From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/nouveau/nouveau_sgdma.c | 90 +++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nouveau_sgdma.c (limited to 'drivers/gpu/drm/nouveau/nouveau_sgdma.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c new file mode 100644 index 000000000..85c03c832 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: MIT +#include +#include + +#include "nouveau_drv.h" +#include "nouveau_mem.h" +#include "nouveau_ttm.h" +#include "nouveau_bo.h" + +struct nouveau_sgdma_be { + /* this has to be the first field so populate/unpopulated in + * nouve_bo.c works properly, otherwise have to move them here + */ + struct ttm_tt ttm; + struct nouveau_mem *mem; +}; + +void +nouveau_sgdma_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) +{ + struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm; + + if (ttm) { + ttm_tt_fini(&nvbe->ttm); + kfree(nvbe); + } +} + +int +nouveau_sgdma_bind(struct ttm_device *bdev, struct ttm_tt *ttm, struct ttm_resource *reg) +{ + struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm; + struct nouveau_drm *drm = nouveau_bdev(bdev); + struct nouveau_mem *mem = nouveau_mem(reg); + int ret; + + if (nvbe->mem) + return 0; + + ret = nouveau_mem_host(reg, &nvbe->ttm); + if (ret) + return ret; + + if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) { + ret = nouveau_mem_map(mem, &mem->cli->vmm.vmm, &mem->vma[0]); + if (ret) { + nouveau_mem_fini(mem); + return ret; + } + } + + nvbe->mem = mem; + return 0; +} + +void +nouveau_sgdma_unbind(struct ttm_device *bdev, struct ttm_tt *ttm) +{ + struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm; + if (nvbe->mem) { + nouveau_mem_fini(nvbe->mem); + nvbe->mem = NULL; + } +} + +struct ttm_tt * +nouveau_sgdma_create_ttm(struct ttm_buffer_object *bo, uint32_t page_flags) +{ + struct nouveau_drm *drm = nouveau_bdev(bo->bdev); + struct nouveau_bo *nvbo = nouveau_bo(bo); + struct nouveau_sgdma_be *nvbe; + enum ttm_caching caching; + + if (nvbo->force_coherent) + caching = ttm_uncached; + else if (drm->agp.bridge) + caching = ttm_write_combined; + else + caching = ttm_cached; + + nvbe = kzalloc(sizeof(*nvbe), GFP_KERNEL); + if (!nvbe) + return NULL; + + if (ttm_sg_tt_init(&nvbe->ttm, bo, page_flags, caching)) { + kfree(nvbe); + return NULL; + } + return &nvbe->ttm; +} -- cgit v1.2.3