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comvar.h revision 1.62
      1  1.62      matt /*	comvar.h,v 1.55.8.3 2008/01/09 01:52:50 matt Exp	*/
      2   1.1       cgd 
      3   1.1       cgd /*
      4   1.2       cgd  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
      5   1.1       cgd  *
      6   1.1       cgd  * Redistribution and use in source and binary forms, with or without
      7   1.1       cgd  * modification, are permitted provided that the following conditions
      8   1.1       cgd  * are met:
      9   1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     10   1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     11   1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     12   1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     13   1.1       cgd  *    documentation and/or other materials provided with the distribution.
     14   1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     15   1.1       cgd  *    must display the following acknowledgement:
     16   1.1       cgd  *      This product includes software developed by Christopher G. Demetriou
     17   1.1       cgd  *	for the NetBSD Project.
     18   1.1       cgd  * 4. The name of the author may not be used to endorse or promote products
     19   1.1       cgd  *    derived from this software without specific prior written permission
     20   1.1       cgd  *
     21   1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22   1.1       cgd  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23   1.1       cgd  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24   1.1       cgd  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25   1.1       cgd  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26   1.1       cgd  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27   1.1       cgd  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28   1.1       cgd  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29   1.1       cgd  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30   1.1       cgd  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31   1.1       cgd  */
     32   1.1       cgd 
     33  1.17  explorer #include "rnd.h"
     34  1.38  sommerfe #include "opt_multiprocessor.h"
     35  1.38  sommerfe #include "opt_lockdebug.h"
     36  1.38  sommerfe #include "opt_com.h"
     37  1.40     lukem #include "opt_kgdb.h"
     38  1.38  sommerfe 
     39  1.17  explorer #if NRND > 0 && defined(RND_COM)
     40  1.17  explorer #include <sys/rnd.h>
     41  1.17  explorer #endif
     42  1.24   thorpej 
     43  1.32   thorpej #include <sys/callout.h>
     44  1.24   thorpej #include <sys/timepps.h>
     45  1.56        ad #include <sys/mutex.h>
     46  1.17  explorer 
     47  1.54   gdamore #include <dev/ic/comreg.h>	/* for COM_NPORTS */
     48  1.54   gdamore 
     49  1.54   gdamore struct com_regs;
     50  1.54   gdamore 
     51  1.48     perry int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
     52  1.54   gdamore int comcnattach1(struct com_regs *, int, int, int, tcflag_t);
     53  1.12  drochner 
     54  1.12  drochner #ifdef KGDB
     55  1.48     perry int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
     56  1.54   gdamore int com_kgdb_attach1(struct com_regs *, int, int, int, tcflag_t);
     57  1.12  drochner #endif
     58   1.8   mycroft 
     59  1.48     perry int com_is_console(bus_space_tag_t, bus_addr_t, bus_space_handle_t *);
     60  1.14  drochner 
     61   1.8   mycroft /* Hardware flag masks */
     62   1.8   mycroft #define	COM_HW_NOIEN	0x01
     63   1.8   mycroft #define	COM_HW_FIFO	0x02
     64  1.45   thorpej 		/*	0x04	free for use */
     65  1.18      fvdl #define	COM_HW_FLOW	0x08
     66  1.21       cgd #define	COM_HW_DEV_OK	0x20
     67   1.8   mycroft #define	COM_HW_CONSOLE	0x40
     68  1.11   thorpej #define	COM_HW_KGDB	0x80
     69  1.31      soda #define	COM_HW_TXFIFO_DISABLE	0x100
