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xaxidma_example_sg_poll.txt
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源码; [ D0 S4 Z5 {5 }" W o0 D& {! [: _6 R
: p- x- {. h! X/******************************************************************************
' N- ]9 R5 D. e! D( }$ v4 ]9 v*$ Z! L$ D" j. v
* Copyright (C) 2010 - 2018 Xilinx, Inc. All rights reserved.3 G! [# I. ] T# N. ?7 v, j7 p: q; H
*
4 |2 Z% ]+ G7 S% i! P* Permission is hereby granted, free of charge, to any person obtaining a copy
1 V; \3 z4 z- \( B) q* of this software and associated documentation files (the "Software"), to deal2 A9 J# R- {9 i$ ?
* in the Software without restriction, including without limitation the rights u. l* ]8 q3 {- L
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell1 Y& _1 a; _$ Y
* copies of the Software, and to permit persons to whom the Software is
; A# p; E& v E5 U! N* furnished to do so, subject to the following conditions:' w+ V1 C3 C* x
*8 ] x4 m! c' s$ ^$ c
* The above copyright notice and this permission notice shall be included in) O! r) m. w# ~! z$ ]
* all copies or substantial portions of the Software.
! E9 v3 N P+ I# ?*. r3 y3 i+ f( Y9 E5 j
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR2 { Y7 u% c9 f! M5 J
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,4 d$ l2 v) a; h F0 w, f
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
/ r- @& H# q$ ?( E/ @2 X6 m! X- q* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
6 b6 ~, i: o# y0 h/ D. Q- D* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF' q! r* R5 a8 {. e; p8 A
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0 K& a t) q# O) O' n& A* SOFTWARE.3 x+ K% c5 A/ Q7 r) p1 V) b7 R& Q
*6 |$ t0 \* P0 A& d# l- ~; ~
* Except as contained in this notice, the name of the Xilinx shall not be used
8 A4 ` A, x: Y$ m9 c* in advertising or otherwise to promote the sale, use or other dealings in+ Y% x; g) H& z Y
* this Software without prior written authorization from Xilinx.
$ l: i& g( h d7 t6 t6 S*) z7 u1 ^( e" y8 S2 q4 b! [/ q, R' d
******************************************************************************/, U5 ?- [5 [' t1 ~) s2 x$ k7 \! R
/*****************************************************************************/' M& ^8 T4 ~8 G$ E* `* _8 u
/**$ M k. ?1 `8 I3 `) F4 q
*& n% c9 l: o; m1 e" P1 K1 ~
* @file xaxidma_example_sg_poll.c0 F+ Q$ H1 L* i& O+ Z! T. ~# K; f8 ]
*
% y) d m( T0 F! ]! ]" ?6 x6 Z * This file demonstrates how to use the xaxidma driver on the Xilinx AXI
, c( h( i+ o0 E `# B H3 f2 g * DMA core (AXIDMA) to transfer packets in polling mode when the AXIDMA
- H1 _1 G3 R# v; _ * core is configured in Scatter Gather Mode.; R( C J% m4 Y$ P
*) d& i y9 A, ^" ]( E
* This code assumes a loopback hardware widget is connected to the AXI DMA1 `: R: H" p% L0 u/ e* U
* core for data packet loopback.
/ M7 R0 s$ a8 c ] *# k9 W8 r; W$ n, v
* To see the debug print, you need a Uart16550 or uartlite in your system,
( [$ N' u5 J0 J& s) j8 c * and please set "-DDEBUG" in your compiler options. You need to rebuild your
/ i/ x/ n# c! a, ~& u' M* b * software executable.
$ n8 o) x/ r! _/ C) U/ W; ~# S* w *
" b4 o/ c' A* D * Make sure that MEMORY_BASE is defined properly as per the HW system. The0 m( u3 S3 F. G# o+ D
* h/w system built in Area mode has a maximum DDR memory limit of 64MB. In- Z0 @6 v/ S3 e
* throughput mode, it is 512MB. These limits are need to ensured for/ k6 A( T! ?7 |2 t
* proper operation of this code.
) y" p, j, l3 y/ U$ s: m& ` ** R8 v& `2 M/ y* p/ H- d' `
*
, P: c, h& U6 l: @/ l * <pre>9 f; B- _. l" F
* MODIFICATION HISTORY:
, I4 F0 a- F- E" N3 @/ O *
7 D4 H5 q1 I( G+ L * Ver Who Date Changes
0 w/ @+ c1 R3 h( a" E1 C+ @3 @4 g * ----- ---- -------- -------------------------------------------------------" D; w6 Z6 T$ \
* 1.00a jz 05/17/10 First release
, N& w' |; K, C9 e! S2 g * 2.00a jz 08/10/10 Second release, added in xaxidma_g.c, xaxidma_sinit.c,7 N7 h. N: X3 v1 ]' y; j z
* updated tcl file, added xaxidma_porting_guide.h, removed
2 N2 L' j9 Z! A6 g4 h% T7 n * workaround for endianness* J& k r, E$ q0 g
* 4.00a rkv 02/22/11 Name of the file has been changed for naming consistency
3 H' Q, T$ x4 ^8 ]) X5 O: j' e * Added interrupt support for ARM.
- c/ K! a* G, ^5 [ * 5.00a srt 03/05/12 Added Flushing and Invalidation of Caches to fix CRs
0 R3 N* |7 Z0 s. O; g7 V, t * 648103, 648701.
3 ? {& G* b/ F/ r * Added V7 DDR Base Address to fix CR 649405.& p) e- L% l; ^* W
* 6.00a srt 03/27/12 Changed API calls to support MCDMA driver.
) s/ D) i9 W0 x8 j0 ?! g% C+ `1 N * 7.00a srt 06/18/12 API calls are reverted back for backward compatibility.1 f+ ?) g" O9 t1 k
* 7.01a srt 11/02/12 Buffer sizes (Tx and Rx) are modified to meet maximum( C( I* w% S6 W5 P8 J1 @* b
* DDR memory limit of the h/w system built with Area mode3 P) L, Y- m. h0 ~8 H/ ]" E# J4 L
* 7.02a srt 03/01/13 Updated DDR base address for IPI designs (CR 703656).4 }( w; E o; B* [( y3 ?2 Q
* 9.1 adk 01/07/16 Updated DDR base address for Ultrascale (CR 799532) and+ |0 v- \3 V: k! u
* removed the defines for S6/V6.4 c" c6 x. U/ w( g+ j& D4 X2 S
* 9.2 vak 15/04/16 Fixed compilation warnings in th example
& _$ q* r& {* }3 }7 m+ r * 9.3 ms 01/23/17 Modified xil_printf statement in main function to* ^$ Z# P" l' I+ p! y- V f2 c r
* ensure that "Successfully ran" and "Failed" strings are! |3 M! J4 Z" m& H! Q+ H
* available in all examples. This is a fix for CR-965028.% n+ c/ \4 c0 F. c- g
* </pre>3 [: K& O" M) W# k) w( u7 n
*" C7 j! K; ]2 W9 c4 g6 Q5 T6 G6 }
* ***************************************************************************$ V9 m! r! K1 h$ r$ m
*/. m. U r0 G1 ^; L. o
/***************************** Include Files *********************************/
. ]6 j* _* ?6 W, o) O+ H$ P#include "xaxidma.h": ^, y- K# B2 Z- N: e3 ~6 `5 h6 Q/ v- \
#include "xparameters.h"
2 S, P1 w; p, A* C* k/ v [" {#include "xdebug.h"
& w% r: p7 j) s/ i+ u' O
) ?4 t; {6 e `6 [; Q5 ?. C) f#ifdef __aarch64__
4 T }7 S0 F K% h+ l#include "xil_mmu.h". Q. w; ?. e$ f1 x5 R$ M7 g8 Z: g+ K
#endif- L, g# x# y' H0 s6 J5 w
* E2 G j. E7 G" p x
#if defined(XPAR_UARTNS550_0_BASEADDR)
/ P/ Q3 X- q+ t#include "xuartns550_l.h" /* to use uartns550 */) t8 q! a" I6 R8 O
#endif
1 p9 \4 ~& r% S. @$ T. ]' f; f0 `5 @
#if (!defined(DEBUG))( m9 Q7 Y( ^0 y; z- |: z; }% H
extern void xil_printf(const char *format, ...);
U6 `! K3 x7 J% t. I: L5 e6 q#endif* o7 _6 L9 k6 s+ t
$ z9 \( z7 S, j, D
/******************** Constant Definitions **********************************/
+ k* g1 x5 @8 s1 w2 x/ ^
- R n- x3 K- W$ A6 P/*
' f% w: @* b8 z6 J' d' } * Device hardware build related constants.
