pci_cfgreg.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/kernel.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/pci_cfgreg.h>

Include dependency graph for pci_cfgreg.c:

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Macros
#define	PCIE_VADDR(base, reg, bus, slot, func)

Functions
	__FBSDID ("$FreeBSD$")
static uint32_t	pci_docfgregread (int bus, int slot, int func, int reg, int bytes)
static int	pciereg_cfgread (int bus, unsigned slot, unsigned func, unsigned reg, unsigned bytes)
static void	pciereg_cfgwrite (int bus, unsigned slot, unsigned func, unsigned reg, int data, unsigned bytes)
static int	pcireg_cfgread (int bus, int slot, int func, int reg, int bytes)
static void	pcireg_cfgwrite (int bus, int slot, int func, int reg, int data, int bytes)
	SYSCTL_DECL (_hw_pci)
	MTX_SYSINIT (pcicfg_mtx, &pcicfg_mtx, "pcicfg_mtx", MTX_SPIN)
	SYSCTL_INT (_hw_pci, OID_AUTO, mcfg, CTLFLAG_RDTUN, &mcfg_enable, 0, "Enable support for PCI-e memory mapped config access")
int	pci_cfgregopen (void)
u_int32_t	pci_cfgregread (int bus, int slot, int func, int reg, int bytes)
void	pci_cfgregwrite (int bus, int slot, int func, int reg, u_int32_t data, int bytes)
static int	pci_cfgenable (unsigned bus, unsigned slot, unsigned func, int reg, int bytes)
static void	pci_cfgdisable (void)
int	pcie_cfgregopen (uint64_t base, uint8_t minbus, uint8_t maxbus)

Variables
int	cfgmech = CFGMECH_1
static vm_offset_t	pcie_base
static int	pcie_minbus
static int	pcie_maxbus
static uint32_t	pcie_badslots
static struct mtx	pcicfg_mtx
static int	mcfg_enable = 1

Macro Definition Documentation

PCIE_VADDR

#define PCIE_VADDR	(		base,
			reg,
			bus,
			slot,
			func
	)

Value:

        ((base)                         +       \
        ((((bus) & 0xff) << 20)         |       \
        (((slot) & 0x1f) << 15)         |       \
        (((func) & 0x7) << 12)          |       \
        ((reg) & 0xfff)))

Definition at line 257 of file pci_cfgreg.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

MTX_SYSINIT()

MTX_SYSINIT	(	pcicfg_mtx	,
		&	pcicfg_mtx,
		"pcicfg_mtx"	,
		MTX_SPIN
	)

pci_cfgdisable()

static void pci_cfgdisable ( void  )

static

Definition at line 155 of file pci_cfgreg.c.

Referenced by pcireg_cfgread(), and pcireg_cfgwrite().

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pci_cfgenable()

static int pci_cfgenable ( unsigned  bus, unsigned  slot, unsigned  func, int  reg, int  bytes  )

static

Definition at line 139 of file pci_cfgreg.c.

References bus, func, PCI_BUSMAX, PCI_FUNCMAX, PCI_REGMAX, PCI_SLOTMAX, reg, and slot.

Referenced by pcireg_cfgread(), and pcireg_cfgwrite().

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pci_cfgregopen()

int pci_cfgregopen

(

void

)

Definition at line 75 of file pci_cfgreg.c.

Referenced by pcie_cfgregopen().

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pci_cfgregread()

u_int32_t pci_cfgregread	(	int	bus,
		int	slot,
		int	func,
		int	reg,
		int	bytes
	)

Definition at line 97 of file pci_cfgreg.c.

References bus, func, pci_docfgregread(), PCIR_INTLINE, reg, and slot.

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pci_cfgregwrite()

void pci_cfgregwrite	(	int	bus,
		int	slot,
		int	func,
		int	reg,
		u_int32_t	data,
		int	bytes
	)

Definition at line 122 of file pci_cfgreg.c.

References bus, cfgmech, data, func, pcie_badslots, pcie_maxbus, pcie_minbus, pciereg_cfgwrite(), pcireg_cfgwrite(), reg, and slot.

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pci_docfgregread()

static uint32_t pci_docfgregread ( int  bus, int  slot, int  func, int  reg, int  bytes  )

static

Definition at line 82 of file pci_cfgreg.c.

