Module Name: src
Committed By: martin
Date: Mon Jan 23 12:46:14 UTC 2023
Modified Files:
src/sys/dev/pci [netbsd-8]: piixpm.c piixpmreg.h
Log Message:
Pull up the following revisions, requested by msaitoh in ticket #1790:
sys/dev/pci/piixpm.c 1.66,1.68-1.72 via patch
sys/dev/pci/piixpmreg.h 1.13
Add support new AMD chipsets that do not have indirect access
I/O ports.
To generate a diff of this commit:
cvs rdiff -u -r1.52.6.3 -r1.52.6.4 src/sys/dev/pci/piixpm.c
cvs rdiff -u -r1.7.22.2 -r1.7.22.3 src/sys/dev/pci/piixpmreg.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/pci/piixpm.c
diff -u src/sys/dev/pci/piixpm.c:1.52.6.3 src/sys/dev/pci/piixpm.c:1.52.6.4
--- src/sys/dev/pci/piixpm.c:1.52.6.3 Tue Nov 30 11:48:29 2021
+++ src/sys/dev/pci/piixpm.c Mon Jan 23 12:46:14 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: piixpm.c,v 1.52.6.3 2021/11/30 11:48:29 martin Exp $ */
+/* $NetBSD: piixpm.c,v 1.52.6.4 2023/01/23 12:46:14 martin Exp $ */
/* $OpenBSD: piixpm.c,v 1.39 2013/10/01 20:06:02 sf Exp $ */
/*
@@ -22,7 +22,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: piixpm.c,v 1.52.6.3 2021/11/30 11:48:29 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: piixpm.c,v 1.52.6.4 2023/01/23 12:46:14 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -51,7 +51,7 @@ __KERNEL_RCSID(0, "$NetBSD: piixpm.c,v 1
#define PIIXPM_IS_CSB5(sc) \
(PCI_VENDOR((sc)->sc_id) == PCI_VENDOR_SERVERWORKS && \
- PCI_PRODUCT((sc)->sc_id) == PCI_PRODUCT_SERVERWORKS_CSB5)
+ PCI_PRODUCT((sc)->sc_id) == PCI_PRODUCT_SERVERWORKS_CSB5)
#define PIIXPM_DELAY 200
#define PIIXPM_TIMEOUT 1
@@ -75,20 +75,20 @@ __KERNEL_RCSID(0, "$NetBSD: piixpm.c,v 1
struct piixpm_smbus {
int sda;
int sda_save;
- struct piixpm_softc *softc;
+ struct piixpm_softc *softc;
};
struct piixpm_softc {
device_t sc_dev;
bus_space_tag_t sc_iot;
-#define sc_pm_iot sc_iot
-#define sc_smb_iot sc_iot
+ bus_space_tag_t sc_sb800_bt;
bus_space_handle_t sc_pm_ioh;
- bus_space_handle_t sc_sb800_ioh;
+ bus_space_handle_t sc_sb800_bh;
bus_space_handle_t sc_smb_ioh;
void * sc_smb_ih;
int sc_poll;
+ bool sc_sb800_mmio; /* Use MMIO access */
bool sc_sb800_selen; /* Use SMBUS0SEL */
pci_chipset_tag_t sc_pc;
@@ -121,6 +121,7 @@ static void piixpm_chdet(device_t, devic
static bool piixpm_suspend(device_t, const pmf_qual_t *);
static bool piixpm_resume(device_t, const pmf_qual_t *);
+static uint8_t piixpm_sb800_pmread(struct piixpm_softc *, bus_size_t);
static int piixpm_sb800_init(struct piixpm_softc *);
static void piixpm_csb5_reset(void *);
static int piixpm_i2c_sb600_acquire_bus(void *, int);
@@ -217,7 +218,7 @@ piixpm_attach(device_t parent, device_t
/* Map I/O space */
base = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_PM_BASE);
- if (base == 0 || bus_space_map(sc->sc_pm_iot, PCI_MAPREG_IO_ADDR(base),
+ if (base == 0 || bus_space_map(sc->sc_iot, PCI_MAPREG_IO_ADDR(base),
PIIX_PM_SIZE, 0, &sc->sc_pm_ioh)) {
aprint_error_dev(self,
"can't map power management I/O space\n");
@@ -229,13 +230,22 @@ piixpm_attach(device_t parent, device_t
* PIIX4 and PIIX4E have a bug in the timer latch, see Errata #20
* in the "Specification update" (document #297738).
