brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 177 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0702-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch b/target/linux/bcm27xx/patches-4.19/950-0702-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch
new file mode 100644
index 0000000000..ff7c346f5f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0702-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch
@@ -0,0 +1,177 @@
+From bc4661703d132ae1fb91d66641c64851eae44959 Mon Sep 17 00:00:00 2001
+From: Iago Toral Quiroga <itoral@igalia.com>
+Date: Tue, 3 Sep 2019 08:45:24 +0200
+Subject: [PATCH] drm/v3d: clean caches at the end of render jobs on
+ request from user space
+
+Extends the user space ioctl for CL submissions so it can include a request
+to flush the cache once the CL execution has completed. Fixes memory
+write violation messages reported by the kernel in workloads involving
+shader memory writes (SSBOs, shader images, scratch, etc) which sometimes
+also lead to GPU resets during Piglit and CTS workloads.
+
+v2: if v3d_job_init() fails we need to kfree() the job instead of
+    v3d_job_put() it (Eric Anholt).
+
+v3 (Eric Anholt):
+  - Drop _FLAG suffix from the new flag name.
+  - Add a new param so userspace can tell whether cache flushing is
+    implemented in the kernel.
+
+Signed-off-by: Iago Toral Quiroga <itoral@igalia.com>
+---
+ drivers/gpu/drm/v3d/v3d_drv.c |  3 ++
+ drivers/gpu/drm/v3d/v3d_gem.c | 54 +++++++++++++++++++++++++++++------
+ include/uapi/drm/v3d_drm.h    |  6 ++--
+ 3 files changed, 53 insertions(+), 10 deletions(-)
+
+--- a/drivers/gpu/drm/v3d/v3d_drv.c
++++ b/drivers/gpu/drm/v3d/v3d_drv.c
+@@ -117,6 +117,9 @@ static int v3d_get_param_ioctl(struct dr
+ 	case DRM_V3D_PARAM_SUPPORTS_CSD:
+ 		args->value = v3d_has_csd(v3d);
+ 		return 0;
++	case DRM_V3D_PARAM_SUPPORTS_CACHE_FLUSH:
++		args->value = 1;
++		return 0;
+ 	default:
+ 		DRM_DEBUG("Unknown parameter %d\n", args->param);
+ 		return -EINVAL;
+--- a/drivers/gpu/drm/v3d/v3d_gem.c
++++ b/drivers/gpu/drm/v3d/v3d_gem.c
+@@ -709,13 +709,16 @@ v3d_submit_cl_ioctl(struct drm_device *d
+ 	struct drm_v3d_submit_cl *args = data;
+ 	struct v3d_bin_job *bin = NULL;
+ 	struct v3d_render_job *render;
++	struct v3d_job *clean_job = NULL;
++	struct v3d_job *last_job;
+ 	struct ww_acquire_ctx acquire_ctx;
+ 	int ret = 0;
+ 
+ 	trace_v3d_submit_cl_ioctl(&v3d->drm, args->rcl_start, args->rcl_end);
+ 
+-	if (args->pad != 0) {
+-		DRM_INFO("pad must be zero: %d\n", args->pad);
++	if (args->flags != 0 &&
++	    args->flags != DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
++		DRM_INFO("invalid flags: %d\n", args->flags);
+ 		return -EINVAL;
+ 	}
+ 
+@@ -755,12 +758,31 @@ v3d_submit_cl_ioctl(struct drm_device *d
+ 		bin->render = render;
+ 	}
+ 
+-	ret = v3d_lookup_bos(dev, file_priv, &render->base,
++	if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
