--- /dev/null
+What: /sys/bus/mei/devices/.../modalias
+Date: March 2013
+KernelVersion: 3.10
+Contact: Samuel Ortiz <sameo@linux.intel.com>
+ linux-mei@linux.intel.com
+Description: Stores the same MODALIAS value emitted by uevent
+ Format: mei:<mei device name>
--- /dev/null
+* Qualcomm SSBI
+
+Some Qualcomm MSM devices contain a point-to-point serial bus used to
+communicate with a limited range of devices (mostly power management
+chips).
+
+These require the following properties:
+
+- compatible: "qcom,ssbi"
+
+- qcom,controller-type
+ indicates the SSBI bus variant the controller should use to talk
+ with the slave device. This should be one of "ssbi", "ssbi2", or
+ "pmic-arbiter". The type chosen is determined by the attached
+ slave.
+
+The slave device should be the single child node of the ssbi device
+with a compatible field.
--- /dev/null
+Intel(R) Management Engine (ME) Client bus API
+===============================================
+
+
+Rationale
+=========
+MEI misc character device is useful for dedicated applications to send and receive
+data to the many FW appliance found in Intel's ME from the user space.
+However for some of the ME functionalities it make sense to leverage existing software
+stack and expose them through existing kernel subsystems.
+
+In order to plug seamlessly into the kernel device driver model we add kernel virtual
+bus abstraction on top of the MEI driver. This allows implementing linux kernel drivers
+for the various MEI features as a stand alone entities found in their respective subsystem.
+Existing device drivers can even potentially be re-used by adding an MEI CL bus layer to
+the existing code.
+
+
+MEI CL bus API
+===========
+A driver implementation for an MEI Client is very similar to existing bus
+based device drivers. The driver registers itself as an MEI CL bus driver through
+the mei_cl_driver structure:
+
+struct mei_cl_driver {
+ struct device_driver driver;
+ const char *name;
+
+ const struct mei_cl_device_id *id_table;
+
+ int (*probe)(struct mei_cl_device *dev, const struct mei_cl_id *id);
+ int (*remove)(struct mei_cl_device *dev);
+};
+
+struct mei_cl_id {
+ char name[MEI_NAME_SIZE];
+ kernel_ulong_t driver_info;
+};
+
+The mei_cl_id structure allows the driver to bind itself against a device name.
+
+To actually register a driver on the ME Client bus one must call the mei_cl_add_driver()
+API. This is typically called at module init time.
+
+Once registered on the ME Client bus, a driver will typically try to do some I/O on
+this bus and this should be done through the mei_cl_send() and mei_cl_recv()
+routines. The latter is synchronous (blocks and sleeps until data shows up).
+In order for drivers to be notified of pending events waiting for them (e.g.
+an Rx event) they can register an event handler through the
+mei_cl_register_event_cb() routine. Currently only the MEI_EVENT_RX event
+will trigger an event handler call and the driver implementation is supposed
+to call mei_recv() from the event handler in order to fetch the pending
+received buffers.
+
+
+Example
+=======
+As a theoretical example let's pretend the ME comes with a "contact" NFC IP.
+The driver init and exit routines for this device would look like:
+
+#define CONTACT_DRIVER_NAME "contact"
+
+static struct mei_cl_device_id contact_mei_cl_tbl[] = {
+ { CONTACT_DRIVER_NAME, },
+
+ /* required last entry */
+ { }
+};
+MODULE_DEVICE_TABLE(mei_cl, contact_mei_cl_tbl);
+
+static struct mei_cl_driver contact_driver = {
+ .id_table = contact_mei_tbl,
+ .name = CONTACT_DRIVER_NAME,
+
+ .probe = contact_probe,
+ .remove = contact_remove,
+};
+
+static int contact_init(void)
+{
+ int r;
+
+ r = mei_cl_driver_register(&contact_driver);
+ if (r) {
+ pr_err(CONTACT_DRIVER_NAME ": driver registration failed\n");
+ return r;
+ }
+
+ return 0;
+}
+
+static void __exit contact_exit(void)
+{
+ mei_cl_driver_unregister(&contact_driver);
+}
+
+module_init(contact_init);
+module_exit(contact_exit);
+
+And the driver's simplified probe routine would look like that:
+
+int contact_probe(struct mei_cl_device *dev, struct mei_cl_device_id *id)
+{
+ struct contact_driver *contact;
+
+ [...]
+ mei_cl_register_event_cb(dev, contact_event_cb, contact);
+
+ return 0;
+ }
+
+In the probe routine the driver basically registers an ME bus event handler
+which is as close as it can get to registering a threaded IRQ handler.
+The handler implementation will typically call some I/O routine depending on
+the pending events:
+
+#define MAX_NFC_PAYLOAD 128
+
+static void contact_event_cb(struct mei_cl_device *dev, u32 events,
+ void *context)
+{
+ struct contact_driver *contact = context;
+
+ if (events & BIT(MEI_EVENT_RX)) {
+ u8 payload[MAX_NFC_PAYLOAD];
+ int payload_size;
+
+ payload_size = mei_recv(dev, payload, MAX_NFC_PAYLOAD);
+ if (payload_size <= 0)
+ return;
+
+ /* Hook to the NFC subsystem */
+ nfc_hci_recv_frame(contact->hdev, payload, payload_size);
+ }
+}
F: drivers/tty/serial/msm_serial.h
F: drivers/tty/serial/msm_serial.c
F: drivers/*/pm8???-*
+F: drivers/ssbi/
F: include/linux/mfd/pm8xxx/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm.git
S: Maintained
<0x19c00000 0x1000>;
interrupts = <0 195 0x0>;
};
+
+ qcom,ssbi@500000 {
+ compatible = "qcom,ssbi";
+ reg = <0x500000 0x1000>;
+ qcom,controller-type = "pmic-arbiter";
+ };
};
<0x16400000 0x1000>;
interrupts = <0 154 0x0>;
};
+
+ qcom,ssbi@500000 {
+ compatible = "qcom,ssbi";
+ reg = <0x500000 0x1000>;
+ qcom,controller-type = "pmic-arbiter";
+ };
};
source "drivers/spi/Kconfig"
+source "drivers/ssbi/Kconfig"
+
source "drivers/hsi/Kconfig"
source "drivers/pps/Kconfig"
obj-$(CONFIG_CRYPTO) += crypto/
obj-$(CONFIG_SUPERH) += sh/
obj-$(CONFIG_ARCH_SHMOBILE) += sh/
+obj-$(CONFIG_SSBI) += ssbi/
ifndef CONFIG_ARCH_USES_GETTIMEOFFSET
obj-y += clocksource/
endif
.probe = pcmcia_init_one,
.remove = pcmcia_remove_one,
};
-
-static int __init pcmcia_init(void)
-{
- return pcmcia_register_driver(&pcmcia_driver);
-}
-
-static void __exit pcmcia_exit(void)
-{
- pcmcia_unregister_driver(&pcmcia_driver);
-}
+module_pcmcia_driver(pcmcia_driver);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for PCMCIA ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
-
-module_init(pcmcia_init);
-module_exit(pcmcia_exit);
.remove = bluecard_detach,
.id_table = bluecard_ids,
};
-
-static int __init init_bluecard_cs(void)
-{
- return pcmcia_register_driver(&bluecard_driver);
-}
-
-
-static void __exit exit_bluecard_cs(void)
-{
- pcmcia_unregister_driver(&bluecard_driver);
-}
-
-module_init(init_bluecard_cs);
-module_exit(exit_bluecard_cs);
+module_pcmcia_driver(bluecard_driver);
.remove = bt3c_detach,
.id_table = bt3c_ids,
};
-
-static int __init init_bt3c_cs(void)
-{
- return pcmcia_register_driver(&bt3c_driver);
-}
-
-
-static void __exit exit_bt3c_cs(void)
-{
- pcmcia_unregister_driver(&bt3c_driver);
-}
-
-module_init(init_bt3c_cs);
-module_exit(exit_bt3c_cs);
+module_pcmcia_driver(bt3c_driver);
.remove = btuart_detach,
.id_table = btuart_ids,
};
-
-static int __init init_btuart_cs(void)
-{
- return pcmcia_register_driver(&btuart_driver);
-}
-
-
-static void __exit exit_btuart_cs(void)
-{
- pcmcia_unregister_driver(&btuart_driver);
-}
-
-module_init(init_btuart_cs);
-module_exit(exit_btuart_cs);
+module_pcmcia_driver(btuart_driver);
.remove = dtl1_detach,
.id_table = dtl1_ids,
};
-
-static int __init init_dtl1_cs(void)
-{
- return pcmcia_register_driver(&dtl1_driver);
-}
-
-
-static void __exit exit_dtl1_cs(void)
-{
- pcmcia_unregister_driver(&dtl1_driver);
-}
-
-module_init(init_dtl1_cs);
-module_exit(exit_dtl1_cs);
+module_pcmcia_driver(dtl1_driver);
printk(KERN_INFO "Prom version board %d ....... V%d.%d %s",
i+1,
- (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4),
- (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF),
+ (int)(readb(apbs[i].RamIO + VERS) >> 4),
+ (int)(readb(apbs[i].RamIO + VERS) & 0xF),
boardname);
.remove = __exit_p(mxc_rnga_remove),
};
-static int __init mod_init(void)
-{
- return platform_driver_probe(&mxc_rnga_driver, mxc_rnga_probe);
-}
-
-static void __exit mod_exit(void)
-{
- platform_driver_unregister(&mxc_rnga_driver);
-}
-
-module_init(mod_init);
-module_exit(mod_exit);
+module_platform_driver_probe(mxc_rnga_driver, mxc_rnga_probe);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("H/W RNGA driver for i.MX");
.remove = tx4939_rng_remove,
};
-static int __init tx4939rng_init(void)
-{
- return platform_driver_probe(&tx4939_rng_driver, tx4939_rng_probe);
-}
-
-static void __exit tx4939rng_exit(void)
-{
- platform_driver_unregister(&tx4939_rng_driver);
-}
-
-module_init(tx4939rng_init);
-module_exit(tx4939rng_exit);
+module_platform_driver_probe(tx4939_rng_driver, tx4939_rng_probe);
MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver for TX4939");
MODULE_LICENSE("GPL");
dev = device_create(srom_class, &platform_bus,
MKDEV(srom_major, index), srom, "%d", index);
- return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+ return PTR_RET(dev);
}
/** srom_init() - Initialize the driver's module. */
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>
-#define ARIZONA_NUM_BUTTONS 6
+#define ARIZONA_MAX_MICD_RANGE 8
#define ARIZONA_ACCDET_MODE_MIC 0
#define ARIZONA_ACCDET_MODE_HPL 1
#define ARIZONA_ACCDET_MODE_HPR 2
+#define ARIZONA_HPDET_MAX 10000
+
+#define HPDET_DEBOUNCE 500
+#define DEFAULT_MICD_TIMEOUT 2000
+
struct arizona_extcon_info {
struct device *dev;
struct arizona *arizona;
struct regulator *micvdd;
struct input_dev *input;
+ u16 last_jackdet;
+
int micd_mode;
const struct arizona_micd_config *micd_modes;
int micd_num_modes;
+ const struct arizona_micd_range *micd_ranges;
+ int num_micd_ranges;
+
+ int micd_timeout;
+
bool micd_reva;
bool micd_clamp;
struct delayed_work hpdet_work;
+ struct delayed_work micd_detect_work;
+ struct delayed_work micd_timeout_work;
bool hpdet_active;
bool hpdet_done;
+ bool hpdet_retried;
int num_hpdet_res;
unsigned int hpdet_res[3];
};
static const struct arizona_micd_config micd_default_modes[] = {
- { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
{ ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 },
+ { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 },
};
-static struct {
- u16 status;
- int report;
-} arizona_lvl_to_key[ARIZONA_NUM_BUTTONS] = {
- { 0x1, BTN_0 },
- { 0x2, BTN_1 },
- { 0x4, BTN_2 },
- { 0x8, BTN_3 },
- { 0x10, BTN_4 },
- { 0x20, BTN_5 },
+static const struct arizona_micd_range micd_default_ranges[] = {
+ { .max = 11, .key = BTN_0 },
+ { .max = 28, .key = BTN_1 },
+ { .max = 54, .key = BTN_2 },
+ { .max = 100, .key = BTN_3 },
+ { .max = 186, .key = BTN_4 },
+ { .max = 430, .key = BTN_5 },
+};
+
+static const int arizona_micd_levels[] = {
+ 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46,
+ 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100,
+ 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245,
+ 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071,
+ 1257,
};
#define ARIZONA_CABLE_MECHANICAL 0
NULL,
};
+static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info);
+
+static void arizona_extcon_do_magic(struct arizona_extcon_info *info,
+ unsigned int magic)
+{
+ struct arizona *arizona = info->arizona;
+ int ret;
+
+ mutex_lock(&arizona->dapm->card->dapm_mutex);
+
+ arizona->hpdet_magic = magic;
+
+ /* Keep the HP output stages disabled while doing the magic */
+ if (magic) {
+ ret = regmap_update_bits(arizona->regmap,
+ ARIZONA_OUTPUT_ENABLES_1,
+ ARIZONA_OUT1L_ENA |
+ ARIZONA_OUT1R_ENA, 0);
+ if (ret != 0)
+ dev_warn(arizona->dev,
+ "Failed to disable headphone outputs: %d\n",
+ ret);
+ }
+
+ ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000,
+ magic);
+ if (ret != 0)
+ dev_warn(arizona->dev, "Failed to do magic: %d\n",
+ ret);
+
+ ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000,
+ magic);
+ if (ret != 0)
+ dev_warn(arizona->dev, "Failed to do magic: %d\n",
+ ret);
+
+ /* Restore the desired state while not doing the magic */
+ if (!magic) {
+ ret = regmap_update_bits(arizona->regmap,
+ ARIZONA_OUTPUT_ENABLES_1,
+ ARIZONA_OUT1L_ENA |
+ ARIZONA_OUT1R_ENA, arizona->hp_ena);
+ if (ret != 0)
+ dev_warn(arizona->dev,
+ "Failed to restore headphone outputs: %d\n",
+ ret);
+ }
+
+ mutex_unlock(&arizona->dapm->card->dapm_mutex);
+}
+
static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
{
struct arizona *arizona = info->arizona;
+ mode %= info->micd_num_modes;
+
if (arizona->pdata.micd_pol_gpio > 0)
gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
info->micd_modes[mode].gpio);
/* If we go out of range report top of range */
if (val < 100 || val > 0x3fb) {
dev_dbg(arizona->dev, "Measurement out of range\n");
- return 10000;
+ return ARIZONA_HPDET_MAX;
}
dev_dbg(arizona->dev, "HPDET read %d in range %d\n",
return val;
}
-static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading)
+static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading,
+ bool *mic)
{
struct arizona *arizona = info->arizona;
int id_gpio = arizona->pdata.hpdet_id_gpio;
if (arizona->pdata.hpdet_acc_id) {
info->hpdet_res[info->num_hpdet_res++] = *reading;
- /*
- * If the impedence is too high don't measure the
- * second ground.
- */
- if (info->num_hpdet_res == 1 && *reading >= 45) {
- dev_dbg(arizona->dev, "Skipping ground flip\n");
- info->hpdet_res[info->num_hpdet_res++] = *reading;
- }
-
- if (info->num_hpdet_res == 1) {
- dev_dbg(arizona->dev, "Flipping ground\n");
-
- regmap_update_bits(arizona->regmap,
- ARIZONA_ACCESSORY_DETECT_MODE_1,
- ARIZONA_ACCDET_SRC,
- ~info->micd_modes[0].src);
-
- regmap_update_bits(arizona->regmap,
- ARIZONA_HEADPHONE_DETECT_1,
- ARIZONA_HP_POLL, ARIZONA_HP_POLL);
- return -EAGAIN;
- }
-
/* Only check the mic directly if we didn't already ID it */
- if (id_gpio && info->num_hpdet_res == 2 &&
- !((info->hpdet_res[0] > info->hpdet_res[1] * 2))) {
+ if (id_gpio && info->num_hpdet_res == 1) {
dev_dbg(arizona->dev, "Measuring mic\n");
regmap_update_bits(arizona->regmap,
}
/* OK, got both. Now, compare... */
- dev_dbg(arizona->dev, "HPDET measured %d %d %d\n",
- info->hpdet_res[0], info->hpdet_res[1],
- info->hpdet_res[2]);
-
+ dev_dbg(arizona->dev, "HPDET measured %d %d\n",
+ info->hpdet_res[0], info->hpdet_res[1]);
/* Take the headphone impedance for the main report */
*reading = info->hpdet_res[0];
+ /* Sometimes we get false readings due to slow insert */
+ if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) {
+ dev_dbg(arizona->dev, "Retrying high impedance\n");
+ info->num_hpdet_res = 0;
+ info->hpdet_retried = true;
+ arizona_start_hpdet_acc_id(info);
+ pm_runtime_put(info->dev);
+ return -EAGAIN;
+ }
+
/*
- * Either the two grounds measure differently or we
- * measure the mic as high impedance.
+ * If we measure the mic as
*/
- if ((info->hpdet_res[0] > info->hpdet_res[1] * 2) ||
- (id_gpio && info->hpdet_res[2] > 10)) {
+ if (!id_gpio || info->hpdet_res[1] > 50) {
dev_dbg(arizona->dev, "Detected mic\n");
- info->mic = true;
+ *mic = true;
info->detecting = true;
} else {
dev_dbg(arizona->dev, "Detected headphone\n");
struct arizona *arizona = info->arizona;
int id_gpio = arizona->pdata.hpdet_id_gpio;
int report = ARIZONA_CABLE_HEADPHONE;
- unsigned int val;
int ret, reading;
+ bool mic = false;
mutex_lock(&info->lock);
ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL,
0);
- ret = arizona_hpdet_do_id(info, &reading);
+ ret = arizona_hpdet_do_id(info, &reading, &mic);
if (ret == -EAGAIN) {
goto out;
} else if (ret < 0) {
dev_err(arizona->dev, "Failed to report HP/line: %d\n",
ret);
- mutex_lock(&arizona->dapm->card->dapm_mutex);
-
- ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val);
- if (ret != 0) {
- dev_err(arizona->dev, "Failed to read output enables: %d\n",
- ret);
- val = 0;
- }
-
- if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) {
- ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to undo magic: %d\n",
- ret);
-
- ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to undo magic: %d\n",
- ret);
- }
-
- mutex_unlock(&arizona->dapm->card->dapm_mutex);
+ arizona_extcon_do_magic(info, 0);
done:
if (id_gpio)
ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
/* If we have a mic then reenable MICDET */
- if (info->mic)
+ if (mic || info->mic)
arizona_start_mic(info);
if (info->hpdet_active) {
if (info->mic)
arizona_stop_mic(info);
- ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0x4000);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
-
- ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0x4000);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
+ arizona_extcon_do_magic(info, 0x4000);
ret = regmap_update_bits(arizona->regmap,
ARIZONA_ACCESSORY_DETECT_MODE_1,
static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
{
struct arizona *arizona = info->arizona;
- unsigned int val;
+ int hp_reading = 32;
+ bool mic;
int ret;
dev_dbg(arizona->dev, "Starting identification via HPDET\n");
info->hpdet_active = true;
- arizona_extcon_pulse_micbias(info);
-
- mutex_lock(&arizona->dapm->card->dapm_mutex);
-
- ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val);
- if (ret != 0) {
- dev_err(arizona->dev, "Failed to read output enables: %d\n",
- ret);
- val = 0;
- }
-
- if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) {
- ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000,
- 0x4000);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to do magic: %d\n",
- ret);
-
- ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000,
- 0x4000);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to do magic: %d\n",
- ret);
- }
-
- mutex_unlock(&arizona->dapm->card->dapm_mutex);
+ arizona_extcon_do_magic(info, 0x4000);
ret = regmap_update_bits(arizona->regmap,
ARIZONA_ACCESSORY_DETECT_MODE_1,
goto err;
}
- ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
- ARIZONA_HP_POLL, ARIZONA_HP_POLL);
- if (ret != 0) {
- dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n",
- ret);
- goto err;
+ if (arizona->pdata.hpdet_acc_id_line) {
+ ret = regmap_update_bits(arizona->regmap,
+ ARIZONA_HEADPHONE_DETECT_1,
+ ARIZONA_HP_POLL, ARIZONA_HP_POLL);
+ if (ret != 0) {
+ dev_err(arizona->dev,
+ "Can't start HPDETL measurement: %d\n",
+ ret);
+ goto err;
+ }
+ } else {
+ arizona_hpdet_do_id(info, &hp_reading, &mic);
}
return;
info->hpdet_active = false;
}
-static irqreturn_t arizona_micdet(int irq, void *data)
+static void arizona_micd_timeout_work(struct work_struct *work)
{
- struct arizona_extcon_info *info = data;
+ struct arizona_extcon_info *info = container_of(work,
+ struct arizona_extcon_info,
+ micd_timeout_work.work);
+
+ mutex_lock(&info->lock);
+
+ dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n");
+ arizona_identify_headphone(info);
+
+ info->detecting = false;
+
+ arizona_stop_mic(info);
+
+ mutex_unlock(&info->lock);
+}
+
+static void arizona_micd_detect(struct work_struct *work)
+{
+ struct arizona_extcon_info *info = container_of(work,
+ struct arizona_extcon_info,
+ micd_detect_work.work);
struct arizona *arizona = info->arizona;
- unsigned int val, lvl;
- int ret, i;
+ unsigned int val = 0, lvl;
+ int ret, i, key;
+
+ cancel_delayed_work_sync(&info->micd_timeout_work);
mutex_lock(&info->lock);
- ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
- if (ret != 0) {
- dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
- mutex_unlock(&info->lock);
- return IRQ_NONE;
- }
+ for (i = 0; i < 10 && !(val & 0x7fc); i++) {
+ ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
+ if (ret != 0) {
+ dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
+ mutex_unlock(&info->lock);
+ return;
+ }
- dev_dbg(arizona->dev, "MICDET: %x\n", val);
+ dev_dbg(arizona->dev, "MICDET: %x\n", val);
+
+ if (!(val & ARIZONA_MICD_VALID)) {
+ dev_warn(arizona->dev, "Microphone detection state invalid\n");
+ mutex_unlock(&info->lock);
+ return;
+ }
+ }
- if (!(val & ARIZONA_MICD_VALID)) {
- dev_warn(arizona->dev, "Microphone detection state invalid\n");
+ if (i == 10 && !(val & 0x7fc)) {
+ dev_err(arizona->dev, "Failed to get valid MICDET value\n");
mutex_unlock(&info->lock);
- return IRQ_NONE;
+ return;
}
/* Due to jack detect this should never happen */
* impedence then give up and report headphones.