References bus, cfgmech, func, pcie_badslots, pcie_maxbus, pcie_minbus, pciereg_cfgread(), pcireg_cfgread(), reg, and slot.

Referenced by pci_cfgregread().

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pcie_cfgregopen()

int pcie_cfgregopen	(	uint64_t	base,
		uint8_t	minbus,
		uint8_t	maxbus
	)

Definition at line 215 of file pci_cfgreg.c.

References cfgmech, mcfg_enable, pci_cfgregopen(), PCI_SLOTMAX, pcie_badslots, pcie_base, pcie_maxbus, pcie_minbus, pciereg_cfgread(), pcireg_cfgread(), and slot.

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pciereg_cfgread()

static int pciereg_cfgread ( int  bus, unsigned  slot, unsigned  func, unsigned  reg, unsigned  bytes  )

static

Definition at line 273 of file pci_cfgreg.c.

References bus, data, func, PCI_FUNCMAX, PCI_SLOTMAX, pcie_base, pcie_maxbus, PCIE_REGMAX, PCIE_VADDR, reg, and slot.

Referenced by pci_docfgregread(), and pcie_cfgregopen().

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pciereg_cfgwrite()

static void pciereg_cfgwrite ( int  bus, unsigned  slot, unsigned  func, unsigned  reg, int  data, unsigned  bytes  )

static

Definition at line 304 of file pci_cfgreg.c.

References bus, data, func, PCI_FUNCMAX, PCI_SLOTMAX, pcie_base, pcie_maxbus, PCIE_REGMAX, PCIE_VADDR, reg, and slot.

Referenced by pci_cfgregwrite().

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pcireg_cfgread()

static int pcireg_cfgread ( int  bus, int  slot, int  func, int  reg, int  bytes  )

static

Definition at line 165 of file pci_cfgreg.c.

References bus, data, func, pci_cfgdisable(), pci_cfgenable(), pcicfg_mtx, reg, and slot.

Referenced by pci_docfgregread(), and pcie_cfgregopen().

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pcireg_cfgwrite()

static void pcireg_cfgwrite ( int  bus, int  slot, int  func, int  reg, int  data, int  bytes  )

static

Definition at line 191 of file pci_cfgreg.c.

References bus, data, func, pci_cfgdisable(), pci_cfgenable(), pcicfg_mtx, reg, and slot.

Referenced by pci_cfgregwrite().

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SYSCTL_DECL()

SYSCTL_DECL

(

_hw_pci

)

SYSCTL_INT()

SYSCTL_INT	(	_hw_pci	,
		OID_AUTO	,
		mcfg	,
		CTLFLAG_RDTUN	,
		&	mcfg_enable,
		0	,
		"Enable support for PCI-e memory mapped config access"
	)

Variable Documentation

cfgmech

int cfgmech = CFGMECH_1

Definition at line 63 of file pci_cfgreg.c.

Referenced by pci_cfgregwrite(), pci_docfgregread(), and pcie_cfgregopen().

mcfg_enable

int mcfg_enable = 1

static

Definition at line 70 of file pci_cfgreg.c.

Referenced by pcie_cfgregopen().

pcicfg_mtx

struct mtx pcicfg_mtx

static

Definition at line 68 of file pci_cfgreg.c.

Referenced by pcireg_cfgread(), and pcireg_cfgwrite().

pcie_badslots

uint32_t pcie_badslots

static

Definition at line 67 of file pci_cfgreg.c.

Referenced by pci_cfgregwrite(), pci_docfgregread(), and pcie_cfgregopen().

pcie_base

vm_offset_t pcie_base

static

Definition at line 65 of file pci_cfgreg.c.

Referenced by pcie_cfgregopen(), pciereg_cfgread(), and pciereg_cfgwrite().

pcie_maxbus

int pcie_maxbus

static

Definition at line 66 of file pci_cfgreg.c.

Referenced by pci_cfgregwrite(), pci_docfgregread(), pcie_cfgregopen(), pciereg_cfgread(), and pciereg_cfgwrite().

pcie_minbus

int pcie_minbus

static

Definition at line 66 of file pci_cfgreg.c.

Referenced by pci_cfgregwrite(), pci_docfgregread(), and pcie_cfgregopen().