Fix several bugs in the real-mode Open Firmware implementation and provide
a virtual-mode version for use on 64-bit systems, which have 32-bit firmware implementations and require similar constraints on addressing to the real-mode implementation.
This commit is contained in:
Nathan Whitehorn
parent
d06458f7f7
commit
70d75337eb
@ -65,12 +65,14 @@ __FBSDID("$FreeBSD$");
|
||||
#include <sys/systm.h>
|
||||
|
||||
#include <vm/vm.h>
|
||||
#include <vm/vm_page.h>
|
||||
#include <vm/pmap.h>
|
||||
|
||||
#include <machine/stdarg.h>
|
||||
#include <machine/bus.h>
|
||||
#include <machine/pmap.h>
|
||||
#include <machine/md_var.h>
|
||||
#include <machine/ofw_machdep.h>
|
||||
#include <machine/pmap.h>
|
||||
#include <machine/stdarg.h>
|
||||
|
||||
#include <dev/ofw/openfirm.h>
|
||||
#include <dev/ofw/ofwvar.h>
|
||||
@ -98,6 +100,8 @@ static ssize_t ofw_real_package_to_path(ofw_t, phandle_t package, char *buf,
|
||||
size_t len);
|
||||
static int ofw_real_call_method(ofw_t, ihandle_t instance, const char *method,
|
||||
int nargs, int nreturns, cell_t *args_and_returns);
|
||||
static int ofw_real_interpret(ofw_t ofw, const char *cmd, int nreturns,
|
||||
unsigned long *returns);
|
||||
static ihandle_t ofw_real_open(ofw_t, const char *device);
|
||||
static void ofw_real_close(ofw_t, ihandle_t instance);
|
||||
static ssize_t ofw_real_read(ofw_t, ihandle_t instance, void *addr, size_t len);
|
||||
@ -126,6 +130,7 @@ static ofw_method_t ofw_real_methods[] = {
|
||||
|
||||
OFWMETHOD(ofw_test, ofw_real_test),
|
||||
OFWMETHOD(ofw_call_method, ofw_real_call_method),
|
||||
OFWMETHOD(ofw_interpret, ofw_real_interpret),
|
||||
OFWMETHOD(ofw_open, ofw_real_open),
|
||||
OFWMETHOD(ofw_close, ofw_real_close),
|
||||
OFWMETHOD(ofw_read, ofw_real_read),
|
||||
@ -146,6 +151,13 @@ static ofw_def_t ofw_real = {
|
||||
};
|
||||
OFW_DEF(ofw_real);
|
||||
|
||||
static ofw_def_t ofw_32bit = {
|
||||
OFW_STD_32BIT,
|
||||
ofw_real_methods,
|
||||
0
|
||||
};
|
||||
OFW_DEF(ofw_32bit);
|
||||
|
||||
MALLOC_DEFINE(M_OFWREAL, "ofwreal", "Open Firmware Real Mode Bounce Page");
|
||||
|
||||
static int (*openfirmware)(void *);
|
||||
@ -156,13 +168,16 @@ static off_t of_bounce_offset;
|
||||
static size_t of_bounce_size;
|
||||
static struct mtx of_bounce_mtx;
|
||||
|
||||
extern int ofw_real_mode;
|
||||
extern struct pmap ofw_pmap;
|
||||
|
||||
/*
|
||||
* After the VM is up, allocate a wired, low memory bounce page.
|
||||
*/
|
||||
|
||||
static void ofw_real_bounce_alloc(void *);
|
||||
|
||||
SYSINIT(ofw_real_bounce_alloc, SI_SUB_VM, SI_ORDER_ANY,
|
||||
SYSINIT(ofw_real_bounce_alloc, SI_SUB_KMEM, SI_ORDER_ANY,
|
||||
ofw_real_bounce_alloc, NULL);
|
||||
|
||||
static void
|
||||
@ -197,38 +212,54 @@ ofw_real_bounce_alloc(void *junk)
|
||||
|
||||
of_bounce_virt = contigmalloc(PAGE_SIZE, M_OFWREAL, 0,
|
||||
0, BUS_SPACE_MAXADDR_32BIT, PAGE_SIZE, PAGE_SIZE);
|
||||
|
||||
of_bounce_phys = vtophys(of_bounce_virt);
|
||||
of_bounce_size = PAGE_SIZE;
|
||||
|
||||
/*
|
||||
* For virtual-mode OF, direct map this physical address so that
|
||||
* we have a 32-bit virtual address to give OF.