*/
if (info->detecting && (val & 0x3f8)) {
- if (info->jack_flips >= info->micd_num_modes) {
+ if (info->jack_flips >= info->micd_num_modes * 10) {
dev_dbg(arizona->dev, "Detected HP/line\n");
arizona_identify_headphone(info);
lvl = val & ARIZONA_MICD_LVL_MASK;
lvl >>= ARIZONA_MICD_LVL_SHIFT;
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
- if (lvl & arizona_lvl_to_key[i].status)
- input_report_key(info->input,
- arizona_lvl_to_key[i].report,
- 1);
- input_sync(info->input);
+ for (i = 0; i < info->num_micd_ranges; i++)
+ input_report_key(info->input,
+ info->micd_ranges[i].key, 0);
+
+ WARN_ON(!lvl);
+ WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges);
+ if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) {
+ key = info->micd_ranges[ffs(lvl) - 1].key;
+ input_report_key(info->input, key, 1);
+ input_sync(info->input);
+ }
} else if (info->detecting) {
dev_dbg(arizona->dev, "Headphone detected\n");
}
} else {
dev_dbg(arizona->dev, "Mic button released\n");
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
+ for (i = 0; i < info->num_micd_ranges; i++)
input_report_key(info->input,
- arizona_lvl_to_key[i].report, 0);
+ info->micd_ranges[i].key, 0);
input_sync(info->input);
arizona_extcon_pulse_micbias(info);
}
handled:
+ if (info->detecting)
+ schedule_delayed_work(&info->micd_timeout_work,
+ msecs_to_jiffies(info->micd_timeout));
+
pm_runtime_mark_last_busy(info->dev);
mutex_unlock(&info->lock);
+}
+
+static irqreturn_t arizona_micdet(int irq, void *data)
+{
+ struct arizona_extcon_info *info = data;
+ struct arizona *arizona = info->arizona;
+ int debounce = arizona->pdata.micd_detect_debounce;
+
+ cancel_delayed_work_sync(&info->micd_detect_work);
+ cancel_delayed_work_sync(&info->micd_timeout_work);
+
+ mutex_lock(&info->lock);
+ if (!info->detecting)
+ debounce = 0;
+ mutex_unlock(&info->lock);
+
+ if (debounce)
+ schedule_delayed_work(&info->micd_detect_work,
+ msecs_to_jiffies(debounce));
+ else
+ arizona_micd_detect(&info->micd_detect_work.work);
return IRQ_HANDLED;
}
struct arizona_extcon_info *info = data;
struct arizona *arizona = info->arizona;
unsigned int val, present, mask;
+ bool cancelled_hp, cancelled_mic;
int ret, i;
- pm_runtime_get_sync(info->dev);
+ cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work);
+ cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work);
- cancel_delayed_work_sync(&info->hpdet_work);
+ pm_runtime_get_sync(info->dev);
mutex_lock(&info->lock);
return IRQ_NONE;
}
- if ((val & mask) == present) {
+ val &= mask;
+ if (val == info->last_jackdet) {
+ dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
+ if (cancelled_hp)
+ schedule_delayed_work(&info->hpdet_work,
+ msecs_to_jiffies(HPDET_DEBOUNCE));
+
+ if (cancelled_mic)
+ schedule_delayed_work(&info->micd_timeout_work,
+ msecs_to_jiffies(info->micd_timeout));
+
+ goto out;
+ }
+ info->last_jackdet = val;
+
+ if (info->last_jackdet == present) {
dev_dbg(arizona->dev, "Detected jack\n");
ret = extcon_set_cable_state_(&info->edev,
ARIZONA_CABLE_MECHANICAL, true);
arizona_start_mic(info);
} else {
schedule_delayed_work(&info->hpdet_work,
- msecs_to_jiffies(250));
+ msecs_to_jiffies(HPDET_DEBOUNCE));
}
regmap_update_bits(arizona->regmap,
info->hpdet_res[i] = 0;
info->mic = false;
info->hpdet_done = false;
+ info->hpdet_retried = false;
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
+ for (i = 0; i < info->num_micd_ranges; i++)
input_report_key(info->input,
- arizona_lvl_to_key[i].report, 0);
+ info->micd_ranges[i].key, 0);
input_sync(info->input);
ret = extcon_update_state(&info->edev, 0xffffffff, 0);
ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB);
}
+ if (arizona->pdata.micd_timeout)
+ info->micd_timeout = arizona->pdata.micd_timeout;
+ else
+ info->micd_timeout = DEFAULT_MICD_TIMEOUT;
+
/* Clear trig_sts to make sure DCVDD is not forced up */
regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG,
ARIZONA_MICD_CLAMP_FALL_TRIG_STS |
ARIZONA_JD1_FALL_TRIG_STS |
ARIZONA_JD1_RISE_TRIG_STS);
+out:
mutex_unlock(&info->lock);
pm_runtime_mark_last_busy(info->dev);
return IRQ_HANDLED;
}
+/* Map a level onto a slot in the register bank */
+static void arizona_micd_set_level(struct arizona *arizona, int index,
+ unsigned int level)
+{
+ int reg;
+ unsigned int mask;
+
+ reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2);
+
+ if (!(index % 2)) {
+ mask = 0x3f00;
+ level <<= 8;
+ } else {
+ mask = 0x3f;
+ }
+
+ /* Program the level itself */
+ regmap_update_bits(arizona->regmap, reg, mask, level);
+}
+
static int arizona_extcon_probe(struct platform_device *pdev)
{
struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
struct arizona_pdata *pdata;
struct arizona_extcon_info *info;
+ unsigned int val;
int jack_irq_fall, jack_irq_rise;
- int ret, mode, i;
+ int ret, mode, i, j;
if (!arizona->dapm || !arizona->dapm->card)
return -EPROBE_DEFER;
mutex_init(&info->lock);
info->arizona = arizona;
info->dev = &pdev->dev;
+ info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS);
INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work);
+ INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect);
+ INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work);
platform_set_drvdata(pdev, info);
switch (arizona->type) {
goto err;
}
+ info->input = devm_input_allocate_device(&pdev->dev);
+ if (!info->input) {
+ dev_err(arizona->dev, "Can't allocate input dev\n");
+ ret = -ENOMEM;
+ goto err_register;
+ }
+
+ info->input->name = "Headset";
+ info->input->phys = "arizona/extcon";
+ info->input->dev.parent = &pdev->dev;
+
if (pdata->num_micd_configs) {
info->micd_modes = pdata->micd_configs;
info->micd_num_modes = pdata->num_micd_configs;
arizona->pdata.micd_dbtime
<< ARIZONA_MICD_DBTIME_SHIFT);
+ BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) != 0x40);
+
+ if (arizona->pdata.num_micd_ranges) {
+ info->micd_ranges = pdata->micd_ranges;
+ info->num_micd_ranges = pdata->num_micd_ranges;
+ } else {
+ info->micd_ranges = micd_default_ranges;
+ info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges);
+ }
+
+ if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) {
+ dev_err(arizona->dev, "Too many MICD ranges: %d\n",
+ arizona->pdata.num_micd_ranges);
+ }
+
+ if (info->num_micd_ranges > 1) {
+ for (i = 1; i < info->num_micd_ranges; i++) {
+ if (info->micd_ranges[i - 1].max >
+ info->micd_ranges[i].max) {
+ dev_err(arizona->dev,
+ "MICD ranges must be sorted\n");
+ ret = -EINVAL;
+ goto err_input;
+ }
+ }
+ }
+
+ /* Disable all buttons by default */
+ regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
+ ARIZONA_MICD_LVL_SEL_MASK, 0x81);
+
+ /* Set up all the buttons the user specified */
+ for (i = 0; i < info->num_micd_ranges; i++) {
+ for (j = 0; j < ARRAY_SIZE(arizona_micd_levels); j++)
+ if (arizona_micd_levels[j] >= info->micd_ranges[i].max)
+ break;
+
+ if (j == ARRAY_SIZE(arizona_micd_levels)) {
+ dev_err(arizona->dev, "Unsupported MICD level %d\n",
+ info->micd_ranges[i].max);
+ ret = -EINVAL;
+ goto err_input;
+ }
+
+ dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n",
+ arizona_micd_levels[j], i);
+
+ arizona_micd_set_level(arizona, i, j);
+ input_set_capability(info->input, EV_KEY,
+ info->micd_ranges[i].key);
+
+ /* Enable reporting of that range */
+ regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2,
+ 1 << i, 1 << i);
+ }
+
+ /* Set all the remaining keys to a maximum */
+ for (; i < ARIZONA_MAX_MICD_RANGE; i++)
+ arizona_micd_set_level(arizona, i, 0x3f);
+
/*
* If we have a clamp use it, activating in conjunction with
* GPIO5 if that is connected for jack detect operation.
*/
if (info->micd_clamp) {
if (arizona->pdata.jd_gpio5) {
- /* Put the GPIO into input mode */
+ /* Put the GPIO into input mode with optional pull */
+ val = 0xc101;
+ if (arizona->pdata.jd_gpio5_nopull)
+ val &= ~ARIZONA_GPN_PU;
+
regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL,
- 0xc101);
+ val);
regmap_update_bits(arizona->regmap,
ARIZONA_MICD_CLAMP_CONTROL,
arizona_extcon_set_mode(info, 0);
- info->input = devm_input_allocate_device(&pdev->dev);
- if (!info->input) {
- dev_err(arizona->dev, "Can't allocate input dev\n");
- ret = -ENOMEM;
- goto err_register;
- }
-
- for (i = 0; i < ARIZONA_NUM_BUTTONS; i++)
- input_set_capability(info->input, EV_KEY,
- arizona_lvl_to_key[i].report);
- info->input->name = "Headset";
- info->input->phys = "arizona/extcon";
- info->input->dev.parent = &pdev->dev;
-
pm_runtime_enable(&pdev->dev);
pm_runtime_idle(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
hv_vmbus-y := vmbus_drv.o \
hv.o connection.o channel.o \
channel_mgmt.o ring_buffer.o
-hv_utils-y := hv_util.o hv_kvp.o
+hv_utils-y := hv_util.o hv_kvp.o hv_snapshot.o
struct vmbus_channel *channel = container_of(work,
struct vmbus_channel,
work);
+ unsigned long flags;
+ struct vmbus_channel_relid_released msg;
vmbus_device_unregister(channel->device_obj);
+ memset(&msg, 0, sizeof(struct vmbus_channel_relid_released));
+ msg.child_relid = channel->offermsg.child_relid;
+ msg.header.msgtype = CHANNELMSG_RELID_RELEASED;
+ vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released));
+
+ spin_lock_irqsave(&vmbus_connection.channel_lock, flags);
+ list_del(&channel->listentry);
+ spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags);
+ free_channel(channel);
}
void vmbus_free_channels(void)
/* Check the version */
rdmsrl(HV_X64_MSR_SVERSION, version);
- hv_context.event_dpc[cpu] = (struct tasklet_struct *)
- kmalloc(sizeof(struct tasklet_struct),
- GFP_ATOMIC);
+ hv_context.event_dpc[cpu] = kmalloc(sizeof(struct tasklet_struct),
+ GFP_ATOMIC);
if (hv_context.event_dpc[cpu] == NULL) {
pr_err("Unable to allocate event dpc\n");
goto cleanup;
struct {
__u64 balloon:1;
__u64 hot_add:1;
- __u64 reservedz:62;
+ /*
+ * To support guests that may have alignment
+ * limitations on hot-add, the guest can specify
+ * its alignment requirements; a value of n
+ * represents an alignment of 2^n in mega bytes.
+ */
+ __u64 hot_add_alignment:4;
+ __u64 reservedz:58;
} cap_bits;
__u64 caps;
} __packed;
* End protocol definitions.
*/
-static bool hot_add;
+/*
+ * State to manage hot adding memory into the guest.
+ * The range start_pfn : end_pfn specifies the range
+ * that the host has asked us to hot add. The range
+ * start_pfn : ha_end_pfn specifies the range that we have
+ * currently hot added. We hot add in multiples of 128M
+ * chunks; it is possible that we may not be able to bring
+ * online all the pages in the region. The range
+ * covered_start_pfn : covered_end_pfn defines the pages that can
+ * be brough online.
+ */
+
+struct hv_hotadd_state {
+ struct list_head list;
+ unsigned long start_pfn;
+ unsigned long covered_start_pfn;
+ unsigned long covered_end_pfn;
+ unsigned long ha_end_pfn;
+ unsigned long end_pfn;
+};
+
+struct balloon_state {
+ __u32 num_pages;
+ struct work_struct wrk;
+};
+
+struct hot_add_wrk {
+ union dm_mem_page_range ha_page_range;
+ union dm_mem_page_range ha_region_range;
+ struct work_struct wrk;
+};
+
+static bool hot_add = true;
static bool do_hot_add;
/*
* Delay reporting memory pressure by
* the specified number of seconds.
*/
-static uint pressure_report_delay = 30;
+static uint pressure_report_delay = 45;
module_param(hot_add, bool, (S_IRUGO | S_IWUSR));
MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add");
static __u8 recv_buffer[PAGE_SIZE];
static __u8 *send_buffer;
#define PAGES_IN_2M 512
+#define HA_CHUNK (32 * 1024)
struct hv_dynmem_device {
struct hv_device *dev;
unsigned int num_pages_ballooned;
/*
- * This thread handles both balloon/hot-add
+ * State to manage the ballooning (up) operation.
+ */
+ struct balloon_state balloon_wrk;
+
+ /*
+ * State to execute the "hot-add" operation.
+ */
+ struct hot_add_wrk ha_wrk;
+
+ /*
+ * This state tracks if the host has specified a hot-add
+ * region.
+ */
+ bool host_specified_ha_region;
+
+ /*
+ * State to synchronize hot-add.
+ */
+ struct completion ol_waitevent;
+ bool ha_waiting;
+ /*
+ * This thread handles hot-add
* requests from the host as well as notifying
* the host with regards to memory pressure in
* the guest.
*/
struct task_struct *thread;
+ /*
+ * A list of hot-add regions.
+ */
+ struct list_head ha_region_list;
+
/*
* We start with the highest version we can support
* and downgrade based on the host; we save here the
static struct hv_dynmem_device dm_device;
-static void hot_add_req(struct hv_dynmem_device *dm, struct dm_hot_add *msg)
+#ifdef CONFIG_MEMORY_HOTPLUG
+
+static void hv_bring_pgs_online(unsigned long start_pfn, unsigned long size)
{
+ int i;
- struct dm_hot_add_response resp;
+ for (i = 0; i < size; i++) {
+ struct page *pg;
+ pg = pfn_to_page(start_pfn + i);
+ __online_page_set_limits(pg);
+ __online_page_increment_counters(pg);
+ __online_page_free(pg);
+ }
+}
- if (do_hot_add) {
+static void hv_mem_hot_add(unsigned long start, unsigned long size,
+ unsigned long pfn_count,
+ struct hv_hotadd_state *has)
+{
+ int ret = 0;
+ int i, nid, t;
+ unsigned long start_pfn;
+ unsigned long processed_pfn;
+ unsigned long total_pfn = pfn_count;
+
+ for (i = 0; i < (size/HA_CHUNK); i++) {
+ start_pfn = start + (i * HA_CHUNK);
+ has->ha_end_pfn += HA_CHUNK;
+
+ if (total_pfn > HA_CHUNK) {
+ processed_pfn = HA_CHUNK;
+ total_pfn -= HA_CHUNK;
+ } else {
+ processed_pfn = total_pfn;
+ total_pfn = 0;
+ }
+
+ has->covered_end_pfn += processed_pfn;
+
+ init_completion(&dm_device.ol_waitevent);
+ dm_device.ha_waiting = true;
+
+ nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn));
+ ret = add_memory(nid, PFN_PHYS((start_pfn)),
+ (HA_CHUNK << PAGE_SHIFT));
- pr_info("Memory hot add not supported\n");
+ if (ret) {
+ pr_info("hot_add memory failed error is %d\n", ret);
+ if (ret == -EEXIST) {
+ /*
+ * This error indicates that the error
+ * is not a transient failure. This is the
+ * case where the guest's physical address map
+ * precludes hot adding memory. Stop all further
+ * memory hot-add.
+ */
+ do_hot_add = false;
+ }
+ has->ha_end_pfn -= HA_CHUNK;
+ has->covered_end_pfn -= processed_pfn;
+ break;
+ }
/*
- * Currently we do not support hot add.
- * Just fail the request.
+ * Wait for the memory block to be onlined.
*/
+ t = wait_for_completion_timeout(&dm_device.ol_waitevent, 5*HZ);
+ if (t == 0) {
+ pr_info("hot_add memory timedout\n");
+ has->ha_end_pfn -= HA_CHUNK;
+ has->covered_end_pfn -= processed_pfn;
+ break;
+ }
+
+ }
+
+ return;
+}
+
+static void hv_online_page(struct page *pg)
+{
+ struct list_head *cur;
+ struct hv_hotadd_state *has;
+ unsigned long cur_start_pgp;
+ unsigned long cur_end_pgp;
+
+ if (dm_device.ha_waiting) {
+ dm_device.ha_waiting = false;
+ complete(&dm_device.ol_waitevent);
+ }
+
+ list_for_each(cur, &dm_device.ha_region_list) {
+ has = list_entry(cur, struct hv_hotadd_state, list);
+ cur_start_pgp = (unsigned long)
+ pfn_to_page(has->covered_start_pfn);
+ cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn);
+
+ if (((unsigned long)pg >= cur_start_pgp) &&
+ ((unsigned long)pg < cur_end_pgp)) {
+ /*
+ * This frame is currently backed; online the
+ * page.
+ */
+ __online_page_set_limits(pg);
+ __online_page_increment_counters(pg);
+ __online_page_free(pg);
+ has->covered_start_pfn++;
+ }
+ }
+}
+
+static bool pfn_covered(unsigned long start_pfn, unsigned long pfn_cnt)
+{
+ struct list_head *cur;
+ struct hv_hotadd_state *has;
+ unsigned long residual, new_inc;
+
+ if (list_empty(&dm_device.ha_region_list))
+ return false;
+
+ list_for_each(cur, &dm_device.ha_region_list) {
+ has = list_entry(cur, struct hv_hotadd_state, list);
+
+ /*
+ * If the pfn range we are dealing with is not in the current
+ * "hot add block", move on.
+ */
+ if ((start_pfn >= has->end_pfn))
+ continue;
+ /*
+ * If the current hot add-request extends beyond
+ * our current limit; extend it.
+ */
+ if ((start_pfn + pfn_cnt) > has->end_pfn) {
+ residual = (start_pfn + pfn_cnt - has->end_pfn);
+ /*
+ * Extend the region by multiples of HA_CHUNK.
+ */
+ new_inc = (residual / HA_CHUNK) * HA_CHUNK;
+ if (residual % HA_CHUNK)
+ new_inc += HA_CHUNK;
+
+ has->end_pfn += new_inc;
+ }
+
+ /*
+ * If the current start pfn is not where the covered_end
+ * is, update it.
+ */
+
+ if (has->covered_end_pfn != start_pfn) {
+ has->covered_end_pfn = start_pfn;
+ has->covered_start_pfn = start_pfn;
+ }
+ return true;
+
}
+ return false;
+}
+
+static unsigned long handle_pg_range(unsigned long pg_start,
+ unsigned long pg_count)
+{
+ unsigned long start_pfn = pg_start;
+ unsigned long pfn_cnt = pg_count;
+ unsigned long size;
+ struct list_head *cur;
+ struct hv_hotadd_state *has;
+ unsigned long pgs_ol = 0;
+ unsigned long old_covered_state;
+
+ if (list_empty(&dm_device.ha_region_list))
+ return 0;
+
+ list_for_each(cur, &dm_device.ha_region_list) {
+ has = list_entry(cur, struct hv_hotadd_state, list);
+
+ /*
+ * If the pfn range we are dealing with is not in the current
+ * "hot add block", move on.
+ */
+ if ((start_pfn >= has->end_pfn))
+ continue;
+
+ old_covered_state = has->covered_end_pfn;
+
+ if (start_pfn < has->ha_end_pfn) {
+ /*
+ * This is the case where we are backing pages
+ * in an already hot added region. Bring
+ * these pages online first.
+ */
+ pgs_ol = has->ha_end_pfn - start_pfn;
+ if (pgs_ol > pfn_cnt)
+ pgs_ol = pfn_cnt;
+ hv_bring_pgs_online(start_pfn, pgs_ol);
+ has->covered_end_pfn += pgs_ol;
+ has->covered_start_pfn += pgs_ol;
+ pfn_cnt -= pgs_ol;
+ }
+
+ if ((has->ha_end_pfn < has->end_pfn) && (pfn_cnt > 0)) {
+ /*
+ * We have some residual hot add range
+ * that needs to be hot added; hot add
+ * it now. Hot add a multiple of
+ * of HA_CHUNK that fully covers the pages
+ * we have.
+ */
+ size = (has->end_pfn - has->ha_end_pfn);
+ if (pfn_cnt <= size) {
+ size = ((pfn_cnt / HA_CHUNK) * HA_CHUNK);
+ if (pfn_cnt % HA_CHUNK)
+ size += HA_CHUNK;
+ } else {
+ pfn_cnt = size;
+ }
+ hv_mem_hot_add(has->ha_end_pfn, size, pfn_cnt, has);
+ }
+ /*
+ * If we managed to online any pages that were given to us,
+ * we declare success.
+ */
+ return has->covered_end_pfn - old_covered_state;
+
+ }
+
+ return 0;
+}
+
+static unsigned long process_hot_add(unsigned long pg_start,
+ unsigned long pfn_cnt,
+ unsigned long rg_start,
+ unsigned long rg_size)
+{
+ struct hv_hotadd_state *ha_region = NULL;
+
+ if (pfn_cnt == 0)
+ return 0;
+
+ if (!dm_device.host_specified_ha_region)
+ if (pfn_covered(pg_start, pfn_cnt))
+ goto do_pg_range;
+
+ /*
+ * If the host has specified a hot-add range; deal with it first.
+ */
+
+ if (rg_size != 0) {
+ ha_region = kzalloc(sizeof(struct hv_hotadd_state), GFP_KERNEL);
+ if (!ha_region)
+ return 0;
+
+ INIT_LIST_HEAD(&ha_region->list);
+
+ list_add_tail(&ha_region->list, &dm_device.ha_region_list);
+ ha_region->start_pfn = rg_start;
+ ha_region->ha_end_pfn = rg_start;
+ ha_region->covered_start_pfn = pg_start;
+ ha_region->covered_end_pfn = pg_start;
+ ha_region->end_pfn = rg_start + rg_size;
+ }
+
+do_pg_range:
+ /*
+ * Process the page range specified; bringing them
+ * online if possible.
+ */
+ return handle_pg_range(pg_start, pfn_cnt);
+}
+
+#endif
+
+static void hot_add_req(struct work_struct *dummy)
+{
+ struct dm_hot_add_response resp;
+#ifdef CONFIG_MEMORY_HOTPLUG
+ unsigned long pg_start, pfn_cnt;
+ unsigned long rg_start, rg_sz;
+#endif
+ struct hv_dynmem_device *dm = &dm_device;
+
memset(&resp, 0, sizeof(struct dm_hot_add_response));
resp.hdr.type = DM_MEM_HOT_ADD_RESPONSE;
resp.hdr.size = sizeof(struct dm_hot_add_response);
resp.hdr.trans_id = atomic_inc_return(&trans_id);
- resp.page_count = 0;
- resp.result = 0;
+#ifdef CONFIG_MEMORY_HOTPLUG
+ pg_start = dm->ha_wrk.ha_page_range.finfo.start_page;
+ pfn_cnt = dm->ha_wrk.ha_page_range.finfo.page_cnt;
+
+ rg_start = dm->ha_wrk.ha_region_range.finfo.start_page;
+ rg_sz = dm->ha_wrk.ha_region_range.finfo.page_cnt;
+
+ if ((rg_start == 0) && (!dm->host_specified_ha_region)) {
+ unsigned long region_size;
+ unsigned long region_start;
+
+ /*
+ * The host has not specified the hot-add region.
+ * Based on the hot-add page range being specified,
+ * compute a hot-add region that can cover the pages
+ * that need to be hot-added while ensuring the alignment
+ * and size requirements of Linux as it relates to hot-add.
+ */
+ region_start = pg_start;
+ region_size = (pfn_cnt / HA_CHUNK) * HA_CHUNK;
+ if (pfn_cnt % HA_CHUNK)
+ region_size += HA_CHUNK;
+
+ region_start = (pg_start / HA_CHUNK) * HA_CHUNK;
+
+ rg_start = region_start;
+ rg_sz = region_size;
+ }
+
+ if (do_hot_add)
+ resp.page_count = process_hot_add(pg_start, pfn_cnt,
+ rg_start, rg_sz);
+#endif
+ /*
+ * The result field of the response structure has the
+ * following semantics:
+ *
+ * 1. If all or some pages hot-added: Guest should return success.
+ *
+ * 2. If no pages could be hot-added:
+ *
+ * If the guest returns success, then the host
+ * will not attempt any further hot-add operations. This
+ * signifies a permanent failure.
+ *
+ * If the guest returns failure, then this failure will be
+ * treated as a transient failure and the host may retry the
+ * hot-add operation after some delay.
+ */
+ if (resp.page_count > 0)
+ resp.result = 1;
+ else if (!do_hot_add)
+ resp.result = 1;
+ else
+ resp.result = 0;
+
+ if (!do_hot_add || (resp.page_count == 0))
+ pr_info("Memory hot add failed\n");
dm->state = DM_INITIALIZED;
vmbus_sendpacket(dm->dev->channel, &resp,
sizeof(struct dm_hot_add_response),
(unsigned long)NULL,
VM_PKT_DATA_INBAND, 0);
-
}
static void process_info(struct hv_dynmem_device *dm, struct dm_info_msg *msg)
}
}
-unsigned long compute_balloon_floor(void)
+static unsigned long compute_balloon_floor(void)
{
unsigned long min_pages;
#define MB2PAGES(mb) ((mb) << (20 - PAGE_SHIFT))
dm->num_pages_ballooned += alloc_unit;
+ /*
+ * If we allocatted 2M pages; split them so we
+ * can free them in any order we get.
+ */
+
+ if (alloc_unit != 1)
+ split_page(pg, get_order(alloc_unit << PAGE_SHIFT));
+
bl_resp->range_count++;
bl_resp->range_array[i].finfo.start_page =
page_to_pfn(pg);
-static void balloon_up(struct hv_dynmem_device *dm, struct dm_balloon *req)
+static void balloon_up(struct work_struct *dummy)
{
- int num_pages = req->num_pages;
+ int num_pages = dm_device.balloon_wrk.num_pages;
int num_ballooned = 0;
struct dm_balloon_response *bl_resp;
int alloc_unit;
/*
- * Currently, we only support 4k allocations.
+ * We will attempt 2M allocations. However, if we fail to
+ * allocate 2M chunks, we will go back to 4k allocations.
