diff options
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_ccb.h')
| -rw-r--r-- | drivers/gpu/drm/imagination/pvr_ccb.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_ccb.h b/drivers/gpu/drm/imagination/pvr_ccb.h new file mode 100644 index 000000000000..4c8aef31eeb0 --- /dev/null +++ b/drivers/gpu/drm/imagination/pvr_ccb.h @@ -0,0 +1,71 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR MIT */ +/* Copyright (c) 2023 Imagination Technologies Ltd. */ + +#ifndef PVR_CCB_H +#define PVR_CCB_H + +#include "pvr_rogue_fwif.h" + +#include <linux/mutex.h> +#include <linux/types.h> + +/* Forward declaration from pvr_device.h. */ +struct pvr_device; + +/* Forward declaration from pvr_gem.h. */ +struct pvr_fw_object; + +struct pvr_ccb { + /** @ctrl_obj: FW object representing CCB control structure. */ + struct pvr_fw_object *ctrl_obj; + /** @ccb_obj: FW object representing CCB. */ + struct pvr_fw_object *ccb_obj; + + /** @ctrl_fw_addr: FW virtual address of CCB control structure. */ + u32 ctrl_fw_addr; + /** @ccb_fw_addr: FW virtual address of CCB. */ + u32 ccb_fw_addr; + + /** @num_cmds: Number of commands in this CCB. */ + u32 num_cmds; + + /** @cmd_size: Size of each command in this CCB, in bytes. */ + u32 cmd_size; + + /** @lock: Mutex protecting @ctrl and @ccb. */ + struct mutex lock; + /** + * @ctrl: Kernel mapping of CCB control structure. @lock must be held + * when accessing. + */ + struct rogue_fwif_ccb_ctl *ctrl; + /** @ccb: Kernel mapping of CCB. @lock must be held when accessing. */ + void *ccb; +}; + +int pvr_kccb_init(struct pvr_device *pvr_dev); +void pvr_kccb_fini(struct pvr_device *pvr_dev); +int pvr_fwccb_init(struct pvr_device *pvr_dev); +void pvr_ccb_fini(struct pvr_ccb *ccb); + +void pvr_fwccb_process(struct pvr_device *pvr_dev); + +struct dma_fence *pvr_kccb_fence_alloc(void); +void pvr_kccb_fence_put(struct dma_fence *fence); +struct dma_fence * +pvr_kccb_reserve_slot(struct pvr_device *pvr_dev, struct dma_fence *f); +void pvr_kccb_release_slot(struct pvr_device *pvr_dev); +int pvr_kccb_send_cmd(struct pvr_device *pvr_dev, + struct rogue_fwif_kccb_cmd *cmd, u32 *kccb_slot); +int pvr_kccb_send_cmd_powered(struct pvr_device *pvr_dev, + struct rogue_fwif_kccb_cmd *cmd, + u32 *kccb_slot); +void pvr_kccb_send_cmd_reserved_powered(struct pvr_device *pvr_dev, + struct rogue_fwif_kccb_cmd *cmd, + u32 *kccb_slot); +int pvr_kccb_wait_for_completion(struct pvr_device *pvr_dev, u32 slot_nr, u32 timeout, + u32 *rtn_out); +bool pvr_kccb_is_idle(struct pvr_device *pvr_dev); +void pvr_kccb_wake_up_waiters(struct pvr_device *pvr_dev); + +#endif /* PVR_CCB_H */ |