[PATCH v1 42/50] mips: octeon: Add cvmx-qlm.c

Stefan Roese
2020-12-11T16:06:04Z

Import cvmx-qlm.c from 2013 U-Boot. It will be used by the later
added drivers to support PCIe and networking on the MIPS Octeon II / III
platforms.

Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
---

arch/mips/mach-octeon/cvmx-qlm.c | 2350 ++++++++++++++++++++++++++++++
1 file changed, 2350 insertions(+)
create mode 100644 arch/mips/mach-octeon/cvmx-qlm.c

diff --git a/arch/mips/mach-octeon/cvmx-qlm.c b/arch/mips/mach-octeon/cvmx-qlm.c
new file mode 100644
index 0000000000..970e34aaff
--- /dev/null
+++ b/arch/mips/mach-octeon/cvmx-qlm.c
@@ -0,0 +1,2350 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Marvell International Ltd.
+ *
+ * Helper utilities for qlm.
+ */
+
+#include <log.h>
+#include <time.h>
+#include <asm/global_data.h>
+#include <linux/delay.h>
+
+#include <mach/cvmx-regs.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-helper.h>
+#include <mach/cvmx-helper-util.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-mio-defs.h>
+#include <mach/cvmx-pciercx-defs.h>
+#include <mach/cvmx-pemx-defs.h>
+#include <mach/cvmx-pexp-defs.h>
+#include <mach/cvmx-rst-defs.h>
+#include <mach/cvmx-sata-defs.h>
+#include <mach/cvmx-sli-defs.h>
+#include <mach/cvmx-sriomaintx-defs.h>
+#include <mach/cvmx-sriox-defs.h>
+
+#include <mach/cvmx-helper.h>
+#include <mach/cvmx-helper-jtag.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Their is a copy of this in bootloader qlm configuration, make sure
+ * to update both the places till i figure out
+ */
+#define R_25G_REFCLK100 0x0
+#define R_5G_REFCLK100 0x1
+#define R_8G_REFCLK100 0x2
+#define R_125G_REFCLK15625_KX 0x3
+#define R_3125G_REFCLK15625_XAUI 0x4
+#define R_103125G_REFCLK15625_KR 0x5
+#define R_125G_REFCLK15625_SGMII 0x6
+#define R_5G_REFCLK15625_QSGMII 0x7
+#define R_625G_REFCLK15625_RXAUI 0x8
+#define R_25G_REFCLK125 0x9
+#define R_5G_REFCLK125 0xa
+#define R_8G_REFCLK125 0xb
+
+static const int REF_100MHZ = 100000000;
+static const int REF_125MHZ = 125000000;
+static const int REF_156MHZ = 156250000;
+
+static qlm_jtag_uint32_t *__cvmx_qlm_jtag_xor_ref;
+
+/**
+ * Return the number of QLMs supported by the chip
+ *
+ * @return Number of QLMs
+ */
+int cvmx_qlm_get_num(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX))
+ return 5;
+ else if (OCTEON_IS_MODEL(OCTEON_CN66XX))
+ return 3;
+ else if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+ return 3;
+ else if (OCTEON_IS_MODEL(OCTEON_CN61XX))
+ return 3;
+ else if (OCTEON_IS_MODEL(OCTEON_CNF71XX))
+ return 2;
+ else if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ return 8;
+ else if (OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return 7;
+ else if (OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return 9;
+ return 0;
+}
+
+/**
+ * Return the qlm number based on the interface
+ *
+ * @param xiface interface to look up
+ *
+ * @return the qlm number based on the xiface
+ */
+int cvmx_qlm_interface(int xiface)
+{
+ struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN61XX)) {
+ return (xi.interface == 0) ? 2 : 0;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN63XX) || OCTEON_IS_MODEL(OCTEON_CN66XX)) {
+ return 2 - xi.interface;
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF71XX)) {
+ if (xi.interface == 0)
+ return 0;
+
+ debug("Warning: %s: Invalid interface %d\n",
+ __func__, xi.interface);
+ } else if (octeon_has_feature(OCTEON_FEATURE_BGX)) {
+ debug("Warning: not supported\n");
+ return -1;
+ }
+
+ /* Must be cn68XX */
+ switch (xi.interface) {
+ case 1:
+ return 0;
+ default:
+ return xi.interface;
+ }
+
+ return -1;
+}
+
+/**
+ * Return the qlm number based for a port in the interface
+ *
+ * @param xiface interface to look up
+ * @param index index in an interface
+ *
+ * @return the qlm number based on the xiface
+ */
+int cvmx_qlm_lmac(int xiface, int index)
+{
+ struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
+ cvmx_bgxx_cmr_global_config_t gconfig;
+ cvmx_gserx_phy_ctl_t phy_ctl;
+ cvmx_gserx_cfg_t gserx_cfg;
+ int qlm;
+
+ if (xi.interface < 6) {
+ if (xi.interface < 2) {
+ gconfig.u64 =
+ csr_rd_node(xi.node,
+ CVMX_BGXX_CMR_GLOBAL_CONFIG(xi.interface));
+ if (gconfig.s.pmux_sds_sel)
+ qlm = xi.interface + 2; /* QLM 2 or 3 */
+ else
+ qlm = xi.interface; /* QLM 0 or 1 */
+ } else {
+ qlm = xi.interface + 2; /* QLM 4-7 */
+ }
+
+ /* make sure the QLM is powered up and out of reset */
+ phy_ctl.u64 = csr_rd_node(xi.node, CVMX_GSERX_PHY_CTL(qlm));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ return -1;
+ gserx_cfg.u64 = csr_rd_node(xi.node, CVMX_GSERX_CFG(qlm));
+ if (gserx_cfg.s.bgx)
+ return qlm;
+ else
+ return -1;
+ } else if (xi.interface <= 7) { /* ILK */
+ int qlm;
+
+ for (qlm = 4; qlm < 8; qlm++) {
+ /* Make sure the QLM is powered and out of reset */
+ phy_ctl.u64 = csr_rd_node(xi.node, CVMX_GSERX_PHY_CTL(qlm));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ continue;
+ /* Make sure the QLM is in ILK mode */
+ gserx_cfg.u64 = csr_rd_node(xi.node, CVMX_GSERX_CFG(qlm));
+ if (gserx_cfg.s.ila)
+ return qlm;
+ }
+ }
+ return -1;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
+ cvmx_gserx_phy_ctl_t phy_ctl;
+ cvmx_gserx_cfg_t gserx_cfg;
+ int qlm;
+
+ /* (interface)0->QLM2, 1->QLM3, 2->DLM5/3->DLM6 */
+ if (xi.interface < 2) {
+ qlm = xi.interface + 2; /* (0,1)->ret(2,3) */
+
+ phy_ctl.u64 = csr_rd(CVMX_GSERX_PHY_CTL(qlm));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ return -1;
+
+ gserx_cfg.u64 = csr_rd(CVMX_GSERX_CFG(qlm));
+ if (gserx_cfg.s.bgx)
+ return qlm;
+ else
+ return -1;
+ } else if (xi.interface == 2) {
+ cvmx_gserx_cfg_t g1, g2;
+
+ g1.u64 = csr_rd(CVMX_GSERX_CFG(5));
+ g2.u64 = csr_rd(CVMX_GSERX_CFG(6));
+ /* Check if both QLM5 & QLM6 are BGX2 */
+ if (g2.s.bgx) {
+ if (g1.s.bgx) {
+ cvmx_gserx_phy_ctl_t phy_ctl1;
+
+ phy_ctl.u64 = csr_rd(CVMX_GSERX_PHY_CTL(5));
+ phy_ctl1.u64 = csr_rd(CVMX_GSERX_PHY_CTL(6));
+ if ((phy_ctl.s.phy_pd || phy_ctl.s.phy_reset) &&
+ (phy_ctl1.s.phy_pd || phy_ctl1.s.phy_reset))
+ return -1;
+ if (index >= 2)
+ return 6;
+ return 5;
+ } else { /* QLM6 is BGX2 */
+ phy_ctl.u64 = csr_rd(CVMX_GSERX_PHY_CTL(6));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ return -1;
+ return 6;
+ }
+ } else if (g1.s.bgx) {
+ phy_ctl.u64 = csr_rd(CVMX_GSERX_PHY_CTL(5));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ return -1;
+ return 5;
+ }
+ }
+ return -1;
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
+ cvmx_gserx_phy_ctl_t phy_ctl;
+ cvmx_gserx_cfg_t gserx_cfg;
+ int qlm;
+
+ if (xi.interface == 0) {
+ cvmx_gserx_cfg_t g1, g2;
+
+ g1.u64 = csr_rd(CVMX_GSERX_CFG(4));
+ g2.u64 = csr_rd(CVMX_GSERX_CFG(5));
+ /* Check if both QLM4 & QLM5 are BGX0 */
+ if (g2.s.bgx) {
+ if (g1.s.bgx) {
+ cvmx_gserx_phy_ctl_t phy_ctl1;
+
+ phy_ctl.u64 = csr_rd(CVMX_GSERX_PHY_CTL(4));
+ phy_ctl1.u64 = csr_rd(CVMX_GSERX_PHY_CTL(5));
+ if ((phy_ctl.s.phy_pd || phy_ctl.s.phy_reset) &&
+ (phy_ctl1.s.phy_pd || phy_ctl1.s.phy_reset))
+ return -1;
+ if (index >= 2)
+ return 5;
+ return 4;
+ }
+
+ /* QLM5 is BGX0 */
+ phy_ctl.u64 = csr_rd(CVMX_GSERX_PHY_CTL(5));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ return -1;
+ return 5;
+ } else if (g1.s.bgx) {
+ phy_ctl.u64 = csr_rd(CVMX_GSERX_PHY_CTL(4));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ return -1;
+ return 4;
+ }
+ } else if (xi.interface < 2) {
+ qlm = (xi.interface == 1) ? 2 : 3;
+ gserx_cfg.u64 = csr_rd(CVMX_GSERX_CFG(qlm));
+ if (gserx_cfg.s.srio)
+ return qlm;
+ }
+ return -1;
+ }
+ return -1;
+}
+
+/**
+ * Return if only DLM5/DLM6/DLM5+DLM6 is used by BGX
+ *
+ * @param BGX BGX to search for.
+ *
+ * @return muxes used 0 = DLM5+DLM6, 1 = DLM5, 2 = DLM6.
+ */
+int cvmx_qlm_mux_interface(int bgx)
+{
+ int mux = 0;
+ cvmx_gserx_cfg_t gser1, gser2;
+ int qlm1, qlm2;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) && bgx != 2)
+ return -1;
+ else if (OCTEON_IS_MODEL(OCTEON_CNF75XX) && bgx != 0)
+ return -1;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
+ qlm1 = 5;
+ qlm2 = 6;
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
+ qlm1 = 4;
+ qlm2 = 5;
+ } else {
+ return -1;
+ }
+
+ gser1.u64 = csr_rd(CVMX_GSERX_CFG(qlm1));
+ gser2.u64 = csr_rd(CVMX_GSERX_CFG(qlm2));
+
+ if (gser1.s.bgx && gser2.s.bgx)
+ mux = 0;
+ else if (gser1.s.bgx)
+ mux = 1; // BGX2 is using DLM5 only
+ else if (gser2.s.bgx)
+ mux = 2; // BGX2 is using DLM6 only
+
+ return mux;
+}
+
+/**
+ * Return number of lanes for a given qlm
+ *
+ * @param qlm QLM to examine
+ *
+ * @return Number of lanes
+ */
+int cvmx_qlm_get_lanes(int qlm)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN61XX) && qlm == 1)
+ return 2;
+ else if (OCTEON_IS_MODEL(OCTEON_CNF71XX))
+ return 2;
+ else if (OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return (qlm < 4) ? 4 /*QLM0,1,2,3*/ : 2 /*DLM4,5,6*/;
+ else if (OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return (qlm == 2 || qlm == 3) ? 4 /*QLM2,3*/ : 2 /*DLM0,1,4,5*/;
+ return 4;
+}
+
+/**
+ * Get the QLM JTAG fields based on Octeon model on the supported chips.
