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xaxidma_example_sg_poll.txt
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源码
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/******************************************************************************( h# `; J% p# M6 @( T" s! U
* C U! ?/ G4 S) r4 @
* Copyright (C) 2010 - 2018 Xilinx, Inc. All rights reserved." z' A9 B2 T) d/ S6 K* Z% w
*
* Z# u! C1 G6 B% y; Q# w* w% a* Permission is hereby granted, free of charge, to any person obtaining a copy
- ]* h' Q& b( B1 w |2 q- ~$ ~* of this software and associated documentation files (the "Software"), to deal
D6 S% \ A- {, I# S; a' m& t* in the Software without restriction, including without limitation the rights3 y7 ]0 m& Z* E! D& {. d( r
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell. E @7 F9 R1 ^- E4 u+ G/ G/ C
* copies of the Software, and to permit persons to whom the Software is
* j& ?8 D) r; E0 Z9 M* furnished to do so, subject to the following conditions:
2 u- F+ y9 g4 y( `) v, h*
* d5 b7 Q, m- ? r* The above copyright notice and this permission notice shall be included in+ ]1 d2 F8 G8 B( U, C
* all copies or substantial portions of the Software.
Q; X) {4 I4 N) A) A*% v3 S( w9 c+ S
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
5 C2 C, l: H8 o: G# c+ D* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,9 y7 c# `1 n/ C: P1 N6 f+ W' Q0 S
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL d" ^6 w( h! A' ~
* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,2 t6 |- f/ V6 b- I" p# ^
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, {, e3 {, z. B
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE5 d8 ], r5 F8 _( W1 R, B
* SOFTWARE.
; J% j* \3 c$ b5 v7 a& N8 i& K*6 z8 F; @$ e$ c! T" u( Q0 k# ~
* Except as contained in this notice, the name of the Xilinx shall not be used
/ {% ^0 s; Q( z% M6 N7 Z- R* in advertising or otherwise to promote the sale, use or other dealings in
! U$ H t" e, u p2 L! l* this Software without prior written authorization from Xilinx.
4 C/ V& k+ [6 v: ?# s6 E7 C*; q$ u! f& P$ I* Y
******************************************************************************/
+ @, {5 h Q" r5 y7 R/ k/*****************************************************************************/" U3 D, y% `# f/ f3 b, Y
/**1 M) \- K! D: p/ m" u' ^5 }
*
+ U+ A* P5 e1 B8 x * @file xaxidma_example_sg_poll.c
' C H! _- C/ u6 A *
& L F: M7 I5 T% ~6 h6 V: L * This file demonstrates how to use the xaxidma driver on the Xilinx AXI% V) K' _6 _* o) d- n: B
* DMA core (AXIDMA) to transfer packets in polling mode when the AXIDMA4 m( g. k6 P0 S/ e
* core is configured in Scatter Gather Mode.+ L- q- x: n/ t9 l( F; H5 ~
*1 M- t* c$ r* Z2 n3 t8 ]
* This code assumes a loopback hardware widget is connected to the AXI DMA6 {1 k# G7 d; L+ x( X8 [
* core for data packet loopback.
* W9 n' Y. z5 G: S6 `& ~3 } *
' M& X) f4 U+ B& ^ * To see the debug print, you need a Uart16550 or uartlite in your system,
% W" C/ C6 i) e' ~+ f * and please set "-DDEBUG" in your compiler options. You need to rebuild your. O7 H: W7 m6 X) p
* software executable.
" r. \4 L5 T k, H* d, G *
6 \7 p1 M6 l1 p * Make sure that MEMORY_BASE is defined properly as per the HW system. The
1 @) n: e- C5 u; ^9 N * h/w system built in Area mode has a maximum DDR memory limit of 64MB. In
) V* v, W5 Y% H0 ^# ` * throughput mode, it is 512MB. These limits are need to ensured for* o9 J0 A. X1 D( ?3 U
* proper operation of this code.
, b; |8 R. |, y *' g- w: n$ D4 w2 l8 ^0 c! Z
*
! P6 T4 }2 J4 E* L0 }, b2 Y * <pre>% U% _0 a* e! f
* MODIFICATION HISTORY:* i. z; O. I: y7 {; v! t& H/ ?
*
% ?: C* K. B& Y" s" {3 K% X$ g * Ver Who Date Changes, l" |" T' [$ K0 Y
* ----- ---- -------- -------------------------------------------------------3 x$ N$ x' k$ u4 x
* 1.00a jz 05/17/10 First release. b( w3 X5 ] O; G" |2 G. T; f
* 2.00a jz 08/10/10 Second release, added in xaxidma_g.c, xaxidma_sinit.c,
4 ?; v, f7 _" B* |2 p1 p * updated tcl file, added xaxidma_porting_guide.h, removed4 O" n9 B4 Q" @8 {) L0 F
* workaround for endianness
5 X4 s( @* I0 e& ]% ~ * 4.00a rkv 02/22/11 Name of the file has been changed for naming consistency/ R4 L/ U$ s& E4 x: B
* Added interrupt support for ARM./ C5 z' X; c9 [- L/ a- \
* 5.00a srt 03/05/12 Added Flushing and Invalidation of Caches to fix CRs9 X" `) r/ T+ U% @( \. p% P8 ?; S
* 648103, 648701.2 ^5 K5 g2 ]9 p4 x
* Added V7 DDR Base Address to fix CR 649405.2 D6 c. A3 e9 ?! d" e s
* 6.00a srt 03/27/12 Changed API calls to support MCDMA driver.
7 a* k: E) @' @3 Q2 l( O * 7.00a srt 06/18/12 API calls are reverted back for backward compatibility.
) C# L( ~5 q ?7 E$ R; M8 X * 7.01a srt 11/02/12 Buffer sizes (Tx and Rx) are modified to meet maximum
" U+ X" G$ {8 b4 f& C6 E% Z * DDR memory limit of the h/w system built with Area mode
: F. I* ]4 N- r * 7.02a srt 03/01/13 Updated DDR base address for IPI designs (CR 703656).
6 [6 l% L; P$ s, _8 u * 9.1 adk 01/07/16 Updated DDR base address for Ultrascale (CR 799532) and
2 j) C/ N- D) I' y2 Z * removed the defines for S6/V6.
+ \: d$ Z2 j" ?. d$ k( f * 9.2 vak 15/04/16 Fixed compilation warnings in th example
: l4 z9 H6 F2 f3 C * 9.3 ms 01/23/17 Modified xil_printf statement in main function to
K, E7 i: j* H" R. a * ensure that "Successfully ran" and "Failed" strings are
' i; B3 k( }4 R * available in all examples. This is a fix for CR-965028.
