diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-08-18 16:38:25 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-09-25 06:20:45 +0200 |
| commit | d69d8adc5bf045e686338918292aa417c5282852 (patch) | |
| tree | 6d2597c045df96b7cb23d862dcb009c1ef98ad40 /drivers/scsi | |
| parent | 7f3bb7f53a404c883bc289eedaa5e3c6ff9e2b47 (diff) | |
53c700: convert to dma_alloc_noncoherent
Use the new non-coherent DMA API including proper ownership transfers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/53c700.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c index c59226d7e2f6..5117d90ccd9e 100644 --- a/drivers/scsi/53c700.c +++ b/drivers/scsi/53c700.c @@ -269,18 +269,25 @@ NCR_700_get_SXFER(struct scsi_device *SDp) spi_period(SDp->sdev_target)); } +static inline dma_addr_t virt_to_dma(struct NCR_700_Host_Parameters *h, void *p) +{ + return h->pScript + ((uintptr_t)p - (uintptr_t)h->script); +} + static inline void dma_sync_to_dev(struct NCR_700_Host_Parameters *h, void *addr, size_t size) { if (h->noncoherent) - dma_cache_sync(h->dev, addr, size, DMA_TO_DEVICE); + dma_sync_single_for_device(h->dev, virt_to_dma(h, addr), + size, DMA_BIDIRECTIONAL); } static inline void dma_sync_from_dev(struct NCR_700_Host_Parameters *h, void *addr, size_t size) { if (h->noncoherent) - dma_cache_sync(h->dev, addr, size, DMA_FROM_DEVICE); + dma_sync_single_for_device(h->dev, virt_to_dma(h, addr), size, + DMA_BIDIRECTIONAL); } struct Scsi_Host * @@ -300,8 +307,8 @@ NCR_700_detect(struct scsi_host_template *tpnt, memory = dma_alloc_coherent(dev, TOTAL_MEM_SIZE, &pScript, GFP_KERNEL); if (!memory) { hostdata->noncoherent = 1; - memory = dma_alloc_attrs(dev, TOTAL_MEM_SIZE, &pScript, - GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); + memory = dma_alloc_noncoherent(dev, TOTAL_MEM_SIZE, &pScript, + DMA_BIDIRECTIONAL, GFP_KERNEL); } if (!memory) { printk(KERN_ERR "53c700: Failed to allocate memory for driver, detaching\n"); @@ -414,8 +421,9 @@ NCR_700_release(struct Scsi_Host *host) (struct NCR_700_Host_Parameters *)host->hostdata[0]; if (hostdata->noncoherent) - dma_free_attrs(hostdata->dev, TOTAL_MEM_SIZE, hostdata->script, - hostdata->pScript, DMA_ATTR_NON_CONSISTENT); + dma_free_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, + hostdata->script, hostdata->pScript, + DMA_BIDIRECTIONAL); else dma_free_coherent(hostdata->dev, TOTAL_MEM_SIZE, hostdata->script, hostdata->pScript); |