413 lines
9.8 KiB
C
413 lines
9.8 KiB
C
/*-
|
|
* Copyright (c) 2008 Marcel Moolenaar
|
|
* Copyright (c) 2009 Nathan Whitehorn
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/pcpu.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/smp.h>
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/hid.h>
|
|
#include <machine/platformvar.h>
|
|
#include <machine/pmap.h>
|
|
#include <machine/rtas.h>
|
|
#include <machine/smp.h>
|
|
#include <machine/spr.h>
|
|
#include <machine/trap.h>
|
|
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <machine/ofw_machdep.h>
|
|
|
|
#include "platform_if.h"
|
|
|
|
#ifdef SMP
|
|
extern void *ap_pcpu;
|
|
#endif
|
|
|
|
#ifdef __powerpc64__
|
|
static uint8_t splpar_vpa[640] __aligned(64);
|
|
#endif
|
|
|
|
static vm_offset_t realmaxaddr = VM_MAX_ADDRESS;
|
|
|
|
static int chrp_probe(platform_t);
|
|
static int chrp_attach(platform_t);
|
|
void chrp_mem_regions(platform_t, struct mem_region **phys, int *physsz,
|
|
struct mem_region **avail, int *availsz);
|
|
static vm_offset_t chrp_real_maxaddr(platform_t);
|
|
static u_long chrp_timebase_freq(platform_t, struct cpuref *cpuref);
|
|
static int chrp_smp_first_cpu(platform_t, struct cpuref *cpuref);
|
|
static int chrp_smp_next_cpu(platform_t, struct cpuref *cpuref);
|
|
static int chrp_smp_get_bsp(platform_t, struct cpuref *cpuref);
|
|
static void chrp_smp_ap_init(platform_t);
|
|
#ifdef SMP
|
|
static int chrp_smp_start_cpu(platform_t, struct pcpu *cpu);
|
|
static struct cpu_group *chrp_smp_topo(platform_t plat);
|
|
#endif
|
|
static void chrp_reset(platform_t);
|
|
#ifdef __powerpc64__
|
|
#include "phyp-hvcall.h"
|
|
static void phyp_cpu_idle(sbintime_t sbt);
|
|
#endif
|
|
|
|
static platform_method_t chrp_methods[] = {
|
|
PLATFORMMETHOD(platform_probe, chrp_probe),
|
|
PLATFORMMETHOD(platform_attach, chrp_attach),
|
|
PLATFORMMETHOD(platform_mem_regions, chrp_mem_regions),
|
|
PLATFORMMETHOD(platform_real_maxaddr, chrp_real_maxaddr),
|
|
PLATFORMMETHOD(platform_timebase_freq, chrp_timebase_freq),
|
|
|
|
PLATFORMMETHOD(platform_smp_ap_init, chrp_smp_ap_init),
|
|
PLATFORMMETHOD(platform_smp_first_cpu, chrp_smp_first_cpu),
|
|
PLATFORMMETHOD(platform_smp_next_cpu, chrp_smp_next_cpu),
|
|
PLATFORMMETHOD(platform_smp_get_bsp, chrp_smp_get_bsp),
|
|
#ifdef SMP
|
|
PLATFORMMETHOD(platform_smp_start_cpu, chrp_smp_start_cpu),
|
|
PLATFORMMETHOD(platform_smp_topo, chrp_smp_topo),
|
|
#endif
|
|
|
|
PLATFORMMETHOD(platform_reset, chrp_reset),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static platform_def_t chrp_platform = {
|
|
"chrp",
|
|
chrp_methods,
|
|
0
|
|
};
|
|
|
|
PLATFORM_DEF(chrp_platform);
|
|
|
|
static int
|
|
chrp_probe(platform_t plat)
|
|
{
|
|
if (OF_finddevice("/memory") != -1 || OF_finddevice("/memory@0") != -1)
|
|
return (BUS_PROBE_GENERIC);
|
|
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
chrp_attach(platform_t plat)
|
|
{
|
|
#ifdef __powerpc64__
|
|
/* XXX: check for /rtas/ibm,hypertas-functions? */
|
|
if (!(mfmsr() & PSL_HV)) {
|
|
struct mem_region *phys, *avail;
|
|
int nphys, navail;
|
|
mem_regions(&phys, &nphys, &avail, &navail);
|
|
realmaxaddr = phys[0].mr_size;
|
|
|
|
pmap_mmu_install("mmu_phyp", BUS_PROBE_SPECIFIC);
|
|
cpu_idle_hook = phyp_cpu_idle;
|
|
|
|