+ *
+ * @return qlm_jtag_field_t structure
+ */
+const __cvmx_qlm_jtag_field_t *cvmx_qlm_jtag_get_field(void)
+{
+ /* Figure out which JTAG chain description we're using */
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
+ return __cvmx_qlm_jtag_field_cn68xx;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN66XX) || OCTEON_IS_MODEL(OCTEON_CN61XX) ||
+ OCTEON_IS_MODEL(OCTEON_CNF71XX)) {
+ return __cvmx_qlm_jtag_field_cn66xx;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ return __cvmx_qlm_jtag_field_cn63xx;
+ }
+
+ return NULL;
+}
+
+/**
+ * Get the QLM JTAG length by going through qlm_jtag_field for each
+ * Octeon model that is supported
+ *
+ * @return return the length.
+ */
+int cvmx_qlm_jtag_get_length(void)
+{
+ const __cvmx_qlm_jtag_field_t *qlm_ptr = cvmx_qlm_jtag_get_field();
+ int length = 0;
+
+ /* Figure out how many bits are in the JTAG chain */
+ while (qlm_ptr && qlm_ptr->name) {
+ if (qlm_ptr->stop_bit > length)
+ length = qlm_ptr->stop_bit + 1;
+ qlm_ptr++;
+ }
+ return length;
+}
+
+/**
+ * Initialize the QLM layer
+ */
+void cvmx_qlm_init(void)
+{
+ if (OCTEON_IS_OCTEON3())
+ return;
+
+ /* ToDo: No support for non-Octeon 3 yet */
+ printf("Please add support for unsupported Octeon SoC\n");
+}
+
+/**
+ * Lookup the bit information for a JTAG field name
+ *
+ * @param name Name to lookup
+ *
+ * @return Field info, or NULL on failure
+ */
+static const __cvmx_qlm_jtag_field_t *__cvmx_qlm_lookup_field(const char *name)
+{
+ const __cvmx_qlm_jtag_field_t *ptr = cvmx_qlm_jtag_get_field();
+
+ while (ptr->name) {
+ if (strcmp(name, ptr->name) == 0)
+ return ptr;
+ ptr++;
+ }
+
+ debug("%s: Illegal field name %s\n", __func__, name);
+ return NULL;
+}
+
+/**
+ * Get a field in a QLM JTAG chain
+ *
+ * @param qlm QLM to get
+ * @param lane Lane in QLM to get
+ * @param name String name of field
+ *
+ * @return JTAG field value
+ */
+uint64_t cvmx_qlm_jtag_get(int qlm, int lane, const char *name)
+{
+ const __cvmx_qlm_jtag_field_t *field = __cvmx_qlm_lookup_field(name);
+ int qlm_jtag_length = cvmx_qlm_jtag_get_length();
+ int num_lanes = cvmx_qlm_get_lanes(qlm);
+
+ if (!field)
+ return 0;
+
+ /* Capture the current settings */
+ cvmx_helper_qlm_jtag_capture(qlm);
+ /*
+ * Shift past lanes we don't care about. CN6XXX/7XXX shifts lane 0 first,
+ * CN3XXX/5XXX shifts lane 3 first
+ */
+ /* Shift to the start of the field */
+ cvmx_helper_qlm_jtag_shift_zeros(qlm,
+ qlm_jtag_length * (num_lanes - 1 - lane));
+ cvmx_helper_qlm_jtag_shift_zeros(qlm, field->start_bit);
+ /* Shift out the value and return it */
+ return cvmx_helper_qlm_jtag_shift(qlm, field->stop_bit - field->start_bit + 1, 0);
+}
+
+/**
+ * Set a field in a QLM JTAG chain
+ *
+ * @param qlm QLM to set
+ * @param lane Lane in QLM to set, or -1 for all lanes
+ * @param name String name of field
+ * @param value Value of the field
+ */
+void cvmx_qlm_jtag_set(int qlm, int lane, const char *name, uint64_t value)
+{
+ int i, l;
+ u32 shift_values[CVMX_QLM_JTAG_UINT32];
+ int num_lanes = cvmx_qlm_get_lanes(qlm);
+ const __cvmx_qlm_jtag_field_t *field = __cvmx_qlm_lookup_field(name);
+ int qlm_jtag_length = cvmx_qlm_jtag_get_length();
+ int total_length = qlm_jtag_length * num_lanes;
+ int bits = 0;
+
+ if (!field)
+ return;
+
+ /* Get the current state */
+ cvmx_helper_qlm_jtag_capture(qlm);
+ for (i = 0; i < CVMX_QLM_JTAG_UINT32; i++)
+ shift_values[i] = cvmx_helper_qlm_jtag_shift(qlm, 32, 0);
+
+ /* Put new data in our local array */
+ for (l = 0; l < num_lanes; l++) {
+ u64 new_value = value;
+ int bits;
+ int adj_lanes;
+
+ if (l != lane && lane != -1)
+ continue;
+
+ adj_lanes = (num_lanes - 1 - l) * qlm_jtag_length;
+
+ for (bits = field->start_bit + adj_lanes; bits <= field->stop_bit + adj_lanes;
+ bits++) {
+ if (new_value & 1)
+ shift_values[bits / 32] |= 1 << (bits & 31);
+ else
+ shift_values[bits / 32] &= ~(1 << (bits & 31));
+ new_value >>= 1;
+ }
+ }
+
+ /* Shift out data and xor with reference */
+ while (bits < total_length) {
+ u32 shift = shift_values[bits / 32] ^ __cvmx_qlm_jtag_xor_ref[qlm][bits / 32];
+ int width = total_length - bits;
+
+ if (width > 32)
+ width = 32;
+ cvmx_helper_qlm_jtag_shift(qlm, width, shift);
+ bits += 32;
+ }
+
+ /* Update the new data */
+ cvmx_helper_qlm_jtag_update(qlm);
+
+ /*
+ * Always give the QLM 1ms to settle after every update. This may not
+ * always be needed, but some of the options make significant
+ * electrical changes
+ */
+ udelay(1000);
+}
+
+/**
+ * Errata G-16094: QLM Gen2 Equalizer Default Setting Change.
+ * CN68XX pass 1.x and CN66XX pass 1.x QLM tweak. This function tweaks the
+ * JTAG setting for a QLMs to run better at 5 and 6.25Ghz.
+ */
+void __cvmx_qlm_speed_tweak(void)
+{
+ cvmx_mio_qlmx_cfg_t qlm_cfg;
+ int num_qlms = cvmx_qlm_get_num();
+ int qlm;
+
+ /* Workaround for Errata (G-16467) */
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX_PASS2_X)) {
+ for (qlm = 0; qlm < num_qlms; qlm++) {
+ int ir50dac;
+
+ /*
+ * This workaround only applies to QLMs running at
+ * 6.25Ghz
+ */
+ if (cvmx_qlm_get_gbaud_mhz(qlm) == 6250) {
+#ifdef CVMX_QLM_DUMP_STATE
+ debug("%s:%d: QLM%d: Applying workaround for Errata G-16467\n",
+ __func__, __LINE__, qlm);
+ cvmx_qlm_display_registers(qlm);
+ debug("\n");
+#endif
+ cvmx_qlm_jtag_set(qlm, -1, "cfg_cdr_trunc", 0);
+ /* Hold the QLM in reset */
+ cvmx_qlm_jtag_set(qlm, -1, "cfg_rst_n_set", 0);
+ cvmx_qlm_jtag_set(qlm, -1, "cfg_rst_n_clr", 1);
+ /* Forcfe TX to be idle */
+ cvmx_qlm_jtag_set(qlm, -1, "cfg_tx_idle_clr", 0);
+ cvmx_qlm_jtag_set(qlm, -1, "cfg_tx_idle_set", 1);
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX_PASS2_0)) {
+ ir50dac = cvmx_qlm_jtag_get(qlm, 0, "ir50dac");
+ while (++ir50dac <= 31)
+ cvmx_qlm_jtag_set(qlm, -1, "ir50dac", ir50dac);
+ }
+ cvmx_qlm_jtag_set(qlm, -1, "div4_byp", 0);
+ cvmx_qlm_jtag_set(qlm, -1, "clkf_byp", 16);
+ cvmx_qlm_jtag_set(qlm, -1, "serdes_pll_byp", 1);
+ cvmx_qlm_jtag_set(qlm, -1, "spdsel_byp", 1);
+#ifdef CVMX_QLM_DUMP_STATE
+ debug("%s:%d: QLM%d: Done applying workaround for Errata G-16467\n",
+ __func__, __LINE__, qlm);
+ cvmx_qlm_display_registers(qlm);
+ debug("\n\n");
+#endif
+ /*
+ * The QLM will be taken out of reset later
+ * when ILK/XAUI are initialized.
+ */
+ }
+ }
+ } else if (OCTEON_IS_MODEL(OCTEON_CN68XX_PASS1_X) ||
+ OCTEON_IS_MODEL(OCTEON_CN66XX_PASS1_X)) {
+ /* Loop through the QLMs */
+ for (qlm = 0; qlm < num_qlms; qlm++) {
+ /* Read the QLM speed */
+ qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(qlm));
+
+ /* If the QLM is@6.25Ghz or 5Ghz then program JTAG */
+ if (qlm_cfg.s.qlm_spd == 5 || qlm_cfg.s.qlm_spd == 12 ||
+ qlm_cfg.s.qlm_spd == 0 || qlm_cfg.s.qlm_spd == 6 ||
+ qlm_cfg.s.qlm_spd == 11) {
+ cvmx_qlm_jtag_set(qlm, -1, "rx_cap_gen2", 0x1);
+ cvmx_qlm_jtag_set(qlm, -1, "rx_eq_gen2", 0x8);
+ }
+ }
+ }
+}
+
+/**
+ * Errata G-16174: QLM Gen2 PCIe IDLE DAC change.
+ * CN68XX pass 1.x, CN66XX pass 1.x and CN63XX pass 1.0-2.2 QLM tweak.
+ * This function tweaks the JTAG setting for a QLMs for PCIe to run better.
