WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia64/src/ia64.c


/*
 * Copyright (c) 2005 Jakub Jermar
 * 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 ia64
 * @{
 */
/** @file
 */
 
#include <arch.h>
#include <arch/ski/ski.h>
#include <arch/drivers/it.h>
#include <arch/interrupt.h>
#include <arch/barrier.h>
#include <arch/asm.h>
#include <arch/register.h>
#include <arch/types.h>
#include <arch/context.h>
#include <arch/stack.h>
#include <arch/mm/page.h>
#include <mm/as.h>
#include <config.h>
#include <userspace.h>
#include <console/console.h>
#include <proc/uarg.h>
#include <syscall/syscall.h>
#include <ddi/irq.h>
#include <ddi/device.h>
#include <arch/bootinfo.h>
#include <genarch/drivers/legacy/ia32/io.h>
#include <genarch/drivers/ega/ega.h>
#include <genarch/kbrd/kbrd.h>
#include <genarch/drivers/i8042/i8042.h>
#include <genarch/kbd/ns16550.h>
#include <smp/smp.h>
#include <smp/ipi.h>
#include <arch/atomic.h>
#include <panic.h>
#include <print.h>
#include <sysinfo/sysinfo.h>
#include <string.h>
 
/* NS16550 as a COM 1 */
#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
 
bootinfo_t *bootinfo;
 
static uint64_t iosapic_base = 0xfec00000;
 
/** Performs ia64-specific initialization before main_bsp() is called. */
void arch_pre_main(void)
{
    /* Setup usermode init tasks. */
 
    unsigned int i;
   
    init.cnt = bootinfo->taskmap.count;
   
    for (i = 0; i < init.cnt; i++) {
        init.tasks[i].addr =
            ((unsigned long) bootinfo->taskmap.tasks[i].addr) |
            VRN_MASK;
        init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
        strncpy(init.tasks[i].name, bootinfo->taskmap.tasks[i].name,
            CONFIG_TASK_NAME_BUFLEN);
    }
}
 
void arch_pre_mm_init(void)
{
    /*
     * Set Interruption Vector Address (i.e. location of interruption vector
     * table).
     */
    iva_write((uintptr_t) &ivt);
    srlz_d();
   
}
 
static void iosapic_init(void)
{
    uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
    int i;
   
    int myid, myeid;
   
    myid = ia64_get_cpu_id();
    myeid = ia64_get_cpu_eid();
 
    for (i = 0; i < 16; i++) {
        if (i == 2)
            continue;    /* Disable Cascade interrupt */
        ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
        srlz_d();
        ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
        srlz_d();
        ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
        srlz_d();
        ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
            myeid << (48 - 32);
        srlz_d();
    }
 
}
 
 
void arch_post_mm_init(void)
{
    if (config.cpu_active == 1) {
        iosapic_init();
        irq_init(INR_COUNT, INR_COUNT);
#ifdef SKI
        ski_init_console();
#else
        ega_init(EGA_BASE, EGA_VIDEORAM);
#endif
    }
    it_init();
       
}
 
void arch_post_cpu_init(void)
{
}
 
void arch_pre_smp_init(void)
{
}
 
void arch_post_smp_init(void)
{
    /*
     * Create thread that polls keyboard.
     */
#ifdef SKI
    thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
    if (!t)
        panic("Cannot create kkbdpoll.");
    thread_ready(t);
#endif      
 
#ifdef I460GX
    devno_t devno = device_assign_devno();
    inr_t inr;
 
#ifdef CONFIG_NS16550
    inr = NS16550_IRQ;
    (void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL);
    sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
    sysinfo_set_item_val("kbd.address.physical", NULL,
        (uintptr_t) NS16550_BASE);
    sysinfo_set_item_val("kbd.address.kernel", NULL,
        (uintptr_t) NS16550_BASE);
#else
    inr = IRQ_KBD;
    kbrd_init(stdin);
    (void) i8042_init((i8042_t *)I8042_BASE, devno, inr, &kbrdin);
    trap_virtual_enable_irqs(1 << inr);
    sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
    sysinfo_set_item_val("kbd.address.physical", NULL,
        (uintptr_t) I8042_BASE);
    sysinfo_set_item_val("kbd.address.kernel", NULL,
        (uintptr_t) I8042_BASE);
#endif
    sysinfo_set_item_val("kbd", NULL, true);
    sysinfo_set_item_val("kbd.devno", NULL, devno);
    sysinfo_set_item_val("kbd.inr", NULL, inr);
#endif
 
    sysinfo_set_item_val("ia64_iospace", NULL, true);
    sysinfo_set_item_val("ia64_iospace.address", NULL, true);
    sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
}
 