|
||||
*/
|
||||
|
||||
if (!ofw_real_mode && !hw_direct_map)
|
||||
pmap_kenter(of_bounce_phys, of_bounce_phys);
|
||||
|
||||
mtx_unlock(&of_bounce_mtx);
|
||||
}
|
||||
|
||||
static cell_t
|
||||
ofw_real_map(const void *buf, size_t len)
|
||||
{
|
||||
static char emergency_buffer[255];
|
||||
cell_t phys;
|
||||
|
||||
mtx_assert(&of_bounce_mtx, MA_OWNED);
|
||||
|
||||
if (of_bounce_virt == NULL) {
|
||||
/*
|
||||
* If we haven't set up the MMU, then buf is guaranteed
|
||||
* to be accessible to OF, because the only memory we
|
||||
* can use right now is memory mapped by firmware.
|
||||
*/
|
||||
if (!pmap_bootstrapped)
|
||||
return (cell_t)buf;
|
||||
return (cell_t)(uintptr_t)buf;
|
||||
|
||||
/*
|
||||
* XXX: It is possible for us to get called before the VM has
|
||||
* come online, but after the MMU is up. We don't have the
|
||||
* bounce buffer yet, but can no longer presume a 1:1 mapping.
|
||||
* Grab the physical address of the buffer, and hope it is
|
||||
* in range if this happens.
|
||||
* Copy into the emergency buffer, and reset at the end.
|
||||
*/
|
||||
return (cell_t)vtophys(buf);
|
||||
of_bounce_virt = emergency_buffer;
|
||||
of_bounce_phys = (vm_offset_t)of_bounce_virt;
|
||||
of_bounce_size = sizeof(emergency_buffer);
|
||||
}
|
||||
|
||||
/*
|
||||
* Make sure the bounce page offset satisfies any reasonable
|
||||
* alignment constraint.
|
||||
*/
|
||||
of_bounce_offset += of_bounce_offset % sizeof(register_t);
|
||||
of_bounce_offset += sizeof(register_t) - (of_bounce_offset % sizeof(register_t));
|
||||
|
||||
if (of_bounce_offset + len > of_bounce_size) {
|
||||
panic("Oversize Open Firmware call!");
|
||||
@ -240,7 +271,7 @@ ofw_real_map(const void *buf, size_t len)
|
||||
|
||||
of_bounce_offset += len;
|
||||
|
||||
return phys;
|
||||
return (phys);
|
||||
}
|
||||
|
||||
static void
|
||||
@ -274,25 +305,28 @@ ofw_real_init(ofw_t ofw, void *openfirm)
|
||||
static int
|
||||
ofw_real_test(ofw_t ofw, const char *name)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t service;
|
||||
cell_t missing;
|
||||
} args = {
|
||||
(cell_t)"test",
|
||||
1,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"test";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.service = ofw_real_map(name, strlen(name) + 1);
|
||||
if (args.service == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.service == 0 || openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.missing);
|
||||
}
|
||||
@ -305,21 +339,28 @@ ofw_real_test(ofw_t ofw, const char *name)
|
||||
static phandle_t
|
||||
ofw_real_peer(ofw_t ofw, phandle_t node)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t node;
|
||||
cell_t next;
|
||||
} args = {
|
||||
(cell_t)"peer",
|
||||
1,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"peer";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 1;
|
||||
|
||||
args.node = node;
|
||||
if (openfirmware(&args) == -1)
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.next);
|
||||
}
|
||||
|
||||
@ -327,21 +368,28 @@ ofw_real_peer(ofw_t ofw, phandle_t node)
|
||||
static phandle_t
|
||||
ofw_real_child(ofw_t ofw, phandle_t node)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t node;
|
||||
cell_t child;
|
||||
} args = {
|
||||
(cell_t)"child",
|
||||
1,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"child";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 1;
|
||||
|
||||
args.node = node;
|
||||
if (openfirmware(&args) == -1)
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.child);
|
||||
}
|
||||
|
||||
@ -349,21 +397,28 @@ ofw_real_child(ofw_t ofw, phandle_t node)
|
||||
static phandle_t
|
||||
ofw_real_parent(ofw_t ofw, phandle_t node)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t node;
|
||||
cell_t parent;
|
||||
} args = {
|
||||
(cell_t)"parent",
|
||||
1,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"parent";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 1;
|
||||
|
||||
args.node = node;
|
||||
if (openfirmware(&args) == -1)
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.parent);
|
||||
}
|
||||
|
||||
@ -371,21 +426,28 @@ ofw_real_parent(ofw_t ofw, phandle_t node)
|
||||
static phandle_t
|
||||
