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qemu / u-boot / 565ca6c4213c876a6ffe20331442b08ba16bc7eb / . / arch / mips / mach-octeon / cvmx-ilk.c
blob: 6223ff2c84b266e45999df091d6f9dbd67215006 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018-2022 Marvell International Ltd.
*
* Support library for the ILK
*/
#include <time.h>
#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-ciu-defs.h>
#include <mach/cvmx-gmxx-defs.h>
#include <mach/cvmx-gserx-defs.h>
#include <mach/cvmx-ilk-defs.h>
#include <mach/cvmx-ipd-defs.h>
#include <mach/cvmx-pcsx-defs.h>
#include <mach/cvmx-pcsxx-defs.h>
#include <mach/cvmx-pki-defs.h>
#include <mach/cvmx-pko-defs.h>
#include <mach/cvmx-xcv-defs.h>
#include <mach/cvmx-hwpko.h>
#include <mach/cvmx-ilk.h>
#include <mach/cvmx-pki.h>
#include <mach/cvmx-helper.h>
#include <mach/cvmx-helper-board.h>
#include <mach/cvmx-helper-cfg.h>
/*
* global configurations.
*
* for cn68, the default is {0xf, 0xf0}. to disable the 2nd ILK, set
* cvmx_ilk_lane_mask[CVMX_NUM_ILK_INTF] = {0xff, 0x0} and
* cvmx_ilk_chans[CVMX_NUM_ILK_INTF] = {8, 0}
*/
unsigned short cvmx_ilk_lane_mask[CVMX_MAX_NODES][CVMX_NUM_ILK_INTF] = {
[0 ... CVMX_MAX_NODES - 1] = { 0x000f, 0x00f0 }
};
int cvmx_ilk_chans[CVMX_MAX_NODES][CVMX_NUM_ILK_INTF] = {
[0 ... CVMX_MAX_NODES - 1] = { 8, 8 }
};
static cvmx_ilk_intf_t cvmx_ilk_intf_cfg[CVMX_MAX_NODES][CVMX_NUM_ILK_INTF];
cvmx_ilk_LA_mode_t cvmx_ilk_LA_mode[CVMX_NUM_ILK_INTF] = { { 0, 0 }, { 0, 0 } };
/**
* User-overrideable callback function that returns whether or not an interface
* should use look-aside mode.
*
* @param interface - interface being checked
* @param channel - channel number, can be 0 or 1 or -1 to see if LA mode
* should be enabled for the interface.
* @return 0 to not use LA-mode, 1 to use LA-mode.
*/
int cvmx_ilk_use_la_mode(int interface, int channel)
{
if (OCTEON_IS_MODEL(OCTEON_CN68XX_PASS1_0))
return 0;
if (interface >= CVMX_NUM_ILK_INTF) {
debug("ERROR: invalid interface=%d in %s\n",
interface, __func__);
return -1;
}
return cvmx_ilk_LA_mode[interface].ilk_LA_mode;
}
/**
* User-overrideable callback function that returns whether or not an interface
* in look-aside mode should enable the RX calendar.
*
* @param interface - interface to check
* @return 1 to enable RX calendar, 0 to disable RX calendar.
*
* NOTE: For the CN68XX pass 2.0 this will enable the RX calendar for interface
* 0 and not interface 1. It is up to the customer to override this behavior.
*/
int cvmx_ilk_la_mode_enable_rx_calendar(int interface)
{
/* There is an errata in the CN68XX pass 2.0 where if connected
* in a loopback configuration or back to back then only one interface
* can have the RX calendar enabled.
*/
if (interface >= CVMX_NUM_ILK_INTF) {
debug("ERROR: invalid interface=%d in %s\n",
interface, __func__);
return -1;
}
return cvmx_ilk_LA_mode[interface].ilk_LA_mode_cal_ena;
}
/**
* Initialize and start the ILK interface.
*
* @param interface The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param lane_mask the lane group for this interface
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_start_interface(int interface, unsigned short lane_mask)
{
int res = -1;
int other_intf, this_qlm, other_qlm;
unsigned short uni_mask;
cvmx_ilk_txx_cfg0_t ilk_txx_cfg0;
cvmx_ilk_rxx_cfg0_t ilk_rxx_cfg0;
cvmx_ilk_ser_cfg_t ilk_ser_cfg;
int node = (interface >> 4) & 0xf;
interface &= 0xf;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
if (lane_mask == 0)
return res;
/* check conflicts between 2 ilk interfaces. 1 lane can be assigned to 1
* interface only
*/
other_intf = !interface;
if (cvmx_ilk_lane_mask[node][other_intf] & lane_mask) {
debug("ILK%d:%d: %s: lane assignment conflict\n", node,
interface, __func__);
return res;
}
/* check the legality of the lane mask. interface 0 can have 8 lanes,
* while interface 1 can have 4 lanes at most
*/
uni_mask = lane_mask >> (interface * 4);
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
cvmx_mio_qlmx_cfg_t mio_qlmx_cfg, other_mio_qlmx_cfg;
