Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB |
| 3 | * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB |
| 4 | */ |
| 5 | |
| 6 | #include <linux/kernel.h> |
| 7 | #include <linux/module.h> |
| 8 | #include <linux/errno.h> |
| 9 | #include <linux/mutex.h> |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 10 | #include <linux/of.h> |
| 11 | #include <linux/of_platform.h> |
| 12 | #include <linux/interrupt.h> |
| 13 | #include <linux/of_device.h> |
Konrad Eisele | 8401707 | 2009-08-31 22:08:13 +0000 | [diff] [blame] | 14 | |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 15 | #include <asm/oplib.h> |
| 16 | #include <asm/timer.h> |
| 17 | #include <asm/prom.h> |
| 18 | #include <asm/leon.h> |
| 19 | #include <asm/leon_amba.h> |
Konrad Eisele | 8401707 | 2009-08-31 22:08:13 +0000 | [diff] [blame] | 20 | #include <asm/traps.h> |
| 21 | #include <asm/cacheflush.h> |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 22 | #include <asm/smp.h> |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 23 | |
| 24 | #include "prom.h" |
| 25 | #include "irq.h" |
| 26 | |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 27 | struct leon3_irqctrl_regs_map *leon3_irqctrl_regs; /* interrupt controller base address */ |
| 28 | struct leon3_gptimer_regs_map *leon3_gptimer_regs; /* timer controller base address */ |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 29 | |
| 30 | int leondebug_irq_disable; |
| 31 | int leon_debug_irqout; |
| 32 | static int dummy_master_l10_counter; |
Daniel Hellstrom | 7279b82 | 2011-01-27 01:26:58 +0000 | [diff] [blame] | 33 | unsigned long amba_system_id; |
Daniel Hellstrom | d61a38b | 2011-04-19 23:41:21 +0000 | [diff] [blame] | 34 | static DEFINE_SPINLOCK(leon_irq_lock); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 35 | |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 36 | unsigned long leon3_gptimer_irq; /* interrupt controller irq number */ |
Daniel Hellstrom | 2791c1a | 2011-01-04 01:41:32 +0000 | [diff] [blame] | 37 | unsigned long leon3_gptimer_idx; /* Timer Index (0..6) within Timer Core */ |
Daniel Hellstrom | 2cf9530 | 2011-04-19 23:41:23 +0000 | [diff] [blame] | 38 | int leon3_ticker_irq; /* Timer ticker IRQ */ |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 39 | unsigned int sparc_leon_eirq; |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 40 | #define LEON_IMASK(cpu) (&leon3_irqctrl_regs->mask[cpu]) |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 41 | #define LEON_IACK (&leon3_irqctrl_regs->iclear) |
| 42 | #define LEON_DO_ACK_HW 1 |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 43 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 44 | /* Return the last ACKed IRQ by the Extended IRQ controller. It has already |
| 45 | * been (automatically) ACKed when the CPU takes the trap. |
| 46 | */ |
| 47 | static inline unsigned int leon_eirq_get(int cpu) |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 48 | { |
| 49 | return LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->intid[cpu]) & 0x1f; |
| 50 | } |
| 51 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 52 | /* Handle one or multiple IRQs from the extended interrupt controller */ |
| 53 | static void leon_handle_ext_irq(unsigned int irq, struct irq_desc *desc) |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 54 | { |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 55 | unsigned int eirq; |
| 56 | int cpu = hard_smp_processor_id(); |
| 57 | |
| 58 | eirq = leon_eirq_get(cpu); |
| 59 | if ((eirq & 0x10) && irq_map[eirq]->irq) /* bit4 tells if IRQ happened */ |
