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gpu: nvgpu: Remove extraneous FB flush calls

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gk20a_mm_fb_flush() invoked G_ELPG_FLUSH and FB_FLUSH. Remove the
invokation of G_ELPG_FLUSH. Replace calls to gk20a_mm_fb_flush() with
gk20a_mm_l2_flush() when appropriate.

Bug 1421824

Change-Id: I02af4bdc3b7bd26d0f6a8d610f70349269775a36
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/408210
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Terje Bergstrom
2014-05-12 15:14:05 +03:00
committed by Dan Willemsen
parent 846f0c4f41
commit bcf8c6411c
2 changed files with 4 additions and 10 deletions
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12
drivers/gpu/nvgpu/gk20a/gr_gk20a.c
View File

@@ -655,8 +655,6 @@ static int gr_gk20a_commit_inst(struct channel_gk20a *c, u64 gpu_va)
gk20a_dbg_fn("");
gk20a_mm_fb_flush(c->g);
inst_ptr = c->inst_block.cpuva;
if (!inst_ptr)
return -ENOMEM;
@@ -1573,7 +1571,7 @@ static int gr_gk20a_init_golden_ctx_image(struct gk20a *g,
ctx_header_words = roundup(ctx_header_bytes, sizeof(u32));
ctx_header_words >>= 2;
gk20a_mm_fb_flush(g);
gk20a_mm_l2_flush(g, true);
for (i = 0; i < ctx_header_words; i++) {
data = gk20a_mem_rd32(ctx_ptr, i);
@@ -1634,11 +1632,9 @@ int gr_gk20a_update_smpc_ctxsw_mode(struct gk20a *g,
void *ctx_ptr = NULL;
u32 data;
/*XXX caller responsible for making sure the channel is quiesced? */
/* Channel gr_ctx buffer is gpu cacheable.
Flush and invalidate before cpu update. */
gk20a_mm_fb_flush(g);
gk20a_mm_l2_flush(g, true);
ctx_ptr = vmap(ch_ctx->gr_ctx.pages,
PAGE_ALIGN(ch_ctx->gr_ctx.size) >> PAGE_SHIFT,
@@ -1678,7 +1674,7 @@ static int gr_gk20a_load_golden_ctx_image(struct gk20a *g,
/* Channel gr_ctx buffer is gpu cacheable.
Flush and invalidate before cpu update. */
gk20a_mm_fb_flush(g);
gk20a_mm_l2_flush(g, true);
ctx_ptr = vmap(ch_ctx->gr_ctx.pages,
PAGE_ALIGN(ch_ctx->gr_ctx.size) >> PAGE_SHIFT,
@@ -6686,7 +6682,7 @@ int gr_gk20a_exec_ctx_ops(struct channel_gk20a *ch,
goto cleanup;
}
gk20a_mm_fb_flush(g);
gk20a_mm_l2_flush(g, true);
/* write to appropriate place in context image,
* first have to figure out where that really is */

2
drivers/gpu/nvgpu/gk20a/mm_gk20a.c
View File

@@ -2801,8 +2801,6 @@ int gk20a_mm_fb_flush(struct gk20a *g)
mutex_lock(&mm->l2_op_lock);
g->ops.ltc.elpg_flush(g);
/* Make sure all previous writes are committed to the L2. There's no
guarantee that writes are to DRAM. This will be a sysmembar internal
to the L2. */