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Merge branch 'pending-l2x0' into cache

This commit is contained in:
Russell King 2009-12-14 14:54:10 +00:00
parent f74f7e57ae 3d1074349b
commit bf32eb8549
1 changed files with 72 additions and 21 deletions
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93
arch/arm/mm/cache-l2x0.c
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@ -28,69 +28,120 @@
static void __iomem *l2x0_base;
static DEFINE_SPINLOCK(l2x0_lock);
static inline void sync_writel(unsigned long val, unsigned long reg,
unsigned long complete_mask)
static inline void cache_wait(void __iomem *reg, unsigned long mask)
{
unsigned long flags;
spin_lock_irqsave(&l2x0_lock, flags);
writel(val, l2x0_base + reg);
/* wait for the operation to complete */
while (readl(l2x0_base + reg) & complete_mask)
while (readl(reg) & mask)
;
spin_unlock_irqrestore(&l2x0_lock, flags);
}
static inline void cache_sync(void)
{
sync_writel(0, L2X0_CACHE_SYNC, 1);
void __iomem *base = l2x0_base;
writel(0, base + L2X0_CACHE_SYNC);
cache_wait(base + L2X0_CACHE_SYNC, 1);
}
static inline void l2x0_inv_all(void)
{
unsigned long flags;
/* invalidate all ways */
sync_writel(0xff, L2X0_INV_WAY, 0xff);
spin_lock_irqsave(&l2x0_lock, flags);
writel(0xff, l2x0_base + L2X0_INV_WAY);
cache_wait(l2x0_base + L2X0_INV_WAY, 0xff);
cache_sync();
spin_unlock_irqrestore(&l2x0_lock, flags);
}
static void l2x0_inv_range(unsigned long start, unsigned long end)
{
unsigned long addr;
void __iomem *base = l2x0_base;
unsigned long flags;
spin_lock_irqsave(&l2x0_lock, flags);
if (start & (CACHE_LINE_SIZE - 1)) {
start &= ~(CACHE_LINE_SIZE - 1);
sync_writel(start, L2X0_CLEAN_INV_LINE_PA, 1);
cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
writel(start, base + L2X0_CLEAN_INV_LINE_PA);
start += CACHE_LINE_SIZE;
}
if (end & (CACHE_LINE_SIZE - 1)) {
end &= ~(CACHE_LINE_SIZE - 1);
sync_writel(end, L2X0_CLEAN_INV_LINE_PA, 1);
cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
writel(end, base + L2X0_CLEAN_INV_LINE_PA);
}
for (addr = start; addr < end; addr += CACHE_LINE_SIZE)
sync_writel(addr, L2X0_INV_LINE_PA, 1);
while (start < end) {
unsigned long blk_end = start + min(end - start, 4096UL);
while (start < blk_end) {
cache_wait(base + L2X0_INV_LINE_PA, 1);
writel(start, base + L2X0_INV_LINE_PA);
start += CACHE_LINE_SIZE;
}
if (blk_end < end) {
spin_unlock_irqrestore(&l2x0_lock, flags);
spin_lock_irqsave(&l2x0_lock, flags);
}
}
cache_wait(base + L2X0_INV_LINE_PA, 1);
cache_sync();
spin_unlock_irqrestore(&l2x0_lock, flags);
}
static void l2x0_clean_range(unsigned long start, unsigned long end)
{
unsigned long addr;
void __iomem *base = l2x0_base;
unsigned long flags;
spin_lock_irqsave(&l2x0_lock, flags);
start &= ~(CACHE_LINE_SIZE - 1);
for (addr = start; addr < end; addr += CACHE_LINE_SIZE)
sync_writel(addr, L2X0_CLEAN_LINE_PA, 1);
while (start < end) {
unsigned long blk_end = start + min(end - start, 4096UL);
while (start < blk_end) {
cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
writel(start, base + L2X0_CLEAN_LINE_PA);
start += CACHE_LINE_SIZE;
}
if (blk_end < end) {
spin_unlock_irqrestore(&l2x0_lock, flags);
spin_lock_irqsave(&l2x0_lock, flags);
}
}
cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
cache_sync();
spin_unlock_irqrestore(&l2x0_lock, flags);
}
static void l2x0_flush_range(unsigned long start, unsigned long end)
{
unsigned long addr;
void __iomem *base = l2x0_base;
unsigned long flags;
spin_lock_irqsave(&l2x0_lock, flags);
start &= ~(CACHE_LINE_SIZE - 1);
for (addr = start; addr < end; addr += CACHE_LINE_SIZE)
sync_writel(addr, L2X0_CLEAN_INV_LINE_PA, 1);
while (start < end) {
unsigned long blk_end = start + min(end - start, 4096UL);
while (start < blk_end) {
cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
writel(start, base + L2X0_CLEAN_INV_LINE_PA);
start += CACHE_LINE_SIZE;
}
if (blk_end < end) {
spin_unlock_irqrestore(&l2x0_lock, flags);
spin_lock_irqsave(&l2x0_lock, flags);
}
}
cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
cache_sync();
spin_unlock_irqrestore(&l2x0_lock, flags);
}
void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)