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Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next
Yet another backmerge to get at latest etnaviv code, which is need for Chris' drm_mm patch. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| /* | ||
| * Copyright (C) 2017 Etnaviv Project | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 as published by | ||
| * the Free Software Foundation. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
| * more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License along with | ||
| * this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| #include <drm/drm_mm.h> | ||
|
|
||
| #include "etnaviv_cmdbuf.h" | ||
| #include "etnaviv_gpu.h" | ||
| #include "etnaviv_mmu.h" | ||
|
|
||
| #define SUBALLOC_SIZE SZ_256K | ||
| #define SUBALLOC_GRANULE SZ_4K | ||
| #define SUBALLOC_GRANULES (SUBALLOC_SIZE / SUBALLOC_GRANULE) | ||
|
|
||
| struct etnaviv_cmdbuf_suballoc { | ||
| /* suballocated dma buffer properties */ | ||
| struct etnaviv_gpu *gpu; | ||
| void *vaddr; | ||
| dma_addr_t paddr; | ||
|
|
||
| /* GPU mapping */ | ||
| u32 iova; | ||
| struct drm_mm_node vram_node; /* only used on MMUv2 */ | ||
|
|
||
| /* allocation management */ | ||
| struct mutex lock; | ||
| DECLARE_BITMAP(granule_map, SUBALLOC_GRANULES); | ||
| int free_space; | ||
| wait_queue_head_t free_event; | ||
| }; | ||
|
|
||
| struct etnaviv_cmdbuf_suballoc * | ||
| etnaviv_cmdbuf_suballoc_new(struct etnaviv_gpu * gpu) | ||
| { | ||
| struct etnaviv_cmdbuf_suballoc *suballoc; | ||
| int ret; | ||
|
|
||
| suballoc = kzalloc(sizeof(*suballoc), GFP_KERNEL); | ||
| if (!suballoc) | ||
| return ERR_PTR(-ENOMEM); | ||
|
|
||
| suballoc->gpu = gpu; | ||
| mutex_init(&suballoc->lock); | ||
| init_waitqueue_head(&suballoc->free_event); | ||
|
|
||
| suballoc->vaddr = dma_alloc_wc(gpu->dev, SUBALLOC_SIZE, | ||
| &suballoc->paddr, GFP_KERNEL); | ||
| if (!suballoc->vaddr) | ||
| goto free_suballoc; | ||
|
|
||
| ret = etnaviv_iommu_get_suballoc_va(gpu, suballoc->paddr, | ||
| &suballoc->vram_node, SUBALLOC_SIZE, | ||
| &suballoc->iova); | ||
| if (ret) | ||
| goto free_dma; | ||
|
|
||
| return suballoc; | ||
|
|
||
| free_dma: | ||
| dma_free_wc(gpu->dev, SUBALLOC_SIZE, suballoc->vaddr, suballoc->paddr); | ||
| free_suballoc: | ||
| kfree(suballoc); | ||
|
|
||
| return NULL; | ||
| } | ||
|
|
||
| void etnaviv_cmdbuf_suballoc_destroy(struct etnaviv_cmdbuf_suballoc *suballoc) | ||
| { | ||
| etnaviv_iommu_put_suballoc_va(suballoc->gpu, &suballoc->vram_node, | ||
| SUBALLOC_SIZE, suballoc->iova); | ||
| dma_free_wc(suballoc->gpu->dev, SUBALLOC_SIZE, suballoc->vaddr, | ||
| suballoc->paddr); | ||
| kfree(suballoc); | ||
| } | ||
|
|
||
| struct etnaviv_cmdbuf * | ||
| etnaviv_cmdbuf_new(struct etnaviv_cmdbuf_suballoc *suballoc, u32 size, | ||
| size_t nr_bos) | ||
| { | ||
| struct etnaviv_cmdbuf *cmdbuf; | ||
| size_t sz = size_vstruct(nr_bos, sizeof(cmdbuf->bo_map[0]), | ||
| sizeof(*cmdbuf)); | ||
| int granule_offs, order, ret; | ||
|
|
||
| cmdbuf = kzalloc(sz, GFP_KERNEL); | ||
| if (!cmdbuf) | ||
| return NULL; | ||
|
|
||
| cmdbuf->suballoc = suballoc; | ||
| cmdbuf->size = size; | ||
|
|
||
| order = order_base_2(ALIGN(size, SUBALLOC_GRANULE) / SUBALLOC_GRANULE); | ||
| retry: | ||
| mutex_lock(&suballoc->lock); | ||
| granule_offs = bitmap_find_free_region(suballoc->granule_map, | ||
| SUBALLOC_GRANULES, order); | ||