 
/** Enter userspace and never return. */
void userspace(uspace_arg_t *kernel_uarg)
{
    psr_t psr;
    rsc_t rsc;
 
    psr.value = psr_read();
    psr.cpl = PL_USER;
    psr.i = true;           /* start with interrupts enabled */
    psr.ic = true;
    psr.ri = 0;         /* start with instruction #0 */
    psr.bn = 1;         /* start in bank 0 */
 
    asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
    rsc.loadrs = 0;
    rsc.be = false;
    rsc.pl = PL_USER;
    rsc.mode = 3;           /* eager mode */
 
    switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
        ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
        ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
        ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
        (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
 
    while (1)
        ;
}
 
/** Set thread-local-storage pointer.
 *
 * We use r13 (a.k.a. tp) for this purpose.
 */
unative_t sys_tls_set(unative_t addr)
{
        return 0;
}
 
/** Acquire console back for kernel
 *
 */
void arch_grab_console(void)
{
#ifdef SKI
    ski_kbd_grab();
#endif
}
 
/** Return console to userspace
 *
 */
void arch_release_console(void)
{
#ifdef SKI
    ski_kbd_release();
#endif
}
 
void arch_reboot(void)
{
    pio_write_8((ioport8_t *)0x64, 0xfe);
    while (1)
        ;
}
 
/** Construct function pointer
 *
 * @param fptr   function pointer structure
 * @param addr   function address
 * @param caller calling function address
 *
 * @return address of the function pointer
 *
 */
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
{
    fptr->fnc = (unative_t) addr;
    fptr->gp = ((unative_t *) caller)[1];
   
