patch-2.4.19 linux-2.4.19/arch/mips/hp-lj/utils.c

• Lines: 70
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/hp-lj/utils.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/hp-lj/utils.c linux-2.4.19/arch/mips/hp-lj/utils.c
@@ -0,0 +1,69 @@
+/*
+ *
+ *
+ *
+ *
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <asm/io.h>
+#include "utils.h"
+
+
+#define  miu_chan_cfg(x)      ((volatile unsigned long  *)(0xbff40000+x*4))       /* for andros */
+
+int mbsize[8] = {1,2,4,8,16,32,64,128};
+
+unsigned long get_mem_avail(void) {
+
+    unsigned long  cfg[10],i,total_mem=0;
+
+	for(i=0;i<10;i++)  
+		cfg[i] = *miu_chan_cfg(i); 
+
+	for(i=0;i<10;i++){
+		if(cfg[i]==0x1fc160c2) continue;                           // skip empties 
+		if(   ( (cfg[i]>>12) & 0xf )   <=  0xb ) continue;         // skip roms
+        total_mem += mbsize[(cfg[i]>>16)&0x7] *1024*1024;
+	}
+    return total_mem;
+}
+
+
+
+
+static ulong* buffer_ptr = NULL;
+static ulong buffer_size = 0;
+
+ulong* get_reserved_buffer(void) {return KSEG0ADDR(buffer_ptr);}
+ulong* get_reserved_buffer_virtual(void) {return (ulong*)ReservedMemVirtualAddr;}
+ulong get_reserved_buffer_size(void) {return buffer_size;}
+
+#define MIN_GEN_MEM (4 << 20)
+
+	
+void  reserve_buffer(const char* cl, ulong base_mem) 
+{
+	char* pos = strstr(cl, "reserved_buffer=");
+ 	if (pos) {
+		buffer_size = simple_strtol(pos+strlen("reserved_buffer="), 
+					    0, 10);
+		buffer_size <<= 20;
+		if (buffer_size + MIN_GEN_MEM > base_mem)
+			buffer_size = base_mem - MIN_GEN_MEM;
+		if (buffer_size > 0) 
+			buffer_ptr = (ulong*)(base_mem - buffer_size);
+		else 
+			buffer_size = 0;
+	}
+}
+
+
+
+EXPORT_SYMBOL(get_reserved_buffer);
+EXPORT_SYMBOL(get_reserved_buffer_virtual);
+EXPORT_SYMBOL(get_reserved_buffer_size);
+
+