2 J+ s$ T( s1 v" `$ h */
$ R5 ]1 V! H+ ~ H* M' Q$ s0 S
6 u5 @+ a2 P; |. M" ?#define DMA_DEV_ID XPAR_AXIDMA_0_DEVICE_ID6 L1 [. e. }) L/ Z7 ^* r9 {
9 p J! v" w" I! n9 }! O2 ~4 M6 r#ifdef XPAR_AXI_7SDDR_0_S_AXI_BASEADDR* T1 ?5 J7 j, i/ ]
#define DDR_BASE_ADDR XPAR_AXI_7SDDR_0_S_AXI_BASEADDR
3 R) a3 o6 i% {* m#elif XPAR_MIG7SERIES_0_BASEADDR9 i$ Y2 R$ n6 Q2 l3 V+ L0 e0 m+ J
#define DDR_BASE_ADDR XPAR_MIG7SERIES_0_BASEADDR# r& ^& t1 y$ ?
#elif XPAR_MIG_0_BASEADDR
! ?" {! p7 F* n, G#define DDR_BASE_ADDR XPAR_MIG_0_BASEADDR
1 R- {( E) n6 o& V#elif XPAR_PSU_DDR_0_S_AXI_BASEADDR" y1 x p# z/ ^& B0 H I! |8 l# ]% q
#define DDR_BASE_ADDR XPAR_PSU_DDR_0_S_AXI_BASEADDR( H1 H( g7 a0 ~
#endif, E+ Z f0 V5 q( \- o
0 Y$ C* T7 S% d6 q#ifndef DDR_BASE_ADDR8 L( e3 D, J S8 B, R
#warning CHECK FOR THE VALID DDR ADDRESS IN XPARAMETERS.H, \6 k: ?; q$ x1 t
DEFAULT SET TO 0x01000000
+ @. w0 D1 h8 ?! F#define MEM_BASE_ADDR 0x01000000
4 [0 h4 P: w* |7 j# v" g# K* a4 O7 L% j#else+ c2 w' Z4 a# A+ [ U
#define MEM_BASE_ADDR (DDR_BASE_ADDR + 0x1000000)
* H; {8 R$ {# a- Z' ?$ W" B7 }#endif
: ^$ n6 H t1 _1 M1 s. J! b' g& q0 W/ K8 m
#define TX_BD_SPACE_BASE (MEM_BASE_ADDR)( n/ q8 [4 t! D/ b' C% M
#define TX_BD_SPACE_HIGH (MEM_BASE_ADDR + 0x00000FFF)
1 B/ ~- N8 Y" D#define RX_BD_SPACE_BASE (MEM_BASE_ADDR + 0x00001000)+ i( a1 t4 K7 N0 {
#define RX_BD_SPACE_HIGH (MEM_BASE_ADDR + 0x00001FFF)
: r$ J% A/ x* v* { [ z" p#define TX_BUFFER_BASE (MEM_BASE_ADDR + 0x00100000)3 D# D+ U2 q- U' B
#define RX_BUFFER_BASE (MEM_BASE_ADDR + 0x00300000)9 o% H9 g8 R' Q' `+ ?0 D, U
#define RX_BUFFER_HIGH (MEM_BASE_ADDR + 0x004FFFFF)- e/ [) I3 F6 a7 ?* P/ J2 E- q
) \ [$ G4 }% E6 ~
: p5 K! G |, d, _" W#define MAX_PKT_LEN 0x20
3 n3 ~# }* n% E, ? |#define MARK_UNCACHEABLE 0x701) k1 ]3 [1 ?2 D
; Y% g0 q; \9 e9 r
#define TEST_START_VALUE 0xC/ d1 @( C( S+ J$ w
$ k0 V( b" j' \4 N6 k/**************************** Type Definitions *******************************/
5 i3 \, W2 w1 O% v" ?+ C3 s* c
* V/ E. t+ {# l! y- X
1 N3 }) H. P) |) Y1 u3 w" W/ [, M+ C/***************** Macros (Inline Functions) Definitions *********************/
& k+ T$ H& ^+ Z0 x+ x
5 m+ B1 J& F% g9 ~. a% t' p8 S; l' m, e/ `' l- B$ I( ]2 v& j3 c/ _
/************************** Function Prototypes ******************************/7 ]/ V- J9 [& F2 v, |3 e' o& J
#if defined(XPAR_UARTNS550_0_BASEADDR)- ~, f. w# @% O
static void Uart550_Setup(void);+ k1 [1 {# k2 r& g: u. i0 I! ^
#endif; ^9 d$ s. F5 w9 D
2 s0 H9 c1 s: k9 A5 zstatic int RxSetup(XAxiDma * AxiDmaInstPtr);
" d, S/ {/ c/ [, _) J% ~; ]9 ostatic int TxSetup(XAxiDma * AxiDmaInstPtr);: w7 S* [+ z) `) c$ c7 D. T
static int SendPacket(XAxiDma * AxiDmaInstPtr);- q0 G. h% o+ l5 y5 D) b! f
static int CheckData(void);
& R& G! N g, r7 `static int CheckDmaResult(XAxiDma * AxiDmaInstPtr);' ], @3 p' q) p6 R3 l
+ T6 q' j1 A, T
/************************** Variable Definitions *****************************/& S! f* M8 P' e0 Y! ^8 u' x
/*
) d4 k3 x0 y: M% M& x' z! {4 Y * Device instance definitions
3 P! i' Y) X* B: L& }7 C */# O: d# Q% k: y- k
XAxiDma AxiDma;
7 n4 C; n* P ?8 S2 j
& z1 ]' n0 t& _. _4 C6 p2 m/*
S$ q9 Y" J% G% P * Buffer for transmit packet. Must be 32-bit aligned to be used by DMA.' E1 }& Z% f; @9 H L: j
*/
4 J' A* c+ j7 N5 x. iu32 *Packet = (u32 *) TX_BUFFER_BASE;
1 P3 }& E6 S) O; h8 C2 R; x4 k; R5 U
/*****************************************************************************/
) }! a! S o/ d/**. [( s6 R" e: X$ s+ U
*
) _5 x: f1 B9 [8 ]: ^6 u+ d* Main function
$ V$ S0 u; [$ k( Y) g*( H( z8 N) q" O0 e T' b
* This function is the main entry of the tests on DMA core. It sets up
# r4 `+ e/ H. ]+ y! @( K2 V* DMA engine to be ready to receive and send packets, then a packet is3 v' Q: r5 z" J4 O! c! Y
* transmitted and will be verified after it is received via the DMA loopback6 S% @& {3 q% t5 z+ n. ~
* widget.; p4 D7 I. n7 R( s9 M
*
( ~& f- N& W1 ^0 t+ C& r* @param None# I0 }" i9 y* e( G6 `) T
*
* t5 `2 b s' T& i! Q3 B* @return. T$ o8 o: c- C- }1 y) d
* - XST_SUCCESS if test passes
3 `1 O5 w) F6 Q6 i( E' C* - XST_FAILURE if test fails.