+ */
+void __cvmx_qlm_pcie_idle_dac_tweak(void)
+{
+ int num_qlms = 0;
+ int qlm;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX_PASS1_X))
+ num_qlms = 5;
+ else if (OCTEON_IS_MODEL(OCTEON_CN66XX_PASS1_X))
+ num_qlms = 3;
+ else if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+ num_qlms = 3;
+ else
+ return;
+
+ /* Loop through the QLMs */
+ for (qlm = 0; qlm < num_qlms; qlm++)
+ cvmx_qlm_jtag_set(qlm, -1, "idle_dac", 0x2);
+}
+
+void __cvmx_qlm_pcie_cfg_rxd_set_tweak(int qlm, int lane)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN6XXX) || OCTEON_IS_MODEL(OCTEON_CNF71XX))
+ cvmx_qlm_jtag_set(qlm, lane, "cfg_rxd_set", 0x1);
+}
+
+/**
+ * Get the speed (Gbaud) of the QLM in Mhz for a given node.
+ *
+ * @param node node of the QLM
+ * @param qlm QLM to examine
+ *
+ * @return Speed in Mhz
+ */
+int cvmx_qlm_get_gbaud_mhz_node(int node, int qlm)
+{
+ cvmx_gserx_lane_mode_t lane_mode;
+ cvmx_gserx_cfg_t cfg;
+
+ if (!octeon_has_feature(OCTEON_FEATURE_MULTINODE))
+ return 0;
+
+ if (qlm >= 8)
+ return -1; /* FIXME for OCI */
+ /* Check if QLM is configured */
+ cfg.u64 = csr_rd_node(node, CVMX_GSERX_CFG(qlm));
+ if (cfg.u64 == 0)
+ return -1;
+ if (cfg.s.pcie) {
+ int pem = 0;
+ cvmx_pemx_cfg_t pemx_cfg;
+
+ switch (qlm) {
+ case 0: /* Either PEM0 x4 of PEM0 x8 */
+ pem = 0;
+ break;
+ case 1: /* Either PEM0 x4 of PEM1 x4 */
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(0));
+ if (pemx_cfg.cn78xx.lanes8)
+ pem = 0;
+ else
+ pem = 1;
+ break;
+ case 2: /* Either PEM2 x4 of PEM2 x8 */
+ pem = 2;
+ break;
+ case 3: /* Either PEM2 x8 of PEM3 x4 or x8 */
+ /* Can be last 4 lanes of PEM2 */
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(2));
+ if (pemx_cfg.cn78xx.lanes8) {
+ pem = 2;
+ } else {
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(3));
+ if (pemx_cfg.cn78xx.lanes8)
+ pem = 3;
+ else
+ pem = 2;
+ }
+ break;
+ case 4: /* Either PEM3 x8 of PEM3 x4 */
+ pem = 3;
+ break;
+ default:
+ debug("QLM%d: Should be in PCIe mode\n", qlm);
+ break;
+ }
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(pem));
+ switch (pemx_cfg.s.md) {
+ case 0: /* Gen1 */
+ return 2500;
+ case 1: /* Gen2 */
+ return 5000;
+ case 2: /* Gen3 */
+ return 8000;
+ default:
+ return 0;
+ }
+ } else {
+ lane_mode.u64 = csr_rd_node(node, CVMX_GSERX_LANE_MODE(qlm));
+ switch (lane_mode.s.lmode) {
+ case R_25G_REFCLK100:
+ return 2500;
+ case R_5G_REFCLK100:
+ return 5000;
+ case R_8G_REFCLK100:
+ return 8000;
+ case R_125G_REFCLK15625_KX:
+ return 1250;
+ case R_3125G_REFCLK15625_XAUI:
+ return 3125;
+ case R_103125G_REFCLK15625_KR:
+ return 10312;
+ case R_125G_REFCLK15625_SGMII:
+ return 1250;
+ case R_5G_REFCLK15625_QSGMII:
+ return 5000;
+ case R_625G_REFCLK15625_RXAUI:
+ return 6250;
+ case R_25G_REFCLK125:
+ return 2500;
+ case R_5G_REFCLK125:
+ return 5000;
+ case R_8G_REFCLK125:
+ return 8000;
+ default:
+ return 0;
+ }
+ }
+}
+
+/**
+ * Get the speed (Gbaud) of the QLM in Mhz.
+ *
+ * @param qlm QLM to examine
+ *
+ * @return Speed in Mhz
+ */
+int cvmx_qlm_get_gbaud_mhz(int qlm)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ if (qlm == 2) {
+ cvmx_gmxx_inf_mode_t inf_mode;
+
+ inf_mode.u64 = csr_rd(CVMX_GMXX_INF_MODE(0));
+ switch (inf_mode.s.speed) {
+ case 0:
+ return 5000; /* 5 Gbaud */
+ case 1:
+ return 2500; /* 2.5 Gbaud */
+ case 2:
+ return 2500; /* 2.5 Gbaud */
+ case 3:
+ return 1250; /* 1.25 Gbaud */
+ case 4:
+ return 1250; /* 1.25 Gbaud */
+ case 5:
+ return 6250; /* 6.25 Gbaud */
+ case 6:
+ return 5000; /* 5 Gbaud */
+ case 7:
+ return 2500; /* 2.5 Gbaud */
+ case 8:
+ return 3125; /* 3.125 Gbaud */
+ case 9:
+ return 2500; /* 2.5 Gbaud */
+ case 10:
+ return 1250; /* 1.25 Gbaud */
+ case 11:
+ return 5000; /* 5 Gbaud */
+ case 12:
+ return 6250; /* 6.25 Gbaud */
+ case 13:
+ return 3750; /* 3.75 Gbaud */
+ case 14:
+ return 3125; /* 3.125 Gbaud */
+ default:
+ return 0; /* Disabled */
+ }
+ } else {
+ cvmx_sriox_status_reg_t status_reg;
+
+ status_reg.u64 = csr_rd(CVMX_SRIOX_STATUS_REG(qlm));
+ if (status_reg.s.srio) {
+ cvmx_sriomaintx_port_0_ctl2_t sriomaintx_port_0_ctl2;
+
+ sriomaintx_port_0_ctl2.u32 =
+ csr_rd(CVMX_SRIOMAINTX_PORT_0_CTL2(qlm));
+ switch (sriomaintx_port_0_ctl2.s.sel_baud) {
+ case 1:
+ return 1250; /* 1.25 Gbaud */
+ case 2:
+ return 2500; /* 2.5 Gbaud */
+ case 3:
+ return 3125; /* 3.125 Gbaud */
+ case 4:
+ return 5000; /* 5 Gbaud */
+ case 5:
+ return 6250; /* 6.250 Gbaud */
+ default:
+ return 0; /* Disabled */
+ }
+ } else {
+ cvmx_pciercx_cfg032_t pciercx_cfg032;
+
+ pciercx_cfg032.u32 = csr_rd(CVMX_PCIERCX_CFG032(qlm));
+ switch (pciercx_cfg032.s.ls) {
+ case 1:
+ return 2500;
+ case 2:
+ return 5000;
+ case 4:
+ return 8000;
+ default: {
+ cvmx_mio_rst_boot_t mio_rst_boot;
+
+ mio_rst_boot.u64 = csr_rd(CVMX_MIO_RST_BOOT);
+ if (qlm == 0 && mio_rst_boot.s.qlm0_spd == 0xf)
+ return 0;
+
+ if (qlm == 1 && mio_rst_boot.s.qlm1_spd == 0xf)
+ return 0;
+
+ /* Best guess I can make */
+ return 5000;
+ }
+ }
+ }
+ }
+ } else if (OCTEON_IS_OCTEON2()) {
+ cvmx_mio_qlmx_cfg_t qlm_cfg;
+
+ qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(qlm));
+ switch (qlm_cfg.s.qlm_spd) {
+ case 0:
+ return 5000; /* 5 Gbaud */
+ case 1:
+ return 2500; /* 2.5 Gbaud */
+ case 2:
+ return 2500; /* 2.5 Gbaud */
+ case 3:
+ return 1250; /* 1.25 Gbaud */
+ case 4:
+ return 1250; /* 1.25 Gbaud */
+ case 5:
+ return 6250; /* 6.25 Gbaud */
+ case 6:
+ return 5000; /* 5 Gbaud */
+ case 7:
+ return 2500; /* 2.5 Gbaud */
+ case 8:
+ return 3125; /* 3.125 Gbaud */
+ case 9:
+ return 2500; /* 2.5 Gbaud */
+ case 10:
+ return 1250; /* 1.25 Gbaud */
+ case 11:
+ return 5000; /* 5 Gbaud */
+ case 12:
+ return 6250; /* 6.25 Gbaud */
+ case 13:
+ return 3750; /* 3.75 Gbaud */
+ case 14:
+ return 3125; /* 3.125 Gbaud */
+ default:
+ return 0; /* Disabled */
+ }
+ } else if (OCTEON_IS_MODEL(OCTEON_CN70XX)) {
+ cvmx_gserx_dlmx_mpll_multiplier_t mpll_multiplier;
+ u64 meas_refclock;
+ u64 freq;
+
+ /* Measure the reference clock */
+ meas_refclock = cvmx_qlm_measure_clock(qlm);
+ /* Multiply to get the final frequency */
+ mpll_multiplier.u64 = csr_rd(CVMX_GSERX_DLMX_MPLL_MULTIPLIER(qlm, 0));
+ freq = meas_refclock * mpll_multiplier.s.mpll_multiplier;
+ freq = (freq + 500000) / 1000000;
+
+ return freq;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
+ return cvmx_qlm_get_gbaud_mhz_node(cvmx_get_node_num(), qlm);
+ } else if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
+ cvmx_gserx_lane_mode_t lane_mode;
+
+ lane_mode.u64 = csr_rd(CVMX_GSERX_LANE_MODE(qlm));
+ switch (lane_mode.s.lmode) {
+ case R_25G_REFCLK100:
+ return 2500;
+ case R_5G_REFCLK100:
+ return 5000;
+ case R_8G_REFCLK100:
+ return 8000;
+ case R_125G_REFCLK15625_KX:
+ return 1250;
+ case R_3125G_REFCLK15625_XAUI:
+ return 3125;
+ case R_103125G_REFCLK15625_KR:
+ return 10312;
+ case R_125G_REFCLK15625_SGMII:
+ return 1250;
+ case R_5G_REFCLK15625_QSGMII:
+ return 5000;
+ case R_625G_REFCLK15625_RXAUI:
+ return 6250;
+ case R_25G_REFCLK125:
+ return 2500;
+ case R_5G_REFCLK125:
+ return 5000;
+ case R_8G_REFCLK125:
+ return 8000;
+ default:
+ return 0;
+ }
+ }
+ return 0;
+}
+
+static enum cvmx_qlm_mode __cvmx_qlm_get_mode_cn70xx(int qlm)
+{
+ switch (qlm) {
+ case 0: /* DLM0/DLM1 - SGMII/QSGMII/RXAUI */
+ {
+ union cvmx_gmxx_inf_mode inf_mode0, inf_mode1;
+
+ inf_mode0.u64 = csr_rd(CVMX_GMXX_INF_MODE(0));
+ inf_mode1.u64 = csr_rd(CVMX_GMXX_INF_MODE(1));
+
+ /* SGMII0 SGMII1 */
+ switch (inf_mode0.s.mode) {
+ case CVMX_GMX_INF_MODE_SGMII:
+ switch (inf_mode1.s.mode) {
+ case CVMX_GMX_INF_MODE_SGMII:
+ return CVMX_QLM_MODE_SGMII_SGMII;
+ case CVMX_GMX_INF_MODE_QSGMII:
+ return CVMX_QLM_MODE_SGMII_QSGMII;
+ default:
+ return CVMX_QLM_MODE_SGMII_DISABLED;
+ }
+ case CVMX_GMX_INF_MODE_QSGMII:
+ switch (inf_mode1.s.mode) {
+ case CVMX_GMX_INF_MODE_SGMII:
+ return CVMX_QLM_MODE_QSGMII_SGMII;
+ case CVMX_GMX_INF_MODE_QSGMII:
+ return CVMX_QLM_MODE_QSGMII_QSGMII;
+ default:
+ return CVMX_QLM_MODE_QSGMII_DISABLED;
+ }
+ case CVMX_GMX_INF_MODE_RXAUI:
+ return CVMX_QLM_MODE_RXAUI_1X2;
+ default:
+ switch (inf_mode1.s.mode) {
+ case CVMX_GMX_INF_MODE_SGMII:
+ return CVMX_QLM_MODE_DISABLED_SGMII;
+ case CVMX_GMX_INF_MODE_QSGMII:
+ return CVMX_QLM_MODE_DISABLED_QSGMII;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ }
+ }
+ case 1: /* Sata / pem0 */
+ {
+ union cvmx_gserx_sata_cfg sata_cfg;
+ union cvmx_pemx_cfg pem0_cfg;
+
+ sata_cfg.u64 = csr_rd(CVMX_GSERX_SATA_CFG(0));
