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From 36ea484709b6da1dec6913a106c4eff534919674 Mon Sep 17 00:00:00 2001
From: Prike Liang <Prike.Liang@amd.com>
Date: Thu, 11 Oct 2018 15:38:18 +0800
Subject: [PATCH 0507/2940] Revert "drm/amdgpu: add amdgpu_vm_entries_mask v2"
This reverts commit d5e01d3beedab67dd4293aafcf05dbdf74bdb032.
Change-Id: I55f7ce8d067e88a34e1b44cbce8f3442441343e7
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 34 ++++++--------------------
1 file changed, 7 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 3553a94b2026..635bd17cd709 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -190,26 +190,6 @@ static unsigned amdgpu_vm_num_entries(struct amdgpu_device *adev,
return AMDGPU_VM_PTE_COUNT(adev);
}
-/**
- * amdgpu_vm_entries_mask - the mask to get the entry number of a PD/PT
- *
- * @adev: amdgpu_device pointer
- * @level: VMPT level
- *
- * Returns:
- * The mask to extract the entry number of a PD/PT from an address.
- */
-static uint32_t amdgpu_vm_entries_mask(struct amdgpu_device *adev,
- unsigned int level)
-{
- if (level <= adev->vm_manager.root_level)
- return 0xffffffff;
- else if (level != AMDGPU_VM_PTB)
- return 0x1ff;
- else
- return AMDGPU_VM_PTE_COUNT(adev) - 1;
-}
-
/**
* amdgpu_vm_bo_size - returns the size of the BOs in bytes
*
@@ -419,17 +399,17 @@ static void amdgpu_vm_pt_start(struct amdgpu_device *adev,
static bool amdgpu_vm_pt_descendant(struct amdgpu_device *adev,
struct amdgpu_vm_pt_cursor *cursor)
{
- unsigned mask, shift, idx;
+ unsigned num_entries, shift, idx;
if (!cursor->entry->entries)
return false;
BUG_ON(!cursor->entry->base.bo);
- mask = amdgpu_vm_entries_mask(adev, cursor->level);
+ num_entries = amdgpu_vm_num_entries(adev, cursor->level);
shift = amdgpu_vm_level_shift(adev, cursor->level);
++cursor->level;
- idx = (cursor->pfn >> shift) & mask;
+ idx = (cursor->pfn >> shift) % num_entries;
cursor->parent = cursor->entry;
cursor->entry = &cursor->entry->entries[idx];
return true;
@@ -1605,7 +1585,7 @@ static int amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
amdgpu_vm_pt_start(adev, params->vm, start, &cursor);
while (cursor.pfn < end) {
struct amdgpu_bo *pt = cursor.entry->base.bo;
- unsigned shift, parent_shift, mask;
+ unsigned shift, parent_shift, num_entries;
uint64_t incr, entry_end, pe_start;
if (!pt)
@@ -1660,9 +1640,9 @@ static int amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
/* Looks good so far, calculate parameters for the update */
incr = AMDGPU_GPU_PAGE_SIZE << shift;
- mask = amdgpu_vm_entries_mask(adev, cursor.level);
- pe_start = ((cursor.pfn >> shift) & mask) * 8;
- entry_end = (mask + 1) << shift;
+ num_entries = amdgpu_vm_num_entries(adev, cursor.level);
+ pe_start = ((cursor.pfn >> shift) & (num_entries - 1)) * 8;
+ entry_end = num_entries << shift;
entry_end += cursor.pfn & ~(entry_end - 1);
entry_end = min(entry_end, end);
--
2.17.1
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