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/kbd/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;
    (void) i8042_init((i8042_t *)I8042_BASE, devno, 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 4026	Rev 4031
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/kbd/i8042.h>
58	#include <genarch/kbd/ns16550.h>	58	#include <genarch/kbd/ns16550.h>
59	#include <smp/smp.h>	59	#include <smp/smp.h>
60	#include <smp/ipi.h>	60	#include <smp/ipi.h>
61	#include <arch/atomic.h>	61	#include <arch/atomic.h>
62	#include <panic.h>	62	#include <panic.h>
63	#include <print.h>	63	#include <print.h>
64	#include <sysinfo/sysinfo.h>	64	#include <sysinfo/sysinfo.h>
-		65	#include <string.h>
65		66
66	/* NS16550 as a COM 1 */	67	/* NS16550 as a COM 1 */
67	#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)	68	#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
68		69
69	bootinfo_t *bootinfo;	70	bootinfo_t *bootinfo;
70		71
71	static uint64_t iosapic_base = 0xfec00000;	72	static uint64_t iosapic_base = 0xfec00000;
72		73
73	/** Performs ia64-specific initialization before main_bsp() is called. */	74	/** Performs ia64-specific initialization before main_bsp() is called. */
74	void arch_pre_main(void)	75	void arch_pre_main(void)
75	{	76	{
76	/* Setup usermode init tasks. */	77	/* Setup usermode init tasks. */
77		78
78	unsigned int i;	79	unsigned int i;
79		80
80	init.cnt = bootinfo->taskmap.count;	81	init.cnt = bootinfo->taskmap.count;
81		82
82	for (i = 0; i < init.cnt; i++) {	83	for (i = 0; i < init.cnt; i++) {
83	init.tasks[i].addr =	84	init.tasks[i].addr =
84	((unsigned long) bootinfo->taskmap.tasks[i].addr) \|	85	((unsigned long) bootinfo->taskmap.tasks[i].addr) \|
85	VRN_MASK;	86	VRN_MASK;
86	init.tasks[i].size = bootinfo->taskmap.tasks[i].size;	87	init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
-		88	strncpy(init.tasks[i].name, bootinfo->taskmap.tasks[i].name,
-		89	CONFIG_TASK_NAME_BUFLEN);
87	}	90	}
88	}	91	}
89		92
90	void arch_pre_mm_init(void)	93	void arch_pre_mm_init(void)
91	{	94	{
92	/*	95	/*
93	* Set Interruption Vector Address (i.e. location of interruption vector	96	* Set Interruption Vector Address (i.e. location of interruption vector
94	* table).	97	* table).
95	*/	98	*/
96	iva_write((uintptr_t) &ivt);	99	iva_write((uintptr_t) &ivt);
97	srlz_d();	100	srlz_d();
98		101
99	}	102	}
100		103
101	static void iosapic_init(void)	104	static void iosapic_init(void)
102	{	105	{
103	uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) \| FW_OFFSET;	106	uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) \| FW_OFFSET;
104	int i;	107	int i;
105		108
106	int myid, myeid;	109	int myid, myeid;
107		110
108	myid = ia64_get_cpu_id();	111	myid = ia64_get_cpu_id();
109	myeid = ia64_get_cpu_eid();	112	myeid = ia64_get_cpu_eid();
110		113
111	for (i = 0; i < 16; i++) {	114	for (i = 0; i < 16; i++) {
112	if (i == 2)	115	if (i == 2)
113	continue; /* Disable Cascade interrupt */	116	continue; /* Disable Cascade interrupt */
114	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i;	117	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i;
115	srlz_d();	118	srlz_d();
116	((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;	119	((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
117	srlz_d();	120	srlz_d();
118	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i + 1;	121	((uint32_t )(IOSAPIC + 0x00))[0] = 0x10 + 2 i + 1;
119	srlz_d();	122	srlz_d();
120	((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) \|	123	((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) \|
121	myeid << (48 - 32);	124	myeid << (48 - 32);
122	srlz_d();	125	srlz_d();
123	}	126	}
124		127
125	}	128	}
126		129
127		130
128	void arch_post_mm_init(void)	131	void arch_post_mm_init(void)
129	{	132	{
130	if (config.cpu_active == 1) {	133	if (config.cpu_active == 1) {
131	iosapic_init();	134	iosapic_init();
132	irq_init(INR_COUNT, INR_COUNT);	135	irq_init(INR_COUNT, INR_COUNT);
133	#ifdef SKI	136	#ifdef SKI
134	ski_init_console();	137	ski_init_console();
135	#else	138	#else
136	ega_init(EGA_BASE, EGA_VIDEORAM);	139	ega_init(EGA_BASE, EGA_VIDEORAM);
137	#endif	140	#endif
138	}	141	}
139	it_init();	142	it_init();
140		143
141	}	144	}
142		145
143	void arch_post_cpu_init(void)	146	void arch_post_cpu_init(void)
144	{	147	{
145	}	148	}
146		149
147	void arch_pre_smp_init(void)	150	void arch_pre_smp_init(void)
148	{	151	{
149	}	152	}
150		153
151	void arch_post_smp_init(void)	154	void arch_post_smp_init(void)
152	{	155	{
153	/*	156	/*
154	* Create thread that polls keyboard.	157	* Create thread that polls keyboard.
