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#include <stdlib.h>
#include <nvif/device.h>
static void __iomem *map = NULL;
static u64 map_page = ~0ULL;
static CAST
nv_rfb(struct nvif_device *device, u64 offset)
{
u64 page = (offset & ~(PAGE_SIZE - 1));
u64 addr = (offset & (PAGE_SIZE - 1));
if (device->info.family < NV_DEVICE_INFO_V0_TNT ||
device->info.family > NV_DEVICE_INFO_V0_MAXWELL) {
printk("unsupported chipset\n");
exit(1);
}
if (map_page != page) {
if (map)
iounmap(map);
map = ioremap(pci_resource_start(nvxx_device(device)->pdev, 1) +
page, PAGE_SIZE);
if (!map) {
printk("map failed\n");
exit(1);
}
map_page = page;
}
return *(CAST *)(map + addr);
}
#define READ(o) nv_rfb(device, (o))
#define ENABLE (NV_DEVICE_V0_DISABLE_MMIO | NV_DEVICE_V0_DISABLE_IDENTIFY)
#include "nv_rdfunc.h"
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