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GICv3: Allow either G1S or G0 interrupts to be configured

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Currently the GICv3 driver mandates that platform populate
both G1S and G0 interrupts. However, it is possible that a
given platform is not interested in both the groups and
just needs to specify either one of them.

This patch modifies the `gicv3_rdistif_init()` & `gicv3_distif_init()`
functions to allow either G1S or G0 interrupts to be configured.

Fixes ARM-software/tf-issues#400

Change-Id: I43572b0e08ae30bed5af9334f25d35bf439b0d2b
This commit is contained in:
Yatharth Kochar 2016-09-06 11:48:05 +01:00
parent 77b0532392
commit 6083c841d0
1 changed files with 27 additions and 17 deletions
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44
drivers/arm/gic/v3/gicv3_main.c
View file

@ -120,10 +120,12 @@ void gicv3_driver_init(const gicv3_driver_data_t *plat_driver_data)
******************************************************************************/
void gicv3_distif_init(void)
{
unsigned int bitmap = 0;
assert(driver_data);
assert(driver_data->gicd_base);
assert(driver_data->g1s_interrupt_array);
assert(driver_data->g0_interrupt_array);
assert(driver_data->g1s_interrupt_array ||
driver_data->g0_interrupt_array);
assert(IS_IN_EL3());
@ -146,21 +148,25 @@ void gicv3_distif_init(void)
gicv3_spis_configure_defaults(driver_data->gicd_base);
/* Configure the G1S SPIs */
gicv3_secure_spis_configure(driver_data->gicd_base,
if (driver_data->g1s_interrupt_array) {
gicv3_secure_spis_configure(driver_data->gicd_base,
driver_data->g1s_interrupt_num,
driver_data->g1s_interrupt_array,
INTR_GROUP1S);
bitmap |= CTLR_ENABLE_G1S_BIT;
}
/* Configure the G0 SPIs */
gicv3_secure_spis_configure(driver_data->gicd_base,
if (driver_data->g0_interrupt_array) {
gicv3_secure_spis_configure(driver_data->gicd_base,
driver_data->g0_interrupt_num,
driver_data->g0_interrupt_array,
INTR_GROUP0);
bitmap |= CTLR_ENABLE_G0_BIT;
}
/* Enable the secure SPIs now that they have been configured */
gicd_set_ctlr(driver_data->gicd_base,
CTLR_ENABLE_G1S_BIT | CTLR_ENABLE_G0_BIT,
RWP_TRUE);
gicd_set_ctlr(driver_data->gicd_base, bitmap, RWP_TRUE);
}
/*******************************************************************************
@ -177,8 +183,8 @@ void gicv3_rdistif_init(unsigned int proc_num)
assert(driver_data->rdistif_base_addrs);
assert(driver_data->gicd_base);
assert(gicd_read_ctlr(driver_data->gicd_base) & CTLR_ARE_S_BIT);
assert(driver_data->g1s_interrupt_array);
assert(driver_data->g0_interrupt_array);
assert(driver_data->g1s_interrupt_array ||
driver_data->g0_interrupt_array);
assert(IS_IN_EL3());
@ -188,16 +194,20 @@ void gicv3_rdistif_init(unsigned int proc_num)
gicv3_ppi_sgi_configure_defaults(gicr_base);
/* Configure the G1S SGIs/PPIs */
gicv3_secure_ppi_sgi_configure(gicr_base,
driver_data->g1s_interrupt_num,
driver_data->g1s_interrupt_array,
INTR_GROUP1S);
if (driver_data->g1s_interrupt_array) {
gicv3_secure_ppi_sgi_configure(gicr_base,
driver_data->g1s_interrupt_num,
driver_data->g1s_interrupt_array,
INTR_GROUP1S);
}
/* Configure the G0 SGIs/PPIs */
gicv3_secure_ppi_sgi_configure(gicr_base,
driver_data->g0_interrupt_num,
driver_data->g0_interrupt_array,
INTR_GROUP0);
if (driver_data->g0_interrupt_array) {
gicv3_secure_ppi_sgi_configure(gicr_base,
driver_data->g0_interrupt_num,
driver_data->g0_interrupt_array,
INTR_GROUP0);
}
}
/*******************************************************************************