--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _IXGBE_BYPASS_API_H_
+#define _IXGBE_BYPASS_API_H_
+
+#ifdef RTE_NIC_BYPASS
+
+#include "ixgbe_bypass_defines.h"
+/**
+ * ixgbe_bypass_rw_generic - Bit bang data into by_pass FW
+ *
+ * @hw: pointer to hardware structure
+ * @cmd: Command we send to the FW
+ * @status: The reply from the FW
+ *
+ * Bit-bangs the cmd to the by_pass FW status points to what is returned.
+ **/
+#define IXGBE_BYPASS_BB_WAIT 1
+static s32 ixgbe_bypass_rw_generic(struct ixgbe_hw *hw, u32 cmd, u32 *status)
+{
+ int i;
+ u32 sck, sdi, sdo, dir_sck, dir_sdi, dir_sdo;
+ u32 esdp;
+
+ if (!status)
+ return IXGBE_ERR_PARAM;
+
+ *status = 0;
+
+ /* SDP vary by MAC type */
+ switch (hw->mac.type) {
+ case ixgbe_mac_82599EB:
+ sck = IXGBE_ESDP_SDP7;
+ sdi = IXGBE_ESDP_SDP0;
+ sdo = IXGBE_ESDP_SDP6;
+ dir_sck = IXGBE_ESDP_SDP7_DIR;
+ dir_sdi = IXGBE_ESDP_SDP0_DIR;
+ dir_sdo = IXGBE_ESDP_SDP6_DIR;
+ break;
+ case ixgbe_mac_X540:
+ sck = IXGBE_ESDP_SDP2;
+ sdi = IXGBE_ESDP_SDP0;
+ sdo = IXGBE_ESDP_SDP1;
+ dir_sck = IXGBE_ESDP_SDP2_DIR;
+ dir_sdi = IXGBE_ESDP_SDP0_DIR;
+ dir_sdo = IXGBE_ESDP_SDP1_DIR;
+ break;
+ case ixgbe_mac_X550:
+ case ixgbe_mac_X550EM_x:
+ case ixgbe_mac_X550EM_a:
+ sck = IXGBE_ESDP_SDP2;
+ sdi = IXGBE_ESDP_SDP0;
+ sdo = IXGBE_ESDP_SDP1;
+ dir_sck = IXGBE_ESDP_SDP2_DIR;
+ dir_sdi = IXGBE_ESDP_SDP0_DIR;
+ dir_sdo = IXGBE_ESDP_SDP1_DIR;
+ break;
+ default:
+ return IXGBE_ERR_DEVICE_NOT_SUPPORTED;
+ }
+
+ /* Set SDP pins direction */
+ esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
+ esdp |= dir_sck; /* SCK as output */
+ esdp |= dir_sdi; /* SDI as output */
+ esdp &= ~dir_sdo; /* SDO as input */
+ esdp |= sck;
+ esdp |= sdi;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ IXGBE_WRITE_FLUSH(hw);
+ // TODO:
+ msleep(IXGBE_BYPASS_BB_WAIT);
+
+ /* Generate start condition */
+ esdp &= ~sdi;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ IXGBE_WRITE_FLUSH(hw);
+ msleep(IXGBE_BYPASS_BB_WAIT);
+
+ esdp &= ~sck;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ IXGBE_WRITE_FLUSH(hw);
+ msleep(IXGBE_BYPASS_BB_WAIT);
+
+ /* Clock out the new control word and clock in the status */
+ for (i = 0; i < 32; i++) {
+ if ((cmd >> (31 - i)) & 0x01) {
+ esdp |= sdi;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ } else {
+ esdp &= ~sdi;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ }
+ IXGBE_WRITE_FLUSH(hw);
+ msleep(IXGBE_BYPASS_BB_WAIT);
+
+ esdp |= sck;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ IXGBE_WRITE_FLUSH(hw);
+ msleep(IXGBE_BYPASS_BB_WAIT);
+
+ esdp &= ~sck;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ IXGBE_WRITE_FLUSH(hw);
+ msleep(IXGBE_BYPASS_BB_WAIT);
+
+ esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
+ if (esdp & sdo)
+ *status = (*status << 1) | 0x01;
+ else
+ *status = (*status << 1) | 0x00;
+ msleep(IXGBE_BYPASS_BB_WAIT);
+ }
+
+ /* stop condition */
+ esdp |= sck;
+ esdp &= ~sdi;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ IXGBE_WRITE_FLUSH(hw);
+ msleep(IXGBE_BYPASS_BB_WAIT);
+
+ esdp |= sdi;
+ IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
+ IXGBE_WRITE_FLUSH(hw);
+
+ /* set the page bits to match the cmd that the status it belongs to */
+ *status = (*status & 0x3fffffff) | (cmd & 0xc0000000);
+
+ return 0;
+}
+
+/**
+ * ixgbe_bypass_valid_rd_generic - Verify valid return from bit-bang.
+ *
+ * If we send a write we can't be sure it took until we can read back
+ * that same register. It can be a problem as some of the feilds may
+ * for valid reasons change between the time wrote the register and
+ * we read it again to verify. So this function check everything we
+ * can check and then assumes it worked.
