[Xen-devel] [PATCH v3 2/8] hvmloader: Make the printfs more informative

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

* Warn that you're relocating some BARs to 64-bit

* Warn that you're relocating guest pages, and how many

* Include upper 32-bits of the base register when printing the bar
  placement info

Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
CC: Ian Campbell <ian.campbell@xxxxxxxxxx>
CC: Ian Jackson <ian.jackson@xxxxxxxxxx>
CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
CC: Hanweidong <hanweidong@xxxxxxxxxx>
CC: Keir Fraser <keir@xxxxxxx>
---
 tools/firmware/hvmloader/pci.c |   13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/tools/firmware/hvmloader/pci.c b/tools/firmware/hvmloader/pci.c
index aa54bc1..d8592b0 100644
--- a/tools/firmware/hvmloader/pci.c
+++ b/tools/firmware/hvmloader/pci.c
@@ -213,10 +213,17 @@ void pci_setup(void)
             ((pci_mem_start << 1) != 0) )
         pci_mem_start <<= 1;
 
-    if ( (pci_mem_start << 1) != 0 )
+    if ( (pci_mem_start << 1) != 0 ) {
+        printf("Low MMIO hole not large enough for all devices,"
+               " relocating some BARs to 64-bit\n");
         bar64_relocate = 1;
+    }
 
     /* Relocate RAM that overlaps PCI space (in 64k-page chunks). */
+    if ( (pci_mem_start >> PAGE_SHIFT) < hvm_info->low_mem_pgend )
+        printf("Relocating 0x%lx pages to highmem for lowmem MMIO hole\n",
+               hvm_info->low_mem_pgend - (pci_mem_start >> PAGE_SHIFT));
+
     while ( (pci_mem_start >> PAGE_SHIFT) < hvm_info->low_mem_pgend )
     {
         struct xen_add_to_physmap xatp;
@@ -301,10 +308,10 @@ void pci_setup(void)
         pci_writel(devfn, bar_reg, bar_data);
         if (using_64bar)
             pci_writel(devfn, bar_reg + 4, bar_data_upper);
-        printf("pci dev %02x:%x bar %02x size %x%08x: %08x\n",
+        printf("pci dev %02x:%x bar %02x size %x%08x: %x%08x\n",
                devfn>>3, devfn&7, bar_reg,
                (uint32_t)(bar_sz>>32), (uint32_t)bar_sz,
-               bar_data);
+               bar_data_upper, bar_data);
                        
 
         /* Now enable the memory or I/O mapping. */
-- 
1.7.9.5


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel