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u-boot/arch/mips/mach-octeon/cvmx-helper-bgx.c
Aaron Williams 1d10bda508 mips: octeon: Add cvmx-helper-bgx.c 
Import cvmx-helper-bgx.c from 2013 U-Boot. It will be used by the later
added drivers to support networking on the MIPS Octeon II / III
platforms.

Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2022-05-04 03:38:20 +02:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018-2022 Marvell International Ltd.
*
* Functions to configure the BGX MAC.
*/
#include <log.h>
#include <linux/delay.h>
#include <mach/cvmx-regs.h>
#include <mach/cvmx-csr.h>
#include <mach/cvmx-bootmem.h>
#include <mach/octeon-model.h>
#include <mach/cvmx-fuse.h>
#include <mach/octeon-feature.h>
#include <mach/cvmx-qlm.h>
#include <mach/octeon_qlm.h>
#include <mach/cvmx-pcie.h>
#include <mach/cvmx-coremask.h>
#include <mach/cvmx-agl-defs.h>
#include <mach/cvmx-bgxx-defs.h>
#include <mach/cvmx-gmxx-defs.h>
#include <mach/cvmx-ipd-defs.h>
#include <mach/cvmx-pki-defs.h>
#include <mach/cvmx-xcv-defs.h>
#include <mach/cvmx-helper.h>
#include <mach/cvmx-helper-board.h>
#include <mach/cvmx-helper-fdt.h>
#include <mach/cvmx-helper-bgx.h>
#include <mach/cvmx-helper-cfg.h>
#include <mach/cvmx-helper-util.h>
#include <mach/cvmx-helper-pki.h>
#include <mach/cvmx-global-resources.h>
#include <mach/cvmx-pko-internal-ports-range.h>
#include <mach/cvmx-ilk.h>
#include <mach/cvmx-pip.h>
/* Enable this define to see BGX error messages */
/*#define DEBUG_BGX */
/* Enable this variable to trace functions called for initializing BGX */
static const int debug;
/**
* cvmx_helper_bgx_override_autoneg(int xiface, int index) is a function pointer
* to override enabling/disabling of autonegotiation for SGMII, 10G-KR or 40G-KR4
* interfaces. This function is called when interface is initialized.
*/
int (*cvmx_helper_bgx_override_autoneg)(int xiface, int index) = NULL;
/*
* cvmx_helper_bgx_override_fec(int xiface) is a function pointer
* to override enabling/disabling of FEC for 10G interfaces. This function
* is called when interface is initialized.
*/
int (*cvmx_helper_bgx_override_fec)(int xiface, int index) = NULL;
/**
* Delay after enabling an interface based on the mode. Different modes take
* different amounts of time.
*/
static void
__cvmx_helper_bgx_interface_enable_delay(cvmx_helper_interface_mode_t mode)
{
switch (mode) {
case CVMX_HELPER_INTERFACE_MODE_10G_KR:
case CVMX_HELPER_INTERFACE_MODE_40G_KR4:
case CVMX_HELPER_INTERFACE_MODE_XLAUI:
case CVMX_HELPER_INTERFACE_MODE_XFI:
mdelay(250);
break;
case CVMX_HELPER_INTERFACE_MODE_RXAUI:
case CVMX_HELPER_INTERFACE_MODE_XAUI:
mdelay(100);
break;
case CVMX_HELPER_INTERFACE_MODE_SGMII:
mdelay(50);
break;
default:
mdelay(50);
break;
}
}
/**
* @INTERNAL
*
* Returns number of ports based on interface
* @param xiface Which xiface
* @return Number of ports based on xiface
*/
int __cvmx_helper_bgx_enumerate(int xiface)
{
cvmx_bgxx_cmr_tx_lmacs_t lmacs;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
lmacs.u64 = csr_rd_node(xi.node, CVMX_BGXX_CMR_TX_LMACS(xi.interface));
return lmacs.s.lmacs;
}
/**
* @INTERNAL
*
* Returns mode of each BGX LMAC (port).
* This is different than 'cvmx_helper_interface_get_mode()' which
* provides mode of an entire interface, but when BGX is in "mixed"
* mode this function should be called instead to get the protocol
* for each port (BGX LMAC) individually.
* Both function return the same enumerated mode.
*
* @param xiface is the global interface identifier
* @param index is the interface port index
* @returns mode of the individual port
*/
cvmx_helper_interface_mode_t cvmx_helper_bgx_get_mode(int xiface, int index)
{
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
cvmx_bgxx_cmrx_config_t cmr_config;
cvmx_bgxx_spux_br_pmd_control_t pmd_control;
cmr_config.u64 = csr_rd_node(
xi.node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
switch (cmr_config.s.lmac_type) {
case 0:
return CVMX_HELPER_INTERFACE_MODE_SGMII;
case 1:
return CVMX_HELPER_INTERFACE_MODE_XAUI;
case 2:
return CVMX_HELPER_INTERFACE_MODE_RXAUI;
case 3:
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
return cvmx_helper_interface_get_mode(xiface);
pmd_control.u64 = csr_rd_node(
xi.node,
CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, xi.interface));
if (pmd_control.s.train_en)
return CVMX_HELPER_INTERFACE_MODE_10G_KR;
else
return CVMX_HELPER_INTERFACE_MODE_XFI;
break;
case 4:
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
return cvmx_helper_interface_get_mode(xiface);
pmd_control.u64 = csr_rd_node(
xi.node,
CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, xi.interface));
if (pmd_control.s.train_en)
return CVMX_HELPER_INTERFACE_MODE_40G_KR4;
else
return CVMX_HELPER_INTERFACE_MODE_XLAUI;
break;
case 5:
return CVMX_HELPER_INTERFACE_MODE_RGMII;
default:
return CVMX_HELPER_INTERFACE_MODE_DISABLED;
}
}
static int __cvmx_helper_bgx_rgmii_speed(cvmx_helper_link_info_t link_info)
{
cvmx_xcv_reset_t xcv_reset;
cvmx_xcv_ctl_t xcv_ctl;
cvmx_xcv_batch_crd_ret_t crd_ret;
cvmx_xcv_dll_ctl_t dll_ctl;
cvmx_xcv_comp_ctl_t comp_ctl;
int speed;
int up = link_info.s.link_up;
int do_credits;
if (link_info.s.speed == 100)
speed = 1;
else if (link_info.s.speed == 10)
speed = 0;
else
speed = 2;
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_ctl.u64 = csr_rd(CVMX_XCV_CTL);
do_credits = up && !xcv_reset.s.enable;
if (xcv_ctl.s.lpbk_int) {
xcv_reset.s.clkrst = 0;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
}
if (up && (!xcv_reset.s.enable || xcv_ctl.s.speed != speed)) {
if (debug)
debug("%s: *** Enabling XCV block\n", __func__);
/* Enable the XCV block */
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.enable = 1;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
/* Set operating mode */
xcv_ctl.u64 = csr_rd(CVMX_XCV_CTL);
xcv_ctl.s.speed = speed;
csr_wr(CVMX_XCV_CTL, xcv_ctl.u64);
/* Configure DLL - enable or bypass */
/* TX no bypass, RX bypass */
dll_ctl.u64 = csr_rd(CVMX_XCV_DLL_CTL);
dll_ctl.s.clkrx_set = 0;
dll_ctl.s.clkrx_byp = 1;
dll_ctl.s.clktx_byp = 0;
csr_wr(CVMX_XCV_DLL_CTL, dll_ctl.u64);
/* Enable */
dll_ctl.u64 = csr_rd(CVMX_XCV_DLL_CTL);
dll_ctl.s.refclk_sel = 0;
csr_wr(CVMX_XCV_DLL_CTL, dll_ctl.u64);
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.dllrst = 0;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
/* Delay deems to be need so XCV_DLL_CTL[CLK_SET] works */
udelay(10);
comp_ctl.u64 = csr_rd(CVMX_XCV_COMP_CTL);
//comp_ctl.s.drv_pctl = 0;
//comp_ctl.s.drv_nctl = 0;
comp_ctl.s.drv_byp = 0;
csr_wr(CVMX_XCV_COMP_CTL, comp_ctl.u64);
/* enable */
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.comp = 1;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
/* setup the RXC */
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.clkrst = !xcv_ctl.s.lpbk_int;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
/* datapaths come out of the reset
* - the datapath resets will disengage BGX from the RGMII
* interface
* - XCV will continue to return TX credits for each tick that
* is sent on the TX data path
*/
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.tx_dat_rst_n = 1;
xcv_reset.s.rx_dat_rst_n = 1;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
} else if (debug) {
debug("%s: *** Not enabling XCV\n", __func__);
debug(" up: %s, xcv_reset.s.enable: %d, xcv_ctl.s.speed: %d, speed: %d\n",
up ? "true" : "false", (unsigned int)xcv_reset.s.enable,
(unsigned int)xcv_ctl.s.speed, speed);
}
/* enable the packet flow
* - The packet resets will be only disengage on packet boundaries
* - XCV will continue to return TX credits for each tick that is
* sent on the TX datapath
*/
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.tx_pkt_rst_n = up;
xcv_reset.s.rx_pkt_rst_n = up;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
/* Full reset when link is down */
if (!up) {
if (debug)
debug("%s: *** Disabling XCV reset\n", __func__);
/* wait 2*MTU in time */
mdelay(10);
/* reset the world */
csr_wr(CVMX_XCV_RESET, 0);
}
/* grant PKO TX credits */
if (do_credits) {
crd_ret.u64 = csr_rd(CVMX_XCV_BATCH_CRD_RET);
crd_ret.s.crd_ret = 1;
csr_wr(CVMX_XCV_BATCH_CRD_RET, crd_ret.u64);
}
return 0;
}
static void __cvmx_bgx_common_init_pknd(int xiface, int index)
{
int num_ports;
int num_chl = 16;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int node = xi.node;
int pknd;
cvmx_bgxx_cmrx_rx_bp_on_t bgx_rx_bp_on;
cvmx_bgxx_cmrx_rx_id_map_t cmr_rx_id_map;
cvmx_bgxx_cmr_chan_msk_and_t chan_msk_and;
cvmx_bgxx_cmr_chan_msk_or_t chan_msk_or;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
num_ports = cvmx_helper_ports_on_interface(xiface);
/* Modify bp_on mark, depending on number of LMACS on that interface
* and write it for every port
*/
bgx_rx_bp_on.u64 = 0;
bgx_rx_bp_on.s.mark = (CVMX_BGX_RX_FIFO_SIZE / (num_ports * 4 * 16));
/* Setup pkind */
pknd = cvmx_helper_get_pknd(xiface, index);
cmr_rx_id_map.u64 = csr_rd_node(
node, CVMX_BGXX_CMRX_RX_ID_MAP(index, xi.interface));
cmr_rx_id_map.s.pknd = pknd;
/* Change the default reassembly id (RID), as max 14 RIDs allowed */
if (OCTEON_IS_MODEL(OCTEON_CN73XX))
cmr_rx_id_map.s.rid = ((4 * xi.interface) + 2 + index);
csr_wr_node(node, CVMX_BGXX_CMRX_RX_ID_MAP(index, xi.interface),
cmr_rx_id_map.u64);
/* Set backpressure channel mask AND/OR registers */
chan_msk_and.u64 =
csr_rd_node(node, CVMX_BGXX_CMR_CHAN_MSK_AND(xi.interface));
chan_msk_or.u64 =
csr_rd_node(node, CVMX_BGXX_CMR_CHAN_MSK_OR(xi.interface));
chan_msk_and.s.msk_and |= ((1 << num_chl) - 1) << (16 * index);
chan_msk_or.s.msk_or |= ((1 << num_chl) - 1) << (16 * index);
csr_wr_node(node, CVMX_BGXX_CMR_CHAN_MSK_AND(xi.interface),
chan_msk_and.u64);
csr_wr_node(node, CVMX_BGXX_CMR_CHAN_MSK_OR(xi.interface),
chan_msk_or.u64);
/* set rx back pressure (bp_on) on value */
csr_wr_node(node, CVMX_BGXX_CMRX_RX_BP_ON(index, xi.interface),
bgx_rx_bp_on.u64);
}
/**
* @INTERNAL
* Probe a SGMII interface and determine the number of ports
* connected to it. The SGMII interface should still be down after
* this call. This is used by interfaces using the bgx mac.