155	*/	158	*/
156	#ifdef SKI	159	#ifdef SKI
157	thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);	160	thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
158	if (!t)	161	if (!t)
159	panic("Cannot create kkbdpoll.");	162	panic("Cannot create kkbdpoll.");
160	thread_ready(t);	163	thread_ready(t);
161	#endif	164	#endif
162		165
163	#ifdef I460GX	166	#ifdef I460GX
164	devno_t devno = device_assign_devno();	167	devno_t devno = device_assign_devno();
165	inr_t inr;	168	inr_t inr;
166		169
167	#ifdef CONFIG_NS16550	170	#ifdef CONFIG_NS16550
168	inr = NS16550_IRQ;	171	inr = NS16550_IRQ;
169	(void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL);	172	(void) ns16550_init((ns16550_t *)NS16550_BASE, devno, inr, NULL, NULL);
170	sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);	173	sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
171	sysinfo_set_item_val("kbd.address.physical", NULL,	174	sysinfo_set_item_val("kbd.address.physical", NULL,
172	(uintptr_t) NS16550_BASE);	175	(uintptr_t) NS16550_BASE);
173	sysinfo_set_item_val("kbd.address.kernel", NULL,	176	sysinfo_set_item_val("kbd.address.kernel", NULL,
174	(uintptr_t) NS16550_BASE);	177	(uintptr_t) NS16550_BASE);
175	#else	178	#else
176	inr = IRQ_KBD;	179	inr = IRQ_KBD;
177	(void) i8042_init((i8042_t *)I8042_BASE, devno, inr);	180	(void) i8042_init((i8042_t *)I8042_BASE, devno, inr);
178	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);	181	sysinfo_set_item_val("kbd.type", NULL, KBD_LEGACY);
179	sysinfo_set_item_val("kbd.address.physical", NULL,	182	sysinfo_set_item_val("kbd.address.physical", NULL,
180	(uintptr_t) I8042_BASE);	183	(uintptr_t) I8042_BASE);
181	sysinfo_set_item_val("kbd.address.kernel", NULL,	184	sysinfo_set_item_val("kbd.address.kernel", NULL,
182	(uintptr_t) I8042_BASE);	185	(uintptr_t) I8042_BASE);
183	#endif	186	#endif
184	sysinfo_set_item_val("kbd", NULL, true);	187	sysinfo_set_item_val("kbd", NULL, true);
185	sysinfo_set_item_val("kbd.devno", NULL, devno);	188	sysinfo_set_item_val("kbd.devno", NULL, devno);
186	sysinfo_set_item_val("kbd.inr", NULL, inr);	189	sysinfo_set_item_val("kbd.inr", NULL, inr);
187	#endif	190	#endif
188		191
189	sysinfo_set_item_val("ia64_iospace", NULL, true);	192	sysinfo_set_item_val("ia64_iospace", NULL, true);
190	sysinfo_set_item_val("ia64_iospace.address", NULL, true);	193	sysinfo_set_item_val("ia64_iospace.address", NULL, true);
191	sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);	194	sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
192	}	195	}
193		196
194		197
195	/** Enter userspace and never return. */	198	/** Enter userspace and never return. */
196	void userspace(uspace_arg_t *kernel_uarg)	199	void userspace(uspace_arg_t *kernel_uarg)
197	{	200	{
198	psr_t psr;	201	psr_t psr;
199	rsc_t rsc;	202	rsc_t rsc;
200		203
201	psr.value = psr_read();	204	psr.value = psr_read();
202	psr.cpl = PL_USER;	205	psr.cpl = PL_USER;
203	psr.i = true; /* start with interrupts enabled */	206	psr.i = true; /* start with interrupts enabled */
204	psr.ic = true;	207	psr.ic = true;
205	psr.ri = 0; /* start with instruction #0 */	208	psr.ri = 0; /* start with instruction #0 */