/ `. V8 h- d0 V: D( _# V * </pre>
1 {4 j( U- S. |/ V, u) B/ s d *
2 c# S3 X) u& k% q8 u( r2 m * ***************************************************************************
7 W# W; f* k5 ~% A8 L! B( m. P: p- J */3 ^' x) S6 u1 H9 I
/***************************** Include Files *********************************/6 W" l9 r" k" K" ]! Y
#include "xaxidma.h"
6 D3 k8 {0 e& a#include "xparameters.h"! P9 x* A. w x
#include "xdebug.h"
0 N6 ?' I% L, b1 d# {+ I6 o! J+ M2 _1 u2 _4 z5 N
#ifdef __aarch64__
1 \% x) j" [- @, p4 X- N; E#include "xil_mmu.h"- | o( i. t8 ~& u- X) e, n
#endif
% q& y" F3 i7 A" l1 A1 P' F4 B
1 U$ E3 F3 C. w' |$ v- f#if defined(XPAR_UARTNS550_0_BASEADDR)3 Q7 p) p0 e: }: [* r8 c1 F9 E, [
#include "xuartns550_l.h" /* to use uartns550 */
% `0 R0 h2 D# |% Q0 d8 Y, w3 P#endif$ S f& _. Z( }" o: \5 M
0 w1 P. h0 g/ O# j6 w% v* J#if (!defined(DEBUG))
) T; ^& _9 A( c0 o$ bextern void xil_printf(const char *format, ...);2 M7 j' R' K! F
#endif+ P: _( ]/ G+ G
/ ? C0 t/ G& o3 x! A" S
/******************** Constant Definitions **********************************/
" ^& {. r# W- D7 h) n2 W4 X6 k
' [6 ?* ]& W% H. ~3 E8 X& J' d/*
2 [4 H% W1 x( H3 } * Device hardware build related constants.% Q U+ q: K) O) j' J* o
*/
$ O) r- ]! q+ O$ D9 s$ C
$ w; V9 B+ r5 t* c! k5 h! e#define DMA_DEV_ID XPAR_AXIDMA_0_DEVICE_ID& T, ?3 y e- W
7 m& c* ]3 F7 U5 e
#ifdef XPAR_AXI_7SDDR_0_S_AXI_BASEADDR+ u* o0 D! j! `- q9 z; e
#define DDR_BASE_ADDR XPAR_AXI_7SDDR_0_S_AXI_BASEADDR0 Y7 c" Q5 D. S2 ^+ G% \& \
#elif XPAR_MIG7SERIES_0_BASEADDR
, p8 M6 w5 ?; p% g5 ~3 x- {#define DDR_BASE_ADDR XPAR_MIG7SERIES_0_BASEADDR
" X) G6 X! \* ~- |5 h Z! K#elif XPAR_MIG_0_BASEADDR
$ b) p( z1 o1 ?6 `& Y; ?#define DDR_BASE_ADDR XPAR_MIG_0_BASEADDR
: C4 `' i4 h7 b, `2 B c#elif XPAR_PSU_DDR_0_S_AXI_BASEADDR
: j/ y$ k* C2 m#define DDR_BASE_ADDR XPAR_PSU_DDR_0_S_AXI_BASEADDR: `4 d. i/ p2 F# W& e
#endif( ^% E0 L+ R% s2 B+ Y
& L2 v% ~# Z: j& ~/ o3 ]: M0 |1 j+ Z
#ifndef DDR_BASE_ADDR
0 ]. S1 s2 q/ Y$ ^8 L#warning CHECK FOR THE VALID DDR ADDRESS IN XPARAMETERS.H, \
8 H; l# ]) {7 J* X. c DEFAULT SET TO 0x01000000
7 M- R! n3 {- \: ~2 s' m) v; [#define MEM_BASE_ADDR 0x01000000; ^7 t+ }# B$ Y) [6 z+ R
#else
2 Z! M+ ], E$ t) V% X. ~: j8 u8 s#define MEM_BASE_ADDR (DDR_BASE_ADDR + 0x1000000), u$ t6 N- A% P9 e% Z
#endif
- `( |3 j1 v# [$ T- i u( a$ t
- t- u0 b9 s8 z#define TX_BD_SPACE_BASE (MEM_BASE_ADDR)
. _+ W4 C( J! _4 i$ o#define TX_BD_SPACE_HIGH (MEM_BASE_ADDR + 0x00000FFF)& Z( q6 D9 R# ]/ u3 @
#define RX_BD_SPACE_BASE (MEM_BASE_ADDR + 0x00001000)3 l- m' {: z+ d
#define RX_BD_SPACE_HIGH (MEM_BASE_ADDR + 0x00001FFF)
7 X w; m7 P9 J5 F" s0 @" ~#define TX_BUFFER_BASE (MEM_BASE_ADDR + 0x00100000)
7 J/ W1 l7 \- }8 R#define RX_BUFFER_BASE (MEM_BASE_ADDR + 0x00300000)3 Z4 ^' m( }# s
#define RX_BUFFER_HIGH (MEM_BASE_ADDR + 0x004FFFFF)4 Z: `* d4 S; L
$ J7 m$ T) d4 s+ I0 X5 u
. U' P+ _1 p q& I; z: o#define MAX_PKT_LEN 0x20
* i" o" Q; A0 o z#define MARK_UNCACHEABLE 0x7016 P3 e* e% t! q. W+ y( l
/ U! q$ g/ T! F, y8 L
#define TEST_START_VALUE 0xC
: V& ]# Q# D" ~+ P. f2 T+ i" r, }* f' d8 l" F' P$ h
/**************************** Type Definitions *******************************/
4 ?9 j' l6 @, s9 y2 x1 V& \& S! b$ F9 S" P' s6 ^
4 r9 _* m/ c0 k) t' m/***************** Macros (Inline Functions) Definitions *********************/, ^5 @+ C; `9 P
1 j6 S0 c6 V/ a8 l9 T/ \
- t. v5 i: t2 G/************************** Function Prototypes ******************************/
3 L6 }- m R' M2 k! t# z8 G#if defined(XPAR_UARTNS550_0_BASEADDR)
! o1 w3 X, @/ r9 D/ p/ V( bstatic void Uart550_Setup(void);
0 i n' J8 U; l3 W/ ]' A#endif
- P) b# `5 c6 g3 x' _6 A. T2 c5 T* B
static int RxSetup(XAxiDma * AxiDmaInstPtr);# o- |- `1 Q) v$ D
static int TxSetup(XAxiDma * AxiDmaInstPtr);2 [% R4 H! f* v e
static int SendPacket(XAxiDma * AxiDmaInstPtr);
& O2 J5 F6 J3 U, u9 ` @) y. Hstatic int CheckData(void);! m/ D3 H7 p/ k& l! `: i4 K1 F4 V
static int CheckDmaResult(XAxiDma * AxiDmaInstPtr);
1 `5 V8 o" g! ?0 W$ k- y; G; i% Y$ C! W# V/ K/ o8 l6 [. _. w
/************************** Variable Definitions *****************************/
( S# n: A! l8 g! c% I$ P/*
# q0 @7 ~: ^% ~3 U1 T: \7 ~ * Device instance definitions. K1 ~# j# b% S3 M, x& H# \
*/
' R% V& v0 K6 \/ w( r* DXAxiDma AxiDma;
* @8 X/ U. w- e8 x; E6 J* R& P
* Z3 e {9 d3 q/ H. U: ?5 M/*" v$ n- e+ ]! }* s4 ? Q
* Buffer for transmit packet. Must be 32-bit aligned to be used by DMA.
