Commit 6ae798cb authored by Jason Gunthorpe's avatar Jason Gunthorpe
Browse files

s390: Implement __iowrite32_copy() 

It is trivial to implement an inline to do this, so provide it in the s390
headers. Like the 64 bit version it should just invoke zpci_memcpy_toio()
with the correct size.

Link: https://lore.kernel.org/r/2-v3-1893cd8b9369+1925-mlx5_arm_wc_jgg@nvidia.com


Acked-by: default avatarNiklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent 20516d6e

arch/s390/include/asm/io.h

+8 −0
Original line number Diff line number Diff line
@@ -73,6 +73,14 @@ static inline void ioport_unmap(void __iomem *p) 
#define __raw_writel	zpci_write_u32

#define __raw_writeq	zpci_write_u64



/* combine single writes by using store-block insn */

static inline void __iowrite32_copy(void __iomem *to, const void *from,

				    size_t count)

{

	zpci_memcpy_toio(to, from, count * 4);

}

#define __iowrite32_copy __iowrite32_copy



#endif /* CONFIG_PCI */



#include <asm-generic/io.h>