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| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2016-06-01 21:58:49 -0700 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-06-03 09:14:14 +0200 |
| commit | 91d3dd2fd84682c06b807e6f9755f095d399cf56 (patch) | |
| tree | 44ac0987ad46569731b5ca9ea70a3a0abe7b8477 /drivers/net | |
| parent | 72f02e6c0bf64d4598e13dfcc73c126311f243b9 (diff) | |
| download | barebox-91d3dd2fd84682c06b807e6f9755f095d399cf56.tar.gz barebox-91d3dd2fd84682c06b807e6f9755f095d399cf56.tar.xz | |
e1000: Add a "poll register" function
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/e1000/e1000.h | 4 | ||||
| -rw-r--r-- | drivers/net/e1000/regio.c | 16 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h index c6d26d5787..cb3e5effdc 100644 --- a/drivers/net/e1000/e1000.h +++ b/drivers/net/e1000/e1000.h @@ -2144,5 +2144,9 @@ int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset, int32_t e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask); int32_t e1000_swfw_sync_release(struct e1000_hw *hw, uint16_t mask); +int e1000_poll_reg(struct e1000_hw *hw, uint32_t reg, + uint32_t mask, uint32_t value, + uint64_t timeout); + #endif /* _E1000_HW_H_ */ diff --git a/drivers/net/e1000/regio.c b/drivers/net/e1000/regio.c index 497008463d..b2e9d7b6a7 100644 --- a/drivers/net/e1000/regio.c +++ b/drivers/net/e1000/regio.c @@ -52,3 +52,19 @@ void e1000_write_flush(struct e1000_hw *hw) { e1000_read_reg(hw, E1000_STATUS); } + +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; +} |