7 e% _5 F. [" L/ o* i */
$ Q& z. Y( F: B* h' j- S; ku32 *Packet = (u32 *) TX_BUFFER_BASE;. d6 C# D1 N( @7 V ?! z" Z
9 h7 X4 Y) s) F
/*****************************************************************************/$ D$ J8 _ ~5 ]$ @* M! ]
/**8 O3 E/ ] ?* P& S# G: _5 W! @+ b
** p' s4 A; X9 A# E% c5 w* y
* Main function( P3 e3 o" R2 ^4 Y4 a
*# X. O5 i( O3 k7 J, H6 c# M; Z: j/ I8 s
* This function is the main entry of the tests on DMA core. It sets up
- d/ J+ d* H$ ^2 k& D T- ^" t* DMA engine to be ready to receive and send packets, then a packet is0 q' ^. p: w! ]( r2 a3 J a0 P
* transmitted and will be verified after it is received via the DMA loopback
0 R. [( }+ o6 q7 e7 x- m6 e/ b" X* widget.6 q$ t% S+ ^$ A; @+ i! J. q9 k) y
*7 e' y) A/ C) J9 ]( f6 v* p
* @param None
^1 r1 p6 S/ T: a# B% E*
" P4 g* K. Q" p/ p6 e* @return# @! ~6 z; T7 L
* - XST_SUCCESS if test passes/ H. i# u% a9 i g6 d
* - XST_FAILURE if test fails.
: M8 |1 e9 Y6 S& y6 H*
9 F' ^7 p! A! H. r* @note None.
# |0 K8 B" d: T9 x" q: j$ Q*
9 I" ^" P, f3 t" V/ W******************************************************************************/
: g, E2 x4 s, ]. }$ oint main(void)
9 d% J5 J: e- Z2 W2 T{
1 z. R) V9 m3 Z; x int Status;4 X+ y0 ^4 \& B
XAxiDma_Config *Config;" B; ^& G c- I+ x
4 \" ^' q0 G! R: K5 G#if defined(XPAR_UARTNS550_0_BASEADDR)
/ P) o/ Q- f7 c2 P8 H; T
* ?- C0 m5 j# O Uart550_Setup();
1 t% Q$ U- A% ^' Y9 |+ u3 |
' h' e$ O/ R* s) A- l4 ~" c I& V#endif
! S9 `. h. E- B2 r4 d1 w" _2 ~1 R: n$ o( {9 y2 R
xil_printf("\r\n--- Entering main() --- \r\n");; j6 |+ B$ y, a% W, S
& H( R |0 U& S" K8 d#ifdef __aarch64__
3 j* N4 H" b G Xil_SetTlbAttributes(TX_BD_SPACE_BASE, MARK_UNCACHEABLE);
0 ?' Y) d4 X0 j0 b$ J Xil_SetTlbAttributes(RX_BD_SPACE_BASE, MARK_UNCACHEABLE);" r& D1 A% Q9 m" ?% I* A
#endif
$ {# ?& L* Z9 w* _) Y" m. `! v
: A0 M9 \3 k q2 L9 d9 S Config = XAxiDma_LookupConfig(DMA_DEV_ID);
5 m6 T+ T8 g' z/ T+ @; v if (!Config) {
, w- u' e' X2 u: g xil_printf("No config found for %d\r\n", DMA_DEV_ID);# H% b) @ b) l' ^
) {% w1 R1 i' r
return XST_FAILURE;7 c: b- E7 b( C+ E/ I
}) `9 [' i3 |1 `: Q
2 M: \1 N! v3 r" I. S! b3 i6 d/ ^
/* Initialize DMA engine */
0 X! l, E! C7 y: k, f& v' J Status = XAxiDma_CfgInitialize(&AxiDma, Config);
/ U9 @: h8 `& R/ a if (Status != XST_SUCCESS) {
: ^+ S b# K& ], _ xil_printf("Initialization failed %d\r\n", Status);
R" r5 Y4 h2 i7 O% g) O5 V; E ^& V9 A return XST_FAILURE;) A3 M' `% U% @, I( ?
}1 {+ @' r6 m- i% G- @- H2 Z
: | P5 X2 o% d if(!XAxiDma_HasSg(&AxiDma)) {
7 z# g$ E6 M* j! R xil_printf("Device configured as Simple mode \r\n");9 F2 ?# T9 E9 S* H1 X( B
- S" H* ~$ u: ]' p3 _% R return XST_FAILURE;
) _/ l* {$ c. Y, Z. A }) e% O: o s9 j9 U' b, E. o
3 d* O0 a7 Q) R* @% i
Status = TxSetup(&AxiDma);# ^: ?- z7 o1 n3 k; U( d, f
if (Status != XST_SUCCESS) {
- n+ y7 ~3 A6 H5 q return XST_FAILURE;
* [9 P6 m( P, }6 S! i/ c- j# ~) j }
7 _5 z+ w$ W% A6 }6 e$ Y- j- ], J+ z0 u5 k8 E" |7 {3 v; {
Status = RxSetup(&AxiDma);
: M; ^2 H& B% d if (Status != XST_SUCCESS) {
! R& ^& ~% a7 h9 Q7 s return XST_FAILURE;
/ k8 h* w i) }& L# @ }" j- h/ ~. v6 S4 d( v( b0 L
. D$ i' w) x4 H5 p" e# E /* Send a packet */4 m3 H& E/ q8 K
Status = SendPacket(&AxiDma); k9 C) u+ N) F1 l/ O. u6 a
if (Status != XST_SUCCESS) {8 N, s2 }8 }% r5 b- x
return XST_FAILURE;
b8 a+ }: y5 x# S8 G }% W+ j( m( T6 }; |
4 D' K* O$ s3 P$ ~ /* Check DMA transfer result */2 r9 W; K ]% I* I; Z7 i: M. ]
Status = CheckDmaResult(&AxiDma);' w1 @2 e, H( }' ~7 }- I1 s
5 K# m, U! ?3 }7 I if (Status != XST_SUCCESS) {! g5 q1 y6 m/ n# e8 n( C
xil_printf("AXI DMA SG Polling Example Failed\r\n");
1 w# r; M. t# Q& N' E8 [; e return XST_FAILURE;
+ @& F+ m o+ J. i }
% ~" h! Q- F+ x9 N, l. \4 G9 c2 ^
xil_printf("Successfully ran AXI DMA SG Polling Example\r\n");4 p& n: }" p" `& B# x$ i2 U; G
xil_printf("--- Exiting main() --- \r\n");
' |0 t' c4 ^% q& @( M E/ k; N
7 H$ O3 n- \& }9 A' o4 Y& v. j if (Status != XST_SUCCESS) {! c9 Z: ]) V( l) p
return XST_FAILURE;
8 x5 g( F9 _/ T- F/ w6 H6 ` }1 i4 d# f: v- c( W) z# }4 {2 {' x% j
+ D: Y9 o8 L; Z' ? return XST_SUCCESS;
4 `4 z, T' }1 N! \2 I}6 F4 a0 q3 [. i( A. R F
7 Y2 F' x- D [' C; D! E! Z#if defined(XPAR_UARTNS550_0_BASEADDR)
; K3 I8 F0 X1 D' }! [/*****************************************************************************/ B+ u+ i; ?2 ]' t' e" k
/*3 P/ v8 v# T9 y
*
1 D( N/ q1 o! U# c" B* Uart16550 setup routine, need to set baudrate to 9600, and data bits to 8
9 I( w/ p) \$ E6 z8 \! z6 U*5 L9 j- F) D4 I
* @param None* H+ I2 x0 x* M8 J: u3 @7 y
*4 k+ ~6 y7 D' S* k8 A
* @return None
9 \. z' ]5 b6 v, D8 T7 T& }*6 d2 W0 K! d ~5 B w2 e3 y+ F
* @note None.
