Re: [PATCH 1/4] drm/amdgpu: enable IH ring 1 and ring 2 for navi

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Patches 1-3 are

Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>

See my separate reply to patch 4.

Thanks,
  Felix

On 2020-03-24 17:57, Alex Sierra wrote:

Support added into IH to enable ring1 and ring2 for navi10_ih.

Signed-off-by: Alex Sierra <alex.sierra@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 205 +++++++++++++++++++++++--
  1 file changed, 189 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
index e08245a446fc..0c0ba572d7a3 100644
--- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
@@ -51,6 +51,22 @@ static void navi10_ih_enable_interrupts(struct amdgpu_device *adev)
  	ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, ENABLE_INTR, 1);
  	WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
  	adev->irq.ih.enabled = true;
+
+	if (adev->irq.ih1.ring_size) {
+		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
+					   RB_ENABLE, 1);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
+		adev->irq.ih1.enabled = true;
+	}
+
+	if (adev->irq.ih2.ring_size) {
+		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
+					   RB_ENABLE, 1);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
+		adev->irq.ih2.enabled = true;
+	}
  }
/** 
@@ -72,6 +88,31 @@ static void navi10_ih_disable_interrupts(struct amdgpu_device *adev)
  	WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0);
  	adev->irq.ih.enabled = false;
  	adev->irq.ih.rptr = 0;
+
+	if (adev->irq.ih1.ring_size) {
+		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING1,
+					   RB_ENABLE, 0);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
+		/* set rptr, wptr to 0 */
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, 0);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING1, 0);
+		adev->irq.ih1.enabled = false;
+		adev->irq.ih1.rptr = 0;
+	}
+
+	if (adev->irq.ih2.ring_size) {
+		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL_RING2,
+					   RB_ENABLE, 0);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
+		/* set rptr, wptr to 0 */
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, 0);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING2, 0);
+		adev->irq.ih2.enabled = false;
+		adev->irq.ih2.rptr = 0;
+	}
+
  }
static uint32_t navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl) 
@@ -97,6 +138,25 @@ static uint32_t navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl
  	return ih_rb_cntl;
  }
+static uint32_t navi10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih) 
+{
+	u32 ih_doorbell_rtpr = 0;
+
+	if (ih->use_doorbell) {
+		ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
+						 IH_DOORBELL_RPTR, OFFSET,
+						 ih->doorbell_index);
+		ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
+						 IH_DOORBELL_RPTR,
+						 ENABLE, 1);
+	} else {
+		ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
+						 IH_DOORBELL_RPTR,
+						 ENABLE, 0);
+	}
+	return ih_doorbell_rtpr;
+}
+
  /**
   * navi10_ih_irq_init - init and enable the interrupt ring
   *
@@ -111,7 +171,7 @@ static uint32_t navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl
  static int navi10_ih_irq_init(struct amdgpu_device *adev)
  {
  	struct amdgpu_ih_ring *ih = &adev->irq.ih;
-	u32 ih_rb_cntl, ih_doorbell_rtpr, ih_chicken;
+	u32 ih_rb_cntl, ih_chicken;
  	u32 tmp;
/* disable irqs */ 
@@ -149,22 +209,52 @@ static int navi10_ih_irq_init(struct amdgpu_device *adev)
  	WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, 0);
  	WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR, 0);
- ih_doorbell_rtpr = RREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR); 
-	if (ih->use_doorbell) {
-		ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
-						 IH_DOORBELL_RPTR, OFFSET,
-						 ih->doorbell_index);
-		ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
-						 IH_DOORBELL_RPTR, ENABLE, 1);
-	} else {
-		ih_doorbell_rtpr = REG_SET_FIELD(ih_doorbell_rtpr,
-						 IH_DOORBELL_RPTR, ENABLE, 0);
-	}
-	WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR, ih_doorbell_rtpr);
+	WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR,
+			navi10_ih_doorbell_rptr(ih));
adev->nbio.funcs->ih_doorbell_range(adev, ih->use_doorbell, 
  					    ih->doorbell_index);
+ ih = &adev->irq.ih1; 
+	if (ih->ring_size) {
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_RING1, ih->gpu_addr >> 8);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI_RING1,
+			     (ih->gpu_addr >> 40) & 0xff);
+
+		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1);
+		ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
+					   WPTR_OVERFLOW_ENABLE, 0);
+		ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL,
+					   RB_FULL_DRAIN_ENABLE, 1);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING1, ih_rb_cntl);
+		/* set rptr, wptr to 0 */
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING1, 0);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, 0);
+
+		WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING1,
+				navi10_ih_doorbell_rptr(ih));
+	}
+
+	ih = &adev->irq.ih2;
