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/*
* PCI defines and function prototypes
* Copyright 1994, Drew Eckhardt
* Copyright 1997--1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
*
* For more information, please consult the following manuals (look at
* http://www.pcisig.com/ for how to get them):
*
* PCI BIOS Specification
* PCI Local Bus Specification
* PCI to PCI Bridge Specification
* PCI System Design Guide
*/
#ifndef PCI_H
#define PCI_H
#if IS_ENABLED(CONFIG_PCI)
#include <stdint.h>
#include <stddef.h>
#include <arch/io.h>
#include <device/pci_def.h>
#include <device/resource.h>
#include <device/device.h>
#include <device/pci_ops.h>
#include <device/pci_rom.h>
/* Common pci operations without a standard interface */
struct pci_operations {
/* set the Subsystem IDs for the PCI device */
void (*set_subsystem)(struct device *dev, unsigned int vendor,
unsigned int device);
void (*set_L1_ss_latency)(struct device *dev, unsigned int off);
};
/* Common pci bus operations */
struct pci_bus_operations {
uint8_t (*read8)(struct bus *pbus, int bus, int devfn, int where);
uint16_t (*read16)(struct bus *pbus, int bus, int devfn, int where);
uint32_t (*read32)(struct bus *pbus, int bus, int devfn, int where);
void (*write8)(struct bus *pbus, int bus, int devfn, int where,
uint8_t val);
void (*write16)(struct bus *pbus, int bus, int devfn, int where,
uint16_t val);
void (*write32)(struct bus *pbus, int bus, int devfn, int where,
uint32_t val);
};
struct pci_driver {
const struct device_operations *ops;
unsigned short vendor;
unsigned short device;
const unsigned short *devices;
};
struct msix_entry {
union {
struct {
u32 lower_addr;
u32 upper_addr;
};
struct {
u64 addr;
};
};
u32 data;
u32 vec_control;
};
#ifdef __SIMPLE_DEVICE__
#define __pci_driver __attribute__((unused))
#else
#define __pci_driver __attribute__((used, __section__(".rodata.pci_driver")))
#endif
/** start of compile time generated pci driver array */
extern struct pci_driver _pci_drivers[];
/** end of compile time generated pci driver array */
extern struct pci_driver _epci_drivers[];
/* Set Subsystem ID operation for PCI devices */
extern struct pci_operations pci_dev_ops_pci;
extern struct device_operations default_pci_ops_dev;
extern struct device_operations default_pci_ops_bus;
void pci_dev_read_resources(struct device *dev);
void pci_bus_read_resources(struct device *dev);
void pci_dev_set_resources(struct device *dev);
void pci_dev_enable_resources(struct device *dev);
void pci_bus_enable_resources(struct device *dev);
void pci_bus_reset(struct bus *bus);
struct device *pci_probe_dev(struct device *dev, struct bus *bus,
unsigned int devfn);
void do_pci_scan_bridge(struct device *dev,
void (*do_scan_bus)(struct bus *bus,
unsigned int min_devfn, unsigned int max_devfn));
void pci_scan_bridge(struct device *bus);
void pci_scan_bus(struct bus *bus, unsigned int min_devfn,
unsigned int max_devfn);
uint8_t pci_moving_config8(struct device *dev, unsigned int reg);
uint16_t pci_moving_config16(struct device *dev, unsigned int reg);
uint32_t pci_moving_config32(struct device *dev, unsigned int reg);
struct resource *pci_get_resource(struct device *dev, unsigned long index);
void pci_dev_set_subsystem(struct device *dev, unsigned int vendor,
unsigned int device);
void pci_dev_init(struct device *dev);
unsigned int pci_match_simple_dev(struct device *dev, pci_devfn_t sdev);
const char *pin_to_str(int pin);
int get_pci_irq_pins(struct device *dev, struct device **parent_bdg);
void pci_assign_irqs(unsigned int bus, unsigned int slot,
const unsigned char pIntAtoD[4]);
const char *get_pci_class_name(struct device *dev);
const char *get_pci_subclass_name(struct device *dev);
size_t pci_msix_table_size(struct device *dev);
int pci_msix_table_bar(struct device *dev, u32 *offset, u8 *idx);
struct msix_entry *pci_msix_get_table(struct device *dev);
#define PCI_IO_BRIDGE_ALIGN 4096
#define PCI_MEM_BRIDGE_ALIGN (1024*1024)
static inline const struct pci_operations *ops_pci(struct device *dev)
{
const struct pci_operations *pops;
pops = 0;
if (dev && dev->ops)
pops = dev->ops->ops_pci;
return pops;
}
#define PCI_ID(VENDOR_ID, DEVICE_ID) \
((((DEVICE_ID) & 0xFFFF) << 16) | ((VENDOR_ID) & 0xFFFF))
pci_devfn_t pci_locate_device(unsigned int pci_id, pci_devfn_t dev);
pci_devfn_t pci_locate_device_on_bus(unsigned int pci_id, unsigned int bus);
#ifdef __SIMPLE_DEVICE__
unsigned int pci_find_next_capability(pci_devfn_t dev, unsigned int cap,
unsigned int last);
unsigned int pci_find_capability(pci_devfn_t dev, unsigned int cap);
#else /* !__SIMPLE_DEVICE__ */
unsigned int pci_find_next_capability(struct device *dev, unsigned int cap,
unsigned int last);
unsigned int pci_find_capability(struct device *dev, unsigned int cap);
#endif /* __SIMPLE_DEVICE__ */
void pci_early_mmio_window(pci_devfn_t p2p_bridge, u32 mmio_base,
u32 mmio_size);
int pci_early_device_probe(u8 bus, u8 dev, u32 mmio_base);
#ifndef __ROMCC__
static inline int pci_base_address_is_memory_space(unsigned int attr)
{
return (attr & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_MEMORY;
}
#endif
#endif /* CONFIG_PCI */
void pci_early_bridge_init(void);
#endif /* PCI_H */
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