Allows drivers to request the Configuration image
be loaded from dma-able continuous buffer to avoid
needless memory pressure and delays due to multiple
copies.
Signed-off-by: Nava kishore Manne <nava.kishore.manne@xxxxxxx>
---
drivers/fpga/versal-fpga.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/fpga/versal-fpga.c b/drivers/fpga/versal-fpga.c
index 3710e8f01be2..bf4fb4426417 100644
--- a/drivers/fpga/versal-fpga.c
+++ b/drivers/fpga/versal-fpga.c
@@ -19,6 +19,18 @@ static int versal_fpga_ops_write_init(struct fpga_manager *mgr,
return 0;
}
+static int versal_fpga_ops_write_sg(struct fpga_manager *mgr,
+ struct sg_table *sgt)
+{
+ dma_addr_t dma_addr;
+ int ret;
+
+ dma_addr = sg_dma_address(sgt->sgl);
+ ret = zynqmp_pm_load_pdi(PDI_SRC_DDR, dma_addr);
+
+ return ret;
+}
+
static int versal_fpga_ops_write(struct fpga_manager *mgr,
const char *buf, size_t size)
{
@@ -40,6 +52,7 @@ static int versal_fpga_ops_write(struct fpga_manager *mgr,
static const struct fpga_manager_ops versal_fpga_ops = {
.write_init = versal_fpga_ops_write_init,
.write = versal_fpga_ops_write,
+ .write_sg = versal_fpga_ops_write_sg,
};
static int versal_fpga_probe(struct platform_device *pdev)
--
2.25.1
