de2dd83fb9
is set and the right thing to do may be platform-dependent (it requires firmware on PowerNV, for instance). Make it a new platform method called platform_smp_timebase_sync(). MFC after: 3 weeks
388 lines
8.8 KiB
C
388 lines
8.8 KiB
C
/*-
|
|
* Copyright (c) 2008 Marcel Moolenaar
|
|
* 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 <machine/bus.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/hid.h>
|
|
#include <machine/intr_machdep.h>
|
|
#include <machine/pcb.h>
|
|
#include <machine/psl.h>
|
|
#include <machine/smp.h>
|
|
#include <machine/spr.h>
|
|
#include <machine/trap.h>
|
|
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <machine/ofw_machdep.h>
|
|
|
|
void *ap_pcpu;
|
|
|
|
static register_t bsp_state[8] __aligned(8);
|
|
|
|
static void cpudep_save_config(void *dummy);
|
|
SYSINIT(cpu_save_config, SI_SUB_CPU, SI_ORDER_ANY, cpudep_save_config, NULL);
|
|
|
|
void
|
|
cpudep_ap_early_bootstrap(void)
|
|
{
|
|
#ifndef __powerpc64__
|
|
register_t reg;
|
|
#endif
|
|
|
|
__asm __volatile("mtsprg 0, %0" :: "r"(ap_pcpu));
|
|
powerpc_sync();
|
|
|
|
switch (mfpvr() >> 16) {
|
|
case IBM970:
|
|
case IBM970FX:
|
|
case IBM970MP:
|
|
/* Restore HID4 and HID5, which are necessary for the MMU */
|
|
|
|
#ifdef __powerpc64__
|
|
mtspr(SPR_HID4, bsp_state[2]); powerpc_sync(); isync();
|
|
mtspr(SPR_HID5, bsp_state[3]); powerpc_sync(); isync();
|
|
#else
|
|
__asm __volatile("ld %0, 16(%2); sync; isync; \
|
|
mtspr %1, %0; sync; isync;"
|
|
: "=r"(reg) : "K"(SPR_HID4), "b"(bsp_state));
|
|
__asm __volatile("ld %0, 24(%2); sync; isync; \
|
|
mtspr %1, %0; sync; isync;"
|
|
: "=r"(reg) : "K"(SPR_HID5), "b"(bsp_state));
|
|
#endif
|
|
powerpc_sync();
|
|
break;
|
|
}
|
|
}
|
|
|
|
uintptr_t
|
|
cpudep_ap_bootstrap(void)
|
|
{
|
|
register_t msr, sp;
|
|
|
|
msr = PSL_KERNSET & ~PSL_EE;
|
|
mtmsr(msr);
|
|
|
|
pcpup->pc_curthread = pcpup->pc_idlethread;
|
|
#ifdef __powerpc64__
|
|
__asm __volatile("mr 13,%0" :: "r"(pcpup->pc_curthread));
|
|
#else
|
|
__asm __volatile("mr 2,%0" :: "r"(pcpup->pc_curthread));
|
|
#endif
|
|
pcpup->pc_curpcb = pcpup->pc_curthread->td_pcb;
|
|
sp = pcpup->pc_curpcb->pcb_sp;
|
|
|
|
return (sp);
|
|
}
|
|
|
|
static register_t
|
|
mpc74xx_l2_enable(register_t l2cr_config)
|
|
{
|
|
register_t ccr, bit;
|
|
uint16_t vers;
|
|
|
|
vers = mfpvr() >> 16;
|
|
switch (vers) {
|
|
case MPC7400:
|
|
case MPC7410:
|
|
bit = L2CR_L2IP;
|
|
break;
|
|
default:
|
|
bit = L2CR_L2I;
|
|
break;
|
|
}
|
|
|
|
ccr = mfspr(SPR_L2CR);
|
|
if (ccr & L2CR_L2E)
|
|
return (ccr);
|
|
|
|
/* Configure L2 cache. */
|
|
ccr = l2cr_config & ~L2CR_L2E;
|
|
mtspr(SPR_L2CR, ccr | L2CR_L2I);
|
|
do {
|
|
ccr = mfspr(SPR_L2CR);
|
|
} while (ccr & bit);
|
|
powerpc_sync();
|
|
mtspr(SPR_L2CR, l2cr_config);
|
|
powerpc_sync();
|
|
|
|
return (l2cr_config);
|
|
}
|
|
|
|
static register_t
|
|
mpc745x_l3_enable(register_t l3cr_config)
|
|
{
|
|
register_t ccr;
|
|
|
|
ccr = mfspr(SPR_L3CR);
|
|
if (ccr & L3CR_L3E)
|
|
return (ccr);
|
|
|
|
/* Configure L3 cache. */
|
|
ccr = l3cr_config & ~(L3CR_L3E | L3CR_L3I | L3CR_L3PE | L3CR_L3CLKEN);
|
|
mtspr(SPR_L3CR, ccr);
|
|
ccr |= 0x4000000; /* Magic, but documented. */
