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 **/
i40e_diag_reg_pattern_test(struct i40e_hw * hw,u32 reg,u32 mask)13 static i40e_status 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 I40E_ERR_DIAG_TEST_FAILED;
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 I40E_ERR_DIAG_TEST_FAILED;
42 }
43
44 return 0;
45 }
46
47 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 **/
i40e_diag_reg_test(struct i40e_hw * hw)77 i40e_status i40e_diag_reg_test(struct i40e_hw *hw)
78 {
79 i40e_status ret_code = 0;
80 u32 reg, mask;
81 u32 i, j;
82
83 for (i = 0; i40e_reg_list[i].offset != 0 &&
84 !ret_code; i++) {
85
86 /* set actual reg range for dynamically allocated resources */
87 if (i40e_reg_list[i].offset == I40E_QTX_CTL(0) &&
88 hw->func_caps.num_tx_qp != 0)
89 i40e_reg_list[i].elements = hw->func_caps.num_tx_qp;
90 if ((i40e_reg_list[i].offset == I40E_PFINT_ITRN(0, 0) ||
91 i40e_reg_list[i].offset == I40E_PFINT_ITRN(1, 0) ||
92 i40e_reg_list[i].offset == I40E_PFINT_ITRN(2, 0) ||
93 i40e_reg_list[i].offset == I40E_QINT_TQCTL(0) ||
94 i40e_reg_list[i].offset == I40E_QINT_RQCTL(0)) &&
95 hw->func_caps.num_msix_vectors != 0)
96 i40e_reg_list[i].elements =
97 hw->func_caps.num_msix_vectors - 1;
98
99 /* test register access */
100 mask = i40e_reg_list[i].mask;
101 for (j = 0; j < i40e_reg_list[i].elements && !ret_code; j++) {
102 reg = i40e_reg_list[i].offset +
103 (j * i40e_reg_list[i].stride);
104 ret_code = i40e_diag_reg_pattern_test(hw, reg, mask);
105 }
106 }
107
108 return ret_code;
109 }
110
111 /**
112 * i40e_diag_eeprom_test
113 * @hw: pointer to the hw struct
114 *
115 * Perform EEPROM diagnostic test
116 **/
i40e_diag_eeprom_test(struct i40e_hw * hw)117 i40e_status i40e_diag_eeprom_test(struct i40e_hw *hw)
118 {
119 i40e_status ret_code;
120 u16 reg_val;
121
122 /* read NVM control word and if NVM valid, validate EEPROM checksum*/
123 ret_code = i40e_read_nvm_word(hw, I40E_SR_NVM_CONTROL_WORD, ®_val);
124 if (!ret_code &&
125 ((reg_val & I40E_SR_CONTROL_WORD_1_MASK) ==
126 BIT(I40E_SR_CONTROL_WORD_1_SHIFT)))
127 return i40e_validate_nvm_checksum(hw, NULL);
128 else
129 return I40E_ERR_DIAG_TEST_FAILED;
130 }
131