| 60 | generic_handle_irq(irq_map[eirq]->irq); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | /* The extended IRQ controller has been found, this function registers it */ |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 64 | void leon_eirq_setup(unsigned int eirq) |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 65 | { |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 66 | unsigned long mask, oldmask; |
| 67 | unsigned int veirq; |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 68 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 69 | if (eirq < 1 || eirq > 0xf) { |
| 70 | printk(KERN_ERR "LEON EXT IRQ NUMBER BAD: %d\n", eirq); |
| 71 | return; |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 72 | } |
| 73 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 74 | veirq = leon_build_device_irq(eirq, leon_handle_ext_irq, "extirq", 0); |
| 75 | |
| 76 | /* |
| 77 | * Unmask the Extended IRQ, the IRQs routed through the Ext-IRQ |
| 78 | * controller have a mask-bit of their own, so this is safe. |
| 79 | */ |
| 80 | irq_link(veirq); |
| 81 | mask = 1 << eirq; |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 82 | oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(0)); |
| 83 | LEON3_BYPASS_STORE_PA(LEON_IMASK(0), (oldmask | mask)); |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 84 | sparc_leon_eirq = eirq; |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | static inline unsigned long get_irqmask(unsigned int irq) |
| 88 | { |
| 89 | unsigned long mask; |
| 90 | |
| 91 | if (!irq || ((irq > 0xf) && !sparc_leon_eirq) |
| 92 | || ((irq > 0x1f) && sparc_leon_eirq)) { |
| 93 | printk(KERN_ERR |
| 94 | "leon_get_irqmask: false irq number: %d\n", irq); |
| 95 | mask = 0; |
| 96 | } else { |
| 97 | mask = LEON_HARD_INT(irq); |
| 98 | } |
| 99 | return mask; |
| 100 | } |
| 101 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 102 | static void leon_unmask_irq(struct irq_data *data) |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 103 | { |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 104 | unsigned long mask, oldmask, flags; |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 105 | |
| 106 | mask = (unsigned long)data->chip_data; |
Daniel Hellstrom | d61a38b | 2011-04-19 23:41:21 +0000 | [diff] [blame] | 107 | spin_lock_irqsave(&leon_irq_lock, flags); |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 108 | oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(0)); |
| 109 | LEON3_BYPASS_STORE_PA(LEON_IMASK(0), (oldmask | mask)); |
Daniel Hellstrom | d61a38b | 2011-04-19 23:41:21 +0000 | [diff] [blame] | 110 | spin_unlock_irqrestore(&leon_irq_lock, flags); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 111 | } |
| 112 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 113 | static void leon_mask_irq(struct irq_data *data) |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 114 | { |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 115 | unsigned long mask, oldmask, flags; |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 116 | |
| 117 | mask = (unsigned long)data->chip_data; |
Daniel Hellstrom | d61a38b | 2011-04-19 23:41:21 +0000 | [diff] [blame] | 118 | spin_lock_irqsave(&leon_irq_lock, flags); |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 119 | oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(0)); |
| 120 | LEON3_BYPASS_STORE_PA(LEON_IMASK(0), (oldmask & ~mask)); |
Daniel Hellstrom | d61a38b | 2011-04-19 23:41:21 +0000 | [diff] [blame] | 121 | spin_unlock_irqrestore(&leon_irq_lock, flags); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 122 | } |
