diff options
Diffstat (limited to 'drivers/scsi/in2000.c')
| -rw-r--r-- | drivers/scsi/in2000.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/scsi/in2000.c b/drivers/scsi/in2000.c index 34daa3e068de..9c519876f8a0 100644 --- a/drivers/scsi/in2000.c +++ b/drivers/scsi/in2000.c @@ -1898,6 +1898,21 @@ static int int_tab[] in2000__INITDATA = { 10 }; +static int probe_bios(u32 addr, u32 *s1, uchar *switches) +{ + void __iomem *p = ioremap(addr, 0x34); + if (!p) + return 0; + *s1 = readl(p + 0x10); + if (*s1 == 0x41564f4e || readl(p + 0x30) == 0x61776c41) { + /* Read the switch image that's mapped into EPROM space */ + *switches = ~readb(p + 0x20); + iounmap(p); + return 1; + } + iounmap(p); + return 0; +} static int __init in2000_detect(struct scsi_host_template * tpnt) { @@ -1930,6 +1945,7 @@ static int __init in2000_detect(struct scsi_host_template * tpnt) detect_count = 0; for (bios = 0; bios_tab[bios]; bios++) { + u32 s1 = 0; if (check_setup_args("ioport", &val, buf)) { base = val; switches = ~inb(base + IO_SWITCHES) & 0xff; @@ -1941,13 +1957,9 @@ static int __init in2000_detect(struct scsi_host_template * tpnt) * for the obvious ID strings. We look for the 2 most common ones and * hope that they cover all the cases... */ - else if (isa_readl(bios_tab[bios] + 0x10) == 0x41564f4e || isa_readl(bios_tab[bios] + 0x30) == 0x61776c41) { + else if (probe_bios(bios_tab[bios], &s1, &switches)) { printk("Found IN2000 BIOS at 0x%x ", (unsigned int) bios_tab[bios]); -/* Read the switch image that's mapped into EPROM space */ - - switches = ~((isa_readb(bios_tab[bios] + 0x20) & 0xff)); - /* Find out where the IO space is */ x = switches & (SW_ADDR0 | SW_ADDR1); @@ -2037,7 +2049,7 @@ static int __init in2000_detect(struct scsi_host_template * tpnt) /* Older BIOS's had a 'sync on/off' switch - use its setting */ - if (isa_readl(bios_tab[bios] + 0x10) == 0x41564f4e && (switches & SW_SYNC_DOS5)) + if (s1 == 0x41564f4e && (switches & SW_SYNC_DOS5)) hostdata->sync_off = 0x00; /* sync defaults to on */ else hostdata->sync_off = 0xff; /* sync defaults to off */ |