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target/ppc: add support for hypervisor doorbells on book3s CPUs

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The hypervisor doorbells are used by skiboot and Linux on POWER9
processors to wake up secondaries.

This adds processor control support to the Server architecture by
reusing the Embedded support. They are very similar, only the bits
definition of the CPU identifier differ.

Still to be done is message broadcast to all threads of the same
processor.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2018-01-18 15:54:03 +01:00 • committed by David Gibson
parent 3a14ba4664
commit 7af1e7b022
5 changed files with 84 additions and 5 deletions
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25
target/ppc/translate.c
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@ -6170,7 +6170,12 @@ static void gen_msgclr(DisasContext *ctx)
GEN_PRIV;
#else
CHK_HV;
gen_helper_msgclr(cpu_env, cpu_gpr[rB(ctx->opcode)]);
/* 64-bit server processors compliant with arch 2.x */
if (ctx->insns_flags & PPC_SEGMENT_64B) {
gen_helper_book3s_msgclr(cpu_env, cpu_gpr[rB(ctx->opcode)]);
} else {
gen_helper_msgclr(cpu_env, cpu_gpr[rB(ctx->opcode)]);
}
#endif /* defined(CONFIG_USER_ONLY) */
}
@ -6180,10 +6185,24 @@ static void gen_msgsnd(DisasContext *ctx)
GEN_PRIV;
#else
CHK_HV;
gen_helper_msgsnd(cpu_gpr[rB(ctx->opcode)]);
/* 64-bit server processors compliant with arch 2.x */
if (ctx->insns_flags & PPC_SEGMENT_64B) {
gen_helper_book3s_msgsnd(cpu_gpr[rB(ctx->opcode)]);
} else {
gen_helper_msgsnd(cpu_gpr[rB(ctx->opcode)]);
}
#endif /* defined(CONFIG_USER_ONLY) */
}
static void gen_msgsync(DisasContext *ctx)
{
#if defined(CONFIG_USER_ONLY)
GEN_PRIV;
#else
CHK_HV;
#endif /* defined(CONFIG_USER_ONLY) */
/* interpreted as no-op */
}
#if defined(TARGET_PPC64)
static void gen_maddld(DisasContext *ctx)
@ -6664,6 +6683,8 @@ GEN_HANDLER2_E(msgsnd, "msgsnd", 0x1F, 0x0E, 0x06, 0x03ff0001,
PPC_NONE, PPC2_PRCNTL),
GEN_HANDLER2_E(msgclr, "msgclr", 0x1F, 0x0E, 0x07, 0x03ff0001,
PPC_NONE, PPC2_PRCNTL),
GEN_HANDLER2_E(msgsync, "msgsync", 0x1F, 0x16, 0x1B, 0x00000000,
PPC_NONE, PPC2_PRCNTL),
GEN_HANDLER(wrtee, 0x1F, 0x03, 0x04, 0x000FFC01, PPC_WRTEE),
GEN_HANDLER(wrteei, 0x1F, 0x03, 0x05, 0x000E7C01, PPC_WRTEE),
GEN_HANDLER(dlmzb, 0x1F, 0x0E, 0x02, 0x00000000, PPC_440_SPEC),