diff options
Diffstat (limited to 'arch/m68k/mac/macints.c')
| -rw-r--r-- | arch/m68k/mac/macints.c | 504 |
1 files changed, 127 insertions, 377 deletions
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c index 1809601ad90..694b14bb0de 100644 --- a/arch/m68k/mac/macints.c +++ b/arch/m68k/mac/macints.c @@ -137,14 +137,6 @@ #define DEBUG_SPURIOUS #define SHUTUP_SONIC -/* - * The mac_irq_list array is an array of linked lists of irq_node_t nodes. - * Each node contains one handler to be called whenever the interrupt - * occurs, with fast handlers listed before slow handlers. - */ - -irq_node_t *mac_irq_list[NUM_MAC_SOURCES]; - /* SCC interrupt mask */ static int scc_mask; @@ -209,34 +201,37 @@ extern int baboon_irq_pending(int); * SCC interrupt routines */ -static void scc_irq_enable(int); -static void scc_irq_disable(int); +static void scc_irq_enable(unsigned int); +static void scc_irq_disable(unsigned int); /* * console_loglevel determines NMI handler function */ -extern irqreturn_t mac_bang(int, void *, struct pt_regs *); irqreturn_t mac_nmi_handler(int, void *, struct pt_regs *); irqreturn_t mac_debug_handler(int, void *, struct pt_regs *); /* #define DEBUG_MACINTS */ +static void mac_enable_irq(unsigned int irq); +static void mac_disable_irq(unsigned int irq); + +static struct irq_controller mac_irq_controller = { + .name = "mac", + .lock = SPIN_LOCK_UNLOCKED, + .enable = mac_enable_irq, + .disable = mac_disable_irq, +}; + void mac_init_IRQ(void) { - int i; - #ifdef DEBUG_MACINTS printk("mac_init_IRQ(): Setting things up...\n"); #endif - /* Initialize the IRQ handler lists. Initially each list is empty, */ - - for (i = 0; i < NUM_MAC_SOURCES; i++) { - mac_irq_list[i] = NULL; - } - scc_mask = 0; + m68k_setup_irq_controller(&mac_irq_controller, IRQ_USER, + NUM_MAC_SOURCES - IRQ_USER); /* Make sure the SONIC interrupt is cleared or things get ugly */ #ifdef SHUTUP_SONIC printk("Killing onboard sonic... "); @@ -253,15 +248,16 @@ void mac_init_IRQ(void) * at levels 1-7. Most of the work is done elsewhere. */ - if (oss_present) { + if (oss_present) oss_register_interrupts(); - } else { + else via_register_interrupts(); - } - if (psc_present) psc_register_interrupts(); - if (baboon_present) baboon_register_interrupts(); + if (psc_present) + psc_register_interrupts(); + if (baboon_present) + baboon_register_interrupts(); iop_register_interrupts(); - cpu_request_irq(7, mac_nmi_handler, IRQ_FLG_LOCK, "NMI", + request_irq(IRQ_AUTO_7, mac_nmi_handler, 0, "NMI", mac_nmi_handler); #ifdef DEBUG_MACINTS printk("mac_init_IRQ(): Done!\n"); @@ -269,104 +265,6 @@ void mac_init_IRQ(void) } /* - * Routines to work with irq_node_t's on linked lists lifted from - * the Amiga code written by Roman Zippel. - */ - -static inline void mac_insert_irq(irq_node_t **list, irq_node_t *node) -{ - unsigned long flags; - irq_node_t *cur; - - if (!node->dev_id) - printk("%s: Warning: dev_id of %s is zero\n", - __FUNCTION__, node->devname); - - local_irq_save(flags); - - cur = *list; - - if (node->flags & IRQ_FLG_FAST) { - node->flags &= ~IRQ_FLG_SLOW; - while (cur && cur->flags & IRQ_FLG_FAST) { - list = &cur->next; - cur = cur->next; - } - } else if (node->flags & IRQ_FLG_SLOW) { - while (cur) { - list = &cur->next; - cur = cur->next; - } - } else { - while (cur && !