| /* |
| * Copyright 2012 Red Hat Inc. |
| * |
| * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. |
| * |
| * Authors: Ben Skeggs |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include <stdbool.h> |
| #include <assert.h> |
| #include <errno.h> |
| #include <sys/mman.h> |
| |
| #include <xf86drm.h> |
| #include <xf86atomic.h> |
| #include "libdrm_lists.h" |
| #include "nouveau_drm.h" |
| |
| #include "nouveau.h" |
| #include "private.h" |
| |
| #ifdef DEBUG |
| uint32_t nouveau_debug = 0; |
| |
| static void |
| debug_init(char *args) |
| { |
| if (args) { |
| int n = strtol(args, NULL, 0); |
| if (n >= 0) |
| nouveau_debug = n; |
| } |
| } |
| #endif |
| |
| /* this is the old libdrm's version of nouveau_device_wrap(), the symbol |
| * is kept here to prevent AIGLX from crashing if the DDX is linked against |
| * the new libdrm, but the DRI driver against the old |
| */ |
| int |
| nouveau_device_open_existing(struct nouveau_device **pdev, int close, int fd, |
| drm_context_t ctx) |
| { |
| return -EACCES; |
| } |
| |
| int |
| nouveau_device_wrap(int fd, int close, struct nouveau_device **pdev) |
| { |
| struct nouveau_device_priv *nvdev = calloc(1, sizeof(*nvdev)); |
| struct nouveau_device *dev = &nvdev->base; |
| uint64_t chipset, vram, gart, bousage; |
| drmVersionPtr ver; |
| int ret; |
| |
| #ifdef DEBUG |
| debug_init(getenv("NOUVEAU_LIBDRM_DEBUG")); |
| #endif |
| |
| if (!nvdev) |
| return -ENOMEM; |
| nvdev->base.fd = fd; |
| |
| ver = drmGetVersion(fd); |
| if (ver) dev->drm_version = (ver->version_major << 24) | |
| (ver->version_minor << 8) | |
| ver->version_patchlevel; |
| drmFreeVersion(ver); |
| |
| if ( dev->drm_version != 0x00000010 && |
| (dev->drm_version < 0x01000000 || |
| dev->drm_version >= 0x02000000)) { |
| nouveau_device_del(&dev); |
| return -EINVAL; |
| } |
| |
| ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_CHIPSET_ID, &chipset); |
| if (ret == 0) |
| ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_FB_SIZE, &vram); |
| if (ret == 0) |
| ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_AGP_SIZE, &gart); |
| if (ret) { |
| nouveau_device_del(&dev); |
| return ret; |
| } |
| |
| ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_HAS_BO_USAGE, &bousage); |
| if (ret == 0) |
| nvdev->have_bo_usage = (bousage != 0); |
| |
| nvdev->close = close; |
| DRMINITLISTHEAD(&nvdev->bo_list); |
| nvdev->base.object.oclass = NOUVEAU_DEVICE_CLASS; |
| nvdev->base.lib_version = 0x01000000; |
| nvdev->base.chipset = chipset; |
| nvdev->base.vram_size = vram; |
| nvdev->base.gart_size = gart; |
| nvdev->base.vram_limit = (nvdev->base.vram_size * 80) / 100; |
| nvdev->base.gart_limit = (nvdev->base.gart_size * 80) / 100; |
| |
| *pdev = &nvdev->base; |
| return 0; |
| } |
| |
| int |
| nouveau_device_open(const char *busid, struct nouveau_device **pdev) |
| { |
