Author: kib Date: Mon Jan 7 02:39:40 2019 New Revision: 342826 URL: https://svnweb.freebsd.org/changeset/base/342826
Log: Fix use of busdma(9) KPI in ahci(4). Use BUS_DMA_NOWAIT for loads at initialization time. Report actual numeric error code if any problem occurs at the initialization. Reported and tested by: pho Reviewed by: mav Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D18741 Modified: head/sys/dev/ahci/ahci.c Modified: head/sys/dev/ahci/ahci.c ============================================================================== --- head/sys/dev/ahci/ahci.c Mon Jan 7 00:32:19 2019 (r342825) +++ head/sys/dev/ahci/ahci.c Mon Jan 7 02:39:40 2019 (r342826) @@ -982,18 +982,22 @@ ahci_dmainit(device_t dev) struct ahci_channel *ch = device_get_softc(dev); struct ahci_dc_cb_args dcba; size_t rfsize; + int error; /* Command area. */ - if (bus_dma_tag_create(bus_get_dma_tag(dev), 1024, 0, + error = bus_dma_tag_create(bus_get_dma_tag(dev), 1024, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, AHCI_WORK_SIZE, 1, AHCI_WORK_SIZE, - 0, NULL, NULL, &ch->dma.work_tag)) + 0, NULL, NULL, &ch->dma.work_tag); + if (error != 0) goto error; - if (bus_dmamem_alloc(ch->dma.work_tag, (void **)&ch->dma.work, - BUS_DMA_ZERO, &ch->dma.work_map)) + error = bus_dmamem_alloc(ch->dma.work_tag, (void **)&ch->dma.work, + BUS_DMA_ZERO, &ch->dma.work_map); + if (error != 0) goto error; - if (bus_dmamap_load(ch->dma.work_tag, ch->dma.work_map, ch->dma.work, - AHCI_WORK_SIZE, ahci_dmasetupc_cb, &dcba, 0) || dcba.error) { + error = bus_dmamap_load(ch->dma.work_tag, ch->dma.work_map, ch->dma.work, + AHCI_WORK_SIZE, ahci_dmasetupc_cb, &dcba, BUS_DMA_NOWAIT); + if (error != 0 || (error = dcba.error) != 0) { bus_dmamem_free(ch->dma.work_tag, ch->dma.work, ch->dma.work_map); goto error; } @@ -1003,33 +1007,37 @@ ahci_dmainit(device_t dev) rfsize = 4096; else rfsize = 256; - if (bus_dma_tag_create(bus_get_dma_tag(dev), rfsize, 0, + error = bus_dma_tag_create(bus_get_dma_tag(dev), rfsize, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, rfsize, 1, rfsize, - 0, NULL, NULL, &ch->dma.rfis_tag)) + 0, NULL, NULL, &ch->dma.rfis_tag); + if (error != 0) goto error; - if (bus_dmamem_alloc(ch->dma.rfis_tag, (void **)&ch->dma.rfis, 0, - &ch->dma.rfis_map)) + error = bus_dmamem_alloc(ch->dma.rfis_tag, (void **)&ch->dma.rfis, 0, + &ch->dma.rfis_map); + if (error != 0) goto error; - if (bus_dmamap_load(ch->dma.rfis_tag, ch->dma.rfis_map, ch->dma.rfis, - rfsize, ahci_dmasetupc_cb, &dcba, 0) || dcba.error) { + error = bus_dmamap_load(ch->dma.rfis_tag, ch->dma.rfis_map, ch->dma.rfis, + rfsize, ahci_dmasetupc_cb, &dcba, BUS_DMA_NOWAIT); + if (error != 0 || (error = dcba.error) != 0) { bus_dmamem_free(ch->dma.rfis_tag, ch->dma.rfis, ch->dma.rfis_map); goto error; } ch->dma.rfis_bus = dcba.maddr; /* Data area. */ - if (bus_dma_tag_create(bus_get_dma_tag(dev), 2, 0, + error = bus_dma_tag_create(bus_get_dma_tag(dev), 2, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, AHCI_SG_ENTRIES * PAGE_SIZE * ch->numslots, AHCI_SG_ENTRIES, AHCI_PRD_MAX, - 0, busdma_lock_mutex, &ch->mtx, &ch->dma.data_tag)) { + 0, busdma_lock_mutex, &ch->mtx, &ch->dma.data_tag); + if (error != 0) goto error; - } return; error: - device_printf(dev, "WARNING - DMA initialization failed\n"); + device_printf(dev, "WARNING - DMA initialization failed, error %d\n", + error); ahci_dmafini(dev); } _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
