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Date:   Tue, 18 Aug 2020 23:46:08 +0800
From:   "Ooi, Joyce" <joyce.ooi@...el.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dalon Westergreen <dalon.westergreen@...ux.intel.com>,
        Joyce Ooi <joyce.ooi@...el.com>,
        Tan Ley Foon <ley.foon.tan@...el.com>,
        See Chin Liang <chin.liang.see@...el.com>,
        Dinh Nguyen <dinh.nguyen@...el.com>,
        Dalon Westergreen <dalon.westergreen@...el.com>
Subject: [PATCH v6 05/10] net: eth: altera: Move common functions to altera_utils

From: Dalon Westergreen <dalon.westergreen@...el.com>

Move request_and_map and other shared functions to altera_utils. This
is the first step to moving common code out of tse specific code so
that it can be shared with future altera ethernet ip.

Signed-off-by: Dalon Westergreen <dalon.westergreen@...el.com>
Signed-off-by: Joyce Ooi <joyce.ooi@...el.com>
Reviewed-by: Thor Thayer <thor.thayer@...ux.intel.com>
---
v2: no change
v3: no change
v4: no change
v5: no change
v6: no change
---
 drivers/net/ethernet/altera/altera_tse.h         | 45 ---------------------
 drivers/net/ethernet/altera/altera_tse_ethtool.c |  1 +
 drivers/net/ethernet/altera/altera_tse_main.c    | 32 +--------------
 drivers/net/ethernet/altera/altera_utils.c       | 29 ++++++++++++++
 drivers/net/ethernet/altera/altera_utils.h       | 51 ++++++++++++++++++++++++
 5 files changed, 82 insertions(+), 76 deletions(-)

diff --git a/drivers/net/ethernet/altera/altera_tse.h b/drivers/net/ethernet/altera/altera_tse.h
index 26c5541fda27..fa24ab3c7d6a 100644
--- a/drivers/net/ethernet/altera/altera_tse.h
+++ b/drivers/net/ethernet/altera/altera_tse.h
@@ -489,49 +489,4 @@ struct altera_tse_private {
  */
 void altera_tse_set_ethtool_ops(struct net_device *);
 
-static inline
-u32 csrrd32(void __iomem *mac, size_t offs)
-{
-	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
-	return readl(paddr);
-}
-
-static inline
-u16 csrrd16(void __iomem *mac, size_t offs)
-{
-	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
-	return readw(paddr);
-}
-
-static inline
-u8 csrrd8(void __iomem *mac, size_t offs)
-{
-	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
-	return readb(paddr);
-}
-
-static inline
-void csrwr32(u32 val, void __iomem *mac, size_t offs)
-{
-	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
-
-	writel(val, paddr);
-}
-
-static inline
-void csrwr16(u16 val, void __iomem *mac, size_t offs)
-{
-	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
-
-	writew(val, paddr);
-}
-
-static inline
-void csrwr8(u8 val, void __iomem *mac, size_t offs)
-{
-	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
-
-	writeb(val, paddr);
-}
-
 #endif /* __ALTERA_TSE_H__ */
diff --git a/drivers/net/ethernet/altera/altera_tse_ethtool.c b/drivers/net/ethernet/altera/altera_tse_ethtool.c
index 4299f1301149..420d77f00eab 100644
--- a/drivers/net/ethernet/altera/altera_tse_ethtool.c
+++ b/drivers/net/ethernet/altera/altera_tse_ethtool.c
@@ -22,6 +22,7 @@
 #include <linux/phy.h>
 
 #include "altera_tse.h"
+#include "altera_utils.h"
 
 #define TSE_STATS_LEN	31
 #define TSE_NUM_REGS	128
diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index 0a724e4d2c8c..c9100ce24b0a 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -23,7 +23,6 @@
 #include <linux/if_vlan.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
-#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mii.h>
@@ -33,7 +32,7 @@
 #include <linux/of_net.h>
 #include <linux/of_platform.h>
 #include <linux/phy.h>
-#include <linux/platform_device.h>
+#include <linux/ptp_classify.h>
 #include <linux/skbuff.h>
 #include <asm/cacheflush.h>
 
@@ -1320,35 +1319,6 @@ static struct net_device_ops altera_tse_netdev_ops = {
 	.ndo_validate_addr	= eth_validate_addr,
 };
 
