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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 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 | #include <arch/types.h> |
29 | #include <arch/types.h> |
30 | #include <arch/smp/apic.h> |
30 | #include <arch/smp/apic.h> |
31 | #include <arch/smp/ap.h> |
31 | #include <arch/smp/ap.h> |
32 | #include <arch/smp/mp.h> |
32 | #include <arch/smp/mp.h> |
33 | #include <mm/page.h> |
33 | #include <mm/page.h> |
34 | #include <time/delay.h> |
34 | #include <time/delay.h> |
35 | #include <arch/interrupt.h> |
35 | #include <arch/interrupt.h> |
36 | #include <print.h> |
36 | #include <print.h> |
37 | #include <arch/asm.h> |
37 | #include <arch/asm.h> |
38 | #include <arch.h> |
38 | #include <arch.h> |
39 | 39 | ||
40 | #ifdef __SMP__ |
40 | #ifdef __SMP__ |
41 | 41 | ||
42 | /* |
42 | /* |
43 | * This is functional, far-from-general-enough interface to the APIC. |
43 | * This is functional, far-from-general-enough interface to the APIC. |
44 | * Advanced Programmable Interrupt Controller for MP systems. |
44 | * Advanced Programmable Interrupt Controller for MP systems. |
45 | * Tested on: |
45 | * Tested on: |
46 | * Bochs 2.0.2 with 2-8 CPUs |
46 | * Bochs 2.0.2 with 2-8 CPUs |
47 | * ASUS P/I-P65UP5 + ASUS C-P55T2D REV. 1.41 with 2x 200Mhz Pentium CPUs |
47 | * ASUS P/I-P65UP5 + ASUS C-P55T2D REV. 1.41 with 2x 200Mhz Pentium CPUs |
48 | */ |
48 | */ |
49 | 49 | ||
50 | /* |
50 | /* |
51 | * These variables either stay configured as initilalized, or are changed by |
51 | * These variables either stay configured as initilalized, or are changed by |
52 | * the MP configuration code. |
52 | * the MP configuration code. |
53 | * |
53 | * |
54 | * Pay special attention to the volatile keyword. Without it, gcc -O2 would |
54 | * Pay special attention to the volatile keyword. Without it, gcc -O2 would |
55 | * optimize the code too much and accesses to l_apic and io_apic, that must |
55 | * optimize the code too much and accesses to l_apic and io_apic, that must |
56 | * always be 32-bit, would use byte oriented instructions. |
56 | * always be 32-bit, would use byte oriented instructions. |
57 | */ |
57 | */ |
58 | volatile __u32 *l_apic = (__u32 *) 0xfee00000; |
58 | volatile __u32 *l_apic = (__u32 *) 0xfee00000; |
59 | volatile __u32 *io_apic = (__u32 *) 0xfec00000; |
59 | volatile __u32 *io_apic = (__u32 *) 0xfec00000; |
60 | 60 | ||
61 | __u32 apic_id_mask = 0; |
61 | __u32 apic_id_mask = 0; |
62 | 62 | ||
63 | int apic_poll_errors(void); |
63 | int apic_poll_errors(void); |
64 | 64 | ||
65 | void apic_init(void) |
65 | void apic_init(void) |
66 | { |
66 | { |
67 | __u32 tmp, id, i; |
67 | __u32 tmp, id, i; |
68 | 68 | ||
69 | trap_register(VECTOR_APIC_SPUR, apic_spurious); |
69 | trap_register(VECTOR_APIC_SPUR, apic_spurious); |
70 | 70 | ||
71 | enable_irqs_function = io_apic_enable_irqs; |
71 | enable_irqs_function = io_apic_enable_irqs; |