+ pem0_cfg.u64 = csr_rd(CVMX_PEMX_CFG(0));
+
+ switch (pem0_cfg.cn70xx.md) {
+ case CVMX_PEM_MD_GEN2_2LANE:
+ case CVMX_PEM_MD_GEN1_2LANE:
+ return CVMX_QLM_MODE_PCIE_1X2;
+ case CVMX_PEM_MD_GEN2_1LANE:
+ case CVMX_PEM_MD_GEN1_1LANE:
+ if (sata_cfg.s.sata_en)
+ /* Both PEM0 and PEM1 */
+ return CVMX_QLM_MODE_PCIE_2X1;
+
+ /* Only PEM0 */
+ return CVMX_QLM_MODE_PCIE_1X1;
+ case CVMX_PEM_MD_GEN2_4LANE:
+ case CVMX_PEM_MD_GEN1_4LANE:
+ return CVMX_QLM_MODE_PCIE;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ }
+ case 2: {
+ union cvmx_gserx_sata_cfg sata_cfg;
+ union cvmx_pemx_cfg pem0_cfg, pem1_cfg, pem2_cfg;
+
+ sata_cfg.u64 = csr_rd(CVMX_GSERX_SATA_CFG(0));
+ pem0_cfg.u64 = csr_rd(CVMX_PEMX_CFG(0));
+ pem1_cfg.u64 = csr_rd(CVMX_PEMX_CFG(1));
+ pem2_cfg.u64 = csr_rd(CVMX_PEMX_CFG(2));
+
+ if (sata_cfg.s.sata_en)
+ return CVMX_QLM_MODE_SATA_2X1;
+ if (pem0_cfg.cn70xx.md == CVMX_PEM_MD_GEN2_4LANE ||
+ pem0_cfg.cn70xx.md == CVMX_PEM_MD_GEN1_4LANE)
+ return CVMX_QLM_MODE_PCIE;
+ if (pem1_cfg.cn70xx.md == CVMX_PEM_MD_GEN2_2LANE ||
+ pem1_cfg.cn70xx.md == CVMX_PEM_MD_GEN1_2LANE) {
+ return CVMX_QLM_MODE_PCIE_1X2;
+ }
+ if (pem1_cfg.cn70xx.md == CVMX_PEM_MD_GEN2_1LANE ||
+ pem1_cfg.cn70xx.md == CVMX_PEM_MD_GEN1_1LANE) {
+ if (pem2_cfg.cn70xx.md == CVMX_PEM_MD_GEN2_1LANE ||
+ pem2_cfg.cn70xx.md == CVMX_PEM_MD_GEN1_1LANE) {
+ return CVMX_QLM_MODE_PCIE_2X1;
+ } else {
+ return CVMX_QLM_MODE_PCIE_1X1;
+ }
+ }
+ if (pem2_cfg.cn70xx.md == CVMX_PEM_MD_GEN2_1LANE ||
+ pem2_cfg.cn70xx.md == CVMX_PEM_MD_GEN1_1LANE)
+ return CVMX_QLM_MODE_PCIE_2X1;
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+
+ return CVMX_QLM_MODE_DISABLED;
+}
+
+/*
+ * Get the DLM mode for the interface based on the interface type.
+ *
+ * @param interface_type 0 - SGMII/QSGMII/RXAUI interface
+ * 1 - PCIe
+ * 2 - SATA
+ * @param interface interface to use
+ * @return the qlm mode the interface is
+ */
+enum cvmx_qlm_mode cvmx_qlm_get_dlm_mode(int interface_type, int interface)
+{
+ switch (interface_type) {
+ case 0: /* SGMII/QSGMII/RXAUI */
+ {
+ enum cvmx_qlm_mode qlm_mode = __cvmx_qlm_get_mode_cn70xx(0);
+
+ switch (interface) {
+ case 0:
+ switch (qlm_mode) {
+ case CVMX_QLM_MODE_SGMII_SGMII:
+ case CVMX_QLM_MODE_SGMII_DISABLED:
+ case CVMX_QLM_MODE_SGMII_QSGMII:
+ return CVMX_QLM_MODE_SGMII;
+ case CVMX_QLM_MODE_QSGMII_QSGMII:
+ case CVMX_QLM_MODE_QSGMII_DISABLED:
+ case CVMX_QLM_MODE_QSGMII_SGMII:
+ return CVMX_QLM_MODE_QSGMII;
+ case CVMX_QLM_MODE_RXAUI_1X2:
+ return CVMX_QLM_MODE_RXAUI;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ case 1:
+ switch (qlm_mode) {
+ case CVMX_QLM_MODE_SGMII_SGMII:
+ case CVMX_QLM_MODE_DISABLED_SGMII:
+ case CVMX_QLM_MODE_QSGMII_SGMII:
+ return CVMX_QLM_MODE_SGMII;
+ case CVMX_QLM_MODE_QSGMII_QSGMII:
+ case CVMX_QLM_MODE_DISABLED_QSGMII:
+ case CVMX_QLM_MODE_SGMII_QSGMII:
+ return CVMX_QLM_MODE_QSGMII;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ default:
+ return qlm_mode;
+ }
+ }
+ case 1: /* PCIe */
+ {
+ enum cvmx_qlm_mode qlm_mode1 = __cvmx_qlm_get_mode_cn70xx(1);
+ enum cvmx_qlm_mode qlm_mode2 = __cvmx_qlm_get_mode_cn70xx(2);
+
+ switch (interface) {
+ case 0: /* PCIe0 can be DLM1 with 1, 2 or 4 lanes */
+ return qlm_mode1;
+ case 1:
+ /*
+ * PCIe1 can be in DLM1 1 lane(1), DLM2 1 lane(0)
+ * or 2 lanes(0-1)
+ */
+ if (qlm_mode1 == CVMX_QLM_MODE_PCIE_2X1)
+ return CVMX_QLM_MODE_PCIE_2X1;
+ else if (qlm_mode2 == CVMX_QLM_MODE_PCIE_1X2 ||
+ qlm_mode2 == CVMX_QLM_MODE_PCIE_2X1)
+ return qlm_mode2;
+ else
+ return CVMX_QLM_MODE_DISABLED;
+ case 2: /* PCIe2 can be DLM2 1 lanes(1) */
+ if (qlm_mode2 == CVMX_QLM_MODE_PCIE_2X1)
+ return qlm_mode2;
+ else
+ return CVMX_QLM_MODE_DISABLED;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ }
+ case 2: /* SATA */
+ {
+ enum cvmx_qlm_mode qlm_mode = __cvmx_qlm_get_mode_cn70xx(2);
+
+ if (qlm_mode == CVMX_QLM_MODE_SATA_2X1)
+ return CVMX_QLM_MODE_SATA_2X1;
+ else
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+}
+
+static enum cvmx_qlm_mode __cvmx_qlm_get_mode_cn6xxx(int qlm)
+{
+ cvmx_mio_qlmx_cfg_t qlmx_cfg;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
+ qlmx_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(qlm));
+ /* QLM is disabled when QLM SPD is 15. */
+ if (qlmx_cfg.s.qlm_spd == 15)
+ return CVMX_QLM_MODE_DISABLED;
+
+ switch (qlmx_cfg.s.qlm_cfg) {
+ case 0: /* PCIE */
+ return CVMX_QLM_MODE_PCIE;
+ case 1: /* ILK */
+ return CVMX_QLM_MODE_ILK;
+ case 2: /* SGMII */
+ return CVMX_QLM_MODE_SGMII;
+ case 3: /* XAUI */
+ return CVMX_QLM_MODE_XAUI;
+ case 7: /* RXAUI */
+ return CVMX_QLM_MODE_RXAUI;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ } else if (OCTEON_IS_MODEL(OCTEON_CN66XX)) {
+ qlmx_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(qlm));
+ /* QLM is disabled when QLM SPD is 15. */
+ if (qlmx_cfg.s.qlm_spd == 15)
+ return CVMX_QLM_MODE_DISABLED;
+
+ switch (qlmx_cfg.s.qlm_cfg) {
+ case 0x9: /* SGMII */
+ return CVMX_QLM_MODE_SGMII;
+ case 0xb: /* XAUI */
+ return CVMX_QLM_MODE_XAUI;
+ case 0x0: /* PCIE gen2 */
+ case 0x8: /* PCIE gen2 (alias) */
+ case 0x2: /* PCIE gen1 */
+ case 0xa: /* PCIE gen1 (alias) */
+ return CVMX_QLM_MODE_PCIE;
+ case 0x1: /* SRIO 1x4 short */
+ case 0x3: /* SRIO 1x4 long */
+ return CVMX_QLM_MODE_SRIO_1X4;
+ case 0x4: /* SRIO 2x2 short */
+ case 0x6: /* SRIO 2x2 long */
+ return CVMX_QLM_MODE_SRIO_2X2;
+ case 0x5: /* SRIO 4x1 short */
+ case 0x7: /* SRIO 4x1 long */
+ if (!OCTEON_IS_MODEL(OCTEON_CN66XX_PASS1_0))
+ return CVMX_QLM_MODE_SRIO_4X1;
+ fallthrough;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ } else if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ cvmx_sriox_status_reg_t status_reg;
+ /* For now skip qlm2 */
+ if (qlm == 2) {
+ cvmx_gmxx_inf_mode_t inf_mode;
+
+ inf_mode.u64 = csr_rd(CVMX_GMXX_INF_MODE(0));
+ if (inf_mode.s.speed == 15)
+ return CVMX_QLM_MODE_DISABLED;
+ else if (inf_mode.s.mode == 0)
+ return CVMX_QLM_MODE_SGMII;
+ else
+ return CVMX_QLM_MODE_XAUI;
+ }
+ status_reg.u64 = csr_rd(CVMX_SRIOX_STATUS_REG(qlm));
+ if (status_reg.s.srio)
+ return CVMX_QLM_MODE_SRIO_1X4;
+ else
+ return CVMX_QLM_MODE_PCIE;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN61XX)) {
+ qlmx_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(qlm));
+ /* QLM is disabled when QLM SPD is 15. */
+ if (qlmx_cfg.s.qlm_spd == 15)
+ return CVMX_QLM_MODE_DISABLED;
+
+ switch (qlm) {
+ case 0:
+ switch (qlmx_cfg.s.qlm_cfg) {
+ case 0: /* PCIe 1x4 gen2 / gen1 */
+ return CVMX_QLM_MODE_PCIE;
+ case 2: /* SGMII */
+ return CVMX_QLM_MODE_SGMII;
+ case 3: /* XAUI */
+ return CVMX_QLM_MODE_XAUI;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ case 1:
+ switch (qlmx_cfg.s.qlm_cfg) {
+ case 0: /* PCIe 1x2 gen2 / gen1 */
+ return CVMX_QLM_MODE_PCIE_1X2;
+ case 1: /* PCIe 2x1 gen2 / gen1 */
+ return CVMX_QLM_MODE_PCIE_2X1;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ case 2:
+ switch (qlmx_cfg.s.qlm_cfg) {
+ case 2: /* SGMII */
+ return CVMX_QLM_MODE_SGMII;
+ case 3: /* XAUI */
+ return CVMX_QLM_MODE_XAUI;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ }
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF71XX)) {
+ qlmx_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(qlm));
+ /* QLM is disabled when QLM SPD is 15. */
+ if (qlmx_cfg.s.qlm_spd == 15)
+ return CVMX_QLM_MODE_DISABLED;
+
+ switch (qlm) {
+ case 0:
+ if (qlmx_cfg.s.qlm_cfg == 2) /* SGMII */
+ return CVMX_QLM_MODE_SGMII;
+ break;
+ case 1:
+ switch (qlmx_cfg.s.qlm_cfg) {
+ case 0: /* PCIe 1x2 gen2 / gen1 */
+ return CVMX_QLM_MODE_PCIE_1X2;
+ case 1: /* PCIe 2x1 gen2 / gen1 */
+ return CVMX_QLM_MODE_PCIE_2X1;
+ default:
+ return CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ }
+ }
+ return CVMX_QLM_MODE_DISABLED;
+}
+
+/**
+ * @INTERNAL
+ * Decrement the MPLL Multiplier for the DLM as per Errata G-20669
+ *
+ * @param qlm DLM to configure
+ * @param baud_mhz Speed of the DLM configured at
+ * @param old_multiplier MPLL_MULTIPLIER value to decrement
+ */
+void __cvmx_qlm_set_mult(int qlm, int baud_mhz, int old_multiplier)
+{
+ cvmx_gserx_dlmx_mpll_multiplier_t mpll_multiplier;
+ cvmx_gserx_dlmx_ref_clkdiv2_t clkdiv;
+ u64 meas_refclock, mult;
+
+ if (!OCTEON_IS_MODEL(OCTEON_CN70XX))
+ return;
+
+ if (qlm == -1)
+ return;
+
+ meas_refclock = cvmx_qlm_measure_clock(qlm);
+ if (meas_refclock == 0) {
+ printf("DLM%d: Reference clock not running\n", qlm);
+ return;
+ }
+
+ /*
+ * The baud rate multiplier needs to be adjusted on the CN70XX if
+ * the reference clock is > 100MHz.