if ((uni_mask != 0x1 && uni_mask != 0x3 && uni_mask != 0xf &&
uni_mask != 0xff) ||
(interface == 1 && lane_mask > 0xf0)) {
debug("ILK%d: %s: incorrect lane mask: 0x%x\n",
interface, __func__, uni_mask);
return res;
}
/* check the availability of qlms. qlm_cfg = 001 means the chip
* is fused to give this qlm to ilk
*/
this_qlm = interface + CVMX_ILK_QLM_BASE();
other_qlm = other_intf + CVMX_ILK_QLM_BASE();
mio_qlmx_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(this_qlm));
other_mio_qlmx_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(other_qlm));
if (mio_qlmx_cfg.s.qlm_cfg != 1 ||
(uni_mask == 0xff && other_mio_qlmx_cfg.s.qlm_cfg != 1)) {
debug("ILK%d: %s: qlm unavailable\n", interface,
__func__);
return res;
}
/* Has 8 lanes */
lane_mask &= 0xff;
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
int qlm;
unsigned short lane_mask_all = 0;
/* QLM 4 - QLM 7 can be configured for ILK. Get the lane mask
* of all the qlms that are configured for ilk
*/
for (qlm = 4; qlm < 8; qlm++) {
cvmx_gserx_cfg_t gserx_cfg;
cvmx_gserx_phy_ctl_t phy_ctl;
/* Make sure QLM is powered and out of reset */
phy_ctl.u64 =
csr_rd_node(node, CVMX_GSERX_PHY_CTL(qlm));
if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
continue;
/* Make sure QLM is in ILK mode */
gserx_cfg.u64 = csr_rd_node(node, CVMX_GSERX_CFG(qlm));
if (gserx_cfg.s.ila)
lane_mask_all |= ((1 << 4) - 1)
<< (4 * (qlm - 4));
}
if ((lane_mask_all & lane_mask) != lane_mask) {
debug("ILK%d: %s: incorrect lane mask: 0x%x\n",
interface, __func__, lane_mask);
return res;
}
}
/* power up the serdes */
ilk_ser_cfg.u64 = csr_rd_node(node, CVMX_ILK_SER_CFG);
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
if (ilk_ser_cfg.cn68xx.ser_pwrup == 0) {
ilk_ser_cfg.cn68xx.ser_rxpol_auto = 1;
ilk_ser_cfg.cn68xx.ser_rxpol = 0;
ilk_ser_cfg.cn68xx.ser_txpol = 0;
ilk_ser_cfg.cn68xx.ser_reset_n = 0xff;
ilk_ser_cfg.cn68xx.ser_haul = 0;
}
ilk_ser_cfg.cn68xx.ser_pwrup |=
((interface == 0) && (lane_mask > 0xf)) ?
0x3 :
(1 << interface);
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
ilk_ser_cfg.cn78xx.ser_rxpol_auto = 1;
ilk_ser_cfg.cn78xx.ser_rxpol = 0;
ilk_ser_cfg.cn78xx.ser_txpol = 0;
ilk_ser_cfg.cn78xx.ser_reset_n = 0xffff;
}
csr_wr_node(node, CVMX_ILK_SER_CFG, ilk_ser_cfg.u64);
if (OCTEON_IS_MODEL(OCTEON_CN68XX_PASS2_X)) {
/* Workaround for Errata (G-16467) */
int qlm = (interface) ? 2 : 1;
int start_qlm, end_qlm;
/* Apply the workaround to both the QLMs if configured for x8 lanes */
if (cvmx_pop(lane_mask) > 4) {
start_qlm = 1;
end_qlm = 2;
} else {
start_qlm = qlm;
end_qlm = qlm;
}
for (qlm = start_qlm; qlm <= end_qlm; qlm++) {
#ifdef CVMX_QLM_DUMP_STATE
debug("%s:%d: ILK%d: Applying workaround for Errata G-16467\n",
__func__, __LINE__, qlm);
cvmx_qlm_display_registers(qlm);
debug("\n");
#endif
/* This workaround only applies to QLMs running ILK at 6.25Ghz */
if ((cvmx_qlm_get_gbaud_mhz(qlm) == 6250) &&
(cvmx_qlm_jtag_get(qlm, 0, "clkf_byp") != 20)) {
udelay(100); /* Wait 100us for links to stabalize */
cvmx_qlm_jtag_set(qlm, -1, "clkf_byp", 20);
/* Allow the QLM to exit reset */
cvmx_qlm_jtag_set(qlm, -1, "cfg_rst_n_clr", 0);
udelay(100); /* Wait 100us for links to stabalize */
/* Allow TX on QLM */
cvmx_qlm_jtag_set(qlm, -1, "cfg_tx_idle_set",
0);
}
#ifdef CVMX_QLM_DUMP_STATE
debug("%s:%d: ILK%d: Done applying workaround for Errata G-16467\n",
__func__, __LINE__, qlm);
cvmx_qlm_display_registers(qlm);
debug("\n\n");
#endif
}
}
/* Initialize all calendar entries to xoff state */
__cvmx_ilk_clear_cal((node << 4) | interface);
/* Enable ILK LA mode if configured. */
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
if (cvmx_ilk_use_la_mode(interface, 0)) {
cvmx_ilk_txx_cfg1_t ilk_txx_cfg1;
cvmx_ilk_rxx_cfg1_t ilk_rxx_cfg1;
ilk_txx_cfg1.u64 = csr_rd(CVMX_ILK_TXX_CFG1(interface));
ilk_rxx_cfg1.u64 = csr_rd(CVMX_ILK_RXX_CFG1(interface));
ilk_txx_cfg1.s.la_mode = 1;
ilk_txx_cfg1.s.tx_link_fc_jam = 1;
ilk_txx_cfg1.s.rx_link_fc_ign = 1;
ilk_rxx_cfg1.s.la_mode = 1;
