Signed-off-by: Andrey Smirnov <[email protected]>
---
drivers/net/e1000/e1000.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h
index 291e64d..5e24758 100644
--- a/drivers/net/e1000/e1000.h
+++ b/drivers/net/e1000/e1000.h
@@ -2176,5 +2176,24 @@ static inline uint32_t e1000_read_reg(struct e1000_hw
*hw, uint32_t reg)
}
+static inline int e1000_poll_reg(struct e1000_hw *hw, uint32_t reg,
+ uint32_t mask, uint32_t value,
+ uint64_t timeout)
+{
+ const uint64_t start = get_time_ns();
+
+ do {
+ const uint32_t v = e1000_read_reg(hw, reg);
+
+ if ((v & mask) == value)
+ return 0;
+
+ } while (!is_timeout(start, timeout));
+
+ return -ETIMEDOUT;
+}
+
+#define E1000_POLL_REG(a, reg, mask, value, timeout) \
+ e1000_poll_reg((a), E1000_##reg, (mask), (value), (timeout))
#endif /* _E1000_HW_H_ */
--
2.5.0
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