+ */
+ if (qlm == 0) {
+ clkdiv.u64 = csr_rd(CVMX_GSERX_DLMX_REF_CLKDIV2(qlm, 0));
+ if (clkdiv.s.ref_clkdiv2)
+ baud_mhz *= 2;
+ }
+ mult = (uint64_t)baud_mhz * 1000000 + (meas_refclock / 2);
+ mult /= meas_refclock;
+
+ /*
+ * 6. Decrease MPLL_MULTIPLIER by one continually until it reaches
+ * the desired long-term setting, ensuring that each MPLL_MULTIPLIER
+ * value is constant for at least 1 msec before changing to the next
+ * value. The desired long-term setting is as indicated in HRM tables
+ * 21-1, 21-2, and 21-3. This is not required with the HRM
+ * sequence.
+ */
+ do {
+ mpll_multiplier.u64 = csr_rd(CVMX_GSERX_DLMX_MPLL_MULTIPLIER(qlm, 0));
+ mpll_multiplier.s.mpll_multiplier = --old_multiplier;
+ csr_wr(CVMX_GSERX_DLMX_MPLL_MULTIPLIER(qlm, 0), mpll_multiplier.u64);
+ /* Wait for 1 ms */
+ udelay(1000);
+ } while (old_multiplier > (int)mult);
+}
+
+enum cvmx_qlm_mode cvmx_qlm_get_mode_cn78xx(int node, int qlm)
+{
+ cvmx_gserx_cfg_t gserx_cfg;
+ int qlm_mode[2][9] = { { -1, -1, -1, -1, -1, -1, -1, -1 },
+ { -1, -1, -1, -1, -1, -1, -1, -1 } };
+
+ if (qlm >= 8)
+ return CVMX_QLM_MODE_OCI;
+
+ if (qlm_mode[node][qlm] != -1)
+ return qlm_mode[node][qlm];
+
+ gserx_cfg.u64 = csr_rd_node(node, CVMX_GSERX_CFG(qlm));
+ if (gserx_cfg.s.pcie) {
+ switch (qlm) {
+ case 0: /* Either PEM0 x4 or PEM0 x8 */
+ case 1: /* Either PEM0 x8 or PEM1 x4 */
+ {
+ cvmx_pemx_cfg_t pemx_cfg;
+
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(0));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM0 x8 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ } else {
+ /* PEM0 x4 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE;
+ }
+ break;
+ }
+ case 2: /* Either PEM2 x4 or PEM2 x8 */
+ {
+ cvmx_pemx_cfg_t pemx_cfg;
+
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(2));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM2 x8 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ } else {
+ /* PEM2 x4 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE;
+ }
+ break;
+ }
+ case 3: /* Either PEM2 x8 or PEM3 x4 or PEM3 x8 */
+ {
+ cvmx_pemx_cfg_t pemx_cfg;
+
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(2));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM2 x8 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ }
+
+ /* Can be first 4 lanes of PEM3 */
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(3));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM3 x8 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ } else {
+ /* PEM2 x4 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE;
+ }
+ break;
+ }
+ case 4: /* Either PEM3 x8 or PEM3 x4 */
+ {
+ cvmx_pemx_cfg_t pemx_cfg;
+
+ pemx_cfg.u64 = csr_rd_node(node, CVMX_PEMX_CFG(3));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM3 x8 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ } else {
+ /* PEM3 x4 */
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_PCIE;
+ }
+ break;
+ }
+ default:
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ }
+ } else if (gserx_cfg.s.ila) {
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_ILK;
+ } else if (gserx_cfg.s.bgx) {
+ cvmx_bgxx_cmrx_config_t cmr_config;
+ cvmx_bgxx_spux_br_pmd_control_t pmd_control;
+ int bgx = (qlm < 2) ? qlm : qlm - 2;
+
+ cmr_config.u64 = csr_rd_node(node, CVMX_BGXX_CMRX_CONFIG(0, bgx));
+ pmd_control.u64 = csr_rd_node(node, CVMX_BGXX_SPUX_BR_PMD_CONTROL(0, bgx));
+
+ switch (cmr_config.s.lmac_type) {
+ case 0:
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_SGMII;
+ break;
+ case 1:
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_XAUI;
+ break;
+ case 2:
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_RXAUI;
+ break;
+ case 3:
+ /*
+ * Use training to determine if we're in 10GBASE-KR
+ * or XFI
+ */
+ if (pmd_control.s.train_en)
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_10G_KR;
+ else
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_XFI;
+ break;
+ case 4:
+ /*
+ * Use training to determine if we're in 40GBASE-KR
+ * or XLAUI
+ */
+ if (pmd_control.s.train_en)
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_40G_KR4;
+ else
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_XLAUI;
+ break;
+ default:
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ }
+ } else {
+ qlm_mode[node][qlm] = CVMX_QLM_MODE_DISABLED;
+ }
+
+ return qlm_mode[node][qlm];
+}
+
+enum cvmx_qlm_mode __cvmx_qlm_get_mode_cn73xx(int qlm)
+{
+ cvmx_gserx_cfg_t gserx_cfg;
+ int qlm_mode[7] = { -1, -1, -1, -1, -1, -1, -1 };
+
+ if (qlm_mode[qlm] != -1)
+ return qlm_mode[qlm];
+
+ if (qlm > 6) {
+ debug("Invalid QLM(%d) passed\n", qlm);
+ return -1;
+ }
+
+ gserx_cfg.u64 = csr_rd(CVMX_GSERX_CFG(qlm));
+ if (gserx_cfg.s.pcie) {
+ cvmx_pemx_cfg_t pemx_cfg;
+
+ switch (qlm) {
+ case 0: /* Either PEM0 x4 or PEM0 x8 */
+ case 1: /* Either PEM0 x8 or PEM1 x4 */
+ {
+ pemx_cfg.u64 = csr_rd(CVMX_PEMX_CFG(0));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM0 x8 */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ } else {
+ /* PEM0/PEM1 x4 */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE;
+ }
+ break;
+ }
+ case 2: /* Either PEM2 x4 or PEM2 x8 */
+ {
+ pemx_cfg.u64 = csr_rd(CVMX_PEMX_CFG(2));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM2 x8 */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ } else {
+ /* PEM2 x4 */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE;
+ }
+ break;
+ }
+ case 5:
+ case 6: /* PEM3 x2 */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE_1X2; /* PEM3 x2 */
+ break;
+ case 3: /* Either PEM2 x8 or PEM3 x4 */
+ {
+ pemx_cfg.u64 = csr_rd(CVMX_PEMX_CFG(2));
+ if (pemx_cfg.cn78xx.lanes8) {
+ /* PEM2 x8 */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE_1X8;
+ } else {
+ /* PEM3 x4 */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE;
+ }
+ break;
+ }
+ default:
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ }
+ } else if (gserx_cfg.s.bgx) {
+ cvmx_bgxx_cmrx_config_t cmr_config;
+ cvmx_bgxx_cmr_rx_lmacs_t bgx_cmr_rx_lmacs;
+ cvmx_bgxx_spux_br_pmd_control_t pmd_control;
+ int bgx = 0;
+ int start = 0, end = 4, index;
+ int lane_mask = 0, train_mask = 0;
+ int mux = 0; // 0:BGX2 (DLM5/DLM6), 1:BGX2(DLM5), 2:BGX2(DLM6)
+
+ if (qlm < 4) {
+ bgx = qlm - 2;
+ } else if (qlm == 5 || qlm == 6) {
+ bgx = 2;
+ mux = cvmx_qlm_mux_interface(bgx);
+ if (mux == 0) {
+ start = 0;
+ end = 4;
+ } else if (mux == 1) {
+ start = 0;
+ end = 2;
+ } else if (mux == 2) {
+ start = 2;
+ end = 4;
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ return qlm_mode[qlm];
+ }
+ }
+
