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mv_xor: use {readl, writel}_relaxed instead of __raw_{readl, writel}

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In order to support big-endian execution, the mv_xor driver is changed
to use the readl_relaxed() and writel_relaxed() accessors that
properly convert from the CPU endianess to the device endianess (which
in the case of Marvell XOR hardware is always little-endian).

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Dan Williams <djbw@fb.com>
This commit is contained in:
Thomas Petazzoni 2013-07-29 17:42:13 +02:00 committed by Dan Williams
parent ad5278cd8d
commit 5733c38ae3
1 changed files with 18 additions and 18 deletions
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36
drivers/dma/mv_xor.c
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@ -114,25 +114,25 @@ static void mv_desc_set_src_addr(struct mv_xor_desc_slot *desc,
static u32 mv_chan_get_current_desc(struct mv_xor_chan *chan)
{
return __raw_readl(XOR_CURR_DESC(chan));
return readl_relaxed(XOR_CURR_DESC(chan));
}
static void mv_chan_set_next_descriptor(struct mv_xor_chan *chan,
u32 next_desc_addr)
{
__raw_writel(next_desc_addr, XOR_NEXT_DESC(chan));
writel_relaxed(next_desc_addr, XOR_NEXT_DESC(chan));
}
static void mv_chan_unmask_interrupts(struct mv_xor_chan *chan)
{
u32 val = __raw_readl(XOR_INTR_MASK(chan));
u32 val = readl_relaxed(XOR_INTR_MASK(chan));
val |= XOR_INTR_MASK_VALUE << (chan->idx * 16);
__raw_writel(val, XOR_INTR_MASK(chan));
writel_relaxed(val, XOR_INTR_MASK(chan));
}
static u32 mv_chan_get_intr_cause(struct mv_xor_chan *chan)
{
u32 intr_cause = __raw_readl(XOR_INTR_CAUSE(chan));
u32 intr_cause = readl_relaxed(XOR_INTR_CAUSE(chan));
intr_cause = (intr_cause >> (chan->idx * 16)) & 0xFFFF;
return intr_cause;
}
@ -149,13 +149,13 @@ static void mv_xor_device_clear_eoc_cause(struct mv_xor_chan *chan)
{
u32 val = ~(1 << (chan->idx * 16));
dev_dbg(mv_chan_to_devp(chan), "%s, val 0x%08x\n", __func__, val);
__raw_writel(val, XOR_INTR_CAUSE(chan));
writel_relaxed(val, XOR_INTR_CAUSE(chan));
}
static void mv_xor_device_clear_err_status(struct mv_xor_chan *chan)
{
u32 val = 0xFFFF0000 >> (chan->idx * 16);
__raw_writel(val, XOR_INTR_CAUSE(chan));
writel_relaxed(val, XOR_INTR_CAUSE(chan));
}
static int mv_can_chain(struct mv_xor_desc_slot *desc)
@ -173,7 +173,7 @@ static void mv_set_mode(struct mv_xor_chan *chan,
enum dma_transaction_type type)
{
u32 op_mode;
u32 config = __raw_readl(XOR_CONFIG(chan));
u32 config = readl_relaxed(XOR_CONFIG(chan));
switch (type) {
case DMA_XOR:
@ -192,7 +192,7 @@ static void mv_set_mode(struct mv_xor_chan *chan,
config &= ~0x7;
config |= op_mode;
__raw_writel(config, XOR_CONFIG(chan));
writel_relaxed(config, XOR_CONFIG(chan));
chan->current_type = type;
}
@ -201,14 +201,14 @@ static void mv_chan_activate(struct mv_xor_chan *chan)
u32 activation;
dev_dbg(mv_chan_to_devp(chan), " activate chan.\n");
activation = __raw_readl(XOR_ACTIVATION(chan));
activation = readl_relaxed(XOR_ACTIVATION(chan));
activation |= 0x1;
__raw_writel(activation, XOR_ACTIVATION(chan));
writel_relaxed(activation, XOR_ACTIVATION(chan));
}
static char mv_chan_is_busy(struct mv_xor_chan *chan)
{
u32 state = __raw_readl(XOR_ACTIVATION(chan));
u32 state = readl_relaxed(XOR_ACTIVATION(chan));
state = (state >> 4) & 0x3;
@ -755,22 +755,22 @@ static void mv_dump_xor_regs(struct mv_xor_chan *chan)
{
u32 val;
val = __raw_readl(XOR_CONFIG(chan));
val = readl_relaxed(XOR_CONFIG(chan));
dev_err(mv_chan_to_devp(chan), "config 0x%08x\n", val);
val = __raw_readl(XOR_ACTIVATION(chan));
val = readl_relaxed(XOR_ACTIVATION(chan));
dev_err(mv_chan_to_devp(chan), "activation 0x%08x\n", val);
val = __raw_readl(XOR_INTR_CAUSE(chan));
val = readl_relaxed(XOR_INTR_CAUSE(chan));
dev_err(mv_chan_to_devp(chan), "intr cause 0x%08x\n", val);
val = __raw_readl(XOR_INTR_MASK(chan));
val = readl_relaxed(XOR_INTR_MASK(chan));
dev_err(mv_chan_to_devp(chan), "intr mask 0x%08x\n", val);
val = __raw_readl(XOR_ERROR_CAUSE(chan));
val = readl_relaxed(XOR_ERROR_CAUSE(chan));
dev_err(mv_chan_to_devp(chan), "error cause 0x%08x\n", val);
val = __raw_readl(XOR_ERROR_ADDR(chan));
val = readl_relaxed(XOR_ERROR_ADDR(chan));
dev_err(mv_chan_to_devp(chan), "error addr 0x%08x\n", val);
}