72 | disable_irqs_function = io_apic_disable_irqs; |
72 | disable_irqs_function = io_apic_disable_irqs; |
73 | eoi_function = l_apic_eoi; |
73 | eoi_function = l_apic_eoi; |
74 | 74 | ||
75 | /* |
75 | /* |
76 | * Configure interrupt routing. |
76 | * Configure interrupt routing. |
77 | * IRQ 0 remains masked as the time signal is generated by l_apic's themselves. |
77 | * IRQ 0 remains masked as the time signal is generated by l_apic's themselves. |
78 | * Other interrupts will be forwarded to the lowest priority CPU. |
78 | * Other interrupts will be forwarded to the lowest priority CPU. |
79 | */ |
79 | */ |
80 | io_apic_disable_irqs(0xffff); |
80 | io_apic_disable_irqs(0xffff); |
81 | trap_register(VECTOR_CLK, l_apic_timer_interrupt); |
81 | trap_register(VECTOR_CLK, l_apic_timer_interrupt); |
82 | for (i=1; i<16; i++) { |
82 | for (i=1; i<16; i++) { |
83 | int pin; |
83 | int pin; |
84 | 84 | ||
85 | if ((pin = mp_irq_to_pin(i)) != -1) |
85 | if ((pin = mp_irq_to_pin(i)) != -1) |
86 | io_apic_change_ioredtbl(pin,0xf,IVT_IRQBASE+i,LOPRI); |
86 | io_apic_change_ioredtbl(pin,0xf,IVT_IRQBASE+i,LOPRI); |
87 | } |
87 | } |
88 | 88 | ||
89 | 89 | ||
90 | /* |
90 | /* |
91 | * Ensure that io_apic has unique ID. |
91 | * Ensure that io_apic has unique ID. |
92 | */ |
92 | */ |
93 | tmp = io_apic_read(IOAPICID); |
93 | tmp = io_apic_read(IOAPICID); |
94 | id = (tmp >> 24) & 0xf; |
94 | id = (tmp >> 24) & 0xf; |
95 | if ((1<<id) & apic_id_mask) { |
95 | if ((1<<id) & apic_id_mask) { |
96 | int i; |
96 | int i; |
97 | 97 | ||
98 | for (i=0; i<15; i++) { |
98 | for (i=0; i<15; i++) { |
99 | if (!((1<<i) & apic_id_mask)) { |
99 | if (!((1<<i) & apic_id_mask)) { |
100 | io_apic_write(IOAPICID, (tmp & (~(0xf<<24))) | (i<<24)); |
100 | io_apic_write(IOAPICID, (tmp & (~(0xf<<24))) | (i<<24)); |
101 | break; |
101 | break; |
102 | } |
102 | } |
103 | } |
103 | } |
104 | } |
104 | } |
105 | 105 | ||
106 | 106 | ||
107 | 107 | ||
108 | /* |
108 | /* |
109 | * Configure the BSP's lapic. |
109 | * Configure the BSP's lapic. |
110 | */ |
110 | */ |
111 | l_apic_init(); |
111 | l_apic_init(); |
112 | l_apic_debug(); |
112 | l_apic_debug(); |
113 | } |
113 | } |
114 | 114 | ||
115 | void apic_spurious(__u8 n, __u32 stack[]) |
115 | void apic_spurious(__u8 n, __u32 stack[]) |
116 | { |
116 | { |
117 | printf("cpu%d: APIC spurious interrupt\n", CPU->id); |
117 | printf("cpu%d: APIC spurious interrupt\n", CPU->id); |
118 | } |
118 | } |
119 | 119 | ||
120 | int apic_poll_errors(void) |
120 | int apic_poll_errors(void) |
121 | { |
121 | { |
122 | __u32 esr; |
122 | __u32 esr; |
123 | 123 | ||
124 | esr = l_apic[ESR] & ~ESRClear; |
124 | esr = l_apic[ESR] & ~ESRClear; |
125 | 125 | ||
126 | if ((esr>>0) & 1) |
126 | if ((esr>>0) & 1) |
127 | printf("Send CS Error\n"); |
127 | printf("Send CS Error\n"); |
128 | if ((esr>>1) & 1) |
128 | if ((esr>>1) & 1) |
129 | printf("Receive CS Error\n"); |
129 | printf("Receive CS Error\n"); |
