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-rw-r--r--include/linux/atmel_serial.h2
-rw-r--r--include/linux/kbd_kern.h3
-rw-r--r--include/linux/llist.h23
-rw-r--r--include/linux/of.h7
-rw-r--r--include/linux/pci_ids.h4
-rw-r--r--include/linux/platform_data/max310x.h9
-rw-r--r--include/linux/platform_data/serial-sccnxp.h3
-rw-r--r--include/linux/tty.h66
-rw-r--r--include/linux/tty_flip.h8
-rw-r--r--include/linux/tty_ldisc.h16
10 files changed, 97 insertions, 44 deletions
diff --git a/include/linux/atmel_serial.h b/include/linux/atmel_serial.h
index fd6833764d72..be201ca2990c 100644
--- a/include/linux/atmel_serial.h
+++ b/include/linux/atmel_serial.h
@@ -124,4 +124,6 @@
#define ATMEL_US_NER 0x44 /* Number of Errors Register */
#define ATMEL_US_IF 0x4c /* IrDA Filter Register */
+#define ATMEL_US_NAME 0xf0 /* Ip Name */
+
#endif
diff --git a/include/linux/kbd_kern.h b/include/linux/kbd_kern.h
index b7c8cdc1d422..cbfb171bbcba 100644
--- a/include/linux/kbd_kern.h
+++ b/include/linux/kbd_kern.h
@@ -36,10 +36,9 @@ struct kbd_struct {
#define VC_CTRLRLOCK KG_CTRLR /* ctrlr lock mode */
unsigned char slockstate; /* for `sticky' Shift, Ctrl, etc. */
- unsigned char ledmode:2; /* one 2-bit value */
+ unsigned char ledmode:1;
#define LED_SHOW_FLAGS 0 /* traditional state */
#define LED_SHOW_IOCTL 1 /* only change leds upon ioctl */
-#define LED_SHOW_MEM 2 /* `heartbeat': peek into memory */
unsigned char ledflagstate:4; /* flags, not lights */
unsigned char default_ledflagstate:4;
diff --git a/include/linux/llist.h b/include/linux/llist.h
index cdaa7f023899..8828a78dec9a 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -125,6 +125,29 @@ static inline void init_llist_head(struct llist_head *list)
(pos) = llist_entry((pos)->member.next, typeof(*(pos)), member))
/**
+ * llist_for_each_entry_safe - iterate over some deleted entries of lock-less list of given type
+ * safe against removal of list entry
+ * @pos: the type * to use as a loop cursor.
+ * @n: another type * to use as temporary storage
+ * @node: the first entry of deleted list entries.
+ * @member: the name of the llist_node with the struct.
+ *
+ * In general, some entries of the lock-less list can be traversed
+ * safely only after being removed from list, so start with an entry
+ * instead of list head.
+ *
+ * If being used on entries deleted from lock-less list directly, the
+ * traverse order is from the newest to the oldest added entry. If
+ * you want to traverse from the oldest to the newest, you must
+ * reverse the order by yourself before traversing.
