diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/cz_ih.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/cz_ih.c | 110 |
1 files changed, 66 insertions, 44 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c index 1dca0cabc326..bc7a2e06ab5f 100644 --- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c @@ -157,6 +157,9 @@ static int cz_ih_irq_init(struct amdgpu_device *adev) /* enable interrupts */ cz_ih_enable_interrupts(adev); + if (adev->irq.ih_soft.ring_size) + adev->irq.ih_soft.enabled = true; + return 0; } @@ -179,6 +182,7 @@ static void cz_ih_irq_disable(struct amdgpu_device *adev) * cz_ih_get_wptr - get the IH ring buffer wptr * * @adev: amdgpu_device pointer + * @ih: IH ring buffer to fetch wptr * * Get the IH ring buffer wptr from either the register * or the writeback memory buffer (VI). Also check for @@ -193,19 +197,38 @@ static u32 cz_ih_get_wptr(struct amdgpu_device *adev, wptr = le32_to_cpu(*ih->wptr_cpu); - if (REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) { - wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); - /* When a ring buffer overflow happen start parsing interrupt - * from the last not overwritten vector (wptr + 16). Hopefully - * this should allow us to catchup. - */ - dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", - wptr, ih->rptr, (wptr + 16) & ih->ptr_mask); - ih->rptr = (wptr + 16) & ih->ptr_mask; - tmp = RREG32(mmIH_RB_CNTL); - tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); - WREG32(mmIH_RB_CNTL, tmp); - } + if (ih == &adev->irq.ih_soft) + goto out; + + if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) + goto out; + + /* Double check that the overflow wasn't already cleared. */ + wptr = RREG32(mmIH_RB_WPTR); + + if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) + goto out; + + wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); + + /* When a ring buffer overflow happen start parsing interrupt + * from the last not overwritten vector (wptr + 16). Hopefully + * this should allow us to catchup. + */ + dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", + wptr, ih->rptr, (wptr + 16) & ih->ptr_mask); + ih->rptr = (wptr + 16) & ih->ptr_mask; + tmp = RREG32(mmIH_RB_CNTL); + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); + WREG32(mmIH_RB_CNTL, tmp); + + /* Unset the CLEAR_OVERFLOW bit immediately so new overflows + * can be detected. + */ + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 0); + WREG32(mmIH_RB_CNTL, tmp); + +out: return (wptr & ih->ptr_mask); } @@ -213,6 +236,8 @@ static u32 cz_ih_get_wptr(struct amdgpu_device *adev, * cz_ih_decode_iv - decode an interrupt vector * * @adev: amdgpu_device pointer + * @ih: IH ring buffer to decode + * @entry: IV entry to place decoded information into * * Decodes the interrupt vector at the current rptr * position and also advance the position. @@ -245,6 +270,7 @@ static void cz_ih_decode_iv(struct amdgpu_device *adev, * cz_ih_set_rptr - set the IH ring buffer rptr * * @adev: amdgpu_device pointer + * @ih: IH ring buffer to set rptr * * Set the IH ring buffer rptr. */ @@ -254,9 +280,9 @@ static void cz_ih_set_rptr(struct amdgpu_device *adev, WREG32(mmIH_RB_RPTR, ih->rptr); } -static int cz_ih_early_init(void *handle) +static int cz_ih_early_init(struct amdgpu_ip_block *ip_block) { - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = ip_block->adev; int ret; ret = amdgpu_irq_add_domain(adev); @@ -268,35 +294,38 @@ static int cz_ih_early_init(void *handle) return 0; } -static int cz_ih_sw_init(void *handle) +static int cz_ih_sw_init(struct amdgpu_ip_block *ip_block) { int r; - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = ip_block->adev; r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 64 * 1024, false); if (r) return r; + r = amdgpu_ih_ring_init(adev, &adev->irq.ih_soft, IH_SW_RING_SIZE, true); + if (r) + return r; + r = amdgpu_irq_init(adev); return r; } -static int cz_ih_sw_fini(void *handle) +static int cz_ih_sw_fini(struct amdgpu_ip_block *ip_block) { - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = ip_block->adev; - amdgpu_irq_fini(adev); - amdgpu_ih_ring_fini(adev, &adev->irq.ih); + amdgpu_irq_fini_sw(adev); amdgpu_irq_remove_domain(adev); return 0; } -static int cz_ih_hw_init(void *handle) +static int cz_ih_hw_init(struct amdgpu_ip_block *ip_block) { int r; - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = ip_block->adev; r = cz_ih_irq_init(adev); if (r) @@ -305,32 +334,26 @@ static int cz_ih_hw_init(void *handle) return 0; } -static int cz_ih_hw_fini(void *handle) +static int cz_ih_hw_fini(struct amdgpu_ip_block *ip_block) { - struct amdgpu_device *adev = (struct amdgpu_device *)handle; - - cz_ih_irq_disable(adev); + cz_ih_irq_disable(ip_block->adev); return 0; } -static int cz_ih_suspend(void *handle) +static int cz_ih_suspend(struct amdgpu_ip_block *ip_block) { - struct amdgpu_device *adev = (struct amdgpu_device *)handle; - - return cz_ih_hw_fini(adev); + return cz_ih_hw_fini(ip_block); } -static int cz_ih_resume(void *handle) +static int cz_ih_resume(struct amdgpu_ip_block *ip_block) { - struct amdgpu_device *adev = (struct amdgpu_device *)handle; - - return cz_ih_hw_init(adev); + return cz_ih_hw_init(ip_block); } -static bool cz_ih_is_idle(void *handle) +static bool cz_ih_is_idle(struct amdgpu_ip_block *ip_block) { - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = ip_block->adev; u32 tmp = RREG32(mmSRBM_STATUS); if (REG_GET_FIELD(tmp, SRBM_STATUS, IH_BUSY)) @@ -339,11 +362,11 @@ static bool cz_ih_is_idle(void *handle) return true; } -static int cz_ih_wait_for_idle(void *handle) +static int cz_ih_wait_for_idle(struct amdgpu_ip_block *ip_block) { unsigned i; u32 tmp; - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = ip_block->adev; for (i = 0; i < adev->usec_timeout; i++) { /* read MC_STATUS */ @@ -355,10 +378,10 @@ static int cz_ih_wait_for_idle(void *handle) return -ETIMEDOUT; } -static int cz_ih_soft_reset(void *handle) +static int cz_ih_soft_reset(struct amdgpu_ip_block *ip_block) { u32 srbm_soft_reset = 0; - struct amdgpu_device *adev = (struct amdgpu_device *)handle; + struct amdgpu_device *adev = ip_block->adev; u32 tmp = RREG32(mmSRBM_STATUS); if (tmp & SRBM_STATUS__IH_BUSY_MASK) @@ -385,14 +408,14 @@ static int cz_ih_soft_reset(void *handle) return 0; } -static int cz_ih_set_clockgating_state(void *handle, +static int cz_ih_set_clockgating_state(struct amdgpu_ip_block *ip_block, enum amd_clockgating_state state) { // TODO return 0; } -static int cz_ih_set_powergating_state(void *handle, +static int cz_ih_set_powergating_state(struct amdgpu_ip_block *ip_block, enum amd_powergating_state state) { // TODO @@ -402,7 +425,6 @@ static int cz_ih_set_powergating_state(void *handle, static const struct amd_ip_funcs cz_ih_ip_funcs = { .name = "cz_ih", .early_init = cz_ih_early_init, - .late_init = NULL, .sw_init = cz_ih_sw_init, .sw_fini = cz_ih_sw_fini, .hw_init = cz_ih_hw_init, |