[3bb4122] | 1 | /* SPWCUC - SpaceWire - CCSDS unsegmented Code Transfer Protocol GRLIB core |
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| 2 | * register driver interface. |
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| 3 | * |
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| 4 | * COPYRIGHT (c) 2009. |
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| 5 | * Cobham Gaisler AB. |
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| 6 | * |
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| 7 | * The license and distribution terms for this file may be |
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| 8 | * found in the file LICENSE in this distribution or at |
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[4a7d1026] | 9 | * http://www.rtems.org/license/LICENSE. |
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[3bb4122] | 10 | */ |
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| 11 | |
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| 12 | #include <drvmgr/drvmgr.h> |
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| 13 | #include <drvmgr/ambapp_bus.h> |
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| 14 | #include <stdlib.h> |
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| 15 | |
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[5823bae8] | 16 | #include <bsp/spwcuc.h> |
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[3bb4122] | 17 | |
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| 18 | /* Private structure of SPWCUC driver. */ |
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| 19 | struct spwcuc_priv { |
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| 20 | struct drvmgr_dev *dev; |
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| 21 | struct spwcuc_regs *regs; |
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| 22 | int open; |
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| 23 | |
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| 24 | spwcuc_isr_t user_isr; |
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| 25 | void *user_isr_arg; |
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| 26 | |
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| 27 | struct spwcuc_stats stats; |
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| 28 | }; |
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| 29 | |
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| 30 | void spwcuc_isr(void *data); |
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| 31 | |
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| 32 | struct amba_drv_info spwcuc_drv_info; |
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| 33 | |
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| 34 | /* Hardware Reset of SPWCUC */ |
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[126b25d] | 35 | static int spwcuc_hw_reset(struct spwcuc_priv *priv) |
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[3bb4122] | 36 | { |
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| 37 | struct spwcuc_regs *r = priv->regs; |
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| 38 | int i = 1000; |
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| 39 | |
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| 40 | r->control = 1; |
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| 41 | |
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| 42 | while ((r->control & 1) && i > 0) { |
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| 43 | i--; |
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| 44 | } |
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| 45 | |
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| 46 | spwcuc_clear_irqs(priv, -1); |
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| 47 | |
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| 48 | return i ? 0 : -1; |
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| 49 | } |
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| 50 | |
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| 51 | int spwcuc_reset(void *spwcuc) |
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| 52 | { |
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| 53 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 54 | |
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| 55 | return spwcuc_hw_reset(priv); |
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| 56 | } |
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| 57 | |
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| 58 | void *spwcuc_open(int minor) |
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| 59 | { |
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| 60 | struct spwcuc_priv *priv; |
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| 61 | struct drvmgr_dev *dev; |
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| 62 | |
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| 63 | /* Get Device from Minor */ |
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| 64 | if ( drvmgr_get_dev(&spwcuc_drv_info.general, minor, &dev) ) { |
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| 65 | return NULL; |
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| 66 | } |
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| 67 | |
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| 68 | priv = dev->priv; |
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| 69 | if ( (priv == NULL) || priv->open ) |
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| 70 | return NULL; |
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| 71 | |
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| 72 | /* Set initial state of software */ |
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| 73 | priv->open = 1; |
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| 74 | |
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| 75 | /* Clear Statistics */ |
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| 76 | spwcuc_clr_stats(priv); |
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| 77 | priv->user_isr = NULL; |
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| 78 | priv->user_isr_arg = NULL; |
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| 79 | |
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| 80 | return priv; |
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| 81 | } |
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| 82 | |
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| 83 | void spwcuc_close(void *spwcuc) |
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| 84 | { |
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| 85 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 86 | |
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| 87 | if ( priv->open == 0 ) |
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| 88 | return; |
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| 89 | |
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| 90 | /* Reset Hardware */ |
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| 91 | spwcuc_hw_reset(priv); |
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| 92 | |
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| 93 | priv->open = 0; |
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| 94 | } |
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| 95 | |
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| 96 | void spwcuc_int_enable(void *spwcuc) |
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| 97 | { |