130 | if ((esr>>2) & 1) |
130 | if ((esr>>2) & 1) |
131 | printf("Send Accept Error\n"); |
131 | printf("Send Accept Error\n"); |
132 | if ((esr>>3) & 1) |
132 | if ((esr>>3) & 1) |
133 | printf("Receive Accept Error\n"); |
133 | printf("Receive Accept Error\n"); |
134 | if ((esr>>5) & 1) |
134 | if ((esr>>5) & 1) |
135 | printf("Send Illegal Vector\n"); |
135 | printf("Send Illegal Vector\n"); |
136 | if ((esr>>6) & 1) |
136 | if ((esr>>6) & 1) |
137 | printf("Received Illegal Vector\n"); |
137 | printf("Received Illegal Vector\n"); |
138 | if ((esr>>7) & 1) |
138 | if ((esr>>7) & 1) |
139 | printf("Illegal Register Address\n"); |
139 | printf("Illegal Register Address\n"); |
140 | 140 | ||
141 | return !esr; |
141 | return !esr; |
142 | } |
142 | } |
143 | 143 | ||
144 | /* |
144 | /* |
145 | * Send all CPUs excluding CPU IPI vector. |
145 | * Send all CPUs excluding CPU IPI vector. |
146 | */ |
146 | */ |
147 | int l_apic_broadcast_custom_ipi(__u8 vector) |
147 | int l_apic_broadcast_custom_ipi(__u8 vector) |
148 | { |
148 | { |
149 | __u32 lo; |
149 | __u32 lo; |
150 | 150 | ||
151 | /* |
151 | /* |
152 | * Read the ICR register in and zero all non-reserved fields. |
152 | * Read the ICR register in and zero all non-reserved fields. |
153 | */ |
153 | */ |
154 | lo = l_apic[ICRlo] & ICRloClear; |
154 | lo = l_apic[ICRlo] & ICRloClear; |
155 | 155 | ||
156 | lo |= DLVRMODE_FIXED | DESTMODE_LOGIC | LEVEL_ASSERT | SHORTHAND_EXCL | TRGRMODE_LEVEL | vector; |
156 | lo |= DLVRMODE_FIXED | DESTMODE_LOGIC | LEVEL_ASSERT | SHORTHAND_EXCL | TRGRMODE_LEVEL | vector; |
157 | 157 | ||
158 | l_apic[ICRlo] = lo; |
158 | l_apic[ICRlo] = lo; |
159 | 159 | ||
160 | lo = l_apic[ICRlo] & ICRloClear; |
160 | lo = l_apic[ICRlo] & ICRloClear; |
161 | if (lo & SEND_PENDING) |
161 | if (lo & SEND_PENDING) |
162 | printf("IPI is pending.\n"); |
162 | printf("IPI is pending.\n"); |
163 | 163 | ||
164 | return apic_poll_errors(); |
164 | return apic_poll_errors(); |
165 | } |
165 | } |
166 | 166 | ||
167 | /* |
167 | /* |
168 | * Universal Start-up Algorithm for bringing up the AP processors. |
168 | * Universal Start-up Algorithm for bringing up the AP processors. |
169 | */ |
169 | */ |
170 | int l_apic_send_init_ipi(__u8 apicid) |
170 | int l_apic_send_init_ipi(__u8 apicid) |
171 | { |
171 | { |
172 | __u32 lo, hi; |
172 | __u32 lo, hi; |
173 | int i; |
173 | int i; |
174 | 174 | ||
175 | /* |
175 | /* |
176 | * Read the ICR register in and zero all non-reserved fields. |
176 | * Read the ICR register in and zero all non-reserved fields. |
177 | */ |
177 | */ |
178 | lo = l_apic[ICRlo] & ICRloClear; |
178 | lo = l_apic[ICRlo] & ICRloClear; |
179 | hi = l_apic[ICRhi] & ICRhiClear; |
179 | hi = l_apic[ICRhi] & ICRhiClear; |
180 | 180 | ||
181 | lo |= DLVRMODE_INIT | DESTMODE_PHYS | LEVEL_ASSERT | SHORTHAND_DEST | TRGRMODE_LEVEL; |
181 | lo |= DLVRMODE_INIT | DESTMODE_PHYS | LEVEL_ASSERT | SHORTHAND_DEST | TRGRMODE_LEVEL; |