csr_wr(CVMX_ILK_TXX_CFG1(interface), ilk_txx_cfg1.u64);
csr_wr(CVMX_ILK_RXX_CFG1(interface), ilk_rxx_cfg1.u64);
cvmx_ilk_intf_cfg[node][interface].la_mode =
1; /* Enable look-aside mode */
} else {
cvmx_ilk_intf_cfg[node][interface].la_mode =
0; /* Disable look-aside mode */
}
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX))
cvmx_ilk_intf_cfg[node][interface].la_mode = 0;
/* configure the lane enable of the interface */
ilk_txx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_TXX_CFG0(interface));
ilk_rxx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG0(interface));
ilk_rxx_cfg0.s.lane_ena = lane_mask;
ilk_txx_cfg0.s.lane_ena = lane_mask;
csr_wr_node(node, CVMX_ILK_TXX_CFG0(interface), ilk_txx_cfg0.u64);
csr_wr_node(node, CVMX_ILK_RXX_CFG0(interface), ilk_rxx_cfg0.u64);
/* For 10.3125Gbs data rate, set SER_LIMIT to 0x3ff for x8 & x12 mode */
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
cvmx_gserx_lane_mode_t lmode0, lmode1;
lmode0.u64 = csr_rd_node(node, CVMX_GSERX_LANE_MODE(5));
lmode1.u64 = csr_rd_node(node, CVMX_GSERX_LANE_MODE(7));
if ((lmode0.s.lmode == 5 || lmode1.s.lmode == 5) &&
(lane_mask == 0xfff || lane_mask == 0xfff0 ||
lane_mask == 0xff || lane_mask == 0xff00)) {
cvmx_ilk_txx_cfg1_t ilk_txx_cfg1;
ilk_txx_cfg1.u64 =
csr_rd_node(node, CVMX_ILK_TXX_CFG1(interface));
ilk_txx_cfg1.s.ser_limit = 0x3ff;
csr_wr_node(node, CVMX_ILK_TXX_CFG1(interface),
ilk_txx_cfg1.u64);
}
}
/* write to local cache. for lane speed, if interface 0 has 8 lanes,
* assume both qlms have the same speed
*/
cvmx_ilk_intf_cfg[node][interface].intf_en = 1;
res = 0;
return res;
}
/**
* set pipe group base and length for the interface
*
* @param xiface The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param pipe_base the base of the pipe group
* @param pipe_len the length of the pipe group
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_set_pipe(int xiface, int pipe_base, unsigned int pipe_len)
{
int res = -1;
cvmx_ilk_txx_pipe_t ilk_txx_pipe;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int interface = xi.interface - CVMX_ILK_GBL_BASE();
if (!(OCTEON_IS_MODEL(OCTEON_CN68XX)))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
/* set them in ilk tx section */
ilk_txx_pipe.u64 = csr_rd_node(xi.node, CVMX_ILK_TXX_PIPE(interface));
ilk_txx_pipe.s.base = pipe_base;
ilk_txx_pipe.s.nump = pipe_len;
csr_wr_node(xi.node, CVMX_ILK_TXX_PIPE(interface), ilk_txx_pipe.u64);
res = 0;
return res;
}
/**
* set logical channels for tx
*
* @param interface The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param pch pointer to an array of pipe-channel pair
* @param num_chs the number of entries in the pipe-channel array
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_tx_set_channel(int interface, cvmx_ilk_pipe_chan_t *pch,
unsigned int num_chs)
{
int res = -1;
cvmx_ilk_txx_idx_pmap_t ilk_txx_idx_pmap;
cvmx_ilk_txx_mem_pmap_t ilk_txx_mem_pmap;
unsigned int i;
if (!(OCTEON_IS_MODEL(OCTEON_CN68XX)))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
if (!pch || num_chs > CVMX_ILK_MAX_PIPES)
return res;
if (cvmx_ilk_use_la_mode(interface, 0)) {
ilk_txx_idx_pmap.u64 = 0;
ilk_txx_mem_pmap.u64 = 0;
for (i = 0; i < num_chs; i++) {
ilk_txx_idx_pmap.s.index = pch->pipe;
ilk_txx_mem_pmap.s.channel = pch->chan;
ilk_txx_mem_pmap.s.remap = 1;
csr_wr(CVMX_ILK_TXX_IDX_PMAP(interface),
ilk_txx_idx_pmap.u64);
csr_wr(CVMX_ILK_TXX_MEM_PMAP(interface),
ilk_txx_mem_pmap.u64);
pch++;
}
} else {
/* write the pair to ilk tx */
ilk_txx_mem_pmap.u64 = 0;
ilk_txx_idx_pmap.u64 = 0;
for (i = 0; i < num_chs; i++) {
ilk_txx_idx_pmap.s.index = pch->pipe;
ilk_txx_mem_pmap.s.channel = pch->chan;
csr_wr(CVMX_ILK_TXX_IDX_PMAP(interface),
ilk_txx_idx_pmap.u64);
csr_wr(CVMX_ILK_TXX_MEM_PMAP(interface),
ilk_txx_mem_pmap.u64);
pch++;
}
}
res = 0;
return res;
}
/**
* set pkind for rx
*
* @param xiface The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param chpknd pointer to an array of channel-pkind pair
* @param num_pknd the number of entries in the channel-pkind array
