its_enable_defaults() is the top init function that allocates all
the requested tables (device, collection, lpi config and pending
tables), enable LPIs at distributor level and ITS level.
gicv3_enable_defaults must be called before.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
lib/arm/asm/gic-v3-its.h | 10 ++++++++++
lib/arm/gic-v3-its.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 56 insertions(+)
diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h
index 353db6f..b73736c 100644
--- a/lib/arm/asm/gic-v3-its.h
+++ b/lib/arm/asm/gic-v3-its.h
@@ -33,6 +33,7 @@
#define GICR_PROPBASER_InnerShareable \
GIC_BASER_SHAREABILITY(GICR_PROPBASER, InnerShareable)
+#define GITS_CTLR 0x0000
#define GITS_TYPER 0x0008
#define GITS_CBASER 0x0080
#define GITS_CWRITER 0x0088
@@ -46,6 +47,8 @@
#define GITS_TYPER_PTA (1UL << 19)
#define GITS_TYPER_HWCOLLCNT_SHIFT 24
+#define GITS_CTLR_ENABLE (1U << 0)
+
#define GITS_CBASER_VALID (1UL << 63)
#define GITS_CBASER_SHAREABILITY_SHIFT (10)
#define GITS_CBASER_INNER_CACHEABILITY_SHIFT (59)
@@ -151,6 +154,11 @@ struct its_typer {
bool virt_lpi;
};
+struct its_collection {
+ u64 target_address;
+ u16 col_id;
+};
+
struct its_data {
void *base;
struct its_cmd_block *cmd_base;
@@ -158,6 +166,7 @@ struct its_data {
struct its_cmd_block *cmd_readr;
struct its_baser baser[GITS_BASER_NR_REGS];
struct its_typer typer;
+ struct its_collection *collections;
u64 flags;
};
@@ -169,6 +178,7 @@ extern void its_parse_typer(void);
extern int its_parse_baser(int i, struct its_baser *baser);
extern void its_setup_baser(int i, struct its_baser *baser);
extern void enable_lpi(u32 redist);
+extern void its_enable_defaults(void);
#endif /* !__ASSEMBLY__ */
diff --git a/lib/arm/gic-v3-its.c b/lib/arm/gic-v3-its.c
index c8ffa53..ecb8f98 100644
--- a/lib/arm/gic-v3-its.c
+++ b/lib/arm/gic-v3-its.c
@@ -212,3 +212,49 @@ void enable_lpi(u32 redist)
val |= GICR_CTLR_ENABLE_LPIS;
writel(val, ptr + GICR_CTLR);
}
+
+void its_enable_defaults(void)
+{
+ unsigned int i;
+
+ its_parse_typer();
+
+ /* Allocate BASER tables (device and collection tables) */
+ for (i = 0; i < GITS_BASER_NR_REGS; i++) {
+ struct its_baser *baser = &its_data.baser[i];
+ int ret;
+
+ ret = its_parse_baser(i, baser);
+ if (ret)
+ continue;
+
+ switch (baser->type) {
+ case GITS_BASER_TYPE_DEVICE:
+ if (baser->valid)
+ continue;
+ baser->cache = GITS_BASER_nCnB;
+ its_setup_baser(i, baser);
+ break;
+ case GITS_BASER_TYPE_COLLECTION:
+ if (baser->valid)
+ continue;
+ its_setup_baser(i, baser);
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* Allocate LPI config and pending tables */
+ alloc_lpi_tables();
+
+ its_data.collections = malloc(gicv3_data.cpu_count *
+ sizeof(struct its_collection));
+
+ init_cmd_queue();
+
+ for (i = 0; i < gicv3_data.cpu_count; i++)
+ enable_lpi(i);
+
+ writel(GITS_CTLR_ENABLE, its_data.base + GITS_CTLR);
+}
--
2.5.5
--
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