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add cpu_idle support for 21066A based lca systems

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This commit is contained in:
ticso 2005-01-31 23:07:42 +00:00
parent f9a616f908
commit a52292b594
4 changed files with 41 additions and 1 deletions
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10
sys/alpha/alpha/machdep.c
View File

@ -1727,10 +1727,18 @@ cpu_halt(void)
prom_halt(1);
}
static int cpu_idle_hlt = 1;
SYSCTL_INT(_machdep, OID_AUTO, cpu_idle_hlt, CTLFLAG_RW,
&cpu_idle_hlt, 0, "Idle loop HLT enable");
/*
* call platform specific code to halt (until next interrupt) for the idle loop
*/
void
cpu_idle(void)
{
/* Insert code to halt (until next interrupt) for the idle loop */
if (cpu_idle_hlt && platform.cpu_idle != NULL)
platform.cpu_idle();
}
/*

1
sys/alpha/include/cpuconf.h
View File

@ -71,6 +71,7 @@ extern struct platform {
void (*clockintr)(void *);
void (*mcheck_handler)(unsigned long, struct trapframe *,
unsigned long, unsigned long);
void (*cpu_idle)(void);
void (*pci_intr_init)(void);
void (*pci_intr_map)(void *);
int (*pci_intr_route)(struct device *, struct device *, int);

29
sys/alpha/pci/lca.c
View File

@ -35,6 +35,8 @@ __FBSDID("$FreeBSD$");
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <sys/proc.h>
#include <sys/sched.h>
#include <alpha/pci/lcareg.h>
#include <alpha/pci/lcavar.h>
@ -222,6 +224,8 @@ static void
lca_machine_check(unsigned long mces, struct trapframe *framep,
unsigned long vector, unsigned long param);
static void lca_cpu_idle (void);
static int
lca_probe(device_t dev)
{
@ -234,6 +238,7 @@ lca_probe(device_t dev)
lca_init_sgmap();
platform.mcheck_handler = lca_machine_check;
platform.cpu_idle = lca_cpu_idle;
device_add_child(dev, "pcib", 0);
@ -270,5 +275,29 @@ lca_machine_check(unsigned long mces, struct trapframe *framep,
REGVAL64(LCA_IOC_STAT0) = stat0;
}
void
lca_cpu_idle (void)
{
/*
* 0x0 = 1
* 0x1 = 1.5
* 0x2 = 2
* 0x3 = 4
* 0x4 = 8
* 0x5 = 16
*/
long override = 0x0;
long primary = 0x5;
long dma_ovr = 1;
long intr_ovr = 1;
REGVAL64(LCA_PMR) =
(dma_ovr << 7) | (intr_ovr << 6) | (override << 3) | primary;
if (sched_runnable()) {
REGVAL64(LCA_PMR) =
(override << 3) | override;
}
}
DRIVER_MODULE(lca, root, lca_driver, lca_devclass, 0, 0);

2
sys/alpha/pci/lcareg.h
View File

@ -44,6 +44,8 @@
#define LCA_PCI_SPARSE 0x200000000L /* PCI Sparse Space */
#define LCA_PCI_DENSE 0x300000000L /* PCI Dense Space */
#define LCA_PMR 0x120000098L /* Power Management (21066A)*/
#define LCA_IOC_HAE LCA_IOC_BASE /* Host Address Ext. (64) */
#define IOC_HAE_ADDREXT 0x00000000f8000000UL
#define IOC_HAE_RSVSD 0xffffffff07ffffffUL