ofw_real_instance_to_package(ofw_t ofw, ihandle_t instance)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t instance;
|
||||
cell_t package;
|
||||
} args = {
|
||||
(cell_t)"instance-to-package",
|
||||
1,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"instance-to-package";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 1;
|
||||
|
||||
args.instance = instance;
|
||||
if (openfirmware(&args) == -1)
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.package);
|
||||
}
|
||||
|
||||
@ -393,27 +455,30 @@ ofw_real_instance_to_package(ofw_t ofw, ihandle_t instance)
|
||||
static ssize_t
|
||||
ofw_real_getproplen(ofw_t ofw, phandle_t package, const char *propname)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t package;
|
||||
cell_t propname;
|
||||
cell_t proplen;
|
||||
} args = {
|
||||
(cell_t)"getproplen",
|
||||
2,
|
||||
1,
|
||||
};
|
||||
int32_t proplen;
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"getproplen";
|
||||
args.nargs = 2;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.package = package;
|
||||
args.propname = ofw_real_map(propname, strlen(propname) + 1);
|
||||
if (args.propname == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.propname == 0 || openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.proplen);
|
||||
}
|
||||
@ -423,6 +488,7 @@ static ssize_t
|
||||
ofw_real_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf,
|
||||
size_t buflen)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -431,12 +497,12 @@ ofw_real_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf,
|
||||
cell_t propname;
|
||||
cell_t buf;
|
||||
cell_t buflen;
|
||||
cell_t size;
|
||||
} args = {
|
||||
(cell_t)"getprop",
|
||||
4,
|
||||
1,
|
||||
};
|
||||
int32_t size;
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"getprop";
|
||||
args.nargs = 4;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
@ -444,10 +510,13 @@ ofw_real_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf,
|
||||
args.propname = ofw_real_map(propname, strlen(propname) + 1);
|
||||
args.buf = ofw_real_map(buf, buflen);
|
||||
args.buflen = buflen;
|
||||
if (args.propname == 0 || args.buf == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.propname == 0 || args.buf == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_unmap(args.buf, buf, buflen);
|
||||
|
||||
ofw_real_stop();
|
||||
@ -459,6 +528,7 @@ static int
|
||||
ofw_real_nextprop(ofw_t ofw, phandle_t package, const char *previous,
|
||||
char *buf, size_t size)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -467,21 +537,24 @@ ofw_real_nextprop(ofw_t ofw, phandle_t package, const char *previous,
|
||||
cell_t previous;
|
||||
cell_t buf;
|
||||
cell_t flag;
|
||||
} args = {
|
||||
(cell_t)"nextprop",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"nextprop";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.package = package;
|
||||
args.previous = ofw_real_map(previous, strlen(previous) + 1);
|
||||
args.buf = ofw_real_map(buf, size);
|
||||
if (args.previous == 0 || args.buf == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.previous == 0 || args.buf == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_unmap(args.buf, buf, size);
|
||||
|
||||
ofw_real_stop();
|
||||
@ -494,6 +567,7 @@ static int
|
||||
ofw_real_setprop(ofw_t ofw, phandle_t package, const char *propname,
|
||||
const void *buf, size_t len)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -503,11 +577,11 @@ ofw_real_setprop(ofw_t ofw, phandle_t package, const char *propname,
|
||||
cell_t buf;
|
||||
cell_t len;
|
||||
cell_t size;
|
||||
} args = {
|
||||
(cell_t)"setprop",
|
||||
4,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"setprop";
|
||||
args.nargs = 4;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
@ -515,10 +589,13 @@ ofw_real_setprop(ofw_t ofw, phandle_t package, const char *propname,
|
||||
args.propname = ofw_real_map(propname, strlen(propname) + 1);
|
||||
args.buf = ofw_real_map(buf, len);
|
||||
args.len = len;
|
||||
if (args.propname == 0 || args.buf == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.propname == 0 || args.buf == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.size);
