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[PATCH] ipmi: enable interrupts on the BT driver

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Enable interrupts for a BT interface.  There is a specific register that
needs to be set up to enable interrupts that also must be modified to clear
the irq.

Also, don't reset the BMC on a BT interface.  That's probably not a good
idea as the BMC may be performing other important functions and a reset
should only be a last resort.  Also, that register is also used to
enable/disable interrupts to the BT; modifying it may screw up the
interrupts.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Corey Minyard 2005-05-01 08:59:11 -07:00 committed by Linus Torvalds
parent ec26d79f4f
commit 9dbf68f97d
2 changed files with 35 additions and 6 deletions
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1
drivers/char/ipmi/ipmi_bt_sm.c
View file

@ -235,7 +235,6 @@ static void reset_flags(struct si_sm_data *bt)
if (BT_STATUS & BT_B_BUSY) BT_CONTROL(BT_B_BUSY);
BT_CONTROL(BT_CLR_WR_PTR);
BT_CONTROL(BT_SMS_ATN);
BT_INTMASK_W(BT_BMC_HWRST);
#ifdef DEVELOPMENT_ONLY_NOT_FOR_PRODUCTION
if (BT_STATUS & BT_B2H_ATN) {
int i;

40
drivers/char/ipmi/ipmi_si_intf.c
View file

@ -100,6 +100,11 @@ enum si_intf_state {
/* FIXME - add watchdog stuff. */
};
/* Some BT-specific defines we need here. */
#define IPMI_BT_INTMASK_REG 2
#define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2
#define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1
enum si_type {
SI_KCS, SI_SMIC, SI_BT
};
@ -875,6 +880,17 @@ static irqreturn_t si_irq_handler(int irq, void *data, struct pt_regs *regs)
return IRQ_HANDLED;
}
static irqreturn_t si_bt_irq_handler(int irq, void *data, struct pt_regs *regs)
{
struct smi_info *smi_info = data;
/* We need to clear the IRQ flag for the BT interface. */
smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG,
IPMI_BT_INTMASK_CLEAR_IRQ_BIT
| IPMI_BT_INTMASK_ENABLE_IRQ_BIT);
return si_irq_handler(irq, data, regs);
}
static struct ipmi_smi_handlers handlers =
{
.owner = THIS_MODULE,
@ -1001,11 +1017,22 @@ static int std_irq_setup(struct smi_info *info)
if (!info->irq)
return 0;
rv = request_irq(info->irq,
si_irq_handler,
SA_INTERRUPT,
DEVICE_NAME,
info);
if (info->si_type == SI_BT) {
rv = request_irq(info->irq,
si_bt_irq_handler,
SA_INTERRUPT,
DEVICE_NAME,
info);
if (!rv)
/* Enable the interrupt in the BT interface. */
info->io.outputb(&info->io, IPMI_BT_INTMASK_REG,
IPMI_BT_INTMASK_ENABLE_IRQ_BIT);
} else
rv = request_irq(info->irq,
si_irq_handler,
SA_INTERRUPT,
DEVICE_NAME,
info);
if (rv) {
printk(KERN_WARNING
"ipmi_si: %s unable to claim interrupt %d,"
@ -1024,6 +1051,9 @@ static void std_irq_cleanup(struct smi_info *info)
if (!info->irq)
return;
if (info->si_type == SI_BT)
/* Disable the interrupt in the BT interface. */
info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0);
free_irq(info->irq, info);
}