128 lines
5.1 KiB
C
128 lines
5.1 KiB
C
/*
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* include/asm-ppc/pc_serial.h
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*
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* This is basically a copy of include/asm-i386/serial.h.
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* It is used on platforms which have an ISA bus and thus are likely
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* to have PC-style serial ports at the legacy I/O port addresses.
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* It also includes the definitions for the fourport, accent, boca
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* and hub6 multiport serial cards, although I have never heard of
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* anyone using any of those on a PPC platform. -- paulus
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*/
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#include <linux/config.h>
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/*
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* This assumes you have a 1.8432 MHz clock for your UART.
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*
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* It'd be nice if someone built a serial card with a 24.576 MHz
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* clock, since the 16550A is capable of handling a top speed of 1.5
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* megabits/second; but this requires the faster clock.
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*/
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#define BASE_BAUD ( 1843200 / 16 )
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#ifdef CONFIG_SERIAL_MANY_PORTS
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#define RS_TABLE_SIZE 64
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#else
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#define RS_TABLE_SIZE 4
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#endif
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/* Standard COM flags (except for COM4, because of the 8514 problem) */
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#ifdef CONFIG_SERIAL_DETECT_IRQ
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#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
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#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
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#else
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#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
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#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
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#endif
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#ifdef CONFIG_SERIAL_MANY_PORTS
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#define FOURPORT_FLAGS ASYNC_FOURPORT
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#define ACCENT_FLAGS 0
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#define BOCA_FLAGS 0
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#define HUB6_FLAGS 0
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#endif
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/*
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* The following define the access methods for the HUB6 card. All
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* access is through two ports for all 24 possible chips. The card is
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* selected through the high 2 bits, the port on that card with the
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* "middle" 3 bits, and the register on that port with the bottom
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* 3 bits.
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*
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* While the access port and interrupt is configurable, the default
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* port locations are 0x302 for the port control register, and 0x303
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* for the data read/write register. Normally, the interrupt is at irq3
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* but can be anything from 3 to 7 inclusive. Note that using 3 will
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* require disabling com2.
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*/
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#define C_P(card,port) (((card)<<6|(port)<<3) + 1)
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#define STD_SERIAL_PORT_DEFNS \
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/* UART CLK PORT IRQ FLAGS */ \
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{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \
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{ 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \
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{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \
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{ 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */
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#ifdef CONFIG_SERIAL_MANY_PORTS
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#define EXTRA_SERIAL_PORT_DEFNS \
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{ 0, BASE_BAUD, 0x1A0, 9, FOURPORT_FLAGS }, /* ttyS4 */ \
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{ 0, BASE_BAUD, 0x1A8, 9, FOURPORT_FLAGS }, /* ttyS5 */ \
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{ 0, BASE_BAUD, 0x1B0, 9, FOURPORT_FLAGS }, /* ttyS6 */ \
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{ 0, BASE_BAUD, 0x1B8, 9, FOURPORT_FLAGS }, /* ttyS7 */ \
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{ 0, BASE_BAUD, 0x2A0, 5, FOURPORT_FLAGS }, /* ttyS8 */ \
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{ 0, BASE_BAUD, 0x2A8, 5, FOURPORT_FLAGS }, /* ttyS9 */ \
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{ 0, BASE_BAUD, 0x2B0, 5, FOURPORT_FLAGS }, /* ttyS10 */ \
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{ 0, BASE_BAUD, 0x2B8, 5, FOURPORT_FLAGS }, /* ttyS11 */ \
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{ 0, BASE_BAUD, 0x330, 4, ACCENT_FLAGS }, /* ttyS12 */ \
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{ 0, BASE_BAUD, 0x338, 4, ACCENT_FLAGS }, /* ttyS13 */ \
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{ 0, BASE_BAUD, 0x000, 0, 0 }, /* ttyS14 (spare) */ \
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{ 0, BASE_BAUD, 0x000, 0, 0 }, /* ttyS15 (spare) */ \
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{ 0, BASE_BAUD, 0x100, 12, BOCA_FLAGS }, /* ttyS16 */ \
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{ 0, BASE_BAUD, 0x108, 12, BOCA_FLAGS }, /* ttyS17 */ \
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{ 0, BASE_BAUD, 0x110, 12, BOCA_FLAGS }, /* ttyS18 */ \
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{ 0, BASE_BAUD, 0x118, 12, BOCA_FLAGS }, /* ttyS19 */ \
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{ 0, BASE_BAUD, 0x120, 12, BOCA_FLAGS }, /* ttyS20 */ \
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{ 0, BASE_BAUD, 0x128, 12, BOCA_FLAGS }, /* ttyS21 */ \
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{ 0, BASE_BAUD, 0x130, 12, BOCA_FLAGS }, /* ttyS22 */ \
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{ 0, BASE_BAUD, 0x138, 12, BOCA_FLAGS }, /* ttyS23 */ \
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{ 0, BASE_BAUD, 0x140, 12, BOCA_FLAGS }, /* ttyS24 */ \
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{ 0, BASE_BAUD, 0x148, 12, BOCA_FLAGS }, /* ttyS25 */ \
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{ 0, BASE_BAUD, 0x150, 12, BOCA_FLAGS }, /* ttyS26 */ \
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{ 0, BASE_BAUD, 0x158, 12, BOCA_FLAGS }, /* ttyS27 */ \
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{ 0, BASE_BAUD, 0x160, 12, BOCA_FLAGS }, /* ttyS28 */ \
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{ 0, BASE_BAUD, 0x168, 12, BOCA_FLAGS }, /* ttyS29 */ \
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{ 0, BASE_BAUD, 0x170, 12, BOCA_FLAGS }, /* ttyS30 */ \
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{ 0, BASE_BAUD, 0x178, 12, BOCA_FLAGS }, /* ttyS31 */
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#else
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#define EXTRA_SERIAL_PORT_DEFNS
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#endif
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/* You can have up to four HUB6's in the system, but I've only
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* included two cards here for a total of twelve ports.
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*/
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#if (defined(CONFIG_HUB6) && defined(CONFIG_SERIAL_MANY_PORTS))
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#define HUB6_SERIAL_PORT_DFNS \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,0) }, /* ttyS32 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,1) }, /* ttyS33 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,2) }, /* ttyS34 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,3) }, /* ttyS35 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,4) }, /* ttyS36 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(0,5) }, /* ttyS37 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,0) }, /* ttyS38 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,1) }, /* ttyS39 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,2) }, /* ttyS40 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,3) }, /* ttyS41 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,4) }, /* ttyS42 */ \
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{ 0, BASE_BAUD, 0x302, 3, HUB6_FLAGS, C_P(1,5) }, /* ttyS43 */
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#else
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#define HUB6_SERIAL_PORT_DFNS
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#endif
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#define SERIAL_PORT_DFNS \
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STD_SERIAL_PORT_DEFNS \
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EXTRA_SERIAL_PORT_DEFNS \
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HUB6_SERIAL_PORT_DFNS
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