1 /* 2 * CDDL HEADER START 3 * 4 * Copyright(c) 2007-2009 Intel Corporation. All rights reserved. 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at: 10 * http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When using or redistributing this file, you may do so under the 15 * License only. No other modification of this header is permitted. 16 * 17 * If applicable, add the following below this CDDL HEADER, with the 18 * fields enclosed by brackets "[]" replaced with your own identifying 19 * information: Portions Copyright [yyyy] [name of copyright owner] 20 * 21 * CDDL HEADER END 22 */ 23 24 /* 25 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 * Copyright (c) 2017, Joyent, Inc. 28 */ 29 30 #include "ixgbe_sw.h" 31 32 uint16_t 33 ixgbe_read_pci_cfg(struct ixgbe_hw *hw, uint32_t reg) 34 { 35 return (pci_config_get16(OS_DEP(hw)->cfg_handle, reg)); 36 } 37 38 void 39 ixgbe_write_pci_cfg(struct ixgbe_hw *hw, uint32_t reg, uint32_t val) 40 { 41 pci_config_put16(OS_DEP(hw)->cfg_handle, reg, val); 42 } 43 44 /* 45 * This is our last line of defense against a hardware device that has decided 46 * to somehow disappear without our knowledge of it. To try and deal with this, 47 * we'll read the status register and see if it returns all 1s, indicating an 48 * invalid read. Note the status register is defined to have bits in all current 49 * revisions that are hardwired to zero. 50 */ 51 boolean_t 52 ixgbe_removed(struct ixgbe_hw *hw) 53 { 54 uint32_t val; 55 56 val = IXGBE_READ_REG(hw, IXGBE_STATUS); 57 if (val == PCI_EINVAL32) { 58 ixgbe_t *ixgbe = OS_DEP(hw)->ixgbe; 59 60 ixgbe_error(ixgbe, "failed to read status register: device " 61 "may be gone"); 62 if (ixgbe->ixgbe_ks != NULL) { 63 ixgbe_stat_t *s = ixgbe->ixgbe_ks->ks_data; 64 s->dev_gone.value.ui64++; 65 } 66 return (B_TRUE); 67 } 68 return (B_FALSE); 69 } 70