*/
- alloc_unit = 1;
+ alloc_unit = 512;
while (!done) {
bl_resp = (struct dm_balloon_response *)send_buffer;
num_pages -= num_ballooned;
- num_ballooned = alloc_balloon_pages(dm, num_pages,
+ num_ballooned = alloc_balloon_pages(&dm_device, num_pages,
bl_resp, alloc_unit,
&alloc_error);
+ if ((alloc_error) && (alloc_unit != 1)) {
+ alloc_unit = 1;
+ continue;
+ }
+
if ((alloc_error) || (num_ballooned == num_pages)) {
bl_resp->more_pages = 0;
done = true;
- dm->state = DM_INITIALIZED;
+ dm_device.state = DM_INITIALIZED;
}
/*
pr_info("Balloon response failed\n");
for (i = 0; i < bl_resp->range_count; i++)
- free_balloon_pages(dm,
+ free_balloon_pages(&dm_device,
&bl_resp->range_array[i]);
done = true;
{
struct hv_dynmem_device *dm = dm_dev;
int t;
- unsigned long scan_start;
while (!kthread_should_stop()) {
t = wait_for_completion_timeout(&dm_device.config_event, 1*HZ);
if (t == 0)
post_status(dm);
- scan_start = jiffies;
- switch (dm->state) {
- case DM_BALLOON_UP:
- balloon_up(dm, (struct dm_balloon *)recv_buffer);
- break;
-
- case DM_HOT_ADD:
- hot_add_req(dm, (struct dm_hot_add *)recv_buffer);
- break;
- default:
- break;
- }
-
- if (!time_in_range(jiffies, scan_start, scan_start + HZ))
- post_status(dm);
-
}
return 0;
struct dm_message *dm_msg;
struct dm_header *dm_hdr;
struct hv_dynmem_device *dm = hv_get_drvdata(dev);
+ struct dm_balloon *bal_msg;
+ struct dm_hot_add *ha_msg;
+ union dm_mem_page_range *ha_pg_range;
+ union dm_mem_page_range *ha_region;
memset(recv_buffer, 0, sizeof(recv_buffer));
vmbus_recvpacket(dev->channel, recv_buffer,
break;
case DM_BALLOON_REQUEST:
+ if (dm->state == DM_BALLOON_UP)
+ pr_warn("Currently ballooning\n");
+ bal_msg = (struct dm_balloon *)recv_buffer;
dm->state = DM_BALLOON_UP;
- complete(&dm->config_event);
+ dm_device.balloon_wrk.num_pages = bal_msg->num_pages;
+ schedule_work(&dm_device.balloon_wrk.wrk);
break;
case DM_UNBALLOON_REQUEST:
break;
case DM_MEM_HOT_ADD_REQUEST:
+ if (dm->state == DM_HOT_ADD)
+ pr_warn("Currently hot-adding\n");
dm->state = DM_HOT_ADD;
- complete(&dm->config_event);
+ ha_msg = (struct dm_hot_add *)recv_buffer;
+ if (ha_msg->hdr.size == sizeof(struct dm_hot_add)) {
+ /*
+ * This is a normal hot-add request specifying
+ * hot-add memory.
+ */
+ ha_pg_range = &ha_msg->range;
+ dm->ha_wrk.ha_page_range = *ha_pg_range;
+ dm->ha_wrk.ha_region_range.page_range = 0;
+ } else {
+ /*
+ * Host is specifying that we first hot-add
+ * a region and then partially populate this
+ * region.
+ */
+ dm->host_specified_ha_region = true;
+ ha_pg_range = &ha_msg->range;
+ ha_region = &ha_pg_range[1];
+ dm->ha_wrk.ha_page_range = *ha_pg_range;
+ dm->ha_wrk.ha_region_range = *ha_region;
+ }
+ schedule_work(&dm_device.ha_wrk.wrk);
break;
case DM_INFO_MESSAGE:
dm_device.next_version = DYNMEM_PROTOCOL_VERSION_WIN7;
init_completion(&dm_device.host_event);
init_completion(&dm_device.config_event);
+ INIT_LIST_HEAD(&dm_device.ha_region_list);
+ INIT_WORK(&dm_device.balloon_wrk.wrk, balloon_up);
+ INIT_WORK(&dm_device.ha_wrk.wrk, hot_add_req);
+ dm_device.host_specified_ha_region = false;
dm_device.thread =
kthread_run(dm_thread_func, &dm_device, "hv_balloon");
goto probe_error1;
}
+#ifdef CONFIG_MEMORY_HOTPLUG
+ set_online_page_callback(&hv_online_page);
+#endif
+
hv_set_drvdata(dev, &dm_device);
/*
* Initiate the hand shake with the host and negotiate
ret = vmbus_sendpacket(dev->channel, &version_req,
sizeof(struct dm_version_request),
(unsigned long)NULL,
- VM_PKT_DATA_INBAND,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ VM_PKT_DATA_INBAND, 0);
if (ret)
goto probe_error2;
cap_msg.hdr.trans_id = atomic_inc_return(&trans_id);
cap_msg.caps.cap_bits.balloon = 1;
+ cap_msg.caps.cap_bits.hot_add = 1;
+
/*
- * While we currently don't support hot-add,
- * we still advertise this capability since the
- * host requires that guests partcipating in the
- * dynamic memory protocol support hot add.
+ * Specify our alignment requirements as it relates
+ * memory hot-add. Specify 128MB alignment.
*/
- cap_msg.caps.cap_bits.hot_add = 1;
+ cap_msg.caps.cap_bits.hot_add_alignment = 7;
/*
* Currently the host does not use these
ret = vmbus_sendpacket(dev->channel, &cap_msg,
sizeof(struct dm_capabilities),
(unsigned long)NULL,
- VM_PKT_DATA_INBAND,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ VM_PKT_DATA_INBAND, 0);
if (ret)
goto probe_error2;
return 0;
probe_error2:
+#ifdef CONFIG_MEMORY_HOTPLUG
+ restore_online_page_callback(&hv_online_page);
+#endif
kthread_stop(dm_device.thread);
probe_error1:
static int balloon_remove(struct hv_device *dev)
{
struct hv_dynmem_device *dm = hv_get_drvdata(dev);
+ struct list_head *cur, *tmp;
+ struct hv_hotadd_state *has;
if (dm->num_pages_ballooned != 0)
pr_warn("Ballooned pages: %d\n", dm->num_pages_ballooned);
+ cancel_work_sync(&dm->balloon_wrk.wrk);
+ cancel_work_sync(&dm->ha_wrk.wrk);
+
vmbus_close(dev->channel);
kthread_stop(dm->thread);
kfree(send_buffer);
+#ifdef CONFIG_MEMORY_HOTPLUG
+ restore_online_page_callback(&hv_online_page);
+#endif
+ list_for_each_safe(cur, tmp, &dm->ha_region_list) {
+ has = list_entry(cur, struct hv_hotadd_state, list);
+ list_del(&has->list);
+ kfree(has);
+ }
return 0;
}
return vmbus_driver_register(&balloon_drv);
}
-static void exit_balloon_drv(void)
-{
-
- vmbus_driver_unregister(&balloon_drv);
-}
-
module_init(init_balloon_drv);
-module_exit(exit_balloon_drv);
MODULE_DESCRIPTION("Hyper-V Balloon");
MODULE_VERSION(HV_DRV_VERSION);
--- /dev/null
+/*
+ * An implementation of host initiated guest snapshot.
+ *
+ *
+ * Copyright (C) 2013, Microsoft, Inc.
+ * Author : K. Y. Srinivasan <kys@microsoft.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/net.h>
+#include <linux/nls.h>
+#include <linux/connector.h>
+#include <linux/workqueue.h>
+#include <linux/hyperv.h>
+
+
+
+/*
+ * Global state maintained for transaction that is being processed.
+ * Note that only one transaction can be active at any point in time.
+ *
+ * This state is set when we receive a request from the host; we
+ * cleanup this state when the transaction is completed - when we respond
+ * to the host with the key value.
+ */
+
+static struct {
+ bool active; /* transaction status - active or not */
+ int recv_len; /* number of bytes received. */
+ struct vmbus_channel *recv_channel; /* chn we got the request */
+ u64 recv_req_id; /* request ID. */
+ struct hv_vss_msg *msg; /* current message */
+} vss_transaction;
+
+
+static void vss_respond_to_host(int error);
+
+static struct cb_id vss_id = { CN_VSS_IDX, CN_VSS_VAL };
+static const char vss_name[] = "vss_kernel_module";
+static __u8 *recv_buffer;
+
+static void vss_send_op(struct work_struct *dummy);
+static DECLARE_WORK(vss_send_op_work, vss_send_op);
+
+/*
+ * Callback when data is received from user mode.
+ */
+
+static void
+vss_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
+{
+ struct hv_vss_msg *vss_msg;
+
+ vss_msg = (struct hv_vss_msg *)msg->data;
+
+ if (vss_msg->vss_hdr.operation == VSS_OP_REGISTER) {
+ pr_info("VSS daemon registered\n");
+ vss_transaction.active = false;
+ if (vss_transaction.recv_channel != NULL)
+ hv_vss_onchannelcallback(vss_transaction.recv_channel);
+ return;
+
+ }
+ vss_respond_to_host(vss_msg->error);
+}
+
+
+static void vss_send_op(struct work_struct *dummy)
+{
+ int op = vss_transaction.msg->vss_hdr.operation;
+ struct cn_msg *msg;
+ struct hv_vss_msg *vss_msg;
+
+ msg = kzalloc(sizeof(*msg) + sizeof(*vss_msg), GFP_ATOMIC);
+ if (!msg)
+ return;
+
+ vss_msg = (struct hv_vss_msg *)msg->data;
+
+ msg->id.idx = CN_VSS_IDX;
+ msg->id.val = CN_VSS_VAL;
+
+ vss_msg->vss_hdr.operation = op;
+ msg->len = sizeof(struct hv_vss_msg);
+
+ cn_netlink_send(msg, 0, GFP_ATOMIC);
+ kfree(msg);
+
+ return;
+}
+
+/*
+ * Send a response back to the host.
+ */
+
+static void
+vss_respond_to_host(int error)
+{
+ struct icmsg_hdr *icmsghdrp;
+ u32 buf_len;
+ struct vmbus_channel *channel;
+ u64 req_id;
+
+ /*
+ * If a transaction is not active; log and return.
+ */
+
+ if (!vss_transaction.active) {
+ /*
+ * This is a spurious call!
+ */
+ pr_warn("VSS: Transaction not active\n");
+ return;
+ }
+ /*
+ * Copy the global state for completing the transaction. Note that
+ * only one transaction can be active at a time.
+ */
+
+ buf_len = vss_transaction.recv_len;
+ channel = vss_transaction.recv_channel;
+ req_id = vss_transaction.recv_req_id;
+ vss_transaction.active = false;
+
+ icmsghdrp = (struct icmsg_hdr *)
+ &recv_buffer[sizeof(struct vmbuspipe_hdr)];
+
+ if (channel->onchannel_callback == NULL)
+ /*
+ * We have raced with util driver being unloaded;
+ * silently return.
+ */
+ return;
+
+ icmsghdrp->status = error;
+
+ icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION | ICMSGHDRFLAG_RESPONSE;
+
+ vmbus_sendpacket(channel, recv_buffer, buf_len, req_id,
+ VM_PKT_DATA_INBAND, 0);
+
+}
+
+/*
+ * This callback is invoked when we get a VSS message from the host.
+ * The host ensures that only one VSS transaction can be active at a time.
+ */
+
+void hv_vss_onchannelcallback(void *context)
+{
+ struct vmbus_channel *channel = context;
+ u32 recvlen;
+ u64 requestid;
+ struct hv_vss_msg *vss_msg;
+
+
+ struct icmsg_hdr *icmsghdrp;
+ struct icmsg_negotiate *negop = NULL;
+
+ if (vss_transaction.active) {
+ /*
+ * We will defer processing this callback once
+ * the current transaction is complete.
+ */
+ vss_transaction.recv_channel = channel;
+ return;
+ }
+
+ vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 2, &recvlen,
+ &requestid);
+
+ if (recvlen > 0) {
+ icmsghdrp = (struct icmsg_hdr *)&recv_buffer[
+ sizeof(struct vmbuspipe_hdr)];
+
+ if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
+ vmbus_prep_negotiate_resp(icmsghdrp, negop,
+ recv_buffer, MAX_SRV_VER, MAX_SRV_VER);
+ /*
+ * We currently negotiate the highest number the
+ * host has presented. If this version is not
+ * atleast 5.0, reject.
+ */
+ negop = (struct icmsg_negotiate *)&recv_buffer[
+ sizeof(struct vmbuspipe_hdr) +
+ sizeof(struct icmsg_hdr)];
+
+ if (negop->icversion_data[1].major < 5)
+ negop->icframe_vercnt = 0;
+ } else {
+ vss_msg = (struct hv_vss_msg *)&recv_buffer[
+ sizeof(struct vmbuspipe_hdr) +
+ sizeof(struct icmsg_hdr)];
+
+ /*
+ * Stash away this global state for completing the
+ * transaction; note transactions are serialized.
+ */
+
+ vss_transaction.recv_len = recvlen;
+ vss_transaction.recv_channel = channel;
+ vss_transaction.recv_req_id = requestid;
+ vss_transaction.active = true;
+ vss_transaction.msg = (struct hv_vss_msg *)vss_msg;
+
+ switch (vss_msg->vss_hdr.operation) {
+ /*
+ * Initiate a "freeze/thaw"
+ * operation in the guest.
+ * We respond to the host once
+ * the operation is complete.
+ *
+ * We send the message to the
+ * user space daemon and the
+ * operation is performed in
+ * the daemon.
+ */
+ case VSS_OP_FREEZE:
+ case VSS_OP_THAW:
+ schedule_work(&vss_send_op_work);
+ return;
+
+ case VSS_OP_HOT_BACKUP:
+ vss_msg->vss_cf.flags =
+ VSS_HBU_NO_AUTO_RECOVERY;
+ vss_respond_to_host(0);
+ return;
+
+ case VSS_OP_GET_DM_INFO:
+ vss_msg->dm_info.flags = 0;
+ vss_respond_to_host(0);
+ return;
+
+ default:
+ vss_respond_to_host(0);
+ return;
+
+ }
+
+ }
+
+ icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
+ | ICMSGHDRFLAG_RESPONSE;
+
+ vmbus_sendpacket(channel, recv_buffer,
+ recvlen, requestid,
+ VM_PKT_DATA_INBAND, 0);
+ }
+
+}
+
+int
+hv_vss_init(struct hv_util_service *srv)
+{
+ int err;
+
+ err = cn_add_callback(&vss_id, vss_name, vss_cn_callback);
+ if (err)
+ return err;
+ recv_buffer = srv->recv_buffer;
+
+ /*
+ * When this driver loads, the user level daemon that
+ * processes the host requests may not yet be running.
+ * Defer processing channel callbacks until the daemon
+ * has registered.
+ */
+ vss_transaction.active = true;
+ return 0;
+}
+
+void hv_vss_deinit(void)
+{
+ cn_del_callback(&vss_id);
+ cancel_work_sync(&vss_send_op_work);
+}
.util_deinit = hv_kvp_deinit,
};
+static struct hv_util_service util_vss = {
+ .util_cb = hv_vss_onchannelcallback,
+ .util_init = hv_vss_init,
+ .util_deinit = hv_vss_deinit,
+};
+
static void perform_shutdown(struct work_struct *dummy)
{
orderly_poweroff(true);
{ HV_KVP_GUID,
.driver_data = (unsigned long)&util_kvp
},
+ /* VSS GUID */
+ { HV_VSS_GUID,
+ .driver_data = (unsigned long)&util_vss
+ },
{ },
};
static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi)
{
+ smp_mb();
if (rbi->ring_buffer->interrupt_mask)
return false;
static int tpci200_create_device(struct tpci200_board *tpci200, int i)
{
+ int ret;
enum ipack_space space;
struct ipack_device *dev =
kzalloc(sizeof(struct ipack_device), GFP_KERNEL);
+ tpci200_space_interval[space] * i;
dev->region[space].size = tpci200_space_size[space];
}
- return ipack_device_register(dev);
+
+ ret = ipack_device_init(dev);
+ if (ret < 0) {
+ ipack_put_device(dev);
+ return ret;
+ }
+
+ ret = ipack_device_add(dev);
+ if (ret < 0)
+ ipack_put_device(dev);
+
+ return ret;
}
static int tpci200_pci_probe(struct pci_dev *pdev,
struct ipack_bus_device *bus = data;
if (idev->bus == bus)
- ipack_device_unregister(idev);
+ ipack_device_del(idev);
return 1;
}
return ret;
}
-int ipack_device_register(struct ipack_device *dev)
+int ipack_device_init(struct ipack_device *dev)
{
int ret;
dev->dev.parent = dev->bus->parent;
dev_set_name(&dev->dev,
"ipack-dev.%u.%u", dev->bus->bus_nr, dev->slot);
+ device_initialize(&dev->dev);
if (dev->bus->ops->set_clockrate(dev, 8))
dev_warn(&dev->dev, "failed to switch to 8 MHz operation for reading of device ID.\n");
dev_err(&dev->dev, "failed to switch to 32 MHz operation.\n");
}
- ret = device_register(&dev->dev);
- if (ret < 0)
- kfree(dev->id);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ipack_device_init);
- return ret;
+int ipack_device_add(struct ipack_device *dev)
+{
+ return device_add(&dev->dev);
+}
+EXPORT_SYMBOL_GPL(ipack_device_add);
+
+void ipack_device_del(struct ipack_device *dev)
+{
+ device_del(&dev->dev);
+ ipack_put_device(dev);
+}
+EXPORT_SYMBOL_GPL(ipack_device_del);
+
+void ipack_get_device(struct ipack_device *dev)
+{
+ get_device(&dev->dev);
}
-EXPORT_SYMBOL_GPL(ipack_device_register);
+EXPORT_SYMBOL_GPL(ipack_get_device);
-void ipack_device_unregister(struct ipack_device *dev)
+void ipack_put_device(struct ipack_device *dev)
{
- device_unregister(&dev->dev);
+ put_device(&dev->dev);
}
-EXPORT_SYMBOL_GPL(ipack_device_unregister);
+EXPORT_SYMBOL_GPL(ipack_put_device);
static int __init ipack_init(void)
{
.remove = avmcs_detach,
.id_table = avmcs_ids,
};
-
-static int __init avmcs_init(void)
-{
- return pcmcia_register_driver(&avmcs_driver);
-}
-
-static void __exit avmcs_exit(void)
-{
- pcmcia_unregister_driver(&avmcs_driver);
-}
-
-module_init(avmcs_init);
-module_exit(avmcs_exit);
+module_pcmcia_driver(avmcs_driver);
.remove = avma1cs_detach,
.id_table = avma1cs_ids,
};
-
-static int __init init_avma1_cs(void)
-{
- return pcmcia_register_driver(&avma1cs_driver);
-}
-
-static void __exit exit_avma1_cs(void)
-{
- pcmcia_unregister_driver(&avma1cs_driver);
-}
-
-module_init(init_avma1_cs);
-module_exit(exit_avma1_cs);
+module_pcmcia_driver(avma1cs_driver);
.suspend = elsa_suspend,
.resume = elsa_resume,
};
-
-static int __init init_elsa_cs(void)
-{
- return pcmcia_register_driver(&elsa_cs_driver);
-}
-
-static void __exit exit_elsa_cs(void)
-{
- pcmcia_unregister_driver(&elsa_cs_driver);
-}
-
-module_init(init_elsa_cs);
-module_exit(exit_elsa_cs);
+module_pcmcia_driver(elsa_cs_driver);
.suspend = sedlbauer_suspend,
.resume = sedlbauer_resume,
};
-
-static int __init init_sedlbauer_cs(void)
-{
- return pcmcia_register_driver(&sedlbauer_driver);
-}
-
-static void __exit exit_sedlbauer_cs(void)
-{
- pcmcia_unregister_driver(&sedlbauer_driver);
-}
-
-module_init(init_sedlbauer_cs);
-module_exit(exit_sedlbauer_cs);
+module_pcmcia_driver(sedlbauer_driver);
.suspend = teles_suspend,
.resume = teles_resume,
};
-
-static int __init init_teles_cs(void)
-{
- return pcmcia_register_driver(&teles_cs_driver);
-}
-
-static void __exit exit_teles_cs(void)
-{
- pcmcia_unregister_driver(&teles_cs_driver);
-}
-
-module_init(init_teles_cs);
-module_exit(exit_teles_cs);
+module_pcmcia_driver(teles_cs_driver);
#include <linux/module.h>
#include <linux/list.h>
#include <linux/spinlock.h>
+#include <linux/pm.h>
#include <memory/jedec_ddr.h>
#include "emif.h"
#include "of_memory.h"
u32 temp;
void __iomem *base = emif->base;
+ /*
+ * Workaround for errata i743 - LPDDR2 Power-Down State is Not
+ * Efficient
+ *
+ * i743 DESCRIPTION:
+ * The EMIF supports power-down state for low power. The EMIF
+ * automatically puts the SDRAM into power-down after the memory is
+ * not accessed for a defined number of cycles and the
+ * EMIF_PWR_MGMT_CTRL[10:8] REG_LP_MODE bit field is set to 0x4.
+ * As the EMIF supports automatic output impedance calibration, a ZQ
+ * calibration long command is issued every time it exits active
+ * power-down and precharge power-down modes. The EMIF waits and
+ * blocks any other command during this calibration.
+ * The EMIF does not allow selective disabling of ZQ calibration upon
+ * exit of power-down mode. Due to very short periods of power-down
+ * cycles, ZQ calibration overhead creates bandwidth issues and
+ * increases overall system power consumption. On the other hand,
+ * issuing ZQ calibration long commands when exiting self-refresh is
+ * still required.
+ *
+ * WORKAROUND
+ * Because there is no power consumption benefit of the power-down due
+ * to the calibration and there is a performance risk, the guideline
+ * is to not allow power-down state and, therefore, to not have set
+ * the EMIF_PWR_MGMT_CTRL[10:8] REG_LP_MODE bit field to 0x4.
+ */
+ if ((emif->plat_data->ip_rev == EMIF_4D) &&
+ (EMIF_LP_MODE_PWR_DN == lpmode)) {
+ WARN_ONCE(1,
+ "REG_LP_MODE = LP_MODE_PWR_DN(4) is prohibited by"
+ "erratum i743 switch to LP_MODE_SELF_REFRESH(2)\n");
+ /* rollback LP_MODE to Self-refresh mode */
+ lpmode = EMIF_LP_MODE_SELF_REFRESH;
+ }
+
temp = readl(base + EMIF_POWER_MANAGEMENT_CONTROL);
temp &= ~LP_MODE_MASK;
temp |= (lpmode << LP_MODE_SHIFT);
u32 timeout_perf = EMIF_LP_MODE_TIMEOUT_PERFORMANCE;
u32 timeout_pwr = EMIF_LP_MODE_TIMEOUT_POWER;
u32 freq_threshold = EMIF_LP_MODE_FREQ_THRESHOLD;
+ u32 mask;
+ u8 shift;
struct emif_custom_configs *cust_cfgs = emif->plat_data->custom_configs;
/* Timeout based on DDR frequency */
timeout = freq >= freq_threshold ? timeout_perf : timeout_pwr;
- /* The value to be set in register is "log2(timeout) - 3" */
+ /*
+ * The value to be set in register is "log2(timeout) - 3"
+ * if timeout < 16 load 0 in register
+ * if timeout is not a power of 2, round to next highest power of 2
+ */
if (timeout < 16) {
timeout = 0;
} else {
- timeout = __fls(timeout) - 3;
if (timeout & (timeout - 1))
- timeout++;
+ timeout <<= 1;
+ timeout = __fls(timeout) - 3;
}
switch (lpmode) {
case EMIF_LP_MODE_CLOCK_STOP:
- pwr_mgmt_ctrl = (timeout << CS_TIM_SHIFT) |
- SR_TIM_MASK | PD_TIM_MASK;
+ shift = CS_TIM_SHIFT;
+ mask = CS_TIM_MASK;
break;
case EMIF_LP_MODE_SELF_REFRESH:
/* Workaround for errata i735 */
if (timeout < 6)
timeout = 6;
- pwr_mgmt_ctrl = (timeout << SR_TIM_SHIFT) |
- CS_TIM_MASK | PD_TIM_MASK;
+ shift = SR_TIM_SHIFT;
+ mask = SR_TIM_MASK;
break;
case EMIF_LP_MODE_PWR_DN:
- pwr_mgmt_ctrl = (timeout << PD_TIM_SHIFT) |
- CS_TIM_MASK | SR_TIM_MASK;
+ shift = PD_TIM_SHIFT;
+ mask = PD_TIM_MASK;
break;
case EMIF_LP_MODE_DISABLE:
default:
- pwr_mgmt_ctrl = CS_TIM_MASK |
- PD_TIM_MASK | SR_TIM_MASK;
+ mask = 0;
+ shift = 0;
+ break;
}
+ /* Round to maximum in case of overflow, BUT warn! */
+ if (lpmode != EMIF_LP_MODE_DISABLE && timeout > mask >> shift) {
+ pr_err("TIMEOUT Overflow - lpmode=%d perf=%d pwr=%d freq=%d\n",
+ lpmode,
+ timeout_perf,
+ timeout_pwr,
+ freq_threshold);
+ WARN(1, "timeout=0x%02x greater than 0x%02x. Using max\n",
+ timeout, mask >> shift);
+ timeout = mask >> shift;
+ }
+
+ /* Setup required timing */
+ pwr_mgmt_ctrl = (timeout << shift) & mask;
+ /* setup a default mask for rest of the modes */
+ pwr_mgmt_ctrl |= (SR_TIM_MASK | CS_TIM_MASK | PD_TIM_MASK) &
+ ~mask;
/* No CS_TIM in EMIF_4D5 */
if (ip_rev == EMIF_4D5)
writel(regs->sdram_tim2_shdw, base + EMIF_SDRAM_TIMING_2_SHDW);
writel(regs->phy_ctrl_1_shdw, base + EMIF_DDR_PHY_CTRL_1_SHDW);
+ writel(regs->pwr_mgmt_ctrl_shdw,
+ base + EMIF_POWER_MANAGEMENT_CTRL_SHDW);
/* Settings specific for EMIF4D5 */
if (emif->plat_data->ip_rev != EMIF_4D5)
{
u32 old_temp_level;
irqreturn_t ret = IRQ_HANDLED;
+ struct emif_custom_configs *custom_configs;
spin_lock_irqsave(&emif_lock, irq_state);
old_temp_level = emif->temperature_level;
goto out;
}
+ custom_configs = emif->plat_data->custom_configs;
+
+ /*
+ * IF we detect higher than "nominal rating" from DDR sensor
+ * on an unsupported DDR part, shutdown system
+ */
+ if (custom_configs && !(custom_configs->mask &
+ EMIF_CUSTOM_CONFIG_EXTENDED_TEMP_PART)) {
+ if (emif->temperature_level >= SDRAM_TEMP_HIGH_DERATE_REFRESH) {
+ dev_err(emif->dev,
+ "%s:NOT Extended temperature capable memory."
