diff options
Diffstat (limited to 'nouveau/nouveau_device.c')
| -rw-r--r-- | nouveau/nouveau_device.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/nouveau/nouveau_device.c b/nouveau/nouveau_device.c new file mode 100644 index 00000000..0982d3b6 --- /dev/null +++ b/nouveau/nouveau_device.c @@ -0,0 +1,194 @@ +/* + * Copyright 2007 Nouveau Project + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS 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. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> + +#include "nouveau_private.h" + +#if NOUVEAU_DRM_HEADER_PATCHLEVEL != 15 +#error nouveau_drm.h does not match expected patchlevel, update libdrm. +#endif + +int +nouveau_device_open_existing(struct nouveau_device **dev, int close, + int fd, drm_context_t ctx) +{ + struct nouveau_device_priv *nvdev; + drmVersionPtr ver; + uint64_t value; + int ret; + + if (!dev || *dev) + return -EINVAL; + + ver = drmGetVersion(fd); + if (!ver || ver->version_patchlevel != NOUVEAU_DRM_HEADER_PATCHLEVEL) + return -EINVAL; + drmFreeVersion(ver); + + nvdev = calloc(1, sizeof(*nvdev)); + if (!nvdev) + return -ENOMEM; + nvdev->fd = fd; + nvdev->ctx = ctx; + nvdev->needs_close = close; + + ret = drmCommandNone(nvdev->fd, DRM_NOUVEAU_CARD_INIT); + if (ret) { + nouveau_device_close((void *)&nvdev); + return ret; + } + + ret = nouveau_device_get_param(&nvdev->base, + NOUVEAU_GETPARAM_VM_VRAM_BASE, &value); + if (ret) { + nouveau_device_close((void *)&nvdev); + return ret; + } + nvdev->base.vm_vram_base = value; + + ret = nouveau_device_get_param(&nvdev->base, + NOUVEAU_GETPARAM_FB_SIZE, &value); + if (ret) { + nouveau_device_close((void *)&nvdev); + return ret; + } + nvdev->base.vm_vram_size = value; + + ret = nouveau_device_get_param(&nvdev->base, + NOUVEAU_GETPARAM_AGP_SIZE, &value); + if (ret) { + nouveau_device_close((void *)&nvdev); + return ret; + } + nvdev->base.vm_gart_size = value; + + ret = nouveau_bo_init(&nvdev->base); + if (ret) { + nouveau_device_close((void *)&nvdev); + return ret; + } + + ret = nouveau_device_get_param(&nvdev->base, + NOUVEAU_GETPARAM_CHIPSET_ID, &value); + if (ret) { + nouveau_device_close((void *)&nvdev); + return ret; + } + nvdev->base.chipset = value; + + *dev = &nvdev->base; + return 0; +} + +int +nouveau_device_open(struct nouveau_device **dev, const char *busid) +{ + drm_context_t ctx; + int fd, ret; + + if (!dev || *dev) + return -EINVAL; + + fd = drmOpen("nouveau", busid); + if (fd < 0) + return -EINVAL; + + ret = drmCreateContext(fd, &ctx); + if (ret) { + drmClose(fd); + return ret; + } + + ret = nouveau_device_open_existing(dev, 1, fd, ctx); + if (ret) { + drmDestroyContext(fd, ctx); + drmClose(fd); + return ret; + } + + return 0; +} + +void +nouveau_device_close(struct nouveau_device **dev) +{ + struct nouveau_device_priv *nvdev; + + if (!dev || !*dev) + return; + nvdev = nouveau_device(*dev); + *dev = NULL; + + nouveau_bo_takedown(&nvdev->base); + + if (nvdev->needs_close) { + drmDestroyContext(nvdev->fd, nvdev->ctx); + drmClose(nvdev->fd); + } + free(nvdev); +} + +int +nouveau_device_get_param(struct nouveau_device *dev, + uint64_t param, uint64_t *value) +{ + struct nouveau_device_priv *nvdev = nouveau_device(dev); + struct drm_nouveau_getparam g; + int ret; + + if (!nvdev || !value) + return -EINVAL; + + g.param = param; + ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GETPARAM, + &g, sizeof(g)); + if (ret) + return ret; + + *value = g.value; + return 0; +} + +int +nouveau_device_set_param(struct nouveau_device *dev, + uint64_t param, uint64_t value) +{ + struct nouveau_device_priv *nvdev = nouveau_device(dev); + struct drm_nouveau_setparam s; + int ret; + + if (!nvdev) + return -EINVAL; + + s.param = param; + s.value = value; + ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_SETPARAM, + &s, sizeof(s)); + if (ret) + return ret; + + return 0; +} + |