; }# ~( p/ k& R7 q- l E. W*
2 H, n) I7 t/ e; J0 m3 ]* @note None." }: N+ Q: C5 @# n9 B1 B# H
*
% M; l0 o! J; @" k******************************************************************************/
) H- E% m, ~. t3 m# j% r5 @int main(void)* [( e) U$ N3 Q; l h! p0 k, g
{
7 F0 r" _2 F0 y( o& q r& z. P6 n4 m int Status;! E8 a# g2 t Y
XAxiDma_Config *Config;
! \: U! N% U$ v8 b6 |
, Q5 D9 P9 O% G+ V. I#if defined(XPAR_UARTNS550_0_BASEADDR)
$ k- \% n% u7 w& t5 B+ \+ K8 b* R; ~. e& a" O: \8 y
Uart550_Setup();
7 o# k2 I; I: q$ M
2 K' Y7 ?9 t" _! u8 |#endif0 O/ C h L4 D& B
% a# l9 p8 z8 d* e7 g
xil_printf("\r\n--- Entering main() --- \r\n");
& M$ Q# \) g; b# k) ?. t$ J @8 s2 T6 h* [; M% q
#ifdef __aarch64__
; L9 h& Z0 p9 Z8 |) h2 j; o) ^( x" t Xil_SetTlbAttributes(TX_BD_SPACE_BASE, MARK_UNCACHEABLE);" k9 a9 h' ^4 ^
Xil_SetTlbAttributes(RX_BD_SPACE_BASE, MARK_UNCACHEABLE);5 k4 c- A1 u @/ T& s: p; G3 e. `) {
#endif
& P- T! }5 t6 N( L- e* T0 z$ e7 j' w+ q' [( N4 I0 o3 z
Config = XAxiDma_LookupConfig(DMA_DEV_ID);
# t$ ^2 [( n5 D3 Z if (!Config) {
; Y0 t! \0 f) }* _$ I. m xil_printf("No config found for %d\r\n", DMA_DEV_ID);
0 B+ U+ k6 K3 l# i& j9 V$ _ } y& I2 s, ~
return XST_FAILURE;: C2 q! d6 h, o4 F: ~6 K" ~$ x8 A3 S
}3 @0 L/ ?2 ?4 b2 k! O
! Z: u: N5 |: O3 ^$ \' T! g
/* Initialize DMA engine */
( T! J2 ^9 B F$ K Status = XAxiDma_CfgInitialize(&AxiDma, Config);% S1 \: v: W% J
if (Status != XST_SUCCESS) {
; N6 s, i% q- [6 v1 {# y xil_printf("Initialization failed %d\r\n", Status);( M# c% c1 A+ m3 B
return XST_FAILURE;
2 L7 _( }# J: G0 s }% ]1 W3 @4 W3 p
6 x4 m4 ~& p# W3 j
if(!XAxiDma_HasSg(&AxiDma)) {6 {7 I9 g- B1 }% \( g1 ]4 L& C2 ?
xil_printf("Device configured as Simple mode \r\n");
+ r3 b- U' d7 O$ c" Y; O6 S
$ U1 V7 M+ I9 @4 R7 _ return XST_FAILURE;
K$ P: d# T- H }
/ M$ o+ t4 U7 G, f+ c
u- B o; ?7 ^; I Status = TxSetup(&AxiDma);* E3 G9 \/ O5 S8 w1 w9 i; w8 v, F
if (Status != XST_SUCCESS) {
7 i/ @4 i5 g# H/ J' O' W return XST_FAILURE;
) ^& w; S# t. O8 |% V }
9 [; g$ s( B0 Z1 T1 o' |5 ?% R4 I7 m+ V& G+ N$ ~" b
Status = RxSetup(&AxiDma);
! a, D8 b) F" o8 B3 _5 A% g if (Status != XST_SUCCESS) {3 c X6 `) R- W; \
return XST_FAILURE;8 T6 v7 E) x* K8 J; x
}
) ^% \: L7 X# F: M2 ?; H. V8 T& H
' J) | [ u# _: J /* Send a packet */
( R; s5 D( J4 n/ Z/ D' w* f5 K2 e* Y Status = SendPacket(&AxiDma);
' Y- b$ B2 B' r/ ]8 } if (Status != XST_SUCCESS) {
5 X1 l! c7 l+ b$ O O2 ^/ @4 g return XST_FAILURE;6 U7 y! F$ G# p7 c* `7 p
}; g: R( u( y$ h$ x# P. ?