182 | hi |= apicid << 24; |
182 | hi |= apicid << 24; |
183 | 183 | ||
184 | l_apic[ICRhi] = hi; |
184 | l_apic[ICRhi] = hi; |
185 | l_apic[ICRlo] = lo; |
185 | l_apic[ICRlo] = lo; |
186 | 186 | ||
187 | /* |
187 | /* |
188 | * According to MP Specification, 20us should be enough to |
188 | * According to MP Specification, 20us should be enough to |
189 | * deliver the IPI. |
189 | * deliver the IPI. |
190 | */ |
190 | */ |
191 | delay(20); |
191 | delay(20); |
192 | 192 | ||
193 | if (!apic_poll_errors()) return 0; |
193 | if (!apic_poll_errors()) return 0; |
194 | 194 | ||
195 | lo = l_apic[ICRlo] & ICRloClear; |
195 | lo = l_apic[ICRlo] & ICRloClear; |
196 | if (lo & SEND_PENDING) |
196 | if (lo & SEND_PENDING) |
197 | printf("IPI is pending.\n"); |
197 | printf("IPI is pending.\n"); |
198 | 198 | ||
199 | l_apic[ICRlo] = lo | DLVRMODE_INIT | DESTMODE_PHYS | LEVEL_DEASSERT | SHORTHAND_DEST | TRGRMODE_LEVEL; |
199 | l_apic[ICRlo] = lo | DLVRMODE_INIT | DESTMODE_PHYS | LEVEL_DEASSERT | SHORTHAND_DEST | TRGRMODE_LEVEL; |
200 | 200 | ||
201 | /* |
201 | /* |
202 | * Wait 10ms as MP Specification specifies. |
202 | * Wait 10ms as MP Specification specifies. |
203 | */ |
203 | */ |
204 | delay(10000); |
204 | delay(10000); |
205 | 205 | ||
206 | /* |
206 | /* |
207 | * MP specification says this should not be done for 82489DX-based |
207 | * MP specification says this should not be done for 82489DX-based |
208 | * l_apic's. However, everything is ok as long as STARTUP IPI is ignored |
208 | * l_apic's. However, everything is ok as long as STARTUP IPI is ignored |
209 | * by 8249DX. |
209 | * by 8249DX. |
210 | */ |
210 | */ |
211 | for (i = 0; i < 2; i++) { |
211 | for (i = 0; i < 2; i++) { |
212 | lo = l_apic[ICRlo] & ICRloClear; |
212 | lo = l_apic[ICRlo] & ICRloClear; |
213 | lo |= ((__address) ap_boot) / 4096; /* calculate the reset vector */ |
213 | lo |= ((__address) ap_boot) / 4096; /* calculate the reset vector */ |
214 | l_apic[ICRlo] = lo | DLVRMODE_STUP | DESTMODE_PHYS | LEVEL_ASSERT | SHORTHAND_DEST | TRGRMODE_LEVEL; |
214 | l_apic[ICRlo] = lo | DLVRMODE_STUP | DESTMODE_PHYS | LEVEL_ASSERT | SHORTHAND_DEST | TRGRMODE_LEVEL; |
215 | delay(200); |
215 | delay(200); |
216 | } |
216 | } |
217 | 217 | ||
218 | return apic_poll_errors(); |
218 | return apic_poll_errors(); |
219 | } |
219 | } |
220 | 220 | ||
221 | void l_apic_init(void) |
221 | void l_apic_init(void) |
222 | { |
222 | { |
223 | __u32 tmp, t1, t2; |
223 | __u32 tmp, t1, t2; |
224 | int cpu_id = config.cpu_active - 1; |
224 | int cpu_id = config.cpu_active - 1; |
225 | 225 | ||
226 | 226 | ||
227 | /* |
227 | /* |
228 | * Here we set local APIC ID's so that they match operating system's CPU ID's |
228 | * Here we set local APIC ID's so that they match operating system's CPU ID's |
229 | * This operation is dangerous as it is model specific. |
229 | * This operation is dangerous as it is model specific. |
230 | * TODO: some care should be taken. |
