1 | /* Copyright 2008 - 2015 Freescale Semiconductor, Inc. |
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2 | * |
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3 | * Redistribution and use in source and binary forms, with or without |
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4 | * modification, are permitted provided that the following conditions are met: |
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5 | * * Redistributions of source code must retain the above copyright |
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6 | * notice, this list of conditions and the following disclaimer. |
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7 | * * Redistributions in binary form must reproduce the above copyright |
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8 | * notice, this list of conditions and the following disclaimer in the |
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9 | * documentation and/or other materials provided with the distribution. |
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10 | * * Neither the name of Freescale Semiconductor nor the |
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11 | * names of its contributors may be used to endorse or promote products |
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12 | * derived from this software without specific prior written permission. |
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13 | * |
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14 | * ALTERNATIVELY, this software may be distributed under the terms of the |
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15 | * GNU General Public License ("GPL") as published by the Free Software |
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16 | * Foundation, either version 2 of that License or (at your option) any |
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17 | * later version. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
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20 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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21 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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22 | * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
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23 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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24 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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25 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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26 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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28 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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29 | */ |
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30 | |
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31 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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32 | |
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33 | #include "dpaa_sys.h" |
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34 | |
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35 | #include <soc/fsl/qman.h> |
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36 | #include <linux/iommu.h> |
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37 | #include <asm/fsl_pamu_stash.h> |
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38 | |
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39 | /* Congestion Groups */ |
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40 | |
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41 | /* This wrapper represents a bit-array for the state of the 256 QMan congestion |
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42 | * groups. Is also used as a *mask* for congestion groups, eg. so we ignore |
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43 | * those that don't concern us. We harness the structure and accessor details |
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44 | * already used in the management command to query congestion groups. |
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45 | */ |
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46 | struct qman_cgrs { |
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47 | struct __qm_mcr_querycongestion q; |
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48 | }; |
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49 | static inline void qman_cgrs_init(struct qman_cgrs *c) |
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50 | { |
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51 | memset(c, 0, sizeof(*c)); |
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52 | } |
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53 | static inline void qman_cgrs_fill(struct qman_cgrs *c) |
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54 | { |
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55 | memset(c, 0xff, sizeof(*c)); |
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56 | } |
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57 | static inline int qman_cgrs_get(struct qman_cgrs *c, int num) |
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58 | { |
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59 | return QM_MCR_QUERYCONGESTION(&c->q, num); |
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60 | } |
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61 | static inline void qman_cgrs_set(struct qman_cgrs *c, int num) |
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62 | { |
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63 | c->q.__state[__CGR_WORD(num)] |= (0x80000000 >> __CGR_SHIFT(num)); |
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64 | } |
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65 | static inline void qman_cgrs_unset(struct qman_cgrs *c, int num) |
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66 | { |
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67 | c->q.__state[__CGR_WORD(num)] &= ~(0x80000000 >> __CGR_SHIFT(num)); |
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68 | } |
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69 | static inline int qman_cgrs_next(struct qman_cgrs *c, int num) |
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70 | { |
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71 | while ((++num < __CGR_NUM) && !qman_cgrs_get(c, num)) |
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72 | ; |
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73 | return num; |
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74 | } |
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75 | static inline void qman_cgrs_cp(struct qman_cgrs *dest, |
