Common shared memory module. Using O_CLOEXEC for opened files.

support/arcade/mra_loader.cpp

@@ -4,7 +4,6 @@
 #include <sys/stat.h>
 #include <dirent.h>
 #include <ctype.h>
-#include <sys/mman.h>
 
 #include "../../sxmlc.h"
 #include "../../user_io.h"
@@ -13,6 +12,7 @@
 #include "../../menu.h"
 #include "../../fpga_io.h"
 #include "../../lib/md5/md5.h"
+#include "../../shmem.h"
 
 #include "buffer.h"
 #include "mra_loader.h"
@@ -292,33 +292,6 @@ static int rom_patch(const uint8_t *buf, int offset, uint16_t len, int dataop)
 	return 1;
 }
 
-static void send_to_ddr(uint32_t address, void* buf, uint32_t len)
-{
-	int memfd = open("/dev/mem", O_RDWR | O_SYNC);
-	if (memfd == -1)
-	{
-		printf("Unable to open /dev/mem!\n");
-		return;
-	}
-
-	//make sure it's in FPGA address space
-	uint32_t map_addr = 0x20000000 | address;
-
-	void *base = mmap(0, len, PROT_READ | PROT_WRITE, MAP_SHARED, memfd, map_addr);
-	if (base == (void *)-1)
-	{
-		printf("Unable to mmap (0x%X, %d)!\n", map_addr, len);
-		close(memfd);
-		return;
-	}
-
-	memcpy(base, buf, len);
-	munmap(base, len);
-
-	close(memfd);
-	return;
-}
-
 static void rom_finish(int send, uint32_t address, int index)
 {
 	if (romlen[0] && romdata)
@@ -336,7 +309,7 @@ static void rom_finish(int send, uint32_t address, int index)
 
 			if (address)
 			{
-				send_to_ddr(address, data, len);
+				shmem_put(fpga_mem(address), len, data);
 			}
 			else
 			{