*/
- acpipmtimer_attach(self, sc->sc_pm_iot, sc->sc_pm_ioh, PIIX_PM_PMTMR,
+ acpipmtimer_attach(self, sc->sc_iot, sc->sc_pm_ioh, PIIX_PM_PMTMR,
(PCI_REVISION(pa->pa_class) < 3) ? ACPIPMT_BADLATCH : 0);
nopowermanagement:
/* SB800 rev 0x40+, AMD HUDSON and newer need special initialization */
if (PIIXPM_IS_FCHGRP(sc) || PIIXPM_IS_SB800GRP(sc)) {
+ /* Newer chips don't support I/O access */
+ if (PIIXPM_IS_KERNCZ(sc) && (sc->sc_rev >= 0x51)) {
+ sc->sc_sb800_mmio = true;
+ sc->sc_sb800_bt = pa->pa_memt;
+ } else {
+ sc->sc_sb800_mmio = false;
+ sc->sc_sb800_bt = pa->pa_iot;
+ }
+
if (piixpm_sb800_init(sc) == 0) {
/* Read configuration */
conf = bus_space_read_1(sc->sc_iot,
@@ -260,7 +270,7 @@ nopowermanagement:
/* Map I/O space */
base = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_SMB_BASE) & 0xffff;
if (base == 0 ||
- bus_space_map(sc->sc_smb_iot, PCI_MAPREG_IO_ADDR(base),
+ bus_space_map(sc->sc_iot, PCI_MAPREG_IO_ADDR(base),
PIIX_SMB_SIZE, 0, &sc->sc_smb_ioh)) {
aprint_error_dev(self, "can't map smbus I/O space\n");
return;
@@ -395,18 +405,37 @@ piixpm_resume(device_t dv, const pmf_qua
return true;
}
+static uint8_t
+piixpm_sb800_pmread(struct piixpm_softc *sc, bus_size_t offset)
+{
+ bus_space_tag_t sbt = sc->sc_sb800_bt;
+ bus_space_handle_t sbh = sc->sc_sb800_bh;
+ uint8_t val;
+
+ if (sc->sc_sb800_mmio)
+ val = bus_space_read_1(sbt, sbh, offset);
+ else {
+ bus_space_write_1(sbt, sbh, SB800_INDIRECTIO_INDEX, offset);
+ val = bus_space_read_1(sbt, sbh, SB800_INDIRECTIO_DATA);
+ }
+
+ return val;
+}
+
/*
* Extract SMBus base address from SB800 Power Management (PM) registers.
* The PM registers can be accessed either through indirect I/O (CD6/CD7) or
- * direct mapping if AcpiMMioDecodeEn is enabled. Since this function is only
- * called once it uses indirect I/O for simplicity.
+ * direct mapping if AcpiMMioDecodeEn is enabled. Newer devices support MMIO
+ * access only.