| int ret = -ENODEV, fd = drmOpen("nouveau", busid); |
| if (fd >= 0) { |
| ret = nouveau_device_wrap(fd, 1, pdev); |
| if (ret) |
| drmClose(fd); |
| } |
| return ret; |
| } |
| |
| void |
| nouveau_device_del(struct nouveau_device **pdev) |
| { |
| struct nouveau_device_priv *nvdev = nouveau_device(*pdev); |
| if (nvdev) { |
| if (nvdev->close) |
| drmClose(nvdev->base.fd); |
| free(nvdev->client); |
| free(nvdev); |
| *pdev = NULL; |
| } |
| } |
| |
| int |
| nouveau_getparam(struct nouveau_device *dev, uint64_t param, uint64_t *value) |
| { |
| struct drm_nouveau_getparam r = { param, 0 }; |
| int fd = dev->fd, ret = |
| drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &r, sizeof(r)); |
| *value = r.value; |
| return ret; |
| } |
| |
| int |
| nouveau_setparam(struct nouveau_device *dev, uint64_t param, uint64_t value) |
| { |
| struct drm_nouveau_setparam r = { param, value }; |
| return drmCommandWrite(dev->fd, DRM_NOUVEAU_SETPARAM, &r, sizeof(r)); |
| } |
| |
| int |
| nouveau_client_new(struct nouveau_device *dev, struct nouveau_client **pclient) |
| { |
| struct nouveau_device_priv *nvdev = nouveau_device(dev); |
| struct nouveau_client_priv *pcli; |
| int id = 0, i, ret = -ENOMEM; |
| uint32_t *clients; |
| |
| for (i = 0; i < nvdev->nr_client; i++) { |
| id = ffs(nvdev->client[i]) - 1; |
| if (id >= 0) |
| goto out; |
| } |
| |
| clients = realloc(nvdev->client, sizeof(uint32_t) * (i + 1)); |
| if (!clients) |
| return ret; |
| nvdev->client = clients; |
| nvdev->client[i] = 0; |
| nvdev->nr_client++; |
| |
| out: |
| pcli = calloc(1, sizeof(*pcli)); |
| if (pcli) { |
| nvdev->client[i] |= (1 << id); |
| pcli->base.device = dev; |
| pcli->base.id = (i * 32) + id; |
| ret = 0; |
| } |
| |
| *pclient = &pcli->base; |
| return ret; |
| } |
| |
| void |
| nouveau_client_del(struct nouveau_client **pclient) |
| { |
| struct nouveau_client_priv *pcli = nouveau_client(*pclient); |
| struct nouveau_device_priv *nvdev; |
| if (pcli) { |
| int id = pcli->base.id; |
| nvdev = nouveau_device(pcli->base.device); |
| nvdev->client[id / 32] &= ~(1 << (id % 32)); |
| free(pcli->kref); |
| free(pcli); |
| } |
| } |
| |
| int |
| nouveau_object_new(struct nouveau_object *parent, uint64_t handle, |
| uint32_t oclass, void *data, uint32_t length, |
| struct nouveau_object **pobj) |
| { |
| struct nouveau_device *dev; |
| struct nouveau_object *obj; |
| int ret = -EINVAL; |
| |
| if (length == 0) |
| length = sizeof(struct nouveau_object *); |
| obj = malloc(sizeof(*obj) + length); |
| obj->parent = parent; |
| obj->handle = handle; |
| obj->oclass = oclass; |
| obj->length = length; |
| obj->data = obj + 1; |
| if (data) |
| memcpy(obj->data, data, length); |
| *(struct nouveau_object **)obj->data = obj; |
| |
| dev = nouveau_object_find(obj, NOUVEAU_DEVICE_CLASS); |
| switch (parent->oclass) { |
| case NOUVEAU_DEVICE_CLASS: |
| switch (obj->oclass) { |
