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| PCI_READ_LEGACY_IO(9) | Hardware Interfaces | PCI_READ_LEGACY_IO(9) |
NAME¶
pci_read_legacy_io - read byte(s) from legacy I/O port space
SYNOPSIS¶
ssize_t pci_read_legacy_io(struct file * filp, struct kobject * kobj, struct bin_attribute * bin_attr, char * buf, loff_t off, size_t count);
ARGUMENTS¶
struct file * filp
open sysfs file
struct kobject * kobj
kobject corresponding to file to read from
struct bin_attribute * bin_attr
struct bin_attribute for this file
char * buf
buffer to store results
loff_t off
offset into legacy I/O port space
size_t count
number of bytes to read
DESCRIPTION¶
Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific callback routine (pci_legacy_read).
COPYRIGHT¶
| June 2017 | Kernel Hackers Manual 4.11 |