*/
static int
piixpm_sb800_init(struct piixpm_softc *sc)
{
- bus_space_tag_t iot = sc->sc_iot;
- bus_space_handle_t ioh; /* indirect I/O handle */
- uint16_t val, base_addr;
+ bus_space_tag_t sbt = sc->sc_sb800_bt;
+ bus_space_handle_t sbh; /* indirect memory or I/O handle */
+ int rv;
+ uint16_t base_addr;
+ uint8_t lo, hi;
bool enabled;
if (PIIXPM_IS_KERNCZ(sc) ||
@@ -415,50 +444,48 @@ piixpm_sb800_init(struct piixpm_softc *s
else
sc->sc_numbusses = 4;
- /* Fetch SMB base address */
- if (bus_space_map(iot,
- SB800_INDIRECTIO_BASE, SB800_INDIRECTIO_SIZE, 0, &ioh)) {
- device_printf(sc->sc_dev, "couldn't map indirect I/O space\n");
+ /* Check SMBus enable bit and Fetch SMB base address */
+ if (sc->sc_sb800_mmio)
+ rv = bus_space_map(sbt, SB800_FCH_PM_BASE,
+ SB800_FCH_PM_SIZE, 0, &sbh);
+ else
+ rv = bus_space_map(sbt, SB800_INDIRECTIO_BASE,
+ SB800_INDIRECTIO_SIZE, 0, &sbh);
+ if (rv != 0) {
+ device_printf(sc->sc_dev, "couldn't map indirect space\n");
return EBUSY;
}
+ sc->sc_sb800_bh = sbh;
if (PIIXPM_IS_FCHGRP(sc)) {
- bus_space_write_1(iot, ioh, SB800_INDIRECTIO_INDEX,
- AMDFCH41_PM_DECODE_EN0);
- val = bus_space_read_1(iot, ioh, SB800_INDIRECTIO_DATA);
- enabled = val & AMDFCH41_SMBUS_EN;
+ lo = piixpm_sb800_pmread(sc, AMDFCH41_PM_DECODE_EN0);
+ enabled = lo & AMDFCH41_SMBUS_EN;
if (!enabled)
return ENOENT;
- bus_space_write_1(iot, ioh, SB800_INDIRECTIO_INDEX,
- AMDFCH41_PM_DECODE_EN1);
- val = bus_space_read_1(iot, ioh, SB800_INDIRECTIO_DATA) << 8;
- base_addr = val;
+ hi = piixpm_sb800_pmread(sc, AMDFCH41_PM_DECODE_EN1);
+ base_addr = (uint16_t)hi << 8;
} else {
uint8_t data;
- bus_space_write_1(iot, ioh, SB800_INDIRECTIO_INDEX,
- SB800_PM_SMBUS0EN_LO);
- val = bus_space_read_1(iot, ioh, SB800_INDIRECTIO_DATA);
- enabled = val & SB800_PM_SMBUS0EN_ENABLE;
+ lo = piixpm_sb800_pmread(sc, SB800_PM_SMBUS0EN_LO);
+ enabled = lo & SB800_PM_SMBUS0EN_ENABLE;
if (!enabled)
return ENOENT;
- bus_space_write_1(iot, ioh, SB800_INDIRECTIO_INDEX,
- SB800_PM_SMBUS0EN_HI);
- val |= bus_space_read_1(iot, ioh, SB800_INDIRECTIO_DATA) << 8;
- base_addr = val & SB800_PM_SMBUS0EN_BADDR;
+ hi = piixpm_sb800_pmread(sc, SB800_PM_SMBUS0EN_HI);
+ base_addr = ((uint16_t)hi << 8) & SB800_PM_SMBUS0EN_BADDR;
- bus_space_write_1(iot, ioh, SB800_INDIRECTIO_INDEX,
+ bus_space_write_1(sbt, sbh, SB800_INDIRECTIO_INDEX,
SB800_PM_SMBUS0SELEN);
- data = bus_space_read_1(iot, ioh, SB800_INDIRECTIO_DATA);
+ data = bus_space_read_1(sbt, sbh, SB800_INDIRECTIO_DATA);
if ((data & SB800_PM_USE_SMBUS0SEL) != 0)
sc->sc_sb800_selen = true;
}
- sc->sc_sb800_ioh = ioh;
- aprint_debug_dev(sc->sc_dev, "SMBus @ 0x%04x\n", base_addr);
+ aprint_debug_dev(sc->sc_dev, "SMBus %s access @ 0x%04x\n",
+ sc->sc_sb800_mmio ? "memory" : "I/O", base_addr);
- if (bus_space_map(iot, PCI_MAPREG_IO_ADDR(base_addr),
+ if (bus_space_map(sc->sc_iot, PCI_MAPREG_IO_ADDR(base_addr),
SB800_SMB_SIZE, 0, &sc->sc_smb_ioh)) {
aprint_error_dev(sc->sc_dev, "can't map smbus I/O space\n");
return EBUSY;
@@ -522,14 +549,14 @@ piixpm_i2c_sb800_acquire_bus(void *cooki
if (!cold)
mutex_enter(&sc->sc_i2c_mutex);
- sctl = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_SC);
+ sctl = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_SC);
for (i = 0; i < PIIX_SB800_TIMEOUT; i++) {
/* Try to acquire the host semaphore */
sctl &= ~PIIX_SMB_SC_SEMMASK;
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_SC,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_SC,
sctl | PIIX_SMB_SC_HOSTSEM);
- sctl = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ sctl = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_SC);
if ((sctl & PIIX_SMB_SC_HOSTSEM) != 0)
break;
@@ -554,17 +581,18 @@ piixpm_i2c_sb800_acquire_bus(void *cooki
mask = SB800_PM_SMBUS0_MASK_C;
}
- bus_space_write_1(sc->sc_iot, sc->sc_sb800_ioh,
- SB800_INDIRECTIO_INDEX, index);
- reg = bus_space_read_1(sc->sc_iot, sc->sc_sb800_ioh,
- SB800_INDIRECTIO_DATA);
+ reg = piixpm_sb800_pmread(sc, index);
old_sda = __SHIFTOUT(reg, mask);
if (smbus->sda != old_sda) {
reg &= ~mask;
reg |= __SHIFTIN(smbus->sda, mask);
- bus_space_write_1(sc->sc_iot, sc->sc_sb800_ioh,
- SB800_INDIRECTIO_DATA, reg);
+ /*
+ * SB800_INDIRECTIO_INDEX is already set on I/O access,
+ * so it's not required to write it again.
