| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David Daney | 1870 | 99.42% | 2 | 28.57% |
| Chris Packham | 6 | 0.32% | 1 | 14.29% |
| Ralf Baechle | 2 | 0.11% | 1 | 14.29% |
| Aaro Koskinen | 1 | 0.05% | 1 | 14.29% |
| Stephen Boyd | 1 | 0.05% | 1 | 14.29% |
| Steven J. Hill | 1 | 0.05% | 1 | 14.29% |
| Total | 1881 | 7 |
/***********************license start*************** * Author: Cavium Networks * * Contact: support@caviumnetworks.com * This file is part of the OCTEON SDK * * Copyright (C) 2003-2018 Cavium, Inc. * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as * published by the Free Software Foundation. * * This file is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this file; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * or visit http://www.gnu.org/licenses/. * * This file may also be available under a different license from Cavium. * Contact Cavium Networks for more information ***********************license end**************************************/ /* * Functions for RGMII/GMII/MII initialization, configuration, * and monitoring. */ #include <asm/octeon/octeon.h> #include <asm/octeon/cvmx-config.h> #include <asm/octeon/cvmx-pko.h> #include <asm/octeon/cvmx-helper.h> #include <asm/octeon/cvmx-helper-board.h> #include <asm/octeon/cvmx-npi-defs.h> #include <asm/octeon/cvmx-gmxx-defs.h> #include <asm/octeon/cvmx-asxx-defs.h> #include <asm/octeon/cvmx-dbg-defs.h> /** * Probe RGMII ports and determine the number present * * @interface: Interface to probe * * Returns Number of RGMII/GMII/MII ports (0-4). */ int __cvmx_helper_rgmii_probe(int interface) { int num_ports = 0; union cvmx_gmxx_inf_mode mode; mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface)); if (mode.s.type) { if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)) { cvmx_dprintf("ERROR: RGMII initialize called in " "SPI interface\n"); } else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) { /* * On these chips "type" says we're in * GMII/MII mode. This limits us to 2 ports */ num_ports = 2; } else { cvmx_dprintf("ERROR: Unsupported Octeon model in %s\n", __func__); } } else { if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)) { num_ports = 4; } else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) { num_ports = 3; } else { cvmx_dprintf("ERROR: Unsupported Octeon model in %s\n", __func__); } } return num_ports; } /** * Put an RGMII interface in loopback mode. Internal packets sent * out will be received back again on the same port. Externally * received packets will echo back out. * * @port: IPD port number to loop. */ void cvmx_helper_rgmii_internal_loopback(int port) { int interface = (port >> 4) & 1; int index = port & 0xf; uint64_t tmp; union cvmx_gmxx_prtx_cfg gmx_cfg; gmx_cfg.u64 = 0; gmx_cfg.s.duplex = 1; gmx_cfg.s.slottime = 1; gmx_cfg.s.speed = 1; cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 1); cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x200); cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0x2000); cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); tmp = cvmx_read_csr(CVMX_ASXX_PRT_LOOP(interface)); cvmx_write_csr(CVMX_ASXX_PRT_LOOP(interface), (1 << index) | tmp); tmp = cvmx_read_csr(CVMX_ASXX_TX_PRT_EN(interface)); cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(interface), (1 << index) | tmp); tmp = cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface)); cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface), (1 << index) | tmp); gmx_cfg.s.en = 1; cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); } /** * Workaround ASX setup errata with CN38XX pass1 * * @interface: Interface to setup * @port: Port to setup (0..3) * @cpu_clock_hz: * Chip frequency in Hertz * * Returns Zero on success, negative on failure */ static int __cvmx_helper_errata_asx_pass1(int interface, int port, int cpu_clock_hz) { /* Set hi water mark as per errata GMX-4 */ if (cpu_clock_hz >= 325000000 && cpu_clock_hz < 375000000) cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 12); else if (cpu_clock_hz >= 375000000 && cpu_clock_hz < 437000000) cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 11); else if (cpu_clock_hz >= 437000000 && cpu_clock_hz < 550000000) cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 10); else if (cpu_clock_hz >= 550000000 && cpu_clock_hz < 687000000) cvmx_write_csr(CVMX_ASXX_TX_HI_WATERX(port, interface), 9); else cvmx_dprintf("Illegal clock frequency (%d). " "CVMX_ASXX_TX_HI_WATERX not set\n", cpu_clock_hz); return 0; } /** * Configure all of the ASX, GMX, and PKO registers required * to get RGMII to function on the supplied interface. * * @interface: PKO Interface to configure (0 or 