cregit-Linux how code gets into the kernel

Release 4.11 arch/arm/mm/iomap.c

Directory: arch/arm/mm
/*
 *  linux/arch/arm/mm/iomap.c
 *
 * Map IO port and PCI memory spaces so that {read,write}[bwl] can
 * be used to access this memory.
 */
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/io.h>


unsigned long vga_base;

EXPORT_SYMBOL(vga_base);

#ifdef __io

void __iomem *ioport_map(unsigned long port, unsigned int nr) { return __io(port); }

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Russell King21100.00%1100.00%
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EXPORT_SYMBOL(ioport_map);
void ioport_unmap(void __iomem *addr) { }

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Russell King9100.00%1100.00%
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EXPORT_SYMBOL(ioport_unmap); #endif #ifdef CONFIG_PCI unsigned long pcibios_min_io = 0x1000; EXPORT_SYMBOL(pcibios_min_io); unsigned long pcibios_min_mem = 0x01000000; EXPORT_SYMBOL(pcibios_min_mem);
void pci_iounmap(struct pci_dev *dev, void __iomem *addr) { if ((unsigned long)addr >= VMALLOC_START && (unsigned long)addr < VMALLOC_END) iounmap(addr); }

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EXPORT_SYMBOL(pci_iounmap); #endif

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Russell King10677.37%250.00%
Rob Herring3122.63%250.00%
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Directory: arch/arm/mm
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