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Add a read-only sysctl hw.pci.mcfg to mirror the tunable by the same name.

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MFC after:	1 week
This commit is contained in:
John Baldwin 2009-05-18 21:47:32 +00:00
parent 10f5c8be92
commit d3da228f37
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=192342
2 changed files with 10 additions and 0 deletions
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5
sys/amd64/pci/pci_cfgreg.c
View File

@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$");
#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>
@ -56,6 +57,8 @@ static void pciereg_cfgwrite(int bus, unsigned slot, unsigned func,
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);
static int cfgmech;
static vm_offset_t pcie_base;
static int pcie_minbus, pcie_maxbus;
@ -63,6 +66,8 @@ static uint32_t pcie_badslots;
static struct mtx pcicfg_mtx;
static int mcfg_enable = 1;
TUNABLE_INT("hw.pci.mcfg", &mcfg_enable);
SYSCTL_INT(_hw_pci, OID_AUTO, mcfg, CTLFLAG_RDTUN, &mcfg_enable, 0,
"Enable support for PCI-e memory mapped config access");
/*
* Initialise access to PCI configuration space

5
sys/i386/pci/pci_cfgreg.c
View File

@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$");
#include <sys/mutex.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <machine/pci_cfgreg.h>
@ -75,6 +76,8 @@ enum {
CFGMECH_PCIE,
};
SYSCTL_DECL(_hw_pci);
static TAILQ_HEAD(pcie_cfg_list, pcie_cfg_elem) pcie_list[MAXCPU];
static uint64_t pcie_base;
static int pcie_minbus, pcie_maxbus;
@ -84,6 +87,8 @@ static int devmax;
static struct mtx pcicfg_mtx;
static int mcfg_enable = 1;
TUNABLE_INT("hw.pci.mcfg", &mcfg_enable);
SYSCTL_INT(_hw_pci, OID_AUTO, mcfg, CTLFLAG_RDTUN, &mcfg_enable, 0,
"Enable support for PCI-e memory mapped config access");
static uint32_t pci_docfgregread(int bus, int slot, int func, int reg,
int bytes);