230 | * TODO: some care should be taken. |
231 | * NOTE: CPU may not be used to define APIC ID |
231 | * NOTE: CPU may not be used to define APIC ID |
232 | */ |
232 | */ |
233 | if (l_apic_id() != cpu_id) { |
233 | if (l_apic_id() != cpu_id) { |
234 | l_apic[L_APIC_ID] &= L_APIC_IDClear; |
234 | l_apic[L_APIC_ID] &= L_APIC_IDClear; |
235 | l_apic[L_APIC_ID] |= (l_apic[L_APIC_ID]&L_APIC_IDClear)|((cpu_id)<<L_APIC_IDShift); |
235 | l_apic[L_APIC_ID] |= (l_apic[L_APIC_ID]&L_APIC_IDClear)|((cpu_id)<<L_APIC_IDShift); |
236 | } |
236 | } |
237 | 237 | ||
238 | l_apic[LVT_Err] |= (1<<16); |
238 | l_apic[LVT_Err] |= (1<<16); |
239 | l_apic[LVT_LINT0] |= (1<<16); |
239 | l_apic[LVT_LINT0] |= (1<<16); |
240 | l_apic[LVT_LINT1] |= (1<<16); |
240 | l_apic[LVT_LINT1] |= (1<<16); |
241 | 241 | ||
242 | tmp = l_apic[SVR] & SVRClear; |
242 | tmp = l_apic[SVR] & SVRClear; |
243 | l_apic[SVR] = tmp | (1<<8) | (VECTOR_APIC_SPUR); |
243 | l_apic[SVR] = tmp | (1<<8) | (VECTOR_APIC_SPUR); |
244 | 244 | ||
245 | l_apic[TPR] &= TPRClear; |
245 | l_apic[TPR] &= TPRClear; |
246 | 246 | ||
247 | if (CPU->arch.family >= 6) |
247 | if (CPU->arch.family >= 6) |
248 | enable_l_apic_in_msr(); |
248 | enable_l_apic_in_msr(); |
249 | 249 | ||
250 | tmp = l_apic[ICRlo] & ICRloClear; |
250 | tmp = l_apic[ICRlo] & ICRloClear; |
251 | l_apic[ICRlo] = tmp | DLVRMODE_INIT | DESTMODE_PHYS | LEVEL_DEASSERT | SHORTHAND_INCL | TRGRMODE_LEVEL; |
251 | l_apic[ICRlo] = tmp | DLVRMODE_INIT | DESTMODE_PHYS | LEVEL_DEASSERT | SHORTHAND_INCL | TRGRMODE_LEVEL; |
252 | 252 | ||
253 | /* |
253 | /* |
254 | * Program the timer for periodic mode and respective vector. |
254 | * Program the timer for periodic mode and respective vector. |
255 | */ |
255 | */ |
256 | 256 | ||
257 | l_apic[TDCR] &= TDCRClear; |
257 | l_apic[TDCR] &= TDCRClear; |
258 | l_apic[TDCR] |= 0xb; |
258 | l_apic[TDCR] |= 0xb; |
259 | tmp = l_apic[LVT_Tm] | (1<<17) | (VECTOR_CLK); |
259 | tmp = l_apic[LVT_Tm] | (1<<17) | (VECTOR_CLK); |
260 | l_apic[LVT_Tm] = tmp & ~(1<<16); |
260 | l_apic[LVT_Tm] = tmp & ~(1<<16); |
261 | 261 | ||
262 | t1 = l_apic[CCRT]; |
262 | t1 = l_apic[CCRT]; |
263 | l_apic[ICRT] = 0xffffffff; |
263 | l_apic[ICRT] = 0xffffffff; |
264 | 264 | ||
265 | while (l_apic[CCRT] == t1) |
265 | while (l_apic[CCRT] == t1) |
266 | ; |
266 | ; |
267 | 267 | ||
268 | t1 = l_apic[CCRT]; |
268 | t1 = l_apic[CCRT]; |
269 | delay(1000); |
269 | delay(1000); |
270 | t2 = l_apic[CCRT]; |
270 | t2 = l_apic[CCRT]; |
271 | 271 | ||
272 | l_apic[ICRT] = t1-t2; |
272 | l_apic[ICRT] = t1-t2; |
273 | } |
273 | } |
274 | 274 | ||
275 | void l_apic_eoi(void) |
275 | void l_apic_eoi(void) |
276 | { |
276 | { |
277 | l_apic[EOI] = 0; |
277 | l_apic[EOI] = 0; |
278 | } |
278 | } |
279 | 279 | ||
280 | void l_apic_debug(void) |
280 | void l_apic_debug(void) |
281 | { |
281 | { |
282 | #ifdef LAPIC_VERBOSE |
282 | #ifdef LAPIC_VERBOSE |
283 | int i, lint; |
283 | int i, lint; |