(cur->flags & IRQ_FLG_SLOW)) { - list = &cur->next; - cur = cur->next; - } - } - - node->next = cur; - *list = node; - - local_irq_restore(flags); -} - -static inline void mac_delete_irq(irq_node_t **list, void *dev_id) -{ - unsigned long flags; - irq_node_t *node; - - local_irq_save(flags); - - for (node = *list; node; list = &node->next, node = *list) { - if (node->dev_id == dev_id) { - *list = node->next; - /* Mark it as free. */ - node->handler = NULL; - local_irq_restore(flags); - return; - } - } - local_irq_restore(flags); - printk ("%s: tried to remove invalid irq\n", __FUNCTION__); -} - -/* - * Call all the handlers for a given interrupt. Fast handlers are called - * first followed by slow handlers. - * - * This code taken from the original Amiga code written by Roman Zippel. - */ - -void mac_do_irq_list(int irq, struct pt_regs *fp) -{ - irq_node_t *node, *slow_nodes; - unsigned long flags; - - kstat_cpu(0).irqs[irq]++; - -#ifdef DEBUG_SPURIOUS - if (!mac_irq_list[irq] && (console_loglevel > 7)) { - printk("mac_do_irq_list: spurious interrupt %d!\n", irq); - return; - } -#endif - - /* serve first fast and normal handlers */ - for (node = mac_irq_list[irq]; - node && (!(node->flags & IRQ_FLG_SLOW)); - node = node->next) - node->handler(irq, node->dev_id, fp); - if (!node) return; - local_save_flags(flags); - local_irq_restore((flags & ~0x0700) | (fp->sr & 0x0700)); - /* if slow handlers exists, serve them now */ - slow_nodes = node; - for (; node; node = node->next) { - node->handler(irq, node->dev_id, fp); - } -} - -/* * mac_enable_irq - enable an interrupt source * mac_disable_irq - disable an interrupt source * mac_clear_irq - clears a pending interrupt @@ -375,276 +273,124 @@ void mac_do_irq_list(int irq, struct pt_regs *fp) * These routines are just dispatchers to the VIA/OSS/PSC routines. */ -void mac_enable_irq (unsigned int irq) +static void mac_enable_irq(unsigned int irq) { - int irq_src = IRQ_SRC(irq); + int irq_src = IRQ_SRC(irq); switch(irq_src) { - case 1: via_irq_enable(irq); - break; - case 2: - case 7: if (oss_present) { - oss_irq_enable(irq); - } else { - via_irq_enable(irq); - } - break; - case 3: - case 4: - case 5: - case 6: if (psc_present) { - psc_irq_enable(irq); - } else if (oss_present) { - oss_irq_enable(irq); - } else if (irq_src == 4) { - scc_irq_enable(irq); - } - break; - case 8: if (baboon_present) { - baboon_irq_enable(irq); - } - break; + case 1: + via_irq_enable(irq); + break; + case 2: + case 7: + if (oss_present) + oss_irq_enable(irq); + else + via_irq_enable(irq); + break; + case 3: + case 4: + case 5: + case 6: + if (psc_present) + psc_irq_enable(irq); + else if (oss_present) + oss_irq_enable(irq); + else if (irq_src == 4) + scc_irq_enable(irq); + break; + case 8: + if (baboon_present) + baboon_irq_enable(irq); + break; } } -void mac_disable_irq (unsigned int irq) +static void mac_disable_irq(unsigned int irq) { - int irq_src = IRQ_SRC(irq); + int irq_src = IRQ_SRC(irq); switch(irq_src) { - case 1: via_irq_disable(irq); - break; - case 2: - case 7: if (oss_present) { - oss_irq_disable(irq); - } else { - via_irq_disable(irq); - } - break; - case 3: - case 4: - case 5: - case 6: if (psc_present) { - psc_irq_disable(irq); - } else if (oss_present) { - oss_irq_disable(irq); - } else if (irq_src == 4) { - scc_irq_disable(irq); - } - break; - case 8: if (baboon_present) { - baboon_irq_disable(irq); - } - break; + case 