+ "Converting MR4=0x%02x as shutdown event\n",
+ __func__, emif->temperature_level);
+ /*
+ * Temperature far too high - do kernel_power_off()
+ * from thread context
+ */
+ emif->temperature_level = SDRAM_TEMP_VERY_HIGH_SHUTDOWN;
+ ret = IRQ_WAKE_THREAD;
+ goto out;
+ }
+ }
+
if (emif->temperature_level < old_temp_level ||
emif->temperature_level == SDRAM_TEMP_VERY_HIGH_SHUTDOWN) {
/*
if (emif->temperature_level == SDRAM_TEMP_VERY_HIGH_SHUTDOWN) {
dev_emerg(emif->dev, "SDRAM temperature exceeds operating limit.. Needs shut down!!!\n");
- kernel_power_off();
+
+ /* If we have Power OFF ability, use it, else try restarting */
+ if (pm_power_off) {
+ kernel_power_off();
+ } else {
+ WARN(1, "FIXME: NO pm_power_off!!! trying restart\n");
+ kernel_restart("SDRAM Over-temp Emergency restart");
+ }
return IRQ_HANDLED;
}
{
struct emif_custom_configs *cust_cfgs = NULL;
int len;
- const int *lpmode, *poll_intvl;
+ const __be32 *lpmode, *poll_intvl;
lpmode = of_get_property(np_emif, "low-power-mode", &len);
poll_intvl = of_get_property(np_emif, "temp-alert-poll-interval", &len);
if (lpmode) {
cust_cfgs->mask |= EMIF_CUSTOM_CONFIG_LPMODE;
- cust_cfgs->lpmode = *lpmode;
+ cust_cfgs->lpmode = be32_to_cpup(lpmode);
of_property_read_u32(np_emif,
"low-power-mode-timeout-performance",
&cust_cfgs->lpmode_timeout_performance);
if (poll_intvl) {
cust_cfgs->mask |=
EMIF_CUSTOM_CONFIG_TEMP_ALERT_POLL_INTERVAL;
- cust_cfgs->temp_alert_poll_interval_ms = *poll_intvl;
+ cust_cfgs->temp_alert_poll_interval_ms =
+ be32_to_cpup(poll_intvl);
}
+ if (of_find_property(np_emif, "extended-temp-part", &len))
+ cust_cfgs->mask |= EMIF_CUSTOM_CONFIG_EXTENDED_TEMP_PART;
+
if (!is_custom_config_valid(cust_cfgs, emif->dev)) {
devm_kfree(emif->dev, cust_cfgs);
return;
if (pd->timings) {
temp = devm_kzalloc(dev, size, GFP_KERNEL);
if (temp) {
- memcpy(temp, pd->timings, sizeof(*pd->timings));
+ memcpy(temp, pd->timings, size);
pd->timings = temp;
} else {
dev_warn(dev, "%s:%d: allocation error\n", __func__,
},
};
-static int __init_or_module emif_register(void)
-{
- return platform_driver_probe(&emif_driver, emif_probe);
-}
-
-static void __exit emif_unregister(void)
-{
- platform_driver_unregister(&emif_driver);
-}
+module_platform_driver_probe(emif_driver, emif_probe);
-module_init(emif_register);
-module_exit(emif_unregister);
MODULE_DESCRIPTION("TI EMIF SDRAM Controller Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:emif");
MC_INTMASK,
};
+#ifdef CONFIG_PM
static int tegra30_mc_suspend(struct device *dev)
{
int i;
mc_readl(mc, MC_TIMING_CONTROL);
return 0;
}
+#endif
static UNIVERSAL_DEV_PM_OPS(tegra30_mc_pm,
tegra30_mc_suspend,
config MFD_PM8921_CORE
tristate "Qualcomm PM8921 PMIC chip"
- depends on MSM_SSBI
+ depends on SSBI && BROKEN
select MFD_CORE
select MFD_PM8XXX
help
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/err.h>
-#include <linux/msm_ssbi.h>
+#include <linux/ssbi.h>
#include <linux/mfd/core.h>
#include <linux/mfd/pm8xxx/pm8921.h>
#include <linux/mfd/pm8xxx/core.h>
const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
- return msm_ssbi_read(pmic->dev->parent, addr, val, 1);
+ return ssbi_read(pmic->dev->parent, addr, val, 1);
}
static int pm8921_writeb(const struct device *dev, u16 addr, u8 val)
const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
- return msm_ssbi_write(pmic->dev->parent, addr, &val, 1);
+ return ssbi_write(pmic->dev->parent, addr, &val, 1);
}
static int pm8921_read_buf(const struct device *dev, u16 addr, u8 *buf,
const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
- return msm_ssbi_read(pmic->dev->parent, addr, buf, cnt);
+ return ssbi_read(pmic->dev->parent, addr, buf, cnt);
}
static int pm8921_write_buf(const struct device *dev, u16 addr, u8 *buf,
const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev);
const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data;
- return msm_ssbi_write(pmic->dev->parent, addr, buf, cnt);
+ return ssbi_write(pmic->dev->parent, addr, buf, cnt);
}
static int pm8921_read_irq_stat(const struct device *dev, int irq)
}
/* Read PMIC chip revision */
- rc = msm_ssbi_read(pdev->dev.parent, REG_HWREV, &val, sizeof(val));
+ rc = ssbi_read(pdev->dev.parent, REG_HWREV, &val, sizeof(val));
if (rc) {
pr_err("Failed to read hw rev reg %d:rc=%d\n", REG_HWREV, rc);
goto err_read_rev;
rev = val;
/* Read PMIC chip revision 2 */
- rc = msm_ssbi_read(pdev->dev.parent, REG_HWREV_2, &val, sizeof(val));
+ rc = ssbi_read(pdev->dev.parent, REG_HWREV_2, &val, sizeof(val));
if (rc) {
pr_err("Failed to read hw rev 2 reg %d:rc=%d\n",
REG_HWREV_2, rc);
{ 0x000002A3, 0x1102 }, /* R675 - Mic Detect 1 */
{ 0x000002A4, 0x009F }, /* R676 - Mic Detect 2 */
{ 0x000002A5, 0x0000 }, /* R677 - Mic Detect 3 */
+ { 0x000002A6, 0x3737 }, /* R678 - Mic Detect Level 1 */
+ { 0x000002A7, 0x372C }, /* R679 - Mic Detect Level 2 */
+ { 0x000002A8, 0x1422 }, /* R680 - Mic Detect Level 3 */
+ { 0x000002A9, 0x030A }, /* R681 - Mic Detect Level 4 */
{ 0x000002C3, 0x0000 }, /* R707 - Mic noise mix control 1 */
{ 0x000002CB, 0x0000 }, /* R715 - Isolation control */
{ 0x000002D3, 0x0000 }, /* R723 - Jack detect analogue */
case ARIZONA_MIC_DETECT_1:
case ARIZONA_MIC_DETECT_2:
case ARIZONA_MIC_DETECT_3:
+ case ARIZONA_MIC_DETECT_LEVEL_1:
+ case ARIZONA_MIC_DETECT_LEVEL_2:
+ case ARIZONA_MIC_DETECT_LEVEL_3:
+ case ARIZONA_MIC_DETECT_LEVEL_4:
case ARIZONA_MIC_NOISE_MIX_CONTROL_1:
case ARIZONA_ISOLATION_CONTROL:
case ARIZONA_JACK_DETECT_ANALOGUE:
TC can be used for other purposes, such as PWM generation and
interval timing.
+config DUMMY_IRQ
+ tristate "Dummy IRQ handler"
+ default n
+ ---help---
+ This module accepts a single 'irq' parameter, which it should register for.
+ The sole purpose of this module is to help with debugging of systems on
+ which spurious IRQs would happen on disabled IRQ vector.
+
config IBM_ASM
tristate "Device driver for IBM RSA service processor"
depends on X86 && PCI && INPUT
obj-$(CONFIG_BMP085) += bmp085.o
obj-$(CONFIG_BMP085_I2C) += bmp085-i2c.o
obj-$(CONFIG_BMP085_SPI) += bmp085-spi.o
+obj-$(CONFIG_DUMMY_IRQ) += dummy-irq.o
obj-$(CONFIG_ICS932S401) += ics932s401.o
obj-$(CONFIG_LKDTM) += lkdtm.o
obj-$(CONFIG_TIFM_CORE) += tifm_core.o
obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o
obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/
obj-$(CONFIG_INTEL_MEI) += mei/
-obj-$(CONFIG_MAX8997_MUIC) += max8997-muic.o
obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/
obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o
if (strict_strtoul(buf, 0, &value))
return -EINVAL;
- if (chip->lux_calib > APDS_RANGE)
- return -EINVAL;
-
chip->lux_calib = value;
return len;
return 0;
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int apds990x_suspend(struct device *dev)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
return 0;
}
-#else
-#define apds990x_suspend NULL
-#define apds990x_resume NULL
-#define apds990x_shutdown NULL
#endif
#ifdef CONFIG_PM_RUNTIME
.remove = __exit_p(charlcd_remove),
};
-static int __init charlcd_init(void)
-{
- return platform_driver_probe(&charlcd_driver, charlcd_probe);
-}
-
-static void __exit charlcd_exit(void)
-{
- platform_driver_unregister(&charlcd_driver);
-}
-
-module_init(charlcd_init);
-module_exit(charlcd_exit);
+module_platform_driver_probe(charlcd_driver, charlcd_probe);
MODULE_AUTHOR("Linus Walleij <triad@df.lth.se>");
MODULE_DESCRIPTION("ARM Character LCD Driver");
*/
};
-static int __init pwm_init(void)
-{
- return platform_driver_probe(&atmel_pwm_driver, pwm_probe);
-}
-module_init(pwm_init);
-
-static void __exit pwm_exit(void)
-{
- platform_driver_unregister(&atmel_pwm_driver);
-}
-module_exit(pwm_exit);
+module_platform_driver_probe(atmel_pwm_driver, pwm_probe);
MODULE_DESCRIPTION("Driver for AT32/AT91 PWM module");
MODULE_LICENSE("GPL");
return 0;
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int bh1770_suspend(struct device *dev)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
}
return ret;
}
-
-#else
-#define bh1770_suspend NULL
-#define bh1770_shutdown NULL
-#define bh1770_resume NULL
#endif
#ifdef CONFIG_PM_RUNTIME
return 0;
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int bh1780_suspend(struct device *dev)
{
struct bh1780_data *ddata;
return 0;
}
+#endif /* CONFIG_PM_SLEEP */
+
static SIMPLE_DEV_PM_OPS(bh1780_pm, bh1780_suspend, bh1780_resume);
-#define BH1780_PMOPS (&bh1780_pm)
-#else
-#define BH1780_PMOPS NULL
-#endif /* CONFIG_PM */
static const struct i2c_device_id bh1780_id[] = {
{ "bh1780", 0 },
.id_table = bh1780_id,
.driver = {
.name = "bh1780",
- .pm = BH1780_PMOPS,
+ .pm = &bh1780_pm,
},
};
static int mfgpt_reset_timers;
module_param_named(mfgptfix, mfgpt_reset_timers, int, 0644);
-MODULE_PARM_DESC(mfgptfix, "Reset the MFGPT timers during init; "
- "required by some broken BIOSes (ie, TinyBIOS < 0.99).");
+MODULE_PARM_DESC(mfgptfix, "Try to reset the MFGPT timers during init; "
+ "required by some broken BIOSes (ie, TinyBIOS < 0.99) or kexec "
+ "(1 = reset the MFGPT using an undocumented bit, "
+ "2 = perform a soft reset by unconfiguring all timers); "
+ "use what works best for you.");
struct cs5535_mfgpt_timer {
struct cs5535_mfgpt_chip *chip;
wrmsr(MSR_MFGPT_SETUP, val, dummy);
}
+/*
+ * This is another sledgehammer to reset all MFGPT timers.
+ * Instead of using the undocumented bit method it clears
+ * IRQ, NMI and RESET settings.
+ */
+static void soft_reset(void)
+{
+ int i;
+ struct cs5535_mfgpt_timer t;
+
+ for (i = 0; i < MFGPT_MAX_TIMERS; i++) {
+ t.nr = i;
+
+ cs5535_mfgpt_toggle_event(&t, MFGPT_CMP1, MFGPT_EVENT_RESET, 0);
+ cs5535_mfgpt_toggle_event(&t, MFGPT_CMP2, MFGPT_EVENT_RESET, 0);
+ cs5535_mfgpt_toggle_event(&t, MFGPT_CMP1, MFGPT_EVENT_NMI, 0);
+ cs5535_mfgpt_toggle_event(&t, MFGPT_CMP2, MFGPT_EVENT_NMI, 0);
+ cs5535_mfgpt_toggle_event(&t, MFGPT_CMP1, MFGPT_EVENT_IRQ, 0);
+ cs5535_mfgpt_toggle_event(&t, MFGPT_CMP2, MFGPT_EVENT_IRQ, 0);
+ }
+}
+
/*
* Check whether any MFGPTs are available for the kernel to use. In most
* cases, firmware that uses AMD's VSA code will claim all timers during
int i;
/* bios workaround */
- if (mfgpt_reset_timers)
+ if (mfgpt_reset_timers == 1)
reset_all_timers();
+ else if (mfgpt_reset_timers == 2)
+ soft_reset();
/* just to be safe, protect this section w/ lock */
spin_lock_irqsave(&mfgpt->lock, flags);
for (i = 0; i < MFGPT_MAX_TIMERS; i++) {
timer.nr = i;
val = cs5535_mfgpt_read(&timer, MFGPT_REG_SETUP);
- if (!(val & MFGPT_SETUP_SETUP)) {
+ if (!(val & MFGPT_SETUP_SETUP) || mfgpt_reset_timers == 2) {
__set_bit(i, mfgpt->avail);
timers++;
}
struct resource *res;
int err = -EIO, t;
+ if (mfgpt_reset_timers < 0 || mfgpt_reset_timers > 2) {
+ dev_err(&pdev->dev, "Bad mfgpt_reset_timers value: %i\n",
+ mfgpt_reset_timers);
+ goto done;
+ }
+
/* There are two ways to get the MFGPT base address; one is by
* fetching it from MSR_LBAR_MFGPT, the other is by reading the
* PCI BAR info. The latter method is easier (especially across
--- /dev/null
+/*
+ * Dummy IRQ handler driver.
+ *
+ * This module only registers itself as a handler that is specified to it
+ * by the 'irq' parameter.
+ *
+ * The sole purpose of this module is to help with debugging of systems on
+ * which spurious IRQs would happen on disabled IRQ vector.
+ *
+ * Copyright (C) 2013 Jiri Kosina
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+
+static int irq;
+
+static irqreturn_t dummy_interrupt(int irq, void *dev_id)
+{
+ static int count = 0;
+
+ if (count == 0) {
+ printk(KERN_INFO "dummy-irq: interrupt occured on IRQ %d\n",
+ irq);
+ count++;
+ }
+
+ return IRQ_NONE;
+}
+
+static int __init dummy_irq_init(void)
+{
+ if (request_irq(irq, &dummy_interrupt, IRQF_SHARED, "dummy_irq", &irq)) {
+ printk(KERN_ERR "dummy-irq: cannot register IRQ %d\n", irq);
+ return -EIO;
+ }
+ printk(KERN_INFO "dummy-irq: registered for IRQ %d\n", irq);
+ return 0;
+}
+
+static void __exit dummy_irq_exit(void)
+{
+ printk(KERN_INFO "dummy-irq unloaded\n");
+ free_irq(irq, &irq);
+}
+
+module_init(dummy_irq_init);
+module_exit(dummy_irq_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jiri Kosina");
+module_param(irq, uint, 0444);
+MODULE_PARM_DESC(irq, "The IRQ to register for");
mutex_init(&at25->lock);
at25->chip = chip;
at25->spi = spi_dev_get(spi);
- dev_set_drvdata(&spi->dev, at25);
+ spi_set_drvdata(spi, at25);
at25->addrlen = addrlen;
/* Export the EEPROM bytes through sysfs, since that's convenient.
{
struct at25_data *at25;
- at25 = dev_get_drvdata(&spi->dev);
+ at25 = spi_get_drvdata(spi);
sysfs_remove_bin_file(&spi->dev.kobj, &at25->bin);
kfree(at25);
return 0;
dev_err(&spi->dev, "can't create erase interface\n");
}
- dev_set_drvdata(&spi->dev, edev);
+ spi_set_drvdata(spi, edev);
return 0;
fail:
kfree(edev);
static int eeprom_93xx46_remove(struct spi_device *spi)
{
- struct eeprom_93xx46_dev *edev = dev_get_drvdata(&spi->dev);
+ struct eeprom_93xx46_dev *edev = spi_get_drvdata(spi);
if (!(edev->pdata->flags & EE_READONLY))
device_remove_file(&spi->dev, &dev_attr_erase);
sysfs_remove_bin_file(&spi->dev.kobj, &edev->bin);
- dev_set_drvdata(&spi->dev, NULL);
+ spi_set_drvdata(spi, NULL);
kfree(edev);
return 0;
}
.remove = __exit_p(ep93xx_pwm_remove),
};
-static int __init ep93xx_pwm_init(void)
-{
- return platform_driver_probe(&ep93xx_pwm_driver, ep93xx_pwm_probe);
-}
-
-static void __exit ep93xx_pwm_exit(void)
-{
- platform_driver_unregister(&ep93xx_pwm_driver);
-}
-
-module_init(ep93xx_pwm_init);
-module_exit(ep93xx_pwm_exit);
+module_platform_driver_probe(ep93xx_pwm_driver, ep93xx_pwm_probe);
MODULE_AUTHOR("Matthieu Crapet <mcrapet@gmail.com>, "
"H Hartley Sweeten <hsweeten@visionengravers.com>");
static void firmware_load(const struct firmware *fw, void *context)
{
struct spi_device *spi = (struct spi_device *)context;
- struct fpga_data *data = dev_get_drvdata(&spi->dev);
+ struct fpga_data *data = spi_get_drvdata(spi);
u8 *buffer;
int ret;
u8 txbuf[8];
<http://software.intel.com/en-us/manageability/>
config INTEL_MEI_ME
- bool "ME Enabled Intel Chipsets"
- depends on INTEL_MEI
+ tristate "ME Enabled Intel Chipsets"
+ select INTEL_MEI
depends on X86 && PCI && WATCHDOG_CORE
- default y
help
MEI support for ME Enabled Intel chipsets.
