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target-ppc: Add POWER8's Event Based Branch (EBB) control SPRs

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POWER8 supports Event-Based Branch Facility (EBB). It is controlled via
set of SPRs access to which should generate an "Facility Unavailable"
interrupt if the facilities are not enabled in FSCR for problem state.

This adds EBB SPRs.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexey Kardashevskiy 2014-06-04 22:51:01 +10:00 • committed by Alexander Graf
parent 80b3f79b99
commit 4ee4a03b38
2 changed files with 64 additions and 0 deletions
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57
target-ppc/translate_init.c
View file

@ -7717,6 +7717,62 @@ static void gen_spr_power8_tm(CPUPPCState *env)
0x00000000);
}
static void spr_read_ebb(void *opaque, int gprn, int sprn)
{
gen_fscr_facility_check(opaque, SPR_FSCR, FSCR_EBB, sprn, FSCR_IC_EBB);
spr_read_generic(opaque, gprn, sprn);
}
static void spr_write_ebb(void *opaque, int sprn, int gprn)
{
gen_fscr_facility_check(opaque, SPR_FSCR, FSCR_EBB, sprn, FSCR_IC_EBB);
spr_write_generic(opaque, sprn, gprn);
}
static void spr_read_ebb_upper32(void *opaque, int gprn, int sprn)
{
gen_fscr_facility_check(opaque, SPR_FSCR, FSCR_EBB, sprn, FSCR_IC_EBB);
spr_read_prev_upper32(opaque, gprn, sprn);
}
static void spr_write_ebb_upper32(void *opaque, int sprn, int gprn)
{
gen_fscr_facility_check(opaque, SPR_FSCR, FSCR_EBB, sprn, FSCR_IC_EBB);
spr_write_prev_upper32(opaque, sprn, gprn);
}
static void gen_spr_power8_ebb(CPUPPCState *env)
{
spr_register(env, SPR_BESCRS, "BESCRS",
&spr_read_ebb, &spr_write_ebb,
&spr_read_generic, &spr_write_generic,
0x00000000);
spr_register(env, SPR_BESCRSU, "BESCRSU",
&spr_read_ebb_upper32, &spr_write_ebb_upper32,
&spr_read_prev_upper32, &spr_write_prev_upper32,
0x00000000);
spr_register(env, SPR_BESCRR, "BESCRR",
&spr_read_ebb, &spr_write_ebb,
&spr_read_generic, &spr_write_generic,
0x00000000);
spr_register(env, SPR_BESCRRU, "BESCRRU",
&spr_read_ebb_upper32, &spr_write_ebb_upper32,
&spr_read_prev_upper32, &spr_write_prev_upper32,
0x00000000);
spr_register_kvm(env, SPR_EBBHR, "EBBHR",
&spr_read_ebb, &spr_write_ebb,
&spr_read_generic, &spr_write_generic,
KVM_REG_PPC_EBBHR, 0x00000000);
spr_register_kvm(env, SPR_EBBRR, "EBBRR",
&spr_read_ebb, &spr_write_ebb,
&spr_read_generic, &spr_write_generic,
KVM_REG_PPC_EBBRR, 0x00000000);
spr_register_kvm(env, SPR_BESCR, "BESCR",
&spr_read_ebb, &spr_write_ebb,
&spr_read_generic, &spr_write_generic,
KVM_REG_PPC_BESCR, 0x00000000);
}
static void gen_spr_power8_fscr(CPUPPCState *env)
{
#if defined(CONFIG_USER_ONLY)
@ -7775,6 +7831,7 @@ static void init_proc_book3s_64(CPUPPCState *env, int version)
if (version >= BOOK3S_CPU_POWER8) {
gen_spr_power8_tce_address_control(env);
gen_spr_power8_ids(env);
gen_spr_power8_ebb(env);
gen_spr_power8_fscr(env);
gen_spr_power8_pmu_sup(env);
gen_spr_power8_pmu_user(env);