#include "cx18-driver.h"
-static inline void cx18_io_delay(struct cx18 *cx)
-{
- if (cx->options.mmio_ndelay)
- ndelay(cx->options.mmio_ndelay);
-}
-
/*
* Readback and retry of MMIO access for reliability:
* The concept was suggested by Steve Toth <stoth@linuxtv.org>.
* The implmentation is the fault of Andy Walls <awalls@radix.net>.
+ *
+ * *write* functions are implied to retry the mmio unless suffixed with _noretry
+ * *read* functions never retry the mmio (it never helps to do so)
*/
-/* Statistics gathering */
-static inline
-void cx18_log_write_retries(struct cx18 *cx, int i, const void __iomem *addr)
-{
- if (i > CX18_MAX_MMIO_RETRIES)
- i = CX18_MAX_MMIO_RETRIES;
- atomic_inc(&cx->mmio_stats.retried_write[i]);
- return;
-}
-
-static inline
-void cx18_log_read_retries(struct cx18 *cx, int i, const void __iomem *addr)
+/* Non byteswapping memory mapped IO */
+static inline u32 cx18_raw_readl(struct cx18 *cx, const void __iomem *addr)
{
- if (i > CX18_MAX_MMIO_RETRIES)
- i = CX18_MAX_MMIO_RETRIES;
- atomic_inc(&cx->mmio_stats.retried_read[i]);
- return;
+ return __raw_readl(addr);
}
-void cx18_log_statistics(struct cx18 *cx);
-
-/* Non byteswapping memory mapped IO */
static inline
void cx18_raw_writel_noretry(struct cx18 *cx, u32 val, void __iomem *addr)
{
__raw_writel(val, addr);
- cx18_io_delay(cx);
}
-void cx18_raw_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr);
-
static inline void cx18_raw_writel(struct cx18 *cx, u32 val, void __iomem *addr)
{
- if (cx18_retry_mmio)
- cx18_raw_writel_retry(cx, val, addr);
- else
+ int i;
+ for (i = 0; i < CX18_MAX_MMIO_WR_RETRIES; i++) {
cx18_raw_writel_noretry(cx, val, addr);
+ if (val == cx18_raw_readl(cx, addr))
+ break;
+ }
}
-
-static inline
-u32 cx18_raw_readl_noretry(struct cx18 *cx, const void __iomem *addr)
-{
- u32 ret = __raw_readl(addr);
- cx18_io_delay(cx);
- return ret;
-}
-
-u32 cx18_raw_readl_retry(struct cx18 *cx, const void __iomem *addr);
-
-static inline u32 cx18_raw_readl(struct cx18 *cx, const void __iomem *addr)
+/* Normal memory mapped IO */
+static inline u32 cx18_readl(struct cx18 *cx, const void __iomem *addr)
{
- if (cx18_retry_mmio)
- return cx18_raw_readl_retry(cx, addr);
-
- return cx18_raw_readl_noretry(cx, addr);
+ return readl(addr);
}
-
static inline
-u16 cx18_raw_readw_noretry(struct cx18 *cx, const void __iomem *addr)
+void cx18_writel_noretry(struct cx18 *cx, u32 val, void __iomem *addr)
{
- u16 ret = __raw_readw(addr);
- cx18_io_delay(cx);
- return ret;
+ writel(val, addr);
}
-u16 cx18_raw_readw_retry(struct cx18 *cx, const void __iomem *addr);
-
-static inline u16 cx18_raw_readw(struct cx18 *cx, const void __iomem *addr)
+static inline void cx18_writel(struct cx18 *cx, u32 val, void __iomem *addr)
{
- if (cx18_retry_mmio)
- return cx18_raw_readw_retry(cx, addr);
-
- return cx18_raw_readw_noretry(cx, addr);
+ int i;
+ for (i = 0; i < CX18_MAX_MMIO_WR_RETRIES; i++) {
+ cx18_writel_noretry(cx, val, addr);
+ if (val == cx18_readl(cx, addr))
+ break;
+ }
}
-
-/* Normal memory mapped IO */
static inline
-void cx18_writel_noretry(struct cx18 *cx, u32 val, void __iomem *addr)
+void cx18_writel_expect(struct cx18 *cx, u32 val, void __iomem *addr,
+ u32 eval, u32 mask)
{
- writel(val, addr);
- cx18_io_delay(cx);
+ int i;
+ u32 r;
+ eval &= mask;
+ for (i = 0; i < CX18_MAX_MMIO_WR_RETRIES; i++) {
+ cx18_writel_noretry(cx, val, addr);
+ r = cx18_readl(cx, addr);
+ if (r == 0xffffffff && eval != 0xffffffff)
+ continue;
+ if (eval == (r & mask))
+ break;
+ }
}
-void cx18_writel_retry(struct cx18 *cx, u32 val, void __iomem *addr);
-
-static inline void cx18_writel(struct cx18 *cx, u32 val, void __iomem *addr)
