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pci/shpc: Move function to generic header file 

This function should be declared in generic header file so we can
utilize it.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
master
Yuval Shaia 2018-01-14 11:01:43 +02:00 committed by Michael S. Tsirkin
parent 6f0bb23072
commit 37e626ceda
2 changed files with 12 additions and 11 deletions
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13
hw/pci/shpc.c
View File

@ -1,6 +1,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "qemu/host-utils.h"
#include "qemu/range.h"
#include "qemu/error-report.h"
#include "hw/pci/shpc.h"
@ -122,16 +123,6 @@
#define SHPC_PCI_TO_IDX(pci_slot) ((pci_slot) - 1)
#define SHPC_IDX_TO_PHYSICAL(slot) ((slot) + 1)
static int roundup_pow_of_two(int x)
{
x |= (x >> 1);
x |= (x >> 2);
x |= (x >> 4);
x |= (x >> 8);
x |= (x >> 16);
return x + 1;
}
static uint16_t shpc_get_status(SHPCDevice *shpc, int slot, uint16_t msk)
{
uint8_t *status = shpc->config + SHPC_SLOT_STATUS(slot);
@ -656,7 +647,7 @@ int shpc_init(PCIDevice *d, PCIBus *sec_bus, MemoryRegion *bar,
int shpc_bar_size(PCIDevice *d)
{
return roundup_pow_of_two(SHPC_SLOT_REG(SHPC_MAX_SLOTS));
return pow2roundup32(SHPC_SLOT_REG(SHPC_MAX_SLOTS));
}
void shpc_cleanup(PCIDevice *d, MemoryRegion *bar)

10
include/qemu/host-utils.h
View File

@ -400,6 +400,16 @@ static inline uint64_t pow2ceil(uint64_t value)
return 0x8000000000000000ull >> (n - 1);
}
static inline uint32_t pow2roundup32(uint32_t x)
{
x |= (x >> 1);
x |= (x >> 2);
x |= (x >> 4);
x |= (x >> 8);
x |= (x >> 16);
return x + 1;
}
/**
* urshift - 128-bit Unsigned Right Shift.
* @plow: in/out - lower 64-bit integer.