bzr branch
http://suren.me/webbzr/alps/pcitool
65
by Suren A. Chilingaryan
Separate NWL loopback code, provide DMA start/stop interfaces |
1 |
#define _BSD_SOURCE
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2 |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
3 |
#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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6 |
#include <unistd.h> |
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7 |
#include <sys/time.h> |
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8 |
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9 |
#include "pci.h" |
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10 |
#include "pcilib.h" |
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11 |
#include "error.h" |
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12 |
#include "tools.h" |
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236
by Suren A. Chilingaryan
Big redign of model structures |
13 |
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227
by Suren A. Chilingaryan
Initial implementation of IPEDMA, dummy driver for KAPTURE, start of API changes |
14 |
#include "nwl_private.h" |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
15 |
#include "nwl_defines.h" |
78
by Suren A. Chilingaryan
Correctly detect the tail pointer of C2S ring |
16 |
#include "nwl_engine_buffers.h" |
65
by Suren A. Chilingaryan
Separate NWL loopback code, provide DMA start/stop interfaces |
17 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
18 |
int dma_nwl_read_engine_config(nwl_dma_t *ctx, pcilib_dma_engine_description_t *info, const char *base) { |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
19 |
uint32_t val; |
20 |
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21 |
nwl_read_register(val, ctx, base, REG_DMA_ENG_CAP); |
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22 |
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23 |
if ((val & DMA_ENG_PRESENT_MASK) == 0) return PCILIB_ERROR_NOTAVAILABLE; |
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24 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
25 |
info->addr = (val & DMA_ENG_NUMBER) >> DMA_ENG_NUMBER_SHIFT; |
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if ((info->addr > PCILIB_MAX_DMA_ENGINES)||(info->addr < 0)) return PCILIB_ERROR_INVALID_DATA; |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
27 |
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28 |
switch (val & DMA_ENG_DIRECTION_MASK) { |
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29 |
case DMA_ENG_C2S: |
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236
by Suren A. Chilingaryan
Big redign of model structures |
30 |
info->direction = PCILIB_DMA_FROM_DEVICE; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
31 |
break; |
32 |
default: |
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236
by Suren A. Chilingaryan
Big redign of model structures |
33 |
info->direction = PCILIB_DMA_TO_DEVICE; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
34 |
}
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35 |
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36 |
switch (val & DMA_ENG_TYPE_MASK) { |
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37 |
case DMA_ENG_BLOCK: |
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236
by Suren A. Chilingaryan
Big redign of model structures |
38 |
info->type = PCILIB_DMA_TYPE_BLOCK; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
39 |
break; |
40 |
case DMA_ENG_PACKET: |
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236
by Suren A. Chilingaryan
Big redign of model structures |
41 |
info->type = PCILIB_DMA_TYPE_PACKET; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
42 |
break; |
43 |
default: |
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236
by Suren A. Chilingaryan
Big redign of model structures |
44 |
info->type = PCILIB_DMA_TYPE_UNKNOWN; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
45 |
}
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46 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
47 |
info->addr_bits = (val & DMA_ENG_BD_MAX_BC) >> DMA_ENG_BD_MAX_BC_SHIFT; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
48 |
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49 |
return 0; |
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50 |
}
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51 |
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52 |
int dma_nwl_start_engine(nwl_dma_t *ctx, pcilib_dma_engine_t dma) { |
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53 |
int err; |
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54 |
uint32_t val; |
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55 |
uint32_t ring_pa; |
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56 |
struct timeval start, cur; |
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57 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
58 |
pcilib_nwl_engine_context_t *ectx = ctx->engines + dma; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
59 |
char *base = ctx->engines[dma].base_addr; |
65
by Suren A. Chilingaryan
Separate NWL loopback code, provide DMA start/stop interfaces |
60 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
61 |
if (ectx->started) return 0; |
79
by Suren A. Chilingaryan
