source: mainline/kernel/arch/ia64/src/ia64.c@ 323a5aaf

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 323a5aaf was 323a5aaf, checked in by Jakub Vana <jakub.vana@…>, 17 years ago

Legacy IRQ support, uspace NS16550 support, some minor changes
  • Property mode set to 100644
File size: 6.8 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
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
15 * derived from this software without specific prior written permission.
16 *
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
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup ia64
30 * @{
31 */
32/** @file
33 */
34
35#include <arch.h>
36#include <arch/ski/ski.h>
37#include <arch/drivers/it.h>
38#include <arch/interrupt.h>
39#include <arch/barrier.h>
40#include <arch/asm.h>
41#include <arch/register.h>
42#include <arch/types.h>
43#include <arch/context.h>
44#include <arch/stack.h>
45#include <arch/mm/page.h>
46#include <mm/as.h>
47#include <config.h>
48#include <userspace.h>
49#include <console/console.h>
50#include <proc/uarg.h>
51#include <syscall/syscall.h>
52#include <ddi/irq.h>
53#include <ddi/device.h>
54#include <arch/drivers/ega.h>
55#include <arch/bootinfo.h>
56#include <genarch/kbd/i8042.h>
57#include <genarch/kbd/ns16550.h>
58#include <smp/smp.h>
59#include <smp/ipi.h>
60#include <arch/atomic.h>
61#include <panic.h>
62#include <print.h>
63#include <sysinfo/sysinfo.h>
64
65/*NS16550 as a COM 1*/
66#define NS16550_IRQ (4+LAGACY_INTERRUPT_BASE)
67#define NS16550_PORT 0x3f8
68
69bootinfo_t *bootinfo;
70
71static uint64_t iosapic_base=0xfec00000;
72
73void arch_pre_main(void)
74{
75 /* Setup usermode init tasks. */
76
77//#ifdef I460GX
78 unsigned int i;
79
80 init.cnt = bootinfo->taskmap.count;
81
82 for (i = 0; i < init.cnt; i++) {
83 init.tasks[i].addr = ((unsigned long) bootinfo->taskmap.tasks[i].addr) | VRN_MASK;
84 init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
85 }
86/*
87#else
88 init.cnt = 8;
89 init.tasks[0].addr = INIT0_ADDRESS;
90 init.tasks[0].size = INIT0_SIZE;
91 init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
92 init.tasks[1].size = INIT0_SIZE;
93 init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
94 init.tasks[2].size = INIT0_SIZE;
95 init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
96 init.tasks[3].size = INIT0_SIZE;
97 init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
98 init.tasks[4].size = INIT0_SIZE;
99 init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
100 init.tasks[5].size = INIT0_SIZE;
101 init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
102 init.tasks[6].size = INIT0_SIZE;
103 init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
104 init.tasks[7].size = INIT0_SIZE;
105#endif*/
106}
107
108void arch_pre_mm_init(void)
109{
110 /* Set Interruption Vector Address (i.e. location of interruption vector table). */
111 iva_write((uintptr_t) &ivt);
112 srlz_d();
113
114}
115
116static void iosapic_init(void)
117{
118
119 uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base))|FW_OFFSET;
120 int i;
121
122
123 for(i=0;i<16;i++)
124 {
125
126 if(i==2) continue; //Disable Cascade interrupt
127 ((uint32_t*)(IOSAPIC+0x00))[0]=0x10+2*i;
128 srlz_d();
129 ((uint32_t*)(IOSAPIC+0x10))[0]=LAGACY_INTERRUPT_BASE+i;
130 srlz_d();
131 ((uint32_t*)(IOSAPIC+0x00))[0]=0x10+2*i+1;
132 srlz_d();
133 ((uint32_t*)(IOSAPIC+0x10))[0]=1<<(56-32);
134 srlz_d();
135 }
136
137}