+ for (index = start; index < end; index++) {
+ cmr_config.u64 = csr_rd(CVMX_BGXX_CMRX_CONFIG(index, bgx));
+ pmd_control.u64 = csr_rd(CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, bgx));
+ lane_mask |= (cmr_config.s.lmac_type << (index * 4));
+ train_mask |= (pmd_control.s.train_en << (index * 4));
+ }
+
+ /* Need to include DLM5 lmacs when only DLM6 DLM is used */
+ if (mux == 2)
+ bgx_cmr_rx_lmacs.u64 = csr_rd(CVMX_BGXX_CMR_RX_LMACS(2));
+ switch (lane_mask) {
+ case 0:
+ if (mux == 1) {
+ qlm_mode[qlm] = CVMX_QLM_MODE_SGMII_2X1;
+ } else if (mux == 2) {
+ qlm_mode[qlm] = CVMX_QLM_MODE_SGMII_2X1;
+ bgx_cmr_rx_lmacs.s.lmacs = 4;
+ }
+ qlm_mode[qlm] = CVMX_QLM_MODE_SGMII;
+ break;
+ case 0x1:
+ qlm_mode[qlm] = CVMX_QLM_MODE_XAUI;
+ break;
+ case 0x2:
+ if (mux == 1) {
+ // NONE+RXAUI
+ qlm_mode[qlm] = CVMX_QLM_MODE_RXAUI_1X2;
+ } else if (mux == 0) {
+ // RXAUI+SGMII
+ qlm_mode[qlm] = CVMX_QLM_MODE_MIXED;
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ case 0x202:
+ if (mux == 2) {
+ // RXAUI+RXAUI
+ qlm_mode[qlm] = CVMX_QLM_MODE_RXAUI_1X2;
+ bgx_cmr_rx_lmacs.s.lmacs = 4;
+ } else if (mux == 1) {
+ // RXAUI+RXAUI
+ qlm_mode[qlm] = CVMX_QLM_MODE_RXAUI_1X2;
+ } else if (mux == 0) {
+ qlm_mode[qlm] = CVMX_QLM_MODE_RXAUI;
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ case 0x22:
+ qlm_mode[qlm] = CVMX_QLM_MODE_RXAUI;
+ break;
+ case 0x3333:
+ /*
+ * Use training to determine if we're in 10GBASE-KR
+ * or XFI
+ */
+ if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_10G_KR;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_XFI;
+ break;
+ case 0x4:
+ /*
+ * Use training to determine if we're in 40GBASE-KR
+ * or XLAUI
+ */
+ if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_40G_KR4;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_XLAUI;
+ break;
+ case 0x0005:
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_SGMII;
+ break;
+ case 0x3335:
+ if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_10G_KR;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_XFI;
+ break;
+ case 0x45:
+ if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_40G_KR4;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_XLAUI;
+ break;
+ case 0x225:
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_RXAUI;
+ break;
+ case 0x15:
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_XAUI;
+ break;
+
+ case 0x200:
+ if (mux == 2) {
+ qlm_mode[qlm] = CVMX_QLM_MODE_RXAUI_1X2;
+ bgx_cmr_rx_lmacs.s.lmacs = 4;
+ } else
+ case 0x205:
+ case 0x233:
+ case 0x3302:
+ case 0x3305:
+ if (mux == 0)
+ qlm_mode[qlm] = CVMX_QLM_MODE_MIXED;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ case 0x3300:
+ if (mux == 0) {
+ qlm_mode[qlm] = CVMX_QLM_MODE_MIXED;
+ } else if (mux == 2) {
+ if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_10G_KR_1X2;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_XFI_1X2;
+ bgx_cmr_rx_lmacs.s.lmacs = 4;
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ case 0x33:
+ if (mux == 1 || mux == 2) {
+ if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_10G_KR_1X2;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_XFI_1X2;
+ if (mux == 2)
+ bgx_cmr_rx_lmacs.s.lmacs = 4;
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ }
+ break;
+ case 0x0035:
+ if (mux == 0)
+ qlm_mode[qlm] = CVMX_QLM_MODE_MIXED;
+ else if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_10G_KR_1X1;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_RGMII_XFI_1X1;
+ break;
+ case 0x235:
+ if (mux == 0)
+ qlm_mode[qlm] = CVMX_QLM_MODE_MIXED;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ default:
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ }
+ if (mux == 2) {
+ csr_wr(CVMX_BGXX_CMR_RX_LMACS(2), bgx_cmr_rx_lmacs.u64);
+ csr_wr(CVMX_BGXX_CMR_TX_LMACS(2), bgx_cmr_rx_lmacs.u64);
+ }
+ } else if (gserx_cfg.s.sata) {
+ qlm_mode[qlm] = CVMX_QLM_MODE_SATA_2X1;
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ }
+
+ return qlm_mode[qlm];
+}
+
+enum cvmx_qlm_mode __cvmx_qlm_get_mode_cnf75xx(int qlm)
+{
+ cvmx_gserx_cfg_t gserx_cfg;
+ int qlm_mode[9] = { -1, -1, -1, -1, -1, -1, -1 };
+
+ if (qlm_mode[qlm] != -1)
+ return qlm_mode[qlm];
+
+ if (qlm > 9) {
+ debug("Invalid QLM(%d) passed\n", qlm);
+ return -1;
+ }
+
+ if ((qlm == 2 || qlm == 3) && (OCTEON_IS_MODEL(OCTEON_CNF75XX))) {
+ cvmx_sriox_status_reg_t status_reg;
+ int port = (qlm == 2) ? 0 : 1;
+
+ status_reg.u64 = csr_rd(CVMX_SRIOX_STATUS_REG(port));
+ /* FIXME add different width */
+ if (status_reg.s.srio)
+ qlm_mode[qlm] = CVMX_QLM_MODE_SRIO_1X4;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ return qlm_mode[qlm];
+ }
+
+ gserx_cfg.u64 = csr_rd(CVMX_GSERX_CFG(qlm));
+ if (gserx_cfg.s.pcie) {
+ switch (qlm) {
+ case 0: /* Either PEM0 x2 or PEM0 x4 */
+ case 1: /* Either PEM1 x2 or PEM0 x4 */
+ {
+ /* FIXME later */
+ qlm_mode[qlm] = CVMX_QLM_MODE_PCIE;
+ break;
+ }
+ default:
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ }
+ } else if (gserx_cfg.s.bgx) {
+ cvmx_bgxx_cmrx_config_t cmr_config;
+ cvmx_bgxx_spux_br_pmd_control_t pmd_control;
+ int bgx = 0;
+ int start = 0, end = 4, index;
+ int lane_mask = 0, train_mask = 0;
+ int mux = 0; // 0:BGX0 (DLM4/DLM5), 1:BGX0(DLM4), 2:BGX0(DLM5)
+ cvmx_gserx_cfg_t gser1, gser2;
+
+ gser1.u64 = csr_rd(CVMX_GSERX_CFG(4));
+ gser2.u64 = csr_rd(CVMX_GSERX_CFG(5));
+ if (gser1.s.bgx && gser2.s.bgx) {
+ start = 0;
+ end = 4;
+ } else if (gser1.s.bgx) {
+ start = 0;
+ end = 2;
+ mux = 1;
+ } else if (gser2.s.bgx) {
+ start = 2;
+ end = 4;
+ mux = 2;
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ return qlm_mode[qlm];
+ }
+
+ for (index = start; index < end; index++) {
+ cmr_config.u64 = csr_rd(CVMX_BGXX_CMRX_CONFIG(index, bgx));
+ pmd_control.u64 = csr_rd(CVMX_BGXX_SPUX_BR_PMD_CONTROL(index, bgx));
+ lane_mask |= (cmr_config.s.lmac_type << (index * 4));
+ train_mask |= (pmd_control.s.train_en << (index * 4));
+ }
+
+ switch (lane_mask) {
+ case 0:
+ if (mux == 1 || mux == 2)
+ qlm_mode[qlm] = CVMX_QLM_MODE_SGMII_2X1;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_SGMII;
+ break;
+ case 0x3300:
+ if (mux == 0)
+ qlm_mode[qlm] = CVMX_QLM_MODE_MIXED;
+ else if (mux == 2)
+ if (train_mask)
+ qlm_mode[qlm] = CVMX_QLM_MODE_10G_KR_1X2;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_XFI_1X2;
+ else
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ default:
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ break;
+ }
+ } else {
+ qlm_mode[qlm] = CVMX_QLM_MODE_DISABLED;
+ }
+
+ return qlm_mode[qlm];
+}
+
+/*
+ * Read QLM and return mode.
