diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/atmel_serial.h | 2 | ||||
| -rw-r--r-- | include/linux/kbd_kern.h | 3 | ||||
| -rw-r--r-- | include/linux/llist.h | 23 | ||||
| -rw-r--r-- | include/linux/of.h | 7 | ||||
| -rw-r--r-- | include/linux/pci_ids.h | 4 | ||||
| -rw-r--r-- | include/linux/platform_data/max310x.h | 9 | ||||
| -rw-r--r-- | include/linux/platform_data/serial-sccnxp.h | 3 | ||||
| -rw-r--r-- | include/linux/tty.h | 66 | ||||
| -rw-r--r-- | include/linux/tty_flip.h | 8 | ||||
| -rw-r--r-- | include/linux/tty_ldisc.h | 16 | ||||
| -rw-r--r-- | include/uapi/linux/serial_core.h | 3 |
11 files changed, 100 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 diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h index 9119cc0977bf..e40ebe124ced 100644 --- a/include/uapi/linux/serial_core.h +++ b/include/uapi/linux/serial_core.h @@ -232,4 +232,7 @@ /* SH-SCI */ #define PORT_HSCIF 104 +/* ST ASC type numbers */ +#define PORT_ASC 105 + #endif /* _UAPILINUX_SERIAL_CORE_H */ |