284 | 284 | ||
285 | printf("LVT on cpu%d, LAPIC ID: %d\n", CPU->id, l_apic_id()); |
285 | printf("LVT on cpu%d, LAPIC ID: %d\n", CPU->id, l_apic_id()); |
286 | 286 | ||
287 | printf("LVT_Tm: "); |
287 | printf("LVT_Tm: "); |
288 | if (l_apic[LVT_Tm] & (1<<17)) printf("periodic"); else printf("one-shot"); putchar(','); |
288 | if (l_apic[LVT_Tm] & (1<<17)) printf("periodic"); else printf("one-shot"); putchar(','); |
289 | if (l_apic[LVT_Tm] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
289 | if (l_apic[LVT_Tm] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
290 | if (l_apic[LVT_Tm] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
290 | if (l_apic[LVT_Tm] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
291 | printf("%B\n", l_apic[LVT_Tm] & 0xff); |
291 | printf("%B\n", l_apic[LVT_Tm] & 0xff); |
292 | 292 | ||
293 | for (i=0; i<2; i++) { |
293 | for (i=0; i<2; i++) { |
294 | lint = i ? LVT_LINT1 : LVT_LINT0; |
294 | lint = i ? LVT_LINT1 : LVT_LINT0; |
295 | printf("LVT_LINT%d: ", i); |
295 | printf("LVT_LINT%d: ", i); |
296 | if (l_apic[lint] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
296 | if (l_apic[lint] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
297 | if (l_apic[lint] & (1<<15)) printf("level"); else printf("edge"); putchar(','); |
297 | if (l_apic[lint] & (1<<15)) printf("level"); else printf("edge"); putchar(','); |
298 | printf("%d", l_apic[lint] & (1<<14)); putchar(','); |
298 | printf("%d", l_apic[lint] & (1<<14)); putchar(','); |
299 | printf("%d", l_apic[lint] & (1<<13)); putchar(','); |
299 | printf("%d", l_apic[lint] & (1<<13)); putchar(','); |
300 | if (l_apic[lint] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
300 | if (l_apic[lint] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
301 | 301 | ||
302 | switch ((l_apic[lint]>>8)&7) { |
302 | switch ((l_apic[lint]>>8)&7) { |
303 | case 0: printf("fixed"); break; |
303 | case 0: printf("fixed"); break; |
304 | case 4: printf("NMI"); break; |
304 | case 4: printf("NMI"); break; |
305 | case 7: printf("ExtINT"); break; |
305 | case 7: printf("ExtINT"); break; |
306 | } |
306 | } |
307 | putchar(','); |
307 | putchar(','); |
308 | printf("%B\n", l_apic[lint] & 0xff); |
308 | printf("%B\n", l_apic[lint] & 0xff); |
309 | } |
309 | } |
310 | 310 | ||
311 | printf("LVT_Err: "); |
311 | printf("LVT_Err: "); |
312 | if (l_apic[LVT_Err] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
312 | if (l_apic[LVT_Err] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
313 | if (l_apic[LVT_Err] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
313 | if (l_apic[LVT_Err] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
314 | printf("%B\n", l_apic[LVT_Err] & 0xff); |
314 | printf("%B\n", l_apic[LVT_Err] & 0xff); |
315 | 315 | ||
316 | /* |
316 | /* |
317 | * This register is supported only on P6 and higher. |
317 | * This register is supported only on P6 and higher. |
318 | */ |
318 | */ |