Few more fixes |
62 |
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71
by Suren A. Chilingaryan
First iteration of work to preserve DMA state between executions |
63 |
// This will only successed if there are no parallel access to DMA engine
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236
by Suren A. Chilingaryan
Big redign of model structures |
64 |
err = dma_nwl_allocate_engine_buffers(ctx, ectx); |
77
by Suren A. Chilingaryan
Stop only started engines |
65 |
if (err) { |
236
by Suren A. Chilingaryan
Big redign of model structures |
66 |
ectx->started = 1; |
77
by Suren A. Chilingaryan
Stop only started engines |
67 |
dma_nwl_stop_engine(ctx, dma); |
68 |
return err; |
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69 |
}
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71
by Suren A. Chilingaryan
First iteration of work to preserve DMA state between executions |
70 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
71 |
if (ectx->reused) { |
72 |
ectx->preserve = 1; |
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
73 |
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109
by Suren A. Chilingaryan
Improvements of DMA engine |
74 |
dma_nwl_acknowledge_irq((pcilib_dma_context_t*)ctx, PCILIB_DMA_IRQ, dma); |
74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
75 |
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76 |
#ifdef NWL_GENERATE_DMA_IRQ
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77 |
dma_nwl_enable_engine_irq(ctx, dma); |
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78 |
#endif /* NWL_GENERATE_DMA_IRQ */ |
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79 |
} else { |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
80 |
// Disable IRQs
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
81 |
err = dma_nwl_disable_engine_irq(ctx, dma); |
77
by Suren A. Chilingaryan
Stop only started engines |
82 |
if (err) { |
236
by Suren A. Chilingaryan
Big redign of model structures |
83 |
ectx->started = 1; |
77
by Suren A. Chilingaryan
Stop only started engines |
84 |
dma_nwl_stop_engine(ctx, dma); |
85 |
return err; |
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86 |
}
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
87 |
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88 |
// Disable Engine & Reseting
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
89 |
val = DMA_ENG_DISABLE|DMA_ENG_USER_RESET; |
90 |
nwl_write_register(val, ctx, base, REG_DMA_ENG_CTRL_STATUS); |
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91 |
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92 |
gettimeofday(&start, NULL); |
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93 |
do { |
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94 |
nwl_read_register(val, ctx, base, REG_DMA_ENG_CTRL_STATUS); |
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95 |
gettimeofday(&cur, NULL); |
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96 |
} while ((val & (DMA_ENG_STATE_MASK|DMA_ENG_USER_RESET))&&(((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec)) < PCILIB_REGISTER_TIMEOUT)); |
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97 |
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98 |
if (val & (DMA_ENG_STATE_MASK|DMA_ENG_USER_RESET)) { |
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236
by Suren A. Chilingaryan
Big redign of model structures |
99 |
pcilib_error("Timeout during reset of DMA engine %i", ectx->desc->addr); |
77
by Suren A. Chilingaryan
Stop only started engines |
100 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
101 |
ectx->started = 1; |
77
by Suren A. Chilingaryan
Stop only started engines |
102 |
dma_nwl_stop_engine(ctx, dma); |
74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
103 |
return PCILIB_ERROR_TIMEOUT; |
104 |
}
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105 |
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106 |
val = DMA_ENG_RESET; |
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107 |
nwl_write_register(val, ctx, base, REG_DMA_ENG_CTRL_STATUS); |
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108 |
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109 |
gettimeofday(&start, NULL); |
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110 |
do { |
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111 |
nwl_read_register(val, ctx, base, REG_DMA_ENG_CTRL_STATUS); |
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gettimeofday(&cur, NULL); |
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113 |
} while ((val & DMA_ENG_RESET)&&(((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec)) < PCILIB_REGISTER_TIMEOUT)); |
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114 |
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115 |
if (val & DMA_ENG_RESET) { |
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236
by Suren A. Chilingaryan
Big redign of model structures |
116 |
pcilib_error("Timeout during reset of DMA engine %i", ectx->desc->addr); |
77
by Suren A. Chilingaryan
Stop only started engines |
117 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
118 |
ectx->started = 1; |
77
by Suren A. Chilingaryan
Stop only started engines |
119 |
dma_nwl_stop_engine(ctx, dma); |
74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
120 |
