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u-boot/drivers/net/fm/t4240.c
Shaohui Xie 9bf499ace8 powerpc/T4240QDS/eth: some fix for XFI 
XFI is supported on T4QDS-XFI board, which removed slot3, and four LANEs
of serdes2 are routed to a SFP+ cages, which to house fiber cable or
direct attach cable(copper), the copper cable is used to emulate the
10GBASE-KR scenario.

So, for XFI usage, there are two scenarios, one will use fiber cable,
another will use copper cable. For fiber cable, there is NO PHY, while
for copper cable, we need to use internal PHY which exist in Serdes to
do auto-negotiation and link training, which implemented in kernel.
We use hwconfig to define cable type for XFI, and fixup dtb based on the
cable type.

For copper cable, set below env in hwconfig:

fsl_10gkr_copper:<10g_mac_name>

the <10g_mac_name> can be fm1_10g1, fm1_10g2, fm2_10g1, fm2_10g2. The
four <10g_mac_name>s do not have to be coexist in hwconfig. For XFI ports,
if a given 10G port will use the copper cable for 10GBASE-KR, set the
<10g_mac_name> of the port in hwconfig, otherwise, fiber cable will be
assumed to be used for the port.

For ex. if four XFI ports will both use copper cable, the hwconfig
should contain:

fsl_10gkr_copper:fm1_10g1,fm1_10g2,fm2_10g1,fm2_10g2

For fiber cable:

1. give PHY address to a XFI port, otherwise, the XFI ports will not be
available in U-boot, there is no PHY physically for XFI when using fiber
cable, this is just to make U-boot happy and we can use the XFI ports
in U-boot.
2. fixup dtb to use fixed-link in case of fiber cable which has no PHY.
Kernel requests that a MAC must have a PHY or fixed-link.

When using XFI protocol, the MAC 9/10 on FM1 should init as 10G interface.

Change serdes 2 protocol 56 to 55 which has same feature as 56 since 56
is not valid any longer.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-08-20 10:44:16 -07:00