* t, L7 C3 F, M" J! k
/* Check DMA transfer result */5 ?! _& Q$ m* d3 e+ A5 L, @
Status = CheckDmaResult(&AxiDma);* n! Z( G% `. x
3 d* s2 g+ H0 l: |* I4 J1 r$ |
if (Status != XST_SUCCESS) {# n8 i7 P# K+ S( V1 J8 z- c$ [, N6 z/ g
xil_printf("AXI DMA SG Polling Example Failed\r\n");; E6 A0 c7 o0 L( e. B
return XST_FAILURE;; B1 M( Z; `" J- e6 b1 @
}5 @& R/ k; l6 T* `0 \3 a
$ {8 s; h. O/ V; b% { xil_printf("Successfully ran AXI DMA SG Polling Example\r\n");
: K/ F7 N; j* y B xil_printf("--- Exiting main() --- \r\n");
6 i# l8 D- ~9 Z: K$ Q$ h5 s8 ?$ K( V
if (Status != XST_SUCCESS) {7 |5 r- U" V% E/ x0 y, }8 R/ \1 x
return XST_FAILURE;9 G0 }. }" C, r' y! }! U( m2 u
}
2 k# ~+ m S4 V9 F( }; V$ y3 H. a4 X8 V* @# b
return XST_SUCCESS;
1 g: U4 V) Z/ H" D* ~7 o}" [2 L: G( M' Z
* B0 w! E( w) F& @5 { c
#if defined(XPAR_UARTNS550_0_BASEADDR) v9 [: r+ ^! t p; @
/*****************************************************************************/
/ r3 C3 x6 D+ O+ F0 R8 z2 @* c# O/*( @# K: D5 d5 z) z. A7 \& ^) B! k8 z+ F+ d+ W
*# W" d0 X2 @6 M
* Uart16550 setup routine, need to set baudrate to 9600, and data bits to 82 m2 a* K6 c/ z" |4 R. |
*
8 X' ?5 G' p' v* @param None# d9 w+ c n- z/ V8 W- M) |3 L3 w t
*1 K0 t- z- [1 l% y# Y: D- f
* @return None/ f7 g1 Q; f$ W
*3 h4 ~! A1 f/ j0 @4 u& }% M5 w
* @note None.2 W5 V8 D! ^$ ^4 u% F. l0 }
*
* f x U. i0 ~2 w& ^3 I9 g******************************************************************************/
& Z# A: ]& ?$ ^8 k+ l9 w' i' d) pstatic void Uart550_Setup(void)/ I9 x7 B+ [4 w! a& g1 n5 \$ z
{
. u5 o( x2 [ H! B: |- l3 q
( Z Q& @) I0 e$ N9 z3 h# r /* Set the baudrate to be predictable* D+ V: f5 n3 R, H1 X( ~
*/6 v9 n2 d I3 U1 M
XUartNs550_SetBaud(XPAR_UARTNS550_0_BASEADDR,
9 J5 O6 m3 A) Y$ Z6 f, P$ K* N XPAR_XUARTNS550_CLOCK_HZ, 9600);
! [3 e* O o* x' j* k$ d3 G0 A$ {- {/ s4 i
XUartNs550_SetLineControlReg(XPAR_UARTNS550_0_BASEADDR,
5 \8 p, I0 [; R5 y8 n9 P( q XUN_LCR_8_DATA_BITS);
2 J% k( U$ L/ } Z9 u: Q( x( H2 \6 I
+ r+ r3 G+ ~" m, p. l/ R}
7 U) p; o1 B' ?; w4 X& j) a#endif, q$ G6 [0 k- u( K5 [$ n
5 w7 F; j: t+ c A2 `
/*****************************************************************************/
2 c s8 L! v' n6 u/**# ?0 X8 h6 @1 R
*
/ e$ Y2 T+ q6 T3 x( `- M! m" T0 [* This function sets up RX channel of the DMA engine to be ready for packet
' x0 ]* V/ w( x* j* reception7 {4 P n9 r( Z& v, v
*- h2 b9 a" q5 i( q3 o3 w4 H0 L# m+ `
* @param AxiDmaInstPtr is the pointer to the instance of the DMA engine.
% I$ v7 Z& N. N* q4 O*6 g3 a$ x, Y U. z( N5 k% s
* @return XST_SUCCESS if the setup is successful, XST_FAILURE otherwise.' |7 d. ]* U# p# P" v' \/ L
* w5 b5 S% x2 P; n! \
* @note None.
- h+ b* x; o# `1 @. L* [- `*
) p0 ^9 ?+ [; T' U; F! @******************************************************************************/
, b4 k, K+ `7 f6 pstatic int RxSetup(XAxiDma * AxiDmaInstPtr); O( x3 z2 D2 @3 T) S
{: L4 P9 F$ P' O; G; e
XAxiDma_BdRing *RxRingPtr;
2 [1 `6 x# s+ A. A7 Q! H$ ] int Delay = 0;
9 Y- T4 \* M+ c8 Z, B! K, }, P int Coalesce = 1;
?% c4 V/ K( O5 R int Status;% {. N$ `. v. N
XAxiDma_Bd BdTemplate;
9 M# J3 `; I0 c N) b" x$ `1 W XAxiDma_Bd *BdPtr;5 ~3 J/ g9 h- k1 ?$ c/ i0 [0 B* X1 a
XAxiDma_Bd *BdCurPtr;
) a1 V T! P! A; O- i u32 BdCount;
6 F+ A: w; P1 q u32 FreeBdCount;) A$ o) C2 ]/ X9 C b6 w( }
UINTPTR RxBufferPtr;! @5 D+ L4 w) a- ` {# X+ K2 G
int Index;
, }+ i2 E0 F) C* ^
2 {5 Q( r2 A% p1 a, M RxRingPtr = XAxiDma_GetRxRing(&AxiDma);# G( g2 f8 u& [; A6 o
1 e0 Z7 |$ ~( w3 a: M7 h( @/ \ /* Disable all RX interrupts before RxBD space setup */+ t8 h! p! r) j0 ]# e! {. Q: ?6 b! u
+ i6 {: F0 E* z
XAxiDma_BdRingIntDisable(RxRingPtr, XAXIDMA_IRQ_ALL_MASK); a9 \" G+ A2 i& ?. f( k3 z
2 T( B+ r7 `/ @* t! ^ /* Set delay and coalescing */
7 i' `; C+ i# }3 M XAxiDma_BdRingSetCoalesce(RxRingPtr, Coalesce, Delay);
8 I" m9 J9 v) M5 `4 P9 q; X9 E
0 h: W3 t; Y U6 G /* Setup Rx BD space */# C, @6 f9 u; W) t) U
BdCount = XAxiDma_BdRingCntCalc(XAXIDMA_BD_MINIMUM_ALIGNMENT,* d& ]/ W! x; i1 ?
RX_BD_SPACE_HIGH - RX_BD_SPACE_BASE + 1);7 H: ?% V5 {; E
8 V m6 o+ C/ r: ]
Status = XAxiDma_BdRingCreate(RxRingPtr, RX_BD_SPACE_BASE,- w4 c) F; `- u% K) h Z
RX_BD_SPACE_BASE,$ m" T+ s K5 j4 p" r5 K
XAXIDMA_BD_MINIMUM_ALIGNMENT, BdCount);! I# n& ]0 F7 [
* T( j6 n( u- ~0 R- q, N if (Status != XST_SUCCESS) {4 B# S+ o5 b: V" e
xil_printf("RX create BD ring failed %d\r\n", Status);
% ?' [( [( J% m5 L1 s2 |- D6 g' E& K$ s) r
return XST_FAILURE;
3 ~) y( l) F# W3 [0 T* o }
1 ]0 s2 q* e o$ l; V
; T+ f( R) M, M$ @ /*
. M' o4 i6 r3 \. P0 E6 {& P6 Y& S; R- Z- T * Setup an all-zero BD as the template for the Rx channel.% S1 M' |: p# \; l/ _( S: U9 w
*/
1 V- }4 l4 B5 n2 x5 r! q4 n# b; I XAxiDma_BdClear(&BdTemplate);
" v8 y) w* c! k O9 y7 n+ G' p1 y) x+ f
Status = XAxiDma_BdRingClone(RxRingPtr, &BdTemplate);# Q7 F; Z- X3 M' I# c
if (Status != XST_SUCCESS) {
7 G$ d2 ]* _( u/ S xil_printf("RX clone BD failed %d\r\n", Status);. Y' G; g$ r1 D9 D) x, [( |
8 h1 T1 j! l c% n
return XST_FAILURE;5 U" t* f" l( N. b$ S5 t1 N
}$ m9 B L2 J0 M4 h5 p0 F$ B: y( T
( r) W1 R1 V- Q /* Attach buffers to RxBD ring so we are ready to receive packets */) t( c" M8 m" C6 Q4 w
8 `% z8 `1 }- C' s* P& J
FreeBdCount = XAxiDma_BdRingGetFreeCnt(RxRingPtr);/ E" Q* Q0 A. m V% O
4 U3 R- S( W3 F& M4 _: Y T Status = XAxiDma_BdRingAlloc(RxRingPtr, FreeBdCount, &BdPtr);: W: G" }, J9 T9 U( v
if (Status != XST_SUCCESS) {6 R& x) T) g% ]
xil_printf("RX alloc BD failed %d\r\n", Status);2 e; m8 S/ g# {% y# t9 ?