/* Set up important VPA fields */
|
|
bzero(splpar_vpa, sizeof(splpar_vpa));
|
|
splpar_vpa[4] = (uint8_t)((sizeof(splpar_vpa) >> 8) & 0xff);
|
|
splpar_vpa[5] = (uint8_t)(sizeof(splpar_vpa) & 0xff);
|
|
splpar_vpa[0xba] = 1; /* Maintain FPRs */
|
|
splpar_vpa[0xbb] = 1; /* Maintain PMCs */
|
|
splpar_vpa[0xfc] = 0xff; /* Maintain full SLB */
|
|
splpar_vpa[0xfd] = 0xff;
|
|
splpar_vpa[0xff] = 1; /* Maintain Altivec */
|
|
mb();
|
|
|
|
/* Set up hypervisor CPU stuff */
|
|
chrp_smp_ap_init(plat);
|
|
}
|
|
#endif
|
|
|
|
/* Some systems (e.g. QEMU) need Open Firmware to stand down */
|
|
ofw_quiesce();
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
chrp_mem_regions(platform_t plat, struct mem_region **phys, int *physsz,
|
|
struct mem_region **avail, int *availsz)
|
|
{
|
|
ofw_mem_regions(phys,physsz,avail,availsz);
|
|
}
|
|
|
|
static vm_offset_t
|
|
chrp_real_maxaddr(platform_t plat)
|
|
{
|
|
return (realmaxaddr);
|
|
}
|
|
|
|
static u_long
|
|
chrp_timebase_freq(platform_t plat, struct cpuref *cpuref)
|
|
{
|
|
phandle_t phandle;
|
|
int32_t ticks = -1;
|
|
|
|
phandle = cpuref->cr_hwref;
|
|
|
|
OF_getprop(phandle, "timebase-frequency", &ticks, sizeof(ticks));
|
|
|
|
if (ticks <= 0)
|
|
panic("Unable to determine timebase frequency!");
|
|
|
|
return (ticks);
|
|
}
|
|
|
|
static int
|
|
chrp_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
|
|
{
|
|
char buf[8];
|
|
phandle_t cpu, dev, root;
|
|
int res, cpuid;
|
|
|
|
root = OF_peer(0);
|
|
|
|
dev = OF_child(root);
|
|
while (dev != 0) {
|
|
res = OF_getprop(dev, "name", buf, sizeof(buf));
|
|
if (res > 0 && strcmp(buf, "cpus") == 0)
|
|
break;
|
|
dev = OF_peer(dev);
|
|
}
|
|
if (dev == 0) {
|
|
/*
|
|
* psim doesn't have a name property on the /cpus node,
|
|
* but it can be found directly
|
|
*/
|
|
dev = OF_finddevice("/cpus");
|
|
if (dev == 0)
|
|
return (ENOENT);
|
|
}
|
|
|
|
cpu = OF_child(dev);
|
|
|
|
while (cpu != 0) {
|
|
res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
|
|
if (res > 0 && strcmp(buf, "cpu") == 0)
|
|
break;
|
|
cpu = OF_peer(cpu);
|
|
}
|
|
if (cpu == 0)
|
|
return (ENOENT);
|
|
|
|
cpuref->cr_hwref = cpu;
|
|
res = OF_getprop(cpu, "ibm,ppc-interrupt-server#s", &cpuid,
|
|
sizeof(cpuid));
|
|
if (res <= 0)
|
|
res = OF_getprop(cpu, "reg", &cpuid, sizeof(cpuid));
|
|
if (res <= 0)
|
|
cpuid = 0;
|
|
cpuref->cr_cpuid = cpuid;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
chrp_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
|
|
{
|
|
char buf[8];
|
|
phandle_t cpu;
|
|
int i, res, cpuid;
|
|
|
|
/* Check for whether it should be the next thread */
|
|
res = OF_getproplen(cpuref->cr_hwref, "ibm,ppc-interrupt-server#s");
|
|
if (res > 0) {
|
|
cell_t interrupt_servers[res/sizeof(cell_t)];
|
|
OF_getprop(cpuref->cr_hwref, "ibm,ppc-interrupt-server#s",
|
|
interrupt_servers, res);
|
|
for (i = 0; i < res/sizeof(cell_t) - 1; i++) {
|
|
if (interrupt_servers[i] == cpuref->cr_cpuid) {
|
|
cpuref->cr_cpuid = interrupt_servers[i+1];
|
|
return (0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Next CPU core/package */
|
|
cpu = OF_peer(cpuref->cr_hwref);
|
|
while (cpu != 0) {
|
|
res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
|
|
if (res > 0 && strcmp(buf, "cpu") == 0)
|
|
break;
|
|
cpu = OF_peer(cpu);
|
|
}