4 `7 _) T8 L q& C*
- Y8 ?5 ]3 a* S******************************************************************************/) D, A( C; G, a2 n: z) k3 \
static void Uart550_Setup(void)! G% q$ A" d" [6 t! c. ~
{
, R$ I- a' q# T0 |6 G1 d K. c+ _% A) _/ f4 {) y" l% c* Q& ~, N
/* Set the baudrate to be predictable' j( m, ?( X9 J- _% f; Y' U- X
*/
/ D3 ~* e4 L' E5 G5 i5 @ XUartNs550_SetBaud(XPAR_UARTNS550_0_BASEADDR, E W. z) X( w6 B+ P
XPAR_XUARTNS550_CLOCK_HZ, 9600);# v; Z) c( X; O: w, A, d
' b f0 W0 W9 I6 h, \% F XUartNs550_SetLineControlReg(XPAR_UARTNS550_0_BASEADDR,
/ \, @8 ~6 F; U XUN_LCR_8_DATA_BITS);
8 A! _# z+ r r0 {$ w& q' A1 y! T7 R; R5 _- z
}
6 t/ M, H3 u* b* P#endif
7 p" r" G5 Q" I3 n1 ^- a$ ^$ K2 s( N# m! z5 M% t
/*****************************************************************************/
9 K, n2 X" C: H& `/** @: J2 e* H. o" `4 n5 C4 p% h7 p
*
5 ~ ^& d. ?& T) w9 n* This function sets up RX channel of the DMA engine to be ready for packet
9 j* i; V H; H9 j( R* reception
4 Y& ~# `' ]3 b2 s: u*
+ S1 V) Y6 Z" p* @param AxiDmaInstPtr is the pointer to the instance of the DMA engine.
+ I+ y* l) `; n$ u: s3 B$ e*- ]# ^# s8 b& h8 L2 N
* @return XST_SUCCESS if the setup is successful, XST_FAILURE otherwise.
& m' y+ g# ^5 B*
1 K; d$ R# \$ ^: j; W0 \* @note None.9 @2 x3 v {& D2 y2 {! T
*
9 }2 h5 u9 `. ?8 d******************************************************************************/
% N8 P: t) o; O2 G6 w9 Q; istatic int RxSetup(XAxiDma * AxiDmaInstPtr)# N% c9 P/ L9 n; c3 s/ V+ T. j
{
: t1 y( A$ W" k4 l XAxiDma_BdRing *RxRingPtr;& a, [; o1 r# x9 g
int Delay = 0;
' X8 C* b& O0 D$ p% T3 @1 P7 l int Coalesce = 1;
: z/ H2 Z; r4 ^1 X2 k int Status;* L) N3 L6 ], a y* Y
XAxiDma_Bd BdTemplate;, y4 P t6 ~, I3 i' e# [
XAxiDma_Bd *BdPtr;
4 F v; t- u2 K2 R% v, K) @ XAxiDma_Bd *BdCurPtr;( O0 i! y# s6 l0 t
u32 BdCount;
/ ^. D, {1 r2 ]# |( r& B& z3 p u32 FreeBdCount;
4 L' ^# d3 |6 G* G; a; z' ]* I% k UINTPTR RxBufferPtr;
: K8 n( N6 Q- Y int Index;* O. D$ v$ S# K! v2 Y/ _
- A8 g9 |; a. |5 Z2 Z RxRingPtr = XAxiDma_GetRxRing(&AxiDma);8 u Q4 E' A7 C5 W: @
( q1 ~, k6 Z1 u9 b* o /* Disable all RX interrupts before RxBD space setup */
* f) U0 M- L' L: w ]9 I* @& v, B( D& w. k
XAxiDma_BdRingIntDisable(RxRingPtr, XAXIDMA_IRQ_ALL_MASK);
& o/ |/ f+ M8 D1 H6 h* g3 d: U
8 i2 D$ N S8 J% O- d$ N4 j /* Set delay and coalescing */
$ T* R; x- d8 R2 k$ G9 p" K XAxiDma_BdRingSetCoalesce(RxRingPtr, Coalesce, Delay);
2 S* ]6 s) z% V \6 D' t4 T, m/ i* X. x3 {; m( u- J; \1 G$ r
/* Setup Rx BD space */2 T# O% [; J' D1 u1 y: \* |3 t& z
BdCount = XAxiDma_BdRingCntCalc(XAXIDMA_BD_MINIMUM_ALIGNMENT,; O5 g9 ]2 E7 T' @$ Y
RX_BD_SPACE_HIGH - RX_BD_SPACE_BASE + 1);
& A o' _& O5 `8 q
# C" K0 v/ z3 }, ?& S, Z Status = XAxiDma_BdRingCreate(RxRingPtr, RX_BD_SPACE_BASE,
$ W8 j0 I2 b3 D! R2 W RX_BD_SPACE_BASE,
$ B: @7 b6 b" V# @3 K- l XAXIDMA_BD_MINIMUM_ALIGNMENT, BdCount);
6 c/ `8 G+ \6 t: S
7 X/ m# p1 o9 @ if (Status != XST_SUCCESS) {. i& d( X0 ?, P# }/ B9 P
xil_printf("RX create BD ring failed %d\r\n", Status);
6 P& i, w( G- {& F0 t I) J- s' C+ D6 Z
return XST_FAILURE;" }1 ~. s' {. t% W6 W6 ?
