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| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-01-30 13:33:14 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:33:14 +0100 |
| commit | 466eed22d127a1f16e1251cdc54a9f8f944140c0 (patch) | |
| tree | f9b85efa895f3e2dd7f112a4aded5b2ae0bd0ca2 /arch/x86/kernel/i8253.c | |
| parent | x86: fix singlestep handling in reenter_kprobe (diff) | |
| download | linux-466eed22d127a1f16e1251cdc54a9f8f944140c0.tar.xz linux-466eed22d127a1f16e1251cdc54a9f8f944140c0.zip | |
x86: isolate PIC/PIT in/out calls
Rather than remove and/or mangle inb_p/outb_p we want to remove the use
of them from inappropriate places. For the PIC/PIT this may eventually
depend on 32/64bitism or similar so start by adding inb/outb_pit and
inb/outb_pic so that we can make them use any scheme we settle on without
disturbing the existing, correct (for ISA), port 0x80 usage. (eg we can
make inb_pit use udelay without messing up inb_p).
Floppy already does this for the fdc. That really only leaves the CMOS as
a core logic item to tackle, and bits of parallel port handling in the
chipset layers.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/i8253.c')
| -rw-r--r-- | arch/x86/kernel/i8253.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/x86/kernel/i8253.c b/arch/x86/kernel/i8253.c index c76fef1ce355..ef62b07b2b48 100644 --- a/arch/x86/kernel/i8253.c +++ b/arch/x86/kernel/i8253.c @@ -43,26 +43,26 @@ static void init_pit_timer(enum clock_event_mode mode, switch(mode) { case CLOCK_EVT_MODE_PERIODIC: /* binary, mode 2, LSB/MSB, ch 0 */ - outb_p(0x34, PIT_MODE); - outb_p(LATCH & 0xff , PIT_CH0); /* LSB */ - outb(LATCH >> 8 , PIT_CH0); /* MSB */ + outb_pit(0x34, PIT_MODE); + outb_pit(LATCH & 0xff , PIT_CH0); /* LSB */ + outb_pit(LATCH >> 8 , PIT_CH0); /* MSB */ break; case CLOCK_EVT_MODE_SHUTDOWN: case CLOCK_EVT_MODE_UNUSED: if (evt->mode == CLOCK_EVT_MODE_PERIODIC || evt->mode == CLOCK_EVT_MODE_ONESHOT) { - outb_p(0x30, PIT_MODE); - outb_p(0, PIT_CH0); - outb_p(0, PIT_CH0); + outb_pit(0x30, PIT_MODE); + outb_pit(0, PIT_CH0); + outb_pit(0, PIT_CH0); } pit_disable_clocksource(); break; case CLOCK_EVT_MODE_ONESHOT: /* One shot setup */ - outb_p(0x38, PIT_MODE); pit_disable_clocksource(); + outb_pit(0x38, PIT_MODE); break; case CLOCK_EVT_MODE_RESUME: @@ -80,8 +80,8 @@ static void init_pit_timer(enum clock_event_mode mode, static int pit_next_event(unsigned long delta, struct clock_event_device *evt) { spin_lock(&i8253_lock); - outb_p(delta & 0xff , PIT_CH0); /* LSB */ - outb(delta >> 8 , PIT_CH0); /* MSB */ + outb_pit(delta & 0xff , PIT_CH0); /* LSB */ + outb_pit(delta >> 8 , PIT_CH0); /* MSB */ spin_unlock(&i8253_lock); return 0; @@ -153,15 +153,15 @@ static cycle_t pit_read(void) * count), it cannot be newer. */ jifs = jiffies; - outb_p(0x00, PIT_MODE); /* latch the count ASAP */ - count = inb_p(PIT_CH0); /* read the latched count */ - count |= inb_p(PIT_CH0) << 8; + outb_pit(0x00, PIT_MODE); /* latch the count ASAP */ + count = inb_pit(PIT_CH0); /* read the latched count */ + count |= inb_pit(PIT_CH0) << 8; /* VIA686a test code... reset the latch if count > max + 1 */ if (count > LATCH) { - outb_p(0x34, PIT_MODE); - outb_p(LATCH & 0xff, PIT_CH0); - outb(LATCH >> 8, PIT_CH0); + outb_pit(0x34, PIT_MODE); + outb_pit(LATCH & 0xff, PIT_CH0); + outb_pit(LATCH >> 8, PIT_CH0); count = LATCH - 1; } |