static int
atkbdc_probe(device_t dev)
{
int error;
int rid;
struct resource *port;
/* Check isapnp ids */
if (isa_get_vendorid(dev))
return (ENXIO);
device_set_desc(dev, "keyboard controller (i8042)");
rid = 0;
port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, IO_KBDSIZE, RF_ACTIVE);
if (!port)
return ENXIO;
error = atkbdc_probe_unit(device_get_unit(dev), rman_get_start(port));
bus_release_resource(dev, SYS_RES_IOPORT, rid, port);
return error;
}
static int
atkbdc_ebus_probe(device_t dev)
{
struct resource *port0, *port1;
u_long count, start;
int error, rid;
if (strcmp(ofw_bus_get_name(dev), "8042") != 0)
return (ENXIO);
/*
* On AXi and AXmp boards the NS16550 (used to connect keyboard/
* mouse) share their IRQ lines with the i8042. Any IRQ activity
* (typically during attach) of the NS16550 used to connect the
* keyboard when actually the PS/2 keyboard is selected in OFW
* causes interaction with the OBP i8042 driver resulting in a
* hang and vice versa. As RS232 keyboards and mice obviously
* aren't meant to be used in parallel with PS/2 ones on these
* boards don't attach to the i8042 in case the PS/2 keyboard
* isn't selected in order to prevent such hangs.
* Note that it's not sufficient here to rely on the '8042' node
* only showing up when a PS/2 keyboard is actually connected as
* the user still might have adjusted the 'keyboard' alias to
* point to the RS232 keyboard.
*/
if ((!strcmp(sparc64_model, "SUNW,UltraAX-MP") ||
!strcmp(sparc64_model, "SUNW,UltraSPARC-IIi-Engine")) &&
OF_finddevice("keyboard") != ofw_bus_get_node(dev)) {
device_disable(dev);
return (ENXIO);
}
device_set_desc(dev, "Keyboard controller (i8042)");
/*
* The '8042' node has two identical 8 addresses wide resources
* which are apparently meant to be used one for the keyboard
* half and the other one for the mouse half. To simplify matters
* we use one for the command/data port resource and the other
* one for the status port resource as the atkbdc(4) back-end
* expects two struct resource rather than two bus space handles.
*/
rid = 0;
if (bus_get_resource(dev, SYS_RES_MEMORY, rid, &start, &count) != 0) {
device_printf(dev,
"cannot determine command/data port resource\n");
return (ENXIO);
}
port0 = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, start, start, 1,
RF_ACTIVE);
if (port0 == NULL) {
device_printf(dev,
"cannot allocate command/data port resource\n");
return (ENXIO);
}
rid = 1;
if (bus_get_resource(dev, SYS_RES_MEMORY, rid, &start, &count) != 0) {
device_printf(dev, "cannot determine status port resource\n");
error = ENXIO;
goto fail_port0;
}
start += KBD_STATUS_PORT;
port1 = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, start, start, 1,
RF_ACTIVE);
if (port1 == NULL) {
device_printf(dev, "cannot allocate status port resource\n");
error = ENXIO;
goto fail_port0;
}
error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
if (error != 0)
device_printf(dev, "atkbdc_porbe_unit failed\n");
bus_release_resource(dev, SYS_RES_MEMORY, 1, port1);
fail_port0:
bus_release_resource(dev, SYS_RES_MEMORY, 0, port0);
return (error);
}
static int
atkbdc_isa_probe(device_t dev)
{
struct resource *port0;
struct resource *port1;
u_long start;
u_long count;
int error;
int rid;
#if defined(__i386__) || defined(__amd64__)
bus_space_tag_t tag;
bus_space_handle_t ioh1;
volatile int i;
register_t flags;
#endif
/* check PnP IDs */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
return ENXIO;
device_set_desc(dev, "Keyboard controller (i8042)");
/*
* Adjust I/O port resources.
* The AT keyboard controller uses two ports (a command/data port
* 0x60 and a status port 0x64), which may be given to us in
* one resource (0x60 through 0x64) or as two separate resources
* (0x60 and 0x64). Some brain-damaged ACPI BIOS has reversed
* command/data port and status port. Furthermore, /boot/device.hints
* may contain just one port, 0x60. We shall adjust resource settings
* so that these two ports are available as two separate resources
* in correct order.
*/
device_quiet(dev);
rid = 0;
if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
return ENXIO;
if (start == IO_KBD + KBD_STATUS_PORT) {
start = IO_KBD;
count++;
}
if (count > 1) /* adjust the count and/or start port */
bus_set_resource(dev, SYS_RES_IOPORT, rid, start, 1);
port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (port0 == NULL)
return ENXIO;
rid = 1;
if (bus_get_resource(dev, SYS_RES_IOPORT, rid, NULL, NULL) != 0)
bus_set_resource(dev, SYS_RES_IOPORT, 1,
start + KBD_STATUS_PORT, 1);
port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (port1 == NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
return ENXIO;
}
#if defined(__i386__) || defined(__amd64__)
/*
* Check if we really have AT keyboard controller. Poll status
* register until we get "all clear" indication. If no such
* indication comes, it probably means that there is no AT
* keyboard controller present. Give up in such case. Check relies
* on the fact that reading from non-existing in/out port returns
* 0xff on i386. May or may not be true on other platforms.
*/
tag = rman_get_bustag(port0);
ioh1 = rman_get_bushandle(port1);
flags = intr_disable();
for (i = 0; i != 65535; i++) {
if ((bus_space_read_1(tag, ioh1, 0) & 0x2) == 0)
break;
}
intr_restore(flags);
if (i == 65535) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
if (bootverbose)
device_printf(dev, "AT keyboard controller not found\n");
return ENXIO;
}
#endif
device_verbose(dev);
error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
return error;
}
static int
atkbdc_probe(device_t dev)
{
struct resource *port0;
struct resource *port1;
int error;
int rid;
#if defined(__i386__)
bus_space_tag_t tag;
bus_space_handle_t ioh1;
volatile int i;
#endif
/* check PnP IDs */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
return ENXIO;
device_set_desc(dev, "Keyboard controller (i8042)");
rid = 0;
port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
RF_ACTIVE);
if (port0 == NULL)
return ENXIO;
/* XXX */
if (bus_get_resource_start(dev, SYS_RES_IOPORT, 1) <= 0) {
bus_set_resource(dev, SYS_RES_IOPORT, 1,
rman_get_start(port0) + KBD_STATUS_PORT, 1);
}
rid = 1;
port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
RF_ACTIVE);
if (port1 == NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
return ENXIO;
}
#if defined(__i386__)
/*
* Check if we really have AT keyboard controller. Poll status
* register until we get "all clear" indication. If no such
* indication comes, it probably means that there is no AT
* keyboard controller present. Give up in such case. Check relies
* on the fact that reading from non-existing in/out port returns
* 0xff on i386. May or may not be true on other platforms.
*/
tag = rman_get_bustag(port0);
ioh1 = rman_get_bushandle(port1);
for (i = 65536; i != 0; --i) {
if ((bus_space_read_1(tag, ioh1, 0) & 0x2) == 0)
break;
DELAY(16);
}
if (i == 0) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
return ENXIO;
}
#endif
error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
return error;
}