-static int request_and_map(struct platform_device *pdev, const char *name,
-			   struct resource **res, void __iomem **ptr)
-{
-	struct resource *region;
-	struct device *device = &pdev->dev;
-
-	*res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
-	if (*res == NULL) {
-		dev_err(device, "resource %s not defined\n", name);
-		return -ENODEV;
-	}
-
-	region = devm_request_mem_region(device, (*res)->start,
-					 resource_size(*res), dev_name(device));
-	if (region == NULL) {
-		dev_err(device, "unable to request %s\n", name);
-		return -EBUSY;
-	}
-
-	*ptr = devm_ioremap(device, region->start,
-				    resource_size(region));
-	if (*ptr == NULL) {
-		dev_err(device, "ioremap of %s failed!", name);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
 /* Probe Altera TSE MAC device
  */
 static int altera_tse_probe(struct platform_device *pdev)
diff --git a/drivers/net/ethernet/altera/altera_utils.c b/drivers/net/ethernet/altera/altera_utils.c
index e6a7fc9d8fb1..c9bc7d0ea02a 100644
--- a/drivers/net/ethernet/altera/altera_utils.c
+++ b/drivers/net/ethernet/altera/altera_utils.c
@@ -31,3 +31,32 @@ int tse_bit_is_clear(void __iomem *ioaddr, size_t offs, u32 bit_mask)
 	u32 value = csrrd32(ioaddr, offs);
 	return (value & bit_mask) ? 0 : 1;
 }
+
+int request_and_map(struct platform_device *pdev, const char *name,
+		    struct resource **res, void __iomem **ptr)
+{
+	struct resource *region;
+	struct device *device = &pdev->dev;
+
+	*res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
+	if (!*res) {
+		dev_err(device, "resource %s not defined\n", name);
+		return -ENODEV;
+	}
+
+	region = devm_request_mem_region(device, (*res)->start,
+					 resource_size(*res), dev_name(device));
+	if (!region) {
+		dev_err(device, "unable to request %s\n", name);
+		return -EBUSY;
+	}
+
+	*ptr = devm_ioremap(device, region->start,
+			    resource_size(region));
+	if (!*ptr) {
+		dev_err(device, "ioremap of %s failed!", name);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
diff --git a/drivers/net/ethernet/altera/altera_utils.h b/drivers/net/ethernet/altera/altera_utils.h
index b7d772f2dcbb..fbe985099a44 100644
--- a/drivers/net/ethernet/altera/altera_utils.h
+++ b/drivers/net/ethernet/altera/altera_utils.h
@@ -3,7 +3,9 @@
  * Copyright (C) 2014 Altera Corporation. All rights reserved
  */
 
+#include <linux/platform_device.h>
 #include <linux/kernel.h>
+#include <linux/io.h>
 
 #ifndef __ALTERA_UTILS_H__
 #define __ALTERA_UTILS_H__
@@ -12,5 +14,54 @@ void tse_set_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask);
 void tse_clear_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask);
 int tse_bit_is_set(void __iomem *ioaddr, size_t offs, u32 bit_mask);
 int tse_bit_is_clear(void __iomem *ioaddr, size_t offs, u32 bit_mask);
+int request_and_map(struct platform_device *pdev, const char *name,
+		    struct resource **res, void __iomem **ptr);
 
+static inline
+u32 csrrd32(void __iomem *mac, size_t offs)
+{
+	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
+
+	return readl(paddr);
+}
+
+static inline
+u16 csrrd16(void __iomem *mac, size_t offs)
+{
+	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
+
+	return readw(paddr);
+}
+
+static inline
+u8 csrrd8(void __iomem *mac, size_t offs)
+{
+	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
+
+	return readb(paddr);
+}
+
+static inline
+void csrwr32(u32 val, void __iomem *mac, size_t offs)
+{
+	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
+
+	writel(val, paddr);
+}
+
+static inline
+void csrwr16(u16 val, void __iomem *mac, size_t offs)
+{
+	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
+
+	writew(val, paddr);
+}
+
+static inline
+void csrwr8(u8 val, void __iomem *mac, size_t offs)
+{
+	void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs);
+
+	writeb(val, paddr);
+}
 #endif /* __ALTERA_UTILS_H__*/
-- 
2.13.0

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