libkms/radeon: Add backend
Todo: What tiling should be set on scanout buffers? Haven't tested besides compiling it.main
nobled
Benjamin Franzke
parent
36d4939343
commit
ed7d177f66
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@ -26,6 +26,10 @@ if HAVE_NOUVEAU
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libkms_la_SOURCES += nouveau.c
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endif
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if HAVE_RADEON
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libkms_la_SOURCES += radeon.c
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endif
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libkmsincludedir = ${includedir}/libkms
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libkmsinclude_HEADERS = libkms.h
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@ -70,4 +70,6 @@ int intel_create(int fd, struct kms_driver **out);
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int nouveau_create(int fd, struct kms_driver **out);
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int radeon_create(int fd, struct kms_driver **out);
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#endif
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@ -110,6 +110,10 @@ linux_from_sysfs(int fd, struct kms_driver **out)
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#ifdef HAVE_NOUVEAU
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else if (!strcmp(name, "nouveau"))
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ret = nouveau_create(fd, out);
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#endif
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#ifdef HAVE_RADEON
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else if (!strcmp(name, "radeon"))
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ret = radeon_create(fd, out);
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#endif
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else
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ret = -ENOSYS;
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@ -0,0 +1,242 @@
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/**************************************************************************
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*
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* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#define HAVE_STDINT_H
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#define _FILE_OFFSET_BITS 64
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "internal.h"
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include "xf86drm.h"
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#include "radeon_drm.h"
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#define ALIGNMENT 512
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struct radeon_bo
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{
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struct kms_bo base;
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unsigned map_count;
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};
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static int
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radeon_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
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{
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switch (key) {
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case KMS_BO_TYPE:
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*out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int
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radeon_destroy(struct kms_driver *kms)
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{
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free(kms);
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return 0;
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}
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static int
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radeon_bo_create(struct kms_driver *kms,
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const unsigned width, const unsigned height,
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const enum kms_bo_type type, const unsigned *attr,
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struct kms_bo **out)
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{
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struct drm_radeon_gem_create arg;
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unsigned size, pitch;
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struct radeon_bo *bo;
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int i, ret;
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for (i = 0; attr[i]; i += 2) {
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switch (attr[i]) {
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case KMS_WIDTH:
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case KMS_HEIGHT:
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case KMS_BO_TYPE:
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break;
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default:
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return -EINVAL;
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}
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}
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switch (type) {
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case KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8:
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pitch = 4 * 64;
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size = 4 * 64 * 64;
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break;
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case KMS_BO_TYPE_SCANOUT_X8R8G8B8:
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pitch = width * 4;
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pitch = (pitch + ALIGNMENT - 1) & ~(ALIGNMENT - 1);
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size = pitch * height;
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break;
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default:
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return -EINVAL;
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}
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bo = calloc(1, sizeof(*bo));
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if (!bo)
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return -ENOMEM;
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memset(&arg, 0, sizeof(arg));
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arg.size = size;
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arg.alignment = ALIGNMENT;
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arg.initial_domain = RADEON_GEM_DOMAIN_CPU;
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arg.flags = 0;
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arg.handle = 0;
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ret = drmCommandWriteRead(kms->fd, DRM_RADEON_GEM_CREATE,
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&arg, sizeof(arg));
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if (ret)
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goto err_free;
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bo->base.kms = kms;
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bo->base.handle = arg.handle;
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bo->base.size = size;
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bo->base.pitch = pitch;
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bo->base.offset = 0;
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bo->map_count = 0;
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*out = &bo->base;
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return 0;
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err_free:
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free(bo);
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return ret;
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}
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static int
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radeon_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
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{
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switch (key) {
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default:
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return -EINVAL;
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}
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}
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static int
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radeon_bo_map(struct kms_bo *_bo, void **out)
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{
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struct radeon_bo *bo = (struct radeon_bo *)_bo;
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struct drm_radeon_gem_mmap arg;
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void *map = NULL;
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int ret;
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if (bo->base.ptr) {
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bo->map_count++;
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*out = bo->base.ptr;
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return 0;
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}
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memset(&arg, 0, sizeof(arg));
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arg.handle = bo->base.handle;
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arg.offset = bo->base.offset;
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arg.size = (uint64_t)bo->base.size;
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ret = drmCommandWriteRead(bo->base.kms->fd, DRM_RADEON_GEM_MMAP,
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&arg, sizeof(arg));
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if (ret)
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return -errno;
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map = mmap(0, arg.size, PROT_READ | PROT_WRITE, MAP_SHARED,
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bo->base.kms->fd, arg.addr_ptr);
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if (map == MAP_FAILED)
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return -errno;
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bo->base.ptr = map;
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bo->map_count++;
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*out = bo->base.ptr;
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return 0;
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}
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static int
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radeon_bo_unmap(struct kms_bo *_bo)
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{
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struct radeon_bo *bo = (struct radeon_bo *)_bo;
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if (--bo->map_count == 0) {
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munmap(bo->base.ptr, bo->base.size);
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bo->base.ptr = NULL;
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}
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return 0;
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}
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static int
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radeon_bo_destroy(struct kms_bo *_bo)
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{
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struct radeon_bo *bo = (struct radeon_bo *)_bo;
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struct drm_gem_close arg;
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int ret;
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if (bo->base.ptr) {
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/* XXX Sanity check map_count */
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munmap(bo->base.ptr, bo->base.size);
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bo->base.ptr = NULL;
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}
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memset(&arg, 0, sizeof(arg));
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arg.handle = bo->base.handle;
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ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
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if (ret)
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return -errno;
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free(bo);
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return 0;
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}
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int
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radeon_create(int fd, struct kms_driver **out)
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{
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struct kms_driver *kms;
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kms = calloc(1, sizeof(*kms));
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if (!kms)
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return -ENOMEM;
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kms->fd = fd;
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kms->bo_create = radeon_bo_create;
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kms->bo_map = radeon_bo_map;
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kms->bo_unmap = radeon_bo_unmap;
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kms->bo_get_prop = radeon_bo_get_prop;
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kms->bo_destroy = radeon_bo_destroy;
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kms->get_prop = radeon_get_prop;
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kms->destroy = radeon_destroy;
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*out = kms;
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return 0;
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}
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