+static inline u16 cx18_readw(struct cx18 *cx, const void __iomem *addr)
{
- if (cx18_retry_mmio)
- cx18_writel_retry(cx, val, addr);
- else
- cx18_writel_noretry(cx, val, addr);
+ return readw(addr);
}
-void _cx18_writel_expect(struct cx18 *cx, u32 val, void __iomem *addr,
- u32 eval, u32 mask);
-
static inline
void cx18_writew_noretry(struct cx18 *cx, u16 val, void __iomem *addr)
{
writew(val, addr);
- cx18_io_delay(cx);
}
-void cx18_writew_retry(struct cx18 *cx, u16 val, void __iomem *addr);
-
static inline void cx18_writew(struct cx18 *cx, u16 val, void __iomem *addr)
{
- if (cx18_retry_mmio)
- cx18_writew_retry(cx, val, addr);
- else
+ int i;
+ for (i = 0; i < CX18_MAX_MMIO_WR_RETRIES; i++) {
cx18_writew_noretry(cx, val, addr);
+ if (val == cx18_readw(cx, addr))
+ break;
+ }
}
+static inline u8 cx18_readb(struct cx18 *cx, const void __iomem *addr)
+{
+ return readb(addr);
+}
static inline
void cx18_writeb_noretry(struct cx18 *cx, u8 val, void __iomem *addr)
{
writeb(val, addr);
- cx18_io_delay(cx);
}
-void cx18_writeb_retry(struct cx18 *cx, u8 val, void __iomem *addr);
-
static inline void cx18_writeb(struct cx18 *cx, u8 val, void __iomem *addr)
{
- if (cx18_retry_mmio)
- cx18_writeb_retry(cx, val, addr);
- else
+ int i;
+ for (i = 0; i < CX18_MAX_MMIO_WR_RETRIES; i++) {
cx18_writeb_noretry(cx, val, addr);
-}
-
-
-static inline u32 cx18_readl_noretry(struct cx18 *cx, const void __iomem *addr)
-{
- u32 ret = readl(addr);
- cx18_io_delay(cx);
- return ret;
-}
-
-u32 cx18_readl_retry(struct cx18 *cx, const void __iomem *addr);
-
-static inline u32 cx18_readl(struct cx18 *cx, const void __iomem *addr)
-{
- if (cx18_retry_mmio)
- return cx18_readl_retry(cx, addr);
-
- return cx18_readl_noretry(cx, addr);
-}
-
-
-static inline u16 cx18_readw_noretry(struct cx18 *cx, const void __iomem *addr)
-{
- u16 ret = readw(addr);
- cx18_io_delay(cx);
- return ret;
-}
-
-u16 cx18_readw_retry(struct cx18 *cx, const void __iomem *addr);
-
-static inline u16 cx18_readw(struct cx18 *cx, const void __iomem *addr)
-{
- if (cx18_retry_mmio)
- return cx18_readw_retry(cx, addr);
-
- return cx18_readw_noretry(cx, addr);
-}
-
-
-static inline u8 cx18_readb_noretry(struct cx18 *cx, const void __iomem *addr)
-{
- u8 ret = readb(addr);
- cx18_io_delay(cx);
- return ret;
-}
-
-u8 cx18_readb_retry(struct cx18 *cx, const void __iomem *addr);
-
-static inline u8 cx18_readb(struct cx18 *cx, const void __iomem *addr)
-{
- if (cx18_retry_mmio)
- return cx18_readb_retry(cx, addr);
-
- return cx18_readb_noretry(cx, addr);
-}
-
-
-static inline
-u32 cx18_write_sync_noretry(struct cx18 *cx, u32 val, void __iomem *addr)
-{
- cx18_writel_noretry(cx, val, addr);
- return cx18_readl_noretry(cx, addr);
+ if (val == cx18_readb(cx, addr))
+ break;
+ }
}
static inline
-u32 cx18_write_sync_retry(struct cx18 *cx, u32 val, void __iomem *addr)
-{
- cx18_writel_retry(cx, val, addr);
- return cx18_readl_retry(cx, addr);
-}
-
-static inline u32 cx18_write_sync(struct cx18 *cx, u32 val, void __iomem *addr)
+void cx18_memcpy_fromio(struct cx18 *cx, void *to,
+ const void __iomem *from, unsigned int len)
{
- if (cx18_retry_mmio)
- return cx18_write_sync_retry(cx, val, addr);
-
- return cx18_write_sync_noretry(cx, val, addr);
+ memcpy_fromio(to, from, len);
}
-
-void cx18_memcpy_fromio(struct cx18 *cx, void *to,
- const void __iomem *from, unsigned int len);
void cx18_memset_io(struct cx18 *cx, void __iomem *addr, int val, size_t count);
cx18_writel_noretry(cx, val, cx->reg_mem + reg);
}
-static inline void cx18_write_reg_retry(struct cx18 *cx, u32 val, u32 reg)
-{