319 | if (CPU->arch.family > 5) { |
319 | if (CPU->arch.family > 5) { |
320 | printf("LVT_PCINT: "); |
320 | printf("LVT_PCINT: "); |
321 | if (l_apic[LVT_PCINT] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
321 | if (l_apic[LVT_PCINT] & (1<<16)) printf("masked"); else printf("not masked"); putchar(','); |
322 | if (l_apic[LVT_PCINT] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
322 | if (l_apic[LVT_PCINT] & (1<<12)) printf("send pending"); else printf("idle"); putchar(','); |
323 | switch ((l_apic[LVT_PCINT] >> 8)&7) { |
323 | switch ((l_apic[LVT_PCINT] >> 8)&7) { |
324 | case 0: printf("fixed"); break; |
324 | case 0: printf("fixed"); break; |
325 | case 4: printf("NMI"); break; |
325 | case 4: printf("NMI"); break; |
326 | case 7: printf("ExtINT"); break; |
326 | case 7: printf("ExtINT"); break; |
327 | } |
327 | } |
328 | putchar(','); |
328 | putchar(','); |
329 | printf("%B\n", l_apic[LVT_PCINT] & 0xff); |
329 | printf("%B\n", l_apic[LVT_PCINT] & 0xff); |
330 | } |
330 | } |
331 | #endif |
331 | #endif |
332 | } |
332 | } |
333 | 333 | ||
334 | void l_apic_timer_interrupt(__u8 n, __u32 stack[]) |
334 | void l_apic_timer_interrupt(__u8 n, __u32 stack[]) |
335 | { |
335 | { |
336 | l_apic_eoi(); |
336 | l_apic_eoi(); |
337 | clock(); |
337 | clock(); |
338 | } |
338 | } |
339 | 339 | ||
340 | __u8 l_apic_id(void) |
340 | inline __u8 l_apic_id(void) |
341 | { |
341 | { |
342 | return (l_apic[L_APIC_ID] >> L_APIC_IDShift)&L_APIC_IDMask; |
342 | return (l_apic[L_APIC_ID] >> L_APIC_IDShift)&L_APIC_IDMask; |
343 | } |
343 | } |
344 | 344 | ||
345 | __u32 io_apic_read(__u8 address) |
345 | __u32 io_apic_read(__u8 address) |
346 | { |
346 | { |
347 | __u32 tmp; |
347 | __u32 tmp; |
348 | 348 | ||
349 | tmp = io_apic[IOREGSEL] & ~0xf; |
349 | tmp = io_apic[IOREGSEL] & ~0xf; |
350 | io_apic[IOREGSEL] = tmp | address; |
350 | io_apic[IOREGSEL] = tmp | address; |
351 | return io_apic[IOWIN]; |
351 | return io_apic[IOWIN]; |
352 | } |
352 | } |
353 | 353 | ||
354 | void io_apic_write(__u8 address, __u32 x) |
354 | void io_apic_write(__u8 address, __u32 x) |
355 | { |
355 | { |
356 | __u32 tmp; |
356 | __u32 tmp; |
357 | 357 | ||
358 | tmp = io_apic[IOREGSEL] & ~0xf; |
358 | tmp = io_apic[IOREGSEL] & ~0xf; |
359 | io_apic[IOREGSEL] = tmp | address; |
359 | io_apic[IOREGSEL] = tmp | address; |
360 | io_apic[IOWIN] = x; |
360 | io_apic[IOWIN] = x; |
361 | } |
361 | } |
362 | 362 | ||
363 | void io_apic_change_ioredtbl(int signal, int dest, __u8 v, int flags) |
363 | void io_apic_change_ioredtbl(int signal, int dest, __u8 v, int flags) |
364 | { |
364 | { |
365 | __u32 reglo, reghi; |
365 | __u32 reglo, reghi; |
366 | int dlvr = 0; |
366 | int dlvr = 0; |
367 | 367 | ||
368 | if (flags & LOPRI) |
368 | if (flags & LOPRI) |
369 | dlvr = 1; |
369 | dlvr = 1; |
370 | 370 | ||
371 | reglo = io_apic_read(IOREDTBL + signal*2); |
371 | reglo = io_apic_read(IOREDTBL + signal*2); |