mei-objs += main.o
mei-objs += amthif.o
mei-objs += wd.o
-mei-$(CONFIG_INTEL_MEI_ME) += pci-me.o
-mei-$(CONFIG_INTEL_MEI_ME) += hw-me.o
+mei-objs += bus.o
+mei-$(CONFIG_DEBUG_FS) += debugfs.o
+
+obj-$(CONFIG_INTEL_MEI_ME) += mei-me.o
+mei-me-objs := pci-me.o
+mei-me-objs += hw-me.o
struct mei_msg_hdr mei_hdr;
struct mei_cl *cl = cb->cl;
size_t len = dev->iamthif_msg_buf_size - dev->iamthif_msg_buf_index;
- size_t msg_slots = mei_data2slots(len);
+ u32 msg_slots = mei_data2slots(len);
mei_hdr.host_addr = cl->host_client_id;
mei_hdr.me_addr = cl->me_client_id;
*/
int mei_amthif_irq_read(struct mei_device *dev, s32 *slots)
{
+ u32 msg_slots = mei_data2slots(sizeof(struct hbm_flow_control));
- if (((*slots) * sizeof(u32)) < (sizeof(struct mei_msg_hdr)
- + sizeof(struct hbm_flow_control))) {
+ if (*slots < msg_slots)
return -EMSGSIZE;
- }
- *slots -= mei_data2slots(sizeof(struct hbm_flow_control));
+
+ *slots -= msg_slots;
+
if (mei_hbm_cl_flow_control_req(dev, &dev->iamthif_cl)) {
dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
return -EIO;
--- /dev/null
+/*
+ * Intel Management Engine Interface (Intel MEI) Linux driver
+ * Copyright (c) 2012-2013, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/mei_cl_bus.h>
+
+#include "mei_dev.h"
+#include "hw-me.h"
+#include "client.h"
+
+#define to_mei_cl_driver(d) container_of(d, struct mei_cl_driver, driver)
+#define to_mei_cl_device(d) container_of(d, struct mei_cl_device, dev)
+
+static int mei_cl_device_match(struct device *dev, struct device_driver *drv)
+{
+ struct mei_cl_device *device = to_mei_cl_device(dev);
+ struct mei_cl_driver *driver = to_mei_cl_driver(drv);
+ const struct mei_cl_device_id *id;
+
+ if (!device)
+ return 0;
+
+ if (!driver || !driver->id_table)
+ return 0;
+
+ id = driver->id_table;
+
+ while (id->name[0]) {
+ if (!strcmp(dev_name(dev), id->name))
+ return 1;
+
+ id++;
+ }
+
+ return 0;
+}
+
+static int mei_cl_device_probe(struct device *dev)
+{
+ struct mei_cl_device *device = to_mei_cl_device(dev);
+ struct mei_cl_driver *driver;
+ struct mei_cl_device_id id;
+
+ if (!device)
+ return 0;
+
+ driver = to_mei_cl_driver(dev->driver);
+ if (!driver || !driver->probe)
+ return -ENODEV;
+
+ dev_dbg(dev, "Device probe\n");
+
+ strncpy(id.name, dev_name(dev), MEI_CL_NAME_SIZE);
+
+ return driver->probe(device, &id);
+}
+
+static int mei_cl_device_remove(struct device *dev)
+{
+ struct mei_cl_device *device = to_mei_cl_device(dev);
+ struct mei_cl_driver *driver;
+
+ if (!device || !dev->driver)
+ return 0;
+
+ if (device->event_cb) {
+ device->event_cb = NULL;
+ cancel_work_sync(&device->event_work);
+ }
+
+ driver = to_mei_cl_driver(dev->driver);
+ if (!driver->remove) {
+ dev->driver = NULL;
+
+ return 0;
+ }
+
+ return driver->remove(device);
+}
+
+static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
+ char *buf)
+{
+ int len;
+
+ len = snprintf(buf, PAGE_SIZE, "mei:%s\n", dev_name(dev));
+
+ return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
+}
+
+static struct device_attribute mei_cl_dev_attrs[] = {
+ __ATTR_RO(modalias),
+ __ATTR_NULL,
+};
+
+static int mei_cl_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ if (add_uevent_var(env, "MODALIAS=mei:%s", dev_name(dev)))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static struct bus_type mei_cl_bus_type = {
+ .name = "mei",
+ .dev_attrs = mei_cl_dev_attrs,
+ .match = mei_cl_device_match,
+ .probe = mei_cl_device_probe,
+ .remove = mei_cl_device_remove,
+ .uevent = mei_cl_uevent,
+};
+
+static void mei_cl_dev_release(struct device *dev)
+{
+ kfree(to_mei_cl_device(dev));
+}
+
+static struct device_type mei_cl_device_type = {
+ .release = mei_cl_dev_release,
+};
+
+static struct mei_cl *mei_bus_find_mei_cl_by_uuid(struct mei_device *dev,
+ uuid_le uuid)
+{
+ struct mei_cl *cl, *next;
+
+ list_for_each_entry_safe(cl, next, &dev->device_list, device_link) {
+ if (!uuid_le_cmp(uuid, cl->device_uuid))
+ return cl;
+ }
+
+ return NULL;
+}
+struct mei_cl_device *mei_cl_add_device(struct mei_device *dev,
+ uuid_le uuid, char *name)
+{
+ struct mei_cl_device *device;
+ struct mei_cl *cl;
+ int status;
+
+ cl = mei_bus_find_mei_cl_by_uuid(dev, uuid);
+ if (cl == NULL)
+ return NULL;
+
+ device = kzalloc(sizeof(struct mei_cl_device), GFP_KERNEL);
+ if (!device)
+ return NULL;
+
+ device->cl = cl;
+
+ device->dev.parent = &dev->pdev->dev;
+ device->dev.bus = &mei_cl_bus_type;
+ device->dev.type = &mei_cl_device_type;
+
+ dev_set_name(&device->dev, "%s", name);
+
+ status = device_register(&device->dev);
+ if (status) {
+ dev_err(&dev->pdev->dev, "Failed to register MEI device\n");
+ kfree(device);
+ return NULL;
+ }
+
+ cl->device = device;
+
+ dev_dbg(&device->dev, "client %s registered\n", name);
+
+ return device;
+}
+EXPORT_SYMBOL_GPL(mei_cl_add_device);
+
+void mei_cl_remove_device(struct mei_cl_device *device)
+{
+ device_unregister(&device->dev);
+}
+EXPORT_SYMBOL_GPL(mei_cl_remove_device);
+
+int __mei_cl_driver_register(struct mei_cl_driver *driver, struct module *owner)
+{
+ int err;
+
+ driver->driver.name = driver->name;
+ driver->driver.owner = owner;
+ driver->driver.bus = &mei_cl_bus_type;
+
+ err = driver_register(&driver->driver);
+ if (err)
+ return err;
+
+ pr_debug("mei: driver [%s] registered\n", driver->driver.name);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(__mei_cl_driver_register);
+
+void mei_cl_driver_unregister(struct mei_cl_driver *driver)
+{
+ driver_unregister(&driver->driver);
+
+ pr_debug("mei: driver [%s] unregistered\n", driver->driver.name);
+}
+EXPORT_SYMBOL_GPL(mei_cl_driver_unregister);
+
+static int ___mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length,
+ bool blocking)
+{
+ struct mei_device *dev;
+ struct mei_msg_hdr mei_hdr;
+ struct mei_cl_cb *cb;
+ int me_cl_id, err;
+
+ if (WARN_ON(!cl || !cl->dev))
+ return -ENODEV;
+
+ if (cl->state != MEI_FILE_CONNECTED)
+ return -ENODEV;
+
+ cb = mei_io_cb_init(cl, NULL);
+ if (!cb)
+ return -ENOMEM;
+
+ err = mei_io_cb_alloc_req_buf(cb, length);
+ if (err < 0) {
+ mei_io_cb_free(cb);
+ return err;
+ }
+
+ memcpy(cb->request_buffer.data, buf, length);
+ cb->fop_type = MEI_FOP_WRITE;
+
+ dev = cl->dev;
+
+ mutex_lock(&dev->device_lock);
+
+ /* Check if we have an ME client device */
+ me_cl_id = mei_me_cl_by_id(dev, cl->me_client_id);
+ if (me_cl_id == dev->me_clients_num) {
+ err = -ENODEV;
+ goto out_err;
+ }
+
+ if (length > dev->me_clients[me_cl_id].props.max_msg_length) {
+ err = -EINVAL;
+ goto out_err;
+ }
+
+ err = mei_cl_flow_ctrl_creds(cl);
+ if (err < 0)
+ goto out_err;
+
+ /* Host buffer is not ready, we queue the request */
+ if (err == 0 || !dev->hbuf_is_ready) {
+ cb->buf_idx = 0;
+ mei_hdr.msg_complete = 0;
+ cl->writing_state = MEI_WRITING;
+
+ goto out;
+ }
+
+ dev->hbuf_is_ready = false;
+
+ /* Check for a maximum length */
+ if (length > mei_hbuf_max_len(dev)) {
+ mei_hdr.length = mei_hbuf_max_len(dev);
+ mei_hdr.msg_complete = 0;
+ } else {
+ mei_hdr.length = length;
+ mei_hdr.msg_complete = 1;
+ }
+
+ mei_hdr.host_addr = cl->host_client_id;
+ mei_hdr.me_addr = cl->me_client_id;
+ mei_hdr.reserved = 0;
+
+ if (mei_write_message(dev, &mei_hdr, buf)) {
+ err = -EIO;
+ goto out_err;
+ }
+
+ cl->writing_state = MEI_WRITING;
+ cb->buf_idx = mei_hdr.length;
+
+out:
+ if (mei_hdr.msg_complete) {
+ if (mei_cl_flow_ctrl_reduce(cl)) {
+ err = -ENODEV;
+ goto out_err;
+ }
+ list_add_tail(&cb->list, &dev->write_waiting_list.list);
+ } else {
+ list_add_tail(&cb->list, &dev->write_list.list);
+ }
+
+ mutex_unlock(&dev->device_lock);
+
+ if (blocking && cl->writing_state != MEI_WRITE_COMPLETE) {
+ if (wait_event_interruptible(cl->tx_wait,
+ cl->writing_state == MEI_WRITE_COMPLETE)) {
+ if (signal_pending(current))
+ err = -EINTR;
+ err = -ERESTARTSYS;
+ mutex_lock(&dev->device_lock);
+ goto out_err;
+ }
+ }
+
+ return mei_hdr.length;
+
+out_err:
+ mutex_unlock(&dev->device_lock);
+ mei_io_cb_free(cb);
+
+ return err;
+}
+
+int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
+{
+ struct mei_device *dev;
+ struct mei_cl_cb *cb;
+ size_t r_length;
+ int err;
+
+ if (WARN_ON(!cl || !cl->dev))
+ return -ENODEV;
+
+ dev = cl->dev;
+
+ mutex_lock(&dev->device_lock);
+
+ if (!cl->read_cb) {
+ err = mei_cl_read_start(cl);
+ if (err < 0) {
+ mutex_unlock(&dev->device_lock);
+ return err;
+ }
+ }
+
+ if (cl->reading_state != MEI_READ_COMPLETE &&
+ !waitqueue_active(&cl->rx_wait)) {
+ mutex_unlock(&dev->device_lock);
+
+ if (wait_event_interruptible(cl->rx_wait,
+ (MEI_READ_COMPLETE == cl->reading_state))) {
+ if (signal_pending(current))
+ return -EINTR;
+ return -ERESTARTSYS;
+ }
+
+ mutex_lock(&dev->device_lock);
+ }
+
+ cb = cl->read_cb;
+
+ if (cl->reading_state != MEI_READ_COMPLETE) {
+ r_length = 0;
+ goto out;
+ }
+
+ r_length = min_t(size_t, length, cb->buf_idx);
+
+ memcpy(buf, cb->response_buffer.data, r_length);
+
+ mei_io_cb_free(cb);
+ cl->reading_state = MEI_IDLE;
+ cl->read_cb = NULL;
+
+out:
+ mutex_unlock(&dev->device_lock);
+
+ return r_length;
+}
+
+inline int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length)
+{
+ return ___mei_cl_send(cl, buf, length, 0);
+}
+
+inline int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length)
+{
+ return ___mei_cl_send(cl, buf, length, 1);
+}
+
+int mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length)
+{
+ struct mei_cl *cl = device->cl;
+
+ if (cl == NULL)
+ return -ENODEV;
+
+ if (device->ops && device->ops->send)
+ return device->ops->send(device, buf, length);
+
+ return __mei_cl_send(cl, buf, length);
+}
+EXPORT_SYMBOL_GPL(mei_cl_send);
+
+int mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length)
+{
+ struct mei_cl *cl = device->cl;
+
+ if (cl == NULL)
+ return -ENODEV;
+
+ if (device->ops && device->ops->recv)
+ return device->ops->recv(device, buf, length);
+
+ return __mei_cl_recv(cl, buf, length);
+}
+EXPORT_SYMBOL_GPL(mei_cl_recv);
+
+static void mei_bus_event_work(struct work_struct *work)
+{
+ struct mei_cl_device *device;
+
+ device = container_of(work, struct mei_cl_device, event_work);
+
+ if (device->event_cb)
+ device->event_cb(device, device->events, device->event_context);
+
+ device->events = 0;
+
+ /* Prepare for the next read */
+ mei_cl_read_start(device->cl);
+}
+
+int mei_cl_register_event_cb(struct mei_cl_device *device,
+ mei_cl_event_cb_t event_cb, void *context)
+{
+ if (device->event_cb)
+ return -EALREADY;
+
+ device->events = 0;
+ device->event_cb = event_cb;
+ device->event_context = context;
+ INIT_WORK(&device->event_work, mei_bus_event_work);
+
+ mei_cl_read_start(device->cl);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mei_cl_register_event_cb);
+
+void *mei_cl_get_drvdata(const struct mei_cl_device *device)
+{
+ return dev_get_drvdata(&device->dev);
+}
+EXPORT_SYMBOL_GPL(mei_cl_get_drvdata);
+
+void mei_cl_set_drvdata(struct mei_cl_device *device, void *data)
+{
+ dev_set_drvdata(&device->dev, data);
+}
+EXPORT_SYMBOL_GPL(mei_cl_set_drvdata);
+
+void mei_cl_bus_rx_event(struct mei_cl *cl)
+{
+ struct mei_cl_device *device = cl->device;
+
+ if (!device || !device->event_cb)
+ return;
+
+ set_bit(MEI_CL_EVENT_RX, &device->events);
+
+ schedule_work(&device->event_work);
+}
+
+int __init mei_cl_bus_init(void)
+{
+ return bus_register(&mei_cl_bus_type);
+}
+
+void __exit mei_cl_bus_exit(void)
+{
+ bus_unregister(&mei_cl_bus_type);
+}
init_waitqueue_head(&cl->rx_wait);
init_waitqueue_head(&cl->tx_wait);
INIT_LIST_HEAD(&cl->link);
+ INIT_LIST_HEAD(&cl->device_link);
cl->reading_state = MEI_IDLE;
cl->writing_state = MEI_IDLE;
cl->dev = dev;
--- /dev/null
+/*
+ *
+ * Intel Management Engine Interface (Intel MEI) Linux driver
+ * Copyright (c) 2012-2013, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ */
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/pci.h>
+
+#include <linux/mei.h>
+
+#include "mei_dev.h"
+#include "hw.h"
+
+static int mei_dbgfs_open(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+static ssize_t mei_dbgfs_read_meclients(struct file *fp, char __user *ubuf,
+ size_t cnt, loff_t *ppos)
+{
+ struct mei_device *dev = fp->private_data;
+ struct mei_me_client *cl;
+ const size_t bufsz = 1024;
+ char *buf = kzalloc(bufsz, GFP_KERNEL);
+ int i;
+ int pos = 0;
+ int ret;
+
+ if (!buf)
+ return -ENOMEM;
+
+ pos += scnprintf(buf + pos, bufsz - pos,
+ " |id|addr| UUID |con|msg len|\n");
+
+ mutex_lock(&dev->device_lock);
+
+ /* if the driver is not enabled the list won't b consitent */
+ if (dev->dev_state != MEI_DEV_ENABLED)
+ goto out;
+
+ for (i = 0; i < dev->me_clients_num; i++) {
+ cl = &dev->me_clients[i];
+
+ /* skip me clients that cannot be connected */
+ if (cl->props.max_number_of_connections == 0)
+ continue;
+
+ pos += scnprintf(buf + pos, bufsz - pos,
+ "%2d|%2d|%4d|%pUl|%3d|%7d|\n",
+ i, cl->client_id,
+ cl->props.fixed_address,
+ &cl->props.protocol_name,
+ cl->props.max_number_of_connections,
+ cl->props.max_msg_length);
+ }
+out:
+ mutex_unlock(&dev->device_lock);
+ ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, pos);
+ kfree(buf);
+ return ret;
+}
+
+static const struct file_operations mei_dbgfs_fops_meclients = {
+ .open = mei_dbgfs_open,
+ .read = mei_dbgfs_read_meclients,
+ .llseek = generic_file_llseek,
+};
+
+static ssize_t mei_dbgfs_read_devstate(struct file *fp, char __user *ubuf,
+ size_t cnt, loff_t *ppos)
+{
+ struct mei_device *dev = fp->private_data;
+ const size_t bufsz = 1024;
+ char *buf = kzalloc(bufsz, GFP_KERNEL);
+ int pos = 0;
+ int ret;
+
+ if (!buf)
+ return -ENOMEM;
+
+ pos += scnprintf(buf + pos, bufsz - pos, "%s\n",
+ mei_dev_state_str(dev->dev_state));
+ ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, pos);
+ kfree(buf);
+ return ret;
+}
+static const struct file_operations mei_dbgfs_fops_devstate = {
+ .open = mei_dbgfs_open,
+ .read = mei_dbgfs_read_devstate,
+ .llseek = generic_file_llseek,
+};
+
+/**
+ * mei_dbgfs_deregister - Remove the debugfs files and directories
+ * @mei - pointer to mei device private dat
+ */
+void mei_dbgfs_deregister(struct mei_device *dev)
+{
+ if (!dev->dbgfs_dir)
+ return;
+ debugfs_remove_recursive(dev->dbgfs_dir);
+ dev->dbgfs_dir = NULL;
+}
+
+/**
+ * Add the debugfs files
+ *
+ */
+int mei_dbgfs_register(struct mei_device *dev, const char *name)
+{
+ struct dentry *dir, *f;
+ dir = debugfs_create_dir(name, NULL);
+ if (!dir)
+ return -ENOMEM;
+
+ f = debugfs_create_file("meclients", S_IRUSR, dir,
+ dev, &mei_dbgfs_fops_meclients);
+ if (!f) {
+ dev_err(&dev->pdev->dev, "meclients: registration failed\n");
+ goto err;
+ }
+ f = debugfs_create_file("devstate", S_IRUSR, dir,
+ dev, &mei_dbgfs_fops_devstate);
+ if (!f) {
+ dev_err(&dev->pdev->dev, "devstate: registration failed\n");
+ goto err;
+ }
+ dev->dbgfs_dir = dir;
+ return 0;
+err:
+ mei_dbgfs_deregister(dev);
+ return -ENODEV;
+}
+
/**
- * mei_reg_read - Reads 32bit data from the mei device
+ * mei_me_reg_read - Reads 32bit data from the mei device
*
* @dev: the device structure
* @offset: offset from which to read the data
*
* returns register value (u32)
*/
-static inline u32 mei_reg_read(const struct mei_me_hw *hw,
+static inline u32 mei_me_reg_read(const struct mei_me_hw *hw,
unsigned long offset)
{
return ioread32(hw->mem_addr + offset);
/**
- * mei_reg_write - Writes 32bit data to the mei device
+ * mei_me_reg_write - Writes 32bit data to the mei device
*
* @dev: the device structure
* @offset: offset from which to write the data
* @value: register value to write (u32)
*/
-static inline void mei_reg_write(const struct mei_me_hw *hw,
+static inline void mei_me_reg_write(const struct mei_me_hw *hw,
unsigned long offset, u32 value)
{
iowrite32(value, hw->mem_addr + offset);
}
/**
- * mei_mecbrw_read - Reads 32bit data from ME circular buffer
+ * mei_me_mecbrw_read - Reads 32bit data from ME circular buffer
* read window register
*
* @dev: the device structure
*/
static u32 mei_me_mecbrw_read(const struct mei_device *dev)
{
- return mei_reg_read(to_me_hw(dev), ME_CB_RW);
+ return mei_me_reg_read(to_me_hw(dev), ME_CB_RW);
}
/**
- * mei_mecsr_read - Reads 32bit data from the ME CSR
+ * mei_me_mecsr_read - Reads 32bit data from the ME CSR
*
* @dev: the device structure
*
* returns ME_CSR_HA register value (u32)
*/
-static inline u32 mei_mecsr_read(const struct mei_me_hw *hw)
+static inline u32 mei_me_mecsr_read(const struct mei_me_hw *hw)
{
- return mei_reg_read(hw, ME_CSR_HA);
+ return mei_me_reg_read(hw, ME_CSR_HA);
}
/**
*/
static inline u32 mei_hcsr_read(const struct mei_me_hw *hw)
{
- return mei_reg_read(hw, H_CSR);
+ return mei_me_reg_read(hw, H_CSR);
}
/**
static inline void mei_hcsr_set(struct mei_me_hw *hw, u32 hcsr)
{
hcsr &= ~H_IS;
- mei_reg_write(hw, H_CSR, hcsr);
+ mei_me_reg_write(hw, H_CSR, hcsr);
}
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr = mei_hcsr_read(hw);
if ((hcsr & H_IS) == H_IS)
- mei_reg_write(hw, H_CSR, hcsr);
+ mei_me_reg_write(hw, H_CSR, hcsr);
}
/**
* mei_me_intr_enable - enables mei device interrupts
static bool mei_me_hw_is_ready(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
- hw->me_hw_state = mei_mecsr_read(hw);
+ hw->me_hw_state = mei_me_mecsr_read(hw);
return (hw->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA;
}
+static int mei_me_hw_ready_wait(struct mei_device *dev)
+{
+ int err;
+ if (mei_me_hw_is_ready(dev))
+ return 0;
+
+ mutex_unlock(&dev->device_lock);
+ err = wait_event_interruptible_timeout(dev->wait_hw_ready,
+ dev->recvd_hw_ready, MEI_INTEROP_TIMEOUT);
+ mutex_lock(&dev->device_lock);
+ if (!err && !dev->recvd_hw_ready) {
+ dev_err(&dev->pdev->dev,
+ "wait hw ready failed. status = 0x%x\n", err);
+ return -ETIMEDOUT;
+ }
+
+ dev->recvd_hw_ready = false;
+ return 0;
+}
+
+static int mei_me_hw_start(struct mei_device *dev)
+{
+ int ret = mei_me_hw_ready_wait(dev);
+ if (ret)
+ return ret;
+ dev_dbg(&dev->pdev->dev, "hw is ready\n");
+
+ mei_me_host_set_ready(dev);
+ return ret;
+}
+
+
/**
* mei_hbuf_filled_slots - gets number of device filled buffer slots
*
unsigned char *buf)
{
struct mei_me_hw *hw = to_me_hw(dev);
- unsigned long rem, dw_cnt;
+ unsigned long rem;
unsigned long length = header->length;
u32 *reg_buf = (u32 *)buf;
u32 hcsr;
+ u32 dw_cnt;
int i;
int empty_slots;
if (empty_slots < 0 || dw_cnt > empty_slots)
return -EIO;
- mei_reg_write(hw, H_CB_WW, *((u32 *) header));
+ mei_me_reg_write(hw, H_CB_WW, *((u32 *) header));
for (i = 0; i < length / 4; i++)
- mei_reg_write(hw, H_CB_WW, reg_buf[i]);
+ mei_me_reg_write(hw, H_CB_WW, reg_buf[i]);
rem = length & 0x3;
if (rem > 0) {
u32 reg = 0;
memcpy(®, &buf[length - rem], rem);
- mei_reg_write(hw, H_CB_WW, reg);
+ mei_me_reg_write(hw, H_CB_WW, reg);
}
hcsr = mei_hcsr_read(hw) | H_IG;
char read_ptr, write_ptr;
unsigned char buffer_depth, filled_slots;
- hw->me_hw_state = mei_mecsr_read(hw);
+ hw->me_hw_state = mei_me_mecsr_read(hw);
buffer_depth = (unsigned char)((hw->me_hw_state & ME_CBD_HRA) >> 24);
read_ptr = (char) ((hw->me_hw_state & ME_CBRP_HRA) >> 8);
write_ptr = (char) ((hw->me_hw_state & ME_CBWP_HRA) >> 16);
return IRQ_NONE;
/* clear H_IS bit in H_CSR */
- mei_reg_write(hw, H_CSR, csr_reg);
+ mei_me_reg_write(hw, H_CSR, csr_reg);
return IRQ_WAKE_THREAD;
}
{
struct mei_device *dev = (struct mei_device *) dev_id;
struct mei_cl_cb complete_list;
- struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL;
- struct mei_cl *cl;
s32 slots;
int rets;
bool bus_message_received;
if (mei_hw_is_ready(dev)) {
dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
- mei_host_set_ready(dev);
-
- dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n");
- /* link is established * start sending messages. */
-
- dev->dev_state = MEI_DEV_INIT_CLIENTS;
+ dev->recvd_hw_ready = true;
+ wake_up_interruptible(&dev->wait_hw_ready);
- mei_hbm_start_req(dev);
mutex_unlock(&dev->device_lock);
return IRQ_HANDLED;
} else {
wake_up_interruptible(&dev->wait_recvd_msg);
bus_message_received = false;
}
- if (list_empty(&complete_list.list))
- return IRQ_HANDLED;
+ mei_irq_compl_handler(dev, &complete_list);
- list_for_each_entry_safe(cb_pos, cb_next, &complete_list.list, list) {
- cl = cb_pos->cl;
- list_del(&cb_pos->list);
- if (cl) {
- if (cl != &dev->iamthif_cl) {
- dev_dbg(&dev->pdev->dev, "completing call back.\n");
- mei_irq_complete_handler(cl, cb_pos);
- cb_pos = NULL;
- } else if (cl == &dev->iamthif_cl) {
- mei_amthif_complete(dev, cb_pos);
- }
- }
- }
return IRQ_HANDLED;
}
static const struct mei_hw_ops mei_me_hw_ops = {
- .host_set_ready = mei_me_host_set_ready,
.host_is_ready = mei_me_host_is_ready,
.hw_is_ready = mei_me_hw_is_ready,
.hw_reset = mei_me_hw_reset,
- .hw_config = mei_me_hw_config,
+ .hw_config = mei_me_hw_config,
+ .hw_start = mei_me_hw_start,
.intr_clear = mei_me_intr_clear,
.intr_enable = mei_me_intr_enable,
mei_device_init(dev);
- INIT_LIST_HEAD(&dev->wd_cl.link);
- INIT_LIST_HEAD(&dev->iamthif_cl.link);
- mei_io_list_init(&dev->amthif_cmd_list);
- mei_io_list_init(&dev->amthif_rd_complete_list);
-
- INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
- INIT_WORK(&dev->init_work, mei_host_client_init);
-
dev->ops = &mei_me_hw_ops;
dev->pdev = pdev;
struct mei_device *mei_me_dev_init(struct pci_dev *pdev);
-/* get slots (dwords) from a message length + header (bytes) */
-static inline unsigned char mei_data2slots(size_t length)
-{
- return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4);
-}
-
irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id);
irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id);
*
*/
+#include <linux/export.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/mei.h>
#include "mei_dev.h"
+#include "hbm.h"
#include "client.h"
const char *mei_dev_state_str(int state)
MEI_DEV_STATE(ENABLED);
MEI_DEV_STATE(RESETING);
MEI_DEV_STATE(DISABLED);
- MEI_DEV_STATE(RECOVERING_FROM_RESET);
MEI_DEV_STATE(POWER_DOWN);
MEI_DEV_STATE(POWER_UP);
default:
{
/* setup our list array */
INIT_LIST_HEAD(&dev->file_list);
+ INIT_LIST_HEAD(&dev->device_list);
mutex_init(&dev->device_lock);
+ init_waitqueue_head(&dev->wait_hw_ready);
init_waitqueue_head(&dev->wait_recvd_msg);
init_waitqueue_head(&dev->wait_stop_wd);
dev->dev_state = MEI_DEV_INITIALIZING;
mei_io_list_init(&dev->write_waiting_list);
mei_io_list_init(&dev->ctrl_wr_list);
mei_io_list_init(&dev->ctrl_rd_list);
+
+ INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
+ INIT_WORK(&dev->init_work, mei_host_client_init);
+
+ INIT_LIST_HEAD(&dev->wd_cl.link);
+ INIT_LIST_HEAD(&dev->iamthif_cl.link);
+ mei_io_list_init(&dev->amthif_cmd_list);
+ mei_io_list_init(&dev->amthif_rd_complete_list);
+
}
+EXPORT_SYMBOL_GPL(mei_device_init);
/**
- * mei_hw_init - initializes host and fw to start work.