*
* @param xiface Interface to probe
*
* @return Number of ports on the interface. Zero to disable.
*/
int __cvmx_helper_bgx_probe(int xiface)
{
return __cvmx_helper_bgx_enumerate(xiface);
}
/**
* @INTERNAL
* Return the size of the BGX TX_FIFO for a given LMAC,
* or 0 if the requested LMAC is inactive.
*
* TBD: Need also to add a "__cvmx_helper_bgx_speed()" function to
* return the speed of each LMAC.
*/
int __cvmx_helper_bgx_fifo_size(int xiface, unsigned int lmac)
{
cvmx_bgxx_cmr_tx_lmacs_t lmacs;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
unsigned int tx_fifo_size = CVMX_BGX_TX_FIFO_SIZE;
/* FIXME: Add validation for interface# < BGX_count */
lmacs.u64 = csr_rd_node(xi.node, CVMX_BGXX_CMR_TX_LMACS(xi.interface));
switch (lmacs.s.lmacs) {
case 1:
if (lmac > 0)
return 0;
else
return tx_fifo_size;
case 2:
if (lmac > 1)
return 0;
else
return tx_fifo_size >> 1;
case 3:
if (lmac > 2)
return 0;
else
return tx_fifo_size >> 2;
case 4:
if (lmac > 3)
return 0;
else
return tx_fifo_size >> 2;
default:
return 0;
}
}
/**
* @INTERNAL
* Perform initialization required only once for an SGMII port.
*
* @param xiface Interface to init
* @param index Index of prot on the interface
*
* @return Zero on success, negative on failure
*/
static int __cvmx_helper_bgx_sgmii_hardware_init_one_time(int xiface, int index)
{
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int node = xi.node;
const u64 clock_mhz = 1200; /* todo: fixme */
cvmx_bgxx_gmp_pcs_miscx_ctl_t gmp_misc_ctl;
cvmx_bgxx_gmp_pcs_linkx_timer_t gmp_timer;
if (!cvmx_helper_is_port_valid(xi.interface, index))
return 0;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
/*
* Write PCS*_LINK*_TIMER_COUNT_REG[COUNT] with the
* appropriate value. 1000BASE-X specifies a 10ms
* interval. SGMII specifies a 1.6ms interval.
*/
gmp_misc_ctl.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface));
/* Adjust the MAC mode if requested by device tree */
gmp_misc_ctl.s.mac_phy = cvmx_helper_get_mac_phy_mode(xiface, index);
gmp_misc_ctl.s.mode = cvmx_helper_get_1000x_mode(xiface, index);
csr_wr_node(node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface),
gmp_misc_ctl.u64);
gmp_timer.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_LINKX_TIMER(index, xi.interface));
if (gmp_misc_ctl.s.mode)
/* 1000BASE-X */
gmp_timer.s.count = (10000ull * clock_mhz) >> 10;
else
/* SGMII */
gmp_timer.s.count = (1600ull * clock_mhz) >> 10;
csr_wr_node(node, CVMX_BGXX_GMP_PCS_LINKX_TIMER(index, xi.interface),
gmp_timer.u64);
/*
* Write the advertisement register to be used as the
* tx_Config_Reg<D15:D0> of the autonegotiation. In
* 1000BASE-X mode, tx_Config_Reg<D15:D0> is PCS*_AN*_ADV_REG.
* In SGMII PHY mode, tx_Config_Reg<D15:D0> is
* PCS*_SGM*_AN_ADV_REG. In SGMII MAC mode,
* tx_Config_Reg<D15:D0> is the fixed value 0x4001, so this
* step can be skipped.
*/
if (gmp_misc_ctl.s.mode) {
/* 1000BASE-X */
cvmx_bgxx_gmp_pcs_anx_adv_t gmp_an_adv;
gmp_an_adv.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_ANX_ADV(index, xi.interface));
gmp_an_adv.s.rem_flt = 0;
gmp_an_adv.s.pause = 3;
gmp_an_adv.s.hfd = 1;
gmp_an_adv.s.fd = 1;
csr_wr_node(node,
CVMX_BGXX_GMP_PCS_ANX_ADV(index, xi.interface),
gmp_an_adv.u64);
} else {
if (gmp_misc_ctl.s.mac_phy) {
/* PHY Mode */
cvmx_bgxx_gmp_pcs_sgmx_an_adv_t gmp_sgmx_an_adv;
gmp_sgmx_an_adv.u64 =
csr_rd_node(node, CVMX_BGXX_GMP_PCS_SGMX_AN_ADV(
index, xi.interface));
gmp_sgmx_an_adv.s.dup = 1;
gmp_sgmx_an_adv.s.speed = 2;
csr_wr_node(node,
CVMX_BGXX_GMP_PCS_SGMX_AN_ADV(index,
xi.interface),
gmp_sgmx_an_adv.u64);
} else {
/* MAC Mode - Nothing to do */
}
}
return 0;
}
/**
* @INTERNAL
* Bring up the SGMII interface to be ready for packet I/O but
* leave I/O disabled using the GMX override. This function
* follows the bringup documented in 10.6.3 of the manual.
*
* @param xiface Interface to bringup
* @param num_ports Number of ports on the interface
*
* @return Zero on success, negative on failure
*/
static int __cvmx_helper_bgx_sgmii_hardware_init(int xiface, int num_ports)
{
int index;
int do_link_set = 1;
for (index = 0; index < num_ports; index++) {
int xipd_port = cvmx_helper_get_ipd_port(xiface, index);
cvmx_helper_interface_mode_t mode;
if (!cvmx_helper_is_port_valid(xiface, index))
continue;
__cvmx_helper_bgx_port_init(xipd_port, 0);
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_RGMII)
continue;
if (do_link_set)
__cvmx_helper_bgx_sgmii_link_set(
xipd_port,
__cvmx_helper_bgx_sgmii_link_get(xipd_port));
}
return 0;
}
/**
* @INTERNAL
* Bringup and enable a SGMII interface. After this call packet
* I/O should be fully functional. This is called with IPD
* enabled but PKO disabled. This is used by interfaces using
* the bgx mac.
*
* @param xiface Interface to bring up
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_bgx_sgmii_enable(int xiface)
{
int num_ports;
num_ports = cvmx_helper_ports_on_interface(xiface);
__cvmx_helper_bgx_sgmii_hardware_init(xiface, num_ports);
return 0;
}
/**
* @INTERNAL
* Initialize the SERDES link for the first time or after a loss
* of link.
*
* @param xiface Interface to init
* @param index Index of prot on the interface
*
* @return Zero on success, negative on failure
*/
static int __cvmx_helper_bgx_sgmii_hardware_init_link(int xiface, int index)
{
cvmx_bgxx_gmp_pcs_mrx_control_t gmp_control;
cvmx_bgxx_gmp_pcs_miscx_ctl_t gmp_misc_ctl;
cvmx_bgxx_cmrx_config_t cmr_config;
int phy_mode, mode_1000x;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int interface = xi.interface;
int node = xi.node;
int autoneg = 0;
if (!cvmx_helper_is_port_valid(xiface, index))
return 0;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
gmp_control.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface));
/* Take PCS through a reset sequence */
gmp_control.s.reset = 1;
csr_wr_node(node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface),
gmp_control.u64);
/* Wait until GMP_PCS_MRX_CONTROL[reset] comes out of reset */
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface),
cvmx_bgxx_gmp_pcs_mrx_control_t, reset, ==, 0, 10000)) {
debug("SGMII%d: Timeout waiting for port %d to finish reset\n",
interface, index);
return -1;
}
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
gmp_control.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface));
if (cvmx_helper_get_port_phy_present(xiface, index)) {
gmp_control.s.pwr_dn = 0;
} else {
gmp_control.s.spdmsb = 1;
gmp_control.s.spdlsb = 0;
gmp_control.s.pwr_dn = 0;
}
/* Write GMP_PCS_MR*_CONTROL[RST_AN]=1 to ensure a fresh SGMII
* negotiation starts.
*/
autoneg = cvmx_helper_get_port_autonegotiation(xiface, index);
gmp_control.s.rst_an = 1;
gmp_control.s.an_en = (cmr_config.s.lmac_type != 5) && autoneg;
csr_wr_node(node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface),
gmp_control.u64);
phy_mode = cvmx_helper_get_mac_phy_mode(xiface, index);
mode_1000x = cvmx_helper_get_1000x_mode(xiface, index);
gmp_misc_ctl.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface));
gmp_misc_ctl.s.mac_phy = phy_mode;
gmp_misc_ctl.s.mode = mode_1000x;
csr_wr_node(node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface),
gmp_misc_ctl.u64);
if (phy_mode || !autoneg)
/* In PHY mode we can't query the link status so we just
* assume that the link is up
*/
return 0;
/* Wait for GMP_PCS_MRX_CONTROL[an_cpt] to be set, indicating that
* SGMII autonegotiation is complete. In MAC mode this isn't an
* ethernet link, but a link between OCTEON and PHY.
*/
if (cmr_config.s.lmac_type != 5 &&
CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_GMP_PCS_MRX_STATUS(index, xi.interface),
cvmx_bgxx_gmp_pcs_mrx_status_t, an_cpt, ==, 1, 10000)) {
debug("SGMII%d: Port %d link timeout\n", interface, index);
return -1;
}
return 0;
}
/**
* @INTERNAL
* Configure an SGMII link to the specified speed after the SERDES
* link is up.
*
* @param xiface Interface to init
* @param index Index of prot on the interface
* @param link_info Link state to configure
*
* @return Zero on success, negative on failure
*/
static int __cvmx_helper_bgx_sgmii_hardware_init_link_speed(
int xiface, int index, cvmx_helper_link_info_t link_info)
{
cvmx_bgxx_cmrx_config_t cmr_config;
cvmx_bgxx_gmp_pcs_miscx_ctl_t gmp_miscx_ctl;
cvmx_bgxx_gmp_gmi_prtx_cfg_t gmp_prtx_cfg;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int node = xi.node;
if (!cvmx_helper_is_port_valid(xiface, index))
return 0;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
/* Disable GMX before we make any changes. */
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
cmr_config.s.data_pkt_tx_en = 0;
cmr_config.s.data_pkt_rx_en = 0;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
/* Wait for GMX to be idle */
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_GMP_GMI_PRTX_CFG(index, xi.interface),
cvmx_bgxx_gmp_gmi_prtx_cfg_t, rx_idle, ==, 1, 10000) ||
CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_GMP_GMI_PRTX_CFG(index, xi.interface),
cvmx_bgxx_gmp_gmi_prtx_cfg_t, tx_idle, ==, 1, 10000)) {
debug("SGMII%d:%d: Timeout waiting for port %d to be idle\n",
node, xi.interface, index);
return -1;
}
/* Read GMX CFG again to make sure the disable completed */
gmp_prtx_cfg.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_GMI_PRTX_CFG(index, xi.interface));
/*
* Get the misc control for PCS. We will need to set the
* duplication amount.
*/
gmp_miscx_ctl.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface));
/*
* Use GMXENO to force the link down if the status we get says
* it should be down.