|
||||
}
|
||||
@ -527,6 +604,7 @@ ofw_real_setprop(ofw_t ofw, phandle_t package, const char *propname,
|
||||
static ssize_t
|
||||
ofw_real_canon(ofw_t ofw, const char *device, char *buf, size_t len)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -534,22 +612,25 @@ ofw_real_canon(ofw_t ofw, const char *device, char *buf, size_t len)
|
||||
cell_t device;
|
||||
cell_t buf;
|
||||
cell_t len;
|
||||
cell_t size;
|
||||
} args = {
|
||||
(cell_t)"canon",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
int32_t size;
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"canon";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.device = ofw_real_map(device, strlen(device) + 1);
|
||||
args.buf = ofw_real_map(buf, len);
|
||||
args.len = len;
|
||||
if (args.device == 0 || args.buf == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.device == 0 || args.buf == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_unmap(args.buf, buf, len);
|
||||
|
||||
ofw_real_stop();
|
||||
@ -560,25 +641,29 @@ ofw_real_canon(ofw_t ofw, const char *device, char *buf, size_t len)
|
||||
static phandle_t
|
||||
ofw_real_finddevice(ofw_t ofw, const char *device)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t device;
|
||||
cell_t package;
|
||||
} args = {
|
||||
(cell_t)"finddevice",
|
||||
1,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"finddevice";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.device = ofw_real_map(device, strlen(device) + 1);
|
||||
if (args.device == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.device == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.package);
|
||||
}
|
||||
@ -587,6 +672,7 @@ ofw_real_finddevice(ofw_t ofw, const char *device)
|
||||
static ssize_t
|
||||
ofw_real_instance_to_path(ofw_t ofw, ihandle_t instance, char *buf, size_t len)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -594,22 +680,25 @@ ofw_real_instance_to_path(ofw_t ofw, ihandle_t instance, char *buf, size_t len)
|
||||
cell_t instance;
|
||||
cell_t buf;
|
||||
cell_t len;
|
||||
cell_t size;
|
||||
} args = {
|
||||
(cell_t)"instance-to-path",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
int32_t size;
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"instance-to-path";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.instance = instance;
|
||||
args.buf = ofw_real_map(buf, len);
|
||||
args.len = len;
|
||||
if (args.buf == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.buf == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_unmap(args.buf, buf, len);
|
||||
|
||||
ofw_real_stop();
|
||||
@ -620,6 +709,7 @@ ofw_real_instance_to_path(ofw_t ofw, ihandle_t instance, char *buf, size_t len)
|
||||
static ssize_t
|
||||
ofw_real_package_to_path(ofw_t ofw, phandle_t package, char *buf, size_t len)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -627,22 +717,25 @@ ofw_real_package_to_path(ofw_t ofw, phandle_t package, char *buf, size_t len)
|
||||
cell_t package;
|
||||
cell_t buf;
|
||||
cell_t len;
|
||||
cell_t size;
|
||||
} args = {
|
||||
(cell_t)"package-to-path",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
int32_t size;
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"package-to-path";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.package = package;
|
||||
args.buf = ofw_real_map(buf, len);
|
||||
args.len = len;
|
||||
if (args.buf == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.buf == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_unmap(args.buf, buf, len);
|
||||
|
||||
ofw_real_stop();
|
||||
@ -654,6 +747,7 @@ static int
|
||||
ofw_real_call_method(ofw_t ofw, ihandle_t instance, const char *method,
|
||||
int nargs, int nreturns, cell_t *args_and_returns)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -661,14 +755,14 @@ ofw_real_call_method(ofw_t ofw, ihandle_t instance, const char *method,
|
||||
cell_t method;
|
||||
cell_t instance;
|
||||
cell_t args_n_results[12];
|
||||
} args = {
|
||||
(cell_t)"call-method",
|
||||
2,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
cell_t *cp, *ap;
|
||||
int n;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"call-method";
|
||||
args.nargs = 2;
|
||||