     70  1.43   thorpej #define	COM_HW_NO_TXPRELOAD	0x200
     71   1.8   mycroft 
     72   1.8   mycroft /* Buffer size for character buffer */
     73  1.19   mycroft #define	COM_RING_SIZE	2048
     74   1.8   mycroft 
     75  1.54   gdamore #ifdef	COM_REGMAP
     76  1.54   gdamore #define	COM_REG_RXDATA		0
     77  1.54   gdamore #define	COM_REG_TXDATA		1
     78  1.54   gdamore #define	COM_REG_DLBL		2
     79  1.54   gdamore #define	COM_REG_DLBH		3
     80  1.54   gdamore #define	COM_REG_IER		4
     81  1.54   gdamore #define	COM_REG_IIR		5
     82  1.54   gdamore #define	COM_REG_FIFO		6
     83  1.62      matt #define	COM_REG_TCR		6
     84  1.54   gdamore #define	COM_REG_EFR		7
     85  1.62      matt #define	COM_REG_TLR		7
     86  1.54   gdamore #define	COM_REG_LCR		8
     87  1.62      matt #define	COM_REG_MDR1		8
     88  1.54   gdamore #define	COM_REG_MCR		9
     89  1.54   gdamore #define	COM_REG_LSR		10
     90  1.54   gdamore #define	COM_REG_MSR		11
     91  1.54   gdamore 
     92  1.54   gdamore struct com_regs {
     93  1.54   gdamore 	bus_space_tag_t		cr_iot;
     94  1.54   gdamore 	bus_space_handle_t	cr_ioh;
     95  1.54   gdamore 	bus_addr_t		cr_iobase;
     96  1.54   gdamore 	bus_size_t		cr_nports;
     97  1.54   gdamore 	bus_size_t		cr_map[16];
     98  1.54   gdamore };
     99  1.54   gdamore 
    100  1.54   gdamore extern const bus_size_t com_std_map[16];
    101  1.54   gdamore 
    102  1.54   gdamore #define	COM_INIT_REGS(regs, tag, hdl, addr)				\
    103  1.54   gdamore 	do {								\
    104  1.54   gdamore 		regs.cr_iot = tag;					\
    105  1.54   gdamore 		regs.cr_ioh = hdl;					\
    106  1.54   gdamore 		regs.cr_iobase = addr;					\
    107  1.54   gdamore 		regs.cr_nports = COM_NPORTS;				\
    108  1.54   gdamore 		memcpy(regs.cr_map, com_std_map, sizeof (regs.cr_map));	\
    109  1.54   gdamore 	} while (0)
    110  1.54   gdamore 
    111  1.54   gdamore #else
    112  1.54   gdamore #define	COM_REG_RXDATA		com_data
    113  1.54   gdamore #define	COM_REG_TXDATA		com_data
    114  1.54   gdamore #define	COM_REG_DLBL		com_dlbl
    115  1.54   gdamore #define	COM_REG_DLBH		com_dlbh
    116  1.54   gdamore #define	COM_REG_IER		com_ier
    117  1.54   gdamore #define	COM_REG_IIR		com_iir
    118  1.54   gdamore #define	COM_REG_FIFO		com_fifo
    119  1.54   gdamore #define	COM_REG_EFR		com_efr
    120  1.54   gdamore #define	COM_REG_LCR		com_lctl
    121  1.54   gdamore #define	COM_REG_MCR		com_mcr
    122  1.54   gdamore #define	COM_REG_LSR		com_lsr
    123  1.54   gdamore #define	COM_REG_MSR		com_msr
    124  1.62      matt #define	COM_REG_TCR		com_msr
    125  1.62      matt #define	COM_REG_TLR		com_scratch
    126  1.62      matt #define	COM_REG_MDR1		8
    127  1.54   gdamore 
    128  1.54   gdamore struct com_regs {
    129  1.54   gdamore 	bus_space_tag_t		cr_iot;
    130  1.54   gdamore 	bus_space_handle_t	cr_ioh;
    131  1.54   gdamore 	bus_addr_t		cr_iobase;
    132  1.54   gdamore 	bus_size_t		cr_nports;
    133  1.54   gdamore };
    134  1.54   gdamore 
    135  1.54   gdamore #define	COM_INIT_REGS(regs, tag, hdl, addr)		\
    136  1.54   gdamore 	do {						\
    137  1.54   gdamore 		regs.cr_iot = tag;			\
    138  1.54   gdamore 		regs.cr_ioh = hdl;			\
    139  1.54   gdamore 		regs.cr_iobase = addr;			\
    140  1.54   gdamore 		regs.cr_nports = COM_NPORTS;		\
    141  1.54   gdamore 	} while (0)
    142  1.54   gdamore 
    143  1.54   gdamore #endif
    144  1.54   gdamore 
    145   1.8   mycroft struct com_softc {
    146  1.61      cube 	device_t sc_dev;
    147   1.8   mycroft 	void *sc_si;
    148   1.8   mycroft 	struct tty *sc_tty;
    149  1.32   thorpej 
    150  1.32   thorpej 	struct callout sc_diag_callout;
    151   1.8   mycroft 
    152  1.15        is 	int sc_frequency;
    153   1.8   mycroft 
    154  1.54   gdamore 	struct com_regs sc_regs;
    155   1.8   mycroft 	bus_space_handle_t sc_hayespioh;
    156   1.8   mycroft 
