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Message type for SYS_IRQCTL

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Change-Id: Idef5a1e49aea3eea690e2a9bf046348766a8b944
This commit is contained in:
Lionel Sambuc
2014-05-21 16:44:37 +02:00
parent 30eae10274
commit b3085e334c
4 changed files with 37 additions and 25 deletions
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27
kernel/system/do_irqctl.c
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@@ -2,11 +2,11 @@
* m_type: SYS_IRQCTL
*
* The parameters for this kernel call are:
* m5_s1: IRQ_REQUEST (control operation to perform)
* m5_s2: IRQ_VECTOR (irq line that must be controlled)
* m5_i1: IRQ_POLICY (irq policy allows reenabling interrupts)
* m5_l3: IRQ_HOOK_ID (provides index to be returned on interrupt)
* ,, ,, (returns index of irq hook assigned at kernel)
* m_lsys_krn_sys_irqctl.request (control operation to perform)
* m_lsys_krn_sys_irqctl.vector (irq line that must be controlled)
* m_lsys_krn_sys_irqctl.policy (irq policy allows reenabling interrupts)
* m_lsys_krn_sys_irqctl.hook_id (provides index to be returned on interrupt)
* m_krn_lsys_sys_irqctl.hook_id (returns index of irq hook assigned at kernel)
*/
#include "kernel/kernel.h"
@@ -33,11 +33,11 @@ int do_irqctl(struct proc * caller, message * m_ptr)
struct priv *privp;
/* Hook identifiers start at 1 and end at NR_IRQ_HOOKS. */
irq_hook_id = (unsigned) m_ptr->IRQ_HOOK_ID - 1;
irq_vec = (unsigned) m_ptr->IRQ_VECTOR;
irq_hook_id = m_ptr->m_lsys_krn_sys_irqctl.hook_id - 1;
irq_vec = m_ptr->m_lsys_krn_sys_irqctl.vector;
/* See what is requested and take needed actions. */
switch(m_ptr->IRQ_REQUEST) {
switch(m_ptr->m_lsys_krn_sys_irqctl.request) {
/* Enable or disable IRQs. This is straightforward. */
case IRQ_ENABLE:
@@ -45,7 +45,7 @@ int do_irqctl(struct proc * caller, message * m_ptr)
if (irq_hook_id >= NR_IRQ_HOOKS || irq_hook_id < 0 ||
irq_hooks[irq_hook_id].proc_nr_e == NONE) return(EINVAL);
if (irq_hooks[irq_hook_id].proc_nr_e != caller->p_endpoint) return(EPERM);
if (m_ptr->IRQ_REQUEST == IRQ_ENABLE) {
if (m_ptr->m_lsys_krn_sys_irqctl.request == IRQ_ENABLE) {
enable_irq(&irq_hooks[irq_hook_id]);
}
else
@@ -85,7 +85,7 @@ int do_irqctl(struct proc * caller, message * m_ptr)
/* When setting a policy, the caller must provide an identifier that
* is returned on the notification message if a interrupt occurs.
*/
notify_id = (unsigned) m_ptr->IRQ_HOOK_ID;
notify_id = m_ptr->m_lsys_krn_sys_irqctl.hook_id;
if (notify_id > CHAR_BIT * sizeof(irq_id_t) - 1) return(EINVAL);
/* Try to find an existing mapping to override. */
@@ -111,13 +111,13 @@ int do_irqctl(struct proc * caller, message * m_ptr)
/* Install the handler. */
hook_ptr->proc_nr_e = caller->p_endpoint; /* process to notify */
hook_ptr->notify_id = notify_id; /* identifier to pass */
hook_ptr->policy = m_ptr->IRQ_POLICY; /* policy for interrupts */
hook_ptr->policy = m_ptr->m_lsys_krn_sys_irqctl.policy; /* policy for interrupts */
put_irq_handler(hook_ptr, irq_vec, generic_handler);
DEBUGBASIC(("IRQ %d handler registered by %s / %d\n",
irq_vec, caller->p_name, caller->p_endpoint));
/* Return index of the IRQ hook in use. */
m_ptr->IRQ_HOOK_ID = irq_hook_id + 1;
m_ptr->m_krn_lsys_sys_irqctl.hook_id = irq_hook_id + 1;
break;
case IRQ_RMPOLICY:
@@ -133,7 +133,7 @@ int do_irqctl(struct proc * caller, message * m_ptr)
break;
default:
r = EINVAL; /* invalid IRQ_REQUEST */
r = EINVAL; /* invalid IRQ REQUEST */
}
return(r);
}
@@ -174,4 +174,3 @@ irq_hook_t *hook;
}
#endif /* USE_IRQCTL */