args.nreturns = 1;
|
||||
|
||||
if (nargs > 6)
|
||||
return (-1);
|
||||
|
||||
@ -681,10 +775,13 @@ ofw_real_call_method(ofw_t ofw, ihandle_t instance, const char *method,
|
||||
ap = args_and_returns;
|
||||
for (cp = args.args_n_results + (n = nargs); --n >= 0;)
|
||||
*--cp = *(ap++);
|
||||
if (args.method == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.method == 0 ||
|
||||
openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
if (args.args_n_results[nargs])
|
||||
return (args.args_n_results[nargs]);
|
||||
@ -693,6 +790,39 @@ ofw_real_call_method(ofw_t ofw, ihandle_t instance, const char *method,
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
ofw_real_interpret(ofw_t ofw, const char *cmd, int nreturns,
|
||||
unsigned long *returns)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t slot[16];
|
||||
} args;
|
||||
cell_t status;
|
||||
int i = 0, j = 0;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"interpret";
|
||||
args.nargs = 1;
|
||||
|
||||
ofw_real_start();
|
||||
args.nreturns = ++nreturns;
|
||||
args.slot[i++] = ofw_real_map(cmd, strlen(cmd) + 1);
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
status = args.slot[i++];
|
||||
while (i < 1 + nreturns)
|
||||
returns[j++] = args.slot[i++];
|
||||
return (status);
|
||||
}
|
||||
|
||||
/*
|
||||
* Device I/O functions
|
||||
*/
|
||||
@ -701,26 +831,29 @@ ofw_real_call_method(ofw_t ofw, ihandle_t instance, const char *method,
|
||||
static ihandle_t
|
||||
ofw_real_open(ofw_t ofw, const char *device)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t device;
|
||||
cell_t instance;
|
||||
} args = {
|
||||
(cell_t)"open",
|
||||
1,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"open";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.device = ofw_real_map(device, strlen(device) + 1);
|
||||
if (args.device == 0 || openfirmware(&args) == -1
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.device == 0 || openfirmware((void *)argsptr) == -1
|
||||
|| args.instance == 0) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.instance);
|
||||
}
|
||||
@ -729,25 +862,29 @@ ofw_real_open(ofw_t ofw, const char *device)
|
||||
static void
|
||||
ofw_real_close(ofw_t ofw, ihandle_t instance)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t instance;
|
||||
} args = {
|
||||
(cell_t)"close",
|
||||
1,
|
||||
0,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"close";
|
||||
args.nargs = 1;
|
||||
args.nreturns = 0;
|
||||
args.instance = instance;
|
||||
openfirmware(&args);
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
openfirmware((void *)argsptr);
|
||||
ofw_real_stop();
|
||||
}
|
||||
|
||||
/* Read from an instance. */
|
||||
static ssize_t
|
||||
ofw_real_read(ofw_t ofw, ihandle_t instance, void *addr, size_t len)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -755,22 +892,24 @@ ofw_real_read(ofw_t ofw, ihandle_t instance, void *addr, size_t len)
|
||||
cell_t instance;
|
||||
cell_t addr;
|
||||
cell_t len;
|
||||
cell_t actual;
|
||||
} args = {
|
||||
(cell_t)"read",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
int32_t actual;
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"read";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.instance = instance;
|
||||
args.addr = ofw_real_map(addr, len);
|
||||
args.len = len;
|
||||
if (args.addr == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.addr == 0 || openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_unmap(args.addr, addr, len);
|
||||
|
||||
ofw_real_stop();
|
||||
@ -781,6 +920,7 @@ ofw_real_read(ofw_t ofw, ihandle_t instance, void *addr, size_t len)
|
||||
static ssize_t
|
||||
ofw_real_write(ofw_t ofw, ihandle_t instance, const void *addr, size_t len)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -788,22 +928,24 @@ ofw_real_write(ofw_t ofw, ihandle_t instance, const void *addr, size_t len)
|
||||
cell_t instance;
|
||||
cell_t addr;
|
||||
cell_t len;
|
||||
cell_t actual;
|
||||
} args = {
|
||||
(cell_t)"write",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
int32_t actual;
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"write";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