1) * * Returns Zero on success */ int __cvmx_helper_rgmii_enable(int interface) { int num_ports = cvmx_helper_ports_on_interface(interface); int port; struct cvmx_sysinfo *sys_info_ptr = cvmx_sysinfo_get(); union cvmx_gmxx_inf_mode mode; union cvmx_asxx_tx_prt_en asx_tx; union cvmx_asxx_rx_prt_en asx_rx; mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface)); if (mode.s.en == 0) return -1; if ((OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)) && mode.s.type == 1) /* Ignore SPI interfaces */ return -1; /* Configure the ASX registers needed to use the RGMII ports */ asx_tx.u64 = 0; asx_tx.s.prt_en = cvmx_build_mask(num_ports); cvmx_write_csr(CVMX_ASXX_TX_PRT_EN(interface), asx_tx.u64); asx_rx.u64 = 0; asx_rx.s.prt_en = cvmx_build_mask(num_ports); cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface), asx_rx.u64); /* Configure the GMX registers needed to use the RGMII ports */ for (port = 0; port < num_ports; port++) { /* Setting of CVMX_GMXX_TXX_THRESH has been moved to __cvmx_helper_setup_gmx() */ if (cvmx_octeon_is_pass1()) __cvmx_helper_errata_asx_pass1(interface, port, sys_info_ptr-> cpu_clock_hz); else { /* * Configure more flexible RGMII preamble * checking. Pass 1 doesn't support this * feature. */ union cvmx_gmxx_rxx_frm_ctl frm_ctl; frm_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL (port, interface)); /* New field, so must be compile time */ frm_ctl.s.pre_free = 1; cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL(port, interface), frm_ctl.u64); } /* * Each pause frame transmitted will ask for about 10M * bit times before resume. If buffer space comes * available before that time has expired, an XON * pause frame (0 time) will be transmitted to restart * the flow. */ cvmx_write_csr(CVMX_GMXX_TXX_PAUSE_PKT_TIME(port, interface), 20000); cvmx_write_csr(CVMX_GMXX_TXX_PAUSE_PKT_INTERVAL (port, interface), 19000); if (OCTEON_IS_MODEL(OCTEON_CN50XX)) { cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, interface), 16); cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, interface), 16); } else { cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, interface), 24); cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, interface), 24); } } __cvmx_helper_setup_gmx(interface, num_ports); /* enable the ports now */ for (port = 0; port < num_ports; port++) { union cvmx_gmxx_prtx_cfg gmx_cfg; gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(port, interface)); gmx_cfg.s.en = 1; cvmx_write_csr(CVMX_GMXX_PRTX_CFG(port, interface), gmx_cfg.u64); } __cvmx_interrupt_asxx_enable(interface); __cvmx_interrupt_gmxx_enable(interface); return 0; } /** * Return the link state of an IPD/PKO port as returned by * auto negotiation. The result of this function may not match * Octeon's link config if auto negotiation has changed since * the last call to cvmx_helper_link_set(). * * @ipd_port: IPD/PKO port to query * * Returns Link state */ union cvmx_helper_link_info __cvmx_helper_rgmii_link_get(int ipd_port) { int interface = cvmx_helper_get_interface_num(ipd_port); int index = cvmx_helper_get_interface_index_num(ipd_port); union cvmx_asxx_prt_loop asxx_prt_loop; asxx_prt_loop.u64 = cvmx_read_csr(CVMX_ASXX_PRT_LOOP(interface)); if (asxx_prt_loop.s.int_loop & (1 << index)) { /* Force 1Gbps full duplex on internal loopback */ union cvmx_helper_link_info result; result.u64 = 0; result.s.full_duplex = 1; result.s.link_up = 1; result.s.speed = 1000; return result; } else return __cvmx_helper_board_link_get(ipd_port); } /** * Configure an IPD/PKO port for the specified link state. This * function does not influence auto negotiation at the PHY level. * The passed link state must always match the link state returned * by cvmx_helper_link_get(). * * @ipd_port: IPD/PKO port to configure * @link_info: The new link state * * Returns Zero on success, negative on failure */ int __cvmx_helper_rgmii_link_set(int ipd_port, union cvmx_helper_link_info link_info) { int result = 0; int interface = cvmx_helper_get_interface_num(ipd_port); int index = cvmx_helper_get_interface_index_num(ipd_port); union cvmx_gmxx_prtx_cfg original_gmx_cfg; union cvmx_gmxx_prtx_cfg new_gmx_cfg; union cvmx_pko_mem_queue_qos pko_mem_queue_qos; union cvmx_pko_mem_queue_qos pko_mem_queue_qos_save[16]; union cvmx_gmxx_tx_ovr_bp gmx_tx_ovr_bp; union cvmx_gmxx_tx_ovr_bp gmx_tx_ovr_bp_save; int i; /* Ignore speed sets in the simulator */ if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) return 0; /* Read the current settings so we know the current enable state */ original_gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); new_gmx_cfg = original_gmx_cfg; /* Disable the lowest level RX */ cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface), cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface)) & ~(1 << index)); memset(pko_mem_queue_qos_save, 0, sizeof(pko_mem_queue_qos_save)); /* Disable all queues so that TX should become idle */ for (i = 0; i < cvmx_pko_get_num_queues(ipd_port); i++) { int queue = cvmx_pko_get_base_queue(ipd_port) + i; cvmx_write_csr(CVMX_PKO_REG_READ_IDX, queue); pko_mem_queue_qos.u64 = cvmx_read_csr(CVMX_PKO_MEM_QUEUE_QOS); pko_mem_queue_qos.s.pid = ipd_port; pko_mem_queue_qos.s.qid = queue; pko_mem_queue_qos_save[i] = pko_mem_queue_qos; pko_mem_queue_qos.s.qos_mask = 0; cvmx_write_csr(CVMX_PKO_MEM_QUEUE_QOS, pko_mem_queue_qos.u64); } /* Disable backpressure */ gmx_tx_ovr_bp.u64 = cvmx_read_csr(CVMX_GMXX_TX_OVR_BP(interface)); gmx_tx_ovr_bp_save = gmx_tx_ovr_bp; gmx_tx_ovr_bp.s.bp &= ~(1 << index); gmx_tx_ovr_bp.s.en |= 1 << index; cvmx_write_csr(CVMX_GMXX_TX_OVR_BP(interface), gmx_tx_ovr_bp.u64); cvmx_read_csr(CVMX_GMXX_TX_OVR_BP(interface)); /* * Poll the GMX state machine waiting for it to become * idle. Preferably we should only change speed when it is * idle. If it doesn't become idle we will still do the speed * change, but there is a slight chance that GMX will * lockup. */ cvmx_write_csr(CVMX_NPI_DBG_SELECT, interface * 0x800 + index * 0x100 + 0x880); CVMX_WAIT_FOR_FIELD64(CVMX_DBG_DATA, union cvmx_dbg_data, data & 7, ==, 0, 10000); CVMX_WAIT_FOR_FIELD64(CVMX_DBG_DATA, union cvmx_dbg_data, data & 0xf, ==, 0, 10000); /* Disable the port before we make any changes */ new_gmx_cfg.s.en = 0; cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), new_gmx_cfg.u64); cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); /* Set full/half duplex */ if (cvmx_octeon_is_pass1()) /* Half duplex is broken for 38XX Pass 1 */ new_gmx_cfg.s.duplex = 1; else if (!link_info.s.link_up) /* Force full duplex on down links */ new_gmx_cfg.s.duplex = 1; else new_gmx_cfg.s.duplex = link_info.s.full_duplex; /* Set the link speed. Anything unknown is set to 1Gbps */ if (link_info.s.speed == 10) { new_gmx_cfg.s.slottime = 0; new_gmx_cfg.s.speed = 0; } else if (link_info.s.speed == 100) { new_gmx_cfg.s.slottime = 0; new_gmx_cfg.s.speed = 0; } else { new_gmx_cfg.s.slottime = 1; new_gmx_cfg.s.speed = 1; } /* Adjust the clocks */ if (link_info.s.speed == 10) { cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 50); cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x40); cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0); } else if (link_info.s.speed == 100) { cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 5); cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x40); cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0); } else { cvmx_write_csr(CVMX_GMXX_TXX_CLK(index, interface), 1); cvmx_write_csr(CVMX_GMXX_TXX_SLOT(index, interface), 0x200); cvmx_write_csr(CVMX_GMXX_TXX_BURST(index, interface), 0x2000); } if (OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) { if ((link_info.s.speed == 10) || (link_info.s.speed == 100)) { union cvmx_gmxx_inf_mode mode; mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface)); /* * Port .en .type .p0mii Configuration * ---- --- ----- ------ ----------------------------------------- * X 0 X X All links are disabled. * 0 1 X 0 Port 0 is RGMII * 0 1 X 1 Port 0 is MII * 1 1 0 X Ports 1 and 2 are configured as RGMII ports. * 1 1 1 X Port 1: GMII/MII; Port 2: disabled. GMII or * MII port is selected by GMX_PRT1_CFG[SPEED]. */ /* In MII mode, CLK_CNT = 1. */ if (((index == 0) && (mode.s.p0mii == 1)) || ((index != 0) && (mode.s.type == 1))) { cvmx_write_csr(CVMX_GMXX_TXX_CLK (index, interface), 1); } } } /* Do a read to make sure all setup stuff is complete */ cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); /* Save the new GMX setting without enabling the port */ cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), new_gmx_cfg.u64); /* Enable the lowest level RX */ cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(interface), cvmx_read_csr(CVMX_ASXX_RX_PRT_EN(interface)) | (1 << index)); /* Re-enable the TX path */ for (i = 0; i < cvmx_pko_get_num_queues(ipd_port); i++) { int queue = cvmx_pko_get_base_queue(ipd_port) + i; cvmx_write_csr(CVMX_PKO_REG_READ_IDX, queue); cvmx_write_csr(CVMX_PKO_MEM_QUEUE_QOS, pko_mem_queue_qos_save[i].u64); } /* Restore backpressure */ cvmx_write_csr(CVMX_GMXX_TX_OVR_BP(interface), gmx_tx_ovr_bp_save.u64); /* Restore the GMX enable state. Port config is complete */ new_gmx_cfg.s.en = original_gmx_cfg.s.en; cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), new_gmx_cfg.u64); return result; }
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