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76 | const struct qman_cgrs *src) |
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77 | { |
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78 | *dest = *src; |
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79 | } |
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80 | static inline void qman_cgrs_and(struct qman_cgrs *dest, |
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81 | const struct qman_cgrs *a, const struct qman_cgrs *b) |
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82 | { |
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83 | int ret; |
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84 | u32 *_d = dest->q.__state; |
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85 | const u32 *_a = a->q.__state; |
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86 | const u32 *_b = b->q.__state; |
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87 | |
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88 | for (ret = 0; ret < 8; ret++) |
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89 | *(_d++) = *(_a++) & *(_b++); |
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90 | } |
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91 | static inline void qman_cgrs_xor(struct qman_cgrs *dest, |
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92 | const struct qman_cgrs *a, const struct qman_cgrs *b) |
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93 | { |
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94 | int ret; |
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95 | u32 *_d = dest->q.__state; |
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96 | const u32 *_a = a->q.__state; |
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97 | const u32 *_b = b->q.__state; |
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98 | |
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99 | for (ret = 0; ret < 8; ret++) |
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100 | *(_d++) = *(_a++) ^ *(_b++); |
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101 | } |
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102 | |
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103 | /* used by CCSR and portal interrupt code */ |
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104 | enum qm_isr_reg { |
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105 | qm_isr_status = 0, |
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106 | qm_isr_enable = 1, |
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107 | qm_isr_disable = 2, |
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108 | qm_isr_inhibit = 3 |
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109 | }; |
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110 | |
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111 | struct qm_portal_config { |
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112 | /* Corenet portal addresses; |
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113 | * [0]==cache-enabled, [1]==cache-inhibited. */ |
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114 | __iomem void *addr_virt[2]; |
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115 | #ifndef __rtems__ |
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116 | struct resource addr_phys[2]; |
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117 | struct device dev; |
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118 | struct iommu_domain *iommu_domain; |
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119 | /* Allow these to be joined in lists */ |
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120 | struct list_head list; |
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121 | #endif /* __rtems__ */ |
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122 | /* User-visible portal configuration settings */ |
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123 | struct qman_portal_config public_cfg; |
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124 | }; |
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125 | |
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126 | /* Revision info (for errata and feature handling) */ |
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127 | #define QMAN_REV11 0x0101 |
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128 | #define QMAN_REV12 0x0102 |
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129 | #define QMAN_REV20 0x0200 |
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130 | #define QMAN_REV30 0x0300 |
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131 | #define QMAN_REV31 0x0301 |
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132 | extern u16 qman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */ |
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133 | |
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134 | extern u16 qman_portal_max; |
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135 | |
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136 | #ifdef CONFIG_FSL_QMAN_CONFIG |
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137 | /* Hooks from qman_driver.c to qman_config.c */ |
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138 | int qman_init_ccsr(struct device_node *node); |
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139 | void qman_liodn_fixup(u16 channel); |
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140 | int qman_set_sdest(u16 channel, unsigned int cpu_idx); |
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141 | size_t qman_fqd_size(void); |
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142 | #endif |
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143 | |
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144 | int qm_set_wpm(int wpm); |
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145 | int qm_get_wpm(int *wpm); |
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146 | |
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147 | /* Hooks from qman_driver.c in to qman_high.c */ |
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148 | struct qman_portal *qman_create_portal( |
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149 | struct qman_portal *portal, |
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150 | const struct qm_portal_config *config, |
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151 | const struct qman_cgrs *cgrs); |
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152 | |
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153 | struct qman_portal *qman_create_affine_portal( |
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154 | const struct qm_portal_config *config, |
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155 | const struct qman_cgrs *cgrs); |
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156 | struct qman_portal *qman_create_affine_slave(struct qman_portal *redirect, |
