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-rw-r--r--hw/intc/pnv_xive.c142
1 files changed, 106 insertions, 36 deletions
diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c
index 9ab77feee9..4dc92ef1e3 100644
--- a/hw/intc/pnv_xive.c
+++ b/hw/intc/pnv_xive.c
@@ -169,7 +169,7 @@ static uint64_t pnv_xive_vst_addr_indirect(PnvXive *xive, uint32_t type,
vsd = ldq_be_dma(&address_space_memory, vsd_addr);
if (!(vsd & VSD_ADDRESS_MASK)) {
- xive_error(xive, "VST: invalid %s entry %x !?", info->name, 0);
+ xive_error(xive, "VST: invalid %s entry %x !?", info->name, idx);
return 0;
}
@@ -190,7 +190,7 @@ static uint64_t pnv_xive_vst_addr_indirect(PnvXive *xive, uint32_t type,
vsd = ldq_be_dma(&address_space_memory, vsd_addr);
if (!(vsd & VSD_ADDRESS_MASK)) {
- xive_error(xive, "VST: invalid %s entry %x !?", info->name, 0);
+ xive_error(xive, "VST: invalid %s entry %x !?", info->name, idx);
return 0;
}
@@ -294,8 +294,12 @@ static int pnv_xive_write_end(XiveRouter *xrtr, uint8_t blk, uint32_t idx,
word_number);
}
-static int pnv_xive_end_update(PnvXive *xive, uint8_t blk, uint32_t idx)
+static int pnv_xive_end_update(PnvXive *xive)
{
+ uint8_t blk = GETFIELD(VC_EQC_CWATCH_BLOCKID,
+ xive->regs[(VC_EQC_CWATCH_SPEC >> 3)]);
+ uint32_t idx = GETFIELD(VC_EQC_CWATCH_OFFSET,
+ xive->regs[(VC_EQC_CWATCH_SPEC >> 3)]);
int i;
uint64_t eqc_watch[4];
@@ -307,6 +311,24 @@ static int pnv_xive_end_update(PnvXive *xive, uint8_t blk, uint32_t idx)
XIVE_VST_WORD_ALL);
}
+static void pnv_xive_end_cache_load(PnvXive *xive)
+{
+ uint8_t blk = GETFIELD(VC_EQC_CWATCH_BLOCKID,
+ xive->regs[(VC_EQC_CWATCH_SPEC >> 3)]);
+ uint32_t idx = GETFIELD(VC_EQC_CWATCH_OFFSET,
+ xive->regs[(VC_EQC_CWATCH_SPEC >> 3)]);
+ uint64_t eqc_watch[4] = { 0 };
+ int i;
+
+ if (pnv_xive_vst_read(xive, VST_TSEL_EQDT, blk, idx, eqc_watch)) {
+ xive_error(xive, "VST: no END entry %x/%x !?", blk, idx);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(eqc_watch); i++) {
+ xive->regs[(VC_EQC_CWATCH_DAT0 >> 3) + i] = be64_to_cpu(eqc_watch[i]);
+ }
+}
+
static int pnv_xive_get_nvt(XiveRouter *xrtr, uint8_t blk, uint32_t idx,
XiveNVT *nvt)
{
@@ -320,8 +342,12 @@ static int pnv_xive_write_nvt(XiveRouter *xrtr, uint8_t blk, uint32_t idx,
word_number);
}
-static int pnv_xive_nvt_update(PnvXive *xive, uint8_t blk, uint32_t idx)
+static int pnv_xive_nvt_update(PnvXive *xive)
{
+ uint8_t blk = GETFIELD(PC_VPC_CWATCH_BLOCKID,
+ xive->regs[(PC_VPC_CWATCH_SPEC >> 3)]);
+ uint32_t idx = GETFIELD(PC_VPC_CWATCH_OFFSET,
+ xive->regs[(PC_VPC_CWATCH_SPEC >> 3)]);
int i;
uint64_t vpc_watch[8];
@@ -333,6 +359,24 @@ static int pnv_xive_nvt_update(PnvXive *xive, uint8_t blk, uint32_t idx)
XIVE_VST_WORD_ALL);
}
+static void pnv_xive_nvt_cache_load(PnvXive *xive)
+{
+ uint8_t blk = GETFIELD(PC_VPC_CWATCH_BLOCKID,
+ xive->regs[(PC_VPC_CWATCH_SPEC >> 3)]);
+ uint32_t idx = GETFIELD(PC_VPC_CWATCH_OFFSET,
+ xive->regs[(PC_VPC_CWATCH_SPEC >> 3)]);
+ uint64_t vpc_watch[8] = { 0 };
+ int i;
+
+ if (pnv_xive_vst_read(xive, VST_TSEL_VPDT, blk, idx, vpc_watch)) {
+ xive_error(xive, "VST: no NVT entry %x/%x !?", blk, idx);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(vpc_watch); i++) {
+ xive->regs[(PC_VPC_CWATCH_DAT0 >> 3) + i] = be64_to_cpu(vpc_watch[i]);
+ }
+}
+
static int pnv_xive_get_eas(XiveRouter *xrtr, uint8_t blk, uint32_t idx,
XiveEAS *eas)
{
@@ -346,12 +390,6 @@ static int pnv_xive_get_eas(XiveRouter *xrtr, uint8_t blk, uint32_t idx,
return pnv_xive_vst_read(xive, VST_TSEL_IVT, blk, idx, eas);
}
-static int pnv_xive_eas_update(PnvXive *xive, uint8_t blk, uint32_t idx)
-{
- /* All done. */
- return 0;
-}
-
static XiveTCTX *pnv_xive_get_tctx(XiveRouter *xrtr, CPUState *cs)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -950,28 +988,43 @@ static void pnv_xive_ic_reg_write(void *opaque, hwaddr offset,
* XIVE PC & VC cache updates for EAS, NVT and END
*/
case VC_IVC_SCRUB_MASK:
- break;
case VC_IVC_SCRUB_TRIG:
- pnv_xive_eas_update(xive, GETFIELD(PC_SCRUB_BLOCK_ID, val),
- GETFIELD(VC_SCRUB_OFFSET, val));
break;
- case VC_EQC_SCRUB_MASK:
case VC_EQC_CWATCH_SPEC:
- case VC_EQC_CWATCH_DAT0 ... VC_EQC_CWATCH_DAT3:
+ val &= ~VC_EQC_CWATCH_CONFLICT; /* HW resets this bit */
+ break;
+ case VC_EQC_CWATCH_DAT1 ... VC_EQC_CWATCH_DAT3:
break;
+ case VC_EQC_CWATCH_DAT0:
+ /* writing to DATA0 triggers the cache write */
+ xive->regs[reg] = val;
+ pnv_xive_end_update(xive);
+ break;
+ case VC_EQC_SCRUB_MASK:
case VC_EQC_SCRUB_TRIG:
- pnv_xive_end_update(xive, GETFIELD(VC_SCRUB_BLOCK_ID, val),
- GETFIELD(VC_SCRUB_OFFSET, val));
+ /*
+ * The scrubbing registers flush the cache in RAM and can also
+ * invalidate.
