diff options
Diffstat (limited to 'gxp-client.h')
| -rw-r--r-- | gxp-client.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/gxp-client.h b/gxp-client.h new file mode 100644 index 0000000..97ba489 --- /dev/null +++ b/gxp-client.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * GXP client structure. + * + * Copyright (C) 2022 Google LLC + */ +#ifndef __GXP_CLIENT_H__ +#define __GXP_CLIENT_H__ + +#include <linux/rwsem.h> +#include <linux/types.h> + +#include "gxp-internal.h" +#include "gxp-vd.h" + +/* Holds state belonging to a client */ +struct gxp_client { + struct gxp_dev *gxp; + + /* + * Protects all state of this client instance. + * Any operation that requires a client hold a particular wakelock must + * lock this semaphore for reading for the duration of that operation. + */ + struct rw_semaphore semaphore; + + bool has_block_wakelock; + bool has_vd_wakelock; + /* Value is one of the GXP_POWER_STATE_* values from gxp.h. */ + uint requested_power_state; + /* Value is one of the MEMORY_POWER_STATE_* values from gxp.h. */ + uint requested_memory_power_state; + + struct gxp_virtual_device *vd; + bool tpu_mbx_allocated; + struct gxp_tpu_mbx_desc mbx_desc; +}; + +/* + * Allocates and initializes a client container. + */ +struct gxp_client *gxp_client_create(struct gxp_dev *gxp); + +/* + * Frees up the client container cleaning up any wakelocks, virtual devices, or + * TPU mailboxes it holds. + */ +void gxp_client_destroy(struct gxp_client *client); + +#endif /* __GXP_CLIENT_H__ */ |