    return (void *) fptr;
}
 
/** @}
 */
 

Rev 4031	Rev 4042
1	/*	1	/*
2	* Copyright (c) 2005 Jakub Jermar	2	* Copyright (c) 2005 Jakub Jermar
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 ia64	29	/** @addtogroup ia64
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch.h>	35	#include <arch.h>
36	#include <arch/ski/ski.h>	36	#include <arch/ski/ski.h>
37	#include <arch/drivers/it.h>	37	#include <arch/drivers/it.h>
38	#include <arch/interrupt.h>	38	#include <arch/interrupt.h>
39	#include <arch/barrier.h>	39	#include <arch/barrier.h>
40	#include <arch/asm.h>	40	#include <arch/asm.h>
41	#include <arch/register.h>	41	#include <arch/register.h>
42	#include <arch/types.h>	42	#include <arch/types.h>
43	#include <arch/context.h>	43	#include <arch/context.h>
44	#include <arch/stack.h>	44	#include <arch/stack.h>
45	#include <arch/mm/page.h>	45	#include <arch/mm/page.h>
46	#include <mm/as.h>	46	#include <mm/as.h>
47	#include <config.h>	47	#include <config.h>
48	#include <userspace.h>	48	#include <userspace.h>
49	#include <console/console.h>	49	#include <console/console.h>
50	#include <proc/uarg.h>	50	#include <proc/uarg.h>
51	#include <syscall/syscall.h>	51	#include <syscall/syscall.h>
52	#include <ddi/irq.h>	52	#include <ddi/irq.h>
53	#include <ddi/device.h>	53	#include <ddi/device.h>
54	#include <arch/bootinfo.h>	54	#include <arch/bootinfo.h>
55	#include <genarch/drivers/legacy/ia32/io.h>	55	#include <genarch/drivers/legacy/ia32/io.h>
56	#include <genarch/drivers/ega/ega.h>	56	#include <genarch/drivers/ega/ega.h>
57	#include <genarch/kbd/i8042.h>	57	#include <genarch/kbrd/kbrd.h>
-		58	#include <genarch/drivers/i8042/i8042.h>
58	#include <genarch/kbd/ns16550.h>	59	#include <genarch/kbd/ns16550.h>
59	#include <smp/smp.h>	60	#include <smp/smp.h>
60	#include <smp/ipi.h>	61	#include <smp/ipi.h>
61	#include <arch/atomic.h>	62	#include <arch/atomic.h>
62	#include <panic.h>	63	#include <panic.h>
63	#include <print.h>	64	#include <print.h>
64	#include <sysinfo/sysinfo.h>	65	#include <sysinfo/sysinfo.h>
65	#include <string.h>	66	#include <string.h>
66		67
67	/* NS16550 as a COM 1 */	68	/* NS16550 as a COM 1 */
68	#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)	69	#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
69		70
70	bootinfo_t *bootinfo;	71	bootinfo_t *bootinfo;
71		72
72	static uint64_t iosapic_base = 0xfec00000;	73	static uint64_t iosapic_base = 0xfec00000;
73		74
74	/** Performs ia64-specific initialization before main_bsp() is called. */	75	/** Performs ia64-specific initialization before main_bsp() is called. */
75	void arch_pre_main(void)	76	void arch_pre_main(void)
76	{	77	{
77	/* Setup usermode init tasks. */	78	/* Setup usermode init tasks. */
78		79
79	unsigned int i;	80	unsigned int i;
80		81
81	init.cnt = bootinfo->taskmap.count;	82	init.cnt = bootinfo->taskmap.count;
82		83
83	for (i = 0; i < init.cnt; i++) {	84	for (i = 0; i < init.cnt; i++) {
84	init.tasks[i].addr =	85	init.tasks[i].addr =
85	((unsigned long) bootinfo->taskmap.tasks[i].addr) \|	86	((unsigned long) bootinfo->taskmap.tasks[i].addr) \|
86	VRN_MASK;	87	VRN_MASK;
87	init.tasks[i].size = bootinfo->taskmap.tasks[i].size;	88	init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
88	strncpy(init.tasks[i].name, bootinfo->taskmap.tasks[i].name,	89	strncpy(init.tasks[i].name, bootinfo->taskmap.tasks[i].name,
89	CONFIG_TASK_NAME_BUFLEN);	90	CONFIG_TASK_NAME_BUFLEN);
90	}	91	}
91	}	92	}
92		93
93	void arch_pre_mm_init(void)	94	void arch_pre_mm_init(void)
94	{	95	{
95	/*	96	/*
96	* Set Interruption Vector Address (i.e. location of interruption vector	97	* Set Interruption Vector Address (i.e. location of interruption vector
97	* table).	98	* table).
98	*/	99	*/
99	iva_write((uintptr_t) &ivt);	100	iva_write((uintptr_t) &ivt);
100	srlz_d();	101	srlz_d();
101		102
102	}	103	}
103		104
104	static void iosapic_init(void)	105	static void iosapic_init(void)
105	{	106	{
106	uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) \| FW_OFFSET;	107	uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) \| FW_OFFSET;
107	int i;	108	int i;
108		109
109	int myid, myeid;	110	int myid, myeid;
110		111
111	myid = ia64_get_cpu_id();	112	myid = ia64_get_cpu_id();
