From 6bf3072194c3353d37c0a7575dbcac77c797598c Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Wed, 23 May 2018 17:56:46 +0200
Subject: Impelement copy rects

---
 harddoomdev.c | 21 +++++++++++++++++++++
 harddoomdev.h |  2 ++
 surface.c     | 38 +++++++++++++++++++++++++++++++++++++-
 3 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/harddoomdev.c b/harddoomdev.c
index 9b327c0..38c32dd 100644
--- a/harddoomdev.c
+++ b/harddoomdev.c
@@ -43,6 +43,11 @@ void ping_sync(void __iomem *iomem)
 	send_command(iomem, HARDDOOM_CMD_PING_SYNC);
 }
 
+void set_surf_src_pt(void __iomem *iomem, dma_addr_t page_table)
+{
+	send_command(iomem, HARDDOOM_CMD_SURF_SRC_PT(page_table));
+}
+
 void set_surf_dst_pt(void __iomem *iomem, dma_addr_t page_table)
 {
 	send_command(iomem, HARDDOOM_CMD_SURF_DST_PT(page_table));
@@ -97,6 +102,22 @@ void draw_line(struct surface_data *surface_data, struct doomdev_line line)
 	send_command(iomem, HARDDOOM_CMD_DRAW_LINE);
 }
 
+void copy_rect(struct surface_data *dst_data, struct surface_data *src_data,
+		struct doomdev_copy_rect rect)
+{
+	void __iomem *iomem;
+
+	iomem = dst_data->doom_data->iomem;
+
+	set_surf_dst_pt(iomem, dst_data->page_table_dev);
+	set_surf_src_pt(iomem, src_data->page_table_dev);
+	set_surf_dims(iomem, dst_data->width, dst_data->height);
+	set_xy_a(iomem, rect.pos_dst_x, rect.pos_dst_y);
+	set_xy_b(iomem, rect.pos_src_x, rect.pos_src_y);
+
+	send_command(iomem, HARDDOOM_CMD_COPY_RECT(rect.width, rect.height));
+}
+
 uint32_t doomdev_read_stat(void __iomem *iomem, size_t stat)
 {
 	return doomdev_read(iomem, HARDDOOM_STATS(stat));
diff --git a/harddoomdev.h b/harddoomdev.h
index 05a0b72..2c956f2 100644
--- a/harddoomdev.h
+++ b/harddoomdev.h
@@ -15,5 +15,7 @@ void ping_sync(void __iomem *iomem);
 
 void draw_line(struct surface_data *surface_data, struct doomdev_line line);
 void fill_rect(struct surface_data *surface_data, struct doomdev_fill_rect rect);
+void copy_rect(struct surface_data *dst_data, struct surface_data *src_data,
+		struct doomdev_copy_rect rect);
 
 #endif
diff --git a/surface.c b/surface.c
index d37a468..ef701ea 100644
--- a/surface.c
+++ b/surface.c
@@ -17,7 +17,7 @@ long draw_lines(struct file *filp, unsigned long arg)
 	struct doomdev_surf_ioctl_draw_lines *param;
 	struct doomdev_line *lines;
 	int i;
-
+	
 	surface_data = filp->private_data;
 	param = (struct doomdev_surf_ioctl_draw_lines *) arg;
 	lines = (struct doomdev_line *) param->lines_ptr;
@@ -55,6 +55,40 @@ long fill_rects(struct file *filp, unsigned long arg)
 	return param->rects_num;
 }
 
+long copy_rects(struct file *filp, unsigned long arg)
+{
+	struct surface_data *dst_data;
+	struct surface_data *src_data;
+	struct doomdev_surf_ioctl_copy_rects *param;
+	struct doomdev_copy_rect *rects;
+	struct fd src_fds;
+	int i;
+
+	p("in copy rects\n");
+
+	dst_data = filp->private_data;
+	param = (struct doomdev_surf_ioctl_copy_rects *) arg;
+	rects = (struct doomdev_copy_rect *) param->rects_ptr;
+
+	src_fds = fdget(param->surf_src_fd);
+	src_data = src_fds.file->private_data;
+
+	if (dst_data->doom_data != src_data->doom_data) {
+		p("copying between devices");
+		return -EINVAL;
+	}
+
+	mutex_lock(&dst_data->doom_data->cmd_mutex);
+
+	for (i = 0; i < param->rects_num; i++) {
+		copy_rect(dst_data, src_data, rects[i]);
+	}
+
+	mutex_unlock(&dst_data->doom_data->cmd_mutex);
+
+	return param->rects_num;
+}
+
 long surface_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	switch (cmd) {
@@ -62,6 +96,8 @@ long surface_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		return draw_lines(filp, arg);
 	case DOOMDEV_SURF_IOCTL_FILL_RECTS:
 		return fill_rects(filp, arg);
+	case DOOMDEV_SURF_IOCTL_COPY_RECTS:
+		return copy_rects(filp, arg);
 	default:
 		return -1;
 	}
-- 
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