[Xen-changelog] Sorry... still one more (Last round of cleanup)

[BitKeeper Bot <riel@xxxxxxxxxxx>]

ChangeSet 1.1327.1.23, 2005/05/02 13:35:43-06:00, djm@xxxxxxxxxxxxxxx

        Sorry... still one more (Last round of cleanup)



 swiotlb.c |   63 ++++++--------------------------------------------------------
 1 files changed, 7 insertions(+), 56 deletions(-)


diff -Nru a/xen/arch/ia64/patch/linux-2.6.11/swiotlb.c 
b/xen/arch/ia64/patch/linux-2.6.11/swiotlb.c
--- a/xen/arch/ia64/patch/linux-2.6.11/swiotlb.c        2005-05-03 04:10:46 
-04:00
+++ b/xen/arch/ia64/patch/linux-2.6.11/swiotlb.c        2005-05-03 04:10:46 
-04:00
@@ -1,70 +1,22 @@
- swiotlb.c |   21 +++++++++++++--------
- 1 files changed, 13 insertions(+), 8 deletions(-)
-
-Index: linux-2.6.11-xendiffs/arch/ia64/lib/swiotlb.c
-===================================================================
---- linux-2.6.11-xendiffs.orig/arch/ia64/lib/swiotlb.c 2005-04-08 
12:13:54.040202667 -0500
-+++ linux-2.6.11-xendiffs/arch/ia64/lib/swiotlb.c      2005-04-08 
12:19:09.170367318 -0500
-@@ -124,8 +124,11 @@ swiotlb_init_with_default_size (size_t d
-       /*
-        * Get IO TLB memory from the low pages
-        */
--      io_tlb_start = alloc_bootmem_low_pages(io_tlb_nslabs *
--                                             (1 << IO_TLB_SHIFT));
-+      /* FIXME: Do we really need swiotlb in HV? If all memory trunks
-+       * presented to guest as <4G, are actually <4G in machine range,
-+       * no DMA intevention from HV...
-+       */
-+      io_tlb_start = alloc_xenheap_pages(get_order(io_tlb_nslabs * (1 << 
IO_TLB_SHIFT)));
-       if (!io_tlb_start)
-               panic("Cannot allocate SWIOTLB buffer");
-       io_tlb_end = io_tlb_start + io_tlb_nslabs * (1 << IO_TLB_SHIFT);
-@@ -135,16 +138,16 @@ swiotlb_init_with_default_size (size_t d
-        * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE
-        * between io_tlb_start and io_tlb_end.
-        */
--      io_tlb_list = alloc_bootmem(io_tlb_nslabs * sizeof(int));
-+      io_tlb_list = alloc_xenheap_pages(get_order(io_tlb_nslabs * 
sizeof(int)));
-       for (i = 0; i < io_tlb_nslabs; i++)
-               io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
-       io_tlb_index = 0;
--      io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(char *));
-+      io_tlb_orig_addr = alloc_xenheap_pages(get_order(io_tlb_nslabs * 
sizeof(char *)));
+--- ../../linux-2.6.11/arch/ia64/lib/swiotlb.c 2005-03-02 00:38:17.000000000 
-0700
++++ arch/ia64/lib/swiotlb.c    2005-05-02 13:04:15.000000000 -0600
+@@ -49,6 +49,15 @@
+  */
+ #define IO_TLB_SHIFT 11
  
-       /*
-        * Get the overflow emergency buffer
-        */
--      io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
-+      io_tlb_overflow_buffer = 
alloc_xenheap_pages(get_order(io_tlb_overflow));
-       printk(KERN_INFO "Placing software IO TLB between 0x%lx - 0x%lx\n",
-              virt_to_phys(io_tlb_start), virt_to_phys(io_tlb_end));
- }
-@@ -328,13 +331,13 @@ swiotlb_alloc_coherent(struct device *hw
-        */
-       flags |= GFP_DMA;
++#ifdef XEN
++#define __order_to_size(_order) (1 << (_order+PAGE_SHIFT))
++#define alloc_bootmem_low_pages(_x) alloc_xenheap_pages(get_order(_x))
++#define alloc_bootmem_low(_x) alloc_xenheap_pages(get_order(_x))
++#define alloc_bootmem(_x) alloc_xenheap_pages(get_order(_x))
++#define __get_free_pages(_x,_y) alloc_xenheap_pages(__order_to_size(_y))
++#define free_pages(_x,_y) free_xenheap_pages(_x,_y)
++#endif
++
+ int swiotlb_force;
  
--      ret = (void *)__get_free_pages(flags, order);
-+      ret = (void *)alloc_xenheap_pages(get_order(size));
-       if (ret && address_needs_mapping(hwdev, virt_to_phys(ret))) {
-               /*
-                * The allocated memory isn't reachable by the device.
-                * Fall back on swiotlb_map_single().
-                */
--              free_pages((unsigned long) ret, order);
-+              free_xenheap_pages((unsigned long) ret, order);
-               ret = NULL;
-       }
-       if (!ret) {
-@@ -372,7 +375,7 @@ swiotlb_free_coherent(struct device *hwd
- {
-       if (!(vaddr >= (void *)io_tlb_start
-                     && vaddr < (void *)io_tlb_end))
--              free_pages((unsigned long) vaddr, get_order(size));
-+              free_xenheap_pages((unsigned long) vaddr, get_order(size));
-       else
-               /* DMA_TO_DEVICE to avoid memcpy in unmap_single */
-               swiotlb_unmap_single (hwdev, dma_handle, size, DMA_TO_DEVICE);
-@@ -388,8 +391,10 @@ swiotlb_full(struct device *dev, size_t 
+ /*
+@@ -388,8 +397,10 @@
         * When the mapping is small enough return a static buffer to limit
         * the damage, or panic when the transfer is too big.
         */

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