+ */
+#define llist_for_each_entry_safe(pos, n, node, member) \
+ for (pos = llist_entry((node), typeof(*pos), member); \
+ &pos->member != NULL && \
+ (n = llist_entry(pos->member.next, typeof(*n), member), true); \
+ pos = n)
+
+/**
* llist_empty - tests whether a lock-less list is empty
* @head: the list to test
*
diff --git a/include/linux/of.h b/include/linux/of.h
index 1fd08ca23106..429e16801858 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -343,6 +343,8 @@ const char *of_prop_next_string(struct property *prop, const char *cur);
s; \
s = of_prop_next_string(prop, s))
+int of_device_is_stdout_path(struct device_node *dn);
+
#else /* CONFIG_OF */
static inline const char* of_node_full_name(struct device_node *np)
@@ -505,6 +507,11 @@ static inline int of_machine_is_compatible(const char *compat)
return 0;
}
+static inline int of_device_is_stdout_path(struct device_node *dn)
+{
+ return 0;
+}
+
#define of_match_ptr(_ptr) NULL
#define of_match_node(_matches, _node) NULL
#define of_property_for_each_u32(np, propname, prop, p, u) \
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 3bed2e89611b..6dec3d6abe0b 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1311,6 +1311,8 @@
#define PCI_DEVICE_ID_IMS_TT128 0x9128
#define PCI_DEVICE_ID_IMS_TT3D 0x9135
+#define PCI_VENDOR_ID_AMCC 0x10e8
+
#define PCI_VENDOR_ID_INTERG 0x10ea
#define PCI_DEVICE_ID_INTERG_1682 0x1682
#define PCI_DEVICE_ID_INTERG_2000 0x2000
@@ -2256,12 +2258,10 @@
/*
* ADDI-DATA GmbH communication cards <info@addi-data.com>
*/
-#define PCI_VENDOR_ID_ADDIDATA_OLD 0x10E8
#define PCI_VENDOR_ID_ADDIDATA 0x15B8
#define PCI_DEVICE_ID_ADDIDATA_APCI7500 0x7000
#define PCI_DEVICE_ID_ADDIDATA_APCI7420 0x7001
#define PCI_DEVICE_ID_ADDIDATA_APCI7300 0x7002
-#define PCI_DEVICE_ID_ADDIDATA_APCI7800 0x818E
#define PCI_DEVICE_ID_ADDIDATA_APCI7500_2 0x7009
#define PCI_DEVICE_ID_ADDIDATA_APCI7420_2 0x700A
#define PCI_DEVICE_ID_ADDIDATA_APCI7300_2 0x700B
diff --git a/include/linux/platform_data/max310x.h b/include/linux/platform_data/max310x.h
index 91648bf5fc5c..dd11dcd1a184 100644
--- a/include/linux/platform_data/max310x.h
+++ b/include/linux/platform_data/max310x.h
@@ -1,5 +1,5 @@
/*
- * Maxim (Dallas) MAX3107/8 serial driver
+ * Maxim (Dallas) MAX3107/8/9, MAX14830 serial driver
*
* Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
*
@@ -37,14 +37,13 @@
* };
*/
-#define MAX310X_MAX_UARTS 1
+#define MAX310X_MAX_UARTS 4
/* MAX310X platform data structure */
struct max310x_pdata {
/* Flags global to driver */
- const u8 driver_flags:2;
+ const u8 driver_flags;
#define MAX310X_EXT_CLK (0x00000001) /* External clock enable */
-#define MAX310X_AUTOSLEEP (0x00000002) /* Enable AutoSleep mode */
/* Flags global to UART port */
const u8 uart_flags[MAX310X_MAX_UARTS];
#define MAX310X_LOOPBACK (0x00000001) /* Loopback mode enable */
@@ -60,8 +59,6 @@ struct max310x_pdata {
void (*init)(void);
/* Called before finish */
void (*exit)(void);
- /* Suspend callback */
- void (*suspend)(int do_suspend);
};
#endif
diff --git a/include/linux/platform_data/serial-sccnxp.h b/include/linux/platform_data/serial-sccnxp.h
index bdc510d03245..af0c8c3b89ae 100644
--- a/include/linux/platform_data/serial-sccnxp.h
+++ b/include/linux/platform_data/serial-sccnxp.h
@@ -60,7 +60,6 @@
* };
*
* static struct sccnxp_pdata sc2892_info = {
- * .frequency = 3686400,
* .mctrl_cfg[0] = MCTRL_SIG(DIR_OP, LINE_OP0),
* .mctrl_cfg[1] = MCTRL_SIG(DIR_OP, LINE_OP1),
* };
@@ -78,8 +77,6 @@
/* SCCNXP platform data structure */
struct sccnxp_pdata {