*/
gmp_miscx_ctl.s.gmxeno = !link_info.s.link_up;
/* Only change the duplex setting if the link is up */
if (link_info.s.link_up)
gmp_prtx_cfg.s.duplex = link_info.s.full_duplex;
/* Do speed based setting for GMX */
switch (link_info.s.speed) {
case 10:
gmp_prtx_cfg.s.speed = 0;
gmp_prtx_cfg.s.speed_msb = 1;
gmp_prtx_cfg.s.slottime = 0;
/* Setting from GMX-603 */
gmp_miscx_ctl.s.samp_pt = 25;
csr_wr_node(node,
CVMX_BGXX_GMP_GMI_TXX_SLOT(index, xi.interface),
64);
csr_wr_node(node,
CVMX_BGXX_GMP_GMI_TXX_BURST(index, xi.interface),
0);
break;
case 100:
gmp_prtx_cfg.s.speed = 0;
gmp_prtx_cfg.s.speed_msb = 0;
gmp_prtx_cfg.s.slottime = 0;
gmp_miscx_ctl.s.samp_pt = 0x5;
csr_wr_node(node,
CVMX_BGXX_GMP_GMI_TXX_SLOT(index, xi.interface),
64);
csr_wr_node(node,
CVMX_BGXX_GMP_GMI_TXX_BURST(index, xi.interface),
0);
break;
case 1000:
gmp_prtx_cfg.s.speed = 1;
gmp_prtx_cfg.s.speed_msb = 0;
gmp_prtx_cfg.s.slottime = 1;
gmp_miscx_ctl.s.samp_pt = 1;
csr_wr_node(node,
CVMX_BGXX_GMP_GMI_TXX_SLOT(index, xi.interface),
512);
if (gmp_prtx_cfg.s.duplex)
/* full duplex */
csr_wr_node(node,
CVMX_BGXX_GMP_GMI_TXX_BURST(index,
xi.interface),
0);
else
/* half duplex */
csr_wr_node(node,
CVMX_BGXX_GMP_GMI_TXX_BURST(index,
xi.interface),
8192);
break;
default:
break;
}
/* Write the new misc control for PCS */
csr_wr_node(node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface),
gmp_miscx_ctl.u64);
/* Write the new GMX settings with the port still disabled */
csr_wr_node(node, CVMX_BGXX_GMP_GMI_PRTX_CFG(index, xi.interface),
gmp_prtx_cfg.u64);
/* Read GMX CFG again to make sure the config completed */
csr_rd_node(node, CVMX_BGXX_GMP_GMI_PRTX_CFG(index, xi.interface));
/* Enable back BGX. */
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
if (debug)
debug("%s: Enabling tx and rx packets on %d:%d\n", __func__,
xi.interface, index);
cmr_config.s.data_pkt_tx_en = 1;
cmr_config.s.data_pkt_rx_en = 1;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
return 0;
}
/**
* @INTERNAL
* Return the link state of an IPD/PKO port as returned by
* auto negotiation. The result of this function may not match
* Octeon's link config if auto negotiation has changed since
* the last call to cvmx_helper_link_set(). This is used by
* interfaces using the bgx mac.
*
* @param xipd_port IPD/PKO port to query
*
* @return Link state
*/
cvmx_helper_link_info_t __cvmx_helper_bgx_sgmii_link_get(int xipd_port)
{
cvmx_helper_link_info_t result;
cvmx_bgxx_gmp_pcs_mrx_control_t gmp_control;
cvmx_bgxx_gmp_pcs_miscx_ctl_t gmp_misc_ctl;
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(xipd_port);
int node = xi.node;
int index = cvmx_helper_get_interface_index_num(xp.port);
result.u64 = 0;
if (!cvmx_helper_is_port_valid(xiface, index))
return result;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
gmp_control.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface));
if (gmp_control.s.loopbck1) {
int qlm = cvmx_qlm_lmac(xiface, index);
int speed;
if (OCTEON_IS_MODEL(OCTEON_CN78XX))
speed = cvmx_qlm_get_gbaud_mhz_node(node, qlm);
else
speed = cvmx_qlm_get_gbaud_mhz(qlm);
/* Force 1Gbps full duplex link for internal loopback */
result.s.link_up = 1;
result.s.full_duplex = 1;
result.s.speed = speed * 8 / 10;
return result;
}
gmp_misc_ctl.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface));
if (gmp_misc_ctl.s.mac_phy ||
cvmx_helper_get_port_force_link_up(xiface, index)) {
int qlm = cvmx_qlm_lmac(xiface, index);
int speed;
if (OCTEON_IS_MODEL(OCTEON_CN78XX))
speed = cvmx_qlm_get_gbaud_mhz_node(node, qlm);
else
speed = cvmx_qlm_get_gbaud_mhz(qlm);
/* PHY Mode */
/* Note that this also works for 1000base-X mode */
result.s.speed = speed * 8 / 10;
result.s.full_duplex = 1;
result.s.link_up = 1;
return result;
}
/* MAC Mode */
return __cvmx_helper_board_link_get(xipd_port);
}
/**
* This sequence brings down the link for the XCV RGMII interface
*
* @param interface Interface (BGX) number. Port index is always 0
*/
static void __cvmx_helper_bgx_rgmii_link_set_down(int interface)
{
union cvmx_xcv_reset xcv_reset;
union cvmx_bgxx_cmrx_config cmr_config;
union cvmx_bgxx_gmp_pcs_mrx_control mr_control;
union cvmx_bgxx_cmrx_rx_fifo_len rx_fifo_len;
union cvmx_bgxx_cmrx_tx_fifo_len tx_fifo_len;
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.rx_pkt_rst_n = 0;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
csr_rd(CVMX_XCV_RESET);
mdelay(10); /* Wait for 1 MTU */
cmr_config.u64 = csr_rd(CVMX_BGXX_CMRX_CONFIG(0, interface));
cmr_config.s.data_pkt_rx_en = 0;
csr_wr(CVMX_BGXX_CMRX_CONFIG(0, interface), cmr_config.u64);
/* Wait for RX and TX to be idle */
do {
rx_fifo_len.u64 =
csr_rd(CVMX_BGXX_CMRX_RX_FIFO_LEN(0, interface));
tx_fifo_len.u64 =
csr_rd(CVMX_BGXX_CMRX_TX_FIFO_LEN(0, interface));
} while (rx_fifo_len.s.fifo_len > 0 && tx_fifo_len.s.lmac_idle != 1);
cmr_config.u64 = csr_rd(CVMX_BGXX_CMRX_CONFIG(0, interface));
cmr_config.s.data_pkt_tx_en = 0;
csr_wr(CVMX_BGXX_CMRX_CONFIG(0, interface), cmr_config.u64);
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.tx_pkt_rst_n = 0;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
mr_control.u64 = csr_rd(CVMX_BGXX_GMP_PCS_MRX_CONTROL(0, interface));
mr_control.s.pwr_dn = 1;
csr_wr(CVMX_BGXX_GMP_PCS_MRX_CONTROL(0, interface), mr_control.u64);
}
/**
* Sets a BGS SGMII link down.
*
* @param node Octeon node number
* @param iface BGX interface number
* @param index BGX port index
*/
static void __cvmx_helper_bgx_sgmii_link_set_down(int node, int iface,
int index)
{
union cvmx_bgxx_gmp_pcs_miscx_ctl gmp_misc_ctl;
union cvmx_bgxx_gmp_pcs_mrx_control gmp_control;
union cvmx_bgxx_cmrx_config cmr_config;
cmr_config.u64 = csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, iface));
cmr_config.s.data_pkt_tx_en = 0;
cmr_config.s.data_pkt_rx_en = 0;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, iface), cmr_config.u64);
gmp_misc_ctl.u64 =
csr_rd_node(node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, iface));
/* Disable autonegotiation only when in MAC mode. */
if (gmp_misc_ctl.s.mac_phy == 0) {
gmp_control.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, iface));
gmp_control.s.an_en = 0;
csr_wr_node(node, CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, iface),
gmp_control.u64);
}
/* Use GMXENO to force the link down. It will get reenabled later... */
gmp_misc_ctl.s.gmxeno = 1;
csr_wr_node(node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, iface),
gmp_misc_ctl.u64);
csr_rd_node(node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, iface));
}
/**
* @INTERNAL
* Configure an IPD/PKO port for the specified link state. This
* function does not influence auto negotiation at the PHY level.
* The passed link state must always match the link state returned
* by cvmx_helper_link_get(). It is normally best to use
* cvmx_helper_link_autoconf() instead. This is used by interfaces
* using the bgx mac.
*
* @param xipd_port IPD/PKO port to configure
* @param link_info The new link state
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_bgx_sgmii_link_set(int xipd_port,
cvmx_helper_link_info_t link_info)
{
cvmx_bgxx_cmrx_config_t cmr_config;
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(xipd_port);
int node = xi.node;
int index = cvmx_helper_get_interface_index_num(xp.port);
const int iface = xi.interface;
int rc = 0;
if (!cvmx_helper_is_port_valid(xiface, index))
return 0;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
cmr_config.u64 = csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, iface));
if (link_info.s.link_up) {
cmr_config.s.enable = 1;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, iface),
cmr_config.u64);
/* Apply workaround for errata BGX-22429 */
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && index) {
cvmx_bgxx_cmrx_config_t cmr0;
cmr0.u64 = csr_rd_node(node,
CVMX_BGXX_CMRX_CONFIG(0, iface));
cmr0.s.enable = 1;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(0, iface),
cmr0.u64);
}
__cvmx_helper_bgx_sgmii_hardware_init_link(xiface, index);
} else if (cvmx_helper_bgx_is_rgmii(xi.interface, index)) {
if (debug)
debug("%s: Bringing down XCV RGMII interface %d\n",
__func__, xi.interface);
__cvmx_helper_bgx_rgmii_link_set_down(xi.interface);
} else { /* Link is down, not RGMII */
__cvmx_helper_bgx_sgmii_link_set_down(node, iface, index);
return 0;
}
rc = __cvmx_helper_bgx_sgmii_hardware_init_link_speed(xiface, index,
link_info);
if (cvmx_helper_bgx_is_rgmii(xiface, index))
rc = __cvmx_helper_bgx_rgmii_speed(link_info);
return rc;
}
/**
* @INTERNAL
* Bringup XAUI interface. After this call packet I/O should be
* fully functional.
*
* @param index port on interface to bring up
* @param xiface Interface to bring up
*
* @return Zero on success, negative on failure
*/
static int __cvmx_helper_bgx_xaui_init(int index, int xiface)
{
cvmx_bgxx_cmrx_config_t cmr_config;
cvmx_bgxx_spux_br_pmd_control_t pmd_control;
cvmx_bgxx_spux_misc_control_t spu_misc_control;
cvmx_bgxx_spux_control1_t spu_control1;
cvmx_bgxx_spux_an_control_t spu_an_control;
cvmx_bgxx_spux_an_adv_t spu_an_adv;
cvmx_bgxx_spux_fec_control_t spu_fec_control;
cvmx_bgxx_spu_dbg_control_t spu_dbg_control;
cvmx_bgxx_smux_tx_append_t smu_tx_append;
cvmx_bgxx_smux_tx_ctl_t smu_tx_ctl;
cvmx_helper_interface_mode_t mode;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int interface = xi.interface;
int node = xi.node;
int use_auto_neg = 0;
int kr_mode = 0;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_10G_KR ||
mode == CVMX_HELPER_INTERFACE_MODE_40G_KR4) {
kr_mode = 1;
if (cvmx_helper_bgx_override_autoneg)
use_auto_neg =
cvmx_helper_bgx_override_autoneg(xiface, index);
else
use_auto_neg = cvmx_helper_get_port_autonegotiation(
xiface, index);
}
/* NOTE: This code was moved first, out of order compared to the HRM
* because the RESET causes all SPU registers to loose their value
*/
/* 4. Next, bring up the SMU/SPU and the BGX reconciliation layer
* logic:
*/
/* 4a. Take SMU/SPU through a reset sequence. Write
* BGX(0..5)_SPU(0..3)_CONTROL1[RESET] = 1. Read
* BGX(0..5)_SPU(0..3)_CONTROL1[RESET] until it changes value to 0. Keep
* BGX(0..5)_SPU(0..3)_MISC_CONTROL[RX_PACKET_DIS] = 1 to disable
* reception.