ofw_real_start();
|
||||
|
||||
args.instance = instance;
|
||||
args.addr = ofw_real_map(addr, len);
|
||||
args.len = len;
|
||||
if (args.addr == 0 || openfirmware(&args) == -1) {
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (args.addr == 0 || openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.actual);
|
||||
}
|
||||
@ -812,6 +954,7 @@ ofw_real_write(ofw_t ofw, ihandle_t instance, const void *addr, size_t len)
|
||||
static int
|
||||
ofw_real_seek(ofw_t ofw, ihandle_t instance, u_int64_t pos)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -820,17 +963,23 @@ ofw_real_seek(ofw_t ofw, ihandle_t instance, u_int64_t pos)
|
||||
cell_t poshi;
|
||||
cell_t poslo;
|
||||
cell_t status;
|
||||
} args = {
|
||||
(cell_t)"seek",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.name = (cell_t)(uintptr_t)"seek";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
args.instance = instance;
|
||||
args.poshi = pos >> 32;
|
||||
args.poslo = pos;
|
||||
if (openfirmware(&args) == -1)
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return (-1);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return (args.status);
|
||||
}
|
||||
|
||||
@ -842,6 +991,7 @@ ofw_real_seek(ofw_t ofw, ihandle_t instance, u_int64_t pos)
|
||||
static caddr_t
|
||||
ofw_real_claim(ofw_t ofw, void *virt, size_t size, u_int align)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
@ -850,39 +1000,49 @@ ofw_real_claim(ofw_t ofw, void *virt, size_t size, u_int align)
|
||||
cell_t size;
|
||||
cell_t align;
|
||||
cell_t baseaddr;
|
||||
} args = {
|
||||
(cell_t)"claim",
|
||||
3,
|
||||
1,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.virt = (cell_t)virt;
|
||||
args.name = (cell_t)(uintptr_t)"claim";
|
||||
args.nargs = 3;
|
||||
args.nreturns = 1;
|
||||
|
||||
args.virt = (cell_t)(uintptr_t)virt;
|
||||
args.size = size;
|
||||
args.align = align;
|
||||
if (openfirmware(&args) == -1)
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
if (openfirmware((void *)argsptr) == -1) {
|
||||
ofw_real_stop();
|
||||
return ((void *)-1);
|
||||
return ((void *)args.baseaddr);
|
||||
}
|
||||
ofw_real_unmap(argsptr, &args, sizeof(args));
|
||||
ofw_real_stop();
|
||||
return ((void *)(uintptr_t)args.baseaddr);
|
||||
}
|
||||
|
||||
/* Release an area of memory. */
|
||||
static void
|
||||
ofw_real_release(ofw_t ofw, void *virt, size_t size)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
cell_t virt;
|
||||
cell_t size;
|
||||
} args = {
|
||||
(cell_t)"release",
|
||||
2,
|
||||
0,
|
||||
};
|
||||
} args;
|
||||
|
||||
args.virt = (cell_t)virt;
|
||||
args.name = (cell_t)(uintptr_t)"release";
|
||||
args.nargs = 2;
|
||||
args.nreturns = 0;
|
||||
|
||||
args.virt = (cell_t)(uintptr_t)virt;
|
||||
args.size = size;
|
||||
openfirmware(&args);
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
openfirmware((void *)argsptr);
|
||||
ofw_real_stop();
|
||||
}
|
||||
|
||||
/*
|
||||
@ -893,36 +1053,44 @@ ofw_real_release(ofw_t ofw, void *virt, size_t size)
|
||||
static void
|
||||
ofw_real_enter(ofw_t ofw)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
} args = {
|
||||
(cell_t)"enter",
|
||||
0,
|
||||
0,
|
||||
};
|
||||
} args;
|
||||
|
||||
openfirmware(&args);
|
||||
args.name = (cell_t)(uintptr_t)"enter";
|
||||
args.nargs = 0;
|
||||
args.nreturns = 0;
|
||||
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
openfirmware((void *)argsptr);
|
||||
/* We may come back. */
|
||||
ofw_real_stop();
|
||||
}
|
||||
|
||||
/* Shut down and drop back to the Open Firmware interface. */
|
||||
static void
|
||||
ofw_real_exit(ofw_t ofw)
|
||||
{
|
||||
vm_offset_t argsptr;
|
||||
struct {
|
||||
cell_t name;
|
||||
cell_t nargs;
|
||||
cell_t nreturns;
|
||||
} args = {
|
||||
(cell_t)"exit",
|
||||
0,
|
||||
0,
|
||||
};
|
||||
} args;
|
||||
|
||||
openfirmware(&args);
|
||||
args.name = (cell_t)(uintptr_t)"exit";
|
||||
args.nargs = 0;
|
||||
args.nreturns = 0;
|
||||
|
||||
ofw_real_start();
|
||||
argsptr = ofw_real_map(&args, sizeof(args));
|
||||
openfirmware((void *)argsptr);
|
||||
for (;;) /* just in case */
|
||||
;
|
||||
ofw_real_stop();
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user