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drivers/interrupt_controller: Expanding VT-D public API

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Adding a way to pre-install the irg/vector on an irte and a way to get
an irte based on irq/vector.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2020-12-16 22:41:48 +01:00 • committed by Anas Nashif
commit edef8e6b0d
3 changed files with 229 additions and 1 deletions
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88
drivers/interrupt_controller/intc_intel_vtd.c
View file

@ -104,6 +104,82 @@ static int vtd_ictl_remap(const struct device *dev,
return 0;
}
static int vtd_ictl_set_irte_vector(const struct device *dev,
uint8_t irte_idx,
uint16_t vector)
{
struct vtd_ictl_data *data = dev->data;
data->vectors[irte_idx] = vector;
return 0;
}
static int vtd_ictl_get_irte_by_vector(const struct device *dev,
uint16_t vector)
{
struct vtd_ictl_data *data = dev->data;
int irte_idx;
for (irte_idx = 0; irte_idx < IRTE_NUM; irte_idx++) {
if (data->vectors[irte_idx] == vector) {
return irte_idx;
}
}
return -EINVAL;
}
static uint16_t vtd_ictl_get_irte_vector(const struct device *dev,
uint8_t irte_idx)
{
struct vtd_ictl_data *data = dev->data;
return data->vectors[irte_idx];
}
static int vtd_ictl_set_irte_irq(const struct device *dev,
uint8_t irte_idx,
unsigned int irq)
{
struct vtd_ictl_data *data = dev->data;
data->irqs[irte_idx] = irq;
return 0;
}
static int vtd_ictl_get_irte_by_irq(const struct device *dev,
unsigned int irq)
{
struct vtd_ictl_data *data = dev->data;
int irte_idx;
for (irte_idx = 0; irte_idx < IRTE_NUM; irte_idx++) {
if (data->irqs[irte_idx] == irq) {
return irte_idx;
}
}
return -EINVAL;
}
static void vtd_ictl_set_irte_msi(const struct device *dev,
uint8_t irte_idx, bool msi)
{
struct vtd_ictl_data *data = dev->data;
data->msi[irte_idx] = msi;
}
static bool vtd_ictl_irte_is_msi(const struct device *dev,
uint8_t irte_idx)
{
struct vtd_ictl_data *data = dev->data;
return data->msi[irte_idx];
}
static int vtd_ictl_init(const struct device *dev)
{
struct vtd_ictl_data *data = dev->data;
@ -142,9 +218,19 @@ static const struct vtd_driver_api vtd_api = {
.allocate_entries = vtd_ictl_allocate_entries,
.remap_msi = vtd_ictl_remap_msi,
.remap = vtd_ictl_remap,
.set_irte_vector = vtd_ictl_set_irte_vector,
.get_irte_by_vector = vtd_ictl_get_irte_by_vector,
.get_irte_vector = vtd_ictl_get_irte_vector,
.set_irte_irq = vtd_ictl_set_irte_irq,
.get_irte_by_irq = vtd_ictl_get_irte_by_irq,
.set_irte_msi = vtd_ictl_set_irte_msi,
.irte_is_msi = vtd_ictl_irte_is_msi
};
static struct vtd_ictl_data vtd_ictl_data_0;
static struct vtd_ictl_data vtd_ictl_data_0 = {
.irqs = { -EINVAL },
.vectors = { -EINVAL },
};
static const struct vtd_ictl_cfg vtd_ictl_cfg_0 = {
DEVICE_MMIO_ROM_INIT(DT_DRV_INST(0)),

3
drivers/interrupt_controller/intc_intel_vtd.h
View file

@ -48,6 +48,9 @@ struct vtd_irte {
struct vtd_ictl_data {
struct vtd_irte irte[IRTE_NUM];
int irqs[IRTE_NUM];
int vectors[IRTE_NUM];
bool msi[IRTE_NUM];
int irte_num_used;
};