Quelle pci_x86.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Low - Level PCI Access for i386 machines .
*
* ( c ) 1999 Martin Mares < mj @ ucw . cz >
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/spinlock.h>
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt, ...) printk(fmt, ## __VA_ARGS__)
#else
#define DBG(fmt, ...) \
do { \
if (0 ) \
printk(fmt, ## __VA_ARGS__); \
} while (0 )
#endif
#define PCI_PROBE_BIOS 0 x0001
#define PCI_PROBE_CONF1 0 x0002
#define PCI_PROBE_CONF2 0 x0004
#define PCI_PROBE_MMCONF 0 x0008
#define PCI_PROBE_MASK 0 x000f
#define PCI_PROBE_NOEARLY 0 x0010
#define PCI_NO_CHECKS 0 x0400
#define PCI_USE_PIRQ_MASK 0 x0800
#define PCI_ASSIGN_ROMS 0 x1000
#define PCI_BIOS_IRQ_SCAN 0 x2000
#define PCI_ASSIGN_ALL_BUSSES 0 x4000
#define PCI_CAN_SKIP_ISA_ALIGN 0 x8000
#define PCI_USE__CRS 0 x10000
#define PCI_CHECK_ENABLE_AMD_MMCONF 0 x20000
#define PCI_HAS_IO_ECS 0 x40000
#define PCI_NOASSIGN_ROMS 0 x80000
#define PCI_ROOT_NO_CRS 0 x100000
#define PCI_NOASSIGN_BARS 0 x200000
#define PCI_BIG_ROOT_WINDOW 0 x400000
#define PCI_USE_E820 0 x800000
#define PCI_NO_E820 0 x1000000
extern unsigned int pci_probe;
extern unsigned long pirq_table_addr;
enum pci_bf_sort_state {
pci_bf_sort_default,
pci_force_nobf,
pci_force_bf,
pci_dmi_bf,
};
/* pci-i386.c */
void pcibios_resource_survey(void );
void pcibios_set_cache_line_size(void );
/* pci-pc.c */
extern int pcibios_last_bus;
extern struct pci_ops pci_root_ops;
void pcibios_scan_specific_bus(int busn);
/* pci-irq.c */
struct pci_dev;
struct irq_info {
u8 bus, devfn; /* Bus, device and function */
struct {
u8 link; /* IRQ line ID, chipset dependent,
0 = not routed */
u16 bitmap; /* Available IRQs */
} __attribute__((packed)) irq[4 ];
u8 slot; /* Slot number, 0=onboard */
u8 rfu;
} __attribute__((packed));
struct irq_routing_table {
u32 signature; /* PIRQ_SIGNATURE should be here */
u16 version; /* PIRQ_VERSION */
u16 size; /* Table size in bytes */
u8 rtr_bus, rtr_devfn; /* Where the interrupt router lies */
u16 exclusive_irqs; /* IRQs devoted exclusively to
PCI usage */
u16 rtr_vendor, rtr_device; /* Vendor and device ID of
interrupt router */
u32 miniport_data; /* Crap */
u8 rfu[11 ];
u8 checksum; /* Modulo 256 checksum must give 0 */
struct irq_info slots[];
} __attribute__((packed));
struct irt_routing_table {
u32 signature; /* IRT_SIGNATURE should be here */
u8 size; /* Number of entries provided */
u8 used; /* Number of entries actually used */
u16 exclusive_irqs; /* IRQs devoted exclusively to
PCI usage */
struct irq_info slots[];
} __attribute__((packed));
extern unsigned int pcibios_irq_mask;
extern raw_spinlock_t pci_config_lock;
extern int (*pcibios_enable_irq)(struct pci_dev *dev);
extern void (*pcibios_disable_irq)(struct pci_dev *dev);
extern bool mp_should_keep_irq(struct device *dev);
struct pci_raw_ops {
int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
int reg, int len, u32 *val);
int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn,
int reg, int len, u32 val);
};
extern const struct pci_raw_ops *raw_pci_ops;
extern const struct pci_raw_ops *raw_pci_ext_ops;
extern const struct pci_raw_ops pci_mmcfg;
extern const struct pci_raw_ops pci_direct_conf1;
extern bool port_cf9_safe;
/* arch_initcall level */
#ifdef CONFIG_PCI_DIRECT
extern int pci_direct_probe(void );
extern void pci_direct_init(int type);
#else
static inline int pci_direct_probe(void ) { return -1 ; }