- /* Frequency (extrenal clock or crystal) */
- int frequency;
/* Shift for A0 line */
const u8 reg_shift;
/* Modem control lines configuration */
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 01ac30efd6a6..64f864651d86 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -10,6 +10,8 @@
#include <linux/mutex.h>
#include <linux/tty_flags.h>
#include <uapi/linux/tty.h>
+#include <linux/rwsem.h>
+#include <linux/llist.h>
@@ -29,9 +31,10 @@
#define __DISABLED_CHAR '\0'
struct tty_buffer {
- struct tty_buffer *next;
- char *char_buf_ptr;
- unsigned char *flag_buf_ptr;
+ union {
+ struct tty_buffer *next;
+ struct llist_node free;
+ };
int used;
int size;
int commit;
@@ -40,25 +43,25 @@ struct tty_buffer {
unsigned long data[0];
};
-/*
- * We default to dicing tty buffer allocations to this many characters
- * in order to avoid multiple page allocations. We know the size of
- * tty_buffer itself but it must also be taken into account that the
- * the buffer is 256 byte aligned. See tty_buffer_find for the allocation
- * logic this must match
- */
-
-#define TTY_BUFFER_PAGE (((PAGE_SIZE - sizeof(struct tty_buffer)) / 2) & ~0xFF)
+static inline unsigned char *char_buf_ptr(struct tty_buffer *b, int ofs)
+{
+ return ((unsigned char *)b->data) + ofs;
+}
+static inline char *flag_buf_ptr(struct tty_buffer *b, int ofs)
+{
+ return (char *)char_buf_ptr(b, ofs) + b->size;
+}
struct tty_bufhead {
- struct work_struct work;
- spinlock_t lock;
struct tty_buffer *head; /* Queue head */
+ struct work_struct work;
+ struct mutex lock;
+ atomic_t priority;
+ struct tty_buffer sentinel;
+ struct llist_head free; /* Free queue head */
+ atomic_t memory_used; /* In-use buffers excluding free list */
struct tty_buffer *tail; /* Active buffer */
- struct tty_buffer *free; /* Free queue head */
- int memory_used; /* Buffer space used excluding
- free queue */
};
/*
* When a break, frame error, or parity error happens, these codes are
@@ -199,9 +202,6 @@ struct tty_port {
wait_queue_head_t close_wait; /* Close waiters */
wait_queue_head_t delta_msr_wait; /* Modem status change */
unsigned long flags; /* TTY flags ASY_*/
- unsigned long iflags; /* TTYP_ internal flags */
-#define TTYP_FLUSHING 1 /* Flushing to ldisc in progress */
-#define TTYP_FLUSHPENDING 2 /* Queued buffer flush pending */
unsigned char console:1, /* port is a console */
low_latency:1; /* direct buffer flush */
struct mutex mutex; /* Locking */
@@ -238,14 +238,16 @@ struct tty_struct {
int index;
/* Protects ldisc changes: Lock tty not pty */
- struct mutex ldisc_mutex;
+ struct ld_semaphore ldisc_sem;
struct tty_ldisc *ldisc;
struct mutex atomic_write_lock;
struct mutex legacy_mutex;
- struct mutex termios_mutex;
+ struct mutex throttle_mutex;
+ struct rw_semaphore termios_rwsem;
+ struct mutex winsize_mutex;
spinlock_t ctrl_lock;
- /* Termios values are protected by the termios mutex */
+ /* Termios values are protected by the termios rwsem */
struct ktermios termios, termios_locked;
struct termiox *termiox; /* May be NULL for unsupported */
char name[64];
@@ -253,7 +255,7 @@ struct tty_struct {
struct pid *session;
unsigned long flags;
int count;
- struct winsize winsize; /* termios mutex */
+ struct winsize winsize; /* winsize_mutex */
unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1;
unsigned char ctrl_status; /* ctrl_lock */
unsigned int receive_room; /* Bytes free for queue */
@@ -303,10 +305,7 @@ struct tty_file_private {
#define TTY_EXCLUSIVE 3 /* Exclusive open mode */
#define TTY_DEBUG 4 /* Debugging */