*/
spu_control1.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface));
spu_control1.s.reset = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface),
spu_control1.u64);
/* 1. Wait for PCS to come out of reset */
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface),
cvmx_bgxx_spux_control1_t, reset, ==, 0, 10000)) {
debug("BGX%d:%d: SPU stuck in reset\n", node, interface);
return -1;
}
/* 2. Write BGX(0..5)_CMR(0..3)_CONFIG[ENABLE] to 0,
* BGX(0..5)_SPU(0..3)_CONTROL1[LO_PWR] = 1 and
* BGX(0..5)_SPU(0..3)_MISC_CONTROL[RX_PACKET_DIS] = 1.
*/
spu_control1.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface));
spu_control1.s.lo_pwr = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface),
spu_control1.u64);
spu_misc_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface));
spu_misc_control.s.rx_packet_dis = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface),
spu_misc_control.u64);
/* 3. At this point, it may be appropriate to disable all BGX and
* SMU/SPU interrupts, as a number of them will occur during bring-up
* of the Link.
* - zero BGX(0..5)_SMU(0..3)_RX_INT
* - zero BGX(0..5)_SMU(0..3)_TX_INT
* - zero BGX(0..5)_SPU(0..3)_INT
*/
csr_wr_node(node, CVMX_BGXX_SMUX_RX_INT(index, xi.interface),
csr_rd_node(node,
CVMX_BGXX_SMUX_RX_INT(index, xi.interface)));
csr_wr_node(node, CVMX_BGXX_SMUX_TX_INT(index, xi.interface),
csr_rd_node(node,
CVMX_BGXX_SMUX_TX_INT(index, xi.interface)));
csr_wr_node(node, CVMX_BGXX_SPUX_INT(index, xi.interface),
csr_rd_node(node, CVMX_BGXX_SPUX_INT(index, xi.interface)));
/* 4. Configure the BGX LMAC. */
/* 4a. Configure the LMAC type (40GBASE-R/10GBASE-R/RXAUI/XAUI) and
* SerDes selection in the BGX(0..5)_CMR(0..3)_CONFIG register, but keep
* the ENABLE, DATA_PKT_TX_EN and DATA_PKT_RX_EN bits clear.
*/
/* Already done in bgx_setup_one_time */
/* 4b. Write BGX(0..5)_SPU(0..3)_CONTROL1[LO_PWR] = 1 and
* BGX(0..5)_SPU(0..3)_MISC_CONTROL[RX_PACKET_DIS] = 1.
*/
/* 4b. Initialize the selected SerDes lane(s) in the QLM. See Section
* 28.1.2.2 in the GSER chapter.
*/
/* Already done in QLM setup */
/* 4c. For 10GBASE-KR or 40GBASE-KR, enable link training by writing
* BGX(0..5)_SPU(0..3)_BR_PMD_CONTROL[TRAIN_EN] = 1.
*/
if (kr_mode && !OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
csr_wr_node(node,
CVMX_BGXX_SPUX_BR_PMD_LP_CUP(index, interface), 0);
csr_wr_node(node,
CVMX_BGXX_SPUX_BR_PMD_LD_CUP(index, interface), 0);
csr_wr_node(node,
CVMX_BGXX_SPUX_BR_PMD_LD_REP(index, interface), 0);
pmd_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, interface));
pmd_control.s.train_en = 1;
csr_wr_node(node,
CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, interface),
pmd_control.u64);
}
/* 4d. Program all other relevant BGX configuration while
* BGX(0..5)_CMR(0..3)_CONFIG[ENABLE] = 0. This includes all things
* described in this chapter.
*/
/* Always add FCS to PAUSE frames */
smu_tx_append.u64 = csr_rd_node(
node, CVMX_BGXX_SMUX_TX_APPEND(index, xi.interface));
smu_tx_append.s.fcs_c = 1;
csr_wr_node(node, CVMX_BGXX_SMUX_TX_APPEND(index, xi.interface),
smu_tx_append.u64);
/* 4e. If Forward Error Correction is desired for 10GBASE-R or
* 40GBASE-R, enable it by writing
* BGX(0..5)_SPU(0..3)_FEC_CONTROL[FEC_EN] = 1.
*/
/* FEC is optional for 10GBASE-KR, 40GBASE-KR4, and XLAUI. We're going
* to disable it by default
*/
spu_fec_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_FEC_CONTROL(index, xi.interface));
if (cvmx_helper_bgx_override_fec)
spu_fec_control.s.fec_en =
cvmx_helper_bgx_override_fec(xiface, index);
else
spu_fec_control.s.fec_en =
cvmx_helper_get_port_fec(xiface, index);
csr_wr_node(node, CVMX_BGXX_SPUX_FEC_CONTROL(index, xi.interface),
spu_fec_control.u64);
/* 4f. If Auto-Negotiation is desired, configure and enable
* Auto-Negotiation as described in Section 33.6.2.
*/
spu_an_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_AN_CONTROL(index, xi.interface));
/* Disable extended next pages */
spu_an_control.s.xnp_en = 0;
spu_an_control.s.an_en = use_auto_neg;
csr_wr_node(node, CVMX_BGXX_SPUX_AN_CONTROL(index, xi.interface),
spu_an_control.u64);
spu_fec_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_FEC_CONTROL(index, xi.interface));
spu_an_adv.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_AN_ADV(index, xi.interface));
spu_an_adv.s.fec_req = spu_fec_control.s.fec_en;
spu_an_adv.s.fec_able = 1;
spu_an_adv.s.a100g_cr10 = 0;
spu_an_adv.s.a40g_cr4 = 0;
spu_an_adv.s.a40g_kr4 = (mode == CVMX_HELPER_INTERFACE_MODE_40G_KR4);
spu_an_adv.s.a10g_kr = (mode == CVMX_HELPER_INTERFACE_MODE_10G_KR);
spu_an_adv.s.a10g_kx4 = 0;
spu_an_adv.s.a1g_kx = 0;
spu_an_adv.s.xnp_able = 0;
spu_an_adv.s.rf = 0;
csr_wr_node(node, CVMX_BGXX_SPUX_AN_ADV(index, xi.interface),
spu_an_adv.u64);
/* 3. Set BGX(0..5)_SPU_DBG_CONTROL[AN_ARB_LINK_CHK_EN] = 1. */
spu_dbg_control.u64 =
csr_rd_node(node, CVMX_BGXX_SPU_DBG_CONTROL(xi.interface));
spu_dbg_control.s.an_nonce_match_dis = 1; /* Needed for loopback */
spu_dbg_control.s.an_arb_link_chk_en |= kr_mode;
csr_wr_node(node, CVMX_BGXX_SPU_DBG_CONTROL(xi.interface),
spu_dbg_control.u64);
/* 4. Execute the link bring-up sequence in Section 33.6.3. */
/* 5. If the auto-negotiation protocol is successful,
* BGX(0..5)_SPU(0..3)_AN_ADV[AN_COMPLETE] is set along with
* BGX(0..5)_SPU(0..3)_INT[AN_COMPLETE] when the link is up.
*/
/* 3h. Set BGX(0..5)_CMR(0..3)_CONFIG[ENABLE] = 1 and
* BGX(0..5)_SPU(0..3)_CONTROL1[LO_PWR] = 0 to enable the LMAC.
*/
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
cmr_config.s.enable = 1;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
/* Apply workaround for errata BGX-22429 */
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && index) {
cvmx_bgxx_cmrx_config_t cmr0;
cmr0.u64 = csr_rd_node(node,
CVMX_BGXX_CMRX_CONFIG(0, xi.interface));
cmr0.s.enable = 1;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(0, xi.interface),
cmr0.u64);
}
spu_control1.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface));
spu_control1.s.lo_pwr = 0;
csr_wr_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface),
spu_control1.u64);
/* 4g. Set the polarity and lane swapping of the QLM SerDes. Refer to
* Section 33.4.1, BGX(0..5)_SPU(0..3)_MISC_CONTROL[XOR_TXPLRT,XOR_RXPLRT]
* and BGX(0..5)_SPU(0..3)_MISC_CONTROL[TXPLRT,RXPLRT].
*/
/* 4c. Write BGX(0..5)_SPU(0..3)_CONTROL1[LO_PWR] = 0. */
spu_control1.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface));
spu_control1.s.lo_pwr = 0;
csr_wr_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface),
spu_control1.u64);
/* 4d. Select Deficit Idle Count mode and unidirectional enable/disable
* via BGX(0..5)_SMU(0..3)_TX_CTL[DIC_EN,UNI_EN].
*/
smu_tx_ctl.u64 =
csr_rd_node(node, CVMX_BGXX_SMUX_TX_CTL(index, xi.interface));
smu_tx_ctl.s.dic_en = 1;
smu_tx_ctl.s.uni_en = 0;
csr_wr_node(node, CVMX_BGXX_SMUX_TX_CTL(index, xi.interface),
smu_tx_ctl.u64);
{
/* Calculate the number of s-clk cycles per usec. */
const u64 clock_mhz = 1200; /* todo: fixme */
cvmx_bgxx_spu_dbg_control_t dbg_control;
dbg_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPU_DBG_CONTROL(xi.interface));
dbg_control.s.us_clk_period = clock_mhz - 1;
csr_wr_node(node, CVMX_BGXX_SPU_DBG_CONTROL(xi.interface),
dbg_control.u64);
}
/* The PHY often takes at least 100ms to stabilize */
__cvmx_helper_bgx_interface_enable_delay(mode);
return 0;
}
static void __cvmx_bgx_start_training(int node, int unit, int index)
{
cvmx_bgxx_spux_int_t spu_int;
cvmx_bgxx_spux_br_pmd_control_t pmd_control;
cvmx_bgxx_spux_an_control_t an_control;
/* Clear the training interrupts (W1C) */
spu_int.u64 = 0;
spu_int.s.training_failure = 1;
spu_int.s.training_done = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_INT(index, unit), spu_int.u64);
/* These registers aren't cleared when training is restarted. Manually
* clear them as per Errata BGX-20968.
*/
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_LP_CUP(index, unit), 0);
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_LD_CUP(index, unit), 0);
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_LD_REP(index, unit), 0);
/* Disable autonegotiation */
an_control.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_AN_CONTROL(index, unit));
an_control.s.an_en = 0;
csr_wr_node(node, CVMX_BGXX_SPUX_AN_CONTROL(index, unit),
an_control.u64);
udelay(1);
/* Restart training */
pmd_control.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, unit));
pmd_control.s.train_en = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, unit),
pmd_control.u64);
udelay(1);
pmd_control.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, unit));
pmd_control.s.train_restart = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, unit),
pmd_control.u64);
}
static void __cvmx_bgx_restart_training(int node, int unit, int index)
{
cvmx_bgxx_spux_int_t spu_int;
cvmx_bgxx_spux_br_pmd_control_t pmd_control;
/* Clear the training interrupts (W1C) */
spu_int.u64 = 0;
spu_int.s.training_failure = 1;
spu_int.s.training_done = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_INT(index, unit), spu_int.u64);
udelay(1700); /* Wait 1.7 msec */
/* These registers aren't cleared when training is restarted. Manually
* clear them as per Errata BGX-20968.
*/
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_LP_CUP(index, unit), 0);
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_LD_CUP(index, unit), 0);
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_LD_REP(index, unit), 0);
/* Restart training */
pmd_control.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, unit));
pmd_control.s.train_restart = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, unit),
pmd_control.u64);
}
/*
* @INTERNAL
* Wrapper function to configure the BGX, does not enable.
*
* @param xipd_port IPD/PKO port to configure.
* @param phy_pres If set, enable disparity, only applies to RXAUI interface
*
* @return Zero on success, negative on failure.
