vega10_ih_toggle_ring_interrupts will be used to
enable/disable an ih ring interrupts for vega10/12,
RAVEN series and RENOIR APUs
Signed-off-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Acked-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Reviewed-by: Dennis Li <Dennis.Li@xxxxxxx>
Reviewed-by: Feifei Xu <Feifei.Xu@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 45 ++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
index 42e7897f2bbc..fa4c490229a4 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
@@ -213,6 +213,51 @@ static void vega10_ih_disable_interrupts(struct amdgpu_device *adev)
}
}
+/**
+ * vega10_ih_toggle_ring_interrupts - toggle the interrupt ring buffer
+ *
+ * @adev: amdgpu_device pointer
+ * @ih: amdgpu_ih_ring pointet
+ * @enable: true - enable the interrupts, false - disable the interrupts
+ *
+ * Toggle the interrupt ring buffer (VEGA10)
+ */
+static int vega10_ih_toggle_ring_interrupts(struct amdgpu_device *adev,
+ struct amdgpu_ih_ring *ih,
+ bool enable)
+{
+ struct amdgpu_ih_regs *ih_regs;
+ uint32_t tmp;
+
+ ih_regs = &ih->ih_regs;
+
+ tmp = RREG32(ih_regs->ih_rb_cntl);
+ tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, RB_ENABLE, (enable ? 1 : 0));
+ /* enable_intr field is only valid in ring0 */
+ if (ih == &adev->irq.ih)
+ tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, ENABLE_INTR, (enable ? 1 : 0));
+ if (amdgpu_sriov_vf(adev)) {
+ if (psp_reg_program(&adev->psp, ih_regs->psp_reg_id, tmp)) {
+ dev_err(adev->dev, "PSP program IH_RB_CNTL failed!\n");
+ return -ETIMEDOUT;
+ }
+ } else {
+ WREG32(ih_regs->ih_rb_cntl, tmp);
+ }
+
+ if (enable) {
+ ih->enabled = true;
+ } else {
+ /* set rptr, wptr to 0 */
+ WREG32(ih_regs->ih_rb_rptr, 0);
+ WREG32(ih_regs->ih_rb_wptr, 0);
+ ih->enabled = false;
+ ih->rptr = 0;
+ }
+
+ return 0;
+}
+
static uint32_t vega10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl)
{
int rb_bufsz = order_base_2(ih->ring_size / 4);
--
2.17.1
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