}
/ L. }1 x/ B$ N3 a* f9 Q
6 R$ p- J0 ]6 k$ B! g& B /*
0 b" |4 v/ i( f# d7 q * Setup an all-zero BD as the template for the Rx channel.' o; @7 }7 A6 j" ~
*/# E2 l$ [ R* m5 o! _
XAxiDma_BdClear(&BdTemplate);% x4 X( z( g& J, Y; ?1 V
' l7 c+ G+ f: N- ? Status = XAxiDma_BdRingClone(RxRingPtr, &BdTemplate);! N) s, ~+ u, o( R
if (Status != XST_SUCCESS) {7 e8 s! Y3 `/ D
xil_printf("RX clone BD failed %d\r\n", Status);
( M" U: J y$ u- `# X3 a9 Q; B4 [9 k8 a5 e" I
return XST_FAILURE;6 Z+ `2 O) G7 J+ `/ j# Q
}
5 s2 V6 ?$ R2 I. r3 T3 w; _2 t8 c1 [" A- D- Y! _! P- E
/* Attach buffers to RxBD ring so we are ready to receive packets */9 t! a1 U: ^' O# W+ k1 {9 b4 f" J
! ]# n+ k* M$ h1 ?/ b
FreeBdCount = XAxiDma_BdRingGetFreeCnt(RxRingPtr);9 _! {! `, B# ]4 x* f; y% J
; o9 k# q% B. t( R. p Status = XAxiDma_BdRingAlloc(RxRingPtr, FreeBdCount, &BdPtr);
- I/ M4 E' ^% \* T1 c( g if (Status != XST_SUCCESS) {- L* x$ z9 I+ q# k) u* V
xil_printf("RX alloc BD failed %d\r\n", Status);
3 z- a# p( i5 l) i; V+ ]7 u
2 `$ J* V5 r4 W7 C! L8 |# X6 s return XST_FAILURE;
0 |; D( N C: {, K; L7 m1 i9 U# | }
. X! T* L5 ~9 D$ T/ ?& |: S. }' s( F2 R+ h" n, n" }$ A( `
BdCurPtr = BdPtr;
3 J, |: c) ^, C$ g" w RxBufferPtr = RX_BUFFER_BASE;
+ u2 ? P! C1 H1 G% ]5 v8 e for (Index = 0; Index < FreeBdCount; Index++) {) n; R( q2 ?- Y& p3 H6 P! E0 x. A& [5 A9 H
Status = XAxiDma_BdSetBufAddr(BdCurPtr, RxBufferPtr);8 J0 [9 e% ?& u' D- R" |) B
4 g# ^% S7 |( u if (Status != XST_SUCCESS) {
! v% N) [5 v. l( g6 m xil_printf("Set buffer addr %x on BD %x failed %d\r\n",6 w/ Q5 I& w( R
(unsigned int)RxBufferPtr,
! k/ t- z, H4 d (UINTPTR)BdCurPtr, Status); z6 E% a8 x7 B! S5 v" K
1 r2 u$ Q% x2 E& y. w7 v
return XST_FAILURE;
3 b# x) o! W/ J _/ Z5 E }
. ]5 A, J& [" T2 K6 J$ P8 X3 D
: e, t) G$ B- E. D* e& P# n Status = XAxiDma_BdSetLength(BdCurPtr, MAX_PKT_LEN,
" [% C- H2 `6 T/ f8 O6 ?$ ~ RxRingPtr->MaxTransferLen);! H1 G$ S( G; c9 p6 ]" D+ N7 i
if (Status != XST_SUCCESS) {
/ Z7 Z S0 \ N" b S1 w xil_printf("Rx set length %d on BD %x failed %d\r\n",
4 D6 g; t: `( y7 _ MAX_PKT_LEN, (UINTPTR)BdCurPtr, Status);
. G3 ~* F% e6 f5 R L: b/ o4 ]# _6 ^. H2 |( S+ I: |8 c- \" l
return XST_FAILURE;
7 j: ~' x. M8 M7 I }4 ~: H+ d% j7 |2 O, c' J
. W4 Y; V5 i4 V5 i1 d
/* Receive BDs do not need to set anything for the control
$ s( i/ [6 l' j7 I2 c * The hardware will set the SOF/EOF bits per stream status
; _* Z& _3 w0 C" _ e6 a */# A! e% J1 B7 x, }9 }* Z
XAxiDma_BdSetCtrl(BdCurPtr, 0);
6 u7 b. x8 {9 O4 K6 L XAxiDma_BdSetId(BdCurPtr, RxBufferPtr);$ l* c) Y+ C( b- l
# }: c6 U# k6 I c7 e) X
RxBufferPtr += MAX_PKT_LEN;8 H+ Z! k! F$ e! C" e, M, O b+ T: C7 {
BdCurPtr = (XAxiDma_Bd *)XAxiDma_BdRingNext(RxRingPtr, BdCurPtr);
; j. Q" O4 D" ]) B, _( a% a& G7 P4 B }8 W0 [& Z. W( g
' `4 t: a0 E* Z, j; J$ x1 v /* Clear the receive buffer, so we can verify data
( u0 F: s s5 J. Z; u */, ?, M. ~3 t, a- X
memset((void *)RX_BUFFER_BASE, 0, MAX_PKT_LEN);
5 x3 G3 @# q% x- Y( a+ r/ l
) ]8 ]8 @0 b- _- \1 Z Status = XAxiDma_BdRingToHw(RxRingPtr, FreeBdCount,
7 y4 |% E; \* l {! R+ v" T" N BdPtr);
. }8 |, u2 }' C5 q$ I if (Status != XST_SUCCESS) {9 [* d3 Y: \9 c* ?, `
xil_printf("RX submit hw failed %d\r\n", Status);
9 r, b2 ~* f: i+ A* z2 x; b
3 d# n2 {7 Y6 [, o# V& [ _) S return XST_FAILURE;
% j# N1 `+ t) |. ~ }, S7 N9 g+ B5 g) Z6 l& D |
- N. R: o) c. t; H! N4 k /* Start RX DMA channel */
6 ^1 h6 P3 E4 M& ]0 z* Z Status = XAxiDma_BdRingStart(RxRingPtr);- ^' D# i' A( ]( i; }
if (Status != XST_SUCCESS) {
5 c* _5 ^' x. l9 q' p7 o {, X Y xil_printf("RX start hw failed %d\r\n", Status);7 L; H5 P- F6 @$ Y
3 t/ C. P0 O4 W& N& y9 S) V return XST_FAILURE;. ?: I9 @/ o6 Y
}3 p& f+ i) u6 u. q
/ V& X' J6 W M& J& q
return XST_SUCCESS;
% q2 I, _! j6 L( E}
: [- R; q9 l f8 L, {9 K: Z6 a
/ j9 x+ g. ^5 } \' ?/*****************************************************************************/
# c6 }: G+ [; P6 W' e& v/**
! a$ N& S0 x- [; Y" i*
+ u. \8 p4 {8 o: q* This function sets up the TX channel of a DMA engine to be ready for packet) f8 z5 e6 E* t4 u. b2 ?
* transmission% B6 V# e8 O9 \' f, z
*
! H+ y$ X8 i a2 _. o* @param AxiDmaInstPtr is the instance pointer to the DMA engine.
; M( s2 e; H3 ?5 {5 u$ | Y*
* I' k5 X( {( b* @return XST_SUCCESS if the setup is successful, XST_FAILURE otherwise.- n1 W0 ], s% u' t/ q
*
1 t$ Y3 R! D Q$ Y* @note None.
