--- /dev/null
+/*
+ * Creation Date: <2004/08/28 18:38:22 greg>
+ * Time-stamp: <2004/08/28 18:38:22 greg>
+ *
+ * <methods.c>
+ *
+ * Misc device node methods
+ *
+ * Copyright (C) 2004 Greg Watson
+ *
+ * Based on MOL specific code which is
+ *
+ * Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2
+ *
+ */
+
+#include "config.h"
+#include "libopenbios/bindings.h"
+#include "libc/string.h"
+#include "briq/briq.h"
+#include "libopenbios/ofmem.h"
+
+/************************************************************************/
+/* RTAS (run-time abstraction services) */
+/************************************************************************/
+
+#ifdef CONFIG_RTAS
+DECLARE_NODE( rtas, INSTALL_OPEN, 0, "+/rtas" );
+
+/* ( physbase -- rtas_callback ) */
+static void
+rtas_instantiate( void )
+{
+ int physbase = POP();
+ int s=0x1000, size = (int)of_rtas_end - (int)of_rtas_start;
+ unsigned long virt;
+
+ while( s < size )
+ s += 0x1000;
+ virt = ofmem_claim_virt( 0, s, 0x1000 );
+ ofmem_map( physbase, virt, s, -1 );
+ memcpy( (char*)virt, of_rtas_start, size );
+
+ printk("RTAS instantiated at %08x\n", physbase );
+ flush_icache_range( (char*)virt, (char*)virt + size );
+
+ PUSH( physbase );
+}
+
+NODE_METHODS( rtas ) = {
+ { "instantiate", rtas_instantiate },
+ { "instantiate-rtas", rtas_instantiate },
+};
+#endif
+
+
+/************************************************************************/
+/* stdout */
+/************************************************************************/
+
+DECLARE_NODE( vfd_stdout, INSTALL_OPEN, 0, "Tdisplay" );
+
+/* ( addr len -- actual ) */
+static void
+stdout_write( void )
+{
+ int len = POP();
+ char *addr = (char*)POP();
+ char *s = malloc( len + 1 );
+
+ strncpy_nopad( s, addr, len );
+ s[len]=0;
+
+ printk( "%s", s );
+ //vfd_draw_str( s );
+ free( s );
+
+ PUSH( len );
+}
+
+NODE_METHODS( vfd_stdout ) = {
+ { "write", stdout_write },
+};
+
+
+/************************************************************************/
+/* tty */
+/************************************************************************/
+
+DECLARE_NODE( tty, INSTALL_OPEN, 0, "/packages/terminal-emulator" );
+
+/* ( addr len -- actual ) */
+static void
+tty_read( void )
+{
+ int ch, len = POP();
+ char *p = (char*)POP();
+ int ret=0;
+
+ if( len > 0 ) {
+ ret = 1;
+ ch = getchar();
+ if( ch >= 0 ) {
+ *p = ch;
+ } else {
+ ret = 0;
+ }
+ }
+ PUSH( ret );
+}
+
+/* ( addr len -- actual ) */
+static void
+tty_write( void )
+{
+ int i, len = POP();
+ char *p = (char*)POP();
+ for( i=0; i<len; i++ )
+ putchar( *p++ );
+ RET( len );
+}
+
+NODE_METHODS( tty ) = {
+ { "read", tty_read },
+ { "write", tty_write },
+};
+
+/************************************************************************/
+/* client interface 'quiesce' */
+/************************************************************************/
+
+DECLARE_NODE( ciface, 0, 0, "/packages/client-iface" );
+
+/* ( -- ) */
+static void
+ciface_quiesce( unsigned long args[], unsigned long ret[] )
+{
+#if 0
+ unsigned long msr;
+ /* This seems to be the correct thing to do - but I'm not sure */
+ asm volatile("mfmsr %0" : "=r" (msr) : );
+ msr &= ~(MSR_IR | MSR_DR);
+ asm volatile("mtmsr %0" :: "r" (msr) );
+#endif
+ printk("=============================================================\n\n");
+}
+
+/* ( -- ms ) */
+static void
+ciface_milliseconds( unsigned long args[], unsigned long ret[] )
