diff options
Diffstat (limited to 'drivers/staging/octeon/cvmx-helper-util.c')
-rw-r--r-- | drivers/staging/octeon/cvmx-helper-util.c | 433 |
1 files changed, 0 insertions, 433 deletions
diff --git a/drivers/staging/octeon/cvmx-helper-util.c b/drivers/staging/octeon/cvmx-helper-util.c deleted file mode 100644 index 131182bf5abb..000000000000 --- a/drivers/staging/octeon/cvmx-helper-util.c +++ /dev/null @@ -1,433 +0,0 @@ -/***********************license start*************** - * Author: Cavium Networks - * - * Contact: support@caviumnetworks.com - * This file is part of the OCTEON SDK - * - * Copyright (c) 2003-2008 Cavium Networks - * - * 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**************************************/ - -/* - * Small helper utilities. - */ -#include <linux/kernel.h> - -#include <asm/octeon/octeon.h> - -#include "cvmx-config.h" - -#include "cvmx-fpa.h" -#include "cvmx-pip.h" -#include "cvmx-pko.h" -#include "cvmx-ipd.h" -#include "cvmx-spi.h" - -#include "cvmx-helper.h" -#include "cvmx-helper-util.h" - -#include <asm/octeon/cvmx-ipd-defs.h> - -/** - * Convert a interface mode into a human readable string - * - * @mode: Mode to convert - * - * Returns String - */ -const char *cvmx_helper_interface_mode_to_string(cvmx_helper_interface_mode_t - mode) -{ - switch (mode) { - case CVMX_HELPER_INTERFACE_MODE_DISABLED: - return "DISABLED"; - case CVMX_HELPER_INTERFACE_MODE_RGMII: - return "RGMII"; - case CVMX_HELPER_INTERFACE_MODE_GMII: - return "GMII"; - case CVMX_HELPER_INTERFACE_MODE_SPI: - return "SPI"; - case CVMX_HELPER_INTERFACE_MODE_PCIE: - return "PCIE"; - case CVMX_HELPER_INTERFACE_MODE_XAUI: - return "XAUI"; - case CVMX_HELPER_INTERFACE_MODE_SGMII: - return "SGMII"; - case CVMX_HELPER_INTERFACE_MODE_PICMG: - return "PICMG"; - case CVMX_HELPER_INTERFACE_MODE_NPI: - return "NPI"; - case CVMX_HELPER_INTERFACE_MODE_LOOP: - return "LOOP"; - } - return "UNKNOWN"; -} - -/** - * Debug routine to dump the packet structure to the console - * - * @work: Work queue entry containing the packet to dump - * Returns - */ -int cvmx_helper_dump_packet(cvmx_wqe_t *work) -{ - uint64_t count; - uint64_t remaining_bytes; - union cvmx_buf_ptr buffer_ptr; - uint64_t start_of_buffer; - uint8_t *data_address; - uint8_t *end_of_data; - - cvmx_dprintf("Packet Length: %u\n", work->len); - cvmx_dprintf(" Input Port: %u\n", work->ipprt); - cvmx_dprintf(" QoS: %u\n", work->qos); - cvmx_dprintf(" Buffers: %u\n", work->word2.s.bufs); - - if (work->word2.s.bufs == 0) { - union cvmx_ipd_wqe_fpa_queue wqe_pool; - wqe_pool.u64 = cvmx_read_csr(CVMX_IPD_WQE_FPA_QUEUE); - buffer_ptr.u64 = 0; - buffer_ptr.s.pool = wqe_pool.s.wqe_pool; - buffer_ptr.s.size = 128; - buffer_ptr.s.addr = cvmx_ptr_to_phys(work->packet_data); - if (likely(!work->word2.s.not_IP)) { - union cvmx_pip_ip_offset pip_ip_offset; - pip_ip_offset.u64 = cvmx_read_csr(CVMX_PIP_IP_OFFSET); - buffer_ptr.s.addr += - (pip_ip_offset.s.offset << 3) - - work->word2.s.ip_offset; - buffer_ptr.s.addr += (work->word2.s.is_v6 ^ 1) << 2; - } else { - /* - * WARNING: This code assumes that the packet - * is not RAW. If it was, we would use - * PIP_GBL_CFG[RAW_SHF] instead of - * PIP_GBL_CFG[NIP_SHF]. - */ - union cvmx_pip_gbl_cfg pip_gbl_cfg; - pip_gbl_cfg.u64 = cvmx_read_csr(CVMX_PIP_GBL_CFG); - buffer_ptr.s.addr += pip_gbl_cfg.s.nip_shf; - } - } else - buffer_ptr = work->packet_ptr; - remaining_bytes = work->len; - - while (remaining_bytes) { - start_of_buffer = - ((buffer_ptr.s.addr >> 7) - buffer_ptr.s.back) << 7; - cvmx_dprintf(" Buffer Start:%llx\n", - (unsigned long long)start_of_buffer); - cvmx_dprintf(" Buffer I : %u\n", buffer_ptr.s.i); - cvmx_dprintf(" Buffer Back: %u\n", buffer_ptr.s.back); - cvmx_dprintf(" Buffer Pool: %u\n", buffer_ptr.s.pool); - cvmx_dprintf(" Buffer Data: %llx\n", - (unsigned long long)buffer_ptr.s.addr); - cvmx_dprintf(" Buffer Size: %u\n", buffer_ptr.s.size); - - cvmx_dprintf("\t\t"); - data_address = (uint8_t *) cvmx_phys_to_ptr(buffer_ptr.s.addr); - end_of_data = data_address + buffer_ptr.s.size; - count = 0; - while (data_address < end_of_data) { - if (remaining_bytes == 0) - break; - else - remaining_bytes--; - cvmx_dprintf("%02x", (unsigned int)*data_address); - data_address++; - if (remaining_bytes && (count == 7)) { - cvmx_dprintf("\n\t\t"); - count = 0; - } else - count++; - } - cvmx_dprintf("\n"); - - if (remaining_bytes) - buffer_ptr = *(union cvmx_buf_ptr *) - cvmx_phys_to_ptr(buffer_ptr.s.addr - 8); - } - return 0; -} - -/** - * Setup Random Early Drop on a specific input queue - * - * @queue: Input queue to setup RED on (0-7) - * @pass_thresh: - * Packets will begin slowly dropping when there are less than - * this many packet buffers free in FPA 0. - * @drop_thresh: - * All incomming packets will be dropped when there are less - * than this many free packet buffers in FPA 0. - * Returns Zero on success. Negative on failure - */ -int cvmx_helper_setup_red_queue(int queue, int pass_thresh, int drop_thresh) -{ - union cvmx_ipd_qosx_red_marks red_marks; - union cvmx_ipd_red_quex_param red_param; - - /* Set RED to begin dropping packets when there are pass_thresh buffers - left. It will linearly drop more packets until reaching drop_thresh - buffers */ - red_marks.u64 = 0; - red_marks.s.drop = drop_thresh; - red_marks.s.pass = pass_thresh; - cvmx_write_csr(CVMX_IPD_QOSX_RED_MARKS(queue), red_marks.u64); - - /* Use the actual queue 0 counter, not the average */ - red_param.u64 = 0; - red_param.s.prb_con = - (255ul << 24) / (red_marks.s.pass - red_marks.s.drop); - red_param.s.avg_con = 1; - red_param.s.new_con = 255; - red_param.s.use_pcnt = 1; - cvmx_write_csr(CVMX_IPD_RED_QUEX_PARAM(queue), red_param.u64); - return 0; -} - -/** - * Setup Random Early Drop to automatically begin dropping packets. - * - * @pass_thresh: - * Packets will begin slowly dropping when there are less than - * this many packet buffers free in FPA 0. - * @drop_thresh: - * All incomming packets will be dropped when there are less - * than this many free packet