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157 | int cpu); |
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158 | const struct qm_portal_config *qman_destroy_affine_portal(void); |
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159 | void qman_destroy_portal(struct qman_portal *qm); |
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160 | |
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161 | /* This CGR feature is supported by h/w and required by unit-tests and the |
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162 | * debugfs hooks, so is implemented in the driver. However it allows an explicit |
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163 | * corruption of h/w fields by s/w that are usually incorruptible (because the |
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164 | * counters are usually maintained entirely within h/w). As such, we declare |
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165 | * this API internally. */ |
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166 | int qman_testwrite_cgr(struct qman_cgr *cgr, u64 i_bcnt, |
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167 | struct qm_mcr_cgrtestwrite *result); |
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168 | |
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169 | #ifdef CONFIG_FSL_QMAN_FQ_LOOKUP |
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170 | /* If the fq object pointer is greater than the size of context_b field, |
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171 | * than a lookup table is required. */ |
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172 | int qman_setup_fq_lookup_table(size_t num_entries); |
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173 | #endif |
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174 | |
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175 | |
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176 | /*************************************************/ |
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177 | /* QMan s/w corenet portal, low-level i/face */ |
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178 | /*************************************************/ |
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179 | |
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180 | /* Note: most functions are only used by the high-level interface, so are |
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181 | * inlined from qman.h. The stuff below is for use by other parts of the |
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182 | * driver. */ |
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183 | |
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184 | /* For qm_dqrr_sdqcr_set(); Choose one SOURCE. Choose one COUNT. Choose one |
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185 | * dequeue TYPE. Choose TOKEN (8-bit). |
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186 | * If SOURCE == CHANNELS, |
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187 | * Choose CHANNELS_DEDICATED and/or CHANNELS_POOL(n). |
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188 | * You can choose DEDICATED_PRECEDENCE if the portal channel should have |
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189 | * priority. |
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190 | * If SOURCE == SPECIFICWQ, |
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191 | * Either select the work-queue ID with SPECIFICWQ_WQ(), or select the |
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192 | * channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the |
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193 | * work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the |
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194 | * same value. |
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195 | */ |
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196 | #define QM_SDQCR_SOURCE_CHANNELS 0x0 |
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197 | #define QM_SDQCR_SOURCE_SPECIFICWQ 0x40000000 |
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198 | #define QM_SDQCR_COUNT_EXACT1 0x0 |
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199 | #define QM_SDQCR_COUNT_UPTO3 0x20000000 |
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200 | #define QM_SDQCR_DEDICATED_PRECEDENCE 0x10000000 |
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201 | #define QM_SDQCR_TYPE_MASK 0x03000000 |
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202 | #define QM_SDQCR_TYPE_NULL 0x0 |
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203 | #define QM_SDQCR_TYPE_PRIO_QOS 0x01000000 |
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204 | #define QM_SDQCR_TYPE_ACTIVE_QOS 0x02000000 |
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205 | #define QM_SDQCR_TYPE_ACTIVE 0x03000000 |
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206 | #define QM_SDQCR_TOKEN_MASK 0x00ff0000 |
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207 | #define QM_SDQCR_TOKEN_SET(v) (((v) & 0xff) << 16) |
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208 | #define QM_SDQCR_TOKEN_GET(v) (((v) >> 16) & 0xff) |
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209 | #define QM_SDQCR_CHANNELS_DEDICATED 0x00008000 |
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210 | #define QM_SDQCR_SPECIFICWQ_MASK 0x000000f7 |
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211 | #define QM_SDQCR_SPECIFICWQ_DEDICATED 0x00000000 |
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212 | #define QM_SDQCR_SPECIFICWQ_POOL(n) ((n) << 4) |
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213 | #define QM_SDQCR_SPECIFICWQ_WQ(n) (n) |
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214 | |
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215 | /* For qm_dqrr_vdqcr_set(): use FQID(n) to fill in the frame queue ID */ |
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216 | #define QM_VDQCR_FQID_MASK 0x00ffffff |
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217 | #define QM_VDQCR_FQID(n) ((n) & QM_VDQCR_FQID_MASK) |
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218 | |
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219 | /* For qm_dqrr_pdqcr_set(); Choose one MODE. Choose one COUNT. |
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220 | * If MODE==SCHEDULED |
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221 | * Choose SCHEDULED_CHANNELS or SCHEDULED_SPECIFICWQ. Choose one dequeue TYPE. |
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222 | * If CHANNELS, |
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223 | * Choose CHANNELS_DEDICATED and/or CHANNELS_POOL() channels. |
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224 | * You can choose DEDICATED_PRECEDENCE if the portal channel should have |
