[Skiboot] [PATCH v3 1/2] xive: Update inits for DD2.0

[Benjamin Herrenschmidt]

This updates some inits based on information from the HW
designers. This includes enabling some new DD2.0 features
that we don't yet exploit.

Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
---
 hw/xive.c      | 29 +++++++++++++++++++++++++++--
 include/xive.h | 25 ++++++++++++++++++++-----
 2 files changed, 47 insertions(+), 7 deletions(-)

diff --git a/hw/xive.c b/hw/xive.c
index 4fd8a301..352ad3be 100644
--- a/hw/xive.c
+++ b/hw/xive.c
@@ -1671,9 +1671,13 @@ static bool xive_config_init(struct xive *x)
 #endif
 	val |= PC_TCTXT_CHIPID_OVERRIDE;
 	val |= PC_TCTXT_CFG_TARGET_EN;
-	/* Disable pressure relief as we hijack the field in the VPs */
-	val &= ~PC_TCTXT_CFG_STORE_ACK;
 	val = SETFIELD(PC_TCTXT_CHIPID, val, x->block_id);
+	if (x->rev >= XIVE_REV_2) {
+		val = SETFIELD(PC_TCTXT_INIT_AGE, val, 0x2);
+		val |= PC_TCTXT_CFG_LGS_EN;
+		/* Disable pressure relief as we hijack the field in the VPs */
+		val &= ~PC_TCTXT_CFG_STORE_ACK;
+	}
 	xive_regw(x, PC_TCTXT_CFG, val);
 	xive_dbg(x, "PC_TCTXT_CFG=%016llx\n", val);
 
@@ -1681,12 +1685,33 @@ static bool xive_config_init(struct xive *x)
 	if (x->rev < XIVE_REV_2)
 		return true;
 
+	val = xive_regr(x, CQ_CFG_PB_GEN);
+	/* 1-block-per-chip mode */
+	val = SETFIELD(CQ_INT_ADDR_OPT, val, 2);
+	xive_regw(x, CQ_CFG_PB_GEN, val);
+
 	/* Enable StoreEOI */
 	val = xive_regr(x, VC_SBC_CONFIG);
 	val |= VC_SBC_CONF_CPLX_CIST | VC_SBC_CONF_CIST_BOTH;
 	val |= VC_SBC_CONF_NO_UPD_PRF;
 	xive_regw(x, VC_SBC_CONFIG, val);
 
+	/* Enable block tracking */
+	val = xive_regr(x, PC_TCTXT_TRACK);
+	val |= PC_TCTXT_TRACK_EN;
+	xive_regw(x, PC_TCTXT_TRACK, val);
+
+	/* Enable relaxed ordering of trigger forwarding */
+	val = xive_regr(x, VC_AIB_TX_ORDER_TAG2);
+	val |= VC_AIB_TX_ORDER_TAG2_REL_TF;
+	xive_regw(x, VC_AIB_TX_ORDER_TAG2, val);
+
+	/* Enable new END s and u bits for silent escalate */
+	val = xive_regr(x, VC_EQC_CONFIG);
+	val |= VC_EQC_CONF_ENABLE_END_s_BIT;
+	val |= VC_EQC_CONF_ENABLE_END_u_BIT;
+	xive_regw(x, VC_EQC_CONFIG, val);
+
 	return true;
 }
 
