[PATCH 5/8] drm/amdgpu: reroute VMC and UMD to IH ring 1 for arcturus

[Alex Sierra]

[Why]
Same reason as commit "reroute VMC and UMD to IH ring 1" for vega10.
Due Page faults can easily overwhelm the interrupt handler.
So to make sure that we never lose valuable interrupts on the primary ring
we re-route page faults to IH ring 1.
It also facilitates the recovery page process, since it's already
running from a process context.

[How]
Setting IH_CLIENT_CFG_DATA for VMC and UMD IH clients.

Change-Id: I189a6b35c9f5bd55d001fa9672d7d08ba4e8591e
Signed-off-by: Alex Sierra <alex.sierra at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/arcturus_ih.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/arcturus_ih.c b/drivers/gpu/drm/amd/amdgpu/arcturus_ih.c
index b687fcc4c9b6..73a00e752ead 100644
--- a/drivers/gpu/drm/amd/amdgpu/arcturus_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/arcturus_ih.c
@@ -205,6 +205,24 @@ static uint32_t arcturus_ih_doorbell_rptr(struct amdgpu_ih_ring *ih)
 	return ih_doorbell_rtpr;
 }
 
+static void arcturus_ih_reroute_ih(struct amdgpu_device *adev)
+{
+	uint32_t tmp;
+
+	/* Reroute to IH ring 1 for VMC */
+	WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x12);
+	tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
+	tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, CLIENT_TYPE, 1);
+	tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
+	WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
+
+	/* Reroute IH ring 1 for UMC */
+	WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_INDEX, 0x1B);
+	tmp = RREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA);
+	tmp = REG_SET_FIELD(tmp, IH_CLIENT_CFG_DATA, RING_ID, 1);
+	WREG32_SOC15(OSSSYS, 0, mmIH_CLIENT_CFG_DATA, tmp);
+}
+
 /**
  * arcturus_ih_irq_init - init and enable the interrupt ring
  *
@@ -246,6 +264,8 @@ static int arcturus_ih_irq_init(struct amdgpu_device *adev)
 		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
 	}
 
+	arcturus_ih_reroute_ih(adev);
+
 	if (adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) {
 		ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
 		if (adev->irq.ih.use_bus_addr) {
-- 
2.17.1