+ *
+ * @u32 in_reg - The register cmd for the bit-bang read.
+ * @u32 out_reg - The register returned from a bit-bang read.
+ **/
+static bool ixgbe_bypass_valid_rd_generic(u32 in_reg, u32 out_reg)
+{
+ u32 mask;
+
+ /* Page must match for all control pages */
+ if ((in_reg & BYPASS_PAGE_M) != (out_reg & BYPASS_PAGE_M))
+ return false;
+
+ switch (in_reg & BYPASS_PAGE_M) {
+ case BYPASS_PAGE_CTL0:
+ /* All the following can't change since the last write
+ * - All the event actions
+ * - The timeout value
+ */
+ mask = BYPASS_AUX_ON_M | BYPASS_MAIN_ON_M |
+ BYPASS_MAIN_OFF_M | BYPASS_AUX_OFF_M |
+ BYPASS_WDTIMEOUT_M |
+ BYPASS_WDT_VALUE_M;
+ if ((out_reg & mask) != (in_reg & mask))
+ return false;
+
+ /* 0x0 is never a valid value for bypass status */
+ if (!(out_reg & BYPASS_STATUS_OFF_M))
+ return false;
+ break;
+ case BYPASS_PAGE_CTL1:
+ /* All the following can't change since the last write
+ * - time valid bit
+ * - time we last sent
+ */
+ mask = BYPASS_CTL1_VALID_M | BYPASS_CTL1_TIME_M;
+ if ((out_reg & mask) != (in_reg & mask))
+ return false;
+ break;
+ case BYPASS_PAGE_CTL2:
+ /* All we can check in this page is control number
+ * which is already done above.
+ */
+ break;
+ }
+
+ /* We are as sure as we can be return true */
+ return true;
+}
+
+/**
+ * ixgbe_bypass_set_generic - Set a bypass field in the FW CTRL Regiter.
+ *
+ * @hw: pointer to hardware structure
+ * @cmd: The control word we are setting.
+ * @event: The event we are setting in the FW. This also happens to
+ * be the mask for the event we are setting (handy)
+ * @action: The action we set the event to in the FW. This is in a
+ * bit field that happens to be what we want to put in
+ * the event spot (also handy)
+ **/
+static s32 ixgbe_bypass_set_generic(struct ixgbe_hw *hw, u32 ctrl, u32 event,
+ u32 action)
+{
+ u32 by_ctl = 0;
+ u32 cmd, verify;
+ u32 count = 0;
+
+ /* Get current values */
+ cmd = ctrl; /* just reading only need control number */
+ if (ixgbe_bypass_rw_generic(hw, cmd, &by_ctl))
+ return IXGBE_ERR_INVALID_ARGUMENT;
+
+ /* Set to new action */
+ cmd = (by_ctl & ~event) | BYPASS_WE | action;
+ if (ixgbe_bypass_rw_generic(hw, cmd, &by_ctl))
+ return IXGBE_ERR_INVALID_ARGUMENT;
+
+ /* Page 0 force a FW eeprom write which is slow so verify */
+ if ((cmd & BYPASS_PAGE_M) == BYPASS_PAGE_CTL0) {
+ verify = BYPASS_PAGE_CTL0;
+ do {
+ if (count++ > 5)
+ return IXGBE_BYPASS_FW_WRITE_FAILURE;
+
+ if (ixgbe_bypass_rw_generic(hw, verify, &by_ctl))
+ return IXGBE_ERR_INVALID_ARGUMENT;
+ } while (!ixgbe_bypass_valid_rd_generic(cmd, by_ctl));
+ } else {
+ /* We have give the FW time for the write to stick */
+ msleep(100);
+ }
+
+ return 0;
+}
+
+/**
+ * ixgbe_bypass_rd_eep_generic - Read the bypass FW eeprom address.
+ *
+ * @hw: pointer to hardware structure
+ * @addr: The bypass eeprom address to read.
+ * @value: The 8b of data at the address above.
+ **/
+static s32 ixgbe_bypass_rd_eep_generic(struct ixgbe_hw *hw, u32 addr, u8 *value)
+{
+ u32 cmd;
+ u32 status;
+
+
+ /* send the request */
+ cmd = BYPASS_PAGE_CTL2 | BYPASS_WE;
+ cmd |= (addr << BYPASS_CTL2_OFFSET_SHIFT) & BYPASS_CTL2_OFFSET_M;
+ if (ixgbe_bypass_rw_generic(hw, cmd, &status))
+ return IXGBE_ERR_INVALID_ARGUMENT;
+
+ /* We have give the FW time for the write to stick */
+ msleep(100);
+
+ /* now read the results */
+ cmd &= ~BYPASS_WE;
+ if (ixgbe_bypass_rw_generic(hw, cmd, &status))
+ return IXGBE_ERR_INVALID_ARGUMENT;
+
+ *value = status & BYPASS_CTL2_DATA_M;
+
+ return 0;
+}
+
+#endif /* RTE_NIC_BYPASS */
+
+#endif /* _IXGBE_BYPASS_API_H_ */
Code Review / deb_dpdk.git / blobdiff