4 C6 h9 M% N6 Y*
2 [7 P3 q, u; s( f. H3 V/ [9 \******************************************************************************/$ e! H) {, {+ \9 F1 o$ O
static int TxSetup(XAxiDma * AxiDmaInstPtr)
3 j& w' m' f6 y; [{
9 T- Q! D, g# o, {% L! l) g XAxiDma_BdRing *TxRingPtr;: ^0 u& ]' z _; W' W
XAxiDma_Bd BdTemplate;
# R. |1 \$ v0 L( X8 e- T& L5 c* y int Delay = 0;
8 U s( b S' h% m int Coalesce = 1;+ a5 A" h9 E1 N: n c
int Status;
6 d5 F! ~8 r% v8 X( B' Z u32 BdCount;8 m2 N U- a! J0 K# {
) [. ]$ E) e3 Q0 Y6 z TxRingPtr = XAxiDma_GetTxRing(&AxiDma);& H) p3 X% ~; Z
; r9 v$ j7 F/ v! f [3 r
/* Disable all TX interrupts before TxBD space setup */+ ~9 d5 y8 ?$ P3 i
/ ]( G8 l' ]: ]* i# ?( ?4 l7 a( e% q
XAxiDma_BdRingIntDisable(TxRingPtr, XAXIDMA_IRQ_ALL_MASK);
: i% g3 [3 M+ y7 J" V8 ^! F1 t: j" t7 e
/* Set TX delay and coalesce */
5 m' }# r& ^% o$ b3 J0 A; U# P XAxiDma_BdRingSetCoalesce(TxRingPtr, Coalesce, Delay);
7 V3 a' i, |# g: y# @
. d5 b5 P4 v( ~$ N2 h /* Setup TxBD space */+ D7 i) I) X" m% e9 P! y2 m
BdCount = XAxiDma_BdRingCntCalc(XAXIDMA_BD_MINIMUM_ALIGNMENT,
: z/ k7 h+ s" ^! T# ~% E TX_BD_SPACE_HIGH - TX_BD_SPACE_BASE + 1);+ _4 v4 k; d9 R2 E: g" h" P
% ]. H% ?. W2 T5 a) K
Status = XAxiDma_BdRingCreate(TxRingPtr, TX_BD_SPACE_BASE,
; B; T o% V4 m7 W TX_BD_SPACE_BASE, R; e, {, a5 M5 X: B( T
XAXIDMA_BD_MINIMUM_ALIGNMENT, BdCount);% M3 b4 e3 w+ f9 H8 y
if (Status != XST_SUCCESS) {' _ K$ @" f. Q/ h4 a, }+ {9 Z- Q
xil_printf("failed create BD ring in txsetup\r\n");
. S& X* F% e z. l* {- ~* B% c. L3 V( }0 S% w
return XST_FAILURE;: ?2 r9 x$ d/ U- S$ i
}! Z6 l* X3 j* d( z% l
$ b0 P; t8 v) a* t9 x /*; M3 n X" i5 w |1 O; z+ X
* We create an all-zero BD as the template.) a8 M$ \7 T- C
*/
8 l1 j9 z- @% y% a' ` XAxiDma_BdClear(&BdTemplate);* Q2 p, K" u0 w& Z
2 h& k7 X( L; t6 P1 T2 H/ | Status = XAxiDma_BdRingClone(TxRingPtr, &BdTemplate);
- W8 ^- b$ U- {0 i if (Status != XST_SUCCESS) {) |' [& L s6 a
xil_printf("failed bdring clone in txsetup %d\r\n", Status);
, e/ g; A1 q" g0 a' v ] U7 ]* c
return XST_FAILURE;0 _8 G+ r; b2 s" [( S
}
; E3 M/ L5 M7 z
% q: l3 V4 S) B& P /* Start the TX channel */
$ I$ P5 Q, _3 q% W; } }2 v: `' h0 h Status = XAxiDma_BdRingStart(TxRingPtr);7 l/ [/ ?; ], z# }+ \2 i8 n
if (Status != XST_SUCCESS) {2 _, {6 i1 _! i" }- ?$ B
xil_printf("failed start bdring txsetup %d\r\n", Status);$ z- D) G: y9 m
) W& x( `0 T1 ?4 | A; a
return XST_FAILURE;) o/ i8 O0 V5 E. x# b. w# I2 y
}/ Z: Q% l1 v# S" M
7 e0 s1 b. d+ z U3 W
return XST_SUCCESS;
# m! P0 |* ], a4 H! A}
! ?' ]2 e8 j! Q. U: h# B- A& D5 y1 J# _. y* E2 e; q- Z3 x& W
/*****************************************************************************/& m3 E4 N; v- b+ n4 `
/**
5 Z* j6 O5 ?4 d: S% r0 v: @*
8 s( _$ c' C o* This function transmits one packet non-blockingly through the DMA engine.. N% d( a- T, ^5 M9 H7 ^0 D2 r
*# j- ~ f& u+ W L3 Y, O. f
* @param AxiDmaInstPtr points to the DMA engine instance1 [. B4 n8 |9 I B G
*
* M( N, ^( c9 L8 q% Q* @return - XST_SUCCESS if the DMA accepts the packet successfully,
. z# t2 |' n4 D9 f" ~6 g) ^) W* - XST_FAILURE otherwise.
: v/ Y! Q3 j7 H& t$ u, n" g*
" L" P. \, P2 W$ T+ G* @note None.0 t) J9 y1 ^# O6 q o
*
) j* v O3 E8 A. q- f* s******************************************************************************/
/ V$ ~( X/ i+ z: xstatic int SendPacket(XAxiDma * AxiDmaInstPtr); l7 U& Q' p9 k0 ~5 o, F# p& {2 ]9 U
{# z5 [3 l R" R8 L& `+ p
XAxiDma_BdRing *TxRingPtr;2 c: _ W/ q( d0 _! c1 p8 V
u8 *TxPacket;0 e! @) w% Z. u9 K
u8 Value;1 j5 t- g' H) I3 ?+ m2 |
XAxiDma_Bd *BdPtr;
" w, M: J0 A7 b4 F0 A int Status;
" \$ a& R: a% p- J- h4 b int Index;
5 ^: f( I8 h0 s- K+ d, M0 Q# e) p" h$ {+ N+ t/ f
TxRingPtr = XAxiDma_GetTxRing(AxiDmaInstPtr);* u0 ]$ c: y1 a5 y- b( _$ J
* G/ {/ X; ~4 Z* A5 _/ A' s4 a5 T /* Create pattern in the packet to transmit */: P: l" S; Q+ {& B
TxPacket = (u8 *) Packet;; D/ |: F9 N4 u, ?; z
0 X6 x+ y3 M) X
Value = TEST_START_VALUE;0 t& I* S4 u( @' o( r
" y1 h# o. K2 R/ B- T
for(Index = 0; Index < MAX_PKT_LEN; Index ++) {
- E( k2 j( P& v. } TxPacket[Index] = Value;5 p- h, g6 A1 \5 [0 \! A9 e! y
+ F! S+ b9 }; p6 ~ Value = (Value + 1) & 0xFF;
/ T: J" H$ S$ l7 m, X4 _ }0 b& ^9 H1 r$ v
; H# T7 N9 w! a7 u; \7 {. E
/* Flush the SrcBuffer before the DMA transfer, in case the Data Cache
8 t5 y" l# d0 s) l$ n- b8 X& ? * is enabled- p; y! l9 e7 C- R( m+ @3 r
*/0 H8 u' i; V4 Y u0 E" K2 Z$ e
Xil_DCacheFlushRange((UINTPTR)TxPacket, MAX_PKT_LEN);1 V) ]) Y' ?" X- k
#ifdef __aarch64__
" Y( U* W: q: z8 v7 p Xil_DCacheFlushRange((UINTPTR)RX_BUFFER_BASE, MAX_PKT_LEN);" Z% F9 K: A: m& {# l
#endif, w2 _; j* x7 L. _
: p3 ^# q- m# |0 e# y3 R) @5 l3 _: H* _% M/ d7 b" ?
