From 3f13df4d019cfcbef3f9909e3b993896d3c934e6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:22:22 +0200 Subject: Adding upstream version 2.4.114. Signed-off-by: Daniel Baumann --- nouveau/nouveau.c | 887 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 887 insertions(+) create mode 100644 nouveau/nouveau.c (limited to 'nouveau/nouveau.c') diff --git a/nouveau/nouveau.c b/nouveau/nouveau.c new file mode 100644 index 0000000..7b4efde --- /dev/null +++ b/nouveau/nouveau.c @@ -0,0 +1,887 @@ +/* + * 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 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include "libdrm_macros.h" +#include "libdrm_lists.h" +#include "nouveau_drm.h" + +#include "nouveau.h" +#include "private.h" + +#include "nvif/class.h" +#include "nvif/cl0080.h" +#include "nvif/ioctl.h" +#include "nvif/unpack.h" + +drm_private FILE *nouveau_out = NULL; +drm_private uint32_t nouveau_debug = 0; + +static void +debug_init(void) +{ + static bool once = false; + char *debug, *out; + + if (once) + return; + once = true; + + debug = getenv("NOUVEAU_LIBDRM_DEBUG"); + if (debug) { + int n = strtol(debug, NULL, 0); + if (n >= 0) + nouveau_debug = n; + + } + + nouveau_out = stderr; + out = getenv("NOUVEAU_LIBDRM_OUT"); + if (out) { + FILE *fout = fopen(out, "w"); + if (fout) + nouveau_out = fout; + } +} + +static int +nouveau_object_ioctl(struct nouveau_object *obj, void *data, uint32_t size) +{ + struct nouveau_drm *drm = nouveau_drm(obj); + union { + struct nvif_ioctl_v0 v0; + } *args = data; + uint32_t argc = size; + int ret = -ENOSYS; + + if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { + if (!obj->length) { + if (obj != &drm->client) + args->v0.object = (unsigned long)(void *)obj; + else + args->v0.object = 0; + args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY; + args->v0.route = 0x00; + } else { + args->v0.route = 0xff; + args->v0.token = obj->handle; + } + } else + return ret; + + return drmCommandWriteRead(drm->fd, DRM_NOUVEAU_NVIF, args, argc); +} + +drm_public int +nouveau_object_mthd(struct nouveau_object *obj, + uint32_t mthd, void *data, uint32_t size) +{ + struct nouveau_drm *drm = nouveau_drm(obj); + struct { + struct nvif_ioctl_v0 ioctl; + struct nvif_ioctl_mthd_v0 mthd; + } *args; + uint32_t argc = sizeof(*args) + size; + uint8_t stack[128]; + int ret; + + if (!drm->nvif) + return -ENOSYS; + + if (argc > sizeof(stack)) { + if (!(args = malloc(argc))) + return -ENOMEM; + } else { + args = (void *)stack; + } + args->ioctl.version = 0; + args->ioctl.type = NVIF_IOCTL_V0_MTHD; + args->mthd.version = 0; + args->mthd.method = mthd; + + memcpy(args->mthd.data, data, size); + ret = nouveau_object_ioctl(obj, args, argc); + memcpy(data, args->mthd.data, size); + if (args != (void *)stack) + free(args); + return ret; +} + +drm_public void +nouveau_object_sclass_put(struct nouveau_sclass **psclass) +{ + free(*psclass); + *psclass = NULL; +} + +drm_public int +nouveau_object_sclass_get(struct nouveau_object *obj, + struct nouveau_sclass **psclass) +{ + struct nouveau_drm *drm = nouveau_drm(obj); + struct { + struct nvif_ioctl_v0 ioctl; + struct nvif_ioctl_sclass_v0 sclass; + } *args = NULL; + struct nouveau_sclass *sclass; + int ret, cnt = 0, i; + uint32_t size; + + if (!drm->nvif) + return abi16_sclass(obj, psclass); + + while (1) { + size = sizeof(*args) + cnt * sizeof(args->sclass.oclass[0]); + if (!