feat(drivers/arm/ethosn)!: multi-device support
Add support for Arm Ethos-N NPU multi-device.
The device tree parsing currently only supports one NPU device with
multiple cores. To be able to support multi-device NPU configurations
this patch adds support for having multiple NPU devices in the device
tree.
To be able to support multiple NPU devices in the SMC API, it has been
changed in an incompatible way so the API version has been bumped.
Signed-off-by: Laurent Carlier <laurent.carlier@arm.com>
Change-Id: Ide279ce949bd06e8939268b9601c267e45f3edc3
diff --git a/include/drivers/arm/ethosn.h b/include/drivers/arm/ethosn.h
index 6de2abb..9310733 100644
--- a/include/drivers/arm/ethosn.h
+++ b/include/drivers/arm/ethosn.h
@@ -38,8 +38,8 @@
#define is_ethosn_fid(_fid) (((_fid) & ETHOSN_FID_MASK) == ETHOSN_FID_VALUE)
/* Service version */
-#define ETHOSN_VERSION_MAJOR U(0)
-#define ETHOSN_VERSION_MINOR U(1)
+#define ETHOSN_VERSION_MAJOR U(1)
+#define ETHOSN_VERSION_MINOR U(0)
/* Return codes for function calls */
#define ETHOSN_SUCCESS 0
@@ -47,10 +47,10 @@
/* -2 Reserved for NOT_REQUIRED */
/* -3 Reserved for INVALID_PARAMETER */
#define ETHOSN_FAILURE -4
-#define ETHOSN_CORE_IDX_OUT_OF_RANGE -5
+#define ETHOSN_UNKNOWN_CORE_ADDRESS -5
uintptr_t ethosn_smc_handler(uint32_t smc_fid,
- u_register_t core_idx,
+ u_register_t core_addr,
u_register_t x2,
u_register_t x3,
u_register_t x4,
diff --git a/include/plat/arm/common/fconf_ethosn_getter.h b/include/plat/arm/common/fconf_ethosn_getter.h
index 0fd1f02..fcdc31f 100644
--- a/include/plat/arm/common/fconf_ethosn_getter.h
+++ b/include/plat/arm/common/fconf_ethosn_getter.h
@@ -14,7 +14,7 @@
#define hw_config__ethosn_config_getter(prop) ethosn_config.prop
#define hw_config__ethosn_core_addr_getter(idx) __extension__ ({ \
assert(idx < ethosn_config.num_cores); \
- ethosn_config.core_addr[idx]; \
+ ethosn_config.core[idx].addr; \
})
#define ETHOSN_STATUS_DISABLED U(0)
@@ -22,10 +22,13 @@
#define ETHOSN_CORE_NUM_MAX U(64)
+struct ethosn_core_t {
+ uint64_t addr;
+};
+
struct ethosn_config_t {
- uint8_t status;
uint32_t num_cores;
- uint64_t core_addr[ETHOSN_CORE_NUM_MAX];
+ struct ethosn_core_t core[ETHOSN_CORE_NUM_MAX];
};
int fconf_populate_arm_ethosn(uintptr_t config);