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s390: Implement __iowrite32_copy()

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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: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Jason Gunthorpe 2024-04-11 13:46:15 -03:00
parent 20516d6e51
commit 6ae798cbef
1 changed files with 8 additions and 0 deletions
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8
arch/s390/include/asm/io.h
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@ -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>