/* Allocate a BD */2 E1 u" X5 d" o& H% Q* z
Status = XAxiDma_BdRingAlloc(TxRingPtr, 1, &BdPtr);, n, G1 O1 S9 k/ {$ i4 ]
if (Status != XST_SUCCESS) {
. X4 E" q. U8 B' p! F9 k4 h- A return XST_FAILURE;
! m( f) s$ X: N) l! k- Y: a8 _8 Y$ w }6 L) c) ]( Y3 k& m B' F' \9 q
7 y9 Y1 b% F' i! Q$ k
/* Set up the BD using the information of the packet to transmit */
3 ?3 v- x3 \7 Z' l! g Status = XAxiDma_BdSetBufAddr(BdPtr, (UINTPTR) Packet);
- u% G" k( N0 q' d if (Status != XST_SUCCESS) {
2 _- [/ D* j0 n; o7 W. ~2 s( n; P% E xil_printf("Tx set buffer addr %x on BD %x failed %d\r\n",
& W T* T% ^1 G) y (UINTPTR)Packet, (UINTPTR)BdPtr, Status);
( d s5 ^& r n' J, D* N# H- m' l7 b( U; U: ^$ Q! M: U- `' f
return XST_FAILURE;# W1 E2 i9 H6 s" T
}
, C# G y' M; q% j; H; \- F
# i5 S2 L; w5 q Status = XAxiDma_BdSetLength(BdPtr, MAX_PKT_LEN,
; D' T+ h" E0 E" \4 Q; D/ u TxRingPtr->MaxTransferLen);
8 h, u4 y ~: ^- j if (Status != XST_SUCCESS) {% }, @1 C7 F% z B) u z- N9 t
xil_printf("Tx set length %d on BD %x failed %d\r\n",
/ P& \; V" E/ ^4 e0 j6 u MAX_PKT_LEN, (UINTPTR)BdPtr, Status);
/ S1 L R- k1 U9 K4 [. K! L$ m2 N/ c! M. g C# g5 S
return XST_FAILURE;% b; p/ ]: `/ o
}' D5 M- Z1 B* d m" \! |
' q* R/ s, o- f6 _$ y
#if (XPAR_AXIDMA_0_SG_INCLUDE_STSCNTRL_STRM == 1)
+ } Y* n: ]! I$ g Status = XAxiDma_BdSetAppWord(BdPtr,5 [/ D! A7 s: r* [. }% F; @8 j
XAXIDMA_LAST_APPWORD, MAX_PKT_LEN);
6 i- h3 J) B' Y! e! a8 Q, j3 U% f( p7 l ] H
/* If Set app length failed, it is not fatal$ a: K! u- x \8 k5 ~# Y
*/ ?# q2 [3 ?$ z5 c1 s- g& Z. {
if (Status != XST_SUCCESS) {2 ]0 M: J% j" c; y4 ~
xil_printf("Set app word failed with %d\r\n", Status);
9 ]) O: L8 u; ?1 @; s- ]3 g }2 p+ w6 z3 ~$ X3 w
#endif$ `+ [8 v% [+ Q4 H. F
; p6 m! m' o3 W' m; c$ T3 a/ d /* For single packet, both SOF and EOF are to be set' ?, E7 D5 u' j: u: ^( U
*/
5 q3 P1 D6 i6 W# Z* Z XAxiDma_BdSetCtrl(BdPtr, XAXIDMA_BD_CTRL_TXEOF_MASK |5 _( A2 F2 j/ G0 [+ U6 a& N+ `
XAXIDMA_BD_CTRL_TXSOF_MASK);+ }. G- F8 y2 S& \8 K' e* Z0 H! ]
' W3 c0 ?4 S- \* ` XAxiDma_BdSetId(BdPtr, (UINTPTR)Packet); ?; @5 J# p4 Y. l% i1 w. w
* a8 J. D6 |. X) [# k /* Give the BD to DMA to kick off the transmission. */8 l9 R) m& \& v8 |
Status = XAxiDma_BdRingToHw(TxRingPtr, 1, BdPtr);
" i- f- B U& L3 G2 R. I# z if (Status != XST_SUCCESS) {5 a" p" a+ s& r0 c' O8 C- E' J
xil_printf("to hw failed %d\r\n", Status);
! j8 N8 j7 U6 O8 B return XST_FAILURE;: c9 W3 e5 Z! |. P( u0 W
}- s. S1 [+ g! P- S& k; G
4 x1 n# T; c, }: w% X5 ^" I& \2 P
) @6 |0 v7 B, P) v! x! R+ ~& {* o3 l( e
return XST_SUCCESS;
: k: o9 @- O, T. k6 q% a0 y}3 D: @. O X- y6 i. o! O+ K
! k9 C/ K0 y& l
/*****************************************************************************/
* Y; a8 R( n: l# c. E/** [1 c( e1 Z% N; r" C# m
*
+ q5 [$ S" `' u. U0 ~# |) O1 n* This function checks data buffer after the DMA transfer is finished.
5 P5 t. w' K& i6 {* p, k2 l2 P*) ^# ^8 ^6 U' B. J. a
* @param None/ ^! U# z5 d/ L' u$ T3 f
*
) I$ I* g$ L8 t: Q* @return - XST_SUCCESS if validation is successful2 I, D; n: } P
* - XST_FAILURE if validation is failure. Z; v1 ^. r8 d- Z! L# y
*
M% f# B* W9 t; u' z* @note None.
7 M* l5 r+ a) `! b. Q0 j: C4 n*$ i# m' o( t4 n
******************************************************************************/- R, D( o# {& K) H
static int CheckData(void)' G$ E, j- \& _$ m5 n: T
{
: b5 S. S8 ], a/ z8 w u8 *RxPacket;- g( |; ?% \3 i& V* u
int Index = 0;
& U7 O- j3 h+ j6 j u8 Value;- J* j) r: \* r6 K
" M4 d; C* {; p- Z/ N* z
% s' n6 V5 B' p a
RxPacket = (u8 *) RX_BUFFER_BASE;
* x( |7 F0 D6 Q Value = TEST_START_VALUE; n- |/ }) T; A) v6 F. {$ q
+ S$ \1 `9 _) F4 o, t" g$ a
/* Invalidate the DestBuffer before receiving the data, in case the
) g& g% y; T5 q, Y8 T6 N * Data Cache is enabled, t; }2 k% y! {: `2 z
*/
% Q* Y9 {8 M" s e& V#ifndef __aarch64__9 a {5 u- V' ?6 a; _" J
Xil_DCacheInvalidateRange((UINTPTR)RxPacket, MAX_PKT_LEN);- w' r3 @) ^3 u& x, \
#endif
3 z3 Y% } x4 ^. ~1 e# V5 i5 x! |, I8 R5 {
for(Index = 0; Index < MAX_PKT_LEN; Index++) {- i" a# u0 I9 m' C
if (RxPacket[Index] != Value) {, [) ~* k; M4 a8 }2 d8 ~. y
xil_printf("Data error %d: %x/%x\r\n",
! k* A( h1 h' D% Q/ f* _0 U Index, (unsigned int)RxPacket[Index],# U; @+ N% R8 w: L) t5 l' e: ?
