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path: root/drivers/platform/goldfish/goldfish_pipe.c
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Diffstat (limited to 'drivers/platform/goldfish/goldfish_pipe.c')
-rw-r--r--drivers/platform/goldfish/goldfish_pipe.c34
1 files changed, 25 insertions, 9 deletions
diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
index 4f5aa831f549..d9a09d9637d9 100644
--- a/drivers/platform/goldfish/goldfish_pipe.c
+++ b/drivers/platform/goldfish/goldfish_pipe.c
@@ -56,6 +56,7 @@
#include <linux/bitops.h>
#include <linux/slab.h>
#include <linux/io.h>
+#include <linux/goldfish.h>
/*
* IMPORTANT: The following constants must match the ones used and defined
@@ -66,8 +67,10 @@
#define PIPE_REG_COMMAND 0x00 /* write: value = command */
#define PIPE_REG_STATUS 0x04 /* read */
#define PIPE_REG_CHANNEL 0x08 /* read/write: channel id */
+#define PIPE_REG_CHANNEL_HIGH 0x30 /* read/write: channel id */
#define PIPE_REG_SIZE 0x0c /* read/write: buffer size */
#define PIPE_REG_ADDRESS 0x10 /* write: physical address */
+#define PIPE_REG_ADDRESS_HIGH 0x34 /* write: physical address */
#define PIPE_REG_WAKES 0x14 /* read: wake flags */
#define PIPE_REG_PARAMS_ADDR_LOW 0x18 /* read/write: batch data address */
#define PIPE_REG_PARAMS_ADDR_HIGH 0x1c /* read/write: batch data address */
@@ -109,9 +112,9 @@
#define PIPE_WAKE_WRITE (1 << 2) /* pipe can now be written to */
struct access_params {
- u32 channel;
+ unsigned long channel;
u32 size;
- u32 address;
+ unsigned long address;
u32 cmd;
u32 result;
/* reserved for future extension */
@@ -149,13 +152,14 @@ enum {
static u32 goldfish_cmd_status(struct goldfish_pipe *pipe, u32 cmd)
-{
+{
unsigned long flags;
u32 status;
struct goldfish_pipe_dev *dev = pipe->dev;
spin_lock_irqsave(&dev->lock, flags);
- writel((u32)pipe, dev->base + PIPE_REG_CHANNEL);
+ gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,
+ dev->base + PIPE_REG_CHANNEL_HIGH);
writel(cmd, dev->base + PIPE_REG_COMMAND);
status = readl(dev->base + PIPE_REG_STATUS);
spin_unlock_irqrestore(&dev->lock, flags);
@@ -163,12 +167,13 @@ static u32 goldfish_cmd_status(struct goldfish_pipe *pipe, u32 cmd)
}
static void goldfish_cmd(struct goldfish_pipe *pipe, u32 cmd)
-{
+{
unsigned long flags;
struct goldfish_pipe_dev *dev = pipe->dev;
spin_lock_irqsave(&dev->lock, flags);
- writel((u32)pipe, dev->base + PIPE_REG_CHANNEL);
+ gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,
+ dev->base + PIPE_REG_CHANNEL_HIGH);
writel(cmd, dev->base + PIPE_REG_COMMAND);
spin_unlock_irqrestore(&dev->lock, flags);
}
@@ -322,9 +327,12 @@ static ssize_t goldfish_pipe_read_write(struct file *filp, char __user *buffer,
spin_lock_irqsave(&dev->lock, irq_flags);
if (access_with_param(dev, CMD_WRITE_BUFFER + cmd_offset,
address, avail, pipe, &status)) {
- writel((u32)pipe, dev->base + PIPE_REG_CHANNEL);
+ gf_write64((u64)(unsigned long)pipe,
+ dev->base + PIPE_REG_CHANNEL,
+ dev->base + PIPE_REG_CHANNEL_HIGH);
writel(avail, dev->base + PIPE_REG_SIZE);
- writel(address, dev->base + PIPE_REG_ADDRESS);
+ gf_write64(address, dev->base + PIPE_REG_ADDRESS,
+ dev->base + PIPE_REG_ADDRESS_HIGH);
writel(CMD_WRITE_BUFFER + cmd_offset,
dev->base + PIPE_REG_COMMAND);
status = readl(dev->base + PIPE_REG_STATUS);
@@ -447,7 +455,15 @@ static irqreturn_t goldfish_pipe_interrupt(int irq, void *dev_id)
/* First read the channel, 0 means the end of the list */
struct goldfish_pipe *pipe;
unsigned long wakes;
- unsigned long channel = readl(dev->base + PIPE_REG_CHANNEL);
+ unsigned long channel = 0;
+
+#ifdef CONFIG_64BIT
+ channel = (u64)readl(dev->base + PIPE_REG_CHANNEL_HIGH) << 32;
+
+ if (channel == 0)
+ break;
+#endif
+ channel |= readl(dev->base + PIPE_REG_CHANNEL);
if (channel == 0)
break;