/*
* D-Cache : Per Line INV (discard or wback+discard) or FLUSH (wback)
*/
static inline void __dc_line_op(unsigned long paddr, unsigned long vaddr,
unsigned long sz, const int cacheop)
{
unsigned long flags, tmp = tmp;
local_irq_save(flags);
if (cacheop == OP_FLUSH_N_INV) {
/*
* Dcache provides 2 cmd: FLUSH or INV
* INV inturn has sub-modes: DISCARD or FLUSH-BEFORE
* flush-n-inv is achieved by INV cmd but with IM=1
* Default INV sub-mode is DISCARD, which needs to be toggled
*/
tmp = read_aux_reg(ARC_REG_DC_CTRL);
write_aux_reg(ARC_REG_DC_CTRL, tmp | DC_CTRL_INV_MODE_FLUSH);
}
__cache_line_loop(paddr, vaddr, sz, cacheop);
if (cacheop & OP_FLUSH) /* flush / flush-n-inv both wait */
wait_for_flush();
/* Switch back the DISCARD ONLY Invalidate mode */
if (cacheop == OP_FLUSH_N_INV)
write_aux_reg(ARC_REG_DC_CTRL, tmp & ~DC_CTRL_INV_MODE_FLUSH);
local_irq_restore(flags);
}
/***********************************************************
* Machine specific helper for per line I-Cache invalidate.
*/
static void __ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr,
unsigned long sz)
{
unsigned long flags;
local_irq_save(flags);
__cache_line_loop(paddr, vaddr, sz, OP_INV_IC);
local_irq_restore(flags);
}
/*
* D-Cache Line ops: Per Line INV (discard or wback+discard) or FLUSH (wback)
*/
static inline void __dc_line_op(unsigned long paddr, unsigned long vaddr,
unsigned long sz, const int op)
{
unsigned long flags;
local_irq_save(flags);
__before_dc_op(op);
__cache_line_loop(paddr, vaddr, sz, op);
__after_dc_op(op);
local_irq_restore(flags);
}
/*
* D-Cache : Per Line INV (discard or wback+discard) or FLUSH (wback)
*/
static inline void __dc_line_op(unsigned long paddr, unsigned long vaddr,
unsigned long sz, const int cacheop)
{
unsigned long flags;
unsigned int ctrl_reg;
local_irq_save(flags);
ctrl_reg = __before_dc_op(cacheop);
__cache_line_loop(paddr, vaddr, sz, cacheop);
__after_dc_op(cacheop, ctrl_reg);
local_irq_restore(flags);
}