+ */
+enum cvmx_qlm_mode cvmx_qlm_get_mode(int qlm)
+{
+ if (OCTEON_IS_OCTEON2())
+ return __cvmx_qlm_get_mode_cn6xxx(qlm);
+ else if (OCTEON_IS_MODEL(OCTEON_CN70XX))
+ return __cvmx_qlm_get_mode_cn70xx(qlm);
+ else if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ return cvmx_qlm_get_mode_cn78xx(cvmx_get_node_num(), qlm);
+ else if (OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return __cvmx_qlm_get_mode_cn73xx(qlm);
+ else if (OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return __cvmx_qlm_get_mode_cnf75xx(qlm);
+
+ return CVMX_QLM_MODE_DISABLED;
+}
+
+int cvmx_qlm_measure_clock_cn7xxx(int node, int qlm)
+{
+ cvmx_gserx_cfg_t cfg;
+ cvmx_gserx_refclk_sel_t refclk_sel;
+ cvmx_gserx_lane_mode_t lane_mode;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
+ if (node != 0 || qlm >= 7)
+ return -1;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
+ if (qlm >= 8 || node > 1)
+ return -1; /* FIXME for OCI */
+ } else {
+ debug("%s: Unsupported OCTEON model\n", __func__);
+ return -1;
+ }
+
+ cfg.u64 = csr_rd_node(node, CVMX_GSERX_CFG(qlm));
+
+ if (cfg.s.pcie) {
+ refclk_sel.u64 = csr_rd_node(node, CVMX_GSERX_REFCLK_SEL(qlm));
+ if (refclk_sel.s.pcie_refclk125)
+ return REF_125MHZ; /* Ref 125 Mhz */
+ else
+ return REF_100MHZ; /* Ref 100Mhz */
+ }
+
+ lane_mode.u64 = csr_rd_node(node, CVMX_GSERX_LANE_MODE(qlm));
+ switch (lane_mode.s.lmode) {
+ case R_25G_REFCLK100:
+ return REF_100MHZ;
+ case R_5G_REFCLK100:
+ return REF_100MHZ;
+ case R_8G_REFCLK100:
+ return REF_100MHZ;
+ case R_125G_REFCLK15625_KX:
+ return REF_156MHZ;
+ case R_3125G_REFCLK15625_XAUI:
+ return REF_156MHZ;
+ case R_103125G_REFCLK15625_KR:
+ return REF_156MHZ;
+ case R_125G_REFCLK15625_SGMII:
+ return REF_156MHZ;
+ case R_5G_REFCLK15625_QSGMII:
+ return REF_156MHZ;
+ case R_625G_REFCLK15625_RXAUI:
+ return REF_156MHZ;
+ case R_25G_REFCLK125:
+ return REF_125MHZ;
+ case R_5G_REFCLK125:
+ return REF_125MHZ;
+ case R_8G_REFCLK125:
+ return REF_125MHZ;
+ default:
+ return 0;
+ }
+}
+
+/**
+ * Measure the reference clock of a QLM on a multi-node setup
+ *
+ * @param node node to measure
+ * @param qlm QLM to measure
+ *
+ * @return Clock rate in Hz
+ */
+int cvmx_qlm_measure_clock_node(int node, int qlm)
+{
+ if (octeon_has_feature(OCTEON_FEATURE_MULTINODE))
+ return cvmx_qlm_measure_clock_cn7xxx(node, qlm);
+ else
+ return cvmx_qlm_measure_clock(qlm);
+}
+
+/**
+ * Measure the reference clock of a QLM
+ *
+ * @param qlm QLM to measure
+ *
+ * @return Clock rate in Hz
+ */
+int cvmx_qlm_measure_clock(int qlm)
+{
+ cvmx_mio_ptp_clock_cfg_t ptp_clock;
+ u64 count;
+ u64 start_cycle, stop_cycle;
+ int evcnt_offset = 0x10;
+ int incr_count = 1;
+ int ref_clock[16] = { 0 };
+
+ if (ref_clock[qlm])
+ return ref_clock[qlm];
+
+ if (OCTEON_IS_OCTEON3() && !OCTEON_IS_MODEL(OCTEON_CN70XX))
+ return cvmx_qlm_measure_clock_cn7xxx(cvmx_get_node_num(), qlm);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN70XX) && qlm == 0) {
+ cvmx_gserx_dlmx_ref_clkdiv2_t ref_clkdiv2;
+
+ ref_clkdiv2.u64 = csr_rd(CVMX_GSERX_DLMX_REF_CLKDIV2(qlm, 0));
+ if (ref_clkdiv2.s.ref_clkdiv2)
+ incr_count = 2;
+ }
+
+ /* Fix reference clock for OCI QLMs */
+
+ /* Disable the PTP event counter while we configure it */
+ ptp_clock.u64 = csr_rd(CVMX_MIO_PTP_CLOCK_CFG); /* For CN63XXp1 errata */
+ ptp_clock.s.evcnt_en = 0;
+ csr_wr(CVMX_MIO_PTP_CLOCK_CFG, ptp_clock.u64);
+
+ /* Count on rising edge, Choose which QLM to count */
+ ptp_clock.u64 = csr_rd(CVMX_MIO_PTP_CLOCK_CFG); /* For CN63XXp1 errata */
+ ptp_clock.s.evcnt_edge = 0;
+ ptp_clock.s.evcnt_in = evcnt_offset + qlm;
+ csr_wr(CVMX_MIO_PTP_CLOCK_CFG, ptp_clock.u64);
+
+ /* Clear MIO_PTP_EVT_CNT */
+ csr_rd(CVMX_MIO_PTP_EVT_CNT); /* For CN63XXp1 errata */
+ count = csr_rd(CVMX_MIO_PTP_EVT_CNT);
+ csr_wr(CVMX_MIO_PTP_EVT_CNT, -count);
+
+ /* Set MIO_PTP_EVT_CNT to 1 billion */
+ csr_wr(CVMX_MIO_PTP_EVT_CNT, 1000000000);
+
+ /* Enable the PTP event counter */
+ ptp_clock.u64 = csr_rd(CVMX_MIO_PTP_CLOCK_CFG); /* For CN63XXp1 errata */
+ ptp_clock.s.evcnt_en = 1;
+ csr_wr(CVMX_MIO_PTP_CLOCK_CFG, ptp_clock.u64);
+
+ start_cycle = get_ticks();
+ /* Wait for 50ms */
+ mdelay(50);
+
+ /* Read the counter */
+ csr_rd(CVMX_MIO_PTP_EVT_CNT); /* For CN63XXp1 errata */
+ count = csr_rd(CVMX_MIO_PTP_EVT_CNT);
+ stop_cycle = get_ticks();
+
+ /* Disable the PTP event counter */
+ ptp_clock.u64 = csr_rd(CVMX_MIO_PTP_CLOCK_CFG); /* For CN63XXp1 errata */
+ ptp_clock.s.evcnt_en = 0;
+ csr_wr(CVMX_MIO_PTP_CLOCK_CFG, ptp_clock.u64);
+
+ /* Clock counted down, so reverse it */
+ count = 1000000000 - count;
+ count *= incr_count;
+
+ /* Return the rate */
+ ref_clock[qlm] = count * gd->cpu_clk / (stop_cycle - start_cycle);
+
+ return ref_clock[qlm];
+}
+
+/*
+ * Perform RX equalization on a QLM
+ *
+ * @param node Node the QLM is on
+ * @param qlm QLM to perform RX equalization on
+ * @param lane Lane to use, or -1 for all lanes
+ *
+ * @return Zero on success, negative if any lane failed RX equalization
+ */
+int __cvmx_qlm_rx_equalization(int node, int qlm, int lane)
+{
+ cvmx_gserx_phy_ctl_t phy_ctl;
+ cvmx_gserx_br_rxx_ctl_t rxx_ctl;
+ cvmx_gserx_br_rxx_eer_t rxx_eer;
+ cvmx_gserx_rx_eie_detsts_t eie_detsts;
+ int fail, gbaud, l, lane_mask;
+ enum cvmx_qlm_mode mode;
+ int max_lanes = cvmx_qlm_get_lanes(qlm);
+ cvmx_gserx_lane_mode_t lmode;
+ cvmx_gserx_lane_px_mode_1_t pmode_1;
+ int pending = 0;
+ u64 timeout;
+
+ /* Don't touch QLMs if it is reset or powered down */
+ phy_ctl.u64 = csr_rd_node(node, CVMX_GSERX_PHY_CTL(qlm));
+ if (phy_ctl.s.phy_pd || phy_ctl.s.phy_reset)
+ return -1;
+
+ /*
+ * Check whether GSER PRBS pattern matcher is enabled on any of the
+ * applicable lanes. Can't complete RX Equalization while pattern
+ * matcher is enabled because it causes errors
+ */
+ for (l = 0; l < max_lanes; l++) {
+ cvmx_gserx_lanex_lbert_cfg_t lbert_cfg;
+
+ if (lane != -1 && lane != l)
+ continue;
+
+ lbert_cfg.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_LBERT_CFG(l, qlm));
+ if (lbert_cfg.s.lbert_pm_en == 1)
+ return -1;
+ }
+
+ /* Get Lane Mode */
+ lmode.u64 = csr_rd_node(node, CVMX_GSERX_LANE_MODE(qlm));
+
+ /*
+ * Check to see if in VMA manual mode is set. If in VMA manual mode
+ * don't complete rx equalization
+ */
+ pmode_1.u64 = csr_rd_node(node, CVMX_GSERX_LANE_PX_MODE_1(lmode.s.lmode, qlm));
+ if (pmode_1.s.vma_mm == 1) {
+#ifdef DEBUG_QLM
+ debug("N%d:QLM%d: VMA Manual (manual DFE) selected. Not completing Rx equalization\n",
+ node, qlm);
+#endif
+ return 0;
+ }
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
+ gbaud = cvmx_qlm_get_gbaud_mhz_node(node, qlm);
+ mode = cvmx_qlm_get_mode_cn78xx(node, qlm);
+ } else {
+ gbaud = cvmx_qlm_get_gbaud_mhz(qlm);
+ mode = cvmx_qlm_get_mode(qlm);
+ }
+
+ /* Apply RX Equalization for speed >= 8G */
+ if (qlm < 8) {
+ if (gbaud < 6250)
+ return 0;
+ }
+
+ /* Don't run on PCIe Links */
+ if (mode == CVMX_QLM_MODE_PCIE || mode == CVMX_QLM_MODE_PCIE_1X8 ||
+ mode == CVMX_QLM_MODE_PCIE_1X2 || mode == CVMX_QLM_MODE_PCIE_2X1)
+ return -1;
+
+ fail = 0;
+
+ /*
+ * Before completing Rx equalization wait for
+ * GSERx_RX_EIE_DETSTS[CDRLOCK] to be set.
+ * This ensures the rx data is valid
+ */
+ if (lane == -1) {
+ /*
+ * check all 4 Lanes (cdrlock = 1111/b) for CDR Lock with
+ * lane == -1
+ */
+ if (CVMX_WAIT_FOR_FIELD64_NODE(node, CVMX_GSERX_RX_EIE_DETSTS(qlm),
+ cvmx_gserx_rx_eie_detsts_t, cdrlock, ==,
+ (1 << max_lanes) - 1, 500)) {
+#ifdef DEBUG_QLM
+ eie_detsts.u64 = csr_rd_node(node, CVMX_GSERX_RX_EIE_DETSTS(qlm));
+ debug("ERROR: %d:QLM%d: CDR Lock not detected for all 4 lanes. CDR_LOCK(0x%x)\n",
+ node, qlm, eie_detsts.s.cdrlock);
+#endif
+ return -1;
+ }
+ } else {
+ if (CVMX_WAIT_FOR_FIELD64_NODE(node, CVMX_GSERX_RX_EIE_DETSTS(qlm),
+ cvmx_gserx_rx_eie_detsts_t, cdrlock, &, (1 << lane),
+ 500)) {
+#ifdef DEBUG_QLM
+ eie_detsts.u64 = csr_rd_node(node, CVMX_GSERX_RX_EIE_DETSTS(qlm));
+ debug("ERROR: %d:QLM%d: CDR Lock not detected for Lane%d CDR_LOCK(0x%x)\n",
+ node, qlm, lane, eie_detsts.s.cdrlock);
+#endif
+ return -1;
+ }
+ }
+
+ /*
+ * Errata (GSER-20075) GSER(0..13)_BR_RX3_EER[RXT_ERR] is
+ * GSER(0..13)_BR_RX2_EER[RXT_ERR]. Since lanes 2-3 trigger@the
+ * same time, we need to setup lane 3 before we loop through the lanes
+ */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && (lane == -1 || lane == 3)) {
+ /* Enable software control */
+ rxx_ctl.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_CTL(3, qlm));
+ rxx_ctl.s.rxt_swm = 1;
+ csr_wr_node(node, CVMX_GSERX_BR_RXX_CTL(3, qlm), rxx_ctl.u64);
+
+ /* Clear the completion flag */
+ rxx_eer.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_EER(3, qlm));
+ rxx_eer.s.rxt_esv = 0;
+ csr_wr_node(node, CVMX_GSERX_BR_RXX_EER(3, qlm), rxx_eer.u64);
+ /* Initiate a new request on lane 2 */
+ if (lane == 3) {
+ rxx_eer.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_EER(2, qlm));
+ rxx_eer.s.rxt_eer = 1;
+ csr_wr_node(node, CVMX_GSERX_BR_RXX_EER(2, qlm), rxx_eer.u64);
+ }
+ }
+
+ for (l = 0; l < max_lanes; l++) {
+ if (lane != -1 && lane != l)
+ continue;
+
+ /*
+ * Skip lane 3 on 78p1.x due to Errata (GSER-20075).
+ * Handled above
+ */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && l == 3) {
+ /*
+ * Need to add lane 3 to pending list for 78xx
+ * pass 1.x
+ */
+ pending |= 1 << 3;
+ continue;
+ }
+ /* Enable software control */
+ rxx_ctl.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_CTL(l, qlm));
+ rxx_ctl.s.rxt_swm = 1;
+ csr_wr_node(node, CVMX_GSERX_BR_RXX_CTL(l, qlm), rxx_ctl.u64);
+
+ /* Clear the completion flag and initiate a new request */
+ rxx_eer.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_EER(l, qlm));
+ rxx_eer.s.rxt_esv = 0;
+ rxx_eer.s.rxt_eer = 1;
+ csr_wr_node(node, CVMX_GSERX_BR_RXX_EER(l, qlm), rxx_eer.u64);
+ pending |= 1 << l;
+ }
+
+ /*
+ * Wait for 250ms, approx 10x times measured value, as XFI/XLAUI
+ * can take 21-23ms, other interfaces can take 2-3ms.