*/
int __cvmx_helper_bgx_port_init(int xipd_port, int phy_pres)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(xipd_port);
int index = cvmx_helper_get_interface_index_num(xp.port);
cvmx_helper_interface_mode_t mode;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
mode = cvmx_helper_bgx_get_mode(xiface, index);
__cvmx_bgx_common_init_pknd(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_SGMII ||
mode == CVMX_HELPER_INTERFACE_MODE_RGMII) {
cvmx_bgxx_gmp_gmi_txx_thresh_t gmi_tx_thresh;
cvmx_bgxx_gmp_gmi_txx_append_t gmp_txx_append;
cvmx_bgxx_gmp_gmi_txx_sgmii_ctl_t gmp_sgmii_ctl;
/* Set TX Threshold */
gmi_tx_thresh.u64 = 0;
gmi_tx_thresh.s.cnt = 0x20;
csr_wr_node(xi.node,
CVMX_BGXX_GMP_GMI_TXX_THRESH(index, xi.interface),
gmi_tx_thresh.u64);
__cvmx_helper_bgx_sgmii_hardware_init_one_time(xiface, index);
gmp_txx_append.u64 = csr_rd_node(
xi.node,
CVMX_BGXX_GMP_GMI_TXX_APPEND(index, xi.interface));
gmp_sgmii_ctl.u64 = csr_rd_node(
xi.node,
CVMX_BGXX_GMP_GMI_TXX_SGMII_CTL(index, xi.interface));
gmp_sgmii_ctl.s.align = gmp_txx_append.s.preamble ? 0 : 1;
csr_wr_node(xi.node,
CVMX_BGXX_GMP_GMI_TXX_SGMII_CTL(index,
xi.interface),
gmp_sgmii_ctl.u64);
if (mode == CVMX_HELPER_INTERFACE_MODE_RGMII) {
/* Disable XCV interface when initialized */
union cvmx_xcv_reset xcv_reset;
if (debug)
debug("%s: Disabling RGMII XCV interface\n",
__func__);
xcv_reset.u64 = csr_rd(CVMX_XCV_RESET);
xcv_reset.s.enable = 0;
xcv_reset.s.tx_pkt_rst_n = 0;
xcv_reset.s.rx_pkt_rst_n = 0;
csr_wr(CVMX_XCV_RESET, xcv_reset.u64);
}
} else {
int res, cred;
cvmx_bgxx_smux_tx_thresh_t smu_tx_thresh;
res = __cvmx_helper_bgx_xaui_init(index, xiface);
if (res == -1) {
#ifdef DEBUG_BGX
debug("Failed to enable XAUI for %d:BGX(%d,%d)\n",
xi.node, xi.interface, index);
#endif
return res;
}
/* See BVX_SMU_TX_THRESH register descriptin */
cred = __cvmx_helper_bgx_fifo_size(xiface, index) >> 4;
smu_tx_thresh.u64 = 0;
smu_tx_thresh.s.cnt = cred - 10;
csr_wr_node(xi.node,
CVMX_BGXX_SMUX_TX_THRESH(index, xi.interface),
smu_tx_thresh.u64);
if (debug)
debug("%s: BGX%d:%d TX-thresh=%d\n", __func__,
xi.interface, index,
(unsigned int)smu_tx_thresh.s.cnt);
/* Set disparity for RXAUI interface as described in the
* Marvell RXAUI Interface specification.
*/
if (mode == CVMX_HELPER_INTERFACE_MODE_RXAUI && phy_pres) {
cvmx_bgxx_spux_misc_control_t misc_control;
misc_control.u64 = csr_rd_node(
xi.node, CVMX_BGXX_SPUX_MISC_CONTROL(
index, xi.interface));
misc_control.s.intlv_rdisp = 1;
csr_wr_node(xi.node,
CVMX_BGXX_SPUX_MISC_CONTROL(index,
xi.interface),
misc_control.u64);
}
}
return 0;
}
/**
* @INTERNAL
* Configure a port for internal and/or external loopback. Internal loopback
* causes packets sent by the port to be received by Octeon. External loopback
* causes packets received from the wire to sent out again. This is used by
* interfaces using the bgx mac.
*
* @param xipd_port IPD/PKO port to loopback.
* @param enable_internal
* Non zero if you want internal loopback
* @param enable_external
* Non zero if you want external loopback
*
* @return Zero on success, negative on failure.
*/
int __cvmx_helper_bgx_sgmii_configure_loopback(int xipd_port,
int enable_internal,
int enable_external)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(xipd_port);
int node = xi.node;
int index = cvmx_helper_get_interface_index_num(xp.port);
cvmx_bgxx_gmp_pcs_mrx_control_t gmp_mrx_control;
cvmx_bgxx_gmp_pcs_miscx_ctl_t gmp_misc_ctl;
if (!cvmx_helper_is_port_valid(xiface, index))
return 0;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
if (cvmx_helper_bgx_is_rgmii(xi.interface, index)) {
cvmx_xcv_ctl_t xcv_ctl;
cvmx_helper_link_info_t link_info;
xcv_ctl.u64 = csr_rd(CVMX_XCV_CTL);
xcv_ctl.s.lpbk_int = enable_internal;
xcv_ctl.s.lpbk_ext = enable_external;
csr_wr(CVMX_XCV_CTL, xcv_ctl.u64);
/* Initialize link and speed */
__cvmx_helper_bgx_sgmii_hardware_init_link(xiface, index);
link_info = __cvmx_helper_bgx_sgmii_link_get(xipd_port);
__cvmx_helper_bgx_sgmii_hardware_init_link_speed(xiface, index,
link_info);
__cvmx_helper_bgx_rgmii_speed(link_info);
} else {
gmp_mrx_control.u64 = csr_rd_node(
node,
CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface));
gmp_mrx_control.s.loopbck1 = enable_internal;
csr_wr_node(node,
CVMX_BGXX_GMP_PCS_MRX_CONTROL(index, xi.interface),
gmp_mrx_control.u64);
gmp_misc_ctl.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface));
gmp_misc_ctl.s.loopbck2 = enable_external;
csr_wr_node(node,
CVMX_BGXX_GMP_PCS_MISCX_CTL(index, xi.interface),
gmp_misc_ctl.u64);
__cvmx_helper_bgx_sgmii_hardware_init_link(xiface, index);
}
return 0;
}
static int __cvmx_helper_bgx_xaui_link_init(int index, int xiface)
{
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int node = xi.node;
cvmx_bgxx_spux_status1_t spu_status1;
cvmx_bgxx_spux_status2_t spu_status2;
cvmx_bgxx_spux_br_status2_t br_status2;
cvmx_bgxx_spux_int_t spu_int;
cvmx_bgxx_spux_misc_control_t spu_misc_control;
cvmx_bgxx_spux_an_control_t spu_an_control;
cvmx_bgxx_spux_an_status_t spu_an_status;
cvmx_bgxx_spux_br_pmd_control_t pmd_control;
cvmx_bgxx_cmrx_config_t cmr_config;
cvmx_helper_interface_mode_t mode;
int use_training = 0;
int rgmii_first = 0;
int qlm = cvmx_qlm_lmac(xiface, index);
int use_ber = 0;
u64 err_blks;
u64 ber_cnt;
u64 error_debounce;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
rgmii_first = cvmx_helper_bgx_is_rgmii(xi.interface, index);
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_10G_KR ||
mode == CVMX_HELPER_INTERFACE_MODE_40G_KR4)
use_training = 1;
if ((mode == CVMX_HELPER_INTERFACE_MODE_XFI ||
mode == CVMX_HELPER_INTERFACE_MODE_XLAUI ||
mode == CVMX_HELPER_INTERFACE_MODE_10G_KR ||
mode == CVMX_HELPER_INTERFACE_MODE_40G_KR4))
use_ber = 1;
/* Disable packet reception, CMR as well as SPU block */
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
cmr_config.s.data_pkt_tx_en = 0;
cmr_config.s.data_pkt_rx_en = 0;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
spu_misc_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface));
spu_misc_control.s.rx_packet_dis = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface),
spu_misc_control.u64);
spu_an_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_AN_CONTROL(index, xi.interface));
if (spu_an_control.s.an_en) {
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
cvmx_bgxx_spux_int_t spu_int;
spu_int.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_INT(index, xi.interface));
if (!spu_int.s.an_link_good) {
static u64 restart_auto_neg[2][6][4] = {
[0 ... 1][0 ... 5] = { [0 ... 3] = 0 }
};
u64 now = get_timer(0);
u64 next_restart =
restart_auto_neg[node][xi.interface]
[index] +
2000;
if (now >= next_restart)
return -1;
restart_auto_neg[node][xi.interface][index] =
now;
/* Clear the auto negotiation (W1C) */
spu_int.u64 = 0;
spu_int.s.an_complete = 1;
spu_int.s.an_link_good = 1;
spu_int.s.an_page_rx = 1;
csr_wr_node(node,
CVMX_BGXX_SPUX_INT(index,
xi.interface),
spu_int.u64);
/* Restart auto negotiation */
spu_an_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_AN_CONTROL(
index, xi.interface));
spu_an_control.s.an_restart = 1;
csr_wr_node(node,
CVMX_BGXX_SPUX_AN_CONTROL(
index, xi.interface),
spu_an_control.u64);
return -1;
}
} else {
spu_an_status.u64 = csr_rd_node(
node,
CVMX_BGXX_SPUX_AN_STATUS(index, xi.interface));
if (!spu_an_status.s.an_complete) {
static u64 restart_auto_neg[2][6][4] = {
[0 ... 1][0 ... 5] = { [0 ... 3] = 0 }
};
u64 now = get_timer(0);
u64 next_restart =
restart_auto_neg[node][xi.interface]
[index] +
2000;
if (now >= next_restart) {
#ifdef DEBUG_BGX
debug("WARNING: BGX%d:%d: Waiting for autoneg to complete\n",
xi.interface, index);
#endif
return -1;
}
restart_auto_neg[node][xi.interface][index] =
now;
/* Restart auto negotiation */
spu_an_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_AN_CONTROL(
index, xi.interface));
spu_an_control.s.an_restart = 1;
csr_wr_node(node,
CVMX_BGXX_SPUX_AN_CONTROL(
index, xi.interface),
spu_an_control.u64);
return -1;
}
}
}
if (use_training) {
spu_int.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_INT(index, xi.interface));
pmd_control.u64 = csr_rd_node(
node,
CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, xi.interface));
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) &&
pmd_control.s.train_en == 0) {
__cvmx_bgx_start_training(node, xi.interface, index);
return -1;
}
cvmx_qlm_gser_errata_27882(node, qlm, index);
spu_int.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_INT(index, xi.interface));
if (spu_int.s.training_failure &&
!OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
__cvmx_bgx_restart_training(node, xi.interface, index);
return -1;
}
if (!spu_int.s.training_done) {
debug("Waiting for link training\n");
return -1;
}
}
/* (GSER-21957) GSER RX Equalization may make >= 5gbaud non-KR
* channel with DXAUI, RXAUI, XFI and XLAUI, we need to perform
* RX equalization when the link is receiving data the first time
*/
if (use_training == 0) {
int lane = index;
cvmx_bgxx_spux_control1_t control1;
cmr_config.u64 = csr_rd_node(
node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
control1.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface));
if (control1.s.loopbck) {
/* Skip RX equalization when in loopback */
} else if (mode == CVMX_HELPER_INTERFACE_MODE_XLAUI ||
mode == CVMX_HELPER_INTERFACE_MODE_XAUI) {
lane = -1;
if (__cvmx_qlm_rx_equalization(node, qlm, lane)) {
#ifdef DEBUG_BGX
debug("%d:%d:%d: Waiting for RX Equalization on QLM%d\n",
node, xi.interface, index, qlm);
#endif
return -1;
}
/* If BGX2 uses both dlms, then configure other dlm also. */
if (OCTEON_IS_MODEL(OCTEON_CN73XX) &&
xi.interface == 2) {
if (__cvmx_qlm_rx_equalization(node, 6, lane)) {
#ifdef DEBUG_BGX
debug("%d:%d:%d: Waiting for RX Equalization on QLM%d\n",
node, xi.interface, index, qlm);
#endif
return -1;
}
}
/* RXAUI */
} else if (mode == CVMX_HELPER_INTERFACE_MODE_RXAUI) {
lane = index * 2;
if (OCTEON_IS_MODEL(OCTEON_CN73XX) && index >= 2 &&
xi.interface == 2) {
lane = 0;
}
if (rgmii_first)
lane--;
if (__cvmx_qlm_rx_equalization(node, qlm, lane) ||
__cvmx_qlm_rx_equalization(node, qlm, lane + 1)) {
#ifdef DEBUG_BGX
debug("%d:%d:%d: Waiting for RX Equalization on QLM%d\n",
node, xi.interface, index, qlm);
#endif
return -1;
}
/* XFI */
} else if (cmr_config.s.lmac_type != 5) {
if (rgmii_first)
lane--;
if (OCTEON_IS_MODEL(OCTEON_CN73XX) && index >= 2 &&
xi.interface == 2) {
lane = index - 2;
} else if (OCTEON_IS_MODEL(OCTEON_CNF75XX) &&
index >= 2) {
lane = index - 2;
}
if (__cvmx_qlm_rx_equalization(node, qlm, lane)) {
#ifdef DEBUG_BGX
debug("%d:%d:%d: Waiting for RX Equalization on QLM%d\n",
node, xi.interface, index, qlm);
#endif
return -1;
}
}
}
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface),
cvmx_bgxx_spux_control1_t, reset, ==, 0, 10000)) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: PCS in reset", node, xi.interface,
index);
#endif
return -1;
}
if (use_ber) {
if (CVMX_WAIT_FOR_FIELD64_NODE(
node,
CVMX_BGXX_SPUX_BR_STATUS1(index, xi.interface),
cvmx_bgxx_spux_br_status1_t, blk_lock, ==, 1,
10000)) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: BASE-R PCS block not locked\n",
node, xi.interface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_XLAUI ||
mode == CVMX_HELPER_INTERFACE_MODE_40G_KR4) {
cvmx_bgxx_spux_br_algn_status_t bstatus;
bstatus.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_BR_ALGN_STATUS(
index, xi.interface));
debug("ERROR: %d:BGX%d:%d: LANE BLOCK_LOCK:%x LANE MARKER_LOCK:%x\n",
node, xi.interface, index,
bstatus.s.block_lock,
bstatus.s.marker_lock);
}
#endif
return -1;
}
} else {
/* (5) Check to make sure that the link appears up and stable.
