1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index 34cbd6f6a56b..36604d751d62 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -27,6 +27,7 @@
 #include <linux/io-64-nonatomic-lo-hi.h>
 
 #include "amdgpu.h"
+#include "amdgpu_gmc.h"
 #include "amdgpu_ras.h"
 #include "amdgpu_xgmi.h"
 
@@ -411,3 +412,102 @@ void amdgpu_gmc_tmz_set(struct amdgpu_device *adev)
 		break;
 	}
 }
+
+/**
+ * amdgpu_noretry_set -- set per asic noretry defaults
+ * @adev: amdgpu_device pointer
+ *
+ * Set a per asic default for the no-retry parameter.
+ *
+ */
+void amdgpu_gmc_noretry_set(struct amdgpu_device *adev)
+{
+	struct amdgpu_gmc *gmc = &adev->gmc;
+
+	switch (adev->asic_type) {
+	case CHIP_RAVEN:
+		/* Raven currently has issues with noretry
+		 * regardless of what we decide for other
+		 * asics, we should leave raven with
+		 * noretry = 0 until we root cause the
+		 * issues.
+		 */
+		if (amdgpu_noretry == -1)
+			gmc->noretry = 0;
+		else
+			gmc->noretry = amdgpu_noretry;
+		break;
+	default:
+		/* default this to 0 for now, but we may want
+		 * to change this in the future for certain
+		 * GPUs as it can increase performance in
+		 * certain cases.
+		 */
+		if (amdgpu_noretry == -1)
+			gmc->noretry = 0;
+		else
+			gmc->noretry = amdgpu_noretry;
+		break;
+	}
+}
+
+void amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type,
+				   bool enable)
+{
+	struct amdgpu_vmhub *hub;
+	u32 tmp, reg, i;
+
+	hub = &adev->vmhub[hub_type];
+	for (i = 0; i < 16; i++) {
+		reg = hub->vm_context0_cntl + hub->ctx_distance * i;
+
+		tmp = RREG32(reg);
+		if (enable)
+			tmp |= hub->vm_cntx_cntl_vm_fault;
+		else
+			tmp &= ~hub->vm_cntx_cntl_vm_fault;
+
+		WREG32(reg, tmp);
+	}
+}
+
+void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev)
+{
+	unsigned size;
+
+	/*
+	 * TODO:
+	 * Currently there is a bug where some memory client outside
+	 * of the driver writes to first 8M of VRAM on S3 resume,
+	 * this overrides GART which by default gets placed in first 8M and
+	 * causes VM_FAULTS once GTT is accessed.
+	 * Keep the stolen memory reservation until the while this is not solved.
+	 */
+	switch (adev->asic_type) {
+	case CHIP_VEGA10:
+	case CHIP_RAVEN:
+	case CHIP_RENOIR:
+		adev->mman.keep_stolen_vga_memory = true;
+		break;
+	default:
+		adev->mman.keep_stolen_vga_memory = false;
+		break;
+	}
+
+	if (!amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_DCE))
+		size = 0;
+	else
+		size = amdgpu_gmc_get_vbios_fb_size(adev);
+
+	/* set to 0 if the pre-OS buffer uses up most of vram */
+	if ((adev->gmc.real_vram_size - size) < (8 * 1024 * 1024))
+		size = 0;
+
+	if (size > AMDGPU_VBIOS_VGA_ALLOCATION) {
+		adev->mman.stolen_vga_size = AMDGPU_VBIOS_VGA_ALLOCATION;
+		adev->mman.stolen_extended_size = size - adev->mman.stolen_vga_size;
+	} else {
+		adev->mman.stolen_vga_size = size;
+		adev->mman.stolen_extended_size = 0;
+	}
+}