+ * mei_start - initializes host and fw to start work.
*
* @dev: the device structure
*
* returns 0 on success, <0 on failure.
*/
-int mei_hw_init(struct mei_device *dev)
+int mei_start(struct mei_device *dev)
{
int ret = 0;
mutex_unlock(&dev->device_lock);
return -ENODEV;
}
+EXPORT_SYMBOL_GPL(mei_start);
/**
* mei_reset - resets host and fw.
{
bool unexpected;
- if (dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET)
- return;
-
unexpected = (dev->dev_state != MEI_DEV_INITIALIZING &&
dev->dev_state != MEI_DEV_DISABLED &&
dev->dev_state != MEI_DEV_POWER_DOWN &&
dev_warn(&dev->pdev->dev, "unexpected reset: dev_state = %s\n",
mei_dev_state_str(dev->dev_state));
+ if (!interrupts_enabled) {
+ dev_dbg(&dev->pdev->dev, "intr not enabled end of reset\n");
+ return;
+ }
+
+ mei_hw_start(dev);
+
+ dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n");
+ /* link is established * start sending messages. */
+
+ dev->dev_state = MEI_DEV_INIT_CLIENTS;
+
+ mei_hbm_start_req(dev);
+
/* wake up all readings so they can be interrupted */
mei_cl_all_read_wakeup(dev);
/* remove all waiting requests */
mei_cl_all_write_clear(dev);
}
+EXPORT_SYMBOL_GPL(mei_reset);
void mei_stop(struct mei_device *dev)
{
mutex_unlock(&dev->device_lock);
flush_scheduled_work();
-}
+ mei_watchdog_unregister(dev);
+}
+EXPORT_SYMBOL_GPL(mei_stop);
*/
+#include <linux/export.h>
#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
/**
- * mei_complete_handler - processes completed operation.
+ * mei_cl_complete_handler - processes completed operation for a client
*
* @cl: private data of the file object.
- * @cb_pos: callback block.
+ * @cb: callback block.
*/
-void mei_irq_complete_handler(struct mei_cl *cl, struct mei_cl_cb *cb_pos)
+static void mei_cl_complete_handler(struct mei_cl *cl, struct mei_cl_cb *cb)
{
- if (cb_pos->fop_type == MEI_FOP_WRITE) {
- mei_io_cb_free(cb_pos);
- cb_pos = NULL;
+ if (cb->fop_type == MEI_FOP_WRITE) {
+ mei_io_cb_free(cb);
+ cb = NULL;
cl->writing_state = MEI_WRITE_COMPLETE;
if (waitqueue_active(&cl->tx_wait))
wake_up_interruptible(&cl->tx_wait);
- } else if (cb_pos->fop_type == MEI_FOP_READ &&
+ } else if (cb->fop_type == MEI_FOP_READ &&
MEI_READING == cl->reading_state) {
cl->reading_state = MEI_READ_COMPLETE;
if (waitqueue_active(&cl->rx_wait))
wake_up_interruptible(&cl->rx_wait);
+ else
+ mei_cl_bus_rx_event(cl);
}
}
+/**
+ * mei_irq_compl_handler - dispatch complete handelers
+ * for the completed callbacks
+ *
+ * @dev - mei device
+ * @compl_list - list of completed cbs
+ */
+void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *compl_list)
+{
+ struct mei_cl_cb *cb, *next;
+ struct mei_cl *cl;
+
+ list_for_each_entry_safe(cb, next, &compl_list->list, list) {
+ cl = cb->cl;
+ list_del(&cb->list);
+ if (!cl)
+ continue;
+
+ dev_dbg(&dev->pdev->dev, "completing call back.\n");
+ if (cl == &dev->iamthif_cl)
+ mei_amthif_complete(dev, cb);
+ else
+ mei_cl_complete_handler(cl, cb);
+ }
+}
+EXPORT_SYMBOL_GPL(mei_irq_compl_handler);
/**
* _mei_irq_thread_state_ok - checks if mei header matches file private data
*
struct mei_cl *cl,
struct mei_cl_cb *cmpl_list)
{
- if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_connect_request)))
- return -EBADMSG;
+ u32 msg_slots =
+ mei_data2slots(sizeof(struct hbm_client_connect_request));
+
+ if (*slots < msg_slots)
+ return -EMSGSIZE;
- *slots -= mei_data2slots(sizeof(struct hbm_client_connect_request));
+ *slots -= msg_slots;
if (mei_hbm_cl_disconnect_req(dev, cl)) {
cl->status = 0;
cb_pos->buf_idx = 0;
list_move_tail(&cb_pos->list, &cmpl_list->list);
- return -EMSGSIZE;
- } else {
- cl->state = MEI_FILE_DISCONNECTING;
- cl->status = 0;
- cb_pos->buf_idx = 0;
- list_move_tail(&cb_pos->list, &dev->ctrl_rd_list.list);
- cl->timer_count = MEI_CONNECT_TIMEOUT;
+ return -EIO;
}
+ cl->state = MEI_FILE_DISCONNECTING;
+ cl->status = 0;
+ cb_pos->buf_idx = 0;
+ list_move_tail(&cb_pos->list, &dev->ctrl_rd_list.list);
+ cl->timer_count = MEI_CONNECT_TIMEOUT;
+
return 0;
}
struct mei_cl *cl,
struct mei_cl_cb *cmpl_list)
{
- if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_flow_control))) {
+ u32 msg_slots = mei_data2slots(sizeof(struct hbm_flow_control));
+
+ if (*slots < msg_slots) {
/* return the cancel routine */
list_del(&cb_pos->list);
- return -EBADMSG;
+ return -EMSGSIZE;
}
- *slots -= mei_data2slots(sizeof(struct hbm_flow_control));
+ *slots -= msg_slots;
if (mei_hbm_cl_flow_control_req(dev, cl)) {
cl->status = -ENODEV;
struct mei_cl *cl,
struct mei_cl_cb *cmpl_list)
{
- if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_connect_request))) {
+ u32 msg_slots =
+ mei_data2slots(sizeof(struct hbm_client_connect_request));
+
+ if (*slots < msg_slots) {
/* return the cancel routine */
list_del(&cb_pos->list);
- return -EBADMSG;
+ return -EMSGSIZE;
}
+ *slots -= msg_slots;
+
cl->state = MEI_FILE_CONNECTING;
- *slots -= mei_data2slots(sizeof(struct hbm_client_connect_request));
+
if (mei_hbm_cl_connect_req(dev, cl)) {
cl->status = -ENODEV;
cb_pos->buf_idx = 0;
struct mei_msg_hdr mei_hdr;
struct mei_cl *cl = cb->cl;
size_t len = cb->request_buffer.size - cb->buf_idx;
- size_t msg_slots = mei_data2slots(len);
+ u32 msg_slots = mei_data2slots(len);
mei_hdr.host_addr = cl->host_client_id;
mei_hdr.me_addr = cl->me_client_id;
end:
return ret;
}
+EXPORT_SYMBOL_GPL(mei_irq_read_handler);
/**
*
* returns 0 on success, <0 on failure.
*/
-int mei_irq_write_handler(struct mei_device *dev,
- struct mei_cl_cb *cmpl_list)
+int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
{
struct mei_cl *cl;
}
return 0;
}
+EXPORT_SYMBOL_GPL(mei_irq_write_handler);
.minor = MISC_DYNAMIC_MINOR,
};
-int mei_register(struct device *dev)
+
+int mei_register(struct mei_device *dev)
{
- mei_misc_device.parent = dev;
- return misc_register(&mei_misc_device);
+ int ret;
+ mei_misc_device.parent = &dev->pdev->dev;
+ ret = misc_register(&mei_misc_device);
+ if (ret)
+ return ret;
+
+ if (mei_dbgfs_register(dev, mei_misc_device.name))
+ dev_err(&dev->pdev->dev, "cannot register debugfs\n");
+
+ return 0;
}
+EXPORT_SYMBOL_GPL(mei_register);
-void mei_deregister(void)
+void mei_deregister(struct mei_device *dev)
{
+ mei_dbgfs_deregister(dev);
misc_deregister(&mei_misc_device);
mei_misc_device.parent = NULL;
}
+EXPORT_SYMBOL_GPL(mei_deregister);
+
+static int __init mei_init(void)
+{
+ return mei_cl_bus_init();
+}
+
+static void __exit mei_exit(void)
+{
+ mei_cl_bus_exit();
+}
+
+module_init(mei_init);
+module_exit(mei_exit);
+MODULE_AUTHOR("Intel Corporation");
+MODULE_DESCRIPTION("Intel(R) Management Engine Interface");
MODULE_LICENSE("GPL v2");
#include <linux/watchdog.h>
#include <linux/poll.h>
#include <linux/mei.h>
+#include <linux/mei_cl_bus.h>
#include "hw.h"
#include "hw-me-regs.h"
MEI_DEV_ENABLED,
MEI_DEV_RESETING,
MEI_DEV_DISABLED,
- MEI_DEV_RECOVERING_FROM_RESET,
MEI_DEV_POWER_DOWN,
MEI_DEV_POWER_UP
};
enum mei_file_transaction_states writing_state;
int sm_state;
struct mei_cl_cb *read_cb;
+
+ /* MEI CL bus data */
+ struct mei_cl_device *device;
+ struct list_head device_link;
+ uuid_le device_uuid;
};
/** struct mei_hw_ops
*
- * @host_set_ready - notify FW that host side is ready
* @host_is_ready - query for host readiness
* @hw_is_ready - query if hw is ready
* @hw_reset - reset hw
+ * @hw_start - start hw after reset
* @hw_config - configure hw
* @intr_clear - clear pending interrupts
*/
struct mei_hw_ops {
- void (*host_set_ready) (struct mei_device *dev);
bool (*host_is_ready) (struct mei_device *dev);
bool (*hw_is_ready) (struct mei_device *dev);
void (*hw_reset) (struct mei_device *dev, bool enable);
+ int (*hw_start) (struct mei_device *dev);
void (*hw_config) (struct mei_device *dev);
void (*intr_clear) (struct mei_device *dev);
unsigned char *buf, unsigned long len);
};
+/* MEI bus API*/
+struct mei_cl_device *mei_cl_add_device(struct mei_device *dev,
+ uuid_le uuid, char *name);
+void mei_cl_remove_device(struct mei_cl_device *device);
+
+int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length);
+int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length);
+int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length);
+
+/**
+ * struct mei_cl_transport_ops - MEI CL device transport ops
+ * This structure allows ME host clients to implement technology
+ * specific transport layers.
+ *
+ * @send: Tx hook for the device. This allows ME host clients to trap
+ * the device driver buffers before actually physically
+ * pushing it to the ME.
+ * @recv: Rx hook for the device. This allows ME host clients to trap the
+ * ME buffers before forwarding them to the device driver.
+ */
+struct mei_cl_transport_ops {
+ int (*send)(struct mei_cl_device *device, u8 *buf, size_t length);
+ int (*recv)(struct mei_cl_device *device, u8 *buf, size_t length);
+};
+
+void mei_cl_bus_rx_event(struct mei_cl *cl);
+int mei_cl_bus_init(void);
+void mei_cl_bus_exit(void);
+
+
+/**
+ * struct mei_cl_device - MEI device handle
+ * An mei_cl_device pointer is returned from mei_add_device()
+ * and links MEI bus clients to their actual ME host client pointer.
+ * Drivers for MEI devices will get an mei_cl_device pointer
+ * when being probed and shall use it for doing ME bus I/O.
+ *
+ * @dev: linux driver model device pointer
+ * @uuid: me client uuid
+ * @cl: mei client
+ * @ops: ME transport ops
+ * @event_cb: Drivers register this callback to get asynchronous ME
+ * events (e.g. Rx buffer pending) notifications.
+ * @events: Events bitmask sent to the driver.
+ * @priv_data: client private data
+ */
+struct mei_cl_device {
+ struct device dev;
+
+ struct mei_cl *cl;
+
+ const struct mei_cl_transport_ops *ops;
+
+ struct work_struct event_work;
+ mei_cl_event_cb_t event_cb;
+ void *event_context;
+ unsigned long events;
+
+ void *priv_data;
+};
+
/**
* struct mei_device - MEI private device struct
*/
struct mutex device_lock; /* device lock */
struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */
+
+ bool recvd_hw_ready;
bool recvd_msg;
/*
* waiting queue for receive message from FW
*/
+ wait_queue_head_t wait_hw_ready;
wait_queue_head_t wait_recvd_msg;
wait_queue_head_t wait_stop_wd;
struct work_struct init_work;
+ /* List of bus devices */
+ struct list_head device_list;
+
+#if IS_ENABLED(CONFIG_DEBUG_FS)
+ struct dentry *dbgfs_dir;
+#endif /* CONFIG_DEBUG_FS */
+
+
const struct mei_hw_ops *ops;
char hw[0] __aligned(sizeof(void *));
};
return msecs_to_jiffies(sec * MSEC_PER_SEC);
}
+/**
+ * mei_data2slots - get slots - number of (dwords) from a message length
+ * + size of the mei header
+ * @length - size of the messages in bytes
+ * returns - number of slots
+ */
+static inline u32 mei_data2slots(size_t length)
+{
+ return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4);
+}
/*
* mei init function prototypes
*/
void mei_device_init(struct mei_device *dev);
void mei_reset(struct mei_device *dev, int interrupts);
-int mei_hw_init(struct mei_device *dev);
+int mei_start(struct mei_device *dev);
void mei_stop(struct mei_device *dev);
/*
struct mei_cl_cb *cmpl_list, s32 *slots);
int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list);
-
-void mei_irq_complete_handler(struct mei_cl *cl, struct mei_cl_cb *cb_pos);
+void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list);
/*
* AMTHIF - AMT Host Interface Functions
dev->ops->hw_reset(dev, enable);
}
+static inline void mei_hw_start(struct mei_device *dev)
+{
+ dev->ops->hw_start(dev);
+}
+
static inline void mei_clear_interrupts(struct mei_device *dev)
{
dev->ops->intr_clear(dev);
dev->ops->intr_disable(dev);
}
-static inline void mei_host_set_ready(struct mei_device *dev)
-{
- dev->ops->host_set_ready(dev);
-}
static inline bool mei_host_is_ready(struct mei_device *dev)
{
return dev->ops->host_is_ready(dev);
return dev->ops->rdbuf_full_slots(dev);
}
-int mei_register(struct device *dev);
-void mei_deregister(void);
+#if IS_ENABLED(CONFIG_DEBUG_FS)
+int mei_dbgfs_register(struct mei_device *dev, const char *name);
+void mei_dbgfs_deregister(struct mei_device *dev);
+#else
+static inline int mei_dbgfs_register(struct mei_device *dev, const char *name)
+{
+ return 0;
+}
+static inline void mei_dbgfs_deregister(struct mei_device *dev) {}
+#endif /* CONFIG_DEBUG_FS */
+
+int mei_register(struct mei_device *dev);
+void mei_deregister(struct mei_device *dev);
#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d comp=%1d"
#define MEI_HDR_PRM(hdr) \
static struct pci_dev *mei_pdev;
/* mei_pci_tbl - PCI Device ID Table */
-static DEFINE_PCI_DEVICE_TABLE(mei_pci_tbl) = {
+static DEFINE_PCI_DEVICE_TABLE(mei_me_pci_tbl) = {
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82946GZ)},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G35)},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82Q965)},
{0, }
};
-MODULE_DEVICE_TABLE(pci, mei_pci_tbl);
+MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl);
static DEFINE_MUTEX(mei_mutex);
*
* returns true if ME Interface is valid, false otherwise
*/
-static bool mei_quirk_probe(struct pci_dev *pdev,
+static bool mei_me_quirk_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
u32 reg;
*
* returns 0 on success, <0 on failure.
*/
-static int mei_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct mei_device *dev;
struct mei_me_hw *hw;
mutex_lock(&mei_mutex);
- if (!mei_quirk_probe(pdev, ent)) {
+ if (!mei_me_quirk_probe(pdev, ent)) {
err = -ENODEV;
goto end;
}
goto disable_msi;
}
- if (mei_hw_init(dev)) {
+ if (mei_start(dev)) {
dev_err(&pdev->dev, "init hw failure.\n");
err = -ENODEV;
goto release_irq;
}
- err = mei_register(&pdev->dev);
+ err = mei_register(dev);
if (err)
goto release_irq;
mei_pdev = pdev;
pci_set_drvdata(pdev, dev);
-
schedule_delayed_work(&dev->timer_work, HZ);
mutex_unlock(&mei_mutex);
* mei_remove is called by the PCI subsystem to alert the driver
* that it should release a PCI device.
*/
-static void mei_remove(struct pci_dev *pdev)
+static void mei_me_remove(struct pci_dev *pdev)
{
struct mei_device *dev;
struct mei_me_hw *hw;
mei_pdev = NULL;
- mei_watchdog_unregister(dev);
-
/* disable interrupts */
mei_disable_interrupts(dev);
if (hw->mem_addr)
pci_iounmap(pdev, hw->mem_addr);
+ mei_deregister(dev);
+
kfree(dev);
pci_release_regions(pdev);
pci_disable_device(pdev);
- mei_deregister();
}
#ifdef CONFIG_PM
-static int mei_pci_suspend(struct device *device)
+static int mei_me_pci_suspend(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct mei_device *dev = pci_get_drvdata(pdev);
return 0;
}
-static int mei_pci_resume(struct device *device)
+static int mei_me_pci_resume(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct mei_device *dev;
return err;
}
-static SIMPLE_DEV_PM_OPS(mei_pm_ops, mei_pci_suspend, mei_pci_resume);
-#define MEI_PM_OPS (&mei_pm_ops)
+static SIMPLE_DEV_PM_OPS(mei_me_pm_ops, mei_me_pci_suspend, mei_me_pci_resume);
+#define MEI_ME_PM_OPS (&mei_me_pm_ops)
#else
-#define MEI_PM_OPS NULL
+#define MEI_ME_PM_OPS NULL
#endif /* CONFIG_PM */
/*
* PCI driver structure
*/
-static struct pci_driver mei_driver = {
+static struct pci_driver mei_me_driver = {
.name = KBUILD_MODNAME,
- .id_table = mei_pci_tbl,
- .probe = mei_probe,
- .remove = mei_remove,
- .shutdown = mei_remove,
- .driver.pm = MEI_PM_OPS,
+ .id_table = mei_me_pci_tbl,
+ .probe = mei_me_probe,
+ .remove = mei_me_remove,
+ .shutdown = mei_me_remove,
+ .driver.pm = MEI_ME_PM_OPS,
};
-module_pci_driver(mei_driver);
+module_pci_driver(mei_me_driver);
MODULE_AUTHOR("Intel Corporation");
MODULE_DESCRIPTION("Intel(R) Management Engine Interface");
config VMWARE_VMCI
tristate "VMware VMCI Driver"
- depends on X86 && PCI
+ depends on X86 && PCI && NET
help
This is VMware's Virtual Machine Communication Interface. It enables
high-speed communication between host and guest in a virtual
.suspend = sdricoh_pcmcia_suspend,
.resume = sdricoh_pcmcia_resume,
};
-
-/*****************************************************************************\
- * *
- * Driver init/exit *
- * *
-\*****************************************************************************/
-
-static int __init sdricoh_drv_init(void)
-{
- return pcmcia_register_driver(&sdricoh_driver);
-}
-
-static void __exit sdricoh_drv_exit(void)
-{
- pcmcia_unregister_driver(&sdricoh_driver);
-}
-
-module_init(sdricoh_drv_init);
-module_exit(sdricoh_drv_exit);
+module_pcmcia_driver(sdricoh_driver);
module_param(switchlocked, uint, 0444);
.suspend = com20020_suspend,
.resume = com20020_resume,
};
-
-static int __init init_com20020_cs(void)
-{
- return pcmcia_register_driver(&com20020_cs_driver);
-}
-
-static void __exit exit_com20020_cs(void)
-{
- pcmcia_unregister_driver(&com20020_cs_driver);
-}
-
-module_init(init_com20020_cs);
-module_exit(exit_com20020_cs);
+module_pcmcia_driver(com20020_cs_driver);
.remove = ems_pcmcia_remove,
.id_table = ems_pcmcia_tbl,
};
-
-static int __init ems_pcmcia_init(void)
-{
- return pcmcia_register_driver(&ems_pcmcia_driver);
-}
-module_init(ems_pcmcia_init);
-
-static void __exit ems_pcmcia_exit(void)
-{
- pcmcia_unregister_driver(&ems_pcmcia_driver);
-}
-module_exit(ems_pcmcia_exit);
+module_pcmcia_driver(ems_pcmcia_driver);
.remove = pcan_remove,
.id_table = pcan_table,
};
-
-static int __init pcan_init(void)
-{
- return pcmcia_register_driver(&pcan_driver);
-}
-module_init(pcan_init);
-
-static void __exit pcan_exit(void)
-{
- pcmcia_unregister_driver(&pcan_driver);
-}
-module_exit(pcan_exit);
+module_pcmcia_driver(pcan_driver);
#include "softing_platform.h"
static int softingcs_index;
-static spinlock_t softingcs_index_lock;
+static DEFINE_SPINLOCK(softingcs_index_lock);
static int softingcs_reset(struct platform_device *pdev, int v);
static int softingcs_enable_irq(struct platform_device *pdev, int v);
.remove = softingcs_remove,
};
-static int __init softingcs_start(void)
-{
- spin_lock_init(&softingcs_index_lock);
- return pcmcia_register_driver(&softingcs_driver);
-}
-
-static void __exit softingcs_stop(void)
-{
- pcmcia_unregister_driver(&softingcs_driver);
-}
-
-module_init(softingcs_start);
-module_exit(softingcs_stop);
+module_pcmcia_driver(softingcs_driver);
MODULE_DESCRIPTION("softing CANcard driver"
", links PCMCIA card to softing driver");
.suspend = tc574_suspend,
.resume = tc574_resume,
};
-
-static int __init init_tc574(void)
-{
- return pcmcia_register_driver(&tc574_driver);
-}
-
-static void __exit exit_tc574(void)
-{
- pcmcia_unregister_driver(&tc574_driver);
-}
-
-module_init(init_tc574);
-module_exit(exit_tc574);
+module_pcmcia_driver(tc574_driver);
.suspend = tc589_suspend,
.resume = tc589_resume,
};
-
-static int __init init_tc589(void)
-{
- return pcmcia_register_driver(&tc589_driver);
-}
-
-static void __exit exit_tc589(void)
-{
- pcmcia_unregister_driver(&tc589_driver);
-}
-
-module_init(init_tc589);
-module_exit(exit_tc589);
+module_pcmcia_driver(tc589_driver);
.suspend = axnet_suspend,
.resume = axnet_resume,
};
-
-static int __init init_axnet_cs(void)
-{
- return pcmcia_register_driver(&axnet_cs_driver);
-}
-
-static void __exit exit_axnet_cs(void)
-{
- pcmcia_unregister_driver(&axnet_cs_driver);
-}
-
-module_init(init_axnet_cs);
-module_exit(exit_axnet_cs);
+module_pcmcia_driver(axnet_cs_driver);
/*====================================================================*/
.suspend = pcnet_suspend,
.resume = pcnet_resume,
};
-
-static int __init init_pcnet_cs(void)
-{
- return pcmcia_register_driver(&pcnet_driver);
-}
-
-static void __exit exit_pcnet_cs(void)
-{
- pcmcia_unregister_driver(&pcnet_driver);
-}
-
-module_init(init_pcnet_cs);
-module_exit(exit_pcnet_cs);
+module_pcmcia_driver(pcnet_driver);
.suspend = nmclan_suspend,
.resume = nmclan_resume,
};
-
-static int __init init_nmclan_cs(void)
-{
- return pcmcia_register_driver(&nmclan_cs_driver);
-}
-
-static void __exit exit_nmclan_cs(void)
-{
- pcmcia_unregister_driver(&nmclan_cs_driver);
-}
-
-module_init(init_nmclan_cs);
-module_exit(exit_nmclan_cs);
+module_pcmcia_driver(nmclan_cs_driver);
.suspend = fmvj18x_suspend,
.resume = fmvj18x_resume,
};
-
-static int __init init_fmvj18x_cs(void)
-{
- return pcmcia_register_driver(&fmvj18x_cs_driver);
-}
-
-static void __exit exit_fmvj18x_cs(void)
-{
- pcmcia_unregister_driver(&fmvj18x_cs_driver);
-}
-
-module_init(init_fmvj18x_cs);
-module_exit(exit_fmvj18x_cs);
+module_pcmcia_driver(fmvj18x_cs_driver);
/*====================================================================*/
.suspend = smc91c92_suspend,
.resume = smc91c92_resume,
};
-
-static int __init init_smc91c92_cs(void)
-{
- return pcmcia_register_driver(&smc91c92_cs_driver);
-}
-
-static void __exit exit_smc91c92_cs(void)
-{
- pcmcia_unregister_driver(&smc91c92_cs_driver);
-}
-
-module_init(init_smc91c92_cs);
-module_exit(exit_smc91c92_cs);
+module_pcmcia_driver(smc91c92_cs_driver);
.suspend = xirc2ps_suspend,
.resume = xirc2ps_resume,
};
-
-static int __init
-init_xirc2ps_cs(void)
-{
- return pcmcia_register_driver(&xirc2ps_cs_driver);
-}
-
-static void __exit
-exit_xirc2ps_cs(void)
-{
- pcmcia_unregister_driver(&xirc2ps_cs_driver);
-}
-
-module_init(init_xirc2ps_cs);
-module_exit(exit_xirc2ps_cs);
+module_pcmcia_driver(xirc2ps_cs_driver);
#ifndef MODULE
static int __init setup_xirc2ps_cs(char *str)
.suspend = airo_suspend,
.resume = airo_resume,
};
-
-static int __init airo_cs_init(void)
-{
- return pcmcia_register_driver(&airo_driver);
-}
-
-static void __exit airo_cs_cleanup(void)
-{
- pcmcia_unregister_driver(&airo_driver);
-}
+module_pcmcia_driver(airo_driver);
/*
This program is free software; you can redistribute it and/or
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
-
-module_init(airo_cs_init);
-module_exit(airo_cs_cleanup);
.suspend = atmel_suspend,
.resume = atmel_resume,
};
-
-static int __init atmel_cs_init(void)
-{
- return pcmcia_register_driver(&atmel_driver);
-}
-
-static void __exit atmel_cs_cleanup(void)
-{
- pcmcia_unregister_driver(&atmel_driver);
-}
+module_pcmcia_driver(atmel_driver);
/*
This program is free software; you can redistribute it and/or
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
-
-module_init(atmel_cs_init);
-module_exit(atmel_cs_cleanup);
.resume = b43_pcmcia_resume,
};
+/*
+ * These are not module init/exit functions!