112	myeid = ia64_get_cpu_eid();	113	myeid = ia64_get_cpu_eid();
113		114
114	for (i = 0; i < 16; i++) {	115	for (i = 0; i < 16; i++) {
115	if (i == 2)	116	if (i == 2)
116	continue; /* Disable Cascade interrupt */	117	continue; /* Disable Cascade interrupt */
117	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i;	118	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i;
118	srlz_d();	119	srlz_d();
119	((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;	120	((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
120	srlz_d();	121	srlz_d();
121	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i + 1;	122	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i + 1;
122	srlz_d();	123	srlz_d();
123	((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) \|	124	((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) \|
124	myeid << (48 - 32);	125	myeid << (48 - 32);
125	srlz_d();	126	srlz_d();
126	}	127	}
127		128
128	}	129	}
129		130
130		131
131	void arch_post_mm_init(void)	132	void arch_post_mm_init(void)
132	{	133	{
133	if (config.cpu_active == 1) {	134	if (config.cpu_active == 1) {
134	iosapic_init();	135	iosapic_init();
135	irq_init(INR_COUNT, INR_COUNT);	136	irq_init(INR_COUNT, INR_COUNT);
136	#ifdef SKI	137	#ifdef SKI
137	ski_init_console();	138	ski_init_console();
138	#else	139	#else
139	ega_init(EGA_BASE, EGA_VIDEORAM);	140	ega_init(EGA_BASE, EGA_VIDEORAM);
140	#endif	141	#endif
141	}	142	}
142	it_init();	143	it_init();
143		144
144	}	145	}
145		146
146	void arch_post_cpu_init(void)	147	void arch_post_cpu_init(void)
147	{	148	{
148	}	149	}
149		150
150	void arch_pre_smp_init(void)	151	void arch_pre_smp_init(void)
151	{	152	{
152	}	153	}
153		154
154	void arch_post_smp_init(void)	155	void arch_post_smp_init(void)
155	{	156	{
156	/*	157	/*
157	* Create thread that polls keyboard.	158	* Create thread that polls keyboard.
158	*/	159	*/
159	#ifdef SKI	160	#ifdef SKI
160	thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);	161	thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
161	if (!t)	162	if (!t)
162	panic("Cannot create kkbdpoll.");	163	panic("Cannot create kkbdpoll.");
163	thread_ready(t);	164	thread_ready(t);
164	#endif	165	#endif
165		166
166	#ifdef I460GX	167	#ifdef I460GX
167	devno_t devno = device_assign_devno();	168	devno_t devno = device_assign_devno();
168	inr_t inr;	169	inr_t inr;
169		170
170	#ifdef CONFIG_NS16550	171	#ifdef CONFIG_NS16550
171	inr = NS16550_IRQ;	172	inr = NS16550_IRQ;
172	(void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL);	173	(void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL);
173	sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);	174	sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
174	sysinfo_set_item_val("kbd.address.physical", NULL,	175	sysinfo_set_item_val("kbd.address.physical", NULL,
175	(uintptr_t) NS16550_BASE);	176	(uintptr_t) NS16550_BASE);
176	sysinfo_set_item_val("kbd.address.kernel", NULL,	177	sysinfo_set_item_val("kbd.address.kernel", NULL,
177	(uintptr_t) NS16550_BASE);	178	(uintptr_t) NS16550_BASE);
178	#else	179	#else
179	inr = IRQ_KBD;	180	inr = IRQ_KBD;
-		181	kbrd_init(stdin);
180	(void) i8042_init((i8042_t *)I8042_BASE, devno, inr);	182	(void) i8042_init((i8042_t *)I8042_BASE, devno, inr, &kbrdin);
-		183	trap_virtual_enable_irqs(1 << inr);
181	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);	184	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
182	sysinfo_set_item_val("kbd.address.physical", NULL,	185	sysinfo_set_item_val("kbd.address.physical", NULL,
183	(uintptr_t) I8042_BASE);	186	(uintptr_t) I8042_BASE);
184	sysinfo_set_item_val("kbd.address.kernel", NULL,	187	sysinfo_set_item_val("kbd.address.kernel", NULL,
185	(uintptr_t) I8042_BASE);	188	(uintptr_t) I8042_BASE);
186	#endif	189	#endif
187	sysinfo_set_item_val("kbd", NULL, true);	190	sysinfo_set_item_val("kbd", NULL, true);
188	sysinfo_set_item_val("kbd.devno", NULL, devno);	191	sysinfo_set_item_val("kbd.devno", NULL, devno);
189	sysinfo_set_item_val("kbd.inr", NULL, inr);	192	sysinfo_set_item_val("kbd.inr", NULL, inr);
190	#endif	193	#endif
191		194