+ */
break;
- case PC_VPC_SCRUB_MASK:
case PC_VPC_CWATCH_SPEC:
- case PC_VPC_CWATCH_DAT0 ... PC_VPC_CWATCH_DAT7:
+ val &= ~PC_VPC_CWATCH_CONFLICT; /* HW resets this bit */
+ break;
+ case PC_VPC_CWATCH_DAT1 ... PC_VPC_CWATCH_DAT7:
break;
+ case PC_VPC_CWATCH_DAT0:
+ /* writing to DATA0 triggers the cache write */
+ xive->regs[reg] = val;
+ pnv_xive_nvt_update(xive);
+ break;
+ case PC_VPC_SCRUB_MASK:
case PC_VPC_SCRUB_TRIG:
- pnv_xive_nvt_update(xive, GETFIELD(PC_SCRUB_BLOCK_ID, val),
- GETFIELD(PC_SCRUB_OFFSET, val));
+ /*
+ * The scrubbing registers flush the cache in RAM and can also
+ * invalidate.
+ */
break;
@@ -1022,15 +1075,6 @@ static uint64_t pnv_xive_ic_reg_read(void *opaque, hwaddr offset, unsigned size)
case PC_GLOBAL_CONFIG:
case PC_VPC_SCRUB_MASK:
- case PC_VPC_CWATCH_SPEC:
- case PC_VPC_CWATCH_DAT0:
- case PC_VPC_CWATCH_DAT1:
- case PC_VPC_CWATCH_DAT2:
- case PC_VPC_CWATCH_DAT3:
- case PC_VPC_CWATCH_DAT4:
- case PC_VPC_CWATCH_DAT5:
- case PC_VPC_CWATCH_DAT6:
- case PC_VPC_CWATCH_DAT7:
case VC_GLOBAL_CONFIG:
case VC_AIB_TX_ORDER_TAG2:
@@ -1043,12 +1087,6 @@ static uint64_t pnv_xive_ic_reg_read(void *opaque, hwaddr offset, unsigned size)
case VC_IRQ_CONFIG_IPI_CASC:
case VC_EQC_SCRUB_MASK:
- case VC_EQC_CWATCH_DAT0:
- case VC_EQC_CWATCH_DAT1:
- case VC_EQC_CWATCH_DAT2:
- case VC_EQC_CWATCH_DAT3:
-
- case VC_EQC_CWATCH_SPEC:
case VC_IVC_SCRUB_MASK:
case VC_SBC_CONFIG:
case VC_AT_MACRO_KILL_MASK:
@@ -1080,6 +1118,38 @@ static uint64_t pnv_xive_ic_reg_read(void *opaque, hwaddr offset, unsigned size)
/*
* XIVE PC & VC cache updates for EAS, NVT and END
*/
+ case VC_EQC_CWATCH_SPEC:
+ xive->regs[reg] = ~(VC_EQC_CWATCH_FULL | VC_EQC_CWATCH_CONFLICT);
+ val = xive->regs[reg];
+ break;
+ case VC_EQC_CWATCH_DAT0:
+ /*
+ * Load DATA registers from cache with data requested by the
+ * SPEC register
+ */
+ pnv_xive_end_cache_load(xive);
+ val = xive->regs[reg];
+ break;
+ case VC_EQC_CWATCH_DAT1 ... VC_EQC_CWATCH_DAT3:
+ val = xive->regs[reg];
+ break;
+
+ case PC_VPC_CWATCH_SPEC:
+ xive->regs[reg] = ~(PC_VPC_CWATCH_FULL | PC_VPC_CWATCH_CONFLICT);
+ val = xive->regs[reg];
+ break;
+ case PC_VPC_CWATCH_DAT0:
+ /*
+ * Load DATA registers from cache with data requested by the
+ * SPEC register
+ */
+ pnv_xive_nvt_cache_load(xive);
+ val = xive->regs[reg];
+ break;
+ case PC_VPC_CWATCH_DAT1 ... PC_VPC_CWATCH_DAT7:
+ val = xive->regs[reg];
+ break;
+
case PC_VPC_SCRUB_TRIG:
case VC_IVC_SCRUB_TRIG:
case VC_EQC_SCRUB_TRIG:
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-14 06:52:50 +0000