diff options
Diffstat (limited to 'hw/scsi/esp.c')
| -rw-r--r-- | hw/scsi/esp.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 630d923623..ca8b36c0c5 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -286,11 +286,8 @@ static void esp_do_dma(ESPState *s) esp_dma_done(s); } -void esp_command_complete(SCSIRequest *req, uint32_t status, - size_t resid) +static void esp_report_command_complete(ESPState *s, uint32_t status) { - ESPState *s = req->hba_private; - trace_esp_command_complete(); if (s->ti_size != 0) { trace_esp_command_complete_unexpected(); @@ -311,6 +308,23 @@ void esp_command_complete(SCSIRequest *req, uint32_t status, } } +void esp_command_complete(SCSIRequest *req, uint32_t status, + size_t resid) +{ + ESPState *s = req->hba_private; + + if (s->rregs[ESP_RSTAT] & STAT_INT) { + /* Defer handling command complete until the previous + * interrupt has been handled. + */ + trace_esp_command_complete_deferred(); + s->deferred_status = status; + s->deferred_complete = true; + return; + } + esp_report_command_complete(s, status); +} + void esp_transfer_data(SCSIRequest *req, uint32_t len) { ESPState *s = req->hba_private; @@ -422,7 +436,10 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) s->rregs[ESP_RSTAT] &= ~STAT_TC; s->rregs[ESP_RSEQ] = SEQ_CD; esp_lower_irq(s); - + if (s->deferred_complete) { + esp_report_command_complete(s, s->deferred_status); + s->deferred_complete = false; + } return old_val; case ESP_TCHI: /* Return the unique id if the value has never been written */ @@ -582,6 +599,8 @@ const VMStateDescription vmstate_esp = { VMSTATE_UINT32(ti_wptr, ESPState), VMSTATE_BUFFER(ti_buf, ESPState), VMSTATE_UINT32(status, ESPState), + VMSTATE_UINT32(deferred_status, ESPState), + VMSTATE_BOOL(deferred_complete, ESPState), VMSTATE_UINT32(dma, ESPState), VMSTATE_PARTIAL_BUFFER(cmdbuf, ESPState, 16), VMSTATE_BUFFER_START_MIDDLE_V(cmdbuf, ESPState, 16, 4), @@ -671,8 +690,8 @@ static void sysbus_esp_hard_reset(DeviceState *dev) static const VMStateDescription vmstate_sysbus_esp_scsi = { .name = "sysbusespscsi", - .version_id = 0, - .minimum_version_id = 0, + .version_id = 1, + .minimum_version_id = 1, .fields = (VMStateField[]) { VMSTATE_STRUCT(esp, SysBusESPState, 0, vmstate_esp, ESPState), VMSTATE_END_OF_LIST() |