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本帖最后由 liangws 于 2017-4-11 17:00 编辑
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问题描述:
9 {. U, @# F: I. b5 h% s在syslink模式下开发upp,在138端参考tl-upp_saver程序通过channel b发送数据到FPGA端,FPGA接收数据到FIFO,然后从FIFO端发送給138的upp channel A。fpga端程序通过仿真没有发现什么问题,具体方针波形如下:
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图中的UPP_CH0*对应于138的Channel b通道,UPP_CH1*对应于138的channela通道。' z- Q7 \ c. u: m9 f+ U. O
! G% j7 K! D% x) I% x测试结果如下:
% D- N6 j4 e: w5 }' O7 L& d; b138端发送512字节,要连续发送8次,即8*512字节,接收端才能收满一个512字节数据,这个可能是什么问题引起的?
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备注:
2 |9 W/ w4 Y* m0 O# R( u' f/ x5 j9 |1、看了upp相关文档,绑定的窗口地址WindowAddress要8字节对齐,tl-upp_saver例程中只有发送端upp_buffer_b有8字节对齐,接收端没有8字节对齐,这个是否有问题?我上述问题是否由于这个引起?
8 a" H; f* W! l: H* w! x2、相关代码如下:
$ T' f3 J, I' V6 a% e//UPP DMA缓冲大小512字节
- _6 }; s3 ?6 g3 Q" R#define UPP_DMA_BYTE_COUNT (64) //DMA行字节数,每行64个字节,行的字节必须是64的整数倍
. p7 u' H0 E' l+ \1 j' _#define UPP_DMA_LINE_COUNT 8 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT H: L( N: P u. E8 M( e7 ~
#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)
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! i$ N( L4 {- u$ v/ B//upp接收、发送buffer9 G! X8 e% c n0 G
#pragma DATA_ALIGN(upp_buffer_a, 8)0 E2 _! J7 `# m1 s! |1 l
#pragma DATA_ALIGN(upp_buffer_b, 8)% i9 C- i q" T
0 S1 |7 U+ |- U" i! u. hunsigned char upp_buffer_a[UPP_DMA_BUFFER_SIZE];
! c" V5 O! @' ?( {" L- h/ ]3 kunsigned char upp_buffer_b[UPP_DMA_BUFFER_SIZE];8 P: J! j6 G, X$ w" y. T, i( {4 J, L
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7 f! p+ w) p9 H( [9 d3 Gstatic bool server_upp_data_recv(Server *server)
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if(server->upp_channel_a_recv == false) {
0 _. \% [) A9 u# r server_msg_send(server, APP_CMD_LOG, "upp recv: start");
8 h: o/ \" O0 s/ M% G if(ListMP_empty(server->upp_recv_list_free) == FALSE) {+ t' c$ v* `, u! T: \- i* p
server_msg_send(server, APP_CMD_LOG, "upp recv: get node success");) d4 M" `3 v: `
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6 a2 c8 }4 D( G ^. u; b memset(upp_buffer_a, 0, UPP_DMA_BUFFER_SIZE);: l* z# c) V# x3 u0 y3 F* j. [, r" p
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server->upp_channel_a_recv = true;//
% J6 X3 t( K( {! t1 P% Q! C server->transposeParA.WindowAddress = ((unsigned int *)upp_buffer_a);. c I% T/ ^/ T- R) f- P& t
server->transposeParA.LineCount = UPP_DMA_LINE_COUNT;
! y9 Y6 Z) X- u. z0 S* Y server->transposeParA.ByteCount = UPP_DMA_BYTE_COUNT;9 N7 t1 Q$ Y8 U4 i4 B) }2 u' b
server->transposeParA.LineOffsetAddress = UPP_DMA_BYTE_COUNT;//
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upp_error_count = 0;
0 Y$ V6 P5 E2 z. }3 N0 t upp_dmai_int_cut = 0;
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: I8 ]4 v' u- K) h // fill in data ) c/ O) W$ a1 c6 @% V( h4 r" p
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHI, &server->transposeParA);8 P/ m6 G% s2 }0 g' g
server_msg_send(server, APP_CMD_LOG, "upp recv: binding node to dma chi");0 }1 X l0 @8 O9 `( i8 x
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}
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if (upp_dmai_int_cut > 0){
! Z: `9 H. d+ R DataNode *node = (DataNode *)ListMP_getTail(server->upp_recv_list_free);
