7 #define MPIC_GREG_BASE 0x01000
9 #define MPIC_GREG_FEATURE_0 0x00000
10 #define MPIC_GREG_FEATURE_LAST_SRC_MASK 0x07ff0000
11 #define MPIC_GREG_FEATURE_LAST_SRC_SHIFT 16
12 #define MPIC_GREG_FEATURE_LAST_CPU_MASK 0x00001f00
13 #define MPIC_GREG_FEATURE_LAST_CPU_SHIFT 8
14 #define MPIC_GREG_FEATURE_VERSION_MASK 0xff
15 #define MPIC_GREG_FEATURE_1 0x00010
16 #define MPIC_GREG_GLOBAL_CONF_0 0x00020
17 #define MPIC_GREG_GCONF_RESET 0x80000000
18 #define MPIC_GREG_GCONF_8259_PTHROU_DIS 0x20000000
19 #define MPIC_GREG_GCONF_BASE_MASK 0x000fffff
20 #define MPIC_GREG_GLOBAL_CONF_1 0x00030
21 #define MPIC_GREG_VENDOR_0 0x00040
22 #define MPIC_GREG_VENDOR_1 0x00050
23 #define MPIC_GREG_VENDOR_2 0x00060
24 #define MPIC_GREG_VENDOR_3 0x00070
25 #define MPIC_GREG_VENDOR_ID 0x00080
26 #define MPIC_GREG_VENDOR_ID_STEPPING_MASK 0x00ff0000
27 #define MPIC_GREG_VENDOR_ID_STEPPING_SHIFT 16
28 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_MASK 0x0000ff00
29 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_SHIFT 8
30 #define MPIC_GREG_VENDOR_ID_VENDOR_ID_MASK 0x000000ff
31 #define MPIC_GREG_PROCESSOR_INIT 0x00090
32 #define MPIC_GREG_IPI_VECTOR_PRI_0 0x000a0
33 #define MPIC_GREG_IPI_VECTOR_PRI_1 0x000b0
34 #define MPIC_GREG_IPI_VECTOR_PRI_2 0x000c0
35 #define MPIC_GREG_IPI_VECTOR_PRI_3 0x000d0
36 #define MPIC_GREG_SPURIOUS 0x000e0
37 #define MPIC_GREG_TIMER_FREQ 0x000f0
43 #define MPIC_TIMER_BASE 0x01100
44 #define MPIC_TIMER_STRIDE 0x40
46 #define MPIC_TIMER_CURRENT_CNT 0x00000
47 #define MPIC_TIMER_BASE_CNT 0x00010
48 #define MPIC_TIMER_VECTOR_PRI 0x00020
49 #define MPIC_TIMER_DESTINATION 0x00030
52 * Per-Processor registers
55 #define MPIC_CPU_THISBASE 0x00000
56 #define MPIC_CPU_BASE 0x20000
57 #define MPIC_CPU_STRIDE 0x01000
59 #define MPIC_CPU_IPI_DISPATCH_0 0x00040
60 #define MPIC_CPU_IPI_DISPATCH_1 0x00050
61 #define MPIC_CPU_IPI_DISPATCH_2 0x00060
62 #define MPIC_CPU_IPI_DISPATCH_3 0x00070
63 #define MPIC_CPU_CURRENT_TASK_PRI 0x00080
64 #define MPIC_CPU_TASKPRI_MASK 0x0000000f
65 #define MPIC_CPU_WHOAMI 0x00090
66 #define MPIC_CPU_WHOAMI_MASK 0x0000001f
67 #define MPIC_CPU_INTACK 0x000a0
68 #define MPIC_CPU_EOI 0x000b0
71 * Per-source registers
74 #define MPIC_IRQ_BASE 0x10000
75 #define MPIC_IRQ_STRIDE 0x00020
76 #define MPIC_IRQ_VECTOR_PRI 0x00000
77 #define MPIC_VECPRI_MASK 0x80000000
78 #define MPIC_VECPRI_ACTIVITY 0x40000000 /* Read Only */
79 #define MPIC_VECPRI_PRIORITY_MASK 0x000f0000
80 #define MPIC_VECPRI_PRIORITY_SHIFT 16
81 #define MPIC_VECPRI_VECTOR_MASK 0x000007ff
82 #define MPIC_VECPRI_POLARITY_POSITIVE 0x00800000
83 #define MPIC_VECPRI_POLARITY_NEGATIVE 0x00000000
84 #define MPIC_VECPRI_POLARITY_MASK 0x00800000
85 #define MPIC_VECPRI_SENSE_LEVEL 0x00400000
86 #define MPIC_VECPRI_SENSE_EDGE 0x00000000
87 #define MPIC_VECPRI_SENSE_MASK 0x00400000
88 #define MPIC_IRQ_DESTINATION 0x00010
90 #define MPIC_MAX_IRQ_SOURCES 2048
91 #define MPIC_MAX_CPUS 32
92 #define MPIC_MAX_ISU 32
95 * Special vector numbers (internal use only)
97 #define MPIC_VEC_SPURRIOUS 255
98 #define MPIC_VEC_IPI_3 254
99 #define MPIC_VEC_IPI_2 253
100 #define MPIC_VEC_IPI_1 252
101 #define MPIC_VEC_IPI_0 251
104 #define MPIC_VEC_TIMER_3 250
105 #define MPIC_VEC_TIMER_2 249
106 #define MPIC_VEC_TIMER_1 248
107 #define MPIC_VEC_TIMER_0 247
109 /* Type definition of the cascade handler */
110 typedef int (*mpic_cascade_t)(struct pt_regs *regs, void *data);
112 #ifdef CONFIG_MPIC_BROKEN_U3
113 /* Fixup table entry */
114 struct mpic_irq_fixup
119 #endif /* CONFIG_MPIC_BROKEN_U3 */
122 /* The instance data of a given MPIC */
125 /* The "linux" controller struct */
126 hw_irq_controller hc_irq;
128 hw_irq_controller hc_ipi;
133 /* How many irq sources in a given ISU */
134 unsigned int isu_size;
135 unsigned int isu_shift;
136 unsigned int isu_mask;
137 /* Offset of irq vector numbers */
138 unsigned int irq_offset;
139 unsigned int irq_count;
140 /* Offset of ipi vector numbers */
141 unsigned int ipi_offset;
142 /* Number of sources */
143 unsigned int num_sources;
145 unsigned int num_cpus;
146 /* cascade handler */
