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131 lines
4.5 KiB
Diff
131 lines
4.5 KiB
Diff
From 7fe721b0e0c72de29b4cfe9b3d6aa80a64f1603d Mon Sep 17 00:00:00 2001
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From: Qiang Yu <yuq825@gmail.com>
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Date: Mon, 14 May 2018 22:17:43 +0800
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Subject: [PATCH 051/146] drm/lima: add BCAST related function
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BCAST is a hardware module to broadcast register
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read/write for PPs. It can also merge IRQs from
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different PPs into one IRQ.
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Signed-off-by: Qiang Yu <yuq825@gmail.com>
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---
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drivers/gpu/drm/lima/lima_bcast.c | 65 +++++++++++++++++++++++++++++++
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drivers/gpu/drm/lima/lima_bcast.h | 34 ++++++++++++++++
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2 files changed, 99 insertions(+)
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create mode 100644 drivers/gpu/drm/lima/lima_bcast.c
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create mode 100644 drivers/gpu/drm/lima/lima_bcast.h
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diff --git a/drivers/gpu/drm/lima/lima_bcast.c b/drivers/gpu/drm/lima/lima_bcast.c
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new file mode 100644
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index 000000000000..32012a61ea6a
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--- /dev/null
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+++ b/drivers/gpu/drm/lima/lima_bcast.c
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@@ -0,0 +1,65 @@
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+/*
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+ * Copyright (C) 2017-2018 Lima Project
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a
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+ * copy of this software and associated documentation files (the "Software"),
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+ * to deal in the Software without restriction, including without limitation
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+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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+ * and/or sell copies of the Software, and to permit persons to whom the
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+ * Software is furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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+ * OTHER DEALINGS IN THE SOFTWARE.
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+ */
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+
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+#include <linux/io.h>
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+#include <linux/device.h>
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+
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+#include "lima_device.h"
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+#include "lima_bcast.h"
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+#include "lima_regs.h"
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+
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+#define bcast_write(reg, data) writel(data, ip->iomem + LIMA_BCAST_##reg)
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+#define bcast_read(reg) readl(ip->iomem + LIMA_BCAST_##reg)
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+
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+void lima_bcast_enable(struct lima_device *dev)
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+{
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+ struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp;
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+ struct lima_ip *ip = dev->ip + lima_ip_bcast;
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+ int i, mask = 0;
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+
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+ for (i = 0; i < pipe->num_processor; i++) {
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+ struct lima_ip *pp = pipe->processor[i];
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+ mask |= 1 << (pp->id - lima_ip_pp0);
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+ }
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+
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+ bcast_write(BROADCAST_MASK, (mask << 16) | mask);
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+ bcast_write(INTERRUPT_MASK, mask);
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+}
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+
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+void lima_bcast_disable(struct lima_device *dev)
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+{
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+ struct lima_ip *ip = dev->ip + lima_ip_bcast;
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+
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+ bcast_write(BROADCAST_MASK, 0);
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+ bcast_write(INTERRUPT_MASK, 0);
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+}
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+
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+int lima_bcast_init(struct lima_ip *ip)
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+{
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+ return 0;
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+}
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+
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+void lima_bcast_fini(struct lima_ip *ip)
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+{
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+
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+}
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+
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diff --git a/drivers/gpu/drm/lima/lima_bcast.h b/drivers/gpu/drm/lima/lima_bcast.h
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new file mode 100644
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index 000000000000..abafd4f613c7
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--- /dev/null
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+++ b/drivers/gpu/drm/lima/lima_bcast.h
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@@ -0,0 +1,34 @@
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+/*
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+ * Copyright (C) 2017-2018 Lima Project
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a
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+ * copy of this software and associated documentation files (the "Software"),
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+ * to deal in the Software without restriction, including without limitation
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+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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+ * and/or sell copies of the Software, and to permit persons to whom the
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+ * Software is furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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+ * OTHER DEALINGS IN THE SOFTWARE.
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+ */
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+
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+#ifndef __LIMA_BCAST_H__
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+#define __LIMA_BCAST_H__
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+
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+struct lima_ip;
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+
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+int lima_bcast_init(struct lima_ip *ip);
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+void lima_bcast_fini(struct lima_ip *ip);
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+
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+void lima_bcast_enable(struct lima_device *dev);
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+void lima_bcast_disable(struct lima_device *dev);
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+
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+#endif
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--
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2.17.1
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