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gpu: nvgpu: API to extract context id

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Add new API gr_gk20a_get_ctx_id() to get/extract
context id from GR context

Bug 200156699

Change-Id: If0e8887a9a6b139cd795bf03f5def64fd664d12b
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/927130
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2015-12-23 15:56:50 +05:30
committed by Sachin Nikam
parent 4bc0a42f32
commit b51ffba58f
4 changed files with 37 additions and 0 deletions
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25
drivers/gpu/nvgpu/gk20a/gr_gk20a.c
View File

@@ -86,6 +86,31 @@ static int gr_gk20a_init_golden_ctx_image(struct gk20a *g,
/*elcg init */
static void gr_gk20a_enable_elcg(struct gk20a *g);
int gr_gk20a_get_ctx_id(struct gk20a *g,
struct channel_gk20a *c,
u32 *ctx_id)
{
struct channel_ctx_gk20a *ch_ctx = &c->ch_ctx;
void *ctx_ptr = NULL;
/* Channel gr_ctx buffer is gpu cacheable.
Flush and invalidate before cpu update. */
g->ops.mm.l2_flush(g, true);
ctx_ptr = vmap(ch_ctx->gr_ctx->mem.pages,
PAGE_ALIGN(ch_ctx->gr_ctx->mem.size) >> PAGE_SHIFT,
0, pgprot_writecombine(PAGE_KERNEL));
if (!ctx_ptr)
return -ENOMEM;
*ctx_id = gk20a_mem_rd32(ctx_ptr +
ctxsw_prog_main_image_context_id_o(), 0);
vunmap(ctx_ptr);
return 0;
}
void gk20a_fecs_dump_falcon_stats(struct gk20a *g)
{
int i;

4
drivers/gpu/nvgpu/gk20a/gr_gk20a.h
View File

@@ -562,4 +562,8 @@ int gr_gk20a_ctx_wait_ucode(struct gk20a *g, u32 mailbox_id,
u32 mailbox_ok, u32 opc_fail,
u32 mailbox_fail, bool sleepduringwait);
int gr_gk20a_get_ctx_id(struct gk20a *g,
struct channel_gk20a *c,
u32 *ctx_id);
#endif /*__GR_GK20A_H__*/

4
drivers/gpu/nvgpu/gk20a/hw_ctxsw_prog_gk20a.h
View File

@@ -242,4 +242,8 @@ static inline u32 ctxsw_prog_main_image_misc_options_verif_features_disabled_f(v
{
return 0x0;
}
static inline u32 ctxsw_prog_main_image_context_id_o(void)
{
return 0x000000f0;
}
#endif

4
drivers/gpu/nvgpu/gm20b/hw_ctxsw_prog_gm20b.h
View File

@@ -270,4 +270,8 @@ static inline u32 ctxsw_prog_main_image_preemption_options_control_cta_enabled_f
{
return 0x1;
}
static inline u32 ctxsw_prog_main_image_context_id_o(void)
{
return 0x000000f0;
}
#endif