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s390/pci: provide support for MIO instructions

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Provide support for PCI I/O instructions that work on mapped IO addresses.

Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott
2019-04-14 15:38:01 +02:00
committed by Martin Schwidefsky
parent c475f1770a
commit 71ba41c9b1
7 changed files with 294 additions and 31 deletions
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17
arch/s390/include/asm/io.h
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@@ -30,14 +30,8 @@ void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
#define ioremap_wc ioremap_nocache
#define ioremap_wt ioremap_nocache
static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
{
return (void __iomem *) offset;
}
static inline void iounmap(volatile void __iomem *addr)
{
}
void __iomem *ioremap(unsigned long offset, unsigned long size);
void iounmap(volatile void __iomem *addr);
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
@@ -57,14 +51,17 @@ static inline void ioport_unmap(void __iomem *p)
* the corresponding device and create the mapping cookie.
*/
#define pci_iomap pci_iomap
#define pci_iomap_range pci_iomap_range
#define pci_iounmap pci_iounmap
#define pci_iomap_wc pci_iomap
#define pci_iomap_wc_range pci_iomap_range
#define pci_iomap_wc pci_iomap_wc
#define pci_iomap_wc_range pci_iomap_wc_range
#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count)
#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count)
#define memset_io(dst, val, count) zpci_memset_io(dst, val, count)
#define mmiowb() zpci_barrier()
#define __raw_readb zpci_read_u8
#define __raw_readw zpci_read_u16
#define __raw_readl zpci_read_u32