diff options
| author | Joshua Bakita <bakitajoshua@gmail.com> | 2024-09-25 16:09:09 -0400 |
|---|---|---|
| committer | Joshua Bakita <bakitajoshua@gmail.com> | 2024-09-25 16:09:09 -0400 |
| commit | f347fde22f1297e4f022600d201780d5ead78114 (patch) | |
| tree | 76be305d6187003a1e0486ff6e91efb1062ae118 /include/os/linux/dmabuf.c | |
| parent | 8340d234d78a7d0f46c11a584de538148b78b7cb (diff) | |
Delete no-longer-needed nvgpu headers
The dependency on these was removed in commit 8340d234.
Diffstat (limited to 'include/os/linux/dmabuf.c')
| -rw-r--r-- | include/os/linux/dmabuf.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/include/os/linux/dmabuf.c b/include/os/linux/dmabuf.c deleted file mode 100644 index e8e3313..0000000 --- a/include/os/linux/dmabuf.c +++ /dev/null | |||
| @@ -1,219 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved. | ||
| 3 | * | ||
| 4 | * This program is free software; you can redistribute it and/or modify it | ||
| 5 | * under the terms and conditions of the GNU General Public License, | ||
| 6 | * version 2, as published by the Free Software Foundation. | ||
| 7 | * | ||
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
| 11 | * more details. | ||
| 12 | * | ||
| 13 | * You should have received a copy of the GNU General Public License | ||
| 14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| 15 | */ | ||
| 16 | |||
| 17 | #include <linux/device.h> | ||
| 18 | #include <linux/dma-buf.h> | ||
| 19 | #include <linux/scatterlist.h> | ||
| 20 | |||
| 21 | #include <nvgpu/comptags.h> | ||
| 22 | #include <nvgpu/enabled.h> | ||
| 23 | #include <nvgpu/gk20a.h> | ||
| 24 | |||
| 25 | #include <nvgpu/linux/vm.h> | ||
| 26 | |||
| 27 | #include "gk20a/fence_gk20a.h" | ||
| 28 | |||
| 29 | #include "platform_gk20a.h" | ||
| 30 | #include "dmabuf.h" | ||
| 31 | #include "os_linux.h" | ||
| 32 | #include "dmabuf_vidmem.h" | ||
| 33 | |||
| 34 | static void gk20a_mm_delete_priv(void *_priv) | ||
| 35 | { | ||
| 36 | struct gk20a_buffer_state *s, *s_tmp; | ||
| 37 | struct gk20a_dmabuf_priv *priv = _priv; | ||
| 38 | struct gk20a *g; | ||
| 39 | |||
| 40 | if (!priv) | ||
| 41 | return; | ||
| 42 | |||
| 43 | g = priv->g; | ||
| 44 | |||
| 45 | if (priv->comptags.allocated && priv->comptags.lines) { | ||
| 46 | BUG_ON(!priv->comptag_allocator); | ||
| 47 | gk20a_comptaglines_free(priv->comptag_allocator, | ||
| 48 | priv->comptags.offset, | ||
| 49 | priv->comptags.lines); | ||
| 50 | } | ||
| 51 | |||
| 52 | /* Free buffer states */ | ||
| 53 | nvgpu_list_for_each_entry_safe(s, s_tmp, &priv->states, | ||
| 54 | gk20a_buffer_state, list) { | ||
| 55 | gk20a_fence_put(s->fence); | ||
| 56 | nvgpu_list_del(&s->list); | ||
| 57 | nvgpu_kfree(g, s); | ||
| 58 | } | ||
| 59 | |||
| 60 | nvgpu_kfree(g, priv); | ||
| 61 | } | ||