static inline void pci_direct_init(int type) { }
#endif
#ifdef CONFIG_PCI_BIOS
extern void pci_pcbios_init(void );
#else
static inline void pci_pcbios_init(void ) { }
#endif
extern void __init dmi_check_pciprobe(void );
extern void __init dmi_check_skip_isa_align(void );
/* some common used subsys_initcalls */
#ifdef CONFIG_PCI
extern int __init pci_acpi_init(void );
#else
static inline int __init pci_acpi_init(void )
{
return -EINVAL;
}
#endif
extern void __init pcibios_irq_init(void );
extern int __init pcibios_init(void );
extern int pci_legacy_init(void );
extern void pcibios_fixup_irqs(void );
/* pci-mmconfig.c */
/* "PCI MMCONFIG %04x [bus %02x-%02x]" */
#define PCI_MMCFG_RESOURCE_NAME_LEN (22 + 4 + 2 + 2 )
struct pci_mmcfg_region {
struct list_head list;
struct resource res;
u64 address;
char __iomem *virt;
u16 segment;
u8 start_bus;
u8 end_bus;
char name[PCI_MMCFG_RESOURCE_NAME_LEN];
};
extern int __init pci_mmcfg_arch_init(void );
extern void __init pci_mmcfg_arch_free(void );
extern int pci_mmcfg_arch_map(struct pci_mmcfg_region *cfg);
extern void pci_mmcfg_arch_unmap(struct pci_mmcfg_region *cfg);
extern int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end,
phys_addr_t addr);
extern int pci_mmconfig_delete(u16 seg, u8 start, u8 end);
extern struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus);
extern struct pci_mmcfg_region *__init pci_mmconfig_add(int segment, int start,
int end, u64 addr);
extern struct list_head pci_mmcfg_list;
#define PCI_MMCFG_BUS_OFFSET(bus) ((bus) << 20 )
/*
* On AMD Fam10h CPUs , all PCI MMIO configuration space accesses must use
* % eax . No other source or target registers may be used . The following
* mmio_config_ * accessors enforce this . See " BIOS and Kernel Developer ' s
* Guide ( BKDG ) For AMD Family 10 h Processors " , rev . 3 . 48 , sec 2 . 11 . 1 ,
* " MMIO Configuration Coding Requirements " .
*/
static inline unsigned char mmio_config_readb(void __iomem *pos)
{
u8 val;
asm volatile ("movb (%1),%%al" : "=a" (val) : "r" (pos));
return val;
}
static inline unsigned short mmio_config_readw(void __iomem *pos)
{
u16 val;
asm volatile ("movw (%1),%%ax" : "=a" (val) : "r" (pos));
return val;
}
static inline unsigned int mmio_config_readl(void __iomem *pos)
{
u32 val;
asm volatile ("movl (%1),%%eax" : "=a" (val) : "r" (pos));
return val;
}
static inline void mmio_config_writeb(void __iomem *pos, u8 val)
{
asm volatile ("movb %%al,(%1)" : : "a" (val), "r" (pos) : "memory" );
}
static inline void mmio_config_writew(void __iomem *pos, u16 val)
{
asm volatile ("movw %%ax,(%1)" : : "a" (val), "r" (pos) : "memory" );
}
static inline void mmio_config_writel(void __iomem *pos, u32 val)
{
asm volatile ("movl %%eax,(%1)" : : "a" (val), "r" (pos) : "memory" );
}
#ifdef CONFIG_PCI
# ifdef CONFIG_ACPI
# define x86_default_pci_init pci_acpi_init
# else
# define x86_default_pci_init pci_legacy_init
# endif
# define x86_default_pci_init_irq pcibios_irq_init
# define x86_default_pci_fixup_irqs pcibios_fixup_irqs
#else
# define x86_default_pci_init NULL
# define x86_default_pci_init_irq NULL
# define x86_default_pci_fixup_irqs NULL
#endif
#if defined (CONFIG_PCI) && defined (CONFIG_ACPI)
extern bool pci_use_e820;
#else
#define pci_use_e820 false
#endif
Messung V0.5 in Prozent C=91 H=93 G=91
¤ Dauer der Verarbeitung: 0.1 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland
2026-10-10
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