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drm/amdgpu: Add software ring callbacks for gfx9 (v8)

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Set ring functions with software ring callbacks on gfx9.

The software ring could be tested by debugfs_test_ib case.

v2: Set sw_ring 2 to enable software ring by default.
v3: Remove the parameter for software ring enablement.
v4: Use amdgpu_ring_init/fini for software rings.
v5: Update for code format. Fix conflict.
v6: Remove unnecessary checks and enable software ring on gfx9 by default.
v7: Use static array for software ring names and priorities.
v8: Stop creating software rings if no gfx ring existed.

Cc: Christian Koenig <Christian.Koenig@amd.com>
Cc: Luben Tuikov <Luben.Tuikov@amd.com>
Cc: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Jiadong.Zhu <Jiadong.Zhu@amd.com>
Acked-by: Luben Tuikov <luben.tuikov@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jiadong.Zhu
2022-09-07 10:03:10 +08:00
committed by Alex Deucher
parent ded946f3f6
commit 0c97a19aa9
5 changed files with 136 additions and 1 deletions
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20
drivers/gpu/drm/amd/amdgpu/amdgpu_ring_mux.c
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@@ -29,6 +29,14 @@
#define AMDGPU_MUX_RESUBMIT_JIFFIES_TIMEOUT (HZ / 2)
static const struct ring_info {
unsigned int hw_pio;
const char *ring_name;
} sw_ring_info[] = {
{ AMDGPU_RING_PRIO_DEFAULT, "gfx_low"},
{ AMDGPU_RING_PRIO_2, "gfx_high"},
};
int amdgpu_ring_mux_init(struct amdgpu_ring_mux *mux, struct amdgpu_ring *ring,
unsigned int entry_size)
{
@@ -219,3 +227,15 @@ void amdgpu_sw_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
{
WARN_ON(!ring->is_sw_ring);
}
const char *amdgpu_sw_ring_name(int idx)
{
return idx < ARRAY_SIZE(sw_ring_info) ?
sw_ring_info[idx].ring_name : NULL;
}
unsigned int amdgpu_sw_ring_priority(int idx)
{
return idx < ARRAY_SIZE(sw_ring_info) ?
sw_ring_info[idx].hw_pio : AMDGPU_RING_PRIO_DEFAULT;
}