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Add networking support for griscv bsp

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* Only GRETH device supported for now
	* Fix endian problem in GRETH driver
	* Remove SPARC assembly from greth.c
	* Builds with both autoconf and waf
This commit is contained in:
Jiri Gaisler
2020-10-24 16:43:49 +02:00
parent 7f0379c8dd
commit b4c29b54e7
8 changed files with 117 additions and 14 deletions
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24
bsps/shared/grlib/net/greth.c
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@@ -25,6 +25,7 @@
#include <rtems/bspIo.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <rtems/error.h>
#include <rtems/rtems_bsdnet.h>
@@ -721,10 +722,13 @@ void ipalign(struct mbuf *m)
unsigned int tmp = 0;
if ((((int) m->m_data) & 2) && (m->m_len)) {
#if CPU_LITTLE_ENDIAN == TRUE
memmove((caddr_t)(((int) m->m_data) + 2), m->m_data, m->m_len);
#else
last = (unsigned int *) ((((int) m->m_data) + m->m_len + 8) & ~3);
first = (unsigned int *) (((int) m->m_data) & ~3);
/* tmp = *first << 16; */
asm volatile (" lda [%1] 1, %0\n" : "=r"(tmp) : "r"(first) );
tmp = GRETH_MEM_LOAD(first);
tmp = tmp << 16;
first++;
do {
@@ -733,12 +737,12 @@ void ipalign(struct mbuf *m)
** Load with forced cache miss
* data = *first;
*/
asm volatile (" lda [%1] 1, %0\n" : "=r"(data) : "r"(first) );
data = GRETH_MEM_LOAD(first);
*first = tmp | (data >> 16);
tmp = data << 16;
first++;
} while (first <= last);
#endif
m->m_data = (caddr_t)(((int) m->m_data) + 2);
}
}
@@ -756,7 +760,6 @@ greth_Daemon (void *arg)
SPIN_IRQFLAGS(flags);
int first;
int tmp;
unsigned int addr;
for (;;)
{
@@ -836,14 +839,11 @@ again:
#ifdef CPU_U32_FIX
if(!dp->gbit_mac) {
/* OVERRIDE CACHED ETHERNET HEADER FOR NON-SNOOPING SYSTEMS */
addr = (unsigned int)eh;
asm volatile (" lda [%1] 1, %0\n" : "=r"(tmp) : "r"(addr) );
addr+=4;
asm volatile (" lda [%1] 1, %0\n" : "=r"(tmp) : "r"(addr) );
addr+=4;
asm volatile (" lda [%1] 1, %0\n" : "=r"(tmp) : "r"(addr) );
addr+=4;
asm volatile (" lda [%1] 1, %0\n" : "=r"(tmp) : "r"(addr) );
tmp = GRETH_MEM_LOAD((uintptr_t)eh);
tmp = GRETH_MEM_LOAD(4+(uintptr_t)eh);
tmp = GRETH_MEM_LOAD(8+(uintptr_t)eh);
tmp = GRETH_MEM_LOAD(12+(uintptr_t)eh);
(void)tmp;
ipalign(m); /* Align packet on 32-bit boundary */
}