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authorChristoph Hellwig <hch@lst.de>2018-10-13 10:26:27 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-10-16 06:00:38 +0300
commit3f9295b65ea44194252d60376036a3618d822152 (patch)
treec08aa217d9c95b10fec4d1b788360cfcfc360afb /drivers/scsi/am53c974.c
parent44b1b4d24b2d65134efeccb3cc2341c61227f0f9 (diff)
downloadlinux-3f9295b65ea44194252d60376036a3618d822152.tar.xz
scsi: esp_scsi: move dma mapping into the core code
Except for the mac_esp driver, which uses PIO or pseudo DMA, all drivers share the same dma mapping calls. Move the dma mapping into the core code using the scsi_dma_map / scsi_dma_unmap helpers, with a special identify mapping variant triggered off a new ESP_FLAG_NO_DMA_MAP flag for mac_esp. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/am53c974.c')
-rw-r--r--drivers/scsi/am53c974.c28
1 files changed, 0 insertions, 28 deletions
diff --git a/drivers/scsi/am53c974.c b/drivers/scsi/am53c974.c
index 75ac065ef49e..27c0a4a937d9 100644
--- a/drivers/scsi/am53c974.c
+++ b/drivers/scsi/am53c974.c
@@ -114,30 +114,6 @@ static void pci_esp_write32(struct esp *esp, u32 val, unsigned long reg)
return iowrite32(val, esp->regs + (reg * 4UL));
}
-static dma_addr_t pci_esp_map_single(struct esp *esp, void *buf,
- size_t sz, int dir)
-{
- return dma_map_single(esp->dev, buf, sz, dir);
-}
-
-static int pci_esp_map_sg(struct esp *esp, struct scatterlist *sg,
- int num_sg, int dir)
-{
- return dma_map_sg(esp->dev, sg, num_sg, dir);
-}
-
-static void pci_esp_unmap_single(struct esp *esp, dma_addr_t addr,
- size_t sz, int dir)
-{
- dma_unmap_single(esp->dev, addr, sz, dir);
-}
-
-static void pci_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,
- int num_sg, int dir)
-{
- dma_unmap_sg(esp->dev, sg, num_sg, dir);
-}
-
static int pci_esp_irq_pending(struct esp *esp)
{
struct pci_esp_priv *pep = pci_esp_get_priv(esp);
@@ -293,10 +269,6 @@ static u32 pci_esp_dma_length_limit(struct esp *esp, u32 dma_addr, u32 dma_len)
static const struct esp_driver_ops pci_esp_ops = {
.esp_write8 = pci_esp_write8,
.esp_read8 = pci_esp_read8,
- .map_single = pci_esp_map_single,
- .map_sg = pci_esp_map_sg,
- .unmap_single = pci_esp_unmap_single,
- .unmap_sg = pci_esp_unmap_sg,
.irq_pending = pci_esp_irq_pending,
.reset_dma = pci_esp_reset_dma,
.dma_drain = pci_esp_dma_drain,