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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 20/21] e1000: Add a "poll register" function
Date: Tue, 31 May 2016 10:09:39 -0700	[thread overview]
Message-ID: <1464714580-31488-21-git-send-email-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <1464714580-31488-1-git-send-email-andrew.smirnov@gmail.com>

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/net/e1000/e1000.h |  4 ++++
 drivers/net/e1000/regio.c | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h
index b47d538..73f2b98 100644
--- a/drivers/net/e1000/e1000.h
+++ b/drivers/net/e1000/e1000.h
@@ -2139,5 +2139,9 @@ 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 33012be..11b7d4b 100644
--- a/drivers/net/e1000/regio.c
+++ b/drivers/net/e1000/regio.c
@@ -53,3 +53,19 @@ 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;
+}
-- 
2.5.5


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  parent reply	other threads:[~2016-05-31 17:10 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-31 17:09 [PATCH 00/21] e1000 code cleanup and iNVM support Andrey Smirnov
2016-05-31 17:09 ` [PATCH 01/21] e1000: Split driver into multiple files Andrey Smirnov
2016-05-31 17:09 ` [PATCH 02/21] e1000: Include <net.h> in e1000.h Andrey Smirnov
2016-05-31 17:09 ` [PATCH 03/21] e1000: Convert E1000_*_REG macros to functions Andrey Smirnov
2016-05-31 17:09 ` [PATCH 04/21] e1000: Fix a bug in e1000_detect_gig_phy Andrey Smirnov
2016-05-31 17:09 ` [PATCH 05/21] e1000: Remove unnecessary variable Andrey Smirnov
2016-05-31 17:09 ` [PATCH 06/21] e1000: Do not read same register twice Andrey Smirnov
2016-05-31 17:09 ` [PATCH 07/21] e1000: Remove unneeded i210 specific register code Andrey Smirnov
2016-05-31 17:09 ` [PATCH 08/21] e1000: Consolidate register offset fixups Andrey Smirnov
2016-05-31 20:42   ` Trent Piepho
2016-06-01 21:35     ` Andrey Smirnov
2016-05-31 17:09 ` [PATCH 09/21] e1000: Remove 'use_eewr' parameter Andrey Smirnov
2016-05-31 17:09 ` [PATCH 10/21] e1000: Remove 'page_size' Andrey Smirnov
2016-05-31 17:09 ` [PATCH 11/21] e1000: Simplify EEPROM init for e1000_80003es2lan Andrey Smirnov
2016-05-31 17:09 ` [PATCH 12/21] e1000: Simplify EEPROM init for e1000_igb Andrey Smirnov
2016-05-31 17:09 ` [PATCH 13/21] e1000: Consolidate SPI EEPROM init code Andrey Smirnov
2016-05-31 17:09 ` [PATCH 14/21] e1000: Consolidate Microwire " Andrey Smirnov
2016-05-31 17:09 ` [PATCH 15/21] e1000: Fix a bug in e1000_probe() Andrey Smirnov
2016-05-31 17:09 ` [PATCH 16/21] e1000: Remove unnecessary intialization Andrey Smirnov
2016-05-31 17:09 ` [PATCH 17/21] e1000: Refactor Flash/EEPROM reading code Andrey Smirnov
2016-05-31 17:09 ` [PATCH 18/21] e1000: Properly release SW_FW_SYNC semaphore bits Andrey Smirnov
2016-05-31 17:09 ` [PATCH 19/21] e1000: Add EEPROM access locking for i210 Andrey Smirnov
2016-05-31 17:09 ` Andrey Smirnov [this message]
2016-05-31 17:09 ` [PATCH 21/21] e1000: Expose i210's iNVM as a cdev Andrey Smirnov

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