    157  1.54   gdamore 
    158  1.19   mycroft 	u_int sc_overflows,
    159  1.19   mycroft 	      sc_floods,
    160  1.19   mycroft 	      sc_errors;
    161  1.19   mycroft 
    162  1.19   mycroft 	int sc_hwflags,
    163  1.19   mycroft 	    sc_swflags;
    164  1.19   mycroft 	u_int sc_fifolen;
    165  1.19   mycroft 
    166  1.19   mycroft 	u_int sc_r_hiwat,
    167  1.19   mycroft 	      sc_r_lowat;
    168  1.19   mycroft 	u_char *volatile sc_rbget,
    169  1.19   mycroft 	       *volatile sc_rbput;
    170  1.19   mycroft  	volatile u_int sc_rbavail;
    171  1.19   mycroft 	u_char *sc_rbuf,
    172  1.19   mycroft 	       *sc_ebuf;
    173   1.8   mycroft 
    174   1.8   mycroft  	u_char *sc_tba;
    175  1.19   mycroft  	u_int sc_tbc,
    176  1.19   mycroft 	      sc_heldtbc;
    177   1.8   mycroft 
    178  1.10   mycroft 	volatile u_char sc_rx_flags,
    179  1.10   mycroft #define	RX_TTY_BLOCKED		0x01
    180  1.10   mycroft #define	RX_TTY_OVERFLOWED	0x02
    181  1.10   mycroft #define	RX_IBUF_BLOCKED		0x04
    182  1.10   mycroft #define	RX_IBUF_OVERFLOWED	0x08
    183  1.10   mycroft #define	RX_ANY_BLOCK		0x0f
    184   1.8   mycroft 			sc_tx_busy,
    185   1.8   mycroft 			sc_tx_done,
    186   1.8   mycroft 			sc_tx_stopped,
    187   1.8   mycroft 			sc_st_check,
    188   1.8   mycroft 			sc_rx_ready;
    189   1.8   mycroft 
    190   1.8   mycroft 	volatile u_char sc_heldchange;
    191  1.19   mycroft 	volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
    192  1.19   mycroft 	    sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr;
    193  1.19   mycroft 	u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
    194  1.42     enami 
    195  1.42     enami #ifdef COM_HAYESP
    196  1.42     enami 	u_char sc_prescaler;
    197  1.42     enami #endif
    198  1.45   thorpej 
    199  1.45   thorpej 	/*
    200  1.45   thorpej 	 * There are a great many almost-ns16550-compatible UARTs out
    201  1.45   thorpej 	 * there, which have minor differences.  The type field here
    202  1.45   thorpej 	 * lets us distinguish between them.
    203  1.45   thorpej 	 */
    204  1.45   thorpej 	int sc_type;
    205  1.45   thorpej #define	COM_TYPE_NORMAL		0	/* normal 16x50 */
    206  1.45   thorpej #define	COM_TYPE_HAYESP		1	/* Hayes ESP modem */
    207  1.45   thorpej #define	COM_TYPE_PXA2x0		2	/* Intel PXA2x0 processor built-in */
    208  1.47    simonb #define	COM_TYPE_AU1x00		3	/* AMD/Alchemy Au1x000 proc. built-in */
    209  1.62      matt #define	COM_TYPE_OMAP		4	/* TI OMAP processor built-in */
    210  1.20      marc 
    211  1.20      marc 	/* power management hooks */
    212  1.48     perry 	int (*enable)(struct com_softc *);
    213  1.48     perry 	void (*disable)(struct com_softc *);
    214  1.20      marc 	int enabled;
    215  1.23  jonathan 
    216  1.52    kardel 	struct pps_state sc_pps_state;	/* pps state */
    217  1.19   mycroft 
    218  1.17  explorer #if NRND > 0 && defined(RND_COM)
    219  1.17  explorer 	rndsource_element_t  rnd_source;
    220  1.36  sommerfe #endif
    221  1.56        ad 	kmutex_t		sc_lock;
    222   1.1       cgd };
    223   1.1       cgd 
    224  1.48     perry int comprobe1(bus_space_tag_t, bus_space_handle_t);
    225  1.48     perry int comintr(void *);
    226  1.48     perry void com_attach_subr(struct com_softc *);
    227  1.54   gdamore int com_probe_subr(struct com_regs *);
    228  1.48     perry int com_detach(struct device *, int);
    229  1.60    dyoung bool com_resume(device_t PMF_FN_PROTO);
    230  1.48     perry int com_activate(struct device *, enum devact);
    231  1.60    dyoung bool com_cleanup(device_t, int);
    232  1.60    dyoung bool com_suspend(device_t PMF_FN_PROTO);
    233  1.56        ad 
    234  1.57        ad #ifndef IPL_SERIAL
    235  1.56        ad #define	IPL_SERIAL	IPL_TTY
    236  1.56        ad #define	splserial()	spltty()
    237  1.56        ad #endif
    238