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_rx_set_pknd(int xiface, cvmx_ilk_chan_pknd_t *chpknd,
unsigned int num_pknd)
{
int res = -1;
cvmx_ilk_rxf_idx_pmap_t ilk_rxf_idx_pmap;
unsigned int i;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int interface = xi.interface - CVMX_ILK_GBL_BASE();
if (!(OCTEON_IS_MODEL(OCTEON_CN68XX)))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
if (!chpknd || num_pknd > CVMX_ILK_MAX_PKNDS)
return res;
res = 0;
for (i = 0; i < num_pknd; i++) {
ilk_rxf_idx_pmap.u64 = 0;
/* write the pair to ilk rx. note the channels for different
* interfaces are given in *chpknd and interface is not used
* as a param
*/
if (chpknd->chan < 2 &&
cvmx_ilk_use_la_mode(interface, chpknd->chan)) {
ilk_rxf_idx_pmap.s.index =
interface * 256 + 128 + chpknd->chan;
csr_wr(CVMX_ILK_RXF_IDX_PMAP, ilk_rxf_idx_pmap.u64);
csr_wr(CVMX_ILK_RXF_MEM_PMAP, chpknd->pknd);
}
ilk_rxf_idx_pmap.s.index = interface * 256 + chpknd->chan;
csr_wr(CVMX_ILK_RXF_IDX_PMAP, ilk_rxf_idx_pmap.u64);
csr_wr(CVMX_ILK_RXF_MEM_PMAP, chpknd->pknd);
chpknd++;
}
return res;
}
/**
* configure calendar for rx
*
* @param intf The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param cal_depth the number of calendar entries
* @param pent pointer to calendar entries
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_rx_cal_conf(int intf, int cal_depth, cvmx_ilk_cal_entry_t *pent)
{
int res = -1, i;
cvmx_ilk_rxx_cfg0_t ilk_rxx_cfg0;
int num_entries;
int node = (intf >> 4) & 0xf;
int interface = intf & 0xf;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
if (cal_depth < CVMX_ILK_RX_MIN_CAL || cal_depth > CVMX_ILK_MAX_CAL ||
(OCTEON_IS_MODEL(OCTEON_CN68XX) && !pent))
return res;
/* mandatory link-level fc as workarounds for ILK-15397 and
* ILK-15479
*/
/* TODO: test effectiveness */
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
/* Update the calendar for each channel */
if ((cvmx_ilk_use_la_mode(interface, 0) == 0) ||
(cvmx_ilk_use_la_mode(interface, 0) &&
cvmx_ilk_la_mode_enable_rx_calendar(interface))) {
for (i = 0; i < cal_depth; i++) {
__cvmx_ilk_write_rx_cal_entry(
interface, i, pent[i].pipe_bpid);
}
}
/* Update the depth */
ilk_rxx_cfg0.u64 = csr_rd(CVMX_ILK_RXX_CFG0(interface));
num_entries = 1 + cal_depth + (cal_depth - 1) / 15;
ilk_rxx_cfg0.s.cal_depth = num_entries;
if (cvmx_ilk_use_la_mode(interface, 0)) {
ilk_rxx_cfg0.s.mproto_ign = 1;
ilk_rxx_cfg0.s.lnk_stats_ena = 1;
ilk_rxx_cfg0.s.lnk_stats_wrap = 1;
}
csr_wr(CVMX_ILK_RXX_CFG0(interface), ilk_rxx_cfg0.u64);
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
ilk_rxx_cfg0.u64 =
csr_rd_node(node, CVMX_ILK_RXX_CFG0(interface));
/*
* Make sure cal_ena is 0 for programming the calendar table,
* as per Errata ILK-19398
*/
ilk_rxx_cfg0.s.cal_ena = 0;
csr_wr_node(node, CVMX_ILK_RXX_CFG0(interface),
ilk_rxx_cfg0.u64);
for (i = 0; i < cal_depth; i++)
__cvmx_ilk_write_rx_cal_entry(intf, i, 0);
ilk_rxx_cfg0.u64 =
csr_rd_node(node, CVMX_ILK_RXX_CFG0(interface));
num_entries = 1 + cal_depth + (cal_depth - 1) / 15;
ilk_rxx_cfg0.s.cal_depth = num_entries;
csr_wr_node(node, CVMX_ILK_RXX_CFG0(interface),
ilk_rxx_cfg0.u64);
}
return 0;
}
/**
* set high water mark for rx
*
* @param intf The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param hi_wm high water mark for this interface
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_rx_set_hwm(int intf, int hi_wm)
{
int res = -1;
cvmx_ilk_rxx_cfg1_t ilk_rxx_cfg1;
int node = (intf >> 4) & 0xf;
int interface = intf & 0xf;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
if (hi_wm <= 0)
return res;
/* set the hwm */
ilk_rxx_cfg1.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG1(interface));
ilk_rxx_cfg1.s.rx_fifo_hwm = hi_wm;
csr_wr_node(node, CVMX_ILK_RXX_CFG1(interface), ilk_rxx_cfg1.u64);
res = 0;
return res;
}
/**
* enable calendar for rx
*
* @param intf The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param cal_ena enable or disable calendar