return PCILIB_ERROR_TIMEOUT; |
121 |
}
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122 |
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109
by Suren A. Chilingaryan
Improvements of DMA engine |
123 |
dma_nwl_acknowledge_irq((pcilib_dma_context_t*)ctx, PCILIB_DMA_IRQ, dma); |
74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
124 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
125 |
ring_pa = pcilib_kmem_get_pa(ctx->dmactx.pcilib, ectx->ring); |
126 |
nwl_write_register(ring_pa, ctx, ectx->base_addr, REG_DMA_ENG_NEXT_BD); |
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127 |
nwl_write_register(ring_pa, ctx, ectx->base_addr, REG_SW_NEXT_BD); |
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
128 |
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129 |
__sync_synchronize(); |
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130 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
131 |
nwl_read_register(val, ctx, ectx->base_addr, REG_DMA_ENG_CTRL_STATUS); |
74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
132 |
val |= (DMA_ENG_ENABLE); |
236
by Suren A. Chilingaryan
Big redign of model structures |
133 |
nwl_write_register(val, ctx, ectx->base_addr, REG_DMA_ENG_CTRL_STATUS); |
74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
134 |
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135 |
__sync_synchronize(); |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
136 |
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137 |
#ifdef NWL_GENERATE_DMA_IRQ
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
138 |
dma_nwl_enable_engine_irq(ctx, dma); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
139 |
#endif /* NWL_GENERATE_DMA_IRQ */ |
140 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
141 |
if (ectx->desc->direction == PCILIB_DMA_FROM_DEVICE) { |
142 |
ring_pa += (ectx->ring_size - 1) * PCILIB_NWL_DMA_DESCRIPTOR_SIZE; |
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143 |
nwl_write_register(ring_pa, ctx, ectx->base_addr, REG_SW_NEXT_BD); |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
144 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
145 |
ectx->tail = 0; |
146 |
ectx->head = (ectx->ring_size - 1); |
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
147 |
} else { |
236
by Suren A. Chilingaryan
Big redign of model structures |
148 |
ectx->tail = 0; |
149 |
ectx->head = 0; |
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
150 |
}
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
151 |
}
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152 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
153 |
ectx->started = 1; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
154 |
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155 |
return 0; |
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156 |
}
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157 |
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158 |
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159 |
int dma_nwl_stop_engine(nwl_dma_t *ctx, pcilib_dma_engine_t dma) { |
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160 |
int err; |
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161 |
uint32_t val; |
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162 |
uint32_t ring_pa; |
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163 |
struct timeval start, cur; |
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75
by Suren A. Chilingaryan
Few fixes |
164 |
pcilib_kmem_flags_t flags; |
165 |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
166 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
167 |
pcilib_nwl_engine_context_t *ectx = ctx->engines + dma; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
168 |
char *base = ctx->engines[dma].base_addr; |
169 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
170 |
if (!ectx->started) return 0; |
77
by Suren A. Chilingaryan
Stop only started engines |
171 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
172 |
ectx->started = 0; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
173 |
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174 |
err = dma_nwl_disable_engine_irq(ctx, dma); |
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175 |
if (err) return err; |
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176 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
177 |
if (!ectx->preserve) { |
71
by Suren A. Chilingaryan
First iteration of work to preserve DMA state between executions |
178 |
// Stopping DMA is not enough reset is required
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179 |
val = DMA_ENG_DISABLE|DMA_ENG_USER_RESET|DMA_ENG_RESET; |
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180 |
nwl_write_register(val, ctx, base, REG_DMA_ENG_CTRL_STATUS); |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
181 |
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74
by Suren A. Chilingaryan
Implement DMA access synchronization for NWL implementation |
182 |
gettimeofday(&start, NULL); |
183 |
do { |
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184 |
nwl_read_register(val, ctx, base, REG_DMA_ENG_CTRL_STATUS); |
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185 |
gettimeofday(&cur, NULL); |
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186 |