1: + via_irq_disable(irq); + break; + case 2: + case 7: + if (oss_present) + oss_irq_disable(irq); + else + via_irq_disable(irq); + break; + case 3: + case 4: + case 5: + case 6: + if (psc_present) + psc_irq_disable(irq); + else if (oss_present) + oss_irq_disable(irq); + else if (irq_src == 4) + scc_irq_disable(irq); + break; + case 8: + if (baboon_present) + baboon_irq_disable(irq); + break; } } -void mac_clear_irq( unsigned int irq ) +void mac_clear_irq(unsigned int irq) { switch(IRQ_SRC(irq)) { - case 1: via_irq_clear(irq); - break; - case 2: - case 7: if (oss_present) { - oss_irq_clear(irq); - } else { - via_irq_clear(irq); - } - break; - case 3: - case 4: - case 5: - case 6: if (psc_present) { - psc_irq_clear(irq); - } else if (oss_present) { - oss_irq_clear(irq); - } - break; - case 8: if (baboon_present) { - baboon_irq_clear(irq); - } - break; + case 1: + via_irq_clear(irq); + break; + case 2: + case 7: + if (oss_present) + oss_irq_clear(irq); + else + via_irq_clear(irq); + break; + case 3: + case 4: + case 5: + case 6: + if (psc_present) + psc_irq_clear(irq); + else if (oss_present) + oss_irq_clear(irq); + break; + case 8: + if (baboon_present) + baboon_irq_clear(irq); + break; } } -int mac_irq_pending( unsigned int irq ) +int mac_irq_pending(unsigned int irq) { switch(IRQ_SRC(irq)) { - case 1: return via_irq_pending(irq); - case 2: - case 7: if (oss_present) { - return oss_irq_pending(irq); - } else { - return via_irq_pending(irq); - } - case 3: - case 4: - case 5: - case 6: if (psc_present) { - return psc_irq_pending(irq); - } else if (oss_present) { - return oss_irq_pending(irq); - } - } - return 0; -} - -/* - * Add an interrupt service routine to an interrupt source. - * Returns 0 on success. - * - * FIXME: You can register interrupts on nonexistent source (ie PSC4 on a - * non-PSC machine). We should return -EINVAL in those cases. - */ - -int mac_request_irq(unsigned int irq, - irqreturn_t (*handler)(int, void *, struct pt_regs *), - unsigned long flags, const char *devname, void *dev_id) -{ - irq_node_t *node; - -#ifdef DEBUG_MACINTS - printk ("%s: irq %d requested for %s\n", __FUNCTION__, irq, devname); -#endif - - if (irq < VIA1_SOURCE_BASE) { - return cpu_request_irq(irq, handler, flags, devname, dev_id); + case 1: + return via_irq_pending(irq); + case 2: + case 7: + if (oss_present) + return oss_irq_pending(irq); + else + return via_irq_pending(irq); + case 3: + case 4: + case 5: + case 6: + if (psc_present) + return psc_irq_pending(irq); + else if (oss_present) + return oss_irq_pending(irq); } - - if (irq >= NUM_MAC_SOURCES) { - printk ("%s: unknown irq %d requested by %s\n", - __FUNCTION__, irq, devname); - } - - /* Get a node and stick it onto the right list */ - - if (!(node = new_irq_node())) return -ENOMEM; - - node->handler = handler; - node->flags = flags; - node->dev_id = dev_id; - node->devname = devname; - node->next = NULL; - mac_insert_irq(&mac_irq_list[irq], node); - - /* Now enable the IRQ source */ - - mac_enable_irq(irq); - return 0; } -/* - * Removes an interrupt service routine from an interrupt source. - */ - -void mac_free_irq(unsigned int irq, void *dev_id) -{ -#ifdef DEBUG_MACINTS - printk ("%s: irq %d freed by %p\n", __FUNCTION__, irq, dev_id); -#endif - - if (irq < VIA1_SOURCE_BASE) { - cpu_free_irq(irq, dev_id); - return; - } - - if (irq >= NUM_MAC_SOURCES) { - printk ("%s: unknown irq %d freed\n", - __FUNCTION__, irq); - return; - } - - mac_delete_irq(&mac_irq_list[irq], dev_id); - - /* If the list for this interrupt is */ - /* empty then disable the source. */ - - if (!mac_irq_list[irq]) { - mac_disable_irq(irq); - } -} - -/* - * Generate a pretty listing for /proc/interrupts - * - * By the time we're called the autovector interrupt list has already been - * generated, so we just need to do the machspec interrupts. - * - * 990506 (jmt) - rewritten to handle chained machspec interrupt handlers. - * Also removed display of num_spurious it is already - * displayed for us as autovector irq 0. - */ - -int show_mac_interrupts(struct seq_file *p, void *v) -{ - int i; - irq_node_t *node; - char *base; - - /* Don't do Nubus interrupts in this loop; we do them separately */ - /* below so that we can print slot numbers instead of IRQ numbers */ - - for (i = VIA1_SOURCE_BASE ; i < NUM_MAC_SOURCES ; ++i) { - - /* Nonexistant interrupt or nothing registered; skip it. */ - - if ((node = mac_irq_list[i]) == NULL) continue; - if (node->flags & IRQ_FLG_STD) continue; - - base = ""; - switch(IRQ_SRC(i)) { - case 1: base = "via1"; - break; - case 2: if (oss_present) { - base = "oss"; - } else { - base = "via2"; - } - break; - case 3: - case 4: - case 5: - case 6: if (psc_present) { - base = "psc"; - } else if (oss_present) { - base = "oss"; - } else { - if (IRQ_SRC(i) == 4) base = "scc"; - } - break; - case 7: base = "nbus"; - break; - case 8: base = "bbn"; - break; - } - seq_printf(p, "%4s %2d: %10u ", base, i, kstat_cpu(0).irqs[i]); - - do { - if (node->flags & IRQ_FLG_FAST) { - seq_puts(p, "F "); - } else if (node->flags & IRQ_FLG_SLOW) { - seq_puts(p, "S "); - } else { - seq_puts(p, " "); - } - seq_printf(p, "%s\n", node->devname); - if ((node = node->next)) { - seq_puts(p, " "); - } - } while(node); - - } - return 0; -} - -void mac_default_handler(int irq, void *dev_id, struct pt_regs *regs) -{ -#ifdef DEBUG_SPURIOUS - printk("Unexpected IRQ %d on device %p\n", irq, dev_id); -#endif -} - static int num_debug[8]; irqreturn_t mac_debug_handler(int irq, void *dev_id, struct pt_regs *regs) @@ -684,7 +430,7 @@ irqreturn_t mac_nmi_handler(int irq, void *dev_id, struct pt_regs *fp) while (nmi_hold == 1) udelay(1000); - if ( console_loglevel >= 8 ) { + if (console_loglevel >= 8) { #if 0 show_state(); printk("PC: %08lx\nSR: %04x SP: %p\n", fp->pc, fp->sr, fp); @@ -713,14 +459,16 @@ irqreturn_t mac_nmi_handler(int irq, void *dev_id, struct pt_regs *fp) * done in hardware (only the PSC can do that.) */ -static void scc_irq_enable(int irq) { - int irq_idx = IRQ_IDX(irq); +static void scc_irq_enable(unsigned int irq) +{ + int irq_idx = IRQ_IDX(irq); scc_mask |= (1 << irq_idx); } -static void scc_irq_disable(int irq) { - int irq_idx = IRQ_IDX(irq); +static void scc_irq_disable(unsigned int irq) +{ + int irq_idx = IRQ_IDX(irq); scc_mask &= ~(1 << irq_idx); } @@ -755,6 +503,8 @@ void mac_scc_dispatch(int irq, void *dev_id, struct pt_regs *regs) /* and since they're autovector interrupts they */ /* pretty much kill the system. */ - if (reg & 0x38) mac_do_irq_list(IRQ_SCCA, regs); - if (reg & 0x07) mac_do_irq_list(IRQ_SCCB, regs); + if (reg & 0x38) + m68k_handle_int(IRQ_SCCA, regs); + if (reg & 0x07) + m68k_handle_int(IRQ_SCCB, regs); } |