9 [0 v. D J/ a3 M" O% ]& \
return XST_FAILURE;
9 \ b+ V0 y6 L& u. C/ T& } }
. ~7 \3 V( N7 M0 p
( W& F& a8 i% w BdCurPtr = BdPtr;
( i; B, i0 b0 M2 f2 M RxBufferPtr = RX_BUFFER_BASE;5 ^, W, t# a- g! I
for (Index = 0; Index < FreeBdCount; Index++) {0 k2 w+ G' H. v7 y; b
Status = XAxiDma_BdSetBufAddr(BdCurPtr, RxBufferPtr);
7 e# m9 b0 ]' p- x+ ~- \5 |/ A4 @* G0 y) A
if (Status != XST_SUCCESS) {% {) Q: N5 z8 d1 e4 x
xil_printf("Set buffer addr %x on BD %x failed %d\r\n",& v% U- d9 R0 F) ?4 Q- M
(unsigned int)RxBufferPtr,
) V4 N% A& P, E7 t) I( x (UINTPTR)BdCurPtr, Status);4 A; X! H. o* u' C$ b
2 B; u5 _! h M) ]" r% }) @! c6 W return XST_FAILURE;
- Q; u' F7 j7 h' U1 C }% I; `' I' M0 O' f5 v& I6 H5 {
/ t$ v y# [+ \. O0 ~. l+ y Status = XAxiDma_BdSetLength(BdCurPtr, MAX_PKT_LEN, B$ w2 L" m5 m- d/ {5 P( h% J! I
RxRingPtr->MaxTransferLen);7 w0 O7 v% c5 w; X/ T
if (Status != XST_SUCCESS) {0 T% A5 {( l4 J) u0 y* x
xil_printf("Rx set length %d on BD %x failed %d\r\n",/ @- s* B# n- Q5 I( ~1 ]9 b
MAX_PKT_LEN, (UINTPTR)BdCurPtr, Status);$ k( } i, }8 }' ?
( b; s+ l7 @+ F return XST_FAILURE; p3 n0 U& j+ p; Y% ?" A9 Q; o% B
}0 V9 C# S" i! x& a" G4 c0 J
3 h v2 m- N' a5 N2 p
/* Receive BDs do not need to set anything for the control
( L, Q& y8 l, T9 U9 y' ` * The hardware will set the SOF/EOF bits per stream status
# ?) W5 Z3 J# ^/ |0 p. d/ b */% P) u+ N) q! b/ X& o
XAxiDma_BdSetCtrl(BdCurPtr, 0);( m* S h! W8 y' t5 b1 i1 Q- U% j
XAxiDma_BdSetId(BdCurPtr, RxBufferPtr);4 \) F' v2 b4 z! r, l
; Y/ V7 y* _7 K) Q
RxBufferPtr += MAX_PKT_LEN;' n8 m1 l. c: ]' n
BdCurPtr = (XAxiDma_Bd *)XAxiDma_BdRingNext(RxRingPtr, BdCurPtr);
* W) P/ @# f! T, M }
* ?* l# B0 ~% N- G) W3 R2 ?, T0 @9 u4 j+ E
/* Clear the receive buffer, so we can verify data4 q' L l& {- P# l6 D+ S
*/
2 l/ X# ^+ a$ e) r! ^& q1 x- { memset((void *)RX_BUFFER_BASE, 0, MAX_PKT_LEN);$ j9 z5 z4 f8 e5 P, Q
7 |5 `* s4 Q7 _9 Q/ }
Status = XAxiDma_BdRingToHw(RxRingPtr, FreeBdCount,% \ @! A+ O: u, ^) X
BdPtr);
, G- u1 K, Z3 {5 A if (Status != XST_SUCCESS) {/ V z. j' T4 p) M, b) A% c
xil_printf("RX submit hw failed %d\r\n", Status);0 V- ~1 ~6 Z& K! F* G- X- T* S) G
# x( j! @* N, O9 ]- y5 i return XST_FAILURE;
" N! }; T* W9 y, o1 i5 j }: x3 y, d1 \% a7 t% I2 L
& G5 g8 u* c- v# y2 Z0 D
/* Start RX DMA channel */" t% \1 @- V n7 _" |
Status = XAxiDma_BdRingStart(RxRingPtr);
2 N! \ i5 J( G' Z3 y/ C- ] if (Status != XST_SUCCESS) {
% Y! m! Z' W& I8 g- x xil_printf("RX start hw failed %d\r\n", Status);3 O8 \9 Z4 e- ^
/ T2 U0 b s5 h }, }& } F1 w# A
return XST_FAILURE;
1 N4 g5 f; ^8 ]# r' w }) i) j( |& Z& W7 o0 q
`, P$ D$ y% ^6 @. O' m( b return XST_SUCCESS;
9 J9 t k, _) Z# {6 z}$ R2 e0 i W, {. c7 f' D9 j' s
) F" w( T: _* Z) c/ _/ H/*****************************************************************************/
4 o4 b+ m! X4 {- V+ f- l3 g+ g/**
- \3 U1 x) }1 B/ X" K+ _1 u*5 h( \ Z. N: @. }* C3 b0 Q9 R
* This function sets up the TX channel of a DMA engine to be ready for packet
6 c2 \5 ]9 ~8 q' U" y* B# B. A( H0 Q* transmission+ q' U! W' H0 U) P* t* K
*
- @0 O6 _+ g T+ S9 f: Q* @param AxiDmaInstPtr is the instance pointer to the DMA engine.' t( l; f' r& w0 Q2 h3 T! p% f
*
0 e1 O; r# C6 i: a5 h9 U- U* @return XST_SUCCESS if the setup is successful, XST_FAILURE otherwise.
2 S, x) P$ J+ K% a/ G7 T {) K0 M1 ^9 t, Y*
" x* o, O; B9 @1 f5 w5 b4 h* @note None.