- cx18_writel_retry(cx, val, cx->reg_mem + reg);
-}
-
static inline void cx18_write_reg(struct cx18 *cx, u32 val, u32 reg)
{
- if (cx18_retry_mmio)
- cx18_write_reg_retry(cx, val, reg);
- else
- cx18_write_reg_noretry(cx, val, reg);
-}
-
-static inline void _cx18_write_reg_expect(struct cx18 *cx, u32 val, u32 reg,
- u32 eval, u32 mask)
-{
- _cx18_writel_expect(cx, val, cx->reg_mem + reg, eval, mask);
+ cx18_writel(cx, val, cx->reg_mem + reg);
}
static inline void cx18_write_reg_expect(struct cx18 *cx, u32 val, u32 reg,
u32 eval, u32 mask)
{
- if (cx18_retry_mmio)
- _cx18_write_reg_expect(cx, val, reg, eval, mask);
- else
- cx18_write_reg_noretry(cx, val, reg);
-}
-
-
-static inline u32 cx18_read_reg_noretry(struct cx18 *cx, u32 reg)
-{
- return cx18_readl_noretry(cx, cx->reg_mem + reg);
-}
-
-static inline u32 cx18_read_reg_retry(struct cx18 *cx, u32 reg)
-{
- return cx18_readl_retry(cx, cx->reg_mem + reg);
+ cx18_writel_expect(cx, val, cx->reg_mem + reg, eval, mask);
}
static inline u32 cx18_read_reg(struct cx18 *cx, u32 reg)
{
- if (cx18_retry_mmio)
- return cx18_read_reg_retry(cx, reg);
-
- return cx18_read_reg_noretry(cx, reg);
-}
-
-
-static inline u32 cx18_write_reg_sync_noretry(struct cx18 *cx, u32 val, u32 reg)
-{
- return cx18_write_sync_noretry(cx, val, cx->reg_mem + reg);
-}
-
-static inline u32 cx18_write_reg_sync_retry(struct cx18 *cx, u32 val, u32 reg)
-{
- return cx18_write_sync_retry(cx, val, cx->reg_mem + reg);
-}
-
-static inline u32 cx18_write_reg_sync(struct cx18 *cx, u32 val, u32 reg)
-{
- if (cx18_retry_mmio)
- return cx18_write_reg_sync_retry(cx, val, reg);
-
- return cx18_write_reg_sync_noretry(cx, val, reg);
+ return cx18_readl(cx, cx->reg_mem + reg);
}
/* Access "encoder memory" region of CX23418 memory mapped I/O */
-static inline void cx18_write_enc_noretry(struct cx18 *cx, u32 val, u32 addr)
-{
- cx18_writel_noretry(cx, val, cx->enc_mem + addr);
-}
-
-static inline void cx18_write_enc_retry(struct cx18 *cx, u32 val, u32 addr)
-{
- cx18_writel_retry(cx, val, cx->enc_mem + addr);
-}
-
static inline void cx18_write_enc(struct cx18 *cx, u32 val, u32 addr)
{
- if (cx18_retry_mmio)
- cx18_write_enc_retry(cx, val, addr);
- else
- cx18_write_enc_noretry(cx, val, addr);
-}
-
-
-static inline u32 cx18_read_enc_noretry(struct cx18 *cx, u32 addr)
-{
- return cx18_readl_noretry(cx, cx->enc_mem + addr);
-}
-
-static inline u32 cx18_read_enc_retry(struct cx18 *cx, u32 addr)
-{
- return cx18_readl_retry(cx, cx->enc_mem + addr);
+ cx18_writel(cx, val, cx->enc_mem + addr);
}
static inline u32 cx18_read_enc(struct cx18 *cx, u32 addr)
{
- if (cx18_retry_mmio)
- return cx18_read_enc_retry(cx, addr);
-
- return cx18_read_enc_noretry(cx, addr);
-}
-
-static inline
-u32 cx18_write_enc_sync_noretry(struct cx18 *cx, u32 val, u32 addr)
-{
- return cx18_write_sync_noretry(cx, val, cx->enc_mem + addr);
-}
-
-static inline
-u32 cx18_write_enc_sync_retry(struct cx18 *cx, u32 val, u32 addr)
-{
- return cx18_write_sync_retry(cx, val, cx->enc_mem + addr);
-}
-
-static inline
-u32 cx18_write_enc_sync(struct cx18 *cx, u32 val, u32 addr)
-{
- if (cx18_retry_mmio)
- return cx18_write_enc_sync_retry(cx, val, addr);
-
- return cx18_write_enc_sync_noretry(cx, val, addr);
+ return cx18_readl(cx, cx->enc_mem + addr);
}
void cx18_sw1_irq_enable(struct cx18 *cx, u32 val);
void cx18_sw1_irq_disable(struct cx18 *cx, u32 val);
void cx18_sw2_irq_enable(struct cx18 *cx, u32 val);
void cx18_sw2_irq_disable(struct cx18 *cx, u32 val);
+void cx18_sw2_irq_disable_cpu(struct cx18 *cx, u32 val);
void cx18_setup_page(struct cx18 *cx, u32 addr);
#endif /* CX18_IO_H */
projects / linux-2.6-omap-h63xx.git / blobdiff