*/
/* Wait for PCS to be aligned */
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_SPUX_BX_STATUS(index, xi.interface),
cvmx_bgxx_spux_bx_status_t, alignd, ==, 1, 10000)) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: PCS not aligned\n", node,
xi.interface, index);
#endif
return -1;
}
}
if (use_ber) {
/* Set the BGXX_SPUX_BR_STATUS2.latched_lock bit (latching low).
* This will be checked prior to enabling packet tx and rx,
* ensuring block lock is sustained throughout the BGX link-up
* procedure
*/
br_status2.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_BR_STATUS2(index, xi.interface));
br_status2.s.latched_lock = 1;
csr_wr_node(node,
CVMX_BGXX_SPUX_BR_STATUS2(index, xi.interface),
br_status2.u64);
}
/* Clear rcvflt bit (latching high) and read it back */
spu_status2.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_STATUS2(index, xi.interface));
spu_status2.s.rcvflt = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_STATUS2(index, xi.interface),
spu_status2.u64);
spu_status2.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_STATUS2(index, xi.interface));
if (spu_status2.s.rcvflt) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: Receive fault, need to retry\n",
node, xi.interface, index);
#endif
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && use_training)
__cvmx_bgx_restart_training(node, xi.interface, index);
/* debug("training restarting\n"); */
return -1;
}
/* Wait for MAC RX to be ready */
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_SMUX_RX_CTL(index, xi.interface),
cvmx_bgxx_smux_rx_ctl_t, status, ==, 0, 10000)) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: RX not ready\n", node, xi.interface,
index);
#endif
return -1;
}
/* Wait for BGX RX to be idle */
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_SMUX_CTRL(index, xi.interface),
cvmx_bgxx_smux_ctrl_t, rx_idle, ==, 1, 10000)) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: RX not idle\n", node, xi.interface,
index);
#endif
return -1;
}
/* Wait for GMX TX to be idle */
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_SMUX_CTRL(index, xi.interface),
cvmx_bgxx_smux_ctrl_t, tx_idle, ==, 1, 10000)) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: TX not idle\n", node, xi.interface,
index);
#endif
return -1;
}
/* rcvflt should still be 0 */
spu_status2.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_STATUS2(index, xi.interface));
if (spu_status2.s.rcvflt) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: Receive fault, need to retry\n",
node, xi.interface, index);
#endif
return -1;
}
/* Receive link is latching low. Force it high and verify it */
spu_status1.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_STATUS1(index, xi.interface));
spu_status1.s.rcv_lnk = 1;
csr_wr_node(node, CVMX_BGXX_SPUX_STATUS1(index, xi.interface),
spu_status1.u64);
if (CVMX_WAIT_FOR_FIELD64_NODE(
node, CVMX_BGXX_SPUX_STATUS1(index, xi.interface),
cvmx_bgxx_spux_status1_t, rcv_lnk, ==, 1, 10000)) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: Receive link down\n", node,
xi.interface, index);
#endif
return -1;
}
if (use_ber) {
/* Clearing BER_CNT and ERR_BLKs */
br_status2.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_BR_STATUS2(index, xi.interface));
/* If set, clear the LATCHED_BER by writing it to a one. */
if (br_status2.s.latched_ber)
csr_wr_node(node,
CVMX_BGXX_SPUX_BR_STATUS2(index,
xi.interface),
br_status2.u64);
error_debounce = get_timer(0);
/* Clear error counts */
err_blks = 0;
ber_cnt = 0;
/* Verify that the link is up and error free for 100ms */
while (get_timer(error_debounce) < 100) {
spu_status1.u64 = csr_rd_node(
node,
CVMX_BGXX_SPUX_STATUS1(index, xi.interface));
/* Checking that Receive link is still up (rcv_lnk = 1 (up)) */
if (!spu_status1.s.rcv_lnk) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: Receive link down\n",
node, xi.interface, index);
#endif
return -1;
}
/* Checking if latched_ber = 1 (BER >= 10e^4) */
br_status2.u64 = csr_rd_node(
node,
CVMX_BGXX_SPUX_BR_STATUS2(index, xi.interface));
err_blks += br_status2.s.err_blks;
ber_cnt += br_status2.s.ber_cnt;
if (br_status2.s.latched_ber) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: BER test failed, BER >= 10e^4, need to retry\n",
node, xi.interface, index);
#endif
return -1;
}
/* Checking that latched BLOCK_LOCK is still set (Block Lock never lost) */
if (!br_status2.s.latched_lock) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: BASE-R PCS block lock lost, need to retry\n",
node, xi.interface, index);
#endif
return -1;
}
/* Check error counters. Must be 0 (this error rate#
* is much higher than 1E-12)
*/
if (err_blks > 0) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: BASE-R errored-blocks (%llu) detected, need to retry\n",
node, xi.interface, index,
(unsigned long long)err_blks);
#endif
return -1;
}
if (ber_cnt > 0) {
#ifdef DEBUG_BGX
debug("ERROR: %d:BGX%d:%d: BASE-R bit-errors (%llu) detected, need to retry\n",
node, xi.interface, index,
(unsigned long long)ber_cnt);
#endif
return -1;
}
udelay(1000);
}
/* Clear out the BGX error counters/bits. These errors are
* expected as part of the BGX link up procedure
*/
/* BIP_ERR counters clear as part of this read */
csr_rd_node(node,
CVMX_BGXX_SPUX_BR_BIP_ERR_CNT(index, xi.interface));
/* BER_CNT and ERR_BLKs clear as part of this read */
br_status2.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_BR_STATUS2(index, xi.interface));
}
/* (7) Enable packet transmit and receive */
spu_misc_control.u64 = csr_rd_node(
node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface));
spu_misc_control.s.rx_packet_dis = 0;
csr_wr_node(node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface),
spu_misc_control.u64);
if (debug)
debug("%s: Enabling tx and rx data packets\n", __func__);
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
cmr_config.s.data_pkt_tx_en = 1;
cmr_config.s.data_pkt_rx_en = 1;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
return 0;
}
int __cvmx_helper_bgx_xaui_enable(int xiface)
{
int index;
cvmx_helper_interface_mode_t mode;
int num_ports = cvmx_helper_ports_on_interface(xiface);
for (index = 0; index < num_ports; index++) {
int res;
int xipd_port = cvmx_helper_get_ipd_port(xiface, index);
int phy_pres;
struct cvmx_xiface xi =
cvmx_helper_xiface_to_node_interface(xiface);
static int count
[CVMX_MAX_NODES][CVMX_HELPER_MAX_IFACE]
[CVMX_HELPER_CFG_MAX_PORT_PER_IFACE] = {
[0 ... CVMX_MAX_NODES -
1][0 ... CVMX_HELPER_MAX_IFACE -
1] = { [0 ... CVMX_HELPER_CFG_MAX_PORT_PER_IFACE -
1] = 0 }
};
mode = cvmx_helper_bgx_get_mode(xiface, index);
/* Set disparity for RXAUI interface as described in the
* Marvell RXAUI Interface specification.