+ */
+ timeout = get_timer(0);
+
+ lane_mask = 0;
+ while (pending) {
+ /* Wait for RX equalization to complete */
+ for (l = 0; l < max_lanes; l++) {
+ lane_mask = 1 << l;
+ /* Only check lanes that are pending */
+ if (!(pending & lane_mask))
+ continue;
+
+ /*
+ * Read the registers for checking Electrical Idle/CDR
+ * lock and the status of the RX equalization
+ */
+ eie_detsts.u64 = csr_rd_node(node, CVMX_GSERX_RX_EIE_DETSTS(qlm));
+ rxx_eer.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_EER(l, qlm));
+
+ /*
+ * Mark failure if lane entered Electrical Idle or lost
+ * CDR Lock. The bit for the lane will have cleared in
+ * either EIESTS or CDRLOCK
+ */
+ if (!(eie_detsts.s.eiests & eie_detsts.s.cdrlock & lane_mask)) {
+ fail |= lane_mask;
+ pending &= ~lane_mask;
+ } else if (rxx_eer.s.rxt_esv) {
+ pending &= ~lane_mask;
+ }
+ }
+
+ /* Breakout of the loop on timeout */
+ if (get_timer(timeout) > 250)
+ break;
+ }
+
+ lane_mask = 0;
+ /* Cleanup and report status */
+ for (l = 0; l < max_lanes; l++) {
+ if (lane != -1 && lane != l)
+ continue;
+
+ lane_mask = 1 << l;
+ rxx_eer.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_EER(l, qlm));
+ /* Switch back to hardware control */
+ rxx_ctl.u64 = csr_rd_node(node, CVMX_GSERX_BR_RXX_CTL(l, qlm));
+ rxx_ctl.s.rxt_swm = 0;
+ csr_wr_node(node, CVMX_GSERX_BR_RXX_CTL(l, qlm), rxx_ctl.u64);
+
+ /* Report status */
+ if (fail & lane_mask) {
+#ifdef DEBUG_QLM
+ debug("%d:QLM%d: Lane%d RX equalization lost CDR Lock or entered Electrical Idle\n",
+ node, qlm, l);
+#endif
+ } else if ((pending & lane_mask) || !rxx_eer.s.rxt_esv) {
+#ifdef DEBUG_QLM
+ debug("%d:QLM%d: Lane %d RX equalization timeout\n", node, qlm, l);
+#endif
+ fail |= 1 << l;
+ } else {
+#ifdef DEBUG_QLM
+ char *dir_label[4] = { "Hold", "Inc", "Dec", "Hold" };
+#ifdef DEBUG_QLM_RX
+ cvmx_gserx_lanex_rx_aeq_out_0_t rx_aeq_out_0;
+ cvmx_gserx_lanex_rx_aeq_out_1_t rx_aeq_out_1;
+ cvmx_gserx_lanex_rx_aeq_out_2_t rx_aeq_out_2;
+ cvmx_gserx_lanex_rx_vma_status_0_t rx_vma_status_0;
+#endif
+ debug("%d:QLM%d: Lane%d: RX equalization completed.\n", node, qlm, l);
+ debug(" Tx Direction Hints TXPRE: %s, TXMAIN: %s, TXPOST: %s, Figure of Merit: %d\n",
+ dir_label[(rxx_eer.s.rxt_esm) & 0x3],
+ dir_label[((rxx_eer.s.rxt_esm) >> 2) & 0x3],
+ dir_label[((rxx_eer.s.rxt_esm) >> 4) & 0x3], rxx_eer.s.rxt_esm >> 6);
+
+#ifdef DEBUG_QLM_RX
+ rx_aeq_out_0.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_RX_AEQ_OUT_0(l, qlm));
+ rx_aeq_out_1.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_RX_AEQ_OUT_1(l, qlm));
+ rx_aeq_out_2.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_RX_AEQ_OUT_2(l, qlm));
+ rx_vma_status_0.u64 =
+ csr_rd_node(node, CVMX_GSERX_LANEX_RX_VMA_STATUS_0(l, qlm));
+ debug(" DFE Tap1:%lu, Tap2:%ld, Tap3:%ld, Tap4:%ld, Tap5:%ld\n",
+ (unsigned int long)cvmx_bit_extract(rx_aeq_out_1.u64, 0, 5),
+ (unsigned int long)cvmx_bit_extract_smag(rx_aeq_out_1.u64, 5, 9),
+ (unsigned int long)cvmx_bit_extract_smag(rx_aeq_out_1.u64, 10, 14),
+ (unsigned int long)cvmx_bit_extract_smag(rx_aeq_out_0.u64, 0, 4),
+ (unsigned int long)cvmx_bit_extract_smag(rx_aeq_out_0.u64, 5, 9));
+ debug(" Pre-CTLE Gain:%lu, Post-CTLE Gain:%lu, CTLE Peak:%lu, CTLE Pole:%lu\n",
+ (unsigned int long)cvmx_bit_extract(rx_aeq_out_2.u64, 4, 4),
+ (unsigned int long)cvmx_bit_extract(rx_aeq_out_2.u64, 0, 4),
+ (unsigned int long)cvmx_bit_extract(rx_vma_status_0.u64, 2, 4),
+ (unsigned int long)cvmx_bit_extract(rx_vma_status_0.u64, 0, 2));
+#endif
+#endif
+ }
+ }
+
+ return (fail) ? -1 : 0;
+}
+
+/**
+ * Errata GSER-27882 -GSER 10GBASE-KR Transmit Equalizer
+ * Training may not update PHY Tx Taps. This function is not static
+ * so we can share it with BGX KR
+ *
+ * @param node Node to apply errata workaround
+ * @param qlm QLM to apply errata workaround
+ * @param lane Lane to apply the errata
+ */
+int cvmx_qlm_gser_errata_27882(int node, int qlm, int lane)
+{
+ cvmx_gserx_lanex_pcs_ctlifc_0_t clifc0;
+ cvmx_gserx_lanex_pcs_ctlifc_2_t clifc2;
+
+ if (!(OCTEON_IS_MODEL(OCTEON_CN73XX_PASS1_0) || OCTEON_IS_MODEL(OCTEON_CN73XX_PASS1_1) ||
+ OCTEON_IS_MODEL(OCTEON_CN73XX_PASS1_2) || OCTEON_IS_MODEL(OCTEON_CNF75XX_PASS1_0) ||
+ OCTEON_IS_MODEL(OCTEON_CN78XX)))
+ return 0;
+
+ if (CVMX_WAIT_FOR_FIELD64_NODE(node, CVMX_GSERX_RX_EIE_DETSTS(qlm),
+ cvmx_gserx_rx_eie_detsts_t, cdrlock, &,
+ (1 << lane), 200))
+ return -1;
+
+ clifc0.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_0(lane, qlm));
+ clifc0.s.cfg_tx_coeff_req_ovrrd_val = 1;
+ csr_wr_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_0(lane, qlm), clifc0.u64);
+ clifc2.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm));
+ clifc2.s.cfg_tx_coeff_req_ovrrd_en = 1;
+ csr_wr_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm), clifc2.u64);
+ clifc2.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm));
+ clifc2.s.ctlifc_ovrrd_req = 1;
+ csr_wr_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm), clifc2.u64);
+ clifc2.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm));
+ clifc2.s.cfg_tx_coeff_req_ovrrd_en = 0;
+ csr_wr_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm), clifc2.u64);
+ clifc2.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm));
+ clifc2.s.ctlifc_ovrrd_req = 1;
+ csr_wr_node(node, CVMX_GSERX_LANEX_PCS_CTLIFC_2(lane, qlm), clifc2.u64);
+ return 0;
+}
+
+/**
+ * Updates the RX EQ Default Settings Update (CTLE Bias) to support longer
+ * SERDES channels
+ *
+ * @INTERNAL
+ *
+ * @param node Node number to configure
+ * @param qlm QLM number to configure
+ */
+void cvmx_qlm_gser_errata_25992(int node, int qlm)
+{
+ int lane;
+ int num_lanes = cvmx_qlm_get_lanes(qlm);
+
+ if (!(OCTEON_IS_MODEL(OCTEON_CN73XX_PASS1_0) || OCTEON_IS_MODEL(OCTEON_CN73XX_PASS1_1) ||
+ OCTEON_IS_MODEL(OCTEON_CN73XX_PASS1_2) || OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)))
+ return;
+
+ for (lane = 0; lane < num_lanes; lane++) {
+ cvmx_gserx_lanex_rx_ctle_ctrl_t rx_ctle_ctrl;
+ cvmx_gserx_lanex_rx_cfg_4_t rx_cfg_4;
+
+ rx_ctle_ctrl.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_RX_CTLE_CTRL(lane, qlm));
+ rx_ctle_ctrl.s.pcs_sds_rx_ctle_bias_ctrl = 3;
+ csr_wr_node(node, CVMX_GSERX_LANEX_RX_CTLE_CTRL(lane, qlm), rx_ctle_ctrl.u64);
+
+ rx_cfg_4.u64 = csr_rd_node(node, CVMX_GSERX_LANEX_RX_CFG_4(lane, qlm));
+ rx_cfg_4.s.cfg_rx_errdet_ctrl = 0xcd6f;
+ csr_wr_node(node, CVMX_GSERX_LANEX_RX_CFG_4(lane, qlm), rx_cfg_4.u64);
+ }
+}
+
+void cvmx_qlm_display_registers(int qlm)
+{
+ int num_lanes = cvmx_qlm_get_lanes(qlm);
+ int lane;
+ const __cvmx_qlm_jtag_field_t *ptr = cvmx_qlm_jtag_get_field();
+
+ debug("%29s", "Field[<stop bit>:<start bit>]");
+ for (lane = 0; lane < num_lanes; lane++)
+ debug("\t Lane %d", lane);
+ debug("\n");
+
+ while (ptr && ptr->name) {
+ debug("%20s[%3d:%3d]", ptr->name, ptr->stop_bit, ptr->start_bit);
+ for (lane = 0; lane < num_lanes; lane++) {
+ u64 val;
+ int tx_byp = 0;
+
+ /*
+ * Make sure serdes_tx_byp is set for displaying
+ * TX amplitude and TX demphasis field values.
+ */
+ if (strncmp(ptr->name, "biasdrv_", 8) == 0 ||
+ strncmp(ptr->name, "tcoeff_", 7) == 0) {
+ tx_byp = cvmx_qlm_jtag_get(qlm, lane, "serdes_tx_byp");
+ if (tx_byp == 0) {
+ debug("\t \t");
+ continue;
+ }
+ }
+ val = cvmx_qlm_jtag_get(qlm, lane, ptr->name);
+ debug("\t%4llu (0x%04llx)", (unsigned long long)val,
+ (unsigned long long)val);
+ }
+ debug("\n");
+ ptr++;
+ }
+}
+
+/* ToDo: CVMX_DUMP_GSER removed for now (unused!) */
--
2.29.2