#define TTY_DO_WRITE_WAKEUP 5 /* Call write_wakeup after queuing new */
-#define TTY_PUSH 6 /* n_tty private */
#define TTY_CLOSING 7 /* ->close() in progress */
-#define TTY_LDISC 9 /* Line discipline attached */
-#define TTY_LDISC_CHANGING 10 /* Line discipline changing */
#define TTY_LDISC_OPEN 11 /* Line discipline is open */
#define TTY_PTY_LOCK 16 /* pty private */
#define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */
@@ -559,6 +558,19 @@ extern void tty_ldisc_init(struct tty_struct *tty);
extern void tty_ldisc_deinit(struct tty_struct *tty);
extern void tty_ldisc_begin(void);
+static inline int tty_ldisc_receive_buf(struct tty_ldisc *ld, unsigned char *p,
+ char *f, int count)
+{
+ if (ld->ops->receive_buf2)
+ count = ld->ops->receive_buf2(ld->tty, p, f, count);
+ else {
+ count = min_t(int, count, ld->tty->receive_room);
+ if (count)
+ ld->ops->receive_buf(ld->tty, p, f, count);
+ }
+ return count;
+}
+
/* n_tty.c */
extern struct tty_ldisc_ops tty_ldisc_N_TTY;
diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index e0f252633b47..21ddd7d9ea1f 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -1,6 +1,7 @@
#ifndef _LINUX_TTY_FLIP_H
#define _LINUX_TTY_FLIP_H
+extern int tty_buffer_space_avail(struct tty_port *port);
extern int tty_buffer_request_room(struct tty_port *port, size_t size);
extern int tty_insert_flip_string_flags(struct tty_port *port,
const unsigned char *chars, const char *flags, size_t size);
@@ -18,8 +19,8 @@ static inline int tty_insert_flip_char(struct tty_port *port,
{
struct tty_buffer *tb = port->buf.tail;
if (tb && tb->used < tb->size) {
- tb->flag_buf_ptr[tb->used] = flag;
- tb->char_buf_ptr[tb->used++] = ch;
+ *flag_buf_ptr(tb, tb->used) = flag;
+ *char_buf_ptr(tb, tb->used++) = ch;
return 1;
}
return tty_insert_flip_string_flags(port, &ch, &flag, 1);
@@ -31,4 +32,7 @@ static inline int tty_insert_flip_string(struct tty_port *port,
return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size);
}
+extern void tty_buffer_lock_exclusive(struct tty_port *port);
+extern void tty_buffer_unlock_exclusive(struct tty_port *port);
+
#endif /* _LINUX_TTY_FLIP_H */
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index a1b048999821..f15c898ff462 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -109,6 +109,17 @@
*
* Tells the discipline that the DCD pin has changed its status.
* Used exclusively by the N_PPS (Pulse-Per-Second) line discipline.
+ *
+ * int (*receive_buf2)(struct tty_struct *, const unsigned char *cp,
+ * char *fp, int count);
+ *
+ * This function is called by the low-level tty driver to send
+ * characters received by the hardware to the line discpline for
+ * processing. <cp> is a pointer to the buffer of input
+ * character received by the device. <fp> is a pointer to a
+ * pointer of flag bytes which indicate whether a character was
+ * received with a parity error, etc.
+ * If assigned, prefer this function for automatic flow control.
*/
#include <linux/fs.h>
@@ -195,6 +206,8 @@ struct tty_ldisc_ops {
void (*write_wakeup)(struct tty_struct *);
void (*dcd_change)(struct tty_struct *, unsigned int);
void (*fasync)(struct tty_struct *tty, int on);
+ int (*receive_buf2)(struct tty_struct *, const unsigned char *cp,
+ char *fp, int count);
struct module *owner;
@@ -203,8 +216,7 @@ struct tty_ldisc_ops {
struct tty_ldisc {
struct tty_ldisc_ops *ops;
- atomic_t users;
- wait_queue_head_t wq_idle;
+ struct tty_struct *tty;
};
#define TTY_LDISC_MAGIC 0x5403
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 22:13:11 +0000