1PCI_IOMAP_RANGE(9)         Public Functions Provided        PCI_IOMAP_RANGE(9)
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NAME

6       pci_iomap_range - create a virtual mapping cookie for a PCI BAR
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SYNOPSIS

9       void __iomem * pci_iomap_range(struct pci_dev * dev, int bar,
10                                      unsigned long offset,
11                                      unsigned long maxlen);
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ARGUMENTS

14       dev
15           PCI device that owns the BAR
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17       bar
18           BAR number
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20       offset
21           map memory at the given offset in BAR
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23       maxlen
24           max length of the memory to map
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DESCRIPTION

27       Using this function you will get a __iomem address to your device BAR.
28       You can access it using ioread*() and iowrite*(). These functions hide
29       the details if this is a MMIO or PIO address space and will just do
30       what you expect from them in the correct way.
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32       maxlen specifies the maximum length to map. If you want to get access
33       to the complete BAR from offset to the end, pass 0 here.
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AUTHORS

36       Matthew Wilcox <matthew@wil.cx>
37           Author.
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39       Alan Cox <alan@lxorguk.ukuu.org.uk>
40           Author.
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43Kernel Hackers Manual 3.10         June 2019                PCI_IOMAP_RANGE(9)
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