| case NOUVEAU_FIFO_CHANNEL_CLASS: |
| { |
| if (dev->chipset < 0xc0) |
| ret = abi16_chan_nv04(obj); |
| else |
| ret = abi16_chan_nvc0(obj); |
| } |
| break; |
| default: |
| break; |
| } |
| break; |
| case NOUVEAU_FIFO_CHANNEL_CLASS: |
| switch (obj->oclass) { |
| case NOUVEAU_NOTIFIER_CLASS: |
| ret = abi16_ntfy(obj); |
| break; |
| default: |
| ret = abi16_engobj(obj); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| if (ret) { |
| free(obj); |
| return ret; |
| } |
| |
| *pobj = obj; |
| return 0; |
| } |
| |
| void |
| nouveau_object_del(struct nouveau_object **pobj) |
| { |
| struct drm_nouveau_gpuobj_free req; |
| struct nouveau_object *obj = *pobj; |
| struct nouveau_device *dev; |
| if (obj) { |
| dev = nouveau_object_find(obj, NOUVEAU_DEVICE_CLASS); |
| req.channel = obj->parent->handle; |
| req.handle = obj->handle; |
| drmCommandWrite(dev->fd, DRM_NOUVEAU_GPUOBJ_FREE, |
| &req, sizeof(req)); |
| } |
| free(obj); |
| *pobj = NULL; |
| } |
| |
| void * |
| nouveau_object_find(struct nouveau_object *obj, uint32_t pclass) |
| { |
| while (obj && obj->oclass != pclass) { |
| obj = obj->parent; |
| if (pclass == NOUVEAU_PARENT_CLASS) |
| break; |
| } |
| return obj; |
| } |
| |
| static void |
| nouveau_bo_del(struct nouveau_bo *bo) |
| { |
| struct nouveau_bo_priv *nvbo = nouveau_bo(bo); |
| struct drm_gem_close req = { bo->handle }; |
| DRMLISTDEL(&nvbo->head); |
| if (bo->map) |
| munmap(bo->map, bo->size); |
| drmIoctl(bo->device->fd, DRM_IOCTL_GEM_CLOSE, &req); |
| free(nvbo); |
| } |
| |
| int |
| nouveau_bo_new(struct nouveau_device *dev, uint32_t flags, uint32_t align, |
| uint64_t size, union nouveau_bo_config *config, |
| struct nouveau_bo **pbo) |
| { |
| struct nouveau_device_priv *nvdev = nouveau_device(dev); |
| struct nouveau_bo_priv *nvbo = calloc(1, sizeof(*nvbo)); |
| struct nouveau_bo *bo = &nvbo->base; |
| int ret; |
| |
| if (!nvbo) |
| return -ENOMEM; |
| atomic_set(&nvbo->refcnt, 1); |
| bo->device = dev; |
| bo->flags = flags; |
| bo->size = size; |
| |
| ret = abi16_bo_init(bo, align, config); |
| if (ret) { |
| free(nvbo); |
| return ret; |
| } |
| |
| DRMLISTADD(&nvbo->head, &nvdev->bo_list); |
| |
| *pbo = bo; |
| return 0; |
| } |
| |
| int |
| nouveau_bo_wrap(struct nouveau_device *dev, uint32_t handle, |
| struct nouveau_bo **pbo) |
| { |
| struct nouveau_device_priv *nvdev = nouveau_device(dev); |
| struct drm_nouveau_gem_info req = { .handle = handle }; |
| struct nouveau_bo_priv *nvbo; |
| int ret; |
| |
| DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) { |
| if (nvbo->base.handle == handle) { |
| *pbo = NULL; |
| nouveau_bo_ref(&nvbo->base, pbo); |
| return 0; |
| } |
| } |
| |
| ret = drmCommandWriteRead(dev->fd, DRM_NOUVEAU_GEM_INFO, |
| &req, sizeof(req)); |
| if (ret) |
| return ret; |
| |
| nvbo = calloc(1, sizeof(*nvbo)); |
| if (nvbo) { |
| atomic_set(&nvbo->refcnt, 1); |
