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hv: pirq: add static irq:vector mappings

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Since vector is x86 specific concept, we'd like to hide it from common irq APIs.
This commit
 - adds static irq:vector mappings for special interrupt such as timer
and cpu notification;
 - reserves the irq and vector at initialization;
 - removed the vector argument in pri_register_handler(), get reserved vector
   from irq_desc in common_register_handler().

Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Yan, Like
2018-08-07 15:19:56 +08:00
committed by lijinxia
parent f6e45c9b13
commit 8fda0d8c5f
5 changed files with 26 additions and 19 deletions
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33
hypervisor/arch/x86/irq.c
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@@ -14,6 +14,12 @@ static uint32_t vector_to_irq[NR_MAX_VECTOR + 1];
spurious_handler_t spurious_handler;
#define NR_STATIC_MAPPINGS (2U)
static uint32_t irq_static_mappings[NR_STATIC_MAPPINGS][2] = {
{TIMER_IRQ, VECTOR_TIMER},
{NOTIFY_IRQ, VECTOR_NOTIFY_VCPU},
};
static void init_irq_desc(void)
{
uint32_t i;
@@ -28,6 +34,15 @@ static void init_irq_desc(void)
vector_to_irq[i] = IRQ_INVALID;
}
/* init fixed mapping for specific irq and vector */
for (i = 0U; i < NR_STATIC_MAPPINGS; i++) {
uint32_t irq = irq_static_mappings[i][0];
uint32_t vr = irq_static_mappings[i][1];
irq_desc_array[irq].vector = vr;
irq_desc_array[irq].used = IRQ_ASSIGNED;
vector_to_irq[vr] = irq;
}
}
/*
@@ -155,7 +170,7 @@ static int32_t common_register_handler(uint32_t irq_arg,
struct irq_request_info *info)
{
struct irq_desc *desc;
uint32_t irq = irq_arg;
uint32_t irq = irq_arg, vector;
spinlock_rflags;
/* ======================================================
@@ -206,10 +221,11 @@ static int32_t common_register_handler(uint32_t irq_arg,
desc->irq_handler = common_handler_edge;
}
if (info->vector >= VECTOR_FIXED_START &&
info->vector <= VECTOR_FIXED_END) {
irq_desc_set_vector(irq, info->vector);
} else if (info->vector > NR_MAX_VECTOR) {
vector = desc->vector;
if (vector >= VECTOR_FIXED_START &&
vector <= VECTOR_FIXED_END) {
irq_desc_set_vector(irq, vector);
} else if (vector > NR_MAX_VECTOR) {
irq_desc_alloc_vector(irq);
}
@@ -574,7 +590,6 @@ int32_t normal_register_handler(uint32_t irq,
{
struct irq_request_info info;
info.vector = VECTOR_INVALID;
info.func = func;
info.priv_data = priv_data;
info.name = (char *)name;
@@ -589,18 +604,12 @@ int32_t normal_register_handler(uint32_t irq,
* times
*/
int32_t pri_register_handler(uint32_t irq,
uint32_t vector,
irq_action_t func,
void *priv_data,
const char *name)
{
struct irq_request_info info;
if (vector < VECTOR_FIXED_START || vector > VECTOR_FIXED_END) {
return -EINVAL;
}
info.vector = vector;
info.func = func;
info.priv_data = priv_data;
info.name = (char *)name;