WebSVN – HelenOS – Diff – /branches/dynload/uspace/srv/kbd/port/ns16550.c


/*
 * Copyright (c) 2006 Josef Cejka
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup kbd_port
 * @ingroup  kbd
 * @{
 */
/** @file
 * @brief   NS16550 port driver.
 */
 
#include <ipc/ipc.h>
#include <async.h>
#include <sysinfo.h>
#include <kbd.h>
#include <kbd_port.h>
#include <ddi.h>
 
/* NS16550 registers */
#define RBR_REG     0   /** Receiver Buffer Register. */
#define IER_REG     1   /** Interrupt Enable Register. */
#define IIR_REG     2   /** Interrupt Ident Register (read). */
#define FCR_REG     2   /** FIFO control register (write). */
#define LCR_REG     3   /** Line Control register. */
#define MCR_REG     4   /** Modem Control Register. */
#define LSR_REG     5   /** Line Status Register. */
 
#define LSR_DATA_READY  0x01
 
static irq_cmd_t ns16550_cmds[] = {
    {
        .cmd = CMD_PIO_READ_8,
        .addr = (void *) 0, /* will be patched in run-time */
        .dstarg = 1
    },
    {
        .cmd = CMD_BTEST,
        .value = LSR_DATA_READY,
        .srcarg = 1,
        .dstarg = 3
    },
    {
        .cmd = CMD_PREDICATE,
        .value = 2,
        .srcarg = 3
    },
    {
        .cmd = CMD_PIO_READ_8,
        .addr = (void *) 0, /* will be patched in run-time */
        .dstarg = 2
    },
    {
        .cmd = CMD_ACCEPT
    }
};
 
irq_code_t ns16550_kbd = {
    sizeof(ns16550_cmds) / sizeof(irq_cmd_t),
    ns16550_cmds
};
 
static void ns16550_irq_handler(ipc_callid_t iid, ipc_call_t *call);
 
static uintptr_t ns16550_physical;
static uintptr_t ns16550_kernel;
 
int kbd_port_init(void)
{
    void *vaddr;
 
    async_set_interrupt_received(ns16550_irq_handler);
 
    ns16550_physical = sysinfo_value("kbd.address.physical");
    ns16550_kernel = sysinfo_value("kbd.address.kernel");
    ns16550_kbd.cmds[0].addr = (void *) (ns16550_kernel + LSR_REG);
    ns16550_kbd.cmds[3].addr = (void *) (ns16550_kernel + RBR_REG);
    ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"),
        0, &ns16550_kbd);
    return pio_enable((void *) ns16550_physical, 8, &vaddr);
 
 
}
 
static void ns16550_irq_handler(ipc_callid_t iid, ipc_call_t *call)
{
    int scan_code = IPC_GET_ARG2(*call);
    kbd_push_scancode(scan_code);
}
 
