auxio.c
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上传日期:2013-04-10
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文件大小:1k
- /* auxio.c: Probing for the Sparc AUXIO register at boot time.
- *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- */
- #include <linux/config.h>
- #include <linux/stddef.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/smp.h>
- #include <linux/init.h>
- #include <linux/delay.h>
- #include <linux/ioport.h>
- #include <asm/oplib.h>
- #include <asm/io.h>
- #include <asm/auxio.h>
- #include <asm/sbus.h>
- #include <asm/ebus.h>
- #include <asm/fhc.h>
- #include <asm/spitfire.h>
- #include <asm/starfire.h>
- /* Probe and map in the Auxiliary I/O register */
- unsigned long auxio_register = 0;
- void __init auxio_probe(void)
- {
- struct sbus_bus *sbus;
- struct sbus_dev *sdev = 0;
- for_each_sbus(sbus) {
- for_each_sbusdev(sdev, sbus) {
- if(!strcmp(sdev->prom_name, "auxio"))
- goto found_sdev;
- }
- }
- found_sdev:
- if (!sdev) {
- #ifdef CONFIG_PCI
- struct linux_ebus *ebus;
- struct linux_ebus_device *edev = 0;
- unsigned long led_auxio;
- for_each_ebus(ebus) {
- for_each_ebusdev(edev, ebus) {
- if (!strcmp(edev->prom_name, "auxio"))
- goto ebus_done;
- }
- }
- ebus_done:
- if (edev) {
- led_auxio = edev->resource[0].start;
- outl(0x01, led_auxio);
- return;
- }
- #endif
- auxio_register = 0UL;
- return;
- }
- /* Map the register both read and write */
- auxio_register = sbus_ioremap(&sdev->resource[0], 0,
- sdev->reg_addrs[0].reg_size, "auxiliaryIO");
- TURN_ON_LED;
- }