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drm/amdgpu: simplify IH programming

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Calculate all the addresses and pointers in amdgpu_ih.c

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2018-09-18 14:24:49 +02:00
committed by Alex Deucher
parent 8bb9eb480d
commit d81f78b440
8 changed files with 73 additions and 85 deletions
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27
drivers/gpu/drm/amd/amdgpu/tonga_ih.c
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@@ -99,9 +99,9 @@ static void tonga_ih_disable_interrupts(struct amdgpu_device *adev)
*/
static int tonga_ih_irq_init(struct amdgpu_device *adev)
{
int rb_bufsz;
u32 interrupt_cntl, ih_rb_cntl, ih_doorbell_rtpr;
u64 wptr_off;
struct amdgpu_ih_ring *ih = &adev->irq.ih;
int rb_bufsz;
/* disable irqs */
tonga_ih_disable_interrupts(adev);
@@ -118,10 +118,7 @@ static int tonga_ih_irq_init(struct amdgpu_device *adev)
WREG32(mmINTERRUPT_CNTL, interrupt_cntl);
/* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/
if (adev->irq.ih.use_bus_addr)
WREG32(mmIH_RB_BASE, adev->irq.ih.rb_dma_addr >> 8);
else
WREG32(mmIH_RB_BASE, adev->irq.ih.gpu_addr >> 8);
WREG32(mmIH_RB_BASE, ih->gpu_addr >> 8);
rb_bufsz = order_base_2(adev->irq.ih.ring_size / 4);
ih_rb_cntl = REG_SET_FIELD(0, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1);
@@ -136,12 +133,8 @@ static int tonga_ih_irq_init(struct amdgpu_device *adev)
WREG32(mmIH_RB_CNTL, ih_rb_cntl);
/* set the writeback address whether it's enabled or not */
if (adev->irq.ih.use_bus_addr)
wptr_off = adev->irq.ih.rb_dma_addr + (adev->irq.ih.wptr_offs * 4);
else
wptr_off = adev->wb.gpu_addr + (adev->irq.ih.wptr_offs * 4);
WREG32(mmIH_RB_WPTR_ADDR_LO, lower_32_bits(wptr_off));
WREG32(mmIH_RB_WPTR_ADDR_HI, upper_32_bits(wptr_off) & 0xFF);
WREG32(mmIH_RB_WPTR_ADDR_LO, lower_32_bits(ih->wptr_addr));
WREG32(mmIH_RB_WPTR_ADDR_HI, upper_32_bits(ih->wptr_addr) & 0xFF);
/* set rptr, wptr to 0 */
WREG32(mmIH_RB_RPTR, 0);
@@ -198,10 +191,7 @@ static u32 tonga_ih_get_wptr(struct amdgpu_device *adev,
{
u32 wptr, tmp;
if (adev->irq.ih.use_bus_addr)
wptr = le32_to_cpu(ih->ring[ih->wptr_offs]);
else
wptr = le32_to_cpu(adev->wb.wb[ih->wptr_offs]);
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);
@@ -263,10 +253,7 @@ static void tonga_ih_set_rptr(struct amdgpu_device *adev,
{
if (ih->use_doorbell) {
/* XXX check if swapping is necessary on BE */
if (ih->use_bus_addr)
ih->ring[ih->rptr_offs] = ih->rptr;
else
adev->wb.wb[ih->rptr_offs] = ih->rptr;
*ih->rptr_cpu = ih->rptr;
WDOORBELL32(ih->doorbell_index, ih->rptr);
} else {
WREG32(mmIH_RB_RPTR, ih->rptr);