206	psr.bn = 1; /* start in bank 0 */	209	psr.bn = 1; /* start in bank 0 */
207		210
208	asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));	211	asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
209	rsc.loadrs = 0;	212	rsc.loadrs = 0;
210	rsc.be = false;	213	rsc.be = false;
211	rsc.pl = PL_USER;	214	rsc.pl = PL_USER;
212	rsc.mode = 3; /* eager mode */	215	rsc.mode = 3; /* eager mode */
213		216
214	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,	217	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
215	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -	218	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
216	ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),	219	ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
217	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,	220	((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
218	(uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);	221	(uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
219		222
220	while (1)	223	while (1)
221	;	224	;
222	}	225	}
223		226
224	/** Set thread-local-storage pointer.	227	/** Set thread-local-storage pointer.
225	*	228	*
226	* We use r13 (a.k.a. tp) for this purpose.	229	* We use r13 (a.k.a. tp) for this purpose.
227	*/	230	*/
228	unative_t sys_tls_set(unative_t addr)	231	unative_t sys_tls_set(unative_t addr)
229	{	232	{
230	return 0;	233	return 0;
231	}	234	}
232		235
233	/** Acquire console back for kernel	236	/** Acquire console back for kernel
234	*	237	*
235	*/	238	*/
236	void arch_grab_console(void)	239	void arch_grab_console(void)
237	{	240	{
238	#ifdef SKI	241	#ifdef SKI
239	ski_kbd_grab();	242	ski_kbd_grab();
240	#endif	243	#endif
241	}	244	}
242		245
243	/** Return console to userspace	246	/** Return console to userspace
244	*	247	*
245	*/	248	*/
246	void arch_release_console(void)	249	void arch_release_console(void)
247	{	250	{
248	#ifdef SKI	251	#ifdef SKI
249	ski_kbd_release();	252	ski_kbd_release();
250	#endif	253	#endif
251	}	254	}
252		255
253	void arch_reboot(void)	256	void arch_reboot(void)
254	{	257	{
255	pio_write_8((ioport8_t *)0x64, 0xfe);	258	pio_write_8((ioport8_t *)0x64, 0xfe);
256	while (1)	259	while (1)
257	;	260	;
258	}	261	}
259		262
260	/** Construct function pointer	263	/** Construct function pointer
261	*	264	*
262	* @param fptr function pointer structure	265	* @param fptr function pointer structure
263	* @param addr function address	266	* @param addr function address
264	* @param caller calling function address	267	* @param caller calling function address
265	*	268	*
266	* @return address of the function pointer	269	* @return address of the function pointer
267	*	270	*
268	*/	271	*/
269	void arch_construct_function(fncptr_t fptr, void addr, void caller)	272	void arch_construct_function(fncptr_t fptr, void addr, void caller)
270	{	273	{
271	fptr->fnc = (unative_t) addr;	274	fptr->fnc = (unative_t) addr;
272	fptr->gp = ((unative_t *) caller)[1];	275	fptr->gp = ((unative_t *) caller)[1];
273		276
274	return (void *) fptr;	277	return (void *) fptr;
275	}	278	}
276		279
277	/** @}	280	/** @}
278	*/	281	*/
279		282

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