/ o* M! P: @3 W5 ~& |( a*! ^3 c' ^. D. k3 Y% [# y
******************************************************************************/4 u1 D& W) J' Y2 w) v; e" T h
static int TxSetup(XAxiDma * AxiDmaInstPtr)+ `" m$ o$ e2 v0 z
{5 j2 w0 P( l$ P0 q: C7 p5 _
XAxiDma_BdRing *TxRingPtr;
$ J7 P$ P" A( ^) ]0 T S XAxiDma_Bd BdTemplate;
* `( p1 L0 Q9 g2 x! m7 @ int Delay = 0;( N. a8 i, W) `
int Coalesce = 1;
0 e' q, s" z" s/ k9 ~ int Status;3 H( y( _. I) [4 z: J8 W
u32 BdCount;) S5 ~+ k& C% Z) F) K5 n
" }7 n- W4 C4 f, _3 {$ r$ c) `4 E
TxRingPtr = XAxiDma_GetTxRing(&AxiDma);
5 z1 n$ Z. x1 y" q+ D% T; H1 [6 H6 R0 [
/* Disable all TX interrupts before TxBD space setup */% ]; W8 B! y: F6 p; ?+ r
\! E1 B4 K; p XAxiDma_BdRingIntDisable(TxRingPtr, XAXIDMA_IRQ_ALL_MASK);! j; h! D! y* M% H |# z
0 z2 {9 e4 P+ a6 ~- x
/* Set TX delay and coalesce */
& r* q! S. J( _/ Q) ~7 C XAxiDma_BdRingSetCoalesce(TxRingPtr, Coalesce, Delay);1 t) U" D0 S! w& J6 r
, L$ L: G# y4 }6 |' ?( ?3 `" A /* Setup TxBD space */9 d# a" m+ f8 [" {- |) V
BdCount = XAxiDma_BdRingCntCalc(XAXIDMA_BD_MINIMUM_ALIGNMENT,
/ s' _- k$ l- C: h- F& O& T) i( @ TX_BD_SPACE_HIGH - TX_BD_SPACE_BASE + 1);* H7 m/ l' d% F8 S% K& o
- j: ~( a0 E( C! ]2 Q, `) ?
Status = XAxiDma_BdRingCreate(TxRingPtr, TX_BD_SPACE_BASE,* a9 J4 P3 G8 h- Z. Z
TX_BD_SPACE_BASE,: u4 t: ~& \* E E# P( s
XAXIDMA_BD_MINIMUM_ALIGNMENT, BdCount);5 U! i( a9 ?+ g
if (Status != XST_SUCCESS) {
' h, r8 A2 J i# g R3 s* `; e xil_printf("failed create BD ring in txsetup\r\n");
& a' h2 M# ^' O4 Q! S- a
+ x; B; H0 `& y* C) n) z0 p+ _ return XST_FAILURE;& j& P/ e$ D3 t' b1 k6 |
}
0 R. A% @- G9 r4 j8 D& F' b, L$ h3 n( D& g N
/*
. A& @% |) z( z. m6 F8 Y * We create an all-zero BD as the template.. I6 K% W' |* X4 c. P
*/
3 p. U- S% q$ l XAxiDma_BdClear(&BdTemplate);
" ?4 T: x* `- O4 h; U" w4 H- A& Q) m8 r' B6 R
Status = XAxiDma_BdRingClone(TxRingPtr, &BdTemplate);
5 j5 [' ? h" V2 C if (Status != XST_SUCCESS) {
4 u9 N+ x/ l- x/ H: v R xil_printf("failed bdring clone in txsetup %d\r\n", Status);
1 _ }/ I# P3 X) v5 J3 U- [! R: I
return XST_FAILURE;
0 m: t. W: ^- b }
3 y- I& `# ]( Z, u5 w8 D' `
) U; B, w3 O3 q" {0 `# u1 e /* Start the TX channel */8 E- N& P; }* Q4 S+ y
Status = XAxiDma_BdRingStart(TxRingPtr);9 R: F7 j3 X( R; z: C: a
if (Status != XST_SUCCESS) {! V/ Z1 @( s3 A4 p
xil_printf("failed start bdring txsetup %d\r\n", Status);
; X) @- W0 H2 A2 y( S" E' g( L P7 l1 v; H& {3 O
return XST_FAILURE;
* O" p3 X& B' K; f1 ] }
' }: y5 E4 A" `4 T8 n# U, U( c. k+ w7 ]0 {' T4 x
return XST_SUCCESS;
5 [1 I" I& g/ `9 ]% P* p/ c. y" c}
; A9 f9 e7 r; I& {9 m# i) J
8 {) ^6 t4 d; y; d/*****************************************************************************/
- P8 n; P! E% T/** r2 g, ]0 {9 r1 W/ S7 B2 \
*( T0 t! a7 E8 Q# A4 u9 F
* This function transmits one packet non-blockingly through the DMA engine.7 A, \( J( R' } Y* o m7 N
*9 A y2 b. s. Z
* @param AxiDmaInstPtr points to the DMA engine instance' C6 j- t9 J7 ^2 S! L
*
2 t, q% r2 N( F; Z4 t8 ]7 N* @return - XST_SUCCESS if the DMA accepts the packet successfully," m0 v5 m7 C3 b- S
* - XST_FAILURE otherwise.
! n( B4 w% _5 X8 A& w3 {' [# V*
: u" \7 T! q% H' m* @note None.+ D, r$ b. |5 @, M2 {! e/ K. X2 {
* _) z( \+ p3 K; k& G' B
******************************************************************************/
$ J; y4 {1 y7 N bstatic int SendPacket(XAxiDma * AxiDmaInstPtr)0 l! Q& m" ~! S' |2 Y6 m5 t8 E
{% \% [2 h) i3 c Y6 L
XAxiDma_BdRing *TxRingPtr;
E; V1 m( x5 `, _7 N6 H, G9 J3 {- U u8 *TxPacket;
' @1 [' I1 E1 S: |& `, W0 K u8 Value;- r7 \$ ], Q2 i$ M0 q) _
XAxiDma_Bd *BdPtr;8 M. n1 C( | w* y9 ]) |$ y
int Status;: X2 G, D$ T% R, y
int Index;9 Q8 J: S' u" |. q4 B; }
# m3 ~- F* [( k, c
TxRingPtr = XAxiDma_GetTxRing(AxiDmaInstPtr);
