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head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c
| Show First 20 Lines • Show All 533 Lines • ▼ Show 20 Lines | bcm_sdhci_dma_intr(int ch, void *arg) | ||||
| bus_dmamap_unload(sc->sc_dma_tag, sc->sc_dma_map); | bus_dmamap_unload(sc->sc_dma_tag, sc->sc_dma_map); | ||||
| sc->dmamap_seg_count = 0; | sc->dmamap_seg_count = 0; | ||||
| sc->dmamap_seg_index = 0; | sc->dmamap_seg_index = 0; | ||||
| left = min(BCM_SDHCI_BUFFER_SIZE, | left = min(BCM_SDHCI_BUFFER_SIZE, | ||||
| slot->curcmd->data->len - slot->offset); | slot->curcmd->data->len - slot->offset); | ||||
| /* | |||||
| * If there is less than buffer size outstanding, we would not handle | |||||
| * it anymore using DMA if bcm_sdhci_will_handle_transfer() were asked. | |||||
| * Re-enable interrupts and return and let the SDHCI state machine | |||||
| * finish the job. | |||||
| */ | |||||
| if (left < BCM_SDHCI_BUFFER_SIZE) { | |||||
| /* Re-enable data interrupts. */ | |||||
| slot->intmask |= SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | | |||||
| SDHCI_INT_DATA_END; | |||||
| bcm_sdhci_write_4(slot->bus, slot, SDHCI_SIGNAL_ENABLE, | |||||
| slot->intmask); | |||||
| mtx_unlock(&slot->mtx); | |||||
| return; | |||||
| } | |||||
| /* DATA END? */ | /* DATA END? */ | ||||
| reg = bcm_sdhci_read_4(slot->bus, slot, SDHCI_INT_STATUS); | reg = bcm_sdhci_read_4(slot->bus, slot, SDHCI_INT_STATUS); | ||||
| if (reg & SDHCI_INT_DATA_END) { | if (reg & SDHCI_INT_DATA_END) { | ||||
| /* ACK for all outstanding interrupts */ | /* ACK for all outstanding interrupts */ | ||||
| bcm_sdhci_write_4(slot->bus, slot, SDHCI_INT_STATUS, reg); | bcm_sdhci_write_4(slot->bus, slot, SDHCI_INT_STATUS, reg); | ||||
| /* enable INT */ | /* enable INT */ | ||||
| ▲ Show 20 Lines • Show All 184 Lines • Show Last 20 Lines | |||||