diff options
| author | Hawking Zhang <Hawking.Zhang@amd.com> | 2020-12-01 23:19:03 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-23 15:04:38 -0500 |
| commit | 1ce6940e2a0a0a5ace879c2cb520bb02cb440dcd (patch) | |
| tree | bf16610b3de56d067f70368b37ff3fdfae8b04e7 | |
| parent | 1514cb7d63d59a90bb6cf26c23417fad3a843c96 (diff) | |
drm/amdgpu: add helper to toggle ih ring interrupts for navi10
navi10_ih_toggle_ring_interrupts will be used to
enable/disable an ih ring interrupts for navi1x
and onwards
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Dennis Li <Dennis.Li@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c index c2a006d57818..786f15f829e9 100644 --- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c @@ -258,6 +258,51 @@ static void navi10_ih_disable_interrupts(struct amdgpu_device *adev) } +/** + * navi10_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 (NAVI10) + */ +static int navi10_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) && adev->asic_type < CHIP_NAVI10) { + 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 navi10_ih_rb_cntl(struct amdgpu_ih_ring *ih, uint32_t ih_rb_cntl) { int rb_bufsz = order_base_2(ih->ring_size / 4); |