1 /*
2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
3 * reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the NetLogic
9 * license below:
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 *
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
20 * distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #ifndef _ASM_NLM_XLR_PIC_H
36 #define _ASM_NLM_XLR_PIC_H
37
38 #define PIC_CLK_HZ 66666666
39 #define pic_timer_freq() PIC_CLK_HZ
40
41 /* PIC hardware interrupt numbers */
42 #define PIC_IRT_WD_INDEX 0
43 #define PIC_IRT_TIMER_0_INDEX 1
44 #define PIC_IRT_TIMER_INDEX(i) ((i) + PIC_IRT_TIMER_0_INDEX)
45 #define PIC_IRT_TIMER_1_INDEX 2
46 #define PIC_IRT_TIMER_2_INDEX 3
47 #define PIC_IRT_TIMER_3_INDEX 4
48 #define PIC_IRT_TIMER_4_INDEX 5
49 #define PIC_IRT_TIMER_5_INDEX 6
50 #define PIC_IRT_TIMER_6_INDEX 7
51 #define PIC_IRT_TIMER_7_INDEX 8
52 #define PIC_IRT_CLOCK_INDEX PIC_IRT_TIMER_7_INDEX
53 #define PIC_IRT_UART_0_INDEX 9
54 #define PIC_IRT_UART_1_INDEX 10
55 #define PIC_IRT_I2C_0_INDEX 11
56 #define PIC_IRT_I2C_1_INDEX 12
57 #define PIC_IRT_PCMCIA_INDEX 13
58 #define PIC_IRT_GPIO_INDEX 14
59 #define PIC_IRT_HYPER_INDEX 15
60 #define PIC_IRT_PCIX_INDEX 16
61 /* XLS */
62 #define PIC_IRT_CDE_INDEX 15
63 #define PIC_IRT_BRIDGE_TB_XLS_INDEX 16
64 /* XLS */
65 #define PIC_IRT_GMAC0_INDEX 17
66 #define PIC_IRT_GMAC1_INDEX 18
67 #define PIC_IRT_GMAC2_INDEX 19
68 #define PIC_IRT_GMAC3_INDEX 20
69 #define PIC_IRT_XGS0_INDEX 21
70 #define PIC_IRT_XGS1_INDEX 22
71 #define PIC_IRT_HYPER_FATAL_INDEX 23
72 #define PIC_IRT_PCIX_FATAL_INDEX 24
73 #define PIC_IRT_BRIDGE_AERR_INDEX 25
74 #define PIC_IRT_BRIDGE_BERR_INDEX 26
75 #define PIC_IRT_BRIDGE_TB_XLR_INDEX 27
76 #define PIC_IRT_BRIDGE_AERR_NMI_INDEX 28
77 /* XLS */
78 #define PIC_IRT_GMAC4_INDEX 21
79 #define PIC_IRT_GMAC5_INDEX 22
80 #define PIC_IRT_GMAC6_INDEX 23
81 #define PIC_IRT_GMAC7_INDEX 24
82 #define PIC_IRT_BRIDGE_ERR_INDEX 25
83 #define PIC_IRT_PCIE_LINK0_INDEX 26
84 #define PIC_IRT_PCIE_LINK1_INDEX 27
85 #define PIC_IRT_PCIE_LINK2_INDEX 23
86 #define PIC_IRT_PCIE_LINK3_INDEX 24
87 #define PIC_IRT_PCIE_XLSB0_LINK2_INDEX 28
88 #define PIC_IRT_PCIE_XLSB0_LINK3_INDEX 29
89 #define PIC_IRT_SRIO_LINK0_INDEX 26
90 #define PIC_IRT_SRIO_LINK1_INDEX 27
91 #define PIC_IRT_SRIO_LINK2_INDEX 28
92 #define PIC_IRT_SRIO_LINK3_INDEX 29
93 #define PIC_IRT_PCIE_INT_INDEX 28
94 #define PIC_IRT_PCIE_FATAL_INDEX 29
95 #define PIC_IRT_GPIO_B_INDEX 30
96 #define PIC_IRT_USB_INDEX 31
97 /* XLS */
98 #define PIC_NUM_IRTS 32
99
100
101 #define PIC_CLOCK_TIMER 7
102
103 /* PIC Registers */
104 #define PIC_CTRL 0x00
105 #define PIC_CTRL_STE 8 /* timer enable start bit */
106 #define PIC_IPI 0x04
107 #define PIC_INT_ACK 0x06
108
109 #define WD_MAX_VAL_0 0x08
110 #define WD_MAX_VAL_1 0x09
111 #define WD_MASK_0 0x0a
112 #define WD_MASK_1 0x0b
113 #define WD_HEARBEAT_0 0x0c
114 #define WD_HEARBEAT_1 0x0d
115
