static void handle_ti(ESPState *s) { uint32_t dmalen, minlen; dmalen = s->rregs[ESP_TCLO] | (s->rregs[ESP_TCMID] << 8); if (dmalen==0) { dmalen=0x10000; } s->dma_counter = dmalen; if (s->do_cmd) minlen = (dmalen < 32) ? dmalen : 32; else if (s->ti_size < 0) minlen = (dmalen < -s->ti_size) ? dmalen : -s->ti_size; else minlen = (dmalen < s->ti_size) ? dmalen : s->ti_size; DPRINTF("Transfer Information len %d\n", minlen); if (s->dma) { s->dma_left = minlen; s->rregs[ESP_RSTAT] &= ~STAT_TC; esp_do_dma(s); } else if (s->do_cmd) { DPRINTF("command len %d\n", s->cmdlen); s->ti_size = 0; s->cmdlen = 0; s->do_cmd = 0; do_cmd(s, s->cmdbuf); return; } }
static void esp_command_complete(SCSIBus *bus, int reason, uint32_t tag, uint32_t arg) { ESPState *s = DO_UPCAST(ESPState, busdev.qdev, bus->qbus.parent); if (reason == SCSI_REASON_DONE) { DPRINTF("SCSI Command complete\n"); if (s->ti_size != 0) DPRINTF("SCSI command completed unexpectedly\n"); s->ti_size = 0; s->dma_left = 0; s->async_len = 0; if (arg) DPRINTF("Command failed\n"); s->sense = arg; s->rregs[ESP_RSTAT] = STAT_ST; esp_dma_done(s); s->current_dev = NULL; } else { DPRINTF("transfer %d/%d\n", s->dma_left, s->ti_size); s->async_len = arg; s->async_buf = s->current_dev->info->get_buf(s->current_dev, 0); if (s->dma_left) { esp_do_dma(s); } else if (s->dma_counter != 0 && s->ti_size <= 0) { /* If this was the last part of a DMA transfer then the completion interrupt is deferred to here. */ esp_dma_done(s); } } }
void esp_transfer_data(SCSIRequest *req, uint32_t len) { ESPState *s = (ESPState*)req->hba_private; s->async_len = len; s->async_buf = scsiesp_req_get_buf(req); if (s->dma_left) { esp_do_dma(s); } else if (s->dma_counter != 0 && s->ti_size == 0) { /* If this was the last part of a DMA transfer then the completion interrupt is deferred to here. */ esp_dma_done(s); } }
static void esp_transfer_data(SCSIRequest *req, uint32_t len) { ESPState *s = DO_UPCAST(ESPState, busdev.qdev, req->bus->qbus.parent); trace_esp_transfer_data(s->dma_left, s->ti_size); s->async_len = len; s->async_buf = scsi_req_get_buf(req); if (s->dma_left) { esp_do_dma(s); } else if (s->dma_counter != 0 && s->ti_size <= 0) { /* If this was the last part of a DMA transfer then the completion interrupt is deferred to here. */ esp_dma_done(s); } }
static int handle_ti(ESPState *s) { uint32_t dmalen, minlen; if (s->dma && !s->dma_enabled) { s->dma_cb = handle_ti; return 1; } dmalen = s->rregs[ESP_TCLO]; dmalen |= s->rregs[ESP_TCMID] << 8; dmalen |= s->rregs[ESP_TCHI] << 16; if (dmalen == 0) { dmalen = 0x10000; } s->dma_counter = dmalen; if (s->do_cmd) minlen = (dmalen < 32) ? dmalen : 32; else if (s->ti_size < 0) minlen = (dmalen < -s->ti_size) ? dmalen : -s->ti_size; else minlen = (dmalen < s->ti_size) ? dmalen : s->ti_size; if (s->dma) { if (s->dma == 1) s->dma_left = minlen; s->dma = 2; s->rregs[ESP_RSTAT] &= ~STAT_TC; if (!esp_do_dma(s)) { s->dma_cb = handle_ti; return 0; } return 1; } else if (s->do_cmd) { s->ti_size = 0; s->cmdlen = 0; s->do_cmd = 0; do_cmd(s, s->cmdbuf); return 1; } else { // no dma s->rregs[ESP_RINTR] = INTR_BS; esp_raise_irq(s); } return 1; }
static void handle_ti(ESPState *s) { uint32_t dmalen, minlen; if (s->dma && !s->dma_enabled) { s->dma_cb = handle_ti; return; } dmalen = s->rregs[ESP_TCLO]; dmalen |= s->rregs[ESP_TCMID] << 8; dmalen |= s->rregs[ESP_TCHI] << 16; if (dmalen==0) { dmalen=0x10000; } s->dma_counter = dmalen; if (s->do_cmd) minlen = (dmalen < 32) ? dmalen : 32; else if (s->ti_size < 0) minlen = (dmalen < -s->ti_size) ? dmalen : -s->ti_size; else minlen = (dmalen < s->ti_size) ? dmalen : s->ti_size; trace_esp_handle_ti(minlen); if (s->dma) { s->dma_left = minlen; s->rregs[ESP_RSTAT] &= ~STAT_TC; esp_do_dma(s); } else if (s->do_cmd) { trace_esp_handle_ti_cmd(s->cmdlen); s->ti_size = 0; s->cmdlen = 0; s->do_cmd = 0; do_cmd(s, s->cmdbuf); return; } }