached_pci_irqs(), get_pci_devfn_irq(), and irq_program_non_pch().

◆ irq_share_count

unsigned int irq_share_count[TOTAL_SHARED_IRQ]

static

Definition at line 34 of file irq.c.

Referenced by assign_pirq().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ IDX2PIN

◆ MAX_IRQS

◆ MAX_SHARED_IRQ

◆ MIN_SHARED_IRQ

◆ PIN2IDX

◆ TOTAL_SHARED_IRQ

Function Documentation

◆ add_entry()

◆ add_slot_entries()

◆ assign_direct_irqs()

◆ assign_fixed_pins()

◆ assign_fixed_pirqs()

◆ assign_pci_irqs()

◆ assign_pin()

◆ assign_pirq()

◆ assign_pirqs()

◆ assign_shareable_pins()

◆ assign_slot()

◆ find_free_pin()

◆ find_free_unique_irq()

◆ find_global_least_used_pirq()

◆ find_shareable_pin()

◆ generate_pin_irq_map()

◆ get_cached_pci_irqs()

◆ get_pci_devfn_irq()

◆ irq_program_non_pch()

◆ irq_to_pirq()

◆ pirq_to_irq()

Variable Documentation

◆ cached_entries

◆ irq_share_count