buffers in FPA 0. - * Returns Zero on success. Negative on failure - */ -int cvmx_helper_setup_red(int pass_thresh, int drop_thresh) -{ - union cvmx_ipd_portx_bp_page_cnt page_cnt; - union cvmx_ipd_bp_prt_red_end ipd_bp_prt_red_end; - union cvmx_ipd_red_port_enable red_port_enable; - int queue; - int interface; - int port; - - /* Disable backpressure based on queued buffers. It needs SW support */ - page_cnt.u64 = 0; - page_cnt.s.bp_enb = 0; - page_cnt.s.page_cnt = 100; - for (interface = 0; interface < 2; interface++) { - for (port = cvmx_helper_get_first_ipd_port(interface); - port < cvmx_helper_get_last_ipd_port(interface); port++) - cvmx_write_csr(CVMX_IPD_PORTX_BP_PAGE_CNT(port), - page_cnt.u64); - } - - for (queue = 0; queue < 8; queue++) - cvmx_helper_setup_red_queue(queue, pass_thresh, drop_thresh); - - /* Shutoff the dropping based on the per port page count. SW isn't - decrementing it right now */ - ipd_bp_prt_red_end.u64 = 0; - ipd_bp_prt_red_end.s.prt_enb = 0; - cvmx_write_csr(CVMX_IPD_BP_PRT_RED_END, ipd_bp_prt_red_end.u64); - - red_port_enable.u64 = 0; - red_port_enable.s.prt_enb = 0xfffffffffull; - red_port_enable.s.avg_dly = 10000; - red_port_enable.s.prb_dly = 10000; - cvmx_write_csr(CVMX_IPD_RED_PORT_ENABLE, red_port_enable.u64); - - return 0; -} - -/** - * Setup the common GMX settings that determine the number of - * ports. These setting apply to almost all configurations of all - * chips. - * - * @interface: Interface to configure - * @num_ports: Number of ports on the interface - * - * Returns Zero on success, negative on failure - */ -int __cvmx_helper_setup_gmx(int interface, int num_ports) -{ - union cvmx_gmxx_tx_prts gmx_tx_prts; - union cvmx_gmxx_rx_prts gmx_rx_prts; - union cvmx_pko_reg_gmx_port_mode pko_mode; - union cvmx_gmxx_txx_thresh gmx_tx_thresh; - int index; - - /* Tell GMX the number of TX ports on this interface */ - gmx_tx_prts.u64 = cvmx_read_csr(CVMX_GMXX_TX_PRTS(interface)); - gmx_tx_prts.s.prts = num_ports; - cvmx_write_csr(CVMX_GMXX_TX_PRTS(interface), gmx_tx_prts.u64); - - /* Tell GMX the number of RX ports on this interface. This only - ** applies to *GMII and XAUI ports */ - if (cvmx_helper_interface_get_mode(interface) == - CVMX_HELPER_INTERFACE_MODE_RGMII - || cvmx_helper_interface_get_mode(interface) == - CVMX_HELPER_INTERFACE_MODE_SGMII - || cvmx_helper_interface_get_mode(interface) == - CVMX_HELPER_INTERFACE_MODE_GMII - || cvmx_helper_interface_get_mode(interface) == - CVMX_HELPER_INTERFACE_MODE_XAUI) { - if (num_ports > 4) { - cvmx_dprintf("__cvmx_helper_setup_gmx: Illegal " - "num_ports\n"); - return -1; - } - - gmx_rx_prts.u64 = cvmx_read_csr(CVMX_GMXX_RX_PRTS(interface)); - gmx_rx_prts.s.prts = num_ports; - cvmx_write_csr(CVMX_GMXX_RX_PRTS(interface), gmx_rx_prts.u64); - } - - /* Skip setting CVMX_PKO_REG_GMX_PORT_MODE on 30XX, 31XX, and 50XX */ - if (!OCTEON_IS_MODEL(OCTEON_CN30XX) && !OCTEON_IS_MODEL(OCTEON_CN31XX) - && !OCTEON_IS_MODEL(OCTEON_CN50XX)) { - /* Tell PKO the number of ports on this interface */ - pko_mode.u64 = cvmx_read_csr(CVMX_PKO_REG_GMX_PORT_MODE); - if (interface == 0) { - if (num_ports == 1) - pko_mode.s.mode0 = 4; - else if (num_ports == 2) - pko_mode.s.mode0 = 3; - else if (num_ports <= 4) - pko_mode.s.mode0 = 2; - else if (num_ports <= 8) - pko_mode.s.mode0 = 1; - else - pko_mode.s.mode0 = 0; - } else { - if (num_ports == 1) - pko_mode.s.mode1 = 4; - else if (num_ports == 2) - pko_mode.s.mode1 = 3; - else if (num_ports <= 4) - pko_mode.s.mode1 = 2; - else if (num_ports <= 8) - pko_mode.s.mode1 = 1; - else - pko_mode.s.mode1 = 0; - } - cvmx_write_csr(CVMX_PKO_REG_GMX_PORT_MODE, pko_mode.u64); - } - - /* - * Set GMX to buffer as much data as possible before starting - * transmit. This reduces the chances that we have a TX under - * run due to memory contention. Any packet that fits entirely - * in the GMX FIFO can never have an under run regardless of - * memory load. - */ - gmx_tx_thresh.u64 = cvmx_read_csr(CVMX_GMXX_TXX_THRESH(0, interface)); - if (OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN31XX) - || OCTEON_IS_MODEL(OCTEON_CN50XX)) { - /* These chips have a fixed max threshold of 0x40 */ - gmx_tx_thresh.s.cnt = 0x40; - } else { - /* Choose the max value for the number of ports */ - if (num_ports <= 1) - gmx_tx_thresh.s.cnt = 0x100 / 1; - else if (num_ports == 2) - gmx_tx_thresh.s.cnt = 0x100 / 2; - else - gmx_tx_thresh.s.cnt = 0x100 / 4; - } - /* - * SPI and XAUI can have lots of ports but the GMX hardware - * only ever has a max of 4. - */ - if (num_ports > 4) - num_ports = 4; - for (index = 0; index < num_ports; index++) - cvmx_write_csr(CVMX_GMXX_TXX_THRESH(index, interface), - gmx_tx_thresh.u64); - - return 0; -} - -/** - * Returns the IPD/PKO port number for a port on the given - * interface. - * - * @interface: Interface to use - * @port: Port on the interface - * - * Returns IPD/PKO port number - */ -int cvmx_helper_get_ipd_port(int interface, int port) -{ - switch (interface) { - case 0: - return port; - case 1: - return port + 16; - case 2: - return port + 32; - case 3: - return port + 36; - } - return -1; -} - -/** - * Returns the interface number for an IPD/PKO port number. - * - * @ipd_port: IPD/PKO port number - * - * Returns Interface number - */ -int cvmx_helper_get_interface_num(int ipd_port) -{ - if (ipd_port < 16) - return 0; - else if (ipd_port < 32) - return 1; - else if (ipd_port < 36) - return 2; - else if (ipd_port < 40) - return 3; - else - cvmx_dprintf("cvmx_helper_get_interface_num: Illegal IPD " - "port number\n"); - - return -1; -} - -/** - * Returns the interface index number for an IPD/PKO port - * number. - * - * @ipd_port: IPD/PKO port number - * - * Returns Interface index number - */ -int cvmx_helper_get_interface_index_num(int ipd_port) -{ - if (ipd_port < 32) - return ipd_port & 15; - else if (ipd_port < 36) - return ipd_port & 3; - else if (ipd_port < 40) - return ipd_port & 3; - else - cvmx_dprintf("cvmx_helper_get_interface_index_num: " - "Illegal IPD port number\n"); - - return -1; -} |