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_rx_cal_ena(int intf, unsigned char cal_ena)
{
int res = -1;
cvmx_ilk_rxx_cfg0_t ilk_rxx_cfg0;
int node = (intf >> 4) & 0xf;
int interface = intf & 0xf;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
if (cvmx_ilk_use_la_mode(interface, 0) &&
!cvmx_ilk_la_mode_enable_rx_calendar(interface))
return 0;
/* set the enable */
ilk_rxx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG0(interface));
ilk_rxx_cfg0.s.cal_ena = cal_ena;
csr_wr_node(node, CVMX_ILK_RXX_CFG0(interface), ilk_rxx_cfg0.u64);
csr_rd_node(node, CVMX_ILK_RXX_CFG0(interface));
res = 0;
return res;
}
/**
* set up calendar for rx
*
* @param intf The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param cal_depth the number of calendar entries
* @param pent pointer to calendar entries
* @param hi_wm high water mark for this interface
* @param cal_ena enable or disable calendar
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_cal_setup_rx(int intf, int cal_depth, cvmx_ilk_cal_entry_t *pent,
int hi_wm, unsigned char cal_ena)
{
int res = -1;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
res = cvmx_ilk_rx_cal_conf(intf, cal_depth, pent);
if (res < 0)
return res;
res = cvmx_ilk_rx_set_hwm(intf, hi_wm);
if (res < 0)
return res;
res = cvmx_ilk_rx_cal_ena(intf, cal_ena);
return res;
}
/**
* configure calendar for tx
*
* @param intf The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param cal_depth the number of calendar entries
* @param pent pointer to calendar entries
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_tx_cal_conf(int intf, int cal_depth, cvmx_ilk_cal_entry_t *pent)
{
int res = -1, i;
cvmx_ilk_txx_cfg0_t ilk_txx_cfg0;
int num_entries;
int node = (intf >> 4) & 0xf;
int interface = intf & 0xf;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
if (cal_depth < CVMX_ILK_TX_MIN_CAL || cal_depth > CVMX_ILK_MAX_CAL ||
(OCTEON_IS_MODEL(OCTEON_CN68XX) && !pent))
return res;
/* mandatory link-level fc as workarounds for ILK-15397 and
* ILK-15479
*/
/* TODO: test effectiveness */
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
/* Update the calendar for each channel */
for (i = 0; i < cal_depth; i++) {
__cvmx_ilk_write_tx_cal_entry(interface, i,
pent[i].pipe_bpid);
}
/* Set the depth (must be multiple of 8)*/
ilk_txx_cfg0.u64 = csr_rd(CVMX_ILK_TXX_CFG0(interface));
num_entries = 1 + cal_depth + (cal_depth - 1) / 15;
ilk_txx_cfg0.s.cal_depth = (num_entries + 7) & ~7;
csr_wr(CVMX_ILK_TXX_CFG0(interface), ilk_txx_cfg0.u64);
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
ilk_txx_cfg0.u64 =
csr_rd_node(node, CVMX_ILK_TXX_CFG0(interface));
/*
* Make sure cal_ena is 0 for programming the calendar table,
* as per Errata ILK-19398
*/
ilk_txx_cfg0.s.cal_ena = 0;
csr_wr_node(node, CVMX_ILK_TXX_CFG0(interface),
ilk_txx_cfg0.u64);
for (i = 0; i < cal_depth; i++)
__cvmx_ilk_write_tx_cal_entry(intf, i, 0);
ilk_txx_cfg0.u64 =
csr_rd_node(node, CVMX_ILK_TXX_CFG0(interface));
num_entries = 1 + cal_depth + (cal_depth - 1) / 15;
/* cal_depth[2:0] needs to be zero, round up */
ilk_txx_cfg0.s.cal_depth = (num_entries + 7) & 0x1f8;
csr_wr_node(node, CVMX_ILK_TXX_CFG0(interface),
ilk_txx_cfg0.u64);
}
return 0;
}
/**
* enable calendar for tx
*
* @param intf The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param cal_ena enable or disable calendar
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_tx_cal_ena(int intf, unsigned char cal_ena)
{
int res = -1;
cvmx_ilk_txx_cfg0_t ilk_txx_cfg0;
int node = (intf >> 4) & 0xf;
int interface = intf & 0xf;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
/* set the enable */
ilk_txx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_TXX_CFG0(interface));
ilk_txx_cfg0.s.cal_ena = cal_ena;
csr_wr_node(node, CVMX_ILK_TXX_CFG0(interface), ilk_txx_cfg0.u64);
csr_rd_node(node, CVMX_ILK_TXX_CFG0(interface));
res = 0;
return res;
}
/**
* set up calendar for tx
*
* @param intf The identifier of the packet interface to configure and
* use as a ILK interface. cn68xx has 2 interfaces: ilk0 and
* ilk1.