+ * The module_pcmcia_driver() helper cannot be used here.
+ */
int b43_pcmcia_init(void)
{
return pcmcia_register_driver(&b43_pcmcia_driver);
.suspend = hostap_cs_suspend,
.resume = hostap_cs_resume,
};
-
-static int __init init_prism2_pccard(void)
-{
- return pcmcia_register_driver(&hostap_driver);
-}
-
-static void __exit exit_prism2_pccard(void)
-{
- pcmcia_unregister_driver(&hostap_driver);
-}
-
-
-module_init(init_prism2_pccard);
-module_exit(exit_prism2_pccard);
+module_pcmcia_driver(hostap_driver);
};
MODULE_DEVICE_TABLE(pcmcia, if_cs_ids);
-
static struct pcmcia_driver lbs_driver = {
.owner = THIS_MODULE,
.name = DRV_NAME,
.remove = if_cs_detach,
.id_table = if_cs_ids,
};
-
-
-static int __init if_cs_init(void)
-{
- int ret;
-
- lbs_deb_enter(LBS_DEB_CS);
- ret = pcmcia_register_driver(&lbs_driver);
- lbs_deb_leave(LBS_DEB_CS);
- return ret;
-}
-
-
-static void __exit if_cs_exit(void)
-{
- lbs_deb_enter(LBS_DEB_CS);
- pcmcia_unregister_driver(&lbs_driver);
- lbs_deb_leave(LBS_DEB_CS);
-}
-
-
-module_init(if_cs_init);
-module_exit(if_cs_exit);
+module_pcmcia_driver(lbs_driver);
.suspend = orinoco_cs_suspend,
.resume = orinoco_cs_resume,
};
-
-static int __init
-init_orinoco_cs(void)
-{
- return pcmcia_register_driver(&orinoco_driver);
-}
-
-static void __exit
-exit_orinoco_cs(void)
-{
- pcmcia_unregister_driver(&orinoco_driver);
-}
-
-module_init(init_orinoco_cs);
-module_exit(exit_orinoco_cs);
+module_pcmcia_driver(orinoco_driver);
.resume = spectrum_cs_resume,
.id_table = spectrum_cs_ids,
};
-
-static int __init
-init_spectrum_cs(void)
-{
- return pcmcia_register_driver(&orinoco_driver);
-}
-
-static void __exit
-exit_spectrum_cs(void)
-{
- pcmcia_unregister_driver(&orinoco_driver);
-}
-
-module_init(init_spectrum_cs);
-module_exit(exit_spectrum_cs);
+module_pcmcia_driver(orinoco_driver);
.suspend = wl3501_suspend,
.resume = wl3501_resume,
};
-
-static int __init wl3501_init_module(void)
-{
- return pcmcia_register_driver(&wl3501_driver);
-}
-
-static void __exit wl3501_exit_module(void)
-{
- pcmcia_unregister_driver(&wl3501_driver);
-}
-
-module_init(wl3501_init_module);
-module_exit(wl3501_exit_module);
+module_pcmcia_driver(wl3501_driver);
MODULE_AUTHOR("Fox Chen <mhchen@golf.ccl.itri.org.tw>, "
"Arnaldo Carvalho de Melo <acme@conectiva.com.br>,"
},
};
-static int __init amiga_parallel_init(void)
-{
- return platform_driver_probe(&amiga_parallel_driver,
- amiga_parallel_probe);
-}
-
-module_init(amiga_parallel_init);
-
-static void __exit amiga_parallel_exit(void)
-{
- platform_driver_unregister(&amiga_parallel_driver);
-}
-
-module_exit(amiga_parallel_exit);
+module_platform_driver_probe(amiga_parallel_driver, amiga_parallel_probe);
MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
MODULE_DESCRIPTION("Parport Driver for Amiga builtin Port");
.remove = parport_detach,
.id_table = parport_ids,
};
-
-static int __init init_parport_cs(void)
-{
- return pcmcia_register_driver(&parport_cs_driver);
-}
-
-static void __exit exit_parport_cs(void)
-{
- pcmcia_unregister_driver(&parport_cs_driver);
-}
-
-module_init(init_parport_cs);
-module_exit(exit_parport_cs);
+module_pcmcia_driver(parport_cs_driver);
printk (KERN_DEBUG "parport (0x%lx): no memory!\n", base);
return NULL;
}
- ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL);
+ ops = kmemdup(&parport_gsc_ops, sizeof(struct parport_operations),
+ GFP_KERNEL);
if (!ops) {
printk (KERN_DEBUG "parport (0x%lx): no memory for ops!\n",
base);
kfree (priv);
return NULL;
}
- memcpy (ops, &parport_gsc_ops, sizeof (struct parport_operations));
priv->ctr = 0xc;
priv->ctr_writable = 0xff;
priv->dma_buf = 0;
size = resource_size(&op->resource[0]);
dma = PARPORT_DMA_NONE;
- ops = kmalloc(sizeof(struct parport_operations), GFP_KERNEL);
+ ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations),
+ GFP_KERNEL);
if (!ops)
goto out_unmap;
- memcpy (ops, &parport_sunbpp_ops, sizeof(struct parport_operations));
-
dprintk(("register_port\n"));
if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
goto out_free_ops;
struct parport_sysctl_table *t;
int i;
- t = kmalloc(sizeof(*t), GFP_KERNEL);
+ t = kmemdup(&parport_sysctl_template, sizeof(*t), GFP_KERNEL);
if (t == NULL)
return -ENOMEM;
- memcpy(t, &parport_sysctl_template, sizeof(*t));
t->device_dir[0].extra1 = port;
struct parport_device_sysctl_table *t;
struct parport * port = device->port;
- t = kmalloc(sizeof(*t), GFP_KERNEL);
+ t = kmemdup(&parport_device_sysctl_template, sizeof(*t), GFP_KERNEL);
if (t == NULL)
return -ENOMEM;
- memcpy(t, &parport_device_sysctl_template, sizeof(*t));
t->dev_dir[0].child = t->parport_dir;
t->parport_dir[0].child = t->port_dir;
.id_table = aha152x_ids,
.resume = aha152x_resume,
};
-
-static int __init init_aha152x_cs(void)
-{
- return pcmcia_register_driver(&aha152x_cs_driver);
-}
-
-static void __exit exit_aha152x_cs(void)
-{
- pcmcia_unregister_driver(&aha152x_cs_driver);
-}
-
-module_init(init_aha152x_cs);
-module_exit(exit_aha152x_cs);
+module_pcmcia_driver(aha152x_cs_driver);
.id_table = fdomain_ids,
.resume = fdomain_resume,
};
-
-static int __init init_fdomain_cs(void)
-{
- return pcmcia_register_driver(&fdomain_cs_driver);
-}
-
-static void __exit exit_fdomain_cs(void)
-{
- pcmcia_unregister_driver(&fdomain_cs_driver);
-}
-
-module_init(init_fdomain_cs);
-module_exit(exit_fdomain_cs);
+module_pcmcia_driver(fdomain_cs_driver);
.suspend = nsp_cs_suspend,
.resume = nsp_cs_resume,
};
-
-static int __init nsp_cs_init(void)
-{
- return pcmcia_register_driver(&nsp_driver);
-}
-
-static void __exit nsp_cs_exit(void)
-{
- pcmcia_unregister_driver(&nsp_driver);
-}
-
-
-module_init(nsp_cs_init)
-module_exit(nsp_cs_exit)
-
-/* end */
+module_pcmcia_driver(nsp_driver);
.id_table = qlogic_ids,
.resume = qlogic_resume,
};
-
-static int __init init_qlogic_cs(void)
-{
- return pcmcia_register_driver(&qlogic_cs_driver);
-}
-
-static void __exit exit_qlogic_cs(void)
-{
- pcmcia_unregister_driver(&qlogic_cs_driver);
-}
+module_pcmcia_driver(qlogic_cs_driver);
MODULE_AUTHOR("Tom Zerucha, Michael Griffith");
MODULE_DESCRIPTION("Driver for the PCMCIA Qlogic FAS SCSI controllers");
MODULE_LICENSE("GPL");
-module_init(init_qlogic_cs);
-module_exit(exit_qlogic_cs);
.id_table = sym53c500_ids,
.resume = sym53c500_resume,
};
-
-static int __init
-init_sym53c500_cs(void)
-{
- return pcmcia_register_driver(&sym53c500_cs_driver);
-}
-
-static void __exit
-exit_sym53c500_cs(void)
-{
- pcmcia_unregister_driver(&sym53c500_cs_driver);
-}
-
-module_init(init_sym53c500_cs);
-module_exit(exit_sym53c500_cs);
+module_pcmcia_driver(sym53c500_cs_driver);
--- /dev/null
+#
+# SSBI bus support
+#
+
+menu "Qualcomm MSM SSBI bus support"
+
+config SSBI
+ tristate "Qualcomm Single-wire Serial Bus Interface (SSBI)"
+ help
+ If you say yes to this option, support will be included for the
+ built-in SSBI interface on Qualcomm MSM family processors.
+
+ This is required for communicating with Qualcomm PMICs and
+ other devices that have the SSBI interface.
+
+endmenu
--- /dev/null
+obj-$(CONFIG_SSBI) += ssbi.o
--- /dev/null
+/* Copyright (c) 2009-2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010, Google Inc.
+ *
+ * Original authors: Code Aurora Forum
+ *
+ * Author: Dima Zavin <dima@android.com>
+ * - Largely rewritten from original to not be an i2c driver.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/ssbi.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+/* SSBI 2.0 controller registers */
+#define SSBI2_CMD 0x0008
+#define SSBI2_RD 0x0010
+#define SSBI2_STATUS 0x0014
+#define SSBI2_MODE2 0x001C
+
+/* SSBI_CMD fields */
+#define SSBI_CMD_RDWRN (1 << 24)
+
+/* SSBI_STATUS fields */
+#define SSBI_STATUS_RD_READY (1 << 2)
+#define SSBI_STATUS_READY (1 << 1)
+#define SSBI_STATUS_MCHN_BUSY (1 << 0)
+
+/* SSBI_MODE2 fields */
+#define SSBI_MODE2_REG_ADDR_15_8_SHFT 0x04
+#define SSBI_MODE2_REG_ADDR_15_8_MASK (0x7f << SSBI_MODE2_REG_ADDR_15_8_SHFT)
+
+#define SET_SSBI_MODE2_REG_ADDR_15_8(MD, AD) \
+ (((MD) & 0x0F) | ((((AD) >> 8) << SSBI_MODE2_REG_ADDR_15_8_SHFT) & \
+ SSBI_MODE2_REG_ADDR_15_8_MASK))
+
+/* SSBI PMIC Arbiter command registers */
+#define SSBI_PA_CMD 0x0000
+#define SSBI_PA_RD_STATUS 0x0004
+
+/* SSBI_PA_CMD fields */
+#define SSBI_PA_CMD_RDWRN (1 << 24)
+#define SSBI_PA_CMD_ADDR_MASK 0x7fff /* REG_ADDR_7_0, REG_ADDR_8_14*/
+
+/* SSBI_PA_RD_STATUS fields */
+#define SSBI_PA_RD_STATUS_TRANS_DONE (1 << 27)
+#define SSBI_PA_RD_STATUS_TRANS_DENIED (1 << 26)
+
+#define SSBI_TIMEOUT_US 100
+
+struct ssbi {
+ struct device *slave;
+ void __iomem *base;
+ spinlock_t lock;
+ enum ssbi_controller_type controller_type;
+ int (*read)(struct ssbi *, u16 addr, u8 *buf, int len);
+ int (*write)(struct ssbi *, u16 addr, u8 *buf, int len);
+};
+
+#define to_ssbi(dev) platform_get_drvdata(to_platform_device(dev))
+
+static inline u32 ssbi_readl(struct ssbi *ssbi, u32 reg)
+{
+ return readl(ssbi->base + reg);
+}
+
+static inline void ssbi_writel(struct ssbi *ssbi, u32 val, u32 reg)
+{
+ writel(val, ssbi->base + reg);
+}
+
+/*
+ * Via private exchange with one of the original authors, the hardware
+ * should generally finish a transaction in about 5us. The worst
+ * case, is when using the arbiter and both other CPUs have just
+ * started trying to use the SSBI bus will result in a time of about
+ * 20us. It should never take longer than this.
+ *
+ * As such, this wait merely spins, with a udelay.
+ */
+static int ssbi_wait_mask(struct ssbi *ssbi, u32 set_mask, u32 clr_mask)
+{
+ u32 timeout = SSBI_TIMEOUT_US;
+ u32 val;
+
+ while (timeout--) {
+ val = ssbi_readl(ssbi, SSBI2_STATUS);
+ if (((val & set_mask) == set_mask) && ((val & clr_mask) == 0))
+ return 0;
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int
+ssbi_read_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len)
+{
+ u32 cmd = SSBI_CMD_RDWRN | ((addr & 0xff) << 16);
+ int ret = 0;
+
+ if (ssbi->controller_type == MSM_SBI_CTRL_SSBI2) {
+ u32 mode2 = ssbi_readl(ssbi, SSBI2_MODE2);
+ mode2 = SET_SSBI_MODE2_REG_ADDR_15_8(mode2, addr);
+ ssbi_writel(ssbi, mode2, SSBI2_MODE2);
+ }
+
+ while (len) {
+ ret = ssbi_wait_mask(ssbi, SSBI_STATUS_READY, 0);
+ if (ret)
+ goto err;
+
+ ssbi_writel(ssbi, cmd, SSBI2_CMD);
+ ret = ssbi_wait_mask(ssbi, SSBI_STATUS_RD_READY, 0);
+ if (ret)
+ goto err;
+ *buf++ = ssbi_readl(ssbi, SSBI2_RD) & 0xff;
+ len--;
+ }
+
+err:
+ return ret;
+}
+
+static int
+ssbi_write_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len)
+{
+ int ret = 0;
+
+ if (ssbi->controller_type == MSM_SBI_CTRL_SSBI2) {
+ u32 mode2 = ssbi_readl(ssbi, SSBI2_MODE2);
+ mode2 = SET_SSBI_MODE2_REG_ADDR_15_8(mode2, addr);
+ ssbi_writel(ssbi, mode2, SSBI2_MODE2);
+ }
+
+ while (len) {
+ ret = ssbi_wait_mask(ssbi, SSBI_STATUS_READY, 0);
+ if (ret)
+ goto err;
+
+ ssbi_writel(ssbi, ((addr & 0xff) << 16) | *buf, SSBI2_CMD);
+ ret = ssbi_wait_mask(ssbi, 0, SSBI_STATUS_MCHN_BUSY);
+ if (ret)
+ goto err;
+ buf++;
+ len--;
+ }
+
+err:
+ return ret;
+}
+
+/*
+ * See ssbi_wait_mask for an explanation of the time and the
+ * busywait.
+ */
+static inline int
+ssbi_pa_transfer(struct ssbi *ssbi, u32 cmd, u8 *data)
+{
+ u32 timeout = SSBI_TIMEOUT_US;
+ u32 rd_status = 0;
+
+ ssbi_writel(ssbi, cmd, SSBI_PA_CMD);
+
+ while (timeout--) {
+ rd_status = ssbi_readl(ssbi, SSBI_PA_RD_STATUS);
+
+ if (rd_status & SSBI_PA_RD_STATUS_TRANS_DENIED)
+ return -EPERM;
+
+ if (rd_status & SSBI_PA_RD_STATUS_TRANS_DONE) {
+ if (data)
+ *data = rd_status & 0xff;
+ return 0;
+ }
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int
+ssbi_pa_read_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len)
+{
+ u32 cmd;
+ int ret = 0;
+
+ cmd = SSBI_PA_CMD_RDWRN | (addr & SSBI_PA_CMD_ADDR_MASK) << 8;
+
+ while (len) {
+ ret = ssbi_pa_transfer(ssbi, cmd, buf);
+ if (ret)
+ goto err;
+ buf++;
+ len--;
+ }
+
+err:
+ return ret;
+}
+
+static int
+ssbi_pa_write_bytes(struct ssbi *ssbi, u16 addr, u8 *buf, int len)
+{
+ u32 cmd;
+ int ret = 0;
+
+ while (len) {
+ cmd = (addr & SSBI_PA_CMD_ADDR_MASK) << 8 | *buf;
+ ret = ssbi_pa_transfer(ssbi, cmd, NULL);
+ if (ret)
+ goto err;
+ buf++;
+ len--;
+ }
+
+err:
+ return ret;
+}
+
+int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len)
+{
+ struct ssbi *ssbi = to_ssbi(dev);
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&ssbi->lock, flags);
+ ret = ssbi->read(ssbi, addr, buf, len);
+ spin_unlock_irqrestore(&ssbi->lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ssbi_read);
+
+int ssbi_write(struct device *dev, u16 addr, u8 *buf, int len)
+{
+ struct ssbi *ssbi = to_ssbi(dev);
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&ssbi->lock, flags);
+ ret = ssbi->write(ssbi, addr, buf, len);
+ spin_unlock_irqrestore(&ssbi->lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ssbi_write);
+
+static int ssbi_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct resource *mem_res;
+ struct ssbi *ssbi;
+ int ret = 0;
+ const char *type;
+
+ ssbi = kzalloc(sizeof(struct ssbi), GFP_KERNEL);
+ if (!ssbi) {
+ pr_err("can not allocate ssbi_data\n");
+ return -ENOMEM;
+ }
+
+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem_res) {
+ pr_err("missing mem resource\n");
+ ret = -EINVAL;
+ goto err_get_mem_res;
+ }
+
+ ssbi->base = ioremap(mem_res->start, resource_size(mem_res));
+ if (!ssbi->base) {
+ pr_err("ioremap of 0x%p failed\n", (void *)mem_res->start);
+ ret = -EINVAL;
+ goto err_ioremap;
+ }
+ platform_set_drvdata(pdev, ssbi);
+
+ type = of_get_property(np, "qcom,controller-type", NULL);
+ if (type == NULL) {
+ pr_err("Missing qcom,controller-type property\n");
+ ret = -EINVAL;
+ goto err_ssbi_controller;
+ }
+ dev_info(&pdev->dev, "SSBI controller type: '%s'\n", type);
+ if (strcmp(type, "ssbi") == 0)
+ ssbi->controller_type = MSM_SBI_CTRL_SSBI;
+ else if (strcmp(type, "ssbi2") == 0)
+ ssbi->controller_type = MSM_SBI_CTRL_SSBI2;
+ else if (strcmp(type, "pmic-arbiter") == 0)
+ ssbi->controller_type = MSM_SBI_CTRL_PMIC_ARBITER;
+ else {
+ pr_err("Unknown qcom,controller-type\n");
+ ret = -EINVAL;
+ goto err_ssbi_controller;
+ }
+
+ if (ssbi->controller_type == MSM_SBI_CTRL_PMIC_ARBITER) {
+ ssbi->read = ssbi_pa_read_bytes;
+ ssbi->write = ssbi_pa_write_bytes;
+ } else {
+ ssbi->read = ssbi_read_bytes;
+ ssbi->write = ssbi_write_bytes;
+ }
+
+ spin_lock_init(&ssbi->lock);
+
+ ret = of_platform_populate(np, NULL, NULL, &pdev->dev);
+ if (ret)
+ goto err_ssbi_controller;
+
+ return 0;
+
+err_ssbi_controller:
+ platform_set_drvdata(pdev, NULL);
+ iounmap(ssbi->base);
+err_ioremap:
+err_get_mem_res:
+ kfree(ssbi);
+ return ret;
+}
+
+static int ssbi_remove(struct platform_device *pdev)
+{
+ struct ssbi *ssbi = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+ iounmap(ssbi->base);
+ kfree(ssbi);
+ return 0;
+}
+
+static struct of_device_id ssbi_match_table[] = {
+ { .compatible = "qcom,ssbi" },
+ {}
+};
+
+static struct platform_driver ssbi_driver = {
+ .probe = ssbi_probe,
+ .remove = ssbi_remove,
+ .driver = {
+ .name = "ssbi",
+ .owner = THIS_MODULE,
+ .of_match_table = ssbi_match_table,
+ },
+};
+
+static int __init ssbi_init(void)
+{
+ return platform_driver_register(&ssbi_driver);
+}
+module_init(ssbi_init);
+
+static void __exit ssbi_exit(void)
+{
+ platform_driver_unregister(&ssbi_driver);
+}
+module_exit(ssbi_exit)
+
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION("1.0");
+MODULE_ALIAS("platform:ssbi");
+MODULE_AUTHOR("Dima Zavin <dima@android.com>");
.suspend = serial_suspend,
.resume = serial_resume,
};
-
-static int __init init_serial_cs(void)
-{
- return pcmcia_register_driver(&serial_cs_driver);
-}
-
-static void __exit exit_serial_cs(void)
-{
- pcmcia_unregister_driver(&serial_cs_driver);
-}
-
-module_init(init_serial_cs);
-module_exit(exit_serial_cs);
+module_pcmcia_driver(serial_cs_driver);
MODULE_LICENSE("GPL");
retval = idr_alloc(&uio_idr, idev, 0, UIO_MAX_DEVICES, GFP_KERNEL);
if (retval >= 0) {
idev->minor = retval;
+ retval = 0;
} else if (retval == -ENOSPC) {
dev_err(idev->dev, "too many uio devices\n");
retval = -EINVAL;
.remove = sl811_cs_detach,
.id_table = sl811_ids,
};
-
-/*====================================================================*/
-
-static int __init init_sl811_cs(void)
-{
- return pcmcia_register_driver(&sl811_cs_driver);
-}
-module_init(init_sl811_cs);
-
-static void __exit exit_sl811_cs(void)
-{
- pcmcia_unregister_driver(&sl811_cs_driver);
-}
-module_exit(exit_sl811_cs);
+module_pcmcia_driver(sl811_cs_driver);
mdev->clkdiv = (clk_get_rate(mdev->clk) / 1000000) - 1;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- mdev->regs = devm_request_and_ioremap(&pdev->dev, res);
- if (!mdev->regs)
- return -EBUSY;
+ mdev->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mdev->regs))
+ return PTR_ERR(mdev->regs);
clk_prepare_enable(mdev->clk);
__raw_writeb(mdev->clkdiv, mdev->regs + MXC_W1_TIME_DIVIDER);
Say Y here if you want to use a 1-wire
DS2408 8-Channel Addressable Switch device support
+config W1_SLAVE_DS2408_READBACK
+ bool "Read-back values written to DS2408's output register"
+ depends on W1_SLAVE_DS2408
+ default y
+ help
+ Enabling this will cause the driver to read back the values written
+ to the chip's output register in order to detect errors.
+
+ This is slower but useful when debugging chips and/or busses.
