serial: refactor ASYNC_ flags
Define ASYNCB_* flags which are bit numbers of the ASYNC_* flags. This is useful for {test,set,clear}_bit. Also convert each ASYNC_% to be (1 << ASYNCB_%) and define masks with the macros, not constants. Tested with: #include "PATH_TO_KERNEL/include/linux/serial.h" static struct { unsigned int new, old; } as[] = { { ASYNC_HUP_NOTIFY, 0x0001 }, { ASYNC_FOURPORT, 0x0002 }, ... { ASYNC_BOOT_ONLYMCA, 0x00400000 }, { ASYNC_INTERNAL_FLAGS, 0xFFC00000 } }; ... for (a = 0; a < ARRAY_SIZE(as); a++) if (as[a].old != as[a].new) printf("%.8x != %.8x\n", as[a].old, as[a].new); Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -96,54 +96,76 @@ struct serial_uart_config {
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/*
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* Definitions for async_struct (and serial_struct) flags field
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*
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* Define ASYNCB_* for convenient use with {test,set,clear}_bit.
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*/
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#define ASYNC_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes
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on the callout port */
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#define ASYNC_FOURPORT 0x0002 /* Set OU1, OUT2 per AST Fourport settings */
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#define ASYNC_SAK 0x0004 /* Secure Attention Key (Orange book) */
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#define ASYNC_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
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#define ASYNC_SPD_MASK 0x1030
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#define ASYNC_SPD_HI 0x0010 /* Use 56000 instead of 38400 bps */
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#define ASYNC_SPD_VHI 0x0020 /* Use 115200 instead of 38400 bps */
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#define ASYNC_SPD_CUST 0x0030 /* Use user-specified divisor */
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#define ASYNC_SKIP_TEST 0x0040 /* Skip UART test during autoconfiguration */
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#define ASYNC_AUTO_IRQ 0x0080 /* Do automatic IRQ during autoconfiguration */
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#define ASYNC_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
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#define ASYNC_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
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#define ASYNC_CALLOUT_NOHUP 0x0400 /* Don't do hangups for cua device */
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#define ASYNC_HARDPPS_CD 0x0800 /* Call hardpps when CD goes high */
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#define ASYNC_SPD_SHI 0x1000 /* Use 230400 instead of 38400 bps */
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#define ASYNC_SPD_WARP 0x1010 /* Use 460800 instead of 38400 bps */
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#define ASYNC_LOW_LATENCY 0x2000 /* Request low latency behaviour */
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#define ASYNC_BUGGY_UART 0x4000 /* This is a buggy UART, skip some safety
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#define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes
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* on the callout port */
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#define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */
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#define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */
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#define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */
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#define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */
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#define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */
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#define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */
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#define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during
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* autoconfiguration */
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#define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */
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#define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */
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#define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */
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#define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */
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#define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */
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#define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */
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#define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety
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* checks. Note: can be dangerous! */
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#define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */
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#define ASYNCB_LAST_USER 15
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#define ASYNC_AUTOPROBE 0x8000 /* Port was autoprobed by PCI or PNP code */
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/* Internal flags used only by kernel */
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#define ASYNCB_INITIALIZED 31 /* Serial port was initialized */
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#define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */
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#define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */
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#define ASYNCB_CLOSING 27 /* Serial port is closing */
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#define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */
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#define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */
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#define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */
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#define ASYNCB_CONS_FLOW 23 /* flow control for console */
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#define ASYNCB_BOOT_ONLYMCA 22 /* Probe only if MCA bus */
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#define ASYNCB_FIRST_KERNEL 22
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#define ASYNC_FLAGS 0x7FFF /* Possible legal async flags */
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#define ASYNC_USR_MASK 0x3430 /* Legal flags that non-privileged
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* users can set or reset */
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#define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY)
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#define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT)
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#define ASYNC_SAK (1U << ASYNCB_SAK)
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#define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS)
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#define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI)
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#define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI)
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#define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST)
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#define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ)
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#define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT)
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#define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT)
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#define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP)
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#define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD)
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#define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI)
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#define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY)
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#define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART)
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#define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE)
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/* Internal flags used only by kernel/chr_drv/serial.c */
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#define ASYNC_INITIALIZED 0x80000000 /* Serial port was initialized */
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#define ASYNC_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
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#define ASYNC_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
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#define ASYNC_CLOSING 0x08000000 /* Serial port is closing */
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#define ASYNC_CTS_FLOW 0x04000000 /* Do CTS flow control */
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#define ASYNC_CHECK_CD 0x02000000 /* i.e., CLOCAL */
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#define ASYNC_SHARE_IRQ 0x01000000 /* for multifunction cards
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--- no longer used */
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#define ASYNC_CONS_FLOW 0x00800000 /* flow control for console */
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#define ASYNC_FLAGS ((1U << ASYNCB_LAST_USER) - 1)
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#define ASYNC_USR_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI| \
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ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|ASYNC_LOW_LATENCY)
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#define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI)
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#define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI)
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#define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
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#define ASYNC_BOOT_ONLYMCA 0x00400000 /* Probe only if MCA bus */
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#define ASYNC_INTERNAL_FLAGS 0xFFC00000 /* Internal flags */
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#define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED)
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#define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE)
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#define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF)
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#define ASYNC_CLOSING (1U << ASYNCB_CLOSING)
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#define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW)
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#define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD)
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#define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ)
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#define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW)
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#define ASYNC_BOOT_ONLYMCA (1U << ASYNCB_BOOT_ONLYMCA)
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#define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1))
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/*
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* Multiport serial configuration structure --- external structure
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