|
|
mtspr(SPR_L3CR, ccr);
|
|
ccr |= L3CR_L3CLKEN;
|
|
mtspr(SPR_L3CR, ccr);
|
|
mtspr(SPR_L3CR, ccr | L3CR_L3I);
|
|
while (mfspr(SPR_L3CR) & L3CR_L3I)
|
|
;
|
|
mtspr(SPR_L3CR, ccr & ~L3CR_L3CLKEN);
|
|
powerpc_sync();
|
|
DELAY(100);
|
|
mtspr(SPR_L3CR, ccr);
|
|
powerpc_sync();
|
|
DELAY(100);
|
|
ccr |= L3CR_L3E;
|
|
mtspr(SPR_L3CR, ccr);
|
|
powerpc_sync();
|
|
|
|
return(ccr);
|
|
}
|
|
|
|
static register_t
|
|
mpc74xx_l1d_enable(void)
|
|
{
|
|
register_t hid;
|
|
|
|
hid = mfspr(SPR_HID0);
|
|
if (hid & HID0_DCE)
|
|
return (hid);
|
|
|
|
/* Enable L1 D-cache */
|
|
hid |= HID0_DCE;
|
|
powerpc_sync();
|
|
mtspr(SPR_HID0, hid | HID0_DCFI);
|
|
powerpc_sync();
|
|
|
|
return (hid);
|
|
}
|
|
|
|
static register_t
|
|
mpc74xx_l1i_enable(void)
|
|
{
|
|
register_t hid;
|
|
|
|
hid = mfspr(SPR_HID0);
|
|
if (hid & HID0_ICE)
|
|
return (hid);
|
|
|
|
/* Enable L1 I-cache */
|
|
hid |= HID0_ICE;
|
|
isync();
|
|
mtspr(SPR_HID0, hid | HID0_ICFI);
|
|
isync();
|
|
|
|
return (hid);
|
|
}
|
|
|
|
static void
|
|
cpudep_save_config(void *dummy)
|
|
{
|
|
uint16_t vers;
|
|
|
|
vers = mfpvr() >> 16;
|
|
|
|
switch(vers) {
|
|
case IBM970:
|
|
case IBM970FX:
|
|
case IBM970MP:
|
|
#ifdef __powerpc64__
|
|
bsp_state[0] = mfspr(SPR_HID0);
|
|
bsp_state[1] = mfspr(SPR_HID1);
|
|
bsp_state[2] = mfspr(SPR_HID4);
|
|
bsp_state[3] = mfspr(SPR_HID5);
|
|
#else
|
|
__asm __volatile ("mfspr %0,%2; mr %1,%0; srdi %0,%0,32"
|
|
: "=r" (bsp_state[0]),"=r" (bsp_state[1]) : "K" (SPR_HID0));
|
|
__asm __volatile ("mfspr %0,%2; mr %1,%0; srdi %0,%0,32"
|
|
: "=r" (bsp_state[2]),"=r" (bsp_state[3]) : "K" (SPR_HID1));
|
|
__asm __volatile ("mfspr %0,%2; mr %1,%0; srdi %0,%0,32"
|
|
: "=r" (bsp_state[4]),"=r" (bsp_state[5]) : "K" (SPR_HID4));
|
|
__asm __volatile ("mfspr %0,%2; mr %1,%0; srdi %0,%0,32"
|
|
: "=r" (bsp_state[6]),"=r" (bsp_state[7]) : "K" (SPR_HID5));
|
|
#endif
|
|
|
|
powerpc_sync();
|
|
|
|
break;
|
|
case IBMCELLBE:
|
|
#ifdef NOTYET /* Causes problems if in instruction stream on 970 */
|
|
if (mfmsr() & PSL_HV) {
|
|
bsp_state[0] = mfspr(SPR_HID0);
|
|
bsp_state[1] = mfspr(SPR_HID1);
|
|
bsp_state[2] = mfspr(SPR_HID4);
|
|
bsp_state[3] = mfspr(SPR_HID6);
|
|
|
|
bsp_state[4] = mfspr(SPR_CELL_TSCR);
|
|
}
|
|
#endif
|
|
|
|
bsp_state[5] = mfspr(SPR_CELL_TSRL);
|
|
|
|
break;
|
|
case MPC7450:
|
|
case MPC7455:
|
|
case MPC7457:
|
|
/* Only MPC745x CPUs have an L3 cache. */
|
|
bsp_state[3] = mfspr(SPR_L3CR);
|
|
|
|
/* Fallthrough */
|
|
case MPC7400:
|
|
case MPC7410:
|
|
case MPC7447A:
|
|
case MPC7448:
|
|
bsp_state[2] = mfspr(SPR_L2CR);
|
|
bsp_state[1] = mfspr(SPR_HID1);
|
|
bsp_state[0] = mfspr(SPR_HID0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
cpudep_ap_setup()
|
|
{
|
|
register_t reg;
|
|
uint16_t vers;
|
|
|
|
vers = mfpvr() >> 16;
|
|
|
|
/* The following is needed for restoring from sleep. */
|
|
platform_smp_timebase_sync(0, 1);
|
|
|
|
switch(vers) {
|
|
case IBM970:
|
|
case IBM970FX:
|
|
case IBM970MP:
|
|
/* Set HIOR to 0 */
|
|
__asm __volatile("mtspr 311,%0" :: "r"(0));
|
|
powerpc_sync();
|
|
|
|
/*
|
|
* The 970 has strange rules about how to update HID registers.