+ */
+ bus_space_write_1(sc->sc_sb800_bt, sc->sc_sb800_bh,
+ sc->sc_sb800_mmio ? index : SB800_INDIRECTIO_DATA, reg);
}
/* Save the old port number */
@@ -592,22 +620,23 @@ piixpm_i2c_sb800_release_bus(void *cooki
mask = SB800_PM_SMBUS0_MASK_C;
}
- bus_space_write_1(sc->sc_iot, sc->sc_sb800_ioh,
- SB800_INDIRECTIO_INDEX, index);
if (smbus->sda != smbus->sda_save) {
/* Restore the port number */
- reg = bus_space_read_1(sc->sc_iot, sc->sc_sb800_ioh,
- SB800_INDIRECTIO_DATA);
+ reg = piixpm_sb800_pmread(sc, index);
reg &= ~mask;
reg |= __SHIFTIN(smbus->sda_save, mask);
- bus_space_write_1(sc->sc_iot, sc->sc_sb800_ioh,
- SB800_INDIRECTIO_DATA, reg);
+ /*
+ * SB800_INDIRECTIO_INDEX is already set on I/O access,
+ * so it's not required to write it again.
+ */
+ bus_space_write_1(sc->sc_sb800_bt, sc->sc_sb800_bh,
+ sc->sc_sb800_mmio ? index : SB800_INDIRECTIO_DATA, reg);
}
- /* Relase the host semaphore */
- sctl = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_SC);
+ /* Release the host semaphore */
+ sctl = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_SC);
sctl &= ~PIIX_SMB_SC_SEMMASK;
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_SC,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_SC,
sctl | PIIX_SMB_SC_CLRHOSTSEM);
if (!cold)
@@ -629,15 +658,15 @@ piixpm_i2c_exec(void *cookie, i2c_op_t o
device_xname(sc->sc_dev), op, addr, cmdlen, len, flags));
/* Clear status bits */
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HS,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HS,
PIIX_SMB_HS_INTR | PIIX_SMB_HS_DEVERR |
PIIX_SMB_HS_BUSERR | PIIX_SMB_HS_FAILED);
- bus_space_barrier(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HS, 1,
+ bus_space_barrier(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HS, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
/* Wait for bus to be idle */
for (retries = 100; retries > 0; retries--) {
- st = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ st = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HS);
if (!(st & PIIX_SMB_HS_BUSY))
break;
@@ -662,27 +691,27 @@ piixpm_i2c_exec(void *cookie, i2c_op_t o
sc->sc_i2c_xfer.error = 0;
/* Set slave address and transfer direction */
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_TXSLVA,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_TXSLVA,
PIIX_SMB_TXSLVA_ADDR(addr) |
(I2C_OP_READ_P(op) ? PIIX_SMB_TXSLVA_READ : 0));
b = cmdbuf;
if (cmdlen > 0)
/* Set command byte */
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HCMD, b[0]);
if (I2C_OP_WRITE_P(op)) {
/* Write data */
b = buf;
if (cmdlen == 0 && len == 1)
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HCMD, b[0]);
else if (len > 0)
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HD0, b[0]);
if (len > 1)
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HD1, b[1]);
}
@@ -704,7 +733,7 @@ piixpm_i2c_exec(void *cookie, i2c_op_t o
/* Start transaction */
ctl |= PIIX_SMB_HC_START;
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HC, ctl);
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HC, ctl);
if (flags & I2C_F_POLL) {
/* Poll for completion */
@@ -713,7 +742,7 @@ piixpm_i2c_exec(void *cookie, i2c_op_t o
else
DELAY(PIIXPM_DELAY);
for (retries = 1000; retries > 0; retries--) {
- st = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ st = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HS);
if ((st & PIIX_SMB_HS_BUSY) == 0)
break;
@@ -738,14 +767,14 @@ timeout:
* Transfer timeout. Kill the transaction and clear status bits.
