1 files changed, 232 insertions, 0 deletions
diff --git a/src/freedreno/drm/msm_pipe.c b/src/freedreno/drm/msm_pipe.c
new file mode 100644
index 00000000000..13defc6d917
--- /dev/null
+++ b/src/freedreno/drm/msm_pipe.c
@@ -0,0 +1,232 @@
+/*
+ * Copyright (C) 2012-2018 Rob Clark <[email protected]>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Rob Clark <[email protected]>
+ */
+
+#include "util/slab.h"
+
+#include "msm_priv.h"
+
+static int query_param(struct fd_pipe *pipe, uint32_t param,
+		uint64_t *value)
+{
+	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
+	struct drm_msm_param req = {
+			.pipe = msm_pipe->pipe,
+			.param = param,
+	};
+	int ret;
+
+	ret = drmCommandWriteRead(pipe->dev->fd, DRM_MSM_GET_PARAM,
+			&req, sizeof(req));
+	if (ret)
+		return ret;
+
+	*value = req.value;
+
+	return 0;
+}
+
+static int msm_pipe_get_param(struct fd_pipe *pipe,
+		enum fd_param_id param, uint64_t *value)
+{
+	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
+	switch(param) {
+	case FD_DEVICE_ID: // XXX probably get rid of this..
+	case FD_GPU_ID:
+		*value = msm_pipe->gpu_id;
+		return 0;
+	case FD_GMEM_SIZE:
+		*value = msm_pipe->gmem;
+		return 0;
+	case FD_CHIP_ID:
+		*value = msm_pipe->chip_id;
+		return 0;
+	case FD_MAX_FREQ:
+		return query_param(pipe, MSM_PARAM_MAX_FREQ, value);
+	case FD_TIMESTAMP:
+		return query_param(pipe, MSM_PARAM_TIMESTAMP, value);
+	case FD_NR_RINGS:
+		return query_param(pipe, MSM_PARAM_NR_RINGS, value);
+	default:
+		ERROR_MSG("invalid param id: %d", param);
+		return -1;
+	}
+}
+
+static int msm_pipe_wait(struct fd_pipe *pipe, uint32_t timestamp,
+		uint64_t timeout)
+{
+	struct fd_device *dev = pipe->dev;
+	struct drm_msm_wait_fence req = {
+			.fence = timestamp,
+			.queueid = to_msm_pipe(pipe)->queue_id,
+	};
+	int ret;
+
+	get_abs_timeout(&req.timeout, timeout);
+
+	ret = drmCommandWrite(dev->fd, DRM_MSM_WAIT_FENCE, &req, sizeof(req));
+	if (ret) {
+		ERROR_MSG("wait-fence failed! %d (%s)", ret, strerror(errno));
+		return ret;
+	}
+
+	return 0;
+}
+
+static int open_submitqueue(struct fd_pipe *pipe, uint32_t prio)
+{
+	struct drm_msm_submitqueue req = {
+		.flags = 0,
+		.prio = prio,
+	};
+	uint64_t nr_rings = 1;
+	int ret;
+
+	if (fd_device_version(pipe->dev) < FD_VERSION_SUBMIT_QUEUES) {
+		to_msm_pipe(pipe)->queue_id = 0;
+		return 0;
+	}
+
+	msm_pipe_get_param(pipe, FD_NR_RINGS, &nr_rings);
+
+	req.prio = MIN2(req.prio, MAX2(nr_rings, 1) - 1);
+
+	ret = drmCommandWriteRead(pipe->dev->fd, DRM_MSM_SUBMITQUEUE_NEW,
+			&req, sizeof(req));
+	if (ret) {
+		ERROR_MSG("could not create submitqueue! %d (%s)", ret, strerror(errno));
+		return ret;
+	}
+
+	to_msm_pipe(pipe)->queue_id = req.id;
+	return 0;
+}
+
+static void close_submitqueue(struct fd_pipe *pipe, uint32_t queue_id)
+{
+	if (fd_device_version(pipe->dev) < FD_VERSION_SUBMIT_QUEUES)
+		return;
+
+	drmCommandWrite(pipe->dev->fd, DRM_MSM_SUBMITQUEUE_CLOSE,
+			&queue_id, sizeof(queue_id));
+}
+
+static void msm_pipe_destroy(struct fd_pipe *pipe)
+{
+	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
+	close_submitqueue(pipe, msm_pipe->queue_id);
+	free(msm_pipe);
+}
+
+static const struct fd_pipe_funcs sp_funcs = {
+		.ringbuffer_new_object = msm_ringbuffer_sp_new_object,
+		.submit_new = msm_submit_sp_new,
+		.get_param = msm_pipe_get_param,
+		.wait = msm_pipe_wait,
+		.destroy = msm_pipe_destroy,
+};
+
+static const struct fd_pipe_funcs legacy_funcs = {
+		.ringbuffer_new_object = msm_ringbuffer_new_object,
+		.submit_new = msm_submit_new,
+		.get_param = msm_pipe_get_param,
+		.wait = msm_pipe_wait,
+		.destroy = msm_pipe_destroy,
+};
+
+static uint64_t get_param(struct fd_pipe *pipe, uint32_t param)
+{
+	uint64_t value;
+	int ret = query_param(pipe, param, &value);
+	if (ret) {
+		ERROR_MSG("get-param failed! %d (%s)", ret, strerror(errno));
+		return 0;
+	}
+	return value;
+}
+
+static bool use_softpin(void)
+{
+	static int sp = -1;
+	if (sp < 0) {
+		const char *str = getenv("FD_MESA_DEBUG");
+		sp = str && strstr(str, "softpin");
+	}
+	return sp;
+}
+
+struct fd_pipe * msm_pipe_new(struct fd_device *dev,
+		enum fd_pipe_id id, uint32_t prio)
+{
+	static const uint32_t pipe_id[] = {
+			[FD_PIPE_3D] = MSM_PIPE_3D0,
+			[FD_PIPE_2D] = MSM_PIPE_2D0,
+	};
+	struct msm_pipe *msm_pipe = NULL;
+	struct fd_pipe *pipe = NULL;
+
+	msm_pipe = calloc(1, sizeof(*msm_pipe));
+	if (!msm_pipe) {
+		ERROR_MSG("allocation failed");
+		goto fail;
+	}
+
+	pipe = &msm_pipe->base;
+
+	// TODO once kernel changes are in place, this switch will be
+	// based on kernel version:
+	if (use_softpin()) {
+		pipe->funcs = &sp_funcs;
+	} else {
+		pipe->funcs = &legacy_funcs;
+	}
+
+	/* initialize before get_param(): */
+	pipe->dev = dev;
+	msm_pipe->pipe = pipe_id[id];
+
+	/* these params should be supported since the first version of drm/msm: */
+	msm_pipe->gpu_id = get_param(pipe, MSM_PARAM_GPU_ID);
+	msm_pipe->gmem   = get_param(pipe, MSM_PARAM_GMEM_SIZE);
+	msm_pipe->chip_id = get_param(pipe, MSM_PARAM_CHIP_ID);
+
+	if (! msm_pipe->gpu_id)
+		goto fail;
+
+	INFO_MSG("Pipe Info:");
+	INFO_MSG(" GPU-id:          %d", msm_pipe->gpu_id);
+	INFO_MSG(" Chip-id:         0x%08x", msm_pipe->chip_id);
+	INFO_MSG(" GMEM size:       0x%08x", msm_pipe->gmem);
+
+	if (open_submitqueue(pipe, prio))
+		goto fail;
+
+	return pipe;
+fail:
+	if (pipe)
+		fd_pipe_del(pipe);
+	return NULL;
+}