*
* @param cal_depth the number of calendar entries
* @param pent pointer to calendar entries
* @param cal_ena enable or disable calendar
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_cal_setup_tx(int intf, int cal_depth, cvmx_ilk_cal_entry_t *pent,
unsigned char cal_ena)
{
int res = -1;
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
res = cvmx_ilk_tx_cal_conf(intf, cal_depth, pent);
if (res < 0)
return res;
res = cvmx_ilk_tx_cal_ena(intf, cal_ena);
return res;
}
/* #define CVMX_ILK_STATS_ENA 1 */
#ifdef CVMX_ILK_STATS_ENA
static void cvmx_ilk_reg_dump_rx(int intf)
{
int i;
cvmx_ilk_rxx_cfg0_t ilk_rxx_cfg0;
cvmx_ilk_rxx_cfg1_t ilk_rxx_cfg1;
cvmx_ilk_rxx_int_t ilk_rxx_int;
cvmx_ilk_rxx_jabber_t ilk_rxx_jabber;
cvmx_ilk_rx_lnex_cfg_t ilk_rx_lnex_cfg;
cvmx_ilk_rx_lnex_int_t ilk_rx_lnex_int;
cvmx_ilk_gbl_cfg_t ilk_gbl_cfg;
cvmx_ilk_ser_cfg_t ilk_ser_cfg;
cvmx_ilk_rxf_idx_pmap_t ilk_rxf_idx_pmap;
cvmx_ilk_rxf_mem_pmap_t ilk_rxf_mem_pmap;
cvmx_ilk_rxx_idx_cal_t ilk_rxx_idx_cal;
cvmx_ilk_rxx_mem_cal0_t ilk_rxx_mem_cal0;
cvmx_ilk_rxx_mem_cal1_t ilk_rxx_mem_cal1;
int node = (intf >> 4) & 0xf;
int interface = intf & 0xf;
ilk_rxx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG0(interface));
debug("ilk rxx cfg0: 0x%16lx\n", ilk_rxx_cfg0.u64);
ilk_rxx_cfg1.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG1(interface));
debug("ilk rxx cfg1: 0x%16lx\n", ilk_rxx_cfg1.u64);
ilk_rxx_int.u64 = csr_rd_node(node, CVMX_ILK_RXX_INT(interface));
debug("ilk rxx int: 0x%16lx\n", ilk_rxx_int.u64);
csr_wr_node(node, CVMX_ILK_RXX_INT(interface), ilk_rxx_int.u64);
ilk_rxx_jabber.u64 = csr_rd_node(node, CVMX_ILK_RXX_JABBER(interface));
debug("ilk rxx jabber: 0x%16lx\n", ilk_rxx_jabber.u64);
#define LNE_NUM_DBG 4
for (i = 0; i < LNE_NUM_DBG; i++) {
ilk_rx_lnex_cfg.u64 =
csr_rd_node(node, CVMX_ILK_RX_LNEX_CFG(i));
debug("ilk rx lnex cfg lane: %d 0x%16lx\n", i,
ilk_rx_lnex_cfg.u64);
}
for (i = 0; i < LNE_NUM_DBG; i++) {
ilk_rx_lnex_int.u64 =
csr_rd_node(node, CVMX_ILK_RX_LNEX_INT(i));
debug("ilk rx lnex int lane: %d 0x%16lx\n", i,
ilk_rx_lnex_int.u64);
csr_wr_node(node, CVMX_ILK_RX_LNEX_INT(i), ilk_rx_lnex_int.u64);
}
ilk_gbl_cfg.u64 = csr_rd_node(node, CVMX_ILK_GBL_CFG);
debug("ilk gbl cfg: 0x%16lx\n", ilk_gbl_cfg.u64);
ilk_ser_cfg.u64 = csr_rd_node(node, CVMX_ILK_SER_CFG);
debug("ilk ser cfg: 0x%16lx\n", ilk_ser_cfg.u64);
#define CHAN_NUM_DBG 8
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
ilk_rxf_idx_pmap.u64 = 0;
ilk_rxf_idx_pmap.s.index = interface * 256;
ilk_rxf_idx_pmap.s.inc = 1;
csr_wr(CVMX_ILK_RXF_IDX_PMAP, ilk_rxf_idx_pmap.u64);
for (i = 0; i < CHAN_NUM_DBG; i++) {
ilk_rxf_mem_pmap.u64 = csr_rd(CVMX_ILK_RXF_MEM_PMAP);
debug("ilk rxf mem pmap chan: %3d 0x%16lx\n", i,
ilk_rxf_mem_pmap.u64);
}
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
cvmx_ilk_rxx_chax_t rxx_chax;
for (i = 0; i < CHAN_NUM_DBG; i++) {
rxx_chax.u64 = csr_rd_node(
node, CVMX_ILK_RXX_CHAX(i, interface));
debug("ilk chan: %d pki chan: 0x%x\n", i,
rxx_chax.s.port_kind);
}
}
#define CAL_NUM_DBG 2
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
ilk_rxx_idx_cal.u64 = 0;
ilk_rxx_idx_cal.s.inc = 1;
csr_wr(CVMX_ILK_RXX_IDX_CAL(interface), ilk_rxx_idx_cal.u64);
for (i = 0; i < CAL_NUM_DBG; i++) {
ilk_rxx_idx_cal.u64 =
csr_rd(CVMX_ILK_RXX_IDX_CAL(interface));
debug("ilk rxx idx cal: 0x%16lx\n",
ilk_rxx_idx_cal.u64);
ilk_rxx_mem_cal0.u64 =
csr_rd(CVMX_ILK_RXX_MEM_CAL0(interface));
debug("ilk rxx mem cal0: 0x%16lx\n",
ilk_rxx_mem_cal0.u64);
ilk_rxx_mem_cal1.u64 =
csr_rd(CVMX_ILK_RXX_MEM_CAL1(interface));
debug("ilk rxx mem cal1: 0x%16lx\n",
ilk_rxx_mem_cal1.u64);
}
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
cvmx_ilk_rxx_cal_entryx_t rxx_cal_entryx;
for (i = 0; i < CAL_NUM_DBG; i++) {
rxx_cal_entryx.u64 = csr_rd_node(
node, CVMX_ILK_RXX_CAL_ENTRYX(i, interface));
debug("ilk rxx cal idx: %d\n", i);