4 P/ ^/ c% S8 b Z z h. ?
, j% l$ Q" N3 E% t' ?: }" v /* Create pattern in the packet to transmit *// F! S; D; C7 q& K2 G: ?# q$ s
TxPacket = (u8 *) Packet;0 g9 N3 O0 e. P, m/ \$ p+ x
$ n, }. H7 _3 u) m' y) M8 A
Value = TEST_START_VALUE;5 [# h0 a5 P# t* `' k" p3 t
3 O+ w! _1 U# q for(Index = 0; Index < MAX_PKT_LEN; Index ++) {
, ~0 H `: R- p- Z( D( X0 e. r1 B TxPacket[Index] = Value;
: t6 F) } [- j) j" Q& n
/ p* `. D3 N3 u" o Value = (Value + 1) & 0xFF;
! y- K5 x# ~6 |9 t% ^ }
3 Z& b: p2 x( Z/ t" `" D1 x1 v$ z0 k9 n; \% z
/* Flush the SrcBuffer before the DMA transfer, in case the Data Cache
; d/ R# C- e7 B5 \8 C; ^ * is enabled9 j2 O& A$ W8 j5 r2 U# Z/ X& _
*/* h- g. v+ R. F" g
Xil_DCacheFlushRange((UINTPTR)TxPacket, MAX_PKT_LEN);
. y( i' q; j7 [/ N6 i1 ~% r3 {" _#ifdef __aarch64__" U& z$ i! h ?9 b" R% G$ v
Xil_DCacheFlushRange((UINTPTR)RX_BUFFER_BASE, MAX_PKT_LEN);2 ^# o9 `3 b. l
#endif
4 U: O6 x3 }5 A: q- ?2 A& Y
0 l0 @" W) h- c: q; ~! s
1 ]1 G! j$ U3 W3 u* H' Y& q4 X5 b" ^ /* Allocate a BD */
. W+ \: L6 w' h% B9 P! i) _4 s: W Status = XAxiDma_BdRingAlloc(TxRingPtr, 1, &BdPtr);+ ?. }8 P( n3 v# }, J$ j% S& L
if (Status != XST_SUCCESS) {) z3 P$ [7 m4 r' S9 J9 c
return XST_FAILURE;
# X+ w( ?. N6 I: X8 ? }( r n7 y- ^1 C5 Z
9 m$ F" X/ ^5 Q: d$ r /* Set up the BD using the information of the packet to transmit */+ |1 Z* [0 d( Y) G
Status = XAxiDma_BdSetBufAddr(BdPtr, (UINTPTR) Packet);
1 E) T, m5 K O" t% M if (Status != XST_SUCCESS) {
9 h5 W. h/ W9 ]/ t: h, \: H xil_printf("Tx set buffer addr %x on BD %x failed %d\r\n",. Q& x- s( U' \9 W. t- [
(UINTPTR)Packet, (UINTPTR)BdPtr, Status);. l; f) h$ Z5 Z
" D' k; {1 w1 T" H
return XST_FAILURE;$ i, m D5 g: K6 A2 ^$ P! B% b
}
' D# q+ Z7 w" j" G2 M# }2 r* k3 H3 Q' v3 Q0 E
Status = XAxiDma_BdSetLength(BdPtr, MAX_PKT_LEN,' X% p3 y C, X8 U0 |+ a! R: {
TxRingPtr->MaxTransferLen);
# M5 N2 L7 A! S* E6 l1 g1 V" n if (Status != XST_SUCCESS) {
- B. ?# l. x. X" l xil_printf("Tx set length %d on BD %x failed %d\r\n",0 T B1 M- B( r
MAX_PKT_LEN, (UINTPTR)BdPtr, Status);; J1 f; W0 M9 l9 @# b- Z4 n! L. z
# _7 R1 U, i3 f; D; u4 w6 l return XST_FAILURE;
' z. [0 }, t' D1 H- `& t }, N' M# W: u, {) g1 ~
1 l k. T2 m2 i, ]" w: ?#if (XPAR_AXIDMA_0_SG_INCLUDE_STSCNTRL_STRM == 1)
, |. j2 W; q$ G! Q2 d( i Status = XAxiDma_BdSetAppWord(BdPtr,
3 Z) I% ?# {3 s XAXIDMA_LAST_APPWORD, MAX_PKT_LEN);
. R; y: R3 [6 D8 n) k
. d- K0 U" p) Z; [) Y /* If Set app length failed, it is not fatal
+ N( V4 j2 Y A; x4 l */
9 x( H. k# N/ |/ ~4 Q: A- J if (Status != XST_SUCCESS) {& D: _: B! A- _' G) v+ A
xil_printf("Set app word failed with %d\r\n", Status);
. I% f+ p( n: u j }0 u: p3 V- H& B! c/ n- y% C6 q
#endif4 U1 }( O6 G. ^" J
( K% h$ l4 Q" u- _7 o( T: p7 y! N
/* For single packet, both SOF and EOF are to be set6 H5 f9 r" x% k% `8 ^/ ?) n
*/
# X. z# e! x% _& ^, _ XAxiDma_BdSetCtrl(BdPtr, XAXIDMA_BD_CTRL_TXEOF_MASK |9 m& s3 u+ H [7 U) n! D7 o& Z
XAXIDMA_BD_CTRL_TXSOF_MASK);( ?6 M! b' Q/ q0 \/ D0 |- f5 G
! C# g( m( u) i% i0 y6 n! D7 S XAxiDma_BdSetId(BdPtr, (UINTPTR)Packet);. \8 D: d5 q6 w$ H# F. x! N
5 T# K3 b# d8 L3 ]- x9 A6 [ /* Give the BD to DMA to kick off the transmission. */5 i) K: Y1 t) @5 r
Status = XAxiDma_BdRingToHw(TxRingPtr, 1, BdPtr);, P" C; E6 z% T$ g8 C
if (Status != XST_SUCCESS) {
j4 a3 r* G% A# q2 { xil_printf("to hw failed %d\r\n", Status);! ~) u9 a, N) }
return XST_FAILURE;
, E% F$ v. x7 R- `& l" h+ w }
. }& b T f: F0 k$ h k* o* r, M {6 T; n( Z
, z" D) {% r m! F7 F; ^. o6 m) U4 G
" H5 f( \) |" J7 Q$ k
return XST_SUCCESS;$ n8 v* I* ] K) @- s
}
' t0 T' y# ]9 b0 y; p T5 Y9 S6 W* U- M$ y r# P* z
/*****************************************************************************/ o0 q# L; P" v; @
/*
8 l( B4 B" \- A$ g8 ]*& p1 a2 t$ y/ {2 B7 y
* This function checks data buffer after the DMA transfer is finished.4 w8 z2 r% N8 g& [' y$ Z! q
*
6 w) V0 A7 B0 H0 k* @param None+ @7 |; \& z T% _
*
0 r/ Y/ c% ?& \* @return - XST_SUCCESS if validation is successful
+ n4 S% l G7 ^3 H) e* - XST_FAILURE if validation is failure.
% {+ O& v: a. X1 |*5 ?2 o" f* b& R5 g, D
* @note None.
