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#ifndef _ASM_RISCV_VMALLOC_H
#define _ASM_RISCV_VMALLOC_H
#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
extern bool pgtable_l4_enabled, pgtable_l5_enabled;
#define IOREMAP_MAX_ORDER (PUD_SHIFT)
#define arch_vmap_pud_supported arch_vmap_pud_supported
static inline bool arch_vmap_pud_supported(pgprot_t prot)
{
return pgtable_l4_enabled || pgtable_l5_enabled;
}
#define arch_vmap_pmd_supported arch_vmap_pmd_supported
static inline bool arch_vmap_pmd_supported(pgprot_t prot)
{
return true;
}
#ifdef CONFIG_RISCV_ISA_SVNAPOT
#include <linux/pgtable.h>
#define arch_vmap_pte_range_map_size arch_vmap_pte_range_map_size
static inline unsigned long arch_vmap_pte_range_map_size(unsigned long addr, unsigned long end,
u64 pfn, unsigned int max_page_shift)
{
unsigned long map_size = PAGE_SIZE;
unsigned long size, order;
if (!has_svnapot())
return map_size;
for_each_napot_order_rev(order) {
if (napot_cont_shift(order) > max_page_shift)
continue;
size = napot_cont_size(order);
if (end - addr < size)
continue;
if (!IS_ALIGNED(addr, size))
continue;
if (!IS_ALIGNED(PFN_PHYS(pfn), size))
continue;
map_size = size;
break;
}
return map_size;
}
#define arch_vmap_pte_supported_shift arch_vmap_pte_supported_shift
static inline int arch_vmap_pte_supported_shift(unsigned long size)
{
int shift = PAGE_SHIFT;
unsigned long order;
if (!has_svnapot())
return shift;
WARN_ON_ONCE(size >= PMD_SIZE);
for_each_napot_order_rev(order) {
if (napot_cont_size(order) > size)
continue;
if (!IS_ALIGNED(size, napot_cont_size(order)))
continue;
shift = napot_cont_shift(order);
break;
}
return shift;
}
#endif /* CONFIG_RISCV_ISA_SVNAPOT */
#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */
#endif /* _ASM_RISCV_VMALLOC_H */
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