1 files changed, 220 insertions, 0 deletions

diff --git a/libkms/nouveau.c b/libkms/nouveau.c
new file mode 100644
index 00000000..0e24a155
--- /dev/null
+++ b/libkms/nouveau.c
@@ -0,0 +1,220 @@
+/**************************************************************************
+ *
+ * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+
+#define HAVE_STDINT_H
+#define _FILE_OFFSET_BITS 64
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "internal.h"
+
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include "xf86drm.h"
+
+#include "nouveau_drm.h"
+
+struct nouveau_bo
+{
+        struct kms_bo base;
+        uint64_t map_handle;
+        unsigned map_count;
+};
+
+static int
+nouveau_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
+{
+        switch (key) {
+        case KMS_BO_TYPE:
+                *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
+                break;
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static int
+nouveau_destroy(struct kms_driver *kms)
+{
+        free(kms);
+        return 0;
+}
+
+static int
+nouveau_bo_create(struct kms_driver *kms,
+                 const unsigned width, const unsigned height,
+                 const enum kms_bo_type type, const unsigned *attr,
+                 struct kms_bo **out)
+{
+        struct drm_nouveau_gem_new arg;
+        unsigned size, pitch;
+        struct nouveau_bo *bo;
+        int i, ret;
+
+        for (i = 0; attr[i]; i += 2) {
+                switch (attr[i]) {
+                case KMS_WIDTH:
+                case KMS_HEIGHT:
+                case KMS_BO_TYPE:
+                        break;
+                default:
+                        return -EINVAL;
+                }
+        }
+
+        bo = calloc(1, sizeof(*bo));
+        if (!bo)
+                return -ENOMEM;
+
+        if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) {
+                pitch = 64 * 4;
+                size = 64 * 64 * 4;
+        } else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) {
+                pitch = width * 4;
+                pitch = (pitch + 512 - 1) & ~(512 - 1);
+                size = pitch * height;
+        } else {
+                return -EINVAL;
+        }
+
+        memset(&arg, 0, sizeof(arg));
+        arg.info.size = size;
+        arg.info.domain = NOUVEAU_GEM_DOMAIN_MAPPABLE | NOUVEAU_GEM_DOMAIN_VRAM;
+        arg.info.tile_mode = 0;
+        arg.info.tile_flags = 0;
+        arg.align = 512;
+        arg.channel_hint = 0;
+
+        ret = drmCommandWriteRead(kms->fd, DRM_NOUVEAU_GEM_NEW, &arg, sizeof(arg));
+        if (ret)
+                goto err_free;
+
+        bo->base.kms = kms;
+        bo->base.handle = arg.info.handle;
+        bo->base.size = size;
+        bo->base.pitch = pitch;
+        bo->map_handle = arg.info.map_handle;
+
+        *out = &bo->base;
+
+        return 0;
+
+err_free:
+        free(bo);
+        return ret;
+}
+
+static int
+nouveau_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
+{
+        switch (key) {
+        default:
+                return -EINVAL;
+        }
+}
+
+static int
+nouveau_bo_map(struct kms_bo *_bo, void **out)
+{
+        struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
+        void *map = NULL;
+
+        if (bo->base.ptr) {
+                bo->map_count++;
+                *out = bo->base.ptr;
+                return 0;
+        }
+
+        map = mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, bo->map_handle);
+        if (map == MAP_FAILED)
+                return -errno;
+
+        bo->base.ptr = map;
+        bo->map_count++;
+        *out = bo->base.ptr;
+
+        return 0;
+}
+
+static int
+nouveau_bo_unmap(struct kms_bo *_bo)
+{
+        struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
+        bo->map_count--;
+        return 0;
+}
+
+static int
+nouveau_bo_destroy(struct kms_bo *_bo)
+{
+        struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
+        struct drm_gem_close arg;
+        int ret;
+
+        if (bo->base.ptr) {
+                /* XXX Sanity check map_count */
+                munmap(bo->base.ptr, bo->base.size);
+                bo->base.ptr = NULL;
+        }
+
+        memset(&arg, 0, sizeof(arg));
+        arg.handle = bo->base.handle;
+
+        ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
+        if (ret)
+                return -errno;
+
+        free(bo);
+        return 0;
+}
+
+int
+nouveau_create(int fd, struct kms_driver **out)
+{
+        struct kms_driver *kms;
+
+        kms = calloc(1, sizeof(*kms));
+        if (!kms)
+                return -ENOMEM;
+
+        kms->fd = fd;
+
+        kms->bo_create = nouveau_bo_create;
+        kms->bo_map = nouveau_bo_map;
+        kms->bo_unmap = nouveau_bo_unmap;
+        kms->bo_get_prop = nouveau_bo_get_prop;
+        kms->bo_destroy = nouveau_bo_destroy;
+        kms->get_prop = nouveau_get_prop;
+        kms->destroy = nouveau_destroy;
+        *out = kms;
+
+        return 0;
+}