9 c! c4 N- X0 ~6 G! @+ q Uint8 *data = (Uint8 *)SharedRegion_getPtr(node->SR_buffer);3 m+ _ L4 Y+ N
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//copy data to upp_recv_list_busy M8 @# z; B- V: ~: r
memcpy(data, upp_buffer_a, UPP_DMA_BUFFER_SIZE);
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//; ^, S/ i) y7 g w
ListMP_putHead(server->upp_recv_list_busy, (ListMP_Elem *)node);! [; R( S+ [+ c8 j
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//1 O4 c- i+ v7 j5 N8 ]
server->upp_channel_a_recv = false;//
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server_msg_send(server, APP_CMD_LOG, "upp recv: success");
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}
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return true;9 o1 G8 y3 b8 v
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static bool server_upp_data_send(Server *server)" h( S- I) D4 y+ P
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if(ListMP_empty(server->upp_send_list_busy) == FALSE){
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unsigned char *data = (unsigned char *)SharedRegion_getPtr(node->SR_buffer);. F' u1 P# z6 ]
char tmp[128] ={0};4 h2 t2 v$ W3 r/ [' I
3 q, m, y6 Q, u( i) H server_msg_send(server, APP_CMD_LOG, "upp send: start");4 u% u! |. ]! z: t( A
print_log(server, data, 64);
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4 x7 ]( m7 v% o, U e //
& A! y! o* e- \1 _ ` memset(upp_buffer_b, 0, UPP_DMA_BUFFER_SIZE);- c2 J+ P1 `* O4 w% r
memcpy(upp_buffer_b, data, UPP_DMA_BUFFER_SIZE);2 f1 ? ^9 J" y( v- a" K: M- z# X
print_log(server, upp_buffer_b, 64);
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server->transposeParB.WindowAddress = ((unsigned int *)upp_buffer_b);
/ l% ?# j0 f) d8 R; p server->transposeParB.LineCount = UPP_DMA_LINE_COUNT;
% k T$ c) a, r server->transposeParB.ByteCount = UPP_DMA_BYTE_COUNT;
0 p) P- w9 ?1 A server->transposeParB.LineOffsetAddress = UPP_DMA_BYTE_COUNT;
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memset(tmp, 0, sizeof(tmp));( d& ~6 q" I8 W
sprintf(tmp, "upp send data: sizeof(unsigned int):%d, upp_buffer_b:%p, WindowAddress:%ud", 1 G: W' {9 X9 m: D1 Y& S4 N
sizeof(unsigned int), upp_buffer_b, server->transposeParB.WindowAddress);' f/ Q* n1 O1 W3 b2 R3 U
server_msg_send(server, APP_CMD_LOG, tmp);# U8 {# h. S ^2 s& C# \
6 c- G' |7 `& V& x" n upp_error_count = 0;
- w6 Z& ?2 O* u upp_dmaq_int_cut = 0;
2 o/ b+ Q9 h! B // fill in data - ?7 \6 Q' N. I% k; g! r9 M
uPPDMATransfer(SOC_UPP_0_REGS, uPP_DMA_CHQ, &server->transposeParB);
) ?$ N; g0 g6 ?7 M! I) z server_msg_send(server, APP_CMD_LOG, "upp send: binding node to dma chq");
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" _+ l' t; ]4 J$ r // wait send success2 K6 @. K+ B9 @$ u4 `
while (upp_dmaq_int_cut < 1 && upp_error_count == 0);
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. O+ P! d8 d1 Z8 v3 U5 [- ]9 ^ // make data node in free list ; p7 P8 {7 r7 _1 N" d& `; t
ListMP_putHead(server->upp_send_list_free, (ListMP_Elem *)node);
3 g: ^: h& g' ` server_msg_send(server, APP_CMD_LOG, "upp send: success");8 M3 k; L" r9 y# O7 u5 t
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return true;
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