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| 98 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 99 | |
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| 100 | /* Register and Enable Interrupt at Interrupt controller */ |
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| 101 | drvmgr_interrupt_register(priv->dev, 0, "spwcuc", spwcuc_isr, priv); |
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| 102 | } |
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| 103 | |
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| 104 | void spwcuc_int_disable(void *spwcuc) |
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| 105 | { |
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| 106 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 107 | |
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| 108 | /* Enable Interrupt at Interrupt controller */ |
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| 109 | drvmgr_interrupt_unregister(priv->dev, 0, spwcuc_isr, priv); |
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| 110 | } |
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| 111 | |
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| 112 | void spwcuc_clr_stats(void *spwcuc) |
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| 113 | { |
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| 114 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 115 | |
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| 116 | memset(&priv->stats, 0, sizeof(priv->stats)); |
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| 117 | } |
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| 118 | |
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| 119 | void spwcuc_get_stats(void *spwcuc, struct spwcuc_stats *stats) |
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| 120 | { |
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| 121 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 122 | |
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| 123 | memcpy(stats, &priv->stats, sizeof(priv->stats)); |
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| 124 | } |
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| 125 | |
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| 126 | /* Configure the spwcuc core */ |
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| 127 | void spwcuc_config(void *spwcuc, struct spwcuc_cfg *cfg) |
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| 128 | { |
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| 129 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 130 | struct spwcuc_regs *r = priv->regs; |
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| 131 | |
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| 132 | r->config = (cfg->sel_out & 0x1f) << 28 | |
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| 133 | (cfg->sel_in & 0x1f) << 24 | |
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| 134 | (cfg->mapping & 0x1f) << 16 | |
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| 135 | (cfg->tolerance & 0x1f) << 8 | |
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| 136 | (cfg->tid & 0x7) << 4 | |
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| 137 | (cfg->ctf & 1) << 1 | |
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| 138 | (cfg->cp & 1); |
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| 139 | |
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| 140 | r->control = (cfg->txen & 1) << 1 | |
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| 141 | (cfg->rxen & 1) << 2 | |
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| 142 | (cfg->pktsyncen & 1) << 3 | |
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| 143 | (cfg->pktiniten & 1) << 4 | |
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| 144 | (cfg->pktrxen & 1) << 5; |
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| 145 | |
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| 146 | r->dla = (cfg->dla_mask & 0xff)<<8 | (cfg->dla & 0xff); |
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| 147 | |
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| 148 | r->pid = cfg->pid; |
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| 149 | |
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| 150 | r->offset = cfg->offset; |
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| 151 | } |
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| 152 | |
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| 153 | /* Return elapsed coarse time */ |
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| 154 | unsigned int spwcuc_get_et_coarse(void *spwcuc) |
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| 155 | { |
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| 156 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 157 | |
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| 158 | return priv->regs->etct; |
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| 159 | } |
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| 160 | |
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| 161 | /* Return elapsed fine time */ |
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| 162 | unsigned int spwcuc_get_et_fine(void *spwcuc) |
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| 163 | { |
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| 164 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 165 | |
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| 166 | return (priv->regs->etft & 0xffffff) >> 8; |
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| 167 | } |
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| 168 | |
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| 169 | /* Return elapsed time (coarse and fine) */ |
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| 170 | unsigned long long spwcuc_get_et(void *spwcuc) |
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| 171 | { |
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| 172 | return (((unsigned long long)spwcuc_get_et_coarse(spwcuc)) << 24) | spwcuc_get_et_fine(spwcuc); |
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| 173 | } |
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| 174 | |
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| 175 | /* Return next elapsed coarse time (for use when sending SpW time packet) */ |
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| 176 | unsigned int spwcuc_get_next_et_coarse(void *spwcuc) |
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| 177 | { |
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| 178 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 179 | |
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| 180 | return priv->regs->etct_next; |
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| 181 | } |
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| 182 | |
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| 183 | /* Return next elapsed fine time (for use when sending SpW time packet) */ |
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| 184 | unsigned int spwcuc_get_next_et_fine(void *spwcuc) |
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| 185 | { |
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| 186 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 187 | |
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| 188 | return (priv->regs->etft_next & 0xffffff) >> 8; |
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| 189 | } |