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225 | * priority. |
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226 | * If SPECIFICWQ, |
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227 | * Either select the work-queue ID with SPECIFICWQ_WQ(), or select the |
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228 | * channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the |
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229 | * work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the |
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230 | * same value. |
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231 | * If MODE==UNSCHEDULED |
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232 | * Choose FQID(). |
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233 | */ |
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234 | #define QM_PDQCR_MODE_SCHEDULED 0x0 |
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235 | #define QM_PDQCR_MODE_UNSCHEDULED 0x80000000 |
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236 | #define QM_PDQCR_SCHEDULED_CHANNELS 0x0 |
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237 | #define QM_PDQCR_SCHEDULED_SPECIFICWQ 0x40000000 |
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238 | #define QM_PDQCR_COUNT_EXACT1 0x0 |
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239 | #define QM_PDQCR_COUNT_UPTO3 0x20000000 |
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240 | #define QM_PDQCR_DEDICATED_PRECEDENCE 0x10000000 |
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241 | #define QM_PDQCR_TYPE_MASK 0x03000000 |
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242 | #define QM_PDQCR_TYPE_NULL 0x0 |
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243 | #define QM_PDQCR_TYPE_PRIO_QOS 0x01000000 |
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244 | #define QM_PDQCR_TYPE_ACTIVE_QOS 0x02000000 |
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245 | #define QM_PDQCR_TYPE_ACTIVE 0x03000000 |
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246 | #define QM_PDQCR_CHANNELS_DEDICATED 0x00008000 |
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247 | #define QM_PDQCR_CHANNELS_POOL(n) (0x00008000 >> (n)) |
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248 | #define QM_PDQCR_SPECIFICWQ_MASK 0x000000f7 |
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249 | #define QM_PDQCR_SPECIFICWQ_DEDICATED 0x00000000 |
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250 | #define QM_PDQCR_SPECIFICWQ_POOL(n) ((n) << 4) |
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251 | #define QM_PDQCR_SPECIFICWQ_WQ(n) (n) |
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252 | #define QM_PDQCR_FQID(n) ((n) & 0xffffff) |
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253 | |
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254 | /* Used by all portal interrupt registers except 'inhibit' |
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255 | * Channels with frame availability |
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256 | */ |
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257 | #define QM_PIRQ_DQAVAIL 0x0000ffff |
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258 | |
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259 | /* The DQAVAIL interrupt fields break down into these bits; */ |
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260 | #define QM_DQAVAIL_PORTAL 0x8000 /* Portal channel */ |
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261 | #define QM_DQAVAIL_POOL(n) (0x8000 >> (n)) /* Pool channel, n==[1..15] */ |
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262 | #define QM_DQAVAIL_MASK 0xffff |
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263 | /* This mask contains all the "irqsource" bits visible to API users */ |
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264 | #define QM_PIRQ_VISIBLE (QM_PIRQ_SLOW | QM_PIRQ_DQRI) |
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265 | |
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266 | /* These are qm_<reg>_<verb>(). So for example, qm_disable_write() means "write |
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267 | * the disable register" rather than "disable the ability to write". */ |
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268 | #define qm_isr_status_read(qm) __qm_isr_read(qm, qm_isr_status) |
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269 | #define qm_isr_status_clear(qm, m) __qm_isr_write(qm, qm_isr_status, m) |
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270 | #define qm_isr_enable_read(qm) __qm_isr_read(qm, qm_isr_enable) |
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271 | #define qm_isr_enable_write(qm, v) __qm_isr_write(qm, qm_isr_enable, v) |
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272 | #define qm_isr_disable_read(qm) __qm_isr_read(qm, qm_isr_disable) |
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273 | #define qm_isr_disable_write(qm, v) __qm_isr_write(qm, qm_isr_disable, v) |
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274 | /* TODO: unfortunate name-clash here, reword? */ |
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275 | #define qm_isr_inhibit(qm) __qm_isr_write(qm, qm_isr_inhibit, 1) |
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276 | #define qm_isr_uninhibit(qm) __qm_isr_write(qm, qm_isr_inhibit, 0) |
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277 | |
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278 | #ifdef CONFIG_FSL_QMAN_CONFIG |
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279 | int qman_have_ccsr(void); |
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280 | #else |
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281 | #define qman_have_ccsr 0 |
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282 | #endif |
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283 | |
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284 | #ifndef __rtems__ |
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285 | __init int qman_init(void); |
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286 | #else /* __rtems__ */ |
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287 | int qman_init(struct device_node *dn); |
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288 | #endif /* __rtems__ */ |
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289 | __init int qman_resource_init(void); |
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290 | |
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291 | extern void *affine_portals[NR_CPUS]; |
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292 | const struct qm_portal_config *qman_get_qm_portal_config( |
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293 | struct qman_portal *portal); |
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