Recently the LoPAPR spec got a new 2MB pagesize to support in Dynamic DMA
Windows API (DDW), this adds the new flag.
Linux supports it since
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=
38727311871
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <
20220321071945.918669-1-aik@ozlabs.ru>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
const struct { int shift; uint32_t mask; } masks[] = {
{ 12, RTAS_DDW_PGSIZE_4K },
{ 16, RTAS_DDW_PGSIZE_64K },
+ { 21, RTAS_DDW_PGSIZE_2M },
{ 24, RTAS_DDW_PGSIZE_16M },
{ 25, RTAS_DDW_PGSIZE_32M },
{ 26, RTAS_DDW_PGSIZE_64M },
#define RTAS_DDW_PGSIZE_128M 0x20
#define RTAS_DDW_PGSIZE_256M 0x40
#define RTAS_DDW_PGSIZE_16G 0x80
+#define RTAS_DDW_PGSIZE_2M 0x100
/* RTAS tokens */
#define RTAS_TOKEN_BASE 0x2000