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/*
* Copyright 2012 Freescale Semiconductor, Inc.
* Roy Zang <tie-fei.zang@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <phy.h>
#include <fm_eth.h>
#include <asm/io.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_serdes.h>
u32 port_to_devdisr[] = {
[FM1_DTSEC1] = FSL_CORENET_DEVDISR2_DTSEC1_1,
[FM1_DTSEC2] = FSL_CORENET_DEVDISR2_DTSEC1_2,
[FM1_DTSEC3] = FSL_CORENET_DEVDISR2_DTSEC1_3,
[FM1_DTSEC4] = FSL_CORENET_DEVDISR2_DTSEC1_4,
[FM1_DTSEC5] = FSL_CORENET_DEVDISR2_DTSEC1_5,
[FM1_DTSEC6] = FSL_CORENET_DEVDISR2_DTSEC1_6,
[FM1_DTSEC9] = FSL_CORENET_DEVDISR2_DTSEC1_9,
[FM1_DTSEC10] = FSL_CORENET_DEVDISR2_DTSEC1_10,
[FM1_10GEC1] = FSL_CORENET_DEVDISR2_10GEC1_1,
[FM1_10GEC2] = FSL_CORENET_DEVDISR2_10GEC1_2,
[FM2_DTSEC1] = FSL_CORENET_DEVDISR2_DTSEC2_1,
[FM2_DTSEC2] = FSL_CORENET_DEVDISR2_DTSEC2_2,
[FM2_DTSEC3] = FSL_CORENET_DEVDISR2_DTSEC2_3,
[FM2_DTSEC4] = FSL_CORENET_DEVDISR2_DTSEC2_4,
[FM2_DTSEC5] = FSL_CORENET_DEVDISR2_DTSEC2_5,
[FM2_DTSEC6] = FSL_CORENET_DEVDISR2_DTSEC2_6,
[FM2_DTSEC9] = FSL_CORENET_DEVDISR2_DTSEC2_9,
[FM2_DTSEC10] = FSL_CORENET_DEVDISR2_DTSEC2_10,
[FM2_10GEC1] = FSL_CORENET_DEVDISR2_10GEC2_1,
[FM2_10GEC2] = FSL_CORENET_DEVDISR2_10GEC2_2,
};
static int is_device_disabled(enum fm_port port)
{
ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
u32 devdisr2 = in_be32(&gur->devdisr2);
return port_to_devdisr[port] & devdisr2;
}
void fman_disable_port(enum fm_port port)
{
ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
setbits_be32(&gur->devdisr2, port_to_devdisr[port]);
}
void fman_enable_port(enum fm_port port)
{
ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
clrbits_be32(&gur->devdisr2, port_to_devdisr[port]);
}
phy_interface_t fman_port_enet_if(enum fm_port port)
{
ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
u32 rcwsr13 = in_be32(&gur->rcwsr[13]);
if (is_device_disabled(port))
return PHY_INTERFACE_MODE_NONE;
if ((port == FM1_10GEC1 || port == FM1_10GEC2) &&
((is_serdes_configured(XAUI_FM1_MAC9)) ||
(is_serdes_configured(XAUI_FM1_MAC10)) ||
(is_serdes_configured(XFI_FM1_MAC9)) ||
(is_serdes_configured(XFI_FM1_MAC10))))
return PHY_INTERFACE_MODE_XGMII;
if ((port == FM1_DTSEC9 || port == FM1_DTSEC10) &&
((is_serdes_configured(XFI_FM1_MAC9)) ||
(is_serdes_configured(XFI_FM1_MAC10))))
return PHY_INTERFACE_MODE_XGMII;
if ((port == FM2_10GEC1 || port == FM2_10GEC2) &&
((is_serdes_configured(XAUI_FM2_MAC9)) ||
(is_serdes_configured(XAUI_FM2_MAC10)) ||
(is_serdes_configured(XFI_FM2_MAC9)) ||
(is_serdes_configured(XFI_FM2_MAC10))))
return PHY_INTERFACE_MODE_XGMII;
#define FSL_CORENET_RCWSR13_EC1 0x60000000 /* bits 417..418 */
#define FSL_CORENET_RCWSR13_EC1_FM2_DTSEC5_RGMII 0x00000000
#define FSL_CORENET_RCWSR13_EC1_FM2_GPIO 0x40000000
#define FSL_CORENET_RCWSR13_EC2 0x18000000 /* bits 419..420 */
#define FSL_CORENET_RCWSR13_EC2_FM1_DTSEC5_RGMII 0x00000000
#define FSL_CORENET_RCWSR13_EC2_FM2_DTSEC6_RGMII 0x08000000
#define FSL_CORENET_RCWSR13_EC2_FM1_GPIO 0x10000000
/* handle RGMII first */
if ((port == FM2_DTSEC5) && ((rcwsr13 & FSL_CORENET_RCWSR13_EC1) ==
FSL_CORENET_RCWSR13_EC1_FM2_DTSEC5_RGMII))
return PHY_INTERFACE_MODE_RGMII;
if ((port == FM1_DTSEC5) && ((rcwsr13 & FSL_CORENET_RCWSR13_EC2) ==
FSL_CORENET_RCWSR13_EC2_FM1_DTSEC5_RGMII))
return PHY_INTERFACE_MODE_RGMII;
if ((port == FM2_DTSEC6) && ((rcwsr13 & FSL_CORENET_RCWSR13_EC2) ==
FSL_CORENET_RCWSR13_EC2_FM2_DTSEC6_RGMII))
return PHY_INTERFACE_MODE_RGMII;
switch (port) {
case FM1_DTSEC1:
case FM1_DTSEC2:
case FM1_DTSEC3:
case FM1_DTSEC4:
case FM1_DTSEC5:
case FM1_DTSEC6:
case FM1_DTSEC9:
case FM1_DTSEC10:
if (is_serdes_configured(SGMII_FM1_DTSEC1 + port - FM1_DTSEC1))
return PHY_INTERFACE_MODE_SGMII;
break;
case FM2_DTSEC1:
case FM2_DTSEC2:
case FM2_DTSEC3:
case FM2_DTSEC4:
case FM2_DTSEC5:
case FM2_DTSEC6:
case FM2_DTSEC9:
case FM2_DTSEC10:
if (is_serdes_configured(SGMII_FM2_DTSEC1 + port - FM2_DTSEC1))
return PHY_INTERFACE_MODE_SGMII;
break;
default:
break;
}
/* handle QSGMII */
switch (port) {
case FM1_DTSEC1:
case FM1_DTSEC2:
case FM1_DTSEC3:
case FM1_DTSEC4:
/* check lane G on SerDes1 */
if (is_serdes_configured(QSGMII_FM1_A))
return PHY_INTERFACE_MODE_QSGMII;
break;
case FM1_DTSEC5:
case FM1_DTSEC6:
case FM1_DTSEC9:
case FM1_DTSEC10:
/* check lane C on SerDes1 */
if (is_serdes_configured(QSGMII_FM1_B))
return PHY_INTERFACE_MODE_QSGMII;
break;
case FM2_DTSEC1:
case FM2_DTSEC2:
case FM2_DTSEC3:
case FM2_DTSEC4:
/* check lane G on SerDes2 */
if (is_serdes_configured(QSGMII_FM2_A))
return PHY_INTERFACE_MODE_QSGMII;
break;
case FM2_DTSEC5:
case FM2_DTSEC6:
case FM2_DTSEC9:
case FM2_DTSEC10:
/* check lane C on SerDes2 */
if (is_serdes_configured(QSGMII_FM2_B))
return PHY_INTERFACE_MODE_QSGMII;
break;
default:
break;
}
return PHY_INTERFACE_MODE_NONE;
}
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