diff options
Diffstat (limited to 'src/devices/pci_device.c')
| -rw-r--r-- | src/devices/pci_device.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/devices/pci_device.c b/src/devices/pci_device.c index a91381f0d6..806734c18b 100644 --- a/src/devices/pci_device.c +++ b/src/devices/pci_device.c @@ -686,13 +686,25 @@ unsigned int pci_scan_bridge(struct device *dev, unsigned int max) */ static void pci_level_irq(unsigned char intNum) { - unsigned intBits = inb(0x4d0) | (((unsigned) inb(0x4d1)) << 8); + unsigned short intBits = inb(0x4d0) | (((unsigned) inb(0x4d1)) << 8); + printk_spew("%s: current ints are 0x%x\n", __FUNCTION__, intBits); intBits |= (1 << intNum); + printk_spew("%s: try to set ints 0x%x\n", __FUNCTION__, intBits); + // Write new values outb((unsigned char) intBits, 0x4d0); outb((unsigned char) (intBits >> 8), 0x4d1); + + if (inb(0x4d0) != (intBits & 0xf)) { + printk_err("%s: lower order bits are wrong: want 0x%x, got 0x%x\n", + __FUNCTION__, intBits &0xf, inb(0x4d0)); + } + if (inb(0x4d1) != ((intBits >> 8) & 0xf)) { + printk_err("%s: lower order bits are wrong: want 0x%x, got 0x%x\n", + __FUNCTION__, (intBits>>8) &0xf, inb(0x4d1)); + } } |