116 #define PIC_IRT_0_BASE 0x40
117 #define PIC_IRT_1_BASE 0x80
118 #define PIC_TIMER_MAXVAL_0_BASE 0x100
119 #define PIC_TIMER_MAXVAL_1_BASE 0x110
120 #define PIC_TIMER_COUNT_0_BASE 0x120
121 #define PIC_TIMER_COUNT_1_BASE 0x130
122
123 #define PIC_IRT_0(picintr) (PIC_IRT_0_BASE + (picintr))
124 #define PIC_IRT_1(picintr) (PIC_IRT_1_BASE + (picintr))
125
126 #define PIC_TIMER_MAXVAL_0(i) (PIC_TIMER_MAXVAL_0_BASE + (i))
127 #define PIC_TIMER_MAXVAL_1(i) (PIC_TIMER_MAXVAL_1_BASE + (i))
128 #define PIC_TIMER_COUNT_0(i) (PIC_TIMER_COUNT_0_BASE + (i))
129 #define PIC_TIMER_COUNT_1(i) (PIC_TIMER_COUNT_0_BASE + (i))
130
131 /*
132 * Mapping between hardware interrupt numbers and IRQs on CPU
133 * we use a simple scheme to map PIC interrupts 0-31 to IRQs
134 * 8-39. This leaves the IRQ 0-7 for cpu interrupts like
135 * count/compare and FMN
136 */
137 #define PIC_IRQ_BASE 8
138 #define PIC_INTR_TO_IRQ(i) (PIC_IRQ_BASE + (i))
139 #define PIC_IRQ_TO_INTR(i) ((i) - PIC_IRQ_BASE)
140
141 #define PIC_IRT_FIRST_IRQ PIC_IRQ_BASE
142 #define PIC_WD_IRQ PIC_INTR_TO_IRQ(PIC_IRT_WD_INDEX)
143 #define PIC_TIMER_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_0_INDEX)
144 #define PIC_TIMER_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_1_INDEX)
145 #define PIC_TIMER_2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_2_INDEX)
146 #define PIC_TIMER_3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_3_INDEX)
147 #define PIC_TIMER_4_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_4_INDEX)
148 #define PIC_TIMER_5_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_5_INDEX)
149 #define PIC_TIMER_6_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_6_INDEX)
150 #define PIC_TIMER_7_IRQ PIC_INTR_TO_IRQ(PIC_IRT_TIMER_7_INDEX)
151 #define PIC_CLOCK_IRQ (PIC_TIMER_7_IRQ)
152 #define PIC_UART_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_UART_0_INDEX)
153 #define PIC_UART_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_UART_1_INDEX)
154 #define PIC_I2C_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_I2C_0_INDEX)
155 #define PIC_I2C_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_I2C_1_INDEX)
156 #define PIC_PCMCIA_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCMCIA_INDEX)
157 #define PIC_GPIO_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GPIO_INDEX)
158 #define PIC_HYPER_IRQ PIC_INTR_TO_IRQ(PIC_IRT_HYPER_INDEX)
159 #define PIC_PCIX_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIX_INDEX)
160 /* XLS */
161 #define PIC_CDE_IRQ PIC_INTR_TO_IRQ(PIC_IRT_CDE_INDEX)
162 #define PIC_BRIDGE_TB_XLS_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_TB_XLS_INDEX)
163 /* end XLS */
164 #define PIC_GMAC_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC0_INDEX)
165 #define PIC_GMAC_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC1_INDEX)
166 #define PIC_GMAC_2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC2_INDEX)
