Module Name: src
Committed By: jmcneill
Date: Tue Nov 5 23:31:23 UTC 2019
Modified Files:
src/sys/arch/arm/sunxi: sunxi_drm.c
Log Message:
Reserve enough memory at boot to support the drmfb buffer plus a 4K buffer
for Xorg.
To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/sys/arch/arm/sunxi/sunxi_drm.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/arm/sunxi/sunxi_drm.c
diff -u src/sys/arch/arm/sunxi/sunxi_drm.c:1.7 src/sys/arch/arm/sunxi/sunxi_drm.c:1.8
--- src/sys/arch/arm/sunxi/sunxi_drm.c:1.7 Wed Feb 6 03:07:08 2019
+++ src/sys/arch/arm/sunxi/sunxi_drm.c Tue Nov 5 23:31:23 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: sunxi_drm.c,v 1.7 2019/02/06 03:07:08 jmcneill Exp $ */
+/* $NetBSD: sunxi_drm.c,v 1.8 2019/11/05 23:31:23 jmcneill Exp $ */
/*-
* Copyright (c) 2019 Jared D. McNeill <jmcne...@invisible.ca>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sunxi_drm.c,v 1.7 2019/02/06 03:07:08 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sunxi_drm.c,v 1.8 2019/11/05 23:31:23 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -50,6 +50,9 @@ __KERNEL_RCSID(0, "$NetBSD: sunxi_drm.c,
#include <arm/sunxi/sunxi_drm.h>
+#define SUNXI_DRM_MAX_WIDTH 3840
+#define SUNXI_DRM_MAX_HEIGHT 2160
+
static TAILQ_HEAD(, sunxi_drm_endpoint) sunxi_drm_endpoints =
TAILQ_HEAD_INITIALIZER(sunxi_drm_endpoints);
@@ -68,6 +71,7 @@ static int sunxi_drm_match(device_t, cfd
static void sunxi_drm_attach(device_t, device_t, void *);
static void sunxi_drm_init(device_t);
+static vmem_t *sunxi_drm_alloc_cma_pool(struct drm_device *, size_t);
static int sunxi_drm_set_busid(struct drm_device *, struct drm_master *);
@@ -176,6 +180,25 @@ sunxi_drm_init(device_t dev)
driver->date, sc->sc_ddev->primary->index);
}
+static vmem_t *
+sunxi_drm_alloc_cma_pool(struct drm_device *ddev, size_t cma_size)
+{
+ struct sunxi_drm_softc * const sc = sunxi_drm_private(ddev);
+ bus_dma_segment_t segs[1];
+ int nsegs;
+ int error;
+
+ error = bus_dmamem_alloc(sc->sc_dmat, cma_size, PAGE_SIZE, 0,
+ segs, 1, &nsegs, BUS_DMA_NOWAIT);
+ if (error) {
+ aprint_error_dev(sc->sc_dev, "couldn't allocate CMA pool\n");
+ return NULL;
+ }
+
+ return vmem_create("sunxidrm", segs[0].ds_addr, segs[0].ds_len,
+ PAGE_SIZE, NULL, NULL, NULL, 0, VM_SLEEP, IPL_NONE);
+}
+
static int
sunxi_drm_set_busid(struct drm_device *ddev, struct drm_master *master)
{
@@ -280,6 +303,7 @@ sunxi_drm_fb_probe(struct drm_fb_helper
struct sunxi_drm_framebuffer *sfb = to_sunxi_drm_framebuffer(helper->fb);
struct drm_framebuffer *fb = helper->fb;
struct sunxi_drmfb_attach_args sfa;
+ size_t cma_size;
int error;
const u_int width = sizes->surface_width;
@@ -288,6 +312,15 @@ sunxi_drm_fb_probe(struct drm_fb_helper
const size_t size = roundup(height * pitch, PAGE_SIZE);
+ /* Reserve enough memory for the FB console plus a 4K plane, rounded to 1MB */
+ cma_size = size;
+ cma_size += (SUNXI_DRM_MAX_WIDTH * SUNXI_DRM_MAX_HEIGHT * 4);
+ cma_size = roundup(cma_size, 1024 * 1024);
+ sc->sc_ddev->cma_pool = sunxi_drm_alloc_cma_pool(sc->sc_ddev, cma_size);
+ if (sc->sc_ddev->cma_pool != NULL)
+ aprint_normal_dev(sc->sc_dev, "reserved %u MB DRAM for CMA\n",
+ (u_int)(cma_size / (1024 * 1024)));
+
sfb->obj = drm_gem_cma_create(ddev, size);
if (sfb->obj == NULL) {
DRM_ERROR("failed to allocate memory for framebuffer\n");
@@ -340,8 +373,8 @@ sunxi_drm_load(struct drm_device *ddev,
drm_mode_config_init(ddev);
ddev->mode_config.min_width = 0;
ddev->mode_config.min_height = 0;
- ddev->mode_config.max_width = 3840;
- ddev->mode_config.max_height = 2160;
+ ddev->mode_config.max_width = SUNXI_DRM_MAX_WIDTH;
+ ddev->mode_config.max_height = SUNXI_DRM_MAX_HEIGHT;
ddev->mode_config.funcs = &sunxi_drm_mode_config_funcs;
num_crtc = 0;
