[Intel-gfx] [PATCH 8/9] drm/i915: Split GEN6 PPGTT cleanup

[Ben Widawsky]

This cleanup is similar to the GEN8 cleanup (though less necessary).
Having everything split will make cleaning the initialization path error
paths easier to understand.

Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_gem_gtt.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c 
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index e1bc0b9..d3ee916 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1008,22 +1008,21 @@ static void gen6_ppgtt_insert_entries(struct 
i915_address_space *vm,
                kunmap_atomic(pt_vaddr);
 }
 
-static void gen6_ppgtt_cleanup(struct i915_address_space *vm)
+static void gen6_ppgtt_unmap_pages(struct i915_hw_ppgtt *ppgtt)
 {
-       struct i915_hw_ppgtt *ppgtt =
-               container_of(vm, struct i915_hw_ppgtt, base);
        int i;
 
-       list_del(&vm->global_link);
-       drm_mm_takedown(&ppgtt->base.mm);
-       drm_mm_remove_node(&ppgtt->node);
-
        if (ppgtt->pt_dma_addr) {
                for (i = 0; i < ppgtt->num_pd_entries; i++)
                        pci_unmap_page(ppgtt->base.dev->pdev,
                                       ppgtt->pt_dma_addr[i],
                                       4096, PCI_DMA_BIDIRECTIONAL);
        }
+}
+
+static void gen6_ppgtt_free(struct i915_hw_ppgtt *ppgtt)
+{
+       int i;
 
        kfree(ppgtt->pt_dma_addr);
        for (i = 0; i < ppgtt->num_pd_entries; i++)
@@ -1032,6 +1031,19 @@ static void gen6_ppgtt_cleanup(struct i915_address_space 
*vm)
        kfree(ppgtt);
 }
 
+static void gen6_ppgtt_cleanup(struct i915_address_space *vm)
+{
+       struct i915_hw_ppgtt *ppgtt =
+               container_of(vm, struct i915_hw_ppgtt, base);
+
+       list_del(&vm->global_link);
+       drm_mm_takedown(&ppgtt->base.mm);
+       drm_mm_remove_node(&ppgtt->node);
+
+       gen6_ppgtt_unmap_pages(ppgtt);
+       gen6_ppgtt_free(ppgtt);
+}
+
 static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
 {
 #define GEN6_PD_ALIGN (PAGE_SIZE * 16)
-- 
1.8.5.4

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