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Subject[PATCH v5 5/6] drm/amdgpu: move hw generation check into amdgpu_doorbell_init
Date
From: Christian König <christian.koenig@amd.com>

This way we can savely call it on SI as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index a7d6804..99290af 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -419,6 +419,15 @@ void amdgpu_pci_config_reset(struct amdgpu_device *adev)
*/
static int amdgpu_doorbell_init(struct amdgpu_device *adev)
{
+ /* No doorbell on SI hardware generation */
+ if (adev->asic_type < CHIP_BONAIRE) {
+ adev->doorbell.base = 0;
+ adev->doorbell.size = 0;
+ adev->doorbell.num_doorbells = 0;
+ adev->doorbell.ptr = NULL;
+ return 0;
+ }
+
/* doorbell bar mapping */
adev->doorbell.base = pci_resource_start(adev->pdev, 2);
adev->doorbell.size = pci_resource_len(adev->pdev, 2);
@@ -2136,9 +2145,8 @@ int amdgpu_device_init(struct amdgpu_device *adev,
DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base);
DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size);

- if (adev->asic_type >= CHIP_BONAIRE)
- /* doorbell bar mapping */
- amdgpu_doorbell_init(adev);
+ /* doorbell bar mapping */
+ amdgpu_doorbell_init(adev);

/* io port mapping */
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
@@ -2335,8 +2343,7 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
adev->rio_mem = NULL;
iounmap(adev->rmmio);
adev->rmmio = NULL;
- if (adev->asic_type >= CHIP_BONAIRE)
- amdgpu_doorbell_fini(adev);
+ amdgpu_doorbell_fini(adev);
amdgpu_debugfs_regs_cleanup(adev);
}

--
2.7.4
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