| if (granule_offs < 0) { | ||
| suballoc->free_space = 0; | ||
| mutex_unlock(&suballoc->lock); | ||
| ret = wait_event_interruptible_timeout(suballoc->free_event, | ||
| suballoc->free_space, | ||
| msecs_to_jiffies(10 * 1000)); | ||
| if (!ret) { | ||
| dev_err(suballoc->gpu->dev, | ||
| "Timeout waiting for cmdbuf space\n"); | ||
| return NULL; | ||
| } | ||
| goto retry; | ||
| } | ||
| mutex_unlock(&suballoc->lock); | ||
| cmdbuf->suballoc_offset = granule_offs * SUBALLOC_GRANULE; | ||
| cmdbuf->vaddr = suballoc->vaddr + cmdbuf->suballoc_offset; | ||
|
|
||
| return cmdbuf; | ||
| } | ||
|
|
||
| void etnaviv_cmdbuf_free(struct etnaviv_cmdbuf *cmdbuf) | ||
| { | ||
| struct etnaviv_cmdbuf_suballoc *suballoc = cmdbuf->suballoc; | ||
| int order = order_base_2(ALIGN(cmdbuf->size, SUBALLOC_GRANULE) / | ||
| SUBALLOC_GRANULE); | ||
|
|
||
| mutex_lock(&suballoc->lock); | ||
| bitmap_release_region(suballoc->granule_map, | ||
| cmdbuf->suballoc_offset / SUBALLOC_GRANULE, | ||
| order); | ||
| suballoc->free_space = 1; | ||
| mutex_unlock(&suballoc->lock); | ||
| wake_up_all(&suballoc->free_event); | ||
| kfree(cmdbuf); | ||
| } | ||
|
|
||
| u32 etnaviv_cmdbuf_get_va(struct etnaviv_cmdbuf *buf) | ||
| { | ||
| return buf->suballoc->iova + buf->suballoc_offset; | ||
| } | ||
|
|
||
| dma_addr_t etnaviv_cmdbuf_get_pa(struct etnaviv_cmdbuf *buf) | ||
| { | ||
| return buf->suballoc->paddr + buf->suballoc_offset; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| /* | ||
| * Copyright (C) 2017 Etnaviv Project | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 as published by | ||
| * the Free Software Foundation. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
| * more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License along with | ||
| * this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| #ifndef __ETNAVIV_CMDBUF_H__ | ||
| #define __ETNAVIV_CMDBUF_H__ | ||
|
|
||
| #include <linux/types.h> | ||
|
|
||
| struct etnaviv_gpu; | ||
| struct etnaviv_cmdbuf_suballoc; | ||
|
|
||
| struct etnaviv_cmdbuf { | ||
| /* suballocator this cmdbuf is allocated from */ | ||
| struct etnaviv_cmdbuf_suballoc *suballoc; | ||
| /* user context key, must be unique between all active users */ | ||
| struct etnaviv_file_private *ctx; | ||
| /* cmdbuf properties */ | ||
| int suballoc_offset; | ||
| void *vaddr; | ||
| u32 size; | ||
| u32 user_size; | ||
| /* fence after which this buffer is to be disposed */ | ||
| struct dma_fence *fence; | ||
| /* target exec state */ | ||
| u32 exec_state; | ||
| /* per GPU in-flight list */ | ||
| struct list_head node; | ||
| /* BOs attached to this command buffer */ | ||
| unsigned int nr_bos; | ||
| struct etnaviv_vram_mapping *bo_map[0]; | ||
| }; | ||
|
|
||
| struct etnaviv_cmdbuf_suballoc * | ||
| etnaviv_cmdbuf_suballoc_new(struct etnaviv_gpu * gpu); | ||
| void etnaviv_cmdbuf_suballoc_destroy(struct etnaviv_cmdbuf_suballoc *suballoc); | ||
|
|
||
| struct etnaviv_cmdbuf * | ||
| etnaviv_cmdbuf_new(struct etnaviv_cmdbuf_suballoc *suballoc, u32 size, | ||
| size_t nr_bos); | ||
| void etnaviv_cmdbuf_free(struct etnaviv_cmdbuf *cmdbuf); | ||
|
|
||
| u32 etnaviv_cmdbuf_get_va(struct etnaviv_cmdbuf *buf); | ||
| dma_addr_t etnaviv_cmdbuf_get_pa(struct etnaviv_cmdbuf *buf); | ||
|
|
||
| #endif /* __ETNAVIV_CMDBUF_H__ */ |
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