netdev - [PATCH v4 2/9] net-next: ax88796: Fix MAC address reading

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Message-Id: <1524103526-12240-3-git-send-email-schmitzmic@gmail.com>
Date:   Thu, 19 Apr 2018 14:05:19 +1200
From:   Michael Schmitz <schmitzmic@...il.com>
To:     netdev@...r.kernel.org
Cc:     andrew@...n.ch, fthain@...egraphics.com.au, geert@...ux-m68k.org,
        f.fainelli@...il.com, linux-m68k@...r.kernel.org,
        Michael.Karcher@...berlin.de,
        Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>,
        Michael Schmitz <schmitzmic@...il.com>
Subject: [PATCH v4 2/9] net-next: ax88796: Fix MAC address reading

From: Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>

To read the MAC address from the (virtual) SAprom, the remote DMA
unit needs to be set up like for every other process access to card-local
memory.

Signed-off-by: Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@...il.com>
---
 drivers/net/ethernet/8390/ax88796.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c
index da61cf3..ae39375 100644
--- a/drivers/net/ethernet/8390/ax88796.c
+++ b/drivers/net/ethernet/8390/ax88796.c
@@ -669,10 +669,16 @@ static int ax_init_dev(struct net_device *dev)
 	if (ax->plat->flags & AXFLG_HAS_EEPROM) {
 		unsigned char SA_prom[32];
 
+		ei_outb(6, ioaddr + EN0_RCNTLO);
+		ei_outb(0, ioaddr + EN0_RCNTHI);
+		ei_outb(0, ioaddr + EN0_RSARLO);
+		ei_outb(0, ioaddr + EN0_RSARHI);
+		ei_outb(E8390_RREAD + E8390_START, ioaddr + NE_CMD);
 		for (i = 0; i < sizeof(SA_prom); i += 2) {
 			SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT);
 			SA_prom[i + 1] = ei_inb(ioaddr + NE_DATAPORT);
 		}
+		ei_outb(ENISR_RDC, ioaddr + EN0_ISR);	/* Ack intr. */
 
 		if (ax->plat->wordlength == 2)
 			for (i = 0; i < 16; i++)
-- 
1.7.0.4