201     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);  in bmdma_start_dma()  local
203     bm->dma_cb = dma_cb;  in bmdma_start_dma()
204     bm->cur_prd_last = 0;  in bmdma_start_dma()
205     bm->cur_prd_addr = 0;  in bmdma_start_dma()
206     bm->cur_prd_len = 0;  in bmdma_start_dma()
208     if (bm->status & BM_STATUS_DMAING) {  in bmdma_start_dma()
209         bm->dma_cb(bmdma_active_if(bm), 0);  in bmdma_start_dma()
223     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);  in bmdma_prepare_buf()  local
224     IDEState *s = bmdma_active_if(bm);  in bmdma_prepare_buf()
225     PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev);  in bmdma_prepare_buf()
236         if (bm->cur_prd_len == 0) {  in bmdma_prepare_buf()
238             if (bm->cur_prd_last ||  in bmdma_prepare_buf()
239                 (bm->cur_addr - bm->addr) >= BMDMA_PAGE_SIZE) {  in bmdma_prepare_buf()
242             pci_dma_read(pci_dev, bm->cur_addr, &prd, 8);  in bmdma_prepare_buf()
243             bm->cur_addr += 8;  in bmdma_prepare_buf()
249             bm->cur_prd_len = len;  in bmdma_prepare_buf()
250             bm->cur_prd_addr = prd.addr;  in bmdma_prepare_buf()
251             bm->cur_prd_last = (prd.size & 0x80000000);  in bmdma_prepare_buf()
253         l = bm->cur_prd_len;  in bmdma_prepare_buf()
259             sg_len = MIN(limit - s->sg.size, bm->cur_prd_len);  in bmdma_prepare_buf()
261                 qemu_sglist_add(&s->sg, bm->cur_prd_addr, sg_len);  in bmdma_prepare_buf()
264             bm->cur_prd_addr += l;  in bmdma_prepare_buf()
265             bm->cur_prd_len -= l;  in bmdma_prepare_buf()
275     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);  in bmdma_rw_buf()  local
276     IDEState *s = bmdma_active_if(bm);  in bmdma_rw_buf()
277     PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev);  in bmdma_rw_buf()
288         if (bm->cur_prd_len == 0) {  in bmdma_rw_buf()
290             if (bm->cur_prd_last ||  in bmdma_rw_buf()
291                 (bm->cur_addr - bm->addr) >= BMDMA_PAGE_SIZE)  in bmdma_rw_buf()
293             pci_dma_read(pci_dev, bm->cur_addr, &prd, 8);  in bmdma_rw_buf()
294             bm->cur_addr += 8;  in bmdma_rw_buf()
300             bm->cur_prd_len = len;  in bmdma_rw_buf()
301             bm->cur_prd_addr = prd.addr;  in bmdma_rw_buf()
302             bm->cur_prd_last = (prd.size & 0x80000000);  in bmdma_rw_buf()
304         if (l > bm->cur_prd_len)  in bmdma_rw_buf()
305             l = bm->cur_prd_len;  in bmdma_rw_buf()
308                 pci_dma_write(pci_dev, bm->cur_prd_addr,  in bmdma_rw_buf()
311                 pci_dma_read(pci_dev, bm->cur_prd_addr,  in bmdma_rw_buf()
314             bm->cur_prd_addr += l;  in bmdma_rw_buf()
315             bm->cur_prd_len -= l;  in bmdma_rw_buf()
324     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);  in bmdma_set_inactive()  local
326     bm->dma_cb = NULL;  in bmdma_set_inactive()
328         bm->status |= BM_STATUS_DMAING;  in bmdma_set_inactive()
330         bm->status &= ~BM_STATUS_DMAING;  in bmdma_set_inactive()
336     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);  in bmdma_restart_dma()  local
338     bm->cur_addr = bm->addr;  in bmdma_restart_dma()
341 static void bmdma_cancel(BMDMAState *bm)  in bmdma_cancel()  argument
343     if (bm->status & BM_STATUS_DMAING) {  in bmdma_cancel()
345         bmdma_set_inactive(&bm->dma, false);  in bmdma_cancel()
351     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);  in bmdma_reset()  local
354     bmdma_cancel(bm);  in bmdma_reset()
355     bm->cmd = 0;  in bmdma_reset()
356     bm->status = 0;  in bmdma_reset()
357     bm->addr = 0;  in bmdma_reset()
358     bm->cur_addr = 0;  in bmdma_reset()
359     bm->cur_prd_last = 0;  in bmdma_reset()
360     bm->cur_prd_addr = 0;  in bmdma_reset()
