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-rw-r--r--drivers/staging/octeon/cvmx-helper-util.c433
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
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--- a/drivers/staging/octeon/cvmx-helper-util.c
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@@ -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 teh 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;
-}
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