serial.h
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上传日期:2013-02-24
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- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1999 by Ralf Baechle
- * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
- */
- #include <linux/config.h>
- #include <asm/bootinfo.h>
- #include <asm/jazz.h>
- /*
- * This assumes you have a 1.8432 MHz clock for your UART.
- *
- * It'd be nice if someone built a serial card with a 24.576 MHz
- * clock, since the 16550A is capable of handling a top speed of 1.5
- * megabits/second; but this requires the faster clock.
- */
- #define BASE_BAUD ( 1843200 / 16 )
- #ifndef CONFIG_OLIVETTI_M700
- /* Some Jazz machines seem to have an 8MHz crystal clock but I don't know
- exactly which ones ... XXX */
- #define JAZZ_BASE_BAUD ( 8000000 / 16 ) /* ( 3072000 / 16) */
- #else
- /* but the M700 isn't such a strange beast */
- #define JAZZ_BASE_BAUD BASE_BAUD
- #endif
- /* Standard COM flags (except for COM4, because of the 8514 problem) */
- #ifdef CONFIG_SERIAL_DETECT_IRQ
- #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
- #define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
- #else
- #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
- #define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
- #endif
- #ifdef CONFIG_SERIAL_MANY_PORTS
- #define FOURPORT_FLAGS ASYNC_FOURPORT
- #define ACCENT_FLAGS 0
- #define BOCA_FLAGS 0
- #define HUB6_FLAGS 0
- #define RS_TABLE_SIZE 64
- #else
- #define RS_TABLE_SIZE
- #endif
- /*
- * The following define the access methods for the HUB6 card. All
- * access is through two ports for all 24 possible chips. The card is
- * selected through the high 2 bits, the port on that card with the
- * "middle" 3 bits, and the register on that port with the bottom
- * 3 bits.
- *
- * While the access port and interrupt is configurable, the default
- * port locations are 0x302 for the port control register, and 0x303
- * for the data read/write register. Normally, the interrupt is at irq3
- * but can be anything from 3 to 7 inclusive. Note that using 3 will
- * require disabling com2.
- */
- #define C_P(card,port) (((card)<<6|(port)<<3) + 1)
- #ifdef CONFIG_MIPS_JAZZ
- #define _JAZZ_SERIAL_INIT(int, base)
- { baud_base: JAZZ_BASE_BAUD, irq: int, flags: STD_COM_FLAGS,
- iomem_base: (u8 *) base, iomem_reg_shift: 0,
- io_type: SERIAL_IO_MEM }
- #define JAZZ_SERIAL_PORT_DEFNS
- _JAZZ_SERIAL_INIT(JAZZ_SERIAL1_IRQ, JAZZ_SERIAL1_BASE),
- _JAZZ_SERIAL_INIT(JAZZ_SERIAL2_IRQ, JAZZ_SERIAL2_BASE),
- #else
- #define JAZZ_SERIAL_PORT_DEFNS
- #endif
- #ifdef CONFIG_MIPS_ATLAS
- #include <asm/mips-boards/atlas.h>
- #include <asm/mips-boards/atlasint.h>
- #define ATLAS_SERIAL_PORT_DEFNS
- /* UART CLK PORT IRQ FLAGS */
- { 0, ATLAS_BASE_BAUD, ATLAS_UART_REGS_BASE, ATLASINT_UART, STD_COM_FLAGS }, /* ttyS0 */
- #else
- #define ATLAS_SERIAL_PORT_DEFNS
- #endif
- /*
- * Both Galileo boards have the same UART mappings.
- */
- #if defined (CONFIG_MIPS_EV96100) || defined (CONFIG_MIPS_EV64120)
- #include <asm/galileo-boards/ev96100.h>
- #include <asm/galileo-boards/ev96100int.h>
- #define EV96100_SERIAL_PORT_DEFNS
- { baud_base: EV96100_BASE_BAUD, port: EV96100_UART0_REGS_BASE,
- irq: EV96100INT_UART_0, flags: STD_COM_FLAGS, type: 0x3,
- iomem_base: EV96100_UART0_REGS_BASE },
- { baud_base: EV96100_BASE_BAUD, port: EV96100_UART1_REGS_BASE,
- irq: EV96100INT_UART_0, flags: STD_COM_FLAGS, type: 0x3,
- iomem_base: EV96100_UART1_REGS_BASE },
- #else
- #define EV96100_SERIAL_PORT_DEFNS
- #endif
- #ifdef CONFIG_MIPS_ITE8172
- #include <asm/it8172/it8172.h>
- #include <asm/it8172/it8172_int.h>
- #include <asm/it8712.h>
- #define ITE_SERIAL_PORT_DEFNS
- { baud_base: BASE_BAUD, port: (IT8172_PCI_IO_BASE + IT_UART_BASE),
- irq: IT8172_UART_IRQ, flags: STD_COM_FLAGS, type: 0x3 },