361     bm->cur_prd_len = 0;  in bmdma_reset()
366     BMDMAState *bm = opaque;  in bmdma_irq()  local
370         qemu_set_irq(bm->irq, level);  in bmdma_irq()
374     bm->status |= BM_STATUS_INT;  in bmdma_irq()
377     qemu_set_irq(bm->irq, level);  in bmdma_irq()
380 void bmdma_cmd_writeb(BMDMAState *bm, uint32_t val)  in bmdma_cmd_writeb()  argument
385     if ((val & BM_CMD_START) != (bm->cmd & BM_CMD_START)) {  in bmdma_cmd_writeb()
387             ide_cancel_dma_sync(ide_bus_active_if(bm->bus));  in bmdma_cmd_writeb()
388             bm->status &= ~BM_STATUS_DMAING;  in bmdma_cmd_writeb()
390             bm->cur_addr = bm->addr;  in bmdma_cmd_writeb()
391             if (!(bm->status & BM_STATUS_DMAING)) {  in bmdma_cmd_writeb()
392                 bm->status |= BM_STATUS_DMAING;  in bmdma_cmd_writeb()
394                 if (bm->dma_cb)  in bmdma_cmd_writeb()
395                     bm->dma_cb(bmdma_active_if(bm), 0);  in bmdma_cmd_writeb()
400     bm->cmd = val & 0x09;  in bmdma_cmd_writeb()
403 void bmdma_status_writeb(BMDMAState *bm, uint32_t val)  in bmdma_status_writeb()  argument
405     bm->status = (val & 0x60) | (bm->status & BM_STATUS_DMAING)  in bmdma_status_writeb()
406                  | (bm->status & ~val & (BM_STATUS_ERROR | BM_STATUS_INT));  in bmdma_status_writeb()
412     BMDMAState *bm = opaque;  in bmdma_addr_read()  local
416     data = (bm->addr >> (addr * 8)) & mask;  in bmdma_addr_read()
424     BMDMAState *bm = opaque;  in bmdma_addr_write()  local
429     bm->addr &= ~(mask << shift);  in bmdma_addr_write()
430     bm->addr |= ((data & mask) << shift) & ~3;  in bmdma_addr_write()
441     BMDMAState *bm = opaque;  in ide_bmdma_current_needed()  local
443     return (bm->cur_prd_len != 0);  in ide_bmdma_current_needed()
448     BMDMAState *bm = opaque;  in ide_bmdma_status_needed()  local
455     return ((bm->status & abused_bits) != 0);  in ide_bmdma_status_needed()
460     BMDMAState *bm = opaque;  in ide_bmdma_pre_save()  local
463     if (!(bm->status & BM_STATUS_DMAING) && bm->dma_cb) {  in ide_bmdma_pre_save()
464         bm->bus->error_status =  in ide_bmdma_pre_save()
465             ide_dma_cmd_to_retry(bmdma_active_if(bm)->dma_cmd);  in ide_bmdma_pre_save()
467     bm->migration_retry_unit = bm->bus->retry_unit;  in ide_bmdma_pre_save()
468     bm->migration_retry_sector_num = bm->bus->retry_sector_num;  in ide_bmdma_pre_save()
469     bm->migration_retry_nsector = bm->bus->retry_nsector;  in ide_bmdma_pre_save()
470     bm->migration_compat_status =  in ide_bmdma_pre_save()
471         (bm->status & ~abused_bits) | (bm->bus->error_status & abused_bits);  in ide_bmdma_pre_save()
476 /* This function accesses bm->bus->error_status which is loaded only after
481     BMDMAState *bm = opaque;  in ide_bmdma_post_load()  local
484     if (bm->status == 0) {  in ide_bmdma_post_load()
485         bm->status = bm->migration_compat_status & ~abused_bits;  in ide_bmdma_post_load()
486         bm->bus->error_status |= bm->migration_compat_status & abused_bits;  in ide_bmdma_post_load()
488     if (bm->bus->error_status) {  in ide_bmdma_post_load()
489         bm->bus->retry_sector_num = bm->migration_retry_sector_num;  in ide_bmdma_post_load()
490         bm->bus->retry_nsector = bm->migration_retry_nsector;  in ide_bmdma_post_load()
491         bm->bus->retry_unit = bm->migration_retry_unit;  in ide_bmdma_post_load()
600 void bmdma_init(IDEBus *bus, BMDMAState *bm, PCIIDEState *d)  in bmdma_init()  argument
602     if (bus->dma == &bm->dma) {  in bmdma_init()
606     bm->dma.ops = &bmdma_ops;  in bmdma_init()
607     bus->dma = &bm->dma;  in bmdma_init()
608     bm->irq = bus->irq;  in bmdma_init()
609     bus->irq = qemu_allocate_irq(bmdma_irq, bm, 0);  in bmdma_init()
610     bm->bus = bus;  in bmdma_init()
611     bm->pci_dev = d;  in bmdma_init()