| 62 | |||
| 63 | enum nvgpu_aperture gk20a_dmabuf_aperture(struct gk20a *g, | ||
| 64 | struct dma_buf *dmabuf) | ||
| 65 | { | ||
| 66 | struct gk20a *buf_owner = nvgpu_vidmem_buf_owner(dmabuf); | ||
| 67 | bool unified_memory = nvgpu_is_enabled(g, NVGPU_MM_UNIFIED_MEMORY); | ||
| 68 | |||
| 69 | if (buf_owner == NULL) { | ||
| 70 | /* Not nvgpu-allocated, assume system memory */ | ||
| 71 | return APERTURE_SYSMEM; | ||
| 72 | } else if (WARN_ON(buf_owner == g && unified_memory)) { | ||
| 73 | /* Looks like our video memory, but this gpu doesn't support | ||
| 74 | * it. Warn about a bug and bail out */ | ||
| 75 | nvgpu_warn(g, | ||
| 76 | "dmabuf is our vidmem but we don't have local vidmem"); | ||
| 77 | return APERTURE_INVALID; | ||
| 78 | } else if (buf_owner != g) { | ||
| 79 | /* Someone else's vidmem */ | ||
| 80 | return APERTURE_INVALID; | ||
| 81 | } else { | ||
| 82 | /* Yay, buf_owner == g */ | ||
| 83 | return APERTURE_VIDMEM; | ||
| 84 | } | ||
| 85 | } | ||
| 86 | |||
| 87 | struct sg_table *gk20a_mm_pin(struct device *dev, struct dma_buf *dmabuf, | ||
| 88 | struct dma_buf_attachment **attachment) | ||
| 89 | { | ||
| 90 | struct gk20a_dmabuf_priv *priv; | ||
| 91 | |||
| 92 | priv = dma_buf_get_drvdata(dmabuf, dev); | ||
| 93 | if (WARN_ON(!priv)) | ||
| 94 | return ERR_PTR(-EINVAL); | ||
| 95 | |||
| 96 | nvgpu_mutex_acquire(&priv->lock); | ||
| 97 | |||
| 98 | if (priv->pin_count == 0) { | ||
| 99 | priv->attach = dma_buf_attach(dmabuf, dev); | ||
| 100 | if (IS_ERR(priv->attach)) { | ||
| 101 | nvgpu_mutex_release(&priv->lock); | ||
| 102 | return (struct sg_table *)priv->attach; | ||
| 103 | } | ||
| 104 | |||
| 105 | priv->sgt = dma_buf_map_attachment(priv->attach, | ||
| 106 | DMA_BIDIRECTIONAL); | ||
| 107 | if (IS_ERR(priv->sgt)) { | ||
| 108 | dma_buf_detach(dmabuf, priv->attach); | ||
| 109 | nvgpu_mutex_release(&priv->lock); | ||
| 110 | return priv->sgt; | ||
| 111 | } | ||
| 112 | } | ||
| 113 | |||
| 114 | priv->pin_count++; | ||
| 115 | nvgpu_mutex_release(&priv->lock); | ||
| 116 | *attachment = priv->attach; | ||
| 117 | return priv->sgt; | ||
| 118 | } | ||
| 119 | |||
| 120 | void gk20a_mm_unpin(struct device *dev, struct dma_buf *dmabuf, | ||
| 121 | struct dma_buf_attachment *attachment, | ||
| 122 | struct sg_table *sgt) | ||
| 123 | { | ||
| 124 | struct gk20a_dmabuf_priv *priv = dma_buf_get_drvdata(dmabuf, dev); | ||
| 125 | dma_addr_t dma_addr; | ||
| 126 | |||
| 127 | if (IS_ERR(priv) || !priv) | ||
| 128 | return; | ||
| 129 | |||
| 130 | nvgpu_mutex_acquire(&priv->lock); | ||
| 131 | WARN_ON(priv->sgt != sgt); | ||
| 132 | WARN_ON(priv->attach != attachment); | ||
| 133 | priv->pin_count--; | ||
| 134 | WARN_ON(priv->pin_count < 0); | ||
| 135 | dma_addr = sg_dma_address(priv->sgt->sgl); | ||