*/
if (mode == CVMX_HELPER_INTERFACE_MODE_RXAUI &&
(cvmx_helper_get_port_phy_present(xiface, index)))
phy_pres = 1;
else
phy_pres = 0;
__cvmx_helper_bgx_port_init(xipd_port, phy_pres);
retry_link:
res = __cvmx_helper_bgx_xaui_link_init(index, xiface);
/* RX Equalization or autonegotiation can take little longer
* retry the link maybe 5 times for now
*/
if (res == -1 && count[xi.node][xi.interface][index] < 5) {
count[xi.node][xi.interface][index]++;
#ifdef DEBUG_BGX
debug("%d:BGX(%d,%d): Failed to get link, retrying\n",
xi.node, xi.interface, index);
#endif
goto retry_link;
}
if (res == -1) {
#ifdef DEBUG_BGX
debug("%d:BGX(%d,%d): Failed to get link\n", xi.node,
xi.interface, index);
#endif
continue;
}
}
return 0;
}
cvmx_helper_link_info_t __cvmx_helper_bgx_xaui_link_get(int xipd_port)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(xipd_port);
int index = cvmx_helper_get_interface_index_num(xp.port);
cvmx_bgxx_spux_status1_t spu_status1;
cvmx_bgxx_smux_tx_ctl_t smu_tx_ctl;
cvmx_bgxx_smux_rx_ctl_t smu_rx_ctl;
cvmx_bgxx_cmrx_config_t cmr_config;
cvmx_helper_link_info_t result;
cvmx_helper_interface_mode_t mode;
cvmx_bgxx_spux_misc_control_t spu_misc_control;
cvmx_bgxx_spux_br_status2_t br_status2;
result.u64 = 0;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_RGMII)
return __cvmx_helper_bgx_sgmii_link_get(xipd_port);
/* Reading current rx/tx link status */
spu_status1.u64 = csr_rd_node(
xi.node, CVMX_BGXX_SPUX_STATUS1(index, xi.interface));
smu_tx_ctl.u64 = csr_rd_node(
xi.node, CVMX_BGXX_SMUX_TX_CTL(index, xi.interface));
smu_rx_ctl.u64 = csr_rd_node(
xi.node, CVMX_BGXX_SMUX_RX_CTL(index, xi.interface));
/* Reading tx/rx packet enables */
cmr_config.u64 = csr_rd_node(
xi.node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
spu_misc_control.u64 = csr_rd_node(
xi.node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface));
if (smu_tx_ctl.s.ls == 0 && smu_rx_ctl.s.status == 0 &&
cmr_config.s.data_pkt_tx_en == 1 &&
cmr_config.s.data_pkt_rx_en == 1 &&
spu_misc_control.s.rx_packet_dis == 0 &&
spu_status1.s.rcv_lnk) {
int lanes;
int qlm = cvmx_qlm_lmac(xiface, index);
u64 speed;
result.s.link_up = 1;
result.s.full_duplex = 1;
if (OCTEON_IS_MODEL(OCTEON_CN78XX))
speed = cvmx_qlm_get_gbaud_mhz_node(xi.node, qlm);
else
speed = cvmx_qlm_get_gbaud_mhz(qlm);
cmr_config.u64 = csr_rd_node(
xi.node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
switch (cmr_config.s.lmac_type) {
default:
case 1: // XAUI
speed = (speed * 8 + 5) / 10;
lanes = 4;
break;
case 2: // RXAUI
speed = (speed * 8 + 5) / 10;
lanes = 2;
break;
case 3: // XFI
speed = (speed * 64 + 33) / 66;
lanes = 1;
break;
case 4: // XLAUI
/* Adjust the speed when XLAUI is configured at 6.250Gbps */
if (speed == 6250)
speed = 6445;
speed = (speed * 64 + 33) / 66;
lanes = 4;
break;
}
if (debug)
debug("%s: baud: %llu, lanes: %d\n", __func__,
(unsigned long long)speed, lanes);
speed *= lanes;
result.s.speed = speed;
} else {
int res;
u64 err_blks = 0;
u64 ber_cnt = 0;
/* Check for err_blk and ber errors if 10G or 40G */
if ((mode == CVMX_HELPER_INTERFACE_MODE_XFI ||
mode == CVMX_HELPER_INTERFACE_MODE_XLAUI ||
mode == CVMX_HELPER_INTERFACE_MODE_10G_KR ||
mode == CVMX_HELPER_INTERFACE_MODE_40G_KR4)) {
br_status2.u64 = csr_rd_node(
xi.node,
CVMX_BGXX_SPUX_BR_STATUS2(index, xi.interface));
err_blks = br_status2.s.err_blks;
ber_cnt = br_status2.s.ber_cnt;
}
/* Checking if the link is up and error-free but we are receiving remote-faults */
if (smu_tx_ctl.s.ls != 1 && smu_rx_ctl.s.status != 1 &&
cmr_config.s.data_pkt_tx_en == 1 &&
cmr_config.s.data_pkt_rx_en == 1 &&
spu_misc_control.s.rx_packet_dis == 0 &&
err_blks == 0 && ber_cnt == 0 &&
spu_status1.s.rcv_lnk) {
result.s.init_success = 1;
#ifdef DEBUG_BGX
debug("Receiving remote-fault ordered sets %d:BGX(%d,%d)\n",
xi.node, xi.interface, index);
#endif
} else {
res = __cvmx_helper_bgx_xaui_link_init(index, xiface);
if (res == -1) {
#ifdef DEBUG_BGX
debug("Failed to get %d:BGX(%d,%d) link\n",
xi.node, xi.interface, index);
#endif
} else {
#ifdef DEBUG_BGX
debug("Link initialization successful %d:BGX(%d,%d)\n",
xi.node, xi.interface, index);
#endif
result.s.init_success = 1;
}
}
}
return result;
}
int __cvmx_helper_bgx_xaui_link_set(int xipd_port,
cvmx_helper_link_info_t link_info)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(xipd_port);
int node = xi.node;
int index = cvmx_helper_get_interface_index_num(xp.port);
cvmx_bgxx_smux_tx_ctl_t smu_tx_ctl;
cvmx_bgxx_smux_rx_ctl_t smu_rx_ctl;
cvmx_bgxx_spux_status1_t spu_status1;
cvmx_helper_interface_mode_t mode;
cvmx_bgxx_cmrx_config_t cmr_config;
cvmx_bgxx_spux_misc_control_t spu_misc_control;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_RGMII)
return __cvmx_helper_bgx_sgmii_link_set(xipd_port, link_info);
/* Reading current rx/tx link status */
smu_tx_ctl.u64 =
csr_rd_node(node, CVMX_BGXX_SMUX_TX_CTL(index, xi.interface));
smu_rx_ctl.u64 =
csr_rd_node(node, CVMX_BGXX_SMUX_RX_CTL(index, xi.interface));
spu_status1.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_STATUS1(index, xi.interface));
/* Reading tx/rx packet enables */
cmr_config.u64 = csr_rd_node(
xi.node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
spu_misc_control.u64 = csr_rd_node(
xi.node, CVMX_BGXX_SPUX_MISC_CONTROL(index, xi.interface));
/* If the link shouldn't be up, then just return */
if (!link_info.s.link_up)
return 0;
/* Do nothing if both RX and TX are happy and packet
* transmission/reception is enabled
*/
if (smu_tx_ctl.s.ls == 0 && smu_rx_ctl.s.status == 0 &&
cmr_config.s.data_pkt_tx_en == 1 &&
cmr_config.s.data_pkt_rx_en == 1 &&
spu_misc_control.s.rx_packet_dis == 0 && spu_status1.s.rcv_lnk)
return 0;
/* Bring the link up */
return __cvmx_helper_bgx_xaui_link_init(index, xiface);
}
int __cvmx_helper_bgx_xaui_configure_loopback(int xipd_port,
int enable_internal,
int enable_external)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(xipd_port);
int node = xi.node;
int index = cvmx_helper_get_interface_index_num(xp.port);
cvmx_bgxx_spux_control1_t spu_control1;
cvmx_bgxx_smux_ext_loopback_t smu_ext_loopback;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
/* INT_BEAT_GEN must be set for loopback if the QLMs are not clocked.
* Set it whenever we use internal loopback
*/
if (enable_internal) {
cvmx_bgxx_cmrx_config_t cmr_config;
cmr_config.u64 = csr_rd_node(
node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
cmr_config.s.int_beat_gen = 1;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
}
/* Set the internal loop */
spu_control1.u64 =
csr_rd_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface));
spu_control1.s.loopbck = enable_internal;
csr_wr_node(node, CVMX_BGXX_SPUX_CONTROL1(index, xi.interface),
spu_control1.u64);
/* Set the external loop */
smu_ext_loopback.u64 = csr_rd_node(
node, CVMX_BGXX_SMUX_EXT_LOOPBACK(index, xi.interface));
smu_ext_loopback.s.en = enable_external;
csr_wr_node(node, CVMX_BGXX_SMUX_EXT_LOOPBACK(index, xi.interface),
smu_ext_loopback.u64);
return __cvmx_helper_bgx_xaui_link_init(index, xiface);
}
int __cvmx_helper_bgx_mixed_enable(int xiface)
{
int index;
int num_ports = cvmx_helper_ports_on_interface(xiface);
cvmx_helper_interface_mode_t mode;
for (index = 0; index < num_ports; index++) {
int xipd_port, phy_pres = 0;
if (!cvmx_helper_is_port_valid(xiface, index))
continue;
mode = cvmx_helper_bgx_get_mode(xiface, index);
xipd_port = cvmx_helper_get_ipd_port(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_RXAUI &&
(cvmx_helper_get_port_phy_present(xiface, index)))
phy_pres = 1;
if (__cvmx_helper_bgx_port_init(xipd_port, phy_pres))
continue;
/* For RGMII interface, initialize the link after PKO is setup */
if (mode == CVMX_HELPER_INTERFACE_MODE_RGMII)
continue;
/* Call SGMII init code for lmac_type = 0|5 */
else if (mode == CVMX_HELPER_INTERFACE_MODE_SGMII) {
int do_link_set = 1;
if (do_link_set)
__cvmx_helper_bgx_sgmii_link_set(
xipd_port,
__cvmx_helper_bgx_sgmii_link_get(
xipd_port));
/* All other lmac type call XAUI init code */
} else {
int res;
struct cvmx_xiface xi =
cvmx_helper_xiface_to_node_interface(xiface);
static int count
[CVMX_MAX_NODES][CVMX_HELPER_MAX_IFACE]
[CVMX_HELPER_CFG_MAX_PORT_PER_IFACE] = {
[0 ... CVMX_MAX_NODES -
1][0 ... CVMX_HELPER_MAX_IFACE -
1] = { [0 ... CVMX_HELPER_CFG_MAX_PORT_PER_IFACE -
1] = 0 }
};
retry_link:
res = __cvmx_helper_bgx_xaui_link_init(index, xiface);
/* RX Equalization or autonegotiation can take little
* longer retry the link maybe 5 times for now
*/
if (res == -1 &&
count[xi.node][xi.interface][index] < 5) {
count[xi.node][xi.interface][index]++;
goto retry_link;
}
if (res == -1) {
#ifdef DEBUG_BGX
debug("Failed to get %d:BGX(%d,%d) link\n",
xi.node, xi.interface, index);
#endif
continue;
}
}
}
return 0;
}
cvmx_helper_link_info_t __cvmx_helper_bgx_mixed_link_get(int xipd_port)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
int index = cvmx_helper_get_interface_index_num(xipd_port);
cvmx_helper_interface_mode_t mode;
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_SGMII ||
mode == CVMX_HELPER_INTERFACE_MODE_RGMII)
return __cvmx_helper_bgx_sgmii_link_get(xipd_port);
else
return __cvmx_helper_bgx_xaui_link_get(xipd_port);
}
int __cvmx_helper_bgx_mixed_link_set(int xipd_port,
cvmx_helper_link_info_t link_info)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
int index = cvmx_helper_get_interface_index_num(xipd_port);
cvmx_helper_interface_mode_t mode;
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_SGMII ||
mode == CVMX_HELPER_INTERFACE_MODE_RGMII)
return __cvmx_helper_bgx_sgmii_link_set(xipd_port, link_info);
else
return __cvmx_helper_bgx_xaui_link_set(xipd_port, link_info);
}
int __cvmx_helper_bgx_mixed_configure_loopback(int xipd_port,
int enable_internal,
int enable_external)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
int index = cvmx_helper_get_interface_index_num(xipd_port);
cvmx_helper_interface_mode_t mode;
mode = cvmx_helper_bgx_get_mode(xiface, index);
if (mode == CVMX_HELPER_INTERFACE_MODE_SGMII ||
mode == CVMX_HELPER_INTERFACE_MODE_RGMII)
return __cvmx_helper_bgx_sgmii_configure_loopback(
xipd_port, enable_internal, enable_external);
else
return __cvmx_helper_bgx_xaui_configure_loopback(
xipd_port, enable_internal, enable_external);
}
/**
* @INTERNAL
* Configure Priority-Based Flow Control (a.k.a. PFC/CBFC)
* on a specific BGX interface/port.
