libkms/radeon: Add backend

Todo: What tiling should be set on scanout buffers?

Haven't tested besides compiling it.

diff --git a/libkms/Makefile.am b/libkms/Makefile.am
index 2c75878..5c2e63f 100644 (file)
--- a/libkms/Makefile.am
+++ b/libkms/Makefile.am
@@ -26,6 +26,10 @@ if HAVE_NOUVEAU
 libkms_la_SOURCES += nouveau.c
 endif
 
+if HAVE_RADEON
+libkms_la_SOURCES += radeon.c
+endif
+
 libkmsincludedir = ${includedir}/libkms
 libkmsinclude_HEADERS = libkms.h
 

diff --git a/libkms/internal.h b/libkms/internal.h
index 63122d1..51f5e65 100644 (file)
--- a/libkms/internal.h
+++ b/libkms/internal.h
@@ -70,4 +70,6 @@ int intel_create(int fd, struct kms_driver **out);
 
 int nouveau_create(int fd, struct kms_driver **out);
 
+int radeon_create(int fd, struct kms_driver **out);
+
 #endif

diff --git a/libkms/linux.c b/libkms/linux.c
index 02182d3..7449abc 100644 (file)
--- a/libkms/linux.c
+++ b/libkms/linux.c
@@ -111,6 +111,10 @@ linux_from_sysfs(int fd, struct kms_driver **out)
        else if (!strcmp(name, "nouveau"))
                ret = nouveau_create(fd, out);
 #endif
+#ifdef HAVE_RADEON
+       else if (!strcmp(name, "radeon"))
+               ret = radeon_create(fd, out);
+#endif
        else
                ret = -ENOSYS;
 

diff --git a/libkms/radeon.c b/libkms/radeon.c
new file mode 100644 (file)
index 0000000..f5e382a
--- /dev/null
+++ b/libkms/radeon.c
@@ -0,0 +1,242 @@
+/**************************************************************************
+ *
+ * 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 "radeon_drm.h"
+
+
+#define ALIGNMENT 512
+
+struct radeon_bo
+{
+       struct kms_bo base;
+       unsigned map_count;
+};
+
+static int
+radeon_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
+radeon_destroy(struct kms_driver *kms)
+{
+       free(kms);
+       return 0;
+}
+
+static int
+radeon_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_radeon_gem_create arg;
+       unsigned size, pitch;
+       struct radeon_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;
+               }
+       }
+
+       switch (type) {
+       case KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8:
+               pitch = 4 * 64;
+               size  = 4 * 64 * 64;
+               break;
+       case KMS_BO_TYPE_SCANOUT_X8R8G8B8:
+               pitch = width * 4;
+               pitch = (pitch + ALIGNMENT - 1) & ~(ALIGNMENT - 1);
+               size  = pitch * height;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       bo = calloc(1, sizeof(*bo));
+       if (!bo)
+               return -ENOMEM;
+
+       memset(&arg, 0, sizeof(arg));
+       arg.size = size;
+       arg.alignment = ALIGNMENT;
+       arg.initial_domain = RADEON_GEM_DOMAIN_CPU;
+       arg.flags = 0;
+       arg.handle = 0;
+
+       ret = drmCommandWriteRead(kms->fd, DRM_RADEON_GEM_CREATE,
+                                 &arg, sizeof(arg));
+       if (ret)
+               goto err_free;
+
+       bo->base.kms = kms;
+       bo->base.handle = arg.handle;
+       bo->base.size = size;
+       bo->base.pitch = pitch;
+       bo->base.offset = 0;
+       bo->map_count = 0;
+
+       *out = &bo->base;
+
+       return 0;
+
+err_free:
+       free(bo);
+       return ret;
+}
+
+static int
+radeon_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
+{
+       switch (key) {
+       default:
+               return -EINVAL;
+       }
+}
+
+static int
+radeon_bo_map(struct kms_bo *_bo, void **out)
+{
+       struct radeon_bo *bo = (struct radeon_bo *)_bo;
+       struct drm_radeon_gem_mmap arg;
+       void *map = NULL;
+       int ret;
+
+       if (bo->base.ptr) {
+               bo->map_count++;
+               *out = bo->base.ptr;
+               return 0;
+       }
+
+       memset(&arg, 0, sizeof(arg));
+       arg.handle = bo->base.handle;
+       arg.offset = bo->base.offset;
+       arg.size = (uint64_t)bo->base.size;
+
+       ret = drmCommandWriteRead(bo->base.kms->fd, DRM_RADEON_GEM_MMAP,
+                               &arg, sizeof(arg));
+       if (ret)
+               return -errno;
+
+       map = mmap(0, arg.size, PROT_READ | PROT_WRITE, MAP_SHARED,
+                  bo->base.kms->fd, arg.addr_ptr);
+       if (map == MAP_FAILED)
+               return -errno;
+
+       bo->base.ptr = map;
+       bo->map_count++;
+       *out = bo->base.ptr;
+
+       return 0;
+}
+
+static int
+radeon_bo_unmap(struct kms_bo *_bo)
+{
+       struct radeon_bo *bo = (struct radeon_bo *)_bo;
+       if (--bo->map_count == 0) {
+               munmap(bo->base.ptr, bo->base.size);
+               bo->base.ptr = NULL;
+       }
+       return 0;
+}
+
+static int
+radeon_bo_destroy(struct kms_bo *_bo)
+{
+       struct radeon_bo *bo = (struct radeon_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
+radeon_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 = radeon_bo_create;
+       kms->bo_map = radeon_bo_map;
+       kms->bo_unmap = radeon_bo_unmap;
+       kms->bo_get_prop = radeon_bo_get_prop;
+       kms->bo_destroy = radeon_bo_destroy;
+       kms->get_prop = radeon_get_prop;
+       kms->destroy = radeon_destroy;
+       *out = kms;
+
+       return 0;
+}