+	if (ih->ring_size) {
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_RING2, ih->gpu_addr >> 8);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_BASE_HI_RING2,
+			     (ih->gpu_addr >> 40) & 0xff);
+
+		ih_rb_cntl = RREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2);
+		ih_rb_cntl = navi10_ih_rb_cntl(ih, ih_rb_cntl);
+
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL_RING2, ih_rb_cntl);
+		/* set rptr, wptr to 0 */
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_RING2, 0);
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, 0);
+
+		WREG32_SOC15(OSSSYS, 0, mmIH_DOORBELL_RPTR_RING2,
+			     navi10_ih_doorbell_rptr(ih));
+	}
+
+
  	tmp = RREG32_SOC15(OSSSYS, 0, mmIH_STORM_CLIENT_LIST_CNTL);
  	tmp = REG_SET_FIELD(tmp, IH_STORM_CLIENT_LIST_CNTL,
  			    CLIENT18_IS_STORM_CLIENT, 1);
@@ -217,7 +307,15 @@ static u32 navi10_ih_get_wptr(struct amdgpu_device *adev,
  	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
  		goto out;
- reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR); 
+	if (ih == &adev->irq.ih)
+		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR);
+	else if (ih == &adev->irq.ih1)
+		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING1);
+	else if (ih == &adev->irq.ih2)
+		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_WPTR_RING2);
+	else
+		BUG();
+
  	wptr = RREG32_NO_KIQ(reg);
  	if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW))
  		goto out;
@@ -233,7 +331,15 @@ static u32 navi10_ih_get_wptr(struct amdgpu_device *adev,
  		 wptr, ih->rptr, tmp);
  	ih->rptr = tmp;
- reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL); 
+	if (ih == &adev->irq.ih)
+		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL);
+	else if (ih == &adev->irq.ih1)
+		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING1);
+	else if (ih == &adev->irq.ih2)
+		reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_CNTL_RING2);
+	else
+		BUG();
+
  	tmp = RREG32_NO_KIQ(reg);
  	tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
  	WREG32_NO_KIQ(reg, tmp);
@@ -333,8 +439,52 @@ static void navi10_ih_set_rptr(struct amdgpu_device *adev,
if (amdgpu_sriov_vf(adev)) 
  			navi10_ih_irq_rearm(adev, ih);
-	} else
+	} else if (ih == &adev->irq.ih) {
  		WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, ih->rptr);
+	} else if (ih == &adev->irq.ih1) {
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING1, ih->rptr);
+	} else if (ih == &adev->irq.ih2) {
+		WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR_RING2, ih->rptr);
+	}
+}
+
+/**
+ * navi10_ih_self_irq - dispatch work for ring 1 and 2
+ *
+ * @adev: amdgpu_device pointer
+ * @source: irq source
+ * @entry: IV with WPTR update
+ *
+ * Update the WPTR from the IV and schedule work to handle the entries.
+ */
+static int navi10_ih_self_irq(struct amdgpu_device *adev,
+			      struct amdgpu_irq_src *source,
+			      struct amdgpu_iv_entry *entry)
+{
+	uint32_t wptr = cpu_to_le32(entry->src_data[0]);
+
+	switch (entry->ring_id) {
+	case 1:
+		*adev->irq.ih1.wptr_cpu = wptr;
+		schedule_work(&adev->irq.ih1_work);
+		break;
+	case 2:
+		*adev->irq.ih2.wptr_cpu = wptr;
+		schedule_work(&adev->irq.ih2_work);
+		break;
+	default: break;
+	}
+	return 0;
+}
+
+static const struct amdgpu_irq_src_funcs navi10_ih_self_irq_funcs = {
+	.process = navi10_ih_self_irq,
+};
+
+static void navi10_ih_set_self_irq_funcs(struct amdgpu_device *adev)
+{
+	adev->irq.self_irq.num_types = 0;
+	adev->irq.self_irq.funcs = &navi10_ih_self_irq_funcs;
  }
static int navi10_ih_early_init(void *handle) 
@@ -342,6 +492,7 @@ static int navi10_ih_early_init(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
navi10_ih_set_interrupt_funcs(adev); 
+	navi10_ih_set_self_irq_funcs(adev);
  	return 0;
  }
@@ -351,6 +502,12 @@ static int navi10_ih_sw_init(void *handle) 
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
  	bool use_bus_addr;
+ r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_IH, 0, 
+				&adev->irq.self_irq);
+
+	if (r)
+		return r;
+
  	/* use gpu virtual address for ih ring
  	 * until ih_checken is programmed to allow
  	 * use bus address for ih ring by psp bl */
@@ -363,6 +520,20 @@ static int navi10_ih_sw_init(void *handle)
  	adev->irq.ih.use_doorbell = true;
  	adev->irq.ih.doorbell_index = adev->doorbell_index.ih << 1;
+ r = amdgpu_ih_ring_init(adev, &adev->irq.ih1, PAGE_SIZE, true); 
+	if (r)
+		return r;
+
+	adev->irq.ih1.use_doorbell = true;
+	adev->irq.ih1.doorbell_index = (adev->doorbell_index.ih + 1) << 1;
+
+	r = amdgpu_ih_ring_init(adev, &adev->irq.ih2, PAGE_SIZE, true);
+	if (r)
+		return r;
+
+	adev->irq.ih2.use_doorbell = true;
+	adev->irq.ih2.doorbell_index = (adev->doorbell_index.ih + 2) << 1;
+
  	r = amdgpu_irq_init(adev);
return r; 
@@ -373,6 +544,8 @@ static int navi10_ih_sw_fini(void *handle)
  	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_irq_fini(adev); 
+	amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
+	amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
  	amdgpu_ih_ring_fini(adev, &adev->irq.ih);
return 0; 
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