atomisp: remove contiguous handling

The base hmm MMU code doesn't support contiguous allocations (they BUG), so
remove support from them from the higher levels of the heirarchy.

We still need to unwind all these layers but it turns out that some of the init
order stuff is rather sensitive and the simple cleanup breaks everything
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_memory_access.c

@@ -31,32 +31,19 @@ mmgr_malloc(const size_t size)
 hrt_vaddress mmgr_alloc_attr(const size_t size, const uint16_t attrs)
 {
 	uint16_t masked_attrs = attrs & MMGR_ATTRIBUTE_MASK;
+	WARN_ON(attrs & MMGR_ATTRIBUTE_CONTIGUOUS);
 
 	if (masked_attrs & MMGR_ATTRIBUTE_CLEARED) {
-		if (masked_attrs & MMGR_ATTRIBUTE_CACHED) {
-			if (masked_attrs & MMGR_ATTRIBUTE_CONTIGUOUS)
-				return (ia_css_ptr) hrt_isp_css_mm_calloc_contiguous(size);
-			else
+		if (masked_attrs & MMGR_ATTRIBUTE_CACHED)
 			return (ia_css_ptr) hrt_isp_css_mm_calloc_cached(size);
-		} else {
-			if (masked_attrs & MMGR_ATTRIBUTE_CONTIGUOUS)
-				return (ia_css_ptr) hrt_isp_css_mm_calloc_contiguous(size);
 		else
 			return (ia_css_ptr) hrt_isp_css_mm_calloc(size);
-		}
 	} else {
-		if (masked_attrs & MMGR_ATTRIBUTE_CACHED) {
-			if (masked_attrs & MMGR_ATTRIBUTE_CONTIGUOUS)
-				return (ia_css_ptr) hrt_isp_css_mm_alloc_contiguous(size);
-			else
+		if (masked_attrs & MMGR_ATTRIBUTE_CACHED)
 			return (ia_css_ptr) hrt_isp_css_mm_alloc_cached(size);
-		} else {
-			if (masked_attrs & MMGR_ATTRIBUTE_CONTIGUOUS)
-				return (ia_css_ptr) hrt_isp_css_mm_alloc_contiguous(size);
 		else
 			return (ia_css_ptr) hrt_isp_css_mm_alloc(size);
 	}
-	}
 }
 
 hrt_vaddress

drivers/staging/media/atomisp/pci/atomisp2/hrt/hive_isp_css_mm_hrt.c

@@ -180,14 +180,3 @@ phys_addr_t hrt_isp_css_virt_to_phys(ia_css_ptr virt_addr)
 	return hmm_virt_to_phys(virt_addr);
 }
 
-ia_css_ptr hrt_isp_css_mm_alloc_contiguous(size_t bytes)
-{
-	BUG_ON(false);
-	return 0;
-}
-ia_css_ptr hrt_isp_css_mm_calloc_contiguous(size_t bytes)
-{
-	BUG_ON(false);
-	return 0;
-}
-

drivers/staging/media/atomisp/pci/atomisp2/hrt/hive_isp_css_mm_hrt.h

@@ -81,8 +81,5 @@ int hrt_isp_css_mm_store_int(ia_css_ptr virt_addr, int data);
    the display driver on  the FPGA system */
 phys_addr_t hrt_isp_css_virt_to_phys(ia_css_ptr virt_addr);
 
-ia_css_ptr hrt_isp_css_mm_alloc_contiguous(size_t bytes);
-ia_css_ptr hrt_isp_css_mm_calloc_contiguous(size_t bytes);
-
 void hrt_isp_css_mm_clear(void);
 #endif /* _hive_isp_css_mm_hrt_h_ */

drivers/staging/media/atomisp/pci/atomisp2/hrt/memory_access.c

@@ -60,42 +60,23 @@ ia_css_ptr mmgr_alloc_attr(const size_t	size, const uint16_t attribute)
 
 	assert(page_table_base_address != (sys_address)-1);
 	assert((attribute & MMGR_ATTRIBUTE_UNUSED) == 0);
+	WARN_ON(attribute & MMGR_ATTRIBUTE_CONTIGUOUS);
 
 	if (attribute & MMGR_ATTRIBUTE_CLEARED) {
 		if (attribute & MMGR_ATTRIBUTE_CACHED) {
-			if (attribute & MMGR_ATTRIBUTE_CONTIGUOUS) /* { */
-				ptr = hrt_isp_css_mm_calloc_contiguous(
-						aligned_size + extra_space);
-			/* } */ else /* { */
 			ptr = hrt_isp_css_mm_calloc_cached(
 						aligned_size + extra_space);
-			/* } */
 		} else { /* !MMGR_ATTRIBUTE_CACHED */
-			if (attribute & MMGR_ATTRIBUTE_CONTIGUOUS) /* { */
-				ptr = hrt_isp_css_mm_calloc_contiguous(
-						aligned_size + extra_space);
-			/* } */ else /* { */
 			ptr = hrt_isp_css_mm_calloc(
 						aligned_size + extra_space);
-			/* } */
 		}
 	} else { /* MMGR_ATTRIBUTE_CLEARED */
 		if (attribute & MMGR_ATTRIBUTE_CACHED) {
-			if (attribute & MMGR_ATTRIBUTE_CONTIGUOUS) /* { */
-				ptr = hrt_isp_css_mm_alloc_contiguous(
-						aligned_size + extra_space);
-			/* } */ else /* { */
 			ptr = hrt_isp_css_mm_alloc_cached(
 						aligned_size + extra_space);
-			/* } */
 		} else { /* !MMGR_ATTRIBUTE_CACHED */
-			if (attribute & MMGR_ATTRIBUTE_CONTIGUOUS) /* { */
-				ptr = hrt_isp_css_mm_alloc_contiguous(
-						aligned_size + extra_space);
-			/* } */ else /* { */
 			ptr = hrt_isp_css_mm_alloc(
 					aligned_size + extra_space);
-			/* } */
 		}
 	}
 	return ptr;