|
|
if (cpu == 0)
|
|
return (ENOENT);
|
|
|
|
cpuref->cr_hwref = cpu;
|
|
res = OF_getprop(cpu, "ibm,ppc-interrupt-server#s", &cpuid,
|
|
sizeof(cpuid));
|
|
if (res <= 0)
|
|
res = OF_getprop(cpu, "reg", &cpuid, sizeof(cpuid));
|
|
if (res <= 0)
|
|
cpuid = 0;
|
|
cpuref->cr_cpuid = cpuid;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
chrp_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
|
|
{
|
|
ihandle_t inst;
|
|
phandle_t bsp, chosen;
|
|
int res, cpuid;
|
|
|
|
chosen = OF_finddevice("/chosen");
|
|
if (chosen == 0)
|
|
return (ENXIO);
|
|
|
|
res = OF_getprop(chosen, "cpu", &inst, sizeof(inst));
|
|
if (res < 0)
|
|
return (ENXIO);
|
|
|
|
bsp = OF_instance_to_package(inst);
|
|
|
|
/* Pick the primary thread. Can it be any other? */
|
|
cpuref->cr_hwref = bsp;
|
|
res = OF_getprop(bsp, "ibm,ppc-interrupt-server#s", &cpuid,
|
|
sizeof(cpuid));
|
|
if (res <= 0)
|
|
res = OF_getprop(bsp, "reg", &cpuid, sizeof(cpuid));
|
|
if (res <= 0)
|
|
cpuid = 0;
|
|
cpuref->cr_cpuid = cpuid;
|
|
|
|
return (0);
|
|
}
|
|
|
|
#ifdef SMP
|
|
static int
|
|
chrp_smp_start_cpu(platform_t plat, struct pcpu *pc)
|
|
{
|
|
cell_t start_cpu;
|
|
int result, err, timeout;
|
|
|
|
if (!rtas_exists()) {
|
|
printf("RTAS uninitialized: unable to start AP %d\n",
|
|
pc->pc_cpuid);
|
|
return (ENXIO);
|
|
}
|
|
|
|
start_cpu = rtas_token_lookup("start-cpu");
|
|
if (start_cpu == -1) {
|
|
printf("RTAS unknown method: unable to start AP %d\n",
|
|
pc->pc_cpuid);
|
|
return (ENXIO);
|
|
}
|
|
|
|
ap_pcpu = pc;
|
|
powerpc_sync();
|
|
|
|
result = rtas_call_method(start_cpu, 3, 1, pc->pc_cpuid, EXC_RST, pc,
|
|
&err);
|
|
if (result < 0 || err != 0) {
|
|
printf("RTAS error (%d/%d): unable to start AP %d\n",
|
|
result, err, pc->pc_cpuid);
|
|
return (ENXIO);
|
|
}
|
|
|
|
timeout = 10000;
|
|
while (!pc->pc_awake && timeout--)
|
|
DELAY(100);
|
|
|
|
return ((pc->pc_awake) ? 0 : EBUSY);
|
|
}
|
|
|
|
static struct cpu_group *
|
|
chrp_smp_topo(platform_t plat)
|
|
{
|
|
struct pcpu *pc, *last_pc;
|
|
int i, ncores, ncpus;
|
|
|
|
ncores = ncpus = 0;
|
|
last_pc = NULL;
|
|
for (i = 0; i <= mp_maxid; i++) {
|
|
pc = pcpu_find(i);
|
|
if (pc == NULL)
|
|
continue;
|
|
if (last_pc == NULL || pc->pc_hwref != last_pc->pc_hwref)
|
|
ncores++;
|
|
last_pc = pc;
|
|
ncpus++;
|
|
}
|
|
|
|
if (ncpus % ncores != 0) {
|
|
printf("WARNING: Irregular SMP topology. Performance may be "
|
|
"suboptimal (%d CPUS, %d cores)\n", ncpus, ncores);
|
|
return (smp_topo_none());
|
|
}
|
|
|
|
/* Don't do anything fancier for non-threaded SMP */
|
|
if (ncpus == ncores)
|
|
return (smp_topo_none());
|
|
|
|
return (smp_topo_1level(CG_SHARE_L1, ncpus / ncores, CG_FLAG_SMT));
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
chrp_reset(platform_t platform)
|
|
{
|
|
OF_reboot();
|
|
}
|
|
|
|
#ifdef __powerpc64__
|
|
static void
|
|
phyp_cpu_idle(sbintime_t sbt)
|
|
{
|
|
phyp_hcall(H_CEDE);
|
|
}
|
|
|
|
static void
|
|
chrp_smp_ap_init(platform_t platform)
|
|
{
|
|
if (!(mfmsr() & PSL_HV)) {
|
|
/* Set interrupt priority */
|
|
phyp_hcall(H_CPPR, 0xff);
|
|
|
|
/* Register VPA */
|
|
phyp_hcall(H_REGISTER_VPA, 1UL, PCPU_GET(cpuid), splpar_vpa);
|
|
}
|
|
}
|
|
#else
|
|
static void
|
|
chrp_smp_ap_init(platform_t platform)
|
|
{
|
|
}
|
|
#endif
|
|
|