| 123 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 124 | static unsigned int leon_startup_irq(struct irq_data *data) |
| 125 | { |
| 126 | irq_link(data->irq); |
| 127 | leon_unmask_irq(data); |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | static void leon_shutdown_irq(struct irq_data *data) |
| 132 | { |
| 133 | leon_mask_irq(data); |
| 134 | irq_unlink(data->irq); |
| 135 | } |
| 136 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 137 | /* Used by external level sensitive IRQ handlers on the LEON: ACK IRQ ctrl */ |
| 138 | static void leon_eoi_irq(struct irq_data *data) |
| 139 | { |
| 140 | unsigned long mask = (unsigned long)data->chip_data; |
| 141 | |
| 142 | if (mask & LEON_DO_ACK_HW) |
| 143 | LEON3_BYPASS_STORE_PA(LEON_IACK, mask & ~LEON_DO_ACK_HW); |
| 144 | } |
| 145 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 146 | static struct irq_chip leon_irq = { |
| 147 | .name = "leon", |
| 148 | .irq_startup = leon_startup_irq, |
| 149 | .irq_shutdown = leon_shutdown_irq, |
| 150 | .irq_mask = leon_mask_irq, |
| 151 | .irq_unmask = leon_unmask_irq, |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 152 | .irq_eoi = leon_eoi_irq, |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 153 | }; |
| 154 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 155 | /* |
| 156 | * Build a LEON IRQ for the edge triggered LEON IRQ controller: |
| 157 | * Edge (normal) IRQ - handle_simple_irq, ack=DONT-CARE, never ack |
| 158 | * Level IRQ (PCI|Level-GPIO) - handle_fasteoi_irq, ack=1, ack after ISR |
| 159 | * Per-CPU Edge - handle_percpu_irq, ack=0 |
| 160 | */ |
| 161 | unsigned int leon_build_device_irq(unsigned int real_irq, |
| 162 | irq_flow_handler_t flow_handler, |
| 163 | const char *name, int do_ack) |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 164 | { |
| 165 | unsigned int irq; |
| 166 | unsigned long mask; |
| 167 | |
| 168 | irq = 0; |
| 169 | mask = get_irqmask(real_irq); |
| 170 | if (mask == 0) |
| 171 | goto out; |
| 172 | |
| 173 | irq = irq_alloc(real_irq, real_irq); |
| 174 | if (irq == 0) |
| 175 | goto out; |
| 176 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 177 | if (do_ack) |
| 178 | mask |= LEON_DO_ACK_HW; |
| 179 | |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 180 | irq_set_chip_and_handler_name(irq, &leon_irq, |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 181 | flow_handler, name); |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 182 | irq_set_chip_data(irq, (void *)mask); |
| 183 | |
| 184 | out: |
| 185 | return irq; |
| 186 | } |
| 187 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 188 | static unsigned int _leon_build_device_irq(struct platform_device *op, |
| 189 | unsigned int real_irq) |
| 190 | { |
| 191 | return leon_build_device_irq(real_irq, handle_simple_irq, "edge", 0); |
| 192 | } |
| 193 | |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 194 | void __init leon_init_timers(irq_handler_t counter_fn) |
| 195 | { |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 196 | int irq, eirq; |
Daniel Hellstrom | 2791c1a | 2011-01-04 01:41:32 +0000 | [diff] [blame] | 197 | struct device_node *rootnp, *np, *nnp; |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 198 | struct property *pp; |
| 199 | int len; |
Daniel Hellstrom | e2305e3 | 2011-01-04 01:41:30 +0000 | [diff] [blame] | 200 | int cpu, icsel; |
Daniel Hellstrom | 2791c1a | 2011-01-04 01:41:32 +0000 | [diff] [blame] | 201 | int ampopts; |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 202 | int err; |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 203 | |