138
139
140void arch_post_mm_init(void)
141{
142 if(config.cpu_active==1)
143 {
144 iosapic_init();
145
146 irq_init(INR_COUNT, INR_COUNT);
147#ifdef SKI
148 ski_init_console();
149#else
150 ega_init();
151#endif
152 }
153 it_init();
154
155}
156
157void arch_post_cpu_init(void)
158{
159}
160
161void arch_pre_smp_init(void)
162{
163}
164
165
166#ifdef I460GX
167#define POLL_INTERVAL 50000 /* 50 ms */
168/** Kernel thread for polling keyboard. */
169static void i8042_kkbdpoll(void *arg)
170{
171 while (1) {
172 i8042_poll();
173#ifdef CONFIG_NS16550
174 #ifndef CONFIG_NS16550_INTERRUPT_DRIVEN
175 ns16550_poll();
176 #endif
177#endif
178 thread_usleep(POLL_INTERVAL);
179 }
180}
181#endif
182
183
184static void end_of_irq_void(void *cir_arg __attribute__((unused)),inr_t inr __attribute__((unused)))
185{
186 return;
187}
188
189
190void arch_post_smp_init(void)
191{
192
193 {
194 /*
195 * Create thread that polls keyboard.
196 */
197#ifdef SKI
198 thread_t *t;
199 t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
200 if (!t)
201 panic("cannot create kkbdpoll\n");
202 thread_ready(t);
203#endif
204
205#ifdef I460GX
206 devno_t kbd = device_assign_devno();
207 devno_t mouse = device_assign_devno();
208 /* keyboard controller */
209 i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
210
211#ifdef CONFIG_NS16550
212 ns16550_init(kbd, NS16550_IRQ, NS16550_PORT,end_of_irq_void,NULL); // as a COM 1
213#else
214#endif
215 thread_t *t;
216 t = thread_create(i8042_kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
217 if (!t)
218 panic("cannot create kkbdpoll\n");
219 thread_ready(t);
220
221#endif
222
223 }
224
225 sysinfo_set_item_val("ia64_iospace", NULL, true);
226 sysinfo_set_item_val("ia64_iospace.address", NULL, true);
227 sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
228
229
230
231
232
233}
234
235
236/** Enter userspace and never return. */
237void userspace(uspace_arg_t *kernel_uarg)
238{
239 psr_t psr;
240 rsc_t rsc;
241
242 psr.value = psr_read();
243 psr.cpl = PL_USER;
244 psr.i = true; /* start with interrupts enabled */
245 psr.ic = true;
246 psr.ri = 0; /* start with instruction #0 */
247 psr.bn = 1; /* start in bank 0 */
248
249 asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
250 rsc.loadrs = 0;
251 rsc.be = false;
252 rsc.pl = PL_USER;
253 rsc.mode = 3; /* eager mode */
254
255 switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
256 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
257 ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
258 (uintptr_t) kernel_uarg->uspace_uarg,
259 psr.value, rsc.value);
260
261 while (1) {
262 ;
263 }
264}
265
266/** Set thread-local-storage pointer.
267 *
268 * We use r13 (a.k.a. tp) for this purpose.
269 */
270unative_t sys_tls_set(unative_t addr)
271{
272 return 0;
273}
274
275/** Acquire console back for kernel
276 *
277 */
278void arch_grab_console(void)
279{
280#ifdef SKI
281 ski_kbd_grab();
282#else
283 i8042_grab();
284 #ifdef CONFIG_NS16550
285 ns16550_grab();
286 #endif
287
288#endif
289}
290/** Return console to userspace
291 *
292 */
293void arch_release_console(void)
294{
295#ifdef SKI
296 ski_kbd_release();
297 i8042_release();
298#else
299 #ifdef CONFIG_NS16550
300 ns16550_release();
301 #endif
302
303#endif
304}
305
306void arch_reboot(void)
307{
308 outb(0x64,0xfe);
309 while (1);
310}
311
312/** @}
313 */
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