enum tpm_const {
TPM_MINOR = 224, /* officially assigned */
TPM_BUFSIZE = 4096,
- TPM_NUM_DEVICES = 256,
+ TPM_NUM_DEVICES = 65536,
TPM_RETRY = 50, /* 5 seconds */
};
struct tpm_vendor_specific {
void __iomem *iobase; /* ioremapped address */
- unsigned long base; /* TPM base address */
int irq;
- int region_size;
- int have_region;
-
struct list_head list;
int locality;
unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
void *priv;
wait_queue_head_t read_queue;
- wait_queue_head_t int_queue;
-
- u16 manufacturer_id;
};
#define TPM_VPRIV(c) ((c)->vendor.priv)
};
struct tpm_chip {
- struct device *pdev; /* Device stuff */
struct device dev;
struct cdev cdev;
+ /* A driver callback under ops cannot be run unless ops_sem is held
+ * (sometimes implicitly, eg for the sysfs code). ops becomes null
+ * when the driver is unregistered, see tpm_try_get_ops.
+ */
+ struct rw_semaphore ops_sem;
const struct tpm_class_ops *ops;
+
unsigned int flags;
int dev_num; /* /dev/tpm# */
- char devname[7];
unsigned long is_open; /* only one allowed */
int time_expired;
acpi_handle acpi_dev_handle;
char ppi_version[TPM_PPI_VERSION_LEN + 1];
#endif /* CONFIG_ACPI */
-
- struct list_head list;
};
#define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)
-static inline void tpm_chip_put(struct tpm_chip *chip)
-{
- module_put(chip->pdev->driver->owner);
-}
-
static inline int tpm_read_index(int base, int index)
{
outb(index, base);
extern struct class *tpm_class;
extern dev_t tpm_devt;
extern const struct file_operations tpm_fops;
+extern struct idr dev_nums_idr;
ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *);
ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
wait_queue_head_t *, bool);
struct tpm_chip *tpm_chip_find_get(int chip_num);
-extern struct tpm_chip *tpmm_chip_alloc(struct device *dev,
+__must_check int tpm_try_get_ops(struct tpm_chip *chip);
+void tpm_put_ops(struct tpm_chip *chip);
+
+extern struct tpm_chip *tpm_chip_alloc(struct device *dev,
+ const struct tpm_class_ops *ops);
+extern struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
const struct tpm_class_ops *ops);
extern int tpm_chip_register(struct tpm_chip *chip);
extern void tpm_chip_unregister(struct tpm_chip *chip);