372 | reghi = io_apic_read(IOREDTBL + signal*2 + 1); |
372 | reghi = io_apic_read(IOREDTBL + signal*2 + 1); |
373 | 373 | ||
374 | reghi &= ~0x0f000000; |
374 | reghi &= ~0x0f000000; |
375 | reghi |= (dest<<24); |
375 | reghi |= (dest<<24); |
376 | 376 | ||
377 | reglo &= (~0x1ffff) | (1<<16); /* don't touch the mask */ |
377 | reglo &= (~0x1ffff) | (1<<16); /* don't touch the mask */ |
378 | reglo |= (0<<15) | (0<<13) | (0<<11) | (dlvr<<8) | v; |
378 | reglo |= (0<<15) | (0<<13) | (0<<11) | (dlvr<<8) | v; |
379 | 379 | ||
380 | io_apic_write(IOREDTBL + signal*2, reglo); |
380 | io_apic_write(IOREDTBL + signal*2, reglo); |
381 | io_apic_write(IOREDTBL + signal*2 + 1, reghi); |
381 | io_apic_write(IOREDTBL + signal*2 + 1, reghi); |
382 | } |
382 | } |
383 | 383 | ||
384 | void io_apic_disable_irqs(__u16 irqmask) |
384 | void io_apic_disable_irqs(__u16 irqmask) |
385 | { |
385 | { |
386 | int i,pin; |
386 | int i,pin; |
387 | __u32 reglo; |
387 | __u32 reglo; |
388 | 388 | ||
389 | for (i=0;i<16;i++) { |
389 | for (i=0;i<16;i++) { |
390 | if ((irqmask>>i) & 1) { |
390 | if ((irqmask>>i) & 1) { |
391 | /* |
391 | /* |
392 | * Mask the signal input in IO APIC if there is a |
392 | * Mask the signal input in IO APIC if there is a |
393 | * mapping for the respective IRQ number. |
393 | * mapping for the respective IRQ number. |
394 | */ |
394 | */ |
395 | pin = mp_irq_to_pin(i); |
395 | pin = mp_irq_to_pin(i); |
396 | if (pin != -1) { |
396 | if (pin != -1) { |
397 | reglo = io_apic_read(IOREDTBL + pin*2); |
397 | reglo = io_apic_read(IOREDTBL + pin*2); |
398 | reglo |= (1<<16); |
398 | reglo |= (1<<16); |
399 | io_apic_write(IOREDTBL + pin*2,reglo); |
399 | io_apic_write(IOREDTBL + pin*2,reglo); |
400 | } |
400 | } |
401 | 401 | ||
402 | } |
402 | } |
403 | } |
403 | } |
404 | } |
404 | } |
405 | 405 | ||
406 | void io_apic_enable_irqs(__u16 irqmask) |
406 | void io_apic_enable_irqs(__u16 irqmask) |
407 | { |
407 | { |
408 | int i,pin; |
408 | int i,pin; |
409 | __u32 reglo; |
409 | __u32 reglo; |
410 | 410 | ||
411 | for (i=0;i<16;i++) { |
411 | for (i=0;i<16;i++) { |
412 | if ((irqmask>>i) & 1) { |
412 | if ((irqmask>>i) & 1) { |
413 | /* |
413 | /* |
414 | * Unmask the signal input in IO APIC if there is a |
414 | * Unmask the signal input in IO APIC if there is a |
415 | * mapping for the respective IRQ number. |
415 | * mapping for the respective IRQ number. |
416 | */ |
416 | */ |
417 | pin = mp_irq_to_pin(i); |
417 | pin = mp_irq_to_pin(i); |
418 | if (pin != -1) { |
418 | if (pin != -1) { |
419 | reglo = io_apic_read(IOREDTBL + pin*2); |
419 | reglo = io_apic_read(IOREDTBL + pin*2); |
420 | reglo &= ~(1<<16); |
420 | reglo &= ~(1<<16); |
421 | io_apic_write(IOREDTBL + pin*2,reglo); |
421 | io_apic_write(IOREDTBL + pin*2,reglo); |
422 | } |
422 | } |
423 | 423 | ||
424 | } |
424 | } |
425 | } |
425 | } |
426 | 426 | ||
427 | } |
427 | } |
428 | 428 | ||
429 | #endif /* __SMP__ */ |
429 | #endif /* __SMP__ */ |
430 | 430 |