} while ((val & (DMA_ENG_RUNNING))&&(((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec)) < PCILIB_REGISTER_TIMEOUT)); |
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187 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
188 |
if (ectx->ring) { |
189 |
ring_pa = pcilib_kmem_get_pa(ctx->dmactx.pcilib, ectx->ring); |
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190 |
nwl_write_register(ring_pa, ctx, ectx->base_addr, REG_DMA_ENG_NEXT_BD); |
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191 |
nwl_write_register(ring_pa, ctx, ectx->base_addr, REG_SW_NEXT_BD); |
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71
by Suren A. Chilingaryan
First iteration of work to preserve DMA state between executions |
192 |
}
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
193 |
}
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88
by Suren A. Chilingaryan
IRQ acknowledgement support in the engine API |
194 |
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109
by Suren A. Chilingaryan
Improvements of DMA engine |
195 |
dma_nwl_acknowledge_irq((pcilib_dma_context_t*)ctx, PCILIB_DMA_IRQ, dma); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
196 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
197 |
if (ectx->preserve) { |
75
by Suren A. Chilingaryan
Few fixes |
198 |
flags = PCILIB_KMEM_FLAG_REUSE; |
199 |
} else { |
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200 |
flags = PCILIB_KMEM_FLAG_HARDWARE|PCILIB_KMEM_FLAG_PERSISTENT; |
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201 |
}
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202 |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
203 |
// Clean buffers
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236
by Suren A. Chilingaryan
Big redign of model structures |
204 |
if (ectx->ring) { |
205 |
pcilib_free_kernel_memory(ctx->dmactx.pcilib, ectx->ring, flags); |
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206 |
ectx->ring = NULL; |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
207 |
}
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208 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
209 |
if (ectx->pages) { |
210 |
pcilib_free_kernel_memory(ctx->dmactx.pcilib, ectx->pages, flags); |
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211 |
ectx->pages = NULL; |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
212 |
}
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213 |
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214 |
return 0; |
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215 |
}
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216 |
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217 |
int dma_nwl_write_fragment(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uintptr_t addr, size_t size, pcilib_dma_flags_t flags, pcilib_timeout_t timeout, void *data, size_t *written) { |
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218 |
int err; |
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219 |
size_t pos; |
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220 |
size_t bufnum; |
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221 |
nwl_dma_t *ctx = (nwl_dma_t*)vctx; |
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222 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
223 |
pcilib_nwl_engine_context_t *ectx = ctx->engines + dma; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
224 |
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109
by Suren A. Chilingaryan
Improvements of DMA engine |
225 |
err = dma_nwl_start(vctx, dma, PCILIB_DMA_FLAGS_DEFAULT); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
226 |
if (err) return err; |
227 |
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228 |
if (data) { |
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236
by Suren A. Chilingaryan
Big redign of model structures |
229 |
for (pos = 0; pos < size; pos += ectx->page_size) { |
230 |
int block_size = min2(size - pos, ectx->page_size); |
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64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
231 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
232 |
bufnum = dma_nwl_get_next_buffer(ctx, ectx, 1, timeout); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
233 |
if (bufnum == PCILIB_DMA_BUFFER_INVALID) { |
234 |
if (written) *written = pos; |
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235 |
return PCILIB_ERROR_TIMEOUT; |
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236 |
}
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237 |
||
236
by Suren A. Chilingaryan
Big redign of model structures |
238 |
void *buf = pcilib_kmem_get_block_ua(ctx->dmactx.pcilib, ectx->pages, bufnum); |
108
by Suren A. Chilingaryan
Fix DMA synchronization for writes as well |
239 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
240 |
pcilib_kmem_sync_block(ctx->dmactx.pcilib, ectx->pages, PCILIB_KMEM_SYNC_FROMDEVICE, bufnum); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
241 |
memcpy(buf, data, block_size); |
236
by Suren A. Chilingaryan
Big redign of model structures |
242 |
pcilib_kmem_sync_block(ctx->dmactx.pcilib, ectx->pages, PCILIB_KMEM_SYNC_TODEVICE, bufnum); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
243 |
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236