192	sysinfo_set_item_val("ia64_iospace", NULL, true);	195	sysinfo_set_item_val("ia64_iospace", NULL, true);
193	sysinfo_set_item_val("ia64_iospace.address", NULL, true);	196	sysinfo_set_item_val("ia64_iospace.address", NULL, true);
194	sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);	197	sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
195	}	198	}
196		199
197		200
198	/** Enter userspace and never return. */	201	/** Enter userspace and never return. */
199	void userspace(uspace_arg_t *kernel_uarg)	202	void userspace(uspace_arg_t *kernel_uarg)
200	{	203	{
201	psr_t psr;	204	psr_t psr;
202	rsc_t rsc;	205	rsc_t rsc;
203		206
204	psr.value = psr_read();	207	psr.value = psr_read();
205	psr.cpl = PL_USER;	208	psr.cpl = PL_USER;
206	psr.i = true; /* start with interrupts enabled */	209	psr.i = true; /* start with interrupts enabled */
207	psr.ic = true;	210	psr.ic = true;
208	psr.ri = 0; /* start with instruction #0 */	211	psr.ri = 0; /* start with instruction #0 */
209	psr.bn = 1; /* start in bank 0 */	212	psr.bn = 1; /* start in bank 0 */
210		213
211	asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));	214	asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
212	rsc.loadrs = 0;	215	rsc.loadrs = 0;
213	rsc.be = false;	216	rsc.be = false;
214	rsc.pl = PL_USER;	217	rsc.pl = PL_USER;
215	rsc.mode = 3; /* eager mode */	218	rsc.mode = 3; /* eager mode */
216		219
217	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,	220	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
218	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -	221	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
219	ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),	222	ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
220	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,	223	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
221	(uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);	224	(uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
222		225
223	while (1)	226	while (1)
224	;	227	;
225	}	228	}
226		229
227	/** Set thread-local-storage pointer.	230	/** Set thread-local-storage pointer.
228	*	231	*
229	* We use r13 (a.k.a. tp) for this purpose.	232	* We use r13 (a.k.a. tp) for this purpose.
230	*/	233	*/
231	unative_t sys_tls_set(unative_t addr)	234	unative_t sys_tls_set(unative_t addr)
232	{	235	{
233	return 0;	236	return 0;
234	}	237	}
235		238
236	/** Acquire console back for kernel	239	/** Acquire console back for kernel
237	*	240	*
238	*/	241	*/
239	void arch_grab_console(void)	242	void arch_grab_console(void)
240	{	243	{
241	#ifdef SKI	244	#ifdef SKI
242	ski_kbd_grab();	245	ski_kbd_grab();
243	#endif	246	#endif
244	}	247	}
245		248
246	/** Return console to userspace	249	/** Return console to userspace
247	*	250	*
248	*/	251	*/
249	void arch_release_console(void)	252	void arch_release_console(void)
250	{	253	{
251	#ifdef SKI	254	#ifdef SKI
252	ski_kbd_release();	255	ski_kbd_release();
253	#endif	256	#endif
254	}	257	}
255		258
256	void arch_reboot(void)	259	void arch_reboot(void)
257	{	260	{
258	pio_write_8((ioport8_t *)0x64, 0xfe);	261	pio_write_8((ioport8_t *)0x64, 0xfe);
259	while (1)	262	while (1)
260	;	263	;
261	}	264	}
262		265
263	/** Construct function pointer	266	/** Construct function pointer
264	*	267	*
265	* @param fptr function pointer structure	268	* @param fptr function pointer structure
266	* @param addr function address	269	* @param addr function address
267	* @param caller calling function address	270	* @param caller calling function address
268	*	271	*
269	* @return address of the function pointer	272	* @return address of the function pointer
270	*	273	*
271	*/	274	*/
272	void arch_construct_function(fncptr_t fptr, void addr, void caller)	275	void arch_construct_function(fncptr_t fptr, void addr, void caller)
273	{	276	{
274	fptr->fnc = (unative_t) addr;	277	fptr->fnc = (unative_t) addr;
275	fptr->gp = ((unative_t *) caller)[1];	278	fptr->gp = ((unative_t *) caller)[1];
276		279
277	return (void *) fptr;	280	return (void *) fptr;
278	}	281	}
279		282
280	/** @}	283	/** @}
281	*/	284	*/
282		285

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(root)/trunk/kernel/arch/ia64/src/ia64.c @ 4026 – Rev 4031 → 4042