--- /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 "drivers/drivers.h"
+#include "libc/string.h"
+#include "qemu/qemu.h"
+#include "libopenbios/ofmem.h"
+#include "arch/ppc/processor.h"
+#include "drivers/usb.h"
+
+/************************************************************************/
+/* RTAS (run-time abstraction services) */
+/************************************************************************/
+
+#ifdef CONFIG_RTAS
+DECLARE_NODE( rtas, INSTALL_OPEN, 0, "+/rtas" );
+
+/* ( physbase -- rtas_callback ) */
+static void
+rtas_instantiate( void )
+{
+ ucell physbase = POP();
+ ucell s=0x1000, size = (ucell)of_rtas_end - (ucell)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
+
+
+/************************************************************************/
+/* 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*)cell2pointer(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*)cell2pointer(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, "+/openprom/client-services" );
+
+/* ( -- ) */
+static void
+ciface_quiesce( unsigned long args[], unsigned long ret[] )
+{
+ usb_exit();
+#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
+}
+
+/* ( -- ms ) */
+#define TIMER_FREQUENCY 16600000ULL
+
+static void
+ciface_milliseconds( unsigned long args[], unsigned long ret[] )
+{
+ unsigned long tbu, tbl, temp;
+ unsigned long long ticks, msecs;
+
+ asm volatile(
+ "1:\n"
+ "mftbu %2\n"
+ "mftb %0\n"
+ "mftbu %1\n"
+ "cmpw %2,%1\n"
+ "bne 1b\n"
+ : "=r"(tbl), "=r"(tbu), "=r"(temp)
+ :
+ : "cc");
+
+ ticks = (((unsigned long long)tbu) << 32) | (unsigned long long)tbl;
+ msecs = (1000 * ticks) / TIMER_FREQUENCY;
+ PUSH( msecs );
+}
+
+
+NODE_METHODS( ciface ) = {
+ { "quiesce", ciface_quiesce },
+ { "milliseconds", ciface_milliseconds },
+};
+
+
+/************************************************************************/
+/* MMU/memory methods */
+/************************************************************************/
+
+DECLARE_NODE( memory, INSTALL_OPEN, 0, "/memory" );
+DECLARE_UNNAMED_NODE( mmu, INSTALL_OPEN, 0 );
+DECLARE_NODE( mmu_ciface, 0, 0, "+/openprom/client-services" );
+
+
+/* ( phys size align --- base ) */
+static void
+mem_claim( void )
+{
+ ucell align = POP();
+ ucell size = POP();
+ ucell phys = POP();
+ ucell 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 )
+{
+ ucell align = POP();
+ ucell size = POP();
+ ucell phys = POP();
+ ucell 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 )
+{
+ ucell mode = POP();
+ ucell size = POP();
+ ucell virt = POP();
+ ucell phys = POP();
+ ucell 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 )
+{
+ ucell align = POP();
+ ucell size = POP();
+ ucell virt = POP();
+ ucell 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 )
+{
+ ucell size = POP();
+ ucell virt = POP();
+ ofmem_release(virt, size);
+}
+
+
+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( const char *cpuname )
+{
+ phandle_t chosen, ph;
+#ifdef CONFIG_RTAS
+ if (is_newworld()) {
+ REGISTER_NODE( rtas );
+ }
+#endif
+ REGISTER_NODE( ciface );
+ REGISTER_NODE( memory );
+ REGISTER_NODE_METHODS( mmu, cpuname );
+ REGISTER_NODE( mmu_ciface );
+ REGISTER_NODE( tty );
+
+ chosen = find_dev("/chosen");
+ if (chosen) {
+ push_str(cpuname);
+ fword("open-dev");
+ ph = POP();
+ set_int_property(chosen, "mmu", ph);
+ }
+}
Code Review / kvmfornfv.git / blobdiff