debug("ilk rxx cal ctl: 0x%x\n", rxx_cal_entryx.s.ctl);
debug("ilk rxx cal pko chan: 0x%x\n",
rxx_cal_entryx.s.channel);
}
}
}
static void cvmx_ilk_reg_dump_tx(int intf)
{
int i;
cvmx_ilk_txx_cfg0_t ilk_txx_cfg0;
cvmx_ilk_txx_cfg1_t ilk_txx_cfg1;
cvmx_ilk_txx_idx_pmap_t ilk_txx_idx_pmap;
cvmx_ilk_txx_mem_pmap_t ilk_txx_mem_pmap;
cvmx_ilk_txx_int_t ilk_txx_int;
cvmx_ilk_txx_pipe_t ilk_txx_pipe;
cvmx_ilk_txx_idx_cal_t ilk_txx_idx_cal;
cvmx_ilk_txx_mem_cal0_t ilk_txx_mem_cal0;
cvmx_ilk_txx_mem_cal1_t ilk_txx_mem_cal1;
int node = (intf >> 4) & 0xf;
int interface = intf & 0xf;
ilk_txx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_TXX_CFG0(interface));
debug("ilk txx cfg0: 0x%16lx\n", ilk_txx_cfg0.u64);
ilk_txx_cfg1.u64 = csr_rd_node(node, CVMX_ILK_TXX_CFG1(interface));
debug("ilk txx cfg1: 0x%16lx\n", ilk_txx_cfg1.u64);
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
ilk_txx_pipe.u64 = csr_rd(CVMX_ILK_TXX_PIPE(interface));
debug("ilk txx pipe: 0x%16lx\n", ilk_txx_pipe.u64);
ilk_txx_idx_pmap.u64 = 0;
ilk_txx_idx_pmap.s.index = ilk_txx_pipe.s.base;
ilk_txx_idx_pmap.s.inc = 1;
csr_wr(CVMX_ILK_TXX_IDX_PMAP(interface), ilk_txx_idx_pmap.u64);
for (i = 0; i < CHAN_NUM_DBG; i++) {
ilk_txx_mem_pmap.u64 =
csr_rd(CVMX_ILK_TXX_MEM_PMAP(interface));
debug("ilk txx mem pmap pipe: %3d 0x%16lx\n",
ilk_txx_pipe.s.base + i, ilk_txx_mem_pmap.u64);
}
}
ilk_txx_int.u64 = csr_rd_node(node, CVMX_ILK_TXX_INT(interface));
debug("ilk txx int: 0x%16lx\n", ilk_txx_int.u64);
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
ilk_txx_idx_cal.u64 = 0;
ilk_txx_idx_cal.s.inc = 1;
csr_wr(CVMX_ILK_TXX_IDX_CAL(interface), ilk_txx_idx_cal.u64);
for (i = 0; i < CAL_NUM_DBG; i++) {
ilk_txx_idx_cal.u64 =
csr_rd(CVMX_ILK_TXX_IDX_CAL(interface));
debug("ilk txx idx cal: 0x%16lx\n",
ilk_txx_idx_cal.u64);
ilk_txx_mem_cal0.u64 =
csr_rd(CVMX_ILK_TXX_MEM_CAL0(interface));
debug("ilk txx mem cal0: 0x%16lx\n",
ilk_txx_mem_cal0.u64);
ilk_txx_mem_cal1.u64 =
csr_rd(CVMX_ILK_TXX_MEM_CAL1(interface));
debug("ilk txx mem cal1: 0x%16lx\n",
ilk_txx_mem_cal1.u64);
}
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
cvmx_ilk_txx_cal_entryx_t txx_cal_entryx;
for (i = 0; i < CAL_NUM_DBG; i++) {
txx_cal_entryx.u64 = csr_rd_node(
node, CVMX_ILK_TXX_CAL_ENTRYX(i, interface));
debug("ilk txx cal idx: %d\n", i);
debug("ilk txx cal ctl: 0x%x\n", txx_cal_entryx.s.ctl);
debug("ilk txx cal pki chan: 0x%x\n",
txx_cal_entryx.s.channel);
}
}
}
#endif
/**
* show run time status
*
* @param interface The identifier of the packet interface to enable. cn68xx
* has 2 interfaces: ilk0 and ilk1.
*
* @return nothing
*/
#ifdef CVMX_ILK_RUNTIME_DBG
void cvmx_ilk_runtime_status(int interface)
{
cvmx_ilk_txx_cfg1_t ilk_txx_cfg1;
cvmx_ilk_txx_flow_ctl0_t ilk_txx_flow_ctl0;
cvmx_ilk_rxx_cfg1_t ilk_rxx_cfg1;
cvmx_ilk_rxx_int_t ilk_rxx_int;
cvmx_ilk_rxx_flow_ctl0_t ilk_rxx_flow_ctl0;
cvmx_ilk_rxx_flow_ctl1_t ilk_rxx_flow_ctl1;
cvmx_ilk_gbl_int_t ilk_gbl_int;
debug("\nilk run-time status: interface: %d\n", interface);
ilk_txx_cfg1.u64 = csr_rd_node(node, CVMX_ILK_TXX_CFG1(interface));
debug("\nilk txx cfg1: 0x%16lx\n", ilk_txx_cfg1.u64);
if (ilk_txx_cfg1.s.rx_link_fc)
debug("link flow control received\n");
if (ilk_txx_cfg1.s.tx_link_fc)
debug("link flow control sent\n");
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
ilk_txx_flow_ctl0.u64 =
csr_rd(CVMX_ILK_TXX_FLOW_CTL0(interface));
debug("\nilk txx flow ctl0: 0x%16lx\n", ilk_txx_flow_ctl0.u64);
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
int i;
cvmx_ilk_txx_cha_xonx_t txx_cha_xonx;
for (i = 0; i < 4; i++) {
txx_cha_xonx.u64 = csr_rd_node(
node, CVMX_ILK_TXX_CHA_XONX(i, interface));
debug("\nilk txx cha xon: 0x%16lx\n", txx_cha_xonx.u64);
}
}
ilk_rxx_cfg1.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG1(interface));
debug("\nilk rxx cfg1: 0x%16lx\n", ilk_rxx_cfg1.u64);