- { baud_base: (24000000/(16*13)), port: (IT8172_PCI_IO_BASE + IT8712_UART1_PORT),
- irq: IT8172_SERIRQ_4, flags: STD_COM_FLAGS, type: 0x3 },
- /* Smart Card Reader 0 */
- { baud_base: BASE_BAUD, port: (IT8172_PCI_IO_BASE + IT_SCR0_BASE),
- irq: IT8172_SCR0_IRQ, flags: STD_COM_FLAGS, type: 0x3 },
- /* Smart Card Reader 1 */
- { baud_base: BASE_BAUD, port: (IT8172_PCI_IO_BASE + IT_SCR1_BASE),
- irq: IT8172_SCR1_IRQ, flags: STD_COM_FLAGS, type: 0x3 },
- #else
- #define ITE_SERIAL_PORT_DEFNS
- #endif
- #ifdef CONFIG_MIPS_IVR
- #include <asm/it8172/it8172.h>
- #include <asm/it8172/it8172_int.h>
- #define IVR_SERIAL_PORT_DEFNS
- { baud_base: BASE_BAUD, port: (IT8172_PCI_IO_BASE + IT_UART_BASE),
- irq: IT8172_UART_IRQ, flags: STD_COM_FLAGS, type: 0x3 },
- /* Smart Card Reader 1 */
- { baud_base: BASE_BAUD, port: (IT8172_PCI_IO_BASE + IT_SCR1_BASE),
- irq: IT8172_SCR1_IRQ, flags: STD_COM_FLAGS, type: 0x3 },
- #else
- #define IVR_SERIAL_PORT_DEFNS
- #endif
- #ifdef CONFIG_AU1000_UART
- #include <asm/au1000.h>
- #define AU1000_SERIAL_PORT_DEFNS
- { baud_base: 0, port: UART0_ADDR, irq: AU1000_UART0_INT,
- flags: STD_COM_FLAGS, type: 1 },
- { baud_base: 0, port: UART1_ADDR, irq: AU1000_UART1_INT,
- flags: STD_COM_FLAGS, type: 1 },
- { baud_base: 0, port: UART2_ADDR, irq: AU1000_UART2_INT,
- flags: STD_COM_FLAGS, type: 1 },
- { baud_base: 0, port: UART3_ADDR, irq: AU1000_UART3_INT,
- flags: STD_COM_FLAGS, type: 1 },
- #else
- #define AU1000_SERIAL_PORT_DEFNS
- #endif
- #ifdef CONFIG_HAVE_STD_PC_SERIAL_PORT
- #define STD_SERIAL_PORT_DEFNS
- /* UART CLK PORT IRQ FLAGS */
- { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */
- { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */
- { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */
- { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */
- #ifdef CONFIG_SERIAL_MANY_PORTS
- #define EXTRA_SERIAL_PORT_DEFNS
- { 0, BASE_BAUD, 0x1A0, 9, FOURPORT_FLAGS }, /* ttyS4 */
- { 0, BASE_BAUD, 0x1A8, 9, FOURPORT_FLAGS }, /* ttyS5 */
- { 0, BASE_BAUD, 0x1B0, 9, FOURPORT_FLAGS }, /* ttyS6 */
- { 0, BASE_BAUD, 0x1B8, 9, FOURPORT_FLAGS }, /* ttyS7 */
- { 0, BASE_BAUD, 0x2A0, 5, FOURPORT_FLAGS }, /* ttyS8 */
- { 0, BASE_BAUD, 0x2A8, 5, FOURPORT_FLAGS }, /* ttyS9 */
- { 0, BASE_BAUD, 0x2B0, 5, FOURPORT_FLAGS }, /* ttyS10 */
- { 0, BASE_BAUD, 0x2B8, 5, FOURPORT_FLAGS }, /* ttyS11 */
- { 0, BASE_BAUD, 0x330, 4, ACCENT_FLAGS }, /* ttyS12 */
- { 0, BASE_BAUD, 0x338, 4, ACCENT_FLAGS }, /* ttyS13 */
- { 0, BASE_BAUD, 0x000, 0, 0 }, /* ttyS14 (spare) */
- { 0, BASE_BAUD, 0x000, 0, 0 }, /* ttyS15 (spare) */
- { 0, BASE_BAUD, 0x100, 12, BOCA_FLAGS }, /* ttyS16 */
- { 0, BASE_BAUD, 0x108, 12, BOCA_FLAGS }, /* ttyS17 */
- { 0, BASE_BAUD, 0x110, 12, BOCA_FLAGS }, /* ttyS18 */
- { 0, BASE_BAUD, 0x118, 12, BOCA_FLAGS }, /* ttyS19 */
- { 0, BASE_BAUD, 0x120, 12, BOCA_FLAGS }, /* ttyS20 */
- { 0, BASE_BAUD, 0x128, 12, BOCA_FLAGS }, /* ttyS21 */
- { 0, BASE_BAUD, 0x130, 12, BOCA_FLAGS }, /* ttyS22 */
- { 0, BASE_BAUD, 0x138, 12, BOCA_FLAGS }, /* ttyS23 */
- { 0, BASE_BAUD, 0x140, 12, BOCA_FLAGS }, /* ttyS24 */
- { 0, BASE_BAUD, 0x148, 12, BOCA_FLAGS }, /* ttyS25 */
- { 0, BASE_BAUD, 0x150, 12, BOCA_FLAGS }, /* ttyS26 */
- { 0, BASE_BAUD, 0x158, 12, BOCA_FLAGS }, /* ttyS27 */
- { 0, BASE_BAUD, 0x160, 12, BOCA_FLAGS }, /* ttyS28 */
- { 0, BASE_BAUD, 0x168, 12, BOCA_FLAGS }, /* ttyS29 */
- { 0, BASE_BAUD, 0x170, 12, BOCA_FLAGS }, /* ttyS30 */
- { 0, BASE_BAUD, 0x178, 12, BOCA_FLAGS }, /* ttyS31 */
- #else /* CONFIG_SERIAL_MANY_PORTS */
- #define EXTRA_SERIAL_PORT_DEFNS
- #endif /* CONFIG_SERIAL_MANY_PORTS */
- #else /* CONFIG_HAVE_STD_PC_SERIAL_PORTS */
- #define STD_SERIAL_PORT_DEFNS
- #define EXTRA_SERIAL_PORT_DEFNS
- #endif /* CONFIG_HAVE_STD_PC_SERIAL_PORTS */
- /* You can have up to four HUB6's in the system, but I've only
- * included two cards here for a total of twelve ports.
