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gpu: nvgpu: Add interface for privileged channel allocation

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Added interface for privileged channel allocation to excute
the privileged method  (ex. CE phys mode transfer).

JIRA DNVGPU-53

Change-Id: I07f9181720b14345cf5890919c2818dfcf505d86
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: http://git-master/r/1169315
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Lakshmanan M
2016-06-22 15:57:16 +05:30
committed by Terje Bergstrom
parent fa4b21f604
commit 2c04ddcdf6
2 changed files with 31 additions and 4 deletions
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27
drivers/gpu/nvgpu/gk20a/channel_gk20a.c
View File

@@ -244,6 +244,18 @@ u32 channel_gk20a_pbdma_acquire_val(struct channel_gk20a *c)
return val;
}
void gk20a_channel_setup_ramfc_for_privileged_channel(struct channel_gk20a *c)
{
struct gk20a *g = c->g;
struct mem_desc *mem = &c->inst_block;
gk20a_dbg_info("channel %d : set ramfc privileged_channel", c->hw_chid);
/* Enable HCE priv mode for phys mode transfer */
gk20a_mem_wr32(g, mem, ram_fc_hce_ctrl_w(),
pbdma_hce_ctrl_hce_priv_mode_yes_f());
}
int channel_gk20a_setup_ramfc(struct channel_gk20a *c,
u64 gpfifo_base, u32 gpfifo_entries, u32 flags)
{
@@ -300,6 +312,9 @@ int channel_gk20a_setup_ramfc(struct channel_gk20a *c,
gk20a_mem_wr32(g, mem, ram_fc_chid_w(), ram_fc_chid_id_f(c->hw_chid));
if (c->is_privileged_channel)
gk20a_channel_setup_ramfc_for_privileged_channel(c);
return channel_gk20a_commit_userd(c);
}
@@ -1093,7 +1108,7 @@ struct channel_gk20a *gk20a_open_new_channel_with_cb(struct gk20a *g,
void (*update_fn)(struct channel_gk20a *, void *),
void *update_fn_data)
{
struct channel_gk20a *ch = gk20a_open_new_channel(g, -1);
struct channel_gk20a *ch = gk20a_open_new_channel(g, -1, false);
if (ch) {
spin_lock(&ch->update_fn_lock);
@@ -1105,7 +1120,9 @@ struct channel_gk20a *gk20a_open_new_channel_with_cb(struct gk20a *g,
return ch;
}
struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g, s32 runlist_id)
struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g,
s32 runlist_id,
bool is_privileged_channel)
{
struct fifo_gk20a *f = &g->fifo;
struct channel_gk20a *ch;
@@ -1132,6 +1149,9 @@ struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g, s32 runlist_id)
/* Runlist for the channel */
ch->runlist_id = runlist_id;
/* Channel privilege level */
ch->is_privileged_channel = is_privileged_channel;
if (g->ops.fifo.alloc_inst(g, ch)) {
ch->g = NULL;
free_channel(f, ch);
@@ -1198,7 +1218,8 @@ static int __gk20a_channel_open(struct gk20a *g, struct file *filp, s32 runlist_
gk20a_err(dev_from_gk20a(g), "failed to power on, %d", err);
return err;
}
ch = gk20a_open_new_channel(g, runlist_id);
/* All the user space channel should be non privilege */
ch = gk20a_open_new_channel(g, runlist_id, false);
gk20a_idle(g->dev);
if (!ch) {
gk20a_err(dev_from_gk20a(g),

8
drivers/gpu/nvgpu/gk20a/channel_gk20a.h
View File

@@ -200,6 +200,8 @@ struct channel_gk20a {
u32 interleave_level;
u32 runlist_id;
bool is_privileged_channel;
};
static inline bool gk20a_channel_as_bound(struct channel_gk20a *ch)
@@ -255,7 +257,9 @@ void _gk20a_channel_put(struct channel_gk20a *ch, const char *caller);
int gk20a_wait_channel_idle(struct channel_gk20a *ch);
/* runlist_id -1 is synonym for ENGINE_GR_GK20A runlist id */
struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g, s32 runlist_id);
struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g,
s32 runlist_id,
bool is_privileged_channel);
struct channel_gk20a *gk20a_open_new_channel_with_cb(struct gk20a *g,
void (*update_fn)(struct channel_gk20a *, void *),
void *update_fn_data);
@@ -291,4 +295,6 @@ int gk20a_channel_set_timeslice(struct channel_gk20a *ch, u32 timeslice);
void gk20a_channel_event_id_post_event(struct channel_gk20a *ch,
int event_id);
void gk20a_channel_setup_ramfc_for_privileged_channel(struct channel_gk20a *c);
#endif /* CHANNEL_GK20A_H */