|
|
* See Table 2-3, 970MP manual
|
|
*
|
|
* Note: HID4 and HID5 restored already in
|
|
* cpudep_ap_early_bootstrap()
|
|
*/
|
|
|
|
__asm __volatile("mtasr %0; sync" :: "r"(0));
|
|
#ifdef __powerpc64__
|
|
__asm __volatile(" \
|
|
sync; isync; \
|
|
mtspr %1, %0; \
|
|
mfspr %0, %1; mfspr %0, %1; mfspr %0, %1; \
|
|
mfspr %0, %1; mfspr %0, %1; mfspr %0, %1; \
|
|
sync; isync"
|
|
:: "r"(bsp_state[0]), "K"(SPR_HID0));
|
|
__asm __volatile("sync; isync; \
|
|
mtspr %1, %0; mtspr %1, %0; sync; isync"
|
|
:: "r"(bsp_state[1]), "K"(SPR_HID1));
|
|
#else
|
|
__asm __volatile(" \
|
|
ld %0,0(%2); \
|
|
sync; isync; \
|
|
mtspr %1, %0; \
|
|
mfspr %0, %1; mfspr %0, %1; mfspr %0, %1; \
|
|
mfspr %0, %1; mfspr %0, %1; mfspr %0, %1; \
|
|
sync; isync"
|
|
: "=r"(reg) : "K"(SPR_HID0), "b"(bsp_state));
|
|
__asm __volatile("ld %0, 8(%2); sync; isync; \
|
|
mtspr %1, %0; mtspr %1, %0; sync; isync"
|
|
: "=r"(reg) : "K"(SPR_HID1), "b"(bsp_state));
|
|
#endif
|
|
|
|
powerpc_sync();
|
|
break;
|
|
case IBMCELLBE:
|
|
#ifdef NOTYET /* Causes problems if in instruction stream on 970 */
|
|
if (mfmsr() & PSL_HV) {
|
|
mtspr(SPR_HID0, bsp_state[0]);
|
|
mtspr(SPR_HID1, bsp_state[1]);
|
|
mtspr(SPR_HID4, bsp_state[2]);
|
|
mtspr(SPR_HID6, bsp_state[3]);
|
|
|
|
mtspr(SPR_CELL_TSCR, bsp_state[4]);
|
|
}
|
|
#endif
|
|
|
|
mtspr(SPR_CELL_TSRL, bsp_state[5]);
|
|
|
|
break;
|
|
case MPC7400:
|
|
case MPC7410:
|
|
case MPC7447A:
|
|
case MPC7448:
|
|
case MPC7450:
|
|
case MPC7455:
|
|
case MPC7457:
|
|
/* XXX: Program the CPU ID into PIR */
|
|
__asm __volatile("mtspr 1023,%0" :: "r"(PCPU_GET(cpuid)));
|
|
|
|
powerpc_sync();
|
|
isync();
|
|
|
|
mtspr(SPR_HID0, bsp_state[0]); isync();
|
|
mtspr(SPR_HID1, bsp_state[1]); isync();
|
|
|
|
/* Now enable the L3 cache. */
|
|
switch (vers) {
|
|
case MPC7450:
|
|
case MPC7455:
|
|
case MPC7457:
|
|
/* Only MPC745x CPUs have an L3 cache. */
|
|
reg = mpc745x_l3_enable(bsp_state[3]);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
reg = mpc74xx_l2_enable(bsp_state[2]);
|
|
reg = mpc74xx_l1d_enable();
|
|
reg = mpc74xx_l1i_enable();
|
|
|
|
break;
|
|
default:
|
|
#ifdef __powerpc64__
|
|
if (!(mfmsr() & PSL_HV)) /* Rely on HV to have set things up */
|
|
break;
|
|
#endif
|
|
printf("WARNING: Unknown CPU type. Cache performace may be "
|
|
"suboptimal.\n");
|
|
break;
|
|
}
|
|
}
|
|
|