*/
void __cvmx_helper_bgx_xaui_config_pfc(unsigned int node,
unsigned int interface,
unsigned int index, bool pfc_enable)
{
int xiface = cvmx_helper_node_interface_to_xiface(node, interface);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
cvmx_bgxx_smux_cbfc_ctl_t cbfc_ctl;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
cbfc_ctl.u64 =
csr_rd_node(node, CVMX_BGXX_SMUX_CBFC_CTL(index, xi.interface));
/* Enable all PFC controls if requiested */
cbfc_ctl.s.rx_en = pfc_enable;
cbfc_ctl.s.tx_en = pfc_enable;
if (debug)
debug("%s: CVMX_BGXX_SMUX_CBFC_CTL(%d,%d)=%#llx\n", __func__,
index, xi.interface, (unsigned long long)cbfc_ctl.u64);
csr_wr_node(node, CVMX_BGXX_SMUX_CBFC_CTL(index, xi.interface),
cbfc_ctl.u64);
}
/**
* Function to control the generation of FCS, padding by the BGX
*
*/
void cvmx_helper_bgx_tx_options(unsigned int node, unsigned int interface,
unsigned int index, bool fcs_enable,
bool pad_enable)
{
cvmx_bgxx_cmrx_config_t cmr_config;
cvmx_bgxx_gmp_gmi_txx_append_t gmp_txx_append;
cvmx_bgxx_gmp_gmi_txx_min_pkt_t gmp_min_pkt;
cvmx_bgxx_smux_tx_min_pkt_t smu_min_pkt;
cvmx_bgxx_smux_tx_append_t smu_tx_append;
int xiface = cvmx_helper_node_interface_to_xiface(node, interface);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
if (!cvmx_helper_is_port_valid(xiface, index))
return;
if (debug)
debug("%s: interface %u:%d/%d, fcs: %s, pad: %s\n", __func__,
xi.node, xi.interface, index,
fcs_enable ? "true" : "false",
pad_enable ? "true" : "false");
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
(void)cmr_config; /* In case we need LMAC_TYPE later */
/* Setting options for both BGX subsystems, regardless of LMAC type */
/* Set GMP (SGMII) Tx options */
gmp_min_pkt.u64 = 0;
/* per HRM Sec 34.3.4.4 */
gmp_min_pkt.s.min_size = 59;
csr_wr_node(node, CVMX_BGXX_GMP_GMI_TXX_MIN_PKT(index, xi.interface),
gmp_min_pkt.u64);
gmp_txx_append.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_GMI_TXX_APPEND(index, xi.interface));
gmp_txx_append.s.fcs = fcs_enable;
gmp_txx_append.s.pad = pad_enable;
csr_wr_node(node, CVMX_BGXX_GMP_GMI_TXX_APPEND(index, xi.interface),
gmp_txx_append.u64);
/* Set SMUX (XAUI/XFI) Tx options */
/* HRM Sec 33.3.4.3 should read 64 */
smu_min_pkt.u64 = 0;
smu_min_pkt.s.min_size = 0x40;
csr_wr_node(node, CVMX_BGXX_SMUX_TX_MIN_PKT(index, xi.interface),
smu_min_pkt.u64);
smu_tx_append.u64 = csr_rd_node(
node, CVMX_BGXX_SMUX_TX_APPEND(index, xi.interface));
smu_tx_append.s.fcs_d = fcs_enable; /* Set data-packet FCS */
smu_tx_append.s.pad = pad_enable;
csr_wr_node(node, CVMX_BGXX_SMUX_TX_APPEND(index, xi.interface),
smu_tx_append.u64);
}
/**
* Set mac for the ipd_port
*
* @param xipd_port ipd_port to set the mac
* @param bcst If set, accept all broadcast packets
* @param mcst Multicast mode
* 0 = Force reject all multicast packets
* 1 = Force accept all multicast packets
* 2 = use the address filter CAM.
* @param mac mac address for the ipd_port, or 0 to disable MAC filtering
*/
void cvmx_helper_bgx_set_mac(int xipd_port, int bcst, int mcst, u64 mac)
{
int xiface = cvmx_helper_get_interface_num(xipd_port);
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int node = xi.node;
int index;
cvmx_bgxx_cmr_rx_adrx_cam_t adr_cam;
cvmx_bgxx_cmrx_rx_adr_ctl_t adr_ctl;
cvmx_bgxx_cmrx_config_t cmr_config;
int saved_state_tx, saved_state_rx;
index = cvmx_helper_get_interface_index_num(xipd_port);
if (!cvmx_helper_is_port_valid(xiface, index))
return;
if (debug)
debug("%s: interface %u:%d/%d\n", __func__, xi.node,
xi.interface, index);
cmr_config.u64 =
csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface));
saved_state_tx = cmr_config.s.data_pkt_tx_en;
saved_state_rx = cmr_config.s.data_pkt_rx_en;
cmr_config.s.data_pkt_tx_en = 0;
cmr_config.s.data_pkt_rx_en = 0;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
/* Set the mac */
adr_cam.u64 = 0;
adr_cam.s.id = index;
if (mac != 0ull)
adr_cam.s.en = 1;
adr_cam.s.adr = mac;
csr_wr_node(node, CVMX_BGXX_CMR_RX_ADRX_CAM(index * 8, xi.interface),
adr_cam.u64);
adr_ctl.u64 = csr_rd_node(
node, CVMX_BGXX_CMRX_RX_ADR_CTL(index, xi.interface));
if (mac != 0ull)
adr_ctl.s.cam_accept =
1; /* Accept the packet on DMAC CAM address */
else
adr_ctl.s.cam_accept = 0; /* No filtering, promiscuous */
adr_ctl.s.mcst_mode = mcst; /* Use the address filter CAM */
adr_ctl.s.bcst_accept = bcst; /* Accept all broadcast packets */
csr_wr_node(node, CVMX_BGXX_CMRX_RX_ADR_CTL(index, xi.interface),
adr_ctl.u64);
/* Set SMAC for PAUSE frames */
csr_wr_node(node, CVMX_BGXX_GMP_GMI_SMACX(index, xi.interface), mac);
/* Restore back the interface state */
cmr_config.s.data_pkt_tx_en = saved_state_tx;
cmr_config.s.data_pkt_rx_en = saved_state_rx;
csr_wr_node(node, CVMX_BGXX_CMRX_CONFIG(index, xi.interface),
cmr_config.u64);
/* Wait 100ms after bringing up the link to give the PHY some time */
if (cmr_config.s.enable) {
cvmx_helper_interface_mode_t mode;
mode = cvmx_helper_bgx_get_mode(xiface, index);
__cvmx_helper_bgx_interface_enable_delay(mode);
}
}
/**
* Disables the sending of flow control (pause) frames on the specified
* BGX port(s).
*
* @param xiface Which xiface
* @param port_mask Mask (4bits) of which ports on the interface to disable
* backpressure on.
* 1 => disable backpressure
* 0 => enable backpressure
*
* @return 0 on success
* -1 on error
*
* FIXME: Should change the API to handle a single port in every
* invocation, for consistency with other API calls.
*/
int cvmx_bgx_set_backpressure_override(int xiface, unsigned int port_mask)
{
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
cvmx_bgxx_cmr_rx_ovr_bp_t rx_ovr_bp;
int node = xi.node;
if (xi.interface >= CVMX_HELPER_MAX_GMX)
return 0;
if (debug)
debug("%s: interface %u:%d port_mask=%#x\n", __func__, xi.node,
xi.interface, port_mask);
/* Check for valid arguments */
rx_ovr_bp.u64 = 0;
rx_ovr_bp.s.en = port_mask; /* Per port Enable back pressure override */
rx_ovr_bp.s.ign_fifo_bp =
port_mask; /* Ignore the RX FIFO full when computing BP */
csr_wr_node(node, CVMX_BGXX_CMR_RX_OVR_BP(xi.interface), rx_ovr_bp.u64);
return 0;
}
int cvmx_bgx_set_flowctl_mode(int xipd_port, cvmx_qos_proto_t qos,
cvmx_qos_pkt_mode_t fc_mode)
{
int node, xiface, iface, index, mode;
struct cvmx_xiface xi;
const struct {
int bck;
int drp;
} fcmode[4] = { [CVMX_QOS_PKT_MODE_HWONLY] = { 1, 1 },
[CVMX_QOS_PKT_MODE_SWONLY] = { 0, 0 },
[CVMX_QOS_PKT_MODE_HWSW] = { 1, 0 },
[CVMX_QOS_PKT_MODE_DROP] = { 0, 1 } };
xiface = cvmx_helper_get_interface_num(xipd_port);
xi = cvmx_helper_xiface_to_node_interface(xiface);
node = xi.node;
iface = xi.interface;
if (xi.interface >= CVMX_HELPER_MAX_GMX)
return 0;
index = cvmx_helper_get_interface_index_num(xipd_port);
mode = cvmx_helper_bgx_get_mode(xiface, index);
switch (mode) {
case CVMX_HELPER_INTERFACE_MODE_10G_KR:
case CVMX_HELPER_INTERFACE_MODE_40G_KR4:
case CVMX_HELPER_INTERFACE_MODE_XLAUI:
case CVMX_HELPER_INTERFACE_MODE_XFI:
case CVMX_HELPER_INTERFACE_MODE_RXAUI:
case CVMX_HELPER_INTERFACE_MODE_XAUI: {
cvmx_bgxx_smux_tx_ctl_t txctl;
cvmx_bgxx_smux_cbfc_ctl_t cbfc;
cvmx_bgxx_smux_rx_frm_ctl_t frmctl;
cvmx_bgxx_smux_hg2_control_t hg2ctl;
txctl.u64 =
csr_rd_node(node, CVMX_BGXX_SMUX_TX_CTL(index, iface));
cbfc.u64 = csr_rd_node(node,
CVMX_BGXX_SMUX_CBFC_CTL(index, iface));
frmctl.u64 = csr_rd_node(
node, CVMX_BGXX_SMUX_RX_FRM_CTL(index, iface));
hg2ctl.u64 = csr_rd_node(
node, CVMX_BGXX_SMUX_HG2_CONTROL(index, iface));
switch (qos) {
case CVMX_QOS_PROTO_PAUSE:
cbfc.u64 = 0;
hg2ctl.u64 = 0;
frmctl.s.ctl_bck = fcmode[fc_mode].bck;
frmctl.s.ctl_drp = fcmode[fc_mode].drp;
frmctl.s.ctl_mcst = 1;
txctl.s.l2p_bp_conv = 1;
break;
case CVMX_QOS_PROTO_PFC:
hg2ctl.u64 = 0;
hg2ctl.s.logl_en = 0xff;
frmctl.s.ctl_bck = fcmode[fc_mode].bck;
frmctl.s.ctl_drp = fcmode[fc_mode].drp;
frmctl.s.ctl_mcst = 1;
cbfc.s.bck_en = fcmode[fc_mode].bck;
cbfc.s.drp_en = fcmode[fc_mode].drp;
cbfc.s.phys_en = 0;
cbfc.s.logl_en = 0xff;
cbfc.s.tx_en = 1;
cbfc.s.rx_en = 1;
break;
case CVMX_QOS_PROTO_NONE:
cbfc.u64 = 0;
hg2ctl.u64 = 0;
frmctl.s.ctl_bck = fcmode[CVMX_QOS_PKT_MODE_DROP].bck;
frmctl.s.ctl_drp = fcmode[CVMX_QOS_PKT_MODE_DROP].drp;
txctl.s.l2p_bp_conv = 0;
break;
default:
break;
}
csr_wr_node(node, CVMX_BGXX_SMUX_CBFC_CTL(index, iface),
cbfc.u64);
csr_wr_node(node, CVMX_BGXX_SMUX_RX_FRM_CTL(index, iface),
frmctl.u64);
csr_wr_node(node, CVMX_BGXX_SMUX_HG2_CONTROL(index, iface),
hg2ctl.u64);
csr_wr_node(node, CVMX_BGXX_SMUX_TX_CTL(index, iface),
txctl.u64);
break;
}
case CVMX_HELPER_INTERFACE_MODE_SGMII:
case CVMX_HELPER_INTERFACE_MODE_RGMII: {
cvmx_bgxx_gmp_gmi_rxx_frm_ctl_t gmi_frmctl;
gmi_frmctl.u64 = csr_rd_node(
node, CVMX_BGXX_GMP_GMI_RXX_FRM_CTL(index, iface));
switch (qos) {
case CVMX_QOS_PROTO_PAUSE:
gmi_frmctl.s.ctl_bck = fcmode[fc_mode].bck;
gmi_frmctl.s.ctl_drp = fcmode[fc_mode].drp;
gmi_frmctl.s.ctl_mcst = 1;
break;
case CVMX_QOS_PROTO_NONE:
gmi_frmctl.s.ctl_bck =
fcmode[CVMX_QOS_PKT_MODE_DROP].bck;
gmi_frmctl.s.ctl_drp =
fcmode[CVMX_QOS_PKT_MODE_DROP].drp;
break;
default:
break;
}
csr_wr_node(node, CVMX_BGXX_GMP_GMI_RXX_FRM_CTL(index, iface),
gmi_frmctl.u64);
}
} /*switch*/
return 0;
}
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