| 204 | leondebug_irq_disable = 0; |
| 205 | leon_debug_irqout = 0; |
| 206 | master_l10_counter = (unsigned int *)&dummy_master_l10_counter; |
| 207 | dummy_master_l10_counter = 0; |
| 208 | |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 209 | rootnp = of_find_node_by_path("/ambapp0"); |
| 210 | if (!rootnp) |
| 211 | goto bad; |
Daniel Hellstrom | 7279b82 | 2011-01-27 01:26:58 +0000 | [diff] [blame] | 212 | |
| 213 | /* Find System ID: GRLIB build ID and optional CHIP ID */ |
| 214 | pp = of_find_property(rootnp, "systemid", &len); |
| 215 | if (pp) |
| 216 | amba_system_id = *(unsigned long *)pp->value; |
| 217 | |
| 218 | /* Find IRQMP IRQ Controller Registers base adr otherwise bail out */ |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 219 | np = of_find_node_by_name(rootnp, "GAISLER_IRQMP"); |
Daniel Hellstrom | 9742e72 | 2011-01-04 01:41:31 +0000 | [diff] [blame] | 220 | if (!np) { |
| 221 | np = of_find_node_by_name(rootnp, "01_00d"); |
| 222 | if (!np) |
| 223 | goto bad; |
| 224 | } |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 225 | pp = of_find_property(np, "reg", &len); |
| 226 | if (!pp) |
| 227 | goto bad; |
| 228 | leon3_irqctrl_regs = *(struct leon3_irqctrl_regs_map **)pp->value; |
| 229 | |
| 230 | /* Find GPTIMER Timer Registers base address otherwise bail out. */ |
Daniel Hellstrom | 2791c1a | 2011-01-04 01:41:32 +0000 | [diff] [blame] | 231 | nnp = rootnp; |
| 232 | do { |
| 233 | np = of_find_node_by_name(nnp, "GAISLER_GPTIMER"); |
| 234 | if (!np) { |
| 235 | np = of_find_node_by_name(nnp, "01_011"); |
| 236 | if (!np) |
| 237 | goto bad; |
| 238 | } |
| 239 | |
| 240 | ampopts = 0; |
| 241 | pp = of_find_property(np, "ampopts", &len); |
| 242 | if (pp) { |
| 243 | ampopts = *(int *)pp->value; |
| 244 | if (ampopts == 0) { |
| 245 | /* Skip this instance, resource already |
| 246 | * allocated by other OS */ |
| 247 | nnp = np; |
| 248 | continue; |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | /* Select Timer-Instance on Timer Core. Default is zero */ |
| 253 | leon3_gptimer_idx = ampopts & 0x7; |
| 254 | |
| 255 | pp = of_find_property(np, "reg", &len); |
| 256 | if (pp) |
| 257 | leon3_gptimer_regs = *(struct leon3_gptimer_regs_map **) |
| 258 | pp->value; |
| 259 | pp = of_find_property(np, "interrupts", &len); |
| 260 | if (pp) |
| 261 | leon3_gptimer_irq = *(unsigned int *)pp->value; |
| 262 | } while (0); |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 263 | |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 264 | if (!(leon3_gptimer_regs && leon3_irqctrl_regs && leon3_gptimer_irq)) |
| 265 | goto bad; |
| 266 | |
| 267 | LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].val, 0); |
| 268 | LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].rld, |
| 269 | (((1000000 / HZ) - 1))); |
| 270 | LEON3_BYPASS_STORE_PA( |
Daniel Hellstrom | 2791c1a | 2011-01-04 01:41:32 +0000 | [diff] [blame] | 271 | &leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, 0); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 272 | |
Konrad Eisele | 8401707 | 2009-08-31 22:08:13 +0000 | [diff] [blame] | 273 | #ifdef CONFIG_SMP |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 274 | leon3_ticker_irq = leon3_gptimer_irq + 1 + leon3_gptimer_idx; |
Konrad Eisele | 8401707 | 2009-08-31 22:08:13 +0000 | [diff] [blame] | 275 | |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 276 | if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) & |