debug("rx fifo count: %d\n", ilk_rxx_cfg1.s.rx_fifo_cnt);
ilk_rxx_int.u64 = csr_rd_node(node, CVMX_ILK_RXX_INT(interface));
debug("\nilk rxx int: 0x%16lx\n", ilk_rxx_int.u64);
if (ilk_rxx_int.s.pkt_drop_rxf)
debug("rx fifo packet drop\n");
if (ilk_rxx_int.u64)
csr_wr_node(node, CVMX_ILK_RXX_INT(interface), ilk_rxx_int.u64);
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
ilk_rxx_flow_ctl0.u64 =
csr_rd(CVMX_ILK_RXX_FLOW_CTL0(interface));
debug("\nilk rxx flow ctl0: 0x%16lx\n", ilk_rxx_flow_ctl0.u64);
ilk_rxx_flow_ctl1.u64 =
csr_rd(CVMX_ILK_RXX_FLOW_CTL1(interface));
debug("\nilk rxx flow ctl1: 0x%16lx\n", ilk_rxx_flow_ctl1.u64);
}
if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
int i;
cvmx_ilk_rxx_cha_xonx_t rxx_cha_xonx;
for (i = 0; i < 4; i++) {
rxx_cha_xonx.u64 = csr_rd_node(
node, CVMX_ILK_RXX_CHA_XONX(i, interface));
debug("\nilk rxx cha xon: 0x%16lx\n", rxx_cha_xonx.u64);
}
}
ilk_gbl_int.u64 = csr_rd_node(node, CVMX_ILK_GBL_INT);
debug("\nilk gbl int: 0x%16lx\n", ilk_gbl_int.u64);
if (ilk_gbl_int.s.rxf_push_full)
debug("rx fifo overflow\n");
if (ilk_gbl_int.u64)
csr_wr_node(node, CVMX_ILK_GBL_INT, ilk_gbl_int.u64);
}
#endif
/**
* enable interface
*
* @param xiface The identifier of the packet interface to enable. cn68xx
* has 2 interfaces: ilk0 and ilk1.
*
* @return Zero on success, negative on failure.
*/
int cvmx_ilk_enable(int xiface)
{
int res = -1;
int retry_count = 0;
cvmx_helper_link_info_t result;
cvmx_ilk_txx_cfg1_t ilk_txx_cfg1;
cvmx_ilk_rxx_cfg1_t ilk_rxx_cfg1;
#ifdef CVMX_ILK_STATS_ENA
cvmx_ilk_rxx_cfg0_t ilk_rxx_cfg0;
cvmx_ilk_txx_cfg0_t ilk_txx_cfg0;
#endif
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int node = xi.node;
int interface = xi.interface - CVMX_ILK_GBL_BASE();
if (!octeon_has_feature(OCTEON_FEATURE_ILK))
return res;
if (interface >= CVMX_NUM_ILK_INTF)
return res;
result.u64 = 0;
#ifdef CVMX_ILK_STATS_ENA
debug("\n");
debug("<<<< ILK%d: Before enabling ilk\n", interface);
cvmx_ilk_reg_dump_rx(intf);
cvmx_ilk_reg_dump_tx(intf);
#endif
/* RX packet will be enabled only if link is up */
/* TX side */
ilk_txx_cfg1.u64 = csr_rd_node(node, CVMX_ILK_TXX_CFG1(interface));
ilk_txx_cfg1.s.pkt_ena = 1;
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
if (cvmx_ilk_use_la_mode(interface, 0)) {
ilk_txx_cfg1.s.la_mode = 1;
ilk_txx_cfg1.s.tx_link_fc_jam = 1;
}
}
csr_wr_node(node, CVMX_ILK_TXX_CFG1(interface), ilk_txx_cfg1.u64);
csr_rd_node(node, CVMX_ILK_TXX_CFG1(interface));
#ifdef CVMX_ILK_STATS_ENA
/* RX side stats */
ilk_rxx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG0(interface));
ilk_rxx_cfg0.s.lnk_stats_ena = 1;
csr_wr_node(node, CVMX_ILK_RXX_CFG0(interface), ilk_rxx_cfg0.u64);
/* TX side stats */
ilk_txx_cfg0.u64 = csr_rd_node(node, CVMX_ILK_TXX_CFG0(interface));
ilk_txx_cfg0.s.lnk_stats_ena = 1;
csr_wr_node(node, CVMX_ILK_TXX_CFG0(interface), ilk_txx_cfg0.u64);
#endif
retry:
retry_count++;
if (retry_count > 10)
goto out;
/* Make sure the link is up, so that packets can be sent. */
result = __cvmx_helper_ilk_link_get(
cvmx_helper_get_ipd_port((interface + CVMX_ILK_GBL_BASE()), 0));
/* Small delay before another retry. */
udelay(100);
ilk_rxx_cfg1.u64 = csr_rd_node(node, CVMX_ILK_RXX_CFG1(interface));
if (ilk_rxx_cfg1.s.pkt_ena == 0)
goto retry;
out:
#ifdef CVMX_ILK_STATS_ENA
debug(">>>> ILK%d: After ILK is enabled\n", interface);
cvmx_ilk_reg_dump_rx(intf);
cvmx_ilk_reg_dump_tx(intf);
#endif
if (result.s.link_up)
return 0;
return -1;
}
/**
* Provide interface enable status
*
* @param xiface The identifier of the packet xiface to disable. cn68xx
* has 2 interfaces: ilk0 and ilk1.
*
* @return Zero, not enabled; One, enabled.
*/
int cvmx_ilk_get_intf_ena(int xiface)
{
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int interface = xi.interface - CVMX_ILK_GBL_BASE();
return cvmx_ilk_intf_cfg[xi.node][interface].intf_en;
}