*/
aprint_error_dev(sc->sc_dev, "timeout, status 0x%x\n", st);
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HC,
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HC,
PIIX_SMB_HC_KILL);
DELAY(PIIXPM_DELAY);
- st = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HS);
+ st = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HS);
if ((st & PIIX_SMB_HS_FAILED) == 0)
aprint_error_dev(sc->sc_dev,
"transaction abort failed, status 0x%x\n", st);
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HS, st);
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HS, st);
/*
* CSB5 needs hard reset to unlock the smbus after timeout.
*/
@@ -763,7 +792,7 @@ piixpm_intr(void *arg)
size_t len;
/* Read status */
- st = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HS);
+ st = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HS);
if ((st & PIIX_SMB_HS_BUSY) != 0 || (st & (PIIX_SMB_HS_INTR |
PIIX_SMB_HS_DEVERR | PIIX_SMB_HS_BUSERR |
PIIX_SMB_HS_FAILED)) == 0)
@@ -773,7 +802,7 @@ piixpm_intr(void *arg)
DPRINTF(("%s: intr st %#x\n", device_xname(sc->sc_dev), st & 0xff));
/* Clear status bits */
- bus_space_write_1(sc->sc_smb_iot, sc->sc_smb_ioh, PIIX_SMB_HS, st);
+ bus_space_write_1(sc->sc_iot, sc->sc_smb_ioh, PIIX_SMB_HS, st);
/* Check for errors */
if (st & (PIIX_SMB_HS_DEVERR | PIIX_SMB_HS_BUSERR |
@@ -790,10 +819,10 @@ piixpm_intr(void *arg)
b = sc->sc_i2c_xfer.buf;
len = sc->sc_i2c_xfer.len;
if (len > 0)
- b[0] = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ b[0] = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HD0);
if (len > 1)
- b[1] = bus_space_read_1(sc->sc_smb_iot, sc->sc_smb_ioh,
+ b[1] = bus_space_read_1(sc->sc_iot, sc->sc_smb_ioh,
PIIX_SMB_HD1);
}
Index: src/sys/dev/pci/piixpmreg.h
diff -u src/sys/dev/pci/piixpmreg.h:1.7.22.2 src/sys/dev/pci/piixpmreg.h:1.7.22.3
--- src/sys/dev/pci/piixpmreg.h:1.7.22.2 Wed Aug 5 16:11:56 2020
+++ src/sys/dev/pci/piixpmreg.h Mon Jan 23 12:46:14 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: piixpmreg.h,v 1.7.22.2 2020/08/05 16:11:56 martin Exp $ */
+/* $NetBSD: piixpmreg.h,v 1.7.22.3 2023/01/23 12:46:14 martin Exp $ */
/* $OpenBSD: piixreg.h,v 1.3 2006/01/03 22:39:03 grange Exp $ */
/*-
@@ -119,6 +119,10 @@
#define SB800_INDIRECTIO_INDEX 0
#define SB800_INDIRECTIO_DATA 1
+/* In the MMIO area */
+#define SB800_FCH_PM_BASE 0xfed80300
+#define SB800_FCH_PM_SIZE 8
+
#define SB800_PM_SMBUS0EN_LO 0x2c
#define SB800_PM_SMBUS0EN_HI 0x2d
#define SB800_PM_SMBUS0EN_ENABLE __BIT(0) /* Function enable */