147 mpic_cascade_t cascade;
149 unsigned int cascade_vec;
151 unsigned char *senses;
152 unsigned int senses_count;
154 #ifdef CONFIG_MPIC_BROKEN_U3
155 /* The fixup table */
156 struct mpic_irq_fixup *fixups;
157 spinlock_t fixup_lock;
160 /* The various ioremap'ed bases */
161 volatile u32 __iomem *gregs;
162 volatile u32 __iomem *tmregs;
163 volatile u32 __iomem *cpuregs[MPIC_MAX_CPUS];
164 volatile u32 __iomem *isus[MPIC_MAX_ISU];
170 /* This is the primary controller, only that one has IPIs and
171 * has afinity control. A non-primary MPIC always uses CPU0
174 #define MPIC_PRIMARY 0x00000001
175 /* Set this for a big-endian MPIC */
176 #define MPIC_BIG_ENDIAN 0x00000002
178 #define MPIC_BROKEN_U3 0x00000004
179 /* Broken IPI registers (autodetected) */
180 #define MPIC_BROKEN_IPI 0x00000008
181 /* MPIC wants a reset */
182 #define MPIC_WANTS_RESET 0x00000010
184 /* Allocate the controller structure and setup the linux irq descs
185 * for the range if interrupts passed in. No HW initialization is
186 * actually performed.
188 * @phys_addr: physial base address of the MPIC
189 * @flags: flags, see constants above
190 * @isu_size: number of interrupts in an ISU. Use 0 to use a
191 * standard ISU-less setup (aka powermac)
192 * @irq_offset: first irq number to assign to this mpic
193 * @irq_count: number of irqs to use with this mpic IRQ sources. Pass 0
194 * to match the number of sources
195 * @ipi_offset: first irq number to assign to this mpic IPI sources,
196 * used only on primary mpic
197 * @senses: array of sense values
198 * @senses_num: number of entries in the array
200 * Note about the sense array. If none is passed, all interrupts are
201 * setup to be level negative unless MPIC_BROKEN_U3 is set in which
202 * case they are edge positive (and the array is ignored anyway).
203 * The values in the array start at the first source of the MPIC,
204 * that is senses[0] correspond to linux irq "irq_offset".
206 extern struct mpic *mpic_alloc(unsigned long phys_addr,
208 unsigned int isu_size,
209 unsigned int irq_offset,
210 unsigned int irq_count,
211 unsigned int ipi_offset,
212 unsigned char *senses,
213 unsigned int senses_num,
216 /* Assign ISUs, to call before mpic_init()
218 * @mpic: controller structure as returned by mpic_alloc()
219 * @isu_num: ISU number
220 * @phys_addr: physical address of the ISU
222 extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
223 unsigned long phys_addr);
225 /* Initialize the controller. After this has been called, none of the above
226 * should be called again for this mpic
228 extern void mpic_init(struct mpic *mpic);
230 /* Setup a cascade. Currently, only one cascade is supported this
231 * way, though you can always do a normal request_irq() and add
232 * other cascades this way. You should call this _after_ having
235 * @irq_no: "linux" irq number of the cascade (that is offset'ed vector)
236 * @handler: cascade handler function
238 extern void mpic_setup_cascade(unsigned int irq_no, mpic_cascade_t hanlder,
242 * All of the following functions must only be used after the
243 * ISUs have been assigned and the controller fully initialized
248 /* Change/Read the priority of an interrupt. Default is 8 for irqs and
249 * 10 for IPIs. You can call this on both IPIs and IRQ numbers, but the
250 * IPI number is then the offset'ed (linux irq number mapped to the IPI)
252 extern void mpic_irq_set_priority(unsigned int irq, unsigned int pri);
253 extern unsigned int mpic_irq_get_priority(unsigned int irq);
255 /* Setup a non-boot CPU */
256 extern void mpic_setup_this_cpu(void);
258 /* Request IPIs on primary mpic */
259 extern void mpic_request_ipis(void);
261 /* Send an IPI (non offseted number 0..3) */
262 extern void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask);
264 /* Fetch interrupt from a given mpic */
265 extern int mpic_get_one_irq(struct mpic *mpic, struct pt_regs *regs);
266 /* This one gets to the primary mpic */
267 extern int mpic_get_irq(struct pt_regs *regs);
269 /* global mpic for pSeries */
270 extern struct mpic *pSeries_mpic;