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| 190 | |
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| 191 | /* Return next elapsed time (for use when sending SpW time packet) */ |
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| 192 | unsigned long long spwcuc_get_next_et(void *spwcuc) |
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| 193 | { |
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| 194 | return (((unsigned long long)spwcuc_get_next_et_coarse(spwcuc)) << 24) | spwcuc_get_next_et_fine(spwcuc); |
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| 195 | } |
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| 196 | |
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| 197 | /* Force/Set the elapsed time (coarse 32-bit and fine 24-bit) by writing the |
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| 198 | * T-Field Time Packet Registers then the FORCE, NEW and INIT bits. |
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| 199 | * The latter three are needed for the ET to be set with the new value. |
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| 200 | */ |
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| 201 | void spwcuc_force_et(void *spwcuc, unsigned long long time) |
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| 202 | { |
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| 203 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 204 | struct spwcuc_regs *regs = priv->regs; |
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| 205 | |
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| 206 | regs->etft_next = (time & 0xffffff) << 8; |
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| 207 | regs->etct_next = (time >> 24) & 0xffffffff; |
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| 208 | regs->pkt_pf_crc = (1 << 29) | (1 << 30) | (1 << 31); |
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| 209 | } |
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| 210 | |
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| 211 | /* Return received (from time packet) elapsed coarse time */ |
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| 212 | unsigned int spwcuc_get_tp_et_coarse(void *spwcuc) |
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| 213 | { |
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| 214 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 215 | |
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| 216 | return priv->regs->pkt_ct; |
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| 217 | } |
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| 218 | |
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| 219 | /* Return received (from time packet) elapsed fine time */ |
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| 220 | unsigned int spwcuc_get_tp_et_fine(void *spwcuc) |
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| 221 | { |
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| 222 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 223 | |
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| 224 | return (priv->regs->pkt_ft & 0xffffff) >> 8; |
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| 225 | } |
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| 226 | |
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| 227 | /* Return received (from time packet) elapsed time (coarse and fine) */ |
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| 228 | unsigned long long spwcuc_get_tp_et(void *spwcuc) |
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| 229 | { |
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| 230 | return (((unsigned long long)spwcuc_get_tp_et_coarse(spwcuc)) << 24) | spwcuc_get_tp_et_fine(spwcuc); |
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| 231 | } |
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| 232 | |
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| 233 | /* Clear interrupts */ |
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| 234 | void spwcuc_clear_irqs(void *spwcuc, int irqs) |
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| 235 | { |
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| 236 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 237 | |
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| 238 | priv->regs->picr = irqs; |
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| 239 | } |
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| 240 | |
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| 241 | /* Enable interrupts */ |
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| 242 | void spwcuc_enable_irqs(void *spwcuc, int irqs) |
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| 243 | { |
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| 244 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 245 | |
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| 246 | priv->regs->imr = irqs; |
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| 247 | } |
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| 248 | |
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| 249 | struct spwcuc_regs *spwcuc_get_regs(void *spwcuc) |
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| 250 | { |
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| 251 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 252 | |
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| 253 | return priv->regs; |
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| 254 | } |
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| 255 | |
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| 256 | void spwcuc_int_register(void *spwcuc, spwcuc_isr_t func, void *data) |
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| 257 | { |
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| 258 | struct spwcuc_priv *priv = (struct spwcuc_priv *)spwcuc; |
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| 259 | |
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| 260 | priv->user_isr = func; |
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| 261 | priv->user_isr_arg = data; |
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| 262 | } |
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| 263 | |
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| 264 | void spwcuc_isr(void *data) |
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| 265 | { |
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| 266 | struct spwcuc_priv *priv = data; |
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| 267 | struct spwcuc_stats *stats = &priv->stats; |
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| 268 | unsigned int pimr = priv->regs->pimr; |
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| 269 | |
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| 270 | stats->nirqs++; |
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| 271 | |
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| 272 | if (pimr & PKT_INIT_IRQ) |
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| 273 | stats->pkt_init++; |
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| 274 | if (pimr & PKT_ERR_IRQ) |
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| 275 | stats->pkt_err++; |
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| 276 | if (pimr & PKT_RX_IRQ) |
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| 277 | stats->pkt_rx++; |
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| 278 | if (pimr & WRAP_ERR_IRQ) |