(args = malloc(size))) + return -ENOMEM; + args->ioctl.version = 0; + args->ioctl.type = NVIF_IOCTL_V0_SCLASS; + args->sclass.version = 0; + args->sclass.count = cnt; + + ret = nouveau_object_ioctl(obj, args, size); + if (ret == 0 && args->sclass.count <= cnt) + break; + cnt = args->sclass.count; + free(args); + if (ret != 0) + return ret; + } + + if ((sclass = calloc(args->sclass.count, sizeof(*sclass)))) { + for (i = 0; i < args->sclass.count; i++) { + sclass[i].oclass = args->sclass.oclass[i].oclass; + sclass[i].minver = args->sclass.oclass[i].minver; + sclass[i].maxver = args->sclass.oclass[i].maxver; + } + *psclass = sclass; + ret = args->sclass.count; + } else { + ret = -ENOMEM; + } + + free(args); + return ret; +} + +drm_public int +nouveau_object_mclass(struct nouveau_object *obj, + const struct nouveau_mclass *mclass) +{ + struct nouveau_sclass *sclass; + int ret = -ENODEV; + int cnt, i, j; + + cnt = nouveau_object_sclass_get(obj, &sclass); + if (cnt < 0) + return cnt; + + for (i = 0; ret < 0 && mclass[i].oclass; i++) { + for (j = 0; j < cnt; j++) { + if (mclass[i].oclass == sclass[j].oclass && + mclass[i].version >= sclass[j].minver && + mclass[i].version <= sclass[j].maxver) { + ret = i; + break; + } + } + } + + nouveau_object_sclass_put(&sclass); + return ret; +} + +static void +nouveau_object_fini(struct nouveau_object *obj) +{ + struct { + struct nvif_ioctl_v0 ioctl; + struct nvif_ioctl_del del; + } args = { + .ioctl.type = NVIF_IOCTL_V0_DEL, + }; + + if (obj->data) { + abi16_delete(obj); + free(obj->data); + obj->data = NULL; + return; + } + + nouveau_object_ioctl(obj, &args, sizeof(args)); +} + +static int +nouveau_object_init(struct nouveau_object *parent, uint32_t handle, + int32_t oclass, void *data, uint32_t size, + struct nouveau_object *obj) +{ + struct nouveau_drm *drm = nouveau_drm(parent); + struct { + struct nvif_ioctl_v0 ioctl; + struct nvif_ioctl_new_v0 new; + } *args; + uint32_t argc = sizeof(*args) + size; + int (*func)(struct nouveau_object *); + int ret = -ENOSYS; + + obj->parent = parent; + obj->handle = handle; + obj->oclass = oclass; + obj->length = 0; + obj->data = NULL; + + if (!abi16_object(obj, &func) && drm->nvif) { + if (!(args = malloc(argc))) + return -ENOMEM; + args->ioctl.version = 0; + args->ioctl.type = NVIF_IOCTL_V0_NEW; + args->new.version = 0; + args->new.route = NVIF_IOCTL_V0_ROUTE_NVIF; + args->new.token = (unsigned long)(void *)obj; + args->new.object = (unsigned long)(void *)obj; + args->new.handle = handle; + args->new.oclass = oclass; + memcpy(args->new.data, data, size); + ret = nouveau_object_ioctl(parent, args, argc); + memcpy(data, args->new.data, size); + free(args); + } else + if (func) { + obj->length = size ? size : sizeof(struct nouveau_object *); + if (!(obj->data = malloc(obj->length))) + return -ENOMEM; + if (data) + memcpy(obj->data, data, obj->length); + *(struct nouveau_object **)obj->data = obj; + + ret = func(obj); + } + + if (ret) { + nouveau_object_fini(obj); + return ret; + } + + return 0; +} + +drm_public 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_object *obj; + int ret; + + if (!(obj = malloc(sizeof(*obj)))) + return -ENOMEM; + + ret = nouveau_object_init(parent, handle, oclass, data, length, obj); + if (ret) { + free(obj); + return ret; + } + + *pobj = obj; + return 0; +} + +drm_public void +nouveau_object_del(struct nouveau_object **pobj) +{ + struct nouveau_object *obj = *pobj; + if (obj) { + nouveau_object_fini(obj); + free(obj); + *pobj = NULL; + } +} + +drm_public void +nouveau_drm_del(struct nouveau_drm **pdrm) +{ + free(*pdrm); + *pdrm = NULL; +} + +drm_public int +nouveau_drm_new(int fd, struct nouveau_drm **pdrm) +{ + struct nouveau_drm *drm; + drmVersionPtr ver; + + debug_init(); + + if (!(drm = calloc(1, sizeof(*drm)))) + return -ENOMEM; + drm->fd = fd; + + if (!