(unsigned int)Value);' d0 X/ m$ h) ^7 ~
6 ~2 ]( j' u$ K
return XST_FAILURE;
; W9 o8 r! e! h }+ |8 H3 F5 C; Y
Value = (Value + 1) & 0xFF;& i3 S8 c" x3 {4 P0 `, Q
}
" k+ j# n. {9 O8 ~4 a2 T% G# h3 E% i( y! j. [, m
return XST_SUCCESS;
2 E0 y, m7 u3 z% `$ A0 B}( ^+ v5 y; L" r7 l2 h# s: ~8 M
5 m" ]$ P' z. [; \/*****************************************************************************/7 s+ P% d% d( s1 N& W3 F
/**
( H. _7 N8 c/ C ? u, h*3 x6 _ g, {. z1 D" y* a) k7 C+ V
* This function waits until the DMA transaction is finished, checks data,# o8 H+ A0 `- P/ [0 p% ]
* and cleans up.8 n9 _3 e2 y; Z% K' g1 J
*: C( c2 Q# R$ `' ]8 n1 A) n' X
* @param None9 a1 @( }/ N0 g) d, E* O
*
; R. U" b' ]+ X+ M% X* @return - XST_SUCCESS if DMA transfer is successful and data is correct,2 m; u' n" N# j( @2 u H$ ~
* - XST_FAILURE if fails.6 t% x# f4 f7 @8 ]1 X! S8 T
*
, Q% L, M: v- i f0 [) ]- I* @note None.0 d+ e7 T6 d) }& j
*
2 n0 I% @$ D+ R) c******************************************************************************/
W0 k# o& w! ]static int CheckDmaResult(XAxiDma * AxiDmaInstPtr)- m8 d6 o l( n3 T
{4 Y2 a! N1 `5 S
XAxiDma_BdRing *TxRingPtr;) u' q0 K+ q- u' r+ ~8 w8 c
XAxiDma_BdRing *RxRingPtr;' T% w) d( q$ v" Y0 H) B* ?
XAxiDma_Bd *BdPtr;
$ |- U: {2 q) C0 o1 m `2 | int ProcessedBdCount;
7 {! [7 C/ K# i% K+ K2 Y7 l* n int FreeBdCount;
6 E3 g, i5 y2 }% J0 l4 b1 l int Status;% h6 f; B- A4 l5 }$ s j
" D7 F. x7 Y6 M) y# n TxRingPtr = XAxiDma_GetTxRing(AxiDmaInstPtr);5 n2 _- ~4 L. D, \
RxRingPtr = XAxiDma_GetRxRing(AxiDmaInstPtr);1 R$ B5 ]1 I9 Y# J
8 g- o. J/ [( ~$ p Z /* Wait until the one BD TX transaction is done */% X1 U2 M2 C+ H4 L
while ((ProcessedBdCount = XAxiDma_BdRingFromHw(TxRingPtr,
* j6 o2 S r8 P; {1 i; T5 { XAXIDMA_ALL_BDS,7 V/ {3 L2 B( n7 m: }3 t0 f
&BdPtr)) == 0) {) E$ N1 @, x$ c" x$ {' d) P$ |* ^3 h
}- X: B6 A3 t6 P- M3 _* K* h2 Z
' f& e+ \5 \2 r, A' J7 \7 G /* Free all processed TX BDs for future transmission */7 f5 I3 Q/ _( d8 \& o
Status = XAxiDma_BdRingFree(TxRingPtr, ProcessedBdCount, BdPtr);
8 p0 v+ u L# g2 J1 w9 d if (Status != XST_SUCCESS) {* p3 I& n3 Q# N+ q8 \
xil_printf("Failed to free %d tx BDs %d\r\n", z: e1 w% F" V* J. s
ProcessedBdCount, Status);
# V' o- s2 l1 V7 z# x* q" x return XST_FAILURE;
6 P& c' [4 L4 X7 A! s/ ^ }* A N, D9 L# M8 X+ T6 |0 {
4 X( w C, K* k1 K: ] D /* Wait until the data has been received by the Rx channel */. u$ A" |& a7 F8 ^
while ((ProcessedBdCount = XAxiDma_BdRingFromHw(RxRingPtr,# h1 ]- d9 q' `
XAXIDMA_ALL_BDS,0 E( h4 E: @. M$ w5 ?5 H9 V9 q2 [
&BdPtr)) == 0) {+ @/ Q' o6 z( m! k% M8 B
}
* |1 \- f Y3 S' Y' M# O2 N+ p1 e2 s9 w
/* Check received data */: l8 m7 D/ h3 R& _- P
if (CheckData() != XST_SUCCESS) {& J) G4 I, F, p4 t, }
, K! E P7 O+ o return XST_FAILURE;
' u6 f" V, N) Z4 I4 H: w7 c: ] }
( p: }4 y" k; a# U, d( j6 o, b
3 |4 W+ L' A! y9 z7 {& ^ /* Free all processed RX BDs for future transmission */7 f9 }; U7 D Y4 S
Status = XAxiDma_BdRingFree(RxRingPtr, ProcessedBdCount, BdPtr);5 S/ G; D8 X: G1 {5 p
if (Status != XST_SUCCESS) {% c) W1 j5 f& A; ?8 Q
xil_printf("Failed to free %d rx BDs %d\r\n",7 A8 Z1 T7 C- ]& C) ^& ]
ProcessedBdCount, Status);# G0 w. l3 Y/ Q* O8 @8 j
return XST_FAILURE;) e0 U$ C; y( ~$ _1 S
}" Z* e( f7 j& t/ X
0 I) R* ]" ?1 n+ `- J3 m# a
/* Return processed BDs to RX channel so we are ready to receive new" V% H) V+ s, |- d
* packets:
) ?, Q( f+ y- @8 c. Q e * - Allocate all free RX BDs
( i' j* k# C( u2 l * - Pass the BDs to RX channel W5 J! E- B3 n, m
*/
/ r3 Q Q' p4 p$ Z1 @1 Z+ e FreeBdCount = XAxiDma_BdRingGetFreeCnt(RxRingPtr);( `* E v$ ]8 `( ?8 k
Status = XAxiDma_BdRingAlloc(RxRingPtr, FreeBdCount, &BdPtr);
, A. I4 W8 J3 t5 v# V if (Status != XST_SUCCESS) {
- c! C$ g5 K9 p' g& T# \1 D xil_printf("bd alloc failed\r\n");
; `3 ^' s# k# f4 _/ n& W$ f5 t return XST_FAILURE;
! L+ A+ v/ u/ c j/ l. ^1 q }5 w, m' q: P4 ^: [" a
$ ~; |( P& U5 a8 S- y Status = XAxiDma_BdRingToHw(RxRingPtr, FreeBdCount, BdPtr);
" N# A X5 k" n+ X6 U if (Status != XST_SUCCESS) {
5 f4 |, p% @ I7 b- h4 R xil_printf("Submit %d rx BDs failed %d\r\n", FreeBdCount, Status);0 g3 _4 R/ N% e E+ ]) s0 @" D
return XST_FAILURE;
/ y" B2 R) g+ G% I6 v% j( R i5 w }0 e" l' {9 ^4 i0 I# v' F8 j4 ^
+ }7 r. q/ h0 f return XST_SUCCESS;
& V, e2 i& {* S0 t; r" y3 w! B}/ ~/ s, S* Q" Q( z1 }4 o$ F
6 k# {1 e& |/ }( R$ c9 b0 ~
" Q ?* M) C, x- [ r* `# Z. F |
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