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drm/amdgpu: add helper to toggle ih ring interrupts for navi10

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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>
This commit is contained in:
Hawking Zhang
2020-12-01 23:19:03 +08:00
committed by Alex Deucher
parent 1514cb7d63
commit 1ce6940e2a
1 changed files with 45 additions and 0 deletions
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45
drivers/gpu/drm/amd/amdgpu/navi10_ih.c
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@@ -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);