167 #define PIC_GMAC_3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC3_INDEX)
168 #define PIC_XGS_0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_XGS0_INDEX)
169 #define PIC_XGS_1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_XGS1_INDEX)
170 #define PIC_HYPER_FATAL_IRQ PIC_INTR_TO_IRQ(PIC_IRT_HYPER_FATAL_INDEX)
171 #define PIC_PCIX_FATAL_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIX_FATAL_INDEX)
172 #define PIC_BRIDGE_AERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_AERR_INDEX)
173 #define PIC_BRIDGE_BERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_BERR_INDEX)
174 #define PIC_BRIDGE_TB_XLR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_TB_XLR_INDEX)
175 #define PIC_BRIDGE_AERR_NMI_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_AERR_NMI_INDEX)
176 /* XLS defines */
177 #define PIC_GMAC_4_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC4_INDEX)
178 #define PIC_GMAC_5_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC5_INDEX)
179 #define PIC_GMAC_6_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC6_INDEX)
180 #define PIC_GMAC_7_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GMAC7_INDEX)
181 #define PIC_BRIDGE_ERR_IRQ PIC_INTR_TO_IRQ(PIC_IRT_BRIDGE_ERR_INDEX)
182 #define PIC_PCIE_LINK0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK0_INDEX)
183 #define PIC_PCIE_LINK1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK1_INDEX)
184 #define PIC_PCIE_LINK2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK2_INDEX)
185 #define PIC_PCIE_LINK3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_LINK3_INDEX)
186 #define PIC_PCIE_XLSB0_LINK2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_XLSB0_LINK2_INDEX)
187 #define PIC_PCIE_XLSB0_LINK3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_XLSB0_LINK3_INDEX)
188 #define PIC_SRIO_LINK0_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK0_INDEX)
189 #define PIC_SRIO_LINK1_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK1_INDEX)
190 #define PIC_SRIO_LINK2_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK2_INDEX)
191 #define PIC_SRIO_LINK3_IRQ PIC_INTR_TO_IRQ(PIC_IRT_SRIO_LINK3_INDEX)
192 #define PIC_PCIE_INT_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_INT__INDEX)
193 #define PIC_PCIE_FATAL_IRQ PIC_INTR_TO_IRQ(PIC_IRT_PCIE_FATAL_INDEX)
194 #define PIC_GPIO_B_IRQ PIC_INTR_TO_IRQ(PIC_IRT_GPIO_B_INDEX)
195 #define PIC_USB_IRQ PIC_INTR_TO_IRQ(PIC_IRT_USB_INDEX)
196 #define PIC_IRT_LAST_IRQ PIC_USB_IRQ
197 /* end XLS */
198
199 #ifndef __ASSEMBLY__
200
201 #define PIC_IRQ_IS_EDGE_TRIGGERED(irq) (((irq) >= PIC_TIMER_0_IRQ) && \
202 ((irq) <= PIC_TIMER_7_IRQ))
203 #define PIC_IRQ_IS_IRT(irq) (((irq) >= PIC_IRT_FIRST_IRQ) && \
204 ((irq) <= PIC_IRT_LAST_IRQ))
205
206 static inline int
nlm_irq_to_irt(int irq)207 nlm_irq_to_irt(int irq)
208 {
209 if (PIC_IRQ_IS_IRT(irq) == 0)
210 return -1;
211
