@@ -16,6 +16,7 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/pfn.h>
#include <linux/pm_runtime.h>
#include <linux/property.h>
#include <linux/vmalloc.h>
@@ -126,7 +127,7 @@ static int cio2_fbpt_init_dummy(struct cio2_device *cio2)
* Initialize each entry to dummy_page bus base address.
*/
for (i = 0; i < CIO2_MAX_ENTRIES; i++)
- cio2->dummy_lop[i] = cio2->dummy_page_bus_addr >> PAGE_SHIFT;
+ cio2->dummy_lop[i] = PFN_DOWN(cio2->dummy_page_bus_addr);
return 0;
}
@@ -162,7 +163,7 @@ static void cio2_fbpt_entry_init_dummy(struct cio2_device *cio2,
entry[1].second_entry.last_page_available_bytes = PAGE_SIZE - 1;
for (i = 0; i < CIO2_MAX_LOPS; i++)
- entry[i].lop_page_addr = cio2->dummy_lop_bus_addr >> PAGE_SHIFT;
+ entry[i].lop_page_addr = PFN_DOWN(cio2->dummy_lop_bus_addr);
cio2_fbpt_entry_enable(cio2, entry);
}
@@ -179,8 +180,7 @@ static void cio2_fbpt_entry_init_buf(struct cio2_device *cio2,
entry[0].first_entry.first_page_offset = b->offset;
remaining = length + entry[0].first_entry.first_page_offset;
- entry[1].second_entry.num_of_pages =
- DIV_ROUND_UP(remaining, PAGE_SIZE);
+ entry[1].second_entry.num_of_pages = PFN_UP(remaining);
/*
* last_page_available_bytes has the offset of the last byte in the
* last page which is still accessible by DMA. DMA cannot access
@@ -197,7 +197,7 @@ static void cio2_fbpt_entry_init_buf(struct cio2_device *cio2,
remaining = length;
i = 0;
while (remaining > 0) {
- entry->lop_page_addr = b->lop_bus_addr[i] >> PAGE_SHIFT;
+ entry->lop_page_addr = PFN_DOWN(b->lop_bus_addr[i]);
remaining -= CIO2_MAX_ENTRIES * PAGE_SIZE;
entry++;
i++;
@@ -206,7 +206,7 @@ static void cio2_fbpt_entry_init_buf(struct cio2_device *cio2,
/*
* The first not meaningful FBPT entry should point to a valid LOP
*/
- entry->lop_page_addr = cio2->dummy_lop_bus_addr >> PAGE_SHIFT;
+ entry->lop_page_addr = PFN_DOWN(cio2->dummy_lop_bus_addr);
cio2_fbpt_entry_enable(cio2, entry);
}
@@ -472,8 +472,7 @@ static int cio2_hw_init(struct cio2_device *cio2, struct cio2_queue *q)
}
/* Enable DMA */
- writel(q->fbpt_bus_addr >> PAGE_SHIFT,
- base + CIO2_REG_CDMABA(CIO2_DMA_CHAN));
+ writel(PFN_DOWN(q->fbpt_bus_addr), base + CIO2_REG_CDMABA(CIO2_DMA_CHAN));
writel(num_buffers1 << CIO2_CDMAC0_FBPT_LEN_SHIFT |
FBPT_WIDTH << CIO2_CDMAC0_FBPT_WIDTH_SHIFT |
@@ -838,7 +837,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
struct device *dev = &cio2->pci_dev->dev;
struct cio2_buffer *b =
container_of(vb, struct cio2_buffer, vbb.vb2_buf);
- unsigned int pages = DIV_ROUND_UP(vb->planes[0].length, PAGE_SIZE);
+ unsigned int pages = PFN_UP(vb->planes[0].length);
unsigned int lops = DIV_ROUND_UP(pages + 1, CIO2_MAX_ENTRIES);
struct sg_table *sg;
struct sg_dma_page_iter sg_iter;
@@ -871,7 +870,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
for_each_sg_dma_page (sg->sgl, &sg_iter, sg->nents, 0) {
if (!pages--)
break;
- b->lop[i][j] = sg_page_iter_dma_address(&sg_iter) >> PAGE_SHIFT;
+ b->lop[i][j] = PFN_DOWN(sg_page_iter_dma_address(&sg_iter));
j++;
if (j == CIO2_MAX_ENTRIES) {
i++;
@@ -879,7 +878,7 @@ static int cio2_vb2_buf_init(struct vb2_buffer *vb)
}
}
- b->lop[i][j] = cio2->dummy_page_bus_addr >> PAGE_SHIFT;
+ b->lop[i][j] = PFN_DOWN(cio2->dummy_page_bus_addr);
return 0;
fail:
while (i--)
There are few nice macros in pfn.h, some of which we may use here. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- drivers/media/pci/intel/ipu3/ipu3-cio2.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-)