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| 279 | stats->wraperr++; |
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| 280 | if (pimr & WRAP_IRQ) |
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| 281 | stats->wrap++; |
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| 282 | if (pimr & SYNC_ERR_IRQ) |
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| 283 | stats->syncerr++; |
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| 284 | if (pimr & SYNC_IRQ) |
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| 285 | stats->sync++; |
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| 286 | if (pimr & TOL_ERR_IRQ) |
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| 287 | stats->tolerr++; |
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| 288 | if (pimr & TICK_RX_ERR_IRQ) |
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| 289 | stats->tick_rx_error++; |
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| 290 | if (pimr & TICK_RX_WRAP_IRQ) |
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| 291 | stats->tick_rx_wrap++; |
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| 292 | if (pimr & TICK_RX_IRQ) |
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| 293 | stats->tick_rx++; |
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| 294 | if (pimr & TICK_TX_WRAP_IRQ) |
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| 295 | stats->tick_tx_wrap++; |
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| 296 | if (pimr & TICK_TX_IRQ) |
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| 297 | stats->tick_tx++; |
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| 298 | |
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| 299 | /* Let user Handle Interrupt */ |
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| 300 | if ( priv->user_isr ) |
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| 301 | priv->user_isr(pimr, priv->user_isr_arg); |
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| 302 | } |
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| 303 | |
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| 304 | /*** INTERFACE TO DRIVER MANAGER ***/ |
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| 305 | |
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[126b25d] | 306 | static int spwcuc_init2(struct drvmgr_dev *dev) |
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[3bb4122] | 307 | { |
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| 308 | struct amba_dev_info *ambadev; |
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| 309 | struct ambapp_core *pnpinfo; |
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| 310 | struct spwcuc_priv *priv; |
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| 311 | struct spwcuc_regs *regs; |
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| 312 | |
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| 313 | priv = (struct spwcuc_priv *)malloc(sizeof(*priv)); |
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| 314 | if ( priv == NULL ) |
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| 315 | return -1; |
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| 316 | memset(priv, 0, sizeof(*priv)); |
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| 317 | priv->dev = dev; |
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| 318 | dev->priv = priv; |
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| 319 | |
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| 320 | /* Get device information from AMBA PnP information */ |
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| 321 | ambadev = (struct amba_dev_info *)dev->businfo; |
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| 322 | if ( ambadev == NULL ) { |
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| 323 | return -1; |
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| 324 | } |
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| 325 | pnpinfo = &ambadev->info; |
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| 326 | regs = (struct spwcuc_regs *)pnpinfo->apb_slv->start; |
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| 327 | |
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| 328 | priv->regs = regs; |
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| 329 | |
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| 330 | spwcuc_hw_reset(priv); |
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| 331 | |
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| 332 | return 0; |
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| 333 | } |
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| 334 | |
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| 335 | struct drvmgr_drv_ops spwcuc_ops = |
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| 336 | { |
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| 337 | {NULL, spwcuc_init2, NULL, NULL}, |
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| 338 | NULL, |
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| 339 | NULL |
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| 340 | }; |
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| 341 | |
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| 342 | struct amba_dev_id spwcuc_ids[] = |
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| 343 | { |
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| 344 | {VENDOR_GAISLER, GAISLER_SPWCUC}, |
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| 345 | {0, 0} /* Mark end of table */ |
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| 346 | }; |
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| 347 | |
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| 348 | struct amba_drv_info spwcuc_drv_info = |
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| 349 | { |
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| 350 | { |
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| 351 | DRVMGR_OBJ_DRV, /* Driver */ |
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| 352 | NULL, /* Next driver */ |
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| 353 | NULL, /* Device list */ |
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| 354 | DRIVER_AMBAPP_GAISLER_SPWCUC_ID,/* Driver ID */ |
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| 355 | "SPWCUC_DRV", /* Driver Name */ |
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| 356 | DRVMGR_BUS_TYPE_AMBAPP, /* Bus Type */ |
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| 357 | &spwcuc_ops, |
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| 358 | NULL, /* Funcs */ |
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| 359 | 0, /* No devices yet */ |
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| 360 | 0, |
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| 361 | }, |
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| 362 | &spwcuc_ids[0] |
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| 363 | }; |
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| 364 | |
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| 365 | /* Register the SPWCUC Driver */ |
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| 366 | void spwcuc_register(void) |
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| 367 | { |
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| 368 | drvmgr_drv_register(&spwcuc_drv_info.general); |
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| 369 | } |
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