| 277 | (1<<LEON3_GPTIMER_SEPIRQ))) { |
| 278 | printk(KERN_ERR "timer not configured with separate irqs\n"); |
| 279 | BUG(); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 280 | } |
| 281 | |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 282 | LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].val, |
| 283 | 0); |
| 284 | LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].rld, |
| 285 | (((1000000/HZ) - 1))); |
| 286 | LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl, |
| 287 | 0); |
| 288 | #endif |
| 289 | |
| 290 | /* |
| 291 | * The IRQ controller may (if implemented) consist of multiple |
| 292 | * IRQ controllers, each mapped on a 4Kb boundary. |
| 293 | * Each CPU may be routed to different IRQCTRLs, however |
| 294 | * we assume that all CPUs (in SMP system) is routed to the |
| 295 | * same IRQ Controller, and for non-SMP only one IRQCTRL is |
| 296 | * accessed anyway. |
| 297 | * In AMP systems, Linux must run on CPU0 for the time being. |
| 298 | */ |
| 299 | cpu = sparc_leon3_cpuid(); |
| 300 | icsel = LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->icsel[cpu/8]); |
| 301 | icsel = (icsel >> ((7 - (cpu&0x7)) * 4)) & 0xf; |
| 302 | leon3_irqctrl_regs += icsel; |
| 303 | |
| 304 | /* Probe extended IRQ controller */ |
| 305 | eirq = (LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->mpstatus) |
| 306 | >> 16) & 0xf; |
| 307 | if (eirq != 0) |
| 308 | leon_eirq_setup(eirq); |
| 309 | |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 310 | irq = _leon_build_device_irq(NULL, leon3_gptimer_irq+leon3_gptimer_idx); |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 311 | err = request_irq(irq, counter_fn, IRQF_TIMER, "timer", NULL); |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 312 | if (err) { |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 313 | printk(KERN_ERR "unable to attach timer IRQ%d\n", irq); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 314 | prom_halt(); |
| 315 | } |
| 316 | |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 317 | LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, |
| 318 | LEON3_GPTIMER_EN | |
| 319 | LEON3_GPTIMER_RL | |
| 320 | LEON3_GPTIMER_LD | |
| 321 | LEON3_GPTIMER_IRQEN); |
Konrad Eisele | 8401707 | 2009-08-31 22:08:13 +0000 | [diff] [blame] | 322 | |
| 323 | #ifdef CONFIG_SMP |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 324 | /* Install per-cpu IRQ handler for broadcasted ticker */ |
| 325 | irq = leon_build_device_irq(leon3_ticker_irq, handle_percpu_irq, |
| 326 | "per-cpu", 0); |
| 327 | err = request_irq(irq, leon_percpu_timer_interrupt, |
| 328 | IRQF_PERCPU | IRQF_TIMER, "ticker", |
| 329 | NULL); |
| 330 | if (err) { |
| 331 | printk(KERN_ERR "unable to attach ticker IRQ%d\n", irq); |
| 332 | prom_halt(); |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 333 | } |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 334 | |
| 335 | LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl, |
| 336 | LEON3_GPTIMER_EN | |
| 337 | LEON3_GPTIMER_RL | |
| 338 | LEON3_GPTIMER_LD | |
| 339 | LEON3_GPTIMER_IRQEN); |
| 340 | #endif |
Daniel Hellstrom | 53aea7c | 2011-01-04 01:41:29 +0000 | [diff] [blame] | 341 | return; |
| 342 | bad: |
| 343 | printk(KERN_ERR "No Timer/irqctrl found\n"); |
| 344 | BUG(); |
| 345 | return; |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 346 | } |
| 347 | |
| 348 | void leon_clear_clock_irq(void) |
| 349 | { |
| 350 | } |
| 351 | |
| 352 | void leon_load_profile_irq(int cpu, unsigned int limit) |
| 353 | { |
| 354 | BUG(); |
| 355 | } |
