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ARM: l2c: simplify l2x0 unlocking code 

The l2x0 unlocking code is only called from l2x0_enable() now, so move
the logic entirely into that function and simplify it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Russell King 2014-03-15 22:49:59 +00:00
parent 09a5d180ed
commit faf9b2e701
1 changed files with 9 additions and 18 deletions
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27
arch/arm/mm/cache-l2x0.c
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@ -352,30 +352,21 @@ static void l2x0_disable(void)
raw_spin_unlock_irqrestore(&l2x0_lock, flags);
}
static void l2x0_unlock(u32 cache_id)
{
int lockregs;
switch (cache_id & L2X0_CACHE_ID_PART_MASK) {
case L2X0_CACHE_ID_PART_L310:
lockregs = 8;
break;
default:
/* L210 and unknown types */
lockregs = 1;
break;
}
l2c_unlock(l2x0_base, lockregs);
}
static void l2x0_enable(void __iomem *base, u32 aux, unsigned num_lock)
{
unsigned id;
id = readl_relaxed(base + L2X0_CACHE_ID) & L2X0_CACHE_ID_PART_MASK;
if (id == L2X0_CACHE_ID_PART_L310)
num_lock = 8;
else
num_lock = 1;
/* l2x0 controller is disabled */
writel_relaxed(aux, base + L2X0_AUX_CTRL);
/* Make sure that I&D is not locked down when starting */
l2x0_unlock(readl_relaxed(base + L2X0_CACHE_ID));
l2c_unlock(base, num_lock);
l2x0_inv_all();