/**
 * @}
 */
 

Rev 4344	Rev 4345
1	/*	1	/*
2	* Copyright (c) 2006 Josef Cejka	2	* Copyright (c) 2006 Josef Cejka
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup kbd_port	29	/** @addtogroup kbd_port
30	* @ingroup kbd	30	* @ingroup kbd
31	* @{	31	* @{
32	*/	32	*/
33	/** @file	33	/** @file
34	* @brief NS16550 port driver.	34	* @brief NS16550 port driver.
35	*/	35	*/
36		36
37	#include <ipc/ipc.h>	37	#include <ipc/ipc.h>
38	#include <async.h>	38	#include <async.h>
39	#include <sysinfo.h>	39	#include <sysinfo.h>
40	#include <kbd.h>	40	#include <kbd.h>
41	#include <kbd_port.h>	41	#include <kbd_port.h>
42	#include <ddi.h>	42	#include <ddi.h>
43		43
44	/* NS16550 registers */	44	/* NS16550 registers */
45	#define RBR_REG 0 /** Receiver Buffer Register. */	45	#define RBR_REG 0 /** Receiver Buffer Register. */
46	#define IER_REG 1 /** Interrupt Enable Register. */	46	#define IER_REG 1 /** Interrupt Enable Register. */
47	#define IIR_REG 2 /** Interrupt Ident Register (read). */	47	#define IIR_REG 2 /** Interrupt Ident Register (read). */
48	#define FCR_REG 2 /** FIFO control register (write). */	48	#define FCR_REG 2 /** FIFO control register (write). */
49	#define LCR_REG 3 /** Line Control register. */	49	#define LCR_REG 3 /** Line Control register. */
50	#define MCR_REG 4 /** Modem Control Register. */	50	#define MCR_REG 4 /** Modem Control Register. */
51	#define LSR_REG 5 /** Line Status Register. */	51	#define LSR_REG 5 /** Line Status Register. */
52		52
53	#define LSR_DATA_READY 0x01	53	#define LSR_DATA_READY 0x01
54		54
55	static irq_cmd_t ns16550_cmds[] = {	55	static irq_cmd_t ns16550_cmds[] = {
56	{	56	{
57	.cmd = CMD_PIO_READ_8,	57	.cmd = CMD_PIO_READ_8,
58	.addr = (void ) 0, / will be patched in run-time */	58	.addr = (void ) 0, / will be patched in run-time */
59	.dstarg = 1	59	.dstarg = 1
60	},	60	},
61	{	61	{
62	.cmd = CMD_BTEST,	62	.cmd = CMD_BTEST,
63	.value = LSR_DATA_READY,	63	.value = LSR_DATA_READY,
64	.srcarg = 1,	64	.srcarg = 1,
65	.dstarg = 3	65	.dstarg = 3
66	},	66	},
67	{	67	{
68	.cmd = CMD_PREDICATE,	68	.cmd = CMD_PREDICATE,
69	.value = 2,	69	.value = 2,
70	.srcarg = 3	70	.srcarg = 3
71	},	71	},
72	{	72	{
73	.cmd = CMD_PIO_READ_8,	73	.cmd = CMD_PIO_READ_8,
74	.addr = (void ) 0, / will be patched in run-time */	74	.addr = (void ) 0, / will be patched in run-time */
75	.dstarg = 2	75	.dstarg = 2
76	},	76	},
77	{	77	{
78	.cmd = CMD_ACCEPT	78	.cmd = CMD_ACCEPT
79	}	79	}
80	};	80	};
81		81
82	irq_code_t ns16550_kbd = {	82	irq_code_t ns16550_kbd = {
83	sizeof(ns16550_cmds) / sizeof(irq_cmd_t),	83	sizeof(ns16550_cmds) / sizeof(irq_cmd_t),
84	ns16550_cmds	84	ns16550_cmds
85	};	85	};
86		86
87	static void ns16550_irq_handler(ipc_callid_t iid, ipc_call_t *call);	87	static void ns16550_irq_handler(ipc_callid_t iid, ipc_call_t *call);
88		88
-		89	static uintptr_t ns16550_physical;
89	uint16_t ns16550_port;	90	static uintptr_t ns16550_kernel;
90		91
91	int kbd_port_init(void)	92	int kbd_port_init(void)
92	{	93	{
-		94	void *vaddr;
-		95
93	async_set_interrupt_received(ns16550_irq_handler);	96	async_set_interrupt_received(ns16550_irq_handler);
94		97
-		98	ns16550_physical = sysinfo_value("kbd.address.physical");
95	ns16550_port = sysinfo_value("kbd.port");	99	ns16550_kernel = sysinfo_value("kbd.address.kernel");
96	ns16550_kbd.cmds[0].addr = (void *) (ns16550_port + LSR_REG);	100	ns16550_kbd.cmds[0].addr = (void *) (ns16550_kernel + LSR_REG);
97	ns16550_kbd.cmds[3].addr = (void *) (ns16550_port + RBR_REG);	101	ns16550_kbd.cmds[3].addr = (void *) (ns16550_kernel + RBR_REG);
98	ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"),	102	ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"),
99	0, &ns16550_kbd);	103	0, &ns16550_kbd);
100	iospace_enable(task_get_id(), ns16550_port, 8);	104	return pio_enable((void *) ns16550_physical, 8, &vaddr);
101		-
102	return 0;	-
103	}	105	}
104		106
105	static void ns16550_irq_handler(ipc_callid_t iid, ipc_call_t *call)	107	static void ns16550_irq_handler(ipc_callid_t iid, ipc_call_t *call)
106	{	108	{
107	int scan_code = IPC_GET_ARG2(*call);	109	int scan_code = IPC_GET_ARG2(*call);
108	kbd_push_scancode(scan_code);	110	kbd_push_scancode(scan_code);
109	}	111	}
110		112
111	/**	113	/**
112	* @}	114	* @}
113	*/	115	*/
114		116

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(root)/branches/dynload/uspace/srv/kbd/port/ns16550.c – Rev 4344 → 4345