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STOP: Clear CPPM_PECES on entry during power save cycle to prevent wa…
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…keup events

During the power save cycle, clear stop exit enables to prevent a hw generated
wakeup pig from overwriting the stop entry request.    In this mode, SGPE will
read the per thread PSCR information and restore the PECE Shadow

Key_Cronus_Test=PM_REGRESS

Change-Id: I2521b38918f23c5dac4aefc59968ead05ad29b4d
CQ: SW433304
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/60975
Tested-by: Jenkins Server <[email protected]>
Reviewed-by: Gregory S. Still <[email protected]>
Tested-by: FSP CI Jenkins <[email protected]>
Tested-by: Cronus HW CI <[email protected]>
Reviewed-by: YUE DU <[email protected]>
Reviewed-by: Jennifer A. Stofer <[email protected]>
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@vanderp @op-jenkins
vanderp authored and op-jenkins committed Jun 29, 2018
1 parent 016a745 commit e3d105d
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9 changes: 9 additions & 0 deletions import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_cme_stop_entry.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1637,6 +1637,15 @@ p9_cme_stop_entry()

pig.fields.req_intr_payload = G_cme_stop_record.req_level[core_index];


// If in block wakeup mode, disable all interrupts so the PPM PIG doesn't
// send one that could overwrite the stop entry request
// The SGPE will restore the CPPM PECE Shadow
if (G_cme_stop_record.core_blockwu & core_mask)
{
CME_PUTSCOM(CPPM_PECES, core_mask, BITS64(32, 4));
}

// put PIG and Wakeup_Notify_Select back to back as possible
send_pig_packet(pig.value, core_mask);

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119 changes: 119 additions & 0 deletions import/chips/p9/procedures/ppe_closed/sgpe/stop_gpe/p9_sgpe_stop_entry.c
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Original file line number Diff line number Diff line change
Expand Up @@ -287,6 +287,125 @@ p9_sgpe_stop_entry()
}
}

for (qloop = 0; qloop < MAX_QUADS; qloop++)
{
// if this ex is not up to entry, skip
if (!(ex = G_sgpe_stop_record.group.ex01[qloop]))
{
continue;
}

// If this quad is in block exit, copy the PSCR information back to the CPPM PECE Shadow
// Bit 8:13 correspond to 0:5, 8:13, 16:21, and 24:29. Bit 3 corresponds to 32,33,34,35
if (G_sgpe_stop_record.group.quad[VECTOR_BLOCKX] & BIT32(qloop))
{
if (G_sgpe_stop_record.group.ex01[qloop] & FST_EX_IN_QUAD)
{

cindex = qloop << 2;

if (G_sgpe_stop_record.group.core[VECTOR_CONFIG] & BIT32(cindex))
{
temp_data.value = 0;
GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS00, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) << 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 3;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS01, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6));
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 2;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS02, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 1;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS03, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 16;
temp_data.words.lower = (scom_data.words.upper & BIT32(3));

GPE_PUTSCOM(GPE_SCOM_ADDR_CORE(CPPM_PECES, cindex), temp_data.value);
}

cindex = (qloop << 2) + 1;

if (G_sgpe_stop_record.group.core[VECTOR_CONFIG] & BIT32(cindex))
{
temp_data.value = 0;
GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS10, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) << 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 3;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS11, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6));
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 2;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS12, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 1;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS13, qloop, 0), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 16;
temp_data.words.lower = (scom_data.words.upper & BIT32(3));

GPE_PUTSCOM(GPE_SCOM_ADDR_CORE(CPPM_PECES, cindex), temp_data.value);
}
}

if (G_sgpe_stop_record.group.ex01[qloop] & SND_EX_IN_QUAD)
{
cindex = (qloop << 2) + 2;

if (G_sgpe_stop_record.group.core[VECTOR_CONFIG] & BIT32(cindex))
{
temp_data.value = 0;
GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS00, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) << 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 3;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS01, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6));
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 2;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS02, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 1;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS03, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 16;
temp_data.words.lower = (scom_data.words.upper & BIT32(3));

GPE_PUTSCOM(GPE_SCOM_ADDR_CORE(CPPM_PECES, cindex), temp_data.value);
}

cindex = (qloop << 2) + 3;

if (G_sgpe_stop_record.group.core[VECTOR_CONFIG] & BIT32(cindex))
{
temp_data.value = 0;
GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS10, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) << 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 3;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS11, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6));
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 2;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS12, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 8;
temp_data.words.lower = (scom_data.words.upper & BIT32(3)) << 1;

GPE_GETSCOM(GPE_SCOM_ADDR_CME(CME_SCOM_PSCRS13, qloop, 1), scom_data.value);
temp_data.words.upper = (scom_data.words.upper & BITS32(8, 6)) >> 16;
temp_data.words.lower = (scom_data.words.upper & BIT32(3));

GPE_PUTSCOM(GPE_SCOM_ADDR_CORE(CPPM_PECES, cindex), temp_data.value);
}
}

PK_TRACE("Restored PECES due to block wakeup being active");

}
}


// Permanent workaround to save cme image size
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