- */
- #if (defined(CONFIG_HUB6) && defined(CONFIG_SERIAL_MANY_PORTS))
- #define HUB6_SERIAL_PORT_DFNS
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,0) }, /* ttyS32 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,1) }, /* ttyS33 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,2) }, /* ttyS34 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,3) }, /* ttyS35 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,4) }, /* ttyS36 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,5) }, /* ttyS37 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,0) }, /* ttyS38 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,1) }, /* ttyS39 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,2) }, /* ttyS40 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,3) }, /* ttyS41 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,4) }, /* ttyS42 */
- { 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,5) }, /* ttyS43 */
- #else
- #define HUB6_SERIAL_PORT_DFNS
- #endif
- #ifdef CONFIG_MCA
- #define MCA_SERIAL_PORT_DFNS
- { 0, BASE_BAUD, 0x3220, 3, STD_COM_FLAGS },
- { 0, BASE_BAUD, 0x3228, 3, STD_COM_FLAGS },
- { 0, BASE_BAUD, 0x4220, 3, STD_COM_FLAGS },
- { 0, BASE_BAUD, 0x4228, 3, STD_COM_FLAGS },
- { 0, BASE_BAUD, 0x5220, 3, STD_COM_FLAGS },
- { 0, BASE_BAUD, 0x5228, 3, STD_COM_FLAGS },
- #else
- #define MCA_SERIAL_PORT_DFNS
- #endif
- #ifdef CONFIG_MOMENCO_OCELOT
- /* Ordinary NS16552 duart with a 20MHz crystal. */
- #define OCELOT_BASE_BAUD ( 20000000 / 16 )
- #define OCELOT_SERIAL1_IRQ 4
- #define OCELOT_SERIAL1_BASE 0xe0001020
- #define _OCELOT_SERIAL_INIT(int, base)
- { baud_base: OCELOT_BASE_BAUD, irq: int, flags: STD_COM_FLAGS,
- iomem_base: (u8 *) base, iomem_reg_shift: 2,
- io_type: SERIAL_IO_MEM }
- #define MOMENCO_OCELOT_SERIAL_PORT_DEFNS
- _OCELOT_SERIAL_INIT(OCELOT_SERIAL1_IRQ, OCELOT_SERIAL1_BASE)
- #else
- #define MOMENCO_OCELOT_SERIAL_PORT_DEFNS
- #endif
- #ifdef CONFIG_DDB5477
- #define DDB5477_SERIAL_PORT_DEFNS
- { baud_base: BASE_BAUD, irq: 12, flags: STD_COM_FLAGS,
- iomem_base: (u8*)0xbfa04200, iomem_reg_shift: 3,
- io_type: SERIAL_IO_MEM},
- { baud_base: BASE_BAUD, irq: 28, flags: STD_COM_FLAGS,
- iomem_base: (u8*)0xbfa04240, iomem_reg_shift: 3,
- io_type: SERIAL_IO_MEM},
- #else
- #define DDB5477_SERIAL_PORT_DEFNS
- #endif
- #define SERIAL_PORT_DFNS
- IVR_SERIAL_PORT_DEFNS
- ITE_SERIAL_PORT_DEFNS
- ATLAS_SERIAL_PORT_DEFNS
- EV96100_SERIAL_PORT_DEFNS
- JAZZ_SERIAL_PORT_DEFNS
- STD_SERIAL_PORT_DEFNS
- EXTRA_SERIAL_PORT_DEFNS
- HUB6_SERIAL_PORT_DFNS
- MOMENCO_OCELOT_SERIAL_PORT_DEFNS
- AU1000_SERIAL_PORT_DEFNS
- DDB5477_SERIAL_PORT_DEFNS