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sh_eth: fix TSU init on SH7734/R8A7740

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It appears that the single port Ether controllers having TSU (like SH7734/
R8A7740) need the same kind of treating in sh_eth_tsu_init() as R7S72100
currently has -- they also don't have the TSU registers related e.g. to
passing the frames between ports. Add the 'sh_eth_cpu_data::dual_port'
flag and use it as a new criterion for taking a "short path" in the TSU
init sequence in order to avoid writing to the non-existent registers...

Fixes: f0e81fecd4 ("net: sh_eth: Add support SH7734")
Fixes: 73a0d90730 ("net: sh_eth: add support R8A7740")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sergei Shtylyov 2018-02-24 22:41:45 +03:00 committed by David S. Miller
parent 4869a1476d
commit a94cf2a614
2 changed files with 6 additions and 1 deletions
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6
drivers/net/ethernet/renesas/sh_eth.c
View File

@ -752,6 +752,7 @@ static struct sh_eth_cpu_data sh7757_data = {
.rpadir = 1,
.rpadir_value = 2 << 16,
.rtrate = 1,
.dual_port = 1,
};
#define SH_GIGA_ETH_BASE 0xfee00000UL
@ -830,6 +831,7 @@ static struct sh_eth_cpu_data sh7757_data_giga = {
.no_trimd = 1,
.no_ade = 1,
.tsu = 1,
.dual_port = 1,
};
/* SH7734 */
@ -900,6 +902,7 @@ static struct sh_eth_cpu_data sh7763_data = {
.tsu = 1,
.irq_flags = IRQF_SHARED,
.magic = 1,
.dual_port = 1,
};
static struct sh_eth_cpu_data sh7619_data = {
@ -932,6 +935,7 @@ static struct sh_eth_cpu_data sh771x_data = {
EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
EESIPR_PREIP | EESIPR_CERFIP,
.tsu = 1,
.dual_port = 1,
};
static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
@ -2915,7 +2919,7 @@ static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev,
/* SuperH's TSU register init function */
static void sh_eth_tsu_init(struct sh_eth_private *mdp)
{
if (sh_eth_is_rz_fast_ether(mdp)) {
if (!mdp->cd->dual_port) {
sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL,
TSU_FWSLC); /* Enable POST registers */

1
drivers/net/ethernet/renesas/sh_eth.h
View File

@ -509,6 +509,7 @@ struct sh_eth_cpu_data {
unsigned rmiimode:1; /* EtherC has RMIIMODE register */
unsigned rtrate:1; /* EtherC has RTRATE register */
unsigned magic:1; /* EtherC has ECMR.MPDE and ECSR.MPD */
unsigned dual_port:1; /* Dual EtherC/E-DMAC */
};
struct sh_eth_private {