++		clean_job = kcalloc(1, sizeof(*clean_job), GFP_KERNEL);
++		if (!clean_job) {
++			ret = -ENOMEM;
++			goto fail;
++		}
++
++		ret = v3d_job_init(v3d, file_priv, clean_job, v3d_job_free, 0);
++		if (ret) {
++			kfree(clean_job);
++			clean_job = NULL;
++			goto fail;
++		}
++
++		last_job = clean_job;
++	} else {
++		last_job = &render->base;
++	}
++
++	ret = v3d_lookup_bos(dev, file_priv, last_job,
+ 			     args->bo_handles, args->bo_handle_count);
+ 	if (ret)
+ 		goto fail;
+ 
+-	ret = v3d_lock_bo_reservations(&render->base, &acquire_ctx);
++	ret = v3d_lock_bo_reservations(last_job, &acquire_ctx);
+ 	if (ret)
+ 		goto fail;
+ 
+@@ -772,33 +794,49 @@ v3d_submit_cl_ioctl(struct drm_device *d
+ 
+ 		ret = v3d_add_dep(&render->base,
+ 				  dma_fence_get(bin->base.done_fence));
++		if (ret)
++			goto fail_unreserve;
+ 	}
+ 
+ 	ret = v3d_push_job(v3d_priv, &render->base, V3D_RENDER);
+ 	if (ret)
+ 		goto fail_unreserve;
++
++	if (clean_job) {
++		ret = v3d_add_dep(clean_job,
++				  dma_fence_get(render->base.done_fence));
++		if (ret)
++			goto fail_unreserve;
++		ret = v3d_push_job(v3d_priv, clean_job, V3D_CACHE_CLEAN);
++		if (ret)
++			goto fail_unreserve;
++	}
+ 	mutex_unlock(&v3d->sched_lock);
+ 
+ 	v3d_attach_fences_and_unlock_reservation(file_priv,
+-						 &render->base,
++						 last_job,
+ 						 &acquire_ctx,
+ 						 args->out_sync,
+-						 render->base.done_fence);
++						 last_job->done_fence);
+ 
+ 	if (bin)
+ 		v3d_job_put(&bin->base);
+ 	v3d_job_put(&render->base);
++	if (clean_job)
++		v3d_job_put(clean_job);
+ 
+ 	return 0;
+ 
+ fail_unreserve:
+ 	mutex_unlock(&v3d->sched_lock);
+-	v3d_unlock_bo_reservations(render->base.bo,
+-				   render->base.bo_count, &acquire_ctx);
++	v3d_unlock_bo_reservations(last_job->bo,
++				   last_job->bo_count, &acquire_ctx);
+ fail:
+ 	if (bin)
+ 		v3d_job_put(&bin->base);
+ 	v3d_job_put(&render->base);
++	if (clean_job)
++		v3d_job_put(clean_job);
+ 
+ 	return ret;
+ }
+--- a/include/uapi/drm/v3d_drm.h
++++ b/include/uapi/drm/v3d_drm.h
+@@ -48,6 +48,8 @@ extern "C" {
+ #define DRM_IOCTL_V3D_SUBMIT_TFU          DRM_IOW(DRM_COMMAND_BASE + DRM_V3D_SUBMIT_TFU, struct drm_v3d_submit_tfu)
+ #define DRM_IOCTL_V3D_SUBMIT_CSD          DRM_IOW(DRM_COMMAND_BASE + DRM_V3D_SUBMIT_CSD, struct drm_v3d_submit_csd)
+ 
++#define DRM_V3D_SUBMIT_CL_FLUSH_CACHE             0x01
++
+ /**
+  * struct drm_v3d_submit_cl - ioctl argument for submitting commands to the 3D
+  * engine.
+@@ -106,8 +108,7 @@ struct drm_v3d_submit_cl {
+ 	/* Number of BO handles passed in (size is that times 4). */
+ 	__u32 bo_handle_count;
+ 
+-	/* Pad, must be zero-filled. */
+-	__u32 pad;
++	__u32 flags;
+ };
+ 
+ /**
+@@ -175,6 +176,7 @@ enum drm_v3d_param {
+ 	DRM_V3D_PARAM_V3D_CORE0_IDENT2,
+ 	DRM_V3D_PARAM_SUPPORTS_TFU,
+ 	DRM_V3D_PARAM_SUPPORTS_CSD,
++	DRM_V3D_PARAM_SUPPORTS_CACHE_FLUSH,
+ };
+ 
+ struct drm_v3d_get_param {