table of contents
| 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¶
filp
open sysfs file
kobj
kobject corresponding to file to read from
bin_attr
struct bin_attribute for this file
buf
buffer to store results
off
offset into legacy I/O port space
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¶
| May 2024 | Kernel Hackers Manual 2.6. |