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target-ppc: Add pvr_match() callback
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So far it was enough to have a base PVR value and mask per CPU
family such as POWER7 or POWER8. However there CPUs which are
completely architecturally compatible but have different PVRs such
as POWER7/POWER7+ and POWER8/POWER8E. For these CPUs, top 16 bits
are CPU family and low 16 bits are the version. The families have
PVR base values different enough so defining a mask which
would cover both (or potentially more) CPUs within the family is
not possible.

This adds a pvr_match() callback to PowerPCCPUClass. The default
handler simply compares PVR defined in the class.

This implements ppc_pvr_match_power7/ppc_pvr_match_power8 callbacks
for POWER7/8 families. These check for POWER7/POWER7+ and POWER8/POWER8E.

This changes ppc_cpu_compare_class_pvr_mask() not to check masks but
use the pvr_match() callback.

Since all server CPUs use the same mask, this defines one mask
value - CPU_POWERPC_POWER_SERVER_MASK - which is used everywhere now.
This removes other mask definitions.

This removes pvr_mask from PowerPCCPUClass as it is not used anymore.
This removes pvr initialization for POWER7/8 families as it is not used
to find the class, the pvr_match() callback is used instead.

Signed-off-by: Alexey Kardashevskiy <[email protected]>
Signed-off-by: Alexander Graf <[email protected]>
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@aik @agraf
aik authored and agraf committed Jul 8, 2014
1 parent d6c23f8 commit 03ae413
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Showing 4 changed files with 37 additions and 21 deletions.
1 change: 0 additions & 1 deletion target-ppc/cpu-models.c
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,6 @@
PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc); \
\
pcc->pvr = _pvr; \
pcc->pvr_mask = CPU_POWERPC_DEFAULT_MASK; \
pcc->svr = _svr; \
dc->desc = _desc; \
} \
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6 changes: 1 addition & 5 deletions target-ppc/cpu-models.h
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,6 @@ extern PowerPCCPUAlias ppc_cpu_aliases[];
/*****************************************************************************/
/* PVR definitions for most known PowerPC */
enum {
CPU_POWERPC_DEFAULT_MASK = 0xFFFFFFFF,
/* PowerPC 401 family */
/* Generic PowerPC 401 */
#define CPU_POWERPC_401 CPU_POWERPC_401G2
Expand Down Expand Up @@ -553,17 +552,14 @@ enum {
CPU_POWERPC_POWER6 = 0x003E0000,
CPU_POWERPC_POWER6_5 = 0x0F000001, /* POWER6 in POWER5 mode */
CPU_POWERPC_POWER6A = 0x0F000002,
CPU_POWERPC_POWER_SERVER_MASK = 0xFFFF0000,
CPU_POWERPC_POWER7_BASE = 0x003F0000,
CPU_POWERPC_POWER7_MASK = 0xFFFF0000,
CPU_POWERPC_POWER7_v23 = 0x003F0203,
CPU_POWERPC_POWER7P_BASE = 0x004A0000,
CPU_POWERPC_POWER7P_MASK = 0xFFFF0000,
CPU_POWERPC_POWER7P_v21 = 0x004A0201,
CPU_POWERPC_POWER8E_BASE = 0x004B0000,
CPU_POWERPC_POWER8E_MASK = 0xFFFF0000,
CPU_POWERPC_POWER8E_v10 = 0x004B0100,
CPU_POWERPC_POWER8_BASE = 0x004D0000,
CPU_POWERPC_POWER8_MASK = 0xFFFF0000,
CPU_POWERPC_POWER8_v10 = 0x004D0100,
CPU_POWERPC_970 = 0x00390202,
CPU_POWERPC_970FX_v10 = 0x00391100,
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2 changes: 1 addition & 1 deletion target-ppc/cpu-qom.h
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Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,7 @@ typedef struct PowerPCCPUClass {
void (*parent_reset)(CPUState *cpu);

uint32_t pvr;
uint32_t pvr_mask;
bool (*pvr_match)(struct PowerPCCPUClass *pcc, uint32_t pvr);
uint64_t pcr_mask;
uint32_t svr;
uint64_t insns_flags;
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49 changes: 35 additions & 14 deletions target-ppc/translate_init.c
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Original file line number Diff line number Diff line change
Expand Up @@ -8062,6 +8062,17 @@ static void init_proc_POWER7 (CPUPPCState *env)
init_proc_book3s_64(env, BOOK3S_CPU_POWER7);
}

static bool ppc_pvr_match_power7(PowerPCCPUClass *pcc, uint32_t pvr)
{
if ((pvr & CPU_POWERPC_POWER_SERVER_MASK) == CPU_POWERPC_POWER7P_BASE) {
return true;
}
if ((pvr & CPU_POWERPC_POWER_SERVER_MASK) == CPU_POWERPC_POWER7_BASE) {
return true;
}
return false;
}

POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
Expand All @@ -8070,8 +8081,7 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
dc->fw_name = "PowerPC,POWER7";
dc->desc = "POWER7";
dc->props = powerpc_servercpu_properties;
pcc->pvr = CPU_POWERPC_POWER7_BASE;
pcc->pvr_mask = CPU_POWERPC_POWER7_MASK;
pcc->pvr_match = ppc_pvr_match_power7;
pcc->pcr_mask = PCR_COMPAT_2_05 | PCR_COMPAT_2_06;
pcc->init_proc = init_proc_POWER7;
pcc->check_pow = check_pow_nocheck;
Expand Down Expand Up @@ -8131,8 +8141,7 @@ POWERPC_FAMILY(POWER7P)(ObjectClass *oc, void *data)
dc->fw_name = "PowerPC,POWER7+";
dc->desc = "POWER7+";
dc->props = powerpc_servercpu_properties;
pcc->pvr = CPU_POWERPC_POWER7P_BASE;
pcc->pvr_mask = CPU_POWERPC_POWER7P_MASK;
pcc->pvr_match = ppc_pvr_match_power7;
pcc->pcr_mask = PCR_COMPAT_2_05 | PCR_COMPAT_2_06;
pcc->init_proc = init_proc_POWER7;
pcc->check_pow = check_pow_nocheck;
Expand Down Expand Up @@ -8189,6 +8198,17 @@ static void init_proc_POWER8(CPUPPCState *env)
init_proc_book3s_64(env, BOOK3S_CPU_POWER8);
}

static bool ppc_pvr_match_power8(PowerPCCPUClass *pcc, uint32_t pvr)
{
if ((pvr & CPU_POWERPC_POWER_SERVER_MASK) == CPU_POWERPC_POWER8E_BASE) {
return true;
}
if ((pvr & CPU_POWERPC_POWER_SERVER_MASK) == CPU_POWERPC_POWER8_BASE) {
return true;
}
return false;
}

POWERPC_FAMILY(POWER8E)(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
Expand All @@ -8197,8 +8217,7 @@ POWERPC_FAMILY(POWER8E)(ObjectClass *oc, void *data)
dc->fw_name = "PowerPC,POWER8";
dc->desc = "POWER8E";
dc->props = powerpc_servercpu_properties;
pcc->pvr = CPU_POWERPC_POWER8E_BASE;
pcc->pvr_mask = CPU_POWERPC_POWER8E_MASK;
pcc->pvr_match = ppc_pvr_match_power8;
pcc->pcr_mask = PCR_COMPAT_2_05 | PCR_COMPAT_2_06;
pcc->init_proc = init_proc_POWER8;
pcc->check_pow = check_pow_nocheck;
Expand Down Expand Up @@ -8256,13 +8275,10 @@ POWERPC_FAMILY(POWER8E)(ObjectClass *oc, void *data)
POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);

ppc_POWER8E_cpu_family_class_init(oc, data);

dc->desc = "POWER8";
pcc->pvr = CPU_POWERPC_POWER8_BASE;
pcc->pvr_mask = CPU_POWERPC_POWER8_MASK;
}
#endif /* defined (TARGET_PPC64) */

Expand Down Expand Up @@ -9245,7 +9261,6 @@ static gint ppc_cpu_compare_class_pvr_mask(gconstpointer a, gconstpointer b)
ObjectClass *oc = (ObjectClass *)a;
uint32_t pvr = *(uint32_t *)b;
PowerPCCPUClass *pcc = (PowerPCCPUClass *)a;
gint ret;

/* -cpu host does a PVR lookup during construction */
if (unlikely(strcmp(object_class_get_name(oc),
Expand All @@ -9257,9 +9272,11 @@ static gint ppc_cpu_compare_class_pvr_mask(gconstpointer a, gconstpointer b)
return -1;
}

ret = (((pcc->pvr & pcc->pvr_mask) == (pvr & pcc->pvr_mask)) ? 0 : -1);
if (pcc->pvr_match(pcc, pvr)) {
return 0;
}

return ret;
return -1;
}

PowerPCCPUClass *ppc_cpu_class_by_pvr_mask(uint32_t pvr)
Expand Down Expand Up @@ -9660,15 +9677,19 @@ static void ppc_cpu_initfn(Object *obj)
}
}

static bool ppc_pvr_match_default(PowerPCCPUClass *pcc, uint32_t pvr)
{
return pcc->pvr == pvr;
}

static void ppc_cpu_class_init(ObjectClass *oc, void *data)
{
PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
CPUClass *cc = CPU_CLASS(oc);
DeviceClass *dc = DEVICE_CLASS(oc);

pcc->parent_realize = dc->realize;
pcc->pvr = CPU_POWERPC_DEFAULT_MASK;
pcc->pvr_mask = CPU_POWERPC_DEFAULT_MASK;
pcc->pvr_match = ppc_pvr_match_default;
pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_always;
dc->realize = ppc_cpu_realizefn;
dc->unrealize = ppc_cpu_unrealizefn;
Expand Down

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