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Commit 77cb065f authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by David S. Miller
Browse files

sh_eth: use TSU register accessors for TSU_POST<n> 



There's no particularly good reason TSU_POST<n> registers get accessed
circumventing sh_eth_tsu_{read|write}() -- start using those, removing
(badly named) sh_eth_tsu_get_post_reg_offset(),  while at it...

Signed-off-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 62264f99

drivers/net/ethernet/renesas/sh_eth.c

+6 −14
Original line number Diff line number Diff line
@@ -2610,12 +2610,6 @@ static int sh_eth_change_mtu(struct net_device *ndev, int new_mtu) 
}



/* For TSU_POSTn. Please refer to the manual about this (strange) bitfields */

static void *sh_eth_tsu_get_post_reg_offset(struct sh_eth_private *mdp,

					    int entry)

{

	return sh_eth_tsu_get_offset(mdp, TSU_POST1) + (entry / 8 * 4);

}



static u32 sh_eth_tsu_get_post_mask(int entry)

{

	return 0x0f << (28 - ((entry % 8) * 4));
@@ -2630,27 +2624,25 @@ static void sh_eth_tsu_enable_cam_entry_post(struct net_device *ndev, 
					     int entry)

{

	struct sh_eth_private *mdp = netdev_priv(ndev);

	int reg = TSU_POST1 + entry / 8;

	u32 tmp;

	void *reg_offset;



	reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry);

	tmp = ioread32(reg_offset);

	iowrite32(tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg_offset);

	tmp = sh_eth_tsu_read(mdp, reg);

	sh_eth_tsu_write(mdp, tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg);

}



static bool sh_eth_tsu_disable_cam_entry_post(struct net_device *ndev,

					      int entry)

{

	struct sh_eth_private *mdp = netdev_priv(ndev);

	int reg = TSU_POST1 + entry / 8;

	u32 post_mask, ref_mask, tmp;

	void *reg_offset;



	reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry);

	post_mask = sh_eth_tsu_get_post_mask(entry);

	ref_mask = sh_eth_tsu_get_post_bit(mdp, entry) & ~post_mask;



	tmp = ioread32(reg_offset);

	iowrite32(tmp & ~post_mask, reg_offset);

	tmp = sh_eth_tsu_read(mdp, reg);

	sh_eth_tsu_write(mdp, tmp & ~post_mask, reg);



	/* If other port enables, the function returns "true" */

	return tmp & ref_mask;