diff options
| -rw-r--r-- | hw/ppc/spapr_drc.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c index 5260b5d363..605697d8bd 100644 --- a/hw/ppc/spapr_drc.c +++ b/hw/ppc/spapr_drc.c @@ -442,12 +442,17 @@ void spapr_drc_reset(sPAPRDRConnector *drc) if (drc->dev) { /* A device present at reset is ready to go, same as coldplugged */ drc->state = drck->ready_state; + /* + * Ensure that we are able to send the FDT fragment again + * via configure-connector call if the guest requests. + */ + drc->ccs_offset = drc->fdt_start_offset; + drc->ccs_depth = 0; } else { drc->state = drck->empty_state; + drc->ccs_offset = -1; + drc->ccs_depth = -1; } - - drc->ccs_offset = -1; - drc->ccs_depth = -1; } static void drc_reset(void *opaque) @@ -1071,8 +1076,14 @@ static void rtas_ibm_configure_connector(PowerPCCPU *cpu, } if ((drc->state != SPAPR_DRC_STATE_LOGICAL_UNISOLATE) - && (drc->state != SPAPR_DRC_STATE_PHYSICAL_UNISOLATE)) { - /* Need to unisolate the device before configuring */ + && (drc->state != SPAPR_DRC_STATE_PHYSICAL_UNISOLATE) + && (drc->state != SPAPR_DRC_STATE_LOGICAL_CONFIGURED) + && (drc->state != SPAPR_DRC_STATE_PHYSICAL_CONFIGURED)) { + /* + * Need to unisolate the device before configuring + * or it should already be in configured state to + * allow configure-connector be called repeatedly. + */ rc = SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE; goto out; } @@ -1108,8 +1119,13 @@ static void rtas_ibm_configure_connector(PowerPCCPU *cpu, /* done sending the device tree, move to configured state */ trace_spapr_drc_set_configured(drc_index); drc->state = drck->ready_state; - drc->ccs_offset = -1; - drc->ccs_depth = -1; + /* + * Ensure that we are able to send the FDT fragment + * again via configure-connector call if the guest requests. + */ + drc->ccs_offset = drc->fdt_start_offset; + drc->ccs_depth = 0; + fdt_offset_next = drc->fdt_start_offset; resp = SPAPR_DR_CC_RESPONSE_SUCCESS; } else { resp = SPAPR_DR_CC_RESPONSE_PREV_PARENT; |