(ver = drmGetVersion(fd))) { + nouveau_drm_del(&drm); + return -EINVAL; + } + *pdrm = drm; + + drm->version = (ver->version_major << 24) | + (ver->version_minor << 8) | + ver->version_patchlevel; + drm->nvif = (drm->version >= 0x01000301); + drmFreeVersion(ver); + return 0; +} + +/* 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 + */ +drm_public int +nouveau_device_open_existing(struct nouveau_device **pdev, int close, int fd, + drm_context_t ctx) +{ + return -EACCES; +} + +drm_public int +nouveau_device_new(struct nouveau_object *parent, int32_t oclass, + void *data, uint32_t size, struct nouveau_device **pdev) +{ + struct nv_device_info_v0 info = {}; + union { + struct nv_device_v0 v0; + } *args = data; + uint32_t argc = size; + struct nouveau_drm *drm = nouveau_drm(parent); + struct nouveau_device_priv *nvdev; + struct nouveau_device *dev; + uint64_t v; + char *tmp; + int ret = -ENOSYS; + + if (oclass != NV_DEVICE || + nvif_unpack(ret, &data, &size, args->v0, 0, 0, false)) + return ret; + + if (!(nvdev = calloc(1, sizeof(*nvdev)))) + return -ENOMEM; + dev = *pdev = &nvdev->base; + dev->fd = -1; + + if (drm->nvif) { + ret = nouveau_object_init(parent, 0, oclass, args, argc, + &dev->object); + if (ret) + goto done; + + info.version = 0; + + ret = nouveau_object_mthd(&dev->object, NV_DEVICE_V0_INFO, + &info, sizeof(info)); + if (ret) + goto done; + + nvdev->base.chipset = info.chipset; + nvdev->have_bo_usage = true; + } else + if (args->v0.device == ~0ULL) { + nvdev->base.object.parent = &drm->client; + nvdev->base.object.handle = ~0ULL; + nvdev->base.object.oclass = NOUVEAU_DEVICE_CLASS; + nvdev->base.object.length = ~0; + + ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_CHIPSET_ID, &v); + if (ret) + goto done; + nvdev->base.chipset = v; + + ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_HAS_BO_USAGE, &v); + if (ret == 0) + nvdev->have_bo_usage = (v != 0); + } else + return -ENOSYS; + + ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_FB_SIZE, &v); + if (ret) + goto done; + nvdev->base.vram_size = v; + + ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_AGP_SIZE, &v); + if (ret) + goto done; + nvdev->base.gart_size = v; + + tmp = getenv("NOUVEAU_LIBDRM_VRAM_LIMIT_PERCENT"); + if (tmp) + nvdev->vram_limit_percent = atoi(tmp); + else + nvdev->vram_limit_percent = 80; + + nvdev->base.vram_limit = + (nvdev->base.vram_size * nvdev->vram_limit_percent) / 100; + + tmp = getenv("NOUVEAU_LIBDRM_GART_LIMIT_PERCENT"); + if (tmp) + nvdev->gart_limit_percent = atoi(tmp); + else + nvdev->gart_limit_percent = 80; + + nvdev->base.gart_limit = + (nvdev->base.gart_size * nvdev->gart_limit_percent) / 100; + + ret = pthread_mutex_init(&nvdev->lock, NULL); + DRMINITLISTHEAD(&nvdev->bo_list); +done: + if (ret) + nouveau_device_del(pdev); + return ret; +} + +drm_public int +nouveau_device_wrap(int fd, int close, struct nouveau_device **pdev) +{ + struct nouveau_drm *drm; + struct nouveau_device_priv *nvdev; + int ret; + + ret = nouveau_drm_new(fd, &drm); + if (ret) + return ret; + drm->nvif = false; + + ret = nouveau_device_new(&drm->client, NV_DEVICE, + &(struct nv_device_v0) { + .device = ~0ULL, + }, sizeof(struct nv_device_v0), pdev); + if (ret) { + nouveau_drm_del(&drm); + return ret; + } + + nvdev = nouveau_device(*pdev); + nvdev->base.fd = drm->fd; + nvdev->base.drm_version = drm->version; + nvdev->close = close; + return 0; +} + +drm_public 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; +} + +drm_public void +nouveau_device_del(struct nouveau_device **pdev) +{ + struct nouveau_device_priv *nvdev = nouveau_device(*pdev); + if (nvdev) { + free(nvdev->client); + pthread_mutex_destroy(&nvdev->lock); + if (nvdev->base.fd >= 0) { + struct nouveau_drm *drm = + nouveau_drm(&nvdev->base.object); + nouveau_drm_del(&drm); + if (nvdev->close) + drmClose(nvdev->base.fd); + } + free(nvdev); + *pdev = NULL; + } +} + +drm_public int +nouveau_getparam(struct nouveau_device *dev, uint64_t param, uint64_t *value) +{ + struct nouveau_drm *drm = nouveau_drm(&dev->object); + struct drm_nouveau_getparam r = { .param = param }; + int fd = drm->fd, ret = + drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &r, sizeof(r)); + *value = r.value; + return ret; +} + +drm_public int +nouveau_setparam(struct nouveau_device *dev, uint64_t param, uint64_t value) +{ + struct nouveau_drm *drm = nouveau_drm(&dev->object); + struct drm_nouveau_setparam r = { .param = param, .value = value }; + return drmCommandWrite(drm->fd, DRM_NOUVEAU_SETPARAM, &r, sizeof(r)); +} + +drm_public 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; + + pthread_mutex_lock(&nvdev->lock); + + 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) + goto unlock; + 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; + +unlock: + pthread_mutex_unlock(&nvdev->lock); + return ret; +} + +drm_public 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); + pthread_mutex_lock(&nvdev->lock); + nvdev->client[id / 32] &= ~(1 << (id % 32)); + pthread_mutex_unlock(&nvdev->lock); + free(pcli->kref); + free(pcli); + } +} + +static void +nouveau_bo_del(struct nouveau_bo *bo) +{ + struct nouveau_drm *drm = nouveau_drm(&bo->device->object); + struct nouveau_device_priv *nvdev = nouveau_device(bo->device); + struct nouveau_bo_priv *nvbo = nouveau_bo(bo); + + if (nvbo->head.next) { + pthread_mutex_lock(&nvdev->lock); + if (atomic_read(&nvbo->refcnt) == 0) { + DRMLISTDEL(&nvbo->head); + /* + * This bo has to be closed with the lock held because + * gem handles are not refcounted. If a shared bo is + * closed and re-opened in another thread a race + * against DRM_IOCTL_GEM_OPEN or drmPrimeFDToHandle + * might cause the bo to be closed accidentally while + * re-importing. + */ + drmCloseBufferHandle(drm->fd, bo->handle); + } + pthread_mutex_unlock(&nvdev->lock); + } else { + drmCloseBufferHandle(drm->fd, bo->handle); + } + if (bo->map) + drm_munmap(bo->map, bo->size); + free(nvbo); +} + +drm_public 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_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; + } + + *pbo = bo; + return 0; +} + +static int +nouveau_bo_wrap_locked(struct nouveau_device *dev, uint32_t handle, + struct nouveau_bo **pbo, int name) +{ + struct nouveau_drm *drm = nouveau_drm(&dev->object); + 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) { + if (atomic_inc_return(&nvbo->refcnt) == 1) { + /* + * Uh oh, this bo is dead and someone else + * will free it, but because refcnt is + * now non-zero fortunately they won't + * call the ioctl to close the bo. + * + * Remove this bo from the list so other + * calls to nouveau_bo_wrap_locked will + * see our replacement nvbo. + */ + DRMLISTDEL(&nvbo->head); + if (!name) + name = nvbo->name; + break; + } + + *pbo = &nvbo->base; + return 0; + } + } + + ret = drmCommandWriteRead(drm->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); + nvbo->name = name; + DRMLISTADD(&nvbo->head, &nvdev->bo_list); + *pbo = &nvbo->base; + return 0; + } + + return -ENOMEM; +} + +static void +nouveau_bo_make_global(struct nouveau_bo_priv *nvbo) +{ + if (!nvbo->head.next) { + struct nouveau_device_priv *nvdev = nouveau_device(nvbo->base.device); + pthread_mutex_lock(&nvdev->lock); + if (!nvbo->head.next) + DRMLISTADD(&nvbo->head, &nvdev->bo_list); + pthread_mutex_unlock(&nvdev->lock); + } +} + +drm_public int +nouveau_bo_wrap(struct nouveau_device *dev, uint32_t handle, + struct nouveau_bo **pbo) +{ + struct nouveau_device_priv *nvdev = nouveau_device(dev); + int ret; + pthread_mutex_lock(&nvdev->lock); + ret = nouveau_bo_wrap_locked(dev, handle, pbo, 0); + pthread_mutex_unlock(&nvdev->lock); + return ret; +} + +drm_public int +nouveau_bo_name_ref(struct nouveau_device *dev, uint32_t name, + struct nouveau_bo **pbo) +{ + struct nouveau_drm *drm = nouveau_drm(&dev->object); + struct nouveau_device_priv *nvdev = nouveau_device(dev); + struct nouveau_bo_priv *nvbo; + struct drm_gem_open req = { .name = name }; + int ret; + + pthread_mutex_lock(&nvdev->lock); + DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) { + if (nvbo->name == name) { + ret = nouveau_bo_wrap_locked(dev, nvbo->base.handle, + pbo, name); + pthread_mutex_unlock(&nvdev->lock); + return ret; + } + } + + ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_OPEN, &req); + if (ret == 0) { + ret = nouveau_bo_wrap_locked(dev, req.handle, pbo, name); + } + + pthread_mutex_unlock(&nvdev->lock); + return ret; +} + +drm_public int +nouveau_bo_name_get(struct nouveau_bo *bo, uint32_t *name) +{ + struct drm_gem_flink req = { .handle = bo->handle }; + struct nouveau_drm *drm = nouveau_drm(&bo->device->object); + struct nouveau_bo_priv *nvbo = nouveau_bo(bo); + + *name = nvbo->name; + if (!*name) { + int ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_FLINK, &req); + + if (ret) { + *name = 0; + return ret; + } + nvbo->name = *name = req.name; + + nouveau_bo_make_global(nvbo); + } + return 0; +} + +drm_public 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; +} + +drm_public int +nouveau_bo_prime_handle_ref(struct nouveau_device *dev, int prime_fd, + struct nouveau_bo **bo) +{ + struct nouveau_drm *drm = nouveau_drm(&dev->object); + struct nouveau_device_priv *nvdev = nouveau_device(dev); + int ret; + unsigned int handle; + + nouveau_bo_ref(NULL, bo); + + pthread_mutex_lock(&nvdev->lock); + ret = drmPrimeFDToHandle(drm->fd, prime_fd, &handle); + if (ret == 0) { + ret = nouveau_bo_wrap_locked(dev, handle, bo, 0); + } + pthread_mutex_unlock(&nvdev->lock); + return ret; +} + +drm_public int +nouveau_bo_set_prime(struct nouveau_bo *bo, int *prime_fd) +{ + struct nouveau_drm *drm = nouveau_drm(&bo->device->object); + struct nouveau_bo_priv *nvbo = nouveau_bo(bo); + int ret; + + ret = drmPrimeHandleToFD(drm->fd, nvbo->base.handle, DRM_CLOEXEC, prime_fd); + if (ret) + return ret; + + nouveau_bo_make_global(nvbo); + return 0; +} + +drm_public int +nouveau_bo_wait(struct nouveau_bo *bo, uint32_t access, + struct nouveau_client *client) +{ + struct nouveau_drm *drm = nouveau_drm(&bo->device->object); + 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->head.next && !(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(drm->fd, DRM_NOUVEAU_GEM_CPU_PREP, + &req, sizeof(req)); + if (ret == 0) + nvbo->access = 0; + return ret; +} + +drm_public int +nouveau_bo_map(struct nouveau_bo *bo, uint32_t access, + struct nouveau_client *client) +{ + struct nouveau_drm *drm = nouveau_drm(&bo->device->object); + struct nouveau_bo_priv *nvbo = nouveau_bo(bo); + if (bo->map == NULL) { + bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, + MAP_SHARED, drm->fd, nvbo->map_handle); + if (bo->map == MAP_FAILED) { + bo->map = NULL; + return -errno; + } + } + return nouveau_bo_wait(bo, access, client); +} -- cgit v1.2.3