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5d7936b8e2
Adapt the dl->body0 object to use an object from the body pool. This greatly reduces the pressure on the TLB for IPMMU use cases, as all of the lists use a single allocation for the main body. The CLU and LUT objects pre-allocate a pool containing three bodies, allowing a userspace update before the hardware has committed a previous set of tables. Bodies are no longer 'freed' in interrupt context, but instead released back to their respective pools. This allows us to remove the garbage collector in the DLM. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* vsp1_dl.h -- R-Car VSP1 Display List
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*
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* Copyright (C) 2015 Renesas Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*/
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#ifndef __VSP1_DL_H__
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#define __VSP1_DL_H__
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#include <linux/types.h>
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struct vsp1_device;
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struct vsp1_dl_body;
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struct vsp1_dl_body_pool;
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struct vsp1_dl_list;
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struct vsp1_dl_manager;
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#define VSP1_DL_FRAME_END_COMPLETED BIT(0)
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#define VSP1_DL_FRAME_END_INTERNAL BIT(1)
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void vsp1_dlm_setup(struct vsp1_device *vsp1);
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struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1,
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unsigned int index,
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unsigned int prealloc);
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void vsp1_dlm_destroy(struct vsp1_dl_manager *dlm);
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void vsp1_dlm_reset(struct vsp1_dl_manager *dlm);
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unsigned int vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm);
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struct vsp1_dl_list *vsp1_dl_list_get(struct vsp1_dl_manager *dlm);
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void vsp1_dl_list_put(struct vsp1_dl_list *dl);
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void vsp1_dl_list_write(struct vsp1_dl_list *dl, u32 reg, u32 data);
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void vsp1_dl_list_commit(struct vsp1_dl_list *dl, bool internal);
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struct vsp1_dl_body_pool *
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vsp1_dl_body_pool_create(struct vsp1_device *vsp1, unsigned int num_bodies,
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unsigned int num_entries, size_t extra_size);
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void vsp1_dl_body_pool_destroy(struct vsp1_dl_body_pool *pool);
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struct vsp1_dl_body *vsp1_dl_body_get(struct vsp1_dl_body_pool *pool);
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void vsp1_dl_body_put(struct vsp1_dl_body *dlb);
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void vsp1_dl_body_write(struct vsp1_dl_body *dlb, u32 reg, u32 data);
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int vsp1_dl_list_add_body(struct vsp1_dl_list *dl, struct vsp1_dl_body *dlb);
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int vsp1_dl_list_add_chain(struct vsp1_dl_list *head, struct vsp1_dl_list *dl);
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#endif /* __VSP1_DL_H__ */
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