diff --git a/include/xive.h b/include/xive.h
index 70f6499f..63ee77b3 100644
--- a/include/xive.h
+++ b/include/xive.h
@@ -25,6 +25,7 @@
 #define CQ_SWI_RSP		0x048
 #define X_CQ_CFG_PB_GEN		0x0a
 #define CQ_CFG_PB_GEN		0x050
+#define   CQ_INT_ADDR_OPT	PPC_BITMASK(14,15)
 #define X_CQ_IC_BAR		0x10
 #define X_CQ_MSGSND		0x0b
 #define CQ_MSGSND		0x058
@@ -75,10 +76,15 @@
 #define PC_TCTXT_CFG		0x400
 #define  PC_TCTXT_CFG_BLKGRP_EN		PPC_BIT(0)
 #define  PC_TCTXT_CFG_TARGET_EN		PPC_BIT(1)
+#define  PC_TCTXT_CFG_LGS_EN		PPC_BIT(2)
 #define  PC_TCTXT_CFG_STORE_ACK		PPC_BIT(3)
 #define  PC_TCTXT_CFG_HARD_CHIPID_BLK	PPC_BIT(8)
 #define  PC_TCTXT_CHIPID_OVERRIDE	PPC_BIT(9)
 #define  PC_TCTXT_CHIPID		PPC_BITMASK(12,15)
+#define  PC_TCTXT_INIT_AGE		PPC_BITMASK(30,31)
+#define X_PC_TCTXT_TRACK	0x101
+#define PC_TCTXT_TRACK		0x408
+#define  PC_TCTXT_TRACK_EN		PPC_BIT(0)
 #define X_PC_TCTXT_INDIR0	0x104
 #define PC_TCTXT_INDIR0		0x420
 #define  PC_TCTXT_INDIR_VALID		PPC_BIT(0)
@@ -174,6 +180,9 @@
 #define VC_IRQ_CONFIG_CASCADE2	0x858
 #define VC_IRQ_CONFIG_REDIST	0x860
 #define VC_IRQ_CONFIG_IPI_CASC	0x868
+#define X_VC_AIB_TX_ORDER_TAG2	0x22d
+#define  VC_AIB_TX_ORDER_TAG2_REL_TF	PPC_BIT(20)
+#define VC_AIB_TX_ORDER_TAG2	0x890
 #define X_VC_AT_MACRO_KILL	0x23e
 #define VC_AT_MACRO_KILL	0x8b0
 #define X_VC_AT_MACRO_KILL_MASK	0x23f
@@ -196,11 +205,17 @@
 #define X_VC_EQC_CWATCH_SPEC	0x215
 #define VC_EQC_CONFIG		0x920
 #define X_VC_EQC_CONFIG		0x214
-#define  VC_EQC_CONF_SYNC_IPI	PPC_BIT(32)
-#define  VC_EQC_CONF_SYNC_HW	PPC_BIT(33)
-#define  VC_EQC_CONF_SYNC_ESC1	PPC_BIT(34)
-#define  VC_EQC_CONF_SYNC_ESC2	PPC_BIT(35)
-#define  VC_EQC_CONF_SYNC_REDI	PPC_BIT(36)
+#define  VC_EQC_CONF_SYNC_IPI		PPC_BIT(32)
+#define  VC_EQC_CONF_SYNC_HW		PPC_BIT(33)
+#define  VC_EQC_CONF_SYNC_ESC1		PPC_BIT(34)
+#define  VC_EQC_CONF_SYNC_ESC2		PPC_BIT(35)
+#define  VC_EQC_CONF_SYNC_REDI		PPC_BIT(36)
+#define  VC_EQC_CONF_EQP_INTERLEAVE	PPC_BIT(38)
+#define  VC_EQC_CONF_ENABLE_END_s_BIT	PPC_BIT(39)
+#define  VC_EQC_CONF_ENABLE_END_u_BIT	PPC_BIT(40)
+#define  VC_EQC_CONF_ENABLE_END_c_BIT	PPC_BIT(41)
+#define  VC_EQC_CONF_ENABLE_MORE_QSZ	PPC_BIT(42)
+#define  VC_EQC_CONF_SKIP_ESCALATE	PPC_BIT(43)
 #define VC_EQC_CWATCH_SPEC	0x928
 #define  VC_EQC_CWATCH_CONFLICT	PPC_BIT(0)
 #define  VC_EQC_CWATCH_FULL	PPC_BIT(8)
-- 
2.13.6