| 136 | if (priv->pin_count == 0) { | ||
| 137 | dma_buf_unmap_attachment(priv->attach, priv->sgt, | ||
| 138 | DMA_BIDIRECTIONAL); | ||
| 139 | dma_buf_detach(dmabuf, priv->attach); | ||
| 140 | } | ||
| 141 | nvgpu_mutex_release(&priv->lock); | ||
| 142 | } | ||
| 143 | |||
| 144 | int gk20a_dmabuf_alloc_drvdata(struct dma_buf *dmabuf, struct device *dev) | ||
| 145 | { | ||
| 146 | struct gk20a *g = gk20a_get_platform(dev)->g; | ||
| 147 | struct gk20a_dmabuf_priv *priv; | ||
| 148 | |||
| 149 | priv = dma_buf_get_drvdata(dmabuf, dev); | ||
| 150 | if (likely(priv)) | ||
| 151 | return 0; | ||
| 152 | |||
| 153 | nvgpu_mutex_acquire(&g->mm.priv_lock); | ||
| 154 | priv = dma_buf_get_drvdata(dmabuf, dev); | ||
| 155 | if (priv) | ||
| 156 | goto priv_exist_or_err; | ||
| 157 | |||
| 158 | priv = nvgpu_kzalloc(g, sizeof(*priv)); | ||
| 159 | if (!priv) { | ||
| 160 | priv = ERR_PTR(-ENOMEM); | ||
| 161 | goto priv_exist_or_err; | ||
| 162 | } | ||
| 163 | |||
| 164 | nvgpu_mutex_init(&priv->lock); | ||
| 165 | nvgpu_init_list_node(&priv->states); | ||
| 166 | priv->g = g; | ||
| 167 | dma_buf_set_drvdata(dmabuf, dev, priv, gk20a_mm_delete_priv); | ||
| 168 | |||
| 169 | priv_exist_or_err: | ||
| 170 | nvgpu_mutex_release(&g->mm.priv_lock); | ||
| 171 | if (IS_ERR(priv)) | ||
| 172 | return -ENOMEM; | ||
| 173 | |||
| 174 | return 0; | ||
| 175 | } | ||
| 176 | |||
| 177 | int gk20a_dmabuf_get_state(struct dma_buf *dmabuf, struct gk20a *g, | ||
| 178 | u64 offset, struct gk20a_buffer_state **state) | ||
| 179 | { | ||
| 180 | int err = 0; | ||
| 181 | struct gk20a_dmabuf_priv *priv; | ||
| 182 | struct gk20a_buffer_state *s; | ||
| 183 | struct device *dev = dev_from_gk20a(g); | ||
| 184 | |||
| 185 | if (WARN_ON(offset >= (u64)dmabuf->size)) | ||
| 186 | return -EINVAL; | ||
| 187 | |||
| 188 | err = gk20a_dmabuf_alloc_drvdata(dmabuf, dev); | ||
| 189 | if (err) | ||
| 190 | return err; | ||
| 191 | |||
| 192 | priv = dma_buf_get_drvdata(dmabuf, dev); | ||
| 193 | if (WARN_ON(!priv)) | ||
| 194 | return -ENOSYS; | ||
| 195 | |||
| 196 | nvgpu_mutex_acquire(&priv->lock); | ||
| 197 | |||
| 198 | nvgpu_list_for_each_entry(s, &priv->states, gk20a_buffer_state, list) | ||
| 199 | if (s->offset == offset) | ||
| 200 | goto out; | ||
| 201 | |||
| 202 | /* State not found, create state. */ | ||
| 203 | s = nvgpu_kzalloc(g, sizeof(*s)); | ||
| 204 | if (!s) { | ||
| 205 | err = -ENOMEM; | ||
| 206 | goto out; | ||
| 207 | } | ||
| 208 | |||
| 209 | s->offset = offset; | ||
| 210 | nvgpu_init_list_node(&s->list); | ||
| 211 | nvgpu_mutex_init(&s->lock); | ||
| 212 | nvgpu_list_add_tail(&s->list, &priv->states); | ||
| 213 | |||
| 214 | out: | ||
| 215 | nvgpu_mutex_release(&priv->lock); | ||
| 216 | if (!err) | ||
| 217 | *state = s; | ||
| 218 | return err; | ||
| 219 | } | ||