+{
+ extern unsigned long get_timer_freq();
+ static unsigned long mticks=0, usecs=0;
+ unsigned long t;
+
+ asm volatile("mftb %0" : "=r" (t) : );
+ if( mticks )
+ usecs += get_timer_freq() / 1000000 * ( t-mticks );
+ mticks = t;
+
+ PUSH( usecs/1000 );
+}
+
+
+NODE_METHODS( ciface ) = {
+ { "quiesce", ciface_quiesce },
+ { "milliseconds", ciface_milliseconds },
+};
+
+
+/************************************************************************/
+/* MMU/memory methods */
+/************************************************************************/
+
+DECLARE_NODE( memory, INSTALL_OPEN, 0, "/memory" );
+DECLARE_NODE( mmu, INSTALL_OPEN, 0, "/cpu@0" );
+DECLARE_NODE( mmu_ciface, 0, 0, "/packages/client-iface" );
+
+
+/* ( phys size align --- base ) */
+static void
+mem_claim( void )
+{
+ int align = POP();
+ int size = POP();
+ int phys = POP();
+ int ret = ofmem_claim_phys( phys, size, align );
+
+ if( ret == -1 ) {
+ printk("MEM: claim failure\n");
+ throw( -13 );
+ return;
+ }
+ PUSH( ret );
+}
+
+/* ( phys size --- ) */
+static void
+mem_release( void )
+{
+ POP(); POP();
+}
+
+/* ( phys size align --- base ) */
+static void
+mmu_claim( void )
+{
+ int align = POP();
+ int size = POP();
+ int phys = POP();
+ int ret = ofmem_claim_virt( phys, size, align );
+
+ if( ret == -1 ) {
+ printk("MMU: CLAIM failure\n");
+ throw( -13 );
+ return;
+ }
+ PUSH( ret );
+}
+
+/* ( phys size --- ) */
+static void
+mmu_release( void )
+{
+ POP(); POP();
+}
+
+/* ( phys virt size mode -- [ret???] ) */
+static void
+mmu_map( void )
+{
+ int mode = POP();
+ int size = POP();
+ int virt = POP();
+ int phys = POP();
+ int ret;
+
+ /* printk("mmu_map: %x %x %x %x\n", phys, virt, size, mode ); */
+ ret = ofmem_map( phys, virt, size, mode );
+
+ if( ret ) {
+ printk("MMU: map failure\n");
+ throw( -13 );
+ return;
+ }
+}
+
+/* ( virt size -- ) */
+static void
+mmu_unmap( void )
+{
+ POP(); POP();
+}
+
+/* ( virt -- false | phys mode true ) */
+static void
+mmu_translate( void )
+{
+ ucell mode;
+ ucell virt = POP();
+ ucell phys = ofmem_translate( virt, &mode );
+
+ if( phys == -1 ) {
+ PUSH( 0 );
+ } else {
+ PUSH( phys );
+ PUSH( mode );
+ PUSH( -1 );
+ }
+}
+
+/* ( virt size align -- baseaddr|-1 ) */
+static void
+ciface_claim( void )
+{
+ int align = POP();
+ int size = POP();
+ int virt = POP();
+ int ret = ofmem_claim( virt, size, align );
+
+ /* printk("ciface_claim: %08x %08x %x\n", virt, size, align ); */
+ PUSH( ret );
+}
+
+/* ( virt size -- ) */
+static void
+ciface_release( void )
+{
+ POP();
+ POP();
+}
+
+
+NODE_METHODS( memory ) = {
+ { "claim", mem_claim },
+ { "release", mem_release },
+};
+
+NODE_METHODS( mmu ) = {
+ { "claim", mmu_claim },
+ { "release", mmu_release },
+ { "map", mmu_map },
+ { "unmap", mmu_unmap },
+ { "translate", mmu_translate },
+};
+
+NODE_METHODS( mmu_ciface ) = {
+ { "cif-claim", ciface_claim },
+ { "cif-release", ciface_release },
+};
+
+
+/************************************************************************/
+/* init */
+/************************************************************************/
+
+void
+node_methods_init( void )
+{
+#ifdef CONFIG_RTAS
+ REGISTER_NODE( rtas );
+#endif
+ REGISTER_NODE( vfd_stdout );
+ REGISTER_NODE( ciface );
+ REGISTER_NODE( memory );
+ REGISTER_NODE( mmu );
+ REGISTER_NODE( mmu_ciface );
+ REGISTER_NODE( tty );
+}
Code Review / kvmfornfv.git / blobdiff