static int
geode_attach(device_t self)
{
u_int32_t reg;
u_int16_t cnfg, cba;
u_int8_t sts, rev, iid;
/*
* The address of the CBA is written to this register
* by the bios, see p161 in data sheet.
*/
reg = pci_read_config(self, SC1100_F5_SCRATCHPAD, 4);
if (reg == 0)
return ENODEV;
/* bus_space_map(sc->sc_iot, reg, 64, 0, &sc->sc_ioh)) */
geode_sc.sc_iot = I386_BUS_SPACE_IO;
geode_sc.sc_ioh = reg;
cba = bus_space_read_2(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_CBA);
if (cba != reg) {
kprintf("Geode LX: cba mismatch: cba 0x%x != reg 0x%x\n", cba, reg);
return ENODEV;
}
/* outl(cba + 0x0d, 2); ??? */
sts = bus_space_read_1(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_WDSTS);
cnfg = bus_space_read_2(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_WDCNFG);
iid = bus_space_read_1(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_IID);
rev = bus_space_read_1(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_REV);
#define WDSTSBITS "\20\x04WDRST\x03WDSMI\x02WDINT\x01WDOVF"
kprintf("Geode LX: iid %d revision %d wdstatus %b\n", iid, rev, sts, WDSTSBITS);
/* enable timer */
bus_space_write_4(geode_sc.sc_iot, geode_sc.sc_iot, GCB_TSCNFG, TSC_ENABLE);
cputimer_register(&geode_timer);
cputimer_select(&geode_timer, 0);
/* enable watchdog and configure */
bus_space_write_2(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_WDTO, 0);
sts |= WDOVF_CLEAR;
bus_space_write_1(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_WDSTS, sts);
cnfg &= ~WDCNFG_MASK;
cnfg |= WDTYPE1_RESET | WDPRES_DIV_512;
bus_space_write_2(geode_sc.sc_iot, geode_sc.sc_ioh, GCB_WDCNFG, cnfg);
wdog_register(&geode_wdog);
return 0;
}
static int
acpi_timer_attach(device_t dev)
{
char desc[40];
int i, j;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
/*
* If all tests of the counter succeed, use the ACPI-fast method. If
* at least one failed, default to using the safe routine, which reads
* the timer multiple times to get a consistent value before returning.
*/
j = 0;
for (i = 0; i < 10; i++)
j += acpi_timer_test();
if (j == 10) {
if (acpi_timer_resolution == 32) {
acpi_cputimer.name = "ACPI-fast";
acpi_cputimer.count = acpi_timer_get_timecount;
} else {
acpi_cputimer.name = "ACPI-fast24";
acpi_cputimer.count = acpi_timer_get_timecount24;
}
} else {
if (acpi_timer_resolution == 32)
acpi_cputimer.name = "ACPI-safe";
else
acpi_cputimer.name = "ACPI-safe24";
acpi_cputimer.count = acpi_timer_get_timecount_safe;
}
ksprintf(desc, "%u-bit timer at 3.579545MHz", acpi_timer_resolution);
device_set_desc_copy(dev, desc);
cputimer_register(&acpi_cputimer);
cputimer_select(&acpi_cputimer, 0);
return (0);
}
static int
acpi_timer_probe(device_t dev)
{
char desc[40];
int i, j, rid, rtype;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
if (dev != acpi_timer_dev)
return (ENXIO);
rid = 0;
rtype = AcpiGbl_FADT.XPmTimerBlock.SpaceId ?
SYS_RES_IOPORT : SYS_RES_MEMORY;
acpi_timer_reg = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);
if (acpi_timer_reg == NULL) {
device_printf(dev, "couldn't allocate resource (%s 0x%lx)\n",
(rtype == SYS_RES_IOPORT) ? "port" : "mem",
(u_long)AcpiGbl_FADT.XPmTimerBlock.Address);
return (ENXIO);
}
acpi_timer_bsh = rman_get_bushandle(acpi_timer_reg);
acpi_timer_bst = rman_get_bustag(acpi_timer_reg);
if ((AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) != 0)
acpi_counter_mask = 0xffffffff;
else
acpi_counter_mask = 0x00ffffff;
/*
* If all tests of the counter succeed, use the ACPI-fast method. If
* at least one failed, default to using the safe routine, which reads
* the timer multiple times to get a consistent value before returning.