g7 R( j, Y! L*0 G; P' r! f8 g5 U
******************************************************************************/; W) ]. _( z2 s8 W, B* L" o- Z
static int CheckData(void)
0 a3 e4 }1 h7 s3 `{5 j! h, E9 ~9 N5 ^2 M
u8 *RxPacket;
+ N& C0 Z& z; m+ o" ]9 a; w6 _9 R int Index = 0;* w1 E# ?: y( ?" N
u8 Value;
7 r, Q2 K6 v' Q9 ` ~' |" o3 }( x6 M) u* z! |; v. [! y1 S* z
' r8 q/ H6 f8 Z: d b- V/ G O! d RxPacket = (u8 *) RX_BUFFER_BASE;
# A+ g* l) j9 w; a! B0 [ Value = TEST_START_VALUE;, X* _; L: `2 W4 D9 h7 @, B
2 ~: N' S8 b) W$ m
/* Invalidate the DestBuffer before receiving the data, in case the: q9 c; m. S+ l8 q- i# [
* Data Cache is enabled
& @6 M0 w( W! e4 @9 I */4 w2 q" o, G: v/ {/ e
#ifndef __aarch64__4 S: Q' Z1 \& s- ^) e; h) e1 r
Xil_DCacheInvalidateRange((UINTPTR)RxPacket, MAX_PKT_LEN);
0 x: }* ]+ l" b0 H3 p- b: Q#endif
$ P/ k; f8 p- s( t' }$ Q+ w
. Y2 H( h) R! w; s- w% X% S for(Index = 0; Index < MAX_PKT_LEN; Index++) {
1 _0 J6 E) Y2 u& ?$ ~ Q' { if (RxPacket[Index] != Value) {
* }% J( {3 `; D# s) c( x$ Y xil_printf("Data error %d: %x/%x\r\n",
* E5 P8 o! M! Z n6 G0 e Index, (unsigned int)RxPacket[Index],/ H- H; Y1 ]0 d6 ]) ]; F, q
(unsigned int)Value);
6 c6 `" l7 D7 P* w; B; j3 b2 O' d1 B! X2 Z8 R
return XST_FAILURE;+ u. M D) C+ V2 i% x2 ^- z
}: B8 o! M9 v& l1 D$ |5 {
Value = (Value + 1) & 0xFF;% A& H9 K4 b& D- k5 U9 P" N1 |8 N0 b
}3 h* U1 E0 W; t1 Z, u2 C$ b) X
$ g$ n v" U! C! t: v6 @+ } return XST_SUCCESS;: s8 m: B; e! O" K% C( F/ z/ A: B
}) s u* u0 m* s4 \
3 n& n+ g3 e( ^ R. H; g/*****************************************************************************/! e- m2 X# ]3 X( Y: X u" p
/**
, K; b: R$ ~; i7 H*
* L/ g( y% V% U% g" J7 [. U$ ^* This function waits until the DMA transaction is finished, checks data,- i$ y" Q/ {* z4 q
* and cleans up.5 `8 `2 W- _$ [* l" R/ n' W
*) i+ {: X# b; [9 u
* @param None6 |9 p+ S8 n* g& D2 V/ F" m
*& }( H3 D+ l W( m
* @return - XST_SUCCESS if DMA transfer is successful and data is correct,6 p: Q3 d0 T9 A. q5 n
* - XST_FAILURE if fails.
: l1 G, P% a1 ?( N$ \. t i*
" T, p' n2 F$ d- F/ }8 `* @note None.
( h0 v4 T: J' o8 k*
. l; h! P1 M6 I1 L******************************************************************************/
. l6 t' J* f' B4 }2 N/ }1 Kstatic int CheckDmaResult(XAxiDma * AxiDmaInstPtr)
j. b! q* O* w2 ]( X7 v, p3 ~8 k{0 K, g( d' m5 M& ^+ e# j/ v* C6 \% b
XAxiDma_BdRing *TxRingPtr;# @9 l# l* o: |5 b
XAxiDma_BdRing *RxRingPtr;' K7 t9 L; c. @( m: `2 F( t0 R$ u% j
XAxiDma_Bd *BdPtr;/ m8 ]+ R, c/ {/ G- \
int ProcessedBdCount;
. D; z$ E; ?1 Q) G; N2 e7 z int FreeBdCount;1 p4 |" B. q- _4 F% g$ t8 Q
int Status;
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5 G1 P0 S+ Z& q TxRingPtr = XAxiDma_GetTxRing(AxiDmaInstPtr);/ T5 [9 F1 X& ^- {/ U
RxRingPtr = XAxiDma_GetRxRing(AxiDmaInstPtr);$ v; Y% w; d% a2 V y
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/* Wait until the one BD TX transaction is done */
{6 ?: K. S! l while ((ProcessedBdCount = XAxiDma_BdRingFromHw(TxRingPtr,0 c6 Z" D! }6 y0 w; h% t4 P
XAXIDMA_ALL_BDS,+ ~6 p0 a: C; K0 q6 w, V
&BdPtr)) == 0) {
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/* Free all processed TX BDs for future transmission */3 J) Q1 j$ j/ Y& g+ ]3 u" U
Status = XAxiDma_BdRingFree(TxRingPtr, ProcessedBdCount, BdPtr);+ h4 p% G/ Q. O& W T3 m0 Z8 E7 h
if (Status != XST_SUCCESS) {: E$ o1 n" |8 n5 i9 k
xil_printf("Failed to free %d tx BDs %d\r\n",
# ^4 N5 q$ Z+ t! H/ O. W ProcessedBdCount, Status);9 L7 \) S- X' G0 b% i6 V
return XST_FAILURE;! R7 ] q$ R8 Q
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/* Wait until the data has been received by the Rx channel */9 M+ J+ \' z5 }5 u4 f
while ((ProcessedBdCount = XAxiDma_BdRingFromHw(RxRingPtr,
. H( Q" D) H: E! v o XAXIDMA_ALL_BDS,$ |. k+ V4 z) j: u, Z. l
&BdPtr)) == 0) {
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/* Check received data */8 }6 }2 Q; V) I; k( w- x
if (CheckData() != XST_SUCCESS) {& x* E4 ]0 X& w" \4 G
8 ^9 b: S2 {2 w$ L4 j' ? return XST_FAILURE;0 d5 e: L4 D% _6 k& @4 H* b
}3 I0 L2 S- ^) ] w# M% D; o
! C- Z, g6 E( l8 n# z3 I$ @ /* Free all processed RX BDs for future transmission */
R7 Q! @, u3 ? b2 M7 _ u# X Status = XAxiDma_BdRingFree(RxRingPtr, ProcessedBdCount, BdPtr);
7 ]1 Y3 E9 f$ P- g$ Z if (Status != XST_SUCCESS) {, C9 W! j, h* B9 p' y4 ^ V
xil_printf("Failed to free %d rx BDs %d\r\n",3 d! r: x9 w6 v. W
ProcessedBdCount, Status);
}; B( c2 Z. a- A2 B# ^5 c9 e return XST_FAILURE;
) {( @, Y5 R% o/ V4 e4 F }
' I1 ?4 h7 b# T( u
; |# N' a( C/ }# ^- g /* Return processed BDs to RX channel so we are ready to receive new
1 o9 \4 Q- a# U0 F( K+ a% S4 \( h * packets:: T, r5 D3 F9 q* |1 ~# l7 O
* - Allocate all free RX BDs
, n: l+ |9 ]" J7 E- i * - Pass the BDs to RX channel
d5 w$ ~" \ w3 F' V' ~ */; \, m# B# W$ d }9 e: q. i# m7 l. R" v
FreeBdCount = XAxiDma_BdRingGetFreeCnt(RxRingPtr);
% w% g9 T7 T0 b& p* D Status = XAxiDma_BdRingAlloc(RxRingPtr, FreeBdCount, &BdPtr); D* n, Q# G& z) b
if (Status != XST_SUCCESS) {3 u. s4 x5 ~7 m9 Q
xil_printf("bd alloc failed\r\n");
& H; v8 I+ M9 T& i8 R return XST_FAILURE;
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Status = XAxiDma_BdRingToHw(RxRingPtr, FreeBdCount, BdPtr);$ O* d+ |7 R+ S9 i
if (Status != XST_SUCCESS) {
x3 W% G5 y9 R3 q( p) ?* b xil_printf("Submit %d rx BDs failed %d\r\n", FreeBdCount, Status);
# w) O. s2 J: L7 J return XST_FAILURE;/ m+ u* Q4 C+ k4 Y5 h
}% T) t1 Y5 F. Y3 [1 [
+ |4 w7 b" y. p; a% A3 l' }
return XST_SUCCESS;% ~ A, ?7 f8 y1 N0 [' U
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