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s390/pci: provide ZPCI_ADDR macro

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Provide and use a ZPCI_ADDR macro as the complement of ZPCI_IDX
to get rid of some constants in the code.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2016-01-22 13:58:42 +01:00 committed by Martin Schwidefsky
parent c2e1fcf3ec
commit 9e00caaea1
2 changed files with 4 additions and 7 deletions
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1
arch/s390/include/asm/pci_io.h
View File

@ -21,6 +21,7 @@ struct zpci_iomap_entry {
extern struct zpci_iomap_entry *zpci_iomap_start;
#define ZPCI_ADDR(idx) (ZPCI_IOMAP_ADDR_BASE | ((u64) idx << 48))
#define ZPCI_IDX(addr) \
(((__force u64) addr & ZPCI_IOMAP_ADDR_IDX_MASK) >> 48)
#define ZPCI_OFFSET(addr) \

10
arch/s390/pci/pci.c
View File

@ -265,7 +265,6 @@ void __iomem *pci_iomap_range(struct pci_dev *pdev,
unsigned long max)
{
struct zpci_dev *zdev = to_zpci(pdev);
u64 addr;
int idx;
if ((bar & 7) != bar)
@ -284,8 +283,7 @@ void __iomem *pci_iomap_range(struct pci_dev *pdev,
BUG_ON(!zpci_iomap_start[idx].count);
spin_unlock(&zpci_iomap_lock);
addr = ZPCI_IOMAP_ADDR_BASE | ((u64) idx << 48);
return (void __iomem *) addr + offset;
return (void __iomem *) ZPCI_ADDR(idx) + offset;
}
EXPORT_SYMBOL(pci_iomap_range);
@ -297,9 +295,8 @@ EXPORT_SYMBOL(pci_iomap);
void pci_iounmap(struct pci_dev *pdev, void __iomem *addr)
{
unsigned int idx;
unsigned int idx = ZPCI_IDX(addr);
idx = (((__force u64) addr) & ~ZPCI_IOMAP_ADDR_BASE) >> 48;
spin_lock(&zpci_iomap_lock);
/* Detect underrun */
BUG_ON(!zpci_iomap_start[idx].count);
@ -611,8 +608,7 @@ static int zpci_setup_bus_resources(struct zpci_dev *zdev,
if (zdev->bars[i].val & 4)
flags |= IORESOURCE_MEM_64;
addr = ZPCI_IOMAP_ADDR_BASE + ((u64) entry << 48);
addr = ZPCI_ADDR(entry);
size = 1UL << zdev->bars[i].size;
res = __alloc_res(zdev, addr, size, flags);