1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4#include "i40e_diag.h"
5#include "i40e_prototype.h"
6
7/**
8 * i40e_diag_reg_pattern_test
9 * @hw: pointer to the hw struct
10 * @reg: reg to be tested
11 * @mask: bits to be touched
12 **/
13static int i40e_diag_reg_pattern_test(struct i40e_hw *hw,
14 u32 reg, u32 mask)
15{
16 static const u32 patterns[] = {
17 0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
18 };
19 u32 pat, val, orig_val;
20 int i;
21
22 orig_val = rd32(hw, reg);
23 for (i = 0; i < ARRAY_SIZE(patterns); i++) {
24 pat = patterns[i];
25 wr32(hw, reg, (pat & mask));
26 val = rd32(hw, reg);
27 if ((val & mask) != (pat & mask)) {
28 i40e_debug(hw, I40E_DEBUG_DIAG,
29 "%s: reg pattern test failed - reg 0x%08x pat 0x%08x val 0x%08x\n",
30 __func__, reg, pat, val);
31 return -EIO;
32 }
33 }
34
35 wr32(hw, reg, orig_val);
36 val = rd32(hw, reg);
37 if (val != orig_val) {
38 i40e_debug(hw, I40E_DEBUG_DIAG,
39 "%s: reg restore test failed - reg 0x%08x orig_val 0x%08x val 0x%08x\n",
40 __func__, reg, orig_val, val);
41 return -EIO;
42 }
43
44 return 0;
45}
46
47const struct i40e_diag_reg_test_info i40e_reg_list[] = {
48 /* offset mask elements stride */
49 {I40E_QTX_CTL(0), 0x0000FFBF, 1,
50 I40E_QTX_CTL(1) - I40E_QTX_CTL(0)},
51 {I40E_PFINT_ITR0(0), 0x00000FFF, 3,
52 I40E_PFINT_ITR0(1) - I40E_PFINT_ITR0(0)},
53 {I40E_PFINT_ITRN(0, 0), 0x00000FFF, 1,
54 I40E_PFINT_ITRN(0, 1) - I40E_PFINT_ITRN(0, 0)},
55 {I40E_PFINT_ITRN(1, 0), 0x00000FFF, 1,
56 I40E_PFINT_ITRN(1, 1) - I40E_PFINT_ITRN(1, 0)},
57 {I40E_PFINT_ITRN(2, 0), 0x00000FFF, 1,
58 I40E_PFINT_ITRN(2, 1) - I40E_PFINT_ITRN(2, 0)},
59 {I40E_PFINT_STAT_CTL0, 0x0000000C, 1, 0},
60 {I40E_PFINT_LNKLST0, 0x00001FFF, 1, 0},
61 {I40E_PFINT_LNKLSTN(0), 0x000007FF, 1,
62 I40E_PFINT_LNKLSTN(1) - I40E_PFINT_LNKLSTN(0)},
63 {I40E_QINT_TQCTL(0), 0x000000FF, 1,
64 I40E_QINT_TQCTL(1) - I40E_QINT_TQCTL(0)},
65 {I40E_QINT_RQCTL(0), 0x000000FF, 1,
66 I40E_QINT_RQCTL(1) - I40E_QINT_RQCTL(0)},
67 {I40E_PFINT_ICR0_ENA, 0xF7F20000, 1, 0},
68 { 0 }
69};
70
71/**
72 * i40e_diag_reg_test
73 * @hw: pointer to the hw struct
74 *
75 * Perform registers diagnostic test
76 **/
77int i40e_diag_reg_test(struct i40e_hw *hw)
78{
79 int ret_code = 0;
80 u32 reg, mask;
81 u32 elements;
82 u32 i, j;
83
84 for (i = 0; i40e_reg_list[i].offset != 0 &&
85 !ret_code; i++) {
86
87 elements = i40e_reg_list[i].elements;
88 /* set actual reg range for dynamically allocated resources */
89 if (i40e_reg_list[i].offset == I40E_QTX_CTL(0) &&
90 hw->func_caps.num_tx_qp != 0)
91 elements = hw->func_caps.num_tx_qp;
92 if ((i40e_reg_list[i].offset == I40E_PFINT_ITRN(0, 0) ||
93 i40e_reg_list[i].offset == I40E_PFINT_ITRN(1, 0) ||
94 i40e_reg_list[i].offset == I40E_PFINT_ITRN(2, 0) ||
95 i40e_reg_list[i].offset == I40E_QINT_TQCTL(0) ||
96 i40e_reg_list[i].offset == I40E_QINT_RQCTL(0)) &&
97 hw->func_caps.num_msix_vectors != 0)
98 elements = hw->func_caps.num_msix_vectors - 1;
99
100 /* test register access */
101 mask = i40e_reg_list[i].mask;
102 for (j = 0; j < elements && !ret_code; j++) {
103 reg = i40e_reg_list[i].offset +
104 (j * i40e_reg_list[i].stride);
105 ret_code = i40e_diag_reg_pattern_test(hw, reg, mask);
106 }
107 }
108
109 return ret_code;
110}
111
112/**
113 * i40e_diag_eeprom_test
114 * @hw: pointer to the hw struct
115 *
116 * Perform EEPROM diagnostic test
117 **/
118int i40e_diag_eeprom_test(struct i40e_hw *hw)
119{
120 int ret_code;
121 u16 reg_val;
122
123 /* read NVM control word and if NVM valid, validate EEPROM checksum*/
124 ret_code = i40e_read_nvm_word(hw, I40E_SR_NVM_CONTROL_WORD, data: &reg_val);
125 if (!ret_code &&
126 ((reg_val & I40E_SR_CONTROL_WORD_1_MASK) ==
127 BIT(I40E_SR_CONTROL_WORD_1_SHIFT)))
128 return i40e_validate_nvm_checksum(hw, NULL);
129 else
130 return -EIO;
131}
132

source code of linux/drivers/net/ethernet/intel/i40e/i40e_diag.c