+
config W1_SLAVE_DS2413
tristate "Dual Channel Addressable Switch 0x3a family support (DS2413)"
help
w1_write_block(sl->master, w1_buf, 3);
readBack = w1_read_8(sl->master);
+
+ if (readBack != W1_F29_SUCCESS_CONFIRM_BYTE) {
+ if (w1_reset_resume_command(sl->master))
+ goto error;
+ /* try again, the slave is ready for a command */
+ continue;
+ }
+
+#ifdef CONFIG_W1_SLAVE_DS2408_READBACK
/* here the master could read another byte which
would be the PIO reg (the actual pin logic state)
since in this driver we don't know which pins are
if (w1_reset_resume_command(sl->master))
goto error;
- if (readBack != 0xAA) {
- /* try again, the slave is ready for a command */
- continue;
- }
-
/* go read back the output latches */
/* (the direct effect of the write above) */
w1_buf[0] = W1_F29_FUNC_READ_PIO_REGS;
w1_buf[2] = 0;
w1_write_block(sl->master, w1_buf, 3);
/* read the result of the READ_PIO_REGS command */
- if (w1_read_8(sl->master) == *buf) {
+ if (w1_read_8(sl->master) == *buf)
+#endif
+ {
/* success! */
mutex_unlock(&sl->master->bus_mutex);
dev_dbg(&sl->dev,
-#define NB_SYSFS_BIN_FILES 6
-static struct bin_attribute w1_f29_sysfs_bin_files[NB_SYSFS_BIN_FILES] = {
+static struct bin_attribute w1_f29_sysfs_bin_files[] = {
{
.attr = {
.name = "state",
int err = 0;
int i;
- for (i = 0; i < NB_SYSFS_BIN_FILES && !err; ++i)
+ for (i = 0; i < ARRAY_SIZE(w1_f29_sysfs_bin_files) && !err; ++i)
err = sysfs_create_bin_file(
&sl->dev.kobj,
&(w1_f29_sysfs_bin_files[i]));
static void w1_f29_remove_slave(struct w1_slave *sl)
{
int i;
- for (i = NB_SYSFS_BIN_FILES - 1; i >= 0; --i)
+ for (i = ARRAY_SIZE(w1_f29_sysfs_bin_files) - 1; i >= 0; --i)
sysfs_remove_bin_file(&sl->dev.kobj,
&(w1_f29_sysfs_bin_files[i]));
}
#include <linux/types.h>
+
+/*
+ * Implementation of host controlled snapshot of the guest.
+ */
+
+#define VSS_OP_REGISTER 128
+
+enum hv_vss_op {
+ VSS_OP_CREATE = 0,
+ VSS_OP_DELETE,
+ VSS_OP_HOT_BACKUP,
+ VSS_OP_GET_DM_INFO,
+ VSS_OP_BU_COMPLETE,
+ /*
+ * Following operations are only supported with IC version >= 5.0
+ */
+ VSS_OP_FREEZE, /* Freeze the file systems in the VM */
+ VSS_OP_THAW, /* Unfreeze the file systems */
+ VSS_OP_AUTO_RECOVER,
+ VSS_OP_COUNT /* Number of operations, must be last */
+};
+
+
+/*
+ * Header for all VSS messages.
+ */
+struct hv_vss_hdr {
+ __u8 operation;
+ __u8 reserved[7];
+} __attribute__((packed));
+
+
+/*
+ * Flag values for the hv_vss_check_feature. Linux supports only
+ * one value.
+ */
+#define VSS_HBU_NO_AUTO_RECOVERY 0x00000005
+
+struct hv_vss_check_feature {
+ __u32 flags;
+} __attribute__((packed));
+
+struct hv_vss_check_dm_info {
+ __u32 flags;
+} __attribute__((packed));
+
+struct hv_vss_msg {
+ union {
+ struct hv_vss_hdr vss_hdr;
+ int error;
+ };
+ union {
+ struct hv_vss_check_feature vss_cf;
+ struct hv_vss_check_dm_info dm_info;
+ };
+} __attribute__((packed));
+
/*
* An implementation of HyperV key value pair (KVP) functionality for Linux.
*
0xb9, 0x8b, 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a \
}
+/*
+ * VSS (Backup/Restore) GUID
+ */
+#define HV_VSS_GUID \
+ .guid = { \
+ 0x29, 0x2e, 0xfa, 0x35, 0x23, 0xea, 0x36, 0x42, \
+ 0x96, 0xae, 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40 \
+ }
/*
* Common header for Hyper-V ICs
*/
void hv_kvp_deinit(void);
void hv_kvp_onchannelcallback(void *);
+int hv_vss_init(struct hv_util_service *);
+void hv_vss_deinit(void);
+void hv_vss_onchannelcallback(void *);
+
/*
* Negotiated version with the Host.
*/
void ipack_driver_unregister(struct ipack_driver *edrv);
/**
- * ipack_device_register -- register an IPack device with the kernel
- * @dev: the new device to register.
+ * ipack_device_init -- initialize an IPack device
+ * @dev: the new device to initialize.
*
- * Register a new IPack device ("module" in IndustryPack jargon). The call
- * is done by the carrier driver. The carrier should populate the fields
- * bus and slot as well as the region array of @dev prior to calling this
- * function. The rest of the fields will be allocated and populated
- * during registration.
+ * Initialize a new IPack device ("module" in IndustryPack jargon). The call
+ * is done by the carrier driver. The carrier should populate the fields
+ * bus and slot as well as the region array of @dev prior to calling this
+ * function. The rest of the fields will be allocated and populated
+ * during initalization.
*
- * Return zero on success or error code on failure.
+ * Return zero on success or error code on failure.
+ *
+ * NOTE: _Never_ directly free @dev after calling this function, even
+ * if it returned an error! Always use ipack_put_device() to give up the
+ * reference initialized in this function instead.
+ */
+int ipack_device_init(struct ipack_device *dev);
+
+/**
+ * ipack_device_add -- Add an IPack device
+ * @dev: the new device to add.
+ *
+ * Add a new IPack device. The call is done by the carrier driver
+ * after calling ipack_device_init().
+ *
+ * Return zero on success or error code on failure.
+ *
+ * NOTE: _Never_ directly free @dev after calling this function, even
+ * if it returned an error! Always use ipack_put_device() to give up the
+ * reference initialized in this function instead.
*/
-int ipack_device_register(struct ipack_device *dev);
-void ipack_device_unregister(struct ipack_device *dev);
+int ipack_device_add(struct ipack_device *dev);
+void ipack_device_del(struct ipack_device *dev);
+
+void ipack_get_device(struct ipack_device *dev);
+void ipack_put_device(struct ipack_device *dev);
/**
* DEFINE_IPACK_DEVICE_TABLE - macro used to describe a IndustryPack table
--- /dev/null
+#ifndef _LINUX_MEI_CL_BUS_H
+#define _LINUX_MEI_CL_BUS_H
+
+#include <linux/device.h>
+#include <linux/uuid.h>
+
+struct mei_cl_device;
+
+struct mei_cl_driver {
+ struct device_driver driver;
+ const char *name;
+
+ const struct mei_cl_device_id *id_table;
+
+ int (*probe)(struct mei_cl_device *dev,
+ const struct mei_cl_device_id *id);
+ int (*remove)(struct mei_cl_device *dev);
+};
+
+int __mei_cl_driver_register(struct mei_cl_driver *driver,
+ struct module *owner);
+#define mei_cl_driver_register(driver) \
+ __mei_cl_driver_register(driver, THIS_MODULE)
+
+void mei_cl_driver_unregister(struct mei_cl_driver *driver);
+
+int mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length);
+int mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length);
+
+typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device,
+ u32 events, void *context);
+int mei_cl_register_event_cb(struct mei_cl_device *device,
+ mei_cl_event_cb_t read_cb, void *context);
+
+#define MEI_CL_EVENT_RX 0
+#define MEI_CL_EVENT_TX 1
+
+void *mei_cl_get_drvdata(const struct mei_cl_device *device);
+void mei_cl_set_drvdata(struct mei_cl_device *device, void *data);
+
+#endif /* _LINUX_MEI_CL_BUS_H */
struct regmap_irq_chip_data *aod_irq_chip;
struct regmap_irq_chip_data *irq_chip;
+ bool hpdet_magic;
+ unsigned int hp_ena;
+
struct mutex clk_lock;
int clk32k_ref;
bool gpio;
};
+struct arizona_micd_range {
+ int max; /** Ohms */
+ int key; /** Key to report to input layer */
+};
+
struct arizona_pdata {
int reset; /** GPIO controlling /RESET, if any */
int ldoena; /** GPIO controlling LODENA, if any */
/** GPIO5 is used for jack detection */
bool jd_gpio5;
+ /** Internal pull on GPIO5 is disabled when used for jack detection */
+ bool jd_gpio5_nopull;
+
/** Use the headphone detect circuit to identify the accessory */
bool hpdet_acc_id;
+ /** Check for line output with HPDET method */
+ bool hpdet_acc_id_line;
+
/** GPIO used for mic isolation with HPDET */
int hpdet_id_gpio;
+ /** Extra debounce timeout used during initial mic detection (ms) */
+ int micd_detect_debounce;
+
/** GPIO for mic detection polarity */
int micd_pol_gpio;
/** Mic detect debounce level */
int micd_dbtime;
+ /** Mic detect timeout (ms) */
+ int micd_timeout;
+
/** Force MICBIAS on for mic detect */
bool micd_force_micbias;
+ /** Mic detect level parameters */
+ const struct arizona_micd_range *micd_ranges;
+ int num_micd_ranges;
+
/** Headset polarity configurations */
struct arizona_micd_config *micd_configs;
int num_micd_configs;
#define ARIZONA_MIC_DETECT_1 0x2A3
#define ARIZONA_MIC_DETECT_2 0x2A4
#define ARIZONA_MIC_DETECT_3 0x2A5
+#define ARIZONA_MIC_DETECT_LEVEL_1 0x2A6
+#define ARIZONA_MIC_DETECT_LEVEL_2 0x2A7
+#define ARIZONA_MIC_DETECT_LEVEL_3 0x2A8
+#define ARIZONA_MIC_DETECT_LEVEL_4 0x2A9
#define ARIZONA_MIC_NOISE_MIX_CONTROL_1 0x2C3
#define ARIZONA_ISOLATION_CONTROL 0x2CB
#define ARIZONA_JACK_DETECT_ANALOGUE 0x2D3
#ifdef __KERNEL__
#include <linux/types.h>
+#include <linux/uuid.h>
typedef unsigned long kernel_ulong_t;
#endif
__u32 device; /* Device ID or IPACK_ANY_ID */
};
+#define MEI_CL_MODULE_PREFIX "mei:"
+#define MEI_CL_NAME_SIZE 32
+
+struct mei_cl_device_id {
+ char name[MEI_CL_NAME_SIZE];
+ kernel_ulong_t driver_info;
+};
+
#endif /* LINUX_MOD_DEVICETABLE_H */
/* Custom config requests */
#define EMIF_CUSTOM_CONFIG_LPMODE 0x00000001
#define EMIF_CUSTOM_CONFIG_TEMP_ALERT_POLL_INTERVAL 0x00000002
+#define EMIF_CUSTOM_CONFIG_EXTENDED_TEMP_PART 0x00000004
#ifndef __ASSEMBLY__
/**
--- /dev/null
+/* Copyright (C) 2010 Google, Inc.
+ * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+ * Author: Dima Zavin <dima@android.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _LINUX_SSBI_H
+#define _LINUX_SSBI_H
+
+#include <linux/types.h>
+
+struct ssbi_slave_info {
+ const char *name;
+ void *platform_data;
+};
+
+enum ssbi_controller_type {
+ MSM_SBI_CTRL_SSBI = 0,
+ MSM_SBI_CTRL_SSBI2,
+ MSM_SBI_CTRL_PMIC_ARBITER,
+};
+
+struct ssbi_platform_data {
+ struct ssbi_slave_info slave;
+ enum ssbi_controller_type controller_type;
+};
+
+int ssbi_write(struct device *dev, u16 addr, u8 *buf, int len);
+int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len);
+#endif
int pcmcia_register_driver(struct pcmcia_driver *driver);
void pcmcia_unregister_driver(struct pcmcia_driver *driver);
+/**
+ * module_pcmcia_driver() - Helper macro for registering a pcmcia driver
+ * @__pcmcia_driver: pcmcia_driver struct
+ *
+ * Helper macro for pcmcia drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only use
+ * this macro once, and calling it replaces module_init() and module_exit().
+ */
+#define module_pcmcia_driver(__pcmcia_driver) \
+ module_driver(__pcmcia_driver, pcmcia_register_driver, \
+ pcmcia_unregister_driver)
+
/* for struct resource * array embedded in struct pcmcia_device */
enum {
PCMCIA_IOPORT_0,
#define CN_VAL_DRBD 0x1
#define CN_KVP_IDX 0x9 /* HyperV KVP */
#define CN_KVP_VAL 0x1 /* queries from the kernel */
+#define CN_VSS_IDX 0xA /* HyperV VSS */
+#define CN_VSS_VAL 0x1 /* queries from the kernel */
-#define CN_NETLINK_USERS 10 /* Highest index + 1 */
+
+#define CN_NETLINK_USERS 11 /* Highest index + 1 */
/*
* Maximum connector's message size.
for (i = 1; i < (1 << order); i++)
set_page_refcounted(page + i);
}
+EXPORT_SYMBOL_GPL(split_page);
static int __isolate_free_page(struct page *page, unsigned int order)
{
DEVID_FIELD(x86_cpu_id, model);
DEVID_FIELD(x86_cpu_id, vendor);
+ DEVID(mei_cl_device_id);
+ DEVID_FIELD(mei_cl_device_id, name);
+
return 0;
}
}
ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry);
+/* Looks like: mei:S */
+static int do_mei_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
+
+ sprintf(alias, MEI_CL_MODULE_PREFIX "%s", *name);
+
+ return 1;
+}
+ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry);
+
/* Does namelen bytes of name exactly match the symbol? */
static bool sym_is(const char *name, unsigned namelen, const char *symbol)
{
.suspend = pdacf_suspend,
.resume = pdacf_resume,
#endif
-
};
-
-static int __init init_pdacf(void)
-{
- return pcmcia_register_driver(&pdacf_cs_driver);
-}
-
-static void __exit exit_pdacf(void)
-{
- pcmcia_unregister_driver(&pdacf_cs_driver);
-}
-
-module_init(init_pdacf);
-module_exit(exit_pdacf);
+module_pcmcia_driver(pdacf_cs_driver);
.resume = vxp_resume,
#endif
};
-
-static int __init init_vxpocket(void)
-{
- return pcmcia_register_driver(&vxp_cs_driver);
-}
-
-static void __exit exit_vxpocket(void)
-{
- pcmcia_unregister_driver(&vxp_cs_driver);
-}
-
-module_init(init_vxpocket);
-module_exit(exit_vxpocket);
+module_pcmcia_driver(vxp_cs_driver);
}
EXPORT_SYMBOL_GPL(arizona_out_ev);
+int arizona_hp_ev(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol,
+ int event)
+{
+ struct arizona_priv *priv = snd_soc_codec_get_drvdata(w->codec);
+ unsigned int mask = 1 << w->shift;
+ unsigned int val;
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ val = mask;
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ val = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Store the desired state for the HP outputs */
+ priv->arizona->hp_ena &= ~mask;
+ priv->arizona->hp_ena |= val;
+
+ /* Force off if HPDET magic is active */
+ if (priv->arizona->hpdet_magic)
+ val = 0;
+
+ snd_soc_update_bits(w->codec, ARIZONA_OUTPUT_ENABLES_1, mask, val);
+
+ return arizona_out_ev(w, kcontrol, event);
+}
+EXPORT_SYMBOL_GPL(arizona_hp_ev);
+
static unsigned int arizona_sysclk_48k_rates[] = {
6144000,
12288000,
extern int arizona_out_ev(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event);
+extern int arizona_hp_ev(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol,
+ int event);
extern int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id,
int source, unsigned int freq, int dir);
SND_SOC_DAPM_VALUE_MUX("AEC Loopback", ARIZONA_DAC_AEC_CONTROL_1,
ARIZONA_AEC_LOOPBACK_ENA, 0, &wm5102_aec_loopback_mux),
-SND_SOC_DAPM_PGA_E("OUT1L", ARIZONA_OUTPUT_ENABLES_1,
- ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev,
+SND_SOC_DAPM_PGA_E("OUT1L", SND_SOC_NOPM,
+ ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
-SND_SOC_DAPM_PGA_E("OUT1R", ARIZONA_OUTPUT_ENABLES_1,
- ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_out_ev,
+SND_SOC_DAPM_PGA_E("OUT1R", SND_SOC_NOPM,
+ ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_PGA_E("OUT2L", ARIZONA_OUTPUT_ENABLES_1,
ARIZONA_OUT2L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev,
SND_SOC_DAPM_AIF_IN("AIF3RX2", NULL, 0,
ARIZONA_AIF3_RX_ENABLES, ARIZONA_AIF3RX2_ENA_SHIFT, 0),
-SND_SOC_DAPM_PGA_E("OUT1L", ARIZONA_OUTPUT_ENABLES_1,
- ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev,
+SND_SOC_DAPM_PGA_E("OUT1L", SND_SOC_NOPM,
+ ARIZONA_OUT1L_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
-SND_SOC_DAPM_PGA_E("OUT1R", ARIZONA_OUTPUT_ENABLES_1,
- ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_out_ev,
+SND_SOC_DAPM_PGA_E("OUT1R", SND_SOC_NOPM,
+ ARIZONA_OUT1R_ENA_SHIFT, 0, NULL, 0, arizona_hp_ev,
SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_PGA_E("OUT2L", ARIZONA_OUTPUT_ENABLES_1,
ARIZONA_OUT2L_ENA_SHIFT, 0, NULL, 0, arizona_out_ev,
#define MAX_FILE_NAME 100
#define ENTRIES_PER_BLOCK 50
+#ifndef SOL_NETLINK
+#define SOL_NETLINK 270
+#endif
+
struct kvp_record {
char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE];
char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE];
int main(void)
{
- int fd, len, sock_opt;
+ int fd, len, nl_group;
int error;
struct cn_msg *message;
struct pollfd pfd;
addr.nl_family = AF_NETLINK;
addr.nl_pad = 0;
addr.nl_pid = 0;
- addr.nl_groups = CN_KVP_IDX;
+ addr.nl_groups = 0;
error = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
close(fd);
exit(EXIT_FAILURE);
}
- sock_opt = addr.nl_groups;
- setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt));
+ nl_group = CN_KVP_IDX;
+ setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group));
/*
* Register ourselves with the kernel.
*/
}
incoming_msg = (struct nlmsghdr *)kvp_recv_buffer;
+
+ if (incoming_msg->nlmsg_type != NLMSG_DONE)
+ continue;
+
incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data;
--- /dev/null
+/*
+ * An implementation of the host initiated guest snapshot for Hyper-V.
+ *
+ *
+ * Copyright (C) 2013, Microsoft, Inc.
+ * Author : K. Y. Srinivasan <kys@microsoft.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ */
+
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/poll.h>
+#include <linux/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <arpa/inet.h>
+#include <linux/connector.h>
+#include <linux/hyperv.h>
+#include <linux/netlink.h>
+#include <syslog.h>
+
+static char vss_recv_buffer[4096];
+static char vss_send_buffer[4096];
+static struct sockaddr_nl addr;
+
+#ifndef SOL_NETLINK
+#define SOL_NETLINK 270
+#endif
+
+
+static int vss_operate(int operation)
+{
+ char *fs_op;
+ char cmd[512];
+ char buf[512];
+ FILE *file;
+ char *p;
+ char *x;
+ int error;
+
+ switch (operation) {
+ case VSS_OP_FREEZE:
+ fs_op = "-f ";
+ break;
+ case VSS_OP_THAW:
+ fs_op = "-u ";
+ break;
+ }
+
+ file = popen("mount | awk '/^\/dev\// { print $3}'", "r");
+ if (file == NULL)
+ return;
+
+ while ((p = fgets(buf, sizeof(buf), file)) != NULL) {
+ x = strchr(p, '\n');
+ *x = '\0';
+ if (!strncmp(p, "/", sizeof("/")))
+ continue;
+
+ sprintf(cmd, "%s %s %s", "fsfreeze ", fs_op, p);
+ syslog(LOG_INFO, "VSS cmd is %s\n", cmd);
+ error = system(cmd);
+ }
+ pclose(file);
+
+ sprintf(cmd, "%s %s %s", "fsfreeze ", fs_op, "/");
+ syslog(LOG_INFO, "VSS cmd is %s\n", cmd);
+ error = system(cmd);
+
+ return error;
+}
+
+static int netlink_send(int fd, struct cn_msg *msg)
+{
+ struct nlmsghdr *nlh;
+ unsigned int size;
+ struct msghdr message;
+ char buffer[64];
+ struct iovec iov[2];
+
+ size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len);
+
+ nlh = (struct nlmsghdr *)buffer;
+ nlh->nlmsg_seq = 0;
+ nlh->nlmsg_pid = getpid();
+ nlh->nlmsg_type = NLMSG_DONE;
+ nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh));
+ nlh->nlmsg_flags = 0;
+
+ iov[0].iov_base = nlh;
+ iov[0].iov_len = sizeof(*nlh);
+
+ iov[1].iov_base = msg;
+ iov[1].iov_len = size;
+
+ memset(&message, 0, sizeof(message));
+ message.msg_name = &addr;
+ message.msg_namelen = sizeof(addr);
+ message.msg_iov = iov;
+ message.msg_iovlen = 2;
+
+ return sendmsg(fd, &message, 0);
+}
+
+int main(void)
+{
+ int fd, len, nl_group;
+ int error;
+ struct cn_msg *message;
+ struct pollfd pfd;
+ struct nlmsghdr *incoming_msg;
+ struct cn_msg *incoming_cn_msg;
+ int op;
+ struct hv_vss_msg *vss_msg;
+
+ daemon(1, 0);
+ openlog("Hyper-V VSS", 0, LOG_USER);
+ syslog(LOG_INFO, "VSS starting; pid is:%d", getpid());
+
+ fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
+ if (fd < 0) {
+ syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd);
+ exit(EXIT_FAILURE);
+ }
+ addr.nl_family = AF_NETLINK;
+ addr.nl_pad = 0;
+ addr.nl_pid = 0;
+ addr.nl_groups = 0;
+
+
+ error = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
+ if (error < 0) {
+ syslog(LOG_ERR, "bind failed; error:%d", error);
+ close(fd);
+ exit(EXIT_FAILURE);
+ }
+ nl_group = CN_VSS_IDX;
+ setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group));
+ /*
+ * Register ourselves with the kernel.
+ */
+ message = (struct cn_msg *)vss_send_buffer;
+ message->id.idx = CN_VSS_IDX;
+ message->id.val = CN_VSS_VAL;
+ message->ack = 0;
+ vss_msg = (struct hv_vss_msg *)message->data;
+ vss_msg->vss_hdr.operation = VSS_OP_REGISTER;
+
+ message->len = sizeof(struct hv_vss_msg);
+
+ len = netlink_send(fd, message);
+ if (len < 0) {
+ syslog(LOG_ERR, "netlink_send failed; error:%d", len);
+ close(fd);
+ exit(EXIT_FAILURE);
+ }
+
+ pfd.fd = fd;
+
+ while (1) {
+ struct sockaddr *addr_p = (struct sockaddr *) &addr;
+ socklen_t addr_l = sizeof(addr);
+ pfd.events = POLLIN;
+ pfd.revents = 0;
+ poll(&pfd, 1, -1);
+
+ len = recvfrom(fd, vss_recv_buffer, sizeof(vss_recv_buffer), 0,
+ addr_p, &addr_l);
+
+ if (len < 0 || addr.nl_pid) {
+ syslog(LOG_ERR, "recvfrom failed; pid:%u error:%d %s",
+ addr.nl_pid, errno, strerror(errno));
+ close(fd);
+ return -1;
+ }
+
+ incoming_msg = (struct nlmsghdr *)vss_recv_buffer;
+
+ if (incoming_msg->nlmsg_type != NLMSG_DONE)
+ continue;
+
+ incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg);
+ vss_msg = (struct hv_vss_msg *)incoming_cn_msg->data;
+ op = vss_msg->vss_hdr.operation;
+ error = HV_S_OK;
+
+ switch (op) {
+ case VSS_OP_FREEZE:
+ case VSS_OP_THAW:
+ error = vss_operate(op);
+ if (error)
+ error = HV_E_FAIL;
+ break;
+ default:
+ syslog(LOG_ERR, "Illegal op:%d\n", op);
+ }
+ vss_msg->error = error;
+ len = netlink_send(fd, incoming_cn_msg);
+ if (len < 0) {
+ syslog(LOG_ERR, "net_link send failed; error:%d", len);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+}
git.openpandora.org / pandora-kernel.git / commitdiff