by Suren A. Chilingaryan
Big redign of model structures |
244 |
err = dma_nwl_push_buffer(ctx, ectx, block_size, (flags&PCILIB_DMA_FLAG_EOP)&&((pos + block_size) == size), timeout); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
245 |
if (err) { |
246 |
if (written) *written = pos; |
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247 |
return err; |
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248 |
}
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249 |
}
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250 |
}
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251 |
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252 |
if (written) *written = size; |
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253 |
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254 |
if (flags&PCILIB_DMA_FLAG_WAIT) { |
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236
by Suren A. Chilingaryan
Big redign of model structures |
255 |
bufnum = dma_nwl_get_next_buffer(ctx, ectx, PCILIB_NWL_DMA_PAGES - 1, timeout); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
256 |
if (bufnum == PCILIB_DMA_BUFFER_INVALID) return PCILIB_ERROR_TIMEOUT; |
257 |
}
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258 |
||
259 |
return 0; |
|
260 |
}
|
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261 |
||
262 |
int dma_nwl_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uintptr_t addr, size_t size, pcilib_dma_flags_t flags, pcilib_timeout_t timeout, pcilib_dma_callback_t cb, void *cbattr) { |
|
117
by Suren A. Chilingaryan
new event architecture, first trial |
263 |
int err, ret = PCILIB_STREAMING_REQ_PACKET; |
126
by Suren A. Chilingaryan
multithread preprocessing of ipecamera frames and code reorganization |
264 |
pcilib_timeout_t wait = 0; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
265 |
size_t res = 0; |
266 |
size_t bufnum; |
|
267 |
size_t bufsize; |
|
117
by Suren A. Chilingaryan
new event architecture, first trial |
268 |
|
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
269 |
nwl_dma_t *ctx = (nwl_dma_t*)vctx; |
270 |
||
271 |
int eop; |
|
272 |
||
236
by Suren A. Chilingaryan
Big redign of model structures |
273 |
pcilib_nwl_engine_context_t *ectx = ctx->engines + dma; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
274 |
|
109
by Suren A. Chilingaryan
Improvements of DMA engine |
275 |
err = dma_nwl_start(vctx, dma, PCILIB_DMA_FLAGS_DEFAULT); |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
276 |
if (err) return err; |
109
by Suren A. Chilingaryan
Improvements of DMA engine |
277 |
|
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
278 |
do { |
117
by Suren A. Chilingaryan
new event architecture, first trial |
279 |
switch (ret&PCILIB_STREAMING_TIMEOUT_MASK) { |
280 |
case PCILIB_STREAMING_CONTINUE: wait = PCILIB_DMA_TIMEOUT; break; |
|
281 |
case PCILIB_STREAMING_WAIT: wait = timeout; break; |
|
126
by Suren A. Chilingaryan
multithread preprocessing of ipecamera frames and code reorganization |
282 |
// case PCILIB_STREAMING_CHECK: wait = 0; break;
|
117
by Suren A. Chilingaryan
new event architecture, first trial |
283 |
}
|
284 |
||
236
by Suren A. Chilingaryan
Big redign of model structures |
285 |
bufnum = dma_nwl_wait_buffer(ctx, ectx, &bufsize, &eop, wait); |
117
by Suren A. Chilingaryan
new event architecture, first trial |
286 |
if (bufnum == PCILIB_DMA_BUFFER_INVALID) { |
287 |
return (ret&PCILIB_STREAMING_FAIL)?PCILIB_ERROR_TIMEOUT:0; |
|
109
by Suren A. Chilingaryan
Improvements of DMA engine |
288 |
}
|
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
289 |
|
109
by Suren A. Chilingaryan
Improvements of DMA engine |
290 |
// EOP is not respected in IPE Camera
|
236
by Suren A. Chilingaryan
Big redign of model structures |
291 |
if (ctx->ignore_eop) eop = 1; |
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
292 |
|
236
by Suren A. Chilingaryan
Big redign of model structures |
293 |
pcilib_kmem_sync_block(ctx->dmactx.pcilib, ectx->pages, PCILIB_KMEM_SYNC_FROMDEVICE, bufnum); |
294 |
void *buf = pcilib_kmem_get_block_ua(ctx->dmactx.pcilib, ectx->pages, bufnum); |
|
109
by Suren A. Chilingaryan
Improvements of DMA engine |
295 |
ret = cb(cbattr, (eop?PCILIB_DMA_FLAG_EOP:0), bufsize, buf); |
190
by Suren A. Chilingaryan
Do not return DMA buffer in streaming read if the callback returns error |
296 |
if (ret < 0) return -ret; |
107
by Suren A. Chilingaryan
Do not sync to device, looks like it is not required |
297 |
// DS: Fixme, it looks like we can avoid calling this for the sake of performance
|
236
by Suren A. Chilingaryan
Big redign of model structures |
298 |
// pcilib_kmem_sync_block(ctx->dmactx.pcilib, ectx->pages, PCILIB_KMEM_SYNC_TODEVICE, bufnum);
|
299 |
dma_nwl_return_buffer(ctx, ectx); |
|
64
by Suren A. Chilingaryan
Another reorganization of NWL sources |
300 |
|
301 |
res += bufsize; |
|
302 |
||
303 |
} while (ret); |
|
304 |
||
305 |
return 0; |
|
306 |
}
|
|
109
by Suren A. Chilingaryan
Improvements of DMA engine |
307 |
|
308 |
int dma_nwl_wait_completion(nwl_dma_t * ctx, pcilib_dma_engine_t dma, pcilib_timeout_t timeout) { |
|
309 |
if (dma_nwl_get_next_buffer(ctx, ctx->engines + dma, PCILIB_NWL_DMA_PAGES - 1, PCILIB_DMA_TIMEOUT) == (PCILIB_NWL_DMA_PAGES - 1)) return 0; |
|
310 |
else return PCILIB_ERROR_TIMEOUT; |
|
311 |
}
|
|
312 |