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scsi: introduce scsi_req_continue

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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Paolo Bonzini 2011-04-18 15:28:11 +02:00
parent 43a2b33957
commit ad3376cc55
7 changed files with 47 additions and 60 deletions
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26
hw/esp.c
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@ -253,11 +253,10 @@ static void do_busid_cmd(ESPState *s, uint8_t *buf, uint8_t busid)
s->dma_counter = 0;
if (datalen > 0) {
s->rregs[ESP_RSTAT] |= STAT_DI;
s->current_dev->info->read_data(s->current_req);
} else {
s->rregs[ESP_RSTAT] |= STAT_DO;
s->current_dev->info->write_data(s->current_req);
}
scsi_req_continue(s->current_req);
}
s->rregs[ESP_RINTR] = INTR_BS | INTR_FC;
s->rregs[ESP_RSEQ] = SEQ_CD;
@ -383,22 +382,17 @@ static void esp_do_dma(ESPState *s)
else
s->ti_size -= len;
if (s->async_len == 0) {
if (to_device) {
// ti_size is negative
s->current_dev->info->write_data(s->current_req);
} else {
s->current_dev->info->read_data(s->current_req);
/* If there is still data to be read from the device then
complete the DMA operation immediately. Otherwise defer
until the scsi layer has completed. */
if (s->dma_left == 0 && s->ti_size > 0) {
esp_dma_done(s);
}
scsi_req_continue(s->current_req);
/* If there is still data to be read from the device then
complete the DMA operation immediately. Otherwise defer
until the scsi layer has completed. */
if (to_device || s->dma_left != 0 || s->ti_size == 0) {
return;
}
} else {
/* Partially filled a scsi buffer. Complete immediately. */
esp_dma_done(s);
}
/* Partially filled a scsi buffer. Complete immediately. */
esp_dma_done(s);
}
static void esp_command_complete(SCSIRequest *req, int reason, uint32_t arg)