| nvbo->base.device = dev; |
| abi16_bo_info(&nvbo->base, &req); |
| DRMLISTADD(&nvbo->head, &nvdev->bo_list); |
| *pbo = &nvbo->base; |
| return 0; |
| } |
| |
| return -ENOMEM; |
| } |
| |
| int |
| nouveau_bo_name_ref(struct nouveau_device *dev, uint32_t name, |
| struct nouveau_bo **pbo) |
| { |
| struct nouveau_device_priv *nvdev = nouveau_device(dev); |
| struct nouveau_bo_priv *nvbo; |
| struct drm_gem_open req = { .name = name }; |
| int ret; |
| |
| DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) { |
| if (nvbo->name == name) { |
| *pbo = NULL; |
| nouveau_bo_ref(&nvbo->base, pbo); |
| return 0; |
| } |
| } |
| |
| ret = drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req); |
| if (ret == 0) { |
| ret = nouveau_bo_wrap(dev, req.handle, pbo); |
| nouveau_bo((*pbo))->name = name; |
| } |
| |
| return ret; |
| } |
| |
| int |
| nouveau_bo_name_get(struct nouveau_bo *bo, uint32_t *name) |
| { |
| struct drm_gem_flink req = { .handle = bo->handle }; |
| struct nouveau_bo_priv *nvbo = nouveau_bo(bo); |
| if (!nvbo->name) { |
| int ret = drmIoctl(bo->device->fd, DRM_IOCTL_GEM_FLINK, &req); |
| if (ret) |
| return ret; |
| nvbo->name = req.name; |
| } |
| *name = nvbo->name; |
| return 0; |
| } |
| |
| void |
| nouveau_bo_ref(struct nouveau_bo *bo, struct nouveau_bo **pref) |
| { |
| struct nouveau_bo *ref = *pref; |
| if (bo) { |
| atomic_inc(&nouveau_bo(bo)->refcnt); |
| } |
| if (ref) { |
| if (atomic_dec_and_test(&nouveau_bo(ref)->refcnt)) |
| nouveau_bo_del(ref); |
| } |
| *pref = bo; |
| } |
| |
| int |
| nouveau_bo_wait(struct nouveau_bo *bo, uint32_t access, |
| struct nouveau_client *client) |
| { |
| struct nouveau_bo_priv *nvbo = nouveau_bo(bo); |
| struct drm_nouveau_gem_cpu_prep req; |
| struct nouveau_pushbuf *push; |
| int ret = 0; |
| |
| if (!(access & NOUVEAU_BO_RDWR)) |
| return 0; |
| |
| push = cli_push_get(client, bo); |
| if (push && push->channel) |
| nouveau_pushbuf_kick(push, push->channel); |
| |
| if (!nvbo->name && !(nvbo->access & NOUVEAU_BO_WR) && |
| !( access & NOUVEAU_BO_WR)) |
| return 0; |
| |
| req.handle = bo->handle; |
| req.flags = 0; |
| if (access & NOUVEAU_BO_WR) |
| req.flags |= NOUVEAU_GEM_CPU_PREP_WRITE; |
| if (access & NOUVEAU_BO_NOBLOCK) |
| req.flags |= NOUVEAU_GEM_CPU_PREP_NOWAIT; |
| |
| ret = drmCommandWrite(bo->device->fd, DRM_NOUVEAU_GEM_CPU_PREP, |
| &req, sizeof(req)); |
| if (ret == 0) |
| nvbo->access = 0; |
| return ret; |
| } |
| |
| int |
| nouveau_bo_map(struct nouveau_bo *bo, uint32_t access, |
| struct nouveau_client *client) |
| { |
| struct nouveau_bo_priv *nvbo = nouveau_bo(bo); |
| if (bo->map == NULL) { |
| bo->map = mmap(0, bo->size, PROT_READ | PROT_WRITE, |
| MAP_SHARED, bo->device->fd, nvbo->map_handle); |
| if (bo->map == MAP_FAILED) { |
| bo->map = NULL; |
| return -errno; |
| } |
| } |
| return nouveau_bo_wait(bo, access, client); |
| } |