212 return PIC_IRQ_TO_INTR(irq);
213 }
214
215 static inline int
nlm_irt_to_irq(int irt)216 nlm_irt_to_irq(int irt)
217 {
218
219 return PIC_INTR_TO_IRQ(irt);
220 }
221
222 static inline void
nlm_pic_enable_irt(uint64_t base,int irt)223 nlm_pic_enable_irt(uint64_t base, int irt)
224 {
225 uint32_t reg;
226
227 reg = nlm_read_reg(base, PIC_IRT_1(irt));
228 nlm_write_reg(base, PIC_IRT_1(irt), reg | (1u << 31));
229 }
230
231 static inline void
nlm_pic_disable_irt(uint64_t base,int irt)232 nlm_pic_disable_irt(uint64_t base, int irt)
233 {
234 uint32_t reg;
235
236 reg = nlm_read_reg(base, PIC_IRT_1(irt));
237 nlm_write_reg(base, PIC_IRT_1(irt), reg & ~(1u << 31));
238 }
239
240 static inline void
nlm_pic_send_ipi(uint64_t base,int hwt,int irq,int nmi)241 nlm_pic_send_ipi(uint64_t base, int hwt, int irq, int nmi)
242 {
243 unsigned int tid, pid;
244
245 tid = hwt & 0x3;
246 pid = (hwt >> 2) & 0x07;
247 nlm_write_reg(base, PIC_IPI,
248 (pid << 20) | (tid << 16) | (nmi << 8) | irq);
249 }
250
251 static inline void
nlm_pic_ack(uint64_t base,int irt)252 nlm_pic_ack(uint64_t base, int irt)
253 {
254 nlm_write_reg(base, PIC_INT_ACK, 1u << irt);
255 }
256
257 static inline void
nlm_pic_init_irt(uint64_t base,int irt,int irq,int hwt,int en)258 nlm_pic_init_irt(uint64_t base, int irt, int irq, int hwt, int en)
259 {
260 nlm_write_reg(base, PIC_IRT_0(irt), (1u << hwt));
261 /* local scheduling, invalid, level by default */
262 nlm_write_reg(base, PIC_IRT_1(irt),
263 (en << 30) | (1 << 6) | irq);
264 }
265
266 static inline uint64_t
nlm_pic_read_timer(uint64_t base,int timer)267 nlm_pic_read_timer(uint64_t base, int timer)
268 {
269 uint32_t up1, up2, low;
270
271 up1 = nlm_read_reg(base, PIC_TIMER_COUNT_1(timer));
272 low = nlm_read_reg(base, PIC_TIMER_COUNT_0(timer));
273 up2 = nlm_read_reg(base, PIC_TIMER_COUNT_1(timer));
274
275 if (up1 != up2) /* wrapped, get the new low */
276 low = nlm_read_reg(base, PIC_TIMER_COUNT_0(timer));
277 return ((uint64_t)up2 << 32) | low;
278
279 }
280
281 static inline uint32_t
nlm_pic_read_timer32(uint64_t base,int timer)282 nlm_pic_read_timer32(uint64_t base, int timer)
283 {
284 return nlm_read_reg(base, PIC_TIMER_COUNT_0(timer));
285 }
286
287 static inline void
nlm_pic_set_timer(uint64_t base,int timer,uint64_t value,int irq,int cpu)288 nlm_pic_set_timer(uint64_t base, int timer, uint64_t value, int irq, int cpu)
289 {
290 uint32_t up, low;
291 uint64_t pic_ctrl = nlm_read_reg(base, PIC_CTRL);
292 int en;
293
294 en = (irq > 0);
295 up = value >> 32;
296 low = value & 0xFFFFFFFF;
297 nlm_write_reg(base, PIC_TIMER_MAXVAL_0(timer), low);
298 nlm_write_reg(base, PIC_TIMER_MAXVAL_1(timer), up);
299 nlm_pic_init_irt(base, PIC_IRT_TIMER_INDEX(timer), irq, cpu, 0);
300
301 /* enable the timer */
302 pic_ctrl |= (1 << (PIC_CTRL_STE + timer));
303 nlm_write_reg(base, PIC_CTRL, pic_ctrl);
304 }
305 #endif
306 #endif /* _ASM_NLM_XLR_PIC_H */
307