| 356 | |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 357 | void __init leon_trans_init(struct device_node *dp) |
| 358 | { |
| 359 | if (strcmp(dp->type, "cpu") == 0 && strcmp(dp->name, "<NULL>") == 0) { |
| 360 | struct property *p; |
| 361 | p = of_find_property(dp, "mid", (void *)0); |
| 362 | if (p) { |
| 363 | int mid; |
| 364 | dp->name = prom_early_alloc(5 + 1); |
| 365 | memcpy(&mid, p->value, p->length); |
| 366 | sprintf((char *)dp->name, "cpu%.2d", mid); |
| 367 | } |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | void __initdata (*prom_amba_init)(struct device_node *dp, struct device_node ***nextp) = 0; |
| 372 | |
| 373 | void __init leon_node_init(struct device_node *dp, struct device_node ***nextp) |
| 374 | { |
| 375 | if (prom_amba_init && |
| 376 | strcmp(dp->type, "ambapp") == 0 && |
| 377 | strcmp(dp->name, "ambapp0") == 0) { |
| 378 | prom_amba_init(dp, nextp); |
| 379 | } |
| 380 | } |
| 381 | |
Konrad Eisele | 8401707 | 2009-08-31 22:08:13 +0000 | [diff] [blame] | 382 | #ifdef CONFIG_SMP |
| 383 | |
| 384 | void leon_set_cpu_int(int cpu, int level) |
| 385 | { |
| 386 | unsigned long mask; |
| 387 | mask = get_irqmask(level); |
| 388 | LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask); |
| 389 | } |
| 390 | |
| 391 | static void leon_clear_ipi(int cpu, int level) |
| 392 | { |
| 393 | unsigned long mask; |
| 394 | mask = get_irqmask(level); |
| 395 | LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask<<16); |
| 396 | } |
| 397 | |
| 398 | static void leon_set_udt(int cpu) |
| 399 | { |
| 400 | } |
| 401 | |
| 402 | void leon_clear_profile_irq(int cpu) |
| 403 | { |
| 404 | } |
| 405 | |
| 406 | void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu) |
| 407 | { |
| 408 | unsigned long mask, flags, *addr; |
| 409 | mask = get_irqmask(irq_nr); |
Daniel Hellstrom | d61a38b | 2011-04-19 23:41:21 +0000 | [diff] [blame] | 410 | spin_lock_irqsave(&leon_irq_lock, flags); |
Daniel Hellstrom | a481b5d | 2011-04-19 23:41:25 +0000 | [diff] [blame^] | 411 | addr = (unsigned long *)LEON_IMASK(cpu); |
| 412 | LEON3_BYPASS_STORE_PA(addr, (LEON3_BYPASS_LOAD_PA(addr) | mask)); |
Daniel Hellstrom | d61a38b | 2011-04-19 23:41:21 +0000 | [diff] [blame] | 413 | spin_unlock_irqrestore(&leon_irq_lock, flags); |
Konrad Eisele | 8401707 | 2009-08-31 22:08:13 +0000 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | #endif |
| 417 | |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 418 | void __init leon_init_IRQ(void) |
| 419 | { |
Sam Ravnborg | 6baa9b2 | 2011-04-18 11:25:44 +0000 | [diff] [blame] | 420 | sparc_irq_config.init_timers = leon_init_timers; |
Daniel Hellstrom | 4c6773c | 2011-04-19 23:41:22 +0000 | [diff] [blame] | 421 | sparc_irq_config.build_device_irq = _leon_build_device_irq; |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 422 | |
| 423 | BTFIXUPSET_CALL(clear_clock_irq, leon_clear_clock_irq, |
| 424 | BTFIXUPCALL_NORM); |
| 425 | BTFIXUPSET_CALL(load_profile_irq, leon_load_profile_irq, |
| 426 | BTFIXUPCALL_NOP); |
| 427 | |
| 428 | #ifdef CONFIG_SMP |
| 429 | BTFIXUPSET_CALL(set_cpu_int, leon_set_cpu_int, BTFIXUPCALL_NORM); |
| 430 | BTFIXUPSET_CALL(clear_cpu_int, leon_clear_ipi, BTFIXUPCALL_NORM); |
| 431 | BTFIXUPSET_CALL(set_irq_udt, leon_set_udt, BTFIXUPCALL_NORM); |
| 432 | #endif |
| 433 | |
| 434 | } |
| 435 | |
| 436 | void __init leon_init(void) |
| 437 | { |
Andres Salomon | ed41850 | 2010-10-10 21:51:25 -0600 | [diff] [blame] | 438 | of_pdt_build_more = &leon_node_init; |
Konrad Eisele | 5213a78 | 2009-08-17 00:13:29 +0000 | [diff] [blame] | 439 | } |