*/
j = 0;
for (i = 0; i < 10; i++)
j += acpi_timer_test();
if (j == 10) {
if (acpi_counter_mask == 0xffffffff) {
acpi_cputimer.name = "ACPI-fast";
acpi_cputimer.count = acpi_timer_get_timecount;
} else {
acpi_cputimer.name = "ACPI-fast24";
acpi_cputimer.count = acpi_timer_get_timecount24;
}
} else {
if (acpi_counter_mask == 0xffffffff)
acpi_cputimer.name = "ACPI-safe";
else
acpi_cputimer.name = "ACPI-safe24";
acpi_cputimer.count = acpi_timer_get_timecount_safe;
}
ksprintf(desc, "%d-bit timer at 3.579545MHz",
(AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) ? 32 : 24);
device_set_desc_copy(dev, desc);
cputimer_register(&acpi_cputimer);
cputimer_select(&acpi_cputimer, 0);
/* Release the resource, we'll allocate it again during attach. */
bus_release_resource(dev, rtype, rid, acpi_timer_reg);
return (0);
}
static int
acpi_hpet_attach(device_t dev)
{
struct acpi_hpet_softc *sc;
int rid;
uint32_t val, val2;
uintmax_t freq;
ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
sc = device_get_softc(dev);
sc->dev = dev;
sc->handle = acpi_get_handle(dev);
rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->mem_res == NULL) {
/*
* We only need to make sure that main counter
* is accessable.
*/
device_printf(dev, "can't map %dB register space, try %dB\n",
HPET_MEM_WIDTH, HPET_MEM_WIDTH_MIN);
rid = 0;
sc->mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
acpi_hpet_res_start,
acpi_hpet_res_start + HPET_MEM_WIDTH_MIN - 1,
HPET_MEM_WIDTH_MIN, RF_ACTIVE);
if (sc->mem_res == NULL)
return ENOMEM;
}
/* Validate that we can access the whole region. */
if (rman_get_size(sc->mem_res) < HPET_MEM_WIDTH_MIN) {
device_printf(dev, "memory region width %ld too small\n",
rman_get_size(sc->mem_res));
bus_release_resource(dev, SYS_RES_MEMORY, rid, sc->mem_res);
return ENXIO;
}
acpi_hpet_bsh = rman_get_bushandle(sc->mem_res);
acpi_hpet_bst = rman_get_bustag(sc->mem_res);
/* Be sure timer is enabled. */
acpi_hpet_enable(sc);
/* Read basic statistics about the timer. */
val = bus_space_read_4(acpi_hpet_bst, acpi_hpet_bsh, HPET_PERIOD);
if (val == 0) {
device_printf(dev, "invalid period\n");
acpi_hpet_disable(sc);
bus_release_resource(dev, SYS_RES_MEMORY, rid, sc->mem_res);
return ENXIO;
}
freq = (1000000000000000LL + val / 2) / val;
if (bootverbose) {
val = bus_space_read_4(acpi_hpet_bst, acpi_hpet_bsh,
HPET_CAPABILITIES);
device_printf(dev,
"vend: 0x%x, rev: 0x%x, num: %d, opts:%s%s\n",
val >> 16, val & HPET_CAP_REV_ID,
(val & HPET_CAP_NUM_TIM) >> 8,
(val & HPET_CAP_LEG_RT) ? " legacy_route" : "",
(val & HPET_CAP_COUNT_SIZE) ? " 64-bit" : "");
}
if (ktestenv("debug.acpi.hpet_test"))
acpi_hpet_test(sc);
/*
* Don't attach if the timer never increments. Since the spec
* requires it to be at least 10 MHz, it has to change in 1 us.
*/
val = bus_space_read_4(acpi_hpet_bst, acpi_hpet_bsh,
HPET_MAIN_COUNTER);
DELAY(1);
val2 = bus_space_read_4(acpi_hpet_bst, acpi_hpet_bsh,
HPET_MAIN_COUNTER);
if (val == val2) {
device_printf(dev, "HPET never increments, disabling\n");
acpi_hpet_disable(sc);
bus_release_resource(dev, SYS_RES_MEMORY, rid, sc->mem_res);
return ENXIO;
}
acpi_hpet_timer.freq = freq;
device_printf(dev, "frequency %u\n", acpi_hpet_timer.freq);
cputimer_register(&acpi_hpet_timer);
cputimer_select(&acpi_hpet_timer, 0);
return 0;
}
